Merged silc_1_1_branch to trunk.
[silc.git] / lib / silcclient / command_reply.c
index 0e952e9fff8068c9768a5d8854bc78c2ee1ba9c4..61e4d73a082dea7df0a86f0d6791a9576612b313 100644 (file)
@@ -4,7 +4,7 @@
 
   Author: Pekka Riikonen <priikone@silcnet.org>
 
-  Copyright (C) 1997 - 2006 Pekka Riikonen
+  Copyright (C) 1997 - 2007 Pekka Riikonen
 
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -42,7 +42,7 @@ do {                                                          \
   SILC_LOG_DEBUG(("%s", silc_get_command_name(cmd->cmd)));             \
   if (cmd->error != SILC_STATUS_OK) {                                  \
     if (cmd->verbose)                                                  \
-      SAY(cmd->conn->client, cmd->conn, SILC_CLIENT_MESSAGE_ERROR,     \
+      SAY(cmd->conn->client, cmd->conn, SILC_CLIENT_MESSAGE_COMMAND_ERROR, \
          msg "%s", silc_get_status_message(cmd->error));               \
     ERROR_CALLBACK(cmd->error);                                                \
     silc_client_command_process_error(cmd, state_context, cmd->error); \
@@ -69,6 +69,7 @@ static inline void
 silc_client_command_callback(SilcClientCommandContext cmd, ...)
 {
   SilcClientCommandReplyCallback cb;
+  SilcList list;
   va_list ap, cp;
 
   va_start(ap, cmd);
@@ -83,8 +84,9 @@ silc_client_command_callback(SilcClientCommandContext cmd, ...)
   }
 
   /* Reply callback */
-  silc_list_start(cmd->reply_callbacks);
-  while ((cb = silc_list_get(cmd->reply_callbacks)))
+  list = cmd->reply_callbacks;
+  silc_list_start(list);
+  while ((cb = silc_list_get(list)))
     if (!cb->do_not_call) {
       silc_va_copy(cp, ap);
       cb->do_not_call = !cb->reply(cmd->conn->client, cmd->conn, cmd->cmd,
@@ -104,10 +106,11 @@ static void silc_client_command_process_error(SilcClientCommandContext cmd,
   SilcClient client = cmd->conn->client;
   SilcClientConnection conn = cmd->conn;
   SilcArgumentPayload args = silc_command_get_args(payload);
-  SilcClientEntry client_entry;
   SilcID id;
 
   if (cmd->error == SILC_STATUS_ERR_NO_SUCH_CLIENT_ID) {
+    SilcClientEntry client_entry;
+
     /* Remove unknown client entry from cache */
     if (!silc_argument_get_decoded(args, 2, SILC_ARGUMENT_ID, &id, NULL))
       return;
@@ -118,6 +121,38 @@ static void silc_client_command_process_error(SilcClientCommandContext cmd,
       silc_client_del_client(client, conn, client_entry);
       silc_client_unref_client(client, conn, client_entry);
     }
+    return;
+  }
+
+  if (cmd->error == SILC_STATUS_ERR_NO_SUCH_CHANNEL_ID) {
+    SilcChannelEntry channel;
+
+    /* Remove unknown channel entry from cache */
+    if (!silc_argument_get_decoded(args, 2, SILC_ARGUMENT_ID, &id, NULL))
+      return;
+
+    channel = silc_client_get_channel_by_id(client, conn, &id.u.channel_id);
+    if (channel) {
+      silc_client_empty_channel(client, conn, channel);
+      silc_client_del_channel(client, conn, channel);
+      silc_client_unref_channel(client, conn, channel);
+    }
+    return;
+  }
+
+  if (cmd->error == SILC_STATUS_ERR_NO_SUCH_SERVER_ID) {
+    SilcServerEntry server_entry;
+
+    /* Remove unknown server entry from cache */
+    if (!silc_argument_get_decoded(args, 2, SILC_ARGUMENT_ID, &id, NULL))
+      return;
+
+    server_entry = silc_client_get_server_by_id(client, conn, &id.u.server_id);
+    if (server_entry) {
+      silc_client_del_server(client, conn, server_entry);
+      silc_client_unref_server(client, conn, server_entry);
+    }
+    return;
   }
 }
 
@@ -164,7 +199,10 @@ SILC_FSM_STATE(silc_client_command_reply)
     return SILC_FSM_FINISH;
   }
 
