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_schedule_task_add(server->schedule, sock->sock,
228 silc_server_command_process_timeout,
230 2 - (time(NULL) - client->last_command), 0,
232 SILC_TASK_PRI_NORMAL);
234 silc_schedule_task_add(server->schedule, 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 oidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
1812 /* Remove old cache entry */
1813 silc_idcache_del_by_context(server->local_list->clients, client);
1816 silc_free(client->id);
1818 /* Save the nickname as this client is our local client */
1819 silc_free(client->nickname);
1821 client->nickname = strdup(nick);
1822 client->id = new_id;
1824 /* Update client cache */
1825 silc_idcache_add(server->local_list->clients, client->nickname,
1826 client->id, (void *)client, FALSE);
1828 nidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
1830 /* Send NICK_CHANGE notify to the client's channels */
1831 silc_server_send_notify_on_channels(server, NULL, client,
1832 SILC_NOTIFY_TYPE_NICK_CHANGE, 2,
1833 oidp->data, oidp->len,
1834 nidp->data, nidp->len);
1836 /* Send the new Client ID as reply command back to client */
1837 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_NICK,
1838 SILC_STATUS_OK, ident, 1,
1839 2, nidp->data, nidp->len);
1840 silc_server_packet_send(cmd->server, cmd->sock, SILC_PACKET_COMMAND_REPLY,
1841 0, packet->data, packet->len, FALSE);
1843 silc_buffer_free(packet);
1844 silc_buffer_free(nidp);
1845 silc_buffer_free(oidp);
1848 silc_server_command_free(cmd);
1851 /* Sends the LIST command reply */
1854 silc_server_command_list_send_reply(SilcServerCommandContext cmd,
1855 SilcChannelEntry *lch,
1857 SilcChannelEntry *gch,
1861 SilcBuffer packet, idp;
1862 SilcChannelEntry entry;
1863 SilcCommandStatus status;
1864 uint16 ident = silc_command_get_ident(cmd->payload);
1866 unsigned char usercount[4];
1869 for (i = 0; i < lch_count; i++)
1870 if (lch[i]->mode & SILC_CHANNEL_MODE_SECRET)
1872 for (i = 0; i < gch_count; i++)
1873 if (gch[i]->mode & SILC_CHANNEL_MODE_SECRET)
1876 status = SILC_STATUS_OK;
1877 if ((lch_count + gch_count) > 1)
1878 status = SILC_STATUS_LIST_START;
1881 for (i = 0; i < lch_count; i++) {
1888 status = SILC_STATUS_LIST_ITEM;
1890 if (i == lch_count - 1 && gch_count)
1892 if (lch_count > 1 && i == lch_count - 1)
1893 status = SILC_STATUS_LIST_END;
1895 idp = silc_id_payload_encode(entry->id, SILC_ID_CHANNEL);
1897 if (entry->mode & SILC_CHANNEL_MODE_PRIVATE) {
1898 topic = "*private*";
1899 memset(usercount, 0, sizeof(usercount));
1901 topic = entry->topic;
1902 users = silc_hash_table_count(entry->user_list);
1903 SILC_PUT32_MSB(users, usercount);
1906 /* Send the reply */
1909 silc_command_reply_payload_encode_va(SILC_COMMAND_LIST,
1911 2, idp->data, idp->len,
1912 3, entry->channel_name,
1913 strlen(entry->channel_name),
1914 4, topic, strlen(topic),
1918 silc_command_reply_payload_encode_va(SILC_COMMAND_LIST,
1920 2, idp->data, idp->len,
1921 3, entry->channel_name,
1922 strlen(entry->channel_name),
1924 silc_server_packet_send(cmd->server, cmd->sock,
1925 SILC_PACKET_COMMAND_REPLY, 0, packet->data,
1926 packet->len, FALSE);
1927 silc_buffer_free(packet);
1928 silc_buffer_free(idp);
1931 status = i ? SILC_STATUS_LIST_ITEM : SILC_STATUS_OK;
1934 for (i = 0; i < gch_count; i++) {
1941 status = SILC_STATUS_LIST_ITEM;
1943 if (gch_count > 1 && i == lch_count - 1)
1944 status = SILC_STATUS_LIST_END;
1946 idp = silc_id_payload_encode(entry->id, SILC_ID_CHANNEL);
1948 if (entry->mode & SILC_CHANNEL_MODE_PRIVATE) {
1949 topic = "*private*";
1950 memset(usercount, 0, sizeof(usercount));
1952 topic = entry->topic;
1953 users = silc_hash_table_count(entry->user_list);
1954 SILC_PUT32_MSB(users, usercount);
1957 /* Send the reply */
1960 silc_command_reply_payload_encode_va(SILC_COMMAND_LIST,
1962 2, idp->data, idp->len,
1963 3, entry->channel_name,
1964 strlen(entry->channel_name),
1965 4, topic, strlen(topic),
1969 silc_command_reply_payload_encode_va(SILC_COMMAND_LIST,
1971 2, idp->data, idp->len,
1972 3, entry->channel_name,
1973 strlen(entry->channel_name),
1975 silc_server_packet_send(cmd->server, cmd->sock,
1976 SILC_PACKET_COMMAND_REPLY, 0, packet->data,
1977 packet->len, FALSE);
1978 silc_buffer_free(packet);
1979 silc_buffer_free(idp);
1983 /* Server side of LIST command. This lists the channel of the requested
1984 server. Secret channels are not listed. */
1986 SILC_SERVER_CMD_FUNC(list)
1988 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
1989 SilcServer server = cmd->server;
1990 SilcChannelID *channel_id = NULL;
1993 SilcChannelEntry *lchannels = NULL, *gchannels = NULL;
1994 uint32 lch_count = 0, gch_count = 0;
1996 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_LIST, cmd, 0, 2);
1998 /* Get Channel ID */
1999 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
2001 channel_id = silc_id_payload_parse_id(tmp, tmp_len);
2003 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LIST,
2004 SILC_STATUS_ERR_NO_CHANNEL_ID);
2009 /* Get the channels from local list */
2010 lchannels = silc_idlist_get_channels(server->local_list, channel_id,
2013 /* Get the channels from global list if we are router */
2014 if (server->server_type == SILC_ROUTER)
2015 gchannels = silc_idlist_get_channels(server->global_list, channel_id,
2018 /* Send the reply */
2019 silc_server_command_list_send_reply(cmd, lchannels, lch_count,
2020 gchannels, gch_count);
2023 silc_server_command_free(cmd);
2026 /* Server side of TOPIC command. Sets topic for channel and/or returns
2027 current topic to client. */
2029 SILC_SERVER_CMD_FUNC(topic)
2031 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2032 SilcServer server = cmd->server;
2033 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
2034 SilcChannelID *channel_id;
2035 SilcChannelEntry channel;
2036 SilcChannelClientEntry chl;
2037 SilcBuffer packet, idp;
2039 uint32 argc, tmp_len;
2040 uint16 ident = silc_command_get_ident(cmd->payload);
2042 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_TOPIC, cmd, 1, 2);
2044 argc = silc_argument_get_arg_num(cmd->args);
2046 /* Get Channel ID */
2047 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
2049 silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
2050 SILC_STATUS_ERR_NO_CHANNEL_ID);
2053 channel_id = silc_id_payload_parse_id(tmp, tmp_len);
2055 silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
2056 SILC_STATUS_ERR_NO_CHANNEL_ID);
2060 /* Check whether the channel exists */
2061 channel = silc_idlist_find_channel_by_id(server->local_list,
2064 channel = silc_idlist_find_channel_by_id(server->global_list,
2067 silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
2068 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
2075 tmp = silc_argument_get_arg_type(cmd->args, 2, NULL);
2077 silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
2078 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
2082 if (strlen(tmp) > 256) {
2083 silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
2084 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
2088 /* See whether the client is on channel and has rights to change topic */
2089 if (!silc_hash_table_find(channel->user_list, client, NULL,
2091 silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
2092 SILC_STATUS_ERR_NOT_ON_CHANNEL);
2096 if (chl->mode == SILC_CHANNEL_UMODE_NONE) {
2097 if (channel->mode & SILC_CHANNEL_MODE_TOPIC) {
2098 silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
2099 SILC_STATUS_ERR_NO_CHANNEL_PRIV);
2104 /* Set the topic for channel */
2106 silc_free(channel->topic);
2107 channel->topic = strdup(tmp);
2109 /* Send TOPIC_SET notify type to the network */
2110 if (!server->standalone)
2111 silc_server_send_notify_topic_set(server, server->router->connection,
2112 server->server_type == SILC_ROUTER ?
2113 TRUE : FALSE, channel, client->id,
2116 idp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
2118 /* Send notify about topic change to all clients on the channel */
2119 silc_server_send_notify_to_channel(server, NULL, channel, TRUE,
2120 SILC_NOTIFY_TYPE_TOPIC_SET, 2,
2121 idp->data, idp->len,
2122 channel->topic, strlen(channel->topic));
2123 silc_buffer_free(idp);
2126 /* Send the topic to client as reply packet */
2127 idp = silc_id_payload_encode(channel_id, SILC_ID_CHANNEL);
2129 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_TOPIC,
2130 SILC_STATUS_OK, ident, 2,
2131 2, idp->data, idp->len,
2133 strlen(channel->topic));
2135 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_TOPIC,
2136 SILC_STATUS_OK, ident, 1,
2137 2, idp->data, idp->len);
2138 silc_server_packet_send(cmd->server, cmd->sock, SILC_PACKET_COMMAND_REPLY,
2139 0, packet->data, packet->len, FALSE);
2141 silc_buffer_free(packet);
2142 silc_buffer_free(idp);
2143 silc_free(channel_id);
2146 silc_server_command_free(cmd);
2149 /* Server side of INVITE command. Invites some client to join some channel.
