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,
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;
125 if (idata->registered)
128 silc_server_command_send_status_reply(cmd, command,
129 SILC_STATUS_ERR_NOT_REGISTERED);
130 silc_server_command_free(cmd);
134 /* Internal context to hold data when executed command with timeout. */
136 SilcServerCommandContext ctx;
137 SilcServerCommand *cmd;
138 } *SilcServerCommandTimeout;
140 /* Timeout callback to process commands with timeout for client. Client's
141 commands are always executed with timeout. */
143 SILC_TASK_CALLBACK(silc_server_command_process_timeout)
145 SilcServerCommandTimeout timeout = (SilcServerCommandTimeout)context;
146 SilcClientEntry client = (SilcClientEntry)timeout->ctx->sock->user_data;
148 /* Update access time */
149 client->last_command = time(NULL);
151 if (!(timeout->cmd->flags & SILC_CF_REG))
152 timeout->cmd->cb(timeout->ctx, NULL);
153 else if (silc_server_is_registered(timeout->ctx->server,
157 timeout->cmd->cb(timeout->ctx, NULL);
162 /* Processes received command packet. */
164 void silc_server_command_process(SilcServer server,
165 SilcSocketConnection sock,
166 SilcPacketContext *packet)
168 SilcServerCommandContext ctx;
169 SilcServerCommand *cmd;
172 /* Allocate command context. This must be free'd by the
173 command routine receiving it. */
174 ctx = silc_server_command_alloc();
175 ctx->server = server;
176 ctx->sock = silc_socket_dup(sock);
177 ctx->packet = silc_packet_context_dup(packet); /* Save original packet */
179 /* Parse the command payload in the packet */
180 ctx->payload = silc_command_payload_parse(packet->buffer);
182 SILC_LOG_ERROR(("Bad command payload, packet dropped"));
183 silc_buffer_free(packet->buffer);
184 silc_packet_context_free(packet);
185 silc_socket_free(ctx->sock);
189 ctx->args = silc_command_get_args(ctx->payload);
191 /* Get the command */
192 command = silc_command_get(ctx->payload);
193 for (cmd = silc_command_list; cmd->cb; cmd++)
194 if (cmd->cmd == command)
198 silc_server_command_send_status_reply(ctx, command,
199 SILC_STATUS_ERR_UNKNOWN_COMMAND);
200 silc_server_command_free(ctx);
204 /* Execute client's commands always with timeout. Normally they are
205 executed with zero (0) timeout but if client is sending command more
206 frequently than once in 2 seconds, then the timeout may be 0 to 2
208 if (sock->type == SILC_SOCKET_TYPE_CLIENT) {
209 SilcClientEntry client = (SilcClientEntry)sock->user_data;
210 SilcServerCommandTimeout timeout = silc_calloc(1, sizeof(*timeout));
216 if (client->last_command && (time(NULL) - client->last_command) < 2) {
217 client->fast_command++;
220 client->fast_command = ((client->fast_command - 1) <= 0 ? 0 :
221 client->fast_command--);
225 if (!fast && ((cmd->flags & SILC_CF_LAG_STRICT) ||
226 (client->fast_command > 5 && cmd->flags & SILC_CF_LAG)))
227 silc_task_register(server->timeout_queue, sock->sock,
228 silc_server_command_process_timeout,
230 2 - (time(NULL) - client->last_command), 0,
232 SILC_TASK_PRI_NORMAL);
234 silc_task_register(server->timeout_queue, sock->sock,
235 silc_server_command_process_timeout,
239 SILC_TASK_PRI_NORMAL);
243 /* Execute for server */
245 if (!(cmd->flags & SILC_CF_REG))
247 else if (silc_server_is_registered(server, sock, ctx, cmd->cmd))
251 /* Allocate Command Context */
253 SilcServerCommandContext silc_server_command_alloc()
255 SilcServerCommandContext ctx = silc_calloc(1, sizeof(*ctx));
260 /* Free's the command context allocated before executing the command */
262 void silc_server_command_free(SilcServerCommandContext ctx)
265 SILC_LOG_DEBUG(("Command context %p refcnt %d->%d", ctx, ctx->users + 1,
267 if (ctx->users < 1) {
269 silc_command_payload_free(ctx->payload);
271 silc_packet_context_free(ctx->packet);
273 silc_socket_free(ctx->sock); /* Decrease reference counter */
278 /* Duplicate Command Context by adding reference counter. The context won't
279 be free'd untill it hits zero. */
281 SilcServerCommandContext
282 silc_server_command_dup(SilcServerCommandContext ctx)
285 SILC_LOG_DEBUG(("Command context %p refcnt %d->%d", ctx, ctx->users - 1,
290 /* Add new pending command to be executed when reply to a command has been
291 received. The `reply_cmd' is the command that will call the `callback'
292 with `context' when reply has been received. If `ident' is non-zero
293 the `callback' will be executed when received reply with command
294 identifier `ident'. */
296 void silc_server_command_pending(SilcServer server,
297 SilcCommand reply_cmd,
299 SilcServerPendingDestructor destructor,
300 SilcCommandCb callback,
303 SilcServerCommandPending *reply;
305 reply = silc_calloc(1, sizeof(*reply));
306 reply->reply_cmd = reply_cmd;
307 reply->ident = ident;
308 reply->context = context;
309 reply->callback = callback;
310 reply->destructor = destructor;
311 silc_dlist_add(server->pending_commands, reply);
314 /* Deletes pending command by reply command type. */
316 void silc_server_command_pending_del(SilcServer server,
317 SilcCommand reply_cmd,
320 SilcServerCommandPending *r;
322 silc_dlist_start(server->pending_commands);
323 while ((r = silc_dlist_get(server->pending_commands)) != SILC_LIST_END) {
324 if (r->reply_cmd == reply_cmd && r->ident == ident) {
325 silc_dlist_del(server->pending_commands, r);
331 /* Checks for pending commands and marks callbacks to be called from
332 the command reply function. Returns TRUE if there were pending command. */
334 int silc_server_command_pending_check(SilcServer server,
335 SilcServerCommandReplyContext ctx,
339 SilcServerCommandPending *r;
341 silc_dlist_start(server->pending_commands);
342 while ((r = silc_dlist_get(server->pending_commands)) != SILC_LIST_END) {
343 if (r->reply_cmd == command && r->ident == ident) {
344 ctx->context = r->context;
345 ctx->callback = r->callback;
346 ctx->destructor = r->destructor;
355 /* Destructor function for pending callbacks. This is called when using
356 pending commands to free the context given for the pending command. */
358 static void silc_server_command_destructor(void *context)
360 silc_server_command_free((SilcServerCommandContext)context);
363 /* Sends simple status message as command reply packet */
366 silc_server_command_send_status_reply(SilcServerCommandContext cmd,
368 SilcCommandStatus status)
372 SILC_LOG_DEBUG(("Sending command status %d", status));
375 silc_command_reply_payload_encode_va(command, status,
376 silc_command_get_ident(cmd->payload),
378 silc_server_packet_send(cmd->server, cmd->sock,
379 SILC_PACKET_COMMAND_REPLY, 0,
380 buffer->data, buffer->len, FALSE);
381 silc_buffer_free(buffer);
384 /* Sends command status reply with one extra argument. The argument
385 type must be sent as argument. */
388 silc_server_command_send_status_data(SilcServerCommandContext cmd,
390 SilcCommandStatus status,
397 SILC_LOG_DEBUG(("Sending command status %d", status));
400 silc_command_reply_payload_encode_va(command, status,
401 silc_command_get_ident(cmd->payload),
402 1, arg_type, arg, arg_len);
403 silc_server_packet_send(cmd->server, cmd->sock,
404 SILC_PACKET_COMMAND_REPLY, 0,
405 buffer->data, buffer->len, FALSE);
406 silc_buffer_free(buffer);
409 /* This function can be called to check whether in the command reply
410 an error occurred. This function has no effect if this is called
411 when the command function was not called as pending command callback.
412 This returns TRUE if error had occurred. */
415 silc_server_command_pending_error_check(SilcServerCommandContext cmd,
416 SilcServerCommandReplyContext cmdr,
419 SilcCommandStatus status;
421 if (!cmd->pending || !cmdr)
424 SILC_GET16_MSB(status, silc_argument_get_arg_type(cmdr->args, 1, NULL));
425 if (status != SILC_STATUS_OK &&
426 status != SILC_STATUS_LIST_START &&
427 status != SILC_STATUS_LIST_ITEM &&
428 status != SILC_STATUS_LIST_END) {
429 /* Send the error message */
430 silc_server_command_send_status_reply(cmd, command, status);
437 /******************************************************************************
441 ******************************************************************************/
444 silc_server_command_whois_parse(SilcServerCommandContext cmd,
445 SilcClientID ***client_id,
446 uint32 *client_id_count,
454 uint32 argc = silc_argument_get_arg_num(cmd->args);
457 /* If client ID is in the command it must be used instead of nickname */
458 tmp = silc_argument_get_arg_type(cmd->args, 3, &len);
460 /* No ID, get the nickname@server string and parse it. */
461 tmp = silc_argument_get_arg_type(cmd->args, 1, NULL);
463 if (strchr(tmp, '@')) {
464 len = strcspn(tmp, "@");
465 *nickname = silc_calloc(len + 1, sizeof(char));
466 memcpy(*nickname, tmp, len);
467 *server_name = silc_calloc(strlen(tmp) - len, sizeof(char));
468 memcpy(*server_name, tmp + len + 1, strlen(tmp) - len - 1);
470 *nickname = strdup(tmp);
473 silc_server_command_send_status_reply(cmd, command,
474 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
478 /* Command includes ID, we must use that. Also check whether the command
479 has more than one ID set - take them all. */
481 *client_id = silc_calloc(1, sizeof(**client_id));
482 (*client_id)[0] = silc_id_payload_parse_id(tmp, len);
483 if ((*client_id)[0] == NULL) {
484 silc_free(*client_id);
487 *client_id_count = 1;
489 /* Take all ID's from the command packet */
491 for (k = 1, i = 1; i < argc; i++) {
492 tmp = silc_argument_get_arg_type(cmd->args, i + 3, &len);
494 *client_id = silc_realloc(*client_id, sizeof(**client_id) *
495 (*client_id_count + 1));
496 (*client_id)[k] = silc_id_payload_parse_id(tmp, len);
497 if ((*client_id)[k] == NULL) {
498 /* Cleanup all and fail */
499 for (i = 0; i < *client_id_count; i++)
500 silc_free((*client_id)[i]);
501 silc_free(*client_id);
504 (*client_id_count)++;
511 /* Get the max count of reply messages allowed */
512 tmp = silc_argument_get_arg_type(cmd->args, 2, NULL);
522 silc_server_command_whois_check(SilcServerCommandContext cmd,
523 SilcClientEntry *clients,
524 uint32 clients_count)
526 SilcServer server = cmd->server;
528 SilcClientEntry entry;
530 for (i = 0; i < clients_count; i++) {
533 if (!entry || entry->data.registered == FALSE)
536 if (!entry->nickname || !entry->username || !entry->userinfo) {
543 old_ident = silc_command_get_ident(cmd->payload);
544 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
545 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
547 /* Send WHOIS command */
548 silc_server_packet_send(server, entry->router->connection,
549 SILC_PACKET_COMMAND, cmd->packet->flags,
550 tmpbuf->data, tmpbuf->len, TRUE);
552 /* Reprocess this packet after received reply */
553 silc_server_command_pending(server, SILC_COMMAND_WHOIS,
554 silc_command_get_ident(cmd->payload),
555 silc_server_command_destructor,
556 silc_server_command_whois,
557 silc_server_command_dup(cmd));
560 silc_command_set_ident(cmd->payload, old_ident);
562 silc_buffer_free(tmpbuf);
571 silc_server_command_whois_send_reply(SilcServerCommandContext cmd,
572 SilcClientEntry *clients,
573 uint32 clients_count,
576 SilcServer server = cmd->server;
579 SilcBuffer packet, idp, channels;
580 SilcClientEntry entry;
581 SilcCommandStatus status;
582 uint16 ident = silc_command_get_ident(cmd->payload);
583 char nh[256], uh[256];
584 unsigned char idle[4], mode[4];
585 SilcSocketConnection hsock;
588 for (i = 0; i < clients_count; i++)
589 if (clients[i]->data.registered)
592 status = SILC_STATUS_OK;
594 status = SILC_STATUS_LIST_START;
596 for (i = 0, k = 0; i < clients_count; i++) {
599 if (entry->data.registered == FALSE) {
600 if (clients_count == 1) {
601 if (entry->nickname) {
602 silc_server_command_send_status_data(cmd, SILC_COMMAND_WHOIS,
603 SILC_STATUS_ERR_NO_SUCH_NICK,
605 strlen(entry->nickname));
607 SilcBuffer idp = silc_id_payload_encode(entry->id, SILC_ID_CLIENT);
608 silc_server_command_send_status_data(cmd, SILC_COMMAND_WHOIS,
609 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID,
610 2, idp->data, idp->len);
611 silc_buffer_free(idp);
618 status = SILC_STATUS_LIST_ITEM;
620 if (clients_count > 1 && k == clients_count - 1)
621 status = SILC_STATUS_LIST_END;
623 if (count && k - 1 == count)
624 status = SILC_STATUS_LIST_END;
626 if (count && k - 1 > count)
629 /* Sanity check, however these should never fail. However, as
630 this sanity check has been added here they have failed. */
631 if (!entry->nickname || !entry->username || !entry->userinfo)
634 /* Send WHOIS reply */
635 idp = silc_id_payload_encode(entry->id, SILC_ID_CLIENT);
636 tmp = silc_argument_get_first_arg(cmd->args, NULL);
638 memset(uh, 0, sizeof(uh));
639 memset(nh, 0, sizeof(nh));
640 memset(idle, 0, sizeof(idle));
642 strncat(nh, entry->nickname, strlen(entry->nickname));
643 if (!strchr(entry->nickname, '@')) {
645 if (entry->servername) {
646 strncat(nh, entry->servername, strlen(entry->servername));
648 len = entry->router ? strlen(entry->router->server_name) :
649 strlen(server->server_name);
650 strncat(nh, entry->router ? entry->router->server_name :
651 server->server_name, len);
655 strncat(uh, entry->username, strlen(entry->username));
656 if (!strchr(entry->username, '@')) {
658 hsock = (SilcSocketConnection)entry->connection;
659 len = strlen(hsock->hostname);
660 strncat(uh, hsock->hostname, len);
663 channels = silc_server_get_client_channel_list(server, entry);
665 SILC_PUT32_MSB(entry->mode, mode);
667 if (entry->connection) {
668 SILC_PUT32_MSB((time(NULL) - entry->data.last_receive), idle);
672 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_WHOIS,
674 2, idp->data, idp->len,
678 strlen(entry->userinfo),
684 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_WHOIS,
686 2, idp->data, idp->len,
690 strlen(entry->userinfo),
694 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY,
695 0, packet->data, packet->len, FALSE);
697 silc_buffer_free(packet);
698 silc_buffer_free(idp);
700 silc_buffer_free(channels);
707 silc_server_command_whois_process(SilcServerCommandContext cmd)
709 SilcServer server = cmd->server;
710 char *nick = NULL, *server_name = NULL;
712 SilcClientEntry *clients = NULL, entry;
713 SilcClientID **client_id = NULL;
714 uint32 client_id_count = 0, clients_count = 0;
716 bool check_global = FALSE;
718 /* Protocol dictates that we must always send the received WHOIS request
719 to our router if we are normal server, so let's do it now unless we
720 are standalone. We will not send any replies to the client until we
721 have received reply from the router. */
722 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT &&
723 server->server_type == SILC_SERVER && !cmd->pending &&
724 !server->standalone) {
728 old_ident = silc_command_get_ident(cmd->payload);
729 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
730 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
732 /* Send WHOIS command to our router */
733 silc_server_packet_send(server, (SilcSocketConnection)
734 server->router->connection,
735 SILC_PACKET_COMMAND, cmd->packet->flags,
736 tmpbuf->data, tmpbuf->len, TRUE);
738 /* Reprocess this packet after received reply from router */
739 silc_server_command_pending(server, SILC_COMMAND_WHOIS,
740 silc_command_get_ident(cmd->payload),
741 silc_server_command_destructor,
742 silc_server_command_whois,
743 silc_server_command_dup(cmd));
746 silc_command_set_ident(cmd->payload, old_ident);
748 silc_buffer_free(tmpbuf);
753 /* We are ready to process the command request. Let's search for the
754 requested client and send reply to the requesting client. */
756 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT)
758 else if (server->server_type == SILC_ROUTER)
761 /* Parse the whois request */
762 if (!silc_server_command_whois_parse(cmd, &client_id, &client_id_count,
763 &nick, &server_name, &count,
767 /* Get all clients matching that ID or nickname from local list */
768 if (client_id_count) {
769 /* Check all Client ID's received in the command packet */
770 for (i = 0; i < client_id_count; i++) {
771 entry = silc_idlist_find_client_by_id(server->local_list,
773 if (!entry && check_global)
774 entry = silc_idlist_find_client_by_id(server->global_list,
777 clients = silc_realloc(clients, sizeof(*clients) *
778 (clients_count + 1));
779 clients[clients_count++] = entry;
783 if (!silc_idlist_get_clients_by_hash(server->local_list,
784 nick, server->md5hash,
785 &clients, &clients_count))
786 silc_idlist_get_clients_by_nickname(server->local_list,
788 &clients, &clients_count);
790 if (!silc_idlist_get_clients_by_hash(server->global_list,
791 nick, server->md5hash,
792 &clients, &clients_count))
793 silc_idlist_get_clients_by_nickname(server->global_list,
795 &clients, &clients_count);
800 /* Such client(s) really does not exist in the SILC network. */
801 if (!client_id_count) {
802 silc_server_command_send_status_data(cmd, SILC_COMMAND_WHOIS,
803 SILC_STATUS_ERR_NO_SUCH_NICK,
804 3, nick, strlen(nick));
806 SilcBuffer idp = silc_id_payload_encode(client_id[0], SILC_ID_CLIENT);
807 silc_server_command_send_status_data(cmd, SILC_COMMAND_WHOIS,
808 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID,
809 2, idp->data, idp->len);
810 silc_buffer_free(idp);
815 /* Router always finds the client entry if it exists in the SILC network.
