Author: Pekka Riikonen <priikone@silcnet.org>
- Copyright (C) 1997 - 2001 Pekka Riikonen
+ Copyright (C) 1997 - 2008 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
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
+ the Free Software Foundation; version 2 of the License.
+
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
*/
-/*
- * This is the actual SILC server than handles everything relating to
- * servicing the SILC connections. This is also a SILC router as a router
- * is also normal server.
- */
-/* $Id$ */
#include "serverincludes.h"
#include "server_internal.h"
-/* Static prototypes */
-SILC_TASK_CALLBACK(silc_server_connect_router);
-SILC_TASK_CALLBACK(silc_server_connect_to_router);
-SILC_TASK_CALLBACK(silc_server_connect_to_router_second);
-SILC_TASK_CALLBACK(silc_server_connect_to_router_final);
-SILC_TASK_CALLBACK(silc_server_accept_new_connection);
-SILC_TASK_CALLBACK(silc_server_accept_new_connection_second);
-SILC_TASK_CALLBACK(silc_server_accept_new_connection_final);
-SILC_TASK_CALLBACK(silc_server_packet_process);
-SILC_TASK_CALLBACK(silc_server_packet_parse_real);
-SILC_TASK_CALLBACK(silc_server_timeout_remote);
-SILC_TASK_CALLBACK(silc_server_failure_callback);
-SILC_TASK_CALLBACK(silc_server_rekey_callback);
-
-/* Allocates a new SILC server object. This has to be done before the server
- can be used. After allocation one must call silc_server_init to initialize
- the server. The new allocated server object is returned to the new_server
- argument. */
+/************************* Types and definitions ****************************/
-int silc_server_alloc(SilcServer *new_server)
+SILC_TASK_CALLBACK(silc_server_get_stats);
+SILC_TASK_CALLBACK(silc_server_connect_router);
+SILC_TASK_CALLBACK(silc_server_connect_to_router_retry);
+SILC_TASK_CALLBACK(silc_server_do_rekey);
+SILC_TASK_CALLBACK(silc_server_purge_expired_clients);
+static void silc_server_accept_new_connection(SilcNetStatus status,
+ SilcStream stream,
+ void *context);
+static void silc_server_packet_parse_type(SilcServer server,
+ SilcPacketStream sock,
+ SilcPacket packet);
+static void silc_server_rekey(SilcServer server, SilcPacketStream sock,
+ SilcPacket packet);
+
+
+/************************ Static utility functions **************************/
+
+/* SKE public key verification callback */
+
+static void
+silc_server_verify_key(SilcSKE ske,
+ SilcPublicKey public_key,
+ void *context,
+ SilcSKEVerifyCbCompletion completion,
+ void *completion_context)
{
- SilcServer server;
-
- SILC_LOG_DEBUG(("Allocating new server object"));
+ SilcPacketStream sock = context;
+ SilcUnknownEntry entry = silc_packet_get_context(sock);
- server = silc_calloc(1, sizeof(*server));
- server->server_type = SILC_SERVER;
- server->standalone = TRUE;
- server->local_list = silc_calloc(1, sizeof(*server->local_list));
- server->global_list = silc_calloc(1, sizeof(*server->global_list));
- server->pending_commands = silc_dlist_init();
-#ifdef SILC_SIM
- server->sim = silc_dlist_init();
-#endif
+ SILC_LOG_DEBUG(("Verifying public key"));
- *new_server = server;
+ if (silc_pkcs_get_type(public_key) != SILC_SKE_PK_TYPE_SILC) {
+ SILC_LOG_WARNING(("We don't support %s (%s) port %d public key type %d",
+ entry->hostname, entry->ip, entry->port,
+ silc_pkcs_get_type(public_key)));
+ completion(ske, SILC_SKE_STATUS_UNSUPPORTED_PUBLIC_KEY,
+ completion_context);
+ return;
+ }
- return TRUE;
+ /* We accept all keys without explicit verification */
+ completion(ske, SILC_SKE_STATUS_OK, completion_context);
}
-/* Free's the SILC server object. This is called at the very end before
- the program ends. */
-
-void silc_server_free(SilcServer server)
-{
- if (server) {
-#ifdef SILC_SIM
- SilcSimContext *sim;
-#endif
-
- silc_free(server->local_list);
- silc_free(server->global_list);
- if (server->rng)
- silc_rng_free(server->rng);
-
- if (server->pkcs)
- silc_pkcs_free(server->pkcs);
-
-#ifdef SILC_SIM
- while ((sim = silc_dlist_get(server->sim)) != SILC_LIST_END) {
- silc_dlist_del(server->sim, sim);
- silc_sim_free(sim);
- }
- silc_dlist_uninit(server->sim);
-#endif
-
- silc_free(server->params);
-
- if (server->pending_commands)
- silc_dlist_uninit(server->pending_commands);
- silc_free(server);
- }
-}
+/************************ Packet engine callbacks ***************************/
-/* Initializes the entire SILC server. This is called always before running
- the server. This is called only once at the initialization of the program.
- This binds the server to its listenning port. After this function returns
- one should call silc_server_run to start the server. This returns TRUE
- when everything is ok to run the server. Configuration file must be
- read and parsed before calling this. */
+/* Packet engine callback to receive a packet */
-int silc_server_init(SilcServer server)
+static SilcBool silc_server_packet_receive(SilcPacketEngine engine,
+ SilcPacketStream stream,
+ SilcPacket packet,
+ void *callback_context,
+ void *stream_context)
{
- int *sock = NULL, sock_count, i;
- SilcServerID *id;
- SilcServerEntry id_entry;
- SilcIDListPurge purge;
- SilcServerConfigSectionListenPort *listen;
+ SilcServer server = callback_context;
+ SilcIDListData idata = stream_context;
- SILC_LOG_DEBUG(("Initializing server"));
- assert(server);
- assert(server->config);
-
- /* Set public and private keys */
- if (!server->config->server_keys ||
- !server->config->server_keys->public_key ||
- !server->config->server_keys->private_key) {
- SILC_LOG_ERROR(("Server public key and/or private key does not exist"));
+ if (!idata)
return FALSE;
- }
- server->public_key = server->config->server_keys->public_key;
- server->private_key = server->config->server_keys->private_key;
-
- /* XXX After server is made as Silc Server Library this can be given
- as argument, for now this is hard coded */
- server->params = silc_calloc(1, sizeof(*server->params));
- server->params->retry_count = SILC_SERVER_RETRY_COUNT;
- server->params->retry_interval_min = SILC_SERVER_RETRY_INTERVAL_MIN;
- server->params->retry_interval_max = SILC_SERVER_RETRY_INTERVAL_MAX;
- server->params->retry_keep_trying = FALSE;
- server->params->protocol_timeout = 60;
- server->params->require_reverse_mapping = FALSE;
-
- /* Set log files where log message should be saved. */
- server->config->server = server;
- silc_server_config_setlogfiles(server->config);
-
- /* Register all configured ciphers, PKCS and hash functions. */
- if (!silc_server_config_register_ciphers(server->config))
- silc_cipher_register_default();
- if (!silc_server_config_register_pkcs(server->config))
- silc_pkcs_register_default();
- if (!silc_server_config_register_hashfuncs(server->config))
- silc_hash_register_default();
- if (!silc_server_config_register_hmacs(server->config))
- silc_hmac_register_default();
-
- /* Initialize random number generator for the server. */
- server->rng = silc_rng_alloc();
- silc_rng_init(server->rng);
- silc_rng_global_init(server->rng);
- /* Initialize hash functions for server to use */
- silc_hash_alloc("md5", &server->md5hash);
- silc_hash_alloc("sha1", &server->sha1hash);
-
- /* Initialize none cipher */
- silc_cipher_alloc("none", &server->none_cipher);
-
- /* Allocate PKCS context for local public and private keys */
- silc_pkcs_alloc(server->public_key->name, &server->pkcs);
- silc_pkcs_public_key_set(server->pkcs, server->public_key);
- silc_pkcs_private_key_set(server->pkcs, server->private_key);
-
- /* Create a listening server. Note that our server can listen on multiple
- ports. All listeners are created here and now. */
- sock_count = 0;
- listen = server->config->listen_port;
- while(listen) {
- int tmp;
-
- tmp = silc_net_create_server(server->config->listen_port->port,
- server->config->listen_port->listener_ip);
+ /* Packets we do not handle */
+ switch (packet->type) {
+ case SILC_PACKET_HEARTBEAT:
+ case SILC_PACKET_SUCCESS:
+ case SILC_PACKET_FAILURE:
+ case SILC_PACKET_REJECT:
+ case SILC_PACKET_KEY_EXCHANGE:
+ case SILC_PACKET_KEY_EXCHANGE_1:
+ case SILC_PACKET_KEY_EXCHANGE_2:
+ case SILC_PACKET_REKEY_DONE:
+ case SILC_PACKET_CONNECTION_AUTH:
+ return FALSE;
+ break;
+ }
- if (tmp < 0) {
- SILC_LOG_ERROR(("Could not create server listener: %s on %d",
- server->config->listen_port->listener_ip,
- server->config->listen_port->port));
- goto err0;
- }
+ /* Only specific packets can come without source ID present. */
+ if ((!packet->src_id ||
+ !(idata->status & SILC_IDLIST_STATUS_REGISTERED)) &&
+ packet->type != SILC_PACKET_NEW_CLIENT &&
+ packet->type != SILC_PACKET_NEW_SERVER &&
+ packet->type != SILC_PACKET_RESUME_CLIENT &&
+ packet->type != SILC_PACKET_CONNECTION_AUTH_REQUEST &&
+ packet->type != SILC_PACKET_DISCONNECT)
+ return FALSE;
- sock = silc_realloc(sock, sizeof(*sock) * (sock_count + 1));
- sock[sock_count] = tmp;
- sock_count++;
- listen = listen->next;
- }
+ /* NEW_CLIENT and NEW_SERVER are accepted only without source ID and
+ for unregistered connection. */
+ if (packet->src_id && (packet->type == SILC_PACKET_NEW_CLIENT ||
+ packet->type == SILC_PACKET_NEW_SERVER) &&
+ (idata->status & SILC_IDLIST_STATUS_REGISTERED))
+ return FALSE;
- /* Initialize ID caches */
- server->local_list->clients =
- silc_idcache_alloc(0, SILC_ID_CLIENT, silc_idlist_client_destructor);
- server->local_list->servers = silc_idcache_alloc(0, SILC_ID_SERVER, NULL);
- server->local_list->channels = silc_idcache_alloc(0, SILC_ID_CHANNEL, NULL);
+ /* Ignore packets from disabled connection */
+ if (idata->status & SILC_IDLIST_STATUS_DISABLED &&
+ packet->type != SILC_PACKET_HEARTBEAT &&
+ packet->type != SILC_PACKET_RESUME_ROUTER &&
+ packet->type != SILC_PACKET_REKEY)
+ return FALSE;
- /* These are allocated for normal server as well as these hold some
- global information that the server has fetched from its router. For
- router these are used as they are supposed to be used on router. */
- server->global_list->clients =
- silc_idcache_alloc(0, SILC_ID_CLIENT, silc_idlist_client_destructor);
- server->global_list->servers = silc_idcache_alloc(0, SILC_ID_SERVER, NULL);
- server->global_list->channels = silc_idcache_alloc(0, SILC_ID_CHANNEL, NULL);
-
- /* Allocate the entire socket list that is used in server. Eventually
- all connections will have entry in this table (it is a table of
- pointers to the actual object that is allocated individually
- later). */
- server->sockets = silc_calloc(SILC_SERVER_MAX_CONNECTIONS,
- sizeof(*server->sockets));
-
- for (i = 0; i < sock_count; i++) {
- SilcSocketConnection newsocket = NULL;
-
- /* Set socket to non-blocking mode */
- silc_net_set_socket_nonblock(sock[i]);
- server->sock = sock[i];
-
- /* Add ourselves also to the socket table. The entry allocated above
- is sent as argument for fast referencing in the future. */
- silc_socket_alloc(sock[i], SILC_SOCKET_TYPE_SERVER, NULL, &newsocket);
- server->sockets[sock[i]] = newsocket;
-
- /* Perform name and address lookups to resolve the listenning address
- and port. */
- if (!silc_net_check_local_by_sock(sock[i], &newsocket->hostname,
- &newsocket->ip)) {
- if ((server->params->require_reverse_mapping && !newsocket->hostname) ||
- !newsocket->ip) {
- SILC_LOG_ERROR(("IP/DNS lookup failed for local host %s",
- newsocket->hostname ? newsocket->hostname :
- newsocket->ip ? newsocket->ip : ""));
- server->stat.conn_failures++;
- goto err0;
+ /* Check that the the current client ID is same as in the client's packet. */
+ if (idata->conn_type == SILC_CONN_CLIENT) {
+ SilcClientEntry client = (SilcClientEntry)silc_packet_get_context(stream);
+ SilcClientID client_id;
+
+ if (client->id && packet->src_id &&
+ silc_id_str2id(packet->src_id, packet->src_id_len,
+ packet->src_id_type, &client_id, sizeof(client_id))) {
+ if (!SILC_ID_CLIENT_COMPARE(client->id, &client_id)) {
+ SILC_LOG_DEBUG(("Packet source is not same as sender, packet %s",
+ silc_get_packet_name(packet->type)));
+ return FALSE;
}
- if (!newsocket->hostname)
- newsocket->hostname = strdup(newsocket->ip);
- }
- newsocket->port = silc_net_get_local_port(sock[i]);
-
- /* Create a Server ID for the server. */
- silc_id_create_server_id(newsocket->ip, newsocket->port, server->rng, &id);
- if (!id)
- goto err0;
-
- server->id = id;
- server->id_string = silc_id_id2str(id, SILC_ID_SERVER);
- server->id_string_len = silc_id_get_len(id, SILC_ID_SERVER);
- server->id_type = SILC_ID_SERVER;
- server->server_name = server->config->server_info->server_name;
-
- /* Add ourselves to the server list. We don't have a router yet
- beacuse we haven't established a route yet. It will be done later.
- For now, NULL is sent as router. This allocates new entry to
- the ID list. */
- id_entry =
- silc_idlist_add_server(server->local_list,
- server->config->server_info->server_name,
- server->server_type, server->id, NULL, NULL);
- if (!id_entry) {
- SILC_LOG_ERROR(("Could not add ourselves to cache"));
- goto err0;
}
- id_entry->data.status |= SILC_IDLIST_STATUS_REGISTERED;
-
- /* Put the allocated socket pointer also to the entry allocated above
- for fast back-referencing to the socket list. */
- newsocket->user_data = (void *)id_entry;
- id_entry->connection = (void *)newsocket;
- server->id_entry = id_entry;
}
- /* Register protocols */
- silc_server_protocols_register();
-
- /* Initialize the scheduler. */
- server->schedule = silc_schedule_init(SILC_SERVER_MAX_CONNECTIONS);
- if (!server->schedule)
- goto err0;
-
- /* Add the first task to the scheduler. This is task that is executed by
- timeout. It expires as soon as the caller calls silc_server_run. This
- task performs authentication protocol and key exchange with our
- primary router. */
- silc_schedule_task_add(server->schedule, sock[0],
- silc_server_connect_to_router,
- (void *)server, 0, 1,
- SILC_TASK_TIMEOUT,
- SILC_TASK_PRI_NORMAL);
-
- /* Add listener task to the scheduler. This task receives new connections
- to the server. This task remains on the queue until the end of the
- program. */
- silc_schedule_task_add(server->schedule, sock[0],
- silc_server_accept_new_connection,
- (void *)server, 0, 0,
- SILC_TASK_FD,
- SILC_TASK_PRI_NORMAL);
- server->listenning = TRUE;
+ if (server->server_type == SILC_ROUTER) {
+ /* Route the packet if it is not destined to us. Other ID types but
+ server are handled separately after processing them. */
+ if (packet->dst_id &&
+ !(packet->flags & SILC_PACKET_FLAG_BROADCAST) &&
+ packet->dst_id_type == SILC_ID_SERVER &&
+ idata->conn_type != SILC_CONN_CLIENT &&
+ memcmp(packet->dst_id, server->id_string, server->id_string_len)) {
+ SilcPacketStream conn;
+ SilcServerID server_id;
- /* If server connections has been configured then we must be router as
- normal server cannot have server connections, only router connections. */
- if (server->config->servers) {
- SilcServerConfigSectionServerConnection *ptr = server->config->servers;
+ silc_id_str2id(packet->dst_id, packet->dst_id_len, packet->dst_id_type,
+ &server_id, sizeof(server_id));
- server->server_type = SILC_ROUTER;
- while (ptr) {
- if (ptr->backup_router) {
- server->server_type = SILC_BACKUP_ROUTER;
- server->backup_router = TRUE;
- server->id_entry->server_type = SILC_BACKUP_ROUTER;
- break;
+ conn = silc_server_route_get(server, &server_id, SILC_ID_SERVER);
+ if (!conn) {
+ SILC_LOG_WARNING(("Packet to unknown server ID %s, dropped (no route)",
+ silc_id_render(&server_id, SILC_ID_SERVER)));
+ return FALSE;
}
- ptr = ptr->next;
+
+ silc_server_packet_route(server, conn, packet);
+ silc_packet_free(packet);
+ return TRUE;
}
}
- /* Register the ID Cache purge task. This periodically purges the ID cache
- and removes the expired cache entries. */
-
- /* Clients local list */
- purge = silc_calloc(1, sizeof(*purge));
- purge->cache = server->local_list->clients;
- purge->schedule = server->schedule;
- purge->timeout = 600;
- silc_schedule_task_add(purge->schedule, 0,
- silc_idlist_purge,
- (void *)purge, purge->timeout, 0,
- SILC_TASK_TIMEOUT, SILC_TASK_PRI_LOW);
-
- /* Clients global list */
- purge = silc_calloc(1, sizeof(*purge));
- purge->cache = server->global_list->clients;
- purge->schedule = server->schedule;
- purge->timeout = 300;
- silc_schedule_task_add(purge->schedule, 0,
- silc_idlist_purge,
- (void *)purge, purge->timeout, 0,
- SILC_TASK_TIMEOUT, SILC_TASK_PRI_LOW);
+ /* Broadcast packet if it is marked as broadcast packet and it is
+ originated from router and we are router. */
+ if (server->server_type == SILC_ROUTER &&
+ idata->conn_type == SILC_CONN_ROUTER &&
+ packet->flags & SILC_PACKET_FLAG_BROADCAST) {
+ /* Broadcast to our primary route */
+ silc_server_packet_broadcast(server, SILC_PRIMARY_ROUTE(server), packet);
+
+ /* If we have backup routers then we need to feed all broadcast
+ data to those servers. */
+ silc_server_backup_broadcast(server, stream, packet);
+ }
- SILC_LOG_DEBUG(("Server initialized"));
+ /* Process packet */
+ silc_server_packet_parse_type(server, stream, packet);
- /* We are done here, return succesfully */
return TRUE;
-
- err0:
- for (i = 0; i < sock_count; i++)
- silc_net_close_server(sock[i]);
-
- return FALSE;
}
-/* Fork server to background and set gid+uid to non-root */
+/* Packet engine callback to indicate end of stream */
-void silc_server_daemonise(SilcServer server)
+static void silc_server_packet_eos(SilcPacketEngine engine,
+ SilcPacketStream stream,
+ void *callback_context,
+ void *stream_context)
{
- int i;
+ SilcServer server = callback_context;
+ SilcIDListData idata = silc_packet_get_context(stream);
- i = fork ();
+ SILC_LOG_DEBUG(("End of stream received, sock %p", stream));
- if (i) {
- if (i > 0) {
- if (geteuid())
- SILC_LOG_DEBUG(("Server started as user"));
- else
- SILC_LOG_DEBUG(("Server started as root. Dropping privileges."));
+ if (!idata)
+ return;
- SILC_LOG_DEBUG(("Forking SILC server to background"));
- exit(0);
- } else {
- SILC_LOG_DEBUG(("fork() failed, cannot proceed"));
- exit(1);
+ if (server->router_conn && server->router_conn->sock == stream &&
+ !server->router && server->standalone) {
+ silc_server_create_connections(server);
+ silc_server_free_sock_user_data(server, stream, NULL);
+ } else {
+ /* If backup disconnected then mark that resuming will not be allowed */
+ if (server->server_type == SILC_ROUTER && !server->backup_router &&
+ idata->conn_type == SILC_CONN_SERVER) {
+ SilcServerEntry server_entry = (SilcServerEntry)idata;
+ if (server_entry->server_type == SILC_BACKUP_ROUTER)
+ server->backup_closed = TRUE;
}
+
+ silc_server_free_sock_user_data(server, stream, NULL);
}
- setsid();
-}
-/* Drop root privligies. If this cannot be done, die. */
+ silc_server_close_connection(server, stream);
+}
-void silc_server_drop(SilcServer server)
+SILC_TASK_CALLBACK(silc_server_packet_error_timeout)
{
- /* Are we executing silcd as root or a regular user? */
- if (!geteuid()) {
+ SilcServer server = app_context;
+ SilcPacketStream stream = context;
+ SilcIDListData idata = silc_packet_get_context(stream);
- struct passwd *pw;
- struct group *gr;
- char *user, *group;
+ if (!idata)
+ return;
- if (!server->config->identity || !server->config->identity->user ||
- !server->config->identity->group) {
- fprintf(stderr, "Error:"
- "\tSILC server must not be run as root. For the security of your\n"
- "\tsystem it is strongly suggested that you run SILC under dedicated\n"
- "\tuser account. Modify the [Identity] configuration section to run\n"
- "\tthe server as non-root user.\n");
- exit(1);
+ if (server->router_conn && server->router_conn->sock == stream &&
+ !server->router && server->standalone) {
+ silc_server_create_connections(server);
+ } else {
+ /* If backup disconnected then mark that resuming will not be allowed */
+ if (server->server_type == SILC_ROUTER && !server->backup_router &&
+ idata->conn_type == SILC_CONN_SERVER) {
+ SilcServerEntry server_entry = (SilcServerEntry)idata;
+ if (server_entry->server_type == SILC_BACKUP_ROUTER)
+ server->backup_closed = TRUE;
}
- /* Get the values given for user and group in configuration file */
- user=server->config->identity->user;
- group=server->config->identity->group;
+ silc_server_free_sock_user_data(server, stream, NULL);
+ }
- /* Check whether the user/group information is text */
- if (atoi(user)!=0 || atoi(group)!=0) {
- SILC_LOG_DEBUG(("Invalid user and/or group information"));
- SILC_LOG_DEBUG(("User and/or group given as number"));
- fprintf(stderr, "Invalid user and/or group information\n");
- fprintf(stderr, "Please assign them as names, not numbers\n");
- exit(1);
- }
+ silc_server_close_connection(server, stream);
+}
- /* Catch the nasty incident of string "0" returning 0 from atoi */
- if (strcmp("0", user)==0 || strcmp("0", group)==0) {
- SILC_LOG_DEBUG(("User and/or group configured to 0. Unacceptable"));
- fprintf(stderr, "User and/or group configured to 0. Exiting\n");
- exit(1);
- }
+/* Packet engine callback to indicate error */
- if (!(pw=getpwnam(user))) {
- fprintf(stderr, "No such user %s found\n", user);
- exit(1);
- }
+static void silc_server_packet_error(SilcPacketEngine engine,
+ SilcPacketStream stream,
+ SilcPacketError error,
+ void *callback_context,
+ void *stream_context)
+{
+ SilcServer server = callback_context;
+ SilcIDListData idata = silc_packet_get_context(stream);
+ SilcStream sock = silc_packet_stream_get_stream(stream);
+ const char *ip;
+ SilcUInt16 port;
- if (!(gr=getgrnam(group))) {
- fprintf(stderr, "No such group %s found\n", group);
- exit(1);
- }
+ SILC_LOG_DEBUG(("Packet error, sock %p", stream));
- /* Check whether user and/or group is set to root. If yes, exit
- immediately. Otherwise, setgid and setuid server to user.group */
- if (gr->gr_gid==0 || pw->pw_uid==0) {
- fprintf(stderr, "Error:"
- "\tSILC server must not be run as root. For the security of your\n"
- "\tsystem it is strongly suggested that you run SILC under dedicated\n"
- "\tuser account. Modify the [Identity] configuration section to run\n"
- "\tthe server as non-root user.\n");
- exit(1);
- } else {
- SILC_LOG_DEBUG(("Changing to group %s", group));
- if (setgid(gr->gr_gid)==0) {
- SILC_LOG_DEBUG(("Setgid to %s", group));
- } else {
- SILC_LOG_DEBUG(("Setgid to %s failed", group));
- fprintf(stderr, "Tried to setgid %s but no such group. Exiting\n",
- group);
- exit(1);
- }
-#if defined HAVE_SETGROUPS && defined HAVE_INITGROUPS
- if (setgroups(0, NULL)!=0) {
- SILC_LOG_DEBUG(("Setgroups to NULL failed"));
- fprintf(stderr, "Tried to setgroups NULL but failed. Exiting\n");
- exit(1);
- }
- if (initgroups(user, gr->gr_gid)!=0) {
- SILC_LOG_DEBUG(("Initgroups to user %s (gid=%d) failed", user, gr->gr_gid));
- fprintf(stderr, "Tried to initgroups %s (gid=%d) but no such user. Exiting\n",
- user, gr->gr_gid);
- exit(1);
- }
-#endif
- SILC_LOG_DEBUG(("Changing to user %s", user));
- if (setuid(pw->pw_uid)==0) {
- SILC_LOG_DEBUG(("Setuid to %s", user));
- } else {
- SILC_LOG_DEBUG(("Setuid to %s failed", user));
- fprintf(stderr, "Tried to setuid %s but no such user. Exiting\n",
- user);
- exit(1);
- }
- }
- }
-}
+ if (!idata || !sock)
+ return;
-/* The heart of the server. This runs the scheduler thus runs the server.
- When this returns the server has been stopped and the program will
- be terminated. */
+ if (!silc_socket_stream_get_info(sock, NULL, NULL, &ip, &port))
+ return;
-void silc_server_run(SilcServer server)
-{
- SILC_LOG_DEBUG(("Running server"));
+ SILC_LOG_ERROR(("Connection %s:%d [%s]: %s", ip, port,
+ SILC_CONNTYPE_STRING(idata->conn_type),
+ silc_packet_error_string(error)));
- SILC_LOG_INFO(("SILC Server started"));
+ if (!silc_packet_stream_is_valid(stream))
+ return;
- /* Start the scheduler, the heart of the SILC server. When this returns
- the program will be terminated. */
- silc_schedule(server->schedule);
+ silc_schedule_task_add_timeout(server->schedule,
+ silc_server_packet_error_timeout,
+ stream, 0, 0);
}
-/* Stops the SILC server. This function is used to shutdown the server.
- This is usually called after the scheduler has returned. After stopping
- the server one should call silc_server_free. */
-
-void silc_server_stop(SilcServer server)
+/* Packet stream callbacks */
+static SilcPacketCallbacks silc_server_stream_cbs =
{
- SILC_LOG_DEBUG(("Stopping server"));
+ silc_server_packet_receive,
+ silc_server_packet_eos,
+ silc_server_packet_error
+};
- silc_schedule_stop(server->schedule);
- silc_schedule_uninit(server->schedule);
+/* Parses the packet type and calls what ever routines the packet type
+ requires. This is done for all incoming packets. */
- silc_server_protocols_unregister();
+static void silc_server_packet_parse_type(SilcServer server,
+ SilcPacketStream sock,
+ SilcPacket packet)
+{
+ SilcPacketType type = packet->type;
+ SilcIDListData idata = silc_packet_get_context(sock);
- SILC_LOG_DEBUG(("Server stopped"));
-}
+ SILC_LOG_DEBUG(("Received %s packet [flags %d]",
+ silc_get_packet_name(type), packet->flags));
-/* Function that is called when the network connection to a router has
- been established. This will continue with the key exchange protocol
- with the remote router. */
+ /* Parse the packet type */
+ switch (type) {
+ case SILC_PACKET_NOTIFY:
+ /*
+ * Received notify packet. Server can receive notify packets from
+ * router. Server then relays the notify messages to clients if needed.
+ */
+ if (packet->flags & SILC_PACKET_FLAG_LIST)
+ silc_server_notify_list(server, sock, packet);
+ else
+ silc_server_notify(server, sock, packet);
+ break;
-void silc_server_start_key_exchange(SilcServer server,
- SilcServerConnection sconn,
- int sock)
-{
- SilcSocketConnection newsocket;
- SilcProtocol protocol;
- SilcServerKEInternalContext *proto_ctx;
- void *context;
-
- /* Set socket options */
- silc_net_set_socket_nonblock(sock);
- silc_net_set_socket_opt(sock, SOL_SOCKET, SO_REUSEADDR, 1);
-
- /* Create socket connection for the connection. Even though we
- know that we are connecting to a router we will mark the socket
- to be unknown connection until we have executed authentication
- protocol. */
- silc_socket_alloc(sock, SILC_SOCKET_TYPE_UNKNOWN, NULL, &newsocket);
- server->sockets[sock] = newsocket;
- newsocket->hostname = strdup(sconn->remote_host);
- newsocket->ip = strdup(sconn->remote_host);
- newsocket->port = sconn->remote_port;
- sconn->sock = newsocket;
-
- /* Allocate internal protocol context. This is sent as context
- to the protocol. */
- proto_ctx = silc_calloc(1, sizeof(*proto_ctx));
- proto_ctx->server = (void *)server;
- proto_ctx->context = (void *)sconn;
- proto_ctx->sock = newsocket;
- proto_ctx->rng = server->rng;
- proto_ctx->responder = FALSE;
-
- /* Perform key exchange protocol. silc_server_connect_to_router_second
- will be called after the protocol is finished. */
- silc_protocol_alloc(SILC_PROTOCOL_SERVER_KEY_EXCHANGE,
- &protocol, proto_ctx,
- silc_server_connect_to_router_second);
- newsocket->protocol = protocol;
-
- /* Register a timeout task that will be executed if the protocol
- is not executed within set limit. */
- proto_ctx->timeout_task =
- silc_schedule_task_add(server->schedule, sock,
- silc_server_timeout_remote,
- server, server->params->protocol_timeout,
- server->params->protocol_timeout_usec,
- SILC_TASK_TIMEOUT,
- SILC_TASK_PRI_LOW);
-
- /* Register the connection for network input and output. This sets
- that scheduler will listen for incoming packets for this connection
- and sets that outgoing packets may be sent to this connection as
- well. However, this doesn't set the scheduler for outgoing traffic,
- it will be set separately by calling SILC_SET_CONNECTION_FOR_OUTPUT,
- later when outgoing data is available. */
- context = (void *)server;
- SILC_REGISTER_CONNECTION_FOR_IO(sock);
-
- /* Run the protocol */
- silc_protocol_execute(protocol, server->schedule, 0, 0);
-}
+ /*
+ * Private Message packets
+ */
+ case SILC_PACKET_PRIVATE_MESSAGE:
+ /*
+ * Received private message packet. The packet is coming from either
+ * client or server.
+ */
+ if (packet->flags & SILC_PACKET_FLAG_LIST)
+ break;
+ idata->last_receive = time(NULL);
+ silc_server_private_message(server, sock, packet);
+ break;
-/* Timeout callback that will be called to retry connecting to remote
- router. This is used by both normal and router server. This will wait
- before retrying the connecting. The timeout is generated by exponential
- backoff algorithm. */
+ /*
+ * Channel packets
+ */
+ case SILC_PACKET_CHANNEL_MESSAGE:
+ /*
+ * Received channel message. Channel messages are special packets
+ * (although probably most common ones) thus they are handled
+ * specially.
+ */
+ if (packet->flags & SILC_PACKET_FLAG_LIST)
+ break;
+ idata->last_receive = time(NULL);
+ silc_server_channel_message(server, sock, packet);
+ break;
-SILC_TASK_CALLBACK(silc_server_connect_to_router_retry)
-{
- SilcServerConnection sconn = (SilcServerConnection)context;
- SilcServer server = sconn->server;
+ /*
+ * Command packets
+ */
+ case SILC_PACKET_COMMAND:
+ /*
+ * Recived command. Processes the command request and allocates the
+ * command context and calls the command.
+ */
+ if (packet->flags & SILC_PACKET_FLAG_LIST)
+ break;
+ server->stat.commands_received++;
+ silc_server_command_process(server, sock, packet);
+ break;
- SILC_LOG_INFO(("Retrying connecting to a router"));
+ case SILC_PACKET_COMMAND_REPLY:
+ /*
+ * Received command reply packet. Received command reply to command. It
+ * may be reply to command sent by us or reply to command sent by client
+ * that we've routed further.
+ */
+ if (packet->flags & SILC_PACKET_FLAG_LIST)
+ break;
+ server->stat.commands_received++;
+ silc_server_command_reply(server, sock, packet);
+ break;
- /* Calculate next timeout */
- if (sconn->retry_count >= 1) {
- sconn->retry_timeout = sconn->retry_timeout * SILC_SERVER_RETRY_MULTIPLIER;
- if (sconn->retry_timeout > SILC_SERVER_RETRY_INTERVAL_MAX)
- sconn->retry_timeout = SILC_SERVER_RETRY_INTERVAL_MAX;
- } else {
- sconn->retry_timeout = server->params->retry_interval_min;
- }
- sconn->retry_count++;
- sconn->retry_timeout = sconn->retry_timeout +
- silc_rng_get_rn32(server->rng) % SILC_SERVER_RETRY_RANDOMIZER;
+ case SILC_PACKET_DISCONNECT:
+ {
+ SilcStatus status;
+ char *message = NULL;
+ const char *hostname, *ip;
- /* If we've reached max retry count, give up. */
- if (sconn->retry_count > server->params->retry_count &&
- server->params->retry_keep_trying == FALSE) {
- SILC_LOG_ERROR(("Could not connect to router, giving up"));
- silc_free(sconn->remote_host);
- silc_free(sconn);
- return;
- }
+ if (packet->flags & SILC_PACKET_FLAG_LIST)
+ break;
+ if (silc_buffer_len(&packet->buffer) < 1)
+ break;
- /* Wait one before retrying */
- silc_schedule_task_add(server->schedule, fd, silc_server_connect_router,
- context, sconn->retry_timeout,
- server->params->retry_interval_min_usec,
- SILC_TASK_TIMEOUT, SILC_TASK_PRI_NORMAL);
-}
+ status = (SilcStatus)packet->buffer.data[0];
+ if (silc_buffer_len(&packet->buffer) > 1 &&
+ silc_utf8_valid(packet->buffer.data + 1,
+ silc_buffer_len(&packet->buffer) - 1))
+ message = silc_memdup(packet->buffer.data + 1,
+ silc_buffer_len(&packet->buffer) - 1);
-/* Generic routine to use connect to a router. */
+ if (!silc_socket_stream_get_info(silc_packet_stream_get_stream(sock),
+ NULL, &hostname, &ip, NULL))
+ break;
-SILC_TASK_CALLBACK(silc_server_connect_router)
-{
- SilcServerConnection sconn = (SilcServerConnection)context;
- SilcServer server = sconn->server;
- int sock;
+ SILC_LOG_INFO(("Disconnected by %s (%s): %s (%d) %s", ip, hostname,
+ silc_get_status_message(status), status,
+ message ? message : ""));
- SILC_LOG_INFO(("Connecting to the %s %s on port %d",
- (sconn->backup ? "backup router" : "router"),
- sconn->remote_host, sconn->remote_port));
+ silc_free(message);
- server->router_connect = time(0);
+ /* Do not switch to backup in case of error */
+ server->backup_noswitch = (status == SILC_STATUS_OK ? FALSE : TRUE);
- /* Connect to remote host */
- sock = silc_net_create_connection(server->config->listen_port->local_ip,
- sconn->remote_port,
- sconn->remote_host);
- if (sock < 0) {
- SILC_LOG_ERROR(("Could not connect to router"));
- silc_schedule_task_add(server->schedule, fd,
- silc_server_connect_to_router_retry,
- context, 0, 1, SILC_TASK_TIMEOUT,
- SILC_TASK_PRI_NORMAL);
- return;
- }
+ /* If backup disconnected then mark that resuming will not be allowed */
+ if (server->server_type == SILC_ROUTER && !server->backup_router &&
+ idata->conn_type == SILC_CONN_SERVER) {
+ SilcServerEntry server_entry = (SilcServerEntry)idata;
+ if (server_entry->server_type == SILC_BACKUP_ROUTER)
+ server->backup_closed = TRUE;
+ }
- /* Continue with key exchange protocol */
- silc_server_start_key_exchange(server, sconn, sock);
-}
-
-/* This function connects to our primary router or if we are a router this
- establishes all our primary routes. This is called at the start of the
- server to do authentication and key exchange with our router - called
- from schedule. */
+ /* Handle the disconnection from our end too */
+ if (SILC_IS_LOCAL(idata))
+ silc_server_free_sock_user_data(server, sock, NULL);
+ silc_server_close_connection(server, sock);
+ server->backup_noswitch = FALSE;
+ }
+ break;
-SILC_TASK_CALLBACK(silc_server_connect_to_router)
-{
- SilcServer server = (SilcServer)context;
- SilcServerConnection sconn;
- SilcServerConfigSectionServerConnection *ptr;
+ case SILC_PACKET_CHANNEL_KEY:
+ /*
+ * Received key for channel. As channels are created by the router
+ * the keys are as well. We will distribute the key to all of our
+ * locally connected clients on the particular channel. Router
+ * never receives this channel and thus is ignored.
