5 Author: Pekka Riikonen <priikone@silcnet.org>
7 Copyright (C) 1997 - 2004 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);
166 /* Update access time */
167 client->last_command = time(NULL);
169 if (!(timeout->cmd->flags & SILC_CF_REG)) {
170 SILC_LOG_DEBUG(("Calling %s command",
171 silc_get_command_name(timeout->cmd->cmd)));
172 timeout->cmd->cb(timeout->ctx, NULL);
173 } else if (silc_server_is_registered(timeout->ctx->server,
176 timeout->cmd->cmd)) {
177 SILC_LOG_DEBUG(("Calling %s command",
178 silc_get_command_name(timeout->cmd->cmd)));
179 timeout->cmd->cb(timeout->ctx, NULL);
181 SILC_LOG_DEBUG(("Client is not registered"));
182 silc_server_command_free(timeout->ctx);
188 /* Processes received command packet. */
190 void silc_server_command_process(SilcServer server,
191 SilcSocketConnection sock,
192 SilcPacketContext *packet)
194 SilcServerCommandContext ctx;
195 SilcServerCommand *cmd;
198 /* Allocate command context. This must be free'd by the
199 command routine receiving it. */
200 ctx = silc_server_command_alloc();
201 ctx->server = server;
202 ctx->sock = silc_socket_dup(sock);
203 ctx->packet = silc_packet_context_dup(packet); /* Save original packet */
205 /* Parse the command payload in the packet */
206 ctx->payload = silc_command_payload_parse(packet->buffer->data,
207 packet->buffer->len);
209 SILC_LOG_ERROR(("Bad command payload, packet dropped"));
210 silc_packet_context_free(packet);
211 silc_socket_free(ctx->sock);
215 ctx->args = silc_command_get_args(ctx->payload);
217 /* Get the command */
218 command = silc_command_get(ctx->payload);
219 for (cmd = silc_command_list; cmd->cb; cmd++)
220 if (cmd->cmd == command)
223 if (!cmd || !cmd->cb) {
224 SILC_LOG_DEBUG(("Unknown command %d", command));
225 silc_server_command_send_status_reply(ctx, command,
226 SILC_STATUS_ERR_UNKNOWN_COMMAND, 0);
227 silc_server_command_free(ctx);
231 /* Execute client's commands always with timeout. Normally they are
232 executed with zero (0) timeout but if client is sending command more
233 frequently than once in 2 seconds, then the timeout may be 0 to 2
235 if (sock->type == SILC_SOCKET_TYPE_CLIENT) {
236 SilcClientEntry client = (SilcClientEntry)sock->user_data;
237 SilcServerCommandTimeout timeout;
241 SILC_LOG_DEBUG(("Client entry is invalid"));
242 silc_server_command_free(ctx);
246 timeout = silc_calloc(1, sizeof(*timeout));
250 if (client->last_command && (time(NULL) - client->last_command) < 2) {
251 client->fast_command++;
254 if (client->fast_command - 2 <= 0)
255 client->fast_command = 0;
257 client->fast_command -= 2;
261 if (!fast && ((cmd->flags & SILC_CF_LAG_STRICT) ||
262 (client->fast_command > 5 && cmd->flags & SILC_CF_LAG)))
263 silc_schedule_task_add(server->schedule, sock->sock,
264 silc_server_command_process_timeout, timeout,
265 (client->fast_command < 3 ? 0 :
266 2 - (time(NULL) - client->last_command)),
267 (client->fast_command < 3 ? 200000 : 0),
268 SILC_TASK_TIMEOUT, SILC_TASK_PRI_NORMAL);
270 silc_schedule_task_add(server->schedule, sock->sock,
271 silc_server_command_process_timeout, timeout,
272 0, 1, SILC_TASK_TIMEOUT, SILC_TASK_PRI_NORMAL);
276 /* Execute for server */
278 if (!(cmd->flags & SILC_CF_REG)) {
279 SILC_LOG_DEBUG(("Calling %s command", silc_get_command_name(cmd->cmd)));
281 } else if (silc_server_is_registered(server, sock, ctx, cmd->cmd)) {
282 SILC_LOG_DEBUG(("Calling %s command", silc_get_command_name(cmd->cmd)));
285 SILC_LOG_DEBUG(("Server is not registered"));
286 silc_server_command_free(ctx);
290 /* Allocate Command Context */
292 SilcServerCommandContext silc_server_command_alloc()
294 SilcServerCommandContext ctx = silc_calloc(1, sizeof(*ctx));
299 /* Free's the command context allocated before executing the command */
301 void silc_server_command_free(SilcServerCommandContext ctx)
304 SILC_LOG_DEBUG(("Command context %p refcnt %d->%d", ctx, ctx->users + 1,
306 if (ctx->users < 1) {
308 silc_command_payload_free(ctx->payload);
310 silc_packet_context_free(ctx->packet);
312 silc_socket_free(ctx->sock); /* Decrease reference counter */
317 /* Duplicate Command Context by adding reference counter. The context won't
318 be free'd untill it hits zero. */
320 SilcServerCommandContext
321 silc_server_command_dup(SilcServerCommandContext ctx)
324 SILC_LOG_DEBUG(("Command context %p refcnt %d->%d", ctx, ctx->users - 1,
329 /* Timeout for pending command. If reply to pending command never arrives
330 this is called to free resources. */
332 SILC_TASK_CALLBACK(silc_server_command_pending_timeout)
334 SilcServer server = app_context;
335 SilcServerCommandPending *reply = context;
336 SilcServerCommandReplyContext cmdr;
340 SILC_LOG_DEBUG(("Timeout pending command"));
342 /* Allocate temporary and bogus command reply context */
343 cmdr = silc_calloc(1, sizeof(*cmdr));
344 cmdr->server = server;
345 cmdr->ident = reply->ident;
347 /* Check for pending commands and mark to be exeucted */
349 silc_server_command_pending_check(server, reply->reply_cmd,
350 reply->ident, &cmdr->callbacks_count);
352 /* Create bogus command reply with an error inside */
354 silc_command_reply_payload_encode_va(reply->reply_cmd ? reply->reply_cmd :
355 SILC_COMMAND_RESERVED,
356 SILC_STATUS_ERR_TIMEDOUT, 0,
358 cmdr->payload = silc_command_payload_parse(tmpreply->data, tmpreply->len);
359 silc_buffer_free(tmpreply);
361 /* Call all callbacks. Same as SILC_SERVER_PENDING_EXEC macro. */
362 for (i = 0; i < cmdr->callbacks_count; i++)
363 if (cmdr->callbacks[i].callback)
364 (*cmdr->callbacks[i].callback)(cmdr->callbacks[i].context, cmdr);
366 silc_server_command_pending_del(server, reply->reply_cmd, reply->ident);
367 silc_server_command_reply_free(cmdr);
370 /* Add new pending command to be executed when reply to a command has been
371 received. The `reply_cmd' is the command that will call the `callback'
372 with `context' when reply has been received. It can be SILC_COMMAND_NONE
373 to match any command with the `ident'. If `ident' is non-zero
374 the `callback' will be executed when received reply with command
375 identifier `ident'. If there already exists pending command for the
376 specified command, ident, callback and context this function has no
379 bool silc_server_command_pending(SilcServer server,
380 SilcCommand reply_cmd,
382 SilcCommandCb callback,
385 return silc_server_command_pending_timed(server, reply_cmd, ident, callback,
389 /* Same as silc_server_command_pending with specific timeout for pending
390 commands. If the `timeout' is zero default timeout is used. */
392 bool silc_server_command_pending_timed(SilcServer server,
393 SilcCommand reply_cmd,
395 SilcCommandCb callback,
399 SilcServerCommandPending *reply;
401 /* Check whether identical pending already exists for same command,
402 ident, callback and callback context. If it does then it would be
403 error to register it again. */
404 silc_dlist_start(server->pending_commands);
405 while ((reply = silc_dlist_get(server->pending_commands)) != SILC_LIST_END) {
406 if (reply->reply_cmd == reply_cmd && reply->ident == ident &&
407 reply->callback == callback && reply->context == context)
411 reply = silc_calloc(1, sizeof(*reply));
412 reply->reply_cmd = reply_cmd;
413 reply->ident = ident;
414 reply->context = context;
415 reply->callback = callback;
417 silc_schedule_task_add(server->schedule, 0,
418 silc_server_command_pending_timeout, reply,
419 timeout ? timeout : 10, 0,
420 SILC_TASK_TIMEOUT, SILC_TASK_PRI_LOW);
421 silc_dlist_add(server->pending_commands, reply);
426 /* Deletes pending command by reply command type. */
428 void silc_server_command_pending_del(SilcServer server,
429 SilcCommand reply_cmd,
432 SilcServerCommandPending *r;
434 silc_dlist_start(server->pending_commands);
435 while ((r = silc_dlist_get(server->pending_commands)) != SILC_LIST_END) {
436 if ((r->reply_cmd == reply_cmd || (r->reply_cmd == SILC_COMMAND_NONE &&
438 && r->ident == ident) {
439 silc_dlist_del(server->pending_commands, r);
441 silc_schedule_task_del(server->schedule, r->timeout);
447 /* Checks for pending commands and marks callbacks to be called from
448 the command reply function. Returns TRUE if there were pending command. */
450 SilcServerCommandPendingCallbacks
451 silc_server_command_pending_check(SilcServer server,
454 SilcUInt32 *callbacks_count)
456 SilcServerCommandPending *r;
457 SilcServerCommandPendingCallbacks callbacks = NULL;
460 silc_dlist_start(server->pending_commands);
461 while ((r = silc_dlist_get(server->pending_commands)) != SILC_LIST_END) {
462 if ((r->reply_cmd == command || r->reply_cmd == SILC_COMMAND_NONE)
463 && r->ident == ident) {
464 callbacks = silc_realloc(callbacks, sizeof(*callbacks) * (i + 1));
465 callbacks[i].context = r->context;
466 callbacks[i].callback = r->callback;
467 r->reply_check = TRUE;
472 *callbacks_count = i;
476 /* Sends simple status message as command reply packet */
479 silc_server_command_send_status_reply(SilcServerCommandContext cmd,
486 SILC_LOG_DEBUG(("Sending command status %d", status));
489 silc_command_reply_payload_encode_va(command, status, error,
490 silc_command_get_ident(cmd->payload),
492 silc_server_packet_send(cmd->server, cmd->sock,
493 SILC_PACKET_COMMAND_REPLY, 0,
494 buffer->data, buffer->len, FALSE);
495 silc_buffer_free(buffer);
498 /* Sends command status reply with one extra argument. The argument
499 type must be sent as argument. */
502 silc_server_command_send_status_data(SilcServerCommandContext cmd,
507 const unsigned char *arg,
512 SILC_LOG_DEBUG(("Sending command status %d", status));
515 silc_command_reply_payload_encode_va(command, status, 0,
516 silc_command_get_ident(cmd->payload),
517 1, arg_type, arg, arg_len);
518 silc_server_packet_send(cmd->server, cmd->sock,
519 SILC_PACKET_COMMAND_REPLY, 0,
520 buffer->data, buffer->len, FALSE);
521 silc_buffer_free(buffer);
525 silc_server_command_send_status_data2(SilcServerCommandContext cmd,
529 SilcUInt32 arg_type1,
530 const unsigned char *arg1,
532 SilcUInt32 arg_type2,
533 const unsigned char *arg2,
538 SILC_LOG_DEBUG(("Sending command status %d", status));
541 silc_command_reply_payload_encode_va(command, status, 0,
542 silc_command_get_ident(cmd->payload),
543 2, arg_type1, arg1, arg_len1,
544 arg_type2, arg2, arg_len2);
545 silc_server_packet_send(cmd->server, cmd->sock,
546 SILC_PACKET_COMMAND_REPLY, 0,
547 buffer->data, buffer->len, FALSE);
548 silc_buffer_free(buffer);
551 /* This function can be called to check whether in the command reply
552 an error occurred. This function has no effect if this is called
553 when the command function was not called as pending command callback.
554 This returns TRUE if error had occurred. */
557 silc_server_command_pending_error_check(SilcServerCommandContext cmd,
558 SilcServerCommandReplyContext cmdr,
561 if (!cmd->pending || !cmdr)
564 if (!silc_command_get_status(cmdr->payload, NULL, NULL)) {
567 /* Send the same command reply payload */
568 silc_command_set_command(cmdr->payload, silc_command_get(cmd->payload));
569 silc_command_set_ident(cmdr->payload,
570 silc_command_get_ident(cmd->payload));
571 buffer = silc_command_payload_encode_payload(cmdr->payload);
572 silc_server_packet_send(cmd->server, cmd->sock,
573 SILC_PACKET_COMMAND_REPLY, 0,
574 buffer->data, buffer->len, FALSE);
575 silc_buffer_free(buffer);
582 /* Server side of command WHOIS. */
584 SILC_SERVER_CMD_FUNC(whois)
586 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
587 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_WHOIS, cmd, 1, 256);
588 silc_server_query_command(cmd->server, SILC_COMMAND_WHOIS, cmd);
589 silc_server_command_free(cmd);
592 /* Server side of command WHOWAS. */
594 SILC_SERVER_CMD_FUNC(whowas)
596 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
597 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_WHOWAS, cmd, 1, 2);
598 silc_server_query_command(cmd->server, SILC_COMMAND_WHOWAS, cmd);
599 silc_server_command_free(cmd);
602 /* Server side of command IDENTIFY. */
604 SILC_SERVER_CMD_FUNC(identify)
606 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
607 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_IDENTIFY, cmd, 1, 256);
608 silc_server_query_command(cmd->server, SILC_COMMAND_IDENTIFY, cmd);
609 silc_server_command_free(cmd);
612 /* Server side of command NICK. Sets nickname for user. Setting
613 nickname causes generation of a new client ID for the client. The
614 new client ID is sent to the client after changing the nickname. */
616 SILC_SERVER_CMD_FUNC(nick)
618 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
619 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
620 SilcServer server = cmd->server;
621 SilcBuffer packet, nidp, oidp = NULL;
622 SilcClientID *new_id;
625 SilcUInt16 ident = silc_command_get_ident(cmd->payload);
628 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT || !client)
631 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_NICK, cmd, 1, 1);
634 nick = silc_argument_get_arg_type(cmd->args, 1, &nick_len);
636 silc_server_command_send_status_reply(cmd, SILC_COMMAND_NICK,
637 SILC_STATUS_ERR_BAD_NICKNAME, 0);
642 if (silc_server_name_bad_chars(nick, nick_len) == TRUE) {
643 silc_server_command_send_status_reply(cmd, SILC_COMMAND_NICK,
644 SILC_STATUS_ERR_BAD_NICKNAME, 0);
648 /* Check for same nickname */
649 if (!strcmp(client->nickname, nick)) {
650 nidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
654 /* Create new Client ID */
655 while (!silc_id_create_client_id(cmd->server, cmd->server->id,
657 cmd->server->md5hash, nick,
661 silc_server_command_send_status_reply(cmd, SILC_COMMAND_NICK,
662 SILC_STATUS_ERR_BAD_NICKNAME, 0);
665 snprintf(&nick[strlen(nick) - 1], 1, "%d", nickfail);
668 /* Send notify about nickname change to our router. We send the new
669 ID and ask to replace it with the old one. If we are router the
670 packet is broadcasted. Send NICK_CHANGE notify. */
671 silc_server_send_notify_nick_change(server, SILC_PRIMARY_ROUTE(server),
672 SILC_BROADCAST(server), client->id,
675 /* Check if anyone is watching the old nickname */
676 if (server->server_type == SILC_ROUTER)
677 silc_server_check_watcher_list(server, client, nick,
678 SILC_NOTIFY_TYPE_NICK_CHANGE);
680 oidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
682 /* Remove old cache entry */
683 silc_idcache_del_by_context(server->local_list->clients, client);
685 silc_free(client->id);
688 silc_free(client->nickname);
689 client->nickname = strdup(nick);
691 /* Update client cache */
692 silc_idcache_add(server->local_list->clients, client->nickname,
693 client->id, (void *)client, 0, NULL);
695 nidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
697 /* Send NICK_CHANGE notify to the client's channels */
698 silc_server_send_notify_on_channels(server, NULL, client,
699 SILC_NOTIFY_TYPE_NICK_CHANGE, 3,
700 oidp->data, oidp->len,
701 nidp->data, nidp->len,
703 strlen(client->nickname));
705 /* Check if anyone is watching the new nickname */
706 if (server->server_type == SILC_ROUTER)
707 silc_server_check_watcher_list(server, client, NULL,
708 SILC_NOTIFY_TYPE_NICK_CHANGE);
711 /* Send the new Client ID as reply command back to client */
712 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_NICK,
713 SILC_STATUS_OK, 0, ident, 2,
714 2, nidp->data, nidp->len,
715 3, nick, strlen(nick));
716 silc_server_packet_send(cmd->server, cmd->sock, SILC_PACKET_COMMAND_REPLY,
717 0, packet->data, packet->len, FALSE);
719 silc_buffer_free(packet);
720 silc_buffer_free(nidp);
722 silc_buffer_free(oidp);
725 silc_server_command_free(cmd);
728 /* Sends the LIST command reply */
731 silc_server_command_list_send_reply(SilcServerCommandContext cmd,
732 SilcChannelEntry *lch,
733 SilcUInt32 lch_count,
734 SilcChannelEntry *gch,
735 SilcUInt32 gch_count)
738 SilcBuffer packet, idp;
739 SilcChannelEntry entry;
741 SilcUInt16 ident = silc_command_get_ident(cmd->payload);
743 unsigned char usercount[4];
745 int valid_lcount = 0, valid_rcount = 0;
747 for (i = 0; i < lch_count; i++) {
748 if (lch[i]->mode & SILC_CHANNEL_MODE_SECRET)
753 for (i = 0; i < gch_count; i++) {
754 if (gch[i]->mode & SILC_CHANNEL_MODE_SECRET)
760 status = SILC_STATUS_OK;
761 if ((lch_count + gch_count) > 1)
762 status = SILC_STATUS_LIST_START;
765 for (i = 0, k = 0; i < lch_count; i++) {
771 status = SILC_STATUS_LIST_ITEM;
772 if (valid_lcount > 1 && k == valid_lcount - 1 && !valid_rcount)
773 status = SILC_STATUS_LIST_END;
775 idp = silc_id_payload_encode(entry->id, SILC_ID_CHANNEL);
777 if (entry->mode & SILC_CHANNEL_MODE_PRIVATE) {
779 memset(usercount, 0, sizeof(usercount));
781 topic = entry->topic;
782 users = silc_hash_table_count(entry->user_list);
783 SILC_PUT32_MSB(users, usercount);
788 silc_command_reply_payload_encode_va(SILC_COMMAND_LIST,
790 2, idp->data, idp->len,
791 3, entry->channel_name,
792 strlen(entry->channel_name),
793 4, topic, topic ? strlen(topic) : 0,
795 silc_server_packet_send(cmd->server, cmd->sock,
796 SILC_PACKET_COMMAND_REPLY, 0, packet->data,
798 silc_buffer_free(packet);
799 silc_buffer_free(idp);
804 for (i = 0, k = 0; i < gch_count; i++) {
810 status = SILC_STATUS_LIST_ITEM;
811 if (valid_rcount > 1 && k == valid_rcount - 1)
812 status = SILC_STATUS_LIST_END;
814 idp = silc_id_payload_encode(entry->id, SILC_ID_CHANNEL);
816 if (entry->mode & SILC_CHANNEL_MODE_PRIVATE) {
818 memset(usercount, 0, sizeof(usercount));
820 topic = entry->topic;
821 users = entry->user_count;
822 SILC_PUT32_MSB(users, usercount);
827 silc_command_reply_payload_encode_va(SILC_COMMAND_LIST,
829 2, idp->data, idp->len,
830 3, entry->channel_name,
831 strlen(entry->channel_name),
832 4, topic, topic ? strlen(topic) : 0,
