packet_receive.c
- Author: Pekka Riikonen <priikone@poseidon.pspt.fi>
+ Author: Pekka Riikonen <priikone@silcnet.org>
- Copyright (C) 1997 - 2001 Pekka Riikonen
+ Copyright (C) 1997 - 2002 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
#include "serverincludes.h"
#include "server_internal.h"
-extern char *server_version;
-
/* Received notify packet. Server can receive notify packets from router.
Server then relays the notify messages to clients if needed. */
SilcChannelID *channel_id = NULL, *channel_id2;
SilcClientID *client_id, *client_id2;
SilcServerID *server_id;
- SilcChannelEntry channel;
- SilcClientEntry client;
- SilcServerEntry server_entry;
+ SilcIdType id_type;
+ SilcChannelEntry channel = NULL;
+ SilcClientEntry client = NULL, client2 = NULL;
+ SilcServerEntry server_entry = NULL;
SilcChannelClientEntry chl;
- SilcIDCacheEntry cache;
+ SilcIDCacheEntry cache = NULL;
SilcHashTableList htl;
SilcUInt32 mode;
unsigned char *tmp;
SilcUInt32 tmp_len;
bool local;
- SILC_LOG_DEBUG(("Start"));
-
if (sock->type == SILC_SOCKET_TYPE_CLIENT ||
- packet->src_id_type != SILC_ID_SERVER)
- return;
-
- if (!packet->dst_id)
+ packet->src_id_type != SILC_ID_SERVER || !packet->dst_id) {
+ SILC_LOG_DEBUG(("Bad notify packet received"));
return;
+ }
/* If the packet is destined directly to a client then relay the packet
before processing it. */
/* Get the route to the client */
dst_sock = silc_server_get_client_route(server, packet->dst_id,
- packet->dst_id_len, NULL, &idata);
+ packet->dst_id_len, NULL,
+ &idata, NULL);
if (dst_sock)
/* Relay the packet */
silc_server_relay_packet(server, dst_sock, idata->send_key,
- idata->hmac_receive, idata->psn_send++,
+ idata->hmac_send, idata->psn_send++,
packet, TRUE);
}
we will broadcast it. The sending socket really cannot be router or
the router is buggy. If this packet is coming from router then it must
have the broadcast flag set already and we won't do anything. */
- if (!server->standalone && server->server_type == SILC_ROUTER &&
+ if (server->server_type == SILC_ROUTER &&
sock->type == SILC_SOCKET_TYPE_SERVER &&
!(packet->flags & SILC_PACKET_FLAG_BROADCAST)) {
SILC_LOG_DEBUG(("Broadcasting received Notify packet"));
if (!channel_id)
goto out;
- silc_server_packet_send_dest(server, server->router->connection,
- packet->type,
- packet->flags | SILC_PACKET_FLAG_BROADCAST,
+ silc_server_packet_send_dest(server, SILC_PRIMARY_ROUTE(server),
+ packet->type, packet->flags |
+ SILC_PACKET_FLAG_BROADCAST,
channel_id, SILC_ID_CHANNEL,
- packet->buffer->data, packet->buffer->len,
- FALSE);
- silc_server_backup_send_dest(server, (SilcServerEntry)sock->user_data,
+ packet->buffer->data,
+ packet->buffer->len, FALSE);
+ silc_server_backup_send_dest(server, sock->user_data,
packet->type, packet->flags,
channel_id, SILC_ID_CHANNEL,
packet->buffer->data, packet->buffer->len,
FALSE, TRUE);
} else {
/* Packet is destined to client or server */
- silc_server_packet_send(server, server->router->connection,
+ silc_server_packet_send(server, SILC_PRIMARY_ROUTE(server),
packet->type,
packet->flags | SILC_PACKET_FLAG_BROADCAST,
packet->buffer->data, packet->buffer->len,
FALSE);
- silc_server_backup_send(server, (SilcServerEntry)sock->user_data,
+ silc_server_backup_send(server, sock->user_data,
packet->type, packet->flags,
packet->buffer->data, packet->buffer->len,
FALSE, TRUE);
*/
SILC_LOG_DEBUG(("JOIN notify"));
+ if (channel_id)
+ silc_free(channel_id);
+
/* Get Channel 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;
channel = silc_idlist_find_channel_by_id(server->local_list,
channel_id, NULL);
if (!channel) {
+ SILC_LOG_DEBUG(("Notify for unknown channel"));
silc_free(channel_id);
goto out;
}
tmp = silc_argument_get_arg_type(args, 1, &tmp_len);
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;
entry for the client. */
client = silc_idlist_find_client_by_id(server->global_list,
client_id, server->server_type,
- NULL);
+ &cache);
if (!client) {
client = silc_idlist_find_client_by_id(server->local_list,
client_id, server->server_type,
- NULL);
+ &cache);
if (!client) {
/* If router did not find the client the it is bogus */
- if (server->server_type != SILC_SERVER)
+ if (server->server_type != SILC_SERVER) {
+ silc_free(client_id);
goto out;
+ }
client =
silc_idlist_add_client(server->global_list, NULL, NULL, NULL,
client->data.status |= SILC_IDLIST_STATUS_REGISTERED;
}
}
+ silc_free(client_id);
/* Do not process the notify if the client is not registered */
if (!(client->data.status & SILC_IDLIST_STATUS_REGISTERED))
break;
/* Do not add client to channel if it is there already */
- if (silc_server_client_on_channel(client, channel)) {
- SILC_LOG_DEBUG(("Client already on channel"));
+ if (silc_server_client_on_channel(client, channel, NULL)) {
+ SILC_LOG_DEBUG(("Client already on channel %s",
+ channel->channel_name));
break;
}
chl->client = client;
chl->channel = channel;
- /* If this is the first one on the channel then it is the founder of
- the channel. */
- if (!silc_hash_table_count(channel->user_list))
- chl->mode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
+ if (server->server_type != SILC_ROUTER ||
+ sock->type == SILC_SOCKET_TYPE_ROUTER) {
+ /* If this is the first one on the channel then it is the founder of
+ the channel. This is done on normal server and on router if this
+ notify is coming from router */
+ if (!silc_hash_table_count(channel->user_list)) {
+ SILC_LOG_DEBUG(("Client %s is founder on channel",
+ silc_id_render(chl->client->id, SILC_ID_CLIENT)));
+ chl->mode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
+ }
+ }
silc_hash_table_add(channel->user_list, client, chl);
silc_hash_table_add(client->channels, channel, chl);
- silc_free(client_id);
channel->user_count++;
+ channel->disabled = FALSE;
+
+ /* Make sure we don't expire clients that are on channel */
+ if (cache)
+ cache->expire = 0;
+
+ /* Update statistics */
+ if (server->server_type == SILC_ROUTER) {
+ if (sock->type != SILC_SOCKET_TYPE_ROUTER)
+ server->stat.cell_chanclients++;
+ server->stat.chanclients++;
+ }
break;
channel = silc_idlist_find_channel_by_id(server->local_list,
channel_id, NULL);
if (!channel) {
+ SILC_LOG_DEBUG(("Notify for unknown channel"));
silc_free(channel_id);
goto out;
}
silc_free(channel_id);
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) {
silc_free(channel_id);
goto out;
}
}
silc_free(client_id);
+ silc_free(channel_id);
/* Check if on channel */
- if (!silc_server_client_on_channel(client, channel))
+ if (!silc_server_client_on_channel(client, channel, NULL))
break;
/* Send the leave notify to channel */
tmp = silc_argument_get_arg_type(args, 1, &tmp_len);
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;
/* Update statistics */
server->stat.clients--;
- if (server->server_type == SILC_ROUTER)
+ if (server->stat.cell_clients)
server->stat.cell_clients--;
SILC_OPER_STATS_UPDATE(client, server, SILC_UMODE_SERVER_OPERATOR);
SILC_OPER_STATS_UPDATE(client, router, SILC_UMODE_ROUTER_OPERATOR);
+ silc_schedule_task_del_by_context(server->schedule, client);
/* Remove the client from all channels. */
- silc_server_remove_from_channels(server, NULL, client, TRUE, tmp, FALSE);
+ silc_server_remove_from_channels(server, NULL, client, TRUE,
+ tmp, FALSE, FALSE);
+
+ /* Check if anyone is watching this nickname */
+ if (server->server_type == SILC_ROUTER)
+ silc_server_check_watcher_list(server, client, NULL,
+ SILC_NOTIFY_TYPE_SIGNOFF);
+
+ /* Remove this client from watcher list if it is */
+ silc_server_del_from_watcher_list(server, client);
client->data.status &= ~SILC_IDLIST_STATUS_REGISTERED;
cache->expire = SILC_ID_CACHE_EXPIRE_DEF;
SILC_LOG_DEBUG(("TOPIC SET notify"));
+ /* 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, &id_type);
+ if (!client_id)
+ goto out;
+
+ /* Get client entry */
+ if (id_type == SILC_ID_CLIENT) {
+ client = silc_idlist_find_client_by_id(server->global_list,
+ client_id, TRUE, &cache);
+ if (!client) {
+ client = silc_idlist_find_client_by_id(server->local_list,
+ client_id, TRUE, &cache);
+ if (!client) {
+ silc_free(client_id);
+ goto out;
+ }
+ }
+ silc_free(client_id);
+ }
+
+ /* Get the topic */
+ tmp = silc_argument_get_arg_type(args, 2, &tmp_len);
+ if (!tmp) {
+ silc_free(channel_id);
+ goto out;
+ }
+
if (!channel_id) {
channel_id = silc_id_str2id(packet->dst_id, packet->dst_id_len,
packet->dst_id_type);
channel = silc_idlist_find_channel_by_id(server->local_list,
channel_id, NULL);
if (!channel) {
+ SILC_LOG_DEBUG(("Notify for unknown channel"));
silc_free(channel_id);
goto out;
}
}
+ silc_free(channel_id);
- /* Get the topic */
- tmp = silc_argument_get_arg_type(args, 2, &tmp_len);
- if (!tmp) {
- silc_free(channel_id);
+ if (channel->topic && !strcmp(channel->topic, tmp)) {
+ SILC_LOG_DEBUG(("Topic is already set and same"));
goto out;
}
+ if (client) {
+ /* Get user's channel entry and check that topic set is allowed. */
+ if (!silc_server_client_on_channel(client, channel, &chl))
+ goto out;
+ if (channel->mode & SILC_CHANNEL_MODE_TOPIC &&
+ !(chl->mode & SILC_CHANNEL_UMODE_CHANOP) &&
+ !(chl->mode & SILC_CHANNEL_UMODE_CHANFO)) {
+ SILC_LOG_DEBUG(("Topic change is not allowed"));
+ goto out;
+ }
+ }
+
+ /* Change the topic */
silc_free(channel->topic);
channel->topic = strdup(tmp);
/* Send the same notify to the channel */
- silc_server_packet_send_to_channel(server, sock, channel, packet->type,
+ silc_server_packet_send_to_channel(server, NULL, channel, packet->type,
FALSE, packet->buffer->data,
packet->buffer->len, FALSE);
- silc_free(channel_id);
break;
case SILC_NOTIFY_TYPE_NICK_CHANGE:
* Distribute the notify to local clients on the channel
*/
unsigned char *id, *id2;
+ char *nickname;
+ SilcUInt32 nickname_len;
SILC_LOG_DEBUG(("NICK CHANGE notify"));
id = silc_argument_get_arg_type(args, 1, &tmp_len);
if (!id)
goto out;
- client_id = silc_id_payload_parse_id(id, tmp_len);
+ client_id = silc_id_payload_parse_id(id, tmp_len, NULL);
if (!client_id)
goto out;
id2 = silc_argument_get_arg_type(args, 2, &tmp_len);
if (!id2)
goto out;
- client_id2 = silc_id_payload_parse_id(id2, tmp_len);
- if (!client_id2)
+ client_id2 = silc_id_payload_parse_id(id2, tmp_len, NULL);
+ if (!client_id2) {
+ silc_free(client_id);
goto out;
+ }
SILC_LOG_DEBUG(("Old Client ID id(%s)",
silc_id_render(client_id, SILC_ID_CLIENT)));
SILC_LOG_DEBUG(("New Client ID id(%s)",
silc_id_render(client_id2, SILC_ID_CLIENT)));
+ /* From protocol version 1.1 we also get the new nickname */
+ nickname = silc_argument_get_arg_type(args, 3, &nickname_len);;
+
/* Replace the Client ID */
- client = silc_idlist_replace_client_id(server->global_list, client_id,
- client_id2);
+ client = silc_idlist_replace_client_id(server,
+ server->global_list, client_id,
+ client_id2, nickname);
if (!client)
- client = silc_idlist_replace_client_id(server->local_list, client_id,
- client_id2);
+ client = silc_idlist_replace_client_id(server,
+ server->local_list, client_id,
+ client_id2, nickname);
if (client) {
- /* The nickname is not valid anymore, set it NULL. This causes that
- the nickname will be queried if someone wants to know it. */
- if (client->nickname)
- silc_free(client->nickname);
- client->nickname = NULL;
-
/* Send the NICK_CHANGE notify type to local clients on the channels
this client is joined to. */
- silc_server_send_notify_on_channels(server, NULL, client,
- SILC_NOTIFY_TYPE_NICK_CHANGE, 2,
- id, tmp_len,
- id2, tmp_len);
+ silc_server_send_notify_on_channels(server, client, client,
+ SILC_NOTIFY_TYPE_NICK_CHANGE, 3,
+ id, tmp_len, id2, tmp_len,
+ nickname, nickname ?
