updates.
[silc.git] / lib / silcclient / client.c
index ae7f31566bcdf0e54fe843a7f678fdd0bb8b6949..0d0aeec257e8f5a352f093f45fc837053e38df91 100644 (file)
@@ -18,7 +18,8 @@
 */
 /* $Id$ */
 
-#include "clientlibincludes.h"
+#include "silcincludes.h"
+#include "silcclient.h"
 #include "client_internal.h"
 
 /* Static task callback prototypes */
@@ -36,7 +37,7 @@ static void silc_client_packet_parse_type(SilcClient client,
 void silc_client_resolve_auth_method(bool success,
                                     SilcProtocolAuthMeth auth_meth,
                                     const unsigned char *auth_data,
-                                    uint32 auth_data_len, void *context);
+                                    SilcUInt32 auth_data_len, void *context);
 
 /* Allocates new client object. This has to be done before client may
    work. After calling this one must call silc_client_init to initialize
@@ -185,10 +186,10 @@ static void silc_client_entry_destructor(SilcIDCache cache,
    application performed the connecting outside the library. The library
    however may use this internally. */
 
-SilcClientConnection silc_client_add_connection(SilcClient client,
-                                               char *hostname,
-                                               int port,
-                                               void *context)
+SilcClientConnection
+silc_client_add_connection(SilcClient client,
+                           SilcClientConnectionParams *params,
+                           char *hostname, int port, void *context)
 {
   SilcClientConnection conn;
   int i;
@@ -207,6 +208,13 @@ SilcClientConnection silc_client_add_connection(SilcClient client,
   conn->pending_commands = silc_dlist_init();
   conn->ftp_sessions = silc_dlist_init();
 
+  if (params) {
+    if (params->detach_data)
+      conn->params.detach_data = silc_memdup(params->detach_data,
+                                            params->detach_data_len);
+    conn->params.detach_data_len = params->detach_data_len;
+  }
+
   /* Add the connection to connections table */
   for (i = 0; i < client->internal->conns_count; i++)
     if (client->internal->conns && !client->internal->conns[i]) {
@@ -329,8 +337,9 @@ silc_client_connect_to_server_internal(SilcClientInternalConnectContext *ctx)
    case then this function is not used at all. When the connecting is
    done the `connect' client operation is called. */
 
-int silc_client_connect_to_server(SilcClient client, int port,
-                                 char *host, void *context)
+int silc_client_connect_to_server(SilcClient client,
+                                  SilcClientConnectionParams *params,
+                                  int port, char *host, void *context)
 {
   SilcClientInternalConnectContext *ctx;
   SilcClientConnection conn;
@@ -339,7 +348,7 @@ int silc_client_connect_to_server(SilcClient client, int port,
   SILC_LOG_DEBUG(("Connecting to port %d of server %s",
                  port, host));
 
-  conn = silc_client_add_connection(client, host, port, context);
+  conn = silc_client_add_connection(client, params, host, port, context);
 
   client->internal->ops->say(client, conn, SILC_CLIENT_MESSAGE_AUDIT, 
                             "Connecting to port %d of server %s", port, host);
@@ -372,8 +381,12 @@ static void silc_client_start_key_exchange_cb(SilcSocketConnection sock,
   SilcProtocol protocol;
   SilcClientKEInternalContext *proto_ctx;
 
-  if (!conn->sock->hostname)
-    conn->sock->hostname = strdup(conn->remote_host);
+  SILC_LOG_DEBUG(("Start"));
+
+  /* XXX We should most likely use the resolved host name instead of the
+     one user provided for us. */
+  silc_free(conn->sock->hostname);
+  conn->sock->hostname = strdup(conn->remote_host);
   if (!conn->sock->ip)
     conn->sock->ip = strdup(conn->remote_host);
   conn->sock->port = conn->remote_port;
@@ -397,7 +410,7 @@ static void silc_client_start_key_exchange_cb(SilcSocketConnection sock,
     client->internal->ops->say(client, conn, SILC_CLIENT_MESSAGE_ERROR,
                               "Error: Could not start key exchange protocol");
     silc_net_close_connection(conn->sock->sock);
-    client->internal->ops->connect(client, conn, FALSE);
+    client->internal->ops->connect(client, conn, SILC_CLIENT_CONN_ERROR);
     return;
   }
   conn->sock->protocol = protocol;
@@ -452,7 +465,10 @@ SILC_TASK_CALLBACK(silc_client_connect_failure)
     (SilcClientKEInternalContext *)context;
   SilcClient client = (SilcClient)ctx->client;
 