834 silc_server_packet_send(cmd->server, cmd->sock,
835 SILC_PACKET_COMMAND_REPLY, 0, packet->data,
837 silc_buffer_free(packet);
838 silc_buffer_free(idp);
843 /* Server side of LIST command. This lists the channel of the requested
844 server. Secret channels are not listed. */
846 SILC_SERVER_CMD_FUNC(list)
848 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
849 SilcServer server = cmd->server;
850 SilcChannelID *channel_id = NULL;
853 SilcChannelEntry *lchannels = NULL, *gchannels = NULL;
854 SilcUInt32 lch_count = 0, gch_count = 0;
856 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_LIST, cmd, 0, 1);
858 /* If we are normal server, send the command to router, since we
859 want to know all channels in the network. */
860 if (!cmd->pending && server->server_type != SILC_ROUTER &&
861 !server->standalone) {
863 SilcUInt16 old_ident;
865 old_ident = silc_command_get_ident(cmd->payload);
866 silc_command_set_ident(cmd->payload, ++server->cmd_ident);
867 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
868 silc_server_packet_send(server, SILC_PRIMARY_ROUTE(server),
869 SILC_PACKET_COMMAND, cmd->packet->flags,
870 tmpbuf->data, tmpbuf->len, TRUE);
872 /* Reprocess this packet after received reply from router */
873 silc_server_command_pending(server, SILC_COMMAND_LIST,
874 silc_command_get_ident(cmd->payload),
875 silc_server_command_list,
876 silc_server_command_dup(cmd));
878 silc_command_set_ident(cmd->payload, old_ident);
879 silc_buffer_free(tmpbuf);
884 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
886 channel_id = silc_id_payload_parse_id(tmp, tmp_len, NULL);
888 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LIST,
889 SILC_STATUS_ERR_NO_CHANNEL_ID, 0);
894 /* Get the channels from local list */
895 lchannels = silc_idlist_get_channels(server->local_list, channel_id,
898 /* Get the channels from global list */
899 gchannels = silc_idlist_get_channels(server->global_list, channel_id,
903 silc_server_command_list_send_reply(cmd, lchannels, lch_count,
904 gchannels, gch_count);
906 silc_free(lchannels);
907 silc_free(gchannels);
910 silc_server_command_free(cmd);
913 /* Server side of TOPIC command. Sets topic for channel and/or returns
914 current topic to client. */
916 SILC_SERVER_CMD_FUNC(topic)
918 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
919 SilcServer server = cmd->server;
920 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
921 SilcChannelID *channel_id;
922 SilcChannelEntry channel;
923 SilcChannelClientEntry chl;
924 SilcBuffer packet, idp;
926 SilcUInt32 argc, tmp_len;
927 SilcUInt16 ident = silc_command_get_ident(cmd->payload);
929 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT || !client)
932 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_TOPIC, cmd, 1, 2);
934 argc = silc_argument_get_arg_num(cmd->args);
937 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
939 silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
940 SILC_STATUS_ERR_NO_CHANNEL_ID, 0);
943 channel_id = silc_id_payload_parse_id(tmp, tmp_len, NULL);
945 silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
946 SILC_STATUS_ERR_NO_CHANNEL_ID, 0);
950 /* Check whether the channel exists */
951 channel = silc_idlist_find_channel_by_id(server->local_list,
954 channel = silc_idlist_find_channel_by_id(server->global_list,
957 silc_server_command_send_status_data(cmd, SILC_COMMAND_TOPIC,
958 SILC_STATUS_ERR_NO_SUCH_CHANNEL_ID,
966 tmp = silc_argument_get_arg_type(cmd->args, 2, NULL);
968 silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
969 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
974 if (strlen(tmp) > 256) {
975 silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
976 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
981 /* See whether the client is on channel and has rights to change topic */
982 if (!silc_server_client_on_channel(client, channel, &chl)) {
983 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
984 silc_server_command_send_status_data(cmd, SILC_COMMAND_TOPIC,
985 SILC_STATUS_ERR_NOT_ON_CHANNEL,
990 if (channel->mode & SILC_CHANNEL_MODE_TOPIC &&
991 !(chl->mode & SILC_CHANNEL_UMODE_CHANOP) &&
992 !(chl->mode & SILC_CHANNEL_UMODE_CHANFO)) {
993 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
994 silc_server_command_send_status_data(cmd, SILC_COMMAND_TOPIC,
995 SILC_STATUS_ERR_NO_CHANNEL_PRIV,
1000 if (!channel->topic || strcmp(channel->topic, tmp)) {
1001 /* Set the topic for channel */
1002 silc_free(channel->topic);
1003 channel->topic = strdup(tmp);
1005 /* Send TOPIC_SET notify type to the network */
1006 silc_server_send_notify_topic_set(server, SILC_PRIMARY_ROUTE(server),
1007 SILC_BROADCAST(server), channel,
1008 client->id, SILC_ID_CLIENT,
1011 /* Send notify about topic change to all clients on the channel */
1012 idp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
1013 silc_server_send_notify_to_channel(server, NULL, channel, FALSE, TRUE,
1014 SILC_NOTIFY_TYPE_TOPIC_SET, 2,
1015 idp->data, idp->len,
1017 strlen(channel->topic));
1018 silc_buffer_free(idp);
1022 /* Send the topic to client as reply packet */
1023 idp = silc_id_payload_encode(channel_id, SILC_ID_CHANNEL);
1024 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_TOPIC,
1025 SILC_STATUS_OK, 0, ident, 2,
1026 2, idp->data, idp->len,
1029 strlen(channel->topic) : 0);
1030 silc_server_packet_send(cmd->server, cmd->sock, SILC_PACKET_COMMAND_REPLY,
1031 0, packet->data, packet->len, FALSE);
1033 silc_buffer_free(packet);
1034 silc_buffer_free(idp);
1035 silc_free(channel_id);
1038 silc_server_command_free(cmd);
1041 /* Server side of INVITE command. Invites some client to join some channel.
1042 This command is also used to manage the invite list of the channel. */
1044 SILC_SERVER_CMD_FUNC(invite)
1046 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
1047 SilcServer server = cmd->server;
1048 SilcSocketConnection sock = cmd->sock, dest_sock;
1049 SilcChannelClientEntry chl;
1050 SilcClientEntry sender, dest;
1051 SilcClientID *dest_id = NULL;
1052 SilcChannelEntry channel;
1053 SilcChannelID *channel_id = NULL;
1054 SilcIDListData idata;
1055 SilcArgumentPayload args;
1056 SilcHashTableList htl;
1057 SilcBuffer packet, list, tmp2;
1058 SilcBufferStruct alist;
1059 unsigned char *tmp, *atype = NULL;
1060 SilcUInt32 len, type, len2;
1061 SilcUInt16 argc = 0, ident = silc_command_get_ident(cmd->payload);
1063 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_INVITE, cmd, 1, 4);
1065 /* Get Channel ID */
1066 tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
1068 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
1069 SILC_STATUS_ERR_NO_CHANNEL_ID, 0);
1072 channel_id = silc_id_payload_parse_id(tmp, len, NULL);
1074 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
1075 SILC_STATUS_ERR_NO_CHANNEL_ID, 0);
1079 /* Get the channel entry */
1080 channel = silc_idlist_find_channel_by_id(server->local_list,
1083 channel = silc_idlist_find_channel_by_id(server->global_list,
1086 silc_server_command_send_status_data(cmd, SILC_COMMAND_INVITE,
1087 SILC_STATUS_ERR_NO_SUCH_CHANNEL_ID,
1093 /* Check whether the sender of this command is on the channel. */
1094 sender = (SilcClientEntry)sock->user_data;
1095 if (!sender || !silc_server_client_on_channel(sender, channel, &chl)) {
1096 silc_server_command_send_status_data(cmd, SILC_COMMAND_INVITE,
1097 SILC_STATUS_ERR_NOT_ON_CHANNEL, 0,
1102 /* Check whether the channel is invite-only channel. If yes then the
1103 sender of this command must be at least channel operator. */
1104 if (channel->mode & SILC_CHANNEL_MODE_INVITE &&
1105 !(chl->mode & SILC_CHANNEL_UMODE_CHANOP) &&
1106 !(chl->mode & SILC_CHANNEL_UMODE_CHANFO)) {
1107 silc_server_command_send_status_data(cmd, SILC_COMMAND_INVITE,
1108 SILC_STATUS_ERR_NO_CHANNEL_PRIV,
1113 /* Get destination client ID */
1114 tmp = silc_argument_get_arg_type(cmd->args, 2, &len);
1118 dest_id = silc_id_payload_parse_id(tmp, len, NULL);
1120 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
1121 SILC_STATUS_ERR_NO_CLIENT_ID, 0);
1125 /* Get the client entry */
1126 dest = silc_server_query_client(server, dest_id, FALSE, &resolve);
1128 if (server->server_type != SILC_SERVER || !resolve || cmd->pending) {
1129 silc_server_command_send_status_data(
1130 cmd, SILC_COMMAND_INVITE,
1131 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID, 0,
1136 /* The client info is being resolved. Reprocess this packet after
1137 receiving the reply to the query. */
1138 silc_server_command_pending(server, SILC_COMMAND_WHOIS,
1140 silc_server_command_invite,
1141 silc_server_command_dup(cmd));
1142 cmd->pending = TRUE;
1146 /* Check whether the requested client is already on the channel. */
1147 if (silc_server_client_on_channel(dest, channel, NULL)) {
1148 atype = silc_argument_get_arg_type(cmd->args, 1, &len2);
1149 silc_server_command_send_status_data2(cmd, SILC_COMMAND_INVITE,
1150 SILC_STATUS_ERR_USER_ON_CHANNEL,
1156 /* Get route to the client */
1157 dest_sock = silc_server_get_client_route(server, NULL, 0, dest_id,
1160 silc_server_command_send_status_data(cmd, SILC_COMMAND_INVITE,
1161 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID,
1166 /* Add the client to the invite list */
1168 /* Allocate hash table for invite list if it doesn't exist yet */
1169 if (!channel->invite_list)
1170 channel->invite_list =
1171 silc_hash_table_alloc(0, silc_hash_ptr,
1173 silc_server_inviteban_destruct, channel, TRUE);
1175 /* Check if the ID is in the list already */
1176 silc_hash_table_list(channel->invite_list, &htl);
1177 while (silc_hash_table_get(&htl, (void *)&type, (void *)&tmp2)) {
1178 if (type == 3 && !memcmp(tmp2->data, tmp, len)) {
1183 silc_hash_table_list_reset(&htl);
1185 /* Add new Client ID to invite list */
1187 list = silc_buffer_alloc_size(len);
1188 silc_buffer_put(list, tmp, len);
1189 silc_hash_table_add(channel->invite_list, (void *)3, list);
1192 if (!(dest->mode & SILC_UMODE_BLOCK_INVITE)) {
1193 /* Send notify to the client that is invited to the channel */
1194 SilcBuffer idp, idp2;
1195 idp = silc_id_payload_encode(channel_id, SILC_ID_CHANNEL);
1196 idp2 = silc_id_payload_encode(sender->id, SILC_ID_CLIENT);
1197 silc_server_send_notify_dest(server, dest_sock, FALSE, dest_id,
1199 SILC_NOTIFY_TYPE_INVITE, 3,
1200 idp->data, idp->len,
1201 channel->channel_name,
1202 strlen(channel->channel_name),
1203 idp2->data, idp2->len);
1204 silc_buffer_free(idp);
1205 silc_buffer_free(idp2);
1209 /* Get the invite information */
1210 tmp = silc_argument_get_arg_type(cmd->args, 4, &len2);
1211 if (tmp && len2 > 2) {
1212 /* Parse the arguments to see they are constructed correctly */
1213 SILC_GET16_MSB(argc, tmp);
1214 args = silc_argument_payload_parse(tmp + 2, len2 - 2, argc);
1216 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
1217 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
1222 /* Get the type of action */
1223 atype = silc_argument_get_arg_type(cmd->args, 3, &len);
1224 if (atype && len == 1) {
1225 if (atype[0] == 0x00) {
1226 /* Allocate hash table for invite list if it doesn't exist yet */
1227 if (!channel->invite_list)
1228 channel->invite_list =
1229 silc_hash_table_alloc(0, silc_hash_ptr,
1231 silc_server_inviteban_destruct, channel,
1234 /* Check for resource limit */
1235 if (silc_hash_table_count(channel->invite_list) > 64) {
1236 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
1237 SILC_STATUS_ERR_RESOURCE_LIMIT,
1243 /* Now add or delete the information. */
1244 silc_server_inviteban_process(server, channel->invite_list,
1245 (SilcUInt8)atype[0], args);
1247 silc_argument_payload_free(args);
1250 /* Encode invite list */
1252 if (channel->invite_list && silc_hash_table_count(channel->invite_list)) {
1253 list = silc_buffer_alloc_size(2);
1254 silc_buffer_format(list,
1255 SILC_STR_UI_SHORT(silc_hash_table_count(
1256 channel->invite_list)),
1258 silc_hash_table_list(channel->invite_list, &htl);
1259 while (silc_hash_table_get(&htl, (void *)&type, (void *)&tmp2))
1260 list = silc_argument_payload_encode_one(list, tmp2->data, tmp2->len,
1262 silc_hash_table_list_reset(&htl);
1265 /* The notify is sent to local servers (not clients), and to network. */
1266 if (atype && tmp && len2) {
1267 silc_buffer_set(&alist, tmp, len2);
1269 /* Send to local servers if we are router */
1270 if (server->server_type == SILC_ROUTER) {
1271 SilcBuffer idp, idp2;
1272 idp = silc_id_payload_encode(channel_id, SILC_ID_CHANNEL);
1273 idp2 = silc_id_payload_encode(sender->id, SILC_ID_CLIENT);
1274 silc_server_send_notify_to_channel(server, NULL, channel, FALSE, FALSE,
1275 SILC_NOTIFY_TYPE_INVITE, 5,
1276 idp->data, idp->len,
1277 channel->channel_name,
1278 strlen(channel->channel_name),
1279 idp2->data, idp2->len,
1281 tmp ? alist.data : NULL,
1282 tmp ? alist.len : 0);
1283 silc_buffer_free(idp);
1284 silc_buffer_free(idp2);
1287 /* Send to network */
1288 silc_server_send_notify_invite(server, SILC_PRIMARY_ROUTE(server),
1289 SILC_BROADCAST(server), channel,
1291 tmp ? &alist : NULL);
1294 /* Send invite list back only if the list was modified, or no arguments
1297 argc = silc_argument_get_arg_num(cmd->args);
1300 if (silc_argument_get_arg_type(cmd->args, 3, &len))
1303 /* Send command reply */
1304 tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
1305 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_INVITE,
1306 SILC_STATUS_OK, 0, ident, 2,
1310 type && list ? list->len : 0);
1311 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
1312 packet->data, packet->len, FALSE);
1313 silc_buffer_free(packet);
1314 silc_buffer_free(list);
1318 silc_free(channel_id);
1319 silc_server_command_free(cmd);
1323 SilcSocketConnection sock;
1327 /* Quits connection to client. This gets called if client won't
1328 close the connection even when it has issued QUIT command. */
1330 SILC_TASK_CALLBACK(silc_server_command_quit_cb)
1332 SilcServer server = app_context;
1333 QuitInternal q = (QuitInternal)context;
1335 if (q->sock->user_data) {
1336 /* Free all client specific data, such as client entry and entires
1337 on channels this client may be on. */
1338 silc_server_free_client_data(server, q->sock, q->sock->user_data,
1340 q->sock->user_data = NULL;
1343 if (!SILC_IS_DISCONNECTED(q->sock))
1344 /* Close the connection on our side */
1345 silc_server_close_connection(server, q->sock);
1347 silc_socket_free(q->sock);
1348 silc_free(q->signoff);
1352 /* Quits SILC session. This is the normal way to disconnect client. */
1354 SILC_SERVER_CMD_FUNC(quit)
1356 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
1357 SilcServer server = cmd->server;
1358 SilcSocketConnection sock = cmd->sock;
1360 unsigned char *tmp = NULL;
1363 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_QUIT, cmd, 0, 1);
1365 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
1369 tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
1373 q = silc_calloc(1, sizeof(*q));
1374 q->sock = silc_socket_dup(sock);
1375 q->signoff = tmp ? strdup(tmp) : NULL;
1377 /* We quit the connection with little timeout */
1378 silc_schedule_task_add(server->schedule, sock->sock,
1379 silc_server_command_quit_cb, (void *)q,
1380 0, 200000, SILC_TASK_TIMEOUT, SILC_TASK_PRI_LOW);
1383 silc_server_command_free(cmd);
1386 /* Server side of command KILL. This command is used by router operator
1387 to remove an client from the SILC Network temporarily. */
1389 SILC_SERVER_CMD_FUNC(kill)
1391 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
1392 SilcServer server = cmd->server;
1393 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
1394 SilcClientEntry remote_client;
1395 SilcClientID *client_id = NULL;
1396 unsigned char *tmp, *comment, *auth;
1397 SilcUInt32 tmp_len, tmp_len2, auth_len;
1399 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_KILL, cmd, 1, 3);
1401 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT || !client)
1404 /* Get authentication payload if present */
1405 auth = silc_argument_get_arg_type(cmd->args, 3, &auth_len);
1408 /* Router operator killing */
1410 /* KILL command works only on router */
1411 if (server->server_type != SILC_ROUTER) {
1412 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
1413 SILC_STATUS_ERR_NO_ROUTER_PRIV, 0);
1417 /* Check whether client has the permissions. */
1418 if (!(client->mode & SILC_UMODE_ROUTER_OPERATOR)) {
1419 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
1420 SILC_STATUS_ERR_NO_ROUTER_PRIV, 0);
1425 /* Get the client ID */
1426 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
1428 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
1429 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
1433 client_id = silc_id_payload_parse_id(tmp, tmp_len, NULL);
1435 silc_server_command_send_status_data(cmd, SILC_COMMAND_KILL,
1436 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID,
1437 0, 2, tmp, tmp_len);
1441 /* Get the client entry */
1442 remote_client = silc_idlist_find_client_by_id(server->local_list,
1443 client_id, TRUE, NULL);
1444 if (!remote_client) {
1445 remote_client = silc_idlist_find_client_by_id(server->global_list,
1446 client_id, TRUE, NULL);
1447 if (!remote_client) {
1448 silc_server_command_send_status_data(cmd, SILC_COMMAND_KILL,
1449 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID,
1450 0, 2, tmp, tmp_len);
1456 comment = silc_argument_get_arg_type(cmd->args, 2, &tmp_len2);
1457 if (comment && tmp_len2 > 128) {
1459 comment[127] = '\0';
1462 /* If authentication data is provided then verify that killing is
1464 if (auth && auth_len) {
1465 SilcSocketConnection sock;
1467 if (!SILC_IS_LOCAL(remote_client) || !remote_client->data.public_key) {
1468 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
