command.c
- Author: Pekka Riikonen <priikone@poseidon.pspt.fi>
+ Author: Pekka Riikonen <priikone@silcnet.org>
- Copyright (C) 1997 - 2000 Pekka Riikonen
+ Copyright (C) 1997 - 2008 Pekka Riikonen
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
+ the Free Software Foundation; version 2 of the License.
+
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
#include "server_internal.h"
static int silc_server_is_registered(SilcServer server,
- SilcSocketConnection sock,
+ SilcPacketStream sock,
SilcServerCommandContext cmd,
SilcCommand command);
-static void
+static void
silc_server_command_send_status_reply(SilcServerCommandContext cmd,
SilcCommand command,
- SilcCommandStatus status);
-static void
+ SilcStatus status,
+ SilcStatus error);
+static void
silc_server_command_send_status_data(SilcServerCommandContext cmd,
SilcCommand command,
- SilcCommandStatus status,
- unsigned int arg_type,
- unsigned char *arg,
- unsigned int arg_len);
-static void silc_server_command_free(SilcServerCommandContext cmd);
-void silc_server_command_send_users(SilcServer server,
- SilcSocketConnection sock,
- SilcChannelEntry channel,
- int pending);
+ SilcStatus status,
+ SilcStatus error,
+ SilcUInt32 arg_type,
+ const unsigned char *arg,
+ SilcUInt32 arg_len);
+static bool
+silc_server_command_pending_error_check(SilcServerCommandContext cmd,
+ SilcServerCommandReplyContext cmdr,
+ SilcCommand command);
+SILC_TASK_CALLBACK(silc_server_command_process_timeout);
/* Server command list. */
SilcServerCommand silc_command_list[] =
SILC_SERVER_CMD(whois, WHOIS, SILC_CF_LAG | SILC_CF_REG),
SILC_SERVER_CMD(whowas, WHOWAS, SILC_CF_LAG | SILC_CF_REG),
SILC_SERVER_CMD(identify, IDENTIFY, SILC_CF_LAG | SILC_CF_REG),
- SILC_SERVER_CMD(nick, NICK, SILC_CF_LAG | SILC_CF_REG),
- SILC_SERVER_CMD(list, LIST, SILC_CF_LAG | SILC_CF_REG),
+ SILC_SERVER_CMD(nick, NICK, SILC_CF_LAG_STRICT | SILC_CF_REG),
+ SILC_SERVER_CMD(list, LIST, SILC_CF_LAG_STRICT | SILC_CF_REG),
SILC_SERVER_CMD(topic, TOPIC, SILC_CF_LAG | SILC_CF_REG),
SILC_SERVER_CMD(invite, INVITE, SILC_CF_LAG | SILC_CF_REG),
SILC_SERVER_CMD(quit, QUIT, SILC_CF_LAG | SILC_CF_REG),
- SILC_SERVER_CMD(kill, KILL, SILC_CF_LAG | SILC_CF_REG | SILC_CF_OPER),
+ SILC_SERVER_CMD(kill, KILL, SILC_CF_LAG_STRICT | SILC_CF_REG | SILC_CF_OPER),
SILC_SERVER_CMD(info, INFO, SILC_CF_LAG | SILC_CF_REG),
- SILC_SERVER_CMD(connect, CONNECT,
- SILC_CF_LAG | SILC_CF_REG | SILC_CF_OPER),
+ SILC_SERVER_CMD(stats, STATS, SILC_CF_LAG | SILC_CF_REG),
SILC_SERVER_CMD(ping, PING, SILC_CF_LAG | SILC_CF_REG),
SILC_SERVER_CMD(oper, OPER, SILC_CF_LAG | SILC_CF_REG | SILC_CF_OPER),
- SILC_SERVER_CMD(join, JOIN, SILC_CF_LAG | SILC_CF_REG),
+ SILC_SERVER_CMD(join, JOIN, SILC_CF_LAG_STRICT | SILC_CF_REG),
SILC_SERVER_CMD(motd, MOTD, SILC_CF_LAG | SILC_CF_REG),
SILC_SERVER_CMD(umode, UMODE, SILC_CF_LAG | SILC_CF_REG),
- SILC_SERVER_CMD(cmode, CMODE, SILC_CF_LAG | SILC_CF_REG),
+ SILC_SERVER_CMD(cmode, CMODE, SILC_CF_LAG_STRICT | SILC_CF_REG),
SILC_SERVER_CMD(cumode, CUMODE, SILC_CF_LAG | SILC_CF_REG),
- SILC_SERVER_CMD(kick, KICK, SILC_CF_LAG | SILC_CF_REG),
- SILC_SERVER_CMD(restart, RESTART,
- SILC_CF_LAG | SILC_CF_REG | SILC_CF_OPER),
- SILC_SERVER_CMD(close, CLOSE,
- SILC_CF_LAG | SILC_CF_REG | SILC_CF_OPER),
- SILC_SERVER_CMD(die, DIE, SILC_CF_LAG | SILC_CF_REG | SILC_CF_OPER),
+ SILC_SERVER_CMD(kick, KICK, SILC_CF_LAG_STRICT | SILC_CF_REG),
+ SILC_SERVER_CMD(ban, BAN, SILC_CF_LAG_STRICT | SILC_CF_REG),
+ SILC_SERVER_CMD(detach, DETACH, SILC_CF_LAG_STRICT | SILC_CF_REG),
+ SILC_SERVER_CMD(watch, WATCH, SILC_CF_LAG | SILC_CF_REG),
SILC_SERVER_CMD(silcoper, SILCOPER,
SILC_CF_LAG | SILC_CF_REG | SILC_CF_SILC_OPER),
- SILC_SERVER_CMD(leave, LEAVE, SILC_CF_LAG | SILC_CF_REG),
+ SILC_SERVER_CMD(leave, LEAVE, SILC_CF_LAG_STRICT | SILC_CF_REG),
SILC_SERVER_CMD(users, USERS, SILC_CF_LAG | SILC_CF_REG),
+ SILC_SERVER_CMD(getkey, GETKEY, SILC_CF_LAG | SILC_CF_REG),
+ SILC_SERVER_CMD(service, SERVICE, SILC_CF_LAG_STRICT | SILC_CF_REG),
+
+ SILC_SERVER_CMD(connect, PRIV_CONNECT,
+ SILC_CF_LAG | SILC_CF_REG | SILC_CF_OPER),
+ SILC_SERVER_CMD(close, PRIV_CLOSE,
+ SILC_CF_LAG | SILC_CF_REG | SILC_CF_OPER),
+ SILC_SERVER_CMD(shutdown, PRIV_SHUTDOWN, SILC_CF_LAG | SILC_CF_REG |
+ SILC_CF_OPER),
{ NULL, 0 },
};
-#define SILC_SERVER_COMMAND_CHECK_ARGC(command, context, min, max) \
-do { \
- unsigned int _argc = silc_argument_get_arg_num(cmd->args); \
- \
- SILC_LOG_DEBUG(("Start")); \
- \
- if (_argc < min) { \
- silc_server_command_send_status_reply(cmd, command, \
- SILC_STATUS_ERR_NOT_ENOUGH_PARAMS); \
- silc_server_command_free(cmd); \
- return; \
- } \
- if (_argc > max) { \
- silc_server_command_send_status_reply(cmd, command, \
- SILC_STATUS_ERR_TOO_MANY_PARAMS); \
- silc_server_command_free(cmd); \
- return; \
- } \
+/* Performs several checks to the command. It first checks whether this
+ command was called as pending command callback. If it was then it checks
+ whether error occurred in the command reply where the pending command
+ callback was called.
+
+ It also checks that the requested command includes correct amount
+ of arguments. */
+#define SILC_SERVER_COMMAND_CHECK(command, context, min, max) \
+do { \
+ SilcUInt32 _argc; \
+ \
+ if (silc_server_command_pending_error_check(cmd, context2, command)) { \
+ SILC_LOG_DEBUG(("Error occurred in command reply, command not called")); \
+ silc_server_command_free(cmd); \
+ return; \
+ } \
+ \
+ _argc = silc_argument_get_arg_num(cmd->args); \
+ if (_argc < min) { \
+ SILC_LOG_DEBUG(("Not enough parameters in command")); \
+ silc_server_command_send_status_reply(cmd, command, \
+ SILC_STATUS_ERR_NOT_ENOUGH_PARAMS, \
+ 0); \
+ silc_server_command_free(cmd); \
+ return; \
+ } \
+ if (_argc > max) { \
+ SILC_LOG_DEBUG(("Too many parameters in command")); \
+ silc_server_command_send_status_reply(cmd, command, \
+ SILC_STATUS_ERR_TOO_MANY_PARAMS, \
+ 0); \
+ silc_server_command_free(cmd); \
+ return; \
+ } \
} while(0)
/* Returns TRUE if the connection is registered. Unregistered connections
usually cannot send commands hence the check. */
static int silc_server_is_registered(SilcServer server,
- SilcSocketConnection sock,
+ SilcPacketStream sock,
SilcServerCommandContext cmd,
SilcCommand command)
{
- SilcIDListData idata = (SilcIDListData)sock->user_data;
- if (idata->registered)
+ SilcIDListData idata = silc_packet_get_context(sock);
+
+ if (!idata)
+ return FALSE;
+
+ if (idata->status & SILC_IDLIST_STATUS_REGISTERED)
return TRUE;
silc_server_command_send_status_reply(cmd, command,
- SILC_STATUS_ERR_NOT_REGISTERED);
- silc_server_command_free(cmd);
+ SILC_STATUS_ERR_NOT_REGISTERED, 0);
return FALSE;
}
+/* Internal context to hold data when executed command with timeout. */
+typedef struct {
+ SilcServerCommandContext ctx;
+ SilcServerCommand *cmd;
+} *SilcServerCommandTimeout;
+
+/* Timeout callback to process commands with timeout for client. Client's
+ commands are always executed with timeout. */
+
+SILC_TASK_CALLBACK(silc_server_command_process_timeout)
+{
+ SilcServerCommandTimeout timeout = (SilcServerCommandTimeout)context;
+ SilcClientEntry client = silc_packet_get_context(timeout->ctx->sock);
+
+ if (!client) {
+ SILC_LOG_DEBUG(("Client entry is invalid"));
+ silc_server_command_free(timeout->ctx);
+ silc_free(timeout);
+ return;
+ }
+
+ /* Update access time */
+ client->last_command = time(NULL);
+
+ if (!(timeout->cmd->flags & SILC_CF_REG)) {
+ SILC_LOG_DEBUG(("Calling %s command",
+ silc_get_command_name(timeout->cmd->cmd)));
+ timeout->cmd->cb(timeout->ctx, NULL);
+ } else if (silc_server_is_registered(timeout->ctx->server,
+ timeout->ctx->sock,
+ timeout->ctx,
+ timeout->cmd->cmd)) {
+ SILC_LOG_DEBUG(("Calling %s command",
+ silc_get_command_name(timeout->cmd->cmd)));
+ timeout->cmd->cb(timeout->ctx, NULL);
+ } else {
+ SILC_LOG_DEBUG(("Client is not registered"));
+ silc_server_command_free(timeout->ctx);
+ }
+
+ silc_free(timeout);
+}
+
/* Processes received command packet. */
void silc_server_command_process(SilcServer server,
- SilcSocketConnection sock,
- SilcPacketContext *packet)
+ SilcPacketStream sock,
+ SilcPacket packet)
{
+ SilcIDListData idata = silc_packet_get_context(sock);
SilcServerCommandContext ctx;
SilcServerCommand *cmd;
+ SilcCommand command;
-#if 0
- /* XXX allow commands in but do not execute them more than once per
- two seconds. */
-
- /* Check whether it is allowed for this connection to execute any
- command. */
- if (sock->type == SILC_SOCKET_TYPE_CLIENT) {
- time_t curtime;
- SilcClientEntry client = (SilcClientEntry)sock->user_data;
-
- if (!client)
- return;
-
- /* Allow only one command executed in 2 seconds. */
- curtime = time(NULL);
- if (client->last_command && (curtime - client->last_command) < 2)
- return;
+ if (!idata)
+ return;
- /* Update access time */
- client->last_command = curtime;
- }
-#endif
-
/* Allocate command context. This must be free'd by the
command routine receiving it. */
- ctx = silc_calloc(1, sizeof(*ctx));
+ ctx = silc_server_command_alloc();
ctx->server = server;
ctx->sock = sock;
- ctx->packet = silc_packet_context_dup(packet); /* Save original packet */
-
+ ctx->packet = packet; /* Save original packet */
+ silc_packet_stream_ref(sock);
+
/* Parse the command payload in the packet */
- ctx->payload = silc_command_payload_parse(packet->buffer);
+ ctx->payload = silc_command_payload_parse(packet->buffer.data,
+ silc_buffer_len(&packet->buffer));
if (!ctx->payload) {
- SILC_LOG_ERROR(("Bad command payload, packet dropped"));
- silc_buffer_free(packet->buffer);
- silc_packet_context_free(packet);
+ SILC_LOG_ERROR(("Bad command payload"));
+ silc_packet_free(packet);
+ silc_packet_stream_unref(ctx->sock);
silc_free(ctx);
return;
}
ctx->args = silc_command_get_args(ctx->payload);
-
- /* Execute command. If this fails the packet is dropped. */
+
+ /* Get the command */
+ command = silc_command_get(ctx->payload);
for (cmd = silc_command_list; cmd->cb; cmd++)
- if (cmd->cmd == silc_command_get(ctx->payload)) {
+ if (cmd->cmd == command)
+ break;
- if (!(cmd->flags & SILC_CF_REG)) {
- cmd->cb(ctx);
- break;
- }
-
- if (silc_server_is_registered(server, sock, ctx, cmd->cmd)) {
- cmd->cb(ctx);
- break;
- }
+ if (!cmd || !cmd->cb) {
+ SILC_LOG_DEBUG(("Unknown command %d", command));
+ silc_server_command_send_status_reply(ctx, command,
+ SILC_STATUS_ERR_UNKNOWN_COMMAND, 0);
+ silc_packet_free(packet);
+ silc_packet_stream_unref(ctx->sock);
+ silc_free(ctx);
+ return;
+ }
+
+ /* Execute client's commands always with timeout. Normally they are
+ executed with zero (0) timeout but if client is sending command more
+ frequently than once in 2 seconds, then the timeout may be 0 to 2
+ seconds. */
+ if (idata->conn_type == SILC_CONN_CLIENT) {
+ SilcClientEntry client = silc_packet_get_context(sock);
+ SilcServerCommandTimeout timeout;
+ int fast;
+
+ timeout = silc_calloc(1, sizeof(*timeout));
+ timeout->ctx = ctx;
+ timeout->cmd = cmd;
+
+ if (client->last_command && (time(NULL) - client->last_command) < 2) {
+ client->fast_command++;
+ fast = FALSE;
+ } else {
+ if (client->fast_command - 2 <= 0)
+ client->fast_command = 0;
+ else
+ client->fast_command -= 2;
+ fast = TRUE;
}
- if (cmd == NULL) {
- SILC_LOG_ERROR(("Unknown command, packet dropped"));
- silc_server_command_free(ctx);
+ if (!fast && ((cmd->flags & SILC_CF_LAG_STRICT) ||
+ (client->fast_command > 5 && cmd->flags & SILC_CF_LAG)))
+ silc_schedule_task_add_timeout(
+ server->schedule,
+ silc_server_command_process_timeout, timeout,
+ (client->fast_command < 3 ? 0 :
+ 2 - (time(NULL) - client->last_command)),
+ (client->fast_command < 3 ? 200000 : 0));
+ else
+ silc_schedule_task_add_timeout(server->schedule,
+ silc_server_command_process_timeout,
+ timeout, 0, 0);
return;
}
+
+ /* Execute for server */
+
+ if (!(cmd->flags & SILC_CF_REG)) {
+ SILC_LOG_DEBUG(("Calling %s command", silc_get_command_name(cmd->cmd)));
+ cmd->cb(ctx, NULL);
+ } else if (silc_server_is_registered(server, sock, ctx, cmd->cmd)) {
+ SILC_LOG_DEBUG(("Calling %s command", silc_get_command_name(cmd->cmd)));
+ cmd->cb(ctx, NULL);
+ } else {
+ SILC_LOG_DEBUG(("Server is not registered"));
+ silc_server_command_free(ctx);
+ }
+}
+
+/* Allocate Command Context */
+
+SilcServerCommandContext silc_server_command_alloc()
+{
+ SilcServerCommandContext ctx = silc_calloc(1, sizeof(*ctx));
+ ctx->users++;
+ return ctx;
+}
+
+/* Free's the command context allocated before executing the command */
+
+void silc_server_command_free(SilcServerCommandContext ctx)
+{
+ ctx->users--;
+ SILC_LOG_DEBUG(("Command context %p refcnt %d->%d", ctx, ctx->users + 1,
+ ctx->users));
+ if (ctx->users < 1) {
+ if (ctx->payload)
+ silc_command_payload_free(ctx->payload);
+ if (ctx->packet)
+ silc_packet_free(ctx->packet);
+ if (ctx->sock)
+ silc_packet_stream_unref(ctx->sock);
+ silc_free(ctx);
+ }
+}
+
+/* Duplicate Command Context by adding reference counter. The context won't
+ be free'd untill it hits zero. */
+
+SilcServerCommandContext
+silc_server_command_dup(SilcServerCommandContext ctx)
+{
+ ctx->users++;
+ SILC_LOG_DEBUG(("Command context %p refcnt %d->%d", ctx, ctx->users - 1,
+ ctx->users));
+ return ctx;
+}
+
+/* Timeout for pending command. If reply to pending command never arrives
+ this is called to free resources. */
+
+SILC_TASK_CALLBACK(silc_server_command_pending_timeout)
+{
+ SilcServer server = app_context;
+ SilcServerCommandPending *reply = context;
+ SilcServerCommandReplyContext cmdr;
+ SilcBuffer tmpreply;
+ int i;
+
+ SILC_LOG_DEBUG(("Timeout pending command"));
+
+ /* Allocate temporary and bogus command reply context */
+ cmdr = silc_calloc(1, sizeof(*cmdr));
+ cmdr->server = server;
+ cmdr->ident = reply->ident;
+
+ /* Check for pending commands and mark to be exeucted */
+ cmdr->callbacks =
+ silc_server_command_pending_check(server, reply->reply_cmd,
+ reply->ident, &cmdr->callbacks_count);
+
+ /* Create bogus command reply with an error inside */
+ tmpreply =
+ silc_command_reply_payload_encode_va(reply->reply_cmd ? reply->reply_cmd :
+ SILC_COMMAND_RESERVED,
+ SILC_STATUS_ERR_TIMEDOUT, 0,
+ reply->ident, 0);
+ cmdr->payload = silc_command_payload_parse(tmpreply->data,
+ silc_buffer_len(tmpreply));
+ silc_buffer_free(tmpreply);
+
+ /* Call all callbacks. Same as SILC_SERVER_PENDING_EXEC macro. */
+ for (i = 0; i < cmdr->callbacks_count; i++)
+ if (cmdr->callbacks[i].callback)
+ (*cmdr->callbacks[i].callback)(cmdr->callbacks[i].context, cmdr);
+
+ silc_server_command_pending_del(server, reply->reply_cmd, reply->ident);
+ silc_server_command_reply_free(cmdr);
}
/* Add new pending command to be executed when reply to a command has been
received. The `reply_cmd' is the command that will call the `callback'
- with `context' when reply has been received. If `ident' is non-zero
+ with `context' when reply has been received. It can be SILC_COMMAND_NONE
+ to match any command with the `ident'. If `ident' is non-zero
the `callback' will be executed when received reply with command
- identifier `ident'. */
+ identifier `ident'. If there already exists pending command for the
+ specified command, ident, callback and context this function has no
+ effect. */
-void silc_server_command_pending(SilcServer server,
+SilcBool silc_server_command_pending(SilcServer server,
SilcCommand reply_cmd,
- unsigned short ident,
+ SilcUInt16 ident,
SilcCommandCb callback,
void *context)
+{
+ return silc_server_command_pending_timed(server, reply_cmd, ident, callback,
+ context, 0);
+}
+
+/* Same as silc_server_command_pending with specific timeout for pending
+ commands. If the `timeout' is zero default timeout is used. */
+
+SilcBool silc_server_command_pending_timed(SilcServer server,
+ SilcCommand reply_cmd,
+ SilcUInt16 ident,
+ SilcCommandCb callback,
+ void *context,
+ SilcUInt16 timeout)
{
SilcServerCommandPending *reply;
+ /* Check whether identical pending already exists for same command,
+ ident, callback and callback context. If it does then it would be
+ error to register it again. */
+ silc_dlist_start(server->pending_commands);
+ while ((reply = silc_dlist_get(server->pending_commands)) != SILC_LIST_END) {
+ if (reply->reply_cmd == reply_cmd && reply->ident == ident &&
+ reply->callback == callback && reply->context == context)
+ return FALSE;
+ }
+
reply = silc_calloc(1, sizeof(*reply));
reply->reply_cmd = reply_cmd;
reply->ident = ident;
reply->context = context;
reply->callback = callback;
+ reply->timeout =
+ silc_schedule_task_add_timeout(server->schedule,
+ silc_server_command_pending_timeout, reply,
+ timeout ? timeout : 12, 0);
silc_dlist_add(server->pending_commands, reply);
+
+ return TRUE;
}
/* Deletes pending command by reply command type. */
void silc_server_command_pending_del(SilcServer server,
SilcCommand reply_cmd,
- unsigned short ident)
+ SilcUInt16 ident)
{
SilcServerCommandPending *r;
silc_dlist_start(server->pending_commands);
while ((r = silc_dlist_get(server->pending_commands)) != SILC_LIST_END) {
- if (r->reply_cmd == reply_cmd && r->ident == ident) {
+ if ((r->reply_cmd == reply_cmd || (r->reply_cmd == SILC_COMMAND_NONE &&
+ r->reply_check))
+ && r->ident == ident) {
silc_dlist_del(server->pending_commands, r);
- break;
+ if (r->timeout)
+ silc_schedule_task_del(server->schedule, r->timeout);
+ silc_free(r);
}
}
}
/* Checks for pending commands and marks callbacks to be called from
the command reply function. Returns TRUE if there were pending command. */
-int silc_server_command_pending_check(SilcServer server,
- SilcServerCommandReplyContext ctx,
- SilcCommand command,
- unsigned short ident)
+SilcServerCommandPendingCallbacks
+silc_server_command_pending_check(SilcServer server,
+ SilcCommand command,
+ SilcUInt16 ident,
+ SilcUInt32 *callbacks_count)
{
SilcServerCommandPending *r;
+ SilcServerCommandPendingCallbacks callbacks = NULL;
+ int i = 0;
silc_dlist_start(server->pending_commands);
while ((r = silc_dlist_get(server->pending_commands)) != SILC_LIST_END) {
- if (r->reply_cmd == command && r->ident == ident) {
- ctx->context = r->context;
- ctx->callback = r->callback;
- ctx->ident = ident;
- return TRUE;
+ if ((r->reply_cmd == command || r->reply_cmd == SILC_COMMAND_NONE)
+ && r->ident == ident) {
+ callbacks = silc_realloc(callbacks, sizeof(*callbacks) * (i + 1));
+ callbacks[i].context = r->context;
+ callbacks[i].callback = r->callback;
+ r->reply_check = TRUE;
+ i++;
}
}
- return FALSE;
-}
-
-/* Free's the command context allocated before executing the command */
-
-static void silc_server_command_free(SilcServerCommandContext cmd)
-{
- if (cmd) {
- if (cmd->payload)
- silc_command_free_payload(cmd->payload);
- if (cmd->packet)
- silc_packet_context_free(cmd->packet);
- silc_free(cmd);
- }
+ *callbacks_count = i;
+ return callbacks;
}
/* Sends simple status message as command reply packet */
-static void
+static void
silc_server_command_send_status_reply(SilcServerCommandContext cmd,
SilcCommand command,
- SilcCommandStatus status)
+ SilcStatus status,
+ SilcStatus error)
{
SilcBuffer buffer;
+ /* Statistics */
+ cmd->server->stat.commands_sent++;
+
SILC_LOG_DEBUG(("Sending command status %d", status));
- buffer = silc_command_reply_payload_encode_va(command, status, 0, 0);
+ buffer =
+ silc_command_reply_payload_encode_va(command, status, error,
+ silc_command_get_ident(cmd->payload),
+ 0);
silc_server_packet_send(cmd->server, cmd->sock,
- SILC_PACKET_COMMAND_REPLY, 0,
- buffer->data, buffer->len, FALSE);
+ SILC_PACKET_COMMAND_REPLY, 0,
+ buffer->data, silc_buffer_len(buffer));
silc_buffer_free(buffer);
}
/* Sends command status reply with one extra argument. The argument
type must be sent as argument. */
-static void
+static void
silc_server_command_send_status_data(SilcServerCommandContext cmd,
SilcCommand command,
- SilcCommandStatus status,
- unsigned int arg_type,
- unsigned char *arg,
- unsigned int arg_len)
+ SilcStatus status,
+ SilcStatus error,
+ SilcUInt32 arg_type,
+ const unsigned char *arg,
+ SilcUInt32 arg_len)
{
SilcBuffer buffer;
+ /* Statistics */
+ cmd->server->stat.commands_sent++;
+
SILC_LOG_DEBUG(("Sending command status %d", status));
- buffer = silc_command_reply_payload_encode_va(command, status, 0, 1,
- arg_type, arg, arg_len);
+ buffer =
+ silc_command_reply_payload_encode_va(command, status, 0,
+ silc_command_get_ident(cmd->payload),
+ 1, arg_type, arg, arg_len);
silc_server_packet_send(cmd->server, cmd->sock,
- SILC_PACKET_COMMAND_REPLY, 0,
- buffer->data, buffer->len, FALSE);
+ SILC_PACKET_COMMAND_REPLY, 0,
+ buffer->data, silc_buffer_len(buffer));
silc_buffer_free(buffer);
}
-/******************************************************************************
+static void
+silc_server_command_send_status_data2(SilcServerCommandContext cmd,
+ SilcCommand command,
+ SilcStatus status,
+ SilcStatus error,
+ SilcUInt32 arg_type1,
+ const unsigned char *arg1,
+ SilcUInt32 arg_len1,
+ SilcUInt32 arg_type2,
+ const unsigned char *arg2,
+ SilcUInt32 arg_len2)
+{
+ SilcBuffer buffer;
- WHOIS Functions
+ /* Statistics */
+ cmd->server->stat.commands_sent++;
-******************************************************************************/
+ SILC_LOG_DEBUG(("Sending command status %d", status));
-static int
-silc_server_command_whois_parse(SilcServerCommandContext cmd,
- SilcClientID ***client_id,
- unsigned int *client_id_count,
- char **nickname,
- char **server_name,
- int *count,
- SilcCommand command)
-{
- unsigned char *tmp;
- unsigned int len;
- unsigned int argc = silc_argument_get_arg_num(cmd->args);
- int i, k;
+ buffer =
+ silc_command_reply_payload_encode_va(command, status, 0,
+ silc_command_get_ident(cmd->payload),
+ 2, arg_type1, arg1, arg_len1,
+ arg_type2, arg2, arg_len2);
+ silc_server_packet_send(cmd->server, cmd->sock,
+ SILC_PACKET_COMMAND_REPLY, 0,
+ buffer->data, silc_buffer_len(buffer));
+ silc_buffer_free(buffer);
+}
- /* If client ID is in the command it must be used instead of nickname */
- tmp = silc_argument_get_arg_type(cmd->args, 3, &len);
- if (!tmp) {
- /* No ID, get the nickname@server string and parse it. */
- tmp = silc_argument_get_arg_type(cmd->args, 1, NULL);
- if (tmp) {
- if (strchr(tmp, '@')) {
- len = strcspn(tmp, "@");
- *nickname = silc_calloc(len + 1, sizeof(char));
- memcpy(*nickname, tmp, len);
- *server_name = silc_calloc(strlen(tmp) - len, sizeof(char));
- memcpy(*server_name, tmp + len + 1, strlen(tmp) - len - 1);
- } else {
- *nickname = strdup(tmp);
- }
- } else {
- silc_server_command_send_status_reply(cmd, command,
- SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
- return FALSE;
- }
- } else {
- /* Command includes ID, we must use that. Also check whether the command
- has more than one ID set - take them all. */
-
- *client_id = silc_calloc(1, sizeof(**client_id));
- (*client_id)[0] = silc_id_payload_parse_id(tmp, len);
- *client_id_count = 1;
-
- /* Take all ID's from the command packet */
- if (argc > 3) {
- for (k = 1, i = 4; i < argc; i++) {
- tmp = silc_argument_get_arg_type(cmd->args, i, &len);
- if (tmp) {
- *client_id = silc_realloc(*client_id, sizeof(**client_id) *
- (*client_id_count + 1));
- (*client_id)[k++] = silc_id_payload_parse_id(tmp, len);
- (*client_id_count)++;
- }
- }
- }
+/* This function can be called to check whether in the command reply
+ an error occurred. This function has no effect if this is called
+ when the command function was not called as pending command callback.