-  client->internal->ops->connect(client, ctx->sock->user_data, FALSE);
+  client->internal->ops->connect(client, ctx->sock->user_data, 
+                                SILC_CLIENT_CONN_ERROR);
+  if (ctx->packet)
+    silc_packet_context_free(ctx->packet);
   silc_free(ctx);
 }
 
@@ -500,7 +516,7 @@ SILC_TASK_CALLBACK(silc_client_connect_to_server_start)
       silc_free(ctx);
 
       /* Notify application of failure */
-      client->internal->ops->connect(client, conn, FALSE);
+      client->internal->ops->connect(client, conn, SILC_CLIENT_CONN_ERROR);
       silc_client_del_connection(client, conn);
     }
     return;
@@ -593,7 +609,7 @@ SILC_TASK_CALLBACK(silc_client_connect_to_server_second)
 void silc_client_resolve_auth_method(bool success,
                                     SilcProtocolAuthMeth auth_meth,
                                     const unsigned char *auth_data,
-                                    uint32 auth_data_len, void *context)
+                                    SilcUInt32 auth_data_len, void *context)
 {
   SilcClientConnAuthInternalContext *proto_ctx =
     (SilcClientConnAuthInternalContext *)context;
@@ -605,8 +621,7 @@ void silc_client_resolve_auth_method(bool success,
   proto_ctx->auth_meth = auth_meth;
 
   if (auth_data && auth_data_len) {
-    proto_ctx->auth_data = silc_calloc(auth_data_len, sizeof(*auth_data));
-    memcpy(proto_ctx->auth_data, auth_data, auth_data_len);
+    proto_ctx->auth_data = silc_memdup(auth_data, auth_data_len);
     proto_ctx->auth_data_len = auth_data_len;
   }
 
@@ -656,26 +671,71 @@ SILC_TASK_CALLBACK(silc_client_connect_to_server_final)
     return;
   }
 
-  /* Send NEW_CLIENT packet to the server. We will become registered
-     to the SILC network after sending this packet and we will receive
-     client ID from the server. */
-  packet = silc_buffer_alloc(2 + 2 + strlen(client->username) + 
-                            strlen(client->realname));
-  silc_buffer_pull_tail(packet, SILC_BUFFER_END(packet));
-  silc_buffer_format(packet,
-                    SILC_STR_UI_SHORT(strlen(client->username)),
-                    SILC_STR_UI_XNSTRING(client->username,
-                                         strlen(client->username)),
-                    SILC_STR_UI_SHORT(strlen(client->realname)),
-                    SILC_STR_UI_XNSTRING(client->realname,
-                                         strlen(client->realname)),
-                    SILC_STR_END);
+  if (conn->params.detach_data) {
+    /* Send RESUME_CLIENT packet to the server, which is used to resume
+       old detached session back. */
+    SilcBuffer auth;
+    SilcClientID *old_client_id;
+    unsigned char *old_id;
+    SilcUInt16 old_id_len;
 
