diff options
| -rw-r--r-- | gst/typefind/gsttypefindfunctions.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/gst/typefind/gsttypefindfunctions.c b/gst/typefind/gsttypefindfunctions.c index baef18e05..eec103429 100644 --- a/gst/typefind/gsttypefindfunctions.c +++ b/gst/typefind/gsttypefindfunctions.c @@ -5327,6 +5327,26 @@ vivo_type_find (GstTypeFind * tf, gpointer unused) /*** XDG MIME typefinder (to avoid false positives mostly) ***/ #ifdef USE_GIO +static gboolean +xdgmime_validate_name (const gchar * name) +{ + const gchar *s; + + if (G_UNLIKELY (!g_ascii_isalpha (*name))) { + return FALSE; + } + + /* FIXME: test name string more */ + s = &name[1]; + while (*s && (g_ascii_isalnum (*s) || strchr ("/-_.:+", *s) != NULL)) + s++; + if (G_UNLIKELY (*s != '\0')) { + return FALSE; + } + + return TRUE; +} + static void xdgmime_typefind (GstTypeFind * find, gpointer user_data) { @@ -5371,6 +5391,12 @@ xdgmime_typefind (GstTypeFind * find, gpointer user_data) return; } + if (!xdgmime_validate_name (mimetype)) { + GST_LOG ("Ignoring mimetype with invalid structure name"); + g_free (mimetype); + return; + } + /* Again, we mainly want the xdg typefinding to prevent false-positives on * non-media formats, so suggest the type with a probability that trumps * uncertain results of our typefinders, but not more than that. */ |