+ This returns TRUE if error had occurred. */
+
+static bool
+silc_server_command_pending_error_check(SilcServerCommandContext cmd,
+ SilcServerCommandReplyContext cmdr,
+ SilcCommand command)
+{
+ if (!cmd->pending || !cmdr)
+ return FALSE;
- /* Command includes ID, use that */
+ if (!silc_command_get_status(cmdr->payload, NULL, NULL)) {
+ SilcBuffer buffer;
+
+ /* Statistics */
+ cmd->server->stat.commands_sent++;
+
+ /* Send the same command reply payload */
+ silc_command_set_command(cmdr->payload, silc_command_get(cmd->payload));
+ silc_command_set_ident(cmdr->payload,
+ silc_command_get_ident(cmd->payload));
+ buffer = silc_command_payload_encode_payload(cmdr->payload);
+ silc_server_packet_send(cmd->server, cmd->sock,
+ SILC_PACKET_COMMAND_REPLY, 0,
+ buffer->data, silc_buffer_len(buffer));
+ silc_buffer_free(buffer);
+ return TRUE;
}
- /* Get the max count of reply messages allowed */
- tmp = silc_argument_get_arg_type(cmd->args, 2, NULL);
- if (tmp)
- *count = atoi(tmp);
- else
- *count = 0;
+ return FALSE;
+}
- return TRUE;
+/* Server side of command WHOIS. */
+
+SILC_SERVER_CMD_FUNC(whois)
+{
+ SilcServerCommandContext cmd = (SilcServerCommandContext)context;
+ SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_WHOIS, cmd, 1, 256);
+ silc_server_query_command(cmd->server, SILC_COMMAND_WHOIS, cmd, NULL);
+ silc_server_command_free(cmd);
+}
+
+/* Server side of command WHOWAS. */
+
+SILC_SERVER_CMD_FUNC(whowas)
+{
+ SilcServerCommandContext cmd = (SilcServerCommandContext)context;
+ SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_WHOWAS, cmd, 1, 2);
+ silc_server_query_command(cmd->server, SILC_COMMAND_WHOWAS, cmd, NULL);
+ silc_server_command_free(cmd);
+}
+
+/* Server side of command IDENTIFY. */
+
+SILC_SERVER_CMD_FUNC(identify)
+{
+ SilcServerCommandContext cmd = (SilcServerCommandContext)context;
+ SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_IDENTIFY, cmd, 1, 256);
+ silc_server_query_command(cmd->server, SILC_COMMAND_IDENTIFY, cmd, NULL);
+ silc_server_command_free(cmd);
}
-static char
-silc_server_command_whois_check(SilcServerCommandContext cmd,
- SilcClientEntry *clients,
- unsigned int clients_count)
+/* Server side of command NICK. Sets nickname for user. Setting
+ nickname causes generation of a new client ID for the client. The
+ new client ID is sent to the client after changing the nickname. */
+
+SILC_SERVER_CMD_FUNC(nick)
{
+ SilcServerCommandContext cmd = (SilcServerCommandContext)context;
+ SilcClientEntry client = silc_packet_get_context(cmd->sock);
SilcServer server = cmd->server;
- int i;
- SilcClientEntry entry;
+ SilcBuffer nidp, oidp = NULL;
+ SilcClientID *new_id;
+ SilcUInt32 nick_len;
+ unsigned char *nick, *nickc = NULL;
+ SilcUInt16 ident = silc_command_get_ident(cmd->payload);
- for (i = 0; i < clients_count; i++) {
- entry = clients[i];
+ if (client->data.conn_type != SILC_CONN_CLIENT || !client)
+ goto out;
- if (!entry->nickname || !entry->username || !entry->userinfo) {
- SilcBuffer tmpbuf;
- unsigned short old_ident;
+ SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_NICK, cmd, 1, 1);
- if (!entry->router)
- continue;
-
- old_ident = silc_command_get_ident(cmd->payload);
- silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
- tmpbuf = silc_command_payload_encode_payload(cmd->payload);
+ /* Get nickname */
+ nick = silc_argument_get_arg_type(cmd->args, 1, &nick_len);
+ if (!nick) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_NICK,
+ SILC_STATUS_ERR_BAD_NICKNAME, 0);
+ goto out;
+ }
- /* Send WHOIS command */
- silc_server_packet_send(server, entry->router->connection,
- SILC_PACKET_COMMAND, cmd->packet->flags,
- tmpbuf->data, tmpbuf->len, TRUE);
-
- /* Reprocess this packet after received reply */
- silc_server_command_pending(server, SILC_COMMAND_WHOIS,
- silc_command_get_ident(cmd->payload),
- silc_server_command_whois, (void *)cmd);
- cmd->pending = TRUE;
-
- silc_command_set_ident(cmd->payload, old_ident);
+ /* Truncate over long nicks */
+ if (nick_len > 128) {
+ nick_len = 128;
+ nick[nick_len - 1] = '\0';
+ }
- silc_buffer_free(tmpbuf);
- return FALSE;
- }
+ /* Check for valid nickname string. This is cached, original is saved
+ in the client context. */
+ nickc = silc_identifier_check(nick, nick_len, SILC_STRING_UTF8, 128, NULL);
+ if (!nickc) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_NICK,
+ SILC_STATUS_ERR_BAD_NICKNAME, 0);
+ goto out;
}
- return TRUE;
+ /* Check for same nickname */
+ if (strlen(client->nickname) == nick_len &&
+ !memcmp(client->nickname, nick, nick_len)) {
+ nidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
+ silc_free(nickc);
+ goto send_reply;
+ }
+
+ /* Create new Client ID */
+ if (!silc_id_create_client_id(cmd->server, cmd->server->id,
+ cmd->server->rng,
+ cmd->server->md5hash,
+ nickc, strlen(nickc), &new_id)) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_NICK,
+ SILC_STATUS_ERR_BAD_NICKNAME, 0);
+ silc_free(nickc);
+ goto out;
+ }
+
+ /* Send notify about nickname change to our router. We send the new
+ ID and ask to replace it with the old one. If we are router the
+ packet is broadcasted. Send NICK_CHANGE notify. */
+ silc_server_send_notify_nick_change(server, SILC_PRIMARY_ROUTE(server),
+ SILC_BROADCAST(server), client->id,
+ new_id, nick);
+
+ /* Check if anyone is watching the old nickname */
+ if (server->server_type == SILC_ROUTER)
+ silc_server_check_watcher_list(server, client, nick,
+ SILC_NOTIFY_TYPE_NICK_CHANGE);
+
+ oidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
+
+ /* Update client entry */
+ silc_idcache_update_by_context(server->local_list->clients, client,
+ new_id, nickc, TRUE);
+ silc_free(new_id);
+ silc_free(client->nickname);
+ client->nickname = strdup(nick);
+
+ nidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
+
+ /* Send NICK_CHANGE notify to the client's channels */
+ silc_server_send_notify_on_channels(server, NULL, client,
+ SILC_NOTIFY_TYPE_NICK_CHANGE, 3,
+ oidp->data, silc_buffer_len(oidp),
+ nidp->data, silc_buffer_len(nidp),
+ client->nickname,
+ strlen(client->nickname));
+
+ /* Check if anyone is watching the new nickname */
+ if (server->server_type == SILC_ROUTER)
+ silc_server_check_watcher_list(server, client, NULL,
+ SILC_NOTIFY_TYPE_NICK_CHANGE);
+
+ send_reply:
+ /* Send the new Client ID as reply command back to client */
+ silc_server_send_command_reply(cmd->server, cmd->sock,
+ SILC_COMMAND_NICK,
+ SILC_STATUS_OK, 0, ident, 2,
+ 2, nidp->data, silc_buffer_len(nidp),
+ 3, nick, nick_len);
+ silc_buffer_free(nidp);
+ if (oidp)
+ silc_buffer_free(oidp);
+
+ out:
+ silc_server_command_free(cmd);
}
+/* Sends the LIST command reply */
+
static void
-silc_server_command_whois_send_reply(SilcServerCommandContext cmd,
- SilcClientEntry *clients,
- unsigned int clients_count)
+silc_server_command_list_send_reply(SilcServerCommandContext cmd,
+ SilcChannelEntry *lch,
+ SilcUInt32 lch_count,
+ SilcChannelEntry *gch,
+ SilcUInt32 gch_count)
{
- SilcServer server = cmd->server;
- char *tmp;
- int i, count = 0, len;
- SilcBuffer packet, idp;
- SilcClientEntry entry;
- SilcCommandStatus status;
- unsigned short ident = silc_command_get_ident(cmd->payload);
+ int i, k;
+ SilcBuffer idp;
+ SilcChannelEntry entry;
+ SilcStatus status;
+ SilcUInt16 ident = silc_command_get_ident(cmd->payload);
+ char *topic;
+ unsigned char usercount[4];
+ SilcUInt32 users;
+ int valid_lcount = 0, valid_rcount = 0;
+
+ for (i = 0; i < lch_count; i++) {
+ if (lch[i]->mode & SILC_CHANNEL_MODE_SECRET)
+ lch[i] = NULL;
+ else
+ valid_lcount++;
+ }
+ for (i = 0; i < gch_count; i++) {
+ if (gch[i]->mode & SILC_CHANNEL_MODE_SECRET)
+ gch[i] = NULL;
+ else
+ valid_rcount++;
+ }
+
+ if (!lch_count && !gch_count) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_LIST,
+ SILC_STATUS_OK, 0);
+ return;
+ }
status = SILC_STATUS_OK;
- if (clients_count > 1)
+ if ((lch_count + gch_count) > 1)
status = SILC_STATUS_LIST_START;
- for (i = 0; i < clients_count; i++) {
- entry = clients[i];
+ /* Local list */
+ for (i = 0, k = 0; i < lch_count; i++) {
+ entry = lch[i];
+ if (!entry)
+ continue;
- if (count && i - 1 == count)
- break;
-
- if (clients_count > 2)
+ if (k >= 1)
status = SILC_STATUS_LIST_ITEM;
+ if (valid_lcount > 1 && k == valid_lcount - 1 && !valid_rcount)
+ status = SILC_STATUS_LIST_END;
+
+ idp = silc_id_payload_encode(entry->id, SILC_ID_CHANNEL);
+
+ if (entry->mode & SILC_CHANNEL_MODE_PRIVATE) {
+ topic = "*private*";
+ memset(usercount, 0, sizeof(usercount));
+ } else {
+ topic = entry->topic;
+ users = silc_hash_table_count(entry->user_list);
+ SILC_PUT32_MSB(users, usercount);
+ }
+
+ /* Send the reply */
+ silc_server_send_command_reply(cmd->server, cmd->sock, SILC_COMMAND_LIST,
+ status, 0, ident, 4,
+ 2, idp->data, silc_buffer_len(idp),
+ 3, entry->channel_name,
+ strlen(entry->channel_name),
+ 4, topic, topic ? strlen(topic) : 0,
+ 5, usercount, 4);
+ silc_buffer_free(idp);
+ k++;
+ }
- if (clients_count > 1 && i == clients_count - 1)
+ /* Global list */
+ for (i = 0, k = 0; i < gch_count; i++) {
+ entry = gch[i];
+ if (!entry)
+ continue;
+
+ if (k >= 1)
+ status = SILC_STATUS_LIST_ITEM;
+ if (valid_rcount > 1 && k == valid_rcount - 1)
status = SILC_STATUS_LIST_END;
- /* Send WHOIS reply */
- idp = silc_id_payload_encode(entry->id, SILC_ID_CLIENT);
- tmp = silc_argument_get_first_arg(cmd->args, NULL);
-
- /* XXX */
- {
- char nh[256], uh[256];
- unsigned char idle[4];
- SilcSocketConnection hsock;
-
- memset(uh, 0, sizeof(uh));
- memset(nh, 0, sizeof(nh));
-
- strncat(nh, entry->nickname, strlen(entry->nickname));
- if (!strchr(entry->nickname, '@')) {
- strncat(nh, "@", 1);
- len = entry->router ? strlen(entry->router->server_name) :
- strlen(server->server_name);
- strncat(nh, entry->router ? entry->router->server_name :
- server->server_name, len);
- }
-
- strncat(uh, entry->username, strlen(entry->username));
- if (!strchr(entry->username, '@')) {
- strncat(uh, "@", 1);
- hsock = (SilcSocketConnection)entry->connection;
- len = strlen(hsock->hostname);
- strncat(uh, hsock->hostname, len);
- }
-
- SILC_PUT32_MSB((time(NULL) - entry->data.last_receive), idle);
-
- /* XXX */
- if (entry->userinfo)
- packet =
- silc_command_reply_payload_encode_va(SILC_COMMAND_WHOIS,
- status, ident, 5,
- 2, idp->data, idp->len,
- 3, nh, strlen(nh),
- 4, uh, strlen(uh),
- 5, entry->userinfo,
- strlen(entry->userinfo),
- 7, idle, 4);
- else
- packet =
- silc_command_reply_payload_encode_va(SILC_COMMAND_WHOIS,
- status, ident, 4,
- 2, idp->data, idp->len,
- 3, nh, strlen(nh),
- 4, uh, strlen(uh),
- 7, idle, 4);
- }
-
- silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY,
- 0, packet->data, packet->len, FALSE);
-
- silc_buffer_free(packet);
+ idp = silc_id_payload_encode(entry->id, SILC_ID_CHANNEL);
+
+ if (entry->mode & SILC_CHANNEL_MODE_PRIVATE) {
+ topic = "*private*";
+ memset(usercount, 0, sizeof(usercount));
+ } else {
+ topic = entry->topic;
+ users = entry->user_count;
+ SILC_PUT32_MSB(users, usercount);
+ }
+
+ /* Send the reply */
+ silc_server_send_command_reply(cmd->server, cmd->sock, SILC_COMMAND_LIST,
+ status, 0, ident, 4,
+ 2, idp->data, silc_buffer_len(idp),
+ 3, entry->channel_name,
+ strlen(entry->channel_name),
+ 4, topic, topic ? strlen(topic) : 0,
+ 5, usercount, 4);
silc_buffer_free(idp);
+ k++;
}
}
-static int
-silc_server_command_whois_from_client(SilcServerCommandContext cmd)
+/* Server side of LIST command. This lists the channel of the requested
+ server. Secret channels are not listed. */
+
+SILC_SERVER_CMD_FUNC(list)
{
+ SilcServerCommandContext cmd = (SilcServerCommandContext)context;
SilcServer server = cmd->server;
- char *nick = NULL, *server_name = NULL;
- int count = 0, clients_count = 0;
- SilcClientEntry *clients = NULL, entry;
- SilcClientID **client_id = NULL;
- unsigned int client_id_count = 0;
- int i, ret = 0;
-
- /* Protocol dictates that we must always send the received WHOIS request
- to our router if we are normal server, so let's do it now unless we
- are standalone. We will not send any replies to the client until we
- have received reply from the router. */
- if (server->server_type == SILC_SERVER &&
- !cmd->pending && !server->standalone) {
+ SilcID id;
+ SilcChannelID *channel_id = NULL;
+ SilcChannelEntry *lchannels = NULL, *gchannels = NULL;
+ SilcUInt32 lch_count = 0, gch_count = 0;
+
+ SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_LIST, cmd, 0, 1);
+
+ /* If we are normal server, send the command to router, since we
+ want to know all channels in the network. */
+ if (!cmd->pending && server->server_type != SILC_ROUTER &&
+ !server->standalone) {
SilcBuffer tmpbuf;
- unsigned short old_ident;
+ SilcUInt16 old_ident;
+
+ /* Statistics */
+ cmd->server->stat.commands_sent++;
old_ident = silc_command_get_ident(cmd->payload);
- silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
+ silc_command_set_ident(cmd->payload, ++server->cmd_ident);
tmpbuf = silc_command_payload_encode_payload(cmd->payload);
-
- /* Send WHOIS command to our router */
- silc_server_packet_send(server, (SilcSocketConnection)
- server->router->connection,
+ silc_server_packet_send(server, SILC_PRIMARY_ROUTE(server),
SILC_PACKET_COMMAND, cmd->packet->flags,
- tmpbuf->data, tmpbuf->len, TRUE);
+ tmpbuf->data, silc_buffer_len(tmpbuf));
/* Reprocess this packet after received reply from router */
- silc_server_command_pending(server, SILC_COMMAND_WHOIS,
+ silc_server_command_pending(server, SILC_COMMAND_LIST,
silc_command_get_ident(cmd->payload),
- silc_server_command_whois, (void *)cmd);
+ silc_server_command_list,
+ silc_server_command_dup(cmd));
cmd->pending = TRUE;
-
silc_command_set_ident(cmd->payload, old_ident);
-
silc_buffer_free(tmpbuf);
- ret = -1;
goto out;
}
- /* We are ready to process the command request. Let's search for the
- requested client and send reply to the requesting client. */
+ /* Get Channel ID */
+ if (silc_argument_get_decoded(cmd->args, 1, SILC_ARGUMENT_ID, &id, NULL))
+ channel_id = SILC_ID_GET_ID(id);
- /* Parse the whois request */
- if (!silc_server_command_whois_parse(cmd, &client_id, &client_id_count,
- &nick, &server_name, &count,
- SILC_COMMAND_WHOIS))
- return 0;
+ /* Get the channels from local list */
+ lchannels = silc_idlist_get_channels(server->local_list, channel_id,
+ &lch_count);
- /* Get all clients matching that ID or nickname from local list */
- if (client_id_count) {
- /* Check all Client ID's received in the command packet */
- for (i = 0; i < client_id_count; i++) {
- entry = silc_idlist_find_client_by_id(server->local_list,
- client_id[i], NULL);
- if (entry) {
- clients = silc_realloc(clients, sizeof(*clients) *
- (clients_count + 1));
- clients[clients_count++] = entry;
- }
- }
- } else {
- clients = silc_idlist_get_clients_by_nickname(server->local_list,
- nick, server_name,
- &clients_count);
- }
-
- /* Check global list as well */
- if (!clients) {
- if (client_id_count) {
- /* Check all Client ID's received in the command packet */
- for (i = 0; i < client_id_count; i++) {
- entry = silc_idlist_find_client_by_id(server->global_list,
- client_id[i], NULL);
- if (entry) {
- clients = silc_realloc(clients, sizeof(*clients) *
- (clients_count + 1));
- clients[clients_count++] = entry;
- }
- }
- } else {
- clients = silc_idlist_get_clients_by_nickname(server->global_list,
- nick, server_name,
- &clients_count);
- }
- }
-
- if (!clients) {
- /* Such client(s) really does not exist in the SILC network. */
- if (!client_id_count) {
- silc_server_command_send_status_data(cmd, SILC_COMMAND_WHOIS,
- SILC_STATUS_ERR_NO_SUCH_NICK,
- 3, nick, strlen(nick));
- } else {
- SilcBuffer idp = silc_id_payload_encode(client_id[0], SILC_ID_CLIENT);
- silc_server_command_send_status_data(cmd, SILC_COMMAND_WHOIS,
- SILC_STATUS_ERR_NO_SUCH_CLIENT_ID,
- 2, idp->data, idp->len);
- silc_buffer_free(idp);
- }
- goto out;
- }
+ /* Get the channels from global list */
+ gchannels = silc_idlist_get_channels(server->global_list, channel_id,
+ &gch_count);
- /* Router always finds the client entry if it exists in the SILC network.
- However, it might be incomplete entry and does not include all the
- mandatory fields that WHOIS command reply requires. Check for these and
- make query from the server who owns the client if some fields are
- missing. */
- if (server->server_type == SILC_ROUTER &&
- !silc_server_command_whois_check(cmd, clients, clients_count)) {
- ret = -1;
- goto out;
- }
+ /* Send the reply */
+ silc_server_command_list_send_reply(cmd, lchannels, lch_count,
+ gchannels, gch_count);
- /* Send the command reply to the client */
- silc_server_command_whois_send_reply(cmd, clients, clients_count);
+ silc_free(lchannels);
+ silc_free(gchannels);
out:
- if (client_id_count) {
- for (i = 0; i < client_id_count; i++)
- silc_free(client_id[i]);
- silc_free(client_id);
- }
- if (clients)
- silc_free(clients);
- if (nick)
- silc_free(nick);
- if (server_name)
- silc_free(server_name);
-
- return ret;
+ silc_server_command_free(cmd);
}
-static int
-silc_server_command_whois_from_server(SilcServerCommandContext cmd)
+/* Server side of TOPIC command. Sets topic for channel and/or returns
+ current topic to client. */
+
+SILC_SERVER_CMD_FUNC(topic)
{
+ SilcServerCommandContext cmd = (SilcServerCommandContext)context;
SilcServer server = cmd->server;
- char *nick = NULL, *server_name = NULL;
- int count = 0, clients_count = 0;
- SilcClientEntry *clients = NULL, entry;
- SilcClientID **client_id = NULL;
- unsigned int client_id_count = 0;
- int i, ret = 0;
-
- /* Parse the whois request */
- if (!silc_server_command_whois_parse(cmd, &client_id, &client_id_count,
- &nick, &server_name, &count,
- SILC_COMMAND_WHOIS))
- return 0;
-
- /* Process the command request. Let's search for the requested client and
- send reply to the requesting server. */
-
- if (client_id_count) {
- /* Check all Client ID's received in the command packet */
- for (i = 0; i < client_id_count; i++) {
- entry = silc_idlist_find_client_by_id(server->local_list,
- client_id[i], NULL);
- if (entry) {
- clients = silc_realloc(clients, sizeof(*clients) *
- (clients_count + 1));
- clients[clients_count++] = entry;
- }
- }
- } else {
- clients = silc_idlist_get_clients_by_nickname(server->local_list,
- nick, server_name,
- &clients_count);
- if (!clients)
- clients = silc_idlist_get_clients_by_hash(server->local_list,
- nick, server->md5hash,
- &clients_count);
- }
-
- /* If we are router we will check our global list as well. */
- if (!clients && server->server_type == SILC_ROUTER) {
- if (client_id_count) {
- /* Check all Client ID's received in the command packet */
- for (i = 0; i < client_id_count; i++) {
- entry = silc_idlist_find_client_by_id(server->global_list,
- client_id[i], NULL);
- if (entry) {
- clients = silc_realloc(clients, sizeof(*clients) *
- (clients_count + 1));
- clients[clients_count++] = entry;
- }
- }
- } else {
- clients = silc_idlist_get_clients_by_nickname(server->global_list,
- nick, server_name,
- &clients_count);
- if (!clients)
- clients = silc_idlist_get_clients_by_hash(server->global_list,
- nick, server->md5hash,
- &clients_count);
- }
- }
-
- if (!clients) {
- /* Such a client really does not exist in the SILC network. */
- if (!client_id_count) {
- silc_server_command_send_status_data(cmd, SILC_COMMAND_WHOIS,
- SILC_STATUS_ERR_NO_SUCH_NICK,
- 3, nick, strlen(nick));
- } else {
- SilcBuffer idp = silc_id_payload_encode(client_id[0], SILC_ID_CLIENT);
- silc_server_command_send_status_data(cmd, SILC_COMMAND_WHOIS,
- SILC_STATUS_ERR_NO_SUCH_CLIENT_ID,
- 2, idp->data, idp->len);
- silc_buffer_free(idp);
- }
- goto out;
- }
+ SilcClientEntry client = silc_packet_get_context(cmd->sock);
+ SilcID id;
+ SilcChannelEntry channel;
+ SilcChannelClientEntry chl;
+ SilcBuffer idp;
+ unsigned char *tmp;
+ SilcUInt32 argc, tmp_len;
+ SilcUInt16 ident = silc_command_get_ident(cmd->payload);
- /* Router always finds the client entry if it exists in the SILC network.