816 However, it might be incomplete entry and does not include all the
817 mandatory fields that WHOIS command reply requires. Check for these and
818 make query from the server who owns the client if some fields are
820 if (!silc_server_command_whois_check(cmd, clients, clients_count)) {
825 /* Send the command reply */
826 silc_server_command_whois_send_reply(cmd, clients, clients_count,
830 if (client_id_count) {
831 for (i = 0; i < client_id_count; i++)
832 silc_free(client_id[i]);
833 silc_free(client_id);
840 silc_free(server_name);
845 /* Server side of command WHOIS. Processes user's query and sends found
846 results as command replies back to the client. */
848 SILC_SERVER_CMD_FUNC(whois)
850 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
853 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_WHOIS, cmd, 1, 3328);
855 ret = silc_server_command_whois_process(cmd);
858 silc_server_command_free(cmd);
861 /******************************************************************************
865 ******************************************************************************/
868 silc_server_command_whowas_parse(SilcServerCommandContext cmd,
876 tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
878 silc_server_command_send_status_reply(cmd, SILC_COMMAND_WHOWAS,
879 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
883 /* Get the nickname@server string and parse it. */
884 if (strchr(tmp, '@')) {
885 len = strcspn(tmp, "@");
886 *nickname = silc_calloc(len + 1, sizeof(char));
887 memcpy(*nickname, tmp, len);
888 *server_name = silc_calloc(strlen(tmp) - len, sizeof(char));
889 memcpy(*server_name, tmp + len + 1, strlen(tmp) - len - 1);
891 *nickname = strdup(tmp);
893 /* Get the max count of reply messages allowed */
894 tmp = silc_argument_get_arg_type(cmd->args, 2, NULL);
904 silc_server_command_whowas_check(SilcServerCommandContext cmd,
905 SilcClientEntry *clients,
906 uint32 clients_count)
908 SilcServer server = cmd->server;
910 SilcClientEntry entry;
912 for (i = 0; i < clients_count; i++) {
915 if (!entry->nickname || !entry->username) {
922 old_ident = silc_command_get_ident(cmd->payload);
923 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
924 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
926 /* Send WHOWAS command */
927 silc_server_packet_send(server, entry->router->connection,
928 SILC_PACKET_COMMAND, cmd->packet->flags,
929 tmpbuf->data, tmpbuf->len, TRUE);
931 /* Reprocess this packet after received reply */
932 silc_server_command_pending(server, SILC_COMMAND_WHOWAS,
933 silc_command_get_ident(cmd->payload),
934 silc_server_command_destructor,
935 silc_server_command_whowas,
936 silc_server_command_dup(cmd));
939 silc_command_set_ident(cmd->payload, old_ident);
941 silc_buffer_free(tmpbuf);
950 silc_server_command_whowas_send_reply(SilcServerCommandContext cmd,
951 SilcClientEntry *clients,
952 uint32 clients_count)
954 SilcServer server = cmd->server;
956 int i, count = 0, len;
957 SilcBuffer packet, idp;
958 SilcClientEntry entry = NULL;
959 SilcCommandStatus status;
960 uint16 ident = silc_command_get_ident(cmd->payload);
962 char nh[256], uh[256];
964 status = SILC_STATUS_OK;
965 if (clients_count > 1)
966 status = SILC_STATUS_LIST_START;
968 for (i = 0; i < clients_count; i++) {
971 /* We will take only clients that are not valid anymore. They are the
972 ones that are not registered anymore but still have a ID. They
973 have disconnected us, and thus valid for WHOWAS. */
974 if (entry->data.registered == TRUE)
976 if (entry->id == NULL)
979 if (count && i - 1 == count)
984 if (clients_count > 2)
985 status = SILC_STATUS_LIST_ITEM;
987 if (clients_count > 1 && i == clients_count - 1)
988 status = SILC_STATUS_LIST_END;
990 /* Sanity check, however these should never fail. However, as
991 this sanity check has been added here they have failed. */
992 if (!entry->nickname || !entry->username)
995 /* Send WHOWAS reply */
996 idp = silc_id_payload_encode(entry->id, SILC_ID_CLIENT);
997 tmp = silc_argument_get_first_arg(cmd->args, NULL);
999 memset(uh, 0, sizeof(uh));
1000 memset(nh, 0, sizeof(nh));
1002 strncat(nh, entry->nickname, strlen(entry->nickname));
1003 if (!strchr(entry->nickname, '@')) {
1004 strncat(nh, "@", 1);
1005 if (entry->servername) {
1006 strncat(nh, entry->servername, strlen(entry->servername));
1008 len = entry->router ? strlen(entry->router->server_name) :
1009 strlen(server->server_name);
1010 strncat(nh, entry->router ? entry->router->server_name :
1011 server->server_name, len);
1015 strncat(uh, entry->username, strlen(entry->username));
1016 if (!strchr(entry->username, '@')) {
1017 strncat(uh, "@", 1);
1018 strcat(uh, "*private*");
1021 if (entry->userinfo)
1023 silc_command_reply_payload_encode_va(SILC_COMMAND_WHOWAS,
1025 2, idp->data, idp->len,
1029 strlen(entry->userinfo));
1032 silc_command_reply_payload_encode_va(SILC_COMMAND_WHOWAS,
1034 2, idp->data, idp->len,
1038 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY,
1039 0, packet->data, packet->len, FALSE);
1041 silc_buffer_free(packet);
1042 silc_buffer_free(idp);
1045 if (found == FALSE && entry)
1046 silc_server_command_send_status_data(cmd, SILC_COMMAND_WHOWAS,
1047 SILC_STATUS_ERR_NO_SUCH_NICK,
1049 strlen(entry->nickname));
1053 silc_server_command_whowas_process(SilcServerCommandContext cmd)
1055 SilcServer server = cmd->server;
1056 char *nick = NULL, *server_name = NULL;
1058 SilcClientEntry *clients = NULL;
1059 uint32 clients_count = 0;
1061 bool check_global = FALSE;
1063 /* Protocol dictates that we must always send the received WHOWAS request
1064 to our router if we are normal server, so let's do it now unless we
1065 are standalone. We will not send any replies to the client until we
1066 have received reply from the router. */
1067 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT &&
1068 server->server_type == SILC_SERVER && !cmd->pending &&
1069 !server->standalone) {
1073 old_ident = silc_command_get_ident(cmd->payload);
1074 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
1075 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
1077 /* Send WHOWAS command to our router */
1078 silc_server_packet_send(server, (SilcSocketConnection)
1079 server->router->connection,
1080 SILC_PACKET_COMMAND, cmd->packet->flags,
1081 tmpbuf->data, tmpbuf->len, TRUE);
1083 /* Reprocess this packet after received reply from router */
1084 silc_server_command_pending(server, SILC_COMMAND_WHOWAS,
1085 silc_command_get_ident(cmd->payload),
1086 silc_server_command_destructor,
1087 silc_server_command_whowas,
1088 silc_server_command_dup(cmd));
1089 cmd->pending = TRUE;
1091 silc_command_set_ident(cmd->payload, old_ident);
1093 silc_buffer_free(tmpbuf);
1098 /* We are ready to process the command request. Let's search for the
1099 requested client and send reply to the requesting client. */
1101 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT)
1102 check_global = TRUE;
1103 else if (server->server_type == SILC_ROUTER)
1104 check_global = TRUE;
1106 /* Parse the whowas request */
1107 if (!silc_server_command_whowas_parse(cmd, &nick, &server_name, &count))
1110 /* Get all clients matching that nickname from local list */
1111 if (!silc_idlist_get_clients_by_nickname(server->local_list,
1113 &clients, &clients_count))
1114 silc_idlist_get_clients_by_hash(server->local_list,
1115 nick, server->md5hash,
1116 &clients, &clients_count);
1118 /* Check global list as well */
1120 if (!silc_idlist_get_clients_by_nickname(server->global_list,
1122 &clients, &clients_count))
1123 silc_idlist_get_clients_by_hash(server->global_list,
1124 nick, server->md5hash,
1125 &clients, &clients_count);
1129 /* Such a client really does not exist in the SILC network. */
1130 silc_server_command_send_status_data(cmd, SILC_COMMAND_WHOWAS,
1131 SILC_STATUS_ERR_NO_SUCH_NICK,
1132 3, nick, strlen(nick));
1136 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT &&
1137 !silc_server_command_whowas_check(cmd, clients, clients_count)) {
1142 /* Send the command reply to the client */
1143 silc_server_command_whowas_send_reply(cmd, clients, clients_count);
1151 silc_free(server_name);
1156 /* Server side of command WHOWAS. */
1158 SILC_SERVER_CMD_FUNC(whowas)
1160 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
1163 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_WHOWAS, cmd, 1, 2);
1165 ret = silc_server_command_whowas_process(cmd);
1168 silc_server_command_free(cmd);
1171 /******************************************************************************
1175 ******************************************************************************/
1178 silc_server_command_identify_parse(SilcServerCommandContext cmd,
1179 SilcClientEntry **clients,
1180 uint32 *clients_count,
1181 SilcServerEntry **servers,
1182 uint32 *servers_count,
1183 SilcChannelEntry **channels,
1184 uint32 *channels_count,
1187 SilcServer server = cmd->server;
1190 uint32 argc = silc_argument_get_arg_num(cmd->args);
1192 bool check_global = FALSE;
1197 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT)
1198 check_global = TRUE;
1199 else if (server->server_type == SILC_ROUTER)
1200 check_global = TRUE;
1202 /* If ID Payload is in the command it must be used instead of names */
1203 tmp = silc_argument_get_arg_type(cmd->args, 5, &len);
1205 /* No ID, get the names. */
1207 /* Try to get nickname@server. */
1208 tmp = silc_argument_get_arg_type(cmd->args, 1, NULL);
1211 char *nick_server = NULL;
1213 if (strchr(tmp, '@')) {
1214 len = strcspn(tmp, "@");
1215 nick = silc_calloc(len + 1, sizeof(char));
1216 memcpy(nick, tmp, len);
1217 nick_server = silc_calloc(strlen(tmp) - len, sizeof(char));
1218 memcpy(nick_server, tmp + len + 1, strlen(tmp) - len - 1);
1223 if (!silc_idlist_get_clients_by_hash(server->local_list,
1224 nick, server->md5hash,
1225 clients, clients_count))
1226 silc_idlist_get_clients_by_nickname(server->local_list,
1228 clients, clients_count);
1230 if (!silc_idlist_get_clients_by_hash(server->global_list,
1231 nick, server->md5hash,
1232 clients, clients_count))
1233 silc_idlist_get_clients_by_nickname(server->global_list,
1235 clients, clients_count);
1239 silc_free(nick_server);
1242 silc_server_command_send_status_data(cmd, SILC_COMMAND_IDENTIFY,
1243 SILC_STATUS_ERR_NO_SUCH_NICK,
1244 3, tmp, strlen(tmp));
1249 /* Try to get server name */
1250 tmp = silc_argument_get_arg_type(cmd->args, 2, NULL);
1252 entry = silc_idlist_find_server_by_name(server->local_list,
1254 if (!entry && check_global)
1255 entry = silc_idlist_find_server_by_name(server->local_list,
1258 *servers = silc_realloc(*servers, sizeof(**servers) *
1259 (*servers_count + 1));
1260 (*servers)[(*servers_count)++] = entry;
1264 silc_server_command_send_status_data(cmd, SILC_COMMAND_IDENTIFY,
1265 SILC_STATUS_ERR_NO_SUCH_SERVER,
1266 3, tmp, strlen(tmp));
1271 /* Try to get channel name */
1272 tmp = silc_argument_get_arg_type(cmd->args, 3, NULL);
1274 entry = silc_idlist_find_channel_by_name(server->local_list,
1276 if (!entry && check_global)
1277 entry = silc_idlist_find_channel_by_name(server->local_list,
1280 *channels = silc_realloc(*channels, sizeof(**channels) *
1281 (*channels_count + 1));
1282 (*channels)[(*channels_count)++] = entry;
1286 silc_server_command_send_status_data(cmd, SILC_COMMAND_IDENTIFY,
1287 SILC_STATUS_ERR_NO_SUCH_CHANNEL,
1288 3, tmp, strlen(tmp));
1293 if (!(*clients) && !(*servers) && !(*channels)) {
1294 silc_server_command_send_status_reply(cmd, SILC_COMMAND_IDENTIFY,
1295 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
1299 /* Command includes ID, we must use that. Also check whether the command
1300 has more than one ID set - take them all. */
1302 /* Take all ID's from the command packet */
1303 for (i = 0; i < argc; i++) {
1306 tmp = silc_argument_get_arg_type(cmd->args, i + 5, &len);
1310 idp = silc_id_payload_parse_data(tmp, len);
1312 silc_free(*clients);
1313 silc_free(*servers);
1314 silc_free(*channels);
1315 silc_server_command_send_status_reply(cmd, SILC_COMMAND_IDENTIFY,
1316 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
1320 id = silc_id_payload_get_id(idp);
1322 switch (silc_id_payload_get_type(idp)) {
1324 case SILC_ID_CLIENT:
1325 entry = (void *)silc_idlist_find_client_by_id(server->local_list,
1327 if (!entry && check_global)
1328 entry = (void *)silc_idlist_find_client_by_id(server->global_list,
1331 *clients = silc_realloc(*clients, sizeof(**clients) *
1332 (*clients_count + 1));
1333 (*clients)[(*clients_count)++] = (SilcClientEntry)entry;
1335 silc_server_command_send_status_data(cmd, SILC_COMMAND_IDENTIFY,
1336 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID,
1343 case SILC_ID_SERVER:
1344 entry = (void *)silc_idlist_find_server_by_id(server->local_list,
1346 if (!entry && check_global)
1347 entry = (void *)silc_idlist_find_server_by_id(server->global_list,
1350 *servers = silc_realloc(*servers, sizeof(**servers) *
1351 (*servers_count + 1));
1352 (*servers)[(*servers_count)++] = (SilcServerEntry)entry;
1354 silc_server_command_send_status_data(cmd, SILC_COMMAND_IDENTIFY,
1355 SILC_STATUS_ERR_NO_SUCH_SERVER_ID,
1361 case SILC_ID_CHANNEL:
1362 entry = (void *)silc_idlist_find_channel_by_id(server->local_list,
1364 if (!entry && check_global)
1365 entry = (void *)silc_idlist_find_channel_by_id(server->global_list,
1368 *channels = silc_realloc(*channels, sizeof(**channels) *
1369 (*channels_count + 1));
1370 (*channels)[(*channels_count)++] = (SilcChannelEntry)entry;
1372 silc_server_command_send_status_data(cmd, SILC_COMMAND_IDENTIFY,
1373 SILC_STATUS_ERR_NO_SUCH_CHANNEL_ID,
1385 silc_free(*clients);
1386 silc_free(*servers);
1387 silc_free(*channels);
1391 /* Get the max count of reply messages allowed */
1392 tmp = silc_argument_get_arg_type(cmd->args, 4, NULL);
1401 /* Checks that all mandatory fields in client entry are present. If not
1402 then send WHOIS request to the server who owns the client. We use
1403 WHOIS because we want to get as much information as possible at once. */
1406 silc_server_command_identify_check_client(SilcServerCommandContext cmd,
1407 SilcClientEntry *clients,
1408 uint32 clients_count)
1410 SilcServer server = cmd->server;
1412 SilcClientEntry entry;
1414 for (i = 0; i < clients_count; i++) {
1417 if (!entry || entry->data.registered == FALSE)
1420 if (!entry->nickname) {
1427 old_ident = silc_command_get_ident(cmd->payload);
1428 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
1429 silc_command_set_command(cmd->payload, SILC_COMMAND_WHOIS);
1430 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
1432 /* Send WHOIS request. We send WHOIS since we're doing the requesting
1433 now anyway so make it a good one. */
1434 silc_server_packet_send(server, entry->router->connection,
1435 SILC_PACKET_COMMAND, cmd->packet->flags,
1436 tmpbuf->data, tmpbuf->len, TRUE);
1438 /* Reprocess this packet after received reply */
1439 silc_server_command_pending(server, SILC_COMMAND_WHOIS,
1440 silc_command_get_ident(cmd->payload),
1441 silc_server_command_destructor,
1442 silc_server_command_identify,
1443 silc_server_command_dup(cmd));
1445 cmd->pending = TRUE;
1447 /* Put old data back to the Command Payload we just changed */
1448 silc_command_set_ident(cmd->payload, old_ident);
1449 silc_command_set_command(cmd->payload, SILC_COMMAND_IDENTIFY);
1451 silc_buffer_free(tmpbuf);
1460 silc_server_command_identify_send_reply(SilcServerCommandContext cmd,
1461 SilcClientEntry *clients,
1462 uint32 clients_count,
1463 SilcServerEntry *servers,
1464 uint32 servers_count,
1465 SilcChannelEntry *channels,
1466 uint32 channels_count,
1469 SilcServer server = cmd->server;
1471 SilcBuffer packet, idp;
1472 SilcCommandStatus status;
1473 uint16 ident = silc_command_get_ident(cmd->payload);
1474 char nh[256], uh[256];
1475 SilcSocketConnection hsock;
1477 status = SILC_STATUS_OK;
1480 SilcClientEntry entry;
1483 for (i = 0; i < clients_count; i++)
1484 if (clients[i]->data.registered)
1488 status = SILC_STATUS_LIST_START;
1490 for (i = 0, k = 0; i < clients_count; i++) {
1493 if (entry->data.registered == FALSE) {
1494 if (clients_count == 1) {
1495 SilcBuffer idp = silc_id_payload_encode(entry->id, SILC_ID_CLIENT);
1496 silc_server_command_send_status_data(cmd, SILC_COMMAND_IDENTIFY,
1497 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID,
1498 2, idp->data, idp->len);
1499 silc_buffer_free(idp);
1505 status = SILC_STATUS_LIST_ITEM;
1506 if (clients_count > 1 && k == clients_count - 1
1507 && !servers_count && !channels_count)
1508 status = SILC_STATUS_LIST_END;
1509 if (count && k - 1 == count)
1510 status = SILC_STATUS_LIST_END;
1511 if (count && k - 1 > count)
1514 /* Send IDENTIFY reply */
1515 idp = silc_id_payload_encode(entry->id, SILC_ID_CLIENT);
1517 memset(uh, 0, sizeof(uh));
1518 memset(nh, 0, sizeof(nh));
1520 strncat(nh, entry->nickname, strlen(entry->nickname));
1521 if (!strchr(entry->nickname, '@')) {
1522 strncat(nh, "@", 1);
1523 if (entry->servername) {
1524 strncat(nh, entry->servername, strlen(entry->servername));
1526 len = entry->router ? strlen(entry->router->server_name) :
1527 strlen(server->server_name);
1528 strncat(nh, entry->router ? entry->router->server_name :
1529 server->server_name, len);
1533 if (!entry->username) {
1534 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_IDENTIFY,
1536 2, idp->data, idp->len,
1539 strncat(uh, entry->username, strlen(entry->username));
1540 if (!strchr(entry->username, '@')) {
1541 strncat(uh, "@", 1);
1542 hsock = (SilcSocketConnection)entry->connection;
1543 len = strlen(hsock->hostname);
1544 strncat(uh, hsock->hostname, len);
1547 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_IDENTIFY,
1549 2, idp->data, idp->len,
1554 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY,
1555 0, packet->data, packet->len, FALSE);
1557 silc_buffer_free(packet);
1558 silc_buffer_free(idp);
1564 status = (status == SILC_STATUS_LIST_ITEM ?
