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[networking] Rewrite architecture (#2861)

Browse source 
New networking interface consists of a `RequestDirector` that directs
each `Request` to appropriate `RequestHandler` and returns the
`Response` or raises `RequestError`. The handlers define adapters to
transform its internal Request/Response/Errors to our interfaces.

User-facing changes:
- Fix issues with per request proxies on redirects for urllib
- Support for `ALL_PROXY` environment variable for proxy setting
- Support for `socks5h` proxy
   - Closes https://github.com/yt-dlp/yt-dlp/issues/6325, https://github.com/ytdl-org/youtube-dl/issues/22618, https://github.com/ytdl-org/youtube-dl/pull/28093
- Raise error when using `https` proxy instead of silently converting it to `http`

Authored by: coletdjnz
This commit is contained in:
coletdjnz 2023-07-15 15:55:23 +05:30 committed by pukkandan
parent c365dba843
commit 227bf1a33b
No known key found for this signature in database
GPG key ID: 7EEE9E1E817D0A39
16 changed files with 2586 additions and 474 deletions
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9
test/test_download.py
View file

@ -10,10 +10,7 @@
import collections
import hashlib
import http.client
import json
import socket
import urllib.error
from test.helper import (
assertGreaterEqual,
@ -29,6 +26,7 @@
import yt_dlp.YoutubeDL # isort: split
from yt_dlp.extractor import get_info_extractor
from yt_dlp.networking.exceptions import HTTPError, TransportError
from yt_dlp.utils import (
DownloadError,
ExtractorError,
@ -162,8 +160,7 @@ def try_rm_tcs_files(tcs=None):
force_generic_extractor=params.get('force_generic_extractor', False))
except (DownloadError, ExtractorError) as err:
# Check if the exception is not a network related one
if (err.exc_info[0] not in (urllib.error.URLError, socket.timeout, UnavailableVideoError, http.client.BadStatusLine)
or (err.exc_info[0] == urllib.error.HTTPError and err.exc_info[1].code == 503)):
if not isinstance(err.exc_info[1], (TransportError, UnavailableVideoError)) or (isinstance(err.exc_info[1], HTTPError) and err.exc_info[1].code == 503):
err.msg = f'{getattr(err, "msg", err)} ({tname})'
raise
@ -249,7 +246,7 @@ def try_rm_tcs_files(tcs=None):
# extractor returns full results even with extract_flat
res_tcs = [{'info_dict': e} for e in res_dict['entries']]
try_rm_tcs_files(res_tcs)
ydl.close()
return test_template

1351
test/test_networking.py
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239
test/test_networking_utils.py Normal file
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@ -0,0 +1,239 @@
#!/usr/bin/env python3
# Allow direct execution
import os
import sys
import pytest
sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
import io
import platform
import random
import ssl
import urllib.error
from yt_dlp.cookies import YoutubeDLCookieJar
from yt_dlp.dependencies import certifi
from yt_dlp.networking import Response
from yt_dlp.networking._helper import (
InstanceStoreMixin,
add_accept_encoding_header,
get_redirect_method,
make_socks_proxy_opts,
select_proxy,
ssl_load_certs,
)
from yt_dlp.networking.exceptions import (
HTTPError,
IncompleteRead,
_CompatHTTPError,
)
from yt_dlp.socks import ProxyType
from yt_dlp.utils.networking import HTTPHeaderDict
TEST_DIR = os.path.dirname(os.path.abspath(__file__))
class TestNetworkingUtils:
def test_select_proxy(self):
proxies = {
'all': 'socks5://example.com',
'http': 'http://example.com:1080',
'no': 'bypass.example.com,yt-dl.org'
}
assert select_proxy('https://example.com', proxies) == proxies['all']
assert select_proxy('http://example.com', proxies) == proxies['http']
assert select_proxy('http://bypass.example.com', proxies) is None
assert select_proxy('https://yt-dl.org', proxies) is None
@pytest.mark.parametrize('socks_proxy,expected', [
('socks5h://example.com', {
'proxytype': ProxyType.SOCKS5,
'addr': 'example.com',
'port': 1080,
'rdns': True,
'username': None,
'password': None
}),
('socks5://user:@example.com:5555', {
'proxytype': ProxyType.SOCKS5,
'addr': 'example.com',
'port': 5555,
'rdns': False,
'username': 'user',
'password': ''
}),
('socks4://u%40ser:pa%20ss@127.0.0.1:1080', {
'proxytype': ProxyType.SOCKS4,
'addr': '127.0.0.1',
'port': 1080,
'rdns': False,
'username': 'u@ser',
'password': 'pa ss'
}),
('socks4a://:pa%20ss@127.0.0.1', {
'proxytype': ProxyType.SOCKS4A,
'addr': '127.0.0.1',
'port': 1080,
'rdns': True,
'username': '',
'password': 'pa ss'
})
])
def test_make_socks_proxy_opts(self, socks_proxy, expected):
assert make_socks_proxy_opts(socks_proxy) == expected
def test_make_socks_proxy_unknown(self):
with pytest.raises(ValueError, match='Unknown SOCKS proxy version: socks'):
make_socks_proxy_opts('socks://127.0.0.1')
@pytest.mark.skipif(not certifi, reason='certifi is not installed')
def test_load_certifi(self):
context = ssl.SSLContext(ssl.PROTOCOL_TLS_CLIENT)
context2 = ssl.SSLContext(ssl.PROTOCOL_TLS_CLIENT)
ssl_load_certs(context, use_certifi=True)
context2.load_verify_locations(cafile=certifi.where())
assert context.get_ca_certs() == context2.get_ca_certs()
# Test load normal certs
# XXX: could there be a case where system certs are the same as certifi?
context3 = ssl.SSLContext(ssl.PROTOCOL_TLS_CLIENT)
ssl_load_certs(context3, use_certifi=False)
assert context3.get_ca_certs() != context.get_ca_certs()
@pytest.mark.parametrize('method,status,expected', [
('GET', 303, 'GET'),
('HEAD', 303, 'HEAD'),
('PUT', 303, 'GET'),
('POST', 301, 'GET'),
('HEAD', 301, 'HEAD'),
('POST', 302, 'GET'),
('HEAD', 302, 'HEAD'),
('PUT', 302, 'PUT'),
('POST', 308, 'POST'),
('POST', 307, 'POST'),
('HEAD', 308, 'HEAD'),
('HEAD', 307, 'HEAD'),
])
def test_get_redirect_method(self, method, status, expected):
assert get_redirect_method(method, status) == expected
@pytest.mark.parametrize('headers,supported_encodings,expected', [
({'Accept-Encoding': 'br'}, ['gzip', 'br'], {'Accept-Encoding': 'br'}),
({}, ['gzip', 'br'], {'Accept-Encoding': 'gzip, br'}),
({'Content-type': 'application/json'}, [], {'Content-type': 'application/json', 'Accept-Encoding': 'identity'}),
])
def test_add_accept_encoding_header(self, headers, supported_encodings, expected):
headers = HTTPHeaderDict(headers)
add_accept_encoding_header(headers, supported_encodings)
assert headers == HTTPHeaderDict(expected)
class TestInstanceStoreMixin:
class FakeInstanceStoreMixin(InstanceStoreMixin):
def _create_instance(self, **kwargs):
return random.randint(0, 1000000)
def _close_instance(self, instance):
pass
def test_mixin(self):
mixin = self.FakeInstanceStoreMixin()
assert mixin._get_instance(d={'a': 1, 'b': 2, 'c': {'d', 4}}) == mixin._get_instance(d={'a': 1, 'b': 2, 'c': {'d', 4}})
assert mixin._get_instance(d={'a': 1, 'b': 2, 'c': {'e', 4}}) != mixin._get_instance(d={'a': 1, 'b': 2, 'c': {'d', 4}})
assert mixin._get_instance(d={'a': 1, 'b': 2, 'c': {'d', 4}} != mixin._get_instance(d={'a': 1, 'b': 2, 'g': {'d', 4}}))
assert mixin._get_instance(d={'a': 1}, e=[1, 2, 3]) == mixin._get_instance(d={'a': 1}, e=[1, 2, 3])
assert mixin._get_instance(d={'a': 1}, e=[1, 2, 3]) != mixin._get_instance(d={'a': 1}, e=[1, 2, 3, 4])
cookiejar = YoutubeDLCookieJar()
assert mixin._get_instance(b=[1, 2], c=cookiejar) == mixin._get_instance(b=[1, 2], c=cookiejar)
assert mixin._get_instance(b=[1, 2], c=cookiejar) != mixin._get_instance(b=[1, 2], c=YoutubeDLCookieJar())
# Different order
assert mixin._get_instance(c=cookiejar, b=[1, 2]) == mixin._get_instance(b=[1, 2], c=cookiejar)
m = mixin._get_instance(t=1234)
assert mixin._get_instance(t=1234) == m
mixin._clear_instances()
assert mixin._get_instance(t=1234) != m
class TestNetworkingExceptions:
@staticmethod
def create_response(status):
return Response(fp=io.BytesIO(b'test'), url='http://example.com', headers={'tesT': 'test'}, status=status)
@pytest.mark.parametrize('http_error_class', [HTTPError, lambda r: _CompatHTTPError(HTTPError(r))])
def test_http_error(self, http_error_class):
response = self.create_response(403)
error = http_error_class(response)
assert error.status == 403
assert str(error) == error.msg == 'HTTP Error 403: Forbidden'
assert error.reason == response.reason
assert error.response is response
data = error.response.read()
assert data == b'test'
assert repr(error) == '<HTTPError 403: Forbidden>'
@pytest.mark.parametrize('http_error_class', [HTTPError, lambda *args, **kwargs: _CompatHTTPError(HTTPError(*args, **kwargs))])
def test_redirect_http_error(self, http_error_class):
response = self.create_response(301)
error = http_error_class(response, redirect_loop=True)
assert str(error) == error.msg == 'HTTP Error 301: Moved Permanently (redirect loop detected)'
assert error.reason == 'Moved Permanently'
def test_compat_http_error(self):
response = self.create_response(403)
error = _CompatHTTPError(HTTPError(response))
assert isinstance(error, HTTPError)
assert isinstance(error, urllib.error.HTTPError)
assert error.code == 403
assert error.getcode() == 403
assert error.hdrs is error.response.headers
assert error.info() is error.response.headers
assert error.headers is error.response.headers
assert error.filename == error.response.url
assert error.url == error.response.url
assert error.geturl() == error.response.url
# Passthrough file operations
assert error.read() == b'test'
assert not error.closed
# Technically Response operations are also passed through, which should not be used.
assert error.get_header('test') == 'test'
@pytest.mark.skipif(
platform.python_implementation() == 'PyPy', reason='garbage collector works differently in pypy')
def test_compat_http_error_autoclose(self):
# Compat HTTPError should not autoclose response
response = self.create_response(403)
_CompatHTTPError(HTTPError(response))
assert not response.closed
def test_incomplete_read_error(self):
error = IncompleteRead(b'test', 3, cause='test')
assert isinstance(error, IncompleteRead)
assert repr(error) == '<IncompleteRead: 4 bytes read, 3 more expected>'
assert str(error) == error.msg == '4 bytes read, 3 more expected'
assert error.partial == b'test'
assert error.expected == 3
assert error.cause == 'test'
error = IncompleteRead(b'aaa')
assert repr(error) == '<IncompleteRead: 3 bytes read>'
assert str(error) == '3 bytes read'