- However, it might be incomplete entry and does not include all the
- mandatory fields that WHOIS command reply requires. Check for these and
- make query from the server who owns the client if some fields are
- missing. */
- if (server->server_type == SILC_ROUTER &&
- !silc_server_command_whois_check(cmd, clients, clients_count)) {
- ret = -1;
+ if (client->data.conn_type != SILC_CONN_CLIENT || !client)
goto out;
- }
- /* Send the command reply to the client */
- silc_server_command_whois_send_reply(cmd, clients, clients_count);
-
- out:
- if (client_id_count) {
- for (i = 0; i < client_id_count; i++)
- silc_free(client_id[i]);
- silc_free(client_id);
- }
- if (clients)
- silc_free(clients);
- if (nick)
- silc_free(nick);
- if (server_name)
- silc_free(server_name);
+ SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_TOPIC, cmd, 1, 2);
- return ret;
-}
+ argc = silc_argument_get_arg_num(cmd->args);
-/* Server side of command WHOIS. Processes user's query and sends found
- results as command replies back to the client. */
+ /* Get Channel ID */
+ if (!silc_argument_get_decoded(cmd->args, 1, SILC_ARGUMENT_ID, &id, NULL)) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
+ SILC_STATUS_ERR_NO_CHANNEL_ID, 0);
+ goto out;
+ }
-SILC_SERVER_CMD_FUNC(whois)
-{
- SilcServerCommandContext cmd = (SilcServerCommandContext)context;
- int ret;
+ /* Check whether the channel exists */
+ channel = silc_idlist_find_channel_by_id(server->local_list,
+ SILC_ID_GET_ID(id), NULL);
+ if (!channel) {
+ channel = silc_idlist_find_channel_by_id(server->global_list,
+ SILC_ID_GET_ID(id), NULL);
+ if (!channel) {
+ tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
+ silc_server_command_send_status_data(cmd, SILC_COMMAND_TOPIC,
+ SILC_STATUS_ERR_NO_SUCH_CHANNEL_ID,
+ 0, 2, tmp, tmp_len);
+ goto out;
+ }
+ }
- SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_WHOIS, cmd, 1, 3);
+ if (argc > 1) {
+ /* Get the topic */
+ tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
+ if (!tmp) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
+ SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
+ 0);
+ goto out;
+ }
+ if (tmp_len > 256) {
+ tmp_len = 256;
+ tmp[tmp_len - 1] = '\0';
+ }
- if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT)
- ret = silc_server_command_whois_from_client(cmd);
- else
- ret = silc_server_command_whois_from_server(cmd);
+ if (!silc_utf8_valid(tmp, tmp_len)) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
+ SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
+ 0);
+ goto out;
+ }
- if (!ret)
- silc_server_command_free(cmd);
-}
+ /* See whether the client is on channel and has rights to change topic */
+ if (!silc_server_client_on_channel(client, channel, &chl)) {
+ tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
+ silc_server_command_send_status_data(cmd, SILC_COMMAND_TOPIC,
+ SILC_STATUS_ERR_NOT_ON_CHANNEL,
+ 0, 2, tmp, tmp_len);
+ goto out;
+ }
-SILC_SERVER_CMD_FUNC(whowas)
-{
-}
+ if (channel->mode & SILC_CHANNEL_MODE_TOPIC &&
+ !(chl->mode & SILC_CHANNEL_UMODE_CHANOP) &&
+ !(chl->mode & SILC_CHANNEL_UMODE_CHANFO)) {
+ tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
+ silc_server_command_send_status_data(cmd, SILC_COMMAND_TOPIC,
+ SILC_STATUS_ERR_NO_CHANNEL_PRIV,
+ 0, 2, tmp, tmp_len);
+ goto out;
+ }
-/******************************************************************************
+ if (!channel->topic || strcmp(channel->topic, tmp)) {
+ /* Set the topic for channel */
+ silc_free(channel->topic);
+ channel->topic = strdup(tmp);
+
+ /* Send TOPIC_SET notify type to the network */
+ silc_server_send_notify_topic_set(server, SILC_PRIMARY_ROUTE(server),
+ SILC_BROADCAST(server), channel,
+ client->id, SILC_ID_CLIENT,
+ channel->topic);
+
+ /* Send notify about topic change to all clients on the channel */
+ idp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
+ silc_server_send_notify_to_channel(server, NULL, channel, FALSE, TRUE,
+ SILC_NOTIFY_TYPE_TOPIC_SET, 2,
+ idp->data, silc_buffer_len(idp),
+ channel->topic,
+ strlen(channel->topic));
+ silc_buffer_free(idp);
+ }
+ }
- IDENTIFY Functions
+ /* Send the topic to client as reply packet */
+ idp = silc_id_payload_encode(SILC_ID_GET_ID(id), SILC_ID_CHANNEL);
+ silc_server_send_command_reply(cmd->server, cmd->sock, SILC_COMMAND_TOPIC,
+ SILC_STATUS_OK, 0, ident, 2,
+ 2, idp->data, silc_buffer_len(idp),
+ 3, channel->topic,
+ channel->topic ?
+ strlen(channel->topic) : 0);
+ silc_buffer_free(idp);
-******************************************************************************/
+ out:
+ silc_server_command_free(cmd);
+}
-/* Checks that all mandatory fields are present. If not then send WHOIS
- request to the server who owns the client. We use WHOIS because we want
- to get as much information as possible at once. */
+/* Server side of INVITE command. Invites some client to join some channel.
+ This command is also used to manage the invite list of the channel. */
-static char
-silc_server_command_identify_check(SilcServerCommandContext cmd,
- SilcClientEntry *clients,
- unsigned int clients_count)
+SILC_SERVER_CMD_FUNC(invite)
{
+ SilcServerCommandContext cmd = (SilcServerCommandContext)context;
SilcServer server = cmd->server;
- int i;
- SilcClientEntry entry;
-
- for (i = 0; i < clients_count; i++) {
- entry = clients[i];
+ SilcPacketStream sock = cmd->sock, dest_sock;
+ SilcChannelClientEntry chl;
+ SilcClientEntry sender, dest;
+ SilcChannelEntry channel;
+ SilcID id, id2;
+ SilcIDListData idata;
+ SilcArgumentPayload args;
+ SilcHashTableList htl;
+ SilcBuffer list, tmp2;
+ SilcBufferStruct alist;
+ unsigned char *tmp, *atype = NULL;
+ SilcUInt32 len, len2, ttype;
+ void *type;
+ SilcUInt16 argc = 0, ident = silc_command_get_ident(cmd->payload);
+
+ SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_INVITE, cmd, 1, 4);
- if (!entry->nickname) {
- SilcBuffer tmpbuf;
- unsigned short old_ident;
-
- if (!entry->router)
- continue;
-
- old_ident = silc_command_get_ident(cmd->payload);
- silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
- silc_command_set_command(cmd->payload, SILC_COMMAND_WHOIS);
- tmpbuf = silc_command_payload_encode_payload(cmd->payload);
-
- /* Send WHOIS request. We send WHOIS since we're doing the requesting
- now anyway so make it a good one. */
- silc_server_packet_send(server, entry->router->connection,
- SILC_PACKET_COMMAND, cmd->packet->flags,
- tmpbuf->data, tmpbuf->len, TRUE);
-
- /* Reprocess this packet after received reply */
- silc_server_command_pending(server, SILC_COMMAND_WHOIS,
- silc_command_get_ident(cmd->payload),
- silc_server_command_identify, (void *)cmd);
- cmd->pending = TRUE;
-
- /* Put old data back to the Command Payload we just changed */
- silc_command_set_ident(cmd->payload, old_ident);
- silc_command_set_command(cmd->payload, SILC_COMMAND_IDENTIFY);
+ /* Get Channel ID */
+ if (!silc_argument_get_decoded(cmd->args, 1, SILC_ARGUMENT_ID, &id, NULL)) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
+ SILC_STATUS_ERR_NO_CHANNEL_ID, 0);
+ goto out;
+ }
- silc_buffer_free(tmpbuf);
- return FALSE;
+ /* Get the channel entry */
+ channel = silc_idlist_find_channel_by_id(server->local_list,
+ SILC_ID_GET_ID(id), NULL);
+ if (!channel) {
+ channel = silc_idlist_find_channel_by_id(server->global_list,
+ SILC_ID_GET_ID(id), NULL);
+ if (!channel) {
+ tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
+ silc_server_command_send_status_data(cmd, SILC_COMMAND_INVITE,
+ SILC_STATUS_ERR_NO_SUCH_CHANNEL_ID,
+ 0, 2, tmp, len);
+ goto out;
}
}
- return TRUE;
-}
-
-static void
-silc_server_command_identify_send_reply(SilcServerCommandContext cmd,
- SilcClientEntry *clients,
- unsigned int clients_count)
-{
- SilcServer server = cmd->server;
- char *tmp;
- int i, count = 0, len;
- SilcBuffer packet, idp;
- SilcClientEntry entry;
- SilcCommandStatus status;
- unsigned short ident = silc_command_get_ident(cmd->payload);
+ /* Check whether the sender of this command is on the channel. */
+ sender = silc_packet_get_context(sock);
+ if (!sender || !silc_server_client_on_channel(sender, channel, &chl)) {
+ tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
+ silc_server_command_send_status_data(cmd, SILC_COMMAND_INVITE,
+ SILC_STATUS_ERR_NOT_ON_CHANNEL, 0,
+ 2, tmp, len);
+ goto out;
+ }
- status = SILC_STATUS_OK;
- if (clients_count > 1)
- status = SILC_STATUS_LIST_START;
+ /* Check whether the channel is invite-only channel. If yes then the
+ sender of this command must be at least channel operator. */
+ if (channel->mode & SILC_CHANNEL_MODE_INVITE &&
+ !(chl->mode & SILC_CHANNEL_UMODE_CHANOP) &&
+ !(chl->mode & SILC_CHANNEL_UMODE_CHANFO)) {
+ tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
+ silc_server_command_send_status_data(cmd, SILC_COMMAND_INVITE,
+ SILC_STATUS_ERR_NO_CHANNEL_PRIV,
+ 0, 2, tmp, len);
+ goto out;
+ }
- for (i = 0; i < clients_count; i++) {
- entry = clients[i];
+ /* Get destination client ID */
+ if (silc_argument_get_decoded(cmd->args, 2, SILC_ARGUMENT_ID, &id2, NULL)) {
+ SilcBool resolve;
+
+ /* Get the client entry */
+ dest = silc_server_query_client(server, SILC_ID_GET_ID(id2),
+ FALSE, &resolve);
+ if (!dest) {
+ if (server->server_type != SILC_SERVER || !resolve || cmd->pending) {
+ tmp = silc_argument_get_arg_type(cmd->args, 2, &len);
+ silc_server_command_send_status_data(
+ cmd, SILC_COMMAND_INVITE,
+ SILC_STATUS_ERR_NO_SUCH_CLIENT_ID, 0,
+ 2, tmp, len);
+ goto out;
+ }
- if (count && i - 1 == count)
- break;
+ /* The client info is being resolved. Reprocess this packet after
+ receiving the reply to the query. */
+ silc_server_command_pending(server, SILC_COMMAND_WHOIS,
+ server->cmd_ident,
+ silc_server_command_invite,
+ silc_server_command_dup(cmd));
+ cmd->pending = TRUE;
+ goto out;
+ }
- if (clients_count > 2)
- status = SILC_STATUS_LIST_ITEM;
+ /* Check whether the requested client is already on the channel. */
+ if (silc_server_client_on_channel(dest, channel, NULL)) {
+ tmp = silc_argument_get_arg_type(cmd->args, 2, &len);
+ atype = silc_argument_get_arg_type(cmd->args, 1, &len2);
+ silc_server_command_send_status_data2(cmd, SILC_COMMAND_INVITE,
+ SILC_STATUS_ERR_USER_ON_CHANNEL,
+ 0, 2, tmp, len,
+ 3, atype, len2);
+ goto out;
+ }
- if (clients_count > 1 && i == clients_count - 1)
- status = SILC_STATUS_LIST_END;
+ /* Get route to the client */
+ dest_sock = silc_server_get_client_route(server, NULL, 0,
+ SILC_ID_GET_ID(id2),
+ &idata, NULL);
+ if (!dest_sock) {
+ tmp = silc_argument_get_arg_type(cmd->args, 2, &len);
+ silc_server_command_send_status_data(cmd, SILC_COMMAND_INVITE,
+ SILC_STATUS_ERR_NO_SUCH_CLIENT_ID,
+ 0, 2, tmp, len);
+ goto out;
+ }
- /* Send IDENTIFY reply */
- idp = silc_id_payload_encode(entry->id, SILC_ID_CLIENT);
- tmp = silc_argument_get_first_arg(cmd->args, NULL);
-
- /* XXX */
- {
- char nh[256], uh[256];
- SilcSocketConnection hsock;
-
- memset(uh, 0, sizeof(uh));
- memset(nh, 0, sizeof(nh));
-
- strncat(nh, entry->nickname, strlen(entry->nickname));
- if (!strchr(entry->nickname, '@')) {
- strncat(nh, "@", 1);
- len = entry->router ? strlen(entry->router->server_name) :
- strlen(server->server_name);
- strncat(nh, entry->router ? entry->router->server_name :
- server->server_name, len);
- }
-
- if (!entry->username) {
- packet = silc_command_reply_payload_encode_va(SILC_COMMAND_IDENTIFY,
- SILC_STATUS_OK, ident, 2,
- 2, idp->data, idp->len,
- 3, nh, strlen(nh));
- } else {
- strncat(uh, entry->username, strlen(entry->username));
- if (!strchr(entry->username, '@')) {
- strncat(uh, "@", 1);
- hsock = (SilcSocketConnection)entry->connection;
- len = strlen(hsock->hostname);
- strncat(uh, hsock->hostname, len);
- }
-
- packet = silc_command_reply_payload_encode_va(SILC_COMMAND_IDENTIFY,
- SILC_STATUS_OK, ident, 3,
- 2, idp->data, idp->len,
- 3, nh, strlen(nh),
- 4, uh, strlen(uh));
+ /* Add the client to the invite list */
+
+ /* Allocate hash table for invite list if it doesn't exist yet */
+ if (!channel->invite_list)
+ channel->invite_list =
+ silc_hash_table_alloc(0, silc_hash_ptr,
+ NULL, NULL, NULL,
+ silc_server_inviteban_destruct, channel, TRUE);
+
+ /* Check if the ID is in the list already */
+ tmp = silc_argument_get_arg_type(cmd->args, 2, &len);
+ silc_hash_table_list(channel->invite_list, &htl);
+ while (silc_hash_table_get(&htl, (void *)&type, (void *)&tmp2)) {
+ if (SILC_PTR_TO_32(type) == 3 && !memcmp(tmp2->data, tmp, len)) {
+ tmp = NULL;
+ break;
}
-
- silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY,
- 0, packet->data, packet->len, FALSE);
-
- silc_buffer_free(packet);
- silc_buffer_free(idp);
}
- }
-}
-
-static int
-silc_server_command_identify_from_client(SilcServerCommandContext cmd)
-{
- SilcServer server = cmd->server;
- char *nick = NULL, *server_name = NULL;
- int count = 0, clients_count = 0;
- SilcClientEntry *clients = NULL, entry;
- SilcClientID **client_id = NULL;
- unsigned int client_id_count = 0;
- int i, ret = 0;
-
- /* Protocol dictates that we must always send the received IDENTIFY request
- to our router if we are normal server, so let's do it now unless we
- are standalone. We will not send any replies to the client until we
- have received reply from the router. */
- if (server->server_type == SILC_SERVER &&
- !cmd->pending && !server->standalone) {
- SilcBuffer tmpbuf;
- unsigned short old_ident;
-
- old_ident = silc_command_get_ident(cmd->payload);
- silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
- tmpbuf = silc_command_payload_encode_payload(cmd->payload);
-
- /* Send IDENTIFY command to our router */
- silc_server_packet_send(server, (SilcSocketConnection)
- server->router->connection,
- SILC_PACKET_COMMAND, cmd->packet->flags,
- tmpbuf->data, tmpbuf->len, TRUE);
-
- /* Reprocess this packet after received reply from router */
- silc_server_command_pending(server, SILC_COMMAND_IDENTIFY,
- silc_command_get_ident(cmd->payload),
- silc_server_command_identify, (void *)cmd);
- cmd->pending = TRUE;
+ silc_hash_table_list_reset(&htl);
- silc_command_set_ident(cmd->payload, old_ident);
+ /* Add new Client ID to invite list */
+ if (tmp) {
+ list = silc_buffer_alloc_size(len);
+ silc_buffer_put(list, tmp, len);
+ silc_hash_table_add(channel->invite_list, (void *)3, list);
+ }
- silc_buffer_free(tmpbuf);
- ret = -1;
- goto out;
+ if (!(dest->mode & SILC_UMODE_BLOCK_INVITE)) {
+ /* Send notify to the client that is invited to the channel */
+ SilcBuffer idp, idp2;
+ idp = silc_id_payload_encode(SILC_ID_GET_ID(id), SILC_ID_CHANNEL);
+ idp2 = silc_id_payload_encode(sender->id, SILC_ID_CLIENT);
+ silc_server_send_notify_dest(server, dest_sock, FALSE,
+ SILC_ID_GET_ID(id2), SILC_ID_CLIENT,
+ SILC_NOTIFY_TYPE_INVITE, 3,
+ idp->data, silc_buffer_len(idp),
+ channel->channel_name,
+ strlen(channel->channel_name),
+ idp2->data, silc_buffer_len(idp2));
+ silc_buffer_free(idp);
+ silc_buffer_free(idp2);
+ }
}
- /* We are ready to process the command request. Let's search for the
- requested client and send reply to the requesting client. */
-
- /* Parse the IDENTIFY request */
- if (!silc_server_command_whois_parse(cmd, &client_id, &client_id_count,
- &nick, &server_name, &count,
- SILC_COMMAND_IDENTIFY))
- return 0;
-
- /* Get all clients matching that ID or nickname from local list */
- if (client_id_count) {
- /* Check all Client ID's received in the command packet */
- for (i = 0; i < client_id_count; i++) {
- entry = silc_idlist_find_client_by_id(server->local_list,
- client_id[i], NULL);
- if (entry) {
- clients = silc_realloc(clients, sizeof(*clients) *
- (clients_count + 1));
- clients[clients_count++] = entry;
- }
+ /* Get the invite information */
+ tmp = silc_argument_get_arg_type(cmd->args, 4, &len2);
+ if (tmp && len2 > 2) {
+ /* Parse the arguments to see they are constructed correctly */
+ SILC_GET16_MSB(argc, tmp);
+ args = silc_argument_payload_parse(tmp + 2, len2 - 2, argc);
+ if (!args) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
+ SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
+ 0);
+ goto out;
}
- } else {
- clients = silc_idlist_get_clients_by_nickname(server->local_list,
- nick, server_name,
- &clients_count);
- }
-
- /* Check global list as well */
- if (!clients) {
- if (client_id_count) {
- /* Check all Client ID's received in the command packet */
- for (i = 0; i < client_id_count; i++) {
- entry = silc_idlist_find_client_by_id(server->global_list,
- client_id[i], NULL);
- if (entry) {
- clients = silc_realloc(clients, sizeof(*clients) *
- (clients_count + 1));
- clients[clients_count++] = entry;
+
+ /* Get the type of action */
+ atype = silc_argument_get_arg_type(cmd->args, 3, &len);
+ if (atype && len == 1) {
+ if (atype[0] == 0x00) {
+ /* Allocate hash table for invite list if it doesn't exist yet */
+ if (!channel->invite_list)
+ channel->invite_list =
+ silc_hash_table_alloc(0, silc_hash_ptr,
+ NULL, NULL, NULL,
+ silc_server_inviteban_destruct, channel,
+ TRUE);
+
+ /* Check for resource limit */
+ if (silc_hash_table_count(channel->invite_list) > 64) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
+ SILC_STATUS_ERR_RESOURCE_LIMIT,
+ 0);
+ goto out;
}
}
- } else {
- clients = silc_idlist_get_clients_by_nickname(server->global_list,
- nick, server_name,
- &clients_count);
- }
- }
-
- if (!clients) {
- /* Such a client really does not exist in the SILC network. */
- if (!client_id_count) {
- silc_server_command_send_status_data(cmd, SILC_COMMAND_IDENTIFY,
- SILC_STATUS_ERR_NO_SUCH_NICK,
- 3, nick, strlen(nick));
- } else {
- SilcBuffer idp = silc_id_payload_encode(client_id[0], SILC_ID_CLIENT);
- silc_server_command_send_status_data(cmd, SILC_COMMAND_IDENTIFY,
- SILC_STATUS_ERR_NO_SUCH_CLIENT_ID,
- 2, idp->data, idp->len);
- silc_buffer_free(idp);
+
+ /* Now add or delete the information. */
+ if (!silc_server_inviteban_process(server, channel->invite_list,
+ (SilcUInt8)atype[0], args)) {
+ silc_server_command_send_status_reply(
+ cmd, SILC_COMMAND_INVITE,
+ SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
+ 0);
+ goto out;
+ }
}
- goto out;
+ silc_argument_payload_free(args);
}
- /* Check that all mandatory fields are present and request those data
- from the server who owns the client if necessary. */
- if (!cmd->pending && server->server_type == SILC_ROUTER &&
- !silc_server_command_identify_check(cmd, clients, clients_count)) {
- ret = -1;
- goto out;
+ /* Encode invite list */
+ list = NULL;
+ if (channel->invite_list && silc_hash_table_count(channel->invite_list)) {
+ list = silc_buffer_alloc_size(2);
+ silc_buffer_format(list,
+ SILC_STR_UI_SHORT(silc_hash_table_count(
+ channel->invite_list)),
+ SILC_STR_END);
+ silc_hash_table_list(channel->invite_list, &htl);
+ while (silc_hash_table_get(&htl, (void *)&type, (void *)&tmp2))
+ list = silc_argument_payload_encode_one(list, tmp2->data,
+ silc_buffer_len(tmp2),
+ SILC_PTR_TO_32(type));
+ silc_hash_table_list_reset(&htl);
}
- /* Send the command reply to the client */
- silc_server_command_identify_send_reply(cmd, clients, clients_count);
-
- out:
- if (client_id_count) {
- for (i = 0; i < client_id_count; i++)
- silc_free(client_id[i]);
- silc_free(client_id);
- }
- if (clients)
- silc_free(clients);
- if (nick)
- silc_free(nick);
- if (server_name)
- silc_free(server_name);
-
- return ret;
-}
+ /* The notify is sent to local servers (not clients), and to network. */
+ if (atype && tmp && len2) {
+ silc_buffer_set(&alist, tmp, len2);
-static int
-silc_server_command_identify_from_server(SilcServerCommandContext cmd)
-{
- SilcServer server = cmd->server;
- char *nick = NULL, *server_name = NULL;
- int count = 0, clients_count = 0;
- SilcClientEntry *clients = NULL, entry;
- SilcClientID **client_id = NULL;
- unsigned int client_id_count = 0;
- int i, ret = 0;
-
- /* Parse the IDENTIFY request */
- if (!silc_server_command_whois_parse(cmd, &client_id, &client_id_count,
- &nick, &server_name, &count,
- SILC_COMMAND_IDENTIFY))
- return 0;
-
- /* Process the command request. Let's search for the requested client and
- send reply to the requesting server. */
-
- if (client_id_count) {
- /* Check all Client ID's received in the command packet */
- for (i = 0; i < client_id_count; i++) {
- entry = silc_idlist_find_client_by_id(server->local_list,
- client_id[i], NULL);
- if (entry) {
- clients = silc_realloc(clients, sizeof(*clients) *
- (clients_count + 1));
- clients[clients_count++] = entry;
- }
- }
- } else {
- clients = silc_idlist_get_clients_by_nickname(server->local_list,
- nick, server_name,
- &clients_count);
- if (!clients)
- clients = silc_idlist_get_clients_by_hash(server->local_list,
- nick, server->md5hash,
- &clients_count);
- }
-
- /* If we are router we will check our global list as well. */
- if (!clients && server->server_type == SILC_ROUTER) {
- if (client_id_count) {
- /* Check all Client ID's received in the command packet */
- for (i = 0; i < client_id_count; i++) {
- entry = silc_idlist_find_client_by_id(server->global_list,
- client_id[i], NULL);
- if (entry) {
- clients = silc_realloc(clients, sizeof(*clients) *
- (clients_count + 1));
- clients[clients_count++] = entry;
- }
- }
- } else {
- clients = silc_idlist_get_clients_by_nickname(server->global_list,
- nick, server_name,
- &clients_count);
- if (!clients)
- clients = silc_idlist_get_clients_by_hash(server->global_list,
- nick, server->md5hash,
- &clients_count);
- }
- }
-
- if (!clients) {
- /* Such a client really does not exist in the SILC network. */
- if (!client_id_count) {
- silc_server_command_send_status_data(cmd, SILC_COMMAND_IDENTIFY,
- SILC_STATUS_ERR_NO_SUCH_NICK,
- 3, nick, strlen(nick));
- } else {
- SilcBuffer idp = silc_id_payload_encode(client_id[0], SILC_ID_CLIENT);
- silc_server_command_send_status_data(cmd, SILC_COMMAND_IDENTIFY,
- SILC_STATUS_ERR_NO_SUCH_CLIENT_ID,
- 2, idp->data, idp->len);
+ /* Send to local servers if we are router */
+ if (server->server_type == SILC_ROUTER) {
+ SilcBuffer idp, idp2;
+ idp = silc_id_payload_encode(SILC_ID_GET_ID(id), SILC_ID_CHANNEL);
+ idp2 = silc_id_payload_encode(sender->id, SILC_ID_CLIENT);
+ silc_server_send_notify_to_channel(server, NULL, channel, FALSE, FALSE,
+ SILC_NOTIFY_TYPE_INVITE, 5,
+ idp->data, silc_buffer_len(idp),
+ channel->channel_name,
+ strlen(channel->channel_name),
+ idp2->data, silc_buffer_len(idp2),
+ atype, 1,
+ tmp ? alist.data : NULL,
+ tmp ? silc_buffer_len(&alist) : 0);
silc_buffer_free(idp);
+ silc_buffer_free(idp2);
}
- goto out;
- }
- /* Check that all mandatory fields are present and request those data
- from the server who owns the client if necessary. */
- if (!cmd->pending && server->server_type == SILC_ROUTER &&
- !silc_server_command_identify_check(cmd, clients, clients_count)) {
- ret = -1;
- goto out;
+ /* Send to network */
+ silc_server_send_notify_invite(server, SILC_PRIMARY_ROUTE(server),
+ SILC_BROADCAST(server), channel,
+ sender->id, atype,
+ tmp ? &alist : NULL);
}
- /* Send the command reply */
- silc_server_command_identify_send_reply(cmd, clients, clients_count);
+ /* Send invite list back only if the list was modified, or no arguments
+ was given. */
+ ttype = 0;
+ argc = silc_argument_get_arg_num(cmd->args);
+ if (argc == 1)
+ ttype = 1;
+ if (silc_argument_get_arg_type(cmd->args, 3, &len))
+ ttype = 1;
+
+ /* Send command reply */
+ tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
+ silc_server_send_command_reply(server, cmd->sock, SILC_COMMAND_INVITE,
+ SILC_STATUS_OK, 0, ident, 2,
+ 2, tmp, len,
+ 3, ttype && list ?
