updates.
[silc.git] / lib / silcclient / command.c
index f039aac0cdfc715e2031bb213a685a53440fc542..815c6cafabd86756b25b2aaacafe0ce0bc9a88c0 100644 (file)
@@ -32,12 +32,12 @@ SilcClientCommand silc_command_list[] =
   SILC_CLIENT_CMD(list, LIST, "LIST", SILC_CF_LAG | SILC_CF_REG, 2),
   SILC_CLIENT_CMD(topic, TOPIC, "TOPIC", SILC_CF_LAG | SILC_CF_REG, 3),
   SILC_CLIENT_CMD(invite, INVITE, "INVITE", SILC_CF_LAG | SILC_CF_REG, 3),
-  SILC_CLIENT_CMD(quit, QUIT, "QUIT", SILC_CF_LAG | SILC_CF_REG, 1),
+  SILC_CLIENT_CMD(quit, QUIT, "QUIT", SILC_CF_LAG | SILC_CF_REG, 2),
   SILC_CLIENT_CMD(kill, KILL, "KILL", 
                  SILC_CF_LAG | SILC_CF_REG | SILC_CF_OPER, 2),
   SILC_CLIENT_CMD(info, INFO, "INFO", SILC_CF_LAG | SILC_CF_REG, 2),
   SILC_CLIENT_CMD(connect, CONNECT, "CONNECT",
-                 SILC_CF_LAG | SILC_CF_REG | SILC_CF_OPER, 2),
+                 SILC_CF_LAG | SILC_CF_REG | SILC_CF_OPER, 3),
   SILC_CLIENT_CMD(ping, PING, "PING", SILC_CF_LAG | SILC_CF_REG, 2),
   SILC_CLIENT_CMD(oper, OPER, "OPER",
                  SILC_CF_LAG | SILC_CF_REG | SILC_CF_OPER, 2),
@@ -46,17 +46,17 @@ SilcClientCommand silc_command_list[] =
   SILC_CLIENT_CMD(umode, UMODE, "UMODE", SILC_CF_LAG | SILC_CF_REG, 2),
   SILC_CLIENT_CMD(cmode, CMODE, "CMODE", SILC_CF_LAG | SILC_CF_REG, 4),
   SILC_CLIENT_CMD(cumode, CUMODE, "CUMODE", SILC_CF_LAG | SILC_CF_REG, 5),
-  SILC_CLIENT_CMD(kick, KICK, "KICK", SILC_CF_LAG | SILC_CF_REG, 2),
+  SILC_CLIENT_CMD(kick, KICK, "KICK", SILC_CF_LAG | SILC_CF_REG, 4),
   SILC_CLIENT_CMD(restart, RESTART, "RESTART",
                  SILC_CF_LAG | SILC_CF_REG | SILC_CF_OPER, 2),
   SILC_CLIENT_CMD(close, CLOSE, "CLOSE",
                  SILC_CF_LAG | SILC_CF_REG | SILC_CF_OPER, 2),
-  SILC_CLIENT_CMD(die, DIE, "DIE",
-                 SILC_CF_LAG | SILC_CF_REG | SILC_CF_OPER, 2),
+  SILC_CLIENT_CMD(shutdown, SHUTDOWN, "SHUTDOWN",
+                 SILC_CF_LAG | SILC_CF_REG | SILC_CF_OPER, 1),
   SILC_CLIENT_CMD(silcoper, SILCOPER, "SILOPER",
                  SILC_CF_LAG | SILC_CF_REG | SILC_CF_SILC_OPER, 2),
   SILC_CLIENT_CMD(leave, LEAVE, "LEAVE", SILC_CF_LAG | SILC_CF_REG, 2),
-  SILC_CLIENT_CMD(names, NAMES, "NAMES", SILC_CF_LAG | SILC_CF_REG, 2),
+  SILC_CLIENT_CMD(users, USERS, "USERS", SILC_CF_LAG | SILC_CF_REG, 2),
 
