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 || cmd->pending) {
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 = NULL;
1303 unsigned char *tmp, *comment, *auth;
1304 SilcUInt32 tmp_len, tmp_len2, auth_len;
1306 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_KILL, cmd, 1, 3);
1308 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT || !client)
1311 /* Get authentication payload if present */
1312 auth = silc_argument_get_arg_type(cmd->args, 3, &auth_len);
1315 /* Router operator killing */
1317 /* KILL command works only on router */
1318 if (server->server_type != SILC_ROUTER) {
1319 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
1320 SILC_STATUS_ERR_NO_ROUTER_PRIV, 0);
1324 /* Check whether client has the permissions. */
1325 if (!(client->mode & SILC_UMODE_ROUTER_OPERATOR)) {
1326 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
1327 SILC_STATUS_ERR_NO_ROUTER_PRIV, 0);
1332 /* Get the client ID */
1333 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
1335 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
1336 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
1340 client_id = silc_id_payload_parse_id(tmp, tmp_len, NULL);
1342 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
1343 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID,
1348 /* Get the client entry */
1349 remote_client = silc_idlist_find_client_by_id(server->local_list,
1350 client_id, TRUE, NULL);
1351 if (!remote_client) {
1352 remote_client = silc_idlist_find_client_by_id(server->global_list,
1353 client_id, TRUE, NULL);
1354 if (!remote_client) {
1355 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
1356 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID,
1363 comment = silc_argument_get_arg_type(cmd->args, 2, &tmp_len2);
1364 if (comment && tmp_len2 > 128) {
1366 comment[127] = '\0';
1369 /* If authentication data is provided then verify that killing is
1371 if (auth && auth_len) {
1372 SilcSocketConnection sock;
1374 if (!SILC_IS_LOCAL(remote_client) || !remote_client->data.public_key) {
1375 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
1376 SILC_STATUS_ERR_OPERATION_ALLOWED,
1381 /* Verify the signature */
1382 if (!silc_auth_verify_data(auth, auth_len, SILC_AUTH_PUBLIC_KEY,
1383 remote_client->data.public_key, 0,
1384 server->sha1hash, remote_client->id,
1386 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
1387 SILC_STATUS_ERR_AUTH_FAILED,
1392 /* Send reply to the sender */
1393 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
1396 /* Do normal signoff for the destination client */
1397 sock = remote_client->connection;
1398 silc_server_free_client_data(server, NULL, remote_client, TRUE,
1400 (unsigned char *)"Killed");
1402 silc_server_close_connection(server, sock);
1404 /* Router operator killing */
1406 /* Send reply to the sender */
1407 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
1410 /* Check if anyone is watching this nickname */
1411 if (server->server_type == SILC_ROUTER)
1412 silc_server_check_watcher_list(server, client, NULL,
1413 SILC_NOTIFY_TYPE_KILLED);
1415 /* Now do the killing */
1416 silc_server_kill_client(server, remote_client, comment, client->id,
1421 silc_free(client_id);
1422 silc_server_command_free(cmd);
1425 /* Server side of command INFO. This sends information about us to
1426 the client. If client requested specific server we will send the
1427 command to that server. */
1429 SILC_SERVER_CMD_FUNC(info)
1431 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
1432 SilcServer server = cmd->server;
1433 SilcBuffer packet, idp;
1436 char *dest_server, *server_info = NULL, *server_name;
1437 SilcUInt16 ident = silc_command_get_ident(cmd->payload);
1438 SilcServerEntry entry = NULL;
1439 SilcServerID *server_id = NULL;
1441 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_INFO, cmd, 0, 2);
1443 /* Get server name */
1444 dest_server = silc_argument_get_arg_type(cmd->args, 1, NULL);
1447 tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
1449 server_id = silc_id_payload_parse_id(tmp, tmp_len, NULL);
1451 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INFO,
1452 SILC_STATUS_ERR_NO_SERVER_ID, 0);
1458 /* Check whether we have this server cached */
1459 entry = silc_idlist_find_server_by_id(server->local_list,
1460 server_id, TRUE, NULL);
1462 entry = silc_idlist_find_server_by_id(server->global_list,
1463 server_id, TRUE, NULL);
1464 if (!entry && server->server_type != SILC_SERVER) {
1465 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INFO,
1466 SILC_STATUS_ERR_NO_SUCH_SERVER,
1473 /* Some buggy servers has sent request to router about themselves. */
1474 if (server->server_type != SILC_SERVER && cmd->sock->user_data == entry)
1477 if ((!dest_server && !server_id && !entry) || (entry &&
1478 entry == server->id_entry) ||
1479 (dest_server && !cmd->pending &&
1480 !strncasecmp(dest_server, server->server_name, strlen(dest_server)))) {
1481 /* Send our reply */
1482 char info_string[256];
1484 memset(info_string, 0, sizeof(info_string));
1485 snprintf(info_string, sizeof(info_string),
1486 "location: %s server: %s admin: %s <%s>",
1487 server->config->server_info->location,
1488 server->config->server_info->server_type,
1489 server->config->server_info->admin,
1490 server->config->server_info->email);
1492 server_info = info_string;
1493 entry = server->id_entry;
1495 /* Check whether we have this server cached */
1496 if (!entry && dest_server) {
1497 entry = silc_idlist_find_server_by_name(server->global_list,
1498 dest_server, TRUE, NULL);
1500 entry = silc_idlist_find_server_by_name(server->local_list,
1501 dest_server, TRUE, NULL);
1505 if (!cmd->pending &&
1506 server->server_type != SILC_SERVER && entry && !entry->server_info) {
1507 /* Send to the server */
1509 SilcUInt16 old_ident;
1511 old_ident = silc_command_get_ident(cmd->payload);
1512 silc_command_set_ident(cmd->payload, ++server->cmd_ident);
1513 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
1515 silc_server_packet_send(server, entry->connection,
1516 SILC_PACKET_COMMAND, cmd->packet->flags,
1517 tmpbuf->data, tmpbuf->len, TRUE);
1519 /* Reprocess this packet after received reply from router */
1520 silc_server_command_pending(server, SILC_COMMAND_INFO,
1521 silc_command_get_ident(cmd->payload),
1522 silc_server_command_info,
1523 silc_server_command_dup(cmd));
1524 cmd->pending = TRUE;
1525 silc_command_set_ident(cmd->payload, old_ident);
1526 silc_buffer_free(tmpbuf);
1530 if (!entry && !cmd->pending && !server->standalone) {
1531 /* Send to the primary router */
1533 SilcUInt16 old_ident;
1535 old_ident = silc_command_get_ident(cmd->payload);
1536 silc_command_set_ident(cmd->payload, ++server->cmd_ident);
1537 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
1539 silc_server_packet_send(server, SILC_PRIMARY_ROUTE(server),
1540 SILC_PACKET_COMMAND, cmd->packet->flags,
1541 tmpbuf->data, tmpbuf->len, TRUE);
1543 /* Reprocess this packet after received reply from router */
1544 silc_server_command_pending(server, SILC_COMMAND_INFO,
1545 silc_command_get_ident(cmd->payload),
1546 silc_server_command_info,
1547 silc_server_command_dup(cmd));
1548 cmd->pending = TRUE;
1549 silc_command_set_ident(cmd->payload, old_ident);
1550 silc_buffer_free(tmpbuf);
1555 silc_free(server_id);
1558 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INFO,
1559 SILC_STATUS_ERR_NO_SUCH_SERVER, 0);
1563 idp = silc_id_payload_encode(entry->id, SILC_ID_SERVER);
1565 server_info = entry->server_info;
1566 server_name = entry->server_name;
1568 /* Send the reply */
1569 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_INFO,
1570 SILC_STATUS_OK, 0, ident, 3,
1571 2, idp->data, idp->len,
1573 strlen(server_name),
1576 strlen(server_info) : 0);
1577 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
1578 packet->data, packet->len, FALSE);
1580 silc_buffer_free(packet);
1581 silc_buffer_free(idp);
1584 silc_server_command_free(cmd);
1587 /* Server side of command PING. This just replies to the ping. */
1589 SILC_SERVER_CMD_FUNC(ping)
1591 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
1592 SilcServer server = cmd->server;
1595 SilcServerID *server_id = NULL;
1597 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_PING, cmd, 1, 1);
1600 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
1602 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PING,
1603 SILC_STATUS_ERR_NO_SERVER_ID, 0);
1606 server_id = silc_id_payload_parse_id(tmp, tmp_len, NULL);
1610 if (SILC_ID_SERVER_COMPARE(server_id, server->id)) {
1611 /* Send our reply */
1612 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PING,
1615 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PING,
1616 SILC_STATUS_ERR_NO_SUCH_SERVER, 0);
1621 silc_free(server_id);
1622 silc_server_command_free(cmd);
1625 /* Server side of command STATS. */
1627 SILC_SERVER_CMD_FUNC(stats)
1629 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
1630 SilcServer server = cmd->server;
1631 SilcServerID *server_id;
1634 SilcBuffer packet, stats;
1635 SilcUInt16 ident = silc_command_get_ident(cmd->payload);
1638 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_STATS, cmd, 1, 1);
1641 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
1643 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PING,
1644 SILC_STATUS_ERR_NO_SERVER_ID, 0);
1647 server_id = silc_id_payload_parse_id(tmp, tmp_len, NULL);
1651 /* The ID must be ours */
1652 if (!SILC_ID_SERVER_COMPARE(server->id, server_id)) {
1653 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PING,
1654 SILC_STATUS_ERR_NO_SUCH_SERVER, 0);
1655 silc_free(server_id);
1658 silc_free(server_id);
1660 /* If we are router then just send everything we got. If we are normal
1661 server then we'll send this to our router to get all the latest
1662 statistical information. */
1663 if (!cmd->pending && server->server_type != SILC_ROUTER &&
1664 !server->standalone) {
1665 /* Send request to our router */
1666 SilcBuffer idp = silc_id_payload_encode(server->router->id,
1668 packet = silc_command_payload_encode_va(SILC_COMMAND_STATS,
1669 ++server->cmd_ident, 1,
1670 1, idp->data, idp->len);
1671 silc_server_packet_send(server, SILC_PRIMARY_ROUTE(server),
1672 SILC_PACKET_COMMAND, 0, packet->data,
1673 packet->len, FALSE);
1675 /* Reprocess this packet after received reply from router */
1676 silc_server_command_pending(server, SILC_COMMAND_STATS,
1678 silc_server_command_stats,
1679 silc_server_command_dup(cmd));
1680 cmd->pending = TRUE;
1681 silc_buffer_free(packet);
1682 silc_buffer_free(idp);
1686 /* Send our reply to sender */
1687 uptime = time(NULL) - server->starttime;
1689 stats = silc_buffer_alloc_size(60);
1690 silc_buffer_format(stats,
1691 SILC_STR_UI_INT(server->starttime),
1692 SILC_STR_UI_INT(uptime),
1693 SILC_STR_UI_INT(server->stat.my_clients),
1694 SILC_STR_UI_INT(server->stat.my_channels),
1695 SILC_STR_UI_INT(server->stat.my_server_ops),
1696 SILC_STR_UI_INT(server->stat.my_router_ops),
1697 SILC_STR_UI_INT(server->stat.cell_clients),
1698 SILC_STR_UI_INT(server->stat.cell_channels),
1699 SILC_STR_UI_INT(server->stat.cell_servers),
1700 SILC_STR_UI_INT(server->stat.clients),
1701 SILC_STR_UI_INT(server->stat.channels),
1702 SILC_STR_UI_INT(server->stat.servers),
1703 SILC_STR_UI_INT(server->stat.routers),
1704 SILC_STR_UI_INT(server->stat.server_ops),
1705 SILC_STR_UI_INT(server->stat.router_ops),
1708 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_STATS,
1709 SILC_STATUS_OK, 0, ident, 2,
1711 3, stats->data, stats->len);
1712 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY,
1713 0, packet->data, packet->len, FALSE);
1714 silc_buffer_free(packet);
1715 silc_buffer_free(stats);
1718 silc_server_command_free(cmd);
1721 /* Internal routine to join channel. The channel sent to this function
1722 has been either created or resolved from ID lists. This joins the sent
1723 client to the channel. */
1725 static void silc_server_command_join_channel(SilcServer server,
1726 SilcServerCommandContext cmd,
1727 SilcChannelEntry channel,
1728 SilcClientID *client_id,
1732 const unsigned char *auth,
1733 SilcUInt32 auth_len)
1735 SilcSocketConnection sock = cmd->sock;
1737 SilcUInt32 tmp_len, user_count;
1738 unsigned char *passphrase = NULL, mode[4], tmp2[4], tmp3[4];
1739 SilcClientEntry client;
1740 SilcChannelClientEntry chl;
1741 SilcBuffer reply, chidp, clidp, keyp = NULL, user_list, mode_list;
1742 SilcUInt16 ident = silc_command_get_ident(cmd->payload);
1743 char check[512], check2[512];
1744 bool founder = FALSE;
1746 SilcBuffer fkey = NULL;
1749 SILC_LOG_DEBUG(("Joining client to channel"));
1754 /* Get the client entry */
1755 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT) {
1756 client = (SilcClientEntry)sock->user_data;
1760 client = silc_server_query_client(server, client_id, FALSE,
1763 if (!resolve || cmd->pending) {
1764 silc_server_command_send_status_reply(
1765 cmd, SILC_COMMAND_JOIN,
1766 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS, 0);
1770 /* The client info is being resolved. Reprocess this packet after
1771 receiving the reply to the query. */
1772 silc_server_command_pending(server, SILC_COMMAND_WHOIS,
1774 silc_server_command_join,
1775 silc_server_command_dup(cmd));
1776 cmd->pending = TRUE;
1780 if (auth && auth_len && !client->data.public_key) {
1781 if (cmd->pending == 2)
1784 /* We must retrieve the detached client's public key by sending
1785 GETKEY command. Reprocess this packet after receiving the key */
1786 clidp = silc_id_payload_encode(client_id, SILC_ID_CLIENT);
1787 silc_server_send_command(server, cmd->sock,
1788 SILC_COMMAND_GETKEY, ++server->cmd_ident,
1789 1, 1, clidp->data, clidp->len);
1790 silc_buffer_free(clidp);
1791 silc_server_command_pending(server, SILC_COMMAND_GETKEY,
1793 silc_server_command_join,
1794 silc_server_command_dup(cmd));
1799 cmd->pending = FALSE;
1803 * Check founder auth payload if provided. If client can gain founder
1804 * privileges it can override various conditions on joining the channel,
1805 * and can have directly the founder mode set on the channel.