+ */
+ if (packet->flags & SILC_PACKET_FLAG_LIST)
+ break;
+ silc_server_channel_key(server, sock, packet);
+ break;
- SILC_LOG_DEBUG(("Connecting to router(s)"));
+ case SILC_PACKET_PRIVATE_MESSAGE_KEY:
+ /*
+ * Private message key packet.
+ */
+ if (packet->flags & SILC_PACKET_FLAG_LIST)
+ break;
+ silc_server_private_message_key(server, sock, packet);
+ break;
- if (server->server_type == SILC_SERVER) {
- SILC_LOG_DEBUG(("We are normal server"));
- } else if (server->server_type == SILC_ROUTER) {
- SILC_LOG_DEBUG(("We are router"));
- } else {
- SILC_LOG_DEBUG(("We are backup router/normal server"));
- }
+ case SILC_PACKET_CONNECTION_AUTH_REQUEST:
+ /*
+ * Connection authentication request packet. When we receive this packet
+ * we will send to the other end information about our mandatory
+ * authentication method for the connection. This packet maybe received
+ * at any time.
+ */
+ if (packet->flags & SILC_PACKET_FLAG_LIST)
+ break;
+ silc_server_connection_auth_request(server, sock, packet);
+ break;
- /* Create the connections to all our routes */
- ptr = server->config->routers;
- while (ptr) {
-
- SILC_LOG_DEBUG(("%s connection [%s] %s:%d",
- ptr->backup_router ? "Backup router" : "Router",
- ptr->initiator ? "Initiator" : "Responder",
- ptr->host, ptr->port));
+ case SILC_PACKET_NEW_ID:
+ /*
+ * Received New ID packet. This includes some new ID that has been
+ * created. It may be for client, server or channel. This is the way
+ * to distribute information about new registered entities in the
+ * SILC network.
+ */
+ if (packet->flags & SILC_PACKET_FLAG_LIST)
+ silc_server_new_id_list(server, sock, packet);
+ else
+ silc_server_new_id(server, sock, packet);
+ break;
- if (ptr->initiator) {
- /* Allocate connection object for hold connection specific stuff. */
- sconn = silc_calloc(1, sizeof(*sconn));
- sconn->server = server;
- sconn->remote_host = strdup(ptr->host);
- sconn->remote_port = ptr->port;
- sconn->backup = ptr->backup_router;
- if (sconn->backup) {
- sconn->backup_replace_ip = strdup(ptr->backup_replace_ip);
- sconn->backup_replace_port = ptr->backup_replace_port;
- }
+ case SILC_PACKET_NEW_CLIENT:
+ /*
+ * Received new client packet. This includes client information that
+ * we will use to create initial client ID. After creating new
+ * ID we will send it to the client.
+ */
+ if (packet->flags & SILC_PACKET_FLAG_LIST)
+ break;
+ silc_server_new_client(server, sock, packet);
+ break;
- if (!server->router_conn && !sconn->backup)
- server->router_conn = sconn;
+ case SILC_PACKET_NEW_SERVER:
+ /*
+ * Received new server packet. This includes Server ID and some other
+ * information that we may save. This is received after server has
+ * connected to us.
+ */
+ if (packet->flags & SILC_PACKET_FLAG_LIST)
+ break;
+ silc_server_new_server(server, sock, packet);
+ break;
- silc_schedule_task_add(server->schedule, fd,
- silc_server_connect_router,
- (void *)sconn, 0, 1, SILC_TASK_TIMEOUT,
- SILC_TASK_PRI_NORMAL);
- }
+ case SILC_PACKET_NEW_CHANNEL:
+ /*
+ * Received new channel packet. Information about new channel in the
+ * network are distributed using this packet.
+ */
+ if (packet->flags & SILC_PACKET_FLAG_LIST)
+ silc_server_new_channel_list(server, sock, packet);
+ else
+ silc_server_new_channel(server, sock, packet);
+ break;
- if (!ptr->next)
- return;
-
- ptr = ptr->next;
- }
+ case SILC_PACKET_HEARTBEAT:
+ /*
+ * Received heartbeat.
+ */
+ if (packet->flags & SILC_PACKET_FLAG_LIST)
+ break;
+ break;
- SILC_LOG_DEBUG(("No router(s), server will be standalone"));
-
- /* There wasn't a configured router, we will continue but we don't
- have a connection to outside world. We will be standalone server. */
- server->standalone = TRUE;
+ case SILC_PACKET_KEY_AGREEMENT:
+ /*
+ * Received heartbeat.
+ */
+ if (packet->flags & SILC_PACKET_FLAG_LIST)
+ break;
+ silc_server_key_agreement(server, sock, packet);
+ break;
+
+ case SILC_PACKET_REKEY:
+ /*
+ * Received re-key packet. The sender wants to regenerate the session
+ * keys.
+ */
+ if (packet->flags & SILC_PACKET_FLAG_LIST)
+ break;
+ silc_server_rekey(server, sock, packet);
+ break;
+
+ case SILC_PACKET_FTP:
+ /* FTP packet */
+ if (packet->flags & SILC_PACKET_FLAG_LIST)
+ break;
+ silc_server_ftp(server, sock, packet);
+ break;
+
+ case SILC_PACKET_RESUME_CLIENT:
+ /* Resume client */
+ if (packet->flags & SILC_PACKET_FLAG_LIST)
+ break;
+ silc_server_resume_client(server, sock, packet);
+ break;
+
+ case SILC_PACKET_RESUME_ROUTER:
+ /* Resume router packet received. This packet is received for backup
+ router resuming protocol. */
+ if (packet->flags & SILC_PACKET_FLAG_LIST)
+ break;
+ silc_server_backup_resume_router(server, sock, packet);
+ break;
+
+ default:
+ SILC_LOG_ERROR(("Incorrect packet type %d, packet dropped", type));
+ break;
+ }
}
-/* Second part of connecting to router(s). Key exchange protocol has been
- executed and now we will execute authentication protocol. */
+/****************************** Server API **********************************/
+
+/* Allocates a new SILC server object. This has to be done before the server
+ can be used. After allocation one must call silc_server_init to initialize
+ the server. The new allocated server object is returned to the new_server
+ argument. */
-SILC_TASK_CALLBACK(silc_server_connect_to_router_second)
+SilcBool silc_server_alloc(SilcServer *new_server)
{
- SilcProtocol protocol = (SilcProtocol)context;
- SilcServerKEInternalContext *ctx =
- (SilcServerKEInternalContext *)protocol->context;
- SilcServer server = (SilcServer)ctx->server;
- SilcServerConnection sconn = (SilcServerConnection)ctx->context;
- SilcSocketConnection sock = ctx->sock;
- SilcServerConnAuthInternalContext *proto_ctx;
- SilcServerConfigSectionServerConnection *conn = NULL;
+ SilcServer server;
- SILC_LOG_DEBUG(("Start"));
+ SILC_LOG_DEBUG(("Allocating new server object"));
- if (protocol->state == SILC_PROTOCOL_STATE_ERROR ||
- protocol->state == SILC_PROTOCOL_STATE_FAILURE) {
- /* Error occured during protocol */
- silc_protocol_free(protocol);
- sock->protocol = NULL;
- silc_ske_free_key_material(ctx->keymat);
- if (ctx->packet)
- silc_packet_context_free(ctx->packet);
- if (ctx->ske)
- silc_ske_free(ctx->ske);
- silc_free(ctx->dest_id);
- silc_free(ctx);
- silc_schedule_task_del_by_callback(server->schedule,
- silc_server_failure_callback);
- silc_server_disconnect_remote(server, sock, "Server closed connection: "
- "Key exchange failed");
- return;
- }
-
- /* We now have the key material as the result of the key exchange
- protocol. Take the key material into use. Free the raw key material
- as soon as we've set them into use. */
- if (!silc_server_protocol_ke_set_keys(server, ctx->ske,
- ctx->sock, ctx->keymat,
- ctx->ske->prop->cipher,
- ctx->ske->prop->pkcs,
- ctx->ske->prop->hash,
- ctx->ske->prop->hmac,
- ctx->ske->prop->group,
- ctx->responder)) {
- silc_protocol_free(protocol);
- sock->protocol = NULL;
- silc_ske_free_key_material(ctx->keymat);
- if (ctx->packet)
- silc_packet_context_free(ctx->packet);
- if (ctx->ske)
- silc_ske_free(ctx->ske);
- silc_free(ctx->dest_id);
- silc_free(ctx);
- silc_schedule_task_del_by_callback(server->schedule,
- silc_server_failure_callback);
- silc_server_disconnect_remote(server, sock, "Server closed connection: "
- "Key exchange failed");
- return;
- }
- silc_ske_free_key_material(ctx->keymat);
-
- /* Allocate internal context for the authentication protocol. This
- is sent as context for the protocol. */
- proto_ctx = silc_calloc(1, sizeof(*proto_ctx));
- proto_ctx->server = (void *)server;
- proto_ctx->context = (void *)sconn;
- proto_ctx->sock = sock;
- proto_ctx->ske = ctx->ske; /* Save SKE object from previous protocol */
- proto_ctx->dest_id_type = ctx->dest_id_type;
- proto_ctx->dest_id = ctx->dest_id;
-
- /* Resolve the authentication method used in this connection. Check if
- we find a match from user configured connections */
- conn = silc_server_config_find_router_conn(server->config,
- sock->hostname,
- sock->port);
- if (conn) {
- /* Match found. Use the configured authentication method */
- proto_ctx->auth_meth = conn->auth_meth;
- if (conn->auth_data) {
- proto_ctx->auth_data = strdup(conn->auth_data);
- proto_ctx->auth_data_len = strlen(conn->auth_data);
- }
- } else {
- SILC_LOG_ERROR(("Could not find connection data for %s (%s) on port",
- sock->hostname, sock->ip, sock->port));
- silc_protocol_free(protocol);
- sock->protocol = NULL;
- if (ctx->packet)
- silc_packet_context_free(ctx->packet);
- if (ctx->ske)
- silc_ske_free(ctx->ske);
- silc_free(ctx->dest_id);
- silc_free(ctx);
- silc_schedule_task_del_by_callback(server->schedule,
- silc_server_failure_callback);
- silc_server_disconnect_remote(server, sock, "Server closed connection: "
- "Key exchange failed");
- return;
- }
+ server = silc_calloc(1, sizeof(*server));
+ if (!server)
+ return FALSE;
+ server->server_type = SILC_SERVER;
+ server->standalone = TRUE;
+ server->local_list = silc_calloc(1, sizeof(*server->local_list));
+ if (!server->local_list)
+ return FALSE;
+ server->global_list = silc_calloc(1, sizeof(*server->global_list));
+ if (!server->global_list)
+ return FALSE;
+ server->pending_commands = silc_dlist_init();
+ if (!server->pending_commands)
+ return FALSE;
+ server->listeners = silc_dlist_init();
+ if (!server->listeners)
+ return FALSE;
+ server->repository = silc_skr_alloc();
+ if (!server->repository)
+ return FALSE;
+ server->conns = silc_dlist_init();
+ if (!server->conns)
+ return FALSE;
+ server->expired_clients = silc_dlist_init();
+ if (!server->expired_clients)
+ return FALSE;
+
+ *new_server = server;
- /* Free old protocol as it is finished now */
- silc_protocol_free(protocol);
- if (ctx->packet)
- silc_packet_context_free(ctx->packet);
- silc_free(ctx);
- sock->protocol = NULL;
-
- /* Allocate the authentication protocol. This is allocated here
- but we won't start it yet. We will be receiving party of this
- protocol thus we will wait that connecting party will make
- their first move. */
- silc_protocol_alloc(SILC_PROTOCOL_SERVER_CONNECTION_AUTH,
- &sock->protocol, proto_ctx,
- silc_server_connect_to_router_final);
-
- /* Register timeout task. If the protocol is not executed inside
- this timelimit the connection will be terminated. Currently
- this is 15 seconds and is hard coded limit (XXX). */
- proto_ctx->timeout_task =
- silc_schedule_task_add(server->schedule, sock->sock,
- silc_server_timeout_remote,
- (void *)server, 15, 0,
- SILC_TASK_TIMEOUT,
- SILC_TASK_PRI_LOW);
-
- /* Run the protocol */
- silc_protocol_execute(sock->protocol, server->schedule, 0, 0);
+ return TRUE;
}
-/* Finalizes the connection to router. Registers a server task to the
- queue so that we can accept new connections. */
+/* Free's the SILC server object. This is called at the very end before
+ the program ends. */
-SILC_TASK_CALLBACK(silc_server_connect_to_router_final)
+void silc_server_free(SilcServer server)
{
- SilcProtocol protocol = (SilcProtocol)context;
- SilcServerConnAuthInternalContext *ctx =
- (SilcServerConnAuthInternalContext *)protocol->context;
- SilcServer server = (SilcServer)ctx->server;
- SilcServerConnection sconn = (SilcServerConnection)ctx->context;
- SilcSocketConnection sock = ctx->sock;
- SilcServerEntry id_entry;
- SilcBuffer packet;
- SilcServerHBContext hb_context;
- unsigned char *id_string;
- uint32 id_len;
+ SilcList list;
+ SilcIDCacheEntry cache;
SilcIDListData idata;
- SILC_LOG_DEBUG(("Start"));
+ SILC_LOG_DEBUG(("Free server %p", server));
- if (protocol->state == SILC_PROTOCOL_STATE_ERROR ||
- protocol->state == SILC_PROTOCOL_STATE_FAILURE) {
- /* Error occured during protocol */
- silc_free(ctx->dest_id);
- silc_server_disconnect_remote(server, sock, "Server closed connection: "
- "Authentication failed");
- goto out;
- }
+ if (!server)
+ return;
- /* Add a task to the queue. This task receives new connections to the
- server. This task remains on the queue until the end of the program. */
- if (!server->listenning && !sconn->backup) {
- silc_schedule_task_add(server->schedule, server->sock,
- silc_server_accept_new_connection,
- (void *)server, 0, 0,
- SILC_TASK_FD,
- SILC_TASK_PRI_NORMAL);
- server->listenning = TRUE;
- }
-
- /* Send NEW_SERVER packet to the router. We will become registered
- to the SILC network after sending this packet. */
- id_string = silc_id_id2str(server->id, SILC_ID_SERVER);
- id_len = silc_id_get_len(server->id, SILC_ID_SERVER);
- packet = silc_buffer_alloc(2 + 2 + id_len + strlen(server->server_name));
- silc_buffer_pull_tail(packet, SILC_BUFFER_END(packet));
- silc_buffer_format(packet,
- SILC_STR_UI_SHORT(id_len),
- SILC_STR_UI_XNSTRING(id_string, id_len),
- SILC_STR_UI_SHORT(strlen(server->server_name)),
- SILC_STR_UI_XNSTRING(server->server_name,
- strlen(server->server_name)),
- SILC_STR_END);
-
- /* Send the packet */
- silc_server_packet_send(server, ctx->sock, SILC_PACKET_NEW_SERVER, 0,
- packet->data, packet->len, TRUE);
- silc_buffer_free(packet);
- silc_free(id_string);
-
- SILC_LOG_INFO(("Connected to router %s", sock->hostname));
-
- /* Check that we do not have this ID already */
- id_entry = silc_idlist_find_server_by_id(server->local_list,
- ctx->dest_id, TRUE, NULL);
- if (id_entry) {
- silc_idcache_del_by_context(server->local_list->servers, id_entry);
- } else {
- id_entry = silc_idlist_find_server_by_id(server->global_list,
- ctx->dest_id, TRUE, NULL);
- if (id_entry)
- silc_idcache_del_by_context(server->global_list->servers, id_entry);
+ silc_server_backup_free(server);
+ silc_server_config_unref(&server->config_ref);
+ if (server->rng)
+ silc_rng_free(server->rng);
+ if (server->public_key)
+ silc_pkcs_public_key_free(server->public_key);
+ if (server->private_key)
+ silc_pkcs_private_key_free(server->private_key);
+ if (server->pending_commands)
+ silc_dlist_uninit(server->pending_commands);
+ if (server->id_entry) {
+ if (server->id_entry->data.sconn)
+ silc_schedule_task_del_by_context(server->schedule,
+ server->id_entry->data.sconn->sock);
+ silc_idlist_del_server(server->local_list, server->id_entry);
}
- SILC_LOG_DEBUG(("New server id(%s)",
- silc_id_render(ctx->dest_id, SILC_ID_SERVER)));
-
- /* Add the connected router to global server list */
- id_entry = silc_idlist_add_server(server->global_list,
- strdup(sock->hostname),
- SILC_ROUTER, ctx->dest_id, NULL, sock);
- if (!id_entry) {
- silc_free(ctx->dest_id);
- silc_server_disconnect_remote(server, sock, "Server closed connection: "
- "Authentication failed");
- goto out;
+ /* Delete all channels */
+ if (silc_idcache_get_all(server->local_list->channels, &list)) {
+ silc_list_start(list);
+ while ((cache = silc_list_get(list)))
+ silc_idlist_del_channel(server->local_list, cache->context);
+ }
+ if (silc_idcache_get_all(server->global_list->channels, &list)) {
+ silc_list_start(list);
+ while ((cache = silc_list_get(list)))
+ silc_idlist_del_channel(server->global_list, cache->context);
}
- silc_idlist_add_data(id_entry, (SilcIDListData)sock->user_data);
- silc_free(sock->user_data);
- sock->user_data = (void *)id_entry;
- sock->type = SILC_SOCKET_TYPE_ROUTER;
- idata = (SilcIDListData)sock->user_data;
- idata->status |= SILC_IDLIST_STATUS_REGISTERED;
-
- /* Perform keepalive. The `hb_context' will be freed automatically
- when finally calling the silc_socket_free function. XXX hardcoded
- timeout!! */
- hb_context = silc_calloc(1, sizeof(*hb_context));
- hb_context->server = server;
- silc_socket_set_heartbeat(sock, 600, hb_context,
- silc_server_perform_heartbeat,
- server->schedule);
-
- /* Register re-key timeout */
- idata->rekey->timeout = 3600; /* XXX hardcoded */
- idata->rekey->context = (void *)server;
- silc_schedule_task_add(server->schedule, sock->sock,
- silc_server_rekey_callback,
- (void *)sock, idata->rekey->timeout, 0,
- SILC_TASK_TIMEOUT, SILC_TASK_PRI_NORMAL);
-
- if (!sconn->backup) {
- /* Mark this router our primary router if we're still standalone */
- if (server->standalone) {
- server->id_entry->router = id_entry;
- server->router = id_entry;
- server->standalone = FALSE;
-
- /* If we are router then announce our possible servers. */
- if (server->server_type == SILC_ROUTER)
- silc_server_announce_servers(server, FALSE, 0,
- server->router->connection);
-
- /* Announce our clients and channels to the router */
- silc_server_announce_clients(server, 0, server->router->connection);
- silc_server_announce_channels(server, 0, server->router->connection);
+ /* Delete all clients */
+ if (silc_idcache_get_all(server->local_list->clients, &list)) {
+ silc_list_start(list);
+ while ((cache = silc_list_get(list))) {
+ silc_schedule_task_del_by_context(server->schedule, cache->context);
+ silc_idlist_del_client(server->local_list, cache->context);
+ }
+ }
+ if (silc_idcache_get_all(server->global_list->clients, &list)) {
+ silc_list_start(list);
+ while ((cache = silc_list_get(list))) {
+ silc_schedule_task_del_by_context(server->schedule, cache->context);
+ silc_idlist_del_client(server->global_list, cache->context);
}
- } else {
- /* Add this server to be our backup router */
- silc_server_backup_add(server, id_entry, sconn->backup_replace_ip,
- sconn->backup_replace_port, FALSE);
}
- sock->protocol = NULL;
-
- /* Call the completion callback to indicate that we've connected to
- the router */
- if (sconn->callback)
- (*sconn->callback)(server, id_entry, sconn->callback_context);
-
- out:
- /* Free the temporary connection data context */
- if (sconn) {
- silc_free(sconn->remote_host);
- silc_free(sconn->backup_replace_ip);
- silc_free(sconn);
+ /* Delete all servers */
+ if (silc_idcache_get_all(server->local_list->servers, &list)) {
+ silc_list_start(list);
+ while ((cache = silc_list_get(list))) {
+ idata = (SilcIDListData)cache->context;
+ if (idata->sconn)
+ silc_schedule_task_del_by_context(server->schedule,
+ idata->sconn->sock);
+ silc_idlist_del_server(server->local_list, cache->context);
+ }
+ }
+ if (silc_idcache_get_all(server->global_list->servers, &list)) {
+ while ((cache = silc_list_get(list))) {
+ idata = (SilcIDListData)cache->context;
+ if (idata->sconn)
+ silc_schedule_task_del_by_context(server->schedule,
+ idata->sconn->sock);
+ silc_idlist_del_server(server->global_list, cache->context);
+ }
}
- if (sconn == server->router_conn)
- server->router_conn = NULL;
- /* Free the protocol object */
- if (sock->protocol == protocol)
- sock->protocol = NULL;
- silc_protocol_free(protocol);
- if (ctx->packet)
- silc_packet_context_free(ctx->packet);
- if (ctx->ske)
- silc_ske_free(ctx->ske);
- silc_free(ctx->auth_data);
- silc_free(ctx);
+ silc_schedule_task_del_by_context(server->schedule, server);
+ silc_schedule_uninit(server->schedule);
+ server->schedule = NULL;
+
+ silc_idcache_free(server->local_list->clients);
+ silc_idcache_free(server->local_list->servers);
+ silc_idcache_free(server->local_list->channels);
+ silc_idcache_free(server->global_list->clients);
+ silc_idcache_free(server->global_list->servers);
+ silc_idcache_free(server->global_list->channels);
+ silc_hash_table_free(server->watcher_list);
+ silc_hash_table_free(server->watcher_list_pk);
+ silc_hash_free(server->md5hash);
+ silc_hash_free(server->sha1hash);
+
+ silc_dlist_uninit(server->listeners);
+ silc_dlist_uninit(server->conns);
+ silc_dlist_uninit(server->expired_clients);
+ silc_skr_free(server->repository);
+ silc_packet_engine_stop(server->packet_engine);
+
+ silc_free(server->local_list);
+ silc_free(server->global_list);
+ silc_free(server->server_name);
+ silc_free(server);
+
+ silc_hmac_unregister_all();
+ silc_hash_unregister_all();
+ silc_cipher_unregister_all();
+ silc_pkcs_unregister_all();
}
-/* Host lookup callbcak that is called after the incoming connection's
- IP and FQDN lookup is performed. This will actually check the acceptance
- of the incoming connection and will register the key exchange protocol
- for this connection. */
+/* Creates a new server listener. */
-static void
-silc_server_accept_new_connection_lookup(SilcSocketConnection sock,
- void *context)
+static SilcNetListener
+silc_server_listen(SilcServer server, const char *server_ip, SilcUInt16 port)
{
- SilcServer server = (SilcServer)context;
- SilcServerKEInternalContext *proto_ctx;
- void *cconfig, *sconfig, *rconfig;
- SilcServerConfigSectionDenyConnection *deny;
- int port;
-
- SILC_LOG_DEBUG(("Start"));
-
- /* Check whether we could resolve both IP and FQDN. */
- if (!sock->ip || (!strcmp(sock->ip, sock->hostname) &&
- server->params->require_reverse_mapping)) {
- SILC_LOG_ERROR(("IP/DNS lookup failed %s",
- sock->hostname ? sock->hostname :
- sock->ip ? sock->ip : ""));
- server->stat.conn_failures++;
- silc_server_disconnect_remote(server, sock,
- "Server closed connection: Unknown host");
- return;
+ SilcNetListener listener;
+
+ listener =
+ silc_net_tcp_create_listener(&server_ip, 1, port, TRUE,
+ server->config->require_reverse_lookup,
+ server->schedule,
+ silc_server_accept_new_connection, server);
+ if (!listener) {
+ SILC_SERVER_LOG_ERROR(("Could not create server listener: %s on %hu",
+ server_ip, port));
+ return NULL;
}
- /* Register the connection for network input and output. This sets
- that scheduler will listen for incoming packets for this connection
- and sets that outgoing packets may be sent to this connection as well.
- However, this doesn't set the scheduler for outgoing traffic, it
- will be set separately by calling SILC_SET_CONNECTION_FOR_OUTPUT,
- later when outgoing data is available. */
- SILC_REGISTER_CONNECTION_FOR_IO(sock->sock);
-
- SILC_LOG_INFO(("Incoming connection from %s (%s)", sock->hostname,
- sock->ip));
-
- port = server->sockets[server->sock]->port; /* Listenning port */
+ return listener;
+}
- /* Check whether this connection is denied to connect to us. */
- deny = silc_server_config_denied_conn(server->config, sock->ip, port);
- if (!deny)
- deny = silc_server_config_denied_conn(server->config, sock->hostname,
- port);
- if (deny) {
- /* The connection is denied */
- SILC_LOG_INFO(("Connection %s (%s) is denied",
- sock->hostname, sock->ip));
- silc_server_disconnect_remote(server, sock, deny->comment ?
- deny->comment :
- "Server closed connection: "
- "Connection refused");
- server->stat.conn_failures++;
- return;
- }
+/* Adds a secondary listener. */
- /* Check whether we have configred this sort of connection at all. We
- have to check all configurations since we don't know what type of
- connection this is. */
- if (!(cconfig = silc_server_config_find_client_conn(server->config,
- sock->ip, port)))
- cconfig = silc_server_config_find_client_conn(server->config,
- sock->hostname,
- port);
- if (!(sconfig = silc_server_config_find_server_conn(server->config,
- sock->ip,
- port)))
- sconfig = silc_server_config_find_server_conn(server->config,
- sock->hostname,
- port);
- if (!(rconfig = silc_server_config_find_router_conn(server->config,
- sock->ip, port)))
- rconfig = silc_server_config_find_router_conn(server->config,
- sock->hostname,
- port);
- if (!cconfig && !sconfig && !rconfig) {
- silc_server_disconnect_remote(server, sock,
- "Server closed connection: "
- "Connection refused");
- server->stat.conn_failures++;
- return;
+SilcBool silc_server_init_secondary(SilcServer server)
+{
+ SilcServerConfigServerInfoInterface *interface;
+ SilcNetListener listener;
+
+ for (interface = server->config->server_info->secondary; interface;
+ interface = interface->next) {
+ listener = silc_server_listen(server, interface->server_ip,
+ interface->port);
+ if (!listener)
+ return FALSE;
+ silc_dlist_add(server->listeners, listener);
}
- /* The connection is allowed */
-
- /* Allocate internal context for key exchange protocol. This is
- sent as context for the protocol. */
- proto_ctx = silc_calloc(1, sizeof(*proto_ctx));
- proto_ctx->server = context;
- proto_ctx->sock = sock;
- proto_ctx->rng = server->rng;
- proto_ctx->responder = TRUE;
- proto_ctx->cconfig = cconfig;
- proto_ctx->sconfig = sconfig;
- proto_ctx->rconfig = rconfig;
-
- /* Prepare the connection for key exchange protocol. We allocate the
- protocol but will not start it yet. The connector will be the
- initiator of the protocol thus we will wait for initiation from
- there before we start the protocol. */
- server->stat.auth_attempts++;
- silc_protocol_alloc(SILC_PROTOCOL_SERVER_KEY_EXCHANGE,
- &sock->protocol, proto_ctx,
- silc_server_accept_new_connection_second);
-
- /* Register a timeout task that will be executed if the connector
- will not start the key exchange protocol within 60 seconds. For
- now, this is a hard coded limit. After 60 secs the connection will
- be closed if the key exchange protocol has not been started. */
- proto_ctx->timeout_task =
- silc_schedule_task_add(server->schedule, sock->sock,
- silc_server_timeout_remote,
- context, 60, 0,
- SILC_TASK_TIMEOUT,
- SILC_TASK_PRI_LOW);
+ return TRUE;
}
-/* Accepts new connections to the server. Accepting new connections are
- done in three parts to make it async. */
+/* Initializes the entire SILC server. This is called always before running
+ the server. This is called only once at the initialization of the program.
+ This binds the server to its listenning port. After this function returns
+ one should call silc_server_run to start the server. This returns TRUE
+ when everything is ok to run the server. Configuration file must be
+ read and parsed before calling this. */
-SILC_TASK_CALLBACK(silc_server_accept_new_connection)
+SilcBool silc_server_init(SilcServer server)
{
- SilcServer server = (SilcServer)context;
- SilcSocketConnection newsocket;
- int sock;
+ SilcServerID *id;
+ SilcServerEntry id_entry;
+ SilcNetListener listener;
+ SilcUInt16 *port;
+ char **ip;
- SILC_LOG_DEBUG(("Accepting new connection"));
+ SILC_LOG_DEBUG(("Initializing server"));
- server->stat.conn_attempts++;
+ server->starttime = time(NULL);
- sock = silc_net_accept_connection(server->sock);
- if (sock < 0) {
- SILC_LOG_ERROR(("Could not accept new connection: %s", strerror(errno)));
- server->stat.conn_failures++;
- return;
- }
+ /* Take config object for us */
+ silc_server_config_ref(&server->config_ref, server->config,
+ server->config);
- /* Check max connections */
- if (sock > SILC_SERVER_MAX_CONNECTIONS) {
- SILC_LOG_ERROR(("Refusing connection, server is full"));
- server->stat.conn_failures++;
- return;
+#ifdef SILC_DEBUG
+ /* Set debugging on if configured */
+ if (server->config->debug_string) {
+ silc_log_debug(TRUE);
+ silc_log_set_debug_string(server->config->debug_string);
}
+#endif /* SILC_DEBUG */
- /* Set socket options */
- silc_net_set_socket_nonblock(sock);
- silc_net_set_socket_opt(sock, SOL_SOCKET, SO_REUSEADDR, 1);
-
- /* We don't create a ID yet, since we don't know what type of connection
- this is yet. But, we do add the connection to the socket table. */
- silc_socket_alloc(sock, SILC_SOCKET_TYPE_UNKNOWN, NULL, &newsocket);
- server->sockets[sock] = newsocket;
+ /* Steal public and private key from the config object */
+ server->public_key = server->config->server_info->public_key;
+ server->private_key = server->config->server_info->private_key;
+ server->config->server_info->public_key = NULL;
+ server->config->server_info->private_key = NULL;
- /* Perform asynchronous host lookup. This will lookup the IP and the
- FQDN of the remote connection. After the lookup is done the connection
- is accepted further. */
- silc_socket_host_lookup(newsocket, TRUE,
- silc_server_accept_new_connection_lookup, context,
- server->schedule);
-}
+ /* Register all configured ciphers, PKCS and hash functions. */
+ if (!silc_server_config_register_ciphers(server))
+ silc_cipher_register_default();
+ if (!silc_server_config_register_pkcs(server))
+ silc_pkcs_register_default();
+ if (!silc_server_config_register_hashfuncs(server))
+ silc_hash_register_default();
+ if (!silc_server_config_register_hmacs(server))
+ silc_hmac_register_default();
-/* Second part of accepting new connection. Key exchange protocol has been
- performed and now it is time to do little connection authentication
- protocol to figure out whether this connection is client or server
- and whether it has right to access this server (especially server
- connections needs to be authenticated). */
+ /* Initialize random number generator for the server. */
+ server->rng = silc_rng_alloc();
+ silc_rng_init(server->rng);
+ silc_rng_global_init(server->rng);
-SILC_TASK_CALLBACK(silc_server_accept_new_connection_second)
-{
- SilcProtocol protocol = (SilcProtocol)context;
- SilcServerKEInternalContext *ctx =
- (SilcServerKEInternalContext *)protocol->context;
- SilcServer server = (SilcServer)ctx->server;
- SilcSocketConnection sock = ctx->sock;
- SilcServerConnAuthInternalContext *proto_ctx;
+ /* Initialize hash functions for server to use */
+ silc_hash_alloc("md5", &server->md5hash);
+ silc_hash_alloc("sha1", &server->sha1hash);
- SILC_LOG_DEBUG(("Start"));
+ /* Initialize the scheduler */
+ server->schedule = silc_schedule_init(server->config->param.connections_max,
+ server);
+ if (!server->schedule)
+ goto err;
- if (protocol->state == SILC_PROTOCOL_STATE_ERROR ||
- protocol->state == SILC_PROTOCOL_STATE_FAILURE) {
- /* Error occured during protocol */
- silc_protocol_free(protocol);
- sock->protocol = NULL;
- silc_ske_free_key_material(ctx->keymat);
- if (ctx->packet)
- silc_packet_context_free(ctx->packet);
- if (ctx->ske)
- silc_ske_free(ctx->ske);
- silc_free(ctx->dest_id);
- silc_free(ctx);
- silc_schedule_task_del_by_callback(server->schedule,
- silc_server_failure_callback);
- silc_server_disconnect_remote(server, sock, "Server closed connection: "
- "Key exchange failed");
- server->stat.auth_failures++;
- return;
+ /* First, register log files configuration for error output */
+ silc_server_config_setlogfiles(server);
+
+ /* Initialize ID caches */
+ server->local_list->clients =
+ silc_idcache_alloc(0, SILC_ID_CLIENT, silc_idlist_client_destructor,
+ server);
+ server->local_list->servers =
+ silc_idcache_alloc(0, SILC_ID_SERVER, silc_idlist_server_destructor,
+ server);
+ server->local_list->channels =
+ silc_idcache_alloc(0, SILC_ID_CHANNEL, silc_idlist_channel_destructor,
+ NULL);
+
+ /* These are allocated for normal server as well as these hold some
+ global information that the server has fetched from its router. For
+ router these are used as they are supposed to be used on router. */
+ server->global_list->clients =
+ silc_idcache_alloc(0, SILC_ID_CLIENT, silc_idlist_client_destructor,
+ server);
+ server->global_list->servers =
+ silc_idcache_alloc(0, SILC_ID_SERVER, silc_idlist_server_destructor,
+ server);
+ server->global_list->channels =
+ silc_idcache_alloc(0, SILC_ID_CHANNEL, silc_idlist_channel_destructor,
+ NULL);
+
+ /* Init watcher lists */
+ server->watcher_list =
+ silc_hash_table_alloc(1, silc_hash_client_id_hash, NULL,
+ silc_hash_data_compare, (void *)CLIENTID_HASH_LEN,
+ NULL, NULL, TRUE);
+ if (!server->watcher_list)
+ goto err;
+ server->watcher_list_pk =
+ silc_hash_table_alloc(1, silc_hash_public_key, NULL,
+ silc_hash_public_key_compare, NULL,
+ NULL, NULL, TRUE);
+ if (!server->watcher_list_pk)
+ goto err;
+
+ /* Create TCP listener */
+ listener = silc_server_listen(
+ server,
+ server->config->server_info->primary == NULL ? NULL :
+ server->config->server_info->primary->server_ip,
+ server->config->server_info->primary == NULL ? 0 :
+ server->config->server_info->primary->port);
+ if (!listener)
+ goto err;
+ silc_dlist_add(server->listeners, listener);
+
+ /* Create a Server ID for the server. */
+ port = silc_net_listener_get_port(listener, NULL);
+ ip = silc_net_listener_get_ip(listener, NULL);
+ silc_id_create_server_id(server->config->server_info->primary->public_ip ?