-  /* Send the packet */
-  silc_client_packet_send(client, ctx->sock, SILC_PACKET_NEW_CLIENT,
-                         NULL, 0, NULL, NULL, 
-                         packet->data, packet->len, TRUE);
-  silc_buffer_free(packet);
+    if (!silc_client_process_detach_data(client, conn, &old_id, &old_id_len))
+      return;
+
+    old_client_id = silc_id_str2id(old_id, old_id_len, SILC_ID_CLIENT);
+    if (!old_client_id) {
+      silc_free(old_id);
+      return;
+    }
+
+    /* Generate authentication data that server will verify */
+    auth = silc_auth_public_key_auth_generate(client->public_key,
+                                             client->private_key,
+                                             client->rng, conn->hash,
+                                             old_client_id, SILC_ID_CLIENT);
+    if (!auth) {
+      silc_free(old_client_id);
+      silc_free(old_id);
+      return;
+    }
+
+    packet = silc_buffer_alloc_size(2 + old_id_len + auth->len);
+    silc_buffer_format(packet,
+                      SILC_STR_UI_SHORT(old_id_len),
+                      SILC_STR_UI_XNSTRING(old_id, old_id_len),
+                      SILC_STR_UI_XNSTRING(auth->data, auth->len),
+                      SILC_STR_END);
+
+    /* Send the packet */
+    silc_client_packet_send(client, ctx->sock, SILC_PACKET_RESUME_CLIENT,
+                           NULL, 0, NULL, NULL, 
+                           packet->data, packet->len, TRUE);
+    silc_buffer_free(packet);
+    silc_buffer_free(auth);
+    silc_free(old_client_id);
+    silc_free(old_id);
+  } else {
+    /* Send NEW_CLIENT packet to the server. We will become registered
+       to the SILC network after sending this packet and we will receive
+       client ID from the server. */
+    packet = silc_buffer_alloc(2 + 2 + strlen(client->username) + 
+                              strlen(client->realname));
+    silc_buffer_pull_tail(packet, SILC_BUFFER_END(packet));
+    silc_buffer_format(packet,
+                      SILC_STR_UI_SHORT(strlen(client->username)),
+                      SILC_STR_UI_XNSTRING(client->username,
+                                           strlen(client->username)),
+                      SILC_STR_UI_SHORT(strlen(client->realname)),
+                      SILC_STR_UI_XNSTRING(client->realname,
+                                           strlen(client->realname)),
+                      SILC_STR_END);
+
+    /* Send the packet */
+    silc_client_packet_send(client, ctx->sock, SILC_PACKET_NEW_CLIENT,
+                           NULL, 0, NULL, NULL, 
+                           packet->data, packet->len, TRUE);
+    silc_buffer_free(packet);
+  }
 
   /* Save remote ID. */
   conn->remote_id = ctx->dest_id;
@@ -762,9 +822,6 @@ SILC_TASK_CALLBACK_GLOBAL(silc_client_packet_process)
     if (SILC_IS_DISCONNECTED(sock))
       return;
 
-    if (sock->outbuf->data - sock->outbuf->head)
-      silc_buffer_push(sock->outbuf, sock->outbuf->data - sock->outbuf->head);
-
     ret = silc_packet_send(sock, TRUE);
 
     /* If returned -2 could not write to connection now, will do
@@ -803,14 +860,14 @@ SILC_TASK_CALLBACK_GLOBAL(silc_client_packet_process)
       if (SILC_IS_DISCONNECTING(sock)) {
        if (sock == conn->sock && sock->type != SILC_SOCKET_TYPE_CLIENT)
          client->internal->ops->disconnect(client, conn);
-       silc_client_close_connection(client, sock, conn);
+       silc_client_close_connection_real(client, sock, conn);
        return;
       }
       
       SILC_LOG_DEBUG(("EOF from connection %d", sock->sock));
       if (sock == conn->sock && sock->type != SILC_SOCKET_TYPE_CLIENT)
        client->internal->ops->disconnect(client, conn);
-      silc_client_close_connection(client, sock, conn);
+      silc_client_close_connection_real(client, sock, conn);
       return;
     }
 
