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queue2: add temp-template property
Add a new temp-template property so that queue2 can securely allocate a temporary filename. Deprecate the temp-location property for setting the location but still use it to notify the allocated temp file.
This commit is contained in:
Wim Taymans
Sebastian Dröge
parent
4843c0947b
commit
affe0aef6f
1 changed files with 94 additions and 27 deletions
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@ -41,11 +41,17 @@
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* The default queue size limits are 100 buffers, 2MB of data, or
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* two seconds worth of data, whichever is reached first.
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*
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* If you set temp-location, the element will buffer data on the file
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* specified by it. By using this, it will buffer the entire
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* stream data on the file independently of the queue size limits, they
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* will only be used for buffering statistics.
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* If you set temp-tmpl to a value such as /tmp/gstreamer-XXXXXX, the element
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* will allocate a random free filename and buffer data in the file.
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* By using this, it will buffer the entire stream data on the file independently
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* of the queue size limits, they will only be used for buffering statistics.
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*
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* Since 0.10.24, setting the temp-location property with a filename is deprecated
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* because it's impossible to securely open a temporary file in this way. The
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* property will still be used to notify the application of the allocated
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* filename, though.
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*
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* Last reviewed on 2009-07-10 (0.10.24)
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*/
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#ifdef HAVE_CONFIG_H
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@ -63,6 +69,8 @@
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#define lseek _lseeki64
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#undef off_t
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#define off_t guint64
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#else
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#include <unistd.h>
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#endif
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static const GstElementDetails gst_queue_details = GST_ELEMENT_DETAILS ("Queue",
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@ -101,7 +109,7 @@ enum
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/* other defines */
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#define DEFAULT_BUFFER_SIZE 4096
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#define QUEUE_IS_USING_TEMP_FILE(queue) (queue->temp_location != NULL)
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#define QUEUE_IS_USING_TEMP_FILE(queue) ((queue)->temp_location_set || (queue)->temp_template != NULL)
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enum
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{
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@ -116,6 +124,7 @@ enum
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PROP_USE_RATE_ESTIMATE,
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PROP_LOW_PERCENT,
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PROP_HIGH_PERCENT,
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PROP_TEMP_TEMPLATE,
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PROP_TEMP_LOCATION
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};
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@ -204,6 +213,8 @@ struct _GstQueue
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GCond *item_del; /* signals space now available for writing */
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/* temp location stuff */
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gchar *temp_template;
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gboolean temp_location_set;
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gchar *temp_location;
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FILE *temp_file;
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guint64 writing_pos;
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@ -415,9 +426,16 @@ gst_queue_class_init (GstQueueClass * klass)
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"High threshold for buffering to finish", 0, 100,
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DEFAULT_HIGH_PERCENT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_TEMP_TEMPLATE,
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g_param_spec_string ("temp-template", "Temporary File Template",
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"File template to store temporary files in, should contain directory "
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"and XXXXXX. (NULL == disabled)",
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NULL, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_TEMP_LOCATION,
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g_param_spec_string ("temp-location", "Temporary File Location",
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"Location of a temporary file to store data in",
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"Location to store temporary files in (Deprecated: Only read this "
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"property, use temp-tmpl to configure the name template)",
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NULL, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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gst_element_class_add_pad_template (gstelement_class,
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@ -495,8 +513,9 @@ gst_queue_init (GstQueue * queue, GstQueueClass * g_class)
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queue->queue = g_queue_new ();
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/* tempfile related */
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queue->temp_template = NULL;
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queue->temp_location = NULL;
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queue->temp_file = NULL;
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queue->temp_location_set = FALSE;
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GST_DEBUG_OBJECT (queue,
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"initialized queue's not_empty & not_full conditions");
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@ -524,7 +543,7 @@ gst_queue_finalize (GObject * object)
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g_timer_destroy (queue->out_timer);
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/* temp_file path cleanup */
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if (queue->temp_location != NULL)
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g_free (queue->temp_template);
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g_free (queue->temp_location);
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G_OBJECT_CLASS (parent_class)->finalize (object);
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@ -981,17 +1000,45 @@ gst_queue_read_item_from_file (GstQueue * queue)
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static gboolean
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gst_queue_open_temp_location_file (GstQueue * queue)
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{
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/* nothing to do */
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if (queue->temp_location == NULL)
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goto no_filename;
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gint fd = -1;
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gchar *name = NULL;
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GST_DEBUG_OBJECT (queue, "opening temp file %s", queue->temp_location);
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GST_DEBUG_OBJECT (queue, "opening temp file %s", queue->temp_template);
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/* we have two cases:
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* - temp_location was set to something !NULL (Deprecated). in this case we
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* open the specified filename.