+ server->config->server_info->primary->public_ip :
+ ip[0], port[0], server->rng, &id);
+ if (!id)
+ goto err;
+
+ silc_free(port);
+ silc_free(ip[0]);
+ silc_free(ip);
+
+ server->id = id;
+ server->server_name = server->config->server_info->server_name;
+ server->config->server_info->server_name = NULL;
+ silc_id_id2str(server->id, SILC_ID_SERVER, server->id_string,
+ sizeof(server->id_string), &server->id_string_len);
+
+ /* Add ourselves to the server list. We don't have a router yet
+ beacuse we haven't established a route yet. It will be done later.
+ For now, NULL is sent as router. This allocates new entry to
+ the ID list. */
+ id_entry =
+ silc_idlist_add_server(server->local_list, strdup(server->server_name),
+ server->server_type,
+ silc_id_dup(server->id, SILC_ID_SERVER),
+ NULL, NULL);
+ if (!id_entry) {
+ SILC_LOG_ERROR(("Could not add local server to cache"));
+ goto err;
}
+ id_entry->data.status |= SILC_IDLIST_STATUS_REGISTERED;
+ id_entry->data.conn_type = (server->server_type == SILC_SERVER ?
+ SILC_CONN_SERVER : SILC_CONN_ROUTER);
+ server->id_entry = id_entry;
- /* We now have the key material as the result of the key exchange
- protocol. Take the key material into use. Free the raw key material
- as soon as we've set them into use. */
- if (!silc_server_protocol_ke_set_keys(server, ctx->ske,
- ctx->sock, ctx->keymat,
- ctx->ske->prop->cipher,
- ctx->ske->prop->pkcs,
- ctx->ske->prop->hash,
- ctx->ske->prop->hmac,
- ctx->ske->prop->group,
- ctx->responder)) {
- silc_protocol_free(protocol);
- sock->protocol = NULL;
- silc_ske_free_key_material(ctx->keymat);
- if (ctx->packet)
- silc_packet_context_free(ctx->packet);
- if (ctx->ske)
- silc_ske_free(ctx->ske);
- silc_free(ctx->dest_id);
- silc_free(ctx);
- silc_schedule_task_del_by_callback(server->schedule,
- silc_server_failure_callback);
- silc_server_disconnect_remote(server, sock, "Server closed connection: "
- "Key exchange failed");
- server->stat.auth_failures++;
- return;
- }
- silc_ske_free_key_material(ctx->keymat);
-
- /* Allocate internal context for the authentication protocol. This
- is sent as context for the protocol. */
- proto_ctx = silc_calloc(1, sizeof(*proto_ctx));
- proto_ctx->server = (void *)server;
- proto_ctx->sock = sock;
- proto_ctx->ske = ctx->ske; /* Save SKE object from previous protocol */
- proto_ctx->responder = TRUE;
- proto_ctx->dest_id_type = ctx->dest_id_type;
- proto_ctx->dest_id = ctx->dest_id;
- proto_ctx->cconfig = ctx->cconfig;
- proto_ctx->sconfig = ctx->sconfig;
- proto_ctx->rconfig = ctx->rconfig;
-
- /* Free old protocol as it is finished now */
- silc_protocol_free(protocol);
- if (ctx->packet)
- silc_packet_context_free(ctx->packet);
- silc_free(ctx);
- sock->protocol = NULL;
-
- /* Allocate the authentication protocol. This is allocated here
- but we won't start it yet. We will be receiving party of this
- protocol thus we will wait that connecting party will make
- their first move. */
- silc_protocol_alloc(SILC_PROTOCOL_SERVER_CONNECTION_AUTH,
- &sock->protocol, proto_ctx,
- silc_server_accept_new_connection_final);
-
- /* Register timeout task. If the protocol is not executed inside
- this timelimit the connection will be terminated. Currently
- this is 60 seconds and is hard coded limit (XXX). */
- proto_ctx->timeout_task =
- silc_schedule_task_add(server->schedule, sock->sock,
- silc_server_timeout_remote,
- (void *)server, 60, 0,
- SILC_TASK_TIMEOUT,
- SILC_TASK_PRI_LOW);
-}
+ /* Create secondary TCP listeners */
+ if (silc_server_init_secondary(server) == FALSE)
+ goto err;
-/* Final part of accepting new connection. The connection has now
- been authenticated and keys has been exchanged. We also know whether
- this is client or server connection. */
+ server->listenning = TRUE;
-SILC_TASK_CALLBACK(silc_server_accept_new_connection_final)
-{
- SilcProtocol protocol = (SilcProtocol)context;
- SilcServerConnAuthInternalContext *ctx =
- (SilcServerConnAuthInternalContext *)protocol->context;
- SilcServer server = (SilcServer)ctx->server;
- SilcSocketConnection sock = ctx->sock;
- SilcServerHBContext hb_context;
- SilcUnknownEntry entry = (SilcUnknownEntry)sock->user_data;
- void *id_entry = NULL;
+ /* Create connections to configured routers. */
+ silc_server_create_connections(server);
- SILC_LOG_DEBUG(("Start"));
+ /* If server connections has been configured then we must be router as
+ normal server cannot have server connections, only router connections. */
+ if (server->config->servers) {
+ SilcServerConfigServer *ptr = server->config->servers;
- if (protocol->state == SILC_PROTOCOL_STATE_ERROR ||
- protocol->state == SILC_PROTOCOL_STATE_FAILURE) {
- /* Error occured during protocol */
- silc_protocol_free(protocol);
- sock->protocol = NULL;
- if (ctx->packet)
- silc_packet_context_free(ctx->packet);
- if (ctx->ske)
- silc_ske_free(ctx->ske);
- silc_free(ctx->dest_id);
- silc_free(ctx);
- silc_schedule_task_del_by_callback(server->schedule,
- silc_server_failure_callback);
- silc_server_disconnect_remote(server, sock, "Server closed connection: "
- "Authentication failed");
- server->stat.auth_failures++;
- return;
+ server->server_type = SILC_ROUTER;
+ while (ptr) {
+ if (ptr->backup_router) {
+ server->server_type = SILC_BACKUP_ROUTER;
+ server->backup_router = TRUE;
+ server->id_entry->server_type = SILC_BACKUP_ROUTER;
+ break;
+ }
+ ptr = ptr->next;
+ }
}
- entry->data.last_receive = time(NULL);
+ if (server->server_type != SILC_ROUTER) {
+ server->stat.servers = 1;
+ server->stat.cell_servers = 1;
+ } else {
+ server->stat.routers = 1;
+ }
- switch (ctx->conn_type) {
- case SILC_SOCKET_TYPE_CLIENT:
- {
- SilcClientEntry client;
+ /* If we are normal server we'll retrieve network statisticial information
+ once in a while from the router. */
+ if (server->server_type != SILC_ROUTER)
+ silc_schedule_task_add_timeout(server->schedule, silc_server_get_stats,
+ server, 10, 0);
- SILC_LOG_DEBUG(("Remote host is client"));
- SILC_LOG_INFO(("Connection from %s (%s) is client", sock->hostname,
- sock->ip));
+ /* Start packet engine */
+ server->packet_engine =
+ silc_packet_engine_start(server->rng, server->server_type == SILC_ROUTER,
+ &silc_server_stream_cbs, server);
+ if (!server->packet_engine)
+ goto err;
- /* Add the client to the client ID cache. The nickname and Client ID
- and other information is created after we have received NEW_CLIENT
- packet from client. */
- client = silc_idlist_add_client(server->local_list,
- NULL, NULL, NULL, NULL, NULL, sock, 0);
- if (!client) {
- SILC_LOG_ERROR(("Could not add new client to cache"));
- silc_free(sock->user_data);
- silc_server_disconnect_remote(server, sock,
- "Server closed connection: "
- "Authentication failed");
- server->stat.auth_failures++;
- goto out;
- }
+ /* Register client entry expiration timeout */
+ silc_schedule_task_add_timeout(server->schedule,
+ silc_server_purge_expired_clients, server,
+ 120, 0);
- /* Statistics */
- server->stat.my_clients++;
- server->stat.clients++;
- if (server->server_type == SILC_ROUTER)
- server->stat.cell_clients++;
+ /* Initialize HTTP server */
+ silc_server_http_init(server);
- id_entry = (void *)client;
- break;
+ SILC_LOG_DEBUG(("Server initialized"));
+
+ /* We are done here, return succesfully */
+ return TRUE;
+
+ err:
+ silc_server_config_unref(&server->config_ref);
+ return FALSE;
+}
+
+/* Task callback to close a socket connection after rehash */
+
+SILC_TASK_CALLBACK(silc_server_rehash_close_connection)
+{
+ SilcServer server = app_context;
+ SilcPacketStream sock = context;
+ SilcIDListData idata = silc_packet_get_context(sock);
+ const char *hostname;
+ SilcUInt16 port;
+
+ silc_socket_stream_get_info(silc_packet_stream_get_stream(sock),
+ NULL, &hostname, NULL, &port);
+
+ SILC_LOG_INFO(("Connection %s:%d [%s] is unconfigured",
+ hostname, port, SILC_CONNTYPE_STRING(idata->conn_type)));
+ silc_schedule_task_del_by_context(server->schedule, sock);
+ silc_server_disconnect_remote(server, sock,
+ SILC_STATUS_ERR_BANNED_FROM_SERVER,
+ "This connection is removed from "
+ "configuration");
+ silc_server_free_sock_user_data(server, sock, NULL);
+}
+
+/* This function basically reads the config file again and switches the config
+ object pointed by the server object. After that, we have to fix various
+ things such as the server_name and the listening ports.
+ Keep in mind that we no longer have the root privileges at this point. */
+
+SilcBool silc_server_rehash(SilcServer server)
+{
+ SilcServerConfig newconfig;
+
+ SILC_LOG_INFO(("Rehashing server"));
+
+ /* Reset the logging system */
+ silc_log_quick(TRUE);
+ silc_log_flush_all();
+
+ /* Start the main rehash phase (read again the config file) */
+ newconfig = silc_server_config_alloc(server->config_file, server);
+ if (!newconfig) {
+ SILC_LOG_ERROR(("Rehash FAILED."));
+ return FALSE;
+ }
+
+ /* Fix the server_name field */
+ if (strcmp(server->server_name, newconfig->server_info->server_name)) {
+ silc_free(server->server_name);
+
+ /* Check server name */
+ server->server_name =
+ silc_identifier_check(newconfig->server_info->server_name,
+ strlen(newconfig->server_info->server_name),
+ SILC_STRING_LOCALE, 256, NULL);
+ if (!server->server_name) {
+ SILC_LOG_ERROR(("Malformed server name string '%s'",
+ server->config->server_info->server_name));
+ return FALSE;
}
- case SILC_SOCKET_TYPE_SERVER:
- case SILC_SOCKET_TYPE_ROUTER:
- {
- SilcServerEntry new_server;
- SilcServerConfigSectionServerConnection *conn =
- ctx->conn_type == SILC_SOCKET_TYPE_SERVER ?
- ctx->sconfig : ctx->rconfig;
- SILC_LOG_DEBUG(("Remote host is %s",
- ctx->conn_type == SILC_SOCKET_TYPE_SERVER ?
- "server" : (conn->backup_router ?
- "backup router" : "router")));
- SILC_LOG_INFO(("Connection from %s (%s) is %s", sock->hostname,
- sock->ip, ctx->conn_type == SILC_SOCKET_TYPE_SERVER ?
- "server" : (conn->backup_router ?
- "backup router" : "router")));
+ /* Update the idcache list with a fresh pointer */
+ silc_free(server->id_entry->server_name);
+ server->id_entry->server_name = strdup(server->server_name);
+ silc_idcache_update_by_context(server->local_list->servers,
+ server->id_entry, NULL,
+ strdup(server->id_entry->server_name),
+ TRUE);
+ }
- /* Add the server into server cache. The server name and Server ID
- is updated after we have received NEW_SERVER packet from the
- server. We mark ourselves as router for this server if we really
- are router. */
- new_server =
- silc_idlist_add_server((ctx->conn_type == SILC_SOCKET_TYPE_SERVER ?
- server->local_list : (conn->backup_router ?
- server->local_list :
- server->global_list)),
- NULL,
- (ctx->conn_type == SILC_SOCKET_TYPE_SERVER ?
- SILC_SERVER : SILC_ROUTER),
- NULL,
- (ctx->conn_type == SILC_SOCKET_TYPE_SERVER ?
- server->id_entry : (conn->backup_router ?
- server->id_entry : NULL)),
- sock);
- if (!new_server) {
- SILC_LOG_ERROR(("Could not add new server to cache"));
- silc_free(sock->user_data);
- silc_server_disconnect_remote(server, sock,
- "Server closed connection: "
- "Authentication failed");
- server->stat.auth_failures++;
- goto out;
- }
+ /* Set logging */
+ silc_server_config_setlogfiles(server);
+
+ /* Change new key pair if necessary */
+ if (newconfig->server_info->public_key &&
+ !silc_pkcs_public_key_compare(server->public_key,
+ newconfig->server_info->public_key)) {
+ silc_pkcs_public_key_free(server->public_key);
+ silc_pkcs_private_key_free(server->private_key);
+ server->public_key = newconfig->server_info->public_key;
+ server->private_key = newconfig->server_info->private_key;
+ newconfig->server_info->public_key = NULL;
+ newconfig->server_info->private_key = NULL;
+ }
- /* Statistics */
- if (ctx->conn_type == SILC_SOCKET_TYPE_SERVER)
- server->stat.my_servers++;
- else
- server->stat.my_routers++;
- server->stat.servers++;
+ /* Check for unconfigured server and router connections and close
+ connections that were unconfigured. */
- id_entry = (void *)new_server;
+ if (server->config->routers) {
+ SilcServerConfigRouter *ptr;
+ SilcServerConfigRouter *newptr;
+ SilcBool found;
- /* If the incoming connection is router and marked as backup router
- then add it to be one of our backups */
- if (ctx->conn_type == SILC_SOCKET_TYPE_ROUTER && conn->backup_router) {
- silc_server_backup_add(server, new_server, conn->backup_replace_ip,
- conn->backup_replace_port, conn->backup_local);
+ for (ptr = server->config->routers; ptr; ptr = ptr->next) {
+ found = FALSE;
- /* Change it back to SERVER type since that's what it really is. */
- if (conn->backup_local)
- ctx->conn_type = SILC_SOCKET_TYPE_SERVER;
+ /* Check whether new config has this one too */
+ for (newptr = newconfig->routers; newptr; newptr = newptr->next) {
+ if (silc_string_compare(newptr->host, ptr->host) &&
+ newptr->port == ptr->port &&
+ newptr->initiator == ptr->initiator) {
+ found = TRUE;
+ break;
+ }
+ }
- new_server->server_type = SILC_BACKUP_ROUTER;
+ if (!found && ptr->host) {
+ /* Remove this connection */
+ SilcPacketStream sock;
+ sock = silc_server_find_socket_by_host(server, SILC_CONN_ROUTER,
+ ptr->host, ptr->port);
+ if (sock)
+ silc_schedule_task_add_timeout(server->schedule,
+ silc_server_rehash_close_connection,
+ sock, 0, 1);
}
+ }
+ }
- /* Check whether this connection is to be our primary router connection
- if we do not already have the primary route. */
- if (server->standalone && ctx->conn_type == SILC_SOCKET_TYPE_ROUTER) {
- if (silc_server_config_is_primary_route(server->config) &&
- !conn->initiator)
+ if (server->config->servers) {
+ SilcServerConfigServer *ptr;
+ SilcServerConfigServer *newptr;
+ SilcBool found;
+
+ for (ptr = server->config->servers; ptr; ptr = ptr->next) {
+ found = FALSE;
+
+ /* Check whether new config has this one too */
+ for (newptr = newconfig->servers; newptr; newptr = newptr->next) {
+ if (silc_string_compare(newptr->host, ptr->host)) {
+ found = TRUE;
break;
+ }
+ }
- SILC_LOG_DEBUG(("We are not standalone server anymore"));
- server->standalone = FALSE;
- if (!server->id_entry->router) {
- server->id_entry->router = id_entry;
- server->router = id_entry;
+ if (!found && ptr->host) {
+ /* Remove this connection */
+ SilcPacketStream sock;
+ sock = silc_server_find_socket_by_host(server, SILC_CONN_SERVER,
+ ptr->host, 0);
+ if (sock)
+ silc_schedule_task_add_timeout(server->schedule,
+ silc_server_rehash_close_connection,
+ sock, 0, 1);
+ }
+ }
+ }
+
+ if (server->config->clients) {
+ SilcServerConfigClient *ptr;
+ SilcServerConfigClient *newptr;
+ SilcBool found;
+
+ for (ptr = server->config->clients; ptr; ptr = ptr->next) {
+ found = FALSE;
+
+ /* Check whether new config has this one too */
+ for (newptr = newconfig->clients; newptr; newptr = newptr->next) {
+ if (silc_string_compare(newptr->host, ptr->host)) {
+ found = TRUE;
+ break;
}
}
- break;
+ if (!found && ptr->host) {
+ /* Remove this connection */
+ SilcPacketStream sock;
+ sock = silc_server_find_socket_by_host(server, SILC_CONN_CLIENT,
+ ptr->host, 0);
+ if (sock)
+ silc_schedule_task_add_timeout(server->schedule,
+ silc_server_rehash_close_connection,
+ sock, 0, 1);
+ }
}
- default:
- break;
}
- sock->type = ctx->conn_type;
+ /* Create connections after rehash */
+ silc_server_create_connections(server);
- /* Add the common data structure to the ID entry. */
- if (id_entry)
- silc_idlist_add_data(id_entry, (SilcIDListData)sock->user_data);
-
- /* Add to sockets internal pointer for fast referencing */
- silc_free(sock->user_data);
- sock->user_data = id_entry;
+ /* Check whether our router status has changed */
+ if (newconfig->servers) {
+ SilcServerConfigServer *ptr = newconfig->servers;
- /* Connection has been fully established now. Everything is ok. */
- SILC_LOG_DEBUG(("New connection authenticated"));
+ server->server_type = SILC_ROUTER;
+ while (ptr) {
+ if (ptr->backup_router) {
+ server->server_type = SILC_BACKUP_ROUTER;
+ server->backup_router = TRUE;
+ server->id_entry->server_type = SILC_BACKUP_ROUTER;
+ break;
+ }
+ ptr = ptr->next;
+ }
+ }
- /* Perform keepalive. The `hb_context' will be freed automatically
- when finally calling the silc_socket_free function. XXX hardcoded
- timeout!! */
- hb_context = silc_calloc(1, sizeof(*hb_context));
- hb_context->server = server;
- silc_socket_set_heartbeat(sock, 600, hb_context,
- silc_server_perform_heartbeat,
- server->schedule);
+ /* Our old config is gone now. We'll unreference our reference made in
+ silc_server_init and then destroy it since we are destroying it
+ underneath the application (layer which called silc_server_init). */
+ silc_server_config_unref(&server->config_ref);
+ silc_server_config_destroy(server->config);
+
+ /* Take new config context */
+ server->config = newconfig;
+ silc_server_config_ref(&server->config_ref, server->config, server->config);
+
+#ifdef SILC_DEBUG
+ /* Set debugging on if configured */
+ if (server->config->debug_string) {
+ silc_log_debug(TRUE);
+ silc_log_set_debug_string(server->config->debug_string);
+ }
+#endif /* SILC_DEBUG */
- out:
- silc_schedule_task_del_by_callback(server->schedule,
- silc_server_failure_callback);
- silc_protocol_free(protocol);
- if (ctx->packet)
- silc_packet_context_free(ctx->packet);
- if (ctx->ske)
- silc_ske_free(ctx->ske);
- silc_free(ctx->dest_id);
- silc_free(ctx);
- sock->protocol = NULL;
+ SILC_LOG_DEBUG(("Server rehashed"));
+
+ return TRUE;
}
-/* This function is used to read packets from network and send packets to
- network. This is usually a generic task. */
+/* The heart of the server. This runs the scheduler thus runs the server.
+ When this returns the server has been stopped and the program will
+ be terminated. */
-SILC_TASK_CALLBACK(silc_server_packet_process)
+void silc_server_run(SilcServer server)
{
- SilcServer server = (SilcServer)context;
- SilcSocketConnection sock = server->sockets[fd];
- SilcIDListData idata;
- SilcCipher cipher = NULL;
- SilcHmac hmac = NULL;
- uint32 sequence = 0;
- int ret;
+ SILC_LOG_INFO(("SILC Server started"));
- if (!sock)
- return;
+ /* Start the scheduler, the heart of the SILC server. When this returns
+ the program will be terminated. */
+ silc_schedule(server->schedule);
+}
- SILC_LOG_DEBUG(("Processing packet"));
+/* Stops the SILC server. This function is used to shutdown the server.
+ This is usually called after the scheduler has returned. After stopping
+ the server one should call silc_server_free. */
- /* Packet sending */
+void silc_server_stop(SilcServer server)
+{
+ SilcDList list;
+ SilcPacketStream ps;
+ SilcNetListener listener;
- if (type == SILC_TASK_WRITE) {
- /* Do not send data to disconnected connection */
- if (SILC_IS_DISCONNECTED(sock))
- return;
+ SILC_LOG_INFO(("SILC Server shutting down"));
- server->stat.packets_sent++;
+ server->server_shutdown = TRUE;
- if (sock->outbuf->data - sock->outbuf->head)
- silc_buffer_push(sock->outbuf, sock->outbuf->data - sock->outbuf->head);
+ /* Close all connections */
+ if (server->packet_engine) {
+ list = silc_packet_engine_get_streams(server->packet_engine);
- /* Send the packet */
- ret = silc_packet_send(sock, TRUE);
+ silc_dlist_start(list);
+ while ((ps = silc_dlist_get(list))) {
+ SilcIDListData idata = silc_packet_get_context(ps);
- /* If returned -2 could not write to connection now, will do
- it later. */
- if (ret == -2)
- return;
+ if (!silc_packet_stream_is_valid(ps))
+ continue;
- if (ret == -1) {
- SILC_LOG_ERROR(("Error sending packet to connection "
- "%s:%d [%s]", sock->hostname, sock->port,
- (sock->type == SILC_SOCKET_TYPE_UNKNOWN ? "Unknown" :
- sock->type == SILC_SOCKET_TYPE_CLIENT ? "Client" :
- sock->type == SILC_SOCKET_TYPE_SERVER ? "Server" :
- "Router")));
- return;
- }
-
- /* The packet has been sent and now it is time to set the connection
- back to only for input. When there is again some outgoing data
- available for this connection it will be set for output as well.
- This call clears the output setting and sets it only for input. */
- SILC_SET_CONNECTION_FOR_INPUT(server->schedule, fd);
- SILC_UNSET_OUTBUF_PENDING(sock);
+ if (idata)
+ idata->status &= ~SILC_IDLIST_STATUS_DISABLED;
- silc_buffer_clear(sock->outbuf);
- return;
+ silc_server_disconnect_remote(server, ps, SILC_STATUS_OK,
+ "Server is shutting down");
+ silc_server_free_sock_user_data(server, ps,
+ "Server is shutting down");
+ }
+ silc_packet_engine_free_streams_list(list);
}
- /* Packet receiving */
+ /* We are not connected to network anymore */
+ server->standalone = TRUE;
- /* Read some data from connection */
- ret = silc_packet_receive(sock);
- if (ret < 0) {
+ silc_dlist_start(server->listeners);
+ while ((listener = silc_dlist_get(server->listeners)))
+ silc_net_close_listener(listener);
- if (ret == -1)
- SILC_LOG_ERROR(("Error receiving packet from connection "
- "%s:%d [%s] %s", sock->hostname, sock->port,
- (sock->type == SILC_SOCKET_TYPE_UNKNOWN ? "Unknown" :
- sock->type == SILC_SOCKET_TYPE_CLIENT ? "Client" :
- sock->type == SILC_SOCKET_TYPE_SERVER ? "Server" :
- "Router"), strerror(errno)));
- return;
- }
-
- /* EOF */
- if (ret == 0) {
- SILC_LOG_DEBUG(("Read EOF"));
-
- /* If connection is disconnecting already we will finally
- close the connection */
- if (SILC_IS_DISCONNECTING(sock)) {
- if (sock->user_data)
- silc_server_free_sock_user_data(server, sock);
- silc_server_close_connection(server, sock);
- return;
- }
-
- SILC_LOG_DEBUG(("Premature EOF from connection %d", sock->sock));
- SILC_SET_DISCONNECTING(sock);
-
- if (sock->user_data)
- silc_server_free_sock_user_data(server, sock);
- else if (server->router_conn && server->router_conn->sock == sock &&
- !server->router && server->standalone)
- silc_schedule_task_add(server->schedule, 0,
- silc_server_connect_to_router,
- server, 1, 0,
- SILC_TASK_TIMEOUT,
- SILC_TASK_PRI_NORMAL);
-
- silc_server_close_connection(server, sock);
- return;
- }
+ silc_server_http_uninit(server);
- /* If connection is disconnecting or disconnected we will ignore
- what we read. */
- if (SILC_IS_DISCONNECTING(sock) || SILC_IS_DISCONNECTED(sock)) {
- SILC_LOG_DEBUG(("Ignoring read data from disonnected connection"));
- return;
- }
+ /* Cancel any possible retry timeouts */
+ silc_schedule_task_del_by_callback(server->schedule,
+ silc_server_connect_router);
+ silc_schedule_task_del_by_callback(server->schedule,
+ silc_server_connect_to_router_retry);
+ silc_schedule_task_del_by_callback(server->schedule,
+ silc_server_connect_to_router);
- server->stat.packets_received++;
+ silc_schedule_stop(server->schedule);
- /* Get keys and stuff from ID entry */
- idata = (SilcIDListData)sock->user_data;
- if (idata) {
- cipher = idata->receive_key;
- hmac = idata->hmac_receive;
- sequence = idata->psn_receive;
- }
-
- /* Process the packet. This will call the parser that will then
- decrypt and parse the packet. */
- silc_packet_receive_process(sock, server->server_type == SILC_ROUTER ?
- TRUE : FALSE, cipher, hmac, sequence,
- silc_server_packet_parse, server);
+ SILC_LOG_DEBUG(("Server stopped"));
}
-
-/* Parses whole packet, received earlier. */
-SILC_TASK_CALLBACK(silc_server_packet_parse_real)
-{
- SilcPacketParserContext *parse_ctx = (SilcPacketParserContext *)context;
- SilcServer server = (SilcServer)parse_ctx->context;
- SilcSocketConnection sock = parse_ctx->sock;
- SilcPacketContext *packet = parse_ctx->packet;
- SilcIDListData idata = (SilcIDListData)sock->user_data;
- int ret;
+/* Purge expired client entries from the server */
- SILC_LOG_DEBUG(("Start"));
+SILC_TASK_CALLBACK(silc_server_purge_expired_clients)
+{
+ SilcServer server = context;
+ SilcClientEntry client;
+ SilcIDList id_list;
+ SilcUInt64 curtime = silc_time();
- /* Parse the packet */
- if (parse_ctx->normal)
- ret = silc_packet_parse(packet, idata ? idata->receive_key : NULL);
- else
- ret = silc_packet_parse_special(packet, idata ? idata->receive_key : NULL);
+ SILC_LOG_DEBUG(("Expire timeout"));
- /* If entry is disabled ignore what we got. */
- if (ret != SILC_PACKET_RESUME_ROUTER &&
- idata && idata->status & SILC_IDLIST_STATUS_DISABLED) {
- SILC_LOG_DEBUG(("Connection is disabled"));
- goto out;
- }
+ silc_dlist_start(server->expired_clients);
+ while ((client = silc_dlist_get(server->expired_clients))) {
+ /* For unregistered clients the created timestamp is actually
+ unregistered timestamp. Make sure client remains in history
+ at least 500 seconds. */
+ if (client->data.created && curtime - client->data.created < 500)
+ continue;
- if (ret == SILC_PACKET_NONE)
- goto out;
+ id_list = (client->data.status & SILC_IDLIST_STATUS_LOCAL ?
+ server->local_list : server->global_list);
- /* Check that the the current client ID is same as in the client's packet. */
- if (sock->type == SILC_SOCKET_TYPE_CLIENT) {
- SilcClientEntry client = (SilcClientEntry)sock->user_data;
- if (client && client->id) {
- void *id = silc_id_str2id(packet->src_id, packet->src_id_len,
- packet->src_id_type);
- if (!id || !SILC_ID_CLIENT_COMPARE(client->id, id)) {
- silc_free(id);
- goto out;
- }
- silc_free(id);
- }
+ silc_idlist_del_data(client);
+ silc_idlist_del_client(id_list, client);
+ silc_dlist_del(server->expired_clients, client);
}
- if (server->server_type == SILC_ROUTER) {
- /* Route the packet if it is not destined to us. Other ID types but
- server are handled separately after processing them. */
- if (!(packet->flags & SILC_PACKET_FLAG_BROADCAST) &&
- packet->dst_id_type == SILC_ID_SERVER &&
- sock->type != SILC_SOCKET_TYPE_CLIENT &&
- memcmp(packet->dst_id, server->id_string, server->id_string_len)) {
-
- /* Route the packet to fastest route for the destination ID */
- void *id = silc_id_str2id(packet->dst_id, packet->dst_id_len,
- packet->dst_id_type);
- if (!id)
- goto out;
- silc_server_packet_route(server,
- silc_server_route_get(server, id,
- packet->dst_id_type),
- packet);
- silc_free(id);
- goto out;
- }
- }
+ silc_schedule_task_add_timeout(server->schedule,
+ silc_server_purge_expired_clients, server,
+ 120, 0);
+}
- /* Parse the incoming packet type */
- silc_server_packet_parse_type(server, sock, packet);
- if (server->server_type == SILC_ROUTER) {
- /* Broadcast packet if it is marked as broadcast packet and it is
- originated from router and we are router. */
- if (sock->type == SILC_SOCKET_TYPE_ROUTER &&
- packet->flags & SILC_PACKET_FLAG_BROADCAST &&
- !server->standalone) {
- /* Broadcast to our primary route */
- silc_server_packet_broadcast(server, server->router->connection, packet);
+/******************************* Connecting *********************************/
- /* If we have backup routers then we need to feed all broadcast
- data to those servers. */
- silc_server_backup_broadcast(server, sock, packet);
- }
- }
+/* Free connection context */
- out:
- silc_packet_context_free(packet);
- silc_free(parse_ctx);
+void silc_server_connection_free(SilcServerConnection sconn)
+{
+ if (!sconn)
+ return;
+ SILC_LOG_DEBUG(("Free connection %p", sconn));
+ silc_dlist_del(sconn->server->conns, sconn);
+ silc_server_config_unref(&sconn->conn);
+ silc_free(sconn->remote_host);
+ silc_free(sconn->backup_replace_ip);
+ silc_free(sconn);
}
-/* Parser callback called by silc_packet_receive_process. This merely
- registers timeout that will handle the actual parsing when appropriate. */
+/* Creates connection to a remote router. */
-bool silc_server_packet_parse(SilcPacketParserContext *parser_context,
- void *context)
+void silc_server_create_connection(SilcServer server,
+ SilcBool reconnect,
+ SilcBool dynamic,
+ const char *remote_host, SilcUInt32 port,
+ SilcServerConnectCallback callback,
+ void *context)
{
- SilcServer server = (SilcServer)context;
- SilcSocketConnection sock = parser_context->sock;
- SilcIDListData idata = (SilcIDListData)sock->user_data;
-
- if (idata)
- idata->psn_receive = parser_context->packet->sequence + 1;
-
- /* If protocol for this connection is key exchange or rekey then we'll
- process all packets synchronously, since there might be packets in
- queue that we are not able to decrypt without first processing the
- packets before them. */
- if ((parser_context->packet->type == SILC_PACKET_REKEY ||
- parser_context->packet->type == SILC_PACKET_REKEY_DONE) ||
- (sock->protocol && sock->protocol->protocol &&
- (sock->protocol->protocol->type == SILC_PROTOCOL_SERVER_KEY_EXCHANGE ||
- sock->protocol->protocol->type == SILC_PROTOCOL_SERVER_REKEY))) {
- silc_server_packet_parse_real(server->schedule, 0, sock->sock,
- parser_context);
-
- /* Reprocess data since we'll return FALSE here. This is because
- the idata->receive_key might have become valid in the last packet
- and we want to call this processor with valid cipher. */
- if (idata)
- silc_packet_receive_process(sock, server->server_type == SILC_ROUTER ?
- TRUE : FALSE, idata->receive_key,
- idata->hmac_receive, idata->psn_receive,
- silc_server_packet_parse, server);
- else
- silc_packet_receive_process(sock, server->server_type == SILC_ROUTER ?
- TRUE : FALSE, NULL, NULL, 0,
- silc_server_packet_parse, server);
- return FALSE;
- }
+ SilcServerConnection sconn;
- switch (sock->type) {
- case SILC_SOCKET_TYPE_UNKNOWN:
- case SILC_SOCKET_TYPE_CLIENT:
- /* Parse the packet with timeout */
- silc_schedule_task_add(server->schedule, sock->sock,
- silc_server_packet_parse_real,
- (void *)parser_context, 0, 100000,
- SILC_TASK_TIMEOUT,
- SILC_TASK_PRI_NORMAL);
- break;
- case SILC_SOCKET_TYPE_SERVER:
- case SILC_SOCKET_TYPE_ROUTER:
- /* Packets from servers are parsed immediately */
- silc_server_packet_parse_real(server->schedule, 0, sock->sock,
- parser_context);
- break;
- default:
- return TRUE;
- }
+ /* Allocate connection object for hold connection specific stuff. */
+ sconn = silc_calloc(1, sizeof(*sconn));
+ if (!sconn)
+ return;
+ sconn->remote_host = strdup(remote_host);
+ sconn->remote_port = port;
+ sconn->no_reconnect = reconnect == FALSE;
+ sconn->callback = callback;
+ sconn->callback_context = context;
+ sconn->no_conf = dynamic;
+ sconn->server = server;
- return TRUE;
+ SILC_LOG_DEBUG(("Created connection %p", sconn));
+
+ silc_schedule_task_add_timeout(server->schedule, silc_server_connect_router,
+ sconn, 0, 0);
}
-/* Parses the packet type and calls what ever routines the packet type
- requires. This is done for all incoming packets. */
+/* Connection authentication completion callback */
-void silc_server_packet_parse_type(SilcServer server,
- SilcSocketConnection sock,
- SilcPacketContext *packet)
+static void
+silc_server_ke_auth_compl(SilcConnAuth connauth, SilcBool success,
+ void *context)
{
- SilcPacketType type = packet->type;
- SilcIDListData idata = (SilcIDListData)sock->user_data;
+ SilcServerConnection sconn = context;
+ SilcUnknownEntry entry = silc_packet_get_context(sconn->sock);
+ SilcServer server = entry->server;
+ SilcServerConfigServer *conn;
+ SilcServerConfigConnParams *param;
+ SilcIDListData idata;
+ SilcServerEntry id_entry = NULL;
+ unsigned char id[32];
+ SilcUInt32 id_len;
+ SilcID remote_id;
+ const char *ip;
+
+ SILC_LOG_DEBUG(("Connection %p authentication completed, entry %p",
+ sconn, entry));
+
+ entry->op = NULL;
+
+ if (success == FALSE) {
+ /* Authentication failed */
+
+ /* Try reconnecting if configuration wants it */
+ if (!sconn->no_reconnect) {
+ silc_schedule_task_add_timeout(server->schedule,
+ silc_server_connect_to_router_retry,
+ sconn, 1, 0);
+ silc_dlist_del(server->conns, sconn);
+ return;
+ }
- SILC_LOG_DEBUG(("Parsing packet type %d", type));
+ if (sconn->callback)
+ (*sconn->callback)(server, NULL, sconn->callback_context);
+ silc_server_free_sock_user_data(server, sconn->sock, NULL);
+ silc_server_disconnect_remote(server, sconn->sock,
+ SILC_STATUS_ERR_AUTH_FAILED, NULL);
+ return;
+ }
- /* Parse the packet type */
- switch (type) {
- case SILC_PACKET_DISCONNECT:
- SILC_LOG_DEBUG(("Disconnect packet"));
- if (packet->flags & SILC_PACKET_FLAG_LIST)
- break;
- break;
+ /* XXX For now remote is router always */
+ entry->data.conn_type = SILC_CONN_ROUTER;
- case SILC_PACKET_SUCCESS:
- /*
- * Success received for something. For now we can have only
- * one protocol for connection executing at once hence this
- * success message is for whatever protocol is executing currently.
