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_payload_free(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[256], uh[256];
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 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
2226 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID);
2230 memset(invite, 0, sizeof(invite));
2231 strncat(invite, dest->nickname, strlen(dest->nickname));
2232 strncat(invite, "!", 1);
2233 strncat(invite, dest->username, strlen(dest->username));
2234 if (!strchr(dest->username, '@')) {
2235 strncat(invite, "@", 1);
2236 strncat(invite, cmd->sock->hostname, strlen(cmd->sock->hostname));
2239 len = strlen(invite);
2240 if (!channel->invite_list)
2241 channel->invite_list = silc_calloc(len + 2,
2242 sizeof(*channel->invite_list));
2244 channel->invite_list = silc_realloc(channel->invite_list,
2245 sizeof(*channel->invite_list) *
2247 strlen(channel->invite_list) + 2));
2248 strncat(channel->invite_list, invite, len);
2249 strncat(channel->invite_list, ",", 1);
2251 /* Send notify to the client that is invited to the channel */
2252 idp = silc_id_payload_encode(channel_id, SILC_ID_CHANNEL);
2253 idp2 = silc_id_payload_encode(sender->id, SILC_ID_CLIENT);
2254 silc_server_send_notify_dest(server, dest_sock, FALSE, dest_id,
2256 SILC_NOTIFY_TYPE_INVITE, 3,
2257 idp->data, idp->len,
2258 channel->channel_name,
2259 strlen(channel->channel_name),
2260 idp2->data, idp2->len);
2261 silc_buffer_free(idp);
2262 silc_buffer_free(idp2);
2265 /* Add the client to the invite list of the channel */
2266 add = silc_argument_get_arg_type(cmd->args, 3, &len);
2268 if (!channel->invite_list)
2269 channel->invite_list = silc_calloc(len + 2,
2270 sizeof(*channel->invite_list));
2272 channel->invite_list = silc_realloc(channel->invite_list,
2273 sizeof(*channel->invite_list) *
2275 strlen(channel->invite_list) + 2));
2276 if (add[len - 1] == ',')
2277 add[len - 1] = '\0';
2279 strncat(channel->invite_list, add, len);
2280 strncat(channel->invite_list, ",", 1);
2283 /* Get the invite to be removed and remove it from the list */
2284 del = silc_argument_get_arg_type(cmd->args, 4, &len);
2285 if (del && channel->invite_list) {
2286 char *start, *end, *n;
2288 if (!strncmp(channel->invite_list, del,
2289 strlen(channel->invite_list) - 1)) {
2290 silc_free(channel->invite_list);
2291 channel->invite_list = NULL;
2293 start = strstr(channel->invite_list, del);
2294 if (start && strlen(start) >= len) {
2296 n = silc_calloc(strlen(channel->invite_list) - len, sizeof(*n));
2297 strncat(n, channel->invite_list, start - channel->invite_list);
2298 strncat(n, end + 1, ((channel->invite_list +
2299 strlen(channel->invite_list)) - end) - 1);
2300 silc_free(channel->invite_list);
2301 channel->invite_list = n;
2306 /* Send notify to the primary router */
2307 if (!server->standalone)
2308 silc_server_send_notify_invite(server, server->router->connection,
2309 server->server_type == SILC_ROUTER ?
2310 TRUE : FALSE, channel,
2311 sender->id, add, del);
2313 /* Send command reply */
2314 tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
2318 silc_command_reply_payload_encode_va(SILC_COMMAND_INVITE,
2319 SILC_STATUS_OK, ident, 2,
2321 3, channel->invite_list,
2322 channel->invite_list ?
2323 strlen(channel->invite_list) : 0);
2326 silc_command_reply_payload_encode_va(SILC_COMMAND_INVITE,
2327 SILC_STATUS_OK, ident, 1,
2329 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
2330 packet->data, packet->len, FALSE);
2331 silc_buffer_free(packet);
2337 silc_free(channel_id);
2338 silc_server_command_free(cmd);
2343 SilcSocketConnection sock;
2347 /* Quits connection to client. This gets called if client won't
2348 close the connection even when it has issued QUIT command. */
2350 SILC_TASK_CALLBACK(silc_server_command_quit_cb)
2352 QuitInternal q = (QuitInternal)context;
2354 /* Free all client specific data, such as client entry and entires
2355 on channels this client may be on. */
2356 silc_server_free_client_data(q->server, q->sock, q->sock->user_data,
2358 q->sock->user_data = NULL;
2360 /* Close the connection on our side */
2361 silc_server_close_connection(q->server, q->sock);
2363 silc_free(q->signoff);
2367 /* Quits SILC session. This is the normal way to disconnect client. */
2369 SILC_SERVER_CMD_FUNC(quit)
2371 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2372 SilcServer server = cmd->server;
2373 SilcSocketConnection sock = cmd->sock;
2375 unsigned char *tmp = NULL;
2378 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_QUIT, cmd, 0, 1);
2380 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
2383 /* Get destination ID */
2384 tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
2388 q = silc_calloc(1, sizeof(*q));
2391 q->signoff = tmp ? strdup(tmp) : NULL;
2393 /* We quit the connection with little timeout */
2394 silc_task_register(server->timeout_queue, sock->sock,
2395 silc_server_command_quit_cb, (void *)q,
2396 0, 200000, SILC_TASK_TIMEOUT, SILC_TASK_PRI_LOW);
2399 silc_server_command_free(cmd);
2402 /* Server side of command KILL. This command is used by router operator
2403 to remove an client from the SILC Network temporarily. */
2405 SILC_SERVER_CMD_FUNC(kill)
2407 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2408 SilcServer server = cmd->server;
2409 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
2410 SilcClientEntry remote_client;
2411 SilcClientID *client_id;
2412 unsigned char *tmp, *comment;
2413 uint32 tmp_len, tmp_len2;
2415 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_KILL, cmd, 1, 2);
2417 if (!client || cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
2420 /* KILL command works only on router */
2421 if (server->server_type != SILC_ROUTER) {
2422 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
2423 SILC_STATUS_ERR_NO_ROUTER_PRIV);
2427 /* Check whether client has the permissions. */
2428 if (!(client->mode & SILC_UMODE_ROUTER_OPERATOR)) {
2429 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
2430 SILC_STATUS_ERR_NO_ROUTER_PRIV);
2434 /* Get the client ID */
2435 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
2437 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
2438 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
2441 client_id = silc_id_payload_parse_id(tmp, tmp_len);
2443 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
2444 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID);
2448 /* Get the client entry */
2449 remote_client = silc_idlist_find_client_by_id(server->local_list,
2451 if (!remote_client) {
2452 remote_client = silc_idlist_find_client_by_id(server->global_list,
2454 if (!remote_client) {
2455 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
2456 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID);
2462 comment = silc_argument_get_arg_type(cmd->args, 2, &tmp_len2);
2466 /* Send reply to the sender */
2467 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
2470 /* Send the KILL notify packets. First send it to the channel, then
2471 to our primary router and then directly to the client who is being
2472 killed right now. */
2474 /* Send KILLED notify to the channels. It is not sent to the client
2475 as it will be sent differently destined directly to the client and not
2477 silc_server_send_notify_on_channels(server, remote_client,
2478 remote_client, SILC_NOTIFY_TYPE_KILLED,
2481 comment, comment ? tmp_len2 : 0);
2483 /* Send KILLED notify to primary route */
2484 if (!server->standalone)
2485 silc_server_send_notify_killed(server, server->router->connection, TRUE,
2486 remote_client->id, comment);
2488 /* Send KILLED notify to the client directly */
2489 silc_server_send_notify_killed(server, remote_client->connection ?
