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,
40 SILC_TASK_CALLBACK(silc_server_command_process_timeout);
42 /* Server command list. */
43 SilcServerCommand silc_command_list[] =
45 SILC_SERVER_CMD(whois, WHOIS, SILC_CF_LAG | SILC_CF_REG),
46 SILC_SERVER_CMD(whowas, WHOWAS, SILC_CF_LAG | SILC_CF_REG),
47 SILC_SERVER_CMD(identify, IDENTIFY, SILC_CF_LAG | SILC_CF_REG),
48 SILC_SERVER_CMD(nick, NICK, SILC_CF_LAG_STRICT | SILC_CF_REG),
49 SILC_SERVER_CMD(list, LIST, SILC_CF_LAG_STRICT | SILC_CF_REG),
50 SILC_SERVER_CMD(topic, TOPIC, SILC_CF_LAG | SILC_CF_REG),
51 SILC_SERVER_CMD(invite, INVITE, SILC_CF_LAG | SILC_CF_REG),
52 SILC_SERVER_CMD(quit, QUIT, SILC_CF_LAG | SILC_CF_REG),
53 SILC_SERVER_CMD(kill, KILL, SILC_CF_LAG_STRICT | SILC_CF_REG | SILC_CF_OPER),
54 SILC_SERVER_CMD(info, INFO, SILC_CF_LAG | SILC_CF_REG),
55 SILC_SERVER_CMD(connect, CONNECT,
56 SILC_CF_LAG | SILC_CF_REG | SILC_CF_OPER),
57 SILC_SERVER_CMD(ping, PING, SILC_CF_LAG | SILC_CF_REG),
58 SILC_SERVER_CMD(oper, OPER, SILC_CF_LAG | SILC_CF_REG | SILC_CF_OPER),
59 SILC_SERVER_CMD(join, JOIN, SILC_CF_LAG_STRICT | SILC_CF_REG),
60 SILC_SERVER_CMD(motd, MOTD, SILC_CF_LAG | SILC_CF_REG),
61 SILC_SERVER_CMD(umode, UMODE, SILC_CF_LAG | SILC_CF_REG),
62 SILC_SERVER_CMD(cmode, CMODE, SILC_CF_LAG_STRICT | SILC_CF_REG),
63 SILC_SERVER_CMD(cumode, CUMODE, SILC_CF_LAG | SILC_CF_REG),
64 SILC_SERVER_CMD(kick, KICK, SILC_CF_LAG_STRICT | SILC_CF_REG),
65 SILC_SERVER_CMD(ban, BAN, SILC_CF_LAG_STRICT | SILC_CF_REG),
66 SILC_SERVER_CMD(close, CLOSE,
67 SILC_CF_LAG | SILC_CF_REG | SILC_CF_OPER),
68 SILC_SERVER_CMD(shutdown, SHUTDOWN, SILC_CF_LAG | SILC_CF_REG |
70 SILC_SERVER_CMD(silcoper, SILCOPER,
71 SILC_CF_LAG | SILC_CF_REG | SILC_CF_SILC_OPER),
72 SILC_SERVER_CMD(leave, LEAVE, SILC_CF_LAG_STRICT | SILC_CF_REG),
73 SILC_SERVER_CMD(users, USERS, SILC_CF_LAG | SILC_CF_REG),
74 SILC_SERVER_CMD(getkey, GETKEY, SILC_CF_LAG | SILC_CF_REG),
79 #define SILC_SERVER_COMMAND_CHECK_ARGC(command, context, min, max) \
81 uint32 _argc = silc_argument_get_arg_num(cmd->args); \
83 SILC_LOG_DEBUG(("Start")); \
86 silc_server_command_send_status_reply(cmd, command, \
87 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS); \
88 silc_server_command_free(cmd); \
92 silc_server_command_send_status_reply(cmd, command, \
93 SILC_STATUS_ERR_TOO_MANY_PARAMS); \
94 silc_server_command_free(cmd); \
99 /* Returns TRUE if the connection is registered. Unregistered connections
100 usually cannot send commands hence the check. */
102 static int silc_server_is_registered(SilcServer server,
103 SilcSocketConnection sock,
104 SilcServerCommandContext cmd,
107 SilcIDListData idata = (SilcIDListData)sock->user_data;
108 if (idata->registered)
111 silc_server_command_send_status_reply(cmd, command,
112 SILC_STATUS_ERR_NOT_REGISTERED);
113 silc_server_command_free(cmd);
117 /* Internal context to hold data when executed command with timeout. */
119 SilcServerCommandContext ctx;
120 SilcServerCommand *cmd;
121 } *SilcServerCommandTimeout;
123 /* Timeout callback to process commands with timeout for client. Client's
124 commands are always executed with timeout. */
126 SILC_TASK_CALLBACK(silc_server_command_process_timeout)
128 SilcServerCommandTimeout timeout = (SilcServerCommandTimeout)context;
129 SilcClientEntry client = (SilcClientEntry)timeout->ctx->sock->user_data;
131 /* Update access time */
132 client->last_command = time(NULL);
134 if (!(timeout->cmd->flags & SILC_CF_REG))
135 timeout->cmd->cb(timeout->ctx);
136 else if (silc_server_is_registered(timeout->ctx->server,
140 timeout->cmd->cb(timeout->ctx);
145 /* Processes received command packet. */
147 void silc_server_command_process(SilcServer server,
148 SilcSocketConnection sock,
149 SilcPacketContext *packet)
151 SilcServerCommandContext ctx;
152 SilcServerCommand *cmd;
155 /* Allocate command context. This must be free'd by the
156 command routine receiving it. */
157 ctx = silc_server_command_alloc();
158 ctx->server = server;
159 ctx->sock = silc_socket_dup(sock);
160 ctx->packet = silc_packet_context_dup(packet); /* Save original packet */
162 /* Parse the command payload in the packet */
163 ctx->payload = silc_command_payload_parse(packet->buffer);
165 SILC_LOG_ERROR(("Bad command payload, packet dropped"));
166 silc_buffer_free(packet->buffer);
167 silc_packet_context_free(packet);
168 silc_socket_free(ctx->sock);
172 ctx->args = silc_command_get_args(ctx->payload);
174 /* Get the command */
175 command = silc_command_get(ctx->payload);
176 for (cmd = silc_command_list; cmd->cb; cmd++)
177 if (cmd->cmd == command)
181 silc_server_command_send_status_reply(ctx, command,
182 SILC_STATUS_ERR_UNKNOWN_COMMAND);
183 silc_server_command_free(ctx);
187 /* Execute client's commands always with timeout. Normally they are
188 executed with zero (0) timeout but if client is sending command more
189 frequently than once in 2 seconds, then the timeout may be 0 to 2
191 if (sock->type == SILC_SOCKET_TYPE_CLIENT) {
192 SilcClientEntry client = (SilcClientEntry)sock->user_data;
193 SilcServerCommandTimeout timeout = silc_calloc(1, sizeof(*timeout));
199 if (client->last_command && (time(NULL) - client->last_command) < 2) {
200 client->fast_command++;
203 client->fast_command = ((client->fast_command - 1) <= 0 ? 0 :
204 client->fast_command--);
208 if (!fast && ((cmd->flags & SILC_CF_LAG_STRICT) ||
209 (client->fast_command > 5 && cmd->flags & SILC_CF_LAG)))
210 silc_task_register(server->timeout_queue, sock->sock,
211 silc_server_command_process_timeout,
213 2 - (time(NULL) - client->last_command), 0,
215 SILC_TASK_PRI_NORMAL);
217 silc_task_register(server->timeout_queue, sock->sock,
218 silc_server_command_process_timeout,
222 SILC_TASK_PRI_NORMAL);
226 /* Execute for server */
228 if (!(cmd->flags & SILC_CF_REG))
230 else if (silc_server_is_registered(server, sock, ctx, cmd->cmd))
234 /* Allocate Command Context */
236 SilcServerCommandContext silc_server_command_alloc()
238 SilcServerCommandContext ctx = silc_calloc(1, sizeof(*ctx));
243 /* Free's the command context allocated before executing the command */
245 void silc_server_command_free(SilcServerCommandContext ctx)
248 SILC_LOG_DEBUG(("Command context %p refcnt %d->%d", ctx, ctx->users + 1,
250 if (ctx->users < 1) {
252 silc_command_free_payload(ctx->payload);
254 silc_packet_context_free(ctx->packet);
256 silc_socket_free(ctx->sock); /* Decrease reference counter */
261 /* Duplicate Command Context by adding reference counter. The context won't
262 be free'd untill it hits zero. */
264 SilcServerCommandContext
265 silc_server_command_dup(SilcServerCommandContext ctx)
268 SILC_LOG_DEBUG(("Command context %p refcnt %d->%d", ctx, ctx->users - 1,
273 /* Add new pending command to be executed when reply to a command has been
274 received. The `reply_cmd' is the command that will call the `callback'
275 with `context' when reply has been received. If `ident' is non-zero
276 the `callback' will be executed when received reply with command
277 identifier `ident'. */
279 void silc_server_command_pending(SilcServer server,
280 SilcCommand reply_cmd,
282 SilcServerPendingDestructor destructor,
283 SilcCommandCb callback,
286 SilcServerCommandPending *reply;
288 reply = silc_calloc(1, sizeof(*reply));
289 reply->reply_cmd = reply_cmd;
290 reply->ident = ident;
291 reply->context = context;
292 reply->callback = callback;
293 reply->destructor = destructor;
294 silc_dlist_add(server->pending_commands, reply);
297 /* Deletes pending command by reply command type. */
299 void silc_server_command_pending_del(SilcServer server,
300 SilcCommand reply_cmd,
303 SilcServerCommandPending *r;
305 silc_dlist_start(server->pending_commands);
306 while ((r = silc_dlist_get(server->pending_commands)) != SILC_LIST_END) {
307 if (r->reply_cmd == reply_cmd && r->ident == ident) {
308 silc_dlist_del(server->pending_commands, r);
314 /* Checks for pending commands and marks callbacks to be called from
315 the command reply function. Returns TRUE if there were pending command. */
317 int silc_server_command_pending_check(SilcServer server,
318 SilcServerCommandReplyContext ctx,
322 SilcServerCommandPending *r;
324 silc_dlist_start(server->pending_commands);
325 while ((r = silc_dlist_get(server->pending_commands)) != SILC_LIST_END) {
326 if (r->reply_cmd == command && r->ident == ident) {
327 ctx->context = r->context;
328 ctx->callback = r->callback;
329 ctx->destructor = r->destructor;
338 /* Destructor function for pending callbacks. This is called when using
339 pending commands to free the context given for the pending command. */
341 static void silc_server_command_destructor(void *context)
343 silc_server_command_free((SilcServerCommandContext)context);
346 /* Sends simple status message as command reply packet */
349 silc_server_command_send_status_reply(SilcServerCommandContext cmd,
351 SilcCommandStatus status)
355 SILC_LOG_DEBUG(("Sending command status %d", status));
358 silc_command_reply_payload_encode_va(command, status,
359 silc_command_get_ident(cmd->payload),
361 silc_server_packet_send(cmd->server, cmd->sock,
362 SILC_PACKET_COMMAND_REPLY, 0,
363 buffer->data, buffer->len, FALSE);
364 silc_buffer_free(buffer);
367 /* Sends command status reply with one extra argument. The argument
368 type must be sent as argument. */
371 silc_server_command_send_status_data(SilcServerCommandContext cmd,
373 SilcCommandStatus status,
380 SILC_LOG_DEBUG(("Sending command status %d", status));
383 silc_command_reply_payload_encode_va(command, status,
384 silc_command_get_ident(cmd->payload),
385 1, arg_type, arg, arg_len);
386 silc_server_packet_send(cmd->server, cmd->sock,
387 SILC_PACKET_COMMAND_REPLY, 0,
388 buffer->data, buffer->len, FALSE);
389 silc_buffer_free(buffer);
392 /******************************************************************************
396 ******************************************************************************/
399 silc_server_command_whois_parse(SilcServerCommandContext cmd,
400 SilcClientID ***client_id,
401 uint32 *client_id_count,
409 uint32 argc = silc_argument_get_arg_num(cmd->args);
412 /* If client ID is in the command it must be used instead of nickname */
413 tmp = silc_argument_get_arg_type(cmd->args, 3, &len);
415 /* No ID, get the nickname@server string and parse it. */
416 tmp = silc_argument_get_arg_type(cmd->args, 1, NULL);
418 if (strchr(tmp, '@')) {
419 len = strcspn(tmp, "@");
420 *nickname = silc_calloc(len + 1, sizeof(char));
421 memcpy(*nickname, tmp, len);
422 *server_name = silc_calloc(strlen(tmp) - len, sizeof(char));
423 memcpy(*server_name, tmp + len + 1, strlen(tmp) - len - 1);
425 *nickname = strdup(tmp);
428 silc_server_command_send_status_reply(cmd, command,
429 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
433 /* Command includes ID, we must use that. Also check whether the command
434 has more than one ID set - take them all. */
436 *client_id = silc_calloc(1, sizeof(**client_id));
437 (*client_id)[0] = silc_id_payload_parse_id(tmp, len);
438 if ((*client_id)[0] == NULL) {
439 silc_free(*client_id);
442 *client_id_count = 1;
444 /* Take all ID's from the command packet */
446 for (k = 1, i = 1; i < argc; i++) {
447 tmp = silc_argument_get_arg_type(cmd->args, i + 3, &len);
449 *client_id = silc_realloc(*client_id, sizeof(**client_id) *
450 (*client_id_count + 1));
451 (*client_id)[k] = silc_id_payload_parse_id(tmp, len);
452 if ((*client_id)[k] == NULL) {
453 /* Cleanup all and fail */
454 for (i = 0; i < *client_id_count; i++)
455 silc_free((*client_id)[i]);
456 silc_free(*client_id);
459 (*client_id_count)++;
465 /* Command includes ID, use that */
468 /* Get the max count of reply messages allowed */
469 tmp = silc_argument_get_arg_type(cmd->args, 2, NULL);
479 silc_server_command_whois_check(SilcServerCommandContext cmd,
480 SilcClientEntry *clients,
481 uint32 clients_count)
483 SilcServer server = cmd->server;
485 SilcClientEntry entry;
487 for (i = 0; i < clients_count; i++) {
490 if (!entry || entry->data.registered == FALSE)
493 if (!entry->nickname || !entry->username || !entry->userinfo) {
500 old_ident = silc_command_get_ident(cmd->payload);
501 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
502 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
504 /* Send WHOIS command */
505 silc_server_packet_send(server, entry->router->connection,
506 SILC_PACKET_COMMAND, cmd->packet->flags,
507 tmpbuf->data, tmpbuf->len, TRUE);
509 /* Reprocess this packet after received reply */
510 silc_server_command_pending(server, SILC_COMMAND_WHOIS,
511 silc_command_get_ident(cmd->payload),
512 silc_server_command_destructor,
513 silc_server_command_whois,
514 silc_server_command_dup(cmd));
517 silc_command_set_ident(cmd->payload, old_ident);
519 silc_buffer_free(tmpbuf);
528 silc_server_command_whois_send_reply(SilcServerCommandContext cmd,
529 SilcClientEntry *clients,
530 uint32 clients_count,
533 SilcServer server = cmd->server;
536 SilcBuffer packet, idp, channels;
537 SilcClientEntry entry;
538 SilcCommandStatus status;
539 uint16 ident = silc_command_get_ident(cmd->payload);
540 char nh[128], uh[128];
541 unsigned char idle[4], mode[4];
542 SilcSocketConnection hsock;
545 for (i = 0; i < clients_count; i++)
546 if (clients[i]->data.registered)
549 status = SILC_STATUS_OK;
551 status = SILC_STATUS_LIST_START;
553 for (i = 0, k = 0; i < clients_count; i++) {
556 if (entry->data.registered == FALSE) {
557 if (clients_count == 1) {
558 if (entry->nickname) {
559 silc_server_command_send_status_data(cmd, SILC_COMMAND_WHOIS,
560 SILC_STATUS_ERR_NO_SUCH_NICK,
562 strlen(entry->nickname));
564 SilcBuffer idp = silc_id_payload_encode(entry->id, SILC_ID_CLIENT);
565 silc_server_command_send_status_data(cmd, SILC_COMMAND_WHOIS,
566 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID,
567 2, idp->data, idp->len);
568 silc_buffer_free(idp);
575 status = SILC_STATUS_LIST_ITEM;
577 if (clients_count > 1 && k == clients_count - 1)
578 status = SILC_STATUS_LIST_END;
580 if (count && k - 1 == count)
581 status = SILC_STATUS_LIST_END;
583 if (count && k - 1 > count)
586 /* Sanity check, however these should never fail. However, as
587 this sanity check has been added here they have failed. */
588 if (!entry->nickname || !entry->username || !entry->userinfo)
591 /* Send WHOIS reply */
592 idp = silc_id_payload_encode(entry->id, SILC_ID_CLIENT);
593 tmp = silc_argument_get_first_arg(cmd->args, NULL);
595 memset(uh, 0, sizeof(uh));
596 memset(nh, 0, sizeof(nh));
597 memset(idle, 0, sizeof(idle));
599 strncat(nh, entry->nickname, strlen(entry->nickname));
600 if (!strchr(entry->nickname, '@')) {
602 if (entry->servername) {
603 strncat(nh, entry->servername, strlen(entry->servername));
605 len = entry->router ? strlen(entry->router->server_name) :
606 strlen(server->server_name);
607 strncat(nh, entry->router ? entry->router->server_name :
608 server->server_name, len);
612 strncat(uh, entry->username, strlen(entry->username));
613 if (!strchr(entry->username, '@')) {
615 hsock = (SilcSocketConnection)entry->connection;
616 len = strlen(hsock->hostname);
617 strncat(uh, hsock->hostname, len);
620 channels = silc_server_get_client_channel_list(server, entry);
622 SILC_PUT32_MSB(entry->mode, mode);
624 if (entry->connection) {
625 SILC_PUT32_MSB((time(NULL) - entry->data.last_receive), idle);
629 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_WHOIS,
631 2, idp->data, idp->len,
635 strlen(entry->userinfo),
641 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_WHOIS,
643 2, idp->data, idp->len,
647 strlen(entry->userinfo),
651 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY,
652 0, packet->data, packet->len, FALSE);
654 silc_buffer_free(packet);
655 silc_buffer_free(idp);
657 silc_buffer_free(channels);
664 silc_server_command_whois_from_client(SilcServerCommandContext cmd)
666 SilcServer server = cmd->server;
667 char *nick = NULL, *server_name = NULL;
669 SilcClientEntry *clients = NULL, entry;
670 SilcClientID **client_id = NULL;
671 uint32 client_id_count = 0, clients_count = 0;
674 /* Protocol dictates that we must always send the received WHOIS request
675 to our router if we are normal server, so let's do it now unless we
676 are standalone. We will not send any replies to the client until we
677 have received reply from the router. */
678 if (server->server_type == SILC_SERVER && !cmd->pending &&
679 !server->standalone) {
683 old_ident = silc_command_get_ident(cmd->payload);
684 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
685 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
687 /* Send WHOIS command to our router */
688 silc_server_packet_send(server, (SilcSocketConnection)
689 server->router->connection,
690 SILC_PACKET_COMMAND, cmd->packet->flags,
691 tmpbuf->data, tmpbuf->len, TRUE);
693 /* Reprocess this packet after received reply from router */
694 silc_server_command_pending(server, SILC_COMMAND_WHOIS,
695 silc_command_get_ident(cmd->payload),
696 silc_server_command_destructor,
697 silc_server_command_whois,
698 silc_server_command_dup(cmd));
701 silc_command_set_ident(cmd->payload, old_ident);
703 silc_buffer_free(tmpbuf);
708 /* We are ready to process the command request. Let's search for the
709 requested client and send reply to the requesting client. */
711 /* Parse the whois request */
712 if (!silc_server_command_whois_parse(cmd, &client_id, &client_id_count,
713 &nick, &server_name, &count,
717 /* Get all clients matching that ID or nickname from local list */
718 if (client_id_count) {
719 /* Check all Client ID's received in the command packet */
720 for (i = 0; i < client_id_count; i++) {
721 entry = silc_idlist_find_client_by_id(server->local_list,
724 clients = silc_realloc(clients, sizeof(*clients) *
725 (clients_count + 1));
726 clients[clients_count++] = entry;
730 if (!silc_idlist_get_clients_by_hash(server->local_list,
731 nick, server->md5hash,
732 &clients, &clients_count))
733 silc_idlist_get_clients_by_nickname(server->local_list,
735 &clients, &clients_count);
738 /* Check global list as well */
739 if (client_id_count) {
740 /* Check all Client ID's received in the command packet */
741 for (i = 0; i < client_id_count; i++) {
742 entry = silc_idlist_find_client_by_id(server->global_list,
745 clients = silc_realloc(clients, sizeof(*clients) *
746 (clients_count + 1));
747 clients[clients_count++] = entry;
751 if (!silc_idlist_get_clients_by_hash(server->global_list,
752 nick, server->md5hash,
753 &clients, &clients_count))
754 silc_idlist_get_clients_by_nickname(server->global_list,
756 &clients, &clients_count);
760 /* Such client(s) really does not exist in the SILC network. */
761 if (!client_id_count) {
762 silc_server_command_send_status_data(cmd, SILC_COMMAND_WHOIS,
763 SILC_STATUS_ERR_NO_SUCH_NICK,
764 3, nick, strlen(nick));
766 SilcBuffer idp = silc_id_payload_encode(client_id[0], SILC_ID_CLIENT);
767 silc_server_command_send_status_data(cmd, SILC_COMMAND_WHOIS,
768 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID,
769 2, idp->data, idp->len);
770 silc_buffer_free(idp);
775 /* Router always finds the client entry if it exists in the SILC network.