- */
- SILC_LOG_DEBUG(("Success packet"));
- if (packet->flags & SILC_PACKET_FLAG_LIST)
- break;
- if (sock->protocol)
- silc_protocol_execute(sock->protocol, server->schedule, 0, 0);
+ SILC_LOG_INFO(("Connected to %s %s",
+ SILC_CONNTYPE_STRING(entry->data.conn_type),
+ sconn->remote_host));
+
+ /* Create the actual entry for remote entity */
+ switch (entry->data.conn_type) {
+ case SILC_CONN_SERVER:
+ SILC_LOG_DEBUG(("Remote is SILC server"));
+
+ /* Add new server. The server must register itself to us before it
+ becomes registered to SILC network. */
+ id_entry = silc_idlist_add_server(server->local_list,
+ strdup(sconn->remote_host),
+ SILC_SERVER, NULL, NULL, sconn->sock);
+ if (!id_entry) {
+ if (sconn->callback)
+ (*sconn->callback)(server, NULL, sconn->callback_context);
+ silc_server_free_sock_user_data(server, sconn->sock, NULL);
+ silc_server_disconnect_remote(server, sconn->sock,
+ SILC_STATUS_ERR_RESOURCE_LIMIT, NULL);
+ return;
+ }
+
+ /* Statistics */
+ server->stat.my_servers++;
+ if (server->server_type == SILC_ROUTER)
+ server->stat.servers++;
+ SILC_LOG_DEBUG(("my_servers %d", server->stat.my_servers));
+
+ silc_idlist_add_data(id_entry, (SilcIDListData)entry);
break;
- case SILC_PACKET_FAILURE:
- /*
- * Failure received for something. For now we can have only
- * one protocol for connection executing at once hence this
- * failure message is for whatever protocol is executing currently.
- */
- SILC_LOG_DEBUG(("Failure packet"));
- if (packet->flags & SILC_PACKET_FLAG_LIST)
- break;
- if (sock->protocol) {
- SilcServerFailureContext f;
- f = silc_calloc(1, sizeof(*f));
- f->server = server;
- f->sock = sock;
-
- /* We will wait 5 seconds to process this failure packet */
- silc_schedule_task_add(server->schedule, sock->sock,
- silc_server_failure_callback, (void *)f, 5, 0,
- SILC_TASK_TIMEOUT, SILC_TASK_PRI_NORMAL);
+ case SILC_CONN_ROUTER:
+ SILC_LOG_DEBUG(("Remote is SILC router"));
+
+ /* Register to network */
+ silc_id_id2str(server->id, SILC_ID_SERVER, id, sizeof(id), &id_len);
+ if (!silc_packet_send_va(sconn->sock, SILC_PACKET_NEW_SERVER, 0,
+ SILC_STR_UI_SHORT(id_len),
+ SILC_STR_DATA(id, id_len),
+ SILC_STR_UI_SHORT(strlen(server->server_name)),
+ SILC_STR_DATA(server->server_name,
+ strlen(server->server_name)),
+ SILC_STR_END)) {
+ if (sconn->callback)
+ (*sconn->callback)(server, NULL, sconn->callback_context);
+ silc_server_free_sock_user_data(server, sconn->sock, NULL);
+ silc_server_disconnect_remote(server, sconn->sock,
+ SILC_STATUS_ERR_RESOURCE_LIMIT, NULL);
+ return;
+ }
+
+ /* Get remote ID */
+ silc_packet_get_ids(sconn->sock, NULL, NULL, NULL, &remote_id);
+
+ /* Check that we do not have this ID already */
+ id_entry = silc_idlist_find_server_by_id(server->local_list,
+ &remote_id.u.server_id,
+ TRUE, NULL);
+ if (id_entry) {
+ silc_idcache_del_by_context(server->local_list->servers, id_entry, NULL);
+ } else {
+ id_entry = silc_idlist_find_server_by_id(server->global_list,
+ &remote_id.u.server_id,
+ TRUE, NULL);
+ if (id_entry)
+ silc_idcache_del_by_context(server->global_list->servers, id_entry,
+ NULL);
+ }
+
+ SILC_LOG_DEBUG(("New server id(%s)",
+ silc_id_render(&remote_id.u.server_id, SILC_ID_SERVER)));
+
+ /* Add the connected router to global server list. Router is sent
+ as NULL since it's local to us. */
+ id_entry = silc_idlist_add_server(server->global_list,
+ strdup(sconn->remote_host),
+ SILC_ROUTER,
+ silc_id_dup(&remote_id.u.server_id,
+ SILC_ID_SERVER),
+ NULL, sconn->sock);
+ if (!id_entry) {
+ /* Try reconnecting if configuration wants it */
+ if (!sconn->no_reconnect) {
+ silc_schedule_task_add_timeout(server->schedule,
+ silc_server_connect_to_router_retry,
+ sconn, 1, 0);
+ silc_dlist_del(server->conns, sconn);
+ return;
+ }
+
+ if (sconn->callback)
+ (*sconn->callback)(server, NULL, sconn->callback_context);
+ silc_server_free_sock_user_data(server, sconn->sock, NULL);
+ silc_server_disconnect_remote(server, sconn->sock,
+ SILC_STATUS_ERR_RESOURCE_LIMIT, NULL);
+ return;
+ }
+
+ /* Registered */
+ silc_idlist_add_data(id_entry, (SilcIDListData)entry);
+ idata = (SilcIDListData)id_entry;
+ idata->status |= (SILC_IDLIST_STATUS_REGISTERED |
+ SILC_IDLIST_STATUS_LOCAL);
+ idata->sconn = sconn;
+
+ /* Statistics */
+ server->stat.my_routers++;
+ if (server->server_type == SILC_ROUTER)
+ server->stat.routers++;
+ SILC_LOG_DEBUG(("my_routers %d", server->stat.my_routers));
+
+ if (!sconn->backup) {
+ /* Mark this router our primary router if we're still standalone */
+ if (server->standalone) {
+ SILC_LOG_DEBUG(("This connection is our primary router"));
+ server->id_entry->router = id_entry;
+ server->router = id_entry;
+ server->router->server_type = SILC_ROUTER;
+ server->standalone = FALSE;
+ server->backup_primary = FALSE;
+
+ /* Announce data if we are not backup router (unless not as primary
+ currently). Backup router announces later at the end of
+ resuming protocol. */
+ if (server->backup_router && server->server_type == SILC_ROUTER) {
+ SILC_LOG_DEBUG(("Announce data after resume protocol"));
+ } else {
+ /* If we are router then announce our possible servers. Backup
+ router announces also global servers. */
+ if (server->server_type == SILC_ROUTER)
+ silc_server_announce_servers(server,
+ server->backup_router ? TRUE : FALSE,
+ 0, SILC_PRIMARY_ROUTE(server));
+
+ /* Announce our clients and channels to the router */
+ silc_server_announce_clients(server, 0, SILC_PRIMARY_ROUTE(server));
+ silc_server_announce_channels(server, 0, SILC_PRIMARY_ROUTE(server));
+ }
+
+ /* If we are backup router then this primary router is whom we are
+ backing up. */
+ if (server->server_type == SILC_BACKUP_ROUTER) {
+ silc_socket_stream_get_info(silc_packet_stream_get_stream(sconn->
+ sock),
+ NULL, NULL, &ip, NULL);
+ silc_server_backup_add(server, server->id_entry, ip,
+ sconn->remote_port, TRUE);
+ }
+ }
+#if 0
+ else {
+ /* We already have primary router. Disconnect this connection */
+ SILC_LOG_DEBUG(("We already have primary router, disconnect"));
+ silc_idlist_del_server(server->global_list, id_entry);
+ if (sconn->callback)
+ (*sconn->callback)(server, NULL, sconn->callback_context);
+ silc_server_free_sock_user_data(server, sconn->sock, NULL);
+ silc_server_disconnect_remote(server, sconn->sock,
+ SILC_STATUS_ERR_RESOURCE_LIMIT, NULL);
+ return;
+ }
+#endif /* 0 */
+ } else {
+ /* Add this server to be our backup router */
+ id_entry->server_type = SILC_BACKUP_ROUTER;
+ silc_server_backup_add(server, id_entry, sconn->backup_replace_ip,
+ sconn->backup_replace_port, FALSE);
}
+
break;
- case SILC_PACKET_REJECT:
- SILC_LOG_DEBUG(("Reject packet"));
- if (packet->flags & SILC_PACKET_FLAG_LIST)
- break;
+ default:
+ if (sconn->callback)
+ (*sconn->callback)(server, NULL, sconn->callback_context);
+ silc_server_free_sock_user_data(server, sconn->sock, NULL);
+ silc_server_disconnect_remote(server, sconn->sock,
+ SILC_STATUS_ERR_AUTH_FAILED, NULL);
return;
- break;
+ }
- case SILC_PACKET_NOTIFY:
- /*
- * Received notify packet. Server can receive notify packets from
- * router. Server then relays the notify messages to clients if needed.
- */
- SILC_LOG_DEBUG(("Notify packet"));
- if (packet->flags & SILC_PACKET_FLAG_LIST)
- silc_server_notify_list(server, sock, packet);
- else
- silc_server_notify(server, sock, packet);
- break;
+ SILC_LOG_DEBUG(("Connection established, sock %p", sconn->sock));
- /*
- * Channel packets
- */
- case SILC_PACKET_CHANNEL_MESSAGE:
- /*
- * Received channel message. Channel messages are special packets
- * (although probably most common ones) thus they are handled
- * specially.
- */
- SILC_LOG_DEBUG(("Channel Message packet"));
- if (packet->flags & SILC_PACKET_FLAG_LIST)
- break;
- idata->last_receive = time(NULL);
- silc_server_channel_message(server, sock, packet);
- break;
+ conn = sconn->conn.ref_ptr;
+ param = &server->config->param;
+ if (conn && conn->param)
+ param = conn->param;
- case SILC_PACKET_CHANNEL_KEY:
- /*
- * Received key for channel. As channels are created by the router
- * the keys are as well. We will distribute the key to all of our
- * locally connected clients on the particular channel. Router
- * never receives this channel and thus is ignored.
- */
- SILC_LOG_DEBUG(("Channel Key packet"));
- if (packet->flags & SILC_PACKET_FLAG_LIST)
- break;
- silc_server_channel_key(server, sock, packet);
- break;
+ /* Register rekey timeout */
+ sconn->rekey_timeout = param->key_exchange_rekey;
+ silc_schedule_task_add_timeout(server->schedule, silc_server_do_rekey,
+ sconn->sock, sconn->rekey_timeout, 0);
- /*
- * Command packets
- */
- case SILC_PACKET_COMMAND:
- /*
- * Recived command. Processes the command request and allocates the
- * command context and calls the command.
- */
- SILC_LOG_DEBUG(("Command packet"));
- if (packet->flags & SILC_PACKET_FLAG_LIST)
- break;
- silc_server_command_process(server, sock, packet);
- break;
+ /* Set the entry as packet stream context */
+ silc_packet_set_context(sconn->sock, id_entry);
- case SILC_PACKET_COMMAND_REPLY:
- /*
- * Received command reply packet. Received command reply to command. It
- * may be reply to command sent by us or reply to command sent by client
- * that we've routed further.
- */
- SILC_LOG_DEBUG(("Command Reply packet"));
- if (packet->flags & SILC_PACKET_FLAG_LIST)
- break;
- silc_server_command_reply(server, sock, packet);
- break;
+ /* Call the completion callback to indicate that we've connected to
+ the router */
+ if (sconn && sconn->callback)
+ (*sconn->callback)(server, id_entry, sconn->callback_context);
- /*
- * Private Message packets
- */
- case SILC_PACKET_PRIVATE_MESSAGE:
- /*
- * Received private message packet. The packet is coming from either
- * client or server.
- */
- SILC_LOG_DEBUG(("Private Message packet"));
- if (packet->flags & SILC_PACKET_FLAG_LIST)
- break;
- idata->last_receive = time(NULL);
- silc_server_private_message(server, sock, packet);
- break;
+ if (sconn == server->router_conn)
+ server->router_conn = NULL;
- case SILC_PACKET_PRIVATE_MESSAGE_KEY:
- /*
- * Private message key packet.
- */
- if (packet->flags & SILC_PACKET_FLAG_LIST)
- break;
- silc_server_private_message_key(server, sock, packet);
- break;
+ silc_free(entry);
+}
- /*
- * Key Exchange protocol packets
- */
- case SILC_PACKET_KEY_EXCHANGE:
- SILC_LOG_DEBUG(("KE packet"));
- if (packet->flags & SILC_PACKET_FLAG_LIST)
- break;
+/* SKE completion callback */
- if (sock->protocol && sock->protocol->protocol &&
- sock->protocol->protocol->type == SILC_PROTOCOL_SERVER_KEY_EXCHANGE) {
+static void silc_server_ke_completed(SilcSKE ske, SilcSKEStatus status,
+ SilcSKESecurityProperties prop,
+ SilcSKEKeyMaterial keymat,
+ SilcSKERekeyMaterial rekey,
+ void *context)
+{
+ SilcPacketStream sock = context;
+ SilcUnknownEntry entry = silc_packet_get_context(sock);
+ SilcServerConnection sconn = entry->data.sconn;
+ SilcServer server = entry->server;
+ SilcServerConfigRouter *conn = sconn->conn.ref_ptr;
+ SilcAuthMethod auth_meth = SILC_AUTH_NONE;
+ void *auth_data = NULL;
+ SilcUInt32 auth_data_len = 0;
+ SilcConnAuth connauth;
+ SilcCipher send_key, receive_key;
+ SilcHmac hmac_send, hmac_receive;
+ SilcHash hash;
+
+ SILC_LOG_DEBUG(("Connection %p, SKE completed, entry %p", sconn, entry));
+
+ entry->op = NULL;
+
+ if (status != SILC_SKE_STATUS_OK) {
+ /* SKE failed */
+ SILC_LOG_ERROR(("Error (%s) during Key Exchange protocol with %s (%s)",
+ silc_ske_map_status(status), entry->hostname, entry->ip));
+ silc_ske_free(ske);
+
+ /* Try reconnecting if configuration wants it */
+ if (!sconn->no_reconnect) {
+ silc_schedule_task_add_timeout(server->schedule,
+ silc_server_connect_to_router_retry,
+ sconn, 1, 0);
+ silc_dlist_del(server->conns, sconn);
+ return;
+ }
- SilcServerKEInternalContext *proto_ctx =
- (SilcServerKEInternalContext *)sock->protocol->context;
+ if (sconn->callback)
+ (*sconn->callback)(server, NULL, sconn->callback_context);
+ silc_server_free_sock_user_data(server, sconn->sock, NULL);
+ silc_server_disconnect_remote(server, sconn->sock,
+ SILC_STATUS_ERR_KEY_EXCHANGE_FAILED, NULL);
+ return;
+ }
- proto_ctx->packet = silc_packet_context_dup(packet);
+ SILC_LOG_DEBUG(("Setting keys into use"));
- /* Let the protocol handle the packet */
- silc_protocol_execute(sock->protocol, server->schedule, 0, 100000);
- } else {
- SILC_LOG_ERROR(("Received Key Exchange packet but no key exchange "
- "protocol active, packet dropped."));
+ /* Set the keys into use. The data will be encrypted after this. */
+ if (!silc_ske_set_keys(ske, keymat, prop, &send_key, &receive_key,
+ &hmac_send, &hmac_receive, &hash)) {
+ silc_ske_free(ske);
+
+ /* Try reconnecting if configuration wants it */
+ if (!sconn->no_reconnect) {
+ silc_schedule_task_add_timeout(server->schedule,
+ silc_server_connect_to_router_retry,
+ sconn, 1, 0);
+ silc_dlist_del(server->conns, sconn);
+ return;
}
- break;
- case SILC_PACKET_KEY_EXCHANGE_1:
- SILC_LOG_DEBUG(("KE 1 packet"));
- if (packet->flags & SILC_PACKET_FLAG_LIST)
- break;
+ /* Error setting keys */
+ if (sconn->callback)
+ (*sconn->callback)(server, NULL, sconn->callback_context);
+ silc_server_free_sock_user_data(server, sconn->sock, NULL);
+ silc_server_disconnect_remote(server, sconn->sock,
+ SILC_STATUS_ERR_KEY_EXCHANGE_FAILED, NULL);
+ return;
+ }
+ silc_packet_set_keys(sconn->sock, send_key, receive_key, hmac_send,
+ hmac_receive, FALSE);
+
+ SILC_LOG_DEBUG(("Starting connection authentication"));
+
+ connauth = silc_connauth_alloc(server->schedule, ske,
+ server->config->conn_auth_timeout);
+ if (!connauth) {
+ silc_ske_free(ske);
+
+ /* Try reconnecting if configuration wants it */
+ if (!sconn->no_reconnect) {
+ silc_schedule_task_add_timeout(server->schedule,
+ silc_server_connect_to_router_retry,
+ sconn, 1, 0);
+ silc_dlist_del(server->conns, sconn);
+ return;
+ }
- if (sock->protocol && sock->protocol->protocol &&
- (sock->protocol->protocol->type == SILC_PROTOCOL_SERVER_KEY_EXCHANGE ||
- sock->protocol->protocol->type == SILC_PROTOCOL_SERVER_REKEY)) {
-
- if (sock->protocol->protocol->type == SILC_PROTOCOL_SERVER_REKEY) {
- SilcServerRekeyInternalContext *proto_ctx =
- (SilcServerRekeyInternalContext *)sock->protocol->context;
-
- if (proto_ctx->packet)
- silc_packet_context_free(proto_ctx->packet);
-
- proto_ctx->packet = silc_packet_context_dup(packet);
-
- /* Let the protocol handle the packet */
- silc_protocol_execute(sock->protocol, server->schedule, 0, 0);
- } else {
- SilcServerKEInternalContext *proto_ctx =
- (SilcServerKEInternalContext *)sock->protocol->context;
-
- if (proto_ctx->packet)
- silc_packet_context_free(proto_ctx->packet);
-
- proto_ctx->packet = silc_packet_context_dup(packet);
- proto_ctx->dest_id_type = packet->src_id_type;
- proto_ctx->dest_id = silc_id_str2id(packet->src_id, packet->src_id_len,
- packet->src_id_type);
- if (!proto_ctx->dest_id)
- break;
+ /** Error allocating auth protocol */
+ if (sconn->callback)
+ (*sconn->callback)(server, NULL, sconn->callback_context);
+ silc_server_free_sock_user_data(server, sconn->sock, NULL);
+ silc_server_disconnect_remote(server, sconn->sock,
+ SILC_STATUS_ERR_RESOURCE_LIMIT, NULL);
+ return;
+ }
- /* Let the protocol handle the packet */
- silc_protocol_execute(sock->protocol, server->schedule,
- 0, 100000);
+ /* Get authentication method */
+ if (conn) {
+ if (conn->passphrase) {
+ if (conn->publickeys && !server->config->prefer_passphrase_auth) {
+ auth_meth = SILC_AUTH_PUBLIC_KEY;
+ auth_data = server->private_key;
+ } else {
+ auth_meth = SILC_AUTH_PASSWORD;
+ auth_data = conn->passphrase;
+ auth_data_len = conn->passphrase_len;
}
} else {
- SILC_LOG_ERROR(("Received Key Exchange 1 packet but no key exchange "
- "protocol active, packet dropped."));
+ auth_meth = SILC_AUTH_PUBLIC_KEY;
+ auth_data = server->private_key;
}
- break;
+ }
- case SILC_PACKET_KEY_EXCHANGE_2:
- SILC_LOG_DEBUG(("KE 2 packet"));
- if (packet->flags & SILC_PACKET_FLAG_LIST)
- break;
+ entry->data.rekey = rekey;
- if (sock->protocol && sock->protocol->protocol &&
- (sock->protocol->protocol->type == SILC_PROTOCOL_SERVER_KEY_EXCHANGE ||
- sock->protocol->protocol->type == SILC_PROTOCOL_SERVER_REKEY)) {
-
- if (sock->protocol->protocol->type == SILC_PROTOCOL_SERVER_REKEY) {
- SilcServerRekeyInternalContext *proto_ctx =
- (SilcServerRekeyInternalContext *)sock->protocol->context;
-
- if (proto_ctx->packet)
- silc_packet_context_free(proto_ctx->packet);
-
- proto_ctx->packet = silc_packet_context_dup(packet);
-
- /* Let the protocol handle the packet */
- silc_protocol_execute(sock->protocol, server->schedule, 0, 0);
- } else {
- SilcServerKEInternalContext *proto_ctx =
- (SilcServerKEInternalContext *)sock->protocol->context;
-
- if (proto_ctx->packet)
- silc_packet_context_free(proto_ctx->packet);
-
- proto_ctx->packet = silc_packet_context_dup(packet);
- proto_ctx->dest_id_type = packet->src_id_type;
- proto_ctx->dest_id = silc_id_str2id(packet->src_id, packet->src_id_len,
- packet->src_id_type);
- if (!proto_ctx->dest_id)
- break;
+ /* Start connection authentication */
+ entry->op =
+ silc_connauth_initiator(connauth, server->server_type == SILC_SERVER ?
+ SILC_CONN_SERVER : SILC_CONN_ROUTER, auth_meth,
+ auth_data, auth_data_len,
+ silc_server_ke_auth_compl, sconn);
+}
- /* Let the protocol handle the packet */
- silc_protocol_execute(sock->protocol, server->schedule,
- 0, 100000);
- }
- } else {
- SILC_LOG_ERROR(("Received Key Exchange 2 packet but no key exchange "
- "protocol active, packet dropped."));
+/* Function that is called when the network connection to a router has
+ been established. This will continue with the key exchange protocol
+ with the remote router. */
+
+void silc_server_start_key_exchange(SilcServerConnection sconn)
+{
+ SilcServer server = sconn->server;
+ SilcServerConfigRouter *conn = sconn->conn.ref_ptr;
+ SilcUnknownEntry entry;
+ SilcSKEParamsStruct params;
+ SilcSKE ske;
+
+ /* Cancel any possible retry timeouts */
+ silc_schedule_task_del_by_context(server->schedule, sconn);
+
+ /* Create packet stream */
+ sconn->sock = silc_packet_stream_create(server->packet_engine,
+ server->schedule, sconn->stream);
+ if (!sconn->sock) {
+ SILC_LOG_ERROR(("Cannot connect: cannot create packet stream"));
+ silc_stream_destroy(sconn->stream);
+
+ /* Try reconnecting if configuration wants it */
+ if (!sconn->no_reconnect) {
+ silc_schedule_task_add_timeout(server->schedule,
+ silc_server_connect_to_router_retry,
+ sconn, 1, 0);
+ silc_dlist_del(server->conns, sconn);
+ return;
+ }
+
+ if (sconn->callback)
+ (*sconn->callback)(server, NULL, sconn->callback_context);
+ silc_server_connection_free(sconn);
+ return;
+ }
+ server->stat.conn_num++;
+
+ /* Set source ID to packet stream */
+ if (!silc_packet_set_ids(sconn->sock, SILC_ID_SERVER, server->id,
+ 0, NULL)) {
+ silc_packet_stream_destroy(sconn->sock);
+
+ /* Try reconnecting if configuration wants it */
+ if (!sconn->no_reconnect) {
+ silc_schedule_task_add_timeout(server->schedule,
+ silc_server_connect_to_router_retry,
+ sconn, 1, 0);
+ silc_dlist_del(server->conns, sconn);
+ return;
+ }
+
+ if (sconn->callback)
+ (*sconn->callback)(server, NULL, sconn->callback_context);
+ silc_server_connection_free(sconn);
+ return;
+ }
+
+ /* Create entry for remote entity */
+ entry = silc_calloc(1, sizeof(*entry));
+ if (!entry) {
+ silc_packet_stream_destroy(sconn->sock);
+
+ /* Try reconnecting if configuration wants it */
+ if (!sconn->no_reconnect) {
+ silc_schedule_task_add_timeout(server->schedule,
+ silc_server_connect_to_router_retry,
+ sconn, 1, 0);
+ silc_dlist_del(server->conns, sconn);
+ return;
+ }
+
+ if (sconn->callback)
+ (*sconn->callback)(server, NULL, sconn->callback_context);
+ silc_server_connection_free(sconn);
+ return;
+ }
+ entry->server = server;
+ entry->data.sconn = sconn;
+ silc_packet_set_context(sconn->sock, entry);
+
+ SILC_LOG_DEBUG(("Created unknown connection %p", entry));
+
+ /* Set Key Exchange flags from configuration, but fall back to global
+ settings too. */
+ memset(¶ms, 0, sizeof(params));
+ SILC_GET_SKE_FLAGS(conn, params.flags);
+ if (server->config->param.key_exchange_pfs)
+ params.flags |= SILC_SKE_SP_FLAG_PFS;
+
+ /* Start SILC Key Exchange protocol */
+ SILC_LOG_DEBUG(("Starting key exchange protocol, connection %p", sconn));
+ ske = silc_ske_alloc(server->rng, server->schedule, server->repository,
+ server->public_key, server->private_key, sconn);
+ if (!ske) {
+ silc_free(entry);
+ silc_packet_stream_destroy(sconn->sock);
+
+ /* Try reconnecting if configuration wants it */
+ if (!sconn->no_reconnect) {
+ silc_schedule_task_add_timeout(server->schedule,
+ silc_server_connect_to_router_retry,
+ sconn, 1, 0);
+ silc_dlist_del(server->conns, sconn);
+ return;
}
+
+ if (sconn->callback)
+ (*sconn->callback)(server, NULL, sconn->callback_context);
+ silc_server_connection_free(sconn);
+ return;
+ }
+ silc_ske_set_callbacks(ske, silc_server_verify_key,
+ silc_server_ke_completed, sconn->sock);
+
+ /* Start key exchange protocol */
+ params.version = silc_version_string;
+ params.timeout_secs = server->config->key_exchange_timeout;
+ entry->op = silc_ske_initiator(ske, sconn->sock, ¶ms, NULL);
+}
+
+/* Timeout callback that will be called to retry connecting to remote
+ router. This is used by both normal and router server. This will wait
+ before retrying the connecting. The timeout is generated by exponential
+ backoff algorithm. */
+
+SILC_TASK_CALLBACK(silc_server_connect_to_router_retry)
+{
+ SilcServerConnection sconn = context;
+ SilcServer server = sconn->server;
+ SilcServerConfigRouter *conn = sconn->conn.ref_ptr;
+ SilcServerConfigConnParams *param =
+ (conn->param ? conn->param : &server->config->param);
+
+ SILC_LOG_INFO(("Retrying connecting to %s:%d", sconn->remote_host,
+ sconn->remote_port));
+
+ /* Calculate next timeout */
+ if (sconn->retry_count >= 1) {
+ sconn->retry_timeout = sconn->retry_timeout * SILC_SERVER_RETRY_MULTIPLIER;
+ if (sconn->retry_timeout > param->reconnect_interval_max)
+ sconn->retry_timeout = param->reconnect_interval_max;
+ } else {
+ sconn->retry_timeout = param->reconnect_interval;
+ }
+ sconn->retry_count++;
+ sconn->retry_timeout = sconn->retry_timeout +
+ (silc_rng_get_rn32(server->rng) % SILC_SERVER_RETRY_RANDOMIZER);
+
+ /* If we've reached max retry count, give up. */
+ if ((sconn->retry_count > param->reconnect_count) &&
+ sconn->no_reconnect) {
+ SILC_LOG_ERROR(("Could not connect, giving up"));
+
+ if (sconn->callback)
+ (*sconn->callback)(server, NULL, sconn->callback_context);
+ silc_server_connection_free(sconn);
+ return;
+ }
+
+ SILC_LOG_DEBUG(("Retrying connecting %d seconds", sconn->retry_timeout));
+
+ /* We will lookup a fresh pointer later */
+ silc_server_config_unref(&sconn->conn);
+
+ /* Wait before retrying */
+ silc_schedule_task_del_by_context(server->schedule, sconn);
+ silc_schedule_task_add_timeout(server->schedule, silc_server_connect_router,
+ sconn, sconn->retry_timeout, 0);
+}
+
+/* Callback for async connection to remote router */
+
+static void silc_server_connection_established(SilcNetStatus status,
+ SilcStream stream,
+ void *context)
+{
+ SilcServerConnection sconn = context;
+ SilcServer server = sconn->server;
+
+ silc_schedule_task_del_by_context(server->schedule, sconn);
+ sconn->op = NULL;
+
+ switch (status) {
+ case SILC_NET_OK:
+ SILC_LOG_DEBUG(("Connection %p to %s:%d established", sconn,
+ sconn->remote_host, sconn->remote_port));
+
+ /* Continue with key exchange protocol */
+ sconn->stream = stream;
+ silc_server_start_key_exchange(sconn);
break;
- case SILC_PACKET_CONNECTION_AUTH_REQUEST:
- /*
- * Connection authentication request packet. When we receive this packet
- * we will send to the other end information about our mandatory
- * authentication method for the connection. This packet maybe received
- * at any time.
- */
- SILC_LOG_DEBUG(("Connection authentication request packet"));
- if (packet->flags & SILC_PACKET_FLAG_LIST)
- break;
- silc_server_connection_auth_request(server, sock, packet);
+ case SILC_NET_UNKNOWN_IP:
+ case SILC_NET_UNKNOWN_HOST:
+ SILC_LOG_ERROR(("Could not connect to %s:%d: %s",
+ sconn->remote_host, sconn->remote_port,
+ silc_net_get_error_string(status)));
+ if (!sconn->no_reconnect) {
+ silc_schedule_task_add_timeout(sconn->server->schedule,
+ silc_server_connect_to_router_retry,
+ sconn, 1, 0);
+ silc_dlist_del(server->conns, sconn);
+ } else {
+ if (sconn->callback)
+ (*sconn->callback)(server, NULL, sconn->callback_context);
+ silc_server_connection_free(sconn);
+ }
break;
- /*
- * Connection Authentication protocol packets
- */
- case SILC_PACKET_CONNECTION_AUTH:
- /* Start of the authentication protocol. We receive here the
- authentication data and will verify it. */
- SILC_LOG_DEBUG(("Connection auth packet"));
- if (packet->flags & SILC_PACKET_FLAG_LIST)
+ default:
+ SILC_LOG_ERROR(("Could not connect to %s:%d: %s",
+ sconn->remote_host, sconn->remote_port,
+ silc_net_get_error_string(status)));
+ if (!sconn->no_reconnect) {
+ silc_schedule_task_add_timeout(sconn->server->schedule,
+ silc_server_connect_to_router_retry,
+ sconn, 1, 0);
+ silc_dlist_del(server->conns, sconn);
+ } else {
+ if (sconn->callback)
+ (*sconn->callback)(server, NULL, sconn->callback_context);
+ silc_server_connection_free(sconn);
+ }
+ break;
+ }
+}
+
+/* Generic routine to use connect to a router. */
+
+SILC_TASK_CALLBACK(silc_server_connect_router)
+{
+ SilcServerConnection sconn = context;
+ SilcServer server = sconn->server;
+ SilcServerConfigRouter *rconn;
+
+ silc_schedule_task_del_by_context(server->schedule, sconn);
+
+ /* Don't connect if we are shutting down. */
+ if (server->server_shutdown) {
+ if (sconn->callback)
+ (*sconn->callback)(server, NULL, sconn->callback_context);
+ silc_server_connection_free(sconn);
+ return;
+ }
+
+ SILC_LOG_INFO(("Connecting to the %s %s on port %d",
+ (sconn->backup ? "backup router" : "router"),
+ sconn->remote_host, sconn->remote_port));
+
+ if (!sconn->no_conf) {
+ /* Find connection configuration */
+ rconn = silc_server_config_find_router_conn(server, sconn->remote_host,
+ sconn->remote_port);
+ if (!rconn) {
+ SILC_LOG_INFO(("Unconfigured %s connection %s:%d, cannot connect",
+ (sconn->backup ? "backup router" : "router"),
+ sconn->remote_host, sconn->remote_port));
+ if (sconn->callback)
+ (*sconn->callback)(server, NULL, sconn->callback_context);
+ silc_server_connection_free(sconn);
+ return;
+ }
+ silc_server_config_ref(&sconn->conn, server->config, (void *)rconn);
+ }
+
+ /* Connect to remote host */
+ sconn->op =
+ silc_net_tcp_connect((!server->config->server_info->primary ? NULL :
+ server->config->server_info->primary->server_ip),
+ sconn->remote_host, sconn->remote_port,
+ server->schedule, silc_server_connection_established,
+ sconn);
+ if (!sconn->op) {
+ SILC_LOG_ERROR(("Could not connect to router %s:%d",
+ sconn->remote_host, sconn->remote_port));
+ if (sconn->callback)
+ (*sconn->callback)(server, NULL, sconn->callback_context);
+ silc_server_connection_free(sconn);
+ return;
+ }
+
+ /* Add to connection list */
+ silc_dlist_add(server->conns, sconn);
+}
+
+/* This function connects to our primary router or if we are a router this
+ establishes all our primary routes. This is called at the start of the
+ server to do authentication and key exchange with our router - called
+ from schedule. */
+
+SILC_TASK_CALLBACK(silc_server_connect_to_router)
+{
+ SilcServer server = context;
+ SilcServerConnection sconn;
+ SilcServerConfigRouter *ptr;
+ SilcServerConfigConnParams *param;
+
+ /* Don't connect if we are shutting down. */
+ if (server->server_shutdown)
+ return;
+
+ SILC_LOG_DEBUG(("We are %s",
+ (server->server_type == SILC_SERVER ?
+ "normal server" : server->server_type == SILC_ROUTER ?
+ "router" : "backup router/normal server")));
+
+ if (!server->config->routers) {
+ /* There wasn't a configured router, we will continue but we don't
+ have a connection to outside world. We will be standalone server. */
+ SILC_LOG_DEBUG(("No router(s), we are standalone"));
+ server->standalone = TRUE;
+ return;
+ }
+
+ /* Cancel any possible retry timeouts */
+ silc_schedule_task_del_by_callback(server->schedule,
+ silc_server_connect_router);
+ silc_schedule_task_del_by_callback(server->schedule,
+ silc_server_connect_to_router_retry);
+
+ /* Create the connections to all our routes */
+ for (ptr = server->config->routers; ptr; ptr = ptr->next) {
+
+ SILC_LOG_DEBUG(("%s connection [%s] %s:%d",
+ ptr->backup_router ? "Backup router" : "Router",
+ ptr->initiator ? "Initiator" : "Responder",
+ ptr->host, ptr->port));
+
+ if (server->server_type == SILC_ROUTER && ptr->backup_router &&
+ ptr->initiator == FALSE && !server->backup_router &&
+ !silc_server_config_get_backup_router(server))
+ server->wait_backup = TRUE;
+
+ if (!ptr->initiator)
+ continue;
+ if (ptr->dynamic_connection)
+ continue;
+
+ /* Check whether we are connecting or connected to this host already */
+ if (silc_server_num_sockets_by_remote(server,
+ silc_net_is_ip(ptr->host) ?
+ ptr->host : NULL,
+ silc_net_is_ip(ptr->host) ?
