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,
772 client_id[i], TRUE, NULL);
773 if (!entry && check_global)
774 entry = silc_idlist_find_client_by_id(server->global_list,
775 client_id[i], TRUE, NULL);
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,
2485 client_id, TRUE, NULL);
2486 if (!remote_client) {
2487 remote_client = silc_idlist_find_client_by_id(server->global_list,
2488 client_id, TRUE, NULL);
2489 if (!remote_client) {
2490 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
2491 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID);
2497 comment = silc_argument_get_arg_type(cmd->args, 2, &tmp_len2);
2501 /* Send reply to the sender */
2502 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
2505 /* Send the KILL notify packets. First send it to the channel, then
2506 to our primary router and then directly to the client who is being
2507 killed right now. */
2509 /* Send KILLED notify to the channels. It is not sent to the client
2510 as it will be sent differently destined directly to the client and not
2512 silc_server_send_notify_on_channels(server, remote_client,
2513 remote_client, SILC_NOTIFY_TYPE_KILLED,
2516 comment, comment ? tmp_len2 : 0);
2518 /* Send KILLED notify to primary route */
2519 if (!server->standalone)
2520 silc_server_send_notify_killed(server, server->router->connection, TRUE,
2521 remote_client->id, comment);
2523 /* Send KILLED notify to the client directly */
2524 silc_server_send_notify_killed(server, remote_client->connection ?
2525 remote_client->connection :
2526 remote_client->router->connection, FALSE,
2527 remote_client->id, comment);
2529 /* Remove the client from all channels. This generates new keys to the
2530 channels as well. */
2531 silc_server_remove_from_channels(server, NULL, remote_client, FALSE,
2534 /* Remove the client entry, If it is locally connected then we will also
2535 disconnect the client here */
2536 if (remote_client->data.registered && remote_client->connection) {
2537 /* Remove locally conneted client */
2538 SilcSocketConnection sock = remote_client->connection;
2539 silc_server_free_client_data(server, sock, remote_client, FALSE, NULL);
2540 silc_server_close_connection(server, sock);
2542 /* Remove remote client */
2543 if (!silc_idlist_del_client(server->global_list, remote_client))
2544 silc_idlist_del_client(server->local_list, remote_client);
2548 silc_server_command_free(cmd);
2551 /* Server side of command INFO. This sends information about us to
2552 the client. If client requested specific server we will send the
2553 command to that server. */
2555 SILC_SERVER_CMD_FUNC(info)
2557 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2558 SilcServer server = cmd->server;
2559 SilcBuffer packet, idp;
2562 char *dest_server, *server_info = NULL, *server_name;
2563 uint16 ident = silc_command_get_ident(cmd->payload);
2564 SilcServerEntry entry = NULL;
2565 SilcServerID *server_id = NULL;
2567 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_INFO, cmd, 0, 2);
2569 /* Get server name */
2570 dest_server = silc_argument_get_arg_type(cmd->args, 1, NULL);
2573 tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
2575 server_id = silc_id_payload_parse_id(tmp, tmp_len);
2577 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INFO,
2578 SILC_STATUS_ERR_NO_SERVER_ID);
2584 /* Check whether we have this server cached */
2585 entry = silc_idlist_find_server_by_id(server->local_list,
2586 server_id, TRUE, NULL);
2588 entry = silc_idlist_find_server_by_id(server->global_list,
2589 server_id, TRUE, NULL);
2590 if (!entry && server->server_type == SILC_ROUTER) {
2591 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INFO,
2592 SILC_STATUS_ERR_NO_SUCH_SERVER);
2598 /* Some buggy servers has sent request to router about themselves. */
2599 if (server->server_type == SILC_ROUTER && cmd->sock->user_data == entry)
2602 if ((!dest_server && !server_id && !entry) || (entry &&
2603 entry == server->id_entry) ||
2604 (dest_server && !cmd->pending &&
2605 !strncasecmp(dest_server, server->server_name, strlen(dest_server)))) {
2606 /* Send our reply */
2607 char info_string[256];
2609 memset(info_string, 0, sizeof(info_string));
2610 snprintf(info_string, sizeof(info_string),
2611 "location: %s server: %s admin: %s <%s>",
2612 server->config->admin_info->location,
2613 server->config->admin_info->server_type,
2614 server->config->admin_info->admin_name,
2615 server->config->admin_info->admin_email);
2617 server_info = info_string;
2618 entry = server->id_entry;
2620 /* Check whether we have this server cached */
2621 if (!entry && dest_server) {
2622 entry = silc_idlist_find_server_by_name(server->global_list,
2623 dest_server, TRUE, NULL);
2625 entry = silc_idlist_find_server_by_name(server->local_list,
2626 dest_server, TRUE, NULL);
2630 if (!cmd->pending &&
2631 server->server_type == SILC_ROUTER && entry && !entry->server_info) {
2632 /* Send to the server */
2636 old_ident = silc_command_get_ident(cmd->payload);
2637 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
2638 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
2640 silc_server_packet_send(server, entry->connection,
2641 SILC_PACKET_COMMAND, cmd->packet->flags,
2642 tmpbuf->data, tmpbuf->len, TRUE);
2644 /* Reprocess this packet after received reply from router */
2645 silc_server_command_pending(server, SILC_COMMAND_INFO,
2646 silc_command_get_ident(cmd->payload),
2647 silc_server_command_destructor,
2648 silc_server_command_info,
2649 silc_server_command_dup(cmd));
2650 cmd->pending = TRUE;
2651 silc_command_set_ident(cmd->payload, old_ident);
2652 silc_buffer_free(tmpbuf);
2656 if (!entry && !cmd->pending && !server->standalone) {
2657 /* Send to the primary router */
2661 old_ident = silc_command_get_ident(cmd->payload);
2662 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
2663 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
2665 silc_server_packet_send(server, server->router->connection,
2666 SILC_PACKET_COMMAND, cmd->packet->flags,
2667 tmpbuf->data, tmpbuf->len, TRUE);
2669 /* Reprocess this packet after received reply from router */
2670 silc_server_command_pending(server, SILC_COMMAND_INFO,
2671 silc_command_get_ident(cmd->payload),
2672 silc_server_command_destructor,
2673 silc_server_command_info,
2674 silc_server_command_dup(cmd));
2675 cmd->pending = TRUE;
2676 silc_command_set_ident(cmd->payload, old_ident);
2677 silc_buffer_free(tmpbuf);
2683 silc_free(server_id);
2686 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INFO,
2687 SILC_STATUS_ERR_NO_SUCH_SERVER);
2691 idp = silc_id_payload_encode(entry->id, SILC_ID_SERVER);
2693 server_info = entry->server_info;
2694 server_name = entry->server_name;
2696 /* Send the reply */
2698 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_INFO,
2699 SILC_STATUS_OK, ident, 3,
2700 2, idp->data, idp->len,
2702 strlen(server_name),
2704 strlen(server_info));
2706 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_INFO,
2707 SILC_STATUS_OK, ident, 2,
2708 2, idp->data, idp->len,
2710 strlen(server_name));
2711 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
2712 packet->data, packet->len, FALSE);
2714 silc_buffer_free(packet);
2715 silc_buffer_free(idp);
2718 silc_server_command_free(cmd);
2721 /* Server side of command PING. This just replies to the ping. */
2723 SILC_SERVER_CMD_FUNC(ping)
2725 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
2726 SilcServer server = cmd->server;
2731 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_INFO, cmd, 1, 2);
2734 tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
2736 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PING,
2737 SILC_STATUS_ERR_NO_SERVER_ID);
2740 id = silc_id_str2id(tmp, len, SILC_ID_SERVER);
2744 if (SILC_ID_SERVER_COMPARE(id, server->id)) {
2745 /* Send our reply */
2746 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PING,
2749 silc_server_command_send_status_reply(cmd, SILC_COMMAND_PING,
2750 SILC_STATUS_ERR_NO_SUCH_SERVER);
2757 silc_server_command_free(cmd);
2760 /* Internal routine to join channel. The channel sent to this function
2761 has been either created or resolved from ID lists. This joins the sent
2762 client to the channel. */
2764 static void silc_server_command_join_channel(SilcServer server,
2765 SilcServerCommandContext cmd,
2766 SilcChannelEntry channel,
2767 SilcClientID *client_id,
2771 SilcSocketConnection sock = cmd->sock;
2773 uint32 tmp_len, user_count;
2774 unsigned char *passphrase = NULL, mode[4], tmp2[4], tmp3[4];
2775 SilcClientEntry client;
2776 SilcChannelClientEntry chl;
2777 SilcBuffer reply, chidp, clidp, keyp = NULL, user_list, mode_list;
2778 uint16 ident = silc_command_get_ident(cmd->payload);
2779 char check[512], check2[512];
2781 SILC_LOG_DEBUG(("Start"));
2786 /* Get the client entry */
2787 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT) {
2788 client = (SilcClientEntry)sock->user_data;
2790 client = silc_server_get_client_resolve(server, client_id);
2795 /* The client info is being resolved. Reprocess this packet after
2796 receiving the reply to the query. */
2797 silc_server_command_pending(server, SILC_COMMAND_WHOIS,
2798 server->cmd_ident, NULL,
2799 silc_server_command_join,
2800 silc_server_command_dup(cmd));
2801 cmd->pending = TRUE;
2805 cmd->pending = FALSE;
2809 * Check channel modes
2812 memset(check, 0, sizeof(check));
2813 memset(check2, 0, sizeof(check2));
2814 strncat(check, client->nickname, strlen(client->nickname));
2815 strncat(check, "!", 1);
2816 strncat(check, client->username, strlen(client->username));
2817 if (!strchr(client->username, '@')) {
2818 strncat(check, "@", 1);
2819 strncat(check, cmd->sock->hostname, strlen(cmd->sock->hostname));
2822 strncat(check2, client->nickname, strlen(client->nickname));