2150 This command is also used to manage the invite list of the channel. */
2152 SILC_SERVER_CMD_FUNC(invite)
2154 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2155 SilcServer server = cmd->server;
2156 SilcSocketConnection sock = cmd->sock, dest_sock;
2157 SilcChannelClientEntry chl;
2158 SilcClientEntry sender, dest;
2159 SilcClientID *dest_id = NULL;
2160 SilcChannelEntry channel;
2161 SilcChannelID *channel_id = NULL;
2162 SilcIDListData idata;
2163 SilcBuffer idp, idp2, packet;
2164 unsigned char *tmp, *add, *del;
2166 uint16 ident = silc_command_get_ident(cmd->payload);
2168 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_INVITE, cmd, 1, 4);
2170 /* Get Channel ID */
2171 tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
2173 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
2174 SILC_STATUS_ERR_NO_CHANNEL_ID);
2177 channel_id = silc_id_payload_parse_id(tmp, len);
2179 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
2180 SILC_STATUS_ERR_NO_CHANNEL_ID);
2184 /* Get the channel entry */
2185 channel = silc_idlist_find_channel_by_id(server->local_list,
2188 channel = silc_idlist_find_channel_by_id(server->global_list,
2191 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
2192 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
2197 /* Check whether the sender of this command is on the channel. */
2198 sender = (SilcClientEntry)sock->user_data;
2199 if (!silc_server_client_on_channel(sender, channel)) {
2200 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
2201 SILC_STATUS_ERR_NOT_ON_CHANNEL);
2205 /* Check whether the channel is invite-only channel. If yes then the
2206 sender of this command must be at least channel operator. */
2207 if (channel->mode & SILC_CHANNEL_MODE_INVITE) {
2208 silc_hash_table_find(channel->user_list, sender, NULL, (void *)&chl);
2209 if (chl->mode == SILC_CHANNEL_UMODE_NONE) {
2210 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
2211 SILC_STATUS_ERR_NO_CHANNEL_PRIV);
2216 /* Get destination client ID */
2217 tmp = silc_argument_get_arg_type(cmd->args, 2, &len);
2221 dest_id = silc_id_payload_parse_id(tmp, len);
2223 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
2224 SILC_STATUS_ERR_NO_CLIENT_ID);
2228 /* Get the client entry */
2229 dest = silc_server_get_client_resolve(server, dest_id);
2231 if (server->server_type == SILC_ROUTER) {
2232 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
2233 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID);
2237 /* The client info is being resolved. Reprocess this packet after
2238 receiving the reply to the query. */
2239 silc_server_command_pending(server, SILC_COMMAND_WHOIS,
2241 silc_server_command_destructor,
2242 silc_server_command_invite,
2243 silc_server_command_dup(cmd));
2244 cmd->pending = TRUE;
2245 silc_free(channel_id);
2250 /* Check whether the requested client is already on the channel. */
2251 if (silc_server_client_on_channel(dest, channel)) {
2252 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
2253 SILC_STATUS_ERR_USER_ON_CHANNEL);
2257 /* Get route to the client */
2258 dest_sock = silc_server_get_client_route(server, NULL, 0, dest_id, &idata);
2260 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
2261 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID);
2265 memset(invite, 0, sizeof(invite));
2266 strncat(invite, dest->nickname, strlen(dest->nickname));
2267 strncat(invite, "!", 1);
2268 strncat(invite, dest->username, strlen(dest->username));
2269 if (!strchr(dest->username, '@')) {
2270 strncat(invite, "@", 1);
2271 strncat(invite, cmd->sock->hostname, strlen(cmd->sock->hostname));
2274 len = strlen(invite);
2275 if (!channel->invite_list)
2276 channel->invite_list = silc_calloc(len + 2,
2277 sizeof(*channel->invite_list));
2279 channel->invite_list = silc_realloc(channel->invite_list,
2280 sizeof(*channel->invite_list) *
2282 strlen(channel->invite_list) + 2));
2283 strncat(channel->invite_list, invite, len);
2284 strncat(channel->invite_list, ",", 1);
2286 /* Send notify to the client that is invited to the channel */
2287 idp = silc_id_payload_encode(channel_id, SILC_ID_CHANNEL);
2288 idp2 = silc_id_payload_encode(sender->id, SILC_ID_CLIENT);
2289 silc_server_send_notify_dest(server, dest_sock, FALSE, dest_id,
2291 SILC_NOTIFY_TYPE_INVITE, 3,
2292 idp->data, idp->len,
2293 channel->channel_name,
2294 strlen(channel->channel_name),
2295 idp2->data, idp2->len);
2296 silc_buffer_free(idp);
2297 silc_buffer_free(idp2);
2300 /* Add the client to the invite list of the channel */
2301 add = silc_argument_get_arg_type(cmd->args, 3, &len);
2303 if (!channel->invite_list)
2304 channel->invite_list = silc_calloc(len + 2,
2305 sizeof(*channel->invite_list));
2307 channel->invite_list = silc_realloc(channel->invite_list,
2308 sizeof(*channel->invite_list) *
2310 strlen(channel->invite_list) + 2));
2311 if (add[len - 1] == ',')
2312 add[len - 1] = '\0';
2314 strncat(channel->invite_list, add, len);
2315 strncat(channel->invite_list, ",", 1);
2318 /* Get the invite to be removed and remove it from the list */
2319 del = silc_argument_get_arg_type(cmd->args, 4, &len);
2320 if (del && channel->invite_list) {
2321 char *start, *end, *n;
2323 if (!strncmp(channel->invite_list, del,
2324 strlen(channel->invite_list) - 1)) {
2325 silc_free(channel->invite_list);
2326 channel->invite_list = NULL;
2328 start = strstr(channel->invite_list, del);
2329 if (start && strlen(start) >= len) {
2331 n = silc_calloc(strlen(channel->invite_list) - len, sizeof(*n));
2332 strncat(n, channel->invite_list, start - channel->invite_list);
2333 strncat(n, end + 1, ((channel->invite_list +
2334 strlen(channel->invite_list)) - end) - 1);
2335 silc_free(channel->invite_list);
2336 channel->invite_list = n;
2341 /* Send notify to the primary router */
2342 if (!server->standalone)
2343 silc_server_send_notify_invite(server, server->router->connection,
2344 server->server_type == SILC_ROUTER ?
2345 TRUE : FALSE, channel,
2346 sender->id, add, del);
2348 /* Send command reply */
2349 tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
2353 silc_command_reply_payload_encode_va(SILC_COMMAND_INVITE,
2354 SILC_STATUS_OK, ident, 2,
2356 3, channel->invite_list,
2357 channel->invite_list ?
2358 strlen(channel->invite_list) : 0);
2361 silc_command_reply_payload_encode_va(SILC_COMMAND_INVITE,
2362 SILC_STATUS_OK, ident, 1,
2364 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
2365 packet->data, packet->len, FALSE);
2366 silc_buffer_free(packet);
2372 silc_free(channel_id);
2373 silc_server_command_free(cmd);
2378 SilcSocketConnection sock;
2382 /* Quits connection to client. This gets called if client won't
2383 close the connection even when it has issued QUIT command. */
2385 SILC_TASK_CALLBACK(silc_server_command_quit_cb)
2387 QuitInternal q = (QuitInternal)context;
2389 /* Free all client specific data, such as client entry and entires
2390 on channels this client may be on. */
2391 silc_server_free_client_data(q->server, q->sock, q->sock->user_data,
2393 q->sock->user_data = NULL;
2395 /* Close the connection on our side */
2396 silc_server_close_connection(q->server, q->sock);
2398 silc_free(q->signoff);
2402 /* Quits SILC session. This is the normal way to disconnect client. */
2404 SILC_SERVER_CMD_FUNC(quit)
2406 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2407 SilcServer server = cmd->server;
2408 SilcSocketConnection sock = cmd->sock;
2410 unsigned char *tmp = NULL;
2413 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_QUIT, cmd, 0, 1);
2415 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
2418 /* Get destination ID */
2419 tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
2423 q = silc_calloc(1, sizeof(*q));
2426 q->signoff = tmp ? strdup(tmp) : NULL;
2428 /* We quit the connection with little timeout */
2429 silc_schedule_task_add(server->schedule, sock->sock,
2430 silc_server_command_quit_cb, (void *)q,
2431 0, 200000, SILC_TASK_TIMEOUT, SILC_TASK_PRI_LOW);
2434 silc_server_command_free(cmd);
2437 /* Server side of command KILL. This command is used by router operator
2438 to remove an client from the SILC Network temporarily. */
2440 SILC_SERVER_CMD_FUNC(kill)
2442 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2443 SilcServer server = cmd->server;
2444 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
2445 SilcClientEntry remote_client;
2446 SilcClientID *client_id;
2447 unsigned char *tmp, *comment;
2448 uint32 tmp_len, tmp_len2;
2450 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_KILL, cmd, 1, 2);
2452 if (!client || cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
2455 /* KILL command works only on router */
2456 if (server->server_type != SILC_ROUTER) {
2457 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
2458 SILC_STATUS_ERR_NO_ROUTER_PRIV);
2462 /* Check whether client has the permissions. */
2463 if (!(client->mode & SILC_UMODE_ROUTER_OPERATOR)) {
2464 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
2465 SILC_STATUS_ERR_NO_ROUTER_PRIV);
2469 /* Get the client ID */
2470 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
2472 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
2473 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
2476 client_id = silc_id_payload_parse_id(tmp, tmp_len);
2478 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
2479 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID);
2483 /* Get the client entry */
2484 remote_client = silc_idlist_find_client_by_id(server->local_list,
2486 if (!remote_client) {
2487 remote_client = silc_idlist_find_client_by_id(server->global_list,
2489 if (!remote_client) {
2490 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
2491 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID);
2496 if (remote_client->data.registered == FALSE) {
2497 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
2498 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID);
2503 comment = silc_argument_get_arg_type(cmd->args, 2, &tmp_len2);
2507 /* Send reply to the sender */
2508 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
2511 /* Send the KILL notify packets. First send it to the channel, then
2512 to our primary router and then directly to the client who is being
2513 killed right now. */
2515 /* Send KILLED notify to the channels. It is not sent to the client
2516 as it will be sent differently destined directly to the client and not
2518 silc_server_send_notify_on_channels(server, remote_client,
2519 remote_client, SILC_NOTIFY_TYPE_KILLED,
2522 comment, comment ? tmp_len2 : 0);
2524 /* Send KILLED notify to primary route */
2525 if (!server->standalone)
2526 silc_server_send_notify_killed(server, server->router->connection, TRUE,
2527 remote_client->id, comment);
2529 /* Send KILLED notify to the client directly */
2530 silc_server_send_notify_killed(server, remote_client->connection ?
