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;
-
- SILC_LOG_DEBUG(("Start"));
+ SilcChannelClientEntry chl, chl2;
+ SilcHashTableList htl, htl2;
- if (!client || !client->id)
+ if (!client)
return;
- clidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
+ SILC_LOG_DEBUG(("Remove client %s from all channels",
+ client->nickname ? client->nickname :
+ (unsigned char *)""));
+
+ 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. */
silc_hash_table_list(client->channels, &htl);
- while (silc_hash_table_get(&htl, NULL, (void *)&chl)) {
+ 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 */
- if (server->server_type == SILC_ROUTER &&
+ /* Remove channel if this is last client leaving the channel, unless
+ the channel is permanent. */
+ if (server->server_type != SILC_SERVER &&
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--;
/* If there is no global users on the channel anymore mark the channel
as local channel. Do not check if the removed client is local client. */
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. */
- if (server->server_type != SILC_ROUTER &&
+ need the channel entry anymore, we can remove it safely, unless the
+ channel is permanent channel */
+ if (server->server_type == SILC_SERVER &&
!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);
- 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'.
- This is called when the connection is lost to the server. In this case
- we must invalidate all the client entries owned by the server `entry'.
- If the `server_signoff' is TRUE then the SERVER_SIGNOFF notify is
+/* This function removes all client entries that are originated from
+ `router' and are owned by `entry'. `router' and `entry' can be same
+ too. If `server_signoff' is TRUE then SERVER_SIGNOFF notify is
distributed to our local clients. */
-bool silc_server_remove_clients_by_server(SilcServer server,
+bool silc_server_remove_clients_by_server(SilcServer server,
+ SilcServerEntry router,
SilcServerEntry entry,
bool server_signoff)
{
SilcIDCacheEntry id_cache = NULL;
SilcClientEntry client = NULL;
SilcBuffer idp;
- SilcClientEntry *clients = NULL;
- uint32 clients_c = 0;
unsigned char **argv = NULL;
- uint32 *argv_lens = NULL, *argv_types = NULL, argc = 0;
+ SilcUInt32 *argv_lens = NULL, *argv_types = NULL, argc = 0;
SilcHashTableList htl;
SilcChannelEntry channel;
- SilcHashTable channels;
+ SilcHashTable channels, clients;
int i;
- SILC_LOG_DEBUG(("Start"));
+ if (!(entry->data.status & SILC_IDLIST_STATUS_REGISTERED))
+ return FALSE;
+
+ SILC_LOG_DEBUG(("Removing clients by %s",
+ entry->server_name ? entry->server_name : "server"));
+
+ if (!router)
+ router = entry;
/* Allocate the hash table that holds the channels that require
channel key re-generation after we've removed this server's clients
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 (silc_idcache_get_all(server->local_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 (!silc_idcache_list_next(list, &id_cache))
- break;
- else
- continue;
- }
-
- if (client->router != entry) {
- if (server_signoff) {
- clients = silc_realloc(clients,
- sizeof(*clients) * (clients_c + 1));
- clients[clients_c] = client;
- clients_c++;
- }
+ /* If client is not registered, is not originated from `router'
+ and is not owned by `entry', skip it. */
+ if (!(client->data.status & SILC_IDLIST_STATUS_REGISTERED) ||
+ client->router != router ||
+ (router != entry && !SILC_ID_COMPARE(client->id, entry->id,
+ client->id->ip.data_len))) {
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;
} else {
+ silc_idlist_del_data(client);
silc_idlist_del_client(server->local_list, client);
}
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 (!silc_idcache_list_next(list, &id_cache))
- break;
- else
- continue;
- }
-
- 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 client is not registered, is not originated from `router'
+ and is not owned by `entry', skip it. */
+ if (!(client->data.status & SILC_IDLIST_STATUS_REGISTERED) ||
+ client->router != router ||
+ (router != entry && !SILC_ID_COMPARE(client->id, entry->id,
+ client->id->ip.data_len))) {
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;
} else {
+ silc_idlist_del_data(client);
silc_idlist_del_client(server->global_list, client);
}
silc_idcache_list_free(list);
