On 8 Jul 2025, at 20:53, Marvin Scholz wrote:

> From: Daniel N Pettersson <danie...@axis.com>
>
> When verification is enabled (using -tls_verify 1) now
> the hostname will be verified properly too, while before
> only other aspects of the certificate were checked.
>
> Co-Authored-By: Marvin Scholz <epira...@gmail.com>
> ---
>  libavformat/tls_openssl.c | 12 +++++++++---
>  1 file changed, 9 insertions(+), 3 deletions(-)
>
> diff --git a/libavformat/tls_openssl.c b/libavformat/tls_openssl.c
> index a0fa3285d5..7f10d80f9e 100644
> --- a/libavformat/tls_openssl.c
> +++ b/libavformat/tls_openssl.c
> @@ -906,8 +906,7 @@ static int tls_open(URLContext *h, const char *uri, int 
> flags, AVDictionary **op
>      }
>      ret = openssl_init_ca_key_cert(h);
>      if (ret < 0) goto fail;
> -    // Note, this doesn't check that the peer certificate actually matches
> -    // the requested hostname.
> +
>      if (c->verify)
>          SSL_CTX_set_verify(p->ctx, 
> SSL_VERIFY_PEER|SSL_VERIFY_FAIL_IF_NO_PEER_CERT, NULL);
>      p->ssl = SSL_new(p->ctx);
> @@ -921,8 +920,15 @@ static int tls_open(URLContext *h, const char *uri, int 
> flags, AVDictionary **op
>      ret = init_bio_method(h);
>      if (ret < 0)
>          goto fail;
> -    if (!c->listen && !c->numerichost)
> +    if (!c->listen && !c->numerichost) {
> +        if (!SSL_set1_host(p->ssl, c->host)) {
> +            av_log(h, AV_LOG_ERROR, "Failed to set hostname for TLS/SSL 
> verification: %s\n",
> +                openssl_get_error(p));
> +            ret = AVERROR_EXTERNAL;
> +            goto fail;
> +        }
>          SSL_set_tlsext_host_name(p->ssl, c->host);
> +    }
>      ret = c->listen ? SSL_accept(p->ssl) : SSL_connect(p->ssl);
>      if (ret == 0) {
>          av_log(h, AV_LOG_ERROR, "Unable to negotiate TLS/SSL session\n");
> -- 
> 2.39.5 (Apple Git-154)


Planning to push the set tomorrow, if there are no objections.
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