46
test/test_utils.py
View file

@ -51,6 +51,7 @@
escape_url,
expand_path,
extract_attributes,
extract_basic_auth,
find_xpath_attr,
fix_xml_ampersands,
float_or_none,
@ -103,7 +104,6 @@
sanitize_filename,
sanitize_path,
sanitize_url,
sanitized_Request,
shell_quote,
smuggle_url,
str_or_none,
@ -132,6 +132,7 @@
xpath_text,
xpath_with_ns,
)
from yt_dlp.utils.networking import HTTPHeaderDict
class TestUtil(unittest.TestCase):
@ -2315,14 +2316,43 @@ def test_traverse_obj(self):
self.assertEqual(traverse_obj(mobj, lambda k, _: k in (0, 'group')), ['0123', '3'],
msg='function on a `re.Match` should give group name as well')
def test_http_header_dict(self):
headers = HTTPHeaderDict()
headers['ytdl-test'] = 1
self.assertEqual(list(headers.items()), [('Ytdl-Test', '1')])
headers['Ytdl-test'] = '2'
self.assertEqual(list(headers.items()), [('Ytdl-Test', '2')])
self.assertTrue('ytDl-Test' in headers)
self.assertEqual(str(headers), str(dict(headers)))
self.assertEqual(repr(headers), str(dict(headers)))
headers.update({'X-dlp': 'data'})
self.assertEqual(set(headers.items()), {('Ytdl-Test', '2'), ('X-Dlp', 'data')})
self.assertEqual(dict(headers), {'Ytdl-Test': '2', 'X-Dlp': 'data'})
self.assertEqual(len(headers), 2)
self.assertEqual(headers.copy(), headers)
headers2 = HTTPHeaderDict({'X-dlp': 'data3'}, **headers, **{'X-dlp': 'data2'})
self.assertEqual(set(headers2.items()), {('Ytdl-Test', '2'), ('X-Dlp', 'data2')})
self.assertEqual(len(headers2), 2)
headers2.clear()
self.assertEqual(len(headers2), 0)
# ensure we prefer latter headers
headers3 = HTTPHeaderDict({'Ytdl-TeSt': 1}, {'Ytdl-test': 2})
self.assertEqual(set(headers3.items()), {('Ytdl-Test', '2')})
del headers3['ytdl-tesT']
self.assertEqual(dict(headers3), {})
headers4 = HTTPHeaderDict({'ytdl-test': 'data;'})
self.assertEqual(set(headers4.items()), {('Ytdl-Test', 'data;')})
def test_extract_basic_auth(self):
auth_header = lambda url: sanitized_Request(url).get_header('Authorization')
self.assertFalse(auth_header('http://foo.bar'))
self.assertFalse(auth_header('http://:foo.bar'))
self.assertEqual(auth_header('http://@foo.bar'), 'Basic Og==')
self.assertEqual(auth_header('http://:pass@foo.bar'), 'Basic OnBhc3M=')
self.assertEqual(auth_header('http://user:@foo.bar'), 'Basic dXNlcjo=')
self.assertEqual(auth_header('http://user:pass@foo.bar'), 'Basic dXNlcjpwYXNz')
assert extract_basic_auth('http://:foo.bar') == ('http://:foo.bar', None)
assert extract_basic_auth('http://foo.bar') == ('http://foo.bar', None)
assert extract_basic_auth('http://@foo.bar') == ('http://foo.bar', 'Basic Og==')
assert extract_basic_auth('http://:pass@foo.bar') == ('http://foo.bar', 'Basic OnBhc3M=')
assert extract_basic_auth('http://user:@foo.bar') == ('http://foo.bar', 'Basic dXNlcjo=')
assert extract_basic_auth('http://user:pass@foo.bar') == ('http://foo.bar', 'Basic dXNlcjpwYXNz')
if __name__ == '__main__':