   { NULL, 0, NULL, 0, 0 },
 };
@@ -74,21 +74,19 @@ SilcClientCommand silc_command_list[] =
 #define COMMAND_ERROR cmd->client->ops->command(cmd->client, cmd->conn, \
   cmd, FALSE, cmd->command->cmd)
 
-/* List of pending commands. */
-SilcClientCommandPending *silc_command_pending = NULL;
-
 /* Generic function to send any command. The arguments must be sent already
    encoded into correct form in correct order. */
 
 void silc_client_send_command(SilcClient client, SilcClientConnection conn,
-                             SilcCommand command, unsigned int argc, ...)
+                             SilcCommand command, unsigned short ident,
+                             unsigned int argc, ...)
 {
   SilcBuffer packet;
   va_list ap;
 
   va_start(ap, argc);
 
-  packet = silc_command_payload_encode_vap(command, 0, argc, ap);
+  packet = silc_command_payload_encode_vap(command, ident, argc, ap);
   silc_client_packet_send(client, conn->sock, SILC_PACKET_COMMAND, 
                          NULL, 0, NULL, NULL, packet->data, 
                          packet->len, TRUE);
@@ -110,78 +108,115 @@ SilcClientCommand *silc_client_command_find(const char *name)
   return NULL;
 }
 
-/* Add new pending command to the list of pending commands. Currently
-   pending commands are executed from command replies, thus we can
-   execute any command after receiving some specific command reply.
-
-   The argument `reply_cmd' is the command reply from where the callback
-   function is to be called, thus, it IS NOT the command to be executed.
-
-   XXX: If needed in the future this support may be extended for
-   commands as well, when any command could be executed after executing
-   some specific command. */
-
-void silc_client_command_pending(SilcCommand reply_cmd,
-                                SilcClientCommandCallback callback,
+/* Add new pending command to be executed when reply to a command has been
+   received.  The `reply_cmd' is the command that will call the `callback'
+   with `context' when reply has been received.  If `ident is non-zero
+   the `callback' will be executed when received reply with command 
+   identifier `ident'. */
+
+void silc_client_command_pending(SilcClientConnection conn,
+                                SilcCommand reply_cmd,
+                                unsigned short ident,
+                                SilcClientPendingDestructor destructor,
+                                SilcCommandCb callback,
                                 void *context)
 {
-  SilcClientCommandPending *reply, *r;
+  SilcClientCommandPending *reply;
 
   reply = silc_calloc(1, sizeof(*reply));
   reply->reply_cmd = reply_cmd;
+  reply->ident = ident;
   reply->context = context;
   reply->callback = callback;
+  reply->destructor = destructor;
+  silc_dlist_add(conn->pending_commands, reply);
+}
 
-  if (silc_command_pending == NULL) {
-    silc_command_pending = reply;
-    return;
-  }
+/* Deletes pending command by reply command type. */
+
+void silc_client_command_pending_del(SilcClientConnection conn,
+                                    SilcCommand reply_cmd,
+                                    unsigned short ident)
+{
+  SilcClientCommandPending *r;
 
-  for (r = silc_command_pending; r; r = r->next) {
-    if (r->next == NULL) {
-      r->next = reply;
+  silc_dlist_start(conn->pending_commands);
+  while ((r = silc_dlist_get(conn->pending_commands)) != SILC_LIST_END) {
+    if (r->reply_cmd == reply_cmd && r->ident == ident) {
+      silc_dlist_del(conn->pending_commands, r);
       break;
     }
   }
 }
 
-/* Deletes pending command by reply command type. */
+/* Checks for pending commands and marks callbacks to be called from
+   the command reply function. Returns TRUE if there were pending command. */
 