@@ -1054,7 +1111,8 @@ void silc_client_packet_parse_type(SilcClient client,
        
        if (proto_ctx->packet)
          silc_packet_context_free(proto_ctx->packet);
-       
+        if (proto_ctx->dest_id)
+          silc_free(proto_ctx->dest_id);
        proto_ctx->packet = silc_packet_context_dup(packet);
        proto_ctx->dest_id_type = packet->src_id_type;
        proto_ctx->dest_id = silc_id_str2id(packet->src_id, packet->src_id_len,
@@ -1173,12 +1231,13 @@ void silc_client_packet_send(SilcClient client,
                             SilcCipher cipher,
                             SilcHmac hmac,
                             unsigned char *data, 
-                            uint32 data_len, 
+                            SilcUInt32 data_len, 
                             int force_send)
 {
   SilcPacketContext packetdata;
+  const SilcBufferStruct packet;
   int block_len;
-  uint32 sequence = 0;
+  SilcUInt32 sequence = 0;
 
   if (!sock)
     return;
@@ -1227,36 +1286,27 @@ void silc_client_packet_send(SilcClient client,
     packetdata.dst_id_len = 0;
     packetdata.dst_id_type = SILC_ID_NONE;
   }
+  data_len = SILC_PACKET_DATALEN(data_len, (SILC_PACKET_HEADER_LEN +
+                                           packetdata.src_id_len + 
+                                           packetdata.dst_id_len));
   packetdata.truelen = data_len + SILC_PACKET_HEADER_LEN + 
     packetdata.src_id_len + packetdata.dst_id_len;
   packetdata.padlen = SILC_PACKET_PADLEN(packetdata.truelen, block_len);
 
-  /* Prepare outgoing data buffer for packet sending */
-  silc_packet_send_prepare(sock, 
-                          SILC_PACKET_HEADER_LEN +
-                          packetdata.src_id_len + 
-                          packetdata.dst_id_len,
-                          packetdata.padlen,
-                          data_len);
-
-  SILC_LOG_DEBUG(("Putting data to outgoing buffer, len %d", data_len));
-
-  packetdata.buffer = sock->outbuf;
-
-  /* Put the data to the buffer */
-  if (data && data_len)
-    silc_buffer_put(sock->outbuf, data, data_len);
-
   /* Create the outgoing packet */
-  silc_packet_assemble(&packetdata, cipher);
+  if (!silc_packet_assemble(&packetdata, client->rng, cipher, hmac, sock, 
+                            data, data_len, (const SilcBuffer)&packet)) {
+    SILC_LOG_ERROR(("Error assembling packet"));
+    return;
+  }
 
   /* Encrypt the packet */
   if (cipher)
-    silc_packet_encrypt(cipher, hmac, sequence, sock->outbuf
-                       sock->outbuf->len);
+    silc_packet_encrypt(cipher, hmac, sequence, (SilcBuffer)&packet
+                        packet.len);
 
-  SILC_LOG_HEXDUMP(("Packet (%d), len %d", sequence, sock->outbuf->len),
-                  sock->outbuf->data, sock->outbuf->len);
+  SILC_LOG_HEXDUMP(("Packet (%d), len %d", sequence, packet.len),
+                  packet.data, packet.len);
 
   /* Now actually send the packet */
   silc_client_packet_send_real(client, sock, force_send);
@@ -1267,11 +1317,7 @@ void silc_client_packet_queue_purge(SilcClient client,
 {
   if (sock && SILC_IS_OUTBUF_PENDING(sock) && 
       (SILC_IS_DISCONNECTED(sock) == FALSE)) {
-    if (sock->outbuf->data - sock->outbuf->head)
-      silc_buffer_push(sock->outbuf, sock->outbuf->data - sock->outbuf->head);
-
     silc_packet_send(sock, TRUE);
-
     SILC_CLIENT_SET_CONNECTION_FOR_INPUT(client->schedule, sock->sock);
     SILC_UNSET_OUTBUF_PENDING(sock);
     silc_buffer_clear(sock->outbuf);
@@ -1286,9 +1332,9 @@ void silc_client_packet_queue_purge(SilcClient client,
    connection but `conn->sock' might be actually a different connection
    than the `sock'). */
 
-void silc_client_close_connection(SilcClient client,
-                                 SilcSocketConnection sock,
-                                 SilcClientConnection conn)
+void silc_client_close_connection_real(SilcClient client,
+                                      SilcSocketConnection sock,
+                                      SilcClientConnection conn)
 {
   int del = FALSE;
 
