Merged from silc_1_0_branch.
[silc.git] / lib / silcclient / client_notify.c
index 28982fa277fc6ebb66d0d9b78eed4067746636b0..f42ebaa6482bc21f6cd9d16e86df364b0d426847 100644 (file)
 #include "silcclient.h"
 #include "client_internal.h"
 
+/* Context used for resolving client, channel and server info. */
 typedef struct {
-  SilcPacketContext *packet;
+  void *packet;
   void *context;
   SilcSocketConnection sock;
 } *SilcClientNotifyResolve;
 
+SILC_TASK_CALLBACK(silc_client_notify_check_client)
+{ 
+  SilcClientNotifyResolve res = (SilcClientNotifyResolve)context;
+  SilcClient client = res->context;
+  SilcClientConnection conn = res->sock->user_data;
+  SilcClientID *client_id = res->packet;
+  silc_client_get_client_by_id_resolve(client, conn, client_id,
+                                      NULL, NULL, NULL);
+  silc_free(client_id);
+  silc_socket_free(res->sock);
+  silc_free(res);
+}
+
+SILC_TASK_CALLBACK(silc_client_notify_del_client_cb)
+{
+  SilcClientNotifyResolve res = (SilcClientNotifyResolve)context;
+  SilcClient client = res->context;
+  SilcClientConnection conn = res->sock->user_data;
+  SilcClientID *client_id = res->packet;
+  SilcClientEntry client_entry;
+  client_entry = silc_client_get_client_by_id(client, conn, client_id);
+  if (client_entry)
+    silc_client_del_client(client, conn, client_entry);
+  silc_free(client_id);
+  silc_socket_free(res->sock);
+  silc_free(res);
+}
+
 /* Called when notify is received and some async operation (such as command)
    is required before processing the notify message. This calls again the
    silc_client_notify_by_server and reprocesses the original notify packet. */
@@ -43,13 +72,8 @@ static void silc_client_notify_by_server_pending(void *context, void *context2)
 
   SILC_LOG_DEBUG(("Start"));
 
-  if (reply) {
-    SilcCommandStatus status;
-    unsigned char *tmp = silc_argument_get_arg_type(reply->args, 1, NULL);
-    SILC_GET16_MSB(status, tmp);
-    if (status != SILC_STATUS_OK)
-      goto out;
-  }
+  if (reply && !silc_command_get_status(reply->payload, NULL, NULL))
+    goto out;
 
   silc_client_notify_by_server(res->context, res->sock, res->packet);
 
@@ -59,27 +83,101 @@ static void silc_client_notify_by_server_pending(void *context, void *context2)
   silc_free(res);
 }
 
-/* Resolve client information from server by Client ID. */
+/* Resets the channel entry's resolve_cmd_ident after whatever-thing
+   was resolved is completed. */
+
+static void silc_client_channel_cond(void *context, void *context2)
+{
+  SilcClientNotifyResolve res = (SilcClientNotifyResolve)context;
+  SilcClient client = res->context;
+  SilcClientConnection conn = res->sock->user_data;
+  SilcChannelID *channel_id = res->packet;
+  SilcChannelEntry channel;
+  channel = silc_client_get_channel_by_id(client, conn, channel_id);
+  if (channel)
+    channel->resolve_cmd_ident = 0;
+  silc_free(channel_id);
+  silc_socket_free(res->sock);
+  silc_free(res);
+}
+
+/* Function that starts waiting for the `cmd_ident' to arrive and
+   marks the channel info being resolved.  */
+
+static void silc_client_channel_set_wait(SilcClient client,
+                                        SilcClientConnection conn,
+                                        SilcChannelEntry channel,
+                                        SilcUInt16 cmd_ident)
+{
+  SilcClientNotifyResolve res;
+
+  if (!channel->resolve_cmd_ident) {
+    res = silc_calloc(1, sizeof(*res));
+    res->context = client;
+    res->sock = silc_socket_dup(conn->sock);
+    res->packet = silc_id_dup(channel->id, SILC_ID_CHANNEL);
+    silc_client_command_pending(conn, SILC_COMMAND_NONE, cmd_ident,
+                               silc_client_channel_cond, res);
+    channel->resolve_cmd_ident = cmd_ident;
+  }
+}
+
+/* Attaches to the channel's resolving cmd ident and calls the 
+   notify handling with `packet' after it's received. */
+
+static void silc_client_channel_wait(SilcClient client,
+                                    SilcClientConnection conn,
+                                    SilcChannelEntry channel,
+                                    SilcPacketContext *packet)
+{
+  SilcClientNotifyResolve res;
+
+  if (!channel->resolve_cmd_ident)
+    return;
+
+  res = silc_calloc(1, sizeof(*res));
+  res->packet = silc_packet_context_dup(packet);
+  res->context = client;
+  res->sock = silc_socket_dup(conn->sock);
+
+  silc_client_command_pending(conn, SILC_COMMAND_NONE,
+                             channel->resolve_cmd_ident,
+                             silc_client_notify_by_server_pending, res);
+}
+
+/* Resolve client, channel or server information. */
 
 static void silc_client_notify_by_server_resolve(SilcClient client,
                                                 SilcClientConnection conn,
                                                 SilcPacketContext *packet,
-                                                SilcClientID *client_id)
+                                                SilcIdType id_type,
+                                                void *id)
 {
   SilcClientNotifyResolve res = silc_calloc(1, sizeof(*res));
-  SilcBuffer idp = silc_id_payload_encode(client_id, SILC_ID_CLIENT);
+  SilcBuffer idp = silc_id_payload_encode(id, id_type);
 
   res->packet = silc_packet_context_dup(packet);
   res->context = client;
   res->sock = silc_socket_dup(conn->sock);
 
