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 = NULL;
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 name */
2024 cipher = silc_argument_get_arg_type(cmd->args, 4, NULL);
2026 /* See if the channel exists */
2027 channel = silc_idlist_find_channel_by_name(server->local_list,
2028 channel_name, NULL);
2030 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT) {
2031 /* If this is coming from client the Client ID in the command packet must
2032 be same as the client's ID. */
2033 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT) {
2034 SilcClientEntry entry = (SilcClientEntry)cmd->sock->user_data;
2035 if (SILC_ID_CLIENT_COMPARE(entry->id, client_id)) {
2036 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2037 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
2043 /* Channel not found */
2045 /* If we are standalone server we don't have a router, we just create
2046 the channel by ourselves. */
2047 if (server->standalone) {
2048 channel = silc_server_create_new_channel(server, server->id, cipher,
2049 channel_name, TRUE);
2050 umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
2055 /* The channel does not exist on our server. If we are normal server
2056 we will send JOIN command to our router which will handle the
2057 joining procedure (either creates the channel if it doesn't exist
2058 or joins the client to it). */
2059 if (server->server_type == SILC_SERVER) {
2061 unsigned short old_ident;
2063 old_ident = silc_command_get_ident(cmd->payload);
2064 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
2065 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
2067 /* Send JOIN command to our router */
2068 silc_server_packet_send(server, (SilcSocketConnection)
2069 server->router->connection,
2070 SILC_PACKET_COMMAND, cmd->packet->flags,
2071 tmpbuf->data, tmpbuf->len, TRUE);
2073 /* Reprocess this packet after received reply from router */
2074 silc_server_command_pending(server, SILC_COMMAND_JOIN,
2075 silc_command_get_ident(cmd->payload),
2076 silc_server_command_destructor,
2077 silc_server_command_join,
2078 silc_server_command_dup(cmd));
2079 cmd->pending = TRUE;
2083 /* We are router and the channel does not seem exist so we will check
2084 our global list as well for the channel. */
2085 channel = silc_idlist_find_channel_by_name(server->global_list,
2086 channel_name, NULL);
2088 /* Channel really does not exist, create it */
2089 channel = silc_server_create_new_channel(server, server->id, cipher,
2090 channel_name, TRUE);
2091 umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
2098 /* Channel not found */
2100 /* If the command came from router and/or we are normal server then
2101 something went wrong with the joining as the channel was not found.
2102 We can't do anything else but ignore this. */
2103 if (cmd->sock->type == SILC_SOCKET_TYPE_ROUTER ||
2104 server->server_type == SILC_SERVER)
2107 /* We are router and the channel does not seem exist so we will check
2108 our global list as well for the channel. */
2109 channel = silc_idlist_find_channel_by_name(server->global_list,
2110 channel_name, NULL);
2112 /* Channel really does not exist, create it */
2113 channel = silc_server_create_new_channel(server, server->id, cipher,
2114 channel_name, TRUE);
2115 umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
2121 /* If the channel does not have global users and is also empty it means the
2122 channel was created globally (by our router) and the client will be the
2123 channel founder and operator. */
2124 if (!channel->global_users && silc_list_count(channel->user_list) == 0) {
2125 umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
2126 created = TRUE; /* Created globally by our router */
2129 /* Join to the channel */
2130 silc_server_command_join_channel(server, cmd, channel, client_id,
2133 silc_free(client_id);
2136 silc_server_command_free(cmd);
2139 /* Server side of command MOTD. Sends server's current "message of the
2140 day" to the client. */
2142 SILC_SERVER_CMD_FUNC(motd)
2144 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2145 SilcServer server = cmd->server;
2149 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_MOTD, cmd, 1, 2);
2151 /* XXX show currently only our motd */
2153 if (server->config && server->config->motd &&
2154 server->config->motd->motd_file) {
2157 motd = silc_file_read(server->config->motd->motd_file, &motd_len);
2162 silc_server_command_send_status_data(cmd, SILC_COMMAND_MOTD,