1469 SILC_STATUS_ERR_OPERATION_ALLOWED,
1474 /* Verify the signature */
1475 if (!silc_auth_verify_data(auth, auth_len, SILC_AUTH_PUBLIC_KEY,
1476 remote_client->data.public_key, 0,
1477 server->sha1hash, remote_client->id,
1479 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
1480 SILC_STATUS_ERR_AUTH_FAILED, 0);
1484 /* Send reply to the sender */
1485 silc_server_command_send_status_data(cmd, SILC_COMMAND_KILL,
1489 /* Do normal signoff for the destination client */
1490 sock = remote_client->connection;
1491 silc_server_remove_from_channels(server, NULL, remote_client,
1492 TRUE, (char *)"Killed", TRUE, TRUE);
1493 silc_server_free_client_data(server, NULL, remote_client, TRUE,
1495 (unsigned char *)"Killed");
1497 silc_server_close_connection(server, sock);
1499 /* Router operator killing */
1501 /* Send reply to the sender */
1502 silc_server_command_send_status_data(cmd, SILC_COMMAND_KILL,
1506 /* Check if anyone is watching this nickname */
1507 if (server->server_type == SILC_ROUTER)
1508 silc_server_check_watcher_list(server, client, NULL,
1509 SILC_NOTIFY_TYPE_KILLED);
1511 /* Now do the killing */
1512 silc_server_kill_client(server, remote_client, comment, client->id,
1517 silc_free(client_id);
1518 silc_server_command_free(cmd);
1521 /* Server side of command INFO. This sends information about us to
1522 the client. If client requested specific server we will send the
1523 command to that server. */
1525 SILC_SERVER_CMD_FUNC(info)
1527 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
1528 SilcServer server = cmd->server;
1529 SilcBuffer packet, idp;
1532 char *dest_server, *server_info = NULL, *server_name;
1533 SilcUInt16 ident = silc_command_get_ident(cmd->payload);
1534 SilcServerEntry entry = NULL;
1535 SilcServerID *server_id = NULL;
1537 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_INFO, cmd, 0, 2);
1539 /* Get server name */
1540 dest_server = silc_argument_get_arg_type(cmd->args, 1, NULL);
1543 tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
1545 server_id = silc_id_payload_parse_id(tmp, tmp_len, NULL);
1547 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INFO,
1548 SILC_STATUS_ERR_NO_SERVER_ID, 0);
1554 /* Check whether we have this server cached */
1555 entry = silc_idlist_find_server_by_id(server->local_list,
1556 server_id, TRUE, NULL);
1558 entry = silc_idlist_find_server_by_id(server->global_list,
1559 server_id, TRUE, NULL);
1560 if (!entry && server->server_type != SILC_SERVER) {
1561 silc_server_command_send_status_data(cmd, SILC_COMMAND_INFO,
1562 SILC_STATUS_ERR_NO_SUCH_SERVER_ID,
1563 0, 2, tmp, tmp_len);
1569 /* Some buggy servers has sent request to router about themselves. */
1570 if (server->server_type != SILC_SERVER && cmd->sock->user_data == entry)
1573 if ((!dest_server && !server_id && !entry) || (entry &&
1574 entry == server->id_entry) ||
1575 (dest_server && !cmd->pending &&
1576 !strncasecmp(dest_server, server->server_name, strlen(dest_server)))) {
1577 /* Send our reply */
1578 char info_string[256];
1580 memset(info_string, 0, sizeof(info_string));
1581 snprintf(info_string, sizeof(info_string),
1582 "location: %s server: %s admin: %s <%s>",
1583 server->config->server_info->location,
1584 server->config->server_info->server_type,
1585 server->config->server_info->admin,
1586 server->config->server_info->email);
1588 server_info = info_string;
1589 entry = server->id_entry;
1591 /* Check whether we have this server cached */
1592 if (!entry && dest_server) {
1593 entry = silc_idlist_find_server_by_name(server->global_list,
1594 dest_server, TRUE, NULL);
1596 entry = silc_idlist_find_server_by_name(server->local_list,
1597 dest_server, TRUE, NULL);
1601 if (!cmd->pending &&
1602 server->server_type != SILC_SERVER && entry && !entry->server_info) {
1603 /* Send to the server */
1605 SilcUInt16 old_ident;
1607 old_ident = silc_command_get_ident(cmd->payload);
1608 silc_command_set_ident(cmd->payload, ++server->cmd_ident);
1609 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
1611 silc_server_packet_send(server, entry->connection,
1612 SILC_PACKET_COMMAND, cmd->packet->flags,
1613 tmpbuf->data, tmpbuf->len, TRUE);
1615 /* Reprocess this packet after received reply from router */
1616 silc_server_command_pending(server, SILC_COMMAND_INFO,
1617 silc_command_get_ident(cmd->payload),
1618 silc_server_command_info,
1619 silc_server_command_dup(cmd));
1620 cmd->pending = TRUE;
1621 silc_command_set_ident(cmd->payload, old_ident);
1622 silc_buffer_free(tmpbuf);
1626 if (!entry && !cmd->pending && !server->standalone) {
1627 /* Send to the primary router */
1629 SilcUInt16 old_ident;
1631 old_ident = silc_command_get_ident(cmd->payload);
1632 silc_command_set_ident(cmd->payload, ++server->cmd_ident);
1633 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
1635 silc_server_packet_send(server, SILC_PRIMARY_ROUTE(server),
1636 SILC_PACKET_COMMAND, cmd->packet->flags,
1637 tmpbuf->data, tmpbuf->len, TRUE);
1639 /* Reprocess this packet after received reply from router */
1640 silc_server_command_pending(server, SILC_COMMAND_INFO,
1641 silc_command_get_ident(cmd->payload),
1642 silc_server_command_info,
1643 silc_server_command_dup(cmd));
1644 cmd->pending = TRUE;
1645 silc_command_set_ident(cmd->payload, old_ident);
1646 silc_buffer_free(tmpbuf);
1651 silc_free(server_id);
1655 silc_server_command_send_status_data(cmd, SILC_COMMAND_INFO,
1656 SILC_STATUS_ERR_NO_SUCH_SERVER, 0,
1658 strlen(dest_server));
1662 idp = silc_id_payload_encode(entry->id, SILC_ID_SERVER);
1664 server_info = entry->server_info;
1665 server_name = entry->server_name;
1667 /* Send the reply */
1668 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_INFO,
1669 SILC_STATUS_OK, 0, ident, 3,
1670 2, idp->data, idp->len,
1672 strlen(server_name),
1675 strlen(server_info) : 0);
1676 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
1677 packet->data, packet->len, FALSE);
1679 silc_buffer_free(packet);
1680 silc_buffer_free(idp);
1683 silc_server_command_free(cmd);
1686 /* Server side of command PING. This just replies to the ping. */
1688 SILC_SERVER_CMD_FUNC(ping)
1690 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
1691 SilcServer server = cmd->server;
1694 SilcServerID *server_id = NULL;
1696 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_PING, cmd, 1, 1);
1699 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
1701 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PING,
1702 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
1706 server_id = silc_id_payload_parse_id(tmp, tmp_len, NULL);
1710 if (SILC_ID_SERVER_COMPARE(server_id, server->id)) {
1711 /* Send our reply */
1712 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PING,
1715 silc_server_command_send_status_data(cmd, SILC_COMMAND_PING,
1716 SILC_STATUS_ERR_NO_SUCH_SERVER_ID, 0,
1722 silc_free(server_id);
1723 silc_server_command_free(cmd);
1726 /* Server side of command STATS. */
1728 SILC_SERVER_CMD_FUNC(stats)
1730 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
1731 SilcServer server = cmd->server;
1732 SilcServerID *server_id;
1735 SilcBuffer packet, stats;
1736 SilcUInt16 ident = silc_command_get_ident(cmd->payload);
1739 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_STATS, cmd, 1, 1);
1742 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
1744 silc_server_command_send_status_reply(cmd, SILC_COMMAND_STATS,
1745 SILC_STATUS_ERR_NO_SERVER_ID, 0);
1748 server_id = silc_id_payload_parse_id(tmp, tmp_len, NULL);
1752 /* The ID must be ours */
1753 if (!SILC_ID_SERVER_COMPARE(server->id, server_id)) {
1754 silc_server_command_send_status_data(cmd, SILC_COMMAND_STATS,
1755 SILC_STATUS_ERR_NO_SUCH_SERVER_ID, 0,
1757 silc_free(server_id);
1760 silc_free(server_id);
1762 /* If we are router then just send everything we got. If we are normal
1763 server then we'll send this to our router to get all the latest
1764 statistical information. */
1765 if (!cmd->pending && server->server_type != SILC_ROUTER &&
1766 !server->standalone) {
1767 /* Send request to our router */
1768 SilcBuffer idp = silc_id_payload_encode(server->router->id,
1770 packet = silc_command_payload_encode_va(SILC_COMMAND_STATS,
1771 ++server->cmd_ident, 1,
1772 1, idp->data, idp->len);
1773 silc_server_packet_send(server, SILC_PRIMARY_ROUTE(server),
1774 SILC_PACKET_COMMAND, 0, packet->data,
1775 packet->len, FALSE);
1777 /* Reprocess this packet after received reply from router */
1778 silc_server_command_pending(server, SILC_COMMAND_STATS,
1780 silc_server_command_stats,
1781 silc_server_command_dup(cmd));
1782 cmd->pending = TRUE;
1783 silc_buffer_free(packet);
1784 silc_buffer_free(idp);
1788 /* Send our reply to sender */
1789 uptime = time(NULL) - server->starttime;
1791 stats = silc_buffer_alloc_size(60);
1792 silc_buffer_format(stats,
1793 SILC_STR_UI_INT(server->starttime),
1794 SILC_STR_UI_INT(uptime),
1795 SILC_STR_UI_INT(server->stat.my_clients),
1796 SILC_STR_UI_INT(server->stat.my_channels),
1797 SILC_STR_UI_INT(server->stat.my_server_ops),
1798 SILC_STR_UI_INT(server->stat.my_router_ops),
1799 SILC_STR_UI_INT(server->stat.cell_clients),
1800 SILC_STR_UI_INT(server->stat.cell_channels),
1801 SILC_STR_UI_INT(server->stat.cell_servers),
1802 SILC_STR_UI_INT(server->stat.clients),
1803 SILC_STR_UI_INT(server->stat.channels),
1804 SILC_STR_UI_INT(server->stat.servers),
1805 SILC_STR_UI_INT(server->stat.routers),
1806 SILC_STR_UI_INT(server->stat.server_ops),
1807 SILC_STR_UI_INT(server->stat.router_ops),
1810 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_STATS,
1811 SILC_STATUS_OK, 0, ident, 2,
1813 3, stats->data, stats->len);
1814 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY,
1815 0, packet->data, packet->len, FALSE);
1816 silc_buffer_free(packet);
1817 silc_buffer_free(stats);
1820 silc_server_command_free(cmd);
1823 /* Internal routine to join channel. The channel sent to this function
1824 has been either created or resolved from ID lists. This joins the sent
1825 client to the channel. */
1827 static void silc_server_command_join_channel(SilcServer server,
1828 SilcServerCommandContext cmd,
1829 SilcChannelEntry channel,
1830 SilcClientID *client_id,
1834 const unsigned char *auth,
1835 SilcUInt32 auth_len,
1836 const unsigned char *cauth,
1837 SilcUInt32 cauth_len)
1839 SilcSocketConnection sock = cmd->sock;
1841 SilcUInt32 tmp_len, user_count;
1842 unsigned char *passphrase = NULL, mode[4], tmp2[4], tmp3[4];
1843 SilcClientEntry client;
1844 SilcChannelClientEntry chl;
1845 SilcBuffer reply, chidp, clidp, keyp = NULL;
1846 SilcBuffer user_list, mode_list, invite_list, ban_list;
1847 SilcUInt16 ident = silc_command_get_ident(cmd->payload);
1848 char check[512], check2[512];
1849 bool founder = FALSE;
1851 SilcBuffer fkey = NULL, chpklist = NULL;
1854 SILC_LOG_DEBUG(("Joining client to channel"));
1859 /* Get the client entry */
1860 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT) {
1861 client = (SilcClientEntry)sock->user_data;
1865 client = silc_server_query_client(server, client_id, FALSE,
1868 if (!resolve || cmd->pending) {
1869 silc_server_command_send_status_reply(
1870 cmd, SILC_COMMAND_JOIN,
1871 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS, 0);
1875 /* The client info is being resolved. Reprocess this packet after
1876 receiving the reply to the query. */
1877 silc_server_command_pending(server, SILC_COMMAND_WHOIS,
1879 silc_server_command_join,
1880 silc_server_command_dup(cmd));
1881 cmd->pending = TRUE;
1885 if (!client->data.public_key &&
1886 (auth || cauth || channel->ban_list ||
1887 (channel->mode & SILC_CHANNEL_MODE_INVITE))) {
1888 if (cmd->pending == 2)
1891 /* We must retrieve the client's public key by sending
1892 GETKEY command. Reprocess this packet after receiving the key */
1893 clidp = silc_id_payload_encode(client_id, SILC_ID_CLIENT);
1894 silc_server_send_command(server, cmd->sock,
1895 SILC_COMMAND_GETKEY, ++server->cmd_ident,
1896 1, 1, clidp->data, clidp->len);
1897 silc_buffer_free(clidp);
1898 silc_server_command_pending(server, SILC_COMMAND_GETKEY,
1900 silc_server_command_join,
1901 silc_server_command_dup(cmd));
1906 cmd->pending = FALSE;
1910 * Check founder auth payload if provided. If client can gain founder
1911 * privileges it can override various conditions on joining the channel,
1912 * and can have directly the founder mode set on the channel.
1914 if (auth && auth_len && channel->mode & SILC_CHANNEL_MODE_FOUNDER_AUTH) {
1915 SilcIDListData idata = (SilcIDListData)client;
1916 SilcChannelClientEntry chl2;
1917 SilcHashTableList htl;
1919 if (channel->founder_key && idata->public_key &&
1920 silc_pkcs_public_key_compare(channel->founder_key,
1921 idata->public_key)) {
1922 /* Check whether the client is to become founder */
1923 if (silc_auth_verify_data(auth, auth_len, SILC_AUTH_PUBLIC_KEY,
1924 channel->founder_key, 0, server->sha1hash,
1925 client->id, SILC_ID_CLIENT)) {
1927 /* There cannot be anyone else as founder on the channel now. This
1928 client is definitely the founder due to this authentication */
1929 silc_hash_table_list(channel->user_list, &htl);
1930 while (silc_hash_table_get(&htl, NULL, (void *)&chl2))
1931 if (chl2->mode & SILC_CHANNEL_UMODE_CHANFO) {
1932 chl2->mode &= ~SILC_CHANNEL_UMODE_CHANFO;
1933 silc_server_force_cumode_change(server, NULL, channel, chl2,
1937 silc_hash_table_list_reset(&htl);
1939 umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
1946 * Check channel modes
1950 memset(check, 0, sizeof(check));
1951 memset(check2, 0, sizeof(check2));
1952 silc_strncat(check, sizeof(check),
1953 client->nickname, strlen(client->nickname));
1954 silc_strncat(check, sizeof(check), "!", 1);
1955 silc_strncat(check, sizeof(check),
1956 client->username, strlen(client->username));
1957 if (!strchr(client->username, '@')) {
1958 silc_strncat(check, sizeof(check), "@", 1);
1959 silc_strncat(check, sizeof(check),
1960 cmd->sock->hostname, strlen(cmd->sock->hostname));
1963 silc_strncat(check2, sizeof(check2),
1964 client->nickname, strlen(client->nickname));
1965 if (!strchr(client->nickname, '@')) {
1966 silc_strncat(check2, sizeof(check2), "@", 1);
1967 silc_strncat(check2, sizeof(check2),
1968 server->server_name, strlen(server->server_name));
1970 silc_strncat(check2, sizeof(check2), "!", 1);
1971 silc_strncat(check2, sizeof(check2),
1972 client->username, strlen(client->username));
1973 if (!strchr(client->username, '@')) {
1974 silc_strncat(check2, sizeof(check2), "@", 1);
1975 silc_strncat(check2, sizeof(check2),
1976 cmd->sock->hostname, strlen(cmd->sock->hostname));
1979 /* Check invite list if channel is invite-only channel */
1980 if (channel->mode & SILC_CHANNEL_MODE_INVITE) {
1981 if (!channel->invite_list ||
1982 !silc_hash_table_count(channel->invite_list) ||
1983 (!silc_server_inviteban_match(server, channel->invite_list,
1985 !silc_server_inviteban_match(server, channel->invite_list,
1986 2, client->data.public_key) &&
1987 !silc_server_inviteban_match(server, channel->invite_list,
1988 1, client->nickname) &&
1989 !silc_server_inviteban_match(server, channel->invite_list,
1991 !silc_server_inviteban_match(server, channel->invite_list,
1993 chidp = silc_id_payload_encode(channel->id, SILC_ID_CHANNEL);
1994 silc_server_command_send_status_data(cmd, SILC_COMMAND_JOIN,
1995 SILC_STATUS_ERR_NOT_INVITED, 0,
1996 2, chidp->data, chidp->len);
1997 silc_buffer_free(chidp);
2002 /* Check ban list if it exists. If the client's nickname, server,
2003 username and/or hostname is in the ban list the access to the
2004 channel is denied. */
2005 if (channel->ban_list && silc_hash_table_count(channel->ban_list)) {
2006 if (silc_server_inviteban_match(server, channel->ban_list,
2008 silc_server_inviteban_match(server, channel->ban_list,
2009 2, client->data.public_key) ||
2010 silc_server_inviteban_match(server, channel->ban_list,
2011 1, client->nickname) ||
2012 silc_server_inviteban_match(server, channel->ban_list,
2014 silc_server_inviteban_match(server, channel->ban_list,
2016 chidp = silc_id_payload_encode(channel->id, SILC_ID_CHANNEL);
2017 silc_server_command_send_status_data(
2018 cmd, SILC_COMMAND_JOIN,
2019 SILC_STATUS_ERR_BANNED_FROM_CHANNEL, 0,
2020 2, chidp->data, chidp->len);
2021 silc_buffer_free(chidp);
2026 /* Check user count limit if set. */
2027 if (channel->mode & SILC_CHANNEL_MODE_ULIMIT) {
2028 if (silc_hash_table_count(channel->user_list) + 1 >
2029 channel->user_limit) {
2030 chidp = silc_id_payload_encode(channel->id, SILC_ID_CHANNEL);
2031 silc_server_command_send_status_data(cmd, SILC_COMMAND_JOIN,
2032 SILC_STATUS_ERR_CHANNEL_IS_FULL,
2033 0, 2, chidp->data, chidp->len);
2034 silc_buffer_free(chidp);
2040 /* Check the channel passphrase if set. */
2041 if (channel->mode & SILC_CHANNEL_MODE_PASSPHRASE) {
2042 /* Get passphrase */
2043 tmp = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
2045 passphrase = silc_memdup(tmp, tmp_len);
2047 if (!passphrase || !channel->passphrase ||
2048 memcmp(passphrase, channel->passphrase, strlen(channel->passphrase))) {
2049 chidp = silc_id_payload_encode(channel->id, SILC_ID_CHANNEL);
2050 silc_server_command_send_status_data(cmd, SILC_COMMAND_JOIN,
2051 SILC_STATUS_ERR_BAD_PASSWORD, 0,
2052 2, chidp->data, chidp->len);
2053 silc_buffer_free(chidp);
2058 /* Verify channel authentication with channel public keys if set. */
2059 if (channel->mode & SILC_CHANNEL_MODE_CHANNEL_AUTH) {
2060 if (!silc_server_verify_channel_auth(server, channel, client->id,
2061 cauth, cauth_len)) {
2062 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2063 SILC_STATUS_ERR_PERM_DENIED, 0);
2069 * Client is allowed to join to the channel. Make it happen.