1807 if (auth && auth_len && channel->mode & SILC_CHANNEL_MODE_FOUNDER_AUTH) {
1808 SilcIDListData idata = (SilcIDListData)client;
1809 SilcChannelClientEntry chl2;
1810 SilcHashTableList htl;
1812 if (channel->founder_key && idata->public_key &&
1813 silc_pkcs_public_key_compare(channel->founder_key,
1814 idata->public_key)) {
1815 /* Check whether the client is to become founder */
1816 if (silc_auth_verify_data(auth, auth_len, SILC_AUTH_PUBLIC_KEY,
1817 channel->founder_key, 0, server->sha1hash,
1818 client->id, SILC_ID_CLIENT)) {
1820 /* There cannot be anyone else as founder on the channel now. This
1821 client is definitely the founder due to this authentication */
1822 silc_hash_table_list(channel->user_list, &htl);
1823 while (silc_hash_table_get(&htl, NULL, (void *)&chl2))
1824 if (chl2->mode & SILC_CHANNEL_UMODE_CHANFO) {
1825 chl2->mode &= ~SILC_CHANNEL_UMODE_CHANFO;
1826 silc_server_force_cumode_change(server, NULL, channel, chl2,
1830 silc_hash_table_list_reset(&htl);
1832 umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
1839 * Check channel modes
1843 memset(check, 0, sizeof(check));
1844 memset(check2, 0, sizeof(check2));
1845 silc_strncat(check, sizeof(check),
1846 client->nickname, strlen(client->nickname));
1847 silc_strncat(check, sizeof(check), "!", 1);
1848 silc_strncat(check, sizeof(check),
1849 client->username, strlen(client->username));
1850 if (!strchr(client->username, '@')) {
1851 silc_strncat(check, sizeof(check), "@", 1);
1852 silc_strncat(check, sizeof(check),
1853 cmd->sock->hostname, strlen(cmd->sock->hostname));
1856 silc_strncat(check2, sizeof(check2),
1857 client->nickname, strlen(client->nickname));
1858 if (!strchr(client->nickname, '@')) {
1859 silc_strncat(check2, sizeof(check2), "@", 1);
1860 silc_strncat(check2, sizeof(check2),
1861 server->server_name, strlen(server->server_name));
1863 silc_strncat(check2, sizeof(check2), "!", 1);
1864 silc_strncat(check2, sizeof(check2),
1865 client->username, strlen(client->username));
1866 if (!strchr(client->username, '@')) {
1867 silc_strncat(check2, sizeof(check2), "@", 1);
1868 silc_strncat(check2, sizeof(check2),
1869 cmd->sock->hostname, strlen(cmd->sock->hostname));
1872 /* Check invite list if channel is invite-only channel */
1873 if (channel->mode & SILC_CHANNEL_MODE_INVITE) {
1874 if (!channel->invite_list ||
1875 (!silc_string_match(channel->invite_list, check) &&
1876 !silc_string_match(channel->invite_list, check2))) {
1877 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
1878 SILC_STATUS_ERR_NOT_INVITED, 0);
1883 /* Check ban list if it exists. If the client's nickname, server,
1884 username and/or hostname is in the ban list the access to the
1885 channel is denied. */
1886 if (channel->ban_list) {
1887 if (silc_string_match(channel->ban_list, check) ||
1888 silc_string_match(channel->ban_list, check2)) {
1889 silc_server_command_send_status_reply(
1890 cmd, SILC_COMMAND_JOIN,
1891 SILC_STATUS_ERR_BANNED_FROM_CHANNEL, 0);
1896 /* Check user count limit if set. */
1897 if (channel->mode & SILC_CHANNEL_MODE_ULIMIT) {
1898 if (silc_hash_table_count(channel->user_list) + 1 >
1899 channel->user_limit) {
1900 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
1901 SILC_STATUS_ERR_CHANNEL_IS_FULL,
1908 /* Check the channel passphrase if set. */
1909 if (channel->mode & SILC_CHANNEL_MODE_PASSPHRASE) {
1910 /* Get passphrase */
1911 tmp = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
1913 passphrase = silc_memdup(tmp, tmp_len);
1915 if (!passphrase || !channel->passphrase ||
1916 memcmp(passphrase, channel->passphrase, strlen(channel->passphrase))) {
1917 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
1918 SILC_STATUS_ERR_BAD_PASSWORD, 0);
1924 * Client is allowed to join to the channel. Make it happen.
1927 /* Check whether the client already is on the channel */
1928 if (silc_server_client_on_channel(client, channel, NULL)) {
1929 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
1930 SILC_STATUS_ERR_USER_ON_CHANNEL, 0);
1934 /* Generate new channel key as protocol dictates */
1936 if (!silc_server_create_channel_key(server, channel, 0))
1939 /* Send the channel key. This is broadcasted to the channel but is not
1940 sent to the client who is joining to the channel. */
1941 if (!(channel->mode & SILC_CHANNEL_MODE_PRIVKEY))
1942 silc_server_send_channel_key(server, NULL, channel,
1943 server->server_type == SILC_ROUTER ?
1944 FALSE : !server->standalone);
1947 /* Join the client to the channel by adding it to channel's user list.
1948 Add also the channel to client entry's channels list for fast cross-
1950 chl = silc_calloc(1, sizeof(*chl));
1952 chl->client = client;
1953 chl->channel = channel;
1954 silc_hash_table_add(channel->user_list, client, chl);
1955 silc_hash_table_add(client->channels, channel, chl);
1956 channel->user_count++;
1957 channel->disabled = FALSE;
1959 /* Get users on the channel */
1960 silc_server_get_users_on_channel(server, channel, &user_list, &mode_list,
1963 /* Encode Client ID Payload of the original client who wants to join */
1964 clidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
1966 /* Encode command reply packet */
1967 chidp = silc_id_payload_encode(channel->id, SILC_ID_CHANNEL);
1968 SILC_PUT32_MSB(channel->mode, mode);
1969 SILC_PUT32_MSB(created, tmp2);
1970 SILC_PUT32_MSB(user_count, tmp3);
1972 if (!(channel->mode & SILC_CHANNEL_MODE_PRIVKEY)) {
1973 tmp = silc_id_id2str(channel->id, SILC_ID_CHANNEL);
1974 cipher = silc_cipher_get_name(channel->channel_key);
1975 keyp = silc_channel_key_payload_encode(silc_id_get_len(channel->id,
1978 strlen(cipher), cipher,
1979 channel->key_len / 8, channel->key);
1983 if (channel->founder_key)
1984 fkey = silc_pkcs_public_key_payload_encode(channel->founder_key);
1987 silc_command_reply_payload_encode_va(SILC_COMMAND_JOIN,
1988 SILC_STATUS_OK, 0, ident, 14,
1989 2, channel->channel_name,
1990 strlen(channel->channel_name),
1991 3, chidp->data, chidp->len,
1992 4, clidp->data, clidp->len,
1995 7, keyp ? keyp->data : NULL,
1996 keyp ? keyp->len : 0,
1997 8, channel->ban_list,
1999 strlen(channel->ban_list) : 0,
2000 9, channel->invite_list,
2001 channel->invite_list ?
2002 strlen(channel->invite_list) : 0,
2005 strlen(channel->topic) : 0,
2006 11, silc_hmac_get_name(channel->hmac),
2007 strlen(silc_hmac_get_name(channel->
2010 13, user_list->data, user_list->len,
2011 14, mode_list->data,
2013 15, fkey ? fkey->data : NULL,
2014 fkey ? fkey->len : 0);
2016 /* Send command reply */
2017 silc_server_packet_send(server, sock, SILC_PACKET_COMMAND_REPLY, 0,
2018 reply->data, reply->len, FALSE);
2020 /* Send JOIN notify to locally connected clients on the channel. If
2021 we are normal server then router will send or have sent JOIN notify
2022 already. However since we've added the client already to our channel
2023 we'll ignore it (in packet_receive.c) so we must send it here. If
2024 we are router then this will send it to local clients and local
2026 SILC_LOG_DEBUG(("Send JOIN notify to channel"));
2027 silc_server_send_notify_to_channel(server, NULL, channel, FALSE,
2028 SILC_NOTIFY_TYPE_JOIN, 2,
2029 clidp->data, clidp->len,
2030 chidp->data, chidp->len);
2032 /* Update statistics */
2033 server->stat.my_chanclients++;
2034 if (server->server_type == SILC_ROUTER) {
2035 server->stat.cell_chanclients++;
2036 server->stat.chanclients++;
2039 if (!cmd->pending) {
2040 /* Send JOIN notify packet to our primary router */
2041 silc_server_send_notify_join(server, SILC_PRIMARY_ROUTE(server),
2042 SILC_BROADCAST(server), channel, client->id);
2045 /* Distribute the channel key to all backup routers. */
2046 silc_server_backup_send(server, NULL, SILC_PACKET_CHANNEL_KEY, 0,
2047 keyp->data, keyp->len, FALSE, TRUE);
2049 /* If client became founder by providing correct founder auth data
2050 notify the mode change to the channel. */
2052 SILC_PUT32_MSB(chl->mode, mode);
2053 SILC_LOG_DEBUG(("Send CUMODE_CHANGE notify to channel"));
2054 silc_server_send_notify_to_channel(server, NULL, channel, FALSE,
2055 SILC_NOTIFY_TYPE_CUMODE_CHANGE, 4,
2056 clidp->data, clidp->len,
2057 mode, 4, clidp->data, clidp->len,
2058 fkey ? fkey->data : NULL,
2059 fkey ? fkey->len : 0);
2063 /* Set CUMODE notify type to network */
2065 silc_server_send_notify_cumode(server, SILC_PRIMARY_ROUTE(server),
2066 SILC_BROADCAST(server), channel,
2067 chl->mode, client->id, SILC_ID_CLIENT,
2068 client->id, channel->founder_key);
2070 silc_buffer_free(reply);
2071 silc_buffer_free(clidp);
2072 silc_buffer_free(chidp);
2073 silc_buffer_free(keyp);
2074 silc_buffer_free(user_list);
2075 silc_buffer_free(mode_list);
2076 silc_buffer_free(fkey);
2079 silc_free(passphrase);
2082 /* Server side of command JOIN. Joins client into requested channel. If
2083 the channel does not exist it will be created. */
2085 SILC_SERVER_CMD_FUNC(join)
2087 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2088 SilcServer server = cmd->server;
2089 unsigned char *auth;
2090 SilcUInt32 tmp_len, auth_len;
2091 char *tmp, *channel_name = NULL, *cipher, *hmac;
2092 SilcChannelEntry channel;
2093 SilcUInt32 umode = 0;
2094 bool created = FALSE, create_key = TRUE;
2095 SilcClientID *client_id;
2097 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_JOIN, cmd, 2, 6);
2099 /* Get channel name */
2100 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
2102 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2103 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
2110 channel_name[255] = '\0';
2112 if (silc_server_name_bad_chars(channel_name, tmp_len) == TRUE) {
2113 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2114 SILC_STATUS_ERR_BAD_CHANNEL, 0);
2118 /* Get Client ID of the client who is joining to the channel */
2119 tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
2121 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2122 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
2126 client_id = silc_id_payload_parse_id(tmp, tmp_len, NULL);
2128 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2129 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
2134 /* Get cipher, hmac name and auth payload */
2135 cipher = silc_argument_get_arg_type(cmd->args, 4, NULL);
2136 hmac = silc_argument_get_arg_type(cmd->args, 5, NULL);
2137 auth = silc_argument_get_arg_type(cmd->args, 6, &auth_len);
2139 /* See if the channel exists */
2140 channel = silc_idlist_find_channel_by_name(server->local_list,
2141 channel_name, NULL);
2143 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT) {
2144 SilcClientEntry entry = (SilcClientEntry)cmd->sock->user_data;
2146 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2147 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
2152 silc_free(client_id);
2153 client_id = silc_id_dup(entry->id, SILC_ID_CLIENT);
2156 (channel->disabled && server->server_type != SILC_ROUTER)) {
2157 /* Channel not found or not valid */
2159 /* If we are standalone server we don't have a router, we just create
2160 the channel by ourselves (unless it existed). */
2161 if (server->standalone) {
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,
2170 silc_free(client_id);
2174 umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
2180 /* The channel does not exist on our server. If we are normal server
2181 we will send JOIN command to our router which will handle the
2182 joining procedure (either creates the channel if it doesn't exist
2183 or joins the client to it). */
2184 if (server->server_type != SILC_ROUTER) {
2186 SilcUInt16 old_ident;
2188 /* If this is pending command callback then we've resolved
2189 it and it didn't work, return since we've notified the
2190 client already in the command reply callback. */
2192 silc_free(client_id);
2196 old_ident = silc_command_get_ident(cmd->payload);
2197 silc_command_set_ident(cmd->payload, ++server->cmd_ident);
2198 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
2200 /* Send JOIN command to our router */
2201 silc_server_packet_send(server, (SilcSocketConnection)
2202 SILC_PRIMARY_ROUTE(server),
2203 SILC_PACKET_COMMAND, cmd->packet->flags,
2204 tmpbuf->data, tmpbuf->len, TRUE);
2206 /* Reprocess this packet after received reply from router */
2207 silc_server_command_pending(server, SILC_COMMAND_JOIN,
2208 silc_command_get_ident(cmd->payload),
2209 silc_server_command_join,
2210 silc_server_command_dup(cmd));
2211 cmd->pending = TRUE;
2212 silc_command_set_ident(cmd->payload, old_ident);
2213 silc_buffer_free(tmpbuf);
2214 silc_free(client_id);
2218 /* We are router and the channel does not seem exist so we will check
2219 our global list as well for the channel. */
2220 channel = silc_idlist_find_channel_by_name(server->global_list,
2221 channel_name, NULL);
2223 /* Channel really does not exist, create it */
2224 channel = silc_server_create_new_channel(server, server->id, cipher,
2225 hmac, channel_name, TRUE);
2227 silc_server_command_send_status_reply(
2228 cmd, SILC_COMMAND_JOIN,
2229 SILC_STATUS_ERR_UNKNOWN_ALGORITHM, 0);
2230 silc_free(client_id);
2234 umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
2242 /* Channel not found */
2244 /* If the command came from router and we are normal server then
2245 something went wrong with the joining as the channel was not found.