2168 silc_server_command_send_status_reply(cmd, SILC_COMMAND_MOTD,
2173 silc_server_command_free(cmd);
2176 SILC_SERVER_CMD_FUNC(umode)
2180 /* Checks that client has rights to add or remove channel modes. If any
2181 of the checks fails FALSE is returned. */
2183 int silc_server_check_cmode_rights(SilcChannelEntry channel,
2184 SilcChannelClientEntry client,
2187 int is_op = client->mode & SILC_CHANNEL_UMODE_CHANOP;
2188 int is_fo = client->mode & SILC_CHANNEL_UMODE_CHANFO;
2190 /* Check whether has rights to change anything */
2191 if (!is_op && !is_fo)
2194 /* Check whether has rights to change everything */
2198 /* We know that client is channel operator, check that they are not
2199 changing anything that requires channel founder rights. Rest of the
2200 modes are available automatically for channel operator. */
2202 if (mode & SILC_CHANNEL_MODE_PRIVKEY) {
2203 if (is_op && !is_fo)
2206 if (channel->mode & SILC_CHANNEL_MODE_PRIVKEY) {
2207 if (is_op && !is_fo)
2212 if (mode & SILC_CHANNEL_MODE_PASSPHRASE) {
2213 if (is_op && !is_fo)
2216 if (channel->mode & SILC_CHANNEL_MODE_PASSPHRASE) {
2217 if (is_op && !is_fo)
2222 if (mode & SILC_CHANNEL_MODE_CIPHER) {
2223 if (is_op && !is_fo)
2226 if (channel->mode & SILC_CHANNEL_MODE_CIPHER) {
2227 if (is_op && !is_fo)
2235 /* Server side command of CMODE. Changes channel mode */
2237 SILC_SERVER_CMD_FUNC(cmode)
2239 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2240 SilcServer server = cmd->server;
2241 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
2242 SilcChannelID *channel_id;
2243 SilcChannelEntry channel;
2244 SilcChannelClientEntry chl;
2245 SilcBuffer packet, cidp;
2246 unsigned char *tmp, *tmp_id, *tmp_mask;
2247 unsigned int argc, mode_mask, tmp_len, tmp_len2;
2249 SILC_LOG_DEBUG(("Start"));
2251 argc = silc_argument_get_arg_num(cmd->args);
2253 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2254 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
2258 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2259 SILC_STATUS_ERR_TOO_MANY_PARAMS);
2263 /* Get Channel ID */
2264 tmp_id = silc_argument_get_arg_type(cmd->args, 1, &tmp_len2);
2266 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2267 SILC_STATUS_ERR_NO_CHANNEL_ID);
2270 channel_id = silc_id_payload_parse_id(tmp_id, tmp_len2);
2272 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2273 SILC_STATUS_ERR_NO_CHANNEL_ID);
2277 /* Get the channel mode mask */
2278 tmp_mask = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
2280 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2281 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
2284 SILC_GET32_MSB(mode_mask, tmp_mask);
2286 /* Get channel entry */
2287 channel = silc_idlist_find_channel_by_id(server->local_list,
2290 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2291 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
2295 /* Check whether this client is on the channel */
2296 if (!silc_server_client_on_channel(client, channel)) {
2297 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2298 SILC_STATUS_ERR_NOT_ON_CHANNEL);
2302 /* Get entry to the channel user list */
2303 silc_list_start(channel->user_list);
2304 while ((chl = silc_list_get(channel->user_list)) != SILC_LIST_END)
2305 if (chl->client == client)
2308 /* Check that client has rights to change any requested channel modes */
2309 if (!silc_server_check_cmode_rights(channel, chl, mode_mask)) {
2310 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2311 SILC_STATUS_ERR_NO_CHANNEL_PRIV);
2316 * Check the modes. Modes that requires nothing special operation are
2320 if (mode_mask & SILC_CHANNEL_MODE_PRIVKEY) {
2321 /* Channel uses private keys to protect traffic. Client(s) has set the
2322 key locally they want to use, server does not know that key. */
2323 /* Nothing interesting to do here now */
2325 if (channel->mode & SILC_CHANNEL_MODE_PRIVKEY) {
2326 /* The mode is removed and we need to generate and distribute
2327 new channel key. Clients are not using private channel keys
2328 anymore after this. */
2330 /* XXX Duplicated code, make own function for this!! LEAVE uses this
2333 /* Re-generate channel key */
2334 silc_server_create_channel_key(server, channel, 0);
2336 /* Encode channel key payload to be distributed on the channel */
2338 silc_channel_key_payload_encode(tmp_len2, tmp_id,
2339 strlen(channel->channel_key->
2341 channel->channel_key->cipher->name,
2342 channel->key_len / 8, channel->key);
