PR #22708 opened by Timo Rothenpieler (BtbN) URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/22708 Patch URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/22708.patch
This was for some reason not possible, even though the code is largely identical to the server cert one. >From 9b896d629deff187ac1f6f6b0d030d4e61867bdc Mon Sep 17 00:00:00 2001 From: Timo Rothenpieler <[email protected]> Date: Sat, 4 Apr 2026 17:06:10 +0200 Subject: [PATCH] avformat/tls_schannel: support sending client certificates --- libavformat/tls_schannel.c | 35 +++++++++++++++++++++-------------- 1 file changed, 21 insertions(+), 14 deletions(-) diff --git a/libavformat/tls_schannel.c b/libavformat/tls_schannel.c index 6708302b65..1fd6d07dc0 100644 --- a/libavformat/tls_schannel.c +++ b/libavformat/tls_schannel.c @@ -619,6 +619,8 @@ typedef struct TLSContext { int connected; int connection_closed; int sspi_close_notify; + + int have_private_cert; } TLSContext; int ff_tls_set_external_socket(URLContext *h, URLContext *sock) @@ -925,7 +927,7 @@ static int tls_handshake_loop(URLContext *h, int initial) /* remote requests a client certificate - attempt to continue without one anyway */ if (sspi_ret == SEC_I_INCOMPLETE_CREDENTIALS && !(c->request_flags & ISC_REQ_USE_SUPPLIED_CREDS)) { - av_log(h, AV_LOG_VERBOSE, "Client certificate has been requested, ignoring\n"); + av_log(h, AV_LOG_WARNING, "Server requested a client certificate\n"); c->request_flags |= ISC_REQ_USE_SUPPLIED_CREDS; read_data = 0; continue; @@ -1030,6 +1032,8 @@ static int tls_client_handshake(URLContext *h) c->request_flags |= ISC_REQ_DATAGRAM; else c->request_flags |= ISC_REQ_STREAM; + if (c->have_private_cert) + c->request_flags |= ISC_REQ_USE_SUPPLIED_CREDS; sspi_ret = InitializeSecurityContext(&c->cred_handle, NULL, s->host, c->request_flags, 0, 0, NULL, 0, &c->ctxt_handle, &outbuf_desc, &c->context_flags, @@ -1127,24 +1131,27 @@ static int tls_open(URLContext *h, const char *uri, int flags, AVDictionary **op /* SChannel Options */ schannel_cred.dwVersion = SCHANNEL_CRED_VERSION; - if (s->listen) { - if (c->cert_store_name && c->cert_store_subject) { - ret = tls_cert_from_store(h, c->cert_store_name, c->cert_store_subject, &crtctx); - } else if (s->key_buf && s->cert_buf) { - ret = tls_import_key_cert(s->key_buf, s->cert_buf, &key, &crtctx); - } else if (s->key_file && s->cert_file) { - ret = tls_load_key_cert(s->key_file, s->cert_file, &key, &crtctx); - } else { - av_log(h, AV_LOG_VERBOSE, "No server certificate provided, using self-signed\n"); - ret = tls_gen_self_signed(&key, &crtctx); - } + if (c->cert_store_name && c->cert_store_subject) { + ret = tls_cert_from_store(h, c->cert_store_name, c->cert_store_subject, &crtctx); + } else if (s->key_buf && s->cert_buf) { + ret = tls_import_key_cert(s->key_buf, s->cert_buf, &key, &crtctx); + } else if (s->key_file && s->cert_file) { + ret = tls_load_key_cert(s->key_file, s->cert_file, &key, &crtctx); + } else if (s->listen) { + av_log(h, AV_LOG_VERBOSE, "No server certificate provided, using self-signed\n"); + ret = tls_gen_self_signed(&key, &crtctx); + } - if (ret < 0) - goto fail; + if (ret < 0) + goto fail; + if (crtctx) { schannel_cred.cCreds = 1; schannel_cred.paCred = &crtctx; + c->have_private_cert = 1; + } + if (s->listen) { schannel_cred.dwFlags = SCH_CRED_NO_SYSTEM_MAPPER | SCH_CRED_MANUAL_CRED_VALIDATION; #if CONFIG_DTLS_PROTOCOL -- 2.52.0 _______________________________________________ ffmpeg-devel mailing list -- [email protected] To unsubscribe send an email to [email protected]