-void silc_client_command_pending_del(SilcCommand reply_cmd)
+int silc_client_command_pending_check(SilcClientConnection conn,
+                                     SilcClientCommandReplyContext ctx,
+                                     SilcCommand command, 
+                                     unsigned short ident)
 {
-  SilcClientCommandPending *r, *tmp;
-  
-  if (silc_command_pending) {
-    if (silc_command_pending->reply_cmd == reply_cmd) {
-      silc_free(silc_command_pending);
-      silc_command_pending = NULL;
-      return;
-    }
-
-    for (r = silc_command_pending; r; r = r->next) {
-      if (r->next && r->next->reply_cmd == reply_cmd) {
-       tmp = r->next;
-       r->next = r->next->next;
-       silc_free(tmp);
-       break;
-      }
+  SilcClientCommandPending *r;
+
+  silc_dlist_start(conn->pending_commands);
+  while ((r = silc_dlist_get(conn->pending_commands)) != SILC_LIST_END) {
+    if (r->reply_cmd == command && r->ident == ident) {
+      ctx->context = r->context;
+      ctx->callback = r->callback;
+      ctx->destructor = r->destructor;
+      ctx->ident = ident;
+      return TRUE;
     }
   }
+
+  return FALSE;
 }
 
-/* Free command context and its internals */
+/* Allocate Command Context */
 
-void silc_client_command_free(SilcClientCommandContext cmd)
+SilcClientCommandContext silc_client_command_alloc()
 {
-  int i;
+  SilcClientCommandContext ctx = silc_calloc(1, sizeof(*ctx));
+  ctx->users++;
+  return ctx;
+}
+
+/* Free command context and its internals */
 
-  if (cmd) {
-    for (i = 0; i < cmd->argc; i++)
-      silc_free(cmd->argv[i]);
-    silc_free(cmd);
+void silc_client_command_free(SilcClientCommandContext ctx)
+{
+  ctx->users--;
+  SILC_LOG_DEBUG(("Command context %p refcnt %d->%d", ctx, ctx->users + 1,
+                 ctx->users));
+  if (ctx->users < 1) {
+    int i;
+
+    for (i = 0; i < ctx->argc; i++)
+      silc_free(ctx->argv[i]);
+    silc_free(ctx);
   }
 }
 
+/* Duplicate Command Context by adding reference counter. The context won't
+   be free'd untill it hits zero. */
+
+SilcClientCommandContext 
+silc_client_command_dup(SilcClientCommandContext ctx)
+{
+  ctx->users++;
+  SILC_LOG_DEBUG(("Command context %p refcnt %d->%d", ctx, ctx->users - 1,
+                 ctx->users));
+  return ctx;
+}
+
+/* Pending command destructor. */
+
+static void silc_client_command_destructor(void *context)
+{
+  silc_client_command_free((SilcClientCommandContext)context);
+}
+
 /* Command WHOIS. This command is used to query information about 
    specific user. */
 
@@ -436,7 +471,8 @@ SILC_CLIENT_CMD_FUNC(invite)
   }
 
   /* Find client entry */
-  client_entry = silc_idlist_get_client(client, conn, nickname, server, num);
+  client_entry = silc_idlist_get_client(client, conn, nickname, server, num,
+                                       TRUE);
   if (!client_entry) {
     if (nickname)
       silc_free(nickname);
@@ -445,8 +481,11 @@ SILC_CLIENT_CMD_FUNC(invite)
 
     /* Client entry not found, it was requested thus mark this to be
        pending command. */
-    silc_client_command_pending(SILC_COMMAND_IDENTIFY, 
-                               silc_client_command_invite, context);
+    silc_client_command_pending(conn, SILC_COMMAND_IDENTIFY, 0,
+                               silc_client_command_destructor,
+                               silc_client_command_invite, 
+                               silc_client_command_dup(cmd));
+    cmd->pending = 1;
     return;
   }
 
@@ -481,12 +520,29 @@ SILC_CLIENT_CMD_FUNC(invite)
   silc_client_command_free(cmd);
 }
 