2490 remote_client->connection :
2491 remote_client->router->connection, FALSE,
2492 remote_client->id, comment);
2494 /* Remove the client from all channels. This generates new keys to the
2495 channels as well. */
2496 silc_server_remove_from_channels(server, NULL, remote_client, FALSE,
2499 /* Remove the client entry, If it is locally connected then we will also
2500 disconnect the client here */
2501 if (remote_client->data.registered && remote_client->connection) {
2502 /* Remove locally conneted client */
2503 SilcSocketConnection sock = remote_client->connection;
2504 silc_server_free_client_data(server, sock, remote_client, FALSE, NULL);
2505 silc_server_close_connection(server, sock);
2507 /* Remove remote client */
2508 if (!silc_idlist_del_client(server->global_list, remote_client))
2509 silc_idlist_del_client(server->local_list, remote_client);
2513 silc_server_command_free(cmd);
2516 /* Server side of command INFO. This sends information about us to
2517 the client. If client requested specific server we will send the
2518 command to that server. */
2520 SILC_SERVER_CMD_FUNC(info)
2522 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2523 SilcServer server = cmd->server;
2524 SilcBuffer packet, idp;
2527 char *dest_server, *server_info = NULL, *server_name;
2528 uint16 ident = silc_command_get_ident(cmd->payload);
2529 SilcServerEntry entry = NULL;
2530 SilcServerID *server_id = NULL;
2532 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_INFO, cmd, 0, 2);
2534 /* Get server name */
2535 dest_server = silc_argument_get_arg_type(cmd->args, 1, NULL);
2538 tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
2540 server_id = silc_id_payload_parse_id(tmp, tmp_len);
2542 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INFO,
2543 SILC_STATUS_ERR_NO_SERVER_ID);
2549 /* Check whether we have this server cached */
2550 entry = silc_idlist_find_server_by_id(server->local_list,
2553 entry = silc_idlist_find_server_by_id(server->global_list,
2555 if (!entry && server->server_type == SILC_ROUTER) {
2556 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INFO,
2557 SILC_STATUS_ERR_NO_SUCH_SERVER);
2563 if ((!dest_server && !server_id) ||
2564 (dest_server && !cmd->pending &&
2565 !strncasecmp(dest_server, server->server_name, strlen(dest_server)))) {
2566 /* Send our reply */
2567 char info_string[256];
2569 memset(info_string, 0, sizeof(info_string));
2570 snprintf(info_string, sizeof(info_string),
2571 "location: %s server: %s admin: %s <%s>",
2572 server->config->admin_info->location,
2573 server->config->admin_info->server_type,
2574 server->config->admin_info->admin_name,
2575 server->config->admin_info->admin_email);
2577 server_info = info_string;
2578 entry = server->id_entry;
2580 /* Check whether we have this server cached */
2581 if (!entry && dest_server) {
2582 entry = silc_idlist_find_server_by_name(server->global_list,
2585 entry = silc_idlist_find_server_by_name(server->local_list,
2590 if (!cmd->pending &&
2591 server->server_type == SILC_ROUTER && entry && !entry->server_info) {
2592 /* Send to the server */
2596 old_ident = silc_command_get_ident(cmd->payload);
2597 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
2598 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
2600 silc_server_packet_send(server, entry->connection,
2601 SILC_PACKET_COMMAND, cmd->packet->flags,
2602 tmpbuf->data, tmpbuf->len, TRUE);
2604 /* Reprocess this packet after received reply from router */
2605 silc_server_command_pending(server, SILC_COMMAND_INFO,
2606 silc_command_get_ident(cmd->payload),
2607 silc_server_command_destructor,
2608 silc_server_command_info,
2609 silc_server_command_dup(cmd));
2610 cmd->pending = TRUE;
2611 silc_command_set_ident(cmd->payload, old_ident);
2612 silc_buffer_free(tmpbuf);
2616 if (!entry && !cmd->pending && !server->standalone) {
2617 /* Send to the primary router */
2621 old_ident = silc_command_get_ident(cmd->payload);
2622 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
2623 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
2625 silc_server_packet_send(server, server->router->connection,
2626 SILC_PACKET_COMMAND, cmd->packet->flags,
2627 tmpbuf->data, tmpbuf->len, TRUE);
2629 /* Reprocess this packet after received reply from router */
2630 silc_server_command_pending(server, SILC_COMMAND_INFO,
2631 silc_command_get_ident(cmd->payload),
2632 silc_server_command_destructor,
2633 silc_server_command_info,
2634 silc_server_command_dup(cmd));
2635 cmd->pending = TRUE;
2636 silc_command_set_ident(cmd->payload, old_ident);
2637 silc_buffer_free(tmpbuf);
2643 silc_free(server_id);
2646 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INFO,
2647 SILC_STATUS_ERR_NO_SUCH_SERVER);
2651 idp = silc_id_payload_encode(entry->id, SILC_ID_SERVER);
2653 server_info = entry->server_info;
2654 server_name = entry->server_name;
2656 /* Send the reply */
2658 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_INFO,
2659 SILC_STATUS_OK, ident, 3,
2660 2, idp->data, idp->len,
2662 strlen(server_name),
2664 strlen(server_info));
2666 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_INFO,
2667 SILC_STATUS_OK, ident, 2,
2668 2, idp->data, idp->len,
2670 strlen(server_name));
2671 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
2672 packet->data, packet->len, FALSE);
2674 silc_buffer_free(packet);
2675 silc_buffer_free(idp);
2678 silc_server_command_free(cmd);
2681 /* Server side of command PING. This just replies to the ping. */
2683 SILC_SERVER_CMD_FUNC(ping)
2685 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2686 SilcServer server = cmd->server;
2691 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_INFO, cmd, 1, 2);
2694 tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
2696 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PING,
2697 SILC_STATUS_ERR_NO_SERVER_ID);
2700 id = silc_id_str2id(tmp, len, SILC_ID_SERVER);
2704 if (SILC_ID_SERVER_COMPARE(id, server->id)) {
2705 /* Send our reply */
2706 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PING,
2709 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PING,
2710 SILC_STATUS_ERR_NO_SUCH_SERVER);
2717 silc_server_command_free(cmd);
2720 /* Internal routine to join channel. The channel sent to this function
2721 has been either created or resolved from ID lists. This joins the sent
2722 client to the channel. */
2724 static void silc_server_command_join_channel(SilcServer server,
2725 SilcServerCommandContext cmd,
2726 SilcChannelEntry channel,
2727 SilcClientID *client_id,
2731 SilcSocketConnection sock = cmd->sock;
2733 uint32 tmp_len, user_count;
2734 unsigned char *passphrase = NULL, mode[4], tmp2[4], tmp3[4];
2735 SilcClientEntry client;
2736 SilcChannelClientEntry chl;
2737 SilcBuffer reply, chidp, clidp, keyp = NULL, user_list, mode_list;
2738 uint16 ident = silc_command_get_ident(cmd->payload);
2741 SILC_LOG_DEBUG(("Start"));
2746 /* Get the client entry */
2747 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT) {
2748 client = (SilcClientEntry)sock->user_data;
2750 client = silc_idlist_find_client_by_id(server->local_list, client_id,
2757 * Check channel modes
2760 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT) {
2761 strncat(check, client->nickname, strlen(client->nickname));
2762 if (!strchr(client->nickname, '@')) {
2763 strncat(check, "@", 1);
2764 strncat(check, server->server_name, strlen(server->server_name));
2766 strncat(check, "!", 1);
2767 strncat(check, client->username, strlen(client->username));
2768 if (!strchr(client->username, '@')) {
2769 strncat(check, "@", 1);
2770 strncat(check, cmd->sock->hostname, strlen(cmd->sock->hostname));
2774 /* Check invite list if channel is invite-only channel */
2775 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT &&
2776 channel->mode & SILC_CHANNEL_MODE_INVITE) {
2777 if (!channel->invite_list) {
2778 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2779 SILC_STATUS_ERR_NOT_INVITED);
2783 if (!silc_string_match(channel->invite_list, check)) {
2784 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2785 SILC_STATUS_ERR_NOT_INVITED);
2790 /* Check ban list if it exists. If the client's nickname, server,
2791 username and/or hostname is in the ban list the access to the
2792 channel is denied. */
2793 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT && channel->ban_list) {
2794 if (silc_string_match(channel->ban_list, check)) {
2795 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2796 SILC_STATUS_ERR_BANNED_FROM_CHANNEL);
2801 /* Get passphrase */
2802 tmp = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
2804 passphrase = silc_calloc(tmp_len, sizeof(*passphrase));
2805 memcpy(passphrase, tmp, tmp_len);
2808 /* Check the channel passphrase if set. */
2809 if (channel->mode & SILC_CHANNEL_MODE_PASSPHRASE) {
2810 if (!passphrase || memcmp(channel->passphrase, passphrase,
2811 strlen(channel->passphrase))) {
2812 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2813 SILC_STATUS_ERR_BAD_PASSWORD);
2818 /* Check user count limit if set. */
2819 if (channel->mode & SILC_CHANNEL_MODE_ULIMIT) {
2820 if (silc_hash_table_count(channel->user_list) + 1 >
2821 channel->user_limit) {
2822 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2823 SILC_STATUS_ERR_CHANNEL_IS_FULL);
2829 * Client is allowed to join to the channel. Make it happen.
2832 /* Check whether the client already is on the channel */
2833 if (silc_server_client_on_channel(client, channel)) {
2834 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2835 SILC_STATUS_ERR_USER_ON_CHANNEL);
2839 /* Generate new channel key as protocol dictates */
2840 if ((!created && silc_hash_table_count(channel->user_list) > 0) ||
2841 !channel->channel_key)
2842 silc_server_create_channel_key(server, channel, 0);
2844 /* Send the channel key. This is broadcasted to the channel but is not
2845 sent to the client who is joining to the channel. */
2846 if (!(channel->mode & SILC_CHANNEL_MODE_PRIVKEY))
2847 silc_server_send_channel_key(server, NULL, channel,
2848 server->server_type == SILC_ROUTER ?
2849 FALSE : !server->standalone);
2851 /* Join the client to the channel by adding it to channel's user list.
2852 Add also the channel to client entry's channels list for fast cross-
2854 chl = silc_calloc(1, sizeof(*chl));
2856 chl->client = client;
2857 chl->channel = channel;
2858 silc_hash_table_add(channel->user_list, client, chl);
2859 silc_hash_table_add(client->channels, channel, chl);
2861 /* Get users on the channel */
2862 silc_server_get_users_on_channel(server, channel, &user_list, &mode_list,
2865 /* Encode Client ID Payload of the original client who wants to join */
2866 clidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
2868 /* Encode command reply packet */
2869 chidp = silc_id_payload_encode(channel->id, SILC_ID_CHANNEL);
2870 SILC_PUT32_MSB(channel->mode, mode);
2871 SILC_PUT32_MSB(created, tmp2);
2872 SILC_PUT32_MSB(user_count, tmp3);
2874 if (!(channel->mode & SILC_CHANNEL_MODE_PRIVKEY)) {
2875 tmp = silc_id_id2str(channel->id, SILC_ID_CHANNEL);
2876 keyp = silc_channel_key_payload_encode(SILC_ID_CHANNEL_LEN, tmp,
2877 strlen(channel->channel_key->
2879 channel->channel_key->cipher->name,
2880 channel->key_len / 8, channel->key);
2885 silc_command_reply_payload_encode_va(SILC_COMMAND_JOIN,
2886 SILC_STATUS_OK, ident, 13,
2887 2, channel->channel_name,
2888 strlen(channel->channel_name),
2889 3, chidp->data, chidp->len,
2890 4, clidp->data, clidp->len,
2893 7, keyp ? keyp->data : NULL,
2894 keyp ? keyp->len : 0,
2895 8, channel->ban_list,
2897 strlen(channel->ban_list) : 0,
2898 9, channel->invite_list,
2899 channel->invite_list ?