-  silc_client_command_register(client, SILC_COMMAND_WHOIS, NULL, NULL,
-                              silc_client_command_reply_whois_i, 0,
-                              ++conn->cmd_ident);
-  silc_client_command_send(client, conn, SILC_COMMAND_WHOIS, conn->cmd_ident,
-                          1, 3, idp->data, idp->len);
-  silc_client_command_pending(conn, SILC_COMMAND_WHOIS, conn->cmd_ident,
-                             silc_client_notify_by_server_pending, res);
+  /* For client resolving use WHOIS, and otherwise use IDENTIFY */
+  if (id_type == SILC_ID_CLIENT) {
+    silc_client_command_register(client, SILC_COMMAND_WHOIS, NULL, NULL,
+                                silc_client_command_reply_whois_i, 0,
+                                ++conn->cmd_ident);
+    silc_client_command_send(client, conn, SILC_COMMAND_WHOIS, conn->cmd_ident,
+                            1, 4, idp->data, idp->len);
+    silc_client_command_pending(conn, SILC_COMMAND_WHOIS, conn->cmd_ident,
+                               silc_client_notify_by_server_pending, res);
+  } else {
+    silc_client_command_register(client, SILC_COMMAND_IDENTIFY, NULL, NULL,
+                                silc_client_command_reply_identify_i, 0,
+                                ++conn->cmd_ident);
+    silc_client_command_send(client, conn, SILC_COMMAND_IDENTIFY, 
+                            conn->cmd_ident, 1, 5, idp->data, idp->len);
+    silc_client_command_pending(conn, SILC_COMMAND_IDENTIFY, conn->cmd_ident,
+                               silc_client_notify_by_server_pending, res);
+  }
   silc_buffer_free(idp);
 }
 
@@ -95,7 +193,8 @@ void silc_client_notify_by_server(SilcClient client,
   SilcNotifyType type;
   SilcArgumentPayload args;
 
-  SilcIDPayload idp;
+  void *id;
+  SilcIdType id_type;
   SilcClientID *client_id = NULL;
   SilcChannelID *channel_id = NULL;
   SilcServerID *server_id = NULL;
@@ -138,7 +237,7 @@ void silc_client_notify_by_server(SilcClient client,
     if (!tmp)
       goto out;
 
-    channel_id = silc_id_payload_parse_id(tmp, tmp_len);
+    channel_id = silc_id_payload_parse_id(tmp, tmp_len, NULL);
     if (!channel_id)
       goto out;
 
@@ -150,14 +249,15 @@ void silc_client_notify_by_server(SilcClient client,
     if (!tmp)
       goto out;
 
-    client_id = silc_id_payload_parse_id(tmp, tmp_len);
+    client_id = silc_id_payload_parse_id(tmp, tmp_len, NULL);
     if (!client_id)
       goto out;
 
     /* Find Client entry and if not found query it */
     client_entry = silc_client_get_client_by_id(client, conn, client_id);
     if (!client_entry) {
-      silc_client_notify_by_server_resolve(client, conn, packet, client_id);
+      silc_client_notify_by_server_resolve(client, conn, packet, 
+                                          SILC_ID_CLIENT, client_id);
       goto out;
     }
 
@@ -184,14 +284,15 @@ void silc_client_notify_by_server(SilcClient client,
     if (!tmp)
       goto out;
 
-    client_id = silc_id_payload_parse_id(tmp, tmp_len);
+    client_id = silc_id_payload_parse_id(tmp, tmp_len, NULL);
     if (!client_id)
       goto out;
 
     /* Find Client entry and if not found query it */
     client_entry = silc_client_get_client_by_id(client, conn, client_id);
     if (!client_entry) {
-      silc_client_notify_by_server_resolve(client, conn, packet, client_id);
+      silc_client_notify_by_server_resolve(client, conn, packet, 
+                                          SILC_ID_CLIENT, client_id);
       goto out;
     }
 
@@ -201,8 +302,10 @@ void silc_client_notify_by_server(SilcClient client,
        client_entry->status &= ~SILC_CLIENT_STATUS_RESOLVING;
        goto out;
       }
+      silc_client_notify_by_server_resolve(client, conn, packet, 
+                                          SILC_ID_CLIENT, client_id);
       client_entry->status |= SILC_CLIENT_STATUS_RESOLVING;
-      silc_client_notify_by_server_resolve(client, conn, packet, client_id);
+      client_entry->resolve_cmd_ident = conn->cmd_ident;
       goto out;
     } else {
       if (client_entry != conn->local_entry)
@@ -214,7 +317,7 @@ void silc_client_notify_by_server(SilcClient client,
     if (!tmp)
       goto out;
 
-    channel_id = silc_id_payload_parse_id(tmp, tmp_len);
+    channel_id = silc_id_payload_parse_id(tmp, tmp_len, NULL);
     if (!channel_id)
       goto out;
 
@@ -251,7 +354,7 @@ void silc_client_notify_by_server(SilcClient client,
     if (!tmp)
       goto out;
 
-    client_id = silc_id_payload_parse_id(tmp, tmp_len);
+    client_id = silc_id_payload_parse_id(tmp, tmp_len, NULL);
     if (!client_id)
       goto out;
 
@@ -278,6 +381,21 @@ void silc_client_notify_by_server(SilcClient client,
       silc_free(chu);
     }
 
+    /* Some client implementations actually quit network by first doing
+       LEAVE and then immediately SIGNOFF.  We'll check for this by doing 
+       check for the client after 5 - 34 seconds.  If it is not valid after
+       that we'll remove the client from cache. */
+    if (!silc_hash_table_count(client_entry->channels)) {
+      SilcClientNotifyResolve res = silc_calloc(1, sizeof(*res));
+      res->context = client;
+      res->sock = silc_socket_dup(conn->sock);
+      res->packet = silc_id_dup(client_id, SILC_ID_CLIENT);
+      silc_schedule_task_add(client->schedule, conn->sock->sock,
+                            silc_client_notify_check_client, res,
+                            (5 + (silc_rng_get_rn16(client->rng) % 29)),
+                            0, SILC_TASK_TIMEOUT, SILC_TASK_PRI_NORMAL);
+    }
+
     /* Notify application. The channel entry is sent last as this notify
        is for channel but application don't know it from the arguments
        sent by server. */
@@ -296,7 +414,7 @@ void silc_client_notify_by_server(SilcClient client,
     if (!tmp)
       goto out;
 
-    client_id = silc_id_payload_parse_id(tmp, tmp_len);
+    client_id = silc_id_payload_parse_id(tmp, tmp_len, NULL);
     if (!client_id)
       goto out;
 
@@ -310,7 +428,7 @@ void silc_client_notify_by_server(SilcClient client,
     silc_client_remove_from_channels(client, conn, client_entry);
 
     /* Remove from cache */
-    silc_idcache_del_by_context(conn->client_cache, client_entry);
+    silc_idcache_del_by_context(conn->internal->client_cache, client_entry);
 