+ list->data : NULL,
+ ttype && list ? silc_buffer_len(list) : 0);
+ silc_buffer_free(list);
out:
- if (client_id_count) {
- for (i = 0; i < client_id_count; i++)
- silc_free(client_id[i]);
- silc_free(client_id);
- }
- if (clients)
- silc_free(clients);
- if (nick)
- silc_free(nick);
- if (server_name)
- silc_free(server_name);
+ silc_server_command_free(cmd);
+}
+
+typedef struct {
+ SilcPacketStream sock;
+ char *signoff;
+} *QuitInternal;
+
+/* Quits connection to client. This gets called if client won't
+ close the connection even when it has issued QUIT command. */
+
+SILC_TASK_CALLBACK(silc_server_command_quit_cb)
+{
+ SilcServer server = app_context;
+ QuitInternal q = (QuitInternal)context;
+ SilcClientEntry client = silc_packet_get_context(q->sock);
+
+ if (client) {
+ /* Free all client specific data, such as client entry and entires
+ on channels this client may be on. */
+ silc_server_free_sock_user_data(server, q->sock, q->signoff);
+ silc_server_close_connection(server, q->sock);
+ }
- return ret;
+ silc_packet_stream_unref(q->sock);
+ silc_free(q->signoff);
+ silc_free(q);
}
-SILC_SERVER_CMD_FUNC(identify)
+/* Quits SILC session. This is the normal way to disconnect client. */
+
+SILC_SERVER_CMD_FUNC(quit)
{
SilcServerCommandContext cmd = (SilcServerCommandContext)context;
- int ret;
+ SilcServer server = cmd->server;
+ SilcPacketStream sock = cmd->sock;
+ SilcClientEntry client = silc_packet_get_context(sock);
+ QuitInternal q;
+ unsigned char *tmp = NULL;
+ SilcUInt32 len = 0;
- SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_IDENTIFY, cmd, 1, 3);
+ SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_QUIT, cmd, 0, 1);
- if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT)
- ret = silc_server_command_identify_from_client(cmd);
- else
- ret = silc_server_command_identify_from_server(cmd);
+ if (client->data.conn_type != SILC_CONN_CLIENT)
+ goto out;
- if (!ret)
- silc_server_command_free(cmd);
-}
+ /* Get message */
+ tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
+ if (len > 128)
+ tmp = NULL;
-/* Checks string for bad characters and returns TRUE if they are found. */
+ q = silc_calloc(1, sizeof(*q));
+ q->sock = sock;
+ q->signoff = tmp ? strdup(tmp) : NULL;
+ silc_packet_stream_ref(q->sock);
-static int silc_server_command_bad_chars(char *nick)
-{
- if (strchr(nick, '\\')) return TRUE;
- if (strchr(nick, '\"')) return TRUE;
- if (strchr(nick, '´')) return TRUE;
- if (strchr(nick, '`')) return TRUE;
- if (strchr(nick, '\'')) return TRUE;
- if (strchr(nick, '*')) return TRUE;
- if (strchr(nick, '/')) return TRUE;
- if (strchr(nick, '@')) return TRUE;
+ /* We quit the connection with little timeout */
+ silc_schedule_task_add_timeout(server->schedule,
+ silc_server_command_quit_cb, (void *)q,
+ 0, 200000);
- return FALSE;
+ out:
+ silc_server_command_free(cmd);
}
-/* Server side of command NICK. Sets nickname for user. Setting
- nickname causes generation of a new client ID for the client. The
- new client ID is sent to the client after changing the nickname. */
+/* Server side of command KILL. This command is used by router operator
+ to remove an client from the SILC Network temporarily. */
-SILC_SERVER_CMD_FUNC(nick)
+SILC_SERVER_CMD_FUNC(kill)
{
SilcServerCommandContext cmd = (SilcServerCommandContext)context;
- SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
SilcServer server = cmd->server;
- SilcBuffer packet, nidp, oidp;
- SilcClientID *new_id;
- char *nick;
+ SilcClientEntry client = silc_packet_get_context(cmd->sock);
+ SilcClientEntry remote_client;
+ SilcID id;
+ unsigned char *tmp, *comment, *auth;
+ SilcUInt32 tmp_len, tmp_len2, auth_len;
- SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_NICK, cmd, 1, 1);
+ SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_KILL, cmd, 1, 3);
- /* Check nickname */
- nick = silc_argument_get_arg_type(cmd->args, 1, NULL);
- if (silc_server_command_bad_chars(nick) == TRUE) {
- silc_server_command_send_status_reply(cmd, SILC_COMMAND_NICK,
- SILC_STATUS_ERR_BAD_NICKNAME);
+ if (client->data.conn_type != SILC_CONN_CLIENT || !client)
goto out;
- }
- /* Create new Client ID */
- silc_id_create_client_id(cmd->server->id, cmd->server->rng,
- cmd->server->md5hash, nick,
- &new_id);
+ /* Get authentication payload if present */
+ auth = silc_argument_get_arg_type(cmd->args, 3, &auth_len);
- /* Send notify about nickname change to our router. We send the new
- ID and ask to replace it with the old one. If we are router the
- packet is broadcasted. */
- if (!cmd->server->standalone)
- silc_server_send_replace_id(server, server->router->connection,
- server->server_type == SILC_SERVER ?
- FALSE : TRUE, client->id,
- SILC_ID_CLIENT, SILC_ID_CLIENT_LEN,
- new_id, SILC_ID_CLIENT, SILC_ID_CLIENT_LEN);
-
- /* Remove old cache entry */
- silc_idcache_del_by_id(server->local_list->clients, SILC_ID_CLIENT,
- client->id);
+ if (!auth) {
+ /* Router operator killing */
- oidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
+ /* KILL command works only on router */
+ if (server->server_type != SILC_ROUTER) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
+ SILC_STATUS_ERR_NO_ROUTER_PRIV, 0);
+ goto out;
+ }
- /* Free old ID */
- if (client->id) {
- memset(client->id, 0, SILC_ID_CLIENT_LEN);
- silc_free(client->id);
+ /* Check whether client has the permissions. */
+ if (!(client->mode & SILC_UMODE_ROUTER_OPERATOR)) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
+ SILC_STATUS_ERR_NO_ROUTER_PRIV, 0);
+ goto out;
+ }
}
- /* Save the nickname as this client is our local client */
- if (client->nickname)
- silc_free(client->nickname);
+ /* Get the client ID */
+ if (!silc_argument_get_decoded(cmd->args, 1, SILC_ARGUMENT_ID, &id, NULL)) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
+ SILC_STATUS_ERR_NO_CLIENT_ID, 0);
+ goto out;
+ }
- client->nickname = strdup(nick);
- client->id = new_id;
+ /* Get the client entry */
+ remote_client = silc_idlist_find_client_by_id(server->local_list,
+ SILC_ID_GET_ID(id),
+ TRUE, NULL);
+ if (!remote_client) {
+ remote_client = silc_idlist_find_client_by_id(server->global_list,
+ SILC_ID_GET_ID(id),
+ TRUE, NULL);
+ if (!remote_client) {
+ tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
+ silc_server_command_send_status_data(cmd, SILC_COMMAND_KILL,
+ SILC_STATUS_ERR_NO_SUCH_CLIENT_ID,
+ 0, 2, tmp, tmp_len);
+ goto out;
+ }
+ }
- /* Update client cache */
- silc_idcache_add(server->local_list->clients, client->nickname,
- SILC_ID_CLIENT, client->id, (void *)client, TRUE);
+ /* Get comment */
+ comment = silc_argument_get_arg_type(cmd->args, 2, &tmp_len2);
+ if (comment && tmp_len2 > 128) {
+ tmp_len2 = 128;
+ comment[tmp_len2 - 1] = '\0';
+ }
- nidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
+ /* If authentication data is provided then verify that killing is
+ actually allowed */
+ if (auth && auth_len) {
+ SilcPacketStream sock;
- /* Send NICK_CHANGE notify */
- silc_server_send_notify_on_channels(server, client,
- SILC_NOTIFY_TYPE_NICK_CHANGE, 2,
- oidp->data, oidp->len,
- nidp->data, nidp->len);
+ if (!SILC_IS_LOCAL(remote_client) || !remote_client->data.public_key) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
+ SILC_STATUS_ERR_OPERATION_ALLOWED,
+ 0);
+ goto out;
+ }
- /* Send the new Client ID as reply command back to client */
- packet = silc_command_reply_payload_encode_va(SILC_COMMAND_NICK,
- SILC_STATUS_OK, 0, 1,
- 2, nidp->data, nidp->len);
- silc_server_packet_send(cmd->server, cmd->sock, SILC_PACKET_COMMAND_REPLY,
- 0, packet->data, packet->len, FALSE);
+ /* Verify the signature */
+ if (!silc_auth_verify_data(auth, auth_len, SILC_AUTH_PUBLIC_KEY,
+ remote_client->data.public_key, 0,
+ server->sha1hash, remote_client->id,
+ SILC_ID_CLIENT)) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_KILL,
+ SILC_STATUS_ERR_AUTH_FAILED, 0);
+ goto out;
+ }
+
+ /* Send reply to the sender */
+ tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
+ silc_server_command_send_status_data(cmd, SILC_COMMAND_KILL,
+ SILC_STATUS_OK, 0,
+ 2, tmp, tmp_len);
+
+ /* Do normal signoff for the destination client */
+ sock = remote_client->connection;
+
+ if (sock)
+ silc_packet_stream_ref(sock);
+
+ silc_server_remove_from_channels(server, NULL, remote_client,
+ TRUE, (char *)"Killed", TRUE, TRUE);
+ silc_server_free_sock_user_data(server, sock, comment ? comment :
+ (unsigned char *)"Killed");
+ if (sock) {
+ silc_packet_set_context(sock, NULL);
+ silc_server_close_connection(server, sock);
+ silc_packet_stream_unref(sock);
+ }
+ } else {
+ /* Router operator killing */
+
+ /* Send reply to the sender */
+ tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
+ silc_server_command_send_status_data(cmd, SILC_COMMAND_KILL,
+ SILC_STATUS_OK, 0,
+ 2, tmp, tmp_len);
+
+ /* Check if anyone is watching this nickname */
+ if (server->server_type == SILC_ROUTER)
+ silc_server_check_watcher_list(server, client, NULL,
+ SILC_NOTIFY_TYPE_KILLED);
+
+ /* Now do the killing */
+ silc_server_kill_client(server, remote_client, comment, client->id,
+ SILC_ID_CLIENT);
+ }
- silc_buffer_free(packet);
- silc_buffer_free(nidp);
- silc_buffer_free(oidp);
-
out:
silc_server_command_free(cmd);
}
-SILC_SERVER_CMD_FUNC(list)
-{
-}
+/* Server side of command INFO. This sends information about us to
+ the client. If client requested specific server we will send the
+ command to that server. */
-/* Server side of TOPIC command. Sets topic for channel and/or returns
- current topic to client. */
-
-SILC_SERVER_CMD_FUNC(topic)
+SILC_SERVER_CMD_FUNC(info)
{
SilcServerCommandContext cmd = (SilcServerCommandContext)context;
SilcServer server = cmd->server;
- SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
- SilcChannelID *channel_id;
- SilcChannelEntry channel;
- SilcChannelClientEntry chl;
- SilcBuffer packet, idp;
+ SilcBuffer idp;
unsigned char *tmp;
- unsigned int argc, tmp_len;
+ SilcUInt32 tmp_len;
+ char *dest_server = NULL, *server_info = NULL, *server_name;
+ SilcUInt16 ident = silc_command_get_ident(cmd->payload);
+ SilcServerEntry entry = NULL;
+ SilcID id;
- SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_TOPIC, cmd, 1, 2);
+ SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_INFO, cmd, 0, 2);
- argc = silc_argument_get_arg_num(cmd->args);
-
- /* Get Channel ID */
- tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
- if (!tmp) {
- silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
- SILC_STATUS_ERR_NO_CHANNEL_ID);
- goto out;
+ /* Get server name */
+ dest_server = silc_argument_get_arg_type(cmd->args, 1, NULL);
+ if (dest_server) {
+ /* Check server name. */
+ dest_server = silc_identifier_check(dest_server, strlen(dest_server),
+ SILC_STRING_UTF8, 256, &tmp_len);
+ if (!dest_server) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_INFO,
+ SILC_STATUS_ERR_BAD_SERVER, 0);
+ goto out;
+ }
}
- channel_id = silc_id_payload_parse_id(tmp, tmp_len);
- /* Check whether the channel exists */
- channel = silc_idlist_find_channel_by_id(server->local_list,
- channel_id, NULL);
- if (!channel) {
- silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
- SILC_STATUS_ERR_NO_SUCH_CHANNEL);
- goto out;
+ /* Get Server ID */
+ if (silc_argument_get_decoded(cmd->args, 2, SILC_ARGUMENT_ID, &id, NULL)) {
+ /* Check whether we have this server cached */
+ entry = silc_idlist_find_server_by_id(server->local_list,
+ SILC_ID_GET_ID(id), TRUE, NULL);
+ if (!entry) {
+ entry = silc_idlist_find_server_by_id(server->global_list,
+ SILC_ID_GET_ID(id), TRUE, NULL);
+ if (!entry && server->server_type != SILC_SERVER) {
+ tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
+ silc_server_command_send_status_data(cmd, SILC_COMMAND_INFO,
+ SILC_STATUS_ERR_NO_SUCH_SERVER_ID,
+ 0, 2, tmp, tmp_len);
+ goto out;
+ }
+ }
}
- if (argc > 1) {
- /* Get the topic */
- tmp = silc_argument_get_arg_type(cmd->args, 2, NULL);
- if (!tmp) {
- silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
- SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
- goto out;
+ if ((!dest_server && !entry) || (entry && entry == server->id_entry) ||
+ (dest_server && !cmd->pending &&
+ !memcmp(dest_server, server->server_name, strlen(dest_server)))) {
+ /* Send our reply */
+ char info_string[256];
+
+ memset(info_string, 0, sizeof(info_string));
+ snprintf(info_string, sizeof(info_string),
+ "location: %s server: %s admin: %s <%s>",
+ server->config->server_info->location,
+ server->config->server_info->server_type,
+ server->config->server_info->admin,
+ server->config->server_info->email);
+
+ server_info = info_string;
+ entry = server->id_entry;
+ } else {
+ /* Check whether we have this server cached */
+ if (!entry && dest_server) {
+ entry = silc_idlist_find_server_by_name(server->global_list,
+ dest_server, TRUE, NULL);
+ if (!entry) {
+ entry = silc_idlist_find_server_by_name(server->local_list,
+ dest_server, TRUE, NULL);
+ }
}
- if (strlen(tmp) > 256) {
- silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
- SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
+ if (!cmd->pending &&
+ server->server_type != SILC_SERVER && entry && !entry->server_info) {
+ /* Send to the server */
+ SilcBuffer tmpbuf;
+ SilcUInt16 old_ident;
+
+ /* Statistics */
+ cmd->server->stat.commands_sent++;
+
+ old_ident = silc_command_get_ident(cmd->payload);
+ silc_command_set_ident(cmd->payload, ++server->cmd_ident);
+ tmpbuf = silc_command_payload_encode_payload(cmd->payload);
+
+ silc_server_packet_send(server, entry->connection,
+ SILC_PACKET_COMMAND, cmd->packet->flags,
+ tmpbuf->data, silc_buffer_len(tmpbuf));
+
+ /* Reprocess this packet after received reply from router */
+ silc_server_command_pending(server, SILC_COMMAND_INFO,
+ silc_command_get_ident(cmd->payload),
+ silc_server_command_info,
+ silc_server_command_dup(cmd));
+ cmd->pending = TRUE;
+ silc_command_set_ident(cmd->payload, old_ident);
+ silc_buffer_free(tmpbuf);
goto out;
}
- /* See whether has rights to change topic */
- silc_list_start(channel->user_list);
- while ((chl = silc_list_get(channel->user_list)) != SILC_LIST_END) {
- if (chl->client == client) {
- if (chl->mode == SILC_CHANNEL_UMODE_NONE) {
- silc_server_command_send_status_reply(cmd, SILC_COMMAND_TOPIC,
- SILC_STATUS_ERR_NO_CHANNEL_PRIV);
- goto out;
- } else {
- break;
- }
- }
- }
+ if (!entry && !cmd->pending && !server->standalone) {
+ /* Send to the primary router */
+ SilcBuffer tmpbuf;
+ SilcUInt16 old_ident;
- /* Set the topic for channel */
- if (channel->topic)
- silc_free(channel->topic);
- channel->topic = strdup(tmp);
+ /* Statistics */
+ cmd->server->stat.commands_sent++;
+
+ old_ident = silc_command_get_ident(cmd->payload);
+ silc_command_set_ident(cmd->payload, ++server->cmd_ident);
+ tmpbuf = silc_command_payload_encode_payload(cmd->payload);
- idp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
+ silc_server_packet_send(server, SILC_PRIMARY_ROUTE(server),
+ SILC_PACKET_COMMAND, cmd->packet->flags,
+ tmpbuf->data, silc_buffer_len(tmpbuf));
- /* Send notify about topic change to all clients on the channel */
- silc_server_send_notify_to_channel(server, channel, TRUE,
- SILC_NOTIFY_TYPE_TOPIC_SET, 2,
- idp->data, idp->len,
- channel->topic, strlen(channel->topic));
- silc_buffer_free(idp);
+ /* Reprocess this packet after received reply from router */
+ silc_server_command_pending(server, SILC_COMMAND_INFO,
+ silc_command_get_ident(cmd->payload),
+ silc_server_command_info,
+ silc_server_command_dup(cmd));
+ cmd->pending = TRUE;
+ silc_command_set_ident(cmd->payload, old_ident);
+ silc_buffer_free(tmpbuf);
+ goto out;
+ }
}
- /* Send the topic to client as reply packet */
- idp = silc_id_payload_encode(channel_id, SILC_ID_CHANNEL);
- if (channel->topic)
- packet = silc_command_reply_payload_encode_va(SILC_COMMAND_TOPIC,
- SILC_STATUS_OK, 0, 2,
- 2, idp->data, idp->len,
- 3, channel->topic,
- strlen(channel->topic));
- else
- packet = silc_command_reply_payload_encode_va(SILC_COMMAND_TOPIC,
- SILC_STATUS_OK, 0, 1,
- 2, idp->data, idp->len);
- silc_server_packet_send(cmd->server, cmd->sock, SILC_PACKET_COMMAND_REPLY,
- 0, packet->data, packet->len, FALSE);
+ if (!entry) {
+ if (dest_server) {
+ silc_free(dest_server);
+ dest_server = silc_argument_get_arg_type(cmd->args, 1, NULL);
+ silc_server_command_send_status_data(cmd, SILC_COMMAND_INFO,
+ SILC_STATUS_ERR_NO_SUCH_SERVER, 0,
+ 2, dest_server,
+ strlen(dest_server));
+ dest_server = NULL;
+ }
+ goto out;
+ }
- silc_buffer_free(packet);
+ idp = silc_id_payload_encode(entry->id, SILC_ID_SERVER);
+ if (!server_info)
+ server_info = entry->server_info;
+ server_name = entry->server_name;
+
+ /* Send the reply */
+ silc_server_send_command_reply(server, cmd->sock, SILC_COMMAND_INFO,
+ SILC_STATUS_OK, 0, ident, 3,
+ 2, idp->data, silc_buffer_len(idp),
+ 3, server_name,
+ strlen(server_name),
+ 4, server_info,
+ server_info ?
+ strlen(server_info) : 0);
silc_buffer_free(idp);
- silc_free(channel_id);
out:
+ silc_free(dest_server);
silc_server_command_free(cmd);
}
-/* Server side of INVITE command. Invites some client to join some channel. */
+/* Server side of command PING. This just replies to the ping. */
-SILC_SERVER_CMD_FUNC(invite)
+SILC_SERVER_CMD_FUNC(ping)
{
SilcServerCommandContext cmd = (SilcServerCommandContext)context;
SilcServer server = cmd->server;
- SilcSocketConnection sock = cmd->sock, dest_sock;
- SilcClientEntry sender, dest;
- SilcClientID *dest_id;
- SilcChannelEntry channel;
- SilcChannelID *channel_id;
- SilcBuffer sidp;
+ SilcUInt32 tmp_len;
unsigned char *tmp;
- unsigned int len;
+ SilcID id;
- SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_INVITE, cmd, 1, 2);
+ SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_PING, cmd, 1, 1);
- /* Get destination ID */
- tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
- if (!tmp) {
- silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
- SILC_STATUS_ERR_NO_CLIENT_ID);
+ /* Get Server ID */
+ if (!silc_argument_get_decoded(cmd->args, 1, SILC_ARGUMENT_ID, &id, NULL)) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_PING,
+ SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
+ 0);
goto out;
}
- dest_id = silc_id_payload_parse_id(tmp, len);
- /* Get Channel ID */
- tmp = silc_argument_get_arg_type(cmd->args, 2, &len);
- if (!tmp) {
- silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
- SILC_STATUS_ERR_NO_CHANNEL_ID);
+ if (SILC_ID_SERVER_COMPARE(SILC_ID_GET_ID(id), server->id)) {
+ /* Send our reply */
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_PING,
+ SILC_STATUS_OK, 0);
+ } else {
+ tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
+ silc_server_command_send_status_data(cmd, SILC_COMMAND_PING,
+ SILC_STATUS_ERR_NO_SUCH_SERVER_ID, 0,
+ 2, tmp, tmp_len);
goto out;
}
- channel_id = silc_id_payload_parse_id(tmp, len);
- /* Check whether the channel exists */
- channel = silc_idlist_find_channel_by_id(server->local_list,
- channel_id, NULL);
- if (!channel) {
- silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
- SILC_STATUS_ERR_NO_SUCH_CHANNEL);
- goto out;
- }
+ out:
+ silc_server_command_free(cmd);
+}
- /* Check whether the sender of this command is on the channel. */
- sender = (SilcClientEntry)sock->user_data;
- if (!silc_server_client_on_channel(sender, channel)) {
- silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
- SILC_STATUS_ERR_NOT_ON_CHANNEL);
- goto out;
- }
+/* Server side of command STATS. */
- /* Check whether the channel is invite-only channel. If yes then the
- sender of this command must be at least channel operator. */
- if (channel->mode & SILC_CHANNEL_MODE_INVITE) {
- SilcChannelClientEntry chl;
+SILC_SERVER_CMD_FUNC(stats)
+{
+ SilcServerCommandContext cmd = (SilcServerCommandContext)context;
+ SilcServer server = cmd->server;
+ SilcID id;
+ unsigned char *tmp;
+ SilcUInt32 tmp_len;
+ SilcBuffer packet, stats;
+ SilcUInt16 ident = silc_command_get_ident(cmd->payload);
+ SilcUInt32 uptime;
- silc_list_start(channel->user_list);
- while ((chl = silc_list_get(channel->user_list)) != SILC_LIST_END)
- if (chl->client == sender) {
- if (chl->mode == SILC_CHANNEL_UMODE_NONE) {
- silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
- SILC_STATUS_ERR_NO_CHANNEL_PRIV);
- goto out;
- }
- break;
- }
+ SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_STATS, cmd, 1, 1);
+
+ /* Get Server ID */
+ if (!silc_argument_get_decoded(cmd->args, 1, SILC_ARGUMENT_ID, &id, NULL)) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_STATS,
+ SILC_STATUS_ERR_NO_SERVER_ID, 0);
+ goto out;
}
- /* Find the connection data for the destination. If it is local we will
- send it directly otherwise we will send it to router for routing. */
- dest = silc_idlist_find_client_by_id(server->local_list, dest_id, NULL);
- if (dest)
- dest_sock = (SilcSocketConnection)dest->connection;
- else
- dest_sock = silc_server_route_get(server, dest_id, SILC_ID_CLIENT);
+ SILC_LOG_DEBUG(("id %s", silc_id_render(SILC_ID_GET_ID(id),
+ id.type)));
- /* Check whether the requested client is already on the channel. */
- /* XXX if we are normal server we don't know about global clients on
- the channel thus we must request it (USERS command), check from
- local cache as well. */
- if (silc_server_client_on_channel(dest, channel)) {
- silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
- SILC_STATUS_ERR_USER_ON_CHANNEL);
+ /* The ID must be ours */
+ if (!SILC_ID_SERVER_COMPARE(server->id, SILC_ID_GET_ID(id))) {
+ tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
+ silc_server_command_send_status_data(cmd, SILC_COMMAND_STATS,
+ SILC_STATUS_ERR_NO_SUCH_SERVER_ID, 0,
+ 2, tmp, tmp_len);
goto out;
}
- sidp = silc_id_payload_encode(sender->id, SILC_ID_CLIENT);
+ /* If we are router then just send everything we got. If we are normal
+ server then we'll send this to our router to get all the latest
+ statistical information. */
+ if (!cmd->pending && server->server_type != SILC_ROUTER &&
+ !server->standalone) {
+ SilcBuffer idp;
+
+ /* Statistics */
+ cmd->server->stat.commands_sent++;
+
+ /* Send request to our router */
+ idp = silc_id_payload_encode(server->router->id,
+ SILC_ID_SERVER);
+ packet = silc_command_payload_encode_va(SILC_COMMAND_STATS,
+ ++server->cmd_ident, 1,
+ 1, idp->data,
+ silc_buffer_len(idp));
+ silc_server_packet_send(server, SILC_PRIMARY_ROUTE(server),
+ SILC_PACKET_COMMAND, 0, packet->data,
+ silc_buffer_len(packet));
- /* Send notify to the client that is invited to the channel */
- silc_server_send_notify_dest(server, dest_sock, dest_id, SILC_ID_CLIENT,
- SILC_NOTIFY_TYPE_INVITE, 2,
- sidp->data, sidp->len, tmp, len);
+ /* Reprocess this packet after received reply from router */
+ silc_server_command_pending(server, SILC_COMMAND_STATS,
+ server->cmd_ident,
+ silc_server_command_stats,
+ silc_server_command_dup(cmd));
+ cmd->pending = TRUE;
+ silc_buffer_free(packet);
+ silc_buffer_free(idp);
+ goto out;
+ }
- /* Send command reply */
- silc_server_command_send_status_reply(cmd, SILC_COMMAND_INVITE,
- SILC_STATUS_OK);
+ /* Send our reply to sender */
+ uptime = time(NULL) - server->starttime;
+
+ stats = silc_buffer_alloc_size(60);
+ silc_buffer_format(stats,
+ SILC_STR_UI_INT(server->starttime),
+ SILC_STR_UI_INT(uptime),
+ SILC_STR_UI_INT(server->stat.my_clients),
+ SILC_STR_UI_INT(server->stat.my_channels),
+ SILC_STR_UI_INT(server->stat.my_server_ops),
+ SILC_STR_UI_INT(server->stat.my_router_ops),
+ SILC_STR_UI_INT(server->stat.cell_clients),
+ SILC_STR_UI_INT(server->stat.cell_channels),
+ SILC_STR_UI_INT(server->stat.cell_servers),
+ SILC_STR_UI_INT(server->stat.clients),
+ SILC_STR_UI_INT(server->stat.channels),
+ SILC_STR_UI_INT(server->stat.servers),
+ SILC_STR_UI_INT(server->stat.routers),
+ SILC_STR_UI_INT(server->stat.server_ops),
+ SILC_STR_UI_INT(server->stat.router_ops),
+ SILC_STR_END);
- silc_buffer_free(sidp);
+ tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
+ silc_server_send_command_reply(server, cmd->sock, SILC_COMMAND_STATS,
+ SILC_STATUS_OK, 0, ident, 2,
+ 2, tmp, tmp_len,
+ 3, stats->data, silc_buffer_len(stats));
+ silc_buffer_free(stats);
out:
silc_server_command_free(cmd);
}
-/* Quits connection to client. This gets called if client won't
- close the connection even when it has issued QUIT command. */
+/* Internal routine to join channel. The channel sent to this function
+ has been either created or resolved from ID lists. This joins the sent
+ client to the channel. */
-SILC_TASK_CALLBACK(silc_server_command_quit_cb)
+static void silc_server_command_join_channel(SilcServer server,
+ SilcServerCommandContext cmd,
+ SilcChannelEntry channel,
+ SilcClientID *client_id,
+ SilcBool created,
+ SilcBool create_key,
+ SilcUInt32 umode,
+ const unsigned char *auth,
+ SilcUInt32 auth_len,
+ const unsigned char *cauth,
+ SilcUInt32 cauth_len)
{
- SilcServer server = (SilcServer)context;
- SilcSocketConnection sock = server->sockets[fd];
-
- /* Free all client specific data, such as client entry and entires
- on channels this client may be on. */
- silc_server_free_sock_user_data(server, sock);
-
- /* Close the connection on our side */
- silc_server_close_connection(server, sock);
-}
+ SilcPacketStream sock = cmd->sock;
+ SilcIDListData idata = silc_packet_get_context(sock);
+ unsigned char *tmp;
+ SilcUInt32 tmp_len, user_count;
+ unsigned char *passphrase = NULL, mode[4], tmp2[4], tmp3[4], ulimit[4];
+ SilcClientEntry client;
+ SilcChannelClientEntry chl;
+ SilcBuffer reply, chidp, clidp, keyp = NULL;
+ SilcBuffer user_list, mode_list, invite_list, ban_list;
+ SilcUInt16 ident = silc_command_get_ident(cmd->payload);
+ char check[512], check2[512];
+ void *plen;
+ SilcBool founder = FALSE;
+ SilcBool resolve;
+ SilcBuffer fkey = NULL, chpklist = NULL;
+ const char *cipher, *hostname, *ip;
+
+ SILC_LOG_DEBUG(("Joining client to channel"));
-/* Quits SILC session. This is the normal way to disconnect client. */
-
-SILC_SERVER_CMD_FUNC(quit)
-{
- SilcServerCommandContext cmd = (SilcServerCommandContext)context;
- SilcServer server = cmd->server;
- SilcSocketConnection sock = cmd->sock;
+ if (!channel)
+ return;
- SILC_LOG_DEBUG(("Start"));
+ silc_socket_stream_get_info(silc_packet_stream_get_stream(sock),
+ NULL, &hostname, &ip, NULL);
- /* We quit the connection with little timeout */
- silc_task_register(server->timeout_queue, sock->sock,
- silc_server_command_quit_cb, server,
- 0, 300000, SILC_TASK_TIMEOUT, SILC_TASK_PRI_LOW);
+ /* Get the client entry */
+ if (idata->conn_type == SILC_CONN_CLIENT) {
+ client = (SilcClientEntry)idata;
+ if (!client)
+ return;
+ } else {
+ client = silc_server_query_client(server, client_id, FALSE,
+ &resolve);
+ if (!client) {
+ if (!resolve || cmd->pending) {
+ tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
+ silc_server_command_send_status_data(
+ cmd, SILC_COMMAND_JOIN,
+ SILC_STATUS_ERR_NO_SUCH_CLIENT_ID, 0,
+ 2, tmp, tmp_len);
+ goto out;
+ }
- silc_server_command_free(cmd);
-}
+ /* The client info is being resolved. Reprocess this packet after
+ receiving the reply to the query. */
+ silc_server_command_pending(server, SILC_COMMAND_WHOIS,
+ server->cmd_ident,
+ silc_server_command_join,
+ silc_server_command_dup(cmd));
+ cmd->pending = TRUE;
+ goto out;
+ }
-SILC_SERVER_CMD_FUNC(kill)
-{
-}
+ if (!client->data.public_key &&
+ (auth || cauth || channel->ban_list ||
+ (channel->mode & SILC_CHANNEL_MODE_INVITE))) {
+ if (cmd->pending == 2)
+ goto out;
-/* Server side of command INFO. This sends information about us to
- the client. If client requested specific server we will send the
- command to that server. */
+ /* We must retrieve the client's public key by sending
+ GETKEY command. Reprocess this packet after receiving the key */
+ clidp = silc_id_payload_encode(client_id, SILC_ID_CLIENT);
+ silc_server_send_command(server, cmd->sock,
+ SILC_COMMAND_GETKEY, ++server->cmd_ident,
+ 1, 1, clidp->data, silc_buffer_len(clidp));
+ silc_buffer_free(clidp);
+ silc_server_command_pending(server, SILC_COMMAND_GETKEY,
+ server->cmd_ident,
+ silc_server_command_join,
+ silc_server_command_dup(cmd));
+ cmd->pending = 2;
+ goto out;
+ }
-SILC_SERVER_CMD_FUNC(info)
-{
- SilcServerCommandContext cmd = (SilcServerCommandContext)context;
- SilcServer server = cmd->server;
- SilcBuffer packet, idp;
- char info_string[256], *dest_server;
+ cmd->pending = FALSE;
+ }
- SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_INFO, cmd, 1, 1);
+ /*
+ * Check founder auth payload if provided. If client can gain founder
+ * privileges it can override various conditions on joining the channel,
+ * and can have directly the founder mode set on the channel.
