5 Author: Pekka Riikonen <priikone@poseidon.pspt.fi>
7 Copyright (C) 1997 - 2001 Pekka Riikonen
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
22 #include "serverincludes.h"
23 #include "server_internal.h"
25 static int silc_server_is_registered(SilcServer server,
26 SilcSocketConnection sock,
27 SilcServerCommandContext cmd,
30 silc_server_command_send_status_reply(SilcServerCommandContext cmd,
32 SilcCommandStatus status);
34 silc_server_command_send_status_data(SilcServerCommandContext cmd,
36 SilcCommandStatus status,
38 const unsigned char *arg,
41 silc_server_command_pending_error_check(SilcServerCommandContext cmd,
42 SilcServerCommandReplyContext cmdr,
44 SILC_TASK_CALLBACK(silc_server_command_process_timeout);
46 /* Server command list. */
47 SilcServerCommand silc_command_list[] =
49 SILC_SERVER_CMD(whois, WHOIS, SILC_CF_LAG | SILC_CF_REG),
50 SILC_SERVER_CMD(whowas, WHOWAS, SILC_CF_LAG | SILC_CF_REG),
51 SILC_SERVER_CMD(identify, IDENTIFY, SILC_CF_LAG | SILC_CF_REG),
52 SILC_SERVER_CMD(nick, NICK, SILC_CF_LAG_STRICT | SILC_CF_REG),
53 SILC_SERVER_CMD(list, LIST, SILC_CF_LAG_STRICT | SILC_CF_REG),
54 SILC_SERVER_CMD(topic, TOPIC, SILC_CF_LAG | SILC_CF_REG),
55 SILC_SERVER_CMD(invite, INVITE, SILC_CF_LAG | SILC_CF_REG),
56 SILC_SERVER_CMD(quit, QUIT, SILC_CF_LAG | SILC_CF_REG),
57 SILC_SERVER_CMD(kill, KILL, SILC_CF_LAG_STRICT | SILC_CF_REG | SILC_CF_OPER),
58 SILC_SERVER_CMD(info, INFO, SILC_CF_LAG | SILC_CF_REG),
59 SILC_SERVER_CMD(connect, CONNECT,
60 SILC_CF_LAG | SILC_CF_REG | SILC_CF_OPER),
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(close, CLOSE,
71 SILC_CF_LAG | SILC_CF_REG | SILC_CF_OPER),
72 SILC_SERVER_CMD(shutdown, SHUTDOWN, SILC_CF_LAG | SILC_CF_REG |
74 SILC_SERVER_CMD(silcoper, SILCOPER,
75 SILC_CF_LAG | SILC_CF_REG | SILC_CF_SILC_OPER),
76 SILC_SERVER_CMD(leave, LEAVE, SILC_CF_LAG_STRICT | SILC_CF_REG),
77 SILC_SERVER_CMD(users, USERS, SILC_CF_LAG | SILC_CF_REG),
78 SILC_SERVER_CMD(getkey, GETKEY, SILC_CF_LAG | SILC_CF_REG),
83 /* Performs several checks to the command. It first checks whether this
84 command was called as pending command callback. If it was then it checks
85 whether error occurred in the command reply where the pending command
88 It also checks that the requested command includes correct amount
90 #define SILC_SERVER_COMMAND_CHECK(command, context, min, max) \
94 SILC_LOG_DEBUG(("Start")); \
96 if (silc_server_command_pending_error_check(cmd, context2, command)) { \
97 silc_server_command_free(cmd); \
101 _argc = silc_argument_get_arg_num(cmd->args); \
103 silc_server_command_send_status_reply(cmd, command, \
104 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS); \
105 silc_server_command_free(cmd); \
109 silc_server_command_send_status_reply(cmd, command, \
110 SILC_STATUS_ERR_TOO_MANY_PARAMS); \
111 silc_server_command_free(cmd); \
116 /* Returns TRUE if the connection is registered. Unregistered connections
117 usually cannot send commands hence the check. */
119 static int silc_server_is_registered(SilcServer server,
120 SilcSocketConnection sock,
121 SilcServerCommandContext cmd,
124 SilcIDListData idata = (SilcIDListData)sock->user_data;
129 if (idata->status & SILC_IDLIST_STATUS_REGISTERED)
132 silc_server_command_send_status_reply(cmd, command,
133 SILC_STATUS_ERR_NOT_REGISTERED);
134 silc_server_command_free(cmd);
138 /* Internal context to hold data when executed command with timeout. */
140 SilcServerCommandContext ctx;
141 SilcServerCommand *cmd;
142 } *SilcServerCommandTimeout;
144 /* Timeout callback to process commands with timeout for client. Client's
145 commands are always executed with timeout. */
147 SILC_TASK_CALLBACK(silc_server_command_process_timeout)
149 SilcServerCommandTimeout timeout = (SilcServerCommandTimeout)context;
150 SilcClientEntry client = (SilcClientEntry)timeout->ctx->sock->user_data;
152 /* Update access time */
153 client->last_command = time(NULL);
155 if (!(timeout->cmd->flags & SILC_CF_REG))
156 timeout->cmd->cb(timeout->ctx, NULL);
157 else if (silc_server_is_registered(timeout->ctx->server,
161 timeout->cmd->cb(timeout->ctx, NULL);
166 /* Processes received command packet. */
168 void silc_server_command_process(SilcServer server,
169 SilcSocketConnection sock,
170 SilcPacketContext *packet)
172 SilcServerCommandContext ctx;
173 SilcServerCommand *cmd;
176 /* Allocate command context. This must be free'd by the
177 command routine receiving it. */
178 ctx = silc_server_command_alloc();
179 ctx->server = server;
180 ctx->sock = silc_socket_dup(sock);
181 ctx->packet = silc_packet_context_dup(packet); /* Save original packet */
183 /* Parse the command payload in the packet */
184 ctx->payload = silc_command_payload_parse(packet->buffer->data,
185 packet->buffer->len);
187 SILC_LOG_ERROR(("Bad command payload, packet dropped"));
188 silc_buffer_free(packet->buffer);
189 silc_packet_context_free(packet);
190 silc_socket_free(ctx->sock);
194 ctx->args = silc_command_get_args(ctx->payload);
196 /* Get the command */
197 command = silc_command_get(ctx->payload);
198 for (cmd = silc_command_list; cmd->cb; cmd++)
199 if (cmd->cmd == command)
203 silc_server_command_send_status_reply(ctx, command,
204 SILC_STATUS_ERR_UNKNOWN_COMMAND);
205 silc_server_command_free(ctx);
209 /* Execute client's commands always with timeout. Normally they are
210 executed with zero (0) timeout but if client is sending command more
211 frequently than once in 2 seconds, then the timeout may be 0 to 2
213 if (sock->type == SILC_SOCKET_TYPE_CLIENT) {
214 SilcClientEntry client = (SilcClientEntry)sock->user_data;
215 SilcServerCommandTimeout timeout = silc_calloc(1, sizeof(*timeout));
221 if (client->last_command && (time(NULL) - client->last_command) < 2) {
222 client->fast_command++;
225 client->fast_command = ((client->fast_command - 1) <= 0 ? 0 :
226 client->fast_command--);
230 if (!fast && ((cmd->flags & SILC_CF_LAG_STRICT) ||
231 (client->fast_command > 5 && cmd->flags & SILC_CF_LAG)))
232 silc_schedule_task_add(server->schedule, sock->sock,
233 silc_server_command_process_timeout,
235 2 - (time(NULL) - client->last_command), 0,
237 SILC_TASK_PRI_NORMAL);
239 silc_schedule_task_add(server->schedule, sock->sock,
240 silc_server_command_process_timeout,
244 SILC_TASK_PRI_NORMAL);
248 /* Execute for server */
250 if (!(cmd->flags & SILC_CF_REG))
252 else if (silc_server_is_registered(server, sock, ctx, cmd->cmd))
256 /* Allocate Command Context */
258 SilcServerCommandContext silc_server_command_alloc()
260 SilcServerCommandContext ctx = silc_calloc(1, sizeof(*ctx));
265 /* Free's the command context allocated before executing the command */
267 void silc_server_command_free(SilcServerCommandContext ctx)
270 SILC_LOG_DEBUG(("Command context %p refcnt %d->%d", ctx, ctx->users + 1,
272 if (ctx->users < 1) {
274 silc_command_payload_free(ctx->payload);
276 silc_packet_context_free(ctx->packet);
278 silc_socket_free(ctx->sock); /* Decrease reference counter */
283 /* Duplicate Command Context by adding reference counter. The context won't
284 be free'd untill it hits zero. */
286 SilcServerCommandContext
287 silc_server_command_dup(SilcServerCommandContext ctx)
290 SILC_LOG_DEBUG(("Command context %p refcnt %d->%d", ctx, ctx->users - 1,
295 /* Add new pending command to be executed when reply to a command has been
296 received. The `reply_cmd' is the command that will call the `callback'
297 with `context' when reply has been received. It can be SILC_COMMAND_NONE
298 to match any command with the `ident'. If `ident' is non-zero
299 the `callback' will be executed when received reply with command
300 identifier `ident'. If there already exists pending command for the
301 specified command, ident, callback and context this function has no
304 bool silc_server_command_pending(SilcServer server,
305 SilcCommand reply_cmd,
307 SilcCommandCb callback,
310 SilcServerCommandPending *reply;
312 /* Check whether identical pending already exists for same command,
313 ident, callback and callback context. If it does then it would be
314 error to register it again. */
315 silc_dlist_start(server->pending_commands);
316 while ((reply = silc_dlist_get(server->pending_commands)) != SILC_LIST_END) {
317 if (reply->reply_cmd == reply_cmd && reply->ident == ident &&
318 reply->callback == callback && reply->context == context)
322 reply = silc_calloc(1, sizeof(*reply));
323 reply->reply_cmd = reply_cmd;
324 reply->ident = ident;
325 reply->context = context;
326 reply->callback = callback;
327 silc_dlist_add(server->pending_commands, reply);
332 /* Deletes pending command by reply command type. */
334 void silc_server_command_pending_del(SilcServer server,
335 SilcCommand reply_cmd,
338 SilcServerCommandPending *r;
340 silc_dlist_start(server->pending_commands);
341 while ((r = silc_dlist_get(server->pending_commands)) != SILC_LIST_END) {
342 if (r->reply_cmd == reply_cmd && r->ident == ident) {
343 silc_dlist_del(server->pending_commands, r);
349 /* Checks for pending commands and marks callbacks to be called from
350 the command reply function. Returns TRUE if there were pending command. */
352 SilcServerCommandPendingCallbacks
353 silc_server_command_pending_check(SilcServer server,
354 SilcServerCommandReplyContext ctx,
357 uint32 *callbacks_count)
359 SilcServerCommandPending *r;
360 SilcServerCommandPendingCallbacks callbacks = NULL;
363 silc_dlist_start(server->pending_commands);
364 while ((r = silc_dlist_get(server->pending_commands)) != SILC_LIST_END) {
365 if ((r->reply_cmd == command || r->reply_cmd == SILC_COMMAND_NONE)
366 && r->ident == ident) {
367 callbacks = silc_realloc(callbacks, sizeof(*callbacks) * (i + 1));
368 callbacks[i].context = r->context;
369 callbacks[i].callback = r->callback;
375 *callbacks_count = i;
379 /* Sends simple status message as command reply packet */
382 silc_server_command_send_status_reply(SilcServerCommandContext cmd,
384 SilcCommandStatus status)
388 SILC_LOG_DEBUG(("Sending command status %d", status));
391 silc_command_reply_payload_encode_va(command, status,
392 silc_command_get_ident(cmd->payload),
394 silc_server_packet_send(cmd->server, cmd->sock,
395 SILC_PACKET_COMMAND_REPLY, 0,
396 buffer->data, buffer->len, FALSE);
397 silc_buffer_free(buffer);
400 /* Sends command status reply with one extra argument. The argument
401 type must be sent as argument. */
404 silc_server_command_send_status_data(SilcServerCommandContext cmd,
406 SilcCommandStatus status,
408 const unsigned char *arg,
413 SILC_LOG_DEBUG(("Sending command status %d", status));
416 silc_command_reply_payload_encode_va(command, status,
417 silc_command_get_ident(cmd->payload),
418 1, arg_type, arg, arg_len);
419 silc_server_packet_send(cmd->server, cmd->sock,
420 SILC_PACKET_COMMAND_REPLY, 0,
421 buffer->data, buffer->len, FALSE);
422 silc_buffer_free(buffer);
425 /* This function can be called to check whether in the command reply
426 an error occurred. This function has no effect if this is called
427 when the command function was not called as pending command callback.
428 This returns TRUE if error had occurred. */
431 silc_server_command_pending_error_check(SilcServerCommandContext cmd,
432 SilcServerCommandReplyContext cmdr,
435 SilcCommandStatus status;
437 if (!cmd->pending || !cmdr)
440 SILC_GET16_MSB(status, silc_argument_get_arg_type(cmdr->args, 1, NULL));
441 if (status != SILC_STATUS_OK &&
442 status != SILC_STATUS_LIST_START &&
443 status != SILC_STATUS_LIST_ITEM &&
444 status != SILC_STATUS_LIST_END) {
447 /* Send the same command reply payload */
448 silc_command_set_ident(cmdr->payload,
449 silc_command_get_ident(cmd->payload));
450 buffer = silc_command_payload_encode_payload(cmdr->payload);
451 silc_server_packet_send(cmd->server, cmd->sock,
452 SILC_PACKET_COMMAND_REPLY, 0,
453 buffer->data, buffer->len, FALSE);
454 silc_buffer_free(buffer);
461 /******************************************************************************
465 ******************************************************************************/
468 silc_server_command_whois_parse(SilcServerCommandContext cmd,
469 SilcClientID ***client_id,
470 uint32 *client_id_count,
478 uint32 argc = silc_argument_get_arg_num(cmd->args);
481 /* If client ID is in the command it must be used instead of nickname */
482 tmp = silc_argument_get_arg_type(cmd->args, 3, &len);
484 /* No ID, get the nickname@server string and parse it. */
485 tmp = silc_argument_get_arg_type(cmd->args, 1, NULL);
487 silc_parse_userfqdn(tmp, nickname, server_name);
489 silc_server_command_send_status_reply(cmd, command,
490 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
494 /* Command includes ID, we must use that. Also check whether the command
495 has more than one ID set - take them all. */
497 *client_id = silc_calloc(1, sizeof(**client_id));
498 (*client_id)[0] = silc_id_payload_parse_id(tmp, len);
499 if ((*client_id)[0] == NULL) {
500 silc_free(*client_id);
501 silc_server_command_send_status_reply(cmd, command,
502 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
505 *client_id_count = 1;
507 /* Take all ID's from the command packet */
509 for (k = 1, i = 1; i < argc; i++) {
510 tmp = silc_argument_get_arg_type(cmd->args, i + 3, &len);
512 *client_id = silc_realloc(*client_id, sizeof(**client_id) *
513 (*client_id_count + 1));
514 (*client_id)[k] = silc_id_payload_parse_id(tmp, len);
515 if ((*client_id)[k] == NULL) {
516 /* Cleanup all and fail */
517 for (i = 0; i < *client_id_count; i++)
518 silc_free((*client_id)[i]);
519 silc_free(*client_id);
520 silc_server_command_send_status_reply(
522 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
525 (*client_id_count)++;
532 /* Get the max count of reply messages allowed */
533 tmp = silc_argument_get_arg_type(cmd->args, 2, NULL);
542 /* Resolve context used by both WHOIS and IDENTIFY commands */
544 SilcServerEntry router;
546 unsigned char **res_argv;
547 uint32 *res_argv_lens;
548 uint32 *res_argv_types;
550 } *SilcServerResolveContext;
553 silc_server_command_whois_check(SilcServerCommandContext cmd,
554 SilcClientEntry *clients,
555 uint32 clients_count)
557 SilcServer server = cmd->server;
558 SilcClientEntry entry;
559 SilcServerResolveContext resolve = NULL, r = NULL;
560 uint32 resolve_count = 0;
564 for (i = 0; i < clients_count; i++) {
569 if ((entry->nickname && entry->username && entry->userinfo) ||
570 !(entry->data.status & SILC_IDLIST_STATUS_REGISTERED)) {
574 /* If we are normal server, and we've not resolved this client from
575 router and it is global client, we'll check whether it is on some
576 channel. If not then we cannot be sure about its validity, and
577 we'll resolve it from router. */
578 if (cmd->server->server_type != SILC_SERVER || cmd->pending ||
579 entry->connection || silc_hash_table_count(entry->channels))
583 /* We need to resolve this entry since it is not complete */
585 if (!cmd->pending && entry->data.status & SILC_IDLIST_STATUS_RESOLVING) {
586 /* The entry is being resolved (and we are not the resolver) so attach
587 to the command reply and we're done with this one. */
588 silc_server_command_pending(server, SILC_COMMAND_NONE,
589 entry->resolve_cmd_ident,
590 silc_server_command_whois,
591 silc_server_command_dup(cmd));
594 if (entry->data.status & SILC_IDLIST_STATUS_RESOLVING) {
595 /* We've resolved this and it still is not ready. We'll return
596 and are that this will be handled again after it is resolved. */
597 for (i = 0; i < resolve_count; i++) {
598 for (k = 0; k < r->res_argc; k++)
599 silc_free(r->res_argv[k]);
600 silc_free(r->res_argv);
601 silc_free(r->res_argv_lens);
602 silc_free(r->res_argv_types);
607 /* We'll resolve this client */
611 for (k = 0; k < resolve_count; k++) {
612 if (resolve[k].router == entry->router) {
619 resolve = silc_realloc(resolve, sizeof(*resolve) *
620 (resolve_count + 1));
621 r = &resolve[resolve_count];
622 memset(r, 0, sizeof(*r));
623 r->router = entry->router;
624 r->ident = ++server->cmd_ident;
628 r->res_argv = silc_realloc(r->res_argv, sizeof(*r->res_argv) *
630 r->res_argv_lens = silc_realloc(r->res_argv_lens,
631 sizeof(*r->res_argv_lens) *
633 r->res_argv_types = silc_realloc(r->res_argv_types,
634 sizeof(*r->res_argv_types) *
636 idp = silc_id_payload_encode(entry->id, SILC_ID_CLIENT);
637 r->res_argv[r->res_argc] = silc_calloc(idp->len,
638 sizeof(**r->res_argv));
639 memcpy(r->res_argv[r->res_argc], idp->data, idp->len);
640 r->res_argv_lens[r->res_argc] = idp->len;
641 r->res_argv_types[r->res_argc] = r->res_argc + 3;
643 silc_buffer_free(idp);
645 entry->resolve_cmd_ident = r->ident;
646 entry->data.status |= SILC_IDLIST_STATUS_RESOLVING;
647 entry->data.status &= ~SILC_IDLIST_STATUS_RESOLVED;
652 /* Do the resolving */
653 for (i = 0; i < resolve_count; i++) {
658 /* Send WHOIS request. We send WHOIS since we're doing the requesting
659 now anyway so make it a good one. */
660 res_cmd = silc_command_payload_encode(SILC_COMMAND_WHOIS,
661 r->res_argc, r->res_argv,
665 silc_server_packet_send(server, r->router->connection,
666 SILC_PACKET_COMMAND, cmd->packet->flags,
667 res_cmd->data, res_cmd->len, FALSE);
669 /* Reprocess this packet after received reply */
670 silc_server_command_pending(server, SILC_COMMAND_WHOIS,
672 silc_server_command_whois,
673 silc_server_command_dup(cmd));
676 silc_buffer_free(res_cmd);
677 for (k = 0; k < r->res_argc; k++)
678 silc_free(r->res_argv[k]);
679 silc_free(r->res_argv);
680 silc_free(r->res_argv_lens);
681 silc_free(r->res_argv_types);
690 silc_server_command_whois_send_reply(SilcServerCommandContext cmd,
691 SilcClientEntry *clients,
692 uint32 clients_count,
694 const char *nickname,
695 SilcClientID **client_ids)
697 SilcServer server = cmd->server;
699 int i, k, len, valid_count;
700 SilcBuffer packet, idp, channels;
701 SilcClientEntry entry;
702 SilcCommandStatus status;
703 uint16 ident = silc_command_get_ident(cmd->payload);
704 char nh[256], uh[256];
705 unsigned char idle[4], mode[4];
706 unsigned char *fingerprint;
707 SilcSocketConnection hsock;
709 /* Process only valid clients and ignore those that are not registered. */
711 for (i = 0; i < clients_count; i++) {
712 if (clients[i]->data.status & SILC_IDLIST_STATUS_REGISTERED)
719 /* No valid clients found, send error reply */
721 silc_server_command_send_status_data(cmd, SILC_COMMAND_WHOIS,
722 SILC_STATUS_ERR_NO_SUCH_NICK,
723 3, nickname, strlen(nickname));
724 } else if (client_ids && client_ids[0]) {
725 SilcBuffer idp = silc_id_payload_encode(client_ids[0], SILC_ID_CLIENT);
726 silc_server_command_send_status_data(cmd, SILC_COMMAND_WHOIS,
727 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID,
728 2, idp->data, idp->len);
729 silc_buffer_free(idp);
734 /* Start processing found clients. */
736 status = SILC_STATUS_LIST_START;
738 status = SILC_STATUS_OK;
740 for (i = 0, k = 0; i < clients_count; i++) {
746 status = SILC_STATUS_LIST_ITEM;
747 if (valid_count > 1 && k == valid_count - 1)
748 status = SILC_STATUS_LIST_END;
749 if (count && k - 1 == count)
750 status = SILC_STATUS_LIST_END;
752 /* Send WHOIS reply */
753 idp = silc_id_payload_encode(entry->id, SILC_ID_CLIENT);
754 tmp = silc_argument_get_first_arg(cmd->args, NULL);
756 memset(uh, 0, sizeof(uh));
757 memset(nh, 0, sizeof(nh));
758 memset(idle, 0, sizeof(idle));
760 strncat(nh, entry->nickname, strlen(entry->nickname));
761 if (!strchr(entry->nickname, '@')) {
763 if (entry->servername) {
764 strncat(nh, entry->servername, strlen(entry->servername));
766 len = entry->router ? strlen(entry->router->server_name) :
767 strlen(server->server_name);
768 strncat(nh, entry->router ? entry->router->server_name :
769 server->server_name, len);
773 strncat(uh, entry->username, strlen(entry->username));
774 if (!strchr(entry->username, '@')) {
776 hsock = (SilcSocketConnection)entry->connection;
777 len = strlen(hsock->hostname);
778 strncat(uh, hsock->hostname, len);
781 channels = silc_server_get_client_channel_list(server, entry);
783 if (entry->data.fingerprint[0] != 0 && entry->data.fingerprint[1] != 0)
784 fingerprint = entry->data.fingerprint;
788 SILC_PUT32_MSB(entry->mode, mode);
790 if (entry->connection) {
791 SILC_PUT32_MSB((time(NULL) - entry->data.last_receive), idle);
795 silc_command_reply_payload_encode_va(SILC_COMMAND_WHOIS,
797 2, idp->data, idp->len,
801 strlen(entry->userinfo),
802 6, channels ? channels->data : NULL,
803 channels ? channels->len : 0,
807 fingerprint ? 20 : 0);
809 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY,
810 0, packet->data, packet->len, FALSE);
812 silc_buffer_free(packet);
813 silc_buffer_free(idp);
815 silc_buffer_free(channels);
822 silc_server_command_whois_send_router(SilcServerCommandContext cmd)
824 SilcServer server = cmd->server;
828 old_ident = silc_command_get_ident(cmd->payload);
829 silc_command_set_ident(cmd->payload, ++server->cmd_ident);
830 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
832 /* Send WHOIS command to our router */
833 silc_server_packet_send(server, (SilcSocketConnection)
834 server->router->connection,
835 SILC_PACKET_COMMAND, cmd->packet->flags,
836 tmpbuf->data, tmpbuf->len, TRUE);
838 /* Reprocess this packet after received reply from router */
839 silc_server_command_pending(server, SILC_COMMAND_WHOIS,
840 silc_command_get_ident(cmd->payload),
841 silc_server_command_whois,
842 silc_server_command_dup(cmd));
844 silc_command_set_ident(cmd->payload, old_ident);
845 silc_buffer_free(tmpbuf);
849 silc_server_command_whois_process(SilcServerCommandContext cmd)
851 SilcServer server = cmd->server;
852 char *nick = NULL, *server_name = NULL;
854 SilcClientEntry *clients = NULL, entry;
855 SilcClientID **client_id = NULL;
856 uint32 client_id_count = 0, clients_count = 0;
858 bool check_global = FALSE;
860 /* Parse the whois request */
861 if (!silc_server_command_whois_parse(cmd, &client_id, &client_id_count,
862 &nick, &server_name, &count,
866 /* Send the WHOIS request to the router only if it included nickname.
