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;
+
/* Removes the client from channels and possibly removes the channels
as well. After removing those channels that exist, their channel
keys are regnerated. This is called only by the function
silc_server_remove_clients_by_server. */
-static void silc_server_remove_clients_channels(SilcServer server,
- SilcSocketConnection sock,
- SilcClientEntry client,
- SilcHashTable channels)
+static void
+silc_server_remove_clients_channels(SilcServer server,
+ SilcServerEntry server_entry,
+ SilcHashTable clients,
+ SilcClientEntry client,
+ SilcHashTable channels)
{
SilcChannelEntry channel;
- SilcChannelClientEntry chl;
- SilcHashTableList htl;
- SilcBuffer clidp;
+ SilcChannelClientEntry chl, chl2;
+ SilcHashTableList htl, htl2;
SILC_LOG_DEBUG(("Start"));
- if (!client || !client->id)
+ if (!client)
return;
- clidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
+ if (silc_hash_table_find(clients, client, NULL, NULL))
+ silc_hash_table_del(clients, client);
/* Remove the client from all channels. The client is removed from
the channels' user list. */
while (silc_hash_table_get(&htl, NULL, (void **)&chl)) {
channel = chl->channel;
- /* Remove channel from client's channel list */
- silc_hash_table_del(client->channels, channel);
-
- /* Remove channel if there is no users anymore */
+ /* Remove channel if this is last client leaving the channel, unless
+ the channel is permanent. */
if (server->server_type == SILC_ROUTER &&
silc_hash_table_count(channel->user_list) < 2) {
-
if (silc_hash_table_find(channels, channel, NULL, NULL))
silc_hash_table_del(channels, channel);
-
- if (channel->rekey)
- silc_schedule_task_del_by_context(server->schedule, channel->rekey);
-
- if (silc_idlist_del_channel(server->local_list, channel))
- server->stat.my_channels--;
- else
- silc_idlist_del_channel(server->global_list, channel);
+ silc_schedule_task_del_by_context(server->schedule, channel->rekey);
+ silc_server_channel_delete(server, channel);
continue;
}
- /* Remove client from channel's client list */
+ silc_hash_table_del(client->channels, channel);
silc_hash_table_del(channel->user_list, chl->client);
channel->user_count--;
channel->global_users = FALSE;
silc_free(chl);
- server->stat.my_chanclients--;
+
+ /* Update statistics */
+ if (SILC_IS_LOCAL(client))
+ server->stat.my_chanclients--;
+ if (server->server_type == SILC_ROUTER) {
+ server->stat.cell_chanclients--;
+ server->stat.chanclients--;
+ }
/* If there is not at least one local user on the channel then we don't
- need the channel entry anymore, we can remove it safely. */
+ need the channel entry anymore, we can remove it safely, unless the
+ channel is permanent channel */
if (server->server_type != SILC_ROUTER &&
!silc_server_channel_has_local(channel)) {
-
if (silc_hash_table_find(channels, channel, NULL, NULL))
silc_hash_table_del(channels, channel);
+ silc_schedule_task_del_by_context(server->schedule, channel->rekey);
+ silc_server_channel_delete(server, channel);
+ continue;
+ }
- if (channel->rekey)
- silc_schedule_task_del_by_context(server->schedule, channel->rekey);
-
- if (channel->founder_key) {
- /* The founder auth data exists, do not remove the channel entry */
- SilcChannelClientEntry chl2;
- SilcHashTableList htl2;
-
- channel->disabled = TRUE;
-
- silc_hash_table_list(channel->user_list, &htl2);
- while (silc_hash_table_get(&htl2, NULL, (void **)&chl2)) {
- silc_hash_table_del(chl2->client->channels, channel);
- silc_hash_table_del(channel->user_list, chl2->client);
- channel->user_count--;
- silc_free(chl2);
- }
- silc_hash_table_list_reset(&htl2);
+ /* Mark other local clients to the table of clients whom will receive
+ the SERVER_SIGNOFF notify. */
+ silc_hash_table_list(channel->user_list, &htl2);
+ while (silc_hash_table_get(&htl2, NULL, (void **)&chl2)) {
+ SilcClientEntry c = chl2->client;
+ if (!c)
continue;
- }
- /* Remove the channel entry */
- if (silc_idlist_del_channel(server->local_list, channel))
- server->stat.my_channels--;
- else
- silc_idlist_del_channel(server->global_list, channel);
- continue;
+ /* Add client to table, if it's not from the signoff server */
+ if (c->router != server_entry &&
+ !silc_hash_table_find(clients, c, NULL, NULL))
+ silc_hash_table_add(clients, c, c);
}
+ silc_hash_table_list_reset(&htl2);
/* Add the channel to the the channels list to regenerate the
channel key */
silc_hash_table_add(channels, channel, channel);
}
silc_hash_table_list_reset(&htl);
-
- silc_buffer_free(clidp);
}
/* This function is used to remove all client entries by the server `entry'.