}
+ /* Return now if we are shutting down */
+ if (server->server_shutdown) {
+ silc_hash_table_free(channels);
+
+ if (server_signoff) {
+ for (i = 0; i < argc; i++)
+ silc_free(argv[i]);
+ silc_free(argv);
+ silc_free(argv_lens);
+ silc_free(argv_types);
+ silc_hash_table_free(clients);
+ }
+ return TRUE;
+ }
+
/* Send the SERVER_SIGNOFF notify */
if (server_signoff) {
SilcBuffer args, not;
+ SILC_LOG_DEBUG(("Sending SERVER_SIGNOFF for %s with %d clients",
+ silc_id_render(entry->id, SILC_ID_SERVER), 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);
+ /* Send notify also to local backup routers */
+ silc_server_backup_send(server, NULL, SILC_PACKET_NOTIFY, 0,
+ not->data, not->len, FALSE, TRUE);
+
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
this server's client(s) on the channel. As they left the channel we
must re-generate the channel key. */
silc_hash_table_list(channels, &htl);
- while (silc_hash_table_get(&htl, NULL, (void *)&channel)) {
+ while (silc_hash_table_get(&htl, NULL, (void **)&channel)) {
if (!silc_server_create_channel_key(server, channel, 0)) {
silc_hash_table_list_reset(&htl);
silc_hash_table_free(channels);
}
/* Do not send the channel key if private channel key mode is set */
- if (channel->mode & SILC_CHANNEL_MODE_PRIVKEY)
+ if (channel->mode & SILC_CHANNEL_MODE_PRIVKEY || !channel->channel_key)
continue;
silc_server_send_channel_key(server, NULL, channel,
static SilcServerEntry
silc_server_update_clients_by_real_server(SilcServer server,
SilcServerEntry from,
+ SilcServerEntry to,
SilcClientEntry client,
bool local,
SilcIDCacheEntry client_cache)
SilcServerEntry server_entry;
SilcIDCacheEntry id_cache = NULL;
SilcIDCacheList list;
+ bool tolocal = (to == server->id_entry);
if (!silc_idcache_get_all(server->local_list->servers, &list))
return NULL;
while (id_cache) {
server_entry = (SilcServerEntry)id_cache->context;
if (server_entry != from &&
+ (tolocal || server_entry != server->id_entry) &&
SILC_ID_COMPARE(server_entry->id, client->id,
client->id->ip.data_len)) {
SILC_LOG_DEBUG(("Found (local) %s",
if (silc_idcache_list_first(list, &id_cache)) {
while (id_cache) {
server_entry = (SilcServerEntry)id_cache->context;
- if (server_entry != from &&
+ if (server_entry != from && server_entry != server->id_entry &&
+ (tolocal || server_entry != server->id_entry) &&
SILC_ID_COMPARE(server_entry->id, client->id,
client->id->ip.data_len)) {
SILC_LOG_DEBUG(("Found (global) %s",
if (local) {
SILC_LOG_DEBUG(("Moving client to global list"));
silc_idcache_add(server->global_list->clients, client_cache->name,
- client_cache->id, client_cache->context,
- client_cache->expire, NULL);
+ client_cache->id, client_cache->context, 0, NULL);
silc_idcache_del_by_context(server->local_list->clients, client);
}
server_entry = server_entry->router;
if (server_entry->server_type != SILC_BACKUP_ROUTER && local) {
SILC_LOG_DEBUG(("Moving client to global list"));
silc_idcache_add(server->global_list->clients, client_cache->name,
- client_cache->id, client_cache->context,
- client_cache->expire, NULL);
+ client_cache->id, client_cache->context, 0, NULL);
silc_idcache_del_by_context(server->local_list->clients, client);
}
}
attempt to figure out which clients really are originated from the
`from' and which are originated from a server that we have connection
to, when we've acting as backup router. If it is FALSE the `to' will
- be the new source. This function also removes the clients that are
- *really* originated from `from' if `remove_from' is TRUE. These are
- clients that the `from' owns, and not just clients that are behind
- the `from'. */
+ be the new source. */
void silc_server_update_clients_by_server(SilcServer server,
SilcServerEntry from,
SilcServerEntry to,
- bool resolve_real_server,
- bool remove_from)
+ bool resolve_real_server)
{
SilcIDCacheList list = NULL;
SilcIDCacheEntry id_cache = NULL;
SilcClientEntry client = NULL;
bool local;
- 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)));
-
-
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
continue;
}
- SILC_LOG_DEBUG(("Client (global) %s",
+ SILC_LOG_DEBUG(("Client %s",
silc_id_render(client->id, SILC_ID_CLIENT)));
if (client->router)
- SILC_LOG_DEBUG(("Client->router (global) %s",
+ SILC_LOG_DEBUG(("Client->router %s",
