5 Author: Pekka Riikonen <priikone@silcnet.org>
7 Copyright (C) 1997 - 2002 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; version 2 of the License.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
21 #include "serverincludes.h"
22 #include "server_internal.h"
24 static int silc_server_is_registered(SilcServer server,
25 SilcSocketConnection sock,
26 SilcServerCommandContext cmd,
29 silc_server_command_send_status_reply(SilcServerCommandContext cmd,
34 silc_server_command_send_status_data(SilcServerCommandContext cmd,
39 const unsigned char *arg,
42 silc_server_command_pending_error_check(SilcServerCommandContext cmd,
43 SilcServerCommandReplyContext cmdr,
45 SILC_TASK_CALLBACK(silc_server_command_process_timeout);
47 /* Server command list. */
48 SilcServerCommand silc_command_list[] =
50 SILC_SERVER_CMD(whois, WHOIS, SILC_CF_LAG | SILC_CF_REG),
51 SILC_SERVER_CMD(whowas, WHOWAS, SILC_CF_LAG | SILC_CF_REG),
52 SILC_SERVER_CMD(identify, IDENTIFY, SILC_CF_LAG | SILC_CF_REG),
53 SILC_SERVER_CMD(nick, NICK, SILC_CF_LAG_STRICT | SILC_CF_REG),
54 SILC_SERVER_CMD(list, LIST, SILC_CF_LAG_STRICT | SILC_CF_REG),
55 SILC_SERVER_CMD(topic, TOPIC, SILC_CF_LAG | SILC_CF_REG),
56 SILC_SERVER_CMD(invite, INVITE, SILC_CF_LAG | SILC_CF_REG),
57 SILC_SERVER_CMD(quit, QUIT, SILC_CF_LAG | SILC_CF_REG),
58 SILC_SERVER_CMD(kill, KILL, SILC_CF_LAG_STRICT | SILC_CF_REG | SILC_CF_OPER),
59 SILC_SERVER_CMD(info, INFO, SILC_CF_LAG | SILC_CF_REG),
60 SILC_SERVER_CMD(stats, STATS, SILC_CF_LAG | SILC_CF_REG),
61 SILC_SERVER_CMD(ping, PING, SILC_CF_LAG | SILC_CF_REG),
62 SILC_SERVER_CMD(oper, OPER, SILC_CF_LAG | SILC_CF_REG | SILC_CF_OPER),
63 SILC_SERVER_CMD(join, JOIN, SILC_CF_LAG_STRICT | SILC_CF_REG),
64 SILC_SERVER_CMD(motd, MOTD, SILC_CF_LAG | SILC_CF_REG),
65 SILC_SERVER_CMD(umode, UMODE, SILC_CF_LAG | SILC_CF_REG),
66 SILC_SERVER_CMD(cmode, CMODE, SILC_CF_LAG_STRICT | SILC_CF_REG),
67 SILC_SERVER_CMD(cumode, CUMODE, SILC_CF_LAG | SILC_CF_REG),
68 SILC_SERVER_CMD(kick, KICK, SILC_CF_LAG_STRICT | SILC_CF_REG),
69 SILC_SERVER_CMD(ban, BAN, SILC_CF_LAG_STRICT | SILC_CF_REG),
70 SILC_SERVER_CMD(detach, DETACH, SILC_CF_LAG_STRICT | SILC_CF_REG),
71 SILC_SERVER_CMD(watch, WATCH, SILC_CF_LAG | SILC_CF_REG),
72 SILC_SERVER_CMD(silcoper, SILCOPER,
73 SILC_CF_LAG | SILC_CF_REG | SILC_CF_SILC_OPER),
74 SILC_SERVER_CMD(leave, LEAVE, SILC_CF_LAG_STRICT | SILC_CF_REG),
75 SILC_SERVER_CMD(users, USERS, SILC_CF_LAG | SILC_CF_REG),
76 SILC_SERVER_CMD(getkey, GETKEY, SILC_CF_LAG | SILC_CF_REG),
78 SILC_SERVER_CMD(connect, PRIV_CONNECT,
79 SILC_CF_LAG | SILC_CF_REG | SILC_CF_OPER),
80 SILC_SERVER_CMD(close, PRIV_CLOSE,
81 SILC_CF_LAG | SILC_CF_REG | SILC_CF_OPER),
82 SILC_SERVER_CMD(shutdown, PRIV_SHUTDOWN, SILC_CF_LAG | SILC_CF_REG |
88 /* Performs several checks to the command. It first checks whether this
89 command was called as pending command callback. If it was then it checks
90 whether error occurred in the command reply where the pending command
93 It also checks that the requested command includes correct amount
95 #define SILC_SERVER_COMMAND_CHECK(command, context, min, max) \
99 if (silc_server_command_pending_error_check(cmd, context2, command)) { \
100 SILC_LOG_DEBUG(("Error occurred in command reply, command not called")); \
101 silc_server_command_free(cmd); \
105 _argc = silc_argument_get_arg_num(cmd->args); \
107 SILC_LOG_DEBUG(("Not enough parameters in command")); \
108 silc_server_command_send_status_reply(cmd, command, \
109 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS, \
111 silc_server_command_free(cmd); \
115 SILC_LOG_DEBUG(("Too many parameters in command")); \
116 silc_server_command_send_status_reply(cmd, command, \
117 SILC_STATUS_ERR_TOO_MANY_PARAMS, \
119 silc_server_command_free(cmd); \
124 /* Returns TRUE if the connection is registered. Unregistered connections
125 usually cannot send commands hence the check. */
127 static int silc_server_is_registered(SilcServer server,
128 SilcSocketConnection sock,
129 SilcServerCommandContext cmd,
132 SilcIDListData idata = (SilcIDListData)sock->user_data;
137 if (idata->status & SILC_IDLIST_STATUS_REGISTERED)
140 silc_server_command_send_status_reply(cmd, command,
141 SILC_STATUS_ERR_NOT_REGISTERED, 0);
145 /* Internal context to hold data when executed command with timeout. */
147 SilcServerCommandContext ctx;
148 SilcServerCommand *cmd;
149 } *SilcServerCommandTimeout;
151 /* Timeout callback to process commands with timeout for client. Client's
152 commands are always executed with timeout. */
154 SILC_TASK_CALLBACK(silc_server_command_process_timeout)
156 SilcServerCommandTimeout timeout = (SilcServerCommandTimeout)context;
157 SilcClientEntry client = (SilcClientEntry)timeout->ctx->sock->user_data;
160 SILC_LOG_DEBUG(("Client entry is invalid"));
161 silc_server_command_free(timeout->ctx);
165 /* Update access time */
166 client->last_command = time(NULL);
168 if (!(timeout->cmd->flags & SILC_CF_REG)) {
169 SILC_LOG_DEBUG(("Calling %s command",
170 silc_get_command_name(timeout->cmd->cmd)));
171 timeout->cmd->cb(timeout->ctx, NULL);
172 } else if (silc_server_is_registered(timeout->ctx->server,
175 timeout->cmd->cmd)) {
176 SILC_LOG_DEBUG(("Calling %s command",
177 silc_get_command_name(timeout->cmd->cmd)));
178 timeout->cmd->cb(timeout->ctx, NULL);
180 SILC_LOG_DEBUG(("Client is not registered"));
181 silc_server_command_free(timeout->ctx);
187 /* Processes received command packet. */
189 void silc_server_command_process(SilcServer server,
190 SilcSocketConnection sock,
191 SilcPacketContext *packet)
193 SilcServerCommandContext ctx;
194 SilcServerCommand *cmd;
197 /* Allocate command context. This must be free'd by the
198 command routine receiving it. */
199 ctx = silc_server_command_alloc();
200 ctx->server = server;
201 ctx->sock = silc_socket_dup(sock);
202 ctx->packet = silc_packet_context_dup(packet); /* Save original packet */
204 /* Parse the command payload in the packet */
205 ctx->payload = silc_command_payload_parse(packet->buffer->data,
206 packet->buffer->len);
208 SILC_LOG_ERROR(("Bad command payload, packet dropped"));
209 silc_packet_context_free(packet);
210 silc_socket_free(ctx->sock);
214 ctx->args = silc_command_get_args(ctx->payload);
216 /* Get the command */
217 command = silc_command_get(ctx->payload);
218 for (cmd = silc_command_list; cmd->cb; cmd++)
219 if (cmd->cmd == command)
222 if (!cmd || !cmd->cb) {
223 SILC_LOG_DEBUG(("Unknown command %d", command));
224 silc_server_command_send_status_reply(ctx, command,
225 SILC_STATUS_ERR_UNKNOWN_COMMAND, 0);
226 silc_server_command_free(ctx);
230 /* Execute client's commands always with timeout. Normally they are
231 executed with zero (0) timeout but if client is sending command more
232 frequently than once in 2 seconds, then the timeout may be 0 to 2
234 if (sock->type == SILC_SOCKET_TYPE_CLIENT) {
235 SilcClientEntry client = (SilcClientEntry)sock->user_data;
236 SilcServerCommandTimeout timeout;
240 SILC_LOG_DEBUG(("Client entry is invalid"));
241 silc_server_command_free(ctx);
244 timeout = silc_calloc(1, sizeof(*timeout));
248 if (client->last_command && (time(NULL) - client->last_command) < 2) {
249 client->fast_command++;
252 if (client->fast_command - 2 <= 0)
253 client->fast_command = 0;
255 client->fast_command -= 2;
259 if (!fast && ((cmd->flags & SILC_CF_LAG_STRICT) ||
260 (client->fast_command > 5 && cmd->flags & SILC_CF_LAG)))
261 silc_schedule_task_add(server->schedule, sock->sock,
262 silc_server_command_process_timeout, timeout,
263 (client->fast_command < 3 ? 0 :
264 2 - (time(NULL) - client->last_command)),
265 (client->fast_command < 3 ? 200000 : 0),
266 SILC_TASK_TIMEOUT, SILC_TASK_PRI_NORMAL);
268 silc_schedule_task_add(server->schedule, sock->sock,
269 silc_server_command_process_timeout, timeout,
270 0, 1, SILC_TASK_TIMEOUT, SILC_TASK_PRI_NORMAL);
274 /* Execute for server */
276 if (!(cmd->flags & SILC_CF_REG)) {
277 SILC_LOG_DEBUG(("Calling %s command", silc_get_command_name(cmd->cmd)));
279 } else if (silc_server_is_registered(server, sock, ctx, cmd->cmd)) {
280 SILC_LOG_DEBUG(("Calling %s command", silc_get_command_name(cmd->cmd)));
283 SILC_LOG_DEBUG(("Server is not registered"));
284 silc_server_command_free(ctx);
288 /* Allocate Command Context */
290 SilcServerCommandContext silc_server_command_alloc()
292 SilcServerCommandContext ctx = silc_calloc(1, sizeof(*ctx));
297 /* Free's the command context allocated before executing the command */
299 void silc_server_command_free(SilcServerCommandContext ctx)
302 SILC_LOG_DEBUG(("Command context %p refcnt %d->%d", ctx, ctx->users + 1,
304 if (ctx->users < 1) {
306 silc_command_payload_free(ctx->payload);
308 silc_packet_context_free(ctx->packet);
310 silc_socket_free(ctx->sock); /* Decrease reference counter */
315 /* Duplicate Command Context by adding reference counter. The context won't
316 be free'd untill it hits zero. */
318 SilcServerCommandContext
319 silc_server_command_dup(SilcServerCommandContext ctx)
322 SILC_LOG_DEBUG(("Command context %p refcnt %d->%d", ctx, ctx->users - 1,
327 /* Timeout for pending command. If reply to pending command never arrives
328 this is called to free resources. */
330 SILC_TASK_CALLBACK(silc_server_command_pending_timeout)
332 SilcServer server = app_context;
333 SilcServerCommandPending *reply = context;
334 SilcServerCommandReplyContext cmdr;
338 SILC_LOG_DEBUG(("Timeout pending command"));
340 /* Allocate temporary and bogus command reply context */
341 cmdr = silc_calloc(1, sizeof(*cmdr));
342 cmdr->server = server;
343 cmdr->ident = reply->ident;
345 /* Check for pending commands and mark to be exeucted */
347 silc_server_command_pending_check(server, reply->reply_cmd,
348 reply->ident, &cmdr->callbacks_count);
350 /* Create bogus command reply with an error inside */
352 silc_command_reply_payload_encode_va(reply->reply_cmd ? reply->reply_cmd :
353 SILC_COMMAND_RESERVED,
354 SILC_STATUS_ERR_TIMEDOUT, 0,
356 cmdr->payload = silc_command_payload_parse(tmpreply->data, tmpreply->len);
357 silc_buffer_free(tmpreply);
359 /* Call all callbacks. Same as SILC_SERVER_PENDING_EXEC macro. */
360 for (i = 0; i < cmdr->callbacks_count; i++)
361 if (cmdr->callbacks[i].callback)
362 (*cmdr->callbacks[i].callback)(cmdr->callbacks[i].context, cmdr);
364 silc_server_command_pending_del(server, reply->reply_cmd, reply->ident);
365 silc_server_command_reply_free(cmdr);
368 /* Add new pending command to be executed when reply to a command has been
369 received. The `reply_cmd' is the command that will call the `callback'
370 with `context' when reply has been received. It can be SILC_COMMAND_NONE
371 to match any command with the `ident'. If `ident' is non-zero
372 the `callback' will be executed when received reply with command
373 identifier `ident'. If there already exists pending command for the
374 specified command, ident, callback and context this function has no
377 bool silc_server_command_pending(SilcServer server,
378 SilcCommand reply_cmd,
380 SilcCommandCb callback,
383 return silc_server_command_pending_timed(server, reply_cmd, ident, callback,
387 /* Same as silc_server_command_pending with specific timeout for pending
388 commands. If the `timeout' is zero default timeout is used. */
390 bool silc_server_command_pending_timed(SilcServer server,
391 SilcCommand reply_cmd,
393 SilcCommandCb callback,
397 SilcServerCommandPending *reply;
399 /* Check whether identical pending already exists for same command,
400 ident, callback and callback context. If it does then it would be
401 error to register it again. */
402 silc_dlist_start(server->pending_commands);
403 while ((reply = silc_dlist_get(server->pending_commands)) != SILC_LIST_END) {
404 if (reply->reply_cmd == reply_cmd && reply->ident == ident &&
405 reply->callback == callback && reply->context == context)
409 reply = silc_calloc(1, sizeof(*reply));
410 reply->reply_cmd = reply_cmd;
411 reply->ident = ident;
412 reply->context = context;
413 reply->callback = callback;
415 silc_schedule_task_add(server->schedule, 0,
416 silc_server_command_pending_timeout, reply,
417 timeout ? timeout : 10, 0,
418 SILC_TASK_TIMEOUT, SILC_TASK_PRI_LOW);
419 silc_dlist_add(server->pending_commands, reply);
424 /* Deletes pending command by reply command type. */
426 void silc_server_command_pending_del(SilcServer server,
427 SilcCommand reply_cmd,
430 SilcServerCommandPending *r;
432 silc_dlist_start(server->pending_commands);
433 while ((r = silc_dlist_get(server->pending_commands)) != SILC_LIST_END) {
434 if ((r->reply_cmd == reply_cmd || (r->reply_cmd == SILC_COMMAND_NONE &&
436 && r->ident == ident) {
437 silc_dlist_del(server->pending_commands, r);
439 silc_schedule_task_del(server->schedule, r->timeout);
445 /* Checks for pending commands and marks callbacks to be called from
446 the command reply function. Returns TRUE if there were pending command. */
448 SilcServerCommandPendingCallbacks
449 silc_server_command_pending_check(SilcServer server,
452 SilcUInt32 *callbacks_count)
454 SilcServerCommandPending *r;
455 SilcServerCommandPendingCallbacks callbacks = NULL;
458 silc_dlist_start(server->pending_commands);
459 while ((r = silc_dlist_get(server->pending_commands)) != SILC_LIST_END) {
460 if ((r->reply_cmd == command || r->reply_cmd == SILC_COMMAND_NONE)
461 && r->ident == ident) {
462 callbacks = silc_realloc(callbacks, sizeof(*callbacks) * (i + 1));
463 callbacks[i].context = r->context;
464 callbacks[i].callback = r->callback;
465 r->reply_check = TRUE;
470 *callbacks_count = i;
474 /* Sends simple status message as command reply packet */
477 silc_server_command_send_status_reply(SilcServerCommandContext cmd,
484 SILC_LOG_DEBUG(("Sending command status %d", status));
487 silc_command_reply_payload_encode_va(command, status, error,
488 silc_command_get_ident(cmd->payload),
490 silc_server_packet_send(cmd->server, cmd->sock,
491 SILC_PACKET_COMMAND_REPLY, 0,
492 buffer->data, buffer->len, FALSE);
493 silc_buffer_free(buffer);
496 /* Sends command status reply with one extra argument. The argument
497 type must be sent as argument. */
500 silc_server_command_send_status_data(SilcServerCommandContext cmd,
505 const unsigned char *arg,
510 SILC_LOG_DEBUG(("Sending command status %d", status));
513 silc_command_reply_payload_encode_va(command, status, 0,
514 silc_command_get_ident(cmd->payload),
515 1, arg_type, arg, arg_len);
516 silc_server_packet_send(cmd->server, cmd->sock,
517 SILC_PACKET_COMMAND_REPLY, 0,
518 buffer->data, buffer->len, FALSE);
519 silc_buffer_free(buffer);
522 /* This function can be called to check whether in the command reply
523 an error occurred. This function has no effect if this is called
524 when the command function was not called as pending command callback.