+ nickname_len : 0);
}
silc_free(client_id);
/*
* Distribute the notify to local clients on the channel
*/
-
+
SILC_LOG_DEBUG(("CMODE CHANGE notify"));
-
+
+ /* 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, &id_type);
+ if (!client_id)
+ goto out;
+
+ /* Get client entry */
+ if (id_type == SILC_ID_CLIENT) {
+ client = silc_idlist_find_client_by_id(server->global_list,
+ client_id, TRUE, &cache);
+ if (!client) {
+ client = silc_idlist_find_client_by_id(server->local_list,
+ client_id, TRUE, &cache);
+ if (!client) {
+ silc_free(client_id);
+ goto out;
+ }
+ }
+ }
+ silc_free(client_id);
+
if (!channel_id) {
channel_id = silc_id_str2id(packet->dst_id, packet->dst_id_len,
packet->dst_id_type);
channel = silc_idlist_find_channel_by_id(server->local_list,
channel_id, NULL);
if (!channel) {
+ SILC_LOG_DEBUG(("Notify for unknown channel"));
silc_free(channel_id);
goto out;
}
}
+ silc_free(channel_id);
/* Get the mode */
tmp = silc_argument_get_arg_type(args, 2, &tmp_len);
- if (!tmp) {
- silc_free(channel_id);
+ if (!tmp)
goto out;
- }
-
SILC_GET32_MSB(mode, tmp);
/* Check if mode changed */
- if (channel->mode == mode)
+ if (channel->mode == mode) {
+ SILC_LOG_DEBUG(("Mode is changed already"));
+
+ /* If this mode change has founder mode then we'll enforce the
+ change so that the server gets the real founder public key */
+ if (server->server_type != SILC_SERVER &&
+ sock != SILC_PRIMARY_ROUTE(server) &&
+ mode & SILC_CHANNEL_MODE_FOUNDER_AUTH && channel->founder_key) {
+ SILC_LOG_DEBUG(("Sending founder public key to server"));
+ silc_server_send_notify_cmode(server, sock, FALSE, channel,
+ channel->mode, server->id,
+ SILC_ID_SERVER, channel->cipher,
+ channel->hmac_name,
+ channel->passphrase,
+ channel->founder_key);
+ }
+
+ /* If we received same mode from our primary check whether founder
+ mode and key in the notify is set. We update the founder key
+ here since we may have wrong one */
+ if (server->server_type == SILC_SERVER &&
+ sock == SILC_PRIMARY_ROUTE(server) &&
+ mode & SILC_CHANNEL_MODE_FOUNDER_AUTH) {
+ SILC_LOG_DEBUG(("Founder public key received from router"));
+ tmp = silc_argument_get_arg_type(args, 6, &tmp_len);
+ if (!tmp)
+ break;
+
+ if (channel->founder_key)
+ silc_pkcs_public_key_free(channel->founder_key);
+ channel->founder_key = NULL;
+ silc_pkcs_public_key_payload_decode(tmp, tmp_len,
+ &channel->founder_key);
+ }
+
break;
+ }
- /* Send the same notify to the channel */
- silc_server_packet_send_to_channel(server, sock, channel, packet->type,
- FALSE, packet->buffer->data,
- packet->buffer->len, FALSE);
+ /* Get user's channel entry and check that mode change is allowed */
+ if (client) {
+ if (!silc_server_client_on_channel(client, channel, &chl))
+ goto out;
+ if (!silc_server_check_cmode_rights(server, channel, chl, mode)) {
+ SILC_LOG_DEBUG(("CMODE change is not allowed"));
+ silc_server_send_notify_cmode(server, sock, FALSE, channel,
+ channel->mode, server->id,
+ SILC_ID_SERVER, channel->cipher,
+ channel->hmac_name,
+ channel->passphrase,
+ channel->founder_key);
+ goto out;
+ }
+ } else {
+ /* Assure that server is not removing founder mode from us */
+ if (server->server_type == SILC_ROUTER &&
+ sock != SILC_PRIMARY_ROUTE(server) &&
+ channel->mode & SILC_CHANNEL_MODE_FOUNDER_AUTH &&
+ !(mode & SILC_CHANNEL_MODE_FOUNDER_AUTH)) {
+ SILC_LOG_DEBUG(("Enforcing sender to change channel mode"));
+ silc_server_send_notify_cmode(server, sock, FALSE, channel,
+ channel->mode, server->id,
+ SILC_ID_SERVER, channel->cipher,
+ channel->hmac_name,
+ channel->passphrase,
+ channel->founder_key);
+ goto out;
+ }
+
+ /* If server is adding founder mode, check whether there is founder
+ on channel already and is not from this server */
+ if (server->server_type == SILC_ROUTER &&
+ sock != SILC_PRIMARY_ROUTE(server) &&
+ mode & SILC_CHANNEL_MODE_FOUNDER_AUTH) {
+ silc_hash_table_list(channel->user_list, &htl);
+ while (silc_hash_table_get(&htl, NULL, (void *)&chl))
+ if (chl->mode & SILC_CHANNEL_UMODE_CHANFO &&
+ chl->client->router != sock->user_data) {
+ SILC_LOG_DEBUG(("Enforcing sender to change channel mode"));
+ silc_server_send_notify_cmode(server, sock, FALSE, channel,
+ channel->mode, server->id,
+ SILC_ID_SERVER, channel->cipher,
+ channel->hmac_name,
+ channel->passphrase,
+ channel->founder_key);
+ silc_hash_table_list_reset(&htl);
+ goto out;
+ }
+ silc_hash_table_list_reset(&htl);
+ }
+ }
/* If the channel had private keys set and the mode was removed then
we must re-generate and re-distribute a new channel key */
FALSE : !server->standalone);
}
- /* Change mode */
- channel->mode = mode;
- silc_free(channel_id);
-
/* Get the hmac */
tmp = silc_argument_get_arg_type(args, 4, &tmp_len);
if (tmp) {
/* Set the HMAC key out of current channel key. The client must do
this locally. */
silc_hash_make(silc_hmac_get_hash(channel->hmac), channel->key,
- channel->key_len / 8,
- hash);
+ channel->key_len / 8, hash);
silc_hmac_set_key(channel->hmac, hash,
silc_hash_len(silc_hmac_get_hash(channel->hmac)));
memset(hash, 0, sizeof(hash));
tmp = silc_argument_get_arg_type(args, 5, &tmp_len);
if (tmp) {
silc_free(channel->passphrase);
- channel->passphrase = strdup(tmp);
+ channel->passphrase = silc_memdup(tmp, tmp_len);
+ }
+
+ /* Get founder public key */
+ tmp = silc_argument_get_arg_type(args, 6, &tmp_len);
+ if (tmp && mode & SILC_CHANNEL_MODE_FOUNDER_AUTH) {
+ if (channel->founder_key)
+ silc_pkcs_public_key_free(channel->founder_key);
+ channel->founder_key = NULL;
+ silc_pkcs_public_key_payload_decode(tmp, tmp_len, &channel->founder_key);
+
+ if (!channel->founder_key ||
+ (client && client->data.public_key &&
+ server->server_type == SILC_ROUTER &&
+ !silc_pkcs_public_key_compare(channel->founder_key,
+ client->data.public_key))) {
+ /* A really buggy server isn't checking public keys correctly.
+ It's not possible that the mode setter and founder wouldn't
+ have same public key. */
+ SILC_LOG_DEBUG(("Enforcing sender to change channel mode"));
+
+ mode &= ~SILC_CHANNEL_MODE_FOUNDER_AUTH;
+ silc_server_send_notify_cmode(server, sock, FALSE, channel,
+ mode, server->id, SILC_ID_SERVER,
+ channel->cipher,
+ channel->hmac_name,
+ channel->passphrase, NULL);
+ if (channel->founder_key)
+ silc_pkcs_public_key_free(channel->founder_key);
+ channel->founder_key = NULL;
+ } else if (client && !client->data.public_key) {
+ client->data.public_key =
+ silc_pkcs_public_key_copy(channel->founder_key);
+ }
+ }
+
+ if (mode & SILC_CHANNEL_MODE_FOUNDER_AUTH && !channel->founder_key &&
+ server->server_type == SILC_ROUTER) {
+ SILC_LOG_DEBUG(("Enforcing sender to change channel mode"));
+ mode &= ~SILC_CHANNEL_MODE_FOUNDER_AUTH;
+ silc_server_send_notify_cmode(server, sock, FALSE, channel,
+ mode, server->id, SILC_ID_SERVER,
+ channel->cipher,
+ channel->hmac_name,
+ channel->passphrase, NULL);
+ }
+
+ /* Send the same notify to the channel */
+ silc_server_packet_send_to_channel(server, NULL, channel, packet->type,
+ FALSE, packet->buffer->data,
+ packet->buffer->len, FALSE);
+
+ /* Change mode */
+ channel->mode = mode;
+
+ if (!(channel->mode & SILC_CHANNEL_MODE_FOUNDER_AUTH) &&
+ channel->founder_key) {
+ silc_pkcs_public_key_free(channel->founder_key);
+ channel->founder_key = NULL;
}
break;
*/
SilcChannelClientEntry chl2 = NULL;
bool notify_sent = FALSE;
-
+
SILC_LOG_DEBUG(("CUMODE CHANGE notify"));
-
+
+ /* 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, &id_type);
+ if (!client_id)
+ goto out;
+
+ /* Get client entry */
+ if (id_type == SILC_ID_CLIENT) {
+ client = silc_idlist_find_client_by_id(server->global_list,
+ client_id, TRUE, &cache);
+ if (!client) {
+ client = silc_idlist_find_client_by_id(server->local_list,
+ client_id, TRUE, &cache);
+ if (!client) {
+ silc_free(client_id);
+ goto out;
+ }
+ }
+ }
+ silc_free(client_id);
+
if (!channel_id) {
channel_id = silc_id_str2id(packet->dst_id, packet->dst_id_len,
packet->dst_id_type);
channel = silc_idlist_find_channel_by_id(server->local_list,
channel_id, NULL);
if (!channel) {
+ SILC_LOG_DEBUG(("Notify for unknown channel"));
silc_free(channel_id);
goto out;
}
tmp = silc_argument_get_arg_type(args, 3, &tmp_len);
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;
/* Get client entry */
- client = silc_idlist_find_client_by_id(server->global_list,
- client_id, TRUE, NULL);
- if (!client) {
- client = silc_idlist_find_client_by_id(server->local_list,
- client_id, TRUE, NULL);
- if (!client) {
+ client2 = silc_idlist_find_client_by_id(server->global_list,
+ client_id, TRUE, NULL);
+ if (!client2) {
+ client2 = silc_idlist_find_client_by_id(server->local_list,
+ client_id, TRUE, NULL);
+ if (!client2) {
silc_free(client_id);
goto out;
}
}
silc_free(client_id);
- /* Get entry to the channel user list */
- silc_hash_table_list(channel->user_list, &htl);
- while (silc_hash_table_get(&htl, NULL, (void *)&chl)) {
- /* If the mode is channel founder and we already find a client
- to have that mode on the channel we will enforce the sender
- to change the channel founder mode away. There can be only one
- channel founder on the channel. */
- if (server->server_type == SILC_ROUTER &&
- mode & SILC_CHANNEL_UMODE_CHANFO &&
- chl->mode & SILC_CHANNEL_UMODE_CHANFO) {
- SilcBuffer idp;
- unsigned char cumode[4];
-
- if (chl->client == client && chl->mode == mode) {
- notify_sent = TRUE;
- break;
+ if (client) {
+ /* Check that sender is on channel */
+ if (!silc_server_client_on_channel(client, channel, &chl))
+ goto out;
+
+ if (client != client2 && server->server_type == SILC_ROUTER) {
+ /* Sender must be operator */
+ if (!(chl->mode & SILC_CHANNEL_UMODE_CHANOP) &&
+ !(chl->mode & SILC_CHANNEL_UMODE_CHANFO)) {
+ SILC_LOG_DEBUG(("CUMODE change is not allowed"));
+ goto out;
}
- mode &= ~SILC_CHANNEL_UMODE_CHANFO;
- silc_server_send_notify_cumode(server, sock, FALSE, channel, mode,
- client->id, SILC_ID_CLIENT,
- client->id);
-
- idp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
- SILC_PUT32_MSB(mode, cumode);
- silc_server_send_notify_to_channel(server, sock, channel, FALSE,
- SILC_NOTIFY_TYPE_CUMODE_CHANGE,
- 3, idp->data, idp->len,
- cumode, 4,
- idp->data, idp->len);
- silc_buffer_free(idp);
- notify_sent = TRUE;
+ if (!silc_server_client_on_channel(client2, channel, &chl))
+ goto out;
- /* Force the mode change if we alredy set the mode */
- if (chl2) {
- chl2->mode = mode;
- silc_free(channel_id);
- silc_hash_table_list_reset(&htl);
+ /* If target is founder mode change is not allowed. */
+ if (chl->mode & SILC_CHANNEL_UMODE_CHANFO) {
+ SILC_LOG_DEBUG(("CUMODE change is not allowed"));
goto out;
}
}
-
- if (chl->client == client) {
- if (chl->mode == mode) {
+ }
+
+ /* Get target channel user entry */
+ if (!silc_server_client_on_channel(client2, channel, &chl))
+ goto out;
+
+ if (server->server_type == SILC_SERVER && chl->mode == mode) {
+ SILC_LOG_DEBUG(("Mode is changed already"));
+ break;
+ }
+
+ if (mode & SILC_CHANNEL_UMODE_CHANFO &&
+ !(chl->mode & SILC_CHANNEL_UMODE_CHANFO) &&
+ server->server_type == SILC_ROUTER &&
+ sock != SILC_PRIMARY_ROUTE(server)) {
+ SilcPublicKey founder_key = NULL;
+
+ /* If channel doesn't have founder auth mode then it's impossible
+ that someone would be getting founder rights with CUMODE command.
+ In that case there already either is founder or there isn't
+ founder at all on the channel. */
+ if (client && !(channel->mode & SILC_CHANNEL_MODE_FOUNDER_AUTH)) {
+ /* Force the mode to not have founder mode */
+ chl->mode = mode &= ~SILC_CHANNEL_UMODE_CHANFO;
+ silc_server_force_cumode_change(server, sock, channel, chl, mode);
+ notify_sent = TRUE;
+ break;
+ }
+
+ /* Get the founder of the channel and if found then this client
+ cannot be the founder since there already is one. */
+ silc_hash_table_list(channel->user_list, &htl);
+ while (silc_hash_table_get(&htl, NULL, (void *)&chl2))
+ if (chl2->mode & SILC_CHANNEL_UMODE_CHANFO) {
+ /* If the founder on the channel is not the one whom has set
+ the founder mode, then it's possible that this CUMODE_CHANGE
+ is correct. Due to netsplits it's possible that this
+ situation happens. */
+ if (!(channel->mode & SILC_CHANNEL_MODE_FOUNDER_AUTH) ||
+ (channel->founder_key && chl2->client->data.public_key &&
+ silc_pkcs_public_key_compare(
+ channel->founder_key,
+ chl2->client->data.public_key))) {
+ chl->mode = mode &= ~SILC_CHANNEL_UMODE_CHANFO;
+ silc_server_force_cumode_change(server, sock, channel,
+ chl, mode);
+ notify_sent = TRUE;
+ }
+ break;
+ }
+ silc_hash_table_list_reset(&htl);
+ if (!(mode & SILC_CHANNEL_UMODE_CHANFO))
+ break;
+
+ /* Founder not found of the channel. Since the founder auth mode
+ is set on the channel now check whether this is the client that
+ originally set the mode. */
+
+ if (channel->founder_key) {
+ /* Get public key that must be present in notify */
+ tmp = silc_argument_get_arg_type(args, 4, &tmp_len);
+ if (!tmp || !silc_pkcs_public_key_payload_decode(tmp, tmp_len,
+ &founder_key)) {
+ chl->mode = mode &= ~SILC_CHANNEL_UMODE_CHANFO;
+ silc_server_force_cumode_change(server, sock, channel, chl, mode);
notify_sent = TRUE;
break;
}
- SILC_LOG_DEBUG(("Changing the channel user mode"));
-
- /* Change the mode */
- chl->mode = mode;
- if (!(mode & SILC_CHANNEL_UMODE_CHANFO))
+ /* Now match the public key we have cached and public key sent.