776 However, it might be incomplete entry and does not include all the
777 mandatory fields that WHOIS command reply requires. Check for these and
778 make query from the server who owns the client if some fields are
780 if (!silc_server_command_whois_check(cmd, clients, clients_count)) {
785 /* Send the command reply to the client */
786 silc_server_command_whois_send_reply(cmd, clients, clients_count,
790 if (client_id_count) {
791 for (i = 0; i < client_id_count; i++)
792 silc_free(client_id[i]);
793 silc_free(client_id);
800 silc_free(server_name);
806 silc_server_command_whois_from_server(SilcServerCommandContext cmd)
808 SilcServer server = cmd->server;
809 char *nick = NULL, *server_name = NULL;
811 SilcClientEntry *clients = NULL, entry;
812 SilcClientID **client_id = NULL;
813 uint32 client_id_count = 0, clients_count = 0;
816 /* Parse the whois request */
817 if (!silc_server_command_whois_parse(cmd, &client_id, &client_id_count,
818 &nick, &server_name, &count,
822 /* Process the command request. Let's search for the requested client and
823 send reply to the requesting server. */
825 if (client_id_count) {
826 /* Check all Client ID's received in the command packet */
827 for (i = 0; i < client_id_count; i++) {
828 entry = silc_idlist_find_client_by_id(server->local_list,
831 clients = silc_realloc(clients, sizeof(*clients) *
832 (clients_count + 1));
833 clients[clients_count++] = entry;
837 if (!silc_idlist_get_clients_by_hash(server->local_list,
838 nick, server->md5hash,
839 &clients, &clients_count))
840 silc_idlist_get_clients_by_nickname(server->local_list,
842 &clients, &clients_count);
845 /* If we are router we will check our global list as well. */
846 if (server->server_type == SILC_ROUTER) {
847 if (client_id_count) {
848 /* Check all Client ID's received in the command packet */
849 for (i = 0; i < client_id_count; i++) {
850 entry = silc_idlist_find_client_by_id(server->global_list,
853 clients = silc_realloc(clients, sizeof(*clients) *
854 (clients_count + 1));
855 clients[clients_count++] = entry;
859 if (!silc_idlist_get_clients_by_hash(server->global_list,
860 nick, server->md5hash,
861 &clients, &clients_count))
862 silc_idlist_get_clients_by_nickname(server->global_list,
864 &clients, &clients_count);
869 /* Such a client really does not exist in the SILC network. */
870 if (!client_id_count) {
871 silc_server_command_send_status_data(cmd, SILC_COMMAND_WHOIS,
872 SILC_STATUS_ERR_NO_SUCH_NICK,
873 3, nick, strlen(nick));
875 SilcBuffer idp = silc_id_payload_encode(client_id[0], SILC_ID_CLIENT);
876 silc_server_command_send_status_data(cmd, SILC_COMMAND_WHOIS,
877 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID,
878 2, idp->data, idp->len);
879 silc_buffer_free(idp);
884 /* Router always finds the client entry if it exists in the SILC network.
885 However, it might be incomplete entry and does not include all the
886 mandatory fields that WHOIS command reply requires. Check for these and
887 make query from the server who owns the client if some fields are
889 if (!silc_server_command_whois_check(cmd, clients, clients_count)) {
894 /* Send the command reply to the client */
895 silc_server_command_whois_send_reply(cmd, clients, clients_count,
899 if (client_id_count) {
900 for (i = 0; i < client_id_count; i++)
901 silc_free(client_id[i]);
902 silc_free(client_id);
909 silc_free(server_name);
914 /* Server side of command WHOIS. Processes user's query and sends found
915 results as command replies back to the client. */
917 SILC_SERVER_CMD_FUNC(whois)
919 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
922 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_WHOIS, cmd, 1, 3328);
924 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT)
925 ret = silc_server_command_whois_from_client(cmd);
926 else if ((cmd->sock->type == SILC_SOCKET_TYPE_SERVER) ||
927 (cmd->sock->type == SILC_SOCKET_TYPE_ROUTER))
928 ret = silc_server_command_whois_from_server(cmd);
931 silc_server_command_free(cmd);
934 /******************************************************************************
938 ******************************************************************************/
941 silc_server_command_whowas_parse(SilcServerCommandContext cmd,
949 tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
951 silc_server_command_send_status_reply(cmd, SILC_COMMAND_WHOWAS,
952 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
956 /* Get the nickname@server string and parse it. */
957 if (strchr(tmp, '@')) {
958 len = strcspn(tmp, "@");
959 *nickname = silc_calloc(len + 1, sizeof(char));
960 memcpy(*nickname, tmp, len);
961 *server_name = silc_calloc(strlen(tmp) - len, sizeof(char));
962 memcpy(*server_name, tmp + len + 1, strlen(tmp) - len - 1);
964 *nickname = strdup(tmp);
966 /* Get the max count of reply messages allowed */
967 tmp = silc_argument_get_arg_type(cmd->args, 2, NULL);
977 silc_server_command_whowas_check(SilcServerCommandContext cmd,
978 SilcClientEntry *clients,
979 uint32 clients_count)
981 SilcServer server = cmd->server;
983 SilcClientEntry entry;
985 for (i = 0; i < clients_count; i++) {
988 if (!entry->nickname || !entry->username) {
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 WHOWAS command */
1000 silc_server_packet_send(server, entry->router->connection,
1001 SILC_PACKET_COMMAND, cmd->packet->flags,
1002 tmpbuf->data, tmpbuf->len, TRUE);
1004 /* Reprocess this packet after received reply */
1005 silc_server_command_pending(server, SILC_COMMAND_WHOWAS,
1006 silc_command_get_ident(cmd->payload),
1007 silc_server_command_destructor,
1008 silc_server_command_whowas,
1009 silc_server_command_dup(cmd));
1010 cmd->pending = TRUE;
1012 silc_command_set_ident(cmd->payload, old_ident);
1014 silc_buffer_free(tmpbuf);
1023 silc_server_command_whowas_send_reply(SilcServerCommandContext cmd,
1024 SilcClientEntry *clients,
1025 uint32 clients_count)
1027 SilcServer server = cmd->server;
1029 int i, count = 0, len;
1030 SilcBuffer packet, idp;
1031 SilcClientEntry entry = NULL;
1032 SilcCommandStatus status;
1033 uint16 ident = silc_command_get_ident(cmd->payload);
1035 char nh[256], uh[256];
1037 status = SILC_STATUS_OK;
1038 if (clients_count > 1)
1039 status = SILC_STATUS_LIST_START;
1041 for (i = 0; i < clients_count; i++) {
1044 /* We will take only clients that are not valid anymore. They are the
1045 ones that are not registered anymore but still have a ID. They
1046 have disconnected us, and thus valid for WHOWAS. */
1047 if (entry->data.registered == TRUE)
1049 if (entry->id == NULL)
1052 if (count && i - 1 == count)
1057 if (clients_count > 2)
1058 status = SILC_STATUS_LIST_ITEM;
1060 if (clients_count > 1 && i == clients_count - 1)
1061 status = SILC_STATUS_LIST_END;
1063 /* Sanity check, however these should never fail. However, as
1064 this sanity check has been added here they have failed. */
1065 if (!entry->nickname || !entry->username)
1068 /* Send WHOWAS reply */
1069 idp = silc_id_payload_encode(entry->id, SILC_ID_CLIENT);
1070 tmp = silc_argument_get_first_arg(cmd->args, NULL);
1072 memset(uh, 0, sizeof(uh));
1073 memset(nh, 0, sizeof(nh));
1075 strncat(nh, entry->nickname, strlen(entry->nickname));
1076 if (!strchr(entry->nickname, '@')) {
1077 strncat(nh, "@", 1);
1078 if (entry->servername) {
1079 strncat(nh, entry->servername, strlen(entry->servername));
1081 len = entry->router ? strlen(entry->router->server_name) :
1082 strlen(server->server_name);
1083 strncat(nh, entry->router ? entry->router->server_name :
1084 server->server_name, len);
1088 strncat(uh, entry->username, strlen(entry->username));
1089 if (!strchr(entry->username, '@')) {
1090 strncat(uh, "@", 1);
1091 strcat(uh, "*private*");
1094 if (entry->userinfo)
1096 silc_command_reply_payload_encode_va(SILC_COMMAND_WHOWAS,
1098 2, idp->data, idp->len,
1102 strlen(entry->userinfo));
1105 silc_command_reply_payload_encode_va(SILC_COMMAND_WHOWAS,
1107 2, idp->data, idp->len,
1111 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY,
1112 0, packet->data, packet->len, FALSE);
1114 silc_buffer_free(packet);
1115 silc_buffer_free(idp);
1118 if (found == FALSE && entry)
1119 silc_server_command_send_status_data(cmd, SILC_COMMAND_WHOWAS,
1120 SILC_STATUS_ERR_NO_SUCH_NICK,
1122 strlen(entry->nickname));
1126 silc_server_command_whowas_from_client(SilcServerCommandContext cmd)
1128 SilcServer server = cmd->server;
1129 char *nick = NULL, *server_name = NULL;
1131 SilcClientEntry *clients = NULL;
1132 uint32 clients_count = 0;
1135 /* Protocol dictates that we must always send the received WHOWAS request
1136 to our router if we are normal server, so let's do it now unless we
1137 are standalone. We will not send any replies to the client until we
1138 have received reply from the router. */
1139 if (server->server_type == SILC_SERVER &&
1140 !cmd->pending && !server->standalone) {
1144 old_ident = silc_command_get_ident(cmd->payload);
1145 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
1146 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
1148 /* Send WHOWAS command to our router */
1149 silc_server_packet_send(server, (SilcSocketConnection)
1150 server->router->connection,
1151 SILC_PACKET_COMMAND, cmd->packet->flags,
1152 tmpbuf->data, tmpbuf->len, TRUE);
1154 /* Reprocess this packet after received reply from router */
1155 silc_server_command_pending(server, SILC_COMMAND_WHOWAS,
1156 silc_command_get_ident(cmd->payload),
1157 silc_server_command_destructor,
1158 silc_server_command_whowas,
1159 silc_server_command_dup(cmd));
1160 cmd->pending = TRUE;
1162 silc_command_set_ident(cmd->payload, old_ident);
1164 silc_buffer_free(tmpbuf);
1169 /* We are ready to process the command request. Let's search for the
1170 requested client and send reply to the requesting client. */
1172 /* Parse the whowas request */
1173 if (!silc_server_command_whowas_parse(cmd, &nick, &server_name, &count))
1176 /* Get all clients matching that nickname from local list */
1177 if (!silc_idlist_get_clients_by_nickname(server->local_list,
1179 &clients, &clients_count))
1180 silc_idlist_get_clients_by_hash(server->local_list,
1181 nick, server->md5hash,
1182 &clients, &clients_count);
1184 /* Check global list as well */
1185 if (!silc_idlist_get_clients_by_nickname(server->global_list,
1187 &clients, &clients_count))
1188 silc_idlist_get_clients_by_hash(server->global_list,
1189 nick, server->md5hash,
1190 &clients, &clients_count);
1192 if (!silc_server_command_whowas_check(cmd, clients, clients_count)) {
1197 /* Send the command reply to the client */
1198 silc_server_command_whowas_send_reply(cmd, clients, clients_count);
1206 silc_free(server_name);
1212 silc_server_command_whowas_from_server(SilcServerCommandContext cmd)
1214 SilcServer server = cmd->server;
1215 char *nick = NULL, *server_name = NULL;
1217 SilcClientEntry *clients = NULL;
1218 uint32 clients_count = 0;
1221 /* Parse the whowas request */
1222 if (!silc_server_command_whowas_parse(cmd, &nick, &server_name, &count))
1225 /* Process the command request. Let's search for the requested client and
1226 send reply to the requesting server. */
1228 if (!silc_idlist_get_clients_by_nickname(server->local_list,
1230 &clients, &clients_count))
1231 silc_idlist_get_clients_by_hash(server->local_list,
1232 nick, server->md5hash,
1233 &clients, &clients_count);
1235 /* If we are router we will check our global list as well. */
1236 if (server->server_type == SILC_ROUTER) {
1237 if (!silc_idlist_get_clients_by_nickname(server->global_list,
1239 &clients, &clients_count))
1240 silc_idlist_get_clients_by_hash(server->global_list,
1241 nick, server->md5hash,
1242 &clients, &clients_count);
1246 /* Such a client really does not exist in the SILC network. */
1247 silc_server_command_send_status_data(cmd, SILC_COMMAND_WHOWAS,
1248 SILC_STATUS_ERR_NO_SUCH_NICK,
1249 3, nick, strlen(nick));
1253 /* Send the command reply to the client */
1254 silc_server_command_whowas_send_reply(cmd, clients, clients_count);
1262 silc_free(server_name);
1267 /* Server side of command WHOWAS. */
1269 SILC_SERVER_CMD_FUNC(whowas)
1271 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
1274 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_WHOWAS, cmd, 1, 2);
1276 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT)
1277 ret = silc_server_command_whowas_from_client(cmd);
1278 else if ((cmd->sock->type == SILC_SOCKET_TYPE_SERVER) ||
1279 (cmd->sock->type == SILC_SOCKET_TYPE_ROUTER))
1280 ret = silc_server_command_whowas_from_server(cmd);
1283 silc_server_command_free(cmd);
1286 /******************************************************************************
1290 ******************************************************************************/
1292 /* Checks that all mandatory fields are present. If not then send WHOIS
1293 request to the server who owns the client. We use WHOIS because we want
1294 to get as much information as possible at once. */