2246 We can't do anything else but ignore this. */
2247 if (cmd->sock->type == SILC_SOCKET_TYPE_ROUTER ||
2248 server->server_type != SILC_ROUTER) {
2249 silc_free(client_id);
2253 /* We are router and the channel does not seem exist so we will check
2254 our global list as well for the channel. */
2255 channel = silc_idlist_find_channel_by_name(server->global_list,
2256 channel_name, NULL);
2258 /* Channel really does not exist, create it */
2259 channel = silc_server_create_new_channel(server, server->id, cipher,
2260 hmac, channel_name, TRUE);
2262 silc_server_command_send_status_reply(
2263 cmd, SILC_COMMAND_JOIN,
2264 SILC_STATUS_ERR_UNKNOWN_ALGORITHM, 0);
2265 silc_free(client_id);
2269 umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
2276 /* Check whether the channel was created by our router */
2277 if (cmd->pending && context2) {
2278 SilcServerCommandReplyContext reply = context2;
2280 if (silc_command_get(reply->payload) == SILC_COMMAND_JOIN) {
2281 tmp = silc_argument_get_arg_type(reply->args, 6, NULL);
2282 SILC_GET32_MSB(created, tmp);
2283 if (silc_argument_get_arg_type(reply->args, 7, NULL))
2284 create_key = FALSE; /* Router returned the key already */
2286 if (silc_command_get_status(reply->payload, NULL, NULL) &&
2287 channel->mode & SILC_CHANNEL_MODE_PASSPHRASE) {
2288 /* Save channel passphrase, if user provided it successfully */
2291 pa = silc_argument_get_arg_type(cmd->args, 3, &pa_len);
2293 silc_free(channel->passphrase);
2294 channel->passphrase = silc_memdup(pa, pa_len);
2299 if (silc_command_get(reply->payload) == SILC_COMMAND_WHOIS &&
2300 !channel->disabled && !silc_hash_table_count(channel->user_list))
2304 /* If the channel does not have global users and is also empty the client
2305 will be the channel founder and operator. */
2306 if (!channel->disabled &&
2307 !channel->global_users && !silc_hash_table_count(channel->user_list))
2308 umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
2310 /* Join to the channel */
2311 silc_server_command_join_channel(server, cmd, channel, client_id,
2312 created, create_key, umode,
2315 silc_free(client_id);
2318 silc_server_command_free(cmd);
2321 /* Server side of command MOTD. Sends server's current "message of the
2322 day" to the client. */
2324 SILC_SERVER_CMD_FUNC(motd)
2326 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2327 SilcServer server = cmd->server;
2328 SilcBuffer packet, idp;
2329 char *motd, *dest_server;
2330 SilcUInt32 motd_len;
2331 SilcUInt16 ident = silc_command_get_ident(cmd->payload);
2333 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_MOTD, cmd, 1, 1);
2335 /* Get server name */
2336 dest_server = silc_argument_get_arg_type(cmd->args, 1, NULL);
2338 silc_server_command_send_status_reply(cmd, SILC_COMMAND_MOTD,
2339 SILC_STATUS_ERR_NO_SUCH_SERVER, 0);
2343 if (!strncasecmp(dest_server, server->server_name, strlen(dest_server))) {
2346 idp = silc_id_payload_encode(server->id_entry->id, SILC_ID_SERVER);
2348 if (server->config && server->config->server_info &&
2349 server->config->server_info->motd_file) {
2351 motd = silc_file_readfile(server->config->server_info->motd_file,
2357 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_MOTD,
2364 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_MOTD,
2370 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
2371 packet->data, packet->len, FALSE);
2372 silc_buffer_free(packet);
2373 silc_buffer_free(idp);
2375 SilcServerEntry entry;
2377 /* Check whether we have this server cached */
2378 entry = silc_idlist_find_server_by_name(server->global_list,
2379 dest_server, TRUE, NULL);
2381 entry = silc_idlist_find_server_by_name(server->local_list,
2382 dest_server, TRUE, NULL);
2385 if (server->server_type != SILC_SERVER && !cmd->pending &&
2386 entry && !entry->motd) {
2387 /* Send to the server */
2389 SilcUInt16 old_ident;
2391 old_ident = silc_command_get_ident(cmd->payload);
2392 silc_command_set_ident(cmd->payload, ++server->cmd_ident);
2393 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
2395 silc_server_packet_send(server, entry->connection,
2396 SILC_PACKET_COMMAND, cmd->packet->flags,
2397 tmpbuf->data, tmpbuf->len, TRUE);
2399 /* Reprocess this packet after received reply from router */
2400 silc_server_command_pending(server, SILC_COMMAND_MOTD,
2401 silc_command_get_ident(cmd->payload),
2402 silc_server_command_motd,
2403 silc_server_command_dup(cmd));
2404 cmd->pending = TRUE;
2405 silc_command_set_ident(cmd->payload, old_ident);
2406 silc_buffer_free(tmpbuf);
2410 if (!entry && !cmd->pending && !server->standalone) {
2411 /* Send to the primary router */
2413 SilcUInt16 old_ident;
2415 old_ident = silc_command_get_ident(cmd->payload);
2416 silc_command_set_ident(cmd->payload, ++server->cmd_ident);
2417 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
2419 silc_server_packet_send(server, SILC_PRIMARY_ROUTE(server),
2420 SILC_PACKET_COMMAND, cmd->packet->flags,
2421 tmpbuf->data, tmpbuf->len, TRUE);
2423 /* Reprocess this packet after received reply from router */
2424 silc_server_command_pending(server, SILC_COMMAND_MOTD,
2425 silc_command_get_ident(cmd->payload),
2426 silc_server_command_motd,
2427 silc_server_command_dup(cmd));
2428 cmd->pending = TRUE;
2429 silc_command_set_ident(cmd->payload, old_ident);
2430 silc_buffer_free(tmpbuf);
2435 silc_server_command_send_status_reply(cmd, SILC_COMMAND_MOTD,
2436 SILC_STATUS_ERR_NO_SUCH_SERVER, 0);
2440 idp = silc_id_payload_encode(server->id_entry->id, SILC_ID_SERVER);
2441 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_MOTD,
2442 SILC_STATUS_OK, 0, ident, 2,
2446 strlen(entry->motd) : 0);
2447 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
2448 packet->data, packet->len, FALSE);
2449 silc_buffer_free(packet);
2450 silc_buffer_free(idp);
2454 silc_server_command_free(cmd);
2457 /* Server side of command UMODE. Client can use this command to set/unset
2458 user mode. Client actually cannot set itself to be as server/router
2459 operator so this can be used only to unset the modes. */
2461 SILC_SERVER_CMD_FUNC(umode)
2463 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2464 SilcServer server = cmd->server;
2465 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
2467 unsigned char *tmp_mask, m[4];
2468 SilcUInt32 mask = 0;
2469 SilcUInt16 ident = silc_command_get_ident(cmd->payload);
2470 bool set_mask = FALSE;
2472 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT || !client)
2475 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_UMODE, cmd, 1, 2);
2477 /* Get the client's mode mask */
2478 tmp_mask = silc_argument_get_arg_type(cmd->args, 2, NULL);
2480 SILC_GET32_MSB(mask, tmp_mask);
2485 /* Check that mode changing is allowed. */
2486 if (!silc_server_check_umode_rights(server, client, mask)) {
2487 silc_server_command_send_status_reply(cmd, SILC_COMMAND_UMODE,
2488 SILC_STATUS_ERR_PERM_DENIED, 0);
2492 /* Anonymous mode cannot be set by client */
2493 if (mask & SILC_UMODE_ANONYMOUS) {
2494 if (!(client->mode & SILC_UMODE_ANONYMOUS)) {
2495 silc_server_command_send_status_reply(cmd, SILC_COMMAND_UMODE,
2496 SILC_STATUS_ERR_PERM_DENIED, 0);
2500 if (client->mode & SILC_UMODE_ANONYMOUS) {
2501 silc_server_command_send_status_reply(cmd, SILC_COMMAND_UMODE,
2502 SILC_STATUS_ERR_PERM_DENIED, 0);
2507 /* Update statistics */
2508 if (mask & SILC_UMODE_GONE) {
2509 if (!(client->mode & SILC_UMODE_GONE))
2510 server->stat.my_aways++;
2512 if (client->mode & SILC_UMODE_GONE)
2513 server->stat.my_aways--;
2516 /* Change the mode */
2517 client->mode = mask;
2519 /* Send UMODE change to primary router */
2520 silc_server_send_notify_umode(server, SILC_PRIMARY_ROUTE(server),
2521 SILC_BROADCAST(server), client->id,
2524 /* Check if anyone is watching this nickname */
2525 if (server->server_type == SILC_ROUTER)
2526 silc_server_check_watcher_list(server, client, NULL,
2527 SILC_NOTIFY_TYPE_UMODE_CHANGE);
2530 /* Send command reply to sender */
2531 SILC_PUT32_MSB(client->mode, m);
2532 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_UMODE,
2533 SILC_STATUS_OK, 0, ident, 1,
2535 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
2536 packet->data, packet->len, FALSE);
2537 silc_buffer_free(packet);
2540 silc_server_command_free(cmd);
2543 /* Server side command of CMODE. Changes channel mode */
2545 SILC_SERVER_CMD_FUNC(cmode)
2547 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2548 SilcServer server = cmd->server;
2549 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
2550 SilcIDListData idata = (SilcIDListData)client;
2551 SilcChannelID *channel_id = NULL;
2552 SilcChannelEntry channel;
2553 SilcChannelClientEntry chl;
2554 SilcBuffer packet, cidp;
2555 unsigned char *tmp, *tmp_id, *tmp_mask;
2556 char *cipher = NULL, *hmac = NULL, *passphrase = NULL;
2557 SilcUInt32 mode_mask = 0, old_mask = 0, tmp_len, tmp_len2;
2558 SilcUInt16 ident = silc_command_get_ident(cmd->payload);
2559 bool set_mask = FALSE;
2560 SilcPublicKey founder_key = NULL;
2561 SilcBuffer fkey = NULL;
2564 silc_server_command_free(cmd);
2568 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_CMODE, cmd, 1, 7);
2570 /* Get Channel ID */
2571 tmp_id = silc_argument_get_arg_type(cmd->args, 1, &tmp_len2);
2573 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2574 SILC_STATUS_ERR_NO_CHANNEL_ID, 0);
2575 silc_server_command_free(cmd);
2578 channel_id = silc_id_payload_parse_id(tmp_id, tmp_len2, NULL);
2580 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2581 SILC_STATUS_ERR_NO_CHANNEL_ID, 0);
2582 silc_server_command_free(cmd);
2586 /* Get channel entry */
2587 channel = silc_idlist_find_channel_by_id(server->local_list,
2590 channel = silc_idlist_find_channel_by_id(server->global_list,
2593 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2594 SILC_STATUS_ERR_NO_SUCH_CHANNEL,
2596 silc_free(channel_id);
2597 silc_server_command_free(cmd);
2601 old_mask = channel->mode;
2603 /* Get the channel mode mask */
2604 tmp_mask = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
2606 SILC_GET32_MSB(mode_mask, tmp_mask);
2610 /* Check whether this client is on the channel */
2611 if (!silc_server_client_on_channel(client, channel, &chl)) {
2612 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2613 SILC_STATUS_ERR_NOT_ON_CHANNEL, 0);
2617 /* Check that client has rights to change any requested channel modes */
2618 if (set_mask && !silc_server_check_cmode_rights(server, channel, chl,
2620 SILC_LOG_DEBUG(("Client does not have rights to change mode"));
2621 silc_server_command_send_status_reply(
2622 cmd, SILC_COMMAND_CMODE,
2623 (!(chl->mode & SILC_CHANNEL_UMODE_CHANOP) ?