+ They must match. */
+#if 0 /* The key may be other than the client's in 1.2 */
+ if (client && client->data.public_key &&
+ !silc_pkcs_public_key_compare(channel->founder_key,
+ client->data.public_key)) {
+ chl->mode = mode &= ~SILC_CHANNEL_UMODE_CHANFO;
+ silc_server_force_cumode_change(server, sock, channel, chl, mode);
+ notify_sent = TRUE;
break;
-
- chl2 = chl;
+ }
+#endif
+ if (!silc_pkcs_public_key_compare(channel->founder_key,
+ founder_key)) {
+ chl->mode = mode &= ~SILC_CHANNEL_UMODE_CHANFO;
+ silc_server_force_cumode_change(server, sock, channel, chl, mode);
+ notify_sent = TRUE;
+ break;
+ }
}
+
+ /* There cannot be anyone else as founder on the channel now. This
+ client is definitely the founder due to this authentication */
+ silc_hash_table_list(channel->user_list, &htl);
+ while (silc_hash_table_get(&htl, NULL, (void *)&chl2))
+ if (chl2->mode & SILC_CHANNEL_UMODE_CHANFO) {
+ chl2->mode &= ~SILC_CHANNEL_UMODE_CHANFO;
+ silc_server_force_cumode_change(server, NULL, channel, chl2,
+ chl2->mode);
+ break;
+ }
+ silc_hash_table_list_reset(&htl);
+
+ if (founder_key)
+ silc_pkcs_public_key_free(founder_key);
}
- silc_hash_table_list_reset(&htl);
-
+
+ if (server->server_type != SILC_SERVER && chl->mode == mode) {
+ SILC_LOG_DEBUG(("Mode is changed already"));
+ break;
+ }
+
+ SILC_LOG_DEBUG(("Changing %s channel user mode",
+ chl->client->nickname ? chl->client->nickname :
+ (unsigned char *)""));
+
+ /* Change the mode */
+ chl->mode = mode;
+
/* Send the same notify to the channel */
if (!notify_sent)
- silc_server_packet_send_to_channel(server, sock, channel,
- packet->type,
- FALSE, packet->buffer->data,
+ silc_server_packet_send_to_channel(server, NULL, channel,
+ packet->type,
+ FALSE, packet->buffer->data,
packet->buffer->len, FALSE);
silc_free(channel_id);
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;
channel = silc_idlist_find_channel_by_id(server->local_list,
channel_id, NULL);
if (!channel) {
+ SILC_LOG_DEBUG(("Notify for unknown channel"));
silc_free(channel_id);
goto out;
}
}
silc_free(channel_id);
- /* Get the added invite */
+ /* Get client ID */
tmp = silc_argument_get_arg_type(args, 3, &tmp_len);
- if (tmp) {
- if (!channel->invite_list)
- channel->invite_list = silc_calloc(tmp_len + 2,
- sizeof(*channel->invite_list));
- else
- channel->invite_list = silc_realloc(channel->invite_list,
- sizeof(*channel->invite_list) *
- (tmp_len +
- strlen(channel->invite_list) +
- 2));
- if (tmp[tmp_len - 1] == ',')
- tmp[tmp_len - 1] = '\0';
-
- strncat(channel->invite_list, tmp, tmp_len);
- strncat(channel->invite_list, ",", 1);
+ if (!tmp)
+ goto out;
+ client_id = silc_id_payload_parse_id(tmp, tmp_len, NULL);
+ if (!client_id)
+ goto out;
+
+ /* Get client entry */
+ client = silc_idlist_find_client_by_id(server->global_list,
+ client_id, TRUE, &cache);
+ if (!client) {
+ client = silc_idlist_find_client_by_id(server->local_list,
+ client_id, TRUE, &cache);
+ if (!client) {
+ silc_free(client_id);
+ goto out;
+ }
+ }
+ silc_free(client_id);
+
+ /* Get user's channel entry and check that inviting is allowed. */
+ if (!silc_server_client_on_channel(client, channel, &chl))
+ goto out;
+ if (channel->mode & SILC_CHANNEL_MODE_INVITE &&
+ !(chl->mode & SILC_CHANNEL_UMODE_CHANOP) &&
+ !(chl->mode & SILC_CHANNEL_UMODE_CHANFO)) {
+ SILC_LOG_DEBUG(("Inviting is not allowed"));
+ goto out;
}
- /* Get the deleted invite */
+ /* Get the invite action */
tmp = silc_argument_get_arg_type(args, 4, &tmp_len);
- if (tmp && channel->invite_list) {
- char *start, *end, *n;
-
- if (!strncmp(channel->invite_list, tmp,
- strlen(channel->invite_list) - 1)) {
- silc_free(channel->invite_list);
- channel->invite_list = NULL;
- } else {
- start = strstr(channel->invite_list, tmp);
- if (start && strlen(start) >= tmp_len) {
- end = start + tmp_len;
- n = silc_calloc(strlen(channel->invite_list) - tmp_len, sizeof(*n));
- strncat(n, channel->invite_list, start - channel->invite_list);
- strncat(n, end + 1, ((channel->invite_list +
- strlen(channel->invite_list)) - end) - 1);
- silc_free(channel->invite_list);
- channel->invite_list = n;
- }
- }
+ if (tmp && tmp_len == 1) {
+ SilcUInt8 action = (SilcUInt8)tmp[0];
+ SilcUInt16 iargc = 0;
+ SilcArgumentPayload iargs;
+
+ /* Get invite list */
+ tmp = silc_argument_get_arg_type(args, 5, &tmp_len);
+ if (!tmp || tmp_len < 2)
+ goto out;
+
+ /* Parse the arguments to see they are constructed correctly */
+ SILC_GET16_MSB(iargc, tmp);
+ iargs = silc_argument_payload_parse(tmp + 2, tmp_len - 2, iargc);
+ if (!iargs)
+ goto out;
+
+ if (action == 0 && !channel->invite_list)
+ channel->invite_list =
+ silc_hash_table_alloc(0, silc_hash_ptr,
+ NULL, NULL, NULL,
+ silc_server_inviteban_destruct, channel, TRUE);
+
+ /* Proces the invite action */
+ silc_server_inviteban_process(server, channel->invite_list, action,
+ iargs);
+ silc_argument_payload_free(iargs);
}
break;
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;
channel = silc_idlist_find_channel_by_id(server->global_list,
channel_id, NULL);
if (!channel) {
+ SILC_LOG_DEBUG(("Notify for unknown channel"));
silc_free(channel_id);
goto out;
}
tmp = silc_argument_get_arg_type(args, 2, &tmp_len);
if (!tmp)
goto out;
- channel_id2 = silc_id_payload_parse_id(tmp, tmp_len);
+ channel_id2 = silc_id_payload_parse_id(tmp, tmp_len, NULL);
if (!channel_id2)
goto out;
}
if (channel_id2) {
- SilcBuffer users = NULL, users_modes = NULL;
+ SilcBuffer modes = NULL, users = NULL, users_modes = NULL;
/* Re-announce this channel which ID was changed. */
silc_server_send_new_channel(server, sock, FALSE, channel->channel_name,
channel->mode);
/* Re-announce our clients on the channel as the ID has changed now */
- silc_server_announce_get_channel_users(server, channel, &users,
+ silc_server_announce_get_channel_users(server, channel, &modes, &users,
&users_modes);
if (users) {
silc_buffer_push(users, users->data - users->head);
users->data, users->len, FALSE);
silc_buffer_free(users);
}
+ if (modes) {
+ silc_buffer_push(modes, modes->data - modes->head);
+ silc_server_packet_send_dest(server, sock,
+ SILC_PACKET_NOTIFY, SILC_PACKET_FLAG_LIST,
+ channel->id, SILC_ID_CHANNEL,
+ modes->data, modes->len, FALSE);
+ silc_buffer_free(modes);
+ }
if (users_modes) {
silc_buffer_push(users_modes, users_modes->data - users_modes->head);
silc_server_packet_send_dest(server, sock,
silc_server_send_notify_topic_set(server, sock,
server->server_type == SILC_ROUTER ?
TRUE : FALSE, channel,
- channel->id, SILC_ID_CHANNEL,
+ server->id, SILC_ID_SERVER,
channel->topic);
}
}
tmp = silc_argument_get_arg_type(args, 1, &tmp_len);
if (!tmp)
goto out;
- server_id = silc_id_payload_parse_id(tmp, tmp_len);
+ server_id = silc_id_payload_parse_id(tmp, tmp_len, NULL);
if (!server_id)
goto out;
+ /* If the ID is mine, this notify is not allowed. */
+ if (SILC_ID_SERVER_COMPARE(server_id, server->id)) {
+ SILC_LOG_DEBUG(("Ignoring my own ID for SERVER_SIGNOFF"));
+ break;
+ }
+
/* Get server entry */
server_entry = silc_idlist_find_server_by_id(server->global_list,
server_id, TRUE, NULL);
- local = TRUE;
+ local = FALSE;
if (!server_entry) {
server_entry = silc_idlist_find_server_by_id(server->local_list,
server_id, TRUE, NULL);
tmp = silc_argument_get_arg_type(args, i + 1, &tmp_len);
if (!tmp)
continue;
- client_id = silc_id_payload_parse_id(tmp, tmp_len);
+ client_id = silc_id_payload_parse_id(tmp, tmp_len, NULL);
if (!client_id)
continue;
/* Update statistics */
server->stat.clients--;
- if (server->server_type == SILC_ROUTER)
+ if (server->stat.cell_clients)
server->stat.cell_clients--;
SILC_OPER_STATS_UPDATE(client, server, SILC_UMODE_SERVER_OPERATOR);
SILC_OPER_STATS_UPDATE(client, router, SILC_UMODE_ROUTER_OPERATOR);
/* Remove the client from all channels. */
silc_server_remove_from_channels(server, NULL, client,
- TRUE, NULL, FALSE);
+ TRUE, NULL, FALSE, FALSE);
+
+ /* Check if anyone is watching this nickname */
+ if (server->server_type == SILC_ROUTER)
+ silc_server_check_watcher_list(server, client, NULL,
+ SILC_NOTIFY_TYPE_SERVER_SIGNOFF);
+
+ /* Remove this client from watcher list if it is */
+ if (local)
+ silc_server_del_from_watcher_list(server, client);
/* Remove the client */
+ silc_idlist_del_data(client);
silc_idlist_del_client(local ? server->local_list :
server->global_list, client);
}
}
silc_free(server_id);
- /* Free all client entries that this server owns as they will
- become invalid now as well. */
- silc_server_remove_clients_by_server(server, server_entry, TRUE);
+ /* For local entrys SERVER_SIGNOFF is processed only on backup router.