-  /* Signal command thread that command reply has arrived */
+  /* Signal command thread that command reply has arrived.  We continue
+     command reply processing synchronously because we save the command
+     payload into state context.  No other reply may arrive to this command
+     while we're processing this reply. */
   silc_fsm_set_state_context(&cmd->thread, payload);
   silc_fsm_next(&cmd->thread, silc_client_command_reply_process);
   silc_fsm_continue_sync(&cmd->thread);
@@ -183,7 +221,7 @@ SILC_FSM_STATE(silc_client_command_reply_wait)
   /** Wait for command reply */
   silc_fsm_set_state_context(fsm, NULL);
   silc_fsm_next_later(fsm, silc_client_command_reply_timeout,
-                     cmd->cmd != SILC_COMMAND_PING ? 25 : 60, 0);
+                     cmd->cmd != SILC_COMMAND_PING ? 40 : 60, 0);
   return SILC_FSM_WAIT;
 }
 
@@ -198,6 +236,8 @@ SILC_FSM_STATE(silc_client_command_reply_timeout)
   if (conn->internal->disconnected) {
     SILC_LOG_DEBUG(("Command %s canceled", silc_get_command_name(cmd->cmd)));
     silc_list_del(conn->internal->pending_commands, cmd);
+    if (!cmd->called)
+      ERROR_CALLBACK(SILC_STATUS_ERR_TIMEDOUT);
     return SILC_FSM_FINISH;
   }
 
@@ -443,6 +483,8 @@ SILC_FSM_STATE(silc_client_command_reply_whois)
                              nickname, username, realname, mode);
   }
 
+  silc_rwlock_wrlock(client_entry->internal.lock);
+
   if (fingerprint && fingerprint_len == sizeof(client_entry->fingerprint))
     memcpy(client_entry->fingerprint, fingerprint, fingerprint_len);
 
@@ -454,6 +496,8 @@ SILC_FSM_STATE(silc_client_command_reply_whois)
     client_entry->attrs = silc_attribute_payload_parse(tmp, len);
   }
 
+  silc_rwlock_unlock(client_entry->internal.lock);
+
   /* Parse channel and channel user mode list */
   if (has_channels) {
     channel_list = silc_channel_payload_parse_list(silc_buffer_data(&channels),
@@ -470,7 +514,7 @@ SILC_FSM_STATE(silc_client_command_reply_whois)
 
   silc_client_unref_client(client, conn, client_entry);
   if (has_channels) {
-    silc_dlist_uninit(channel_list);
+    silc_channel_payload_list_free(channel_list);
     silc_free(umodes);
   }
 
@@ -615,7 +659,7 @@ SILC_FSM_STATE(silc_client_command_reply_identify)
     channel_entry = silc_client_get_channel_by_id(client, conn,
                                                  &id.u.channel_id);
     if (!channel_entry) {
-      SILC_LOG_DEBUG(("Adding new channel entry (IDENTIFY"));
+      SILC_LOG_DEBUG(("Adding new channel entry (IDENTIFY)"));
 
       if (!name) {
        ERROR_CALLBACK(SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
@@ -633,7 +677,8 @@ SILC_FSM_STATE(silc_client_command_reply_identify)
     }
 
     /* Notify application */
-    silc_client_command_callback(cmd, channel_entry, name, info);
+    silc_client_command_callback(cmd, channel_entry,
+                                channel_entry->channel_name, info);
     silc_client_unref_channel(client, conn, channel_entry);
     break;
   }
@@ -654,7 +699,7 @@ SILC_FSM_STATE(silc_client_command_reply_nick)
   SilcClient client = conn->client;
   SilcCommandPayload payload = state_context;
   SilcArgumentPayload args = silc_command_get_args(payload);
-  unsigned char *tmp, *nick, *idp;
+  unsigned char *nick, *idp;
   SilcUInt32 len, idp_len;
   SilcClientID old_client_id;
   SilcID id;
@@ -663,8 +708,6 @@ SILC_FSM_STATE(silc_client_command_reply_nick)
   CHECK_STATUS("Cannot set nickname: ");
   CHECK_ARGS(2, 3);
 
-  old_client_id = *conn->local_id;
-
   /* Take received Client ID */
   idp = silc_argument_get_arg_type(args, 2, &idp_len);
   if (!idp) {
@@ -683,31 +726,18 @@ SILC_FSM_STATE(silc_client_command_reply_nick)
     goto out;
   }
 