1565 SILC_STATUS_LIST_ITEM : SILC_STATUS_OK);
1568 SilcServerEntry entry;
1570 if (status == SILC_STATUS_OK && servers_count > 1)
1571 status = SILC_STATUS_LIST_START;
1573 for (i = 0, k = 0; i < servers_count; i++) {
1577 status = SILC_STATUS_LIST_ITEM;
1578 if (servers_count > 1 && k == servers_count - 1 && !channels_count)
1579 status = SILC_STATUS_LIST_END;
1580 if (count && k - 1 == count)
1581 status = SILC_STATUS_LIST_END;
1582 if (count && k - 1 > count)
1585 /* Send IDENTIFY reply */
1586 idp = silc_id_payload_encode(entry->id, SILC_ID_SERVER);
1587 if (entry->server_name) {
1589 silc_command_reply_payload_encode_va(SILC_COMMAND_IDENTIFY,
1591 2, idp->data, idp->len,
1592 3, entry->server_name,
1593 strlen(entry->server_name));
1595 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_IDENTIFY,
1597 2, idp->data, idp->len);
1600 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY,
1601 0, packet->data, packet->len, FALSE);
1603 silc_buffer_free(packet);
1604 silc_buffer_free(idp);
1610 status = (status == SILC_STATUS_LIST_ITEM ?
1611 SILC_STATUS_LIST_ITEM : SILC_STATUS_OK);
1614 SilcChannelEntry entry;
1616 if (status == SILC_STATUS_OK && channels_count > 1)
1617 status = SILC_STATUS_LIST_START;
1619 for (i = 0, k = 0; i < channels_count; i++) {
1620 entry = channels[i];
1623 status = SILC_STATUS_LIST_ITEM;
1624 if (channels_count > 1 && k == channels_count - 1)
1625 status = SILC_STATUS_LIST_END;
1626 if (count && k - 1 == count)
1627 status = SILC_STATUS_LIST_END;
1628 if (count && k - 1 > count)
1631 /* Send IDENTIFY reply */
1632 idp = silc_id_payload_encode(entry->id, SILC_ID_CHANNEL);
1633 if (entry->channel_name) {
1635 silc_command_reply_payload_encode_va(SILC_COMMAND_IDENTIFY,
1637 2, idp->data, idp->len,
1638 3, entry->channel_name,
1639 strlen(entry->channel_name));
1641 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_IDENTIFY,
1643 2, idp->data, idp->len);
1646 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY,
1647 0, packet->data, packet->len, FALSE);
1649 silc_buffer_free(packet);
1650 silc_buffer_free(idp);
1658 silc_server_command_identify_process(SilcServerCommandContext cmd)
1660 SilcServer server = cmd->server;
1663 SilcClientEntry *clients = NULL;
1664 SilcServerEntry *servers = NULL;
1665 SilcChannelEntry *channels = NULL;
1666 uint32 clients_count = 0, servers_count = 0, channels_count = 0;
1668 /* Protocol dictates that we must always send the received IDENTIFY request
1669 to our router if we are normal server, so let's do it now unless we
1670 are standalone. We will not send any replies to the client until we
1671 have received reply from the router. */
1672 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT &&
1673 server->server_type == SILC_SERVER && !cmd->pending &&
1674 !server->standalone) {
1678 old_ident = silc_command_get_ident(cmd->payload);
1679 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
1680 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
1682 /* Send IDENTIFY command to our router */
1683 silc_server_packet_send(server, (SilcSocketConnection)
1684 server->router->connection,
1685 SILC_PACKET_COMMAND, cmd->packet->flags,
1686 tmpbuf->data, tmpbuf->len, TRUE);
1688 /* Reprocess this packet after received reply from router */
1689 silc_server_command_pending(server, SILC_COMMAND_IDENTIFY,
1690 silc_command_get_ident(cmd->payload),
1691 silc_server_command_destructor,
1692 silc_server_command_identify,
1693 silc_server_command_dup(cmd));
1694 cmd->pending = TRUE;
1696 silc_command_set_ident(cmd->payload, old_ident);
1698 silc_buffer_free(tmpbuf);
1703 /* We are ready to process the command request. Let's search for the
1704 requested client and send reply to the requesting client. */
1706 /* Parse the IDENTIFY request */
1707 if (!silc_server_command_identify_parse(cmd,
1708 &clients, &clients_count,
1709 &servers, &servers_count,
1710 &channels, &channels_count,
1714 /* Check that all mandatory fields are present and request those data
1715 from the server who owns the client if necessary. */
1716 if (clients && !silc_server_command_identify_check_client(cmd, clients,
1722 /* Send the command reply to the client */
1723 silc_server_command_identify_send_reply(cmd,
1724 clients, clients_count,
1725 servers, servers_count,
1726 channels, channels_count,
1732 silc_free(channels);
1737 SILC_SERVER_CMD_FUNC(identify)
1739 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
1742 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_IDENTIFY, cmd, 1, 3328);
1744 ret = silc_server_command_identify_process(cmd);
1747 silc_server_command_free(cmd);
1750 /* Checks string for bad characters and returns TRUE if they are found. */
1752 static int silc_server_command_bad_chars(char *nick)
1754 if (strchr(nick, '\\')) return TRUE;
1755 if (strchr(nick, '\"')) return TRUE;
1756 if (strchr(nick, '´')) return TRUE;
1757 if (strchr(nick, '`')) return TRUE;
1758 if (strchr(nick, '\'')) return TRUE;
1759 if (strchr(nick, '*')) return TRUE;
1760 if (strchr(nick, '/')) return TRUE;
1761 if (strchr(nick, '@')) return TRUE;
1766 /* Server side of command NICK. Sets nickname for user. Setting
1767 nickname causes generation of a new client ID for the client. The
1768 new client ID is sent to the client after changing the nickname. */
1770 SILC_SERVER_CMD_FUNC(nick)
1772 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
1773 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
1774 SilcServer server = cmd->server;
1775 SilcBuffer packet, nidp, oidp;
1776 SilcClientID *new_id;
1778 uint16 ident = silc_command_get_ident(cmd->payload);
1780 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
1783 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_NICK, cmd, 1, 1);
1785 /* Check nickname */
1786 nick = silc_argument_get_arg_type(cmd->args, 1, NULL);
1787 if (silc_server_command_bad_chars(nick) == TRUE) {
1788 silc_server_command_send_status_reply(cmd, SILC_COMMAND_NICK,
1789 SILC_STATUS_ERR_BAD_NICKNAME);
1793 if (strlen(nick) > 128)
1796 /* Create new Client ID */
1797 silc_id_create_client_id(cmd->server->id, cmd->server->rng,
1798 cmd->server->md5hash, nick,
1801 /* Send notify about nickname change to our router. We send the new
1802 ID and ask to replace it with the old one. If we are router the
1803 packet is broadcasted. Send NICK_CHANGE notify. */
1804 if (!server->standalone)
1805 silc_server_send_notify_nick_change(server, server->router->connection,
1806 server->server_type == SILC_SERVER ?
1807 FALSE : TRUE, client->id,
1810 /* Remove old cache entry */
1811 silc_idcache_del_by_context(server->local_list->clients, client);
1813 oidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
1817 silc_free(client->id);
1819 /* Save the nickname as this client is our local client */
1820 if (client->nickname)
1821 silc_free(client->nickname);
1823 client->nickname = strdup(nick);
1824 client->id = new_id;
1826 /* Update client cache */
1827 silc_idcache_add(server->local_list->clients, client->nickname,
1828 client->id, (void *)client, FALSE);
1830 nidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
1832 /* Send NICK_CHANGE notify to the client's channels */
1833 silc_server_send_notify_on_channels(server, NULL, client,
1834 SILC_NOTIFY_TYPE_NICK_CHANGE, 2,
1835 oidp->data, oidp->len,
1836 nidp->data, nidp->len);
1838 /* Send the new Client ID as reply command back to client */
1839 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_NICK,
1840 SILC_STATUS_OK, ident, 1,
1841 2, nidp->data, nidp->len);
1842 silc_server_packet_send(cmd->server, cmd->sock, SILC_PACKET_COMMAND_REPLY,
1843 0, packet->data, packet->len, FALSE);
1845 silc_buffer_free(packet);
1846 silc_buffer_free(nidp);
1847 silc_buffer_free(oidp);
1850 silc_server_command_free(cmd);
1853 /* Sends the LIST command reply */
1856 silc_server_command_list_send_reply(SilcServerCommandContext cmd,
1857 SilcChannelEntry *lch,
1859 SilcChannelEntry *gch,
1863 SilcBuffer packet, idp;
1864 SilcChannelEntry entry;
1865 SilcCommandStatus status;
1866 uint16 ident = silc_command_get_ident(cmd->payload);
1868 unsigned char usercount[4];
1871 for (i = 0; i < lch_count; i++)
1872 if (lch[i]->mode & SILC_CHANNEL_MODE_SECRET)
1874 for (i = 0; i < gch_count; i++)
1875 if (gch[i]->mode & SILC_CHANNEL_MODE_SECRET)
1878 status = SILC_STATUS_OK;
1879 if ((lch_count + gch_count) > 1)
1880 status = SILC_STATUS_LIST_START;
1883 for (i = 0; i < lch_count; i++) {
1890 status = SILC_STATUS_LIST_ITEM;
1892 if (i == lch_count - 1 && gch_count)
1894 if (lch_count > 1 && i == lch_count - 1)
1895 status = SILC_STATUS_LIST_END;
1897 idp = silc_id_payload_encode(entry->id, SILC_ID_CHANNEL);
1899 if (entry->mode & SILC_CHANNEL_MODE_PRIVATE) {
1900 topic = "*private*";
1901 memset(usercount, 0, sizeof(usercount));
1903 topic = entry->topic;
1904 users = silc_hash_table_count(entry->user_list);
1905 SILC_PUT32_MSB(users, usercount);
1908 /* Send the reply */
1911 silc_command_reply_payload_encode_va(SILC_COMMAND_LIST,
1913 2, idp->data, idp->len,
1914 3, entry->channel_name,
1915 strlen(entry->channel_name),
1916 4, topic, strlen(topic),
1920 silc_command_reply_payload_encode_va(SILC_COMMAND_LIST,
1922 2, idp->data, idp->len,
1923 3, entry->channel_name,
1924 strlen(entry->channel_name),
1926 silc_server_packet_send(cmd->server, cmd->sock,
1927 SILC_PACKET_COMMAND_REPLY, 0, packet->data,
1928 packet->len, FALSE);
1929 silc_buffer_free(packet);
1930 silc_buffer_free(idp);
1933 status = i ? SILC_STATUS_LIST_ITEM : SILC_STATUS_OK;
1936 for (i = 0; i < gch_count; i++) {
1943 status = SILC_STATUS_LIST_ITEM;
1945 if (gch_count > 1 && i == lch_count - 1)
1946 status = SILC_STATUS_LIST_END;
1948 idp = silc_id_payload_encode(entry->id, SILC_ID_CHANNEL);
1950 if (entry->mode & SILC_CHANNEL_MODE_PRIVATE) {
1951 topic = "*private*";
1952 memset(usercount, 0, sizeof(usercount));
1954 topic = entry->topic;
1955 users = silc_hash_table_count(entry->user_list);
1956 SILC_PUT32_MSB(users, usercount);
1959 /* Send the reply */
1962 silc_command_reply_payload_encode_va(SILC_COMMAND_LIST,
1964 2, idp->data, idp->len,
1965 3, entry->channel_name,
1966 strlen(entry->channel_name),
1967 4, topic, strlen(topic),
1971 silc_command_reply_payload_encode_va(SILC_COMMAND_LIST,
1973 2, idp->data, idp->len,
1974 3, entry->channel_name,
1975 strlen(entry->channel_name),
1977 silc_server_packet_send(cmd->server, cmd->sock,
1978 SILC_PACKET_COMMAND_REPLY, 0, packet->data,
1979 packet->len, FALSE);
1980 silc_buffer_free(packet);
1981 silc_buffer_free(idp);
1985 /* Server side of LIST command. This lists the channel of the requested
1986 server. Secret channels are not listed. */
1988 SILC_SERVER_CMD_FUNC(list)
1990 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
1991 SilcServer server = cmd->server;
1992 SilcChannelID *channel_id = NULL;
1995 SilcChannelEntry *lchannels = NULL, *gchannels = NULL;
1996 uint32 lch_count = 0, gch_count = 0;
1998 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_LIST, cmd, 0, 2);
2000 /* Get Channel ID */
2001 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
2003 channel_id = silc_id_payload_parse_id(tmp, tmp_len);
2005 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LIST,
2006 SILC_STATUS_ERR_NO_CHANNEL_ID);
2011 /* Get the channels from local list */
2012 lchannels = silc_idlist_get_channels(server->local_list, channel_id,
2015 /* Get the channels from global list if we are router */
2016 if (server->server_type == SILC_ROUTER)
2017 gchannels = silc_idlist_get_channels(server->global_list, channel_id,
2020 /* Send the reply */
2021 silc_server_command_list_send_reply(cmd, lchannels, lch_count,
2022 gchannels, gch_count);
2025 silc_server_command_free(cmd);
2028 /* Server side of TOPIC command. Sets topic for channel and/or returns
2029 current topic to client. */
2031 SILC_SERVER_CMD_FUNC(topic)
2033 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2034 SilcServer server = cmd->server;
2035 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
2036 SilcChannelID *channel_id;
2037 SilcChannelEntry channel;
2038 SilcChannelClientEntry chl;
2039 SilcBuffer packet, idp;
2041 uint32 argc, tmp_len;
2042 uint16 ident = silc_command_get_ident(cmd->payload);
2044 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_TOPIC, cmd, 1, 2);
2046 argc = silc_argument_get_arg_num(cmd->args);
2048 /* Get Channel ID */
2049 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
2051 silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
2052 SILC_STATUS_ERR_NO_CHANNEL_ID);
2055 channel_id = silc_id_payload_parse_id(tmp, tmp_len);
2057 silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
2058 SILC_STATUS_ERR_NO_CHANNEL_ID);
2062 /* Check whether the channel exists */
2063 channel = silc_idlist_find_channel_by_id(server->local_list,
2066 channel = silc_idlist_find_channel_by_id(server->global_list,
2069 silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
2070 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
2077 tmp = silc_argument_get_arg_type(cmd->args, 2, NULL);
2079 silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
2080 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
2084 if (strlen(tmp) > 256) {
2085 silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
2086 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
2090 /* See whether the client is on channel and has rights to change topic */
2091 if (!silc_hash_table_find(channel->user_list, client, NULL,
2093 silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
2094 SILC_STATUS_ERR_NOT_ON_CHANNEL);
2098 if (chl->mode == SILC_CHANNEL_UMODE_NONE) {
2099 if (channel->mode & SILC_CHANNEL_MODE_TOPIC) {
2100 silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
2101 SILC_STATUS_ERR_NO_CHANNEL_PRIV);
2106 /* Set the topic for channel */
2108 silc_free(channel->topic);
2109 channel->topic = strdup(tmp);
2111 /* Send TOPIC_SET notify type to the network */
2112 if (!server->standalone)
2113 silc_server_send_notify_topic_set(server, server->router->connection,
2114 server->server_type == SILC_ROUTER ?