2823 if (!strchr(client->nickname, '@')) {
2824 strncat(check2, "@", 1);
2825 strncat(check2, server->server_name, strlen(server->server_name));
2827 strncat(check2, "!", 1);
2828 strncat(check2, client->username, strlen(client->username));
2829 if (!strchr(client->username, '@')) {
2830 strncat(check2, "@", 1);
2831 strncat(check2, cmd->sock->hostname, strlen(cmd->sock->hostname));
2834 /* Check invite list if channel is invite-only channel */
2835 if (channel->mode & SILC_CHANNEL_MODE_INVITE) {
2836 if (!channel->invite_list ||
2837 (!silc_string_match(channel->invite_list, check) &&
2838 !silc_string_match(channel->invite_list, check2))) {
2839 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2840 SILC_STATUS_ERR_NOT_INVITED);
2845 /* Check ban list if it exists. If the client's nickname, server,
2846 username and/or hostname is in the ban list the access to the
2847 channel is denied. */
2848 if (channel->ban_list) {
2849 if (silc_string_match(channel->ban_list, check) ||
2850 silc_string_match(channel->ban_list, check2)) {
2851 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2852 SILC_STATUS_ERR_BANNED_FROM_CHANNEL);
2857 /* Get passphrase */
2858 tmp = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
2860 passphrase = silc_calloc(tmp_len, sizeof(*passphrase));
2861 memcpy(passphrase, tmp, tmp_len);
2864 /* Check the channel passphrase if set. */
2865 if (channel->mode & SILC_CHANNEL_MODE_PASSPHRASE) {
2866 if (!passphrase || memcmp(channel->passphrase, passphrase,
2867 strlen(channel->passphrase))) {
2868 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2869 SILC_STATUS_ERR_BAD_PASSWORD);
2874 /* Check user count limit if set. */
2875 if (channel->mode & SILC_CHANNEL_MODE_ULIMIT) {
2876 if (silc_hash_table_count(channel->user_list) + 1 >
2877 channel->user_limit) {
2878 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2879 SILC_STATUS_ERR_CHANNEL_IS_FULL);
2885 * Client is allowed to join to the channel. Make it happen.
2888 /* Check whether the client already is on the channel */
2889 if (silc_server_client_on_channel(client, channel)) {
2890 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
2891 SILC_STATUS_ERR_USER_ON_CHANNEL);
2895 /* Generate new channel key as protocol dictates */
2896 if ((!created && silc_hash_table_count(channel->user_list) > 0) ||
2897 !channel->channel_key)
2898 if (!silc_server_create_channel_key(server, channel, 0))
2901 /* Send the channel key. This is broadcasted to the channel but is not
2902 sent to the client who is joining to the channel. */
2903 if (!(channel->mode & SILC_CHANNEL_MODE_PRIVKEY))
2904 silc_server_send_channel_key(server, NULL, channel,
2905 server->server_type == SILC_ROUTER ?
2906 FALSE : !server->standalone);
2908 /* Join the client to the channel by adding it to channel's user list.
2909 Add also the channel to client entry's channels list for fast cross-
2911 chl = silc_calloc(1, sizeof(*chl));
2913 chl->client = client;
2914 chl->channel = channel;
2915 silc_hash_table_add(channel->user_list, client, chl);
2916 silc_hash_table_add(client->channels, channel, chl);
2918 /* Get users on the channel */
2919 silc_server_get_users_on_channel(server, channel, &user_list, &mode_list,
2922 /* Encode Client ID Payload of the original client who wants to join */
2923 clidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
2925 /* Encode command reply packet */
2926 chidp = silc_id_payload_encode(channel->id, SILC_ID_CHANNEL);
2927 SILC_PUT32_MSB(channel->mode, mode);
2928 SILC_PUT32_MSB(created, tmp2);
2929 SILC_PUT32_MSB(user_count, tmp3);
2931 if (!(channel->mode & SILC_CHANNEL_MODE_PRIVKEY)) {
2932 tmp = silc_id_id2str(channel->id, SILC_ID_CHANNEL);
2933 keyp = silc_channel_key_payload_encode(SILC_ID_CHANNEL_LEN, tmp,
2934 strlen(channel->channel_key->
2936 channel->channel_key->cipher->name,
2937 channel->key_len / 8, channel->key);
2942 silc_command_reply_payload_encode_va(SILC_COMMAND_JOIN,
2943 SILC_STATUS_OK, ident, 13,
2944 2, channel->channel_name,
2945 strlen(channel->channel_name),
2946 3, chidp->data, chidp->len,
2947 4, clidp->data, clidp->len,
2950 7, keyp ? keyp->data : NULL,
2951 keyp ? keyp->len : 0,
2952 8, channel->ban_list,
2954 strlen(channel->ban_list) : 0,
2955 9, channel->invite_list,
2956 channel->invite_list ?
2957 strlen(channel->invite_list) : 0,
2960 strlen(channel->topic) : 0,
2961 11, channel->hmac->hmac->name,
2962 strlen(channel->hmac->hmac->name),
2964 13, user_list->data, user_list->len,
2965 14, mode_list->data,
2968 /* Send command reply */
2969 silc_server_packet_send(server, sock, SILC_PACKET_COMMAND_REPLY, 0,
2970 reply->data, reply->len, FALSE);
2972 if (!cmd->pending) {
2973 /* Send JOIN notify to locally connected clients on the channel */
2974 silc_server_send_notify_to_channel(server, NULL, channel, FALSE,
2975 SILC_NOTIFY_TYPE_JOIN, 2,
2976 clidp->data, clidp->len,
2977 chidp->data, chidp->len);
2979 /* Send JOIN notify packet to our primary router */
2980 if (!server->standalone)
2981 silc_server_send_notify_join(server, server->router->connection,
2982 server->server_type == SILC_ROUTER ?
2983 TRUE : FALSE, channel, client->id);
2986 silc_buffer_free(reply);
2987 silc_buffer_free(clidp);
2988 silc_buffer_free(chidp);
2989 silc_buffer_free(keyp);
2990 silc_buffer_free(user_list);
2991 silc_buffer_free(mode_list);
2995 silc_free(passphrase);
2998 /* Server side of command JOIN. Joins client into requested channel. If
2999 the channel does not exist it will be created. */
3001 SILC_SERVER_CMD_FUNC(join)
3003 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
3004 SilcServer server = cmd->server;
3006 char *tmp, *channel_name = NULL, *cipher, *hmac;
3007 SilcChannelEntry channel;
3009 int created = FALSE;
3010 SilcClientID *client_id;
3012 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_JOIN, cmd, 1, 4);
3014 /* Get channel name */
3015 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
3017 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
3018 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3023 if (strlen(channel_name) > 256)
3024 channel_name[255] = '\0';
3026 if (silc_server_command_bad_chars(channel_name) == TRUE) {
3027 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
3028 SILC_STATUS_ERR_BAD_CHANNEL);
3032 /* Get Client ID of the client who is joining to the channel */
3033 tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
3035 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
3036 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3039 client_id = silc_id_payload_parse_id(tmp, tmp_len);
3041 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
3042 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3046 /* Get cipher and hmac name */
3047 cipher = silc_argument_get_arg_type(cmd->args, 4, NULL);
3048 hmac = silc_argument_get_arg_type(cmd->args, 5, NULL);
3050 /* See if the channel exists */
3051 channel = silc_idlist_find_channel_by_name(server->local_list,
3052 channel_name, NULL);
3054 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT) {
3055 /* If this is coming from client the Client ID in the command packet must
3056 be same as the client's ID. */
3057 if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT) {
3058 SilcClientEntry entry = (SilcClientEntry)cmd->sock->user_data;
3059 if (!SILC_ID_CLIENT_COMPARE(entry->id, client_id)) {
3060 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
3061 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3066 if (!channel || !channel->id) {
3067 /* Channel not found */
3069 /* If we are standalone server we don't have a router, we just create
3070 the channel by ourselves. */
3071 if (server->standalone) {
3072 channel = silc_server_create_new_channel(server, server->id, cipher,
3073 hmac, channel_name, TRUE);
3075 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
3076 SILC_STATUS_ERR_UNKNOWN_ALGORITHM);
3080 umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
3085 /* The channel does not exist on our server. If we are normal server
3086 we will send JOIN command to our router which will handle the
3087 joining procedure (either creates the channel if it doesn't exist
3088 or joins the client to it). */
3089 if (server->server_type == SILC_SERVER) {
3093 /* If this is pending command callback then we've resolved
3094 it and it didn't work, return since we've notified the
3095 client already in the command reply callback. */
3099 old_ident = silc_command_get_ident(cmd->payload);
3100 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
3101 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
3103 /* Send JOIN command to our router */
3104 silc_server_packet_send(server, (SilcSocketConnection)
3105 server->router->connection,
3106 SILC_PACKET_COMMAND, cmd->packet->flags,
3107 tmpbuf->data, tmpbuf->len, TRUE);
3109 /* Reprocess this packet after received reply from router */
3110 silc_server_command_pending(server, SILC_COMMAND_JOIN,
3111 silc_command_get_ident(cmd->payload),
3112 silc_server_command_destructor,
3113 silc_server_command_join,
3114 silc_server_command_dup(cmd));
3115 cmd->pending = TRUE;
3119 /* We are router and the channel does not seem exist so we will check
3120 our global list as well for the channel. */
3121 channel = silc_idlist_find_channel_by_name(server->global_list,
3122 channel_name, NULL);
3124 /* Channel really does not exist, create it */
3125 channel = silc_server_create_new_channel(server, server->id, cipher,
3126 hmac, channel_name, TRUE);
3128 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
3129 SILC_STATUS_ERR_UNKNOWN_ALGORITHM);
3133 umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
3140 /* Channel not found */
3142 /* If the command came from router and/or we are normal server then
3143 something went wrong with the joining as the channel was not found.