@@ -1304,7 +1350,6 @@ void silc_client_close_connection(SilcClient client,
 
   /* Unregister all tasks */
   silc_schedule_task_del_by_fd(client->schedule, sock->sock);
-  silc_schedule_task_del_by_fd(client->schedule, sock->sock);
 
   /* Close the actual connection */
   silc_net_close_connection(sock->sock);
@@ -1332,6 +1377,7 @@ void silc_client_close_connection(SilcClient client,
     /* Free all cache entries */
     SilcIDCacheList list;
     SilcIDCacheEntry entry;
+    SilcClientCommandPending *r;
     bool ret;
 
     if (silc_idcache_get_all(conn->client_cache, &list)) {
@@ -1363,13 +1409,14 @@ void silc_client_close_connection(SilcClient client,
 
     /* Clear ID caches */
     if (conn->client_cache)
-      silc_idcache_del_all(conn->client_cache);
+      silc_idcache_free(conn->client_cache);
     if (conn->channel_cache)
-      silc_idcache_del_all(conn->channel_cache);
+      silc_idcache_free(conn->channel_cache);
     if (conn->server_cache)
-      silc_idcache_del_all(conn->server_cache);
+      silc_idcache_free(conn->server_cache);
 
-    /* Free data (my ID is freed in above silc_client_del_client) */
+    /* Free data (my ID is freed in above silc_client_del_client).
+       conn->nickname is freed when freeing the local_entry->nickname. */
     if (conn->remote_host)
       silc_free(conn->remote_host);
     if (conn->local_id_data)
@@ -1382,8 +1429,6 @@ void silc_client_close_connection(SilcClient client,
       silc_hmac_free(conn->hmac_send);
     if (conn->hmac_receive)
       silc_hmac_free(conn->hmac_receive);
-    if (conn->pending_commands)
-      silc_dlist_uninit(conn->pending_commands);
     if (conn->rekey)
       silc_free(conn->rekey);
 
@@ -1395,6 +1440,12 @@ void silc_client_close_connection(SilcClient client,
 
     silc_client_ftp_free_sessions(client, conn);
 
+    silc_dlist_start(conn->pending_commands);
+    while ((r = silc_dlist_get(conn->pending_commands)) != SILC_LIST_END)
+      silc_dlist_del(conn->pending_commands, r);
+    if (conn->pending_commands)
+      silc_dlist_uninit(conn->pending_commands);
+
     memset(conn, 0, sizeof(*conn));
     silc_client_del_connection(client, conn);
   }
@@ -1402,6 +1453,14 @@ void silc_client_close_connection(SilcClient client,
   silc_socket_free(sock);
 }
 
+/* Closes the connection to the remote end */
+
+void silc_client_close_connection(SilcClient client,
+                                 SilcClientConnection conn)
+{
+  silc_client_close_connection_real(client, NULL, conn);
+}
+
 /* Called when we receive disconnection packet from server. This 
    closes our end properly and displays the reason of the disconnection
    on the screen. */
@@ -1415,7 +1474,7 @@ SILC_TASK_CALLBACK(silc_client_disconnected_by_server_later)
   if (sock == NULL)
     return;
 
-  silc_client_close_connection(client, sock, sock->user_data);
+  silc_client_close_connection_real(client, sock, sock->user_data);
 }
 
 /* Called when we receive disconnection packet from server. This 
@@ -1424,17 +1483,28 @@ SILC_TASK_CALLBACK(silc_client_disconnected_by_server_later)
 
 void silc_client_disconnected_by_server(SilcClient client,
                                        SilcSocketConnection sock,
-                                       SilcBuffer message)
+                                       SilcBuffer packet)
 {
-  char *msg;
+  SilcStatus status;
+  char *message = NULL;
 
   SILC_LOG_DEBUG(("Server disconnected us, sock %d", sock->sock));
 
