[FFmpeg-devel] [PATCH 4/8] avformat/tls_openssl: properly get new BIO index

[Marvin Scholz <epirat07-at-gmail.com@ffmpeg.org>]

As noted in the OpenSSL documentation, BIO_get_new_index must be
used to get a new BIO index. This is ORd with the proper type flag
BIO_TYPE_SOURCE_SINK.
---
 libavformat/tls_openssl.c | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

diff --git a/libavformat/tls_openssl.c b/libavformat/tls_openssl.c
index 25991c8c9d..7f796c7ddb 100644
--- a/libavformat/tls_openssl.c
+++ b/libavformat/tls_openssl.c
@@ -613,11 +613,14 @@ static int url_bio_bputs(BIO *b, const char *str)
     return url_bio_bwrite(b, str, strlen(str));
 }
 
-static av_cold void init_bio_method(URLContext *h)
+static av_cold int init_bio_method(URLContext *h)
 {
     TLSContext *p = h->priv_data;
     BIO *bio;
-    p->url_bio_method = BIO_meth_new(BIO_TYPE_SOURCE_SINK, "urlprotocol bio");
+    int bio_idx = BIO_get_new_index();
+    if (bio_idx == -1)
+        return AVERROR_EXTERNAL;
+    p->url_bio_method = BIO_meth_new(bio_idx | BIO_TYPE_SOURCE_SINK, "urlprotocol bio");
     BIO_meth_set_write(p->url_bio_method, url_bio_bwrite);
     BIO_meth_set_read(p->url_bio_method, url_bio_bread);
     BIO_meth_set_puts(p->url_bio_method, url_bio_bputs);
@@ -628,6 +631,7 @@ static av_cold void init_bio_method(URLContext *h)
     BIO_set_data(bio, p);
 
     SSL_set_bio(p->ssl, bio, bio);
+    return 0;
 }
 
 static void openssl_info_callback(const SSL *ssl, int where, int ret) {
@@ -822,7 +826,9 @@ static int dtls_start(URLContext *h, const char *url, int flags, AVDictionary **
     SSL_set_options(p->ssl, SSL_OP_NO_QUERY_MTU);
     SSL_set_mtu(p->ssl, p->tls_shared.mtu);
     DTLS_set_link_mtu(p->ssl, p->tls_shared.mtu);
-    init_bio_method(h);
+    ret = init_bio_method(h);
+    if (ret < 0)
+        goto fail;
 
     if (p->tls_shared.use_external_udp != 1) {
         if ((ret = ff_tls_open_underlying(&p->tls_shared, h, url, options)) < 0) {
@@ -911,7 +917,9 @@ static int tls_open(URLContext *h, const char *uri, int flags, AVDictionary **op
     }
     SSL_set_ex_data(p->ssl, 0, p);
     SSL_CTX_set_info_callback(p->ctx, openssl_info_callback);
-    init_bio_method(h);
+    ret = init_bio_method(h);
+    if (ret < 0)
+        goto fail;
     if (!c->listen && !c->numerichost)
         SSL_set_tlsext_host_name(p->ssl, c->host);
     ret = c->listen ? SSL_accept(p->ssl) : SSL_connect(p->ssl);
-- 
2.39.5 (Apple Git-154)

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