mirror of
https://github.com/yt-dlp/yt-dlp.git
synced 2024-11-16 05:13:21 +00:00
406 lines
14 KiB
Python
406 lines
14 KiB
Python
import contextlib
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import functools
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import http.client
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import logging
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import re
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import socket
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import warnings
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from ..dependencies import brotli, requests, urllib3
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from ..utils import bug_reports_message, int_or_none, variadic
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from ..utils.networking import normalize_url
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if requests is None:
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raise ImportError('requests module is not installed')
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if urllib3 is None:
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raise ImportError('urllib3 module is not installed')
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urllib3_version = tuple(int_or_none(x, default=0) for x in urllib3.__version__.split('.'))
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if urllib3_version < (1, 26, 17):
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raise ImportError('Only urllib3 >= 1.26.17 is supported')
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if requests.__build__ < 0x023100:
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raise ImportError('Only requests >= 2.31.0 is supported')
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import requests.adapters
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import requests.utils
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import urllib3.connection
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import urllib3.exceptions
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from ._helper import (
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InstanceStoreMixin,
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add_accept_encoding_header,
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create_connection,
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create_socks_proxy_socket,
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get_redirect_method,
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make_socks_proxy_opts,
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select_proxy,
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)
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from .common import (
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Features,
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RequestHandler,
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Response,
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register_preference,
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register_rh,
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)
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from .exceptions import (
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CertificateVerifyError,
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HTTPError,
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IncompleteRead,
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ProxyError,
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RequestError,
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SSLError,
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TransportError,
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)
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from ..socks import ProxyError as SocksProxyError
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SUPPORTED_ENCODINGS = [
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'gzip', 'deflate'
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]
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if brotli is not None:
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SUPPORTED_ENCODINGS.append('br')
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"""
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Override urllib3's behavior to not convert lower-case percent-encoded characters
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to upper-case during url normalization process.
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RFC3986 defines that the lower or upper case percent-encoded hexidecimal characters are equivalent
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and normalizers should convert them to uppercase for consistency [1].
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However, some sites may have an incorrect implementation where they provide
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a percent-encoded url that is then compared case-sensitively.[2]
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While this is a very rare case, since urllib does not do this normalization step, it
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is best to avoid it in requests too for compatability reasons.
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1: https://tools.ietf.org/html/rfc3986#section-2.1
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2: https://github.com/streamlink/streamlink/pull/4003
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"""
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class Urllib3PercentREOverride:
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def __init__(self, r: re.Pattern):
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self.re = r
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# pass through all other attribute calls to the original re
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def __getattr__(self, item):
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return self.re.__getattribute__(item)
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def subn(self, repl, string, *args, **kwargs):
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return string, self.re.subn(repl, string, *args, **kwargs)[1]
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# urllib3 >= 1.25.8 uses subn:
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# https://github.com/urllib3/urllib3/commit/a2697e7c6b275f05879b60f593c5854a816489f0
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import urllib3.util.url # noqa: E305
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if hasattr(urllib3.util.url, 'PERCENT_RE'):
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urllib3.util.url.PERCENT_RE = Urllib3PercentREOverride(urllib3.util.url.PERCENT_RE)
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elif hasattr(urllib3.util.url, '_PERCENT_RE'): # urllib3 >= 2.0.0
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urllib3.util.url._PERCENT_RE = Urllib3PercentREOverride(urllib3.util.url._PERCENT_RE)
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else:
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warnings.warn('Failed to patch PERCENT_RE in urllib3 (does the attribute exist?)' + bug_reports_message())
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"""
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Workaround for issue in urllib.util.ssl_.py: ssl_wrap_context does not pass
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server_hostname to SSLContext.wrap_socket if server_hostname is an IP,
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however this is an issue because we set check_hostname to True in our SSLContext.
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Monkey-patching IS_SECURETRANSPORT forces ssl_wrap_context to pass server_hostname regardless.
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This has been fixed in urllib3 2.0+.
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See: https://github.com/urllib3/urllib3/issues/517
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"""
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if urllib3_version < (2, 0, 0):
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with contextlib.suppress():
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urllib3.util.IS_SECURETRANSPORT = urllib3.util.ssl_.IS_SECURETRANSPORT = True
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# Requests will not automatically handle no_proxy by default
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# due to buggy no_proxy handling with proxy dict [1].
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# 1. https://github.com/psf/requests/issues/5000
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requests.adapters.select_proxy = select_proxy
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class RequestsResponseAdapter(Response):
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def __init__(self, res: requests.models.Response):
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super().__init__(
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fp=res.raw, headers=res.headers, url=res.url,
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status=res.status_code, reason=res.reason)
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self._requests_response = res
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def read(self, amt: int = None):
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try:
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# Interact with urllib3 response directly.
