updates.
[silc.git] / apps / silcd / command.c
index e0477ee45f0ddaf6ca6b26ca6a6f73f2153154ab..a10f877b10bd850447b718e7a08f3139c5da2bca 100644 (file)
@@ -37,10 +37,6 @@ silc_server_command_send_status_data(SilcServerCommandContext cmd,
                                     unsigned int arg_type,
                                     unsigned char *arg,
                                     unsigned int arg_len);
-void silc_server_command_send_users(SilcServer server,
-                                   SilcSocketConnection sock,
-                                   SilcChannelEntry channel,
-                                   int pending);
 
 /* Server command list. */
 SilcServerCommand silc_command_list[] =
@@ -69,7 +65,8 @@ SilcServerCommand silc_command_list[] =
                  SILC_CF_LAG | SILC_CF_REG | SILC_CF_OPER),
   SILC_SERVER_CMD(close, CLOSE,
                  SILC_CF_LAG | SILC_CF_REG | SILC_CF_OPER),
-  SILC_SERVER_CMD(die, DIE, SILC_CF_LAG | SILC_CF_REG | SILC_CF_OPER),
+  SILC_SERVER_CMD(shutdown, SHUTDOWN, SILC_CF_LAG | SILC_CF_REG | 
+                 SILC_CF_OPER),
   SILC_SERVER_CMD(silcoper, SILCOPER,
                  SILC_CF_LAG | SILC_CF_REG | SILC_CF_SILC_OPER),
   SILC_SERVER_CMD(leave, LEAVE, SILC_CF_LAG | SILC_CF_REG),
@@ -395,9 +392,9 @@ silc_server_command_whois_parse(SilcServerCommandContext cmd,
     *client_id_count = 1;
 
     /* Take all ID's from the command packet */
-    if (argc > 3) {
-      for (k = 1, i = 4; i < argc + 1; i++) {
-       tmp = silc_argument_get_arg_type(cmd->args, i, &len);
+    if (argc > 1) {
+      for (k = 1, i = 1; i < argc; i++) {
+       tmp = silc_argument_get_arg_type(cmd->args, i + 3, &len);
        if (tmp) {
          *client_id = silc_realloc(*client_id, sizeof(**client_id) *
                                    (*client_id_count + 1));
@@ -540,25 +537,15 @@ silc_server_command_whois_send_reply(SilcServerCommandContext cmd,
       
       SILC_PUT32_MSB((time(NULL) - entry->data.last_receive), idle);
       
-      /* XXX */
-      if (entry->userinfo)
-       packet = 
-         silc_command_reply_payload_encode_va(SILC_COMMAND_WHOIS,
-                                              status, ident, 5, 
-                                              2, idp->data, idp->len,
-                                              3, nh, strlen(nh),
-                                              4, uh, strlen(uh),
-                                              5, entry->userinfo, 
-                                              strlen(entry->userinfo),
-                                              7, idle, 4);
-      else
-       packet = 
-         silc_command_reply_payload_encode_va(SILC_COMMAND_WHOIS,
-                                              status, ident, 4, 
-                                              2, idp->data, idp->len,
-                                              3, nh, strlen(nh),
-                                              4, uh, strlen(uh),
-                                              7, idle, 4);
+      packet = 
+       silc_command_reply_payload_encode_va(SILC_COMMAND_WHOIS,
+                                            status, ident, 5, 
+                                            2, idp->data, idp->len,
+                                            3, nh, strlen(nh),
+                                            4, uh, strlen(uh),
+                                            5, entry->userinfo, 
+                                            strlen(entry->userinfo),
+                                            7, idle, 4);
     }
     
     silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY,
@@ -639,6 +626,10 @@ silc_server_command_whois_from_client(SilcServerCommandContext cmd)
     clients = silc_idlist_get_clients_by_nickname(server->local_list, 
                                                  nick, server_name,
                                                  &clients_count);
+    if (!clients)
+      clients = silc_idlist_get_clients_by_hash(server->local_list, 
+                                               nick, server->md5hash,
+                                               &clients_count);
   }
   
   /* Check global list as well */
@@ -658,6 +649,10 @@ silc_server_command_whois_from_client(SilcServerCommandContext cmd)
       clients = silc_idlist_get_clients_by_nickname(server->global_list, 
                                                    nick, server_name,
                                                    &clients_count);
+      if (!clients)
+       clients = silc_idlist_get_clients_by_hash(server->global_list, 
+                                                 nick, server->md5hash,
+                                                 &clients_count);
     }
   }
   