+ NULL : ptr->host, ptr->port,
+ SILC_CONN_ROUTER)) {
+ SILC_LOG_DEBUG(("We are already connected to %s:%d",
+ ptr->host, ptr->port));
+
+ /* If we don't have primary router and this connection is our
+ primary router we are in desync. Reconnect to the primary. */
+ if (server->standalone && !server->router) {
+ /* XXX */
+ SilcPacketStream sock;
+ SilcServerConfigRouter *primary =
+ silc_server_config_get_primary_router(server);
+ if (primary != ptr)
+ continue;
+ sock = silc_server_find_socket_by_host(server, SILC_CONN_ROUTER,
+ ptr->host, ptr->port);
+ if (!sock)
+ continue;
+ server->backup_noswitch = TRUE;
+ silc_server_free_sock_user_data(server, sock, NULL);
+ silc_server_disconnect_remote(server, sock, 0, NULL);
+ server->backup_noswitch = FALSE;
+ SILC_LOG_DEBUG(("Reconnecting to primary router"));
+ } else {
+ continue;
+ }
+ }
+
+ param = (ptr->param ? ptr->param : &server->config->param);
+
+ /* Allocate connection object for hold connection specific stuff. */
+ sconn = silc_calloc(1, sizeof(*sconn));
+ if (!sconn)
+ continue;
+ sconn->server = server;
+ sconn->remote_host = strdup(ptr->host);
+ sconn->remote_port = ptr->port;
+ sconn->backup = ptr->backup_router;
+ if (sconn->backup) {
+ sconn->backup_replace_ip = strdup(ptr->backup_replace_ip);
+ sconn->backup_replace_port = ptr->backup_replace_port;
+ }
+ sconn->no_reconnect = param->reconnect_keep_trying == FALSE;
+
+ SILC_LOG_DEBUG(("Created connection %p", sconn));
+
+ if (!server->router_conn && !sconn->backup)
+ server->router_conn = sconn;
+
+ /* Connect */
+ silc_server_connect_router(server->schedule, server, SILC_TASK_EXPIRE,
+ 0, sconn);
+ }
+}
+
+
+/************************ Accepting new connection **************************/
+
+/* After this is called, server don't wait for backup router anymore.
+ This gets called automatically even after we have backup router
+ connection established. */
+
+SILC_TASK_CALLBACK(silc_server_backup_router_wait)
+{
+ SilcServer server = context;
+ server->wait_backup = FALSE;
+}
+
+/* Authentication data callback */
+
+static SilcBool
+silc_server_accept_get_auth(SilcConnAuth connauth,
+ SilcConnectionType conn_type,
+ unsigned char **passphrase,
+ SilcUInt32 *passphrase_len,
+ SilcSKR *repository,
+ void *context)
+{
+ SilcPacketStream sock = context;
+ SilcUnknownEntry entry = silc_packet_get_context(sock);
+ SilcServer server = entry->server;
+
+ SILC_LOG_DEBUG(("Remote connection type %d", conn_type));
+
+ /* Remote end is client */
+ if (conn_type == SILC_CONN_CLIENT) {
+ SilcServerConfigClient *cconfig = entry->cconfig.ref_ptr;
+ if (!cconfig)
+ return FALSE;
+
+ *passphrase = cconfig->passphrase;
+ *passphrase_len = cconfig->passphrase_len;
+ if (cconfig->publickeys)
+ *repository = server->repository;
+
+ if (cconfig->publickeys) {
+ if (server->config->prefer_passphrase_auth) {
+ *repository = NULL;
+ } else {
+ *passphrase = NULL;
+ *passphrase_len = 0;
+ }
+ }
+
+ entry->conn_type = conn_type;
+ return TRUE;
+ }
+
+ /* Remote end is server */
+ if (conn_type == SILC_CONN_SERVER) {
+ SilcServerConfigServer *sconfig;
+
+ /* If we are normal server, don't accept the connection */
+ if (server->server_type == SILC_SERVER)
+ return FALSE;
+
+ sconfig = entry->sconfig.ref_ptr;
+ if (!sconfig)
+ return FALSE;
+
+ *passphrase = sconfig->passphrase;
+ *passphrase_len = sconfig->passphrase_len;
+ if (sconfig->publickeys)
+ *repository = server->repository;
+
+ if (sconfig->publickeys) {
+ if (server->config->prefer_passphrase_auth) {
+ *repository = NULL;
+ } else {
+ *passphrase = NULL;
+ *passphrase_len = 0;
+ }
+ }
+
+ entry->conn_type = conn_type;
+ return TRUE;
+ }
+
+ /* Remote end is router */
+ if (conn_type == SILC_CONN_ROUTER) {
+ SilcServerConfigRouter *rconfig = entry->rconfig.ref_ptr;
+ if (!rconfig)
+ return FALSE;
+
+ *passphrase = rconfig->passphrase;
+ *passphrase_len = rconfig->passphrase_len;
+ if (rconfig->publickeys)
+ *repository = server->repository;
+
+ if (rconfig->publickeys) {
+ if (server->config->prefer_passphrase_auth) {
+ *repository = NULL;
+ } else {
+ *passphrase = NULL;
+ *passphrase_len = 0;
+ }
+ }
+
+ entry->conn_type = conn_type;
+ return TRUE;
+ }
+
+ return FALSE;
+}
+
+/* Authentication completion callback. */
+
+static void
+silc_server_accept_auth_compl(SilcConnAuth connauth, SilcBool success,
+ void *context)
+{
+ SilcPacketStream sock = context;
+ SilcUnknownEntry entry = silc_packet_get_context(sock);
+ SilcIDListData idata = (SilcIDListData)entry;
+ SilcServer server = entry->server;
+ SilcServerConfigConnParams *param = &server->config->param;
+ SilcServerConnection sconn;
+ void *id_entry;
+ const char *hostname, *ip;
+ SilcUInt16 port;
+
+ entry->op = NULL;
+ silc_socket_stream_get_info(silc_packet_stream_get_stream(sock),
+ NULL, &hostname, &ip, &port);
+
+ if (success == FALSE) {
+ /* Authentication failed */
+ SILC_LOG_INFO(("Authentication failed for %s (%s) [%s]", entry->hostname,
+ entry->ip, SILC_CONNTYPE_STRING(entry->data.conn_type)));
+ server->stat.auth_failures++;
+ silc_server_disconnect_remote(server, sock,
+ SILC_STATUS_ERR_KEY_EXCHANGE_FAILED, NULL);
+ silc_server_config_unref(&entry->cconfig);
+ silc_server_config_unref(&entry->sconfig);
+ silc_server_config_unref(&entry->rconfig);
+ silc_server_free_sock_user_data(server, sock, NULL);
+ goto out;
+ }
+
+ SILC_LOG_DEBUG(("Checking whether connection is allowed"));
+
+ switch (entry->conn_type) {
+ case SILC_CONN_CLIENT:
+ {
+ SilcClientEntry client;
+ SilcServerConfigClient *conn = entry->cconfig.ref_ptr;
+
+ /* Verify whether this connection is after all allowed to connect */
+ if (!silc_server_connection_allowed(server, sock, entry->conn_type,
+ &server->config->param,
+ conn->param,
+ silc_connauth_get_ske(connauth))) {
+ server->stat.auth_failures++;
+ goto out;
+ }
+
+ /* If we are primary router and we have backup router configured
+ but it has not connected to use yet, do not accept any other
+ connection. */
+ if (server->wait_backup && server->server_type == SILC_ROUTER &&
+ !server->backup_router) {
+ SilcServerConfigRouter *router;
+ router = silc_server_config_get_backup_router(server);
+ if (router && strcmp(server->config->server_info->primary->server_ip,
+ entry->ip) &&
+ silc_server_find_socket_by_host(server,
+ SILC_CONN_SERVER,
+ router->backup_replace_ip, 0)) {
+ SILC_LOG_INFO(("Will not accept connections because we do "
+ "not have backup router connection established"));
+ silc_server_disconnect_remote(server, sock,
+ SILC_STATUS_ERR_PERM_DENIED,
+ "We do not have connection to backup "
+ "router established, try later");
+ silc_server_config_unref(&entry->cconfig);
+ silc_server_config_unref(&entry->sconfig);
+ silc_server_config_unref(&entry->rconfig);
+ silc_server_free_sock_user_data(server, sock, NULL);
+ server->stat.auth_failures++;
+
+ /* From here on, wait 20 seconds for the backup router to appear. */
+ silc_schedule_task_add_timeout(server->schedule,
+ silc_server_backup_router_wait,
+ (void *)server, 20, 0);
+ goto out;
+ }
+ }
+
+ SILC_LOG_DEBUG(("Remote host is client"));
+ SILC_LOG_INFO(("Connection %s (%s) is client", entry->hostname,
+ entry->ip));
+
+ /* Add the client to the client ID cache. The nickname and Client ID
+ and other information is created after we have received NEW_CLIENT
+ packet from client. */
+ client = silc_idlist_add_client(server->local_list,
+ NULL, NULL, NULL, NULL, NULL, sock);
+ if (!client) {
+ SILC_LOG_ERROR(("Could not add new client to cache"));
+ server->stat.auth_failures++;
+ silc_server_disconnect_remote(server, sock,
+ SILC_STATUS_ERR_AUTH_FAILED, NULL);
+ silc_server_config_unref(&entry->cconfig);
+ silc_server_config_unref(&entry->sconfig);
+ silc_server_config_unref(&entry->rconfig);
+ silc_server_free_sock_user_data(server, sock, NULL);
+ goto out;
+ }
+ entry->data.status |= SILC_IDLIST_STATUS_LOCAL;
+ entry->data.conn_type = SILC_CONN_CLIENT;
+
+ /* Statistics */
+ server->stat.my_clients++;
+ server->stat.clients++;
+ server->stat.cell_clients++;
+
+ /* Get connection parameters */
+ if (conn->param) {
+ param = conn->param;
+
+ if (!param->keepalive_secs)
+ param->keepalive_secs = server->config->param.keepalive_secs;
+
+ if (!param->qos && server->config->param.qos) {
+ param->qos = server->config->param.qos;
+ param->qos_rate_limit = server->config->param.qos_rate_limit;
+ param->qos_bytes_limit = server->config->param.qos_bytes_limit;
+ param->qos_limit_sec = server->config->param.qos_limit_sec;
+ param->qos_limit_usec = server->config->param.qos_limit_usec;
+ }
+
+ /* Check if to be anonymous connection */
+ if (param->anonymous)
+ client->mode |= SILC_UMODE_ANONYMOUS;
+ }
+
+ /* Add public key to repository */
+ SILC_LOG_DEBUG(("Add client public key to repository"));
+ if (!silc_server_get_public_key_by_client(server, client, NULL))
+ silc_skr_add_public_key_simple(server->repository,
+ entry->data.public_key,
+ SILC_SKR_USAGE_IDENTIFICATION, client,
+ NULL);
+
+ id_entry = (void *)client;
break;
+ }
+
+ case SILC_CONN_SERVER:
+ case SILC_CONN_ROUTER:
+ {
+ SilcServerEntry new_server;
+ SilcBool initiator = FALSE;
+ SilcBool backup_local = FALSE;
+ SilcBool backup_router = FALSE;
+ char *backup_replace_ip = NULL;
+ SilcUInt16 backup_replace_port = 0;
+ SilcServerConfigServer *srvconn = entry->sconfig.ref_ptr;
+ SilcServerConfigRouter *rconn = entry->rconfig.ref_ptr;
+
+ /* If we are backup router and this is incoming server connection
+ and we do not have connection to primary router, do not allow
+ the connection. */
+ if (server->server_type == SILC_BACKUP_ROUTER &&
+ entry->conn_type == SILC_CONN_SERVER &&
+ !SILC_PRIMARY_ROUTE(server)) {
+ SILC_LOG_INFO(("Will not accept server connection because we do "
+ "not have primary router connection established"));
+ silc_server_disconnect_remote(server, sock,
+ SILC_STATUS_ERR_PERM_DENIED,
+ "We do not have connection to primary "
+ "router established, try later");
+ silc_server_config_unref(&entry->cconfig);
+ silc_server_config_unref(&entry->sconfig);
+ silc_server_config_unref(&entry->rconfig);
+ silc_server_free_sock_user_data(server, sock, NULL);
+ server->stat.auth_failures++;
+ goto out;
+ }
+
+ if (entry->conn_type == SILC_CONN_ROUTER) {
+ /* Verify whether this connection is after all allowed to connect */
+ if (!silc_server_connection_allowed(server, sock,
+ entry->conn_type,
+ &server->config->param,
+ rconn ? rconn->param : NULL,
+ silc_connauth_get_ske(connauth))) {
+ silc_server_config_unref(&entry->cconfig);
+ silc_server_config_unref(&entry->sconfig);
+ silc_server_config_unref(&entry->rconfig);
+ server->stat.auth_failures++;
+ goto out;
+ }
+
+ if (rconn) {
+ if (rconn->param) {
+ param = rconn->param;
+
+ if (!param->keepalive_secs)
+ param->keepalive_secs = server->config->param.keepalive_secs;
+
+ if (!param->qos && server->config->param.qos) {
+ param->qos = server->config->param.qos;
+ param->qos_rate_limit = server->config->param.qos_rate_limit;
+ param->qos_bytes_limit = server->config->param.qos_bytes_limit;
+ param->qos_limit_sec = server->config->param.qos_limit_sec;
+ param->qos_limit_usec = server->config->param.qos_limit_usec;
+ }
+ }
+
+ initiator = rconn->initiator;
+ backup_local = rconn->backup_local;
+ backup_router = rconn->backup_router;
+ backup_replace_ip = rconn->backup_replace_ip;
+ backup_replace_port = rconn->backup_replace_port;
+ }
+ }
+
+ if (entry->conn_type == SILC_CONN_SERVER) {
+ /* Verify whether this connection is after all allowed to connect */
+ if (!silc_server_connection_allowed(server, sock,
+ entry->conn_type,
+ &server->config->param,
+ srvconn ? srvconn->param : NULL,
+ silc_connauth_get_ske(connauth))) {
+ server->stat.auth_failures++;
+ goto out;
+ }
+ if (srvconn) {
+ if (srvconn->param) {
+ param = srvconn->param;
+
+ if (!param->keepalive_secs)
+ param->keepalive_secs = server->config->param.keepalive_secs;
+
+ if (!param->qos && server->config->param.qos) {
+ param->qos = server->config->param.qos;
+ param->qos_rate_limit = server->config->param.qos_rate_limit;
+ param->qos_bytes_limit = server->config->param.qos_bytes_limit;
+ param->qos_limit_sec = server->config->param.qos_limit_sec;
+ param->qos_limit_usec = server->config->param.qos_limit_usec;
+ }
+ }
+
+ backup_router = srvconn->backup_router;
+ }
+ }
+
+ /* If we are primary router and we have backup router configured
+ but it has not connected to use yet, do not accept any other
+ connection. */
+ if (server->wait_backup && server->server_type == SILC_ROUTER &&
+ !server->backup_router && !backup_router) {
+ SilcServerConfigRouter *router;
+ router = silc_server_config_get_backup_router(server);
+ if (router && strcmp(server->config->server_info->primary->server_ip,
+ ip) &&
+ silc_server_find_socket_by_host(server,
+ SILC_CONN_SERVER,
+ router->backup_replace_ip, 0)) {
+ SILC_LOG_INFO(("Will not accept connections because we do "
+ "not have backup router connection established"));
+ silc_server_disconnect_remote(server, sock,
+ SILC_STATUS_ERR_PERM_DENIED,
+ "We do not have connection to backup "
+ "router established, try later");
+ silc_server_config_unref(&entry->cconfig);
+ silc_server_config_unref(&entry->sconfig);
+ silc_server_config_unref(&entry->rconfig);
+ silc_server_free_sock_user_data(server, sock, NULL);
+ server->stat.auth_failures++;
+
+ /* From here on, wait 20 seconds for the backup router to appear. */
+ silc_schedule_task_add_timeout(server->schedule,
+ silc_server_backup_router_wait,
+ (void *)server, 20, 0);
+ goto out;
+ }
+ }
+
+ SILC_LOG_DEBUG(("Remote host is %s",
+ entry->conn_type == SILC_CONN_SERVER ?
+ "server" : (backup_router ?
+ "backup router" : "router")));
+ SILC_LOG_INFO(("Connection %s (%s) is %s", entry->hostname,
+ entry->ip, entry->conn_type == SILC_CONN_SERVER ?
+ "server" : (backup_router ?
+ "backup router" : "router")));
+
+ /* Add the server into server cache. The server name and Server ID
+ is updated after we have received NEW_SERVER packet from the
+ server. We mark ourselves as router for this server if we really
+ are router. */
+ new_server =
+ silc_idlist_add_server((entry->conn_type == SILC_CONN_SERVER ?
+ server->local_list : (backup_router ?
+ server->local_list :
+ server->global_list)),
+ NULL,
+ (entry->conn_type == SILC_CONN_SERVER ?
+ SILC_SERVER : SILC_ROUTER),
+ NULL,
+ (entry->conn_type == SILC_CONN_SERVER ?
+ server->id_entry : (backup_router ?
+ server->id_entry : NULL)),
+ sock);
+ if (!new_server) {
+ SILC_LOG_ERROR(("Could not add new server to cache"));
+ silc_server_disconnect_remote(server, sock,
+ SILC_STATUS_ERR_AUTH_FAILED, NULL);
+ silc_server_config_unref(&entry->cconfig);
+ silc_server_config_unref(&entry->sconfig);
+ silc_server_config_unref(&entry->rconfig);
+ silc_server_free_sock_user_data(server, sock, NULL);
+ server->stat.auth_failures++;
+ goto out;
+ }
+ entry->data.status |= SILC_IDLIST_STATUS_LOCAL;
+ entry->data.conn_type = entry->conn_type;
+
+ id_entry = (void *)new_server;
+
+ /* If the incoming connection is router and marked as backup router
+ then add it to be one of our backups */
+ if (entry->data.conn_type == SILC_CONN_ROUTER && backup_router) {
+ /* Change it back to SERVER type since that's what it really is. */
+ if (backup_local)
+ entry->data.conn_type = SILC_CONN_SERVER;
+ new_server->server_type = SILC_BACKUP_ROUTER;
+
+ SILC_SERVER_SEND_OPERS(server, FALSE, TRUE, SILC_NOTIFY_TYPE_NONE,
+ ("Backup router %s is now online",
+ entry->hostname));
+
+ /* Remove the backup waiting with timeout */
+ silc_schedule_task_add_timeout(server->schedule,
+ silc_server_backup_router_wait,
+ (void *)server, 10, 0);
+ }
+
+ /* Statistics */
+ if (entry->data.conn_type == SILC_CONN_SERVER) {
+ server->stat.my_servers++;
+ server->stat.servers++;
+ SILC_LOG_DEBUG(("my_servers %d", server->stat.my_servers));
+ } else {
+ server->stat.my_routers++;
+ server->stat.routers++;
+ SILC_LOG_DEBUG(("my_routers %d", server->stat.my_routers));
+ }
+
+ /* Check whether this connection is to be our primary router connection
+ if we do not already have the primary route. */
+ if (!backup_router &&
+ server->standalone && entry->data.conn_type == SILC_CONN_ROUTER) {
+ if (silc_server_config_is_primary_route(server) && !initiator)
+ break;
+
+ SILC_LOG_DEBUG(("We are not standalone server anymore"));
+ server->standalone = FALSE;
+ if (!server->id_entry->router) {
+ server->id_entry->router = id_entry;
+ server->router = id_entry;
+ }
+ }
+
+ break;
+ }
+
+ default:
+ goto out;
+ break;
+ }
+
+ /* Add connection to server->conns so that we know we have connection
+ to this peer. */
+ sconn = silc_calloc(1, sizeof(*sconn));
+ sconn->server = server;
+ sconn->sock = sock;
+ sconn->remote_host = strdup(hostname);
+ sconn->remote_port = port;
+ silc_dlist_add(server->conns, sconn);
+ idata->sconn = sconn;
+ idata->last_receive = time(NULL);
+
+ /* Add the common data structure to the ID entry. */
+ silc_idlist_add_data(id_entry, (SilcIDListData)entry);
+ silc_packet_set_context(sock, id_entry);
+
+ /* Connection has been fully established now. Everything is ok. */
+ SILC_LOG_DEBUG(("New connection %p authenticated", sconn));
+
+ /* Perform Quality of Service */
+ if (param->qos)
+ silc_socket_stream_set_qos(silc_packet_stream_get_stream(sock),
+ param->qos_rate_limit, param->qos_bytes_limit,
+ param->qos_limit_sec, param->qos_limit_usec);
+
+ silc_server_config_unref(&entry->cconfig);
+ silc_server_config_unref(&entry->sconfig);
+ silc_server_config_unref(&entry->rconfig);
+ silc_free(entry);
+
+ out:
+ silc_ske_free(silc_connauth_get_ske(connauth));
+ silc_connauth_free(connauth);
+}
+
+/* SKE completion callback. We set the new keys into use here. */
+
+static void
+silc_server_accept_completed(SilcSKE ske, SilcSKEStatus status,
+ SilcSKESecurityProperties prop,
+ SilcSKEKeyMaterial keymat,
+ SilcSKERekeyMaterial rekey,
+ void *context)
+{
+ SilcPacketStream sock = context;
+ SilcUnknownEntry entry = silc_packet_get_context(sock);
+ SilcIDListData idata = (SilcIDListData)entry;
+ SilcServer server = entry->server;
+ SilcConnAuth connauth;
+ SilcCipher send_key, receive_key;
+ SilcHmac hmac_send, hmac_receive;
+ SilcHash hash;
+ unsigned char *pk;
+ SilcUInt32 pk_len;
+
+ entry->op = NULL;
+
+ if (status != SILC_SKE_STATUS_OK) {
+ /* SKE failed */
+ SILC_LOG_ERROR(("Error (%s) during Key Exchange protocol with %s (%s)",
+ silc_ske_map_status(status), entry->hostname, entry->ip));
+ silc_ske_free(ske);
+ silc_server_disconnect_remote(server, sock,
+ SILC_STATUS_ERR_KEY_EXCHANGE_FAILED, NULL);
+ silc_server_config_unref(&entry->cconfig);
+ silc_server_config_unref(&entry->sconfig);
+ silc_server_config_unref(&entry->rconfig);
+ silc_server_free_sock_user_data(server, sock, NULL);
+ return;
+ }
+
+ SILC_LOG_DEBUG(("Setting keys into use"));
+
+ /* Set the keys into use. The data will be encrypted after this. */
+ if (!silc_ske_set_keys(ske, keymat, prop, &send_key, &receive_key,
+ &hmac_send, &hmac_receive, &hash)) {
+ /* Error setting keys */
+ silc_ske_free(ske);
+ silc_server_disconnect_remote(server, sock,
+ SILC_STATUS_ERR_KEY_EXCHANGE_FAILED, NULL);
+ silc_server_free_sock_user_data(server, sock, NULL);
+ return;
+ }
+ silc_packet_set_keys(sock, send_key, receive_key, hmac_send,
+ hmac_receive, FALSE);
+
+ idata->rekey = rekey;
+ idata->public_key = silc_pkcs_public_key_copy(prop->public_key);
+ pk = silc_pkcs_public_key_encode(idata->public_key, &pk_len);
+ silc_hash_make(server->sha1hash, pk, pk_len, idata->fingerprint);
+
+ silc_hash_alloc(silc_hash_get_name(prop->hash), &idata->hash);
+
+ SILC_LOG_DEBUG(("Starting connection authentication"));
+ server->stat.auth_attempts++;
+
+ connauth = silc_connauth_alloc(server->schedule, ske,
+ server->config->conn_auth_timeout);
+ if (!connauth) {
+ /** Error allocating auth protocol */
+ silc_ske_free(ske);
+ silc_server_disconnect_remote(server, sock,
+ SILC_STATUS_ERR_RESOURCE_LIMIT, NULL);
+ silc_server_config_unref(&entry->cconfig);
+ silc_server_config_unref(&entry->sconfig);
+ silc_server_config_unref(&entry->rconfig);
+ silc_server_free_sock_user_data(server, sock, NULL);
+ return;
+ }
+
+ /* Start connection authentication */
+ entry->op =
+ silc_connauth_responder(connauth, silc_server_accept_get_auth,
+ silc_server_accept_auth_compl, sock);
+}
+
+/* Accept new TCP connection */
+
+static void silc_server_accept_new_connection(SilcNetStatus status,
+ SilcStream stream,
+ void *context)
+{
+ SilcServer server = context;
+ SilcPacketStream packet_stream;
+ SilcServerConfigClient *cconfig = NULL;
+ SilcServerConfigServer *sconfig = NULL;
+ SilcServerConfigRouter *rconfig = NULL;
+ SilcServerConfigDeny *deny;
+ SilcUnknownEntry entry;
+ SilcSKE ske;
+ SilcSKEParamsStruct params;
+ char *hostname, *ip;
+ SilcUInt16 port;
+
+ SILC_LOG_DEBUG(("Accepting new connection"));
+
+ /* Check for maximum allowed connections */
+ server->stat.conn_attempts++;
+ if (silc_dlist_count(server->conns) >
+ server->config->param.connections_max) {
+ SILC_LOG_ERROR(("Refusing connection, server is full"));
+ server->stat.conn_failures++;
+ silc_stream_destroy(stream);
+ return;
+ }
+
+ /* Get hostname, IP and port */
+ if (!silc_socket_stream_get_info(stream, NULL, (const char **)&hostname,
+ (const char **)&ip, &port)) {
+ /* Bad socket stream */
+ server->stat.conn_failures++;
+ silc_stream_destroy(stream);
+ return;
+ }
+
+ /* Create packet stream */
+ packet_stream = silc_packet_stream_create(server->packet_engine,
+ server->schedule, stream);
+ if (!packet_stream) {
+ SILC_LOG_ERROR(("Refusing connection, cannot create packet stream"));
+ server->stat.conn_failures++;
+ silc_stream_destroy(stream);
+ return;
+ }
+ server->stat.conn_num++;
+
+ SILC_LOG_DEBUG(("Created packet stream %p", packet_stream));
+
+ /* Set source ID to packet stream */
+ if (!silc_packet_set_ids(packet_stream, SILC_ID_SERVER, server->id,
+ 0, NULL)) {
+ /* Out of memory */
+ server->stat.conn_failures++;
+ silc_packet_stream_destroy(packet_stream);
+ return;
+ }
+
+ /* Check whether this connection is denied to connect to us. */
+ deny = silc_server_config_find_denied(server, ip);
+ if (!deny)
+ deny = silc_server_config_find_denied(server, hostname);
+ if (deny) {
+ /* The connection is denied */
+ SILC_LOG_INFO(("Connection %s (%s) is denied", hostname, ip));
+ silc_server_disconnect_remote(server, packet_stream,
+ SILC_STATUS_ERR_BANNED_FROM_SERVER,
+ deny->reason);
+ silc_server_free_sock_user_data(server, packet_stream, NULL);
+ return;
+ }
+
+ /* Check whether we have configured this sort of connection at all. We
+ have to check all configurations since we don't know what type of
+ connection this is. */
+ if (!(cconfig = silc_server_config_find_client(server, ip)))
+ cconfig = silc_server_config_find_client(server, hostname);
+ if (!(sconfig = silc_server_config_find_server_conn(server, ip)))
+ sconfig = silc_server_config_find_server_conn(server, hostname);
+ if (server->server_type == SILC_ROUTER)
+ if (!(rconfig = silc_server_config_find_router_conn(server, ip, port)))
+ rconfig = silc_server_config_find_router_conn(server, hostname, port);
+ if (!cconfig && !sconfig && !rconfig) {
+ SILC_LOG_INFO(("Connection %s (%s) is not allowed", hostname, ip));
+ server->stat.conn_failures++;
+ silc_server_disconnect_remote(server, packet_stream,
+ SILC_STATUS_ERR_BANNED_FROM_SERVER, NULL);
+ silc_server_free_sock_user_data(server, packet_stream, NULL);
+ return;
+ }
+
+ /* The connection is allowed */
+ entry = silc_calloc(1, sizeof(*entry));
+ if (!entry) {
+ server->stat.conn_failures++;
+ silc_server_disconnect_remote(server, packet_stream,
+ SILC_STATUS_ERR_RESOURCE_LIMIT, NULL);
+ silc_server_free_sock_user_data(server, packet_stream, NULL);
+ return;
+ }
+ entry->hostname = hostname;
+ entry->ip = ip;
+ entry->port = port;
+ entry->server = server;
+ entry->data.conn_type = SILC_CONN_UNKNOWN;
+ silc_packet_set_context(packet_stream, entry);
+
+ SILC_LOG_DEBUG(("Created unknown connection %p", entry));
+
+ silc_server_config_ref(&entry->cconfig, server->config, cconfig);
+ silc_server_config_ref(&entry->sconfig, server->config, sconfig);
+ silc_server_config_ref(&entry->rconfig, server->config, rconfig);
+
+ /* Take flags for key exchange. Since we do not know what type of connection
+ this is, we go through all found configurations and use the global ones
+ as well. This will result always into strictest key exchange flags. */
+ memset(¶ms, 0, sizeof(params));
+ SILC_GET_SKE_FLAGS(cconfig, params.flags);
+ SILC_GET_SKE_FLAGS(sconfig, params.flags);
+ SILC_GET_SKE_FLAGS(rconfig, params.flags);
+ if (server->config->param.key_exchange_pfs)
+ params.flags |= SILC_SKE_SP_FLAG_PFS;
+
+ SILC_LOG_INFO(("Incoming connection %s (%s)", hostname, ip));
+ server->stat.conn_attempts++;
+
+ /* Start SILC Key Exchange protocol */
+ SILC_LOG_DEBUG(("Starting key exchange protocol"));
+ ske = silc_ske_alloc(server->rng, server->schedule, server->repository,
+ server->public_key, server->private_key,
+ packet_stream);
+ if (!ske) {
+ server->stat.conn_failures++;
+ silc_server_disconnect_remote(server, packet_stream,
+ SILC_STATUS_ERR_RESOURCE_LIMIT, NULL);
+ silc_server_free_sock_user_data(server, packet_stream, NULL);
+ return;
+ }
+ silc_ske_set_callbacks(ske, silc_server_verify_key,
+ silc_server_accept_completed, packet_stream);
- if (sock->protocol && sock->protocol->protocol->type
- == SILC_PROTOCOL_SERVER_CONNECTION_AUTH) {
+ /* Start key exchange protocol */
+ params.version = silc_version_string;
+ params.timeout_secs = server->config->key_exchange_timeout;
+ entry->op = silc_ske_responder(ske, packet_stream, ¶ms);
+}
- SilcServerConnAuthInternalContext *proto_ctx =
- (SilcServerConnAuthInternalContext *)sock->protocol->context;
- proto_ctx->packet = silc_packet_context_dup(packet);
+/********************************** Rekey ***********************************/
- /* Let the protocol handle the packet */
- silc_protocol_execute(sock->protocol, server->schedule, 0, 0);
- } else {
- SILC_LOG_ERROR(("Received Connection Auth packet but no authentication "
- "protocol active, packet dropped."));
- }
- break;
+/* Initiator rekey completion callback */
- case SILC_PACKET_NEW_ID:
- /*
- * Received New ID packet. This includes some new ID that has been
- * created. It may be for client, server or channel. This is the way
- * to distribute information about new registered entities in the
- * SILC network.
- */
- SILC_LOG_DEBUG(("New ID packet"));
- if (packet->flags & SILC_PACKET_FLAG_LIST)
- silc_server_new_id_list(server, sock, packet);
- else
- silc_server_new_id(server, sock, packet);
- break;
+static void silc_server_rekey_completion(SilcSKE ske,
+ SilcSKEStatus status,
+ const SilcSKESecurityProperties prop,
+ const SilcSKEKeyMaterial keymat,
+ SilcSKERekeyMaterial rekey,
+ void *context)
+{
+ SilcPacketStream sock = context;
+ SilcIDListData idata = silc_packet_get_context(sock);
+ SilcServer server = idata->sconn->server;
+
+ idata->sconn->op = NULL;
+ if (status != SILC_SKE_STATUS_OK) {
+ SILC_LOG_ERROR(("Error during rekey protocol with %s",
+ idata->sconn->remote_host));
+ return;
+ }
- case SILC_PACKET_NEW_CLIENT:
- /*
- * Received new client packet. This includes client information that
- * we will use to create initial client ID. After creating new
- * ID we will send it to the client.
- */
- SILC_LOG_DEBUG(("New Client packet"));
- if (packet->flags & SILC_PACKET_FLAG_LIST)
- break;
- silc_server_new_client(server, sock, packet);
- break;
+ SILC_LOG_DEBUG(("Rekey protocol completed with %s:%d [%s]",
+ idata->sconn->remote_host, idata->sconn->remote_port,
+ SILC_CONNTYPE_STRING(idata->conn_type)));
- case SILC_PACKET_NEW_SERVER:
- /*
- * Received new server packet. This includes Server ID and some other
- * information that we may save. This is received after server has
- * connected to us.
- */
- SILC_LOG_DEBUG(("New Server packet"));
- if (packet->flags & SILC_PACKET_FLAG_LIST)
- break;
- silc_server_new_server(server, sock, packet);
- break;
+ /* Save rekey data for next rekey */
+ idata->rekey = rekey;
- case SILC_PACKET_NEW_CHANNEL:
- /*
- * Received new channel packet. Information about new channel in the
- * network are distributed using this packet.
- */
- SILC_LOG_DEBUG(("New Channel packet"));
- if (packet->flags & SILC_PACKET_FLAG_LIST)
- silc_server_new_channel_list(server, sock, packet);
- else
- silc_server_new_channel(server, sock, packet);
- break;
+ /* Register new rekey timeout */
+ silc_schedule_task_add_timeout(server->schedule, silc_server_do_rekey,
+ sock, idata->sconn->rekey_timeout, 0);
+}
- case SILC_PACKET_HEARTBEAT:
- /*
- * Received heartbeat.
- */
- SILC_LOG_DEBUG(("Heartbeat packet"));
- if (packet->flags & SILC_PACKET_FLAG_LIST)
- break;
- break;
+/* Rekey callback. Start rekey as initiator */
- case SILC_PACKET_KEY_AGREEMENT:
- /*
- * Received heartbeat.
- */
- SILC_LOG_DEBUG(("Key agreement packet"));
- if (packet->flags & SILC_PACKET_FLAG_LIST)
- break;
- silc_server_key_agreement(server, sock, packet);
- break;
+SILC_TASK_CALLBACK(silc_server_do_rekey)
+{
+ SilcServer server = app_context;
+ SilcPacketStream sock = context;
+ SilcIDListData idata = silc_packet_get_context(sock);
+ SilcSKE ske;
- case SILC_PACKET_REKEY:
- /*
- * Received re-key packet. The sender wants to regenerate the session
- * keys.
- */
- SILC_LOG_DEBUG(("Re-key packet"));
- if (packet->flags & SILC_PACKET_FLAG_LIST)
- break;
- silc_server_rekey(server, sock, packet);
- break;
+ SILC_LOG_DEBUG(("Perform rekey, sock %p", sock));
- case SILC_PACKET_REKEY_DONE:
- /*
- * The re-key is done.
