Assert that the client count is positive prior to decrementing it.

[silc.git] / apps / silcd / packet_receive.c

diff --git a/apps/silcd/packet_receive.c b/apps/silcd/packet_receive.c
index 9b990ff8d5fb587bec5a973171ec2e7400e9fd1d..06e5bcd9161431a807f2b264523c292a9198875a 100644 (file)
--- a/apps/silcd/packet_receive.c
+++ b/apps/silcd/packet_receive.c
@@ -20,6 +20,7 @@
 
 #include "serverincludes.h"
 #include "server_internal.h"
+#include <assert.h>
 
 /* Received notify packet. Server can receive notify packets from router.
    Server then relays the notify messages to clients if needed. */
@@ -326,6 +327,7 @@ static void silc_server_notify_process(SilcServer server,
       tmp_len = 128;
 
     /* Update statistics */
+       assert(server->stat.clients > 0);
     server->stat.clients--;
     if (server->stat.cell_clients)
       server->stat.cell_clients--;
@@ -356,6 +358,8 @@ static void silc_server_notify_process(SilcServer server,
     client->mode = 0;
     client->router = NULL;
     client->connection = NULL;
+    client->data.created = silc_time();
+    silc_dlist_del(server->expired_clients, client);
     silc_dlist_add(server->expired_clients, client);
     break;
 
@@ -1243,6 +1247,7 @@ static void silc_server_notify_process(SilcServer server,
            }
 
            /* Update statistics */
+               assert(server->stat.clients > 0);
            server->stat.clients--;
            if (server->stat.cell_clients)
              server->stat.cell_clients--;
@@ -1263,6 +1268,7 @@ static void silc_server_notify_process(SilcServer server,
              silc_server_del_from_watcher_list(server, client);
 
            /* Remove the client */
+           silc_dlist_del(server->expired_clients, client);
            silc_idlist_del_data(client);
            silc_idlist_del_client(local ? server->local_list :
                                   server->global_list, client);
@@ -1487,6 +1493,7 @@ static void silc_server_notify_process(SilcServer server,
       }
 
       /* Update statistics */
+         assert(server->stat.clients > 0);
       server->stat.clients--;
       if (server->stat.cell_clients)
        server->stat.cell_clients--;
@@ -1504,6 +1511,8 @@ static void silc_server_notify_process(SilcServer server,
       client->mode = 0;
       client->router = NULL;
       client->connection = NULL;
+      client->data.created = silc_time();
+      silc_dlist_del(server->expired_clients, client);
       silc_dlist_add(server->expired_clients, client);
       break;
     }
@@ -1664,6 +1673,7 @@ static void silc_server_notify_process(SilcServer server,
 
        silc_server_remove_from_channels(server, NULL, client, TRUE,
                                         NULL, TRUE, FALSE);
+       silc_dlist_del(server->expired_clients, client);
        silc_idlist_del_data(client);
        silc_idlist_del_client(server->global_list, client);
       }
@@ -2145,7 +2155,7 @@ SilcClientEntry silc_server_new_client(SilcServer server,
   if (silc_buffer_unformat(buffer,
                           SILC_STR_UI16_NSTRING_ALLOC(&nickname,
                                                       &nickname_len),
-                          SILC_STR_END)) {
+                          SILC_STR_END) >= 0) {
     if (nickname_len > 128) {
       nickname_len = 128;
       nickname[nickname_len - 1] = '\0';
@@ -3433,6 +3443,8 @@ void silc_server_resume_client(SilcServer server,
   SilcPublicKey public_key;
   const char *cipher, *hostname, *ip;
 
+  SILC_LOG_DEBUG(("Resuming client"));
+
   silc_socket_stream_get_info(silc_packet_stream_get_stream(sock),
                              NULL, &hostname, &ip, NULL);
 
@@ -3696,6 +3708,7 @@ void silc_server_resume_client(SilcServer server,
     /* Take new keys and stuff into use in the old entry */
     silc_idlist_del_data(detached_client);
     silc_idlist_add_data(detached_client, idata);
+    idata->public_key = NULL;
 
     if (detached_client->data.public_key) {
       /* Add the resumed client's public key back to repository. */
@@ -3712,6 +3725,7 @@ void silc_server_resume_client(SilcServer server,
     detached_client->data.status &= ~SILC_IDLIST_STATUS_RESUME_RES;
     detached_client->mode &= ~SILC_UMODE_DETACHED;
     server->stat.my_detached--;
+    silc_dlist_del(server->expired_clients, detached_client);
 
     /* We are finished - reset resuming client */
     detached_client->resuming_client = NULL;
@@ -3723,12 +3737,14 @@ void silc_server_resume_client(SilcServer server,
 
     /* Delete this current client entry since we're resuming to old one. */
     server->stat.my_clients--;
+       assert(server->stat.clients > 0);
     server->stat.clients--;
     if (server->stat.cell_clients)
       server->stat.cell_clients--;
     silc_server_remove_from_channels(server, NULL, client, FALSE,
                                     NULL, FALSE, FALSE);
     silc_server_del_from_watcher_list(server, client);
+    silc_dlist_del(server->expired_clients, client);
     if (!silc_idlist_del_client(server->local_list, client))
       silc_idlist_del_client(server->global_list, client);
     client = detached_client;
@@ -3807,14 +3823,17 @@ void silc_server_resume_client(SilcServer server,
       silc_buffer_free(nidp);
     }
 
-    /* Add the client again to the ID cache to get it to correct list */
-    if (!silc_idcache_del_by_context(server->local_list->clients, client,
-                                    NULL))
-      silc_idcache_del_by_context(server->global_list->clients, client, NULL);
-    silc_free(client->id);
-    *client->id = client_id;
-    silc_idcache_add(server->local_list->clients, nicknamec,
-                    client->id, client);
+    /* Update entry */
+    if (!silc_idcache_update_by_context(server->local_list->clients, client,
+                                       &client_id, NULL, FALSE))
+      silc_idcache_update_by_context(server->global_list->clients, client,
+                                    &client_id, NULL, FALSE);
+
+    /* Move entry to local list if it is in global list */
+    if (silc_idcache_find_by_context(server->global_list->clients, client,
+                                    &id_cache))
+      silc_idcache_move(server->global_list->clients,
+                       server->local_list->clients, id_cache);
 
     /* Send some nice info to the client */
     silc_server_send_connect_notifys(server, sock, client);
@@ -3975,15 +3994,18 @@ void silc_server_resume_client(SilcServer server,
        server_entry->server_type == SILC_ROUTER)
       local = FALSE;
 
-    /* Change the client to correct list. */
-    if (!silc_idcache_del_by_context(server->local_list->clients,
-                                    detached_client, NULL))
-      silc_idcache_del_by_context(server->global_list->clients,
-                                 detached_client, NULL);
-    silc_idcache_add(local && server->server_type == SILC_ROUTER ?
-                    server->local_list->clients :
-                    server->global_list->clients, nicknamec,
-                    detached_client->id, detached_client);
+    /* Move entry to correct list */
+    if (local && server->server_type == SILC_ROUTER) {
+      if (silc_idcache_find_by_context(server->global_list->clients,
+                                      detached_client, &id_cache))
+       silc_idcache_move(server->global_list->clients,
+                         server->local_list->clients, id_cache);
+    } else {
+      if (silc_idcache_find_by_context(server->local_list->clients,
+                                      detached_client, &id_cache))
+       silc_idcache_move(server->local_list->clients,
+                         server->global_list->clients, id_cache);
+    }
 
     /* Change the owner of the client */
     detached_client->router = server_entry;