ttml: fix null deref on empty namespace uri

refs #29053 resf #29055 regression by 44879313ba ttml: fix null deref on empty uri
1 year ago · d16c61873f
2 changed files with 2 additions and 2 deletions
--- a/modules/codec/ttml/ttml.c
+++ b/modules/codec/ttml/ttml.c
@ -129,7 +129,7 @@ const char * tt_namespaces_GetPrefix( const tt_namespaces_t *nss,
 void tt_namespaces_Register( tt_namespaces_t *nss, const char *psz_prefix,
                             const char *psz_uri )
 {
-    if( tt_namespaces_GetPrefix( nss, psz_uri ) )
+    if( !psz_uri || tt_namespaces_GetPrefix( nss, psz_uri ) )
        return;
    struct tt_namespace_s *ns = malloc(sizeof(*ns));
    if( ns )
--- a/modules/demux/ttml.c
+++ b/modules/demux/ttml.c
@ -174,7 +174,7 @@ static int ReadTTML( demux_t* p_demux )
                break;

            case XML_READER_STARTELEM:
-                if( strcmp( psz_node_namespace, TT_NS ) ||
+                if( (psz_node_namespace && strcmp( psz_node_namespace, TT_NS )) ||
                    strcmp( tt_LocalName( psz_node_name ), "tt" ) ||
                    p_sys->p_rootnode != NULL )
                    return VLC_EGENERIC;