     /* Get signoff message */
     tmp = silc_argument_get_arg_type(args, 2, &tmp_len);
@@ -331,62 +449,80 @@ void silc_client_notify_by_server(SilcClient client,
 
     SILC_LOG_DEBUG(("Notify: TOPIC_SET"));
 
-    /* Get Client ID */
+    /* Get channel entry */
+    channel_id = silc_id_str2id(packet->dst_id, packet->dst_id_len,
+                               SILC_ID_CHANNEL);
+    if (!channel_id)
+      goto out;
+    channel = silc_client_get_channel_by_id(client, conn, channel_id);
+    if (!channel)
+      break;
+
+    /* Get ID */
     tmp = silc_argument_get_arg_type(args, 1, &tmp_len);
     if (!tmp)
       goto out;
-
-    idp = silc_id_payload_parse(tmp, tmp_len);
-    if (!idp)
+    id = silc_id_payload_parse_id(tmp, tmp_len, &id_type);
+    if (!id)
       goto out;
 
     /* Find Client entry */
-    if (silc_id_payload_get_type(idp) == SILC_ID_CLIENT) {
-      client_id = silc_id_payload_parse_id(tmp, tmp_len);
-      if (!client_id) {
-       silc_id_payload_free(idp);
-       goto out;
-      }
-
+    if (id_type == SILC_ID_CLIENT) {
       /* Find Client entry */
-      client_entry = 
-       silc_client_get_client_by_id(client, conn, client_id);
-      if (!client_entry)
-       goto out;
-    } else if (silc_id_payload_get_type(idp) == SILC_ID_SERVER) {
-      server_id = silc_id_payload_parse_id(tmp, tmp_len);
-      if (!server_id) {
-       silc_id_payload_free(idp);
+      client_id = id;
+      client_entry = silc_client_get_client_by_id(client, conn, client_id);
+      if (!client_entry) {
+       silc_client_channel_set_wait(client, conn, channel,
+                                    conn->cmd_ident + 1);
+       silc_client_notify_by_server_resolve(client, conn, packet, 
+                                            SILC_ID_CLIENT, client_id);
        goto out;
       }
-      
+    } else if (id_type == SILC_ID_SERVER) {
+      /* Find Server entry */
+      server_id = id;
       server = silc_client_get_server_by_id(client, conn, server_id);
       if (!server) {
-       silc_id_payload_free(idp);
-       silc_free(server_id);
+       silc_client_channel_set_wait(client, conn, channel,
+                                    conn->cmd_ident + 1);
+       silc_client_notify_by_server_resolve(client, conn, packet, 
+                                            SILC_ID_SERVER, server_id);
+       server = silc_client_add_server(client, conn, NULL, NULL, server_id);
+       if (!server)
+         goto out;
+
+       server->resolve_cmd_ident = conn->cmd_ident;
+       server_id = NULL;
+       goto out;
+      }
+
+      /* If entry being resoled, wait for it before processing this notify */
+      if (server->resolve_cmd_ident) {
+       SilcClientNotifyResolve res = silc_calloc(1, sizeof(*res));
+       res->packet = silc_packet_context_dup(packet);
+       res->context = client;
+       res->sock = silc_socket_dup(conn->sock);
+       silc_client_command_pending(conn, SILC_COMMAND_NONE, 
+                                   server->resolve_cmd_ident,
+                                   silc_client_notify_by_server_pending, res);
        goto out;
       }
       
       /* Save the pointer to the client_entry pointer */
       client_entry = (SilcClientEntry)server;
-      silc_free(server_id);
     } else {
-      channel_id = silc_id_payload_parse_id(tmp, tmp_len);
-      if (!channel_id) {
-       silc_id_payload_free(idp);
-       goto out;
-      }
-      
-      channel = silc_client_get_channel_by_id(client, conn, channel_id);
-      if (!channel) {
-       silc_id_payload_free(idp);
-       silc_free(channel_id);
+      /* Find Channel entry */
+      silc_free(channel_id);
+      channel_id = id;
+      client_entry = (SilcClientEntry)
+       silc_client_get_channel_by_id(client, conn, channel_id);
+      if (!client_entry) {
+       silc_client_channel_set_wait(client, conn, channel,
+                                    conn->cmd_ident + 1);
+       silc_client_notify_by_server_resolve(client, conn, packet, 
+                                            SILC_ID_CHANNEL, channel_id);
        goto out;
       }
-      
-      /* Save the pointer to the client_entry pointer */
-      client_entry = (SilcClientEntry)channel;
-      silc_free(channel_id);
     }
 
     /* Get topic */
@@ -394,23 +530,18 @@ void silc_client_notify_by_server(SilcClient client,
     if (!tmp)
       goto out;
 
-    /* Get channel entry */
-    channel_id = silc_id_str2id(packet->dst_id, packet->dst_id_len,
-                               SILC_ID_CHANNEL);
-    if (!channel_id)
+    /* If information is being resolved for this channel, wait for it */
+    if (channel->resolve_cmd_ident) {
+      silc_client_channel_wait(client, conn, channel, packet);
       goto out;
-    channel = silc_client_get_channel_by_id(client, conn, channel_id);
-    if (!channel)
-      break;
+    }
 
     /* Notify application. The channel entry is sent last as this notify
        is for channel but application don't know it from the arguments
        sent by server. */
-    client->internal->ops->notify(client, conn, type, 
-                                 silc_id_payload_get_type(idp),
+    client->internal->ops->notify(client, conn, type, id_type,
                                  client_entry, tmp, channel);
 
-    silc_id_payload_free(idp);
     break;
 
   case SILC_NOTIFY_TYPE_NICK_CHANGE:
@@ -428,12 +559,12 @@ void silc_client_notify_by_server(SilcClient client,
     if (!tmp)
       goto out;
 
-    client_id = silc_id_payload_parse_id(tmp, tmp_len);
+    client_id = silc_id_payload_parse_id(tmp, tmp_len, NULL);
     if (!client_id)
       goto out;
 
     /* Ignore my ID */
-    if (SILC_ID_CLIENT_COMPARE(client_id, conn->local_id))
+    if (conn->local_id && SILC_ID_CLIENT_COMPARE(client_id, conn->local_id))
       break;
 
