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fields.py��0000644��00000020564�15027623470�0006401 0��ustar�00��from __future__ import absolute_import import email.utils import mimetypes import re import six def guess_content_type(filename, default="application/octet-stream"): """ Guess the "Content-Type" of a file. :param filename: The filename to guess the "Content-Type" of using :mod:`mimetypes`. :param default: If no "Content-Type" can be guessed, default to `default`. """ if filename: return mimetypes.guess_type(filename)[0] or default return default def format_header_param_rfc2231(name, value): """ Helper function to format and quote a single header parameter using the strategy defined in RFC 2231. Particularly useful for header parameters which might contain non-ASCII values, like file names. This follows `RFC 2388 Section 4.4 <https://tools.ietf.org/html/rfc2388#section-4.4>`_. :param name: The name of the parameter, a string expected to be ASCII only. :param value: The value of the parameter, provided as ``bytes`` or `str``. :ret: An RFC-2231-formatted unicode string. """ if isinstance(value, six.binary_type): value = value.decode("utf-8") if not any(ch in value for ch in '"\\\r\n'): result = u'%s="%s"' % (name, value) try: result.encode("ascii") except (UnicodeEncodeError, UnicodeDecodeError): pass else: return result if six.PY2: # Python 2: value = value.encode("utf-8") # encode_rfc2231 accepts an encoded string and returns an ascii-encoded # string in Python 2 but accepts and returns unicode strings in Python 3 value = email.utils.encode_rfc2231(value, "utf-8") value = "%s=%s" % (name, value) if six.PY2: # Python 2: value = value.decode("utf-8") return value _HTML5_REPLACEMENTS = { u"\u0022": u"%22", # Replace "\" with "\\". u"\u005C": u"\u005C\u005C", } # All control characters from 0x00 to 0x1F except* 0x1B. _HTML5_REPLACEMENTS.update( { six.unichr(cc): u"%{:02X}".format(cc) for cc in range(0x00, 0x1F + 1) if cc not in (0x1B,) } ) def _replace_multiple(value, needles_and_replacements): def replacer(match): return needles_and_replacements[match.group(0)] pattern = re.compile( r"\|".join([re.escape(needle) for needle in needles_and_replacements.keys()]) ) result = pattern.sub(replacer, value) return result def format_header_param_html5(name, value): """ Helper function to format and quote a single header parameter using the HTML5 strategy. Particularly useful for header parameters which might contain non-ASCII values, like file names. This follows the `HTML5 Working Draft Section 4.10.22.7`_ and matches the behavior of curl and modern browsers. .. _HTML5 Working Draft Section 4.10.22.7: https://w3c.github.io/html/sec-forms.html#multipart-form-data :param name: The name of the parameter, a string expected to be ASCII only. :param value: The value of the parameter, provided as ``bytes`` or `str``. :ret: A unicode string, stripped of troublesome characters. """ if isinstance(value, six.binary_type): value = value.decode("utf-8") value = _replace_multiple(value, _HTML5_REPLACEMENTS) return u'%s="%s"' % (name, value) # For backwards-compatibility. format_header_param = format_header_param_html5 class RequestField(object): """ A data container for request body parameters. :param name: The name of this request field. Must be unicode. :param data: The data/value body. :param filename: An optional filename of the request field. Must be unicode. :param headers: An optional dict-like object of headers to initially use for the field. :param header_formatter: An optional callable that is used to encode and format the headers. By default, this is :func:`format_header_param_html5`. """ def __init__( self, name, data, filename=None, headers=None, header_formatter=format_header_param_html5, ): self._name = name self._filename = filename self.data = data self.headers = {} if headers: self.headers = dict(headers) self.header_formatter = header_formatter @classmethod def from_tuples(cls, fieldname, value, header_formatter=format_header_param_html5): """ A :class:`~urllib3.fields.RequestField` factory from old-style tuple parameters. Supports constructing :class:`~urllib3.fields.RequestField` from parameter of key/value strings AND key/filetuple. A filetuple is a (filename, data, MIME type) tuple where the MIME type is optional. For example:: 'foo': 'bar', 'fakefile': ('foofile.txt', 'contents of foofile'), 'realfile': ('barfile.txt', open('realfile').read()), 'typedfile': ('bazfile.bin', open('bazfile').read(), 'image/jpeg'), 'nonamefile': 'contents of nonamefile field', Field names and filenames must be unicode. """ if isinstance(value, tuple): if len(value) == 3: filename, data, content_type = value else: filename, data = value content_type = guess_content_type(filename) else: filename = None content_type = None data = value request_param = cls( fieldname, data, filename=filename, header_formatter=header_formatter ) request_param.make_multipart(content_type=content_type) return request_param def _render_part(self, name, value): """ Overridable helper function to format a single header parameter. By default, this calls ``self.header_formatter``. :param name: The name of the parameter, a string expected to be ASCII only. :param value: The value of the parameter, provided as a unicode string. """ return self.header_formatter(name, value) def _render_parts(self, header_parts): """ Helper function to format and quote a single header. Useful for single headers that are composed of multiple items. E.g., 'Content-Disposition' fields. :param header_parts: A sequence of (k, v) tuples or a :class:`dict` of (k, v) to format as `k1="v1"; k2="v2"; ...`. """ parts = [] iterable = header_parts if isinstance(header_parts, dict): iterable = header_parts.items() for name, value in iterable: if value is not None: parts.append(self._render_part(name, value)) return u"; ".join(parts) def render_headers(self): """ Renders the headers for this request field. """ lines = [] sort_keys = ["Content-Disposition", "Content-Type", "Content-Location"] for sort_key in sort_keys: if self.headers.get(sort_key, False): lines.append(u"%s: %s" % (sort_key, self.headers[sort_key])) for header_name, header_value in self.headers.items(): if header_name not in sort_keys: if header_value: lines.append(u"%s: %s" % (header_name, header_value)) lines.append(u"\r\n") return u"\r\n".join(lines) def make_multipart( self, content_disposition=None, content_type=None, content_location=None ): """ Makes this request field into a multipart request field. This method overrides "Content-Disposition", "Content-Type" and "Content-Location" headers to the request parameter. :param content_type: The 'Content-Type' of the request body. :param content_location: The 'Content-Location' of the request body. """ self.headers["Content-Disposition"] = content_disposition or u"form-data" self.headers["Content-Disposition"] += u"; ".join( [ u"", self._render_parts( ((u"name", self._name), (u"filename", self._filename)) ), ] ) self.headers["Content-Type"] = content_type self.headers["Content-Location"] = content_location ��filepost.py��0000644��00000004557�15027623470�0006764 0��ustar�00��from __future__ import absolute_import import binascii import codecs import os from io import BytesIO from .fields import RequestField import six from six import b writer = codecs.lookup("utf-8")[3] def choose_boundary(): """ Our embarrassingly-simple replacement for mimetools.choose_boundary. """ boundary = binascii.hexlify(os.urandom(16)) if not six.PY2: boundary = boundary.decode("ascii") return boundary def iter_field_objects(fields): """ Iterate over fields. Supports list of (k, v) tuples and dicts, and lists of :class:`~urllib3.fields.RequestField`. """ if isinstance(fields, dict): i = six.iteritems(fields) else: i = iter(fields) for field in i: if isinstance(field, RequestField): yield field else: yield RequestField.from_tuples(field) def iter_fields(fields): """ .. deprecated:: 1.6 Iterate over fields. The addition of :class:`~urllib3.fields.RequestField` makes this function obsolete. Instead, use :func:`iter_field_objects`, which returns :class:`~urllib3.fields.RequestField` objects. Supports list of (k, v) tuples and dicts. """ if isinstance(fields, dict): return ((k, v) for k, v in six.iteritems(fields)) return ((k, v) for k, v in fields) def encode_multipart_formdata(fields, boundary=None): """ Encode a dictionary of ``fields`` using the multipart/form-data MIME format. :param fields: Dictionary of fields or list of (key, :class:`~urllib3.fields.RequestField`). :param boundary: If not specified, then a random boundary will be generated using :func:`urllib3.filepost.choose_boundary`. """ body = BytesIO() if boundary is None: boundary = choose_boundary() for field in iter_field_objects(fields): body.write(b("--%s\r\n" % (boundary))) writer(body).write(field.render_headers()) data = field.data if isinstance(data, int): data = str(data) # Backwards compatibility if isinstance(data, six.text_type): writer(body).write(data) else: body.write(data) body.write(b"\r\n") body.write(b("--%s--\r\n" % (boundary))) content_type = str("multipart/form-data; boundary=%s" % boundary) return body.getvalue(), content_type ��util/timeout.py��0000644��00000023423�15027623470�0007573 0��ustar�00��from __future__ import absolute_import import time # The default socket timeout, used by httplib to indicate that no timeout was # specified by the user from socket import _GLOBAL_DEFAULT_TIMEOUT from ..exceptions import TimeoutStateError # A sentinel value to indicate that no timeout was specified by the user in # urllib3 _Default = object() # Use time.monotonic if available. current_time = getattr(time, "monotonic", time.time) class Timeout(object): """Timeout configuration. Timeouts can be defined as a default for a pool: .. code-block:: python timeout = Timeout(connect=2.0, read=7.0) http = PoolManager(timeout=timeout) response = http.request('GET', 'http://example.com/') Or per-request (which overrides the default for the pool): .. code-block:: python response = http.request('GET', 'http://example.com/', timeout=Timeout(10)) Timeouts can be disabled by setting all the parameters to ``None``: .. code-block:: python no_timeout = Timeout(connect=None, read=None) response = http.request('GET', 'http://example.com/, timeout=no_timeout) :param total: This combines the connect and read timeouts into one; the read timeout will be set to the time leftover from the connect attempt. In the event that both a connect timeout and a total are specified, or a read timeout and a total are specified, the shorter timeout will be applied. Defaults to None. :type total: int, float, or None :param connect: The maximum amount of time (in seconds) to wait for a connection attempt to a server to succeed. Omitting the parameter will default the connect timeout to the system default, probably `the global default timeout in socket.py <http://hg.python.org/cpython/file/603b4d593758/Lib/socket.py#l535>`_. None will set an infinite timeout for connection attempts. :type connect: int, float, or None :param read: The maximum amount of time (in seconds) to wait between consecutive read operations for a response from the server. Omitting the parameter will default the read timeout to the system default, probably `the global default timeout in socket.py <http://hg.python.org/cpython/file/603b4d593758/Lib/socket.py#l535>`_. None will set an infinite timeout. :type read: int, float, or None .. note:: Many factors can affect the total amount of time for urllib3 to return an HTTP response. For example, Python's DNS resolver does not obey the timeout specified on the socket. Other factors that can affect total request time include high CPU load, high swap, the program running at a low priority level, or other behaviors. In addition, the read and total timeouts only measure the time between read operations on the socket connecting the client and the server, not the total amount of time for the request to return a complete response. For most requests, the timeout is raised because the server has not sent the first byte in the specified time. This is not always the case; if a server streams one byte every fifteen seconds, a timeout of 20 seconds will not trigger, even though the request will take several minutes to complete. If your goal is to cut off any request after a set amount of wall clock time, consider having a second "watcher" thread to cut off a slow request. """ #: A sentinel object representing the default timeout value DEFAULT_TIMEOUT = _GLOBAL_DEFAULT_TIMEOUT def __init__(self, total=None, connect=_Default, read=_Default): self._connect = self._validate_timeout(connect, "connect") self._read = self._validate_timeout(read, "read") self.total = self._validate_timeout(total, "total") self._start_connect = None def __repr__(self): return "%s(connect=%r, read=%r, total=%r)" % ( type(self).__name__, self._connect, self._read, self.total, ) # __str__ provided for backwards compatibility __str__ = __repr__ @classmethod def _validate_timeout(cls, value, name): """Check that a timeout attribute is valid. :param value: The timeout value to validate :param name: The name of the timeout attribute to validate. This is used to specify in error messages. :return: The validated and casted version of the given value. :raises ValueError: If it is a numeric value less than or equal to zero, or the type is not an integer, float, or None. """ if value is _Default: return cls.DEFAULT_TIMEOUT if value is None or value is cls.DEFAULT_TIMEOUT: return value if isinstance(value, bool): raise ValueError( "Timeout cannot be a boolean value. It must " "be an int, float or None." ) try: float(value) except (TypeError, ValueError): raise ValueError( "Timeout value %s was %s, but it must be an " "int, float or None." % (name, value) ) try: if value <= 0: raise ValueError( "Attempted to set %s timeout to %s, but the " "timeout cannot be set to a value less " "than or equal to 0." % (name, value) ) except TypeError: # Python 3 raise ValueError( "Timeout value %s was %s, but it must be an " "int, float or None." % (name, value) ) return value @classmethod def from_float(cls, timeout): """Create a new Timeout from a legacy timeout value. The timeout value used by httplib.py sets the same timeout on the connect(), and recv() socket requests. This creates a :class:`Timeout` object that sets the individual timeouts to the ``timeout`` value passed to this function. :param timeout: The legacy timeout value. :type timeout: integer, float, sentinel default object, or None :return: Timeout object :rtype: :class:`Timeout` """ return Timeout(read=timeout, connect=timeout) def clone(self): """Create a copy of the timeout object Timeout properties are stored per-pool but each request needs a fresh Timeout object to ensure each one has its own start/stop configured. :return: a copy of the timeout object :rtype: :class:`Timeout` """ # We can't use copy.deepcopy because that will also create a new object # for _GLOBAL_DEFAULT_TIMEOUT, which socket.py uses as a sentinel to # detect the user default. return Timeout(connect=self._connect, read=self._read, total=self.total) def start_connect(self): """Start the timeout clock, used during a connect() attempt :raises urllib3.exceptions.TimeoutStateError: if you attempt to start a timer that has been started already. """ if self._start_connect is not None: raise TimeoutStateError("Timeout timer has already been started.") self._start_connect = current_time() return self._start_connect def get_connect_duration(self): """Gets the time elapsed since the call to :meth:`start_connect`. :return: Elapsed time in seconds. :rtype: float :raises urllib3.exceptions.TimeoutStateError: if you attempt to get duration for a timer that hasn't been started. """ if self._start_connect is None: raise TimeoutStateError( "Can't get connect duration for timer that has not started." ) return current_time() - self._start_connect @property def connect_timeout(self): """Get the value to use when setting a connection timeout. This will be a positive float or integer, the value None (never timeout), or the default system timeout. :return: Connect timeout. :rtype: int, float, :attr:`Timeout.DEFAULT_TIMEOUT` or None """ if self.total is None: return self._connect if self._connect is None or self._connect is self.DEFAULT_TIMEOUT: return self.total return min(self._connect, self.total) @property def read_timeout(self): """Get the value for the read timeout. This assumes some time has elapsed in the connection timeout and computes the read timeout appropriately. If self.total is set, the read timeout is dependent on the amount of time taken by the connect timeout. If the connection time has not been established, a :exc:`~urllib3.exceptions.TimeoutStateError` will be raised. :return: Value to use for the read timeout. :rtype: int, float, :attr:`Timeout.DEFAULT_TIMEOUT` or None :raises urllib3.exceptions.TimeoutStateError: If :meth:`start_connect` has not yet been called on this object. """ if ( self.total is not None and self.total is not self.DEFAULT_TIMEOUT and self._read is not None and self._read is not self.DEFAULT_TIMEOUT ): # In case the connect timeout has not yet been established. if self._start_connect is None: return self._read return max(0, min(self.total - self.get_connect_duration(), self._read)) elif self.total is not None and self.total is not self.DEFAULT_TIMEOUT: return max(0, self.total - self.get_connect_duration()) else: return self._read ��util/proxy.py��0000644��00000003104�15027623470�0007260 0��ustar�00��from .ssl_ import create_urllib3_context, resolve_cert_reqs, resolve_ssl_version def connection_requires_http_tunnel( proxy_url=None, proxy_config=None, destination_scheme=None ): """ Returns True if the connection requires an HTTP CONNECT through the proxy. :param URL proxy_url: URL of the proxy. :param ProxyConfig proxy_config: Proxy configuration from poolmanager.py :param str destination_scheme: The scheme of the destination. (i.e https, http, etc) """ # If we're not using a proxy, no way to use a tunnel. if proxy_url is None: return False # HTTP destinations never require tunneling, we always forward. if destination_scheme == "http": return False # Support for forwarding with HTTPS proxies and HTTPS destinations. if ( proxy_url.scheme == "https" and proxy_config and proxy_config.use_forwarding_for_https ): return False # Otherwise always use a tunnel. return True def create_proxy_ssl_context( ssl_version, cert_reqs, ca_certs=None, ca_cert_dir=None, ca_cert_data=None ): """ Generates a default proxy ssl context if one hasn't been provided by the user. """ ssl_context = create_urllib3_context( ssl_version=resolve_ssl_version(ssl_version), cert_reqs=resolve_cert_reqs(cert_reqs), ) if ( not ca_certs and not ca_cert_dir and not ca_cert_data and hasattr(ssl_context, "load_default_certs") ): ssl_context.load_default_certs() return ssl_context ��util/ssltransport.py��0000644��00000015373�15027623470�0010670 0��ustar�00��import io import socket import ssl from urllib3.exceptions import ProxySchemeUnsupported from urllib3.packages import six SSL_BLOCKSIZE = 16384 class SSLTransport: """ The SSLTransport wraps an existing socket and establishes an SSL connection. Contrary to Python's implementation of SSLSocket, it allows you to chain multiple TLS connections together. It's particularly useful if you need to implement TLS within TLS. The class supports most of the socket API operations. """ @staticmethod def _validate_ssl_context_for_tls_in_tls(ssl_context): """ Raises a ProxySchemeUnsupported if the provided ssl_context can't be used for TLS in TLS. The only requirement is that the ssl_context provides the 'wrap_bio' methods. """ if not hasattr(ssl_context, "wrap_bio"): if six.PY2: raise ProxySchemeUnsupported( "TLS in TLS requires SSLContext.wrap_bio() which isn't " "supported on Python 2" ) else: raise ProxySchemeUnsupported( "TLS in TLS requires SSLContext.wrap_bio() which isn't " "available on non-native SSLContext" ) def __init__( self, socket, ssl_context, server_hostname=None, suppress_ragged_eofs=True ): """ Create an SSLTransport around socket using the provided ssl_context. """ self.incoming = ssl.MemoryBIO() self.outgoing = ssl.MemoryBIO() self.suppress_ragged_eofs = suppress_ragged_eofs self.socket = socket self.sslobj = ssl_context.wrap_bio( self.incoming, self.outgoing, server_hostname=server_hostname ) # Perform initial handshake. self._ssl_io_loop(self.sslobj.do_handshake) def __enter__(self): return self def __exit__(self, _): self.close() def fileno(self): return self.socket.fileno() def read(self, len=1024, buffer=None): return self._wrap_ssl_read(len, buffer) def recv(self, len=1024, flags=0): if flags != 0: raise ValueError("non-zero flags not allowed in calls to recv") return self._wrap_ssl_read(len) def recv_into(self, buffer, nbytes=None, flags=0): if flags != 0: raise ValueError("non-zero flags not allowed in calls to recv_into") if buffer and (nbytes is None): nbytes = len(buffer) elif nbytes is None: nbytes = 1024 return self.read(nbytes, buffer) def sendall(self, data, flags=0): if flags != 0: raise ValueError("non-zero flags not allowed in calls to sendall") count = 0 with memoryview(data) as view, view.cast("B") as byte_view: amount = len(byte_view) while count < amount: v = self.send(byte_view[count:]) count += v def send(self, data, flags=0): if flags != 0: raise ValueError("non-zero flags not allowed in calls to send") response = self._ssl_io_loop(self.sslobj.write, data) return response def makefile( self, mode="r", buffering=None, encoding=None, errors=None, newline=None ): """ Python's httpclient uses makefile and buffered io when reading HTTP messages and we need to support it. This is unfortunately a copy and paste of socket.py makefile with small changes to point to the socket directly. """ if not set(mode) <= {"r", "w", "b"}: raise ValueError("invalid mode %r (only r, w, b allowed)" % (mode,)) writing = "w" in mode reading = "r" in mode or not writing assert reading or writing binary = "b" in mode rawmode = "" if reading: rawmode += "r" if writing: rawmode += "w" raw = socket.SocketIO(self, rawmode) self.socket._io_refs += 1 if buffering is None: buffering = -1 if buffering < 0: buffering = io.DEFAULT_BUFFER_SIZE if buffering == 0: if not binary: raise ValueError("unbuffered streams must be binary") return raw if reading and writing: buffer = io.BufferedRWPair(raw, raw, buffering) elif reading: buffer = io.BufferedReader(raw, buffering) else: assert writing buffer = io.BufferedWriter(raw, buffering) if binary: return buffer text = io.TextIOWrapper(buffer, encoding, errors, newline) text.mode = mode return text def unwrap(self): self._ssl_io_loop(self.sslobj.unwrap) def close(self): self.socket.close() def getpeercert(self, binary_form=False): return self.sslobj.getpeercert(binary_form) def version(self): return self.sslobj.version() def cipher(self): return self.sslobj.cipher() def selected_alpn_protocol(self): return self.sslobj.selected_alpn_protocol() def selected_npn_protocol(self): return self.sslobj.selected_npn_protocol() def shared_ciphers(self): return self.sslobj.shared_ciphers() def compression(self): return self.sslobj.compression() def settimeout(self, value): self.socket.settimeout(value) def gettimeout(self): return self.socket.gettimeout() def _decref_socketios(self): self.socket._decref_socketios() def _wrap_ssl_read(self, len, buffer=None): try: return self._ssl_io_loop(self.sslobj.read, len, buffer) except ssl.SSLError as e: if e.errno == ssl.SSL_ERROR_EOF and self.suppress_ragged_eofs: return 0 # eof, return 0. else: raise def _ssl_io_loop(self, func, args): """Performs an I/O loop between incoming/outgoing and the socket.""" should_loop = True ret = None while should_loop: errno = None try: ret = func(args) except ssl.SSLError as e: if e.errno not in (ssl.SSL_ERROR_WANT_READ, ssl.SSL_ERROR_WANT_WRITE): # WANT_READ, and WANT_WRITE are expected, others are not. raise e errno = e.errno buf = self.outgoing.read() self.socket.sendall(buf) if errno is None: should_loop = False elif errno == ssl.SSL_ERROR_WANT_READ: buf = self.socket.recv(SSL_BLOCKSIZE) if buf: self.incoming.write(buf) else: self.incoming.write_eof() return ret ��util/wait.py��0000644��00000012434�15027623470�0007051 0��ustar�00��import errno import select import sys from functools import partial try: from time import monotonic except ImportError: from time import time as monotonic __all__ = ["NoWayToWaitForSocketError", "wait_for_read", "wait_for_write"] class NoWayToWaitForSocketError(Exception): pass # How should we wait on sockets? # # There are two types of APIs you can use for waiting on sockets: the fancy # modern stateful APIs like epoll/kqueue, and the older stateless APIs like # select/poll. The stateful APIs are more efficient when you have a lots of # sockets to keep track of, because you can set them up once and then use them # lots of times. But we only ever want to wait on a single socket at a time # and don't want to keep track of state, so the stateless APIs are actually # more efficient. So we want to use select() or poll(). # # Now, how do we choose between select() and poll()? On traditional Unixes, # select() has a strange calling convention that makes it slow, or fail # altogether, for high-numbered file descriptors. The point of poll() is to fix # that, so on Unixes, we prefer poll(). # # On Windows, there is no poll() (or at least Python doesn't provide a wrapper # for it), but that's OK, because on Windows, select() doesn't have this # strange calling convention; plain select() works fine. # # So: on Windows we use select(), and everywhere else we use poll(). We also # fall back to select() in case poll() is somehow broken or missing. if sys.version_info >= (3, 5): # Modern Python, that retries syscalls by default def _retry_on_intr(fn, timeout): return fn(timeout) else: # Old and broken Pythons. def _retry_on_intr(fn, timeout): if timeout is None: deadline = float("inf") else: deadline = monotonic() + timeout while True: try: return fn(timeout) # OSError for 3 <= pyver < 3.5, select.error for pyver <= 2.7 except (OSError, select.error) as e: # 'e.args[0]' incantation works for both OSError and select.error if e.args[0] != errno.EINTR: raise else: timeout = deadline - monotonic() if timeout < 0: timeout = 0 if timeout == float("inf"): timeout = None continue def select_wait_for_socket(sock, read=False, write=False, timeout=None): if not read and not write: raise RuntimeError("must specify at least one of read=True, write=True") rcheck = [] wcheck = [] if read: rcheck.append(sock) if write: wcheck.append(sock) # When doing a non-blocking connect, most systems signal success by # marking the socket writable. Windows, though, signals success by marked # it as "exceptional". We paper over the difference by checking the write # sockets for both conditions. (The stdlib selectors module does the same # thing.) fn = partial(select.select, rcheck, wcheck, wcheck) rready, wready, xready = _retry_on_intr(fn, timeout) return bool(rready or wready or xready) def poll_wait_for_socket(sock, read=False, write=False, timeout=None): if not read and not write: raise RuntimeError("must specify at least one of read=True, write=True") mask = 0 if read: mask \|= select.POLLIN if write: mask \|= select.POLLOUT poll_obj = select.poll() poll_obj.register(sock, mask) # For some reason, poll() takes timeout in milliseconds def do_poll(t): if t is not None: t = 1000 return poll_obj.poll(t) return bool(_retry_on_intr(do_poll, timeout)) def null_wait_for_socket(args, *kwargs): raise NoWayToWaitForSocketError("no select-equivalent available") def _have_working_poll(): # Apparently some systems have a select.poll that fails as soon as you try # to use it, either due to strange configuration or broken monkeypatching # from libraries like eventlet/greenlet. try: poll_obj = select.poll() _retry_on_intr(poll_obj.poll, 0) except (AttributeError, OSError): return False else: return True def wait_for_socket(args, *kwargs): # We delay choosing which implementation to use until the first time we're # called. We could do it at import time, but then we might make the wrong # decision if someone goes wild with monkeypatching select.poll after # we're imported. global wait_for_socket if _have_working_poll(): wait_for_socket = poll_wait_for_socket elif hasattr(select, "select"): wait_for_socket = select_wait_for_socket else: # Platform-specific: Appengine. wait_for_socket = null_wait_for_socket return wait_for_socket(args, *kwargs) def wait_for_read(sock, timeout=None): """Waits for reading to be available on a given socket. Returns True if the socket is readable, or False if the timeout expired. """ return wait_for_socket(sock, read=True, timeout=timeout) def wait_for_write(sock, timeout=None): """Waits for writing to be available on a given socket. Returns True if the socket is readable, or False if the timeout expired. 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Best-effort is performed to parse incomplete urls. Fields not provided will be None. This parser is RFC 3986 compliant. The parser logic and helper functions are based heavily on work done in the ``rfc3986`` module. :param str url: URL to parse into a :class:`.Url` namedtuple. Partly backwards-compatible with :mod:`urlparse`. Example:: >>> parse_url('http://google.com/mail/') Url(scheme='http', host='google.com', port=None, path='/mail/', ...) >>> parse_url('google.com:80') Url(scheme=None, host='google.com', port=80, path=None, ...) >>> parse_url('/foo?bar') Url(scheme=None, host=None, port=None, path='/foo', query='bar', ...) z//Nr"��r4��)NNNr��i��c��s��\|�d�u�r\|�S��\|��S�r8��r��)r��ensure_funcr��r��ensure_type��s��zparse_url.<locals>.ensure_typer��)r%�� SCHEME_REr��URI_RErM��r��r'��r}�� rpartition� _HOST_PORT_REri��USERINFO_CHARS�intr��r��rt��r��r��FRAGMENT_CHARS� ValueError�AttributeErrorrR��r��rz�� text_typerS��r\|��)r7�� source_urlr�� authorityr��r��r �� normalize_urir��_� host_portr ��r ��r��r��r��r�� parse_urlJ��sn�� r��c��C��s��t�\|��}\|jpd\|j\|jfS�)z4 Deprecated. Use :func:`parse_url` instead. r��)r��r��r0��r ��)r7��pr��r��r��get_host��s��r��)rJ��)4� __future__r��re�collectionsr�� exceptionsr��rR�� url_attrsr}��compilerT��r��UNICODE�DOTALLr��IPV4_PAT�HEX_PAT�format�LS32_PATr��_variations�UNRESERVED_PATrp��IPV6_PAT�ZONE_ID_PAT�IPV6_ADDRZ_PAT�REG_NAME_PATr��r��IPV6_REr~��BRACELESS_IPV6_ADDRZ_REr��_HOST_PORT_PATr��setr��SUB_DELIM_CHARSr��r��r��r��r%��rI��ri��rt��r��rx��r��r��r��r��r��r��r��<module>��sf�� ] #" a��util/queue.py��0000644��00000000727�15027623470�0007233 0��ustar�00��import collections import six from six.moves import queue if six.PY2: # Queue is imported for side effects on MS Windows. See issue #229. import Queue as _unused_module_Queue # noqa: F401 class LifoQueue(queue.Queue): def _init(self, _): self.queue = collections.deque() def _qsize(self, len=len): return len(self.queue) def _put(self, item): self.queue.append(item) def _get(self): return self.queue.pop() ��util/url.py��0000644��00000033276�15027623470�0006716 0��ustar�00��from __future__ import absolute_import import re from collections import namedtuple from ..exceptions import LocationParseError import six url_attrs = ["scheme", "auth", "host", "port", "path", "query", "fragment"] # We only want to normalize urls with an HTTP(S) scheme. # urllib3 infers URLs without a scheme (None) to be http. NORMALIZABLE_SCHEMES = ("http", "https", None) # Almost all of these patterns were derived from the # 'rfc3986' module: https://github.com/python-hyper/rfc3986 PERCENT_RE = re.compile(r"%[a-fA-F0-9]{2}") SCHEME_RE = re.compile(r"^(?:[a-zA-Z][a-zA-Z0-9+-]:\|/)") URI_RE = re.compile( r"^(?:([a-zA-Z][a-zA-Z0-9+.-]):)?" r"(?://([^\\/?#]))?" r"([^?#])" r"(?:\?([^#]))?" r"(?:#(.))?$", re.UNICODE \| re.DOTALL, ) IPV4_PAT = r"(?:[0-9]{1,3}\.){3}[0-9]{1,3}" HEX_PAT = "[0-9A-Fa-f]{1,4}" LS32_PAT = "(?:{hex}:{hex}\|{ipv4})".format(hex=HEX_PAT, ipv4=IPV4_PAT) _subs = {"hex": HEX_PAT, "ls32": LS32_PAT} _variations = [ # 6( h16 ":" ) ls32 "(?:%(hex)s:){6}%(ls32)s", # "::" 5( h16 ":" ) ls32 "::(?:%(hex)s:){5}%(ls32)s", # [ h16 ] "::" 4( h16 ":" ) ls32 "(?:%(hex)s)?::(?:%(hex)s:){4}%(ls32)s", # [ 1( h16 ":" ) h16 ] "::" 3( h16 ":" ) ls32 "(?:(?:%(hex)s:)?%(hex)s)?::(?:%(hex)s:){3}%(ls32)s", # [ 2( h16 ":" ) h16 ] "::" 2( h16 ":" ) ls32 "(?:(?:%(hex)s:){0,2}%(hex)s)?::(?:%(hex)s:){2}%(ls32)s", # [ 3( h16 ":" ) h16 ] "::" h16 ":" ls32 "(?:(?:%(hex)s:){0,3}%(hex)s)?::%(hex)s:%(ls32)s", # [ 4( h16 ":" ) h16 ] "::" ls32 "(?:(?:%(hex)s:){0,4}%(hex)s)?::%(ls32)s", # [ 5( h16 ":" ) h16 ] "::" h16 "(?:(?:%(hex)s:){0,5}%(hex)s)?::%(hex)s", # [ 6( h16 ":" ) h16 ] "::" "(?:(?:%(hex)s:){0,6}%(hex)s)?::", ] UNRESERVED_PAT = r"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789._!\-~" IPV6_PAT = "(?:" + "\|".join([x % _subs for x in _variations]) + ")" ZONE_ID_PAT = "(?:%25\|%)(?:[" + UNRESERVED_PAT + "]\|%[a-fA-F0-9]{2})+" IPV6_ADDRZ_PAT = r"\[" + IPV6_PAT + r"(?:" + ZONE_ID_PAT + r")?\]" REG_NAME_PAT = r"(?:[^\[\]%:/?#]\|%[a-fA-F0-9]{2})" TARGET_RE = re.compile(r"^(/[^?#])(?:\?([^#]))?(?:#.)?$") IPV4_RE = re.compile("^" + IPV4_PAT + "$") IPV6_RE = re.compile("^" + IPV6_PAT + "$") IPV6_ADDRZ_RE = re.compile("^" + IPV6_ADDRZ_PAT + "$") BRACELESS_IPV6_ADDRZ_RE = re.compile("^" + IPV6_ADDRZ_PAT[2:-2] + "$") ZONE_ID_RE = re.compile("(" + ZONE_ID_PAT + r")\]$") _HOST_PORT_PAT = ("^(%s\|%s\|%s)(?::([0-9]{0,5}))?$") % ( REG_NAME_PAT, IPV4_PAT, IPV6_ADDRZ_PAT, ) _HOST_PORT_RE = re.compile(_HOST_PORT_PAT, re.UNICODE \| re.DOTALL) UNRESERVED_CHARS = set( "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789._-~" ) SUB_DELIM_CHARS = set("!$&'()+,;=") USERINFO_CHARS = UNRESERVED_CHARS \| SUB_DELIM_CHARS \| {":"} PATH_CHARS = USERINFO_CHARS \| {"@", "/"} QUERY_CHARS = FRAGMENT_CHARS = PATH_CHARS \| {"?"} class Url(namedtuple("Url", url_attrs)): """ Data structure for representing an HTTP URL. Used as a return value for :func:`parse_url`. Both the scheme and host are normalized as they are both case-insensitive according to RFC 3986. """ __slots__ = () def __new__( cls, scheme=None, auth=None, host=None, port=None, path=None, query=None, fragment=None, ): if path and not path.startswith("/"): path = "/" + path if scheme is not None: scheme = scheme.lower() return super(Url, cls).__new__( cls, scheme, auth, host, port, path, query, fragment ) @property def hostname(self): """For backwards-compatibility with urlparse. We're nice like that.""" return self.host @property def request_uri(self): """Absolute path including the query string.""" uri = self.path or "/" if self.query is not None: uri += "?" + self.query return uri @property def netloc(self): """Network location including host and port""" if self.port: return "%s:%d" % (self.host, self.port) return self.host @property def url(self): """ Convert self into a url This function should more or less round-trip with :func:`.parse_url`. The returned url may not be exactly the same as the url inputted to :func:`.parse_url`, but it should be equivalent by the RFC (e.g., urls with a blank port will have : removed). Example: :: >>> U = parse_url('http://google.com/mail/') >>> U.url 'http://google.com/mail/' >>> Url('http', 'username:password', 'host.com', 80, ... '/path', 'query', 'fragment').url 'http://username:password@host.com:80/path?query#fragment' """ scheme, auth, host, port, path, query, fragment = self url = u"" # We use "is not None" we want things to happen with empty strings (or 0 port) if scheme is not None: url += scheme + u"://" if auth is not None: url += auth + u"@" if host is not None: url += host if port is not None: url += u":" + str(port) if path is not None: url += path if query is not None: url += u"?" + query if fragment is not None: url += u"#" + fragment return url def __str__(self): return self.url def split_first(s, delims): """ .. deprecated:: 1.25 Given a string and an iterable of delimiters, split on the first found delimiter. Return two split parts and the matched delimiter. If not found, then the first part is the full input string. Example:: >>> split_first('foo/bar?baz', '?