867 Since nicknames can be expanded into many clients we need to send it
868 to router. If the WHOIS included only client ID's we will check them
869 first locally since we just might have them. */
870 if (nick && !client_id_count && cmd->sock->type == SILC_SOCKET_TYPE_CLIENT &&
871 server->server_type == SILC_SERVER && !cmd->pending &&
872 !server->standalone) {
873 silc_server_command_whois_send_router(cmd);
878 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT)
880 else if (server->server_type != SILC_SERVER)
883 /* Get all clients matching that ID or nickname from local list */
884 if (client_id_count) {
885 /* Check all Client ID's received in the command packet */
886 for (i = 0; i < client_id_count; i++) {
887 entry = silc_idlist_find_client_by_id(server->local_list,
888 client_id[i], TRUE, NULL);
889 if (!entry && check_global)
890 entry = silc_idlist_find_client_by_id(server->global_list,
891 client_id[i], TRUE, NULL);
893 clients = silc_realloc(clients, sizeof(*clients) *
894 (clients_count + 1));
895 clients[clients_count++] = entry;
897 /* If we are normal server and did not send the request first to router
898 do it now, since we do not have the Client ID information. */
899 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT &&
900 server->server_type == SILC_SERVER && !cmd->pending &&
901 !server->standalone) {
902 silc_server_command_whois_send_router(cmd);
909 /* Find by nickname */
910 if (!silc_idlist_get_clients_by_hash(server->local_list,
911 nick, server->md5hash,
912 &clients, &clients_count))
913 silc_idlist_get_clients_by_nickname(server->local_list,
915 &clients, &clients_count);
917 if (!silc_idlist_get_clients_by_hash(server->global_list,
918 nick, server->md5hash,
919 &clients, &clients_count))
920 silc_idlist_get_clients_by_nickname(server->global_list,
922 &clients, &clients_count);
927 /* If we are normal server and did not send the request first to router
928 do it now, since we do not have the information. */
929 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT &&
930 server->server_type == SILC_SERVER && !cmd->pending &&
931 !server->standalone) {
932 silc_server_command_whois_send_router(cmd);
937 /* Such client(s) really does not exist in the SILC network. */
938 if (!client_id_count) {
939 silc_server_command_send_status_data(cmd, SILC_COMMAND_WHOIS,
940 SILC_STATUS_ERR_NO_SUCH_NICK,
941 3, nick, strlen(nick));
943 SilcBuffer idp = silc_id_payload_encode(client_id[0], SILC_ID_CLIENT);
944 silc_server_command_send_status_data(cmd, SILC_COMMAND_WHOIS,
945 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID,
946 2, idp->data, idp->len);
947 silc_buffer_free(idp);
952 /* Router always finds the client entry if it exists in the SILC network.
953 However, it might be incomplete entry and does not include all the
954 mandatory fields that WHOIS command reply requires. Check for these and
955 make query from the server who owns the client if some fields are
957 if (!silc_server_command_whois_check(cmd, clients, clients_count)) {
962 /* Send the command reply */
963 silc_server_command_whois_send_reply(cmd, clients, clients_count,
964 count, nick, client_id);
967 if (client_id_count) {
968 for (i = 0; i < client_id_count; i++)
969 silc_free(client_id[i]);
970 silc_free(client_id);
974 silc_free(server_name);
979 /* Server side of command WHOIS. Processes user's query and sends found
980 results as command replies back to the client. */
982 SILC_SERVER_CMD_FUNC(whois)
984 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
987 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_WHOIS, cmd, 1, 3328);
989 ret = silc_server_command_whois_process(cmd);
990 silc_server_command_free(cmd);
993 /******************************************************************************
997 ******************************************************************************/
1000 silc_server_command_whowas_parse(SilcServerCommandContext cmd,
1008 tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
1010 silc_server_command_send_status_reply(cmd, SILC_COMMAND_WHOWAS,
1011 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
1015 /* Get the nickname@server string and parse it. */
1016 silc_parse_userfqdn(tmp, nickname, server_name);
1018 /* Get the max count of reply messages allowed */
1019 tmp = silc_argument_get_arg_type(cmd->args, 2, NULL);
1029 silc_server_command_whowas_check(SilcServerCommandContext cmd,
1030 SilcClientEntry *clients,
1031 uint32 clients_count)
1033 SilcServer server = cmd->server;
1035 SilcClientEntry entry;
1037 for (i = 0; i < clients_count; i++) {
1040 if (!entry->nickname || !entry->username) {
1047 old_ident = silc_command_get_ident(cmd->payload);
1048 silc_command_set_ident(cmd->payload, ++server->cmd_ident);
1049 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
1051 /* Send WHOWAS command */
1052 silc_server_packet_send(server, entry->router->connection,
1053 SILC_PACKET_COMMAND, cmd->packet->flags,
1054 tmpbuf->data, tmpbuf->len, TRUE);
1056 /* Reprocess this packet after received reply */
1057 silc_server_command_pending(server, SILC_COMMAND_WHOWAS,
1058 silc_command_get_ident(cmd->payload),
1059 silc_server_command_whowas,
1060 silc_server_command_dup(cmd));
1061 cmd->pending = TRUE;
1063 silc_command_set_ident(cmd->payload, old_ident);
1065 silc_buffer_free(tmpbuf);
1074 silc_server_command_whowas_send_reply(SilcServerCommandContext cmd,
1075 SilcClientEntry *clients,
1076 uint32 clients_count)
1078 SilcServer server = cmd->server;
1080 int i, count = 0, len;
1081 SilcBuffer packet, idp;
1082 SilcClientEntry entry = NULL;
1083 SilcCommandStatus status;
1084 uint16 ident = silc_command_get_ident(cmd->payload);
1086 char nh[256], uh[256];
1088 status = SILC_STATUS_OK;
1089 if (clients_count > 1)
1090 status = SILC_STATUS_LIST_START;
1092 for (i = 0; i < clients_count; i++) {
1095 /* We will take only clients that are not valid anymore. They are the
1096 ones that are not registered anymore but still have a ID. They
1097 have disconnected us, and thus valid for WHOWAS. */
1098 if (entry->data.status & SILC_IDLIST_STATUS_REGISTERED || !entry->id)
1101 if (count && i - 1 == count)
1106 if (clients_count > 2)
1107 status = SILC_STATUS_LIST_ITEM;
1108 if (clients_count > 1 && i == clients_count - 1)
1109 status = SILC_STATUS_LIST_END;
1111 /* Send WHOWAS reply */
1112 idp = silc_id_payload_encode(entry->id, SILC_ID_CLIENT);
1113 tmp = silc_argument_get_first_arg(cmd->args, NULL);
1114 memset(uh, 0, sizeof(uh));
1115 memset(nh, 0, sizeof(nh));
1117 strncat(nh, entry->nickname, strlen(entry->nickname));
1118 if (!strchr(entry->nickname, '@')) {
1119 strncat(nh, "@", 1);
1120 if (entry->servername) {
1121 strncat(nh, entry->servername, strlen(entry->servername));
1123 len = entry->router ? strlen(entry->router->server_name) :
1124 strlen(server->server_name);
1125 strncat(nh, entry->router ? entry->router->server_name :
1126 server->server_name, len);
1130 strncat(uh, entry->username, strlen(entry->username));
1131 if (!strchr(entry->username, '@')) {
1132 strncat(uh, "@", 1);
1133 strcat(uh, "*private*");
1137 silc_command_reply_payload_encode_va(SILC_COMMAND_WHOWAS,
1139 2, idp->data, idp->len,
1144 strlen(entry->userinfo) : 0);
1145 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY,
1146 0, packet->data, packet->len, FALSE);
1148 silc_buffer_free(packet);
1149 silc_buffer_free(idp);
1152 if (found == FALSE && entry)
1153 silc_server_command_send_status_data(cmd, SILC_COMMAND_WHOWAS,
1154 SILC_STATUS_ERR_NO_SUCH_NICK,
1156 strlen(entry->nickname));
1160 silc_server_command_whowas_process(SilcServerCommandContext cmd)
1162 SilcServer server = cmd->server;
1163 char *nick = NULL, *server_name = NULL;
1165 SilcClientEntry *clients = NULL;
1166 uint32 clients_count = 0;
1168 bool check_global = FALSE;
1170 /* Protocol dictates that we must always send the received WHOWAS request
1171 to our router if we are normal server, so let's do it now unless we
1172 are standalone. We will not send any replies to the client until we
1173 have received reply from the router. */
1174 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT &&
1175 server->server_type == SILC_SERVER && !cmd->pending &&
1176 !server->standalone) {
1180 old_ident = silc_command_get_ident(cmd->payload);
1181 silc_command_set_ident(cmd->payload, ++server->cmd_ident);
1182 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
1184 /* Send WHOWAS command to our router */
1185 silc_server_packet_send(server, (SilcSocketConnection)
1186 server->router->connection,
1187 SILC_PACKET_COMMAND, cmd->packet->flags,
1188 tmpbuf->data, tmpbuf->len, TRUE);
1190 /* Reprocess this packet after received reply from router */
1191 silc_server_command_pending(server, SILC_COMMAND_WHOWAS,
1192 silc_command_get_ident(cmd->payload),
1193 silc_server_command_whowas,
1194 silc_server_command_dup(cmd));
1195 cmd->pending = TRUE;
1197 silc_command_set_ident(cmd->payload, old_ident);
1199 silc_buffer_free(tmpbuf);
1204 /* We are ready to process the command request. Let's search for the
1205 requested client and send reply to the requesting client. */
1207 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT)
1208 check_global = TRUE;
1209 else if (server->server_type != SILC_SERVER)
1210 check_global = TRUE;
1212 /* Parse the whowas request */
1213 if (!silc_server_command_whowas_parse(cmd, &nick, &server_name, &count))
1216 /* Get all clients matching that nickname from local list */
1217 if (!silc_idlist_get_clients_by_nickname(server->local_list,
1219 &clients, &clients_count))
1220 silc_idlist_get_clients_by_hash(server->local_list,
1221 nick, server->md5hash,
1222 &clients, &clients_count);
1224 /* Check global list as well */
1226 if (!silc_idlist_get_clients_by_nickname(server->global_list,
1228 &clients, &clients_count))
1229 silc_idlist_get_clients_by_hash(server->global_list,
1230 nick, server->md5hash,
1231 &clients, &clients_count);
1235 /* Such a client really does not exist in the SILC network. */
1236 silc_server_command_send_status_data(cmd, SILC_COMMAND_WHOWAS,
1237 SILC_STATUS_ERR_NO_SUCH_NICK,
1238 3, nick, strlen(nick));
1242 if (!silc_server_command_whowas_check(cmd, clients, clients_count)) {
1247 /* Send the command reply to the client */
1248 silc_server_command_whowas_send_reply(cmd, clients, clients_count);
1253 silc_free(server_name);
1257 /* Server side of command WHOWAS. */
1259 SILC_SERVER_CMD_FUNC(whowas)
1261 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
1264 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_WHOWAS, cmd, 1, 2);
1266 ret = silc_server_command_whowas_process(cmd);
1267 silc_server_command_free(cmd);
1270 /******************************************************************************
1274 ******************************************************************************/
1277 silc_server_command_identify_send_router(SilcServerCommandContext cmd)
1279 SilcServer server = cmd->server;
1283 old_ident = silc_command_get_ident(cmd->payload);
1284 silc_command_set_ident(cmd->payload, ++server->cmd_ident);
1285 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
1287 /* Send IDENTIFY command to our router */
1288 silc_server_packet_send(server, (SilcSocketConnection)
1289 server->router->connection,
1290 SILC_PACKET_COMMAND, cmd->packet->flags,
1291 tmpbuf->data, tmpbuf->len, TRUE);
1293 /* Reprocess this packet after received reply from router */
1294 silc_server_command_pending(server, SILC_COMMAND_IDENTIFY,
1295 silc_command_get_ident(cmd->payload),
1296 silc_server_command_identify,
1297 silc_server_command_dup(cmd));
1298 cmd->pending = TRUE;
1299 silc_command_set_ident(cmd->payload, old_ident);
1300 silc_buffer_free(tmpbuf);
1304 silc_server_command_identify_parse(SilcServerCommandContext cmd,
1305 SilcClientEntry **clients,
1306 uint32 *clients_count,
1307 SilcServerEntry **servers,
1308 uint32 *servers_count,
1309 SilcChannelEntry **channels,
1310 uint32 *channels_count,
1313 SilcServer server = cmd->server;
1316 uint32 argc = silc_argument_get_arg_num(cmd->args);
1318 bool check_global = FALSE;
1323 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT)
1324 check_global = TRUE;
1325 else if (server->server_type != SILC_SERVER)
1326 check_global = TRUE;
1328 /* If ID Payload is in the command it must be used instead of names */
1329 tmp = silc_argument_get_arg_type(cmd->args, 5, &len);
1331 /* No ID, get the names. */
1333 /* If we are normal server and have not resolved information from
1334 router yet, do so now. */
1335 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT &&
1336 server->server_type == SILC_SERVER && !cmd->pending &&
1337 !server->standalone) {
1338 silc_server_command_identify_send_router(cmd);
1342 /* Try to get nickname@server. */
1343 tmp = silc_argument_get_arg_type(cmd->args, 1, NULL);
1346 char *nick_server = NULL;
1348 silc_parse_userfqdn(tmp, &nick, &nick_server);
1350 if (!silc_idlist_get_clients_by_hash(server->local_list,
1351 nick, server->md5hash,
1352 clients, clients_count))
1353 silc_idlist_get_clients_by_nickname(server->local_list,
1355 clients, clients_count);
1357 if (!silc_idlist_get_clients_by_hash(server->global_list,
1358 nick, server->md5hash,
1359 clients, clients_count))
1360 silc_idlist_get_clients_by_nickname(server->global_list,
1362 clients, clients_count);
1366 silc_free(nick_server);
1369 /* the nickname does not exist, send error reply */
1370 silc_server_command_send_status_data(cmd, SILC_COMMAND_IDENTIFY,
1371 SILC_STATUS_ERR_NO_SUCH_NICK,
1372 3, tmp, strlen(tmp));
1377 /* Try to get server name */
1378 tmp = silc_argument_get_arg_type(cmd->args, 2, NULL);
1380 entry = silc_idlist_find_server_by_name(server->local_list,
1382 if (!entry && check_global)
1383 entry = silc_idlist_find_server_by_name(server->global_list,
1386 *servers = silc_realloc(*servers, sizeof(**servers) *
1387 (*servers_count + 1));
1388 (*servers)[(*servers_count)++] = entry;
1392 /* the server does not exist, send error reply */
1393 silc_server_command_send_status_data(cmd, SILC_COMMAND_IDENTIFY,
1394 SILC_STATUS_ERR_NO_SUCH_SERVER,
1395 3, tmp, strlen(tmp));
1400 /* Try to get channel name */
1401 tmp = silc_argument_get_arg_type(cmd->args, 3, NULL);
1403 entry = silc_idlist_find_channel_by_name(server->local_list,
1405 if (!entry && check_global)
1406 entry = silc_idlist_find_channel_by_name(server->global_list,
1409 *channels = silc_realloc(*channels, sizeof(**channels) *
1410 (*channels_count + 1));
1411 (*channels)[(*channels_count)++] = entry;
1415 /* The channel does not exist, send error reply */
1416 silc_server_command_send_status_data(cmd, SILC_COMMAND_IDENTIFY,
1417 SILC_STATUS_ERR_NO_SUCH_CHANNEL,
1418 3, tmp, strlen(tmp));