525 This returns TRUE if error had occurred. */
528 silc_server_command_pending_error_check(SilcServerCommandContext cmd,
529 SilcServerCommandReplyContext cmdr,
532 if (!cmd->pending || !cmdr)
535 if (!silc_command_get_status(cmdr->payload, NULL, NULL)) {
538 /* Send the same command reply payload */
539 silc_command_set_command(cmdr->payload, silc_command_get(cmd->payload));
540 silc_command_set_ident(cmdr->payload,
541 silc_command_get_ident(cmd->payload));
542 buffer = silc_command_payload_encode_payload(cmdr->payload);
543 silc_server_packet_send(cmd->server, cmd->sock,
544 SILC_PACKET_COMMAND_REPLY, 0,
545 buffer->data, buffer->len, FALSE);
546 silc_buffer_free(buffer);
553 /* Server side of command WHOIS. */
555 SILC_SERVER_CMD_FUNC(whois)
557 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
558 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_WHOIS, cmd, 1, 256);
559 silc_server_query_command(cmd->server, SILC_COMMAND_WHOIS, cmd);
560 silc_server_command_free(cmd);
563 /* Server side of command WHOWAS. */
565 SILC_SERVER_CMD_FUNC(whowas)
567 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
568 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_WHOWAS, cmd, 1, 2);
569 silc_server_query_command(cmd->server, SILC_COMMAND_WHOWAS, cmd);
570 silc_server_command_free(cmd);
573 /* Server side of command IDENTIFY. */
575 SILC_SERVER_CMD_FUNC(identify)
577 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
578 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_IDENTIFY, cmd, 1, 256);
579 silc_server_query_command(cmd->server, SILC_COMMAND_IDENTIFY, cmd);
580 silc_server_command_free(cmd);
583 /* Server side of command NICK. Sets nickname for user. Setting
584 nickname causes generation of a new client ID for the client. The
585 new client ID is sent to the client after changing the nickname. */
587 SILC_SERVER_CMD_FUNC(nick)
589 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
590 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
591 SilcServer server = cmd->server;
592 SilcBuffer packet, nidp, oidp = NULL;
593 SilcClientID *new_id;
596 SilcUInt16 ident = silc_command_get_ident(cmd->payload);
599 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT || !client)
602 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_NICK, cmd, 1, 1);
605 nick = silc_argument_get_arg_type(cmd->args, 1, &nick_len);
608 if (silc_server_name_bad_chars(nick, nick_len) == TRUE) {
609 silc_server_command_send_status_reply(cmd, SILC_COMMAND_NICK,
610 SILC_STATUS_ERR_BAD_NICKNAME, 0);
614 /* Check for same nickname */
615 if (!strcmp(client->nickname, nick)) {
616 nidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
620 /* Create new Client ID */
621 while (!silc_id_create_client_id(cmd->server, cmd->server->id,
623 cmd->server->md5hash, nick,
627 silc_server_command_send_status_reply(cmd, SILC_COMMAND_NICK,
628 SILC_STATUS_ERR_BAD_NICKNAME, 0);
631 snprintf(&nick[strlen(nick) - 1], 1, "%d", nickfail);
634 /* Send notify about nickname change to our router. We send the new
635 ID and ask to replace it with the old one. If we are router the
636 packet is broadcasted. Send NICK_CHANGE notify. */
637 silc_server_send_notify_nick_change(server, SILC_PRIMARY_ROUTE(server),
638 SILC_BROADCAST(server), client->id,
641 /* Check if anyone is watching the old nickname */
642 if (server->server_type == SILC_ROUTER)
643 silc_server_check_watcher_list(server, client, nick,
644 SILC_NOTIFY_TYPE_NICK_CHANGE);
646 oidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
648 /* Remove old cache entry */
649 silc_idcache_del_by_context(server->local_list->clients, client);
651 silc_free(client->id);
654 silc_free(client->nickname);
655 client->nickname = strdup(nick);
657 /* Update client cache */
658 silc_idcache_add(server->local_list->clients, client->nickname,
659 client->id, (void *)client, 0, NULL);
661 nidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
663 /* Send NICK_CHANGE notify to the client's channels */
664 silc_server_send_notify_on_channels(server, NULL, client,
665 SILC_NOTIFY_TYPE_NICK_CHANGE, 3,
666 oidp->data, oidp->len,
667 nidp->data, nidp->len,
669 strlen(client->nickname));
671 /* Check if anyone is watching the new nickname */
672 if (server->server_type == SILC_ROUTER)
673 silc_server_check_watcher_list(server, client, NULL,
674 SILC_NOTIFY_TYPE_NICK_CHANGE);
677 /* Send the new Client ID as reply command back to client */
678 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_NICK,
679 SILC_STATUS_OK, 0, ident, 2,
680 2, nidp->data, nidp->len,
681 3, nick, strlen(nick));
682 silc_server_packet_send(cmd->server, cmd->sock, SILC_PACKET_COMMAND_REPLY,
683 0, packet->data, packet->len, FALSE);
685 silc_buffer_free(packet);
686 silc_buffer_free(nidp);
688 silc_buffer_free(oidp);
691 silc_server_command_free(cmd);
694 /* Sends the LIST command reply */
697 silc_server_command_list_send_reply(SilcServerCommandContext cmd,
698 SilcChannelEntry *lch,
699 SilcUInt32 lch_count,
700 SilcChannelEntry *gch,
701 SilcUInt32 gch_count)
704 SilcBuffer packet, idp;
705 SilcChannelEntry entry;
707 SilcUInt16 ident = silc_command_get_ident(cmd->payload);
709 unsigned char usercount[4];
711 int valid_lcount = 0, valid_rcount = 0;
713 for (i = 0; i < lch_count; i++) {
714 if (lch[i]->mode & SILC_CHANNEL_MODE_SECRET)
719 for (i = 0; i < gch_count; i++) {
720 if (gch[i]->mode & SILC_CHANNEL_MODE_SECRET)
726 status = SILC_STATUS_OK;
727 if ((lch_count + gch_count) > 1)
728 status = SILC_STATUS_LIST_START;
731 for (i = 0, k = 0; i < lch_count; i++) {
737 status = SILC_STATUS_LIST_ITEM;
738 if (valid_lcount > 1 && k == valid_lcount - 1 && !valid_rcount)
739 status = SILC_STATUS_LIST_END;
741 idp = silc_id_payload_encode(entry->id, SILC_ID_CHANNEL);
743 if (entry->mode & SILC_CHANNEL_MODE_PRIVATE) {
745 memset(usercount, 0, sizeof(usercount));
747 topic = entry->topic;
748 users = silc_hash_table_count(entry->user_list);
749 SILC_PUT32_MSB(users, usercount);
754 silc_command_reply_payload_encode_va(SILC_COMMAND_LIST,
756 2, idp->data, idp->len,
757 3, entry->channel_name,
758 strlen(entry->channel_name),
759 4, topic, topic ? strlen(topic) : 0,
761 silc_server_packet_send(cmd->server, cmd->sock,
762 SILC_PACKET_COMMAND_REPLY, 0, packet->data,
764 silc_buffer_free(packet);
765 silc_buffer_free(idp);
770 for (i = 0, k = 0; i < gch_count; i++) {
776 status = SILC_STATUS_LIST_ITEM;
777 if (valid_rcount > 1 && k == valid_rcount - 1)
778 status = SILC_STATUS_LIST_END;
780 idp = silc_id_payload_encode(entry->id, SILC_ID_CHANNEL);
782 if (entry->mode & SILC_CHANNEL_MODE_PRIVATE) {
784 memset(usercount, 0, sizeof(usercount));
786 topic = entry->topic;
787 users = entry->user_count;
788 SILC_PUT32_MSB(users, usercount);
793 silc_command_reply_payload_encode_va(SILC_COMMAND_LIST,
795 2, idp->data, idp->len,
796 3, entry->channel_name,
797 strlen(entry->channel_name),
798 4, topic, topic ? strlen(topic) : 0,
800 silc_server_packet_send(cmd->server, cmd->sock,
801 SILC_PACKET_COMMAND_REPLY, 0, packet->data,
803 silc_buffer_free(packet);
804 silc_buffer_free(idp);
809 /* Server side of LIST command. This lists the channel of the requested
810 server. Secret channels are not listed. */
812 SILC_SERVER_CMD_FUNC(list)
814 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
815 SilcServer server = cmd->server;
816 SilcChannelID *channel_id = NULL;
819 SilcChannelEntry *lchannels = NULL, *gchannels = NULL;
820 SilcUInt32 lch_count = 0, gch_count = 0;
822 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_LIST, cmd, 0, 1);
824 /* If we are normal server, send the command to router, since we
825 want to know all channels in the network. */
826 if (!cmd->pending && server->server_type != SILC_ROUTER &&
827 !server->standalone) {
829 SilcUInt16 old_ident;
831 old_ident = silc_command_get_ident(cmd->payload);
832 silc_command_set_ident(cmd->payload, ++server->cmd_ident);
833 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
834 silc_server_packet_send(server, SILC_PRIMARY_ROUTE(server),
835 SILC_PACKET_COMMAND, cmd->packet->flags,
836 tmpbuf->data, tmpbuf->len, TRUE);
838 /* Reprocess this packet after received reply from router */
839 silc_server_command_pending(server, SILC_COMMAND_LIST,
840 silc_command_get_ident(cmd->payload),
841 silc_server_command_list,
842 silc_server_command_dup(cmd));
844 silc_command_set_ident(cmd->payload, old_ident);
845 silc_buffer_free(tmpbuf);
850 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
852 channel_id = silc_id_payload_parse_id(tmp, tmp_len, NULL);
854 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LIST,
855 SILC_STATUS_ERR_NO_CHANNEL_ID, 0);
860 /* Get the channels from local list */
861 lchannels = silc_idlist_get_channels(server->local_list, channel_id,
864 /* Get the channels from global list */
865 gchannels = silc_idlist_get_channels(server->global_list, channel_id,
869 silc_server_command_list_send_reply(cmd, lchannels, lch_count,
870 gchannels, gch_count);
872 silc_free(lchannels);
873 silc_free(gchannels);
876 silc_server_command_free(cmd);
879 /* Server side of TOPIC command. Sets topic for channel and/or returns
880 current topic to client. */
882 SILC_SERVER_CMD_FUNC(topic)
884 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
885 SilcServer server = cmd->server;
886 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
887 SilcChannelID *channel_id;
888 SilcChannelEntry channel;
889 SilcChannelClientEntry chl;
890 SilcBuffer packet, idp;
892 SilcUInt32 argc, tmp_len;
893 SilcUInt16 ident = silc_command_get_ident(cmd->payload);
895 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT || !client)
898 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_TOPIC, cmd, 1, 2);
900 argc = silc_argument_get_arg_num(cmd->args);
903 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
905 silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
906 SILC_STATUS_ERR_NO_CHANNEL_ID, 0);
909 channel_id = silc_id_payload_parse_id(tmp, tmp_len, NULL);
911 silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
912 SILC_STATUS_ERR_NO_CHANNEL_ID, 0);
916 /* Check whether the channel exists */
917 channel = silc_idlist_find_channel_by_id(server->local_list,
920 channel = silc_idlist_find_channel_by_id(server->global_list,
923 silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
924 SILC_STATUS_ERR_NO_SUCH_CHANNEL,
932 tmp = silc_argument_get_arg_type(cmd->args, 2, NULL);
934 silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
935 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
940 if (strlen(tmp) > 256) {
941 silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
942 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
947 /* See whether the client is on channel and has rights to change topic */
948 if (!silc_server_client_on_channel(client, channel, &chl)) {
949 silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
950 SILC_STATUS_ERR_NOT_ON_CHANNEL,
955 if (channel->mode & SILC_CHANNEL_MODE_TOPIC &&
956 !(chl->mode & SILC_CHANNEL_UMODE_CHANOP) &&
957 !(chl->mode & SILC_CHANNEL_UMODE_CHANFO)) {
958 silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
959 SILC_STATUS_ERR_NO_CHANNEL_PRIV,
964 if (!channel->topic || strcmp(channel->topic, tmp)) {
965 /* Set the topic for channel */
966 silc_free(channel->topic);
967 channel->topic = strdup(tmp);
969 /* Send TOPIC_SET notify type to the network */
970 silc_server_send_notify_topic_set(server, SILC_PRIMARY_ROUTE(server),
971 SILC_BROADCAST(server), channel,
972 client->id, SILC_ID_CLIENT,
975 /* Send notify about topic change to all clients on the channel */
976 idp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
977 silc_server_send_notify_to_channel(server, NULL, channel, FALSE,
978 SILC_NOTIFY_TYPE_TOPIC_SET, 2,
981 strlen(channel->topic));
982 silc_buffer_free(idp);
986 /* Send the topic to client as reply packet */
987 idp = silc_id_payload_encode(channel_id, SILC_ID_CHANNEL);
988 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_TOPIC,
989 SILC_STATUS_OK, 0, ident, 2,
990 2, idp->data, idp->len,
993 strlen(channel->topic) : 0);
994 silc_server_packet_send(cmd->server, cmd->sock, SILC_PACKET_COMMAND_REPLY,
995 0, packet->data, packet->len, FALSE);
997 silc_buffer_free(packet);
998 silc_buffer_free(idp);
999 silc_free(channel_id);
1002 silc_server_command_free(cmd);
1005 /* Server side of INVITE command. Invites some client to join some channel.
1006 This command is also used to manage the invite list of the channel. */
1008 SILC_SERVER_CMD_FUNC(invite)
1010 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
1011 SilcServer server = cmd->server;
1012 SilcSocketConnection sock = cmd->sock, dest_sock;
1013 SilcChannelClientEntry chl;
1014 SilcClientEntry sender, dest;
1015 SilcClientID *dest_id = NULL;
1016 SilcChannelEntry channel;
1017 SilcChannelID *channel_id = NULL;
1018 SilcIDListData idata;
1019 SilcBuffer idp, idp2, packet;
1020 unsigned char *tmp, *add, *del;
1022 SilcUInt16 ident = silc_command_get_ident(cmd->payload);
1024 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_INVITE, cmd, 1, 4);
1026 /* Get Channel ID */
1027 tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
1029 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
1030 SILC_STATUS_ERR_NO_CHANNEL_ID, 0);
1033 channel_id = silc_id_payload_parse_id(tmp, len, NULL);
1035 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
1036 SILC_STATUS_ERR_NO_CHANNEL_ID, 0);
1040 /* Get the channel entry */
1041 channel = silc_idlist_find_channel_by_id(server->local_list,
1044 channel = silc_idlist_find_channel_by_id(server->global_list,
1047 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
1048 SILC_STATUS_ERR_NO_SUCH_CHANNEL,
1054 /* Check whether the sender of this command is on the channel. */
1055 sender = (SilcClientEntry)sock->user_data;
1056 if (!sender || !silc_server_client_on_channel(sender, channel, &chl)) {
1057 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
1058 SILC_STATUS_ERR_NOT_ON_CHANNEL, 0);
1062 /* Check whether the channel is invite-only channel. If yes then the
1063 sender of this command must be at least channel operator. */
1064 if (channel->mode & SILC_CHANNEL_MODE_INVITE &&
1065 !(chl->mode & SILC_CHANNEL_UMODE_CHANOP) &&
1066 !(chl->mode & SILC_CHANNEL_UMODE_CHANFO)) {
1067 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
1068 SILC_STATUS_ERR_NO_CHANNEL_PRIV,
1073 /* Get destination client ID */
1074 tmp = silc_argument_get_arg_type(cmd->args, 2, &len);
1079 dest_id = silc_id_payload_parse_id(tmp, len, NULL);
1081 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
1082 SILC_STATUS_ERR_NO_CLIENT_ID, 0);
1086 /* Get the client entry */
1087 dest = silc_server_query_client(server, dest_id, FALSE, &resolve);
1089 if (server->server_type != SILC_SERVER || !resolve) {
1090 silc_server_command_send_status_reply(
1091 cmd, SILC_COMMAND_INVITE,
1092 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID, 0);
1096 /* The client info is being resolved. Reprocess this packet after
1097 receiving the reply to the query. */
1098 silc_server_command_pending(server, SILC_COMMAND_WHOIS,
1100 silc_server_command_invite,
1101 silc_server_command_dup(cmd));
1102 cmd->pending = TRUE;
1103 silc_free(channel_id);
1108 /* Check whether the requested client is already on the channel. */
1109 if (silc_server_client_on_channel(dest, channel, NULL)) {
1110 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
1111 SILC_STATUS_ERR_USER_ON_CHANNEL,
1116 /* Get route to the client */
1117 dest_sock = silc_server_get_client_route(server, NULL, 0, dest_id,
1120 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
1121 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID,
1126 memset(invite, 0, sizeof(invite));
1127 silc_strncat(invite, sizeof(invite),
1128 dest->nickname, strlen(dest->nickname));
1129 silc_strncat(invite, sizeof(invite), "!", 1);
1130 silc_strncat(invite, sizeof(invite),
1131 dest->username, strlen(dest->username));
1132 if (!strchr(dest->username, '@')) {
1133 silc_strncat(invite, sizeof(invite), "@", 1);
1134 silc_strncat(invite, sizeof(invite), cmd->sock->hostname,
1135 strlen(cmd->sock->hostname));
1138 len = strlen(invite);
1139 if (!channel->invite_list)
1140 channel->invite_list = silc_calloc(len + 2,
1141 sizeof(*channel->invite_list));
1143 channel->invite_list = silc_realloc(channel->invite_list,
1144 sizeof(*channel->invite_list) *
1146 strlen(channel->invite_list) + 2));
1147 strncat(channel->invite_list, invite, len);
1148 strncat(channel->invite_list, ",", 1);
1150 if (!(dest->mode & SILC_UMODE_BLOCK_INVITE)) {
1151 /* Send notify to the client that is invited to the channel */
1152 idp = silc_id_payload_encode(channel_id, SILC_ID_CHANNEL);
1153 idp2 = silc_id_payload_encode(sender->id, SILC_ID_CLIENT);
1154 silc_server_send_notify_dest(server, dest_sock, FALSE, dest_id,
1156 SILC_NOTIFY_TYPE_INVITE, 3,
1157 idp->data, idp->len,
1158 channel->channel_name,
1159 strlen(channel->channel_name),
1160 idp2->data, idp2->len);
1161 silc_buffer_free(idp);
1162 silc_buffer_free(idp2);
1166 /* Add the client to the invite list of the channel */
1167 add = silc_argument_get_arg_type(cmd->args, 3, &len);
1169 if (!channel->invite_list)
1170 channel->invite_list = silc_calloc(len + 2,
1171 sizeof(*channel->invite_list));
1173 channel->invite_list = silc_realloc(channel->invite_list,
1174 sizeof(*channel->invite_list) *
1176 strlen(channel->invite_list) + 2));
1177 if (add[len - 1] == ',')
1178 add[len - 1] = '\0';
1180 strncat(channel->invite_list, add, len);
1181 strncat(channel->invite_list, ",", 1);
1184 /* Get the invite to be removed and remove it from the list */
1185 del = silc_argument_get_arg_type(cmd->args, 4, &len);
1186 if (del && channel->invite_list) {
1187 char *start, *end, *n;
1189 if (!strncmp(channel->invite_list, del,
1190 strlen(channel->invite_list) - 1)) {
1191 silc_free(channel->invite_list);
1192 channel->invite_list = NULL;
1194 start = strstr(channel->invite_list, del);
1195 if (start && strlen(start) >= len) {
1197 n = silc_calloc(strlen(channel->invite_list) - len, sizeof(*n));
1198 strncat(n, channel->invite_list, start - channel->invite_list);
1199 strncat(n, end + 1, ((channel->invite_list +
1200 strlen(channel->invite_list)) - end) - 1);
1201 silc_free(channel->invite_list);
1202 channel->invite_list = n;
1207 /* Send notify to the primary router */
1208 silc_server_send_notify_invite(server, SILC_PRIMARY_ROUTE(server),
1209 SILC_BROADCAST(server), channel,
1210 sender->id, add, del);
1212 /* Send command reply */
1213 tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
1216 silc_command_reply_payload_encode_va(SILC_COMMAND_INVITE,
1217 SILC_STATUS_OK, 0, ident, 2,
1219 3, channel->invite_list,
1220 channel->invite_list ?
