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yt-dlp/yt_dlp/networking/_requests.py

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from __future__ import annotations
import contextlib
import functools
import http.client
import logging
import re
import socket
import warnings
from ..dependencies import brotli, requests, urllib3
from ..utils import bug_reports_message, int_or_none, variadic
from ..utils.networking import normalize_url
if requests is None:
raise ImportError('requests module is not installed')
if urllib3 is None:
raise ImportError('urllib3 module is not installed')
urllib3_version = tuple(int_or_none(x, default=0) for x in urllib3.__version__.split('.'))
if urllib3_version < (1, 26, 17):
raise ImportError('Only urllib3 >= 1.26.17 is supported')
if requests.__build__ < 0x023202:
raise ImportError('Only requests >= 2.32.2 is supported')
import requests.adapters
import requests.utils
import urllib3.connection
import urllib3.exceptions
import urllib3.util
from ._helper import (
InstanceStoreMixin,
add_accept_encoding_header,
create_connection,
create_socks_proxy_socket,
get_redirect_method,
make_socks_proxy_opts,
select_proxy,
)
from .common import (
Features,
RequestHandler,
Response,
register_preference,
register_rh,
)
from .exceptions import (
CertificateVerifyError,
HTTPError,
IncompleteRead,
ProxyError,
RequestError,
SSLError,
TransportError,
)
from ..socks import ProxyError as SocksProxyError
SUPPORTED_ENCODINGS = [
'gzip', 'deflate',
]
if brotli is not None:
SUPPORTED_ENCODINGS.append('br')
'''
Override urllib3's behavior to not convert lower-case percent-encoded characters
to upper-case during url normalization process.
RFC3986 defines that the lower or upper case percent-encoded hexidecimal characters are equivalent
and normalizers should convert them to uppercase for consistency [1].
However, some sites may have an incorrect implementation where they provide
a percent-encoded url that is then compared case-sensitively.[2]
While this is a very rare case, since urllib does not do this normalization step, it
is best to avoid it in requests too for compatability reasons.
1: https://tools.ietf.org/html/rfc3986#section-2.1
2: https://github.com/streamlink/streamlink/pull/4003
'''
class Urllib3PercentREOverride:
def __init__(self, r: re.Pattern):
self.re = r
# pass through all other attribute calls to the original re
def __getattr__(self, item):
return self.re.__getattribute__(item)
def subn(self, repl, string, *args, **kwargs):
return string, self.re.subn(repl, string, *args, **kwargs)[1]
# urllib3 >= 1.25.8 uses subn:
# https://github.com/urllib3/urllib3/commit/a2697e7c6b275f05879b60f593c5854a816489f0
import urllib3.util.url
if hasattr(urllib3.util.url, 'PERCENT_RE'):
urllib3.util.url.PERCENT_RE = Urllib3PercentREOverride(urllib3.util.url.PERCENT_RE)
elif hasattr(urllib3.util.url, '_PERCENT_RE'): # urllib3 >= 2.0.0
urllib3.util.url._PERCENT_RE = Urllib3PercentREOverride(urllib3.util.url._PERCENT_RE)
else:
warnings.warn('Failed to patch PERCENT_RE in urllib3 (does the attribute exist?)' + bug_reports_message())
'''
Workaround for issue in urllib.util.ssl_.py: ssl_wrap_context does not pass
server_hostname to SSLContext.wrap_socket if server_hostname is an IP,
however this is an issue because we set check_hostname to True in our SSLContext.
Monkey-patching IS_SECURETRANSPORT forces ssl_wrap_context to pass server_hostname regardless.
This has been fixed in urllib3 2.0+.
See: https://github.com/urllib3/urllib3/issues/517
'''
if urllib3_version < (2, 0, 0):
with contextlib.suppress(Exception):
urllib3.util.IS_SECURETRANSPORT = urllib3.util.ssl_.IS_SECURETRANSPORT = True
# Requests will not automatically handle no_proxy by default
# due to buggy no_proxy handling with proxy dict [1].
# 1. https://github.com/psf/requests/issues/5000
requests.adapters.select_proxy = select_proxy
class RequestsResponseAdapter(Response):
def __init__(self, res: requests.models.Response):
super().__init__(
fp=res.raw, headers=res.headers, url=res.url,
status=res.status_code, reason=res.reason)
self._requests_response = res
def read(self, amt: int | None = None):
try:
# Interact with urllib3 response directly.
return self.fp.read(amt, decode_content=True)
# See urllib3.response.HTTPResponse.read() for exceptions raised on read
except urllib3.exceptions.SSLError as e:
raise SSLError(cause=e) from e
except urllib3.exceptions.ProtocolError as e:
# IncompleteRead is always contained within ProtocolError
# See urllib3.response.HTTPResponse._error_catcher()
ir_err = next(
(err for err in (e.__context__, e.__cause__, *variadic(e.args))
if isinstance(err, http.client.IncompleteRead)), None)
if ir_err is not None:
# `urllib3.exceptions.IncompleteRead` is subclass of `http.client.IncompleteRead`
# but uses an `int` for its `partial` property.
partial = ir_err.partial if isinstance(ir_err.partial, int) else len(ir_err.partial)
raise IncompleteRead(partial=partial, expected=ir_err.expected) from e
raise TransportError(cause=e) from e
except urllib3.exceptions.HTTPError as e:
# catch-all for any other urllib3 response exceptions
raise TransportError(cause=e) from e
class RequestsHTTPAdapter(requests.adapters.HTTPAdapter):
def __init__(self, ssl_context=None, proxy_ssl_context=None, source_address=None, **kwargs):
self._pm_args = {}
if ssl_context:
self._pm_args['ssl_context'] = ssl_context
if source_address:
self._pm_args['source_address'] = (source_address, 0)
self._proxy_ssl_context = proxy_ssl_context or ssl_context
super().__init__(**kwargs)
def init_poolmanager(self, *args, **kwargs):
return super().init_poolmanager(*args, **kwargs, **self._pm_args)
def proxy_manager_for(self, proxy, **proxy_kwargs):
extra_kwargs = {}
if not proxy.lower().startswith('socks') and self._proxy_ssl_context:
extra_kwargs['proxy_ssl_context'] = self._proxy_ssl_context
return super().proxy_manager_for(proxy, **proxy_kwargs, **self._pm_args, **extra_kwargs)
# Skip `requests` internal verification; we use our own SSLContext
def cert_verify(*args, **kwargs):
pass
# requests 2.32.2+: Reimplementation without `_urllib3_request_context`
def get_connection_with_tls_context(self, request, verify, proxies=None, cert=None):
url = urllib3.util.parse_url(request.url).url
manager = self.poolmanager
if proxy := select_proxy(url, proxies):
manager = self.proxy_manager_for(proxy)
return manager.connection_from_url(url)
class RequestsSession(requests.sessions.Session):
"""
Ensure unified redirect method handling with our urllib redirect handler.
"""
def rebuild_method(self, prepared_request, response):
new_method = get_redirect_method(prepared_request.method, response.status_code)
# HACK: requests removes headers/body on redirect unless code was a 307/308.
if new_method == prepared_request.method:
response._real_status_code = response.status_code
response.status_code = 308
prepared_request.method = new_method
# Requests fails to resolve dot segments on absolute redirect locations
# See: https://github.com/yt-dlp/yt-dlp/issues/9020
prepared_request.url = normalize_url(prepared_request.url)
def rebuild_auth(self, prepared_request, response):
# HACK: undo status code change from rebuild_method, if applicable.
# rebuild_auth runs after requests would remove headers/body based on status code
if hasattr(response, '_real_status_code'):
response.status_code = response._real_status_code
del response._real_status_code
return super().rebuild_auth(prepared_request, response)
class Urllib3LoggingFilter(logging.Filter):
def filter(self, record):
# Ignore HTTP request messages since HTTPConnection prints those
if record.msg == '%s://%s:%s "%s %s %s" %s %s':
return False
return True
class Urllib3LoggingHandler(logging.Handler):
"""Redirect urllib3 logs to our logger"""
def __init__(self, logger, *args, **kwargs):
super().__init__(*args, **kwargs)
self._logger = logger
def emit(self, record):
try:
msg = self.format(record)
if record.levelno >= logging.ERROR:
self._logger.error(msg)
else:
self._logger.stdout(msg)
except Exception:
self.handleError(record)
@register_rh
class RequestsRH(RequestHandler, InstanceStoreMixin):
"""Requests RequestHandler
https://github.com/psf/requests
"""
_SUPPORTED_URL_SCHEMES = ('http', 'https')
_SUPPORTED_ENCODINGS = tuple(SUPPORTED_ENCODINGS)
_SUPPORTED_PROXY_SCHEMES = ('http', 'https', 'socks4', 'socks4a', 'socks5', 'socks5h')
_SUPPORTED_FEATURES = (Features.NO_PROXY, Features.ALL_PROXY)
RH_NAME = 'requests'
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
# Forward urllib3 debug messages to our logger
logger = logging.getLogger('urllib3')
self.__logging_handler = Urllib3LoggingHandler(logger=self._logger)
self.__logging_handler.setFormatter(logging.Formatter('requests: %(message)s'))
self.__logging_handler.addFilter(Urllib3LoggingFilter())
logger.addHandler(self.__logging_handler)
# TODO: Use a logger filter to suppress pool reuse warning instead
logger.setLevel(logging.ERROR)
if self.verbose:
# Setting this globally is not ideal, but is easier than hacking with urllib3.
# It could technically be problematic for scripts embedding yt-dlp.
# However, it is unlikely debug traffic is used in that context in a way this will cause problems.
urllib3.connection.HTTPConnection.debuglevel = 1
logger.setLevel(logging.DEBUG)
# this is expected if we are using --no-check-certificate
urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning)
def close(self):
self._clear_instances()
# Remove the logging handler that contains a reference to our logger
# See: https://github.com/yt-dlp/yt-dlp/issues/8922
logging.getLogger('urllib3').removeHandler(self.__logging_handler)
def _check_extensions(self, extensions):
super()._check_extensions(extensions)
extensions.pop('cookiejar', None)
extensions.pop('timeout', None)
def _create_instance(self, cookiejar):
session = RequestsSession()
http_adapter = RequestsHTTPAdapter(
ssl_context=self._make_sslcontext(),
source_address=self.source_address,
max_retries=urllib3.util.retry.Retry(False),
)
session.adapters.clear()
session.headers = requests.models.CaseInsensitiveDict({'Connection': 'keep-alive'})
session.mount('https://', http_adapter)
session.mount('http://', http_adapter)
session.cookies = cookiejar
session.trust_env = False # no need, we already load proxies from env
return session
def _send(self, request):
headers = self._merge_headers(request.headers)
add_accept_encoding_header(headers, SUPPORTED_ENCODINGS)
max_redirects_exceeded = False
session = self._get_instance(cookiejar=self._get_cookiejar(request))
try:
requests_res = session.request(
method=request.method,
url=request.url,
data=request.data,
headers=headers,
timeout=self._calculate_timeout(request),
proxies=self._get_proxies(request),
allow_redirects=True,
stream=True,
)
except requests.exceptions.TooManyRedirects as e:
max_redirects_exceeded = True
requests_res = e.response
except requests.exceptions.SSLError as e:
if 'CERTIFICATE_VERIFY_FAILED' in str(e):
raise CertificateVerifyError(cause=e) from e
raise SSLError(cause=e) from e
except requests.exceptions.ProxyError as e:
raise ProxyError(cause=e) from e
except (requests.exceptions.ConnectionError, requests.exceptions.Timeout) as e:
raise TransportError(cause=e) from e
except urllib3.exceptions.HTTPError as e:
# Catch any urllib3 exceptions that may leak through
raise TransportError(cause=e) from e
except requests.exceptions.RequestException as e:
# Miscellaneous Requests exceptions. May not necessary be network related e.g. InvalidURL
raise RequestError(cause=e) from e
res = RequestsResponseAdapter(requests_res)
if not 200 <= res.status < 300:
raise HTTPError(res, redirect_loop=max_redirects_exceeded)
return res
@register_preference(RequestsRH)
def requests_preference(rh, request):
return 100
# Use our socks proxy implementation with requests to avoid an extra dependency.
class SocksHTTPConnection(urllib3.connection.HTTPConnection):
def __init__(self, _socks_options, *args, **kwargs): # must use _socks_options to pass PoolKey checks
self._proxy_args = _socks_options
super().__init__(*args, **kwargs)
def _new_conn(self):
try:
return create_connection(
address=(self._proxy_args['addr'], self._proxy_args['port']),
timeout=self.timeout,
source_address=self.source_address,
_create_socket_func=functools.partial(
create_socks_proxy_socket, (self.host, self.port), self._proxy_args))
except (socket.timeout, TimeoutError) as e:
raise urllib3.exceptions.ConnectTimeoutError(
self, f'Connection to {self.host} timed out. (connect timeout={self.timeout})') from e
except SocksProxyError as e:
raise urllib3.exceptions.ProxyError(str(e), e) from e
except OSError as e:
raise urllib3.exceptions.NewConnectionError(
self, f'Failed to establish a new connection: {e}') from e
class SocksHTTPSConnection(SocksHTTPConnection, urllib3.connection.HTTPSConnection):
pass
class SocksHTTPConnectionPool(urllib3.HTTPConnectionPool):
ConnectionCls = SocksHTTPConnection
class SocksHTTPSConnectionPool(urllib3.HTTPSConnectionPool):
ConnectionCls = SocksHTTPSConnection
class SocksProxyManager(urllib3.PoolManager):
def __init__(self, socks_proxy, username=None, password=None, num_pools=10, headers=None, **connection_pool_kw):
connection_pool_kw['_socks_options'] = make_socks_proxy_opts(socks_proxy)
super().__init__(num_pools, headers, **connection_pool_kw)
self.pool_classes_by_scheme = {
'http': SocksHTTPConnectionPool,
'https': SocksHTTPSConnectionPool,
}
requests.adapters.SOCKSProxyManager = SocksProxyManager