silc_id_render(client->router->id, SILC_ID_SERVER)));
- if (client->router == from) {
- /* Skip clients that are *really* owned by the `from' */
- if (remove_from && SILC_ID_COMPARE(from->id, client->id,
- client->id->ip.data_len)) {
- SILC_LOG_DEBUG(("Found really owned client, skip it"));
- if (!silc_idcache_list_next(list, &id_cache))
- break;
- else
- continue;
- }
-
- if (resolve_real_server) {
- client->router =
- silc_server_update_clients_by_real_server(server, from, client,
- local, id_cache);
- if (!client->router)
+ if (from) {
+ if (client->router == from) {
+ if (resolve_real_server) {
+ client->router =
+ silc_server_update_clients_by_real_server(server, from, to,
+ client, local,
+ id_cache);
+ if (!client->router) {
+ if (server->server_type == SILC_ROUTER)
+ client->router = from;
+ else
+ client->router = to;
+ }
+ } else {
client->router = to;
- } else {
- client->router = to;
+ }
}
+ } else {
+ /* All are changed */
+ client->router = to;
}
+ if (client->router)
+ SILC_LOG_DEBUG(("Client changed to %s",
+ silc_id_render(client->router->id, SILC_ID_SERVER)));
+
if (!silc_idcache_list_next(list, &id_cache))
break;
}
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
continue;
}
- SILC_LOG_DEBUG(("Client (local) %s",
+ SILC_LOG_DEBUG(("Client %s",
silc_id_render(client->id, SILC_ID_CLIENT)));
if (client->router)
- SILC_LOG_DEBUG(("Client->router (local) %s",
+ SILC_LOG_DEBUG(("Client->router %s",
silc_id_render(client->router->id, SILC_ID_SERVER)));
- if (client->router == from) {
- /* Skip clients that are *really* owned by the `from' */
- if (remove_from && SILC_ID_COMPARE(from->id, client->id,
- client->id->ip.data_len)) {
- SILC_LOG_DEBUG(("Found really owned client, skip it"));
- if (!silc_idcache_list_next(list, &id_cache))
- break;
- else
- continue;
- }
-
- if (resolve_real_server) {
- client->router =
- silc_server_update_clients_by_real_server(server, from, client,
- local, id_cache);
- if (!client->router)
- client->router = from; /* on local list put old from */
- } else {
- client->router = to;
+ if (from) {
+ if (client->router == from) {
+ if (resolve_real_server) {
+ client->router =
+ silc_server_update_clients_by_real_server(server, from, to,
+ client, local,
+ id_cache);
+ if (!client->router)
+ client->router = from;
+ } else {
+ client->router = to;
+ }
}
+ } else {
+ /* All are changed */
+ client->router = to;
}
+ if (client->router)
+ SILC_LOG_DEBUG(("Client changed to %s",
+ silc_id_render(client->router->id, SILC_ID_SERVER)));
+
if (!silc_idcache_list_next(list, &id_cache))
break;
}
}
silc_idcache_list_free(list);
}
-
- if (remove_from)
- /* Now remove the clients that are still marked as orignated from the
- `from'. These are the clients that really was owned by the `from' and
- not just exist behind the `from'. */
- silc_server_remove_clients_by_server(server, from, TRUE);
}
/* Updates servers that are from `from' to be originated from `to'. This
SilcIDCacheEntry id_cache = NULL;
SilcServerEntry server_entry = NULL;
- SILC_LOG_DEBUG(("Start"));
+ SILC_LOG_DEBUG(("Updating servers"));
+
+ 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 entry is local to us, do not switch it to any anyone else,
+ it is ours. */
+ if (SILC_IS_LOCAL(server_entry) || server_entry == server->id_entry ||
+ server_entry == from) {
+ if (!silc_idcache_list_next(list, &id_cache))
+ break;
+ else
+ continue;
+ }
+
+ /* If we are standalone router, any server that is not directly
+ connected to cannot exist anymore. If we are not standalone
+ we update it correctly. */
+ if (server->server_type == SILC_ROUTER && server->standalone) {
+ silc_server_backup_del(server, server_entry);
+ silc_server_backup_replaced_del(server, server_entry);
+ silc_idlist_del_data(server_entry);
+ silc_idlist_del_server(server->local_list, server_entry);
+ server->stat.servers--;
+ server->stat.cell_servers--;
+ } else {
+ /* XXX if we are not standalone, do a check from local config
+ whether this server is in our cell, but not connected to
+ us (in which case we must remove it). */
+
+ 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;
+ }
+ }
+ silc_idcache_list_free(list);
+ }
+
+ if (silc_idcache_get_all(server->global_list->servers, &list)) {
+ if (silc_idcache_list_first(list, &id_cache)) {