1221 strlen(channel->invite_list) : 0);
1222 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
1223 packet->data, packet->len, FALSE);
1224 silc_buffer_free(packet);
1228 silc_free(channel_id);
1229 silc_server_command_free(cmd);
1233 SilcSocketConnection sock;
1237 /* Quits connection to client. This gets called if client won't
1238 close the connection even when it has issued QUIT command. */
1240 SILC_TASK_CALLBACK(silc_server_command_quit_cb)
1242 SilcServer server = app_context;
1243 QuitInternal q = (QuitInternal)context;
1245 /* Free all client specific data, such as client entry and entires
1246 on channels this client may be on. */
1247 silc_server_free_client_data(server, q->sock, q->sock->user_data,
1249 q->sock->user_data = NULL;
1251 /* Close the connection on our side */
1252 silc_server_close_connection(server, q->sock);
1254 silc_socket_free(q->sock);
1255 silc_free(q->signoff);
1259 /* Quits SILC session. This is the normal way to disconnect client. */
1261 SILC_SERVER_CMD_FUNC(quit)
1263 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
1264 SilcServer server = cmd->server;
1265 SilcSocketConnection sock = cmd->sock;
1267 unsigned char *tmp = NULL;
1270 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_QUIT, cmd, 0, 1);
1272 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
1276 tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
1280 q = silc_calloc(1, sizeof(*q));
1281 q->sock = silc_socket_dup(sock);
1282 q->signoff = tmp ? strdup(tmp) : NULL;
1284 /* We quit the connection with little timeout */
1285 silc_schedule_task_add(server->schedule, sock->sock,
1286 silc_server_command_quit_cb, (void *)q,
1287 0, 200000, SILC_TASK_TIMEOUT, SILC_TASK_PRI_LOW);
1290 silc_server_command_free(cmd);
1293 /* Server side of command KILL. This command is used by router operator
1294 to remove an client from the SILC Network temporarily. */
1296 SILC_SERVER_CMD_FUNC(kill)
1298 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
1299 SilcServer server = cmd->server;
1300 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
1301 SilcClientEntry remote_client;
1302 SilcClientID *client_id;
1303 unsigned char *tmp, *comment;
1304 SilcUInt32 tmp_len, tmp_len2;
1307 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_KILL, cmd, 1, 2);
1309 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT || !client)
1312 /* KILL command works only on router */
1313 if (server->server_type != SILC_ROUTER) {
1314 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
1315 SILC_STATUS_ERR_NO_ROUTER_PRIV, 0);
1319 /* Check whether client has the permissions. */
1320 if (!(client->mode & SILC_UMODE_ROUTER_OPERATOR)) {
1321 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
1322 SILC_STATUS_ERR_NO_ROUTER_PRIV, 0);
1326 /* Get the client ID */
1327 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
1329 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
1330 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
1334 client_id = silc_id_payload_parse_id(tmp, tmp_len, NULL);
1336 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
1337 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID,
1342 /* Get the client entry */
1343 remote_client = silc_idlist_find_client_by_id(server->local_list,
1344 client_id, TRUE, NULL);
1346 if (!remote_client) {
1347 remote_client = silc_idlist_find_client_by_id(server->global_list,
1348 client_id, TRUE, NULL);
1350 if (!remote_client) {
1351 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
1352 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID,
1359 comment = silc_argument_get_arg_type(cmd->args, 2, &tmp_len2);
1363 /* Send reply to the sender */
1364 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
1367 /* Check if anyone is watching this nickname */
1368 if (server->server_type == SILC_ROUTER)
1369 silc_server_check_watcher_list(server, client, NULL,
1370 SILC_NOTIFY_TYPE_KILLED);
1372 /* Now do the killing */
1373 silc_server_kill_client(server, remote_client, comment, client->id,
1377 silc_server_command_free(cmd);
1380 /* Server side of command INFO. This sends information about us to
1381 the client. If client requested specific server we will send the
1382 command to that server. */
1384 SILC_SERVER_CMD_FUNC(info)
1386 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
1387 SilcServer server = cmd->server;
1388 SilcBuffer packet, idp;
1391 char *dest_server, *server_info = NULL, *server_name;
1392 SilcUInt16 ident = silc_command_get_ident(cmd->payload);
1393 SilcServerEntry entry = NULL;
1394 SilcServerID *server_id = NULL;
1396 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_INFO, cmd, 0, 2);
1398 /* Get server name */
1399 dest_server = silc_argument_get_arg_type(cmd->args, 1, NULL);
1402 tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
1404 server_id = silc_id_payload_parse_id(tmp, tmp_len, NULL);
1406 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INFO,
1407 SILC_STATUS_ERR_NO_SERVER_ID, 0);
1413 /* Check whether we have this server cached */
1414 entry = silc_idlist_find_server_by_id(server->local_list,
1415 server_id, TRUE, NULL);
1417 entry = silc_idlist_find_server_by_id(server->global_list,
1418 server_id, TRUE, NULL);
1419 if (!entry && server->server_type != SILC_SERVER) {
1420 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INFO,
1421 SILC_STATUS_ERR_NO_SUCH_SERVER,
1428 /* Some buggy servers has sent request to router about themselves. */
1429 if (server->server_type != SILC_SERVER && cmd->sock->user_data == entry)
1432 if ((!dest_server && !server_id && !entry) || (entry &&
1433 entry == server->id_entry) ||
1434 (dest_server && !cmd->pending &&
1435 !strncasecmp(dest_server, server->server_name, strlen(dest_server)))) {
1436 /* Send our reply */
1437 char info_string[256];
1439 memset(info_string, 0, sizeof(info_string));
1440 snprintf(info_string, sizeof(info_string),
1441 "location: %s server: %s admin: %s <%s>",
1442 server->config->server_info->location,
1443 server->config->server_info->server_type,
1444 server->config->server_info->admin,
1445 server->config->server_info->email);
1447 server_info = info_string;
1448 entry = server->id_entry;
1450 /* Check whether we have this server cached */
1451 if (!entry && dest_server) {
1452 entry = silc_idlist_find_server_by_name(server->global_list,
1453 dest_server, TRUE, NULL);
1455 entry = silc_idlist_find_server_by_name(server->local_list,
1456 dest_server, TRUE, NULL);
1460 if (!cmd->pending &&
1461 server->server_type != SILC_SERVER && entry && !entry->server_info) {
1462 /* Send to the server */
1464 SilcUInt16 old_ident;
1466 old_ident = silc_command_get_ident(cmd->payload);
1467 silc_command_set_ident(cmd->payload, ++server->cmd_ident);
1468 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
1470 silc_server_packet_send(server, entry->connection,
1471 SILC_PACKET_COMMAND, cmd->packet->flags,
1472 tmpbuf->data, tmpbuf->len, TRUE);
1474 /* Reprocess this packet after received reply from router */
1475 silc_server_command_pending(server, SILC_COMMAND_INFO,
1476 silc_command_get_ident(cmd->payload),
1477 silc_server_command_info,
1478 silc_server_command_dup(cmd));
1479 cmd->pending = TRUE;
1480 silc_command_set_ident(cmd->payload, old_ident);
1481 silc_buffer_free(tmpbuf);
1485 if (!entry && !cmd->pending && !server->standalone) {
1486 /* Send to the primary router */
1488 SilcUInt16 old_ident;
1490 old_ident = silc_command_get_ident(cmd->payload);
1491 silc_command_set_ident(cmd->payload, ++server->cmd_ident);
1492 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
1494 silc_server_packet_send(server, SILC_PRIMARY_ROUTE(server),
1495 SILC_PACKET_COMMAND, cmd->packet->flags,
1496 tmpbuf->data, tmpbuf->len, TRUE);
1498 /* Reprocess this packet after received reply from router */
1499 silc_server_command_pending(server, SILC_COMMAND_INFO,
1500 silc_command_get_ident(cmd->payload),
1501 silc_server_command_info,
1502 silc_server_command_dup(cmd));
1503 cmd->pending = TRUE;
1504 silc_command_set_ident(cmd->payload, old_ident);
1505 silc_buffer_free(tmpbuf);
1510 silc_free(server_id);
1513 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INFO,
1514 SILC_STATUS_ERR_NO_SUCH_SERVER, 0);
1518 idp = silc_id_payload_encode(entry->id, SILC_ID_SERVER);
1520 server_info = entry->server_info;
1521 server_name = entry->server_name;
1523 /* Send the reply */
1524 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_INFO,
1525 SILC_STATUS_OK, 0, ident, 3,
1526 2, idp->data, idp->len,
1528 strlen(server_name),
1531 strlen(server_info) : 0);
1532 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
1533 packet->data, packet->len, FALSE);
1535 silc_buffer_free(packet);
1536 silc_buffer_free(idp);
1539 silc_server_command_free(cmd);
1542 /* Server side of command PING. This just replies to the ping. */
1544 SILC_SERVER_CMD_FUNC(ping)
1546 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
1547 SilcServer server = cmd->server;
1552 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_INFO, cmd, 1, 2);
1555 tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
1557 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PING,
1558 SILC_STATUS_ERR_NO_SERVER_ID, 0);
1561 id = silc_id_str2id(tmp, len, SILC_ID_SERVER);
1565 if (SILC_ID_SERVER_COMPARE(id, server->id)) {
1566 /* Send our reply */
1567 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PING,
1570 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PING,
1571 SILC_STATUS_ERR_NO_SUCH_SERVER, 0);
1578 silc_server_command_free(cmd);
1581 /* Server side of command STATS. */
1583 SILC_SERVER_CMD_FUNC(stats)
1585 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
1586 SilcServer server = cmd->server;
1587 SilcServerID *server_id;
1590 SilcBuffer packet, stats;
1591 SilcUInt16 ident = silc_command_get_ident(cmd->payload);
1594 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_STATS, cmd, 1, 1);
1597 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
1599 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INFO,
1600 SILC_STATUS_ERR_NO_SERVER_ID, 0);
1603 server_id = silc_id_payload_parse_id(tmp, tmp_len, NULL);
1607 /* The ID must be ours */
1608 if (!SILC_ID_SERVER_COMPARE(server->id, server_id)) {
1609 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INFO,
1610 SILC_STATUS_ERR_NO_SUCH_SERVER, 0);
1611 silc_free(server_id);
1614 silc_free(server_id);
1616 /* If we are router then just send everything we got. If we are normal
1617 server then we'll send this to our router to get all the latest
1618 statistical information. */
1619 if (!cmd->pending && server->server_type != SILC_ROUTER &&
1620 !server->standalone) {
1621 /* Send request to our router */
1622 SilcBuffer idp = silc_id_payload_encode(server->router->id,
1624 packet = silc_command_payload_encode_va(SILC_COMMAND_STATS,
1625 ++server->cmd_ident, 1,
1626 1, idp->data, idp->len);
1627 silc_server_packet_send(server, SILC_PRIMARY_ROUTE(server),
1628 SILC_PACKET_COMMAND, 0, packet->data,
1629 packet->len, FALSE);
1631 /* Reprocess this packet after received reply from router */
1632 silc_server_command_pending(server, SILC_COMMAND_STATS,
1634 silc_server_command_stats,
1635 silc_server_command_dup(cmd));
1636 cmd->pending = TRUE;
1637 silc_buffer_free(packet);
1638 silc_buffer_free(idp);
1642 /* Send our reply to sender */
1643 uptime = time(NULL) - server->starttime;
1645 stats = silc_buffer_alloc_size(60);
1646 silc_buffer_format(stats,
1647 SILC_STR_UI_INT(server->starttime),
1648 SILC_STR_UI_INT(uptime),
1649 SILC_STR_UI_INT(server->stat.my_clients),
1650 SILC_STR_UI_INT(server->stat.my_channels),
1651 SILC_STR_UI_INT(server->stat.my_server_ops),
1652 SILC_STR_UI_INT(server->stat.my_router_ops),
1653 SILC_STR_UI_INT(server->stat.cell_clients),
1654 SILC_STR_UI_INT(server->stat.cell_channels),
1655 SILC_STR_UI_INT(server->stat.cell_servers),
1656 SILC_STR_UI_INT(server->stat.clients),
1657 SILC_STR_UI_INT(server->stat.channels),
1658 SILC_STR_UI_INT(server->stat.servers),
1659 SILC_STR_UI_INT(server->stat.routers),
1660 SILC_STR_UI_INT(server->stat.server_ops),
1661 SILC_STR_UI_INT(server->stat.router_ops),
1664 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_STATS,
1665 SILC_STATUS_OK, 0, ident, 2,
1667 3, stats->data, stats->len);
1668 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY,
1669 0, packet->data, packet->len, FALSE);
1670 silc_buffer_free(packet);
1671 silc_buffer_free(stats);
1674 silc_server_command_free(cmd);
1677 /* Internal routine to join channel. The channel sent to this function
1678 has been either created or resolved from ID lists. This joins the sent
1679 client to the channel. */
1681 static void silc_server_command_join_channel(SilcServer server,
1682 SilcServerCommandContext cmd,
1683 SilcChannelEntry channel,
1684 SilcClientID *client_id,
1688 const unsigned char *auth,
1689 SilcUInt32 auth_len)
1691 SilcSocketConnection sock = cmd->sock;
1693 SilcUInt32 tmp_len, user_count;
1694 unsigned char *passphrase = NULL, mode[4], tmp2[4], tmp3[4];
1695 SilcClientEntry client;
1696 SilcChannelClientEntry chl;
1697 SilcBuffer reply, chidp, clidp, keyp = NULL, user_list, mode_list;
1698 SilcUInt16 ident = silc_command_get_ident(cmd->payload);
1699 char check[512], check2[512];
1700 bool founder = FALSE;
1702 unsigned char *fkey = NULL;
1703 SilcUInt32 fkey_len = 0;
1706 SILC_LOG_DEBUG(("Joining client to channel"));
1711 /* Get the client entry */
1712 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT) {
1713 client = (SilcClientEntry)sock->user_data;
1717 client = silc_server_query_client(server, client_id, FALSE,
1724 silc_server_command_send_status_reply(
1725 cmd, SILC_COMMAND_JOIN,
1726 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS, 0);
1730 /* The client info is being resolved. Reprocess this packet after
1731 receiving the reply to the query. */
1732 silc_server_command_pending(server, SILC_COMMAND_WHOIS,
1734 silc_server_command_join,
1735 silc_server_command_dup(cmd));
1736 cmd->pending = TRUE;
1740 cmd->pending = FALSE;
1744 * Check founder auth payload if provided. If client can gain founder
1745 * privileges it can override various conditions on joining the channel,
1746 * and can have directly the founder mode set on the channel.