+typedef struct {
+  SilcClient client;
+  SilcClientConnection conn;
+} *QuitInternal;
+
+SILC_TASK_CALLBACK(silc_client_command_quit_cb)
+{
+  QuitInternal q = (QuitInternal)context;
+
+  /* Close connection */
+  q->client->ops->disconnect(q->client, q->conn);
+  silc_client_close_connection(q->client, q->conn->sock);
+
+  silc_free(q);
+}
+
 /* Command QUIT. Closes connection with current server. */
  
 SILC_CLIENT_CMD_FUNC(quit)
 {
   SilcClientCommandContext cmd = (SilcClientCommandContext)context;
   SilcBuffer buffer;
+  QuitInternal q;
 
   if (!cmd->conn) {
     SILC_NOT_CONNECTED(cmd->client, cmd->conn);
@@ -494,20 +550,26 @@ SILC_CLIENT_CMD_FUNC(quit)
     goto out;
   }
 
-  buffer = silc_command_payload_encode(SILC_COMMAND_QUIT, cmd->argc - 1, 
-                                      ++cmd->argv, ++cmd->argv_lens,
-                                      ++cmd->argv_types, 0);
+  if (cmd->argc > 1)
+    buffer = silc_command_payload_encode(SILC_COMMAND_QUIT, cmd->argc - 1, 
+                                        &cmd->argv[1], &cmd->argv_lens[1],
+                                        &cmd->argv_types[1], 0);
+  else
+    buffer = silc_command_payload_encode(SILC_COMMAND_QUIT, 0,
+                                        NULL, NULL, NULL, 0);
   silc_client_packet_send(cmd->client, cmd->conn->sock, SILC_PACKET_COMMAND, 
                          NULL, 0, NULL, NULL, 
                          buffer->data, buffer->len, TRUE);
   silc_buffer_free(buffer);
-  cmd->argv--;
-  cmd->argv_lens--;
-  cmd->argv_types--;
 
-  /* Close connection */
-  silc_client_close_connection(cmd->client, cmd->conn->sock);
-  cmd->client->ops->disconnect(cmd->client, cmd->conn);
+  q = silc_calloc(1, sizeof(*q));
+  q->client = cmd->client;
+  q->conn = cmd->conn;
+
+  /* We quit the connection with little timeout */
+  silc_task_register(cmd->client->timeout_queue, cmd->conn->sock->sock,
+                    silc_client_command_quit_cb, (void *)q,
+                    1, 0, SILC_TASK_TIMEOUT, SILC_TASK_PRI_NORMAL);
 
   /* Notify application */
   COMMAND;
@@ -555,10 +617,6 @@ SILC_CLIENT_CMD_FUNC(info)
   silc_client_command_free(cmd);
 }
 
-SILC_CLIENT_CMD_FUNC(connect)
-{
-}
-
 /* Command PING. Sends ping to server. This is used to test the 
    communication channel. */
 
@@ -588,7 +646,13 @@ SILC_CLIENT_CMD_FUNC(ping)
                          0, NULL, NULL, buffer->data, buffer->len, TRUE);
   silc_buffer_free(buffer);
 
-  id = silc_id_str2id(conn->remote_id_data, SILC_ID_SERVER);
+  id = silc_id_str2id(conn->remote_id_data, conn->remote_id_data_len,
+                     SILC_ID_SERVER);
+  if (!id) {
+    SILC_NOT_CONNECTED(cmd->client, cmd->conn);
+    COMMAND_ERROR;
+    goto out;
+  }
 
   /* Start counting time */
   for (i = 0; i < conn->ping_count; i++) {
@@ -616,14 +680,6 @@ SILC_CLIENT_CMD_FUNC(ping)
   silc_client_command_free(cmd);
 }
 