2115 TRUE : FALSE, channel, client->id,
2118 idp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
2120 /* Send notify about topic change to all clients on the channel */
2121 silc_server_send_notify_to_channel(server, NULL, channel, TRUE,
2122 SILC_NOTIFY_TYPE_TOPIC_SET, 2,
2123 idp->data, idp->len,
2124 channel->topic, strlen(channel->topic));
2125 silc_buffer_free(idp);
2128 /* Send the topic to client as reply packet */
2129 idp = silc_id_payload_encode(channel_id, SILC_ID_CHANNEL);
2131 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_TOPIC,
2132 SILC_STATUS_OK, ident, 2,
2133 2, idp->data, idp->len,
2135 strlen(channel->topic));
2137 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_TOPIC,
2138 SILC_STATUS_OK, ident, 1,
2139 2, idp->data, idp->len);
2140 silc_server_packet_send(cmd->server, cmd->sock, SILC_PACKET_COMMAND_REPLY,
2141 0, packet->data, packet->len, FALSE);
2143 silc_buffer_free(packet);
2144 silc_buffer_free(idp);
2145 silc_free(channel_id);
2148 silc_server_command_free(cmd);
2151 /* Server side of INVITE command. Invites some client to join some channel.
2152 This command is also used to manage the invite list of the channel. */
2154 SILC_SERVER_CMD_FUNC(invite)
2156 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2157 SilcServer server = cmd->server;
2158 SilcSocketConnection sock = cmd->sock, dest_sock;
2159 SilcChannelClientEntry chl;
2160 SilcClientEntry sender, dest;
2161 SilcClientID *dest_id = NULL;
2162 SilcChannelEntry channel;
2163 SilcChannelID *channel_id = NULL;
2164 SilcIDListData idata;
2165 SilcBuffer idp, idp2, packet;
2166 unsigned char *tmp, *add, *del;
2168 uint16 ident = silc_command_get_ident(cmd->payload);
2170 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_INVITE, cmd, 1, 4);
2172 /* Get Channel ID */
2173 tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
2175 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
2176 SILC_STATUS_ERR_NO_CHANNEL_ID);
2179 channel_id = silc_id_payload_parse_id(tmp, len);
2181 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
2182 SILC_STATUS_ERR_NO_CHANNEL_ID);
2186 /* Get the channel entry */
2187 channel = silc_idlist_find_channel_by_id(server->local_list,
2190 channel = silc_idlist_find_channel_by_id(server->global_list,
2193 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
2194 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
2199 /* Check whether the sender of this command is on the channel. */
2200 sender = (SilcClientEntry)sock->user_data;
2201 if (!silc_server_client_on_channel(sender, channel)) {
2202 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
2203 SILC_STATUS_ERR_NOT_ON_CHANNEL);
2207 /* Check whether the channel is invite-only channel. If yes then the
2208 sender of this command must be at least channel operator. */
2209 if (channel->mode & SILC_CHANNEL_MODE_INVITE) {
2210 silc_hash_table_find(channel->user_list, sender, NULL, (void *)&chl);
2211 if (chl->mode == SILC_CHANNEL_UMODE_NONE) {
2212 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
2213 SILC_STATUS_ERR_NO_CHANNEL_PRIV);
2218 /* Get destination client ID */
2219 tmp = silc_argument_get_arg_type(cmd->args, 2, &len);
2223 dest_id = silc_id_payload_parse_id(tmp, len);
2225 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
2226 SILC_STATUS_ERR_NO_CLIENT_ID);
2230 /* Get the client entry */
2231 dest = silc_server_get_client_resolve(server, dest_id);
2233 if (server->server_type == SILC_ROUTER) {
2234 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
2235 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID);
2239 /* The client info is being resolved. Reprocess this packet after
2240 receiving the reply to the query. */
2241 silc_server_command_pending(server, SILC_COMMAND_WHOIS,
2243 silc_server_command_destructor,
2244 silc_server_command_invite,
2245 silc_server_command_dup(cmd));
2246 cmd->pending = TRUE;
2247 silc_free(channel_id);
2252 /* Check whether the requested client is already on the channel. */
2253 if (silc_server_client_on_channel(dest, channel)) {
2254 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
2255 SILC_STATUS_ERR_USER_ON_CHANNEL);
2259 /* Get route to the client */
2260 dest_sock = silc_server_get_client_route(server, NULL, 0, dest_id, &idata);
2262 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
2263 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID);
2267 memset(invite, 0, sizeof(invite));
2268 strncat(invite, dest->nickname, strlen(dest->nickname));
2269 strncat(invite, "!", 1);
2270 strncat(invite, dest->username, strlen(dest->username));
2271 if (!strchr(dest->username, '@')) {
2272 strncat(invite, "@", 1);
2273 strncat(invite, cmd->sock->hostname, strlen(cmd->sock->hostname));
2276 len = strlen(invite);
2277 if (!channel->invite_list)
2278 channel->invite_list = silc_calloc(len + 2,
2279 sizeof(*channel->invite_list));
2281 channel->invite_list = silc_realloc(channel->invite_list,
2282 sizeof(*channel->invite_list) *
2284 strlen(channel->invite_list) + 2));
2285 strncat(channel->invite_list, invite, len);
2286 strncat(channel->invite_list, ",", 1);
2288 /* Send notify to the client that is invited to the channel */
2289 idp = silc_id_payload_encode(channel_id, SILC_ID_CHANNEL);
2290 idp2 = silc_id_payload_encode(sender->id, SILC_ID_CLIENT);
2291 silc_server_send_notify_dest(server, dest_sock, FALSE, dest_id,
2293 SILC_NOTIFY_TYPE_INVITE, 3,
2294 idp->data, idp->len,
2295 channel->channel_name,
2296 strlen(channel->channel_name),
2297 idp2->data, idp2->len);
2298 silc_buffer_free(idp);
2299 silc_buffer_free(idp2);
2302 /* Add the client to the invite list of the channel */
2303 add = silc_argument_get_arg_type(cmd->args, 3, &len);
2305 if (!channel->invite_list)
2306 channel->invite_list = silc_calloc(len + 2,
2307 sizeof(*channel->invite_list));
2309 channel->invite_list = silc_realloc(channel->invite_list,
2310 sizeof(*channel->invite_list) *
2312 strlen(channel->invite_list) + 2));
2313 if (add[len - 1] == ',')
2314 add[len - 1] = '\0';
2316 strncat(channel->invite_list, add, len);
2317 strncat(channel->invite_list, ",", 1);
2320 /* Get the invite to be removed and remove it from the list */
2321 del = silc_argument_get_arg_type(cmd->args, 4, &len);
2322 if (del && channel->invite_list) {
2323 char *start, *end, *n;
2325 if (!strncmp(channel->invite_list, del,
2326 strlen(channel->invite_list) - 1)) {
2327 silc_free(channel->invite_list);
2328 channel->invite_list = NULL;
2330 start = strstr(channel->invite_list, del);
2331 if (start && strlen(start) >= len) {
2333 n = silc_calloc(strlen(channel->invite_list) - len, sizeof(*n));
2334 strncat(n, channel->invite_list, start - channel->invite_list);
2335 strncat(n, end + 1, ((channel->invite_list +
2336 strlen(channel->invite_list)) - end) - 1);
2337 silc_free(channel->invite_list);
2338 channel->invite_list = n;
2343 /* Send notify to the primary router */
2344 if (!server->standalone)
2345 silc_server_send_notify_invite(server, server->router->connection,
2346 server->server_type == SILC_ROUTER ?
2347 TRUE : FALSE, channel,
2348 sender->id, add, del);
2350 /* Send command reply */
2351 tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
2355 silc_command_reply_payload_encode_va(SILC_COMMAND_INVITE,
2356 SILC_STATUS_OK, ident, 2,
2358 3, channel->invite_list,
2359 channel->invite_list ?
2360 strlen(channel->invite_list) : 0);
2363 silc_command_reply_payload_encode_va(SILC_COMMAND_INVITE,
2364 SILC_STATUS_OK, ident, 1,
2366 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
2367 packet->data, packet->len, FALSE);
2368 silc_buffer_free(packet);
2374 silc_free(channel_id);
2375 silc_server_command_free(cmd);
2380 SilcSocketConnection sock;
2384 /* Quits connection to client. This gets called if client won't
2385 close the connection even when it has issued QUIT command. */
2387 SILC_TASK_CALLBACK(silc_server_command_quit_cb)
2389 QuitInternal q = (QuitInternal)context;
2391 /* Free all client specific data, such as client entry and entires
2392 on channels this client may be on. */
2393 silc_server_free_client_data(q->server, q->sock, q->sock->user_data,
2395 q->sock->user_data = NULL;
2397 /* Close the connection on our side */
2398 silc_server_close_connection(q->server, q->sock);
2400 silc_free(q->signoff);
2404 /* Quits SILC session. This is the normal way to disconnect client. */
2406 SILC_SERVER_CMD_FUNC(quit)
2408 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2409 SilcServer server = cmd->server;
2410 SilcSocketConnection sock = cmd->sock;
2412 unsigned char *tmp = NULL;
2415 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_QUIT, cmd, 0, 1);
2417 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
2420 /* Get destination ID */
2421 tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
2425 q = silc_calloc(1, sizeof(*q));
2428 q->signoff = tmp ? strdup(tmp) : NULL;
2430 /* We quit the connection with little timeout */
2431 silc_task_register(server->timeout_queue, sock->sock,
2432 silc_server_command_quit_cb, (void *)q,
2433 0, 200000, SILC_TASK_TIMEOUT, SILC_TASK_PRI_LOW);
2436 silc_server_command_free(cmd);
2439 /* Server side of command KILL. This command is used by router operator
2440 to remove an client from the SILC Network temporarily. */
2442 SILC_SERVER_CMD_FUNC(kill)
2444 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2445 SilcServer server = cmd->server;
2446 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
2447 SilcClientEntry remote_client;
2448 SilcClientID *client_id;
2449 unsigned char *tmp, *comment;
2450 uint32 tmp_len, tmp_len2;
2452 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_KILL, cmd, 1, 2);
2454 if (!client || cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
2457 /* KILL command works only on router */
2458 if (server->server_type != SILC_ROUTER) {
2459 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
2460 SILC_STATUS_ERR_NO_ROUTER_PRIV);
2464 /* Check whether client has the permissions. */
2465 if (!(client->mode & SILC_UMODE_ROUTER_OPERATOR)) {
2466 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
2467 SILC_STATUS_ERR_NO_ROUTER_PRIV);
2471 /* Get the client ID */
2472 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
2474 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
2475 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
2478 client_id = silc_id_payload_parse_id(tmp, tmp_len);
2480 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
2481 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID);
2485 /* Get the client entry */
2486 remote_client = silc_idlist_find_client_by_id(server->local_list,
2488 if (!remote_client) {
2489 remote_client = silc_idlist_find_client_by_id(server->global_list,
2491 if (!remote_client) {
2492 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
2493 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID);
2498 if (remote_client->data.registered == FALSE) {
2499 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
2500 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID);
2505 comment = silc_argument_get_arg_type(cmd->args, 2, &tmp_len2);
2509 /* Send reply to the sender */
2510 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
2513 /* Send the KILL notify packets. First send it to the channel, then
2514 to our primary router and then directly to the client who is being
2515 killed right now. */
2517 /* Send KILLED notify to the channels. It is not sent to the client
2518 as it will be sent differently destined directly to the client and not
2520 silc_server_send_notify_on_channels(server, remote_client,
2521 remote_client, SILC_NOTIFY_TYPE_KILLED,
2524 comment, comment ? tmp_len2 : 0);
2526 /* Send KILLED notify to primary route */
2527 if (!server->standalone)
2528 silc_server_send_notify_killed(server, server->router->connection, TRUE,
2529 remote_client->id, comment);
2531 /* Send KILLED notify to the client directly */
2532 silc_server_send_notify_killed(server, remote_client->connection ?