1423 if (!(*clients) && !(*servers) && !(*channels)) {
1424 silc_server_command_send_status_reply(cmd, SILC_COMMAND_IDENTIFY,
1425 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
1429 /* Command includes ID, we must use that. Also check whether the command
1430 has more than one ID set - take them all. */
1432 /* Take all ID's from the command packet */
1433 for (i = 0; i < argc; i++) {
1436 tmp = silc_argument_get_arg_type(cmd->args, i + 5, &len);
1440 idp = silc_id_payload_parse(tmp, len);
1442 silc_free(*clients);
1443 silc_free(*servers);
1444 silc_free(*channels);
1445 silc_server_command_send_status_reply(
1446 cmd, SILC_COMMAND_IDENTIFY,
1447 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
1451 id = silc_id_payload_get_id(idp);
1453 switch (silc_id_payload_get_type(idp)) {
1455 case SILC_ID_CLIENT:
1456 entry = (void *)silc_idlist_find_client_by_id(server->local_list,
1458 if (!entry && check_global)
1459 entry = (void *)silc_idlist_find_client_by_id(server->global_list,
1462 *clients = silc_realloc(*clients, sizeof(**clients) *
1463 (*clients_count + 1));
1464 (*clients)[(*clients_count)++] = (SilcClientEntry)entry;
1466 /* If we are normal server and have not resolved information from
1467 router yet, do so now. */
1468 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT &&
1469 server->server_type == SILC_SERVER && !cmd->pending &&
1470 !server->standalone) {
1471 silc_server_command_identify_send_router(cmd);
1472 silc_free(*clients);
1473 silc_free(*servers);
1474 silc_free(*channels);
1477 silc_server_command_send_status_data(
1478 cmd, SILC_COMMAND_IDENTIFY,
1479 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID,
1487 case SILC_ID_SERVER:
1488 entry = (void *)silc_idlist_find_server_by_id(server->local_list,
1490 if (!entry && check_global)
1491 entry = (void *)silc_idlist_find_server_by_id(server->global_list,
1494 *servers = silc_realloc(*servers, sizeof(**servers) *
1495 (*servers_count + 1));
1496 (*servers)[(*servers_count)++] = (SilcServerEntry)entry;
1498 /* If we are normal server and have not resolved information from
1499 router yet, do so now. */
1500 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT &&
1501 server->server_type == SILC_SERVER && !cmd->pending &&
1502 !server->standalone) {
1503 silc_server_command_identify_send_router(cmd);
1504 silc_free(*clients);
1505 silc_free(*servers);
1506 silc_free(*channels);
1509 silc_server_command_send_status_data(
1510 cmd, SILC_COMMAND_IDENTIFY,
1511 SILC_STATUS_ERR_NO_SUCH_SERVER_ID,
1518 case SILC_ID_CHANNEL:
1519 entry = (void *)silc_idlist_find_channel_by_id(server->local_list,
1521 if (!entry && check_global)
1522 entry = (void *)silc_idlist_find_channel_by_id(server->global_list,
1525 *channels = silc_realloc(*channels, sizeof(**channels) *
1526 (*channels_count + 1));
1527 (*channels)[(*channels_count)++] = (SilcChannelEntry)entry;
1529 /* If we are normal server and have not resolved information from
1530 router yet, do so now. */
1531 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT &&
1532 server->server_type == SILC_SERVER && !cmd->pending &&
1533 !server->standalone) {
1534 silc_server_command_identify_send_router(cmd);
1535 silc_free(*clients);
1536 silc_free(*servers);
1537 silc_free(*channels);
1540 silc_server_command_send_status_data(
1541 cmd, SILC_COMMAND_IDENTIFY,
1542 SILC_STATUS_ERR_NO_SUCH_CHANNEL_ID,
1555 silc_free(*clients);
1556 silc_free(*servers);
1557 silc_free(*channels);
1561 /* Get the max count of reply messages allowed */
1562 tmp = silc_argument_get_arg_type(cmd->args, 4, NULL);
1571 /* Checks that all mandatory fields in client entry are present. If not
1572 then send WHOIS request to the server who owns the client. We use
1573 WHOIS because we want to get as much information as possible at once. */
1576 silc_server_command_identify_check_client(SilcServerCommandContext cmd,
1577 SilcClientEntry *clients,
1578 uint32 clients_count)
1580 SilcServer server = cmd->server;
1581 SilcClientEntry entry;
1582 SilcServerResolveContext resolve = NULL, r = NULL;
1583 uint32 resolve_count = 0;
1587 for (i = 0; i < clients_count; i++) {
1592 if (entry->nickname ||
1593 !(entry->data.status & SILC_IDLIST_STATUS_REGISTERED)) {
1597 /* If we are normal server, and we've not resolved this client from
1598 router and it is global client, we'll check whether it is on some
1599 channel. If not then we cannot be sure about its validity, and
1600 we'll resolve it from router. */
1601 if (cmd->server->server_type != SILC_SERVER || cmd->pending ||
1602 entry->connection || silc_hash_table_count(entry->channels))
1606 /* We need to resolve this entry since it is not complete */
1608 if (!cmd->pending && entry->data.status & SILC_IDLIST_STATUS_RESOLVING) {
1609 /* The entry is being resolved (and we are not the resolver) so attach
1610 to the command reply and we're done with this one. */
1611 silc_server_command_pending(server, SILC_COMMAND_NONE,
1612 entry->resolve_cmd_ident,
1613 silc_server_command_identify,
1614 silc_server_command_dup(cmd));
1617 if (entry->data.status & SILC_IDLIST_STATUS_RESOLVING) {
1618 /* We've resolved this and it still is not ready. We'll return
1619 and are that this will be handled again after it is resolved. */
1620 for (i = 0; i < resolve_count; i++) {
1621 for (k = 0; k < r->res_argc; k++)
1622 silc_free(r->res_argv[k]);
1623 silc_free(r->res_argv);
1624 silc_free(r->res_argv_lens);
1625 silc_free(r->res_argv_types);
1630 /* We'll resolve this client */
1634 for (k = 0; k < resolve_count; k++) {
1635 if (resolve[k].router == entry->router) {
1642 resolve = silc_realloc(resolve, sizeof(*resolve) *
1643 (resolve_count + 1));
1644 r = &resolve[resolve_count];
1645 memset(r, 0, sizeof(*r));
1646 r->router = entry->router;
1647 r->ident = ++server->cmd_ident;
1651 r->res_argv = silc_realloc(r->res_argv, sizeof(*r->res_argv) *
1653 r->res_argv_lens = silc_realloc(r->res_argv_lens,
1654 sizeof(*r->res_argv_lens) *
1656 r->res_argv_types = silc_realloc(r->res_argv_types,
1657 sizeof(*r->res_argv_types) *
1659 idp = silc_id_payload_encode(entry->id, SILC_ID_CLIENT);
1660 r->res_argv[r->res_argc] = silc_calloc(idp->len,
1661 sizeof(**r->res_argv));
1662 memcpy(r->res_argv[r->res_argc], idp->data, idp->len);
1663 r->res_argv_lens[r->res_argc] = idp->len;
1664 r->res_argv_types[r->res_argc] = r->res_argc + 3;
1666 silc_buffer_free(idp);
1668 entry->resolve_cmd_ident = r->ident;
1669 entry->data.status |= SILC_IDLIST_STATUS_RESOLVING;
1670 entry->data.status &= ~SILC_IDLIST_STATUS_RESOLVED;
1675 /* Do the resolving */
1676 for (i = 0; i < resolve_count; i++) {
1681 /* Send WHOIS request. We send WHOIS since we're doing the requesting
1682 now anyway so make it a good one. */
1683 res_cmd = silc_command_payload_encode(SILC_COMMAND_WHOIS,
1684 r->res_argc, r->res_argv,
1688 silc_server_packet_send(server, r->router->connection,
1689 SILC_PACKET_COMMAND, cmd->packet->flags,
1690 res_cmd->data, res_cmd->len, FALSE);
1692 /* Reprocess this packet after received reply */
1693 silc_server_command_pending(server, SILC_COMMAND_WHOIS,
1695 silc_server_command_identify,
1696 silc_server_command_dup(cmd));
1697 cmd->pending = TRUE;
1699 silc_buffer_free(res_cmd);
1700 for (k = 0; k < r->res_argc; k++)
1701 silc_free(r->res_argv[k]);
1702 silc_free(r->res_argv);
1703 silc_free(r->res_argv_lens);
1704 silc_free(r->res_argv_types);
1713 silc_server_command_identify_send_reply(SilcServerCommandContext cmd,
1714 SilcClientEntry *clients,
1715 uint32 clients_count,
1716 SilcServerEntry *servers,
1717 uint32 servers_count,
1718 SilcChannelEntry *channels,
1719 uint32 channels_count,
1722 SilcServer server = cmd->server;
1723 int i, k, len, valid_count;
1724 SilcBuffer packet, idp;
1725 SilcCommandStatus status;
1726 uint16 ident = silc_command_get_ident(cmd->payload);
1727 char nh[256], uh[256];
1728 SilcSocketConnection hsock;
1730 status = SILC_STATUS_OK;
1733 SilcClientEntry entry;
1735 /* Process only valid entries. */
1737 for (i = 0; i < clients_count; i++) {
1738 if (clients[i]->data.status & SILC_IDLIST_STATUS_REGISTERED)
1745 /* No valid entries found at all, just send error */
1748 tmp = silc_argument_get_arg_type(cmd->args, 1, NULL);
1750 silc_server_command_send_status_data(cmd, SILC_COMMAND_IDENTIFY,
1751 SILC_STATUS_ERR_NO_SUCH_NICK,
1752 3, tmp, strlen(tmp));
1754 tmp = silc_argument_get_arg_type(cmd->args, 5, (uint32 *)&len);
1755 silc_server_command_send_status_data(cmd, SILC_COMMAND_IDENTIFY,
1756 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID,
1762 /* Process all valid client entries and send command replies */
1764 if (valid_count > 1)
1765 status = SILC_STATUS_LIST_START;
1767 for (i = 0, k = 0; i < clients_count; i++) {
1773 status = SILC_STATUS_LIST_ITEM;
1774 if (valid_count > 1 && k == valid_count - 1
1775 && !servers_count && !channels_count)
1776 status = SILC_STATUS_LIST_END;
1777 if (count && k - 1 == count)
1778 status = SILC_STATUS_LIST_END;
1779 if (count && k - 1 > count)
1782 /* Send IDENTIFY reply */
1784 idp = silc_id_payload_encode(entry->id, SILC_ID_CLIENT);
1785 memset(uh, 0, sizeof(uh));
1786 memset(nh, 0, sizeof(nh));
1787 strncat(nh, entry->nickname, strlen(entry->nickname));
1788 if (!strchr(entry->nickname, '@')) {
1789 strncat(nh, "@", 1);
1790 if (entry->servername) {
1791 strncat(nh, entry->servername, strlen(entry->servername));
1793 len = entry->router ? strlen(entry->router->server_name) :
1794 strlen(server->server_name);
1795 strncat(nh, entry->router ? entry->router->server_name :
1796 server->server_name, len);
1800 if (!entry->username) {
1801 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_IDENTIFY,
1803 2, idp->data, idp->len,
1806 strncat(uh, entry->username, strlen(entry->username));
1807 if (!strchr(entry->username, '@')) {
1808 strncat(uh, "@", 1);
1809 hsock = (SilcSocketConnection)entry->connection;
1810 len = strlen(hsock->hostname);
1811 strncat(uh, hsock->hostname, len);
1814 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_IDENTIFY,
1816 2, idp->data, idp->len,
1821 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY,
1822 0, packet->data, packet->len, FALSE);
1824 silc_buffer_free(packet);
1825 silc_buffer_free(idp);
1832 SilcServerEntry entry;
1834 if (status == SILC_STATUS_OK && servers_count > 1)
1835 status = SILC_STATUS_LIST_START;
1837 for (i = 0, k = 0; i < servers_count; i++) {
1841 status = SILC_STATUS_LIST_ITEM;
1842 if (servers_count > 1 && k == servers_count - 1 && !channels_count)
1843 status = SILC_STATUS_LIST_END;
1844 if (count && k - 1 == count)
1845 status = SILC_STATUS_LIST_END;
1846 if (count && k - 1 > count)
1849 /* Send IDENTIFY reply */
1850 idp = silc_id_payload_encode(entry->id, SILC_ID_SERVER);
1852 silc_command_reply_payload_encode_va(SILC_COMMAND_IDENTIFY,
1854 2, idp->data, idp->len,
1855 3, entry->server_name,
1856 entry->server_name ?
1857 strlen(entry->server_name) : 0);
1858 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY,
1859 0, packet->data, packet->len, FALSE);
1861 silc_buffer_free(packet);
1862 silc_buffer_free(idp);
1869 SilcChannelEntry entry;
1871 if (status == SILC_STATUS_OK && channels_count > 1)
1872 status = SILC_STATUS_LIST_START;
1874 for (i = 0, k = 0; i < channels_count; i++) {
1875 entry = channels[i];
1878 status = SILC_STATUS_LIST_ITEM;
1879 if (channels_count > 1 && k == channels_count - 1)
1880 status = SILC_STATUS_LIST_END;
1881 if (count && k - 1 == count)
1882 status = SILC_STATUS_LIST_END;
1883 if (count && k - 1 > count)
1886 /* Send IDENTIFY reply */
1887 idp = silc_id_payload_encode(entry->id, SILC_ID_CHANNEL);
1889 silc_command_reply_payload_encode_va(SILC_COMMAND_IDENTIFY,
1891 2, idp->data, idp->len,
1892 3, entry->channel_name,
1893 entry->channel_name ?
1894 strlen(entry->channel_name): 0);
1895 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY,
1896 0, packet->data, packet->len, FALSE);
1898 silc_buffer_free(packet);
1899 silc_buffer_free(idp);
1907 silc_server_command_identify_process(SilcServerCommandContext cmd)
1911 SilcClientEntry *clients = NULL;
1912 SilcServerEntry *servers = NULL;
1913 SilcChannelEntry *channels = NULL;
1914 uint32 clients_count = 0, servers_count = 0, channels_count = 0;
1916 /* Parse the IDENTIFY request */
1917 ret = silc_server_command_identify_parse(cmd,
1918 &clients, &clients_count,
1919 &servers, &servers_count,
1920 &channels, &channels_count,
1926 /* Check that all mandatory fields are present and request those data
1927 from the server who owns the client if necessary. */
1928 if (clients && !silc_server_command_identify_check_client(cmd, clients,
1934 /* Send the command reply to the client */
1935 silc_server_command_identify_send_reply(cmd,
1936 clients, clients_count,
1937 servers, servers_count,
1938 channels, channels_count,
1944 silc_free(channels);
1948 SILC_SERVER_CMD_FUNC(identify)
1950 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
1953 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_IDENTIFY, cmd, 1, 3328);
1955 ret = silc_server_command_identify_process(cmd);
1956 silc_server_command_free(cmd);
1959 /* Server side of command NICK. Sets nickname for user. Setting
1960 nickname causes generation of a new client ID for the client. The
1961 new client ID is sent to the client after changing the nickname. */
1963 SILC_SERVER_CMD_FUNC(nick)
1965 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
1966 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
1967 SilcServer server = cmd->server;
1968 SilcBuffer packet, nidp, oidp = NULL;
1969 SilcClientID *new_id;
1972 uint16 ident = silc_command_get_ident(cmd->payload);
1975 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
1978 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_NICK, cmd, 1, 1);
1980 /* Check nickname */
1981 nick = silc_argument_get_arg_type(cmd->args, 1, &nick_len);
1984 if (silc_server_name_bad_chars(nick, nick_len) == TRUE) {
1985 silc_server_command_send_status_reply(cmd, SILC_COMMAND_NICK,
1986 SILC_STATUS_ERR_BAD_NICKNAME);
1990 /* Check for same nickname */
1991 if (!strcmp(client->nickname, nick)) {
1992 nidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
1996 /* Create new Client ID */
1997 while (!silc_id_create_client_id(cmd->server, cmd->server->id,
1999 cmd->server->md5hash, nick,
2002 snprintf(&nick[strlen(nick) - 1], 1, "%d", nickfail);
2005 /* Send notify about nickname change to our router. We send the new
2006 ID and ask to replace it with the old one. If we are router the
2007 packet is broadcasted. Send NICK_CHANGE notify. */
2008 if (!server->standalone)
2009 silc_server_send_notify_nick_change(server, server->router->connection,
2010 server->server_type == SILC_SERVER ?