- */
- SILC_LOG_DEBUG(("Re-key done packet"));
- if (packet->flags & SILC_PACKET_FLAG_LIST)
- break;
+ /* Do not execute rekey with disabled connections */
+ if (idata->status & SILC_IDLIST_STATUS_DISABLED)
+ return;
- if (sock->protocol && sock->protocol->protocol &&
- sock->protocol->protocol->type == SILC_PROTOCOL_SERVER_REKEY) {
+ /* If another protocol is active do not start rekey */
+ if (idata->sconn->op) {
+ SILC_LOG_DEBUG(("Waiting for other protocol to finish before rekeying"));
+ silc_schedule_task_add_timeout(server->schedule, silc_server_do_rekey,
+ sock, 60, 0);
+ return;
+ }
- SilcServerRekeyInternalContext *proto_ctx =
- (SilcServerRekeyInternalContext *)sock->protocol->context;
+ SILC_LOG_DEBUG(("Executing rekey protocol with %s:%d [%s]",
+ idata->sconn->remote_host, idata->sconn->remote_port,
+ SILC_CONNTYPE_STRING(idata->conn_type)));
- if (proto_ctx->packet)
- silc_packet_context_free(proto_ctx->packet);
+ /* Allocate SKE */
+ ske = silc_ske_alloc(server->rng, server->schedule, NULL,
+ server->public_key, NULL, sock);
+ if (!ske)
+ return;
- proto_ctx->packet = silc_packet_context_dup(packet);
+ /* Set SKE callbacks */
+ silc_ske_set_callbacks(ske, NULL, silc_server_rekey_completion, sock);
- /* Let the protocol handle the packet */
- silc_protocol_execute(sock->protocol, server->schedule, 0, 0);
- } else {
- SILC_LOG_ERROR(("Received Re-key done packet but no re-key "
- "protocol active, packet dropped."));
- }
- break;
+ /* Perform rekey */
+ idata->sconn->op = silc_ske_rekey_initiator(ske, sock, idata->rekey);
+}
- case SILC_PACKET_FTP:
- /* FTP packet */
- SILC_LOG_DEBUG(("FTP packet"));
- if (packet->flags & SILC_PACKET_FLAG_LIST)
- break;
- silc_server_ftp(server, sock, packet);
- break;
+/* Responder rekey completion callback */
- case SILC_PACKET_RESUME_ROUTER:
- /* Resume router packet received. This packet is received for backup
- router resuming protocol. */
- SILC_LOG_DEBUG(("Resume router packet"));
- if (packet->flags & SILC_PACKET_FLAG_LIST)
- break;
- silc_server_backup_resume_router(server, sock, packet);
- break;
+static void
+silc_server_rekey_resp_completion(SilcSKE ske,
+ SilcSKEStatus status,
+ const SilcSKESecurityProperties prop,
+ const SilcSKEKeyMaterial keymat,
+ SilcSKERekeyMaterial rekey,
+ void *context)
+{
+ SilcPacketStream sock = context;
+ SilcIDListData idata = silc_packet_get_context(sock);
- default:
- SILC_LOG_ERROR(("Incorrect packet type %d, packet dropped", type));
- break;
+ idata->sconn->op = NULL;
+ if (status != SILC_SKE_STATUS_OK) {
+ SILC_LOG_ERROR(("Error during rekey protocol with %s",
+ idata->sconn->remote_host));
+ return;
}
-
+
+ SILC_LOG_DEBUG(("Rekey protocol completed with %s:%d [%s]",
+ idata->sconn->remote_host, idata->sconn->remote_port,
+ SILC_CONNTYPE_STRING(idata->conn_type)));
+
+ /* Save rekey data for next rekey */
+ idata->rekey = rekey;
}
-/* Creates connection to a remote router. */
+/* Start rekey as responder */
-void silc_server_create_connection(SilcServer server,
- char *remote_host, uint32 port)
+static void silc_server_rekey(SilcServer server, SilcPacketStream sock,
+ SilcPacket packet)
{
- SilcServerConnection sconn;
+ SilcIDListData idata = silc_packet_get_context(sock);
+ SilcSKE ske;
+
+ SILC_LOG_DEBUG(("Executing rekey protocol with %s:%d [%s], sock %p",
+ idata->sconn->remote_host, idata->sconn->remote_port,
+ SILC_CONNTYPE_STRING(idata->conn_type), sock));
+
+ /* Allocate SKE */
+ ske = silc_ske_alloc(server->rng, server->schedule, NULL,
+ server->public_key, NULL, sock);
+ if (!ske) {
+ silc_packet_free(packet);
+ return;
+ }
- /* Allocate connection object for hold connection specific stuff. */
- sconn = silc_calloc(1, sizeof(*sconn));
- sconn->server = server;
- sconn->remote_host = strdup(remote_host);
- sconn->remote_port = port;
+ /* Set SKE callbacks */
+ silc_ske_set_callbacks(ske, NULL, silc_server_rekey_resp_completion, sock);
- silc_schedule_task_add(server->schedule, 0,
- silc_server_connect_router,
- (void *)sconn, 0, 1, SILC_TASK_TIMEOUT,
- SILC_TASK_PRI_NORMAL);
+ /* Perform rekey */
+ idata->sconn->op = silc_ske_rekey_responder(ske, sock, idata->rekey,
+ packet);
}
+
+/****************************** Disconnection *******************************/
+
+/* Destroys packet stream. */
+
SILC_TASK_CALLBACK(silc_server_close_connection_final)
{
- silc_socket_free((SilcSocketConnection)context);
+ silc_packet_stream_unref(context);
}
/* Closes connection to socket connection */
void silc_server_close_connection(SilcServer server,
- SilcSocketConnection sock)
+ SilcPacketStream sock)
{
- if (!server->sockets[sock->sock])
+ SilcIDListData idata = silc_packet_get_context(sock);
+ char tmp[128];
+ const char *hostname;
+ SilcUInt16 port;
+
+ if (!silc_packet_stream_is_valid(sock))
return;
- SILC_LOG_INFO(("Closing connection %s:%d [%s]", sock->hostname,
- sock->port,
- (sock->type == SILC_SOCKET_TYPE_UNKNOWN ? "Unknown" :
- sock->type == SILC_SOCKET_TYPE_CLIENT ? "Client" :
- sock->type == SILC_SOCKET_TYPE_SERVER ? "Server" :
- "Router")));
-
- /* We won't listen for this connection anymore */
- silc_schedule_unset_listen_fd(server->schedule, sock->sock);
-
- /* Unregister all tasks */
- silc_schedule_task_del_by_fd(server->schedule, sock->sock);
-
- /* Close the actual connection */
- silc_net_close_connection(sock->sock);
- server->sockets[sock->sock] = NULL;
-
- /* If sock->user_data is NULL then we'll check for active protocols
- here since the silc_server_free_sock_user_data has not been called
- for this connection. */
- if (!sock->user_data) {
- /* If any protocol is active cancel its execution. It will call
- the final callback which will finalize the disconnection. */
- if (sock->protocol) {
- silc_protocol_cancel(sock->protocol, server->schedule);
- sock->protocol->state = SILC_PROTOCOL_STATE_ERROR;
- silc_protocol_execute_final(sock->protocol, server->schedule);
- sock->protocol = NULL;
- return;
- }
+ memset(tmp, 0, sizeof(tmp));
+ // silc_socket_get_error(sock, tmp, sizeof(tmp));
+ silc_socket_stream_get_info(silc_packet_stream_get_stream(sock),
+ NULL, &hostname, NULL, &port);
+ SILC_LOG_INFO(("Closing connection %s:%d [%s] %s", hostname, port,
+ idata ? SILC_CONNTYPE_STRING(idata->conn_type) : "",
+ tmp[0] ? tmp : ""));
+
+ // silc_socket_set_qos(sock, 0, 0, 0, 0, NULL);
+
+ if (idata && idata->sconn) {
+ silc_server_connection_free(idata->sconn);
+ idata->sconn = NULL;
}
- silc_schedule_task_add(server->schedule, 0,
- silc_server_close_connection_final,
- (void *)sock, 0, 1, SILC_TASK_TIMEOUT,
- SILC_TASK_PRI_NORMAL);
+ /* Take a reference and then destroy the stream. The last reference
+ is released later in a timeout callback. */
+ silc_packet_stream_ref(sock);
+ silc_packet_stream_destroy(sock);
+
+ /* Close connection with timeout */
+ server->stat.conn_num--;
+ silc_schedule_task_del_by_all(server->schedule, 0,
+ silc_server_close_connection_final, sock);
+ silc_schedule_task_add_timeout(server->schedule,
+ silc_server_close_connection_final,
+ sock, 0, 1);
}
-/* Sends disconnect message to remote connection and disconnects the
+/* Sends disconnect message to remote connection and disconnects the
connection. */
void silc_server_disconnect_remote(SilcServer server,
- SilcSocketConnection sock,
- const char *fmt, ...)
+ SilcPacketStream sock,
+ SilcStatus status, ...)
{
+ unsigned char buf[512];
va_list ap;
- unsigned char buf[4096];
+ char *cp;
if (!sock)
return;
- memset(buf, 0, sizeof(buf));
- va_start(ap, fmt);
- vsprintf(buf, fmt, ap);
- va_end(ap);
+ SILC_LOG_DEBUG(("Disconnecting remote host, sock %p", sock));
- SILC_LOG_DEBUG(("Disconnecting remote host"));
+ va_start(ap, status);
+ cp = va_arg(ap, char *);
+ if (cp)
+ silc_vsnprintf(buf, sizeof(buf), cp, ap);
+ va_end(ap);
- /* Notify remote end that the conversation is over. The notify message
- is tried to be sent immediately. */
- silc_server_packet_send(server, sock, SILC_PACKET_DISCONNECT, 0,
- buf, strlen(buf), TRUE);
+ /* Send SILC_PACKET_DISCONNECT */
+ silc_packet_send_va(sock, SILC_PACKET_DISCONNECT, 0,
+ SILC_STR_UI_CHAR(status),
+ SILC_STR_UI8_STRING(cp ? buf : NULL),
+ SILC_STR_END);
- /* Mark the connection to be disconnected */
- SILC_SET_DISCONNECTED(sock);
+ /* Close connection */
silc_server_close_connection(server, sock);
}
-typedef struct {
- SilcServer server;
- SilcClientEntry client;
-} *FreeClientInternal;
-
-SILC_TASK_CALLBACK(silc_server_free_client_data_timeout)
-{
- FreeClientInternal i = (FreeClientInternal)context;
-
- silc_idlist_del_data(i->client);
- silc_idcache_purge_by_context(i->server->local_list->clients, i->client);
- silc_free(i);
-}
-
/* Frees client data and notifies about client's signoff. */
-void silc_server_free_client_data(SilcServer server,
- SilcSocketConnection sock,
- SilcClientEntry client,
+void silc_server_free_client_data(SilcServer server,
+ SilcPacketStream sock,
+ SilcClientEntry client,
int notify,
- char *signoff)
+ const char *signoff)
{
- FreeClientInternal i = silc_calloc(1, sizeof(*i));
+ SILC_LOG_DEBUG(("Freeing client %p data", client));
- /* If there is pending outgoing data for the client then purge it
- to the network before removing the client entry. */
- silc_server_packet_queue_purge(server, sock);
+ if (client->id) {
+ /* 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);
- if (!client->id)
- return;
+ /* Send SIGNOFF notify to routers. */
+ if (notify)
+ silc_server_send_notify_signoff(server, SILC_PRIMARY_ROUTE(server),
+ SILC_BROADCAST(server), client->id,
+ signoff);
+ }
- /* Send SIGNOFF notify to routers. */
- if (notify && !server->standalone && server->router)
- silc_server_send_notify_signoff(server, server->router->connection,
- server->server_type == SILC_SERVER ?
- FALSE : TRUE, client->id, signoff);
-
/* Remove client from all channels */
if (notify)
- silc_server_remove_from_channels(server, NULL, client,
- TRUE, signoff, TRUE);
+ silc_server_remove_from_channels(server, NULL, client,
+ TRUE, (char *)signoff, TRUE, FALSE);
else
- silc_server_remove_from_channels(server, NULL, client,
- FALSE, NULL, FALSE);
-
- /* We will not delete the client entry right away. We will take it
- into history (for WHOWAS command) for 5 minutes */
- i->server = server;
- i->client = client;
- silc_schedule_task_add(server->schedule, 0,
- silc_server_free_client_data_timeout,
- (void *)i, 300, 0,
- SILC_TASK_TIMEOUT, SILC_TASK_PRI_LOW);
- client->data.status &= ~SILC_IDLIST_STATUS_REGISTERED;
- client->router = NULL;
- client->connection = NULL;
-
- /* Free the client entry and everything in it */
+ silc_server_remove_from_channels(server, NULL, client,
+ FALSE, NULL, FALSE, FALSE);
+
+ /* Remove this client from watcher list if it is */
+ silc_server_del_from_watcher_list(server, client);
+
+ /* Remove client's public key from repository, this will free it too. */
+ if (client->data.public_key) {
+ silc_skr_del_public_key(server->repository, client->data.public_key,
+ client);
+ client->data.public_key = NULL;
+ }
+
+ /* Update statistics */
server->stat.my_clients--;
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);
+
+ if (client->data.sconn) {
+ silc_server_connection_free(client->data.sconn);
+ client->data.sconn = NULL;
+ }
+
+ /* We will not delete the client entry right away. We will take it
+ into history (for WHOWAS command) for 5 minutes, unless we're
+ shutting down server. */
+ if (!server->server_shutdown) {
+ client->data.status &= ~SILC_IDLIST_STATUS_REGISTERED;
+ client->mode = 0;
+ client->router = NULL;
+ client->connection = NULL;
+ client->data.created = silc_time();
+ silc_dlist_del(server->expired_clients, client);
+ silc_dlist_add(server->expired_clients, client);
+ } else {
+ /* Delete directly since we're shutting down server */
+ SILC_LOG_DEBUG(("Delete client directly"));
+ silc_idlist_del_data(client);
+ silc_idlist_del_client(server->local_list, client);
+ }
}
/* Frees user_data pointer from socket connection object. This also sends
appropriate notify packets to the network to inform about leaving
entities. */
-void silc_server_free_sock_user_data(SilcServer server,
- SilcSocketConnection sock)
+void silc_server_free_sock_user_data(SilcServer server,
+ SilcPacketStream sock,
+ const char *signoff_message)
{
- SILC_LOG_DEBUG(("Start"));
+ SilcIDListData idata;
+ const char *ip;
+ SilcUInt16 port;
+
+ if (!sock)
+ return;
+
+ SILC_LOG_DEBUG(("Start, sock %p", sock));
+
+ idata = silc_packet_get_context(sock);
+ if (!idata)
+ return;
- switch (sock->type) {
- case SILC_SOCKET_TYPE_CLIENT:
+ silc_schedule_task_del_by_all(server->schedule, 0, silc_server_do_rekey,
+ sock);
+
+ /* Cancel active protocols */
+ if (idata) {
+ if (idata->sconn && idata->sconn->op) {
+ SILC_LOG_DEBUG(("Abort active protocol"));
+ silc_async_abort(idata->sconn->op, NULL, NULL);
+ }
+ if (idata->conn_type == SILC_CONN_UNKNOWN &&
+ ((SilcUnknownEntry)idata)->op) {
+ SILC_LOG_DEBUG(("Abort active protocol"));
+ silc_async_abort(((SilcUnknownEntry)idata)->op, NULL, NULL);
+ }
+ }
+
+ switch (idata->conn_type) {
+ case SILC_CONN_CLIENT:
{
- SilcClientEntry user_data = (SilcClientEntry)sock->user_data;
- silc_server_free_client_data(server, sock, user_data, TRUE, NULL);
+ SilcClientEntry client_entry = (SilcClientEntry)idata;
+ silc_server_free_client_data(server, sock, client_entry, TRUE,
+ signoff_message);
+ silc_packet_set_context(sock, NULL);
break;
}
- case SILC_SOCKET_TYPE_SERVER:
- case SILC_SOCKET_TYPE_ROUTER:
+
+ case SILC_CONN_SERVER:
+ case SILC_CONN_ROUTER:
{
- SilcServerEntry user_data = (SilcServerEntry)sock->user_data;
+ SilcServerEntry user_data = (SilcServerEntry)idata;
SilcServerEntry backup_router = NULL;
+ SILC_LOG_DEBUG(("Freeing server %p data", user_data));
+
if (user_data->id)
backup_router = silc_server_backup_get(server, user_data->id);
+ if (!server->backup_router && server->server_type == SILC_ROUTER &&
+ backup_router == server->id_entry &&
+ idata->conn_type != SILC_CONN_ROUTER)
+ backup_router = NULL;
+
+ if (server->server_shutdown || server->backup_noswitch)
+ backup_router = NULL;
+
+ silc_socket_stream_get_info(silc_packet_stream_get_stream(sock),
+ NULL, NULL, &ip, &port);
+
/* If this was our primary router connection then we're lost to
the outside world. */
if (server->router == user_data) {
/* Check whether we have a backup router connection */
if (!backup_router || backup_router == user_data) {
- silc_schedule_task_add(server->schedule, 0,
- silc_server_connect_to_router,
- server, 1, 0,
- SILC_TASK_TIMEOUT,
- SILC_TASK_PRI_NORMAL);
-
+ if (!server->no_reconnect)
+ silc_server_create_connections(server);
server->id_entry->router = NULL;
server->router = NULL;
server->standalone = TRUE;
+ server->backup_primary = FALSE;
backup_router = NULL;
} else {
- SILC_LOG_INFO(("New primary router is backup router %s",
- backup_router->server_name));
- SILC_LOG_DEBUG(("New primary router is backup router %s",
- backup_router->server_name));
- server->id_entry->router = backup_router;
- server->router = backup_router;
- server->router_connect = time(0);
- server->backup_primary = TRUE;
- if (server->server_type == SILC_BACKUP_ROUTER) {
+ if (server->id_entry != backup_router) {
+ SILC_LOG_INFO(("New primary router is backup router %s",
+ backup_router->server_name));
+ server->id_entry->router = backup_router;
+ server->router = backup_router;
+ server->router_connect = time(0);
+ server->backup_primary = TRUE;
+ backup_router->data.status &= ~SILC_IDLIST_STATUS_DISABLED;
+
+ /* Send START_USE to backup router to indicate we have switched */
+ silc_server_backup_send_start_use(server,
+ backup_router->connection,
+ FALSE);
+ } else {
+ SILC_LOG_INFO(("We are now new primary router in this cell"));
+ server->id_entry->router = NULL;
+ server->router = NULL;
+ server->standalone = TRUE;
+ }
+
+ /* We stop here to take a breath */
+ sleep(2);
+
+ if (server->backup_router) {
server->server_type = SILC_ROUTER;
/* We'll need to constantly try to reconnect to the primary
router so that we'll see when it comes back online. */
- silc_server_backup_reconnect(server, sock->ip, sock->port,
+ silc_server_create_connection(server, TRUE, FALSE, ip, port,
silc_server_backup_connected,
NULL);
}
/* Mark this connection as replaced */
- silc_server_backup_replaced_add(server, user_data->id,
+ silc_server_backup_replaced_add(server, user_data->id,
backup_router);
}
} else if (backup_router) {
SILC_LOG_INFO(("Enabling the use of backup router %s",
backup_router->server_name));
- SILC_LOG_DEBUG(("Enabling the use of backup router %s",
- backup_router->server_name));
/* Mark this connection as replaced */
- silc_server_backup_replaced_add(server, user_data->id,
+ silc_server_backup_replaced_add(server, user_data->id,
backup_router);
+ } else if (server->server_type == SILC_SERVER &&
+ idata->conn_type == SILC_CONN_ROUTER) {
+ /* Reconnect to the router (backup) */
+ if (!server->no_reconnect)
+ silc_server_create_connections(server);
}
+ if (user_data->server_name)
+ SILC_SERVER_SEND_OPERS(server, FALSE, TRUE, SILC_NOTIFY_TYPE_NONE,
+ ("Server %s signoff", user_data->server_name));
+
if (!backup_router) {
- /* Free all client entries that this server owns as they will
- become invalid now as well. */
- if (user_data->id)
- silc_server_remove_clients_by_server(server, user_data, TRUE);
+ /* Remove all servers that are originated from this server, and
+ remove the clients of those servers too. */
+ silc_server_remove_servers_by_server(server, user_data, TRUE);
+
+#if 0
+ /* Remove the clients that this server owns as they will become
+ invalid now too. For backup router the server is actually
+ coming from the primary router, so mark that as the owner
+ of this entry. */
+ if (server->server_type == SILC_BACKUP_ROUTER &&
+ sock->type == SILC_CONN_SERVER)
+ silc_server_remove_clients_by_server(server, server->router,
+ user_data, TRUE);
+ else
+#endif
+ silc_server_remove_clients_by_server(server, user_data,
+ user_data, TRUE);
+
+ /* Remove channels owned by this server */
if (server->server_type == SILC_SERVER)
silc_server_remove_channels_by_server(server, user_data);
} else {
+ /* Enable local server connections that may be disabled */
+ silc_server_local_servers_toggle_enabled(server, TRUE);
+
/* Update the client entries of this server to the new backup
- router. This also removes the clients that *really* was owned
- by the primary router and went down with the router. */
- silc_server_update_clients_by_server(server, user_data, backup_router,
- TRUE, TRUE);
+ router. If we are the backup router we also resolve the real
+ servers for the clients. After updating is over this also
+ removes the clients that this server explicitly owns. */
+ silc_server_update_clients_by_server(server, user_data,
+ backup_router, TRUE);
+
+ /* If we are router and just lost our primary router (now standlaone)
+ we remove everything that was behind it, since we don't know
+ any better. */
+ if (server->server_type == SILC_ROUTER && server->standalone)
+ /* Remove all servers that are originated from this server, and
+ remove the clients of those servers too. */
+ silc_server_remove_servers_by_server(server, user_data, TRUE);
+
+ /* Finally remove the clients that are explicitly owned by this
+ server. They go down with the server. */
+ silc_server_remove_clients_by_server(server, user_data,
+ user_data, TRUE);
+
+ /* Update our server cache to use the new backup router too. */
silc_server_update_servers_by_server(server, user_data, backup_router);
if (server->server_type == SILC_SERVER)
- silc_server_update_channels_by_server(server, user_data,
+ silc_server_update_channels_by_server(server, user_data,
backup_router);
+
+ /* Send notify about primary router going down to local operators */
+ if (server->backup_router)
+ SILC_SERVER_SEND_OPERS(server, FALSE, TRUE,
+ SILC_NOTIFY_TYPE_NONE,
+ ("%s switched to backup router %s "
+ "(we are primary router now)",
+ server->server_name, server->server_name));
+ else if (server->router)
+ SILC_SERVER_SEND_OPERS(server, FALSE, TRUE,
+ SILC_NOTIFY_TYPE_NONE,
+ ("%s switched to backup router %s",
+ server->server_name,
+ server->router->server_name));
+ }
+ server->backup_noswitch = FALSE;
+
+ if (idata->sconn) {
+ silc_server_connection_free(idata->sconn);
+ idata->sconn = NULL;
+ }
+
+ /* Statistics */
+ if (idata->conn_type == SILC_CONN_SERVER) {
+ server->stat.my_servers--;
+ server->stat.servers--;
+ SILC_LOG_DEBUG(("my_servers %d", server->stat.my_servers));
+ } else if (idata->conn_type == SILC_CONN_ROUTER) {
+ server->stat.my_routers--;
+ server->stat.routers--;
+ SILC_LOG_DEBUG(("my_routers %d", server->stat.my_routers));
}
+ if (server->server_type == SILC_ROUTER)
+ server->stat.cell_servers--;
/* Free the server entry */
silc_server_backup_del(server, user_data);
silc_idlist_del_data(user_data);
if (!silc_idlist_del_server(server->local_list, user_data))
silc_idlist_del_server(server->global_list, user_data);
- server->stat.my_servers--;
- server->stat.servers--;
- if (server->server_type == SILC_ROUTER)
- server->stat.cell_servers--;
- if (backup_router) {
+ if (backup_router && backup_router != server->id_entry) {
/* Announce all of our stuff that was created about 5 minutes ago.
The backup router knows all the other stuff already. */
if (server->server_type == SILC_ROUTER)
silc_server_announce_channels(server, time(0) - 300,
backup_router->connection);
}
+
+ silc_packet_set_context(sock, NULL);
break;
}
+
default:
{
- SilcUnknownEntry user_data = (SilcUnknownEntry)sock->user_data;
+ SilcUnknownEntry entry = (SilcUnknownEntry)idata;
- silc_idlist_del_data(user_data);
- silc_free(user_data);
+ SILC_LOG_DEBUG(("Freeing unknown connection data %p", entry));
+
+ if (idata->sconn) {
+ if (server->router_conn == idata->sconn) {
+ if (!server->no_reconnect)
+ silc_server_create_connections(server);
+ server->router_conn = NULL;
+ }
+
+ silc_server_connection_free(idata->sconn);
+ idata->sconn = NULL;
+ }
+ silc_idlist_del_data(idata);
+ silc_free(entry);
+ silc_packet_set_context(sock, NULL);
break;
}
}
-
- /* If any protocol is active cancel its execution */
- if (sock->protocol) {
- silc_protocol_cancel(sock->protocol, server->schedule);
- sock->protocol->state = SILC_PROTOCOL_STATE_ERROR;
- silc_protocol_execute_final(sock->protocol, server->schedule);
- sock->protocol = NULL;
- }
-
- sock->user_data = NULL;
}
/* Removes client from all channels it has joined. This is used when client
connection is disconnected. If the client on a channel is last, the
channel is removed as well. This sends the SIGNOFF notify types. */
-void silc_server_remove_from_channels(SilcServer server,
- SilcSocketConnection sock,
+void silc_server_remove_from_channels(SilcServer server,
+ SilcPacketStream sock,
SilcClientEntry client,
- int notify,
- char *signoff_message,
- int keygen)
+ SilcBool notify,
+ const char *signoff_message,
+ SilcBool keygen,
+ SilcBool killed)
{
SilcChannelEntry channel;
SilcChannelClientEntry chl;
SilcHashTableList htl;
- SilcBuffer clidp;
-
- SILC_LOG_DEBUG(("Start"));
+ SilcBuffer clidp = NULL;
- if (!client || !client->id)
+ if (!client)
return;
- clidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
+ if (notify && !client->id)
+ notify = FALSE;
+
+ SILC_LOG_DEBUG(("Removing client %s from joined channels",
+ notify ? silc_id_render(client->id, SILC_ID_CLIENT) : ""));
+
+ if (notify) {
+ clidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
+ if (!clidp)
+ notify = FALSE;
+ }
/* 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 */
- 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 (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_server_channel_delete(server, channel);
continue;
}
- /* Remove client from channel's client list */
- silc_hash_table_del(channel->user_list, chl->client);
+ silc_hash_table_del(client->channels, channel);
+ silc_hash_table_del(channel->user_list, 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. */
- if (server->server_type != SILC_ROUTER && channel->global_users &&
+ if (server->server_type == SILC_SERVER && channel->global_users &&
chl->client->router && !silc_server_channel_has_global(channel))
channel->global_users = FALSE;
+ memset(chl, 'A', sizeof(*chl));
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)) {
/* Notify about leaving client if this channel has global users. */
if (notify && channel->global_users)
- silc_server_send_notify_to_channel(server, NULL, channel, FALSE,
- SILC_NOTIFY_TYPE_SIGNOFF,
+ silc_server_send_notify_to_channel(server, NULL, channel, FALSE, TRUE,
+ SILC_NOTIFY_TYPE_SIGNOFF,
signoff_message ? 2 : 1,
- clidp->data, clidp->len,
+ clidp->data, silc_buffer_len(clidp),
signoff_message, signoff_message ?
strlen(signoff_message) : 0);
- 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);
- }
- 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);
+ silc_schedule_task_del_by_context(server->schedule, channel->rekey);
+ silc_server_channel_delete(server, channel);
continue;
}
- /* Send notify to channel about client leaving SILC and thus
- the entire channel. */
+ /* Send notify to channel about client leaving SILC and channel too */
if (notify)
- silc_server_send_notify_to_channel(server, NULL, channel, FALSE,
- SILC_NOTIFY_TYPE_SIGNOFF,
+ silc_server_send_notify_to_channel(server, NULL, channel, FALSE, TRUE,
+ SILC_NOTIFY_TYPE_SIGNOFF,
signoff_message ? 2 : 1,
- clidp->data, clidp->len,
+ clidp->data, silc_buffer_len(clidp),
signoff_message, signoff_message ?
strlen(signoff_message) : 0);
+ if (killed && clidp) {
+ /* Remove the client from channel's invite list */
+ if (channel->invite_list &&
+ silc_hash_table_count(channel->invite_list)) {
+ SilcBuffer ab;
+ SilcArgumentPayload iargs;
+ ab = silc_argument_payload_encode_one(NULL, clidp->data,
+ silc_buffer_len(clidp), 3);
+ iargs = silc_argument_payload_parse(ab->data, silc_buffer_len(ab), 1);
+ silc_server_inviteban_process(server, channel->invite_list, 1, iargs);
+ silc_buffer_free(ab);
+ silc_argument_payload_free(iargs);
+ }
+ }
+
+ /* Don't create keys if we are shutting down */
+ if (server->server_shutdown)
+ continue;
+
+ /* Re-generate channel key if needed */
if (keygen && !(channel->mode & SILC_CHANNEL_MODE_PRIVKEY)) {
- /* Re-generate channel key */
if (!silc_server_create_channel_key(server, channel, 0))
- return;
-
+ continue;
+
/* Send the channel key to the channel. The key of course is not sent
to the client who was removed from the channel. */
- silc_server_send_channel_key(server, client->connection, channel,
- server->server_type == SILC_ROUTER ?
+ silc_server_send_channel_key(server, client->connection, channel,
+ server->server_type == SILC_ROUTER ?