SilcIDCacheEntry id_cache = NULL;
SilcClientEntry client = NULL;
SilcBuffer idp;
- SilcClientEntry *clients = NULL;
- SilcUInt32 clients_c = 0;
unsigned char **argv = NULL;
SilcUInt32 *argv_lens = NULL, *argv_types = NULL, argc = 0;
SilcHashTableList htl;
SilcChannelEntry channel;
- SilcHashTable channels;
+ SilcHashTable channels, clients;
int i;
SILC_LOG_DEBUG(("Start"));
from the channels. */
channels = silc_hash_table_alloc(0, silc_hash_ptr, NULL, NULL, NULL,
NULL, NULL, TRUE);
+ clients = silc_hash_table_alloc(0, silc_hash_ptr, NULL, NULL, NULL,
+ NULL, NULL, TRUE);
if (server_signoff) {
idp = silc_id_payload_encode(entry->id, SILC_ID_SERVER);
}
if (client->router != entry) {
- if (server_signoff) {
- clients = silc_realloc(clients,
- sizeof(*clients) * (clients_c + 1));
- clients[clients_c] = client;
- clients_c++;
- }
-
if (!silc_idcache_list_next(list, &id_cache))
break;
else
/* 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_server_remove_clients_channels(server, entry, clients,
+ client, channels);
+ silc_server_del_from_watcher_list(server, client);
+
/* Remove the client entry */
- silc_server_remove_clients_channels(server, NULL, client, channels);
if (!server_signoff) {
client->data.status &= ~SILC_IDLIST_STATUS_REGISTERED;
id_cache->expire = SILC_ID_CACHE_EXPIRE_DEF;
}
if (client->router != entry) {
- if (server_signoff && client->connection) {
- clients = silc_realloc(clients,
- sizeof(*clients) * (clients_c + 1));
- clients[clients_c] = client;
- clients_c++;
- }
-
if (!silc_idcache_list_next(list, &id_cache))
break;
else
/* 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_server_remove_clients_channels(server, entry, clients,
+ client, channels);
+ silc_server_del_from_watcher_list(server, client);
+
/* Remove the client entry */
- silc_server_remove_clients_channels(server, NULL, client, channels);
if (!server_signoff) {
client->data.status &= ~SILC_IDLIST_STATUS_REGISTERED;
id_cache->expire = SILC_ID_CACHE_EXPIRE_DEF;
if (server_signoff) {
SilcBuffer args, not;
+ SILC_LOG_DEBUG(("Sending SERVER_SIGNOFF for %d clients",
+ argc - 1));
+
/* Send SERVER_SIGNOFF notify to our primary router */
- if (!server->standalone && server->router &&
- server->router != entry) {
+ if (server->router != entry) {
args = silc_argument_payload_encode(1, argv, argv_lens,
argv_types);
- silc_server_send_notify_args(server,
- server->router->connection,
- server->server_type == SILC_SERVER ?