2072 /* Check whether the client already is on the channel */
2073 if (silc_server_client_on_channel(client, channel, NULL)) {
2074 clidp = silc_id_payload_encode(client_id, SILC_ID_CLIENT);
2075 chidp = silc_id_payload_encode(channel->id, SILC_ID_CHANNEL);
2076 silc_server_command_send_status_data2(cmd, SILC_COMMAND_JOIN,
2077 SILC_STATUS_ERR_USER_ON_CHANNEL, 0,
2078 2, clidp->data, clidp->len,
2079 3, chidp->data, chidp->len);
2080 silc_buffer_free(clidp);
2081 silc_buffer_free(chidp);
2085 /* Generate new channel key as protocol dictates */
2087 if (!silc_server_create_channel_key(server, channel, 0))
2090 /* Send the channel key. This is broadcasted to the channel but is not
2091 sent to the client who is joining to the channel. */
2092 if (!(channel->mode & SILC_CHANNEL_MODE_PRIVKEY))
2093 silc_server_send_channel_key(server, NULL, channel,
2094 server->server_type == SILC_ROUTER ?
2095 FALSE : !server->standalone);
2098 /* Join the client to the channel by adding it to channel's user list.
2099 Add also the channel to client entry's channels list for fast cross-
2101 chl = silc_calloc(1, sizeof(*chl));
2103 chl->client = client;
2104 chl->channel = channel;
2105 silc_hash_table_add(channel->user_list, client, chl);
2106 silc_hash_table_add(client->channels, channel, chl);
2107 channel->user_count++;
2108 channel->disabled = FALSE;
2110 /* Get users on the channel */
2111 silc_server_get_users_on_channel(server, channel, &user_list, &mode_list,
2114 /* Encode Client ID Payload of the original client who wants to join */
2115 clidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
2117 /* Encode command reply packet */
2118 chidp = silc_id_payload_encode(channel->id, SILC_ID_CHANNEL);
2119 SILC_PUT32_MSB(channel->mode, mode);
2120 SILC_PUT32_MSB(created, tmp2);
2121 SILC_PUT32_MSB(user_count, tmp3);
2123 if (!(channel->mode & SILC_CHANNEL_MODE_PRIVKEY)) {
2124 tmp = silc_id_id2str(channel->id, SILC_ID_CHANNEL);
2125 cipher = silc_cipher_get_name(channel->channel_key);
2126 keyp = silc_channel_key_payload_encode(silc_id_get_len(channel->id,
2129 strlen(cipher), cipher,
2130 channel->key_len / 8, channel->key);
2134 if (channel->founder_key)
2135 fkey = silc_pkcs_public_key_payload_encode(channel->founder_key);
2137 /* Encode invite list */
2139 if (channel->invite_list && silc_hash_table_count(channel->invite_list)) {
2140 SilcHashTableList htl;
2142 invite_list = silc_buffer_alloc_size(2);
2143 silc_buffer_format(invite_list,
2144 SILC_STR_UI_SHORT(silc_hash_table_count(
2145 channel->invite_list)),
2148 silc_hash_table_list(channel->invite_list, &htl);
2149 while (silc_hash_table_get(&htl, (void *)&tmp_len, (void *)&reply))
2150 invite_list = silc_argument_payload_encode_one(invite_list,
2152 reply->len, tmp_len);
2153 silc_hash_table_list_reset(&htl);
2156 /* Encode ban list */
2158 if (channel->ban_list && silc_hash_table_count(channel->ban_list)) {
2159 SilcHashTableList htl;
2161 ban_list = silc_buffer_alloc_size(2);
2162 silc_buffer_format(ban_list,
2163 SILC_STR_UI_SHORT(silc_hash_table_count(
2164 channel->ban_list)),
2167 silc_hash_table_list(channel->ban_list, &htl);
2168 while (silc_hash_table_get(&htl, (void *)&tmp_len, (void *)&reply))
2169 ban_list = silc_argument_payload_encode_one(ban_list,
2171 reply->len, tmp_len);
2172 silc_hash_table_list_reset(&htl);
2175 if (channel->channel_pubkeys)
2176 chpklist = silc_server_get_channel_pk_list(server, channel, FALSE, FALSE);
2179 silc_command_reply_payload_encode_va(SILC_COMMAND_JOIN,
2180 SILC_STATUS_OK, 0, ident, 15,
2181 2, channel->channel_name,
2182 strlen(channel->channel_name),
2183 3, chidp->data, chidp->len,
2184 4, clidp->data, clidp->len,
2187 7, keyp ? keyp->data : NULL,
2188 keyp ? keyp->len : 0,
2189 8, ban_list ? ban_list->data : NULL,
2190 ban_list ? ban_list->len : 0,
2191 9, invite_list ? invite_list->data :
2193 invite_list ? invite_list->len : 0,
2196 strlen(channel->topic) : 0,
2197 11, silc_hmac_get_name(channel->hmac),
2198 strlen(silc_hmac_get_name(channel->
2201 13, user_list->data, user_list->len,
2202 14, mode_list->data,
2204 15, fkey ? fkey->data : NULL,
2205 fkey ? fkey->len : 0,
2206 16, chpklist ? chpklist->data : NULL,
2207 chpklist ? chpklist->len : 0);
2209 /* Send command reply */
2210 silc_server_packet_send(server, sock, SILC_PACKET_COMMAND_REPLY, 0,
2211 reply->data, reply->len, FALSE);
2213 /* Send JOIN notify to locally connected clients on the channel. If
2214 we are normal server then router will send or have sent JOIN notify
2215 already. However since we've added the client already to our channel
2216 we'll ignore it (in packet_receive.c) so we must send it here. If
2217 we are router then this will send it to local clients and local
2219 SILC_LOG_DEBUG(("Send JOIN notify to channel"));
2220 silc_server_send_notify_to_channel(server, NULL, channel, FALSE, TRUE,
2221 SILC_NOTIFY_TYPE_JOIN, 2,
2222 clidp->data, clidp->len,
2223 chidp->data, chidp->len);
2225 /* Update statistics */
2226 server->stat.my_chanclients++;
2227 if (server->server_type == SILC_ROUTER) {
2228 server->stat.cell_chanclients++;
2229 server->stat.chanclients++;
2232 if (!cmd->pending) {
2233 /* Send JOIN notify packet to our primary router */
2234 silc_server_send_notify_join(server, SILC_PRIMARY_ROUTE(server),
2235 SILC_BROADCAST(server), channel, client->id);
2238 /* Distribute the channel key to all backup routers. */
2239 silc_server_backup_send(server, NULL, SILC_PACKET_CHANNEL_KEY, 0,
2240 keyp->data, keyp->len, FALSE, TRUE);
2242 /* If client became founder by providing correct founder auth data
2243 notify the mode change to the channel. */
2245 SILC_PUT32_MSB(chl->mode, mode);
2246 SILC_LOG_DEBUG(("Send CUMODE_CHANGE notify to channel"));
2247 silc_server_send_notify_to_channel(server, NULL, channel, FALSE, TRUE,
2248 SILC_NOTIFY_TYPE_CUMODE_CHANGE, 4,
2249 clidp->data, clidp->len,
2250 mode, 4, clidp->data, clidp->len,
2251 fkey ? fkey->data : NULL,
2252 fkey ? fkey->len : 0);
2256 /* Set CUMODE notify type to network */
2258 silc_server_send_notify_cumode(server, SILC_PRIMARY_ROUTE(server),
2259 SILC_BROADCAST(server), channel,
2260 chl->mode, client->id, SILC_ID_CLIENT,
2261 client->id, channel->founder_key);
2263 silc_buffer_free(reply);
2264 silc_buffer_free(clidp);
2265 silc_buffer_free(chidp);
2266 silc_buffer_free(keyp);
2267 silc_buffer_free(user_list);
2268 silc_buffer_free(mode_list);
2269 silc_buffer_free(fkey);
2270 silc_buffer_free(chpklist);
2271 silc_buffer_free(invite_list);
2272 silc_buffer_free(ban_list);
2276 memset(passphrase, 0, strlen(passphrase));
2277 silc_free(passphrase);
2280 /* Server side of command JOIN. Joins client into requested channel. If
2281 the channel does not exist it will be created. */
2283 SILC_SERVER_CMD_FUNC(join)
2285 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2286 SilcServer server = cmd->server;
2287 unsigned char *auth, *cauth;
2288 SilcUInt32 tmp_len, auth_len, cauth_len;
2289 char *tmp, *channel_name = NULL, *cipher, *hmac;
2290 SilcChannelEntry channel;
2291 SilcUInt32 umode = 0;
2292 bool created = FALSE, create_key = TRUE;
2293 SilcClientID *client_id;
2295 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_JOIN, cmd, 2, 7);
2297 /* Get channel name */
2298 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
2300 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2301 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
2308 channel_name[255] = '\0';
2310 if (silc_server_name_bad_chchars(channel_name, tmp_len) == TRUE) {
2311 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2312 SILC_STATUS_ERR_BAD_CHANNEL, 0);
2316 /* Get Client ID of the client who is joining to the channel */
2317 tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
2319 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2320 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
2324 client_id = silc_id_payload_parse_id(tmp, tmp_len, NULL);
2326 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2327 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
2332 /* Get cipher, hmac name and auth payload */
2333 cipher = silc_argument_get_arg_type(cmd->args, 4, NULL);
2334 hmac = silc_argument_get_arg_type(cmd->args, 5, NULL);
2335 auth = silc_argument_get_arg_type(cmd->args, 6, &auth_len);
2336 cauth = silc_argument_get_arg_type(cmd->args, 7, &cauth_len);
2338 /* See if the channel exists */
2339 channel = silc_idlist_find_channel_by_name(server->local_list,
2340 channel_name, NULL);
2342 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT) {
2343 SilcClientEntry entry = (SilcClientEntry)cmd->sock->user_data;
2345 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2346 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
2351 silc_free(client_id);
2352 client_id = silc_id_dup(entry->id, SILC_ID_CLIENT);
2355 (channel->disabled && server->server_type != SILC_ROUTER)) {
2356 /* Channel not found or not valid */
2358 /* If we are standalone server we don't have a router, we just create
2359 the channel by ourselves (unless it existed). */
2360 if (server->standalone) {
2362 channel = silc_server_create_new_channel(server, server->id, cipher,
2363 hmac, channel_name, TRUE);
2365 silc_server_command_send_status_data(
2366 cmd, SILC_COMMAND_JOIN,
2367 SILC_STATUS_ERR_UNKNOWN_ALGORITHM,
2368 0, 2, cipher, strlen(cipher));
2369 silc_free(client_id);
2373 umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
2379 /* The channel does not exist on our server. If we are normal server
2380 we will send JOIN command to our router which will handle the
2381 joining procedure (either creates the channel if it doesn't exist
2382 or joins the client to it). */
2383 if (server->server_type != SILC_ROUTER) {
2385 SilcUInt16 old_ident;
2387 /* If this is pending command callback then we've resolved
2388 it and it didn't work, return since we've notified the
2389 client already in the command reply callback. */
2391 silc_free(client_id);
2395 old_ident = silc_command_get_ident(cmd->payload);
2396 silc_command_set_ident(cmd->payload, ++server->cmd_ident);
2397 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
2399 /* Send JOIN command to our router */
2400 silc_server_packet_send(server, (SilcSocketConnection)
2401 SILC_PRIMARY_ROUTE(server),
2402 SILC_PACKET_COMMAND, cmd->packet->flags,
2403 tmpbuf->data, tmpbuf->len, TRUE);
2405 /* Reprocess this packet after received reply from router */
2406 silc_server_command_pending(server, SILC_COMMAND_JOIN,
2407 silc_command_get_ident(cmd->payload),
2408 silc_server_command_join,
2409 silc_server_command_dup(cmd));
2410 cmd->pending = TRUE;
2411 silc_command_set_ident(cmd->payload, old_ident);
2412 silc_buffer_free(tmpbuf);
2413 silc_free(client_id);
2417 /* We are router and the channel does not seem exist so we will check
2418 our global list as well for the channel. */
2419 channel = silc_idlist_find_channel_by_name(server->global_list,
2420 channel_name, NULL);
2422 /* Channel really does not exist, create it */
2423 channel = silc_server_create_new_channel(server, server->id, cipher,
2424 hmac, channel_name, TRUE);
2426 silc_server_command_send_status_data(
2427 cmd, SILC_COMMAND_JOIN,
2428 SILC_STATUS_ERR_UNKNOWN_ALGORITHM, 0,
2429 2, cipher, strlen(cipher));
2430 silc_free(client_id);
2434 umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
2442 /* Channel not found */
2444 /* If the command came from router and we are normal server then
2445 something went wrong with the joining as the channel was not found.
2446 We can't do anything else but ignore this. */
2447 if (cmd->sock->type == SILC_SOCKET_TYPE_ROUTER ||
2448 server->server_type != SILC_ROUTER) {
2449 silc_free(client_id);
2453 /* We are router and the channel does not seem exist so we will check
2454 our global list as well for the channel. */
2455 channel = silc_idlist_find_channel_by_name(server->global_list,
2456 channel_name, NULL);
2458 /* Channel really does not exist, create it */
2459 channel = silc_server_create_new_channel(server, server->id, cipher,
2460 hmac, channel_name, TRUE);
2462 silc_server_command_send_status_data(
2463 cmd, SILC_COMMAND_JOIN,
2464 SILC_STATUS_ERR_UNKNOWN_ALGORITHM, 0,
2465 2, cipher, strlen(cipher));
2466 silc_free(client_id);
2470 umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
2477 /* Check whether the channel was created by our router */
2478 if (cmd->pending && context2) {
2479 SilcServerCommandReplyContext reply = context2;
2481 if (silc_command_get(reply->payload) == SILC_COMMAND_JOIN) {
2482 tmp = silc_argument_get_arg_type(reply->args, 6, NULL);
2483 SILC_GET32_MSB(created, tmp);
2484 if (silc_argument_get_arg_type(reply->args, 7, NULL))
2485 create_key = FALSE; /* Router returned the key already */
2487 if (silc_command_get_status(reply->payload, NULL, NULL) &&
2488 channel->mode & SILC_CHANNEL_MODE_PASSPHRASE) {
2489 /* Save channel passphrase, if user provided it successfully */
2492 pa = silc_argument_get_arg_type(cmd->args, 3, &pa_len);
2494 silc_free(channel->passphrase);
2495 channel->passphrase = silc_memdup(pa, pa_len);
2500 if (silc_command_get(reply->payload) == SILC_COMMAND_WHOIS &&
2501 !channel->disabled && !silc_hash_table_count(channel->user_list))
2505 /* If the channel does not have global users and is also empty the client
2506 will be the channel founder and operator. */
2507 if (!channel->disabled &&
2508 !channel->global_users && !silc_hash_table_count(channel->user_list))
2509 umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
2511 /* Join to the channel */
2512 silc_server_command_join_channel(server, cmd, channel, client_id,
2513 created, create_key, umode,
2514 auth, auth_len, cauth, cauth_len);
2516 silc_free(client_id);
2519 silc_server_command_free(cmd);
2522 /* Server side of command MOTD. Sends server's current "message of the
2523 day" to the client. */
2525 SILC_SERVER_CMD_FUNC(motd)
2527 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2528 SilcServer server = cmd->server;
2529 SilcBuffer packet, idp;
2530 char *motd, *dest_server;
2531 SilcUInt32 motd_len;
2532 SilcUInt16 ident = silc_command_get_ident(cmd->payload);
2534 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_MOTD, cmd, 1, 1);
2536 /* Get server name */
2537 dest_server = silc_argument_get_arg_type(cmd->args, 1, NULL);
2539 silc_server_command_send_status_reply(cmd, SILC_COMMAND_MOTD,
2540 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
2545 if (!strncasecmp(dest_server, server->server_name, strlen(dest_server))) {
2548 idp = silc_id_payload_encode(server->id_entry->id, SILC_ID_SERVER);
2550 if (server->config && server->config->server_info &&
2551 server->config->server_info->motd_file) {
2553 motd = silc_file_readfile(server->config->server_info->motd_file,
2559 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_MOTD,
2562 2, idp->data, idp->len,
2566 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_MOTD,
2569 2, idp->data, idp->len);
2572 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
2573 packet->data, packet->len, FALSE);
2574 silc_buffer_free(packet);
2575 silc_buffer_free(idp);
2577 SilcServerEntry entry;
2579 /* Check whether we have this server cached */
2580 entry = silc_idlist_find_server_by_name(server->global_list,
2581 dest_server, TRUE, NULL);
2583 entry = silc_idlist_find_server_by_name(server->local_list,
2584 dest_server, TRUE, NULL);
2587 if (server->server_type != SILC_SERVER && !cmd->pending &&
2588 entry && !entry->motd) {
2589 /* Send to the server */
2591 SilcUInt16 old_ident;
2593 old_ident = silc_command_get_ident(cmd->payload);
2594 silc_command_set_ident(cmd->payload, ++server->cmd_ident);
2595 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
2597 silc_server_packet_send(server, entry->connection,
2598 SILC_PACKET_COMMAND, cmd->packet->flags,
2599 tmpbuf->data, tmpbuf->len, TRUE);
2601 /* Reprocess this packet after received reply from router */
2602 silc_server_command_pending(server, SILC_COMMAND_MOTD,
2603 silc_command_get_ident(cmd->payload),
2604 silc_server_command_motd,
2605 silc_server_command_dup(cmd));
2606 cmd->pending = TRUE;
2607 silc_command_set_ident(cmd->payload, old_ident);
2608 silc_buffer_free(tmpbuf);
2612 /* Send to primary router only if we don't know the server
2613 * the client requested or if the server is not locally connected */
2614 if ((!entry || !(entry->data.status & SILC_IDLIST_STATUS_LOCAL))
2615 && !cmd->pending && !server->standalone) {
2616 /* Send to the primary router */
2618 SilcUInt16 old_ident;