-  msg = silc_calloc(message->len + 1, sizeof(char));
-  memcpy(msg, message->data, message->len);
+  if (packet->len < 1)
+    return;
+
+  status = (SilcStatus)packet->data[0];
+
+  if (packet->len > 1 &&
+      silc_utf8_valid(packet->data + 1, packet->len - 1))
+    message = silc_memdup(packet->data + 1, packet->len - 1);
+
   client->internal->ops->say(client, sock->user_data, 
-                            SILC_CLIENT_MESSAGE_AUDIT, msg);
-  silc_free(msg);
+                            SILC_CLIENT_MESSAGE_AUDIT, 
+                            "Server closed connection: %s (%d) %s",
+                            silc_get_status_message(status), status,
+                            message ? message : "");
+  silc_free(message);
 
   SILC_SET_DISCONNECTED(sock);
 
@@ -1454,13 +1524,54 @@ void silc_client_error_by_server(SilcClient client,
 {
   char *msg;
 
-  msg = silc_calloc(message->len + 1, sizeof(char));
-  memcpy(msg, message->data, message->len);
+  msg = silc_memdup(message->data, message->len);
   client->internal->ops->say(client, sock->user_data, 
                             SILC_CLIENT_MESSAGE_AUDIT, msg);
   silc_free(msg);
 }
 
+/* Auto-nicking callback to send NICK command to server. */
+
+SILC_TASK_CALLBACK(silc_client_send_auto_nick)
+{
+  SilcClientConnection conn = (SilcClientConnection)context;
+  SilcClient client = conn->client;
+
+  silc_client_command_send(client, conn, SILC_COMMAND_NICK, 
+                          ++conn->cmd_ident, 1, 1, 
+                          client->nickname, strlen(client->nickname));
+}
+
+/* Client session resuming callback.  If the session was resumed
+   this callback is called after the resuming is completed.  This
+   will call the `connect' client operation to the application
+   since it has not been called yet. */
+
+static void silc_client_resume_session_cb(SilcClient client,
+                                         SilcClientConnection conn,
+                                         bool success,
+                                         void *context)
+{
+  SilcBuffer sidp;
+
+  /* Notify application that connection is created to server */
+  client->internal->ops->connect(client, conn, success ?
+                                SILC_CLIENT_CONN_SUCCESS_RESUME :
+                                SILC_CLIENT_CONN_ERROR);
+
+  if (success) {
+    /* Issue INFO command to fetch the real server name and server
+       information and other stuff. */
+    silc_client_command_register(client, SILC_COMMAND_INFO, NULL, NULL,
+                                silc_client_command_reply_info_i, 0, 
+                                ++conn->cmd_ident);
+    sidp = silc_id_payload_encode(conn->remote_id, SILC_ID_SERVER);
+    silc_client_command_send(client, conn, SILC_COMMAND_INFO,
+                            conn->cmd_ident, 1, 2, sidp->data, sidp->len);
+    silc_buffer_free(sidp);
+  }
+}
+
 /* Processes the received new Client ID from server. Old Client ID is
    deleted from cache and new one is added. */
 
@@ -1471,7 +1582,6 @@ void silc_client_receive_new_id(SilcClient client,
   SilcClientConnection conn = (SilcClientConnection)sock->user_data;
   int connecting = FALSE;
   SilcClientID *client_id = silc_id_payload_get_id(idp);
-  SilcBuffer sidp;
 
   if (!conn->local_entry)
     connecting = TRUE;
@@ -1505,105 +1615,72 @@ void silc_client_receive_new_id(SilcClient client,
     conn->local_entry->username = strdup(client->username);
   if (!conn->local_entry->hostname)
     conn->local_entry->hostname = strdup(client->hostname);
-  conn->local_entry->server = strdup(conn->remote_host);
+  if (!conn->local_entry->server)
+    conn->local_entry->server = strdup(conn->remote_host);
   conn->local_entry->id = conn->local_id;
   conn->local_entry->valid = TRUE;
-  
+  if (!conn->local_entry->channels)
+    conn->local_entry->channels = silc_hash_table_alloc(1, silc_hash_ptr, 
+                                                       NULL, NULL,
+                                                       NULL, NULL, NULL, 
+                                                       TRUE);
+
   /* Put it to the ID cache */
   silc_idcache_add(conn->client_cache, strdup(conn->nickname), conn->local_id, 
                   (void *)conn->local_entry, 0, NULL);
 