FALSE : !server->standalone);
}
}
- silc_buffer_free(clidp);
+ silc_hash_table_list_reset(&htl);
+ if (clidp)
+ silc_buffer_free(clidp);
}
/* Removes client from one channel. This is used for example when client
last client leaves the channel. If `notify' is FALSE notify messages
are not sent. */
-int silc_server_remove_from_one_channel(SilcServer server,
- SilcSocketConnection sock,
- SilcChannelEntry channel,
- SilcClientEntry client,
- int notify)
+SilcBool silc_server_remove_from_one_channel(SilcServer server,
+ SilcPacketStream sock,
+ SilcChannelEntry channel,
+ SilcClientEntry client,
+ SilcBool notify)
{
SilcChannelClientEntry chl;
SilcBuffer clidp;
- SILC_LOG_DEBUG(("Start"));
+ SILC_LOG_DEBUG(("Removing %s from channel %s",
+ silc_id_render(client->id, SILC_ID_CLIENT),
+ channel->channel_name));
/* Get the entry to the channel, if this client is not on the channel
then return Ok. */
if (!silc_hash_table_find(client->channels, channel, NULL, (void *)&chl))
return TRUE;
- /* Remove the client from the channel. The client is removed from
- the channel's user list. */
-
- clidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
-
- /* Remove channel from client's channel list */
- silc_hash_table_del(client->channels, chl->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 (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_buffer_free(clidp);
+ silc_server_channel_delete(server, channel);
return FALSE;
}
- /* Remove client from channel's client list */
- silc_hash_table_del(channel->user_list, chl->client);
-
+ silc_hash_table_del(client->channels, channel);
+ silc_hash_table_del(channel->user_list, 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 client is local client. */
- if (server->server_type != SILC_ROUTER && channel->global_users &&
+ if (server->server_type == SILC_SERVER && channel->global_users &&
chl->client->router && !silc_server_channel_has_global(channel))
channel->global_users = FALSE;
+ memset(chl, 'O', sizeof(*chl));
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--;
+ }
+
+ clidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
+ if (!clidp)
+ notify = FALSE;
/* 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)) {
- /* Notify about leaving client if this channel has global users. */
- if (notify && channel->global_users)
- silc_server_send_notify_to_channel(server, NULL, channel, FALSE,
- SILC_NOTIFY_TYPE_LEAVE, 1,
- clidp->data, clidp->len);
-
- silc_buffer_free(clidp);
-
- 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);
- }
- return FALSE;
- }
+ /* Notify about leaving client if this channel has global users. */
+ if (notify && channel->global_users)
+ silc_server_send_notify_to_channel(server, NULL, channel, FALSE, TRUE,
+ SILC_NOTIFY_TYPE_LEAVE, 1,
+ clidp->data, silc_buffer_len(clidp));
- /* 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);
+ silc_schedule_task_del_by_context(server->schedule, channel->rekey);
+ silc_server_channel_delete(server, channel);
+ silc_buffer_free(clidp);
return FALSE;
}
/* Send notify to channel about client leaving the channel */
if (notify)
- silc_server_send_notify_to_channel(server, NULL, channel, FALSE,
+ silc_server_send_notify_to_channel(server, NULL, channel, FALSE, TRUE,
SILC_NOTIFY_TYPE_LEAVE, 1,
- clidp->data, clidp->len);
+ clidp->data, silc_buffer_len(clidp));
silc_buffer_free(clidp);
return TRUE;
}
-/* Timeout callback. This is called if connection is idle or for some
- other reason is not responding within some period of time. This
- disconnects the remote end. */
-
-SILC_TASK_CALLBACK(silc_server_timeout_remote)
-{
- SilcServer server = (SilcServer)context;
- SilcSocketConnection sock = server->sockets[fd];
-
- SILC_LOG_DEBUG(("Start"));
-
- if (!sock)
- return;
-
- /* If we have protocol active we must assure that we call the protocol's
- final callback so that all the memory is freed. */
- if (sock->protocol) {
- sock->protocol->state = SILC_PROTOCOL_STATE_ERROR;
- silc_protocol_execute_final(sock->protocol, server->schedule);
- return;
- }
-
- if (sock->user_data)
- silc_server_free_sock_user_data(server, sock);
-
- silc_server_disconnect_remote(server, sock, "Server closed connection: "
- "Connection timeout");
-}
-
/* Creates new channel. Sends NEW_CHANNEL packet to primary route. This
function may be used only by router. In real SILC network all channels
are created by routers thus this function is never used by normal
server. */
-SilcChannelEntry silc_server_create_new_channel(SilcServer server,
+SilcChannelEntry silc_server_create_new_channel(SilcServer server,
SilcServerID *router_id,
- char *cipher,
+ char *cipher,
char *hmac,
char *channel_name,
int broadcast)
{
SilcChannelID *channel_id;
SilcChannelEntry entry;
- SilcCipher key;
+ SilcCipher send_key, receive_key;
SilcHmac newhmac;
- SILC_LOG_DEBUG(("Creating new channel"));
+ SILC_LOG_DEBUG(("Creating new channel %s", channel_name));
if (!cipher)
cipher = SILC_DEFAULT_CIPHER;
hmac = SILC_DEFAULT_HMAC;
/* Allocate cipher */
- if (!silc_cipher_alloc(cipher, &key))
+ if (!silc_cipher_alloc(cipher, &send_key))
+ return NULL;
+ if (!silc_cipher_alloc(cipher, &receive_key)) {
+ silc_cipher_free(send_key);
return NULL;
+ }
/* Allocate hmac */
if (!silc_hmac_alloc(hmac, NULL, &newhmac)) {
- silc_cipher_free(key);
+ silc_cipher_free(send_key);
+ silc_cipher_free(receive_key);
return NULL;
}
channel_name = strdup(channel_name);
- /* Create the channel */
- if (!silc_id_create_channel_id(server, router_id, server->rng,
+ /* Create the channel ID */
+ if (!silc_id_create_channel_id(server, router_id, server->rng,
&channel_id)) {
silc_free(channel_name);
- silc_cipher_free(key);
+ silc_cipher_free(send_key);
+ silc_cipher_free(receive_key);
silc_hmac_free(newhmac);
return NULL;
}
- entry = silc_idlist_add_channel(server->local_list, channel_name,
- SILC_CHANNEL_MODE_NONE, channel_id,
- NULL, key, newhmac, 0);
+
+ /* Create the channel */
+ entry = silc_idlist_add_channel(server->local_list, channel_name,
+ SILC_CHANNEL_MODE_NONE, channel_id,
+ NULL, send_key, receive_key, newhmac);
if (!entry) {
silc_free(channel_name);
- silc_cipher_free(key);
+ silc_cipher_free(send_key);
+ silc_cipher_free(receive_key);
silc_hmac_free(newhmac);
+ silc_free(channel_id);
return NULL;
}
entry->hmac_name = strdup(hmac);
/* Now create the actual key material */
- if (!silc_server_create_channel_key(server, entry,
- silc_cipher_get_key_len(key) / 8)) {
- silc_free(channel_name);
- silc_cipher_free(key);
- silc_hmac_free(newhmac);
- silc_free(entry->cipher);
- silc_free(entry->hmac_name);
+ if (!silc_server_create_channel_key(server, entry,
+ silc_cipher_get_key_len(send_key) / 8)) {
+ silc_idlist_del_channel(server->local_list, entry);
return NULL;
}
/* Notify other routers about the new channel. We send the packet
to our primary route. */
- if (broadcast && server->standalone == FALSE)
- silc_server_send_new_channel(server, server->router->connection, TRUE,
- channel_name, entry->id,
+ if (broadcast)
+ silc_server_send_new_channel(server, SILC_PRIMARY_ROUTE(server), TRUE,
+ channel_name, entry->id,
silc_id_get_len(entry->id, SILC_ID_CHANNEL),
entry->mode);
+ /* Distribute to backup routers */
+ if (broadcast && server->server_type == SILC_ROUTER) {
+ SilcBuffer packet;
+ unsigned char cid[32];
+ SilcUInt32 name_len = strlen(channel_name);
+ SilcUInt32 id_len;
+
+ silc_id_id2str(entry->id, SILC_ID_CHANNEL, cid, sizeof(cid), &id_len);
+ packet = silc_channel_payload_encode(channel_name, name_len,
+ cid, id_len, entry->mode);
+ silc_server_backup_send(server, NULL, SILC_PACKET_NEW_CHANNEL, 0,
+ packet->data, silc_buffer_len(packet), FALSE,
+ TRUE);
+ silc_buffer_free(packet);
+ }
+
server->stat.my_channels++;
+ if (server->server_type == SILC_ROUTER) {
+ server->stat.channels++;
+ server->stat.cell_channels++;
+ entry->users_resolved = TRUE;
+ }
return entry;
}
/* Same as above but creates the channel with Channel ID `channel_id. */
-SilcChannelEntry
-silc_server_create_new_channel_with_id(SilcServer server,
- char *cipher,
+SilcChannelEntry
+silc_server_create_new_channel_with_id(SilcServer server,
+ char *cipher,
char *hmac,
char *channel_name,
SilcChannelID *channel_id,
int broadcast)
{
SilcChannelEntry entry;
- SilcCipher key;
+ SilcCipher send_key, receive_key;
SilcHmac newhmac;
- SILC_LOG_DEBUG(("Creating new channel"));
+ SILC_LOG_DEBUG(("Creating new channel %s", channel_name));
if (!cipher)
cipher = SILC_DEFAULT_CIPHER;
hmac = SILC_DEFAULT_HMAC;
/* Allocate cipher */
- if (!silc_cipher_alloc(cipher, &key))
+ if (!silc_cipher_alloc(cipher, &send_key))
return NULL;
+ if (!silc_cipher_alloc(cipher, &receive_key)) {
+ silc_cipher_free(send_key);
+ return NULL;
+ }
/* Allocate hmac */
if (!silc_hmac_alloc(hmac, NULL, &newhmac)) {
- silc_cipher_free(key);
+ silc_cipher_free(send_key);
+ silc_cipher_free(receive_key);
return NULL;
}
channel_name = strdup(channel_name);
/* Create the channel */
- entry = silc_idlist_add_channel(server->local_list, channel_name,
- SILC_CHANNEL_MODE_NONE, channel_id,
- NULL, key, newhmac, 0);
+ entry = silc_idlist_add_channel(server->local_list, channel_name,
+ SILC_CHANNEL_MODE_NONE, channel_id,
+ NULL, send_key, receive_key, newhmac);
if (!entry) {
+ silc_cipher_free(send_key);
+ silc_cipher_free(receive_key);
+ silc_hmac_free(newhmac);
silc_free(channel_name);
return NULL;
}
/* Now create the actual key material */
- if (!silc_server_create_channel_key(server, entry,
- silc_cipher_get_key_len(key) / 8)) {
- silc_free(channel_name);
+ if (!silc_server_create_channel_key(server, entry,
+ silc_cipher_get_key_len(send_key) / 8)) {
+ silc_idlist_del_channel(server->local_list, entry);
return NULL;
}
/* Notify other routers about the new channel. We send the packet
to our primary route. */
- if (broadcast && server->standalone == FALSE)
- silc_server_send_new_channel(server, server->router->connection, TRUE,
- channel_name, entry->id,
+ if (broadcast)
+ silc_server_send_new_channel(server, SILC_PRIMARY_ROUTE(server), TRUE,
+ channel_name, entry->id,
silc_id_get_len(entry->id, SILC_ID_CHANNEL),
entry->mode);
+ /* Distribute to backup routers */
+ if (broadcast && server->server_type == SILC_ROUTER) {
+ SilcBuffer packet;
+ unsigned char cid[32];
+ SilcUInt32 name_len = strlen(channel_name);
+ SilcUInt32 id_len;
+
+ silc_id_id2str(entry->id, SILC_ID_CHANNEL, cid, sizeof(cid), &id_len);
+ packet = silc_channel_payload_encode(channel_name, name_len,
+ cid, id_len, entry->mode);
+ silc_server_backup_send(server, NULL, SILC_PACKET_NEW_CHANNEL, 0,
+ packet->data, silc_buffer_len(packet), FALSE,
+ TRUE);
+ silc_buffer_free(packet);
+ }
+
server->stat.my_channels++;
+ if (server->server_type == SILC_ROUTER) {
+ server->stat.channels++;
+ server->stat.cell_channels++;
+ entry->users_resolved = TRUE;
+ }
return entry;
}
SILC_TASK_CALLBACK(silc_server_channel_key_rekey)
{
+ SilcServer server = app_context;
SilcServerChannelRekey rekey = (SilcServerChannelRekey)context;
- SilcServer server = (SilcServer)rekey->context;
rekey->task = NULL;
+ /* Return now if we are shutting down */
+ if (server->server_shutdown)
+ return;
+
if (!silc_server_create_channel_key(server, rekey->channel, rekey->key_len))
return;
but also to re-generate new key for channel. If `key_len' is provided
it is the bytes of the key length. */
-bool silc_server_create_channel_key(SilcServer server,
- SilcChannelEntry channel,
- uint32 key_len)
+SilcBool silc_server_create_channel_key(SilcServer server,
+ SilcChannelEntry channel,
+ SilcUInt32 key_len)
{
int i;
- unsigned char channel_key[32], hash[32];
- uint32 len;
-
- SILC_LOG_DEBUG(("Generating channel key"));
+ unsigned char channel_key[32], hash[SILC_HASH_MAXLEN];
+ SilcUInt32 len;
if (channel->mode & SILC_CHANNEL_MODE_PRIVKEY) {
SILC_LOG_DEBUG(("Channel has private keys, will not generate new key"));
return TRUE;
}
- if (!channel->channel_key)
- if (!silc_cipher_alloc(SILC_DEFAULT_CIPHER, &channel->channel_key)) {
- channel->channel_key = NULL;
+ SILC_LOG_DEBUG(("Generating channel %s key", channel->channel_name));
+
+ if (!channel->send_key)
+ if (!silc_cipher_alloc(SILC_DEFAULT_CIPHER, &channel->send_key)) {
+ channel->send_key = NULL;
+ return FALSE;
+ }
+ if (!channel->receive_key)
+ if (!silc_cipher_alloc(SILC_DEFAULT_CIPHER, &channel->receive_key)) {
+ silc_cipher_free(channel->send_key);
+ channel->send_key = channel->receive_key = NULL;
return FALSE;
}
else if (channel->key_len)
len = channel->key_len / 8;
else
- len = silc_cipher_get_key_len(channel->channel_key) / 8;
+ len = silc_cipher_get_key_len(channel->send_key) / 8;
/* Create channel key */
for (i = 0; i < len; i++) channel_key[i] = silc_rng_get_byte(server->rng);
-
+
/* Set the key */
- silc_cipher_set_key(channel->channel_key, channel_key, len * 8);
+ silc_cipher_set_key(channel->send_key, channel_key, len * 8, TRUE);
+ silc_cipher_set_key(channel->receive_key, channel_key, len * 8, FALSE);
/* Remove old key if exists */
if (channel->key) {
/* Save the key */
channel->key_len = len * 8;
- channel->key = silc_calloc(len, sizeof(*channel->key));
- memcpy(channel->key, channel_key, len);
+ channel->key = silc_memdup(channel_key, len);
memset(channel_key, 0, sizeof(channel_key));
/* Generate HMAC key from the channel key data and set it */
if (!channel->hmac)
- silc_hmac_alloc(SILC_DEFAULT_HMAC, NULL, &channel->hmac);
+ if (!silc_hmac_alloc(SILC_DEFAULT_HMAC, NULL, &channel->hmac)) {
+ memset(channel->key, 0, channel->key_len / 8);
+ silc_free(channel->key);
+ silc_cipher_free(channel->send_key);
+ silc_cipher_free(channel->receive_key);
+ channel->send_key = channel->receive_key = NULL;
+ return FALSE;
+ }
silc_hash_make(silc_hmac_get_hash(channel->hmac), channel->key, len, hash);
- silc_hmac_set_key(channel->hmac, hash,
+ silc_hmac_set_key(channel->hmac, hash,
silc_hash_len(silc_hmac_get_hash(channel->hmac)));
memset(hash, 0, sizeof(hash));
if (server->server_type == SILC_ROUTER) {
if (!channel->rekey)
channel->rekey = silc_calloc(1, sizeof(*channel->rekey));
- channel->rekey->context = (void *)server;
channel->rekey->channel = channel;
channel->rekey->key_len = key_len;
if (channel->rekey->task)
silc_schedule_task_del(server->schedule, channel->rekey->task);
- channel->rekey->task =
- silc_schedule_task_add(server->schedule, 0,
- silc_server_channel_key_rekey,
- (void *)channel->rekey, 3600, 0,
- SILC_TASK_TIMEOUT,
- SILC_TASK_PRI_NORMAL);
+ channel->rekey->task =
+ silc_schedule_task_add_timeout(server->schedule,
+ silc_server_channel_key_rekey,
+ (void *)channel->rekey,
+ server->config->channel_rekey_secs, 0);
}
return TRUE;
}
-/* Saves the channel key found in the encoded `key_payload' buffer. This
+/* Saves the channel key found in the encoded `key_payload' buffer. This
function is used when we receive Channel Key Payload and also when we're
processing JOIN command reply. Returns entry to the channel. */
SilcChannelEntry channel)
{
SilcChannelKeyPayload payload = NULL;
- SilcChannelID *id = NULL;
- unsigned char *tmp, hash[32];
- uint32 tmp_len;
+ SilcChannelID id;
+ unsigned char *tmp, hash[SILC_HASH_MAXLEN];
+ SilcUInt32 tmp_len;
char *cipher;
- SILC_LOG_DEBUG(("Start"));
-
/* Decode channel key payload */
payload = silc_channel_key_payload_parse(key_payload->data,
- key_payload->len);
+ silc_buffer_len(key_payload));
if (!payload) {
- SILC_LOG_ERROR(("Bad channel key payload, dropped"));
+ SILC_LOG_ERROR(("Bad channel key payload received, dropped"));
channel = NULL;
goto out;
}
/* Get channel ID */
tmp = silc_channel_key_get_id(payload, &tmp_len);
- id = silc_id_str2id(tmp, tmp_len, SILC_ID_CHANNEL);
- if (!id) {
+ if (!silc_id_str2id(tmp, tmp_len, SILC_ID_CHANNEL, &id, sizeof(id))) {
channel = NULL;
goto out;
}
- channel = silc_idlist_find_channel_by_id(server->local_list, id, NULL);
+ channel = silc_idlist_find_channel_by_id(server->local_list, &id, NULL);
if (!channel) {
- channel = silc_idlist_find_channel_by_id(server->global_list, id, NULL);
+ channel = silc_idlist_find_channel_by_id(server->global_list, &id, NULL);
if (!channel) {
- SILC_LOG_ERROR(("Received key for non-existent channel"));
+ if (server->server_type == SILC_ROUTER)
+ SILC_LOG_ERROR(("Received key for non-existent channel %s",
+ silc_id_render(&id, SILC_ID_CHANNEL)));
goto out;
}
}
}
+ SILC_LOG_DEBUG(("Saving new channel %s key", channel->channel_name));
+
tmp = silc_channel_key_get_key(payload, &tmp_len);
if (!tmp) {
channel = NULL;
if (channel->key) {
memset(channel->key, 0, channel->key_len / 8);
silc_free(channel->key);
- silc_cipher_free(channel->channel_key);
+ silc_cipher_free(channel->send_key);
+ silc_cipher_free(channel->receive_key);
}
/* Create new cipher */
- if (!silc_cipher_alloc(cipher, &channel->channel_key)) {
- channel->channel_key = NULL;
+ if (!silc_cipher_alloc(cipher, &channel->send_key)) {
+ channel->send_key = NULL;
+ channel = NULL;
+ goto out;
+ }
+ if (!silc_cipher_alloc(cipher, &channel->receive_key)) {
+ silc_cipher_free(channel->send_key);
+ channel->send_key = channel->receive_key = NULL;
channel = NULL;
goto out;
}
/* Save the key */
channel->key_len = tmp_len * 8;
- channel->key = silc_calloc(tmp_len, sizeof(unsigned char));
- memcpy(channel->key, tmp, tmp_len);
- silc_cipher_set_key(channel->channel_key, tmp, channel->key_len);
+ channel->key = silc_memdup(tmp, tmp_len);
+ silc_cipher_set_key(channel->send_key, tmp, channel->key_len, TRUE);
+ silc_cipher_set_key(channel->receive_key, tmp, channel->key_len, FALSE);
/* Generate HMAC key from the channel key data and set it */
if (!channel->hmac)
- silc_hmac_alloc(SILC_DEFAULT_HMAC, NULL, &channel->hmac);
+ if (!silc_hmac_alloc(SILC_DEFAULT_HMAC, NULL, &channel->hmac)) {
+ memset(channel->key, 0, channel->key_len / 8);
+ silc_free(channel->key);
+ silc_cipher_free(channel->send_key);
+ silc_cipher_free(channel->receive_key);
+ channel->send_key = channel->receive_key = NULL;
+ return FALSE;
+ }
silc_hash_make(silc_hmac_get_hash(channel->hmac), tmp, tmp_len, hash);
- silc_hmac_set_key(channel->hmac, hash,
+ silc_hmac_set_key(channel->hmac, hash,
silc_hash_len(silc_hmac_get_hash(channel->hmac)));
memset(hash, 0, sizeof(hash));
if (server->server_type == SILC_ROUTER) {
if (!channel->rekey)
channel->rekey = silc_calloc(1, sizeof(*channel->rekey));
- channel->rekey->context = (void *)server;
channel->rekey->channel = channel;
if (channel->rekey->task)
silc_schedule_task_del(server->schedule, channel->rekey->task);
- channel->rekey->task =
- silc_schedule_task_add(server->schedule, 0,
- silc_server_channel_key_rekey,
- (void *)channel->rekey, 3600, 0,
- SILC_TASK_TIMEOUT,
- SILC_TASK_PRI_NORMAL);
+ channel->rekey->task =
+ silc_schedule_task_add_timeout(server->schedule,
+ silc_server_channel_key_rekey,
+ (void *)channel->rekey,
+ server->config->channel_rekey_secs, 0);
}
out:
- silc_free(id);
if (payload)
silc_channel_key_payload_free(payload);
return channel;
}
-/* Heartbeat callback. This function is set as argument for the
- silc_socket_set_heartbeat function. The library will call this function
- at the set time interval. */
-
-void silc_server_perform_heartbeat(SilcSocketConnection sock,
- void *hb_context)
-{
- SilcServerHBContext hb = (SilcServerHBContext)hb_context;
-
- SILC_LOG_DEBUG(("Sending heartbeat to %s (%s)", sock->hostname,
- sock->ip));
-
- /* Send the heartbeat */
- silc_server_send_heartbeat(hb->server, sock);
-}
-
/* Returns assembled of all servers in the given ID list. The packet's
form is dictated by the New ID payload. */
SilcBuffer *servers,
unsigned long creation_time)
{
- SilcIDCacheList list;
+ SilcList list;
SilcIDCacheEntry id_cache;
SilcServerEntry entry;
SilcBuffer idp;
+ void *tmp;
/* Go through all clients in the list */
if (silc_idcache_get_all(id_list->servers, &list)) {
- if (silc_idcache_list_first(list, &id_cache)) {
- while (id_cache) {
- entry = (SilcServerEntry)id_cache->context;
-
- /* Do not announce the one we've sending our announcements and
- do not announce ourself. Also check the creation time if it's
- provided. */
- if ((entry == remote) || (entry == server->id_entry) ||
- (creation_time && entry->data.created < creation_time)) {
- if (!silc_idcache_list_next(list, &id_cache))
- break;
- continue;
- }
-
- idp = silc_id_payload_encode(entry->id, SILC_ID_SERVER);
+ silc_list_start(list);
+ while ((id_cache = silc_list_get(list))) {
+ entry = (SilcServerEntry)id_cache->context;
+
+ /* Do not announce the one we've sending our announcements and
+ do not announce ourself. Also check the creation time if it's
+ provided. */
+ if ((entry == remote) || (entry == server->id_entry) ||
+ (creation_time && entry->data.created < creation_time))
+ continue;
- *servers = silc_buffer_realloc(*servers,
- (*servers ?
- (*servers)->truelen + idp->len :
- idp->len));
- silc_buffer_pull_tail(*servers, ((*servers)->end - (*servers)->data));
- silc_buffer_put(*servers, idp->data, idp->len);
- silc_buffer_pull(*servers, idp->len);
- silc_buffer_free(idp);
+ idp = silc_id_payload_encode(entry->id, SILC_ID_SERVER);
- if (!silc_idcache_list_next(list, &id_cache))
- break;
- }
+ tmp = silc_buffer_realloc(*servers,
+ (*servers ?
+ silc_buffer_truelen((*servers)) +
+ silc_buffer_len(idp) :
+ silc_buffer_len(idp)));
+ if (!tmp)
+ return;
+ *servers = tmp;
+ silc_buffer_pull_tail(*servers, ((*servers)->end - (*servers)->data));
+ silc_buffer_put(*servers, idp->data, silc_buffer_len(idp));
+ silc_buffer_pull(*servers, silc_buffer_len(idp));
+ silc_buffer_free(idp);
}
-
- silc_idcache_list_free(list);
}
}
-static SilcBuffer
-silc_server_announce_encode_notify(SilcNotifyType notify, uint32 argc, ...)
+static SilcBuffer
+silc_server_announce_encode_notify(SilcNotifyType notify, SilcUInt32 argc, ...)
{
va_list ap;
SilcBuffer p;
va_start(ap, argc);
p = silc_notify_payload_encode(notify, argc, ap);
va_end(ap);
-
+
return p;
}
then only the servers that has been created after the `creation_time'
will be announced. */
-void silc_server_announce_servers(SilcServer server, bool global,
+void silc_server_announce_servers(SilcServer server, SilcBool global,
unsigned long creation_time,
- SilcSocketConnection remote)
+ SilcPacketStream remote)
{
SilcBuffer servers = NULL;
SILC_LOG_DEBUG(("Announcing servers"));
/* Get servers in local list */
- silc_server_announce_get_servers(server, remote->user_data,
+ silc_server_announce_get_servers(server, silc_packet_get_context(remote),
server->local_list, &servers,
creation_time);
if (global)
/* Get servers in global list */
- silc_server_announce_get_servers(server, remote->user_data,
+ silc_server_announce_get_servers(server, silc_packet_get_context(remote),
server->global_list, &servers,
creation_time);
if (servers) {
silc_buffer_push(servers, servers->data - servers->head);
- SILC_LOG_HEXDUMP(("servers"), servers->data, servers->len);
+ SILC_LOG_HEXDUMP(("servers"), servers->data, silc_buffer_len(servers));
/* Send the packet */
silc_server_packet_send(server, remote,
SILC_PACKET_NEW_ID, SILC_PACKET_FLAG_LIST,
- servers->data, servers->len, TRUE);
+ servers->data, silc_buffer_len(servers));
silc_buffer_free(servers);
}
SilcBuffer *umodes,
unsigned long creation_time)
{
- SilcIDCacheList list;
+ SilcList list;
SilcIDCacheEntry id_cache;
SilcClientEntry client;
SilcBuffer idp;
SilcBuffer tmp;
unsigned char mode[4];
+ void *tmp2;
/* Go through all clients in the list */
if (silc_idcache_get_all(id_list->clients, &list)) {
- if (silc_idcache_list_first(list, &id_cache)) {
- while (id_cache) {
- client = (SilcClientEntry)id_cache->context;
+ silc_list_start(list);
+ while ((id_cache = silc_list_get(list))) {
+ client = (SilcClientEntry)id_cache->context;
- if (creation_time && client->data.created < creation_time) {
- if (!silc_idcache_list_next(list, &id_cache))
- break;
- continue;
- }
+ if (creation_time && client->data.created < creation_time)
+ continue;
+ if (!(client->data.status & SILC_IDLIST_STATUS_REGISTERED))
+ continue;
+ if (!client->connection && !client->router)
+ continue;
- idp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
-
- *clients = silc_buffer_realloc(*clients,
- (*clients ?
- (*clients)->truelen + idp->len :
- idp->len));
- silc_buffer_pull_tail(*clients, ((*clients)->end - (*clients)->data));
- silc_buffer_put(*clients, idp->data, idp->len);
- silc_buffer_pull(*clients, idp->len);
-
- SILC_PUT32_MSB(client->mode, mode);
- tmp = silc_server_announce_encode_notify(SILC_NOTIFY_TYPE_UMODE_CHANGE,
- 2, idp->data, idp->len,
- mode, 4);
- *umodes = silc_buffer_realloc(*umodes,
- (*umodes ?
- (*umodes)->truelen + tmp->len :
- tmp->len));
- silc_buffer_pull_tail(*umodes, ((*umodes)->end - (*umodes)->data));
- silc_buffer_put(*umodes, tmp->data, tmp->len);
- silc_buffer_pull(*umodes, tmp->len);
- silc_buffer_free(tmp);
-
- silc_buffer_free(idp);
-
- if (!silc_idcache_list_next(list, &id_cache))
- break;
- }
- }
+ SILC_LOG_DEBUG(("Announce Client ID %s",
+ silc_id_render(client->id, SILC_ID_CLIENT)));
+
+ idp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
+ if (!idp)
+ return;
+
+ tmp2 = silc_buffer_realloc(*clients,
+ (*clients ?
+ silc_buffer_truelen((*clients)) +
+ silc_buffer_len(idp) :
+ silc_buffer_len(idp)));
+ if (!tmp2)
+ return;
+ *clients = tmp2;
+ silc_buffer_pull_tail(*clients, ((*clients)->end - (*clients)->data));
+ silc_buffer_put(*clients, idp->data, silc_buffer_len(idp));
+ silc_buffer_pull(*clients, silc_buffer_len(idp));
+
+ SILC_PUT32_MSB(client->mode, mode);
+ tmp =
+ silc_server_announce_encode_notify(SILC_NOTIFY_TYPE_UMODE_CHANGE,
+ 2, idp->data, silc_buffer_len(idp),
+ mode, 4);
+ tmp2 = silc_buffer_realloc(*umodes,
+ (*umodes ?
+ silc_buffer_truelen((*umodes)) +
+ silc_buffer_len(tmp) :
+ silc_buffer_len(tmp)));
+ if (!tmp2)
+ return;
+ *umodes = tmp2;
+ silc_buffer_pull_tail(*umodes, ((*umodes)->end - (*umodes)->data));
+ silc_buffer_put(*umodes, tmp->data, silc_buffer_len(tmp));
+ silc_buffer_pull(*umodes, silc_buffer_len(tmp));
+ silc_buffer_free(tmp);
- silc_idcache_list_free(list);
+ silc_buffer_free(idp);
+ }
}
}
void silc_server_announce_clients(SilcServer server,
unsigned long creation_time,
- SilcSocketConnection remote)
+ SilcPacketStream remote)
{
SilcBuffer clients = NULL;
SilcBuffer umodes = NULL;
if (clients) {
silc_buffer_push(clients, clients->data - clients->head);
- SILC_LOG_HEXDUMP(("clients"), clients->data, clients->len);
+ SILC_LOG_HEXDUMP(("clients"), clients->data, silc_buffer_len(clients));
/* Send the packet */
silc_server_packet_send(server, remote,
SILC_PACKET_NEW_ID, SILC_PACKET_FLAG_LIST,
- clients->data, clients->len, TRUE);
+ clients->data, silc_buffer_len(clients));
silc_buffer_free(clients);
}
if (umodes) {
silc_buffer_push(umodes, umodes->data - umodes->head);
- SILC_LOG_HEXDUMP(("umodes"), umodes->data, umodes->len);
+ SILC_LOG_HEXDUMP(("umodes"), umodes->data, silc_buffer_len(umodes));
/* Send the packet */
silc_server_packet_send(server, remote,
SILC_PACKET_NOTIFY, SILC_PACKET_FLAG_LIST,
- umodes->data, umodes->len, TRUE);
+ umodes->data, silc_buffer_len(umodes));
silc_buffer_free(umodes);
}
if (channel->topic) {
chidp = silc_id_payload_encode(channel->id, SILC_ID_CHANNEL);
*topic = silc_server_announce_encode_notify(SILC_NOTIFY_TYPE_TOPIC_SET, 2,
- chidp->data, chidp->len,
- channel->topic,
+ chidp->data,
+ silc_buffer_len(chidp),
+ channel->topic,
strlen(channel->topic));
silc_buffer_free(chidp);
}
}
+/* Returns channel's invite and ban lists */
+
+void silc_server_announce_get_inviteban(SilcServer server,
+ SilcChannelEntry channel,
+ SilcBuffer *invite,
+ SilcBuffer *ban)
+{
+ SilcBuffer list, idp, idp2, tmp2;
+ SilcUInt32 type;
+ void *ptype;
+ SilcHashTableList htl;
+ const unsigned char a[1] = { 0x03 };
+
+ idp = silc_id_payload_encode((void *)channel->id, SILC_ID_CHANNEL);
+
+ /* Encode invite list */
+ if (channel->invite_list && silc_hash_table_count(channel->invite_list)) {
+ list = silc_buffer_alloc_size(2);
+ type = silc_hash_table_count(channel->invite_list);
+ SILC_PUT16_MSB(type, list->data);
+ silc_hash_table_list(channel->invite_list, &htl);
+ while (silc_hash_table_get(&htl, (void *)&ptype, (void *)&tmp2))
+ list = silc_argument_payload_encode_one(list, tmp2->data,
+ silc_buffer_len(tmp2),
+ SILC_PTR_TO_32(ptype));
+ silc_hash_table_list_reset(&htl);
+
+ idp2 = silc_id_payload_encode(server->id, SILC_ID_SERVER);
+ *invite =
+ silc_server_announce_encode_notify(SILC_NOTIFY_TYPE_INVITE, 5,
+ idp->data, silc_buffer_len(idp),
+ channel->channel_name,
+ strlen(channel->channel_name),
+ idp2->data, silc_buffer_len(idp2),
+ a, 1,
+ list->data, silc_buffer_len(list));
+ silc_buffer_free(idp2);
+ silc_buffer_free(list);
+ }
+
+ /* Encode ban list */
+ if (channel->ban_list && silc_hash_table_count(channel->ban_list)) {
+ list = silc_buffer_alloc_size(2);
+ type = silc_hash_table_count(channel->ban_list);
+ SILC_PUT16_MSB(type, list->data);
+ silc_hash_table_list(channel->ban_list, &htl);
+ while (silc_hash_table_get(&htl, (void *)&ptype, (void *)&tmp2))
+ list = silc_argument_payload_encode_one(list, tmp2->data,
+ silc_buffer_len(tmp2),
+ SILC_PTR_TO_32(ptype));
+ silc_hash_table_list_reset(&htl);
+
+ *ban =
+ silc_server_announce_encode_notify(SILC_NOTIFY_TYPE_BAN, 3,
+ idp->data, silc_buffer_len(idp),
+ a, 1,
+ list->data, silc_buffer_len(list));
+ silc_buffer_free(list);
+ }
+
+ silc_buffer_free(idp);
+}
+
/* Returns assembled packets for channel users of the `channel'. */
void silc_server_announce_get_channel_users(SilcServer server,
SilcChannelEntry channel,
+ SilcBuffer *channel_modes,
SilcBuffer *channel_users,
SilcBuffer *channel_users_modes)
{
SilcChannelClientEntry chl;
SilcHashTableList htl;
- SilcBuffer chidp, clidp;
- SilcBuffer tmp;
+ SilcBuffer chidp, clidp, csidp;
+ SilcBuffer tmp, fkey = NULL, chpklist;
int len;
- unsigned char mode[4];
+ unsigned char mode[4], ulimit[4];
+ char *hmac;
+ void *tmp2;
SILC_LOG_DEBUG(("Start"));
- /* Now find all users on the channel */
chidp = silc_id_payload_encode(channel->id, SILC_ID_CHANNEL);
+ csidp = silc_id_payload_encode(server->id, SILC_ID_SERVER);
+ chpklist = silc_server_get_channel_pk_list(server, channel, TRUE, FALSE);
+
+ /* CMODE notify */
+ SILC_PUT32_MSB(channel->mode, mode);
+ if (channel->mode & SILC_CHANNEL_MODE_ULIMIT)
+ SILC_PUT32_MSB(channel->user_limit, ulimit);
+ hmac = channel->hmac ? (char *)silc_hmac_get_name(channel->hmac) : NULL;
+ if (channel->founder_key)
+ fkey = silc_public_key_payload_encode(channel->founder_key);
+ tmp =
+ silc_server_announce_encode_notify(SILC_NOTIFY_TYPE_CMODE_CHANGE,
+ 8, csidp->data,
+ silc_buffer_len(csidp),
+ mode, sizeof(mode),
+ NULL, 0,
+ hmac, hmac ? strlen(hmac) : 0,
+ channel->passphrase,
+ channel->passphrase ?
+ strlen(channel->passphrase) : 0,
+ fkey ? fkey->data : NULL,
+ fkey ? silc_buffer_len(fkey) : 0,
+ chpklist ? chpklist->data : NULL,
+ chpklist ?
+ silc_buffer_len(chpklist) : 0,
+ (channel->mode &
+ SILC_CHANNEL_MODE_ULIMIT ?
+ ulimit : NULL),
+ (channel->mode &
+ SILC_CHANNEL_MODE_ULIMIT ?
+ sizeof(ulimit) : 0));
+ len = silc_buffer_len(tmp);
+ tmp2 =
+ silc_buffer_realloc(*channel_modes,
+ (*channel_modes ?
+ silc_buffer_truelen((*channel_modes)) + len : len));
+ if (!tmp2)
+ return;
+ *channel_modes = tmp2;
+ silc_buffer_pull_tail(*channel_modes,
+ ((*channel_modes)->end -
+ (*channel_modes)->data));
+ silc_buffer_put(*channel_modes, tmp->data, silc_buffer_len(tmp));
+ silc_buffer_pull(*channel_modes, len);
+ silc_buffer_free(tmp);
+ silc_buffer_free(fkey);
+ fkey = NULL;
+
+ /* Now find all users on the channel */
silc_hash_table_list(channel->user_list, &htl);
while (silc_hash_table_get(&htl, NULL, (void *)&chl)) {
clidp = silc_id_payload_encode(chl->client->id, SILC_ID_CLIENT);
+ SILC_LOG_DEBUG(("JOIN Client %s", silc_id_render(chl->client->id,
+ SILC_ID_CLIENT)));
+
/* JOIN Notify */
- tmp = silc_server_announce_encode_notify(SILC_NOTIFY_TYPE_JOIN, 2,
- clidp->data, clidp->len,
- chidp->data, chidp->len);
- len = tmp->len;
- *channel_users =
- silc_buffer_realloc(*channel_users,
- (*channel_users ?
- (*channel_users)->truelen + len : len));
- silc_buffer_pull_tail(*channel_users,
- ((*channel_users)->end -
+ tmp = silc_server_announce_encode_notify(SILC_NOTIFY_TYPE_JOIN, 2,
+ clidp->data,
+ silc_buffer_len(clidp),
+ chidp->data,
+ silc_buffer_len(chidp));
+ len = silc_buffer_len(tmp);
+ tmp2 =
+ silc_buffer_realloc(*channel_users,
+ (*channel_users ?
+ silc_buffer_truelen((*channel_users)) + len : len));
+ if (!tmp2)
+ return;
+ *channel_users = tmp2;
+ silc_buffer_pull_tail(*channel_users,
+ ((*channel_users)->end -
(*channel_users)->data));
-
- silc_buffer_put(*channel_users, tmp->data, tmp->len);
+
+ silc_buffer_put(*channel_users, tmp->data, silc_buffer_len(tmp));
silc_buffer_pull(*channel_users, len);
silc_buffer_free(tmp);
/* CUMODE notify for mode change on the channel */
SILC_PUT32_MSB(chl->mode, mode);
- tmp = silc_server_announce_encode_notify(SILC_NOTIFY_TYPE_CUMODE_CHANGE,
- 3, clidp->data, clidp->len,
- mode, 4,
- clidp->data, clidp->len);
- len = tmp->len;
- *channel_users_modes =
- silc_buffer_realloc(*channel_users_modes,
- (*channel_users_modes ?
- (*channel_users_modes)->truelen + len : len));
- silc_buffer_pull_tail(*channel_users_modes,
- ((*channel_users_modes)->end -
+ if (chl->mode & SILC_CHANNEL_UMODE_CHANFO && channel->founder_key)
+ fkey = silc_public_key_payload_encode(channel->founder_key);
+ tmp = silc_server_announce_encode_notify(SILC_NOTIFY_TYPE_CUMODE_CHANGE,
+ 4, csidp->data,
+ silc_buffer_len(csidp),
+ mode, sizeof(mode),
+ clidp->data,
+ silc_buffer_len(clidp),
+ fkey ? fkey->data : NULL,
+ fkey ? silc_buffer_len(fkey) : 0);
+ len = silc_buffer_len(tmp);
+ tmp2 =
+ silc_buffer_realloc(*channel_users_modes,
+ (*channel_users_modes ?
+ silc_buffer_truelen((*channel_users_modes)) +
+ len : len));
+ if (!tmp2)
+ return;
+ *channel_users_modes = tmp2;
+ silc_buffer_pull_tail(*channel_users_modes,
+ ((*channel_users_modes)->end -
(*channel_users_modes)->data));
-
- silc_buffer_put(*channel_users_modes, tmp->data, tmp->len);
+
+ silc_buffer_put(*channel_users_modes, tmp->data, silc_buffer_len(tmp));
silc_buffer_pull(*channel_users_modes, len);
silc_buffer_free(tmp);
-
+ silc_buffer_free(fkey);
+ fkey = NULL;
silc_buffer_free(clidp);
}
+ silc_hash_table_list_reset(&htl);
silc_buffer_free(chidp);
+ silc_buffer_free(csidp);
}
/* Returns assembled packets for all channels and users on those channels
void silc_server_announce_get_channels(SilcServer server,
SilcIDList id_list,
SilcBuffer *channels,
+ SilcBuffer **channel_modes,
SilcBuffer *channel_users,
SilcBuffer **channel_users_modes,
- uint32 *channel_users_modes_c,
+ SilcUInt32 *channel_users_modes_c,
SilcBuffer **channel_topics,
+ SilcBuffer **channel_invites,
+ SilcBuffer **channel_bans,
SilcChannelID ***channel_ids,
unsigned long creation_time)
{
- SilcIDCacheList list;
+ SilcList list;
SilcIDCacheEntry id_cache;
SilcChannelEntry channel;
- unsigned char *cid;
- uint32 id_len;
- uint16 name_len;
+ unsigned char cid[32];
+ SilcUInt32 id_len;
+ SilcUInt16 name_len;
int len;
int i = *channel_users_modes_c;
- bool announce;
+ void *tmp;
+ SilcBool announce;
SILC_LOG_DEBUG(("Start"));
/* Go through all channels in the list */
if (silc_idcache_get_all(id_list->channels, &list)) {
- if (silc_idcache_list_first(list, &id_cache)) {
- while (id_cache) {
- channel = (SilcChannelEntry)id_cache->context;
+ silc_list_start(list);
+ while ((id_cache = silc_list_get(list))) {
+ channel = (SilcChannelEntry)id_cache->context;
- if (creation_time && channel->created < creation_time)
- announce = FALSE;
- else
- announce = TRUE;
-
- cid = silc_id_id2str(channel->id, SILC_ID_CHANNEL);
- id_len = silc_id_get_len(channel->id, SILC_ID_CHANNEL);
- name_len = strlen(channel->channel_name);
-
- if (announce) {
- len = 4 + name_len + id_len + 4;
- *channels =
- silc_buffer_realloc(*channels,
- (*channels ? (*channels)->truelen +
- len : len));
- silc_buffer_pull_tail(*channels,
- ((*channels)->end - (*channels)->data));
- silc_buffer_format(*channels,
- SILC_STR_UI_SHORT(name_len),
- SILC_STR_UI_XNSTRING(channel->channel_name,
- name_len),
- SILC_STR_UI_SHORT(id_len),
+ if (creation_time && channel->created < creation_time)
+ announce = FALSE;
+ else
+ announce = TRUE;
+
+ SILC_LOG_DEBUG(("Announce Channel ID %s",
+ silc_id_render(channel->id, SILC_ID_CHANNEL)));
+
+ silc_id_id2str(channel->id, SILC_ID_CHANNEL, cid, sizeof(cid), &id_len);
+ name_len = strlen(channel->channel_name);
+
+ if (announce) {
+ len = 4 + name_len + id_len + 4;
+ tmp =
+ silc_buffer_realloc(*channels,
+ (*channels ?