2011 FALSE : TRUE, client->id,
2014 oidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
2016 /* Remove old cache entry */
2017 silc_idcache_del_by_context(server->local_list->clients, client);
2020 silc_free(client->id);
2022 /* Save the nickname as this client is our local client */
2023 silc_free(client->nickname);
2025 client->nickname = strdup(nick);
2026 client->id = new_id;
2028 /* Update client cache */
2029 silc_idcache_add(server->local_list->clients, client->nickname,
2030 client->id, (void *)client, 0, NULL);
2032 nidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
2034 /* Send NICK_CHANGE notify to the client's channels */
2035 silc_server_send_notify_on_channels(server, NULL, client,
2036 SILC_NOTIFY_TYPE_NICK_CHANGE, 2,
2037 oidp->data, oidp->len,
2038 nidp->data, nidp->len);
2041 /* Send the new Client ID as reply command back to client */
2042 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_NICK,
2043 SILC_STATUS_OK, ident, 1,
2044 2, nidp->data, nidp->len);
2045 silc_server_packet_send(cmd->server, cmd->sock, SILC_PACKET_COMMAND_REPLY,
2046 0, packet->data, packet->len, FALSE);
2048 silc_buffer_free(packet);
2049 silc_buffer_free(nidp);
2051 silc_buffer_free(oidp);
2054 silc_server_command_free(cmd);
2057 /* Sends the LIST command reply */
2060 silc_server_command_list_send_reply(SilcServerCommandContext cmd,
2061 SilcChannelEntry *lch,
2063 SilcChannelEntry *gch,
2067 SilcBuffer packet, idp;
2068 SilcChannelEntry entry;
2069 SilcCommandStatus status;
2070 uint16 ident = silc_command_get_ident(cmd->payload);
2072 unsigned char usercount[4];
2074 int valid_lcount = 0, valid_rcount = 0;
2076 for (i = 0; i < lch_count; i++) {
2077 if (lch[i]->mode & SILC_CHANNEL_MODE_SECRET)
2082 for (i = 0; i < gch_count; i++) {
2083 if (gch[i]->mode & SILC_CHANNEL_MODE_SECRET)
2089 status = SILC_STATUS_OK;
2090 if ((lch_count + gch_count) > 1)
2091 status = SILC_STATUS_LIST_START;
2094 for (i = 0, k = 0; i < lch_count; i++) {
2100 status = SILC_STATUS_LIST_ITEM;
2101 if (valid_lcount > 1 && k == valid_lcount - 1 && !valid_rcount)
2102 status = SILC_STATUS_LIST_END;
2104 idp = silc_id_payload_encode(entry->id, SILC_ID_CHANNEL);
2106 if (entry->mode & SILC_CHANNEL_MODE_PRIVATE) {
2107 topic = "*private*";
2108 memset(usercount, 0, sizeof(usercount));
2110 topic = entry->topic;
2111 users = silc_hash_table_count(entry->user_list);
2112 SILC_PUT32_MSB(users, usercount);
2115 /* Send the reply */
2117 silc_command_reply_payload_encode_va(SILC_COMMAND_LIST,
2119 2, idp->data, idp->len,
2120 3, entry->channel_name,
2121 strlen(entry->channel_name),
2122 4, topic, topic ? strlen(topic) : 0,
2124 silc_server_packet_send(cmd->server, cmd->sock,
2125 SILC_PACKET_COMMAND_REPLY, 0, packet->data,
2126 packet->len, FALSE);
2127 silc_buffer_free(packet);
2128 silc_buffer_free(idp);
2133 for (i = 0, k = 0; i < gch_count; i++) {
2139 status = SILC_STATUS_LIST_ITEM;
2140 if (valid_rcount > 1 && k == valid_rcount - 1)
2141 status = SILC_STATUS_LIST_END;
2143 idp = silc_id_payload_encode(entry->id, SILC_ID_CHANNEL);
2145 if (entry->mode & SILC_CHANNEL_MODE_PRIVATE) {
2146 topic = "*private*";
2147 memset(usercount, 0, sizeof(usercount));
2149 topic = entry->topic;
2150 users = silc_hash_table_count(entry->user_list);
2151 SILC_PUT32_MSB(users, usercount);
2154 /* Send the reply */
2156 silc_command_reply_payload_encode_va(SILC_COMMAND_LIST,
2158 2, idp->data, idp->len,
2159 3, entry->channel_name,
2160 strlen(entry->channel_name),
2161 4, topic, topic ? strlen(topic) : 0,
2163 silc_server_packet_send(cmd->server, cmd->sock,
2164 SILC_PACKET_COMMAND_REPLY, 0, packet->data,
2165 packet->len, FALSE);
2166 silc_buffer_free(packet);
2167 silc_buffer_free(idp);
2172 /* Server side of LIST command. This lists the channel of the requested
2173 server. Secret channels are not listed. */
2175 SILC_SERVER_CMD_FUNC(list)
2177 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2178 SilcServer server = cmd->server;
2179 SilcChannelID *channel_id = NULL;
2182 SilcChannelEntry *lchannels = NULL, *gchannels = NULL;
2183 uint32 lch_count = 0, gch_count = 0;
2185 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_LIST, cmd, 0, 1);
2187 /* If we are normal server, send the command to router, since we
2188 want to know all channels in the network. */
2189 if (!cmd->pending && server->server_type == SILC_SERVER &&
2190 !server->standalone) {
2194 old_ident = silc_command_get_ident(cmd->payload);
2195 silc_command_set_ident(cmd->payload, ++server->cmd_ident);
2196 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
2197 silc_server_packet_send(server, server->router->connection,
2198 SILC_PACKET_COMMAND, cmd->packet->flags,
2199 tmpbuf->data, tmpbuf->len, TRUE);
2201 /* Reprocess this packet after received reply from router */
2202 silc_server_command_pending(server, SILC_COMMAND_LIST,
2203 silc_command_get_ident(cmd->payload),
2204 silc_server_command_list,
2205 silc_server_command_dup(cmd));
2206 cmd->pending = TRUE;
2207 silc_command_set_ident(cmd->payload, old_ident);
2208 silc_buffer_free(tmpbuf);
2212 /* Get Channel ID */
2213 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
2215 channel_id = silc_id_payload_parse_id(tmp, tmp_len);
2217 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LIST,
2218 SILC_STATUS_ERR_NO_CHANNEL_ID);
2223 /* Get the channels from local list */
2224 lchannels = silc_idlist_get_channels(server->local_list, channel_id,
2227 /* Get the channels from global list */
2228 gchannels = silc_idlist_get_channels(server->global_list, channel_id,
2231 /* Send the reply */
2232 silc_server_command_list_send_reply(cmd, lchannels, lch_count,
2233 gchannels, gch_count);
2235 silc_free(lchannels);
2236 silc_free(gchannels);
2239 silc_server_command_free(cmd);
2242 /* Server side of TOPIC command. Sets topic for channel and/or returns
2243 current topic to client. */
2245 SILC_SERVER_CMD_FUNC(topic)
2247 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2248 SilcServer server = cmd->server;
2249 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
2250 SilcChannelID *channel_id;
2251 SilcChannelEntry channel;
2252 SilcChannelClientEntry chl;
2253 SilcBuffer packet, idp;
2255 uint32 argc, tmp_len;
2256 uint16 ident = silc_command_get_ident(cmd->payload);
2258 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_TOPIC, cmd, 1, 2);
2260 argc = silc_argument_get_arg_num(cmd->args);
2262 /* Get Channel ID */
2263 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
2265 silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
2266 SILC_STATUS_ERR_NO_CHANNEL_ID);
2269 channel_id = silc_id_payload_parse_id(tmp, tmp_len);
2271 silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
2272 SILC_STATUS_ERR_NO_CHANNEL_ID);
2276 /* Check whether the channel exists */
2277 channel = silc_idlist_find_channel_by_id(server->local_list,
2280 channel = silc_idlist_find_channel_by_id(server->global_list,
2283 silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
2284 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
2291 tmp = silc_argument_get_arg_type(cmd->args, 2, NULL);
2293 silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
2294 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
2298 if (strlen(tmp) > 256) {
2299 silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
2300 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
2304 /* See whether the client is on channel and has rights to change topic */
2305 if (!silc_hash_table_find(channel->user_list, client, NULL,
2307 silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
2308 SILC_STATUS_ERR_NOT_ON_CHANNEL);
2312 if (chl->mode == SILC_CHANNEL_UMODE_NONE) {
2313 if (channel->mode & SILC_CHANNEL_MODE_TOPIC) {
2314 silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
2315 SILC_STATUS_ERR_NO_CHANNEL_PRIV);
2320 /* Set the topic for channel */
2321 silc_free(channel->topic);
2322 channel->topic = strdup(tmp);
2324 /* Send TOPIC_SET notify type to the network */
2325 if (!server->standalone)
2326 silc_server_send_notify_topic_set(server, server->router->connection,
2327 server->server_type == SILC_ROUTER ?
2328 TRUE : FALSE, channel,
2329 client->id, SILC_ID_CLIENT,
2332 idp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
2334 /* Send notify about topic change to all clients on the channel */
2335 silc_server_send_notify_to_channel(server, NULL, channel, TRUE,
2336 SILC_NOTIFY_TYPE_TOPIC_SET, 2,
2337 idp->data, idp->len,
2338 channel->topic, strlen(channel->topic));
2339 silc_buffer_free(idp);
2342 /* Send the topic to client as reply packet */
2343 idp = silc_id_payload_encode(channel_id, SILC_ID_CHANNEL);
2344 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_TOPIC,
2345 SILC_STATUS_OK, ident, 2,
2346 2, idp->data, idp->len,
2349 strlen(channel->topic) : 0);
2350 silc_server_packet_send(cmd->server, cmd->sock, SILC_PACKET_COMMAND_REPLY,
2351 0, packet->data, packet->len, FALSE);
2353 silc_buffer_free(packet);
2354 silc_buffer_free(idp);
2355 silc_free(channel_id);
2358 silc_server_command_free(cmd);
2361 /* Server side of INVITE command. Invites some client to join some channel.
2362 This command is also used to manage the invite list of the channel. */
2364 SILC_SERVER_CMD_FUNC(invite)
2366 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2367 SilcServer server = cmd->server;
2368 SilcSocketConnection sock = cmd->sock, dest_sock;
2369 SilcChannelClientEntry chl;
2370 SilcClientEntry sender, dest;
2371 SilcClientID *dest_id = NULL;
2372 SilcChannelEntry channel;
2373 SilcChannelID *channel_id = NULL;
2374 SilcIDListData idata;
2375 SilcBuffer idp, idp2, packet;
2376 unsigned char *tmp, *add, *del;
2378 uint16 ident = silc_command_get_ident(cmd->payload);
2380 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_INVITE, cmd, 1, 4);
2382 /* Get Channel ID */
2383 tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
2385 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
2386 SILC_STATUS_ERR_NO_CHANNEL_ID);
2389 channel_id = silc_id_payload_parse_id(tmp, len);
2391 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
2392 SILC_STATUS_ERR_NO_CHANNEL_ID);
2396 /* Get the channel entry */
2397 channel = silc_idlist_find_channel_by_id(server->local_list,
2400 channel = silc_idlist_find_channel_by_id(server->global_list,
2403 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
2404 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
2409 /* Check whether the sender of this command is on the channel. */
2410 sender = (SilcClientEntry)sock->user_data;
2411 if (!silc_server_client_on_channel(sender, channel)) {
2412 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
2413 SILC_STATUS_ERR_NOT_ON_CHANNEL);
2417 /* Check whether the channel is invite-only channel. If yes then the
2418 sender of this command must be at least channel operator. */
2419 if (channel->mode & SILC_CHANNEL_MODE_INVITE) {
2420 silc_hash_table_find(channel->user_list, sender, NULL, (void *)&chl);
2421 if (chl->mode == SILC_CHANNEL_UMODE_NONE) {
2422 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
2423 SILC_STATUS_ERR_NO_CHANNEL_PRIV);
2428 /* Get destination client ID */
2429 tmp = silc_argument_get_arg_type(cmd->args, 2, &len);
2434 dest_id = silc_id_payload_parse_id(tmp, len);
2436 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
2437 SILC_STATUS_ERR_NO_CLIENT_ID);
2441 /* Get the client entry */
2442 dest = silc_server_get_client_resolve(server, dest_id, &resolve);
2444 if (server->server_type != SILC_SERVER || !resolve) {
2445 silc_server_command_send_status_reply(
2446 cmd, SILC_COMMAND_INVITE,
2447 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID);
2451 /* The client info is being resolved. Reprocess this packet after
2452 receiving the reply to the query. */
2453 silc_server_command_pending(server, SILC_COMMAND_WHOIS,
2455 silc_server_command_invite,
2456 silc_server_command_dup(cmd));
2457 cmd->pending = TRUE;
2458 silc_free(channel_id);
2463 /* Check whether the requested client is already on the channel. */
2464 if (silc_server_client_on_channel(dest, channel)) {
2465 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
2466 SILC_STATUS_ERR_USER_ON_CHANNEL);
2470 /* Get route to the client */
2471 dest_sock = silc_server_get_client_route(server, NULL, 0, dest_id, &idata);
2473 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
2474 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID);
2478 memset(invite, 0, sizeof(invite));
2479 strncat(invite, dest->nickname, strlen(dest->nickname));
2480 strncat(invite, "!", 1);
2481 strncat(invite, dest->username, strlen(dest->username));
2482 if (!strchr(dest->username, '@')) {
2483 strncat(invite, "@", 1);
2484 strncat(invite, cmd->sock->hostname, strlen(cmd->sock->hostname));
2487 len = strlen(invite);
2488 if (!channel->invite_list)
2489 channel->invite_list = silc_calloc(len + 2,
2490 sizeof(*channel->invite_list));
2492 channel->invite_list = silc_realloc(channel->invite_list,
2493 sizeof(*channel->invite_list) *
2495 strlen(channel->invite_list) + 2));
2496 strncat(channel->invite_list, invite, len);
2497 strncat(channel->invite_list, ",", 1);
2499 /* Send notify to the client that is invited to the channel */
2500 idp = silc_id_payload_encode(channel_id, SILC_ID_CHANNEL);
2501 idp2 = silc_id_payload_encode(sender->id, SILC_ID_CLIENT);
2502 silc_server_send_notify_dest(server, dest_sock, FALSE, dest_id,
2504 SILC_NOTIFY_TYPE_INVITE, 3,
2505 idp->data, idp->len,
2506 channel->channel_name,
2507 strlen(channel->channel_name),
2508 idp2->data, idp2->len);
2509 silc_buffer_free(idp);
2510 silc_buffer_free(idp2);
2513 /* Add the client to the invite list of the channel */
2514 add = silc_argument_get_arg_type(cmd->args, 3, &len);
2516 if (!channel->invite_list)
2517 channel->invite_list = silc_calloc(len + 2,
2518 sizeof(*channel->invite_list));
2520 channel->invite_list = silc_realloc(channel->invite_list,
2521 sizeof(*channel->invite_list) *
2523 strlen(channel->invite_list) + 2));
2524 if (add[len - 1] == ',')
2525 add[len - 1] = '\0';
2527 strncat(channel->invite_list, add, len);
2528 strncat(channel->invite_list, ",", 1);
2531 /* Get the invite to be removed and remove it from the list */
2532 del = silc_argument_get_arg_type(cmd->args, 4, &len);
2533 if (del && channel->invite_list) {
2534 char *start, *end, *n;
2536 if (!strncmp(channel->invite_list, del,
2537 strlen(channel->invite_list) - 1)) {
2538 silc_free(channel->invite_list);
2539 channel->invite_list = NULL;
2541 start = strstr(channel->invite_list, del);
2542 if (start && strlen(start) >= len) {
2544 n = silc_calloc(strlen(channel->invite_list) - len, sizeof(*n));
2545 strncat(n, channel->invite_list, start - channel->invite_list);
2546 strncat(n, end + 1, ((channel->invite_list +
2547 strlen(channel->invite_list)) - end) - 1);
2548 silc_free(channel->invite_list);
2549 channel->invite_list = n;
2554 /* Send notify to the primary router */
2555 if (!server->standalone)
2556 silc_server_send_notify_invite(server, server->router->connection,
2557 server->server_type == SILC_ROUTER ?
2558 TRUE : FALSE, channel,
2559 sender->id, add, del);
2561 /* Send command reply */
2562 tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
2566 silc_command_reply_payload_encode_va(SILC_COMMAND_INVITE,
2567 SILC_STATUS_OK, ident, 2,
2569 3, channel->invite_list,
2570 channel->invite_list ?
2571 strlen(channel->invite_list) : 0);
2574 silc_command_reply_payload_encode_va(SILC_COMMAND_INVITE,
2575 SILC_STATUS_OK, ident, 1,
2577 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
2578 packet->data, packet->len, FALSE);
2579 silc_buffer_free(packet);
2583 silc_free(channel_id);
2584 silc_server_command_free(cmd);
2589 SilcSocketConnection sock;
2593 /* Quits connection to client. This gets called if client won't
2594 close the connection even when it has issued QUIT command. */
2596 SILC_TASK_CALLBACK(silc_server_command_quit_cb)
2598 QuitInternal q = (QuitInternal)context;
2600 /* Free all client specific data, such as client entry and entires
2601 on channels this client may be on. */
2602 silc_server_free_client_data(q->server, q->sock, q->sock->user_data,
2604 q->sock->user_data = NULL;
2606 /* Close the connection on our side */
2607 silc_server_close_connection(q->server, q->sock);
2609 silc_free(q->signoff);
2613 /* Quits SILC session. This is the normal way to disconnect client. */
2615 SILC_SERVER_CMD_FUNC(quit)
2617 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2618 SilcServer server = cmd->server;
2619 SilcSocketConnection sock = cmd->sock;
2621 unsigned char *tmp = NULL;
2624 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_QUIT, cmd, 0, 1);
2626 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
2629 /* Get destination ID */
2630 tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
2634 q = silc_calloc(1, sizeof(*q));
2637 q->signoff = tmp ? strdup(tmp) : NULL;
2639 /* We quit the connection with little timeout */
2640 silc_schedule_task_add(server->schedule, sock->sock,
2641 silc_server_command_quit_cb, (void *)q,
2642 0, 200000, SILC_TASK_TIMEOUT, SILC_TASK_PRI_LOW);
2645 silc_server_command_free(cmd);
2648 /* Server side of command KILL. This command is used by router operator
2649 to remove an client from the SILC Network temporarily. */
2651 SILC_SERVER_CMD_FUNC(kill)
2653 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2654 SilcServer server = cmd->server;
2655 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
2656 SilcClientEntry remote_client;
2657 SilcClientID *client_id;
2658 unsigned char *tmp, *comment;
2659 uint32 tmp_len, tmp_len2;
2661 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_KILL, cmd, 1, 2);
2663 if (!client || cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
2666 /* KILL command works only on router */
2667 if (server->server_type != SILC_ROUTER) {
2668 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
2669 SILC_STATUS_ERR_NO_ROUTER_PRIV);
2673 /* Check whether client has the permissions. */
2674 if (!(client->mode & SILC_UMODE_ROUTER_OPERATOR)) {
2675 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
2676 SILC_STATUS_ERR_NO_ROUTER_PRIV);
2680 /* Get the client ID */
2681 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
2683 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
2684 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
2687 client_id = silc_id_payload_parse_id(tmp, tmp_len);
2689 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
2690 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID);
2694 /* Get the client entry */
2695 remote_client = silc_idlist_find_client_by_id(server->local_list,
2696 client_id, TRUE, NULL);
2697 if (!remote_client) {
2698 remote_client = silc_idlist_find_client_by_id(server->global_list,
2699 client_id, TRUE, NULL);
2700 if (!remote_client) {
2701 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
2702 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID);
2708 comment = silc_argument_get_arg_type(cmd->args, 2, &tmp_len2);
2712 /* Send reply to the sender */
2713 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
2716 /* Send the KILL notify packets. First send it to the channel, then
2717 to our primary router and then directly to the client who is being
2718 killed right now. */
2720 /* Send KILLED notify to the channels. It is not sent to the client
2721 as it will be sent differently destined directly to the client and not
2723 silc_server_send_notify_on_channels(server, remote_client,
2724 remote_client, SILC_NOTIFY_TYPE_KILLED,
2727 comment, comment ? tmp_len2 : 0);
2729 /* Send KILLED notify to primary route */
2730 if (!server->standalone)
2731 silc_server_send_notify_killed(server, server->router->connection, TRUE,
2732 remote_client->id, comment);
2734 /* Send KILLED notify to the client directly */
2735 silc_server_send_notify_killed(server, remote_client->connection ?