2900 strlen(channel->invite_list) : 0,
2903 strlen(channel->topic) : 0,
2904 11, channel->hmac->hmac->name,
2905 strlen(channel->hmac->hmac->name),
2907 13, user_list->data, user_list->len,
2908 14, mode_list->data,
2911 /* Send command reply */
2912 silc_server_packet_send(server, sock, SILC_PACKET_COMMAND_REPLY, 0,
2913 reply->data, reply->len, FALSE);
2915 if (!cmd->pending) {
2916 /* Send JOIN notify to locally connected clients on the channel */
2917 silc_server_send_notify_to_channel(server, NULL, channel, FALSE,
2918 SILC_NOTIFY_TYPE_JOIN, 2,
2919 clidp->data, clidp->len,
2920 chidp->data, chidp->len);
2922 /* Send JOIN notify packet to our primary router */
2923 if (!server->standalone)
2924 silc_server_send_notify_join(server, server->router->connection,
2925 server->server_type == SILC_ROUTER ?
2926 TRUE : FALSE, channel, client->id);
2929 silc_buffer_free(reply);
2930 silc_buffer_free(clidp);
2931 silc_buffer_free(chidp);
2932 silc_buffer_free(keyp);
2933 silc_buffer_free(user_list);
2934 silc_buffer_free(mode_list);
2938 silc_free(passphrase);
2941 /* Server side of command JOIN. Joins client into requested channel. If
2942 the channel does not exist it will be created. */
2944 SILC_SERVER_CMD_FUNC(join)
2946 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2947 SilcServer server = cmd->server;
2949 char *tmp, *channel_name = NULL, *cipher, *hmac;
2950 SilcChannelEntry channel;
2952 int created = FALSE;
2953 SilcClientID *client_id;
2955 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_JOIN, cmd, 1, 4);
2957 /* Get channel name */
2958 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
2960 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2961 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
2966 if (strlen(channel_name) > 256)
2967 channel_name[255] = '\0';
2969 if (silc_server_command_bad_chars(channel_name) == TRUE) {
2970 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2971 SILC_STATUS_ERR_BAD_CHANNEL);
2972 silc_free(channel_name);
2976 /* Get Client ID of the client who is joining to the channel */
2977 tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
2979 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2980 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
2983 client_id = silc_id_payload_parse_id(tmp, tmp_len);
2985 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2986 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
2990 /* Get cipher and hmac name */
2991 cipher = silc_argument_get_arg_type(cmd->args, 4, NULL);
2992 hmac = silc_argument_get_arg_type(cmd->args, 5, NULL);
2994 /* See if the channel exists */
2995 channel = silc_idlist_find_channel_by_name(server->local_list,
2996 channel_name, NULL);
2998 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT) {
2999 /* If this is coming from client the Client ID in the command packet must
3000 be same as the client's ID. */
3001 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT) {
3002 SilcClientEntry entry = (SilcClientEntry)cmd->sock->user_data;
3003 if (!SILC_ID_CLIENT_COMPARE(entry->id, client_id)) {
3004 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
3005 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3010 if (!channel || !channel->id) {
3011 /* Channel not found */
3013 /* If we are standalone server we don't have a router, we just create
3014 the channel by ourselves. */
3015 if (server->standalone) {
3016 channel = silc_server_create_new_channel(server, server->id, cipher,
3017 hmac, channel_name, TRUE);
3019 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
3020 SILC_STATUS_ERR_UNKNOWN_ALGORITHM);
3024 umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
3029 /* The channel does not exist on our server. If we are normal server
3030 we will send JOIN command to our router which will handle the
3031 joining procedure (either creates the channel if it doesn't exist
3032 or joins the client to it). */
3033 if (server->server_type == SILC_SERVER) {
3037 old_ident = silc_command_get_ident(cmd->payload);
3038 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
3039 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
3041 /* Send JOIN command to our router */
3042 silc_server_packet_send(server, (SilcSocketConnection)
3043 server->router->connection,
3044 SILC_PACKET_COMMAND, cmd->packet->flags,
3045 tmpbuf->data, tmpbuf->len, TRUE);
3047 /* Reprocess this packet after received reply from router */
3048 silc_server_command_pending(server, SILC_COMMAND_JOIN,
3049 silc_command_get_ident(cmd->payload),
3050 silc_server_command_destructor,
3051 silc_server_command_join,
3052 silc_server_command_dup(cmd));
3053 cmd->pending = TRUE;
3057 /* We are router and the channel does not seem exist so we will check
3058 our global list as well for the channel. */
3059 channel = silc_idlist_find_channel_by_name(server->global_list,
3060 channel_name, NULL);
3062 /* Channel really does not exist, create it */
3063 channel = silc_server_create_new_channel(server, server->id, cipher,
3064 hmac, channel_name, TRUE);
3066 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
3067 SILC_STATUS_ERR_UNKNOWN_ALGORITHM);
3071 umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
3078 /* Channel not found */
3080 /* If the command came from router and/or we are normal server then
3081 something went wrong with the joining as the channel was not found.
3082 We can't do anything else but ignore this. */
3083 if (cmd->sock->type == SILC_SOCKET_TYPE_ROUTER ||
3084 server->server_type == SILC_SERVER)
3087 /* We are router and the channel does not seem exist so we will check
3088 our global list as well for the channel. */
3089 channel = silc_idlist_find_channel_by_name(server->global_list,
3090 channel_name, NULL);
3092 /* Channel really does not exist, create it */
3093 channel = silc_server_create_new_channel(server, server->id, cipher,
3094 hmac, channel_name, TRUE);
3096 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
3097 SILC_STATUS_ERR_UNKNOWN_ALGORITHM);
3101 umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
3107 /* If the channel does not have global users and is also empty it means the
3108 channel was created globally (by our router) and the client will be the
3109 channel founder and operator. */
3110 if (!channel->global_users && !silc_hash_table_count(channel->user_list)) {
3111 umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
3112 created = TRUE; /* Created globally by our router */
3115 /* Join to the channel */
3116 silc_server_command_join_channel(server, cmd, channel, client_id,
3119 silc_free(client_id);
3122 silc_server_command_free(cmd);
3125 /* Server side of command MOTD. Sends server's current "message of the
3126 day" to the client. */
3128 SILC_SERVER_CMD_FUNC(motd)
3130 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
3131 SilcServer server = cmd->server;
3132 SilcBuffer packet, idp;
3133 char *motd, *dest_server;
3135 uint16 ident = silc_command_get_ident(cmd->payload);
3137 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_MOTD, cmd, 1, 1);
3139 /* Get server name */
3140 dest_server = silc_argument_get_arg_type(cmd->args, 1, NULL);
3142 silc_server_command_send_status_reply(cmd, SILC_COMMAND_MOTD,
3143 SILC_STATUS_ERR_NO_SUCH_SERVER);
3147 if (!strncasecmp(dest_server, server->server_name, strlen(dest_server))) {
3150 idp = silc_id_payload_encode(server->id_entry->id, SILC_ID_SERVER);
3152 if (server->config && server->config->motd &&
3153 server->config->motd->motd_file) {
3155 motd = silc_file_read(server->config->motd->motd_file, &motd_len);
3160 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_MOTD,
3161 SILC_STATUS_OK, ident, 2,
3167 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_MOTD,
3168 SILC_STATUS_OK, ident, 1,
3172 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
3173 packet->data, packet->len, FALSE);
3174 silc_buffer_free(packet);
3175 silc_buffer_free(idp);
3177 SilcServerEntry entry;
3179 /* Check whether we have this server cached */
3180 entry = silc_idlist_find_server_by_name(server->global_list,
3183 entry = silc_idlist_find_server_by_name(server->local_list,
3187 if (server->server_type == SILC_ROUTER && !cmd->pending &&
3188 entry && !entry->motd) {
3189 /* Send to the server */
3193 old_ident = silc_command_get_ident(cmd->payload);
3194 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
3195 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
3197 silc_server_packet_send(server, entry->connection,
3198 SILC_PACKET_COMMAND, cmd->packet->flags,
3199 tmpbuf->data, tmpbuf->len, TRUE);
3201 /* Reprocess this packet after received reply from router */
3202 silc_server_command_pending(server, SILC_COMMAND_MOTD,
3203 silc_command_get_ident(cmd->payload),
3204 silc_server_command_destructor,
3205 silc_server_command_motd,
3206 silc_server_command_dup(cmd));
3207 cmd->pending = TRUE;
3208 silc_command_set_ident(cmd->payload, old_ident);
3209 silc_buffer_free(tmpbuf);
3213 if (!entry && !cmd->pending && !server->standalone) {
3214 /* Send to the primary router */
3218 old_ident = silc_command_get_ident(cmd->payload);
3219 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
3220 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
3222 silc_server_packet_send(server, server->router->connection,
3223 SILC_PACKET_COMMAND, cmd->packet->flags,
3224 tmpbuf->data, tmpbuf->len, TRUE);
3226 /* Reprocess this packet after received reply from router */
3227 silc_server_command_pending(server, SILC_COMMAND_MOTD,
3228 silc_command_get_ident(cmd->payload),
3229 silc_server_command_destructor,
3230 silc_server_command_motd,