   if (connecting) {
-    /* Send NICK command if the nickname was set by the application (and is
-       not same as the username). */
-    if (client->nickname && strcmp(client->nickname, client->username))
-      silc_client_command_send(client, conn, SILC_COMMAND_NICK, 
-                              ++conn->cmd_ident, 1, 1, 
-                              client->nickname, strlen(client->nickname));
-
-    /* Issue INFO command to fetch the real server name and server information
-       and other stuff. */
-    silc_client_command_register(client, SILC_COMMAND_INFO, NULL, NULL,
-                                silc_client_command_reply_info_i, 0, 
-                                ++conn->cmd_ident);
-    sidp = silc_id_payload_encode(conn->remote_id, SILC_ID_SERVER);
-    silc_client_command_send(client, conn, SILC_COMMAND_INFO,
-                            conn->cmd_ident, 1, 2, sidp->data, sidp->len);
-    silc_buffer_free(sidp);
-
-    /* Notify application of successful connection. We do it here now that
-       we've received the Client ID and are allowed to send traffic. */
-    client->internal->ops->connect(client, conn, TRUE);
+    if (!conn->params.detach_data) {
+      SilcBuffer sidp;
+
+      /* Send NICK command if the nickname was set by the application (and is
+        not same as the username). Send this with little timeout. */
+      if (client->nickname && strcmp(client->nickname, client->username))
+       silc_schedule_task_add(client->schedule, 0,
+                              silc_client_send_auto_nick, conn,
+                              1, 0, SILC_TASK_TIMEOUT, SILC_TASK_PRI_NORMAL);
+
+      /* Notify application of successful connection. We do it here now that
+        we've received the Client ID and are allowed to send traffic. */
+      client->internal->ops->connect(client, conn, SILC_CLIENT_CONN_SUCCESS);
+
+      /* Issue INFO command to fetch the real server name and server
+        information and other stuff. */
+      silc_client_command_register(client, SILC_COMMAND_INFO, NULL, NULL,
+                                  silc_client_command_reply_info_i, 0, 
+                                  ++conn->cmd_ident);
+      sidp = silc_id_payload_encode(conn->remote_id, SILC_ID_SERVER);
+      silc_client_command_send(client, conn, SILC_COMMAND_INFO,
+                              conn->cmd_ident, 1, 2, sidp->data, sidp->len);
+      silc_buffer_free(sidp);
+    } else {
+      /* We are resuming session.  Start resolving informations from the
+        server we need to set the client libary in the state before
+        detaching the session.  The connect client operation is called
+        after this is successfully completed */
+      silc_client_resume_session(client, conn, silc_client_resume_session_cb,
+                                NULL);
+    }
   }
 }
 
-/* Processed received Channel ID for a channel. This is called when client
-   joins to channel and server replies with channel ID. The ID is cached. 
-   Returns the created channel entry. This is also called when received
-   channel ID in for example USERS command reply that we do not have. */
-
-SilcChannelEntry silc_client_new_channel_id(SilcClient client,
-                                           SilcSocketConnection sock,
-                                           char *channel_name,
-                                           uint32 mode, 
-                                           SilcIDPayload idp)
-{
-  SilcClientConnection conn = (SilcClientConnection)sock->user_data;
-  SilcChannelEntry channel;
-
-  SILC_LOG_DEBUG(("New channel ID"));
-
-  channel = silc_calloc(1, sizeof(*channel));
-  channel->channel_name = channel_name;
-  channel->id = silc_id_payload_get_id(idp);
-  channel->mode = mode;
-  silc_list_init(channel->clients, struct SilcChannelUserStruct, next);
-
-  /* Put it to the ID cache */
-  silc_idcache_add(conn->channel_cache, channel->channel_name, 
-                  (void *)channel->id, (void *)channel, 0, NULL);
-
-  return channel;
-}
-
-/* Removes a client entry from all channel it has joined. This really is
-   a performance killer (client_entry should have pointers to channel 
-   entry list). */
+/* Removes a client entry from all channels it has joined. */
 
 void silc_client_remove_from_channels(SilcClient client,
                                      SilcClientConnection conn,
                                      SilcClientEntry client_entry)
 {
-  SilcIDCacheEntry id_cache;
-  SilcIDCacheList list;
-  SilcChannelEntry channel;
+  SilcHashTableList htl;
   SilcChannelUser chu;
 