/=') ('foo', 'bar?baz', '/') >>> split_first('foo/bar?baz', '123') ('foo/bar?baz', '', None) Scales linearly with number of delims. Not ideal for large number of delims. """ min_idx = None min_delim = None for d in delims: idx = s.find(d) if idx < 0: continue if min_idx is None or idx < min_idx: min_idx = idx min_delim = d if min_idx is None or min_idx < 0: return s, "", None return s[:min_idx], s[min_idx + 1 :], min_delim def _encode_invalid_chars(component, allowed_chars, encoding="utf-8"): """Percent-encodes a URI component without reapplying onto an already percent-encoded component. """ if component is None: return component component = six.ensure_text(component) # Normalize existing percent-encoded bytes. # Try to see if the component we're encoding is already percent-encoded # so we can skip all '%' characters but still encode all others. component, percent_encodings = PERCENT_RE.subn( lambda match: match.group(0).upper(), component ) uri_bytes = component.encode("utf-8", "surrogatepass") is_percent_encoded = percent_encodings == uri_bytes.count(b"%") encoded_component = bytearray() for i in range(0, len(uri_bytes)): # Will return a single character bytestring on both Python 2 & 3 byte = uri_bytes[i : i + 1] byte_ord = ord(byte) if (is_percent_encoded and byte == b"%") or ( byte_ord < 128 and byte.decode() in allowed_chars ): encoded_component += byte continue encoded_component.extend(b"%" + (hex(byte_ord)[2:].encode().zfill(2).upper())) return encoded_component.decode(encoding) def _remove_path_dot_segments(path): # See http://tools.ietf.org/html/rfc3986#section-5.2.4 for pseudo-code segments = path.split("/") # Turn the path into a list of segments output = [] # Initialize the variable to use to store output for segment in segments: # '.' is the current directory, so ignore it, it is superfluous if segment == ".": continue # Anything other than '..', should be appended to the output elif segment != "..": output.append(segment) # In this case segment == '..', if we can, we should pop the last # element elif output: output.pop() # If the path starts with '/' and the output is empty or the first string # is non-empty if path.startswith("/") and (not output or output[0]): output.insert(0, "") # If the path starts with '/.' or '/..' ensure we add one more empty # string to add a trailing '/' if path.endswith(("/.", "/..")): output.append("") return "/".join(output) def _normalize_host(host, scheme): if host: if isinstance(host, six.binary_type): host = six.ensure_str(host) if scheme in NORMALIZABLE_SCHEMES: is_ipv6 = IPV6_ADDRZ_RE.match(host) if is_ipv6: match = ZONE_ID_RE.search(host) if match: start, end = match.span(1) zone_id = host[start:end] if zone_id.startswith("%25") and zone_id != "%25": zone_id = zone_id[3:] else: zone_id = zone_id[1:] zone_id = "%" + _encode_invalid_chars(zone_id, UNRESERVED_CHARS) return host[:start].lower() + zone_id + host[end:] else: return host.lower() elif not IPV4_RE.match(host): return six.ensure_str( b".".join([_idna_encode(label) for label in host.split(".")]) ) return host def _idna_encode(name): if name and any([ord(x) > 128 for x in name]): try: import idna except ImportError: six.raise_from( LocationParseError("Unable to parse URL without the 'idna' module"), None, ) try: return idna.encode(name.lower(), strict=True, std3_rules=True) except idna.IDNAError: six.raise_from( LocationParseError(u"Name '%s' is not a valid IDNA label" % name), None ) return name.lower().encode("ascii") def _encode_target(target): """Percent-encodes a request target so that there are no invalid characters""" path, query = TARGET_RE.match(target).groups() target = _encode_invalid_chars(path, PATH_CHARS) query = _encode_invalid_chars(query, QUERY_CHARS) if query is not None: target += "?" + query return target def parse_url(url): """ Given a url, return a parsed :class:`.Url` namedtuple. Best-effort is performed to parse incomplete urls. Fields not provided will be None. This parser is RFC 3986 compliant. The parser logic and helper functions are based heavily on work done in the ``rfc3986`` module. :param str url: URL to parse into a :class:`.Url` namedtuple. Partly backwards-compatible with :mod:`urlparse`. Example:: >>> parse_url('http://google.com/mail/') Url(scheme='http', host='google.com', port=None, path='/mail/', ...) >>> parse_url('google.com:80') Url(scheme=None, host='google.com', port=80, path=None, ...) >>> parse_url('/foo?bar') Url(scheme=None, host=None, port=None, path='/foo', query='bar', ...) """ if not url: # Empty return Url() source_url = url if not SCHEME_RE.search(url): url = "//" + url try: scheme, authority, path, query, fragment = URI_RE.match(url).groups() normalize_uri = scheme is None or scheme.lower() in NORMALIZABLE_SCHEMES if scheme: scheme = scheme.lower() if authority: auth, _, host_port = authority.rpartition("@") auth = auth or None host, port = _HOST_PORT_RE.match(host_port).groups() if auth and normalize_uri: auth = _encode_invalid_chars(auth, USERINFO_CHARS) if port == "": port = None else: auth, host, port = None, None, None if port is not None: port = int(port) if not (0 <= port <= 65535): raise LocationParseError(url) host = _normalize_host(host, scheme) if normalize_uri and path: path = _remove_path_dot_segments(path) path = _encode_invalid_chars(path, PATH_CHARS) if normalize_uri and query: query = _encode_invalid_chars(query, QUERY_CHARS) if normalize_uri and fragment: fragment = _encode_invalid_chars(fragment, FRAGMENT_CHARS) except (ValueError, AttributeError): return six.raise_from(LocationParseError(source_url), None) # For the sake of backwards compatibility we put empty # string values for path if there are any defined values # beyond the path in the URL. # TODO: Remove this when we break backwards compatibility. if not path: if query is not None or fragment is not None: path = "" else: path = None # Ensure that each part of the URL is a `str` for # backwards compatibility. if isinstance(url, six.text_type): ensure_func = six.ensure_text else: ensure_func = six.ensure_str def ensure_type(x): return x if x is None else ensure_func(x) return Url( scheme=ensure_type(scheme), auth=ensure_type(auth), host=ensure_type(host), port=port, path=ensure_type(path), query=ensure_type(query), fragment=ensure_type(fragment), ) def get_host(url): """ Deprecated. Use :func:`parse_url` instead. """ p = parse_url(url) return p.scheme or "http", p.hostname, p.port ��util/connection.py��0000644��00000011434�15027623470�0010243 0��ustar�00��from __future__ import absolute_import import socket from urllib3.exceptions import LocationParseError from ..contrib import _appengine_environ import six from .wait import NoWayToWaitForSocketError, wait_for_read def is_connection_dropped(conn): # Platform-specific """ Returns True if the connection is dropped and should be closed. :param conn: :class:`http.client.HTTPConnection` object. Note: For platforms like AppEngine, this will always return ``False`` to let the platform handle connection recycling transparently for us. """ sock = getattr(conn, "sock", False) if sock is False: # Platform-specific: AppEngine return False if sock is None: # Connection already closed (such as by httplib). return True try: # Returns True if readable, which here means it's been dropped return wait_for_read(sock, timeout=0.0) except NoWayToWaitForSocketError: # Platform-specific: AppEngine return False # This function is copied from socket.py in the Python 2.7 standard # library test suite. Added to its signature is only `socket_options`. # One additional modification is that we avoid binding to IPv6 servers # discovered in DNS if the system doesn't have IPv6 functionality. def create_connection( address, timeout=socket._GLOBAL_DEFAULT_TIMEOUT, source_address=None, socket_options=None, ): """Connect to address and return the socket object. Convenience function. Connect to address (a 2-tuple ``(host, port)``) and return the socket object. Passing the optional timeout parameter will set the timeout on the socket instance before attempting to connect. If no timeout is supplied, the global default timeout setting returned by :func:`socket.getdefaulttimeout` is used. If source_address is set it must be a tuple of (host, port) for the socket to bind as a source address before making the connection. An host of '' or port 0 tells the OS to use the default. """ host, port = address if host.startswith("["): host = host.strip("[]") err = None # Using the value from allowed_gai_family() in the context of getaddrinfo lets # us select whether to work with IPv4 DNS records, IPv6 records, or both. # The original create_connection function always returns all records. family = allowed_gai_family() try: host.encode("idna") except UnicodeError: return six.raise_from( LocationParseError(u"'%s', label empty or too long" % host), None ) for res in socket.getaddrinfo(host, port, family, socket.SOCK_STREAM): af, socktype, proto, canonname, sa = res sock = None try: sock = socket.socket(af, socktype, proto) # If provided, set socket level options before connecting. _set_socket_options(sock, socket_options) if timeout is not socket._GLOBAL_DEFAULT_TIMEOUT: sock.settimeout(timeout) if source_address: sock.bind(source_address) sock.connect(sa) return sock except socket.error as e: err = e if sock is not None: sock.close() sock = None if err is not None: raise err raise socket.error("getaddrinfo returns an empty list") def _set_socket_options(sock, options): if options is None: return for opt in options: sock.setsockopt(opt) def allowed_gai_family(): """This function is designed to work in the context of getaddrinfo, where family=socket.AF_UNSPEC is the default and will perform a DNS search for both IPv6 and IPv4 records.""" family = socket.AF_INET if HAS_IPV6: family = socket.AF_UNSPEC return family def _has_ipv6(host): """Returns True if the system can bind an IPv6 address.""" sock = None has_ipv6 = False # App Engine doesn't support IPV6 sockets and actually has a quota on the # number of sockets that can be used, so just early out here instead of # creating a socket needlessly. # See https://github.com/urllib3/urllib3/issues/1446 if _appengine_environ.is_appengine_sandbox(): return False if socket.has_ipv6: # has_ipv6 returns true if cPython was compiled with IPv6 support. # It does not tell us if the system has IPv6 support enabled. To # determine that we must bind to an IPv6 address. # https://github.com/urllib3/urllib3/pull/611 # https://bugs.python.org/issue658327 try: sock = socket.socket(socket.AF_INET6) sock.bind((host, 0)) has_ipv6 = True except Exception: pass if sock: sock.close() return has_ipv6 HAS_IPV6 = _has_ipv6("::1") ��util/response.py��0000644��00000006653�15027623470�0007751 0��ustar�00��from __future__ import absolute_import from email.errors import MultipartInvariantViolationDefect, StartBoundaryNotFoundDefect from ..exceptions import HeaderParsingError from six.moves import http_client as httplib def is_fp_closed(obj): """ Checks whether a given file-like object is closed. :param obj: The file-like object to check. """ try: # Check `isclosed()` first, in case Python3 doesn't set `closed`. # GH Issue #928 return obj.isclosed() except AttributeError: pass try: # Check via the official file-like-object way. return obj.closed except AttributeError: pass try: # Check if the object is a container for another file-like object that # gets released on exhaustion (e.g. HTTPResponse). return obj.fp is None except AttributeError: pass raise ValueError("Unable to determine whether fp is closed.") def assert_header_parsing(headers): """ Asserts whether all headers have been successfully parsed. Extracts encountered errors from the result of parsing headers. Only works on Python 3. :param http.client.HTTPMessage headers: Headers to verify. :raises urllib3.exceptions.HeaderParsingError: If parsing errors are found. """ # This will fail silently if we pass in the wrong kind of parameter. # To make debugging easier add an explicit check. if not isinstance(headers, httplib.HTTPMessage): raise TypeError("expected httplib.Message, got {0}.".format(type(headers))) defects = getattr(headers, "defects", None) get_payload = getattr(headers, "get_payload", None) unparsed_data = None if get_payload: # get_payload is actually email.message.Message.get_payload; # we're only interested in the result if it's not a multipart message if not headers.is_multipart(): payload = get_payload() if isinstance(payload, (bytes, str)): unparsed_data = payload if defects: # httplib is assuming a response body is available # when parsing headers even when httplib only sends # header data to parse_headers() This results in # defects on multipart responses in particular. # See: https://github.com/urllib3/urllib3/issues/800 # So we ignore the following defects: # - StartBoundaryNotFoundDefect: # The claimed start boundary was never found. # - MultipartInvariantViolationDefect: # A message claimed to be a multipart but no subparts were found. defects = [ defect for defect in defects if not isinstance( defect, (StartBoundaryNotFoundDefect, MultipartInvariantViolationDefect) ) ] if defects or unparsed_data: raise HeaderParsingError(defects=defects, unparsed_data=unparsed_data) def is_response_to_head(response): """ Checks whether the request of a response has been a HEAD-request. Handles the quirks of AppEngine. :param http.client.HTTPResponse response: Response to check if the originating request used 'HEAD' as a method. """ # FIXME: Can we do this somehow without accessing private httplib _method? method = response._method if isinstance(method, int): # Platform-specific: Appengine return method == 3 return method.upper() == "HEAD" ��util/retry.py��0000644��00000051656�15027623470�0007263 0��ustar�00��from __future__ import absolute_import import email import logging import re import time import warnings from collections import namedtuple from itertools import takewhile from ..exceptions import ( ConnectTimeoutError, InvalidHeader, MaxRetryError, ProtocolError, ProxyError, ReadTimeoutError, ResponseError, ) import six log = logging.getLogger(__name__) # Data structure for representing the metadata of requests that result in a retry. RequestHistory = namedtuple( "RequestHistory", ["method", "url", "error", "status", "redirect_location"] ) # TODO: In v2 we can remove this sentinel and metaclass with deprecated options. _Default = object() class _RetryMeta(type): @property def DEFAULT_METHOD_WHITELIST(cls): warnings.warn( "Using 'Retry.DEFAULT_METHOD_WHITELIST' is deprecated and " "will be removed in v2.0. Use 'Retry.DEFAULT_METHODS_ALLOWED' instead", DeprecationWarning, ) return cls.DEFAULT_ALLOWED_METHODS @DEFAULT_METHOD_WHITELIST.setter def DEFAULT_METHOD_WHITELIST(cls, value): warnings.warn( "Using 'Retry.DEFAULT_METHOD_WHITELIST' is deprecated and " "will be removed in v2.0. Use 'Retry.DEFAULT_ALLOWED_METHODS' instead", DeprecationWarning, ) cls.DEFAULT_ALLOWED_METHODS = value @property def DEFAULT_REDIRECT_HEADERS_BLACKLIST(cls): warnings.warn( "Using 'Retry.DEFAULT_REDIRECT_HEADERS_BLACKLIST' is deprecated and " "will be removed in v2.0. Use 'Retry.DEFAULT_REMOVE_HEADERS_ON_REDIRECT' instead", DeprecationWarning, ) return cls.DEFAULT_REMOVE_HEADERS_ON_REDIRECT @DEFAULT_REDIRECT_HEADERS_BLACKLIST.setter def DEFAULT_REDIRECT_HEADERS_BLACKLIST(cls, value): warnings.warn( "Using 'Retry.DEFAULT_REDIRECT_HEADERS_BLACKLIST' is deprecated and " "will be removed in v2.0. Use 'Retry.DEFAULT_REMOVE_HEADERS_ON_REDIRECT' instead", DeprecationWarning, ) cls.DEFAULT_REMOVE_HEADERS_ON_REDIRECT = value @six.add_metaclass(_RetryMeta) class Retry(object): """Retry configuration. Each retry attempt will create a new Retry object with updated values, so they can be safely reused. Retries can be defined as a default for a pool:: retries = Retry(connect=5, read=2, redirect=5) http = PoolManager(retries=retries) response = http.request('GET', 'http://example.com/') Or per-request (which overrides the default for the pool):: response = http.request('GET', 'http://example.com/', retries=Retry(10)) Retries can be disabled by passing ``False``:: response = http.request('GET', 'http://example.com/', retries=False) Errors will be wrapped in :class:`~urllib3.exceptions.MaxRetryError` unless retries are disabled, in which case the causing exception will be raised. :param int total: Total number of retries to allow. Takes precedence over other counts. Set to ``None`` to remove this constraint and fall back on other counts. Set to ``0`` to fail on the first retry. Set to ``False`` to disable and imply ``raise_on_redirect=False``. :param int connect: How many connection-related errors to retry on. These are errors raised before the request is sent to the remote server, which we assume has not triggered the server to process the request. Set to ``0`` to fail on the first retry of this type. :param int read: How many times to retry on read errors. These errors are raised after the request was sent to the server, so the request may have side-effects. Set to ``0`` to fail on the first retry of this type. :param int redirect: How many redirects to perform. Limit this to avoid infinite redirect loops. A redirect is a HTTP response with a status code 301, 302, 303, 307 or 308. Set to ``0`` to fail on the first retry of this type. Set to ``False`` to disable and imply ``raise_on_redirect=False``. :param int status: How many times to retry on bad status codes. These are retries made on responses, where status code matches ``status_forcelist``. Set to ``0`` to fail on the first retry of this type. :param int other: How many times to retry on other errors. Other errors are errors that are not connect, read, redirect or status errors. These errors might be raised after the request was sent to the server, so the request might have side-effects. Set to ``0`` to fail on the first retry of this type. If ``total`` is not set, it's a good idea to set this to 0 to account for unexpected edge cases and avoid infinite retry loops. :param iterable allowed_methods: Set of uppercased HTTP method verbs that we should retry on. By default, we only retry on methods which are considered to be idempotent (multiple requests with the same parameters end with the same state). See :attr:`Retry.DEFAULT_ALLOWED_METHODS`. Set to a ``False`` value to retry on any verb. .. warning:: Previously this parameter was named ``method_whitelist``, that usage is deprecated in v1.26.0 and will be removed in v2.0. :param iterable status_forcelist: A set of integer HTTP status codes that we should force a retry on. A retry is initiated if the request method is in ``allowed_methods`` and the response status code is in ``status_forcelist``. By default, this is disabled with ``None``. :param float backoff_factor: A backoff factor to apply between attempts after the second try (most errors are resolved immediately by a second try without a delay). urllib3 will sleep for:: {backoff factor} (2 ({number of total retries} - 1)) seconds. If the backoff_factor is 0.1, then :func:`.sleep` will sleep for [0.0s, 0.2s, 0.4s, ...] between retries. It will never be longer than :attr:`Retry.BACKOFF_MAX`. By default, backoff is disabled (set to 0). :param bool raise_on_redirect: Whether, if the number of redirects is exhausted, to raise a MaxRetryError, or to return a response with a response code in the 3xx range. :param bool raise_on_status: Similar meaning to ``raise_on_redirect``: whether we should raise an exception, or return a response, if status falls in ``status_forcelist`` range and retries have been exhausted. :param tuple history: The history of the request encountered during each call to :meth:`~Retry.increment`. The list is in the order the requests occurred. Each list item is of class :class:`RequestHistory`. :param bool respect_retry_after_header: Whether to respect Retry-After header on status codes defined as :attr:`Retry.RETRY_AFTER_STATUS_CODES` or not. :param iterable remove_headers_on_redirect: Sequence of headers to remove from the request when a response indicating a redirect is returned before firing off the redirected request. """ #: Default methods to be used for ``allowed_methods`` DEFAULT_ALLOWED_METHODS = frozenset( ["HEAD", "GET", "PUT", "DELETE", "OPTIONS", "TRACE"] ) #: Default status codes to be used for ``status_forcelist`` RETRY_AFTER_STATUS_CODES = frozenset([413, 429, 503]) #: Default headers to be used for ``remove_headers_on_redirect`` DEFAULT_REMOVE_HEADERS_ON_REDIRECT = frozenset( ["Cookie", "Authorization", "Proxy-Authorization"] ) #: Maximum backoff time. BACKOFF_MAX = 120 def __init__( self, total=10, connect=None, read=None, redirect=None, status=None, other=None, allowed_methods=_Default, status_forcelist=None, backoff_factor=0, raise_on_redirect=True, raise_on_status=True, history=None, respect_retry_after_header=True, remove_headers_on_redirect=_Default, # TODO: Deprecated, remove in v2.0 method_whitelist=_Default, ): if method_whitelist is not _Default: if allowed_methods is not _Default: raise ValueError( "Using both 'allowed_methods' and " "'method_whitelist' together is not allowed. " "Instead only use 'allowed_methods'" ) warnings.warn( "Using 'method_whitelist' with Retry is deprecated and " "will be removed in v2.0. Use 'allowed_methods' instead", DeprecationWarning, stacklevel=2, ) allowed_methods = method_whitelist if allowed_methods is _Default: allowed_methods = self.DEFAULT_ALLOWED_METHODS if remove_headers_on_redirect is _Default: remove_headers_on_redirect = self.DEFAULT_REMOVE_HEADERS_ON_REDIRECT self.total = total self.connect = connect self.read = read self.status = status self.other = other if redirect is False or total is False: redirect = 0 raise_on_redirect = False self.redirect = redirect self.status_forcelist = status_forcelist or set() self.allowed_methods = allowed_methods self.backoff_factor = backoff_factor self.raise_on_redirect = raise_on_redirect self.raise_on_status = raise_on_status self.history = history or tuple() self.respect_retry_after_header = respect_retry_after_header self.remove_headers_on_redirect = frozenset( [h.lower() for h in remove_headers_on_redirect] ) def new(self, kw): params = dict( total=self.total, connect=self.connect, read=self.read, redirect=self.redirect, status=self.status, other=self.other, status_forcelist=self.status_forcelist, backoff_factor=self.backoff_factor, raise_on_redirect=self.raise_on_redirect, raise_on_status=self.raise_on_status, history=self.history, remove_headers_on_redirect=self.remove_headers_on_redirect, respect_retry_after_header=self.respect_retry_after_header, ) # TODO: If already given in kw we use what's given to us # If not given we need to figure out what to pass. We decide # based on whether our class has the 'method_whitelist' property # and if so we pass the deprecated 'method_whitelist' otherwise # we use 'allowed_methods'. Remove in v2.0 if "method_whitelist" not in kw and "allowed_methods" not in kw: if "method_whitelist" in self.__dict__: warnings.warn( "Using 'method_whitelist' with Retry is deprecated and " "will be removed in v2.0. Use 'allowed_methods' instead", DeprecationWarning, ) params["method_whitelist"] = self.allowed_methods else: params["allowed_methods"] = self.allowed_methods params.update(kw) return type(self)(params) @classmethod def from_int(cls, retries, redirect=True, default=None): """Backwards-compatibility for the old retries format.""" if retries is None: retries = default if default is not None else cls.DEFAULT if isinstance(retries, Retry): return retries redirect = bool(redirect) and None new_retries = cls(retries, redirect=redirect) log.debug("Converted retries value: %r -> %r", retries, new_retries) return new_retries def get_backoff_time(self): """Formula for computing the current backoff :rtype: float """ # We want to consider only the last consecutive errors sequence (Ignore redirects). consecutive_errors_len = len( list( takewhile(lambda x: x.redirect_location is None, reversed(self.history)) ) ) if consecutive_errors_len <= 1: return 0 backoff_value = self.backoff_factor * (2 ** (consecutive_errors_len - 1)) return min(self.BACKOFF_MAX, backoff_value) def parse_retry_after(self, retry_after): # Whitespace: https://tools.ietf.org/html/rfc7230#section-3.2.4 if re.match(r"^\s[0-9]+\s$", retry_after): seconds = int(retry_after) else: retry_date_tuple = email.utils.parsedate_tz(retry_after) if retry_date_tuple is None: raise InvalidHeader("Invalid Retry-After header: %s" % retry_after) if retry_date_tuple[9] is None: # Python 2 # Assume UTC if no timezone was specified # On Python2.7, parsedate_tz returns None for a timezone offset # instead of 0 if no timezone is given, where mktime_tz treats # a None timezone offset as local time. retry_date_tuple = retry_date_tuple[:9] + (0,) + retry_date_tuple[10:] retry_date = email.utils.mktime_tz(retry_date_tuple) seconds = retry_date - time.time() if seconds < 0: seconds = 0 return seconds def get_retry_after(self, response): """Get the value of Retry-After in seconds.""" retry_after = response.getheader("Retry-After") if retry_after is None: return None return self.parse_retry_after(retry_after) def sleep_for_retry(self, response=None): retry_after = self.get_retry_after(response) if retry_after: time.sleep(retry_after) return True return False def _sleep_backoff(self): backoff = self.get_backoff_time() if backoff <= 0: return time.sleep(backoff) def sleep(self, response=None): """Sleep between retry attempts. This method will respect a server's ``Retry-After`` response header and sleep the duration of the time requested. If that is not present, it will use an exponential backoff. By default, the backoff factor is 0 and this method will return immediately. """ if self.respect_retry_after_header and response: slept = self.sleep_for_retry(response) if slept: return self._sleep_backoff() def _is_connection_error(self, err): """Errors when we're fairly sure that the server did not receive the request, so it should be safe to retry. """ if isinstance(err, ProxyError): err = err.original_error return isinstance(err, ConnectTimeoutError) def _is_read_error(self, err): """Errors that occur after the request has been started, so we should assume that the server began processing it. """ return isinstance(err, (ReadTimeoutError, ProtocolError)) def _is_method_retryable(self, method): """Checks if a given HTTP method should be retried upon, depending if it is included in the allowed_methods """ # TODO: For now favor if the Retry implementation sets its own method_whitelist # property outside of our constructor to avoid breaking custom implementations. if "method_whitelist" in self.__dict__: warnings.warn( "Using 'method_whitelist' with Retry is deprecated and " "will be removed in v2.0. Use 'allowed_methods' instead", DeprecationWarning, ) allowed_methods = self.method_whitelist else: allowed_methods = self.allowed_methods if allowed_methods and method.upper() not in allowed_methods: return False return True def is_retry(self, method, status_code, has_retry_after=False): """Is this method/status code retryable? (Based on allowlists and control variables such as the number of total retries to allow, whether to respect the Retry-After header, whether this header is present, and whether the returned status code is on the list of status codes to be retried upon on the presence of the aforementioned header) """ if not self._is_method_retryable(method): return False if self.status_forcelist and status_code in self.status_forcelist: return True return ( self.total and self.respect_retry_after_header and has_retry_after and (status_code in self.RETRY_AFTER_STATUS_CODES) ) def is_exhausted(self): """Are we out of retries?""" retry_counts = ( self.total, self.connect, self.read, self.redirect, self.status, self.other, ) retry_counts = list(filter(None, retry_counts)) if not retry_counts: return False return min(retry_counts) < 0 def increment( self, method=None, url=None, response=None, error=None, _pool=None, _stacktrace=None, ): """Return a new Retry object with incremented retry counters. :param response: A response object, or None, if the server did not return a response. :type response: :class:`~urllib3.response.HTTPResponse` :param Exception error: An error encountered during the request, or None if the response was received successfully. :return: A new ``Retry`` object. """ if self.total is False and error: # Disabled, indicate to re-raise the error. raise six.reraise(type(error), error, _stacktrace) total = self.total if total is not None: total -= 1 connect = self.connect read = self.read redirect = self.redirect status_count = self.status other = self.other cause = "unknown" status = None redirect_location = None if error and self._is_connection_error(error): # Connect retry? if connect is False: raise six.reraise(type(error), error, _stacktrace) elif connect is not None: connect -= 1 elif error and self._is_read_error(error): # Read retry? if read is False or not self._is_method_retryable(method): raise six.reraise(type(error), error, _stacktrace) elif read is not None: read -= 1 elif error: # Other retry? if other is not None: other -= 1 elif response and response.get_redirect_location(): # Redirect retry? if redirect is not None: redirect -= 1 cause = "too many redirects" redirect_location = response.get_redirect_location() status = response.status else: # Incrementing because of a server error like a 500 in # status_forcelist and the given method is in the allowed_methods cause = ResponseError.GENERIC_ERROR if response and response.status: if status_count is not None: status_count -= 1 cause = ResponseError.SPECIFIC_ERROR.format(status_code=response.status) status = response.status history = self.history + ( RequestHistory(method, url, error, status, redirect_location), ) new_retry = self.new( total=total, connect=connect, read=read, redirect=redirect, status=status_count, other=other, history=history, ) if new_retry.is_exhausted(): raise MaxRetryError(_pool, url, error or ResponseError(cause)) log.debug("Incremented Retry for (url='%s'): %r", url, new_retry) return new_retry def __repr__(self): return ( "{cls.__name__}(total={self.total}, connect={self.connect}, " "read={self.read}, redirect={self.redirect}, status={self.status})" ).format(cls=type(self), self=self) def __getattr__(self, item): if item == "method_whitelist": # TODO: Remove this deprecated alias in v2.0 warnings.warn( "Using 'method_whitelist' with Retry is deprecated and " "will be removed in v2.0. Use 'allowed_methods' instead", DeprecationWarning, ) return self.allowed_methods try: return getattr(super(Retry, self), item) except AttributeError: return getattr(Retry, item) # For backwards compatibility (equivalent to pre-v1.9): Retry.DEFAULT = Retry(3) ��util/request.py��0000644��00000010020�15027623470�0007562 0��ustar�00��from __future__ import absolute_import from base64 import b64encode from ..exceptions import UnrewindableBodyError from six import b, integer_types # Pass as a value within ``headers`` to skip # emitting some HTTP headers that are added automatically. # The only headers that are supported are ``Accept-Encoding``, # ``Host``, and ``User-Agent``. SKIP_HEADER = "@@@SKIP_HEADER@@@" SKIPPABLE_HEADERS = frozenset(["accept-encoding", "host", "user-agent"]) ACCEPT_ENCODING = "gzip,deflate" try: import brotli as _unused_module_brotli # noqa: F401 except ImportError: pass else: ACCEPT_ENCODING += ",br" _FAILEDTELL = object() def make_headers( keep_alive=None, accept_encoding=None, user_agent=None, basic_auth=None, proxy_basic_auth=None, disable_cache=None, ): """ Shortcuts for generating request headers. :param keep_alive: If ``True``, adds 'connection: keep-alive' header. :param accept_encoding: Can be a boolean, list, or string. ``True`` translates to 'gzip,deflate'. List will get joined by comma. String will be used as provided. :param user_agent: String representing the user-agent you want, such as "python-urllib3/0.6" :param basic_auth: Colon-separated username:password string for 'authorization: basic ...' auth header. :param proxy_basic_auth: Colon-separated username:password string for 'proxy-authorization: basic ...' auth header. :param disable_cache: If ``True``, adds 'cache-control: no-cache' header. Example:: >>> make_headers(keep_alive=True, user_agent="Batman/1.0") {'connection': 'keep-alive', 'user-agent': 'Batman/1.0'} >>> make_headers(accept_encoding=True) {'accept-encoding': 'gzip,deflate'} """ headers = {} if accept_encoding: if isinstance(accept_encoding, str): pass elif isinstance(accept_encoding, list): accept_encoding = ",".join(accept_encoding) else: accept_encoding = ACCEPT_ENCODING headers["accept-encoding"] = accept_encoding if user_agent: headers["user-agent"] = user_agent if keep_alive: headers["connection"] = "keep-alive" if basic_auth: headers["authorization"] = "Basic " + b64encode(b(basic_auth)).decode("utf-8") if proxy_basic_auth: headers["proxy-authorization"] = "Basic " + b64encode( b(proxy_basic_auth) ).decode("utf-8") if disable_cache: headers["cache-control"] = "no-cache" return headers def set_file_position(body, pos): """ If a position is provided, move file to that point. Otherwise, we'll attempt to record a position for future use. """ if pos is not None: rewind_body(body, pos) elif getattr(body, "tell", None) is not None: try: pos = body.tell() except (IOError, OSError): # This differentiates from None, allowing us to catch # a failed `tell()` later when trying to rewind the body. pos = _FAILEDTELL return pos def rewind_body(body, body_pos): """ Attempt to rewind body to a certain position. Primarily used for request redirects and retries. :param body: File-like object that supports seek. :param int pos: Position to seek to in file. """ body_seek = getattr(body, "seek", None) if body_seek is not None and isinstance(body_pos, integer_types): try: body_seek(body_pos) except (IOError, OSError): raise UnrewindableBodyError( "An error occurred when rewinding request body for redirect/retry." ) elif body_pos is _FAILEDTELL: raise UnrewindableBodyError( "Unable to record file position for rewinding " "request body during a redirect/retry." ) else: raise ValueError( "body_pos must be of type integer, instead it was %s." % type(body_pos) ) ��util/ssl_.py��0000644��00000041306�15027623470�0007045 0��ustar�00��from __future__ import absolute_import import hmac import os import sys import warnings from binascii import hexlify, unhexlify from hashlib import md5, sha1, sha256 from ..exceptions import ( InsecurePlatformWarning, ProxySchemeUnsupported, SNIMissingWarning, SSLError, ) import six from .url import BRACELESS_IPV6_ADDRZ_RE, IPV4_RE SSLContext = None SSLTransport = None HAS_SNI = False IS_PYOPENSSL = False IS_SECURETRANSPORT = False ALPN_PROTOCOLS = ["http/1.1"] # Maps the length of a digest to a possible hash function producing this digest HASHFUNC_MAP = {32: md5, 40: sha1, 64: sha256} def _const_compare_digest_backport(a, b): """ Compare two digests of equal length in constant time. The digests must be of type str/bytes. Returns True if the digests match, and False otherwise. """ result = abs(len(a) - len(b)) for left, right in zip(bytearray(a), bytearray(b)): result \|= left ^ right return result == 0 _const_compare_digest = getattr(hmac, "compare_digest", _const_compare_digest_backport) try: # Test for SSL features import ssl from ssl import CERT_REQUIRED, wrap_socket except ImportError: pass try: from ssl import HAS_SNI # Has SNI? except ImportError: pass try: from .ssltransport import SSLTransport except ImportError: pass try: # Platform-specific: Python 3.6 from ssl import PROTOCOL_TLS PROTOCOL_SSLv23 = PROTOCOL_TLS except ImportError: try: from ssl import PROTOCOL_SSLv23 as PROTOCOL_TLS PROTOCOL_SSLv23 = PROTOCOL_TLS except ImportError: PROTOCOL_SSLv23 = PROTOCOL_TLS = 2 try: from ssl import PROTOCOL_TLS_CLIENT except ImportError: PROTOCOL_TLS_CLIENT = PROTOCOL_TLS try: from ssl import OP_NO_COMPRESSION, OP_NO_SSLv2, OP_NO_SSLv3 except ImportError: OP_NO_SSLv2, OP_NO_SSLv3 = 0x1000000, 0x2000000 OP_NO_COMPRESSION = 0x20000 try: # OP_NO_TICKET was added in Python 3.6 from ssl import OP_NO_TICKET except ImportError: OP_NO_TICKET = 0x4000 # A secure default. # Sources for more information on TLS ciphers: # # - https://wiki.mozilla.org/Security/Server_Side_TLS # - https://www.ssllabs.com/projects/best-practices/index.html # - https://hynek.me/articles/hardening-your-web-servers-ssl-ciphers/ # # The general intent is: # - prefer cipher suites that offer perfect forward secrecy (DHE/ECDHE), # - prefer ECDHE over DHE for better performance, # - prefer any AES-GCM and ChaCha20 over any AES-CBC for better performance and # security, # - prefer AES-GCM over ChaCha20 because hardware-accelerated AES is common, # - disable NULL authentication, MD5 MACs, DSS, and other # insecure ciphers for security reasons. # - NOTE: TLS 1.3 cipher suites are managed through a different interface # not exposed by CPython (yet!) and are enabled by default if they're available. DEFAULT_CIPHERS = ":".join( [ "ECDHE+AESGCM", "ECDHE+CHACHA20", "DHE+AESGCM", "DHE+CHACHA20", "ECDH+AESGCM", "DH+AESGCM", "ECDH+AES", "DH+AES", "RSA+AESGCM", "RSA+AES", "!aNULL", "!eNULL", "!MD5", "!DSS", ] ) try: from ssl import SSLContext # Modern SSL? except ImportError: class SSLContext(object): # Platform-specific: Python 2 def __init__(self, protocol_version): self.protocol = protocol_version # Use default values from a real SSLContext self.check_hostname = False self.verify_mode = ssl.CERT_NONE self.ca_certs = None self.options = 0 self.certfile = None self.keyfile = None self.ciphers = None def load_cert_chain(self, certfile, keyfile): self.certfile = certfile self.keyfile = keyfile def load_verify_locations(self, cafile=None, capath=None, cadata=None): self.ca_certs = cafile if capath is not None: raise SSLError("CA directories not supported in older Pythons") if cadata is not None: raise SSLError("CA data not supported in older Pythons") def set_ciphers(self, cipher_suite): self.ciphers = cipher_suite def wrap_socket(self, socket, server_hostname=None, server_side=False): warnings.warn( "A true SSLContext object is not available. This prevents " "urllib3 from configuring SSL appropriately and may cause " "certain SSL connections to fail. You can upgrade to a newer " "version of Python to solve this. For more information, see " "https://urllib3.readthedocs.io/en/latest/advanced-usage.html" "#ssl-warnings", InsecurePlatformWarning, ) kwargs = { "keyfile": self.keyfile, "certfile": self.certfile, "ca_certs": self.ca_certs, "cert_reqs": self.verify_mode, "ssl_version": self.protocol, "server_side": server_side, } return wrap_socket(socket, ciphers=self.ciphers, *kwargs) def assert_fingerprint(cert, fingerprint): """ Checks if given fingerprint matches the supplied certificate. :param cert: Certificate as bytes object. :param fingerprint: Fingerprint as string of hexdigits, can be interspersed by colons. """ fingerprint = fingerprint.replace(":", "").lower() digest_length = len(fingerprint) hashfunc = HASHFUNC_MAP.get(digest_length) if not hashfunc: raise SSLError("Fingerprint of invalid length: {0}".format(fingerprint)) # We need encode() here for py32; works on py2 and p33. fingerprint_bytes = unhexlify(fingerprint.encode()) cert_digest = hashfunc(cert).digest() if not _const_compare_digest(cert_digest, fingerprint_bytes): raise SSLError( 'Fingerprints did not match. Expected "{0}", got "{1}".'