5 Author: Pekka Riikonen <priikone@poseidon.pspt.fi>
7 Copyright (C) 1997 - 2001 Pekka Riikonen
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
22 #include "serverincludes.h"
23 #include "server_internal.h"
25 static int silc_server_is_registered(SilcServer server,
26 SilcSocketConnection sock,
27 SilcServerCommandContext cmd,
30 silc_server_command_send_status_reply(SilcServerCommandContext cmd,
32 SilcCommandStatus status);
34 silc_server_command_send_status_data(SilcServerCommandContext cmd,
36 SilcCommandStatus status,
37 unsigned int arg_type,
39 unsigned int arg_len);
40 void silc_server_command_send_users(SilcServer server,
41 SilcSocketConnection sock,
42 SilcChannelEntry channel,
45 /* Server command list. */
46 SilcServerCommand silc_command_list[] =
48 SILC_SERVER_CMD(whois, WHOIS, SILC_CF_LAG | SILC_CF_REG),
49 SILC_SERVER_CMD(whowas, WHOWAS, SILC_CF_LAG | SILC_CF_REG),
50 SILC_SERVER_CMD(identify, IDENTIFY, SILC_CF_LAG | SILC_CF_REG),
51 SILC_SERVER_CMD(nick, NICK, SILC_CF_LAG | SILC_CF_REG),
52 SILC_SERVER_CMD(list, LIST, SILC_CF_LAG | SILC_CF_REG),
53 SILC_SERVER_CMD(topic, TOPIC, SILC_CF_LAG | SILC_CF_REG),
54 SILC_SERVER_CMD(invite, INVITE, SILC_CF_LAG | SILC_CF_REG),
55 SILC_SERVER_CMD(quit, QUIT, SILC_CF_LAG | SILC_CF_REG),
56 SILC_SERVER_CMD(kill, KILL, SILC_CF_LAG | SILC_CF_REG | SILC_CF_OPER),
57 SILC_SERVER_CMD(info, INFO, SILC_CF_LAG | SILC_CF_REG),
58 SILC_SERVER_CMD(connect, CONNECT,
59 SILC_CF_LAG | SILC_CF_REG | SILC_CF_OPER),
60 SILC_SERVER_CMD(ping, PING, SILC_CF_LAG | SILC_CF_REG),
61 SILC_SERVER_CMD(oper, OPER, SILC_CF_LAG | SILC_CF_REG | SILC_CF_OPER),
62 SILC_SERVER_CMD(join, JOIN, SILC_CF_LAG | SILC_CF_REG),
63 SILC_SERVER_CMD(motd, MOTD, SILC_CF_LAG | SILC_CF_REG),
64 SILC_SERVER_CMD(umode, UMODE, SILC_CF_LAG | SILC_CF_REG),
65 SILC_SERVER_CMD(cmode, CMODE, SILC_CF_LAG | SILC_CF_REG),
66 SILC_SERVER_CMD(cumode, CUMODE, SILC_CF_LAG | SILC_CF_REG),
67 SILC_SERVER_CMD(kick, KICK, SILC_CF_LAG | SILC_CF_REG),
68 SILC_SERVER_CMD(restart, RESTART,
69 SILC_CF_LAG | SILC_CF_REG | SILC_CF_OPER),
70 SILC_SERVER_CMD(close, CLOSE,
71 SILC_CF_LAG | SILC_CF_REG | SILC_CF_OPER),
72 SILC_SERVER_CMD(shutdown, SHUTDOWN, SILC_CF_LAG | SILC_CF_REG |
74 SILC_SERVER_CMD(silcoper, SILCOPER,
75 SILC_CF_LAG | SILC_CF_REG | SILC_CF_SILC_OPER),
76 SILC_SERVER_CMD(leave, LEAVE, SILC_CF_LAG | SILC_CF_REG),
77 SILC_SERVER_CMD(users, USERS, SILC_CF_LAG | SILC_CF_REG),
82 #define SILC_SERVER_COMMAND_CHECK_ARGC(command, context, min, max) \
84 unsigned int _argc = silc_argument_get_arg_num(cmd->args); \
86 SILC_LOG_DEBUG(("Start")); \
89 silc_server_command_send_status_reply(cmd, command, \
90 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS); \
91 silc_server_command_free(cmd); \
95 silc_server_command_send_status_reply(cmd, command, \
96 SILC_STATUS_ERR_TOO_MANY_PARAMS); \
97 silc_server_command_free(cmd); \
102 /* Returns TRUE if the connection is registered. Unregistered connections
103 usually cannot send commands hence the check. */
105 static int silc_server_is_registered(SilcServer server,
106 SilcSocketConnection sock,
107 SilcServerCommandContext cmd,
110 SilcIDListData idata = (SilcIDListData)sock->user_data;
111 if (idata->registered)
114 silc_server_command_send_status_reply(cmd, command,
115 SILC_STATUS_ERR_NOT_REGISTERED);
116 silc_server_command_free(cmd);
120 /* Processes received command packet. */
122 void silc_server_command_process(SilcServer server,
123 SilcSocketConnection sock,
124 SilcPacketContext *packet)
126 SilcServerCommandContext ctx;
127 SilcServerCommand *cmd;
130 /* XXX allow commands in but do not execute them more than once per
133 /* Check whether it is allowed for this connection to execute any
135 if (sock->type == SILC_SOCKET_TYPE_CLIENT) {
137 SilcClientEntry client = (SilcClientEntry)sock->user_data;
142 /* Allow only one command executed in 2 seconds. */
143 curtime = time(NULL);
144 if (client->last_command && (curtime - client->last_command) < 2)
147 /* Update access time */
148 client->last_command = curtime;
152 /* Allocate command context. This must be free'd by the
153 command routine receiving it. */
154 ctx = silc_server_command_alloc();
155 ctx->server = server;
156 ctx->sock = silc_socket_dup(sock);
157 ctx->packet = silc_packet_context_dup(packet); /* Save original packet */
159 /* Parse the command payload in the packet */
160 ctx->payload = silc_command_payload_parse(packet->buffer);
162 SILC_LOG_ERROR(("Bad command payload, packet dropped"));
163 silc_buffer_free(packet->buffer);
164 silc_packet_context_free(packet);
165 silc_socket_free(ctx->sock);
169 ctx->args = silc_command_get_args(ctx->payload);
171 /* Execute command. If this fails the packet is dropped. */
172 for (cmd = silc_command_list; cmd->cb; cmd++)
173 if (cmd->cmd == silc_command_get(ctx->payload)) {
175 if (!(cmd->flags & SILC_CF_REG)) {
180 if (silc_server_is_registered(server, sock, ctx, cmd->cmd)) {
187 SILC_LOG_ERROR(("Unknown command, packet dropped"));
188 silc_server_command_free(ctx);
193 /* Allocate Command Context */
195 SilcServerCommandContext silc_server_command_alloc()
197 SilcServerCommandContext ctx = silc_calloc(1, sizeof(*ctx));
202 /* Free's the command context allocated before executing the command */
204 void silc_server_command_free(SilcServerCommandContext ctx)
207 SILC_LOG_DEBUG(("Command context %p refcnt %d->%d", ctx, ctx->users + 1,
209 if (ctx->users < 1) {
211 silc_command_free_payload(ctx->payload);
213 silc_packet_context_free(ctx->packet);
215 silc_socket_free(ctx->sock); /* Decrease reference counter */
220 /* Duplicate Command Context by adding reference counter. The context won't
221 be free'd untill it hits zero. */
223 SilcServerCommandContext
224 silc_server_command_dup(SilcServerCommandContext ctx)
227 SILC_LOG_DEBUG(("Command context %p refcnt %d->%d", ctx, ctx->users - 1,
232 /* Add new pending command to be executed when reply to a command has been
233 received. The `reply_cmd' is the command that will call the `callback'
234 with `context' when reply has been received. If `ident' is non-zero
235 the `callback' will be executed when received reply with command
236 identifier `ident'. */
238 void silc_server_command_pending(SilcServer server,
239 SilcCommand reply_cmd,
240 unsigned short ident,
241 SilcServerPendingDestructor destructor,
242 SilcCommandCb callback,
245 SilcServerCommandPending *reply;
247 reply = silc_calloc(1, sizeof(*reply));
248 reply->reply_cmd = reply_cmd;
249 reply->ident = ident;
250 reply->context = context;
251 reply->callback = callback;
252 reply->destructor = destructor;
253 silc_dlist_add(server->pending_commands, reply);
256 /* Deletes pending command by reply command type. */
258 void silc_server_command_pending_del(SilcServer server,
259 SilcCommand reply_cmd,
260 unsigned short ident)
262 SilcServerCommandPending *r;
264 silc_dlist_start(server->pending_commands);
265 while ((r = silc_dlist_get(server->pending_commands)) != SILC_LIST_END) {
266 if (r->reply_cmd == reply_cmd && r->ident == ident) {
267 silc_dlist_del(server->pending_commands, r);
273 /* Checks for pending commands and marks callbacks to be called from
274 the command reply function. Returns TRUE if there were pending command. */
276 int silc_server_command_pending_check(SilcServer server,
277 SilcServerCommandReplyContext ctx,
279 unsigned short ident)
281 SilcServerCommandPending *r;
283 silc_dlist_start(server->pending_commands);
284 while ((r = silc_dlist_get(server->pending_commands)) != SILC_LIST_END) {
285 if (r->reply_cmd == command && r->ident == ident) {
286 ctx->context = r->context;
287 ctx->callback = r->callback;
288 ctx->destructor = r->destructor;
297 /* Destructor function for pending callbacks. This is called when using
298 pending commands to free the context given for the pending command. */
300 static void silc_server_command_destructor(void *context)
302 silc_server_command_free((SilcServerCommandContext)context);
305 /* Sends simple status message as command reply packet */
308 silc_server_command_send_status_reply(SilcServerCommandContext cmd,
310 SilcCommandStatus status)
314 SILC_LOG_DEBUG(("Sending command status %d", status));
316 buffer = silc_command_reply_payload_encode_va(command, status, 0, 0);
317 silc_server_packet_send(cmd->server, cmd->sock,
318 SILC_PACKET_COMMAND_REPLY, 0,
319 buffer->data, buffer->len, FALSE);
320 silc_buffer_free(buffer);
323 /* Sends command status reply with one extra argument. The argument
324 type must be sent as argument. */
327 silc_server_command_send_status_data(SilcServerCommandContext cmd,
329 SilcCommandStatus status,
330 unsigned int arg_type,
332 unsigned int arg_len)
336 SILC_LOG_DEBUG(("Sending command status %d", status));
338 buffer = silc_command_reply_payload_encode_va(command, status, 0, 1,
339 arg_type, arg, arg_len);
340 silc_server_packet_send(cmd->server, cmd->sock,
341 SILC_PACKET_COMMAND_REPLY, 0,
342 buffer->data, buffer->len, FALSE);
343 silc_buffer_free(buffer);
346 /******************************************************************************
350 ******************************************************************************/
353 silc_server_command_whois_parse(SilcServerCommandContext cmd,
354 SilcClientID ***client_id,
355 unsigned int *client_id_count,
363 unsigned int argc = silc_argument_get_arg_num(cmd->args);
366 /* If client ID is in the command it must be used instead of nickname */
367 tmp = silc_argument_get_arg_type(cmd->args, 3, &len);
369 /* No ID, get the nickname@server string and parse it. */
370 tmp = silc_argument_get_arg_type(cmd->args, 1, NULL);
372 if (strchr(tmp, '@')) {
373 len = strcspn(tmp, "@");
374 *nickname = silc_calloc(len + 1, sizeof(char));
375 memcpy(*nickname, tmp, len);
376 *server_name = silc_calloc(strlen(tmp) - len, sizeof(char));
377 memcpy(*server_name, tmp + len + 1, strlen(tmp) - len - 1);
379 *nickname = strdup(tmp);
382 silc_server_command_send_status_reply(cmd, command,