2344 /* If we are normal server then we will send it to our router. If we
2345 are router we will send it to all local servers that has clients on
2347 if (server->server_type == SILC_SERVER) {
2348 if (!server->standalone)
2349 silc_server_packet_send(server,
2350 cmd->server->router->connection,
2351 SILC_PACKET_CHANNEL_KEY, 0, packet->data,
2357 /* Send to locally connected clients on the channel */
2358 silc_server_packet_send_local_channel(server, channel,
2359 SILC_PACKET_CHANNEL_KEY, 0,
2360 packet->data, packet->len, FALSE);
2361 silc_buffer_free(packet);
2365 if (mode_mask & SILC_CHANNEL_MODE_ULIMIT) {
2366 /* User limit is set on channel */
2367 unsigned int user_limit;
2369 /* Get user limit */
2370 tmp = silc_argument_get_arg_type(cmd->args, 3, NULL);
2372 if (!(channel->mode & SILC_CHANNEL_MODE_ULIMIT)) {
2373 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2374 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
2378 SILC_GET32_MSB(user_limit, tmp);
2379 channel->mode_data.user_limit = user_limit;
2382 if (channel->mode & SILC_CHANNEL_MODE_ULIMIT)
2383 /* User limit mode is unset. Remove user limit */
2384 channel->mode_data.user_limit = 0;
2387 if (mode_mask & SILC_CHANNEL_MODE_PASSPHRASE) {
2388 if (!(channel->mode & SILC_CHANNEL_MODE_PASSPHRASE)) {
2389 /* Passphrase has been set to channel */
2391 /* Get the passphrase */
2392 tmp = silc_argument_get_arg_type(cmd->args, 4, NULL);
2394 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2395 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
2399 /* Save the passphrase */
2400 channel->mode_data.passphrase = strdup(tmp);
2403 if (channel->mode & SILC_CHANNEL_MODE_PASSPHRASE) {
2404 /* Passphrase mode is unset. remove the passphrase */
2405 if (channel->mode_data.passphrase) {
2406 silc_free(channel->mode_data.passphrase);
2407 channel->mode_data.passphrase = NULL;
2412 if (mode_mask & SILC_CHANNEL_MODE_BAN) {
2413 if (!(channel->mode & SILC_CHANNEL_MODE_BAN)) {
2414 /* Ban list is specified for channel */
2417 tmp = silc_argument_get_arg_type(cmd->args, 5, NULL);
2419 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2420 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
2424 /* XXX check that channel founder is not banned */
2426 /* Save the ban list */
2427 channel->mode_data.ban_list = strdup(tmp);
2430 if (channel->mode & SILC_CHANNEL_MODE_BAN) {
2431 /* Ban mode is unset. Remove the entire ban list */
2432 if (channel->mode_data.ban_list) {
2433 silc_free(channel->mode_data.ban_list);
2434 channel->mode_data.ban_list = NULL;
2439 if (mode_mask & SILC_CHANNEL_MODE_INVITE_LIST) {
2440 if (!(channel->mode & SILC_CHANNEL_MODE_INVITE_LIST)) {
2441 /* Invite list is specified for channel */
2443 /* Get invite list */
2444 tmp = silc_argument_get_arg_type(cmd->args, 6, NULL);
2446 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2447 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
2451 /* Save the invite linst */
2452 channel->mode_data.invite_list = strdup(tmp);
2455 if (channel->mode & SILC_CHANNEL_MODE_INVITE_LIST) {
2456 /* Invite list mode is unset. Remove the entire invite list */
2457 if (channel->mode_data.invite_list) {
2458 silc_free(channel->mode_data.invite_list);
2459 channel->mode_data.invite_list = NULL;
2464 if (mode_mask & SILC_CHANNEL_MODE_CIPHER) {
2465 if (!(channel->mode & SILC_CHANNEL_MODE_CIPHER)) {
2466 /* Cipher to use protect the traffic */
2467 unsigned int key_len = 256;
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 cp = strchr(tmp, ':');
2484 /* XXX Duplicated code, make own function for this!! */
2486 /* Delete old cipher and allocate the new one */
2487 silc_cipher_free(channel->channel_key);
2488 if (!silc_cipher_alloc(tmp, &channel->channel_key)) {
2489 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2490 SILC_STATUS_ERR_UNKNOWN_ALGORITHM);
2498 /* Re-generate channel key */
2499 silc_server_create_channel_key(server, channel, key_len);
2501 /* Encode channel key payload to be distributed on the channel */
2503 silc_channel_key_payload_encode(tmp_len2, tmp_id,
2504 strlen(channel->channel_key->
2506 channel->channel_key->cipher->name,
2507 channel->key_len / 8, channel->key);
2509 /* If we are normal server then we will send it to our router. If we
2510 are router we will send it to all local servers that has clients on
2512 if (server->server_type == SILC_SERVER) {
2513 if (!server->standalone)
2514 silc_server_packet_send(server,
2515 cmd->server->router->connection,