3144 We can't do anything else but ignore this. */
3145 if (cmd->sock->type == SILC_SOCKET_TYPE_ROUTER ||
3146 server->server_type == SILC_SERVER)
3149 /* We are router and the channel does not seem exist so we will check
3150 our global list as well for the channel. */
3151 channel = silc_idlist_find_channel_by_name(server->global_list,
3152 channel_name, NULL);
3154 /* Channel really does not exist, create it */
3155 channel = silc_server_create_new_channel(server, server->id, cipher,
3156 hmac, channel_name, TRUE);
3158 silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
3159 SILC_STATUS_ERR_UNKNOWN_ALGORITHM);
3163 umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
3169 /* If the channel does not have global users and is also empty it means the
3170 channel was created globally (by our router) and the client will be the
3171 channel founder and operator. */
3172 if (!channel->global_users && !silc_hash_table_count(channel->user_list)) {
3173 umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
3174 created = TRUE; /* Created globally by our router */
3177 /* Join to the channel */
3178 silc_server_command_join_channel(server, cmd, channel, client_id,
3181 silc_free(client_id);
3184 silc_server_command_free(cmd);
3187 /* Server side of command MOTD. Sends server's current "message of the
3188 day" to the client. */
3190 SILC_SERVER_CMD_FUNC(motd)
3192 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
3193 SilcServer server = cmd->server;
3194 SilcBuffer packet, idp;
3195 char *motd, *dest_server;
3197 uint16 ident = silc_command_get_ident(cmd->payload);
3199 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_MOTD, cmd, 1, 1);
3201 /* Get server name */
3202 dest_server = silc_argument_get_arg_type(cmd->args, 1, NULL);
3204 silc_server_command_send_status_reply(cmd, SILC_COMMAND_MOTD,
3205 SILC_STATUS_ERR_NO_SUCH_SERVER);
3209 if (!strncasecmp(dest_server, server->server_name, strlen(dest_server))) {
3212 idp = silc_id_payload_encode(server->id_entry->id, SILC_ID_SERVER);
3214 if (server->config && server->config->motd &&
3215 server->config->motd->motd_file) {
3217 motd = silc_file_read(server->config->motd->motd_file, &motd_len);
3222 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_MOTD,
3223 SILC_STATUS_OK, ident, 2,
3229 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_MOTD,
3230 SILC_STATUS_OK, ident, 1,
3234 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
3235 packet->data, packet->len, FALSE);
3236 silc_buffer_free(packet);
3237 silc_buffer_free(idp);
3239 SilcServerEntry entry;
3241 /* Check whether we have this server cached */
3242 entry = silc_idlist_find_server_by_name(server->global_list,
3243 dest_server, TRUE, NULL);
3245 entry = silc_idlist_find_server_by_name(server->local_list,
3246 dest_server, TRUE, NULL);
3249 if (server->server_type == SILC_ROUTER && !cmd->pending &&
3250 entry && !entry->motd) {
3251 /* Send to the server */
3255 old_ident = silc_command_get_ident(cmd->payload);
3256 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
3257 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
3259 silc_server_packet_send(server, entry->connection,
3260 SILC_PACKET_COMMAND, cmd->packet->flags,
3261 tmpbuf->data, tmpbuf->len, TRUE);
3263 /* Reprocess this packet after received reply from router */
3264 silc_server_command_pending(server, SILC_COMMAND_MOTD,
3265 silc_command_get_ident(cmd->payload),
3266 silc_server_command_destructor,
3267 silc_server_command_motd,
3268 silc_server_command_dup(cmd));
3269 cmd->pending = TRUE;
3270 silc_command_set_ident(cmd->payload, old_ident);
3271 silc_buffer_free(tmpbuf);
3275 if (!entry && !cmd->pending && !server->standalone) {
3276 /* Send to the primary router */
3280 old_ident = silc_command_get_ident(cmd->payload);
3281 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
3282 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
3284 silc_server_packet_send(server, server->router->connection,
3285 SILC_PACKET_COMMAND, cmd->packet->flags,
3286 tmpbuf->data, tmpbuf->len, TRUE);
3288 /* Reprocess this packet after received reply from router */
3289 silc_server_command_pending(server, SILC_COMMAND_MOTD,
3290 silc_command_get_ident(cmd->payload),
3291 silc_server_command_destructor,
3292 silc_server_command_motd,
3293 silc_server_command_dup(cmd));
3294 cmd->pending = TRUE;
3295 silc_command_set_ident(cmd->payload, old_ident);
3296 silc_buffer_free(tmpbuf);
3301 silc_server_command_send_status_reply(cmd, SILC_COMMAND_INFO,
3302 SILC_STATUS_ERR_NO_SUCH_SERVER);
3306 idp = silc_id_payload_encode(server->id_entry->id, SILC_ID_SERVER);
3309 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_MOTD,
3310 SILC_STATUS_OK, ident, 2,
3313 strlen(entry->motd));
3315 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_MOTD,
3316 SILC_STATUS_OK, ident, 1,
3319 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
3320 packet->data, packet->len, FALSE);
3321 silc_buffer_free(packet);
3322 silc_buffer_free(idp);
3326 silc_server_command_free(cmd);
3329 /* Server side of command UMODE. Client can use this command to set/unset
3330 user mode. Client actually cannot set itself to be as server/router
3331 operator so this can be used only to unset the modes. */
3333 SILC_SERVER_CMD_FUNC(umode)
3335 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
3336 SilcServer server = cmd->server;
3337 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
3339 unsigned char *tmp_mask;
3341 uint16 ident = silc_command_get_ident(cmd->payload);
3343 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
3346 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_UMODE, cmd, 2, 2);
3348 /* Get the client's mode mask */
3349 tmp_mask = silc_argument_get_arg_type(cmd->args, 2, NULL);
3351 silc_server_command_send_status_reply(cmd, SILC_COMMAND_UMODE,
3352 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3355 SILC_GET32_MSB(mask, tmp_mask);
3361 if (mask & SILC_UMODE_SERVER_OPERATOR) {
3362 if (!(client->mode & SILC_UMODE_SERVER_OPERATOR)) {
3363 /* Cannot operator mode */
3364 silc_server_command_send_status_reply(cmd, SILC_COMMAND_UMODE,
3365 SILC_STATUS_ERR_PERM_DENIED);
3369 if (client->mode & SILC_UMODE_SERVER_OPERATOR)
3370 /* Remove the server operator rights */
3371 client->mode &= ~SILC_UMODE_SERVER_OPERATOR;
3374 if (mask & SILC_UMODE_ROUTER_OPERATOR) {
3375 if (!(client->mode & SILC_UMODE_ROUTER_OPERATOR)) {
3376 /* Cannot operator mode */
3377 silc_server_command_send_status_reply(cmd, SILC_COMMAND_UMODE,
3378 SILC_STATUS_ERR_PERM_DENIED);
3382 if (client->mode & SILC_UMODE_ROUTER_OPERATOR)
3383 /* Remove the router operator rights */
3384 client->mode &= ~SILC_UMODE_ROUTER_OPERATOR;
3387 if (mask & SILC_UMODE_GONE) {
3388 client->mode |= SILC_UMODE_GONE;
3390 if (client->mode & SILC_UMODE_GONE)
3391 /* Remove the gone status */
3392 client->mode &= ~SILC_UMODE_GONE;
3395 /* Send UMODE change to primary router */
3396 if (!server->standalone)
3397 silc_server_send_notify_umode(server, server->router->connection, TRUE,
3398 client->id, client->mode);
3400 /* Send command reply to sender */
3401 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_UMODE,
3402 SILC_STATUS_OK, ident, 1,
3404 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
3405 packet->data, packet->len, FALSE);
3406 silc_buffer_free(packet);
3409 silc_server_command_free(cmd);
3412 /* Checks that client has rights to add or remove channel modes. If any
3413 of the checks fails FALSE is returned. */
3415 int silc_server_check_cmode_rights(SilcChannelEntry channel,
3416 SilcChannelClientEntry client,
3419 int is_op = client->mode & SILC_CHANNEL_UMODE_CHANOP;
3420 int is_fo = client->mode & SILC_CHANNEL_UMODE_CHANFO;
3422 /* Check whether has rights to change anything */
3423 if (!is_op && !is_fo)
3426 /* Check whether has rights to change everything */
3430 /* We know that client is channel operator, check that they are not
3431 changing anything that requires channel founder rights. Rest of the
3432 modes are available automatically for channel operator. */
3434 if (mode & SILC_CHANNEL_MODE_PRIVKEY) {
3435 if (is_op && !is_fo)
3438 if (channel->mode & SILC_CHANNEL_MODE_PRIVKEY) {
3439 if (is_op && !is_fo)