.format( fingerprint, hexlify(cert_digest) ) ) def resolve_cert_reqs(candidate): """ Resolves the argument to a numeric constant, which can be passed to the wrap_socket function/method from the ssl module. Defaults to :data:`ssl.CERT_REQUIRED`. If given a string it is assumed to be the name of the constant in the :mod:`ssl` module or its abbreviation. (So you can specify `REQUIRED` instead of `CERT_REQUIRED`. If it's neither `None` nor a string we assume it is already the numeric constant which can directly be passed to wrap_socket. """ if candidate is None: return CERT_REQUIRED if isinstance(candidate, str): res = getattr(ssl, candidate, None) if res is None: res = getattr(ssl, "CERT_" + candidate) return res return candidate def resolve_ssl_version(candidate): """ like resolve_cert_reqs """ if candidate is None: return PROTOCOL_TLS if isinstance(candidate, str): res = getattr(ssl, candidate, None) if res is None: res = getattr(ssl, "PROTOCOL_" + candidate) return res return candidate def create_urllib3_context( ssl_version=None, cert_reqs=None, options=None, ciphers=None ): """All arguments have the same meaning as ``ssl_wrap_socket``. By default, this function does a lot of the same work that ``ssl.create_default_context`` does on Python 3.4+. It: - Disables SSLv2, SSLv3, and compression - Sets a restricted set of server ciphers If you wish to enable SSLv3, you can do:: from urllib3.util import ssl_ context = ssl_.create_urllib3_context() context.options &= ~ssl_.OP_NO_SSLv3 You can do the same to enable compression (substituting ``COMPRESSION`` for ``SSLv3`` in the last line above). :param ssl_version: The desired protocol version to use. This will default to PROTOCOL_SSLv23 which will negotiate the highest protocol that both the server and your installation of OpenSSL support. :param cert_reqs: Whether to require the certificate verification. This defaults to ``ssl.CERT_REQUIRED``. :param options: Specific OpenSSL options. These default to ``ssl.OP_NO_SSLv2``, ``ssl.OP_NO_SSLv3``, ``ssl.OP_NO_COMPRESSION``, and ``ssl.OP_NO_TICKET``. :param ciphers: Which cipher suites to allow the server to select. :returns: Constructed SSLContext object with specified options :rtype: SSLContext """ # PROTOCOL_TLS is deprecated in Python 3.10 if not ssl_version or ssl_version == PROTOCOL_TLS: ssl_version = PROTOCOL_TLS_CLIENT context = SSLContext(ssl_version) context.set_ciphers(ciphers or DEFAULT_CIPHERS) # Setting the default here, as we may have no ssl module on import cert_reqs = ssl.CERT_REQUIRED if cert_reqs is None else cert_reqs if options is None: options = 0 # SSLv2 is easily broken and is considered harmful and dangerous options \|= OP_NO_SSLv2 # SSLv3 has several problems and is now dangerous options \|= OP_NO_SSLv3 # Disable compression to prevent CRIME attacks for OpenSSL 1.0+ # (issue #309) options \|= OP_NO_COMPRESSION # TLSv1.2 only. Unless set explicitly, do not request tickets. # This may save some bandwidth on wire, and although the ticket is encrypted, # there is a risk associated with it being on wire, # if the server is not rotating its ticketing keys properly. options \|= OP_NO_TICKET context.options \|= options # Enable post-handshake authentication for TLS 1.3, see GH #1634. PHA is # necessary for conditional client cert authentication with TLS 1.3. # The attribute is None for OpenSSL <= 1.1.0 or does not exist in older # versions of Python. We only enable on Python 3.7.4+ or if certificate # verification is enabled to work around Python issue #37428 # See: https://bugs.python.org/issue37428 if (cert_reqs == ssl.CERT_REQUIRED or sys.version_info >= (3, 7, 4)) and getattr( context, "post_handshake_auth", None ) is not None: context.post_handshake_auth = True def disable_check_hostname(): if ( getattr(context, "check_hostname", None) is not None ): # Platform-specific: Python 3.2 # We do our own verification, including fingerprints and alternative # hostnames. So disable it here context.check_hostname = False # The order of the below lines setting verify_mode and check_hostname # matter due to safe-guards SSLContext has to prevent an SSLContext with # check_hostname=True, verify_mode=NONE/OPTIONAL. This is made even more # complex because we don't know whether PROTOCOL_TLS_CLIENT will be used # or not so we don't know the initial state of the freshly created SSLContext. if cert_reqs == ssl.CERT_REQUIRED: context.verify_mode = cert_reqs disable_check_hostname() else: disable_check_hostname() context.verify_mode = cert_reqs # Enable logging of TLS session keys via defacto standard environment variable # 'SSLKEYLOGFILE', if the feature is available (Python 3.8+). Skip empty values. if hasattr(context, "keylog_filename"): sslkeylogfile = os.environ.get("SSLKEYLOGFILE") if sslkeylogfile: context.keylog_filename = sslkeylogfile return context def ssl_wrap_socket( sock, keyfile=None, certfile=None, cert_reqs=None, ca_certs=None, server_hostname=None, ssl_version=None, ciphers=None, ssl_context=None, ca_cert_dir=None, key_password=None, ca_cert_data=None, tls_in_tls=False, ): """ All arguments except for server_hostname, ssl_context, and ca_cert_dir have the same meaning as they do when using :func:`ssl.wrap_socket`. :param server_hostname: When SNI is supported, the expected hostname of the certificate :param ssl_context: A pre-made :class:`SSLContext` object. If none is provided, one will be created using :func:`create_urllib3_context`. :param ciphers: A string of ciphers we wish the client to support. :param ca_cert_dir: A directory containing CA certificates in multiple separate files, as supported by OpenSSL's -CApath flag or the capath argument to SSLContext.load_verify_locations(). :param key_password: Optional password if the keyfile is encrypted. :param ca_cert_data: Optional string containing CA certificates in PEM format suitable for passing as the cadata parameter to SSLContext.load_verify_locations() :param tls_in_tls: Use SSLTransport to wrap the existing socket. """ context = ssl_context if context is None: # Note: This branch of code and all the variables in it are no longer # used by urllib3 itself. We should consider deprecating and removing # this code. context = create_urllib3_context(ssl_version, cert_reqs, ciphers=ciphers) if ca_certs or ca_cert_dir or ca_cert_data: try: context.load_verify_locations(ca_certs, ca_cert_dir, ca_cert_data) except (IOError, OSError) as e: raise SSLError(e) elif ssl_context is None and hasattr(context, "load_default_certs"): # try to load OS default certs; works well on Windows (require Python3.4+) context.load_default_certs() # Attempt to detect if we get the goofy behavior of the # keyfile being encrypted and OpenSSL asking for the # passphrase via the terminal and instead error out. if keyfile and key_password is None and _is_key_file_encrypted(keyfile): raise SSLError("Client private key is encrypted, password is required") if certfile: if key_password is None: context.load_cert_chain(certfile, keyfile) else: context.load_cert_chain(certfile, keyfile, key_password) try: if hasattr(context, "set_alpn_protocols"): context.set_alpn_protocols(ALPN_PROTOCOLS) except NotImplementedError: pass # If we detect server_hostname is an IP address then the SNI # extension should not be used according to RFC3546 Section 3.1 use_sni_hostname = server_hostname and not is_ipaddress(server_hostname) # SecureTransport uses server_hostname in certificate verification. send_sni = (use_sni_hostname and HAS_SNI) or ( IS_SECURETRANSPORT and server_hostname ) # Do not warn the user if server_hostname is an invalid SNI hostname. if not HAS_SNI and use_sni_hostname: warnings.warn( "An HTTPS request has been made, but the SNI (Server Name " "Indication) extension to TLS is not available on this platform. " "This may cause the server to present an incorrect TLS " "certificate, which can cause validation failures. You can upgrade to " "a newer version of Python to solve this. For more information, see " "https://urllib3.readthedocs.io/en/latest/advanced-usage.html" "#ssl-warnings", SNIMissingWarning, ) if send_sni: ssl_sock = _ssl_wrap_socket_impl( sock, context, tls_in_tls, server_hostname=server_hostname ) else: ssl_sock = _ssl_wrap_socket_impl(sock, context, tls_in_tls) return ssl_sock def is_ipaddress(hostname): """Detects whether the hostname given is an IPv4 or IPv6 address. Also detects IPv6 addresses with Zone IDs. :param str hostname: Hostname to examine. :return: True if the hostname is an IP address, False otherwise. """ if not six.PY2 and isinstance(hostname, bytes): # IDN A-label bytes are ASCII compatible. hostname = hostname.decode("ascii") return bool(IPV4_RE.match(hostname) or BRACELESS_IPV6_ADDRZ_RE.match(hostname)) def _is_key_file_encrypted(key_file): """Detects if a key file is encrypted or not.""" with open(key_file, "r") as f: for line in f: # Look for Proc-Type: 4,ENCRYPTED if "ENCRYPTED" in line: return True return False def _ssl_wrap_socket_impl(sock, ssl_context, tls_in_tls, server_hostname=None): if tls_in_tls: if not SSLTransport: # Import error, ssl is not available. raise ProxySchemeUnsupported( "TLS in TLS requires support for the 'ssl' module" ) SSLTransport._validate_ssl_context_for_tls_in_tls(ssl_context) return SSLTransport(sock, ssl_context, server_hostname) if server_hostname: return ssl_context.wrap_socket(sock, server_hostname=server_hostname) else: return ssl_context.wrap_socket(sock) ��util/__init__.py��0000644��00000002203�15027623470�0007635 0��ustar�00��from __future__ import absolute_import # For backwards compatibility, provide imports that used to be here. from .connection import is_connection_dropped from .request import SKIP_HEADER, SKIPPABLE_HEADERS, make_headers from .response import is_fp_closed from .retry import Retry from .ssl_ import ( ALPN_PROTOCOLS, HAS_SNI, IS_PYOPENSSL, IS_SECURETRANSPORT, PROTOCOL_TLS, SSLContext, assert_fingerprint, resolve_cert_reqs, resolve_ssl_version, ssl_wrap_socket, ) from .timeout import Timeout, current_time from .url import Url, get_host, parse_url, split_first from .wait import wait_for_read, wait_for_write __all__ = ( "HAS_SNI", "IS_PYOPENSSL", "IS_SECURETRANSPORT", "SSLContext", "PROTOCOL_TLS", "ALPN_PROTOCOLS", "Retry", "Timeout", "Url", "assert_fingerprint", "current_time", "is_connection_dropped", "is_fp_closed", "get_host", "parse_url", "make_headers", "resolve_cert_reqs", "resolve_ssl_version", "split_first", "ssl_wrap_socket", "wait_for_read", "wait_for_write", "SKIP_HEADER", "SKIPPABLE_HEADERS", ) ��__pycache__/fields.cpython-310.pyc��0000644��00000017655�15027623470�0012747 0��ustar�00��o ��Yht!��@��s��d�dl�mZ�d�dlZd�dlZd�dlZd�dlZddd�Zdd��Zdd d �Z e � dd��ed�d �D��dd��Zdd��Z e ZG�dd��de�ZdS�)��)�absolute_importN�application/octet-streamc��C��s��\|�rt��\|��d�p \|S�\|S�)z� Guess the "Content-Type" of a file. :param filename: The filename to guess the "Content-Type" of using :mod:`mimetypes`. :param default: If no "Content-Type" can be guessed, default to `default`. r��)� mimetypes� guess_type)�filename�default��r��0/usr/lib/python3/dist-packages/urllib3/fields.py�guess_content_type ��s�� r ��c�� s��t��tj�r��d��t��fdd�dD��s0d\|��f�}z\|�d��W�\|S��ttfy/��Y�nw�tjr8��d��t j ��d��d\|��f��tjrM��d��S�)a!�� Helper function to format and quote a single header parameter using the strategy defined in RFC 2231. 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Supports list of (k, v) tuples and dicts. c��s��\|�] \}}\|\|fV��qd�S��Nr��.0�k�vr��r��r�� <genexpr>:��ziter_fields.<locals>.<genexpr>c��s��r��r��r��r ��r��r��r��r$��<��r%��)r��r��r��r��)r��r��r��r��iter_fields-��s�� r&��c��C��s��t��}\|du�r t��}t\|��D�]8}\|�td\|��t\|��\|��\|j}t\|t �r.t \|�}t\|tj�r<t\|��\|��n\|�\|��\|�d��q\|�td\|��t d\|��}\|� ��\|fS�)aQ�� Encode a dictionary of ``fields`` using the multipart/form-data MIME format. :param fields: Dictionary of fields or list of (key, :class:`~urllib3.fields.RequestField`). :param boundary: If not specified, then a random boundary will be generated using :func:`urllib3.filepost.choose_boundary`. Nz--%s s�� z--%s-- z multipart/form-data; boundary=%s)r��r��r��writer��writer�render_headers�datar��int�strr�� text_type�getvalue)r��r��bodyr��r��content_typer��r��r��encode_multipart_formdata?��s �� r1��r��)� __future__r��r ��codecsr��ior��r��r��r��r��lookupr(��r��r��r&��r1��r��r��r��r��<module>��s�� connection.py��0000644��00000044433�15027623470�0007273 0��ustar�00��from __future__ import absolute_import import datetime import logging import os import re import socket import warnings from socket import error as SocketError from socket import timeout as SocketTimeout import six from six.moves.http_client import HTTPConnection as _HTTPConnection from six.moves.http_client import HTTPException # noqa: F401 from .util.proxy import create_proxy_ssl_context try: # Compiled with SSL? import ssl BaseSSLError = ssl.SSLError except (ImportError, AttributeError): # Platform-specific: No SSL. ssl = None class BaseSSLError(BaseException): pass try: # Python 3: not a no-op, we're adding this to the namespace so it can be imported. ConnectionError = ConnectionError except NameError: # Python 2 class ConnectionError(Exception): pass try: # Python 3: # Not a no-op, we're adding this to the namespace so it can be imported. BrokenPipeError = BrokenPipeError except NameError: # Python 2: class BrokenPipeError(Exception): pass from ._collections import HTTPHeaderDict # noqa (historical, removed in v2) from ._version import __version__ from .exceptions import ( ConnectTimeoutError, NewConnectionError, SubjectAltNameWarning, SystemTimeWarning, ) from .packages.ssl_match_hostname import CertificateError, match_hostname from .util import SKIP_HEADER, SKIPPABLE_HEADERS, connection from .util.ssl_ import ( assert_fingerprint, create_urllib3_context, resolve_cert_reqs, resolve_ssl_version, ssl_wrap_socket, ) log = logging.getLogger(__name__) port_by_scheme = {"http": 80, "https": 443} # When it comes time to update this value as a part of regular maintenance # (ie test_recent_date is failing) update it to ~6 months before the current date. RECENT_DATE = datetime.date(2020, 7, 1) _CONTAINS_CONTROL_CHAR_RE = re.compile(r"[^-!#$%&'+.^_`\|~0-9a-zA-Z]") class HTTPConnection(_HTTPConnection, object): """ Based on :class:`http.client.HTTPConnection` but provides an extra constructor backwards-compatibility layer between older and newer Pythons. Additional keyword parameters are used to configure attributes of the connection. Accepted parameters include: - ``strict``: See the documentation on :class:`urllib3.connectionpool.HTTPConnectionPool` - ``source_address``: Set the source address for the current connection. - ``socket_options``: Set specific options on the underlying socket. If not specified, then defaults are loaded from ``HTTPConnection.default_socket_options`` which includes disabling Nagle's algorithm (sets TCP_NODELAY to 1) unless the connection is behind a proxy. For example, if you wish to enable TCP Keep Alive in addition to the defaults, you might pass: .. code-block:: python HTTPConnection.default_socket_options + [ (socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1), ] Or you may want to disable the defaults by passing an empty list (e.g., ``[]``). """ default_port = port_by_scheme["http"] #: Disable Nagle's algorithm by default. #: ``[(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1)]`` default_socket_options = [(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1)] #: Whether this connection verifies the host's certificate. is_verified = False def __init__(self, args, kw): if not six.PY2: kw.pop("strict", None) # Pre-set source_address. self.source_address = kw.get("source_address") #: The socket options provided by the user. If no options are #: provided, we use the default options. self.socket_options = kw.pop("socket_options", self.default_socket_options) # Proxy options provided by the user. self.proxy = kw.pop("proxy", None) self.proxy_config = kw.pop("proxy_config", None) _HTTPConnection.__init__(self, args, kw) @property def host(self): """ Getter method to remove any trailing dots that indicate the hostname is an FQDN. In general, SSL certificates don't include the trailing dot indicating a fully-qualified domain name, and thus, they don't validate properly when checked against a domain name that includes the dot. In addition, some servers may not expect to receive the trailing dot when provided. However, the hostname with trailing dot is critical to DNS resolution; doing a lookup with the trailing dot will properly only resolve the appropriate FQDN, whereas a lookup without a trailing dot will search the system's search domain list. Thus, it's important to keep the original host around for use only in those cases where it's appropriate (i.e., when doing DNS lookup to establish the actual TCP connection across which we're going to send HTTP requests). """ return self._dns_host.rstrip(".") @host.setter def host(self, value): """ Setter for the `host` property. We assume that only urllib3 uses the _dns_host attribute; httplib itself only uses `host`, and it seems reasonable that other libraries follow suit. """ self._dns_host = value def _new_conn(self): """Establish a socket connection and set nodelay settings on it. :return: New socket connection. """ extra_kw = {} if self.source_address: extra_kw["source_address"] = self.source_address if self.socket_options: extra_kw["socket_options"] = self.socket_options try: conn = connection.create_connection( (self._dns_host, self.port), self.timeout, extra_kw ) except SocketTimeout: raise ConnectTimeoutError( self, "Connection to %s timed out. (connect timeout=%s)" % (self.host, self.timeout), ) except SocketError as e: raise NewConnectionError( self, "Failed to establish a new connection: %s" % e ) return conn def _is_using_tunnel(self): # Google App Engine's httplib does not define _tunnel_host return getattr(self, "_tunnel_host", None) def _prepare_conn(self, conn): self.sock = conn if self._is_using_tunnel(): # TODO: Fix tunnel so it doesn't depend on self.sock state. self._tunnel() # Mark this connection as not reusable self.auto_open = 0 def connect(self): conn = self._new_conn() self._prepare_conn(conn) def putrequest(self, method, url, args, kwargs): """ """ # Empty docstring because the indentation of CPython's implementation # is broken but we don't want this method in our documentation. match = _CONTAINS_CONTROL_CHAR_RE.search(method) if match: raise ValueError( "Method cannot contain non-token characters %r (found at least %r)" % (method, match.group()) ) return _HTTPConnection.putrequest(self, method, url, args, *kwargs) def putheader(self, header, values): """ """ if not any(isinstance(v, str) and v == SKIP_HEADER for v in values): _HTTPConnection.putheader(self, header, values) elif six.ensure_str(header.lower()) not in SKIPPABLE_HEADERS: raise ValueError( "urllib3.util.SKIP_HEADER only supports '%s'" % ("', '".join(map(str.title, sorted(SKIPPABLE_HEADERS))),) ) def request(self, method, url, body=None, headers=None): if headers is None: headers = {} else: # Avoid modifying the headers passed into .request() headers = headers.copy() if "user-agent" not in (six.ensure_str(k.lower()) for k in headers): headers["User-Agent"] = _get_default_user_agent() super(HTTPConnection, self).request(method, url, body=body, headers=headers) def request_chunked(self, method, url, body=None, headers=None): """ Alternative to the common request method, which sends the body with chunked encoding and not as one block """ headers = headers or {} header_keys = set([six.ensure_str(k.lower()) for k in headers]) skip_accept_encoding = "accept-encoding" in header_keys skip_host = "host" in header_keys self.putrequest( method, url, skip_accept_encoding=skip_accept_encoding, skip_host=skip_host ) if "user-agent" not in header_keys: self.putheader("User-Agent", _get_default_user_agent()) for header, value in headers.items(): self.putheader(header, value) if "transfer-encoding" not in headers: self.putheader("Transfer-Encoding", "chunked") self.endheaders() if body is not None: stringish_types = six.string_types + (bytes,) if isinstance(body, stringish_types): body = (body,) for chunk in body: if not chunk: continue if not isinstance(chunk, bytes): chunk = chunk.encode("utf8") len_str = hex(len(chunk))[2:] to_send = bytearray(len_str.encode()) to_send += b"\r\n" to_send += chunk to_send += b"\r\n" self.send(to_send) # After the if clause, to always have a closed body self.send(b"0\r\n\r\n") class HTTPSConnection(HTTPConnection): """ Many of the parameters to this constructor are passed to the underlying SSL socket by means of :py:func:`urllib3.util.ssl_wrap_socket`. """ default_port = port_by_scheme["https"] cert_reqs = None ca_certs = None ca_cert_dir = None ca_cert_data = None ssl_version = None assert_fingerprint = None tls_in_tls_required = False def __init__( self, host, port=None, key_file=None, cert_file=None, key_password=None, strict=None, timeout=socket._GLOBAL_DEFAULT_TIMEOUT, ssl_context=None, server_hostname=None, kw ): HTTPConnection.__init__(self, host, port, strict=strict, timeout=timeout, kw) self.key_file = key_file self.cert_file = cert_file self.key_password = key_password self.ssl_context = ssl_context self.server_hostname = server_hostname # Required property for Google AppEngine 1.9.0 which otherwise causes # HTTPS requests to go out as HTTP. (See Issue #356) self._protocol = "https" def set_cert( self, key_file=None, cert_file=None, cert_reqs=None, key_password=None, ca_certs=None, assert_hostname=None, assert_fingerprint=None, ca_cert_dir=None, ca_cert_data=None, ): """ This method should only be called once, before the connection is used. """ # If cert_reqs is not provided we'll assume CERT_REQUIRED unless we also # have an SSLContext object in which case we'll use its verify_mode. if cert_reqs is None: if self.ssl_context is not None: cert_reqs = self.ssl_context.verify_mode else: cert_reqs = resolve_cert_reqs(None) self.key_file = key_file self.cert_file = cert_file self.cert_reqs = cert_reqs self.key_password = key_password self.assert_hostname = assert_hostname self.assert_fingerprint = assert_fingerprint self.ca_certs = ca_certs and os.path.expanduser(ca_certs) self.ca_cert_dir = ca_cert_dir and os.path.expanduser(ca_cert_dir) self.ca_cert_data = ca_cert_data def connect(self): # Add certificate verification conn = self._new_conn() hostname = self.host tls_in_tls = False if self._is_using_tunnel(): if self.tls_in_tls_required: conn = self._connect_tls_proxy(hostname, conn) tls_in_tls = True self.sock = conn # Calls self._set_hostport(), so self.host is # self._tunnel_host below. self._tunnel() # Mark this connection as not reusable self.auto_open = 0 # Override the host with the one we're requesting data from. hostname = self._tunnel_host server_hostname = hostname if self.server_hostname is not None: server_hostname = self.server_hostname is_time_off = datetime.date.today() < RECENT_DATE if is_time_off: warnings.warn( ( "System time is way off (before {0}). This will probably " "lead to SSL verification errors" ).format(RECENT_DATE), SystemTimeWarning, ) # Wrap socket using verification with the root certs in # trusted_root_certs default_ssl_context = False if self.ssl_context is None: default_ssl_context = True self.ssl_context = create_urllib3_context( ssl_version=resolve_ssl_version(self.ssl_version), cert_reqs=resolve_cert_reqs(self.cert_reqs), ) context = self.ssl_context context.verify_mode = resolve_cert_reqs(self.cert_reqs) # Try to load OS default certs if none are given. # Works well on Windows (requires Python3.4+) if ( not self.ca_certs and not self.ca_cert_dir and not self.ca_cert_data and default_ssl_context and hasattr(context, "load_default_certs") ): context.load_default_certs() self.sock = ssl_wrap_socket( sock=conn, keyfile=self.key_file, certfile=self.cert_file, key_password=self.key_password, ca_certs=self.ca_certs, ca_cert_dir=self.ca_cert_dir, ca_cert_data=self.ca_cert_data, server_hostname=server_hostname, ssl_context=context, tls_in_tls=tls_in_tls, ) # If we're using all defaults and the connection # is TLSv1 or TLSv1.1 we throw a DeprecationWarning # for the host. if ( default_ssl_context and self.ssl_version is None and hasattr(self.sock, "version") and self.sock.version() in {"TLSv1", "TLSv1.1"} ): warnings.warn( "Negotiating TLSv1/TLSv1.1 by default is deprecated " "and will be disabled in urllib3 v2.0.0. Connecting to " "'%s' with '%s' can be enabled by explicitly opting-in " "with 'ssl_version'" % (self.host, self.sock.version()), DeprecationWarning, ) if self.assert_fingerprint: assert_fingerprint( self.sock.getpeercert(binary_form=True), self.assert_fingerprint ) elif ( context.verify_mode != ssl.CERT_NONE and not getattr(context, "check_hostname", False) and self.assert_hostname is not False ): # While urllib3 attempts to always turn off hostname matching from # the TLS library, this cannot always be done. So we check whether # the TLS Library still thinks it's matching hostnames. cert = self.sock.getpeercert() if not cert.get("subjectAltName", ()): warnings.warn( ( "Certificate for {0} has no `subjectAltName`, falling back to check for a " "`commonName` for now. This feature is being removed by major browsers and " "deprecated by RFC 2818. (See https://github.com/urllib3/urllib3/issues/497 " "for details.)".format(hostname) ), SubjectAltNameWarning, ) _match_hostname(cert, self.assert_hostname or server_hostname) self.is_verified = ( context.verify_mode == ssl.CERT_REQUIRED or self.assert_fingerprint is not None ) def _connect_tls_proxy(self, hostname, conn): """ Establish a TLS connection to the proxy using the provided SSL context. """ proxy_config = self.proxy_config ssl_context = proxy_config.ssl_context if ssl_context: # If the user provided a proxy context, we assume CA and client # certificates have already been set return ssl_wrap_socket( sock=conn, server_hostname=hostname, ssl_context=ssl_context, ) ssl_context = create_proxy_ssl_context( self.ssl_version, self.cert_reqs, self.ca_certs, self.ca_cert_dir, self.ca_cert_data, ) # By default urllib3's SSLContext disables `check_hostname` and uses # a custom check. For proxies we're good with relying on the default # verification. ssl_context.check_hostname = True # If no cert was provided, use only the default options for server # certificate validation return ssl_wrap_socket( sock=conn, ca_certs=self.ca_certs, ca_cert_dir=self.ca_cert_dir, ca_cert_data=self.ca_cert_data, server_hostname=hostname, ssl_context=ssl_context, ) def _match_hostname(cert, asserted_hostname): try: match_hostname(cert, asserted_hostname) except CertificateError as e: log.warning( "Certificate did not match expected hostname: %s. Certificate: %s", asserted_hostname, cert, ) # Add cert to exception and reraise so client code can inspect # the cert when catching the exception, if they want to e._peer_cert = cert raise def _get_default_user_agent(): return "python-urllib3/%s" % __version__ class DummyConnection(object): """Used to detect a failed ConnectionCls import.""" pass if not ssl: HTTPSConnection = DummyConnection # noqa: F811 VerifiedHTTPSConnection = HTTPSConnection ��response.py��0000644��00000067034�15027623470�0006774 0��ustar�00��from __future__ import absolute_import import io import logging import zlib from contextlib import contextmanager from socket import error as SocketError from socket import timeout as SocketTimeout try: import brotli except ImportError: brotli = None from ._collections import HTTPHeaderDict from .connection import BaseSSLError, HTTPException from .exceptions import ( BodyNotHttplibCompatible, DecodeError, HTTPError, IncompleteRead, InvalidChunkLength, InvalidHeader, ProtocolError, ReadTimeoutError, ResponseNotChunked, SSLError, ) import six from .util.response import is_fp_closed, is_response_to_head log = logging.getLogger(__name__) class DeflateDecoder(object): def __init__(self): self._first_try = True self._data = b"" self._obj = zlib.decompressobj() def __getattr__(self, name): return getattr(self._obj, name) def decompress(self, data): if not data: return data if not self._first_try: return self._obj.decompress(data) self._data += data try: decompressed = self._obj.decompress(data) if decompressed: self._first_try = False self._data = None return decompressed except zlib.error: self._first_try = False self._obj = zlib.decompressobj(-zlib.MAX_WBITS) try: return self.decompress(self._data) finally: self._data = None class GzipDecoderState(object): FIRST_MEMBER = 0 OTHER_MEMBERS = 1 SWALLOW_DATA = 2 class GzipDecoder(object): def __init__(self): self._obj = zlib.decompressobj(16 + zlib.MAX_WBITS) self._state = GzipDecoderState.FIRST_MEMBER def __getattr__(self, name): return getattr(self._obj, name) def decompress(self, data): ret = bytearray() if self._state == GzipDecoderState.SWALLOW_DATA or not data: return bytes(ret) while True: try: ret += self._obj.decompress(data) except zlib.error: previous_state = self._state # Ignore data after the first error self._state = GzipDecoderState.SWALLOW_DATA if previous_state == GzipDecoderState.OTHER_MEMBERS: # Allow trailing garbage acceptable in other gzip clients return bytes(ret) raise data = self._obj.unused_data if not data: return bytes(ret) self._state = GzipDecoderState.OTHER_MEMBERS self._obj = zlib.decompressobj(16 + zlib.MAX_WBITS) if brotli is not None: class BrotliDecoder(object): # Supports both 'brotlipy' and 'Brotli' packages # since they share an import name. The top branches # are for 'brotlipy' and bottom branches for 'Brotli' def __init__(self): self._obj = brotli.Decompressor() if hasattr(self._obj, "decompress"): self.decompress = self._obj.decompress else: self.decompress = self._obj.process def flush(self): if hasattr(self._obj, "flush"): return self._obj.flush() return b"" class MultiDecoder(object): """ From RFC7231: If one or more encodings have been applied to a representation, the sender that applied the encodings MUST generate a Content-Encoding header field that lists the content codings in the order in which they were applied. """ def __init__(self, modes): self._decoders = [_get_decoder(m.strip()) for m in modes.split(",")] def flush(self): return self._decoders[0].flush() def decompress(self, data): for d in reversed(self._decoders): data = d.decompress(data) return data def _get_decoder(mode): if "," in mode: return MultiDecoder(mode) if mode == "gzip": return GzipDecoder() if brotli is not None and mode == "br": return BrotliDecoder() return DeflateDecoder() class HTTPResponse(io.IOBase): """ HTTP Response container. Backwards-compatible with :class:`http.client.HTTPResponse` but the response ``body`` is loaded and decoded on-demand when the ``data`` property is accessed. This class is also compatible with the Python standard library's :mod:`io` module, and can hence be treated as a readable object in the context of that framework. Extra parameters for behaviour not present in :class:`http.client.HTTPResponse`: :param preload_content: If True, the response's body will be preloaded during construction. :param decode_content: If True, will attempt to decode the body based on the 'content-encoding' header. :param original_response: When this HTTPResponse wrapper is generated from an :class:`http.client.HTTPResponse` object, it's convenient to include the original for debug purposes. It's otherwise unused. :param retries: The retries contains the last :class:`~urllib3.util.retry.Retry` that was used during the request. :param enforce_content_length: Enforce content length checking. Body returned by server must match value of Content-Length header, if present. Otherwise, raise error. """ CONTENT_DECODERS = ["gzip", "deflate"] if brotli is not None: CONTENT_DECODERS += ["br"] REDIRECT_STATUSES = [301, 302, 303, 307, 308] def __init__( self, body="", headers=None, status=0, version=0, reason=None, strict=0, preload_content=True, decode_content=True, original_response=None, pool=None, connection=None, msg=None, retries=None, enforce_content_length=False, request_method=None, request_url=None, auto_close=True, ): if isinstance(headers, HTTPHeaderDict): self.headers = headers else: self.headers = HTTPHeaderDict(headers) self.status = status self.version = version self.reason = reason self.strict = strict self.decode_content = decode_content self.retries = retries self.enforce_content_length = enforce_content_length self.auto_close = auto_close self._decoder = None self._body = None self._fp = None self._original_response = original_response self._fp_bytes_read = 0 self.msg = msg self._request_url = request_url if body and isinstance(body, (six.string_types, bytes)): self._body = body self._pool = pool self._connection = connection if hasattr(body, "read"): self._fp = body # Are we using the chunked-style of transfer encoding? self.chunked = False self.chunk_left = None tr_enc = self.headers.get("transfer-encoding", "").lower() # Don't incur the penalty of creating a list and then discarding it encodings = (enc.strip() for enc in tr_enc.split(",")) if "chunked" in encodings: self.chunked = True # Determine length of response self.length_remaining = self._init_length(request_method) # If requested, preload the body. if preload_content and not self._body: self._body = self.read(decode_content=decode_content) def get_redirect_location(self): """ Should we redirect and where to? :returns: Truthy redirect location string if we got a redirect status code and valid location. ``None`` if redirect status and no location. ``False`` if not a redirect status code. """ if self.status in self.REDIRECT_STATUSES: return self.headers.get("location") return False def release_conn(self): if not self._pool or not self._connection: return self._pool._put_conn(self._connection) self._connection = None def drain_conn(self): """ Read and discard any remaining HTTP response data in the response connection. Unread data in the HTTPResponse connection blocks the connection from being released back to the pool. """ try: self.read() except (HTTPError, SocketError, BaseSSLError, HTTPException): pass @property def data(self): # For backwards-compat with earlier urllib3 0.4 and earlier. if self._body: return self._body if self._fp: return self.read(cache_content=True) @property def connection(self): return self._connection def isclosed(self): return is_fp_closed(self._fp) def tell(self): """ Obtain the number of bytes pulled over the wire so far. May differ from the amount of content returned by :meth:``urllib3.response.HTTPResponse.read`` if bytes are encoded on the wire (e.g, compressed). """ return self._fp_bytes_read def _init_length(self, request_method): """ Set initial length value for Response content if available. """ length = self.headers.get("content-length") if length is not None: if self.chunked: # This Response will fail with an IncompleteRead if it can't be # received as chunked. This method falls back to attempt reading # the response before raising an exception. log.warning( "Received response with both Content-Length and " "Transfer-Encoding set. This is expressly forbidden " "by RFC 7230 sec 3.3.2. Ignoring Content-Length and " "attempting to process response as Transfer-Encoding: " "chunked." ) return None try: # RFC 7230 section 3.3.2 specifies multiple content lengths can # be sent in a single Content-Length header # (e.g. Content-Length: 42, 42). This line ensures the values # are all valid ints and that as long as the `set` length is 1, # all values are the same. Otherwise, the header is invalid. lengths = set([int(val) for val in length.split(",")]) if len(lengths) > 1: raise InvalidHeader( "Content-Length contained multiple " "unmatching values (%s)" % length ) length = lengths.pop() except ValueError: length = None else: if length < 0: length = None # Convert status to int for comparison # In some cases, httplib returns a status of "_UNKNOWN" try: status = int(self.status) except ValueError: status = 0 # Check for responses that shouldn't include a body if status in (204, 304) or 100 <= status < 200 or request_method == "HEAD": length = 0 return length def _init_decoder(self): """ Set-up the _decoder attribute if necessary. """ # Note: content-encoding value should be case-insensitive, per RFC 7230 # Section 3.2 content_encoding = self.headers.get("content-encoding", "").lower() if