Added silc_server_remove_servers_by_server to remove servers
[silc.git] / apps / silcd / packet_receive.c
index 2ca1e630546f20a8d3ce8267f77d9673595f80b4..4e07b0ce40502355bbca0bb2b7f7580e33ee4c71 100644 (file)
@@ -218,10 +218,17 @@ void silc_server_notify(SilcServer server,
     chl->client = client;
     chl->channel = channel;
 
-    /* If this is the first one on the channel then it is the founder of
-       the channel. */
-    if (!silc_hash_table_count(channel->user_list))
-      chl->mode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
+    if (server->server_type != SILC_ROUTER ||
+       sock->type == SILC_SOCKET_TYPE_ROUTER) {
+      /* If this is the first one on the channel then it is the founder of
+        the channel. This is done on normal server and on router if this
+        notify is coming from router */
+      if (!silc_hash_table_count(channel->user_list)) {
+       SILC_LOG_DEBUG(("Client %s is founder on channel",
+                       silc_id_render(chl->client->id, SILC_ID_CLIENT)));
+       chl->mode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
+      }
+    }
 
     silc_hash_table_add(channel->user_list, client, chl);
     silc_hash_table_add(client->channels, channel, chl);
@@ -437,7 +444,7 @@ void silc_server_notify(SilcServer server,
     channel->topic = strdup(tmp);
 
     /* Send the same notify to the channel */
-    silc_server_packet_send_to_channel(server, sock, channel, packet->type, 
+    silc_server_packet_send_to_channel(server, NULL, channel, packet->type, 
                                       FALSE, packet->buffer->data, 
                                       packet->buffer->len, FALSE);
     silc_free(channel_id);
@@ -563,6 +570,38 @@ void silc_server_notify(SilcServer server,
     /* Check if mode changed */
     if (channel->mode == mode) {
       SILC_LOG_DEBUG(("Mode is changed already"));
+
+      /* If this mode change has founder mode then we'll enforce the
+        change so that the server gets the real founder public key */
+      if (server->server_type != SILC_SERVER &&
+         sock != SILC_PRIMARY_ROUTE(server) &&
+         mode & SILC_CHANNEL_MODE_FOUNDER_AUTH && channel->founder_key) {
+       SILC_LOG_DEBUG(("Sending founder public key to server"));
+       silc_server_send_notify_cmode(server, sock, FALSE, channel,
+                                     channel->mode, server->id,
+                                     SILC_ID_SERVER, channel->cipher,
+                                     channel->hmac_name,
+                                     channel->passphrase,
+                                     channel->founder_key);
+      }
+
+      /* If we received same mode from our primary check whether founder
+        mode and key in the notify is set.  We update the founder key
+        here since we may have wrong one */
+      if (server->server_type == SILC_SERVER &&
+         sock == SILC_PRIMARY_ROUTE(server) &&
+         mode & SILC_CHANNEL_MODE_FOUNDER_AUTH) {
+       SILC_LOG_DEBUG(("Founder public key received from primary router"));
+       tmp = silc_argument_get_arg_type(args, 6, &tmp_len);
+       if (!tmp)
+         break;
+
+       if (channel->founder_key)
+         silc_pkcs_public_key_free(channel->founder_key);
+       channel->founder_key = NULL;
+       silc_pkcs_public_key_decode(tmp, tmp_len, &channel->founder_key);
+      }
+
       break;
     }
 
@@ -848,7 +887,7 @@ void silc_server_notify(SilcServer server,
           founder at all on the channel. */
        if (client && !(channel->mode & SILC_CHANNEL_MODE_FOUNDER_AUTH)) {
          /* Force the mode to not have founder mode */
-         mode &= ~SILC_CHANNEL_UMODE_CHANFO;
+         chl->mode = mode &= ~SILC_CHANNEL_UMODE_CHANFO;
          silc_server_force_cumode_change(server, sock, channel, chl, mode);
          notify_sent = TRUE;
          break;
@@ -868,7 +907,7 @@ void silc_server_notify(SilcServer server,
                 silc_pkcs_public_key_compare(
                                        channel->founder_key,
                                        chl2->client->data.public_key))) {
-             mode &= ~SILC_CHANNEL_UMODE_CHANFO;
+             chl->mode = mode &= ~SILC_CHANNEL_UMODE_CHANFO;
              silc_server_force_cumode_change(server, sock, channel,
                                              chl, mode);
              notify_sent = TRUE;
@@ -883,30 +922,30 @@ void silc_server_notify(SilcServer server,
           is set on the channel now check whether this is the client that
           originally set the mode. */
 