175
yt_dlp/YoutubeDL.py
View file

@ -4,7 +4,6 @@
import datetime
import errno
import fileinput
import functools
import http.cookiejar
import io
import itertools
@ -25,8 +24,8 @@
import unicodedata
from .cache import Cache
from .compat import urllib # isort: split
from .compat import compat_os_name, compat_shlex_quote
from .compat import functools, urllib # isort: split
from .compat import compat_os_name, compat_shlex_quote, urllib_req_to_req
from .cookies import LenientSimpleCookie, load_cookies
from .downloader import FFmpegFD, get_suitable_downloader, shorten_protocol_name
from .downloader.rtmp import rtmpdump_version
@ -34,6 +33,15 @@
from .extractor.common import UnsupportedURLIE
from .extractor.openload import PhantomJSwrapper
from .minicurses import format_text
from .networking import Request, RequestDirector
from .networking.common import _REQUEST_HANDLERS
from .networking.exceptions import (
HTTPError,
NoSupportingHandlers,
RequestError,
SSLError,
_CompatHTTPError,
)
from .plugins import directories as plugin_directories
from .postprocessor import _PLUGIN_CLASSES as plugin_pps
from .postprocessor import (
@ -78,7 +86,6 @@
MaxDownloadsReached,
Namespace,
PagedList,
PerRequestProxyHandler,
PlaylistEntries,
Popen,
PostProcessingError,
@ -87,9 +94,6 @@
SameFileError,
UnavailableVideoError,
UserNotLive,
YoutubeDLCookieProcessor,
YoutubeDLHandler,
YoutubeDLRedirectHandler,
age_restricted,
args_to_str,
bug_reports_message,
@ -102,6 +106,7 @@
error_to_compat_str,
escapeHTML,
expand_path,
extract_basic_auth,
filter_dict,
float_or_none,
format_bytes,
@ -117,8 +122,6 @@
locked_file,
make_archive_id,
make_dir,
make_HTTPS_handler,
merge_headers,
network_exceptions,
number_of_digits,
orderedSet,
@ -132,7 +135,6 @@
sanitize_filename,
sanitize_path,
sanitize_url,
sanitized_Request,
std_headers,
str_or_none,
strftime_or_none,
@ -151,7 +153,12 @@
write_json_file,
write_string,
)
from .utils.networking import clean_headers
from .utils._utils import _YDLLogger
from .utils.networking import (
HTTPHeaderDict,
clean_headers,
clean_proxies,
)
from .version import CHANNEL, RELEASE_GIT_HEAD, VARIANT, __version__
if compat_os_name == 'nt':
@ -673,7 +680,9 @@ def process_color_policy(stream):
raise
self.params['compat_opts'] = set(self.params.get('compat_opts', ()))
self.params['http_headers'] = merge_headers(std_headers, self.params.get('http_headers', {}))
self.params['http_headers'] = HTTPHeaderDict(std_headers, self.params.get('http_headers'))
self._request_director = self.build_request_director(
sorted(_REQUEST_HANDLERS.values(), key=lambda rh: rh.RH_NAME.lower()))
if auto_init and auto_init != 'no_verbose_header':
self.print_debug_header()
@ -763,8 +772,6 @@ def check_deprecated(param, option, suggestion):
get_postprocessor(pp_def.pop('key'))(self, **pp_def),
when=when)
self._setup_opener()
def preload_download_archive(fn):
"""Preload the archive, if any is specified"""
archive = set()
@ -946,7 +953,11 @@ def save_cookies(self):
def __exit__(self, *args):
self.restore_console_title()
self.close()
def close(self):
self.save_cookies()
self._request_director.close()
def trouble(self, message=None, tb=None, is_error=True):
"""Determine action to take when a download problem appears.
@ -2468,7 +2479,7 @@ def restore_last_token(self):
return _build_selector_function(parsed_selector)
def _calc_headers(self, info_dict):
res = merge_headers(self.params['http_headers'], info_dict.get('http_headers') or {})
res = HTTPHeaderDict(self.params['http_headers'], info_dict.get('http_headers'))
clean_headers(res)
cookies = self.cookiejar.get_cookies_for_url(info_dict['url'])
if cookies:
@ -3943,13 +3954,8 @@ def get_encoding(stream):
join_nonempty(*get_package_info(m)) for m in available_dependencies.values()
})) or 'none'))
self._setup_opener()
proxy_map = {}
for handler in self._opener.handlers:
if hasattr(handler, 'proxies'):
proxy_map.update(handler.proxies)
write_debug(f'Proxy map: {proxy_map}')
write_debug(f'Proxy map: {self.proxies}')
# write_debug(f'Request Handlers: {", ".join(rh.RH_NAME for rh in self._request_director.handlers)}')
for plugin_type, plugins in {'Extractor': plugin_ies, 'Post-Processor': plugin_pps}.items():
display_list = ['%s%s' % (
klass.__name__, '' if klass.__name__ == name else f' as {name}')
@ -3977,53 +3983,21 @@ def get_encoding(stream):
'See https://yt-dl.org/update if you need help updating.' %
latest_version)
def _setup_opener(self):
if hasattr(self, '_opener'):
return
timeout_val = self.params.get('socket_timeout')
self._socket_timeout = 20 if timeout_val is None else float(timeout_val)
@functools.cached_property
def proxies(self):
"""Global proxy configuration"""
opts_proxy = self.params.get('proxy')
cookie_processor = YoutubeDLCookieProcessor(self.cookiejar)
if opts_proxy is not None:
if opts_proxy == '':
proxies = {}
else:
proxies = {'http': opts_proxy, 'https': opts_proxy}
opts_proxy = '__noproxy__'
proxies = {'all': opts_proxy}
else:
proxies = urllib.request.getproxies()
# Set HTTPS proxy to HTTP one if given (https://github.com/ytdl-org/youtube-dl/issues/805)
# compat. Set HTTPS_PROXY to __noproxy__ to revert
if 'http' in proxies and 'https' not in proxies:
proxies['https'] = proxies['http']
proxy_handler = PerRequestProxyHandler(proxies)
debuglevel = 1 if self.params.get('debug_printtraffic') else 0
https_handler = make_HTTPS_handler(self.params, debuglevel=debuglevel)
ydlh = YoutubeDLHandler(self.params, debuglevel=debuglevel)
redirect_handler = YoutubeDLRedirectHandler()
data_handler = urllib.request.DataHandler()
# When passing our own FileHandler instance, build_opener won't add the
# default FileHandler and allows us to disable the file protocol, which
# can be used for malicious purposes (see
# https://github.com/ytdl-org/youtube-dl/issues/8227)
file_handler = urllib.request.FileHandler()
if not self.params.get('enable_file_urls'):
def file_open(*args, **kwargs):
raise urllib.error.URLError(
'file:// URLs are explicitly disabled in yt-dlp for security reasons. '
'Use --enable-file-urls to enable at your own risk.')
file_handler.file_open = file_open
opener = urllib.request.build_opener(
proxy_handler, https_handler, cookie_processor, ydlh, redirect_handler, data_handler, file_handler)
# Delete the default user-agent header, which would otherwise apply in
# cases where our custom HTTP handler doesn't come into play
# (See https://github.com/ytdl-org/youtube-dl/issues/1309 for details)
opener.addheaders = []
self._opener = opener
return proxies
@functools.cached_property
def cookiejar(self):
@ -4031,11 +4005,84 @@ def cookiejar(self):
return load_cookies(
self.params.get('cookiefile'), self.params.get('cookiesfrombrowser'), self)
@property
def _opener(self):
"""
Get a urllib OpenerDirector from the Urllib handler (deprecated).
"""
self.deprecation_warning('YoutubeDL._opener() is deprecated, use YoutubeDL.urlopen()')
handler = self._request_director.handlers['Urllib']
return handler._get_instance(cookiejar=self.cookiejar, proxies=self.proxies)
def urlopen(self, req):
""" Start an HTTP download """
if isinstance(req, str):
req = sanitized_Request(req)
return self._opener.open(req, timeout=self._socket_timeout)
req = Request(req)
elif isinstance(req, urllib.request.Request):
req = urllib_req_to_req(req)
assert isinstance(req, Request)
# compat: Assume user:pass url params are basic auth
url, basic_auth_header = extract_basic_auth(req.url)
if basic_auth_header:
req.headers['Authorization'] = basic_auth_header
req.url = sanitize_url(url)
clean_proxies(proxies=req.proxies, headers=req.headers)
clean_headers(req.headers)
try:
return self._request_director.send(req)
except NoSupportingHandlers as e:
for ue in e.unsupported_errors:
if not (ue.handler and ue.msg):
continue
if ue.handler.RH_KEY == 'Urllib' and 'unsupported url scheme: "file"' in ue.msg.lower():
raise RequestError(
'file:// URLs are disabled by default in yt-dlp for security reasons. '
'Use --enable-file-urls to enable at your own risk.', cause=ue) from ue
raise
except SSLError as e:
if 'UNSAFE_LEGACY_RENEGOTIATION_DISABLED' in str(e):
raise RequestError('UNSAFE_LEGACY_RENEGOTIATION_DISABLED: Try using --legacy-server-connect', cause=e) from e
elif 'SSLV3_ALERT_HANDSHAKE_FAILURE' in str(e):
raise RequestError(
'SSLV3_ALERT_HANDSHAKE_FAILURE: The server may not support the current cipher list. '
'Try using --legacy-server-connect', cause=e) from e
raise
except HTTPError as e: # TODO: Remove in a future release
raise _CompatHTTPError(e) from e
def build_request_director(self, handlers):
logger = _YDLLogger(self)
headers = self.params.get('http_headers').copy()
proxies = self.proxies.copy()
clean_headers(headers)
clean_proxies(proxies, headers)
director = RequestDirector(logger=logger, verbose=self.params.get('debug_printtraffic'))
for handler in handlers:
director.add_handler(handler(
logger=logger,
headers=headers,
cookiejar=self.cookiejar,
proxies=proxies,
prefer_system_certs='no-certifi' in self.params['compat_opts'],
verify=not self.params.get('nocheckcertificate'),
**traverse_obj(self.params, {
'verbose': 'debug_printtraffic',
'source_address': 'source_address',
'timeout': 'socket_timeout',
'legacy_ssl_support': 'legacy_server_connect',
'enable_file_urls': 'enable_file_urls',
'client_cert': {
'client_certificate': 'client_certificate',
'client_certificate_key': 'client_certificate_key',
'client_certificate_password': 'client_certificate_password',
},
}),
))
return director
def encode(self, s):
if isinstance(s, bytes):
@ -4188,7 +4235,7 @@ def _write_thumbnails(self, label, info_dict, filename, thumb_filename_base=None
else:
self.to_screen(f'[info] Downloading {thumb_display_id} ...')
try:
uf = self.urlopen(sanitized_Request(t['url'], headers=t.get('http_headers', {})))
uf = self.urlopen(Request(t['url'], headers=t.get('http_headers', {})))
self.to_screen(f'[info] Writing {thumb_display_id} to: {thumb_filename}')
with open(encodeFilename(thumb_filename), 'wb') as thumbf:
shutil.copyfileobj(uf, thumbf)

10
yt_dlp/compat/__init__.py
View file

@ -70,3 +70,13 @@ def compat_expanduser(path):
return userhome + path[i:]
else:
compat_expanduser = os.path.expanduser
def urllib_req_to_req(urllib_request):
"""Convert urllib Request to a networking Request"""
from ..networking import Request
from ..utils.networking import HTTPHeaderDict
return Request(
urllib_request.get_full_url(), data=urllib_request.data, method=urllib_request.get_method(),
headers=HTTPHeaderDict(urllib_request.headers, urllib_request.unredirected_hdrs),
extensions={'timeout': urllib_request.timeout} if hasattr(urllib_request, 'timeout') else None)