2533 remote_client->connection :
2534 remote_client->router->connection, FALSE,
2535 remote_client->id, comment);
2537 /* Remove the client from all channels. This generates new keys to the
2538 channels as well. */
2539 silc_server_remove_from_channels(server, NULL, remote_client, FALSE,
2542 /* Remove the client entry, If it is locally connected then we will also
2543 disconnect the client here */
2544 if (remote_client->data.registered && remote_client->connection) {
2545 /* Remove locally conneted client */
2546 SilcSocketConnection sock = remote_client->connection;
2547 silc_server_free_client_data(server, sock, remote_client, FALSE, NULL);
2548 silc_server_close_connection(server, sock);
2550 /* Remove remote client */
2551 if (!silc_idlist_del_client(server->global_list, remote_client))
2552 silc_idlist_del_client(server->local_list, remote_client);
2556 silc_server_command_free(cmd);
2559 /* Server side of command INFO. This sends information about us to
2560 the client. If client requested specific server we will send the
2561 command to that server. */
2563 SILC_SERVER_CMD_FUNC(info)
2565 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2566 SilcServer server = cmd->server;
2567 SilcBuffer packet, idp;
2570 char *dest_server, *server_info = NULL, *server_name;
2571 uint16 ident = silc_command_get_ident(cmd->payload);
2572 SilcServerEntry entry = NULL;
2573 SilcServerID *server_id = NULL;
2575 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_INFO, cmd, 0, 2);
2577 /* Get server name */
2578 dest_server = silc_argument_get_arg_type(cmd->args, 1, NULL);
2581 tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
2583 server_id = silc_id_payload_parse_id(tmp, tmp_len);
2585 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INFO,
2586 SILC_STATUS_ERR_NO_SERVER_ID);
2592 /* Check whether we have this server cached */
2593 entry = silc_idlist_find_server_by_id(server->local_list,
2596 entry = silc_idlist_find_server_by_id(server->global_list,
2598 if (!entry && server->server_type == SILC_ROUTER) {
2599 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INFO,
2600 SILC_STATUS_ERR_NO_SUCH_SERVER);
2606 if ((!dest_server && !server_id) ||
2607 (dest_server && !cmd->pending &&
2608 !strncasecmp(dest_server, server->server_name, strlen(dest_server)))) {
2609 /* Send our reply */
2610 char info_string[256];
2612 memset(info_string, 0, sizeof(info_string));
2613 snprintf(info_string, sizeof(info_string),
2614 "location: %s server: %s admin: %s <%s>",
2615 server->config->admin_info->location,
2616 server->config->admin_info->server_type,
2617 server->config->admin_info->admin_name,
2618 server->config->admin_info->admin_email);
2620 server_info = info_string;
2621 entry = server->id_entry;
2623 /* Check whether we have this server cached */
2624 if (!entry && dest_server) {
2625 entry = silc_idlist_find_server_by_name(server->global_list,
2628 entry = silc_idlist_find_server_by_name(server->local_list,
2633 if (!cmd->pending &&
2634 server->server_type == SILC_ROUTER && entry && !entry->server_info) {
2635 /* Send to the server */
2639 old_ident = silc_command_get_ident(cmd->payload);
2640 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
2641 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
2643 silc_server_packet_send(server, entry->connection,
2644 SILC_PACKET_COMMAND, cmd->packet->flags,
2645 tmpbuf->data, tmpbuf->len, TRUE);
2647 /* Reprocess this packet after received reply from router */
2648 silc_server_command_pending(server, SILC_COMMAND_INFO,
2649 silc_command_get_ident(cmd->payload),
2650 silc_server_command_destructor,
2651 silc_server_command_info,
2652 silc_server_command_dup(cmd));
2653 cmd->pending = TRUE;
2654 silc_command_set_ident(cmd->payload, old_ident);
2655 silc_buffer_free(tmpbuf);
2659 if (!entry && !cmd->pending && !server->standalone) {
2660 /* Send to the primary router */
2664 old_ident = silc_command_get_ident(cmd->payload);
2665 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
2666 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
2668 silc_server_packet_send(server, server->router->connection,
2669 SILC_PACKET_COMMAND, cmd->packet->flags,
2670 tmpbuf->data, tmpbuf->len, TRUE);
2672 /* Reprocess this packet after received reply from router */
2673 silc_server_command_pending(server, SILC_COMMAND_INFO,
2674 silc_command_get_ident(cmd->payload),
2675 silc_server_command_destructor,
2676 silc_server_command_info,
2677 silc_server_command_dup(cmd));
2678 cmd->pending = TRUE;
2679 silc_command_set_ident(cmd->payload, old_ident);
2680 silc_buffer_free(tmpbuf);
2686 silc_free(server_id);
2689 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INFO,
2690 SILC_STATUS_ERR_NO_SUCH_SERVER);
2694 idp = silc_id_payload_encode(entry->id, SILC_ID_SERVER);
2696 server_info = entry->server_info;
2697 server_name = entry->server_name;
2699 /* Send the reply */
2701 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_INFO,
2702 SILC_STATUS_OK, ident, 3,
2703 2, idp->data, idp->len,
2705 strlen(server_name),
2707 strlen(server_info));
2709 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_INFO,
2710 SILC_STATUS_OK, ident, 2,
2711 2, idp->data, idp->len,
2713 strlen(server_name));
2714 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
2715 packet->data, packet->len, FALSE);
2717 silc_buffer_free(packet);
2718 silc_buffer_free(idp);
2721 silc_server_command_free(cmd);
2724 /* Server side of command PING. This just replies to the ping. */
2726 SILC_SERVER_CMD_FUNC(ping)
2728 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2729 SilcServer server = cmd->server;
2734 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_INFO, cmd, 1, 2);
2737 tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
2739 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PING,
2740 SILC_STATUS_ERR_NO_SERVER_ID);
2743 id = silc_id_str2id(tmp, len, SILC_ID_SERVER);
2747 if (SILC_ID_SERVER_COMPARE(id, server->id)) {
2748 /* Send our reply */
2749 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PING,
2752 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PING,
2753 SILC_STATUS_ERR_NO_SUCH_SERVER);
2760 silc_server_command_free(cmd);
2763 /* Internal routine to join channel. The channel sent to this function
2764 has been either created or resolved from ID lists. This joins the sent
2765 client to the channel. */
2767 static void silc_server_command_join_channel(SilcServer server,
2768 SilcServerCommandContext cmd,
2769 SilcChannelEntry channel,
2770 SilcClientID *client_id,
2774 SilcSocketConnection sock = cmd->sock;
2776 uint32 tmp_len, user_count;
2777 unsigned char *passphrase = NULL, mode[4], tmp2[4], tmp3[4];
2778 SilcClientEntry client;
2779 SilcChannelClientEntry chl;
2780 SilcBuffer reply, chidp, clidp, keyp = NULL, user_list, mode_list;
2781 uint16 ident = silc_command_get_ident(cmd->payload);
2782 char check[512], check2[512];
2784 SILC_LOG_DEBUG(("Start"));
2789 /* Get the client entry */
2790 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT) {
2791 client = (SilcClientEntry)sock->user_data;
2793 client = silc_server_get_client_resolve(server, client_id);
2798 /* The client info is being resolved. Reprocess this packet after
2799 receiving the reply to the query. */
2800 silc_server_command_pending(server, SILC_COMMAND_WHOIS,
2801 server->cmd_ident, NULL,
2802 silc_server_command_join,
2803 silc_server_command_dup(cmd));
2804 cmd->pending = TRUE;
2808 cmd->pending = FALSE;
2812 * Check channel modes
2815 memset(check, 0, sizeof(check));
2816 memset(check2, 0, sizeof(check2));
2817 strncat(check, client->nickname, strlen(client->nickname));
2818 strncat(check, "!", 1);
2819 strncat(check, client->username, strlen(client->username));
2820 if (!strchr(client->username, '@')) {
2821 strncat(check, "@", 1);
2822 strncat(check, cmd->sock->hostname, strlen(cmd->sock->hostname));
2825 strncat(check2, client->nickname, strlen(client->nickname));
2826 if (!strchr(client->nickname, '@')) {
2827 strncat(check2, "@", 1);
2828 strncat(check2, server->server_name, strlen(server->server_name));
2830 strncat(check2, "!", 1);
2831 strncat(check2, client->username, strlen(client->username));
2832 if (!strchr(client->username, '@')) {
2833 strncat(check2, "@", 1);
2834 strncat(check2, cmd->sock->hostname, strlen(cmd->sock->hostname));
2837 /* Check invite list if channel is invite-only channel */
2838 if (channel->mode & SILC_CHANNEL_MODE_INVITE) {
2839 if (!channel->invite_list ||
2840 (!silc_string_match(channel->invite_list, check) &&
2841 !silc_string_match(channel->invite_list, check2))) {
2842 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2843 SILC_STATUS_ERR_NOT_INVITED);
2848 /* Check ban list if it exists. If the client's nickname, server,
2849 username and/or hostname is in the ban list the access to the
2850 channel is denied. */
2851 if (channel->ban_list) {
2852 if (silc_string_match(channel->ban_list, check) ||
2853 silc_string_match(channel->ban_list, check2)) {
2854 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2855 SILC_STATUS_ERR_BANNED_FROM_CHANNEL);
2860 /* Get passphrase */
2861 tmp = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
2863 passphrase = silc_calloc(tmp_len, sizeof(*passphrase));
2864 memcpy(passphrase, tmp, tmp_len);
2867 /* Check the channel passphrase if set. */
2868 if (channel->mode & SILC_CHANNEL_MODE_PASSPHRASE) {
2869 if (!passphrase || memcmp(channel->passphrase, passphrase,
2870 strlen(channel->passphrase))) {
2871 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2872 SILC_STATUS_ERR_BAD_PASSWORD);
2877 /* Check user count limit if set. */
2878 if (channel->mode & SILC_CHANNEL_MODE_ULIMIT) {
2879 if (silc_hash_table_count(channel->user_list) + 1 >
2880 channel->user_limit) {
2881 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2882 SILC_STATUS_ERR_CHANNEL_IS_FULL);
2888 * Client is allowed to join to the channel. Make it happen.
2891 /* Check whether the client already is on the channel */
2892 if (silc_server_client_on_channel(client, channel)) {
2893 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2894 SILC_STATUS_ERR_USER_ON_CHANNEL);
2898 /* Generate new channel key as protocol dictates */
2899 if ((!created && silc_hash_table_count(channel->user_list) > 0) ||
2900 !channel->channel_key)
2901 silc_server_create_channel_key(server, channel, 0);
2903 /* Send the channel key. This is broadcasted to the channel but is not
2904 sent to the client who is joining to the channel. */
2905 if (!(channel->mode & SILC_CHANNEL_MODE_PRIVKEY))
2906 silc_server_send_channel_key(server, NULL, channel,
2907 server->server_type == SILC_ROUTER ?
2908 FALSE : !server->standalone);
2910 /* Join the client to the channel by adding it to channel's user list.
2911 Add also the channel to client entry's channels list for fast cross-
2913 chl = silc_calloc(1, sizeof(*chl));
2915 chl->client = client;
2916 chl->channel = channel;
2917 silc_hash_table_add(channel->user_list, client, chl);
2918 silc_hash_table_add(client->channels, channel, chl);
2920 /* Get users on the channel */
2921 silc_server_get_users_on_channel(server, channel, &user_list, &mode_list,
2924 /* Encode Client ID Payload of the original client who wants to join */
2925 clidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
2927 /* Encode command reply packet */
2928 chidp = silc_id_payload_encode(channel->id, SILC_ID_CHANNEL);
2929 SILC_PUT32_MSB(channel->mode, mode);
2930 SILC_PUT32_MSB(created, tmp2);
2931 SILC_PUT32_MSB(user_count, tmp3);
2933 if (!(channel->mode & SILC_CHANNEL_MODE_PRIVKEY)) {
2934 tmp = silc_id_id2str(channel->id, SILC_ID_CHANNEL);
2935 keyp = silc_channel_key_payload_encode(SILC_ID_CHANNEL_LEN, tmp,
2936 strlen(channel->channel_key->
2938 channel->channel_key->cipher->name,
2939 channel->key_len / 8, channel->key);
2944 silc_command_reply_payload_encode_va(SILC_COMMAND_JOIN,
2945 SILC_STATUS_OK, ident, 13,
2946 2, channel->channel_name,
2947 strlen(channel->channel_name),
2948 3, chidp->data, chidp->len,
2949 4, clidp->data, clidp->len,
2952 7, keyp ? keyp->data : NULL,
2953 keyp ? keyp->len : 0,
2954 8, channel->ban_list,
2956 strlen(channel->ban_list) : 0,
2957 9, channel->invite_list,
2958 channel->invite_list ?
2959 strlen(channel->invite_list) : 0,
2962 strlen(channel->topic) : 0,
2963 11, channel->hmac->hmac->name,
2964 strlen(channel->hmac->hmac->name),
2966 13, user_list->data, user_list->len,
2967 14, mode_list->data,
2970 /* Send command reply */
2971 silc_server_packet_send(server, sock, SILC_PACKET_COMMAND_REPLY, 0,
2972 reply->data, reply->len, FALSE);
2974 if (!cmd->pending) {
2975 /* Send JOIN notify to locally connected clients on the channel */
2976 silc_server_send_notify_to_channel(server, NULL, channel, FALSE,
2977 SILC_NOTIFY_TYPE_JOIN, 2,
2978 clidp->data, clidp->len,
2979 chidp->data, chidp->len);
2981 /* Send JOIN notify packet to our primary router */
2982 if (!server->standalone)
2983 silc_server_send_notify_join(server, server->router->connection,
2984 server->server_type == SILC_ROUTER ?
2985 TRUE : FALSE, channel, client->id);
2988 silc_buffer_free(reply);
2989 silc_buffer_free(clidp);
2990 silc_buffer_free(chidp);
2991 silc_buffer_free(keyp);
2992 silc_buffer_free(user_list);
2993 silc_buffer_free(mode_list);
2997 silc_free(passphrase);
3000 /* Server side of command JOIN. Joins client into requested channel. If
3001 the channel does not exist it will be created. */
3003 SILC_SERVER_CMD_FUNC(join)
3005 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
3006 SilcServer server = cmd->server;
3008 char *tmp, *channel_name = NULL, *cipher, *hmac;
3009 SilcChannelEntry channel;
3011 int created = FALSE;
3012 SilcClientID *client_id;
3014 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_JOIN, cmd, 1, 4);
3016 /* Get channel name */
3017 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
3019 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
3020 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3025 if (strlen(channel_name) > 256)
3026 channel_name[255] = '\0';
3028 if (silc_server_command_bad_chars(channel_name) == TRUE) {
3029 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
3030 SILC_STATUS_ERR_BAD_CHANNEL);
3034 /* Get Client ID of the client who is joining to the channel */
3035 tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
3037 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
3038 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3041 client_id = silc_id_payload_parse_id(tmp, tmp_len);
3043 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
3044 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3048 /* Get cipher and hmac name */
3049 cipher = silc_argument_get_arg_type(cmd->args, 4, NULL);
3050 hmac = silc_argument_get_arg_type(cmd->args, 5, NULL);
3052 /* See if the channel exists */
3053 channel = silc_idlist_find_channel_by_name(server->local_list,
3054 channel_name, NULL);
3056 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT) {
3057 /* If this is coming from client the Client ID in the command packet must
3058 be same as the client's ID. */
3059 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT) {
3060 SilcClientEntry entry = (SilcClientEntry)cmd->sock->user_data;
3061 if (!SILC_ID_CLIENT_COMPARE(entry->id, client_id)) {
3062 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
3063 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3068 if (!channel || !channel->id) {
3069 /* Channel not found */
3071 /* If we are standalone server we don't have a router, we just create
3072 the channel by ourselves. */
3073 if (server->standalone) {
3074 channel = silc_server_create_new_channel(server, server->id, cipher,
3075 hmac, channel_name, TRUE);
3077 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
3078 SILC_STATUS_ERR_UNKNOWN_ALGORITHM);
3082 umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
3087 /* The channel does not exist on our server. If we are normal server
3088 we will send JOIN command to our router which will handle the
3089 joining procedure (either creates the channel if it doesn't exist
3090 or joins the client to it). */
3091 if (server->server_type == SILC_SERVER) {
3095 /* If this is pending command callback then we've resolved
3096 it and it didn't work, return since we've notified the
3097 client already in the command reply callback. */
3101 old_ident = silc_command_get_ident(cmd->payload);
3102 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
3103 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
3105 /* Send JOIN command to our router */
3106 silc_server_packet_send(server, (SilcSocketConnection)
3107 server->router->connection,
3108 SILC_PACKET_COMMAND, cmd->packet->flags,
3109 tmpbuf->data, tmpbuf->len, TRUE);
3111 /* Reprocess this packet after received reply from router */
3112 silc_server_command_pending(server, SILC_COMMAND_JOIN,
3113 silc_command_get_ident(cmd->payload),
3114 silc_server_command_destructor,
3115 silc_server_command_join,
3116 silc_server_command_dup(cmd));
3117 cmd->pending = TRUE;
3121 /* We are router and the channel does not seem exist so we will check
3122 our global list as well for the channel. */
3123 channel = silc_idlist_find_channel_by_name(server->global_list,
3124 channel_name, NULL);
3126 /* Channel really does not exist, create it */
3127 channel = silc_server_create_new_channel(server, server->id, cipher,
3128 hmac, channel_name, TRUE);
3130 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
3131 SILC_STATUS_ERR_UNKNOWN_ALGORITHM);
3135 umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
3142 /* Channel not found */
3144 /* If the command came from router and/or we are normal server then
3145 something went wrong with the joining as the channel was not found.