+ It is possible that router sends server signoff for a server. If
+ backup router has it as local connection it will be closed. */
+ if (SILC_IS_LOCAL(server_entry)) {
+ if (server->server_type == SILC_BACKUP_ROUTER) {
+ sock = server_entry->connection;
+ SILC_LOG_DEBUG(("Closing connection %s after SERVER_SIGNOFF",
+ sock->hostname));
+ SILC_SET_DISCONNECTING(sock);
+ if (sock->user_data)
+ silc_server_free_sock_user_data(server, sock, NULL);
+ silc_server_close_connection(server, sock);
+ }
+
+ break;
+ }
+
+ /* Remove all servers that are originated from this server, and
+ remove the clients of those servers too. */
+ silc_server_remove_servers_by_server(server, server_entry, TRUE);
+
+ /* Remove the clients that this server owns as they will become
+ invalid now too. */
+ silc_server_remove_clients_by_server(server, server_entry->router,
+ server_entry, TRUE);
+ silc_server_backup_del(server, server_entry);
/* Remove the server entry */
silc_idlist_del_server(local ? server->local_list :
server->global_list, server_entry);
- /* XXX update statistics */
+ /* Update statistics */
+ if (server->server_type == SILC_ROUTER)
+ server->stat.servers--;
break;
channel = silc_idlist_find_channel_by_id(server->local_list,
channel_id, NULL);
if (!channel) {
+ SILC_LOG_DEBUG(("Notify for unknown channel"));
silc_free(channel_id);
goto out;
}
tmp = silc_argument_get_arg_type(args, 1, &tmp_len);
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;
goto out;
}
}
+ silc_free(client_id);
+
+ /* If target is founder they cannot be kicked */
+ if (!silc_server_client_on_channel(client, channel, &chl))
+ goto out;
+ if (chl->mode & SILC_CHANNEL_UMODE_CHANFO)
+ goto out;
+
+ /* Get the kicker's Client ID */
+ tmp = silc_argument_get_arg_type(args, 3, &tmp_len);
+ if (!tmp)
+ goto out;
+ client_id = silc_id_payload_parse_id(tmp, tmp_len, NULL);
+ if (!client_id)
+ goto out;
+
+ /* If the the client is not in local list we check global list */
+ client2 = silc_idlist_find_client_by_id(server->global_list,
+ client_id, TRUE, NULL);
+ if (!client2) {
+ client2 = silc_idlist_find_client_by_id(server->local_list,
+ client_id, TRUE, NULL);
+ if (!client2) {
+ silc_free(client_id);
+ goto out;
+ }
+ }
+ silc_free(client_id);
+
+ /* Kicker must be operator on channel */
+ if (!silc_server_client_on_channel(client2, channel, &chl))
+ goto out;
+ if (!(chl->mode & SILC_CHANNEL_UMODE_CHANOP) &&
+ !(chl->mode & SILC_CHANNEL_UMODE_CHANFO)) {
+ SILC_LOG_DEBUG(("Kicking is not allowed"));
+ goto out;
+ }
/* Send to channel */
silc_server_packet_send_to_channel(server, sock, channel, packet->type,
FALSE, packet->buffer->data,
packet->buffer->len, FALSE);
+ /* Remove the client from channel's invite list */
+ if (channel->invite_list && silc_hash_table_count(channel->invite_list)) {
+ SilcBuffer ab;
+ SilcArgumentPayload iargs;
+ tmp = silc_argument_get_arg_type(args, 1, &tmp_len);
+ ab = silc_argument_payload_encode_one(NULL, tmp, tmp_len, 3);
+ iargs = silc_argument_payload_parse(ab->data, ab->len, 1);
+ silc_server_inviteban_process(server, channel->invite_list, 1, iargs);
+ silc_buffer_free(ab);
+ silc_argument_payload_free(iargs);
+ }
+
/* Remove the client from channel */
silc_server_remove_from_one_channel(server, sock, channel, client, FALSE);
/*
* Distribute the notify to local clients on channels
*/
- unsigned char *id;
- SilcUInt32 id_len;
+ unsigned char *id, *comment;
+ SilcUInt32 id_len, comment_len;
SILC_LOG_DEBUG(("KILLED notify"));
id = silc_argument_get_arg_type(args, 1, &id_len);
if (!id)
goto out;
- client_id = silc_id_payload_parse_id(id, id_len);
+ client_id = silc_id_payload_parse_id(id, id_len, NULL);
if (!client_id)
goto out;
/* If the the client is not in local list we check global list */
client = silc_idlist_find_client_by_id(server->global_list,
- client_id, TRUE, NULL);
+ client_id, TRUE, &cache);
if (!client) {
client = silc_idlist_find_client_by_id(server->local_list,
- client_id, TRUE, NULL);
+ client_id, TRUE, &cache);
if (!client) {
silc_free(client_id);
goto out;
}
/* Get comment */
- tmp = silc_argument_get_arg_type(args, 2, &tmp_len);
- if (tmp_len > 128)
- tmp = NULL;
+ comment = silc_argument_get_arg_type(args, 2, &comment_len);
+ if (comment_len > 128)
+ comment_len = 127;
+
+ /* Get the killer's Client ID */
+ tmp = silc_argument_get_arg_type(args, 3, &tmp_len);
+ if (!tmp)
+ goto out;
+ client_id = silc_id_payload_parse_id(tmp, tmp_len, &id_type);
+ if (!client_id)
+ goto out;
+
+ if (id_type == SILC_ID_CLIENT) {
+ /* If the the client is not in local list we check global list */
+ client2 = silc_idlist_find_client_by_id(server->global_list,
+ client_id, TRUE, NULL);
+ if (!client2) {
+ client2 = silc_idlist_find_client_by_id(server->local_list,
+ client_id, TRUE, NULL);
+ if (!client2) {
+ silc_free(client_id);
+ goto out;
+ }
+ }
+ silc_free(client_id);
+
+ /* Killer must be router operator */
+ if (server->server_type != SILC_SERVER &&
+ !(client2->mode & SILC_UMODE_ROUTER_OPERATOR)) {
+ SILC_LOG_DEBUG(("Killing is not allowed"));
+ goto out;
+ }
+ }
/* Send the notify to local clients on the channels except to the
client who is killed. */
silc_server_send_notify_on_channels(server, client, client,
- SILC_NOTIFY_TYPE_KILLED,
- tmp ? 2 : 1,
- id, id_len,
+ SILC_NOTIFY_TYPE_KILLED, 3,
+ id, id_len, comment, comment_len,
tmp, tmp_len);
/* Remove the client from all channels */
silc_server_remove_from_channels(server, NULL, client, FALSE, NULL,
- FALSE);
+ FALSE, TRUE);
+
+ /* Check if anyone is watching this nickname */
+ silc_server_check_watcher_list(server, client, NULL,
+ SILC_NOTIFY_TYPE_KILLED);
+
+ /* Update statistics */
+ server->stat.clients--;
+ if (server->stat.cell_clients)
+ server->stat.cell_clients--;
+ SILC_OPER_STATS_UPDATE(client, server, SILC_UMODE_SERVER_OPERATOR);
+ SILC_OPER_STATS_UPDATE(client, router, SILC_UMODE_ROUTER_OPERATOR);
+
+ if (SILC_IS_LOCAL(client)) {
+ server->stat.my_clients--;
+ silc_schedule_task_del_by_context(server->schedule, client);
+ silc_idlist_del_data(client);
+ client->mode = 0;
+ }
+ client->data.status &= ~SILC_IDLIST_STATUS_REGISTERED;
+ cache->expire = SILC_ID_CACHE_EXPIRE_DEF;
break;
}
tmp = silc_argument_get_arg_type(args, 1, &tmp_len);
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;
goto out;
SILC_GET32_MSB(mode, tmp);
-#define SILC_UMODE_STATS_UPDATE(oper, mod) \
-do { \
- if (client->mode & (mod)) { \
- if (!(mode & (mod))) { \
- if (client->connection) \
- server->stat.my_ ## oper ## _ops--; \
- if (server->server_type == SILC_ROUTER) \
- server->stat. oper ## _ops--; \
- } \
- } else { \
- if (mode & (mod)) { \
- if (client->connection) \
- server->stat.my_ ## oper ## _ops++; \
- if (server->server_type == SILC_ROUTER) \
- server->stat. oper ## _ops++; \
- } \
- } \
-} while(0)
+ /* Remove internal resumed flag if client is marked detached now */
+ if (mode & SILC_UMODE_DETACHED)
+ client->data.status &= ~SILC_IDLIST_STATUS_RESUMED;
/* Update statistics */
+ if (server->server_type == SILC_ROUTER) {
+ if (mode & SILC_UMODE_GONE) {
+ if (!(client->mode & SILC_UMODE_GONE))
+ server->stat.aways++;
+ } else {
+ if (client->mode & SILC_UMODE_GONE)
+ server->stat.aways--;
+ }
+ if (mode & SILC_UMODE_DETACHED) {
+ if (!(client->mode & SILC_UMODE_DETACHED))
+ server->stat.detached++;
+ } else {
+ if (client->mode & SILC_UMODE_DETACHED)
+ server->stat.detached--;
+ }
+ }
SILC_UMODE_STATS_UPDATE(server, SILC_UMODE_SERVER_OPERATOR);
SILC_UMODE_STATS_UPDATE(router, SILC_UMODE_ROUTER_OPERATOR);
- /* Save the mode */
+ /* Change the mode */
client->mode = mode;
+ /* Check if anyone is watching this nickname */
+ if (server->server_type == SILC_ROUTER)
+ silc_server_check_watcher_list(server, client, NULL,
+ SILC_NOTIFY_TYPE_UMODE_CHANGE);
+
break;
case SILC_NOTIFY_TYPE_BAN:
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;
channel = silc_idlist_find_channel_by_id(server->local_list,
channel_id, NULL);
if (!channel) {
+ SILC_LOG_DEBUG(("Notify for unknown channel"));
silc_free(channel_id);
goto out;
}
}
silc_free(channel_id);
- /* Get the new ban and add it to the ban list */
+ /* Get the ban action */
tmp = silc_argument_get_arg_type(args, 2, &tmp_len);
- if (tmp) {
- if (!channel->ban_list)
- channel->ban_list = silc_calloc(tmp_len + 2,
- sizeof(*channel->ban_list));
- else
- channel->ban_list = silc_realloc(channel->ban_list,
- sizeof(*channel->ban_list) *
- (tmp_len +
- strlen(channel->ban_list) + 2));
- strncat(channel->ban_list, tmp, tmp_len);
- strncat(channel->ban_list, ",", 1);
+ if (tmp && tmp_len == 1) {
+ SilcUInt8 action = (SilcUInt8)tmp[0];
+ SilcUInt16 iargc = 0;
+ SilcArgumentPayload iargs;
+
+ /* Get ban list */
+ tmp = silc_argument_get_arg_type(args, 3, &tmp_len);
+ if (!tmp || tmp_len < 2)
+ goto out;
+
+ /* Parse the arguments to see they are constructed correctly */
+ SILC_GET16_MSB(iargc, tmp);
+ iargs = silc_argument_payload_parse(tmp + 2, tmp_len - 2, iargc);
+ if (!iargs)
+ goto out;
+
+ if (action == 0 && !channel->ban_list)
+ channel->ban_list =
+ silc_hash_table_alloc(0, silc_hash_ptr,
+ NULL, NULL, NULL,
+ silc_server_inviteban_destruct, channel, TRUE);
+
+ /* Proces the ban action */
+ silc_server_inviteban_process(server, channel->ban_list, action,
+ iargs);
+ silc_argument_payload_free(iargs);
}
+ break;
- /* Get the ban to be removed and remove it from the list */
- tmp = silc_argument_get_arg_type(args, 3, &tmp_len);
- if (tmp && channel->ban_list) {
- char *start, *end, *n;
-
- if (!strncmp(channel->ban_list, tmp, strlen(channel->ban_list) - 1)) {
- silc_free(channel->ban_list);
- channel->ban_list = NULL;
- } else {
- start = strstr(channel->ban_list, tmp);
- if (start && strlen(start) >= tmp_len) {
- end = start + tmp_len;
- n = silc_calloc(strlen(channel->ban_list) - tmp_len, sizeof(*n));
- strncat(n, channel->ban_list, start - channel->ban_list);
- strncat(n, end + 1, ((channel->ban_list +
- strlen(channel->ban_list)) - end) - 1);
- silc_free(channel->ban_list);
- channel->ban_list = n;
+ case SILC_NOTIFY_TYPE_ERROR:
+ {
+ /*
+ * Error notify
+ */
+ 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(("ERROR notify (%d)", error));
+
+ if (error == SILC_STATUS_ERR_NO_SUCH_CLIENT_ID &&
+ sock->type == SILC_SOCKET_TYPE_ROUTER) {
+ tmp = silc_argument_get_arg_type(args, 2, &tmp_len);
+ if (tmp) {
+ SILC_LOG_DEBUG(("Received invalid client ID notification, deleting "
+ "the entry from cache"));
+ client_id = silc_id_payload_parse_id(tmp, tmp_len, NULL);
+ if (!client_id)
+ goto out;
+ client = silc_idlist_find_client_by_id(server->global_list,
+ client_id, FALSE, NULL);
+ if (client) {
+ silc_server_remove_from_channels(server, NULL, client, TRUE,
+ NULL, TRUE, FALSE);
+ silc_idlist_del_data(client);
+ silc_idlist_del_client(server->global_list, client);
+ }
+ silc_free(client_id);
}
}
}
{
SilcSocketConnection dst_sock;
SilcIDListData idata;
+ SilcClientEntry client;
SILC_LOG_DEBUG(("Start"));
/* Get the route to the client */
dst_sock = silc_server_get_client_route(server, packet->dst_id,
- packet->dst_id_len, NULL, &idata);
+ packet->dst_id_len, NULL,
+ &idata, &client);
if (!dst_sock) {
- /* Send IDENTIFY command reply with error status to indicate that
- such destination ID does not exist or is invalid */
- SilcBuffer idp = silc_id_payload_encode_data(packet->dst_id,
- packet->dst_id_len,
- packet->dst_id_type);
+ SilcBuffer idp;
+ unsigned char error;
+
+ if (client && client->mode & SILC_UMODE_DETACHED) {
+ SILC_LOG_DEBUG(("Client is detached, discarding packet"));
+ return;
+ }
+
+ /* Send SILC_NOTIFY_TYPE_ERROR to indicate that such destination ID
+ does not exist or is invalid. */
+ idp = silc_id_payload_encode_data(packet->dst_id,
+ packet->dst_id_len,
+ packet->dst_id_type);
if (!idp)
return;
+ error = SILC_STATUS_ERR_NO_SUCH_CLIENT_ID;
if (packet->src_id_type == SILC_ID_CLIENT) {
SilcClientID *client_id = silc_id_str2id(packet->src_id,
packet->src_id_len,
packet->src_id_type);
- silc_server_send_dest_command_reply(server, sock,
- client_id, SILC_ID_CLIENT,
- SILC_COMMAND_IDENTIFY,
- SILC_STATUS_ERR_NO_SUCH_CLIENT_ID,
- 0, 1, 2, idp->data, idp->len);
+ silc_server_send_notify_dest(server, sock, FALSE,
+ client_id, SILC_ID_CLIENT,
+ SILC_NOTIFY_TYPE_ERROR, 2,
+ &error, 1,
+ idp->data, idp->len);
silc_free(client_id);
} else {
- silc_server_send_command_reply(server, sock, SILC_COMMAND_IDENTIFY,
- SILC_STATUS_ERR_NO_SUCH_CLIENT_ID,
- 0, 1, 2, idp->data, idp->len);
+ silc_server_send_notify(server, sock, FALSE,
+ SILC_NOTIFY_TYPE_ERROR, 2,
+ &error, 1,
+ idp->data, idp->len);
}
silc_buffer_free(idp);
return;
}
+ /* Check whether destination client wishes to receive private messages */
+ if (client && !(packet->flags & SILC_PACKET_FLAG_PRIVMSG_KEY) &&
+ client->mode & SILC_UMODE_BLOCK_PRIVMSG) {