383 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
387 /* Command includes ID, we must use that. Also check whether the command
388 has more than one ID set - take them all. */
390 *client_id = silc_calloc(1, sizeof(**client_id));
391 (*client_id)[0] = silc_id_payload_parse_id(tmp, len);
392 if ((*client_id)[0] == NULL) {
393 silc_free(*client_id);
396 *client_id_count = 1;
398 /* Take all ID's from the command packet */
400 for (k = 1, i = 4; i < argc + 1; i++) {
401 tmp = silc_argument_get_arg_type(cmd->args, i, &len);
403 *client_id = silc_realloc(*client_id, sizeof(**client_id) *
404 (*client_id_count + 1));
405 (*client_id)[k] = silc_id_payload_parse_id(tmp, len);
406 if ((*client_id)[k] == NULL) {
407 /* Cleanup all and fail */
408 for (i = 0; i < *client_id_count; i++)
409 silc_free((*client_id)[i]);
410 silc_free(*client_id);
413 (*client_id_count)++;
419 /* Command includes ID, use that */
422 /* Get the max count of reply messages allowed */
423 tmp = silc_argument_get_arg_type(cmd->args, 2, NULL);
433 silc_server_command_whois_check(SilcServerCommandContext cmd,
434 SilcClientEntry *clients,
435 unsigned int clients_count)
437 SilcServer server = cmd->server;
439 SilcClientEntry entry;
441 for (i = 0; i < clients_count; i++) {
444 if (!entry->nickname || !entry->username) {
446 unsigned short old_ident;
451 old_ident = silc_command_get_ident(cmd->payload);
452 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
453 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
455 /* Send WHOIS command */
456 silc_server_packet_send(server, entry->router->connection,
457 SILC_PACKET_COMMAND, cmd->packet->flags,
458 tmpbuf->data, tmpbuf->len, TRUE);
460 /* Reprocess this packet after received reply */
461 silc_server_command_pending(server, SILC_COMMAND_WHOIS,
462 silc_command_get_ident(cmd->payload),
463 silc_server_command_destructor,
464 silc_server_command_whois,
465 silc_server_command_dup(cmd));
468 silc_command_set_ident(cmd->payload, old_ident);
470 silc_buffer_free(tmpbuf);
479 silc_server_command_whois_send_reply(SilcServerCommandContext cmd,
480 SilcClientEntry *clients,
481 unsigned int clients_count)
483 SilcServer server = cmd->server;
485 int i, count = 0, len;
486 SilcBuffer packet, idp;
487 SilcClientEntry entry;
488 SilcCommandStatus status;
489 unsigned short ident = silc_command_get_ident(cmd->payload);
491 status = SILC_STATUS_OK;
492 if (clients_count > 1)
493 status = SILC_STATUS_LIST_START;
495 for (i = 0; i < clients_count; i++) {
498 if (count && i - 1 == count)
501 if (clients_count > 2)
502 status = SILC_STATUS_LIST_ITEM;
504 if (clients_count > 1 && i == clients_count - 1)
505 status = SILC_STATUS_LIST_END;
507 /* Sanity check, however these should never fail. However, as
508 this sanity check has been added here they have failed. */
509 if (!entry->nickname || !entry->username)
512 /* Send WHOIS reply */
513 idp = silc_id_payload_encode(entry->id, SILC_ID_CLIENT);
514 tmp = silc_argument_get_first_arg(cmd->args, NULL);
518 char nh[256], uh[256];
519 unsigned char idle[4];
520 SilcSocketConnection hsock;
522 memset(uh, 0, sizeof(uh));
523 memset(nh, 0, sizeof(nh));
525 strncat(nh, entry->nickname, strlen(entry->nickname));
526 if (!strchr(entry->nickname, '@')) {
528 len = entry->router ? strlen(entry->router->server_name) :
529 strlen(server->server_name);
530 strncat(nh, entry->router ? entry->router->server_name :
531 server->server_name, len);
534 strncat(uh, entry->username, strlen(entry->username));
535 if (!strchr(entry->username, '@')) {
537 hsock = (SilcSocketConnection)entry->connection;
538 len = strlen(hsock->hostname);
539 strncat(uh, hsock->hostname, len);
542 SILC_PUT32_MSB((time(NULL) - entry->data.last_receive), idle);
545 silc_command_reply_payload_encode_va(SILC_COMMAND_WHOIS,
547 2, idp->data, idp->len,
551 strlen(entry->userinfo),
555 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY,
556 0, packet->data, packet->len, FALSE);
558 silc_buffer_free(packet);
559 silc_buffer_free(idp);
564 silc_server_command_whois_from_client(SilcServerCommandContext cmd)
566 SilcServer server = cmd->server;
567 char *nick = NULL, *server_name = NULL;
568 int count = 0, clients_count = 0;
569 SilcClientEntry *clients = NULL, entry;
570 SilcClientID **client_id = NULL;
571 unsigned int client_id_count = 0;
574 /* Protocol dictates that we must always send the received WHOIS request
575 to our router if we are normal server, so let's do it now unless we
576 are standalone. We will not send any replies to the client until we
577 have received reply from the router. */
578 if (server->server_type == SILC_SERVER &&
579 !cmd->pending && !server->standalone) {
581 unsigned short old_ident;
583 old_ident = silc_command_get_ident(cmd->payload);
584 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
585 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
587 /* Send WHOIS command to our router */
588 silc_server_packet_send(server, (SilcSocketConnection)
589 server->router->connection,
590 SILC_PACKET_COMMAND, cmd->packet->flags,
591 tmpbuf->data, tmpbuf->len, TRUE);
593 /* Reprocess this packet after received reply from router */
594 silc_server_command_pending(server, SILC_COMMAND_WHOIS,
595 silc_command_get_ident(cmd->payload),
596 silc_server_command_destructor,
597 silc_server_command_whois,
598 silc_server_command_dup(cmd));
601 silc_command_set_ident(cmd->payload, old_ident);
603 silc_buffer_free(tmpbuf);
608 /* We are ready to process the command request. Let's search for the
609 requested client and send reply to the requesting client. */
611 /* Parse the whois request */
612 if (!silc_server_command_whois_parse(cmd, &client_id, &client_id_count,
613 &nick, &server_name, &count,
617 /* Get all clients matching that ID or nickname from local list */
618 if (client_id_count) {
619 /* Check all Client ID's received in the command packet */
620 for (i = 0; i < client_id_count; i++) {
621 entry = silc_idlist_find_client_by_id(server->local_list,
624 clients = silc_realloc(clients, sizeof(*clients) *
625 (clients_count + 1));
626 clients[clients_count++] = entry;
630 clients = silc_idlist_get_clients_by_nickname(server->local_list,
635 /* Check global list as well */
637 if (client_id_count) {
638 /* Check all Client ID's received in the command packet */
639 for (i = 0; i < client_id_count; i++) {
640 entry = silc_idlist_find_client_by_id(server->global_list,
643 clients = silc_realloc(clients, sizeof(*clients) *
644 (clients_count + 1));
645 clients[clients_count++] = entry;
649 clients = silc_idlist_get_clients_by_nickname(server->global_list,
656 /* Such client(s) really does not exist in the SILC network. */
657 if (!client_id_count) {
658 silc_server_command_send_status_data(cmd, SILC_COMMAND_WHOIS,
659 SILC_STATUS_ERR_NO_SUCH_NICK,
660 3, nick, strlen(nick));
662 SilcBuffer idp = silc_id_payload_encode(client_id[0], SILC_ID_CLIENT);
663 silc_server_command_send_status_data(cmd, SILC_COMMAND_WHOIS,
664 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID,
665 2, idp->data, idp->len);
666 silc_buffer_free(idp);
671 /* Router always finds the client entry if it exists in the SILC network.
672 However, it might be incomplete entry and does not include all the
673 mandatory fields that WHOIS command reply requires. Check for these and
674 make query from the server who owns the client if some fields are
676 if (!silc_server_command_whois_check(cmd, clients, clients_count)) {
681 /* Send the command reply to the client */
682 silc_server_command_whois_send_reply(cmd, clients, clients_count);
685 if (client_id_count) {
686 for (i = 0; i < client_id_count; i++)
687 silc_free(client_id[i]);
688 silc_free(client_id);
695 silc_free(server_name);
701 silc_server_command_whois_from_server(SilcServerCommandContext cmd)
703 SilcServer server = cmd->server;
704 char *nick = NULL, *server_name = NULL;
705 int count = 0, clients_count = 0;
706 SilcClientEntry *clients = NULL, entry;
707 SilcClientID **client_id = NULL;
708 unsigned int client_id_count = 0;
711 /* Parse the whois request */
712 if (!silc_server_command_whois_parse(cmd, &client_id, &client_id_count,
713 &nick, &server_name, &count,
717 /* Process the command request. Let's search for the requested client and
718 send reply to the requesting server. */
720 if (client_id_count) {
721 /* Check all Client ID's received in the command packet */
722 for (i = 0; i < client_id_count; i++) {
723 entry = silc_idlist_find_client_by_id(server->local_list,
726 clients = silc_realloc(clients, sizeof(*clients) *
727 (clients_count + 1));
728 clients[clients_count++] = entry;
732 clients = silc_idlist_get_clients_by_nickname(server->local_list,
736 clients = silc_idlist_get_clients_by_hash(server->local_list,
737 nick, server->md5hash,
741 /* If we are router we will check our global list as well. */
742 if (!clients && server->server_type == SILC_ROUTER) {
743 if (client_id_count) {
744 /* Check all Client ID's received in the command packet */
745 for (i = 0; i < client_id_count; i++) {
746 entry = silc_idlist_find_client_by_id(server->global_list,
749 clients = silc_realloc(clients, sizeof(*clients) *
750 (clients_count + 1));
751 clients[clients_count++] = entry;
755 clients = silc_idlist_get_clients_by_nickname(server->global_list,
759 clients = silc_idlist_get_clients_by_hash(server->global_list,
760 nick, server->md5hash,
766 /* Such a client really does not exist in the SILC network. */
767 if (!client_id_count) {
768 silc_server_command_send_status_data(cmd, SILC_COMMAND_WHOIS,
769 SILC_STATUS_ERR_NO_SUCH_NICK,
770 3, nick, strlen(nick));
772 SilcBuffer idp = silc_id_payload_encode(client_id[0], SILC_ID_CLIENT);
773 silc_server_command_send_status_data(cmd, SILC_COMMAND_WHOIS,
774 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID,
775 2, idp->data, idp->len);
776 silc_buffer_free(idp);
781 /* Router always finds the client entry if it exists in the SILC network.