2736 remote_client->connection :
2737 remote_client->router->connection, FALSE,
2738 remote_client->id, comment);
2740 /* Remove the client from all channels. This generates new keys to the
2741 channels as well. */
2742 silc_server_remove_from_channels(server, NULL, remote_client, FALSE,
2745 /* Remove the client entry, If it is locally connected then we will also
2746 disconnect the client here */
2747 if (remote_client->connection) {
2748 /* Remove locally conneted client */
2749 SilcSocketConnection sock = remote_client->connection;
2750 silc_server_free_client_data(server, sock, remote_client, FALSE, NULL);
2751 silc_server_close_connection(server, sock);
2753 /* Remove remote client */
2754 if (!silc_idlist_del_client(server->global_list, remote_client))
2755 silc_idlist_del_client(server->local_list, remote_client);
2759 silc_server_command_free(cmd);
2762 /* Server side of command INFO. This sends information about us to
2763 the client. If client requested specific server we will send the
2764 command to that server. */
2766 SILC_SERVER_CMD_FUNC(info)
2768 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2769 SilcServer server = cmd->server;
2770 SilcBuffer packet, idp;
2773 char *dest_server, *server_info = NULL, *server_name;
2774 uint16 ident = silc_command_get_ident(cmd->payload);
2775 SilcServerEntry entry = NULL;
2776 SilcServerID *server_id = NULL;
2778 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_INFO, cmd, 0, 2);
2780 /* Get server name */
2781 dest_server = silc_argument_get_arg_type(cmd->args, 1, NULL);
2784 tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
2786 server_id = silc_id_payload_parse_id(tmp, tmp_len);
2788 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INFO,
2789 SILC_STATUS_ERR_NO_SERVER_ID);
2795 /* Check whether we have this server cached */
2796 entry = silc_idlist_find_server_by_id(server->local_list,
2797 server_id, TRUE, NULL);
2799 entry = silc_idlist_find_server_by_id(server->global_list,
2800 server_id, TRUE, NULL);
2801 if (!entry && server->server_type != SILC_SERVER) {
2802 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INFO,
2803 SILC_STATUS_ERR_NO_SUCH_SERVER);
2809 /* Some buggy servers has sent request to router about themselves. */
2810 if (server->server_type != SILC_SERVER && cmd->sock->user_data == entry)
2813 if ((!dest_server && !server_id && !entry) || (entry &&
2814 entry == server->id_entry) ||
2815 (dest_server && !cmd->pending &&
2816 !strncasecmp(dest_server, server->server_name, strlen(dest_server)))) {
2817 /* Send our reply */
2818 char info_string[256];
2820 memset(info_string, 0, sizeof(info_string));
2821 snprintf(info_string, sizeof(info_string),
2822 "location: %s server: %s admin: %s <%s>",
2823 server->config->admin_info->location,
2824 server->config->admin_info->server_type,
2825 server->config->admin_info->admin_name,
2826 server->config->admin_info->admin_email);
2828 server_info = info_string;
2829 entry = server->id_entry;
2831 /* Check whether we have this server cached */
2832 if (!entry && dest_server) {
2833 entry = silc_idlist_find_server_by_name(server->global_list,
2834 dest_server, TRUE, NULL);
2836 entry = silc_idlist_find_server_by_name(server->local_list,
2837 dest_server, TRUE, NULL);
2841 if (!cmd->pending &&
2842 server->server_type != SILC_SERVER && entry && !entry->server_info) {
2843 /* Send to the server */
2847 old_ident = silc_command_get_ident(cmd->payload);
2848 silc_command_set_ident(cmd->payload, ++server->cmd_ident);
2849 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
2851 silc_server_packet_send(server, entry->connection,
2852 SILC_PACKET_COMMAND, cmd->packet->flags,
2853 tmpbuf->data, tmpbuf->len, TRUE);
2855 /* Reprocess this packet after received reply from router */
2856 silc_server_command_pending(server, SILC_COMMAND_INFO,
2857 silc_command_get_ident(cmd->payload),
2858 silc_server_command_info,
2859 silc_server_command_dup(cmd));
2860 cmd->pending = TRUE;
2861 silc_command_set_ident(cmd->payload, old_ident);
2862 silc_buffer_free(tmpbuf);
2866 if (!entry && !cmd->pending && !server->standalone) {
2867 /* Send to the primary router */
2871 old_ident = silc_command_get_ident(cmd->payload);
2872 silc_command_set_ident(cmd->payload, ++server->cmd_ident);
2873 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
2875 silc_server_packet_send(server, server->router->connection,
2876 SILC_PACKET_COMMAND, cmd->packet->flags,
2877 tmpbuf->data, tmpbuf->len, TRUE);
2879 /* Reprocess this packet after received reply from router */
2880 silc_server_command_pending(server, SILC_COMMAND_INFO,
2881 silc_command_get_ident(cmd->payload),
2882 silc_server_command_info,
2883 silc_server_command_dup(cmd));
2884 cmd->pending = TRUE;
2885 silc_command_set_ident(cmd->payload, old_ident);
2886 silc_buffer_free(tmpbuf);
2891 silc_free(server_id);
2894 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INFO,
2895 SILC_STATUS_ERR_NO_SUCH_SERVER);
2899 idp = silc_id_payload_encode(entry->id, SILC_ID_SERVER);
2901 server_info = entry->server_info;
2902 server_name = entry->server_name;
2904 /* Send the reply */
2905 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_INFO,
2906 SILC_STATUS_OK, ident, 3,
2907 2, idp->data, idp->len,
2909 strlen(server_name),
2912 strlen(server_info) : 0);
2913 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
2914 packet->data, packet->len, FALSE);
2916 silc_buffer_free(packet);
2917 silc_buffer_free(idp);
2920 silc_server_command_free(cmd);
2923 /* Server side of command PING. This just replies to the ping. */
2925 SILC_SERVER_CMD_FUNC(ping)
2927 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2928 SilcServer server = cmd->server;
2933 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_INFO, cmd, 1, 2);
2936 tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
2938 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PING,
2939 SILC_STATUS_ERR_NO_SERVER_ID);
2942 id = silc_id_str2id(tmp, len, SILC_ID_SERVER);
2946 if (SILC_ID_SERVER_COMPARE(id, server->id)) {
2947 /* Send our reply */
2948 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PING,
2951 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PING,
2952 SILC_STATUS_ERR_NO_SUCH_SERVER);
2959 silc_server_command_free(cmd);
2962 /* Internal routine to join channel. The channel sent to this function
2963 has been either created or resolved from ID lists. This joins the sent
2964 client to the channel. */
2966 static void silc_server_command_join_channel(SilcServer server,
2967 SilcServerCommandContext cmd,
2968 SilcChannelEntry channel,
2969 SilcClientID *client_id,
2973 const unsigned char *auth,
2976 SilcSocketConnection sock = cmd->sock;
2978 uint32 tmp_len, user_count;
2979 unsigned char *passphrase = NULL, mode[4], tmp2[4], tmp3[4];
2980 SilcClientEntry client;
2981 SilcChannelClientEntry chl;
2982 SilcBuffer reply, chidp, clidp, keyp = NULL, user_list, mode_list;
2983 uint16 ident = silc_command_get_ident(cmd->payload);
2984 char check[512], check2[512];
2985 bool founder = FALSE;
2988 SILC_LOG_DEBUG(("Start"));
2993 /* Get the client entry */
2994 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT) {
2995 client = (SilcClientEntry)sock->user_data;
2997 client = silc_server_get_client_resolve(server, client_id, &resolve);
3003 silc_server_command_send_status_reply(
3004 cmd, SILC_COMMAND_JOIN,
3005 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3009 /* The client info is being resolved. Reprocess this packet after
3010 receiving the reply to the query. */
3011 silc_server_command_pending(server, SILC_COMMAND_WHOIS,
3013 silc_server_command_join,
3014 silc_server_command_dup(cmd));
3015 cmd->pending = TRUE;
3019 cmd->pending = FALSE;
3023 * Check founder auth payload if provided. If client can gain founder
3024 * privileges it can override various conditions on joining the channel,
3025 * and can have directly the founder mode set on the channel.
3027 if (auth && auth_len && channel->mode & SILC_CHANNEL_MODE_FOUNDER_AUTH) {
3028 SilcIDListData idata = (SilcIDListData)client;
3030 if (channel->founder_key && idata->public_key &&
3031 silc_pkcs_public_key_compare(channel->founder_key,
3032 idata->public_key)) {
3033 void *auth_data = (channel->founder_method == SILC_AUTH_PASSWORD ?
3034 (void *)channel->founder_passwd :
3035 (void *)channel->founder_key);
3036 uint32 auth_data_len = (channel->founder_method == SILC_AUTH_PASSWORD ?
3037 channel->founder_passwd_len : 0);
3039 /* Check whether the client is to become founder */
3040 if (silc_auth_verify_data(auth, auth_len, channel->founder_method,
3041 auth_data, auth_data_len,
3042 idata->hash, client->id, SILC_ID_CLIENT)) {
3043 umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
3050 * Check channel modes
3054 memset(check, 0, sizeof(check));
3055 memset(check2, 0, sizeof(check2));
3056 strncat(check, client->nickname, strlen(client->nickname));
3057 strncat(check, "!", 1);
3058 strncat(check, client->username, strlen(client->username));
3059 if (!strchr(client->username, '@')) {
3060 strncat(check, "@", 1);
3061 strncat(check, cmd->sock->hostname, strlen(cmd->sock->hostname));
3064 strncat(check2, client->nickname, strlen(client->nickname));
3065 if (!strchr(client->nickname, '@')) {
3066 strncat(check2, "@", 1);
3067 strncat(check2, server->server_name, strlen(server->server_name));
3069 strncat(check2, "!", 1);
3070 strncat(check2, client->username, strlen(client->username));
3071 if (!strchr(client->username, '@')) {
3072 strncat(check2, "@", 1);
3073 strncat(check2, cmd->sock->hostname, strlen(cmd->sock->hostname));
3076 /* Check invite list if channel is invite-only channel */
3077 if (channel->mode & SILC_CHANNEL_MODE_INVITE) {
3078 if (!channel->invite_list ||
3079 (!silc_string_match(channel->invite_list, check) &&
3080 !silc_string_match(channel->invite_list, check2))) {
3081 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
3082 SILC_STATUS_ERR_NOT_INVITED);
3087 /* Check ban list if it exists. If the client's nickname, server,
3088 username and/or hostname is in the ban list the access to the
3089 channel is denied. */
3090 if (channel->ban_list) {
3091 if (silc_string_match(channel->ban_list, check) ||
3092 silc_string_match(channel->ban_list, check2)) {
3093 silc_server_command_send_status_reply(
3094 cmd, SILC_COMMAND_JOIN,
3095 SILC_STATUS_ERR_BANNED_FROM_CHANNEL);
3100 /* Check user count limit if set. */
3101 if (channel->mode & SILC_CHANNEL_MODE_ULIMIT) {
3102 if (silc_hash_table_count(channel->user_list) + 1 >
3103 channel->user_limit) {
3104 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
3105 SILC_STATUS_ERR_CHANNEL_IS_FULL);
3111 /* Check the channel passphrase if set. */
3112 if (channel->mode & SILC_CHANNEL_MODE_PASSPHRASE) {
3113 /* Get passphrase */
3114 tmp = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
3116 passphrase = silc_calloc(tmp_len, sizeof(*passphrase));
3117 memcpy(passphrase, tmp, tmp_len);
3120 if (!passphrase || !channel->passphrase ||
3121 memcmp(passphrase, channel->passphrase, strlen(channel->passphrase))) {
3122 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
3123 SILC_STATUS_ERR_BAD_PASSWORD);
3129 * Client is allowed to join to the channel. Make it happen.
3132 /* Check whether the client already is on the channel */
3133 if (silc_server_client_on_channel(client, channel)) {
3134 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
3135 SILC_STATUS_ERR_USER_ON_CHANNEL);
3139 /* Generate new channel key as protocol dictates */
3141 if (!silc_server_create_channel_key(server, channel, 0))
3144 /* Send the channel key. This is broadcasted to the channel but is not
3145 sent to the client who is joining to the channel. */
3146 if (!(channel->mode & SILC_CHANNEL_MODE_PRIVKEY))
3147 silc_server_send_channel_key(server, NULL, channel,
3148 server->server_type == SILC_ROUTER ?
3149 FALSE : !server->standalone);
3152 /* Join the client to the channel by adding it to channel's user list.
3153 Add also the channel to client entry's channels list for fast cross-
3155 chl = silc_calloc(1, sizeof(*chl));
3157 chl->client = client;
3158 chl->channel = channel;
3159 silc_hash_table_add(channel->user_list, client, chl);
3160 silc_hash_table_add(client->channels, channel, chl);
3162 /* Get users on the channel */
3163 silc_server_get_users_on_channel(server, channel, &user_list, &mode_list,
3166 /* Encode Client ID Payload of the original client who wants to join */
3167 clidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
3169 /* Encode command reply packet */
3170 chidp = silc_id_payload_encode(channel->id, SILC_ID_CHANNEL);
3171 SILC_PUT32_MSB(channel->mode, mode);
3172 SILC_PUT32_MSB(created, tmp2);
3173 SILC_PUT32_MSB(user_count, tmp3);
3175 if (!(channel->mode & SILC_CHANNEL_MODE_PRIVKEY)) {
3176 tmp = silc_id_id2str(channel->id, SILC_ID_CHANNEL);
3177 keyp = silc_channel_key_payload_encode(SILC_ID_CHANNEL_LEN, tmp,
3178 strlen(channel->channel_key->
3180 channel->channel_key->cipher->name,
3181 channel->key_len / 8, channel->key);
3186 silc_command_reply_payload_encode_va(SILC_COMMAND_JOIN,
3187 SILC_STATUS_OK, ident, 13,
3188 2, channel->channel_name,
3189 strlen(channel->channel_name),
3190 3, chidp->data, chidp->len,
3191 4, clidp->data, clidp->len,
3194 7, keyp ? keyp->data : NULL,
3195 keyp ? keyp->len : 0,
3196 8, channel->ban_list,
3198 strlen(channel->ban_list) : 0,
3199 9, channel->invite_list,
3200 channel->invite_list ?
3201 strlen(channel->invite_list) : 0,
3204 strlen(channel->topic) : 0,
3205 11, silc_hmac_get_name(channel->hmac),
3206 strlen(silc_hmac_get_name(channel->
3209 13, user_list->data, user_list->len,
3210 14, mode_list->data,
3213 /* Send command reply */
3214 silc_server_packet_send(server, sock, SILC_PACKET_COMMAND_REPLY, 0,
3215 reply->data, reply->len, FALSE);
3217 /* Send JOIN notify to locally connected clients on the channel. If
3218 we are normal server then router will send or have sent JOIN notify
3219 already. However since we've added the client already to our channel
3220 we'll ignore it (in packet_receive.c) so we must send it here. If
3221 we are router then this will send it to local clients and local
3223 silc_server_send_notify_to_channel(server, NULL, channel, FALSE,
3224 SILC_NOTIFY_TYPE_JOIN, 2,
3225 clidp->data, clidp->len,
3226 chidp->data, chidp->len);
3228 if (!cmd->pending) {
3229 /* Send JOIN notify packet to our primary router */
3230 if (!server->standalone)
3231 silc_server_send_notify_join(server, server->router->connection,
3232 server->server_type == SILC_ROUTER ?
3233 TRUE : FALSE, channel, client->id);
3236 /* Distribute the channel key to all backup routers. */
3237 silc_server_backup_send(server, NULL, SILC_PACKET_CHANNEL_KEY, 0,
3238 keyp->data, keyp->len, FALSE, TRUE);
3240 /* If client became founder by providing correct founder auth data
3241 notify the mode change to the channel. */
3243 SILC_PUT32_MSB(chl->mode, mode);
3244 silc_server_send_notify_to_channel(server, NULL, channel, FALSE,
3245 SILC_NOTIFY_TYPE_CUMODE_CHANGE, 3,
3246 clidp->data, clidp->len,
3247 mode, 4, clidp->data, clidp->len);
3249 /* Set CUMODE notify type to network */
3250 if (!server->standalone)
3251 silc_server_send_notify_cumode(server, server->router->connection,
3252 server->server_type == SILC_ROUTER ?
3253 TRUE : FALSE, channel,
3254 chl->mode, client->id, SILC_ID_CLIENT,
3259 silc_buffer_free(reply);
3260 silc_buffer_free(clidp);
3261 silc_buffer_free(chidp);
3262 silc_buffer_free(keyp);
3263 silc_buffer_free(user_list);
3264 silc_buffer_free(mode_list);
3267 silc_free(passphrase);
3270 /* Server side of command JOIN. Joins client into requested channel. If
3271 the channel does not exist it will be created. */
3273 SILC_SERVER_CMD_FUNC(join)
3275 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
3276 SilcServer server = cmd->server;
3277 unsigned char *auth;
3278 uint32 tmp_len, auth_len;
3279 char *tmp, *channel_name = NULL, *cipher, *hmac;
3280 SilcChannelEntry channel;
3282 bool created = FALSE, create_key = TRUE;
3283 SilcClientID *client_id;
3285 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_JOIN, cmd, 2, 6);
3287 /* Get channel name */
3288 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
3290 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
3291 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3297 channel_name[255] = '\0';
3299 if (silc_server_name_bad_chars(channel_name, tmp_len) == TRUE) {
3300 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
3301 SILC_STATUS_ERR_BAD_CHANNEL);
3305 /* Get Client ID of the client who is joining to the channel */
3306 tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
3308 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
3309 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3312 client_id = silc_id_payload_parse_id(tmp, tmp_len);
3314 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
3315 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3319 /* Get cipher, hmac name and auth payload */
3320 cipher = silc_argument_get_arg_type(cmd->args, 4, NULL);
3321 hmac = silc_argument_get_arg_type(cmd->args, 5, NULL);
3322 auth = silc_argument_get_arg_type(cmd->args, 6, &auth_len);
3324 /* See if the channel exists */
3325 channel = silc_idlist_find_channel_by_name(server->local_list,
3326 channel_name, NULL);
3328 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT) {
3329 SilcClientEntry entry = (SilcClientEntry)cmd->sock->user_data;
3330 client_id = silc_id_dup(entry->id, SILC_ID_CLIENT);
3332 if (!channel || channel->disabled) {
3333 /* Channel not found */
3335 /* If we are standalone server we don't have a router, we just create
3336 the channel by ourselves. */
3337 if (server->standalone) {
3338 channel = silc_server_create_new_channel(server, server->id, cipher,
3339 hmac, channel_name, TRUE);
3341 silc_server_command_send_status_reply(
3342 cmd, SILC_COMMAND_JOIN,
3343 SILC_STATUS_ERR_UNKNOWN_ALGORITHM);
3347 umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
3353 /* The channel does not exist on our server. If we are normal server
3354 we will send JOIN command to our router which will handle the
3355 joining procedure (either creates the channel if it doesn't exist
3356 or joins the client to it). */
3357 if (server->server_type != SILC_ROUTER) {
3361 /* If this is pending command callback then we've resolved
3362 it and it didn't work, return since we've notified the
3363 client already in the command reply callback. */
3367 old_ident = silc_command_get_ident(cmd->payload);
3368 silc_command_set_ident(cmd->payload, ++server->cmd_ident);
3369 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
3371 /* Send JOIN command to our router */
3372 silc_server_packet_send(server, (SilcSocketConnection)
3373 server->router->connection,
3374 SILC_PACKET_COMMAND, cmd->packet->flags,
3375 tmpbuf->data, tmpbuf->len, TRUE);
3377 /* Reprocess this packet after received reply from router */
3378 silc_server_command_pending(server, SILC_COMMAND_JOIN,
3379 silc_command_get_ident(cmd->payload),
3380 silc_server_command_join,
3381 silc_server_command_dup(cmd));
3382 cmd->pending = TRUE;
3386 /* We are router and the channel does not seem exist so we will check
3387 our global list as well for the channel. */
3388 channel = silc_idlist_find_channel_by_name(server->global_list,
3389 channel_name, NULL);
3391 /* Channel really does not exist, create it */
3392 channel = silc_server_create_new_channel(server, server->id, cipher,
3393 hmac, channel_name, TRUE);
3395 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
3396 SILC_STATUS_ERR_UNKNOWN_ALGORITHM);
3400 umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
3408 /* Channel not found */
3410 /* If the command came from router and we are normal server then
3411 something went wrong with the joining as the channel was not found.