2624 SILC_STATUS_ERR_NO_CHANNEL_PRIV :
2625 SILC_STATUS_ERR_NO_CHANNEL_FOPRIV), 0);
2629 /* If mode mask was not sent as argument then merely return the current
2630 mode mask to the sender. */
2633 SILC_PUT32_MSB(channel->mode, m);
2634 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_CMODE,
2635 SILC_STATUS_OK, 0, ident, 2,
2636 2, tmp_id, tmp_len2,
2638 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
2639 packet->data, packet->len, FALSE);
2640 silc_buffer_free(packet);
2645 * Check the modes. Modes that requires nothing special operation are
2649 if (mode_mask & SILC_CHANNEL_MODE_PRIVKEY) {
2650 /* Channel uses private keys to protect traffic. Client(s) has set the
2651 key locally they want to use, server does not know that key. */
2652 /* Nothing interesting to do here */
2654 if (channel->mode & SILC_CHANNEL_MODE_PRIVKEY) {
2655 /* The mode is removed and we need to generate and distribute
2656 new channel key. Clients are not using private channel keys
2657 anymore after this. */
2659 /* Re-generate channel key */
2660 if (!silc_server_create_channel_key(server, channel, 0))
2663 /* Send the channel key. This sends it to our local clients and if
2664 we are normal server to our router as well. */
2665 silc_server_send_channel_key(server, NULL, channel,
2666 server->server_type == SILC_ROUTER ?
2667 FALSE : !server->standalone);
2669 cipher = (char *)silc_cipher_get_name(channel->channel_key);
2670 hmac = (char *)silc_hmac_get_name(channel->hmac);
2674 if (mode_mask & SILC_CHANNEL_MODE_ULIMIT) {
2675 /* User limit is set on channel */
2676 SilcUInt32 user_limit;
2678 /* Get user limit */
2679 tmp = silc_argument_get_arg_type(cmd->args, 3, NULL);
2681 if (!(channel->mode & SILC_CHANNEL_MODE_ULIMIT)) {
2682 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2683 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS, 0);
2687 SILC_GET32_MSB(user_limit, tmp);
2688 channel->user_limit = user_limit;
2691 if (channel->mode & SILC_CHANNEL_MODE_ULIMIT)
2692 /* User limit mode is unset. Remove user limit */
2693 channel->user_limit = 0;
2696 if (mode_mask & SILC_CHANNEL_MODE_PASSPHRASE) {
2697 if (!(channel->mode & SILC_CHANNEL_MODE_PASSPHRASE)) {
2698 /* Passphrase has been set to channel */
2700 /* Get the passphrase */
2701 tmp = silc_argument_get_arg_type(cmd->args, 4, NULL);
2703 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2704 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS, 0);
2708 /* Save the passphrase */
2709 passphrase = channel->passphrase = silc_memdup(tmp, strlen(tmp));
2712 if (channel->mode & SILC_CHANNEL_MODE_PASSPHRASE) {
2713 /* Passphrase mode is unset. remove the passphrase */
2714 silc_free(channel->passphrase);
2715 channel->passphrase = NULL;
2719 if (mode_mask & SILC_CHANNEL_MODE_CIPHER) {
2720 if (!(channel->mode & SILC_CHANNEL_MODE_CIPHER)) {
2721 /* Cipher to use protect the traffic */
2722 SilcCipher newkey, oldkey;
2725 cipher = silc_argument_get_arg_type(cmd->args, 5, NULL);
2727 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2728 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS, 0);
2732 /* Delete old cipher and allocate the new one */
2733 if (!silc_cipher_alloc(cipher, &newkey)) {
2734 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2735 SILC_STATUS_ERR_UNKNOWN_ALGORITHM, 0);
2739 oldkey = channel->channel_key;
2740 channel->channel_key = newkey;
2742 /* Re-generate channel key */
2743 if (!silc_server_create_channel_key(server, channel, 0)) {
2744 /* We don't have new key, revert to old one */
2745 channel->channel_key = oldkey;
2749 /* Remove old channel key for good */
2750 silc_cipher_free(oldkey);
2752 /* Send the channel key. This sends it to our local clients and if
2753 we are normal server to our router as well. */
2754 silc_server_send_channel_key(server, NULL, channel,
2755 server->server_type == SILC_ROUTER ?
2756 FALSE : !server->standalone);
2759 if (channel->mode & SILC_CHANNEL_MODE_CIPHER) {
2760 /* Cipher mode is unset. Remove the cipher and revert back to
2762 SilcCipher newkey, oldkey;
2763 cipher = channel->cipher;
2765 /* Delete old cipher and allocate default one */
2766 if (!silc_cipher_alloc(cipher ? cipher : SILC_DEFAULT_CIPHER, &newkey)) {
2767 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2768 SILC_STATUS_ERR_UNKNOWN_ALGORITHM, 0);
2772 oldkey = channel->channel_key;
2773 channel->channel_key = newkey;
2775 /* Re-generate channel key */
2776 if (!silc_server_create_channel_key(server, channel, 0)) {
2777 /* We don't have new key, revert to old one */
2778 channel->channel_key = oldkey;
2782 /* Remove old channel key for good */
2783 silc_cipher_free(oldkey);
2785 /* Send the channel key. This sends it to our local clients and if
2786 we are normal server to our router as well. */
2787 silc_server_send_channel_key(server, NULL, channel,
2788 server->server_type == SILC_ROUTER ?
2789 FALSE : !server->standalone);
2793 if (mode_mask & SILC_CHANNEL_MODE_HMAC) {
2794 if (!(channel->mode & SILC_CHANNEL_MODE_HMAC)) {
2795 /* HMAC to use protect the traffic */
2796 unsigned char hash[32];
2800 hmac = silc_argument_get_arg_type(cmd->args, 6, NULL);
2802 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2803 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS, 0);
2807 /* Delete old hmac and allocate the new one */
2808 if (!silc_hmac_alloc(hmac, NULL, &newhmac)) {
2809 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2810 SILC_STATUS_ERR_UNKNOWN_ALGORITHM, 0);
2814 silc_hmac_free(channel->hmac);
2815 channel->hmac = newhmac;
2817 /* Set the HMAC key out of current channel key. The client must do
2819 silc_hash_make(silc_hmac_get_hash(channel->hmac), channel->key,
2820 channel->key_len / 8, hash);
2821 silc_hmac_set_key(channel->hmac, hash,
2822 silc_hash_len(silc_hmac_get_hash(channel->hmac)));
2823 memset(hash, 0, sizeof(hash));
2826 if (channel->mode & SILC_CHANNEL_MODE_HMAC) {
2827 /* Hmac mode is unset. Remove the hmac and revert back to
2830 unsigned char hash[32];
2831 hmac = channel->hmac_name;
2833 /* Delete old hmac and allocate default one */
2834 silc_hmac_free(channel->hmac);
2835 if (!silc_hmac_alloc(hmac ? hmac : SILC_DEFAULT_HMAC, NULL, &newhmac)) {
2836 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2837 SILC_STATUS_ERR_UNKNOWN_ALGORITHM, 0);
2841 silc_hmac_free(channel->hmac);
2842 channel->hmac = newhmac;
2844 /* Set the HMAC key out of current channel key. The client must do
2846 silc_hash_make(silc_hmac_get_hash(channel->hmac), channel->key,
2847 channel->key_len / 8,
2849 silc_hmac_set_key(channel->hmac, hash,
2850 silc_hash_len(silc_hmac_get_hash(channel->hmac)));
2851 memset(hash, 0, sizeof(hash));
2855 if (mode_mask & SILC_CHANNEL_MODE_FOUNDER_AUTH) {
2856 if (chl->mode & SILC_CHANNEL_UMODE_CHANFO) {
2857 if (!(channel->mode & SILC_CHANNEL_MODE_FOUNDER_AUTH)) {
2858 /* Set the founder authentication */
2859 tmp = silc_argument_get_arg_type(cmd->args, 7, &tmp_len);
2861 silc_server_command_send_status_reply(
2862 cmd, SILC_COMMAND_CMODE,
2863 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS, 0);
2867 /* Verify the payload before setting the mode */
2868 if (!silc_auth_verify_data(tmp, tmp_len, SILC_AUTH_PUBLIC_KEY,
2869 idata->public_key, 0, server->sha1hash,
2870 client->id, SILC_ID_CLIENT)) {
2871 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2872 SILC_STATUS_ERR_AUTH_FAILED,
2877 /* Save the public key */
2878 channel->founder_key = silc_pkcs_public_key_copy(idata->public_key);
2879 if (!channel->founder_key) {
2880 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2881 SILC_STATUS_ERR_AUTH_FAILED,
2886 founder_key = channel->founder_key;
2887 fkey = silc_pkcs_public_key_payload_encode(founder_key);
2889 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2890 SILC_STATUS_ERR_AUTH_FAILED,
2892 silc_pkcs_public_key_free(channel->founder_key);
2893 channel->founder_key = NULL;
2899 if (chl->mode & SILC_CHANNEL_UMODE_CHANFO) {
2900 if (channel->mode & SILC_CHANNEL_MODE_FOUNDER_AUTH) {
2901 if (channel->founder_key)
2902 silc_pkcs_public_key_free(channel->founder_key);
2903 channel->founder_key = NULL;
2908 /* Finally, set the mode */
2909 old_mask = channel->mode = mode_mask;
2911 /* Send CMODE_CHANGE notify. */
2912 cidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
2913 silc_server_send_notify_to_channel(server, NULL, channel, FALSE,
2914 SILC_NOTIFY_TYPE_CMODE_CHANGE, 6,
2915 cidp->data, cidp->len,
2917 cipher, cipher ? strlen(cipher) : 0,
2918 hmac, hmac ? strlen(hmac) : 0,
2919 passphrase, passphrase ?