     /* Find old Client entry */
@@ -441,6 +572,19 @@ void silc_client_notify_by_server(SilcClient client,
     if (!client_entry)
       goto out;
     silc_free(client_id);
+    client_id = NULL;
+
+    /* Wait for resolving if necessary */
+    if (client_entry->status & SILC_CLIENT_STATUS_RESOLVING) {
+      SilcClientNotifyResolve res = silc_calloc(1, sizeof(*res));
+      res->packet = silc_packet_context_dup(packet);
+      res->context = client;
+      res->sock = silc_socket_dup(conn->sock);
+      silc_client_command_pending(conn, SILC_COMMAND_NONE, 
+                                 client_entry->resolve_cmd_ident,
+                                 silc_client_notify_by_server_pending, res);
+      goto out;
+    }
 
     client_entry->valid = FALSE;
 
@@ -449,44 +593,70 @@ void silc_client_notify_by_server(SilcClient client,
     if (!tmp)
       goto out;
 
-    client_id = silc_id_payload_parse_id(tmp, tmp_len);
+    client_id = silc_id_payload_parse_id(tmp, tmp_len, NULL);
     if (!client_id)
       goto out;
 
-    /* Find Client entry and if not found resolve it */
-    client_entry2 = silc_client_get_client_by_id(client, conn, client_id);
-    if (!client_entry2) {
-      /* Resolve the entry information */
-      silc_client_notify_by_server_resolve(client, conn, packet, client_id);
-
-      /* Add the new entry even though we resolved it. This is because we
-        want to replace the old entry with the new entry here right now. */
-      client_entry2 = 
-       silc_client_add_client(client, conn, NULL, NULL, NULL, 
-                              silc_id_dup(client_id, SILC_ID_CLIENT), 
-                              client_entry->mode);
-
-      /* Replace old ID entry with new one on all channels. */
-      silc_client_replace_from_channels(client, conn, client_entry,
-                                       client_entry2);
-    } else {
-      if (client_entry2 != conn->local_entry)
-       silc_client_nickname_format(client, conn, client_entry2);
-
-      /* Remove the old from cache */
-      silc_idcache_del_by_context(conn->client_cache, client_entry);
+    /* Take the nickname */
+    tmp = silc_argument_get_arg_type(args, 3, NULL);
+    if (!tmp)
+      goto out;
 
-      /* Replace old ID entry with new one on all channels. */
-      silc_client_replace_from_channels(client, conn, client_entry,
-                                       client_entry2);
+    /* Check whether nickname changed at all.  It is possible that nick
+       change notify is received but nickname didn't changed, only the
+       ID changes.  Check whether the hashes in the Client ID match, if
+       they do nickname didn't change. */
+    if (SILC_ID_COMPARE_HASH(client_entry->id, client_id)) {
+      /* Nickname didn't change. Update only the ID */
+      silc_idcache_del_by_context(conn->internal->client_cache,
+                                 client_entry);
+      silc_free(client_entry->id);
+      client_entry->id = silc_id_dup(client_id, SILC_ID_CLIENT);
+      silc_idcache_add(conn->internal->client_cache, strdup(tmp),
+                      client_entry->id, client_entry, 0, NULL);
 
       /* Notify application */
       client->internal->ops->notify(client, conn, type, 
-                                   client_entry, client_entry2);
-
-      /* Free data */
-      silc_client_del_client_entry(client, conn, client_entry);
+                                   client_entry, client_entry);
+      break;
     }
+
+    /* Create new client entry, and save all old information with the
+       new nickname and client ID */
+    client_entry2 = silc_client_add_client(client, conn, NULL, NULL, 
+                                          client_entry->realname,
+                                          silc_id_dup(client_id, 
+                                                      SILC_ID_CLIENT), 0);
+    if (!client_entry2)
+      goto out;
+
+    if (client_entry->server)
+      client_entry2->server = strdup(client_entry->server);
+    if (client_entry->username)
+      client_entry2->username = strdup(client_entry->username);
+    if (client_entry->hostname)
+      client_entry2->hostname = strdup(client_entry->hostname);
+    client_entry2->fingerprint = client_entry->fingerprint;
+    client_entry2->fingerprint_len = client_entry->fingerprint_len;
+    client_entry->fingerprint = NULL;
+    client_entry->fingerprint_len = NULL;
+    silc_client_update_client(client, conn, client_entry2, tmp, NULL, NULL,
+                             client_entry->mode);
+
+    /* Remove the old from cache */
+    silc_idcache_del_by_context(conn->internal->client_cache, client_entry);
+    
+    /* Replace old ID entry with new one on all channels. */
+    silc_client_replace_from_channels(client, conn, client_entry,
+                                     client_entry2);
+
+    /* Notify application */
+    client->internal->ops->notify(client, conn, type, 
+                                 client_entry, client_entry2);
+    
+    /* Free old client entry */
+    silc_client_del_client_entry(client, conn, client_entry);
+
     break;
 
   case SILC_NOTIFY_TYPE_CMODE_CHANGE:
@@ -496,66 +666,114 @@ void silc_client_notify_by_server(SilcClient client,
 
     SILC_LOG_DEBUG(("Notify: CMODE_CHANGE"));
 
-    /* Get Client ID */
+    /* Get channel entry */
+    channel_id = silc_id_str2id(packet->dst_id, packet->dst_id_len,
+                               SILC_ID_CHANNEL);
+    if (!channel_id)
+      goto out;
+    channel = silc_client_get_channel_by_id(client, conn, channel_id);
+    if (!channel)
+      goto out;
+
+    /* Get ID */
     tmp = silc_argument_get_arg_type(args, 1, &tmp_len);
     if (!tmp)
       goto out;
-
-    idp = silc_id_payload_parse(tmp, tmp_len);
-    if (!idp)
+    id = silc_id_payload_parse_id(tmp, tmp_len, &id_type);
+    if (!id)
       goto out;
 