2531 remote_client->connection :
2532 remote_client->router->connection, FALSE,
2533 remote_client->id, comment);
2535 /* Remove the client from all channels. This generates new keys to the
2536 channels as well. */
2537 silc_server_remove_from_channels(server, NULL, remote_client, FALSE,
2540 /* Remove the client entry, If it is locally connected then we will also
2541 disconnect the client here */
2542 if (remote_client->data.registered && remote_client->connection) {
2543 /* Remove locally conneted client */
2544 SilcSocketConnection sock = remote_client->connection;
2545 silc_server_free_client_data(server, sock, remote_client, FALSE, NULL);
2546 silc_server_close_connection(server, sock);
2548 /* Remove remote client */
2549 if (!silc_idlist_del_client(server->global_list, remote_client))
2550 silc_idlist_del_client(server->local_list, remote_client);
2554 silc_server_command_free(cmd);
2557 /* Server side of command INFO. This sends information about us to
2558 the client. If client requested specific server we will send the
2559 command to that server. */
2561 SILC_SERVER_CMD_FUNC(info)
2563 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2564 SilcServer server = cmd->server;
2565 SilcBuffer packet, idp;
2568 char *dest_server, *server_info = NULL, *server_name;
2569 uint16 ident = silc_command_get_ident(cmd->payload);
2570 SilcServerEntry entry = NULL;
2571 SilcServerID *server_id = NULL;
2573 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_INFO, cmd, 0, 2);
2575 /* Get server name */
2576 dest_server = silc_argument_get_arg_type(cmd->args, 1, NULL);
2579 tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
2581 server_id = silc_id_payload_parse_id(tmp, tmp_len);
2583 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INFO,
2584 SILC_STATUS_ERR_NO_SERVER_ID);
2590 /* Check whether we have this server cached */
2591 entry = silc_idlist_find_server_by_id(server->local_list,
2594 entry = silc_idlist_find_server_by_id(server->global_list,
2596 if (!entry && server->server_type == SILC_ROUTER) {
2597 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INFO,
2598 SILC_STATUS_ERR_NO_SUCH_SERVER);
2604 if ((!dest_server && !server_id && !entry) || (entry &&
2605 entry == server->id_entry) ||
2606 (dest_server && !cmd->pending &&
2607 !strncasecmp(dest_server, server->server_name, strlen(dest_server)))) {
2608 /* Send our reply */
2609 char info_string[256];
2611 memset(info_string, 0, sizeof(info_string));
2612 snprintf(info_string, sizeof(info_string),
2613 "location: %s server: %s admin: %s <%s>",
2614 server->config->admin_info->location,
2615 server->config->admin_info->server_type,
2616 server->config->admin_info->admin_name,
2617 server->config->admin_info->admin_email);
2619 server_info = info_string;
2620 entry = server->id_entry;
2622 /* Check whether we have this server cached */
2623 if (!entry && dest_server) {
2624 entry = silc_idlist_find_server_by_name(server->global_list,
2627 entry = silc_idlist_find_server_by_name(server->local_list,
2632 if (!cmd->pending &&
2633 server->server_type == SILC_ROUTER && entry && !entry->server_info) {
2634 /* Send to the server */
2638 old_ident = silc_command_get_ident(cmd->payload);
2639 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
2640 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
2642 silc_server_packet_send(server, entry->connection,
2643 SILC_PACKET_COMMAND, cmd->packet->flags,
2644 tmpbuf->data, tmpbuf->len, TRUE);
2646 /* Reprocess this packet after received reply from router */
2647 silc_server_command_pending(server, SILC_COMMAND_INFO,
2648 silc_command_get_ident(cmd->payload),
2649 silc_server_command_destructor,
2650 silc_server_command_info,
2651 silc_server_command_dup(cmd));
2652 cmd->pending = TRUE;
2653 silc_command_set_ident(cmd->payload, old_ident);
2654 silc_buffer_free(tmpbuf);
2658 if (!entry && !cmd->pending && !server->standalone) {
2659 /* Send to the primary router */
2663 old_ident = silc_command_get_ident(cmd->payload);
2664 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
2665 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
2667 silc_server_packet_send(server, server->router->connection,
2668 SILC_PACKET_COMMAND, cmd->packet->flags,
2669 tmpbuf->data, tmpbuf->len, TRUE);
2671 /* Reprocess this packet after received reply from router */
2672 silc_server_command_pending(server, SILC_COMMAND_INFO,
2673 silc_command_get_ident(cmd->payload),
2674 silc_server_command_destructor,
2675 silc_server_command_info,
2676 silc_server_command_dup(cmd));
2677 cmd->pending = TRUE;
2678 silc_command_set_ident(cmd->payload, old_ident);
2679 silc_buffer_free(tmpbuf);
2685 silc_free(server_id);
2688 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INFO,
2689 SILC_STATUS_ERR_NO_SUCH_SERVER);
2693 idp = silc_id_payload_encode(entry->id, SILC_ID_SERVER);
2695 server_info = entry->server_info;
2696 server_name = entry->server_name;
2698 /* Send the reply */
2700 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_INFO,
2701 SILC_STATUS_OK, ident, 3,
2702 2, idp->data, idp->len,
2704 strlen(server_name),
2706 strlen(server_info));
2708 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_INFO,
2709 SILC_STATUS_OK, ident, 2,
2710 2, idp->data, idp->len,
2712 strlen(server_name));
2713 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
2714 packet->data, packet->len, FALSE);
2716 silc_buffer_free(packet);
2717 silc_buffer_free(idp);
2720 silc_server_command_free(cmd);
2723 /* Server side of command PING. This just replies to the ping. */
2725 SILC_SERVER_CMD_FUNC(ping)
2727 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2728 SilcServer server = cmd->server;
2733 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_INFO, cmd, 1, 2);
2736 tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
2738 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PING,
2739 SILC_STATUS_ERR_NO_SERVER_ID);
2742 id = silc_id_str2id(tmp, len, SILC_ID_SERVER);
2746 if (SILC_ID_SERVER_COMPARE(id, server->id)) {
2747 /* Send our reply */
2748 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PING,
2751 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PING,
2752 SILC_STATUS_ERR_NO_SUCH_SERVER);
2759 silc_server_command_free(cmd);
2762 /* Internal routine to join channel. The channel sent to this function
2763 has been either created or resolved from ID lists. This joins the sent
2764 client to the channel. */
2766 static void silc_server_command_join_channel(SilcServer server,
2767 SilcServerCommandContext cmd,
2768 SilcChannelEntry channel,
2769 SilcClientID *client_id,
2773 SilcSocketConnection sock = cmd->sock;
2775 uint32 tmp_len, user_count;
2776 unsigned char *passphrase = NULL, mode[4], tmp2[4], tmp3[4];
2777 SilcClientEntry client;
2778 SilcChannelClientEntry chl;
2779 SilcBuffer reply, chidp, clidp, keyp = NULL, user_list, mode_list;
2780 uint16 ident = silc_command_get_ident(cmd->payload);
2781 char check[512], check2[512];
2783 SILC_LOG_DEBUG(("Start"));
2788 /* Get the client entry */
2789 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT) {
2790 client = (SilcClientEntry)sock->user_data;
2792 client = silc_server_get_client_resolve(server, client_id);
2797 /* The client info is being resolved. Reprocess this packet after
2798 receiving the reply to the query. */
2799 silc_server_command_pending(server, SILC_COMMAND_WHOIS,
2800 server->cmd_ident, NULL,
2801 silc_server_command_join,
2802 silc_server_command_dup(cmd));
2803 cmd->pending = TRUE;
2807 cmd->pending = FALSE;
2811 * Check channel modes
2814 memset(check, 0, sizeof(check));
2815 memset(check2, 0, sizeof(check2));
2816 strncat(check, client->nickname, strlen(client->nickname));
2817 strncat(check, "!", 1);
2818 strncat(check, client->username, strlen(client->username));
2819 if (!strchr(client->username, '@')) {
2820 strncat(check, "@", 1);
2821 strncat(check, cmd->sock->hostname, strlen(cmd->sock->hostname));
2824 strncat(check2, client->nickname, strlen(client->nickname));
2825 if (!strchr(client->nickname, '@')) {
2826 strncat(check2, "@", 1);
2827 strncat(check2, server->server_name, strlen(server->server_name));
2829 strncat(check2, "!", 1);
2830 strncat(check2, client->username, strlen(client->username));
2831 if (!strchr(client->username, '@')) {
2832 strncat(check2, "@", 1);
2833 strncat(check2, cmd->sock->hostname, strlen(cmd->sock->hostname));
2836 /* Check invite list if channel is invite-only channel */
2837 if (channel->mode & SILC_CHANNEL_MODE_INVITE) {
2838 if (!channel->invite_list ||
2839 (!silc_string_match(channel->invite_list, check) &&
2840 !silc_string_match(channel->invite_list, check2))) {
2841 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2842 SILC_STATUS_ERR_NOT_INVITED);
2847 /* Check ban list if it exists. If the client's nickname, server,
2848 username and/or hostname is in the ban list the access to the
2849 channel is denied. */
2850 if (channel->ban_list) {
2851 if (silc_string_match(channel->ban_list, check) ||
2852 silc_string_match(channel->ban_list, check2)) {
2853 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2854 SILC_STATUS_ERR_BANNED_FROM_CHANNEL);
2859 /* Get passphrase */
2860 tmp = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
2862 passphrase = silc_calloc(tmp_len, sizeof(*passphrase));
2863 memcpy(passphrase, tmp, tmp_len);
2866 /* Check the channel passphrase if set. */
2867 if (channel->mode & SILC_CHANNEL_MODE_PASSPHRASE) {
2868 if (!passphrase || memcmp(channel->passphrase, passphrase,
2869 strlen(channel->passphrase))) {
2870 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2871 SILC_STATUS_ERR_BAD_PASSWORD);
2876 /* Check user count limit if set. */
2877 if (channel->mode & SILC_CHANNEL_MODE_ULIMIT) {
2878 if (silc_hash_table_count(channel->user_list) + 1 >
2879 channel->user_limit) {
2880 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2881 SILC_STATUS_ERR_CHANNEL_IS_FULL);
2887 * Client is allowed to join to the channel. Make it happen.
2890 /* Check whether the client already is on the channel */
2891 if (silc_server_client_on_channel(client, channel)) {
2892 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2893 SILC_STATUS_ERR_USER_ON_CHANNEL);
2897 /* Generate new channel key as protocol dictates */
2898 if ((!created && silc_hash_table_count(channel->user_list) > 0) ||
2899 !channel->channel_key)
2900 silc_server_create_channel_key(server, channel, 0);
2902 /* Send the channel key. This is broadcasted to the channel but is not
2903 sent to the client who is joining to the channel. */
2904 if (!(channel->mode & SILC_CHANNEL_MODE_PRIVKEY))
2905 silc_server_send_channel_key(server, NULL, channel,
2906 server->server_type == SILC_ROUTER ?
2907 FALSE : !server->standalone);
2909 /* Join the client to the channel by adding it to channel's user list.
2910 Add also the channel to client entry's channels list for fast cross-
2912 chl = silc_calloc(1, sizeof(*chl));
2914 chl->client = client;
2915 chl->channel = channel;
2916 silc_hash_table_add(channel->user_list, client, chl);
2917 silc_hash_table_add(client->channels, channel, chl);
2919 /* Get users on the channel */
2920 silc_server_get_users_on_channel(server, channel, &user_list, &mode_list,
2923 /* Encode Client ID Payload of the original client who wants to join */
2924 clidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
2926 /* Encode command reply packet */
2927 chidp = silc_id_payload_encode(channel->id, SILC_ID_CHANNEL);
2928 SILC_PUT32_MSB(channel->mode, mode);
2929 SILC_PUT32_MSB(created, tmp2);
2930 SILC_PUT32_MSB(user_count, tmp3);
2932 if (!(channel->mode & SILC_CHANNEL_MODE_PRIVKEY)) {
2933 tmp = silc_id_id2str(channel->id, SILC_ID_CHANNEL);
2934 keyp = silc_channel_key_payload_encode(SILC_ID_CHANNEL_LEN, tmp,
2935 strlen(channel->channel_key->
2937 channel->channel_key->cipher->name,
2938 channel->key_len / 8, channel->key);
2943 silc_command_reply_payload_encode_va(SILC_COMMAND_JOIN,
2944 SILC_STATUS_OK, ident, 13,
2945 2, channel->channel_name,
2946 strlen(channel->channel_name),
2947 3, chidp->data, chidp->len,
2948 4, clidp->data, clidp->len,
2951 7, keyp ? keyp->data : NULL,
2952 keyp ? keyp->len : 0,
2953 8, channel->ban_list,
2955 strlen(channel->ban_list) : 0,
2956 9, channel->invite_list,
2957 channel->invite_list ?
2958 strlen(channel->invite_list) : 0,
2961 strlen(channel->topic) : 0,
2962 11, channel->hmac->hmac->name,
2963 strlen(channel->hmac->hmac->name),
2965 13, user_list->data, user_list->len,
2966 14, mode_list->data,
2969 /* Send command reply */
2970 silc_server_packet_send(server, sock, SILC_PACKET_COMMAND_REPLY, 0,
2971 reply->data, reply->len, FALSE);
2973 if (!cmd->pending) {
2974 /* Send JOIN notify to locally connected clients on the channel */
2975 silc_server_send_notify_to_channel(server, NULL, channel, FALSE,
2976 SILC_NOTIFY_TYPE_JOIN, 2,
2977 clidp->data, clidp->len,
2978 chidp->data, chidp->len);
2980 /* Send JOIN notify packet to our primary router */
2981 if (!server->standalone)
2982 silc_server_send_notify_join(server, server->router->connection,
2983 server->server_type == SILC_ROUTER ?