@@ -953,7 +948,7 @@ silc_server_command_identify_send_reply(SilcServerCommandContext cmd,
       
       if (!entry->username) {
        packet = silc_command_reply_payload_encode_va(SILC_COMMAND_IDENTIFY,
-                                                     SILC_STATUS_OK, ident, 2,
+                                                     status, ident, 2,
                                                      2, idp->data, idp->len, 
                                                      3, nh, strlen(nh));
       } else {
@@ -966,7 +961,7 @@ silc_server_command_identify_send_reply(SilcServerCommandContext cmd,
        }
       
        packet = silc_command_reply_payload_encode_va(SILC_COMMAND_IDENTIFY,
-                                                     SILC_STATUS_OK, ident, 3,
+                                                     status, ident, 3,
                                                      2, idp->data, idp->len, 
                                                      3, nh, strlen(nh),
                                                      4, uh, strlen(uh));
@@ -1051,6 +1046,10 @@ silc_server_command_identify_from_client(SilcServerCommandContext cmd)
     clients = silc_idlist_get_clients_by_nickname(server->local_list, 
                                                  nick, server_name,
                                                  &clients_count);
+    if (!clients)
+      clients = silc_idlist_get_clients_by_hash(server->local_list, 
+                                               nick, server->md5hash,
+                                               &clients_count);
   }
   
   /* Check global list as well */
@@ -1070,6 +1069,10 @@ silc_server_command_identify_from_client(SilcServerCommandContext cmd)
       clients = silc_idlist_get_clients_by_nickname(server->global_list, 
                                                    nick, server_name,
                                                    &clients_count);
+      if (!clients)
+       clients = silc_idlist_get_clients_by_hash(server->global_list, 
+                                                 nick, server->md5hash,
+                                                 &clients_count);
     }
   }
   
@@ -1278,6 +1281,9 @@ SILC_SERVER_CMD_FUNC(nick)
     goto out;
   }
 
+  if (strlen(nick) > 128)
+    nick[127] = '\0';
+
   /* Create new Client ID */
   silc_id_create_client_id(cmd->server->id, cmd->server->rng, 
                           cmd->server->md5hash, nick,
@@ -1379,9 +1385,13 @@ SILC_SERVER_CMD_FUNC(topic)
   channel = silc_idlist_find_channel_by_id(server->local_list, 
                                           channel_id, NULL);
   if (!channel) {
-    silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
-                                         SILC_STATUS_ERR_NO_SUCH_CHANNEL);
-    goto out;
+    channel = silc_idlist_find_channel_by_id(server->global_list, 
+                                            channel_id, NULL);
+    if (!channel) {
+      silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
+                                           SILC_STATUS_ERR_NO_SUCH_CHANNEL);
+      goto out;
+    }
   }
 
   if (argc > 1) {
@@ -1507,9 +1517,13 @@ SILC_SERVER_CMD_FUNC(invite)
   channel = silc_idlist_find_channel_by_id(server->local_list, 
                                           channel_id, NULL);
   if (!channel) {
-    silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
-                                         SILC_STATUS_ERR_NO_SUCH_CHANNEL);
-    goto out;
+    channel = silc_idlist_find_channel_by_id(server->global_list, 
+                                            channel_id, NULL);
+    if (!channel) {
+      silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
+                                           SILC_STATUS_ERR_NO_SUCH_CHANNEL);
+      goto out;
+    }
   }
 
   /* Check whether the sender of this command is on the channel. */
@@ -1573,20 +1587,30 @@ SILC_SERVER_CMD_FUNC(invite)
   silc_server_command_free(cmd);
 }
 
+typedef struct {
+  SilcServer server;
+  SilcSocketConnection sock;
+  char *signoff;
+} *QuitInternal;
+
 /* Quits connection to client. This gets called if client won't
    close the connection even when it has issued QUIT command. */
 
 SILC_TASK_CALLBACK(silc_server_command_quit_cb)
 {
-  SilcServer server = (SilcServer)context;
-  SilcSocketConnection sock = server->sockets[fd];
+  QuitInternal q = (QuitInternal)context;
 
   /* Free all client specific data, such as client entry and entires
      on channels this client may be on. */
-  silc_server_free_sock_user_data(server, sock);
+  silc_server_free_client_data(q->server, q->sock, q->sock->user_data,
+                              q->signoff);
+  q->sock->user_data = NULL;
 
   /* Close the connection on our side */
-  silc_server_close_connection(server, sock);
+  silc_server_close_connection(q->server, q->sock);
+
+  silc_free(q->signoff);
+  silc_free(q);
 }
 
 /* Quits SILC session. This is the normal way to disconnect client. */
@@ -1596,14 +1620,31 @@ SILC_SERVER_CMD_FUNC(quit)
   SilcServerCommandContext cmd = (SilcServerCommandContext)context;
   SilcServer server = cmd->server;
   SilcSocketConnection sock = cmd->sock;
+  QuitInternal q;
+  unsigned char *tmp = NULL;
+  unsigned int len = 0;
 
-  SILC_LOG_DEBUG(("Start"));
+  SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_QUIT, cmd, 0, 1);
+
+  if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
+    goto out;
+
+  /* Get destination ID */
+  tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
+  if (len > 128)
+    tmp = NULL;
+
+  q = silc_calloc(1, sizeof(*q));
+  q->server = server;
+  q->sock = sock;
+  q->signoff = tmp ? strdup(tmp) : NULL;
 