782 However, it might be incomplete entry and does not include all the
783 mandatory fields that WHOIS command reply requires. Check for these and
784 make query from the server who owns the client if some fields are
786 if (!silc_server_command_whois_check(cmd, clients, clients_count)) {
791 /* Send the command reply to the client */
792 silc_server_command_whois_send_reply(cmd, clients, clients_count);
795 if (client_id_count) {
796 for (i = 0; i < client_id_count; i++)
797 silc_free(client_id[i]);
798 silc_free(client_id);
805 silc_free(server_name);
810 /* Server side of command WHOIS. Processes user's query and sends found
811 results as command replies back to the client. */
813 SILC_SERVER_CMD_FUNC(whois)
815 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
818 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_WHOIS, cmd, 1, 3328);
820 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT)
821 ret = silc_server_command_whois_from_client(cmd);
822 else if ((cmd->sock->type == SILC_SOCKET_TYPE_SERVER) ||
823 (cmd->sock->type == SILC_SOCKET_TYPE_ROUTER))
824 ret = silc_server_command_whois_from_server(cmd);
827 silc_server_command_free(cmd);
830 SILC_SERVER_CMD_FUNC(whowas)
834 /******************************************************************************
838 ******************************************************************************/
840 /* Checks that all mandatory fields are present. If not then send WHOIS
841 request to the server who owns the client. We use WHOIS because we want
842 to get as much information as possible at once. */
845 silc_server_command_identify_check(SilcServerCommandContext cmd,
846 SilcClientEntry *clients,
847 unsigned int clients_count)
849 SilcServer server = cmd->server;
851 SilcClientEntry entry;
853 for (i = 0; i < clients_count; i++) {
856 if (!entry->nickname) {
858 unsigned short old_ident;
863 old_ident = silc_command_get_ident(cmd->payload);
864 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
865 silc_command_set_command(cmd->payload, SILC_COMMAND_WHOIS);
866 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
868 /* Send WHOIS request. We send WHOIS since we're doing the requesting
869 now anyway so make it a good one. */
870 silc_server_packet_send(server, entry->router->connection,
871 SILC_PACKET_COMMAND, cmd->packet->flags,
872 tmpbuf->data, tmpbuf->len, TRUE);
874 /* Reprocess this packet after received reply */
875 silc_server_command_pending(server, SILC_COMMAND_WHOIS,
876 silc_command_get_ident(cmd->payload),
877 silc_server_command_destructor,
878 silc_server_command_identify,
879 silc_server_command_dup(cmd));
883 /* Put old data back to the Command Payload we just changed */
884 silc_command_set_ident(cmd->payload, old_ident);
885 silc_command_set_command(cmd->payload, SILC_COMMAND_IDENTIFY);
887 silc_buffer_free(tmpbuf);
896 silc_server_command_identify_send_reply(SilcServerCommandContext cmd,
897 SilcClientEntry *clients,
898 unsigned int clients_count)
900 SilcServer server = cmd->server;
902 int i, count = 0, len;
903 SilcBuffer packet, idp;
904 SilcClientEntry entry;
905 SilcCommandStatus status;
906 unsigned short ident = silc_command_get_ident(cmd->payload);
908 status = SILC_STATUS_OK;
909 if (clients_count > 1)
910 status = SILC_STATUS_LIST_START;
912 for (i = 0; i < clients_count; i++) {
915 if (count && i - 1 == count)
918 if (clients_count > 2)
919 status = SILC_STATUS_LIST_ITEM;
921 if (clients_count > 1 && i == clients_count - 1)
922 status = SILC_STATUS_LIST_END;
924 /* Send IDENTIFY reply */
925 idp = silc_id_payload_encode(entry->id, SILC_ID_CLIENT);
926 tmp = silc_argument_get_first_arg(cmd->args, NULL);
930 char nh[256], uh[256];
931 SilcSocketConnection hsock;
933 memset(uh, 0, sizeof(uh));
934 memset(nh, 0, sizeof(nh));
936 strncat(nh, entry->nickname, strlen(entry->nickname));
937 if (!strchr(entry->nickname, '@')) {
939 len = entry->router ? strlen(entry->router->server_name) :
940 strlen(server->server_name);
941 strncat(nh, entry->router ? entry->router->server_name :
942 server->server_name, len);
945 if (!entry->username) {
946 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_IDENTIFY,
947 SILC_STATUS_OK, ident, 2,
948 2, idp->data, idp->len,
951 strncat(uh, entry->username, strlen(entry->username));
952 if (!strchr(entry->username, '@')) {
954 hsock = (SilcSocketConnection)entry->connection;
955 len = strlen(hsock->hostname);
956 strncat(uh, hsock->hostname, len);
959 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_IDENTIFY,
960 SILC_STATUS_OK, ident, 3,
961 2, idp->data, idp->len,
966 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY,
967 0, packet->data, packet->len, FALSE);
969 silc_buffer_free(packet);
970 silc_buffer_free(idp);
976 silc_server_command_identify_from_client(SilcServerCommandContext cmd)
978 SilcServer server = cmd->server;
979 char *nick = NULL, *server_name = NULL;
980 int count = 0, clients_count = 0;
981 SilcClientEntry *clients = NULL, entry;
982 SilcClientID **client_id = NULL;
983 unsigned int client_id_count = 0;
986 /* Protocol dictates that we must always send the received IDENTIFY request
987 to our router if we are normal server, so let's do it now unless we
988 are standalone. We will not send any replies to the client until we
989 have received reply from the router. */
990 if (server->server_type == SILC_SERVER &&
991 !cmd->pending && !server->standalone) {
993 unsigned short old_ident;
995 old_ident = silc_command_get_ident(cmd->payload);
996 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
997 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
999 /* Send IDENTIFY command to our router */
1000 silc_server_packet_send(server, (SilcSocketConnection)
1001 server->router->connection,
1002 SILC_PACKET_COMMAND, cmd->packet->flags,
1003 tmpbuf->data, tmpbuf->len, TRUE);
1005 /* Reprocess this packet after received reply from router */
1006 silc_server_command_pending(server, SILC_COMMAND_IDENTIFY,
1007 silc_command_get_ident(cmd->payload),
1008 silc_server_command_destructor,
1009 silc_server_command_identify,
1010 silc_server_command_dup(cmd));
1011 cmd->pending = TRUE;
1013 silc_command_set_ident(cmd->payload, old_ident);
1015 silc_buffer_free(tmpbuf);
1020 /* We are ready to process the command request. Let's search for the
1021 requested client and send reply to the requesting client. */
1023 /* Parse the IDENTIFY request */
1024 if (!silc_server_command_whois_parse(cmd, &client_id, &client_id_count,
1025 &nick, &server_name, &count,
1026 SILC_COMMAND_IDENTIFY))
1029 /* Get all clients matching that ID or nickname from local list */
1030 if (client_id_count) {
1031 /* Check all Client ID's received in the command packet */
1032 for (i = 0; i < client_id_count; i++) {
1033 entry = silc_idlist_find_client_by_id(server->local_list,
1034 client_id[i], NULL);
1036 clients = silc_realloc(clients, sizeof(*clients) *
1037 (clients_count + 1));
1038 clients[clients_count++] = entry;
1042 clients = silc_idlist_get_clients_by_nickname(server->local_list,
1047 /* Check global list as well */
1049 if (client_id_count) {
1050 /* Check all Client ID's received in the command packet */
1051 for (i = 0; i < client_id_count; i++) {
1052 entry = silc_idlist_find_client_by_id(server->global_list,
1053 client_id[i], NULL);
1055 clients = silc_realloc(clients, sizeof(*clients) *
1056 (clients_count + 1));
1057 clients[clients_count++] = entry;
1061 clients = silc_idlist_get_clients_by_nickname(server->global_list,
1068 /* Such a client really does not exist in the SILC network. */
1069 if (!client_id_count) {
1070 silc_server_command_send_status_data(cmd, SILC_COMMAND_IDENTIFY,
1071 SILC_STATUS_ERR_NO_SUCH_NICK,
1072 3, nick, strlen(nick));
1074 SilcBuffer idp = silc_id_payload_encode(client_id[0], SILC_ID_CLIENT);
1075 silc_server_command_send_status_data(cmd, SILC_COMMAND_IDENTIFY,
1076 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID,
1077 2, idp->data, idp->len);
1078 silc_buffer_free(idp);
1083 /* Check that all mandatory fields are present and request those data
1084 from the server who owns the client if necessary. */
1085 if (!silc_server_command_identify_check(cmd, clients, clients_count)) {
1090 /* Send the command reply to the client */
1091 silc_server_command_identify_send_reply(cmd, clients, clients_count);
1094 if (client_id_count) {
1095 for (i = 0; i < client_id_count; i++)
1096 silc_free(client_id[i]);
1097 silc_free(client_id);
1104 silc_free(server_name);
1110 silc_server_command_identify_from_server(SilcServerCommandContext cmd)
1112 SilcServer server = cmd->server;
1113 char *nick = NULL, *server_name = NULL;
1114 int count = 0, clients_count = 0;
1115 SilcClientEntry *clients = NULL, entry;
1116 SilcClientID **client_id = NULL;
1117 unsigned int client_id_count = 0;
1120 /* Parse the IDENTIFY request */
1121 if (!silc_server_command_whois_parse(cmd, &client_id, &client_id_count,
1122 &nick, &server_name, &count,
1123 SILC_COMMAND_IDENTIFY))
1126 /* Process the command request. Let's search for the requested client and
1127 send reply to the requesting server. */
1129 if (client_id_count) {
1130 /* Check all Client ID's received in the command packet */
1131 for (i = 0; i < client_id_count; i++) {
1132 entry = silc_idlist_find_client_by_id(server->local_list,
1133 client_id[i], NULL);
1135 clients = silc_realloc(clients, sizeof(*clients) *
1136 (clients_count + 1));
1137 clients[clients_count++] = entry;
1141 clients = silc_idlist_get_clients_by_nickname(server->local_list,
1145 clients = silc_idlist_get_clients_by_hash(server->local_list,
1146 nick, server->md5hash,
1150 /* If we are router we will check our global list as well. */
1151 if (!clients && server->server_type == SILC_ROUTER) {
1152 if (client_id_count) {
1153 /* Check all Client ID's received in the command packet */
1154 for (i = 0; i < client_id_count; i++) {
1155 entry = silc_idlist_find_client_by_id(server->global_list,
1156 client_id[i], NULL);
1158 clients = silc_realloc(clients, sizeof(*clients) *
1159 (clients_count + 1));
1160 clients[clients_count++] = entry;
1164 clients = silc_idlist_get_clients_by_nickname(server->global_list,
1168 clients = silc_idlist_get_clients_by_hash(server->global_list,
1169 nick, server->md5hash,
1175 /* Such a client really does not exist in the SILC network. */
1176 if (!client_id_count) {
1177 silc_server_command_send_status_data(cmd, SILC_COMMAND_IDENTIFY,
1178 SILC_STATUS_ERR_NO_SUCH_NICK,
1179 3, nick, strlen(nick));
1181 SilcBuffer idp = silc_id_payload_encode(client_id[0], SILC_ID_CLIENT);
1182 silc_server_command_send_status_data(cmd, SILC_COMMAND_IDENTIFY,
1183 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID,
1184 2, idp->data, idp->len);
1185 silc_buffer_free(idp);
1190 /* Check that all mandatory fields are present and request those data
1191 from the server who owns the client if necessary. */
1192 if (!silc_server_command_identify_check(cmd, clients, clients_count)) {
1197 /* Send the command reply */
1198 silc_server_command_identify_send_reply(cmd, clients, clients_count);
1201 if (client_id_count) {
1202 for (i = 0; i < client_id_count; i++)
1203 silc_free(client_id[i]);
1204 silc_free(client_id);
1211 silc_free(server_name);
1216 SILC_SERVER_CMD_FUNC(identify)
1218 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
1221 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_IDENTIFY, cmd, 1, 3328);
1223 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT)
1224 ret = silc_server_command_identify_from_client(cmd);
1225 else if ((cmd->sock->type == SILC_SOCKET_TYPE_SERVER) |
1226 (cmd->sock->type == SILC_SOCKET_TYPE_ROUTER))
1227 ret = silc_server_command_identify_from_server(cmd);
1230 silc_server_command_free(cmd);
1233 /* Checks string for bad characters and returns TRUE if they are found. */
1235 static int silc_server_command_bad_chars(char *nick)
1237 if (strchr(nick, '\\')) return TRUE;
1238 if (strchr(nick, '\"')) return TRUE;
1239 if (strchr(nick, '´')) return TRUE;
1240 if (strchr(nick, '`')) return TRUE;
1241 if (strchr(nick, '\'')) return TRUE;
1242 if (strchr(nick, '*')) return TRUE;
1243 if (strchr(nick, '/')) return TRUE;
1244 if (strchr(nick, '@')) return TRUE;
1249 /* Server side of command NICK. Sets nickname for user. Setting
1250 nickname causes generation of a new client ID for the client. The
1251 new client ID is sent to the client after changing the nickname. */
1253 SILC_SERVER_CMD_FUNC(nick)
1255 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
1256 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
1257 SilcServer server = cmd->server;
1258 SilcBuffer packet, nidp, oidp;
1259 SilcClientID *new_id;
1262 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_NICK, cmd, 1, 1);
1264 /* Check nickname */
1265 nick = silc_argument_get_arg_type(cmd->args, 1, NULL);
1266 if (silc_server_command_bad_chars(nick) == TRUE) {
1267 silc_server_command_send_status_reply(cmd, SILC_COMMAND_NICK,
1268 SILC_STATUS_ERR_BAD_NICKNAME);
1272 /* Create new Client ID */
1273 silc_id_create_client_id(cmd->server->id, cmd->server->rng,
1274 cmd->server->md5hash, nick,
1277 /* Send notify about nickname change to our router. We send the new
1278 ID and ask to replace it with the old one. If we are router the
1279 packet is broadcasted. Send NICK_CHANGE notify. */
1280 if (!server->standalone)
1281 silc_server_send_notify_nick_change(server, server->router->connection,
1282 server->server_type == SILC_SERVER ?