-  /* Normalize nickname */
-  tmp = silc_identifier_check(nick, len, SILC_STRING_UTF8, 128, NULL);
-  if (!tmp) {
-    ERROR_CALLBACK(SILC_STATUS_ERR_BAD_NICKNAME);
-    goto out;
-  }
+  silc_rwlock_wrlock(conn->local_entry->internal.lock);
 
-  /* Update the client entry */
-  silc_mutex_lock(conn->internal->lock);
-  if (!silc_idcache_update(conn->internal->client_cache,
-                          conn->internal->local_entry,
-                          &id.u.client_id, tmp, TRUE)) {
-    silc_free(tmp);
-    silc_mutex_unlock(conn->internal->lock);
+  /* Change the nickname */
+  old_client_id = *conn->local_id;
+  if (!silc_client_change_nickname(client, conn, conn->local_entry,
+                                  nick, &id.u.client_id, idp, idp_len)) {
     ERROR_CALLBACK(SILC_STATUS_ERR_BAD_NICKNAME);
+    silc_rwlock_unlock(conn->local_entry->internal.lock);
     goto out;
   }
-  silc_mutex_unlock(conn->internal->lock);
-  memset(conn->local_entry->nickname, 0, sizeof(conn->local_entry->nickname));
-  memcpy(conn->local_entry->nickname, nick, len);
-  conn->local_entry->nickname_normalized = tmp;
-  silc_buffer_enlarge(conn->internal->local_idp, idp_len);
-  silc_buffer_put(conn->internal->local_idp, idp, idp_len);
-  silc_client_nickname_format(client, conn, conn->local_entry);
-  silc_packet_set_ids(conn->stream, SILC_ID_CLIENT, conn->local_id, 0, NULL);
+
+  silc_rwlock_unlock(conn->local_entry->internal.lock);
 
   /* Notify application */
   silc_client_command_callback(cmd, conn->local_entry,
@@ -772,7 +802,8 @@ SILC_FSM_STATE(silc_client_command_reply_list)
   }
 
   /* Notify application */
-  silc_client_command_callback(cmd, channel_entry, name, topic, usercount);
+  silc_client_command_callback(cmd, channel_entry, channel_entry->channel_name,
+                              topic, usercount);
 
  out:
   silc_client_unref_channel(client, conn, channel_entry);
@@ -813,6 +844,8 @@ SILC_FSM_STATE(silc_client_command_reply_topic)
     goto out;
   }
 
+  silc_rwlock_wrlock(channel->internal.lock);
+
   /* Take topic */
   topic = silc_argument_get_arg_type(args, 3, &len);
   if (topic) {
@@ -820,6 +853,8 @@ SILC_FSM_STATE(silc_client_command_reply_topic)
     channel->topic = silc_memdup(topic, len);
   }
 
+  silc_rwlock_unlock(channel->internal.lock);
+
   /* Notify application */
   silc_client_command_callback(cmd, channel, channel->topic);
 
@@ -907,7 +942,7 @@ SILC_FSM_STATE(silc_client_command_reply_kill)
   /* Notify application */
   silc_client_command_callback(cmd, client_entry);
 
-  /* Remove the client from all channels and free it */
+  /* Remove the client */
   if (client_entry) {
     silc_client_remove_from_channels(client, conn, client_entry);
     silc_client_del_client(client, conn, client_entry);
@@ -1097,7 +1132,6 @@ SILC_FSM_STATE(silc_client_command_reply_join)
   const char *cipher;
   SilcBufferStruct client_id_list, client_mode_list, keyp;
   SilcHashTableList htl;
-  SilcDList chpks = NULL;
   SilcID id;
   int i;
 
@@ -1169,6 +1203,8 @@ SILC_FSM_STATE(silc_client_command_reply_join)
   }
   silc_buffer_set(&client_mode_list, tmp, len);
 
+  silc_rwlock_wrlock(channel->internal.lock);
+
   /* Add clients we received in the reply to the channel */
   for (i = 0; i < list_count; i++) {
     SilcUInt16 idp_len;
@@ -1187,17 +1223,22 @@ SILC_FSM_STATE(silc_client_command_reply_join)
 