3146 We can't do anything else but ignore this. */
3147 if (cmd->sock->type == SILC_SOCKET_TYPE_ROUTER ||
3148 server->server_type == SILC_SERVER)
3151 /* We are router and the channel does not seem exist so we will check
3152 our global list as well for the channel. */
3153 channel = silc_idlist_find_channel_by_name(server->global_list,
3154 channel_name, NULL);
3156 /* Channel really does not exist, create it */
3157 channel = silc_server_create_new_channel(server, server->id, cipher,
3158 hmac, channel_name, TRUE);
3160 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
3161 SILC_STATUS_ERR_UNKNOWN_ALGORITHM);
3165 umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
3171 /* If the channel does not have global users and is also empty it means the
3172 channel was created globally (by our router) and the client will be the
3173 channel founder and operator. */
3174 if (!channel->global_users && !silc_hash_table_count(channel->user_list)) {
3175 umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
3176 created = TRUE; /* Created globally by our router */
3179 /* Join to the channel */
3180 silc_server_command_join_channel(server, cmd, channel, client_id,
3183 silc_free(client_id);
3186 silc_server_command_free(cmd);
3189 /* Server side of command MOTD. Sends server's current "message of the
3190 day" to the client. */
3192 SILC_SERVER_CMD_FUNC(motd)
3194 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
3195 SilcServer server = cmd->server;
3196 SilcBuffer packet, idp;
3197 char *motd, *dest_server;
3199 uint16 ident = silc_command_get_ident(cmd->payload);
3201 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_MOTD, cmd, 1, 1);
3203 /* Get server name */
3204 dest_server = silc_argument_get_arg_type(cmd->args, 1, NULL);
3206 silc_server_command_send_status_reply(cmd, SILC_COMMAND_MOTD,
3207 SILC_STATUS_ERR_NO_SUCH_SERVER);
3211 if (!strncasecmp(dest_server, server->server_name, strlen(dest_server))) {
3214 idp = silc_id_payload_encode(server->id_entry->id, SILC_ID_SERVER);
3216 if (server->config && server->config->motd &&
3217 server->config->motd->motd_file) {
3219 motd = silc_file_read(server->config->motd->motd_file, &motd_len);
3224 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_MOTD,
3225 SILC_STATUS_OK, ident, 2,
3231 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_MOTD,
3232 SILC_STATUS_OK, ident, 1,
3236 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
3237 packet->data, packet->len, FALSE);
3238 silc_buffer_free(packet);
3239 silc_buffer_free(idp);
3241 SilcServerEntry entry;
3243 /* Check whether we have this server cached */
3244 entry = silc_idlist_find_server_by_name(server->global_list,
3247 entry = silc_idlist_find_server_by_name(server->local_list,
3251 if (server->server_type == SILC_ROUTER && !cmd->pending &&
3252 entry && !entry->motd) {
3253 /* Send to the server */
3257 old_ident = silc_command_get_ident(cmd->payload);
3258 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
3259 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
3261 silc_server_packet_send(server, entry->connection,
3262 SILC_PACKET_COMMAND, cmd->packet->flags,
3263 tmpbuf->data, tmpbuf->len, TRUE);
3265 /* Reprocess this packet after received reply from router */
3266 silc_server_command_pending(server, SILC_COMMAND_MOTD,
3267 silc_command_get_ident(cmd->payload),
3268 silc_server_command_destructor,
3269 silc_server_command_motd,
3270 silc_server_command_dup(cmd));
3271 cmd->pending = TRUE;
3272 silc_command_set_ident(cmd->payload, old_ident);
3273 silc_buffer_free(tmpbuf);
3277 if (!entry && !cmd->pending && !server->standalone) {
3278 /* Send to the primary router */
3282 old_ident = silc_command_get_ident(cmd->payload);
3283 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
3284 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
3286 silc_server_packet_send(server, server->router->connection,
3287 SILC_PACKET_COMMAND, cmd->packet->flags,
3288 tmpbuf->data, tmpbuf->len, TRUE);
3290 /* Reprocess this packet after received reply from router */
3291 silc_server_command_pending(server, SILC_COMMAND_MOTD,
3292 silc_command_get_ident(cmd->payload),
3293 silc_server_command_destructor,
3294 silc_server_command_motd,
3295 silc_server_command_dup(cmd));
3296 cmd->pending = TRUE;
3297 silc_command_set_ident(cmd->payload, old_ident);
3298 silc_buffer_free(tmpbuf);
3303 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INFO,
3304 SILC_STATUS_ERR_NO_SUCH_SERVER);
3308 idp = silc_id_payload_encode(server->id_entry->id, SILC_ID_SERVER);
3311 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_MOTD,
3312 SILC_STATUS_OK, ident, 2,
3315 strlen(entry->motd));
3317 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_MOTD,
3318 SILC_STATUS_OK, ident, 1,
3321 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
3322 packet->data, packet->len, FALSE);
3323 silc_buffer_free(packet);
3324 silc_buffer_free(idp);
3328 silc_server_command_free(cmd);
3331 /* Server side of command UMODE. Client can use this command to set/unset
3332 user mode. Client actually cannot set itself to be as server/router
3333 operator so this can be used only to unset the modes. */
3335 SILC_SERVER_CMD_FUNC(umode)
3337 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
3338 SilcServer server = cmd->server;
3339 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
3341 unsigned char *tmp_mask;
3343 uint16 ident = silc_command_get_ident(cmd->payload);
3345 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
3348 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_UMODE, cmd, 2, 2);
3350 /* Get the client's mode mask */
3351 tmp_mask = silc_argument_get_arg_type(cmd->args, 2, NULL);
3353 silc_server_command_send_status_reply(cmd, SILC_COMMAND_UMODE,
3354 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3357 SILC_GET32_MSB(mask, tmp_mask);
3363 if (mask & SILC_UMODE_SERVER_OPERATOR) {
3364 if (!(client->mode & SILC_UMODE_SERVER_OPERATOR)) {
3365 /* Cannot operator mode */
3366 silc_server_command_send_status_reply(cmd, SILC_COMMAND_UMODE,
3367 SILC_STATUS_ERR_PERM_DENIED);
3371 if (client->mode & SILC_UMODE_SERVER_OPERATOR)
3372 /* Remove the server operator rights */
3373 client->mode &= ~SILC_UMODE_SERVER_OPERATOR;
3376 if (mask & SILC_UMODE_ROUTER_OPERATOR) {
3377 if (!(client->mode & SILC_UMODE_ROUTER_OPERATOR)) {
3378 /* Cannot operator mode */
3379 silc_server_command_send_status_reply(cmd, SILC_COMMAND_UMODE,
3380 SILC_STATUS_ERR_PERM_DENIED);
3384 if (client->mode & SILC_UMODE_ROUTER_OPERATOR)
3385 /* Remove the router operator rights */
3386 client->mode &= ~SILC_UMODE_ROUTER_OPERATOR;
3389 if (mask & SILC_UMODE_GONE) {
3390 client->mode |= SILC_UMODE_GONE;
3392 if (client->mode & SILC_UMODE_GONE)
3393 /* Remove the gone status */
3394 client->mode &= ~SILC_UMODE_GONE;
3397 /* Send UMODE change to primary router */
3398 if (!server->standalone)
3399 silc_server_send_notify_umode(server, server->router->connection, TRUE,
3400 client->id, client->mode);
3402 /* Send command reply to sender */
3403 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_UMODE,
3404 SILC_STATUS_OK, ident, 1,
3406 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
3407 packet->data, packet->len, FALSE);
3408 silc_buffer_free(packet);
3411 silc_server_command_free(cmd);
3414 /* Checks that client has rights to add or remove channel modes. If any
3415 of the checks fails FALSE is returned. */
3417 int silc_server_check_cmode_rights(SilcChannelEntry channel,
3418 SilcChannelClientEntry client,
3421 int is_op = client->mode & SILC_CHANNEL_UMODE_CHANOP;
3422 int is_fo = client->mode & SILC_CHANNEL_UMODE_CHANFO;
3424 /* Check whether has rights to change anything */
3425 if (!is_op && !is_fo)
3428 /* Check whether has rights to change everything */
3432 /* We know that client is channel operator, check that they are not
3433 changing anything that requires channel founder rights. Rest of the
3434 modes are available automatically for channel operator. */
3436 if (mode & SILC_CHANNEL_MODE_PRIVKEY) {
3437 if (is_op && !is_fo)
3440 if (channel->mode & SILC_CHANNEL_MODE_PRIVKEY) {
3441 if (is_op && !is_fo)
3446 if (mode & SILC_CHANNEL_MODE_PASSPHRASE) {
3447 if (is_op && !is_fo)
3450 if (channel->mode & SILC_CHANNEL_MODE_PASSPHRASE) {
3451 if (is_op && !is_fo)
3456 if (mode & SILC_CHANNEL_MODE_CIPHER) {
3457 if (is_op && !is_fo)
3460 if (channel->mode & SILC_CHANNEL_MODE_CIPHER) {
3461 if (is_op && !is_fo)
3466 if (mode & SILC_CHANNEL_MODE_FOUNDER_AUTH) {
3467 if (is_op && !is_fo)
3470 if (channel->mode & SILC_CHANNEL_MODE_FOUNDER_AUTH) {
3471 if (is_op && !is_fo)
3479 /* Server side command of CMODE. Changes channel mode */
3481 SILC_SERVER_CMD_FUNC(cmode)
3483 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
3484 SilcServer server = cmd->server;
3485 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
3486 SilcIDListData idata = (SilcIDListData)client;
3487 SilcChannelID *channel_id;
3488 SilcChannelEntry channel;
3489 SilcChannelClientEntry chl;
3490 SilcBuffer packet, cidp;
3491 unsigned char *tmp, *tmp_id, *tmp_mask;
3492 char *cipher = NULL, *hmac = NULL;
3493 uint32 mode_mask, tmp_len, tmp_len2;
3494 uint16 ident = silc_command_get_ident(cmd->payload);
3496 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_CMODE, cmd, 2, 7);
3498 /* Get Channel ID */
3499 tmp_id = silc_argument_get_arg_type(cmd->args, 1, &tmp_len2);
3501 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3502 SILC_STATUS_ERR_NO_CHANNEL_ID);
3505 channel_id = silc_id_payload_parse_id(tmp_id, tmp_len2);
3507 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3508 SILC_STATUS_ERR_NO_CHANNEL_ID);
3512 /* Get the channel mode mask */
3513 tmp_mask = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
3515 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3516 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3519 SILC_GET32_MSB(mode_mask, tmp_mask);
3521 /* Get channel entry */
3522 channel = silc_idlist_find_channel_by_id(server->local_list,
3525 channel = silc_idlist_find_channel_by_id(server->global_list,
3528 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3529 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
3534 /* Check whether this client is on the channel */
3535 if (!silc_server_client_on_channel(client, channel)) {
3536 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3537 SILC_STATUS_ERR_NOT_ON_CHANNEL);
3541 /* Get entry to the channel user list */
3542 silc_hash_table_find(channel->user_list, client, NULL, (void *)&chl);
3544 /* Check that client has rights to change any requested channel modes */
3545 if (!silc_server_check_cmode_rights(channel, chl, mode_mask)) {
3546 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3547 SILC_STATUS_ERR_NO_CHANNEL_PRIV);
3552 * Check the modes. Modes that requires nothing special operation are
3556 if (mode_mask & SILC_CHANNEL_MODE_PRIVKEY) {
3557 /* Channel uses private keys to protect traffic. Client(s) has set the
3558 key locally they want to use, server does not know that key. */
3559 /* Nothing interesting to do here */
3561 if (channel->mode & SILC_CHANNEL_MODE_PRIVKEY) {
3562 /* The mode is removed and we need to generate and distribute
3563 new channel key. Clients are not using private channel keys
3564 anymore after this. */
3566 /* Re-generate channel key */
3567 silc_server_create_channel_key(server, channel, 0);
3569 /* Send the channel key. This sends it to our local clients and if
3570 we are normal server to our router as well. */
3571 silc_server_send_channel_key(server, NULL, channel,
3572 server->server_type == SILC_ROUTER ?
3573 FALSE : !server->standalone);
3575 cipher = channel->channel_key->cipher->name;
3576 hmac = channel->hmac->hmac->name;
3580 if (mode_mask & SILC_CHANNEL_MODE_ULIMIT) {
3581 /* User limit is set on channel */
3584 /* Get user limit */
3585 tmp = silc_argument_get_arg_type(cmd->args, 3, NULL);
3587 if (!(channel->mode & SILC_CHANNEL_MODE_ULIMIT)) {
3588 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3589 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3593 SILC_GET32_MSB(user_limit, tmp);
3594 channel->user_limit = user_limit;
3597 if (channel->mode & SILC_CHANNEL_MODE_ULIMIT)
3598 /* User limit mode is unset. Remove user limit */
3599 channel->user_limit = 0;
3602 if (mode_mask & SILC_CHANNEL_MODE_PASSPHRASE) {
3603 if (!(channel->mode & SILC_CHANNEL_MODE_PASSPHRASE)) {
3604 /* Passphrase has been set to channel */
3606 /* Get the passphrase */
3607 tmp = silc_argument_get_arg_type(cmd->args, 4, NULL);
3609 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3610 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3614 /* Save the passphrase */
3615 channel->passphrase = strdup(tmp);
3618 if (channel->mode & SILC_CHANNEL_MODE_PASSPHRASE) {
3619 /* Passphrase mode is unset. remove the passphrase */
3620 if (channel->passphrase) {
3621 silc_free(channel->passphrase);
3622 channel->passphrase = NULL;
3627 if (mode_mask & SILC_CHANNEL_MODE_CIPHER) {
3628 if (!(channel->mode & SILC_CHANNEL_MODE_CIPHER)) {
3629 /* Cipher to use protect the traffic */
3632 cipher = silc_argument_get_arg_type(cmd->args, 5, NULL);
3634 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3635 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3639 /* Delete old cipher and allocate the new one */
3640 silc_cipher_free(channel->channel_key);
3641 if (!silc_cipher_alloc(cipher, &channel->channel_key)) {
3642 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3643 SILC_STATUS_ERR_UNKNOWN_ALGORITHM);
3647 /* Re-generate channel key */
3648 silc_server_create_channel_key(server, channel, 0);
3650 /* Send the channel key. This sends it to our local clients and if
3651 we are normal server to our router as well. */
3652 silc_server_send_channel_key(server, NULL, channel,
3653 server->server_type == SILC_ROUTER ?
3654 FALSE : !server->standalone);
3657 if (channel->mode & SILC_CHANNEL_MODE_CIPHER) {
3658 /* Cipher mode is unset. Remove the cipher and revert back to
3660 cipher = channel->cipher;
3662 /* Delete old cipher and allocate default one */
3663 silc_cipher_free(channel->channel_key);
3664 if (!silc_cipher_alloc(cipher ? cipher : "aes-256-cbc",
3665 &channel->channel_key)) {
3666 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3667 SILC_STATUS_ERR_UNKNOWN_ALGORITHM);
3671 /* Re-generate channel key */
3672 silc_server_create_channel_key(server, channel, 0);
3674 /* Send the channel key. This sends it to our local clients and if
3675 we are normal server to our router as well. */
3676 silc_server_send_channel_key(server, NULL, channel,
3677 server->server_type == SILC_ROUTER ?
3678 FALSE : !server->standalone);
3682 if (mode_mask & SILC_CHANNEL_MODE_HMAC) {
3683 if (!(channel->mode & SILC_CHANNEL_MODE_HMAC)) {
3684 /* HMAC to use protect the traffic */
3685 unsigned char hash[32];
3688 hmac = silc_argument_get_arg_type(cmd->args, 6, NULL);
3690 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3691 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3695 /* Delete old hmac and allocate the new one */
3696 silc_hmac_free(channel->hmac);
3697 if (!silc_hmac_alloc(hmac, NULL, &channel->hmac)) {
3698 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3699 SILC_STATUS_ERR_UNKNOWN_ALGORITHM);
3703 /* Set the HMAC key out of current channel key. The client must do
3705 silc_hash_make(channel->hmac->hash, channel->key, channel->key_len / 8,
3707 silc_hmac_set_key(channel->hmac, hash,
3708 silc_hash_len(channel->hmac->hash));
3709 memset(hash, 0, sizeof(hash));
3712 if (channel->mode & SILC_CHANNEL_MODE_HMAC) {
3713 /* Hmac mode is unset. Remove the hmac and revert back to
3715 unsigned char hash[32];
3716 hmac = channel->hmac_name;
3718 /* Delete old hmac and allocate default one */
3719 silc_hmac_free(channel->hmac);
3720 if (!silc_hmac_alloc(hmac ? hmac : "hmac-sha1-96", NULL,
3722 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3723 SILC_STATUS_ERR_UNKNOWN_ALGORITHM);
3727 /* Set the HMAC key out of current channel key. The client must do
3729 silc_hash_make(channel->hmac->hash, channel->key, channel->key_len / 8,
3731 silc_hmac_set_key(channel->hmac, hash,
3732 silc_hash_len(channel->hmac->hash));
3733 memset(hash, 0, sizeof(hash));
3737 if (mode_mask & SILC_CHANNEL_MODE_FOUNDER_AUTH) {
3738 if (chl->mode & SILC_CHANNEL_UMODE_CHANFO) {
3739 if (!(channel->mode & SILC_CHANNEL_MODE_FOUNDER_AUTH)) {
3740 /* Set the founder authentication */
3741 SilcAuthPayload auth;
3743 tmp = silc_argument_get_arg_type(cmd->args, 7, &tmp_len);
3745 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3746 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3750 auth = silc_auth_payload_parse(tmp, tmp_len);
3752 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3753 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3757 /* Save the public key */
3758 tmp = silc_pkcs_public_key_encode(idata->public_key, &tmp_len);
3759 silc_pkcs_public_key_decode(tmp, tmp_len, &channel->founder_key);
3762 channel->founder_method = silc_auth_get_method(auth);
3764 if (channel->founder_method == SILC_AUTH_PASSWORD) {
3765 tmp = silc_auth_get_data(auth, &tmp_len);
3766 channel->founder_passwd =
3767 silc_calloc(tmp_len + 1, sizeof(*channel->founder_passwd));
3768 memcpy(channel->founder_passwd, tmp, tmp_len);
3769 channel->founder_passwd_len = tmp_len;
3772 silc_auth_payload_free(auth);
3776 if (chl->mode & SILC_CHANNEL_UMODE_CHANFO) {
3777 if (channel->mode & SILC_CHANNEL_MODE_FOUNDER_AUTH) {
3778 if (channel->founder_key)
3779 silc_pkcs_public_key_free(channel->founder_key);
3780 if (channel->founder_passwd) {
3781 silc_free(channel->founder_passwd);
3782 channel->founder_passwd = NULL;
3788 /* Finally, set the mode */
3789 channel->mode = mode_mask;
3791 /* Send CMODE_CHANGE notify */
3792 cidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
3793 silc_server_send_notify_to_channel(server, NULL, channel, FALSE,
3794 SILC_NOTIFY_TYPE_CMODE_CHANGE, 4,
3795 cidp->data, cidp->len,
3797 cipher, cipher ? strlen(cipher) : 0,
3798 hmac, hmac ? strlen(hmac) : 0);
3800 /* Set CMODE notify type to network */
3801 if (!server->standalone)
3802 silc_server_send_notify_cmode(server, server->router->connection,
3803 server->server_type == SILC_ROUTER ?