self._decoder is None: if content_encoding in self.CONTENT_DECODERS: self._decoder = _get_decoder(content_encoding) elif "," in content_encoding: encodings = [ e.strip() for e in content_encoding.split(",") if e.strip() in self.CONTENT_DECODERS ] if len(encodings): self._decoder = _get_decoder(content_encoding) DECODER_ERROR_CLASSES = (IOError, zlib.error) if brotli is not None: DECODER_ERROR_CLASSES += (brotli.error,) def _decode(self, data, decode_content, flush_decoder): """ Decode the data passed in and potentially flush the decoder. """ if not decode_content: return data try: if self._decoder: data = self._decoder.decompress(data) except self.DECODER_ERROR_CLASSES as e: content_encoding = self.headers.get("content-encoding", "").lower() raise DecodeError( "Received response with content-encoding: %s, but " "failed to decode it." % content_encoding, e, ) if flush_decoder: data += self._flush_decoder() return data def _flush_decoder(self): """ Flushes the decoder. Should only be called if the decoder is actually being used. """ if self._decoder: buf = self._decoder.decompress(b"") return buf + self._decoder.flush() return b"" @contextmanager def _error_catcher(self): """ Catch low-level python exceptions, instead re-raising urllib3 variants, so that low-level exceptions are not leaked in the high-level api. On exit, release the connection back to the pool. """ clean_exit = False try: try: yield except SocketTimeout: # FIXME: Ideally we'd like to include the url in the ReadTimeoutError but # there is yet no clean way to get at it from this context. raise ReadTimeoutError(self._pool, None, "Read timed out.") except BaseSSLError as e: # FIXME: Is there a better way to differentiate between SSLErrors? if "read operation timed out" not in str(e): # SSL errors related to framing/MAC get wrapped and reraised here raise SSLError(e) raise ReadTimeoutError(self._pool, None, "Read timed out.") except (HTTPException, SocketError) as e: # This includes IncompleteRead. raise ProtocolError("Connection broken: %r" % e, e) # If no exception is thrown, we should avoid cleaning up # unnecessarily. clean_exit = True finally: # If we didn't terminate cleanly, we need to throw away our # connection. if not clean_exit: # The response may not be closed but we're not going to use it # anymore so close it now to ensure that the connection is # released back to the pool. if self._original_response: self._original_response.close() # Closing the response may not actually be sufficient to close # everything, so if we have a hold of the connection close that # too. if self._connection: self._connection.close() # If we hold the original response but it's closed now, we should # return the connection back to the pool. if self._original_response and self._original_response.isclosed(): self.release_conn() def read(self, amt=None, decode_content=None, cache_content=False): """ Similar to :meth:`http.client.HTTPResponse.read`, but with two additional parameters: ``decode_content`` and ``cache_content``. :param amt: How much of the content to read. If specified, caching is skipped because it doesn't make sense to cache partial content as the full response. :param decode_content: If True, will attempt to decode the body based on the 'content-encoding' header. :param cache_content: If True, will save the returned data such that the same result is returned despite of the state of the underlying file object. This is useful if you want the ``.data`` property to continue working after having ``.read()`` the file object. (Overridden if ``amt`` is set.) """ self._init_decoder() if decode_content is None: decode_content = self.decode_content if self._fp is None: return flush_decoder = False fp_closed = getattr(self._fp, "closed", False) with self._error_catcher(): if amt is None: # cStringIO doesn't like amt=None data = self._fp.read() if not fp_closed else b"" flush_decoder = True else: cache_content = False data = self._fp.read(amt) if not fp_closed else b"" if ( amt != 0 and not data ): # Platform-specific: Buggy versions of Python. # Close the connection when no data is returned # # This is redundant to what httplib/http.client _should_ # already do. However, versions of python released before # December 15, 2012 (http://bugs.python.org/issue16298) do # not properly close the connection in all cases. There is # no harm in redundantly calling close. self._fp.close() flush_decoder = True if self.enforce_content_length and self.length_remaining not in ( 0, None, ): # This is an edge case that httplib failed to cover due # to concerns of backward compatibility. We're # addressing it here to make sure IncompleteRead is # raised during streaming, so all calls with incorrect # Content-Length are caught. raise IncompleteRead(self._fp_bytes_read, self.length_remaining) if data: self._fp_bytes_read += len(data) if self.length_remaining is not None: self.length_remaining -= len(data) data = self._decode(data, decode_content, flush_decoder) if cache_content: self._body = data return data def stream(self, amt=2 * 16, decode_content=None): """ A generator wrapper for the read() method. A call will block until ``amt`` bytes have been read from the connection or until the connection is closed. :param amt: How much of the content to read. The generator will return up to much data per iteration, but may return less. This is particularly likely when using compressed data. However, the empty string will never be returned. :param decode_content: If True, will attempt to decode the body based on the 'content-encoding' header. """ if self.chunked and self.supports_chunked_reads(): for line in self.read_chunked(amt, decode_content=decode_content): yield line else: while not is_fp_closed(self._fp): data = self.read(amt=amt, decode_content=decode_content) if data: yield data @classmethod def from_httplib(ResponseCls, r, response_kw): """ Given an :class:`http.client.HTTPResponse` instance ``r``, return a corresponding :class:`urllib3.response.HTTPResponse` object. Remaining parameters are passed to the HTTPResponse constructor, along with ``original_response=r``. """ headers = r.msg if not isinstance(headers, HTTPHeaderDict): if six.PY2: # Python 2.7 headers = HTTPHeaderDict.from_httplib(headers) else: headers = HTTPHeaderDict(headers.items()) # HTTPResponse objects in Python 3 don't have a .strict attribute strict = getattr(r, "strict", 0) resp = ResponseCls( body=r, headers=headers, status=r.status, version=r.version, reason=r.reason, strict=strict, original_response=r, response_kw ) return resp # Backwards-compatibility methods for http.client.HTTPResponse def getheaders(self): return self.headers def getheader(self, name, default=None): return self.headers.get(name, default) # Backwards compatibility for http.cookiejar def info(self): return self.headers # Overrides from io.IOBase def close(self): if not self.closed: self._fp.close() if self._connection: self._connection.close() if not self.auto_close: io.IOBase.close(self) @property def closed(self): if not self.auto_close: return io.IOBase.closed.__get__(self) elif self._fp is None: return True elif hasattr(self._fp, "isclosed"): return self._fp.isclosed() elif hasattr(self._fp, "closed"): return self._fp.closed else: return True def fileno(self): if self._fp is None: raise IOError("HTTPResponse has no file to get a fileno from") elif hasattr(self._fp, "fileno"): return self._fp.fileno() else: raise IOError( "The file-like object this HTTPResponse is wrapped " "around has no file descriptor" ) def flush(self): if ( self._fp is not None and hasattr(self._fp, "flush") and not getattr(self._fp, "closed", False) ): return self._fp.flush() def readable(self): # This method is required for `io` module compatibility. return True def readinto(self, b): # This method is required for `io` module compatibility. temp = self.read(len(b)) if len(temp) == 0: return 0 else: b[: len(temp)] = temp return len(temp) def supports_chunked_reads(self): """ Checks if the underlying file-like object looks like a :class:`http.client.HTTPResponse` object. We do this by testing for the fp attribute. If it is present we assume it returns raw chunks as processed by read_chunked(). """ return hasattr(self._fp, "fp") def _update_chunk_length(self): # First, we'll figure out length of a chunk and then # we'll try to read it from socket. if self.chunk_left is not None: return line = self._fp.fp.readline() line = line.split(b";", 1)[0] try: self.chunk_left = int(line, 16) except ValueError: # Invalid chunked protocol response, abort. self.close() raise InvalidChunkLength(self, line) def _handle_chunk(self, amt): returned_chunk = None if amt is None: chunk = self._fp._safe_read(self.chunk_left) returned_chunk = chunk self._fp._safe_read(2) # Toss the CRLF at the end of the chunk. self.chunk_left = None elif amt < self.chunk_left: value = self._fp._safe_read(amt) self.chunk_left = self.chunk_left - amt returned_chunk = value elif amt == self.chunk_left: value = self._fp._safe_read(amt) self._fp._safe_read(2) # Toss the CRLF at the end of the chunk. self.chunk_left = None returned_chunk = value else: # amt > self.chunk_left returned_chunk = self._fp._safe_read(self.chunk_left) self._fp._safe_read(2) # Toss the CRLF at the end of the chunk. self.chunk_left = None return returned_chunk def read_chunked(self, amt=None, decode_content=None): """ Similar to :meth:`HTTPResponse.read`, but with an additional parameter: ``decode_content``. :param amt: How much of the content to read. If specified, caching is skipped because it doesn't make sense to cache partial content as the full response. :param decode_content: If True, will attempt to decode the body based on the 'content-encoding' header. """ self._init_decoder() # FIXME: Rewrite this method and make it a class with a better structured logic. if not self.chunked: raise ResponseNotChunked( "Response is not chunked. " "Header 'transfer-encoding: chunked' is missing." ) if not self.supports_chunked_reads(): raise BodyNotHttplibCompatible( "Body should be http.client.HTTPResponse like. " "It should have have an fp attribute which returns raw chunks." ) with self._error_catcher(): # Don't bother reading the body of a HEAD request. if self._original_response and is_response_to_head(self._original_response): self._original_response.close() return # If a response is already read and closed # then return immediately. if self._fp.fp is None: return while True: self._update_chunk_length() if self.chunk_left == 0: break chunk = self._handle_chunk(amt) decoded = self._decode( chunk, decode_content=decode_content, flush_decoder=False ) if decoded: yield decoded if decode_content: # On CPython and PyPy, we should never need to flush the # decoder. However, on Jython we might need to, so # lets defensively do it anyway. decoded = self._flush_decoder() if decoded: # Platform-specific: Jython. yield decoded # Chunk content ends with \r\n: discard it. while True: line = self._fp.fp.readline() if not line: # Some sites may not end with '\r\n'. break if line == b"\r\n": break # We read everything; close the "file". if self._original_response: self._original_response.close() def geturl(self): """ Returns the URL that was the source of this response. If the request that generated this response redirected, this method will return the final redirect location. """ if self.retries is not None and len(self.retries.history): return self.retries.history[-1].redirect_location else: return self._request_url def __iter__(self): buffer = [] for chunk in self.stream(decode_content=True): if b"\n" in chunk: chunk = chunk.split(b"\n") yield b"".join(buffer) + chunk[0] + b"\n" for x in chunk[1:-1]: yield x + b"\n" if chunk[-1]: buffer = [chunk[-1]] else: buffer = [] else: buffer.append(chunk) if buffer: yield b"".join(buffer) ��request.py��0000644��00000013527�15027623470�0006624 0��ustar�00��from __future__ import absolute_import from .filepost import encode_multipart_formdata from six.moves.urllib.parse import urlencode __all__ = ["RequestMethods"] class RequestMethods(object): """ Convenience mixin for classes who implement a :meth:`urlopen` method, such as :class:`urllib3.HTTPConnectionPool` and :class:`urllib3.PoolManager`. Provides behavior for making common types of HTTP request methods and decides which type of request field encoding to use. Specifically, :meth:`.request_encode_url` is for sending requests whose fields are encoded in the URL (such as GET, HEAD, DELETE). :meth:`.request_encode_body` is for sending requests whose fields are encoded in the body of the request using multipart or www-form-urlencoded (such as for POST, PUT, PATCH). :meth:`.request` is for making any kind of request, it will look up the appropriate encoding format and use one of the above two methods to make the request. Initializer parameters: :param headers: Headers to include with all requests, unless other headers are given explicitly. """ _encode_url_methods = {"DELETE", "GET", "HEAD", "OPTIONS"} def __init__(self, headers=None): self.headers = headers or {} def urlopen( self, method, url, body=None, headers=None, encode_multipart=True, multipart_boundary=None, kw ): # Abstract raise NotImplementedError( "Classes extending RequestMethods must implement " "their own ``urlopen`` method." ) def request(self, method, url, fields=None, headers=None, urlopen_kw): """ Make a request using :meth:`urlopen` with the appropriate encoding of ``fields`` based on the ``method`` used. This is a convenience method that requires the least amount of manual effort. It can be used in most situations, while still having the option to drop down to more specific methods when necessary, such as :meth:`request_encode_url`, :meth:`request_encode_body`, or even the lowest level :meth:`urlopen`. """ method = method.upper() urlopen_kw["request_url"] = url if method in self._encode_url_methods: return self.request_encode_url( method, url, fields=fields, headers=headers, urlopen_kw ) else: return self.request_encode_body( method, url, fields=fields, headers=headers, urlopen_kw ) def request_encode_url(self, method, url, fields=None, headers=None, urlopen_kw): """ Make a request using :meth:`urlopen` with the ``fields`` encoded in the url. This is useful for request methods like GET, HEAD, DELETE, etc. """ if headers is None: headers = self.headers extra_kw = {"headers": headers} extra_kw.update(urlopen_kw) if fields: url += "?" + urlencode(fields) return self.urlopen(method, url, extra_kw) def request_encode_body( self, method, url, fields=None, headers=None, encode_multipart=True, multipart_boundary=None, urlopen_kw ): """ Make a request using :meth:`urlopen` with the ``fields`` encoded in the body. This is useful for request methods like POST, PUT, PATCH, etc. When ``encode_multipart=True`` (default), then :func:`urllib3.encode_multipart_formdata` is used to encode the payload with the appropriate content type. Otherwise :func:`urllib.parse.urlencode` is used with the 'application/x-www-form-urlencoded' content type. Multipart encoding must be used when posting files, and it's reasonably safe to use it in other times too. However, it may break request signing, such as with OAuth. Supports an optional ``fields`` parameter of key/value strings AND key/filetuple. A filetuple is a (filename, data, MIME type) tuple where the MIME type is optional. For example:: fields = { 'foo': 'bar', 'fakefile': ('foofile.txt', 'contents of foofile'), 'realfile': ('barfile.txt', open('realfile').read()), 'typedfile': ('bazfile.bin', open('bazfile').read(), 'image/jpeg'), 'nonamefile': 'contents of nonamefile field', } When uploading a file, providing a filename (the first parameter of the tuple) is optional but recommended to best mimic behavior of browsers. Note that if ``headers`` are supplied, the 'Content-Type' header will be overwritten because it depends on the dynamic random boundary string which is used to compose the body of the request. The random boundary string can be explicitly set with the ``multipart_boundary`` parameter. """ if headers is None: headers = self.headers extra_kw = {"headers": {}} if fields: if "body" in urlopen_kw: raise TypeError( "request got values for both 'fields' and 'body', can only specify one." ) if encode_multipart: body, content_type = encode_multipart_formdata( fields, boundary=multipart_boundary ) else: body, content_type = ( urlencode(fields), "application/x-www-form-urlencoded", ) extra_kw["body"] = body extra_kw["headers"] = {"Content-Type": content_type} extra_kw["headers"].update(headers) extra_kw.update(urlopen_kw) return self.urlopen(method, url, extra_kw) ��packages/__pycache__/__init__.cpython-310.pyc��0000644��00000000556�15027623470�0015006 0��ustar�00��o ��Yh,��@��sN��d�dl�mZ�dZzd�dlmZ�[d�dlZW�dS��ey&��ddlmZ�Y�dS�w�)��)�absolute_import)�ssl_match_hostname)�CertificateErrorN��)� __future__r��__all__�sslr��r��ImportError��r��r��;/usr/lib/python3/dist-packages/urllib3/packages/__init__.py�<module>��s��packages/backports/__pycache__/__init__.cpython-310.pyc��0000644��00000000242�15027623470�0016766 0��ustar�00��o ��~�`��@��s��d�S�)N��r��r��r��E/usr/lib/python3/dist-packages/urllib3/packages/backports/__init__.py�<module>��s��packages/backports/__pycache__/makefile.cpython-310.pyc��0000644��00000002356�15027623470�0017014 0��ustar�00��o ��~�`��@��s(��d�Z�ddlZddlmZ� ddd�ZdS�)z� backports.makefile ~~~~~~~~~~~~~~~~~~ Backports the Python 3 ``socket.makefile`` method for use with anything that wants to create a "fake" socket object. ��N)�SocketIO�rc�� C��s��t�\|�h�d�kstd\|f��d\|v�}d\|v�p\|�}\|s \|s J��d\|v�}d} \|r,\| d7�} \|r2\| d7�} t\|�\| �} \|��jd7��_\|du�rDd }\|d k�rKtj}\|d krW\|sUtd��\| S�\|rc\|rct�\| \| \|�}n\|rlt�\| \|�}n \|spJ��t�\| \|�}\|rz\|S�t� \|\|\|\|�}\|\|_ \|S�)z: Backport of ``socket.makefile`` from Python 3.5. >��br��wz&invalid mode %r (only r, w, b allowed)r��r��r��N��r��z!unbuffered streams must be binary)�set� ValueErrorr��_makefile_refs�io�DEFAULT_BUFFER_SIZE�BufferedRWPair�BufferedReader�BufferedWriter� TextIOWrapper�mode) �selfr�� buffering�encoding�errors�newline�writing�reading�binary�rawmode�raw�buffer�text��r��E/usr/lib/python3/dist-packages/urllib3/packages/backports/makefile.py�backport_makefile ��s@�� r!��)r��NNNN)�__doc__r��socketr��r!��r��r��r��r ��<module>��s ��packages/backports/makefile.py��0000644��00000002611�15027623470�0012447 0��ustar�00��# -- coding: utf-8 -- """ backports.makefile ~~~~~~~~~~~~~~~~~~ Backports the Python 3 ``socket.makefile`` method for use with anything that wants to create a "fake" socket object. """ import io from socket import SocketIO def backport_makefile( self, mode="r", buffering=None, encoding=None, errors=None, newline=None ): """ Backport of ``socket.makefile`` from Python 3.5. """ if not set(mode) <= {"r", "w", "b"}: raise ValueError("invalid mode %r (only r, w, b allowed)" % (mode,)) writing = "w" in mode reading = "r" in mode or not writing assert reading or writing binary = "b" in mode rawmode = "" if reading: rawmode += "r" if writing: rawmode += "w" raw = SocketIO(self, rawmode) self._makefile_refs += 1 if buffering is None: buffering = -1 if buffering < 0: buffering = io.DEFAULT_BUFFER_SIZE if buffering == 0: if not binary: raise ValueError("unbuffered streams must be binary") return raw if reading and writing: buffer = io.BufferedRWPair(raw, raw, buffering) elif reading: buffer = io.BufferedReader(raw, buffering) else: assert writing buffer = io.BufferedWriter(raw, buffering) if binary: return buffer text = io.TextIOWrapper(buffer, encoding, errors, newline) text.mode = mode return text ��packages/backports/__init__.py��0000644��00000000000�15027623470�0012417 0��ustar�00��packages/ssl_match_hostname/_implementation.py��0000644��00000013057�15027623470�0015747 0��ustar�00��"""The match_hostname() function from Python 3.3.3, essential when using SSL.""" # Note: This file is under the PSF license as the code comes from the python # stdlib. http://docs.python.org/3/license.html import re import sys # ipaddress has been backported to 2.6+ in pypi. If it is installed on the # system, use it to handle IPAddress ServerAltnames (this was added in # python-3.5) otherwise only do DNS matching. This allows # backports.ssl_match_hostname to continue to be used in Python 2.7. try: import ipaddress except ImportError: ipaddress = None __version__ = "3.5.0.1" class CertificateError(ValueError): pass def _dnsname_match(dn, hostname, max_wildcards=1): """Matching according to RFC 6125, section 6.4.3 http://tools.ietf.org/html/rfc6125#section-6.4.3 """ pats = [] if not dn: return False # Ported from python3-syntax: # leftmost, remainder = dn.split(r'.') parts = dn.split(r".") leftmost = parts[0] remainder = parts[1:] wildcards = leftmost.count("") if wildcards > max_wildcards: # Issue #17980: avoid denials of service by refusing more # than one wildcard per fragment. A survey of established # policy among SSL implementations showed it to be a # reasonable choice. raise CertificateError( "too many wildcards in certificate DNS name: " + repr(dn) ) # speed up common case w/o wildcards if not wildcards: return dn.lower() == hostname.lower() # RFC 6125, section 6.4.3, subitem 1. # The client SHOULD NOT attempt to match a presented identifier in which # the wildcard character comprises a label other than the left-most label. if leftmost == "": # When '' is a fragment by itself, it matches a non-empty dotless # fragment. pats.append("[^.]+") elif leftmost.startswith("xn--") or hostname.startswith("xn--"): # RFC 6125, section 6.4.3, subitem 3. # The client SHOULD NOT attempt to match a presented identifier # where the wildcard character is embedded within an A-label or # U-label of an internationalized domain name. pats.append(re.escape(leftmost)) else: # Otherwise, '' matches any dotless string, e.g. www pats.append(re.escape(leftmost).replace(r"\", "[^.]")) # add the remaining fragments, ignore any wildcards for frag in remainder: pats.append(re.escape(frag)) pat = re.compile(r"\A" + r"\.".join(pats) + r"\Z", re.IGNORECASE) return pat.match(hostname) def _to_unicode(obj): if isinstance(obj, str) and sys.version_info < (3,): obj = unicode(obj, encoding="ascii", errors="strict") return obj def _ipaddress_match(ipname, host_ip): """Exact matching of IP addresses. RFC 6125 explicitly doesn't define an algorithm for this (section 1.7.2 - "Out of Scope"). """ # OpenSSL may add a trailing newline to a subjectAltName's IP address # Divergence from upstream: ipaddress can't handle byte str ip = ipaddress.ip_address(_to_unicode(ipname).rstrip()) return ip == host_ip def match_hostname(cert, hostname): """Verify that cert (in decoded format as returned by SSLSocket.getpeercert()) matches the hostname. RFC 2818 and RFC 6125 rules are followed, but IP addresses are not accepted for hostname. CertificateError is raised on failure. On success, the function returns nothing. """ if not cert: raise ValueError( "empty or no certificate, match_hostname needs a " "SSL socket or SSL context with either " "CERT_OPTIONAL or CERT_REQUIRED" ) try: # Divergence from upstream: ipaddress can't handle byte str host_ip = ipaddress.ip_address(_to_unicode(hostname)) except ValueError: # Not an IP address (common case) host_ip = None except UnicodeError: # Divergence from upstream: Have to deal with ipaddress not taking # byte strings. addresses should be all ascii, so we consider it not # an ipaddress in this case host_ip = None except AttributeError: # Divergence from upstream: Make ipaddress library optional if ipaddress is None: host_ip = None else: raise dnsnames = [] san = cert.get("subjectAltName", ()) for key, value in san: if key == "DNS": if host_ip is None and _dnsname_match(value, hostname): return dnsnames.append(value) elif key == "IP Address": if host_ip is not None and _ipaddress_match(value, host_ip): return dnsnames.append(value) if not dnsnames: # The subject is only checked when there is no dNSName entry # in subjectAltName for sub in cert.get("subject", ()): for key, value in sub: # XXX according to RFC 2818, the most specific Common Name # must be used. if key == "commonName": if _dnsname_match(value, hostname): return dnsnames.append(value) if len(dnsnames) > 1: raise CertificateError( "hostname %r " "doesn't match either of %s" % (hostname, ", ".join(map(repr, dnsnames))) ) elif len(dnsnames) == 1: raise CertificateError("hostname %r doesn't match %r" % (hostname, dnsnames[0])) else: raise CertificateError( "no appropriate commonName or subjectAltName fields were found" ) ��packages/ssl_match_hostname/__pycache__/__init__.cpython-310.pyc��0000644��00000001046�15027623470�0020654 0��ustar�00��o ��~�`��@��s��d�dl�Z�ze�jdk�se�jdkred��d�dlmZmZ�W�dZdS��eyL��z d�dlmZmZ�W�n�eyA��ddlmZmZ�Y�nw�Y�dZdS�Y�dZdS�w�)��N)��)r�� zFallback to vendored code)�CertificateError�match_hostname��) �sys�version_info�ImportError�sslr��r��backports.ssl_match_hostname�_implementation�__all__��r��r��N/usr/lib/python3/dist-packages/urllib3/packages/ssl_match_hostname/__init__.py�<module>��s"�� packages/ssl_match_hostname/__pycache__/_implementation.cpython-310.pyc��0000644��00000006265�15027623470�0022311 0��ustar�00��o ��~�`/��@��sr��d�Z�ddlZddlZzddlZW�n�ey��dZY�nw�dZG�dd��de�Zddd�Zd d ��Z dd��Z d d��ZdS�)zJThe match_hostname() function from Python 3.3.3, essential when using SSL.��Nz3.5.0.1c��@��s��e�Zd�ZdS�)�CertificateErrorN)�__name__� __module__�__qualname__��r��r��U/usr/lib/python3/dist-packages/urllib3/packages/ssl_match_hostname/_implementation.pyr��s��r��c�� C��s��g�}\|�sdS�\|��d�}\|d�}\|dd��}\|�d�}\|\|kr&tdt\|��\|s0\|��\|��kS�\|dkr:\|�d��n\|�d �sD\|�d �rM\|�t�\|��n\|�t�\|�� d d��\|D�] }\|�t�\|��q[t� dd �\|��d�tj�} \| � \|�S�)zhMatching according to RFC 6125, section 6.4.3 http://tools.ietf.org/html/rfc6125#section-6.4.3 F�.r��r��N�z,too many wildcards in certificate DNS name: z[^.]+zxn--z\z[^.]z\Az\.z\Z)�split�countr��repr�lower�append� startswith�re�escape�replace�compile�join� IGNORECASE�match) �dn�hostname� max_wildcards�pats�parts�leftmost� remainder� wildcards�frag�patr��r��r��_dnsname_match��s,�� r"��c��C��s&��t�\|�t�rtjdk�rt\|�ddd�}�\|�S�)N)��ascii�strict)�encoding�errors)� isinstance�str�sys�version_info�unicode)�objr��r��r��_to_unicodeO��s��r.��c��C��s��t��t\|��}\|\|kS�)z�Exact matching of IP addresses. RFC 6125 explicitly doesn't define an algorithm for this (section 1.7.2 - "Out of Scope"). )� ipaddress� ip_addressr.��rstrip)�ipname�host_ip�ipr��r��r��_ipaddress_matchU��s��r5��c��C��sv��\|�st�d��z t�t\|��}W�n%�t�y��d}Y�n�ty$��d}Y�n�ty4��tdu�r1d}n��Y�nw�g�}\|��dd�}\|D�]/\}}\|dkrY\|du�rSt\|\|�rS�dS�\|�\|��q?\|dkrn\|durit \|\|�ri�dS�\|�\|��q?\|s�\|��dd�D�]}\|D�]\}}\|dkr�t\|\|�r��dS�\|�\|��q{qwt \|�d kr�td \|d�t t\|��f��t \|�d kr�td\|\|d �f��td��)a)��Verify that cert* (in decoded format as returned by SSLSocket.getpeercert()) matches the hostname. RFC 2818 and RFC 6125 rules are followed, but IP addresses are not accepted for hostname. CertificateError is raised on failure. On success, the function returns nothing. ztempty or no certificate, match_hostname needs a SSL socket or SSL context with either CERT_OPTIONAL or CERT_REQUIREDN�subjectAltNamer��DNSz IP Address�subject� commonNamer��z&hostname %r doesn't match either of %sz, zhostname %r doesn't match %rr��z=no appropriate commonName or subjectAltName fields were found)� ValueErrorr/��r0��r.��UnicodeError�AttributeError�getr"��r��r5��lenr��r��mapr ��)�certr��r3��dnsnames�san�key�value�subr��r��r��match_hostnamea��s`�� rF��)r��)�__doc__r��r��r/��ImportError�__version__r:��r��r"��r.��r5��rF��r��r��r��r��<module>��s�� 6��packages/ssl_match_hostname/__init__.py��0000644��00000001637�15027623470�0014323 0��ustar�00��import sys try: # Our match_hostname function is the same as 3.10's, so we only want to # import the match_hostname function if it's at least that good. # We also fallback on Python 3.10+ because our code doesn't emit # deprecation warnings and is the same as Python 3.10 otherwise. if sys.version_info < (3, 5) or sys.version_info >= (3, 10): raise ImportError("Fallback to vendored code") from ssl import CertificateError, match_hostname except ImportError: try: # Backport of the function from a pypi module from backports.ssl_match_hostname import ( # type: ignore CertificateError, match_hostname, ) except ImportError: # Our vendored copy from ._implementation import CertificateError, match_hostname # type: ignore # Not needed, but documenting what we provide. __all__ = ("CertificateError", "match_hostname") ��packages/__init__.py��0000644��00000000454�15027623470�0010444 0��ustar�00��from __future__ import absolute_import __all__ = ("ssl_match_hostname",) try: # cPython >= 2.7.9 has ssl features backported from Python3 from ssl import CertificateError del CertificateError import ssl as ssl_match_hostname except ImportError: from . import ssl_match_hostname ��_collections.py��0000644��00000026123�15027623470�0007605 0��ustar�00��from __future__ import absolute_import try: from collections.abc import Mapping, MutableMapping except ImportError: from collections import Mapping, MutableMapping try: from threading import RLock except ImportError: # Platform-specific: No threads available class RLock: def __enter__(self): pass def __exit__(self, exc_type, exc_value, traceback): pass from collections import OrderedDict from .exceptions import InvalidHeader import six from six import iterkeys, itervalues __all__ = ["RecentlyUsedContainer", "HTTPHeaderDict"] _Null = object() class RecentlyUsedContainer(MutableMapping): """ Provides a thread-safe dict-like container which maintains up to ``maxsize`` keys while throwing away the least-recently-used keys beyond ``maxsize``. :param maxsize: Maximum number of recent elements to retain. :param dispose_func: Every time an item is evicted from the container, ``dispose_func(value)`` is called. Callback which will get called """ ContainerCls = OrderedDict def __init__(self, maxsize=10, dispose_func=None): self._maxsize = maxsize self.dispose_func = dispose_func self._container = self.ContainerCls() self.lock = RLock() def __getitem__(self, key): # Re-insert the item, moving it to the end of the eviction line. with self.lock: item = self._container.pop(key) self._container[key] = item return item def __setitem__(self, key, value): evicted_value = _Null with self.lock: # Possibly evict the existing value of 'key' evicted_value = self._container.get(key, _Null) self._container[key] = value # If we didn't evict an existing value, we might have to evict the # least recently used item from the beginning of the container. if len(self._container) > self._maxsize: _key, evicted_value = self._container.popitem(last=False) if self.dispose_func and evicted_value is not _Null: self.dispose_func(evicted_value) def __delitem__(self, key): with self.lock: value = self._container.pop(key) if self.dispose_func: self.dispose_func(value) def __len__(self): with self.lock: return len(self._container) def __iter__(self): raise NotImplementedError( "Iteration over this class is unlikely to be threadsafe." ) def clear(self): with self.lock: # Copy pointers to all values, then wipe the mapping values = list(itervalues(self._container)) self._container.clear() if self.dispose_func: for value in values: self.dispose_func(value) def keys(self): with self.lock: return list(iterkeys(self._container)) class HTTPHeaderDict(MutableMapping): """ :param headers: An iterable of field-value pairs. Must not contain multiple field names when compared case-insensitively. :param kwargs: Additional field-value pairs to pass in to ``dict.update``. A ``dict`` like container for storing HTTP Headers. Field names are stored and compared case-insensitively in compliance with RFC 7230. Iteration provides the first case-sensitive key seen for each case-insensitive pair. Using ``__setitem__`` syntax overwrites fields that compare equal case-insensitively in order to maintain ``dict``'s api. For fields that compare equal, instead create a new ``HTTPHeaderDict`` and use ``.add`` in a loop. If multiple fields that are equal case-insensitively are passed to the constructor or ``.update``, the behavior is undefined and some will be lost. >>> headers = HTTPHeaderDict() >>> headers.add('Set-Cookie', 'foo=bar') >>> headers.add('set-cookie', 'baz=quxx') >>> headers['content-length'] = '7' >>> headers['SET-cookie'] 'foo=bar, baz=quxx' >>> headers['Content-Length'] '7' """ def __init__(self, headers=None, kwargs): super(HTTPHeaderDict, self).__init__() self._container = OrderedDict() if headers is not None: if isinstance(headers, HTTPHeaderDict): self._copy_from(headers) else: self.extend(headers) if kwargs: self.extend(kwargs) def __setitem__(self, key, val): self._container[key.lower()] = [key, val] return self._container[key.lower()] def __getitem__(self, key): val = self._container[key.lower()] return ", ".join(val[1:]) def __delitem__(self, key): del self._container[key.lower()] def __contains__(self, key): return key.lower() in self._container def __eq__(self, other): if not isinstance(other, Mapping) and not hasattr(other, "keys"): return False if not isinstance(other, type(self)): other = type(self)(other) return dict((k.lower(), v) for k, v in self.itermerged()) == dict( (k.lower(), v) for k, v in other.itermerged() ) def __ne__(self, other): return not self.__eq__(other) if six.PY2: # Python 2 iterkeys = MutableMapping.iterkeys itervalues = MutableMapping.itervalues __marker = object() def __len__(self): return len(self._container) def __iter__(self): # Only provide the originally cased names for vals in self._container.values(): yield vals[0] def pop(self, key, default=__marker): """D.pop(k[,d]) -> v, remove specified key and return the corresponding value. If key is not found, d is returned if given, otherwise KeyError is raised. """ # Using the MutableMapping function directly fails due to the private marker. # Using ordinary dict.pop would expose the internal structures. # So let's reinvent the wheel. try: value = self[key] except KeyError: if default is self.__marker: raise return default else: del self[key] return value def discard(self, key): try: del self[key] except KeyError: pass def add(self, key, val): """Adds a (name, value) pair, doesn't overwrite the value if it already exists. >>> headers = HTTPHeaderDict(foo='bar') >>> headers.add('Foo', 'baz') >>> headers['foo'] 'bar, baz' """ key_lower = key.lower() new_vals = [key, val] # Keep the common case aka no item present as fast as possible vals = self._container.setdefault(key_lower, new_vals) if new_vals is not vals: vals.append(val) def extend(self, args, kwargs): """Generic import function for any type of header-like object. Adapted version of MutableMapping.update in order to insert items with self.add instead of self.__setitem__ """ if len(args) > 1: raise TypeError( "extend() takes at most 1 positional " "arguments ({0} given)".format(len(args)) ) other = args[0] if len(args) >= 1 else () if isinstance(other, HTTPHeaderDict): for key, val in other.iteritems(): self.add(key, val) elif isinstance(other, Mapping): for key in other: self.add(key, other[key]) elif hasattr(other, "keys"): for key in other.keys(): self.add(key, other[key]) else: for key, value in other: self.add(key, value) for key, value in kwargs.items(): self.add(key, value) def getlist(self, key, default=__marker): """Returns a list of all the values for the named field. Returns an empty list if the key doesn't exist.""" try: vals = self._container[key.lower()] except KeyError: if default is self.__marker: return [] return default else: return vals[1:] def _prepare_for_method_change(self): """ Remove content-specific header fields before changing the request method to GET or HEAD according to RFC 9110, Section 15.4. """ content_specific_headers = [ "Content-Encoding", "Content-Language", "Content-Location", "Content-Type", "Content-Length", "Digest", "Last-Modified", ] for header in content_specific_headers: self.discard(header) return self # Backwards compatibility for httplib getheaders = getlist getallmatchingheaders = getlist iget = getlist # Backwards compatibility for http.cookiejar get_all = getlist def __repr__(self): return "%s(%s)" % (type(self).