2516 SILC_PACKET_CHANNEL_KEY, 0, packet->data,
2522 /* Send to locally connected clients on the channel */
2523 silc_server_packet_send_local_channel(server, channel,
2524 SILC_PACKET_CHANNEL_KEY, 0,
2525 packet->data, packet->len, FALSE);
2526 silc_buffer_free(packet);
2529 if (channel->mode & SILC_CHANNEL_MODE_CIPHER) {
2530 /* Cipher mode is unset. Remove the cipher and revert back to
2533 if (channel->mode_data.cipher) {
2534 silc_free(channel->mode_data.cipher);
2535 channel->mode_data.cipher = NULL;
2536 channel->mode_data.key_len = 0;
2539 /* Generate new cipher and key for the channel */
2541 /* XXX Duplicated code, make own function for this!! */
2543 /* Delete old cipher and allocate default one */
2544 silc_cipher_free(channel->channel_key);
2545 if (!channel->cipher)
2546 silc_cipher_alloc("aes-256-cbc", &channel->channel_key);
2548 if (!silc_cipher_alloc(channel->cipher, &channel->channel_key)) {
2549 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2550 SILC_STATUS_ERR_UNKNOWN_ALGORITHM);
2555 /* Re-generate channel key */
2556 silc_server_create_channel_key(server, channel, 0);
2558 /* Encode channel key payload to be distributed on the channel */
2560 silc_channel_key_payload_encode(tmp_len2, tmp_id,
2561 strlen(channel->channel_key->
2563 channel->channel_key->cipher->name,
2564 channel->key_len / 8, channel->key);
2566 /* If we are normal server then we will send it to our router. If we
2567 are router we will send it to all local servers that has clients on
2569 if (server->server_type == SILC_SERVER) {
2570 if (!server->standalone)
2571 silc_server_packet_send(server,
2572 cmd->server->router->connection,
2573 SILC_PACKET_CHANNEL_KEY, 0, packet->data,
2579 /* Send to locally connected clients on the channel */
2580 silc_server_packet_send_local_channel(server, channel,
2581 SILC_PACKET_CHANNEL_KEY, 0,
2582 packet->data, packet->len, FALSE);
2583 silc_buffer_free(packet);
2587 /* Finally, set the mode */
2588 channel->mode = mode_mask;
2590 /* Send CMODE_CHANGE notify */
2591 cidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
2592 silc_server_send_notify_to_channel(server, NULL, channel, FALSE,
2593 SILC_NOTIFY_TYPE_CMODE_CHANGE, 2,
2594 cidp->data, cidp->len,
2597 /* Set CMODE notify type to network */
2598 if (!server->standalone)
2599 silc_server_send_notify_cmode(server, server->router->connection,
2600 server->server_type == SILC_ROUTER ?
2601 TRUE : FALSE, channel,
2602 mode_mask, client->id, SILC_ID_CLIENT_LEN);
2604 /* Send command reply to sender */
2605 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_CMODE,
2606 SILC_STATUS_OK, 0, 1,
2608 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
2609 packet->data, packet->len, FALSE);
2611 silc_buffer_free(packet);
2612 silc_free(channel_id);
2616 silc_server_command_free(cmd);
2619 /* Server side of CUMODE command. Changes client's mode on a channel. */
2621 SILC_SERVER_CMD_FUNC(cumode)
2623 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2624 SilcServer server = cmd->server;
2625 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
2626 SilcChannelID *channel_id;
2627 SilcClientID *client_id;
2628 SilcChannelEntry channel;
2629 SilcClientEntry target_client;
2630 SilcChannelClientEntry chl;
2631 SilcBuffer packet, idp;
2632 unsigned char *tmp_id, *tmp_ch_id, *tmp_mask;
2633 unsigned int target_mask, sender_mask, tmp_len, tmp_ch_len;
2636 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_CUMODE, cmd, 3, 3);
2638 /* Get Channel ID */
2639 tmp_ch_id = silc_argument_get_arg_type(cmd->args, 1, &tmp_ch_len);
2641 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
2642 SILC_STATUS_ERR_NO_CHANNEL_ID);
2645 channel_id = silc_id_payload_parse_id(tmp_ch_id, tmp_ch_len);
2647 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
2648 SILC_STATUS_ERR_NO_CHANNEL_ID);
2652 /* Get channel entry */
2653 channel = silc_idlist_find_channel_by_id(server->local_list,
2656 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
2657 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
2661 /* Check whether sender is on the channel */
2662 if (!silc_server_client_on_channel(client, channel)) {
2663 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
2664 SILC_STATUS_ERR_NOT_ON_CHANNEL);
2668 /* Check that client has rights to change other's rights */
2669 silc_list_start(channel->user_list);
2670 while ((chl = silc_list_get(channel->user_list)) != SILC_LIST_END) {
2671 if (chl->client == client) {