+ while (id_cache) {
+ server_entry = (SilcServerEntry)id_cache->context;
+
+ /* If entry is local to us, do not switch it to anyone else,
+ it is ours. */
+ if (SILC_IS_LOCAL(server_entry) || server_entry == server->id_entry ||
+ server_entry == from) {
+ if (!silc_idcache_list_next(list, &id_cache))
+ break;
+ else
+ continue;
+ }
+
+ /* If we are standalone router, any server that is not directly
+ connected to cannot exist anymore. If we are not standalone
+ we update it correctly. */
+ if (server->server_type == SILC_ROUTER && server->standalone) {
+ silc_server_backup_del(server, server_entry);
+ silc_server_backup_replaced_del(server, server_entry);
+ silc_idlist_del_data(server_entry);
+ silc_idlist_del_server(server->global_list, server_entry);
+ server->stat.servers--;
+ server->stat.cell_servers--;
+ } else {
+ /* XXX if we are not standalone, do a check from local config
+ whether this server is in our cell, but not connected to
+ us (in which case we must remove it). */
+
+ 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;
+ }
+ }
+ silc_idcache_list_free(list);
+ }
+}
+
+
+/* Toggles the enabled/disabled status of local server connections. Packets
+ can be sent to the servers when `toggle_enabled' is TRUE and will be
+ dropped if `toggle_enabled' is FALSE, after this function is called. */
+
+void silc_server_local_servers_toggle_enabled(SilcServer server,
+ bool toggle_enabled)
+{
+ SilcIDCacheList list = NULL;
+ SilcIDCacheEntry id_cache = NULL;
+ SilcServerEntry server_entry = NULL;
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 (server_entry->router == from) {
- server_entry->router = to;
- server_entry->connection = to->connection;
+ if (!SILC_IS_LOCAL(server_entry) || server_entry == server->id_entry) {
+ if (!silc_idcache_list_next(list, &id_cache))
+ break;
+ else
+ continue;
}
+
+ if (toggle_enabled)
+ server_entry->data.status &= ~SILC_IDLIST_STATUS_DISABLED;
+ else
+ server_entry->data.status |= SILC_IDLIST_STATUS_DISABLED;
+
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 (server_entry->router == from) {
- server_entry->router = to;
- server_entry->connection = to->connection;
+ if (!SILC_IS_LOCAL(server_entry) || server_entry == server->id_entry) {
+ if (!silc_idcache_list_next(list, &id_cache))
+ break;
+ else
+ continue;
}
+
+ if (toggle_enabled)
+ server_entry->data.status &= ~SILC_IDLIST_STATUS_DISABLED;
+ else
+ server_entry->data.status |= SILC_IDLIST_STATUS_DISABLED;
+
+ if (!silc_idcache_list_next(list, &id_cache))
+ break;
+ }
+ }
+ silc_idcache_list_free(list);
+ }
+}
+
+/* Removes servers that are originated from the `from'. The server
+ entry is deleted in this function. If `remove_clients' is TRUE then
+ all clients originated from the server are removed too, and server
+ signoff is sent. Note that this does not remove the `from'. This
+ also does not remove locally connected servers. */
+
+void silc_server_remove_servers_by_server(SilcServer server,
+ SilcServerEntry from,
+ bool remove_clients)
+{
+ SilcIDCacheList list = NULL;
+ SilcIDCacheEntry id_cache = NULL;
+ SilcServerEntry server_entry = NULL;
+
+ SILC_LOG_DEBUG(("Removing servers by %s",
+ from->server_name ? from->server_name : "server"));
+
+ 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) || server_entry == server->id_entry ||
+ server_entry->router != from || server_entry == from) {
+ if (!silc_idcache_list_next(list, &id_cache))
+ break;
+ else
+ continue;
+ }
+
+ /* Remove clients owned by this server */
+ if (remove_clients)
+ silc_server_remove_clients_by_server(server, from, server_entry,
+ TRUE);
+
+ /* Remove the server */
+ silc_idlist_del_server(server->local_list, server_entry);
+
+ if (!silc_idcache_list_next(list, &id_cache))
+ break;
+ }
+ }
+ silc_idcache_list_free(list);
+ }
+
+ if (silc_idcache_get_all(server->global_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) || server_entry == server->id_entry ||
+ server_entry->router != from || server_entry == from) {
+ if (!silc_idcache_list_next(list, &id_cache))
+ break;
+ else
+ continue;
+ }
+
+ /* Remove clients owned by this server */
+ if (remove_clients)
+ silc_server_remove_clients_by_server(server, from, server_entry,
+ TRUE);
+
+ /* Remove the server */
+ silc_idlist_del_server(server->global_list, server_entry);