3444 if (mode & SILC_CHANNEL_MODE_PASSPHRASE) {
3445 if (is_op && !is_fo)
3448 if (channel->mode & SILC_CHANNEL_MODE_PASSPHRASE) {
3449 if (is_op && !is_fo)
3454 if (mode & SILC_CHANNEL_MODE_CIPHER) {
3455 if (is_op && !is_fo)
3458 if (channel->mode & SILC_CHANNEL_MODE_CIPHER) {
3459 if (is_op && !is_fo)
3464 if (mode & SILC_CHANNEL_MODE_FOUNDER_AUTH) {
3465 if (is_op && !is_fo)
3468 if (channel->mode & SILC_CHANNEL_MODE_FOUNDER_AUTH) {
3469 if (is_op && !is_fo)
3477 /* Server side command of CMODE. Changes channel mode */
3479 SILC_SERVER_CMD_FUNC(cmode)
3481 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
3482 SilcServer server = cmd->server;
3483 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
3484 SilcIDListData idata = (SilcIDListData)client;
3485 SilcChannelID *channel_id;
3486 SilcChannelEntry channel;
3487 SilcChannelClientEntry chl;
3488 SilcBuffer packet, cidp;
3489 unsigned char *tmp, *tmp_id, *tmp_mask;
3490 char *cipher = NULL, *hmac = NULL;
3491 uint32 mode_mask, tmp_len, tmp_len2;
3492 uint16 ident = silc_command_get_ident(cmd->payload);
3494 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_CMODE, cmd, 2, 7);
3496 /* Get Channel ID */
3497 tmp_id = silc_argument_get_arg_type(cmd->args, 1, &tmp_len2);
3499 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3500 SILC_STATUS_ERR_NO_CHANNEL_ID);
3503 channel_id = silc_id_payload_parse_id(tmp_id, tmp_len2);
3505 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3506 SILC_STATUS_ERR_NO_CHANNEL_ID);
3510 /* Get the channel mode mask */
3511 tmp_mask = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
3513 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3514 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3517 SILC_GET32_MSB(mode_mask, tmp_mask);
3519 /* Get channel entry */
3520 channel = silc_idlist_find_channel_by_id(server->local_list,
3523 channel = silc_idlist_find_channel_by_id(server->global_list,
3526 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3527 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
3532 /* Check whether this client is on the channel */
3533 if (!silc_server_client_on_channel(client, channel)) {
3534 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3535 SILC_STATUS_ERR_NOT_ON_CHANNEL);
3539 /* Get entry to the channel user list */
3540 silc_hash_table_find(channel->user_list, client, NULL, (void *)&chl);
3542 /* Check that client has rights to change any requested channel modes */
3543 if (!silc_server_check_cmode_rights(channel, chl, mode_mask)) {
3544 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3545 SILC_STATUS_ERR_NO_CHANNEL_PRIV);
3550 * Check the modes. Modes that requires nothing special operation are
3554 if (mode_mask & SILC_CHANNEL_MODE_PRIVKEY) {
3555 /* Channel uses private keys to protect traffic. Client(s) has set the
3556 key locally they want to use, server does not know that key. */
3557 /* Nothing interesting to do here */
3559 if (channel->mode & SILC_CHANNEL_MODE_PRIVKEY) {
3560 /* The mode is removed and we need to generate and distribute
3561 new channel key. Clients are not using private channel keys
3562 anymore after this. */
3564 /* Re-generate channel key */
3565 if (!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 if (!silc_server_create_channel_key(server, channel, 0))
3650 /* Send the channel key. This sends it to our local clients and if
3651 we are normal server to our router as well. */
3652 silc_server_send_channel_key(server, NULL, channel,
3653 server->server_type == SILC_ROUTER ?
3654 FALSE : !server->standalone);
3657 if (channel->mode & SILC_CHANNEL_MODE_CIPHER) {
3658 /* Cipher mode is unset. Remove the cipher and revert back to
3660 cipher = channel->cipher;
3662 /* Delete old cipher and allocate default one */
3663 silc_cipher_free(channel->channel_key);
3664 if (!silc_cipher_alloc(cipher ? cipher : "aes-256-cbc",
3665 &channel->channel_key)) {
3666 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3667 SILC_STATUS_ERR_UNKNOWN_ALGORITHM);
3671 /* Re-generate channel key */
3672 if (!silc_server_create_channel_key(server, channel, 0))
3675 /* Send the channel key. This sends it to our local clients and if
3676 we are normal server to our router as well. */
3677 silc_server_send_channel_key(server, NULL, channel,
3678 server->server_type == SILC_ROUTER ?
3679 FALSE : !server->standalone);
3683 if (mode_mask & SILC_CHANNEL_MODE_HMAC) {
3684 if (!(channel->mode & SILC_CHANNEL_MODE_HMAC)) {
3685 /* HMAC to use protect the traffic */
3686 unsigned char hash[32];
3689 hmac = silc_argument_get_arg_type(cmd->args, 6, NULL);
3691 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3692 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3696 /* Delete old hmac and allocate the new one */
3697 silc_hmac_free(channel->hmac);
3698 if (!silc_hmac_alloc(hmac, NULL, &channel->hmac)) {
3699 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3700 SILC_STATUS_ERR_UNKNOWN_ALGORITHM);
3704 /* Set the HMAC key out of current channel key. The client must do
3706 silc_hash_make(channel->hmac->hash, channel->key, channel->key_len / 8,
3708 silc_hmac_set_key(channel->hmac, hash,
3709 silc_hash_len(channel->hmac->hash));
3710 memset(hash, 0, sizeof(hash));
3713 if (channel->mode & SILC_CHANNEL_MODE_HMAC) {
3714 /* Hmac mode is unset. Remove the hmac and revert back to
3716 unsigned char hash[32];
3717 hmac = channel->hmac_name;
3719 /* Delete old hmac and allocate default one */
3720 silc_hmac_free(channel->hmac);
3721 if (!silc_hmac_alloc(hmac ? hmac : "hmac-sha1-96", NULL,
3723 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3724 SILC_STATUS_ERR_UNKNOWN_ALGORITHM);
3728 /* Set the HMAC key out of current channel key. The client must do
3730 silc_hash_make(channel->hmac->hash, channel->key, channel->key_len / 8,
3732 silc_hmac_set_key(channel->hmac, hash,
3733 silc_hash_len(channel->hmac->hash));
3734 memset(hash, 0, sizeof(hash));
3738 if (mode_mask & SILC_CHANNEL_MODE_FOUNDER_AUTH) {
3739 if (chl->mode & SILC_CHANNEL_UMODE_CHANFO) {
3740 if (!(channel->mode & SILC_CHANNEL_MODE_FOUNDER_AUTH)) {
3741 /* Set the founder authentication */
3742 SilcAuthPayload auth;
3744 tmp = silc_argument_get_arg_type(cmd->args, 7, &tmp_len);
3746 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3747 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3751 auth = silc_auth_payload_parse(tmp, tmp_len);
3753 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3754 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3758 /* Save the public key */
3759 tmp = silc_pkcs_public_key_encode(idata->public_key, &tmp_len);
3760 silc_pkcs_public_key_decode(tmp, tmp_len, &channel->founder_key);
3763 channel->founder_method = silc_auth_get_method(auth);
3765 if (channel->founder_method == SILC_AUTH_PASSWORD) {
3766 tmp = silc_auth_get_data(auth, &tmp_len);
3767 channel->founder_passwd =
3768 silc_calloc(tmp_len + 1, sizeof(*channel->founder_passwd));
3769 memcpy(channel->founder_passwd, tmp, tmp_len);
3770 channel->founder_passwd_len = tmp_len;
3772 /* Verify the payload before setting the mode */
3773 if (!silc_auth_verify(auth, channel->founder_method,
3774 channel->founder_key, 0, idata->hash,
3775 client->id, SILC_ID_CLIENT)) {
3776 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
3777 SILC_STATUS_ERR_AUTH_FAILED);
3782 silc_auth_payload_free(auth);
3786 if (chl->mode & SILC_CHANNEL_UMODE_CHANFO) {
3787 if (channel->mode & SILC_CHANNEL_MODE_FOUNDER_AUTH) {
3788 if (channel->founder_key)
3789 silc_pkcs_public_key_free(channel->founder_key);
3790 if (channel->founder_passwd) {
3791 silc_free(channel->founder_passwd);
3792 channel->founder_passwd = NULL;
3798 /* Finally, set the mode */
3799 channel->mode = mode_mask;
3801 /* Send CMODE_CHANGE notify */
3802 cidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
3803 silc_server_send_notify_to_channel(server, NULL, channel, FALSE,
3804 SILC_NOTIFY_TYPE_CMODE_CHANGE, 4,
3805 cidp->data, cidp->len,
3807 cipher, cipher ? strlen(cipher) : 0,
3808 hmac, hmac ? strlen(hmac) : 0);
3810 /* Set CMODE notify type to network */
3811 if (!server->standalone)
3812 silc_server_send_notify_cmode(server, server->router->connection,
3813 server->server_type == SILC_ROUTER ?