- FALSE : TRUE,
+ silc_server_send_notify_args(server, SILC_PRIMARY_ROUTE(server),
+ SILC_BROADCAST(server),
SILC_NOTIFY_TYPE_SERVER_SIGNOFF,
argc, args);
silc_buffer_free(args);
argv_types);
not = silc_notify_payload_encode_args(SILC_NOTIFY_TYPE_SERVER_SIGNOFF,
argc, args);
- silc_server_packet_send_clients(server, clients, clients_c,
+ silc_server_packet_send_clients(server, clients,
SILC_PACKET_NOTIFY, 0, FALSE,
not->data, not->len, FALSE);
- silc_free(clients);
silc_buffer_free(args);
silc_buffer_free(not);
for (i = 0; i < argc; i++)
silc_free(argv);
silc_free(argv_lens);
silc_free(argv_types);
+ silc_hash_table_free(clients);
}
/* We must now re-generate the channel key for all channels that had
SILC_LOG_DEBUG(("Start"));
- SILC_LOG_DEBUG(("Updating %s", silc_id_render(from->id,
- SILC_ID_SERVER)));
- SILC_LOG_DEBUG(("to %s", silc_id_render(to->id,
- SILC_ID_SERVER)));
-
+ if (from)
+ SILC_LOG_DEBUG(("Updating %s", silc_id_render(from->id,
+ SILC_ID_SERVER)));
+ if (to)
+ SILC_LOG_DEBUG(("to %s", silc_id_render(to->id,
+ SILC_ID_SERVER)));
local = FALSE;
if (silc_idcache_get_all(server->global_list->clients, &list)) {
if (silc_idcache_list_first(list, &id_cache)) {
while (id_cache) {
client = (SilcClientEntry)id_cache->context;
- if (!(client->data.status & SILC_IDLIST_STATUS_REGISTERED)) {
+
+ /* If entry is disabled skip it. If entry is local to us, do not
+ switch it to anyone else, it is ours so skip it. */
+ if (!(client->data.status & SILC_IDLIST_STATUS_REGISTERED) ||
+ SILC_IS_LOCAL(client)) {
if (!silc_idcache_list_next(list, &id_cache))
break;
else
if (silc_idcache_list_first(list, &id_cache)) {
while (id_cache) {
client = (SilcClientEntry)id_cache->context;
- if (!(client->data.status & SILC_IDLIST_STATUS_REGISTERED)) {
+
+ /* If entry is disabled skip it. If entry is local to us, do not
+ switch it to anyone else, it is ours so skip it. */
+ if (!(client->data.status & SILC_IDLIST_STATUS_REGISTERED) ||
+ SILC_IS_LOCAL(client)) {
if (!silc_idcache_list_next(list, &id_cache))
break;
else
}
/* Updates servers that are from `from' to be originated from `to'. This
- will also update the server's connection to `to's connection. */
+ will also update the server's connection to `to's connection. If
+ `local_toggle_enabled' is TRUE then local server's connections are
+ enabled, if FALSE they are disabled. */
void silc_server_update_servers_by_server(SilcServer server,
SilcServerEntry from,
- SilcServerEntry to)
+ SilcServerEntry to,
+ bool local_toggle_enabled)
{
SilcIDCacheList list = NULL;
SilcIDCacheEntry id_cache = NULL;
SilcServerEntry server_entry = NULL;
- SILC_LOG_DEBUG(("Start"));
-
if (silc_idcache_get_all(server->local_list->servers, &list)) {
if (silc_idcache_list_first(list, &id_cache)) {
while (id_cache) {
server_entry = (SilcServerEntry)id_cache->context;
+
+ if (SILC_IS_LOCAL(server_entry)) {
+ if (server_entry != server->id_entry) {
+ if (local_toggle_enabled)
+ server_entry->data.status &= ~SILC_IDLIST_STATUS_DISABLED;
+ else
+ server_entry->data.status |= SILC_IDLIST_STATUS_DISABLED;
+ }
+
+ /* If entry is local to us, do not switch it to any oneelse,
+ it is ours. */
+ if (!silc_idcache_list_next(list, &id_cache))
+ break;
+ else
+ continue;
+ }
+
if (server_entry->router == from) {
+ SILC_LOG_DEBUG(("Updating server (local) %s",
+ server_entry->server_name ?