2672 if (!(chl->mode & SILC_CHANNEL_UMODE_CHANFO) &&
2673 !(chl->mode & SILC_CHANNEL_UMODE_CHANOP)) {
2674 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
2675 SILC_STATUS_ERR_NO_CHANNEL_PRIV);
2679 sender_mask = chl->mode;
2684 /* Get the target client's channel mode mask */
2685 tmp_mask = silc_argument_get_arg_type(cmd->args, 2, NULL);
2687 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
2688 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
2691 SILC_GET32_MSB(target_mask, tmp_mask);
2693 /* Get target Client ID */
2694 tmp_id = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
2696 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
2697 SILC_STATUS_ERR_NO_CLIENT_ID);
2700 client_id = silc_id_payload_parse_id(tmp_id, tmp_len);
2702 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
2703 SILC_STATUS_ERR_NO_CLIENT_ID);
2707 /* Get target client's entry */
2708 target_client = silc_idlist_find_client_by_id(server->local_list,
2710 if (!target_client) {
2711 target_client = silc_idlist_find_client_by_id(server->global_list,
2715 /* Check whether target client is on the channel */
2716 if (!silc_server_client_on_channel(target_client, channel)) {
2717 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
2718 SILC_STATUS_ERR_USER_NOT_ON_CHANNEL);
2722 /* Get entry to the channel user list */
2723 silc_list_start(channel->user_list);
2724 while ((chl = silc_list_get(channel->user_list)) != SILC_LIST_END)
2725 if (chl->client == target_client)
2732 /* If the target client is founder, no one else can change their mode
2734 if (chl->mode & SILC_CHANNEL_UMODE_CHANFO && chl->client != target_client) {
2735 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
2736 SILC_STATUS_ERR_NOT_YOU);
2740 if (target_mask & SILC_CHANNEL_UMODE_CHANFO) {
2741 /* Cannot promote anyone to channel founder */
2742 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
2743 SILC_STATUS_ERR_NOT_YOU);
2746 if (chl->mode & SILC_CHANNEL_UMODE_CHANFO) {
2747 if (target_client == client) {
2748 /* Remove channel founder rights from itself */
2749 chl->mode &= ~SILC_CHANNEL_UMODE_CHANFO;
2752 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
2753 SILC_STATUS_ERR_NOT_YOU);
2759 if (target_mask & SILC_CHANNEL_UMODE_CHANOP) {
2760 /* Promote to operator */
2761 if (!(chl->mode & SILC_CHANNEL_UMODE_CHANOP)) {
2762 chl->mode |= SILC_CHANNEL_UMODE_CHANOP;
2766 if (chl->mode & SILC_CHANNEL_UMODE_CHANOP) {
2767 /* Demote to normal user */
2768 chl->mode &= ~SILC_CHANNEL_UMODE_CHANOP;
2773 idp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
2775 /* Send notify to channel, notify only if mode was actually changed. */
2777 silc_server_send_notify_to_channel(server, NULL, channel, FALSE,
2778 SILC_NOTIFY_TYPE_CUMODE_CHANGE, 3,
2779 idp->data, idp->len,
2783 /* Set CUMODE notify type to network */
2784 if (!server->standalone)
2785 silc_server_send_notify_cumode(server, server->router->connection,
2786 server->server_type == SILC_ROUTER ?
2787 TRUE : FALSE, channel,
2788 target_mask, client->id,
2791 SILC_ID_CLIENT_LEN);
2794 /* Send command reply to sender */
2795 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_CUMODE,
2796 SILC_STATUS_OK, 0, 2,
2798 3, tmp_id, tmp_len);
2799 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
2800 packet->data, packet->len, FALSE);
2802 silc_buffer_free(packet);
2803 silc_free(channel_id);
2804 silc_free(client_id);
2805 silc_buffer_free(idp);
2808 silc_server_command_free(cmd);
2811 /* Server side of KICK command. Kicks client out of channel. */
2813 SILC_SERVER_CMD_FUNC(kick)
2815 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2816 SilcServer server = cmd->server;
2817 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
2818 SilcClientEntry target_client;
2819 SilcChannelID *channel_id;
2820 SilcClientID *client_id;
2821 SilcChannelEntry channel;
2822 SilcChannelClientEntry chl;
2824 unsigned int tmp_len;
2825 unsigned char *tmp, *comment;
2827 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_LEAVE, cmd, 1, 3);
2829 /* Get Channel ID */
2830 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
2832 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
2833 SILC_STATUS_ERR_NO_CHANNEL_ID);
2836 channel_id = silc_id_payload_parse_id(tmp, tmp_len);
2838 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
2839 SILC_STATUS_ERR_NO_CHANNEL_ID);
2843 /* Get channel entry */
2844 channel = silc_idlist_find_channel_by_id(server->local_list,