+ */
+ if (auth && auth_len && channel->mode & SILC_CHANNEL_MODE_FOUNDER_AUTH) {
+ SilcIDListData idata = (SilcIDListData)client;
+ SilcChannelClientEntry chl2;
+ SilcHashTableList htl;
+
+ if (channel->founder_key && idata->public_key &&
+ silc_pkcs_public_key_compare(channel->founder_key,
+ idata->public_key)) {
+ /* Check whether the client is to become founder */
+ if (silc_auth_verify_data(auth, auth_len, SILC_AUTH_PUBLIC_KEY,
+ channel->founder_key, 0, server->sha1hash,
+ client->id, SILC_ID_CLIENT)) {
+
+ /* There cannot be anyone else as founder on the channel now. This
+ client is definitely the founder due to this authentication */
+ silc_hash_table_list(channel->user_list, &htl);
+ while (silc_hash_table_get(&htl, NULL, (void *)&chl2))
+ if (chl2->mode & SILC_CHANNEL_UMODE_CHANFO) {
+ chl2->mode &= ~SILC_CHANNEL_UMODE_CHANFO;
+ silc_server_force_cumode_change(server, NULL, channel, chl2,
+ chl2->mode);
+ break;
+ }
+ silc_hash_table_list_reset(&htl);
- /* Get server name */
- dest_server = silc_argument_get_arg_type(cmd->args, 1, NULL);
- if (!dest_server) {
- silc_server_command_send_status_reply(cmd, SILC_COMMAND_INFO,
- SILC_STATUS_ERR_NO_SUCH_SERVER);
- goto out;
+ umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
+ founder = TRUE;
+ }
+ }
}
- if (!strncasecmp(dest_server, server->server_name, strlen(dest_server))) {
- /* Send our reply */
- memset(info_string, 0, sizeof(info_string));
- snprintf(info_string, sizeof(info_string),
- "location: %s server: %s admin: %s <%s>",
- server->config->admin_info->location,
- server->config->admin_info->server_type,
- server->config->admin_info->admin_name,
- server->config->admin_info->admin_email);
-
- idp = silc_id_payload_encode(server->id, SILC_ID_SERVER);
-
- packet = silc_command_reply_payload_encode_va(SILC_COMMAND_INFO,
- SILC_STATUS_OK, 0, 2,
- 2, idp->data, idp->len,
- 3, info_string,
- strlen(info_string));
- silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
- packet->data, packet->len, FALSE);
-
- silc_buffer_free(packet);
- silc_buffer_free(idp);
- } else {
- /* Send this command to the requested server */
+ /*
+ * Check channel modes
+ */
+
+ if (!umode) {
+ memset(check, 0, sizeof(check));
+ memset(check2, 0, sizeof(check2));
+ silc_strncat(check, sizeof(check),
+ client->nickname, strlen(client->nickname));
+ silc_strncat(check, sizeof(check), "!", 1);
+ silc_strncat(check, sizeof(check),
+ client->username, strlen(client->username));
+ if (!strchr(client->username, '@')) {
+ silc_strncat(check, sizeof(check), "@", 1);
+ silc_strncat(check, sizeof(check),
+ hostname, strlen(hostname));
+ }
- if (server->server_type == SILC_SERVER && !server->standalone) {
+ silc_strncat(check2, sizeof(check2),
+ client->nickname, strlen(client->nickname));
+ if (!strchr(client->nickname, '@')) {
+ silc_strncat(check2, sizeof(check2), "@", 1);
+ silc_strncat(check2, sizeof(check2),
+ SILC_IS_LOCAL(client) ? server->server_name :
+ client->router->server_name,
+ SILC_IS_LOCAL(client) ? strlen(server->server_name) :
+ strlen(client->router->server_name));
+ }
+ silc_strncat(check2, sizeof(check2), "!", 1);
+ silc_strncat(check2, sizeof(check2),
+ client->username, strlen(client->username));
+ if (!strchr(client->username, '@')) {
+ silc_strncat(check2, sizeof(check2), "@", 1);
+ silc_strncat(check2, sizeof(check2),
+ hostname, strlen(hostname));
+ }
+ /* Check invite list if channel is invite-only channel */
+ if (channel->mode & SILC_CHANNEL_MODE_INVITE) {
+ if (!channel->invite_list ||
+ !silc_hash_table_count(channel->invite_list) ||
+ (!silc_server_inviteban_match(server, channel->invite_list,
+ 3, client->id) &&
+ !silc_server_inviteban_match(server, channel->invite_list,
+ 2, client->data.public_key) &&
+ !silc_server_inviteban_match(server, channel->invite_list,
+ 1, client->nickname) &&
+ !silc_server_inviteban_match(server, channel->invite_list,
+ 1, check) &&
+ !silc_server_inviteban_match(server, channel->invite_list,
+ 1, check2))) {
+ chidp = silc_id_payload_encode(channel->id, SILC_ID_CHANNEL);
+ silc_server_command_send_status_data(cmd, SILC_COMMAND_JOIN,
+ SILC_STATUS_ERR_NOT_INVITED, 0,
+ 2, chidp->data,
+ silc_buffer_len(chidp));
+ silc_buffer_free(chidp);
+ goto out;
+ }
}
- if (server->server_type == SILC_ROUTER) {
+ /* Check ban list if it exists. If the client's nickname, server,
+ username and/or hostname is in the ban list the access to the
+ channel is denied. */
+ if (channel->ban_list && silc_hash_table_count(channel->ban_list)) {
+ if (silc_server_inviteban_match(server, channel->ban_list,
+ 3, client->id) ||
+ silc_server_inviteban_match(server, channel->ban_list,
+ 2, client->data.public_key) ||
+ silc_server_inviteban_match(server, channel->ban_list,
+ 1, client->nickname) ||
+ silc_server_inviteban_match(server, channel->ban_list,
+ 1, check) ||
+ silc_server_inviteban_match(server, channel->ban_list,
+ 1, check2)) {
+ chidp = silc_id_payload_encode(channel->id, SILC_ID_CHANNEL);
+ silc_server_command_send_status_data(
+ cmd, SILC_COMMAND_JOIN,
+ SILC_STATUS_ERR_BANNED_FROM_CHANNEL, 0,
+ 2, chidp->data,
+ silc_buffer_len(chidp));
+ silc_buffer_free(chidp);
+ goto out;
+ }
+ }
+ /* Check user count limit if set. */
+ if (channel->mode & SILC_CHANNEL_MODE_ULIMIT) {
+ if (silc_hash_table_count(channel->user_list) + 1 >
+ channel->user_limit) {
+ chidp = silc_id_payload_encode(channel->id, SILC_ID_CHANNEL);
+ silc_server_command_send_status_data(cmd, SILC_COMMAND_JOIN,
+ SILC_STATUS_ERR_CHANNEL_IS_FULL,
+ 0, 2, chidp->data,
+ silc_buffer_len(chidp));
+ silc_buffer_free(chidp);
+ goto out;
+ }
}
}
-
- out:
- silc_server_command_free(cmd);
-}
-
-SILC_SERVER_CMD_FUNC(connect)
-{
-}
-/* Server side of command PING. This just replies to the ping. */
+ /* Check the channel passphrase if set. */
+ if (channel->mode & SILC_CHANNEL_MODE_PASSPHRASE) {
+ /* Get passphrase */
+ tmp = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
+ if (tmp)
+ passphrase = silc_memdup(tmp, tmp_len);
+
+ if (!passphrase || !channel->passphrase ||
+ strlen(channel->passphrase) != strlen(passphrase) ||
+ memcmp(passphrase, channel->passphrase, strlen(channel->passphrase))) {
+ chidp = silc_id_payload_encode(channel->id, SILC_ID_CHANNEL);
+ silc_server_command_send_status_data(cmd, SILC_COMMAND_JOIN,
+ SILC_STATUS_ERR_BAD_PASSWORD, 0,
+ 2, chidp->data,
+ silc_buffer_len(chidp));
+ silc_buffer_free(chidp);
+ goto out;
+ }
+ }
-SILC_SERVER_CMD_FUNC(ping)
-{
- SilcServerCommandContext cmd = (SilcServerCommandContext)context;
- SilcServer server = cmd->server;
- SilcServerID *id;
- unsigned int len;
- unsigned char *tmp;
+ /* Verify channel authentication with channel public keys if set. */
+ if (channel->mode & SILC_CHANNEL_MODE_CHANNEL_AUTH) {
+ if (!silc_server_verify_channel_auth(server, channel, client->id,
+ cauth, cauth_len)) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
+ SILC_STATUS_ERR_PERM_DENIED, 0);
+ goto out;
+ }
+ }
- SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_INFO, cmd, 1, 2);
+ /*
+ * Client is allowed to join to the channel. Make it happen.
+ */
- /* Get Server ID */
- tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
- if (!tmp) {
- silc_server_command_send_status_reply(cmd, SILC_COMMAND_PING,
- SILC_STATUS_ERR_NO_SERVER_ID);
+ /* Check whether the client already is on the channel */
+ if (silc_server_client_on_channel(client, channel, NULL)) {
+ clidp = silc_id_payload_encode(client_id, SILC_ID_CLIENT);
+ chidp = silc_id_payload_encode(channel->id, SILC_ID_CHANNEL);
+ silc_server_command_send_status_data2(cmd, SILC_COMMAND_JOIN,
+ SILC_STATUS_ERR_USER_ON_CHANNEL, 0,
+ 2, clidp->data,
+ silc_buffer_len(clidp),
+ 3, chidp->data,
+ silc_buffer_len(chidp));
+ silc_buffer_free(clidp);
+ silc_buffer_free(chidp);
goto out;
}
- id = silc_id_str2id(tmp, SILC_ID_SERVER);
- if (!id)
- goto out;
- if (!SILC_ID_SERVER_COMPARE(id, server->id)) {
- /* Send our reply */
- silc_server_command_send_status_reply(cmd, SILC_COMMAND_PING,
- SILC_STATUS_OK);
- } else {
- silc_server_command_send_status_reply(cmd, SILC_COMMAND_PING,
- SILC_STATUS_ERR_NO_SUCH_SERVER);
- goto out;
- }
+ /* Generate new channel key as protocol dictates */
+ if (create_key) {
+ if (!silc_server_create_channel_key(server, channel, 0))
+ goto out;
- silc_free(id);
+ /* Send the channel key. This is broadcasted to the channel but is not
+ sent to the client who is joining to the channel. */
+ if (!(channel->mode & SILC_CHANNEL_MODE_PRIVKEY))
+ silc_server_send_channel_key(server, NULL, channel,
+ server->server_type == SILC_ROUTER ?
+ FALSE : !server->standalone);
+ }
- out:
- silc_server_command_free(cmd);
-}
+ /* Join the client to the channel by adding it to channel's user list.
+ Add also the channel to client entry's channels list for fast cross-
+ referencing. */
+ chl = silc_calloc(1, sizeof(*chl));
+ chl->mode = umode;
+ chl->client = client;
+ chl->channel = channel;
+ silc_hash_table_add(channel->user_list, client, chl);
+ silc_hash_table_add(client->channels, channel, chl);
+ channel->user_count++;
+ channel->disabled = FALSE;
-SILC_SERVER_CMD_FUNC(oper)
-{
-}
+ /* Get users on the channel */
+ silc_server_get_users_on_channel(server, channel, &user_list, &mode_list,
+ &user_count);
-/* Assembles USERS command and executes it. This is called when client
- joins to a channel and we wan't to send USERS command reply to the
- client. */
+ /* Encode Client ID Payload of the original client who wants to join */
+ clidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
+
+ /* Encode command reply packet */
+ chidp = silc_id_payload_encode(channel->id, SILC_ID_CHANNEL);
+ SILC_PUT32_MSB(channel->mode, mode);
+ SILC_PUT32_MSB(created, tmp2);
+ SILC_PUT32_MSB(user_count, tmp3);
+ if (channel->mode & SILC_CHANNEL_MODE_ULIMIT)
+ SILC_PUT32_MSB(channel->user_limit, ulimit);
+
+ if (!(channel->mode & SILC_CHANNEL_MODE_PRIVKEY)) {
+ unsigned char cid[32];
+ SilcUInt32 cid_len;
+ silc_id_id2str(channel->id, SILC_ID_CHANNEL, cid, sizeof(cid), &cid_len);
+ cipher = silc_cipher_get_name(channel->send_key);
+ keyp = silc_channel_key_payload_encode(cid_len, cid,
+ strlen(cipher), cipher,
+ channel->key_len / 8, channel->key);
+ }
+
+ if (channel->founder_key)
+ fkey = silc_public_key_payload_encode(channel->founder_key);
+
+ /* Encode invite list */
+ invite_list = NULL;
+ if (channel->invite_list && silc_hash_table_count(channel->invite_list)) {
+ SilcHashTableList htl;
+
+ invite_list = silc_buffer_alloc_size(2);
+ silc_buffer_format(invite_list,
+ SILC_STR_UI_SHORT(silc_hash_table_count(
+ channel->invite_list)),
+ SILC_STR_END);
+
+ silc_hash_table_list(channel->invite_list, &htl);
+ while (silc_hash_table_get(&htl, (void *)&plen, (void *)&reply))
+ invite_list = silc_argument_payload_encode_one(invite_list,
+ reply->data,
+ silc_buffer_len(reply),
+ SILC_PTR_TO_32(plen));
+ silc_hash_table_list_reset(&htl);
+ }
+
+ /* Encode ban list */
+ ban_list = NULL;
+ if (channel->ban_list && silc_hash_table_count(channel->ban_list)) {
+ SilcHashTableList htl;
+
+ ban_list = silc_buffer_alloc_size(2);
+ silc_buffer_format(ban_list,
+ SILC_STR_UI_SHORT(silc_hash_table_count(
+ channel->ban_list)),
+ SILC_STR_END);
+
+ silc_hash_table_list(channel->ban_list, &htl);
+ while (silc_hash_table_get(&htl, (void *)&plen, (void *)&reply))
+ ban_list = silc_argument_payload_encode_one(ban_list,
+ reply->data,
+ silc_buffer_len(reply),
+ SILC_PTR_TO_32(plen));
+ silc_hash_table_list_reset(&htl);
+ }
+
+ if (channel->channel_pubkeys)
+ chpklist = silc_server_get_channel_pk_list(server, channel, FALSE, FALSE);
+
+ reply =
+ silc_command_reply_payload_encode_va(SILC_COMMAND_JOIN,
+ SILC_STATUS_OK, 0, ident, 16,
+ 2, channel->channel_name,
+ strlen(channel->channel_name),
+ 3, chidp->data,
+ silc_buffer_len(chidp),
+ 4, clidp->data,
+ silc_buffer_len(clidp),
+ 5, mode, 4,
+ 6, tmp2, 4,
+ 7, keyp ? keyp->data : NULL,
+ keyp ? silc_buffer_len(keyp) : 0,
+ 8, ban_list ? ban_list->data : NULL,
+ ban_list ?
+ silc_buffer_len(ban_list): 0,
+ 9, invite_list ? invite_list->data :
+ NULL,
+ invite_list ?
+ silc_buffer_len(invite_list) : 0,
+ 10, channel->topic,
+ channel->topic ?
+ strlen(channel->topic) : 0,
+ 11, silc_hmac_get_name(channel->hmac),
+ strlen(silc_hmac_get_name(channel->
+ hmac)),
+ 12, tmp3, 4,
+ 13, user_list->data,
+ silc_buffer_len(user_list),
+ 14, mode_list->data,
+ silc_buffer_len(mode_list),
+ 15, fkey ? fkey->data : NULL,
+ fkey ? silc_buffer_len(fkey) : 0,
+ 16, chpklist ? chpklist->data : NULL,
+ chpklist ? silc_buffer_len(chpklist) : 0,
+ 17, (channel->mode &
+ SILC_CHANNEL_MODE_ULIMIT ?
+ ulimit : NULL),
+ (channel->mode &
+ SILC_CHANNEL_MODE_ULIMIT ?