3412 We can't do anything else but ignore this. */
3413 if (cmd->sock->type == SILC_SOCKET_TYPE_ROUTER ||
3414 server->server_type != SILC_ROUTER)
3417 /* We are router and the channel does not seem exist so we will check
3418 our global list as well for the channel. */
3419 channel = silc_idlist_find_channel_by_name(server->global_list,
3420 channel_name, NULL);
3422 /* Channel really does not exist, create it */
3423 channel = silc_server_create_new_channel(server, server->id, cipher,
3424 hmac, channel_name, TRUE);
3426 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
3427 SILC_STATUS_ERR_UNKNOWN_ALGORITHM);
3431 umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
3438 /* Check whether the channel was created by our router */
3439 if (cmd->pending && context2) {
3440 SilcServerCommandReplyContext reply =
3441 (SilcServerCommandReplyContext)context2;
3443 if (silc_command_get(reply->payload) == SILC_COMMAND_JOIN) {
3444 tmp = silc_argument_get_arg_type(reply->args, 6, NULL);
3445 SILC_GET32_MSB(created, tmp);
3446 create_key = FALSE; /* Router returned the key already */
3449 if (silc_command_get(reply->payload) == SILC_COMMAND_WHOIS &&
3450 !silc_hash_table_count(channel->user_list))
3454 /* If the channel does not have global users and is also empty the client
3455 will be the channel founder and operator. */
3456 if (!channel->global_users && !silc_hash_table_count(channel->user_list))
3457 umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
3459 /* Join to the channel */
3460 silc_server_command_join_channel(server, cmd, channel, client_id,
3461 created, create_key, umode,
3464 silc_free(client_id);
3467 silc_server_command_free(cmd);
3470 /* Server side of command MOTD. Sends server's current "message of the
3471 day" to the client. */
3473 SILC_SERVER_CMD_FUNC(motd)
3475 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
3476 SilcServer server = cmd->server;
3477 SilcBuffer packet, idp;
3478 char *motd, *dest_server;
3480 uint16 ident = silc_command_get_ident(cmd->payload);
3482 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_MOTD, cmd, 1, 1);
3484 /* Get server name */
3485 dest_server = silc_argument_get_arg_type(cmd->args, 1, NULL);
3487 silc_server_command_send_status_reply(cmd, SILC_COMMAND_MOTD,
3488 SILC_STATUS_ERR_NO_SUCH_SERVER);
3492 if (!strncasecmp(dest_server, server->server_name, strlen(dest_server))) {
3495 idp = silc_id_payload_encode(server->id_entry->id, SILC_ID_SERVER);
3497 if (server->config && server->config->motd &&
3498 server->config->motd->motd_file) {
3500 motd = silc_file_readfile(server->config->motd->motd_file, &motd_len);
3505 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_MOTD,
3506 SILC_STATUS_OK, ident, 2,
3511 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_MOTD,
3512 SILC_STATUS_OK, ident, 1,
3516 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
3517 packet->data, packet->len, FALSE);
3518 silc_buffer_free(packet);
3519 silc_buffer_free(idp);
3521 SilcServerEntry entry;
3523 /* Check whether we have this server cached */
3524 entry = silc_idlist_find_server_by_name(server->global_list,
3525 dest_server, TRUE, NULL);
3527 entry = silc_idlist_find_server_by_name(server->local_list,
3528 dest_server, TRUE, NULL);
3531 if (server->server_type != SILC_SERVER && !cmd->pending &&
3532 entry && !entry->motd) {
3533 /* Send to the server */
3537 old_ident = silc_command_get_ident(cmd->payload);
3538 silc_command_set_ident(cmd->payload, ++server->cmd_ident);
3539 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
3541 silc_server_packet_send(server, entry->connection,
3542 SILC_PACKET_COMMAND, cmd->packet->flags,
3543 tmpbuf->data, tmpbuf->len, TRUE);
3545 /* Reprocess this packet after received reply from router */
3546 silc_server_command_pending(server, SILC_COMMAND_MOTD,
3547 silc_command_get_ident(cmd->payload),
3548 silc_server_command_motd,
3549 silc_server_command_dup(cmd));
3550 cmd->pending = TRUE;
3551 silc_command_set_ident(cmd->payload, old_ident);
3552 silc_buffer_free(tmpbuf);
3556 if (!entry && !cmd->pending && !server->standalone) {
3557 /* Send to the primary router */
3561 old_ident = silc_command_get_ident(cmd->payload);
3562 silc_command_set_ident(cmd->payload, ++server->cmd_ident);
3563 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
3565 silc_server_packet_send(server, server->router->connection,
3566 SILC_PACKET_COMMAND, cmd->packet->flags,
3567 tmpbuf->data, tmpbuf->len, TRUE);
3569 /* Reprocess this packet after received reply from router */
3570 silc_server_command_pending(server, SILC_COMMAND_MOTD,
3571 silc_command_get_ident(cmd->payload),
3572 silc_server_command_motd,
3573 silc_server_command_dup(cmd));
3574 cmd->pending = TRUE;
3575 silc_command_set_ident(cmd->payload, old_ident);
3576 silc_buffer_free(tmpbuf);
3581 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INFO,
3582 SILC_STATUS_ERR_NO_SUCH_SERVER);
3586 idp = silc_id_payload_encode(server->id_entry->id, SILC_ID_SERVER);
3587 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_MOTD,
3588 SILC_STATUS_OK, ident, 2,
3592 strlen(entry->motd) : 0);
3593 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
3594 packet->data, packet->len, FALSE);
3595 silc_buffer_free(packet);
3596 silc_buffer_free(idp);
3600 silc_server_command_free(cmd);
3603 /* Server side of command UMODE. Client can use this command to set/unset
3604 user mode. Client actually cannot set itself to be as server/router
3605 operator so this can be used only to unset the modes. */
3607 SILC_SERVER_CMD_FUNC(umode)
3609 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
3610 SilcServer server = cmd->server;
3611 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
3613 unsigned char *tmp_mask;
3615 uint16 ident = silc_command_get_ident(cmd->payload);
3617 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
3620 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_UMODE, cmd, 2, 2);
3622 /* Get the client's mode mask */
3623 tmp_mask = silc_argument_get_arg_type(cmd->args, 2, NULL);
3625 silc_server_command_send_status_reply(cmd, SILC_COMMAND_UMODE,
3626 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3629 SILC_GET32_MSB(mask, tmp_mask);
3635 if (mask & SILC_UMODE_SERVER_OPERATOR) {
3636 if (!(client->mode & SILC_UMODE_SERVER_OPERATOR)) {
3637 /* Cannot operator mode */
3638 silc_server_command_send_status_reply(cmd, SILC_COMMAND_UMODE,
3639 SILC_STATUS_ERR_PERM_DENIED);
3643 if (client->mode & SILC_UMODE_SERVER_OPERATOR)
3644 /* Remove the server operator rights */
3645 client->mode &= ~SILC_UMODE_SERVER_OPERATOR;
3648 if (mask & SILC_UMODE_ROUTER_OPERATOR) {
3649 if (!(client->mode & SILC_UMODE_ROUTER_OPERATOR)) {
3650 /* Cannot operator mode */
3651 silc_server_command_send_status_reply(cmd, SILC_COMMAND_UMODE,
3652 SILC_STATUS_ERR_PERM_DENIED);
3656 if (client->mode & SILC_UMODE_ROUTER_OPERATOR)
3657 /* Remove the router operator rights */
3658 client->mode &= ~SILC_UMODE_ROUTER_OPERATOR;
3661 if (mask & SILC_UMODE_GONE) {
3662 client->mode |= SILC_UMODE_GONE;
3664 if (client->mode & SILC_UMODE_GONE)
3665 /* Remove the gone status */
3666 client->mode &= ~SILC_UMODE_GONE;
3669 /* Send UMODE change to primary router */
3670 if (!server->standalone)
3671 silc_server_send_notify_umode(server, server->router->connection, TRUE,
3672 client->id, client->mode);
3674 /* Send command reply to sender */
3675 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_UMODE,
3676 SILC_STATUS_OK, ident, 1,
3678 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
3679 packet->data, packet->len, FALSE);
3680 silc_buffer_free(packet);
3683 silc_server_command_free(cmd);
3686 /* Checks that client has rights to add or remove channel modes. If any
3687 of the checks fails FALSE is returned. */
3689 int silc_server_check_cmode_rights(SilcChannelEntry channel,
3690 SilcChannelClientEntry client,
3693 int is_op = client->mode & SILC_CHANNEL_UMODE_CHANOP;
3694 int is_fo = client->mode & SILC_CHANNEL_UMODE_CHANFO;
3696 /* Check whether has rights to change anything */
3697 if (!is_op && !is_fo)
3700 /* Check whether has rights to change everything */
3704 /* We know that client is channel operator, check that they are not
3705 changing anything that requires channel founder rights. Rest of the
3706 modes are available automatically for channel operator. */
3708 if (mode & SILC_CHANNEL_MODE_PRIVKEY) {
3709 if (!(channel->mode & SILC_CHANNEL_MODE_PRIVKEY))
3710 if (is_op && !is_fo)
3713 if (channel->mode & SILC_CHANNEL_MODE_PRIVKEY) {
3714 if (is_op && !is_fo)
3719 if (mode & SILC_CHANNEL_MODE_PASSPHRASE) {
3720 if (!(channel->mode & SILC_CHANNEL_MODE_PASSPHRASE))
3721 if (is_op && !is_fo)
3724 if (channel->mode & SILC_CHANNEL_MODE_PASSPHRASE) {
3725 if (is_op && !is_fo)
3730 if (mode & SILC_CHANNEL_MODE_CIPHER) {
3731 if (!(channel->mode & SILC_CHANNEL_MODE_CIPHER))
3732 if (is_op && !is_fo)
3735 if (channel->mode & SILC_CHANNEL_MODE_CIPHER) {
3736 if (is_op && !is_fo)
3741 if (mode & SILC_CHANNEL_MODE_FOUNDER_AUTH) {
3742 if (!(channel->mode & SILC_CHANNEL_MODE_FOUNDER_AUTH))
3743 if (is_op && !is_fo)
3746 if (channel->mode & SILC_CHANNEL_MODE_FOUNDER_AUTH) {
3747 if (is_op && !is_fo)
3755 /* Server side command of CMODE. Changes channel mode */
3757 SILC_SERVER_CMD_FUNC(cmode)
3759 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
3760 SilcServer server = cmd->server;
3761 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
3762 SilcIDListData idata = (SilcIDListData)client;
3763 SilcChannelID *channel_id;
3764 SilcChannelEntry channel;
3765 SilcChannelClientEntry chl;
3766 SilcBuffer packet, cidp;
3767 unsigned char *tmp, *tmp_id, *tmp_mask;
3768 char *cipher = NULL, *hmac = NULL, *passphrase = NULL;
3769 uint32 mode_mask, tmp_len, tmp_len2;
3770 uint16 ident = silc_command_get_ident(cmd->payload);
3772 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_CMODE, cmd, 2, 7);
3774 /* Get Channel ID */
3775 tmp_id = silc_argument_get_arg_type(cmd->args, 1, &tmp_len2);
3777 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3778 SILC_STATUS_ERR_NO_CHANNEL_ID);
3781 channel_id = silc_id_payload_parse_id(tmp_id, tmp_len2);
3783 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3784 SILC_STATUS_ERR_NO_CHANNEL_ID);
3788 /* Get the channel mode mask */
3789 tmp_mask = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
3791 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3792 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3795 SILC_GET32_MSB(mode_mask, tmp_mask);
3797 /* Get channel entry */
3798 channel = silc_idlist_find_channel_by_id(server->local_list,
3801 channel = silc_idlist_find_channel_by_id(server->global_list,
3804 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3805 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
3810 /* Check whether this client is on the channel */
3811 if (!silc_server_client_on_channel(client, channel)) {
3812 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3813 SILC_STATUS_ERR_NOT_ON_CHANNEL);
3817 /* Get entry to the channel user list */
3818 silc_hash_table_find(channel->user_list, client, NULL, (void *)&chl);
3820 /* Check that client has rights to change any requested channel modes */
3821 if (!silc_server_check_cmode_rights(channel, chl, mode_mask)) {
3822 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3823 SILC_STATUS_ERR_NO_CHANNEL_PRIV);
3828 * Check the modes. Modes that requires nothing special operation are
3832 if (mode_mask & SILC_CHANNEL_MODE_PRIVKEY) {
3833 /* Channel uses private keys to protect traffic. Client(s) has set the
3834 key locally they want to use, server does not know that key. */
3835 /* Nothing interesting to do here */
3837 if (channel->mode & SILC_CHANNEL_MODE_PRIVKEY) {
3838 /* The mode is removed and we need to generate and distribute
3839 new channel key. Clients are not using private channel keys
3840 anymore after this. */
3842 /* Re-generate channel key */
3843 if (!silc_server_create_channel_key(server, channel, 0))
3846 /* Send the channel key. This sends it to our local clients and if
3847 we are normal server to our router as well. */
3848 silc_server_send_channel_key(server, NULL, channel,
3849 server->server_type == SILC_ROUTER ?
3850 FALSE : !server->standalone);
3852 cipher = channel->channel_key->cipher->name;
3853 hmac = (char *)silc_hmac_get_name(channel->hmac);
3857 if (mode_mask & SILC_CHANNEL_MODE_ULIMIT) {
3858 /* User limit is set on channel */
3861 /* Get user limit */
3862 tmp = silc_argument_get_arg_type(cmd->args, 3, NULL);
3864 if (!(channel->mode & SILC_CHANNEL_MODE_ULIMIT)) {
3865 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3866 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3870 SILC_GET32_MSB(user_limit, tmp);
3871 channel->user_limit = user_limit;
3874 if (channel->mode & SILC_CHANNEL_MODE_ULIMIT)
3875 /* User limit mode is unset. Remove user limit */
3876 channel->user_limit = 0;
3879 if (mode_mask & SILC_CHANNEL_MODE_PASSPHRASE) {
3880 if (!(channel->mode & SILC_CHANNEL_MODE_PASSPHRASE)) {
3881 /* Passphrase has been set to channel */
3883 /* Get the passphrase */
3884 tmp = silc_argument_get_arg_type(cmd->args, 4, NULL);
3886 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3887 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3891 /* Save the passphrase */
3892 passphrase = channel->passphrase = strdup(tmp);
3895 if (channel->mode & SILC_CHANNEL_MODE_PASSPHRASE) {
3896 /* Passphrase mode is unset. remove the passphrase */
3897 if (channel->passphrase) {
3898 silc_free(channel->passphrase);
3899 channel->passphrase = NULL;
3904 if (mode_mask & SILC_CHANNEL_MODE_CIPHER) {
3905 if (!(channel->mode & SILC_CHANNEL_MODE_CIPHER)) {
3906 /* Cipher to use protect the traffic */
3907 SilcCipher newkey, oldkey;
3910 cipher = silc_argument_get_arg_type(cmd->args, 5, NULL);
3912 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3913 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3917 /* Delete old cipher and allocate the new one */
3918 if (!silc_cipher_alloc(cipher, &newkey)) {
3919 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3920 SILC_STATUS_ERR_UNKNOWN_ALGORITHM);
3924 oldkey = channel->channel_key;
3925 channel->channel_key = newkey;
3927 /* Re-generate channel key */
3928 if (!silc_server_create_channel_key(server, channel, 0)) {
3929 /* We don't have new key, revert to old one */
3930 channel->channel_key = oldkey;
3934 /* Remove old channel key for good */
3935 silc_cipher_free(oldkey);
3937 /* Send the channel key. This sends it to our local clients and if
3938 we are normal server to our router as well. */
3939 silc_server_send_channel_key(server, NULL, channel,
3940 server->server_type == SILC_ROUTER ?
3941 FALSE : !server->standalone);
3944 if (channel->mode & SILC_CHANNEL_MODE_CIPHER) {
3945 /* Cipher mode is unset. Remove the cipher and revert back to
3947 SilcCipher newkey, oldkey;
3948 cipher = channel->cipher;
3950 /* Delete old cipher and allocate default one */
3951 if (!silc_cipher_alloc(cipher ? cipher : SILC_DEFAULT_CIPHER, &newkey)) {
3952 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3953 SILC_STATUS_ERR_UNKNOWN_ALGORITHM);
3957 oldkey = channel->channel_key;
3958 channel->channel_key = newkey;
3960 /* Re-generate channel key */
3961 if (!silc_server_create_channel_key(server, channel, 0)) {
3962 /* We don't have new key, revert to old one */
3963 channel->channel_key = oldkey;
3967 /* Remove old channel key for good */
3968 silc_cipher_free(oldkey);
3970 /* Send the channel key. This sends it to our local clients and if
3971 we are normal server to our router as well. */
3972 silc_server_send_channel_key(server, NULL, channel,
3973 server->server_type == SILC_ROUTER ?