2847 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
2848 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
2852 /* Check whether sender is on the channel */
2853 if (!silc_server_client_on_channel(client, channel)) {
2854 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
2855 SILC_STATUS_ERR_NOT_ON_CHANNEL);
2859 /* Check that the kicker is channel operator or channel founder */
2860 silc_list_start(channel->user_list);
2861 while ((chl = silc_list_get(channel->user_list)) != SILC_LIST_END) {
2862 if (chl->client == client) {
2863 if (chl->mode == SILC_CHANNEL_UMODE_NONE) {
2864 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
2865 SILC_STATUS_ERR_NO_CHANNEL_PRIV);
2872 /* Get target Client ID */
2873 tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
2875 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
2876 SILC_STATUS_ERR_NO_CLIENT_ID);
2879 client_id = silc_id_payload_parse_id(tmp, tmp_len);
2881 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
2882 SILC_STATUS_ERR_NO_CLIENT_ID);
2886 /* Get target client's entry */
2887 target_client = silc_idlist_find_client_by_id(server->local_list,
2889 if (!target_client) {
2890 target_client = silc_idlist_find_client_by_id(server->global_list,
2894 /* Check that the target client is not channel founder. Channel founder
2895 cannot be kicked from the channel. */
2896 silc_list_start(channel->user_list);
2897 while ((chl = silc_list_get(channel->user_list)) != SILC_LIST_END) {
2898 if (chl->client == target_client) {
2899 if (chl->mode & SILC_CHANNEL_UMODE_CHANFO) {
2900 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
2901 SILC_STATUS_ERR_NO_CHANNEL_FOPRIV);
2908 /* Check whether target client is on the channel */
2909 if (!silc_server_client_on_channel(target_client, channel)) {
2910 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
2911 SILC_STATUS_ERR_USER_NOT_ON_CHANNEL);
2917 comment = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
2921 /* Send command reply to sender */
2922 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
2925 /* Send KICKED notify to local clients on the channel */
2926 idp = silc_id_payload_encode(target_client->id, SILC_ID_CLIENT);
2927 silc_server_send_notify_to_channel(server, NULL, channel, FALSE,
2928 SILC_NOTIFY_TYPE_KICKED,
2930 idp->data, idp->len,
2931 comment, comment ? strlen(comment) : 0);
2932 silc_buffer_free(idp);
2934 /* Remove the client from the channel. If the channel does not exist
2935 after removing the client then the client kicked itself of the channel
2936 and we don't have to send anything after that. */
2937 if (!silc_server_remove_from_one_channel(server, NULL, channel,
2938 target_client, FALSE))
2941 /* Send KICKED notify to primary route */
2942 if (!server->standalone)
2943 silc_server_send_notify_kicked(server, server->router->connection,
2944 server->server_type == SILC_ROUTER ?
2945 TRUE : FALSE, channel,
2946 target_client->id, SILC_ID_CLIENT_LEN,
2949 /* Re-generate channel key */
2950 silc_server_create_channel_key(server, channel, 0);
2952 /* Send the channel key to the channel. The key of course is not sent
2953 to the client who joined the channel. */
2954 silc_server_send_channel_key(server, target_client->connection, channel,
2955 server->server_type == SILC_ROUTER ?
2956 FALSE : !server->standalone);
2959 silc_server_command_free(cmd);
2962 SILC_SERVER_CMD_FUNC(oper)
2966 SILC_SERVER_CMD_FUNC(silcoper)
2970 /* Server side command of CONNECT. Connects us to the specified remote
2971 server or router. */
2973 SILC_SERVER_CMD_FUNC(connect)
2975 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2976 SilcServer server = cmd->server;
2977 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
2979 unsigned int tmp_len;
2980 unsigned int port = SILC_PORT;
2982 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_CONNECT, cmd, 1, 2);
2984 if (!client || cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
2987 /* Check whether client has the permissions. */
2988 if (client->mode == SILC_UMODE_NONE) {
2989 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CONNECT,
2990 SILC_STATUS_ERR_NO_SERVER_PRIV);
2994 if (server->server_type == SILC_ROUTER &&
2995 client->mode & SILC_UMODE_SERVER_OPERATOR) {
2996 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CONNECT,
2997 SILC_STATUS_ERR_NO_ROUTER_PRIV);
3001 /* Get the remote server */
3002 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
3004 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CONNECT,