3804 TRUE : FALSE, channel,
3805 mode_mask, client->id, SILC_ID_CLIENT,
3808 /* Send command reply to sender */
3809 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_CMODE,
3810 SILC_STATUS_OK, ident, 2,
3811 2, tmp_id, tmp_len2,
3813 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
3814 packet->data, packet->len, FALSE);
3816 silc_buffer_free(packet);
3817 silc_free(channel_id);
3821 silc_server_command_free(cmd);
3824 /* Server side of CUMODE command. Changes client's mode on a channel. */
3826 SILC_SERVER_CMD_FUNC(cumode)
3828 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
3829 SilcServer server = cmd->server;
3830 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
3831 SilcIDListData idata = (SilcIDListData)client;
3832 SilcChannelID *channel_id;
3833 SilcClientID *client_id;
3834 SilcChannelEntry channel;
3835 SilcClientEntry target_client;
3836 SilcChannelClientEntry chl;
3837 SilcBuffer packet, idp;
3838 unsigned char *tmp_id, *tmp_ch_id, *tmp_mask;
3839 uint32 target_mask, sender_mask = 0, tmp_len, tmp_ch_len;
3841 uint16 ident = silc_command_get_ident(cmd->payload);
3843 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_CUMODE, cmd, 3, 4);
3845 /* Get Channel ID */
3846 tmp_ch_id = silc_argument_get_arg_type(cmd->args, 1, &tmp_ch_len);
3848 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3849 SILC_STATUS_ERR_NO_CHANNEL_ID);
3852 channel_id = silc_id_payload_parse_id(tmp_ch_id, tmp_ch_len);
3854 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3855 SILC_STATUS_ERR_NO_CHANNEL_ID);
3859 /* Get channel entry */
3860 channel = silc_idlist_find_channel_by_id(server->local_list,
3863 channel = silc_idlist_find_channel_by_id(server->global_list,
3866 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3867 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
3872 /* Check whether sender is on the channel */
3873 if (!silc_server_client_on_channel(client, channel)) {
3874 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3875 SILC_STATUS_ERR_NOT_ON_CHANNEL);
3879 /* Check that client has rights to change other's rights */
3880 silc_hash_table_find(channel->user_list, client, NULL, (void *)&chl);
3881 sender_mask = chl->mode;
3883 /* Get the target client's channel mode mask */
3884 tmp_mask = silc_argument_get_arg_type(cmd->args, 2, NULL);
3886 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3887 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3890 SILC_GET32_MSB(target_mask, tmp_mask);
3892 /* Get target Client ID */
3893 tmp_id = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
3895 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3896 SILC_STATUS_ERR_NO_CLIENT_ID);
3899 client_id = silc_id_payload_parse_id(tmp_id, tmp_len);
3901 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3902 SILC_STATUS_ERR_NO_CLIENT_ID);
3906 /* Get target client's entry */
3907 target_client = silc_idlist_find_client_by_id(server->local_list,
3909 if (!target_client) {
3910 target_client = silc_idlist_find_client_by_id(server->global_list,
3914 if (target_client != client &&
3915 !(sender_mask & SILC_CHANNEL_UMODE_CHANFO) &&
3916 !(sender_mask & SILC_CHANNEL_UMODE_CHANOP)) {
3917 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3918 SILC_STATUS_ERR_NO_CHANNEL_PRIV);
3922 /* Check whether target client is on the channel */
3923 if (target_client != client) {
3924 if (!silc_server_client_on_channel(target_client, channel)) {
3925 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3926 SILC_STATUS_ERR_USER_NOT_ON_CHANNEL);
3930 /* Get entry to the channel user list */
3931 silc_hash_table_find(channel->user_list, target_client, NULL,
3939 /* If the target client is founder, no one else can change their mode
3941 if (chl->mode & SILC_CHANNEL_UMODE_CHANFO && chl->client != target_client) {
3942 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3943 SILC_STATUS_ERR_NOT_YOU);
3947 if (target_mask & SILC_CHANNEL_UMODE_CHANFO) {
3948 /* The client tries to claim the founder rights. */
3949 unsigned char *tmp_auth;
3950 uint32 tmp_auth_len, auth_len;
3953 if (target_client != client) {
3954 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3955 SILC_STATUS_ERR_NOT_YOU);
3959 if (!(channel->mode & SILC_CHANNEL_MODE_FOUNDER_AUTH) ||
3960 !channel->founder_key) {
3961 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3962 SILC_STATUS_ERR_NOT_YOU);
3966 tmp_auth = silc_argument_get_arg_type(cmd->args, 4, &tmp_auth_len);
3968 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3969 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3973 auth = (channel->founder_method == SILC_AUTH_PASSWORD ?
3974 (void *)channel->founder_passwd : (void *)channel->founder_key);
3975 auth_len = (channel->founder_method == SILC_AUTH_PASSWORD ?
3976 channel->founder_passwd_len : 0);
3978 if (!silc_auth_verify_data(tmp_auth, tmp_auth_len,
3979 channel->founder_method, auth, auth_len,
3980 idata->hash, client->id, SILC_ID_CLIENT)) {
3981 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3982 SILC_STATUS_ERR_AUTH_FAILED);
3986 sender_mask = chl->mode |= SILC_CHANNEL_UMODE_CHANFO;
3989 if (chl->mode & SILC_CHANNEL_UMODE_CHANFO) {
3990 if (target_client == client) {
3991 /* Remove channel founder rights from itself */
3992 chl->mode &= ~SILC_CHANNEL_UMODE_CHANFO;
3995 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3996 SILC_STATUS_ERR_NOT_YOU);
4002 if (target_mask & SILC_CHANNEL_UMODE_CHANOP) {
4003 /* Promote to operator */
4004 if (!(chl->mode & SILC_CHANNEL_UMODE_CHANOP)) {
4005 if (!(sender_mask & SILC_CHANNEL_UMODE_CHANOP) &&
4006 !(sender_mask & SILC_CHANNEL_UMODE_CHANFO)) {
4007 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
4008 SILC_STATUS_ERR_NO_CHANNEL_PRIV);
4012 chl->mode |= SILC_CHANNEL_UMODE_CHANOP;
4016 if (chl->mode & SILC_CHANNEL_UMODE_CHANOP) {
4017 if (!(sender_mask & SILC_CHANNEL_UMODE_CHANOP) &&
4018 !(sender_mask & SILC_CHANNEL_UMODE_CHANFO)) {
4019 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
4020 SILC_STATUS_ERR_NO_CHANNEL_PRIV);
4024 /* Demote to normal user */
4025 chl->mode &= ~SILC_CHANNEL_UMODE_CHANOP;
4030 idp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
4031 tmp_id = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
4033 /* Send notify to channel, notify only if mode was actually changed. */
4035 silc_server_send_notify_to_channel(server, NULL, channel, FALSE,
4036 SILC_NOTIFY_TYPE_CUMODE_CHANGE, 3,
4037 idp->data, idp->len,
4041 /* Set CUMODE notify type to network */
4042 if (!server->standalone)
4043 silc_server_send_notify_cumode(server, server->router->connection,
4044 server->server_type == SILC_ROUTER ?
4045 TRUE : FALSE, channel,
4046 target_mask, client->id,
4051 /* Send command reply to sender */
4052 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_CUMODE,
4053 SILC_STATUS_OK, ident, 3,
4055 3, tmp_ch_id, tmp_ch_len,
4056 4, tmp_id, tmp_len);
4057 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
4058 packet->data, packet->len, FALSE);
4060 silc_buffer_free(packet);
4061 silc_free(channel_id);
4062 silc_free(client_id);
4063 silc_buffer_free(idp);
4066 silc_server_command_free(cmd);
4069 /* Server side of KICK command. Kicks client out of channel. */
4071 SILC_SERVER_CMD_FUNC(kick)
4073 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4074 SilcServer server = cmd->server;
4075 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
4076 SilcClientEntry target_client;
4077 SilcChannelID *channel_id;
4078 SilcClientID *client_id;
4079 SilcChannelEntry channel;
4080 SilcChannelClientEntry chl;
4083 unsigned char *tmp, *comment;
4085 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_LEAVE, cmd, 1, 3);
4087 /* Get Channel ID */
4088 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
4090 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4091 SILC_STATUS_ERR_NO_CHANNEL_ID);
4094 channel_id = silc_id_payload_parse_id(tmp, tmp_len);
4096 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4097 SILC_STATUS_ERR_NO_CHANNEL_ID);
4101 /* Get channel entry */
4102 channel = silc_idlist_find_channel_by_id(server->local_list,
4105 channel = silc_idlist_find_channel_by_id(server->local_list,
4108 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4109 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
4114 /* Check whether sender is on the channel */
4115 if (!silc_server_client_on_channel(client, channel)) {
4116 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4117 SILC_STATUS_ERR_NOT_ON_CHANNEL);
4121 /* Check that the kicker is channel operator or channel founder */
4122 silc_hash_table_find(channel->user_list, client, NULL, (void *)&chl);
4123 if (chl->mode == SILC_CHANNEL_UMODE_NONE) {
4124 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4125 SILC_STATUS_ERR_NO_CHANNEL_PRIV);
4129 /* Get target Client ID */
4130 tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
4132 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4133 SILC_STATUS_ERR_NO_CLIENT_ID);
4136 client_id = silc_id_payload_parse_id(tmp, tmp_len);
4138 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4139 SILC_STATUS_ERR_NO_CLIENT_ID);
4143 /* Get target client's entry */
4144 target_client = silc_idlist_find_client_by_id(server->local_list,
4146 if (!target_client) {
4147 target_client = silc_idlist_find_client_by_id(server->global_list,
4151 /* Check that the target client is not channel founder. Channel founder
4152 cannot be kicked from the channel. */
4153 silc_hash_table_find(channel->user_list, target_client, NULL, (void *)&chl);
4154 if (chl->mode & SILC_CHANNEL_UMODE_CHANFO) {
4155 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4156 SILC_STATUS_ERR_NO_CHANNEL_FOPRIV);
4160 /* Check whether target client is on the channel */
4161 if (!silc_server_client_on_channel(target_client, channel)) {
4162 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4163 SILC_STATUS_ERR_USER_NOT_ON_CHANNEL);
4169 comment = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
4173 /* Send command reply to sender */
4174 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4177 /* Send KICKED notify to local clients on the channel */
4178 idp = silc_id_payload_encode(target_client->id, SILC_ID_CLIENT);
4179 silc_server_send_notify_to_channel(server, NULL, channel, FALSE,
4180 SILC_NOTIFY_TYPE_KICKED,
4182 idp->data, idp->len,
4183 comment, comment ? strlen(comment) : 0);
4184 silc_buffer_free(idp);
4186 /* Remove the client from the channel. If the channel does not exist
4187 after removing the client then the client kicked itself off the channel
4188 and we don't have to send anything after that. */
4189 if (!silc_server_remove_from_one_channel(server, NULL, channel,
4190 target_client, FALSE))
4193 /* Send KICKED notify to primary route */
4194 if (!server->standalone)
4195 silc_server_send_notify_kicked(server, server->router->connection,
4196 server->server_type == SILC_ROUTER ?
4197 TRUE : FALSE, channel,
4198 target_client->id, comment);
4200 if (!(channel->mode & SILC_CHANNEL_MODE_PRIVKEY)) {
4201 /* Re-generate channel key */
4202 silc_server_create_channel_key(server, channel, 0);
4204 /* Send the channel key to the channel. The key of course is not sent
4205 to the client who was kicked off the channel. */
4206 silc_server_send_channel_key(server, target_client->connection, channel,
4207 server->server_type == SILC_ROUTER ?
4208 FALSE : !server->standalone);
4212 silc_server_command_free(cmd);
4215 /* Server side of OPER command. Client uses this comand to obtain server
4216 operator privileges to this server/router. */
4218 SILC_SERVER_CMD_FUNC(oper)
4220 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4221 SilcServer server = cmd->server;
4222 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
4223 unsigned char *username, *auth;
4225 SilcServerConfigSectionAdminConnection *admin;
4226 SilcIDListData idata = (SilcIDListData)client;
4228 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_OPER, cmd, 1, 2);
4230 if (!client || cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
4233 /* Get the username */
4234 username = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
4236 silc_server_command_send_status_reply(cmd, SILC_COMMAND_OPER,
4237 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
4241 /* Get the admin configuration */
4242 admin = silc_server_config_find_admin(server->config, cmd->sock->ip,
4243 username, client->nickname);
4245 admin = silc_server_config_find_admin(server->config, cmd->sock->hostname,
4246 username, client->nickname);
4248 silc_server_command_send_status_reply(cmd, SILC_COMMAND_OPER,
4249 SILC_STATUS_ERR_AUTH_FAILED);
4254 /* Get the authentication payload */
4255 auth = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
4257 silc_server_command_send_status_reply(cmd, SILC_COMMAND_OPER,
4258 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
4262 /* Verify the authentication data */
4263 if (!silc_auth_verify_data(auth, tmp_len, admin->auth_meth,
4264 admin->auth_data, admin->auth_data_len,
4265 idata->hash, client->id, SILC_ID_CLIENT)) {
4266 silc_server_command_send_status_reply(cmd, SILC_COMMAND_OPER,
4267 SILC_STATUS_ERR_AUTH_FAILED);
4271 /* Client is now server operator */
4272 client->mode |= SILC_UMODE_SERVER_OPERATOR;
4274 /* Send UMODE change to primary router */
4275 if (!server->standalone)
4276 silc_server_send_notify_umode(server, server->router->connection, TRUE,
4277 client->id, client->mode);
4279 /* Send reply to the sender */
4280 silc_server_command_send_status_reply(cmd, SILC_COMMAND_OPER,
4284 silc_server_command_free(cmd);
4287 /* Server side of SILCOPER command. Client uses this comand to obtain router
4288 operator privileges to this router. */
4290 SILC_SERVER_CMD_FUNC(silcoper)
4292 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4293 SilcServer server = cmd->server;
4294 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
4295 unsigned char *username, *auth;
4297 SilcServerConfigSectionAdminConnection *admin;
4298 SilcIDListData idata = (SilcIDListData)client;
4300 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_SILCOPER, cmd, 1, 2);
4302 if (server->server_type == SILC_SERVER)
4305 if (!client || cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
4308 /* Get the username */
4309 username = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
4311 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
4312 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
4316 /* Get the admin configuration */
4317 admin = silc_server_config_find_admin(server->config, cmd->sock->ip,
4318 username, client->nickname);
4320 admin = silc_server_config_find_admin(server->config, cmd->sock->hostname,
4321 username, client->nickname);
4323 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
4324 SILC_STATUS_ERR_AUTH_FAILED);
4329 /* Get the authentication payload */
4330 auth = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
4332 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
4333 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
4337 /* Verify the authentication data */
4338 if (!silc_auth_verify_data(auth, tmp_len, admin->auth_meth,
4339 admin->auth_data, admin->auth_data_len,
4340 idata->hash, client->id, SILC_ID_CLIENT)) {
4341 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
4342 SILC_STATUS_ERR_AUTH_FAILED);
4346 /* Client is now router operator */
4347 client->mode |= SILC_UMODE_ROUTER_OPERATOR;
4349 /* Send UMODE change to primary router */
4350 if (!server->standalone)
4351 silc_server_send_notify_umode(server, server->router->connection, TRUE,
4352 client->id, client->mode);
4354 /* Send reply to the sender */
4355 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
4359 silc_server_command_free(cmd);
4362 /* Server side command of CONNECT. Connects us to the specified remote
4363 server or router. */
4365 SILC_SERVER_CMD_FUNC(connect)
4367 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4368 SilcServer server = cmd->server;
4369 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
4370 unsigned char *tmp, *host;
4372 uint32 port = SILC_PORT;
4374 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_CONNECT, cmd, 1, 2);
4376 if (!client || cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
4379 /* Check whether client has the permissions. */
4380 if (client->mode == SILC_UMODE_NONE) {
4381 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CONNECT,
4382 SILC_STATUS_ERR_NO_SERVER_PRIV);
4386 if (server->server_type == SILC_ROUTER &&
4387 client->mode & SILC_UMODE_SERVER_OPERATOR) {
4388 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CONNECT,
4389 SILC_STATUS_ERR_NO_ROUTER_PRIV);
4393 /* Get the remote server */
4394 host = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
4396 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CONNECT,
4397 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
4402 tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
4404 SILC_GET32_MSB(port, tmp);
4406 /* Create the connection. It is done with timeout and is async. */
4407 silc_server_create_connection(server, host, port);
4409 /* Send reply to the sender */
4410 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CONNECT,
4414 silc_server_command_free(cmd);
4417 /* Server side of command BAN. This is used to manage the ban list of the
4418 channel. To add clients and remove clients from the ban list. */
4420 SILC_SERVER_CMD_FUNC(ban)
4422 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4423 SilcServer server = cmd->server;
4424 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
4426 SilcChannelEntry channel;
4427 SilcChannelClientEntry chl;
4428 SilcChannelID *channel_id = NULL;
4429 unsigned char *id, *add, *del;
4430 uint32 id_len, tmp_len;
4431 uint16 ident = silc_command_get_ident(cmd->payload);
4433 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
4436 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_BAN, cmd, 0, 3);
4438 /* Get Channel ID */
4439 id = silc_argument_get_arg_type(cmd->args, 1, &id_len);
4441 channel_id = silc_id_payload_parse_id(id, id_len);
4443 silc_server_command_send_status_reply(cmd, SILC_COMMAND_BAN,
4444 SILC_STATUS_ERR_NO_CHANNEL_ID);
4449 /* Get channel entry. The server must know about the channel since the
4450 client is expected to be on the channel. */
4451 channel = silc_idlist_find_channel_by_id(server->local_list,
4454 channel = silc_idlist_find_channel_by_id(server->global_list,
4457 silc_server_command_send_status_reply(cmd, SILC_COMMAND_BAN,
4458 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
4463 /* Check whether this client is on the channel */
4464 if (!silc_server_client_on_channel(client, channel)) {
4465 silc_server_command_send_status_reply(cmd, SILC_COMMAND_BAN,
4466 SILC_STATUS_ERR_NOT_ON_CHANNEL);
4470 /* Get entry to the channel user list */
4471 silc_hash_table_find(channel->user_list, client, NULL, (void *)&chl);
4473 /* The client must be at least channel operator. */
4474 if (!(chl->mode & SILC_CHANNEL_UMODE_CHANOP)) {
4475 silc_server_command_send_status_reply(cmd, SILC_COMMAND_BAN,
4476 SILC_STATUS_ERR_NO_CHANNEL_PRIV);
4480 /* Get the new ban and add it to the ban list */
4481 add = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
4483 if (!channel->ban_list)
4484 channel->ban_list = silc_calloc(tmp_len + 2, sizeof(*channel->ban_list));
4486 channel->ban_list = silc_realloc(channel->ban_list,
4487 sizeof(*channel->ban_list) *
4489 strlen(channel->ban_list) + 2));
4490 if (add[tmp_len - 1] == ',')
4491 add[tmp_len - 1] = '\0';
4493 strncat(channel->ban_list, add, tmp_len);
4494 strncat(channel->ban_list, ",", 1);
4497 /* Get the ban to be removed and remove it from the list */
4498 del = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
4499 if (del && channel->ban_list) {
4500 char *start, *end, *n;
4502 if (!strncmp(channel->ban_list, del, strlen(channel->ban_list) - 1)) {
4503 silc_free(channel->ban_list);
4504 channel->ban_list = NULL;
4506 start = strstr(channel->ban_list, del);
4507 if (start && strlen(start) >= tmp_len) {
4508 end = start + tmp_len;
4509 n = silc_calloc(strlen(channel->ban_list) - tmp_len, sizeof(*n));
4510 strncat(n, channel->ban_list, start - channel->ban_list);
4511 strncat(n, end + 1, ((channel->ban_list + strlen(channel->ban_list)) -
4513 silc_free(channel->ban_list);
4514 channel->ban_list = n;
4519 /* Send the BAN notify type to our primary router. */
4520 if (!server->standalone && (add || del))
4521 silc_server_send_notify_ban(server, server->router->connection,
4522 server->server_type == SILC_ROUTER ?