1748 if (auth && auth_len && channel->mode & SILC_CHANNEL_MODE_FOUNDER_AUTH) {
1749 SilcIDListData idata = (SilcIDListData)client;
1750 SilcChannelClientEntry chl2;
1751 SilcHashTableList htl;
1753 if (channel->founder_key && idata->public_key &&
1754 silc_pkcs_public_key_compare(channel->founder_key,
1755 idata->public_key)) {
1756 /* Check whether the client is to become founder */
1757 if (silc_auth_verify_data(auth, auth_len, SILC_AUTH_PUBLIC_KEY,
1758 channel->founder_key, 0, server->sha1hash,
1759 client->id, SILC_ID_CLIENT)) {
1761 /* There cannot be anyone else as founder on the channel now. This
1762 client is definitely the founder due to this authentication */
1763 silc_hash_table_list(channel->user_list, &htl);
1764 while (silc_hash_table_get(&htl, NULL, (void *)&chl2))
1765 if (chl2->mode & SILC_CHANNEL_UMODE_CHANFO) {
1766 chl2->mode &= ~SILC_CHANNEL_UMODE_CHANFO;
1767 silc_server_force_cumode_change(server, NULL, channel, chl2,
1771 silc_hash_table_list_reset(&htl);
1773 umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
1780 * Check channel modes
1784 memset(check, 0, sizeof(check));
1785 memset(check2, 0, sizeof(check2));
1786 silc_strncat(check, sizeof(check),
1787 client->nickname, strlen(client->nickname));
1788 silc_strncat(check, sizeof(check), "!", 1);
1789 silc_strncat(check, sizeof(check),
1790 client->username, strlen(client->username));
1791 if (!strchr(client->username, '@')) {
1792 silc_strncat(check, sizeof(check), "@", 1);
1793 silc_strncat(check, sizeof(check),
1794 cmd->sock->hostname, strlen(cmd->sock->hostname));
1797 silc_strncat(check2, sizeof(check2),
1798 client->nickname, strlen(client->nickname));
1799 if (!strchr(client->nickname, '@')) {
1800 silc_strncat(check2, sizeof(check2), "@", 1);
1801 silc_strncat(check2, sizeof(check2),
1802 server->server_name, strlen(server->server_name));
1804 silc_strncat(check2, sizeof(check2), "!", 1);
1805 silc_strncat(check2, sizeof(check2),
1806 client->username, strlen(client->username));
1807 if (!strchr(client->username, '@')) {
1808 silc_strncat(check2, sizeof(check2), "@", 1);
1809 silc_strncat(check2, sizeof(check2),
1810 cmd->sock->hostname, strlen(cmd->sock->hostname));
1813 /* Check invite list if channel is invite-only channel */
1814 if (channel->mode & SILC_CHANNEL_MODE_INVITE) {
1815 if (!channel->invite_list ||
1816 (!silc_string_match(channel->invite_list, check) &&
1817 !silc_string_match(channel->invite_list, check2))) {
1818 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
1819 SILC_STATUS_ERR_NOT_INVITED, 0);
1824 /* Check ban list if it exists. If the client's nickname, server,
1825 username and/or hostname is in the ban list the access to the
1826 channel is denied. */
1827 if (channel->ban_list) {
1828 if (silc_string_match(channel->ban_list, check) ||
1829 silc_string_match(channel->ban_list, check2)) {
1830 silc_server_command_send_status_reply(
1831 cmd, SILC_COMMAND_JOIN,
1832 SILC_STATUS_ERR_BANNED_FROM_CHANNEL, 0);
1837 /* Check user count limit if set. */
1838 if (channel->mode & SILC_CHANNEL_MODE_ULIMIT) {
1839 if (silc_hash_table_count(channel->user_list) + 1 >
1840 channel->user_limit) {
1841 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
1842 SILC_STATUS_ERR_CHANNEL_IS_FULL,
1849 /* Check the channel passphrase if set. */
1850 if (channel->mode & SILC_CHANNEL_MODE_PASSPHRASE) {
1851 /* Get passphrase */
1852 tmp = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
1854 passphrase = silc_memdup(tmp, tmp_len);
1856 if (!passphrase || !channel->passphrase ||
1857 memcmp(passphrase, channel->passphrase, strlen(channel->passphrase))) {
1858 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
1859 SILC_STATUS_ERR_BAD_PASSWORD, 0);
1865 * Client is allowed to join to the channel. Make it happen.
1868 /* Check whether the client already is on the channel */
1869 if (silc_server_client_on_channel(client, channel, NULL)) {
1870 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
1871 SILC_STATUS_ERR_USER_ON_CHANNEL, 0);
1875 /* Generate new channel key as protocol dictates */
1877 if (!silc_server_create_channel_key(server, channel, 0))
1880 /* Send the channel key. This is broadcasted to the channel but is not
1881 sent to the client who is joining to the channel. */
1882 if (!(channel->mode & SILC_CHANNEL_MODE_PRIVKEY))
1883 silc_server_send_channel_key(server, NULL, channel,
1884 server->server_type == SILC_ROUTER ?
1885 FALSE : !server->standalone);
1888 /* Join the client to the channel by adding it to channel's user list.
1889 Add also the channel to client entry's channels list for fast cross-
1891 chl = silc_calloc(1, sizeof(*chl));
1893 chl->client = client;
1894 chl->channel = channel;
1895 silc_hash_table_add(channel->user_list, client, chl);
1896 silc_hash_table_add(client->channels, channel, chl);
1897 channel->user_count++;
1898 channel->disabled = FALSE;
1900 /* Get users on the channel */
1901 silc_server_get_users_on_channel(server, channel, &user_list, &mode_list,
1904 /* Encode Client ID Payload of the original client who wants to join */
1905 clidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
1907 /* Encode command reply packet */
1908 chidp = silc_id_payload_encode(channel->id, SILC_ID_CHANNEL);
1909 SILC_PUT32_MSB(channel->mode, mode);
1910 SILC_PUT32_MSB(created, tmp2);
1911 SILC_PUT32_MSB(user_count, tmp3);
1913 if (!(channel->mode & SILC_CHANNEL_MODE_PRIVKEY)) {
1914 tmp = silc_id_id2str(channel->id, SILC_ID_CHANNEL);
1915 cipher = silc_cipher_get_name(channel->channel_key);
1916 keyp = silc_channel_key_payload_encode(silc_id_get_len(channel->id,
1919 strlen(cipher), cipher,
1920 channel->key_len / 8, channel->key);
1924 if (channel->founder_key)
1925 fkey = silc_pkcs_public_key_encode(channel->founder_key, &fkey_len);
1928 silc_command_reply_payload_encode_va(SILC_COMMAND_JOIN,
1929 SILC_STATUS_OK, 0, ident, 14,
1930 2, channel->channel_name,
1931 strlen(channel->channel_name),
1932 3, chidp->data, chidp->len,
1933 4, clidp->data, clidp->len,
1936 7, keyp ? keyp->data : NULL,
1937 keyp ? keyp->len : 0,
1938 8, channel->ban_list,
1940 strlen(channel->ban_list) : 0,
1941 9, channel->invite_list,
1942 channel->invite_list ?
1943 strlen(channel->invite_list) : 0,
1946 strlen(channel->topic) : 0,
1947 11, silc_hmac_get_name(channel->hmac),
1948 strlen(silc_hmac_get_name(channel->
1951 13, user_list->data, user_list->len,
1952 14, mode_list->data,
1954 15, fkey, fkey_len);
1956 /* Send command reply */
1957 silc_server_packet_send(server, sock, SILC_PACKET_COMMAND_REPLY, 0,
1958 reply->data, reply->len, FALSE);
1960 /* Send JOIN notify to locally connected clients on the channel. If
1961 we are normal server then router will send or have sent JOIN notify
1962 already. However since we've added the client already to our channel
1963 we'll ignore it (in packet_receive.c) so we must send it here. If
1964 we are router then this will send it to local clients and local
1966 SILC_LOG_DEBUG(("Send JOIN notify to channel"));
1967 silc_server_send_notify_to_channel(server, NULL, channel, FALSE,
1968 SILC_NOTIFY_TYPE_JOIN, 2,
1969 clidp->data, clidp->len,
1970 chidp->data, chidp->len);
1972 /* Update statistics */
1973 server->stat.my_chanclients++;
1974 if (server->server_type == SILC_ROUTER) {
1975 server->stat.cell_chanclients++;
1976 server->stat.chanclients++;
1979 if (!cmd->pending) {
1980 /* Send JOIN notify packet to our primary router */
1981 silc_server_send_notify_join(server, SILC_PRIMARY_ROUTE(server),
1982 SILC_BROADCAST(server), channel, client->id);
1985 /* Distribute the channel key to all backup routers. */
1986 silc_server_backup_send(server, NULL, SILC_PACKET_CHANNEL_KEY, 0,
1987 keyp->data, keyp->len, FALSE, TRUE);
1989 /* If client became founder by providing correct founder auth data
1990 notify the mode change to the channel. */
1992 SILC_PUT32_MSB(chl->mode, mode);
1993 SILC_LOG_DEBUG(("Send CUMODE_CHANGE notify to channel"));
1994 silc_server_send_notify_to_channel(server, NULL, channel, FALSE,
1995 SILC_NOTIFY_TYPE_CUMODE_CHANGE, 4,
1996 clidp->data, clidp->len,
1997 mode, 4, clidp->data, clidp->len,
2002 /* Set CUMODE notify type to network */
2004 silc_server_send_notify_cumode(server, SILC_PRIMARY_ROUTE(server),
2005 SILC_BROADCAST(server), channel,
2006 chl->mode, client->id, SILC_ID_CLIENT,
2007 client->id, channel->founder_key);
2009 silc_buffer_free(reply);
2010 silc_buffer_free(clidp);
2011 silc_buffer_free(chidp);
2012 silc_buffer_free(keyp);
2013 silc_buffer_free(user_list);
2014 silc_buffer_free(mode_list);
2018 silc_free(passphrase);
2021 /* Server side of command JOIN. Joins client into requested channel. If
2022 the channel does not exist it will be created. */
2024 SILC_SERVER_CMD_FUNC(join)
2026 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2027 SilcServer server = cmd->server;
2028 unsigned char *auth;
2029 SilcUInt32 tmp_len, auth_len;
2030 char *tmp, *channel_name = NULL, *cipher, *hmac;
2031 SilcChannelEntry channel;
2032 SilcUInt32 umode = 0;
2033 bool created = FALSE, create_key = TRUE;
2034 SilcClientID *client_id;
2036 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_JOIN, cmd, 2, 6);
2038 /* Get channel name */
2039 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
2041 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2042 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
2049 channel_name[255] = '\0';
2051 if (silc_server_name_bad_chars(channel_name, tmp_len) == TRUE) {
2052 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2053 SILC_STATUS_ERR_BAD_CHANNEL, 0);
2057 /* Get Client ID of the client who is joining to the channel */
2058 tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
2060 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2061 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
2065 client_id = silc_id_payload_parse_id(tmp, tmp_len, NULL);
2067 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2068 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
2073 /* Get cipher, hmac name and auth payload */
2074 cipher = silc_argument_get_arg_type(cmd->args, 4, NULL);
2075 hmac = silc_argument_get_arg_type(cmd->args, 5, NULL);
2076 auth = silc_argument_get_arg_type(cmd->args, 6, &auth_len);
2078 /* See if the channel exists */
2079 channel = silc_idlist_find_channel_by_name(server->local_list,
2080 channel_name, NULL);
2082 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT) {
2083 SilcClientEntry entry = (SilcClientEntry)cmd->sock->user_data;
2085 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2086 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
2091 silc_free(client_id);
2092 client_id = silc_id_dup(entry->id, SILC_ID_CLIENT);
2095 (channel->disabled && server->server_type != SILC_ROUTER)) {
2096 /* Channel not found or not valid */
2098 /* If we are standalone server we don't have a router, we just create
2099 the channel by ourselves (unless it existed). */
2100 if (server->standalone) {
2102 channel = silc_server_create_new_channel(server, server->id, cipher,
2103 hmac, channel_name, TRUE);
2105 silc_server_command_send_status_reply(
2106 cmd, SILC_COMMAND_JOIN,
2107 SILC_STATUS_ERR_UNKNOWN_ALGORITHM,
2109 silc_free(client_id);
2113 umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
2119 /* The channel does not exist on our server. If we are normal server
2120 we will send JOIN command to our router which will handle the
2121 joining procedure (either creates the channel if it doesn't exist
2122 or joins the client to it). */
2123 if (server->server_type != SILC_ROUTER) {
2125 SilcUInt16 old_ident;
2127 /* If this is pending command callback then we've resolved
2128 it and it didn't work, return since we've notified the
2129 client already in the command reply callback. */
2131 silc_free(client_id);
2135 old_ident = silc_command_get_ident(cmd->payload);
2136 silc_command_set_ident(cmd->payload, ++server->cmd_ident);
2137 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
2139 /* Send JOIN command to our router */
2140 silc_server_packet_send(server, (SilcSocketConnection)
2141 SILC_PRIMARY_ROUTE(server),
2142 SILC_PACKET_COMMAND, cmd->packet->flags,
2143 tmpbuf->data, tmpbuf->len, TRUE);
2145 /* Reprocess this packet after received reply from router */
2146 silc_server_command_pending(server, SILC_COMMAND_JOIN,
2147 silc_command_get_ident(cmd->payload),
2148 silc_server_command_join,
2149 silc_server_command_dup(cmd));
2150 cmd->pending = TRUE;
2151 silc_command_set_ident(cmd->payload, old_ident);
2152 silc_buffer_free(tmpbuf);
2153 silc_free(client_id);
2157 /* We are router and the channel does not seem exist so we will check
2158 our global list as well for the channel. */
2159 channel = silc_idlist_find_channel_by_name(server->global_list,
2160 channel_name, NULL);
2162 /* Channel really does not exist, create it */
2163 channel = silc_server_create_new_channel(server, server->id, cipher,
2164 hmac, channel_name, TRUE);
2166 silc_server_command_send_status_reply(
2167 cmd, SILC_COMMAND_JOIN,
2168 SILC_STATUS_ERR_UNKNOWN_ALGORITHM, 0);
2169 silc_free(client_id);
2173 umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
2181 /* Channel not found */
2183 /* If the command came from router and we are normal server then
2184 something went wrong with the joining as the channel was not found.