3974 FALSE : !server->standalone);
3978 if (mode_mask & SILC_CHANNEL_MODE_HMAC) {
3979 if (!(channel->mode & SILC_CHANNEL_MODE_HMAC)) {
3980 /* HMAC to use protect the traffic */
3981 unsigned char hash[32];
3985 hmac = silc_argument_get_arg_type(cmd->args, 6, NULL);
3987 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3988 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3992 /* Delete old hmac and allocate the new one */
3993 if (!silc_hmac_alloc(hmac, NULL, &newhmac)) {
3994 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3995 SILC_STATUS_ERR_UNKNOWN_ALGORITHM);
3999 silc_hmac_free(channel->hmac);
4000 channel->hmac = newhmac;
4002 /* Set the HMAC key out of current channel key. The client must do
4004 silc_hash_make(silc_hmac_get_hash(channel->hmac), channel->key,
4005 channel->key_len / 8, hash);
4006 silc_hmac_set_key(channel->hmac, hash,
4007 silc_hash_len(silc_hmac_get_hash(channel->hmac)));
4008 memset(hash, 0, sizeof(hash));
4011 if (channel->mode & SILC_CHANNEL_MODE_HMAC) {
4012 /* Hmac mode is unset. Remove the hmac and revert back to
4015 unsigned char hash[32];
4016 hmac = channel->hmac_name;
4018 /* Delete old hmac and allocate default one */
4019 silc_hmac_free(channel->hmac);
4020 if (!silc_hmac_alloc(hmac ? hmac : SILC_DEFAULT_HMAC, NULL, &newhmac)) {
4021 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
4022 SILC_STATUS_ERR_UNKNOWN_ALGORITHM);
4026 silc_hmac_free(channel->hmac);
4027 channel->hmac = newhmac;
4029 /* Set the HMAC key out of current channel key. The client must do
4031 silc_hash_make(silc_hmac_get_hash(channel->hmac), channel->key,
4032 channel->key_len / 8,
4034 silc_hmac_set_key(channel->hmac, hash,
4035 silc_hash_len(silc_hmac_get_hash(channel->hmac)));
4036 memset(hash, 0, sizeof(hash));
4040 if (mode_mask & SILC_CHANNEL_MODE_FOUNDER_AUTH) {
4041 if (chl->mode & SILC_CHANNEL_UMODE_CHANFO) {
4042 if (!(channel->mode & SILC_CHANNEL_MODE_FOUNDER_AUTH)) {
4043 /* Set the founder authentication */
4044 SilcAuthPayload auth;
4046 tmp = silc_argument_get_arg_type(cmd->args, 7, &tmp_len);
4048 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
4049 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
4053 auth = silc_auth_payload_parse(tmp, tmp_len);
4055 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
4056 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
4060 /* Save the public key */
4061 tmp = silc_pkcs_public_key_encode(idata->public_key, &tmp_len);
4062 silc_pkcs_public_key_decode(tmp, tmp_len, &channel->founder_key);
4065 channel->founder_method = silc_auth_get_method(auth);
4067 if (channel->founder_method == SILC_AUTH_PASSWORD) {
4068 tmp = silc_auth_get_data(auth, &tmp_len);
4069 channel->founder_passwd =
4070 silc_calloc(tmp_len + 1, sizeof(*channel->founder_passwd));
4071 memcpy(channel->founder_passwd, tmp, tmp_len);
4072 channel->founder_passwd_len = tmp_len;
4074 /* Verify the payload before setting the mode */
4075 if (!silc_auth_verify(auth, channel->founder_method,
4076 channel->founder_key, 0, idata->hash,
4077 client->id, SILC_ID_CLIENT)) {
4078 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
4079 SILC_STATUS_ERR_AUTH_FAILED);
4084 silc_auth_payload_free(auth);
4088 if (chl->mode & SILC_CHANNEL_UMODE_CHANFO) {
4089 if (channel->mode & SILC_CHANNEL_MODE_FOUNDER_AUTH) {
4090 if (channel->founder_key)
4091 silc_pkcs_public_key_free(channel->founder_key);
4092 if (channel->founder_passwd) {
4093 silc_free(channel->founder_passwd);
4094 channel->founder_passwd = NULL;
4100 /* Finally, set the mode */
4101 channel->mode = mode_mask;
4103 /* Send CMODE_CHANGE notify. */
4104 cidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
4105 silc_server_send_notify_to_channel(server, NULL, channel, FALSE,
4106 SILC_NOTIFY_TYPE_CMODE_CHANGE, 5,
4107 cidp->data, cidp->len,
4109 cipher, cipher ? strlen(cipher) : 0,
4110 hmac, hmac ? strlen(hmac) : 0,
4111 passphrase, passphrase ?
4112 strlen(passphrase) : 0);
4114 /* Set CMODE notify type to network */
4115 if (!server->standalone)
4116 silc_server_send_notify_cmode(server, server->router->connection,
4117 server->server_type == SILC_ROUTER ?
4118 TRUE : FALSE, channel,
4119 mode_mask, client->id, SILC_ID_CLIENT,
4120 cipher, hmac, passphrase);
4122 /* Send command reply to sender */
4123 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_CMODE,
4124 SILC_STATUS_OK, ident, 2,
4125 2, tmp_id, tmp_len2,
4127 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
4128 packet->data, packet->len, FALSE);
4130 silc_buffer_free(packet);
4131 silc_free(channel_id);
4132 silc_buffer_free(cidp);
4135 silc_server_command_free(cmd);
4138 /* Server side of CUMODE command. Changes client's mode on a channel. */
4140 SILC_SERVER_CMD_FUNC(cumode)
4142 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4143 SilcServer server = cmd->server;
4144 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
4145 SilcIDListData idata = (SilcIDListData)client;
4146 SilcChannelID *channel_id;
4147 SilcClientID *client_id;
4148 SilcChannelEntry channel;
4149 SilcClientEntry target_client;
4150 SilcChannelClientEntry chl;
4151 SilcBuffer packet, idp;
4152 unsigned char *tmp_id, *tmp_ch_id, *tmp_mask;
4153 uint32 target_mask, sender_mask = 0, tmp_len, tmp_ch_len;
4155 uint16 ident = silc_command_get_ident(cmd->payload);
4157 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_CUMODE, cmd, 3, 4);
4159 /* Get Channel ID */
4160 tmp_ch_id = silc_argument_get_arg_type(cmd->args, 1, &tmp_ch_len);
4162 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
4163 SILC_STATUS_ERR_NO_CHANNEL_ID);
4166 channel_id = silc_id_payload_parse_id(tmp_ch_id, tmp_ch_len);
4168 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
4169 SILC_STATUS_ERR_NO_CHANNEL_ID);
4173 /* Get channel entry */
4174 channel = silc_idlist_find_channel_by_id(server->local_list,
4177 channel = silc_idlist_find_channel_by_id(server->global_list,
4180 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
4181 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
4186 /* Check whether sender is on the channel */
4187 if (!silc_server_client_on_channel(client, channel)) {
4188 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
4189 SILC_STATUS_ERR_NOT_ON_CHANNEL);
4193 /* Check that client has rights to change other's rights */
4194 silc_hash_table_find(channel->user_list, client, NULL, (void *)&chl);
4195 sender_mask = chl->mode;
4197 /* Get the target client's channel mode mask */
4198 tmp_mask = silc_argument_get_arg_type(cmd->args, 2, NULL);
4200 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
4201 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
4204 SILC_GET32_MSB(target_mask, tmp_mask);
4206 /* Get target Client ID */
4207 tmp_id = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
4209 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
4210 SILC_STATUS_ERR_NO_CLIENT_ID);
4213 client_id = silc_id_payload_parse_id(tmp_id, tmp_len);
4215 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
4216 SILC_STATUS_ERR_NO_CLIENT_ID);
4220 /* Get target client's entry */
4221 target_client = silc_idlist_find_client_by_id(server->local_list,
4222 client_id, TRUE, NULL);
4223 if (!target_client) {
4224 target_client = silc_idlist_find_client_by_id(server->global_list,
4225 client_id, TRUE, NULL);
4228 if (target_client != client &&
4229 !(sender_mask & SILC_CHANNEL_UMODE_CHANFO) &&
4230 !(sender_mask & SILC_CHANNEL_UMODE_CHANOP)) {
4231 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
4232 SILC_STATUS_ERR_NO_CHANNEL_PRIV);
4236 /* Check whether target client is on the channel */
4237 if (target_client != client) {
4238 if (!silc_server_client_on_channel(target_client, channel)) {
4239 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
4240 SILC_STATUS_ERR_USER_NOT_ON_CHANNEL);
4244 /* Get entry to the channel user list */
4245 silc_hash_table_find(channel->user_list, target_client, NULL,
4253 /* If the target client is founder, no one else can change their mode
4255 if (chl->mode & SILC_CHANNEL_UMODE_CHANFO && chl->client != target_client) {
4256 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
4257 SILC_STATUS_ERR_NOT_YOU);
4261 if (target_mask & SILC_CHANNEL_UMODE_CHANFO) {
4262 if (!(chl->mode & SILC_CHANNEL_UMODE_CHANFO)) {
4263 /* The client tries to claim the founder rights. */
4264 unsigned char *tmp_auth;
4265 uint32 tmp_auth_len, auth_len;
4268 if (target_client != client) {
4269 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
4270 SILC_STATUS_ERR_NOT_YOU);
4274 if (!(channel->mode & SILC_CHANNEL_MODE_FOUNDER_AUTH) ||
4275 !channel->founder_key || !idata->public_key ||
4276 !silc_pkcs_public_key_compare(channel->founder_key,
4277 idata->public_key)) {
4278 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
4279 SILC_STATUS_ERR_NOT_YOU);
4283 tmp_auth = silc_argument_get_arg_type(cmd->args, 4, &tmp_auth_len);
4285 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
4286 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
4290 auth = (channel->founder_method == SILC_AUTH_PASSWORD ?
4291 (void *)channel->founder_passwd : (void *)channel->founder_key);
4292 auth_len = (channel->founder_method == SILC_AUTH_PASSWORD ?
4293 channel->founder_passwd_len : 0);
4295 if (!silc_auth_verify_data(tmp_auth, tmp_auth_len,
4296 channel->founder_method, auth, auth_len,
4297 idata->hash, client->id, SILC_ID_CLIENT)) {
4298 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
4299 SILC_STATUS_ERR_AUTH_FAILED);
4303 sender_mask = chl->mode |= SILC_CHANNEL_UMODE_CHANFO;
4307 if (chl->mode & SILC_CHANNEL_UMODE_CHANFO) {
4308 if (target_client == client) {
4309 /* Remove channel founder rights from itself */
4310 chl->mode &= ~SILC_CHANNEL_UMODE_CHANFO;
4313 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
4314 SILC_STATUS_ERR_NOT_YOU);
4320 if (target_mask & SILC_CHANNEL_UMODE_CHANOP) {
4321 /* Promote to operator */
4322 if (!(chl->mode & SILC_CHANNEL_UMODE_CHANOP)) {
4323 if (!(sender_mask & SILC_CHANNEL_UMODE_CHANOP) &&
4324 !(sender_mask & SILC_CHANNEL_UMODE_CHANFO)) {
4325 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
4326 SILC_STATUS_ERR_NO_CHANNEL_PRIV);
4330 chl->mode |= SILC_CHANNEL_UMODE_CHANOP;
4334 if (chl->mode & SILC_CHANNEL_UMODE_CHANOP) {
4335 if (!(sender_mask & SILC_CHANNEL_UMODE_CHANOP) &&
4336 !(sender_mask & SILC_CHANNEL_UMODE_CHANFO)) {
4337 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
4338 SILC_STATUS_ERR_NO_CHANNEL_PRIV);
4342 /* Demote to normal user */
4343 chl->mode &= ~SILC_CHANNEL_UMODE_CHANOP;
4348 idp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
4349 tmp_id = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
4351 /* Send notify to channel, notify only if mode was actually changed. */
4353 silc_server_send_notify_to_channel(server, NULL, channel, FALSE,
4354 SILC_NOTIFY_TYPE_CUMODE_CHANGE, 3,
4355 idp->data, idp->len,
4359 /* Set CUMODE notify type to network */
4360 if (!server->standalone)
4361 silc_server_send_notify_cumode(server, server->router->connection,
4362 server->server_type == SILC_ROUTER ?
4363 TRUE : FALSE, channel,
4364 target_mask, client->id,
4369 /* Send command reply to sender */
4370 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_CUMODE,
4371 SILC_STATUS_OK, ident, 3,
4373 3, tmp_ch_id, tmp_ch_len,
4374 4, tmp_id, tmp_len);
4375 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
4376 packet->data, packet->len, FALSE);
4378 silc_buffer_free(packet);
4379 silc_free(channel_id);
4380 silc_free(client_id);
4381 silc_buffer_free(idp);
4384 silc_server_command_free(cmd);
4387 /* Server side of KICK command. Kicks client out of channel. */
4389 SILC_SERVER_CMD_FUNC(kick)
4391 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4392 SilcServer server = cmd->server;
4393 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
4394 SilcClientEntry target_client;
4395 SilcChannelID *channel_id;
4396 SilcClientID *client_id;
4397 SilcChannelEntry channel;
4398 SilcChannelClientEntry chl;
4400 uint32 tmp_len, target_idp_len;
4401 unsigned char *tmp, *comment, *target_idp;
4403 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_LEAVE, cmd, 1, 3);
4405 /* Get Channel ID */
4406 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
4408 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4409 SILC_STATUS_ERR_NO_CHANNEL_ID);
4412 channel_id = silc_id_payload_parse_id(tmp, tmp_len);
4414 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4415 SILC_STATUS_ERR_NO_CHANNEL_ID);
4419 /* Get channel entry */
4420 channel = silc_idlist_find_channel_by_id(server->local_list,
4423 channel = silc_idlist_find_channel_by_id(server->local_list,
4426 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4427 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
4432 /* Check whether sender is on the channel */
4433 if (!silc_server_client_on_channel(client, channel)) {
4434 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4435 SILC_STATUS_ERR_NOT_ON_CHANNEL);
4439 /* Check that the kicker is channel operator or channel founder */
4440 silc_hash_table_find(channel->user_list, client, NULL, (void *)&chl);
4441 if (chl->mode == SILC_CHANNEL_UMODE_NONE) {
4442 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4443 SILC_STATUS_ERR_NO_CHANNEL_PRIV);
4447 /* Get target Client ID */
4448 target_idp = silc_argument_get_arg_type(cmd->args, 2, &target_idp_len);
4450 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4451 SILC_STATUS_ERR_NO_CLIENT_ID);
4454 client_id = silc_id_payload_parse_id(target_idp, target_idp_len);
4456 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4457 SILC_STATUS_ERR_NO_CLIENT_ID);
4461 /* Get target client's entry */
4462 target_client = silc_idlist_find_client_by_id(server->local_list,
4463 client_id, TRUE, NULL);
4464 if (!target_client) {
4465 target_client = silc_idlist_find_client_by_id(server->global_list,
4466 client_id, TRUE, NULL);
4469 /* Check that the target client is not channel founder. Channel founder
4470 cannot be kicked from the channel. */
4471 silc_hash_table_find(channel->user_list, target_client, NULL, (void *)&chl);
4472 if (chl->mode & SILC_CHANNEL_UMODE_CHANFO) {
4473 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4474 SILC_STATUS_ERR_NO_CHANNEL_FOPRIV);
4478 /* Check whether target client is on the channel */
4479 if (!silc_server_client_on_channel(target_client, channel)) {
4480 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4481 SILC_STATUS_ERR_USER_NOT_ON_CHANNEL);
4487 comment = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
4491 /* Send command reply to sender */
4492 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4495 /* Send KICKED notify to local clients on the channel */
4496 idp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
4497 silc_server_send_notify_to_channel(server, NULL, channel, FALSE,
4498 SILC_NOTIFY_TYPE_KICKED, 3,
4499 target_idp, target_idp_len,
4500 comment, comment ? strlen(comment) : 0,
4501 idp->data, idp->len);
4502 silc_buffer_free(idp);
4504 /* Remove the client from the channel. If the channel does not exist
4505 after removing the client then the client kicked itself off the channel
4506 and we don't have to send anything after that. */
4507 if (!silc_server_remove_from_one_channel(server, NULL, channel,
4508 target_client, FALSE))
4511 /* Send KICKED notify to primary route */
4512 if (!server->standalone)
4513 silc_server_send_notify_kicked(server, server->router->connection,
4514 server->server_type == SILC_ROUTER ?
4515 TRUE : FALSE, channel,
4516 target_client->id, comment);
4518 if (!(channel->mode & SILC_CHANNEL_MODE_PRIVKEY)) {
4519 /* Re-generate channel key */
4520 if (!silc_server_create_channel_key(server, channel, 0))
4523 /* Send the channel key to the channel. The key of course is not sent
4524 to the client who was kicked off the channel. */
4525 silc_server_send_channel_key(server, target_client->connection, channel,
4526 server->server_type == SILC_ROUTER ?
4527 FALSE : !server->standalone);
4531 silc_server_command_free(cmd);
4534 /* Server side of OPER command. Client uses this comand to obtain server
4535 operator privileges to this server/router. */
4537 SILC_SERVER_CMD_FUNC(oper)
4539 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4540 SilcServer server = cmd->server;
4541 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
4542 unsigned char *username, *auth;
4544 SilcServerConfigSectionAdminConnection *admin;
4545 SilcIDListData idata = (SilcIDListData)client;
4547 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_OPER, cmd, 1, 2);
4549 if (!client || cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
4552 /* Get the username */
4553 username = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
4555 silc_server_command_send_status_reply(cmd, SILC_COMMAND_OPER,
4556 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
4560 /* Get the admin configuration */
4561 admin = silc_server_config_find_admin(server->config, cmd->sock->ip,
4562 username, client->nickname);
4564 admin = silc_server_config_find_admin(server->config, cmd->sock->hostname,
4565 username, client->nickname);
4567 silc_server_command_send_status_reply(cmd, SILC_COMMAND_OPER,
4568 SILC_STATUS_ERR_AUTH_FAILED);
4573 /* Get the authentication payload */
4574 auth = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
4576 silc_server_command_send_status_reply(cmd, SILC_COMMAND_OPER,
4577 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
4581 /* Verify the authentication data */
4582 if (!silc_auth_verify_data(auth, tmp_len, admin->auth_meth,
4583 admin->auth_data, admin->auth_data_len,
4584 idata->hash, client->id, SILC_ID_CLIENT)) {
4585 silc_server_command_send_status_reply(cmd, SILC_COMMAND_OPER,
4586 SILC_STATUS_ERR_AUTH_FAILED);
4590 /* Client is now server operator */
4591 client->mode |= SILC_UMODE_SERVER_OPERATOR;
4593 /* Send UMODE change to primary router */
4594 if (!server->standalone)
4595 silc_server_send_notify_umode(server, server->router->connection, TRUE,
4596 client->id, client->mode);
4598 /* Send reply to the sender */
4599 silc_server_command_send_status_reply(cmd, SILC_COMMAND_OPER,
4603 silc_server_command_free(cmd);
4606 /* Server side of SILCOPER command. Client uses this comand to obtain router
4607 operator privileges to this router. */
4609 SILC_SERVER_CMD_FUNC(silcoper)
4611 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4612 SilcServer server = cmd->server;
4613 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
4614 unsigned char *username, *auth;
4616 SilcServerConfigSectionAdminConnection *admin;
4617 SilcIDListData idata = (SilcIDListData)client;
4619 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_SILCOPER, cmd, 1, 2);
4621 if (!client || cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
4624 if (server->server_type != SILC_ROUTER) {
4625 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
4626 SILC_STATUS_ERR_AUTH_FAILED);
4630 /* Get the username */
4631 username = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
4633 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
4634 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
4638 /* Get the admin configuration */
4639 admin = silc_server_config_find_admin(server->config, cmd->sock->ip,
4640 username, client->nickname);
4642 admin = silc_server_config_find_admin(server->config, cmd->sock->hostname,
4643 username, client->nickname);
4645 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
4646 SILC_STATUS_ERR_AUTH_FAILED);
4651 /* Get the authentication payload */
4652 auth = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
4654 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
4655 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
4659 /* Verify the authentication data */
4660 if (!silc_auth_verify_data(auth, tmp_len, admin->auth_meth,
4661 admin->auth_data, admin->auth_data_len,
4662 idata->hash, client->id, SILC_ID_CLIENT)) {
4663 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
4664 SILC_STATUS_ERR_AUTH_FAILED);
4668 /* Client is now router operator */
4669 client->mode |= SILC_UMODE_ROUTER_OPERATOR;
4671 /* Send UMODE change to primary router */
4672 if (!server->standalone)
4673 silc_server_send_notify_umode(server, server->router->connection, TRUE,
4674 client->id, client->mode);
4676 /* Send reply to the sender */
4677 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
4681 silc_server_command_free(cmd);
4684 /* Server side command of CONNECT. Connects us to the specified remote
4685 server or router. */
4687 SILC_SERVER_CMD_FUNC(connect)
4689 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4690 SilcServer server = cmd->server;
4691 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
4692 unsigned char *tmp, *host;
4694 uint32 port = SILC_PORT;
4696 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_CONNECT, cmd, 1, 2);
4698 if (!client || cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
4701 /* Check whether client has the permissions. */
4702 if (client->mode == SILC_UMODE_NONE) {
4703 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CONNECT,
4704 SILC_STATUS_ERR_NO_SERVER_PRIV);
4708 if (server->server_type == SILC_ROUTER &&
4709 client->mode & SILC_UMODE_SERVER_OPERATOR) {
4710 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CONNECT,
4711 SILC_STATUS_ERR_NO_ROUTER_PRIV);
4715 /* Get the remote server */
4716 host = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
4718 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CONNECT,
4719 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
4724 tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
4726 SILC_GET32_MSB(port, tmp);
4728 /* Create the connection. It is done with timeout and is async. */
4729 silc_server_create_connection(server, host, port);
4731 /* Send reply to the sender */
4732 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CONNECT,
4736 silc_server_command_free(cmd);
4739 /* Server side of command BAN. This is used to manage the ban list of the
4740 channel. To add clients and remove clients from the ban list. */
4742 SILC_SERVER_CMD_FUNC(ban)
4744 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4745 SilcServer server = cmd->server;
4746 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
4748 SilcChannelEntry channel;
4749 SilcChannelClientEntry chl;
4750 SilcChannelID *channel_id = NULL;
4751 unsigned char *id, *add, *del;
4752 uint32 id_len, tmp_len;
4753 uint16 ident = silc_command_get_ident(cmd->payload);
4755 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
4758 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_BAN, cmd, 0, 3);
4760 /* Get Channel ID */
4761 id = silc_argument_get_arg_type(cmd->args, 1, &id_len);
4763 channel_id = silc_id_payload_parse_id(id, id_len);
4765 silc_server_command_send_status_reply(cmd, SILC_COMMAND_BAN,
4766 SILC_STATUS_ERR_NO_CHANNEL_ID);
4771 /* Get channel entry. The server must know about the channel since the
4772 client is expected to be on the channel. */
4773 channel = silc_idlist_find_channel_by_id(server->local_list,
4776 channel = silc_idlist_find_channel_by_id(server->global_list,
4779 silc_server_command_send_status_reply(cmd, SILC_COMMAND_BAN,
4780 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
4785 /* Check whether this client is on the channel */
4786 if (!silc_server_client_on_channel(client, channel)) {
4787 silc_server_command_send_status_reply(cmd, SILC_COMMAND_BAN,
4788 SILC_STATUS_ERR_NOT_ON_CHANNEL);
4792 /* Get entry to the channel user list */
4793 silc_hash_table_find(channel->user_list, client, NULL, (void *)&chl);
4795 /* The client must be at least channel operator. */
4796 if (!(chl->mode & SILC_CHANNEL_UMODE_CHANOP)) {
4797 silc_server_command_send_status_reply(cmd, SILC_COMMAND_BAN,
4798 SILC_STATUS_ERR_NO_CHANNEL_PRIV);
4802 /* Get the new ban and add it to the ban list */
4803 add = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
4805 if (!channel->ban_list)
4806 channel->ban_list = silc_calloc(tmp_len + 2, sizeof(*channel->ban_list));
4808 channel->ban_list = silc_realloc(channel->ban_list,
4809 sizeof(*channel->ban_list) *
4811 strlen(channel->ban_list) + 2));
4812 if (add[tmp_len - 1] == ',')
4813 add[tmp_len - 1] = '\0';
4815 strncat(channel->ban_list, add, tmp_len);
4816 strncat(channel->ban_list, ",", 1);
4819 /* Get the ban to be removed and remove it from the list */
4820 del = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
4821 if (del && channel->ban_list) {
4822 char *start, *end, *n;
4824 if (!strncmp(channel->ban_list, del, strlen(channel->ban_list) - 1)) {
4825 silc_free(channel->ban_list);
4826 channel->ban_list = NULL;
4828 start = strstr(channel->ban_list, del);
4829 if (start && strlen(start) >= tmp_len) {
4830 end = start + tmp_len;
4831 n = silc_calloc(strlen(channel->ban_list) - tmp_len, sizeof(*n));
4832 strncat(n, channel->ban_list, start - channel->ban_list);
4833 strncat(n, end + 1, ((channel->ban_list + strlen(channel->ban_list)) -
4835 silc_free(channel->ban_list);
4836 channel->ban_list = n;
4841 /* Send the BAN notify type to our primary router. */
4842 if (!server->standalone && (add || del))
4843 silc_server_send_notify_ban(server, server->router->connection,
4844 server->server_type == SILC_ROUTER ?