+ sizeof(ulimit) : 0));
+
+ /* Send command reply */
+ silc_server_packet_send(server, sock, SILC_PACKET_COMMAND_REPLY, 0,
+ reply->data, silc_buffer_len(reply));
+
+ /* Statistics */
+ cmd->server->stat.commands_sent++;
+
+ /* Send JOIN notify to locally connected clients on the channel. If
+ we are normal server then router will send or have sent JOIN notify
+ already. However since we've added the client already to our channel
+ we'll ignore it (in packet_receive.c) so we must send it here. If
+ we are router then this will send it to local clients and local
+ servers. */
+ SILC_LOG_DEBUG(("Send JOIN notify to channel"));
+ silc_server_send_notify_to_channel(server, NULL, channel, FALSE, TRUE,
+ SILC_NOTIFY_TYPE_JOIN, 2,
+ clidp->data, silc_buffer_len(clidp),
+ chidp->data, silc_buffer_len(chidp));
+
+ /* Update statistics */
+ server->stat.my_chanclients++;
+ if (server->server_type == SILC_ROUTER) {
+ server->stat.cell_chanclients++;
+ server->stat.chanclients++;
+ }
+
+ if (!cmd->pending) {
+ /* Send JOIN notify packet to our primary router */
+ silc_server_send_notify_join(server, SILC_PRIMARY_ROUTE(server),
+ SILC_BROADCAST(server), channel, client->id);
+
+ if (keyp)
+ /* Distribute the channel key to all backup routers. */
+ silc_server_backup_send(server, NULL, SILC_PACKET_CHANNEL_KEY, 0,
+ keyp->data, silc_buffer_len(keyp), FALSE, TRUE);
+
+ /* If client became founder by providing correct founder auth data
+ notify the mode change to the channel. */
+ if (founder) {
+ SILC_PUT32_MSB(chl->mode, mode);
+ SILC_LOG_DEBUG(("Send CUMODE_CHANGE notify to channel"));
+ silc_server_send_notify_to_channel(server, NULL, channel, FALSE, TRUE,
+ SILC_NOTIFY_TYPE_CUMODE_CHANGE, 4,
+ clidp->data,
+ silc_buffer_len(clidp),
+ mode, 4, clidp->data,
+ silc_buffer_len(clidp),
+ fkey ? fkey->data : NULL,
+ fkey ? silc_buffer_len(fkey) : 0);
+ }
+ }
+
+ /* Set CUMODE notify type to network */
+ if (founder)
+ silc_server_send_notify_cumode(server, SILC_PRIMARY_ROUTE(server),
+ SILC_BROADCAST(server), channel,
+ chl->mode, client->id, SILC_ID_CLIENT,
+ client->id, channel->founder_key);
+
+ silc_buffer_free(reply);
+ silc_buffer_free(clidp);
+ silc_buffer_free(chidp);
+ silc_buffer_free(keyp);
+ silc_buffer_free(user_list);
+ silc_buffer_free(mode_list);
+ silc_buffer_free(fkey);
+ silc_buffer_free(chpklist);
+ silc_buffer_free(invite_list);
+ silc_buffer_free(ban_list);
+
+ out:
+ if (passphrase)
+ memset(passphrase, 0, strlen(passphrase));
+ silc_free(passphrase);
+}
+
+/* Server side of command JOIN. Joins client into requested channel. If
+ the channel does not exist it will be created. */
-void silc_server_command_send_users(SilcServer server,
- SilcSocketConnection sock,
- SilcChannelEntry channel,
- int pending)
+void silc_server_command_join_connected(SilcServer server,
+ SilcServerEntry server_entry,
+ void *context)
{
- SilcServerCommandContext cmd;
- SilcBuffer buffer, idp;
- SilcPacketContext *packet = silc_packet_context_alloc();
+ SilcServerCommandContext cmd = (SilcServerCommandContext)context;
- /* Create USERS command packet and process it. */
- idp = silc_id_payload_encode(channel->id, SILC_ID_CHANNEL);
- buffer = silc_command_payload_encode_va(SILC_COMMAND_USERS, 0, 1,
- 1, idp->data, idp->len);
-
- packet->buffer = silc_buffer_copy(buffer);
- packet->sock = sock;
- packet->type = SILC_PACKET_COMMAND;
-
- cmd = silc_calloc(1, sizeof(*cmd));
- cmd->payload = silc_command_payload_parse(buffer);
- cmd->args = silc_command_get_args(cmd->payload);
- cmd->server = server;
- cmd->sock = sock;
- cmd->packet = silc_packet_context_dup(packet);
- cmd->pending = FALSE;
-
- if (pending) {
- /* If this function was called from pending command then instead of
- processing the command now, register a pending command callback which
- will process it after we've received the automatic USERS command
- reply. */
- silc_server_command_pending(server, SILC_COMMAND_USERS, 0,
- silc_server_command_users, (void *)cmd);
- cmd->pending = TRUE;
- silc_free(buffer);
- silc_free(idp);
+ if (!server_entry) {
+ SilcUInt32 tmp_len;
+ unsigned char *tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
+ char serv[256 + 1];
+
+ SILC_LOG_DEBUG(("Connecting to router failed"));
+ silc_parse_userfqdn(tmp, NULL, 0, serv, sizeof(serv));
+
+ if (serv[0]) {
+ silc_server_command_send_status_data(cmd, SILC_COMMAND_JOIN,
+ SILC_STATUS_ERR_NO_SUCH_SERVER, 0,
+ 2, serv, strlen(serv));
+ } else {
+ silc_server_command_send_status_data(cmd, SILC_COMMAND_JOIN,
+ SILC_STATUS_ERR_NO_SUCH_CHANNEL, 0,
+ 2, tmp, tmp_len);
+ }
+ silc_server_command_free(cmd);
return;
}
- /* Process USERS command. */
- silc_server_command_users((void *)cmd);
-
- silc_free(buffer);
- silc_free(idp);
- silc_packet_context_free(packet);
+ /* Reprocess command */
+ SILC_LOG_DEBUG(("Reprocess JOIN after connecting to router"));
+ silc_server_command_join(cmd, NULL);
}
-/* Internal routine to join channel. The channel sent to this function
- has been either created or resolved from ID lists. This joins the sent
- client to the channel. */
+SILC_SERVER_CMD_FUNC(join)
+{
+ SilcServerCommandContext cmd = (SilcServerCommandContext)context;
+ SilcServer server = cmd->server;
+ SilcIDListData idata = silc_packet_get_context(cmd->sock);
+ unsigned char *auth, *cauth;
+ SilcUInt32 tmp_len, auth_len, cauth_len;
+ char *tmp, *channel_name, *channel_namec = NULL, *cipher, *hmac;
+ char parsed[256 + 1], serv[256 + 1];
+ SilcChannelEntry channel;
+ SilcUInt32 umode = 0;
+ SilcBool created = FALSE, create_key = TRUE;
+ SilcID id;
-static void silc_server_command_join_channel(SilcServer server,
- SilcServerCommandContext cmd,
- SilcChannelEntry channel,
- SilcClientID *client_id,
- int created,
- unsigned int umode)
+ SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_JOIN, cmd, 2, 7);
+
+ /* Get channel name */
+ tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
+ if (!tmp) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
+ SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
+ 0);
+ goto out;
+ }
+
+ /* Truncate over long channel names */
+ if (tmp_len > 256) {
+ tmp_len = 256;
+ tmp[tmp_len - 1] = '\0';
+ }
+
+ /* Parse server name from the channel name */
+ silc_parse_userfqdn(tmp, parsed, sizeof(parsed), serv,
+ sizeof(serv));
+ channel_name = parsed;
+
+ if (server->config->dynamic_server) {
+ /* If server name is not specified but local channels is FALSE then the
+ channel will be global, based on our router name. */
+ if (!serv[0] && !server->config->local_channels) {
+ if (!server->standalone) {
+ silc_snprintf(serv, sizeof(serv), server->router->server_name);
+ } else {
+ SilcServerConfigRouter *router;
+ router = silc_server_config_get_primary_router(server);
+ if (router) {
+ /* Create connection to primary router */
+ SILC_LOG_DEBUG(("Create dynamic connection to primary router %s:%d",
+ router->host, router->port));
+ silc_server_create_connection(server, FALSE, TRUE,
+ router->host, router->port,
+ silc_server_command_join_connected,
+ cmd);
+ return;
+ }
+ }
+ }
+
+ /* If server name is ours, ignore it. */
+ if (serv[0] && silc_utf8_strcasecmp(serv, server->server_name))
+ memset(serv, 0, sizeof(serv));
+
+ /* Create connection */
+ if (serv[0] && server->standalone) {
+ SilcServerConfigRouter *router;
+ router = silc_server_config_get_primary_router(server);
+ if (router) {
+ /* Create connection to primary router */
+ SILC_LOG_DEBUG(("Create dynamic connection to primary router %s:%d",
+ router->host, router->port));
+ silc_server_create_connection(server, FALSE, TRUE,
+ router->host, router->port,
+ silc_server_command_join_connected, cmd);
+ return;
+ }
+ }
+ }
+
+ /* Check for valid channel name. This is cached, the original is saved
+ in the channel context. */
+ channel_namec = silc_channel_name_check(channel_name, strlen(channel_name),
+ SILC_STRING_UTF8, 256, NULL);
+ if (!channel_namec) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
+ SILC_STATUS_ERR_BAD_CHANNEL, 0);
+ goto out;
+ }
+
+ /* Get Client ID of the client who is joining to the channel */
+ if (!silc_argument_get_decoded(cmd->args, 2, SILC_ARGUMENT_ID, &id, NULL)) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
+ SILC_STATUS_ERR_NO_CLIENT_ID,
+ 0);
+ goto out;
+ }
+ tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
+
+ /* Get cipher, hmac name and auth payload */
+ cipher = silc_argument_get_arg_type(cmd->args, 4, NULL);
+ hmac = silc_argument_get_arg_type(cmd->args, 5, NULL);
+ auth = silc_argument_get_arg_type(cmd->args, 6, &auth_len);
+ cauth = silc_argument_get_arg_type(cmd->args, 7, &cauth_len);
+
+ /* See if the channel exists */
+ channel = silc_idlist_find_channel_by_name(server->local_list,
+ channel_namec, NULL);
+
+ if (idata->conn_type == SILC_CONN_CLIENT) {
+ SilcClientEntry entry = (SilcClientEntry)idata;
+ if (!entry) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
+ SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
+ 0);
+ goto out;
+ }
+
+#ifndef SILC_DIST_INPLACE
+ /* Limit how many channels client can join */
+ if (!cmd->pending && entry->channels &&
+ silc_hash_table_count(entry->channels) >=
+ server->config->param.chlimit) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
+ SILC_STATUS_ERR_RESOURCE_LIMIT,
+ 0);
+ goto out;
+ }
+#endif /* SILC_DIST_INPLACE */
+
+ if (!channel ||
+ (channel->disabled && server->server_type != SILC_ROUTER)) {
+ /* Channel not found or not valid */
+
+ /* If we are standalone server we don't have a router, we just create
+ the channel by ourselves (unless it existed). */
+ if (server->standalone) {
+ if (!channel) {
+ channel = silc_server_create_new_channel(server, server->id, cipher,
+ hmac, channel_name, TRUE);
+ if (!channel) {
+ if (cipher) {
+ silc_server_command_send_status_data(
+ cmd, SILC_COMMAND_JOIN,
+ SILC_STATUS_ERR_UNKNOWN_ALGORITHM,
+ 0, 2, cipher, strlen(cipher));
+ } else if (hmac) {
+ silc_server_command_send_status_data(
+ cmd, SILC_COMMAND_JOIN,
+ SILC_STATUS_ERR_UNKNOWN_ALGORITHM,
+ 0, 2, hmac, strlen(hmac));
+ } else {
+ silc_server_command_send_status_reply(
+ cmd, SILC_COMMAND_JOIN,
+ SILC_STATUS_ERR_RESOURCE_LIMIT,
+ 0);
+ }
+ goto out;
+ }
+
+ umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
+ created = TRUE;
+ create_key = FALSE;
+ }
+ } else {
+
+ /* The channel does not exist on our server. If we are normal server
+ we will send JOIN command to our router which will handle the
+ joining procedure (either creates the channel if it doesn't exist
+ or joins the client to it). */
+ if (server->server_type != SILC_ROUTER) {
+ SilcBuffer tmpbuf;
+ SilcUInt16 old_ident;
+
+ /* If this is pending command callback then we've resolved
+ it and it didn't work, return since we've notified the
+ client already in the command reply callback. */
+ if (cmd->pending)
+ goto out;
+
+ /* Statistics */
+ cmd->server->stat.commands_sent++;
+
+ old_ident = silc_command_get_ident(cmd->payload);
+ silc_command_set_ident(cmd->payload, ++server->cmd_ident);
+ tmpbuf = silc_command_payload_encode_payload(cmd->payload);
+
+ /* Send JOIN command to our router */
+ silc_server_packet_send(server, SILC_PRIMARY_ROUTE(server),
+ SILC_PACKET_COMMAND, cmd->packet->flags,
+ tmpbuf->data, silc_buffer_len(tmpbuf));
+
+ /* Reprocess this packet after received reply from router */
+ silc_server_command_pending(server, SILC_COMMAND_JOIN,
+ silc_command_get_ident(cmd->payload),
+ silc_server_command_join,
+ silc_server_command_dup(cmd));
+ cmd->pending = TRUE;
+ silc_command_set_ident(cmd->payload, old_ident);
+ silc_buffer_free(tmpbuf);
+ goto out;
+ }
+
+ /* We are router and the channel does not seem exist so we will check
+ our global list as well for the channel. */
+ channel = silc_idlist_find_channel_by_name(server->global_list,
+ channel_namec, NULL);
+ if (!channel) {
+ /* Channel really does not exist, create it */
+ channel = silc_server_create_new_channel(server, server->id, cipher,
+ hmac, channel_name, TRUE);
+ if (!channel) {
+ if (cipher) {
+ silc_server_command_send_status_data(
+ cmd, SILC_COMMAND_JOIN,
+ SILC_STATUS_ERR_UNKNOWN_ALGORITHM,
+ 0, 2, cipher, strlen(cipher));
+ } else if (hmac) {
+ silc_server_command_send_status_data(
+ cmd, SILC_COMMAND_JOIN,
+ SILC_STATUS_ERR_UNKNOWN_ALGORITHM,
+ 0, 2, hmac, strlen(hmac));
+ } else {
+ silc_server_command_send_status_reply(
+ cmd, SILC_COMMAND_JOIN,
+ SILC_STATUS_ERR_RESOURCE_LIMIT,
+ 0);
+ }
+ goto out;
+ }
+
+ umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
+ created = TRUE;
+ create_key = FALSE;
+ }
+ }
+ }
+ } else {
+ if (!channel) {
+ /* Channel not found */
+
+ /* If the command came from router and we are normal server then
+ something went wrong with the joining as the channel was not found.
+ We can't do anything else but ignore this. */
+ if (idata->conn_type == SILC_CONN_ROUTER ||
+ server->server_type != SILC_ROUTER)
+ goto out;
+
+ /* We are router and the channel does not seem exist so we will check
+ our global list as well for the channel. */
+ channel = silc_idlist_find_channel_by_name(server->global_list,
+ channel_namec, NULL);
+ if (!channel) {
+ /* Channel really does not exist, create it */
+ channel = silc_server_create_new_channel(server, server->id, cipher,
+ hmac, channel_name, TRUE);
+ if (!channel) {
+ if (cipher) {
+ silc_server_command_send_status_data(
+ cmd, SILC_COMMAND_JOIN,
+ SILC_STATUS_ERR_UNKNOWN_ALGORITHM,
+ 0, 2, cipher, strlen(cipher));
+ } else if (hmac) {
+ silc_server_command_send_status_data(
+ cmd, SILC_COMMAND_JOIN,
+ SILC_STATUS_ERR_UNKNOWN_ALGORITHM,
+ 0, 2, hmac, strlen(hmac));
+ } else {
+ silc_server_command_send_status_reply(
+ cmd, SILC_COMMAND_JOIN,
+ SILC_STATUS_ERR_RESOURCE_LIMIT,
+ 0);
+ }
+ goto out;
+ }
+
+ umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
+ created = TRUE;
+ create_key = FALSE;
+ }
+ }
+ }
+
+ /* Check whether the channel was created by our router */
+ if (cmd->pending && context2) {
+ SilcServerCommandReplyContext reply = context2;
+
+ if (silc_command_get(reply->payload) == SILC_COMMAND_JOIN) {
+ tmp = silc_argument_get_arg_type(reply->args, 6, NULL);
+ SILC_GET32_MSB(created, tmp);
+ if (silc_argument_get_arg_type(reply->args, 7, NULL))
+ create_key = FALSE; /* Router returned the key already */
+
+ if (silc_command_get_status(reply->payload, NULL, NULL) &&
+ channel->mode & SILC_CHANNEL_MODE_PASSPHRASE) {
+ /* Save channel passphrase, if user provided it successfully */
+ unsigned char *pa;
+ SilcUInt32 pa_len;
+ pa = silc_argument_get_arg_type(cmd->args, 3, &pa_len);
+ if (pa) {
+ silc_free(channel->passphrase);
+ channel->passphrase = silc_memdup(pa, pa_len);
+ }
+ }
+ }
+
+ if (silc_command_get(reply->payload) == SILC_COMMAND_WHOIS &&
+ !channel->disabled && !silc_hash_table_count(channel->user_list))
+ created = TRUE;
+ }
+
+ /* If the channel does not have global users and is also empty the client
+ will be the channel founder and operator. */
+ if (!channel->disabled &&
+ !channel->global_users && !silc_hash_table_count(channel->user_list))
+ umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
+
+ /* Join to the channel */
+ silc_server_command_join_channel(server, cmd, channel, SILC_ID_GET_ID(id),
+ created, create_key, umode,
+ auth, auth_len, cauth, cauth_len);
+
+ out:
+ silc_free(channel_namec);
+ silc_server_command_free(cmd);
+}
+
+/* Server side of command MOTD. Sends server's current "message of the
+ day" to the client. */
+
+SILC_SERVER_CMD_FUNC(motd)
{
- SilcSocketConnection sock = cmd->sock;
- unsigned char *tmp;
- unsigned int tmp_len;
- unsigned char *passphrase = NULL, mode[4], tmp2[4];
- SilcClientEntry client;
- SilcChannelClientEntry chl;
- SilcBuffer reply, chidp, clidp, keyp;
- unsigned short ident = silc_command_get_ident(cmd->payload);
+ SilcServerCommandContext cmd = (SilcServerCommandContext)context;
+ SilcServer server = cmd->server;
+ SilcBuffer idp;
+ char *motd, *dest_server = NULL;
+ SilcUInt32 motd_len;
+ SilcUInt16 ident = silc_command_get_ident(cmd->payload);
- SILC_LOG_DEBUG(("Start"));
+ SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_MOTD, cmd, 1, 1);
- if (!channel)
- return;
+ /* Get server name */
+ dest_server = silc_argument_get_arg_type(cmd->args, 1, NULL);
+ if (!dest_server) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_MOTD,
+ SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
+ 0);
+ goto out;
+ }
+
+ /* Check server name */
+ dest_server = silc_identifier_check(dest_server, strlen(dest_server),
+ SILC_STRING_UTF8, 256, NULL);
+ if (!dest_server) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_MOTD,
+ SILC_STATUS_ERR_BAD_SERVER,
+ 0);
+ goto out;
+ }
+
+ if (!memcmp(dest_server, server->server_name, strlen(dest_server))) {
+ /* Send our MOTD */
+
+ idp = silc_id_payload_encode(server->id_entry->id, SILC_ID_SERVER);
+
+ if (server->config && server->config->server_info &&
+ server->config->server_info->motd_file) {
+ /* Send motd */
+ motd = silc_file_readfile(server->config->server_info->motd_file,
+ &motd_len);
+ if (!motd) {
+ /* No motd */
+ silc_server_send_command_reply(server, cmd->sock, SILC_COMMAND_MOTD,
+ SILC_STATUS_OK, 0, ident, 1,
+ 2, idp->data, silc_buffer_len(idp));
+ goto out;
+ }
+
+ motd[motd_len] = 0;
+ silc_server_send_command_reply(server, cmd->sock, SILC_COMMAND_MOTD,
+ SILC_STATUS_OK, 0, ident, 2,
+ 2, idp->data, silc_buffer_len(idp),
+ 3, motd, motd_len);
+ } else {
+ /* No motd */
+ silc_server_send_command_reply(server, cmd->sock, SILC_COMMAND_MOTD,
+ SILC_STATUS_OK, 0, ident, 1,
+ 2, idp->data, silc_buffer_len(idp));
+ }
+ silc_buffer_free(idp);
+ } else {
+ SilcServerEntry entry;
+
+ /* Check whether we have this server cached */
+ entry = silc_idlist_find_server_by_name(server->global_list,
+ dest_server, TRUE, NULL);
+ if (!entry) {
+ entry = silc_idlist_find_server_by_name(server->local_list,
+ dest_server, TRUE, NULL);
+ }
+
+ if (server->server_type != SILC_SERVER && !cmd->pending &&
+ entry && !entry->motd) {
+ /* Send to the server */
+ SilcBuffer tmpbuf;
+ SilcUInt16 old_ident;
+
+ /* Statistics */
+ cmd->server->stat.commands_sent++;
+
+ old_ident = silc_command_get_ident(cmd->payload);
+ silc_command_set_ident(cmd->payload, ++server->cmd_ident);
+ tmpbuf = silc_command_payload_encode_payload(cmd->payload);
+
+ silc_server_packet_send(server, entry->connection,
+ SILC_PACKET_COMMAND, cmd->packet->flags,
+ tmpbuf->data, silc_buffer_len(tmpbuf));
+
+ /* Reprocess this packet after received reply from router */
+ silc_server_command_pending(server, SILC_COMMAND_MOTD,
+ silc_command_get_ident(cmd->payload),
+ silc_server_command_motd,
+ silc_server_command_dup(cmd));
+ cmd->pending = TRUE;
+ silc_command_set_ident(cmd->payload, old_ident);
+ silc_buffer_free(tmpbuf);
+ goto out;
+ }
+
+ /* Send to primary router only if we don't know the server
+ * the client requested or if the server is not locally connected */
+ if ((!entry || !(entry->data.status & SILC_IDLIST_STATUS_LOCAL))
+ && !cmd->pending && !server->standalone) {
+ /* Send to the primary router */
+ SilcBuffer tmpbuf;
+ SilcUInt16 old_ident;
+
+ /* Statistics */
+ cmd->server->stat.commands_sent++;
+
+ old_ident = silc_command_get_ident(cmd->payload);
+ silc_command_set_ident(cmd->payload, ++server->cmd_ident);
+ tmpbuf = silc_command_payload_encode_payload(cmd->payload);
+
+ silc_server_packet_send(server, SILC_PRIMARY_ROUTE(server),
+ SILC_PACKET_COMMAND, cmd->packet->flags,
+ tmpbuf->data, silc_buffer_len(tmpbuf));
+
+ /* Reprocess this packet after received reply from router */
+ silc_server_command_pending(server, SILC_COMMAND_MOTD,
+ silc_command_get_ident(cmd->payload),
+ silc_server_command_motd,
+ silc_server_command_dup(cmd));
+ cmd->pending = TRUE;
+ silc_command_set_ident(cmd->payload, old_ident);
+ silc_buffer_free(tmpbuf);
+ goto out;
+ }
+
+ if (!entry) {
+ silc_free(dest_server);
+ dest_server = silc_argument_get_arg_type(cmd->args, 1, NULL);
+ silc_server_command_send_status_data(cmd, SILC_COMMAND_MOTD,
+ SILC_STATUS_ERR_NO_SUCH_SERVER, 0,
+ 2, dest_server,
+ strlen(dest_server));
+ dest_server = NULL;
+ goto out;
+ }
+
+ idp = silc_id_payload_encode(entry->id, SILC_ID_SERVER);
+ silc_server_send_command_reply(server, cmd->sock, SILC_COMMAND_MOTD,
+ SILC_STATUS_OK, 0, ident, 2,
+ 2, idp->data, silc_buffer_len(idp),
+ 3, entry->motd,
+ entry->motd ?
+ strlen(entry->motd) : 0);
+ silc_buffer_free(idp);
+ }
+
+ out:
+ silc_free(dest_server);
+ silc_server_command_free(cmd);
+}
+
+/* Server side of command UMODE. Client can use this command to set/unset
+ user mode. Client actually cannot set itself to be as server/router
+ operator so this can be used only to unset the modes. */
+
+SILC_SERVER_CMD_FUNC(umode)
+{
+ SilcServerCommandContext cmd = (SilcServerCommandContext)context;
+ SilcServer server = cmd->server;
+ SilcClientEntry client = silc_packet_get_context(cmd->sock);
+ unsigned char *tmp_mask, m[4];
+ SilcUInt32 mask = 0;
+ SilcUInt16 ident = silc_command_get_ident(cmd->payload);
+ SilcBool set_mask = FALSE;
+
+ if (client->data.conn_type != SILC_CONN_CLIENT || !client)
+ goto out;
+
+ SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_UMODE, cmd, 1, 2);
+
+ /* Get the client's mode mask */
+ tmp_mask = silc_argument_get_arg_type(cmd->args, 2, NULL);
+ if (tmp_mask) {
+ SILC_GET32_MSB(mask, tmp_mask);
+ set_mask = TRUE;
+ }
+
+ if (set_mask) {
+ /* Check that mode changing is allowed. */
+ if (!silc_server_check_umode_rights(server, client, mask)) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_UMODE,
+ SILC_STATUS_ERR_PERM_DENIED, 0);
+ goto out;
+ }
- /* Get passphrase */
- tmp = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
- if (tmp) {
- passphrase = silc_calloc(tmp_len, sizeof(*passphrase));
- memcpy(passphrase, tmp, tmp_len);
+ /* Anonymous mode cannot be set by client */
+ if (mask & SILC_UMODE_ANONYMOUS &&
+ !(client->mode & SILC_UMODE_ANONYMOUS)) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_UMODE,
+ SILC_STATUS_ERR_PERM_DENIED, 0);
+ goto out;
+ }
+
+ /* Update statistics */
+ if (mask & SILC_UMODE_GONE) {
+ if (!(client->mode & SILC_UMODE_GONE))
+ server->stat.my_aways++;
+ } else {
+ if (client->mode & SILC_UMODE_GONE)
+ server->stat.my_aways--;
+ }
+
+ /* If the client has anonymous mode set, preserve it. */
+ if (client->mode & SILC_UMODE_ANONYMOUS)
+ mask |= SILC_UMODE_ANONYMOUS;
+
+ /* Change the mode */
+ client->mode = mask;
+
+ /* Send UMODE change to primary router */
+ silc_server_send_notify_umode(server, SILC_PRIMARY_ROUTE(server),
+ SILC_BROADCAST(server), client->id,
+ client->mode);
+
+ /* Check if anyone is watching this nickname */
+ if (server->server_type == SILC_ROUTER)
+ silc_server_check_watcher_list(server, client, NULL,
+ SILC_NOTIFY_TYPE_UMODE_CHANGE);
+ }
+
+ /* Send command reply to sender */
+ SILC_PUT32_MSB(client->mode, m);
+ silc_server_send_command_reply(server, cmd->sock, SILC_COMMAND_UMODE,
+ SILC_STATUS_OK, 0, ident, 1,
+ 2, m, sizeof(m));
+
+ out:
+ silc_server_command_free(cmd);
+}
+
+/* Server side command of CMODE. Changes channel mode */
+
+SILC_SERVER_CMD_FUNC(cmode)
+{
+ SilcServerCommandContext cmd = (SilcServerCommandContext)context;
+ SilcServer server = cmd->server;
+ SilcClientEntry client = silc_packet_get_context(cmd->sock);
+ SilcIDListData idata = (SilcIDListData)client;
+ SilcID id;
+ SilcChannelEntry channel;
+ SilcChannelClientEntry chl;
+ SilcBuffer cidp;
+ unsigned char *tmp, *tmp_id, *tmp_mask, *chpkdata = NULL;
+ char *cipher = NULL, *hmac = NULL, *passphrase = NULL, ulimit[4];
+ SilcUInt32 mode_mask = 0, old_mask = 0, tmp_len, tmp_len2, chpklen;
+ SilcUInt16 ident = silc_command_get_ident(cmd->payload);
+ SilcBool set_mask = FALSE, set_chpk = FALSE;
+ SilcPublicKey founder_key = NULL;
+ SilcBuffer fkey = NULL, chpklist = NULL;
+ SilcBufferStruct chpk;
+
+ if (!client) {
+ silc_server_command_free(cmd);
+ return;
+ }
+
+ SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_CMODE, cmd, 1, 9);
+
+ /* Get Channel ID */
+ if (!silc_argument_get_decoded(cmd->args, 1, SILC_ARGUMENT_ID, &id, NULL)) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
+ SILC_STATUS_ERR_NO_CHANNEL_ID, 0);
+ silc_server_command_free(cmd);
+ return;
+ }
+
+ /* Get channel entry */
+ channel = silc_idlist_find_channel_by_id(server->local_list,
+ SILC_ID_GET_ID(id), NULL);
+ if (!channel) {
+ channel = silc_idlist_find_channel_by_id(server->global_list,
+ SILC_ID_GET_ID(id), NULL);
+ if (!channel) {
+ tmp_id = silc_argument_get_arg_type(cmd->args, 1, &tmp_len2);
+ silc_server_command_send_status_data(cmd, SILC_COMMAND_CMODE,
+ SILC_STATUS_ERR_NO_SUCH_CHANNEL_ID,
+ 0, 2, tmp_id, tmp_len2);
+ silc_server_command_free(cmd);
+ return;
+ }
+ }
+ old_mask = channel->mode;
+
+ /* Get the channel mode mask */
+ tmp_mask = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
+ if (tmp_mask) {
+ SILC_GET32_MSB(mode_mask, tmp_mask);
+ set_mask = TRUE;
+ }
+
+ /* Check whether this client is on the channel */
+ if (!silc_server_client_on_channel(client, channel, &chl)) {
+ tmp_id = silc_argument_get_arg_type(cmd->args, 1, &tmp_len2);
+ silc_server_command_send_status_data(cmd, SILC_COMMAND_CMODE,
+ SILC_STATUS_ERR_NOT_ON_CHANNEL, 0,
+ 2, tmp_id, tmp_len2);
+ goto out;
+ }
+
+ /* Check that client has rights to change any requested channel modes */
+ if (set_mask && !silc_server_check_cmode_rights(server, channel, chl,
+ mode_mask)) {
+ SILC_LOG_DEBUG(("Client does not have rights to change mode"));
+ tmp_id = silc_argument_get_arg_type(cmd->args, 1, &tmp_len2);
+ silc_server_command_send_status_data(
+ cmd, SILC_COMMAND_CMODE,
+ (!(chl->mode & SILC_CHANNEL_UMODE_CHANOP) ?
+ SILC_STATUS_ERR_NO_CHANNEL_PRIV :
+ SILC_STATUS_ERR_NO_CHANNEL_FOPRIV), 0,
+ 2, tmp_id, tmp_len2);
+ goto out;
+ }
+
+ /* If mode mask was not sent as argument then merely return the current
+ mode mask, founder key and channel public key list to the sender. */
+ if (!set_mask) {
+ unsigned char m[4];
+ SILC_PUT32_MSB(channel->mode, m);
+ if (channel->founder_key)
+ fkey = silc_public_key_payload_encode(channel->founder_key);
+ if (channel->channel_pubkeys)
+ chpklist = silc_server_get_channel_pk_list(server, channel,
+ FALSE, FALSE);
+ tmp_id = silc_argument_get_arg_type(cmd->args, 1, &tmp_len2);
+ silc_server_send_command_reply(server, cmd->sock, SILC_COMMAND_CMODE,
+ SILC_STATUS_OK, 0, ident, 4,
+ 2, tmp_id, tmp_len2,
+ 3, m, sizeof(m),
+ 4, fkey ? fkey->data : NULL,
+ fkey ? silc_buffer_len(fkey) : 0,
+ 5, chpklist ? chpklist->data : NULL,
+ chpklist ? silc_buffer_len(chpklist) : 0);
+ goto out;
+ }
+
+ /*
+ * Check the modes. Modes that requires nothing special operation are
+ * not checked here.
+ */
+
+ if (mode_mask & SILC_CHANNEL_MODE_PRIVKEY) {
+ /* Channel uses private keys to protect traffic. Client(s) has set the
+ key locally they want to use, server does not know that key. */
+ /* Nothing interesting to do here */
+ } else {
+ if (channel->mode & SILC_CHANNEL_MODE_PRIVKEY) {
+ /* The mode is removed and we need to generate and distribute
+ new channel key. Clients are not using private channel keys
+ anymore after this. */
+
+ /* if we don't remove the flag from the mode
+ * silc_server_create_channel_key won't create a new key */
+ channel->mode &= ~SILC_CHANNEL_MODE_PRIVKEY;
+
+ /* Re-generate channel key */
+ if (!silc_server_create_channel_key(server, channel, 0))
+ goto out;
+
+ /* Send the channel key. This sends it to our local clients and if
+ we are normal server to our router as well. */
+ silc_server_send_channel_key(server, NULL, channel,
+ server->server_type == SILC_ROUTER ?