1283 FALSE : TRUE, client->id,
1284 new_id, SILC_ID_CLIENT_LEN);
1286 /* Remove old cache entry */
1287 silc_idcache_del_by_id(server->local_list->clients, SILC_ID_CLIENT,
1290 oidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
1294 memset(client->id, 0, SILC_ID_CLIENT_LEN);
1295 silc_free(client->id);
1298 /* Save the nickname as this client is our local client */
1299 if (client->nickname)
1300 silc_free(client->nickname);
1302 client->nickname = strdup(nick);
1303 client->id = new_id;
1305 /* Update client cache */
1306 silc_idcache_add(server->local_list->clients, client->nickname,
1307 SILC_ID_CLIENT, client->id, (void *)client, TRUE);
1309 nidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
1311 /* Send NICK_CHANGE notify to the client's channels */
1312 silc_server_send_notify_on_channels(server, client,
1313 SILC_NOTIFY_TYPE_NICK_CHANGE, 2,
1314 oidp->data, oidp->len,
1315 nidp->data, nidp->len);
1317 /* Send the new Client ID as reply command back to client */
1318 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_NICK,
1319 SILC_STATUS_OK, 0, 1,
1320 2, nidp->data, nidp->len);
1321 silc_server_packet_send(cmd->server, cmd->sock, SILC_PACKET_COMMAND_REPLY,
1322 0, packet->data, packet->len, FALSE);
1324 silc_buffer_free(packet);
1325 silc_buffer_free(nidp);
1326 silc_buffer_free(oidp);
1329 silc_server_command_free(cmd);
1332 SILC_SERVER_CMD_FUNC(list)
1336 /* Server side of TOPIC command. Sets topic for channel and/or returns
1337 current topic to client. */
1339 SILC_SERVER_CMD_FUNC(topic)
1341 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
1342 SilcServer server = cmd->server;
1343 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
1344 SilcChannelID *channel_id;
1345 SilcChannelEntry channel;
1346 SilcChannelClientEntry chl;
1347 SilcBuffer packet, idp;
1349 unsigned int argc, tmp_len;
1351 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_TOPIC, cmd, 1, 2);
1353 argc = silc_argument_get_arg_num(cmd->args);
1355 /* Get Channel ID */
1356 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
1358 silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
1359 SILC_STATUS_ERR_NO_CHANNEL_ID);
1362 channel_id = silc_id_payload_parse_id(tmp, tmp_len);
1364 silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
1365 SILC_STATUS_ERR_NO_CHANNEL_ID);
1369 /* Check whether the channel exists */
1370 channel = silc_idlist_find_channel_by_id(server->local_list,
1373 silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
1374 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
1380 tmp = silc_argument_get_arg_type(cmd->args, 2, NULL);
1382 silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
1383 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
1387 if (strlen(tmp) > 256) {
1388 silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
1389 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
1393 /* See whether has rights to change topic */
1394 silc_list_start(channel->user_list);
1395 while ((chl = silc_list_get(channel->user_list)) != SILC_LIST_END)
1396 if (chl->client == client)
1399 if (chl->mode == SILC_CHANNEL_UMODE_NONE) {
1400 if (channel->mode & SILC_CHANNEL_MODE_TOPIC) {
1401 silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
1402 SILC_STATUS_ERR_NO_CHANNEL_PRIV);
1407 /* Set the topic for channel */
1409 silc_free(channel->topic);
1410 channel->topic = strdup(tmp);
1412 /* Send TOPIC_SET notify type to the network */
1413 if (!server->standalone)
1414 silc_server_send_notify_topic_set(server, server->router->connection,
1415 server->server_type == SILC_ROUTER ?
1416 TRUE : FALSE, channel, client->id,
1417 SILC_ID_CLIENT_LEN, channel->topic);
1419 idp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
1421 /* Send notify about topic change to all clients on the channel */
1422 silc_server_send_notify_to_channel(server, NULL, channel, TRUE,
1423 SILC_NOTIFY_TYPE_TOPIC_SET, 2,
1424 idp->data, idp->len,
1425 channel->topic, strlen(channel->topic));
1426 silc_buffer_free(idp);
1429 /* Send the topic to client as reply packet */
1430 idp = silc_id_payload_encode(channel_id, SILC_ID_CHANNEL);
1432 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_TOPIC,
1433 SILC_STATUS_OK, 0, 2,
1434 2, idp->data, idp->len,
1436 strlen(channel->topic));
1438 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_TOPIC,
1439 SILC_STATUS_OK, 0, 1,
1440 2, idp->data, idp->len);
1441 silc_server_packet_send(cmd->server, cmd->sock, SILC_PACKET_COMMAND_REPLY,
1442 0, packet->data, packet->len, FALSE);
1444 silc_buffer_free(packet);
1445 silc_buffer_free(idp);
1446 silc_free(channel_id);
1449 silc_server_command_free(cmd);
1452 /* Server side of INVITE command. Invites some client to join some channel. */
1454 SILC_SERVER_CMD_FUNC(invite)
1456 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
1457 SilcServer server = cmd->server;
1458 SilcSocketConnection sock = cmd->sock, dest_sock;
1459 SilcClientEntry sender, dest;
1460 SilcClientID *dest_id;
1461 SilcChannelEntry channel;
1462 SilcChannelID *channel_id;
1467 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_INVITE, cmd, 1, 2);
1469 /* Get destination ID */
1470 tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
1472 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
1473 SILC_STATUS_ERR_NO_CLIENT_ID);
1476 dest_id = silc_id_payload_parse_id(tmp, len);
1478 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
1479 SILC_STATUS_ERR_NO_CLIENT_ID);
1483 /* Get Channel ID */
1484 tmp = silc_argument_get_arg_type(cmd->args, 2, &len);
1486 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
1487 SILC_STATUS_ERR_NO_CHANNEL_ID);
1490 channel_id = silc_id_payload_parse_id(tmp, len);
1492 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
1493 SILC_STATUS_ERR_NO_CHANNEL_ID);
1497 /* Check whether the channel exists */
1498 channel = silc_idlist_find_channel_by_id(server->local_list,
1501 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
1502 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
1506 /* Check whether the sender of this command is on the channel. */
1507 sender = (SilcClientEntry)sock->user_data;
1508 if (!silc_server_client_on_channel(sender, channel)) {
1509 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
1510 SILC_STATUS_ERR_NOT_ON_CHANNEL);
1514 /* Check whether the channel is invite-only channel. If yes then the
1515 sender of this command must be at least channel operator. */
1516 if (channel->mode & SILC_CHANNEL_MODE_INVITE) {
1517 SilcChannelClientEntry chl;
1519 silc_list_start(channel->user_list);
1520 while ((chl = silc_list_get(channel->user_list)) != SILC_LIST_END)
1521 if (chl->client == sender) {
1522 if (chl->mode == SILC_CHANNEL_UMODE_NONE) {
1523 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
1524 SILC_STATUS_ERR_NO_CHANNEL_PRIV);
1531 /* Find the connection data for the destination. If it is local we will
1532 send it directly otherwise we will send it to router for routing. */
1533 dest = silc_idlist_find_client_by_id(server->local_list, dest_id, NULL);
1535 dest_sock = (SilcSocketConnection)dest->connection;
1537 dest_sock = silc_server_route_get(server, dest_id, SILC_ID_CLIENT);
1539 /* Check whether the requested client is already on the channel. */
1540 /* XXX if we are normal server we don't know about global clients on
1541 the channel thus we must request it (USERS command), check from
1542 local cache as well. */
1543 if (silc_server_client_on_channel(dest, channel)) {
1544 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
1545 SILC_STATUS_ERR_USER_ON_CHANNEL);
1549 sidp = silc_id_payload_encode(sender->id, SILC_ID_CLIENT);
1551 /* Send notify to the client that is invited to the channel */
1552 silc_server_send_notify_dest(server, dest_sock, FALSE, dest_id,
1554 SILC_NOTIFY_TYPE_INVITE, 2,
1555 sidp->data, sidp->len, tmp, len);
1557 /* Send command reply */
1558 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
1561 silc_buffer_free(sidp);
1564 silc_server_command_free(cmd);
1569 SilcSocketConnection sock;
1573 /* Quits connection to client. This gets called if client won't
1574 close the connection even when it has issued QUIT command. */
1576 SILC_TASK_CALLBACK(silc_server_command_quit_cb)
1578 QuitInternal q = (QuitInternal)context;
1580 /* Free all client specific data, such as client entry and entires
1581 on channels this client may be on. */
1582 silc_server_free_client_data(q->server, q->sock, q->sock->user_data,
1584 q->sock->user_data = NULL;
1586 /* Close the connection on our side */
1587 silc_server_close_connection(q->server, q->sock);
1589 silc_free(q->signoff);
1593 /* Quits SILC session. This is the normal way to disconnect client. */
1595 SILC_SERVER_CMD_FUNC(quit)
1597 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
1598 SilcServer server = cmd->server;
1599 SilcSocketConnection sock = cmd->sock;
1601 unsigned char *tmp = NULL;
1602 unsigned int len = 0;
1604 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_QUIT, cmd, 0, 1);
1606 /* Get destination ID */
1607 tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
1611 q = silc_calloc(1, sizeof(*q));
1614 q->signoff = tmp ? strdup(tmp) : NULL;
1616 /* We quit the connection with little timeout */
1617 silc_task_register(server->timeout_queue, sock->sock,
1618 silc_server_command_quit_cb, (void *)q,
1619 0, 200000, SILC_TASK_TIMEOUT, SILC_TASK_PRI_LOW);
1621 silc_server_command_free(cmd);
1624 SILC_SERVER_CMD_FUNC(kill)
1628 /* Server side of command INFO. This sends information about us to
1629 the client. If client requested specific server we will send the
1630 command to that server. */
1632 SILC_SERVER_CMD_FUNC(info)
1634 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
1635 SilcServer server = cmd->server;
1636 SilcBuffer packet, idp;
1637 char info_string[256], *dest_server;
1639 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_INFO, cmd, 1, 1);
1641 /* Get server name */
1642 dest_server = silc_argument_get_arg_type(cmd->args, 1, NULL);
1644 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INFO,
1645 SILC_STATUS_ERR_NO_SUCH_SERVER);
1649 if (!strncasecmp(dest_server, server->server_name, strlen(dest_server))) {
1650 /* Send our reply */
1651 memset(info_string, 0, sizeof(info_string));
1652 snprintf(info_string, sizeof(info_string),
1653 "location: %s server: %s admin: %s <%s>",
1654 server->config->admin_info->location,
1655 server->config->admin_info->server_type,
1656 server->config->admin_info->admin_name,
1657 server->config->admin_info->admin_email);
1659 idp = silc_id_payload_encode(server->id, SILC_ID_SERVER);
1661 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_INFO,
1662 SILC_STATUS_OK, 0, 2,
1663 2, idp->data, idp->len,
1665 strlen(info_string));
1666 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
1667 packet->data, packet->len, FALSE);
1669 silc_buffer_free(packet);
1670 silc_buffer_free(idp);
1672 /* Send this command to the requested server */
1674 if (server->server_type == SILC_SERVER && !server->standalone) {
1678 if (server->server_type == SILC_ROUTER) {
1684 silc_server_command_free(cmd);
1687 /* Server side of command PING. This just replies to the ping. */
1689 SILC_SERVER_CMD_FUNC(ping)
1691 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
1692 SilcServer server = cmd->server;
1697 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_INFO, cmd, 1, 2);
1700 tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
1702 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PING,
1703 SILC_STATUS_ERR_NO_SERVER_ID);
1706 id = silc_id_str2id(tmp, len, SILC_ID_SERVER);
1710 if (!SILC_ID_SERVER_COMPARE(id, server->id)) {