     /* Find Client entry */
-    if (silc_id_payload_get_type(idp) == SILC_ID_CLIENT) {
-      client_id = silc_id_payload_parse_id(tmp, tmp_len);
-      if (!client_id) {
-       silc_id_payload_free(idp);
-       goto out;
-      }
-
+    if (id_type == SILC_ID_CLIENT) {
+      /* Find Client entry */
+      client_id = id;
       client_entry = silc_client_get_client_by_id(client, conn, client_id);
       if (!client_entry) {
-       silc_id_payload_free(idp);
+       silc_client_channel_set_wait(client, conn, channel,
+                                    conn->cmd_ident + 1);
+       silc_client_notify_by_server_resolve(client, conn, packet, 
+                                            SILC_ID_CLIENT, client_id);
        goto out;
       }
-    } else {
-      server_id = silc_id_payload_parse_id(tmp, tmp_len);
-      if (!server_id) {
-       silc_id_payload_free(idp);
+
+      if (!client_entry->nickname) {
+       if (client_entry->status & SILC_CLIENT_STATUS_RESOLVING) {
+         /* Attach to existing resolving */
+         SilcClientNotifyResolve res = silc_calloc(1, sizeof(*res));
+         res->packet = silc_packet_context_dup(packet);
+         res->context = client;
+         res->sock = silc_socket_dup(conn->sock);
+         silc_client_command_pending(conn, SILC_COMMAND_NONE, 
+                                     client_entry->resolve_cmd_ident,
+                                     silc_client_notify_by_server_pending,
+                                     res);
+         goto out;
+       }
+
+       /* Do new resolving */
+       silc_client_channel_set_wait(client, conn, channel,
+                                    conn->cmd_ident + 1);
+       silc_client_notify_by_server_resolve(client, conn, packet, 
+                                            SILC_ID_CLIENT, client_id);
        goto out;
       }
-      
+    } else if (id_type == SILC_ID_SERVER) {
+      /* Find Server entry */
+      server_id = id;
       server = silc_client_get_server_by_id(client, conn, server_id);
       if (!server) {
-       silc_id_payload_free(idp);
-       silc_free(server_id);
+       silc_client_channel_set_wait(client, conn, channel,
+                                    conn->cmd_ident + 1);
+       silc_client_notify_by_server_resolve(client, conn, packet, 
+                                            SILC_ID_SERVER, server_id);
+       server = silc_client_add_server(client, conn, NULL, NULL, server_id);
+       if (!server)
+         goto out;
+
+       server->resolve_cmd_ident = conn->cmd_ident;
+       server_id = NULL;
+       goto out;
+      }
+
+      /* If entry being resoled, wait for it before processing this notify */
+      if (server->resolve_cmd_ident) {
+       SilcClientNotifyResolve res = silc_calloc(1, sizeof(*res));
+       res->packet = silc_packet_context_dup(packet);
+       res->context = client;
+       res->sock = silc_socket_dup(conn->sock);
+       silc_client_command_pending(conn, SILC_COMMAND_NONE, 
+                                   server->resolve_cmd_ident,
+                                   silc_client_notify_by_server_pending, res);
        goto out;
       }
       
       /* Save the pointer to the client_entry pointer */
       client_entry = (SilcClientEntry)server;
-      silc_free(server_id);
+    } else {
+      /* Find Channel entry */
+      silc_free(channel_id);
+      channel_id = id;
+      client_entry = (SilcClientEntry)
+       silc_client_get_channel_by_id(client, conn, channel_id);
+      if (!client_entry) {
+       silc_client_channel_set_wait(client, conn, channel,
+                                    conn->cmd_ident + 1);
+       silc_client_notify_by_server_resolve(client, conn, packet, 
+                                            SILC_ID_CHANNEL, channel_id);
+       goto out;
+      }
     }
 
     /* Get the mode */
     tmp = silc_argument_get_arg_type(args, 2, &tmp_len);
-    if (!tmp) {
-      silc_id_payload_free(idp);
+    if (!tmp)
       goto out;
-    }
 
     SILC_GET32_MSB(mode, tmp);
 
-    /* Get channel entry */
-    channel_id = silc_id_str2id(packet->dst_id, packet->dst_id_len,
-                               SILC_ID_CHANNEL);
-    if (!channel_id) {
-      silc_id_payload_free(idp);
-      goto out;
-    }
-    channel = silc_client_get_channel_by_id(client, conn, channel_id);
-    if (!channel) {
-      silc_id_payload_free(idp);
+    /* If information is being resolved for this channel, wait for it */
+    if (channel->resolve_cmd_ident) {
+      silc_client_channel_wait(client, conn, channel, packet);
       goto out;
     }
 
@@ -583,11 +801,8 @@ void silc_client_notify_by_server(SilcClient client,
     /* Notify application. The channel entry is sent last as this notify
        is for channel but application don't know it from the arguments
        sent by server. */
-    client->internal->ops->notify(client, conn, type, 
-                                 silc_id_payload_get_type(idp), 
+    client->internal->ops->notify(client, conn, type, id_type,
                                  client_entry, mode, NULL, tmp, channel);
-
-    silc_id_payload_free(idp);
     break;
 
   case SILC_NOTIFY_TYPE_CUMODE_CHANGE:
@@ -597,20 +812,102 @@ void silc_client_notify_by_server(SilcClient client,
 
     SILC_LOG_DEBUG(("Notify: CUMODE_CHANGE"));
 
-    /* Get Client ID */
+    /* Get channel entry */
+    channel_id = silc_id_str2id(packet->dst_id, packet->dst_id_len,
+                               SILC_ID_CHANNEL);
+    if (!channel_id)
+      goto out;
+    channel = silc_client_get_channel_by_id(client, conn, channel_id);
+    if (!channel)
+      break;
+
+    /* Get ID */
     tmp = silc_argument_get_arg_type(args, 1, &tmp_len);
     if (!tmp)
       goto out;
-
-    client_id = silc_id_payload_parse_id(tmp, tmp_len);
-    if (!client_id)
+    id = silc_id_payload_parse_id(tmp, tmp_len, &id_type);
+    if (!id)
       goto out;
 