+ SILC_LOG_DEBUG(("Client blocks private messages, discarding packet"));
+ return;
+ }
+
/* Send the private message */
silc_server_send_private_message(server, dst_sock, idata->send_key,
idata->hmac_send, idata->psn_send++,
/* Get the route to the client */
dst_sock = silc_server_get_client_route(server, packet->dst_id,
- packet->dst_id_len, NULL, &idata);
+ packet->dst_id_len, NULL,
+ &idata, NULL);
if (!dst_sock)
return;
SILC_LOG_DEBUG(("Start"));
- /* Source must be server or router */
- if (packet->src_id_type != SILC_ID_SERVER &&
- sock->type != SILC_SOCKET_TYPE_ROUTER)
- return;
-
if (packet->dst_id_type == SILC_ID_CHANNEL)
return;
{
SilcChannelEntry channel = NULL;
SilcChannelID *id = NULL;
- void *sender = NULL;
- void *sender_entry = NULL;
+ void *sender_id = NULL;
+ SilcClientEntry sender_entry = NULL;
+ SilcChannelClientEntry chl;
bool local = TRUE;
SILC_LOG_DEBUG(("Processing channel message"));
if (!channel) {
channel = silc_idlist_find_channel_by_id(server->global_list, id, NULL);
if (!channel) {
- SILC_LOG_DEBUG(("Could not find channel"));
+ SilcBuffer idp;
+ unsigned char error;
+
+ /* Send SILC_NOTIFY_TYPE_ERROR to indicate that such destination ID
+ does not exist or is invalid. */
+ idp = silc_id_payload_encode_data(packet->dst_id,
+ packet->dst_id_len,
+ packet->dst_id_type);
+ if (!idp)
+ goto out;
+
+ error = SILC_STATUS_ERR_NO_SUCH_CHANNEL_ID;
+ if (packet->src_id_type == SILC_ID_CLIENT) {
+ SilcClientID *client_id = silc_id_str2id(packet->src_id,
+ packet->src_id_len,
+ packet->src_id_type);
+ silc_server_send_notify_dest(server, sock, FALSE,
+ client_id, SILC_ID_CLIENT,
+ SILC_NOTIFY_TYPE_ERROR, 2,
+ &error, 1, idp->data, idp->len);
+ silc_free(client_id);
+ } else {
+ silc_server_send_notify(server, sock, FALSE,
+ SILC_NOTIFY_TYPE_ERROR, 2,
+ &error, 1, idp->data, idp->len);
+ }
+
+ silc_buffer_free(idp);
goto out;
}
}
/* See that this client is on the channel. If the original sender is
not client (as it can be server as well) we don't do the check. */
- sender = silc_id_str2id(packet->src_id, packet->src_id_len,
- packet->src_id_type);
- if (!sender)
+ sender_id = silc_id_str2id(packet->src_id, packet->src_id_len,
+ packet->src_id_type);
+ if (!sender_id)
goto out;
if (packet->src_id_type == SILC_ID_CLIENT) {
sender_entry = silc_idlist_find_client_by_id(server->local_list,
- sender, TRUE, NULL);
+ sender_id, TRUE, NULL);
if (!sender_entry) {
local = FALSE;
sender_entry = silc_idlist_find_client_by_id(server->global_list,
- sender, TRUE, NULL);
+ sender_id, TRUE, NULL);
}
if (!sender_entry || !silc_server_client_on_channel(sender_entry,
- channel)) {
+ channel, &chl)) {
SILC_LOG_DEBUG(("Client not on channel"));
goto out;
}
- /* If the packet is coming from router, but the client entry is
- local entry to us then some router is rerouting this to us and it is
- not allowed. */
+ /* If channel is moderated check that client is allowed to send
+ messages. */
+ if (channel->mode & SILC_CHANNEL_MODE_SILENCE_USERS &&
+ !(chl->mode & SILC_CHANNEL_UMODE_CHANOP) &&
+ !(chl->mode & SILC_CHANNEL_UMODE_CHANFO)) {
+ SILC_LOG_DEBUG(("Channel is silenced from normal users"));
+ goto out;
+ }
+ if (channel->mode & SILC_CHANNEL_MODE_SILENCE_OPERS &&
+ chl->mode & SILC_CHANNEL_UMODE_CHANOP &&
+ !(chl->mode & SILC_CHANNEL_UMODE_CHANFO)) {
+ SILC_LOG_DEBUG(("Channel is silenced from operators"));
+ goto out;
+ }
+ if (chl->mode & SILC_CHANNEL_UMODE_QUIET) {
+ SILC_LOG_DEBUG(("Sender is quieted on the channel"));
+ goto out;
+ }
+
+ /* If the packet is coming from router, but the client entry is local
+ entry to us then some router is rerouting this to us and it is not
+ allowed. When the client is local to us it means that we've routed
+ this packet to network, and now someone is routing it back to us. */
if (server->server_type == SILC_ROUTER &&
sock->type == SILC_SOCKET_TYPE_ROUTER && local) {
SILC_LOG_DEBUG(("Channel message rerouted to the sender, drop it"));
/* Distribute the packet to our local clients. This will send the
packet for further routing as well, if needed. */
- silc_server_packet_relay_to_channel(server, sock, channel, sender,
+ silc_server_packet_relay_to_channel(server, sock, channel, sender_id,
packet->src_id_type, sender_entry,
packet->buffer->data,
packet->buffer->len, FALSE);
out:
- if (sender)
- silc_free(sender);
- if (id)
- silc_free(id);
+ silc_free(sender_id);
+ silc_free(id);
}
/* Received channel key packet. We distribute the key to all of our locally
SilcChannelEntry channel;
if (packet->src_id_type != SILC_ID_SERVER ||
- (server->server_type == SILC_ROUTER &&
+ (server->server_type == SILC_ROUTER && !server->backup_router &&
sock->type == SILC_SOCKET_TYPE_ROUTER))
return;
/* Save the channel key */
channel = silc_server_save_channel_key(server, buffer, NULL);
- if (!channel)
+ if (!channel) {
+ SILC_LOG_ERROR(("Bad channel key from %s (%s)",
+ sock->hostname, sock->ip));
return;
-
+ }
+
/* Distribute the key to everybody who is on the channel. If we are router
we will also send it to locally connected servers. */
silc_server_send_channel_key(server, sock, channel, FALSE);
if (server->server_type != SILC_BACKUP_ROUTER) {
/* Distribute to local cell backup routers. */
- silc_server_backup_send(server, (SilcServerEntry)sock->user_data,
+ silc_server_backup_send(server, sock->user_data,
SILC_PACKET_CHANNEL_KEY, 0,
buffer->data, buffer->len, FALSE, TRUE);
}
SilcBuffer buffer = packet->buffer;
SilcClientEntry client;
SilcClientID *client_id;
- SilcBuffer reply;
SilcIDListData idata;
- char *username = NULL, *realname = NULL, *id_string;
+ char *username = NULL, *realname = NULL;
SilcUInt16 username_len;
SilcUInt32 id_len;
int ret;
/* Remove the old cache entry. */
if (!silc_idcache_del_by_context(server->local_list->clients, client)) {
SILC_LOG_INFO(("Unauthenticated client attempted to register to network"));
- silc_server_disconnect_remote(server, sock, "Server closed connection: "
- "You have not been authenticated");
+ silc_server_disconnect_remote(server, sock,
+ SILC_STATUS_ERR_NOT_AUTHENTICATED, NULL);
+ if (sock->user_data)
+ silc_server_free_sock_user_data(server, sock, NULL);
return NULL;
}
silc_free(realname);
SILC_LOG_ERROR(("Client %s (%s) sent incomplete information, closing "
"connection", sock->hostname, sock->ip));
- silc_server_disconnect_remote(server, sock, "Server closed connection: "
- "Incomplete client information");
+ silc_server_disconnect_remote(server, sock,
+ SILC_STATUS_ERR_INCOMPLETE_INFORMATION,
+ NULL);
+ if (sock->user_data)
+ silc_server_free_sock_user_data(server, sock, NULL);
return NULL;
}
silc_free(realname);
SILC_LOG_ERROR(("Client %s (%s) did not send its username, closing "
"connection", sock->hostname, sock->ip));
- silc_server_disconnect_remote(server, sock, "Server closed connection: "
- "Incomplete client information");
+ silc_server_disconnect_remote(server, sock,
+ SILC_STATUS_ERR_INCOMPLETE_INFORMATION,
+ NULL);
+ if (sock->user_data)
+ silc_server_free_sock_user_data(server, sock, NULL);
return NULL;
}
SILC_LOG_ERROR(("Client %s (%s) sent incomplete information, closing "
"connection", sock->hostname, sock->ip));
silc_server_disconnect_remote(server, sock,
- "Server closed connection: "
- "Incomplete client information");
+ SILC_STATUS_ERR_INCOMPLETE_INFORMATION,
+ NULL);
+ if (sock->user_data)
+ silc_server_free_sock_user_data(server, sock, NULL);
return NULL;
}
SILC_LOG_ERROR(("Client %s (%s) sent incomplete information, closing "
"connection", sock->hostname, sock->ip));
silc_server_disconnect_remote(server, sock,
- "Server closed connection: "
- "Incomplete client information");
+ SILC_STATUS_ERR_INCOMPLETE_INFORMATION,
+ NULL);
+ if (sock->user_data)
+ silc_server_free_sock_user_data(server, sock, NULL);
return NULL;
}
while (!silc_id_create_client_id(server, server->id, server->rng,
server->md5hash, nickname, &client_id)) {
nickfail++;
+ if (nickfail > 9) {
+ silc_server_disconnect_remote(server, sock,
+ SILC_STATUS_ERR_BAD_NICKNAME, NULL);
+ if (sock->user_data)
+ silc_server_free_sock_user_data(server, sock, NULL);
+ return NULL;
+ }
snprintf(&nickname[strlen(nickname) - 1], 1, "%d", nickfail);
}
+ /* If client marked as anonymous, scramble the username and hostname */
+ if (client->mode & SILC_UMODE_ANONYMOUS) {
+ char *scramble;
+
+ if (strlen(username) >= 2) {
+ username[0] = silc_rng_get_byte_fast(server->rng);
+ username[1] = silc_rng_get_byte_fast(server->rng);
+ }
+
+ scramble = silc_hash_babbleprint(server->sha1hash, username,
+ strlen(username));
+ scramble[5] = '@';
+ scramble[11] = '.';
+ memcpy(&scramble[16], ".silc", 5);
+ scramble[21] = '\0';
+ silc_free(username);
+ username = scramble;
+ }
+
/* Update client entry */
idata->status |= SILC_IDLIST_STATUS_REGISTERED;
client->nickname = nickname;
client->username = username;
- client->userinfo = realname ? realname : strdup(" ");
+ client->userinfo = realname ? realname : strdup(username);
client->id = client_id;
id_len = silc_id_get_len(client_id, SILC_ID_CLIENT);
client_id, client, 0, NULL);
/* Notify our router about new client on the SILC network */
- if (!server->standalone)
- silc_server_send_new_id(server, (SilcSocketConnection)
- server->router->connection,
- server->server_type == SILC_ROUTER ? TRUE : FALSE,
- client->id, SILC_ID_CLIENT, id_len);
-
- /* Send the new client ID to the client. */
- id_string = silc_id_id2str(client->id, SILC_ID_CLIENT);
- reply = silc_buffer_alloc(2 + 2 + id_len);
- silc_buffer_pull_tail(reply, SILC_BUFFER_END(reply));
- silc_buffer_format(reply,
- SILC_STR_UI_SHORT(SILC_ID_CLIENT),
- SILC_STR_UI_SHORT(id_len),
- SILC_STR_UI_XNSTRING(id_string, id_len),
- SILC_STR_END);
- silc_server_packet_send(server, sock, SILC_PACKET_NEW_ID, 0,
- reply->data, reply->len, FALSE);
- silc_free(id_string);
- silc_buffer_free(reply);
+ silc_server_send_new_id(server, SILC_PRIMARY_ROUTE(server),
+ SILC_BROADCAST(server), client->id,
+ SILC_ID_CLIENT, id_len);
- /* Send some nice info to the client */
- SILC_SERVER_SEND_NOTIFY(server, sock, SILC_NOTIFY_TYPE_NONE,
- ("Welcome to the SILC Network %s",
- username));
- SILC_SERVER_SEND_NOTIFY(server, sock, SILC_NOTIFY_TYPE_NONE,
- ("Your host is %s, running version %s",
- server->config->server_info->server_name,
- server_version));
+ /* Distribute to backup routers */
if (server->server_type == SILC_ROUTER) {
- SILC_SERVER_SEND_NOTIFY(server, sock, SILC_NOTIFY_TYPE_NONE,
- ("There are %d clients on %d servers in SILC "
- "Network", server->stat.clients,
- server->stat.servers + 1));
- SILC_SERVER_SEND_NOTIFY(server, sock, SILC_NOTIFY_TYPE_NONE,
- ("There are %d clients on %d server in our cell",
- server->stat.cell_clients,
- server->stat.cell_servers + 1));
- SILC_SERVER_SEND_NOTIFY(server, sock, SILC_NOTIFY_TYPE_NONE,
- ("I have %d clients, %d channels, %d servers and "
- "%d routers",
- server->stat.my_clients,
- server->stat.my_channels,
- server->stat.my_servers,
- server->stat.my_routers));
- SILC_SERVER_SEND_NOTIFY(server, sock, SILC_NOTIFY_TYPE_NONE,
- ("There are %d server operators and %d router "
- "operators online",
- server->stat.server_ops,
- server->stat.router_ops));
- SILC_SERVER_SEND_NOTIFY(server, sock, SILC_NOTIFY_TYPE_NONE,
- ("I have %d operators online",
- server->stat.my_router_ops +
- server->stat.my_server_ops));
- } else {
- SILC_SERVER_SEND_NOTIFY(server, sock, SILC_NOTIFY_TYPE_NONE,
- ("I have %d clients and %d channels formed",
- server->stat.my_clients,
- server->stat.my_channels));
- SILC_SERVER_SEND_NOTIFY(server, sock, SILC_NOTIFY_TYPE_NONE,
- ("%d operators online",
- server->stat.my_server_ops));
+ SilcBuffer idp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
+ silc_server_backup_send(server, sock->user_data, SILC_PACKET_NEW_ID, 0,
+ idp->data, idp->len, FALSE, TRUE);
+ silc_buffer_free(idp);
}
- SILC_SERVER_SEND_NOTIFY(server, sock, SILC_NOTIFY_TYPE_NONE,
- ("Your connection is secured with %s cipher, "
- "key length %d bits",
- idata->send_key->cipher->name,
- idata->send_key->cipher->key_len));
- SILC_SERVER_SEND_NOTIFY(server, sock, SILC_NOTIFY_TYPE_NONE,
- ("Your current nickname is %s",
- client->nickname));
-
- /* Send motd */
- silc_server_send_motd(server, sock);
+
+ /* Send the new client ID to the client. */
+ silc_server_send_new_id(server, sock, FALSE, client->id, SILC_ID_CLIENT,
+ silc_id_get_len(client->id, SILC_ID_CLIENT));
+
+ /* Send some nice info to the client */
+ silc_server_send_connect_notifys(server, sock, client);
+
+ /* Check if anyone is watching this nickname */
+ if (server->server_type == SILC_ROUTER)
+ silc_server_check_watcher_list(server, client, NULL, 0);
return client;
}
SILC_LOG_INFO(("Unauthenticated %s attempted to register to "
"network", (sock->type == SILC_SOCKET_TYPE_SERVER ?