   /* We quit the connection with little timeout */
   silc_task_register(server->timeout_queue, sock->sock,
-                    silc_server_command_quit_cb, server,
-                    0, 300000, SILC_TASK_TIMEOUT, SILC_TASK_PRI_LOW);
+                    silc_server_command_quit_cb, (void *)q,
+                    0, 200000, SILC_TASK_TIMEOUT, SILC_TASK_PRI_LOW);
 
+ out:
   silc_server_command_free(cmd);
 }
 
@@ -1670,10 +1711,6 @@ SILC_SERVER_CMD_FUNC(info)
   silc_server_command_free(cmd);
 }
 
-SILC_SERVER_CMD_FUNC(connect)
-{
-}
-
 /* Server side of command PING. This just replies to the ping. */
 
 SILC_SERVER_CMD_FUNC(ping)
@@ -1713,70 +1750,6 @@ SILC_SERVER_CMD_FUNC(ping)
   silc_server_command_free(cmd);
 }
 
-SILC_SERVER_CMD_FUNC(oper)
-{
-}
-
-/* Assembles USERS command and executes it. This is called when client
-   joins to a channel and we wan't to send USERS command reply to the 
-   client. */
-
-void silc_server_command_send_users(SilcServer server,
-                                   SilcSocketConnection sock,
-                                   SilcChannelEntry channel,
-                                   int pending)
-{
-  SilcServerCommandContext cmd;
-  SilcBuffer buffer, idp;
-  SilcPacketContext *packet = silc_packet_context_alloc();
-
-  SILC_LOG_DEBUG(("Start"));
-
-  /* Create USERS command packet and process it. */
-  idp = silc_id_payload_encode(channel->id, SILC_ID_CHANNEL);
-  buffer = silc_command_payload_encode_va(SILC_COMMAND_USERS, 0, 1,
-                                         1, idp->data, idp->len);
-
-  packet->buffer = silc_buffer_copy(buffer);
-  packet->sock = sock;
-  packet->type = SILC_PACKET_COMMAND;
-
-  cmd = silc_server_command_alloc();
-  cmd->payload = silc_command_payload_parse(buffer);
-  if (!cmd->payload) {
-    silc_free(cmd);
-    silc_buffer_free(buffer);
-    silc_buffer_free(idp);
-    silc_packet_context_free(packet);
-    return;
-  }
-  cmd->args = silc_command_get_args(cmd->payload);
-  cmd->server = server;
-  cmd->sock = silc_socket_dup(sock);
-  cmd->packet = silc_packet_context_dup(packet);
-  cmd->pending = FALSE;
-
-  if (pending) {
-    /* If this function was called from pending command then instead of
-       processing the command now, register a pending command callback which
-       will process it after we've received the automatic USERS command 
-       reply which server will send in JOIN. */
-    silc_server_command_pending(server, SILC_COMMAND_USERS, 0, NULL,
-                               silc_server_command_users, cmd);
-    cmd->pending = TRUE;
-    silc_buffer_free(buffer);
-    silc_buffer_free(idp);
-    return;
-  }
-
-  /* Process USERS command. */
-  silc_server_command_users((void *)cmd);
-
-  silc_buffer_free(buffer);
-  silc_buffer_free(idp);
-  silc_packet_context_free(packet);
-}
-
 /* Internal routine to join channel. The channel sent to this function
    has been either created or resolved from ID lists. This joins the sent
    client to the channel. */
@@ -1790,11 +1763,11 @@ static void silc_server_command_join_channel(SilcServer server,
 {
   SilcSocketConnection sock = cmd->sock;
   unsigned char *tmp;
-  unsigned int tmp_len;
-  unsigned char *passphrase = NULL, mode[4], tmp2[4];
+  unsigned int tmp_len, user_count;
+  unsigned char *passphrase = NULL, mode[4], tmp2[4], tmp3[4];
   SilcClientEntry client;
   SilcChannelClientEntry chl;
-  SilcBuffer reply, chidp, clidp, keyp;
+  SilcBuffer reply, chidp, clidp, keyp, user_list, mode_list;
   unsigned short ident = silc_command_get_ident(cmd->payload);
 
   SILC_LOG_DEBUG(("Start"));
@@ -1877,14 +1850,15 @@ static void silc_server_command_join_channel(SilcServer server,
   }
 
   /* Generate new channel key as protocol dictates */
-  if (!created || !channel->channel_key)
+  if ((!created && silc_list_count(channel->user_list) > 0) || 
+      !channel->channel_key)
     silc_server_create_channel_key(server, channel, 0);
 
   /* Send the channel key. This is broadcasted to the channel but is not
      sent to the client who is joining to the channel. */
   silc_server_send_channel_key(server, NULL, channel, 
                               server->server_type == SILC_ROUTER ? 
-                              FALSE : server->standalone);
+                              FALSE : !server->standalone);
 
   /* Join the client to the channel by adding it to channel's user list.
      Add also the channel to client entry's channels list for fast cross-
@@ -1896,6 +1870,10 @@ static void silc_server_command_join_channel(SilcServer server,
   silc_list_add(channel->user_list, chl);
   silc_list_add(client->channels, chl);
 