2984 TRUE : FALSE, channel, client->id);
2987 silc_buffer_free(reply);
2988 silc_buffer_free(clidp);
2989 silc_buffer_free(chidp);
2990 silc_buffer_free(keyp);
2991 silc_buffer_free(user_list);
2992 silc_buffer_free(mode_list);
2996 silc_free(passphrase);
2999 /* Server side of command JOIN. Joins client into requested channel. If
3000 the channel does not exist it will be created. */
3002 SILC_SERVER_CMD_FUNC(join)
3004 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
3005 SilcServer server = cmd->server;
3007 char *tmp, *channel_name = NULL, *cipher, *hmac;
3008 SilcChannelEntry channel;
3010 int created = FALSE;
3011 SilcClientID *client_id;
3013 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_JOIN, cmd, 1, 4);
3015 /* Get channel name */
3016 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
3018 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
3019 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3024 if (strlen(channel_name) > 256)
3025 channel_name[255] = '\0';
3027 if (silc_server_command_bad_chars(channel_name) == TRUE) {
3028 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
3029 SILC_STATUS_ERR_BAD_CHANNEL);
3033 /* Get Client ID of the client who is joining to the channel */
3034 tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
3036 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
3037 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3040 client_id = silc_id_payload_parse_id(tmp, tmp_len);
3042 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
3043 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3047 /* Get cipher and hmac name */
3048 cipher = silc_argument_get_arg_type(cmd->args, 4, NULL);
3049 hmac = silc_argument_get_arg_type(cmd->args, 5, NULL);
3051 /* See if the channel exists */
3052 channel = silc_idlist_find_channel_by_name(server->local_list,
3053 channel_name, NULL);
3055 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT) {
3056 /* If this is coming from client the Client ID in the command packet must
3057 be same as the client's ID. */
3058 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT) {
3059 SilcClientEntry entry = (SilcClientEntry)cmd->sock->user_data;
3060 if (!SILC_ID_CLIENT_COMPARE(entry->id, client_id)) {
3061 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
3062 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3067 if (!channel || !channel->id) {
3068 /* Channel not found */
3070 /* If we are standalone server we don't have a router, we just create
3071 the channel by ourselves. */
3072 if (server->standalone) {
3073 channel = silc_server_create_new_channel(server, server->id, cipher,
3074 hmac, channel_name, TRUE);
3076 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
3077 SILC_STATUS_ERR_UNKNOWN_ALGORITHM);
3081 umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
3086 /* The channel does not exist on our server. If we are normal server
3087 we will send JOIN command to our router which will handle the
3088 joining procedure (either creates the channel if it doesn't exist
3089 or joins the client to it). */
3090 if (server->server_type == SILC_SERVER) {
3094 /* If this is pending command callback then we've resolved
3095 it and it didn't work, return since we've notified the
3096 client already in the command reply callback. */
3100 old_ident = silc_command_get_ident(cmd->payload);
3101 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
3102 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
3104 /* Send JOIN command to our router */
3105 silc_server_packet_send(server, (SilcSocketConnection)
3106 server->router->connection,
3107 SILC_PACKET_COMMAND, cmd->packet->flags,
3108 tmpbuf->data, tmpbuf->len, TRUE);
3110 /* Reprocess this packet after received reply from router */
3111 silc_server_command_pending(server, SILC_COMMAND_JOIN,
3112 silc_command_get_ident(cmd->payload),
3113 silc_server_command_destructor,
3114 silc_server_command_join,
3115 silc_server_command_dup(cmd));
3116 cmd->pending = TRUE;
3120 /* We are router and the channel does not seem exist so we will check
3121 our global list as well for the channel. */
3122 channel = silc_idlist_find_channel_by_name(server->global_list,
3123 channel_name, NULL);
3125 /* Channel really does not exist, create it */
3126 channel = silc_server_create_new_channel(server, server->id, cipher,
3127 hmac, channel_name, TRUE);
3129 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
3130 SILC_STATUS_ERR_UNKNOWN_ALGORITHM);
3134 umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
3141 /* Channel not found */
3143 /* If the command came from router and/or we are normal server then
3144 something went wrong with the joining as the channel was not found.
3145 We can't do anything else but ignore this. */
3146 if (cmd->sock->type == SILC_SOCKET_TYPE_ROUTER ||
3147 server->server_type == SILC_SERVER)
3150 /* We are router and the channel does not seem exist so we will check
3151 our global list as well for the channel. */
3152 channel = silc_idlist_find_channel_by_name(server->global_list,
3153 channel_name, NULL);
3155 /* Channel really does not exist, create it */
3156 channel = silc_server_create_new_channel(server, server->id, cipher,
3157 hmac, channel_name, TRUE);
3159 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
3160 SILC_STATUS_ERR_UNKNOWN_ALGORITHM);
3164 umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
3170 /* If the channel does not have global users and is also empty it means the
3171 channel was created globally (by our router) and the client will be the
3172 channel founder and operator. */
3173 if (!channel->global_users && !silc_hash_table_count(channel->user_list)) {
3174 umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
3175 created = TRUE; /* Created globally by our router */
3178 /* Join to the channel */
3179 silc_server_command_join_channel(server, cmd, channel, client_id,
3182 silc_free(client_id);
3185 silc_server_command_free(cmd);
3188 /* Server side of command MOTD. Sends server's current "message of the
3189 day" to the client. */
3191 SILC_SERVER_CMD_FUNC(motd)
3193 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
3194 SilcServer server = cmd->server;
3195 SilcBuffer packet, idp;
3196 char *motd, *dest_server;
3198 uint16 ident = silc_command_get_ident(cmd->payload);
3200 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_MOTD, cmd, 1, 1);
3202 /* Get server name */
3203 dest_server = silc_argument_get_arg_type(cmd->args, 1, NULL);
3205 silc_server_command_send_status_reply(cmd, SILC_COMMAND_MOTD,
3206 SILC_STATUS_ERR_NO_SUCH_SERVER);
3210 if (!strncasecmp(dest_server, server->server_name, strlen(dest_server))) {
3213 idp = silc_id_payload_encode(server->id_entry->id, SILC_ID_SERVER);
3215 if (server->config && server->config->motd &&
3216 server->config->motd->motd_file) {
3218 motd = silc_file_read(server->config->motd->motd_file, &motd_len);
3223 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_MOTD,
3224 SILC_STATUS_OK, ident, 2,
3230 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_MOTD,
3231 SILC_STATUS_OK, ident, 1,
3235 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
3236 packet->data, packet->len, FALSE);
3237 silc_buffer_free(packet);
3238 silc_buffer_free(idp);
3240 SilcServerEntry entry;
3242 /* Check whether we have this server cached */
3243 entry = silc_idlist_find_server_by_name(server->global_list,
3246 entry = silc_idlist_find_server_by_name(server->local_list,
3250 if (server->server_type == SILC_ROUTER && !cmd->pending &&
3251 entry && !entry->motd) {
3252 /* Send to the server */
3256 old_ident = silc_command_get_ident(cmd->payload);
3257 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
3258 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
3260 silc_server_packet_send(server, entry->connection,
3261 SILC_PACKET_COMMAND, cmd->packet->flags,
3262 tmpbuf->data, tmpbuf->len, TRUE);
3264 /* Reprocess this packet after received reply from router */
3265 silc_server_command_pending(server, SILC_COMMAND_MOTD,
3266 silc_command_get_ident(cmd->payload),
3267 silc_server_command_destructor,
3268 silc_server_command_motd,
3269 silc_server_command_dup(cmd));
3270 cmd->pending = TRUE;
3271 silc_command_set_ident(cmd->payload, old_ident);
3272 silc_buffer_free(tmpbuf);
3276 if (!entry && !cmd->pending && !server->standalone) {
3277 /* Send to the primary router */
3281 old_ident = silc_command_get_ident(cmd->payload);
3282 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
3283 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
3285 silc_server_packet_send(server, server->router->connection,
3286 SILC_PACKET_COMMAND, cmd->packet->flags,
3287 tmpbuf->data, tmpbuf->len, TRUE);
3289 /* Reprocess this packet after received reply from router */
3290 silc_server_command_pending(server, SILC_COMMAND_MOTD,
3291 silc_command_get_ident(cmd->payload),
3292 silc_server_command_destructor,
3293 silc_server_command_motd,
3294 silc_server_command_dup(cmd));
3295 cmd->pending = TRUE;
3296 silc_command_set_ident(cmd->payload, old_ident);
3297 silc_buffer_free(tmpbuf);
3302 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INFO,
3303 SILC_STATUS_ERR_NO_SUCH_SERVER);
3307 idp = silc_id_payload_encode(server->id_entry->id, SILC_ID_SERVER);
3310 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_MOTD,
3311 SILC_STATUS_OK, ident, 2,
3314 strlen(entry->motd));
3316 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_MOTD,
3317 SILC_STATUS_OK, ident, 1,
3320 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
3321 packet->data, packet->len, FALSE);
3322 silc_buffer_free(packet);
3323 silc_buffer_free(idp);
3327 silc_server_command_free(cmd);
3330 /* Server side of command UMODE. Client can use this command to set/unset
3331 user mode. Client actually cannot set itself to be as server/router
3332 operator so this can be used only to unset the modes. */
3334 SILC_SERVER_CMD_FUNC(umode)
3336 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
3337 SilcServer server = cmd->server;
3338 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
3340 unsigned char *tmp_mask;
3342 uint16 ident = silc_command_get_ident(cmd->payload);
3344 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
3347 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_UMODE, cmd, 2, 2);
3349 /* Get the client's mode mask */
3350 tmp_mask = silc_argument_get_arg_type(cmd->args, 2, NULL);
3352 silc_server_command_send_status_reply(cmd, SILC_COMMAND_UMODE,
3353 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3356 SILC_GET32_MSB(mask, tmp_mask);
3362 if (mask & SILC_UMODE_SERVER_OPERATOR) {
3363 if (!(client->mode & SILC_UMODE_SERVER_OPERATOR)) {
3364 /* Cannot operator mode */
3365 silc_server_command_send_status_reply(cmd, SILC_COMMAND_UMODE,
3366 SILC_STATUS_ERR_PERM_DENIED);
3370 if (client->mode & SILC_UMODE_SERVER_OPERATOR)
3371 /* Remove the server operator rights */
3372 client->mode &= ~SILC_UMODE_SERVER_OPERATOR;
3375 if (mask & SILC_UMODE_ROUTER_OPERATOR) {
3376 if (!(client->mode & SILC_UMODE_ROUTER_OPERATOR)) {
3377 /* Cannot operator mode */
3378 silc_server_command_send_status_reply(cmd, SILC_COMMAND_UMODE,
3379 SILC_STATUS_ERR_PERM_DENIED);
3383 if (client->mode & SILC_UMODE_ROUTER_OPERATOR)
3384 /* Remove the router operator rights */
3385 client->mode &= ~SILC_UMODE_ROUTER_OPERATOR;
3388 if (mask & SILC_UMODE_GONE) {
3389 client->mode |= SILC_UMODE_GONE;
3391 if (client->mode & SILC_UMODE_GONE)
3392 /* Remove the gone status */
3393 client->mode &= ~SILC_UMODE_GONE;
3396 /* Send UMODE change to primary router */
3397 if (!server->standalone)