-SILC_CLIENT_CMD_FUNC(oper)
-{
-}
-
-SILC_CLIENT_CMD_FUNC(trace)
-{
-}
-
 SILC_CLIENT_CMD_FUNC(notice)
 {
 }
@@ -665,7 +721,7 @@ SILC_CLIENT_CMD_FUNC(join)
   idp = silc_id_payload_encode(conn->local_id, SILC_ID_CLIENT);
 
   /* Send JOIN command to the server */
-  if (cmd->argc == 3)
+  if (cmd->argc == 2)
     buffer = 
       silc_command_payload_encode_va(SILC_COMMAND_JOIN, 0, 2,
                                     1, cmd->argv[1], cmd->argv_lens[1],
@@ -984,12 +1040,15 @@ SILC_CLIENT_CMD_FUNC(cumode)
 
   /* Find client entry */
   client_entry = silc_idlist_get_client(cmd->client, conn, 
-                                       nickname, server, num);
+                                       nickname, server, num, TRUE);
   if (!client_entry) {
     /* Client entry not found, it was requested thus mark this to be
        pending command. */
-    silc_client_command_pending(SILC_COMMAND_CUMODE, 
-                               silc_client_command_cumode, context);
+    silc_client_command_pending(conn, SILC_COMMAND_CUMODE, 0,  
+                               silc_client_command_destructor,
+                               silc_client_command_cumode, 
+                               silc_client_command_dup(cmd));
+    cmd->pending = 1;
     return;
   }
   
@@ -1068,25 +1127,227 @@ SILC_CLIENT_CMD_FUNC(kick)
 {
   SilcClientCommandContext cmd = (SilcClientCommandContext)context;
   SilcClientConnection conn = cmd->conn;
+  SilcIDCacheEntry id_cache = NULL;
+  SilcChannelEntry channel;
+  SilcBuffer buffer, idp, idp2;
+  SilcClientEntry target;
+  char *name;
+  unsigned int num = 0;
+  char *nickname = NULL, *server = NULL;
+
+  if (!cmd->conn) {
+    SILC_NOT_CONNECTED(cmd->client, cmd->conn);
+    COMMAND_ERROR;
+    goto out;
+  }
+
+  if (cmd->argc < 3) {
+    cmd->client->ops->say(cmd->client, conn, 
+                         "Usage: /KICK <channel> <client> [<comment>]");
+    COMMAND_ERROR;
+    goto out;
+  }
+
+  if (cmd->argv[1][0] == '*') {
+    if (!conn->current_channel) {
+      cmd->client->ops->say(cmd->client, conn, "You are not on any channel");
+      COMMAND_ERROR;
+      goto out;
+    }
+    name = conn->current_channel->channel_name;
+  } else {
+    name = cmd->argv[1];
+  }
+
+  if (!conn->current_channel) {
+    cmd->client->ops->say(cmd->client, conn, "You are not on that channel");
+    COMMAND_ERROR;
+    goto out;
+  }
+
+  /* Get the Channel ID of the channel */
+  if (!silc_idcache_find_by_data_one(conn->channel_cache, name, &id_cache)) {
+    cmd->client->ops->say(cmd->client, conn, "You are not on that channel");
+    COMMAND_ERROR;
+    goto out;
+  }
+
+  channel = (SilcChannelEntry)id_cache->context;
+
+  /* Parse the typed nickname. */
+  if (!silc_parse_nickname(cmd->argv[2], &nickname, &server, &num)) {
+    cmd->client->ops->say(cmd->client, conn, "Bad nickname");
+    COMMAND_ERROR;
+    goto out;
+  }
 