2185 We can't do anything else but ignore this. */
2186 if (cmd->sock->type == SILC_SOCKET_TYPE_ROUTER ||
2187 server->server_type != SILC_ROUTER) {
2188 silc_free(client_id);
2192 /* We are router and the channel does not seem exist so we will check
2193 our global list as well for the channel. */
2194 channel = silc_idlist_find_channel_by_name(server->global_list,
2195 channel_name, NULL);
2197 /* Channel really does not exist, create it */
2198 channel = silc_server_create_new_channel(server, server->id, cipher,
2199 hmac, channel_name, TRUE);
2201 silc_server_command_send_status_reply(
2202 cmd, SILC_COMMAND_JOIN,
2203 SILC_STATUS_ERR_UNKNOWN_ALGORITHM, 0);
2204 silc_free(client_id);
2208 umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
2215 /* Check whether the channel was created by our router */
2216 if (cmd->pending && context2) {
2217 SilcServerCommandReplyContext reply = context2;
2219 if (silc_command_get(reply->payload) == SILC_COMMAND_JOIN) {
2220 tmp = silc_argument_get_arg_type(reply->args, 6, NULL);
2221 SILC_GET32_MSB(created, tmp);
2222 if (silc_argument_get_arg_type(reply->args, 7, NULL))
2223 create_key = FALSE; /* Router returned the key already */
2225 if (silc_command_get_status(reply->payload, NULL, NULL) &&
2226 channel->mode & SILC_CHANNEL_MODE_PASSPHRASE) {
2227 /* Save channel passphrase, if user provided it successfully */
2230 pa = silc_argument_get_arg_type(cmd->args, 3, &pa_len);
2232 silc_free(channel->passphrase);
2233 channel->passphrase = silc_memdup(pa, pa_len);
2238 if (silc_command_get(reply->payload) == SILC_COMMAND_WHOIS &&
2239 !channel->disabled && !silc_hash_table_count(channel->user_list))
2243 /* If the channel does not have global users and is also empty the client
2244 will be the channel founder and operator. */
2245 if (!channel->disabled &&
2246 !channel->global_users && !silc_hash_table_count(channel->user_list))
2247 umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
2249 /* Join to the channel */
2250 silc_server_command_join_channel(server, cmd, channel, client_id,
2251 created, create_key, umode,
2254 silc_free(client_id);
2257 silc_server_command_free(cmd);
2260 /* Server side of command MOTD. Sends server's current "message of the
2261 day" to the client. */
2263 SILC_SERVER_CMD_FUNC(motd)
2265 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2266 SilcServer server = cmd->server;
2267 SilcBuffer packet, idp;
2268 char *motd, *dest_server;
2269 SilcUInt32 motd_len;
2270 SilcUInt16 ident = silc_command_get_ident(cmd->payload);
2272 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_MOTD, cmd, 1, 1);
2274 /* Get server name */
2275 dest_server = silc_argument_get_arg_type(cmd->args, 1, NULL);
2277 silc_server_command_send_status_reply(cmd, SILC_COMMAND_MOTD,
2278 SILC_STATUS_ERR_NO_SUCH_SERVER, 0);
2282 if (!strncasecmp(dest_server, server->server_name, strlen(dest_server))) {
2285 idp = silc_id_payload_encode(server->id_entry->id, SILC_ID_SERVER);
2287 if (server->config && server->config->server_info &&
2288 server->config->server_info->motd_file) {
2290 motd = silc_file_readfile(server->config->server_info->motd_file,
2296 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_MOTD,
2303 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_MOTD,
2309 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
2310 packet->data, packet->len, FALSE);
2311 silc_buffer_free(packet);
2312 silc_buffer_free(idp);
2314 SilcServerEntry entry;
2316 /* Check whether we have this server cached */
2317 entry = silc_idlist_find_server_by_name(server->global_list,
2318 dest_server, TRUE, NULL);
2320 entry = silc_idlist_find_server_by_name(server->local_list,
2321 dest_server, TRUE, NULL);
2324 if (server->server_type != SILC_SERVER && !cmd->pending &&
2325 entry && !entry->motd) {
2326 /* Send to the server */
2328 SilcUInt16 old_ident;
2330 old_ident = silc_command_get_ident(cmd->payload);
2331 silc_command_set_ident(cmd->payload, ++server->cmd_ident);
2332 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
2334 silc_server_packet_send(server, entry->connection,
2335 SILC_PACKET_COMMAND, cmd->packet->flags,
2336 tmpbuf->data, tmpbuf->len, TRUE);
2338 /* Reprocess this packet after received reply from router */
2339 silc_server_command_pending(server, SILC_COMMAND_MOTD,
2340 silc_command_get_ident(cmd->payload),
2341 silc_server_command_motd,
2342 silc_server_command_dup(cmd));
2343 cmd->pending = TRUE;
2344 silc_command_set_ident(cmd->payload, old_ident);
2345 silc_buffer_free(tmpbuf);
2349 if (!entry && !cmd->pending && !server->standalone) {
2350 /* Send to the primary router */
2352 SilcUInt16 old_ident;
2354 old_ident = silc_command_get_ident(cmd->payload);
2355 silc_command_set_ident(cmd->payload, ++server->cmd_ident);
2356 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
2358 silc_server_packet_send(server, SILC_PRIMARY_ROUTE(server),
2359 SILC_PACKET_COMMAND, cmd->packet->flags,
2360 tmpbuf->data, tmpbuf->len, TRUE);
2362 /* Reprocess this packet after received reply from router */
2363 silc_server_command_pending(server, SILC_COMMAND_MOTD,
2364 silc_command_get_ident(cmd->payload),
2365 silc_server_command_motd,
2366 silc_server_command_dup(cmd));
2367 cmd->pending = TRUE;
2368 silc_command_set_ident(cmd->payload, old_ident);
2369 silc_buffer_free(tmpbuf);
2374 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INFO,
2375 SILC_STATUS_ERR_NO_SUCH_SERVER, 0);
2379 idp = silc_id_payload_encode(server->id_entry->id, SILC_ID_SERVER);
2380 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_MOTD,
2381 SILC_STATUS_OK, 0, ident, 2,
2385 strlen(entry->motd) : 0);
2386 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
2387 packet->data, packet->len, FALSE);
2388 silc_buffer_free(packet);
2389 silc_buffer_free(idp);
2393 silc_server_command_free(cmd);
2396 /* Server side of command UMODE. Client can use this command to set/unset
2397 user mode. Client actually cannot set itself to be as server/router
2398 operator so this can be used only to unset the modes. */
2400 SILC_SERVER_CMD_FUNC(umode)
2402 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2403 SilcServer server = cmd->server;
2404 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
2406 unsigned char *tmp_mask, m[4];
2407 SilcUInt32 mask = 0;
2408 SilcUInt16 ident = silc_command_get_ident(cmd->payload);
2409 bool set_mask = FALSE;
2411 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT || !client)
2414 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_UMODE, cmd, 1, 2);
2416 /* Get the client's mode mask */
2417 tmp_mask = silc_argument_get_arg_type(cmd->args, 2, NULL);
2419 SILC_GET32_MSB(mask, tmp_mask);
2424 /* Check that mode changing is allowed. */
2425 if (!silc_server_check_umode_rights(server, client, mask)) {
2426 silc_server_command_send_status_reply(cmd, SILC_COMMAND_UMODE,
2427 SILC_STATUS_ERR_PERM_DENIED, 0);
2431 /* Anonymous mode cannot be set by client */
2432 if (mask & SILC_UMODE_ANONYMOUS) {
2433 if (!(client->mode & SILC_UMODE_ANONYMOUS)) {
2434 silc_server_command_send_status_reply(cmd, SILC_COMMAND_UMODE,
2435 SILC_STATUS_ERR_PERM_DENIED, 0);
2439 if (client->mode & SILC_UMODE_ANONYMOUS) {
2440 silc_server_command_send_status_reply(cmd, SILC_COMMAND_UMODE,
2441 SILC_STATUS_ERR_PERM_DENIED, 0);
2446 /* Update statistics */
2447 if (mask & SILC_UMODE_GONE) {
2448 if (!(client->mode & SILC_UMODE_GONE))
2449 server->stat.my_aways++;
2451 if (client->mode & SILC_UMODE_GONE)
2452 server->stat.my_aways--;
2455 /* Change the mode */
2456 client->mode = mask;
2458 /* Send UMODE change to primary router */
2459 silc_server_send_notify_umode(server, SILC_PRIMARY_ROUTE(server),
2460 SILC_BROADCAST(server), client->id,
2463 /* Check if anyone is watching this nickname */
2464 if (server->server_type == SILC_ROUTER)
2465 silc_server_check_watcher_list(server, client, NULL,
2466 SILC_NOTIFY_TYPE_UMODE_CHANGE);
2469 /* Send command reply to sender */
2470 SILC_PUT32_MSB(client->mode, m);
2471 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_UMODE,
2472 SILC_STATUS_OK, 0, ident, 1,
2474 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
2475 packet->data, packet->len, FALSE);
2476 silc_buffer_free(packet);
2479 silc_server_command_free(cmd);
2482 /* Server side command of CMODE. Changes channel mode */
2484 SILC_SERVER_CMD_FUNC(cmode)
2486 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2487 SilcServer server = cmd->server;
2488 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
2489 SilcIDListData idata = (SilcIDListData)client;
2490 SilcChannelID *channel_id = NULL;
2491 SilcChannelEntry channel;
2492 SilcChannelClientEntry chl;
2493 SilcBuffer packet, cidp;
2494 unsigned char *tmp, *tmp_id, *tmp_mask;
2495 char *cipher = NULL, *hmac = NULL, *passphrase = NULL;
2496 SilcUInt32 mode_mask = 0, old_mask = 0, tmp_len, tmp_len2;
2497 SilcUInt16 ident = silc_command_get_ident(cmd->payload);
2498 bool set_mask = FALSE;
2499 SilcPublicKey founder_key = NULL;
2500 unsigned char *fkey = NULL;
2501 SilcUInt32 fkey_len = 0;
2504 silc_server_command_free(cmd);
2508 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_CMODE, cmd, 1, 7);
2510 /* Get Channel ID */
2511 tmp_id = silc_argument_get_arg_type(cmd->args, 1, &tmp_len2);
2513 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2514 SILC_STATUS_ERR_NO_CHANNEL_ID, 0);
2515 silc_server_command_free(cmd);
2518 channel_id = silc_id_payload_parse_id(tmp_id, tmp_len2, NULL);
2520 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2521 SILC_STATUS_ERR_NO_CHANNEL_ID, 0);
2522 silc_server_command_free(cmd);
2526 /* Get channel entry */
2527 channel = silc_idlist_find_channel_by_id(server->local_list,
2530 channel = silc_idlist_find_channel_by_id(server->global_list,
2533 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2534 SILC_STATUS_ERR_NO_SUCH_CHANNEL,
2536 silc_free(channel_id);
2537 silc_server_command_free(cmd);
2541 old_mask = channel->mode;
2543 /* Get the channel mode mask */
2544 tmp_mask = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
2546 SILC_GET32_MSB(mode_mask, tmp_mask);
2550 /* Check whether this client is on the channel */
2551 if (!silc_server_client_on_channel(client, channel, &chl)) {
2552 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2553 SILC_STATUS_ERR_NOT_ON_CHANNEL, 0);
2557 /* Check that client has rights to change any requested channel modes */
2558 if (set_mask && !silc_server_check_cmode_rights(server, channel, chl,
2560 SILC_LOG_DEBUG(("Client does not have rights to change mode"));
2561 silc_server_command_send_status_reply(
2562 cmd, SILC_COMMAND_CMODE,
2563 (!(chl->mode & SILC_CHANNEL_UMODE_CHANOP) ?
2564 SILC_STATUS_ERR_NO_CHANNEL_PRIV :
2565 SILC_STATUS_ERR_NO_CHANNEL_FOPRIV), 0);
2569 /* If mode mask was not sent as argument then merely return the current
2570 mode mask to the sender. */
2573 SILC_PUT32_MSB(channel->mode, m);
2574 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_CMODE,
2575 SILC_STATUS_OK, 0, ident, 2,
2576 2, tmp_id, tmp_len2,
2578 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
2579 packet->data, packet->len, FALSE);
2580 silc_buffer_free(packet);
2585 * Check the modes. Modes that requires nothing special operation are
2589 if (mode_mask & SILC_CHANNEL_MODE_PRIVKEY) {
2590 /* Channel uses private keys to protect traffic. Client(s) has set the
2591 key locally they want to use, server does not know that key. */
2592 /* Nothing interesting to do here */
2594 if (channel->mode & SILC_CHANNEL_MODE_PRIVKEY) {
2595 /* The mode is removed and we need to generate and distribute
2596 new channel key. Clients are not using private channel keys
2597 anymore after this. */
2599 /* Re-generate channel key */
2600 if (!silc_server_create_channel_key(server, channel, 0))
2603 /* Send the channel key. This sends it to our local clients and if
2604 we are normal server to our router as well. */
2605 silc_server_send_channel_key(server, NULL, channel,
2606 server->server_type == SILC_ROUTER ?
2607 FALSE : !server->standalone);
2609 cipher = (char *)silc_cipher_get_name(channel->channel_key);
2610 hmac = (char *)silc_hmac_get_name(channel->hmac);
2614 if (mode_mask & SILC_CHANNEL_MODE_ULIMIT) {
2615 /* User limit is set on channel */
2616 SilcUInt32 user_limit;
2618 /* Get user limit */
2619 tmp = silc_argument_get_arg_type(cmd->args, 3, NULL);
2621 if (!(channel->mode & SILC_CHANNEL_MODE_ULIMIT)) {
2622 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2623 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS, 0);
2627 SILC_GET32_MSB(user_limit, tmp);
2628 channel->user_limit = user_limit;
2631 if (channel->mode & SILC_CHANNEL_MODE_ULIMIT)
2632 /* User limit mode is unset. Remove user limit */
2633 channel->user_limit = 0;
2636 if (mode_mask & SILC_CHANNEL_MODE_PASSPHRASE) {
2637 if (!(channel->mode & SILC_CHANNEL_MODE_PASSPHRASE)) {
2638 /* Passphrase has been set to channel */
2640 /* Get the passphrase */
2641 tmp = silc_argument_get_arg_type(cmd->args, 4, NULL);
2643 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2644 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS, 0);
2648 /* Save the passphrase */
2649 passphrase = channel->passphrase = silc_memdup(tmp, strlen(tmp));
2652 if (channel->mode & SILC_CHANNEL_MODE_PASSPHRASE) {
2653 /* Passphrase mode is unset. remove the passphrase */
2654 silc_free(channel->passphrase);
2655 channel->passphrase = NULL;
2659 if (mode_mask & SILC_CHANNEL_MODE_CIPHER) {
2660 if (!(channel->mode & SILC_CHANNEL_MODE_CIPHER)) {
2661 /* Cipher to use protect the traffic */
2662 SilcCipher newkey, oldkey;
2665 cipher = silc_argument_get_arg_type(cmd->args, 5, NULL);
2667 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2668 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS, 0);
2672 /* Delete old cipher and allocate the new one */
2673 if (!silc_cipher_alloc(cipher, &newkey)) {
2674 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2675 SILC_STATUS_ERR_UNKNOWN_ALGORITHM, 0);
2679 oldkey = channel->channel_key;
2680 channel->channel_key = newkey;
2682 /* Re-generate channel key */
2683 if (!silc_server_create_channel_key(server, channel, 0)) {
2684 /* We don't have new key, revert to old one */
2685 channel->channel_key = oldkey;
2689 /* Remove old channel key for good */
2690 silc_cipher_free(oldkey);
2692 /* Send the channel key. This sends it to our local clients and if
2693 we are normal server to our router as well. */
2694 silc_server_send_channel_key(server, NULL, channel,
2695 server->server_type == SILC_ROUTER ?
2696 FALSE : !server->standalone);
2699 if (channel->mode & SILC_CHANNEL_MODE_CIPHER) {
2700 /* Cipher mode is unset. Remove the cipher and revert back to
2702 SilcCipher newkey, oldkey;
2703 cipher = channel->cipher;
2705 /* Delete old cipher and allocate default one */
2706 if (!silc_cipher_alloc(cipher ? cipher : SILC_DEFAULT_CIPHER, &newkey)) {
2707 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2708 SILC_STATUS_ERR_UNKNOWN_ALGORITHM, 0);
2712 oldkey = channel->channel_key;
2713 channel->channel_key = newkey;
2715 /* Re-generate channel key */
2716 if (!silc_server_create_channel_key(server, channel, 0)) {
2717 /* We don't have new key, revert to old one */
2718 channel->channel_key = oldkey;
2722 /* Remove old channel key for good */
2723 silc_cipher_free(oldkey);
2725 /* Send the channel key. This sends it to our local clients and if
2726 we are normal server to our router as well. */
2727 silc_server_send_channel_key(server, NULL, channel,
2728 server->server_type == SILC_ROUTER ?
2729 FALSE : !server->standalone);
2733 if (mode_mask & SILC_CHANNEL_MODE_HMAC) {
2734 if (!(channel->mode & SILC_CHANNEL_MODE_HMAC)) {
2735 /* HMAC to use protect the traffic */
2736 unsigned char hash[32];
2740 hmac = silc_argument_get_arg_type(cmd->args, 6, NULL);
2742 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2743 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS, 0);
2747 /* Delete old hmac and allocate the new one */
2748 if (!silc_hmac_alloc(hmac, NULL, &newhmac)) {
2749 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2750 SILC_STATUS_ERR_UNKNOWN_ALGORITHM, 0);
2754 silc_hmac_free(channel->hmac);
2755 channel->hmac = newhmac;
2757 /* Set the HMAC key out of current channel key. The client must do
2759 silc_hash_make(silc_hmac_get_hash(channel->hmac), channel->key,
2760 channel->key_len / 8, hash);
2761 silc_hmac_set_key(channel->hmac, hash,
2762 silc_hash_len(silc_hmac_get_hash(channel->hmac)));
2763 memset(hash, 0, sizeof(hash));
2766 if (channel->mode & SILC_CHANNEL_MODE_HMAC) {
2767 /* Hmac mode is unset. Remove the hmac and revert back to
2770 unsigned char hash[32];
2771 hmac = channel->hmac_name;
2773 /* Delete old hmac and allocate default one */
2774 silc_hmac_free(channel->hmac);
2775 if (!silc_hmac_alloc(hmac ? hmac : SILC_DEFAULT_HMAC, NULL, &newhmac)) {
2776 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2777 SILC_STATUS_ERR_UNKNOWN_ALGORITHM, 0);
2781 silc_hmac_free(channel->hmac);
2782 channel->hmac = newhmac;
2784 /* Set the HMAC key out of current channel key. The client must do
2786 silc_hash_make(silc_hmac_get_hash(channel->hmac), channel->key,
2787 channel->key_len / 8,
2789 silc_hmac_set_key(channel->hmac, hash,
2790 silc_hash_len(silc_hmac_get_hash(channel->hmac)));
2791 memset(hash, 0, sizeof(hash));
2795 if (mode_mask & SILC_CHANNEL_MODE_FOUNDER_AUTH) {
2796 if (chl->mode & SILC_CHANNEL_UMODE_CHANFO) {
2797 if (!(channel->mode & SILC_CHANNEL_MODE_FOUNDER_AUTH)) {
2798 /* Set the founder authentication */
2799 tmp = silc_argument_get_arg_type(cmd->args, 7, &tmp_len);
2801 silc_server_command_send_status_reply(
2802 cmd, SILC_COMMAND_CMODE,
2803 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS, 0);
2807 /* Verify the payload before setting the mode */
2808 if (!silc_auth_verify_data(tmp, tmp_len, SILC_AUTH_PUBLIC_KEY,
2809 idata->public_key, 0, server->sha1hash,
2810 client->id, SILC_ID_CLIENT)) {
2811 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2812 SILC_STATUS_ERR_AUTH_FAILED,
2817 /* Save the public key */
2818 channel->founder_key = silc_pkcs_public_key_copy(idata->public_key);
2819 if (!channel->founder_key) {
2820 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2821 SILC_STATUS_ERR_AUTH_FAILED,
2826 founder_key = channel->founder_key;
2827 fkey = silc_pkcs_public_key_encode(founder_key, &fkey_len);
2829 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2830 SILC_STATUS_ERR_AUTH_FAILED,
2832 silc_pkcs_public_key_free(channel->founder_key);
2833 channel->founder_key = NULL;
2839 if (chl->mode & SILC_CHANNEL_UMODE_CHANFO) {
2840 if (channel->mode & SILC_CHANNEL_MODE_FOUNDER_AUTH) {
2841 if (channel->founder_key)
2842 silc_pkcs_public_key_free(channel->founder_key);
2843 channel->founder_key = NULL;
2848 /* Finally, set the mode */
2849 old_mask = channel->mode = mode_mask;
2851 /* Send CMODE_CHANGE notify. */
2852 cidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
2853 silc_server_send_notify_to_channel(server, NULL, channel, FALSE,
2854 SILC_NOTIFY_TYPE_CMODE_CHANGE, 6,
2855 cidp->data, cidp->len,
2857 cipher, cipher ? strlen(cipher) : 0,
2858 hmac, hmac ? strlen(hmac) : 0,
2859 passphrase, passphrase ?