1297 silc_server_command_identify_check(SilcServerCommandContext cmd,
1298 SilcClientEntry *clients,
1299 uint32 clients_count)
1301 SilcServer server = cmd->server;
1303 SilcClientEntry entry;
1305 for (i = 0; i < clients_count; i++) {
1308 if (!entry || entry->data.registered == FALSE)
1311 if (!entry->nickname) {
1318 old_ident = silc_command_get_ident(cmd->payload);
1319 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
1320 silc_command_set_command(cmd->payload, SILC_COMMAND_WHOIS);
1321 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
1323 /* Send WHOIS request. We send WHOIS since we're doing the requesting
1324 now anyway so make it a good one. */
1325 silc_server_packet_send(server, entry->router->connection,
1326 SILC_PACKET_COMMAND, cmd->packet->flags,
1327 tmpbuf->data, tmpbuf->len, TRUE);
1329 /* Reprocess this packet after received reply */
1330 silc_server_command_pending(server, SILC_COMMAND_WHOIS,
1331 silc_command_get_ident(cmd->payload),
1332 silc_server_command_destructor,
1333 silc_server_command_identify,
1334 silc_server_command_dup(cmd));
1336 cmd->pending = TRUE;
1338 /* Put old data back to the Command Payload we just changed */
1339 silc_command_set_ident(cmd->payload, old_ident);
1340 silc_command_set_command(cmd->payload, SILC_COMMAND_IDENTIFY);
1342 silc_buffer_free(tmpbuf);
1351 silc_server_command_identify_send_reply(SilcServerCommandContext cmd,
1352 SilcClientEntry *clients,
1353 uint32 clients_count,
1356 SilcServer server = cmd->server;
1359 SilcBuffer packet, idp;
1360 SilcClientEntry entry;
1361 SilcCommandStatus status;
1362 uint16 ident = silc_command_get_ident(cmd->payload);
1363 char nh[256], uh[256];
1364 SilcSocketConnection hsock;
1367 for (i = 0; i < clients_count; i++)
1368 if (clients[i]->data.registered)
1371 status = SILC_STATUS_OK;
1373 status = SILC_STATUS_LIST_START;
1375 for (i = 0, k = 0; i < clients_count; i++) {
1378 if (entry->data.registered == FALSE) {
1379 if (clients_count == 1) {
1380 SilcBuffer idp = silc_id_payload_encode(entry->id, SILC_ID_CLIENT);
1381 silc_server_command_send_status_data(cmd, SILC_COMMAND_IDENTIFY,
1382 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID,
1383 2, idp->data, idp->len);
1384 silc_buffer_free(idp);
1390 status = SILC_STATUS_LIST_ITEM;
1392 if (clients_count > 1 && k == clients_count - 1)
1393 status = SILC_STATUS_LIST_END;
1395 if (count && k - 1 == count)
1396 status = SILC_STATUS_LIST_END;
1398 if (count && k - 1 > count)
1401 /* Send IDENTIFY reply */
1402 idp = silc_id_payload_encode(entry->id, SILC_ID_CLIENT);
1403 tmp = silc_argument_get_first_arg(cmd->args, NULL);
1405 memset(uh, 0, sizeof(uh));
1406 memset(nh, 0, sizeof(nh));
1408 strncat(nh, entry->nickname, strlen(entry->nickname));
1409 if (!strchr(entry->nickname, '@')) {
1410 strncat(nh, "@", 1);
1411 if (entry->servername) {
1412 strncat(nh, entry->servername, strlen(entry->servername));
1414 len = entry->router ? strlen(entry->router->server_name) :
1415 strlen(server->server_name);
1416 strncat(nh, entry->router ? entry->router->server_name :
1417 server->server_name, len);
1421 if (!entry->username) {
1422 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_IDENTIFY,
1424 2, idp->data, idp->len,
1427 strncat(uh, entry->username, strlen(entry->username));
1428 if (!strchr(entry->username, '@')) {
1429 strncat(uh, "@", 1);
1430 hsock = (SilcSocketConnection)entry->connection;
1431 len = strlen(hsock->hostname);
1432 strncat(uh, hsock->hostname, len);
1435 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_IDENTIFY,
1437 2, idp->data, idp->len,
1442 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY,
1443 0, packet->data, packet->len, FALSE);
1445 silc_buffer_free(packet);
1446 silc_buffer_free(idp);
1453 silc_server_command_identify_from_client(SilcServerCommandContext cmd)
1455 SilcServer server = cmd->server;
1456 char *nick = NULL, *server_name = NULL;
1458 SilcClientEntry *clients = NULL, entry;
1459 SilcClientID **client_id = NULL;
1460 uint32 client_id_count = 0, clients_count = 0;
1463 /* Protocol dictates that we must always send the received IDENTIFY request
1464 to our router if we are normal server, so let's do it now unless we
1465 are standalone. We will not send any replies to the client until we
1466 have received reply from the router. */
1467 if (server->server_type == SILC_SERVER &&
1468 !cmd->pending && !server->standalone) {
1472 old_ident = silc_command_get_ident(cmd->payload);
1473 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
1474 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
1476 /* Send IDENTIFY command to our router */
1477 silc_server_packet_send(server, (SilcSocketConnection)
1478 server->router->connection,
1479 SILC_PACKET_COMMAND, cmd->packet->flags,
1480 tmpbuf->data, tmpbuf->len, TRUE);
1482 /* Reprocess this packet after received reply from router */
1483 silc_server_command_pending(server, SILC_COMMAND_IDENTIFY,
1484 silc_command_get_ident(cmd->payload),
1485 silc_server_command_destructor,
1486 silc_server_command_identify,
1487 silc_server_command_dup(cmd));
1488 cmd->pending = TRUE;
1490 silc_command_set_ident(cmd->payload, old_ident);
1492 silc_buffer_free(tmpbuf);
1497 /* We are ready to process the command request. Let's search for the
1498 requested client and send reply to the requesting client. */
1500 /* Parse the IDENTIFY request */
1501 if (!silc_server_command_whois_parse(cmd, &client_id, &client_id_count,
1502 &nick, &server_name, &count,
1503 SILC_COMMAND_IDENTIFY))
1506 /* Get all clients matching that ID or nickname from local list */
1507 if (client_id_count) {
1508 /* Check all Client ID's received in the command packet */
1509 for (i = 0; i < client_id_count; i++) {
1510 entry = silc_idlist_find_client_by_id(server->local_list,
1511 client_id[i], NULL);
1513 clients = silc_realloc(clients, sizeof(*clients) *
1514 (clients_count + 1));
1515 clients[clients_count++] = entry;
1519 if (!silc_idlist_get_clients_by_hash(server->local_list,
1520 nick, server->md5hash,
1521 &clients, &clients_count))
1522 silc_idlist_get_clients_by_nickname(server->local_list,
1524 &clients, &clients_count);
1527 /* Check global list as well */
1528 if (client_id_count) {
1529 /* Check all Client ID's received in the command packet */
1530 for (i = 0; i < client_id_count; i++) {
1531 entry = silc_idlist_find_client_by_id(server->global_list,
1532 client_id[i], NULL);
1534 clients = silc_realloc(clients, sizeof(*clients) *
1535 (clients_count + 1));
1536 clients[clients_count++] = entry;
1540 if (!silc_idlist_get_clients_by_hash(server->global_list,
1541 nick, server->md5hash,
1542 &clients, &clients_count))
1543 silc_idlist_get_clients_by_nickname(server->global_list,
1545 &clients, &clients_count);
1549 /* Such a client really does not exist in the SILC network. */
1550 if (!client_id_count) {
1551 silc_server_command_send_status_data(cmd, SILC_COMMAND_IDENTIFY,
1552 SILC_STATUS_ERR_NO_SUCH_NICK,
1553 3, nick, strlen(nick));
1555 SilcBuffer idp = silc_id_payload_encode(client_id[0], SILC_ID_CLIENT);
1556 silc_server_command_send_status_data(cmd, SILC_COMMAND_IDENTIFY,
1557 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID,
1558 2, idp->data, idp->len);
1559 silc_buffer_free(idp);
1564 /* Check that all mandatory fields are present and request those data
1565 from the server who owns the client if necessary. */
1566 if (!silc_server_command_identify_check(cmd, clients, clients_count)) {
1571 /* Send the command reply to the client */
1572 silc_server_command_identify_send_reply(cmd, clients, clients_count,
1576 if (client_id_count) {
1577 for (i = 0; i < client_id_count; i++)
1578 silc_free(client_id[i]);
1579 silc_free(client_id);
1586 silc_free(server_name);
1592 silc_server_command_identify_from_server(SilcServerCommandContext cmd)
1594 SilcServer server = cmd->server;
1595 char *nick = NULL, *server_name = NULL;
1597 SilcClientEntry *clients = NULL, entry;
1598 SilcClientID **client_id = NULL;
1599 uint32 client_id_count = 0, clients_count = 0;
1602 /* Parse the IDENTIFY request */
1603 if (!silc_server_command_whois_parse(cmd, &client_id, &client_id_count,
1604 &nick, &server_name, &count,
1605 SILC_COMMAND_IDENTIFY))
1608 /* Process the command request. Let's search for the requested client and
1609 send reply to the requesting server. */
1611 if (client_id_count) {
1612 /* Check all Client ID's received in the command packet */
1613 for (i = 0; i < client_id_count; i++) {
1614 entry = silc_idlist_find_client_by_id(server->local_list,
1615 client_id[i], NULL);
1617 clients = silc_realloc(clients, sizeof(*clients) *
1618 (clients_count + 1));
1619 clients[clients_count++] = entry;
1623 if (!silc_idlist_get_clients_by_hash(server->local_list,
1624 nick, server->md5hash,
1625 &clients, &clients_count))
1626 silc_idlist_get_clients_by_nickname(server->local_list,
1628 &clients, &clients_count);
1631 /* If we are router we will check our global list as well. */
1632 if (server->server_type == SILC_ROUTER) {
1633 if (client_id_count) {
1634 /* Check all Client ID's received in the command packet */
1635 for (i = 0; i < client_id_count; i++) {
1636 entry = silc_idlist_find_client_by_id(server->global_list,
1637 client_id[i], NULL);
1639 clients = silc_realloc(clients, sizeof(*clients) *
1640 (clients_count + 1));
1641 clients[clients_count++] = entry;
1645 if (!silc_idlist_get_clients_by_hash(server->global_list,
1646 nick, server->md5hash,
1647 &clients, &clients_count))
1648 silc_idlist_get_clients_by_nickname(server->global_list,
1650 &clients, &clients_count);
1655 /* Such a client really does not exist in the SILC network. */
1656 if (!client_id_count) {
1657 silc_server_command_send_status_data(cmd, SILC_COMMAND_IDENTIFY,
1658 SILC_STATUS_ERR_NO_SUCH_NICK,
1659 3, nick, strlen(nick));
1661 SilcBuffer idp = silc_id_payload_encode(client_id[0], SILC_ID_CLIENT);
1662 silc_server_command_send_status_data(cmd, SILC_COMMAND_IDENTIFY,
1663 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID,
1664 2, idp->data, idp->len);
1665 silc_buffer_free(idp);
1670 /* Check that all mandatory fields are present and request those data
1671 from the server who owns the client if necessary. */
1672 if (!silc_server_command_identify_check(cmd, clients, clients_count)) {
1677 /* Send the command reply */
1678 silc_server_command_identify_send_reply(cmd, clients, clients_count, count);
1681 if (client_id_count) {
1682 for (i = 0; i < client_id_count; i++)
1683 silc_free(client_id[i]);
1684 silc_free(client_id);
1691 silc_free(server_name);
1696 SILC_SERVER_CMD_FUNC(identify)
1698 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
1701 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_IDENTIFY, cmd, 1, 3328);
1703 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT)
1704 ret = silc_server_command_identify_from_client(cmd);
1705 else if ((cmd->sock->type == SILC_SOCKET_TYPE_SERVER) |
1706 (cmd->sock->type == SILC_SOCKET_TYPE_ROUTER))
1707 ret = silc_server_command_identify_from_server(cmd);
1710 silc_server_command_free(cmd);
1713 /* Checks string for bad characters and returns TRUE if they are found. */
1715 static int silc_server_command_bad_chars(char *nick)
1717 if (strchr(nick, '\\')) return TRUE;
1718 if (strchr(nick, '\"')) return TRUE;
1719 if (strchr(nick, '´')) return TRUE;
1720 if (strchr(nick, '`')) return TRUE;
1721 if (strchr(nick, '\'')) return TRUE;
1722 if (strchr(nick, '*')) return TRUE;
1723 if (strchr(nick, '/')) return TRUE;
1724 if (strchr(nick, '@')) return TRUE;
1729 /* Server side of command NICK. Sets nickname for user. Setting
1730 nickname causes generation of a new client ID for the client. The
1731 new client ID is sent to the client after changing the nickname. */
1733 SILC_SERVER_CMD_FUNC(nick)
1735 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
1736 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
1737 SilcServer server = cmd->server;
1738 SilcBuffer packet, nidp, oidp;
1739 SilcClientID *new_id;
1741 uint16 ident = silc_command_get_ident(cmd->payload);
1743 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
1746 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_NICK, cmd, 1, 1);
1748 /* Check nickname */
1749 nick = silc_argument_get_arg_type(cmd->args, 1, NULL);
1750 if (silc_server_command_bad_chars(nick) == TRUE) {
1751 silc_server_command_send_status_reply(cmd, SILC_COMMAND_NICK,
1752 SILC_STATUS_ERR_BAD_NICKNAME);
1756 if (strlen(nick) > 128)
1759 /* Create new Client ID */
1760 silc_id_create_client_id(cmd->server->id, cmd->server->rng,
1761 cmd->server->md5hash, nick,
1764 /* Send notify about nickname change to our router. We send the new
1765 ID and ask to replace it with the old one. If we are router the
1766 packet is broadcasted. Send NICK_CHANGE notify. */
1767 if (!server->standalone)
1768 silc_server_send_notify_nick_change(server, server->router->connection,
1769 server->server_type == SILC_SERVER ?