2920 strlen(passphrase) : 0,
2921 fkey ? fkey->data : NULL,
2922 fkey ? fkey->len : 0);
2924 /* Set CMODE notify type to network */
2925 silc_server_send_notify_cmode(server, SILC_PRIMARY_ROUTE(server),
2926 SILC_BROADCAST(server), channel,
2927 mode_mask, client->id, SILC_ID_CLIENT,
2928 cipher, hmac, passphrase, founder_key);
2930 /* Send command reply to sender */
2931 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_CMODE,
2932 SILC_STATUS_OK, 0, ident, 2,
2933 2, tmp_id, tmp_len2,
2935 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
2936 packet->data, packet->len, FALSE);
2938 silc_buffer_free(packet);
2939 silc_buffer_free(cidp);
2942 channel->mode = old_mask;
2943 silc_buffer_free(fkey);
2944 silc_free(channel_id);
2945 silc_server_command_free(cmd);
2948 /* Server side of CUMODE command. Changes client's mode on a channel. */
2950 SILC_SERVER_CMD_FUNC(cumode)
2952 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2953 SilcServer server = cmd->server;
2954 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
2955 SilcIDListData idata = (SilcIDListData)client;
2956 SilcChannelID *channel_id = NULL;
2957 SilcClientID *client_id = NULL;
2958 SilcChannelEntry channel;
2959 SilcClientEntry target_client;
2960 SilcChannelClientEntry chl;
2961 SilcBuffer packet, idp;
2962 unsigned char *tmp_id, *tmp_ch_id, *tmp_mask;
2963 SilcUInt32 target_mask, sender_mask = 0, tmp_len, tmp_ch_len;
2965 SilcUInt16 ident = silc_command_get_ident(cmd->payload);
2966 SilcPublicKey founder_key = NULL;
2967 SilcBuffer fkey = NULL;
2972 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_CUMODE, cmd, 3, 4);
2974 /* Get Channel ID */
2975 tmp_ch_id = silc_argument_get_arg_type(cmd->args, 1, &tmp_ch_len);
2977 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
2978 SILC_STATUS_ERR_NO_CHANNEL_ID, 0);
2981 channel_id = silc_id_payload_parse_id(tmp_ch_id, tmp_ch_len, NULL);
2983 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
2984 SILC_STATUS_ERR_NO_CHANNEL_ID, 0);
2988 /* Get channel entry */
2989 channel = silc_idlist_find_channel_by_id(server->local_list,
2992 channel = silc_idlist_find_channel_by_id(server->global_list,
2995 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
2996 SILC_STATUS_ERR_NO_SUCH_CHANNEL,
3002 /* Check whether sender is on the channel */
3003 if (!silc_server_client_on_channel(client, channel, &chl)) {
3004 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3005 SILC_STATUS_ERR_NOT_ON_CHANNEL, 0);
3008 sender_mask = chl->mode;
3010 /* Get the target client's channel mode mask */
3011 tmp_mask = silc_argument_get_arg_type(cmd->args, 2, NULL);
3013 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3014 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
3018 SILC_GET32_MSB(target_mask, tmp_mask);
3020 /* Get target Client ID */
3021 tmp_id = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
3023 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3024 SILC_STATUS_ERR_NO_CLIENT_ID, 0);
3027 client_id = silc_id_payload_parse_id(tmp_id, tmp_len, NULL);
3029 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3030 SILC_STATUS_ERR_NO_CLIENT_ID, 0);
3034 /* Get target client's entry */
3035 target_client = silc_idlist_find_client_by_id(server->local_list,
3036 client_id, TRUE, NULL);
3037 if (!target_client) {
3038 target_client = silc_idlist_find_client_by_id(server->global_list,
3039 client_id, TRUE, NULL);
3042 if (target_client != client &&
3043 !(sender_mask & SILC_CHANNEL_UMODE_CHANFO) &&
3044 !(sender_mask & SILC_CHANNEL_UMODE_CHANOP)) {
3045 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3046 SILC_STATUS_ERR_NO_CHANNEL_PRIV, 0);
3050 /* Check whether target client is on the channel */
3051 if (target_client != client) {
3052 if (!silc_server_client_on_channel(target_client, channel, &chl)) {
3053 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3054 SILC_STATUS_ERR_USER_NOT_ON_CHANNEL, 0);
3063 /* If the target client is founder, no one else can change their mode
3065 if (chl->mode & SILC_CHANNEL_UMODE_CHANFO && client != target_client) {
3066 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3067 SILC_STATUS_ERR_NO_CHANNEL_FOPRIV,
3072 if (target_mask & SILC_CHANNEL_UMODE_CHANFO) {
3073 if (target_client != client) {
3074 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3075 SILC_STATUS_ERR_NOT_YOU, 0);
3079 if (!(chl->mode & SILC_CHANNEL_UMODE_CHANFO)) {
3080 /* The client tries to claim the founder rights. */
3081 unsigned char *tmp_auth;
3082 SilcUInt32 tmp_auth_len;
3083 SilcChannelClientEntry chl2;
3084 SilcHashTableList htl;
3086 if (!(channel->mode & SILC_CHANNEL_MODE_FOUNDER_AUTH) ||
3087 !channel->founder_key || !idata->public_key ||
3088 !silc_pkcs_public_key_compare(channel->founder_key,
3089 idata->public_key)) {
3090 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3091 SILC_STATUS_ERR_AUTH_FAILED, 0);
3095 tmp_auth = silc_argument_get_arg_type(cmd->args, 4, &tmp_auth_len);
3097 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3098 SILC_STATUS_ERR_AUTH_FAILED, 0);
3102 /* Verify the authentication payload */
3103 if (!silc_auth_verify_data(tmp_auth, tmp_auth_len, SILC_AUTH_PUBLIC_KEY,
3104 channel->founder_key, 0, server->sha1hash,
3105 client->id, SILC_ID_CLIENT)) {
3106 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3107 SILC_STATUS_ERR_AUTH_FAILED, 0);
3112 founder_key = channel->founder_key;
3113 fkey = silc_pkcs_public_key_payload_encode(founder_key);
3115 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3116 SILC_STATUS_ERR_AUTH_FAILED, 0);
3120 /* There cannot be anyone else as founder on the channel now. This
3121 client is definitely the founder due to this authentication */
3122 silc_hash_table_list(channel->user_list, &htl);
3123 while (silc_hash_table_get(&htl, NULL, (void *)&chl2))
3124 if (chl2->mode & SILC_CHANNEL_UMODE_CHANFO) {
3125 chl2->mode &= ~SILC_CHANNEL_UMODE_CHANFO;
3126 silc_server_force_cumode_change(server, NULL, channel, chl2,
3130 silc_hash_table_list_reset(&htl);
3132 sender_mask = chl->mode |= SILC_CHANNEL_UMODE_CHANFO;
3135 if (chl->mode & SILC_CHANNEL_UMODE_CHANFO) {
3136 if (target_client == client) {
3137 /* Remove channel founder rights from itself */
3138 chl->mode &= ~SILC_CHANNEL_UMODE_CHANFO;
3141 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3142 SILC_STATUS_ERR_NOT_YOU, 0);
3148 if (target_mask & SILC_CHANNEL_UMODE_CHANOP) {
3149 /* Promote to operator */
3150 if (!(chl->mode & SILC_CHANNEL_UMODE_CHANOP)) {
3151 if (!(sender_mask & SILC_CHANNEL_UMODE_CHANOP) &&
3152 !(sender_mask & SILC_CHANNEL_UMODE_CHANFO)) {
3153 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3154 SILC_STATUS_ERR_NO_CHANNEL_PRIV,
3159 chl->mode |= SILC_CHANNEL_UMODE_CHANOP;
3163 if (chl->mode & SILC_CHANNEL_UMODE_CHANOP) {
3164 if (!(sender_mask & SILC_CHANNEL_UMODE_CHANOP) &&
3165 !(sender_mask & SILC_CHANNEL_UMODE_CHANFO)) {
3166 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3167 SILC_STATUS_ERR_NO_CHANNEL_PRIV,
3172 /* Demote to normal user */
3173 chl->mode &= ~SILC_CHANNEL_UMODE_CHANOP;
3178 if (target_mask & SILC_CHANNEL_UMODE_BLOCK_MESSAGES) {
3179 if (target_client != client) {
3180 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3181 SILC_STATUS_ERR_NOT_YOU, 0);
3185 if (!(chl->mode & SILC_CHANNEL_UMODE_BLOCK_MESSAGES)) {
3186 chl->mode |= SILC_CHANNEL_UMODE_BLOCK_MESSAGES;
3190 if (chl->mode & SILC_CHANNEL_UMODE_BLOCK_MESSAGES) {
3191 if (target_client != client) {
3192 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3193 SILC_STATUS_ERR_NOT_YOU, 0);
3197 chl->mode &= ~SILC_CHANNEL_UMODE_BLOCK_MESSAGES;
3202 if (target_mask & SILC_CHANNEL_UMODE_BLOCK_MESSAGES_USERS) {
3203 if (target_client != client) {
3204 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3205 SILC_STATUS_ERR_NOT_YOU, 0);
3209 if (!(chl->mode & SILC_CHANNEL_UMODE_BLOCK_MESSAGES_USERS)) {
3210 chl->mode |= SILC_CHANNEL_UMODE_BLOCK_MESSAGES_USERS;
3214 if (chl->mode & SILC_CHANNEL_UMODE_BLOCK_MESSAGES_USERS) {
3215 if (target_client != client) {
3216 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3217 SILC_STATUS_ERR_NOT_YOU, 0);
3221 chl->mode &= ~SILC_CHANNEL_UMODE_BLOCK_MESSAGES_USERS;
3226 if (target_mask & SILC_CHANNEL_UMODE_BLOCK_MESSAGES_ROBOTS) {
3227 if (target_client != client) {
3228 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3229 SILC_STATUS_ERR_NOT_YOU, 0);
3233 if (!(chl->mode & SILC_CHANNEL_UMODE_BLOCK_MESSAGES_ROBOTS)) {
3234 chl->mode |= SILC_CHANNEL_UMODE_BLOCK_MESSAGES_ROBOTS;
3238 if (chl->mode & SILC_CHANNEL_UMODE_BLOCK_MESSAGES_ROBOTS) {
3239 if (target_client != client) {
3240 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3241 SILC_STATUS_ERR_NOT_YOU, 0);
3245 chl->mode &= ~SILC_CHANNEL_UMODE_BLOCK_MESSAGES_ROBOTS;
3250 if (target_mask & SILC_CHANNEL_UMODE_QUIET) {
3251 if (!(chl->mode & SILC_CHANNEL_UMODE_QUIET)) {
3252 if (client == target_client) {
3253 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3254 SILC_STATUS_ERR_PERM_DENIED, 0);
3257 chl->mode |= SILC_CHANNEL_UMODE_QUIET;
3261 if (chl->mode & SILC_CHANNEL_UMODE_QUIET) {
3262 if (client == target_client) {
3263 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3264 SILC_STATUS_ERR_PERM_DENIED, 0);
3267 chl->mode &= ~SILC_CHANNEL_UMODE_QUIET;
3272 idp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
3273 tmp_id = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
3275 /* Send notify to channel, notify only if mode was actually changed. */
3277 silc_server_send_notify_to_channel(server, NULL, channel, FALSE,
3278 SILC_NOTIFY_TYPE_CUMODE_CHANGE, 4,
3279 idp->data, idp->len,
3282 fkey ? fkey->data : NULL,
3283 fkey ? fkey->len : 0);
3285 /* Set CUMODE notify type to network */
3286 silc_server_send_notify_cumode(server, SILC_PRIMARY_ROUTE(server),
3287 SILC_BROADCAST(server), channel,
3288 target_mask, client->id, SILC_ID_CLIENT,
3289 target_client->id, founder_key);
3292 /* Send command reply to sender */
3293 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_CUMODE,
3294 SILC_STATUS_OK, 0, ident, 3,
3296 3, tmp_ch_id, tmp_ch_len,
3297 4, tmp_id, tmp_len);
3298 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
3299 packet->data, packet->len, FALSE);
3301 silc_buffer_free(packet);
3302 silc_buffer_free(idp);
3305 silc_free(channel_id);
3306 silc_free(client_id);
3307 silc_buffer_free(fkey);
3308 silc_server_command_free(cmd);
3311 /* Server side of KICK command. Kicks client out of channel. */
3313 SILC_SERVER_CMD_FUNC(kick)
3315 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
3316 SilcServer server = cmd->server;
3317 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
3318 SilcClientEntry target_client;
3319 SilcChannelID *channel_id;
3320 SilcClientID *client_id;
3321 SilcChannelEntry channel;
3322 SilcChannelClientEntry chl;
3324 SilcUInt32 tmp_len, target_idp_len;
3325 unsigned char *tmp, *comment, *target_idp;
3330 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_LEAVE, cmd, 1, 3);
3332 /* Get Channel ID */
3333 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
3335 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
3336 SILC_STATUS_ERR_NO_CHANNEL_ID, 0);
3339 channel_id = silc_id_payload_parse_id(tmp, tmp_len, NULL);
3341 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
3342 SILC_STATUS_ERR_NO_CHANNEL_ID, 0);
3346 /* Get channel entry */
3347 channel = silc_idlist_find_channel_by_id(server->local_list,
3350 channel = silc_idlist_find_channel_by_id(server->local_list,
3353 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
3354 SILC_STATUS_ERR_NO_SUCH_CHANNEL,
3360 /* Check whether sender is on the channel */
3361 if (!silc_server_client_on_channel(client, channel, &chl)) {
3362 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
3363 SILC_STATUS_ERR_NOT_ON_CHANNEL, 0);
3367 /* Check that the kicker is channel operator or channel founder */
3368 if (!(chl->mode & SILC_CHANNEL_UMODE_CHANOP) &&
3369 !(chl->mode & SILC_CHANNEL_UMODE_CHANFO)) {
3370 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
3371 SILC_STATUS_ERR_NO_CHANNEL_PRIV, 0);
3375 /* Get target Client ID */
3376 target_idp = silc_argument_get_arg_type(cmd->args, 2, &target_idp_len);
3378 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
3379 SILC_STATUS_ERR_NO_CLIENT_ID, 0);
3382 client_id = silc_id_payload_parse_id(target_idp, target_idp_len, NULL);
3384 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
3385 SILC_STATUS_ERR_NO_CLIENT_ID, 0);
3389 /* Get target client's entry */
3390 target_client = silc_idlist_find_client_by_id(server->local_list,
3391 client_id, TRUE, NULL);
3392 if (!target_client) {
3393 target_client = silc_idlist_find_client_by_id(server->global_list,
3394 client_id, TRUE, NULL);
3397 /* Check whether target client is on the channel */
3398 if (!silc_server_client_on_channel(target_client, channel, &chl)) {
3399 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
3400 SILC_STATUS_ERR_USER_NOT_ON_CHANNEL,
3405 /* Check that the target client is not channel founder. Channel founder
3406 cannot be kicked from the channel. */
3407 if (chl->mode & SILC_CHANNEL_UMODE_CHANFO) {
3408 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
3409 SILC_STATUS_ERR_NO_CHANNEL_FOPRIV,
3416 comment = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
3420 /* Send command reply to sender */
3421 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
3424 /* Send KICKED notify to local clients on the channel */
3425 idp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
3426 silc_server_send_notify_to_channel(server, NULL, channel, FALSE,
3427 SILC_NOTIFY_TYPE_KICKED, 3,
3428 target_idp, target_idp_len,
3429 comment, comment ? strlen(comment) : 0,
3430 idp->data, idp->len);
3431 silc_buffer_free(idp);
3433 /* Send KICKED notify to primary route */
3434 silc_server_send_notify_kicked(server, SILC_PRIMARY_ROUTE(server),
3435 SILC_BROADCAST(server), channel,
3436 target_client->id, client->id, comment);
3438 /* Remove the client from the channel. If the channel does not exist
3439 after removing the client then the client kicked itself off the channel
3440 and we don't have to send anything after that. */
3441 if (!silc_server_remove_from_one_channel(server, NULL, channel,
3442 target_client, FALSE))
3445 if (!(channel->mode & SILC_CHANNEL_MODE_PRIVKEY)) {
3446 /* Re-generate channel key */
3447 if (!silc_server_create_channel_key(server, channel, 0))
3450 /* Send the channel key to the channel. The key of course is not sent
3451 to the client who was kicked off the channel. */
3452 silc_server_send_channel_key(server, target_client->connection, channel,
3453 server->server_type == SILC_ROUTER ?