     /* Get client entry */
     client_entry = silc_client_get_client_by_id(client, conn, &id.u.client_id);
-    if (!client_entry)
-      continue;
-
-    /* Join client to the channel */
-    silc_client_add_to_channel(client, conn, channel, client_entry, mode);
+    if (client_entry && client_entry->internal.valid) {
+      /* Join client to the channel */
+      silc_rwlock_wrlock(client_entry->internal.lock);
+      silc_client_add_to_channel(client, conn, channel, client_entry, mode);
+      silc_rwlock_unlock(client_entry->internal.lock);
+    }
     silc_client_unref_client(client, conn, client_entry);
 
-    if (!silc_buffer_pull(&client_id_list, idp_len))
+    if (!silc_buffer_pull(&client_id_list, idp_len)) {
+      silc_rwlock_unlock(channel->internal.lock);
       goto out;
-    if (!silc_buffer_pull(&client_mode_list, 4))
+    }
+    if (!silc_buffer_pull(&client_mode_list, 4)) {
+      silc_rwlock_unlock(channel->internal.lock);
       goto out;
+    }
   }
 
   /* Get hmac */
@@ -1205,16 +1246,17 @@ SILC_FSM_STATE(silc_client_command_reply_join)
   if (hmac) {
     if (!silc_hmac_alloc(hmac, NULL, &channel->internal.hmac)) {
       if (cmd->verbose)
-       SAY(client, conn, SILC_CLIENT_MESSAGE_ERROR,
+       SAY(client, conn, SILC_CLIENT_MESSAGE_COMMAND_ERROR,
            "Cannot join channel: Unsupported HMAC `%s'", hmac);
       ERROR_CALLBACK(SILC_STATUS_ERR_UNKNOWN_ALGORITHM);
+      silc_rwlock_unlock(channel->internal.lock);
       goto out;
     }
   }
 
   /* Get channel mode */
-  tmp = silc_argument_get_arg_type(args, 5, NULL);
-  if (tmp)
+  tmp = silc_argument_get_arg_type(args, 5, &len);
+  if (tmp && len == 4)
     SILC_GET32_MSB(mode, tmp);
   channel->mode = mode;
 
@@ -1251,23 +1293,22 @@ SILC_FSM_STATE(silc_client_command_reply_join)
   /* Get channel public key list */
   tmp = silc_argument_get_arg_type(args, 16, &len);
   if (tmp)
-    chpks = silc_argument_list_parse_decoded(tmp, len,
-                                            SILC_ARGUMENT_PUBLIC_KEY);
+    silc_client_channel_save_public_keys(channel, tmp, len, FALSE);
 
   /* Set current channel */
   conn->current_channel = channel;
 
-  cipher = (channel->internal.channel_key ?
-           silc_cipher_get_name(channel->internal.channel_key) : NULL);
+  silc_rwlock_unlock(channel->internal.lock);
+
+  cipher = (channel->internal.send_key ?
+           silc_cipher_get_name(channel->internal.send_key) : NULL);
   silc_hash_table_list(channel->user_list, &htl);
 
   /* Notify application */
-  silc_client_command_callback(cmd, channel_name, channel, mode, &htl,
+  silc_client_command_callback(cmd, channel->channel_name, channel, mode, &htl,
                               topic, cipher, hmac, channel->founder_key,
-                              chpks, channel->user_limit);
+                              channel->channel_pubkeys, channel->user_limit);
 
-  if (chpks)
-    silc_argument_list_free(chpks, SILC_ARGUMENT_PUBLIC_KEY);
   silc_hash_table_list_reset(&htl);
   silc_client_unref_channel(client, conn, channel);
 
@@ -1354,7 +1395,9 @@ SILC_FSM_STATE(silc_client_command_reply_umode)
   }
 
   SILC_GET32_MSB(mode, tmp);
+  silc_rwlock_wrlock(conn->local_entry->internal.lock);
   conn->local_entry->mode = mode;
+  silc_rwlock_unlock(conn->local_entry->internal.lock);
 
   /* Notify application */
   silc_client_command_callback(cmd, mode);
@@ -1380,7 +1423,6 @@ SILC_FSM_STATE(silc_client_command_reply_cmode)
   SilcChannelEntry channel;
   SilcUInt32 len;
   SilcPublicKey public_key = NULL;
-  SilcDList channel_pubkeys = NULL;
   SilcID id;
 