+
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)) {
SilcHashTableList htl;
silc_hash_table_list(channel->user_list, &htl);
- while (silc_hash_table_get(&htl, NULL, (void *)&chl)) {
+ while (silc_hash_table_get(&htl, NULL, (void **)&chl)) {
if (chl->client->router) {
silc_hash_table_list_reset(&htl);
return TRUE;
SilcHashTableList htl;
silc_hash_table_list(channel->user_list, &htl);
- while (silc_hash_table_get(&htl, NULL, (void *)&chl)) {
- if (!chl->client->router) {
+ while (silc_hash_table_get(&htl, NULL, (void **)&chl)) {
+ if (SILC_IS_LOCAL(chl->client)) {
silc_hash_table_list_reset(&htl);
return TRUE;
}
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) {
+ /* 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
`client' which is faster than checking the user list from `channel'. */
bool silc_server_client_on_channel(SilcClientEntry client,
- SilcChannelEntry channel)
+ SilcChannelEntry channel,
+ SilcChannelClientEntry *chl)
{
if (!client || !channel)
return FALSE;
- return silc_hash_table_find(client->channels, channel, NULL, NULL);
+ return silc_hash_table_find(client->channels, channel, NULL,
+ (void **)chl);
}
/* Checks string for bad characters and returns TRUE if they are found. */
-bool silc_server_name_bad_chars(const char *name, uint32 name_len)
+bool silc_server_name_bad_chars(const char *name, SilcUInt32 name_len)
{
int i;
/* Modifies the `name' if it includes bad characters and returns new
allocated name that does not include bad characters. */
-char *silc_server_name_modify_bad(const char *name, uint32 name_len)
+char *silc_server_name_modify_bad(const char *name, SilcUInt32 name_len)
{
int i;
char *newname = strdup(name);
/* Find number of sockets by IP address indicated by `ip'. Returns 0 if
socket connections with the IP address does not exist. */
-uint32 silc_server_num_sockets_by_ip(SilcServer server, const char *ip)
+SilcUInt32 silc_server_num_sockets_by_ip(SilcServer server, const char *ip,
+ SilcSocketType type)
{
int i, count;
for (i = 0, count = 0; i < server->config->param.connections_max; i++) {
- if (server->sockets[i] && !strcmp(server->sockets[i]->ip, ip))
+ if (server->sockets[i] && !SILC_IS_LISTENER(server->sockets[i]) &&
+ !strcmp(server->sockets[i]->ip, ip) &&
+ server->sockets[i]->type == type)
count++;
}
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] && !SILC_IS_LISTENER(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
+ if we do not find the public key. */
+
+SilcPublicKey silc_server_find_public_key(SilcServer server,
+ SilcHashTable local_public_keys,
+ SilcPublicKey remote_public_key)
+{
+ SilcPublicKey cached_key;
+
+ SILC_LOG_DEBUG(("Find remote public key (%d keys in local cache)",
+ silc_hash_table_count(local_public_keys)));
+
+ if (!silc_hash_table_find_ext(local_public_keys, remote_public_key,
+ (void **)&cached_key, NULL,
+ silc_hash_public_key, NULL,
+ silc_hash_public_key_compare, NULL)) {
+ SILC_LOG_ERROR(("Public key not found"));
+ return NULL;
+ }
+
+ SILC_LOG_DEBUG(("Found public key"));
+
+ return cached_key;
+}
+
+/* This returns the first public key from the table of public keys. This
+ is used only in cases where single public key exists in the table and
+ we want to get a pointer to it. For public key tables that has multiple
+ keys in it the silc_server_find_public_key must be used. */
+
+SilcPublicKey silc_server_get_public_key(SilcServer server,
+ SilcHashTable local_public_keys)
+{
+ SilcPublicKey cached_key;
+ SilcHashTableList htl;
+
+ SILC_LOG_DEBUG(("Start"));
+
+ assert(silc_hash_table_count(local_public_keys) < 2);
+
+ silc_hash_table_list(local_public_keys, &htl);
+ if (!silc_hash_table_get(&htl, NULL, (void **)&cached_key))
+ return NULL;
+ silc_hash_table_list_reset(&htl);
+
+ return cached_key;
+}
+
+/* Check whether the connection `sock' is allowed to connect to us. This
+ checks for example whether there is too much connections for this host,
+ and required version for the host etc. */
+
+bool silc_server_connection_allowed(SilcServer server,
+ SilcSocketConnection sock,
+ SilcSocketType type,
+ SilcServerConfigConnParams *global,
+ SilcServerConfigConnParams *params,
+ SilcSKE ske)
+{
+ SilcUInt32 conn_number = (type == SILC_SOCKET_TYPE_CLIENT ?
+ server->stat.my_clients :
+ type == SILC_SOCKET_TYPE_SERVER ?