2620 old_ident = silc_command_get_ident(cmd->payload);
2621 silc_command_set_ident(cmd->payload, ++server->cmd_ident);
2622 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
2624 silc_server_packet_send(server, SILC_PRIMARY_ROUTE(server),
2625 SILC_PACKET_COMMAND, cmd->packet->flags,
2626 tmpbuf->data, tmpbuf->len, TRUE);
2628 /* Reprocess this packet after received reply from router */
2629 silc_server_command_pending(server, SILC_COMMAND_MOTD,
2630 silc_command_get_ident(cmd->payload),
2631 silc_server_command_motd,
2632 silc_server_command_dup(cmd));
2633 cmd->pending = TRUE;
2634 silc_command_set_ident(cmd->payload, old_ident);
2635 silc_buffer_free(tmpbuf);
2640 silc_server_command_send_status_data(cmd, SILC_COMMAND_MOTD,
2641 SILC_STATUS_ERR_NO_SUCH_SERVER, 0,
2643 strlen(dest_server));
2647 idp = silc_id_payload_encode(entry->id, SILC_ID_SERVER);
2648 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_MOTD,
2649 SILC_STATUS_OK, 0, ident, 2,
2650 2, idp->data, idp->len,
2653 strlen(entry->motd) : 0);
2654 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
2655 packet->data, packet->len, FALSE);
2656 silc_buffer_free(packet);
2657 silc_buffer_free(idp);
2661 silc_server_command_free(cmd);
2664 /* Server side of command UMODE. Client can use this command to set/unset
2665 user mode. Client actually cannot set itself to be as server/router
2666 operator so this can be used only to unset the modes. */
2668 SILC_SERVER_CMD_FUNC(umode)
2670 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2671 SilcServer server = cmd->server;
2672 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
2674 unsigned char *tmp_mask, m[4];
2675 SilcUInt32 mask = 0;
2676 SilcUInt16 ident = silc_command_get_ident(cmd->payload);
2677 bool set_mask = FALSE;
2679 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT || !client)
2682 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_UMODE, cmd, 1, 2);
2684 /* Get the client's mode mask */
2685 tmp_mask = silc_argument_get_arg_type(cmd->args, 2, NULL);
2687 SILC_GET32_MSB(mask, tmp_mask);
2692 /* Check that mode changing is allowed. */
2693 if (!silc_server_check_umode_rights(server, client, mask)) {
2694 silc_server_command_send_status_reply(cmd, SILC_COMMAND_UMODE,
2695 SILC_STATUS_ERR_PERM_DENIED, 0);
2699 /* Anonymous mode cannot be set by client */
2700 if (mask & SILC_UMODE_ANONYMOUS &&
2701 !(client->mode & SILC_UMODE_ANONYMOUS)) {
2702 silc_server_command_send_status_reply(cmd, SILC_COMMAND_UMODE,
2703 SILC_STATUS_ERR_PERM_DENIED, 0);
2707 /* Update statistics */
2708 if (mask & SILC_UMODE_GONE) {
2709 if (!(client->mode & SILC_UMODE_GONE))
2710 server->stat.my_aways++;
2712 if (client->mode & SILC_UMODE_GONE)
2713 server->stat.my_aways--;
2716 /* If the client has anonymous mode set, preserve it. */
2717 if (client->mode & SILC_UMODE_ANONYMOUS)
2718 mask |= SILC_UMODE_ANONYMOUS;
2720 /* Change the mode */
2721 client->mode = mask;
2723 /* Send UMODE change to primary router */
2724 silc_server_send_notify_umode(server, SILC_PRIMARY_ROUTE(server),
2725 SILC_BROADCAST(server), client->id,
2728 /* Check if anyone is watching this nickname */
2729 if (server->server_type == SILC_ROUTER)
2730 silc_server_check_watcher_list(server, client, NULL,
2731 SILC_NOTIFY_TYPE_UMODE_CHANGE);
2734 /* Send command reply to sender */
2735 SILC_PUT32_MSB(client->mode, m);
2736 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_UMODE,
2737 SILC_STATUS_OK, 0, ident, 1,
2739 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
2740 packet->data, packet->len, FALSE);
2741 silc_buffer_free(packet);
2744 silc_server_command_free(cmd);
2747 /* Server side command of CMODE. Changes channel mode */
2749 SILC_SERVER_CMD_FUNC(cmode)
2751 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2752 SilcServer server = cmd->server;
2753 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
2754 SilcIDListData idata = (SilcIDListData)client;
2755 SilcChannelID *channel_id = NULL;
2756 SilcChannelEntry channel;
2757 SilcChannelClientEntry chl;
2758 SilcBuffer packet, cidp;
2759 unsigned char *tmp, *tmp_id, *tmp_mask, *chpkdata = NULL;
2760 char *cipher = NULL, *hmac = NULL, *passphrase = NULL;
2761 SilcUInt32 mode_mask = 0, old_mask = 0, tmp_len, tmp_len2, chpklen;
2762 SilcUInt16 ident = silc_command_get_ident(cmd->payload);
2763 bool set_mask = FALSE, set_chpk = FALSE;
2764 SilcPublicKey founder_key = NULL;
2765 SilcBuffer fkey = NULL, chpklist = NULL;
2766 SilcBufferStruct chpk;
2769 silc_server_command_free(cmd);
2773 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_CMODE, cmd, 1, 9);
2775 /* Get Channel ID */
2776 tmp_id = silc_argument_get_arg_type(cmd->args, 1, &tmp_len2);
2778 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2779 SILC_STATUS_ERR_NO_CHANNEL_ID, 0);
2780 silc_server_command_free(cmd);
2783 channel_id = silc_id_payload_parse_id(tmp_id, tmp_len2, NULL);
2785 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2786 SILC_STATUS_ERR_NO_CHANNEL_ID, 0);
2787 silc_server_command_free(cmd);
2791 /* Get channel entry */
2792 channel = silc_idlist_find_channel_by_id(server->local_list,
2795 channel = silc_idlist_find_channel_by_id(server->global_list,
2798 silc_server_command_send_status_data(cmd, SILC_COMMAND_CMODE,
2799 SILC_STATUS_ERR_NO_SUCH_CHANNEL_ID,
2800 0, 2, tmp_id, tmp_len2);
2801 silc_free(channel_id);
2802 silc_server_command_free(cmd);
2806 old_mask = channel->mode;
2808 /* Get the channel mode mask */
2809 tmp_mask = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
2811 SILC_GET32_MSB(mode_mask, tmp_mask);
2815 /* Check whether this client is on the channel */
2816 if (!silc_server_client_on_channel(client, channel, &chl)) {
2817 silc_server_command_send_status_data(cmd, SILC_COMMAND_CMODE,
2818 SILC_STATUS_ERR_NOT_ON_CHANNEL, 0,
2819 2, tmp_id, tmp_len2);
2823 /* Check that client has rights to change any requested channel modes */
2824 if (set_mask && !silc_server_check_cmode_rights(server, channel, chl,
2826 SILC_LOG_DEBUG(("Client does not have rights to change mode"));
2827 silc_server_command_send_status_data(
2828 cmd, SILC_COMMAND_CMODE,
2829 (!(chl->mode & SILC_CHANNEL_UMODE_CHANOP) ?
2830 SILC_STATUS_ERR_NO_CHANNEL_PRIV :
2831 SILC_STATUS_ERR_NO_CHANNEL_FOPRIV), 0,
2832 2, tmp_id, tmp_len2);
2836 /* If mode mask was not sent as argument then merely return the current
2837 mode mask, founder key and channel public key list to the sender. */
2840 SILC_PUT32_MSB(channel->mode, m);
2841 if (channel->founder_key)
2842 fkey = silc_pkcs_public_key_payload_encode(channel->founder_key);
2843 if (channel->channel_pubkeys)
2844 chpklist = silc_server_get_channel_pk_list(server, channel,
2847 silc_command_reply_payload_encode_va(SILC_COMMAND_CMODE,
2848 SILC_STATUS_OK, 0, ident, 4,
2849 2, tmp_id, tmp_len2,
2851 4, fkey ? fkey->data : NULL,
2852 fkey ? fkey->len : 0,
2853 5, chpklist ? chpklist->data : NULL,
2854 chpklist ? chpklist->len : 0);
2855 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
2856 packet->data, packet->len, FALSE);
2857 silc_buffer_free(packet);
2862 * Check the modes. Modes that requires nothing special operation are
2866 if (mode_mask & SILC_CHANNEL_MODE_PRIVKEY) {
2867 /* Channel uses private keys to protect traffic. Client(s) has set the
2868 key locally they want to use, server does not know that key. */
2869 /* Nothing interesting to do here */
2871 if (channel->mode & SILC_CHANNEL_MODE_PRIVKEY) {
2872 /* The mode is removed and we need to generate and distribute
2873 new channel key. Clients are not using private channel keys
2874 anymore after this. */
2876 /* Re-generate channel key */
2877 if (!silc_server_create_channel_key(server, channel, 0))
2880 /* Send the channel key. This sends it to our local clients and if
2881 we are normal server to our router as well. */
2882 silc_server_send_channel_key(server, NULL, channel,
2883 server->server_type == SILC_ROUTER ?
2884 FALSE : !server->standalone);
2886 cipher = (char *)silc_cipher_get_name(channel->channel_key);
2887 hmac = (char *)silc_hmac_get_name(channel->hmac);
2891 if (mode_mask & SILC_CHANNEL_MODE_ULIMIT) {
2892 /* User limit is set on channel */
2893 SilcUInt32 user_limit;
2895 /* Get user limit */
2896 tmp = silc_argument_get_arg_type(cmd->args, 3, NULL);
2898 if (!(channel->mode & SILC_CHANNEL_MODE_ULIMIT)) {
2899 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2900 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS, 0);
2904 SILC_GET32_MSB(user_limit, tmp);
2905 channel->user_limit = user_limit;
2908 if (channel->mode & SILC_CHANNEL_MODE_ULIMIT)
2909 /* User limit mode is unset. Remove user limit */
2910 channel->user_limit = 0;
2913 if (mode_mask & SILC_CHANNEL_MODE_PASSPHRASE) {
2914 if (!(channel->mode & SILC_CHANNEL_MODE_PASSPHRASE)) {
2915 /* Passphrase has been set to channel */
2917 /* Get the passphrase */
2918 tmp = silc_argument_get_arg_type(cmd->args, 4, NULL);
2920 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2921 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS, 0);
2925 /* Save the passphrase */
2926 passphrase = channel->passphrase = silc_memdup(tmp, strlen(tmp));
2929 if (channel->mode & SILC_CHANNEL_MODE_PASSPHRASE) {
2930 /* Passphrase mode is unset. remove the passphrase */
2931 silc_free(channel->passphrase);
2932 channel->passphrase = NULL;
2936 if (mode_mask & SILC_CHANNEL_MODE_CIPHER) {
2937 if (!(channel->mode & SILC_CHANNEL_MODE_CIPHER)) {
2938 /* Cipher to use protect the traffic */
2939 SilcCipher newkey, oldkey;
2942 cipher = silc_argument_get_arg_type(cmd->args, 5, NULL);
2944 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
2945 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS, 0);
2949 /* Delete old cipher and allocate the new one */
2950 if (!silc_cipher_alloc(cipher, &newkey)) {
2951 silc_server_command_send_status_data(
2952 cmd, SILC_COMMAND_CMODE,
2953 SILC_STATUS_ERR_UNKNOWN_ALGORITHM, 0,
2954 2, cipher, strlen(cipher));
2958 oldkey = channel->channel_key;
2959 channel->channel_key = newkey;
2961 /* Re-generate channel key */
2962 if (!silc_server_create_channel_key(server, channel, 0)) {
2963 /* We don't have new key, revert to old one */
2964 channel->channel_key = oldkey;
2968 /* Remove old channel key for good */
2969 silc_cipher_free(oldkey);
2971 /* Send the channel key. This sends it to our local clients and if
2972 we are normal server to our router as well. */
2973 silc_server_send_channel_key(server, NULL, channel,
2974 server->server_type == SILC_ROUTER ?
2975 FALSE : !server->standalone);
2978 if (channel->mode & SILC_CHANNEL_MODE_CIPHER) {
2979 /* Cipher mode is unset. Remove the cipher and revert back to
2981 SilcCipher newkey, oldkey;
2982 cipher = channel->cipher;
2984 /* Delete old cipher and allocate default one */
2985 if (!silc_cipher_alloc(cipher ? cipher : SILC_DEFAULT_CIPHER, &newkey)) {
2986 silc_server_command_send_status_data(
2987 cmd, SILC_COMMAND_CMODE,
2988 SILC_STATUS_ERR_UNKNOWN_ALGORITHM, 0,
2989 2, cipher, strlen(cipher));
2993 oldkey = channel->channel_key;
2994 channel->channel_key = newkey;
2996 /* Re-generate channel key */
2997 if (!silc_server_create_channel_key(server, channel, 0)) {
2998 /* We don't have new key, revert to old one */
2999 channel->channel_key = oldkey;
3003 /* Remove old channel key for good */
3004 silc_cipher_free(oldkey);
3006 /* Send the channel key. This sends it to our local clients and if
3007 we are normal server to our router as well. */
3008 silc_server_send_channel_key(server, NULL, channel,
3009 server->server_type == SILC_ROUTER ?
3010 FALSE : !server->standalone);
3014 if (mode_mask & SILC_CHANNEL_MODE_HMAC) {
3015 if (!(channel->mode & SILC_CHANNEL_MODE_HMAC)) {
3016 /* HMAC to use protect the traffic */
3017 unsigned char hash[32];
3021 hmac = silc_argument_get_arg_type(cmd->args, 6, NULL);
3023 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3024 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS, 0);
3028 /* Delete old hmac and allocate the new one */
3029 if (!silc_hmac_alloc(hmac, NULL, &newhmac)) {
3030 silc_server_command_send_status_data(
3031 cmd, SILC_COMMAND_CMODE,
3032 SILC_STATUS_ERR_UNKNOWN_ALGORITHM, 0,
3033 2, hmac, strlen(hmac));
3037 silc_hmac_free(channel->hmac);
3038 channel->hmac = newhmac;
3040 /* Set the HMAC key out of current channel key. The client must do
3042 silc_hash_make(silc_hmac_get_hash(channel->hmac), channel->key,
3043 channel->key_len / 8, hash);
3044 silc_hmac_set_key(channel->hmac, hash,
3045 silc_hash_len(silc_hmac_get_hash(channel->hmac)));
3046 memset(hash, 0, sizeof(hash));
3049 if (channel->mode & SILC_CHANNEL_MODE_HMAC) {
3050 /* Hmac mode is unset. Remove the hmac and revert back to
3053 unsigned char hash[32];
3054 hmac = channel->hmac_name;
3056 /* Delete old hmac and allocate default one */
3057 if (!silc_hmac_alloc(hmac ? hmac : SILC_DEFAULT_HMAC, NULL, &newhmac)) {
3058 silc_server_command_send_status_data(
3059 cmd, SILC_COMMAND_CMODE,
3060 SILC_STATUS_ERR_UNKNOWN_ALGORITHM, 0,
3061 2, hmac, strlen(hmac));
3065 silc_hmac_free(channel->hmac);
3066 channel->hmac = newhmac;
3068 /* Set the HMAC key out of current channel key. The client must do
3070 silc_hash_make(silc_hmac_get_hash(channel->hmac), channel->key,
3071 channel->key_len / 8,
3073 silc_hmac_set_key(channel->hmac, hash,
3074 silc_hash_len(silc_hmac_get_hash(channel->hmac)));
3075 memset(hash, 0, sizeof(hash));
3079 if (mode_mask & SILC_CHANNEL_MODE_FOUNDER_AUTH) {
3080 if (chl->mode & SILC_CHANNEL_UMODE_CHANFO) {
3081 /* Check if the founder public key was received */
3082 founder_key = idata->public_key;
3083 tmp = silc_argument_get_arg_type(cmd->args, 8, &tmp_len);
3085 if (!silc_pkcs_public_key_payload_decode(tmp, tmp_len, &founder_key)) {
3086 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3087 SILC_STATUS_ERR_AUTH_FAILED,
3092 /* If key was not sent and the channel mode has already founder
3093 then the key was not to be changed. */
3094 if (channel->mode & SILC_CHANNEL_MODE_FOUNDER_AUTH)
3098 /* Set the founder authentication */
3099 tmp = silc_argument_get_arg_type(cmd->args, 7, &tmp_len);
3101 silc_server_command_send_status_reply(
3102 cmd, SILC_COMMAND_CMODE,
3103 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS, 0);
3107 /* Verify the payload before setting the mode */
3108 if (!silc_auth_verify_data(tmp, tmp_len, SILC_AUTH_PUBLIC_KEY,
3109 founder_key, 0, server->sha1hash,
3110 client->id, SILC_ID_CLIENT)) {
3111 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3112 SILC_STATUS_ERR_AUTH_FAILED,
3117 /* Save the public key */
3118 if (channel->founder_key)
3119 silc_pkcs_public_key_free(channel->founder_key);
3120 if (silc_argument_get_arg_type(cmd->args, 8, NULL))
3121 channel->founder_key = founder_key;
3123 channel->founder_key = silc_pkcs_public_key_copy(founder_key);
3124 if (!channel->founder_key) {
3125 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3126 SILC_STATUS_ERR_AUTH_FAILED,
3131 fkey = silc_pkcs_public_key_payload_encode(channel->founder_key);
3133 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3134 SILC_STATUS_ERR_AUTH_FAILED,
3136 silc_pkcs_public_key_free(channel->founder_key);
3137 channel->founder_key = NULL;
3142 if (chl->mode & SILC_CHANNEL_UMODE_CHANFO) {
3143 if (channel->mode & SILC_CHANNEL_MODE_FOUNDER_AUTH) {
3144 if (channel->founder_key)
3145 silc_pkcs_public_key_free(channel->founder_key);
3146 channel->founder_key = NULL;
3152 if (mode_mask & SILC_CHANNEL_MODE_CHANNEL_AUTH) {
3153 if (chl->mode & SILC_CHANNEL_UMODE_CHANFO) {
3156 chpkdata = silc_argument_get_arg_type(cmd->args, 9, &chpklen);
3158 if (!chpkdata && channel->mode & SILC_CHANNEL_MODE_CHANNEL_AUTH)
3163 /* Process the channel public key(s) */
3164 st = silc_server_set_channel_pk_list(server, NULL, channel,
3166 if (st != SILC_STATUS_OK) {
3167 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE, st, 0);
3172 if (chl->mode & SILC_CHANNEL_UMODE_CHANFO) {
3173 if (channel->mode & SILC_CHANNEL_MODE_CHANNEL_AUTH) {
3174 if (channel->channel_pubkeys)
3175 silc_hash_table_free(channel->channel_pubkeys);
3176 channel->channel_pubkeys = NULL;
3183 /* Finally, set the mode */
3184 old_mask = channel->mode = mode_mask;
3186 /* Send CMODE_CHANGE notify. */
3187 cidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
3188 silc_server_send_notify_to_channel(server, NULL, channel, FALSE, TRUE,
3189 SILC_NOTIFY_TYPE_CMODE_CHANGE, 7,
3190 cidp->data, cidp->len,
3192 cipher, cipher ? strlen(cipher) : 0,
3193 hmac, hmac ? strlen(hmac) : 0,
3194 passphrase, passphrase ?