4523 TRUE : FALSE, channel, add, del);
4525 /* Send the reply back to the client */
4526 if (channel->ban_list)
4528 silc_command_reply_payload_encode_va(SILC_COMMAND_BAN,
4529 SILC_STATUS_OK, ident, 2,
4531 3, channel->ban_list,
4532 strlen(channel->ban_list) - 1);
4535 silc_command_reply_payload_encode_va(SILC_COMMAND_BAN,
4536 SILC_STATUS_OK, ident, 1,
4539 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
4540 packet->data, packet->len, FALSE);
4542 silc_buffer_free(packet);
4546 silc_free(channel_id);
4547 silc_server_command_free(cmd);
4550 /* Server side command of CLOSE. Closes connection to a specified server. */
4552 SILC_SERVER_CMD_FUNC(close)
4554 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4555 SilcServer server = cmd->server;
4556 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
4557 SilcServerEntry server_entry;
4558 SilcSocketConnection sock;
4561 unsigned char *name;
4562 uint32 port = SILC_PORT;
4564 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_CLOSE, cmd, 1, 2);
4566 if (!client || cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
4569 /* Check whether client has the permissions. */
4570 if (client->mode == SILC_UMODE_NONE) {
4571 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CLOSE,
4572 SILC_STATUS_ERR_NO_SERVER_PRIV);
4576 /* Get the remote server */
4577 name = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
4579 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CLOSE,
4580 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
4585 tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
4587 SILC_GET32_MSB(port, tmp);
4589 server_entry = silc_idlist_find_server_by_conn(server->local_list,
4591 if (!server_entry) {
4592 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CLOSE,
4593 SILC_STATUS_ERR_NO_SERVER_ID);
4597 /* Send reply to the sender */
4598 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CLOSE,
4601 /* Close the connection to the server */
4602 sock = (SilcSocketConnection)server_entry->connection;
4603 silc_server_free_sock_user_data(server, sock);
4604 silc_server_close_connection(server, sock);
4607 silc_server_command_free(cmd);
4610 /* Server side command of SHUTDOWN. Shutdowns the server and closes all
4611 active connections. */
4613 SILC_SERVER_CMD_FUNC(shutdown)
4615 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4616 SilcServer server = cmd->server;
4617 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
4619 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_SHUTDOWN, cmd, 0, 0);
4621 if (!client || cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
4624 /* Check whether client has the permission. */
4625 if (client->mode == SILC_UMODE_NONE) {
4626 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SHUTDOWN,
4627 SILC_STATUS_ERR_NO_SERVER_PRIV);
4631 /* Send reply to the sender */
4632 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SHUTDOWN,
4635 /* Then, gracefully, or not, bring the server down. */
4636 silc_server_stop(server);
4640 silc_server_command_free(cmd);
4643 /* Server side command of LEAVE. Removes client from a channel. */
4645 SILC_SERVER_CMD_FUNC(leave)
4647 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4648 SilcServer server = cmd->server;
4649 SilcSocketConnection sock = cmd->sock;
4650 SilcClientEntry id_entry = (SilcClientEntry)cmd->sock->user_data;
4651 SilcChannelID *id = NULL;
4652 SilcChannelEntry channel;
4656 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_LEAVE, cmd, 1, 2);
4658 /* Get Channel ID */
4659 tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
4661 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
4662 SILC_STATUS_ERR_NO_CHANNEL_ID);
4665 id = silc_id_payload_parse_id(tmp, len);
4667 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
4668 SILC_STATUS_ERR_NO_CHANNEL_ID);
4672 /* Get channel entry */
4673 channel = silc_idlist_find_channel_by_id(server->local_list, id, NULL);
4675 channel = silc_idlist_find_channel_by_id(server->global_list, id, NULL);
4677 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
4678 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
4683 /* Check whether this client is on the channel */
4684 if (!silc_server_client_on_channel(id_entry, channel)) {
4685 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
4686 SILC_STATUS_ERR_NOT_ON_CHANNEL);
4690 /* Notify routers that they should remove this client from their list
4691 of clients on the channel. Send LEAVE notify type. */
4692 if (!server->standalone)
4693 silc_server_send_notify_leave(server, server->router->connection,
4694 server->server_type == SILC_ROUTER ?
4695 TRUE : FALSE, channel, id_entry->id);
4697 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
4700 /* Remove client from channel */
4701 if (!silc_server_remove_from_one_channel(server, sock, channel, id_entry,
4703 /* If the channel does not exist anymore we won't send anything */
4706 if (!(channel->mode & SILC_CHANNEL_MODE_PRIVKEY)) {
4707 /* Re-generate channel key */
4708 silc_server_create_channel_key(server, channel, 0);
4710 /* Send the channel key */
4711 silc_server_send_channel_key(server, NULL, channel,
4712 server->server_type == SILC_ROUTER ?
4713 FALSE : !server->standalone);
4719 silc_server_command_free(cmd);
4722 /* Server side of command USERS. Resolves clients and their USERS currently
4723 joined on the requested channel. The list of Client ID's and their modes
4724 on the channel is sent back. */
4726 SILC_SERVER_CMD_FUNC(users)
4728 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4729 SilcServer server = cmd->server;
4730 SilcChannelEntry channel;
4731 SilcChannelID *id = NULL;
4732 SilcBuffer packet, idp;
4733 unsigned char *channel_id;
4734 uint32 channel_id_len;
4735 SilcBuffer client_id_list;
4736 SilcBuffer client_mode_list;
4737 unsigned char lc[4];
4738 uint32 list_count = 0;
4739 uint16 ident = silc_command_get_ident(cmd->payload);
4742 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_USERS, cmd, 1, 2);
4744 /* Get Channel ID */
4745 channel_id = silc_argument_get_arg_type(cmd->args, 1, &channel_id_len);
4747 /* Get channel name */
4748 channel_name = silc_argument_get_arg_type(cmd->args, 2, NULL);
4750 if (!channel_id && !channel_name) {
4751 silc_server_command_send_status_reply(cmd, SILC_COMMAND_USERS,
4752 SILC_STATUS_ERR_NO_CHANNEL_ID);
4757 id = silc_id_payload_parse_id(channel_id, channel_id_len);
4759 silc_server_command_send_status_reply(cmd, SILC_COMMAND_USERS,
4760 SILC_STATUS_ERR_NO_CHANNEL_ID);
4765 /* If we are server and we don't know about this channel we will send
4766 the command to our router. If we know about the channel then we also
4767 have the list of users already. */
4769 channel = silc_idlist_find_channel_by_id(server->local_list, id, NULL);
4771 channel = silc_idlist_find_channel_by_name(server->local_list,
4772 channel_name, NULL);
4775 if (server->server_type == SILC_SERVER && !server->standalone &&
4779 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
4780 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
4782 /* Send USERS command */
4783 silc_server_packet_send(server, server->router->connection,
4784 SILC_PACKET_COMMAND, cmd->packet->flags,
4785 tmpbuf->data, tmpbuf->len, TRUE);
4787 /* Reprocess this packet after received reply */
4788 silc_server_command_pending(server, SILC_COMMAND_USERS,
4789 silc_command_get_ident(cmd->payload),
4790 silc_server_command_destructor,
4791 silc_server_command_users,
4792 silc_server_command_dup(cmd));
4793 cmd->pending = TRUE;
4794 silc_command_set_ident(cmd->payload, ident);
4796 silc_buffer_free(tmpbuf);
4801 /* We are router and we will check the global list as well. */
4803 channel = silc_idlist_find_channel_by_id(server->global_list, id, NULL);
4805 channel = silc_idlist_find_channel_by_name(server->local_list,
4806 channel_name, NULL);
4808 /* Channel really does not exist */
4809 silc_server_command_send_status_reply(cmd, SILC_COMMAND_USERS,
4810 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
4815 /* If the channel is private or secret do not send anything */
4816 if (channel->mode & (SILC_CHANNEL_MODE_PRIVATE | SILC_CHANNEL_MODE_SECRET)) {
4817 silc_server_command_send_status_reply(cmd, SILC_COMMAND_USERS,
4818 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
4822 /* Get the users list */
4823 silc_server_get_users_on_channel(server, channel, &client_id_list,
4824 &client_mode_list, &list_count);
4827 SILC_PUT32_MSB(list_count, lc);
4830 idp = silc_id_payload_encode(channel->id, SILC_ID_CHANNEL);
4831 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_USERS,
4832 SILC_STATUS_OK, ident, 4,
4833 2, idp->data, idp->len,
4835 4, client_id_list->data,
4836 client_id_list->len,
4837 5, client_mode_list->data,
4838 client_mode_list->len);
4839 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
4840 packet->data, packet->len, FALSE);
4842 silc_buffer_free(idp);
4843 silc_buffer_free(packet);
4844 silc_buffer_free(client_id_list);
4845 silc_buffer_free(client_mode_list);
4850 silc_server_command_free(cmd);
4853 /* Server side of command GETKEY. This fetches the client's public key
4854 from the server where to the client is connected. */
4856 SILC_SERVER_CMD_FUNC(getkey)
4858 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4859 SilcServer server = cmd->server;
4861 SilcClientEntry client;
4862 SilcServerEntry server_entry;
4863 SilcClientID *client_id = NULL;
4864 SilcServerID *server_id = NULL;
4865 SilcIDPayload idp = NULL;
4866 uint16 ident = silc_command_get_ident(cmd->payload);
4872 SILC_LOG_DEBUG(("Start"));
4874 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
4876 silc_server_command_send_status_reply(cmd, SILC_COMMAND_GETKEY,
4877 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
4880 idp = silc_id_payload_parse_data(tmp, tmp_len);
4882 silc_server_command_send_status_reply(cmd, SILC_COMMAND_GETKEY,
4883 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
4887 id_type = silc_id_payload_get_type(idp);
4888 if (id_type == SILC_ID_CLIENT) {
4889 client_id = silc_id_payload_get_id(idp);
4891 /* If the client is not found from local list there is no chance it
4892 would be locally connected client so send the command further. */
4893 client = silc_idlist_find_client_by_id(server->local_list,
4896 client = silc_idlist_find_client_by_id(server->global_list,
4899 if ((!client && !cmd->pending && !server->standalone) ||
4900 (client && !client->connection && !cmd->pending &&
4901 !server->standalone) ||
4902 (client && !client->data.public_key && !cmd->pending &&
4903 !server->standalone)) {
4906 SilcSocketConnection dest_sock;
4908 dest_sock = silc_server_get_client_route(server, NULL, 0,
4913 old_ident = silc_command_get_ident(cmd->payload);
4914 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
4915 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
4917 silc_server_packet_send(server, dest_sock,
4918 SILC_PACKET_COMMAND, cmd->packet->flags,
4919 tmpbuf->data, tmpbuf->len, TRUE);
4921 /* Reprocess this packet after received reply from router */
4922 silc_server_command_pending(server, SILC_COMMAND_GETKEY,
4923 silc_command_get_ident(cmd->payload),
4924 silc_server_command_destructor,
4925 silc_server_command_getkey,
4926 silc_server_command_dup(cmd));
4927 cmd->pending = TRUE;
4929 silc_command_set_ident(cmd->payload, old_ident);
4930 silc_buffer_free(tmpbuf);
4934 if (!client && cmd->pending) {
4935 silc_server_command_send_status_reply(cmd, SILC_COMMAND_GETKEY,
4936 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID);
4940 /* The client is locally connected, just get the public key and
4942 tmp = silc_pkcs_public_key_encode(client->data.public_key, &tmp_len);
4943 pk = silc_buffer_alloc(4 + tmp_len);
4944 silc_buffer_pull_tail(pk, SILC_BUFFER_END(pk));
4945 silc_buffer_format(pk,
4946 SILC_STR_UI_SHORT(tmp_len),
4947 SILC_STR_UI_SHORT(SILC_SKE_PK_TYPE_SILC),
4948 SILC_STR_UI_XNSTRING(tmp, tmp_len),
4952 } else if (id_type == SILC_ID_SERVER) {
4953 server_id = silc_id_payload_get_id(idp);
4955 /* If the server is not found from local list there is no chance it
4956 would be locally connected server so send the command further. */
4957 server_entry = silc_idlist_find_server_by_id(server->local_list,
4960 server_entry = silc_idlist_find_server_by_id(server->global_list,
4963 if ((!server_entry && !cmd->pending && !server->standalone) ||
4964 (server_entry && !server_entry->connection && !cmd->pending &&
4965 !server->standalone) ||
4966 (server_entry && !server_entry->data.public_key && !cmd->pending &&
4967 !server->standalone)) {
4971 old_ident = silc_command_get_ident(cmd->payload);
4972 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
4973 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
4975 silc_server_packet_send(server, server->router->connection,
4976 SILC_PACKET_COMMAND, cmd->packet->flags,
4977 tmpbuf->data, tmpbuf->len, TRUE);
4979 /* Reprocess this packet after received reply from router */
4980 silc_server_command_pending(server, SILC_COMMAND_GETKEY,
4981 silc_command_get_ident(cmd->payload),
4982 silc_server_command_destructor,
4983 silc_server_command_getkey,
4984 silc_server_command_dup(cmd));
4985 cmd->pending = TRUE;
4987 silc_command_set_ident(cmd->payload, old_ident);
4988 silc_buffer_free(tmpbuf);
4992 if (!server_entry && cmd->pending) {
4993 silc_server_command_send_status_reply(cmd, SILC_COMMAND_GETKEY,
4994 SILC_STATUS_ERR_NO_SUCH_SERVER_ID);
4998 /* The client is locally connected, just get the public key and
5000 tmp = silc_pkcs_public_key_encode(server_entry->data.public_key, &tmp_len);
5001 pk = silc_buffer_alloc(4 + tmp_len);
5002 silc_buffer_pull_tail(pk, SILC_BUFFER_END(pk));
5003 silc_buffer_format(pk,
5004 SILC_STR_UI_SHORT(tmp_len),
5005 SILC_STR_UI_SHORT(SILC_SKE_PK_TYPE_SILC),
5006 SILC_STR_UI_XNSTRING(tmp, tmp_len),
5013 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
5014 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_GETKEY,
5015 SILC_STATUS_OK, ident, 2,
5017 3, pk->data, pk->len);
5018 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
5019 packet->data, packet->len, FALSE);
5020 silc_buffer_free(packet);
5021 silc_buffer_free(pk);
5025 silc_id_payload_free(idp);
5026 silc_free(client_id);
5027 silc_free(server_id);
5028 silc_server_command_free(cmd);