1711 /* Send our reply */
1712 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PING,
1715 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PING,
1716 SILC_STATUS_ERR_NO_SUCH_SERVER);
1723 silc_server_command_free(cmd);
1726 /* Assembles USERS command and executes it. This is called when client
1727 joins to a channel and we wan't to send USERS command reply to the
1730 void silc_server_command_send_users(SilcServer server,
1731 SilcSocketConnection sock,
1732 SilcChannelEntry channel,
1735 SilcServerCommandContext cmd;
1736 SilcBuffer buffer, idp;
1737 SilcPacketContext *packet = silc_packet_context_alloc();
1739 SILC_LOG_DEBUG(("Start"));
1741 /* Create USERS command packet and process it. */
1742 idp = silc_id_payload_encode(channel->id, SILC_ID_CHANNEL);
1743 buffer = silc_command_payload_encode_va(SILC_COMMAND_USERS, 0, 1,
1744 1, idp->data, idp->len);
1746 packet->buffer = silc_buffer_copy(buffer);
1747 packet->sock = sock;
1748 packet->type = SILC_PACKET_COMMAND;
1750 cmd = silc_server_command_alloc();
1751 cmd->payload = silc_command_payload_parse(buffer);
1752 if (!cmd->payload) {
1754 silc_buffer_free(buffer);
1755 silc_buffer_free(idp);
1756 silc_packet_context_free(packet);
1759 cmd->args = silc_command_get_args(cmd->payload);
1760 cmd->server = server;
1761 cmd->sock = silc_socket_dup(sock);
1762 cmd->packet = silc_packet_context_dup(packet);
1763 cmd->pending = FALSE;
1766 /* If this function was called from pending command then instead of
1767 processing the command now, register a pending command callback which
1768 will process it after we've received the automatic USERS command
1769 reply which server will send in JOIN. */
1770 silc_server_command_pending(server, SILC_COMMAND_USERS, 0, NULL,
1771 silc_server_command_users, cmd);
1772 cmd->pending = TRUE;
1773 silc_buffer_free(buffer);
1774 silc_buffer_free(idp);
1778 /* Process USERS command. */
1779 silc_server_command_users((void *)cmd);
1781 silc_buffer_free(buffer);
1782 silc_buffer_free(idp);
1783 silc_packet_context_free(packet);
1786 /* Internal routine to join channel. The channel sent to this function
1787 has been either created or resolved from ID lists. This joins the sent
1788 client to the channel. */
1790 static void silc_server_command_join_channel(SilcServer server,
1791 SilcServerCommandContext cmd,
1792 SilcChannelEntry channel,
1793 SilcClientID *client_id,
1797 SilcSocketConnection sock = cmd->sock;
1799 unsigned int tmp_len;
1800 unsigned char *passphrase = NULL, mode[4], tmp2[4];
1801 SilcClientEntry client;
1802 SilcChannelClientEntry chl;
1803 SilcBuffer reply, chidp, clidp, keyp;
1804 unsigned short ident = silc_command_get_ident(cmd->payload);
1806 SILC_LOG_DEBUG(("Start"));
1811 /* Get passphrase */
1812 tmp = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
1814 passphrase = silc_calloc(tmp_len, sizeof(*passphrase));
1815 memcpy(passphrase, tmp, tmp_len);
1819 * Check channel modes
1822 /* Check invite list if channel is invite-only channel */
1823 if (channel->mode & SILC_CHANNEL_MODE_INVITE) {
1824 if (channel->mode & SILC_CHANNEL_MODE_INVITE_LIST) {
1825 /* Invite list is specified. Check whether client is invited in the
1826 list. If not, then check whether it has been invited otherwise. */
1829 /* XXX client must be invited to be able to join the channel */
1833 /* Check ban list if set */
1834 if (channel->mode & SILC_CHANNEL_MODE_BAN) {
1838 /* Check the channel passphrase if set. */
1839 if (channel->mode & SILC_CHANNEL_MODE_PASSPHRASE) {
1840 if (!passphrase || memcmp(channel->mode_data.passphrase, passphrase,
1841 strlen(channel->mode_data.passphrase))) {
1842 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
1843 SILC_STATUS_ERR_BAD_PASSWORD);
1848 /* Check user count limit if set. */
1849 if (channel->mode & SILC_CHANNEL_MODE_ULIMIT) {
1850 if (silc_list_count(channel->user_list) + 1 >
1851 channel->mode_data.user_limit) {
1852 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
1853 SILC_STATUS_ERR_CHANNEL_IS_FULL);
1859 * Client is allowed to join to the channel. Make it happen.
1862 /* Get the client entry */
1863 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT) {
1864 client = (SilcClientEntry)sock->user_data;
1866 client = silc_idlist_find_client_by_id(server->local_list, client_id,
1869 /* XXX actually this is useless since router finds always cell's
1870 local clients from its local lists. */
1871 client = silc_idlist_find_client_by_id(server->global_list, client_id,
1878 /* Check whether the client already is on the channel */
1879 if (silc_server_client_on_channel(client, channel)) {
1880 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
1881 SILC_STATUS_ERR_USER_ON_CHANNEL);
1885 /* Generate new channel key as protocol dictates */
1886 if ((!created && silc_list_count(channel->user_list) > 0) ||
1887 !channel->channel_key)
1888 silc_server_create_channel_key(server, channel, 0);
1890 /* Send the channel key. This is broadcasted to the channel but is not
1891 sent to the client who is joining to the channel. */
1892 silc_server_send_channel_key(server, NULL, channel,
1893 server->server_type == SILC_ROUTER ?
1894 FALSE : !server->standalone);
1896 /* Join the client to the channel by adding it to channel's user list.
1897 Add also the channel to client entry's channels list for fast cross-
1899 chl = silc_calloc(1, sizeof(*chl));
1901 chl->client = client;
1902 chl->channel = channel;
1903 silc_list_add(channel->user_list, chl);
1904 silc_list_add(client->channels, chl);
1906 /* Encode Client ID Payload of the original client who wants to join */
1907 clidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
1909 /* Encode command reply packet */
1910 chidp = silc_id_payload_encode(channel->id, SILC_ID_CHANNEL);
1911 SILC_PUT32_MSB(channel->mode, mode);
1912 SILC_PUT32_MSB(created, tmp2);
1913 tmp = silc_id_id2str(channel->id, SILC_ID_CHANNEL);
1914 keyp = silc_channel_key_payload_encode(SILC_ID_CHANNEL_LEN, tmp,
1915 strlen(channel->channel_key->
1917 channel->channel_key->cipher->name,
1918 channel->key_len / 8, channel->key);
1920 if (!channel->topic) {
1922 silc_command_reply_payload_encode_va(SILC_COMMAND_JOIN,
1923 SILC_STATUS_OK, ident, 5,
1924 2, channel->channel_name,
1925 strlen(channel->channel_name),
1926 3, chidp->data, chidp->len,
1929 6, keyp->data, keyp->len);
1932 silc_command_reply_payload_encode_va(SILC_COMMAND_JOIN,
1933 SILC_STATUS_OK, ident, 6,
1934 2, channel->channel_name,
1935 strlen(channel->channel_name),
1936 3, chidp->data, chidp->len,
1939 6, keyp->data, keyp->len,
1941 strlen(channel->topic));
1944 /* Send command reply */
1945 silc_server_packet_send(server, sock, SILC_PACKET_COMMAND_REPLY, 0,
1946 reply->data, reply->len, FALSE);
1948 if (!cmd->pending) {
1949 /* Send JOIN notify to locally connected clients on the channel */
1950 silc_server_send_notify_to_channel(server, NULL, channel, FALSE,
1951 SILC_NOTIFY_TYPE_JOIN, 2,
1952 clidp->data, clidp->len,
1953 chidp->data, chidp->len);
1955 /* Send JOIN notify packet to our primary router */
1956 if (!server->standalone)
1957 silc_server_send_notify_join(server, server->router->connection,
1958 server->server_type == SILC_ROUTER ?
1959 TRUE : FALSE, channel, client->id,
1960 SILC_ID_CLIENT_LEN);
1963 /* Send USERS command reply to the joined channel so the user sees who
1964 is currently on the channel. */
1965 silc_server_command_send_users(server, sock, channel, cmd->pending);
1967 silc_buffer_free(reply);
1968 silc_buffer_free(clidp);
1969 silc_buffer_free(chidp);
1970 silc_buffer_free(keyp);
1974 silc_free(passphrase);
1977 /* Server side of command JOIN. Joins client into requested channel. If
1978 the channel does not exist it will be created. */
1980 SILC_SERVER_CMD_FUNC(join)
1982 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
1983 SilcServer server = cmd->server;
1985 char *tmp, *channel_name = NULL, *cipher, *hmac;
1986 SilcChannelEntry channel;
1987 unsigned int umode = 0;
1988 int created = FALSE;
1989 SilcClientID *client_id;
1991 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_JOIN, cmd, 1, 4);
1993 /* Get channel name */
1994 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
1996 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
1997 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
2002 if (silc_server_command_bad_chars(channel_name) == TRUE) {
2003 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2004 SILC_STATUS_ERR_BAD_CHANNEL);
2005 silc_free(channel_name);
2009 /* Get Client ID of the client who is joining to the channel */
2010 tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
2012 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2013 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
2016 client_id = silc_id_payload_parse_id(tmp, tmp_len);
2018 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2019 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
2023 /* Get cipher and hmac name */
2024 cipher = silc_argument_get_arg_type(cmd->args, 4, NULL);
2025 hmac = silc_argument_get_arg_type(cmd->args, 5, NULL);
2027 /* See if the channel exists */
2028 channel = silc_idlist_find_channel_by_name(server->local_list,
2029 channel_name, NULL);
2031 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT) {
2032 /* If this is coming from client the Client ID in the command packet must
2033 be same as the client's ID. */
2034 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT) {
2035 SilcClientEntry entry = (SilcClientEntry)cmd->sock->user_data;
2036 if (SILC_ID_CLIENT_COMPARE(entry->id, client_id)) {
2037 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2038 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
2044 /* Channel not found */
2046 /* If we are standalone server we don't have a router, we just create
2047 the channel by ourselves. */
2048 if (server->standalone) {
2049 channel = silc_server_create_new_channel(server, server->id, cipher,
2050 hmac, channel_name, TRUE);
2051 umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
2056 /* The channel does not exist on our server. If we are normal server
2057 we will send JOIN command to our router which will handle the
2058 joining procedure (either creates the channel if it doesn't exist
2059 or joins the client to it). */
2060 if (server->server_type == SILC_SERVER) {
2062 unsigned short old_ident;
2064 old_ident = silc_command_get_ident(cmd->payload);
2065 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
2066 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
2068 /* Send JOIN command to our router */
2069 silc_server_packet_send(server, (SilcSocketConnection)
2070 server->router->connection,
2071 SILC_PACKET_COMMAND, cmd->packet->flags,
2072 tmpbuf->data, tmpbuf->len, TRUE);
2074 /* Reprocess this packet after received reply from router */
2075 silc_server_command_pending(server, SILC_COMMAND_JOIN,
2076 silc_command_get_ident(cmd->payload),
2077 silc_server_command_destructor,
2078 silc_server_command_join,
2079 silc_server_command_dup(cmd));
2080 cmd->pending = TRUE;
2084 /* We are router and the channel does not seem exist so we will check
2085 our global list as well for the channel. */
2086 channel = silc_idlist_find_channel_by_name(server->global_list,
2087 channel_name, NULL);
2089 /* Channel really does not exist, create it */
2090 channel = silc_server_create_new_channel(server, server->id, cipher,
2091 hmac, channel_name, TRUE);
2092 umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
2099 /* Channel not found */
2101 /* If the command came from router and/or we are normal server then
2102 something went wrong with the joining as the channel was not found.