+ silc_buffer_truelen((*channels)) +
+ len : len));
+ if (!tmp)
+ break;
+ *channels = tmp;
+
+ silc_buffer_pull_tail(*channels,
+ ((*channels)->end - (*channels)->data));
+ silc_buffer_format(*channels,
+ SILC_STR_UI_SHORT(name_len),
+ SILC_STR_UI_XNSTRING(channel->channel_name,
+ name_len),
+ SILC_STR_UI_SHORT(id_len),
SILC_STR_UI_XNSTRING(cid, id_len),
- SILC_STR_UI_INT(channel->mode),
- SILC_STR_END);
- silc_buffer_pull(*channels, len);
- }
+ SILC_STR_UI_INT(channel->mode),
+ SILC_STR_END);
+ silc_buffer_pull(*channels, len);
+ }
+
+ if (creation_time && channel->updated < creation_time)
+ announce = FALSE;
+ else
+ announce = TRUE;
+ if (announce) {
/* Channel user modes */
- *channel_users_modes = silc_realloc(*channel_users_modes,
- sizeof(**channel_users_modes) *
- (i + 1));
+ tmp = silc_realloc(*channel_users_modes,
+ sizeof(**channel_users_modes) * (i + 1));
+ if (!tmp)
+ break;
+ *channel_users_modes = tmp;
(*channel_users_modes)[i] = NULL;
- *channel_ids = silc_realloc(*channel_ids,
- sizeof(**channel_ids) * (i + 1));
+ tmp = silc_realloc(*channel_modes,
+ sizeof(**channel_modes) * (i + 1));
+ if (!tmp)
+ break;
+ *channel_modes = tmp;
+ (*channel_modes)[i] = NULL;
+ tmp = silc_realloc(*channel_ids,
+ sizeof(**channel_ids) * (i + 1));
+ if (!tmp)
+ break;
+ *channel_ids = tmp;
(*channel_ids)[i] = NULL;
silc_server_announce_get_channel_users(server, channel,
+ &(*channel_modes)[i],
channel_users,
&(*channel_users_modes)[i]);
(*channel_ids)[i] = channel->id;
/* Channel's topic */
- *channel_topics = silc_realloc(*channel_topics,
- sizeof(**channel_topics) * (i + 1));
+ tmp = silc_realloc(*channel_topics,
+ sizeof(**channel_topics) * (i + 1));
+ if (!tmp)
+ break;
+ *channel_topics = tmp;
(*channel_topics)[i] = NULL;
silc_server_announce_get_channel_topic(server, channel,
&(*channel_topics)[i]);
- i++;
- if (!silc_idcache_list_next(list, &id_cache))
+ /* Channel's invite and ban list */
+ tmp = silc_realloc(*channel_invites,
+ sizeof(**channel_invites) * (i + 1));
+ if (!tmp)
break;
- }
+ *channel_invites = tmp;
+ (*channel_invites)[i] = NULL;
+ tmp = silc_realloc(*channel_bans,
+ sizeof(**channel_bans) * (i + 1));
+ if (!tmp)
+ break;
+ *channel_bans = tmp;
+ (*channel_bans)[i] = NULL;
+ silc_server_announce_get_inviteban(server, channel,
+ &(*channel_invites)[i],
+ &(*channel_bans)[i]);
- *channel_users_modes_c += i;
- }
+ (*channel_users_modes_c)++;
- silc_idcache_list_free(list);
+ i++;
+ }
+ }
}
}
void silc_server_announce_channels(SilcServer server,
unsigned long creation_time,
- SilcSocketConnection remote)
+ SilcPacketStream remote)
{
- SilcBuffer channels = NULL, channel_users = NULL;
+ SilcBuffer channels = NULL, *channel_modes = NULL, channel_users = NULL;
SilcBuffer *channel_users_modes = NULL;
SilcBuffer *channel_topics = NULL;
- uint32 channel_users_modes_c = 0;
+ SilcBuffer *channel_invites = NULL;
+ SilcBuffer *channel_bans = NULL;
+ SilcUInt32 channel_users_modes_c = 0;
SilcChannelID **channel_ids = NULL;
SILC_LOG_DEBUG(("Announcing channels and channel users"));
/* Get channels and channel users in local list */
silc_server_announce_get_channels(server, server->local_list,
- &channels, &channel_users,
+ &channels, &channel_modes,
+ &channel_users,
&channel_users_modes,
&channel_users_modes_c,
&channel_topics,
+ &channel_invites,
+ &channel_bans,
&channel_ids, creation_time);
/* Get channels and channel users in global list */
if (server->server_type != SILC_SERVER)
silc_server_announce_get_channels(server, server->global_list,
- &channels, &channel_users,
+ &channels, &channel_modes,
+ &channel_users,
&channel_users_modes,
&channel_users_modes_c,
&channel_topics,
+ &channel_invites,
+ &channel_bans,
&channel_ids, creation_time);
if (channels) {
silc_buffer_push(channels, channels->data - channels->head);
- SILC_LOG_HEXDUMP(("channels"), channels->data, channels->len);
+ SILC_LOG_HEXDUMP(("channels"), channels->data, silc_buffer_len(channels));
/* Send the packet */
silc_server_packet_send(server, remote,
SILC_PACKET_NEW_CHANNEL, SILC_PACKET_FLAG_LIST,
- channels->data, channels->len,
- FALSE);
+ channels->data, silc_buffer_len(channels));
silc_buffer_free(channels);
}
if (channel_users) {
silc_buffer_push(channel_users, channel_users->data - channel_users->head);
- SILC_LOG_HEXDUMP(("channel users"), channel_users->data,
- channel_users->len);
+ SILC_LOG_HEXDUMP(("channel users"), channel_users->data,
+ silc_buffer_len(channel_users));
/* Send the packet */
silc_server_packet_send(server, remote,
SILC_PACKET_NOTIFY, SILC_PACKET_FLAG_LIST,
- channel_users->data, channel_users->len,
- FALSE);
+ channel_users->data, silc_buffer_len(channel_users));
silc_buffer_free(channel_users);
}
+ if (channel_modes) {
+ int i;
+
+ for (i = 0; i < channel_users_modes_c; i++) {
+ if (!channel_modes[i])
+ continue;
+ silc_buffer_push(channel_modes[i],
+ channel_modes[i]->data -
+ channel_modes[i]->head);
+ SILC_LOG_HEXDUMP(("channel modes"), channel_modes[i]->data,
+ silc_buffer_len(channel_modes[i]));
+ silc_server_packet_send_dest(server, remote,
+ SILC_PACKET_NOTIFY, SILC_PACKET_FLAG_LIST,
+ channel_ids[i], SILC_ID_CHANNEL,
+ channel_modes[i]->data,
+ silc_buffer_len(channel_modes[i]));
+ silc_buffer_free(channel_modes[i]);
+ }
+ silc_free(channel_modes);
+ }
+
if (channel_users_modes) {
int i;
for (i = 0; i < channel_users_modes_c; i++) {
- silc_buffer_push(channel_users_modes[i],
- channel_users_modes[i]->data -
+ if (!channel_users_modes[i])
+ continue;
+ silc_buffer_push(channel_users_modes[i],
+ channel_users_modes[i]->data -
channel_users_modes[i]->head);
- SILC_LOG_HEXDUMP(("channel users modes"), channel_users_modes[i]->data,
- channel_users_modes[i]->len);
+ SILC_LOG_HEXDUMP(("channel users modes"), channel_users_modes[i]->data,
+ silc_buffer_len(channel_users_modes[i]));
silc_server_packet_send_dest(server, remote,
SILC_PACKET_NOTIFY, SILC_PACKET_FLAG_LIST,
channel_ids[i], SILC_ID_CHANNEL,
- channel_users_modes[i]->data,
- channel_users_modes[i]->len,
- FALSE);
+ channel_users_modes[i]->data,
+ silc_buffer_len(channel_users_modes[i]));
silc_buffer_free(channel_users_modes[i]);
}
silc_free(channel_users_modes);
if (!channel_topics[i])
continue;
- silc_buffer_push(channel_topics[i],
- channel_topics[i]->data -
+ silc_buffer_push(channel_topics[i],
+ channel_topics[i]->data -
channel_topics[i]->head);
- SILC_LOG_HEXDUMP(("channel topic"), channel_topics[i]->data,
- channel_topics[i]->len);
+ SILC_LOG_HEXDUMP(("channel topic"), channel_topics[i]->data,
+ silc_buffer_len(channel_topics[i]));
silc_server_packet_send_dest(server, remote,
SILC_PACKET_NOTIFY, SILC_PACKET_FLAG_LIST,
channel_ids[i], SILC_ID_CHANNEL,
- channel_topics[i]->data,
- channel_topics[i]->len,
- FALSE);
+ channel_topics[i]->data,
+ silc_buffer_len(channel_topics[i]));
silc_buffer_free(channel_topics[i]);
}
silc_free(channel_topics);
}
+ if (channel_invites) {
+ int i;
+
+ for (i = 0; i < channel_users_modes_c; i++) {
+ if (!channel_invites[i])
+ continue;
+
+ silc_buffer_push(channel_invites[i],
+ channel_invites[i]->data -
+ channel_invites[i]->head);
+ SILC_LOG_HEXDUMP(("channel invite list"), channel_invites[i]->data,
+ silc_buffer_len(channel_invites[i]));
+ silc_server_packet_send_dest(server, remote,
+ SILC_PACKET_NOTIFY, SILC_PACKET_FLAG_LIST,
+ channel_ids[i], SILC_ID_CHANNEL,
+ channel_invites[i]->data,
+ silc_buffer_len(channel_invites[i]));
+ silc_buffer_free(channel_invites[i]);
+ }
+ silc_free(channel_invites);
+ }
+
+ if (channel_bans) {
+ int i;
+
+ for (i = 0; i < channel_users_modes_c; i++) {
+ if (!channel_bans[i])
+ continue;
+
+ silc_buffer_push(channel_bans[i],
+ channel_bans[i]->data -
+ channel_bans[i]->head);
+ SILC_LOG_HEXDUMP(("channel ban list"), channel_bans[i]->data,
+ silc_buffer_len(channel_bans[i]));
+ silc_server_packet_send_dest(server, remote,
+ SILC_PACKET_NOTIFY, SILC_PACKET_FLAG_LIST,
+ channel_ids[i], SILC_ID_CHANNEL,
+ channel_bans[i]->data,
+ silc_buffer_len(channel_bans[i]));
+ silc_buffer_free(channel_bans[i]);
+ }
+ silc_free(channel_bans);
+ }
+
silc_free(channel_ids);
}
-/* Failure timeout callback. If this is called then we will immediately
- process the received failure. We always process the failure with timeout
- since we do not want to blindly trust to received failure packets.
- This won't be called (the timeout is cancelled) if the failure was
- bogus (it is bogus if remote does not close the connection after sending
- the failure). */
+/* Announces WATCH list. */
-SILC_TASK_CALLBACK(silc_server_failure_callback)
+void silc_server_announce_watches(SilcServer server,
+ SilcPacketStream remote)
{
- SilcServerFailureContext f = (SilcServerFailureContext)context;
+ SilcHashTableList htl;
+ SilcBuffer buffer, idp, args, pkp;
+ SilcClientEntry client;
+ void *key;
- if (f->sock->protocol) {
- f->sock->protocol->state = SILC_PROTOCOL_STATE_FAILURE;
- silc_protocol_execute(f->sock->protocol, f->server->schedule, 0, 0);
- }
+ SILC_LOG_DEBUG(("Announcing watch list"));
+
+ /* XXX because way we save the nicks (hash) we cannot announce them. */
+
+ /* XXX we should send all public keys in one command if client is
+ watching more than one key */
+ silc_hash_table_list(server->watcher_list_pk, &htl);
+ while (silc_hash_table_get(&htl, &key, (void *)&client)) {
+ if (!client || !client->id)
+ continue;
+
+ server->stat.commands_sent++;
- silc_free(f);
+ idp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
+ args = silc_buffer_alloc_size(2);
+ silc_buffer_format(args,
+ SILC_STR_UI_SHORT(1),
+ SILC_STR_END);
+ pkp = silc_public_key_payload_encode(key);
+ args = silc_argument_payload_encode_one(args, pkp->data,
+ silc_buffer_len(pkp), 0x00);
+ buffer = silc_command_payload_encode_va(SILC_COMMAND_WATCH,
+ ++server->cmd_ident, 2,
+ 1, idp->data, silc_buffer_len(idp),
+ 4, args->data,
+ silc_buffer_len(args));
+
+ /* Send command */
+ silc_server_packet_send(server, remote, SILC_PACKET_COMMAND, 0,
+ buffer->data, silc_buffer_len(buffer));
+
+ silc_buffer_free(pkp);
+ silc_buffer_free(args);
+ silc_buffer_free(idp);
+ silc_buffer_free(buffer);
+ }
+ silc_hash_table_list_reset(&htl);
}
/* Assembles user list and users mode list from the `channel'. */
-void silc_server_get_users_on_channel(SilcServer server,
- SilcChannelEntry channel,
- SilcBuffer *user_list,
- SilcBuffer *mode_list,
- uint32 *user_count)
+SilcBool silc_server_get_users_on_channel(SilcServer server,
+ SilcChannelEntry channel,
+ SilcBuffer *user_list,
+ SilcBuffer *mode_list,
+ SilcUInt32 *user_count)
{
SilcChannelClientEntry chl;
SilcHashTableList htl;
SilcBuffer client_id_list;
SilcBuffer client_mode_list;
SilcBuffer idp;
- uint32 list_count = 0, len = 0;
+ SilcUInt32 list_count = 0, len = 0;
+
+ if (!silc_hash_table_count(channel->user_list))
+ return FALSE;
silc_hash_table_list(channel->user_list, &htl);
while (silc_hash_table_get(&htl, NULL, (void *)&chl))
len += (silc_id_get_len(chl->client->id, SILC_ID_CLIENT) + 4);
+ silc_hash_table_list_reset(&htl);
client_id_list = silc_buffer_alloc(len);
- client_mode_list =
+ client_mode_list =
silc_buffer_alloc(4 * silc_hash_table_count(channel->user_list));
- silc_buffer_pull_tail(client_id_list, SILC_BUFFER_END(client_id_list));
- silc_buffer_pull_tail(client_mode_list, SILC_BUFFER_END(client_mode_list));
+ silc_buffer_pull_tail(client_id_list, silc_buffer_truelen(client_id_list));
+ silc_buffer_pull_tail(client_mode_list,
+ silc_buffer_truelen(client_mode_list));
silc_hash_table_list(channel->user_list, &htl);
while (silc_hash_table_get(&htl, NULL, (void *)&chl)) {
/* Client ID */
idp = silc_id_payload_encode(chl->client->id, SILC_ID_CLIENT);
- silc_buffer_put(client_id_list, idp->data, idp->len);
- silc_buffer_pull(client_id_list, idp->len);
+ silc_buffer_put(client_id_list, idp->data, silc_buffer_len(idp));
+ silc_buffer_pull(client_id_list, silc_buffer_len(idp));
silc_buffer_free(idp);
/* Client's mode on channel */
list_count++;
}
- silc_buffer_push(client_id_list,
+ silc_hash_table_list_reset(&htl);
+ silc_buffer_push(client_id_list,
client_id_list->data - client_id_list->head);
- silc_buffer_push(client_mode_list,
+ silc_buffer_push(client_mode_list,
client_mode_list->data - client_mode_list->head);
*user_list = client_id_list;
*mode_list = client_mode_list;
*user_count = list_count;
+ return TRUE;
}
/* Saves users and their modes to the `channel'. */
void silc_server_save_users_on_channel(SilcServer server,
- SilcSocketConnection sock,
+ SilcPacketStream sock,
SilcChannelEntry channel,
SilcClientID *noadd,
SilcBuffer user_list,
SilcBuffer mode_list,
- uint32 user_count)
+ SilcUInt32 user_count)
{
int i;
- uint16 idp_len;
- uint32 mode;
- SilcClientID *client_id;
+ SilcUInt16 idp_len;
+ SilcUInt32 mode;
+ SilcID id;
SilcClientEntry client;
SilcIDCacheEntry cache;
- bool global;
+ SilcChannelClientEntry chl;
+
+ SILC_LOG_DEBUG(("Saving %d users on %s channel", user_count,
+ channel->channel_name));
for (i = 0; i < user_count; i++) {
/* Client ID */
SILC_GET16_MSB(idp_len, user_list->data + 2);
idp_len += 4;
- client_id = silc_id_payload_parse_id(user_list->data, idp_len);
- silc_buffer_pull(user_list, idp_len);
- if (!client_id)
+ if (!silc_id_payload_parse_id(user_list->data, idp_len, &id))
continue;
+ silc_buffer_pull(user_list, idp_len);
/* Mode */
SILC_GET32_MSB(mode, mode_list->data);
silc_buffer_pull(mode_list, 4);
- if (noadd && SILC_ID_CLIENT_COMPARE(client_id, noadd)) {
- silc_free(client_id);
+ if (noadd && SILC_ID_CLIENT_COMPARE(&id.u.client_id, noadd))
continue;
- }
- global = FALSE;
-
+ cache = NULL;
+
/* Check if we have this client cached already. */
- client = silc_idlist_find_client_by_id(server->local_list, client_id,
+ client = silc_idlist_find_client_by_id(server->local_list,
+ &id.u.client_id,
server->server_type, &cache);
- if (!client) {
- client = silc_idlist_find_client_by_id(server->global_list,
- client_id, server->server_type,
- &cache);
- global = TRUE;
- }
+ if (!client)
+ client = silc_idlist_find_client_by_id(server->global_list,
+ &id.u.client_id,
+ server->server_type, &cache);
if (!client) {
/* If router did not find such Client ID in its lists then this must
be bogus client or some router in the net is buggy. */
- if (server->server_type == SILC_ROUTER) {
- silc_free(client_id);
+ if (server->server_type != SILC_SERVER)
continue;
- }
/* We don't have that client anywhere, add it. The client is added
- to global list since server didn't have it in the lists so it must be
+ to global list since server didn't have it in the lists so it must be
global. */
client = silc_idlist_add_client(server->global_list, NULL, NULL, NULL,
- silc_id_dup(client_id, SILC_ID_CLIENT),
- sock->user_data, NULL, 0);
+ silc_id_dup(&id.u.client_id,
+ SILC_ID_CLIENT),
+ silc_packet_get_context(sock),
+ NULL);
if (!client) {
SILC_LOG_ERROR(("Could not add new client to the ID Cache"));
- silc_free(client_id);
continue;
}
client->data.status |= SILC_IDLIST_STATUS_REGISTERED;
- } else {
- /* Found, if it is from global list we'll assure that we won't
- expire it now that the entry is on channel. */
- if (global)
- cache->expire = 0;
}
- silc_free(client_id);
+ if (!(client->data.status & SILC_IDLIST_STATUS_REGISTERED)) {
+ SILC_LOG_ERROR(("Attempting to add unregistered client to channel ",
+ "%s", channel->channel_name));
+ continue;
+ }
- if (!silc_server_client_on_channel(client, channel)) {
+ if (!silc_server_client_on_channel(client, channel, &chl)) {
/* Client was not on the channel, add it. */
- SilcChannelClientEntry chl = silc_calloc(1, sizeof(*chl));
+ chl = silc_calloc(1, sizeof(*chl));
chl->client = client;
chl->mode = mode;
chl->channel = channel;
silc_hash_table_add(channel->user_list, chl->client, chl);
silc_hash_table_add(client->channels, chl->channel, chl);
+ channel->user_count++;
+ } else {
+ /* Update mode */
+ chl->mode = mode;
+ }
+ }
+}
+
+/* Saves channels and channels user modes to the `client'. Removes
+ the client from those channels that are not sent in the list but
+ it has joined. */
+
+void silc_server_save_user_channels(SilcServer server,
+ SilcPacketStream sock,
+ SilcClientEntry client,
+ SilcBuffer channels,
+ SilcBuffer channels_user_modes)
+{
+ SilcDList ch;
+ SilcUInt32 *chumodes;
+ SilcChannelPayload entry;
+ SilcChannelEntry channel;
+ SilcChannelID channel_id;
+ SilcChannelClientEntry chl;
+ SilcHashTable ht = NULL;
+ SilcHashTableList htl;
+ char *name;
+ int i = 0;
+
+ if (!channels || !channels_user_modes ||
+ !(client->data.status & SILC_IDLIST_STATUS_REGISTERED))
+ goto out;
+
+ ch = silc_channel_payload_parse_list(channels->data,
+ silc_buffer_len(channels));
+ if (ch && silc_get_mode_list(channels_user_modes, silc_dlist_count(ch),
+ &chumodes)) {
+ ht = silc_hash_table_alloc(0, silc_hash_ptr, NULL, NULL,
+ NULL, NULL, NULL, TRUE);
+ silc_dlist_start(ch);
+ while ((entry = silc_dlist_get(ch)) != SILC_LIST_END) {
+ /* Check if we have this channel, and add it if we don't have it.
+ Also add the client on the channel unless it is there already. */
+ if (!silc_channel_get_id_parse(entry, &channel_id))
+ continue;
+ channel = silc_idlist_find_channel_by_id(server->local_list,
+ &channel_id, NULL);
+ if (!channel)
+ channel = silc_idlist_find_channel_by_id(server->global_list,
+ &channel_id, NULL);
+ if (!channel) {
+ if (server->server_type != SILC_SERVER) {
+ i++;
+ continue;
+ }
+
+ /* We don't have that channel anywhere, add it. */
+ name = silc_channel_get_name(entry, NULL);
+ channel = silc_idlist_add_channel(server->global_list, strdup(name), 0,
+ silc_id_dup(&channel_id,
+ SILC_ID_CHANNEL),
+ server->router, NULL, NULL, 0);
+ if (!channel) {
+ i++;
+ continue;
+ }
+ }
+
+ channel->mode = silc_channel_get_mode(entry);
+
+ /* Add the client on the channel */
+ if (!silc_server_client_on_channel(client, channel, &chl)) {
+ chl = silc_calloc(1, sizeof(*chl));
+ chl->client = client;
+ chl->mode = chumodes[i++];
+ chl->channel = channel;
+ silc_hash_table_add(channel->user_list, chl->client, chl);
+ silc_hash_table_add(client->channels, chl->channel, chl);
+ channel->user_count++;
+ } else {
+ /* Update mode */
+ chl->mode = chumodes[i++];
+ }
+
+ silc_hash_table_add(ht, channel, channel);
+ }
+ silc_channel_payload_list_free(ch);
+ silc_free(chumodes);
+ }
+
+ out:
+ /* Go through the list again and remove client from channels that
+ are no part of the list. */
+ if (ht) {
+ silc_hash_table_list(client->channels, &htl);
+ while (silc_hash_table_get(&htl, NULL, (void *)&chl)) {
+ if (!silc_hash_table_find(ht, chl->channel, NULL, NULL)) {
+ silc_hash_table_del(chl->channel->user_list, chl->client);
+ silc_hash_table_del(chl->client->channels, chl->channel);
+ silc_free(chl);
+ }
}
+ silc_hash_table_list_reset(&htl);
+ silc_hash_table_free(ht);
+ } else {
+ silc_hash_table_list(client->channels, &htl);
+ while (silc_hash_table_get(&htl, NULL, (void *)&chl)) {
+ silc_hash_table_del(chl->channel->user_list, chl->client);
+ silc_hash_table_del(chl->client->channels, chl->channel);
+ silc_free(chl);
+ }
+ silc_hash_table_list_reset(&htl);
}
}
could not be found to the client. If the `client_id' is specified then
it is used and the `id_data' is ignored. */
-SilcSocketConnection silc_server_get_client_route(SilcServer server,
- unsigned char *id_data,
- uint32 id_len,
- SilcClientID *client_id,
- SilcIDListData *idata)
+SilcPacketStream
+silc_server_get_client_route(SilcServer server,
+ unsigned char *id_data,
+ SilcUInt32 id_len,
+ SilcClientID *client_id,
+ SilcIDListData *idata,
+ SilcClientEntry *client_entry)
{
- SilcClientID *id;
+ SilcClientID *id, clid;
SilcClientEntry client;
SILC_LOG_DEBUG(("Start"));
+ if (client_entry)
+ *client_entry = NULL;
+
/* Decode destination Client ID */
if (!client_id) {
- id = silc_id_str2id(id_data, id_len, SILC_ID_CLIENT);
- if (!id) {
- SILC_LOG_ERROR(("Could not decode destination Client ID, dropped"));
+ if (!silc_id_str2id(id_data, id_len, SILC_ID_CLIENT, &clid, sizeof(clid)))
return NULL;
- }
+ id = silc_id_dup(&clid, SILC_ID_CLIENT);
} else {
id = silc_id_dup(client_id, SILC_ID_CLIENT);
}
/* Seems that client really is directly connected to us */
if (idata)
*idata = (SilcIDListData)client;
+ if (client_entry)
+ *client_entry = client;
return client->connection;
}
silc_free(id);
if (idata)
*idata = (SilcIDListData)server->router;
- return server->router->connection;
+ return SILC_PRIMARY_ROUTE(server);
}
- /* We are router and we will perform route lookup for the destination
+ /* We are router and we will perform route lookup for the destination
and send the packet to fastest route. */
if (server->server_type == SILC_ROUTER && !server->standalone) {
/* Check first that the ID is valid */
- client = silc_idlist_find_client_by_id(server->global_list, id,
+ client = silc_idlist_find_client_by_id(server->global_list, id,
TRUE, NULL);
if (client) {
- SilcSocketConnection dst_sock;
+ SilcPacketStream dst_sock;
dst_sock = silc_server_route_get(server, id, SILC_ID_CLIENT);
silc_free(id);
- if (idata)
- *idata = (SilcIDListData)dst_sock->user_data;
+ if (idata && dst_sock)
+ *idata = silc_packet_get_context(dst_sock);
return dst_sock;
}
}
Secret channels are not put to the list. */
SilcBuffer silc_server_get_client_channel_list(SilcServer server,
- SilcClientEntry client)
+ SilcClientEntry client,
+ SilcBool get_private,
+ SilcBool get_secret,
+ SilcBuffer *user_mode_list)
{
SilcBuffer buffer = NULL;
SilcChannelEntry channel;
SilcChannelClientEntry chl;
SilcHashTableList htl;
- unsigned char *cid;
- uint32 id_len;
- uint16 name_len;
+ unsigned char cid[32];
+ SilcUInt32 id_len;
+ SilcUInt16 name_len;
int len;
+ if (user_mode_list)
+ *user_mode_list = NULL;
+
silc_hash_table_list(client->channels, &htl);
while (silc_hash_table_get(&htl, NULL, (void *)&chl)) {
channel = chl->channel;
- if (channel->mode & SILC_CHANNEL_MODE_SECRET ||
- channel->mode & SILC_CHANNEL_MODE_PRIVATE)
+ if (channel->mode & SILC_CHANNEL_MODE_SECRET && !get_secret)
+ continue;
+ if (channel->mode & SILC_CHANNEL_MODE_PRIVATE && !get_private)
continue;
- cid = silc_id_id2str(channel->id, SILC_ID_CHANNEL);
- id_len = silc_id_get_len(channel->id, SILC_ID_CHANNEL);
+ silc_id_id2str(channel->id, SILC_ID_CHANNEL, cid, sizeof(cid), &id_len);
name_len = strlen(channel->channel_name);
-
+
len = 4 + name_len + id_len + 4;
- buffer = silc_buffer_realloc(buffer,
- (buffer ? (buffer)->truelen + len : len));
- silc_buffer_pull_tail(buffer, ((buffer)->end - (buffer)->data));
+ buffer = silc_buffer_realloc(buffer,
+ (buffer ?
+ silc_buffer_truelen(buffer) + len : len));
+ silc_buffer_pull_tail(buffer, (buffer->end - buffer->data));
silc_buffer_format(buffer,
SILC_STR_UI_SHORT(name_len),
- SILC_STR_UI_XNSTRING(channel->channel_name,
- name_len),
+ SILC_STR_DATA(channel->channel_name, name_len),
SILC_STR_UI_SHORT(id_len),
- SILC_STR_UI_XNSTRING(cid, id_len),
- SILC_STR_UI_INT(chl->mode), /* Client's mode */
+ SILC_STR_DATA(cid, id_len),
+ SILC_STR_UI_INT(chl->channel->mode),
SILC_STR_END);
silc_buffer_pull(buffer, len);
- silc_free(cid);
+
+ if (user_mode_list) {
+ *user_mode_list =
+ silc_buffer_realloc(*user_mode_list,
+ (*user_mode_list ?
+ silc_buffer_truelen((*user_mode_list)) + 4 : 4));
+ silc_buffer_pull_tail(*user_mode_list, ((*user_mode_list)->end -
+ (*user_mode_list)->data));
+ SILC_PUT32_MSB(chl->mode, (*user_mode_list)->data);
+ silc_buffer_pull(*user_mode_list, 4);
+ }
}
+ silc_hash_table_list_reset(&htl);
if (buffer)
silc_buffer_push(buffer, buffer->data - buffer->head);
+ if (user_mode_list && *user_mode_list)
+ silc_buffer_push(*user_mode_list, ((*user_mode_list)->data -
+ (*user_mode_list)->head));
return buffer;
}
-/* Finds client entry by Client ID and if it is not found then resolves
- it using WHOIS command. */
-
-SilcClientEntry silc_server_get_client_resolve(SilcServer server,
- SilcClientID *client_id)
-{
- SilcClientEntry client;
-
- client = silc_idlist_find_client_by_id(server->local_list, client_id,
- TRUE, NULL);
- if (!client) {
- client = silc_idlist_find_client_by_id(server->global_list,
- client_id, TRUE, NULL);
- if (!client && server->server_type == SILC_ROUTER)
- return NULL;
- }
-
- if (!client && server->standalone)
- return NULL;
-
- if (!client || !client->nickname || !client->username) {
- SilcBuffer buffer, idp;
-
- client->data.status |= SILC_IDLIST_STATUS_RESOLVING;
- client->data.status &= ~SILC_IDLIST_STATUS_RESOLVED;
- client->resolve_cmd_ident = ++server->cmd_ident;
-
- idp = silc_id_payload_encode(client_id, SILC_ID_CLIENT);
- buffer = silc_command_payload_encode_va(SILC_COMMAND_WHOIS,
- server->cmd_ident, 1,
- 3, idp->data, idp->len);
- silc_server_packet_send(server, client ? client->router->connection :
- server->router->connection,
- SILC_PACKET_COMMAND, 0,
- buffer->data, buffer->len, FALSE);
- silc_buffer_free(idp);
- silc_buffer_free(buffer);
- return NULL;
- }
-
- return client;
-}
-
-/* A timeout callback for the re-key. We will be the initiator of the
- re-key protocol. */
-
-SILC_TASK_CALLBACK(silc_server_rekey_callback)
-{
- SilcSocketConnection sock = (SilcSocketConnection)context;
- SilcIDListData idata = (SilcIDListData)sock->user_data;
- SilcServer server = (SilcServer)idata->rekey->context;
- SilcProtocol protocol;
- SilcServerRekeyInternalContext *proto_ctx;
-
- SILC_LOG_DEBUG(("Start"));
-
- /* Allocate internal protocol context. This is sent as context
- to the protocol. */
- proto_ctx = silc_calloc(1, sizeof(*proto_ctx));
- proto_ctx->server = (void *)server;
- proto_ctx->sock = sock;
- proto_ctx->responder = FALSE;
- proto_ctx->pfs = idata->rekey->pfs;
-
- /* Perform rekey protocol. Will call the final callback after the
- protocol is over. */
- silc_protocol_alloc(SILC_PROTOCOL_SERVER_REKEY,
- &protocol, proto_ctx, silc_server_rekey_final);
- sock->protocol = protocol;
-
- /* Run the protocol */
- silc_protocol_execute(protocol, server->schedule, 0, 0);
-
- /* Re-register re-key timeout */
- silc_schedule_task_add(server->schedule, sock->sock,
- silc_server_rekey_callback,
- context, idata->rekey->timeout, 0,
- SILC_TASK_TIMEOUT, SILC_TASK_PRI_NORMAL);
-}
-
-/* The final callback for the REKEY protocol. This will actually take the
- new key material into use. */
+/* Task callback used to retrieve network statistical information from
+ router server once in a while. */
-SILC_TASK_CALLBACK_GLOBAL(silc_server_rekey_final)
+SILC_TASK_CALLBACK(silc_server_get_stats)
{
- SilcProtocol protocol = (SilcProtocol)context;
- SilcServerRekeyInternalContext *ctx =
- (SilcServerRekeyInternalContext *)protocol->context;
- SilcServer server = (SilcServer)ctx->server;
- SilcSocketConnection sock = ctx->sock;
-
- SILC_LOG_DEBUG(("Start"));
-
- if (protocol->state == SILC_PROTOCOL_STATE_ERROR ||
- protocol->state == SILC_PROTOCOL_STATE_FAILURE) {
- /* Error occured during protocol */
- SILC_LOG_ERROR(("Error occurred during rekey protocol"));
- silc_protocol_cancel(protocol, server->schedule);
- silc_protocol_free(protocol);
- sock->protocol = NULL;
- if (ctx->packet)
- silc_packet_context_free(ctx->packet);
- if (ctx->ske)
- silc_ske_free(ctx->ske);
- silc_free(ctx);
- return;
+ SilcServer server = (SilcServer)context;
+ SilcBuffer idp, packet;
+
+ if (!server->standalone) {
+ SILC_LOG_DEBUG(("Retrieving stats from router"));
+ server->stat.commands_sent++;
+ idp = silc_id_payload_encode(server->router->id, SILC_ID_SERVER);
+ if (idp) {
+ packet = silc_command_payload_encode_va(SILC_COMMAND_STATS,
+ ++server->cmd_ident, 1,
+ 1, idp->data,
+ silc_buffer_len(idp));
+ silc_server_packet_send(server, SILC_PRIMARY_ROUTE(server),
+ SILC_PACKET_COMMAND, 0, packet->data,
+ silc_buffer_len(packet));
+ silc_buffer_free(packet);
+ silc_buffer_free(idp);
+ }
}
- /* Purge the outgoing data queue to assure that all rekey packets really
- go to the network before we quit the protocol. */
- silc_server_packet_queue_purge(server, sock);
-
- /* Cleanup */
- silc_protocol_free(protocol);
- sock->protocol = NULL;
- if (ctx->packet)
- silc_packet_context_free(ctx->packet);
- if (ctx->ske)
- silc_ske_free(ctx->ske);
- silc_free(ctx);
+ silc_schedule_task_add_timeout(server->schedule, silc_server_get_stats,
+ server, 120, 0);
}
projects / silc.git / blobdiff