2860 strlen(passphrase) : 0,
2863 /* Set CMODE notify type to network */
2864 silc_server_send_notify_cmode(server, SILC_PRIMARY_ROUTE(server),
2865 SILC_BROADCAST(server), channel,
2866 mode_mask, client->id, SILC_ID_CLIENT,
2867 cipher, hmac, passphrase, founder_key);
2869 /* Send command reply to sender */
2870 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_CMODE,
2871 SILC_STATUS_OK, 0, ident, 2,
2872 2, tmp_id, tmp_len2,
2874 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
2875 packet->data, packet->len, FALSE);
2877 silc_buffer_free(packet);
2878 silc_buffer_free(cidp);
2881 channel->mode = old_mask;
2883 silc_free(channel_id);
2884 silc_server_command_free(cmd);
2887 /* Server side of CUMODE command. Changes client's mode on a channel. */
2889 SILC_SERVER_CMD_FUNC(cumode)
2891 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2892 SilcServer server = cmd->server;
2893 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
2894 SilcIDListData idata = (SilcIDListData)client;
2895 SilcChannelID *channel_id = NULL;
2896 SilcClientID *client_id = NULL;
2897 SilcChannelEntry channel;
2898 SilcClientEntry target_client;
2899 SilcChannelClientEntry chl;
2900 SilcBuffer packet, idp;
2901 unsigned char *tmp_id, *tmp_ch_id, *tmp_mask;
2902 SilcUInt32 target_mask, sender_mask = 0, tmp_len, tmp_ch_len;
2904 SilcUInt16 ident = silc_command_get_ident(cmd->payload);
2905 SilcPublicKey founder_key = NULL;
2906 unsigned char *fkey = NULL;
2907 SilcUInt32 fkey_len = 0;
2912 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_CUMODE, cmd, 3, 4);
2914 /* Get Channel ID */
2915 tmp_ch_id = silc_argument_get_arg_type(cmd->args, 1, &tmp_ch_len);
2917 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
2918 SILC_STATUS_ERR_NO_CHANNEL_ID, 0);
2921 channel_id = silc_id_payload_parse_id(tmp_ch_id, tmp_ch_len, NULL);
2923 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
2924 SILC_STATUS_ERR_NO_CHANNEL_ID, 0);
2928 /* Get channel entry */
2929 channel = silc_idlist_find_channel_by_id(server->local_list,
2932 channel = silc_idlist_find_channel_by_id(server->global_list,
2935 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
2936 SILC_STATUS_ERR_NO_SUCH_CHANNEL,
2942 /* Check whether sender is on the channel */
2943 if (!silc_server_client_on_channel(client, channel, &chl)) {
2944 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
2945 SILC_STATUS_ERR_NOT_ON_CHANNEL, 0);
2948 sender_mask = chl->mode;
2950 /* Get the target client's channel mode mask */
2951 tmp_mask = silc_argument_get_arg_type(cmd->args, 2, NULL);
2953 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
2954 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
2958 SILC_GET32_MSB(target_mask, tmp_mask);
2960 /* Get target Client ID */
2961 tmp_id = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
2963 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
2964 SILC_STATUS_ERR_NO_CLIENT_ID, 0);
2967 client_id = silc_id_payload_parse_id(tmp_id, tmp_len, NULL);
2969 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
2970 SILC_STATUS_ERR_NO_CLIENT_ID, 0);
2974 /* Get target client's entry */
2975 target_client = silc_idlist_find_client_by_id(server->local_list,
2976 client_id, TRUE, NULL);
2977 if (!target_client) {
2978 target_client = silc_idlist_find_client_by_id(server->global_list,
2979 client_id, TRUE, NULL);
2982 if (target_client != client &&
2983 !(sender_mask & SILC_CHANNEL_UMODE_CHANFO) &&
2984 !(sender_mask & SILC_CHANNEL_UMODE_CHANOP)) {
2985 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
2986 SILC_STATUS_ERR_NO_CHANNEL_PRIV, 0);
2990 /* Check whether target client is on the channel */
2991 if (target_client != client) {
2992 if (!silc_server_client_on_channel(target_client, channel, &chl)) {
2993 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
2994 SILC_STATUS_ERR_USER_NOT_ON_CHANNEL, 0);
3003 /* If the target client is founder, no one else can change their mode
3005 if (chl->mode & SILC_CHANNEL_UMODE_CHANFO && client != target_client) {
3006 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3007 SILC_STATUS_ERR_NO_CHANNEL_FOPRIV,
3012 if (target_mask & SILC_CHANNEL_UMODE_CHANFO) {
3013 if (target_client != client) {
3014 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3015 SILC_STATUS_ERR_NOT_YOU, 0);
3019 if (!(chl->mode & SILC_CHANNEL_UMODE_CHANFO)) {
3020 /* The client tries to claim the founder rights. */
3021 unsigned char *tmp_auth;
3022 SilcUInt32 tmp_auth_len;
3023 SilcChannelClientEntry chl2;
3024 SilcHashTableList htl;
3026 if (!(channel->mode & SILC_CHANNEL_MODE_FOUNDER_AUTH) ||
3027 !channel->founder_key || !idata->public_key ||
3028 !silc_pkcs_public_key_compare(channel->founder_key,
3029 idata->public_key)) {
3030 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3031 SILC_STATUS_ERR_AUTH_FAILED, 0);
3035 tmp_auth = silc_argument_get_arg_type(cmd->args, 4, &tmp_auth_len);
3037 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3038 SILC_STATUS_ERR_AUTH_FAILED, 0);
3042 /* Verify the authentication payload */
3043 if (!silc_auth_verify_data(tmp_auth, tmp_auth_len, SILC_AUTH_PUBLIC_KEY,
3044 channel->founder_key, 0, server->sha1hash,
3045 client->id, SILC_ID_CLIENT)) {
3046 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3047 SILC_STATUS_ERR_AUTH_FAILED, 0);
3052 founder_key = channel->founder_key;
3053 fkey = silc_pkcs_public_key_encode(founder_key, &fkey_len);
3055 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3056 SILC_STATUS_ERR_AUTH_FAILED, 0);
3060 /* There cannot be anyone else as founder on the channel now. This
3061 client is definitely the founder due to this authentication */
3062 silc_hash_table_list(channel->user_list, &htl);
3063 while (silc_hash_table_get(&htl, NULL, (void *)&chl2))
3064 if (chl2->mode & SILC_CHANNEL_UMODE_CHANFO) {
3065 chl2->mode &= ~SILC_CHANNEL_UMODE_CHANFO;
3066 silc_server_force_cumode_change(server, NULL, channel, chl2,
3070 silc_hash_table_list_reset(&htl);
3072 sender_mask = chl->mode |= SILC_CHANNEL_UMODE_CHANFO;
3075 if (chl->mode & SILC_CHANNEL_UMODE_CHANFO) {
3076 if (target_client == client) {
3077 /* Remove channel founder rights from itself */
3078 chl->mode &= ~SILC_CHANNEL_UMODE_CHANFO;
3081 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3082 SILC_STATUS_ERR_NOT_YOU, 0);
3088 if (target_mask & SILC_CHANNEL_UMODE_CHANOP) {
3089 /* Promote to operator */
3090 if (!(chl->mode & SILC_CHANNEL_UMODE_CHANOP)) {
3091 if (!(sender_mask & SILC_CHANNEL_UMODE_CHANOP) &&
3092 !(sender_mask & SILC_CHANNEL_UMODE_CHANFO)) {
3093 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3094 SILC_STATUS_ERR_NO_CHANNEL_PRIV,
3099 chl->mode |= SILC_CHANNEL_UMODE_CHANOP;
3103 if (chl->mode & SILC_CHANNEL_UMODE_CHANOP) {
3104 if (!(sender_mask & SILC_CHANNEL_UMODE_CHANOP) &&
3105 !(sender_mask & SILC_CHANNEL_UMODE_CHANFO)) {
3106 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3107 SILC_STATUS_ERR_NO_CHANNEL_PRIV,
3112 /* Demote to normal user */
3113 chl->mode &= ~SILC_CHANNEL_UMODE_CHANOP;
3118 if (target_mask & SILC_CHANNEL_UMODE_BLOCK_MESSAGES) {
3119 if (target_client != client) {
3120 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3121 SILC_STATUS_ERR_NOT_YOU, 0);
3125 if (!(chl->mode & SILC_CHANNEL_UMODE_BLOCK_MESSAGES)) {
3126 chl->mode |= SILC_CHANNEL_UMODE_BLOCK_MESSAGES;
3130 if (chl->mode & SILC_CHANNEL_UMODE_BLOCK_MESSAGES) {
3131 if (target_client != client) {
3132 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3133 SILC_STATUS_ERR_NOT_YOU, 0);
3137 chl->mode &= ~SILC_CHANNEL_UMODE_BLOCK_MESSAGES;
3142 if (target_mask & SILC_CHANNEL_UMODE_BLOCK_MESSAGES_USERS) {
3143 if (target_client != client) {
3144 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3145 SILC_STATUS_ERR_NOT_YOU, 0);
3149 if (!(chl->mode & SILC_CHANNEL_UMODE_BLOCK_MESSAGES_USERS)) {
3150 chl->mode |= SILC_CHANNEL_UMODE_BLOCK_MESSAGES_USERS;
3154 if (chl->mode & SILC_CHANNEL_UMODE_BLOCK_MESSAGES_USERS) {
3155 if (target_client != client) {
3156 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3157 SILC_STATUS_ERR_NOT_YOU, 0);
3161 chl->mode &= ~SILC_CHANNEL_UMODE_BLOCK_MESSAGES_USERS;
3166 if (target_mask & SILC_CHANNEL_UMODE_BLOCK_MESSAGES_ROBOTS) {
3167 if (target_client != client) {
3168 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3169 SILC_STATUS_ERR_NOT_YOU, 0);
3173 if (!(chl->mode & SILC_CHANNEL_UMODE_BLOCK_MESSAGES_ROBOTS)) {
3174 chl->mode |= SILC_CHANNEL_UMODE_BLOCK_MESSAGES_ROBOTS;
3178 if (chl->mode & SILC_CHANNEL_UMODE_BLOCK_MESSAGES_ROBOTS) {
3179 if (target_client != client) {
3180 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3181 SILC_STATUS_ERR_NOT_YOU, 0);
3185 chl->mode &= ~SILC_CHANNEL_UMODE_BLOCK_MESSAGES_ROBOTS;
3190 if (target_mask & SILC_CHANNEL_UMODE_QUIET) {
3191 if (!(chl->mode & SILC_CHANNEL_UMODE_QUIET)) {
3192 if (client == target_client) {
3193 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3194 SILC_STATUS_ERR_PERM_DENIED, 0);
3197 chl->mode |= SILC_CHANNEL_UMODE_QUIET;
3201 if (chl->mode & SILC_CHANNEL_UMODE_QUIET) {
3202 if (client == target_client) {
3203 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3204 SILC_STATUS_ERR_PERM_DENIED, 0);
3207 chl->mode &= ~SILC_CHANNEL_UMODE_QUIET;
3212 idp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
3213 tmp_id = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
3215 /* Send notify to channel, notify only if mode was actually changed. */
3217 silc_server_send_notify_to_channel(server, NULL, channel, FALSE,
3218 SILC_NOTIFY_TYPE_CUMODE_CHANGE, 4,
3219 idp->data, idp->len,
3224 /* Set CUMODE notify type to network */
3225 silc_server_send_notify_cumode(server, SILC_PRIMARY_ROUTE(server),
3226 SILC_BROADCAST(server), channel,
3227 target_mask, client->id, SILC_ID_CLIENT,
3228 target_client->id, founder_key);
3231 /* Send command reply to sender */
3232 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_CUMODE,
3233 SILC_STATUS_OK, 0, ident, 3,
3235 3, tmp_ch_id, tmp_ch_len,
3236 4, tmp_id, tmp_len);
3237 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
3238 packet->data, packet->len, FALSE);
3240 silc_buffer_free(packet);
3241 silc_buffer_free(idp);
3244 silc_free(channel_id);
3245 silc_free(client_id);
3247 silc_server_command_free(cmd);
3250 /* Server side of KICK command. Kicks client out of channel. */
3252 SILC_SERVER_CMD_FUNC(kick)
3254 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
3255 SilcServer server = cmd->server;
3256 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
3257 SilcClientEntry target_client;
3258 SilcChannelID *channel_id;
3259 SilcClientID *client_id;
3260 SilcChannelEntry channel;
3261 SilcChannelClientEntry chl;
3263 SilcUInt32 tmp_len, target_idp_len;
3264 unsigned char *tmp, *comment, *target_idp;
3269 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_LEAVE, cmd, 1, 3);
3271 /* Get Channel ID */
3272 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
3274 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
3275 SILC_STATUS_ERR_NO_CHANNEL_ID, 0);
3278 channel_id = silc_id_payload_parse_id(tmp, tmp_len, NULL);
3280 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
3281 SILC_STATUS_ERR_NO_CHANNEL_ID, 0);
3285 /* Get channel entry */
3286 channel = silc_idlist_find_channel_by_id(server->local_list,
3289 channel = silc_idlist_find_channel_by_id(server->local_list,
3292 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
3293 SILC_STATUS_ERR_NO_SUCH_CHANNEL,
3299 /* Check whether sender is on the channel */
3300 if (!silc_server_client_on_channel(client, channel, &chl)) {
3301 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
3302 SILC_STATUS_ERR_NOT_ON_CHANNEL, 0);
3306 /* Check that the kicker is channel operator or channel founder */
3307 if (!(chl->mode & SILC_CHANNEL_UMODE_CHANOP) &&
3308 !(chl->mode & SILC_CHANNEL_UMODE_CHANFO)) {
3309 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
3310 SILC_STATUS_ERR_NO_CHANNEL_PRIV, 0);
3314 /* Get target Client ID */
3315 target_idp = silc_argument_get_arg_type(cmd->args, 2, &target_idp_len);
3317 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
3318 SILC_STATUS_ERR_NO_CLIENT_ID, 0);
3321 client_id = silc_id_payload_parse_id(target_idp, target_idp_len, NULL);
3323 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
3324 SILC_STATUS_ERR_NO_CLIENT_ID, 0);
3328 /* Get target client's entry */
3329 target_client = silc_idlist_find_client_by_id(server->local_list,
3330 client_id, TRUE, NULL);
3331 if (!target_client) {
3332 target_client = silc_idlist_find_client_by_id(server->global_list,
3333 client_id, TRUE, NULL);
3336 /* Check whether target client is on the channel */
3337 if (!silc_server_client_on_channel(target_client, channel, &chl)) {
3338 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
3339 SILC_STATUS_ERR_USER_NOT_ON_CHANNEL,
3344 /* Check that the target client is not channel founder. Channel founder
3345 cannot be kicked from the channel. */
3346 if (chl->mode & SILC_CHANNEL_UMODE_CHANFO) {
3347 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
3348 SILC_STATUS_ERR_NO_CHANNEL_FOPRIV,
3355 comment = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
3359 /* Send command reply to sender */
3360 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
3363 /* Send KICKED notify to local clients on the channel */
3364 idp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
3365 silc_server_send_notify_to_channel(server, NULL, channel, FALSE,
3366 SILC_NOTIFY_TYPE_KICKED, 3,
3367 target_idp, target_idp_len,
3368 comment, comment ? strlen(comment) : 0,
3369 idp->data, idp->len);
3370 silc_buffer_free(idp);
3372 /* Send KICKED notify to primary route */
3373 silc_server_send_notify_kicked(server, SILC_PRIMARY_ROUTE(server),
3374 SILC_BROADCAST(server), channel,
3375 target_client->id, client->id, comment);
3377 /* Remove the client from the channel. If the channel does not exist
3378 after removing the client then the client kicked itself off the channel
3379 and we don't have to send anything after that. */
3380 if (!silc_server_remove_from_one_channel(server, NULL, channel,
3381 target_client, FALSE))
3384 if (!(channel->mode & SILC_CHANNEL_MODE_PRIVKEY)) {
3385 /* Re-generate channel key */
3386 if (!silc_server_create_channel_key(server, channel, 0))
3389 /* Send the channel key to the channel. The key of course is not sent
3390 to the client who was kicked off the channel. */
3391 silc_server_send_channel_key(server, target_client->connection, channel,
3392 server->server_type == SILC_ROUTER ?