3195 strlen(passphrase) : 0,
3196 fkey ? fkey->data : NULL,
3197 fkey ? fkey->len : 0,
3198 chpkdata ? chpkdata : NULL,
3199 chpkdata ? chpklen : 0);
3201 /* Set CMODE notify type to network */
3202 if (chpkdata && chpklen)
3203 silc_buffer_set(&chpk, chpkdata, chpklen);
3204 silc_server_send_notify_cmode(server, SILC_PRIMARY_ROUTE(server),
3205 SILC_BROADCAST(server), channel,
3206 mode_mask, client->id, SILC_ID_CLIENT,
3207 cipher, hmac, passphrase, founder_key,
3208 chpkdata ? &chpk : NULL);
3211 chpklist = silc_server_get_channel_pk_list(server, channel, FALSE, FALSE);
3213 /* Send command reply to sender */
3214 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_CMODE,
3215 SILC_STATUS_OK, 0, ident, 4,
3216 2, tmp_id, tmp_len2,
3218 4, fkey ? fkey->data : NULL,
3219 fkey ? fkey->len : 0,
3220 5, chpklist ? chpklist->data :
3221 NULL, chpklist ? chpklist->len
3223 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
3224 packet->data, packet->len, FALSE);
3226 silc_buffer_free(packet);
3227 silc_buffer_free(cidp);
3230 channel->mode = old_mask;
3231 silc_buffer_free(chpklist);
3232 silc_buffer_free(fkey);
3233 silc_free(channel_id);
3234 silc_server_command_free(cmd);
3237 /* Server side of CUMODE command. Changes client's mode on a channel. */
3239 SILC_SERVER_CMD_FUNC(cumode)
3241 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
3242 SilcServer server = cmd->server;
3243 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
3244 SilcChannelID *channel_id = NULL;
3245 SilcClientID *client_id = NULL;
3246 SilcChannelEntry channel;
3247 SilcClientEntry target_client;
3248 SilcChannelClientEntry chl;
3249 SilcBuffer packet, idp;
3250 unsigned char *tmp_id, *tmp_ch_id, *tmp_mask;
3251 SilcUInt32 target_mask, sender_mask = 0, tmp_len, tmp_ch_len;
3253 SilcUInt16 ident = silc_command_get_ident(cmd->payload);
3254 SilcPublicKey founder_key = NULL;
3255 SilcBuffer fkey = NULL;
3260 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_CUMODE, cmd, 3, 4);
3262 /* Get Channel ID */
3263 tmp_ch_id = silc_argument_get_arg_type(cmd->args, 1, &tmp_ch_len);
3265 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3266 SILC_STATUS_ERR_NO_CHANNEL_ID, 0);
3269 channel_id = silc_id_payload_parse_id(tmp_ch_id, tmp_ch_len, NULL);
3271 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3272 SILC_STATUS_ERR_NO_CHANNEL_ID, 0);
3276 /* Get channel entry */
3277 channel = silc_idlist_find_channel_by_id(server->local_list,
3280 channel = silc_idlist_find_channel_by_id(server->global_list,
3283 silc_server_command_send_status_data(cmd, SILC_COMMAND_CUMODE,
3284 SILC_STATUS_ERR_NO_SUCH_CHANNEL_ID,
3285 0, 2, tmp_ch_id, tmp_ch_len);
3290 /* Check whether sender is on the channel */
3291 if (!silc_server_client_on_channel(client, channel, &chl)) {
3292 silc_server_command_send_status_data(cmd, SILC_COMMAND_CUMODE,
3293 SILC_STATUS_ERR_NOT_ON_CHANNEL, 0,
3294 2, tmp_ch_id, tmp_ch_len);
3297 sender_mask = chl->mode;
3299 /* Get the target client's channel mode mask */
3300 tmp_mask = silc_argument_get_arg_type(cmd->args, 2, NULL);
3302 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3303 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
3307 SILC_GET32_MSB(target_mask, tmp_mask);
3309 /* Get target Client ID */
3310 tmp_id = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
3312 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3313 SILC_STATUS_ERR_NO_CLIENT_ID, 0);
3316 client_id = silc_id_payload_parse_id(tmp_id, tmp_len, NULL);
3318 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3319 SILC_STATUS_ERR_NO_CLIENT_ID, 0);
3323 /* Get target client's entry */
3324 target_client = silc_idlist_find_client_by_id(server->local_list,
3325 client_id, TRUE, NULL);
3327 target_client = silc_idlist_find_client_by_id(server->global_list,
3328 client_id, TRUE, NULL);
3330 if (target_client != client &&
3331 !(sender_mask & SILC_CHANNEL_UMODE_CHANFO) &&
3332 !(sender_mask & SILC_CHANNEL_UMODE_CHANOP)) {
3333 silc_server_command_send_status_data(cmd, SILC_COMMAND_CUMODE,
3334 SILC_STATUS_ERR_NOT_YOU, 0,
3335 2, tmp_ch_id, tmp_ch_len);
3339 /* Check whether target client is on the channel */
3340 if (target_client != client) {
3341 if (!silc_server_client_on_channel(target_client, channel, &chl)) {
3342 silc_server_command_send_status_data2(
3343 cmd, SILC_COMMAND_CUMODE,
3344 SILC_STATUS_ERR_USER_NOT_ON_CHANNEL, 0,
3346 3, tmp_ch_id, tmp_ch_len);
3355 /* If the target client is founder, no one else can change their mode
3357 if (chl->mode & SILC_CHANNEL_UMODE_CHANFO && client != target_client) {
3358 silc_server_command_send_status_data(cmd, SILC_COMMAND_CUMODE,
3359 SILC_STATUS_ERR_NO_CHANNEL_FOPRIV,
3360 0, 2, tmp_ch_id, tmp_ch_len);
3364 if (target_mask & SILC_CHANNEL_UMODE_CHANFO) {
3365 if (target_client != client) {
3366 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3367 SILC_STATUS_ERR_NO_CHANNEL_FOPRIV,
3372 if (!(chl->mode & SILC_CHANNEL_UMODE_CHANFO)) {
3373 /* The client tries to claim the founder rights. */
3374 unsigned char *tmp_auth;
3375 SilcUInt32 tmp_auth_len;
3376 SilcChannelClientEntry chl2;
3377 SilcHashTableList htl;
3379 if (!(channel->mode & SILC_CHANNEL_MODE_FOUNDER_AUTH) ||
3380 !channel->founder_key) {
3381 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3382 SILC_STATUS_ERR_AUTH_FAILED, 0);
3386 tmp_auth = silc_argument_get_arg_type(cmd->args, 4, &tmp_auth_len);
3388 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3389 SILC_STATUS_ERR_AUTH_FAILED, 0);
3393 /* Verify the authentication payload */
3394 if (!silc_auth_verify_data(tmp_auth, tmp_auth_len, SILC_AUTH_PUBLIC_KEY,
3395 channel->founder_key, 0, server->sha1hash,
3396 client->id, SILC_ID_CLIENT)) {
3397 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3398 SILC_STATUS_ERR_AUTH_FAILED, 0);
3403 founder_key = channel->founder_key;
3404 fkey = silc_pkcs_public_key_payload_encode(founder_key);
3406 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3407 SILC_STATUS_ERR_AUTH_FAILED, 0);
3411 /* There cannot be anyone else as founder on the channel now. This
3412 client is definitely the founder due to this authentication. This
3413 is done only on router, not on server, since server cannot know
3414 whether router will accept this mode change or not. XXX This
3415 probably shouldn't be done anymore at all, may cause problems in
3416 router-router connections too (maybe just AUTH_FAILED error should
3417 be returned). -Pekka */
3418 if (server->server_type == SILC_ROUTER) {
3419 silc_hash_table_list(channel->user_list, &htl);
3420 while (silc_hash_table_get(&htl, NULL, (void *)&chl2))
3421 if (chl2->mode & SILC_CHANNEL_UMODE_CHANFO) {
3422 chl2->mode &= ~SILC_CHANNEL_UMODE_CHANFO;
3423 silc_server_force_cumode_change(server, NULL, channel, chl2,
3427 silc_hash_table_list_reset(&htl);
3430 sender_mask = chl->mode |= SILC_CHANNEL_UMODE_CHANFO;
3433 if (chl->mode & SILC_CHANNEL_UMODE_CHANFO) {
3434 if (target_client == client) {
3435 /* Remove channel founder rights from itself */
3436 chl->mode &= ~SILC_CHANNEL_UMODE_CHANFO;
3439 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3440 SILC_STATUS_ERR_NOT_YOU, 0);
3446 if (target_mask & SILC_CHANNEL_UMODE_CHANOP) {
3447 /* Promote to operator */
3448 if (!(chl->mode & SILC_CHANNEL_UMODE_CHANOP)) {
3449 if (!(sender_mask & SILC_CHANNEL_UMODE_CHANOP) &&
3450 !(sender_mask & SILC_CHANNEL_UMODE_CHANFO)) {
3451 silc_server_command_send_status_data(cmd, SILC_COMMAND_CUMODE,
3452 SILC_STATUS_ERR_NO_CHANNEL_PRIV,
3453 0, 2, tmp_ch_id, tmp_ch_len);
3457 chl->mode |= SILC_CHANNEL_UMODE_CHANOP;
3461 if (chl->mode & SILC_CHANNEL_UMODE_CHANOP) {
3462 if (!(sender_mask & SILC_CHANNEL_UMODE_CHANOP) &&
3463 !(sender_mask & SILC_CHANNEL_UMODE_CHANFO)) {
3464 silc_server_command_send_status_data(cmd, SILC_COMMAND_CUMODE,
3465 SILC_STATUS_ERR_NO_CHANNEL_PRIV,
3466 0, 2, tmp_ch_id, tmp_ch_len);
3470 /* Demote to normal user */
3471 chl->mode &= ~SILC_CHANNEL_UMODE_CHANOP;
3476 if (target_mask & SILC_CHANNEL_UMODE_BLOCK_MESSAGES) {
3477 if (target_client != client) {
3478 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3479 SILC_STATUS_ERR_NOT_YOU, 0);
3483 if (!(chl->mode & SILC_CHANNEL_UMODE_BLOCK_MESSAGES)) {
3484 chl->mode |= SILC_CHANNEL_UMODE_BLOCK_MESSAGES;
3488 if (chl->mode & SILC_CHANNEL_UMODE_BLOCK_MESSAGES) {
3489 if (target_client != client) {
3490 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3491 SILC_STATUS_ERR_NOT_YOU, 0);
3495 chl->mode &= ~SILC_CHANNEL_UMODE_BLOCK_MESSAGES;
3500 if (target_mask & SILC_CHANNEL_UMODE_BLOCK_MESSAGES_USERS) {
3501 if (target_client != client) {
3502 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3503 SILC_STATUS_ERR_NOT_YOU, 0);
3507 if (!(chl->mode & SILC_CHANNEL_UMODE_BLOCK_MESSAGES_USERS)) {
3508 chl->mode |= SILC_CHANNEL_UMODE_BLOCK_MESSAGES_USERS;
3512 if (chl->mode & SILC_CHANNEL_UMODE_BLOCK_MESSAGES_USERS) {
3513 if (target_client != client) {
3514 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3515 SILC_STATUS_ERR_NOT_YOU, 0);
3519 chl->mode &= ~SILC_CHANNEL_UMODE_BLOCK_MESSAGES_USERS;
3524 if (target_mask & SILC_CHANNEL_UMODE_BLOCK_MESSAGES_ROBOTS) {
3525 if (target_client != client) {
3526 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3527 SILC_STATUS_ERR_NOT_YOU, 0);
3531 if (!(chl->mode & SILC_CHANNEL_UMODE_BLOCK_MESSAGES_ROBOTS)) {
3532 chl->mode |= SILC_CHANNEL_UMODE_BLOCK_MESSAGES_ROBOTS;
3536 if (chl->mode & SILC_CHANNEL_UMODE_BLOCK_MESSAGES_ROBOTS) {
3537 if (target_client != client) {
3538 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3539 SILC_STATUS_ERR_NOT_YOU, 0);
3543 chl->mode &= ~SILC_CHANNEL_UMODE_BLOCK_MESSAGES_ROBOTS;
3548 if (target_mask & SILC_CHANNEL_UMODE_QUIET) {
3549 if (!(chl->mode & SILC_CHANNEL_UMODE_QUIET)) {
3550 if (client == target_client) {
3551 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3552 SILC_STATUS_ERR_PERM_DENIED, 0);
3555 chl->mode |= SILC_CHANNEL_UMODE_QUIET;
3559 if (chl->mode & SILC_CHANNEL_UMODE_QUIET) {
3560 if (client == target_client) {
3561 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3562 SILC_STATUS_ERR_PERM_DENIED, 0);
3565 chl->mode &= ~SILC_CHANNEL_UMODE_QUIET;
3570 idp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
3571 tmp_id = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
3573 /* Send notify to channel, notify only if mode was actually changed. */
3575 silc_server_send_notify_to_channel(server, NULL, channel, FALSE, TRUE,
3576 SILC_NOTIFY_TYPE_CUMODE_CHANGE, 4,
3577 idp->data, idp->len,
3580 fkey ? fkey->data : NULL,
3581 fkey ? fkey->len : 0);
3583 /* Set CUMODE notify type to network */
3584 silc_server_send_notify_cumode(server, SILC_PRIMARY_ROUTE(server),
3585 SILC_BROADCAST(server), channel,
3586 target_mask, client->id, SILC_ID_CLIENT,
3587 target_client->id, founder_key);
3590 /* Send command reply to sender */
3591 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_CUMODE,
3592 SILC_STATUS_OK, 0, ident, 3,
3594 3, tmp_ch_id, tmp_ch_len,
3595 4, tmp_id, tmp_len);
3596 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
3597 packet->data, packet->len, FALSE);
3599 silc_buffer_free(packet);
3600 silc_buffer_free(idp);
3603 silc_free(channel_id);
3604 silc_free(client_id);
3605 silc_buffer_free(fkey);
3606 silc_server_command_free(cmd);
3609 /* Server side of KICK command. Kicks client out of channel. */
3611 SILC_SERVER_CMD_FUNC(kick)
3613 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
3614 SilcServer server = cmd->server;
3615 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
3616 SilcClientEntry target_client;
3617 SilcChannelID *channel_id;
3618 SilcClientID *client_id;
3619 SilcChannelEntry channel;
3620 SilcChannelClientEntry chl;
3621 SilcBuffer idp, packet;
3622 SilcUInt32 tmp_len, target_idp_len, clen;
3623 SilcUInt16 ident = silc_command_get_ident(cmd->payload);
3624 unsigned char *tmp, *comment, *target_idp;
3629 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_LEAVE, cmd, 1, 3);
3631 /* Get Channel ID */
3632 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
3634 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
3635 SILC_STATUS_ERR_NO_CHANNEL_ID, 0);
3638 channel_id = silc_id_payload_parse_id(tmp, tmp_len, NULL);
3640 silc_server_command_send_status_data(cmd, SILC_COMMAND_KICK,
3641 SILC_STATUS_ERR_BAD_CHANNEL_ID, 0,
3646 /* Get channel entry */
3647 channel = silc_idlist_find_channel_by_id(server->local_list,
3650 channel = silc_idlist_find_channel_by_id(server->local_list,
3653 silc_server_command_send_status_data(cmd, SILC_COMMAND_KICK,
3654 SILC_STATUS_ERR_NO_SUCH_CHANNEL_ID,
3655 0, 2, tmp, tmp_len);
3660 /* Check whether sender is on the channel */
3661 if (!silc_server_client_on_channel(client, channel, &chl)) {
3662 silc_server_command_send_status_data(cmd, SILC_COMMAND_KICK,
3663 SILC_STATUS_ERR_NOT_ON_CHANNEL,
3664 0, 2, tmp, tmp_len);
3668 /* Check that the kicker is channel operator or channel founder */
3669 if (!(chl->mode & SILC_CHANNEL_UMODE_CHANOP) &&
3670 !(chl->mode & SILC_CHANNEL_UMODE_CHANFO)) {
3671 silc_server_command_send_status_data(cmd, SILC_COMMAND_KICK,
3672 SILC_STATUS_ERR_NO_CHANNEL_PRIV,
3673 0, 2, tmp, tmp_len);
3677 /* Get target Client ID */
3678 target_idp = silc_argument_get_arg_type(cmd->args, 2, &target_idp_len);
3680 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
3681 SILC_STATUS_ERR_NO_CLIENT_ID, 0);
3684 client_id = silc_id_payload_parse_id(target_idp, target_idp_len, NULL);
3686 silc_server_command_send_status_data(cmd, SILC_COMMAND_KICK,
3687 SILC_STATUS_ERR_BAD_CLIENT_ID,
3688 0, 2, target_idp, target_idp_len);
3692 /* Get target client's entry */
3693 target_client = silc_idlist_find_client_by_id(server->local_list,
3694 client_id, TRUE, NULL);
3695 if (!target_client) {
3696 target_client = silc_idlist_find_client_by_id(server->global_list,
3697 client_id, TRUE, NULL);
3700 /* Check whether target client is on the channel */
3701 if (!silc_server_client_on_channel(target_client, channel, &chl)) {
3702 silc_server_command_send_status_data2(cmd, SILC_COMMAND_KICK,
3703 SILC_STATUS_ERR_USER_NOT_ON_CHANNEL,
3704 0, 2, target_idp, target_idp_len,
3709 /* Check that the target client is not channel founder. Channel founder
3710 cannot be kicked from the channel. */
3711 if (chl->mode & SILC_CHANNEL_UMODE_CHANFO) {
3712 silc_server_command_send_status_data(cmd, SILC_COMMAND_KICK,
3713 SILC_STATUS_ERR_NO_CHANNEL_FOPRIV,
3714 0, 2, tmp, tmp_len);
3719 comment = silc_argument_get_arg_type(cmd->args, 3, &clen);
3724 /* Send the reply back to the client */
3726 silc_command_reply_payload_encode_va(SILC_COMMAND_KICK,
3727 SILC_STATUS_OK, 0, ident, 2,
3729 3, target_idp, target_idp_len);
3730 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
3731 packet->data, packet->len, FALSE);
3732 silc_buffer_free(packet);
3734 /* Send KICKED notify to local clients on the channel */
3735 idp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
3736 silc_server_send_notify_to_channel(server, NULL, channel, FALSE, TRUE,
3737 SILC_NOTIFY_TYPE_KICKED, 3,
3738 target_idp, target_idp_len,
3739 comment, comment ? strlen(comment) : 0,
3740 idp->data, idp->len);
3741 silc_buffer_free(idp);
3743 /* Send KICKED notify to primary route */
3744 silc_server_send_notify_kicked(server, SILC_PRIMARY_ROUTE(server),
3745 SILC_BROADCAST(server), channel,
3746 target_client->id, client->id, comment);
3748 /* Remove the client from channel's invite list */
3749 if (channel->invite_list && silc_hash_table_count(channel->invite_list)) {
3751 silc_argument_payload_encode_one(NULL, target_idp, target_idp_len, 3);
3752 SilcArgumentPayload args =
3753 silc_argument_payload_parse(ab->data, ab->len, 1);
3754 silc_server_inviteban_process(server, channel->invite_list, 1, args);
3755 silc_buffer_free(ab);
3756 silc_argument_payload_free(args);
3759 /* Remove the client from the channel. If the channel does not exist
3760 after removing the client then the client kicked itself off the channel
3761 and we don't have to send anything after that. */
3762 if (!silc_server_remove_from_one_channel(server, NULL, channel,
3763 target_client, FALSE))
3766 if (!(channel->mode & SILC_CHANNEL_MODE_PRIVKEY)) {
3767 /* Re-generate channel key */
3768 if (!silc_server_create_channel_key(server, channel, 0))
3771 /* Send the channel key to the channel. The key of course is not sent
3772 to the client who was kicked off the channel. */
3773 silc_server_send_channel_key(server, target_client->connection, channel,
3774 server->server_type == SILC_ROUTER ?