3454 FALSE : !server->standalone);
3458 silc_server_command_free(cmd);
3461 /* Server side of OPER command. Client uses this comand to obtain server
3462 operator privileges to this server/router. */
3464 SILC_SERVER_CMD_FUNC(oper)
3466 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
3467 SilcServer server = cmd->server;
3468 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
3469 unsigned char *username, *auth;
3471 SilcServerConfigAdmin *admin;
3472 SilcIDListData idata = (SilcIDListData)client;
3473 bool result = FALSE;
3474 SilcPublicKey cached_key;
3476 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT || !client)
3479 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_OPER, cmd, 1, 2);
3481 /* Get the username */
3482 username = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
3484 silc_server_command_send_status_reply(cmd, SILC_COMMAND_OPER,
3485 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
3490 /* Get the admin configuration */
3491 admin = silc_server_config_find_admin(server, cmd->sock->ip,
3492 username, client->nickname);
3494 admin = silc_server_config_find_admin(server, cmd->sock->hostname,
3495 username, client->nickname);
3497 silc_server_command_send_status_reply(cmd, SILC_COMMAND_OPER,
3498 SILC_STATUS_ERR_AUTH_FAILED,
3500 SILC_LOG_INFO(("OPER authentication failed for username '%s' by "
3501 "nickname '%s' from %s", username,
3502 client->nickname, cmd->sock->hostname));
3507 /* Get the authentication payload */
3508 auth = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
3510 silc_server_command_send_status_reply(cmd, SILC_COMMAND_OPER,
3511 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
3516 /* Verify the authentication data. If both passphrase and public key
3517 is set then try both of them. */
3518 if (admin->passphrase)
3519 result = silc_auth_verify_data(auth, tmp_len, SILC_AUTH_PASSWORD,
3520 admin->passphrase, admin->passphrase_len,
3521 idata->hash, client->id, SILC_ID_CLIENT);
3522 if (!result && admin->publickeys) {
3523 cached_key = silc_server_get_public_key(server, admin->publickeys);
3526 result = silc_auth_verify_data(auth, tmp_len, SILC_AUTH_PUBLIC_KEY,
3527 cached_key, 0, idata->hash,
3528 client->id, SILC_ID_CLIENT);
3531 /* Authentication failed */
3532 silc_server_command_send_status_reply(cmd, SILC_COMMAND_OPER,
3533 SILC_STATUS_ERR_AUTH_FAILED,
3538 /* Client is now server operator */
3539 client->mode |= SILC_UMODE_SERVER_OPERATOR;
3541 /* Update statistics */
3542 if (SILC_IS_LOCAL(client))
3543 server->stat.my_server_ops++;
3544 if (server->server_type == SILC_ROUTER)
3545 server->stat.server_ops++;
3547 /* Send UMODE change to primary router */
3548 silc_server_send_notify_umode(server, SILC_PRIMARY_ROUTE(server),
3549 SILC_BROADCAST(server), client->id,
3552 /* Check if anyone is watching this nickname */
3553 if (server->server_type == SILC_ROUTER)
3554 silc_server_check_watcher_list(server, client, NULL,
3555 SILC_NOTIFY_TYPE_UMODE_CHANGE);
3557 /* Send reply to the sender */
3558 silc_server_command_send_status_reply(cmd, SILC_COMMAND_OPER,
3562 silc_server_command_free(cmd);
3565 SILC_TASK_CALLBACK(silc_server_command_detach_cb)
3567 SilcServer server = app_context;
3568 QuitInternal q = (QuitInternal)context;
3569 SilcClientID *client_id = (SilcClientID *)q->sock;
3570 SilcClientEntry client;
3571 SilcSocketConnection sock;
3573 client = silc_idlist_find_client_by_id(server->local_list, client_id,
3575 if (client && client->connection) {
3576 sock = client->connection;
3578 /* If there is pending outgoing data for the client then purge it
3579 to the network before closing connection. */
3580 silc_server_packet_queue_purge(server, sock);
3582 /* Close the connection on our side */
3583 client->router = NULL;
3584 client->connection = NULL;
3585 sock->user_data = NULL;
3586 silc_server_close_connection(server, sock);
3589 silc_free(client_id);
3593 SILC_TASK_CALLBACK(silc_server_command_detach_timeout)
3595 SilcServer server = app_context;
3596 QuitInternal q = (QuitInternal)context;
3597 SilcClientID *client_id = (SilcClientID *)q->sock;
3598 SilcClientEntry client;
3600 client = silc_idlist_find_client_by_id(server->local_list, client_id,
3602 if (client && client->mode & SILC_UMODE_DETACHED) {
3603 SILC_LOG_DEBUG(("Detach timeout"));
3604 silc_server_free_client_data(server, NULL, client, TRUE,
3608 silc_free(client_id);
3612 /* Server side of DETACH command. Detached the client from the network
3613 by closing the connection but preserving the session. */
3615 SILC_SERVER_CMD_FUNC(detach)
3617 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
3618 SilcServer server = cmd->server;
3619 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
3622 if (server->config->detach_disabled) {
3623 silc_server_command_send_status_reply(cmd, SILC_COMMAND_DETACH,
3624 SILC_STATUS_ERR_UNKNOWN_COMMAND, 0);
3628 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT || !client)
3631 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_DETACH, cmd, 0, 0);
3633 /* Remove operator privileges, since the client may resume in some
3634 other server which to it does not have operator privileges. */
3635 SILC_OPER_STATS_UPDATE(client, server, SILC_UMODE_SERVER_OPERATOR);
3636 SILC_OPER_STATS_UPDATE(client, router, SILC_UMODE_ROUTER_OPERATOR);
3638 /* Send the user mode notify to notify that client is detached */
3639 client->mode |= SILC_UMODE_DETACHED;
3640 client->data.status &= ~SILC_IDLIST_STATUS_RESUMED;
3641 client->data.status &= ~SILC_IDLIST_STATUS_NOATTR;
3642 client->last_command = 0;
3643 client->fast_command = 0;
3644 silc_server_send_notify_umode(server, SILC_PRIMARY_ROUTE(server),
3645 SILC_BROADCAST(server), client->id,
3647 server->stat.my_detached++;
3649 /* Check if anyone is watching this nickname */
3650 if (server->server_type == SILC_ROUTER)
3651 silc_server_check_watcher_list(server, client, NULL,
3652 SILC_NOTIFY_TYPE_UMODE_CHANGE);
3654 q = silc_calloc(1, sizeof(*q));
3655 q->sock = silc_id_dup(client->id, SILC_ID_CLIENT);
3656 silc_schedule_task_add(server->schedule, 0, silc_server_command_detach_cb,
3657 q, 0, 200000, SILC_TASK_TIMEOUT, SILC_TASK_PRI_LOW);
3659 if (server->config->detach_timeout) {
3660 q = silc_calloc(1, sizeof(*q));
3661 q->sock = silc_id_dup(client->id, SILC_ID_CLIENT);
3662 silc_schedule_task_add(server->schedule, 0,
3663 silc_server_command_detach_timeout,
3664 q, server->config->detach_timeout * 60,
3665 0, SILC_TASK_TIMEOUT, SILC_TASK_PRI_LOW);
3668 /* Send reply to the sender */
3669 silc_server_command_send_status_reply(cmd, SILC_COMMAND_DETACH,
3673 silc_server_command_free(cmd);
3676 /* Server side of WATCH command. */
3678 SILC_SERVER_CMD_FUNC(watch)
3680 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
3681 SilcServer server = cmd->server;
3682 char *add_nick, *del_nick;
3683 SilcUInt32 add_nick_len, del_nick_len, tmp_len;
3685 unsigned char hash[16], *tmp;
3686 SilcClientEntry client;
3687 SilcClientID *client_id = NULL;
3689 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_WATCH, cmd, 1, 3);
3691 if (server->server_type != SILC_ROUTER && !server->standalone) {
3692 if (!cmd->pending) {
3693 /* Send the command to router */
3695 SilcUInt16 old_ident;
3697 SILC_LOG_DEBUG(("Forwarding WATCH to router"));
3699 old_ident = silc_command_get_ident(cmd->payload);
3700 silc_command_set_ident(cmd->payload, ++server->cmd_ident);
3701 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
3703 silc_server_packet_send(server, SILC_PRIMARY_ROUTE(server),
3704 SILC_PACKET_COMMAND, cmd->packet->flags,
3705 tmpbuf->data, tmpbuf->len, TRUE);
3707 /* Reprocess this packet after received reply from router */
3708 silc_server_command_pending(server, SILC_COMMAND_WATCH,
3709 silc_command_get_ident(cmd->payload),
3710 silc_server_command_watch,
3711 silc_server_command_dup(cmd));
3712 cmd->pending = TRUE;
3713 silc_command_set_ident(cmd->payload, old_ident);
3714 silc_buffer_free(tmpbuf);
3715 } else if (context2) {
3716 /* Received reply from router, just send same data to the client. */
3717 SilcServerCommandReplyContext reply = context2;
3720 SILC_LOG_DEBUG(("Received reply to WATCH from router"));
3721 silc_command_get_status(reply->payload, &status, NULL);
3722 silc_server_command_send_status_reply(cmd, SILC_COMMAND_WATCH, status,
3729 /* We are router and keep the watch list for local cell */
3731 /* Get the client ID */
3732 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
3734 silc_server_command_send_status_reply(cmd, SILC_COMMAND_WATCH,
3735 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
3739 client_id = silc_id_payload_parse_id(tmp, tmp_len, NULL);
3741 silc_server_command_send_status_reply(cmd, SILC_COMMAND_WATCH,
3742 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID,
3747 /* Get the client entry which must be in local list */
3748 client = silc_idlist_find_client_by_id(server->local_list,
3749 client_id, TRUE, NULL);
3751 silc_server_command_send_status_reply(cmd, SILC_COMMAND_WATCH,
3752 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID,
3758 add_nick = silc_argument_get_arg_type(cmd->args, 2, &add_nick_len);
3759 del_nick = silc_argument_get_arg_type(cmd->args, 3, &del_nick_len);
3760 if (!add_nick && !del_nick) {
3761 silc_server_command_send_status_reply(cmd, SILC_COMMAND_WATCH,
3762 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
3767 if (add_nick && add_nick_len > 128)
3768 add_nick[128] = '\0';
3769 if (del_nick && del_nick_len > 128)
3770 del_nick[128] = '\0';
3772 memset(nick, 0, sizeof(nick));
3774 /* Add new nickname to be watched in our cell */
3776 if (silc_server_name_bad_chars(add_nick, strlen(add_nick)) == TRUE) {
3777 silc_server_command_send_status_reply(cmd, SILC_COMMAND_WATCH,
3778 SILC_STATUS_ERR_BAD_NICKNAME, 0);
3782 /* Hash the nick, we have the hash saved, not nicks because we can
3783 do one to one mapping to the nick from Client ID hash this way. */
3784 silc_to_lower(add_nick, nick, sizeof(nick) - 1);
3785 silc_hash_make(server->md5hash, nick, strlen(nick), hash);
3787 /* Check whether this client is already watching this nickname */
3788 if (silc_hash_table_find_by_context(server->watcher_list, hash,
3790 /* Nickname is alredy being watched for this client */
3791 silc_server_command_send_status_reply(cmd, SILC_COMMAND_WATCH,
3792 SILC_STATUS_ERR_NICKNAME_IN_USE,
3797 /* Get the nickname from the watcher list and use the same key in
3798 new entries as well. If key doesn't exist then create it. */
3799 if (!silc_hash_table_find(server->watcher_list, hash, (void **)&tmp, NULL))
3800 tmp = silc_memdup(hash, CLIENTID_HASH_LEN);
3802 /* Add the client to the watcher list with the specified nickname hash. */