24
yt_dlp/downloader/http.py
View file

@ -1,12 +1,10 @@
import http.client
import os
import random
import socket
import ssl
import time
import urllib.error
from .common import FileDownloader
from ..networking.exceptions import CertificateVerifyError, TransportError
from ..utils import (
ContentTooShortError,
RetryManager,
@ -21,14 +19,6 @@
write_xattr,
)
RESPONSE_READ_EXCEPTIONS = (
TimeoutError,
socket.timeout, # compat: py < 3.10
ConnectionError,
ssl.SSLError,
http.client.HTTPException
)
class HttpFD(FileDownloader):
def real_download(self, filename, info_dict):
@ -196,13 +186,9 @@ def establish_connection():
# Unexpected HTTP error
raise
raise RetryDownload(err)
except urllib.error.URLError as err:
if isinstance(err.reason, ssl.CertificateError):
raise
raise RetryDownload(err)
# In urllib.request.AbstractHTTPHandler, the response is partially read on request.
# Any errors that occur during this will not be wrapped by URLError
except RESPONSE_READ_EXCEPTIONS as err:
except CertificateVerifyError:
raise
except TransportError as err:
raise RetryDownload(err)
def close_stream():
@ -258,7 +244,7 @@ def retry(e):
try:
# Download and write
data_block = ctx.data.read(block_size if not is_test else min(block_size, data_len - byte_counter))
except RESPONSE_READ_EXCEPTIONS as err:
except TransportError as err:
retry(err)
byte_counter += len(data_block)

32
yt_dlp/extractor/common.py
View file

@ -17,16 +17,22 @@
import sys
import time
import types
import urllib.error
import urllib.parse
import urllib.request
import xml.etree.ElementTree
from ..compat import functools # isort: split
from ..compat import compat_etree_fromstring, compat_expanduser, compat_os_name
from ..compat import (
compat_etree_fromstring,
compat_expanduser,
compat_os_name,
urllib_req_to_req,
)
from ..cookies import LenientSimpleCookie
from ..downloader.f4m import get_base_url, remove_encrypted_media
from ..downloader.hls import HlsFD
from ..networking.common import HEADRequest, Request
from ..networking.exceptions import network_exceptions
from ..utils import (
IDENTITY,
JSON_LD_RE,
@ -35,7 +41,6 @@
FormatSorter,
GeoRestrictedError,
GeoUtils,
HEADRequest,
LenientJSONDecoder,
Popen,
RegexNotFoundError,
@ -61,7 +66,6 @@
js_to_json,
mimetype2ext,
netrc_from_content,
network_exceptions,
orderedSet,
parse_bitrate,
parse_codecs,
@ -71,7 +75,6 @@
parse_resolution,
sanitize_filename,
sanitize_url,
sanitized_Request,
smuggle_url,
str_or_none,
str_to_int,
@ -83,8 +86,6 @@
unescapeHTML,
unified_strdate,
unified_timestamp,
update_Request,
update_url_query,
url_basename,
url_or_none,
urlhandle_detect_ext,
@ -797,10 +798,12 @@ def __can_accept_status_code(err, expected_status):
def _create_request(self, url_or_request, data=None, headers=None, query=None):
if isinstance(url_or_request, urllib.request.Request):
return update_Request(url_or_request, data=data, headers=headers, query=query)
if query:
url_or_request = update_url_query(url_or_request, query)
return sanitized_Request(url_or_request, data, headers or {})
url_or_request = urllib_req_to_req(url_or_request)
elif not isinstance(url_or_request, Request):
url_or_request = Request(url_or_request)
url_or_request.update(data=data, headers=headers, query=query)
return url_or_request
def _request_webpage(self, url_or_request, video_id, note=None, errnote=None, fatal=True, data=None, headers=None, query=None, expected_status=None):
"""
@ -838,12 +841,7 @@ def _request_webpage(self, url_or_request, video_id, note=None, errnote=None, fa
except network_exceptions as err:
if isinstance(err, urllib.error.HTTPError):
if self.__can_accept_status_code(err, expected_status):
# Retain reference to error to prevent file object from
# being closed before it can be read. Works around the
# effects of <https://bugs.python.org/issue15002>
# introduced in Python 3.4.1.
err.fp._error = err
return err.fp
return err.response
if errnote is False:
return False

13
yt_dlp/networking/__init__.py
View file

@ -0,0 +1,13 @@
# flake8: noqa: 401
from .common import (
HEADRequest,
PUTRequest,
Request,
RequestDirector,
RequestHandler,
Response,
)
# isort: split
# TODO: all request handlers should be safely imported
from . import _urllib

91
yt_dlp/networking/_helper.py
View file

@ -1,13 +1,22 @@
from __future__ import annotations
import contextlib
import functools
import ssl
import sys
import typing
import urllib.parse
import urllib.request
from .exceptions import RequestError, UnsupportedRequest
from ..dependencies import certifi
from ..socks import ProxyType
from ..utils import YoutubeDLError
from ..utils import format_field, traverse_obj
if typing.TYPE_CHECKING:
from collections.abc import Iterable
from ..utils.networking import HTTPHeaderDict
def ssl_load_certs(context: ssl.SSLContext, use_certifi=True):
@ -23,11 +32,11 @@ def ssl_load_certs(context: ssl.SSLContext, use_certifi=True):
# enum_certificates is not present in mingw python. See https://github.com/yt-dlp/yt-dlp/issues/1151
if sys.platform == 'win32' and hasattr(ssl, 'enum_certificates'):
for storename in ('CA', 'ROOT'):
_ssl_load_windows_store_certs(context, storename)
ssl_load_windows_store_certs(context, storename)
context.set_default_verify_paths()
def _ssl_load_windows_store_certs(ssl_context, storename):
def ssl_load_windows_store_certs(ssl_context, storename):
# Code adapted from _load_windows_store_certs in https://github.com/python/cpython/blob/main/Lib/ssl.py
try:
certs = [cert for cert, encoding, trust in ssl.enum_certificates(storename)
@ -44,10 +53,18 @@ def make_socks_proxy_opts(socks_proxy):
url_components = urllib.parse.urlparse(socks_proxy)
if url_components.scheme.lower() == 'socks5':
socks_type = ProxyType.SOCKS5
elif url_components.scheme.lower() in ('socks', 'socks4'):
rdns = False
elif url_components.scheme.lower() == 'socks5h':
socks_type = ProxyType.SOCKS5
rdns = True
elif url_components.scheme.lower() == 'socks4':
socks_type = ProxyType.SOCKS4
rdns = False
elif url_components.scheme.lower() == 'socks4a':
socks_type = ProxyType.SOCKS4A
rdns = True
else:
raise ValueError(f'Unknown SOCKS proxy version: {url_components.scheme.lower()}')
def unquote_if_non_empty(s):
if not s:
@ -57,12 +74,25 @@ def unquote_if_non_empty(s):
'proxytype': socks_type,
'addr': url_components.hostname,
'port': url_components.port or 1080,
'rdns': True,
'rdns': rdns,
'username': unquote_if_non_empty(url_components.username),
'password': unquote_if_non_empty(url_components.password),
}
def select_proxy(url, proxies):
"""Unified proxy selector for all backends"""
url_components = urllib.parse.urlparse(url)
if 'no' in proxies:
hostport = url_components.hostname + format_field(url_components.port, None, ':%s')
if urllib.request.proxy_bypass_environment(hostport, {'no': proxies['no']}):
return
elif urllib.request.proxy_bypass(hostport): # check system settings
return
return traverse_obj(proxies, url_components.scheme or 'http', 'all')
def get_redirect_method(method, status):
"""Unified redirect method handling"""
@ -126,14 +156,53 @@ def make_ssl_context(
client_certificate, keyfile=client_certificate_key,
password=client_certificate_password)
except ssl.SSLError:
raise YoutubeDLError('Unable to load client certificate')
raise RequestError('Unable to load client certificate')
if getattr(context, 'post_handshake_auth', None) is not None:
context.post_handshake_auth = True
return context
def add_accept_encoding_header(headers, supported_encodings):
if supported_encodings and 'Accept-Encoding' not in headers:
headers['Accept-Encoding'] = ', '.join(supported_encodings)
class InstanceStoreMixin:
def __init__(self, **kwargs):
self.__instances = []
super().__init__(**kwargs) # So that both MRO works
elif 'Accept-Encoding' not in headers:
headers['Accept-Encoding'] = 'identity'
@staticmethod
def _create_instance(**kwargs):
raise NotImplementedError
def _get_instance(self, **kwargs):
for key, instance in self.__instances:
if key == kwargs:
return instance
instance = self._create_instance(**kwargs)
self.__instances.append((kwargs, instance))
return instance
def _close_instance(self, instance):
if callable(getattr(instance, 'close', None)):
instance.close()
def _clear_instances(self):
for _, instance in self.__instances:
self._close_instance(instance)
self.__instances.clear()
def add_accept_encoding_header(headers: HTTPHeaderDict, supported_encodings: Iterable[str]):
if 'Accept-Encoding' not in headers:
headers['Accept-Encoding'] = ', '.join(supported_encodings) or 'identity'
def wrap_request_errors(func):
@functools.wraps(func)
def wrapper(self, *args, **kwargs):
try:
return func(self, *args, **kwargs)
except UnsupportedRequest as e:
if e.handler is None:
e.handler = self
raise
return wrapper