3393 FALSE : !server->standalone);
3397 silc_server_command_free(cmd);
3400 /* Server side of OPER command. Client uses this comand to obtain server
3401 operator privileges to this server/router. */
3403 SILC_SERVER_CMD_FUNC(oper)
3405 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
3406 SilcServer server = cmd->server;
3407 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
3408 unsigned char *username, *auth;
3410 SilcServerConfigAdmin *admin;
3411 SilcIDListData idata = (SilcIDListData)client;
3412 bool result = FALSE;
3413 SilcPublicKey cached_key;
3415 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT || !client)
3418 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_OPER, cmd, 1, 2);
3420 /* Get the username */
3421 username = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
3423 silc_server_command_send_status_reply(cmd, SILC_COMMAND_OPER,
3424 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
3429 /* Get the admin configuration */
3430 admin = silc_server_config_find_admin(server, cmd->sock->ip,
3431 username, client->nickname);
3433 admin = silc_server_config_find_admin(server, cmd->sock->hostname,
3434 username, client->nickname);
3436 silc_server_command_send_status_reply(cmd, SILC_COMMAND_OPER,
3437 SILC_STATUS_ERR_AUTH_FAILED,
3439 SILC_LOG_INFO(("OPER authentication failed for username '%s' by"
3440 "nickname '%s' from %s", username,
3441 client->nickname, cmd->sock->hostname));
3446 /* Get the authentication payload */
3447 auth = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
3449 silc_server_command_send_status_reply(cmd, SILC_COMMAND_OPER,
3450 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
3455 /* Verify the authentication data. If both passphrase and public key
3456 is set then try both of them. */
3457 if (admin->passphrase)
3458 result = silc_auth_verify_data(auth, tmp_len, SILC_AUTH_PASSWORD,
3459 admin->passphrase, admin->passphrase_len,
3460 idata->hash, client->id, SILC_ID_CLIENT);
3461 if (!result && admin->publickeys) {
3462 cached_key = silc_server_get_public_key(server, admin->publickeys);
3465 result = silc_auth_verify_data(auth, tmp_len, SILC_AUTH_PUBLIC_KEY,
3466 cached_key, 0, idata->hash,
3467 client->id, SILC_ID_CLIENT);
3470 /* Authentication failed */
3471 silc_server_command_send_status_reply(cmd, SILC_COMMAND_OPER,
3472 SILC_STATUS_ERR_AUTH_FAILED,
3477 /* Client is now server operator */
3478 client->mode |= SILC_UMODE_SERVER_OPERATOR;
3480 /* Update statistics */
3481 if (SILC_IS_LOCAL(client))
3482 server->stat.my_server_ops++;
3483 if (server->server_type == SILC_ROUTER)
3484 server->stat.server_ops++;
3486 /* Send UMODE change to primary router */
3487 silc_server_send_notify_umode(server, SILC_PRIMARY_ROUTE(server),
3488 SILC_BROADCAST(server), client->id,
3491 /* Check if anyone is watching this nickname */
3492 if (server->server_type == SILC_ROUTER)
3493 silc_server_check_watcher_list(server, client, NULL,
3494 SILC_NOTIFY_TYPE_UMODE_CHANGE);
3496 /* Send reply to the sender */
3497 silc_server_command_send_status_reply(cmd, SILC_COMMAND_OPER,
3501 silc_server_command_free(cmd);
3504 SILC_TASK_CALLBACK(silc_server_command_detach_cb)
3506 SilcServer server = app_context;
3507 QuitInternal q = (QuitInternal)context;
3508 SilcClientID *client_id = (SilcClientID *)q->sock;
3509 SilcClientEntry client;
3510 SilcSocketConnection sock;
3512 client = silc_idlist_find_client_by_id(server->local_list, client_id,
3514 if (client && client->connection) {
3515 sock = client->connection;
3517 /* If there is pending outgoing data for the client then purge it
3518 to the network before closing connection. */
3519 silc_server_packet_queue_purge(server, sock);
3521 /* Close the connection on our side */
3522 client->router = NULL;
3523 client->connection = NULL;
3524 sock->user_data = NULL;
3525 silc_server_close_connection(server, sock);
3528 silc_free(client_id);
3532 SILC_TASK_CALLBACK(silc_server_command_detach_timeout)
3534 SilcServer server = app_context;
3535 QuitInternal q = (QuitInternal)context;
3536 SilcClientID *client_id = (SilcClientID *)q->sock;
3537 SilcClientEntry client;
3539 client = silc_idlist_find_client_by_id(server->local_list, client_id,
3541 if (client && client->mode & SILC_UMODE_DETACHED) {
3542 SILC_LOG_DEBUG(("Detach timeout"));
3543 silc_server_free_client_data(server, NULL, client, TRUE,
3547 silc_free(client_id);
3551 /* Server side of DETACH command. Detached the client from the network
3552 by closing the connection but preserving the session. */
3554 SILC_SERVER_CMD_FUNC(detach)
3556 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
3557 SilcServer server = cmd->server;
3558 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
3561 if (server->config->detach_disabled) {
3562 silc_server_command_send_status_reply(cmd, SILC_COMMAND_DETACH,
3563 SILC_STATUS_ERR_UNKNOWN_COMMAND, 0);
3567 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT || !client)
3570 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_DETACH, cmd, 0, 0);
3572 /* Remove operator privileges, since the client may resume in some
3573 other server which to it does not have operator privileges. */
3574 SILC_OPER_STATS_UPDATE(client, server, SILC_UMODE_SERVER_OPERATOR);
3575 SILC_OPER_STATS_UPDATE(client, router, SILC_UMODE_ROUTER_OPERATOR);
3577 /* Send the user mode notify to notify that client is detached */
3578 client->mode |= SILC_UMODE_DETACHED;
3579 client->data.status &= ~SILC_IDLIST_STATUS_RESUMED;
3580 client->data.status &= ~SILC_IDLIST_STATUS_NOATTR;
3581 client->last_command = 0;
3582 client->fast_command = 0;
3583 silc_server_send_notify_umode(server, SILC_PRIMARY_ROUTE(server),
3584 SILC_BROADCAST(server), client->id,
3586 server->stat.my_detached++;
3588 /* Check if anyone is watching this nickname */
3589 if (server->server_type == SILC_ROUTER)
3590 silc_server_check_watcher_list(server, client, NULL,
3591 SILC_NOTIFY_TYPE_UMODE_CHANGE);
3593 q = silc_calloc(1, sizeof(*q));
3594 q->sock = silc_id_dup(client->id, SILC_ID_CLIENT);
3595 silc_schedule_task_add(server->schedule, 0, silc_server_command_detach_cb,
3596 q, 0, 200000, SILC_TASK_TIMEOUT, SILC_TASK_PRI_LOW);
3598 if (server->config->detach_timeout) {
3599 q = silc_calloc(1, sizeof(*q));
3600 q->sock = silc_id_dup(client->id, SILC_ID_CLIENT);
3601 silc_schedule_task_add(server->schedule, 0,
3602 silc_server_command_detach_timeout,
3603 q, server->config->detach_timeout * 60,
3604 0, SILC_TASK_TIMEOUT, SILC_TASK_PRI_LOW);
3607 /* Send reply to the sender */
3608 silc_server_command_send_status_reply(cmd, SILC_COMMAND_DETACH,
3612 silc_server_command_free(cmd);
3615 /* Server side of WATCH command. */
3617 SILC_SERVER_CMD_FUNC(watch)
3619 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
3620 SilcServer server = cmd->server;
3621 char *add_nick, *del_nick;
3622 SilcUInt32 add_nick_len, del_nick_len, tmp_len;
3624 unsigned char hash[16], *tmp;
3625 SilcClientEntry client;
3626 SilcClientID *client_id = NULL;
3628 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_WATCH, cmd, 1, 3);
3630 if (server->server_type != SILC_ROUTER && !server->standalone) {
3631 if (!cmd->pending) {
3632 /* Send the command to router */
3634 SilcUInt16 old_ident;
3636 SILC_LOG_DEBUG(("Forwarding WATCH to router"));
3638 old_ident = silc_command_get_ident(cmd->payload);
3639 silc_command_set_ident(cmd->payload, ++server->cmd_ident);
3640 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
3642 silc_server_packet_send(server, SILC_PRIMARY_ROUTE(server),
3643 SILC_PACKET_COMMAND, cmd->packet->flags,
3644 tmpbuf->data, tmpbuf->len, TRUE);
3646 /* Reprocess this packet after received reply from router */
3647 silc_server_command_pending(server, SILC_COMMAND_WATCH,
3648 silc_command_get_ident(cmd->payload),
3649 silc_server_command_watch,
3650 silc_server_command_dup(cmd));
3651 cmd->pending = TRUE;
3652 silc_command_set_ident(cmd->payload, old_ident);
3653 silc_buffer_free(tmpbuf);
3654 } else if (context2) {
3655 /* Received reply from router, just send same data to the client. */
3656 SilcServerCommandReplyContext reply = context2;
3659 SILC_LOG_DEBUG(("Received reply to WATCH from router"));
3660 silc_command_get_status(reply->payload, &status, NULL);
3661 silc_server_command_send_status_reply(cmd, SILC_COMMAND_WATCH, status,
3668 /* We are router and keep the watch list for local cell */
3670 /* Get the client ID */
3671 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
3673 silc_server_command_send_status_reply(cmd, SILC_COMMAND_WATCH,
3674 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
3678 client_id = silc_id_payload_parse_id(tmp, tmp_len, NULL);
3680 silc_server_command_send_status_reply(cmd, SILC_COMMAND_WATCH,
3681 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID,
3686 /* Get the client entry which must be in local list */
3687 client = silc_idlist_find_client_by_id(server->local_list,
3688 client_id, TRUE, NULL);
3690 silc_server_command_send_status_reply(cmd, SILC_COMMAND_WATCH,
3691 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID,
3697 add_nick = silc_argument_get_arg_type(cmd->args, 2, &add_nick_len);
3698 del_nick = silc_argument_get_arg_type(cmd->args, 3, &del_nick_len);
3699 if (!add_nick && !del_nick) {
3700 silc_server_command_send_status_reply(cmd, SILC_COMMAND_WATCH,
3701 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
3706 if (add_nick && add_nick_len > 128)
3707 add_nick[128] = '\0';
3708 if (del_nick && del_nick_len > 128)
3709 del_nick[128] = '\0';
3711 memset(nick, 0, sizeof(nick));
3713 /* Add new nickname to be watched in our cell */
3715 if (silc_server_name_bad_chars(add_nick, strlen(add_nick)) == TRUE) {
3716 silc_server_command_send_status_reply(cmd, SILC_COMMAND_WATCH,
3717 SILC_STATUS_ERR_BAD_NICKNAME, 0);
3721 /* Hash the nick, we have the hash saved, not nicks because we can
3722 do one to one mapping to the nick from Client ID hash this way. */
3723 silc_to_lower(add_nick, nick, sizeof(nick) - 1);
3724 silc_hash_make(server->md5hash, nick, strlen(nick), hash);
3726 /* Check whether this client is already watching this nickname */
3727 if (silc_hash_table_find_by_context(server->watcher_list, hash,
3729 /* Nickname is alredy being watched for this client */
3730 silc_server_command_send_status_reply(cmd, SILC_COMMAND_WATCH,
3731 SILC_STATUS_ERR_NICKNAME_IN_USE,
3736 /* Get the nickname from the watcher list and use the same key in
3737 new entries as well. If key doesn't exist then create it. */
3738 if (!silc_hash_table_find(server->watcher_list, hash, (void **)&tmp, NULL))
3739 tmp = silc_memdup(hash, CLIENTID_HASH_LEN);
3741 /* Add the client to the watcher list with the specified nickname hash. */
3742 silc_hash_table_add(server->watcher_list, tmp, client);
3745 /* Delete nickname from watch list */
3747 if (silc_server_name_bad_chars(del_nick, strlen(del_nick)) == TRUE) {
3748 silc_server_command_send_status_reply(cmd, SILC_COMMAND_WATCH,
3749 SILC_STATUS_ERR_BAD_NICKNAME, 0);
3753 /* Hash the nick, we have the hash saved, not nicks because we can
3754 do one to one mapping to the nick from Client ID hash this way. */
3755 silc_to_lower(del_nick, nick, sizeof(nick) - 1);
3756 silc_hash_make(server->md5hash, nick, strlen(nick), hash);
3758 /* Check that this client is watching for this nickname */
3759 if (!silc_hash_table_find_by_context(server->watcher_list, hash,
3760 client, (void **)&tmp)) {
3761 /* Nickname is alredy being watched for this client */
3762 silc_server_command_send_status_reply(cmd, SILC_COMMAND_WATCH,
3763 SILC_STATUS_ERR_NO_SUCH_NICK, 0);
3767 /* Delete the nickname from the watcher list. */
3768 silc_hash_table_del_by_context(server->watcher_list, hash, client);
3770 /* Now check whether there still exists entries with this key, if not
3771 then free the key to not leak memory. */
3772 if (!silc_hash_table_find(server->watcher_list, hash, NULL, NULL))
3776 /* Distribute the watch list to backup routers too */
3777 if (server->backup) {
3779 silc_command_set_ident(cmd->payload, ++server->cmd_ident);
3780 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
3781 silc_server_backup_send(server, NULL, SILC_PACKET_COMMAND,
3782 cmd->packet->flags, tmpbuf->data, tmpbuf->len,
3784 silc_buffer_free(tmpbuf);
3787 silc_server_command_send_status_reply(cmd, SILC_COMMAND_WATCH,
3791 silc_free(client_id);
3792 silc_server_command_free(cmd);
3795 /* Server side of SILCOPER command. Client uses this comand to obtain router
3796 operator privileges to this router. */
3798 SILC_SERVER_CMD_FUNC(silcoper)
3800 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
3801 SilcServer server = cmd->server;
3802 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
3803 unsigned char *username, *auth;
3805 SilcServerConfigAdmin *admin;
3806 SilcIDListData idata = (SilcIDListData)client;
3807 bool result = FALSE;
3808 SilcPublicKey cached_key;
3810 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT || !client)
3813 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_SILCOPER, cmd, 1, 2);
3815 if (server->server_type != SILC_ROUTER) {
3816 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
3817 SILC_STATUS_ERR_AUTH_FAILED, 0);
3821 /* Get the username */
3822 username = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
3824 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
3825 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
3830 /* Get the admin configuration */
3831 admin = silc_server_config_find_admin(server, cmd->sock->ip,
3832 username, client->nickname);
3834 admin = silc_server_config_find_admin(server, cmd->sock->hostname,
3835 username, client->nickname);
3837 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
3838 SILC_STATUS_ERR_AUTH_FAILED, 0);
3839 SILC_LOG_INFO(("SILCOPER authentication failed for username '%s' by"
3840 "nickname '%s' from %s", username,
3841 client->nickname, cmd->sock->hostname));
3846 /* Get the authentication payload */
3847 auth = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
3849 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
3850 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
3855 /* Verify the authentication data. If both passphrase and public key
3856 is set then try both of them. */
3857 if (admin->passphrase)
3858 result = silc_auth_verify_data(auth, tmp_len, SILC_AUTH_PASSWORD,
3859 admin->passphrase, admin->passphrase_len,
3860 idata->hash, client->id, SILC_ID_CLIENT);
3861 if (!result && admin->publickeys) {
3862 cached_key = silc_server_get_public_key(server, admin->publickeys);
3865 result = silc_auth_verify_data(auth, tmp_len, SILC_AUTH_PUBLIC_KEY,
3866 cached_key, 0, idata->hash,
3867 client->id, SILC_ID_CLIENT);
3870 /* Authentication failed */
3871 silc_server_command_send_status_reply(cmd, SILC_COMMAND_OPER,
3872 SILC_STATUS_ERR_AUTH_FAILED, 0);
3876 /* Client is now router operator */
3877 client->mode |= SILC_UMODE_ROUTER_OPERATOR;
3879 /* Update statistics */
3880 if (SILC_IS_LOCAL(client))
3881 server->stat.my_router_ops++;
3882 if (server->server_type == SILC_ROUTER)
3883 server->stat.router_ops++;
3885 /* Send UMODE change to primary router */
3886 silc_server_send_notify_umode(server, SILC_PRIMARY_ROUTE(server),
3887 SILC_BROADCAST(server), client->id,
3890 /* Check if anyone is watching this nickname */
3891 if (server->server_type == SILC_ROUTER)
3892 silc_server_check_watcher_list(server, client, NULL,
3893 SILC_NOTIFY_TYPE_UMODE_CHANGE);
3895 /* Send reply to the sender */
3896 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
3900 silc_server_command_free(cmd);
3903 /* Server side of command BAN. This is used to manage the ban list of the
3904 channel. To add clients and remove clients from the ban list. */
3906 SILC_SERVER_CMD_FUNC(ban)
3908 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
3909 SilcServer server = cmd->server;
3910 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
3912 SilcChannelEntry channel;
3913 SilcChannelClientEntry chl;
3914 SilcChannelID *channel_id = NULL;
3915 unsigned char *id, *add, *del;
3916 SilcUInt32 id_len, tmp_len;
3917 SilcUInt16 ident = silc_command_get_ident(cmd->payload);
3919 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT || !client)
3922 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_BAN, cmd, 0, 3);
3924 /* Get Channel ID */
3925 id = silc_argument_get_arg_type(cmd->args, 1, &id_len);
3927 channel_id = silc_id_payload_parse_id(id, id_len, NULL);
3929 silc_server_command_send_status_reply(cmd, SILC_COMMAND_BAN,
3930 SILC_STATUS_ERR_NO_CHANNEL_ID, 0);
3935 /* Get channel entry. The server must know about the channel since the
3936 client is expected to be on the channel. */
3937 channel = silc_idlist_find_channel_by_id(server->local_list,
3940 channel = silc_idlist_find_channel_by_id(server->global_list,
3943 silc_server_command_send_status_reply(cmd, SILC_COMMAND_BAN,
3944 SILC_STATUS_ERR_NO_SUCH_CHANNEL,
3950 /* Check whether this client is on the channel */
3951 if (!silc_server_client_on_channel(client, channel, &chl)) {
3952 silc_server_command_send_status_reply(cmd, SILC_COMMAND_BAN,
3953 SILC_STATUS_ERR_NOT_ON_CHANNEL, 0);
3957 /* The client must be at least channel operator. */
3958 if (!(chl->mode & SILC_CHANNEL_UMODE_CHANOP)) {
3959 silc_server_command_send_status_reply(cmd, SILC_COMMAND_BAN,
3960 SILC_STATUS_ERR_NO_CHANNEL_PRIV, 0);
3964 /* Get the new ban and add it to the ban list */
3965 add = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
3967 if (!channel->ban_list)
3968 channel->ban_list = silc_calloc(tmp_len + 2, sizeof(*channel->ban_list));
3970 channel->ban_list = silc_realloc(channel->ban_list,
3971 sizeof(*channel->ban_list) *
3973 strlen(channel->ban_list) + 2));
3974 if (add[tmp_len - 1] == ',')
3975 add[tmp_len - 1] = '\0';
3977 strncat(channel->ban_list, add, tmp_len);
3978 strncat(channel->ban_list, ",", 1);
3981 /* Get the ban to be removed and remove it from the list */
3982 del = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
3983 if (del && channel->ban_list) {
3984 char *start, *end, *n;
3986 if (!strncmp(channel->ban_list, del, strlen(channel->ban_list) - 1)) {
3987 silc_free(channel->ban_list);
3988 channel->ban_list = NULL;
3990 start = strstr(channel->ban_list, del);
3991 if (start && strlen(start) >= tmp_len) {
3992 end = start + tmp_len;
3993 n = silc_calloc(strlen(channel->ban_list) - tmp_len, sizeof(*n));
3994 strncat(n, channel->ban_list, start - channel->ban_list);
3995 strncat(n, end + 1, ((channel->ban_list + strlen(channel->ban_list)) -
3997 silc_free(channel->ban_list);
3998 channel->ban_list = n;
4003 /* Send the BAN notify type to our primary router. */
4005 silc_server_send_notify_ban(server, SILC_PRIMARY_ROUTE(server),
4006 SILC_BROADCAST(server), channel, add, del);
4008 /* Send the reply back to the client */
4010 silc_command_reply_payload_encode_va(SILC_COMMAND_BAN,
4011 SILC_STATUS_OK, 0, ident, 2,
4013 3, channel->ban_list,
4015 strlen(channel->ban_list) -1 : 0);
4016 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
4017 packet->data, packet->len, FALSE);
4019 silc_buffer_free(packet);
4022 silc_free(channel_id);
4023 silc_server_command_free(cmd);
4026 /* Server side command of LEAVE. Removes client from a channel. */
4028 SILC_SERVER_CMD_FUNC(leave)
4030 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4031 SilcServer server = cmd->server;
4032 SilcSocketConnection sock = cmd->sock;
4033 SilcClientEntry id_entry = (SilcClientEntry)cmd->sock->user_data;
4034 SilcChannelID *id = NULL;
4035 SilcChannelEntry channel;
4039 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT || !id_entry)
4042 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_LEAVE, cmd, 1, 2);
4044 /* Get Channel ID */
4045 tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
4047 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
4048 SILC_STATUS_ERR_NO_CHANNEL_ID, 0);
4051 id = silc_id_payload_parse_id(tmp, len, NULL);
4053 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
4054 SILC_STATUS_ERR_NO_CHANNEL_ID, 0);
4058 /* Get channel entry */
4059 channel = silc_idlist_find_channel_by_id(server->local_list, id, NULL);
4061 channel = silc_idlist_find_channel_by_id(server->global_list, id, NULL);
4063 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
4064 SILC_STATUS_ERR_NO_SUCH_CHANNEL,
4070 /* Check whether this client is on the channel */
4071 if (!silc_server_client_on_channel(id_entry, channel, NULL)) {
4072 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
4073 SILC_STATUS_ERR_NOT_ON_CHANNEL, 0);
4077 /* Notify routers that they should remove this client from their list
4078 of clients on the channel. Send LEAVE notify type. */
4079 silc_server_send_notify_leave(server, SILC_PRIMARY_ROUTE(server),
4080 SILC_BROADCAST(server), channel, id_entry->id);
4082 silc_server_command_send_status_data(cmd, SILC_COMMAND_LEAVE,
4083 SILC_STATUS_OK, 0, 2, tmp, len);
4085 /* Remove client from channel */
4086 if (!silc_server_remove_from_one_channel(server, sock, channel, id_entry,
4088 /* If the channel does not exist anymore we won't send anything */
4091 if (!(channel->mode & SILC_CHANNEL_MODE_PRIVKEY)) {
4092 /* Re-generate channel key */
4093 if (!silc_server_create_channel_key(server, channel, 0))
4096 /* Send the channel key */
4097 silc_server_send_channel_key(server, NULL, channel,
4098 server->server_type == SILC_ROUTER ?