1770 FALSE : TRUE, client->id,
1773 /* Remove old cache entry */
1774 silc_idcache_del_by_context(server->local_list->clients, client);
1776 oidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
1780 silc_free(client->id);
1782 /* Save the nickname as this client is our local client */
1783 if (client->nickname)
1784 silc_free(client->nickname);
1786 client->nickname = strdup(nick);
1787 client->id = new_id;
1789 /* Update client cache */
1790 silc_idcache_add(server->local_list->clients, client->nickname,
1791 client->id, (void *)client, FALSE);
1793 nidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
1795 /* Send NICK_CHANGE notify to the client's channels */
1796 silc_server_send_notify_on_channels(server, NULL, client,
1797 SILC_NOTIFY_TYPE_NICK_CHANGE, 2,
1798 oidp->data, oidp->len,
1799 nidp->data, nidp->len);
1801 /* Send the new Client ID as reply command back to client */
1802 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_NICK,
1803 SILC_STATUS_OK, ident, 1,
1804 2, nidp->data, nidp->len);
1805 silc_server_packet_send(cmd->server, cmd->sock, SILC_PACKET_COMMAND_REPLY,
1806 0, packet->data, packet->len, FALSE);
1808 silc_buffer_free(packet);
1809 silc_buffer_free(nidp);
1810 silc_buffer_free(oidp);
1813 silc_server_command_free(cmd);
1816 /* Sends the LIST command reply */
1819 silc_server_command_list_send_reply(SilcServerCommandContext cmd,
1820 SilcChannelEntry *lch,
1822 SilcChannelEntry *gch,
1826 SilcBuffer packet, idp;
1827 SilcChannelEntry entry;
1828 SilcCommandStatus status;
1829 uint16 ident = silc_command_get_ident(cmd->payload);
1831 unsigned char usercount[4];
1834 for (i = 0; i < lch_count; i++)
1835 if (lch[i]->mode & SILC_CHANNEL_MODE_SECRET)
1837 for (i = 0; i < gch_count; i++)
1838 if (gch[i]->mode & SILC_CHANNEL_MODE_SECRET)
1841 status = SILC_STATUS_OK;
1842 if ((lch_count + gch_count) > 1)
1843 status = SILC_STATUS_LIST_START;
1846 for (i = 0; i < lch_count; i++) {
1853 status = SILC_STATUS_LIST_ITEM;
1855 if (i == lch_count - 1 && gch_count)
1857 if (lch_count > 1 && i == lch_count - 1)
1858 status = SILC_STATUS_LIST_END;
1860 idp = silc_id_payload_encode(entry->id, SILC_ID_CHANNEL);
1862 if (entry->mode & SILC_CHANNEL_MODE_PRIVATE) {
1863 topic = "*private*";
1864 memset(usercount, 0, sizeof(usercount));
1866 topic = entry->topic;
1867 users = silc_hash_table_count(entry->user_list);
1868 SILC_PUT32_MSB(users, usercount);
1871 /* Send the reply */
1874 silc_command_reply_payload_encode_va(SILC_COMMAND_LIST,
1876 2, idp->data, idp->len,
1877 3, entry->channel_name,
1878 strlen(entry->channel_name),
1879 4, topic, strlen(topic),
1883 silc_command_reply_payload_encode_va(SILC_COMMAND_LIST,
1885 2, idp->data, idp->len,
1886 3, entry->channel_name,
1887 strlen(entry->channel_name),
1889 silc_server_packet_send(cmd->server, cmd->sock,
1890 SILC_PACKET_COMMAND_REPLY, 0, packet->data,
1891 packet->len, FALSE);
1892 silc_buffer_free(packet);
1893 silc_buffer_free(idp);
1896 status = i ? SILC_STATUS_LIST_ITEM : SILC_STATUS_OK;
1899 for (i = 0; i < gch_count; i++) {
1906 status = SILC_STATUS_LIST_ITEM;
1908 if (gch_count > 1 && i == lch_count - 1)
1909 status = SILC_STATUS_LIST_END;
1911 idp = silc_id_payload_encode(entry->id, SILC_ID_CHANNEL);
1913 if (entry->mode & SILC_CHANNEL_MODE_PRIVATE) {
1914 topic = "*private*";
1915 memset(usercount, 0, sizeof(usercount));
1917 topic = entry->topic;
1918 users = silc_hash_table_count(entry->user_list);
1919 SILC_PUT32_MSB(users, usercount);
1922 /* Send the reply */
1925 silc_command_reply_payload_encode_va(SILC_COMMAND_LIST,
1927 2, idp->data, idp->len,
1928 3, entry->channel_name,
1929 strlen(entry->channel_name),
1930 4, topic, strlen(topic),
1934 silc_command_reply_payload_encode_va(SILC_COMMAND_LIST,
1936 2, idp->data, idp->len,
1937 3, entry->channel_name,
1938 strlen(entry->channel_name),
1940 silc_server_packet_send(cmd->server, cmd->sock,
1941 SILC_PACKET_COMMAND_REPLY, 0, packet->data,
1942 packet->len, FALSE);
1943 silc_buffer_free(packet);
1944 silc_buffer_free(idp);
1948 /* Server side of LIST command. This lists the channel of the requested
1949 server. Secret channels are not listed. */
1951 SILC_SERVER_CMD_FUNC(list)
1953 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
1954 SilcServer server = cmd->server;
1955 SilcChannelID *channel_id = NULL;
1958 SilcChannelEntry *lchannels = NULL, *gchannels = NULL;
1959 uint32 lch_count = 0, gch_count = 0;
1961 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_LIST, cmd, 0, 2);
1963 /* Get Channel ID */
1964 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
1966 channel_id = silc_id_payload_parse_id(tmp, tmp_len);
1968 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LIST,
1969 SILC_STATUS_ERR_NO_CHANNEL_ID);
1974 /* Get the channels from local list */
1975 lchannels = silc_idlist_get_channels(server->local_list, channel_id,
1978 /* Get the channels from global list if we are router */
1979 if (server->server_type == SILC_ROUTER)
1980 gchannels = silc_idlist_get_channels(server->global_list, channel_id,
1983 /* Send the reply */
1984 silc_server_command_list_send_reply(cmd, lchannels, lch_count,
1985 gchannels, gch_count);
1988 silc_server_command_free(cmd);
1991 /* Server side of TOPIC command. Sets topic for channel and/or returns
1992 current topic to client. */
1994 SILC_SERVER_CMD_FUNC(topic)
1996 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
1997 SilcServer server = cmd->server;
1998 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
1999 SilcChannelID *channel_id;
2000 SilcChannelEntry channel;
2001 SilcChannelClientEntry chl;
2002 SilcBuffer packet, idp;
2004 uint32 argc, tmp_len;
2005 uint16 ident = silc_command_get_ident(cmd->payload);
2007 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_TOPIC, cmd, 1, 2);
2009 argc = silc_argument_get_arg_num(cmd->args);
2011 /* Get Channel ID */
2012 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
2014 silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
2015 SILC_STATUS_ERR_NO_CHANNEL_ID);
2018 channel_id = silc_id_payload_parse_id(tmp, tmp_len);
2020 silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
2021 SILC_STATUS_ERR_NO_CHANNEL_ID);
2025 /* Check whether the channel exists */
2026 channel = silc_idlist_find_channel_by_id(server->local_list,
2029 channel = silc_idlist_find_channel_by_id(server->global_list,
2032 silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
2033 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
2040 tmp = silc_argument_get_arg_type(cmd->args, 2, NULL);
2042 silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
2043 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
2047 if (strlen(tmp) > 256) {
2048 silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
2049 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
2053 /* See whether the client is on channel and has rights to change topic */
2054 if (!silc_hash_table_find(channel->user_list, client, NULL,
2056 silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
2057 SILC_STATUS_ERR_NOT_ON_CHANNEL);
2061 if (chl->mode == SILC_CHANNEL_UMODE_NONE) {
2062 if (channel->mode & SILC_CHANNEL_MODE_TOPIC) {
2063 silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
2064 SILC_STATUS_ERR_NO_CHANNEL_PRIV);
2069 /* Set the topic for channel */
2071 silc_free(channel->topic);
2072 channel->topic = strdup(tmp);
2074 /* Send TOPIC_SET notify type to the network */
2075 if (!server->standalone)
2076 silc_server_send_notify_topic_set(server, server->router->connection,
2077 server->server_type == SILC_ROUTER ?
2078 TRUE : FALSE, channel, client->id,
2081 idp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
2083 /* Send notify about topic change to all clients on the channel */
2084 silc_server_send_notify_to_channel(server, NULL, channel, TRUE,
2085 SILC_NOTIFY_TYPE_TOPIC_SET, 2,
2086 idp->data, idp->len,
2087 channel->topic, strlen(channel->topic));
2088 silc_buffer_free(idp);
2091 /* Send the topic to client as reply packet */
2092 idp = silc_id_payload_encode(channel_id, SILC_ID_CHANNEL);
2094 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_TOPIC,
2095 SILC_STATUS_OK, ident, 2,
2096 2, idp->data, idp->len,
2098 strlen(channel->topic));
2100 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_TOPIC,
2101 SILC_STATUS_OK, ident, 1,
2102 2, idp->data, idp->len);
2103 silc_server_packet_send(cmd->server, cmd->sock, SILC_PACKET_COMMAND_REPLY,
2104 0, packet->data, packet->len, FALSE);
2106 silc_buffer_free(packet);
2107 silc_buffer_free(idp);
2108 silc_free(channel_id);
2111 silc_server_command_free(cmd);
2114 /* Server side of INVITE command. Invites some client to join some channel.
2115 This command is also used to manage the invite list of the channel. */
2117 SILC_SERVER_CMD_FUNC(invite)
2119 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2120 SilcServer server = cmd->server;
2121 SilcSocketConnection sock = cmd->sock, dest_sock;
2122 SilcChannelClientEntry chl;
2123 SilcClientEntry sender, dest;
2124 SilcClientID *dest_id = NULL;
2125 SilcChannelEntry channel;
2126 SilcChannelID *channel_id = NULL;
2127 SilcIDListData idata;
2128 SilcBuffer idp, idp2, packet;
2129 unsigned char *tmp, *add, *del;
2131 uint16 ident = silc_command_get_ident(cmd->payload);
2133 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_INVITE, cmd, 1, 4);
2135 /* Get Channel ID */
2136 tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
2138 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
2139 SILC_STATUS_ERR_NO_CHANNEL_ID);
2142 channel_id = silc_id_payload_parse_id(tmp, len);
2144 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
2145 SILC_STATUS_ERR_NO_CHANNEL_ID);
2149 /* Get the channel entry */
2150 channel = silc_idlist_find_channel_by_id(server->local_list,
2153 channel = silc_idlist_find_channel_by_id(server->global_list,
2156 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
2157 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
2162 /* Check whether the sender of this command is on the channel. */
2163 sender = (SilcClientEntry)sock->user_data;
2164 if (!silc_server_client_on_channel(sender, channel)) {
2165 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
2166 SILC_STATUS_ERR_NOT_ON_CHANNEL);
2170 /* Check whether the channel is invite-only channel. If yes then the
2171 sender of this command must be at least channel operator. */
2172 if (channel->mode & SILC_CHANNEL_MODE_INVITE) {
2173 silc_hash_table_find(channel->user_list, sender, NULL, (void *)&chl);
2174 if (chl->mode == SILC_CHANNEL_UMODE_NONE) {
2175 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
2176 SILC_STATUS_ERR_NO_CHANNEL_PRIV);
2181 /* Get destination client ID */
2182 tmp = silc_argument_get_arg_type(cmd->args, 2, &len);
2186 dest_id = silc_id_payload_parse_id(tmp, len);
2188 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
2189 SILC_STATUS_ERR_NO_CLIENT_ID);
2193 /* Get the client entry */
2194 dest = silc_server_get_client_resolve(server, dest_id);
2196 if (server->server_type == SILC_ROUTER) {
2197 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
2198 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID);
2202 /* The client info is being resolved. Reprocess this packet after
2203 receiving the reply to the query. */
2204 silc_server_command_pending(server, SILC_COMMAND_WHOIS,
2206 silc_server_command_destructor,
2207 silc_server_command_invite,
2208 silc_server_command_dup(cmd));
2209 cmd->pending = TRUE;
2210 silc_free(channel_id);
2215 /* Check whether the requested client is already on the channel. */
2216 if (silc_server_client_on_channel(dest, channel)) {
2217 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
2218 SILC_STATUS_ERR_USER_ON_CHANNEL);
2222 /* Get route to the client */
2223 dest_sock = silc_server_get_client_route(server, NULL, 0, dest_id, &idata);
2225 memset(invite, 0, sizeof(invite));
2226 strncat(invite, dest->nickname, strlen(dest->nickname));
2227 strncat(invite, "!", 1);
2228 strncat(invite, dest->username, strlen(dest->username));
2229 if (!strchr(dest->username, '@')) {
2230 strncat(invite, "@", 1);
2231 strncat(invite, cmd->sock->hostname, strlen(cmd->sock->hostname));
2234 len = strlen(invite);
2235 if (!channel->invite_list)
2236 channel->invite_list = silc_calloc(len + 2,
2237 sizeof(*channel->invite_list));
2239 channel->invite_list = silc_realloc(channel->invite_list,
2240 sizeof(*channel->invite_list) *
2242 strlen(channel->invite_list) + 2));
2243 strncat(channel->invite_list, invite, len);
2244 strncat(channel->invite_list, ",", 1);
2246 /* Send notify to the client that is invited to the channel */
2247 idp = silc_id_payload_encode(channel_id, SILC_ID_CHANNEL);
2248 idp2 = silc_id_payload_encode(sender->id, SILC_ID_CLIENT);
2249 silc_server_send_notify_dest(server, dest_sock, FALSE, dest_id,
2251 SILC_NOTIFY_TYPE_INVITE, 3,
2252 idp->data, idp->len,
2253 channel->channel_name,
2254 strlen(channel->channel_name),
2255 idp2->data, idp2->len);
2256 silc_buffer_free(idp);
2257 silc_buffer_free(idp2);
2260 /* Add the client to the invite list of the channel */
2261 add = silc_argument_get_arg_type(cmd->args, 3, &len);
2263 if (!channel->invite_list)
2264 channel->invite_list = silc_calloc(len + 2,
2265 sizeof(*channel->invite_list));
2267 channel->invite_list = silc_realloc(channel->invite_list,
2268 sizeof(*channel->invite_list) *
2270 strlen(channel->invite_list) + 2));
2271 if (add[len - 1] == ',')
2272 add[len - 1] = '\0';
2274 strncat(channel->invite_list, add, len);
2275 strncat(channel->invite_list, ",", 1);
2278 /* Get the invite to be removed and remove it from the list */
2279 del = silc_argument_get_arg_type(cmd->args, 4, &len);
2280 if (del && channel->invite_list) {
2281 char *start, *end, *n;
2283 if (!strncmp(channel->invite_list, del,
2284 strlen(channel->invite_list) - 1)) {
2285 silc_free(channel->invite_list);
2286 channel->invite_list = NULL;
2288 start = strstr(channel->invite_list, del);
2289 if (start && strlen(start) >= len) {
2291 n = silc_calloc(strlen(channel->invite_list) - len, sizeof(*n));
2292 strncat(n, channel->invite_list, start - channel->invite_list);
2293 strncat(n, end + 1, ((channel->invite_list +
2294 strlen(channel->invite_list)) - end) - 1);
2295 silc_free(channel->invite_list);
2296 channel->invite_list = n;
2301 /* Send notify to the primary router */
2302 if (!server->standalone)
2303 silc_server_send_notify_invite(server, server->router->connection,
2304 server->server_type == SILC_ROUTER ?
2305 TRUE : FALSE, channel,
2306 sender->id, add, del);
2308 /* Send command reply */
2309 tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
2310 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_INVITE,
2311 SILC_STATUS_OK, ident, 2,
2313 3, channel->invite_list,
2314 channel->invite_list ?
2315 strlen(channel->invite_list) :
2317 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
2318 packet->data, packet->len, FALSE);
2319 silc_buffer_free(packet);
2325 silc_free(channel_id);
2326 silc_server_command_free(cmd);
2331 SilcSocketConnection sock;
2335 /* Quits connection to client. This gets called if client won't
2336 close the connection even when it has issued QUIT command. */
2338 SILC_TASK_CALLBACK(silc_server_command_quit_cb)
2340 QuitInternal q = (QuitInternal)context;
2342 /* Free all client specific data, such as client entry and entires
2343 on channels this client may be on. */
2344 silc_server_free_client_data(q->server, q->sock, q->sock->user_data,
2346 q->sock->user_data = NULL;
2348 /* Close the connection on our side */
2349 silc_server_close_connection(q->server, q->sock);
2351 silc_free(q->signoff);
2355 /* Quits SILC session. This is the normal way to disconnect client. */
2357 SILC_SERVER_CMD_FUNC(quit)
2359 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2360 SilcServer server = cmd->server;
2361 SilcSocketConnection sock = cmd->sock;
2363 unsigned char *tmp = NULL;
2366 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_QUIT, cmd, 0, 1);
2368 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
2371 /* Get destination ID */
2372 tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
2376 q = silc_calloc(1, sizeof(*q));
2379 q->signoff = tmp ? strdup(tmp) : NULL;
2381 /* We quit the connection with little timeout */
2382 silc_task_register(server->timeout_queue, sock->sock,
2383 silc_server_command_quit_cb, (void *)q,
2384 0, 200000, SILC_TASK_TIMEOUT, SILC_TASK_PRI_LOW);
2387 silc_server_command_free(cmd);
2390 /* Server side of command KILL. This command is used by router operator
2391 to remove an client from the SILC Network temporarily. */
2393 SILC_SERVER_CMD_FUNC(kill)
2395 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2396 SilcServer server = cmd->server;
2397 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
2398 SilcClientEntry remote_client;
2399 SilcClientID *client_id;
2400 unsigned char *tmp, *comment;
2401 uint32 tmp_len, tmp_len2;
2403 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_KILL, cmd, 1, 2);
2405 if (!client || cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
2408 /* KILL command works only on router */
2409 if (server->server_type != SILC_ROUTER) {
2410 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
2411 SILC_STATUS_ERR_NO_ROUTER_PRIV);
2415 /* Check whether client has the permissions. */
2416 if (!(client->mode & SILC_UMODE_ROUTER_OPERATOR)) {
2417 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
2418 SILC_STATUS_ERR_NO_ROUTER_PRIV);
2422 /* Get the client ID */
2423 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
2425 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
2426 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
2429 client_id = silc_id_payload_parse_id(tmp, tmp_len);
2431 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
2432 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID);
2436 /* Get the client entry */
2437 remote_client = silc_idlist_find_client_by_id(server->local_list,
2439 if (!remote_client) {
2440 remote_client = silc_idlist_find_client_by_id(server->global_list,
2442 if (!remote_client) {
2443 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
2444 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID);
2450 comment = silc_argument_get_arg_type(cmd->args, 2, &tmp_len2);
2454 /* Send reply to the sender */
2455 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
2458 /* Send the KILL notify packets. First send it to the channel, then
2459 to our primary router and then directly to the client who is being
2460 killed right now. */
2462 /* Send KILLED notify to the channels. It is not sent to the client
2463 as it will be sent differently destined directly to the client and not
2465 silc_server_send_notify_on_channels(server, remote_client,
2466 remote_client, SILC_NOTIFY_TYPE_KILLED,
2469 comment, comment ? tmp_len2 : 0);
2471 /* Send KILLED notify to primary route */
2472 if (!server->standalone)
2473 silc_server_send_notify_killed(server, server->router->connection, TRUE,
2474 remote_client->id, comment);
2476 /* Send KILLED notify to the client directly */
2477 silc_server_send_notify_killed(server, remote_client->connection ?