231
yt_dlp/networking/_urllib.py
View file

@ -1,3 +1,5 @@
from __future__ import annotations
import functools
import gzip
import http.client
@ -9,26 +11,48 @@
import urllib.request
import urllib.response
import zlib
from urllib.request import (
DataHandler,
FileHandler,
FTPHandler,
HTTPCookieProcessor,
HTTPDefaultErrorHandler,
HTTPErrorProcessor,
UnknownHandler,
)
from ._helper import (
InstanceStoreMixin,
add_accept_encoding_header,
get_redirect_method,
make_socks_proxy_opts,
select_proxy,
)
from .common import Features, RequestHandler, Response, register
from .exceptions import (
CertificateVerifyError,
HTTPError,
IncompleteRead,
ProxyError,
RequestError,
SSLError,
TransportError,
)
from ..dependencies import brotli
from ..socks import ProxyError as SocksProxyError
from ..socks import sockssocket
from ..utils import escape_url, update_url_query
from ..utils.networking import clean_headers, std_headers
SUPPORTED_ENCODINGS = ['gzip', 'deflate']
CONTENT_DECODE_ERRORS = [zlib.error, OSError]
if brotli:
SUPPORTED_ENCODINGS.append('br')
CONTENT_DECODE_ERRORS.append(brotli.error)
def _create_http_connection(ydl_handler, http_class, is_https, *args, **kwargs):
def _create_http_connection(http_class, source_address, *args, **kwargs):
hc = http_class(*args, **kwargs)
source_address = ydl_handler._params.get('source_address')
if source_address is not None:
# This is to workaround _create_connection() from socket where it will try all
@ -73,7 +97,7 @@ def _create_connection(address, timeout=socket._GLOBAL_DEFAULT_TIMEOUT, source_a
return hc
class HTTPHandler(urllib.request.HTTPHandler):
class HTTPHandler(urllib.request.AbstractHTTPHandler):
"""Handler for HTTP requests and responses.
This class, when installed with an OpenerDirector, automatically adds
@ -88,21 +112,30 @@ class HTTPHandler(urllib.request.HTTPHandler):
public domain.
"""
def __init__(self, params, *args, **kwargs):
urllib.request.HTTPHandler.__init__(self, *args, **kwargs)
self._params = params
def __init__(self, context=None, source_address=None, *args, **kwargs):
super().__init__(*args, **kwargs)
self._source_address = source_address
self._context = context
def http_open(self, req):
conn_class = http.client.HTTPConnection
socks_proxy = req.headers.get('Ytdl-socks-proxy')
@staticmethod
def _make_conn_class(base, req):
conn_class = base
socks_proxy = req.headers.pop('Ytdl-socks-proxy', None)
if socks_proxy:
conn_class = make_socks_conn_class(conn_class, socks_proxy)
del req.headers['Ytdl-socks-proxy']
return conn_class
def http_open(self, req):
conn_class = self._make_conn_class(http.client.HTTPConnection, req)
return self.do_open(functools.partial(
_create_http_connection, self, conn_class, False),
req)
_create_http_connection, conn_class, self._source_address), req)
def https_open(self, req):
conn_class = self._make_conn_class(http.client.HTTPSConnection, req)
return self.do_open(
functools.partial(
_create_http_connection, conn_class, self._source_address),
req, context=self._context)
@staticmethod
def deflate(data):
@ -152,14 +185,6 @@ def http_request(self, req):
if url != url_escaped:
req = update_Request(req, url=url_escaped)
for h, v in self._params.get('http_headers', std_headers).items():
# Capitalize is needed because of Python bug 2275: http://bugs.python.org/issue2275
# The dict keys are capitalized because of this bug by urllib
if h.capitalize() not in req.headers:
req.add_header(h, v)
clean_headers(req.headers)
add_accept_encoding_header(req.headers, SUPPORTED_ENCODINGS)
return super().do_request_(req)
def http_response(self, req, resp):
@ -207,16 +232,12 @@ class SocksConnection(base_class):
def connect(self):
self.sock = sockssocket()
self.sock.setproxy(**proxy_args)
if isinstance(self.timeout, (int, float)):
if type(self.timeout) in (int, float): # noqa: E721
self.sock.settimeout(self.timeout)
self.sock.connect((self.host, self.port))
if isinstance(self, http.client.HTTPSConnection):
if hasattr(self, '_context'): # Python > 2.6
self.sock = self._context.wrap_socket(
self.sock, server_hostname=self.host)
else:
self.sock = ssl.wrap_socket(self.sock)
self.sock = self._context.wrap_socket(self.sock, server_hostname=self.host)
return SocksConnection
@ -260,29 +281,25 @@ def redirect_request(self, req, fp, code, msg, headers, newurl):
unverifiable=True, method=new_method, data=new_data)
class ProxyHandler(urllib.request.ProxyHandler):
class ProxyHandler(urllib.request.BaseHandler):
handler_order = 100
def __init__(self, proxies=None):
self.proxies = proxies
# Set default handlers
for type in ('http', 'https'):
setattr(self, '%s_open' % type,
lambda r, proxy='__noproxy__', type=type, meth=self.proxy_open:
meth(r, proxy, type))
urllib.request.ProxyHandler.__init__(self, proxies)
for type in ('http', 'https', 'ftp'):
setattr(self, '%s_open' % type, lambda r, meth=self.proxy_open: meth(r))
def proxy_open(self, req, proxy, type):
req_proxy = req.headers.get('Ytdl-request-proxy')
if req_proxy is not None:
proxy = req_proxy
del req.headers['Ytdl-request-proxy']
if proxy == '__noproxy__':
return None # No Proxy
if urllib.parse.urlparse(proxy).scheme.lower() in ('socks', 'socks4', 'socks4a', 'socks5'):
def proxy_open(self, req):
proxy = select_proxy(req.get_full_url(), self.proxies)
if proxy is None:
return
if urllib.parse.urlparse(proxy).scheme.lower() in ('socks4', 'socks4a', 'socks5', 'socks5h'):
req.add_header('Ytdl-socks-proxy', proxy)
# yt-dlp's http/https handlers do wrapping the socket with socks
return None
return urllib.request.ProxyHandler.proxy_open(
self, req, proxy, type)
self, req, proxy, None)
class PUTRequest(urllib.request.Request):
@ -313,3 +330,129 @@ def update_Request(req, url=None, data=None, headers=None, query=None):
if hasattr(req, 'timeout'):
new_req.timeout = req.timeout
return new_req
class UrllibResponseAdapter(Response):
"""
HTTP Response adapter class for urllib addinfourl and http.client.HTTPResponse
"""
def __init__(self, res: http.client.HTTPResponse | urllib.response.addinfourl):
# addinfourl: In Python 3.9+, .status was introduced and .getcode() was deprecated [1]
# HTTPResponse: .getcode() was deprecated, .status always existed [2]
# 1. https://docs.python.org/3/library/urllib.request.html#urllib.response.addinfourl.getcode
# 2. https://docs.python.org/3.10/library/http.client.html#http.client.HTTPResponse.status
super().__init__(
fp=res, headers=res.headers, url=res.url,
status=getattr(res, 'status', None) or res.getcode(), reason=getattr(res, 'reason', None))
def read(self, amt=None):
try:
return self.fp.read(amt)
except Exception as e:
handle_response_read_exceptions(e)
raise e
def handle_sslerror(e: ssl.SSLError):
if not isinstance(e, ssl.SSLError):
return
if isinstance(e, ssl.SSLCertVerificationError):
raise CertificateVerifyError(cause=e) from e
raise SSLError(cause=e) from e
def handle_response_read_exceptions(e):
if isinstance(e, http.client.IncompleteRead):
raise IncompleteRead(partial=e.partial, cause=e, expected=e.expected) from e
elif isinstance(e, ssl.SSLError):
handle_sslerror(e)
elif isinstance(e, (OSError, EOFError, http.client.HTTPException, *CONTENT_DECODE_ERRORS)):
# OSErrors raised here should mostly be network related
raise TransportError(cause=e) from e
@register
class UrllibRH(RequestHandler, InstanceStoreMixin):
_SUPPORTED_URL_SCHEMES = ('http', 'https', 'data', 'ftp')
_SUPPORTED_PROXY_SCHEMES = ('http', 'socks4', 'socks4a', 'socks5', 'socks5h')
_SUPPORTED_FEATURES = (Features.NO_PROXY, Features.ALL_PROXY)
RH_NAME = 'urllib'
def __init__(self, *, enable_file_urls: bool = False, **kwargs):
super().__init__(**kwargs)
self.enable_file_urls = enable_file_urls
if self.enable_file_urls:
self._SUPPORTED_URL_SCHEMES = (*self._SUPPORTED_URL_SCHEMES, 'file')
def _create_instance(self, proxies, cookiejar):
opener = urllib.request.OpenerDirector()
handlers = [
ProxyHandler(proxies),
HTTPHandler(
debuglevel=int(bool(self.verbose)),
context=self._make_sslcontext(),
source_address=self.source_address),
HTTPCookieProcessor(cookiejar),
DataHandler(),
UnknownHandler(),
HTTPDefaultErrorHandler(),
FTPHandler(),
HTTPErrorProcessor(),
RedirectHandler(),
]
if self.enable_file_urls:
handlers.append(FileHandler())
for handler in handlers:
opener.add_handler(handler)
# Delete the default user-agent header, which would otherwise apply in
# cases where our custom HTTP handler doesn't come into play
# (See https://github.com/ytdl-org/youtube-dl/issues/1309 for details)
opener.addheaders = []
return opener
def _send(self, request):
headers = self._merge_headers(request.headers)
add_accept_encoding_header(headers, SUPPORTED_ENCODINGS)
urllib_req = urllib.request.Request(
url=request.url,
data=request.data,
headers=dict(headers),
method=request.method
)
opener = self._get_instance(
proxies=request.proxies or self.proxies,
cookiejar=request.extensions.get('cookiejar') or self.cookiejar
)
try:
res = opener.open(urllib_req, timeout=float(request.extensions.get('timeout') or self.timeout))
except urllib.error.HTTPError as e:
if isinstance(e.fp, (http.client.HTTPResponse, urllib.response.addinfourl)):
# Prevent file object from being closed when urllib.error.HTTPError is destroyed.
e._closer.file = None
raise HTTPError(UrllibResponseAdapter(e.fp), redirect_loop='redirect error' in str(e)) from e
raise # unexpected
except urllib.error.URLError as e:
cause = e.reason # NOTE: cause may be a string
# proxy errors
if 'tunnel connection failed' in str(cause).lower() or isinstance(cause, SocksProxyError):
raise ProxyError(cause=e) from e
handle_response_read_exceptions(cause)
raise TransportError(cause=e) from e
except (http.client.InvalidURL, ValueError) as e:
# Validation errors
# http.client.HTTPConnection raises ValueError in some validation cases
# such as if request method contains illegal control characters [1]
# 1. https://github.com/python/cpython/blob/987b712b4aeeece336eed24fcc87a950a756c3e2/Lib/http/client.py#L1256
raise RequestError(cause=e) from e
except Exception as e:
handle_response_read_exceptions(e)
raise # unexpected
return UrllibResponseAdapter(res)