+  /* Get users on the channel */
+  silc_server_get_users_on_channel(server, channel, &user_list, &mode_list,
+                                  &user_count);
+
   /* Encode Client ID Payload of the original client who wants to join */
   clidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
 
@@ -1903,34 +1881,46 @@ static void silc_server_command_join_channel(SilcServer server,
   chidp = silc_id_payload_encode(channel->id, SILC_ID_CHANNEL);
   SILC_PUT32_MSB(channel->mode, mode);
   SILC_PUT32_MSB(created, tmp2);
+  SILC_PUT32_MSB(user_count, tmp3);
   tmp = silc_id_id2str(channel->id, SILC_ID_CHANNEL);
   keyp = silc_channel_key_payload_encode(SILC_ID_CHANNEL_LEN, tmp, 
-                                        SILC_ID_CHANNEL_LEN,
+                                        strlen(channel->channel_key->
+                                               cipher->name),
                                         channel->channel_key->cipher->name,
                                         channel->key_len / 8, channel->key);
   silc_free(tmp);
   if (!channel->topic) {
     reply = 
       silc_command_reply_payload_encode_va(SILC_COMMAND_JOIN,
-                                          SILC_STATUS_OK, ident, 5,
+                                          SILC_STATUS_OK, ident, 9,
                                           2, channel->channel_name,
                                           strlen(channel->channel_name),
                                           3, chidp->data, chidp->len,
-                                          4, mode, 4,
-                                          5, tmp2, 4,
-                                          6, keyp->data, keyp->len);
+                                          4, clidp->data, clidp->len,
+                                          5, mode, 4,
+                                          6, tmp2, 4,
+                                          7, keyp->data, keyp->len,
+                                          12, tmp3, 4,
+                                          13, user_list->data, user_list->len,
+                                          14, mode_list->data, 
+                                          mode_list->len);
   } else {
     reply = 
       silc_command_reply_payload_encode_va(SILC_COMMAND_JOIN,
-                                          SILC_STATUS_OK, ident, 6
+                                          SILC_STATUS_OK, ident, 10
                                           2, channel->channel_name, 
                                           strlen(channel->channel_name),
                                           3, chidp->data, chidp->len,
-                                          4, mode, 4,
-                                          5, tmp2, 4,
-                                          6, keyp->data, keyp->len,
-                                          8, channel->topic, 
-                                          strlen(channel->topic));
+                                          4, clidp->data, clidp->len,
+                                          5, mode, 4,
+                                          6, tmp2, 4,
+                                          7, keyp->data, keyp->len,
+                                          10, channel->topic, 
+                                          strlen(channel->topic),
+                                          12, tmp3, 4,
+                                          13, user_list->data, user_list->len,
+                                          14, mode_list->data, 
+                                          mode_list->len);
   }
 
   /* Send command reply */
@@ -1952,14 +1942,12 @@ static void silc_server_command_join_channel(SilcServer server,
                                   SILC_ID_CLIENT_LEN);
   }
 
-  /* Send USERS command reply to the joined channel so the user sees who
-     is currently on the channel. */
-  silc_server_command_send_users(server, sock, channel, cmd->pending);
-
   silc_buffer_free(reply);
   silc_buffer_free(clidp);
   silc_buffer_free(chidp);
   silc_buffer_free(keyp);
+  silc_buffer_free(user_list);
+  silc_buffer_free(mode_list);
 
  out:
   if (passphrase)
@@ -1974,7 +1962,7 @@ SILC_SERVER_CMD_FUNC(join)
   SilcServerCommandContext cmd = (SilcServerCommandContext)context;
   SilcServer server = cmd->server;
   int tmp_len;
-  char *tmp, *channel_name = NULL, *cipher = NULL;
+  char *tmp, *channel_name = NULL, *cipher, *hmac;
   SilcChannelEntry channel;
   unsigned int umode = 0;
   int created = FALSE;
@@ -1991,6 +1979,9 @@ SILC_SERVER_CMD_FUNC(join)
   }
   channel_name = tmp;
 
+  if (strlen(channel_name) > 256)
+    channel_name[255] = '\0';
+
   if (silc_server_command_bad_chars(channel_name) == TRUE) {
     silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
                                          SILC_STATUS_ERR_BAD_CHANNEL);
@@ -2012,8 +2003,9 @@ SILC_SERVER_CMD_FUNC(join)
     goto out;
   }
 
-  /* Get cipher name */
+  /* Get cipher and hmac name */
   cipher = silc_argument_get_arg_type(cmd->args, 4, NULL);
+  hmac = silc_argument_get_arg_type(cmd->args, 5, NULL);
 
   /* See if the channel exists */
   channel = silc_idlist_find_channel_by_name(server->local_list, 
@@ -2038,7 +2030,7 @@ SILC_SERVER_CMD_FUNC(join)
         the channel by ourselves. */
       if (server->standalone) {
        channel = silc_server_create_new_channel(server, server->id, cipher, 
-                                                channel_name, TRUE);
+                                                hmac, channel_name, TRUE);
        umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
        created = TRUE;
 