2478 remote_client->connection :
2479 remote_client->router->connection, FALSE,
2480 remote_client->id, comment);
2482 /* Remove the client from all channels. This generates new keys to the
2483 channels as well. */
2484 silc_server_remove_from_channels(server, NULL, remote_client, FALSE,
2487 /* Remove the client entry, If it is locally connected then we will also
2488 disconnect the client here */
2489 if (remote_client->data.registered && remote_client->connection) {
2490 /* Remove locally conneted client */
2491 SilcSocketConnection sock = remote_client->connection;
2492 silc_server_free_client_data(server, sock, remote_client, FALSE, NULL);
2493 silc_server_close_connection(server, sock);
2495 /* Remove remote client */
2496 if (!silc_idlist_del_client(server->global_list, remote_client))
2497 silc_idlist_del_client(server->local_list, remote_client);
2501 silc_server_command_free(cmd);
2504 /* Server side of command INFO. This sends information about us to
2505 the client. If client requested specific server we will send the
2506 command to that server. */
2508 SILC_SERVER_CMD_FUNC(info)
2510 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2511 SilcServer server = cmd->server;
2512 SilcBuffer packet, idp;
2515 char *dest_server, *server_info = NULL, *server_name;
2516 uint16 ident = silc_command_get_ident(cmd->payload);
2517 SilcServerEntry entry = NULL;
2518 SilcServerID *server_id = NULL;
2520 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_INFO, cmd, 0, 2);
2522 /* Get server name */
2523 dest_server = silc_argument_get_arg_type(cmd->args, 1, NULL);
2526 tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
2528 server_id = silc_id_payload_parse_id(tmp, tmp_len);
2530 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INFO,
2531 SILC_STATUS_ERR_NO_SERVER_ID);
2537 /* Check whether we have this server cached */
2538 entry = silc_idlist_find_server_by_id(server->local_list,
2541 entry = silc_idlist_find_server_by_id(server->global_list,
2543 if (!entry && server->server_type == SILC_ROUTER) {
2544 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INFO,
2545 SILC_STATUS_ERR_NO_SUCH_SERVER);
2551 if ((!dest_server && !server_id) ||
2552 (dest_server && !cmd->pending &&
2553 !strncasecmp(dest_server, server->server_name, strlen(dest_server)))) {
2554 /* Send our reply */
2555 char info_string[256];
2557 memset(info_string, 0, sizeof(info_string));
2558 snprintf(info_string, sizeof(info_string),
2559 "location: %s server: %s admin: %s <%s>",
2560 server->config->admin_info->location,
2561 server->config->admin_info->server_type,
2562 server->config->admin_info->admin_name,
2563 server->config->admin_info->admin_email);
2565 server_info = info_string;
2566 entry = server->id_entry;
2568 /* Check whether we have this server cached */
2569 if (!entry && dest_server) {
2570 entry = silc_idlist_find_server_by_name(server->global_list,
2573 entry = silc_idlist_find_server_by_name(server->local_list,
2578 if (!cmd->pending &&
2579 server->server_type == SILC_ROUTER && entry && !entry->server_info) {
2580 /* Send to the server */
2584 old_ident = silc_command_get_ident(cmd->payload);
2585 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
2586 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
2588 silc_server_packet_send(server, entry->connection,
2589 SILC_PACKET_COMMAND, cmd->packet->flags,
2590 tmpbuf->data, tmpbuf->len, TRUE);
2592 /* Reprocess this packet after received reply from router */
2593 silc_server_command_pending(server, SILC_COMMAND_INFO,
2594 silc_command_get_ident(cmd->payload),
2595 silc_server_command_destructor,
2596 silc_server_command_info,
2597 silc_server_command_dup(cmd));
2598 cmd->pending = TRUE;
2599 silc_command_set_ident(cmd->payload, old_ident);
2600 silc_buffer_free(tmpbuf);
2604 if (!entry && !cmd->pending && !server->standalone) {
2605 /* Send to the primary router */
2609 old_ident = silc_command_get_ident(cmd->payload);
2610 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
2611 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
2613 silc_server_packet_send(server, server->router->connection,
2614 SILC_PACKET_COMMAND, cmd->packet->flags,
2615 tmpbuf->data, tmpbuf->len, TRUE);
2617 /* Reprocess this packet after received reply from router */
2618 silc_server_command_pending(server, SILC_COMMAND_INFO,
2619 silc_command_get_ident(cmd->payload),
2620 silc_server_command_destructor,
2621 silc_server_command_info,
2622 silc_server_command_dup(cmd));
2623 cmd->pending = TRUE;
2624 silc_command_set_ident(cmd->payload, old_ident);
2625 silc_buffer_free(tmpbuf);
2631 silc_free(server_id);
2634 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INFO,
2635 SILC_STATUS_ERR_NO_SUCH_SERVER);
2639 idp = silc_id_payload_encode(entry->id, SILC_ID_SERVER);
2641 server_info = entry->server_info;
2642 server_name = entry->server_name;
2644 /* Send the reply */
2645 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_INFO,
2646 SILC_STATUS_OK, ident, 3,
2647 2, idp->data, idp->len,
2649 strlen(server_name),
2651 strlen(server_info));
2652 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
2653 packet->data, packet->len, FALSE);
2655 silc_buffer_free(packet);
2656 silc_buffer_free(idp);
2659 silc_server_command_free(cmd);
2662 /* Server side of command PING. This just replies to the ping. */
2664 SILC_SERVER_CMD_FUNC(ping)
2666 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2667 SilcServer server = cmd->server;
2672 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_INFO, cmd, 1, 2);
2675 tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
2677 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PING,
2678 SILC_STATUS_ERR_NO_SERVER_ID);
2681 id = silc_id_str2id(tmp, len, SILC_ID_SERVER);
2685 if (SILC_ID_SERVER_COMPARE(id, server->id)) {
2686 /* Send our reply */
2687 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PING,
2690 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PING,
2691 SILC_STATUS_ERR_NO_SUCH_SERVER);
2698 silc_server_command_free(cmd);
2701 /* Internal routine to join channel. The channel sent to this function
2702 has been either created or resolved from ID lists. This joins the sent
2703 client to the channel. */
2705 static void silc_server_command_join_channel(SilcServer server,
2706 SilcServerCommandContext cmd,
2707 SilcChannelEntry channel,
2708 SilcClientID *client_id,
2712 SilcSocketConnection sock = cmd->sock;
2714 uint32 tmp_len, user_count;
2715 unsigned char *passphrase = NULL, mode[4], tmp2[4], tmp3[4];
2716 SilcClientEntry client;
2717 SilcChannelClientEntry chl;
2718 SilcBuffer reply, chidp, clidp, keyp = NULL, user_list, mode_list;
2719 uint16 ident = silc_command_get_ident(cmd->payload);
2722 SILC_LOG_DEBUG(("Start"));
2727 /* Get the client entry */
2728 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT) {
2729 client = (SilcClientEntry)sock->user_data;
2731 client = silc_idlist_find_client_by_id(server->local_list, client_id,
2738 * Check channel modes
2741 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT) {
2742 strncat(check, client->nickname, strlen(client->nickname));
2743 if (!strchr(client->nickname, '@')) {
2744 strncat(check, "@", 1);
2745 strncat(check, server->server_name, strlen(server->server_name));
2747 strncat(check, "!", 1);
2748 strncat(check, client->username, strlen(client->username));
2749 if (!strchr(client->username, '@')) {
2750 strncat(check, "@", 1);
2751 strncat(check, cmd->sock->hostname, strlen(cmd->sock->hostname));
2755 /* Check invite list if channel is invite-only channel */
2756 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT &&
2757 channel->mode & SILC_CHANNEL_MODE_INVITE) {
2758 if (!channel->invite_list) {
2759 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2760 SILC_STATUS_ERR_NOT_INVITED);
2764 if (!silc_string_match(channel->invite_list, check)) {
2765 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2766 SILC_STATUS_ERR_NOT_INVITED);
2771 /* Check ban list if it exists. If the client's nickname, server,
2772 username and/or hostname is in the ban list the access to the
2773 channel is denied. */
2774 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT && channel->ban_list) {
2775 if (silc_string_match(channel->ban_list, check)) {
2776 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2777 SILC_STATUS_ERR_BANNED_FROM_CHANNEL);
2782 /* Get passphrase */
2783 tmp = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
2785 passphrase = silc_calloc(tmp_len, sizeof(*passphrase));
2786 memcpy(passphrase, tmp, tmp_len);
2789 /* Check the channel passphrase if set. */
2790 if (channel->mode & SILC_CHANNEL_MODE_PASSPHRASE) {
2791 if (!passphrase || memcmp(channel->passphrase, passphrase,
2792 strlen(channel->passphrase))) {
2793 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2794 SILC_STATUS_ERR_BAD_PASSWORD);
2799 /* Check user count limit if set. */
2800 if (channel->mode & SILC_CHANNEL_MODE_ULIMIT) {
2801 if (silc_hash_table_count(channel->user_list) + 1 >
2802 channel->user_limit) {
2803 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2804 SILC_STATUS_ERR_CHANNEL_IS_FULL);
2810 * Client is allowed to join to the channel. Make it happen.
2813 /* Check whether the client already is on the channel */
2814 if (silc_server_client_on_channel(client, channel)) {
2815 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2816 SILC_STATUS_ERR_USER_ON_CHANNEL);
2820 /* Generate new channel key as protocol dictates */
2821 if ((!created && silc_hash_table_count(channel->user_list) > 0) ||
2822 !channel->channel_key)
2823 silc_server_create_channel_key(server, channel, 0);
2825 /* Send the channel key. This is broadcasted to the channel but is not
2826 sent to the client who is joining to the channel. */
2827 if (!(channel->mode & SILC_CHANNEL_MODE_PRIVKEY))
2828 silc_server_send_channel_key(server, NULL, channel,
2829 server->server_type == SILC_ROUTER ?
2830 FALSE : !server->standalone);
2832 /* Join the client to the channel by adding it to channel's user list.
2833 Add also the channel to client entry's channels list for fast cross-
2835 chl = silc_calloc(1, sizeof(*chl));
2837 chl->client = client;
2838 chl->channel = channel;
2839 silc_hash_table_add(channel->user_list, client, chl);
2840 silc_hash_table_add(client->channels, channel, chl);
2842 /* Get users on the channel */
2843 silc_server_get_users_on_channel(server, channel, &user_list, &mode_list,
2846 /* Encode Client ID Payload of the original client who wants to join */
2847 clidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
2849 /* Encode command reply packet */
2850 chidp = silc_id_payload_encode(channel->id, SILC_ID_CHANNEL);
2851 SILC_PUT32_MSB(channel->mode, mode);
2852 SILC_PUT32_MSB(created, tmp2);
2853 SILC_PUT32_MSB(user_count, tmp3);
2855 if (!(channel->mode & SILC_CHANNEL_MODE_PRIVKEY)) {
2856 tmp = silc_id_id2str(channel->id, SILC_ID_CHANNEL);
2857 keyp = silc_channel_key_payload_encode(SILC_ID_CHANNEL_LEN, tmp,
2858 strlen(channel->channel_key->
2860 channel->channel_key->cipher->name,
2861 channel->key_len / 8, channel->key);
2866 silc_command_reply_payload_encode_va(SILC_COMMAND_JOIN,
2867 SILC_STATUS_OK, ident, 13,
2868 2, channel->channel_name,
2869 strlen(channel->channel_name),
2870 3, chidp->data, chidp->len,
2871 4, clidp->data, clidp->len,
2874 7, keyp ? keyp->data : NULL,
2875 keyp ? keyp->len : 0,
2876 8, channel->ban_list,
2878 strlen(channel->ban_list) : 0,
2879 9, channel->invite_list,
2880 channel->invite_list ?
2881 strlen(channel->invite_list) : 0,
2884 strlen(channel->topic) : 0,
2885 11, channel->hmac->hmac->name,
2886 strlen(channel->hmac->hmac->name),
2888 13, user_list->data, user_list->len,
2889 14, mode_list->data,
2892 /* Send command reply */
2893 silc_server_packet_send(server, sock, SILC_PACKET_COMMAND_REPLY, 0,
2894 reply->data, reply->len, FALSE);
2896 if (!cmd->pending) {
2897 /* Send JOIN notify to locally connected clients on the channel */
2898 silc_server_send_notify_to_channel(server, NULL, channel, FALSE,
2899 SILC_NOTIFY_TYPE_JOIN, 2,
2900 clidp->data, clidp->len,
2901 chidp->data, chidp->len);
2903 /* Send JOIN notify packet to our primary router */
2904 if (!server->standalone)
2905 silc_server_send_notify_join(server, server->router->connection,
2906 server->server_type == SILC_ROUTER ?
2907 TRUE : FALSE, channel, client->id);
2910 silc_buffer_free(reply);
2911 silc_buffer_free(clidp);
2912 silc_buffer_free(chidp);
2913 silc_buffer_free(keyp);
2914 silc_buffer_free(user_list);
2915 silc_buffer_free(mode_list);
2919 silc_free(passphrase);
2922 /* Server side of command JOIN. Joins client into requested channel. If
2923 the channel does not exist it will be created. */
2925 SILC_SERVER_CMD_FUNC(join)
2927 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2928 SilcServer server = cmd->server;
2930 char *tmp, *channel_name = NULL, *cipher, *hmac;
2931 SilcChannelEntry channel;
2933 int created = FALSE;
2934 SilcClientID *client_id;
2936 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_JOIN, cmd, 1, 4);
2938 /* Get channel name */
2939 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
2941 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2942 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
2947 if (strlen(channel_name) > 256)
2948 channel_name[255] = '\0';
2950 if (silc_server_command_bad_chars(channel_name) == TRUE) {
2951 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2952 SILC_STATUS_ERR_BAD_CHANNEL);
2953 silc_free(channel_name);
2957 /* Get Client ID of the client who is joining to the channel */
2958 tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
2960 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2961 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
2964 client_id = silc_id_payload_parse_id(tmp, tmp_len);
2966 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2967 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
2971 /* Get cipher and hmac name */
2972 cipher = silc_argument_get_arg_type(cmd->args, 4, NULL);
2973 hmac = silc_argument_get_arg_type(cmd->args, 5, NULL);
2975 /* See if the channel exists */
2976 channel = silc_idlist_find_channel_by_name(server->local_list,
2977 channel_name, NULL);
2979 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT) {
2980 /* If this is coming from client the Client ID in the command packet must
2981 be same as the client's ID. */
2982 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT) {
2983 SilcClientEntry entry = (SilcClientEntry)cmd->sock->user_data;
2984 if (!SILC_ID_CLIENT_COMPARE(entry->id, client_id)) {
2985 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2986 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
2991 if (!channel || !channel->id) {
2992 /* Channel not found */
2994 /* If we are standalone server we don't have a router, we just create
2995 the channel by ourselves. */
2996 if (server->standalone) {
2997 channel = silc_server_create_new_channel(server, server->id, cipher,
2998 hmac, channel_name, TRUE);
3000 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
3001 SILC_STATUS_ERR_UNKNOWN_ALGORITHM);
3005 umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
3010 /* The channel does not exist on our server. If we are normal server
3011 we will send JOIN command to our router which will handle the
3012 joining procedure (either creates the channel if it doesn't exist
3013 or joins the client to it). */
3014 if (server->server_type == SILC_SERVER) {
3018 old_ident = silc_command_get_ident(cmd->payload);
3019 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
3020 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
3022 /* Send JOIN command to our router */
3023 silc_server_packet_send(server, (SilcSocketConnection)
3024 server->router->connection,
3025 SILC_PACKET_COMMAND, cmd->packet->flags,
3026 tmpbuf->data, tmpbuf->len, TRUE);
3028 /* Reprocess this packet after received reply from router */
3029 silc_server_command_pending(server, SILC_COMMAND_JOIN,
3030 silc_command_get_ident(cmd->payload),
3031 silc_server_command_destructor,
3032 silc_server_command_join,
3033 silc_server_command_dup(cmd));
3034 cmd->pending = TRUE;
3038 /* We are router and the channel does not seem exist so we will check
3039 our global list as well for the channel. */
3040 channel = silc_idlist_find_channel_by_name(server->global_list,
3041 channel_name, NULL);
3043 /* Channel really does not exist, create it */
3044 channel = silc_server_create_new_channel(server, server->id, cipher,
3045 hmac, channel_name, TRUE);
3047 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
3048 SILC_STATUS_ERR_UNKNOWN_ALGORITHM);
3052 umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
3059 /* Channel not found */
3061 /* If the command came from router and/or we are normal server then
3062 something went wrong with the joining as the channel was not found.