3775 FALSE : !server->standalone);
3779 silc_server_command_free(cmd);
3782 /* Server side of OPER command. Client uses this comand to obtain server
3783 operator privileges to this server/router. */
3785 SILC_SERVER_CMD_FUNC(oper)
3787 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
3788 SilcServer server = cmd->server;
3789 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
3790 unsigned char *username, *auth;
3792 SilcServerConfigAdmin *admin;
3793 SilcIDListData idata = (SilcIDListData)client;
3794 bool result = FALSE;
3795 SilcPublicKey cached_key;
3797 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT || !client)
3800 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_OPER, cmd, 1, 2);
3802 /* Get the username */
3803 username = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
3805 silc_server_command_send_status_reply(cmd, SILC_COMMAND_OPER,
3806 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
3811 /* Get the admin configuration */
3812 admin = silc_server_config_find_admin(server, cmd->sock->ip,
3813 username, client->nickname);
3815 admin = silc_server_config_find_admin(server, cmd->sock->hostname,
3816 username, client->nickname);
3818 silc_server_command_send_status_reply(cmd, SILC_COMMAND_OPER,
3819 SILC_STATUS_ERR_AUTH_FAILED,
3821 SILC_LOG_INFO(("OPER authentication failed for username '%s' by "
3822 "nickname '%s' from %s", username,
3823 client->nickname, cmd->sock->hostname));
3828 /* Get the authentication payload */
3829 auth = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
3831 silc_server_command_send_status_reply(cmd, SILC_COMMAND_OPER,
3832 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
3837 /* Verify the authentication data. If both passphrase and public key
3838 is set then try both of them. */
3839 if (admin->passphrase)
3840 result = silc_auth_verify_data(auth, tmp_len, SILC_AUTH_PASSWORD,
3841 admin->passphrase, admin->passphrase_len,
3842 idata->hash, client->id, SILC_ID_CLIENT);
3843 if (!result && admin->publickeys) {
3844 cached_key = silc_server_get_public_key(server, admin->publickeys);
3847 result = silc_auth_verify_data(auth, tmp_len, SILC_AUTH_PUBLIC_KEY,
3848 cached_key, 0, idata->hash,
3849 client->id, SILC_ID_CLIENT);
3852 /* Authentication failed */
3853 silc_server_command_send_status_reply(cmd, SILC_COMMAND_OPER,
3854 SILC_STATUS_ERR_AUTH_FAILED,
3859 /* Client is now server operator */
3860 client->mode |= SILC_UMODE_SERVER_OPERATOR;
3862 /* Update statistics */
3863 if (SILC_IS_LOCAL(client))
3864 server->stat.my_server_ops++;
3865 if (server->server_type == SILC_ROUTER)
3866 server->stat.server_ops++;
3868 /* Send UMODE change to primary router */
3869 silc_server_send_notify_umode(server, SILC_PRIMARY_ROUTE(server),
3870 SILC_BROADCAST(server), client->id,
3873 /* Check if anyone is watching this nickname */
3874 if (server->server_type == SILC_ROUTER)
3875 silc_server_check_watcher_list(server, client, NULL,
3876 SILC_NOTIFY_TYPE_UMODE_CHANGE);
3878 /* Send reply to the sender */
3879 silc_server_command_send_status_reply(cmd, SILC_COMMAND_OPER,
3883 silc_server_command_free(cmd);
3886 SILC_TASK_CALLBACK(silc_server_command_detach_cb)
3888 SilcServer server = app_context;
3889 QuitInternal q = (QuitInternal)context;
3890 SilcClientID *client_id = (SilcClientID *)q->sock;
3891 SilcClientEntry client;
3892 SilcSocketConnection sock;
3894 client = silc_idlist_find_client_by_id(server->local_list, client_id,
3896 if (client && client->connection) {
3897 sock = client->connection;
3899 /* If there is pending outgoing data for the client then purge it
3900 to the network before closing connection. */
3901 silc_server_packet_queue_purge(server, sock);
3903 /* Close the connection on our side */
3904 client->router = NULL;
3905 client->connection = NULL;
3906 sock->user_data = NULL;
3907 silc_server_close_connection(server, sock);
3910 silc_free(client_id);
3914 SILC_TASK_CALLBACK(silc_server_command_detach_timeout)
3916 SilcServer server = app_context;
3917 QuitInternal q = (QuitInternal)context;
3918 SilcClientID *client_id = (SilcClientID *)q->sock;
3919 SilcClientEntry client;
3921 client = silc_idlist_find_client_by_id(server->local_list, client_id,
3923 if (client && client->mode & SILC_UMODE_DETACHED) {
3924 SILC_LOG_DEBUG(("Detach timeout"));
3925 silc_server_free_client_data(server, NULL, client, TRUE,
3929 silc_free(client_id);
3933 /* Server side of DETACH command. Detached the client from the network
3934 by closing the connection but preserving the session. */
3936 SILC_SERVER_CMD_FUNC(detach)
3938 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
3939 SilcServer server = cmd->server;
3940 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
3943 if (server->config->detach_disabled) {
3944 silc_server_command_send_status_reply(cmd, SILC_COMMAND_DETACH,
3945 SILC_STATUS_ERR_OPERATION_ALLOWED,
3950 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT || !client)
3953 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_DETACH, cmd, 0, 0);
3955 /* Remove operator privileges, since the client may resume in some
3956 other server which to it does not have operator privileges. */
3957 SILC_OPER_STATS_UPDATE(client, server, SILC_UMODE_SERVER_OPERATOR);
3958 SILC_OPER_STATS_UPDATE(client, router, SILC_UMODE_ROUTER_OPERATOR);
3960 /* Send the user mode notify to notify that client is detached */
3961 client->mode |= SILC_UMODE_DETACHED;
3962 client->data.status &= ~SILC_IDLIST_STATUS_RESUMED;
3963 client->data.status &= ~SILC_IDLIST_STATUS_NOATTR;
3964 client->last_command = 0;
3965 client->fast_command = 0;
3966 silc_server_send_notify_umode(server, SILC_PRIMARY_ROUTE(server),
3967 SILC_BROADCAST(server), client->id,
3969 server->stat.my_detached++;
3971 /* Check if anyone is watching this nickname */
3972 if (server->server_type == SILC_ROUTER)
3973 silc_server_check_watcher_list(server, client, NULL,
3974 SILC_NOTIFY_TYPE_UMODE_CHANGE);
3976 q = silc_calloc(1, sizeof(*q));
3977 q->sock = silc_id_dup(client->id, SILC_ID_CLIENT);
3978 silc_schedule_task_add(server->schedule, 0, silc_server_command_detach_cb,
3979 q, 0, 200000, SILC_TASK_TIMEOUT, SILC_TASK_PRI_LOW);
3981 if (server->config->detach_timeout) {
3982 q = silc_calloc(1, sizeof(*q));
3983 q->sock = silc_id_dup(client->id, SILC_ID_CLIENT);
3984 silc_schedule_task_add(server->schedule, 0,
3985 silc_server_command_detach_timeout,
3986 q, server->config->detach_timeout * 60,
3987 0, SILC_TASK_TIMEOUT, SILC_TASK_PRI_LOW);
3990 /* Send reply to the sender */
3991 silc_server_command_send_status_reply(cmd, SILC_COMMAND_DETACH,
3995 silc_server_command_free(cmd);
3998 /* Server side of WATCH command. */
4000 SILC_SERVER_CMD_FUNC(watch)
4002 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4003 SilcServer server = cmd->server;
4004 char *add_nick, *del_nick;
4005 SilcUInt32 add_nick_len, del_nick_len, tmp_len;
4007 unsigned char hash[16], *tmp;
4008 SilcClientEntry client;
4009 SilcClientID *client_id = NULL;
4011 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_WATCH, cmd, 1, 3);
4013 if (server->server_type != SILC_ROUTER && !server->standalone) {
4014 if (!cmd->pending) {
4015 /* Send the command to router */
4017 SilcUInt16 old_ident;
4019 SILC_LOG_DEBUG(("Forwarding WATCH to router"));
4021 old_ident = silc_command_get_ident(cmd->payload);
4022 silc_command_set_ident(cmd->payload, ++server->cmd_ident);
4023 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
4025 silc_server_packet_send(server, SILC_PRIMARY_ROUTE(server),
4026 SILC_PACKET_COMMAND, cmd->packet->flags,
4027 tmpbuf->data, tmpbuf->len, TRUE);
4029 /* Reprocess this packet after received reply from router */
4030 silc_server_command_pending(server, SILC_COMMAND_WATCH,
4031 silc_command_get_ident(cmd->payload),
4032 silc_server_command_watch,
4033 silc_server_command_dup(cmd));
4034 cmd->pending = TRUE;
4035 silc_command_set_ident(cmd->payload, old_ident);
4036 silc_buffer_free(tmpbuf);
4037 } else if (context2) {
4038 /* Received reply from router, just send same data to the client. */
4039 SilcServerCommandReplyContext reply = context2;
4042 SILC_LOG_DEBUG(("Received reply to WATCH from router"));
4043 silc_command_get_status(reply->payload, &status, NULL);
4044 silc_server_command_send_status_reply(cmd, SILC_COMMAND_WATCH, status,
4051 /* We are router and keep the watch list for local cell */
4053 /* Get the client ID */
4054 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
4056 silc_server_command_send_status_reply(cmd, SILC_COMMAND_WATCH,
4057 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
4061 client_id = silc_id_payload_parse_id(tmp, tmp_len, NULL);
4063 silc_server_command_send_status_data(cmd, SILC_COMMAND_WATCH,
4064 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID,
4065 0, 2, tmp, tmp_len);
4069 /* Get the client entry which must be in local list */
4070 client = silc_idlist_find_client_by_id(server->local_list,
4071 client_id, TRUE, NULL);
4073 silc_server_command_send_status_data(cmd, SILC_COMMAND_WATCH,
4074 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID, 0,
4080 add_nick = silc_argument_get_arg_type(cmd->args, 2, &add_nick_len);
4081 del_nick = silc_argument_get_arg_type(cmd->args, 3, &del_nick_len);
4082 if (!add_nick && !del_nick) {
4083 silc_server_command_send_status_reply(cmd, SILC_COMMAND_WATCH,
4084 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
4089 if (add_nick && add_nick_len > 128)
4090 add_nick[128] = '\0';
4091 if (del_nick && del_nick_len > 128)
4092 del_nick[128] = '\0';
4094 memset(nick, 0, sizeof(nick));
4096 /* Add new nickname to be watched in our cell */
4098 if (silc_server_name_bad_chars(add_nick, strlen(add_nick)) == TRUE) {
4099 silc_server_command_send_status_reply(cmd, SILC_COMMAND_WATCH,
4100 SILC_STATUS_ERR_BAD_NICKNAME, 0);
4104 /* Hash the nick, we have the hash saved, not nicks because we can
4105 do one to one mapping to the nick from Client ID hash this way. */
4106 silc_to_lower(add_nick, nick, sizeof(nick) - 1);
4107 silc_hash_make(server->md5hash, nick, strlen(nick), hash);
4109 /* Check whether this client is already watching this nickname */
4110 if (silc_hash_table_find_by_context(server->watcher_list, hash,
4112 /* Nickname is alredy being watched for this client */
4113 silc_server_command_send_status_reply(cmd, SILC_COMMAND_WATCH,
4114 SILC_STATUS_ERR_NICKNAME_IN_USE,
4119 /* Get the nickname from the watcher list and use the same key in
4120 new entries as well. If key doesn't exist then create it. */
4121 if (!silc_hash_table_find(server->watcher_list, hash, (void *)&tmp, NULL))
4122 tmp = silc_memdup(hash, CLIENTID_HASH_LEN);
4124 /* Add the client to the watcher list with the specified nickname hash. */
4125 silc_hash_table_add(server->watcher_list, tmp, client);
4128 /* Delete nickname from watch list */
4130 if (silc_server_name_bad_chars(del_nick, strlen(del_nick)) == TRUE) {
4131 silc_server_command_send_status_reply(cmd, SILC_COMMAND_WATCH,
4132 SILC_STATUS_ERR_BAD_NICKNAME, 0);
4136 /* Hash the nick, we have the hash saved, not nicks because we can
4137 do one to one mapping to the nick from Client ID hash this way. */
4138 silc_to_lower(del_nick, nick, sizeof(nick) - 1);
4139 silc_hash_make(server->md5hash, nick, strlen(nick), hash);
4141 /* Check that this client is watching for this nickname */
4142 if (!silc_hash_table_find_by_context(server->watcher_list, hash,
4143 client, (void *)&tmp)) {
4144 /* Nickname is alredy being watched for this client */
4145 silc_server_command_send_status_data(cmd, SILC_COMMAND_WATCH,
4146 SILC_STATUS_ERR_NO_SUCH_NICK, 0,
4147 2, nick, strlen(nick));
4151 /* Delete the nickname from the watcher list. */
4152 silc_hash_table_del_by_context(server->watcher_list, hash, client);
4154 /* Now check whether there still exists entries with this key, if not
4155 then free the key to not leak memory. */
4156 if (!silc_hash_table_find(server->watcher_list, hash, NULL, NULL))
4160 /* Distribute the watch list to backup routers too */
4161 if (server->backup) {
4163 silc_command_set_ident(cmd->payload, ++server->cmd_ident);
4164 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
4165 silc_server_backup_send(server, NULL, SILC_PACKET_COMMAND,
4166 cmd->packet->flags, tmpbuf->data, tmpbuf->len,
4168 silc_buffer_free(tmpbuf);
4171 silc_server_command_send_status_reply(cmd, SILC_COMMAND_WATCH,
4175 silc_free(client_id);
4176 silc_server_command_free(cmd);
4179 /* Server side of SILCOPER command. Client uses this comand to obtain router
4180 operator privileges to this router. */
4182 SILC_SERVER_CMD_FUNC(silcoper)
4184 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4185 SilcServer server = cmd->server;
4186 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
4187 unsigned char *username, *auth;
4189 SilcServerConfigAdmin *admin;
4190 SilcIDListData idata = (SilcIDListData)client;
4191 bool result = FALSE;
4192 SilcPublicKey cached_key;
4194 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT || !client)
4197 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_SILCOPER, cmd, 1, 2);
4199 if (server->server_type != SILC_ROUTER) {
4200 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
4201 SILC_STATUS_ERR_AUTH_FAILED, 0);
4205 /* Get the username */
4206 username = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
4208 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
4209 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
4214 /* Get the admin configuration */
4215 admin = silc_server_config_find_admin(server, cmd->sock->ip,
4216 username, client->nickname);
4218 admin = silc_server_config_find_admin(server, cmd->sock->hostname,
4219 username, client->nickname);
4221 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
4222 SILC_STATUS_ERR_AUTH_FAILED, 0);
4223 SILC_LOG_INFO(("SILCOPER authentication failed for username '%s' by "
4224 "nickname '%s' from %s", username,
4225 client->nickname, cmd->sock->hostname));
4230 /* Get the authentication payload */
4231 auth = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
4233 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
4234 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
4239 /* Verify the authentication data. If both passphrase and public key
4240 is set then try both of them. */
4241 if (admin->passphrase)
4242 result = silc_auth_verify_data(auth, tmp_len, SILC_AUTH_PASSWORD,
4243 admin->passphrase, admin->passphrase_len,
4244 idata->hash, client->id, SILC_ID_CLIENT);
4245 if (!result && admin->publickeys) {
4246 cached_key = silc_server_get_public_key(server, admin->publickeys);
4249 result = silc_auth_verify_data(auth, tmp_len, SILC_AUTH_PUBLIC_KEY,
4250 cached_key, 0, idata->hash,
4251 client->id, SILC_ID_CLIENT);
4254 /* Authentication failed */
4255 silc_server_command_send_status_reply(cmd, SILC_COMMAND_OPER,
4256 SILC_STATUS_ERR_AUTH_FAILED, 0);
4260 /* Client is now router operator */
4261 client->mode |= SILC_UMODE_ROUTER_OPERATOR;
4263 /* Update statistics */
4264 if (SILC_IS_LOCAL(client))
4265 server->stat.my_router_ops++;
4266 if (server->server_type == SILC_ROUTER)
4267 server->stat.router_ops++;
4269 /* Send UMODE change to primary router */
4270 silc_server_send_notify_umode(server, SILC_PRIMARY_ROUTE(server),
4271 SILC_BROADCAST(server), client->id,
4274 /* Check if anyone is watching this nickname */
4275 if (server->server_type == SILC_ROUTER)
4276 silc_server_check_watcher_list(server, client, NULL,
4277 SILC_NOTIFY_TYPE_UMODE_CHANGE);
4279 /* Send reply to the sender */
4280 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
4284 silc_server_command_free(cmd);
4287 /* Server side of command BAN. This is used to manage the ban list of the
4288 channel. To add clients and remove clients from the ban list. */
4290 SILC_SERVER_CMD_FUNC(ban)
4292 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4293 SilcServer server = cmd->server;
4294 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
4295 SilcBuffer packet, list, tmp2;
4296 SilcChannelEntry channel;
4297 SilcChannelClientEntry chl;
4298 SilcChannelID *channel_id = NULL;
4299 unsigned char *id, *tmp, *atype = NULL;
4300 SilcUInt32 id_len, len, len2;
4301 SilcArgumentPayload args;
4302 SilcHashTableList htl;
4304 SilcUInt16 argc = 0, ident = silc_command_get_ident(cmd->payload);
4305 SilcBufferStruct blist;
4307 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT || !client)
4310 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_BAN, cmd, 0, 3);
4312 /* Get Channel ID */
4313 id = silc_argument_get_arg_type(cmd->args, 1, &id_len);
4315 channel_id = silc_id_payload_parse_id(id, id_len, NULL);
4317 silc_server_command_send_status_reply(cmd, SILC_COMMAND_BAN,
4318 SILC_STATUS_ERR_NO_CHANNEL_ID, 0);
4323 /* Get channel entry. The server must know about the channel since the
4324 client is expected to be on the channel. */
4325 channel = silc_idlist_find_channel_by_id(server->local_list,
4328 channel = silc_idlist_find_channel_by_id(server->global_list,
4331 silc_server_command_send_status_data(cmd, SILC_COMMAND_BAN,
4332 SILC_STATUS_ERR_NO_SUCH_CHANNEL_ID,
4338 /* Check whether this client is on the channel */
4339 if (!silc_server_client_on_channel(client, channel, &chl)) {
4340 silc_server_command_send_status_data(cmd, SILC_COMMAND_BAN,
4341 SILC_STATUS_ERR_NOT_ON_CHANNEL, 0,
4346 /* The client must be at least channel operator. */
4347 if (!(chl->mode & SILC_CHANNEL_UMODE_CHANOP)) {
4348 silc_server_command_send_status_data(cmd, SILC_COMMAND_BAN,
4349 SILC_STATUS_ERR_NO_CHANNEL_PRIV, 0,
4354 /* Get the ban information */
4355 tmp = silc_argument_get_arg_type(cmd->args, 3, &len2);
4356 if (tmp && len2 > 2) {
4357 /* Parse the arguments to see they are constructed correctly */
4358 SILC_GET16_MSB(argc, tmp);
4359 args = silc_argument_payload_parse(tmp + 2, len2 - 2, argc);
4361 silc_server_command_send_status_reply(cmd, SILC_COMMAND_BAN,
4362 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
4367 /* Get the type of action */
4368 atype = silc_argument_get_arg_type(cmd->args, 2, &len);
4369 if (atype && len == 1) {
4370 if (atype[0] == 0x00) {
4371 /* Allocate hash table for ban list if it doesn't exist yet */
4372 if (!channel->ban_list)
4374 silc_hash_table_alloc(0, silc_hash_ptr,
4376 silc_server_inviteban_destruct, channel,
4379 /* Check for resource limit */
4380 if (silc_hash_table_count(channel->ban_list) > 64) {
4381 silc_server_command_send_status_reply(cmd, SILC_COMMAND_BAN,
4382 SILC_STATUS_ERR_RESOURCE_LIMIT,
4388 /* Now add or delete the information. */
4389 silc_server_inviteban_process(server, channel->ban_list,
4390 (SilcUInt8)atype[0], args);
4392 silc_argument_payload_free(args);
4395 /* Encode ban list */
4397 if (channel->ban_list && silc_hash_table_count(channel->ban_list)) {
4398 list = silc_buffer_alloc_size(2);
4399 silc_buffer_format(list,
4400 SILC_STR_UI_SHORT(silc_hash_table_count(
4401 channel->ban_list)),
4403 silc_hash_table_list(channel->ban_list, &htl);
4404 while (silc_hash_table_get(&htl, (void *)&type, (void *)&tmp2))
4405 list = silc_argument_payload_encode_one(list, tmp2->data, tmp2->len,
4407 silc_hash_table_list_reset(&htl);
4410 /* Send BAN notify type to local servers (but not clients) and to
4412 if (atype && tmp && len2) {
4413 silc_buffer_set(&blist, tmp, len2);
4415 /* Send to local servers if we are router */
4416 if (server->server_type == SILC_ROUTER)
4417 silc_server_send_notify_to_channel(server, NULL, channel, FALSE, FALSE,
4418 SILC_NOTIFY_TYPE_BAN, 3,
4421 tmp ? blist.data : NULL,
4422 tmp ? blist.len : 0);
4424 /* Send to network. */
4425 silc_server_send_notify_ban(server, SILC_PRIMARY_ROUTE(server),
4426 SILC_BROADCAST(server), channel, atype,
4430 /* Send the reply back to the client */
4432 silc_command_reply_payload_encode_va(SILC_COMMAND_BAN,
4433 SILC_STATUS_OK, 0, ident, 2,
4435 3, list ? list->data : NULL,
4436 list ? list->len : 0);
4437 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
4438 packet->data, packet->len, FALSE);
4440 silc_buffer_free(packet);
4441 silc_buffer_free(list);
4444 silc_free(channel_id);
4445 silc_server_command_free(cmd);
4448 /* Server side command of LEAVE. Removes client from a channel. */
4450 SILC_SERVER_CMD_FUNC(leave)
4452 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4453 SilcServer server = cmd->server;
4454 SilcSocketConnection sock = cmd->sock;
4455 SilcClientEntry id_entry = (SilcClientEntry)cmd->sock->user_data;
4456 SilcChannelID *id = NULL;
4457 SilcChannelEntry channel;
4461 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT || !id_entry)
4464 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_LEAVE, cmd, 1, 2);
4466 /* Get Channel ID */
4467 tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
4469 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
4470 SILC_STATUS_ERR_NO_CHANNEL_ID, 0);
4473 id = silc_id_payload_parse_id(tmp, len, NULL);
4475 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
4476 SILC_STATUS_ERR_NO_CHANNEL_ID, 0);
4480 /* Get channel entry */
4481 channel = silc_idlist_find_channel_by_id(server->local_list, id, NULL);
4483 channel = silc_idlist_find_channel_by_id(server->global_list, id, NULL);
4485 silc_server_command_send_status_data(cmd, SILC_COMMAND_LEAVE,
4486 SILC_STATUS_ERR_NO_SUCH_CHANNEL_ID,
4492 /* Check whether this client is on the channel */
4493 if (!silc_server_client_on_channel(id_entry, channel, NULL)) {
4494 silc_server_command_send_status_data(cmd, SILC_COMMAND_LEAVE,
4495 SILC_STATUS_ERR_NOT_ON_CHANNEL, 0,
4500 /* Notify routers that they should remove this client from their list
4501 of clients on the channel. Send LEAVE notify type. */
4502 silc_server_send_notify_leave(server, SILC_PRIMARY_ROUTE(server),
4503 SILC_BROADCAST(server), channel, id_entry->id);
4505 silc_server_command_send_status_data(cmd, SILC_COMMAND_LEAVE,
4506 SILC_STATUS_OK, 0, 2, tmp, len);
4508 /* Remove client from channel */
4509 if (!silc_server_remove_from_one_channel(server, sock, channel, id_entry,
4511 /* If the channel does not exist anymore we won't send anything */
4514 if (!(channel->mode & SILC_CHANNEL_MODE_PRIVKEY)) {
4515 /* Re-generate channel key */
4516 if (!silc_server_create_channel_key(server, channel, 0))
4519 /* Send the channel key */
4520 silc_server_send_channel_key(server, NULL, channel,
4521 server->server_type == SILC_ROUTER ?