3814 TRUE : FALSE, channel,
3815 mode_mask, client->id, SILC_ID_CLIENT,
3818 /* Send command reply to sender */
3819 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_CMODE,
3820 SILC_STATUS_OK, ident, 2,
3821 2, tmp_id, tmp_len2,
3823 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
3824 packet->data, packet->len, FALSE);
3826 silc_buffer_free(packet);
3827 silc_free(channel_id);
3831 silc_server_command_free(cmd);
3834 /* Server side of CUMODE command. Changes client's mode on a channel. */
3836 SILC_SERVER_CMD_FUNC(cumode)
3838 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
3839 SilcServer server = cmd->server;
3840 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
3841 SilcIDListData idata = (SilcIDListData)client;
3842 SilcChannelID *channel_id;
3843 SilcClientID *client_id;
3844 SilcChannelEntry channel;
3845 SilcClientEntry target_client;
3846 SilcChannelClientEntry chl;
3847 SilcBuffer packet, idp;
3848 unsigned char *tmp_id, *tmp_ch_id, *tmp_mask;
3849 uint32 target_mask, sender_mask = 0, tmp_len, tmp_ch_len;
3851 uint16 ident = silc_command_get_ident(cmd->payload);
3853 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_CUMODE, cmd, 3, 4);
3855 /* Get Channel ID */
3856 tmp_ch_id = silc_argument_get_arg_type(cmd->args, 1, &tmp_ch_len);
3858 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3859 SILC_STATUS_ERR_NO_CHANNEL_ID);
3862 channel_id = silc_id_payload_parse_id(tmp_ch_id, tmp_ch_len);
3864 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3865 SILC_STATUS_ERR_NO_CHANNEL_ID);
3869 /* Get channel entry */
3870 channel = silc_idlist_find_channel_by_id(server->local_list,
3873 channel = silc_idlist_find_channel_by_id(server->global_list,
3876 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3877 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
3882 /* Check whether sender is on the channel */
3883 if (!silc_server_client_on_channel(client, channel)) {
3884 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3885 SILC_STATUS_ERR_NOT_ON_CHANNEL);
3889 /* Check that client has rights to change other's rights */
3890 silc_hash_table_find(channel->user_list, client, NULL, (void *)&chl);
3891 sender_mask = chl->mode;
3893 /* Get the target client's channel mode mask */
3894 tmp_mask = silc_argument_get_arg_type(cmd->args, 2, NULL);
3896 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3897 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3900 SILC_GET32_MSB(target_mask, tmp_mask);
3902 /* Get target Client ID */
3903 tmp_id = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
3905 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3906 SILC_STATUS_ERR_NO_CLIENT_ID);
3909 client_id = silc_id_payload_parse_id(tmp_id, tmp_len);
3911 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3912 SILC_STATUS_ERR_NO_CLIENT_ID);
3916 /* Get target client's entry */
3917 target_client = silc_idlist_find_client_by_id(server->local_list,
3918 client_id, TRUE, NULL);
3919 if (!target_client) {
3920 target_client = silc_idlist_find_client_by_id(server->global_list,
3921 client_id, TRUE, NULL);
3924 if (target_client != client &&
3925 !(sender_mask & SILC_CHANNEL_UMODE_CHANFO) &&
3926 !(sender_mask & SILC_CHANNEL_UMODE_CHANOP)) {
3927 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3928 SILC_STATUS_ERR_NO_CHANNEL_PRIV);
3932 /* Check whether target client is on the channel */
3933 if (target_client != client) {
3934 if (!silc_server_client_on_channel(target_client, channel)) {
3935 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3936 SILC_STATUS_ERR_USER_NOT_ON_CHANNEL);
3940 /* Get entry to the channel user list */
3941 silc_hash_table_find(channel->user_list, target_client, NULL,
3949 /* If the target client is founder, no one else can change their mode
3951 if (chl->mode & SILC_CHANNEL_UMODE_CHANFO && chl->client != target_client) {
3952 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3953 SILC_STATUS_ERR_NOT_YOU);
3957 if (target_mask & SILC_CHANNEL_UMODE_CHANFO) {
3958 /* The client tries to claim the founder rights. */
3959 unsigned char *tmp_auth;
3960 uint32 tmp_auth_len, auth_len;
3963 if (target_client != client) {
3964 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3965 SILC_STATUS_ERR_NOT_YOU);
3969 if (!(channel->mode & SILC_CHANNEL_MODE_FOUNDER_AUTH) ||
3970 !channel->founder_key) {
3971 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3972 SILC_STATUS_ERR_NOT_YOU);
3976 tmp_auth = silc_argument_get_arg_type(cmd->args, 4, &tmp_auth_len);
3978 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3979 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
3983 auth = (channel->founder_method == SILC_AUTH_PASSWORD ?
3984 (void *)channel->founder_passwd : (void *)channel->founder_key);
3985 auth_len = (channel->founder_method == SILC_AUTH_PASSWORD ?
3986 channel->founder_passwd_len : 0);
3988 if (!silc_auth_verify_data(tmp_auth, tmp_auth_len,
3989 channel->founder_method, auth, auth_len,
3990 idata->hash, client->id, SILC_ID_CLIENT)) {
3991 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
3992 SILC_STATUS_ERR_AUTH_FAILED);
3996 sender_mask = chl->mode |= SILC_CHANNEL_UMODE_CHANFO;
3999 if (chl->mode & SILC_CHANNEL_UMODE_CHANFO) {
4000 if (target_client == client) {
4001 /* Remove channel founder rights from itself */
4002 chl->mode &= ~SILC_CHANNEL_UMODE_CHANFO;
4005 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
4006 SILC_STATUS_ERR_NOT_YOU);
4012 if (target_mask & SILC_CHANNEL_UMODE_CHANOP) {
4013 /* Promote to operator */
4014 if (!(chl->mode & SILC_CHANNEL_UMODE_CHANOP)) {
4015 if (!(sender_mask & SILC_CHANNEL_UMODE_CHANOP) &&
4016 !(sender_mask & SILC_CHANNEL_UMODE_CHANFO)) {
4017 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
4018 SILC_STATUS_ERR_NO_CHANNEL_PRIV);
4022 chl->mode |= SILC_CHANNEL_UMODE_CHANOP;
4026 if (chl->mode & SILC_CHANNEL_UMODE_CHANOP) {
4027 if (!(sender_mask & SILC_CHANNEL_UMODE_CHANOP) &&
4028 !(sender_mask & SILC_CHANNEL_UMODE_CHANFO)) {
4029 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
4030 SILC_STATUS_ERR_NO_CHANNEL_PRIV);
4034 /* Demote to normal user */
4035 chl->mode &= ~SILC_CHANNEL_UMODE_CHANOP;
4040 idp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
4041 tmp_id = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
4043 /* Send notify to channel, notify only if mode was actually changed. */
4045 silc_server_send_notify_to_channel(server, NULL, channel, FALSE,
4046 SILC_NOTIFY_TYPE_CUMODE_CHANGE, 3,
4047 idp->data, idp->len,
4051 /* Set CUMODE notify type to network */
4052 if (!server->standalone)
4053 silc_server_send_notify_cumode(server, server->router->connection,
4054 server->server_type == SILC_ROUTER ?