     /* Find Client entry */
-    client_entry = silc_client_get_client_by_id(client, conn, client_id);
-    if (!client_entry) {
-      silc_client_notify_by_server_resolve(client, conn, packet, client_id);
-      goto out;
+    if (id_type == SILC_ID_CLIENT) {
+      /* Find Client entry */
+      client_id = id;
+      client_entry = silc_client_get_client_by_id(client, conn, client_id);
+      if (!client_entry) {
+       silc_client_channel_set_wait(client, conn, channel,
+                                    conn->cmd_ident + 1);
+       silc_client_notify_by_server_resolve(client, conn, packet, 
+                                            SILC_ID_CLIENT, client_id);
+       goto out;
+      }
+
+      if (!client_entry->nickname) {
+       if (client_entry->status & SILC_CLIENT_STATUS_RESOLVING) {
+         /* Attach to existing resolving */
+         SilcClientNotifyResolve res = silc_calloc(1, sizeof(*res));
+         res->packet = silc_packet_context_dup(packet);
+         res->context = client;
+         res->sock = silc_socket_dup(conn->sock);
+         silc_client_command_pending(conn, SILC_COMMAND_NONE, 
+                                     client_entry->resolve_cmd_ident,
+                                     silc_client_notify_by_server_pending,
+                                     res);
+         goto out;
+       }
+
+       /* Do new resolving */
+       silc_client_channel_set_wait(client, conn, channel,
+                                    conn->cmd_ident + 1);
+       silc_client_notify_by_server_resolve(client, conn, packet, 
+                                            SILC_ID_CLIENT, client_id);
+       goto out;
+      }
+    } else if (id_type == SILC_ID_SERVER) {
+      /* Find Server entry */
+      server_id = id;
+      server = silc_client_get_server_by_id(client, conn, server_id);
+      if (!server) {
+       silc_client_channel_set_wait(client, conn, channel,
+                                    conn->cmd_ident + 1);
+       silc_client_notify_by_server_resolve(client, conn, packet, 
+                                            SILC_ID_SERVER, server_id);
+       server = silc_client_add_server(client, conn, NULL, NULL, server_id);
+       if (!server)
+         goto out;
+
+       server->resolve_cmd_ident = conn->cmd_ident;
+       server_id = NULL;
+       goto out;
+      }
+
+      /* If entry being resoled, wait for it before processing this notify */
+      if (server->resolve_cmd_ident) {
+       SilcClientNotifyResolve res = silc_calloc(1, sizeof(*res));
+       res->packet = silc_packet_context_dup(packet);
+       res->context = client;
+       res->sock = silc_socket_dup(conn->sock);
+       silc_client_command_pending(conn, SILC_COMMAND_NONE, 
+                                   server->resolve_cmd_ident,
+                                   silc_client_notify_by_server_pending, res);
+       goto out;
+      }
+
+      /* Save the pointer to the client_entry pointer */
+      client_entry = (SilcClientEntry)server;
+    } else {
+      /* Find Channel entry */
+      silc_free(channel_id);
+      channel_id = id;
+      client_entry = (SilcClientEntry)
+       silc_client_get_channel_by_id(client, conn, channel_id);
+      if (!client_entry) {
+       silc_client_channel_set_wait(client, conn, channel,
+                                    conn->cmd_ident + 1);
+       silc_client_notify_by_server_resolve(client, conn, packet, 
+                                            SILC_ID_CHANNEL, channel_id);
+       goto out;
+      }
     }
 
     /* Get the mode */
@@ -620,30 +917,30 @@ void silc_client_notify_by_server(SilcClient client,
 
     SILC_GET32_MSB(mode, tmp);
 
+    /* If information is being resolved for this channel, wait for it */
+    if (channel->resolve_cmd_ident) {
+      silc_client_channel_wait(client, conn, channel, packet);
+      goto out;
+    }
+
     /* Get target Client ID */
     tmp = silc_argument_get_arg_type(args, 3, &tmp_len);
     if (!tmp)
       goto out;
 
     silc_free(client_id);
-    client_id = silc_id_payload_parse_id(tmp, tmp_len);
+    client_id = silc_id_payload_parse_id(tmp, tmp_len, NULL);
     if (!client_id)
       goto out;
 
     /* Find target Client entry */
     client_entry2 = 
       silc_client_get_client_by_id(client, conn, client_id);
-    if (!client_entry2)
-      goto out;
-
-    /* Get channel entry */
-    channel_id = silc_id_str2id(packet->dst_id, packet->dst_id_len,
-                               SILC_ID_CHANNEL);
-    if (!channel_id)
+    if (!client_entry2) {
+      silc_client_notify_by_server_resolve(client, conn, packet, 
+                                          SILC_ID_CLIENT, client_id);
       goto out;
-    channel = silc_client_get_channel_by_id(client, conn, channel_id);
-    if (!channel)
-      break;
+    }
 
     /* Save the mode */
     chu = silc_client_on_channel(channel, client_entry2);
@@ -653,8 +950,8 @@ void silc_client_notify_by_server(SilcClient client,
     /* Notify application. The channel entry is sent last as this notify
        is for channel but application don't know it from the arguments
        sent by server. */
-    client->internal->ops->notify(client, conn, type, 
-                                 client_entry, mode, 
+    client->internal->ops->notify(client, conn, type,
+                                 id_type, client_entry, mode, 
                                  client_entry2, channel);
     break;
 
@@ -686,7 +983,7 @@ void silc_client_notify_by_server(SilcClient client,
     tmp = silc_argument_get_arg_type(args, 1, &tmp_len);
     if (!tmp)
       goto out;
-    channel_id = silc_id_payload_parse_id(tmp, tmp_len);
+    channel_id = silc_id_payload_parse_id(tmp, tmp_len, NULL);
     if (!channel_id)
       goto out;
 
@@ -696,17 +993,19 @@ void silc_client_notify_by_server(SilcClient client,
       goto out;
 
     silc_free(channel_id);
+    channel_id = NULL;
 
     /* Get the new ID */
     tmp = silc_argument_get_arg_type(args, 2, &tmp_len);
     if (!tmp)
       goto out;
-    channel_id = silc_id_payload_parse_id(tmp, tmp_len);
+    channel_id = silc_id_payload_parse_id(tmp, tmp_len, NULL);
     if (!channel_id)
       goto out;
 
     /* Replace the Channel ID */
-    silc_client_replace_channel_id(client, conn, channel, channel_id);
+    if (silc_client_replace_channel_id(client, conn, channel, channel_id))
+      channel_id = NULL;
 
     /* Notify application */
     client->internal->ops->notify(client, conn, type, channel, channel);
@@ -724,7 +1023,7 @@ void silc_client_notify_by_server(SilcClient client,
     if (!tmp)
       goto out;
 