+ server_entry->server_name : ""));
server_entry->router = to;
server_entry->connection = to->connection;
}
+
if (!silc_idcache_list_next(list, &id_cache))
break;
}
if (silc_idcache_list_first(list, &id_cache)) {
while (id_cache) {
server_entry = (SilcServerEntry)id_cache->context;
+
+ if (SILC_IS_LOCAL(server_entry)) {
+ if (server_entry != server->id_entry) {
+ if (local_toggle_enabled)
+ server_entry->data.status &= ~SILC_IDLIST_STATUS_DISABLED;
+ else
+ server_entry->data.status |= SILC_IDLIST_STATUS_DISABLED;
+ }
+
+ /* If entry is local to us, do not switch it to anyone else,
+ it is ours. */
+ if (!silc_idcache_list_next(list, &id_cache))
+ break;
+ else
+ continue;
+ }
+
if (server_entry->router == from) {
+ SILC_LOG_DEBUG(("Updating server (global) %s",
+ server_entry->server_name ?
+ server_entry->server_name : ""));
server_entry->router = to;
server_entry->connection = to->connection;
}
+
if (!silc_idcache_list_next(list, &id_cache))
break;
}
SilcIDCacheEntry id_cache = NULL;
SilcChannelEntry channel = NULL;
- SILC_LOG_DEBUG(("Start"));
+ SILC_LOG_DEBUG(("Removing channels by server"));
if (silc_idcache_get_all(server->global_list->channels, &list)) {
if (silc_idcache_list_first(list, &id_cache)) {
SilcIDCacheEntry id_cache = NULL;
SilcChannelEntry channel = NULL;
- SILC_LOG_DEBUG(("Start"));
+ SILC_LOG_DEBUG(("Updating channels by server"));
if (silc_idcache_get_all(server->global_list->channels, &list)) {
if (silc_idcache_list_first(list, &id_cache)) {
return FALSE;
}
+/* This function removes the channel and all users on the channel, unless
+ the channel is permanent. In this case the channel is disabled but all
+ users are removed from the channel. Returns TRUE if the channel is
+ destroyed totally, and FALSE if it is permanent and remains. */
+
+bool silc_server_channel_delete(SilcServer server,
+ SilcChannelEntry channel)
+{
+ SilcChannelClientEntry chl;
+ SilcHashTableList htl;
+ bool delchan = !(channel->mode & SILC_CHANNEL_MODE_FOUNDER_AUTH);
+
+ if (delchan) {
+ SILC_LOG_DEBUG(("Deleting %s channel", channel->channel_name));
+
+ /* Update statistics */
+ if (server->server_type == SILC_ROUTER)
+ server->stat.chanclients -= channel->user_count;
+
+ /* Totally delete the channel and all users on the channel. The
+ users are deleted automatically in silc_idlist_del_channel. */
+ silc_schedule_task_del_by_context(server->schedule, channel->rekey);
+ if (silc_idlist_del_channel(server->local_list, channel)) {
+ server->stat.my_channels--;
+ if (server->server_type == SILC_ROUTER) {
+ server->stat.channels--;
+ server->stat.cell_channels--;
+ }
+ } else {
+ if (silc_idlist_del_channel(server->global_list, channel))
+ if (server->server_type == SILC_ROUTER)
+ server->stat.channels--;
+ }
+
+ return FALSE;
+ }
+
+ /* Channel is permanent, do not remove it, remove only users */
+ channel->disabled = TRUE;
+ silc_hash_table_list(channel->user_list, &htl);
+ while (silc_hash_table_get(&htl, NULL, (void *)&chl)) {
+ silc_hash_table_del(chl->client->channels, channel);
+ silc_hash_table_del(channel->user_list, chl->client);
+ channel->user_count--;
+
+ /* Update statistics */
+ if (SILC_IS_LOCAL(chl->client))
+ server->stat.my_chanclients--;
+ if (server->server_type == SILC_ROUTER) {
+ server->stat.cell_chanclients--;
+ server->stat.chanclients--;
+ }
+
+ silc_free(chl);
+ }
+ silc_hash_table_list_reset(&htl);
+
+ SILC_LOG_DEBUG(("Channel %s remains", channel->channel_name));
+
+ return TRUE;
+}
+
/* Returns TRUE if the given client is on the channel. FALSE if not.