4099 FALSE : !server->standalone);
4104 silc_server_command_free(cmd);
4107 /* Server side of command USERS. Resolves clients and their USERS currently
4108 joined on the requested channel. The list of Client ID's and their modes
4109 on the channel is sent back. */
4111 SILC_SERVER_CMD_FUNC(users)
4113 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4114 SilcServer server = cmd->server;
4115 SilcChannelEntry channel;
4116 SilcChannelID *id = NULL;
4117 SilcBuffer packet, idp;
4118 unsigned char *channel_id;
4119 SilcUInt32 channel_id_len;
4120 SilcBuffer client_id_list;
4121 SilcBuffer client_mode_list;
4122 unsigned char lc[4];
4123 SilcUInt32 list_count = 0;
4124 SilcUInt16 ident = silc_command_get_ident(cmd->payload);
4127 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_USERS, cmd, 1, 2);
4129 /* Get Channel ID */
4130 channel_id = silc_argument_get_arg_type(cmd->args, 1, &channel_id_len);
4132 /* Get channel name */
4133 channel_name = silc_argument_get_arg_type(cmd->args, 2, NULL);
4135 if (!channel_id && !channel_name) {
4136 silc_server_command_send_status_reply(cmd, SILC_COMMAND_USERS,
4137 SILC_STATUS_ERR_NO_CHANNEL_ID, 0);
4142 id = silc_id_payload_parse_id(channel_id, channel_id_len, NULL);
4144 silc_server_command_send_status_reply(cmd, SILC_COMMAND_USERS,
4145 SILC_STATUS_ERR_NO_CHANNEL_ID, 0);
4150 /* If we are server and we don't know about this channel we will send
4151 the command to our router. If we know about the channel then we also
4152 have the list of users already. */
4154 channel = silc_idlist_find_channel_by_id(server->local_list, id, NULL);
4156 channel = silc_idlist_find_channel_by_name(server->local_list,
4157 channel_name, NULL);
4159 if (!channel || (!server->standalone && (channel->disabled ||
4160 !channel->users_resolved))) {
4161 if (server->server_type != SILC_ROUTER && !server->standalone &&
4165 silc_command_set_ident(cmd->payload, ++server->cmd_ident);
4166 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
4168 /* Send USERS command */
4169 silc_server_packet_send(server, SILC_PRIMARY_ROUTE(server),
4170 SILC_PACKET_COMMAND, cmd->packet->flags,
4171 tmpbuf->data, tmpbuf->len, TRUE);
4173 /* Reprocess this packet after received reply */
4174 silc_server_command_pending(server, SILC_COMMAND_USERS,
4175 silc_command_get_ident(cmd->payload),
4176 silc_server_command_users,
4177 silc_server_command_dup(cmd));
4178 cmd->pending = TRUE;
4179 silc_command_set_ident(cmd->payload, ident);
4180 silc_buffer_free(tmpbuf);
4185 /* Check the global list as well. */
4187 channel = silc_idlist_find_channel_by_id(server->global_list, id, NULL);
4189 channel = silc_idlist_find_channel_by_name(server->global_list,
4190 channel_name, NULL);
4192 /* Channel really does not exist */
4193 silc_server_command_send_status_reply(cmd, SILC_COMMAND_USERS,
4194 SILC_STATUS_ERR_NO_SUCH_CHANNEL,
4200 /* If the channel is private or secret do not send anything, unless the
4201 user requesting this command is on the channel or is server */
4202 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT) {
4203 if (channel->mode & (SILC_CHANNEL_MODE_PRIVATE | SILC_CHANNEL_MODE_SECRET)
4204 && !silc_server_client_on_channel(cmd->sock->user_data, channel,
4206 silc_server_command_send_status_reply(cmd, SILC_COMMAND_USERS,
4207 SILC_STATUS_ERR_NO_SUCH_CHANNEL,
4213 /* Get the users list */
4214 if (!silc_server_get_users_on_channel(server, channel, &client_id_list,
4215 &client_mode_list, &list_count)) {
4217 client_id_list = NULL;
4218 client_mode_list = NULL;
4222 SILC_PUT32_MSB(list_count, lc);
4225 idp = silc_id_payload_encode(channel->id, SILC_ID_CHANNEL);
4226 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_USERS,
4227 SILC_STATUS_OK, 0, ident, 4,
4228 2, idp->data, idp->len,
4231 client_id_list->data : NULL,
4233 client_id_list->len : 0,
4234 5, client_mode_list ?
4235 client_mode_list->data : NULL,
4237 client_mode_list->len : 0);
4238 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
4239 packet->data, packet->len, FALSE);
4241 silc_buffer_free(idp);
4242 silc_buffer_free(packet);
4244 silc_buffer_free(client_id_list);
4245 if (client_mode_list)
4246 silc_buffer_free(client_mode_list);
4250 silc_server_command_free(cmd);
4253 /* Server side of command GETKEY. This fetches the client's public key
4254 from the server where to the client is connected. */
4256 SILC_SERVER_CMD_FUNC(getkey)
4258 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4259 SilcServer server = cmd->server;
4261 SilcClientEntry client;
4262 SilcServerEntry server_entry;
4263 SilcClientID *client_id = NULL;
4264 SilcServerID *server_id = NULL;
4265 SilcIDPayload idp = NULL;
4266 SilcUInt16 ident = silc_command_get_ident(cmd->payload);
4267 unsigned char *tmp, *pkdata;
4268 SilcUInt32 tmp_len, pklen;
4269 SilcBuffer pk = NULL;
4271 SilcPublicKey public_key;
4273 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
4275 silc_server_command_send_status_reply(cmd, SILC_COMMAND_GETKEY,
4276 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
4280 idp = silc_id_payload_parse(tmp, tmp_len);
4282 silc_server_command_send_status_reply(cmd, SILC_COMMAND_GETKEY,
4283 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
4288 id_type = silc_id_payload_get_type(idp);
4289 if (id_type == SILC_ID_CLIENT) {
4290 client_id = silc_id_payload_get_id(idp);
4292 /* If the client is not found from local list there is no chance it
4293 would be locally connected client so send the command further. */
4294 client = silc_idlist_find_client_by_id(server->local_list,
4295 client_id, TRUE, NULL);
4297 client = silc_idlist_find_client_by_id(server->global_list,
4298 client_id, TRUE, NULL);
4300 if ((!client && !cmd->pending && !server->standalone) ||
4301 (client && !client->connection && !cmd->pending &&
4302 !(client->mode & SILC_UMODE_DETACHED)) ||
4303 (client && !client->data.public_key && !cmd->pending)) {
4305 SilcUInt16 old_ident;
4306 SilcSocketConnection dest_sock;
4308 dest_sock = silc_server_get_client_route(server, NULL, 0,
4309 client_id, NULL, NULL);
4313 old_ident = silc_command_get_ident(cmd->payload);
4314 silc_command_set_ident(cmd->payload, ++server->cmd_ident);
4315 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
4317 silc_server_packet_send(server, dest_sock,
4318 SILC_PACKET_COMMAND, cmd->packet->flags,
4319 tmpbuf->data, tmpbuf->len, TRUE);
4321 /* Reprocess this packet after received reply from router */
4322 silc_server_command_pending(server, SILC_COMMAND_GETKEY,
4323 silc_command_get_ident(cmd->payload),
4324 silc_server_command_getkey,
4325 silc_server_command_dup(cmd));
4326 cmd->pending = TRUE;
4327 silc_command_set_ident(cmd->payload, old_ident);
4328 silc_buffer_free(tmpbuf);
4333 silc_server_command_send_status_reply(cmd, SILC_COMMAND_GETKEY,
4334 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID,
4339 /* The client is locally connected, just get the public key and
4340 send it back. If they key does not exist then do not send it,
4341 send just OK reply */
4342 public_key = client->data.public_key;
4347 tmp = silc_pkcs_public_key_encode(public_key, &tmp_len);
4348 pk = silc_buffer_alloc(4 + tmp_len);
4349 silc_buffer_pull_tail(pk, SILC_BUFFER_END(pk));
4350 silc_buffer_format(pk,
4351 SILC_STR_UI_SHORT(tmp_len),
4352 SILC_STR_UI_SHORT(SILC_SKE_PK_TYPE_SILC),
4353 SILC_STR_UI_XNSTRING(tmp, tmp_len),
4359 } else if (id_type == SILC_ID_SERVER) {
4360 server_id = silc_id_payload_get_id(idp);
4362 /* If the server is not found from local list there is no chance it
4363 would be locally connected server so send the command further. */
4364 server_entry = silc_idlist_find_server_by_id(server->local_list,
4365 server_id, TRUE, NULL);
4367 server_entry = silc_idlist_find_server_by_id(server->global_list,
4368 server_id, TRUE, NULL);
4370 if (server_entry != server->id_entry &&
4371 ((!server_entry && !cmd->pending && !server->standalone) ||
4372 (server_entry && !server_entry->connection && !cmd->pending &&
4373 !server->standalone) ||
4374 (server_entry && !server_entry->data.public_key && !cmd->pending &&
4375 !server->standalone))) {
4377 SilcUInt16 old_ident;
4379 old_ident = silc_command_get_ident(cmd->payload);
4380 silc_command_set_ident(cmd->payload, ++server->cmd_ident);
4381 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
4383 silc_server_packet_send(server, SILC_PRIMARY_ROUTE(server),
4384 SILC_PACKET_COMMAND, cmd->packet->flags,
4385 tmpbuf->data, tmpbuf->len, TRUE);
4387 /* Reprocess this packet after received reply from router */
4388 silc_server_command_pending(server, SILC_COMMAND_GETKEY,
4389 silc_command_get_ident(cmd->payload),
4390 silc_server_command_getkey,
4391 silc_server_command_dup(cmd));
4392 cmd->pending = TRUE;
4393 silc_command_set_ident(cmd->payload, old_ident);
4394 silc_buffer_free(tmpbuf);
4398 if (!server_entry) {
4399 silc_server_command_send_status_reply(cmd, SILC_COMMAND_GETKEY,
4400 SILC_STATUS_ERR_NO_SUCH_SERVER_ID,
4405 /* If they key does not exist then do not send it, send just OK reply */
4406 public_key = (!server_entry->data.public_key ?
4407 (server_entry == server->id_entry ? server->public_key :
4408 NULL) : server_entry->data.public_key);
4413 tmp = silc_pkcs_public_key_encode(public_key, &tmp_len);
4414 pk = silc_buffer_alloc(4 + tmp_len);
4415 silc_buffer_pull_tail(pk, SILC_BUFFER_END(pk));
4416 silc_buffer_format(pk,
4417 SILC_STR_UI_SHORT(tmp_len),
4418 SILC_STR_UI_SHORT(SILC_SKE_PK_TYPE_SILC),
4419 SILC_STR_UI_XNSTRING(tmp, tmp_len),
4429 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
4430 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_GETKEY,
4431 SILC_STATUS_OK, 0, ident,
4435 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
4436 packet->data, packet->len, FALSE);
4437 silc_buffer_free(packet);
4440 silc_buffer_free(pk);
4444 silc_id_payload_free(idp);
4445 silc_free(client_id);
4446 silc_free(server_id);
4447 silc_server_command_free(cmd);
4451 /* Private range commands, specific to this implementation */
4453 /* Server side command of CONNECT. Connects us to the specified remote
4454 server or router. */
4456 SILC_SERVER_CMD_FUNC(connect)
4458 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4459 SilcServer server = cmd->server;
4460 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
4461 unsigned char *tmp, *host;
4463 SilcUInt32 port = SILC_PORT;
4465 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT || !client)
4468 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_PRIV_CONNECT, cmd, 1, 2);
4470 /* Check whether client has the permissions. */
4471 if (!(client->mode & SILC_UMODE_SERVER_OPERATOR) &&
4472 !(client->mode & SILC_UMODE_ROUTER_OPERATOR)) {
4473 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PRIV_CONNECT,
4474 SILC_STATUS_ERR_NO_SERVER_PRIV, 0);
4478 if (server->server_type == SILC_ROUTER && !server->backup_router &&
4479 client->mode & SILC_UMODE_SERVER_OPERATOR) {
4480 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PRIV_CONNECT,
4481 SILC_STATUS_ERR_NO_ROUTER_PRIV, 0);
4485 /* Get the remote server */
4486 host = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
4488 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PRIV_CONNECT,
4489 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
4495 tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
4497 SILC_GET32_MSB(port, tmp);
4499 /* Create the connection. It is done with timeout and is async. */
4500 silc_server_create_connection(server, host, port);
4502 /* Send reply to the sender */
4503 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PRIV_CONNECT,
4507 silc_server_command_free(cmd);
4510 /* Server side command of CLOSE. Closes connection to a specified server. */
4512 SILC_SERVER_CMD_FUNC(close)
4514 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4515 SilcServer server = cmd->server;
4516 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
4517 SilcServerEntry server_entry;
4518 SilcSocketConnection sock;
4521 unsigned char *name;
4522 SilcUInt32 port = SILC_PORT;
4524 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT || !client)
4527 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_PRIV_CLOSE, cmd, 1, 2);
4529 /* Check whether client has the permissions. */
4530 if (!(client->mode & SILC_UMODE_SERVER_OPERATOR) &&
4531 !(client->mode & SILC_UMODE_ROUTER_OPERATOR)) {
4532 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PRIV_CLOSE,
4533 SILC_STATUS_ERR_NO_SERVER_PRIV,
4538 /* Get the remote server */
4539 name = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
4541 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PRIV_CLOSE,
4542 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
4548 tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
4550 SILC_GET32_MSB(port, tmp);
4552 server_entry = silc_idlist_find_server_by_conn(server->local_list,
4553 name, port, FALSE, NULL);
4555 server_entry = silc_idlist_find_server_by_conn(server->global_list,
4556 name, port, FALSE, NULL);
4557 if (!server_entry) {
4558 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PRIV_CLOSE,
4559 SILC_STATUS_ERR_NO_SERVER_ID, 0);
4563 if (server_entry == server->id_entry) {
4564 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PRIV_CLOSE,
4565 SILC_STATUS_ERR_NO_SERVER_ID, 0);
4569 /* Send reply to the sender */
4570 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PRIV_CLOSE,
4573 /* Close the connection to the server */
4574 sock = (SilcSocketConnection)server_entry->connection;
4576 /* If we shutdown primary router connection manually then don't trigger
4577 any reconnect or backup router connections, by setting the router
4579 if (server->router == server_entry) {
4580 server->id_entry->router = NULL;
4581 server->router = NULL;
4582 server->standalone = TRUE;
4584 silc_server_free_sock_user_data(server, sock, NULL);
4585 silc_server_close_connection(server, sock);
4588 silc_server_command_free(cmd);
4591 /* Server side command of SHUTDOWN. Shutdowns the server and closes all
4592 active connections. */
4594 SILC_SERVER_CMD_FUNC(shutdown)
4596 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4597 SilcServer server = cmd->server;
4598 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
4600 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT || !client)
4603 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_PRIV_SHUTDOWN, cmd, 0, 0);
4605 /* Check whether client has the permission. */
4606 if (!(client->mode & SILC_UMODE_SERVER_OPERATOR) &&
4607 !(client->mode & SILC_UMODE_ROUTER_OPERATOR)) {
4608 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PRIV_SHUTDOWN,
4609 SILC_STATUS_ERR_NO_SERVER_PRIV,
4614 /* Send reply to the sender */
4615 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PRIV_SHUTDOWN,
4618 /* Then, gracefully, or not, bring the server down. */
4619 silc_server_stop(server);
4623 silc_server_command_free(cmd);