522
yt_dlp/networking/common.py Normal file
View file

@ -0,0 +1,522 @@
from __future__ import annotations
import abc
import copy
import enum
import functools
import io
import typing
import urllib.parse
import urllib.request
import urllib.response
from collections.abc import Iterable, Mapping
from email.message import Message
from http import HTTPStatus
from http.cookiejar import CookieJar
from ._helper import make_ssl_context, wrap_request_errors
from .exceptions import (
NoSupportingHandlers,
RequestError,
TransportError,
UnsupportedRequest,
)
from ..utils import (
bug_reports_message,
classproperty,
error_to_str,
escape_url,
update_url_query,
)
from ..utils.networking import HTTPHeaderDict
if typing.TYPE_CHECKING:
RequestData = bytes | Iterable[bytes] | typing.IO | None
class RequestDirector:
"""RequestDirector class
Helper class that, when given a request, forward it to a RequestHandler that supports it.
@param logger: Logger instance.
@param verbose: Print debug request information to stdout.
"""
def __init__(self, logger, verbose=False):
self.handlers: dict[str, RequestHandler] = {}
self.logger = logger # TODO(Grub4k): default logger
self.verbose = verbose
def close(self):
for handler in self.handlers.values():
handler.close()
def add_handler(self, handler: RequestHandler):
"""Add a handler. If a handler of the same RH_KEY exists, it will overwrite it"""
assert isinstance(handler, RequestHandler), 'handler must be a RequestHandler'
self.handlers[handler.RH_KEY] = handler
def _print_verbose(self, msg):
if self.verbose:
self.logger.stdout(f'director: {msg}')
def send(self, request: Request) -> Response:
"""
Passes a request onto a suitable RequestHandler
"""
if not self.handlers:
raise RequestError('No request handlers configured')
assert isinstance(request, Request)
unexpected_errors = []
unsupported_errors = []
# TODO (future): add a per-request preference system
for handler in reversed(list(self.handlers.values())):
self._print_verbose(f'Checking if "{handler.RH_NAME}" supports this request.')
try:
handler.validate(request)
except UnsupportedRequest as e:
self._print_verbose(
f'"{handler.RH_NAME}" cannot handle this request (reason: {error_to_str(e)})')
unsupported_errors.append(e)
continue
self._print_verbose(f'Sending request via "{handler.RH_NAME}"')
try:
response = handler.send(request)
except RequestError:
raise
except Exception as e:
self.logger.error(
f'[{handler.RH_NAME}] Unexpected error: {error_to_str(e)}{bug_reports_message()}',
is_error=False)
unexpected_errors.append(e)
continue
assert isinstance(response, Response)
return response
raise NoSupportingHandlers(unsupported_errors, unexpected_errors)
_REQUEST_HANDLERS = {}
def register(handler):
"""Register a RequestHandler class"""
assert issubclass(handler, RequestHandler), f'{handler} must be a subclass of RequestHandler'
assert handler.RH_KEY not in _REQUEST_HANDLERS, f'RequestHandler {handler.RH_KEY} already registered'
_REQUEST_HANDLERS[handler.RH_KEY] = handler
return handler
class Features(enum.Enum):
ALL_PROXY = enum.auto()
NO_PROXY = enum.auto()
class RequestHandler(abc.ABC):
"""Request Handler class
Request handlers are class that, given a Request,
process the request from start to finish and return a Response.
Concrete subclasses need to redefine the _send(request) method,
which handles the underlying request logic and returns a Response.
RH_NAME class variable may contain a display name for the RequestHandler.
By default, this is generated from the class name.
The concrete request handler MUST have "RH" as the suffix in the class name.
All exceptions raised by a RequestHandler should be an instance of RequestError.
Any other exception raised will be treated as a handler issue.
If a Request is not supported by the handler, an UnsupportedRequest
should be raised with a reason.
By default, some checks are done on the request in _validate() based on the following class variables:
- `_SUPPORTED_URL_SCHEMES`: a tuple of supported url schemes.
Any Request with an url scheme not in this list will raise an UnsupportedRequest.
- `_SUPPORTED_PROXY_SCHEMES`: a tuple of support proxy url schemes. Any Request that contains
a proxy url with an url scheme not in this list will raise an UnsupportedRequest.
- `_SUPPORTED_FEATURES`: a tuple of supported features, as defined in Features enum.
The above may be set to None to disable the checks.
Parameters:
@param logger: logger instance
@param headers: HTTP Headers to include when sending requests.
@param cookiejar: Cookiejar to use for requests.
@param timeout: Socket timeout to use when sending requests.
@param proxies: Proxies to use for sending requests.
@param source_address: Client-side IP address to bind to for requests.
@param verbose: Print debug request and traffic information to stdout.
@param prefer_system_certs: Whether to prefer system certificates over other means (e.g. certifi).
@param client_cert: SSL client certificate configuration.
dict with {client_certificate, client_certificate_key, client_certificate_password}
@param verify: Verify SSL certificates
@param legacy_ssl_support: Enable legacy SSL options such as legacy server connect and older cipher support.
Some configuration options may be available for individual Requests too. In this case,
either the Request configuration option takes precedence or they are merged.
Requests may have additional optional parameters defined as extensions.
RequestHandler subclasses may choose to support custom extensions.
The following extensions are defined for RequestHandler:
- `cookiejar`: Cookiejar to use for this request
- `timeout`: socket timeout to use for this request
Apart from the url protocol, proxies dict may contain the following keys:
- `all`: proxy to use for all protocols. Used as a fallback if no proxy is set for a specific protocol.
- `no`: comma seperated list of hostnames (optionally with port) to not use a proxy for.
Note: a RequestHandler may not support these, as defined in `_SUPPORTED_FEATURES`.
"""
_SUPPORTED_URL_SCHEMES = ()
_SUPPORTED_PROXY_SCHEMES = ()
_SUPPORTED_FEATURES = ()
def __init__(
self, *,
logger, # TODO(Grub4k): default logger
headers: HTTPHeaderDict = None,
cookiejar: CookieJar = None,
timeout: float | int | None = None,
proxies: dict = None,
source_address: str = None,
verbose: bool = False,
prefer_system_certs: bool = False,
client_cert: dict[str, str | None] = None,
verify: bool = True,
legacy_ssl_support: bool = False,
**_,
):
self._logger = logger
self.headers = headers or {}
self.cookiejar = cookiejar if cookiejar is not None else CookieJar()
self.timeout = float(timeout or 20)
self.proxies = proxies or {}
self.source_address = source_address
self.verbose = verbose
self.prefer_system_certs = prefer_system_certs
self._client_cert = client_cert or {}
self.verify = verify
self.legacy_ssl_support = legacy_ssl_support
super().__init__()
def _make_sslcontext(self):
return make_ssl_context(
verify=self.verify,
legacy_support=self.legacy_ssl_support,
use_certifi=not self.prefer_system_certs,
**self._client_cert,
)
def _merge_headers(self, request_headers):
return HTTPHeaderDict(self.headers, request_headers)
def _check_url_scheme(self, request: Request):
scheme = urllib.parse.urlparse(request.url).scheme.lower()
if self._SUPPORTED_URL_SCHEMES is not None and scheme not in self._SUPPORTED_URL_SCHEMES:
raise UnsupportedRequest(f'Unsupported url scheme: "{scheme}"')
return scheme # for further processing
def _check_proxies(self, proxies):
for proxy_key, proxy_url in proxies.items():
if proxy_url is None:
continue
if proxy_key == 'no':
if self._SUPPORTED_FEATURES is not None and Features.NO_PROXY not in self._SUPPORTED_FEATURES:
raise UnsupportedRequest('"no" proxy is not supported')
continue
if (
proxy_key == 'all'
and self._SUPPORTED_FEATURES is not None
and Features.ALL_PROXY not in self._SUPPORTED_FEATURES
):
raise UnsupportedRequest('"all" proxy is not supported')
# Unlikely this handler will use this proxy, so ignore.
# This is to allow a case where a proxy may be set for a protocol
# for one handler in which such protocol (and proxy) is not supported by another handler.
if self._SUPPORTED_URL_SCHEMES is not None and proxy_key not in (*self._SUPPORTED_URL_SCHEMES, 'all'):
continue
if self._SUPPORTED_PROXY_SCHEMES is None:
# Skip proxy scheme checks
continue
# Scheme-less proxies are not supported
if urllib.request._parse_proxy(proxy_url)[0] is None:
raise UnsupportedRequest(f'Proxy "{proxy_url}" missing scheme')
scheme = urllib.parse.urlparse(proxy_url).scheme.lower()
if scheme not in self._SUPPORTED_PROXY_SCHEMES:
raise UnsupportedRequest(f'Unsupported proxy type: "{scheme}"')
def _check_cookiejar_extension(self, extensions):
if not extensions.get('cookiejar'):
return
if not isinstance(extensions['cookiejar'], CookieJar):
raise UnsupportedRequest('cookiejar is not a CookieJar')
def _check_timeout_extension(self, extensions):
if extensions.get('timeout') is None:
return
if not isinstance(extensions['timeout'], (float, int)):
raise UnsupportedRequest('timeout is not a float or int')
def _check_extensions(self, extensions):
self._check_cookiejar_extension(extensions)
self._check_timeout_extension(extensions)
def _validate(self, request):
self._check_url_scheme(request)
self._check_proxies(request.proxies or self.proxies)
self._check_extensions(request.extensions)
@wrap_request_errors
def validate(self, request: Request):
if not isinstance(request, Request):
raise TypeError('Expected an instance of Request')
self._validate(request)
@wrap_request_errors
def send(self, request: Request) -> Response:
if not isinstance(request, Request):
raise TypeError('Expected an instance of Request')
return self._send(request)
@abc.abstractmethod
def _send(self, request: Request):
"""Handle a request from start to finish. Redefine in subclasses."""
def close(self):
pass
@classproperty
def RH_NAME(cls):
return cls.__name__[:-2]
@classproperty
def RH_KEY(cls):
assert cls.__name__.endswith('RH'), 'RequestHandler class names must end with "RH"'
return cls.__name__[:-2]
def __enter__(self):
return self
def __exit__(self, *args):
self.close()
class Request:
"""
Represents a request to be made.
Partially backwards-compatible with urllib.request.Request.
@param url: url to send. Will be sanitized.
@param data: payload data to send. Must be bytes, iterable of bytes, a file-like object or None
@param headers: headers to send.
@param proxies: proxy dict mapping of proto:proxy to use for the request and any redirects.
@param query: URL query parameters to update the url with.
@param method: HTTP method to use. If no method specified, will use POST if payload data is present else GET
@param extensions: Dictionary of Request extensions to add, as supported by handlers.
"""
def __init__(
self,
url: str,
data: RequestData = None,
headers: typing.Mapping = None,
proxies: dict = None,
query: dict = None,
method: str = None,
extensions: dict = None
):
self._headers = HTTPHeaderDict()
self._data = None
if query:
url = update_url_query(url, query)
self.url = url
self.method = method
if headers:
self.headers = headers
self.data = data # note: must be done after setting headers
self.proxies = proxies or {}
self.extensions = extensions or {}
@property
def url(self):
return self._url
@url.setter
def url(self, url):
if not isinstance(url, str):
raise TypeError('url must be a string')
elif url.startswith('//'):
url = 'http:' + url
self._url = escape_url(url)
@property
def method(self):
return self._method or ('POST' if self.data is not None else 'GET')
@method.setter
def method(self, method):
if method is None:
self._method = None
elif isinstance(method, str):
self._method = method.upper()
else:
raise TypeError('method must be a string')
@property
def data(self):
return self._data
@data.setter
def data(self, data: RequestData):
# Try catch some common mistakes
if data is not None and (
not isinstance(data, (bytes, io.IOBase, Iterable)) or isinstance(data, (str, Mapping))
):
raise TypeError('data must be bytes, iterable of bytes, or a file-like object')
if data == self._data and self._data is None:
self.headers.pop('Content-Length', None)
# https://docs.python.org/3/library/urllib.request.html#urllib.request.Request.data
if data != self._data:
if self._data is not None:
self.headers.pop('Content-Length', None)
self._data = data
if self._data is None:
self.headers.pop('Content-Type', None)
if 'Content-Type' not in self.headers and self._data is not None:
self.headers['Content-Type'] = 'application/x-www-form-urlencoded'
@property
def headers(self) -> HTTPHeaderDict:
return self._headers
@headers.setter
def headers(self, new_headers: Mapping):
"""Replaces headers of the request. If not a CaseInsensitiveDict, it will be converted to one."""
if isinstance(new_headers, HTTPHeaderDict):
self._headers = new_headers
elif isinstance(new_headers, Mapping):
self._headers = HTTPHeaderDict(new_headers)
else:
raise TypeError('headers must be a mapping')
def update(self, url=None, data=None, headers=None, query=None):
self.data = data or self.data
self.headers.update(headers or {})
self.url = update_url_query(url or self.url, query or {})
def copy(self):
return self.__class__(
url=self.url,
headers=copy.deepcopy(self.headers),
proxies=copy.deepcopy(self.proxies),
data=self._data,
extensions=copy.copy(self.extensions),
method=self._method,
)
HEADRequest = functools.partial(Request, method='HEAD')
PUTRequest = functools.partial(Request, method='PUT')
class Response(io.IOBase):
"""
Base class for HTTP response adapters.
By default, it provides a basic wrapper for a file-like response object.
Interface partially backwards-compatible with addinfourl and http.client.HTTPResponse.
@param fp: Original, file-like, response.
@param url: URL that this is a response of.
@param headers: response headers.
@param status: Response HTTP status code. Default is 200 OK.
@param reason: HTTP status reason. Will use built-in reasons based on status code if not provided.
"""
def __init__(
self,
fp: typing.IO,
url: str,
headers: Mapping[str, str],
status: int = 200,
reason: str = None):
self.fp = fp
self.headers = Message()
for name, value in headers.items():
self.headers.add_header(name, value)
self.status = status
self.url = url
try:
self.reason = reason or HTTPStatus(status).phrase
except ValueError:
self.reason = None
def readable(self):
return self.fp.readable()
def read(self, amt: int = None) -> bytes:
# Expected errors raised here should be of type RequestError or subclasses.
# Subclasses should redefine this method with more precise error handling.
try:
return self.fp.read(amt)
except Exception as e:
raise TransportError(cause=e) from e
def close(self):
self.fp.close()
return super().close()
def get_header(self, name, default=None):
"""Get header for name.
If there are multiple matching headers, return all seperated by comma."""
headers = self.headers.get_all(name)
if not headers:
return default
if name.title() == 'Set-Cookie':
# Special case, only get the first one
# https://www.rfc-editor.org/rfc/rfc9110.html#section-5.3-4.1
return headers[0]
return ', '.join(headers)
# The following methods are for compatability reasons and are deprecated
@property
def code(self):
return self.status
def getcode(self):
return self.status
def geturl(self):
return self.url
def info(self):
return self.headers
def getheader(self, name, default=None):
return self.get_header(name, default)