@@ -2079,7 +2071,7 @@ SILC_SERVER_CMD_FUNC(join)
        if (!channel) {
          /* Channel really does not exist, create it */
          channel = silc_server_create_new_channel(server, server->id, cipher, 
-                                                  channel_name, TRUE);
+                                                  hmac, channel_name, TRUE);
          umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
          created = TRUE;
        }
@@ -2103,7 +2095,7 @@ SILC_SERVER_CMD_FUNC(join)
       if (!channel) {
        /* Channel really does not exist, create it */
        channel = silc_server_create_new_channel(server, server->id, cipher, 
-                                                channel_name, TRUE);
+                                                hmac, channel_name, TRUE);
        umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
        created = TRUE;
       }
@@ -2279,9 +2271,13 @@ SILC_SERVER_CMD_FUNC(cmode)
   channel = silc_idlist_find_channel_by_id(server->local_list, 
                                           channel_id, NULL);
   if (!channel) {
-    silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
-                                         SILC_STATUS_ERR_NO_SUCH_CHANNEL);
-    goto out;
+    channel = silc_idlist_find_channel_by_id(server->global_list, 
+                                            channel_id, NULL);
+    if (!channel) {
+      silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
+                                           SILC_STATUS_ERR_NO_SUCH_CHANNEL);
+      goto out;
+    }
   }
 
   /* Check whether this client is on the channel */
@@ -2363,7 +2359,7 @@ SILC_SERVER_CMD_FUNC(cmode)
     if (!tmp) {
       if (!(channel->mode & SILC_CHANNEL_MODE_ULIMIT)) {
        silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
-                                             SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
+                                  SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
        goto out;
       }
     } else {
@@ -2384,7 +2380,7 @@ SILC_SERVER_CMD_FUNC(cmode)
       tmp = silc_argument_get_arg_type(cmd->args, 4, NULL);
       if (!tmp) {
        silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
-                                             SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
+                                  SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
        goto out;
       }
 
@@ -2409,7 +2405,7 @@ SILC_SERVER_CMD_FUNC(cmode)
       tmp = silc_argument_get_arg_type(cmd->args, 5, NULL);
       if (!tmp) {
        silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
-                                             SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
+                                  SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
        goto out;
       }
 
@@ -2436,7 +2432,7 @@ SILC_SERVER_CMD_FUNC(cmode)
       tmp = silc_argument_get_arg_type(cmd->args, 6, NULL);
       if (!tmp) {
        silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
-                                             SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
+                                  SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
        goto out;
       }
 
@@ -2456,32 +2452,26 @@ SILC_SERVER_CMD_FUNC(cmode)
   if (mode_mask & SILC_CHANNEL_MODE_CIPHER) {
     if (!(channel->mode & SILC_CHANNEL_MODE_CIPHER)) {
       /* Cipher to use protect the traffic */
-      unsigned int key_len = 128;
-      char *cp;
+      unsigned int key_len;
 
       /* Get cipher */
       tmp = silc_argument_get_arg_type(cmd->args, 8, NULL);
       if (!tmp) {
        silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
-                                             SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
+                                  SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
        goto out;
       }
 
-      cp = strchr(tmp, ':');
-      if (cp) {
-       key_len = atoi(cp);
-       *cp = '\0';
-      }
-
       /* XXX Duplicated code, make own function for this!! */
     
       /* Delete old cipher and allocate the new one */
       silc_cipher_free(channel->channel_key);
-      silc_cipher_alloc(tmp, &channel->channel_key);
-
-      key_len /= 8;
-      if (key_len > 32)
-       key_len = 32;
+      if (!silc_cipher_alloc(tmp, &channel->channel_key)) {
+       silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
+                                      SILC_STATUS_ERR_UNKNOWN_ALGORITHM);
+       goto out;
+      }
+      key_len = silc_cipher_get_key_len(channel->channel_key) / 8;
 
       /* Re-generate channel key */
       silc_server_create_channel_key(server, channel, key_len);
@@ -2531,9 +2521,14 @@ SILC_SERVER_CMD_FUNC(cmode)
       /* Delete old cipher and allocate default one */
       silc_cipher_free(channel->channel_key);
       if (!channel->cipher)
-       silc_cipher_alloc("twofish", &channel->channel_key);
-      else
-       silc_cipher_alloc(channel->cipher, &channel->channel_key);
+       silc_cipher_alloc("aes-256-cbc", &channel->channel_key);
+      else {
+       if (!silc_cipher_alloc(channel->cipher, &channel->channel_key)) {
+         silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
+                                 SILC_STATUS_ERR_UNKNOWN_ALGORITHM);
+         goto out;
+       }
+      }
 
