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-rw-r--r--ssl/ssl_rsa.c28
1 files changed, 21 insertions, 7 deletions
diff --git a/ssl/ssl_rsa.c b/ssl/ssl_rsa.c
index b0f75c913f91..82022470bfd7 100644
--- a/ssl/ssl_rsa.c
+++ b/ssl/ssl_rsa.c
@@ -841,7 +841,7 @@ static int serverinfo_srv_add_cb(SSL *s, unsigned int ext_type,
return 0; /* No extension found, don't send extension */
return 1; /* Send extension */
}
- return -1; /* No serverinfo data found, don't send
+ return 0; /* No serverinfo data found, don't send
* extension */
}
@@ -870,12 +870,26 @@ static int serverinfo_process_buffer(const unsigned char *serverinfo,
/* Register callbacks for extensions */
ext_type = (serverinfo[0] << 8) + serverinfo[1];
- if (ctx && !SSL_CTX_add_server_custom_ext(ctx, ext_type,
- serverinfo_srv_add_cb,
- NULL, NULL,
- serverinfo_srv_parse_cb,
- NULL))
- return 0;
+ if (ctx) {
+ int have_ext_cbs = 0;
+ size_t i;
+ custom_ext_methods *exts = &ctx->cert->srv_ext;
+ custom_ext_method *meth = exts->meths;
+
+ for (i = 0; i < exts->meths_count; i++, meth++) {
+ if (ext_type == meth->ext_type) {
+ have_ext_cbs = 1;
+ break;
+ }
+ }
+
+ if (!have_ext_cbs && !SSL_CTX_add_server_custom_ext(ctx, ext_type,
+ serverinfo_srv_add_cb,
+ NULL, NULL,
+ serverinfo_srv_parse_cb,
+ NULL))
+ return 0;
+ }
serverinfo += 2;
serverinfo_length -= 2;