3063 We can't do anything else but ignore this. */
3064 if (cmd->sock->type == SILC_SOCKET_TYPE_ROUTER ||
3065 server->server_type == SILC_SERVER)
3068 /* We are router and the channel does not seem exist so we will check
3069 our global list as well for the channel. */
3070 channel = silc_idlist_find_channel_by_name(server->global_list,
3071 channel_name, NULL);
3073 /* Channel really does not exist, create it */
3074 channel = silc_server_create_new_channel(server, server->id, cipher,
3075 hmac, channel_name, TRUE);
3077 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
3078 SILC_STATUS_ERR_UNKNOWN_ALGORITHM);
3082 umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
3088 /* If the channel does not have global users and is also empty it means the
3089 channel was created globally (by our router) and the client will be the
3090 channel founder and operator. */
3091 if (!channel->global_users && !silc_hash_table_count(channel->user_list)) {
3092 umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
3093 created = TRUE; /* Created globally by our router */
3096 /* Join to the channel */
3097 silc_server_command_join_channel(server, cmd, channel, client_id,
3100 silc_free(client_id);
3103 silc_server_command_free(cmd);
3106 /* Server side of command MOTD. Sends server's current "message of the
3107 day" to the client. */
3109 SILC_SERVER_CMD_FUNC(motd)
3111 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
3112 SilcServer server = cmd->server;
3113 SilcBuffer packet, idp;
3114 char *motd, *dest_server;
3116 uint16 ident = silc_command_get_ident(cmd->payload);
3118 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_MOTD, cmd, 1, 1);
3120 /* Get server name */
3121 dest_server = silc_argument_get_arg_type(cmd->args, 1, NULL);
3123 silc_server_command_send_status_reply(cmd, SILC_COMMAND_MOTD,
3124 SILC_STATUS_ERR_NO_SUCH_SERVER);
3128 if (!strncasecmp(dest_server, server->server_name, strlen(dest_server))) {
3131 idp = silc_id_payload_encode(server->id_entry->id, SILC_ID_SERVER);
3133 if (server->config && server->config->motd &&
3134 server->config->motd->motd_file) {
3136 motd = silc_file_read(server->config->motd->motd_file, &motd_len);
3141 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_MOTD,
3142 SILC_STATUS_OK, ident, 2,
3148 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_MOTD,
3149 SILC_STATUS_OK, ident, 1,
3153 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
3154 packet->data, packet->len, FALSE);
3155 silc_buffer_free(packet);
3156 silc_buffer_free(idp);
3158 SilcServerEntry entry;
3160 /* Check whether we have this server cached */
3161 entry = silc_idlist_find_server_by_name(server->global_list,
3164 entry = silc_idlist_find_server_by_name(server->local_list,
3168 if (server->server_type == SILC_ROUTER && !cmd->pending &&
3169 entry && !entry->motd) {
3170 /* Send to the server */
3174 old_ident = silc_command_get_ident(cmd->payload);
3175 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
3176 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
3178 silc_server_packet_send(server, entry->connection,
3179 SILC_PACKET_COMMAND, cmd->packet->flags,
3180 tmpbuf->data, tmpbuf->len, TRUE);
3182 /* Reprocess this packet after received reply from router */
3183 silc_server_command_pending(server, SILC_COMMAND_MOTD,
3184 silc_command_get_ident(cmd->payload),
3185 silc_server_command_destructor,
3186 silc_server_command_motd,
3187 silc_server_command_dup(cmd));
3188 cmd->pending = TRUE;
3189 silc_command_set_ident(cmd->payload, old_ident);
3190 silc_buffer_free(tmpbuf);
3194 if (!entry && !cmd->pending && !server->standalone) {
3195 /* Send to the primary router */
3199 old_ident = silc_command_get_ident(cmd->payload);
3200 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
3201 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
3203 silc_server_packet_send(server, server->router->connection,
3204 SILC_PACKET_COMMAND, cmd->packet->flags,
3205 tmpbuf->data, tmpbuf->len, TRUE);
3207 /* Reprocess this packet after received reply from router */
3208 silc_server_command_pending(server, SILC_COMMAND_MOTD,
3209 silc_command_get_ident(cmd->payload),
3210 silc_server_command_destructor,
3211 silc_server_command_motd,
3212 silc_server_command_dup(cmd));
3213 cmd->pending = TRUE;
3214 silc_command_set_ident(cmd->payload, old_ident);
3215 silc_buffer_free(tmpbuf);
3220 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INFO,
3221 SILC_STATUS_ERR_NO_SUCH_SERVER);
3225 idp = silc_id_payload_encode(server->id_entry->id, SILC_ID_SERVER);
3228 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_MOTD,
3229 SILC_STATUS_OK, ident, 2,
3232 strlen(entry->motd));
3234 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_MOTD,
3235 SILC_STATUS_OK, ident, 1,
3238 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
3239 packet->data, packet->len, FALSE);
3240 silc_buffer_free(packet);
3241 silc_buffer_free(idp);
3245 silc_server_command_free(cmd);
3248 /* Server side of command UMODE. Client can use this command to set/unset
3249 user mode. Client actually cannot set itself to be as server/router
3250 operator so this can be used only to unset the modes. */
3252 SILC_SERVER_CMD_FUNC(umode)
3254 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
3255 SilcServer server = cmd->server;
3256 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
3258 unsigned char *tmp_mask;
3260 uint16 ident = silc_command_get_ident(cmd->payload);
3262 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
3265 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_UMODE, cmd, 2, 2);
3267 /* Get the client's mode mask */
3268 tmp_mask = silc_argument_get_arg_type(cmd->args, 2, NULL);
3270 silc_server_command_send_status_reply(cmd, SILC_COMMAND_UMODE,
3271 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3274 SILC_GET32_MSB(mask, tmp_mask);
3280 if (mask & SILC_UMODE_SERVER_OPERATOR) {
3281 if (!(client->mode & SILC_UMODE_SERVER_OPERATOR)) {
3282 /* Cannot operator mode */
3283 silc_server_command_send_status_reply(cmd, SILC_COMMAND_UMODE,
3284 SILC_STATUS_ERR_PERM_DENIED);
3288 if (client->mode & SILC_UMODE_SERVER_OPERATOR)
3289 /* Remove the server operator rights */
3290 client->mode &= ~SILC_UMODE_SERVER_OPERATOR;
3293 if (mask & SILC_UMODE_ROUTER_OPERATOR) {
3294 if (!(client->mode & SILC_UMODE_ROUTER_OPERATOR)) {
3295 /* Cannot operator mode */
3296 silc_server_command_send_status_reply(cmd, SILC_COMMAND_UMODE,
3297 SILC_STATUS_ERR_PERM_DENIED);
3301 if (client->mode & SILC_UMODE_ROUTER_OPERATOR)
3302 /* Remove the router operator rights */
3303 client->mode &= ~SILC_UMODE_ROUTER_OPERATOR;
3306 if (mask & SILC_UMODE_GONE) {
3307 client->mode |= SILC_UMODE_GONE;
3309 if (client->mode & SILC_UMODE_GONE)
3310 /* Remove the gone status */
3311 client->mode &= ~SILC_UMODE_GONE;
3314 /* Send UMODE change to primary router */
3315 if (!server->standalone)
3316 silc_server_send_notify_umode(server, server->router->connection, TRUE,
3317 client->id, client->mode);
3319 /* Send command reply to sender */
3320 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_UMODE,
3321 SILC_STATUS_OK, ident, 1,
3323 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
3324 packet->data, packet->len, FALSE);
3325 silc_buffer_free(packet);
3328 silc_server_command_free(cmd);
3331 /* Checks that client has rights to add or remove channel modes. If any
3332 of the checks fails FALSE is returned. */
3334 int silc_server_check_cmode_rights(SilcChannelEntry channel,
3335 SilcChannelClientEntry client,
3338 int is_op = client->mode & SILC_CHANNEL_UMODE_CHANOP;
3339 int is_fo = client->mode & SILC_CHANNEL_UMODE_CHANFO;
3341 /* Check whether has rights to change anything */
3342 if (!is_op && !is_fo)
3345 /* Check whether has rights to change everything */
3349 /* We know that client is channel operator, check that they are not
3350 changing anything that requires channel founder rights. Rest of the
3351 modes are available automatically for channel operator. */
3353 if (mode & SILC_CHANNEL_MODE_PRIVKEY) {
3354 if (is_op && !is_fo)
3357 if (channel->mode & SILC_CHANNEL_MODE_PRIVKEY) {
3358 if (is_op && !is_fo)
3363 if (mode & SILC_CHANNEL_MODE_PASSPHRASE) {
3364 if (is_op && !is_fo)
3367 if (channel->mode & SILC_CHANNEL_MODE_PASSPHRASE) {
3368 if (is_op && !is_fo)
3373 if (mode & SILC_CHANNEL_MODE_CIPHER) {
3374 if (is_op && !is_fo)
3377 if (channel->mode & SILC_CHANNEL_MODE_CIPHER) {
3378 if (is_op && !is_fo)
3383 if (mode & SILC_CHANNEL_MODE_FOUNDER_AUTH) {
3384 if (is_op && !is_fo)
3387 if (channel->mode & SILC_CHANNEL_MODE_FOUNDER_AUTH) {
3388 if (is_op && !is_fo)
3396 /* Server side command of CMODE. Changes channel mode */
3398 SILC_SERVER_CMD_FUNC(cmode)
3400 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
3401 SilcServer server = cmd->server;
3402 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
3403 SilcIDListData idata = (SilcIDListData)client;
3404 SilcChannelID *channel_id;
3405 SilcChannelEntry channel;
3406 SilcChannelClientEntry chl;
3407 SilcBuffer packet, cidp;
3408 unsigned char *tmp, *tmp_id, *tmp_mask;
3409 char *cipher = NULL, *hmac = NULL;
3410 uint32 mode_mask, tmp_len, tmp_len2;
3411 uint16 ident = silc_command_get_ident(cmd->payload);
3413 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_CMODE, cmd, 2, 7);
3415 /* Get Channel ID */
3416 tmp_id = silc_argument_get_arg_type(cmd->args, 1, &tmp_len2);
3418 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3419 SILC_STATUS_ERR_NO_CHANNEL_ID);
3422 channel_id = silc_id_payload_parse_id(tmp_id, tmp_len2);
3424 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3425 SILC_STATUS_ERR_NO_CHANNEL_ID);
3429 /* Get the channel mode mask */
3430 tmp_mask = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
3432 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3433 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3436 SILC_GET32_MSB(mode_mask, tmp_mask);
3438 /* Get channel entry */
3439 channel = silc_idlist_find_channel_by_id(server->local_list,
3442 channel = silc_idlist_find_channel_by_id(server->global_list,
3445 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3446 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
3451 /* Check whether this client is on the channel */
3452 if (!silc_server_client_on_channel(client, channel)) {
3453 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3454 SILC_STATUS_ERR_NOT_ON_CHANNEL);
3458 /* Get entry to the channel user list */
3459 silc_hash_table_find(channel->user_list, client, NULL, (void *)&chl);
3461 /* Check that client has rights to change any requested channel modes */
3462 if (!silc_server_check_cmode_rights(channel, chl, mode_mask)) {
3463 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3464 SILC_STATUS_ERR_NO_CHANNEL_PRIV);
3469 * Check the modes. Modes that requires nothing special operation are
3473 if (mode_mask & SILC_CHANNEL_MODE_PRIVKEY) {
3474 /* Channel uses private keys to protect traffic. Client(s) has set the
3475 key locally they want to use, server does not know that key. */
3476 /* Nothing interesting to do here */
3478 if (channel->mode & SILC_CHANNEL_MODE_PRIVKEY) {
3479 /* The mode is removed and we need to generate and distribute
3480 new channel key. Clients are not using private channel keys
3481 anymore after this. */
3483 /* Re-generate channel key */
3484 silc_server_create_channel_key(server, channel, 0);
3486 /* Send the channel key. This sends it to our local clients and if
3487 we are normal server to our router as well. */
3488 silc_server_send_channel_key(server, NULL, channel,
3489 server->server_type == SILC_ROUTER ?
3490 FALSE : !server->standalone);
3492 cipher = channel->channel_key->cipher->name;
3493 hmac = channel->hmac->hmac->name;
3497 if (mode_mask & SILC_CHANNEL_MODE_ULIMIT) {
3498 /* User limit is set on channel */
3501 /* Get user limit */
3502 tmp = silc_argument_get_arg_type(cmd->args, 3, NULL);
3504 if (!(channel->mode & SILC_CHANNEL_MODE_ULIMIT)) {
3505 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3506 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3510 SILC_GET32_MSB(user_limit, tmp);
3511 channel->user_limit = user_limit;
3514 if (channel->mode & SILC_CHANNEL_MODE_ULIMIT)
3515 /* User limit mode is unset. Remove user limit */
3516 channel->user_limit = 0;
3519 if (mode_mask & SILC_CHANNEL_MODE_PASSPHRASE) {
3520 if (!(channel->mode & SILC_CHANNEL_MODE_PASSPHRASE)) {
3521 /* Passphrase has been set to channel */
3523 /* Get the passphrase */
3524 tmp = silc_argument_get_arg_type(cmd->args, 4, NULL);
3526 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3527 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3531 /* Save the passphrase */
3532 channel->passphrase = strdup(tmp);
3535 if (channel->mode & SILC_CHANNEL_MODE_PASSPHRASE) {
3536 /* Passphrase mode is unset. remove the passphrase */
3537 if (channel->passphrase) {
3538 silc_free(channel->passphrase);
3539 channel->passphrase = NULL;
3544 if (mode_mask & SILC_CHANNEL_MODE_CIPHER) {
3545 if (!(channel->mode & SILC_CHANNEL_MODE_CIPHER)) {
3546 /* Cipher to use protect the traffic */
3549 cipher = silc_argument_get_arg_type(cmd->args, 5, NULL);
3551 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3552 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3556 /* Delete old cipher and allocate the new one */
3557 silc_cipher_free(channel->channel_key);
3558 if (!silc_cipher_alloc(cipher, &channel->channel_key)) {
3559 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3560 SILC_STATUS_ERR_UNKNOWN_ALGORITHM);
3564 /* Re-generate channel key */
3565 silc_server_create_channel_key(server, channel, 0);
3567 /* Send the channel key. This sends it to our local clients and if
3568 we are normal server to our router as well. */
3569 silc_server_send_channel_key(server, NULL, channel,
3570 server->server_type == SILC_ROUTER ?
3571 FALSE : !server->standalone);
3574 if (channel->mode & SILC_CHANNEL_MODE_CIPHER) {
3575 /* Cipher mode is unset. Remove the cipher and revert back to
3577 cipher = channel->cipher;
3579 /* Delete old cipher and allocate default one */
3580 silc_cipher_free(channel->channel_key);
3581 if (!silc_cipher_alloc(cipher ? cipher : "aes-256-cbc",
3582 &channel->channel_key)) {
3583 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3584 SILC_STATUS_ERR_UNKNOWN_ALGORITHM);
3588 /* Re-generate channel key */
3589 silc_server_create_channel_key(server, channel, 0);
3591 /* Send the channel key. This sends it to our local clients and if
3592 we are normal server to our router as well. */
3593 silc_server_send_channel_key(server, NULL, channel,
3594 server->server_type == SILC_ROUTER ?
3595 FALSE : !server->standalone);
3599 if (mode_mask & SILC_CHANNEL_MODE_HMAC) {
3600 if (!(channel->mode & SILC_CHANNEL_MODE_HMAC)) {
3601 /* HMAC to use protect the traffic */
3602 unsigned char hash[32];
3605 hmac = silc_argument_get_arg_type(cmd->args, 6, NULL);
3607 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3608 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3612 /* Delete old hmac and allocate the new one */
3613 silc_hmac_free(channel->hmac);
3614 if (!silc_hmac_alloc(hmac, NULL, &channel->hmac)) {
3615 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3616 SILC_STATUS_ERR_UNKNOWN_ALGORITHM);
3620 /* Set the HMAC key out of current channel key. The client must do
3622 silc_hash_make(channel->hmac->hash, channel->key, channel->key_len / 8,
3624 silc_hmac_set_key(channel->hmac, hash,
3625 silc_hash_len(channel->hmac->hash));
3626 memset(hash, 0, sizeof(hash));
3629 if (channel->mode & SILC_CHANNEL_MODE_HMAC) {
3630 /* Hmac mode is unset. Remove the hmac and revert back to
3632 unsigned char hash[32];
3633 hmac = channel->hmac_name;
3635 /* Delete old hmac and allocate default one */
3636 silc_hmac_free(channel->hmac);
3637 if (!silc_hmac_alloc(hmac ? hmac : "hmac-sha1-96", NULL,
3639 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3640 SILC_STATUS_ERR_UNKNOWN_ALGORITHM);
3644 /* Set the HMAC key out of current channel key. The client must do
3646 silc_hash_make(channel->hmac->hash, channel->key, channel->key_len / 8,
3648 silc_hmac_set_key(channel->hmac, hash,
3649 silc_hash_len(channel->hmac->hash));
3650 memset(hash, 0, sizeof(hash));
3654 if (mode_mask & SILC_CHANNEL_MODE_FOUNDER_AUTH) {
3655 if (chl->mode & SILC_CHANNEL_UMODE_CHANFO) {
3656 if (!(channel->mode & SILC_CHANNEL_MODE_FOUNDER_AUTH)) {
3657 /* Set the founder authentication */
3658 SilcAuthPayload auth;
3660 tmp = silc_argument_get_arg_type(cmd->args, 7, &tmp_len);
3662 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3663 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3667 auth = silc_auth_payload_parse(tmp, tmp_len);
3669 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3670 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3674 /* Save the public key */
3675 tmp = silc_pkcs_public_key_encode(idata->public_key, &tmp_len);
3676 silc_pkcs_public_key_decode(tmp, tmp_len, &channel->founder_key);
3679 channel->founder_method = silc_auth_get_method(auth);
3681 if (channel->founder_method == SILC_AUTH_PASSWORD) {
3682 tmp = silc_auth_get_data(auth, &tmp_len);
3683 channel->founder_passwd =
3684 silc_calloc(tmp_len + 1, sizeof(*channel->founder_passwd));
3685 memcpy(channel->founder_passwd, tmp, tmp_len);
3686 channel->founder_passwd_len = tmp_len;
3689 silc_auth_payload_free(auth);
3693 if (chl->mode & SILC_CHANNEL_UMODE_CHANFO) {
3694 if (channel->mode & SILC_CHANNEL_MODE_FOUNDER_AUTH) {
3695 if (channel->founder_key)
3696 silc_pkcs_public_key_free(channel->founder_key);
3697 if (channel->founder_passwd) {
3698 silc_free(channel->founder_passwd);
3699 channel->founder_passwd = NULL;
3705 /* Finally, set the mode */
3706 channel->mode = mode_mask;
3708 /* Send CMODE_CHANGE notify */
3709 cidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
3710 silc_server_send_notify_to_channel(server, NULL, channel, FALSE,
3711 SILC_NOTIFY_TYPE_CMODE_CHANGE, 4,
3712 cidp->data, cidp->len,
3714 cipher, cipher ? strlen(cipher) : 0,
3715 hmac, hmac ? strlen(hmac) : 0);
3717 /* Set CMODE notify type to network */
3718 if (!server->standalone)
3719 silc_server_send_notify_cmode(server, server->router->connection,
3720 server->server_type == SILC_ROUTER ?
