Rewrote file transfer.
[silc.git] / lib / silcclient / command_reply.c
index bfc114fa7a2b575e37bdc7e9cc3c17f58c697544..73e45893ef9f4011f0eb460b2b0b74453ba9c2f0 100644 (file)
@@ -4,7 +4,7 @@
 
   Author: Pekka Riikonen <priikone@silcnet.org>
 
-  Copyright (C) 1997 - 2006 Pekka Riikonen
+  Copyright (C) 1997 - 2007 Pekka Riikonen
 
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -42,7 +42,7 @@ do {                                                          \
   SILC_LOG_DEBUG(("%s", silc_get_command_name(cmd->cmd)));             \
   if (cmd->error != SILC_STATUS_OK) {                                  \
     if (cmd->verbose)                                                  \
-      SAY(cmd->conn->client, cmd->conn, SILC_CLIENT_MESSAGE_ERROR,     \
+      SAY(cmd->conn->client, cmd->conn, SILC_CLIENT_MESSAGE_COMMAND_ERROR, \
          msg "%s", silc_get_status_message(cmd->error));               \
     ERROR_CALLBACK(cmd->error);                                                \
     silc_client_command_process_error(cmd, state_context, cmd->error); \
@@ -199,7 +199,10 @@ SILC_FSM_STATE(silc_client_command_reply)
     return SILC_FSM_FINISH;
   }
 
-  /* Signal command thread that command reply has arrived */
+  /* Signal command thread that command reply has arrived.  We continue
+     command reply processing synchronously because we save the command
+     payload into state context.  No other reply may arrive to this command
+     while we're processing this reply. */
   silc_fsm_set_state_context(&cmd->thread, payload);
   silc_fsm_next(&cmd->thread, silc_client_command_reply_process);
   silc_fsm_continue_sync(&cmd->thread);
@@ -233,6 +236,8 @@ SILC_FSM_STATE(silc_client_command_reply_timeout)
   if (conn->internal->disconnected) {
     SILC_LOG_DEBUG(("Command %s canceled", silc_get_command_name(cmd->cmd)));
     silc_list_del(conn->internal->pending_commands, cmd);
+    if (!cmd->called)
+      ERROR_CALLBACK(SILC_STATUS_ERR_TIMEDOUT);
     return SILC_FSM_FINISH;
   }
 
@@ -478,6 +483,8 @@ SILC_FSM_STATE(silc_client_command_reply_whois)
                              nickname, username, realname, mode);
   }
 
+  silc_rwlock_wrlock(client_entry->internal.lock);
+
   if (fingerprint && fingerprint_len == sizeof(client_entry->fingerprint))
     memcpy(client_entry->fingerprint, fingerprint, fingerprint_len);
 
@@ -489,6 +496,8 @@ SILC_FSM_STATE(silc_client_command_reply_whois)
     client_entry->attrs = silc_attribute_payload_parse(tmp, len);
   }
 
+  silc_rwlock_unlock(client_entry->internal.lock);
+
   /* Parse channel and channel user mode list */
   if (has_channels) {
     channel_list = silc_channel_payload_parse_list(silc_buffer_data(&channels),
@@ -716,6 +725,8 @@ SILC_FSM_STATE(silc_client_command_reply_nick)
     goto out;
   }
 
+  silc_rwlock_wrlock(conn->local_entry->internal.lock);
+
   /* Change the nickname */
   old_client_id = *conn->local_id;
   if (!silc_client_change_nickname(client, conn, conn->local_entry,
@@ -724,6 +735,8 @@ SILC_FSM_STATE(silc_client_command_reply_nick)
     goto out;
   }
 
+  silc_rwlock_unlock(conn->local_entry->internal.lock);
+
   /* Notify application */
   silc_client_command_callback(cmd, conn->local_entry,
                               conn->local_entry->nickname, &old_client_id);
@@ -828,6 +841,8 @@ SILC_FSM_STATE(silc_client_command_reply_topic)
     goto out;
   }
 
+  silc_rwlock_wrlock(channel->internal.lock);
+
   /* Take topic */
   topic = silc_argument_get_arg_type(args, 3, &len);
   if (topic) {
@@ -835,6 +850,8 @@ SILC_FSM_STATE(silc_client_command_reply_topic)
     channel->topic = silc_memdup(topic, len);
   }
 
+  silc_rwlock_unlock(channel->internal.lock);
+
   /* Notify application */
   silc_client_command_callback(cmd, channel, channel->topic);
 
@@ -922,7 +939,7 @@ SILC_FSM_STATE(silc_client_command_reply_kill)
   /* Notify application */
   silc_client_command_callback(cmd, client_entry);
 