3803 silc_hash_table_add(server->watcher_list, tmp, client);
3806 /* Delete nickname from watch list */
3808 if (silc_server_name_bad_chars(del_nick, strlen(del_nick)) == TRUE) {
3809 silc_server_command_send_status_reply(cmd, SILC_COMMAND_WATCH,
3810 SILC_STATUS_ERR_BAD_NICKNAME, 0);
3814 /* Hash the nick, we have the hash saved, not nicks because we can
3815 do one to one mapping to the nick from Client ID hash this way. */
3816 silc_to_lower(del_nick, nick, sizeof(nick) - 1);
3817 silc_hash_make(server->md5hash, nick, strlen(nick), hash);
3819 /* Check that this client is watching for this nickname */
3820 if (!silc_hash_table_find_by_context(server->watcher_list, hash,
3821 client, (void **)&tmp)) {
3822 /* Nickname is alredy being watched for this client */
3823 silc_server_command_send_status_reply(cmd, SILC_COMMAND_WATCH,
3824 SILC_STATUS_ERR_NO_SUCH_NICK, 0);
3828 /* Delete the nickname from the watcher list. */
3829 silc_hash_table_del_by_context(server->watcher_list, hash, client);
3831 /* Now check whether there still exists entries with this key, if not
3832 then free the key to not leak memory. */
3833 if (!silc_hash_table_find(server->watcher_list, hash, NULL, NULL))
3837 /* Distribute the watch list to backup routers too */
3838 if (server->backup) {
3840 silc_command_set_ident(cmd->payload, ++server->cmd_ident);
3841 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
3842 silc_server_backup_send(server, NULL, SILC_PACKET_COMMAND,
3843 cmd->packet->flags, tmpbuf->data, tmpbuf->len,
3845 silc_buffer_free(tmpbuf);
3848 silc_server_command_send_status_reply(cmd, SILC_COMMAND_WATCH,
3852 silc_free(client_id);
3853 silc_server_command_free(cmd);
3856 /* Server side of SILCOPER command. Client uses this comand to obtain router
3857 operator privileges to this router. */
3859 SILC_SERVER_CMD_FUNC(silcoper)
3861 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
3862 SilcServer server = cmd->server;
3863 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
3864 unsigned char *username, *auth;
3866 SilcServerConfigAdmin *admin;
3867 SilcIDListData idata = (SilcIDListData)client;
3868 bool result = FALSE;
3869 SilcPublicKey cached_key;
3871 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT || !client)
3874 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_SILCOPER, cmd, 1, 2);
3876 if (server->server_type != SILC_ROUTER) {
3877 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
3878 SILC_STATUS_ERR_AUTH_FAILED, 0);
3882 /* Get the username */
3883 username = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
3885 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
3886 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
3891 /* Get the admin configuration */
3892 admin = silc_server_config_find_admin(server, cmd->sock->ip,
3893 username, client->nickname);
3895 admin = silc_server_config_find_admin(server, cmd->sock->hostname,
3896 username, client->nickname);
3898 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
3899 SILC_STATUS_ERR_AUTH_FAILED, 0);
3900 SILC_LOG_INFO(("SILCOPER authentication failed for username '%s' by "
3901 "nickname '%s' from %s", username,
3902 client->nickname, cmd->sock->hostname));
3907 /* Get the authentication payload */
3908 auth = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
3910 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
3911 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
3916 /* Verify the authentication data. If both passphrase and public key
3917 is set then try both of them. */
3918 if (admin->passphrase)
3919 result = silc_auth_verify_data(auth, tmp_len, SILC_AUTH_PASSWORD,
3920 admin->passphrase, admin->passphrase_len,
3921 idata->hash, client->id, SILC_ID_CLIENT);
3922 if (!result && admin->publickeys) {
3923 cached_key = silc_server_get_public_key(server, admin->publickeys);
3926 result = silc_auth_verify_data(auth, tmp_len, SILC_AUTH_PUBLIC_KEY,
3927 cached_key, 0, idata->hash,
3928 client->id, SILC_ID_CLIENT);
3931 /* Authentication failed */
3932 silc_server_command_send_status_reply(cmd, SILC_COMMAND_OPER,
3933 SILC_STATUS_ERR_AUTH_FAILED, 0);
3937 /* Client is now router operator */
3938 client->mode |= SILC_UMODE_ROUTER_OPERATOR;
3940 /* Update statistics */
3941 if (SILC_IS_LOCAL(client))
3942 server->stat.my_router_ops++;
3943 if (server->server_type == SILC_ROUTER)
3944 server->stat.router_ops++;
3946 /* Send UMODE change to primary router */
3947 silc_server_send_notify_umode(server, SILC_PRIMARY_ROUTE(server),
3948 SILC_BROADCAST(server), client->id,
3951 /* Check if anyone is watching this nickname */
3952 if (server->server_type == SILC_ROUTER)
3953 silc_server_check_watcher_list(server, client, NULL,
3954 SILC_NOTIFY_TYPE_UMODE_CHANGE);
3956 /* Send reply to the sender */
3957 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
3961 silc_server_command_free(cmd);
3964 /* Server side of command BAN. This is used to manage the ban list of the
3965 channel. To add clients and remove clients from the ban list. */
3967 SILC_SERVER_CMD_FUNC(ban)
3969 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
3970 SilcServer server = cmd->server;
3971 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
3973 SilcChannelEntry channel;
3974 SilcChannelClientEntry chl;
3975 SilcChannelID *channel_id = NULL;
3976 unsigned char *id, *add, *del;
3977 SilcUInt32 id_len, tmp_len;
3978 SilcUInt16 ident = silc_command_get_ident(cmd->payload);
3980 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT || !client)
3983 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_BAN, cmd, 0, 3);
3985 /* Get Channel ID */
3986 id = silc_argument_get_arg_type(cmd->args, 1, &id_len);
3988 channel_id = silc_id_payload_parse_id(id, id_len, NULL);
3990 silc_server_command_send_status_reply(cmd, SILC_COMMAND_BAN,
3991 SILC_STATUS_ERR_NO_CHANNEL_ID, 0);
3996 /* Get channel entry. The server must know about the channel since the
3997 client is expected to be on the channel. */
3998 channel = silc_idlist_find_channel_by_id(server->local_list,
4001 channel = silc_idlist_find_channel_by_id(server->global_list,
4004 silc_server_command_send_status_reply(cmd, SILC_COMMAND_BAN,
4005 SILC_STATUS_ERR_NO_SUCH_CHANNEL,
4011 /* Check whether this client is on the channel */
4012 if (!silc_server_client_on_channel(client, channel, &chl)) {
4013 silc_server_command_send_status_reply(cmd, SILC_COMMAND_BAN,
4014 SILC_STATUS_ERR_NOT_ON_CHANNEL, 0);
4018 /* The client must be at least channel operator. */
4019 if (!(chl->mode & SILC_CHANNEL_UMODE_CHANOP)) {
4020 silc_server_command_send_status_reply(cmd, SILC_COMMAND_BAN,
4021 SILC_STATUS_ERR_NO_CHANNEL_PRIV, 0);
4025 /* Get the new ban and add it to the ban list */
4026 add = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
4028 if (!channel->ban_list)
4029 channel->ban_list = silc_calloc(tmp_len + 2, sizeof(*channel->ban_list));
4031 channel->ban_list = silc_realloc(channel->ban_list,
4032 sizeof(*channel->ban_list) *
4034 strlen(channel->ban_list) + 2));
4035 if (add[tmp_len - 1] == ',')
4036 add[tmp_len - 1] = '\0';
4038 strncat(channel->ban_list, add, tmp_len);
4039 strncat(channel->ban_list, ",", 1);
4042 /* Get the ban to be removed and remove it from the list */
4043 del = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
4044 if (del && channel->ban_list) {
4045 char *start, *end, *n;
4047 if (!strncmp(channel->ban_list, del, strlen(channel->ban_list) - 1)) {
4048 silc_free(channel->ban_list);
4049 channel->ban_list = NULL;
4051 start = strstr(channel->ban_list, del);
4052 if (start && strlen(start) >= tmp_len) {
4053 end = start + tmp_len;
4054 n = silc_calloc(strlen(channel->ban_list) - tmp_len, sizeof(*n));
4055 strncat(n, channel->ban_list, start - channel->ban_list);
4056 strncat(n, end + 1, ((channel->ban_list + strlen(channel->ban_list)) -
4058 silc_free(channel->ban_list);
4059 channel->ban_list = n;
4064 /* Send the BAN notify type to our primary router. */
4066 silc_server_send_notify_ban(server, SILC_PRIMARY_ROUTE(server),
4067 SILC_BROADCAST(server), channel, add, del);
4069 /* Send the reply back to the client */
4071 silc_command_reply_payload_encode_va(SILC_COMMAND_BAN,
4072 SILC_STATUS_OK, 0, ident, 2,
4074 3, channel->ban_list,
4076 strlen(channel->ban_list) -1 : 0);
4077 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
4078 packet->data, packet->len, FALSE);
4080 silc_buffer_free(packet);
4083 silc_free(channel_id);
4084 silc_server_command_free(cmd);
4087 /* Server side command of LEAVE. Removes client from a channel. */
4089 SILC_SERVER_CMD_FUNC(leave)
4091 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4092 SilcServer server = cmd->server;
4093 SilcSocketConnection sock = cmd->sock;
4094 SilcClientEntry id_entry = (SilcClientEntry)cmd->sock->user_data;
4095 SilcChannelID *id = NULL;
4096 SilcChannelEntry channel;
4100 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT || !id_entry)
4103 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_LEAVE, cmd, 1, 2);
4105 /* Get Channel ID */
4106 tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
4108 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
4109 SILC_STATUS_ERR_NO_CHANNEL_ID, 0);
4112 id = silc_id_payload_parse_id(tmp, len, NULL);
4114 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
4115 SILC_STATUS_ERR_NO_CHANNEL_ID, 0);
4119 /* Get channel entry */
4120 channel = silc_idlist_find_channel_by_id(server->local_list, id, NULL);
4122 channel = silc_idlist_find_channel_by_id(server->global_list, id, NULL);
4124 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
4125 SILC_STATUS_ERR_NO_SUCH_CHANNEL,
4131 /* Check whether this client is on the channel */
4132 if (!silc_server_client_on_channel(id_entry, channel, NULL)) {
4133 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
4134 SILC_STATUS_ERR_NOT_ON_CHANNEL, 0);
4138 /* Notify routers that they should remove this client from their list
4139 of clients on the channel. Send LEAVE notify type. */
4140 silc_server_send_notify_leave(server, SILC_PRIMARY_ROUTE(server),
4141 SILC_BROADCAST(server), channel, id_entry->id);
4143 silc_server_command_send_status_data(cmd, SILC_COMMAND_LEAVE,
4144 SILC_STATUS_OK, 0, 2, tmp, len);
4146 /* Remove client from channel */
4147 if (!silc_server_remove_from_one_channel(server, sock, channel, id_entry,
4149 /* If the channel does not exist anymore we won't send anything */
4152 if (!(channel->mode & SILC_CHANNEL_MODE_PRIVKEY)) {
4153 /* Re-generate channel key */
4154 if (!silc_server_create_channel_key(server, channel, 0))
4157 /* Send the channel key */
4158 silc_server_send_channel_key(server, NULL, channel,
4159 server->server_type == SILC_ROUTER ?