3231 silc_server_command_dup(cmd));
3232 cmd->pending = TRUE;
3233 silc_command_set_ident(cmd->payload, old_ident);
3234 silc_buffer_free(tmpbuf);
3239 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INFO,
3240 SILC_STATUS_ERR_NO_SUCH_SERVER);
3244 idp = silc_id_payload_encode(server->id_entry->id, SILC_ID_SERVER);
3247 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_MOTD,
3248 SILC_STATUS_OK, ident, 2,
3251 strlen(entry->motd));
3253 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_MOTD,
3254 SILC_STATUS_OK, ident, 1,
3257 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
3258 packet->data, packet->len, FALSE);
3259 silc_buffer_free(packet);
3260 silc_buffer_free(idp);
3264 silc_server_command_free(cmd);
3267 /* Server side of command UMODE. Client can use this command to set/unset
3268 user mode. Client actually cannot set itself to be as server/router
3269 operator so this can be used only to unset the modes. */
3271 SILC_SERVER_CMD_FUNC(umode)
3273 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
3274 SilcServer server = cmd->server;
3275 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
3277 unsigned char *tmp_mask;
3279 uint16 ident = silc_command_get_ident(cmd->payload);
3281 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
3284 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_UMODE, cmd, 2, 2);
3286 /* Get the client's mode mask */
3287 tmp_mask = silc_argument_get_arg_type(cmd->args, 2, NULL);
3289 silc_server_command_send_status_reply(cmd, SILC_COMMAND_UMODE,
3290 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3293 SILC_GET32_MSB(mask, tmp_mask);
3299 if (mask & SILC_UMODE_SERVER_OPERATOR) {
3300 if (!(client->mode & SILC_UMODE_SERVER_OPERATOR)) {
3301 /* Cannot operator mode */
3302 silc_server_command_send_status_reply(cmd, SILC_COMMAND_UMODE,
3303 SILC_STATUS_ERR_PERM_DENIED);
3307 if (client->mode & SILC_UMODE_SERVER_OPERATOR)
3308 /* Remove the server operator rights */
3309 client->mode &= ~SILC_UMODE_SERVER_OPERATOR;
3312 if (mask & SILC_UMODE_ROUTER_OPERATOR) {
3313 if (!(client->mode & SILC_UMODE_ROUTER_OPERATOR)) {
3314 /* Cannot operator mode */
3315 silc_server_command_send_status_reply(cmd, SILC_COMMAND_UMODE,
3316 SILC_STATUS_ERR_PERM_DENIED);
3320 if (client->mode & SILC_UMODE_ROUTER_OPERATOR)
3321 /* Remove the router operator rights */
3322 client->mode &= ~SILC_UMODE_ROUTER_OPERATOR;
3325 if (mask & SILC_UMODE_GONE) {
3326 client->mode |= SILC_UMODE_GONE;
3328 if (client->mode & SILC_UMODE_GONE)
3329 /* Remove the gone status */
3330 client->mode &= ~SILC_UMODE_GONE;
3333 /* Send UMODE change to primary router */
3334 if (!server->standalone)
3335 silc_server_send_notify_umode(server, server->router->connection, TRUE,
3336 client->id, client->mode);
3338 /* Send command reply to sender */
3339 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_UMODE,
3340 SILC_STATUS_OK, ident, 1,
3342 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
3343 packet->data, packet->len, FALSE);
3344 silc_buffer_free(packet);
3347 silc_server_command_free(cmd);
3350 /* Checks that client has rights to add or remove channel modes. If any
3351 of the checks fails FALSE is returned. */
3353 int silc_server_check_cmode_rights(SilcChannelEntry channel,
3354 SilcChannelClientEntry client,
3357 int is_op = client->mode & SILC_CHANNEL_UMODE_CHANOP;
3358 int is_fo = client->mode & SILC_CHANNEL_UMODE_CHANFO;
3360 /* Check whether has rights to change anything */
3361 if (!is_op && !is_fo)
3364 /* Check whether has rights to change everything */
3368 /* We know that client is channel operator, check that they are not
3369 changing anything that requires channel founder rights. Rest of the
3370 modes are available automatically for channel operator. */
3372 if (mode & SILC_CHANNEL_MODE_PRIVKEY) {
3373 if (is_op && !is_fo)
3376 if (channel->mode & SILC_CHANNEL_MODE_PRIVKEY) {
3377 if (is_op && !is_fo)
3382 if (mode & SILC_CHANNEL_MODE_PASSPHRASE) {
3383 if (is_op && !is_fo)
3386 if (channel->mode & SILC_CHANNEL_MODE_PASSPHRASE) {
3387 if (is_op && !is_fo)
3392 if (mode & SILC_CHANNEL_MODE_CIPHER) {
3393 if (is_op && !is_fo)
3396 if (channel->mode & SILC_CHANNEL_MODE_CIPHER) {
3397 if (is_op && !is_fo)
3402 if (mode & SILC_CHANNEL_MODE_FOUNDER_AUTH) {
3403 if (is_op && !is_fo)
3406 if (channel->mode & SILC_CHANNEL_MODE_FOUNDER_AUTH) {
3407 if (is_op && !is_fo)
3415 /* Server side command of CMODE. Changes channel mode */
3417 SILC_SERVER_CMD_FUNC(cmode)
3419 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
3420 SilcServer server = cmd->server;
3421 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
3422 SilcIDListData idata = (SilcIDListData)client;
3423 SilcChannelID *channel_id;
3424 SilcChannelEntry channel;
3425 SilcChannelClientEntry chl;
3426 SilcBuffer packet, cidp;
3427 unsigned char *tmp, *tmp_id, *tmp_mask;
3428 char *cipher = NULL, *hmac = NULL;
3429 uint32 mode_mask, tmp_len, tmp_len2;
3430 uint16 ident = silc_command_get_ident(cmd->payload);
3432 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_CMODE, cmd, 2, 7);
3434 /* Get Channel ID */
3435 tmp_id = silc_argument_get_arg_type(cmd->args, 1, &tmp_len2);
3437 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3438 SILC_STATUS_ERR_NO_CHANNEL_ID);
3441 channel_id = silc_id_payload_parse_id(tmp_id, tmp_len2);
3443 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3444 SILC_STATUS_ERR_NO_CHANNEL_ID);
3448 /* Get the channel mode mask */
3449 tmp_mask = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
3451 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3452 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3455 SILC_GET32_MSB(mode_mask, tmp_mask);
3457 /* Get channel entry */
3458 channel = silc_idlist_find_channel_by_id(server->local_list,
3461 channel = silc_idlist_find_channel_by_id(server->global_list,
3464 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3465 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
3470 /* Check whether this client is on the channel */
3471 if (!silc_server_client_on_channel(client, channel)) {
3472 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3473 SILC_STATUS_ERR_NOT_ON_CHANNEL);
3477 /* Get entry to the channel user list */
3478 silc_hash_table_find(channel->user_list, client, NULL, (void *)&chl);
3480 /* Check that client has rights to change any requested channel modes */
3481 if (!silc_server_check_cmode_rights(channel, chl, mode_mask)) {
3482 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3483 SILC_STATUS_ERR_NO_CHANNEL_PRIV);
3488 * Check the modes. Modes that requires nothing special operation are
3492 if (mode_mask & SILC_CHANNEL_MODE_PRIVKEY) {
3493 /* Channel uses private keys to protect traffic. Client(s) has set the
3494 key locally they want to use, server does not know that key. */
3495 /* Nothing interesting to do here */
3497 if (channel->mode & SILC_CHANNEL_MODE_PRIVKEY) {
3498 /* The mode is removed and we need to generate and distribute
3499 new channel key. Clients are not using private channel keys
3500 anymore after this. */
3502 /* Re-generate channel key */
3503 silc_server_create_channel_key(server, channel, 0);
3505 /* Send the channel key. This sends it to our local clients and if
3506 we are normal server to our router as well. */
3507 silc_server_send_channel_key(server, NULL, channel,
3508 server->server_type == SILC_ROUTER ?
3509 FALSE : !server->standalone);
3511 cipher = channel->channel_key->cipher->name;
3512 hmac = channel->hmac->hmac->name;
3516 if (mode_mask & SILC_CHANNEL_MODE_ULIMIT) {
3517 /* User limit is set on channel */
3520 /* Get user limit */
3521 tmp = silc_argument_get_arg_type(cmd->args, 3, NULL);
3523 if (!(channel->mode & SILC_CHANNEL_MODE_ULIMIT)) {
3524 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3525 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3529 SILC_GET32_MSB(user_limit, tmp);
3530 channel->user_limit = user_limit;
3533 if (channel->mode & SILC_CHANNEL_MODE_ULIMIT)
3534 /* User limit mode is unset. Remove user limit */
3535 channel->user_limit = 0;
3538 if (mode_mask & SILC_CHANNEL_MODE_PASSPHRASE) {
3539 if (!(channel->mode & SILC_CHANNEL_MODE_PASSPHRASE)) {
3540 /* Passphrase has been set to channel */
3542 /* Get the passphrase */
3543 tmp = silc_argument_get_arg_type(cmd->args, 4, NULL);
3545 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3546 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3550 /* Save the passphrase */
3551 channel->passphrase = strdup(tmp);
3554 if (channel->mode & SILC_CHANNEL_MODE_PASSPHRASE) {
3555 /* Passphrase mode is unset. remove the passphrase */
3556 if (channel->passphrase) {
3557 silc_free(channel->passphrase);
3558 channel->passphrase = NULL;
3563 if (mode_mask & SILC_CHANNEL_MODE_CIPHER) {
3564 if (!(channel->mode & SILC_CHANNEL_MODE_CIPHER)) {
3565 /* Cipher to use protect the traffic */
3568 cipher = silc_argument_get_arg_type(cmd->args, 5, NULL);
3570 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3571 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3575 /* Delete old cipher and allocate the new one */
3576 silc_cipher_free(channel->channel_key);
3577 if (!silc_cipher_alloc(cipher, &channel->channel_key)) {
3578 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3579 SILC_STATUS_ERR_UNKNOWN_ALGORITHM);
3583 /* Re-generate channel key */
3584 silc_server_create_channel_key(server, channel, 0);
3586 /* Send the channel key. This sends it to our local clients and if
3587 we are normal server to our router as well. */
3588 silc_server_send_channel_key(server, NULL, channel,
3589 server->server_type == SILC_ROUTER ?