+ server->stat.my_servers :
+ server->stat.my_routers);
+ SilcUInt32 num_sockets, max_hosts, max_per_host;
+ SilcUInt32 r_protocol_version, l_protocol_version;
+ 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 =
+ silc_version_to_num(params && params->version_protocol ?
+ params->version_protocol :
+ global->version_protocol);
+ l_software_version =
+ silc_version_to_num(params && params->version_software ?
+ params->version_software :
+ global->version_software);
+ l_vendor_version = (params && params->version_software_vendor ?
+ params->version_software_vendor :
+ global->version_software_vendor);
+
+ 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,
+ SILC_STATUS_ERR_BAD_VERSION,
+ "You support too old protocol version");
+ return FALSE;
+ }
+
+ /* Math software version */
+ if (l_software_version && r_software_version &&
+ r_software_version < l_software_version) {
+ SILC_LOG_INFO(("Connection %s (%s) is too old version",
+ sock->hostname, sock->ip));
+ silc_server_disconnect_remote(server, sock,
+ SILC_STATUS_ERR_BAD_VERSION,
+ "You support too old software version");
+ return FALSE;
+ }
+
+ /* Regex match vendor version */
+ if (l_vendor_version && r_vendor_version &&
+ !silc_string_match(l_vendor_version, r_vendor_version)) {
+ SILC_LOG_INFO(("Connection %s (%s) is unsupported version",
+ sock->hostname, sock->ip));
+ silc_server_disconnect_remote(server, sock,
+ SILC_STATUS_ERR_BAD_VERSION,
+ "Your software is not supported");
+ return FALSE;
+ }
+ }
+ silc_free(r_vendor_version);
+
+ /* Check for maximum connections limit */
+
+ num_sockets = silc_server_num_sockets_by_ip(server, sock->ip, type);
+ max_hosts = (params ? params->connections_max : global->connections_max);
+ max_per_host = (params ? params->connections_max_per_host :
+ global->connections_max_per_host);
+
+ if (max_hosts && conn_number >= max_hosts) {
+ SILC_LOG_INFO(("Server is full, closing %s (%s) connection",
+ sock->hostname, sock->ip));
+ silc_server_disconnect_remote(server, sock,
+ SILC_STATUS_ERR_RESOURCE_LIMIT,
+ "Server is full, try again later");
+ return FALSE;
+ }
+
+ if (num_sockets >= max_per_host) {
+ SILC_LOG_INFO(("Too many connections from %s (%s), closing connection",
+ sock->hostname, sock->ip));
+ silc_server_disconnect_remote(server, sock,
+ SILC_STATUS_ERR_RESOURCE_LIMIT,
+ "Too many connections from your host");
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+/* Checks that client has rights to add or remove channel modes. If any
+ of the checks fails FALSE is returned. */
+
+bool silc_server_check_cmode_rights(SilcServer server,
+ SilcChannelEntry channel,
+ SilcChannelClientEntry client,
+ SilcUInt32 mode)
+{
+ bool is_op = client->mode & SILC_CHANNEL_UMODE_CHANOP;
+ bool is_fo = client->mode & SILC_CHANNEL_UMODE_CHANFO;
+
+ /* Check whether has rights to change anything */
+ if (!is_op && !is_fo)
+ return FALSE;
+
+ /* Check whether has rights to change everything */
+ 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 (is_op && !is_fo)
+ return FALSE;
+ } else {
+ if (channel->mode & SILC_CHANNEL_MODE_PRIVKEY) {
+ if (is_op && !is_fo)
+ return FALSE;
+ }
+ }
+
+ if (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)
+ return FALSE;
+ }
+ }
+
+ if (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)
+ return FALSE;
+ }
+ }
+
+ if (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)
+ return FALSE;
+ }
+ }
+
+ 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;
+}
+
+/* Check that the client has rights to change its user mode. Returns
+ FALSE if setting some mode is not allowed. */
+
+bool silc_server_check_umode_rights(SilcServer server,
+ SilcClientEntry client,
+ SilcUInt32 mode)
+{
+ bool server_op = FALSE, router_op = FALSE;
+
+ if (mode & SILC_UMODE_SERVER_OPERATOR) {