4055 TRUE : FALSE, channel,
4056 target_mask, client->id,
4061 /* Send command reply to sender */
4062 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_CUMODE,
4063 SILC_STATUS_OK, ident, 3,
4065 3, tmp_ch_id, tmp_ch_len,
4066 4, tmp_id, tmp_len);
4067 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
4068 packet->data, packet->len, FALSE);
4070 silc_buffer_free(packet);
4071 silc_free(channel_id);
4072 silc_free(client_id);
4073 silc_buffer_free(idp);
4076 silc_server_command_free(cmd);
4079 /* Server side of KICK command. Kicks client out of channel. */
4081 SILC_SERVER_CMD_FUNC(kick)
4083 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4084 SilcServer server = cmd->server;
4085 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
4086 SilcClientEntry target_client;
4087 SilcChannelID *channel_id;
4088 SilcClientID *client_id;
4089 SilcChannelEntry channel;
4090 SilcChannelClientEntry chl;
4093 unsigned char *tmp, *comment;
4095 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_LEAVE, cmd, 1, 3);
4097 /* Get Channel ID */
4098 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
4100 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4101 SILC_STATUS_ERR_NO_CHANNEL_ID);
4104 channel_id = silc_id_payload_parse_id(tmp, tmp_len);
4106 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4107 SILC_STATUS_ERR_NO_CHANNEL_ID);
4111 /* Get channel entry */
4112 channel = silc_idlist_find_channel_by_id(server->local_list,
4115 channel = silc_idlist_find_channel_by_id(server->local_list,
4118 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4119 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
4124 /* Check whether sender is on the channel */
4125 if (!silc_server_client_on_channel(client, channel)) {
4126 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4127 SILC_STATUS_ERR_NOT_ON_CHANNEL);
4131 /* Check that the kicker is channel operator or channel founder */
4132 silc_hash_table_find(channel->user_list, client, NULL, (void *)&chl);
4133 if (chl->mode == SILC_CHANNEL_UMODE_NONE) {
4134 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4135 SILC_STATUS_ERR_NO_CHANNEL_PRIV);
4139 /* Get target Client ID */
4140 tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
4142 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4143 SILC_STATUS_ERR_NO_CLIENT_ID);
4146 client_id = silc_id_payload_parse_id(tmp, tmp_len);
4148 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4149 SILC_STATUS_ERR_NO_CLIENT_ID);
4153 /* Get target client's entry */
4154 target_client = silc_idlist_find_client_by_id(server->local_list,
4155 client_id, TRUE, NULL);
4156 if (!target_client) {
4157 target_client = silc_idlist_find_client_by_id(server->global_list,
4158 client_id, TRUE, NULL);
4161 /* Check that the target client is not channel founder. Channel founder
4162 cannot be kicked from the channel. */
4163 silc_hash_table_find(channel->user_list, target_client, NULL, (void *)&chl);
4164 if (chl->mode & SILC_CHANNEL_UMODE_CHANFO) {
4165 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4166 SILC_STATUS_ERR_NO_CHANNEL_FOPRIV);
4170 /* Check whether target client is on the channel */
4171 if (!silc_server_client_on_channel(target_client, channel)) {
4172 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4173 SILC_STATUS_ERR_USER_NOT_ON_CHANNEL);
4179 comment = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
4183 /* Send command reply to sender */
4184 silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
4187 /* Send KICKED notify to local clients on the channel */
4188 idp = silc_id_payload_encode(target_client->id, SILC_ID_CLIENT);
4189 silc_server_send_notify_to_channel(server, NULL, channel, FALSE,
4190 SILC_NOTIFY_TYPE_KICKED,
4192 idp->data, idp->len,
4193 comment, comment ? strlen(comment) : 0);
4194 silc_buffer_free(idp);
4196 /* Remove the client from the channel. If the channel does not exist
4197 after removing the client then the client kicked itself off the channel
4198 and we don't have to send anything after that. */
4199 if (!silc_server_remove_from_one_channel(server, NULL, channel,
4200 target_client, FALSE))
4203 /* Send KICKED notify to primary route */
4204 if (!server->standalone)
4205 silc_server_send_notify_kicked(server, server->router->connection,
4206 server->server_type == SILC_ROUTER ?
4207 TRUE : FALSE, channel,
4208 target_client->id, comment);
4210 if (!(channel->mode & SILC_CHANNEL_MODE_PRIVKEY)) {
4211 /* Re-generate channel key */
4212 if (!silc_server_create_channel_key(server, channel, 0))
4215 /* Send the channel key to the channel. The key of course is not sent
4216 to the client who was kicked off the channel. */
4217 silc_server_send_channel_key(server, target_client->connection, channel,
4218 server->server_type == SILC_ROUTER ?
4219 FALSE : !server->standalone);
4223 silc_server_command_free(cmd);
4226 /* Server side of OPER command. Client uses this comand to obtain server
4227 operator privileges to this server/router. */
4229 SILC_SERVER_CMD_FUNC(oper)
4231 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4232 SilcServer server = cmd->server;
4233 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
4234 unsigned char *username, *auth;
4236 SilcServerConfigSectionAdminConnection *admin;
4237 SilcIDListData idata = (SilcIDListData)client;
4239 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_OPER, cmd, 1, 2);
4241 if (!client || cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
4244 /* Get the username */
4245 username = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
4247 silc_server_command_send_status_reply(cmd, SILC_COMMAND_OPER,
4248 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
4252 /* Get the admin configuration */
4253 admin = silc_server_config_find_admin(server->config, cmd->sock->ip,
4254 username, client->nickname);
4256 admin = silc_server_config_find_admin(server->config, cmd->sock->hostname,
4257 username, client->nickname);
4259 silc_server_command_send_status_reply(cmd, SILC_COMMAND_OPER,
4260 SILC_STATUS_ERR_AUTH_FAILED);
4265 /* Get the authentication payload */
4266 auth = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
4268 silc_server_command_send_status_reply(cmd, SILC_COMMAND_OPER,
4269 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
4273 /* Verify the authentication data */
4274 if (!silc_auth_verify_data(auth, tmp_len, admin->auth_meth,
4275 admin->auth_data, admin->auth_data_len,
4276 idata->hash, client->id, SILC_ID_CLIENT)) {
4277 silc_server_command_send_status_reply(cmd, SILC_COMMAND_OPER,
4278 SILC_STATUS_ERR_AUTH_FAILED);
4282 /* Client is now server operator */
4283 client->mode |= SILC_UMODE_SERVER_OPERATOR;
4285 /* Send UMODE change to primary router */
4286 if (!server->standalone)
4287 silc_server_send_notify_umode(server, server->router->connection, TRUE,
4288 client->id, client->mode);
4290 /* Send reply to the sender */
4291 silc_server_command_send_status_reply(cmd, SILC_COMMAND_OPER,
4295 silc_server_command_free(cmd);
4298 /* Server side of SILCOPER command. Client uses this comand to obtain router
4299 operator privileges to this router. */
4301 SILC_SERVER_CMD_FUNC(silcoper)
4303 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4304 SilcServer server = cmd->server;
4305 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
4306 unsigned char *username, *auth;
4308 SilcServerConfigSectionAdminConnection *admin;
4309 SilcIDListData idata = (SilcIDListData)client;
4311 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_SILCOPER, cmd, 1, 2);
4313 if (!client || cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
4316 if (server->server_type == SILC_SERVER) {
4317 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
4318 SILC_STATUS_ERR_AUTH_FAILED);
4322 /* Get the username */
4323 username = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
4325 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
4326 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
4330 /* Get the admin configuration */
4331 admin = silc_server_config_find_admin(server->config, cmd->sock->ip,
4332 username, client->nickname);
4334 admin = silc_server_config_find_admin(server->config, cmd->sock->hostname,
4335 username, client->nickname);
4337 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
4338 SILC_STATUS_ERR_AUTH_FAILED);
4343 /* Get the authentication payload */
4344 auth = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
4346 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
4347 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
4351 /* Verify the authentication data */
4352 if (!silc_auth_verify_data(auth, tmp_len, admin->auth_meth,
4353 admin->auth_data, admin->auth_data_len,
4354 idata->hash, client->id, SILC_ID_CLIENT)) {
4355 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
4356 SILC_STATUS_ERR_AUTH_FAILED);
4360 /* Client is now router operator */
4361 client->mode |= SILC_UMODE_ROUTER_OPERATOR;
4363 /* Send UMODE change to primary router */
4364 if (!server->standalone)
4365 silc_server_send_notify_umode(server, server->router->connection, TRUE,
4366 client->id, client->mode);
4368 /* Send reply to the sender */
4369 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
4373 silc_server_command_free(cmd);
4376 /* Server side command of CONNECT. Connects us to the specified remote
4377 server or router. */
4379 SILC_SERVER_CMD_FUNC(connect)
4381 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4382 SilcServer server = cmd->server;
4383 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
4384 unsigned char *tmp, *host;
4386 uint32 port = SILC_PORT;
4388 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_CONNECT, cmd, 1, 2);