3590 FALSE : !server->standalone);
3593 if (channel->mode & SILC_CHANNEL_MODE_CIPHER) {
3594 /* Cipher mode is unset. Remove the cipher and revert back to
3596 cipher = channel->cipher;
3598 /* Delete old cipher and allocate default one */
3599 silc_cipher_free(channel->channel_key);
3600 if (!silc_cipher_alloc(cipher ? cipher : "aes-256-cbc",
3601 &channel->channel_key)) {
3602 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3603 SILC_STATUS_ERR_UNKNOWN_ALGORITHM);
3607 /* Re-generate channel key */
3608 silc_server_create_channel_key(server, channel, 0);
3610 /* Send the channel key. This sends it to our local clients and if
3611 we are normal server to our router as well. */
3612 silc_server_send_channel_key(server, NULL, channel,
3613 server->server_type == SILC_ROUTER ?
3614 FALSE : !server->standalone);
3618 if (mode_mask & SILC_CHANNEL_MODE_HMAC) {
3619 if (!(channel->mode & SILC_CHANNEL_MODE_HMAC)) {
3620 /* HMAC to use protect the traffic */
3621 unsigned char hash[32];
3624 hmac = silc_argument_get_arg_type(cmd->args, 6, NULL);
3626 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3627 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3631 /* Delete old hmac and allocate the new one */
3632 silc_hmac_free(channel->hmac);
3633 if (!silc_hmac_alloc(hmac, NULL, &channel->hmac)) {
3634 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3635 SILC_STATUS_ERR_UNKNOWN_ALGORITHM);
3639 /* Set the HMAC key out of current channel key. The client must do
3641 silc_hash_make(channel->hmac->hash, channel->key, channel->key_len / 8,
3643 silc_hmac_set_key(channel->hmac, hash,
3644 silc_hash_len(channel->hmac->hash));
3645 memset(hash, 0, sizeof(hash));
3648 if (channel->mode & SILC_CHANNEL_MODE_HMAC) {
3649 /* Hmac mode is unset. Remove the hmac and revert back to
3651 unsigned char hash[32];
3652 hmac = channel->hmac_name;
3654 /* Delete old hmac and allocate default one */
3655 silc_hmac_free(channel->hmac);
3656 if (!silc_hmac_alloc(hmac ? hmac : "hmac-sha1-96", NULL,
3658 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3659 SILC_STATUS_ERR_UNKNOWN_ALGORITHM);
3663 /* Set the HMAC key out of current channel key. The client must do
3665 silc_hash_make(channel->hmac->hash, channel->key, channel->key_len / 8,
3667 silc_hmac_set_key(channel->hmac, hash,
3668 silc_hash_len(channel->hmac->hash));
3669 memset(hash, 0, sizeof(hash));
3673 if (mode_mask & SILC_CHANNEL_MODE_FOUNDER_AUTH) {
3674 if (chl->mode & SILC_CHANNEL_UMODE_CHANFO) {
3675 if (!(channel->mode & SILC_CHANNEL_MODE_FOUNDER_AUTH)) {
3676 /* Set the founder authentication */
3677 SilcAuthPayload auth;
3679 tmp = silc_argument_get_arg_type(cmd->args, 7, &tmp_len);
3681 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3682 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3686 auth = silc_auth_payload_parse(tmp, tmp_len);
3688 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3689 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3693 /* Save the public key */
3694 tmp = silc_pkcs_public_key_encode(idata->public_key, &tmp_len);
3695 silc_pkcs_public_key_decode(tmp, tmp_len, &channel->founder_key);
3698 channel->founder_method = silc_auth_get_method(auth);
3700 if (channel->founder_method == SILC_AUTH_PASSWORD) {
3701 tmp = silc_auth_get_data(auth, &tmp_len);
3702 channel->founder_passwd =
3703 silc_calloc(tmp_len + 1, sizeof(*channel->founder_passwd));
3704 memcpy(channel->founder_passwd, tmp, tmp_len);
3705 channel->founder_passwd_len = tmp_len;
3708 silc_auth_payload_free(auth);
3712 if (chl->mode & SILC_CHANNEL_UMODE_CHANFO) {
3713 if (channel->mode & SILC_CHANNEL_MODE_FOUNDER_AUTH) {
3714 if (channel->founder_key)
3715 silc_pkcs_public_key_free(channel->founder_key);
3716 if (channel->founder_passwd) {
3717 silc_free(channel->founder_passwd);
3718 channel->founder_passwd = NULL;
3724 /* Finally, set the mode */
3725 channel->mode = mode_mask;
3727 /* Send CMODE_CHANGE notify */
3728 cidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
3729 silc_server_send_notify_to_channel(server, NULL, channel, FALSE,
3730 SILC_NOTIFY_TYPE_CMODE_CHANGE, 4,
3731 cidp->data, cidp->len,
3733 cipher, cipher ? strlen(cipher) : 0,
3734 hmac, hmac ? strlen(hmac) : 0);
3736 /* Set CMODE notify type to network */
3737 if (!server->standalone)
3738 silc_server_send_notify_cmode(server, server->router->connection,
3739 server->server_type == SILC_ROUTER ?
3740 TRUE : FALSE, channel,
3741 mode_mask, client->id, SILC_ID_CLIENT,
3744 /* Send command reply to sender */
3745 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_CMODE,
3746 SILC_STATUS_OK, ident, 1,
3748 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
3749 packet->data, packet->len, FALSE);
3751 silc_buffer_free(packet);
3752 silc_free(channel_id);
3756 silc_server_command_free(cmd);
3759 /* Server side of CUMODE command. Changes client's mode on a channel. */
3761 SILC_SERVER_CMD_FUNC(cumode)
3763 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
3764 SilcServer server = cmd->server;
3765 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
3766 SilcIDListData idata = (SilcIDListData)client;
3767 SilcChannelID *channel_id;
3768 SilcClientID *client_id;
3769 SilcChannelEntry channel;
3770 SilcClientEntry target_client;
3771 SilcChannelClientEntry chl;
3772 SilcBuffer packet, idp;
3773 unsigned char *tmp_id, *tmp_ch_id, *tmp_mask;
3774 uint32 target_mask, sender_mask = 0, tmp_len, tmp_ch_len;
3776 uint16 ident = silc_command_get_ident(cmd->payload);
3778 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_CUMODE, cmd, 3, 4);
3780 /* Get Channel ID */
3781 tmp_ch_id = silc_argument_get_arg_type(cmd->args, 1, &tmp_ch_len);
3783 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3784 SILC_STATUS_ERR_NO_CHANNEL_ID);
3787 channel_id = silc_id_payload_parse_id(tmp_ch_id, tmp_ch_len);
3789 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3790 SILC_STATUS_ERR_NO_CHANNEL_ID);
3794 /* Get channel entry */
3795 channel = silc_idlist_find_channel_by_id(server->local_list,
3798 channel = silc_idlist_find_channel_by_id(server->global_list,
3801 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3802 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
3807 /* Check whether sender is on the channel */
3808 if (!silc_server_client_on_channel(client, channel)) {
3809 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3810 SILC_STATUS_ERR_NOT_ON_CHANNEL);
3814 /* Check that client has rights to change other's rights */
3815 silc_hash_table_find(channel->user_list, client, NULL, (void *)&chl);
3816 sender_mask = chl->mode;
3818 /* Get the target client's channel mode mask */
3819 tmp_mask = silc_argument_get_arg_type(cmd->args, 2, NULL);
3821 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3822 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3825 SILC_GET32_MSB(target_mask, tmp_mask);
3827 /* Get target Client ID */
3828 tmp_id = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
3830 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3831 SILC_STATUS_ERR_NO_CLIENT_ID);
3834 client_id = silc_id_payload_parse_id(tmp_id, tmp_len);
3836 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3837 SILC_STATUS_ERR_NO_CLIENT_ID);
3841 /* Get target client's entry */
3842 target_client = silc_idlist_find_client_by_id(server->local_list,
3844 if (!target_client) {
3845 target_client = silc_idlist_find_client_by_id(server->global_list,
3849 if (target_client != client &&
3850 !(sender_mask & SILC_CHANNEL_UMODE_CHANFO) &&
3851 !(sender_mask & SILC_CHANNEL_UMODE_CHANOP)) {
3852 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3853 SILC_STATUS_ERR_NO_CHANNEL_PRIV);
3857 /* Check whether target client is on the channel */
3858 if (target_client != client) {
3859 if (!silc_server_client_on_channel(target_client, channel)) {
3860 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3861 SILC_STATUS_ERR_USER_NOT_ON_CHANNEL);
3865 /* Get entry to the channel user list */
3866 silc_hash_table_find(channel->user_list, target_client, NULL,
3874 /* If the target client is founder, no one else can change their mode
3876 if (chl->mode & SILC_CHANNEL_UMODE_CHANFO && chl->client != target_client) {
3877 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3878 SILC_STATUS_ERR_NOT_YOU);
3882 if (target_mask & SILC_CHANNEL_UMODE_CHANFO) {
3883 /* The client tries to claim the founder rights. */
3884 unsigned char *tmp_auth;
3885 uint32 tmp_auth_len, auth_len;
3888 if (target_client != client) {
3889 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3890 SILC_STATUS_ERR_NOT_YOU);
3894 if (!(channel->mode & SILC_CHANNEL_MODE_FOUNDER_AUTH) ||
3895 !channel->founder_key) {
3896 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3897 SILC_STATUS_ERR_NOT_YOU);
3901 tmp_auth = silc_argument_get_arg_type(cmd->args, 4, &tmp_auth_len);
3903 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3904 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3908 auth = (channel->founder_method == SILC_AUTH_PASSWORD ?
3909 (void *)channel->founder_passwd : (void *)channel->founder_key);
3910 auth_len = (channel->founder_method == SILC_AUTH_PASSWORD ?