-    client_id = silc_id_payload_parse_id(tmp, tmp_len);
+    client_id = silc_id_payload_parse_id(tmp, tmp_len, NULL);
     if (!client_id)
       goto out;
 
@@ -742,17 +1041,19 @@ void silc_client_notify_by_server(SilcClient client,
     if (!channel)
       break;
 
-    /* Get the kicker */
+    /* From protocol version 1.1 we get the kicker's client ID as well */
     tmp = silc_argument_get_arg_type(args, 3, &tmp_len);
     if (tmp) {
-      client_id = silc_id_payload_parse_id(tmp, tmp_len);
+      silc_free(client_id);
+      client_id = silc_id_payload_parse_id(tmp, tmp_len, NULL);
       if (!client_id)
        goto out;
 
       /* Find kicker's client entry and if not found resolve it */
       client_entry2 = silc_client_get_client_by_id(client, conn, client_id);
       if (!client_entry2) {
-       silc_client_notify_by_server_resolve(client, conn, packet, client_id);
+       silc_client_notify_by_server_resolve(client, conn, packet, 
+                                            SILC_ID_CLIENT, client_id);
        goto out;
       } else {
        if (client_entry2 != conn->local_entry)
@@ -769,50 +1070,136 @@ void silc_client_notify_by_server(SilcClient client,
     client->internal->ops->notify(client, conn, type, client_entry, tmp, 
                                  client_entry2, channel);
 
-    /* If I was kicked from channel, remove the channel */
+    /* Remove kicked client from channel */
     if (client_entry == conn->local_entry) {
+      /* If I was kicked from channel, remove the channel */
       if (conn->current_channel == channel)
        conn->current_channel = NULL;
-      silc_idcache_del_by_id(conn->channel_cache, channel->id);
-      silc_free(channel->channel_name);
-      silc_free(channel->id);
-      silc_free(channel->key);
-      silc_cipher_free(channel->channel_key);
-      silc_free(channel);
+      silc_client_del_channel(client, conn, channel);
+    } else {
+      chu = silc_client_on_channel(channel, client_entry);
+      if (chu) {
+       silc_hash_table_del(client_entry->channels, channel);
+       silc_hash_table_del(channel->user_list, client_entry);
+       silc_free(chu);
+      }
+
+      if (!silc_hash_table_count(client_entry->channels)) {
+       SilcClientNotifyResolve res = silc_calloc(1, sizeof(*res));
+       res->context = client;
+       res->sock = silc_socket_dup(conn->sock);
+       res->packet = silc_id_dup(client_entry->id, SILC_ID_CLIENT);
+       silc_schedule_task_add(client->schedule, conn->sock->sock,
+                              silc_client_notify_check_client, res,
+                              (5 + (silc_rng_get_rn16(client->rng) % 529)),
+                              0, SILC_TASK_TIMEOUT, SILC_TASK_PRI_NORMAL);
+      }
     }
     break;
 
   case SILC_NOTIFY_TYPE_KILLED:
-    /*
-     * A client (maybe me) was killed from the network.
-     */
+    {
+      /*
+       * A client (maybe me) was killed from the network.
+       */
+      char *comment;
+      SilcUInt32 comment_len;
 
-    SILC_LOG_DEBUG(("Notify: KILLED"));
+      SILC_LOG_DEBUG(("Notify: KILLED"));
 
-    /* Get Client ID */
-    tmp = silc_argument_get_arg_type(args, 1, &tmp_len);
-    if (!tmp)
-      goto out;
+      /* Get Client ID */
+      tmp = silc_argument_get_arg_type(args, 1, &tmp_len);
+      if (!tmp)
+       goto out;
 
-    client_id = silc_id_payload_parse_id(tmp, tmp_len);
-    if (!client_id)
-      goto out;
+      client_id = silc_id_payload_parse_id(tmp, tmp_len, NULL);
+      if (!client_id)
+       goto out;
 
-    /* Find Client entry */
-    client_entry = silc_client_get_client_by_id(client, conn, client_id);
-    if (!client_entry)
-      goto out;
+      /* Find Client entry */
+      client_entry = silc_client_get_client_by_id(client, conn, client_id);
+      if (!client_entry)
+       goto out;
 
-    /* Get comment */
-    tmp = silc_argument_get_arg_type(args, 2, &tmp_len);
+      /* Get comment */
+      comment = silc_argument_get_arg_type(args, 2, &comment_len);
+
+      /* From protocol version 1.1 we get killer's client ID as well */
+      tmp = silc_argument_get_arg_type(args, 3, &tmp_len);
+      if (tmp) {
+       silc_free(client_id);
+       client_id = NULL;
+       id = silc_id_payload_parse_id(tmp, tmp_len, &id_type);
+       if (!id)
+         goto out;
+
+       /* Find Client entry */
+       if (id_type == SILC_ID_CLIENT) {
+         /* Find Client entry */
+         client_id = id;
+         client_entry2 = silc_client_get_client_by_id(client, conn, 
+                                                      client_id);
+         if (!client_entry) {
+           silc_client_notify_by_server_resolve(client, conn, packet, 
+                                                SILC_ID_CLIENT, client_id);
+           goto out;
+         }
+       } else if (id_type == SILC_ID_SERVER) {
+         /* Find Server entry */
+         server_id = id;
+         server = silc_client_get_server_by_id(client, conn, server_id);
+         if (!server) {
+           silc_client_notify_by_server_resolve(client, conn, packet, 
+                                                SILC_ID_SERVER, server_id);
+           server = silc_client_add_server(client, conn, NULL, NULL,
+                                           server_id);
+           if (!server)
+             goto out;
+
+           server->resolve_cmd_ident = conn->cmd_ident;
+           server_id = NULL;
+           goto out;
+         }
 
-    /* Notify application. */
-    client->internal->ops->notify(client, conn, type, client_entry, tmp);
+         if (server->resolve_cmd_ident) {
+           SilcClientNotifyResolve res = silc_calloc(1, sizeof(*res));
+           res->packet = silc_packet_context_dup(packet);
+           res->context = client;
+           res->sock = silc_socket_dup(conn->sock);
+           silc_client_command_pending(conn, SILC_COMMAND_NONE, 
+                                       server->resolve_cmd_ident,
+                                       silc_client_notify_by_server_pending,
+                                       res);
+           goto out;
+         }
+      
+         /* Save the pointer to the client_entry pointer */
+         client_entry2 = (SilcClientEntry)server;
+       } else {
+         /* Find Channel entry */
+         channel_id = id;
+         channel = silc_client_get_channel_by_id(client, conn, channel_id);
+         if (!channel) {
+           silc_client_notify_by_server_resolve(client, conn, packet, 
+                                                SILC_ID_CHANNEL, channel_id);
+           goto out;
+         }
+         
+         /* Save the pointer to the client_entry pointer */
+         client_entry2 = (SilcClientEntry)channel;
+         silc_free(channel_id);
+         channel_id = NULL;
+       }
+      }
 