2103 We can't do anything else but ignore this. */
2104 if (cmd->sock->type == SILC_SOCKET_TYPE_ROUTER ||
2105 server->server_type == SILC_SERVER)
2108 /* We are router and the channel does not seem exist so we will check
2109 our global list as well for the channel. */
2110 channel = silc_idlist_find_channel_by_name(server->global_list,
2111 channel_name, NULL);
2113 /* Channel really does not exist, create it */
2114 channel = silc_server_create_new_channel(server, server->id, cipher,
2115 hmac, channel_name, TRUE);
2116 umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
2122 /* If the channel does not have global users and is also empty it means the
2123 channel was created globally (by our router) and the client will be the
2124 channel founder and operator. */
2125 if (!channel->global_users && silc_list_count(channel->user_list) == 0) {
2126 umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
2127 created = TRUE; /* Created globally by our router */
2130 /* Join to the channel */
2131 silc_server_command_join_channel(server, cmd, channel, client_id,
2134 silc_free(client_id);
2137 silc_server_command_free(cmd);
2140 /* Server side of command MOTD. Sends server's current "message of the
2141 day" to the client. */
2143 SILC_SERVER_CMD_FUNC(motd)
2145 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2146 SilcServer server = cmd->server;
2150 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_MOTD, cmd, 1, 2);
2152 /* XXX show currently only our motd */
2154 if (server->config && server->config->motd &&
2155 server->config->motd->motd_file) {
2158 motd = silc_file_read(server->config->motd->motd_file, &motd_len);
2163 silc_server_command_send_status_data(cmd, SILC_COMMAND_MOTD,
2169 silc_server_command_send_status_reply(cmd, SILC_COMMAND_MOTD,
2174 silc_server_command_free(cmd);
2177 SILC_SERVER_CMD_FUNC(umode)
2181 /* Checks that client has rights to add or remove channel modes. If any
2182 of the checks fails FALSE is returned. */
2184 int silc_server_check_cmode_rights(SilcChannelEntry channel,
2185 SilcChannelClientEntry client,
2188 int is_op = client->mode & SILC_CHANNEL_UMODE_CHANOP;
2189 int is_fo = client->mode & SILC_CHANNEL_UMODE_CHANFO;
2191 /* Check whether has rights to change anything */
2192 if (!is_op && !is_fo)
2195 /* Check whether has rights to change everything */
2199 /* We know that client is channel operator, check that they are not
2200 changing anything that requires channel founder rights. Rest of the
2201 modes are available automatically for channel operator. */
2203 if (mode & SILC_CHANNEL_MODE_PRIVKEY) {
2204 if (is_op && !is_fo)
2207 if (channel->mode & SILC_CHANNEL_MODE_PRIVKEY) {
2208 if (is_op && !is_fo)
2213 if (mode & SILC_CHANNEL_MODE_PASSPHRASE) {
2214 if (is_op && !is_fo)
2217 if (channel->mode & SILC_CHANNEL_MODE_PASSPHRASE) {
2218 if (is_op && !is_fo)
2223 if (mode & SILC_CHANNEL_MODE_CIPHER) {
2224 if (is_op && !is_fo)
2227 if (channel->mode & SILC_CHANNEL_MODE_CIPHER) {
2228 if (is_op && !is_fo)
2236 /* Server side command of CMODE. Changes channel mode */
2238 SILC_SERVER_CMD_FUNC(cmode)
2240 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2241 SilcServer server = cmd->server;
2242 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
2243 SilcChannelID *channel_id;
2244 SilcChannelEntry channel;
2245 SilcChannelClientEntry chl;
2246 SilcBuffer packet, cidp;
2247 unsigned char *tmp, *tmp_id, *tmp_mask;
2248 unsigned int argc, mode_mask, tmp_len, tmp_len2;
2250 SILC_LOG_DEBUG(("Start"));
2252 argc = silc_argument_get_arg_num(cmd->args);
2254 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2255 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
2259 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2260 SILC_STATUS_ERR_TOO_MANY_PARAMS);
2264 /* Get Channel ID */
2265 tmp_id = silc_argument_get_arg_type(cmd->args, 1, &tmp_len2);
2267 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2268 SILC_STATUS_ERR_NO_CHANNEL_ID);
2271 channel_id = silc_id_payload_parse_id(tmp_id, tmp_len2);
2273 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2274 SILC_STATUS_ERR_NO_CHANNEL_ID);
2278 /* Get the channel mode mask */
2279 tmp_mask = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
2281 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2282 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
2285 SILC_GET32_MSB(mode_mask, tmp_mask);
2287 /* Get channel entry */
2288 channel = silc_idlist_find_channel_by_id(server->local_list,
2291 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2292 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
2296 /* Check whether this client is on the channel */
2297 if (!silc_server_client_on_channel(client, channel)) {
2298 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2299 SILC_STATUS_ERR_NOT_ON_CHANNEL);
2303 /* Get entry to the channel user list */
2304 silc_list_start(channel->user_list);
2305 while ((chl = silc_list_get(channel->user_list)) != SILC_LIST_END)
2306 if (chl->client == client)
2309 /* Check that client has rights to change any requested channel modes */
2310 if (!silc_server_check_cmode_rights(channel, chl, mode_mask)) {
2311 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2312 SILC_STATUS_ERR_NO_CHANNEL_PRIV);
2317 * Check the modes. Modes that requires nothing special operation are
2321 if (mode_mask & SILC_CHANNEL_MODE_PRIVKEY) {
2322 /* Channel uses private keys to protect traffic. Client(s) has set the
2323 key locally they want to use, server does not know that key. */
2324 /* Nothing interesting to do here now */
2326 if (channel->mode & SILC_CHANNEL_MODE_PRIVKEY) {
2327 /* The mode is removed and we need to generate and distribute
2328 new channel key. Clients are not using private channel keys
2329 anymore after this. */
2331 /* XXX Duplicated code, make own function for this!! LEAVE uses this
2334 /* Re-generate channel key */
2335 silc_server_create_channel_key(server, channel, 0);
2337 /* Encode channel key payload to be distributed on the channel */
2339 silc_channel_key_payload_encode(tmp_len2, tmp_id,
2340 strlen(channel->channel_key->
2342 channel->channel_key->cipher->name,
2343 channel->key_len / 8, channel->key);
2345 /* If we are normal server then we will send it to our router. If we
2346 are router we will send it to all local servers that has clients on
2348 if (server->server_type == SILC_SERVER) {
2349 if (!server->standalone)
2350 silc_server_packet_send(server,
2351 cmd->server->router->connection,
2352 SILC_PACKET_CHANNEL_KEY, 0, packet->data,
2358 /* Send to locally connected clients on the channel */
2359 silc_server_packet_send_local_channel(server, channel,
2360 SILC_PACKET_CHANNEL_KEY, 0,
2361 packet->data, packet->len, FALSE);
2362 silc_buffer_free(packet);
2366 if (mode_mask & SILC_CHANNEL_MODE_ULIMIT) {
2367 /* User limit is set on channel */
2368 unsigned int user_limit;
2370 /* Get user limit */
2371 tmp = silc_argument_get_arg_type(cmd->args, 3, NULL);
2373 if (!(channel->mode & SILC_CHANNEL_MODE_ULIMIT)) {
2374 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2375 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
2379 SILC_GET32_MSB(user_limit, tmp);
2380 channel->mode_data.user_limit = user_limit;
2383 if (channel->mode & SILC_CHANNEL_MODE_ULIMIT)
2384 /* User limit mode is unset. Remove user limit */
2385 channel->mode_data.user_limit = 0;
2388 if (mode_mask & SILC_CHANNEL_MODE_PASSPHRASE) {
2389 if (!(channel->mode & SILC_CHANNEL_MODE_PASSPHRASE)) {
2390 /* Passphrase has been set to channel */
2392 /* Get the passphrase */
2393 tmp = silc_argument_get_arg_type(cmd->args, 4, NULL);
2395 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2396 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
2400 /* Save the passphrase */
2401 channel->mode_data.passphrase = strdup(tmp);
2404 if (channel->mode & SILC_CHANNEL_MODE_PASSPHRASE) {
2405 /* Passphrase mode is unset. remove the passphrase */
2406 if (channel->mode_data.passphrase) {
2407 silc_free(channel->mode_data.passphrase);
2408 channel->mode_data.passphrase = NULL;
2413 if (mode_mask & SILC_CHANNEL_MODE_BAN) {
2414 if (!(channel->mode & SILC_CHANNEL_MODE_BAN)) {
2415 /* Ban list is specified for channel */
2418 tmp = silc_argument_get_arg_type(cmd->args, 5, NULL);
2420 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2421 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
2425 /* XXX check that channel founder is not banned */
2427 /* Save the ban list */
2428 channel->mode_data.ban_list = strdup(tmp);
2431 if (channel->mode & SILC_CHANNEL_MODE_BAN) {
2432 /* Ban mode is unset. Remove the entire ban list */
2433 if (channel->mode_data.ban_list) {
2434 silc_free(channel->mode_data.ban_list);
2435 channel->mode_data.ban_list = NULL;
2440 if (mode_mask & SILC_CHANNEL_MODE_INVITE_LIST) {
2441 if (!(channel->mode & SILC_CHANNEL_MODE_INVITE_LIST)) {
2442 /* Invite list is specified for channel */
2444 /* Get invite list */
2445 tmp = silc_argument_get_arg_type(cmd->args, 6, NULL);
2447 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2448 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
2452 /* Save the invite linst */
2453 channel->mode_data.invite_list = strdup(tmp);
2456 if (channel->mode & SILC_CHANNEL_MODE_INVITE_LIST) {
2457 /* Invite list mode is unset. Remove the entire invite list */
2458 if (channel->mode_data.invite_list) {
2459 silc_free(channel->mode_data.invite_list);
2460 channel->mode_data.invite_list = NULL;
2465 if (mode_mask & SILC_CHANNEL_MODE_CIPHER) {
2466 if (!(channel->mode & SILC_CHANNEL_MODE_CIPHER)) {
2467 /* Cipher to use protect the traffic */
2468 unsigned int key_len;
2471 tmp = silc_argument_get_arg_type(cmd->args, 8, NULL);
2473 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2474 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
2478 /* XXX Duplicated code, make own function for this!! */
2480 /* Delete old cipher and allocate the new one */
2481 silc_cipher_free(channel->channel_key);
2482 if (!silc_cipher_alloc(tmp, &channel->channel_key)) {
2483 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2484 SILC_STATUS_ERR_UNKNOWN_ALGORITHM);
2487 key_len = silc_cipher_get_key_len(channel->channel_key) / 8;
2489 /* Re-generate channel key */
2490 silc_server_create_channel_key(server, channel, key_len);
2492 /* Encode channel key payload to be distributed on the channel */
2494 silc_channel_key_payload_encode(tmp_len2, tmp_id,
2495 strlen(channel->channel_key->
2497 channel->channel_key->cipher->name,
2498 channel->key_len / 8, channel->key);
2500 /* If we are normal server then we will send it to our router. If we
2501 are router we will send it to all local servers that has clients on
2503 if (server->server_type == SILC_SERVER) {
2504 if (!server->standalone)
2505 silc_server_packet_send(server,
2506 cmd->server->router->connection,
2507 SILC_PACKET_CHANNEL_KEY, 0, packet->data,
2513 /* Send to locally connected clients on the channel */
2514 silc_server_packet_send_local_channel(server, channel,
2515 SILC_PACKET_CHANNEL_KEY, 0,
2516 packet->data, packet->len, FALSE);
2517 silc_buffer_free(packet);
2520 if (channel->mode & SILC_CHANNEL_MODE_CIPHER) {
2521 /* Cipher mode is unset. Remove the cipher and revert back to
2524 if (channel->mode_data.cipher) {
2525 silc_free(channel->mode_data.cipher);
2526 channel->mode_data.cipher = NULL;
2527 channel->mode_data.key_len = 0;
2530 /* Generate new cipher and key for the channel */
2532 /* XXX Duplicated code, make own function for this!! */
2534 /* Delete old cipher and allocate default one */
2535 silc_cipher_free(channel->channel_key);
2536 if (!channel->cipher)
2537 silc_cipher_alloc("aes-256-cbc", &channel->channel_key);
2539 if (!silc_cipher_alloc(channel->cipher, &channel->channel_key)) {
2540 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2541 SILC_STATUS_ERR_UNKNOWN_ALGORITHM);
2546 /* Re-generate channel key */
2547 silc_server_create_channel_key(server, channel, 0);
2549 /* Encode channel key payload to be distributed on the channel */
2551 silc_channel_key_payload_encode(tmp_len2, tmp_id,
2552 strlen(channel->channel_key->
2554 channel->channel_key->cipher->name,
2555 channel->key_len / 8, channel->key);
2557 /* If we are normal server then we will send it to our router. If we
2558 are router we will send it to all local servers that has clients on
2560 if (server->server_type == SILC_SERVER) {
2561 if (!server->standalone)
2562 silc_server_packet_send(server,
2563 cmd->server->router->connection,
2564 SILC_PACKET_CHANNEL_KEY, 0, packet->data,
2570 /* Send to locally connected clients on the channel */
2571 silc_server_packet_send_local_channel(server, channel,
2572 SILC_PACKET_CHANNEL_KEY, 0,
2573 packet->data, packet->len, FALSE);
2574 silc_buffer_free(packet);
2578 /* Finally, set the mode */
2579 channel->mode = mode_mask;
2581 /* Send CMODE_CHANGE notify */
2582 cidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
2583 silc_server_send_notify_to_channel(server, NULL, channel, FALSE,
2584 SILC_NOTIFY_TYPE_CMODE_CHANGE, 2,
2585 cidp->data, cidp->len,
2588 /* Set CMODE notify type to network */
2589 if (!server->standalone)
2590 silc_server_send_notify_cmode(server, server->router->connection,
2591 server->server_type == SILC_ROUTER ?
