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mmssrc: Check URI for validity and work around URI parsing bugs in libmms

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Fixes bug #617650.
This commit is contained in:
Sebastian Dröge 2010-05-06 09:48:00 +02:00
parent 7275c01c54
commit 42ac5097a0
1 changed files with 60 additions and 11 deletions
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71
ext/libmms/gstmms.c
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@ -67,6 +67,9 @@ static gboolean gst_mms_do_seek (GstBaseSrc * src, GstSegment * segment);
static GstFlowReturn gst_mms_create (GstPushSrc * psrc, GstBuffer ** buf);
static gboolean gst_mms_uri_set_uri (GstURIHandler * handler,
const gchar * uri);
static void
gst_mms_urihandler_init (GType mms_type)
{
@ -490,23 +493,20 @@ gst_mms_set_property (GObject * object, guint prop_id,
{
GstMMS *mmssrc = GST_MMS (object);
GST_OBJECT_LOCK (mmssrc);
switch (prop_id) {
case PROP_LOCATION:
if (mmssrc->uri_name) {
g_free (mmssrc->uri_name);
mmssrc->uri_name = NULL;
}
mmssrc->uri_name = g_value_dup_string (value);
gst_mms_uri_set_uri (GST_URI_HANDLER (mmssrc),
g_value_get_string (value));
break;
case PROP_CONNECTION_SPEED:
GST_OBJECT_LOCK (mmssrc);
mmssrc->connection_speed = g_value_get_uint (value) * 1000;
GST_OBJECT_UNLOCK (mmssrc);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
GST_OBJECT_UNLOCK (mmssrc);
}
static void
@ -564,20 +564,69 @@ gst_mms_uri_get_uri (GstURIHandler * handler)
return src->uri_name;
}
static gboolean
gst_mms_uri_set_uri (GstURIHandler * handler, const gchar * uri)
static gchar *
gst_mms_src_make_valid_uri (const gchar * uri)
{
gchar *protocol;
GstMMS *src = GST_MMS (handler);
const gchar *colon, *tmp;
gsize len;
if (!uri || !gst_uri_is_valid (uri))
return NULL;
protocol = gst_uri_get_protocol (uri);
if ((strcmp (protocol, "mms") != 0) && (strcmp (protocol, "mmsh") != 0) &&
(strcmp (protocol, "mmst") != 0) && (strcmp (protocol, "mmsu") != 0)) {
g_free (protocol);
return FALSE;
}
g_free (protocol);
g_object_set (src, "location", uri, NULL);
colon = strstr (uri, "://");
if (!colon)
return NULL;
tmp = colon + 3;
len = strlen (tmp);
if (len == 0)
return NULL;
/* libmms segfaults if there's no hostname or
* no / after the hostname
*/
colon = strstr (tmp, "/");
if (colon == tmp)
return NULL;
if (strstr (tmp, "/") == NULL) {
gchar *ret;
len = strlen (uri);
ret = g_malloc0 (len + 2);
memcpy (ret, uri, len);
ret[len] = '/';
return ret;
} else {
return g_strdup (uri);
}
}
static gboolean
gst_mms_uri_set_uri (GstURIHandler * handler, const gchar * uri)
{
GstMMS *src = GST_MMS (handler);
gchar *fixed_uri;
fixed_uri = gst_mms_src_make_valid_uri (uri);
if (!fixed_uri && uri)
return FALSE;
GST_OBJECT_LOCK (src);
if (src->uri_name)
g_free (src->uri_name);
src->uri_name = fixed_uri;
GST_OBJECT_UNLOCK (src);
return TRUE;
}