-  /* Remove the client from all channels and free it */
+  /* Remove the client */
   if (client_entry) {
     silc_client_remove_from_channels(client, conn, client_entry);
     silc_client_del_client(client, conn, client_entry);
@@ -1183,6 +1200,8 @@ SILC_FSM_STATE(silc_client_command_reply_join)
   }
   silc_buffer_set(&client_mode_list, tmp, len);
 
+  silc_rwlock_wrlock(channel->internal.lock);
+
   /* Add clients we received in the reply to the channel */
   for (i = 0; i < list_count; i++) {
     SilcUInt16 idp_len;
@@ -1201,17 +1220,22 @@ SILC_FSM_STATE(silc_client_command_reply_join)
 
     /* Get client entry */
     client_entry = silc_client_get_client_by_id(client, conn, &id.u.client_id);
-    if (!client_entry)
-      continue;
-
-    /* Join client to the channel */
-    silc_client_add_to_channel(client, conn, channel, client_entry, mode);
+    if (client_entry && client_entry->internal.valid) {
+      /* Join client to the channel */
+      silc_rwlock_wrlock(client_entry->internal.lock);
+      silc_client_add_to_channel(client, conn, channel, client_entry, mode);
+      silc_rwlock_unlock(client_entry->internal.lock);
+    }
     silc_client_unref_client(client, conn, client_entry);
 
-    if (!silc_buffer_pull(&client_id_list, idp_len))
+    if (!silc_buffer_pull(&client_id_list, idp_len)) {
+      silc_rwlock_unlock(channel->internal.lock);
       goto out;
-    if (!silc_buffer_pull(&client_mode_list, 4))
+    }
+    if (!silc_buffer_pull(&client_mode_list, 4)) {
+      silc_rwlock_unlock(channel->internal.lock);
       goto out;
+    }
   }
 
   /* Get hmac */
@@ -1219,9 +1243,10 @@ SILC_FSM_STATE(silc_client_command_reply_join)
   if (hmac) {
     if (!silc_hmac_alloc(hmac, NULL, &channel->internal.hmac)) {
       if (cmd->verbose)
-       SAY(client, conn, SILC_CLIENT_MESSAGE_ERROR,
+       SAY(client, conn, SILC_CLIENT_MESSAGE_COMMAND_ERROR,
            "Cannot join channel: Unsupported HMAC `%s'", hmac);
       ERROR_CALLBACK(SILC_STATUS_ERR_UNKNOWN_ALGORITHM);
+      silc_rwlock_unlock(channel->internal.lock);
       goto out;
     }
   }
@@ -1265,14 +1290,15 @@ SILC_FSM_STATE(silc_client_command_reply_join)
   /* Get channel public key list */
   tmp = silc_argument_get_arg_type(args, 16, &len);
   if (tmp)
-    channel->channel_pubkeys =
-      silc_argument_list_parse_decoded(tmp, len, SILC_ARGUMENT_PUBLIC_KEY);
+    silc_client_channel_save_public_keys(channel, tmp, len);
 
   /* Set current channel */
   conn->current_channel = channel;
 
-  cipher = (channel->internal.channel_key ?
-           silc_cipher_get_name(channel->internal.channel_key) : NULL);
+  silc_rwlock_unlock(channel->internal.lock);
+
+  cipher = (channel->internal.send_key ?
+           silc_cipher_get_name(channel->internal.send_key) : NULL);
   silc_hash_table_list(channel->user_list, &htl);
 
   /* Notify application */
@@ -1366,7 +1392,9 @@ SILC_FSM_STATE(silc_client_command_reply_umode)
   }
 
   SILC_GET32_MSB(mode, tmp);
+  silc_rwlock_wrlock(conn->local_entry->internal.lock);
   conn->local_entry->mode = mode;
+  silc_rwlock_unlock(conn->local_entry->internal.lock);
 
   /* Notify application */
   silc_client_command_callback(cmd, mode);
@@ -1419,15 +1447,17 @@ SILC_FSM_STATE(silc_client_command_reply_cmode)
     goto out;
   }
 
-  /* Save the mode */
-  SILC_GET32_MSB(mode, tmp);
-  channel->mode = mode;
-
   /* Get founder public key */
   tmp = silc_argument_get_arg_type(args, 4, &len);
   if (tmp)
     silc_public_key_payload_decode(tmp, len, &public_key);
 
+  silc_rwlock_wrlock(channel->internal.lock);
+
+  /* Save the mode */
+  SILC_GET32_MSB(mode, tmp);
+  channel->mode = mode;
+
   /* Get user limit */
   tmp = silc_argument_get_arg_type(args, 6, &len);
   if (tmp && len == 4)
@@ -1438,8 +1468,9 @@ SILC_FSM_STATE(silc_client_command_reply_cmode)
   /* Get channel public key(s) */
   tmp = silc_argument_get_arg_type(args, 5, &len);
   if (tmp)
-    channel_pubkeys =
-      silc_argument_list_parse_decoded(tmp, len, SILC_ARGUMENT_PUBLIC_KEY);
+    silc_client_channel_save_public_keys(channel, tmp, len);
+
+  silc_rwlock_unlock(channel->internal.lock);
 