__name__, dict(self.itermerged())) def _copy_from(self, other): for key in other: val = other.getlist(key) if isinstance(val, list): # Don't need to convert tuples val = list(val) self._container[key.lower()] = [key] + val def copy(self): clone = type(self)() clone._copy_from(self) return clone def iteritems(self): """Iterate over all header lines, including duplicate ones.""" for key in self: vals = self._container[key.lower()] for val in vals[1:]: yield vals[0], val def itermerged(self): """Iterate over all headers, merging duplicate ones together.""" for key in self: val = self._container[key.lower()] yield val[0], ", ".join(val[1:]) def items(self): return list(self.iteritems()) @classmethod def from_httplib(cls, message): # Python 2 """Read headers from a Python 2 httplib message object.""" # python2.7 does not expose a proper API for exporting multiheaders # efficiently. This function re-reads raw lines from the message # object and extracts the multiheaders properly. obs_fold_continued_leaders = (" ", "\t") headers = [] for line in message.headers: if line.startswith(obs_fold_continued_leaders): if not headers: # We received a header line that starts with OWS as described # in RFC-7230 S3.2.4. This indicates a multiline header, but # there exists no previous header to which we can attach it. raise InvalidHeader( "Header continuation with no previous header: %s" % line ) else: key, value = headers[-1] headers[-1] = (key, value + " " + line.strip()) continue key, value = line.split(":", 1) headers.append((key, value.strip())) return cls(headers) ��poolmanager.py��0000644��00000050701�15027623470�0007433 0��ustar�00��from __future__ import absolute_import import collections import functools import logging from ._collections import HTTPHeaderDict, RecentlyUsedContainer from .connectionpool import HTTPConnectionPool, HTTPSConnectionPool, port_by_scheme from .exceptions import ( LocationValueError, MaxRetryError, ProxySchemeUnknown, ProxySchemeUnsupported, URLSchemeUnknown, ) import six from six.moves.urllib.parse import urljoin from .request import RequestMethods from .util.proxy import connection_requires_http_tunnel from .util.retry import Retry from .util.url import parse_url __all__ = ["PoolManager", "ProxyManager", "proxy_from_url"] log = logging.getLogger(__name__) SSL_KEYWORDS = ( "key_file", "cert_file", "cert_reqs", "ca_certs", "ssl_version", "ca_cert_dir", "ssl_context", "key_password", ) # All known keyword arguments that could be provided to the pool manager, its # pools, or the underlying connections. This is used to construct a pool key. _key_fields = ( "key_scheme", # str "key_host", # str "key_port", # int "key_timeout", # int or float or Timeout "key_retries", # int or Retry "key_strict", # bool "key_block", # bool "key_source_address", # str "key_key_file", # str "key_key_password", # str "key_cert_file", # str "key_cert_reqs", # str "key_ca_certs", # str "key_ssl_version", # str "key_ca_cert_dir", # str "key_ssl_context", # instance of ssl.SSLContext or urllib3.util.ssl_.SSLContext "key_maxsize", # int "key_headers", # dict "key__proxy", # parsed proxy url "key__proxy_headers", # dict "key__proxy_config", # class "key_socket_options", # list of (level (int), optname (int), value (int or str)) tuples "key__socks_options", # dict "key_assert_hostname", # bool or string "key_assert_fingerprint", # str "key_server_hostname", # str ) #: The namedtuple class used to construct keys for the connection pool. #: All custom key schemes should include the fields in this key at a minimum. PoolKey = collections.namedtuple("PoolKey", _key_fields) _proxy_config_fields = ("ssl_context", "use_forwarding_for_https") ProxyConfig = collections.namedtuple("ProxyConfig", _proxy_config_fields) def _default_key_normalizer(key_class, request_context): """ Create a pool key out of a request context dictionary. According to RFC 3986, both the scheme and host are case-insensitive. Therefore, this function normalizes both before constructing the pool key for an HTTPS request. If you wish to change this behaviour, provide alternate callables to ``key_fn_by_scheme``. :param key_class: The class to use when constructing the key. This should be a namedtuple with the ``scheme`` and ``host`` keys at a minimum. :type key_class: namedtuple :param request_context: A dictionary-like object that contain the context for a request. :type request_context: dict :return: A namedtuple that can be used as a connection pool key. :rtype: PoolKey """ # Since we mutate the dictionary, make a copy first context = request_context.copy() context["scheme"] = context["scheme"].lower() context["host"] = context["host"].lower() # These are both dictionaries and need to be transformed into frozensets for key in ("headers", "_proxy_headers", "_socks_options"): if key in context and context[key] is not None: context[key] = frozenset(context[key].items()) # The socket_options key may be a list and needs to be transformed into a # tuple. socket_opts = context.get("socket_options") if socket_opts is not None: context["socket_options"] = tuple(socket_opts) # Map the kwargs to the names in the namedtuple - this is necessary since # namedtuples can't have fields starting with '_'. for key in list(context.keys()): context["key_" + key] = context.pop(key) # Default to ``None`` for keys missing from the context for field in key_class._fields: if field not in context: context[field] = None return key_class(context) #: A dictionary that maps a scheme to a callable that creates a pool key. #: This can be used to alter the way pool keys are constructed, if desired. #: Each PoolManager makes a copy of this dictionary so they can be configured #: globally here, or individually on the instance. key_fn_by_scheme = { "http": functools.partial(_default_key_normalizer, PoolKey), "https": functools.partial(_default_key_normalizer, PoolKey), } pool_classes_by_scheme = {"http": HTTPConnectionPool, "https": HTTPSConnectionPool} class PoolManager(RequestMethods): """ Allows for arbitrary requests while transparently keeping track of necessary connection pools for you. :param num_pools: Number of connection pools to cache before discarding the least recently used pool. :param headers: Headers to include with all requests, unless other headers are given explicitly. :param \\connection_pool_kw: Additional parameters are used to create fresh :class:`urllib3.connectionpool.ConnectionPool` instances. Example:: >>> manager = PoolManager(num_pools=2) >>> r = manager.request('GET', 'http://google.com/') >>> r = manager.request('GET', 'http://google.com/mail') >>> r = manager.request('GET', 'http://yahoo.com/') >>> len(manager.pools) 2 """ proxy = None proxy_config = None def __init__(self, num_pools=10, headers=None, connection_pool_kw): RequestMethods.__init__(self, headers) if "retries" in connection_pool_kw: retries = connection_pool_kw["retries"] if not isinstance(retries, Retry): # When Retry is initialized, raise_on_redirect is based # on a redirect boolean value. # But requests made via a pool manager always set # redirect to False, and raise_on_redirect always ends # up being False consequently. # Here we fix the issue by setting raise_on_redirect to # a value needed by the pool manager without considering # the redirect boolean. raise_on_redirect = retries is not False retries = Retry.from_int(retries, redirect=False) retries.raise_on_redirect = raise_on_redirect connection_pool_kw = connection_pool_kw.copy() connection_pool_kw["retries"] = retries self.connection_pool_kw = connection_pool_kw self.pools = RecentlyUsedContainer(num_pools, dispose_func=lambda p: p.close()) # Locally set the pool classes and keys so other PoolManagers can # override them. self.pool_classes_by_scheme = pool_classes_by_scheme self.key_fn_by_scheme = key_fn_by_scheme.copy() def __enter__(self): return self def __exit__(self, exc_type, exc_val, exc_tb): self.clear() # Return False to re-raise any potential exceptions return False def _new_pool(self, scheme, host, port, request_context=None): """ Create a new :class:`urllib3.connectionpool.ConnectionPool` based on host, port, scheme, and any additional pool keyword arguments. If ``request_context`` is provided, it is provided as keyword arguments to the pool class used. This method is used to actually create the connection pools handed out by :meth:`connection_from_url` and companion methods. It is intended to be overridden for customization. """ pool_cls = self.pool_classes_by_scheme[scheme] if request_context is None: request_context = self.connection_pool_kw.copy() # Although the context has everything necessary to create the pool, # this function has historically only used the scheme, host, and port # in the positional args. When an API change is acceptable these can # be removed. for key in ("scheme", "host", "port"): request_context.pop(key, None) if scheme == "http": for kw in SSL_KEYWORDS: request_context.pop(kw, None) return pool_cls(host, port, request_context) def clear(self): """ Empty our store of pools and direct them all to close. This will not affect in-flight connections, but they will not be re-used after completion. """ self.pools.clear() def connection_from_host(self, host, port=None, scheme="http", pool_kwargs=None): """ Get a :class:`urllib3.connectionpool.ConnectionPool` based on the host, port, and scheme. If ``port`` isn't given, it will be derived from the ``scheme`` using ``urllib3.connectionpool.port_by_scheme``. If ``pool_kwargs`` is provided, it is merged with the instance's ``connection_pool_kw`` variable and used to create the new connection pool, if one is needed. """ if not host: raise LocationValueError("No host specified.") request_context = self._merge_pool_kwargs(pool_kwargs) request_context["scheme"] = scheme or "http" if not port: port = port_by_scheme.get(request_context["scheme"].lower(), 80) request_context["port"] = port request_context["host"] = host return self.connection_from_context(request_context) def connection_from_context(self, request_context): """ Get a :class:`urllib3.connectionpool.ConnectionPool` based on the request context. ``request_context`` must at least contain the ``scheme`` key and its value must be a key in ``key_fn_by_scheme`` instance variable. """ scheme = request_context["scheme"].lower() pool_key_constructor = self.key_fn_by_scheme.get(scheme) if not pool_key_constructor: raise URLSchemeUnknown(scheme) pool_key = pool_key_constructor(request_context) return self.connection_from_pool_key(pool_key, request_context=request_context) def connection_from_pool_key(self, pool_key, request_context=None): """ Get a :class:`urllib3.connectionpool.ConnectionPool` based on the provided pool key. ``pool_key`` should be a namedtuple that only contains immutable objects. At a minimum it must have the ``scheme``, ``host``, and ``port`` fields. """ with self.pools.lock: # If the scheme, host, or port doesn't match existing open # connections, open a new ConnectionPool. pool = self.pools.get(pool_key) if pool: return pool # Make a fresh ConnectionPool of the desired type scheme = request_context["scheme"] host = request_context["host"] port = request_context["port"] pool = self._new_pool(scheme, host, port, request_context=request_context) self.pools[pool_key] = pool return pool def connection_from_url(self, url, pool_kwargs=None): """ Similar to :func:`urllib3.connectionpool.connection_from_url`. If ``pool_kwargs`` is not provided and a new pool needs to be constructed, ``self.connection_pool_kw`` is used to initialize the :class:`urllib3.connectionpool.ConnectionPool`. If ``pool_kwargs`` is provided, it is used instead. Note that if a new pool does not need to be created for the request, the provided ``pool_kwargs`` are not used. """ u = parse_url(url) return self.connection_from_host( u.host, port=u.port, scheme=u.scheme, pool_kwargs=pool_kwargs ) def _merge_pool_kwargs(self, override): """ Merge a dictionary of override values for self.connection_pool_kw. This does not modify self.connection_pool_kw and returns a new dict. Any keys in the override dictionary with a value of ``None`` are removed from the merged dictionary. """ base_pool_kwargs = self.connection_pool_kw.copy() if override: for key, value in override.items(): if value is None: try: del base_pool_kwargs[key] except KeyError: pass else: base_pool_kwargs[key] = value return base_pool_kwargs def _proxy_requires_url_absolute_form(self, parsed_url): """ Indicates if the proxy requires the complete destination URL in the request. Normally this is only needed when not using an HTTP CONNECT tunnel. """ if self.proxy is None: return False return not connection_requires_http_tunnel( self.proxy, self.proxy_config, parsed_url.scheme ) def _validate_proxy_scheme_url_selection(self, url_scheme): """ Validates that were not attempting to do TLS in TLS connections on Python2 or with unsupported SSL implementations. """ if self.proxy is None or url_scheme != "https": return if self.proxy.scheme != "https": return if six.PY2 and not self.proxy_config.use_forwarding_for_https: raise ProxySchemeUnsupported( "Contacting HTTPS destinations through HTTPS proxies " "'via CONNECT tunnels' is not supported in Python 2" ) def urlopen(self, method, url, redirect=True, kw): """ Same as :meth:`urllib3.HTTPConnectionPool.urlopen` with custom cross-host redirect logic and only sends the request-uri portion of the ``url``. The given ``url`` parameter must be absolute, such that an appropriate :class:`urllib3.connectionpool.ConnectionPool` can be chosen for it. """ u = parse_url(url) self._validate_proxy_scheme_url_selection(u.scheme) conn = self.connection_from_host(u.host, port=u.port, scheme=u.scheme) kw["assert_same_host"] = False kw["redirect"] = False if "headers" not in kw: kw["headers"] = self.headers.copy() if self._proxy_requires_url_absolute_form(u): response = conn.urlopen(method, url, kw) else: response = conn.urlopen(method, u.request_uri, kw) redirect_location = redirect and response.get_redirect_location() if not redirect_location: return response # Support relative URLs for redirecting. redirect_location = urljoin(url, redirect_location) if response.status == 303: # Change the method according to RFC 9110, Section 15.4.4. method = "GET" # And lose the body not to transfer anything sensitive. kw["body"] = None kw["headers"] = HTTPHeaderDict(kw["headers"])._prepare_for_method_change() retries = kw.get("retries", response.retries) if not isinstance(retries, Retry): retries = Retry.from_int(retries, redirect=redirect) # Strip headers marked as unsafe to forward to the redirected location. # Check remove_headers_on_redirect to avoid a potential network call within # conn.is_same_host() which may use socket.gethostbyname() in the future. if retries.remove_headers_on_redirect and not conn.is_same_host( redirect_location ): headers = list(six.iterkeys(kw["headers"])) for header in headers: if header.lower() in retries.remove_headers_on_redirect: kw["headers"].pop(header, None) try: retries = retries.increment(method, url, response=response, _pool=conn) except MaxRetryError: if retries.raise_on_redirect: response.drain_conn() raise return response kw["retries"] = retries kw["redirect"] = redirect log.info("Redirecting %s -> %s", url, redirect_location) response.drain_conn() return self.urlopen(method, redirect_location, kw) class ProxyManager(PoolManager): """ Behaves just like :class:`PoolManager`, but sends all requests through the defined proxy, using the CONNECT method for HTTPS URLs. :param proxy_url: The URL of the proxy to be used. :param proxy_headers: A dictionary containing headers that will be sent to the proxy. In case of HTTP they are being sent with each request, while in the HTTPS/CONNECT case they are sent only once. Could be used for proxy authentication. :param proxy_ssl_context: The proxy SSL context is used to establish the TLS connection to the proxy when using HTTPS proxies. :param use_forwarding_for_https: (Defaults to False) If set to True will forward requests to the HTTPS proxy to be made on behalf of the client instead of creating a TLS tunnel via the CONNECT method. Enabling this flag means that request and response headers and content will be visible from the HTTPS proxy whereas tunneling keeps request and response headers and content private. IP address, target hostname, SNI, and port are always visible to an HTTPS proxy even when this flag is disabled. Example: >>> proxy = urllib3.ProxyManager('http://localhost:3128/') >>> r1 = proxy.request('GET', 'http://google.com/') >>> r2 = proxy.request('GET', 'http://httpbin.org/') >>> len(proxy.pools) 1 >>> r3 = proxy.request('GET', 'https://httpbin.org/') >>> r4 = proxy.request('GET', 'https://twitter.com/') >>> len(proxy.pools) 3 """ def __init__( self, proxy_url, num_pools=10, headers=None, proxy_headers=None, proxy_ssl_context=None, use_forwarding_for_https=False, connection_pool_kw ): if isinstance(proxy_url, HTTPConnectionPool): proxy_url = "%s://%s:%i" % ( proxy_url.scheme, proxy_url.host, proxy_url.port, ) proxy = parse_url(proxy_url) if proxy.scheme not in ("http", "https"): raise ProxySchemeUnknown(proxy.scheme) if not proxy.port: port = port_by_scheme.get(proxy.scheme, 80) proxy = proxy._replace(port=port) self.proxy = proxy self.proxy_headers = proxy_headers or {} self.proxy_ssl_context = proxy_ssl_context self.proxy_config = ProxyConfig(proxy_ssl_context, use_forwarding_for_https) connection_pool_kw["_proxy"] = self.proxy connection_pool_kw["_proxy_headers"] = self.proxy_headers connection_pool_kw["_proxy_config"] = self.proxy_config super(ProxyManager, self).__init__(num_pools, headers, *connection_pool_kw) def connection_from_host(self, host, port=None, scheme="http", pool_kwargs=None): if scheme == "https": return super(ProxyManager, self).connection_from_host( host, port, scheme, pool_kwargs=pool_kwargs ) return super(ProxyManager, self).connection_from_host( self.proxy.host, self.proxy.port, self.proxy.scheme, pool_kwargs=pool_kwargs ) def _set_proxy_headers(self, url, headers=None): """ Sets headers needed by proxies: specifically, the Accept and Host headers. Only sets headers not provided by the user. """ headers_ = {"Accept": "/"} netloc = parse_url(url).netloc if netloc: headers_["Host"] = netloc if headers: headers_.update(headers) return headers_ def urlopen(self, method, url, redirect=True, kw): "Same as HTTP(S)ConnectionPool.urlopen, ``url`` must be absolute." u = parse_url(url) if not connection_requires_http_tunnel(self.proxy, self.proxy_config, u.scheme): # For connections using HTTP CONNECT, httplib sets the necessary # headers on the CONNECT to the proxy. If we're not using CONNECT, # we'll definitely need to set 'Host' at the very least. headers = kw.get("headers", self.headers) kw["headers"] = self._set_proxy_headers(url, headers) return super(ProxyManager, self).urlopen(method, url, redirect=redirect, kw) def proxy_from_url(url, kw): return ProxyManager(proxy_url=url, kw) ��exceptions.py��0000644��00000020017�15027623470�0007305 0��ustar�00��from __future__ import absolute_import from six.moves.http_client import IncompleteRead as httplib_IncompleteRead # Base Exceptions class HTTPError(Exception): """Base exception used by this module.""" pass class HTTPWarning(Warning): """Base warning used by this module.""" pass class PoolError(HTTPError): """Base exception for errors caused within a pool.""" def __init__(self, pool, message): self.pool = pool HTTPError.__init__(self, "%s: %s" % (pool, message)) def __reduce__(self): # For pickling purposes. return self.__class__, (None, None) class RequestError(PoolError): """Base exception for PoolErrors that have associated URLs.""" def __init__(self, pool, url, message): self.url = url PoolError.__init__(self, pool, message) def __reduce__(self): # For pickling purposes. return self.__class__, (None, self.url, None) class SSLError(HTTPError): """Raised when SSL certificate fails in an HTTPS connection.""" pass class ProxyError(HTTPError): """Raised when the connection to a proxy fails.""" def __init__(self, message, error, args): super(ProxyError, self).__init__(message, error, args) self.original_error = error class DecodeError(HTTPError): """Raised when automatic decoding based on Content-Type fails.""" pass class ProtocolError(HTTPError): """Raised when something unexpected happens mid-request/response.""" pass #: Renamed to ProtocolError but aliased for backwards compatibility. ConnectionError = ProtocolError # Leaf Exceptions class MaxRetryError(RequestError): """Raised when the maximum number of retries is exceeded. :param pool: The connection pool :type pool: :class:`~urllib3.connectionpool.HTTPConnectionPool` :param string url: The requested Url :param exceptions.Exception reason: The underlying error """ def __init__(self, pool, url, reason=None): self.reason = reason message = "Max retries exceeded with url: %s (Caused by %r)" % (url, reason) RequestError.__init__(self, pool, url, message) class HostChangedError(RequestError): """Raised when an existing pool gets a request for a foreign host.""" def __init__(self, pool, url, retries=3): message = "Tried to open a foreign host with url: %s" % url RequestError.__init__(self, pool, url, message) self.retries = retries class TimeoutStateError(HTTPError): """Raised when passing an invalid state to a timeout""" pass class TimeoutError(HTTPError): """Raised when a socket timeout error occurs. Catching this error will catch both :exc:`ReadTimeoutErrors <ReadTimeoutError>` and :exc:`ConnectTimeoutErrors <ConnectTimeoutError>`. """ pass class ReadTimeoutError(TimeoutError, RequestError): """Raised when a socket timeout occurs while receiving data from a server""" pass # This timeout error does not have a URL attached and needs to inherit from the # base HTTPError class ConnectTimeoutError(TimeoutError): """Raised when a socket timeout occurs while connecting to a server""" pass class NewConnectionError(ConnectTimeoutError, PoolError): """Raised when we fail to establish a new connection. Usually ECONNREFUSED.""" pass class EmptyPoolError(PoolError): """Raised when a pool runs out of connections and no more are allowed.""" pass class ClosedPoolError(PoolError): """Raised when a request enters a pool after the pool has been closed.""" pass class LocationValueError(ValueError, HTTPError): """Raised when there is something wrong with a given URL input.""" pass class LocationParseError(LocationValueError): """Raised when get_host or similar fails to parse the URL input.""" def __init__(self, location): message = "Failed to parse: %s" % location HTTPError.__init__(self, message) self.location = location class URLSchemeUnknown(LocationValueError): """Raised when a URL input has an unsupported scheme.""" def __init__(self, scheme): message = "Not supported URL scheme %s" % scheme super(URLSchemeUnknown, self).__init__(message) self.scheme = scheme class ResponseError(HTTPError): """Used as a container for an error reason supplied in a MaxRetryError.""" GENERIC_ERROR = "too many error responses" SPECIFIC_ERROR = "too many {status_code} error responses" class SecurityWarning(HTTPWarning): """Warned when performing security reducing actions""" pass class SubjectAltNameWarning(SecurityWarning): """Warned when connecting to a host with a certificate missing a SAN.""" pass class InsecureRequestWarning(SecurityWarning): """Warned when making an unverified HTTPS request.""" pass class SystemTimeWarning(SecurityWarning): """Warned when system time is suspected to be wrong""" pass class InsecurePlatformWarning(SecurityWarning): """Warned when certain TLS/SSL configuration is not available on a platform.""" pass class SNIMissingWarning(HTTPWarning): """Warned when making a HTTPS request without SNI available.""" pass class DependencyWarning(HTTPWarning): """ Warned when an attempt is made to import a module with missing optional dependencies. """ pass class ResponseNotChunked(ProtocolError, ValueError): """Response needs to be chunked in order to read it as chunks.""" pass class BodyNotHttplibCompatible(HTTPError): """ Body should be :class:`http.client.HTTPResponse` like (have an fp attribute which returns raw chunks) for read_chunked(). """ pass class IncompleteRead(HTTPError, httplib_IncompleteRead): """ Response length doesn't match expected Content-Length Subclass of :class:`http.client.IncompleteRead` to allow int value for ``partial`` to avoid creating large objects on streamed reads. """ def __init__(self, partial, expected): super(IncompleteRead, self).__init__(partial, expected) def __repr__(self): return "IncompleteRead(%i bytes read, %i more expected)" % ( self.partial, self.expected, ) class InvalidChunkLength(HTTPError, httplib_IncompleteRead): """Invalid chunk length in a chunked response.""" def __init__(self, response, length): super(InvalidChunkLength, self).__init__( response.tell(), response.length_remaining ) self.response = response self.length = length def __repr__(self): return "InvalidChunkLength(got length %r, %i bytes read)" % ( self.length, self.partial, ) class InvalidHeader(HTTPError): """The header provided was somehow invalid.""" pass class ProxySchemeUnknown(AssertionError, URLSchemeUnknown): """ProxyManager does not support the supplied scheme""" # TODO(t-8ch): Stop inheriting from AssertionError in v2.0. def __init__(self, scheme): # 'localhost' is here because our URL parser parses # localhost:8080 -> scheme=localhost, remove if we fix this. if scheme == "localhost": scheme = None if scheme is None: message = "Proxy URL had no scheme, should start with http:// or https://" else: message = ( "Proxy URL had unsupported scheme %s, should use http:// or https://" % scheme ) super(ProxySchemeUnknown, self).__init__(message) class ProxySchemeUnsupported(ValueError): """Fetching HTTPS resources through HTTPS proxies is unsupported""" pass class HeaderParsingError(HTTPError): """Raised by assert_header_parsing, but we convert it to a log.warning statement.""" def __init__(self, defects, unparsed_data): message = "%s, unparsed data: %r" % (defects or "Unknown", unparsed_data) super(HeaderParsingError, self).__init__(message) class UnrewindableBodyError(HTTPError): """urllib3 encountered an error when trying to rewind a body""" pass ��connectionpool.py��0000644��00000111206�15027623470�0010156 0��ustar�00��from __future__ import absolute_import import errno import logging import socket import sys import warnings from socket import error as SocketError from socket import timeout as SocketTimeout from ._collections import HTTPHeaderDict from .connection import ( BaseSSLError, BrokenPipeError, DummyConnection, HTTPConnection, HTTPException, HTTPSConnection, VerifiedHTTPSConnection, port_by_scheme, ) from .exceptions import ( ClosedPoolError, EmptyPoolError, HeaderParsingError, HostChangedError, InsecureRequestWarning, LocationValueError, MaxRetryError, NewConnectionError, ProtocolError, ProxyError, ReadTimeoutError, SSLError, TimeoutError, ) import six from six.moves import queue from .packages.ssl_match_hostname import CertificateError from .request import RequestMethods from .response import HTTPResponse from .util.connection import is_connection_dropped from .util.proxy import connection_requires_http_tunnel from .util.queue import LifoQueue from .util.request import set_file_position from .util.response import assert_header_parsing from .util.retry import Retry from .util.timeout import Timeout from .util.url import Url, _encode_target from .util.url import _normalize_host as normalize_host from .util.url import get_host, parse_url xrange = six.moves.xrange log = logging.getLogger(__name__) _Default = object() # Pool objects class ConnectionPool(object): """ Base class for all connection pools, such as :class:`.HTTPConnectionPool` and :class:`.HTTPSConnectionPool`. .. note:: ConnectionPool.urlopen() does not normalize or percent-encode target URIs which is useful if your target server doesn't support percent-encoded target URIs. """ scheme = None QueueCls = LifoQueue def __init__(self, host, port=None): if not host: raise LocationValueError("No host specified.") self.host = _normalize_host(host, scheme=self.scheme) self._proxy_host = host.lower() self.port = port def __str__(self): return "%s(host=%r, port=%r)" % (type(self).__name__, self.host, self.port) def __enter__(self): return self def __exit__(self, exc_type, exc_val, exc_tb): self.close() # Return False to re-raise any potential exceptions return False def close(self): """ Close all pooled connections and disable the pool. """ pass # This is taken from http://hg.python.org/cpython/file/7aaba721ebc0/Lib/socket.py#l252 _blocking_errnos = {errno.EAGAIN, errno.EWOULDBLOCK} class HTTPConnectionPool(ConnectionPool, RequestMethods): """ Thread-safe connection pool for one host. :param host: Host used for this HTTP Connection (e.g. "localhost"), passed into :class:`http.client.HTTPConnection`. :param port: Port used for this HTTP Connection (None is equivalent to 80), passed into :class:`http.client.HTTPConnection`. :param strict: Causes BadStatusLine to be raised if the status line can't be parsed as a valid HTTP/1.0 or 1.1 status line, passed into :class:`http.client.HTTPConnection`. .. note:: Only works in Python 2. This parameter is ignored in Python 3. :param timeout: Socket timeout in seconds for each individual connection. This can be a float or integer, which sets the timeout for the HTTP request, or an instance of :class:`urllib3.util.Timeout` which gives you more fine-grained control over request timeouts. After the constructor has been parsed, this is always a `urllib3.util.Timeout` object. :param maxsize: Number of connections to save that can be reused. More than 1 is useful in multithreaded situations. If ``block`` is set to False, more connections will be created but they will not be saved once they've been used. :param block: If set to True, no more than ``maxsize`` connections will be used at a time. When no free connections are available, the call will block until a connection has been released. This is a useful side effect for particular multithreaded situations where one does not want to use more than maxsize connections per host to prevent flooding. :param headers: Headers to include with all requests, unless other headers are given explicitly. :param retries: Retry configuration to use by default with requests in this pool. :param _proxy: Parsed proxy URL, should not be used directly, instead, see :class:`urllib3.ProxyManager` :param _proxy_headers: A dictionary with proxy headers, should not be used directly, instead, see :class:`urllib3.ProxyManager` :param \\conn_kw: Additional parameters are used to create fresh :class:`urllib3.connection.HTTPConnection`, :class:`urllib3.connection.HTTPSConnection` instances. """ scheme = "http" ConnectionCls = HTTPConnection ResponseCls = HTTPResponse def __init__( self, host, port=None, strict=False, timeout=Timeout.DEFAULT_TIMEOUT, maxsize=1, block=False, headers=None, retries=None, _proxy=None, _proxy_headers=None, _proxy_config=None, conn_kw ): ConnectionPool.__init__(self, host, port) RequestMethods.__init__(self, headers) self.strict = strict if not isinstance(timeout, Timeout): timeout = Timeout.from_float(timeout) if retries is None: retries = Retry.DEFAULT self.timeout = timeout self.retries = retries self.pool = self.QueueCls(maxsize) self.block = block self.proxy = _proxy self.proxy_headers = _proxy_headers or {} self.proxy_config = _proxy_config # Fill the queue up so that doing get() on it will block properly for _ in xrange(maxsize): self.pool.put(None) # These are mostly for testing and debugging purposes. self.num_connections = 0 self.num_requests = 0 self.conn_kw = conn_kw if self.proxy: # Enable Nagle's algorithm for proxies, to avoid packet fragmentation. # We cannot know if the user has added default socket options, so we cannot replace the # list. self.conn_kw.setdefault("socket_options", []) self.conn_kw["proxy"] = self.proxy self.conn_kw["proxy_config"] = self.proxy_config def _new_conn(self): """ Return a fresh :class:`HTTPConnection`. """ self.num_connections += 1 log.debug( "Starting new HTTP connection (%d): %s:%s", self.num_connections, self.host, self.port or "80", ) conn = self.ConnectionCls( host=self.host, port=self.port, timeout=self.timeout.connect_timeout, strict=self.strict, self.conn_kw ) return conn def _get_conn(self, timeout=None): """ Get a connection. Will return a pooled connection if one is available. If no connections are available and :prop:`.block` is ``False``, then a fresh connection is returned. :param timeout: Seconds to wait before giving up and raising :class:`urllib3.exceptions.EmptyPoolError` if the pool is empty and :prop:`.block` is ``True``. """ conn = None try: conn = self.pool.get(block=self.block, timeout=timeout) except AttributeError: # self.pool is None raise ClosedPoolError(self, "Pool is closed.") except queue.Empty: if self.block: raise EmptyPoolError( self, "Pool reached maximum size and no more connections are allowed.", ) pass # Oh well, we'll create a new connection then # If this is a persistent connection, check if it got disconnected if conn and is_connection_dropped(conn): log.debug("Resetting dropped connection: %s", self.host) conn.close() if getattr(conn, "auto_open", 1) == 0: # This is a proxied connection that has been mutated by # http.client._tunnel() and cannot be reused (since it would # attempt to bypass the proxy) conn = None return conn or self._new_conn() def _put_conn(self, conn): """ Put a connection back into the pool. :param conn: Connection object for the current host and port as returned by :meth:`._new_conn` or :meth:`._get_conn`. If the pool is already full, the connection is closed and discarded because we exceeded maxsize. If connections are discarded frequently, then maxsize should be increased. If the pool is closed, then the connection will be closed and discarded. """ try: self.pool.put(conn, block=False) return # Everything is dandy, done. except AttributeError: # self.pool is None. pass except queue.Full: # This should never happen if self.block == True log.warning("Connection pool is full, discarding connection: %s", self.host) # Connection never got put back into the pool, close it. if conn: conn.close() def _validate_conn(self, conn): """ Called right before a request is made, after the socket is created. """ pass def _prepare_proxy(self, conn): # Nothing to do for HTTP connections. pass def _get_timeout(self, timeout): """Helper that always returns a :class:`urllib3.util.Timeout`""" if timeout is _Default: return self.timeout.clone() if isinstance(timeout, Timeout): return timeout.clone() else: # User passed us an int/float. This is for backwards compatibility, # can be removed later return Timeout.from_float(timeout) def _raise_timeout(self, err, url, timeout_value): """Is the error actually a timeout? Will raise a ReadTimeout or pass""" if isinstance(err, SocketTimeout): raise ReadTimeoutError( self, url, "Read timed out. (read timeout=%s)" % timeout_value ) # See the above comment about EAGAIN in Python 3. In Python 2 we have # to specifically catch it and throw the timeout error if hasattr(err, "errno") and err.errno in _blocking_errnos: raise ReadTimeoutError( self, url, "Read timed out. (read timeout=%s)" % timeout_value ) # Catch possible read timeouts thrown as SSL errors. If not the # case, rethrow the original. We need to do this because of: # http://bugs.python.org/issue10272 if "timed out" in str(err) or "did not complete (read)" in str( err ): # Python < 2.7.4 raise ReadTimeoutError( self, url, "Read timed out. (read timeout=%s)" % timeout_value ) def _make_request( self, conn, method, url, timeout=_Default, chunked=False, httplib_request_kw ): """ Perform a request on a given urllib connection object taken from our pool. :param conn: a connection from one of our connection pools :param timeout: Socket timeout in seconds for the request. This can be a float or integer, which will set the same timeout value for the socket connect and the socket read, or an instance of :class:`urllib3.util.Timeout`, which gives you more fine-grained control over your timeouts. """ self.num_requests += 1 timeout_obj = self._get_timeout(timeout) timeout_obj.start_connect() conn.timeout = timeout_obj.connect_timeout # Trigger any extra validation we need to do. try: self._validate_conn(conn) except (SocketTimeout, BaseSSLError) as e: # Py2 raises this as a BaseSSLError, Py3 raises it as socket timeout. self._raise_timeout(err=e, url=url, timeout_value=conn.timeout) raise # conn.request() calls http.client..request, not the method in # urllib3.request. It also calls makefile (recv) on the socket. try: if chunked: conn.request_chunked(method, url, httplib_request_kw) else: conn.request(method, url, httplib_request_kw) # We are swallowing BrokenPipeError (errno.EPIPE) since the server is # legitimately able to close the connection after sending a valid response. # With this behaviour, the received response is still readable. except BrokenPipeError: # Python 3 pass except IOError as e: # Python 2 and macOS/Linux # EPIPE and ESHUTDOWN are BrokenPipeError on Python 2, and EPROTOTYPE is needed on macOS # https://erickt.github.io/blog/2014/11/19/adventures-in-debugging-a-potential-osx-kernel-bug/ if e.errno not in { errno.EPIPE, errno.ESHUTDOWN, errno.EPROTOTYPE, }: raise # Reset the timeout for the recv() on the socket read_timeout = timeout_obj.read_timeout # App Engine doesn't have a sock attr if getattr(conn, "sock", None): # In Python 3 socket.py will catch EAGAIN and return None when you # try and read into the file pointer created by http.client, which # instead raises a BadStatusLine exception. Instead of catching # the exception and assuming all BadStatusLine exceptions are read # timeouts, check for a zero timeout before making the request. if read_timeout == 0: raise ReadTimeoutError( self, url, "Read timed out. (read timeout=%s)" % read_timeout ) if read_timeout is Timeout.DEFAULT_TIMEOUT: conn.sock.settimeout(socket.getdefaulttimeout()) else: # None or a value conn.sock.settimeout(read_timeout) # Receive the response from the server try: try: # Python 2.7, use buffering of HTTP responses httplib_response = conn.getresponse(buffering=True) except TypeError: # Python 3 try: httplib_response = conn.getresponse() except BaseException as e: # Remove the TypeError from the exception chain in # Python 3 (including for exceptions like SystemExit). # Otherwise it looks like a bug