       /* Re-generate channel key */
       silc_server_create_channel_key(server, channel, 0);
@@ -2636,9 +2631,13 @@ SILC_SERVER_CMD_FUNC(cumode)
   channel = silc_idlist_find_channel_by_id(server->local_list, 
                                           channel_id, NULL);
   if (!channel) {
-    silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
-                                         SILC_STATUS_ERR_NO_SUCH_CHANNEL);
-    goto out;
+    channel = silc_idlist_find_channel_by_id(server->global_list, 
+                                            channel_id, NULL);
+    if (!channel) {
+      silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
+                                           SILC_STATUS_ERR_NO_SUCH_CHANNEL);
+      goto out;
+    }
   }
 
   /* Check whether sender is on the channel */
@@ -2677,13 +2676,13 @@ SILC_SERVER_CMD_FUNC(cumode)
   tmp_id = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
   if (!tmp_id) {
     silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
-                                         SILC_STATUS_ERR_NO_CHANNEL_ID);
+                                         SILC_STATUS_ERR_NO_CLIENT_ID);
     goto out;
   }
   client_id = silc_id_payload_parse_id(tmp_id, tmp_len);
   if (!client_id) {
     silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
-                                         SILC_STATUS_ERR_NO_CHANNEL_ID);
+                                         SILC_STATUS_ERR_NO_CLIENT_ID);
     goto out;
   }
 
@@ -2794,25 +2793,317 @@ SILC_SERVER_CMD_FUNC(cumode)
 /* Server side of KICK command. Kicks client out of channel. */
 
 SILC_SERVER_CMD_FUNC(kick)
+{
+  SilcServerCommandContext cmd = (SilcServerCommandContext)context;
+  SilcServer server = cmd->server;
+  SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
+  SilcClientEntry target_client;
+  SilcChannelID *channel_id;
+  SilcClientID *client_id;
+  SilcChannelEntry channel;
+  SilcChannelClientEntry chl;
+  SilcBuffer idp;
+  unsigned int tmp_len;
+  unsigned char *tmp, *comment;
+
+  SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_LEAVE, cmd, 1, 3);
+
+  /* Get Channel ID */
+  tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
+  if (!tmp) {
+    silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
+                                         SILC_STATUS_ERR_NO_CHANNEL_ID);
+    goto out;
+  }
+  channel_id = silc_id_payload_parse_id(tmp, tmp_len);
+  if (!channel_id) {
+    silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
+                                         SILC_STATUS_ERR_NO_CHANNEL_ID);
+    goto out;
+  }
+
+  /* Get channel entry */
+  channel = silc_idlist_find_channel_by_id(server->local_list, 
+                                          channel_id, NULL);
+  if (!channel) {
+    channel = silc_idlist_find_channel_by_id(server->local_list, 
+                                            channel_id, NULL);
+    if (!channel) {
+      silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
+                                           SILC_STATUS_ERR_NO_SUCH_CHANNEL);
+      goto out;
+    }
+  }
+
+  /* Check whether sender is on the channel */
+  if (!silc_server_client_on_channel(client, channel)) {
+    silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
+                                         SILC_STATUS_ERR_NOT_ON_CHANNEL);
+    goto out;
+  }
+
+  /* Check that the kicker is channel operator or channel founder */
+  silc_list_start(channel->user_list);
+  while ((chl = silc_list_get(channel->user_list)) != SILC_LIST_END) {
+    if (chl->client == client) {
+      if (chl->mode == SILC_CHANNEL_UMODE_NONE) {
+       silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
+                                             SILC_STATUS_ERR_NO_CHANNEL_PRIV);
+       goto out;
+      }
+      break;
+    }
+  }
+  
+  /* Get target Client ID */
+  tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
+  if (!tmp) {
+    silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
+                                         SILC_STATUS_ERR_NO_CLIENT_ID);
+    goto out;
+  }
+  client_id = silc_id_payload_parse_id(tmp, tmp_len);
+  if (!client_id) {
+    silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
+                                         SILC_STATUS_ERR_NO_CLIENT_ID);
+    goto out;
+  }
+
+  /* Get target client's entry */
+  target_client = silc_idlist_find_client_by_id(server->local_list, 
+                                               client_id, NULL);
+  if (!target_client) {
+    target_client = silc_idlist_find_client_by_id(server->global_list, 
+                                                 client_id, NULL);
+  }
+
+  /* Check that the target client is not channel founder. Channel founder
+     cannot be kicked from the channel. */
+  silc_list_start(channel->user_list);
+  while ((chl = silc_list_get(channel->user_list)) != SILC_LIST_END) {
+    if (chl->client == target_client) {
+      if (chl->mode & SILC_CHANNEL_UMODE_CHANFO) {
+       silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
+                                 SILC_STATUS_ERR_NO_CHANNEL_FOPRIV);
+       goto out;
+      }
+      break;
+    }
+  }
+  
+  /* Check whether target client is on the channel */
+  if (!silc_server_client_on_channel(target_client, channel)) {
+    silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
+                                         SILC_STATUS_ERR_USER_NOT_ON_CHANNEL);
+    goto out;
+  }
+
+  /* Get comment */
+  tmp_len = 0;
+  comment = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
+  if (tmp_len > 128)
+    comment = NULL;
+
+  /* Send command reply to sender */
+  silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK, 
+                                       SILC_STATUS_OK);
+
+  /* Send KICKED notify to local clients on the channel */
+  idp = silc_id_payload_encode(target_client->id, SILC_ID_CLIENT);
+  silc_server_send_notify_to_channel(server, NULL, channel, FALSE,
+                                    SILC_NOTIFY_TYPE_KICKED, 
+                                    comment ? 2 : 1,
+                                    idp->data, idp->len,
+                                    comment, comment ? strlen(comment) : 0);
+  silc_buffer_free(idp);
+
+  /* Remove the client from the channel. If the channel does not exist
+     after removing the client then the client kicked itself of the channel
+     and we don't have to send anything after that. */
+  if (!silc_server_remove_from_one_channel(server, NULL, channel, 
+                                          target_client, FALSE))
+    goto out;
+
+  /* Send KICKED notify to primary route */
+  if (!server->standalone)
+    silc_server_send_notify_kicked(server, server->router->connection,
+                                  server->server_type == SILC_ROUTER ?
+                                  TRUE : FALSE, channel,
+                                  target_client->id, SILC_ID_CLIENT_LEN,
+                                  comment);
+
+  /* Re-generate channel key */
+  silc_server_create_channel_key(server, channel, 0);
+
+  /* Send the channel key to the channel. The key of course is not sent
+     to the client who joined the channel. */
+  silc_server_send_channel_key(server, target_client->connection, channel, 
+                              server->server_type == SILC_ROUTER ? 
+                              FALSE : !server->standalone);
+
+ out:
+  silc_server_command_free(cmd);
+}
+
+SILC_SERVER_CMD_FUNC(oper)
+{
+}
+
+SILC_SERVER_CMD_FUNC(silcoper)
 {
 }
 