-       /* Get public key that must be present in notify */
-       tmp = silc_argument_get_arg_type(args, 4, &tmp_len);
-       if (!tmp || !silc_pkcs_public_key_decode(tmp, tmp_len,
-                                                &founder_key)) {
-         mode &= ~SILC_CHANNEL_UMODE_CHANFO;
-         silc_server_force_cumode_change(server, sock, channel, chl, mode);
-         notify_sent = TRUE;
-         break;
-       }
-
        if (channel->founder_key) {
+         /* Get public key that must be present in notify */
+         tmp = silc_argument_get_arg_type(args, 4, &tmp_len);
+         if (!tmp || !silc_pkcs_public_key_decode(tmp, tmp_len,
+                                                  &founder_key)) {
+           chl->mode = mode &= ~SILC_CHANNEL_UMODE_CHANFO;
+           silc_server_force_cumode_change(server, sock, channel, chl, mode);
+           notify_sent = TRUE;
+           break;
+         }
+
          /* Now match the public key we have cached and public key sent.
             They must match. */
          if (client && client->data.public_key && 
              !silc_pkcs_public_key_compare(channel->founder_key,
                                            client->data.public_key)) {
-           mode &= ~SILC_CHANNEL_UMODE_CHANFO;
+           chl->mode = mode &= ~SILC_CHANNEL_UMODE_CHANFO;
            silc_server_force_cumode_change(server, sock, channel, chl, mode);
            notify_sent = TRUE;
            break;
          }
          if (!silc_pkcs_public_key_compare(channel->founder_key,
                                            founder_key)) {
-           mode &= ~SILC_CHANNEL_UMODE_CHANFO;
+           chl->mode = mode &= ~SILC_CHANNEL_UMODE_CHANFO;
            silc_server_force_cumode_change(server, sock, channel, chl, mode);
            notify_sent = TRUE;
            break;
@@ -934,7 +973,9 @@ void silc_server_notify(SilcServer server,
        break;
       }
 
-      SILC_LOG_DEBUG(("Changing the channel user mode"));
+      SILC_LOG_DEBUG(("Changing %s channel user mode",
+                     chl->client->nickname ? chl->client->nickname :
+                     (unsigned char *)""));
 
       /* Change the mode */
       chl->mode = mode;
@@ -1126,6 +1167,13 @@ void silc_server_notify(SilcServer server,
       /* Re-announce our clients on the channel as the ID has changed now */
       silc_server_announce_get_channel_users(server, channel, &modes, &users,
                                             &users_modes);
+      if (users) {
+       silc_buffer_push(users, users->data - users->head);
+       silc_server_packet_send(server, sock,
+                               SILC_PACKET_NOTIFY, SILC_PACKET_FLAG_LIST,
+                               users->data, users->len, FALSE);
+       silc_buffer_free(users);
+      }
       if (modes) {
        silc_buffer_push(modes, modes->data - modes->head);
        silc_server_packet_send_dest(server, sock,
@@ -1134,13 +1182,6 @@ void silc_server_notify(SilcServer server,
                                     modes->data, modes->len, FALSE);
        silc_buffer_free(modes);
       }
-      if (users) {
-       silc_buffer_push(users, users->data - users->head);
-       silc_server_packet_send(server, sock,
-                               SILC_PACKET_NOTIFY, SILC_PACKET_FLAG_LIST,
-                               users->data, users->len, FALSE);
-       silc_buffer_free(users);
-      }
       if (users_modes) {
        silc_buffer_push(users_modes, users_modes->data - users_modes->head);
        silc_server_packet_send_dest(server, sock,
@@ -1253,9 +1294,19 @@ void silc_server_notify(SilcServer server,
     }
     silc_free(server_id);
 
-    /* Free all client entries that this server owns as they will
-       become invalid now as well. */
-    silc_server_remove_clients_by_server(server, server_entry, TRUE);
+    /* Sending SERVER_SIGNOFF is not right way to signoff local connection */
+    if (SILC_IS_LOCAL(server_entry))
+      break;
+
+    /* Remove all servers that are originated from this server, and
+       remove the clients of those servers too. */
+    silc_server_remove_servers_by_server(server, server_entry, TRUE);
+
+    /* Remove the clients that this server owns as they will become
+       invalid now too. */
+    silc_server_remove_clients_by_server(server, server_entry,
+                                        server_entry, TRUE);
+    silc_server_backup_del(server, server_entry);
 
     /* Remove the server entry */
     silc_idlist_del_server(local ? server->local_list :
@@ -1382,10 +1433,10 @@ void silc_server_notify(SilcServer server,
 
       /* If the the client is not in local list we check global list */
       client = silc_idlist_find_client_by_id(server->global_list, 
-                                            client_id, TRUE, NULL);
+                                            client_id, TRUE, &cache);
       if (!client) {
        client = silc_idlist_find_client_by_id(server->local_list, 
-                                              client_id, TRUE, NULL);
+                                              client_id, TRUE, &cache);
        if (!client) {
          silc_free(client_id);
          goto out;
@@ -1429,7 +1480,8 @@ void silc_server_notify(SilcServer server,
          silc_free(client_id);
 