+ /* Cannot set server operator mode (must use OPER command) */
+ if (!(client->mode & SILC_UMODE_SERVER_OPERATOR))
+ return FALSE;
+ } else {
+ /* Remove the server operator rights */
+ if (client->mode & SILC_UMODE_SERVER_OPERATOR)
+ server_op = TRUE;
+ }
+
+ if (mode & SILC_UMODE_ROUTER_OPERATOR) {
+ /* Cannot set router operator mode (must use SILCOPER command) */
+ if (!(client->mode & SILC_UMODE_ROUTER_OPERATOR))
+ return FALSE;
+ } else {
+ /* Remove the router operator rights */
+ if (client->mode & SILC_UMODE_ROUTER_OPERATOR)
+ router_op = TRUE;
+ }
+
+ if (server_op)
+ SILC_UMODE_STATS_UPDATE(server, SILC_UMODE_SERVER_OPERATOR);
+ if (router_op)
+ SILC_UMODE_STATS_UPDATE(router, SILC_UMODE_ROUTER_OPERATOR);
+
+ 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",
+ silc_cipher_get_name(idata->send_key),
+ silc_cipher_get_key_len(idata->send_key)));
+ 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, 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 */
+ silc_idlist_del_data(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 (!context)
+ return;
+
+ 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;
+}
+
+/* Find active socket connection by the IP address and port indicated by
+ `ip' and `port', and socket connection type of `type'. */
+
+SilcSocketConnection
+silc_server_find_socket_by_host(SilcServer server,
+ SilcSocketType type,
+ const char *ip, SilcUInt16 port)
+{
+ int i;
+
+ for (i = 0; i < server->config->param.connections_max; i++) {
+ if (!server->sockets[i])
+ continue;
+ if (!strcmp(server->sockets[i]->ip, ip) &&
+ (!port || server->sockets[i]->port == port) &&
+ server->sockets[i]->type == type)
+ return server->sockets[i];
+ }
+
+ return NULL;
+}
+
+/* This function can be used to match the invite and ban lists. */
+
+bool silc_server_inviteban_match(SilcServer server, SilcHashTable list,
+ SilcUInt8 type, void *check)
+{
+ unsigned char *tmp = NULL;
+ SilcUInt32 len = 0, t;
+ SilcHashTableList htl;
+ SilcBuffer entry, idp = NULL;
+ bool ret = FALSE;
+
+ if (type < 1 || type > 3 || !check)
+ return FALSE;
+
+ if (type == 1) {
+ tmp = strdup((char *)check);
+ if (!tmp)
+ return FALSE;
+ }
+ if (type == 2) {
+ tmp = silc_pkcs_public_key_encode(check, &len);
+ if (!tmp)
+ return FALSE;
+ }
+ if (type == 3) {
+ idp = silc_id_payload_encode(check, SILC_ID_CLIENT);
+ if (!idp)
+ return FALSE;
+ tmp = idp->data;
+ len = idp->len;
+ }
+
+ /* Compare the list */
+ silc_hash_table_list(list, &htl);
+ while (silc_hash_table_get(&htl, (void **)&t, (void **)&entry)) {
+ if (type == t) {
+ if (type == 1) {
+ if (silc_string_match((char *)entry, tmp)) {
+ ret = TRUE;
+ break;
+ }
+ } else if (!memcmp(entry->data, tmp, len)) {
+ ret = TRUE;
+ break;
+ }
+ }
+ }
+ silc_hash_table_list_reset(&htl);
+
+ if (!idp)
+ silc_free(tmp);
+ silc_buffer_free(idp);
+ return ret;
+}
+
+static void silc_server_inviteban_dummy_dest(void *key, void *context,
+ void *user_context)
+{
+ /* Nothing */
+}
+
+/* Process invite or ban information */
+
+void silc_server_inviteban_process(SilcServer server, SilcHashTable list,
+ SilcUInt8 action, SilcArgumentPayload args)
+{
+ unsigned char *tmp;
+ SilcUInt32 type, len;
+ SilcBuffer tmp2;
+ SilcHashTableList htl;
+
+ SILC_LOG_DEBUG(("Processing invite/ban for %s action",
+ action == 0x00 ? "ADD" : "DEL"));
+
+ /* Add the information to invite list */
+ if (action == 0x00) {
+ /* Traverse all arguments and add to the hash table according to
+ their type. */
+ tmp = silc_argument_get_first_arg(args, &type, &len);
+ while (tmp) {
+ if (type == 1) {
+ /* Invite string. Get the old invite string from hash table
+ and append this at the end of the existing one. */
+ char *string = NULL;
+ silc_hash_table_find(list, (void *)1,
+ NULL, (void **)&string);
+ silc_hash_table_del_ext(list, (void *)1, NULL, NULL, NULL, NULL,