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return self.fp.read(amt, decode_content=True)
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# See urllib3.response.HTTPResponse.read() for exceptions raised on read
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except urllib3.exceptions.SSLError as e:
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raise SSLError(cause=e) from e
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except urllib3.exceptions.ProtocolError as e:
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# IncompleteRead is always contained within ProtocolError
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# See urllib3.response.HTTPResponse._error_catcher()
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ir_err = next(
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(err for err in (e.__context__, e.__cause__, *variadic(e.args))
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if isinstance(err, http.client.IncompleteRead)), None)
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if ir_err is not None:
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# `urllib3.exceptions.IncompleteRead` is subclass of `http.client.IncompleteRead`
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# but uses an `int` for its `partial` property.
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partial = ir_err.partial if isinstance(ir_err.partial, int) else len(ir_err.partial)
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raise IncompleteRead(partial=partial, expected=ir_err.expected) from e
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raise TransportError(cause=e) from e
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except urllib3.exceptions.HTTPError as e:
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# catch-all for any other urllib3 response exceptions
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raise TransportError(cause=e) from e
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class RequestsHTTPAdapter(requests.adapters.HTTPAdapter):
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def __init__(self, ssl_context=None, proxy_ssl_context=None, source_address=None, **kwargs):
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self._pm_args = {}
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if ssl_context:
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self._pm_args['ssl_context'] = ssl_context
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if source_address:
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self._pm_args['source_address'] = (source_address, 0)
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self._proxy_ssl_context = proxy_ssl_context or ssl_context
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super().__init__(**kwargs)
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def init_poolmanager(self, *args, **kwargs):
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return super().init_poolmanager(*args, **kwargs, **self._pm_args)
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def proxy_manager_for(self, proxy, **proxy_kwargs):
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extra_kwargs = {}
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if not proxy.lower().startswith('socks') and self._proxy_ssl_context:
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extra_kwargs['proxy_ssl_context'] = self._proxy_ssl_context
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return super().proxy_manager_for(proxy, **proxy_kwargs, **self._pm_args, **extra_kwargs)
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def cert_verify(*args, **kwargs):
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# lean on SSLContext for cert verification
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pass
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class RequestsSession(requests.sessions.Session):
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"""
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Ensure unified redirect method handling with our urllib redirect handler.
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"""
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def rebuild_method(self, prepared_request, response):
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new_method = get_redirect_method(prepared_request.method, response.status_code)
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# HACK: requests removes headers/body on redirect unless code was a 307/308.
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if new_method == prepared_request.method:
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response._real_status_code = response.status_code
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response.status_code = 308
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prepared_request.method = new_method
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# Requests fails to resolve dot segments on absolute redirect locations
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# See: https://github.com/yt-dlp/yt-dlp/issues/9020
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prepared_request.url = normalize_url(prepared_request.url)
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def rebuild_auth(self, prepared_request, response):
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# HACK: undo status code change from rebuild_method, if applicable.
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# rebuild_auth runs after requests would remove headers/body based on status code
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if hasattr(response, '_real_status_code'):
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response.status_code = response._real_status_code
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del response._real_status_code
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return super().rebuild_auth(prepared_request, response)
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class Urllib3LoggingFilter(logging.Filter):
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def filter(self, record):
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# Ignore HTTP request messages since HTTPConnection prints those
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if record.msg == '%s://%s:%s "%s %s %s" %s %s':
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return False
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return True
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class Urllib3LoggingHandler(logging.Handler):
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"""Redirect urllib3 logs to our logger"""
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def __init__(self, logger, *args, **kwargs):
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super().__init__(*args, **kwargs)
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self._logger = logger
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def emit(self, record):
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try:
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msg = self.format(record)
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if record.levelno >= logging.ERROR:
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self._logger.error(msg)
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else:
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self._logger.stdout(msg)
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except Exception:
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self.handleError(record)
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@register_rh
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class RequestsRH(RequestHandler, InstanceStoreMixin):
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"""Requests RequestHandler
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https://github.com/psf/requests
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"""
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_SUPPORTED_URL_SCHEMES = ('http', 'https')
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_SUPPORTED_ENCODINGS = tuple(SUPPORTED_ENCODINGS)
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_SUPPORTED_PROXY_SCHEMES = ('http', 'https', 'socks4', 'socks4a', 'socks5', 'socks5h')
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_SUPPORTED_FEATURES = (Features.NO_PROXY, Features.ALL_PROXY)
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RH_NAME = 'requests'
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def __init__(self, *args, **kwargs):
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super().__init__(*args, **kwargs)
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# Forward urllib3 debug messages to our logger
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logger = logging.getLogger('urllib3')
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handler = Urllib3LoggingHandler(logger=self._logger)
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handler.setFormatter(logging.Formatter('requests: %(message)s'))
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handler.addFilter(Urllib3LoggingFilter())
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logger.addHandler(handler)
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# TODO: Use a logger filter to suppress pool reuse warning instead
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logger.setLevel(logging.ERROR)
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if self.verbose:
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# Setting this globally is not ideal, but is easier than hacking with urllib3.