3911 channel->founder_passwd_len : 0);
3913 if (!silc_auth_verify_data(tmp_auth, tmp_auth_len,
3914 channel->founder_method, auth, auth_len,
3915 idata->hash, client->id, SILC_ID_CLIENT)) {
3916 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3917 SILC_STATUS_ERR_AUTH_FAILED);
3921 sender_mask = chl->mode |= SILC_CHANNEL_UMODE_CHANFO;
3924 if (chl->mode & SILC_CHANNEL_UMODE_CHANFO) {
3925 if (target_client == client) {
3926 /* Remove channel founder rights from itself */
3927 chl->mode &= ~SILC_CHANNEL_UMODE_CHANFO;
3930 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3931 SILC_STATUS_ERR_NOT_YOU);
3937 if (target_mask & SILC_CHANNEL_UMODE_CHANOP) {
3938 /* Promote to operator */
3939 if (!(chl->mode & SILC_CHANNEL_UMODE_CHANOP)) {
3940 if (!(sender_mask & SILC_CHANNEL_UMODE_CHANOP) &&
3941 !(sender_mask & SILC_CHANNEL_UMODE_CHANFO)) {
3942 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3943 SILC_STATUS_ERR_NO_CHANNEL_PRIV);
3947 chl->mode |= SILC_CHANNEL_UMODE_CHANOP;
3951 if (chl->mode & SILC_CHANNEL_UMODE_CHANOP) {
3952 if (!(sender_mask & SILC_CHANNEL_UMODE_CHANOP) &&
3953 !(sender_mask & SILC_CHANNEL_UMODE_CHANFO)) {
3954 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3955 SILC_STATUS_ERR_NO_CHANNEL_PRIV);
3959 /* Demote to normal user */
3960 chl->mode &= ~SILC_CHANNEL_UMODE_CHANOP;
3965 idp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
3966 tmp_id = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
3968 /* Send notify to channel, notify only if mode was actually changed. */
3970 silc_server_send_notify_to_channel(server, NULL, channel, FALSE,
3971 SILC_NOTIFY_TYPE_CUMODE_CHANGE, 3,
3972 idp->data, idp->len,
3976 /* Set CUMODE notify type to network */
3977 if (!server->standalone)
3978 silc_server_send_notify_cumode(server, server->router->connection,
3979 server->server_type == SILC_ROUTER ?
3980 TRUE : FALSE, channel,
3981 target_mask, client->id,
3986 /* Send command reply to sender */
3987 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_CUMODE,
3988 SILC_STATUS_OK, ident, 2,
3990 3, tmp_id, tmp_len);
3991 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
3992 packet->data, packet->len, FALSE);
3994 silc_buffer_free(packet);
3995 silc_free(channel_id);
3996 silc_free(client_id);
3997 silc_buffer_free(idp);
4000 silc_server_command_free(cmd);
4003 /* Server side of KICK command. Kicks client out of channel. */
4005 SILC_SERVER_CMD_FUNC(kick)
4007 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4008 SilcServer server = cmd->server;
4009 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
4010 SilcClientEntry target_client;
4011 SilcChannelID *channel_id;
4012 SilcClientID *client_id;
4013 SilcChannelEntry channel;
4014 SilcChannelClientEntry chl;
4017 unsigned char *tmp, *comment;
4019 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_LEAVE, cmd, 1, 3);
4021 /* Get Channel ID */
4022 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
4024 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4025 SILC_STATUS_ERR_NO_CHANNEL_ID);
4028 channel_id = silc_id_payload_parse_id(tmp, tmp_len);
4030 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4031 SILC_STATUS_ERR_NO_CHANNEL_ID);
4035 /* Get channel entry */
4036 channel = silc_idlist_find_channel_by_id(server->local_list,
4039 channel = silc_idlist_find_channel_by_id(server->local_list,
4042 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4043 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
4048 /* Check whether sender is on the channel */
4049 if (!silc_server_client_on_channel(client, channel)) {
4050 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4051 SILC_STATUS_ERR_NOT_ON_CHANNEL);
4055 /* Check that the kicker is channel operator or channel founder */
4056 silc_hash_table_find(channel->user_list, client, NULL, (void *)&chl);
4057 if (chl->mode == SILC_CHANNEL_UMODE_NONE) {
4058 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4059 SILC_STATUS_ERR_NO_CHANNEL_PRIV);
4063 /* Get target Client ID */
4064 tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
4066 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4067 SILC_STATUS_ERR_NO_CLIENT_ID);
4070 client_id = silc_id_payload_parse_id(tmp, tmp_len);
4072 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4073 SILC_STATUS_ERR_NO_CLIENT_ID);
4077 /* Get target client's entry */
4078 target_client = silc_idlist_find_client_by_id(server->local_list,
4080 if (!target_client) {
4081 target_client = silc_idlist_find_client_by_id(server->global_list,
4085 /* Check that the target client is not channel founder. Channel founder
4086 cannot be kicked from the channel. */
4087 silc_hash_table_find(channel->user_list, target_client, NULL, (void *)&chl);
4088 if (chl->mode & SILC_CHANNEL_UMODE_CHANFO) {
4089 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4090 SILC_STATUS_ERR_NO_CHANNEL_FOPRIV);
4094 /* Check whether target client is on the channel */
4095 if (!silc_server_client_on_channel(target_client, channel)) {
4096 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4097 SILC_STATUS_ERR_USER_NOT_ON_CHANNEL);
4103 comment = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
4107 /* Send command reply to sender */
4108 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4111 /* Send KICKED notify to local clients on the channel */
4112 idp = silc_id_payload_encode(target_client->id, SILC_ID_CLIENT);
4113 silc_server_send_notify_to_channel(server, NULL, channel, FALSE,
4114 SILC_NOTIFY_TYPE_KICKED,
4116 idp->data, idp->len,
4117 comment, comment ? strlen(comment) : 0);
4118 silc_buffer_free(idp);
4120 /* Remove the client from the channel. If the channel does not exist
4121 after removing the client then the client kicked itself off the channel
4122 and we don't have to send anything after that. */
4123 if (!silc_server_remove_from_one_channel(server, NULL, channel,
4124 target_client, FALSE))
4127 /* Send KICKED notify to primary route */
4128 if (!server->standalone)
4129 silc_server_send_notify_kicked(server, server->router->connection,
4130 server->server_type == SILC_ROUTER ?
4131 TRUE : FALSE, channel,
4132 target_client->id, comment);
4134 if (!(channel->mode & SILC_CHANNEL_MODE_PRIVKEY)) {
4135 /* Re-generate channel key */
4136 silc_server_create_channel_key(server, channel, 0);
4138 /* Send the channel key to the channel. The key of course is not sent
4139 to the client who was kicked off the channel. */
4140 silc_server_send_channel_key(server, target_client->connection, channel,
4141 server->server_type == SILC_ROUTER ?