+/* Server side command of CONNECT. Connects us to the specified remote
+   server or router. */
+
+SILC_SERVER_CMD_FUNC(connect)
+{
+  SilcServerCommandContext cmd = (SilcServerCommandContext)context;
+  SilcServer server = cmd->server;
+  SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
+  unsigned char *tmp;
+  unsigned int tmp_len;
+  unsigned int port = SILC_PORT;
+
+  SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_CONNECT, cmd, 1, 2);
+
+  if (!client || cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
+    goto out;
+
+  /* Check whether client has the permissions. */
+  if (client->mode == SILC_UMODE_NONE) {
+    silc_server_command_send_status_reply(cmd, SILC_COMMAND_CONNECT,
+                                         SILC_STATUS_ERR_NO_SERVER_PRIV);
+    goto out;
+  }
+
+  if (server->server_type == SILC_ROUTER && 
+      client->mode & SILC_UMODE_SERVER_OPERATOR) {
+    silc_server_command_send_status_reply(cmd, SILC_COMMAND_CONNECT,
+                                         SILC_STATUS_ERR_NO_ROUTER_PRIV);
+    goto out;
+  }
+
+  /* Get the remote server */
+  tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
+  if (!tmp) {
+    silc_server_command_send_status_reply(cmd, SILC_COMMAND_CONNECT,
+                                         SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
+    goto out;
+  }
+
+  /* Get port */
+  tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
+  if (tmp)
+    SILC_GET32_MSB(port, tmp);
+
+  /* Create the connection. It is done with timeout and is async. */
+  silc_server_create_connection(server, tmp, port);
+
+  /* Send reply to the sender */
+  silc_server_command_send_status_reply(cmd, SILC_COMMAND_CONNECT,
+                                       SILC_STATUS_OK);
+
+ out:
+  silc_server_command_free(cmd);
+}
+
 SILC_SERVER_CMD_FUNC(restart)
 {
 }
+
+/* Server side command of CLOSE. Closes connection to a specified server. */
  
 SILC_SERVER_CMD_FUNC(close)
 {
+  SilcServerCommandContext cmd = (SilcServerCommandContext)context;
+  SilcServer server = cmd->server;
+  SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
+  SilcServerEntry server_entry;
+  unsigned char *tmp;
+  unsigned int tmp_len;
+  unsigned char *name;
+  unsigned int port = SILC_PORT;
+
+  SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_CLOSE, cmd, 1, 2);
+
+  if (!client || cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
+    goto out;
+
+  /* Check whether client has the permissions. */
+  if (client->mode == SILC_UMODE_NONE) {
+    silc_server_command_send_status_reply(cmd, SILC_COMMAND_CLOSE,
+                                         SILC_STATUS_ERR_NO_SERVER_PRIV);
+    goto out;
+  }
+
+  /* Get the remote server */
+  name = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
+  if (!name) {
+    silc_server_command_send_status_reply(cmd, SILC_COMMAND_CLOSE,
+                                         SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
+    goto out;
+  }
+
+  /* Get port */
+  tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
+  if (tmp)
+    SILC_GET32_MSB(port, tmp);
+
+  server_entry = silc_idlist_find_server_by_conn(server->local_list,
+                                                name, port, NULL);
+  if (!server_entry) {
+    silc_server_command_send_status_reply(cmd, SILC_COMMAND_CLOSE,
+                                         SILC_STATUS_ERR_NO_SERVER_ID);
+    goto out;
+  }
+
+  /* Close the connection to the server */
+  silc_server_free_sock_user_data(server, server_entry->connection);
+  silc_server_disconnect_remote(server, server_entry->connection,
+                               "Server closed connection: "
+                               "Closed by operator");
+  
+  /* Send reply to the sender */
+  silc_server_command_send_status_reply(cmd, SILC_COMMAND_CLOSE,
+                                       SILC_STATUS_OK);
+
+ out:
+  silc_server_command_free(cmd);
 }
+
+/* Server side command of SHUTDOWN. Shutdowns the server and closes all
+   active connections. */
  