+  /* Get the target client */
+  target = silc_idlist_get_client(cmd->client, conn, nickname, 
+                                 server, num, FALSE);
+  if (!target) {
+    cmd->client->ops->say(cmd->client, conn, "No such client: %s",
+                         cmd->argv[2]);
+    COMMAND_ERROR;
+    goto out;
+  }
+
+  /* Send KICK command to the server */
+  idp = silc_id_payload_encode(id_cache->id, SILC_ID_CHANNEL);
+  idp2 = silc_id_payload_encode(target->id, SILC_ID_CLIENT);
+  if (cmd->argc == 3)
+    buffer = silc_command_payload_encode_va(SILC_COMMAND_KICK, 0, 2, 
+                                           1, idp->data, idp->len,
+                                           2, idp2->data, idp2->len);
+  else
+    buffer = silc_command_payload_encode_va(SILC_COMMAND_KICK, 0, 3, 
+                                           1, idp->data, idp->len,
+                                           2, idp2->data, idp2->len,
+                                           3, cmd->argv[3], 
+                                           strlen(cmd->argv[3]));
+  silc_client_packet_send(cmd->client, conn->sock, SILC_PACKET_COMMAND, NULL,
+                         0, NULL, NULL, buffer->data, buffer->len, TRUE);
+  silc_buffer_free(buffer);
+  silc_buffer_free(idp);
+  silc_buffer_free(idp2);
+
+  /* Notify application */
+  COMMAND;
+
+ out:
+  silc_client_command_free(cmd);
+}
+
+SILC_CLIENT_CMD_FUNC(silcoper)
+{
+}
+
+SILC_CLIENT_CMD_FUNC(oper)
+{
+}
+
+/* CONNECT command. Connects the server to another server. */
+
+SILC_CLIENT_CMD_FUNC(connect)
+{
+  SilcClientCommandContext cmd = (SilcClientCommandContext)context;
+  SilcClientConnection conn = cmd->conn;
+  SilcBuffer buffer;
+  unsigned char port[4];
+  unsigned int tmp;
+
+  if (!cmd->conn) {
+    SILC_NOT_CONNECTED(cmd->client, cmd->conn);
+    COMMAND_ERROR;
+    goto out;
+  }
+
+  if (cmd->argc < 2) {
+    cmd->client->ops->say(cmd->client, conn, 
+                         "Usage: /CONNECT <server> [<port>]");
+    COMMAND_ERROR;
+    goto out;
+  }
+
+  if (cmd->argc == 3) {
+    tmp = atoi(cmd->argv[2]);
+    SILC_PUT32_MSB(tmp, port);
+  }
+
+  if (cmd->argc == 3)
+    buffer = silc_command_payload_encode_va(SILC_COMMAND_CONNECT, 0, 2, 
+                                           1, cmd->argv[1], 
+                                           strlen(cmd->argv[1]),
+                                           2, port, 4);
+  else
+    buffer = silc_command_payload_encode_va(SILC_COMMAND_CONNECT, 0, 1,
+                                           1, cmd->argv[1], 
+                                           strlen(cmd->argv[1]));
+  silc_client_packet_send(cmd->client, conn->sock, SILC_PACKET_COMMAND, NULL,
+                         0, NULL, NULL, buffer->data, buffer->len, TRUE);
+  silc_buffer_free(buffer);
+
+  /* Notify application */
+  COMMAND;
+
+ out:
+  silc_client_command_free(cmd);
 }
 
 SILC_CLIENT_CMD_FUNC(restart)
 {
 }
+
+/* CLOSE command. Close server connection to the remote server */
  