4142 FALSE : !server->standalone);
4146 silc_server_command_free(cmd);
4149 /* Server side of OPER command. Client uses this comand to obtain server
4150 operator privileges to this server/router. */
4152 SILC_SERVER_CMD_FUNC(oper)
4154 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4155 SilcServer server = cmd->server;
4156 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
4157 unsigned char *username, *auth;
4159 SilcServerConfigSectionAdminConnection *admin;
4160 SilcIDListData idata = (SilcIDListData)client;
4162 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_OPER, cmd, 1, 2);
4164 if (!client || cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
4167 /* Get the username */
4168 username = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
4170 silc_server_command_send_status_reply(cmd, SILC_COMMAND_OPER,
4171 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
4175 /* Get the admin configuration */
4176 admin = silc_server_config_find_admin(server->config, cmd->sock->ip,
4177 username, client->nickname);
4179 admin = silc_server_config_find_admin(server->config, cmd->sock->hostname,
4180 username, client->nickname);
4182 silc_server_command_send_status_reply(cmd, SILC_COMMAND_OPER,
4183 SILC_STATUS_ERR_AUTH_FAILED);
4188 /* Get the authentication payload */
4189 auth = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
4191 silc_server_command_send_status_reply(cmd, SILC_COMMAND_OPER,
4192 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
4196 /* Verify the authentication data */
4197 if (!silc_auth_verify_data(auth, tmp_len, admin->auth_meth,
4198 admin->auth_data, admin->auth_data_len,
4199 idata->hash, client->id, SILC_ID_CLIENT)) {
4200 silc_server_command_send_status_reply(cmd, SILC_COMMAND_OPER,
4201 SILC_STATUS_ERR_AUTH_FAILED);
4205 /* Client is now server operator */
4206 client->mode |= SILC_UMODE_SERVER_OPERATOR;
4208 /* Send UMODE change to primary router */
4209 if (!server->standalone)
4210 silc_server_send_notify_umode(server, server->router->connection, TRUE,
4211 client->id, client->mode);
4213 /* Send reply to the sender */
4214 silc_server_command_send_status_reply(cmd, SILC_COMMAND_OPER,
4218 silc_server_command_free(cmd);
4221 /* Server side of SILCOPER command. Client uses this comand to obtain router
4222 operator privileges to this router. */
4224 SILC_SERVER_CMD_FUNC(silcoper)
4226 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4227 SilcServer server = cmd->server;
4228 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
4229 unsigned char *username, *auth;
4231 SilcServerConfigSectionAdminConnection *admin;
4232 SilcIDListData idata = (SilcIDListData)client;
4234 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_SILCOPER, cmd, 1, 2);
4236 if (server->server_type == SILC_SERVER)
4239 if (!client || cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
4242 /* Get the username */
4243 username = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
4245 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
4246 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
4250 /* Get the admin configuration */
4251 admin = silc_server_config_find_admin(server->config, cmd->sock->ip,
4252 username, client->nickname);
4254 admin = silc_server_config_find_admin(server->config, cmd->sock->hostname,
4255 username, client->nickname);
4257 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
4258 SILC_STATUS_ERR_AUTH_FAILED);
4263 /* Get the authentication payload */
4264 auth = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
4266 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
4267 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
4271 /* Verify the authentication data */
4272 if (!silc_auth_verify_data(auth, tmp_len, admin->auth_meth,
4273 admin->auth_data, admin->auth_data_len,
4274 idata->hash, client->id, SILC_ID_CLIENT)) {
4275 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
4276 SILC_STATUS_ERR_AUTH_FAILED);
4280 /* Client is now router operator */
4281 client->mode |= SILC_UMODE_ROUTER_OPERATOR;
4283 /* Send UMODE change to primary router */
4284 if (!server->standalone)
4285 silc_server_send_notify_umode(server, server->router->connection, TRUE,
4286 client->id, client->mode);
4288 /* Send reply to the sender */
4289 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
4293 silc_server_command_free(cmd);
4296 /* Server side command of CONNECT. Connects us to the specified remote
4297 server or router. */
4299 SILC_SERVER_CMD_FUNC(connect)
4301 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4302 SilcServer server = cmd->server;
4303 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
4304 unsigned char *tmp, *host;
4306 uint32 port = SILC_PORT;
4308 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_CONNECT, cmd, 1, 2);
4310 if (!client || cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
4313 /* Check whether client has the permissions. */
4314 if (client->mode == SILC_UMODE_NONE) {
4315 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CONNECT,
4316 SILC_STATUS_ERR_NO_SERVER_PRIV);
4320 if (server->server_type == SILC_ROUTER &&
4321 client->mode & SILC_UMODE_SERVER_OPERATOR) {
4322 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CONNECT,
4323 SILC_STATUS_ERR_NO_ROUTER_PRIV);
4327 /* Get the remote server */
4328 host = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
4330 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CONNECT,
4331 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
4336 tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
4338 SILC_GET32_MSB(port, tmp);
4340 /* Create the connection. It is done with timeout and is async. */
4341 silc_server_create_connection(server, host, port);
4343 /* Send reply to the sender */
4344 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CONNECT,
4348 silc_server_command_free(cmd);
4351 /* Server side of command BAN. This is used to manage the ban list of the
4352 channel. To add clients and remove clients from the ban list. */
4354 SILC_SERVER_CMD_FUNC(ban)
4356 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4357 SilcServer server = cmd->server;
4358 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
4360 SilcChannelEntry channel;
4361 SilcChannelClientEntry chl;
4362 SilcChannelID *channel_id = NULL;
4363 unsigned char *id, *add, *del;
4364 uint32 id_len, tmp_len;
4365 uint16 ident = silc_command_get_ident(cmd->payload);
4367 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
4370 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_BAN, cmd, 0, 3);
4372 /* Get Channel ID */
4373 id = silc_argument_get_arg_type(cmd->args, 1, &id_len);
4375 channel_id = silc_id_payload_parse_id(id, id_len);
4377 silc_server_command_send_status_reply(cmd, SILC_COMMAND_BAN,
4378 SILC_STATUS_ERR_NO_CHANNEL_ID);
4383 /* Get channel entry. The server must know about the channel since the
4384 client is expected to be on the channel. */
4385 channel = silc_idlist_find_channel_by_id(server->local_list,
4388 channel = silc_idlist_find_channel_by_id(server->global_list,
4391 silc_server_command_send_status_reply(cmd, SILC_COMMAND_BAN,
4392 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
4397 /* Check whether this client is on the channel */
4398 if (!silc_server_client_on_channel(client, channel)) {
4399 silc_server_command_send_status_reply(cmd, SILC_COMMAND_BAN,
4400 SILC_STATUS_ERR_NOT_ON_CHANNEL);
4404 /* Get entry to the channel user list */
4405 silc_hash_table_find(channel->user_list, client, NULL, (void *)&chl);
4407 /* The client must be at least channel operator. */
4408 if (!(chl->mode & SILC_CHANNEL_UMODE_CHANOP)) {
4409 silc_server_command_send_status_reply(cmd, SILC_COMMAND_BAN,
4410 SILC_STATUS_ERR_NO_CHANNEL_PRIV);
4414 /* Get the new ban and add it to the ban list */
4415 add = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
4417 if (!channel->ban_list)
4418 channel->ban_list = silc_calloc(tmp_len + 2, sizeof(*channel->ban_list));
4420 channel->ban_list = silc_realloc(channel->ban_list,
4421 sizeof(*channel->ban_list) *
4423 strlen(channel->ban_list) + 2));
4424 if (add[tmp_len - 1] == ',')
4425 add[tmp_len - 1] = '\0';
4427 strncat(channel->ban_list, add, tmp_len);
4428 strncat(channel->ban_list, ",", 1);
4431 /* Get the ban to be removed and remove it from the list */
4432 del = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
4433 if (del && channel->ban_list) {
4434 char *start, *end, *n;
4436 if (!strncmp(channel->ban_list, del, strlen(channel->ban_list) - 1)) {
4437 silc_free(channel->ban_list);
4438 channel->ban_list = NULL;
4440 start = strstr(channel->ban_list, del);
4441 if (start && strlen(start) >= tmp_len) {
4442 end = start + tmp_len;
4443 n = silc_calloc(strlen(channel->ban_list) - tmp_len, sizeof(*n));
4444 strncat(n, channel->ban_list, start - channel->ban_list);
4445 strncat(n, end + 1, ((channel->ban_list + strlen(channel->ban_list)) -
4447 silc_free(channel->ban_list);
4448 channel->ban_list = n;
4453 /* Send the BAN notify type to our primary router. */
4454 if (!server->standalone && (add || del))
4455 silc_server_send_notify_ban(server, server->router->connection,
4456 server->server_type == SILC_ROUTER ?
4457 TRUE : FALSE, channel, add, del);
4459 /* Send the reply back to the client */
4460 if (channel->ban_list)
4462 silc_command_reply_payload_encode_va(SILC_COMMAND_BAN,
4463 SILC_STATUS_OK, ident, 2,
4465 3, channel->ban_list,
4466 strlen(channel->ban_list) - 1);
4469 silc_command_reply_payload_encode_va(SILC_COMMAND_BAN,
4470 SILC_STATUS_OK, ident, 1,
4473 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
4474 packet->data, packet->len, FALSE);
4476 silc_buffer_free(packet);
4480 silc_free(channel_id);
4481 silc_server_command_free(cmd);
4484 /* Server side command of CLOSE. Closes connection to a specified server. */
4486 SILC_SERVER_CMD_FUNC(close)
4488 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4489 SilcServer server = cmd->server;
4490 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
4491 SilcServerEntry server_entry;
4492 SilcSocketConnection sock;
4495 unsigned char *name;
4496 uint32 port = SILC_PORT;
4498 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_CLOSE, cmd, 1, 2);
4500 if (!client || cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
4503 /* Check whether client has the permissions. */
4504 if (client->mode == SILC_UMODE_NONE) {
4505 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CLOSE,
4506 SILC_STATUS_ERR_NO_SERVER_PRIV);
4510 /* Get the remote server */
4511 name = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
4513 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CLOSE,
4514 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
4519 tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
4521 SILC_GET32_MSB(port, tmp);
4523 server_entry = silc_idlist_find_server_by_conn(server->local_list,
4525 if (!server_entry) {
4526 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CLOSE,
4527 SILC_STATUS_ERR_NO_SERVER_ID);
4531 /* Send reply to the sender */
4532 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CLOSE,
4535 /* Close the connection to the server */
4536 sock = (SilcSocketConnection)server_entry->connection;
4537 silc_server_free_sock_user_data(server, sock);
4538 silc_server_close_connection(server, sock);
4541 silc_server_command_free(cmd);
4544 /* Server side command of SHUTDOWN. Shutdowns the server and closes all
4545 active connections. */
4547 SILC_SERVER_CMD_FUNC(shutdown)
4549 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4550 SilcServer server = cmd->server;
4551 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
4553 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_SHUTDOWN, cmd, 0, 0);
4555 if (!client || cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
4558 /* Check whether client has the permission. */
4559 if (client->mode == SILC_UMODE_NONE) {
4560 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SHUTDOWN,
4561 SILC_STATUS_ERR_NO_SERVER_PRIV);
4565 /* Send reply to the sender */
4566 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SHUTDOWN,
4569 /* Then, gracefully, or not, bring the server down. */
4570 silc_server_stop(server);
4574 silc_server_command_free(cmd);
4577 /* Server side command of LEAVE. Removes client from a channel. */
4579 SILC_SERVER_CMD_FUNC(leave)
4581 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4582 SilcServer server = cmd->server;
4583 SilcSocketConnection sock = cmd->sock;
4584 SilcClientEntry id_entry = (SilcClientEntry)cmd->sock->user_data;
4585 SilcChannelID *id = NULL;
4586 SilcChannelEntry channel;
4590 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_LEAVE, cmd, 1, 2);
4592 /* Get Channel ID */
4593 tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
4595 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
4596 SILC_STATUS_ERR_NO_CHANNEL_ID);
4599 id = silc_id_payload_parse_id(tmp, len);
4601 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
4602 SILC_STATUS_ERR_NO_CHANNEL_ID);
4606 /* Get channel entry */
4607 channel = silc_idlist_find_channel_by_id(server->local_list, id, NULL);
4609 channel = silc_idlist_find_channel_by_id(server->global_list, id, NULL);
4611 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
4612 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
4617 /* Check whether this client is on the channel */
4618 if (!silc_server_client_on_channel(id_entry, channel)) {
4619 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
4620 SILC_STATUS_ERR_NOT_ON_CHANNEL);
4624 /* Notify routers that they should remove this client from their list
4625 of clients on the channel. Send LEAVE notify type. */
4626 if (!server->standalone)
4627 silc_server_send_notify_leave(server, server->router->connection,
4628 server->server_type == SILC_ROUTER ?