-  if (!silc_idcache_get_all(conn->channel_cache, &list))
-    return;
-
-  silc_idcache_list_first(list, &id_cache);
-  channel = (SilcChannelEntry)id_cache->context;
-  
-  while (channel) {
-    
-    /* Remove client from channel */
-    silc_list_start(channel->clients);
-    while ((chu = silc_list_get(channel->clients)) != SILC_LIST_END) {
-      if (chu->client == client_entry) {
-       silc_list_del(channel->clients, chu);
-       silc_free(chu);
-       break;
-      }
-    }
-
-    if (!silc_idcache_list_next(list, &id_cache))
-      break;
-    
-    channel = (SilcChannelEntry)id_cache->context;
+  silc_hash_table_list(client_entry->channels, &htl);
+  while (silc_hash_table_get(&htl, NULL, (void **)&chu)) {
+    silc_hash_table_del(chu->client->channels, chu->channel);
+    silc_hash_table_del(chu->channel->user_list, chu->client);
+    silc_free(chu);
   }
 
-  silc_idcache_list_free(list);
+  silc_hash_table_list_reset(&htl);
 }
 
 /* Replaces `old' client entries from all channels to `new' client entry.
@@ -1616,35 +1693,20 @@ void silc_client_replace_from_channels(SilcClient client,
                                       SilcClientEntry old,
                                       SilcClientEntry new)
 {
-  SilcIDCacheEntry id_cache;
-  SilcIDCacheList list;
-  SilcChannelEntry channel;
+  SilcHashTableList htl;
   SilcChannelUser chu;
 
-  if (!silc_idcache_get_all(conn->channel_cache, &list))
-    return;
-
-  silc_idcache_list_first(list, &id_cache);
-  channel = (SilcChannelEntry)id_cache->context;
-  
-  while (channel) {
-    
+  silc_hash_table_list(old->channels, &htl);
+  while (silc_hash_table_get(&htl, NULL, (void **)&chu)) {
     /* Replace client entry */
-    silc_list_start(channel->clients);
-    while ((chu = silc_list_get(channel->clients)) != SILC_LIST_END) {
-      if (chu->client == old) {
-       chu->client = new;
-       break;
-      }
-    }
-
-    if (!silc_idcache_list_next(list, &id_cache))
-      break;
+    silc_hash_table_del(chu->client->channels, chu->channel);
+    silc_hash_table_del(chu->channel->user_list, chu->client);
     
-    channel = (SilcChannelEntry)id_cache->context;
+    chu->client = new;
+    silc_hash_table_add(chu->channel->user_list, chu->client, chu);
+    silc_hash_table_add(chu->client->channels, chu->channel, chu);
   }
-
-  silc_idcache_list_free(list);
+  silc_hash_table_list_reset(&htl);
 }
 
 /* Registers failure timeout to process the received failure packet
@@ -1654,7 +1716,7 @@ void silc_client_process_failure(SilcClient client,
                                 SilcSocketConnection sock,
                                 SilcPacketContext *packet)
 {
-  uint32 failure = 0;
+  SilcUInt32 failure = 0;
 
   if (sock->protocol) {
     if (packet->buffer->len >= 4)
@@ -1756,7 +1818,7 @@ void silc_client_connection_auth_request(SilcClient client,
                                         SilcPacketContext *packet)
 {
   SilcClientConnection conn = (SilcClientConnection)sock->user_data;
-  uint16 conn_type, auth_meth;
+  SilcUInt16 conn_type, auth_meth;
   int ret;
 
   /* If we haven't send our request then ignore this one. */