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# It could technically be problematic for scripts embedding yt-dlp.
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# However, it is unlikely debug traffic is used in that context in a way this will cause problems.
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urllib3.connection.HTTPConnection.debuglevel = 1
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logger.setLevel(logging.DEBUG)
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# this is expected if we are using --no-check-certificate
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urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning)
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def close(self):
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self._clear_instances()
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def _check_extensions(self, extensions):
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super()._check_extensions(extensions)
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extensions.pop('cookiejar', None)
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extensions.pop('timeout', None)
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def _create_instance(self, cookiejar):
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session = RequestsSession()
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http_adapter = RequestsHTTPAdapter(
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ssl_context=self._make_sslcontext(),
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source_address=self.source_address,
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max_retries=urllib3.util.retry.Retry(False),
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)
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session.adapters.clear()
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session.headers = requests.models.CaseInsensitiveDict({'Connection': 'keep-alive'})
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session.mount('https://', http_adapter)
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session.mount('http://', http_adapter)
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session.cookies = cookiejar
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session.trust_env = False # no need, we already load proxies from env
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return session
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def _send(self, request):
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headers = self._merge_headers(request.headers)
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add_accept_encoding_header(headers, SUPPORTED_ENCODINGS)
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max_redirects_exceeded = False
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session = self._get_instance(
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cookiejar=request.extensions.get('cookiejar') or self.cookiejar)
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try:
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requests_res = session.request(
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method=request.method,
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url=request.url,
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data=request.data,
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headers=headers,
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timeout=float(request.extensions.get('timeout') or self.timeout),
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proxies=request.proxies or self.proxies,
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allow_redirects=True,
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stream=True
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)
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except requests.exceptions.TooManyRedirects as e:
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max_redirects_exceeded = True
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requests_res = e.response
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except requests.exceptions.SSLError as e:
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if 'CERTIFICATE_VERIFY_FAILED' in str(e):
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raise CertificateVerifyError(cause=e) from e
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raise SSLError(cause=e) from e
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except requests.exceptions.ProxyError as e:
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raise ProxyError(cause=e) from e
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except (requests.exceptions.ConnectionError, requests.exceptions.Timeout) as e:
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raise TransportError(cause=e) from e
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except urllib3.exceptions.HTTPError as e:
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# Catch any urllib3 exceptions that may leak through
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raise TransportError(cause=e) from e
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except requests.exceptions.RequestException as e:
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# Miscellaneous Requests exceptions. May not necessary be network related e.g. InvalidURL
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raise RequestError(cause=e) from e
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res = RequestsResponseAdapter(requests_res)
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if not 200 <= res.status < 300:
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raise HTTPError(res, redirect_loop=max_redirects_exceeded)
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return res
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@register_preference(RequestsRH)
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def requests_preference(rh, request):
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return 100
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# Use our socks proxy implementation with requests to avoid an extra dependency.
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class SocksHTTPConnection(urllib3.connection.HTTPConnection):
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def __init__(self, _socks_options, *args, **kwargs): # must use _socks_options to pass PoolKey checks
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self._proxy_args = _socks_options
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super().__init__(*args, **kwargs)
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def _new_conn(self):
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try:
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return create_connection(
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address=(self._proxy_args['addr'], self._proxy_args['port']),
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timeout=self.timeout,
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source_address=self.source_address,
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_create_socket_func=functools.partial(
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create_socks_proxy_socket, (self.host, self.port), self._proxy_args))
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except (socket.timeout, TimeoutError) as e:
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raise urllib3.exceptions.ConnectTimeoutError(
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self, f'Connection to {self.host} timed out. (connect timeout={self.timeout})') from e
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except SocksProxyError as e:
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raise urllib3.exceptions.ProxyError(str(e), e) from e
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except OSError as e:
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raise urllib3.exceptions.NewConnectionError(
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self, f'Failed to establish a new connection: {e}') from e
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class SocksHTTPSConnection(SocksHTTPConnection, urllib3.connection.HTTPSConnection):
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pass
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class SocksHTTPConnectionPool(urllib3.HTTPConnectionPool):
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ConnectionCls = SocksHTTPConnection
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class SocksHTTPSConnectionPool(urllib3.HTTPSConnectionPool):
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ConnectionCls = SocksHTTPSConnection
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class SocksProxyManager(urllib3.PoolManager):
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def __init__(self, socks_proxy, username=None, password=None, num_pools=10, headers=None, **connection_pool_kw):
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connection_pool_kw['_socks_options'] = make_socks_proxy_opts(socks_proxy)
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super().__init__(num_pools, headers, **connection_pool_kw)
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self.pool_classes_by_scheme = {
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'http': SocksHTTPConnectionPool,
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'https': SocksHTTPSConnectionPool
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}
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requests.adapters.SOCKSProxyManager = SocksProxyManager
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