4629 TRUE : FALSE, channel, id_entry->id);
4631 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
4634 /* Remove client from channel */
4635 if (!silc_server_remove_from_one_channel(server, sock, channel, id_entry,
4637 /* If the channel does not exist anymore we won't send anything */
4640 if (!(channel->mode & SILC_CHANNEL_MODE_PRIVKEY)) {
4641 /* Re-generate channel key */
4642 silc_server_create_channel_key(server, channel, 0);
4644 /* Send the channel key */
4645 silc_server_send_channel_key(server, NULL, channel,
4646 server->server_type == SILC_ROUTER ?
4647 FALSE : !server->standalone);
4653 silc_server_command_free(cmd);
4656 /* Server side of command USERS. Resolves clients and their USERS currently
4657 joined on the requested channel. The list of Client ID's and their modes
4658 on the channel is sent back. */
4660 SILC_SERVER_CMD_FUNC(users)
4662 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4663 SilcServer server = cmd->server;
4664 SilcChannelEntry channel;
4667 unsigned char *channel_id;
4668 uint32 channel_id_len;
4669 SilcBuffer client_id_list;
4670 SilcBuffer client_mode_list;
4671 unsigned char lc[4];
4672 uint32 list_count = 0;
4673 uint16 ident = silc_command_get_ident(cmd->payload);
4675 SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_USERS, cmd, 1, 1);
4677 /* Get Channel ID */
4678 channel_id = silc_argument_get_arg_type(cmd->args, 1, &channel_id_len);
4680 silc_server_command_send_status_reply(cmd, SILC_COMMAND_USERS,
4681 SILC_STATUS_ERR_NO_CHANNEL_ID);
4684 id = silc_id_payload_parse_id(channel_id, channel_id_len);
4686 silc_server_command_send_status_reply(cmd, SILC_COMMAND_USERS,
4687 SILC_STATUS_ERR_NO_CHANNEL_ID);
4691 /* If we are server and we don't know about this channel we will send
4692 the command to our router. If we know about the channel then we also
4693 have the list of users already. */
4694 channel = silc_idlist_find_channel_by_id(server->local_list, id, NULL);
4696 if (server->server_type == SILC_SERVER && !server->standalone &&
4700 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
4701 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
4703 /* Send USERS command */
4704 silc_server_packet_send(server, server->router->connection,
4705 SILC_PACKET_COMMAND, cmd->packet->flags,
4706 tmpbuf->data, tmpbuf->len, TRUE);
4708 /* Reprocess this packet after received reply */
4709 silc_server_command_pending(server, SILC_COMMAND_USERS,
4710 silc_command_get_ident(cmd->payload),
4711 silc_server_command_destructor,
4712 silc_server_command_users,
4713 silc_server_command_dup(cmd));
4714 cmd->pending = TRUE;
4715 silc_command_set_ident(cmd->payload, ident);
4717 silc_buffer_free(tmpbuf);
4722 /* We are router and we will check the global list as well. */
4723 channel = silc_idlist_find_channel_by_id(server->global_list, id, NULL);
4725 /* Channel really does not exist */
4726 silc_server_command_send_status_reply(cmd, SILC_COMMAND_USERS,
4727 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
4732 /* Get the users list */
4733 silc_server_get_users_on_channel(server, channel, &client_id_list,
4734 &client_mode_list, &list_count);
4737 SILC_PUT32_MSB(list_count, lc);
4740 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_USERS,
4741 SILC_STATUS_OK, ident, 4,
4742 2, channel_id, channel_id_len,
4744 4, client_id_list->data,
4745 client_id_list->len,
4746 5, client_mode_list->data,
4747 client_mode_list->len);
4748 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
4749 packet->data, packet->len, FALSE);
4751 silc_buffer_free(packet);
4752 silc_buffer_free(client_id_list);
4753 silc_buffer_free(client_mode_list);
4757 silc_server_command_free(cmd);
4760 /* Server side of command GETKEY. This fetches the client's public key
4761 from the server where to the client is connected. */
4763 SILC_SERVER_CMD_FUNC(getkey)
4765 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4766 SilcServer server = cmd->server;
4768 SilcClientEntry client;
4769 SilcServerEntry server_entry;
4770 SilcClientID *client_id = NULL;
4771 SilcServerID *server_id = NULL;
4772 SilcIDPayload idp = NULL;
4773 uint16 ident = silc_command_get_ident(cmd->payload);
4779 SILC_LOG_DEBUG(("Start"));
4781 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
4783 silc_server_command_send_status_reply(cmd, SILC_COMMAND_GETKEY,
4784 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
4787 idp = silc_id_payload_parse_data(tmp, tmp_len);
4789 silc_server_command_send_status_reply(cmd, SILC_COMMAND_GETKEY,
4790 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
4794 id_type = silc_id_payload_get_type(idp);
4795 if (id_type == SILC_ID_CLIENT) {
4796 client_id = silc_id_payload_get_id(idp);
4798 /* If the client is not found from local list there is no chance it
4799 would be locally connected client so send the command further. */
4800 client = silc_idlist_find_client_by_id(server->local_list,
4803 client = silc_idlist_find_client_by_id(server->global_list,
4806 if ((!client && !cmd->pending && !server->standalone) ||
4807 (client && !client->connection && !cmd->pending &&
4808 !server->standalone) ||
4809 (client && !client->data.public_key && !cmd->pending &&
4810 !server->standalone)) {
4813 SilcSocketConnection dest_sock;
4815 dest_sock = silc_server_get_client_route(server, NULL, 0,
4820 old_ident = silc_command_get_ident(cmd->payload);
4821 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
4822 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
4824 silc_server_packet_send(server, dest_sock,
4825 SILC_PACKET_COMMAND, cmd->packet->flags,
4826 tmpbuf->data, tmpbuf->len, TRUE);
4828 /* Reprocess this packet after received reply from router */
4829 silc_server_command_pending(server, SILC_COMMAND_GETKEY,
4830 silc_command_get_ident(cmd->payload),
4831 silc_server_command_destructor,
4832 silc_server_command_getkey,
4833 silc_server_command_dup(cmd));
4834 cmd->pending = TRUE;
4836 silc_command_set_ident(cmd->payload, old_ident);
4837 silc_buffer_free(tmpbuf);
4841 if (!client && cmd->pending) {
4842 silc_server_command_send_status_reply(cmd, SILC_COMMAND_GETKEY,
4843 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID);
4847 /* The client is locally connected, just get the public key and
4849 tmp = silc_pkcs_public_key_encode(client->data.public_key, &tmp_len);
4850 pk = silc_buffer_alloc(4 + tmp_len);
4851 silc_buffer_pull_tail(pk, SILC_BUFFER_END(pk));
4852 silc_buffer_format(pk,
4853 SILC_STR_UI_SHORT(tmp_len),
4854 SILC_STR_UI_SHORT(SILC_SKE_PK_TYPE_SILC),
4855 SILC_STR_UI_XNSTRING(tmp, tmp_len),
4859 } else if (id_type == SILC_ID_SERVER) {
4860 server_id = silc_id_payload_get_id(idp);
4862 /* If the server is not found from local list there is no chance it
4863 would be locally connected server so send the command further. */
4864 server_entry = silc_idlist_find_server_by_id(server->local_list,
4867 server_entry = silc_idlist_find_server_by_id(server->global_list,
4870 if ((!server_entry && !cmd->pending && !server->standalone) ||
4871 (server_entry && !server_entry->connection && !cmd->pending &&
4872 !server->standalone) ||
4873 (server_entry && !server_entry->data.public_key && !cmd->pending &&
4874 !server->standalone)) {
4878 old_ident = silc_command_get_ident(cmd->payload);
4879 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
4880 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
4882 silc_server_packet_send(server, server->router->connection,
4883 SILC_PACKET_COMMAND, cmd->packet->flags,
4884 tmpbuf->data, tmpbuf->len, TRUE);
4886 /* Reprocess this packet after received reply from router */
4887 silc_server_command_pending(server, SILC_COMMAND_GETKEY,
4888 silc_command_get_ident(cmd->payload),
4889 silc_server_command_destructor,
4890 silc_server_command_getkey,
4891 silc_server_command_dup(cmd));
4892 cmd->pending = TRUE;
4894 silc_command_set_ident(cmd->payload, old_ident);
4895 silc_buffer_free(tmpbuf);
4899 if (!server_entry && cmd->pending) {
4900 silc_server_command_send_status_reply(cmd, SILC_COMMAND_GETKEY,
4901 SILC_STATUS_ERR_NO_SUCH_SERVER_ID);
4905 /* The client is locally connected, just get the public key and
4907 tmp = silc_pkcs_public_key_encode(server_entry->data.public_key, &tmp_len);
4908 pk = silc_buffer_alloc(4 + tmp_len);
4909 silc_buffer_pull_tail(pk, SILC_BUFFER_END(pk));
4910 silc_buffer_format(pk,
4911 SILC_STR_UI_SHORT(tmp_len),
4912 SILC_STR_UI_SHORT(SILC_SKE_PK_TYPE_SILC),
4913 SILC_STR_UI_XNSTRING(tmp, tmp_len),
4920 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
4921 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_GETKEY,
4922 SILC_STATUS_OK, ident, 2,
4924 3, pk->data, pk->len);
4925 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
4926 packet->data, packet->len, FALSE);
4927 silc_buffer_free(packet);
4928 silc_buffer_free(pk);
4932 silc_id_payload_free(idp);
4933 silc_free(client_id);
4934 silc_free(server_id);
4935 silc_server_command_free(cmd);