4522 FALSE : !server->standalone);
4527 silc_server_command_free(cmd);
4530 /* Server side of command USERS. Resolves clients and their USERS currently
4531 joined on the requested channel. The list of Client ID's and their modes
4532 on the channel is sent back. */
4534 SILC_SERVER_CMD_FUNC(users)
4536 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4537 SilcServer server = cmd->server;
4538 SilcChannelEntry channel;
4539 SilcChannelID *id = NULL;
4540 SilcBuffer packet, idp;
4541 unsigned char *channel_id;
4542 SilcUInt32 channel_id_len;
4543 SilcBuffer client_id_list;
4544 SilcBuffer client_mode_list;
4545 unsigned char lc[4];
4546 SilcUInt32 list_count = 0;
4547 SilcUInt16 ident = silc_command_get_ident(cmd->payload);
4550 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_USERS, cmd, 1, 2);
4552 /* Get Channel ID */
4553 channel_id = silc_argument_get_arg_type(cmd->args, 1, &channel_id_len);
4555 /* Get channel name */
4556 channel_name = silc_argument_get_arg_type(cmd->args, 2, NULL);
4558 if (!channel_id && !channel_name) {
4559 silc_server_command_send_status_reply(cmd, SILC_COMMAND_USERS,
4560 SILC_STATUS_ERR_NO_CHANNEL_ID, 0);
4565 id = silc_id_payload_parse_id(channel_id, channel_id_len, NULL);
4567 silc_server_command_send_status_data(cmd, SILC_COMMAND_USERS,
4568 SILC_STATUS_ERR_BAD_CHANNEL_ID, 0,
4569 2, channel_id, channel_id_len);
4574 /* If we are server and we don't know about this channel we will send
4575 the command to our router. If we know about the channel then we also
4576 have the list of users already. */
4578 channel = silc_idlist_find_channel_by_id(server->local_list, id, NULL);
4580 channel = silc_idlist_find_channel_by_name(server->local_list,
4581 channel_name, NULL);
4583 if (!channel || (!server->standalone && (channel->disabled ||
4584 !channel->users_resolved))) {
4585 if (server->server_type != SILC_ROUTER && !server->standalone &&
4589 silc_command_set_ident(cmd->payload, ++server->cmd_ident);
4590 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
4592 /* Send USERS command */
4593 silc_server_packet_send(server, SILC_PRIMARY_ROUTE(server),
4594 SILC_PACKET_COMMAND, cmd->packet->flags,
4595 tmpbuf->data, tmpbuf->len, TRUE);
4597 /* Reprocess this packet after received reply */
4598 silc_server_command_pending(server, SILC_COMMAND_USERS,
4599 silc_command_get_ident(cmd->payload),
4600 silc_server_command_users,
4601 silc_server_command_dup(cmd));
4602 cmd->pending = TRUE;
4603 silc_command_set_ident(cmd->payload, ident);
4604 silc_buffer_free(tmpbuf);
4609 /* Check the global list as well. */
4611 channel = silc_idlist_find_channel_by_id(server->global_list, id, NULL);
4613 channel = silc_idlist_find_channel_by_name(server->global_list,
4614 channel_name, NULL);
4616 /* Channel really does not exist */
4618 silc_server_command_send_status_data(
4619 cmd, SILC_COMMAND_USERS,
4620 SILC_STATUS_ERR_NO_SUCH_CHANNEL_ID, 0,
4621 2, channel_id, channel_id_len);
4623 silc_server_command_send_status_data(
4624 cmd, SILC_COMMAND_USERS,
4625 SILC_STATUS_ERR_NO_SUCH_CHANNEL, 0,
4626 2, channel_name, strlen(channel_name));
4631 /* If the channel is private or secret do not send anything, unless the
4632 user requesting this command is on the channel or is server */
4633 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT) {
4634 if (channel->mode & (SILC_CHANNEL_MODE_PRIVATE | SILC_CHANNEL_MODE_SECRET)
4635 && !silc_server_client_on_channel(cmd->sock->user_data, channel,
4637 silc_server_command_send_status_data(cmd, SILC_COMMAND_USERS,
4638 SILC_STATUS_ERR_NO_SUCH_CHANNEL, 0,
4639 2, channel->channel_name,
4640 strlen(channel->channel_name));
4645 /* Get the users list */
4646 if (!silc_server_get_users_on_channel(server, channel, &client_id_list,
4647 &client_mode_list, &list_count)) {
4649 client_id_list = NULL;
4650 client_mode_list = NULL;
4654 SILC_PUT32_MSB(list_count, lc);
4657 idp = silc_id_payload_encode(channel->id, SILC_ID_CHANNEL);
4658 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_USERS,
4659 SILC_STATUS_OK, 0, ident, 4,
4660 2, idp->data, idp->len,
4663 client_id_list->data : NULL,
4665 client_id_list->len : 0,
4666 5, client_mode_list ?
4667 client_mode_list->data : NULL,
4669 client_mode_list->len : 0);
4670 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
4671 packet->data, packet->len, FALSE);
4673 silc_buffer_free(idp);
4674 silc_buffer_free(packet);
4676 silc_buffer_free(client_id_list);
4677 if (client_mode_list)
4678 silc_buffer_free(client_mode_list);
4682 silc_server_command_free(cmd);
4685 /* Server side of command GETKEY. This fetches the client's public key
4686 from the server where to the client is connected. */
4688 SILC_SERVER_CMD_FUNC(getkey)
4690 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4691 SilcServer server = cmd->server;
4693 SilcClientEntry client;
4694 SilcServerEntry server_entry;
4695 SilcClientID *client_id = NULL;
4696 SilcServerID *server_id = NULL;
4697 SilcIDPayload idp = NULL;
4698 SilcUInt16 ident = silc_command_get_ident(cmd->payload);
4701 SilcBuffer pk = NULL;
4703 SilcPublicKey public_key;
4705 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
4707 silc_server_command_send_status_reply(cmd, SILC_COMMAND_GETKEY,
4708 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
4712 idp = silc_id_payload_parse(tmp, tmp_len);
4714 silc_server_command_send_status_reply(cmd, SILC_COMMAND_GETKEY,
4715 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
4720 id_type = silc_id_payload_get_type(idp);
4721 if (id_type == SILC_ID_CLIENT) {
4722 client_id = silc_id_payload_get_id(idp);
4724 /* If the client is not found from local list there is no chance it
4725 would be locally connected client so send the command further. */
4726 client = silc_idlist_find_client_by_id(server->local_list,
4727 client_id, TRUE, NULL);
4729 client = silc_idlist_find_client_by_id(server->global_list,
4730 client_id, TRUE, NULL);
4732 if ((!client && !cmd->pending && !server->standalone) ||
4733 (client && !client->connection && !cmd->pending &&
4734 !(client->mode & SILC_UMODE_DETACHED)) ||
4735 (client && !client->data.public_key && !cmd->pending)) {
4737 SilcUInt16 old_ident;
4738 SilcSocketConnection dest_sock;
4740 dest_sock = silc_server_get_client_route(server, NULL, 0,
4741 client_id, NULL, NULL);
4745 old_ident = silc_command_get_ident(cmd->payload);
4746 silc_command_set_ident(cmd->payload, ++server->cmd_ident);
4747 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
4749 silc_server_packet_send(server, dest_sock,
4750 SILC_PACKET_COMMAND, cmd->packet->flags,
4751 tmpbuf->data, tmpbuf->len, TRUE);
4753 /* Reprocess this packet after received reply from router */
4754 silc_server_command_pending(server, SILC_COMMAND_GETKEY,
4755 silc_command_get_ident(cmd->payload),
4756 silc_server_command_getkey,
4757 silc_server_command_dup(cmd));
4758 cmd->pending = TRUE;
4759 silc_command_set_ident(cmd->payload, old_ident);
4760 silc_buffer_free(tmpbuf);
4765 silc_server_command_send_status_data(cmd, SILC_COMMAND_GETKEY,
4766 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID,
4767 0, 2, tmp, tmp_len);
4771 /* The client is locally connected, just get the public key and
4772 send it back. If they key does not exist then do not send it,
4773 send just OK reply */
4774 public_key = client->data.public_key;
4776 pk = silc_pkcs_public_key_payload_encode(public_key);
4777 } else if (id_type == SILC_ID_SERVER) {
4778 server_id = silc_id_payload_get_id(idp);
4780 /* If the server is not found from local list there is no chance it
4781 would be locally connected server so send the command further. */
4782 server_entry = silc_idlist_find_server_by_id(server->local_list,
4783 server_id, TRUE, NULL);
4785 server_entry = silc_idlist_find_server_by_id(server->global_list,
4786 server_id, TRUE, NULL);
4788 if (server_entry != server->id_entry &&
4789 ((!server_entry && !cmd->pending && !server->standalone) ||
4790 (server_entry && !server_entry->connection && !cmd->pending &&
4791 !server->standalone) ||
4792 (server_entry && !server_entry->data.public_key && !cmd->pending &&
4793 !server->standalone))) {
4795 SilcUInt16 old_ident;
4797 old_ident = silc_command_get_ident(cmd->payload);
4798 silc_command_set_ident(cmd->payload, ++server->cmd_ident);
4799 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
4801 silc_server_packet_send(server, SILC_PRIMARY_ROUTE(server),
4802 SILC_PACKET_COMMAND, cmd->packet->flags,
4803 tmpbuf->data, tmpbuf->len, TRUE);
4805 /* Reprocess this packet after received reply from router */
4806 silc_server_command_pending(server, SILC_COMMAND_GETKEY,
4807 silc_command_get_ident(cmd->payload),
4808 silc_server_command_getkey,
4809 silc_server_command_dup(cmd));
4810 cmd->pending = TRUE;
4811 silc_command_set_ident(cmd->payload, old_ident);
4812 silc_buffer_free(tmpbuf);
4816 if (!server_entry) {
4817 silc_server_command_send_status_data(cmd, SILC_COMMAND_GETKEY,
4818 SILC_STATUS_ERR_NO_SUCH_SERVER_ID,
4819 0, 2, tmp, tmp_len);
4823 /* If they key does not exist then do not send it, send just OK reply */
4824 public_key = (!server_entry->data.public_key ?
4825 (server_entry == server->id_entry ? server->public_key :
4826 NULL) : server_entry->data.public_key);
4828 pk = silc_pkcs_public_key_payload_encode(public_key);
4833 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
4834 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_GETKEY,
4835 SILC_STATUS_OK, 0, ident, 2,
4837 3, pk ? pk->data : NULL,
4839 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
4840 packet->data, packet->len, FALSE);
4841 silc_buffer_free(packet);
4845 silc_id_payload_free(idp);
4846 silc_buffer_free(pk);
4847 silc_free(client_id);
4848 silc_free(server_id);
4849 silc_server_command_free(cmd);
4853 /* Private range commands, specific to this implementation */
4855 /* Server side command of CONNECT. Connects us to the specified remote
4856 server or router. */
4858 SILC_SERVER_CMD_FUNC(connect)
4860 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4861 SilcServer server = cmd->server;
4862 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
4863 unsigned char *tmp, *host;
4865 SilcUInt32 port = SILC_PORT;
4867 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT || !client)
4870 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_PRIV_CONNECT, cmd, 1, 2);
4872 /* Check whether client has the permissions. */
4873 if (!(client->mode & SILC_UMODE_SERVER_OPERATOR) &&
4874 !(client->mode & SILC_UMODE_ROUTER_OPERATOR)) {
4875 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PRIV_CONNECT,
4876 SILC_STATUS_ERR_NO_SERVER_PRIV, 0);
4880 if (server->server_type == SILC_ROUTER && !server->backup_router &&
4881 client->mode & SILC_UMODE_SERVER_OPERATOR) {
4882 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PRIV_CONNECT,
4883 SILC_STATUS_ERR_NO_ROUTER_PRIV, 0);
4887 /* Get the remote server */
4888 host = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
4890 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PRIV_CONNECT,
4891 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
4897 tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
4899 SILC_GET32_MSB(port, tmp);
4901 /* Create the connection. It is done with timeout and is async. */
4902 silc_server_create_connection(server, host, port);
4904 /* Send reply to the sender */
4905 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PRIV_CONNECT,
4909 silc_server_command_free(cmd);
4912 /* Server side command of CLOSE. Closes connection to a specified server. */
4914 SILC_SERVER_CMD_FUNC(close)
4916 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4917 SilcServer server = cmd->server;
4918 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
4919 SilcServerEntry server_entry;
4920 SilcSocketConnection sock;
4923 unsigned char *name;
4924 SilcUInt32 port = SILC_PORT;
4926 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT || !client)
4929 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_PRIV_CLOSE, cmd, 1, 2);
4931 /* Check whether client has the permissions. */
4932 if (!(client->mode & SILC_UMODE_SERVER_OPERATOR) &&
4933 !(client->mode & SILC_UMODE_ROUTER_OPERATOR)) {
4934 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PRIV_CLOSE,
4935 SILC_STATUS_ERR_NO_SERVER_PRIV,
4940 /* Get the remote server */
4941 name = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
4943 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PRIV_CLOSE,
4944 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
4950 tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
4952 SILC_GET32_MSB(port, tmp);
4954 server_entry = silc_idlist_find_server_by_conn(server->local_list,
4955 name, port, FALSE, NULL);
4957 server_entry = silc_idlist_find_server_by_conn(server->global_list,
4958 name, port, FALSE, NULL);
4959 if (!server_entry) {
4960 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PRIV_CLOSE,
4961 SILC_STATUS_ERR_NO_SERVER_ID, 0);
4965 if (server_entry == server->id_entry) {
4966 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PRIV_CLOSE,
4967 SILC_STATUS_ERR_NO_SERVER_ID, 0);
4971 /* Send reply to the sender */
4972 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PRIV_CLOSE,
4975 /* Close the connection to the server */
4976 sock = (SilcSocketConnection)server_entry->connection;
4978 server->backup_noswitch = TRUE;
4979 if (server->router == server_entry) {
4980 server->id_entry->router = NULL;
4981 server->router = NULL;
4982 server->standalone = TRUE;
4984 silc_server_disconnect_remote(server, sock,
4985 SILC_STATUS_ERR_BANNED_FROM_SERVER,
4986 "Closed by administrator");
4987 if (sock->user_data)
4988 silc_server_free_sock_user_data(server, sock, NULL);
4989 server->backup_noswitch = FALSE;
4992 silc_server_command_free(cmd);
4995 /* Server side command of SHUTDOWN. Shutdowns the server and closes all
4996 active connections. */
4998 SILC_SERVER_CMD_FUNC(shutdown)
5000 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
5001 SilcServer server = cmd->server;
5002 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
5004 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT || !client)
5007 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_PRIV_SHUTDOWN, cmd, 0, 0);
5009 /* Check whether client has the permission. */
5010 if (!(client->mode & SILC_UMODE_SERVER_OPERATOR) &&
5011 !(client->mode & SILC_UMODE_ROUTER_OPERATOR)) {
5012 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PRIV_SHUTDOWN,
5013 SILC_STATUS_ERR_NO_SERVER_PRIV,
5018 /* Send reply to the sender */
5019 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PRIV_SHUTDOWN,
5022 /* Then, gracefully, or not, bring the server down. */
5023 silc_server_stop(server);
5027 silc_server_command_free(cmd);