3721 TRUE : FALSE, channel,
3722 mode_mask, client->id, SILC_ID_CLIENT,
3725 /* Send command reply to sender */
3726 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_CMODE,
3727 SILC_STATUS_OK, ident, 1,
3729 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
3730 packet->data, packet->len, FALSE);
3732 silc_buffer_free(packet);
3733 silc_free(channel_id);
3737 silc_server_command_free(cmd);
3740 /* Server side of CUMODE command. Changes client's mode on a channel. */
3742 SILC_SERVER_CMD_FUNC(cumode)
3744 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
3745 SilcServer server = cmd->server;
3746 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
3747 SilcIDListData idata = (SilcIDListData)client;
3748 SilcChannelID *channel_id;
3749 SilcClientID *client_id;
3750 SilcChannelEntry channel;
3751 SilcClientEntry target_client;
3752 SilcChannelClientEntry chl;
3753 SilcBuffer packet, idp;
3754 unsigned char *tmp_id, *tmp_ch_id, *tmp_mask;
3755 uint32 target_mask, sender_mask = 0, tmp_len, tmp_ch_len;
3757 uint16 ident = silc_command_get_ident(cmd->payload);
3759 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_CUMODE, cmd, 3, 4);
3761 /* Get Channel ID */
3762 tmp_ch_id = silc_argument_get_arg_type(cmd->args, 1, &tmp_ch_len);
3764 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3765 SILC_STATUS_ERR_NO_CHANNEL_ID);
3768 channel_id = silc_id_payload_parse_id(tmp_ch_id, tmp_ch_len);
3770 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3771 SILC_STATUS_ERR_NO_CHANNEL_ID);
3775 /* Get channel entry */
3776 channel = silc_idlist_find_channel_by_id(server->local_list,
3779 channel = silc_idlist_find_channel_by_id(server->global_list,
3782 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3783 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
3788 /* Check whether sender is on the channel */
3789 if (!silc_server_client_on_channel(client, channel)) {
3790 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3791 SILC_STATUS_ERR_NOT_ON_CHANNEL);
3795 /* Check that client has rights to change other's rights */
3796 silc_hash_table_find(channel->user_list, client, NULL, (void *)&chl);
3797 sender_mask = chl->mode;
3799 /* Get the target client's channel mode mask */
3800 tmp_mask = silc_argument_get_arg_type(cmd->args, 2, NULL);
3802 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3803 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3806 SILC_GET32_MSB(target_mask, tmp_mask);
3808 /* Get target Client ID */
3809 tmp_id = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
3811 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3812 SILC_STATUS_ERR_NO_CLIENT_ID);
3815 client_id = silc_id_payload_parse_id(tmp_id, tmp_len);
3817 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3818 SILC_STATUS_ERR_NO_CLIENT_ID);
3822 /* Get target client's entry */
3823 target_client = silc_idlist_find_client_by_id(server->local_list,
3825 if (!target_client) {
3826 target_client = silc_idlist_find_client_by_id(server->global_list,
3830 if (target_client != client &&
3831 !(sender_mask & SILC_CHANNEL_UMODE_CHANFO) &&
3832 !(sender_mask & SILC_CHANNEL_UMODE_CHANOP)) {
3833 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3834 SILC_STATUS_ERR_NO_CHANNEL_PRIV);
3838 /* Check whether target client is on the channel */
3839 if (target_client != client) {
3840 if (!silc_server_client_on_channel(target_client, channel)) {
3841 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3842 SILC_STATUS_ERR_USER_NOT_ON_CHANNEL);
3846 /* Get entry to the channel user list */
3847 silc_hash_table_find(channel->user_list, target_client, NULL,
3855 /* If the target client is founder, no one else can change their mode
3857 if (chl->mode & SILC_CHANNEL_UMODE_CHANFO && chl->client != target_client) {
3858 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3859 SILC_STATUS_ERR_NOT_YOU);
3863 if (target_mask & SILC_CHANNEL_UMODE_CHANFO) {
3864 /* The client tries to claim the founder rights. */
3865 unsigned char *tmp_auth;
3866 uint32 tmp_auth_len, auth_len;
3869 if (target_client != client) {
3870 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3871 SILC_STATUS_ERR_NOT_YOU);
3875 if (!(channel->mode & SILC_CHANNEL_MODE_FOUNDER_AUTH) ||
3876 !channel->founder_key) {
3877 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3878 SILC_STATUS_ERR_NOT_YOU);
3882 tmp_auth = silc_argument_get_arg_type(cmd->args, 4, &tmp_auth_len);
3884 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3885 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3889 auth = (channel->founder_method == SILC_AUTH_PASSWORD ?
3890 (void *)channel->founder_passwd : (void *)channel->founder_key);
3891 auth_len = (channel->founder_method == SILC_AUTH_PASSWORD ?
3892 channel->founder_passwd_len : 0);
3894 if (!silc_auth_verify_data(tmp_auth, tmp_auth_len,
3895 channel->founder_method, auth, auth_len,
3896 idata->hash, client->id, SILC_ID_CLIENT)) {
3897 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3898 SILC_STATUS_ERR_AUTH_FAILED);
3902 sender_mask = chl->mode |= SILC_CHANNEL_UMODE_CHANFO;
3905 if (chl->mode & SILC_CHANNEL_UMODE_CHANFO) {
3906 if (target_client == client) {
3907 /* Remove channel founder rights from itself */
3908 chl->mode &= ~SILC_CHANNEL_UMODE_CHANFO;
3911 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3912 SILC_STATUS_ERR_NOT_YOU);
3918 if (target_mask & SILC_CHANNEL_UMODE_CHANOP) {
3919 /* Promote to operator */
3920 if (!(chl->mode & SILC_CHANNEL_UMODE_CHANOP)) {
3921 if (!(sender_mask & SILC_CHANNEL_UMODE_CHANOP) &&
3922 !(sender_mask & SILC_CHANNEL_UMODE_CHANFO)) {
3923 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3924 SILC_STATUS_ERR_NO_CHANNEL_PRIV);
3928 chl->mode |= SILC_CHANNEL_UMODE_CHANOP;
3932 if (chl->mode & SILC_CHANNEL_UMODE_CHANOP) {
3933 if (!(sender_mask & SILC_CHANNEL_UMODE_CHANOP) &&
3934 !(sender_mask & SILC_CHANNEL_UMODE_CHANFO)) {
3935 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3936 SILC_STATUS_ERR_NO_CHANNEL_PRIV);
3940 /* Demote to normal user */
3941 chl->mode &= ~SILC_CHANNEL_UMODE_CHANOP;
3946 idp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
3947 tmp_id = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
3949 /* Send notify to channel, notify only if mode was actually changed. */
3951 silc_server_send_notify_to_channel(server, NULL, channel, FALSE,
3952 SILC_NOTIFY_TYPE_CUMODE_CHANGE, 3,
3953 idp->data, idp->len,
3957 /* Set CUMODE notify type to network */
3958 if (!server->standalone)
3959 silc_server_send_notify_cumode(server, server->router->connection,
3960 server->server_type == SILC_ROUTER ?
3961 TRUE : FALSE, channel,
3962 target_mask, client->id,
3967 /* Send command reply to sender */
3968 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_CUMODE,
3969 SILC_STATUS_OK, ident, 2,
3971 3, tmp_id, tmp_len);
3972 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
3973 packet->data, packet->len, FALSE);
3975 silc_buffer_free(packet);
3976 silc_free(channel_id);
3977 silc_free(client_id);
3978 silc_buffer_free(idp);
3981 silc_server_command_free(cmd);
3984 /* Server side of KICK command. Kicks client out of channel. */
3986 SILC_SERVER_CMD_FUNC(kick)
3988 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
3989 SilcServer server = cmd->server;
3990 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
3991 SilcClientEntry target_client;
3992 SilcChannelID *channel_id;
3993 SilcClientID *client_id;
3994 SilcChannelEntry channel;
3995 SilcChannelClientEntry chl;
3998 unsigned char *tmp, *comment;
4000 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_LEAVE, cmd, 1, 3);
4002 /* Get Channel ID */
4003 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
4005 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4006 SILC_STATUS_ERR_NO_CHANNEL_ID);
4009 channel_id = silc_id_payload_parse_id(tmp, tmp_len);
4011 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4012 SILC_STATUS_ERR_NO_CHANNEL_ID);
4016 /* Get channel entry */
4017 channel = silc_idlist_find_channel_by_id(server->local_list,
4020 channel = silc_idlist_find_channel_by_id(server->local_list,
4023 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4024 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
4029 /* Check whether sender is on the channel */
4030 if (!silc_server_client_on_channel(client, channel)) {
4031 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4032 SILC_STATUS_ERR_NOT_ON_CHANNEL);
4036 /* Check that the kicker is channel operator or channel founder */
4037 silc_hash_table_find(channel->user_list, client, NULL, (void *)&chl);
4038 if (chl->mode == SILC_CHANNEL_UMODE_NONE) {
4039 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4040 SILC_STATUS_ERR_NO_CHANNEL_PRIV);
4044 /* Get target Client ID */
4045 tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
4047 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4048 SILC_STATUS_ERR_NO_CLIENT_ID);
4051 client_id = silc_id_payload_parse_id(tmp, tmp_len);
4053 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4054 SILC_STATUS_ERR_NO_CLIENT_ID);
4058 /* Get target client's entry */
4059 target_client = silc_idlist_find_client_by_id(server->local_list,
4061 if (!target_client) {
4062 target_client = silc_idlist_find_client_by_id(server->global_list,
4066 /* Check that the target client is not channel founder. Channel founder
4067 cannot be kicked from the channel. */
4068 silc_hash_table_find(channel->user_list, target_client, NULL, (void *)&chl);
4069 if (chl->mode & SILC_CHANNEL_UMODE_CHANFO) {
4070 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4071 SILC_STATUS_ERR_NO_CHANNEL_FOPRIV);
4075 /* Check whether target client is on the channel */
4076 if (!silc_server_client_on_channel(target_client, channel)) {
4077 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4078 SILC_STATUS_ERR_USER_NOT_ON_CHANNEL);
4084 comment = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
4088 /* Send command reply to sender */
4089 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4092 /* Send KICKED notify to local clients on the channel */
4093 idp = silc_id_payload_encode(target_client->id, SILC_ID_CLIENT);
4094 silc_server_send_notify_to_channel(server, NULL, channel, FALSE,
4095 SILC_NOTIFY_TYPE_KICKED,
4097 idp->data, idp->len,
4098 comment, comment ? strlen(comment) : 0);
4099 silc_buffer_free(idp);
4101 /* Remove the client from the channel. If the channel does not exist
4102 after removing the client then the client kicked itself off the channel
4103 and we don't have to send anything after that. */
4104 if (!silc_server_remove_from_one_channel(server, NULL, channel,
4105 target_client, FALSE))
4108 /* Send KICKED notify to primary route */
4109 if (!server->standalone)
4110 silc_server_send_notify_kicked(server, server->router->connection,
4111 server->server_type == SILC_ROUTER ?
4112 TRUE : FALSE, channel,
4113 target_client->id, comment);
4115 if (!(channel->mode & SILC_CHANNEL_MODE_PRIVKEY)) {
4116 /* Re-generate channel key */
4117 silc_server_create_channel_key(server, channel, 0);
4119 /* Send the channel key to the channel. The key of course is not sent
4120 to the client who was kicked off the channel. */
4121 silc_server_send_channel_key(server, target_client->connection, channel,
4122 server->server_type == SILC_ROUTER ?
4123 FALSE : !server->standalone);
4127 silc_server_command_free(cmd);
4130 /* Server side of OPER command. Client uses this comand to obtain server
4131 operator privileges to this server/router. */
4133 SILC_SERVER_CMD_FUNC(oper)
4135 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4136 SilcServer server = cmd->server;
4137 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
4138 unsigned char *username, *auth;
4140 SilcServerConfigSectionAdminConnection *admin;
4141 SilcIDListData idata = (SilcIDListData)client;
4143 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_OPER, cmd, 1, 2);
4145 if (!client || cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
4148 /* Get the username */
4149 username = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
4151 silc_server_command_send_status_reply(cmd, SILC_COMMAND_OPER,
4152 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
4156 /* Get the admin configuration */
4157 admin = silc_server_config_find_admin(server->config, cmd->sock->ip,
4158 username, client->nickname);
4160 admin = silc_server_config_find_admin(server->config, cmd->sock->hostname,
4161 username, client->nickname);
4163 silc_server_command_send_status_reply(cmd, SILC_COMMAND_OPER,
4164 SILC_STATUS_ERR_AUTH_FAILED);
4169 /* Get the authentication payload */
4170 auth = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
4172 silc_server_command_send_status_reply(cmd, SILC_COMMAND_OPER,
4173 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
4177 /* Verify the authentication data */
4178 if (!silc_auth_verify_data(auth, tmp_len, admin->auth_meth,
4179 admin->auth_data, admin->auth_data_len,
4180 idata->hash, client->id, SILC_ID_CLIENT)) {
4181 silc_server_command_send_status_reply(cmd, SILC_COMMAND_OPER,
4182 SILC_STATUS_ERR_AUTH_FAILED);
4186 /* Client is now server operator */
4187 client->mode |= SILC_UMODE_SERVER_OPERATOR;
4189 /* Send UMODE change to primary router */
4190 if (!server->standalone)
4191 silc_server_send_notify_umode(server, server->router->connection, TRUE,
4192 client->id, client->mode);
4194 /* Send reply to the sender */
4195 silc_server_command_send_status_reply(cmd, SILC_COMMAND_OPER,
4199 silc_server_command_free(cmd);
4202 /* Server side of SILCOPER command. Client uses this comand to obtain router
4203 operator privileges to this router. */
4205 SILC_SERVER_CMD_FUNC(silcoper)
4207 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4208 SilcServer server = cmd->server;
4209 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
4210 unsigned char *username, *auth;
4212 SilcServerConfigSectionAdminConnection *admin;
4213 SilcIDListData idata = (SilcIDListData)client;
4215 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_SILCOPER, cmd, 1, 2);
4217 if (server->server_type == SILC_SERVER)
4220 if (!client || cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
4223 /* Get the username */
4224 username = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
4226 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
4227 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
4231 /* Get the admin configuration */
4232 admin = silc_server_config_find_admin(server->config, cmd->sock->ip,
4233 username, client->nickname);
4235 admin = silc_server_config_find_admin(server->config, cmd->sock->hostname,
4236 username, client->nickname);
4238 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
4239 SILC_STATUS_ERR_AUTH_FAILED);
4244 /* Get the authentication payload */
4245 auth = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
4247 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
4248 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
4252 /* Verify the authentication data */
4253 if (!silc_auth_verify_data(auth, tmp_len, admin->auth_meth,
4254 admin->auth_data, admin->auth_data_len,
4255 idata->hash, client->id, SILC_ID_CLIENT)) {
4256 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
4257 SILC_STATUS_ERR_AUTH_FAILED);
4261 /* Client is now router operator */
4262 client->mode |= SILC_UMODE_ROUTER_OPERATOR;
4264 /* Send UMODE change to primary router */
4265 if (!server->standalone)
4266 silc_server_send_notify_umode(server, server->router->connection, TRUE,
4267 client->id, client->mode);
4269 /* Send reply to the sender */
4270 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
4274 silc_server_command_free(cmd);
4277 /* Server side command of CONNECT. Connects us to the specified remote
4278 server or router. */
4280 SILC_SERVER_CMD_FUNC(connect)
4282 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4283 SilcServer server = cmd->server;
4284 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
4285 unsigned char *tmp, *host;
4287 uint32 port = SILC_PORT;
4289 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_CONNECT, cmd, 1, 2);
4291 if (!client || cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
4294 /* Check whether client has the permissions. */
4295 if (client->mode == SILC_UMODE_NONE) {
4296 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CONNECT,
4297 SILC_STATUS_ERR_NO_SERVER_PRIV);
4301 if (server->server_type == SILC_ROUTER &&
4302 client->mode & SILC_UMODE_SERVER_OPERATOR) {
4303 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CONNECT,
4304 SILC_STATUS_ERR_NO_ROUTER_PRIV);
4308 /* Get the remote server */
4309 host = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
4311 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CONNECT,
4312 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
4317 tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
4319 SILC_GET32_MSB(port, tmp);
4321 /* Create the connection. It is done with timeout and is async. */
4322 silc_server_create_connection(server, host, port);
4324 /* Send reply to the sender */
4325 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CONNECT,
4329 silc_server_command_free(cmd);
4332 /* Server side of command BAN. This is used to manage the ban list of the
4333 channel. To add clients and remove clients from the ban list. */
4335 SILC_SERVER_CMD_FUNC(ban)
4337 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4338 SilcServer server = cmd->server;
4339 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
4341 SilcChannelEntry channel;
4342 SilcChannelClientEntry chl;
4343 SilcChannelID *channel_id = NULL;
4344 unsigned char *id, *add, *del;
4345 uint32 id_len, tmp_len;
4346 uint16 ident = silc_command_get_ident(cmd->payload);
4348 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
4351 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_BAN, cmd, 0, 3);
4353 /* Get Channel ID */
4354 id = silc_argument_get_arg_type(cmd->args, 1, &id_len);
4356 channel_id = silc_id_payload_parse_id(id, id_len);
4358 silc_server_command_send_status_reply(cmd, SILC_COMMAND_BAN,
4359 SILC_STATUS_ERR_NO_CHANNEL_ID);
4364 /* Get channel entry. The server must know about the channel since the
4365 client is expected to be on the channel. */
4366 channel = silc_idlist_find_channel_by_id(server->local_list,
4369 channel = silc_idlist_find_channel_by_id(server->global_list,
4372 silc_server_command_send_status_reply(cmd, SILC_COMMAND_BAN,
4373 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
4378 /* Check whether this client is on the channel */
4379 if (!silc_server_client_on_channel(client, channel)) {
4380 silc_server_command_send_status_reply(cmd, SILC_COMMAND_BAN,
4381 SILC_STATUS_ERR_NOT_ON_CHANNEL);
4385 /* Get entry to the channel user list */
4386 silc_hash_table_find(channel->user_list, client, NULL, (void *)&chl);
4388 /* The client must be at least channel operator. */
4389 if (!(chl->mode & SILC_CHANNEL_UMODE_CHANOP)) {
4390 silc_server_command_send_status_reply(cmd, SILC_COMMAND_BAN,
4391 SILC_STATUS_ERR_NO_CHANNEL_PRIV);
4395 /* Get the new ban and add it to the ban list */
4396 add = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
4398 if (!channel->ban_list)
4399 channel->ban_list = silc_calloc(tmp_len + 2, sizeof(*channel->ban_list));
4401 channel->ban_list = silc_realloc(channel->ban_list,
4402 sizeof(*channel->ban_list) *
4404 strlen(channel->ban_list) + 2));
4405 if (add[tmp_len - 1] == ',')
4406 add[tmp_len - 1] = '\0';
4408 strncat(channel->ban_list, add, tmp_len);
4409 strncat(channel->ban_list, ",", 1);
4412 /* Get the ban to be removed and remove it from the list */
4413 del = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
4414 if (del && channel->ban_list) {
4415 char *start, *end, *n;
4417 if (!strncmp(channel->ban_list, del, strlen(channel->ban_list) - 1)) {
4418 silc_free(channel->ban_list);
4419 channel->ban_list = NULL;
4421 start = strstr(channel->ban_list, del);
4422 if (start && strlen(start) >= tmp_len) {
4423 end = start + tmp_len;
4424 n = silc_calloc(strlen(channel->ban_list) - tmp_len, sizeof(*n));
4425 strncat(n, channel->ban_list, start - channel->ban_list);
4426 strncat(n, end + 1, ((channel->ban_list + strlen(channel->ban_list)) -
4428 silc_free(channel->ban_list);
4429 channel->ban_list = n;
4434 /* Send the BAN notify type to our primary router. */
4435 if (!server->standalone && (add || del))
4436 silc_server_send_notify_ban(server, server->router->connection,
4437 server->server_type == SILC_ROUTER ?