3398 silc_server_send_notify_umode(server, server->router->connection, TRUE,
3399 client->id, client->mode);
3401 /* Send command reply to sender */
3402 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_UMODE,
3403 SILC_STATUS_OK, ident, 1,
3405 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
3406 packet->data, packet->len, FALSE);
3407 silc_buffer_free(packet);
3410 silc_server_command_free(cmd);
3413 /* Checks that client has rights to add or remove channel modes. If any
3414 of the checks fails FALSE is returned. */
3416 int silc_server_check_cmode_rights(SilcChannelEntry channel,
3417 SilcChannelClientEntry client,
3420 int is_op = client->mode & SILC_CHANNEL_UMODE_CHANOP;
3421 int is_fo = client->mode & SILC_CHANNEL_UMODE_CHANFO;
3423 /* Check whether has rights to change anything */
3424 if (!is_op && !is_fo)
3427 /* Check whether has rights to change everything */
3431 /* We know that client is channel operator, check that they are not
3432 changing anything that requires channel founder rights. Rest of the
3433 modes are available automatically for channel operator. */
3435 if (mode & SILC_CHANNEL_MODE_PRIVKEY) {
3436 if (is_op && !is_fo)
3439 if (channel->mode & SILC_CHANNEL_MODE_PRIVKEY) {
3440 if (is_op && !is_fo)
3445 if (mode & SILC_CHANNEL_MODE_PASSPHRASE) {
3446 if (is_op && !is_fo)
3449 if (channel->mode & SILC_CHANNEL_MODE_PASSPHRASE) {
3450 if (is_op && !is_fo)
3455 if (mode & SILC_CHANNEL_MODE_CIPHER) {
3456 if (is_op && !is_fo)
3459 if (channel->mode & SILC_CHANNEL_MODE_CIPHER) {
3460 if (is_op && !is_fo)
3465 if (mode & SILC_CHANNEL_MODE_FOUNDER_AUTH) {
3466 if (is_op && !is_fo)
3469 if (channel->mode & SILC_CHANNEL_MODE_FOUNDER_AUTH) {
3470 if (is_op && !is_fo)
3478 /* Server side command of CMODE. Changes channel mode */
3480 SILC_SERVER_CMD_FUNC(cmode)
3482 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
3483 SilcServer server = cmd->server;
3484 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
3485 SilcIDListData idata = (SilcIDListData)client;
3486 SilcChannelID *channel_id;
3487 SilcChannelEntry channel;
3488 SilcChannelClientEntry chl;
3489 SilcBuffer packet, cidp;
3490 unsigned char *tmp, *tmp_id, *tmp_mask;
3491 char *cipher = NULL, *hmac = NULL;
3492 uint32 mode_mask, tmp_len, tmp_len2;
3493 uint16 ident = silc_command_get_ident(cmd->payload);
3495 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_CMODE, cmd, 2, 7);
3497 /* Get Channel ID */
3498 tmp_id = silc_argument_get_arg_type(cmd->args, 1, &tmp_len2);
3500 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3501 SILC_STATUS_ERR_NO_CHANNEL_ID);
3504 channel_id = silc_id_payload_parse_id(tmp_id, tmp_len2);
3506 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3507 SILC_STATUS_ERR_NO_CHANNEL_ID);
3511 /* Get the channel mode mask */
3512 tmp_mask = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
3514 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3515 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3518 SILC_GET32_MSB(mode_mask, tmp_mask);
3520 /* Get channel entry */
3521 channel = silc_idlist_find_channel_by_id(server->local_list,
3524 channel = silc_idlist_find_channel_by_id(server->global_list,
3527 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3528 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
3533 /* Check whether this client is on the channel */
3534 if (!silc_server_client_on_channel(client, channel)) {
3535 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3536 SILC_STATUS_ERR_NOT_ON_CHANNEL);
3540 /* Get entry to the channel user list */
3541 silc_hash_table_find(channel->user_list, client, NULL, (void *)&chl);
3543 /* Check that client has rights to change any requested channel modes */
3544 if (!silc_server_check_cmode_rights(channel, chl, mode_mask)) {
3545 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3546 SILC_STATUS_ERR_NO_CHANNEL_PRIV);
3551 * Check the modes. Modes that requires nothing special operation are
3555 if (mode_mask & SILC_CHANNEL_MODE_PRIVKEY) {
3556 /* Channel uses private keys to protect traffic. Client(s) has set the
3557 key locally they want to use, server does not know that key. */
3558 /* Nothing interesting to do here */
3560 if (channel->mode & SILC_CHANNEL_MODE_PRIVKEY) {
3561 /* The mode is removed and we need to generate and distribute
3562 new channel key. Clients are not using private channel keys
3563 anymore after this. */
3565 /* Re-generate channel key */
3566 silc_server_create_channel_key(server, channel, 0);
3568 /* Send the channel key. This sends it to our local clients and if
3569 we are normal server to our router as well. */
3570 silc_server_send_channel_key(server, NULL, channel,
3571 server->server_type == SILC_ROUTER ?
3572 FALSE : !server->standalone);
3574 cipher = channel->channel_key->cipher->name;
3575 hmac = channel->hmac->hmac->name;
3579 if (mode_mask & SILC_CHANNEL_MODE_ULIMIT) {
3580 /* User limit is set on channel */
3583 /* Get user limit */
3584 tmp = silc_argument_get_arg_type(cmd->args, 3, NULL);
3586 if (!(channel->mode & SILC_CHANNEL_MODE_ULIMIT)) {
3587 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3588 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3592 SILC_GET32_MSB(user_limit, tmp);
3593 channel->user_limit = user_limit;
3596 if (channel->mode & SILC_CHANNEL_MODE_ULIMIT)
3597 /* User limit mode is unset. Remove user limit */
3598 channel->user_limit = 0;
3601 if (mode_mask & SILC_CHANNEL_MODE_PASSPHRASE) {
3602 if (!(channel->mode & SILC_CHANNEL_MODE_PASSPHRASE)) {
3603 /* Passphrase has been set to channel */
3605 /* Get the passphrase */
3606 tmp = silc_argument_get_arg_type(cmd->args, 4, NULL);
3608 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3609 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3613 /* Save the passphrase */
3614 channel->passphrase = strdup(tmp);
3617 if (channel->mode & SILC_CHANNEL_MODE_PASSPHRASE) {
3618 /* Passphrase mode is unset. remove the passphrase */
3619 if (channel->passphrase) {
3620 silc_free(channel->passphrase);
3621 channel->passphrase = NULL;
3626 if (mode_mask & SILC_CHANNEL_MODE_CIPHER) {
3627 if (!(channel->mode & SILC_CHANNEL_MODE_CIPHER)) {
3628 /* Cipher to use protect the traffic */
3631 cipher = silc_argument_get_arg_type(cmd->args, 5, NULL);
3633 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3634 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3638 /* Delete old cipher and allocate the new one */
3639 silc_cipher_free(channel->channel_key);
3640 if (!silc_cipher_alloc(cipher, &channel->channel_key)) {
3641 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3642 SILC_STATUS_ERR_UNKNOWN_ALGORITHM);
3646 /* Re-generate channel key */
3647 silc_server_create_channel_key(server, channel, 0);
3649 /* Send the channel key. This sends it to our local clients and if
3650 we are normal server to our router as well. */
3651 silc_server_send_channel_key(server, NULL, channel,
3652 server->server_type == SILC_ROUTER ?
3653 FALSE : !server->standalone);
3656 if (channel->mode & SILC_CHANNEL_MODE_CIPHER) {
3657 /* Cipher mode is unset. Remove the cipher and revert back to
3659 cipher = channel->cipher;
3661 /* Delete old cipher and allocate default one */
3662 silc_cipher_free(channel->channel_key);
3663 if (!silc_cipher_alloc(cipher ? cipher : "aes-256-cbc",
3664 &channel->channel_key)) {
3665 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3666 SILC_STATUS_ERR_UNKNOWN_ALGORITHM);
3670 /* Re-generate channel key */
3671 silc_server_create_channel_key(server, channel, 0);
3673 /* Send the channel key. This sends it to our local clients and if
3674 we are normal server to our router as well. */
3675 silc_server_send_channel_key(server, NULL, channel,
3676 server->server_type == SILC_ROUTER ?
3677 FALSE : !server->standalone);
3681 if (mode_mask & SILC_CHANNEL_MODE_HMAC) {
3682 if (!(channel->mode & SILC_CHANNEL_MODE_HMAC)) {
3683 /* HMAC to use protect the traffic */
3684 unsigned char hash[32];
3687 hmac = silc_argument_get_arg_type(cmd->args, 6, NULL);
3689 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3690 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3694 /* Delete old hmac and allocate the new one */
3695 silc_hmac_free(channel->hmac);
3696 if (!silc_hmac_alloc(hmac, NULL, &channel->hmac)) {
3697 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3698 SILC_STATUS_ERR_UNKNOWN_ALGORITHM);
3702 /* Set the HMAC key out of current channel key. The client must do
3704 silc_hash_make(channel->hmac->hash, channel->key, channel->key_len / 8,
3706 silc_hmac_set_key(channel->hmac, hash,
3707 silc_hash_len(channel->hmac->hash));
3708 memset(hash, 0, sizeof(hash));
3711 if (channel->mode & SILC_CHANNEL_MODE_HMAC) {
3712 /* Hmac mode is unset. Remove the hmac and revert back to
3714 unsigned char hash[32];
3715 hmac = channel->hmac_name;
3717 /* Delete old hmac and allocate default one */
3718 silc_hmac_free(channel->hmac);
3719 if (!silc_hmac_alloc(hmac ? hmac : "hmac-sha1-96", NULL,
3721 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3722 SILC_STATUS_ERR_UNKNOWN_ALGORITHM);
3726 /* Set the HMAC key out of current channel key. The client must do
3728 silc_hash_make(channel->hmac->hash, channel->key, channel->key_len / 8,
3730 silc_hmac_set_key(channel->hmac, hash,
3731 silc_hash_len(channel->hmac->hash));
3732 memset(hash, 0, sizeof(hash));
3736 if (mode_mask & SILC_CHANNEL_MODE_FOUNDER_AUTH) {
3737 if (chl->mode & SILC_CHANNEL_UMODE_CHANFO) {
3738 if (!(channel->mode & SILC_CHANNEL_MODE_FOUNDER_AUTH)) {
3739 /* Set the founder authentication */
3740 SilcAuthPayload auth;
3742 tmp = silc_argument_get_arg_type(cmd->args, 7, &tmp_len);
3744 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3745 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3749 auth = silc_auth_payload_parse(tmp, tmp_len);
3751 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3752 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3756 /* Save the public key */
3757 tmp = silc_pkcs_public_key_encode(idata->public_key, &tmp_len);
3758 silc_pkcs_public_key_decode(tmp, tmp_len, &channel->founder_key);
3761 channel->founder_method = silc_auth_get_method(auth);
3763 if (channel->founder_method == SILC_AUTH_PASSWORD) {
3764 tmp = silc_auth_get_data(auth, &tmp_len);
3765 channel->founder_passwd =
3766 silc_calloc(tmp_len + 1, sizeof(*channel->founder_passwd));
3767 memcpy(channel->founder_passwd, tmp, tmp_len);
3768 channel->founder_passwd_len = tmp_len;
3770 /* Verify the payload before setting the mode */
3771 if (!silc_auth_verify(auth, channel->founder_method,
3772 channel->founder_key, 0, idata->hash,
3773 client->id, SILC_ID_CLIENT)) {
3774 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3775 SILC_STATUS_ERR_AUTH_FAILED);
3780 silc_auth_payload_free(auth);
3784 if (chl->mode & SILC_CHANNEL_UMODE_CHANFO) {
3785 if (channel->mode & SILC_CHANNEL_MODE_FOUNDER_AUTH) {
3786 if (channel->founder_key)
3787 silc_pkcs_public_key_free(channel->founder_key);
3788 if (channel->founder_passwd) {
3789 silc_free(channel->founder_passwd);
3790 channel->founder_passwd = NULL;
3796 /* Finally, set the mode */
3797 channel->mode = mode_mask;
3799 /* Send CMODE_CHANGE notify */
3800 cidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
3801 silc_server_send_notify_to_channel(server, NULL, channel, FALSE,
3802 SILC_NOTIFY_TYPE_CMODE_CHANGE, 4,
3803 cidp->data, cidp->len,
3805 cipher, cipher ? strlen(cipher) : 0,
3806 hmac, hmac ? strlen(hmac) : 0);
3808 /* Set CMODE notify type to network */
3809 if (!server->standalone)
3810 silc_server_send_notify_cmode(server, server->router->connection,
3811 server->server_type == SILC_ROUTER ?