This works because we assure that the user list on the channel is
always in up to date thus we can only check the channel list from
return count;
}
+/* Find number of sockets by IP address indicated by remote host, indicatd
+ by `ip' or `hostname', `port', and `type'. Returns 0 if socket connections
+ does not exist. If `ip' is provided then `hostname' is ignored. */
+
+SilcUInt32 silc_server_num_sockets_by_remote(SilcServer server,
+ const char *ip,
+ const char *hostname,
+ SilcUInt16 port,
+ SilcSocketType type)
+{
+ int i, count;
+
+ if (!ip && !hostname)
+ return 0;
+
+ for (i = 0, count = 0; i < server->config->param.connections_max; i++) {
+ if (server->sockets[i] &&
+ ((ip && !strcmp(server->sockets[i]->ip, ip)) ||
+ (hostname && !strcmp(server->sockets[i]->hostname, hostname))) &&
+ server->sockets[i]->port == port &&
+ server->sockets[i]->type == type)
+ count++;
+ }
+
+ return count;
+}
+
/* Finds locally cached public key by the public key received in the SKE.
If we have it locally cached then we trust it and will use it in the
authentication protocol. Returns the locally cached public key or NULL
SilcUInt32 r_software_version, l_software_version;
char *r_vendor_version = NULL, *l_vendor_version;
+ SILC_LOG_DEBUG(("Checking whether connection is allowed"));
+
/* Check version */
l_protocol_version =
if (ske && silc_ske_parse_version(ske, &r_protocol_version, NULL,
&r_software_version, NULL,
&r_vendor_version)) {
+ sock->version = r_protocol_version;
+
/* Match protocol version */
if (l_protocol_version && r_protocol_version &&
r_protocol_version < l_protocol_version) {
SILC_LOG_INFO(("Connection %s (%s) is too old version",
sock->hostname, sock->ip));
silc_server_disconnect_remote(server, sock,
- "Server closed connection: "
+ SILC_STATUS_ERR_BAD_VERSION,
"You support too old protocol version");
return FALSE;
}
SILC_LOG_INFO(("Connection %s (%s) is too old version",
sock->hostname, sock->ip));
silc_server_disconnect_remote(server, sock,
- "Server closed connection: "
+ SILC_STATUS_ERR_BAD_VERSION,
"You support too old software version");
return FALSE;
}
SILC_LOG_INFO(("Connection %s (%s) is unsupported version",
sock->hostname, sock->ip));
silc_server_disconnect_remote(server, sock,
- "Server closed connection: "
+ SILC_STATUS_ERR_BAD_VERSION,
"Your software is not supported");
return FALSE;
}
SILC_LOG_INFO(("Server is full, closing %s (%s) connection",
sock->hostname, sock->ip));
silc_server_disconnect_remote(server, sock,
- "Server closed connection: "
+ SILC_STATUS_ERR_RESOURCE_LIMIT,
"Server is full, try again later");
return FALSE;
}
SILC_LOG_INFO(("Too many connections from %s (%s), closing connection",
sock->hostname, sock->ip));
silc_server_disconnect_remote(server, sock,
- "Server closed connection: "
+ SILC_STATUS_ERR_RESOURCE_LIMIT,
"Too many connections from your host");
return FALSE;
}
if (is_op && is_fo)
return TRUE;
+ /* Founder implies operator */
+ if (is_fo)
+ is_op = TRUE;
+
/* We know that client is channel operator, check that they are not
changing anything that requires channel founder rights. Rest of the
modes are available automatically for channel operator. */
if (mode & SILC_CHANNEL_MODE_PRIVKEY) {
- if (!(channel->mode & SILC_CHANNEL_MODE_PRIVKEY))
- if (is_op && !is_fo)
- return FALSE;
+ if (is_op && !is_fo)
+ return FALSE;
} else {
if (channel->mode & SILC_CHANNEL_MODE_PRIVKEY) {
if (is_op && !is_fo)