in the code. six.raise_from(e, None) except (SocketTimeout, BaseSSLError, SocketError) as e: self._raise_timeout(err=e, url=url, timeout_value=read_timeout) raise # AppEngine doesn't have a version attr. http_version = getattr(conn, "_http_vsn_str", "HTTP/?") log.debug( '%s://%s:%s "%s %s %s" %s %s', self.scheme, self.host, self.port, method, url, http_version, httplib_response.status, httplib_response.length, ) try: assert_header_parsing(httplib_response.msg) except (HeaderParsingError, TypeError) as hpe: # Platform-specific: Python 3 log.warning( "Failed to parse headers (url=%s): %s", self._absolute_url(url), hpe, exc_info=True, ) return httplib_response def _absolute_url(self, path): return Url(scheme=self.scheme, host=self.host, port=self.port, path=path).url def close(self): """ Close all pooled connections and disable the pool. """ if self.pool is None: return # Disable access to the pool old_pool, self.pool = self.pool, None try: while True: conn = old_pool.get(block=False) if conn: conn.close() except queue.Empty: pass # Done. def is_same_host(self, url): """ Check if the given ``url`` is a member of the same host as this connection pool. """ if url.startswith("/"): return True # TODO: Add optional support for socket.gethostbyname checking. scheme, host, port = get_host(url) if host is not None: host = _normalize_host(host, scheme=scheme) # Use explicit default port for comparison when none is given if self.port and not port: port = port_by_scheme.get(scheme) elif not self.port and port == port_by_scheme.get(scheme): port = None return (scheme, host, port) == (self.scheme, self.host, self.port) def urlopen( self, method, url, body=None, headers=None, retries=None, redirect=True, assert_same_host=True, timeout=_Default, pool_timeout=None, release_conn=None, chunked=False, body_pos=None, response_kw ): """ Get a connection from the pool and perform an HTTP request. This is the lowest level call for making a request, so you'll need to specify all the raw details. .. note:: More commonly, it's appropriate to use a convenience method provided by :class:`.RequestMethods`, such as :meth:`request`. .. note:: `release_conn` will only behave as expected if `preload_content=False` because we want to make `preload_content=False` the default behaviour someday soon without breaking backwards compatibility. :param method: HTTP request method (such as GET, POST, PUT, etc.) :param url: The URL to perform the request on. :param body: Data to send in the request body, either :class:`str`, :class:`bytes`, an iterable of :class:`str`/:class:`bytes`, or a file-like object. :param headers: Dictionary of custom headers to send, such as User-Agent, If-None-Match, etc. If None, pool headers are used. If provided, these headers completely replace any pool-specific headers. :param retries: Configure the number of retries to allow before raising a :class:`~urllib3.exceptions.MaxRetryError` exception. Pass ``None`` to retry until you receive a response. Pass a :class:`~urllib3.util.retry.Retry` object for fine-grained control over different types of retries. Pass an integer number to retry connection errors that many times, but no other types of errors. Pass zero to never retry. If ``False``, then retries are disabled and any exception is raised immediately. Also, instead of raising a MaxRetryError on redirects, the redirect response will be returned. :type retries: :class:`~urllib3.util.retry.Retry`, False, or an int. :param redirect: If True, automatically handle redirects (status codes 301, 302, 303, 307, 308). Each redirect counts as a retry. Disabling retries will disable redirect, too. :param assert_same_host: If ``True``, will make sure that the host of the pool requests is consistent else will raise HostChangedError. When ``False``, you can use the pool on an HTTP proxy and request foreign hosts. :param timeout: If specified, overrides the default timeout for this one request. It may be a float (in seconds) or an instance of :class:`urllib3.util.Timeout`. :param pool_timeout: If set and the pool is set to block=True, then this method will block for ``pool_timeout`` seconds and raise EmptyPoolError if no connection is available within the time period. :param release_conn: If False, then the urlopen call will not release the connection back into the pool once a response is received (but will release if you read the entire contents of the response such as when `preload_content=True`). This is useful if you're not preloading the response's content immediately. You will need to call ``r.release_conn()`` on the response ``r`` to return the connection back into the pool. If None, it takes the value of ``response_kw.get('preload_content', True)``. :param chunked: If True, urllib3 will send the body using chunked transfer encoding. Otherwise, urllib3 will send the body using the standard content-length form. Defaults to False. :param int body_pos: Position to seek to in file-like body in the event of a retry or redirect. Typically this won't need to be set because urllib3 will auto-populate the value when needed. :param \\response_kw: Additional parameters are passed to :meth:`urllib3.response.HTTPResponse.from_httplib` """ parsed_url = parse_url(url) destination_scheme = parsed_url.scheme if headers is None: headers = self.headers if not isinstance(retries, Retry): retries = Retry.from_int(retries, redirect=redirect, default=self.retries) if release_conn is None: release_conn = response_kw.get("preload_content", True) # Check host if assert_same_host and not self.is_same_host(url): raise HostChangedError(self, url, retries) # Ensure that the URL we're connecting to is properly encoded if url.startswith("/"): url = six.ensure_str(_encode_target(url)) else: url = six.ensure_str(parsed_url.url) conn = None # Track whether `conn` needs to be released before # returning/raising/recursing. Update this variable if necessary, and # leave `release_conn` constant throughout the function. That way, if # the function recurses, the original value of `release_conn` will be # passed down into the recursive call, and its value will be respected. # # See issue #651 [1] for details. # # [1] <https://github.com/urllib3/urllib3/issues/651> release_this_conn = release_conn http_tunnel_required = connection_requires_http_tunnel( self.proxy, self.proxy_config, destination_scheme ) # Merge the proxy headers. Only done when not using HTTP CONNECT. We # have to copy the headers dict so we can safely change it without those # changes being reflected in anyone else's copy. if not http_tunnel_required: headers = headers.copy() headers.update(self.proxy_headers) # Must keep the exception bound to a separate variable or else Python 3 # complains about UnboundLocalError. err = None # Keep track of whether we cleanly exited the except block. This # ensures we do proper cleanup in finally. clean_exit = False # Rewind body position, if needed. Record current position # for future rewinds in the event of a redirect/retry. body_pos = set_file_position(body, body_pos) try: # Request a connection from the queue. timeout_obj = self._get_timeout(timeout) conn = self._get_conn(timeout=pool_timeout) conn.timeout = timeout_obj.connect_timeout is_new_proxy_conn = self.proxy is not None and not getattr( conn, "sock", None ) if is_new_proxy_conn and http_tunnel_required: self._prepare_proxy(conn) # Make the request on the httplib connection object. httplib_response = self._make_request( conn, method, url, timeout=timeout_obj, body=body, headers=headers, chunked=chunked, ) # If we're going to release the connection in ``finally:``, then # the response doesn't need to know about the connection. Otherwise # it will also try to release it and we'll have a double-release # mess. response_conn = conn if not release_conn else None # Pass method to Response for length checking response_kw["request_method"] = method # Import httplib's response into our own wrapper object response = self.ResponseCls.from_httplib( httplib_response, pool=self, connection=response_conn, retries=retries, response_kw ) # Everything went great! clean_exit = True except EmptyPoolError: # Didn't get a connection from the pool, no need to clean up clean_exit = True release_this_conn = False raise except ( TimeoutError, HTTPException, SocketError, ProtocolError, BaseSSLError, SSLError, CertificateError, ) as e: # Discard the connection for these exceptions. It will be # replaced during the next _get_conn() call. clean_exit = False if isinstance(e, (BaseSSLError, CertificateError)): e = SSLError(e) elif isinstance(e, (SocketError, NewConnectionError)) and self.proxy: e = ProxyError("Cannot connect to proxy.", e) elif isinstance(e, (SocketError, HTTPException)): e = ProtocolError("Connection aborted.", e) retries = retries.increment( method, url, error=e, _pool=self, _stacktrace=sys.exc_info()[2] ) retries.sleep() # Keep track of the error for the retry warning. err = e finally: if not clean_exit: # We hit some kind of exception, handled or otherwise. We need # to throw the connection away unless explicitly told not to. # Close the connection, set the variable to None, and make sure # we put the None back in the pool to avoid leaking it. conn = conn and conn.close() release_this_conn = True if release_this_conn: # Put the connection back to be reused. If the connection is # expired then it will be None, which will get replaced with a # fresh connection during _get_conn. self._put_conn(conn) if not conn: # Try again log.warning( "Retrying (%r) after connection broken by '%r': %s", retries, err, url ) return self.urlopen( method, url, body, headers, retries, redirect, assert_same_host, timeout=timeout, pool_timeout=pool_timeout, release_conn=release_conn, chunked=chunked, body_pos=body_pos, response_kw ) # Handle redirect? redirect_location = redirect and response.get_redirect_location() if redirect_location: if response.status == 303: # Change the method according to RFC 9110, Section 15.4.4. method = "GET" # And lose the body not to transfer anything sensitive. body = None headers = HTTPHeaderDict(headers)._prepare_for_method_change() try: retries = retries.increment(method, url, response=response, _pool=self) except MaxRetryError: if retries.raise_on_redirect: response.drain_conn() raise return response response.drain_conn() retries.sleep_for_retry(response) log.debug("Redirecting %s -> %s", url, redirect_location) return self.urlopen( method, redirect_location, body, headers, retries=retries, redirect=redirect, assert_same_host=assert_same_host, timeout=timeout, pool_timeout=pool_timeout, release_conn=release_conn, chunked=chunked, body_pos=body_pos, response_kw ) # Check if we should retry the HTTP response. has_retry_after = bool(response.getheader("Retry-After")) if retries.is_retry(method, response.status, has_retry_after): try: retries = retries.increment(method, url, response=response, _pool=self) except MaxRetryError: if retries.raise_on_status: response.drain_conn() raise return response response.drain_conn() retries.sleep(response) log.debug("Retry: %s", url) return self.urlopen( method, url, body, headers, retries=retries, redirect=redirect, assert_same_host=assert_same_host, timeout=timeout, pool_timeout=pool_timeout, release_conn=release_conn, chunked=chunked, body_pos=body_pos, response_kw ) return response class HTTPSConnectionPool(HTTPConnectionPool): """ Same as :class:`.HTTPConnectionPool`, but HTTPS. :class:`.HTTPSConnection` uses one of ``assert_fingerprint``, ``assert_hostname`` and ``host`` in this order to verify connections. If ``assert_hostname`` is False, no verification is done. The ``key_file``, ``cert_file``, ``cert_reqs``, ``ca_certs``, ``ca_cert_dir``, ``ssl_version``, ``key_password`` are only used if :mod:`ssl` is available and are fed into :meth:`urllib3.util.ssl_wrap_socket` to upgrade the connection socket into an SSL socket. On Debian, SSL certificate validation is required by default """ scheme = "https" ConnectionCls = HTTPSConnection def __init__( self, host, port=None, strict=False, timeout=Timeout.DEFAULT_TIMEOUT, maxsize=1, block=False, headers=None, retries=None, _proxy=None, _proxy_headers=None, key_file=None, cert_file=None, cert_reqs='CERT_REQUIRED', key_password=None, ca_certs='/etc/ssl/certs/ca-certificates.crt', ssl_version=None, assert_hostname=None, assert_fingerprint=None, ca_cert_dir=None, conn_kw ): HTTPConnectionPool.__init__( self, host, port, strict, timeout, maxsize, block, headers, retries, _proxy, _proxy_headers, conn_kw ) self.key_file = key_file self.cert_file = cert_file self.cert_reqs = cert_reqs self.key_password = key_password self.ca_certs = ca_certs self.ca_cert_dir = ca_cert_dir self.ssl_version = ssl_version self.assert_hostname = assert_hostname self.assert_fingerprint = assert_fingerprint def _prepare_conn(self, conn): """ Prepare the ``connection`` for :meth:`urllib3.util.ssl_wrap_socket` and establish the tunnel if proxy is used. """ if isinstance(conn, VerifiedHTTPSConnection): conn.set_cert( key_file=self.key_file, key_password=self.key_password, cert_file=self.cert_file, cert_reqs=self.cert_reqs, ca_certs=self.ca_certs, ca_cert_dir=self.ca_cert_dir, assert_hostname=self.assert_hostname, assert_fingerprint=self.assert_fingerprint, ) conn.ssl_version = self.ssl_version return conn def _prepare_proxy(self, conn): """ Establishes a tunnel connection through HTTP CONNECT. Tunnel connection is established early because otherwise httplib would improperly set Host: header to proxy's IP:port. """ conn.set_tunnel(self._proxy_host, self.port, self.proxy_headers) if self.proxy.scheme == "https": conn.tls_in_tls_required = True conn.connect() def _new_conn(self): """ Return a fresh :class:`http.client.HTTPSConnection`. """ self.num_connections += 1 log.debug( "Starting new HTTPS connection (%d): %s:%s", self.num_connections, self.host, self.port or "443", ) if not self.ConnectionCls or self.ConnectionCls is DummyConnection: raise SSLError( "Can't connect to HTTPS URL because the SSL module is not available." ) actual_host = self.host actual_port = self.port if self.proxy is not None: actual_host = self.proxy.host actual_port = self.proxy.port conn = self.ConnectionCls( host=actual_host, port=actual_port, timeout=self.timeout.connect_timeout, strict=self.strict, cert_file=self.cert_file, key_file=self.key_file, key_password=self.key_password, self.conn_kw ) return self._prepare_conn(conn) def _validate_conn(self, conn): """ Called right before a request is made, after the socket is created. """ super(HTTPSConnectionPool, self)._validate_conn(conn) # Force connect early to allow us to validate the connection. if not getattr(conn, "sock", None): # AppEngine might not have `.sock` conn.connect() if not conn.is_verified: warnings.warn( ( "Unverified HTTPS request is being made to host '%s'. " "Adding certificate verification is strongly advised. See: " "https://urllib3.readthedocs.io/en/latest/advanced-usage.html" "#ssl-warnings" % conn.host ), InsecureRequestWarning, ) def connection_from_url(url, kw): """ Given a url, return an :class:`.ConnectionPool` instance of its host. This is a shortcut for not having to parse out the scheme, host, and port of the url before creating an :class:`.ConnectionPool` instance. :param url: Absolute URL string that must include the scheme. Port is optional. :param \\kw: Passes additional parameters to the constructor of the appropriate :class:`.ConnectionPool`. Useful for specifying things like timeout, maxsize, headers, etc. Example:: >>> conn = connection_from_url('http://google.com/') >>> r = conn.request('GET', '/') """ scheme, host, port = get_host(url) port = port or port_by_scheme.get(scheme, 80) if scheme == "https": return HTTPSConnectionPool(host, port=port, kw) else: return HTTPConnectionPool(host, port=port, *kw) def _normalize_host(host, scheme): """ Normalize hosts for comparisons and use with sockets. """ host = normalize_host(host, scheme) # httplib doesn't like it when we include brackets in IPv6 addresses # Specifically, if we include brackets but also pass the port then # httplib crazily doubles up the square brackets on the Host header. # Instead, we need to make sure we never pass ``None`` as the port. # However, for backward compatibility reasons we can't actually # assert* that. See http://bugs.python.org/issue28539 if host.startswith("[") and host.endswith("]"): host = host[1:-1] return host ��_version.py��0000644��00000000077�15027623470�0006754 0��ustar�00��# This file is protected via CODEOWNERS __version__ = "1.26.5" ��contrib/appengine.py��0000644��00000025367�15027623470�0010547 0��ustar�00��""" This module provides a pool manager that uses Google App Engine's `URLFetch Service <https://cloud.google.com/appengine/docs/python/urlfetch>`_. Example usage:: from urllib3 import PoolManager from urllib3.contrib.appengine import AppEngineManager, is_appengine_sandbox if is_appengine_sandbox(): # AppEngineManager uses AppEngine's URLFetch API behind the scenes http = AppEngineManager() else: # PoolManager uses a socket-level API behind the scenes http = PoolManager() r = http.request('GET', 'https://google.com/') There are `limitations <https://cloud.google.com/appengine/docs/python/\ urlfetch/#Python_Quotas_and_limits>`_ to the URLFetch service and it may not be the best choice for your application. There are three options for using urllib3 on Google App Engine: 1. You can use :class:`AppEngineManager` with URLFetch. URLFetch is cost-effective in many circumstances as long as your usage is within the limitations. 2. You can use a normal :class:`~urllib3.PoolManager` by enabling sockets. Sockets also have `limitations and restrictions <https://cloud.google.com/appengine/docs/python/sockets/\ #limitations-and-restrictions>`_ and have a lower free quota than URLFetch. To use sockets, be sure to specify the following in your ``app.yaml``:: env_variables: GAE_USE_SOCKETS_HTTPLIB : 'true' 3. If you are using `App Engine Flexible <https://cloud.google.com/appengine/docs/flexible/>`_, you can use the standard :class:`PoolManager` without any configuration or special environment variables. """ from __future__ import absolute_import import io import logging import warnings from ..exceptions import ( HTTPError, HTTPWarning, MaxRetryError, ProtocolError, SSLError, TimeoutError, ) from six.moves.urllib.parse import urljoin from ..request import RequestMethods from ..response import HTTPResponse from ..util.retry import Retry from ..util.timeout import Timeout from . import _appengine_environ try: from google.appengine.api import urlfetch except ImportError: urlfetch = None log = logging.getLogger(__name__) class AppEnginePlatformWarning(HTTPWarning): pass class AppEnginePlatformError(HTTPError): pass class AppEngineManager(RequestMethods): """ Connection manager for Google App Engine sandbox applications. This manager uses the URLFetch service directly instead of using the emulated httplib, and is subject to URLFetch limitations as described in the App Engine documentation `here <https://cloud.google.com/appengine/docs/python/urlfetch>`_. Notably it will raise an :class:`AppEnginePlatformError` if: * URLFetch is not available. * If you attempt to use this on App Engine Flexible, as full socket support is available. * If a request size is more than 10 megabytes. * If a response size is more than 32 megabytes. * If you use an unsupported request method such as OPTIONS. Beyond those cases, it will raise normal urllib3 errors. """ def __init__( self, headers=None, retries=None, validate_certificate=True, urlfetch_retries=True, ): if not urlfetch: raise AppEnginePlatformError( "URLFetch is not available in this environment." ) warnings.warn( "urllib3 is using URLFetch on Google App Engine sandbox instead " "of sockets. To use sockets directly instead of URLFetch see " "https://urllib3.readthedocs.io/en/latest/reference/urllib3.contrib.html.", AppEnginePlatformWarning, ) RequestMethods.__init__(self, headers) self.validate_certificate = validate_certificate self.urlfetch_retries = urlfetch_retries self.retries = retries or Retry.DEFAULT def __enter__(self): return self def __exit__(self, exc_type, exc_val, exc_tb): # Return False to re-raise any potential exceptions return False def urlopen( self, method, url, body=None, headers=None, retries=None, redirect=True, timeout=Timeout.DEFAULT_TIMEOUT, response_kw ): retries = self._get_retries(retries, redirect) try: follow_redirects = redirect and retries.redirect != 0 and retries.total response = urlfetch.fetch( url, payload=body, method=method, headers=headers or {}, allow_truncated=False, follow_redirects=self.urlfetch_retries and follow_redirects, deadline=self._get_absolute_timeout(timeout), validate_certificate=self.validate_certificate, ) except urlfetch.DeadlineExceededError as e: raise TimeoutError(self, e) except urlfetch.InvalidURLError as e: if "too large" in str(e): raise AppEnginePlatformError( "URLFetch request too large, URLFetch only " "supports requests up to 10mb in size.", e, ) raise ProtocolError(e) except urlfetch.DownloadError as e: if "Too many redirects" in str(e): raise MaxRetryError(self, url, reason=e) raise ProtocolError(e) except urlfetch.ResponseTooLargeError as e: raise AppEnginePlatformError( "URLFetch response too large, URLFetch only supports" "responses up to 32mb in size.", e, ) except urlfetch.SSLCertificateError as e: raise SSLError(e) except urlfetch.InvalidMethodError as e: raise AppEnginePlatformError( "URLFetch does not support method: %s" % method, e ) http_response = self._urlfetch_response_to_http_response( response, retries=retries, response_kw ) # Handle redirect? redirect_location = redirect and http_response.get_redirect_location() if redirect_location: # Check for redirect response if self.urlfetch_retries and retries.raise_on_redirect: raise MaxRetryError(self, url, "too many redirects") else: if http_response.status == 303: method = "GET" try: retries = retries.increment( method, url, response=http_response, _pool=self ) except MaxRetryError: if retries.raise_on_redirect: raise MaxRetryError(self, url, "too many redirects") return http_response retries.sleep_for_retry(http_response) log.debug("Redirecting %s -> %s", url, redirect_location) redirect_url = urljoin(url, redirect_location) return self.urlopen( method, redirect_url, body, headers, retries=retries, redirect=redirect, timeout=timeout, response_kw ) # Check if we should retry the HTTP response. has_retry_after = bool(http_response.getheader("Retry-After")) if retries.is_retry(method, http_response.status, has_retry_after): retries = retries.increment(method, url, response=http_response, _pool=self) log.debug("Retry: %s", url) retries.sleep(http_response) return self.urlopen( method, url, body=body, headers=headers, retries=retries, redirect=redirect, timeout=timeout, response_kw ) return http_response def _urlfetch_response_to_http_response(self, urlfetch_resp, response_kw): if is_prod_appengine(): # Production GAE handles deflate encoding automatically, but does # not remove the encoding header. content_encoding = urlfetch_resp.headers.get("content-encoding") if content_encoding == "deflate": del urlfetch_resp.headers["content-encoding"] transfer_encoding = urlfetch_resp.headers.get("transfer-encoding") # We have a full response's content, # so let's make sure we don't report ourselves as chunked data. if transfer_encoding == "chunked": encodings = transfer_encoding.split(",") encodings.remove("chunked") urlfetch_resp.headers["transfer-encoding"] = ",".join(encodings) original_response = HTTPResponse( # In order for decoding to work, we must present the content as # a file-like object. body=io.BytesIO(urlfetch_resp.content), msg=urlfetch_resp.header_msg, headers=urlfetch_resp.headers, status=urlfetch_resp.status_code, response_kw ) return HTTPResponse( body=io.BytesIO(urlfetch_resp.content), headers=urlfetch_resp.headers, status=urlfetch_resp.status_code, original_response=original_response, *response_kw ) def _get_absolute_timeout(self, timeout): if timeout is Timeout.DEFAULT_TIMEOUT: return None # Defer to URLFetch's default. if isinstance(timeout, Timeout): if timeout._read is not None or timeout._connect is not None: warnings.warn( "URLFetch does not support granular timeout settings, " "reverting to total or default URLFetch timeout.", AppEnginePlatformWarning, ) return timeout.total return timeout def _get_retries(self, retries, redirect): if not isinstance(retries, Retry): retries = Retry.from_int(retries, redirect=redirect, default=self.retries) if retries.connect or retries.read or retries.redirect: warnings.warn( "URLFetch only supports total retries and does not " "recognize connect, read, or redirect retry parameters.", AppEnginePlatformWarning, ) return retries # Alias methods from _appengine_environ to maintain public API interface. is_appengine = _appengine_environ.is_appengine is_appengine_sandbox = _appengine_environ.is_appengine_sandbox is_local_appengine = _appengine_environ.is_local_appengine is_prod_appengine = _appengine_environ.is_prod_appengine is_prod_appengine_mvms = _appengine_environ.is_prod_appengine_mvms ��contrib/__pycache__/securetransport.cpython-310.pyc��0000644��00000052536�15027623470�0016401 0��ustar�00��o ��~�`q��@��s��d�Z�ddlmZ�ddlZddlZddlZddlZddlZddl Z ddl Z ddlZddlZddl Z ddlZddlmZ�ddlmZ�ddlmZmZmZ�dd lmZmZmZmZmZmZ�zdd l mZ�W�n�eys��dZddl m!Z!�Y�nw�dd gZ"dZ#ej#Z$ej%j&Z'e �(��Z)e���Z+dZ,ej-ej.ej/ej0ej1ej2ej3ej4ej5ej6ej7ej8ej9ej:ej;ej<ej=ej>ej?ej@ejAejBejCejDejEejFejGejHejIejJgZKejLejMejNfeejMejNfiZOePe d�r�ejQejQfeOe jR<�ePe d�r�ejSejSfeOe jT<�ePe d��rejMejMfeOe jU<�ePe d��rejVejVfeOe jW<�ePe d��r!ejNejNfeOe jX<�dd��ZYdd ��ZZdd��Z[dd��Z\e�]e[�Z^e�_e\�Z`G�dd��dea�Zbe�rLd$dd�Zcnd%d!d�Zceceb_cG�d"d#��d#ea�ZddS�)&a� �� SecureTranport support for urllib3 via ctypes. This makes platform-native TLS available to urllib3 users on macOS without the use of a compiler. This is an important feature because the Python Package Index is moving to become a TLSv1.2-or-higher server, and the default OpenSSL that ships with macOS is not capable of doing TLSv1.2. The only way to resolve this is to give macOS users an alternative solution to the problem, and that solution is to use SecureTransport. We use ctypes here because this solution must not require a compiler. That's because pip is not allowed to require a compiler either. This is not intended to be a seriously long-term solution to this problem. The hope is that PEP 543 will eventually solve this issue for us, at which point we can retire this contrib module. But in the short term, we need to solve the impending tire fire that is Python on Mac without this kind of contrib module. So...here we are. To use this module, simply import and inject it:: import urllib3.contrib.securetransport urllib3.contrib.securetransport.inject_into_urllib3() Happy TLSing! This code is a bastardised version of the code found in Will Bond's oscrypto library. An enormous debt is owed to him for blazing this trail for us. For that reason, this code should be considered to be covered both by urllib3's license and by oscrypto's: .. code-block:: Copyright (c) 2015-2016 Will Bond <will@wbond.net> Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. ��)�absolute_importN��)�util)�PROTOCOL_TLS_CLIENT��)�CoreFoundation�Security� SecurityConst)�_assert_no_error�_build_tls_unknown_ca_alert�_cert_array_from_pem�_create_cfstring_array�_load_client_cert_chain�_temporary_keychain)�_fileobject��backport_makefile�inject_into_urllib3�extract_from_urllib3Ti�@��PROTOCOL_SSLv2�PROTOCOL_SSLv3�PROTOCOL_TLSv1�PROTOCOL_TLSv1_1�PROTOCOL_TLSv1_2c��C��s.��t�t_t�tj_tt_ttj_dt_dtj_dS�)zG Monkey-patch urllib3 with SecureTransport-backed SSL-support. TN)�SecureTransportContextr�� SSLContext�ssl_�HAS_SNI�IS_SECURETRANSPORT��r��r��A/usr/lib/python3/dist-packages/urllib3/contrib/securetransport.pyr��c��C��s.��t�t_t�tj_tt_ttj_dt_dtj_dS�)z> Undo monkey-patching by :func:`inject_into_urllib3`. 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""" super(NTLMConnectionPool, self).__init__(args, *kwargs) self.authurl = authurl self.rawuser = user user_parts = user.split("\\", 1) self.domain = user_parts[0].upper() self.user = user_parts[1] self.pw = pw def _new_conn(self): # Performs the NTLM handshake that secures the connection. The socket # must be kept open while requests are performed. self.num_connections += 1 log.debug( "Starting NTLM HTTPS connection no. %d: https://%s%s", self.num_connections, self.host, self.authurl, ) headers = {"Connection": "Keep-Alive"} req_header = "Authorization" resp_header = "www-authenticate" conn = HTTPSConnection(host=self.host, port=self.port) # Send negotiation message headers[req_header] = "NTLM %s" % ntlm.create_NTLM_NEGOTIATE_MESSAGE( self.rawuser ) log.debug("Request headers: %s", headers) conn.request("GET", self.authurl, None, headers) res = conn.getresponse() reshdr = dict(res.getheaders()) log.debug("Response status: %s %s", res.status, res.reason) log.debug("Response headers: %s", reshdr) log.debug("Response data: %s [...]", res.read(100)) # Remove the reference to the socket, so that it can not be closed by # the response object (we want to keep the socket open) res.fp = None # Server should respond with a challenge message auth_header_values = reshdr[resp_header].split(", ") auth_header_value = None for s in auth_header_values: if s[:5] == "NTLM ": auth_header_value = s[5:] if auth_header_value is None: raise Exception( "Unexpected %s response header: %s" % (resp_header, reshdr[resp_header]) ) # Send authentication message ServerChallenge, NegotiateFlags = ntlm.parse_NTLM_CHALLENGE_MESSAGE( auth_header_value ) auth_msg = ntlm.create_NTLM_AUTHENTICATE_MESSAGE( ServerChallenge, self.user, self.domain, self.pw, NegotiateFlags ) headers[req_header] = "NTLM %s" % auth_msg log.debug("Request headers: %s", headers) conn.request("GET", self.authurl, None, headers) res = conn.getresponse() log.debug("Response status: %s %s", res.status, res.reason) log.debug("Response headers: %s", dict(res.getheaders())) log.debug("Response data: %s [...]", res.read()[:100]) if res.status != 200: if res.status == 401: raise Exception("Server rejected request: wrong username or password") raise Exception("Wrong server response: %s %s" % (res.status, res.reason)) res.fp = None log.debug("Connection established") return conn def urlopen( self, method, url, body=None, headers=None, retries=3, redirect=True, assert_same_host=True, ): if headers is None: headers = {} headers["Connection"] = "Keep-Alive" return super(NTLMConnectionPool, self).urlopen( method, url, body, headers, retries, redirect, assert_same_host ) ��contrib/pyopenssl.py��0000644��00000040732�15027623470�0010626 0��ustar�00��""" TLS with SNI_-support for Python 2. Follow these instructions if you would like to verify TLS certificates in Python 2. Note, the default libraries do not* do certificate checking; you need to do additional work to validate certificates yourself. This needs the following packages installed: * `pyOpenSSL`_ (tested with 16.0.0) * `cryptography`_ (minimum 1.3.4, from pyopenssl) * `idna`_ (minimum 2.0, from cryptography) However, pyopenssl depends on cryptography, which depends on idna, so while we use all three directly here we end up having relatively few packages required. You can install them with the following command: .. code-block:: bash $ python -m pip install pyopenssl cryptography idna To activate certificate checking, call :func:`~urllib3.contrib.pyopenssl.inject_into_urllib3` from your Python code before you begin making HTTP requests. This can be done in a ``sitecustomize`` module, or at any other time before your application begins using ``urllib3``, like this: .. code-block:: python try: import urllib3.contrib.pyopenssl urllib3.contrib.pyopenssl.inject_into_urllib3() except ImportError: pass Now you can use :mod:`urllib3` as you normally would, and it will support SNI when the required modules are installed. Activating this module also has the positive side effect of disabling SSL/TLS compression in Python 2 (see `CRIME attack`_). .. _sni: https://en.wikipedia.org/wiki/Server_Name_Indication .. _crime attack: https://en.wikipedia.org/wiki/CRIME_(security_exploit) .. _pyopenssl: https://www.pyopenssl.org .. _cryptography: https://cryptography.io .. _idna: https://github.com/kjd/idna """ from __future__ import absolute_import import OpenSSL.SSL from cryptography import x509 from cryptography.hazmat.backends.openssl import backend as openssl_backend from cryptography.hazmat.backends.openssl.x509 import _Certificate try: from cryptography.x509 import UnsupportedExtension except ImportError: # UnsupportedExtension is gone in cryptography >= 2.1.0 class UnsupportedExtension(Exception): pass from io import BytesIO from socket import error as SocketError from socket import timeout try: # Platform-specific: Python 2 from socket import _fileobject except ImportError: # Platform-specific: Python 3 _fileobject = None from ..packages.backports.makefile import backport_makefile import logging import ssl import sys from .. import util import six from ..util.ssl_ import PROTOCOL_TLS_CLIENT __all__ = ["inject_into_urllib3", "extract_from_urllib3"] # SNI always works. HAS_SNI = True # Map from urllib3 to PyOpenSSL compatible parameter-values. _openssl_versions = { util.PROTOCOL_TLS: OpenSSL.SSL.SSLv23_METHOD, PROTOCOL_TLS_CLIENT: OpenSSL.SSL.SSLv23_METHOD, ssl.PROTOCOL_TLSv1: OpenSSL.SSL.TLSv1_METHOD, } if hasattr(ssl, "PROTOCOL_SSLv3") and hasattr(OpenSSL.SSL, "SSLv3_METHOD"): _openssl_versions[ssl.PROTOCOL_SSLv3] = OpenSSL.SSL.SSLv3_METHOD if hasattr(ssl, "PROTOCOL_TLSv1_1") and hasattr(OpenSSL.SSL, "TLSv1_1_METHOD"): _openssl_versions[ssl.PROTOCOL_TLSv1_1] = OpenSSL.SSL.TLSv1_1_METHOD if hasattr(ssl, "PROTOCOL_TLSv1_2") and hasattr(OpenSSL.SSL, "TLSv1_2_METHOD"): _openssl_versions[ssl.PROTOCOL_TLSv1_2] = OpenSSL.SSL.TLSv1_2_METHOD _stdlib_to_openssl_verify = { ssl.CERT_NONE: OpenSSL.SSL.VERIFY_NONE, ssl.CERT_OPTIONAL: OpenSSL.SSL.VERIFY_PEER, ssl.CERT_REQUIRED: OpenSSL.SSL.VERIFY_PEER + OpenSSL.SSL.VERIFY_FAIL_IF_NO_PEER_CERT, } _openssl_to_stdlib_verify = dict((v, k) for k, v in _stdlib_to_openssl_verify.items()) # OpenSSL will only write 16K at a time SSL_WRITE_BLOCKSIZE = 16384 orig_util_HAS_SNI = util.HAS_SNI orig_util_SSLContext = util.ssl_.SSLContext log = logging.getLogger(__name__) def inject_into_urllib3(): "Monkey-patch urllib3 with PyOpenSSL-backed SSL-support." _validate_dependencies_met() util.SSLContext = PyOpenSSLContext util.ssl_.SSLContext = PyOpenSSLContext util.HAS_SNI = HAS_SNI util.ssl_.HAS_SNI = HAS_SNI util.IS_PYOPENSSL = True util.ssl_.IS_PYOPENSSL = True def extract_from_urllib3(): "Undo monkey-patching by :func:`inject_into_urllib3`." util.SSLContext = orig_util_SSLContext util.ssl_.SSLContext = orig_util_SSLContext util.HAS_SNI = orig_util_HAS_SNI util.ssl_.HAS_SNI = orig_util_HAS_SNI util.IS_PYOPENSSL = False util.ssl_.IS_PYOPENSSL = False def _validate_dependencies_met(): """ Verifies that PyOpenSSL's package-level dependencies have been met. Throws `ImportError` if they are not met. """ # Method added in `cryptography==1.1`; not available in older versions from cryptography.x509.extensions import Extensions if getattr(Extensions, "get_extension_for_class", None) is None: raise ImportError( "'cryptography' module missing required functionality. " "Try upgrading to v1.3.4 or newer." ) # pyOpenSSL 0.14 and above use cryptography for OpenSSL bindings. The _x509 # attribute is only present on those versions. from OpenSSL.crypto import X509 x509 = X509() if getattr(x509, "_x509", None) is None: raise ImportError( "'pyOpenSSL' module missing required functionality. " "Try upgrading to v0.14 or newer." ) def _dnsname_to_stdlib(name): """ Converts a dNSName SubjectAlternativeName field to the form used by the standard library on the given Python version. Cryptography produces a dNSName as a unicode string that was idna-decoded from ASCII bytes. We need to idna-encode that string to get it back, and then on Python 3 we also need to convert to unicode via UTF-8 (the stdlib uses PyUnicode_FromStringAndSize on it, which decodes via UTF-8). If the name cannot be idna-encoded then we return None signalling that the name given should be skipped. """ def idna_encode(name): """ Borrowed wholesale from the Python Cryptography Project. It turns out that we can't just safely call `idna.encode`: it can explode for wildcard names. This avoids that problem. """ import idna try: for prefix in [u".", u"."]: if name.startswith(prefix): name = name[len(prefix) :] return prefix.encode("ascii") + idna.encode(name) return idna.encode(name) except idna.core.IDNAError: return None # Don't send IPv6 addresses through the IDNA encoder. if ":" in name: return name name = idna_encode(name) if name is None: return None elif sys.version_info >= (3, 0): name = name.decode("utf-8") return name def get_subj_alt_name(peer_cert): """ Given an PyOpenSSL certificate, provides all the subject alternative names. """ # Pass the cert to cryptography, which has much better APIs for this. if hasattr(peer_cert, "to_cryptography"): cert = peer_cert.to_cryptography() else: # This is technically using private APIs, but should work across all # relevant versions before PyOpenSSL got a proper API for this. cert = _Certificate(openssl_backend, peer_cert._x509) # We want to find the SAN extension. Ask Cryptography to locate it (it's # faster than looping in Python) try: ext = cert.extensions.get_extension_for_class(x509.SubjectAlternativeName).value except x509.ExtensionNotFound: # No such extension, return the empty list. return [] except ( x509.DuplicateExtension, UnsupportedExtension, x509.UnsupportedGeneralNameType, UnicodeError, ) as e: # A problem has been found with the quality of the certificate. Assume # no SAN field is present. log.warning( "A problem was encountered with the certificate that prevented " "urllib3 from finding the SubjectAlternativeName field. This can " "affect certificate validation. The error was %s", e, ) return [] # We want to return dNSName and iPAddress fields. We need to cast the IPs # back to strings because the match_hostname function wants them as # strings. # Sadly the DNS names need to be idna encoded and then, on Python 3, UTF-8 # decoded. This is pretty frustrating, but that's what the standard library # does with certificates, and so we need to attempt to do the same. # We also want to skip over names which cannot be idna encoded. names = [ ("DNS", name) for name in map(_dnsname_to_stdlib, ext.get_values_for_type(x509.DNSName)) if name is not None ] names.extend( ("IP Address", str(name)) for name in ext.get_values_for_type(x509.IPAddress) ) return names class WrappedSocket(object): """API-compatibility wrapper for Python OpenSSL's Connection-class. Note: _makefile_refs, _drop() and _reuse() are needed for the garbage collector of pypy. """ def __init__(self, connection, socket, suppress_ragged_eofs=True): self.connection = connection self.socket = socket self.suppress_ragged_eofs = suppress_ragged_eofs self._makefile_refs = 0 self._closed = False def fileno(self): return self.socket.fileno() # Copy-pasted from Python 3.5 source code def _decref_socketios(self): if self._makefile_refs > 0: self._makefile_refs -= 1 if self._closed: self.close() def recv(self, args, *kwargs): try: data = self.connection.recv(args, *kwargs) except OpenSSL.SSL.SysCallError as e: if self.suppress_ragged_eofs and e.args == (-1, "Unexpected EOF"): return b"" else: raise SocketError(str(e)) except OpenSSL.SSL.ZeroReturnError: if self.connection.get_shutdown() == OpenSSL.SSL.RECEIVED_SHUTDOWN: return b"" else: raise except OpenSSL.SSL.WantReadError: if not util.wait_for_read(self.socket, self.socket.gettimeout()): raise timeout("The read operation timed out") else: return self.recv(args, *kwargs) # TLS 1.3 post-handshake authentication except OpenSSL.SSL.Error as e: raise ssl.SSLError("read error: %r" % e) else: return data def recv_into(self, args, *kwargs): try: return self.connection.recv_into(args, *kwargs) except OpenSSL.SSL.SysCallError as e: if self.suppress_ragged_eofs and e.args == (-1, "Unexpected EOF"): return 0 else: raise SocketError(str(e)) except OpenSSL.SSL.ZeroReturnError: if self.connection.get_shutdown() == OpenSSL.SSL.RECEIVED_SHUTDOWN: return 0 else: raise except OpenSSL.SSL.WantReadError: if not util.wait_for_read(self.socket, self.socket.gettimeout()): raise timeout("The read operation timed out") else: return self.recv_into(args, *kwargs) # TLS 1.3 post-handshake authentication except OpenSSL.SSL.Error as e: raise ssl.SSLError("read error: %r" % e) def settimeout(self, timeout): return self.socket.settimeout(timeout) def _send_until_done(self, data): while True: try: return self.connection.send(data) except OpenSSL.SSL.WantWriteError: if not util.wait_for_write(self.socket, self.socket.gettimeout()): raise timeout() continue except OpenSSL.SSL.SysCallError as e: raise SocketError(str(e)) def sendall(self, data): total_sent = 0 while total_sent < len(data): sent = self._send_until_done( data[total_sent : total_sent + SSL_WRITE_BLOCKSIZE] ) total_sent += sent def shutdown(self): # FIXME rethrow compatible exceptions should we ever use this self.connection.shutdown() def close(self): if self._makefile_refs < 1: try: self._closed = True return self.connection.close() except OpenSSL.SSL.Error: return else: self._makefile_refs -= 1 def getpeercert(self, binary_form=False): x509 = self.connection.get_peer_certificate() if not x509: return x509 if binary_form: return OpenSSL.crypto.dump_certificate(OpenSSL.crypto.FILETYPE_ASN1, x509) return { "subject": ((("commonName", x509.get_subject().CN),),), "subjectAltName": get_subj_alt_name(x509), } def version(self): return self.connection.get_protocol_version_name() def _reuse(self): self._makefile_refs += 1 def _drop(self): if self._makefile_refs < 1: self.close() else: self._makefile_refs -= 1 if _fileobject: # Platform-specific: Python 2 def makefile(self, mode, bufsize=-1): self._makefile_refs += 1 return _fileobject(self, mode, bufsize, close=True) else: # Platform-specific: Python 3 makefile = backport_makefile WrappedSocket.makefile = makefile class PyOpenSSLContext(object): """ I am a wrapper class for the PyOpenSSL ``Context`` object. I am responsible for translating the interface of the standard library ``SSLContext`` object to calls into PyOpenSSL. """ def __init__(self, protocol): self.protocol = _openssl_versions[protocol] self._ctx = OpenSSL.SSL.Context(self.protocol) self._options = 0 self.check_hostname = False @property def options(self): return self._options @options.setter def options(self, value): self._options = value self._ctx.set_options(value) @property def verify_mode(self): return _openssl_to_stdlib_verify[self._ctx.get_verify_mode()] @verify_mode.setter def verify_mode(self, value): self._ctx.set_verify(_stdlib_to_openssl_verify[value], _verify_callback) def set_default_verify_paths(self): self._ctx.set_default_verify_paths() def set_ciphers(self, ciphers): if isinstance(ciphers, six.text_type): ciphers = ciphers.encode("utf-8") self._ctx.set_cipher_list(ciphers) def load_verify_locations(self, cafile=None, capath=None, cadata=None): if cafile is not None: cafile = cafile.encode("utf-8") if capath is not None: capath = capath.encode("utf-8") try: self._ctx.load_verify_locations(cafile, capath) if cadata is not None: self._ctx.load_verify_locations(BytesIO(cadata)) except OpenSSL.SSL.Error as e: raise ssl.SSLError("unable to load trusted certificates: %r" % e) def load_cert_chain(self, certfile, keyfile=None, password=None): self._ctx.use_certificate_chain_file(certfile) if password is not None: if not isinstance(password, six.binary_type): password = password.encode("utf-8") self._ctx.set_passwd_cb(lambda _: password) self._ctx.use_privatekey_file(keyfile or certfile) def set_alpn_protocols(self, protocols): protocols = [six.ensure_binary(p) for p in protocols] return self._ctx.set_alpn_protos(protocols) def wrap_socket( self, sock, server_side=False, do_handshake_on_connect=True, suppress_ragged_eofs=True, server_hostname=None, ): cnx = OpenSSL.SSL.Connection(self._ctx, sock) if isinstance(server_hostname, six.text_type): # Platform-specific: Python 3 server_hostname = server_hostname.encode("utf-8") if server_hostname is not None: cnx.set_tlsext_host_name(server_hostname) cnx.set_connect_state() while True: try: cnx.do_handshake() except OpenSSL.SSL.WantReadError: if not util.wait_for_read(sock, sock.gettimeout()): raise timeout("select timed out") continue except OpenSSL.SSL.Error as e: raise ssl.SSLError("bad handshake: %r" % e) break return WrappedSocket(cnx, sock) def _verify_callback(cnx, x509, err_no, err_depth, return_code): return err_no == 0 ��contrib/_appengine_environ.py��0000644��00000001675�15027623470�0012442 0��ustar�00��""" This module provides means to detect the App Engine environment. """ import os def is_appengine(): return is_local_appengine() or is_prod_appengine() def is_appengine_sandbox(): """Reports if the app is running in the first generation sandbox. The second generation runtimes are technically still in a sandbox, but it is much less restrictive, so generally you shouldn't need to check for it. see https://cloud.google.com/appengine/docs/standard/runtimes """ return is_appengine() and os.environ["APPENGINE_RUNTIME"] == "python27" def is_local_appengine(): return "APPENGINE_RUNTIME" in os.environ and os.environ.get( "SERVER_SOFTWARE", "" ).startswith("Development/") def is_prod_appengine(): return "APPENGINE_RUNTIME" in os.environ and os.environ.get( "SERVER_SOFTWARE", "" ).startswith("Google App Engine/") def is_prod_appengine_mvms(): """Deprecated.""" return False ��contrib/_securetransport/__pycache__/bindings.cpython-310.pyc��0000644��00000024632�15027623470�0020331 0��ustar�00��o ��Yh�D�� @��s��d�Z�ddlmZ�ddlZddlmZmZmZmZm Z m Z mZmZm Z mZmZmZ�ddlmZ�ddlmZ�e��dkr>ed��e��d�Zeeee�d ��Zed k�r^eded�ed�f��d d��Zedd�Z edd�Z!eZ"eZ#eZ$eZ%eZ&eZ'eZ(eZ)eZeZ+eZ,ee+�Z-eZ.eZ/ee%�Z0ee&�Z1ee'�Z2ee(�Z3ee)�Z4eZ5eZ6eZ7ee�Z8eZ9eZ:ee�Z;eZ<eZ=ee�Z>eZ?eZ@ee�ZAee�ZBeZCeZDeZEeZFeZGeZH�z�e0e1ee9�ee:�e<ee=�e>ee2�ge jI_Je/e jI_Kg�e jL_Je,e jL_Kg�e jM_Je,e jM_Kg�e jN_Je,e jN_Ke.e0ge jO_Je8e jO_Ke8ge jP_Je0e jP_Ke/ege jQ_Je1e jQ_Ke-e8ee;�ge jR_Je/e jR_Ke eee"eee>�ge jS_Je/e jS_Ke>ge jT_Je/e jT_Ke0e4ee2�ge jU_Je/e jU_Kee/eCeee ��ZVee/eCee �ee ��ZWeAeVeWge jX_Je/e jX_KeAe e ge jY_Je/e jY_KeAe2ge jZ_Je/e jZ_KeAe-e"ge j[_Je/e j[_KeAeCge j\_Je/e j\_KeAe e ge j]_Je/e j]_KeAge j^_Je/e j^_KeAe e ee �ge j__Je/e j__KeAe e ee �ge j`_Je/e j`_KeAge ja_Je/e ja_KeAee �ge jb_Je/e jb_KeAee@�ee �ge jc_Je/e jc_KeAee@�e ge jd_Je/e jd_KeAee �ge je_fe/e je_KeAee@�ee �ge jg_Je/e jg_KeAee@�ge jh_Je/e jh_KeAee?�ge ji_Je/e ji_KeAeeB�ge jj_Je/e jj_KeBe2ge jk_Je/e jk_KeBe"ge jl_me/e jl_KeBeeD�ge jn_Je/e jn_KeBge jo_Je#e jo_KeBe#ge jp_Je8e jp_Ke.eFeGge jq_JeAe jq_KeAeHe"ge jr_Je/e jr_KeAe?ge js_Je/e js_KeAe?ge jt_Je/e jt_KzeAe2ge ju_Je/e ju_KW�n �ev�y��Y�nw�e/ege jQ_Je1e jQ_KeVe _VeWe _WeAe _Ae?e _?e@e _@e;e _;e>e _>eBe _BeDe _De9e _9e/e _/e1�we d�e _xe1�we d�e _ye-ge!jz_Je-e!jz_Ke-ge!j{_Jde!j{_Ke-ge!j\|_Je,e!j\|_Ke.e e$ge!j}_Je1e!j}_Ke1e$ge!j~_Je e!j~_Ke1e e#e$ge!j_Jee!j_Ke.e e#ge!j�_Je0e!j�_Ke0ge!j�_Je#e!j�_Ke0ge!j�_Jee!j�_Ke.ee-�ee-�e#e6e7ge!j�_Je4e!j�_Ke4e-ge!j�_Je-e!j�_Ke.ee-�e#e5ge!j�_Je2e!j�_Ke.e#e5ge!j�_Je3e!j�_Ke3ege!j�_Jde!j�_Ke2ge!j�_Je#e!j�_Ke2e#ge!j�_Jee!j�_Ke.�we!d�e!_�e�we!d�e!_�e�we!d�e!_�e�we!d�e!_�e-e!_-e2e!_2e1e!_1e4e!_4W�n�ev�y��ed��w�G�dd��de��Z�G�dd��de��Z�dS�)ay�� This module uses ctypes to bind a whole bunch of functions and constants from SecureTransport. 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Has the end goal of returning a CFArray containing one SecIdentityRef, and then zero or more SecCertificateRef objects, suitable for use as a client certificate trust chain. c��s��s��\|�]}\|r\|V��qd�S��Nr ��)r��rm��r ��r ��r��r��Q��r��z_load_client_cert_chain.<locals>.<genexpr>r��)r��extendr��SecIdentityRef� SecIdentityCreateWithCertificater��r(��rJ��r��r��r,��popr'��r��r)�� itertools�chainr+��)rw��pathsr��r�� file_path�new_identities� new_certs�new_identityrx��trust_chainr2��objr ��r ��r��_load_client_cert_chain-��s:�� r��)r��)��r��)r��r��)r��r��)r��r��)�SSLv2�SSLv3�TLSv1zTLSv1.1zTLSv1.2c�� C��sH��t�\|��\}}d}d}t�d\|\|�}t\|�}d}t�d\|\|\|\|�\|�}\|S�)z6 Builds a TLS alert record for an unknown CA. r��0��z>BB��z>BBBH)�TLS_PROTOCOL_VERSIONS�struct�packr��) �version�ver_maj�ver_min�severity_fatal�description_unknown_ca�msg�msg_len�record_type_alert�recordr ��r ��r��_build_tls_unknown_ca_alert��s��r��r��)�__doc__rL��r��r��rh��rer.��r��rk��bindingsr��r��r��compile�DOTALLrR��r��r��r%��r4��rC��rJ��r\��rb��re��ry��r��r��r��r��r ��r ��r ��r��<module>��s@�� -#7L� ��contrib/_securetransport/bindings.py��0000644��00000042324�15027623470�0013770 0��ustar�00��""" This module uses ctypes to bind a whole bunch of functions and constants from SecureTransport. The goal here is to provide the low-level API to SecureTransport. These are essentially the C-level functions and constants, and they're pretty gross to work with. This code is a bastardised version of the code found in Will Bond's oscrypto library. An enormous debt is owed to him for blazing this trail for us. For that reason, this code should be considered to be covered both by urllib3's license and by oscrypto's: Copyright (c) 2015-2016 Will Bond <will@wbond.net> Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. """ from __future__ import absolute_import import platform from ctypes import ( CDLL, CFUNCTYPE, POINTER, c_bool, c_byte, c_char_p, c_int32, c_long, c_size_t, c_uint32, c_ulong, c_void_p, ) from ctypes.util import find_library from six import raise_from if platform.system() != "Darwin": raise ImportError("Only macOS is supported") version = platform.mac_ver()[0] version_info = tuple(map(int, version.split("."))) if version_info < (10, 8): raise OSError( "Only OS X 10.8 and newer are supported, not %s.%s" % (version_info[0], version_info[1]) ) def load_cdll(name, macos10_16_path): """Loads a CDLL by name, falling back to known path on 10.16+""" try: # Big Sur is technically 11 but we use 10.16 due to the Big Sur # beta being labeled as 10.16. if version_info >= (10, 16): path = macos10_16_path else: path = find_library(name) if not path: raise OSError # Caught and reraised as 'ImportError' return CDLL(path, use_errno=True) except OSError: raise_from(ImportError("The library %s failed to load" % name), None) Security = load_cdll( "Security", "/System/Library/Frameworks/Security.framework/Security" ) CoreFoundation = load_cdll( "CoreFoundation", "/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation", ) Boolean = c_bool CFIndex = c_long CFStringEncoding = c_uint32 CFData = c_void_p CFString = c_void_p CFArray = c_void_p CFMutableArray = c_void_p CFDictionary = c_void_p CFError = c_void_p CFType = c_void_p CFTypeID = c_ulong CFTypeRef = POINTER(CFType) CFAllocatorRef = c_void_p OSStatus = c_int32 CFDataRef = POINTER(CFData) CFStringRef = POINTER(CFString) CFArrayRef = POINTER(CFArray) CFMutableArrayRef = POINTER(CFMutableArray) CFDictionaryRef = POINTER(CFDictionary) CFArrayCallBacks = c_void_p CFDictionaryKeyCallBacks = c_void_p CFDictionaryValueCallBacks = c_void_p SecCertificateRef = POINTER(c_void_p) SecExternalFormat = c_uint32 SecExternalItemType = c_uint32 SecIdentityRef = POINTER(c_void_p) SecItemImportExportFlags = c_uint32 SecItemImportExportKeyParameters = c_void_p SecKeychainRef = POINTER(c_void_p) SSLProtocol = c_uint32 SSLCipherSuite = c_uint32 SSLContextRef = POINTER(c_void_p) SecTrustRef = POINTER(c_void_p) SSLConnectionRef = c_uint32 SecTrustResultType = c_uint32 SecTrustOptionFlags = c_uint32 SSLProtocolSide = c_uint32 SSLConnectionType = c_uint32 SSLSessionOption = c_uint32 try: Security.SecItemImport.argtypes = [ CFDataRef, CFStringRef, POINTER(SecExternalFormat), POINTER(SecExternalItemType), SecItemImportExportFlags, POINTER(SecItemImportExportKeyParameters), SecKeychainRef, POINTER(CFArrayRef), ] Security.SecItemImport.restype = OSStatus Security.SecCertificateGetTypeID.argtypes = [] Security.SecCertificateGetTypeID.restype = CFTypeID Security.SecIdentityGetTypeID.argtypes = [] Security.SecIdentityGetTypeID.restype = CFTypeID Security.SecKeyGetTypeID.argtypes = [] Security.SecKeyGetTypeID.restype = CFTypeID Security.SecCertificateCreateWithData.argtypes = [CFAllocatorRef, CFDataRef] Security.SecCertificateCreateWithData.restype = SecCertificateRef Security.SecCertificateCopyData.argtypes = [SecCertificateRef] Security.SecCertificateCopyData.restype = CFDataRef Security.SecCopyErrorMessageString.argtypes = [OSStatus, c_void_p] Security.SecCopyErrorMessageString.restype = CFStringRef Security.SecIdentityCreateWithCertificate.argtypes = [ CFTypeRef, SecCertificateRef, POINTER(SecIdentityRef), ] Security.SecIdentityCreateWithCertificate.restype = OSStatus Security.SecKeychainCreate.argtypes = [ c_char_p, c_uint32, c_void_p, Boolean, c_void_p, POINTER(SecKeychainRef), ] Security.SecKeychainCreate.restype = OSStatus Security.SecKeychainDelete.argtypes = [SecKeychainRef] Security.SecKeychainDelete.restype = OSStatus Security.SecPKCS12Import.argtypes = [ CFDataRef, CFDictionaryRef, POINTER(CFArrayRef), ] Security.SecPKCS12Import.restype = OSStatus SSLReadFunc = CFUNCTYPE(OSStatus, SSLConnectionRef, c_void_p, POINTER(c_size_t)) SSLWriteFunc = CFUNCTYPE( OSStatus, SSLConnectionRef, POINTER(c_byte), POINTER(c_size_t) ) Security.SSLSetIOFuncs.argtypes = [SSLContextRef, SSLReadFunc, SSLWriteFunc] Security.SSLSetIOFuncs.restype = OSStatus Security.SSLSetPeerID.argtypes = [SSLContextRef, c_char_p, c_size_t] Security.SSLSetPeerID.restype = OSStatus Security.SSLSetCertificate.argtypes = [SSLContextRef, CFArrayRef] Security.SSLSetCertificate.restype = OSStatus Security.SSLSetCertificateAuthorities.argtypes = [SSLContextRef, CFTypeRef, Boolean] Security.SSLSetCertificateAuthorities.restype = OSStatus Security.SSLSetConnection.argtypes = [SSLContextRef, SSLConnectionRef] Security.SSLSetConnection.restype = OSStatus Security.SSLSetPeerDomainName.argtypes = [SSLContextRef, c_char_p, c_size_t] Security.SSLSetPeerDomainName.restype = OSStatus Security.SSLHandshake.argtypes = [SSLContextRef] Security.SSLHandshake.restype = OSStatus Security.SSLRead.argtypes = [SSLContextRef, c_char_p, c_size_t, POINTER(c_size_t)] Security.SSLRead.restype = OSStatus Security.SSLWrite.argtypes = [SSLContextRef, c_char_p, c_size_t, POINTER(c_size_t)] Security.SSLWrite.restype = OSStatus Security.SSLClose.argtypes = [SSLContextRef] Security.SSLClose.restype = OSStatus Security.SSLGetNumberSupportedCiphers.argtypes = [SSLContextRef, POINTER(c_size_t)] Security.SSLGetNumberSupportedCiphers.restype = OSStatus Security.SSLGetSupportedCiphers.argtypes = [ SSLContextRef, POINTER(SSLCipherSuite), POINTER(c_size_t), ] Security.SSLGetSupportedCiphers.restype = OSStatus Security.SSLSetEnabledCiphers.argtypes = [ SSLContextRef, POINTER(SSLCipherSuite), c_size_t, ] Security.SSLSetEnabledCiphers.restype = OSStatus Security.SSLGetNumberEnabledCiphers.argtype = [SSLContextRef, POINTER(c_size_t)] Security.SSLGetNumberEnabledCiphers.restype = OSStatus Security.SSLGetEnabledCiphers.argtypes = [ SSLContextRef, POINTER(SSLCipherSuite), POINTER(c_size_t), ] Security.SSLGetEnabledCiphers.restype = OSStatus Security.SSLGetNegotiatedCipher.argtypes = [SSLContextRef, POINTER(SSLCipherSuite)] Security.SSLGetNegotiatedCipher.restype = OSStatus Security.SSLGetNegotiatedProtocolVersion.argtypes = [ SSLContextRef, POINTER(SSLProtocol), ] Security.SSLGetNegotiatedProtocolVersion.restype = OSStatus Security.SSLCopyPeerTrust.argtypes = [SSLContextRef, POINTER(SecTrustRef)] Security.SSLCopyPeerTrust.restype = OSStatus Security.SecTrustSetAnchorCertificates.argtypes = [SecTrustRef, CFArrayRef] Security.SecTrustSetAnchorCertificates.restype = OSStatus Security.SecTrustSetAnchorCertificatesOnly.argstypes = [SecTrustRef, Boolean] Security.SecTrustSetAnchorCertificatesOnly.restype = OSStatus Security.SecTrustEvaluate.argtypes = [SecTrustRef, POINTER(SecTrustResultType)] Security.SecTrustEvaluate.restype = OSStatus Security.SecTrustGetCertificateCount.argtypes = [SecTrustRef] Security.SecTrustGetCertificateCount.restype = CFIndex Security.SecTrustGetCertificateAtIndex.argtypes = [SecTrustRef, CFIndex] Security.SecTrustGetCertificateAtIndex.restype = SecCertificateRef Security.SSLCreateContext.argtypes = [ CFAllocatorRef, SSLProtocolSide, SSLConnectionType, ] Security.SSLCreateContext.restype = SSLContextRef Security.SSLSetSessionOption.argtypes = [SSLContextRef, SSLSessionOption, Boolean] Security.SSLSetSessionOption.restype = OSStatus Security.SSLSetProtocolVersionMin.argtypes = [SSLContextRef, SSLProtocol] Security.SSLSetProtocolVersionMin.restype = OSStatus Security.SSLSetProtocolVersionMax.argtypes = [SSLContextRef, SSLProtocol] Security.SSLSetProtocolVersionMax.restype = OSStatus try: Security.SSLSetALPNProtocols.argtypes = [SSLContextRef, CFArrayRef] Security.SSLSetALPNProtocols.restype = OSStatus except AttributeError: # Supported only in 10.12+ pass Security.SecCopyErrorMessageString.argtypes = [OSStatus, c_void_p] Security.SecCopyErrorMessageString.restype = CFStringRef Security.SSLReadFunc = SSLReadFunc Security.SSLWriteFunc = SSLWriteFunc Security.SSLContextRef = SSLContextRef Security.SSLProtocol = SSLProtocol Security.SSLCipherSuite = SSLCipherSuite Security.SecIdentityRef = SecIdentityRef Security.SecKeychainRef = SecKeychainRef Security.SecTrustRef = SecTrustRef Security.SecTrustResultType = SecTrustResultType Security.SecExternalFormat = SecExternalFormat Security.OSStatus = OSStatus Security.kSecImportExportPassphrase = CFStringRef.in_dll( Security, "kSecImportExportPassphrase" ) Security.kSecImportItemIdentity = CFStringRef.in_dll( Security, "kSecImportItemIdentity" ) # CoreFoundation time! CoreFoundation.CFRetain.argtypes = [CFTypeRef] CoreFoundation.CFRetain.restype = CFTypeRef CoreFoundation.CFRelease.argtypes = [CFTypeRef] CoreFoundation.CFRelease.restype = None CoreFoundation.CFGetTypeID.argtypes = [CFTypeRef] CoreFoundation.CFGetTypeID.restype = CFTypeID CoreFoundation.CFStringCreateWithCString.argtypes = [ CFAllocatorRef, c_char_p, CFStringEncoding, ] CoreFoundation.CFStringCreateWithCString.restype = CFStringRef CoreFoundation.CFStringGetCStringPtr.argtypes = [CFStringRef, CFStringEncoding] CoreFoundation.CFStringGetCStringPtr.restype = c_char_p CoreFoundation.CFStringGetCString.argtypes = [ CFStringRef, c_char_p, CFIndex, CFStringEncoding, ] CoreFoundation.CFStringGetCString.restype = c_bool CoreFoundation.CFDataCreate.argtypes = [CFAllocatorRef, c_char_p, CFIndex] CoreFoundation.CFDataCreate.restype = CFDataRef CoreFoundation.CFDataGetLength.argtypes = [CFDataRef] CoreFoundation.CFDataGetLength.restype = CFIndex CoreFoundation.CFDataGetBytePtr.argtypes = [CFDataRef] CoreFoundation.CFDataGetBytePtr.restype = c_void_p CoreFoundation.CFDictionaryCreate.argtypes = [ CFAllocatorRef, POINTER(CFTypeRef), POINTER(CFTypeRef), CFIndex, CFDictionaryKeyCallBacks, CFDictionaryValueCallBacks, ] CoreFoundation.CFDictionaryCreate.restype = CFDictionaryRef CoreFoundation.CFDictionaryGetValue.argtypes = [CFDictionaryRef, CFTypeRef] CoreFoundation.CFDictionaryGetValue.restype = CFTypeRef CoreFoundation.CFArrayCreate.argtypes = [ CFAllocatorRef, POINTER(CFTypeRef), CFIndex, CFArrayCallBacks, ] CoreFoundation.CFArrayCreate.restype = CFArrayRef CoreFoundation.CFArrayCreateMutable.argtypes = [ CFAllocatorRef, CFIndex, CFArrayCallBacks, ] CoreFoundation.CFArrayCreateMutable.restype = CFMutableArrayRef CoreFoundation.CFArrayAppendValue.argtypes = [CFMutableArrayRef, c_void_p] CoreFoundation.CFArrayAppendValue.restype = None CoreFoundation.CFArrayGetCount.argtypes = [CFArrayRef] CoreFoundation.CFArrayGetCount.restype = CFIndex CoreFoundation.CFArrayGetValueAtIndex.argtypes = [CFArrayRef, CFIndex] CoreFoundation.CFArrayGetValueAtIndex.restype = c_void_p CoreFoundation.kCFAllocatorDefault = CFAllocatorRef.in_dll( CoreFoundation, "kCFAllocatorDefault" ) CoreFoundation.kCFTypeArrayCallBacks = c_void_p.in_dll( CoreFoundation, "kCFTypeArrayCallBacks" ) CoreFoundation.kCFTypeDictionaryKeyCallBacks = c_void_p.in_dll( CoreFoundation, "kCFTypeDictionaryKeyCallBacks" ) CoreFoundation.kCFTypeDictionaryValueCallBacks = c_void_p.in_dll( CoreFoundation, "kCFTypeDictionaryValueCallBacks" ) CoreFoundation.CFTypeRef = CFTypeRef CoreFoundation.CFArrayRef = CFArrayRef CoreFoundation.CFStringRef = CFStringRef CoreFoundation.CFDictionaryRef = CFDictionaryRef except (AttributeError): raise ImportError("Error initializing ctypes") class CFConst(object): """ A class object that acts as essentially a namespace for CoreFoundation constants. """ kCFStringEncodingUTF8 = CFStringEncoding(0x08000100) class SecurityConst(object): """ A class object that acts as essentially a namespace for Security constants. """ kSSLSessionOptionBreakOnServerAuth = 0 kSSLProtocol2 = 1 kSSLProtocol3 = 2 kTLSProtocol1 = 4 kTLSProtocol11 = 7 kTLSProtocol12 = 8 # SecureTransport does not support TLS 1.3 even if there's a constant for it kTLSProtocol13 = 10 kTLSProtocolMaxSupported = 999 kSSLClientSide = 1 kSSLStreamType = 0 kSecFormatPEMSequence = 10 kSecTrustResultInvalid = 0 kSecTrustResultProceed = 1 # This gap is present on purpose: this was kSecTrustResultConfirm, which # is deprecated. kSecTrustResultDeny = 3 kSecTrustResultUnspecified = 4 kSecTrustResultRecoverableTrustFailure = 5 kSecTrustResultFatalTrustFailure = 6 kSecTrustResultOtherError = 7 errSSLProtocol = -9800 errSSLWouldBlock = -9803 errSSLClosedGraceful = -9805 errSSLClosedNoNotify = -9816 errSSLClosedAbort = -9806 errSSLXCertChainInvalid = -9807 errSSLCrypto = -9809 errSSLInternal = -9810 errSSLCertExpired = -9814 errSSLCertNotYetValid = -9815 errSSLUnknownRootCert = -9812 errSSLNoRootCert = -9813 errSSLHostNameMismatch = -9843 errSSLPeerHandshakeFail = -9824 errSSLPeerUserCancelled = -9839 errSSLWeakPeerEphemeralDHKey = -9850 errSSLServerAuthCompleted = -9841 errSSLRecordOverflow = -9847 errSecVerifyFailed = -67808 errSecNoTrustSettings = -25263 errSecItemNotFound = -25300 errSecInvalidTrustSettings = -25262 # Cipher suites. We only pick the ones our default cipher string allows. # Source: https://developer.apple.com/documentation/security/1550981-ssl_cipher_suite_values TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384 = 0xC02C TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 = 0xC030 TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 = 0xC02B TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 = 0xC02F TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256 = 0xCCA9 TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 = 0xCCA8 TLS_DHE_RSA_WITH_AES_256_GCM_SHA384 = 0x009F TLS_DHE_RSA_WITH_AES_128_GCM_SHA256 = 0x009E TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384 = 0xC024 TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 = 0xC028 TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA = 0xC00A TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA = 0xC014 TLS_DHE_RSA_WITH_AES_256_CBC_SHA256 = 0x006B TLS_DHE_RSA_WITH_AES_256_CBC_SHA = 0x0039 TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256 = 0xC023 TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 = 0xC027 TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA = 0xC009 TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA = 0xC013 TLS_DHE_RSA_WITH_AES_128_CBC_SHA256 = 0x0067 TLS_DHE_RSA_WITH_AES_128_CBC_SHA = 0x0033 TLS_RSA_WITH_AES_256_GCM_SHA384 = 0x009D TLS_RSA_WITH_AES_128_GCM_SHA256 = 0x009C TLS_RSA_WITH_AES_256_CBC_SHA256 = 0x003D TLS_RSA_WITH_AES_128_CBC_SHA256 = 0x003C TLS_RSA_WITH_AES_256_CBC_SHA = 0x0035 TLS_RSA_WITH_AES_128_CBC_SHA = 0x002F TLS_AES_128_GCM_SHA256 = 0x1301 TLS_AES_256_GCM_SHA384 = 0x1302 TLS_AES_128_CCM_8_SHA256 = 0x1305 TLS_AES_128_CCM_SHA256 = 0x1304 ��contrib/_securetransport/low_level.py��0000644��00000033124�15027623470�0014161 0��ustar�00��""" Low-level helpers for the SecureTransport bindings. These are Python functions that are not directly related to the high-level APIs but are necessary to get them to work. They include a whole bunch of low-level CoreFoundation messing about and memory management. The concerns in this module are almost entirely about trying to avoid memory leaks and providing appropriate and useful assistance to the higher-level code. """ import base64 import ctypes import itertools import os import re import ssl import struct import tempfile from .bindings import CFConst, CoreFoundation, Security # This regular expression is used to grab PEM data out of a PEM bundle. _PEM_CERTS_RE = re.compile( b"-----BEGIN CERTIFICATE-----\n(.?)\n-----END CERTIFICATE-----", re.DOTALL ) def _cf_data_from_bytes(bytestring): """ Given a bytestring, create a CFData object from it. This CFData object must be CFReleased by the caller. """ return CoreFoundation.CFDataCreate( CoreFoundation.kCFAllocatorDefault, bytestring, len(bytestring) ) def _cf_dictionary_from_tuples(tuples): """ Given a list of Python tuples, create an associated CFDictionary. """ dictionary_size = len(tuples) # We need to get the dictionary keys and values out in the same order. keys = (t[0] for t in tuples) values = (t[1] for t in tuples) cf_keys = (CoreFoundation.CFTypeRef dictionary_size)(keys) cf_values = (CoreFoundation.CFTypeRef dictionary_size)(values) return CoreFoundation.CFDictionaryCreate( CoreFoundation.kCFAllocatorDefault, cf_keys, cf_values, dictionary_size, CoreFoundation.kCFTypeDictionaryKeyCallBacks, CoreFoundation.kCFTypeDictionaryValueCallBacks, ) def _cfstr(py_bstr): """ Given a Python binary data, create a CFString. The string must be CFReleased by the caller. """ c_str = ctypes.c_char_p(py_bstr) cf_str = CoreFoundation.CFStringCreateWithCString( CoreFoundation.kCFAllocatorDefault, c_str, CFConst.kCFStringEncodingUTF8, ) return cf_str def _create_cfstring_array(lst): """ Given a list of Python binary data, create an associated CFMutableArray. The array must be CFReleased by the caller. Raises an ssl.SSLError on failure. """ cf_arr = None try: cf_arr = CoreFoundation.CFArrayCreateMutable( CoreFoundation.kCFAllocatorDefault, 0, ctypes.byref(CoreFoundation.kCFTypeArrayCallBacks), ) if not cf_arr: raise MemoryError("Unable to allocate memory!") for item in lst: cf_str = _cfstr(item) if not cf_str: raise MemoryError("Unable to allocate memory!") try: CoreFoundation.CFArrayAppendValue(cf_arr, cf_str) finally: CoreFoundation.CFRelease(cf_str) except BaseException as e: if cf_arr: CoreFoundation.CFRelease(cf_arr) raise ssl.SSLError("Unable to allocate array: %s" % (e,)) return cf_arr def _cf_string_to_unicode(value): """ Creates a Unicode string from a CFString object. Used entirely for error reporting. Yes, it annoys me quite a lot that this function is this complex. """ value_as_void_p = ctypes.cast(value, ctypes.POINTER(ctypes.c_void_p)) string = CoreFoundation.CFStringGetCStringPtr( value_as_void_p, CFConst.kCFStringEncodingUTF8 ) if string is None: buffer = ctypes.create_string_buffer(1024) result = CoreFoundation.CFStringGetCString( value_as_void_p, buffer, 1024, CFConst.kCFStringEncodingUTF8 ) if not result: raise OSError("Error copying C string from CFStringRef") string = buffer.value if string is not None: string = string.decode("utf-8") return string def _assert_no_error(error, exception_class=None): """ Checks the return code and throws an exception if there is an error to report """ if error == 0: return cf_error_string = Security.SecCopyErrorMessageString(error, None) output = _cf_string_to_unicode(cf_error_string) CoreFoundation.CFRelease(cf_error_string) if output is None or output == u"": output = u"OSStatus %s" % error if exception_class is None: exception_class = ssl.SSLError raise exception_class(output) def _cert_array_from_pem(pem_bundle): """ Given a bundle of certs in PEM format, turns them into a CFArray of certs that can be used to validate a cert chain. """ # Normalize the PEM bundle's line endings. pem_bundle = pem_bundle.replace(b"\r\n", b"\n") der_certs = [ base64.b64decode(match.group(1)) for match in _PEM_CERTS_RE.finditer(pem_bundle) ] if not der_certs: raise ssl.SSLError("No root certificates specified") cert_array = CoreFoundation.CFArrayCreateMutable( CoreFoundation.kCFAllocatorDefault, 0, ctypes.byref(CoreFoundation.kCFTypeArrayCallBacks), ) if not cert_array: raise ssl.SSLError("Unable to allocate memory!") try: for der_bytes in der_certs: certdata = _cf_data_from_bytes(der_bytes) if not certdata: raise ssl.SSLError("Unable to allocate memory!") cert = Security.SecCertificateCreateWithData( CoreFoundation.kCFAllocatorDefault, certdata ) CoreFoundation.CFRelease(certdata) if not cert: raise ssl.SSLError("Unable to build cert object!") CoreFoundation.CFArrayAppendValue(cert_array, cert) CoreFoundation.CFRelease(cert) except Exception: # We need to free the array before the exception bubbles further. # We only want to do that if an error occurs: otherwise, the caller # should free. CoreFoundation.CFRelease(cert_array) return cert_array def _is_cert(item): """ Returns True if a given CFTypeRef is a certificate. """ expected = Security.SecCertificateGetTypeID() return CoreFoundation.CFGetTypeID(item) == expected def _is_identity(item): """ Returns True if a given CFTypeRef is an identity. """ expected = Security.SecIdentityGetTypeID() return CoreFoundation.CFGetTypeID(item) == expected def _temporary_keychain(): """ This function creates a temporary Mac keychain that we can use to work with credentials. This keychain uses a one-time password and a temporary file to store the data. We expect to have one keychain per socket. The returned SecKeychainRef must be freed by the caller, including calling SecKeychainDelete. Returns a tuple of the SecKeychainRef and the path to the temporary directory that contains it. """ # Unfortunately, SecKeychainCreate requires a path to a keychain. This # means we cannot use mkstemp to use a generic temporary file. Instead, # we're going to create a temporary directory and a filename to use there. # This filename will be 8 random bytes expanded into base64. We also need # some random bytes to password-protect the keychain we're creating, so we # ask for 40 random bytes. random_bytes = os.urandom(40) filename = base64.b16encode(random_bytes[:8]).decode("utf-8") password = base64.b16encode(random_bytes[8:]) # Must be valid UTF-8 tempdirectory = tempfile.mkdtemp() keychain_path = os.path.join(tempdirectory, filename).encode("utf-8") # We now want to create the keychain itself. keychain = Security.SecKeychainRef() status = Security.SecKeychainCreate( keychain_path, len(password), password, False, None, ctypes.byref(keychain) ) _assert_no_error(status) # Having created the keychain, we want to pass it off to the caller. return keychain, tempdirectory def _load_items_from_file(keychain, path): """ Given a single file, loads all the trust objects from it into arrays and the keychain. Returns a tuple of lists: the first list is a list of identities, the second a list of certs. """ certificates = [] identities = [] result_array = None with open(path, "rb") as f: raw_filedata = f.read() try: filedata = CoreFoundation.CFDataCreate( CoreFoundation.kCFAllocatorDefault, raw_filedata, len(raw_filedata) ) result_array = CoreFoundation.CFArrayRef() result = Security.SecItemImport( filedata, # cert data None, # Filename, leaving it out for now None, # What the type of the file is, we don't care None, # what's in the file, we don't care 0, # import flags None, # key params, can include passphrase in the future keychain, # The keychain to insert into ctypes.byref(result_array), # Results ) _assert_no_error(result) # A CFArray is not very useful to us as an intermediary # representation, so we are going to extract the objects we want # and then free the array. We don't need to keep hold of keys: the # keychain already has them! result_count = CoreFoundation.CFArrayGetCount(result_array) for index in range(result_count): item = CoreFoundation.CFArrayGetValueAtIndex(result_array, index) item = ctypes.cast(item, CoreFoundation.CFTypeRef) if _is_cert(item): CoreFoundation.CFRetain(item) certificates.append(item) elif _is_identity(item): CoreFoundation.CFRetain(item) identities.append(item) finally: if result_array: CoreFoundation.CFRelease(result_array) CoreFoundation.CFRelease(filedata) return (identities, certificates) def _load_client_cert_chain(keychain, paths): """ Load certificates and maybe keys from a number of files. Has the end goal of returning a CFArray containing one SecIdentityRef, and then zero or more SecCertificateRef objects, suitable for use as a client certificate trust chain. """ # Ok, the strategy. # # This relies on knowing that macOS will not give you a SecIdentityRef # unless you have imported a key into a keychain. This is a somewhat # artificial limitation of macOS (for example, it doesn't necessarily # affect iOS), but there is nothing inside Security.framework that lets you # get a SecIdentityRef without having a key in a keychain. # # So the policy here is we take all the files and iterate them in order. # Each one will use SecItemImport to have one or more objects loaded from # it. We will also point at a keychain that macOS can use to work with the # private key. # # Once we have all the objects, we'll check what we actually have. If we # already have a SecIdentityRef in hand, fab: we'll use that. Otherwise, # we'll take the first certificate (which we assume to be our leaf) and # ask the keychain to give us a SecIdentityRef with that cert's associated # key. # # We'll then return a CFArray containing the trust chain: one # SecIdentityRef and then zero-or-more SecCertificateRef objects. The # responsibility for freeing this CFArray will be with the caller. This # CFArray must remain alive for the entire connection, so in practice it # will be stored with a single SSLSocket, along with the reference to the # keychain. certificates = [] identities = [] # Filter out bad paths. paths = (path for path in paths if path) try: for file_path in paths: new_identities, new_certs = _load_items_from_file(keychain, file_path) identities.extend(new_identities) certificates.extend(new_certs) # Ok, we have everything. The question is: do we have an identity? If # not, we want to grab one from the first cert we have. if not identities: new_identity = Security.SecIdentityRef() status = Security.SecIdentityCreateWithCertificate( keychain, certificates[0], ctypes.byref(new_identity) ) _assert_no_error(status) identities.append(new_identity) # We now want to release the original certificate, as we no longer # need it. CoreFoundation.CFRelease(certificates.pop(0)) # We now need to build a new CFArray that holds the trust chain. trust_chain = CoreFoundation.CFArrayCreateMutable( CoreFoundation.kCFAllocatorDefault, 0, ctypes.byref(CoreFoundation.kCFTypeArrayCallBacks), ) for item in itertools.chain(identities, certificates): # ArrayAppendValue does a CFRetain on the item. That's fine, # because the finally block will release our other refs to them. CoreFoundation.CFArrayAppendValue(trust_chain, item) return trust_chain finally: for obj in itertools.chain(identities, certificates): CoreFoundation.CFRelease(obj) TLS_PROTOCOL_VERSIONS = { "SSLv2": (0, 2), "SSLv3": (3, 0), "TLSv1": (3, 1), "TLSv1.1": (3, 2), "TLSv1.2": (3, 3), } def _build_tls_unknown_ca_alert(version): """ Builds a TLS alert record for an unknown CA. """ ver_maj, ver_min = TLS_PROTOCOL_VERSIONS[version] severity_fatal = 0x02 description_unknown_ca = 0x30 msg = struct.pack(">BB", severity_fatal, description_unknown_ca) msg_len = len(msg) record_type_alert = 0x15 record = struct.pack(">BBBH", record_type_alert, ver_maj, ver_min, msg_len) + msg return record ��contrib/_securetransport/__init__.py��0000644��00000000000�15027623470�0013713 0��ustar�00��contrib/securetransport.py��0000644��00000103161�15027623470�0012031 0��ustar�00��""" SecureTranport support for urllib3 via ctypes. This makes platform-native TLS available to urllib3 users on macOS without the use of a compiler. This is an important feature because the Python Package Index is moving to become a TLSv1.2-or-higher server, and the default OpenSSL that ships with macOS is not capable of doing TLSv1.2. The only way to resolve this is to give macOS users an alternative solution to the problem, and that solution is to use SecureTransport. We use ctypes here because this solution must not require a compiler. That's because pip is not allowed to require a compiler either. This is not intended to be a seriously long-term solution to this problem. The hope is that PEP 543 will eventually solve this issue for us, at which point we can retire this contrib module. But in the short term, we need to solve the impending tire fire that is Python on Mac without this kind of contrib module. So...here we are. To use this module, simply import and inject it:: import urllib3.contrib.securetransport urllib3.contrib.securetransport.inject_into_urllib3() Happy TLSing! This code is a bastardised version of the code found in Will Bond's oscrypto library. An enormous debt is owed to him for blazing this trail for us. For that reason, this code should be considered to be covered both by urllib3's license and by oscrypto's: .. code-block:: Copyright (c) 2015-2016 Will Bond <will@wbond.net> Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. """ from __future__ import absolute_import import contextlib import ctypes import errno import os.path import shutil import socket import ssl import struct import threading import weakref import six from .. import util from ..util.ssl_ import PROTOCOL_TLS_CLIENT from ._securetransport.bindings import CoreFoundation, Security, SecurityConst from ._securetransport.low_level import ( _assert_no_error, _build_tls_unknown_ca_alert, _cert_array_from_pem, _create_cfstring_array, _load_client_cert_chain, _temporary_keychain, ) try: # Platform-specific: Python 2 from socket import _fileobject except ImportError: # Platform-specific: Python 3 _fileobject = None from ..packages.backports.makefile import backport_makefile __all__ = ["inject_into_urllib3", "extract_from_urllib3"] # SNI always works HAS_SNI = True orig_util_HAS_SNI = util.HAS_SNI orig_util_SSLContext = util.ssl_.SSLContext # This dictionary is used by the read callback to obtain a handle to the # calling wrapped socket. This is a pretty silly approach, but for now it'll # do. I feel like I should be able to smuggle a handle to the wrapped socket # directly in the SSLConnectionRef, but for now this approach will work I # guess. # # We need to lock around this structure for inserts, but we don't do it for # reads/writes in the callbacks. The reasoning here goes as follows: # # 1. It is not possible to call into the callbacks before the dictionary is # populated, so once in the callback the id must be in the dictionary. # 2. The callbacks don't mutate the dictionary, they only read from it, and # so cannot conflict with any of the insertions. # # This is good: if we had to lock in the callbacks we'd drastically slow down # the performance of this code. _connection_refs = weakref.WeakValueDictionary() _connection_ref_lock = threading.Lock() # Limit writes to 16kB. This is OpenSSL's limit, but we'll cargo-cult it over # for no better reason than we need a limit, and this one is right there. SSL_WRITE_BLOCKSIZE = 16384 # This is our equivalent of util.ssl_.DEFAULT_CIPHERS, but expanded out to # individual cipher suites. We need to do this because this is how # SecureTransport wants them. CIPHER_SUITES = [ SecurityConst.TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384, SecurityConst.