+ FALSE : !server->standalone);
+
+ cipher = (char *)silc_cipher_get_name(channel->send_key);
+ hmac = (char *)silc_hmac_get_name(channel->hmac);
+ }
+ }
+
+ if (mode_mask & SILC_CHANNEL_MODE_ULIMIT) {
+ /* User limit is set on channel */
+ SilcUInt32 user_limit;
+
+ /* Get user limit */
+ tmp = silc_argument_get_arg_type(cmd->args, 3, NULL);
+ if (!tmp) {
+ if (!(channel->mode & SILC_CHANNEL_MODE_ULIMIT)) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
+ SILC_STATUS_ERR_NOT_ENOUGH_PARAMS, 0);
+ goto out;
+ }
+ } else {
+ SILC_GET32_MSB(user_limit, tmp);
+ channel->user_limit = user_limit;
+ }
+ } else {
+ if (channel->mode & SILC_CHANNEL_MODE_ULIMIT)
+ /* User limit mode is unset. Remove user limit */
+ channel->user_limit = 0;
+ }
+
+ if (mode_mask & SILC_CHANNEL_MODE_PASSPHRASE) {
+ if (!(channel->mode & SILC_CHANNEL_MODE_PASSPHRASE)) {
+ /* Passphrase has been set to channel */
+
+ /* Get the passphrase */
+ tmp = silc_argument_get_arg_type(cmd->args, 4, NULL);
+ if (!tmp) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
+ SILC_STATUS_ERR_NOT_ENOUGH_PARAMS, 0);
+ goto out;
+ }
+
+ /* Save the passphrase */
+ passphrase = channel->passphrase = silc_memdup(tmp, strlen(tmp));
+ }
+ } else {
+ if (channel->mode & SILC_CHANNEL_MODE_PASSPHRASE) {
+ /* Passphrase mode is unset. remove the passphrase */
+ silc_free(channel->passphrase);
+ channel->passphrase = NULL;
+ }
+ }
+
+ if (mode_mask & SILC_CHANNEL_MODE_CIPHER) {
+ if (!(channel->mode & SILC_CHANNEL_MODE_CIPHER)) {
+ /* Cipher to use protect the traffic */
+ SilcCipher send_key, receive_key, olds, oldr;
+
+ /* Get cipher */
+ cipher = silc_argument_get_arg_type(cmd->args, 5, NULL);
+ if (!cipher) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
+ SILC_STATUS_ERR_NOT_ENOUGH_PARAMS, 0);
+ goto out;
+ }
+
+ /* Delete old cipher and allocate the new one */
+ if (!silc_cipher_alloc(cipher, &send_key)) {
+ silc_server_command_send_status_data(
+ cmd, SILC_COMMAND_CMODE,
+ SILC_STATUS_ERR_UNKNOWN_ALGORITHM, 0,
+ 2, cipher, strlen(cipher));
+ goto out;
+ }
+ if (!silc_cipher_alloc(cipher, &receive_key)) {
+ silc_server_command_send_status_data(
+ cmd, SILC_COMMAND_CMODE,
+ SILC_STATUS_ERR_UNKNOWN_ALGORITHM, 0,
+ 2, cipher, strlen(cipher));
+ goto out;
+ }
+
+ olds = channel->send_key;
+ oldr = channel->receive_key;
+ channel->send_key = send_key;
+ channel->receive_key = receive_key;
+
+ /* Re-generate channel key */
+ if (!silc_server_create_channel_key(server, channel, 0)) {
+ /* We don't have new key, revert to old one */
+ channel->send_key = olds;
+ channel->receive_key = oldr;
+ goto out;
+ }
+
+ /* Remove old channel key for good */
+ silc_cipher_free(olds);
+ silc_cipher_free(oldr);
+
+ /* Send the channel key. This sends it to our local clients and if
+ we are normal server to our router as well. */
+ silc_server_send_channel_key(server, NULL, channel,
+ server->server_type == SILC_ROUTER ?
+ FALSE : !server->standalone);
+ }
+ } else {
+ if (channel->mode & SILC_CHANNEL_MODE_CIPHER) {
+ /* Cipher mode is unset. Remove the cipher and revert back to
+ default cipher */
+ SilcCipher send_key, receive_key, olds, oldr;
+ cipher = channel->cipher;
+
+ /* Delete old cipher and allocate default one */
+ if (!silc_cipher_alloc(cipher ? cipher : SILC_DEFAULT_CIPHER,
+ &send_key)) {
+ silc_server_command_send_status_data(
+ cmd, SILC_COMMAND_CMODE,
+ SILC_STATUS_ERR_UNKNOWN_ALGORITHM, 0,
+ 2, cipher, strlen(cipher));
+ goto out;
+ }
+ if (!silc_cipher_alloc(cipher ? cipher : SILC_DEFAULT_CIPHER,
+ &receive_key)) {
+ silc_server_command_send_status_data(
+ cmd, SILC_COMMAND_CMODE,
+ SILC_STATUS_ERR_UNKNOWN_ALGORITHM, 0,
+ 2, cipher, strlen(cipher));
+ goto out;
+ }
+
+ olds = channel->send_key;
+ oldr = channel->receive_key;
+ channel->send_key = send_key;
+ channel->receive_key = receive_key;
+
+ /* Re-generate channel key */
+ if (!silc_server_create_channel_key(server, channel, 0)) {
+ /* We don't have new key, revert to old one */
+ channel->send_key = olds;
+ channel->receive_key = oldr;
+ goto out;
+ }
+
+ /* Remove old channel key for good */
+ silc_cipher_free(olds);
+ silc_cipher_free(oldr);
+
+ /* Send the channel key. This sends it to our local clients and if
+ we are normal server to our router as well. */
+ silc_server_send_channel_key(server, NULL, channel,
+ server->server_type == SILC_ROUTER ?
+ FALSE : !server->standalone);
+ }
+ }
+
+ if (mode_mask & SILC_CHANNEL_MODE_HMAC) {
+ if (!(channel->mode & SILC_CHANNEL_MODE_HMAC)) {
+ /* HMAC to use protect the traffic */
+ unsigned char hash[SILC_HASH_MAXLEN];
+ SilcHmac newhmac;
+
+ /* Get hmac */
+ hmac = silc_argument_get_arg_type(cmd->args, 6, NULL);
+ if (!hmac) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
+ SILC_STATUS_ERR_NOT_ENOUGH_PARAMS, 0);
+ goto out;
+ }
+
+ /* Delete old hmac and allocate the new one */
+ if (!silc_hmac_alloc(hmac, NULL, &newhmac)) {
+ silc_server_command_send_status_data(
+ cmd, SILC_COMMAND_CMODE,
+ SILC_STATUS_ERR_UNKNOWN_ALGORITHM, 0,
+ 2, hmac, strlen(hmac));
+ goto out;
+ }
+
+ silc_hmac_free(channel->hmac);
+ channel->hmac = newhmac;
+
+ /* Set the HMAC key out of current channel key. The client must do
+ this locally. */
+ silc_hash_make(silc_hmac_get_hash(channel->hmac), channel->key,
+ channel->key_len / 8, hash);
+ silc_hmac_set_key(channel->hmac, hash,
+ silc_hash_len(silc_hmac_get_hash(channel->hmac)));
+ memset(hash, 0, sizeof(hash));
+ }
+ } else {
+ if (channel->mode & SILC_CHANNEL_MODE_HMAC) {
+ /* Hmac mode is unset. Remove the hmac and revert back to
+ default hmac */
+ SilcHmac newhmac;
+ unsigned char hash[SILC_HASH_MAXLEN];
+ hmac = channel->hmac_name;
+
+ /* Delete old hmac and allocate default one */
+ if (!silc_hmac_alloc(hmac ? hmac : SILC_DEFAULT_HMAC, NULL, &newhmac)) {
+ silc_server_command_send_status_data(
+ cmd, SILC_COMMAND_CMODE,
+ SILC_STATUS_ERR_UNKNOWN_ALGORITHM, 0,
+ 2, hmac, strlen(hmac));
+ goto out;
+ }
+
+ silc_hmac_free(channel->hmac);
+ channel->hmac = newhmac;
+
+ /* Set the HMAC key out of current channel key. The client must do
+ this locally. */
+ silc_hash_make(silc_hmac_get_hash(channel->hmac), channel->key,
+ channel->key_len / 8,
+ hash);
+ silc_hmac_set_key(channel->hmac, hash,
+ silc_hash_len(silc_hmac_get_hash(channel->hmac)));
+ memset(hash, 0, sizeof(hash));
+ }
+ }
+
+ if (mode_mask & SILC_CHANNEL_MODE_FOUNDER_AUTH) {
+ if (chl->mode & SILC_CHANNEL_UMODE_CHANFO) {
+ /* Check if the founder public key was received */
+ founder_key = idata->public_key;
+ tmp = silc_argument_get_arg_type(cmd->args, 8, &tmp_len);
+ if (tmp) {
+ if (!silc_public_key_payload_decode(tmp, tmp_len, &founder_key)) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
+ SILC_STATUS_ERR_AUTH_FAILED,
+ 0);
+ goto out;
+ }
+ } else {
+ /* If key was not sent and the channel mode has already founder
+ then the key was not to be changed. */
+ if (channel->mode & SILC_CHANNEL_MODE_FOUNDER_AUTH)
+ goto has_founder;
+ }
+
+ /* Set the founder authentication */
+ tmp = silc_argument_get_arg_type(cmd->args, 7, &tmp_len);
+ if (!tmp) {
+ silc_server_command_send_status_reply(
+ cmd, SILC_COMMAND_CMODE,
+ SILC_STATUS_ERR_NOT_ENOUGH_PARAMS, 0);
+ goto out;
+ }
+
+ /* Verify the payload before setting the mode */
+ if (!silc_auth_verify_data(tmp, tmp_len, SILC_AUTH_PUBLIC_KEY,
+ founder_key, 0, server->sha1hash,
+ client->id, SILC_ID_CLIENT)) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
+ SILC_STATUS_ERR_AUTH_FAILED,
+ 0);
+ goto out;
+ }
+
+ /* Save the public key */
+ if (channel->founder_key)
+ silc_pkcs_public_key_free(channel->founder_key);
+ if (silc_argument_get_arg_type(cmd->args, 8, NULL))
+ channel->founder_key = founder_key;
+ else
+ channel->founder_key = silc_pkcs_public_key_copy(founder_key);
+ if (!channel->founder_key) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
+ SILC_STATUS_ERR_AUTH_FAILED,
+ 0);
+ goto out;
+ }
+
+ fkey = silc_public_key_payload_encode(channel->founder_key);
+ if (!fkey) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
+ SILC_STATUS_ERR_AUTH_FAILED,
+ 0);
+ silc_pkcs_public_key_free(channel->founder_key);
+ channel->founder_key = NULL;
+ goto out;
+ }
+ }
+ } else {
+ if (chl->mode & SILC_CHANNEL_UMODE_CHANFO) {
+ if (channel->mode & SILC_CHANNEL_MODE_FOUNDER_AUTH) {
+ if (channel->founder_key)
+ silc_pkcs_public_key_free(channel->founder_key);
+ channel->founder_key = NULL;
+ }
+ }
+ }
+ has_founder:
+
+ if (mode_mask & SILC_CHANNEL_MODE_CHANNEL_AUTH) {
+ if (chl->mode & SILC_CHANNEL_UMODE_CHANFO) {
+ SilcStatus st;
+
+ chpkdata = silc_argument_get_arg_type(cmd->args, 9, &chpklen);
+
+ if (!chpkdata && channel->mode & SILC_CHANNEL_MODE_CHANNEL_AUTH)
+ goto has_pk_list;
+
+ set_chpk = TRUE;
+
+ /* Process the channel public key(s) */
+ st = silc_server_set_channel_pk_list(server, NULL, channel,
+ chpkdata, chpklen);
+ if (st != SILC_STATUS_OK) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE, st, 0);
+ goto out;
+ }
+ }
+ } else {
+ if (chl->mode & SILC_CHANNEL_UMODE_CHANFO) {
+ if (channel->mode & SILC_CHANNEL_MODE_CHANNEL_AUTH) {
+ if (channel->channel_pubkeys)
+ silc_hash_table_free(channel->channel_pubkeys);
+ channel->channel_pubkeys = NULL;
+ set_chpk = TRUE;
+ }
+ }
+ }
+ has_pk_list:
+
+ /* Finally, set the mode */
+ old_mask = channel->mode = mode_mask;
+
+ /* Send CMODE_CHANGE notify. */
+ cidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
+ if (mode_mask & SILC_CHANNEL_MODE_ULIMIT)
+ SILC_PUT32_MSB(channel->user_limit, ulimit);
+ silc_server_send_notify_to_channel(server, NULL, channel, FALSE, TRUE,
+ SILC_NOTIFY_TYPE_CMODE_CHANGE, 8,
+ cidp->data, silc_buffer_len(cidp),
+ tmp_mask, 4,
+ cipher, cipher ? strlen(cipher) : 0,
+ hmac, hmac ? strlen(hmac) : 0,
+ passphrase, passphrase ?
+ strlen(passphrase) : 0,
+ fkey ? fkey->data : NULL,
+ fkey ? silc_buffer_len(fkey) : 0,
+ chpkdata ? chpkdata : NULL,
+ chpkdata ? chpklen : 0,
+ mode_mask & SILC_CHANNEL_MODE_ULIMIT ?
+ ulimit : NULL,
+ mode_mask & SILC_CHANNEL_MODE_ULIMIT ?
+ sizeof(ulimit) : 0);
+
+ /* Set CMODE notify type to network */
+ if (chpkdata && chpklen)
+ silc_buffer_set(&chpk, chpkdata, chpklen);
+ silc_server_send_notify_cmode(server, SILC_PRIMARY_ROUTE(server),
+ SILC_BROADCAST(server), channel,
+ mode_mask, client->id, SILC_ID_CLIENT,
+ cipher, hmac, passphrase, founder_key,
+ chpkdata ? &chpk : NULL);
+
+ if (set_chpk)
+ chpklist = silc_server_get_channel_pk_list(server, channel, FALSE, FALSE);
+
+ /* Send command reply to sender */
+ tmp_id = silc_argument_get_arg_type(cmd->args, 1, &tmp_len2);
+ silc_server_send_command_reply(server, cmd->sock, SILC_COMMAND_CMODE,
+ SILC_STATUS_OK, 0, ident, 5,
+ 2, tmp_id, tmp_len2,
+ 3, tmp_mask, 4,
+ 4, fkey ? fkey->data : NULL,
+ fkey ? silc_buffer_len(fkey) : 0,
+ 5, chpklist ? chpklist->data :
+ NULL, chpklist ? silc_buffer_len(chpklist)
+ : 0,
+ 6, (mode_mask &
+ SILC_CHANNEL_MODE_ULIMIT ?
+ ulimit : NULL),
+ (mode_mask &
+ SILC_CHANNEL_MODE_ULIMIT ?
+ sizeof(ulimit) : 0));
+ silc_buffer_free(cidp);
+
+ out:
+ channel->mode = old_mask;
+ silc_buffer_free(chpklist);
+ silc_buffer_free(fkey);
+ silc_server_command_free(cmd);
+}
+
+/* Server side of CUMODE command. Changes client's mode on a channel. */
+
+SILC_SERVER_CMD_FUNC(cumode)
+{
+ SilcServerCommandContext cmd = (SilcServerCommandContext)context;
+ SilcServer server = cmd->server;
+ SilcClientEntry client = silc_packet_get_context(cmd->sock);
+ SilcID id, id2;
+ SilcChannelEntry channel;
+ SilcClientEntry target_client;
+ SilcChannelClientEntry chl;
+ SilcBuffer idp;
+ unsigned char *tmp_id, *tmp_ch_id, *tmp_mask;
+ SilcUInt32 target_mask, sender_mask = 0, tmp_len, tmp_ch_len;
+ int notify = FALSE;
+ SilcUInt16 ident = silc_command_get_ident(cmd->payload);
+ SilcPublicKey founder_key = NULL;
+ SilcBuffer fkey = NULL;
+
+ if (!client)
+ goto out;
+
+ SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_CUMODE, cmd, 3, 4);
+
+ /* Get Channel ID */
+ if (!silc_argument_get_decoded(cmd->args, 1, SILC_ARGUMENT_ID, &id, NULL)) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
+ SILC_STATUS_ERR_NO_CHANNEL_ID, 0);
+ goto out;
+ }
+
+ /* Get channel entry */
+ channel = silc_idlist_find_channel_by_id(server->local_list,
+ SILC_ID_GET_ID(id), NULL);
+ if (!channel) {
+ channel = silc_idlist_find_channel_by_id(server->global_list,
+ SILC_ID_GET_ID(id), NULL);
+ if (!channel) {
+ tmp_ch_id = silc_argument_get_arg_type(cmd->args, 1, &tmp_ch_len);
+ silc_server_command_send_status_data(cmd, SILC_COMMAND_CUMODE,
+ SILC_STATUS_ERR_NO_SUCH_CHANNEL_ID,
+ 0, 2, tmp_ch_id, tmp_ch_len);
+ goto out;
+ }
+ }
+
+ /* Check whether sender is on the channel */
+ if (!silc_server_client_on_channel(client, channel, &chl)) {
+ tmp_ch_id = silc_argument_get_arg_type(cmd->args, 1, &tmp_ch_len);
+ silc_server_command_send_status_data(cmd, SILC_COMMAND_CUMODE,
+ SILC_STATUS_ERR_NOT_ON_CHANNEL, 0,
+ 2, tmp_ch_id, tmp_ch_len);
+ goto out;
+ }
+ sender_mask = chl->mode;
+
+ /* Get the target client's channel mode mask */
+ tmp_mask = silc_argument_get_arg_type(cmd->args, 2, NULL);
+ if (!tmp_mask) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
+ SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
+ 0);
+ goto out;
+ }
+ SILC_GET32_MSB(target_mask, tmp_mask);
+
+ /* Get target Client ID */
+ if (!silc_argument_get_decoded(cmd->args, 3, SILC_ARGUMENT_ID, &id2, NULL)) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
+ SILC_STATUS_ERR_NO_CLIENT_ID, 0);
+ goto out;
+ }
+
+ /* Get target client's entry */
+ target_client = silc_idlist_find_client_by_id(server->local_list,
+ SILC_ID_GET_ID(id2),
+ TRUE, NULL);
+ if (!target_client)
+ target_client = silc_idlist_find_client_by_id(server->global_list,
+ SILC_ID_GET_ID(id2),
+ TRUE, NULL);
+
+ if (target_client != client &&
+ !(sender_mask & SILC_CHANNEL_UMODE_CHANFO) &&
+ !(sender_mask & SILC_CHANNEL_UMODE_CHANOP)) {
+ tmp_ch_id = silc_argument_get_arg_type(cmd->args, 1, &tmp_ch_len);
+ silc_server_command_send_status_data(cmd, SILC_COMMAND_CUMODE,
+ SILC_STATUS_ERR_NOT_YOU, 0,
+ 2, tmp_ch_id, tmp_ch_len);
+ goto out;
+ }
+
+ /* Check whether target client is on the channel */
+ if (target_client != client) {
+ if (!silc_server_client_on_channel(target_client, channel, &chl)) {
+ tmp_ch_id = silc_argument_get_arg_type(cmd->args, 1, &tmp_ch_len);
+ tmp_id = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
+ silc_server_command_send_status_data2(
+ cmd, SILC_COMMAND_CUMODE,
+ SILC_STATUS_ERR_USER_NOT_ON_CHANNEL, 0,
+ 2, tmp_id, tmp_len,
+ 3, tmp_ch_id, tmp_ch_len);
+ goto out;
+ }
+ }
+
+ /*
+ * Change the mode
+ */
+
+ /* If the target client is founder, no one else can change their mode
+ but themselves. */
+ if (chl->mode & SILC_CHANNEL_UMODE_CHANFO && client != target_client) {
+ tmp_ch_id = silc_argument_get_arg_type(cmd->args, 1, &tmp_ch_len);
+ silc_server_command_send_status_data(cmd, SILC_COMMAND_CUMODE,
+ SILC_STATUS_ERR_NO_CHANNEL_FOPRIV,
+ 0, 2, tmp_ch_id, tmp_ch_len);
+ goto out;
+ }
+
+ if (target_mask & SILC_CHANNEL_UMODE_CHANFO) {
+ if (target_client != client) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
+ SILC_STATUS_ERR_NO_CHANNEL_FOPRIV,
+ 0);
+ goto out;
+ }
+
+ if (!(chl->mode & SILC_CHANNEL_UMODE_CHANFO)) {
+ /* The client tries to claim the founder rights. */
+ unsigned char *tmp_auth;
+ SilcUInt32 tmp_auth_len;
+ SilcChannelClientEntry chl2;
+ SilcHashTableList htl;
+
+ if (!(channel->mode & SILC_CHANNEL_MODE_FOUNDER_AUTH) ||
+ !channel->founder_key) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
+ SILC_STATUS_ERR_AUTH_FAILED, 0);
+ goto out;
+ }
+
+ tmp_auth = silc_argument_get_arg_type(cmd->args, 4, &tmp_auth_len);
+ if (!tmp_auth) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
+ SILC_STATUS_ERR_AUTH_FAILED, 0);
+ goto out;
+ }
+
+ /* Verify the authentication payload */
+ if (!silc_auth_verify_data(tmp_auth, tmp_auth_len, SILC_AUTH_PUBLIC_KEY,
+ channel->founder_key, 0, server->sha1hash,
+ client->id, SILC_ID_CLIENT)) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
+ SILC_STATUS_ERR_AUTH_FAILED, 0);
+ goto out;
+ }
+
+ notify = TRUE;
+ founder_key = channel->founder_key;
+ fkey = silc_public_key_payload_encode(founder_key);
+ if (!fkey) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
+ SILC_STATUS_ERR_AUTH_FAILED, 0);
+ goto out;
+ }
+
+ /* There cannot be anyone else as founder on the channel now. This
+ client is definitely the founder due to this authentication. This
+ is done only on router, not on server, since server cannot know
+ whether router will accept this mode change or not. XXX This
+ probably shouldn't be done anymore at all, may cause problems in
+ router-router connections too (maybe just AUTH_FAILED error should
+ be returned). -Pekka */
+ if (server->server_type == SILC_ROUTER) {
+ silc_hash_table_list(channel->user_list, &htl);
+ while (silc_hash_table_get(&htl, NULL, (void *)&chl2))
+ if (chl2->mode & SILC_CHANNEL_UMODE_CHANFO) {
+ chl2->mode &= ~SILC_CHANNEL_UMODE_CHANFO;
+ silc_server_force_cumode_change(server, NULL, channel, chl2,
+ chl2->mode);
+ break;
+ }
+ silc_hash_table_list_reset(&htl);
+ }
+
+ sender_mask = chl->mode |= SILC_CHANNEL_UMODE_CHANFO;
+ }
+ } else {
+ if (chl->mode & SILC_CHANNEL_UMODE_CHANFO) {
+ if (target_client == client) {
+ /* Remove channel founder rights from itself */
+ chl->mode &= ~SILC_CHANNEL_UMODE_CHANFO;
+ notify = TRUE;
+ } else {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
+ SILC_STATUS_ERR_NOT_YOU, 0);
+ goto out;
+ }
+ }
}
-
- /*
- * Check channel modes
- */
- /* Check invite list if channel is invite-only channel */
- if (channel->mode & SILC_CHANNEL_MODE_INVITE) {
- if (channel->mode & SILC_CHANNEL_MODE_INVITE_LIST) {
- /* Invite list is specified. Check whether client is invited in the
- list. If not, then check whether it has been invited otherwise. */
+ if (target_mask & SILC_CHANNEL_UMODE_CHANOP) {
+ /* Promote to operator */
+ if (!(chl->mode & SILC_CHANNEL_UMODE_CHANOP)) {
+ if (!(sender_mask & SILC_CHANNEL_UMODE_CHANOP) &&
+ !(sender_mask & SILC_CHANNEL_UMODE_CHANFO)) {
+ tmp_ch_id = silc_argument_get_arg_type(cmd->args, 1, &tmp_ch_len);
+ silc_server_command_send_status_data(cmd, SILC_COMMAND_CUMODE,
+ SILC_STATUS_ERR_NO_CHANNEL_PRIV,
+ 0, 2, tmp_ch_id, tmp_ch_len);
+ goto out;
+ }
- } else {
- /* XXX client must be invited to be able to join the channel */
+ chl->mode |= SILC_CHANNEL_UMODE_CHANOP;
+ notify = TRUE;
}
- }
-
- /* Check ban list if set */
- if (channel->mode & SILC_CHANNEL_MODE_BAN) {
+ } else {
+ if (chl->mode & SILC_CHANNEL_UMODE_CHANOP) {
+ if (!(sender_mask & SILC_CHANNEL_UMODE_CHANOP) &&
+ !(sender_mask & SILC_CHANNEL_UMODE_CHANFO)) {
+ tmp_ch_id = silc_argument_get_arg_type(cmd->args, 1, &tmp_ch_len);
+ silc_server_command_send_status_data(cmd, SILC_COMMAND_CUMODE,
+ SILC_STATUS_ERR_NO_CHANNEL_PRIV,
+ 0, 2, tmp_ch_id, tmp_ch_len);
+ goto out;
+ }
+ /* Demote to normal user */
+ chl->mode &= ~SILC_CHANNEL_UMODE_CHANOP;
+ notify = TRUE;
+ }
}
- /* Check the channel passphrase if set. */
- if (channel->mode & SILC_CHANNEL_MODE_PASSPHRASE) {
- if (!passphrase || memcmp(channel->mode_data.passphrase, passphrase,
- strlen(channel->mode_data.passphrase))) {
- silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
- SILC_STATUS_ERR_BAD_PASSWORD);
+ if (target_mask & SILC_CHANNEL_UMODE_BLOCK_MESSAGES) {
+ if (target_client != client) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
+ SILC_STATUS_ERR_NOT_YOU, 0);
goto out;
}
- }
- /* Check user count limit if set. */
- if (channel->mode & SILC_CHANNEL_MODE_ULIMIT) {
- if (silc_list_count(channel->user_list) + 1 >
- channel->mode_data.user_limit) {
- silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
- SILC_STATUS_ERR_CHANNEL_IS_FULL);
- goto out;
+ if (!(chl->mode & SILC_CHANNEL_UMODE_BLOCK_MESSAGES)) {
+ chl->mode |= SILC_CHANNEL_UMODE_BLOCK_MESSAGES;
+ notify = TRUE;
+ }
+ } else {
+ if (chl->mode & SILC_CHANNEL_UMODE_BLOCK_MESSAGES) {
+ if (target_client != client) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
+ SILC_STATUS_ERR_NOT_YOU, 0);
+ goto out;
+ }
+
+ chl->mode &= ~SILC_CHANNEL_UMODE_BLOCK_MESSAGES;
+ notify = TRUE;
}
}
- /*
- * Client is allowed to join to the channel. Make it happen.
- */
+ if (target_mask & SILC_CHANNEL_UMODE_BLOCK_MESSAGES_USERS) {
+ if (target_client != client) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
+ SILC_STATUS_ERR_NOT_YOU, 0);
+ goto out;
+ }
- /* Get the client entry */
- if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT) {
- client = (SilcClientEntry)sock->user_data;
+ if (!(chl->mode & SILC_CHANNEL_UMODE_BLOCK_MESSAGES_USERS)) {
+ chl->mode |= SILC_CHANNEL_UMODE_BLOCK_MESSAGES_USERS;
+ notify = TRUE;
+ }
} else {
- client = silc_idlist_find_client_by_id(server->local_list, client_id,
- NULL);
- if (!client) {
- /* XXX actually this is useless since router finds always cell's
- local clients from its local lists. */
- client = silc_idlist_find_client_by_id(server->global_list, client_id,
- NULL);
- if (!client)
+ if (chl->mode & SILC_CHANNEL_UMODE_BLOCK_MESSAGES_USERS) {
+ if (target_client != client) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
+ SILC_STATUS_ERR_NOT_YOU, 0);
goto out;
- }
- }
+ }
- /* Check whether the client already is on the channel */
- if (silc_server_client_on_channel(client, channel)) {
- silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
- SILC_STATUS_ERR_USER_ON_CHANNEL);
- goto out;
+ chl->mode &= ~SILC_CHANNEL_UMODE_BLOCK_MESSAGES_USERS;
+ notify = TRUE;
+ }
}
- /* Generate new channel key as protocol dictates */
- if (!created || !channel->channel_key)
- silc_server_create_channel_key(server, channel, 0);
-
- /* Send the channel key. This is broadcasted to the channel but is not
- sent to the client who is joining to the channel. */
- silc_server_send_channel_key(server, channel,
- server->server_type == SILC_ROUTER ?