   /* Notify application */
   silc_client_command_callback(cmd, channel, mode, public_key,
@@ -1511,9 +1542,11 @@ SILC_FSM_STATE(silc_client_command_reply_cumode)
   }
 
   /* Save the mode */
+  silc_rwlock_wrlock(channel->internal.lock);
   chu = silc_client_on_channel(channel, client_entry);
   if (chu)
     chu->mode = mode;
+  silc_rwlock_unlock(channel->internal.lock);
 
   /* Notify application */
   silc_client_command_callback(cmd, mode, channel, client_entry);
@@ -1814,7 +1847,7 @@ SILC_FSM_STATE(silc_client_command_reply_users)
   SilcUInt16 idp_len, mode;
   SilcHashTableList htl;
   SilcBufferStruct client_id_list, client_mode_list;
-  SilcChannelEntry channel;
+  SilcChannelEntry channel = NULL;
   SilcClientEntry client_entry;
   SilcID id;
   int i;
@@ -1858,6 +1891,7 @@ SILC_FSM_STATE(silc_client_command_reply_users)
   /* Resolve users we do not know about */
   if (!cmd->resolved) {
     cmd->resolved = TRUE;
+    silc_client_unref_channel(client, conn, channel);
     SILC_FSM_CALL(silc_client_get_clients_by_list(
                          client, conn, list_count, &client_id_list,
                          silc_client_command_reply_users_resolved, cmd));
@@ -1874,6 +1908,8 @@ SILC_FSM_STATE(silc_client_command_reply_users)
 
   SILC_LOG_DEBUG(("channel %s, %d users", channel->channel_name, list_count));
 
+  silc_rwlock_wrlock(channel->internal.lock);
+
   /* Cache the received Client ID's and modes. */
   for (i = 0; i < list_count; i++) {
     SILC_GET16_MSB(idp_len, client_id_list.data + 2);
@@ -1887,14 +1923,21 @@ SILC_FSM_STATE(silc_client_command_reply_users)
     /* Save the client on this channel.  Unknown clients are ignored as they
        clearly do not exist since the resolving didn't find them. */
     client_entry = silc_client_get_client_by_id(client, conn, &id.u.client_id);
-    if (client_entry)
+    if (client_entry && client_entry->internal.valid) {
+      silc_rwlock_wrlock(client_entry->internal.lock);
       silc_client_add_to_channel(client, conn, channel, client_entry, mode);
+      silc_rwlock_unlock(client_entry->internal.lock);
+    }
     silc_client_unref_client(client, conn, client_entry);
 
-    if (!silc_buffer_pull(&client_id_list, idp_len))
+    if (!silc_buffer_pull(&client_id_list, idp_len)) {
+      silc_rwlock_unlock(channel->internal.lock);
       goto out;
-    if (!silc_buffer_pull(&client_mode_list, 4))
+    }
+    if (!silc_buffer_pull(&client_mode_list, 4)) {
+      silc_rwlock_unlock(channel->internal.lock);
       goto out;
+    }
   }
 
   /* Notify application */
@@ -1903,6 +1946,7 @@ SILC_FSM_STATE(silc_client_command_reply_users)
   silc_hash_table_list_reset(&htl);
 
  out:
+  silc_client_unref_channel(client, conn, channel);
   silc_fsm_next(fsm, silc_client_command_reply_processed);
   return SILC_FSM_CONTINUE;
 }
@@ -1955,6 +1999,8 @@ SILC_FSM_STATE(silc_client_command_reply_getkey)
       goto out;
     }
 
+    silc_rwlock_wrlock(client_entry->internal.lock);
+
     /* Save fingerprint */
     if (!client_entry->fingerprint)
       silc_hash_make(conn->internal->sha1hash, tmp + 4, len - 4,
@@ -1964,6 +2010,8 @@ SILC_FSM_STATE(silc_client_command_reply_getkey)
       public_key = NULL;
     }
 
+    silc_rwlock_unlock(client_entry->internal.lock);
+
     /* Notify application */
     silc_client_command_callback(cmd, SILC_ID_CLIENT, client_entry,
                                 client_entry->public_key);
@@ -1976,11 +2024,15 @@ SILC_FSM_STATE(silc_client_command_reply_getkey)
       goto out;
     }
 
+    silc_rwlock_wrlock(server_entry->internal.lock);
+
     if (!server_entry->public_key) {
       server_entry->public_key = public_key;
       public_key = NULL;
     }
 
+    silc_rwlock_unlock(server_entry->internal.lock);
+
     /* Notify application */
     silc_client_command_callback(cmd, SILC_ID_SERVER, server_entry,
                                 server_entry->public_key);