4845 TRUE : FALSE, channel, add, del);
4847 /* Send the reply back to the client */
4849 silc_command_reply_payload_encode_va(SILC_COMMAND_BAN,
4850 SILC_STATUS_OK, ident, 2,
4852 3, channel->ban_list,
4854 strlen(channel->ban_list) - 1 : 0);
4855 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
4856 packet->data, packet->len, FALSE);
4858 silc_buffer_free(packet);
4861 silc_free(channel_id);
4862 silc_server_command_free(cmd);
4865 /* Server side command of CLOSE. Closes connection to a specified server. */
4867 SILC_SERVER_CMD_FUNC(close)
4869 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4870 SilcServer server = cmd->server;
4871 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
4872 SilcServerEntry server_entry;
4873 SilcSocketConnection sock;
4876 unsigned char *name;
4877 uint32 port = SILC_PORT;
4879 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_CLOSE, cmd, 1, 2);
4881 if (!client || cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
4884 /* Check whether client has the permissions. */
4885 if (client->mode == SILC_UMODE_NONE) {
4886 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CLOSE,
4887 SILC_STATUS_ERR_NO_SERVER_PRIV);
4891 /* Get the remote server */
4892 name = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
4894 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CLOSE,
4895 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
4900 tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
4902 SILC_GET32_MSB(port, tmp);
4904 server_entry = silc_idlist_find_server_by_conn(server->local_list,
4905 name, port, FALSE, NULL);
4907 server_entry = silc_idlist_find_server_by_conn(server->global_list,
4908 name, port, FALSE, NULL);
4909 if (!server_entry) {
4910 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CLOSE,
4911 SILC_STATUS_ERR_NO_SERVER_ID);
4915 /* Send reply to the sender */
4916 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CLOSE,
4919 /* Close the connection to the server */
4920 sock = (SilcSocketConnection)server_entry->connection;
4922 /* If we shutdown primary router connection manually then don't trigger
4923 any reconnect or backup router connections, by setting the router
4925 if (server->router == server_entry) {
4926 server->id_entry->router = NULL;
4927 server->router = NULL;
4928 server->standalone = TRUE;
4930 silc_server_free_sock_user_data(server, sock, NULL);
4931 silc_server_close_connection(server, sock);
4934 silc_server_command_free(cmd);
4937 /* Server side command of SHUTDOWN. Shutdowns the server and closes all
4938 active connections. */
4940 SILC_SERVER_CMD_FUNC(shutdown)
4942 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4943 SilcServer server = cmd->server;
4944 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
4946 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_SHUTDOWN, cmd, 0, 0);
4948 if (!client || cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
4951 /* Check whether client has the permission. */
4952 if (client->mode == SILC_UMODE_NONE) {
4953 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SHUTDOWN,
4954 SILC_STATUS_ERR_NO_SERVER_PRIV);
4958 /* Send reply to the sender */
4959 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SHUTDOWN,
4962 /* Then, gracefully, or not, bring the server down. */
4963 silc_server_stop(server);
4967 silc_server_command_free(cmd);
4970 /* Server side command of LEAVE. Removes client from a channel. */
4972 SILC_SERVER_CMD_FUNC(leave)
4974 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4975 SilcServer server = cmd->server;
4976 SilcSocketConnection sock = cmd->sock;
4977 SilcClientEntry id_entry = (SilcClientEntry)cmd->sock->user_data;
4978 SilcChannelID *id = NULL;
4979 SilcChannelEntry channel;
4983 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_LEAVE, cmd, 1, 2);
4985 /* Get Channel ID */
4986 tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
4988 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
4989 SILC_STATUS_ERR_NO_CHANNEL_ID);
4992 id = silc_id_payload_parse_id(tmp, len);
4994 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
4995 SILC_STATUS_ERR_NO_CHANNEL_ID);
4999 /* Get channel entry */
5000 channel = silc_idlist_find_channel_by_id(server->local_list, id, NULL);
5002 channel = silc_idlist_find_channel_by_id(server->global_list, id, NULL);
5004 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
5005 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
5010 /* Check whether this client is on the channel */
5011 if (!silc_server_client_on_channel(id_entry, channel)) {
5012 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
5013 SILC_STATUS_ERR_NOT_ON_CHANNEL);
5017 /* Notify routers that they should remove this client from their list
5018 of clients on the channel. Send LEAVE notify type. */
5019 if (!server->standalone)
5020 silc_server_send_notify_leave(server, server->router->connection,
5021 server->server_type == SILC_ROUTER ?
5022 TRUE : FALSE, channel, id_entry->id);
5024 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
5027 /* Remove client from channel */
5028 if (!silc_server_remove_from_one_channel(server, sock, channel, id_entry,
5030 /* If the channel does not exist anymore we won't send anything */
5033 if (!(channel->mode & SILC_CHANNEL_MODE_PRIVKEY)) {
5034 /* Re-generate channel key */
5035 if (!silc_server_create_channel_key(server, channel, 0))
5038 /* Send the channel key */
5039 silc_server_send_channel_key(server, NULL, channel,
5040 server->server_type == SILC_ROUTER ?
5041 FALSE : !server->standalone);
5046 silc_server_command_free(cmd);
5049 /* Server side of command USERS. Resolves clients and their USERS currently
5050 joined on the requested channel. The list of Client ID's and their modes
5051 on the channel is sent back. */
5053 SILC_SERVER_CMD_FUNC(users)
5055 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
5056 SilcServer server = cmd->server;
5057 SilcChannelEntry channel;
5058 SilcChannelID *id = NULL;
5059 SilcBuffer packet, idp;
5060 unsigned char *channel_id;
5061 uint32 channel_id_len;
5062 SilcBuffer client_id_list;
5063 SilcBuffer client_mode_list;
5064 unsigned char lc[4];
5065 uint32 list_count = 0;
5066 uint16 ident = silc_command_get_ident(cmd->payload);
5069 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_USERS, cmd, 1, 2);
5071 /* Get Channel ID */
5072 channel_id = silc_argument_get_arg_type(cmd->args, 1, &channel_id_len);
5074 /* Get channel name */
5075 channel_name = silc_argument_get_arg_type(cmd->args, 2, NULL);
5077 if (!channel_id && !channel_name) {
5078 silc_server_command_send_status_reply(cmd, SILC_COMMAND_USERS,
5079 SILC_STATUS_ERR_NO_CHANNEL_ID);
5084 id = silc_id_payload_parse_id(channel_id, channel_id_len);
5086 silc_server_command_send_status_reply(cmd, SILC_COMMAND_USERS,
5087 SILC_STATUS_ERR_NO_CHANNEL_ID);
5092 /* If we are server and we don't know about this channel we will send
5093 the command to our router. If we know about the channel then we also
5094 have the list of users already. */
5096 channel = silc_idlist_find_channel_by_id(server->local_list, id, NULL);
5098 channel = silc_idlist_find_channel_by_name(server->local_list,
5099 channel_name, NULL);
5101 if (!channel || channel->disabled) {
5102 if (server->server_type != SILC_ROUTER && !server->standalone &&
5106 silc_command_set_ident(cmd->payload, ++server->cmd_ident);
5107 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
5109 /* Send USERS command */
5110 silc_server_packet_send(server, server->router->connection,
5111 SILC_PACKET_COMMAND, cmd->packet->flags,
5112 tmpbuf->data, tmpbuf->len, TRUE);
5114 /* Reprocess this packet after received reply */
5115 silc_server_command_pending(server, SILC_COMMAND_USERS,
5116 silc_command_get_ident(cmd->payload),
5117 silc_server_command_users,
5118 silc_server_command_dup(cmd));
5119 cmd->pending = TRUE;
5120 silc_command_set_ident(cmd->payload, ident);
5121 silc_buffer_free(tmpbuf);
5126 /* Check the global list as well. */
5128 channel = silc_idlist_find_channel_by_id(server->global_list, id, NULL);
5130 channel = silc_idlist_find_channel_by_name(server->global_list,
5131 channel_name, NULL);
5133 /* Channel really does not exist */
5134 silc_server_command_send_status_reply(cmd, SILC_COMMAND_USERS,
5135 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
5140 /* If the channel is private or secret do not send anything, unless the
5141 user requesting this command is on the channel. */
5142 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT) {
5143 if (channel->mode & (SILC_CHANNEL_MODE_PRIVATE | SILC_CHANNEL_MODE_SECRET)
5144 && !silc_server_client_on_channel(cmd->sock->user_data, channel)) {
5145 silc_server_command_send_status_reply(cmd, SILC_COMMAND_USERS,
5146 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
5151 (SILC_CHANNEL_MODE_PRIVATE | SILC_CHANNEL_MODE_SECRET)) {
5152 silc_server_command_send_status_reply(cmd, SILC_COMMAND_USERS,
5153 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
5158 /* Get the users list */
5159 silc_server_get_users_on_channel(server, channel, &client_id_list,
5160 &client_mode_list, &list_count);
5163 SILC_PUT32_MSB(list_count, lc);
5166 idp = silc_id_payload_encode(channel->id, SILC_ID_CHANNEL);
5167 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_USERS,
5168 SILC_STATUS_OK, ident, 4,
5169 2, idp->data, idp->len,
5171 4, client_id_list->data,
5172 client_id_list->len,
5173 5, client_mode_list->data,
5174 client_mode_list->len);
5175 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
5176 packet->data, packet->len, FALSE);
5178 silc_buffer_free(idp);
5179 silc_buffer_free(packet);
5180 silc_buffer_free(client_id_list);
5181 silc_buffer_free(client_mode_list);
5185 silc_server_command_free(cmd);
5188 /* Server side of command GETKEY. This fetches the client's public key
5189 from the server where to the client is connected. */
5191 SILC_SERVER_CMD_FUNC(getkey)
5193 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
5194 SilcServer server = cmd->server;
5196 SilcClientEntry client;
5197 SilcServerEntry server_entry;
5198 SilcClientID *client_id = NULL;
5199 SilcServerID *server_id = NULL;
5200 SilcIDPayload idp = NULL;
5201 uint16 ident = silc_command_get_ident(cmd->payload);
5202 unsigned char *tmp, *pkdata;
5203 uint32 tmp_len, pklen;
5204 SilcBuffer pk = NULL;
5207 SILC_LOG_DEBUG(("Start"));
5209 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
5211 silc_server_command_send_status_reply(cmd, SILC_COMMAND_GETKEY,
5212 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
5215 idp = silc_id_payload_parse(tmp, tmp_len);
5217 silc_server_command_send_status_reply(cmd, SILC_COMMAND_GETKEY,
5218 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
5222 id_type = silc_id_payload_get_type(idp);
5223 if (id_type == SILC_ID_CLIENT) {
5224 client_id = silc_id_payload_get_id(idp);
5226 /* If the client is not found from local list there is no chance it
5227 would be locally connected client so send the command further. */
5228 client = silc_idlist_find_client_by_id(server->local_list,
5229 client_id, TRUE, NULL);
5231 client = silc_idlist_find_client_by_id(server->global_list,
5232 client_id, TRUE, NULL);
5234 if ((!client && !cmd->pending && !server->standalone) ||
5235 (client && !client->connection && !cmd->pending) ||
5236 (client && !client->data.public_key && !cmd->pending)) {
5239 SilcSocketConnection dest_sock;
5241 dest_sock = silc_server_get_client_route(server, NULL, 0,
5246 old_ident = silc_command_get_ident(cmd->payload);
5247 silc_command_set_ident(cmd->payload, ++server->cmd_ident);
5248 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
5250 silc_server_packet_send(server, dest_sock,
5251 SILC_PACKET_COMMAND, cmd->packet->flags,
5252 tmpbuf->data, tmpbuf->len, TRUE);
5254 /* Reprocess this packet after received reply from router */
5255 silc_server_command_pending(server, SILC_COMMAND_GETKEY,
5256 silc_command_get_ident(cmd->payload),
5257 silc_server_command_getkey,
5258 silc_server_command_dup(cmd));
5259 cmd->pending = TRUE;
5260 silc_command_set_ident(cmd->payload, old_ident);
5261 silc_buffer_free(tmpbuf);
5266 silc_server_command_send_status_reply(cmd, SILC_COMMAND_GETKEY,
5267 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID);
5271 /* The client is locally connected, just get the public key and
5272 send it back. If they key does not exist then do not send it,
5273 send just OK reply */
5274 if (!client->data.public_key) {
5278 tmp = silc_pkcs_public_key_encode(client->data.public_key, &tmp_len);
5279 pk = silc_buffer_alloc(4 + tmp_len);
5280 silc_buffer_pull_tail(pk, SILC_BUFFER_END(pk));
5281 silc_buffer_format(pk,
5282 SILC_STR_UI_SHORT(tmp_len),
5283 SILC_STR_UI_SHORT(SILC_SKE_PK_TYPE_SILC),
5284 SILC_STR_UI_XNSTRING(tmp, tmp_len),
5290 } else if (id_type == SILC_ID_SERVER) {
5291 server_id = silc_id_payload_get_id(idp);
5293 /* If the server is not found from local list there is no chance it
5294 would be locally connected server so send the command further. */
5295 server_entry = silc_idlist_find_server_by_id(server->local_list,
5296 server_id, TRUE, NULL);
5298 server_entry = silc_idlist_find_server_by_id(server->global_list,
5299 server_id, TRUE, NULL);
5301 if (server_entry != server->id_entry &&
5302 ((!server_entry && !cmd->pending && !server->standalone) ||
5303 (server_entry && !server_entry->connection && !cmd->pending &&
5304 !server->standalone) ||
5305 (server_entry && !server_entry->data.public_key && !cmd->pending &&
5306 !server->standalone))) {
5310 old_ident = silc_command_get_ident(cmd->payload);
5311 silc_command_set_ident(cmd->payload, ++server->cmd_ident);
5312 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
5314 silc_server_packet_send(server, server->router->connection,
5315 SILC_PACKET_COMMAND, cmd->packet->flags,
5316 tmpbuf->data, tmpbuf->len, TRUE);
5318 /* Reprocess this packet after received reply from router */
5319 silc_server_command_pending(server, SILC_COMMAND_GETKEY,
5320 silc_command_get_ident(cmd->payload),
5321 silc_server_command_getkey,
5322 silc_server_command_dup(cmd));
5323 cmd->pending = TRUE;
5325 silc_command_set_ident(cmd->payload, old_ident);
5326 silc_buffer_free(tmpbuf);
5330 if (!server_entry) {
5331 silc_server_command_send_status_reply(cmd, SILC_COMMAND_GETKEY,
5332 SILC_STATUS_ERR_NO_SUCH_SERVER_ID);
5336 /* If they key does not exist then do not send it, send just OK reply */
5337 if (!server_entry->data.public_key) {
5341 tmp = silc_pkcs_public_key_encode(server_entry->data.public_key,
5343 pk = silc_buffer_alloc(4 + tmp_len);
5344 silc_buffer_pull_tail(pk, SILC_BUFFER_END(pk));
5345 silc_buffer_format(pk,
5346 SILC_STR_UI_SHORT(tmp_len),
5347 SILC_STR_UI_SHORT(SILC_SKE_PK_TYPE_SILC),
5348 SILC_STR_UI_XNSTRING(tmp, tmp_len),
5358 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
5359 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_GETKEY,
5360 SILC_STATUS_OK, ident,
5364 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
5365 packet->data, packet->len, FALSE);
5366 silc_buffer_free(packet);
5369 silc_buffer_free(pk);
5373 silc_id_payload_free(idp);
5374 silc_free(client_id);
5375 silc_free(server_id);
5376 silc_server_command_free(cmd);