3812 TRUE : FALSE, channel,
3813 mode_mask, client->id, SILC_ID_CLIENT,
3816 /* Send command reply to sender */
3817 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_CMODE,
3818 SILC_STATUS_OK, ident, 2,
3819 2, tmp_id, tmp_len2,
3821 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
3822 packet->data, packet->len, FALSE);
3824 silc_buffer_free(packet);
3825 silc_free(channel_id);
3829 silc_server_command_free(cmd);
3832 /* Server side of CUMODE command. Changes client's mode on a channel. */
3834 SILC_SERVER_CMD_FUNC(cumode)
3836 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
3837 SilcServer server = cmd->server;
3838 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
3839 SilcIDListData idata = (SilcIDListData)client;
3840 SilcChannelID *channel_id;
3841 SilcClientID *client_id;
3842 SilcChannelEntry channel;
3843 SilcClientEntry target_client;
3844 SilcChannelClientEntry chl;
3845 SilcBuffer packet, idp;
3846 unsigned char *tmp_id, *tmp_ch_id, *tmp_mask;
3847 uint32 target_mask, sender_mask = 0, tmp_len, tmp_ch_len;
3849 uint16 ident = silc_command_get_ident(cmd->payload);
3851 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_CUMODE, cmd, 3, 4);
3853 /* Get Channel ID */
3854 tmp_ch_id = silc_argument_get_arg_type(cmd->args, 1, &tmp_ch_len);
3856 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3857 SILC_STATUS_ERR_NO_CHANNEL_ID);
3860 channel_id = silc_id_payload_parse_id(tmp_ch_id, tmp_ch_len);
3862 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3863 SILC_STATUS_ERR_NO_CHANNEL_ID);
3867 /* Get channel entry */
3868 channel = silc_idlist_find_channel_by_id(server->local_list,
3871 channel = silc_idlist_find_channel_by_id(server->global_list,
3874 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3875 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
3880 /* Check whether sender is on the channel */
3881 if (!silc_server_client_on_channel(client, channel)) {
3882 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3883 SILC_STATUS_ERR_NOT_ON_CHANNEL);
3887 /* Check that client has rights to change other's rights */
3888 silc_hash_table_find(channel->user_list, client, NULL, (void *)&chl);
3889 sender_mask = chl->mode;
3891 /* Get the target client's channel mode mask */
3892 tmp_mask = silc_argument_get_arg_type(cmd->args, 2, NULL);
3894 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3895 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3898 SILC_GET32_MSB(target_mask, tmp_mask);
3900 /* Get target Client ID */
3901 tmp_id = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
3903 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3904 SILC_STATUS_ERR_NO_CLIENT_ID);
3907 client_id = silc_id_payload_parse_id(tmp_id, tmp_len);
3909 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3910 SILC_STATUS_ERR_NO_CLIENT_ID);
3914 /* Get target client's entry */
3915 target_client = silc_idlist_find_client_by_id(server->local_list,
3917 if (!target_client) {
3918 target_client = silc_idlist_find_client_by_id(server->global_list,
3922 if (target_client != client &&
3923 !(sender_mask & SILC_CHANNEL_UMODE_CHANFO) &&
3924 !(sender_mask & SILC_CHANNEL_UMODE_CHANOP)) {
3925 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3926 SILC_STATUS_ERR_NO_CHANNEL_PRIV);
3930 /* Check whether target client is on the channel */
3931 if (target_client != client) {
3932 if (!silc_server_client_on_channel(target_client, channel)) {
3933 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3934 SILC_STATUS_ERR_USER_NOT_ON_CHANNEL);
3938 /* Get entry to the channel user list */
3939 silc_hash_table_find(channel->user_list, target_client, NULL,
3947 /* If the target client is founder, no one else can change their mode
3949 if (chl->mode & SILC_CHANNEL_UMODE_CHANFO && chl->client != target_client) {
3950 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3951 SILC_STATUS_ERR_NOT_YOU);
3955 if (target_mask & SILC_CHANNEL_UMODE_CHANFO) {
3956 /* The client tries to claim the founder rights. */
3957 unsigned char *tmp_auth;
3958 uint32 tmp_auth_len, auth_len;
3961 if (target_client != client) {
3962 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3963 SILC_STATUS_ERR_NOT_YOU);
3967 if (!(channel->mode & SILC_CHANNEL_MODE_FOUNDER_AUTH) ||
3968 !channel->founder_key) {
3969 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3970 SILC_STATUS_ERR_NOT_YOU);
3974 tmp_auth = silc_argument_get_arg_type(cmd->args, 4, &tmp_auth_len);
3976 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3977 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3981 auth = (channel->founder_method == SILC_AUTH_PASSWORD ?
3982 (void *)channel->founder_passwd : (void *)channel->founder_key);
3983 auth_len = (channel->founder_method == SILC_AUTH_PASSWORD ?
3984 channel->founder_passwd_len : 0);
3986 if (!silc_auth_verify_data(tmp_auth, tmp_auth_len,
3987 channel->founder_method, auth, auth_len,
3988 idata->hash, client->id, SILC_ID_CLIENT)) {
3989 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3990 SILC_STATUS_ERR_AUTH_FAILED);
3994 sender_mask = chl->mode |= SILC_CHANNEL_UMODE_CHANFO;
3997 if (chl->mode & SILC_CHANNEL_UMODE_CHANFO) {
3998 if (target_client == client) {
3999 /* Remove channel founder rights from itself */
4000 chl->mode &= ~SILC_CHANNEL_UMODE_CHANFO;
4003 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
4004 SILC_STATUS_ERR_NOT_YOU);
4010 if (target_mask & SILC_CHANNEL_UMODE_CHANOP) {
4011 /* Promote to operator */
4012 if (!(chl->mode & SILC_CHANNEL_UMODE_CHANOP)) {
4013 if (!(sender_mask & SILC_CHANNEL_UMODE_CHANOP) &&
4014 !(sender_mask & SILC_CHANNEL_UMODE_CHANFO)) {
4015 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
4016 SILC_STATUS_ERR_NO_CHANNEL_PRIV);
4020 chl->mode |= SILC_CHANNEL_UMODE_CHANOP;
4024 if (chl->mode & SILC_CHANNEL_UMODE_CHANOP) {
4025 if (!(sender_mask & SILC_CHANNEL_UMODE_CHANOP) &&
4026 !(sender_mask & SILC_CHANNEL_UMODE_CHANFO)) {
4027 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
4028 SILC_STATUS_ERR_NO_CHANNEL_PRIV);
4032 /* Demote to normal user */
4033 chl->mode &= ~SILC_CHANNEL_UMODE_CHANOP;
4038 idp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
4039 tmp_id = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
4041 /* Send notify to channel, notify only if mode was actually changed. */
4043 silc_server_send_notify_to_channel(server, NULL, channel, FALSE,
4044 SILC_NOTIFY_TYPE_CUMODE_CHANGE, 3,
4045 idp->data, idp->len,
4049 /* Set CUMODE notify type to network */
4050 if (!server->standalone)
4051 silc_server_send_notify_cumode(server, server->router->connection,
4052 server->server_type == SILC_ROUTER ?
4053 TRUE : FALSE, channel,
4054 target_mask, client->id,
4059 /* Send command reply to sender */
4060 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_CUMODE,
4061 SILC_STATUS_OK, ident, 3,
4063 3, tmp_ch_id, tmp_ch_len,
4064 4, tmp_id, tmp_len);
4065 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
4066 packet->data, packet->len, FALSE);
4068 silc_buffer_free(packet);
4069 silc_free(channel_id);
4070 silc_free(client_id);
4071 silc_buffer_free(idp);
4074 silc_server_command_free(cmd);
4077 /* Server side of KICK command. Kicks client out of channel. */
4079 SILC_SERVER_CMD_FUNC(kick)
4081 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4082 SilcServer server = cmd->server;
4083 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
4084 SilcClientEntry target_client;
4085 SilcChannelID *channel_id;
4086 SilcClientID *client_id;
4087 SilcChannelEntry channel;
4088 SilcChannelClientEntry chl;
4091 unsigned char *tmp, *comment;
4093 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_LEAVE, cmd, 1, 3);
4095 /* Get Channel ID */
4096 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
4098 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4099 SILC_STATUS_ERR_NO_CHANNEL_ID);
4102 channel_id = silc_id_payload_parse_id(tmp, tmp_len);
4104 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4105 SILC_STATUS_ERR_NO_CHANNEL_ID);
4109 /* Get channel entry */
4110 channel = silc_idlist_find_channel_by_id(server->local_list,
4113 channel = silc_idlist_find_channel_by_id(server->local_list,
4116 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4117 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
4122 /* Check whether sender is on the channel */
4123 if (!silc_server_client_on_channel(client, channel)) {
4124 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4125 SILC_STATUS_ERR_NOT_ON_CHANNEL);
4129 /* Check that the kicker is channel operator or channel founder */
4130 silc_hash_table_find(channel->user_list, client, NULL, (void *)&chl);
4131 if (chl->mode == SILC_CHANNEL_UMODE_NONE) {
4132 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4133 SILC_STATUS_ERR_NO_CHANNEL_PRIV);
4137 /* Get target Client ID */
4138 tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
4140 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4141 SILC_STATUS_ERR_NO_CLIENT_ID);
4144 client_id = silc_id_payload_parse_id(tmp, tmp_len);
4146 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4147 SILC_STATUS_ERR_NO_CLIENT_ID);
4151 /* Get target client's entry */
4152 target_client = silc_idlist_find_client_by_id(server->local_list,
4154 if (!target_client) {
4155 target_client = silc_idlist_find_client_by_id(server->global_list,
4159 /* Check that the target client is not channel founder. Channel founder
4160 cannot be kicked from the channel. */
4161 silc_hash_table_find(channel->user_list, target_client, NULL, (void *)&chl);
4162 if (chl->mode & SILC_CHANNEL_UMODE_CHANFO) {
4163 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4164 SILC_STATUS_ERR_NO_CHANNEL_FOPRIV);
4168 /* Check whether target client is on the channel */
4169 if (!silc_server_client_on_channel(target_client, channel)) {
4170 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4171 SILC_STATUS_ERR_USER_NOT_ON_CHANNEL);
4177 comment = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
4181 /* Send command reply to sender */
4182 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4185 /* Send KICKED notify to local clients on the channel */
4186 idp = silc_id_payload_encode(target_client->id, SILC_ID_CLIENT);
4187 silc_server_send_notify_to_channel(server, NULL, channel, FALSE,
4188 SILC_NOTIFY_TYPE_KICKED,
4190 idp->data, idp->len,
4191 comment, comment ? strlen(comment) : 0);
4192 silc_buffer_free(idp);
4194 /* Remove the client from the channel. If the channel does not exist
4195 after removing the client then the client kicked itself off the channel
4196 and we don't have to send anything after that. */
4197 if (!silc_server_remove_from_one_channel(server, NULL, channel,
4198 target_client, FALSE))
4201 /* Send KICKED notify to primary route */
4202 if (!server->standalone)
4203 silc_server_send_notify_kicked(server, server->router->connection,
4204 server->server_type == SILC_ROUTER ?
4205 TRUE : FALSE, channel,
4206 target_client->id, comment);
4208 if (!(channel->mode & SILC_CHANNEL_MODE_PRIVKEY)) {
4209 /* Re-generate channel key */
4210 silc_server_create_channel_key(server, channel, 0);
4212 /* Send the channel key to the channel. The key of course is not sent
4213 to the client who was kicked off the channel. */
4214 silc_server_send_channel_key(server, target_client->connection, channel,
4215 server->server_type == SILC_ROUTER ?