4438 TRUE : FALSE, channel, add, del);
4440 /* Send the reply back to the client */
4441 if (channel->ban_list)
4443 silc_command_reply_payload_encode_va(SILC_COMMAND_BAN,
4444 SILC_STATUS_OK, ident, 2,
4446 3, channel->ban_list,
4447 strlen(channel->ban_list) - 1);
4450 silc_command_reply_payload_encode_va(SILC_COMMAND_BAN,
4451 SILC_STATUS_OK, ident, 1,
4454 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
4455 packet->data, packet->len, FALSE);
4457 silc_buffer_free(packet);
4461 silc_free(channel_id);
4462 silc_server_command_free(cmd);
4465 /* Server side command of CLOSE. Closes connection to a specified server. */
4467 SILC_SERVER_CMD_FUNC(close)
4469 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4470 SilcServer server = cmd->server;
4471 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
4472 SilcServerEntry server_entry;
4473 SilcSocketConnection sock;
4476 unsigned char *name;
4477 uint32 port = SILC_PORT;
4479 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_CLOSE, cmd, 1, 2);
4481 if (!client || cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
4484 /* Check whether client has the permissions. */
4485 if (client->mode == SILC_UMODE_NONE) {
4486 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CLOSE,
4487 SILC_STATUS_ERR_NO_SERVER_PRIV);
4491 /* Get the remote server */
4492 name = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
4494 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CLOSE,
4495 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
4500 tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
4502 SILC_GET32_MSB(port, tmp);
4504 server_entry = silc_idlist_find_server_by_conn(server->local_list,
4506 if (!server_entry) {
4507 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CLOSE,
4508 SILC_STATUS_ERR_NO_SERVER_ID);
4512 /* Send reply to the sender */
4513 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CLOSE,
4516 /* Close the connection to the server */
4517 sock = (SilcSocketConnection)server_entry->connection;
4518 silc_server_free_sock_user_data(server, sock);
4519 silc_server_close_connection(server, sock);
4522 silc_server_command_free(cmd);
4525 /* Server side command of SHUTDOWN. Shutdowns the server and closes all
4526 active connections. */
4528 SILC_SERVER_CMD_FUNC(shutdown)
4530 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4531 SilcServer server = cmd->server;
4532 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
4534 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_SHUTDOWN, cmd, 0, 0);
4536 if (!client || cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
4539 /* Check whether client has the permission. */
4540 if (client->mode == SILC_UMODE_NONE) {
4541 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SHUTDOWN,
4542 SILC_STATUS_ERR_NO_SERVER_PRIV);
4546 /* Send reply to the sender */
4547 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SHUTDOWN,
4550 /* Then, gracefully, or not, bring the server down. */
4551 silc_server_stop(server);
4555 silc_server_command_free(cmd);
4558 /* Server side command of LEAVE. Removes client from a channel. */
4560 SILC_SERVER_CMD_FUNC(leave)
4562 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4563 SilcServer server = cmd->server;
4564 SilcSocketConnection sock = cmd->sock;
4565 SilcClientEntry id_entry = (SilcClientEntry)cmd->sock->user_data;
4566 SilcChannelID *id = NULL;
4567 SilcChannelEntry channel;
4571 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_LEAVE, cmd, 1, 2);
4573 /* Get Channel ID */
4574 tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
4576 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
4577 SILC_STATUS_ERR_NO_CHANNEL_ID);
4580 id = silc_id_payload_parse_id(tmp, len);
4582 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
4583 SILC_STATUS_ERR_NO_CHANNEL_ID);
4587 /* Get channel entry */
4588 channel = silc_idlist_find_channel_by_id(server->local_list, id, NULL);
4590 channel = silc_idlist_find_channel_by_id(server->global_list, id, NULL);
4592 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
4593 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
4598 /* Check whether this client is on the channel */
4599 if (!silc_server_client_on_channel(id_entry, channel)) {
4600 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
4601 SILC_STATUS_ERR_NOT_ON_CHANNEL);
4605 /* Notify routers that they should remove this client from their list
4606 of clients on the channel. Send LEAVE notify type. */
4607 if (!server->standalone)
4608 silc_server_send_notify_leave(server, server->router->connection,
4609 server->server_type == SILC_ROUTER ?
4610 TRUE : FALSE, channel, id_entry->id);
4612 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
4615 /* Remove client from channel */
4616 if (!silc_server_remove_from_one_channel(server, sock, channel, id_entry,
4618 /* If the channel does not exist anymore we won't send anything */
4621 if (!(channel->mode & SILC_CHANNEL_MODE_PRIVKEY)) {
4622 /* Re-generate channel key */
4623 silc_server_create_channel_key(server, channel, 0);
4625 /* Send the channel key */
4626 silc_server_send_channel_key(server, NULL, channel,
4627 server->server_type == SILC_ROUTER ?
4628 FALSE : !server->standalone);
4634 silc_server_command_free(cmd);
4637 /* Server side of command USERS. Resolves clients and their USERS currently
4638 joined on the requested channel. The list of Client ID's and their modes
4639 on the channel is sent back. */
4641 SILC_SERVER_CMD_FUNC(users)
4643 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4644 SilcServer server = cmd->server;
4645 SilcChannelEntry channel;
4648 unsigned char *channel_id;
4649 uint32 channel_id_len;
4650 SilcBuffer client_id_list;
4651 SilcBuffer client_mode_list;
4652 unsigned char lc[4];
4653 uint32 list_count = 0;
4654 uint16 ident = silc_command_get_ident(cmd->payload);
4656 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_USERS, cmd, 1, 1);
4658 /* Get Channel ID */
4659 channel_id = silc_argument_get_arg_type(cmd->args, 1, &channel_id_len);
4661 silc_server_command_send_status_reply(cmd, SILC_COMMAND_USERS,
4662 SILC_STATUS_ERR_NO_CHANNEL_ID);
4665 id = silc_id_payload_parse_id(channel_id, channel_id_len);
4667 silc_server_command_send_status_reply(cmd, SILC_COMMAND_USERS,
4668 SILC_STATUS_ERR_NO_CHANNEL_ID);
4672 /* If we are server and we don't know about this channel we will send
4673 the command to our router. If we know about the channel then we also
4674 have the list of users already. */
4675 channel = silc_idlist_find_channel_by_id(server->local_list, id, NULL);
4677 if (server->server_type == SILC_SERVER && !server->standalone &&
4681 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
4682 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
4684 /* Send USERS command */
4685 silc_server_packet_send(server, server->router->connection,
4686 SILC_PACKET_COMMAND, cmd->packet->flags,
4687 tmpbuf->data, tmpbuf->len, TRUE);
4689 /* Reprocess this packet after received reply */
4690 silc_server_command_pending(server, SILC_COMMAND_USERS,
4691 silc_command_get_ident(cmd->payload),
4692 silc_server_command_destructor,
4693 silc_server_command_users,
4694 silc_server_command_dup(cmd));
4695 cmd->pending = TRUE;
4696 silc_command_set_ident(cmd->payload, ident);
4698 silc_buffer_free(tmpbuf);
4703 /* We are router and we will check the global list as well. */
4704 channel = silc_idlist_find_channel_by_id(server->global_list, id, NULL);
4706 /* Channel really does not exist */
4707 silc_server_command_send_status_reply(cmd, SILC_COMMAND_USERS,
4708 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
4713 /* Get the users list */
4714 silc_server_get_users_on_channel(server, channel, &client_id_list,
4715 &client_mode_list, &list_count);
4718 SILC_PUT32_MSB(list_count, lc);
4721 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_USERS,
4722 SILC_STATUS_OK, ident, 4,
4723 2, channel_id, channel_id_len,
4725 4, client_id_list->data,
4726 client_id_list->len,
4727 5, client_mode_list->data,
4728 client_mode_list->len);
4729 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
4730 packet->data, packet->len, FALSE);
4732 silc_buffer_free(packet);
4733 silc_buffer_free(client_id_list);
4734 silc_buffer_free(client_mode_list);
4738 silc_server_command_free(cmd);
4741 /* Server side of command GETKEY. This fetches the client's public key
4742 from the server where to the client is connected. */
4744 SILC_SERVER_CMD_FUNC(getkey)
4746 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4747 SilcServer server = cmd->server;
4749 SilcClientEntry client;
4750 SilcServerEntry server_entry;
4751 SilcClientID *client_id = NULL;
4752 SilcServerID *server_id = NULL;
4753 SilcIDPayload idp = NULL;
4754 uint16 ident = silc_command_get_ident(cmd->payload);
4760 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
4762 silc_server_command_send_status_reply(cmd, SILC_COMMAND_GETKEY,
4763 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
4766 idp = silc_id_payload_parse_data(tmp, tmp_len);
4768 silc_server_command_send_status_reply(cmd, SILC_COMMAND_GETKEY,
4769 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
4773 id_type = silc_id_payload_get_type(idp);
4774 if (id_type == SILC_ID_CLIENT) {
4775 client_id = silc_id_payload_get_id(idp);
4777 /* If the client is not found from local list there is no chance it
4778 would be locally connected client so send the command further. */
4779 client = silc_idlist_find_client_by_id(server->local_list,
4782 if ((!client && !cmd->pending && !server->standalone) ||
4783 (client && !client->connection)) {
4786 SilcSocketConnection dest_sock;
4788 dest_sock = silc_server_get_client_route(server, NULL, 0,
4793 old_ident = silc_command_get_ident(cmd->payload);
4794 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
4795 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
4797 silc_server_packet_send(server, dest_sock,
4798 SILC_PACKET_COMMAND, cmd->packet->flags,
4799 tmpbuf->data, tmpbuf->len, TRUE);
4801 /* Reprocess this packet after received reply from router */
4802 silc_server_command_pending(server, SILC_COMMAND_GETKEY,
4803 silc_command_get_ident(cmd->payload),
4804 silc_server_command_destructor,
4805 silc_server_command_getkey,
4806 silc_server_command_dup(cmd));
4807 cmd->pending = TRUE;
4809 silc_command_set_ident(cmd->payload, old_ident);
4810 silc_buffer_free(tmpbuf);
4814 if (!client && cmd->pending) {
4815 silc_server_command_send_status_reply(cmd, SILC_COMMAND_GETKEY,
4816 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID);
4820 /* The client is locally connected, just get the public key and
4822 tmp = silc_pkcs_public_key_encode(client->data.public_key, &tmp_len);
4823 pk = silc_buffer_alloc(4 + tmp_len);
4824 silc_buffer_pull_tail(pk, SILC_BUFFER_END(pk));
4825 silc_buffer_format(pk,
4826 SILC_STR_UI_SHORT(tmp_len),
4827 SILC_STR_UI_SHORT(SILC_SKE_PK_TYPE_SILC),
4828 SILC_STR_UI_XNSTRING(tmp, tmp_len),
4832 } else if (id_type == SILC_ID_SERVER) {
4833 server_id = silc_id_payload_get_id(idp);
4835 /* If the server is not found from local list there is no chance it
4836 would be locally connected server so send the command further. */
4837 server_entry = silc_idlist_find_server_by_id(server->local_list,
4840 if ((!server_entry && !cmd->pending && !server->standalone) ||
4841 (server_entry && !server_entry->connection)) {
4845 old_ident = silc_command_get_ident(cmd->payload);
4846 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
4847 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
4849 silc_server_packet_send(server, server->router->connection,
4850 SILC_PACKET_COMMAND, cmd->packet->flags,
4851 tmpbuf->data, tmpbuf->len, TRUE);
4853 /* Reprocess this packet after received reply from router */
4854 silc_server_command_pending(server, SILC_COMMAND_GETKEY,
4855 silc_command_get_ident(cmd->payload),
4856 silc_server_command_destructor,
4857 silc_server_command_getkey,
4858 silc_server_command_dup(cmd));
4859 cmd->pending = TRUE;
4861 silc_command_set_ident(cmd->payload, old_ident);
4862 silc_buffer_free(tmpbuf);
4866 if (!server_entry && cmd->pending) {
4867 silc_server_command_send_status_reply(cmd, SILC_COMMAND_GETKEY,
4868 SILC_STATUS_ERR_NO_SUCH_SERVER_ID);
4872 /* The client is locally connected, just get the public key and
4874 tmp = silc_pkcs_public_key_encode(server_entry->data.public_key, &tmp_len);
4875 pk = silc_buffer_alloc(4 + tmp_len);
4876 silc_buffer_pull_tail(pk, SILC_BUFFER_END(pk));
4877 silc_buffer_format(pk,
4878 SILC_STR_UI_SHORT(tmp_len),
4879 SILC_STR_UI_SHORT(SILC_SKE_PK_TYPE_SILC),
4880 SILC_STR_UI_XNSTRING(tmp, tmp_len),
4887 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
4888 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_GETKEY,
4889 SILC_STATUS_OK, ident, 2,
4891 3, pk->data, pk->len);
4892 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
4893 packet->data, packet->len, FALSE);
4894 silc_buffer_free(packet);
4895 silc_buffer_free(pk);
4899 silc_id_payload_free(idp);
4900 silc_free(client_id);
4901 silc_free(server_id);
4902 silc_server_command_free(cmd);