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* - temp_template was set, allocate a filename and open that filename
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*/
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if (!queue->temp_location_set) {
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/* nothing to do */
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if (queue->temp_template == NULL)
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goto no_directory;
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/* make copy of the template, we don't want to change this */
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name = g_strdup (queue->temp_template);
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fd = g_mkstemp (name);
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if (fd == -1)
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goto mkstemp_failed;
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/* open the file for update/writing */
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queue->temp_file = fdopen (fd, "wb+");
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/* error creating file */
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if (queue->temp_file == NULL)
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goto open_failed;
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g_free (queue->temp_location);
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queue->temp_location = name;
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g_object_notify (G_OBJECT (queue), "temp-location");
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} else {
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/* open the file for update/writing, this is deprecated but we still need to
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* support it for API/ABI compatibility */
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queue->temp_file = g_fopen (queue->temp_location, "wb+");
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/* error creating file */
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if (queue->temp_file == NULL)
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goto open_failed;
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}
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queue->writing_pos = 0;
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queue->reading_pos = 0;
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@ -999,17 +1046,27 @@ gst_queue_open_temp_location_file (GstQueue * queue)
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return TRUE;
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/* ERRORS */
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no_filename:
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no_directory:
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{
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GST_ELEMENT_ERROR (queue, RESOURCE, NOT_FOUND,
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(_("No file name specified.")), (NULL));
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(_("No Temp directory specified.")), (NULL));
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return FALSE;
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}
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mkstemp_failed:
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{
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GST_ELEMENT_ERROR (queue, RESOURCE, OPEN_READ,
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(_("Could not create temp file \"%s\"."), queue->temp_template),
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GST_ERROR_SYSTEM);
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g_free (name);
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return FALSE;
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}
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open_failed:
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{
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GST_ELEMENT_ERROR (queue, RESOURCE, OPEN_READ,
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(_("Could not open file \"%s\" for reading."), queue->temp_location),
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GST_ERROR_SYSTEM);
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(_("Could not open file \"%s\" for reading."), name), GST_ERROR_SYSTEM);
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g_free (name);
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if (fd != -1)
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close (fd);
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return FALSE;
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}
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}
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@ -1942,7 +1999,7 @@ gst_queue_change_state (GstElement * element, GstStateChange transition)
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g_cond_signal (queue->item_add);
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static void
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gst_queue_set_temp_location (GstQueue * queue, const gchar * location)
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gst_queue_set_temp_template (GstQueue * queue, const gchar * template)
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{
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GstState state;
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@ -1954,15 +2011,15 @@ gst_queue_set_temp_location (GstQueue * queue, const gchar * location)
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GST_OBJECT_UNLOCK (queue);
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/* set new location */
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g_free (queue->temp_location);
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queue->temp_location = g_strdup (location);
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g_free (queue->temp_template);
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queue->temp_template = g_strdup (template);
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return;
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/* ERROR */
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wrong_state:
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{
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GST_WARNING_OBJECT (queue, "setting temp-location in wrong state");
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GST_WARNING_OBJECT (queue, "setting temp-template property in wrong state");
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GST_OBJECT_UNLOCK (queue);
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}
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}
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@ -2005,8 +2062,15 @@ gst_queue_set_property (GObject * object,
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case PROP_HIGH_PERCENT:
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queue->high_percent = g_value_get_int (value);
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break;
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case PROP_TEMP_TEMPLATE:
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gst_queue_set_temp_template (queue, g_value_get_string (value));
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break;
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case PROP_TEMP_LOCATION:
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gst_queue_set_temp_location (queue, g_value_get_string (value));
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g_free (queue->temp_location);
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queue->temp_location = g_value_dup_string (value);
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/* you can set the property back to NULL to make it use the temp-tmpl
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* property. */
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queue->temp_location_set = queue->temp_location != NULL;
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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@ -2055,6 +2119,9 @@ gst_queue_get_property (GObject * object,
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case PROP_HIGH_PERCENT:
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g_value_set_int (value, queue->high_percent);
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break;
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case PROP_TEMP_TEMPLATE:
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g_value_set_string (value, queue->temp_template);
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break;
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case PROP_TEMP_LOCATION:
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g_value_set_string (value, queue->temp_location);
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break;
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