3005 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3010 tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
3012 SILC_GET32_MSB(port, tmp);
3014 /* Create the connection. It is done with timeout and is async. */
3015 silc_server_create_connection(server, tmp, port);
3017 /* Send reply to the sender */
3018 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CONNECT,
3022 silc_server_command_free(cmd);
3025 SILC_SERVER_CMD_FUNC(restart)
3029 /* Server side command of CLOSE. Closes connection to a specified server. */
3031 SILC_SERVER_CMD_FUNC(close)
3033 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
3034 SilcServer server = cmd->server;
3035 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
3036 SilcServerEntry server_entry;
3038 unsigned int tmp_len;
3039 unsigned char *name;
3040 unsigned int port = SILC_PORT;
3042 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_CLOSE, cmd, 1, 2);
3044 if (!client || cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
3047 /* Check whether client has the permissions. */
3048 if (client->mode == SILC_UMODE_NONE) {
3049 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CLOSE,
3050 SILC_STATUS_ERR_NO_SERVER_PRIV);
3054 /* Get the remote server */
3055 name = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
3057 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CLOSE,
3058 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3063 tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
3065 SILC_GET32_MSB(port, tmp);
3067 server_entry = silc_idlist_find_server_by_conn(server->local_list,
3069 if (!server_entry) {
3070 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CLOSE,
3071 SILC_STATUS_ERR_NO_SERVER_ID);
3075 /* Close the connection to the server */
3076 silc_server_free_sock_user_data(server, server_entry->connection);
3077 silc_server_disconnect_remote(server, server_entry->connection,
3078 "Server closed connection: "
3079 "Closed by operator");
3081 /* Send reply to the sender */
3082 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CLOSE,
3086 silc_server_command_free(cmd);
3089 /* Server side command of SHUTDOWN. Shutdowns the server and closes all
3090 active connections. */
3092 SILC_SERVER_CMD_FUNC(shutdown)
3094 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
3095 SilcServer server = cmd->server;
3096 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
3098 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_SHUTDOWN, cmd, 0, 0);
3100 if (!client || cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
3103 /* Check whether client has the permission. */
3104 if (client->mode == SILC_UMODE_NONE) {
3105 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SHUTDOWN,
3106 SILC_STATUS_ERR_NO_SERVER_PRIV);
3110 /* Then, gracefully, or not, bring the server down. */
3111 silc_server_stop(server);
3113 /* Send reply to the sender */
3114 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SHUTDOWN,
3118 silc_server_command_free(cmd);
3121 /* Server side command of LEAVE. Removes client from a channel. */
3123 SILC_SERVER_CMD_FUNC(leave)
3125 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
3126 SilcServer server = cmd->server;
3127 SilcSocketConnection sock = cmd->sock;
3128 SilcClientEntry id_entry = (SilcClientEntry)cmd->sock->user_data;
3130 SilcChannelEntry channel;
3132 unsigned int i, len;
3135 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_LEAVE, cmd, 1, 2);
3137 /* Get Channel ID */
3138 tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
3140 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
3141 SILC_STATUS_ERR_NO_CHANNEL_ID);
3144 id = silc_id_payload_parse_id(tmp, len);
3146 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
3147 SILC_STATUS_ERR_NO_CHANNEL_ID);
3151 /* Get channel entry */
3152 channel = silc_idlist_find_channel_by_id(server->local_list, id, NULL);
3154 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
3155 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
3159 /* Check whether this client is on the channel */
3160 if (!silc_server_client_on_channel(id_entry, channel)) {
3161 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
3162 SILC_STATUS_ERR_NOT_ON_CHANNEL);
3166 /* Notify routers that they should remove this client from their list
3167 of clients on the channel. Send LEAVE notify type. */
3168 if (!server->standalone)
3169 silc_server_send_notify_leave(server, server->router->connection,
3170 server->server_type == SILC_ROUTER ?