4390 if (!client || cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
4393 /* Check whether client has the permissions. */
4394 if (client->mode == SILC_UMODE_NONE) {
4395 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CONNECT,
4396 SILC_STATUS_ERR_NO_SERVER_PRIV);
4400 if (server->server_type == SILC_ROUTER &&
4401 client->mode & SILC_UMODE_SERVER_OPERATOR) {
4402 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CONNECT,
4403 SILC_STATUS_ERR_NO_ROUTER_PRIV);
4407 /* Get the remote server */
4408 host = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
4410 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CONNECT,
4411 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
4416 tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
4418 SILC_GET32_MSB(port, tmp);
4420 /* Create the connection. It is done with timeout and is async. */
4421 silc_server_create_connection(server, host, port);
4423 /* Send reply to the sender */
4424 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CONNECT,
4428 silc_server_command_free(cmd);
4431 /* Server side of command BAN. This is used to manage the ban list of the
4432 channel. To add clients and remove clients from the ban list. */
4434 SILC_SERVER_CMD_FUNC(ban)
4436 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4437 SilcServer server = cmd->server;
4438 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
4440 SilcChannelEntry channel;
4441 SilcChannelClientEntry chl;
4442 SilcChannelID *channel_id = NULL;
4443 unsigned char *id, *add, *del;
4444 uint32 id_len, tmp_len;
4445 uint16 ident = silc_command_get_ident(cmd->payload);
4447 if (cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
4450 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_BAN, cmd, 0, 3);
4452 /* Get Channel ID */
4453 id = silc_argument_get_arg_type(cmd->args, 1, &id_len);
4455 channel_id = silc_id_payload_parse_id(id, id_len);
4457 silc_server_command_send_status_reply(cmd, SILC_COMMAND_BAN,
4458 SILC_STATUS_ERR_NO_CHANNEL_ID);
4463 /* Get channel entry. The server must know about the channel since the
4464 client is expected to be on the channel. */
4465 channel = silc_idlist_find_channel_by_id(server->local_list,
4468 channel = silc_idlist_find_channel_by_id(server->global_list,
4471 silc_server_command_send_status_reply(cmd, SILC_COMMAND_BAN,
4472 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
4477 /* Check whether this client is on the channel */
4478 if (!silc_server_client_on_channel(client, channel)) {
4479 silc_server_command_send_status_reply(cmd, SILC_COMMAND_BAN,
4480 SILC_STATUS_ERR_NOT_ON_CHANNEL);
4484 /* Get entry to the channel user list */
4485 silc_hash_table_find(channel->user_list, client, NULL, (void *)&chl);
4487 /* The client must be at least channel operator. */
4488 if (!(chl->mode & SILC_CHANNEL_UMODE_CHANOP)) {
4489 silc_server_command_send_status_reply(cmd, SILC_COMMAND_BAN,
4490 SILC_STATUS_ERR_NO_CHANNEL_PRIV);
4494 /* Get the new ban and add it to the ban list */
4495 add = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
4497 if (!channel->ban_list)
4498 channel->ban_list = silc_calloc(tmp_len + 2, sizeof(*channel->ban_list));
4500 channel->ban_list = silc_realloc(channel->ban_list,
4501 sizeof(*channel->ban_list) *
4503 strlen(channel->ban_list) + 2));
4504 if (add[tmp_len - 1] == ',')
4505 add[tmp_len - 1] = '\0';
4507 strncat(channel->ban_list, add, tmp_len);
4508 strncat(channel->ban_list, ",", 1);
4511 /* Get the ban to be removed and remove it from the list */
4512 del = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
4513 if (del && channel->ban_list) {
4514 char *start, *end, *n;
4516 if (!strncmp(channel->ban_list, del, strlen(channel->ban_list) - 1)) {
4517 silc_free(channel->ban_list);
4518 channel->ban_list = NULL;
4520 start = strstr(channel->ban_list, del);
4521 if (start && strlen(start) >= tmp_len) {
4522 end = start + tmp_len;
4523 n = silc_calloc(strlen(channel->ban_list) - tmp_len, sizeof(*n));
4524 strncat(n, channel->ban_list, start - channel->ban_list);
4525 strncat(n, end + 1, ((channel->ban_list + strlen(channel->ban_list)) -
4527 silc_free(channel->ban_list);
4528 channel->ban_list = n;
4533 /* Send the BAN notify type to our primary router. */
4534 if (!server->standalone && (add || del))
4535 silc_server_send_notify_ban(server, server->router->connection,
4536 server->server_type == SILC_ROUTER ?
4537 TRUE : FALSE, channel, add, del);
4539 /* Send the reply back to the client */
4540 if (channel->ban_list)
4542 silc_command_reply_payload_encode_va(SILC_COMMAND_BAN,
4543 SILC_STATUS_OK, ident, 2,
4545 3, channel->ban_list,
4546 strlen(channel->ban_list) - 1);
4549 silc_command_reply_payload_encode_va(SILC_COMMAND_BAN,
4550 SILC_STATUS_OK, ident, 1,
4553 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
4554 packet->data, packet->len, FALSE);
4556 silc_buffer_free(packet);
4560 silc_free(channel_id);
4561 silc_server_command_free(cmd);
4564 /* Server side command of CLOSE. Closes connection to a specified server. */
4566 SILC_SERVER_CMD_FUNC(close)
4568 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4569 SilcServer server = cmd->server;
4570 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
4571 SilcServerEntry server_entry;
4572 SilcSocketConnection sock;
4575 unsigned char *name;
4576 uint32 port = SILC_PORT;
4578 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_CLOSE, cmd, 1, 2);
4580 if (!client || cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
4583 /* Check whether client has the permissions. */
4584 if (client->mode == SILC_UMODE_NONE) {
4585 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CLOSE,
4586 SILC_STATUS_ERR_NO_SERVER_PRIV);
4590 /* Get the remote server */
4591 name = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
4593 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CLOSE,
4594 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
4599 tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
4601 SILC_GET32_MSB(port, tmp);
4603 server_entry = silc_idlist_find_server_by_conn(server->local_list,
4604 name, port, FALSE, NULL);
4605 if (!server_entry) {
4606 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CLOSE,
4607 SILC_STATUS_ERR_NO_SERVER_ID);
4611 /* Send reply to the sender */
4612 silc_server_command_send_status_reply(cmd, SILC_COMMAND_CLOSE,
4615 /* Close the connection to the server */
4616 sock = (SilcSocketConnection)server_entry->connection;
4617 if (sock->user_data)
4618 silc_server_free_sock_user_data(server, sock);
4619 silc_server_close_connection(server, sock);
4622 silc_server_command_free(cmd);
4625 /* Server side command of SHUTDOWN. Shutdowns the server and closes all
4626 active connections. */
4628 SILC_SERVER_CMD_FUNC(shutdown)
4630 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4631 SilcServer server = cmd->server;
4632 SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
4634 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_SHUTDOWN, cmd, 0, 0);
4636 if (!client || cmd->sock->type != SILC_SOCKET_TYPE_CLIENT)
4639 /* Check whether client has the permission. */
4640 if (client->mode == SILC_UMODE_NONE) {
4641 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SHUTDOWN,
4642 SILC_STATUS_ERR_NO_SERVER_PRIV);
4646 /* Send reply to the sender */
4647 silc_server_command_send_status_reply(cmd, SILC_COMMAND_SHUTDOWN,
4650 /* Then, gracefully, or not, bring the server down. */
4651 silc_server_stop(server);
4655 silc_server_command_free(cmd);
4658 /* Server side command of LEAVE. Removes client from a channel. */
4660 SILC_SERVER_CMD_FUNC(leave)
4662 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4663 SilcServer server = cmd->server;
4664 SilcSocketConnection sock = cmd->sock;
4665 SilcClientEntry id_entry = (SilcClientEntry)cmd->sock->user_data;
4666 SilcChannelID *id = NULL;
4667 SilcChannelEntry channel;
4671 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_LEAVE, cmd, 1, 2);
4673 /* Get Channel ID */
4674 tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
4676 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
4677 SILC_STATUS_ERR_NO_CHANNEL_ID);
4680 id = silc_id_payload_parse_id(tmp, len);
4682 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
4683 SILC_STATUS_ERR_NO_CHANNEL_ID);
4687 /* Get channel entry */
4688 channel = silc_idlist_find_channel_by_id(server->local_list, id, NULL);
4690 channel = silc_idlist_find_channel_by_id(server->global_list, id, NULL);
4692 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
4693 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
4698 /* Check whether this client is on the channel */
4699 if (!silc_server_client_on_channel(id_entry, channel)) {
4700 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
4701 SILC_STATUS_ERR_NOT_ON_CHANNEL);
4705 /* Notify routers that they should remove this client from their list
4706 of clients on the channel. Send LEAVE notify type. */
4707 if (!server->standalone)
4708 silc_server_send_notify_leave(server, server->router->connection,
4709 server->server_type == SILC_ROUTER ?
4710 TRUE : FALSE, channel, id_entry->id);
4712 silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
4715 /* Remove client from channel */
4716 if (!silc_server_remove_from_one_channel(server, sock, channel, id_entry,
4718 /* If the channel does not exist anymore we won't send anything */
4721 if (!(channel->mode & SILC_CHANNEL_MODE_PRIVKEY)) {
4722 /* Re-generate channel key */
4723 if (!silc_server_create_channel_key(server, channel, 0))
4726 /* Send the channel key */
4727 silc_server_send_channel_key(server, NULL, channel,
4728 server->server_type == SILC_ROUTER ?