2592 TRUE : FALSE, channel,
2593 mode_mask, client->id, SILC_ID_CLIENT_LEN);
2595 /* Send command reply to sender */
2596 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_CMODE,
2597 SILC_STATUS_OK, 0, 1,
2599 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
2600 packet->data, packet->len, FALSE);
2602 silc_buffer_free(packet);
2603 silc_free(channel_id);
2607 silc_server_command_free(cmd);
2610 /* Server side of CUMODE command. Changes client's mode on a channel. */
2612 SILC_SERVER_CMD_FUNC(cumode)
2614 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2615 SilcServer server = cmd->server;
2616 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
2617 SilcChannelID *channel_id;
2618 SilcClientID *client_id;
2619 SilcChannelEntry channel;
2620 SilcClientEntry target_client;
2621 SilcChannelClientEntry chl;
2622 SilcBuffer packet, idp;
2623 unsigned char *tmp_id, *tmp_ch_id, *tmp_mask;
2624 unsigned int target_mask, sender_mask, tmp_len, tmp_ch_len;
2627 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_CUMODE, cmd, 3, 3);
2629 /* Get Channel ID */
2630 tmp_ch_id = silc_argument_get_arg_type(cmd->args, 1, &tmp_ch_len);
2632 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
2633 SILC_STATUS_ERR_NO_CHANNEL_ID);
2636 channel_id = silc_id_payload_parse_id(tmp_ch_id, tmp_ch_len);
2638 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
2639 SILC_STATUS_ERR_NO_CHANNEL_ID);
2643 /* Get channel entry */
2644 channel = silc_idlist_find_channel_by_id(server->local_list,
2647 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
2648 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
2652 /* Check whether sender is on the channel */
2653 if (!silc_server_client_on_channel(client, channel)) {
2654 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
2655 SILC_STATUS_ERR_NOT_ON_CHANNEL);
2659 /* Check that client has rights to change other's rights */
2660 silc_list_start(channel->user_list);
2661 while ((chl = silc_list_get(channel->user_list)) != SILC_LIST_END) {
2662 if (chl->client == client) {
2663 if (!(chl->mode & SILC_CHANNEL_UMODE_CHANFO) &&
2664 !(chl->mode & SILC_CHANNEL_UMODE_CHANOP)) {
2665 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
2666 SILC_STATUS_ERR_NO_CHANNEL_PRIV);
2670 sender_mask = chl->mode;
2675 /* Get the target client's channel mode mask */
2676 tmp_mask = silc_argument_get_arg_type(cmd->args, 2, NULL);
2678 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
2679 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
2682 SILC_GET32_MSB(target_mask, tmp_mask);
2684 /* Get target Client ID */
2685 tmp_id = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
2687 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
2688 SILC_STATUS_ERR_NO_CLIENT_ID);
2691 client_id = silc_id_payload_parse_id(tmp_id, tmp_len);
2693 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
2694 SILC_STATUS_ERR_NO_CLIENT_ID);
2698 /* Get target client's entry */
2699 target_client = silc_idlist_find_client_by_id(server->local_list,
2701 if (!target_client) {
2702 target_client = silc_idlist_find_client_by_id(server->global_list,
2706 /* Check whether target client is on the channel */
2707 if (!silc_server_client_on_channel(target_client, channel)) {
2708 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
2709 SILC_STATUS_ERR_USER_NOT_ON_CHANNEL);
2713 /* Get entry to the channel user list */
2714 silc_list_start(channel->user_list);
2715 while ((chl = silc_list_get(channel->user_list)) != SILC_LIST_END)
2716 if (chl->client == target_client)
2723 /* If the target client is founder, no one else can change their mode
2725 if (chl->mode & SILC_CHANNEL_UMODE_CHANFO && chl->client != target_client) {
2726 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
2727 SILC_STATUS_ERR_NOT_YOU);
2731 if (target_mask & SILC_CHANNEL_UMODE_CHANFO) {
2732 /* Cannot promote anyone to channel founder */
2733 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
2734 SILC_STATUS_ERR_NOT_YOU);
2737 if (chl->mode & SILC_CHANNEL_UMODE_CHANFO) {
2738 if (target_client == client) {
2739 /* Remove channel founder rights from itself */
2740 chl->mode &= ~SILC_CHANNEL_UMODE_CHANFO;
2743 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
2744 SILC_STATUS_ERR_NOT_YOU);
2750 if (target_mask & SILC_CHANNEL_UMODE_CHANOP) {
2751 /* Promote to operator */
2752 if (!(chl->mode & SILC_CHANNEL_UMODE_CHANOP)) {
2753 chl->mode |= SILC_CHANNEL_UMODE_CHANOP;
2757 if (chl->mode & SILC_CHANNEL_UMODE_CHANOP) {
2758 /* Demote to normal user */
2759 chl->mode &= ~SILC_CHANNEL_UMODE_CHANOP;
2764 idp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
2766 /* Send notify to channel, notify only if mode was actually changed. */
2768 silc_server_send_notify_to_channel(server, NULL, channel, FALSE,
2769 SILC_NOTIFY_TYPE_CUMODE_CHANGE, 3,
2770 idp->data, idp->len,
2774 /* Set CUMODE notify type to network */
2775 if (!server->standalone)
2776 silc_server_send_notify_cumode(server, server->router->connection,
2777 server->server_type == SILC_ROUTER ?
2778 TRUE : FALSE, channel,
2779 target_mask, client->id,
2782 SILC_ID_CLIENT_LEN);
2785 /* Send command reply to sender */
2786 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_CUMODE,
2787 SILC_STATUS_OK, 0, 2,
2789 3, tmp_id, tmp_len);
2790 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
2791 packet->data, packet->len, FALSE);
2793 silc_buffer_free(packet);
2794 silc_free(channel_id);
2795 silc_free(client_id);
2796 silc_buffer_free(idp);
2799 silc_server_command_free(cmd);
2802 /* Server side of KICK command. Kicks client out of channel. */
2804 SILC_SERVER_CMD_FUNC(kick)
2806 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2807 SilcServer server = cmd->server;
2808 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
2809 SilcClientEntry target_client;
2810 SilcChannelID *channel_id;
2811 SilcClientID *client_id;
2812 SilcChannelEntry channel;
2813 SilcChannelClientEntry chl;
2815 unsigned int tmp_len;
2816 unsigned char *tmp, *comment;
2818 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_LEAVE, cmd, 1, 3);
2820 /* Get Channel ID */
2821 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
2823 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
2824 SILC_STATUS_ERR_NO_CHANNEL_ID);
2827 channel_id = silc_id_payload_parse_id(tmp, tmp_len);
2829 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
2830 SILC_STATUS_ERR_NO_CHANNEL_ID);
2834 /* Get channel entry */
2835 channel = silc_idlist_find_channel_by_id(server->local_list,
2838 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
2839 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
2843 /* Check whether sender is on the channel */
2844 if (!silc_server_client_on_channel(client, channel)) {
2845 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
2846 SILC_STATUS_ERR_NOT_ON_CHANNEL);
2850 /* Check that the kicker is channel operator or channel founder */
2851 silc_list_start(channel->user_list);
2852 while ((chl = silc_list_get(channel->user_list)) != SILC_LIST_END) {
2853 if (chl->client == client) {
2854 if (chl->mode == SILC_CHANNEL_UMODE_NONE) {
2855 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
2856 SILC_STATUS_ERR_NO_CHANNEL_PRIV);
2863 /* Get target Client ID */
2864 tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
2866 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
2867 SILC_STATUS_ERR_NO_CLIENT_ID);
2870 client_id = silc_id_payload_parse_id(tmp, tmp_len);
2872 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
2873 SILC_STATUS_ERR_NO_CLIENT_ID);
2877 /* Get target client's entry */
2878 target_client = silc_idlist_find_client_by_id(server->local_list,
2880 if (!target_client) {
2881 target_client = silc_idlist_find_client_by_id(server->global_list,
2885 /* Check that the target client is not channel founder. Channel founder
2886 cannot be kicked from the channel. */
2887 silc_list_start(channel->user_list);
2888 while ((chl = silc_list_get(channel->user_list)) != SILC_LIST_END) {
2889 if (chl->client == target_client) {
2890 if (chl->mode & SILC_CHANNEL_UMODE_CHANFO) {
2891 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
2892 SILC_STATUS_ERR_NO_CHANNEL_FOPRIV);
2899 /* Check whether target client is on the channel */
2900 if (!silc_server_client_on_channel(target_client, channel)) {
2901 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
2902 SILC_STATUS_ERR_USER_NOT_ON_CHANNEL);
2908 comment = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
2912 /* Send command reply to sender */
2913 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
2916 /* Send KICKED notify to local clients on the channel */
2917 idp = silc_id_payload_encode(target_client->id, SILC_ID_CLIENT);
2918 silc_server_send_notify_to_channel(server, NULL, channel, FALSE,
2919 SILC_NOTIFY_TYPE_KICKED,
2921 idp->data, idp->len,
2922 comment, comment ? strlen(comment) : 0);
2923 silc_buffer_free(idp);
2925 /* Remove the client from the channel. If the channel does not exist
2926 after removing the client then the client kicked itself of the channel
2927 and we don't have to send anything after that. */
2928 if (!silc_server_remove_from_one_channel(server, NULL, channel,
2929 target_client, FALSE))
2932 /* Send KICKED notify to primary route */
2933 if (!server->standalone)
2934 silc_server_send_notify_kicked(server, server->router->connection,
2935 server->server_type == SILC_ROUTER ?