4216 FALSE : !server->standalone);
4220 silc_server_command_free(cmd);
4223 /* Server side of OPER command. Client uses this comand to obtain server
4224 operator privileges to this server/router. */
4226 SILC_SERVER_CMD_FUNC(oper)
4228 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4229 SilcServer server = cmd->server;
4230 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
4231 unsigned char *username, *auth;
4233 SilcServerConfigSectionAdminConnection *admin;
4234 SilcIDListData idata = (SilcIDListData)client;
4236 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_OPER, cmd, 1, 2);
4238 if (!client || cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
4241 /* Get the username */
4242 username = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
4244 silc_server_command_send_status_reply(cmd, SILC_COMMAND_OPER,
4245 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
4249 /* Get the admin configuration */
4250 admin = silc_server_config_find_admin(server->config, cmd->sock->ip,
4251 username, client->nickname);
4253 admin = silc_server_config_find_admin(server->config, cmd->sock->hostname,
4254 username, client->nickname);
4256 silc_server_command_send_status_reply(cmd, SILC_COMMAND_OPER,
4257 SILC_STATUS_ERR_AUTH_FAILED);
4262 /* Get the authentication payload */
4263 auth = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
4265 silc_server_command_send_status_reply(cmd, SILC_COMMAND_OPER,
4266 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
4270 /* Verify the authentication data */
4271 if (!silc_auth_verify_data(auth, tmp_len, admin->auth_meth,
4272 admin->auth_data, admin->auth_data_len,
4273 idata->hash, client->id, SILC_ID_CLIENT)) {
4274 silc_server_command_send_status_reply(cmd, SILC_COMMAND_OPER,
4275 SILC_STATUS_ERR_AUTH_FAILED);
4279 /* Client is now server operator */
4280 client->mode |= SILC_UMODE_SERVER_OPERATOR;
4282 /* Send UMODE change to primary router */
4283 if (!server->standalone)
4284 silc_server_send_notify_umode(server, server->router->connection, TRUE,
4285 client->id, client->mode);
4287 /* Send reply to the sender */
4288 silc_server_command_send_status_reply(cmd, SILC_COMMAND_OPER,
4292 silc_server_command_free(cmd);
4295 /* Server side of SILCOPER command. Client uses this comand to obtain router
4296 operator privileges to this router. */
4298 SILC_SERVER_CMD_FUNC(silcoper)
4300 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4301 SilcServer server = cmd->server;
4302 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
4303 unsigned char *username, *auth;
4305 SilcServerConfigSectionAdminConnection *admin;
4306 SilcIDListData idata = (SilcIDListData)client;
4308 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_SILCOPER, cmd, 1, 2);
4310 if (!client || cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
4313 if (server->server_type == SILC_SERVER) {
4314 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
4315 SILC_STATUS_ERR_AUTH_FAILED);
4319 /* Get the username */
4320 username = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
4322 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
4323 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
4327 /* Get the admin configuration */
4328 admin = silc_server_config_find_admin(server->config, cmd->sock->ip,
4329 username, client->nickname);
4331 admin = silc_server_config_find_admin(server->config, cmd->sock->hostname,
4332 username, client->nickname);
4334 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
4335 SILC_STATUS_ERR_AUTH_FAILED);
4340 /* Get the authentication payload */
4341 auth = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
4343 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
4344 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
4348 /* Verify the authentication data */
4349 if (!silc_auth_verify_data(auth, tmp_len, admin->auth_meth,
4350 admin->auth_data, admin->auth_data_len,
4351 idata->hash, client->id, SILC_ID_CLIENT)) {
4352 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
4353 SILC_STATUS_ERR_AUTH_FAILED);
4357 /* Client is now router operator */
4358 client->mode |= SILC_UMODE_ROUTER_OPERATOR;
4360 /* Send UMODE change to primary router */
4361 if (!server->standalone)
4362 silc_server_send_notify_umode(server, server->router->connection, TRUE,
4363 client->id, client->mode);
4365 /* Send reply to the sender */
4366 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
4370 silc_server_command_free(cmd);
4373 /* Server side command of CONNECT. Connects us to the specified remote
4374 server or router. */
4376 SILC_SERVER_CMD_FUNC(connect)
4378 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4379 SilcServer server = cmd->server;
4380 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
4381 unsigned char *tmp, *host;
4383 uint32 port = SILC_PORT;
4385 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_CONNECT, cmd, 1, 2);
4387 if (!client || cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
4390 /* Check whether client has the permissions. */
4391 if (client->mode == SILC_UMODE_NONE) {
4392 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CONNECT,
4393 SILC_STATUS_ERR_NO_SERVER_PRIV);
4397 if (server->server_type == SILC_ROUTER &&
4398 client->mode & SILC_UMODE_SERVER_OPERATOR) {
4399 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CONNECT,
4400 SILC_STATUS_ERR_NO_ROUTER_PRIV);
4404 /* Get the remote server */
4405 host = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
4407 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CONNECT,
4408 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
4413 tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
4415 SILC_GET32_MSB(port, tmp);
4417 /* Create the connection. It is done with timeout and is async. */
4418 silc_server_create_connection(server, host, port);
4420 /* Send reply to the sender */
4421 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CONNECT,
4425 silc_server_command_free(cmd);
4428 /* Server side of command BAN. This is used to manage the ban list of the
4429 channel. To add clients and remove clients from the ban list. */
4431 SILC_SERVER_CMD_FUNC(ban)
4433 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4434 SilcServer server = cmd->server;
4435 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
4437 SilcChannelEntry channel;
4438 SilcChannelClientEntry chl;
4439 SilcChannelID *channel_id = NULL;
4440 unsigned char *id, *add, *del;
4441 uint32 id_len, tmp_len;
4442 uint16 ident = silc_command_get_ident(cmd->payload);
4444 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
4447 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_BAN, cmd, 0, 3);
4449 /* Get Channel ID */
4450 id = silc_argument_get_arg_type(cmd->args, 1, &id_len);
4452 channel_id = silc_id_payload_parse_id(id, id_len);
4454 silc_server_command_send_status_reply(cmd, SILC_COMMAND_BAN,
4455 SILC_STATUS_ERR_NO_CHANNEL_ID);
4460 /* Get channel entry. The server must know about the channel since the
4461 client is expected to be on the channel. */
4462 channel = silc_idlist_find_channel_by_id(server->local_list,
4465 channel = silc_idlist_find_channel_by_id(server->global_list,
4468 silc_server_command_send_status_reply(cmd, SILC_COMMAND_BAN,
4469 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
4474 /* Check whether this client is on the channel */
4475 if (!silc_server_client_on_channel(client, channel)) {
4476 silc_server_command_send_status_reply(cmd, SILC_COMMAND_BAN,
4477 SILC_STATUS_ERR_NOT_ON_CHANNEL);
4481 /* Get entry to the channel user list */
4482 silc_hash_table_find(channel->user_list, client, NULL, (void *)&chl);
4484 /* The client must be at least channel operator. */
4485 if (!(chl->mode & SILC_CHANNEL_UMODE_CHANOP)) {
4486 silc_server_command_send_status_reply(cmd, SILC_COMMAND_BAN,
4487 SILC_STATUS_ERR_NO_CHANNEL_PRIV);
4491 /* Get the new ban and add it to the ban list */
4492 add = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
4494 if (!channel->ban_list)
4495 channel->ban_list = silc_calloc(tmp_len + 2, sizeof(*channel->ban_list));
4497 channel->ban_list = silc_realloc(channel->ban_list,
4498 sizeof(*channel->ban_list) *
4500 strlen(channel->ban_list) + 2));
4501 if (add[tmp_len - 1] == ',')
4502 add[tmp_len - 1] = '\0';
4504 strncat(channel->ban_list, add, tmp_len);
4505 strncat(channel->ban_list, ",", 1);
4508 /* Get the ban to be removed and remove it from the list */
4509 del = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
4510 if (del && channel->ban_list) {
4511 char *start, *end, *n;
4513 if (!strncmp(channel->ban_list, del, strlen(channel->ban_list) - 1)) {
4514 silc_free(channel->ban_list);
4515 channel->ban_list = NULL;
4517 start = strstr(channel->ban_list, del);
4518 if (start && strlen(start) >= tmp_len) {
4519 end = start + tmp_len;
4520 n = silc_calloc(strlen(channel->ban_list) - tmp_len, sizeof(*n));
4521 strncat(n, channel->ban_list, start - channel->ban_list);
4522 strncat(n, end + 1, ((channel->ban_list + strlen(channel->ban_list)) -
4524 silc_free(channel->ban_list);
4525 channel->ban_list = n;
4530 /* Send the BAN notify type to our primary router. */
4531 if (!server->standalone && (add || del))
4532 silc_server_send_notify_ban(server, server->router->connection,
4533 server->server_type == SILC_ROUTER ?
4534 TRUE : FALSE, channel, add, del);
4536 /* Send the reply back to the client */
4537 if (channel->ban_list)
4539 silc_command_reply_payload_encode_va(SILC_COMMAND_BAN,
4540 SILC_STATUS_OK, ident, 2,
4542 3, channel->ban_list,
4543 strlen(channel->ban_list) - 1);
4546 silc_command_reply_payload_encode_va(SILC_COMMAND_BAN,
4547 SILC_STATUS_OK, ident, 1,
4550 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
4551 packet->data, packet->len, FALSE);
4553 silc_buffer_free(packet);
4557 silc_free(channel_id);
4558 silc_server_command_free(cmd);
4561 /* Server side command of CLOSE. Closes connection to a specified server. */
4563 SILC_SERVER_CMD_FUNC(close)
4565 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4566 SilcServer server = cmd->server;
4567 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
4568 SilcServerEntry server_entry;
4569 SilcSocketConnection sock;
4572 unsigned char *name;
4573 uint32 port = SILC_PORT;
4575 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_CLOSE, cmd, 1, 2);
4577 if (!client || cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
4580 /* Check whether client has the permissions. */
4581 if (client->mode == SILC_UMODE_NONE) {
4582 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CLOSE,
4583 SILC_STATUS_ERR_NO_SERVER_PRIV);
4587 /* Get the remote server */
4588 name = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
4590 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CLOSE,
4591 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
4596 tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
4598 SILC_GET32_MSB(port, tmp);
4600 server_entry = silc_idlist_find_server_by_conn(server->local_list,
4602 if (!server_entry) {
4603 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CLOSE,
4604 SILC_STATUS_ERR_NO_SERVER_ID);
4608 /* Send reply to the sender */
4609 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CLOSE,
4612 /* Close the connection to the server */
4613 sock = (SilcSocketConnection)server_entry->connection;
4614 silc_server_free_sock_user_data(server, sock);
4615 silc_server_close_connection(server, sock);
4618 silc_server_command_free(cmd);
4621 /* Server side command of SHUTDOWN. Shutdowns the server and closes all
4622 active connections. */
4624 SILC_SERVER_CMD_FUNC(shutdown)
4626 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4627 SilcServer server = cmd->server;
4628 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
4630 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_SHUTDOWN, cmd, 0, 0);
4632 if (!client || cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
4635 /* Check whether client has the permission. */
4636 if (client->mode == SILC_UMODE_NONE) {
4637 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SHUTDOWN,
4638 SILC_STATUS_ERR_NO_SERVER_PRIV);
4642 /* Send reply to the sender */
4643 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SHUTDOWN,
4646 /* Then, gracefully, or not, bring the server down. */
4647 silc_server_stop(server);
4651 silc_server_command_free(cmd);
4654 /* Server side command of LEAVE. Removes client from a channel. */
4656 SILC_SERVER_CMD_FUNC(leave)
4658 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4659 SilcServer server = cmd->server;
4660 SilcSocketConnection sock = cmd->sock;
4661 SilcClientEntry id_entry = (SilcClientEntry)cmd->sock->user_data;
4662 SilcChannelID *id = NULL;
4663 SilcChannelEntry channel;
4667 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_LEAVE, cmd, 1, 2);
4669 /* Get Channel ID */
4670 tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
4672 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
4673 SILC_STATUS_ERR_NO_CHANNEL_ID);
4676 id = silc_id_payload_parse_id(tmp, len);
4678 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
4679 SILC_STATUS_ERR_NO_CHANNEL_ID);
4683 /* Get channel entry */
4684 channel = silc_idlist_find_channel_by_id(server->local_list, id, NULL);
4686 channel = silc_idlist_find_channel_by_id(server->global_list, id, NULL);
4688 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
4689 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
4694 /* Check whether this client is on the channel */
4695 if (!silc_server_client_on_channel(id_entry, channel)) {
4696 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
4697 SILC_STATUS_ERR_NOT_ON_CHANNEL);
4701 /* Notify routers that they should remove this client from their list
4702 of clients on the channel. Send LEAVE notify type. */
4703 if (!server->standalone)
4704 silc_server_send_notify_leave(server, server->router->connection,
4705 server->server_type == SILC_ROUTER ?