-SILC_SERVER_CMD_FUNC(die)
+SILC_SERVER_CMD_FUNC(shutdown)
 {
+  SilcServerCommandContext cmd = (SilcServerCommandContext)context;
+  SilcServer server = cmd->server;
+  SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
+
+  SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_SHUTDOWN, cmd, 0, 0);
+
+  if (!client || cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
+    goto out;
+
+  /* Check whether client has the permission. */
+  if (client->mode == SILC_UMODE_NONE) {
+    silc_server_command_send_status_reply(cmd, SILC_COMMAND_SHUTDOWN,
+                                         SILC_STATUS_ERR_NO_SERVER_PRIV);
+    goto out;
+  }
+
+  /* Then, gracefully, or not, bring the server down. */
+  silc_server_stop(server);
+
+  /* Send reply to the sender */
+  silc_server_command_send_status_reply(cmd, SILC_COMMAND_SHUTDOWN,
+                                       SILC_STATUS_OK);
+
+ out:
+  silc_server_command_free(cmd);
 }
  
-SILC_SERVER_CMD_FUNC(silcoper)
-{
-}
-
 /* Server side command of LEAVE. Removes client from a channel. */
 
 SILC_SERVER_CMD_FUNC(leave)
@@ -2846,9 +3137,12 @@ SILC_SERVER_CMD_FUNC(leave)
   /* Get channel entry */
   channel = silc_idlist_find_channel_by_id(server->local_list, id, NULL);
   if (!channel) {
-    silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
-                                         SILC_STATUS_ERR_NO_SUCH_CHANNEL);
-    goto out;
+    channel = silc_idlist_find_channel_by_id(server->global_list, id, NULL);
+    if (!channel) {
+      silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
+                                           SILC_STATUS_ERR_NO_SUCH_CHANNEL);
+      goto out;
+    }
   }
 
   /* Check whether this client is on the channel */
@@ -2920,14 +3214,12 @@ SILC_SERVER_CMD_FUNC(users)
   SilcServerCommandContext cmd = (SilcServerCommandContext)context;
   SilcServer server = cmd->server;
   SilcChannelEntry channel;
-  SilcChannelClientEntry chl;
   SilcChannelID *id;
   SilcBuffer packet;
   unsigned char *channel_id;
   unsigned int channel_id_len;
   SilcBuffer client_id_list;
   SilcBuffer client_mode_list;
-  SilcBuffer idp;
   unsigned char lc[4];
   unsigned int list_count = 0;
   unsigned short ident = silc_command_get_ident(cmd->payload);
@@ -2989,33 +3281,9 @@ SILC_SERVER_CMD_FUNC(users)
     }
   }
 
-  /* Assemble the lists now */
-
-  client_id_list = silc_buffer_alloc((SILC_ID_CLIENT_LEN + 4) * 
-                                    silc_list_count(channel->user_list));
-  silc_buffer_pull_tail(client_id_list, SILC_BUFFER_END(client_id_list));
-  client_mode_list = 
-    silc_buffer_alloc(4 * silc_list_count(channel->user_list));
-  silc_buffer_pull_tail(client_mode_list, SILC_BUFFER_END(client_mode_list));
-
-  silc_list_start(channel->user_list);
-  while ((chl = silc_list_get(channel->user_list)) != SILC_LIST_END) {
-    /* Client ID */
-    idp = silc_id_payload_encode(chl->client->id, SILC_ID_CLIENT);
-    silc_buffer_put(client_id_list, idp->data, idp->len);
-    silc_buffer_pull(client_id_list, idp->len);
-    silc_buffer_free(idp);
-
-    /* Client's mode on channel */
-    SILC_PUT32_MSB(chl->mode, client_mode_list->data);
-    silc_buffer_pull(client_mode_list, 4);
-
-    list_count++;
-  }
-  silc_buffer_push(client_id_list, 
-                  client_id_list->data - client_id_list->head);
-  silc_buffer_push(client_mode_list, 
-                  client_mode_list->data - client_mode_list->head);
+  /* Get the users list */
+  silc_server_get_users_on_channel(server, channel, &client_id_list,
+                                  &client_mode_list, &list_count);
 
   /* List count */
   SILC_PUT32_MSB(list_count, lc);