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add security checks in cam init and close

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This commit is contained in:
Fraxinas 2017-07-18 17:11:15 +02:00
parent b95aafea6d
commit dbaf79e532
1 changed files with 24 additions and 9 deletions
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33
photobooth.c
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@ -599,6 +599,11 @@ void _play_event_sound (PhotoBoothPrivate *priv, sound_t sound)
static gboolean photo_booth_cam_init (CameraInfo **cam_info)
{
int retval;
if (*cam_info)
{
GST_ERROR_OBJECT (*cam_info, "tried to do cam_init before cam_info@%p was closed!", *cam_info);
return FALSE;
}
*cam_info = (CameraInfo*)malloc(sizeof(struct _CameraInfo));
if (!cam_info)
return FALSE;
@ -627,6 +632,11 @@ static gboolean photo_booth_cam_init (CameraInfo **cam_info)
static gboolean photo_booth_cam_close (CameraInfo **cam_info)
{
int retval;
if (*cam_info == NULL)
{
GST_ERROR ("tried to close cam when cam_info == NULL");
return FALSE;
}
g_mutex_lock (&(*cam_info)->mutex);
retval = gp_camera_exit((*cam_info)->camera, (*cam_info)->context);
GST_DEBUG ("gp_camera_exit returned %i", retval);
@ -690,21 +700,26 @@ static void photo_booth_capture_thread_func (PhotoBooth *pb)
if (state == CAPTURE_INIT || state == CAPTURE_FAILED && !pb->cam_info)
{
if (photo_booth_cam_init (&pb->cam_info))
if (pb->cam_info == NULL)
{
GST_INFO_OBJECT (pb, "photo_booth_cam_inited @ %p", pb->cam_info);
if (state == CAPTURE_FAILED)
if (photo_booth_cam_init (&pb->cam_info))
{
photo_booth_window_set_spinner (priv->win, FALSE);
GST_INFO_OBJECT (pb, "photo_booth_cam_inited @ %p", pb->cam_info);
if (state == CAPTURE_FAILED)
{
photo_booth_window_set_spinner (priv->win, FALSE);
}
}
//photo_booth_focus (pb->cam_info);
else {
gtk_label_set_text (priv->win->status, _("No camera connected!"));
GST_INFO_OBJECT (pb, "no camera info.");
}
}
if (pb->cam_info)
{
state = CAPTURE_VIDEO;
g_main_context_invoke (NULL, (GSourceFunc) photo_booth_preview, pb);
}
else {
gtk_label_set_text (priv->win->status, _("No camera connected!"));
GST_INFO_OBJECT (pb, "no camera info.");
}
timeout = 5000;
}
else if (state == CAPTURE_PAUSED)