2936 TRUE : FALSE, channel,
2937 target_client->id, SILC_ID_CLIENT_LEN,
2940 /* Re-generate channel key */
2941 silc_server_create_channel_key(server, channel, 0);
2943 /* Send the channel key to the channel. The key of course is not sent
2944 to the client who joined the channel. */
2945 silc_server_send_channel_key(server, target_client->connection, channel,
2946 server->server_type == SILC_ROUTER ?
2947 FALSE : !server->standalone);
2950 silc_server_command_free(cmd);
2953 SILC_SERVER_CMD_FUNC(oper)
2957 SILC_SERVER_CMD_FUNC(silcoper)
2961 /* Server side command of CONNECT. Connects us to the specified remote
2962 server or router. */
2964 SILC_SERVER_CMD_FUNC(connect)
2966 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2967 SilcServer server = cmd->server;
2968 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
2970 unsigned int tmp_len;
2971 unsigned int port = SILC_PORT;
2973 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_CONNECT, cmd, 1, 2);
2975 if (!client || cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
2978 /* Check whether client has the permissions. */
2979 if (client->mode == SILC_UMODE_NONE) {
2980 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CONNECT,
2981 SILC_STATUS_ERR_NO_SERVER_PRIV);
2985 if (server->server_type == SILC_ROUTER &&
2986 client->mode & SILC_UMODE_SERVER_OPERATOR) {
2987 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CONNECT,
2988 SILC_STATUS_ERR_NO_ROUTER_PRIV);
2992 /* Get the remote server */
2993 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
2995 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CONNECT,
2996 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3001 tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
3003 SILC_GET32_MSB(port, tmp);
3005 /* Create the connection. It is done with timeout and is async. */
3006 silc_server_create_connection(server, tmp, port);
3008 /* Send reply to the sender */
3009 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CONNECT,
3013 silc_server_command_free(cmd);
3016 SILC_SERVER_CMD_FUNC(restart)
3020 /* Server side command of CLOSE. Closes connection to a specified server. */
3022 SILC_SERVER_CMD_FUNC(close)
3024 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
3025 SilcServer server = cmd->server;
3026 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
3027 SilcServerEntry server_entry;
3029 unsigned int tmp_len;
3030 unsigned char *name;
3031 unsigned int port = SILC_PORT;
3033 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_CLOSE, cmd, 1, 2);
3035 if (!client || cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
3038 /* Check whether client has the permissions. */
3039 if (client->mode == SILC_UMODE_NONE) {
3040 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CLOSE,
3041 SILC_STATUS_ERR_NO_SERVER_PRIV);
3045 /* Get the remote server */
3046 name = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
3048 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CLOSE,
3049 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3054 tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
3056 SILC_GET32_MSB(port, tmp);
3058 server_entry = silc_idlist_find_server_by_conn(server->local_list,
3060 if (!server_entry) {
3061 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CLOSE,
3062 SILC_STATUS_ERR_NO_SERVER_ID);
3066 /* Close the connection to the server */
3067 silc_server_free_sock_user_data(server, server_entry->connection);
3068 silc_server_disconnect_remote(server, server_entry->connection,
3069 "Server closed connection: "
3070 "Closed by operator");
3072 /* Send reply to the sender */
3073 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CLOSE,
3077 silc_server_command_free(cmd);
3080 /* Server side command of SHUTDOWN. Shutdowns the server and closes all
3081 active connections. */
3083 SILC_SERVER_CMD_FUNC(shutdown)
3085 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
3086 SilcServer server = cmd->server;
3087 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
3089 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_SHUTDOWN, cmd, 0, 0);
3091 if (!client || cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
3094 /* Check whether client has the permission. */
3095 if (client->mode == SILC_UMODE_NONE) {
3096 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SHUTDOWN,
3097 SILC_STATUS_ERR_NO_SERVER_PRIV);
3101 /* Then, gracefully, or not, bring the server down. */
3102 silc_server_stop(server);
3104 /* Send reply to the sender */
3105 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SHUTDOWN,
3109 silc_server_command_free(cmd);
3112 /* Server side command of LEAVE. Removes client from a channel. */
3114 SILC_SERVER_CMD_FUNC(leave)
3116 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
3117 SilcServer server = cmd->server;
3118 SilcSocketConnection sock = cmd->sock;
3119 SilcClientEntry id_entry = (SilcClientEntry)cmd->sock->user_data;
3121 SilcChannelEntry channel;
3123 unsigned int i, len;
3126 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_LEAVE, cmd, 1, 2);
3128 /* Get Channel ID */
3129 tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
3131 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
3132 SILC_STATUS_ERR_NO_CHANNEL_ID);
3135 id = silc_id_payload_parse_id(tmp, len);
3137 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
3138 SILC_STATUS_ERR_NO_CHANNEL_ID);
3142 /* Get channel entry */
3143 channel = silc_idlist_find_channel_by_id(server->local_list, id, NULL);
3145 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
3146 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
3150 /* Check whether this client is on the channel */
3151 if (!silc_server_client_on_channel(id_entry, channel)) {
3152 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
3153 SILC_STATUS_ERR_NOT_ON_CHANNEL);
3157 /* Notify routers that they should remove this client from their list
3158 of clients on the channel. Send LEAVE notify type. */
3159 if (!server->standalone)
3160 silc_server_send_notify_leave(server, server->router->connection,
3161 server->server_type == SILC_ROUTER ?
3162 TRUE : FALSE, channel, id_entry->id,
3163 SILC_ID_CLIENT_LEN);
3165 /* Remove client from channel */
3166 i = silc_server_remove_from_one_channel(server, sock, channel, id_entry,
3168 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
3171 /* If the channel does not exist anymore we won't send anything */
3175 /* Re-generate channel key */
3176 silc_server_create_channel_key(server, channel, 0);
3178 /* Encode channel key payload to be distributed on the channel */
3180 silc_channel_key_payload_encode(len, tmp,
3181 strlen(channel->channel_key->cipher->name),
3182 channel->channel_key->cipher->name,
3183 channel->key_len / 8, channel->key);
3185 /* If we are normal server then we will send it to our router. If we
3186 are router we will send it to all local servers that has clients on
3188 if (server->server_type == SILC_SERVER) {
3189 if (!server->standalone)
3190 silc_server_packet_send(server,
3191 cmd->server->router->connection,
3192 SILC_PACKET_CHANNEL_KEY, 0, packet->data,
3193 packet->len, FALSE);
3198 /* Send to locally connected clients on the channel */
3199 silc_server_packet_send_local_channel(server, channel,
3200 SILC_PACKET_CHANNEL_KEY, 0,
3201 packet->data, packet->len, FALSE);
3203 silc_buffer_free(packet);
3207 silc_server_command_free(cmd);
3210 /* Server side of command USERS. Resolves clients and their USERS currently
3211 joined on the requested channel. The list of Client ID's and their modes
3212 on the channel is sent back. */
3214 SILC_SERVER_CMD_FUNC(users)
3216 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
3217 SilcServer server = cmd->server;
3218 SilcChannelEntry channel;
3219 SilcChannelClientEntry chl;
3222 unsigned char *channel_id;
3223 unsigned int channel_id_len;
3224 SilcBuffer client_id_list;
3225 SilcBuffer client_mode_list;
3227 unsigned char lc[4];
3228 unsigned int list_count = 0;
3229 unsigned short ident = silc_command_get_ident(cmd->payload);
3231 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_USERS, cmd, 1, 1);
3233 /* Get Channel ID */
3234 channel_id = silc_argument_get_arg_type(cmd->args, 1, &channel_id_len);
3236 silc_server_command_send_status_reply(cmd, SILC_COMMAND_USERS,
3237 SILC_STATUS_ERR_NO_CHANNEL_ID);
3240 id = silc_id_payload_parse_id(channel_id, channel_id_len);
3242 silc_server_command_send_status_reply(cmd, SILC_COMMAND_USERS,
3243 SILC_STATUS_ERR_NO_CHANNEL_ID);
3247 /* If we are server and we don't know about this channel we will send
3248 the command to our router. If we know about the channel then we also
3249 have the list of users already. */
3250 channel = silc_idlist_find_channel_by_id(server->local_list, id, NULL);
3252 if (server->server_type == SILC_SERVER && !server->standalone &&
3256 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
3257 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
3259 /* Send USERS command */
3260 silc_server_packet_send(server, server->router->connection,
3261 SILC_PACKET_COMMAND, cmd->packet->flags,
3262 tmpbuf->data, tmpbuf->len, TRUE);
3264 /* Reprocess this packet after received reply */
3265 silc_server_command_pending(server, SILC_COMMAND_USERS,
3266 silc_command_get_ident(cmd->payload),
3267 silc_server_command_destructor,
3268 silc_server_command_users,
3269 silc_server_command_dup(cmd));
3270 cmd->pending = TRUE;
3271 silc_command_set_ident(cmd->payload, ident);
3273 silc_buffer_free(tmpbuf);
3278 /* We are router and we will check the global list as well. */
3279 channel = silc_idlist_find_channel_by_id(server->global_list, id, NULL);
3281 /* Channel really does not exist */
3282 silc_server_command_send_status_reply(cmd, SILC_COMMAND_USERS,
3283 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
3288 /* Assemble the lists now */
3290 client_id_list = silc_buffer_alloc((SILC_ID_CLIENT_LEN + 4) *
3291 silc_list_count(channel->user_list));
3292 silc_buffer_pull_tail(client_id_list, SILC_BUFFER_END(client_id_list));
3294 silc_buffer_alloc(4 * silc_list_count(channel->user_list));
3295 silc_buffer_pull_tail(client_mode_list, SILC_BUFFER_END(client_mode_list));
3297 silc_list_start(channel->user_list);
3298 while ((chl = silc_list_get(channel->user_list)) != SILC_LIST_END) {
3300 idp = silc_id_payload_encode(chl->client->id, SILC_ID_CLIENT);
3301 silc_buffer_put(client_id_list, idp->data, idp->len);
3302 silc_buffer_pull(client_id_list, idp->len);
3303 silc_buffer_free(idp);
3305 /* Client's mode on channel */
3306 SILC_PUT32_MSB(chl->mode, client_mode_list->data);
3307 silc_buffer_pull(client_mode_list, 4);
3311 silc_buffer_push(client_id_list,
3312 client_id_list->data - client_id_list->head);
3313 silc_buffer_push(client_mode_list,
3314 client_mode_list->data - client_mode_list->head);
3317 SILC_PUT32_MSB(list_count, lc);
3320 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_USERS,
3321 SILC_STATUS_OK, 0, 4,
3322 2, channel_id, channel_id_len,
3324 4, client_id_list->data,
3325 client_id_list->len,
3326 5, client_mode_list->data,
3327 client_mode_list->len);
3328 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
3329 packet->data, packet->len, FALSE);
3331 silc_buffer_free(packet);
3332 silc_buffer_free(client_id_list);
3333 silc_buffer_free(client_mode_list);
3337 silc_server_command_free(cmd);