 SILC_CLIENT_CMD_FUNC(close)
 {
+  SilcClientCommandContext cmd = (SilcClientCommandContext)context;
+  SilcClientConnection conn = cmd->conn;
+  SilcBuffer buffer;
+  unsigned char port[4];
+  unsigned int tmp;
+
+  if (!cmd->conn) {
+    SILC_NOT_CONNECTED(cmd->client, cmd->conn);
+    COMMAND_ERROR;
+    goto out;
+  }
+
+  if (cmd->argc < 2) {
+    cmd->client->ops->say(cmd->client, conn, 
+                         "Usage: /CLOSE <server> [<port>]");
+    COMMAND_ERROR;
+    goto out;
+  }
+
+  if (cmd->argc == 3) {
+    tmp = atoi(cmd->argv[2]);
+    SILC_PUT32_MSB(tmp, port);
+  }
+
+  if (cmd->argc == 3)
+    buffer = silc_command_payload_encode_va(SILC_COMMAND_CLOSE, 0, 2, 
+                                           1, cmd->argv[1], 
+                                           strlen(cmd->argv[1]),
+                                           2, port, 4);
+  else
+    buffer = silc_command_payload_encode_va(SILC_COMMAND_CLOSE, 0, 1,
+                                           1, cmd->argv[1], 
+                                           strlen(cmd->argv[1]));
+  silc_client_packet_send(cmd->client, conn->sock, SILC_PACKET_COMMAND, NULL,
+                         0, NULL, NULL, buffer->data, buffer->len, TRUE);
+  silc_buffer_free(buffer);
+
+  /* Notify application */
+  COMMAND;
+
+ out:
+  silc_client_command_free(cmd);
 }
  
-SILC_CLIENT_CMD_FUNC(die)
+/* SHUTDOWN command. Shutdowns the server. */
+
+SILC_CLIENT_CMD_FUNC(shutdown)
 {
+  SilcClientCommandContext cmd = (SilcClientCommandContext)context;
+
+  if (!cmd->conn) {
+    SILC_NOT_CONNECTED(cmd->client, cmd->conn);
+    COMMAND_ERROR;
+    goto out;
+  }
+
+  /* Send the command */
+  silc_client_send_command(cmd->client, cmd->conn, 
+                          SILC_COMMAND_SHUTDOWN, 0, 0);
+
+  /* Notify application */
+  COMMAND;
+
+ out:
+  silc_client_command_free(cmd);
 }
  
-SILC_CLIENT_CMD_FUNC(silcoper)
-{
-}
-
 /* LEAVE command. Leaves a channel. Client removes itself from a channel. */
 
 SILC_CLIENT_CMD_FUNC(leave)
@@ -1164,16 +1425,18 @@ SILC_CLIENT_CMD_FUNC(leave)
   silc_client_command_free(cmd);
 }
 
-/* Command NAMES. Requests the names of the clients joined on requested
+/* Command USERS. Requests the USERS of the clients joined on requested
    channel. */
 
-SILC_CLIENT_CMD_FUNC(names)
+SILC_CLIENT_CMD_FUNC(users)
 {
   SilcClientCommandContext cmd = (SilcClientCommandContext)context;
   SilcClientConnection conn = cmd->conn;
   SilcIDCacheEntry id_cache = NULL;
+  SilcChannelEntry channel;
   SilcBuffer buffer, idp;
-  char *name;
+  char *name, *line = NULL;
+  unsigned int line_len = 0;
 
   if (!cmd->conn) {
     SILC_NOT_CONNECTED(cmd->client, cmd->conn);
@@ -1182,7 +1445,7 @@ SILC_CLIENT_CMD_FUNC(names)
   }
 
   if (cmd->argc != 2) {
-    cmd->client->ops->say(cmd->client, conn, "Usage: /NAMES <channel>");
+    cmd->client->ops->say(cmd->client, conn, "Usage: /USERS <channel>");
     COMMAND_ERROR;
     goto out;
   }
@@ -1213,25 +1476,93 @@ SILC_CLIENT_CMD_FUNC(names)
     goto out;
   }
 