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256, SecurityConst.TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384, SecurityConst.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256, SecurityConst.TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256, SecurityConst.TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256, SecurityConst.TLS_DHE_RSA_WITH_AES_256_GCM_SHA384, SecurityConst.TLS_DHE_RSA_WITH_AES_128_GCM_SHA256, SecurityConst.TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384, SecurityConst.TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA, SecurityConst.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256, SecurityConst.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA, SecurityConst.TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384, SecurityConst.TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA, SecurityConst.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256, SecurityConst.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA, SecurityConst.TLS_DHE_RSA_WITH_AES_256_CBC_SHA256, SecurityConst.TLS_DHE_RSA_WITH_AES_256_CBC_SHA, SecurityConst.TLS_DHE_RSA_WITH_AES_128_CBC_SHA256, SecurityConst.TLS_DHE_RSA_WITH_AES_128_CBC_SHA, SecurityConst.TLS_AES_256_GCM_SHA384, SecurityConst.TLS_AES_128_GCM_SHA256, SecurityConst.TLS_RSA_WITH_AES_256_GCM_SHA384, SecurityConst.TLS_RSA_WITH_AES_128_GCM_SHA256, SecurityConst.TLS_AES_128_CCM_8_SHA256, SecurityConst.TLS_AES_128_CCM_SHA256, SecurityConst.TLS_RSA_WITH_AES_256_CBC_SHA256, SecurityConst.TLS_RSA_WITH_AES_128_CBC_SHA256, SecurityConst.TLS_RSA_WITH_AES_256_CBC_SHA, SecurityConst.TLS_RSA_WITH_AES_128_CBC_SHA, ] # Basically this is simple: for PROTOCOL_SSLv23 we turn it into a low of # TLSv1 and a high of TLSv1.2. For everything else, we pin to that version. # TLSv1 to 1.2 are supported on macOS 10.8+ _protocol_to_min_max = { util.PROTOCOL_TLS: (SecurityConst.kTLSProtocol1, SecurityConst.kTLSProtocol12), PROTOCOL_TLS_CLIENT: (SecurityConst.kTLSProtocol1, SecurityConst.kTLSProtocol12), } if hasattr(ssl, "PROTOCOL_SSLv2"): _protocol_to_min_max[ssl.PROTOCOL_SSLv2] = ( SecurityConst.kSSLProtocol2, SecurityConst.kSSLProtocol2, ) if hasattr(ssl, "PROTOCOL_SSLv3"): _protocol_to_min_max[ssl.PROTOCOL_SSLv3] = ( SecurityConst.kSSLProtocol3, SecurityConst.kSSLProtocol3, ) if hasattr(ssl, "PROTOCOL_TLSv1"): _protocol_to_min_max[ssl.PROTOCOL_TLSv1] = ( SecurityConst.kTLSProtocol1, SecurityConst.kTLSProtocol1, ) if hasattr(ssl, "PROTOCOL_TLSv1_1"): _protocol_to_min_max[ssl.PROTOCOL_TLSv1_1] = ( SecurityConst.kTLSProtocol11, SecurityConst.kTLSProtocol11, ) if hasattr(ssl, "PROTOCOL_TLSv1_2"): _protocol_to_min_max[ssl.PROTOCOL_TLSv1_2] = ( SecurityConst.kTLSProtocol12, SecurityConst.kTLSProtocol12, ) def inject_into_urllib3(): """ Monkey-patch urllib3 with SecureTransport-backed SSL-support. """ util.SSLContext = SecureTransportContext util.ssl_.SSLContext = SecureTransportContext util.HAS_SNI = HAS_SNI util.ssl_.HAS_SNI = HAS_SNI util.IS_SECURETRANSPORT = True util.ssl_.IS_SECURETRANSPORT = True def extract_from_urllib3(): """ Undo monkey-patching by :func:`inject_into_urllib3`. """ util.SSLContext = orig_util_SSLContext util.ssl_.SSLContext = orig_util_SSLContext util.HAS_SNI = orig_util_HAS_SNI util.ssl_.HAS_SNI = orig_util_HAS_SNI util.IS_SECURETRANSPORT = False util.ssl_.IS_SECURETRANSPORT = False def _read_callback(connection_id, data_buffer, data_length_pointer): """ SecureTransport read callback. This is called by ST to request that data be returned from the socket. """ wrapped_socket = None try: wrapped_socket = _connection_refs.get(connection_id) if wrapped_socket is None: return SecurityConst.errSSLInternal base_socket = wrapped_socket.socket requested_length = data_length_pointer[0] timeout = wrapped_socket.gettimeout() error = None read_count = 0 try: while read_count < requested_length: if timeout is None or timeout >= 0: if not util.wait_for_read(base_socket, timeout): raise socket.error(errno.EAGAIN, "timed out") remaining = requested_length - read_count buffer = (ctypes.c_char * remaining).from_address( data_buffer + read_count ) chunk_size = base_socket.recv_into(buffer, remaining) read_count += chunk_size if not chunk_size: if not read_count: return SecurityConst.errSSLClosedGraceful break except (socket.error) as e: error = e.errno if error is not None and error != errno.EAGAIN: data_length_pointer[0] = read_count if error == errno.ECONNRESET or error == errno.EPIPE: return SecurityConst.errSSLClosedAbort raise data_length_pointer[0] = read_count if read_count != requested_length: return SecurityConst.errSSLWouldBlock return 0 except Exception as e: if wrapped_socket is not None: wrapped_socket._exception = e return SecurityConst.errSSLInternal def _write_callback(connection_id, data_buffer, data_length_pointer): """ SecureTransport write callback. This is called by ST to request that data actually be sent on the network. """ wrapped_socket = None try: wrapped_socket = _connection_refs.get(connection_id) if wrapped_socket is None: return SecurityConst.errSSLInternal base_socket = wrapped_socket.socket bytes_to_write = data_length_pointer[0] data = ctypes.string_at(data_buffer, bytes_to_write) timeout = wrapped_socket.gettimeout() error = None sent = 0 try: while sent < bytes_to_write: if timeout is None or timeout >= 0: if not util.wait_for_write(base_socket, timeout): raise socket.error(errno.EAGAIN, "timed out") chunk_sent = base_socket.send(data) sent += chunk_sent # This has some needless copying here, but I'm not sure there's # much value in optimising this data path. data = data[chunk_sent:] except (socket.error) as e: error = e.errno if error is not None and error != errno.EAGAIN: data_length_pointer[0] = sent if error == errno.ECONNRESET or error == errno.EPIPE: return SecurityConst.errSSLClosedAbort raise data_length_pointer[0] = sent if sent != bytes_to_write: return SecurityConst.errSSLWouldBlock return 0 except Exception as e: if wrapped_socket is not None: wrapped_socket._exception = e return SecurityConst.errSSLInternal # We need to keep these two objects references alive: if they get GC'd while # in use then SecureTransport could attempt to call a function that is in freed # memory. That would be...uh...bad. Yeah, that's the word. Bad. _read_callback_pointer = Security.SSLReadFunc(_read_callback) _write_callback_pointer = Security.SSLWriteFunc(_write_callback) class WrappedSocket(object): """ API-compatibility wrapper for Python's OpenSSL wrapped socket object. Note: _makefile_refs, _drop(), and _reuse() are needed for the garbage collector of PyPy. """ def __init__(self, socket): self.socket = socket self.context = None self._makefile_refs = 0 self._closed = False self._exception = None self._keychain = None self._keychain_dir = None self._client_cert_chain = None # We save off the previously-configured timeout and then set it to # zero. This is done because we use select and friends to handle the # timeouts, but if we leave the timeout set on the lower socket then # Python will "kindly" call select on that socket again for us. Avoid # that by forcing the timeout to zero. self._timeout = self.socket.gettimeout() self.socket.settimeout(0) @contextlib.contextmanager def _raise_on_error(self): """ A context manager that can be used to wrap calls that do I/O from SecureTransport. If any of the I/O callbacks hit an exception, this context manager will correctly propagate the exception after the fact. This avoids silently swallowing those exceptions. It also correctly forces the socket closed. """ self._exception = None # We explicitly don't catch around this yield because in the unlikely # event that an exception was hit in the block we don't want to swallow # it. yield if self._exception is not None: exception, self._exception = self._exception, None self.close() raise exception def _set_ciphers(self): """ Sets up the allowed ciphers. By default this matches the set in util.ssl_.DEFAULT_CIPHERS, at least as supported by macOS. This is done custom and doesn't allow changing at this time, mostly because parsing OpenSSL cipher strings is going to be a freaking nightmare. """ ciphers = (Security.SSLCipherSuite * len(CIPHER_SUITES))(CIPHER_SUITES) result = Security.SSLSetEnabledCiphers( self.context, ciphers, len(CIPHER_SUITES) ) _assert_no_error(result) def _set_alpn_protocols(self, protocols): """ Sets up the ALPN protocols on the context. """ if not protocols: return protocols_arr = _create_cfstring_array(protocols) try: result = Security.SSLSetALPNProtocols(self.context, protocols_arr) _assert_no_error(result) finally: CoreFoundation.CFRelease(protocols_arr) def _custom_validate(self, verify, trust_bundle): """ Called when we have set custom validation. We do this in two cases: first, when cert validation is entirely disabled; and second, when using a custom trust DB. Raises an SSLError if the connection is not trusted. """ # If we disabled cert validation, just say: cool. if not verify: return successes = ( SecurityConst.kSecTrustResultUnspecified, SecurityConst.kSecTrustResultProceed, ) try: trust_result = self._evaluate_trust(trust_bundle) if trust_result in successes: return reason = "error code: %d" % (trust_result,) except Exception as e: # Do not trust on error reason = "exception: %r" % (e,) # SecureTransport does not send an alert nor shuts down the connection. rec = _build_tls_unknown_ca_alert(self.version()) self.socket.sendall(rec) # close the connection immediately # l_onoff = 1, activate linger # l_linger = 0, linger for 0 seoncds opts = struct.pack("ii", 1, 0) self.socket.setsockopt(socket.SOL_SOCKET, socket.SO_LINGER, opts) self.close() raise ssl.SSLError("certificate verify failed, %s" % reason) def _evaluate_trust(self, trust_bundle): # We want data in memory, so load it up. if os.path.isfile(trust_bundle): with open(trust_bundle, "rb") as f: trust_bundle = f.read() cert_array = None trust = Security.SecTrustRef() try: # Get a CFArray that contains the certs we want. cert_array = _cert_array_from_pem(trust_bundle) # Ok, now the hard part. We want to get the SecTrustRef that ST has # created for this connection, shove our CAs into it, tell ST to # ignore everything else it knows, and then ask if it can build a # chain. This is a buuuunch of code. result = Security.SSLCopyPeerTrust(self.context, ctypes.byref(trust)) _assert_no_error(result) if not trust: raise ssl.SSLError("Failed to copy trust reference") result = Security.SecTrustSetAnchorCertificates(trust, cert_array) _assert_no_error(result) result = Security.SecTrustSetAnchorCertificatesOnly(trust, True) _assert_no_error(result) trust_result = Security.SecTrustResultType() result = Security.SecTrustEvaluate(trust, ctypes.byref(trust_result)) _assert_no_error(result) finally: if trust: CoreFoundation.CFRelease(trust) if cert_array is not None: CoreFoundation.CFRelease(cert_array) return trust_result.value def handshake( self, server_hostname, verify, trust_bundle, min_version, max_version, client_cert, client_key, client_key_passphrase, alpn_protocols, ): """ Actually performs the TLS handshake. This is run automatically by wrapped socket, and shouldn't be needed in user code. """ # First, we do the initial bits of connection setup. We need to create # a context, set its I/O funcs, and set the connection reference. self.context = Security.SSLCreateContext( None, SecurityConst.kSSLClientSide, SecurityConst.kSSLStreamType ) result = Security.SSLSetIOFuncs( self.context, _read_callback_pointer, _write_callback_pointer ) _assert_no_error(result) # Here we need to compute the handle to use. We do this by taking the # id of self modulo 231 - 1. If this is already in the dictionary, we # just keep incrementing by one until we find a free space. with _connection_ref_lock: handle = id(self) % 2147483647 while handle in _connection_refs: handle = (handle + 1) % 2147483647 _connection_refs[handle] = self result = Security.SSLSetConnection(self.context, handle) _assert_no_error(result) # If we have a server hostname, we should set that too. if server_hostname: if not isinstance(server_hostname, bytes): server_hostname = server_hostname.encode("utf-8") result = Security.SSLSetPeerDomainName( self.context, server_hostname, len(server_hostname) ) _assert_no_error(result) # Setup the ciphers. self._set_ciphers() # Setup the ALPN protocols. self._set_alpn_protocols(alpn_protocols) # Set the minimum and maximum TLS versions. result = Security.SSLSetProtocolVersionMin(self.context, min_version) _assert_no_error(result) result = Security.SSLSetProtocolVersionMax(self.context, max_version) _assert_no_error(result) # If there's a trust DB, we need to use it. We do that by telling # SecureTransport to break on server auth. We also do that if we don't # want to validate the certs at all: we just won't actually do any # authing in that case. if not verify or trust_bundle is not None: result = Security.SSLSetSessionOption( self.context, SecurityConst.kSSLSessionOptionBreakOnServerAuth, True ) _assert_no_error(result) # If there's a client cert, we need to use it. if client_cert: self._keychain, self._keychain_dir = _temporary_keychain() self._client_cert_chain = _load_client_cert_chain( self._keychain, client_cert, client_key ) result = Security.SSLSetCertificate(self.context, self._client_cert_chain) _assert_no_error(result) while True: with self._raise_on_error(): result = Security.SSLHandshake(self.context) if result == SecurityConst.errSSLWouldBlock: raise socket.timeout("handshake timed out") elif result == SecurityConst.errSSLServerAuthCompleted: self._custom_validate(verify, trust_bundle) continue else: _assert_no_error(result) break def fileno(self): return self.socket.fileno() # Copy-pasted from Python 3.5 source code def _decref_socketios(self): if self._makefile_refs > 0: self._makefile_refs -= 1 if self._closed: self.close() def recv(self, bufsiz): buffer = ctypes.create_string_buffer(bufsiz) bytes_read = self.recv_into(buffer, bufsiz) data = buffer[:bytes_read] return data def recv_into(self, buffer, nbytes=None): # Read short on EOF. if self._closed: return 0 if nbytes is None: nbytes = len(buffer) buffer = (ctypes.c_char nbytes).from_buffer(buffer) processed_bytes = ctypes.c_size_t(0) with self._raise_on_error(): result = Security.SSLRead( self.context, buffer, nbytes, ctypes.byref(processed_bytes) ) # There are some result codes that we want to treat as "not always # errors". Specifically, those are errSSLWouldBlock, # errSSLClosedGraceful, and errSSLClosedNoNotify. if result == SecurityConst.errSSLWouldBlock: # If we didn't process any bytes, then this was just a time out. # However, we can get errSSLWouldBlock in situations when we did # read some data, and in those cases we should just read "short" # and return. if processed_bytes.value == 0: # Timed out, no data read. raise socket.timeout("recv timed out") elif result in ( SecurityConst.errSSLClosedGraceful, SecurityConst.errSSLClosedNoNotify, ): # The remote peer has closed this connection. We should do so as # well. Note that we don't actually return here because in # principle this could actually be fired along with return data. # It's unlikely though. self.close() else: _assert_no_error(result) # Ok, we read and probably succeeded. We should return whatever data # was actually read. return processed_bytes.value def settimeout(self, timeout): self._timeout = timeout def gettimeout(self): return self._timeout def send(self, data): processed_bytes = ctypes.c_size_t(0) with self._raise_on_error(): result = Security.SSLWrite( self.context, data, len(data), ctypes.byref(processed_bytes) ) if result == SecurityConst.errSSLWouldBlock and processed_bytes.value == 0: # Timed out raise socket.timeout("send timed out") else: _assert_no_error(result) # We sent, and probably succeeded. Tell them how much we sent. return processed_bytes.value def sendall(self, data): total_sent = 0 while total_sent < len(data): sent = self.send(data[total_sent : total_sent + SSL_WRITE_BLOCKSIZE]) total_sent += sent def shutdown(self): with self._raise_on_error(): Security.SSLClose(self.context) def close(self): # TODO: should I do clean shutdown here? Do I have to? if self._makefile_refs < 1: self._closed = True if self.context: CoreFoundation.CFRelease(self.context) self.context = None if self._client_cert_chain: CoreFoundation.CFRelease(self._client_cert_chain) self._client_cert_chain = None if self._keychain: Security.SecKeychainDelete(self._keychain) CoreFoundation.CFRelease(self._keychain) shutil.rmtree(self._keychain_dir) self._keychain = self._keychain_dir = None return self.socket.close() else: self._makefile_refs -= 1 def getpeercert(self, binary_form=False): # Urgh, annoying. # # Here's how we do this: # # 1. Call SSLCopyPeerTrust to get hold of the trust object for this # connection. # 2. Call SecTrustGetCertificateAtIndex for index 0 to get the leaf. # 3. To get the CN, call SecCertificateCopyCommonName and process that # string so that it's of the appropriate type. # 4. To get the SAN, we need to do something a bit more complex: # a. Call SecCertificateCopyValues to get the data, requesting # kSecOIDSubjectAltName. # b. Mess about with this dictionary to try to get the SANs out. # # This is gross. Really gross. It's going to be a few hundred LoC extra # just to repeat something that SecureTransport can already do. So my # operating assumption at this time is that what we want to do is # instead to just flag to urllib3 that it shouldn't do its own hostname # validation when using SecureTransport. if not binary_form: raise ValueError("SecureTransport only supports dumping binary certs") trust = Security.SecTrustRef() certdata = None der_bytes = None try: # Grab the trust store. result = Security.SSLCopyPeerTrust(self.context, ctypes.byref(trust)) _assert_no_error(result) if not trust: # Probably we haven't done the handshake yet. No biggie. return None cert_count = Security.SecTrustGetCertificateCount(trust) if not cert_count: # Also a case that might happen if we haven't handshaked. # Handshook? Handshaken? return None leaf = Security.SecTrustGetCertificateAtIndex(trust, 0) assert leaf # Ok, now we want the DER bytes. certdata = Security.SecCertificateCopyData(leaf) assert certdata data_length = CoreFoundation.CFDataGetLength(certdata) data_buffer = CoreFoundation.CFDataGetBytePtr(certdata) der_bytes = ctypes.string_at(data_buffer, data_length) finally: if certdata: CoreFoundation.CFRelease(certdata) if trust: CoreFoundation.CFRelease(trust) return der_bytes def version(self): protocol = Security.SSLProtocol() result = Security.SSLGetNegotiatedProtocolVersion( self.context, ctypes.byref(protocol) ) _assert_no_error(result) if protocol.value == SecurityConst.kTLSProtocol13: raise ssl.SSLError("SecureTransport does not support TLS 1.3") elif protocol.value == SecurityConst.kTLSProtocol12: return "TLSv1.2" elif protocol.value == SecurityConst.kTLSProtocol11: return "TLSv1.1" elif protocol.value == SecurityConst.kTLSProtocol1: return "TLSv1" elif protocol.value == SecurityConst.kSSLProtocol3: return "SSLv3" elif protocol.value == SecurityConst.kSSLProtocol2: return "SSLv2" else: raise ssl.SSLError("Unknown TLS version: %r" % protocol) def _reuse(self): self._makefile_refs += 1 def _drop(self): if self._makefile_refs < 1: self.close() else: self._makefile_refs -= 1 if _fileobject: # Platform-specific: Python 2 def makefile(self, mode, bufsize=-1): self._makefile_refs += 1 return _fileobject(self, mode, bufsize, close=True) else: # Platform-specific: Python 3 def makefile(self, mode="r", buffering=None, args, kwargs): # We disable buffering with SecureTransport because it conflicts with # the buffering that ST does internally (see issue #1153 for more). buffering = 0 return backport_makefile(self, mode, buffering, args, *kwargs) WrappedSocket.makefile = makefile class SecureTransportContext(object): """ I am a wrapper class for the SecureTransport library, to translate the interface of the standard library ``SSLContext`` object to calls into SecureTransport. """ def __init__(self, protocol): self._min_version, self._max_version = _protocol_to_min_max[protocol] self._options = 0 self._verify = False self._trust_bundle = None self._client_cert = None self._client_key = None self._client_key_passphrase = None self._alpn_protocols = None @property def check_hostname(self): """ SecureTransport cannot have its hostname checking disabled. For more, see the comment on getpeercert() in this file. """ return True @check_hostname.setter def check_hostname(self, value): """ SecureTransport cannot have its hostname checking disabled. For more, see the comment on getpeercert() in this file. """ pass @property def options(self): # TODO: Well, crap. # # So this is the bit of the code that is the most likely to cause us # trouble. Essentially we need to enumerate all of the SSL options that # users might want to use and try to see if we can sensibly translate # them, or whether we should just ignore them. return self._options @options.setter def options(self, value): # TODO: Update in line with above. self._options = value @property def verify_mode(self): return ssl.CERT_REQUIRED if self._verify else ssl.CERT_NONE @verify_mode.setter def verify_mode(self, value): self._verify = True if value == ssl.CERT_REQUIRED else False def set_default_verify_paths(self): # So, this has to do something a bit weird. Specifically, what it does # is nothing. # # This means that, if we had previously had load_verify_locations # called, this does not undo that. We need to do that because it turns # out that the rest of the urllib3 code will attempt to load the # default verify paths if it hasn't been told about any paths, even if # the context itself was sometime earlier. We resolve that by just # ignoring it. pass def load_default_certs(self): return self.set_default_verify_paths() def set_ciphers(self, ciphers): # For now, we just require the default cipher string. if ciphers != util.ssl_.DEFAULT_CIPHERS: raise ValueError("SecureTransport doesn't support custom cipher strings") def load_verify_locations(self, cafile=None, capath=None, cadata=None): # OK, we only really support cadata and cafile. if capath is not None: raise ValueError("SecureTransport does not support cert directories") # Raise if cafile does not exist. if cafile is not None: with open(cafile): pass self._trust_bundle = cafile or cadata def load_cert_chain(self, certfile, keyfile=None, password=None): self._client_cert = certfile self._client_key = keyfile self._client_cert_passphrase = password def set_alpn_protocols(self, protocols): """ Sets the ALPN protocols that will later be set on the context. Raises a NotImplementedError if ALPN is not supported. """ if not hasattr(Security, "SSLSetALPNProtocols"): raise NotImplementedError( "SecureTransport supports ALPN only in macOS 10.12+" ) self._alpn_protocols = [six.ensure_binary(p) for p in protocols] def wrap_socket( self, sock, server_side=False, do_handshake_on_connect=True, suppress_ragged_eofs=True, server_hostname=None, ): # So, what do we do here? Firstly, we assert some properties. This is a # stripped down shim, so there is some functionality we don't support. # See PEP 543 for the real deal. assert not server_side assert do_handshake_on_connect assert suppress_ragged_eofs # Ok, we're good to go. Now we want to create the wrapped socket object # and store it in the appropriate place. wrapped_socket = WrappedSocket(sock) # Now we can handshake wrapped_socket.handshake( server_hostname, self._verify, self._trust_bundle, self._min_version, self._max_version, self._client_cert, self._client_key, self._client_key_passphrase, self._alpn_protocols, ) return wrapped_socket ��contrib/socks.py��0000644��00000015671�15027623470�0007720 0��ustar�00��# -- coding: utf-8 -- """ This module contains provisional support for SOCKS proxies from within urllib3. This module supports SOCKS4, SOCKS4A (an extension of SOCKS4), and SOCKS5. To enable its functionality, either install PySocks or install this module with the ``socks`` extra. The SOCKS implementation supports the full range of urllib3 features. It also supports the following SOCKS features: - SOCKS4A (``proxy_url='socks4a://...``) - SOCKS4 (``proxy_url='socks4://...``) - SOCKS5 with remote DNS (``proxy_url='socks5h://...``) - SOCKS5 with local DNS (``proxy_url='socks5://...``) - Usernames and passwords for the SOCKS proxy .. note:: It is recommended to use ``socks5h://`` or ``socks4a://`` schemes in your ``proxy_url`` to ensure that DNS resolution is done from the remote server instead of client-side when connecting to a domain name. SOCKS4 supports IPv4 and domain names with the SOCKS4A extension. SOCKS5 supports IPv4, IPv6, and domain names. When connecting to a SOCKS4 proxy the ``username`` portion of the ``proxy_url`` will be sent as the ``userid`` section of the SOCKS request: .. code-block:: python proxy_url="socks4a://<userid>@proxy-host" When connecting to a SOCKS5 proxy the ``username`` and ``password`` portion of the ``proxy_url`` will be sent as the username/password to authenticate with the proxy: .. code-block:: python proxy_url="socks5h://<username>:<password>@proxy-host" """ from __future__ import absolute_import try: import socks except ImportError: import warnings from ..exceptions import DependencyWarning warnings.warn( ( "SOCKS support in urllib3 requires the installation of optional " "dependencies: specifically, PySocks. For more information, see " "https://urllib3.readthedocs.io/en/latest/contrib.html#socks-proxies" ), DependencyWarning, ) raise from socket import error as SocketError from socket import timeout as SocketTimeout from ..connection import HTTPConnection, HTTPSConnection from ..connectionpool import HTTPConnectionPool, HTTPSConnectionPool from ..exceptions import ConnectTimeoutError, NewConnectionError from ..poolmanager import PoolManager from ..util.url import parse_url try: import ssl except ImportError: ssl = None class SOCKSConnection(HTTPConnection): """ A plain-text HTTP connection that connects via a SOCKS proxy. """ def __init__(self, args, *kwargs): self._socks_options = kwargs.pop("_socks_options") super(SOCKSConnection, self).__init__(args, kwargs) def _new_conn(self): """ Establish a new connection via the SOCKS proxy. """ extra_kw = {} if self.source_address: extra_kw["source_address"] = self.source_address if self.socket_options: extra_kw["socket_options"] = self.socket_options try: conn = socks.create_connection( (self.host, self.port), proxy_type=self._socks_options["socks_version"], proxy_addr=self._socks_options["proxy_host"], proxy_port=self._socks_options["proxy_port"], proxy_username=self._socks_options["username"], proxy_password=self._socks_options["password"], proxy_rdns=self._socks_options["rdns"], timeout=self.timeout, extra_kw ) except SocketTimeout: raise ConnectTimeoutError( self, "Connection to %s timed out. (connect timeout=%s)" % (self.host, self.timeout), ) except socks.ProxyError as e: # This is fragile as hell, but it seems to be the only way to raise # useful errors here. if e.socket_err: error = e.socket_err if isinstance(error, SocketTimeout): raise ConnectTimeoutError( self, "Connection to %s timed out. (connect timeout=%s)" % (self.host, self.timeout), ) else: raise NewConnectionError( self, "Failed to establish a new connection: %s" % error ) else: raise NewConnectionError( self, "Failed to establish a new connection: %s" % e ) except SocketError as e: # Defensive: PySocks should catch all these. raise NewConnectionError( self, "Failed to establish a new connection: %s" % e ) return conn # We don't need to duplicate the Verified/Unverified distinction from # urllib3/connection.py here because the HTTPSConnection will already have been # correctly set to either the Verified or Unverified form by that module. This # means the SOCKSHTTPSConnection will automatically be the correct type. class SOCKSHTTPSConnection(SOCKSConnection, HTTPSConnection): pass class SOCKSHTTPConnectionPool(HTTPConnectionPool): ConnectionCls = SOCKSConnection class SOCKSHTTPSConnectionPool(HTTPSConnectionPool): ConnectionCls = SOCKSHTTPSConnection class SOCKSProxyManager(PoolManager): """ A version of the urllib3 ProxyManager that routes connections via the defined SOCKS proxy. """ pool_classes_by_scheme = { "http": SOCKSHTTPConnectionPool, "https": SOCKSHTTPSConnectionPool, } def __init__( self, proxy_url, username=None, password=None, num_pools=10, headers=None, connection_pool_kw ): parsed = parse_url(proxy_url) if username is None and password is None and parsed.auth is not None: split = parsed.auth.split(":") if len(split) == 2: username, password = split if parsed.scheme == "socks5": socks_version = socks.PROXY_TYPE_SOCKS5 rdns = False elif parsed.scheme == "socks5h": socks_version = socks.PROXY_TYPE_SOCKS5 rdns = True elif parsed.scheme == "socks4": socks_version = socks.PROXY_TYPE_SOCKS4 rdns = False elif parsed.scheme == "socks4a": socks_version = socks.PROXY_TYPE_SOCKS4 rdns = True else: raise ValueError("Unable to determine SOCKS version from %s" % proxy_url) self.proxy_url = proxy_url socks_options = { "socks_version": socks_version, "proxy_host": parsed.host, "proxy_port": parsed.port, "username": username, "password": password, "rdns": rdns, } connection_pool_kw["_socks_options"] = socks_options super(SOCKSProxyManager, self).__init__( num_pools, headers, connection_pool_kw ) self.pool_classes_by_scheme = SOCKSProxyManager.pool_classes_by_scheme ��contrib/__init__.py��0000644��00000000000�15027623470�0010311 0��ustar�00��__init__.py��0000644��00000005313�15027623470�0006665 0��ustar�00��""" Python HTTP library with thread-safe connection pooling, file post support, user friendly, and more """ from __future__ import absolute_import # Set default logging handler to avoid "No handler found" warnings. import logging import warnings from logging import NullHandler from . import exceptions from ._version import __version__ from .connectionpool import HTTPConnectionPool, HTTPSConnectionPool, connection_from_url from .filepost import encode_multipart_formdata from .poolmanager import PoolManager, ProxyManager, proxy_from_url from .response import HTTPResponse from .util.request import make_headers from .util.retry import Retry from .util.timeout import Timeout from .util.url import get_host __author__ = "Andrey Petrov (andrey.petrov@shazow.net)" __license__ = "MIT" __version__ = __version__ __all__ = ( "HTTPConnectionPool", "HTTPSConnectionPool", "PoolManager", "ProxyManager", "HTTPResponse", "Retry", "Timeout", "add_stderr_logger", "connection_from_url", "disable_warnings", "encode_multipart_formdata", "get_host", "make_headers", "proxy_from_url", ) logging.getLogger(__name__).addHandler(NullHandler()) def add_stderr_logger(level=logging.DEBUG): """ Helper for quickly adding a StreamHandler to the logger. Useful for debugging. Returns the handler after adding it. """ # This method needs to be in this __init__.py to get the __name__ correct # even if urllib3 is vendored within another package. logger = logging.getLogger(__name__) handler = logging.StreamHandler() handler.setFormatter(logging.Formatter("%(asctime)s %(levelname)s %(message)s")) logger.addHandler(handler) logger.setLevel(level) logger.debug("Added a stderr logging handler to logger: %s", __name__) return handler # ... Clean up. del NullHandler # All warning filters must be appended unless you're really certain that they # shouldn't be: otherwise, it's very hard for users to use most Python # mechanisms to silence them. # SecurityWarning's always go off by default. warnings.simplefilter("always", exceptions.SecurityWarning, append=True) # SubjectAltNameWarning's should go off once per host warnings.simplefilter("default", exceptions.SubjectAltNameWarning, append=True) # InsecurePlatformWarning's don't vary between requests, so we keep it default. warnings.simplefilter("default", exceptions.InsecurePlatformWarning, append=True) # SNIMissingWarnings should go off only once. warnings.simplefilter("default", exceptions.SNIMissingWarning, append=True) def disable_warnings(category=exceptions.HTTPWarning): """ Helper for quickly disabling all urllib3 warnings. """ warnings.simplefilter("ignore", category) ��

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