202
yt_dlp/networking/exceptions.py
View file

@ -1,9 +1,197 @@
import http.client
import socket
import ssl
from __future__ import annotations
import typing
import urllib.error
network_exceptions = [urllib.error.URLError, http.client.HTTPException, socket.error]
if hasattr(ssl, 'CertificateError'):
network_exceptions.append(ssl.CertificateError)
network_exceptions = tuple(network_exceptions)
from ..utils import YoutubeDLError
if typing.TYPE_CHECKING:
from .common import RequestHandler, Response
class RequestError(YoutubeDLError):
def __init__(
self,
msg: str | None = None,
cause: Exception | str | None = None,
handler: RequestHandler = None
):
self.handler = handler
self.cause = cause
if not msg and cause:
msg = str(cause)
super().__init__(msg)
class UnsupportedRequest(RequestError):
"""raised when a handler cannot handle a request"""
pass
class NoSupportingHandlers(RequestError):
"""raised when no handlers can support a request for various reasons"""
def __init__(self, unsupported_errors: list[UnsupportedRequest], unexpected_errors: list[Exception]):
self.unsupported_errors = unsupported_errors or []
self.unexpected_errors = unexpected_errors or []
# Print a quick summary of the errors
err_handler_map = {}
for err in unsupported_errors:
err_handler_map.setdefault(err.msg, []).append(err.handler.RH_NAME)
reason_str = ', '.join([f'{msg} ({", ".join(handlers)})' for msg, handlers in err_handler_map.items()])
if unexpected_errors:
reason_str = ' + '.join(filter(None, [reason_str, f'{len(unexpected_errors)} unexpected error(s)']))
err_str = 'Unable to handle request'
if reason_str:
err_str += f': {reason_str}'
super().__init__(msg=err_str)
class TransportError(RequestError):
"""Network related errors"""
class HTTPError(RequestError):
def __init__(self, response: Response, redirect_loop=False):
self.response = response
self.status = response.status
self.reason = response.reason
self.redirect_loop = redirect_loop
msg = f'HTTP Error {response.status}: {response.reason}'
if redirect_loop:
msg += ' (redirect loop detected)'
super().__init__(msg=msg)
def close(self):
self.response.close()
def __repr__(self):
return f'<HTTPError {self.status}: {self.reason}>'
class IncompleteRead(TransportError):
def __init__(self, partial, expected=None, **kwargs):
self.partial = partial
self.expected = expected
msg = f'{len(partial)} bytes read'
if expected is not None:
msg += f', {expected} more expected'
super().__init__(msg=msg, **kwargs)
def __repr__(self):
return f'<IncompleteRead: {self.msg}>'
class SSLError(TransportError):
pass
class CertificateVerifyError(SSLError):
"""Raised when certificate validated has failed"""
pass
class ProxyError(TransportError):
pass
class _CompatHTTPError(urllib.error.HTTPError, HTTPError):
"""
Provides backwards compatibility with urllib.error.HTTPError.
Do not use this class directly, use HTTPError instead.
"""
def __init__(self, http_error: HTTPError):
super().__init__(
url=http_error.response.url,
code=http_error.status,
msg=http_error.msg,
hdrs=http_error.response.headers,
fp=http_error.response
)
self._closer.file = None # Disable auto close
self._http_error = http_error
HTTPError.__init__(self, http_error.response, redirect_loop=http_error.redirect_loop)
@property
def status(self):
return self._http_error.status
@status.setter
def status(self, value):
return
@property
def reason(self):
return self._http_error.reason
@reason.setter
def reason(self, value):
return
@property
def headers(self):
return self._http_error.response.headers
@headers.setter
def headers(self, value):
return
def info(self):
return self.response.headers
def getcode(self):
return self.status
def geturl(self):
return self.response.url
@property
def code(self):
return self.status
@code.setter
def code(self, value):
return
@property
def url(self):
return self.response.url
@url.setter
def url(self, value):
return
@property
def hdrs(self):
return self.response.headers
@hdrs.setter
def hdrs(self, value):
return
@property
def filename(self):
return self.response.url
@filename.setter
def filename(self, value):
return
def __getattr__(self, name):
return super().__getattr__(name)
def __str__(self):
return str(self._http_error)
def __repr__(self):
return repr(self._http_error)
network_exceptions = (HTTPError, TransportError)

13
yt_dlp/utils/_deprecated.py
View file

@ -10,16 +10,16 @@
from ._utils import preferredencoding
from ..networking._urllib import HTTPHandler
# isort: split
from .networking import random_user_agent, std_headers # noqa: F401
from ..networking._urllib import PUTRequest # noqa: F401
from ..networking._urllib import SUPPORTED_ENCODINGS, HEADRequest # noqa: F401
from ..networking._urllib import HTTPHandler as YoutubeDLHandler # noqa: F401
from ..networking._urllib import ProxyHandler as PerRequestProxyHandler # noqa: F401
from ..networking._urllib import RedirectHandler as YoutubeDLRedirectHandler # noqa: F401
from ..networking._urllib import make_socks_conn_class, update_Request # noqa: F401
from ..networking.exceptions import network_exceptions # noqa: F401
from .networking import random_user_agent, std_headers # noqa: F401
def encodeFilename(s, for_subprocess=False):
@ -47,3 +47,12 @@ def decodeOption(optval):
def error_to_compat_str(err):
return str(err)
class YoutubeDLHandler(HTTPHandler):
def __init__(self, params, *args, **kwargs):
self._params = params
super().__init__(*args, **kwargs)
YoutubeDLHTTPSHandler = YoutubeDLHandler

35
yt_dlp/utils/_utils.py
View file

@ -15,8 +15,6 @@
import hmac
import html.entities
import html.parser
import http.client
import http.cookiejar
import inspect
import io
import itertools
@ -897,6 +895,7 @@ def formatSeconds(secs, delim=':', msec=False):
def make_HTTPS_handler(params, **kwargs):
from ._deprecated import YoutubeDLHTTPSHandler
from ..networking._helper import make_ssl_context
return YoutubeDLHTTPSHandler(params, context=make_ssl_context(
verify=not params.get('nocheckcertificate'),
@ -1140,38 +1139,6 @@ class XAttrUnavailableError(YoutubeDLError):
pass
class YoutubeDLHTTPSHandler(urllib.request.HTTPSHandler):
def __init__(self, params, https_conn_class=None, *args, **kwargs):
urllib.request.HTTPSHandler.__init__(self, *args, **kwargs)
self._https_conn_class = https_conn_class or http.client.HTTPSConnection
self._params = params
def https_open(self, req):
kwargs = {}
conn_class = self._https_conn_class
if hasattr(self, '_context'): # python > 2.6
kwargs['context'] = self._context
if hasattr(self, '_check_hostname'): # python 3.x
kwargs['check_hostname'] = self._check_hostname
socks_proxy = req.headers.get('Ytdl-socks-proxy')
if socks_proxy:
from ..networking._urllib import make_socks_conn_class
conn_class = make_socks_conn_class(conn_class, socks_proxy)
del req.headers['Ytdl-socks-proxy']
from ..networking._urllib import _create_http_connection
try:
return self.do_open(
functools.partial(_create_http_connection, self, conn_class, True), req, **kwargs)
except urllib.error.URLError as e:
if (isinstance(e.reason, ssl.SSLError)
and getattr(e.reason, 'reason', None) == 'SSLV3_ALERT_HANDSHAKE_FAILURE'):
raise YoutubeDLError('SSLV3_ALERT_HANDSHAKE_FAILURE: Try using --legacy-server-connect')
raise
def is_path_like(f):
return isinstance(f, (str, bytes, os.PathLike))

67
yt_dlp/utils/networking.py
View file

@ -1,4 +1,9 @@
import collections
import random
import urllib.parse
import urllib.request
from ._utils import remove_start
def random_user_agent():
@ -46,15 +51,67 @@ def random_user_agent():
return _USER_AGENT_TPL % random.choice(_CHROME_VERSIONS)
std_headers = {
class HTTPHeaderDict(collections.UserDict, dict):
"""
Store and access keys case-insensitively.
The constructor can take multiple dicts, in which keys in the latter are prioritised.
"""
def __init__(self, *args, **kwargs):
super().__init__()
for dct in args:
if dct is not None:
self.update(dct)
self.update(kwargs)
def __setitem__(self, key, value):
super().__setitem__(key.title(), str(value))
def __getitem__(self, key):
return super().__getitem__(key.title())
def __delitem__(self, key):
super().__delitem__(key.title())
def __contains__(self, key):
return super().__contains__(key.title() if isinstance(key, str) else key)
std_headers = HTTPHeaderDict({
'User-Agent': random_user_agent(),
'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
'Accept-Language': 'en-us,en;q=0.5',
'Sec-Fetch-Mode': 'navigate',
}
})
def clean_headers(headers):
if 'Youtubedl-no-compression' in headers: # compat
del headers['Youtubedl-no-compression']
def clean_proxies(proxies: dict, headers: HTTPHeaderDict):
req_proxy = headers.pop('Ytdl-Request-Proxy', None)
if req_proxy:
proxies.clear() # XXX: compat: Ytdl-Request-Proxy takes preference over everything, including NO_PROXY
proxies['all'] = req_proxy
for proxy_key, proxy_url in proxies.items():
if proxy_url == '__noproxy__':
proxies[proxy_key] = None
continue
if proxy_key == 'no': # special case
continue
if proxy_url is not None:
# Ensure proxies without a scheme are http.
proxy_scheme = urllib.request._parse_proxy(proxy_url)[0]
if proxy_scheme is None:
proxies[proxy_key] = 'http://' + remove_start(proxy_url, '//')
replace_scheme = {
'socks5': 'socks5h', # compat: socks5 was treated as socks5h
'socks': 'socks4' # compat: non-standard
}
if proxy_scheme in replace_scheme:
proxies[proxy_key] = urllib.parse.urlunparse(
urllib.parse.urlparse(proxy_url)._replace(scheme=replace_scheme[proxy_scheme]))
def clean_headers(headers: HTTPHeaderDict):
if 'Youtubedl-No-Compression' in headers: # compat
del headers['Youtubedl-No-Compression']
headers['Accept-Encoding'] = 'identity'