-  /* Send NAMES command to the server */
-  idp = silc_id_payload_encode(id_cache->id, SILC_ID_CHANNEL);
-  buffer = silc_command_payload_encode_va(SILC_COMMAND_NAMES, 0, 1, 
-                                         1, idp->data, idp->len);
-  silc_client_packet_send(cmd->client, conn->sock, SILC_PACKET_COMMAND, NULL, 
-                         0, NULL, NULL, buffer->data, buffer->len, TRUE);
-  silc_buffer_free(buffer);
-  silc_buffer_free(idp);
+  channel = (SilcChannelEntry)id_cache->context;
+
+  if (!cmd->pending) {
+    /* Send USERS command to the server */
+    idp = silc_id_payload_encode(id_cache->id, SILC_ID_CHANNEL);
+    buffer = silc_command_payload_encode_va(SILC_COMMAND_USERS, 0, 1, 
+                                           1, idp->data, idp->len);
+    silc_client_packet_send(cmd->client, conn->sock, SILC_PACKET_COMMAND, 
+                           NULL, 0, NULL, NULL, buffer->data, 
+                           buffer->len, TRUE);
+    silc_buffer_free(buffer);
+    silc_buffer_free(idp);
+
+    /* Register pending callback which will recall this command callback with
+       same context and reprocesses the command. When reprocessing we actually
+       display the information on the screen. */
+    silc_client_command_pending(conn, SILC_COMMAND_USERS, 0, 
+                               silc_client_command_destructor,
+                               silc_client_command_users, 
+                               silc_client_command_dup(cmd));
+    cmd->pending = TRUE;
+    return;
+  }
+
+  if (cmd->pending) {
+    /* Pending command. Now we've resolved the information from server and
+       we are ready to display the information on screen. */
+    int i;
+    SilcChannelUser chu;
+
+    cmd->client->ops->say(cmd->client, conn, "Users on %s", 
+                         channel->channel_name);
+
+    line = silc_calloc(4096, sizeof(*line));
+    line_len = 4096;
+    silc_list_start(channel->clients);
+    while ((chu = silc_list_get(channel->clients)) != SILC_LIST_END) {
+      SilcClientEntry e = chu->client;
+      char *m, tmp[80], len1;
+
+      memset(line, 0, sizeof(line_len));
+
+      if (strlen(e->nickname) + strlen(e->server) + 100 > line_len) {
+       silc_free(line);
+       line_len += strlen(e->nickname) + strlen(e->server) + 100;
+       line = silc_calloc(line_len, sizeof(*line));
+      }
+
+      memset(tmp, 0, sizeof(tmp));
+      m = silc_client_chumode_char(chu->mode);
+
+      strncat(line, " ", 1);
+      strncat(line, e->nickname, strlen(e->nickname));
+      strncat(line, e->server ? "@" : "", 1);
+
+      len1 = 0;
+      if (e->server)
+       len1 = strlen(e->server);
+      strncat(line, e->server ? e->server : "", len1 > 30 ? 30 : len1);
+
+      len1 = strlen(line);
+      if (len1 >= 30) {
+       memset(&line[29], 0, len1 - 29);
+      } else {
+       for (i = 0; i < 30 - len1 - 1; i++)
+         strcat(line, " ");
+      }
+
+      strncat(line, "  H", 3);
+      strcat(tmp, m ? m : "");
+      strncat(line, tmp, strlen(tmp));
+
+      if (strlen(tmp) < 5)
+       for (i = 0; i < 5 - strlen(tmp); i++)
+         strcat(line, " ");
+
+      strcat(line, e->username ? e->username : "");
+
+      cmd->client->ops->say(cmd->client, conn, "%s", line);
+
+      if (m)
+       silc_free(m);
+    }
+  }
 
-  /* Register dummy pending command that will tell the reply command
-     that user called this command. Server may send reply to this command
-     even if user did not send this command thus we want to handle things
-     differently when user sent the command. This is dummy and won't be
-     executed. */
-  /* XXX this is kludge and should be removed after pending command reply 
-     support is added. Currently only commands may be pending not command
-     replies. */
-  silc_client_command_pending(SILC_COMMAND_NAMES, 
-                             silc_client_command_names, NULL);
+  if (line)
+    silc_free(line);
 
   /* Notify application */
   COMMAND;