-    if (client_entry != conn->local_entry)
-      /* Remove the client from all channels and free it */
-      silc_client_del_client(client, conn, client_entry);
+      /* Notify application. */
+      client->internal->ops->notify(client, conn, type, client_entry, 
+                                   comment, id_type, client_entry2);
 
+      if (client_entry != conn->local_entry)
+       /* Remove the client from all channels and free it */
+       silc_client_del_client(client, conn, client_entry);
+    }
     break;
     
   case SILC_NOTIFY_TYPE_SERVER_SIGNOFF:
@@ -831,7 +1218,7 @@ void silc_client_notify_by_server(SilcClient client,
        /* Get Client ID */
        tmp = silc_argument_get_arg_type(args, i + 1, &tmp_len);
        if (tmp) {
-         client_id = silc_id_payload_parse_id(tmp, tmp_len);
+         client_id = silc_id_payload_parse_id(tmp, tmp_len, NULL);
          if (!client_id)
            goto out;
          
@@ -868,6 +1255,125 @@ void silc_client_notify_by_server(SilcClient client,
     }
     break;
 
+  case SILC_NOTIFY_TYPE_ERROR:
+    {
+      /*
+       * Some has occurred and server is notifying us about it.
+       */
+      SilcStatus error;
+
+      tmp = silc_argument_get_arg_type(args, 1, &tmp_len);
+      if (!tmp && tmp_len != 1)
+       goto out;
+      error = (SilcStatus)tmp[0];
+
+      SILC_LOG_DEBUG(("Notify: ERROR (%d)", error));
+
+      if (error == SILC_STATUS_ERR_NO_SUCH_CLIENT_ID) {
+       tmp = silc_argument_get_arg_type(args, 2, &tmp_len);
+       if (tmp) {
+         client_id = silc_id_payload_parse_id(tmp, tmp_len, NULL);
+         if (!client_id)
+           goto out;
+         client_entry = silc_client_get_client_by_id(client, conn,
+                                                     client_id);
+         if (client_entry)
+           silc_client_del_client(client, conn, client_entry);
+       }
+      }
+
+      /* Notify application. */
+      client->internal->ops->notify(client, conn, type, error);
+    }
+    break;
+
+  case SILC_NOTIFY_TYPE_WATCH:
+    {
+      /*
+       * Received notify about some client we are watching
+       */
+      SilcNotifyType notify = 0;
+      bool del_client = FALSE;
+
+      SILC_LOG_DEBUG(("Notify: WATCH"));
+
+      /* Get sender Client ID */
+      tmp = silc_argument_get_arg_type(args, 1, &tmp_len);
+      if (!tmp)
+       goto out;
+      client_id = silc_id_payload_parse_id(tmp, tmp_len, NULL);
+      if (!client_id)
+       goto out;
+
+      /* Find Client entry and if not found query it */
+      client_entry = silc_client_get_client_by_id(client, conn, client_id);
+      if (!client_entry) {
+       silc_client_notify_by_server_resolve(client, conn, packet, 
+                                            SILC_ID_CLIENT, client_id);
+       goto out;
+      }
+
+      /* Get user mode */
+      tmp = silc_argument_get_arg_type(args, 3, &tmp_len);
+      if (!tmp || tmp_len != 4)
+       goto out;
+      SILC_GET32_MSB(mode, tmp);
+
+      /* Get notify type */
+      tmp = silc_argument_get_arg_type(args, 4, &tmp_len);
+      if (tmp && tmp_len != 2)
+       goto out;
+      if (tmp)
+       SILC_GET16_MSB(notify, tmp);
+
+      /* Get nickname */
+      tmp = silc_argument_get_arg_type(args, 2, NULL);
+      if (tmp) {
+       char *tmp_nick = NULL;
+
+       if (client->internal->params->nickname_parse)
+         client->internal->params->nickname_parse(client_entry->nickname,
+                                                  &tmp_nick);
+       else
+         tmp_nick = strdup(tmp);
+
+       /* If same nick, the client was new to us and has become "present"
+          to network.  Send NULL as nick to application. */
+       if (tmp_nick && !strcmp(tmp, tmp_nick))
+         tmp = NULL;
+
+       silc_free(tmp_nick);
+      }
+
+      /* Notify application. */
+      client->internal->ops->notify(client, conn, type, client_entry,
+                                   tmp, mode, notify);
+
+      client_entry->mode = mode;
+
+      /* If nickname was changed, remove the client entry unless the
+        client is on some channel */
+      if (tmp && notify == SILC_NOTIFY_TYPE_NICK_CHANGE &&
+         !silc_hash_table_count(client_entry->channels))
+       del_client = TRUE;
+      else if (notify == SILC_NOTIFY_TYPE_SIGNOFF ||
+              notify == SILC_NOTIFY_TYPE_SERVER_SIGNOFF ||
+              notify == SILC_NOTIFY_TYPE_KILLED)
+       del_client = TRUE;
+
+      if (del_client) {
+       SilcClientNotifyResolve res = silc_calloc(1, sizeof(*res));
+       res->context = client;
+       res->sock = silc_socket_dup(conn->sock);
+       res->packet = client_id;
+        client_id = NULL;
+       silc_schedule_task_add(client->schedule, conn->sock->sock,
+                              silc_client_notify_del_client_cb, res,
+                              1, 0, SILC_TASK_TIMEOUT, SILC_TASK_PRI_NORMAL);
+      }
+    }
+    break;
+
   default:
     break;
   }
@@ -876,4 +1382,5 @@ void silc_client_notify_by_server(SilcClient client,
   silc_notify_payload_free(payload);
   silc_free(client_id);
   silc_free(channel_id);
+  silc_free(server_id);
 }