4160 FALSE : !server->standalone);
4165 silc_server_command_free(cmd);
4168 /* Server side of command USERS. Resolves clients and their USERS currently
4169 joined on the requested channel. The list of Client ID's and their modes
4170 on the channel is sent back. */
4172 SILC_SERVER_CMD_FUNC(users)
4174 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4175 SilcServer server = cmd->server;
4176 SilcChannelEntry channel;
4177 SilcChannelID *id = NULL;
4178 SilcBuffer packet, idp;
4179 unsigned char *channel_id;
4180 SilcUInt32 channel_id_len;
4181 SilcBuffer client_id_list;
4182 SilcBuffer client_mode_list;
4183 unsigned char lc[4];
4184 SilcUInt32 list_count = 0;
4185 SilcUInt16 ident = silc_command_get_ident(cmd->payload);
4188 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_USERS, cmd, 1, 2);
4190 /* Get Channel ID */
4191 channel_id = silc_argument_get_arg_type(cmd->args, 1, &channel_id_len);
4193 /* Get channel name */
4194 channel_name = silc_argument_get_arg_type(cmd->args, 2, NULL);
4196 if (!channel_id && !channel_name) {
4197 silc_server_command_send_status_reply(cmd, SILC_COMMAND_USERS,
4198 SILC_STATUS_ERR_NO_CHANNEL_ID, 0);
4203 id = silc_id_payload_parse_id(channel_id, channel_id_len, NULL);
4205 silc_server_command_send_status_reply(cmd, SILC_COMMAND_USERS,
4206 SILC_STATUS_ERR_NO_CHANNEL_ID, 0);
4211 /* If we are server and we don't know about this channel we will send
4212 the command to our router. If we know about the channel then we also
4213 have the list of users already. */
4215 channel = silc_idlist_find_channel_by_id(server->local_list, id, NULL);
4217 channel = silc_idlist_find_channel_by_name(server->local_list,
4218 channel_name, NULL);
4220 if (!channel || (!server->standalone && (channel->disabled ||
4221 !channel->users_resolved))) {
4222 if (server->server_type != SILC_ROUTER && !server->standalone &&
4226 silc_command_set_ident(cmd->payload, ++server->cmd_ident);
4227 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
4229 /* Send USERS command */
4230 silc_server_packet_send(server, SILC_PRIMARY_ROUTE(server),
4231 SILC_PACKET_COMMAND, cmd->packet->flags,
4232 tmpbuf->data, tmpbuf->len, TRUE);
4234 /* Reprocess this packet after received reply */
4235 silc_server_command_pending(server, SILC_COMMAND_USERS,
4236 silc_command_get_ident(cmd->payload),
4237 silc_server_command_users,
4238 silc_server_command_dup(cmd));
4239 cmd->pending = TRUE;
4240 silc_command_set_ident(cmd->payload, ident);
4241 silc_buffer_free(tmpbuf);
4246 /* Check the global list as well. */
4248 channel = silc_idlist_find_channel_by_id(server->global_list, id, NULL);
4250 channel = silc_idlist_find_channel_by_name(server->global_list,
4251 channel_name, NULL);
4253 /* Channel really does not exist */
4254 silc_server_command_send_status_reply(cmd, SILC_COMMAND_USERS,
4255 SILC_STATUS_ERR_NO_SUCH_CHANNEL,
4261 /* If the channel is private or secret do not send anything, unless the
4262 user requesting this command is on the channel or is server */
4263 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT) {
4264 if (channel->mode & (SILC_CHANNEL_MODE_PRIVATE | SILC_CHANNEL_MODE_SECRET)
4265 && !silc_server_client_on_channel(cmd->sock->user_data, channel,
4267 silc_server_command_send_status_reply(cmd, SILC_COMMAND_USERS,
4268 SILC_STATUS_ERR_NO_SUCH_CHANNEL,
4274 /* Get the users list */
4275 if (!silc_server_get_users_on_channel(server, channel, &client_id_list,
4276 &client_mode_list, &list_count)) {
4278 client_id_list = NULL;
4279 client_mode_list = NULL;
4283 SILC_PUT32_MSB(list_count, lc);
4286 idp = silc_id_payload_encode(channel->id, SILC_ID_CHANNEL);
4287 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_USERS,
4288 SILC_STATUS_OK, 0, ident, 4,
4289 2, idp->data, idp->len,
4292 client_id_list->data : NULL,
4294 client_id_list->len : 0,
4295 5, client_mode_list ?
4296 client_mode_list->data : NULL,
4298 client_mode_list->len : 0);
4299 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
4300 packet->data, packet->len, FALSE);
4302 silc_buffer_free(idp);
4303 silc_buffer_free(packet);
4305 silc_buffer_free(client_id_list);
4306 if (client_mode_list)
4307 silc_buffer_free(client_mode_list);
4311 silc_server_command_free(cmd);
4314 /* Server side of command GETKEY. This fetches the client's public key
4315 from the server where to the client is connected. */
4317 SILC_SERVER_CMD_FUNC(getkey)
4319 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4320 SilcServer server = cmd->server;
4322 SilcClientEntry client;
4323 SilcServerEntry server_entry;
4324 SilcClientID *client_id = NULL;
4325 SilcServerID *server_id = NULL;
4326 SilcIDPayload idp = NULL;
4327 SilcUInt16 ident = silc_command_get_ident(cmd->payload);
4330 SilcBuffer pk = NULL;
4332 SilcPublicKey public_key;
4334 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
4336 silc_server_command_send_status_reply(cmd, SILC_COMMAND_GETKEY,
4337 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
4341 idp = silc_id_payload_parse(tmp, tmp_len);
4343 silc_server_command_send_status_reply(cmd, SILC_COMMAND_GETKEY,
4344 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
4349 id_type = silc_id_payload_get_type(idp);
4350 if (id_type == SILC_ID_CLIENT) {
4351 client_id = silc_id_payload_get_id(idp);
4353 /* If the client is not found from local list there is no chance it
4354 would be locally connected client so send the command further. */
4355 client = silc_idlist_find_client_by_id(server->local_list,
4356 client_id, TRUE, NULL);
4358 client = silc_idlist_find_client_by_id(server->global_list,
4359 client_id, TRUE, NULL);
4361 if ((!client && !cmd->pending && !server->standalone) ||
4362 (client && !client->connection && !cmd->pending &&
4363 !(client->mode & SILC_UMODE_DETACHED)) ||
4364 (client && !client->data.public_key && !cmd->pending)) {
4366 SilcUInt16 old_ident;
4367 SilcSocketConnection dest_sock;
4369 dest_sock = silc_server_get_client_route(server, NULL, 0,
4370 client_id, NULL, NULL);
4374 old_ident = silc_command_get_ident(cmd->payload);
4375 silc_command_set_ident(cmd->payload, ++server->cmd_ident);
4376 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
4378 silc_server_packet_send(server, dest_sock,
4379 SILC_PACKET_COMMAND, cmd->packet->flags,
4380 tmpbuf->data, tmpbuf->len, TRUE);
4382 /* Reprocess this packet after received reply from router */
4383 silc_server_command_pending(server, SILC_COMMAND_GETKEY,
4384 silc_command_get_ident(cmd->payload),
4385 silc_server_command_getkey,
4386 silc_server_command_dup(cmd));
4387 cmd->pending = TRUE;
4388 silc_command_set_ident(cmd->payload, old_ident);
4389 silc_buffer_free(tmpbuf);
4394 silc_server_command_send_status_reply(cmd, SILC_COMMAND_GETKEY,
4395 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID,
4400 /* The client is locally connected, just get the public key and
4401 send it back. If they key does not exist then do not send it,
4402 send just OK reply */
4403 public_key = client->data.public_key;
4405 pk = silc_pkcs_public_key_payload_encode(public_key);
4406 } else if (id_type == SILC_ID_SERVER) {
4407 server_id = silc_id_payload_get_id(idp);
4409 /* If the server is not found from local list there is no chance it
4410 would be locally connected server so send the command further. */
4411 server_entry = silc_idlist_find_server_by_id(server->local_list,
4412 server_id, TRUE, NULL);
4414 server_entry = silc_idlist_find_server_by_id(server->global_list,
4415 server_id, TRUE, NULL);
4417 if (server_entry != server->id_entry &&
4418 ((!server_entry && !cmd->pending && !server->standalone) ||
4419 (server_entry && !server_entry->connection && !cmd->pending &&
4420 !server->standalone) ||
4421 (server_entry && !server_entry->data.public_key && !cmd->pending &&
4422 !server->standalone))) {
4424 SilcUInt16 old_ident;
4426 old_ident = silc_command_get_ident(cmd->payload);
4427 silc_command_set_ident(cmd->payload, ++server->cmd_ident);
4428 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
4430 silc_server_packet_send(server, SILC_PRIMARY_ROUTE(server),
4431 SILC_PACKET_COMMAND, cmd->packet->flags,
4432 tmpbuf->data, tmpbuf->len, TRUE);
4434 /* Reprocess this packet after received reply from router */
4435 silc_server_command_pending(server, SILC_COMMAND_GETKEY,
4436 silc_command_get_ident(cmd->payload),
4437 silc_server_command_getkey,
4438 silc_server_command_dup(cmd));
4439 cmd->pending = TRUE;
4440 silc_command_set_ident(cmd->payload, old_ident);
4441 silc_buffer_free(tmpbuf);
4445 if (!server_entry) {
4446 silc_server_command_send_status_reply(cmd, SILC_COMMAND_GETKEY,
4447 SILC_STATUS_ERR_NO_SUCH_SERVER_ID,
4452 /* If they key does not exist then do not send it, send just OK reply */
4453 public_key = (!server_entry->data.public_key ?
4454 (server_entry == server->id_entry ? server->public_key :
4455 NULL) : server_entry->data.public_key);
4457 pk = silc_pkcs_public_key_payload_encode(public_key);
4462 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
4463 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_GETKEY,
4464 SILC_STATUS_OK, 0, ident, 2,
4466 3, pk ? pk->data : NULL,
4468 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
4469 packet->data, packet->len, FALSE);
4470 silc_buffer_free(packet);
4474 silc_id_payload_free(idp);
4475 silc_buffer_free(pk);
4476 silc_free(client_id);
4477 silc_free(server_id);
4478 silc_server_command_free(cmd);
4482 /* Private range commands, specific to this implementation */
4484 /* Server side command of CONNECT. Connects us to the specified remote
4485 server or router. */
4487 SILC_SERVER_CMD_FUNC(connect)
4489 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4490 SilcServer server = cmd->server;
4491 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
4492 unsigned char *tmp, *host;
4494 SilcUInt32 port = SILC_PORT;
4496 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT || !client)
4499 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_PRIV_CONNECT, cmd, 1, 2);
4501 /* Check whether client has the permissions. */
4502 if (!(client->mode & SILC_UMODE_SERVER_OPERATOR) &&
4503 !(client->mode & SILC_UMODE_ROUTER_OPERATOR)) {
4504 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PRIV_CONNECT,
4505 SILC_STATUS_ERR_NO_SERVER_PRIV, 0);
4509 if (server->server_type == SILC_ROUTER && !server->backup_router &&
4510 client->mode & SILC_UMODE_SERVER_OPERATOR) {
4511 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PRIV_CONNECT,
4512 SILC_STATUS_ERR_NO_ROUTER_PRIV, 0);
4516 /* Get the remote server */
4517 host = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
4519 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PRIV_CONNECT,
4520 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
4526 tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
4528 SILC_GET32_MSB(port, tmp);
4530 /* Create the connection. It is done with timeout and is async. */
4531 silc_server_create_connection(server, host, port);
4533 /* Send reply to the sender */
4534 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PRIV_CONNECT,
4538 silc_server_command_free(cmd);
4541 /* Server side command of CLOSE. Closes connection to a specified server. */
4543 SILC_SERVER_CMD_FUNC(close)
4545 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4546 SilcServer server = cmd->server;
4547 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
4548 SilcServerEntry server_entry;
4549 SilcSocketConnection sock;
4552 unsigned char *name;
4553 SilcUInt32 port = SILC_PORT;
4555 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT || !client)
4558 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_PRIV_CLOSE, cmd, 1, 2);
4560 /* Check whether client has the permissions. */
4561 if (!(client->mode & SILC_UMODE_SERVER_OPERATOR) &&
4562 !(client->mode & SILC_UMODE_ROUTER_OPERATOR)) {
4563 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PRIV_CLOSE,
4564 SILC_STATUS_ERR_NO_SERVER_PRIV,
4569 /* Get the remote server */
4570 name = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
4572 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PRIV_CLOSE,
4573 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
4579 tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
4581 SILC_GET32_MSB(port, tmp);
4583 server_entry = silc_idlist_find_server_by_conn(server->local_list,
4584 name, port, FALSE, NULL);
4586 server_entry = silc_idlist_find_server_by_conn(server->global_list,
4587 name, port, FALSE, NULL);
4588 if (!server_entry) {
4589 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PRIV_CLOSE,
4590 SILC_STATUS_ERR_NO_SERVER_ID, 0);
4594 if (server_entry == server->id_entry) {
4595 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PRIV_CLOSE,
4596 SILC_STATUS_ERR_NO_SERVER_ID, 0);
4600 /* Send reply to the sender */
4601 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PRIV_CLOSE,
4604 /* Close the connection to the server */
4605 sock = (SilcSocketConnection)server_entry->connection;
4607 /* If we shutdown primary router connection manually then don't trigger
4608 any reconnect or backup router connections, by setting the router
4610 if (server->router == server_entry) {
4611 server->id_entry->router = NULL;
4612 server->router = NULL;
4613 server->standalone = TRUE;
4615 silc_server_free_sock_user_data(server, sock, NULL);
4616 silc_server_close_connection(server, sock);
4619 silc_server_command_free(cmd);
4622 /* Server side command of SHUTDOWN. Shutdowns the server and closes all
4623 active connections. */
4625 SILC_SERVER_CMD_FUNC(shutdown)
4627 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4628 SilcServer server = cmd->server;
4629 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
4631 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT || !client)
4634 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_PRIV_SHUTDOWN, cmd, 0, 0);
4636 /* Check whether client has the permission. */
4637 if (!(client->mode & SILC_UMODE_SERVER_OPERATOR) &&
4638 !(client->mode & SILC_UMODE_ROUTER_OPERATOR)) {
4639 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PRIV_SHUTDOWN,
4640 SILC_STATUS_ERR_NO_SERVER_PRIV,
4645 /* Send reply to the sender */
4646 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PRIV_SHUTDOWN,
4649 /* Then, gracefully, or not, bring the server down. */
4650 silc_server_stop(server);
4654 silc_server_command_free(cmd);