}
if (mode & SILC_CHANNEL_MODE_PASSPHRASE) {
- if (!(channel->mode & SILC_CHANNEL_MODE_PASSPHRASE))
+ if (!(channel->mode & SILC_CHANNEL_MODE_PASSPHRASE)) {
if (is_op && !is_fo)
return FALSE;
+ }
} else {
if (channel->mode & SILC_CHANNEL_MODE_PASSPHRASE) {
if (is_op && !is_fo)
}
if (mode & SILC_CHANNEL_MODE_CIPHER) {
- if (!(channel->mode & SILC_CHANNEL_MODE_CIPHER))
+ if (!(channel->mode & SILC_CHANNEL_MODE_CIPHER)) {
if (is_op && !is_fo)
return FALSE;
+ }
} else {
if (channel->mode & SILC_CHANNEL_MODE_CIPHER) {
if (is_op && !is_fo)
}
if (mode & SILC_CHANNEL_MODE_FOUNDER_AUTH) {
- if (!(channel->mode & SILC_CHANNEL_MODE_FOUNDER_AUTH))
+ if (!(channel->mode & SILC_CHANNEL_MODE_FOUNDER_AUTH)) {
if (is_op && !is_fo)
return FALSE;
+ }
} else {
if (channel->mode & SILC_CHANNEL_MODE_FOUNDER_AUTH) {
if (is_op && !is_fo)
}
}
+ if (mode & SILC_CHANNEL_MODE_SILENCE_USERS) {
+ if (!(channel->mode & SILC_CHANNEL_MODE_SILENCE_USERS)) {
+ if (is_op && !is_fo)
+ return FALSE;
+ }
+ } else {
+ if (channel->mode & SILC_CHANNEL_MODE_SILENCE_USERS) {
+ if (is_op && !is_fo)
+ return FALSE;
+ }
+ }
+
+ if (mode & SILC_CHANNEL_MODE_SILENCE_OPERS) {
+ if (!(channel->mode & SILC_CHANNEL_MODE_SILENCE_OPERS)) {
+ if (is_op && !is_fo)
+ return FALSE;
+ }
+ } else {
+ if (channel->mode & SILC_CHANNEL_MODE_SILENCE_OPERS) {
+ if (is_op && !is_fo)
+ return FALSE;
+ }
+ }
+
return TRUE;
}
return TRUE;
}
+
+/* This function is used to send the notify packets and motd to the
+ incoming client connection. */
+
+void silc_server_send_connect_notifys(SilcServer server,
+ SilcSocketConnection sock,
+ SilcClientEntry client)
+{
+ SilcIDListData idata = (SilcIDListData)client;
+
+ SILC_LOG_DEBUG(("Send welcome notifys"));
+
+ /* Send some nice info to the client */
+ SILC_SERVER_SEND_NOTIFY(server, sock, SILC_NOTIFY_TYPE_NONE,
+ ("Welcome to the SILC Network %s",
+ client->username));
+ SILC_SERVER_SEND_NOTIFY(server, sock, SILC_NOTIFY_TYPE_NONE,
+ ("Your host is %s, running version %s",
+ server->server_name, server_version));
+
+ if (server->server_type == SILC_ROUTER) {
+ SILC_SERVER_SEND_NOTIFY(server, sock, SILC_NOTIFY_TYPE_NONE,
+ ("There are %d clients, %d servers and %d "
+ "routers in SILC Network",
+ server->stat.clients, server->stat.servers + 1,
+ server->stat.routers));
+ } else {
+ if (server->stat.clients && server->stat.servers + 1)
+ SILC_SERVER_SEND_NOTIFY(server, sock, SILC_NOTIFY_TYPE_NONE,
+ ("There are %d clients, %d servers and %d "
+ "routers in SILC Network",
+ server->stat.clients, server->stat.servers + 1,
+ (server->standalone ? 0 :
+ !server->stat.routers ? 1 :
+ server->stat.routers)));
+ }
+
+ if (server->stat.cell_clients && server->stat.cell_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));
+ if (server->server_type == SILC_ROUTER) {
+ 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));
+ } 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));
+ }
+
+ if (server->stat.server_ops || server->stat.router_ops)
+ 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));
+ if (server->stat.my_router_ops + server->stat.my_server_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));
+
+ 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);
+}
+
+/* Kill the client indicated by `remote_client' sending KILLED notify
+ to the client, to all channels client has joined and to primary
+ router if needed. The killed client is also removed from all channels. */