4706 TRUE : FALSE, channel, id_entry->id);
4708 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
4711 /* Remove client from channel */
4712 if (!silc_server_remove_from_one_channel(server, sock, channel, id_entry,
4714 /* If the channel does not exist anymore we won't send anything */
4717 if (!(channel->mode & SILC_CHANNEL_MODE_PRIVKEY)) {
4718 /* Re-generate channel key */
4719 silc_server_create_channel_key(server, channel, 0);
4721 /* Send the channel key */
4722 silc_server_send_channel_key(server, NULL, channel,
4723 server->server_type == SILC_ROUTER ?
4724 FALSE : !server->standalone);
4730 silc_server_command_free(cmd);
4733 /* Server side of command USERS. Resolves clients and their USERS currently
4734 joined on the requested channel. The list of Client ID's and their modes
4735 on the channel is sent back. */
4737 SILC_SERVER_CMD_FUNC(users)
4739 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4740 SilcServer server = cmd->server;
4741 SilcChannelEntry channel;
4742 SilcChannelID *id = NULL;
4743 SilcBuffer packet, idp;
4744 unsigned char *channel_id;
4745 uint32 channel_id_len;
4746 SilcBuffer client_id_list;
4747 SilcBuffer client_mode_list;
4748 unsigned char lc[4];
4749 uint32 list_count = 0;
4750 uint16 ident = silc_command_get_ident(cmd->payload);
4753 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_USERS, cmd, 1, 2);
4755 /* Get Channel ID */
4756 channel_id = silc_argument_get_arg_type(cmd->args, 1, &channel_id_len);
4758 /* Get channel name */
4759 channel_name = silc_argument_get_arg_type(cmd->args, 2, NULL);
4761 if (!channel_id && !channel_name) {
4762 silc_server_command_send_status_reply(cmd, SILC_COMMAND_USERS,
4763 SILC_STATUS_ERR_NO_CHANNEL_ID);
4768 id = silc_id_payload_parse_id(channel_id, channel_id_len);
4770 silc_server_command_send_status_reply(cmd, SILC_COMMAND_USERS,
4771 SILC_STATUS_ERR_NO_CHANNEL_ID);
4776 /* If we are server and we don't know about this channel we will send
4777 the command to our router. If we know about the channel then we also
4778 have the list of users already. */
4780 channel = silc_idlist_find_channel_by_id(server->local_list, id, NULL);
4782 channel = silc_idlist_find_channel_by_name(server->local_list,
4783 channel_name, NULL);
4786 if (server->server_type == SILC_SERVER && !server->standalone &&
4790 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
4791 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
4793 /* Send USERS command */
4794 silc_server_packet_send(server, server->router->connection,
4795 SILC_PACKET_COMMAND, cmd->packet->flags,
4796 tmpbuf->data, tmpbuf->len, TRUE);
4798 /* Reprocess this packet after received reply */
4799 silc_server_command_pending(server, SILC_COMMAND_USERS,
4800 silc_command_get_ident(cmd->payload),
4801 silc_server_command_destructor,
4802 silc_server_command_users,
4803 silc_server_command_dup(cmd));
4804 cmd->pending = TRUE;
4805 silc_command_set_ident(cmd->payload, ident);
4807 silc_buffer_free(tmpbuf);
4812 /* Check the global list as well. */
4814 channel = silc_idlist_find_channel_by_id(server->global_list, id, NULL);
4816 channel = silc_idlist_find_channel_by_name(server->global_list,
4817 channel_name, NULL);
4819 /* Channel really does not exist */
4820 silc_server_command_send_status_reply(cmd, SILC_COMMAND_USERS,
4821 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
4826 /* If the channel is private or secret do not send anything */
4827 if (channel->mode & (SILC_CHANNEL_MODE_PRIVATE | SILC_CHANNEL_MODE_SECRET)) {
4828 silc_server_command_send_status_reply(cmd, SILC_COMMAND_USERS,
4829 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
4833 /* Get the users list */
4834 silc_server_get_users_on_channel(server, channel, &client_id_list,
4835 &client_mode_list, &list_count);
4838 SILC_PUT32_MSB(list_count, lc);
4841 idp = silc_id_payload_encode(channel->id, SILC_ID_CHANNEL);
4842 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_USERS,
4843 SILC_STATUS_OK, ident, 4,
4844 2, idp->data, idp->len,
4846 4, client_id_list->data,
4847 client_id_list->len,
4848 5, client_mode_list->data,
4849 client_mode_list->len);
4850 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
4851 packet->data, packet->len, FALSE);
4853 silc_buffer_free(idp);
4854 silc_buffer_free(packet);
4855 silc_buffer_free(client_id_list);
4856 silc_buffer_free(client_mode_list);
4861 silc_server_command_free(cmd);
4864 /* Server side of command GETKEY. This fetches the client's public key
4865 from the server where to the client is connected. */
4867 SILC_SERVER_CMD_FUNC(getkey)
4869 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4870 SilcServer server = cmd->server;
4872 SilcClientEntry client;
4873 SilcServerEntry server_entry;
4874 SilcClientID *client_id = NULL;
4875 SilcServerID *server_id = NULL;
4876 SilcIDPayload idp = NULL;
4877 uint16 ident = silc_command_get_ident(cmd->payload);
4883 SILC_LOG_DEBUG(("Start"));
4885 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
4887 silc_server_command_send_status_reply(cmd, SILC_COMMAND_GETKEY,
4888 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
4891 idp = silc_id_payload_parse_data(tmp, tmp_len);
4893 silc_server_command_send_status_reply(cmd, SILC_COMMAND_GETKEY,
4894 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
4898 id_type = silc_id_payload_get_type(idp);
4899 if (id_type == SILC_ID_CLIENT) {
4900 client_id = silc_id_payload_get_id(idp);
4902 /* If the client is not found from local list there is no chance it
4903 would be locally connected client so send the command further. */
4904 client = silc_idlist_find_client_by_id(server->local_list,
4907 client = silc_idlist_find_client_by_id(server->global_list,
4910 if ((!client && !cmd->pending && !server->standalone) ||
4911 (client && !client->connection && !cmd->pending &&
4912 !server->standalone) ||
4913 (client && !client->data.public_key && !cmd->pending &&
4914 !server->standalone)) {
4917 SilcSocketConnection dest_sock;
4919 dest_sock = silc_server_get_client_route(server, NULL, 0,
4924 old_ident = silc_command_get_ident(cmd->payload);
4925 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
4926 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
4928 silc_server_packet_send(server, dest_sock,
4929 SILC_PACKET_COMMAND, cmd->packet->flags,
4930 tmpbuf->data, tmpbuf->len, TRUE);
4932 /* Reprocess this packet after received reply from router */
4933 silc_server_command_pending(server, SILC_COMMAND_GETKEY,
4934 silc_command_get_ident(cmd->payload),
4935 silc_server_command_destructor,
4936 silc_server_command_getkey,
4937 silc_server_command_dup(cmd));
4938 cmd->pending = TRUE;
4940 silc_command_set_ident(cmd->payload, old_ident);
4941 silc_buffer_free(tmpbuf);
4945 if (!client && cmd->pending) {
4946 silc_server_command_send_status_reply(cmd, SILC_COMMAND_GETKEY,
4947 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID);
4951 /* The client is locally connected, just get the public key and
4953 tmp = silc_pkcs_public_key_encode(client->data.public_key, &tmp_len);
4954 pk = silc_buffer_alloc(4 + tmp_len);
4955 silc_buffer_pull_tail(pk, SILC_BUFFER_END(pk));
4956 silc_buffer_format(pk,
4957 SILC_STR_UI_SHORT(tmp_len),
4958 SILC_STR_UI_SHORT(SILC_SKE_PK_TYPE_SILC),
4959 SILC_STR_UI_XNSTRING(tmp, tmp_len),
4963 } else if (id_type == SILC_ID_SERVER) {
4964 server_id = silc_id_payload_get_id(idp);
4966 /* If the server is not found from local list there is no chance it
4967 would be locally connected server so send the command further. */
4968 server_entry = silc_idlist_find_server_by_id(server->local_list,
4971 server_entry = silc_idlist_find_server_by_id(server->global_list,
4974 if ((!server_entry && !cmd->pending && !server->standalone) ||
4975 (server_entry && !server_entry->connection && !cmd->pending &&
4976 !server->standalone) ||
4977 (server_entry && !server_entry->data.public_key && !cmd->pending &&
4978 !server->standalone)) {
4982 old_ident = silc_command_get_ident(cmd->payload);
4983 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
4984 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
4986 silc_server_packet_send(server, server->router->connection,
4987 SILC_PACKET_COMMAND, cmd->packet->flags,
4988 tmpbuf->data, tmpbuf->len, TRUE);
4990 /* Reprocess this packet after received reply from router */
4991 silc_server_command_pending(server, SILC_COMMAND_GETKEY,
4992 silc_command_get_ident(cmd->payload),
4993 silc_server_command_destructor,
4994 silc_server_command_getkey,
4995 silc_server_command_dup(cmd));
4996 cmd->pending = TRUE;
4998 silc_command_set_ident(cmd->payload, old_ident);
4999 silc_buffer_free(tmpbuf);
5003 if (!server_entry && cmd->pending) {
5004 silc_server_command_send_status_reply(cmd, SILC_COMMAND_GETKEY,
5005 SILC_STATUS_ERR_NO_SUCH_SERVER_ID);
5009 /* The client is locally connected, just get the public key and
5011 tmp = silc_pkcs_public_key_encode(server_entry->data.public_key, &tmp_len);
5012 pk = silc_buffer_alloc(4 + tmp_len);
5013 silc_buffer_pull_tail(pk, SILC_BUFFER_END(pk));
5014 silc_buffer_format(pk,
5015 SILC_STR_UI_SHORT(tmp_len),
5016 SILC_STR_UI_SHORT(SILC_SKE_PK_TYPE_SILC),
5017 SILC_STR_UI_XNSTRING(tmp, tmp_len),
5024 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
5025 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_GETKEY,
5026 SILC_STATUS_OK, ident, 2,
5028 3, pk->data, pk->len);
5029 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
5030 packet->data, packet->len, FALSE);
5031 silc_buffer_free(packet);
5032 silc_buffer_free(pk);
5036 silc_id_payload_free(idp);
5037 silc_free(client_id);
5038 silc_free(server_id);
5039 silc_server_command_free(cmd);