"server" : "router")));
- silc_server_disconnect_remote(server, sock, "Server closed connection: "
- "You have not been authenticated");
+ silc_server_disconnect_remote(server, sock,
+ SILC_STATUS_ERR_NOT_AUTHENTICATED, NULL);
+ if (sock->user_data)
+ silc_server_free_sock_user_data(server, sock, NULL);
return NULL;
}
local = FALSE;
&name_len),
SILC_STR_END);
if (ret == -1) {
- if (id_string)
- silc_free(id_string);
- if (server_name)
- silc_free(server_name);
+ silc_free(id_string);
+ silc_free(server_name);
+ silc_server_disconnect_remote(server, sock,
+ SILC_STATUS_ERR_INCOMPLETE_INFORMATION,
+ NULL);
+ if (sock->user_data)
+ silc_server_free_sock_user_data(server, sock, NULL);
return NULL;
}
if (id_len > buffer->len) {
silc_free(id_string);
silc_free(server_name);
+ silc_server_disconnect_remote(server, sock,
+ SILC_STATUS_ERR_INCOMPLETE_INFORMATION,
+ NULL);
+ if (sock->user_data)
+ silc_server_free_sock_user_data(server, sock, NULL);
return NULL;
}
if (!server_id) {
silc_free(id_string);
silc_free(server_name);
+ silc_server_disconnect_remote(server, sock,
+ SILC_STATUS_ERR_INCOMPLETE_INFORMATION,
+ NULL);
+ if (sock->user_data)
+ silc_server_free_sock_user_data(server, sock, NULL);
return NULL;
}
silc_free(id_string);
if (!silc_id_is_valid_server_id(server, server_id, sock)) {
SILC_LOG_INFO(("Invalid server ID sent by %s (%s)",
sock->ip, sock->hostname));
- silc_server_disconnect_remote(server, sock, "Server closed connection: "
- "Your Server ID is not valid");
+ silc_server_disconnect_remote(server, sock,
+ SILC_STATUS_ERR_BAD_SERVER_ID, NULL);
+ if (sock->user_data)
+ silc_server_free_sock_user_data(server, sock, NULL);
silc_free(server_name);
return NULL;
}
to our router. If we are normal server we won't send anything
since this connection must be our router connection. */
if (server->server_type == SILC_ROUTER && !server->standalone &&
- server->router->connection != sock)
- silc_server_send_new_id(server, server->router->connection,
+ SILC_PRIMARY_ROUTE(server) != sock)
+ silc_server_send_new_id(server, SILC_PRIMARY_ROUTE(server),
TRUE, new_server->id, SILC_ID_SERVER,
silc_id_get_len(server_id, SILC_ID_SERVER));
- if (server->server_type == SILC_ROUTER)
+ if (server->server_type == SILC_ROUTER) {
+ /* Distribute to backup routers */
+ SilcBuffer idp = silc_id_payload_encode(new_server->id, SILC_ID_SERVER);
+ silc_server_backup_send(server, sock->user_data, SILC_PACKET_NEW_ID, 0,
+ idp->data, idp->len, FALSE, TRUE);
+ silc_buffer_free(idp);
+
+ /* Statistics */
server->stat.cell_servers++;
+ }
/* Check whether this router connection has been replaced by an
backup router. If it has been then we'll disable the server and will
silc_server_announce_clients(server, 0, sock);
silc_server_announce_channels(server, 0, sock);
}
+
+ /* Announce our information to backup router */
+ if (new_server->server_type == SILC_BACKUP_ROUTER &&
+ sock->type == SILC_SOCKET_TYPE_SERVER &&
+ server->server_type == SILC_ROUTER) {
+ silc_server_announce_servers(server, TRUE, 0, sock);
+ silc_server_announce_clients(server, 0, sock);
+ silc_server_announce_channels(server, 0, sock);
+ }
+
+ /* If backup router, mark it as one of ours. This server is considered
+ to be backup router after this setting. */
+ if (new_server->server_type == SILC_BACKUP_ROUTER) {
+ SilcServerConfigRouter *backup;
+ backup = silc_server_config_find_backup_conn(server, sock->ip);
+ if (!backup)
+ backup = silc_server_config_find_backup_conn(server, sock->hostname);
+ if (backup) {
+ /* Add as our backup router */
+ silc_server_backup_add(server, new_server, backup->backup_replace_ip,
+ backup->backup_replace_port,
+ backup->backup_local);
+ }
+ }
+
+ /* By default the servers connected to backup router are disabled
+ until backup router has become the primary */
+ if (server->server_type == SILC_BACKUP_ROUTER &&
+ sock->type == SILC_SOCKET_TYPE_SERVER)
+ idata->status |= SILC_IDLIST_STATUS_DISABLED;
}
return new_server;
id_type == SILC_ID_SERVER &&
server->id_entry->server_type != SILC_BACKUP_ROUTER) {
id_list = server->global_list;
- router_sock = server->router ? server->router->connection : sock;
+ router_sock = server->router ? SILC_PRIMARY_ROUTE(server) : sock;
}
} else {
void *sender_id = silc_id_str2id(packet->src_id, packet->src_id_len,
if (sock->type == SILC_SOCKET_TYPE_SERVER)
server->stat.cell_clients++;
server->stat.clients++;
+
+ /* Check if anyone is watching this nickname */
+ if (server->server_type == SILC_ROUTER && id_list == server->local_list)
+ silc_server_check_watcher_list(server, entry, NULL, 0);
}
break;
/* If the sender of this packet is server and we are router we need to
broadcast this packet to other routers in the network. */
- if (broadcast && !server->standalone && server->server_type == SILC_ROUTER &&
+ if (broadcast && server->server_type == SILC_ROUTER &&
sock->type == SILC_SOCKET_TYPE_SERVER &&
!(packet->flags & SILC_PACKET_FLAG_BROADCAST)) {
SILC_LOG_DEBUG(("Broadcasting received New ID packet"));
- silc_server_packet_send(server, server->router->connection,
+ silc_server_packet_send(server, SILC_PRIMARY_ROUTE(server),
packet->type,
packet->flags | SILC_PACKET_FLAG_BROADCAST,
buffer->data, buffer->len, FALSE);
- silc_server_backup_send(server, (SilcServerEntry)sock->user_data,
+ silc_server_backup_send(server, sock->user_data,
packet->type, packet->flags,
packet->buffer->data, packet->buffer->len,
FALSE, TRUE);
/* If the sender of this packet is server and we are router we need to
broadcast this packet to other routers in the network. Broadcast
this list packet instead of multiple New ID packets. */
- if (!server->standalone && server->server_type == SILC_ROUTER &&
+ if (server->server_type == SILC_ROUTER &&
sock->type == SILC_SOCKET_TYPE_SERVER &&
!(packet->flags & SILC_PACKET_FLAG_BROADCAST)) {
SILC_LOG_DEBUG(("Broadcasting received New ID List packet"));
- silc_server_packet_send(server, server->router->connection,
+ silc_server_packet_send(server, SILC_PRIMARY_ROUTE(server),
packet->type,
packet->flags | SILC_PACKET_FLAG_BROADCAST,
- packet->buffer->data, packet->buffer->len, FALSE);
- silc_server_backup_send(server, (SilcServerEntry)sock->user_data,
+ packet->buffer->data,
+ packet->buffer->len, FALSE);
+ silc_server_backup_send(server, sock->user_data,
packet->type, packet->flags,
packet->buffer->data, packet->buffer->len,
FALSE, TRUE);
data buffer, which we will here now fetch from the original buffer. */
new_id = silc_packet_context_alloc();
new_id->type = SILC_PACKET_NEW_ID;
- new_id->flags = packet->flags;
+ new_id->flags = packet->flags & (~SILC_PACKET_FLAG_LIST);
new_id->src_id = packet->src_id;
new_id->src_id_len = packet->src_id_len;
new_id->src_id_type = packet->src_id_type;
char *channel_name;
SilcUInt32 name_len;
unsigned char *id;
- SilcUInt32 id_len;
- SilcUInt32 mode;
+ SilcUInt32 id_len, cipher_len;
SilcServerEntry server_entry;
SilcChannelEntry channel;
-
- SILC_LOG_DEBUG(("Processing New Channel"));
+ const char *cipher;
if (sock->type == SILC_SOCKET_TYPE_CLIENT ||
packet->src_id_type != SILC_ID_SERVER ||
silc_id_render(channel_id, SILC_ID_CHANNEL),
sock->hostname));
- silc_idlist_add_channel(server->global_list, strdup(channel_name),
- 0, channel_id, sock->user_data, NULL, NULL, 0);
+ channel =
+ silc_idlist_add_channel(server->global_list, strdup(channel_name),
+ 0, channel_id, sock->user_data, NULL, NULL, 0);
+ if (!channel) {
+ silc_channel_payload_free(payload);
+ silc_free(channel_id);
+ return;
+ }
+ channel->disabled = TRUE; /* Disabled until someone JOINs */
+
server->stat.channels++;
+ if (server->server_type == SILC_ROUTER)
+ channel->users_resolved = TRUE;
}
} else {
/* The channel is coming from our server, thus it is in our cell
/* If the channel does not exist, then create it. This creates a new
key to the channel as well that we will send to the server. */
if (!channel) {
+ SILC_LOG_DEBUG(("Channel is new to us"));
+
/* The protocol says that the Channel ID's IP address must be based
on the router's IP address. Check whether the ID is based in our
IP and if it is not then create a new ID and enforce the server
!SILC_ID_COMPARE(channel_id, server->id, server->id->ip.data_len)) {
SilcChannelID *tmp;
SILC_LOG_DEBUG(("Forcing the server to change Channel ID"));
-
if (silc_id_create_channel_id(server, server->id, server->rng, &tmp)) {
silc_server_send_notify_channel_change(server, sock, FALSE,
channel_id, tmp);
+ silc_channel_payload_free(payload);
silc_free(channel_id);
- channel_id = tmp;
+ silc_free(tmp);
}
+
+ /* Wait that server re-announces this channel */
+ return;
}
/* Create the channel with the provided Channel ID */
silc_free(channel_id);
return;
}
+ channel->disabled = TRUE; /* Disabled until someone JOINs */
- /* Get the mode and set it to the channel */
- channel->mode = silc_channel_get_mode(payload);
+#if 0 /* We assume that CMODE_CHANGE notify is sent to us after this. */
+
+ /* XXX Dunno if this is supposed to be set in any server type. If set
+ here the CMODE_CHANGE that may follow sets mode that we already
+ have, and we may loose data from the CMODE_CHANGE notify. */
+ if (server_entry->server_type != SILC_BACKUP_ROUTER)
+ channel->mode = silc_channel_get_mode(payload);
+#endif
/* Send the new channel key to the server */
id = silc_id_id2str(channel->id, SILC_ID_CHANNEL);
id_len = silc_id_get_len(channel->id, SILC_ID_CHANNEL);
+ cipher = silc_cipher_get_name(channel->channel_key);
+ cipher_len = strlen(cipher);
chk = silc_channel_key_payload_encode(id_len, id,
- strlen(channel->channel_key->
- cipher->name),
- channel->channel_key->cipher->name,
+ cipher_len, cipher,
channel->key_len / 8,
channel->key);
silc_server_packet_send(server, sock, SILC_PACKET_CHANNEL_KEY, 0,
chk->data, chk->len, FALSE);
silc_buffer_free(chk);
-
+ silc_free(id);
} else {
/* The channel exist by that name, check whether the ID's match.
If they don't then we'll force the server to use the ID we have.
We also create a new key for the channel. */
- SilcBuffer users = NULL, users_modes = NULL;
+ SilcBuffer modes = NULL, users = NULL, users_modes = NULL;
+
+ SILC_LOG_DEBUG(("Channel already exists"));
if (!SILC_ID_CHANNEL_COMPARE(channel_id, channel->id)) {
/* They don't match, send CHANNEL_CHANGE notify to the server to
SILC_LOG_DEBUG(("Forcing the server to change Channel ID"));
silc_server_send_notify_channel_change(server, sock, FALSE,
channel_id, channel->id);
+ silc_channel_payload_free(payload);
+ silc_free(channel_id);
+
+ /* Wait that server re-announces this channel */
+ return;
}
+#if 0 /* We will announce our CMODE anyway for this channel, so no need
+ to check it (implicit enforce). */
+
/* If the mode is different from what we have then enforce the
mode change. */
mode = silc_channel_get_mode(payload);
SILC_LOG_DEBUG(("Forcing the server to change channel mode"));
silc_server_send_notify_cmode(server, sock, FALSE, channel,
channel->mode, server->id,
- SILC_ID_SERVER,
- channel->cipher, channel->hmac_name,
- channel->passphrase);
+ SILC_ID_SERVER, channel->cipher,
+ channel->hmac_name,
+ channel->passphrase,
+ channel->founder_key);
}
+#endif
/* Create new key for the channel and send it to the server and
everybody else possibly on the channel. */
-
if (!(channel->mode & SILC_CHANNEL_MODE_PRIVKEY)) {
- if (!silc_server_create_channel_key(server, channel, 0))
- return;
-
- /* Send to the channel */
- silc_server_send_channel_key(server, sock, channel, FALSE);
- id = silc_id_id2str(channel->id, SILC_ID_CHANNEL);
- id_len = silc_id_get_len(channel->id, SILC_ID_CHANNEL);
+
+ if (silc_hash_table_count(channel->user_list)) {
+ if (!silc_server_create_channel_key(server, channel, 0)) {
+ silc_channel_payload_free(payload);
+ silc_free(channel_id);
+ return;
+ }
+
+ /* Send to the channel */
+ silc_server_send_channel_key(server, sock, channel, FALSE);
+ }
/* Send to the server */
+ id = silc_id_id2str(channel->id, SILC_ID_CHANNEL);
+ id_len = silc_id_get_len(channel->id, SILC_ID_CHANNEL);
+ cipher = silc_cipher_get_name(channel->channel_key);
+ cipher_len = strlen(cipher);
chk = silc_channel_key_payload_encode(id_len, id,
- strlen(channel->channel_key->
- cipher->name),
- channel->channel_key->
- cipher->name,
+ cipher_len, cipher,
channel->key_len / 8,
channel->key);
silc_server_packet_send(server, sock, SILC_PACKET_CHANNEL_KEY, 0,
/* Since the channel is coming from server and we also know about it
then send the JOIN notify to the server so that it see's our
users on the channel "joining" the channel. */
- silc_server_announce_get_channel_users(server, channel, &users,
+ silc_server_announce_get_channel_users(server, channel, &modes, &users,
&users_modes);
if (users) {
silc_buffer_push(users, users->data - users->head);
users->data, users->len, FALSE);
silc_buffer_free(users);
}
+ if (modes) {
+ silc_buffer_push(modes, modes->data - modes->head);
+ silc_server_packet_send_dest(server, sock,
+ SILC_PACKET_NOTIFY, SILC_PACKET_FLAG_LIST,
+ channel->id, SILC_ID_CHANNEL,
+ modes->data, modes->len, FALSE);
+ silc_buffer_free(modes);
+ }
if (users_modes) {
silc_buffer_push(users_modes, users_modes->data - users_modes->head);
silc_server_packet_send_dest(server, sock,
users_modes->len, FALSE);
silc_buffer_free(users_modes);
}
+ if (channel->topic) {
+ silc_server_send_notify_topic_set(server, sock,
+ server->server_type == SILC_ROUTER ?