+
+void silc_server_kill_client(SilcServer server,
+ SilcClientEntry remote_client,
+ const char *comment,
+ void *killer_id,
+ SilcIdType killer_id_type)
+{
+ SilcBuffer killed, killer;
+
+ SILC_LOG_DEBUG(("Killing client %s",
+ silc_id_render(remote_client->id, SILC_ID_CLIENT)));
+
+ /* Send the KILL notify packets. First send it to the channel, then
+ to our primary router and then directly to the client who is being
+ killed right now. */
+
+ killed = silc_id_payload_encode(remote_client->id, SILC_ID_CLIENT);
+ killer = silc_id_payload_encode(killer_id, killer_id_type);
+
+ /* Send KILLED notify to the channels. It is not sent to the client
+ as it will be sent differently destined directly to the client and not
+ to the channel. */
+ silc_server_send_notify_on_channels(server, remote_client,
+ remote_client, SILC_NOTIFY_TYPE_KILLED,
+ 3, killed->data, killed->len,
+ comment, comment ? strlen(comment) : 0,
+ killer->data, killer->len);
+
+ /* Send KILLED notify to primary route */
+ silc_server_send_notify_killed(server, SILC_PRIMARY_ROUTE(server),
+ SILC_BROADCAST(server), remote_client->id,
+ comment, killer_id, killer_id_type);
+
+ /* Send KILLED notify to the client directly */
+ if (remote_client->connection || remote_client->router)
+ silc_server_send_notify_killed(server, remote_client->connection ?
+ remote_client->connection :
+ remote_client->router->connection, FALSE,
+ remote_client->id, comment,
+ killer_id, killer_id_type);
+
+ /* Remove the client from all channels. This generates new keys to the
+ channels as well. */
+ silc_server_remove_from_channels(server, NULL, remote_client, FALSE,
+ NULL, TRUE);
+
+ /* Remove the client entry, If it is locally connected then we will also
+ disconnect the client here */
+ if (remote_client->connection) {
+ /* Remove locally conneted client */
+ SilcSocketConnection sock = remote_client->connection;
+ silc_server_free_client_data(server, sock, remote_client, FALSE, NULL);
+ silc_server_close_connection(server, sock);
+ } else {
+ /* Update statistics */
+ server->stat.clients--;
+ if (server->stat.cell_clients)
+ server->stat.cell_clients--;
+ SILC_OPER_STATS_UPDATE(remote_client, server, SILC_UMODE_SERVER_OPERATOR);
+ SILC_OPER_STATS_UPDATE(remote_client, router, SILC_UMODE_ROUTER_OPERATOR);
+
+ if (SILC_IS_LOCAL(remote_client)) {
+ server->stat.my_clients--;
+ silc_schedule_task_del_by_context(server->schedule, remote_client);
+ silc_idlist_del_data(remote_client);
+ }
+
+ /* Remove remote client */
+ if (!silc_idlist_del_client(server->global_list, remote_client)) {
+ /* Remove this client from watcher list if it is */
+ silc_server_del_from_watcher_list(server, remote_client);
+ silc_idlist_del_client(server->local_list, remote_client);
+ }
+ }
+
+ silc_buffer_free(killer);
+ silc_buffer_free(killed);
+}
+
+typedef struct {
+ SilcServer server;
+ SilcClientEntry client;
+ SilcNotifyType notify;
+ const char *new_nick;
+} WatcherNotifyContext;
+
+static void
+silc_server_check_watcher_list_foreach(void *key, void *context,
+ void *user_context)
+{
+ WatcherNotifyContext *notify = user_context;
+ SilcClientEntry entry = context;
+ SilcSocketConnection sock;
+
+ if (entry == notify->client)
+ return;
+
+ sock = silc_server_get_client_route(notify->server, NULL, 0, entry->id,
+ NULL, NULL);
+ if (sock) {
+ SILC_LOG_DEBUG(("Sending WATCH notify to %s",
