/**
* \return 0 if there is an error, value of protocol elsewhere
*/
unsigned char get_proto_version_from_packet(const unsigned char *dgram,
size_t dgram_size)
{
nufw_to_nuauth_message_header_t *header;
if (dgram_size < sizeof(nufw_to_nuauth_message_header_t)) {
return 0;
}
/* Check protocol version */
header = (nufw_to_nuauth_message_header_t *) dgram;
/* Is protocol supported */
if (check_protocol_version(NUFW_PROTO, header->protocol_version) == NU_EXIT_OK) {
return header->protocol_version;
} else {
return 0;
}
}
static gboolean
handle_rx_packet (GstPluginLoader * l,
guint pack_type, guint32 tag, guint8 * payload, guint payload_len)
{
gboolean res = TRUE;
switch (pack_type) {
case PACKET_EXIT:
gst_poll_fd_ctl_read (l->fdset, &l->fd_r, FALSE);
if (l->is_child) {
/* Respond */
put_packet (l, PACKET_EXIT, 0, NULL, 0);
}
l->rx_done = TRUE;
return TRUE;
case PACKET_LOAD_PLUGIN:{
if (!l->is_child)
return TRUE;
/* Payload is the filename to load */
res = do_plugin_load (l, (gchar *) payload, tag);
break;
}
case PACKET_PLUGIN_DETAILS:{
gchar *tmp = (gchar *) payload;
PendingPluginEntry *entry = NULL;
GList *cur;
GST_DEBUG_OBJECT (l->registry,
"Received plugin details from child w/ tag %u. %d bytes info",
tag, payload_len);
/* Assume that tagged details come back in the order
* we requested, and delete anything before (but not
* including) this one */
cur = l->pending_plugins;
while (cur) {
PendingPluginEntry *e = (PendingPluginEntry *) (cur->data);
if (e->tag > tag)
break;
if (e->tag == tag) {
entry = e;
break;
} else {
cur = g_list_delete_link (cur, cur);
g_free (e->filename);
g_slice_free (PendingPluginEntry, e);
}
}
l->pending_plugins = cur;
if (cur == NULL)
l->pending_plugins_tail = NULL;
if (payload_len > 0) {
GstPlugin *newplugin = NULL;
if (!_priv_gst_registry_chunks_load_plugin (l->registry, &tmp,
tmp + payload_len, &newplugin)) {
/* Got garbage from the child, so fail and trigger replay of plugins */
GST_ERROR_OBJECT (l->registry,
"Problems loading plugin details with tag %u from scanner", tag);
return FALSE;
}
newplugin->flags &= ~GST_PLUGIN_FLAG_CACHED;
GST_LOG_OBJECT (l->registry,
"marking plugin %p as registered as %s", newplugin,
newplugin->filename);
newplugin->registered = TRUE;
/* We got a set of plugin details - remember it for later */
l->got_plugin_details = TRUE;
} else if (entry != NULL) {
/* Create a blacklist entry for this file to prevent scanning every time */
plugin_loader_create_blacklist_plugin (l, entry);
l->got_plugin_details = TRUE;
}
if (entry != NULL) {
g_free (entry->filename);
g_slice_free (PendingPluginEntry, entry);
}
/* Remove the plugin entry we just loaded */
cur = l->pending_plugins;
if (cur != NULL)
cur = g_list_delete_link (cur, cur);
l->pending_plugins = cur;
if (cur == NULL)
l->pending_plugins_tail = NULL;
break;
}
case PACKET_SYNC:
if (l->is_child) {
/* Respond with our reply - also a sync */
put_packet (l, PACKET_SYNC, tag, NULL, 0);
GST_LOG ("Got SYNC in child - replying");
} else
l->rx_got_sync = TRUE;
break;
case PACKET_VERSION:
if (l->is_child) {
/* Respond with our reply - a version packet, with the version */
const gint version_len =
sizeof (guint32) + GST_MAGIC_BINARY_VERSION_LEN;
guint8 version_info[sizeof (guint32) + GST_MAGIC_BINARY_VERSION_LEN];
memset (version_info, 0, version_len);
GST_WRITE_UINT32_BE (version_info, loader_protocol_version);
memcpy (version_info + sizeof (guint32), GST_MAGIC_BINARY_VERSION_STR,
strlen (GST_MAGIC_BINARY_VERSION_STR));
put_packet (l, PACKET_VERSION, tag, version_info, version_len);
GST_LOG ("Got VERSION in child - replying %u", loader_protocol_version);
} else {
res = check_protocol_version (l, payload, payload_len);
}
break;
default:
return FALSE; /* Invalid packet -> something is wrong */
}
return res;
}