+ TRUE : FALSE, channel,
+ server->id, SILC_ID_SERVER,
+ channel->topic);
+ }
}
}
+ /* If the sender of this packet is server and we are router we need to
+ broadcast this packet to other routers in the network. Broadcast
+ this list packet instead of multiple New Channel packets. */
+ if (server->server_type == SILC_ROUTER &&
+ sock->type == SILC_SOCKET_TYPE_SERVER &&
+ !(packet->flags & SILC_PACKET_FLAG_BROADCAST)) {
+ SILC_LOG_DEBUG(("Broadcasting received New Channel packet"));
+ silc_server_packet_send(server, SILC_PRIMARY_ROUTE(server),
+ packet->type,
+ packet->flags | SILC_PACKET_FLAG_BROADCAST,
+ packet->buffer->data,
+ packet->buffer->len, FALSE);
+ silc_server_backup_send(server, sock->user_data,
+ packet->type, packet->flags,
+ packet->buffer->data, packet->buffer->len,
+ FALSE, TRUE);
+ }
+
silc_channel_payload_free(payload);
}
server->server_type == SILC_SERVER)
return;
- /* If the sender of this packet is server and we are router we need to
- broadcast this packet to other routers in the network. Broadcast
- this list packet instead of multiple New Channel packets. */
- if (!server->standalone && server->server_type == SILC_ROUTER &&
- sock->type == SILC_SOCKET_TYPE_SERVER &&
- !(packet->flags & SILC_PACKET_FLAG_BROADCAST)) {
- SILC_LOG_DEBUG(("Broadcasting received New Channel List packet"));
- silc_server_packet_send(server, server->router->connection,
- packet->type,
- packet->flags | SILC_PACKET_FLAG_BROADCAST,
- packet->buffer->data, packet->buffer->len, FALSE);
- silc_server_backup_send(server, (SilcServerEntry)sock->user_data,
- packet->type, packet->flags,
- packet->buffer->data, packet->buffer->len,
- FALSE, TRUE);
- }
-
/* Make copy of the original packet context, except for the actual
data buffer, which we will here now fetch from the original buffer. */
new = silc_packet_context_alloc();
new->type = SILC_PACKET_NEW_CHANNEL;
- new->flags = packet->flags;
+ new->flags = packet->flags & (~SILC_PACKET_FLAG_LIST);
new->src_id = packet->src_id;
new->src_id_len = packet->src_id_len;
new->src_id_type = packet->src_id_type;
/* Get the route to the client */
dst_sock = silc_server_get_client_route(server, packet->dst_id,
- packet->dst_id_len, NULL, &idata);
+ packet->dst_id_len, NULL,
+ &idata, NULL);
if (!dst_sock)
return;
int ret;
SilcAuthMethod auth_meth = SILC_AUTH_NONE;
- SILC_LOG_DEBUG(("Start"));
-
- if (packet->src_id_type && packet->src_id_type != SILC_ID_CLIENT)
+ if (packet->src_id_type && packet->src_id_type != SILC_ID_CLIENT) {
+ SILC_LOG_DEBUG(("Request not from client"));
return;
+ }
/* Parse the payload */
ret = silc_buffer_unformat(packet->buffer,
auth_meth = SILC_AUTH_PUBLIC_KEY;
}
+ SILC_LOG_DEBUG(("Authentication method is [%s]",
+ (auth_meth == SILC_AUTH_NONE ? "None" :
+ auth_meth == SILC_AUTH_PASSWORD ? "Passphrase" :
+ "Digital signatures")));
+
/* Send it back to the client */
silc_server_send_connection_auth_request(server, sock, conn_type, auth_meth);
}
/* Get the route to the client */
dst_sock = silc_server_get_client_route(server, packet->dst_id,
- packet->dst_id_len, NULL, &idata);
+ packet->dst_id_len, NULL,
+ &idata, NULL);
if (!dst_sock)
return;
idata->hmac_send, idata->psn_send++,
packet, FALSE);
}
+
+typedef struct {
+ SilcServer server;
+ SilcSocketConnection sock;
+ SilcPacketContext *packet;
+ void *data;
+} *SilcServerResumeResolve;
+
+SILC_SERVER_CMD_FUNC(resume_resolve)
+{
+ SilcServerResumeResolve r = (SilcServerResumeResolve)context;
+ SilcServer server = r->server;
+ SilcSocketConnection sock = r->sock;
+ SilcServerCommandReplyContext reply = context2;
+ SilcClientEntry client;
+
+ SILC_LOG_DEBUG(("Start"));
+
+ if (!reply || !silc_command_get_status(reply->payload, NULL, NULL)) {
+ SILC_LOG_ERROR(("Client %s (%s) tried to resume unknown client, "
+ "closing connection", sock->hostname, sock->ip));
+ silc_server_disconnect_remote(server, sock,
+ SILC_STATUS_ERR_INCOMPLETE_INFORMATION,
+ "Resuming not possible");
+ if (sock->user_data)
+ silc_server_free_sock_user_data(server, sock, NULL);
+ goto out;
+ }
+
+ if (reply && silc_command_get(reply->payload) == SILC_COMMAND_WHOIS) {
+ /* Get entry to the client, and resolve it if we don't have it. */
+ client = silc_idlist_find_client_by_id(server->local_list,
+ r->data, TRUE, NULL);
+ if (!client) {
+ client = silc_idlist_find_client_by_id(server->global_list,
+ r->data, TRUE, NULL);
+ if (!client) {
+ SILC_LOG_ERROR(("Client %s (%s) tried to resume unknown client, "
+ "closing connection", sock->hostname, sock->ip));
+ silc_server_disconnect_remote(server, sock,
+ SILC_STATUS_ERR_INCOMPLETE_INFORMATION,
+ "Resuming not possible");
+ if (sock->user_data)
+ silc_server_free_sock_user_data(server, sock, NULL);
+ goto out;
+ }
+ }
+
+ if (!(client->mode & SILC_UMODE_DETACHED)) {
+ SILC_LOG_ERROR(("Client %s (%s) tried to resume un-detached client, "
+ "closing connection", sock->hostname, sock->ip));
+ silc_server_disconnect_remote(server, sock,
+ SILC_STATUS_ERR_INCOMPLETE_INFORMATION,
+ "Resuming not possible");
+ if (sock->user_data)
+ silc_server_free_sock_user_data(server, sock, NULL);
+ goto out;
+ }
+
+ client->data.status |= SILC_IDLIST_STATUS_RESUME_RES;
+ }
+
+ /* Reprocess the packet */
+ silc_server_resume_client(server, sock, r->packet);
+
+ out:
+ silc_socket_free(r->sock);
+ silc_packet_context_free(r->packet);
+ silc_free(r->data);
+ silc_free(r);
+}
+
+/* Received client resuming packet. This is used to resume detached
+ client session. It can be sent by the client who wishes to resume
+ but this is also sent by servers and routers to notify other routers
+ that the client is not detached anymore. */
+
+void silc_server_resume_client(SilcServer server,
+ SilcSocketConnection sock,
+ SilcPacketContext *packet)
+{
+ SilcBuffer buffer = packet->buffer, buf;
+ SilcIDListData idata;
+ SilcIDCacheEntry id_cache = NULL;
+ SilcClientEntry detached_client;
+ SilcClientID *client_id = NULL;
+ unsigned char *id_string, *auth = NULL;
+ SilcUInt16 id_len, auth_len = 0;
+ int ret, nickfail = 0;
+ bool resolved, local, nick_change = FALSE, resolve = FALSE;
+ SilcChannelEntry channel;
+ SilcHashTableList htl;
+ SilcChannelClientEntry chl;
+ SilcServerResumeResolve r;
+ const char *cipher;
+
+ ret = silc_buffer_unformat(buffer,
+ SILC_STR_UI16_NSTRING(&id_string, &id_len),
+ SILC_STR_END);
+ if (ret != -1)
+ client_id = silc_id_str2id(id_string, id_len, SILC_ID_CLIENT);
+
+ if (sock->type == SILC_SOCKET_TYPE_CLIENT) {
+ /* Client send this and is attempting to resume to old client session */
+ SilcClientEntry client;
+ SilcBuffer keyp;
+
+ if (ret != -1) {
+ silc_buffer_pull(buffer, 2 + id_len);
+ auth = buffer->data;
+ auth_len = buffer->len;
+ silc_buffer_push(buffer, 2 + id_len);
+ }
+
+ if (!client_id || auth_len < 128) {
+ SILC_LOG_ERROR(("Client %s (%s) sent incomplete resume information, "
+ "closing connection", sock->hostname, sock->ip));
+ silc_server_disconnect_remote(server, sock,
+ SILC_STATUS_ERR_INCOMPLETE_INFORMATION,
+ "Resuming not possible");
+ if (sock->user_data)
+ silc_server_free_sock_user_data(server, sock, NULL);
+ silc_free(client_id);
+ return;
+ }
+
+ /* Take client entry of this connection */
+ client = (SilcClientEntry)sock->user_data;
+ idata = (SilcIDListData)client;
+
+ /* Get entry to the client, and resolve it if we don't have it. */
+ detached_client = silc_server_query_client(server, client_id, FALSE,
+ &resolved);
+ if (!detached_client) {
+ if (resolved) {
+ /* The client info is being resolved. Reprocess this packet after
+ receiving the reply to the query. */
+ SILC_LOG_DEBUG(("Resolving client"));
+ r = silc_calloc(1, sizeof(*r));
+ if (!r)
+ return;
+ r->server = server;
+ r->sock = silc_socket_dup(sock);
+ r->packet = silc_packet_context_dup(packet);
+ r->data = client_id;
+ silc_server_command_pending(server, SILC_COMMAND_WHOIS,
+ server->cmd_ident,
+ silc_server_command_resume_resolve, r);
+ } else {
+ SILC_LOG_ERROR(("Client %s (%s) tried to resume unknown client, "
+ "closing connection", sock->hostname, sock->ip));
+ silc_server_disconnect_remote(server, sock,
+ SILC_STATUS_ERR_INCOMPLETE_INFORMATION,
+ "Resuming not possible");
+ if (sock->user_data)
+ silc_server_free_sock_user_data(server, sock, NULL);
+ silc_free(client_id);
+ }
+ return;
+ }
+
+ if (!(detached_client->mode & SILC_UMODE_DETACHED))
+ resolve = TRUE;
+ if (!silc_hash_table_count(detached_client->channels) &&
+ detached_client->router)
+ resolve = TRUE;
+ if (!detached_client->nickname)
+ resolve = TRUE;
+ if (detached_client->data.status & SILC_IDLIST_STATUS_RESUME_RES)
+ resolve = FALSE;
+
+ if (resolve) {
+ if (server->server_type == SILC_SERVER && !server->standalone) {
+ /* The client info is being resolved. Reprocess this packet after
+ receiving the reply to the query. */
+ SILC_LOG_DEBUG(("Resolving client info"));
+ silc_server_query_client(server, client_id, TRUE, NULL);
+ r = silc_calloc(1, sizeof(*r));
+ if (!r)
+ return;
+ r->server = server;
+ r->sock = silc_socket_dup(sock);
+ r->packet = silc_packet_context_dup(packet);
+ r->data = client_id;
+ silc_server_command_pending(server, SILC_COMMAND_WHOIS,
+ server->cmd_ident,
+ silc_server_command_resume_resolve, r);
+ return;
+ }
+ if (server->server_type == SILC_SERVER) {
+ SILC_LOG_ERROR(("Client %s (%s) tried to resume un-detached client, "
+ "closing connection", sock->hostname, sock->ip));
+ silc_server_disconnect_remote(server, sock,
+ SILC_STATUS_ERR_INCOMPLETE_INFORMATION,
+ "Resuming not possible");
+ if (sock->user_data)
+ silc_server_free_sock_user_data(server, sock, NULL);
+ silc_free(client_id);
+ return;
+ }
+ }
+
+ /* Check that we have the public key of the client, if not then we must
+ resolve it first. */
+ if (!detached_client->data.public_key) {
+ if (server->server_type == SILC_SERVER && server->standalone) {
+ SILC_LOG_ERROR(("Detached client's public key not present, "
+ "closing connection"));
+ silc_server_disconnect_remote(server, sock,
+ SILC_STATUS_ERR_INCOMPLETE_INFORMATION,
+ "Resuming not possible");
+ if (sock->user_data)
+ silc_server_free_sock_user_data(server, sock, NULL);
+ silc_free(client_id);
+ } else {
+ /* We must retrieve the detached client's public key by sending
+ GETKEY command. Reprocess this packet after receiving the key */
+ SilcBuffer idp = silc_id_payload_encode(client_id, SILC_ID_CLIENT);
+ SilcSocketConnection dest_sock =
+ silc_server_get_client_route(server, NULL, 0, client_id, NULL, NULL);
+
+ SILC_LOG_DEBUG(("Resolving client public key"));
+
+ silc_server_send_command(server, dest_sock ? dest_sock :
+ SILC_PRIMARY_ROUTE(server),
+ SILC_COMMAND_GETKEY, ++server->cmd_ident,
+ 1, 1, idp->data, idp->len);
+
+ r = silc_calloc(1, sizeof(*r));
+ if (!r) {
+ silc_free(client_id);
+ return;
+ }
+
+ r->server = server;
+ r->sock = silc_socket_dup(sock);
+ r->packet = silc_packet_context_dup(packet);
+ silc_server_command_pending(server, SILC_COMMAND_GETKEY,
+ server->cmd_ident,
+ silc_server_command_resume_resolve, r);
+
+ silc_buffer_free(idp);
+ }
+ silc_free(client_id);
+ return;
+ } else if (!silc_pkcs_public_key_compare(detached_client->data.public_key,
+ idata->public_key)) {
+ /* We require that the connection and resuming authentication data
+ must be using same key pair. */
+ SILC_LOG_ERROR(("Resuming attempted with wrong public key, "
+ "closing connection"));
+ silc_server_disconnect_remote(server, sock,