4729 FALSE : !server->standalone);
4735 silc_server_command_free(cmd);
4738 /* Server side of command USERS. Resolves clients and their USERS currently
4739 joined on the requested channel. The list of Client ID's and their modes
4740 on the channel is sent back. */
4742 SILC_SERVER_CMD_FUNC(users)
4744 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4745 SilcServer server = cmd->server;
4746 SilcChannelEntry channel;
4747 SilcChannelID *id = NULL;
4748 SilcBuffer packet, idp;
4749 unsigned char *channel_id;
4750 uint32 channel_id_len;
4751 SilcBuffer client_id_list;
4752 SilcBuffer client_mode_list;
4753 unsigned char lc[4];
4754 uint32 list_count = 0;
4755 uint16 ident = silc_command_get_ident(cmd->payload);
4758 SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_USERS, cmd, 1, 2);
4760 /* Get Channel ID */
4761 channel_id = silc_argument_get_arg_type(cmd->args, 1, &channel_id_len);
4763 /* Get channel name */
4764 channel_name = silc_argument_get_arg_type(cmd->args, 2, NULL);
4766 if (!channel_id && !channel_name) {
4767 silc_server_command_send_status_reply(cmd, SILC_COMMAND_USERS,
4768 SILC_STATUS_ERR_NO_CHANNEL_ID);
4773 id = silc_id_payload_parse_id(channel_id, channel_id_len);
4775 silc_server_command_send_status_reply(cmd, SILC_COMMAND_USERS,
4776 SILC_STATUS_ERR_NO_CHANNEL_ID);
4781 /* If we are server and we don't know about this channel we will send
4782 the command to our router. If we know about the channel then we also
4783 have the list of users already. */
4785 channel = silc_idlist_find_channel_by_id(server->local_list, id, NULL);
4787 channel = silc_idlist_find_channel_by_name(server->local_list,
4788 channel_name, NULL);
4791 if (server->server_type == SILC_SERVER && !server->standalone &&
4795 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
4796 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
4798 /* Send USERS command */
4799 silc_server_packet_send(server, server->router->connection,
4800 SILC_PACKET_COMMAND, cmd->packet->flags,
4801 tmpbuf->data, tmpbuf->len, TRUE);
4803 /* Reprocess this packet after received reply */
4804 silc_server_command_pending(server, SILC_COMMAND_USERS,
4805 silc_command_get_ident(cmd->payload),
4806 silc_server_command_destructor,
4807 silc_server_command_users,
4808 silc_server_command_dup(cmd));
4809 cmd->pending = TRUE;
4810 silc_command_set_ident(cmd->payload, ident);
4812 silc_buffer_free(tmpbuf);
4817 /* Check the global list as well. */
4819 channel = silc_idlist_find_channel_by_id(server->global_list, id, NULL);
4821 channel = silc_idlist_find_channel_by_name(server->global_list,
4822 channel_name, NULL);
4824 /* Channel really does not exist */
4825 silc_server_command_send_status_reply(cmd, SILC_COMMAND_USERS,
4826 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
4831 /* If the channel is private or secret do not send anything */
4832 if (channel->mode & (SILC_CHANNEL_MODE_PRIVATE | SILC_CHANNEL_MODE_SECRET)) {
4833 silc_server_command_send_status_reply(cmd, SILC_COMMAND_USERS,
4834 SILC_STATUS_ERR_NO_SUCH_CHANNEL);
4838 /* Get the users list */
4839 silc_server_get_users_on_channel(server, channel, &client_id_list,
4840 &client_mode_list, &list_count);
4843 SILC_PUT32_MSB(list_count, lc);
4846 idp = silc_id_payload_encode(channel->id, SILC_ID_CHANNEL);
4847 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_USERS,
4848 SILC_STATUS_OK, ident, 4,
4849 2, idp->data, idp->len,
4851 4, client_id_list->data,
4852 client_id_list->len,
4853 5, client_mode_list->data,
4854 client_mode_list->len);
4855 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
4856 packet->data, packet->len, FALSE);
4858 silc_buffer_free(idp);
4859 silc_buffer_free(packet);
4860 silc_buffer_free(client_id_list);
4861 silc_buffer_free(client_mode_list);
4866 silc_server_command_free(cmd);
4869 /* Server side of command GETKEY. This fetches the client's public key
4870 from the server where to the client is connected. */
4872 SILC_SERVER_CMD_FUNC(getkey)
4874 SilcServerCommandContext cmd = (SilcServerCommandContext)context;
4875 SilcServer server = cmd->server;
4877 SilcClientEntry client;
4878 SilcServerEntry server_entry;
4879 SilcClientID *client_id = NULL;
4880 SilcServerID *server_id = NULL;
4881 SilcIDPayload idp = NULL;
4882 uint16 ident = silc_command_get_ident(cmd->payload);
4888 SILC_LOG_DEBUG(("Start"));
4890 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
4892 silc_server_command_send_status_reply(cmd, SILC_COMMAND_GETKEY,
4893 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
4896 idp = silc_id_payload_parse_data(tmp, tmp_len);
4898 silc_server_command_send_status_reply(cmd, SILC_COMMAND_GETKEY,
4899 SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
4903 id_type = silc_id_payload_get_type(idp);
4904 if (id_type == SILC_ID_CLIENT) {
4905 client_id = silc_id_payload_get_id(idp);
4907 /* If the client is not found from local list there is no chance it
4908 would be locally connected client so send the command further. */
4909 client = silc_idlist_find_client_by_id(server->local_list,
4910 client_id, TRUE, NULL);
4912 client = silc_idlist_find_client_by_id(server->global_list,
4913 client_id, TRUE, NULL);
4915 if ((!client && !cmd->pending && !server->standalone) ||
4916 (client && !client->connection && !cmd->pending &&
4917 !server->standalone) ||
4918 (client && !client->data.public_key && !cmd->pending &&
4919 !server->standalone)) {
4922 SilcSocketConnection dest_sock;
4924 dest_sock = silc_server_get_client_route(server, NULL, 0,
4929 old_ident = silc_command_get_ident(cmd->payload);
4930 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
4931 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
4933 silc_server_packet_send(server, dest_sock,
4934 SILC_PACKET_COMMAND, cmd->packet->flags,
4935 tmpbuf->data, tmpbuf->len, TRUE);
4937 /* Reprocess this packet after received reply from router */
4938 silc_server_command_pending(server, SILC_COMMAND_GETKEY,
4939 silc_command_get_ident(cmd->payload),
4940 silc_server_command_destructor,
4941 silc_server_command_getkey,
4942 silc_server_command_dup(cmd));
4943 cmd->pending = TRUE;
4945 silc_command_set_ident(cmd->payload, old_ident);
4946 silc_buffer_free(tmpbuf);
4950 if (!client && cmd->pending) {
4951 silc_server_command_send_status_reply(cmd, SILC_COMMAND_GETKEY,
4952 SILC_STATUS_ERR_NO_SUCH_CLIENT_ID);
4956 /* The client is locally connected, just get the public key and
4958 tmp = silc_pkcs_public_key_encode(client->data.public_key, &tmp_len);
4959 pk = silc_buffer_alloc(4 + tmp_len);
4960 silc_buffer_pull_tail(pk, SILC_BUFFER_END(pk));
4961 silc_buffer_format(pk,
4962 SILC_STR_UI_SHORT(tmp_len),
4963 SILC_STR_UI_SHORT(SILC_SKE_PK_TYPE_SILC),
4964 SILC_STR_UI_XNSTRING(tmp, tmp_len),
4968 } else if (id_type == SILC_ID_SERVER) {
4969 server_id = silc_id_payload_get_id(idp);
4971 /* If the server is not found from local list there is no chance it
4972 would be locally connected server so send the command further. */
4973 server_entry = silc_idlist_find_server_by_id(server->local_list,
4974 server_id, TRUE, NULL);
4976 server_entry = silc_idlist_find_server_by_id(server->global_list,
4977 server_id, TRUE, NULL);
4979 if ((!server_entry && !cmd->pending && !server->standalone) ||
4980 (server_entry && !server_entry->connection && !cmd->pending &&
4981 !server->standalone) ||
4982 (server_entry && !server_entry->data.public_key && !cmd->pending &&
4983 !server->standalone)) {
4987 old_ident = silc_command_get_ident(cmd->payload);
4988 silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
4989 tmpbuf = silc_command_payload_encode_payload(cmd->payload);
4991 silc_server_packet_send(server, server->router->connection,
4992 SILC_PACKET_COMMAND, cmd->packet->flags,
4993 tmpbuf->data, tmpbuf->len, TRUE);
4995 /* Reprocess this packet after received reply from router */
4996 silc_server_command_pending(server, SILC_COMMAND_GETKEY,
4997 silc_command_get_ident(cmd->payload),
4998 silc_server_command_destructor,
4999 silc_server_command_getkey,
5000 silc_server_command_dup(cmd));
5001 cmd->pending = TRUE;
5003 silc_command_set_ident(cmd->payload, old_ident);
5004 silc_buffer_free(tmpbuf);
5008 if (!server_entry && cmd->pending) {
5009 silc_server_command_send_status_reply(cmd, SILC_COMMAND_GETKEY,
5010 SILC_STATUS_ERR_NO_SUCH_SERVER_ID);
5014 /* The client is locally connected, just get the public key and
5016 tmp = silc_pkcs_public_key_encode(server_entry->data.public_key, &tmp_len);
5017 pk = silc_buffer_alloc(4 + tmp_len);
5018 silc_buffer_pull_tail(pk, SILC_BUFFER_END(pk));
5019 silc_buffer_format(pk,
5020 SILC_STR_UI_SHORT(tmp_len),
5021 SILC_STR_UI_SHORT(SILC_SKE_PK_TYPE_SILC),
5022 SILC_STR_UI_XNSTRING(tmp, tmp_len),
5029 tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
5030 packet = silc_command_reply_payload_encode_va(SILC_COMMAND_GETKEY,
5031 SILC_STATUS_OK, ident, 2,
5033 3, pk->data, pk->len);
5034 silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
5035 packet->data, packet->len, FALSE);
5036 silc_buffer_free(packet);
5037 silc_buffer_free(pk);
5041 silc_id_payload_free(idp);
5042 silc_free(client_id);
5043 silc_free(server_id);
5044 silc_server_command_free(cmd);