[FFmpeg-devel] [PATCH v3 4/6] lavf/tls_mbedtls: fix handling of certification

[sfan5 <sfan5@live.de>]

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From 2cfdd92e8b323a41b65e3d6be2fc9c7641bb26c0 Mon Sep 17 00:00:00 2001
From: sfan5 <sfan5@live.de>
Date: Mon, 13 May 2024 20:27:17 +0200
Subject: [PATCH v3 4/6] lavf/tls_mbedtls: fix handling of certification
 validation failures

We manually check the verification status after the handshake has completed
using mbedtls_ssl_get_verify_result(). However with VERIFY_REQUIRED
mbedtls_ssl_handshake() already returns an error, so this code is never reached.
Fix that by using VERIFY_OPTIONAL, which performs the verification but
does not abort the handshake.

Signed-off-by: sfan5 <sfan5@live.de>
---
 libavformat/tls_mbedtls.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libavformat/tls_mbedtls.c b/libavformat/tls_mbedtls.c
index ba94ab3a70..f65f2f4020 100644
--- a/libavformat/tls_mbedtls.c
+++ b/libavformat/tls_mbedtls.c
@@ -269,8 +269,9 @@ static int tls_open(URLContext *h, const char *uri, int flags, AVDictionary **op
         goto fail;
     }
 
+    // not VERIFY_REQUIRED because we manually check after handshake
     mbedtls_ssl_conf_authmode(&tls_ctx->ssl_config,
-                              shr->verify ? MBEDTLS_SSL_VERIFY_REQUIRED : MBEDTLS_SSL_VERIFY_NONE);
+                              shr->verify ? MBEDTLS_SSL_VERIFY_OPTIONAL : MBEDTLS_SSL_VERIFY_NONE);
     mbedtls_ssl_conf_rng(&tls_ctx->ssl_config, mbedtls_ctr_drbg_random, &tls_ctx->ctr_drbg_context);
     mbedtls_ssl_conf_ca_chain(&tls_ctx->ssl_config, &tls_ctx->ca_cert, NULL);
 
-- 
2.45.2


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