+ silc_server_inviteban_dummy_dest, NULL);
+ if (!string)
+ string = silc_calloc(len + 2, sizeof(*string));
+ else
+ string = silc_realloc(string, sizeof(*string) *
+ (strlen(string) + len + 2));
+ memset(string + strlen(string), 0, len + 2);
+ if (tmp[len - 1] == ',')
+ tmp[len - 1] = '\0';
+ strncat(string, tmp, len);
+ strncat(string, ",", 1);
+
+ /* Add new invite string to invite list */
+ silc_hash_table_add(list, (void *)1, string);
+
+ } else if (type == 2) {
+ /* Public key. Check first if the public key is already on the
+ list and ignore it if it is, otherwise, add it to hash table. */
+
+ /* Check if the public key is in the list already */
+ silc_hash_table_list(list, &htl);
+ while (silc_hash_table_get(&htl, (void **)&type, (void **)&tmp2)) {
+ if (type == 2 && !memcmp(tmp2->data, tmp, len)) {
+ tmp = NULL;
+ break;
+ }
+ }
+ silc_hash_table_list_reset(&htl);
+
+ /* Add new public key to invite list */
+ if (tmp) {
+ tmp2 = silc_buffer_alloc_size(len);
+ silc_buffer_put(tmp2, tmp, len);
+ silc_hash_table_add(list, (void *)2, tmp2);
+ }
+
+ } else if (type == 3) {
+ /* Client ID */
+
+ /* Check if the ID is in the list already */
+ silc_hash_table_list(list, &htl);
+ while (silc_hash_table_get(&htl, (void **)&type, (void **)&tmp2)) {
+ if (type == 3 && !memcmp(tmp2->data, tmp, len)) {
+ tmp = NULL;
+ break;
+ }
+ }
+ silc_hash_table_list_reset(&htl);
+
+ /* Add new Client ID to invite list */
+ if (tmp) {
+ tmp2 = silc_buffer_alloc_size(len);
+ silc_buffer_put(tmp2, tmp, len);
+ silc_hash_table_add(list, (void *)3, tmp2);
+ }
+ }
+
+ tmp = silc_argument_get_next_arg(args, &type, &len);
+ }
+ }
+
+ /* Delete information to invite list */
+ if (action == 0x01 && list) {
+ /* Now delete the arguments from invite list */
+ tmp = silc_argument_get_first_arg(args, &type, &len);
+ while (tmp) {
+ if (type == 1) {
+ /* Invite string. Get the old string from hash table and delete
+ the requested string. */
+ char *string = NULL, *start, *end, *n;
+
+ if (silc_hash_table_find(list, (void *)1, NULL, (void **)&string)) {
+ if (!strncmp(string, tmp, strlen(string) - 1)) {
+ silc_hash_table_del(list, (void *)1);
+ string = NULL;
+ } else {
+ start = strstr(string, tmp);
+ if (start && strlen(start) >= len) {
+ end = start + len;
+ n = silc_calloc(strlen(string) - len, sizeof(*n));
+ strncat(n, string, start - string);
+ strncat(n, end + 1, ((string + strlen(string)) - end) - 1);
+ silc_hash_table_del(list, (void *)1);
+ string = n;
+ }
+ }
+
+ /* Add new invite string to invite list */
+ if (string)
+ silc_hash_table_add(list, (void *)1, string);
+ }
+
+ } else if (type == 2) {
+ /* Public key. */
+
+ /* Delete from the invite list */
+ silc_hash_table_list(list, &htl);
+ while (silc_hash_table_get(&htl, (void **)&type, (void **)&tmp2)) {
+ if (type == 2 && !memcmp(tmp2->data, tmp, len)) {
+ silc_hash_table_del_by_context(list, (void *)2, tmp2);
+ break;
+ }
+ }
+ silc_hash_table_list_reset(&htl);
+
+ } else if (type == 3) {
+ /* Client ID */
+
+ /* Delete from the invite list */
+ silc_hash_table_list(list, &htl);
+ while (silc_hash_table_get(&htl, (void **)&type, (void **)&tmp2)) {
+ if (type == 3 && !memcmp(tmp2->data, tmp, len)) {
+ silc_hash_table_del_by_context(list, (void *)3, tmp2);
+ break;
+ }
+ }
+ silc_hash_table_list_reset(&htl);
+ }
+
+ tmp = silc_argument_get_next_arg(args, &type, &len);
+ }
+ }
+}
+
+/* Destructor for invite or ban list entrys */
+
+void silc_server_inviteban_destruct(void *key, void *context,
+ void *user_context)
+{
+ switch ((SilcUInt32)key) {
+ case 1:
+ /* Invite string */
+ silc_free(context);
+ break;
+ case 2:
+ case 3:
+ /* Public key/Channel ID SilcBuffer */
+ silc_buffer_free(context);
+ break;
+ default:
+ break;
+ }
+}
projects / silc.git / blobdiff