3171 TRUE : FALSE, channel, id_entry->id,
3172 SILC_ID_CLIENT_LEN);
3174 /* Remove client from channel */
3175 i = silc_server_remove_from_one_channel(server, sock, channel, id_entry,
3177 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
3180 /* If the channel does not exist anymore we won't send anything */
3184 /* Re-generate channel key */
3185 silc_server_create_channel_key(server, channel, 0);
3187 /* Encode channel key payload to be distributed on the channel */
3189 silc_channel_key_payload_encode(len, tmp,
3190 strlen(channel->channel_key->cipher->name),
3191 channel->channel_key->cipher->name,
3192 channel->key_len / 8, channel->key);
3194 /* If we are normal server then we will send it to our router. If we
3195 are router we will send it to all local servers that has clients on
3197 if (server->server_type == SILC_SERVER) {
3198 if (!server->standalone)
3199 silc_server_packet_send(server,
3200 cmd->server->router->connection,
3201 SILC_PACKET_CHANNEL_KEY, 0, packet->data,
3202 packet->len, FALSE);
3207 /* Send to locally connected clients on the channel */
3208 silc_server_packet_send_local_channel(server, channel,
3209 SILC_PACKET_CHANNEL_KEY, 0,
3210 packet->data, packet->len, FALSE);
3212 silc_buffer_free(packet);
3216 silc_server_command_free(cmd);
3219 /* Server side of command USERS. Resolves clients and their USERS currently
3220 joined on the requested channel. The list of Client ID's and their modes
3221 on the channel is sent back. */
3223 SILC_SERVER_CMD_FUNC(users)
3225 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
3226 SilcServer server = cmd->server;
3227 SilcChannelEntry channel;
3228 SilcChannelClientEntry chl;
3231 unsigned char *channel_id;
3232 unsigned int channel_id_len;
3233 SilcBuffer client_id_list;
3234 SilcBuffer client_mode_list;
3236 unsigned char lc[4];
3237 unsigned int list_count = 0;
3238 unsigned short ident = silc_command_get_ident(cmd->payload);
3240 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_USERS, cmd, 1, 1);
3242 /* Get Channel ID */
3243 channel_id = silc_argument_get_arg_type(cmd->args, 1, &channel_id_len);
3245 silc_server_command_send_status_reply(cmd, SILC_COMMAND_USERS,
3246 SILC_STATUS_ERR_NO_CHANNEL_ID);
3249 id = silc_id_payload_parse_id(channel_id, channel_id_len);
3251 silc_server_command_send_status_reply(cmd, SILC_COMMAND_USERS,
3252 SILC_STATUS_ERR_NO_CHANNEL_ID);
3256 /* If we are server and we don't know about this channel we will send
3257 the command to our router. If we know about the channel then we also
3258 have the list of users already. */
3259 channel = silc_idlist_find_channel_by_id(server->local_list, id, NULL);
3261 if (server->server_type == SILC_SERVER && !server->standalone &&
3265 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
3266 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
3268 /* Send USERS command */
3269 silc_server_packet_send(server, server->router->connection,
3270 SILC_PACKET_COMMAND, cmd->packet->flags,
3271 tmpbuf->data, tmpbuf->len, TRUE);
3273 /* Reprocess this packet after received reply */
3274 silc_server_command_pending(server, SILC_COMMAND_USERS,
3275 silc_command_get_ident(cmd->payload),
3276 silc_server_command_destructor,
3277 silc_server_command_users,
3278 silc_server_command_dup(cmd));
3279 cmd->pending = TRUE;
3280 silc_command_set_ident(cmd->payload, ident);
3282 silc_buffer_free(tmpbuf);
3287 /* We are router and we will check the global list as well. */
3288 channel = silc_idlist_find_channel_by_id(server->global_list, id, NULL);
3290 /* Channel really does not exist */
3291 silc_server_command_send_status_reply(cmd, SILC_COMMAND_USERS,
3292 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
3297 /* Assemble the lists now */
3299 client_id_list = silc_buffer_alloc((SILC_ID_CLIENT_LEN + 4) *
3300 silc_list_count(channel->user_list));
3301 silc_buffer_pull_tail(client_id_list, SILC_BUFFER_END(client_id_list));
3303 silc_buffer_alloc(4 * silc_list_count(channel->user_list));
3304 silc_buffer_pull_tail(client_mode_list, SILC_BUFFER_END(client_mode_list));
3306 silc_list_start(channel->user_list);
3307 while ((chl = silc_list_get(channel->user_list)) != SILC_LIST_END) {
3309 idp = silc_id_payload_encode(chl->client->id, SILC_ID_CLIENT);
3310 silc_buffer_put(client_id_list, idp->data, idp->len);
3311 silc_buffer_pull(client_id_list, idp->len);
3312 silc_buffer_free(idp);
3314 /* Client's mode on channel */
3315 SILC_PUT32_MSB(chl->mode, client_mode_list->data);
3316 silc_buffer_pull(client_mode_list, 4);
3320 silc_buffer_push(client_id_list,
3321 client_id_list->data - client_id_list->head);
3322 silc_buffer_push(client_mode_list,
3323 client_mode_list->data - client_mode_list->head);
3326 SILC_PUT32_MSB(list_count, lc);
3329 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_USERS,
3330 SILC_STATUS_OK, 0, 4,
3331 2, channel_id, channel_id_len,
3333 4, client_id_list->data,
3334 client_id_list->len,
3335 5, client_mode_list->data,
3336 client_mode_list->len);
3337 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
3338 packet->data, packet->len, FALSE);
3340 silc_buffer_free(packet);
3341 silc_buffer_free(client_id_list);
3342 silc_buffer_free(client_mode_list);
3346 silc_server_command_free(cmd);