+ silc_id_render(entry->id, SILC_ID_CLIENT)));
+
+ /* Send the WATCH notify */
+ silc_server_send_notify_watch(notify->server, sock, entry,
+ notify->client,
+ notify->new_nick ? notify->new_nick :
+ (const char *)notify->client->nickname,
+ notify->notify);
+ }
+}
+
+/* This function checks whether the `client' nickname is being watched
+ by someone, and notifies the watcher of the notify change of notify
+ type indicated by `notify'. */
+
+bool silc_server_check_watcher_list(SilcServer server,
+ SilcClientEntry client,
+ const char *new_nick,
+ SilcNotifyType notify)
+{
+ unsigned char hash[16];
+ WatcherNotifyContext n;
+
+ SILC_LOG_DEBUG(("Checking watcher list %s",
+ client->nickname ? client->nickname : (unsigned char *)""));
+
+ /* If the watching is rejected by the client do nothing */
+ if (client->mode & SILC_UMODE_REJECT_WATCHING)
+ return FALSE;
+
+ /* Make hash from the nick, or take it from Client ID */
+ if (client->nickname) {
+ char nick[128 + 1];
+ memset(nick, 0, sizeof(nick));
+ silc_to_lower(client->nickname, nick, sizeof(nick) - 1);
+ silc_hash_make(server->md5hash, nick, strlen(nick), hash);
+ } else {
+ memset(hash, 0, sizeof(hash));
+ memcpy(hash, client->id->hash, sizeof(client->id->hash));
+ }
+
+ n.server = server;
+ n.client = client;
+ n.new_nick = new_nick;
+ n.notify = notify;
+
+ /* Send notify to all watchers */
+ silc_hash_table_find_foreach(server->watcher_list, hash,
+ silc_server_check_watcher_list_foreach, &n);
+
+ return TRUE;
+}
+
+/* Remove the `client' from watcher list. After calling this the `client'
+ is not watching any nicknames. */
+
+bool silc_server_del_from_watcher_list(SilcServer server,
+ SilcClientEntry client)
+{
+ SilcHashTableList htl;
+ void *key;
+ SilcClientEntry entry;
+ bool found = FALSE;
+
+ silc_hash_table_list(server->watcher_list, &htl);
+ while (silc_hash_table_get(&htl, &key, (void **)&entry)) {
+ if (entry == client) {
+ silc_hash_table_del_by_context(server->watcher_list, key, client);
+
+ if (client->id)
+ SILC_LOG_DEBUG(("Removing %s from WATCH list",
+ silc_id_render(client->id, SILC_ID_CLIENT)));
+
+ /* Now check whether there still exists entries with this key, if not
+ then free the key to not leak memory. */
+ if (!silc_hash_table_find(server->watcher_list, key, NULL, NULL))
+ silc_free(key);
+
+ found = TRUE;
+ }
+ }
+ silc_hash_table_list_reset(&htl);
+
+ return found;
+}
+
+/* Force the client indicated by `chl' to change the channel user mode
+ on channel indicated by `channel' to `forced_mode'. */
+
+bool silc_server_force_cumode_change(SilcServer server,
+ SilcSocketConnection sock,
+ SilcChannelEntry channel,
+ SilcChannelClientEntry chl,
+ SilcUInt32 forced_mode)
+{
+ SilcBuffer idp1, idp2;
+ unsigned char cumode[4];
+
+ SILC_LOG_DEBUG(("Enforcing sender to change mode"));
+
+ if (sock)
+ silc_server_send_notify_cumode(server, sock, FALSE, channel, forced_mode,
+ server->id, SILC_ID_SERVER,
+ chl->client->id, NULL);
+
+ idp1 = silc_id_payload_encode(server->id, SILC_ID_SERVER);
+ idp2 = silc_id_payload_encode(chl->client->id, SILC_ID_CLIENT);
+ SILC_PUT32_MSB(forced_mode, cumode);
+ silc_server_send_notify_to_channel(server, sock, channel, FALSE,
+ SILC_NOTIFY_TYPE_CUMODE_CHANGE,
+ 3, idp1->data, idp1->len,
+ cumode, sizeof(cumode),
+ idp2->data, idp2->len);
+ silc_buffer_free(idp1);
+ silc_buffer_free(idp2);
+
+ return TRUE;
+}
projects / silc.git / blobdiff