+ SILC_STATUS_ERR_INCOMPLETE_INFORMATION,
+ "Resuming not possible");
+ if (sock->user_data)
+ silc_server_free_sock_user_data(server, sock, NULL);
+ silc_free(client_id);
+ return;
+ }
+
+ /* Verify the authentication payload. This has to be successful in
+ order to allow the resuming */
+ if (!idata->hash ||
+ !silc_auth_verify_data(auth, auth_len, SILC_AUTH_PUBLIC_KEY,
+ detached_client->data.public_key, 0,
+ idata->hash, detached_client->id,
+ SILC_ID_CLIENT)) {
+ SILC_LOG_ERROR(("Client %s (%s) resume authentication failed, "
+ "closing connection", sock->hostname, sock->ip));
+ silc_server_disconnect_remote(server, sock,
+ SILC_STATUS_ERR_INCOMPLETE_INFORMATION,
+ "Resuming not possible");
+ if (sock->user_data)
+ silc_server_free_sock_user_data(server, sock, NULL);
+ silc_free(client_id);
+ return;
+ }
+
+ /* Now resume the client to the network */
+
+ silc_schedule_task_del_by_context(server->schedule, detached_client);
+ sock->user_data = detached_client;
+ detached_client->connection = sock;
+
+ /* Take new keys and stuff into use in the old entry */
+ silc_idlist_del_data(detached_client);
+ silc_idlist_add_data(detached_client, idata);
+ detached_client->data.status |= SILC_IDLIST_STATUS_REGISTERED;
+ detached_client->data.status |= SILC_IDLIST_STATUS_RESUMED;
+ detached_client->data.status |= SILC_IDLIST_STATUS_LOCAL;
+ detached_client->data.status &= ~SILC_IDLIST_STATUS_RESUME_RES;
+ detached_client->mode &= ~SILC_UMODE_DETACHED;
+ server->stat.my_detached--;
+
+ /* Send the RESUME_CLIENT packet to our primary router so that others
+ know this client isn't detached anymore. */
+ buf = silc_buffer_alloc_size(2 + id_len);
+ silc_buffer_format(buf,
+ SILC_STR_UI_SHORT(id_len),
+ SILC_STR_UI_XNSTRING(id_string, id_len),
+ SILC_STR_END);
+
+ /* Send to primary router */
+ silc_server_packet_send(server, SILC_PRIMARY_ROUTE(server),
+ SILC_PACKET_RESUME_CLIENT, 0,
+ buf->data, buf->len, TRUE);
+ silc_server_backup_send(server, detached_client->router,
+ SILC_PACKET_RESUME_CLIENT, 0,
+ buf->data, buf->len, TRUE, TRUE);
+
+ /* As router we must deliver this packet directly to the original
+ server whom this client was earlier. */
+ if (server->server_type == SILC_ROUTER && detached_client->router &&
+ detached_client->router->server_type != SILC_ROUTER)
+ silc_server_packet_send(server, detached_client->router->connection,
+ SILC_PACKET_RESUME_CLIENT, 0,
+ buf->data, buf->len, TRUE);
+ silc_buffer_free(buf);
+
+ detached_client->router = NULL;
+
+ /* Delete this client entry since we're resuming to old one. */
+ server->stat.my_clients--;
+ server->stat.clients--;
+ if (server->stat.cell_clients)
+ server->stat.cell_clients--;
+ silc_server_remove_from_channels(server, NULL, client, FALSE,
+ NULL, FALSE, FALSE);
+ silc_server_del_from_watcher_list(server, client);
+ if (!silc_idlist_del_client(server->local_list, client))
+ silc_idlist_del_client(server->global_list, client);
+ client = detached_client;
+ silc_free(client->servername);
+ client->servername = strdup(server->server_name);
+
+ /* If the ID is not based in our ID then change it */
+ if (!SILC_ID_COMPARE(client->id, server->id, server->id->ip.data_len)) {
+ silc_free(client_id);
+ while (!silc_id_create_client_id(server, server->id, server->rng,
+ server->md5hash, client->nickname,
+ &client_id)) {
+ nickfail++;
+ if (nickfail > 9) {
+ silc_server_disconnect_remote(server, sock,
+ SILC_STATUS_ERR_BAD_NICKNAME, NULL);
+ if (sock->user_data)
+ silc_server_free_sock_user_data(server, sock, NULL);
+ return;
+ }
+ snprintf(&client->nickname[strlen(client->nickname) - 1], 1,
+ "%d", nickfail);
+ }
+ nick_change = TRUE;
+ }
+
+ if (nick_change) {
+ /* Notify about Client ID change, nickname doesn't actually change. */
+ silc_server_send_notify_nick_change(server, SILC_PRIMARY_ROUTE(server),
+ SILC_BROADCAST(server),
+ client->id, client_id,
+ client->nickname);
+ }
+
+ /* Resolve users on those channels that client has joined but we
+ haven't resolved user list yet. */
+ if (server->server_type == SILC_SERVER && !server->standalone) {
+ silc_hash_table_list(client->channels, &htl);
+ while (silc_hash_table_get(&htl, NULL, (void **)&chl)) {
+ channel = chl->channel;
+ SILC_LOG_DEBUG(("Resolving users for %s channel",
+ channel->channel_name));
+ if (channel->disabled || !channel->users_resolved) {
+ silc_server_send_command(server, SILC_PRIMARY_ROUTE(server),
+ SILC_COMMAND_USERS, ++server->cmd_ident,
+ 1, 2, channel->channel_name,
+ strlen(channel->channel_name));
+ }
+ }
+ silc_hash_table_list_reset(&htl);
+ }
+
+ /* Send the new client ID to the client. After this client may start
+ receiving other packets, and may start sending packets too. */
+ silc_server_send_new_id(server, sock, FALSE, client_id, SILC_ID_CLIENT,
+ silc_id_get_len(client_id, SILC_ID_CLIENT));
+
+ if (nick_change) {
+ /* Send NICK change notify to channels as well. */
+ SilcBuffer oidp, nidp;
+ oidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
+ nidp = silc_id_payload_encode(client_id, SILC_ID_CLIENT);
+ silc_server_send_notify_on_channels(server, NULL, client,
+ SILC_NOTIFY_TYPE_NICK_CHANGE, 3,
+ oidp->data, oidp->len,
+ nidp->data, nidp->len,
+ client->nickname,
+ strlen(client->nickname));
+ silc_buffer_free(oidp);
+ silc_buffer_free(nidp);
+ }
+
+ /* Add the client again to the ID cache to get it to correct list */
+ if (!silc_idcache_del_by_context(server->local_list->clients, client))
+ silc_idcache_del_by_context(server->global_list->clients, client);
+ silc_free(client->id);
+ client->id = client_id;
+ client_id = NULL;
+ silc_idcache_add(server->local_list->clients, client->nickname,
+ client->id, client, 0, NULL);
+
+ /* Send some nice info to the client */
+ silc_server_send_connect_notifys(server, sock, client);
+
+ /* Send all channel keys of channels the client has joined */
+ silc_hash_table_list(client->channels, &htl);
+ while (silc_hash_table_get(&htl, NULL, (void **)&chl)) {
+ bool created = FALSE;
+ channel = chl->channel;
+
+ if (channel->mode & SILC_CHANNEL_MODE_PRIVKEY)
+ continue;
+
+ /* If we don't have channel key, then create one */
+ if (!channel->channel_key) {
+ if (!silc_server_create_channel_key(server, channel, 0))
+ continue;
+ created = TRUE;
+ }
+
+ id_string = silc_id_id2str(channel->id, SILC_ID_CHANNEL);
+ cipher = silc_cipher_get_name(channel->channel_key);
+ keyp =
+ silc_channel_key_payload_encode(silc_id_get_len(channel->id,
+ SILC_ID_CHANNEL),
+ id_string,
+ strlen(cipher), cipher,
+ channel->key_len / 8, channel->key);
+ silc_free(id_string);
+
+ /* Send the channel key to the client */
+ silc_server_packet_send(server, sock, SILC_PACKET_CHANNEL_KEY, 0,
+ keyp->data, keyp->len, FALSE);
+
+ /* Distribute the channel key to channel */
+ if (created) {
+ silc_server_send_channel_key(server, NULL, channel,
+ server->server_type == SILC_ROUTER ?
+ FALSE : !server->standalone);
+ silc_server_backup_send(server, NULL, SILC_PACKET_CHANNEL_KEY, 0,
+ keyp->data, keyp->len, FALSE, TRUE);
+ }
+
+ silc_buffer_free(keyp);
+ }
+ silc_hash_table_list_reset(&htl);
+
+ } else if (sock->type != SILC_SOCKET_TYPE_CLIENT) {
+ /* Server or router sent this to us to notify that that a client has
+ been resumed. */
+ SilcServerEntry server_entry;
+ SilcServerID *server_id;
+
+ if (!client_id) {
+ SILC_LOG_DEBUG(("Malformed resuming packet"));
+ return;
+ }
+
+ /* Get entry to the client, and resolve it if we don't have it. */
+ detached_client = silc_idlist_find_client_by_id(server->local_list,
+ client_id, TRUE,
+ &id_cache);
+ if (!detached_client) {
+ detached_client = silc_idlist_find_client_by_id(server->global_list,
+ client_id, TRUE,
+ &id_cache);
+ if (!detached_client) {
+ SILC_LOG_DEBUG(("Resuming client is unknown"));
+ silc_free(client_id);
+ return;
+ }
+ }
+
+ /* Check that the client has not been resumed already because it is
+ protocol error to attempt to resume more than once. The client
+ will be killed if this protocol error occurs. */
+ if (detached_client->data.status & SILC_IDLIST_STATUS_RESUMED &&
+ !(detached_client->mode & SILC_UMODE_DETACHED)) {
+ /* The client is clearly attempting to resume more than once and
+ perhaps playing around by resuming from several different places
+ at the same time. */
+ SILC_LOG_DEBUG(("Attempting to re-resume client, killing both"));
+ silc_server_kill_client(server, detached_client, NULL,
+ server->id, SILC_ID_SERVER);
+ silc_free(client_id);
+ return;
+ }
+
+ /* Check whether client is detached at all */
+ if (!(detached_client->mode & SILC_UMODE_DETACHED)) {
+ SILC_LOG_DEBUG(("Client is not detached"));
+ silc_free(client_id);
+ return;
+ }
+
+ SILC_LOG_DEBUG(("Resuming detached client"));
+
+ /* If the sender of this packet is server and we are router we need to
+ broadcast this packet to other routers in the network. */
+ if (server->server_type == SILC_ROUTER &&
+ sock->type == SILC_SOCKET_TYPE_SERVER &&
+ !(packet->flags & SILC_PACKET_FLAG_BROADCAST)) {
+ SILC_LOG_DEBUG(("Broadcasting received Resume Client packet"));
+ silc_server_packet_send(server, SILC_PRIMARY_ROUTE(server),
+ packet->type,
+ packet->flags | SILC_PACKET_FLAG_BROADCAST,
+ buffer->data, buffer->len, FALSE);
+ silc_server_backup_send(server, sock->user_data,
+ packet->type, packet->flags,
+ packet->buffer->data, packet->buffer->len,
+ FALSE, TRUE);
+ }
+
+ /* Client is detached, and now it is resumed. Remove the detached
+ mode and mark that it is resumed. */
+ silc_idlist_del_data(detached_client);
+ detached_client->mode &= ~SILC_UMODE_DETACHED;
+ detached_client->data.status |= SILC_IDLIST_STATUS_RESUMED;
+ detached_client->data.status &= ~SILC_IDLIST_STATUS_LOCAL;
+ id_cache->expire = 0;
+
+ silc_schedule_task_del_by_context(server->schedule, detached_client);
+
+ /* Get the new owner of the resumed client */
+ server_id = silc_id_str2id(packet->src_id, packet->src_id_len,
+ packet->src_id_type);
+ if (!server_id) {
+ silc_free(client_id);
+ return;
+ }
+
+ /* Get server entry */
+ server_entry = silc_idlist_find_server_by_id(server->global_list,
+ server_id, TRUE, NULL);
+ local = FALSE;
+ if (!server_entry) {
+ server_entry = silc_idlist_find_server_by_id(server->local_list,
+ server_id, TRUE, NULL);
+ local = TRUE;
+ if (!server_entry) {
+ silc_free(server_id);
+ silc_free(client_id);
+ return;
+ }
+ }
+
+ if (server->server_type == SILC_ROUTER &&
+ sock->type == SILC_SOCKET_TYPE_ROUTER &&
+ server_entry->server_type == SILC_ROUTER)
+ local = FALSE;
+
+ /* Change the client to correct list. */
+ if (!silc_idcache_del_by_context(server->local_list->clients,
+ detached_client))
+ silc_idcache_del_by_context(server->global_list->clients,
+ detached_client);
+ silc_idcache_add(local && server->server_type == SILC_ROUTER ?
+ server->local_list->clients :
+ server->global_list->clients,
+ detached_client->nickname,
+ detached_client->id, detached_client, FALSE, NULL);
+
+ /* Change the owner of the client */
+ detached_client->router = server_entry;
+
+ /* Update channel information regarding global clients on channel. */
+ if (server->server_type != SILC_ROUTER) {
+ silc_hash_table_list(detached_client->channels, &htl);
+ while (silc_hash_table_get(&htl, NULL, (void **)&chl))
+ chl->channel->global_users =
+ silc_server_channel_has_global(chl->channel);
+ silc_hash_table_list_reset(&htl);
+ }
+
+ silc_free(server_id);
+ }
+
+ silc_free(client_id);
+}
projects / silc.git / blobdiff