   /* Sanity checks */
@@ -1400,21 +1442,20 @@ SILC_FSM_STATE(silc_client_command_reply_cmode)
     goto out;
   }
 
+  /* Get founder public key */
+  tmp = silc_argument_get_arg_type(args, 4, &len);
+  if (tmp)
+    silc_public_key_payload_decode(tmp, len, &public_key);
+
   /* Get channel mode */
   tmp = silc_argument_get_arg_type(args, 3, &len);
   if (!tmp || len != 4) {
     ERROR_CALLBACK(SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
     goto out;
   }
-
-  /* Save the mode */
   SILC_GET32_MSB(mode, tmp);
-  channel->mode = mode;
 
-  /* Get founder public key */
-  tmp = silc_argument_get_arg_type(args, 4, &len);
-  if (tmp)
-    silc_public_key_payload_decode(tmp, len, &public_key);
+  silc_rwlock_wrlock(channel->internal.lock);
 
   /* Get user limit */
   tmp = silc_argument_get_arg_type(args, 6, &len);
@@ -1426,14 +1467,18 @@ SILC_FSM_STATE(silc_client_command_reply_cmode)
   /* Get channel public key(s) */
   tmp = silc_argument_get_arg_type(args, 5, &len);
   if (tmp)
-    channel_pubkeys =
-      silc_argument_list_parse_decoded(tmp, len, SILC_ARGUMENT_PUBLIC_KEY);
+    silc_client_channel_save_public_keys(channel, tmp, len, FALSE);
+  else if (channel->mode & SILC_CHANNEL_MODE_CHANNEL_AUTH)
+    silc_client_channel_save_public_keys(channel, NULL, 0, TRUE);
+
+  /* Save the mode */
+  channel->mode = mode;
+
+  silc_rwlock_unlock(channel->internal.lock);
 
   /* Notify application */
   silc_client_command_callback(cmd, channel, mode, public_key,
-                              channel_pubkeys, channel->user_limit);
-
-  silc_argument_list_free(channel_pubkeys, SILC_ARGUMENT_PUBLIC_KEY);
+                              channel->channel_pubkeys, channel->user_limit);
 
  out:
   if (public_key)
@@ -1499,9 +1544,11 @@ SILC_FSM_STATE(silc_client_command_reply_cumode)
   }
 
   /* Save the mode */
+  silc_rwlock_wrlock(channel->internal.lock);
   chu = silc_client_on_channel(channel, client_entry);
   if (chu)
     chu->mode = mode;
+  silc_rwlock_unlock(channel->internal.lock);
 
   /* Notify application */
   silc_client_command_callback(cmd, mode, channel, client_entry);
@@ -1578,6 +1625,9 @@ SILC_FSM_STATE(silc_client_command_reply_silcoper)
   CHECK_STATUS("Cannot change mode: ");
   CHECK_ARGS(1, 1);
 
+  /* Set user mode */
+  cmd->conn->local_entry->mode |= SILC_UMODE_ROUTER_OPERATOR;
+
   /* Notify application */
   silc_client_command_callback(cmd);
 
@@ -1597,6 +1647,9 @@ SILC_FSM_STATE(silc_client_command_reply_oper)
   CHECK_STATUS("Cannot change mode: ");
   CHECK_ARGS(1, 1);
 
+  /* Set user mode */
+  cmd->conn->local_entry->mode |= SILC_UMODE_SERVER_OPERATOR;
+
   /* Notify application */
   silc_client_command_callback(cmd);
 
@@ -1619,20 +1672,18 @@ SILC_FSM_STATE(silc_client_command_reply_detach)
   CHECK_STATUS("Cannot detach: ");
   CHECK_ARGS(1, 1);
 
-  /* Notify application */
-  silc_client_command_callback(cmd);
-
-#if 0
-  /* Generate the detachment data and deliver it to the client in the
-     detach client operation */
+  /* Get detachment data */
   detach = silc_client_get_detach_data(client, conn);
-  if (detach) {
-    client->internal->ops->detach(client, conn, silc_buffer_data(detach),
-                                 silc_buffer_len(detach));
-    silc_buffer_free(detach);
+  if (!detach) {
+    ERROR_CALLBACK(SILC_STATUS_ERR_RESOURCE_LIMIT);
+    goto out;
   }
-#endif /* 0 */
 
