From 4f28b537d9bba625a0097ee506c49b063291dba6 Mon Sep 17 00:00:00 2001 From: pukkandan Date: Sat, 7 May 2022 18:08:47 +0530 Subject: [PATCH] Allow use of weaker ciphers with `--legacy-server-connect` Closes #2043 --- yt_dlp/utils.py | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-) diff --git a/yt_dlp/utils.py b/yt_dlp/utils.py index 3f22eaf75..8b2c1c75a 100644 --- a/yt_dlp/utils.py +++ b/yt_dlp/utils.py @@ -917,6 +917,8 @@ def make_HTTPS_handler(params, **kwargs): context.check_hostname = opts_check_certificate if params.get('legacyserverconnect'): context.options |= 4 # SSL_OP_LEGACY_SERVER_CONNECT + # Allow use of weaker ciphers in Python 3.10+. See https://bugs.python.org/issue43998 + context.set_ciphers('DEFAULT') context.verify_mode = ssl.CERT_REQUIRED if opts_check_certificate else ssl.CERT_NONE if opts_check_certificate: if has_certifi and 'no-certifi' not in params.get('compat_opts', []): @@ -930,9 +932,6 @@ def make_HTTPS_handler(params, **kwargs): except ssl.SSLError: # 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'): - # Create a new context to discard any certificates that were already loaded - context = ssl.SSLContext(ssl.PROTOCOL_TLS_CLIENT) - context.check_hostname, context.verify_mode = True, ssl.CERT_REQUIRED for storename in ('CA', 'ROOT'): _ssl_load_windows_store_certs(context, storename) context.set_default_verify_paths() @@ -1414,9 +1413,14 @@ class YoutubeDLHTTPSHandler(compat_urllib_request.HTTPSHandler): conn_class = make_socks_conn_class(conn_class, socks_proxy) del req.headers['Ytdl-socks-proxy'] - return self.do_open(functools.partial( - _create_http_connection, self, conn_class, True), - req, **kwargs) + 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 class YoutubeDLCookieJar(compat_cookiejar.MozillaCookieJar):