          /* Killer must be router operator */
-         if (!(client2->mode & SILC_UMODE_ROUTER_OPERATOR)) {
+         if (server->server_type != SILC_SERVER &&
+             !(client2->mode & SILC_UMODE_ROUTER_OPERATOR)) {
            SILC_LOG_DEBUG(("Killing is not allowed"));
            goto out;
          }
@@ -1448,10 +1500,25 @@ void silc_server_notify(SilcServer server,
                                       FALSE);
 
       /* Check if anyone is watching this nickname */
-      if (server->server_type == SILC_ROUTER)
-       silc_server_check_watcher_list(server, client, NULL,
-                                      SILC_NOTIFY_TYPE_KILLED);
+      silc_server_check_watcher_list(server, client, NULL,
+                                    SILC_NOTIFY_TYPE_KILLED);
+
+      /* Update statistics */
+      server->stat.clients--;
+      if (server->stat.cell_clients)
+       server->stat.cell_clients--;
+      SILC_OPER_STATS_UPDATE(client, server, SILC_UMODE_SERVER_OPERATOR);
+      SILC_OPER_STATS_UPDATE(client, router, SILC_UMODE_ROUTER_OPERATOR);
+
+      if (SILC_IS_LOCAL(client)) {
+       server->stat.my_clients--;
+       silc_schedule_task_del_by_context(server->schedule, client);
+       silc_idlist_del_data(client);
+       client->mode = 0;
+      }
 
+      client->data.status &= ~SILC_IDLIST_STATUS_REGISTERED;
+      cache->expire = SILC_ID_CACHE_EXPIRE_DEF;
       break;
     }
 
@@ -1489,12 +1556,6 @@ void silc_server_notify(SilcServer server,
       goto out;
     SILC_GET32_MSB(mode, tmp);
 
-    /* Check that mode changing is allowed. */
-    if (!silc_server_check_umode_rights(server, client, mode)) {
-      SILC_LOG_DEBUG(("UMODE change is not allowed"));
-      goto out;
-    }
-
     /* Remove internal resumed flag if client is marked detached now */
     if (mode & SILC_UMODE_DETACHED)
       client->data.status &= ~SILC_IDLIST_STATUS_RESUMED;
@@ -2434,6 +2495,12 @@ SilcServerEntry silc_server_new_server(SilcServer server,
       silc_server_announce_clients(server, 0, sock);
       silc_server_announce_channels(server, 0, sock);
     }
+
+    /* By default the servers connected to backup router are disabled
+       until backup router has become the primary */
+    if (server->server_type == SILC_BACKUP_ROUTER &&
+       sock->type == SILC_SOCKET_TYPE_SERVER)
+      idata->status |= SILC_IDLIST_STATUS_DISABLED;
   }
 
   return new_server;
@@ -2922,6 +2989,13 @@ void silc_server_new_channel(SilcServer server,
         users on the channel "joining" the channel. */
       silc_server_announce_get_channel_users(server, channel, &modes, &users,
                                             &users_modes);
+      if (users) {
+       silc_buffer_push(users, users->data - users->head);
+       silc_server_packet_send(server, sock,
+                               SILC_PACKET_NOTIFY, SILC_PACKET_FLAG_LIST,
+                               users->data, users->len, FALSE);
+       silc_buffer_free(users);
+      }
       if (modes) {
        silc_buffer_push(modes, modes->data - modes->head);
        silc_server_packet_send_dest(server, sock,
@@ -2930,13 +3004,6 @@ void silc_server_new_channel(SilcServer server,
                                     modes->data, modes->len, FALSE);
        silc_buffer_free(modes);
       }
-      if (users) {
-       silc_buffer_push(users, users->data - users->head);
-       silc_server_packet_send(server, sock,
-                               SILC_PACKET_NOTIFY, SILC_PACKET_FLAG_LIST,
-                               users->data, users->len, FALSE);
-       silc_buffer_free(users);
-      }
       if (users_modes) {
        silc_buffer_push(users_modes, users_modes->data - users_modes->head);
        silc_server_packet_send_dest(server, sock,
@@ -3719,6 +3786,7 @@ void silc_server_resume_client(SilcServer server,
                     server->global_list->clients, 
                     detached_client->nickname,
                     detached_client->id, detached_client, FALSE, NULL);
+    detached_client->data.status &= ~SILC_IDLIST_STATUS_LOCAL;
 
     /* Change the owner of the client if needed */
     if (detached_client->router != server_entry)