+  /* Notify application */
+  silc_client_command_callback(cmd, detach);
+  silc_buffer_free(detach);
+
+ out:
   silc_fsm_next(fsm, silc_client_command_reply_processed);
   return SILC_FSM_CONTINUE;
 }
@@ -1804,7 +1855,7 @@ SILC_FSM_STATE(silc_client_command_reply_users)
   SilcUInt16 idp_len, mode;
   SilcHashTableList htl;
   SilcBufferStruct client_id_list, client_mode_list;
-  SilcChannelEntry channel;
+  SilcChannelEntry channel = NULL;
   SilcClientEntry client_entry;
   SilcID id;
   int i;
@@ -1848,6 +1899,7 @@ SILC_FSM_STATE(silc_client_command_reply_users)
   /* Resolve users we do not know about */
   if (!cmd->resolved) {
     cmd->resolved = TRUE;
+    silc_client_unref_channel(client, conn, channel);
     SILC_FSM_CALL(silc_client_get_clients_by_list(
                          client, conn, list_count, &client_id_list,
                          silc_client_command_reply_users_resolved, cmd));
@@ -1864,6 +1916,8 @@ SILC_FSM_STATE(silc_client_command_reply_users)
 
   SILC_LOG_DEBUG(("channel %s, %d users", channel->channel_name, list_count));
 
+  silc_rwlock_wrlock(channel->internal.lock);
+
   /* Cache the received Client ID's and modes. */
   for (i = 0; i < list_count; i++) {
     SILC_GET16_MSB(idp_len, client_id_list.data + 2);
@@ -1877,22 +1931,32 @@ SILC_FSM_STATE(silc_client_command_reply_users)
     /* Save the client on this channel.  Unknown clients are ignored as they
        clearly do not exist since the resolving didn't find them. */
     client_entry = silc_client_get_client_by_id(client, conn, &id.u.client_id);
-    if (client_entry)
+    if (client_entry && client_entry->internal.valid) {
+      silc_rwlock_wrlock(client_entry->internal.lock);
       silc_client_add_to_channel(client, conn, channel, client_entry, mode);
+      silc_rwlock_unlock(client_entry->internal.lock);
+    }
     silc_client_unref_client(client, conn, client_entry);
 
-    if (!silc_buffer_pull(&client_id_list, idp_len))
+    if (!silc_buffer_pull(&client_id_list, idp_len)) {
+      silc_rwlock_unlock(channel->internal.lock);
       goto out;
-    if (!silc_buffer_pull(&client_mode_list, 4))
+    }
+    if (!silc_buffer_pull(&client_mode_list, 4)) {
+      silc_rwlock_unlock(channel->internal.lock);
       goto out;
+    }
   }
 
+  silc_rwlock_unlock(channel->internal.lock);
+
   /* Notify application */
   silc_hash_table_list(channel->user_list, &htl);
   silc_client_command_callback(cmd, channel, &htl);
   silc_hash_table_list_reset(&htl);
 
  out:
+  silc_client_unref_channel(client, conn, channel);
   silc_fsm_next(fsm, silc_client_command_reply_processed);
   return SILC_FSM_CONTINUE;
 }
@@ -1945,6 +2009,8 @@ SILC_FSM_STATE(silc_client_command_reply_getkey)
       goto out;
     }
 
+    silc_rwlock_wrlock(client_entry->internal.lock);
+
     /* Save fingerprint */
     if (!client_entry->fingerprint)
       silc_hash_make(conn->internal->sha1hash, tmp + 4, len - 4,
@@ -1954,6 +2020,8 @@ SILC_FSM_STATE(silc_client_command_reply_getkey)
       public_key = NULL;
     }
 
+    silc_rwlock_unlock(client_entry->internal.lock);
+
     /* Notify application */
     silc_client_command_callback(cmd, SILC_ID_CLIENT, client_entry,
                                 client_entry->public_key);
@@ -1966,11 +2034,15 @@ SILC_FSM_STATE(silc_client_command_reply_getkey)
       goto out;
     }
 
+    silc_rwlock_wrlock(server_entry->internal.lock);
+
     if (!server_entry->public_key) {
       server_entry->public_key = public_key;
       public_key = NULL;
     }
 
+    silc_rwlock_unlock(server_entry->internal.lock);
+
     /* Notify application */
     silc_client_command_callback(cmd, SILC_ID_SERVER, server_entry,
                                 server_entry->public_key);