- FALSE : server->standalone);
+ if (target_mask & SILC_CHANNEL_UMODE_BLOCK_MESSAGES_ROBOTS) {
+ if (target_client != client) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
+ SILC_STATUS_ERR_NOT_YOU, 0);
+ goto out;
+ }
- /* Join the client to the channel by adding it to channel's user list.
- Add also the channel to client entry's channels list for fast cross-
- referencing. */
- chl = silc_calloc(1, sizeof(*chl));
- chl->mode = umode;
- chl->client = client;
- chl->channel = channel;
- silc_list_add(channel->user_list, chl);
- silc_list_add(client->channels, chl);
+ if (!(chl->mode & SILC_CHANNEL_UMODE_BLOCK_MESSAGES_ROBOTS)) {
+ chl->mode |= SILC_CHANNEL_UMODE_BLOCK_MESSAGES_ROBOTS;
+ notify = TRUE;
+ }
+ } else {
+ if (chl->mode & SILC_CHANNEL_UMODE_BLOCK_MESSAGES_ROBOTS) {
+ if (target_client != client) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
+ SILC_STATUS_ERR_NOT_YOU, 0);
+ goto out;
+ }
- /* Encode Client ID Payload of the original client who wants to join */
- clidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
+ chl->mode &= ~SILC_CHANNEL_UMODE_BLOCK_MESSAGES_ROBOTS;
+ notify = TRUE;
+ }
+ }
- /* Encode command reply packet */
- chidp = silc_id_payload_encode(channel->id, SILC_ID_CHANNEL);
- SILC_PUT32_MSB(channel->mode, mode);
- SILC_PUT32_MSB(created, tmp2);
- tmp = silc_id_id2str(channel->id, SILC_ID_CHANNEL);
- keyp = silc_channel_key_payload_encode(SILC_ID_CHANNEL_LEN, tmp,
- SILC_ID_CHANNEL_LEN,
- channel->channel_key->cipher->name,
- channel->key_len / 8, channel->key);
- silc_free(tmp);
- if (!channel->topic) {
- reply =
- silc_command_reply_payload_encode_va(SILC_COMMAND_JOIN,
- SILC_STATUS_OK, ident, 5,
- 2, channel->channel_name,
- strlen(channel->channel_name),
- 3, chidp->data, chidp->len,
- 4, mode, 4,
- 5, tmp2, 4,
- 6, keyp->data, keyp->len);
+ if (target_mask & SILC_CHANNEL_UMODE_QUIET) {
+ if (!(chl->mode & SILC_CHANNEL_UMODE_QUIET)) {
+ if (client == target_client) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
+ SILC_STATUS_ERR_PERM_DENIED, 0);
+ goto out;
+ }
+ chl->mode |= SILC_CHANNEL_UMODE_QUIET;
+ notify = TRUE;
+ }
} else {
- reply =
- silc_command_reply_payload_encode_va(SILC_COMMAND_JOIN,
- SILC_STATUS_OK, ident, 6,
- 2, channel->channel_name,
- strlen(channel->channel_name),
- 3, chidp->data, chidp->len,
- 4, mode, 4,
- 5, tmp2, 4,
- 6, keyp->data, keyp->len,
- 8, channel->topic,
- strlen(channel->topic));
+ if (chl->mode & SILC_CHANNEL_UMODE_QUIET) {
+ if (client == target_client) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
+ SILC_STATUS_ERR_PERM_DENIED, 0);
+ goto out;
+ }
+ chl->mode &= ~SILC_CHANNEL_UMODE_QUIET;
+ notify = TRUE;
+ }
}
- /* Send command reply */
- silc_server_packet_send(server, sock, SILC_PACKET_COMMAND_REPLY, 0,
- reply->data, reply->len, FALSE);
-
- if (!cmd->pending) {
- /* Send JOIN notify to locally connected clients on the channel */
- silc_server_send_notify_to_channel(server, channel, FALSE,
- SILC_NOTIFY_TYPE_JOIN, 1,
- clidp->data, clidp->len);
+ idp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
+ tmp_id = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
+ tmp_ch_id = silc_argument_get_arg_type(cmd->args, 1, &tmp_ch_len);
- /* Send NEW_CHANNEL_USER packet to our primary router */
- if (!server->standalone)
- silc_server_send_new_channel_user(server, server->router->connection,
- server->server_type == SILC_SERVER ?
- FALSE : TRUE,
- channel->id, SILC_ID_CHANNEL_LEN,
- client->id, SILC_ID_CLIENT_LEN);
+ /* Send notify to channel, notify only if mode was actually changed. */
+ if (notify) {
+ silc_server_send_notify_to_channel(server, NULL, channel, FALSE, TRUE,
+ SILC_NOTIFY_TYPE_CUMODE_CHANGE, 4,
+ idp->data, silc_buffer_len(idp),
+ tmp_mask, 4,
+ tmp_id, tmp_len,
+ fkey ? fkey->data : NULL,
+ fkey ? silc_buffer_len(fkey) : 0);
+
+ /* Set CUMODE notify type to network */
+ silc_server_send_notify_cumode(server, SILC_PRIMARY_ROUTE(server),
+ SILC_BROADCAST(server), channel,
+ target_mask, client->id, SILC_ID_CLIENT,
+ target_client->id, founder_key);
}
- /* Send USERS command reply to the joined channel so the user sees who
- is currently on the channel. */
- silc_server_command_send_users(server, sock, channel, cmd->pending);
-
- silc_buffer_free(reply);
- silc_buffer_free(clidp);
- silc_buffer_free(chidp);
- silc_buffer_free(keyp);
+ /* Send command reply to sender */
+ silc_server_send_command_reply(server, cmd->sock, SILC_COMMAND_CUMODE,
+ SILC_STATUS_OK, 0, ident, 3,
+ 2, tmp_mask, 4,
+ 3, tmp_ch_id, tmp_ch_len,
+ 4, tmp_id, tmp_len);
+ silc_buffer_free(idp);
out:
- if (passphrase)
- silc_free(passphrase);
+ silc_buffer_free(fkey);
+ silc_server_command_free(cmd);
}
-/* Server side of command JOIN. Joins client into requested channel. If
- the channel does not exist it will be created. */
+/* Server side of KICK command. Kicks client out of channel. */
-SILC_SERVER_CMD_FUNC(join)
+SILC_SERVER_CMD_FUNC(kick)
{
SilcServerCommandContext cmd = (SilcServerCommandContext)context;
SilcServer server = cmd->server;
- int tmp_len;
- char *tmp, *channel_name = NULL, *cipher = NULL;
+ SilcClientEntry client = silc_packet_get_context(cmd->sock);
+ SilcClientEntry target_client;
+ SilcID id, id2;
SilcChannelEntry channel;
- unsigned int umode = 0;
- int created = FALSE;
- SilcClientID *client_id;
+ SilcChannelClientEntry chl;
+ SilcBuffer idp;
+ SilcUInt32 tmp_len, target_idp_len, clen;
+ SilcUInt16 ident = silc_command_get_ident(cmd->payload);
+ unsigned char *tmp, *comment, *target_idp;
+
+ if (!client)
+ goto out;
- SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_JOIN, cmd, 1, 4);
+ SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_LEAVE, cmd, 1, 3);
- /* Get channel name */
- tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
- if (!tmp) {
- silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
- SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
+ /* Get Channel ID */
+ if (!silc_argument_get_decoded(cmd->args, 1, SILC_ARGUMENT_ID, &id, NULL)) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
+ SILC_STATUS_ERR_NO_CHANNEL_ID, 0);
goto out;
}
- channel_name = tmp;
- if (silc_server_command_bad_chars(channel_name) == TRUE) {
- silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
- SILC_STATUS_ERR_BAD_CHANNEL);
- silc_free(channel_name);
- goto out;
+ /* Get channel entry */
+ channel = silc_idlist_find_channel_by_id(server->local_list,
+ SILC_ID_GET_ID(id), NULL);
+ if (!channel) {
+ channel = silc_idlist_find_channel_by_id(server->local_list,
+ SILC_ID_GET_ID(id), NULL);
+ if (!channel) {
+ tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
+ silc_server_command_send_status_data(cmd, SILC_COMMAND_KICK,
+ SILC_STATUS_ERR_NO_SUCH_CHANNEL_ID,
+ 0, 2, tmp, tmp_len);
+ goto out;
+ }
}
- /* Get Client ID of the client who is joining to the channel */
- tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
- if (!tmp) {
- silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
- SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
+ /* Check whether sender is on the channel */
+ if (!silc_server_client_on_channel(client, channel, &chl)) {
+ tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
+ silc_server_command_send_status_data(cmd, SILC_COMMAND_KICK,
+ SILC_STATUS_ERR_NOT_ON_CHANNEL,
+ 0, 2, tmp, tmp_len);
goto out;
}
- client_id = silc_id_payload_parse_id(tmp, tmp_len);
- if (!client_id)
+
+ /* Check that the kicker is channel operator or channel founder */
+ if (!(chl->mode & SILC_CHANNEL_UMODE_CHANOP) &&
+ !(chl->mode & SILC_CHANNEL_UMODE_CHANFO)) {
+ tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
+ silc_server_command_send_status_data(cmd, SILC_COMMAND_KICK,
+ SILC_STATUS_ERR_NO_CHANNEL_PRIV,
+ 0, 2, tmp, tmp_len);
goto out;
+ }
- /* Get cipher name */
- cipher = silc_argument_get_arg_type(cmd->args, 4, NULL);
+ /* Get target Client ID */
+ if (!silc_argument_get_decoded(cmd->args, 2, SILC_ARGUMENT_ID, &id2, NULL)) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_KICK,
+ SILC_STATUS_ERR_NO_CLIENT_ID, 0);
+ goto out;
+ }
- /* See if the channel exists */
- channel = silc_idlist_find_channel_by_name(server->local_list,
- channel_name, NULL);
-
- if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT) {
- /* If this is coming from client the Client ID in the command packet must
- be same as the client's ID. */
- if (cmd->sock->type == SILC_SOCKET_TYPE_CLIENT) {
- SilcClientEntry entry = (SilcClientEntry)cmd->sock->user_data;
- if (SILC_ID_CLIENT_COMPARE(entry->id, client_id)) {
- silc_server_command_send_status_reply(cmd, SILC_COMMAND_JOIN,
- SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
- goto out;
- }
- }
+ /* Get target client's entry */
+ target_client = silc_idlist_find_client_by_id(server->local_list,
+ SILC_ID_GET_ID(id2),
+ TRUE, NULL);
+ if (!target_client)
+ target_client = silc_idlist_find_client_by_id(server->global_list,
+ SILC_ID_GET_ID(id2),
+ TRUE, NULL);
- if (!channel) {
- /* Channel not found */
+ /* Check whether target client is on the channel */
+ if (!silc_server_client_on_channel(target_client, channel, &chl)) {
+ tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
+ target_idp = silc_argument_get_arg_type(cmd->args, 2, &target_idp_len);
+ silc_server_command_send_status_data2(cmd, SILC_COMMAND_KICK,
+ SILC_STATUS_ERR_USER_NOT_ON_CHANNEL,
+ 0, 2, target_idp, target_idp_len,
+ 3, tmp, tmp_len);
+ goto out;
+ }
- /* If we are standalone server we don't have a router, we just create
- the channel by ourselves. */
- if (server->standalone) {
- channel = silc_server_create_new_channel(server, server->id, cipher,
- channel_name);
- umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
- created = TRUE;
+ /* Check that the target client is not channel founder. Channel founder
+ cannot be kicked from the channel. */
+ if (chl->mode & SILC_CHANNEL_UMODE_CHANFO) {
+ tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
+ silc_server_command_send_status_data(cmd, SILC_COMMAND_KICK,
+ SILC_STATUS_ERR_NO_CHANNEL_FOPRIV,
+ 0, 2, tmp, tmp_len);
+ goto out;
+ }
- } else {
+ /* Get comment */
+ comment = silc_argument_get_arg_type(cmd->args, 3, &clen);
+ if (clen > 128)
+ comment = NULL;
- /* The channel does not exist on our server. If we are normal server
- we will send JOIN command to our router which will handle the
- joining procedure (either creates the channel if it doesn't exist
- or joins the client to it). */
- if (server->server_type == SILC_SERVER) {
- SilcBuffer tmpbuf;
- unsigned short old_ident;
-
- old_ident = silc_command_get_ident(cmd->payload);
- silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
- tmpbuf = silc_command_payload_encode_payload(cmd->payload);
-
- /* Send JOIN command to our router */
- silc_server_packet_send(server, (SilcSocketConnection)
- server->router->connection,
- SILC_PACKET_COMMAND, cmd->packet->flags,
- tmpbuf->data, tmpbuf->len, TRUE);
-
- /* Reprocess this packet after received reply from router */
- silc_server_command_pending(server, SILC_COMMAND_JOIN,
- silc_command_get_ident(cmd->payload),
- silc_server_command_join, context);
- cmd->pending = TRUE;
- return;
- }
-
- /* We are router and the channel does not seem exist so we will check
- our global list as well for the channel. */
- channel = silc_idlist_find_channel_by_name(server->global_list,
- channel_name, NULL);
- if (!channel) {
- /* Channel really does not exist, create it */
- channel = silc_server_create_new_channel(server, server->id, cipher,
- channel_name);
- umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
- created = TRUE;
- }
- }
- }
- } else {
- if (!channel) {
- /* Channel not found */
+ /* Send the reply back to the client */
+ tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
+ target_idp = silc_argument_get_arg_type(cmd->args, 2, &target_idp_len);
+ silc_server_send_command_reply(server, cmd->sock, SILC_COMMAND_KICK,
+ SILC_STATUS_OK, 0, ident, 2,
+ 2, tmp, tmp_len,
+ 3, target_idp, target_idp_len);
+
+ /* Send KICKED notify to local clients on the channel */
+ idp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
+ silc_server_send_notify_to_channel(server, NULL, channel, FALSE, TRUE,
+ SILC_NOTIFY_TYPE_KICKED, 3,
+ target_idp, target_idp_len,
+ comment, comment ? strlen(comment) : 0,
+ idp->data, silc_buffer_len(idp));
+ silc_buffer_free(idp);
- /* If the command came from router and/or we are normal server then
- something went wrong with the joining as the channel was not found.
- We can't do anything else but ignore this. */
- if (cmd->sock->type == SILC_SOCKET_TYPE_ROUTER ||
- server->server_type == SILC_SERVER)
- goto out;
-
- /* We are router and the channel does not seem exist so we will check
- our global list as well for the channel. */
- channel = silc_idlist_find_channel_by_name(server->global_list,
- channel_name, NULL);
- if (!channel) {
- /* Channel really does not exist, create it */
- channel = silc_server_create_new_channel(server, server->id, cipher,
- channel_name);
- umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
- created = TRUE;
- }
- }
+ /* Send KICKED notify to primary route */
+ silc_server_send_notify_kicked(server, SILC_PRIMARY_ROUTE(server),
+ SILC_BROADCAST(server), channel,
+ target_client->id, client->id, comment);
+
+ /* Remove the client from channel's invite list */
+ if (channel->invite_list && silc_hash_table_count(channel->invite_list)) {
+ SilcBuffer ab =
+ silc_argument_payload_encode_one(NULL, target_idp, target_idp_len, 3);
+ SilcArgumentPayload args =
+ silc_argument_payload_parse(ab->data, silc_buffer_len(ab), 1);
+
+ silc_server_inviteban_process(server, channel->invite_list, 1, args);
+ silc_buffer_free(ab);
+ silc_argument_payload_free(args);
}
- /* If the channel does not have global users and is also empty it means the
- channel was created globally (by our router) and the client will be the
- channel founder and operator. */
- if (!channel->global_users && silc_list_count(channel->user_list) == 0) {
- umode = (SILC_CHANNEL_UMODE_CHANOP | SILC_CHANNEL_UMODE_CHANFO);
- created = TRUE; /* Created globally by our router */
- }
+ /* Remove the client from the channel. If the channel does not exist
+ after removing the client then the client kicked itself off the channel
+ and we don't have to send anything after that. */
+ if (!silc_server_remove_from_one_channel(server, NULL, channel,
+ target_client, FALSE))
+ goto out;
- /* Join to the channel */
- silc_server_command_join_channel(server, cmd, channel, client_id,
- created, umode);
+ if (!(channel->mode & SILC_CHANNEL_MODE_PRIVKEY)) {
+ /* Re-generate channel key */
+ if (!silc_server_create_channel_key(server, channel, 0))
+ goto out;
- silc_free(client_id);
+ /* Send the channel key to the channel. The key of course is not sent
+ to the client who was kicked off the channel. */
+ silc_server_send_channel_key(server, target_client->connection, channel,
+ server->server_type == SILC_ROUTER ?
+ FALSE : !server->standalone);
+ }
out:
silc_server_command_free(cmd);
}
-/* Server side of command MOTD. Sends server's current "message of the
- day" to the client. */
+/* Server side of OPER command. Client uses this comand to obtain server
+ operator privileges to this server/router. */
-SILC_SERVER_CMD_FUNC(motd)
+SILC_SERVER_CMD_FUNC(oper)
{
SilcServerCommandContext cmd = (SilcServerCommandContext)context;
SilcServer server = cmd->server;
- char *motd;
- int motd_len;
-
- SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_MOTD, cmd, 1, 2);
+ SilcClientEntry client = silc_packet_get_context(cmd->sock);
+ unsigned char *username = NULL, *auth;
+ SilcUInt32 tmp_len;
+ SilcServerConfigAdmin *admin;
+ SilcIDListData idata = (SilcIDListData)client;
+ SilcBool result = FALSE;
+ SilcPublicKey cached_key;
+ const char *hostname, *ip;
+
+ if (client->data.conn_type != SILC_CONN_CLIENT || !client)
+ goto out;
+
+ SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_OPER, cmd, 1, 2);
- /* XXX show currently only our motd */
+ silc_socket_stream_get_info(silc_packet_stream_get_stream(cmd->sock),
+ NULL, &hostname, &ip, NULL);
+
+ /* Get the username */
+ username = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
+ if (!username) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_OPER,
+ SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
+ 0);
+ goto out;
+ }
- if (server->config && server->config->motd &&
- server->config->motd->motd_file) {
+ /* Check username */
+ username = silc_identifier_check(username, strlen(username),
+ SILC_STRING_UTF8, 128, &tmp_len);
+ if (!username) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_OPER,
+ SILC_STATUS_ERR_BAD_USERNAME,
+ 0);
+ goto out;
+ }
- /* Send motd */
- motd = silc_file_read(server->config->motd->motd_file, &motd_len);
- if (!motd)
+ /* Get the admin configuration */
+ admin = silc_server_config_find_admin(server, (char *)ip,
+ username, client->nickname);
+ if (!admin) {
+ admin = silc_server_config_find_admin(server, (char *)hostname,
+ username, client->nickname);
+ if (!admin) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_OPER,
+ SILC_STATUS_ERR_AUTH_FAILED,
+ 0);
+ SILC_LOG_INFO(("OPER authentication failed for username '%s' by "
+ "nickname '%s' from %s", username,
+ client->nickname, hostname));
goto out;
+ }
+ }
- motd[motd_len] = 0;
- silc_server_command_send_status_data(cmd, SILC_COMMAND_MOTD,
- SILC_STATUS_OK,
- 2, motd, motd_len);
+ /* Get the authentication payload */
+ auth = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
+ if (!auth) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_OPER,
+ SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
+ 0);
+ goto out;
+ }
+
+ /* Verify the authentication data. If both passphrase and public key
+ is set then try both of them. */
+ if (admin->passphrase)
+ result = silc_auth_verify_data(auth, tmp_len, SILC_AUTH_PASSWORD,
+ admin->passphrase, admin->passphrase_len,
+ idata->hash, client->id, SILC_ID_CLIENT);
+ if (!result && admin->publickeys) {
+ cached_key =
+ silc_server_get_public_key(server,
+ SILC_SKR_USAGE_SERVICE_AUTHORIZATION, admin);
+ if (!cached_key)
+ goto out;
+ result = silc_auth_verify_data(auth, tmp_len, SILC_AUTH_PUBLIC_KEY,
+ cached_key, 0, idata->hash,
+ client->id, SILC_ID_CLIENT);
+ }
+ if (!result) {
+ /* Authentication failed */
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_OPER,
+ SILC_STATUS_ERR_AUTH_FAILED,
+ 0);
goto out;
- } else {
- /* No motd */
- silc_server_command_send_status_reply(cmd, SILC_COMMAND_MOTD,
- SILC_STATUS_OK);
}
+ /* Client is now server operator */
+ client->mode |= SILC_UMODE_SERVER_OPERATOR;
+
+ /* Update statistics */
+ if (SILC_IS_LOCAL(client))
+ server->stat.my_server_ops++;
+ if (server->server_type == SILC_ROUTER)
+ server->stat.server_ops++;
+
+ /* Send UMODE change to primary router */
+ silc_server_send_notify_umode(server, SILC_PRIMARY_ROUTE(server),
+ SILC_BROADCAST(server), client->id,
+ client->mode);
+
+ /* Check if anyone is watching this nickname */
+ if (server->server_type == SILC_ROUTER)
+ silc_server_check_watcher_list(server, client, NULL,
+ SILC_NOTIFY_TYPE_UMODE_CHANGE);
+
+ /* Send reply to the sender */
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_OPER,
+ SILC_STATUS_OK, 0);
+
out:
+ silc_free(username);
silc_server_command_free(cmd);
}
-SILC_SERVER_CMD_FUNC(umode)
+SILC_TASK_CALLBACK(silc_server_command_detach_cb)
{
-}
+ SilcServer server = app_context;
+ QuitInternal q = (QuitInternal)context;
+ SilcClientID *client_id = (SilcClientID *)q->sock;
+ SilcClientEntry client;
+ SilcPacketStream sock;
-/* Checks that client has rights to add or remove channel modes. If any
- of the checks fails FALSE is returned. */
+ client = silc_idlist_find_client_by_id(server->local_list, client_id,
+ TRUE, NULL);
+ if (client && client->connection) {
+ sock = client->connection;
-int silc_server_check_cmode_rights(SilcChannelEntry channel,
- SilcChannelClientEntry client,
- unsigned int mode)
+ /* Close the connection on our side */
+ client->router = NULL;
+ client->connection = NULL;
+ silc_server_close_connection(server, sock);
+ }
+
+ silc_free(client_id);
+ silc_free(q);
+}
+
+SILC_TASK_CALLBACK(silc_server_command_detach_timeout)
{
- int is_op = client->mode & SILC_CHANNEL_UMODE_CHANOP;
- int is_fo = client->mode & SILC_CHANNEL_UMODE_CHANFO;
+ SilcServer server = app_context;
+ QuitInternal q = (QuitInternal)context;
+ SilcClientID *client_id = (SilcClientID *)q->sock;
+ SilcClientEntry client;
- /* Check whether has rights to change anything */
- if (!is_op && !is_fo)
- return FALSE;
+ client = silc_idlist_find_client_by_id(server->local_list, client_id,
+ TRUE, NULL);
+ if (client && client->mode & SILC_UMODE_DETACHED) {
+ SILC_LOG_DEBUG(("Detach timeout"));
+ silc_server_free_client_data(server, NULL, client, TRUE,
+ "Detach timeout");
+ }
- /* Check whether has rights to change everything */
- if (is_op && is_fo)
- return TRUE;
+ silc_free(client_id);
+ silc_free(q);
+}
- /* We know that client is channel operator, check that they are not
- changing anything that requires channel founder rights. Rest of the
- modes are available automatically for channel operator. */
+/* Server side of DETACH command. Detached the client from the network
+ by closing the connection but preserving the session. */
- if (mode & SILC_CHANNEL_MODE_PRIVKEY) {
- if (is_op && !is_fo)
- return FALSE;
- } else {
- if (channel->mode & SILC_CHANNEL_MODE_PRIVKEY) {
- if (is_op && !is_fo)
- return FALSE;
- }
- }
-
- if (mode & SILC_CHANNEL_MODE_PASSPHRASE) {
- if (is_op && !is_fo)
- return FALSE;
- } else {
- if (channel->mode & SILC_CHANNEL_MODE_PASSPHRASE) {
- if (is_op && !is_fo)
- return FALSE;
- }
+SILC_SERVER_CMD_FUNC(detach)
+{
+ SilcServerCommandContext cmd = (SilcServerCommandContext)context;
+ SilcServer server = cmd->server;
+ SilcClientEntry client = silc_packet_get_context(cmd->sock);
+ QuitInternal q;
+
+ if (server->config->detach_disabled) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_DETACH,
+ SILC_STATUS_ERR_OPERATION_ALLOWED,
+ 0);
+ goto out;
}
- if (mode & SILC_CHANNEL_MODE_CIPHER) {
- if (is_op && !is_fo)
- return FALSE;
- } else {
- if (channel->mode & SILC_CHANNEL_MODE_CIPHER) {
- if (is_op && !is_fo)
- return FALSE;
- }
+ if (client->data.conn_type != SILC_CONN_CLIENT || !client)
+ goto out;
+
+ SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_DETACH, cmd, 0, 0);
+
+ /* Remove operator privileges, since the client may resume in some
+ other server which to it does not have operator privileges. */
+ SILC_OPER_STATS_UPDATE(client, server, SILC_UMODE_SERVER_OPERATOR);
+ SILC_OPER_STATS_UPDATE(client, router, SILC_UMODE_ROUTER_OPERATOR);
+
+ /* Send the user mode notify to notify that client is detached */
+ client->mode |= SILC_UMODE_DETACHED;
+ client->data.status &= ~SILC_IDLIST_STATUS_RESUMED;
+ client->data.status &= ~SILC_IDLIST_STATUS_NOATTR;
+ client->last_command = 0;
+ client->fast_command = 0;
+ silc_server_send_notify_umode(server, SILC_PRIMARY_ROUTE(server),
+ SILC_BROADCAST(server), client->id,
+ client->mode);
+ server->stat.my_detached++;
+
+ /* Check if anyone is watching this nickname */
+ if (server->server_type == SILC_ROUTER)
+ silc_server_check_watcher_list(server, client, NULL,
+ SILC_NOTIFY_TYPE_UMODE_CHANGE);
+
+ q = silc_calloc(1, sizeof(*q));
+ q->sock = silc_id_dup(client->id, SILC_ID_CLIENT);
+ silc_schedule_task_add_timeout(server->schedule,
+ silc_server_command_detach_cb,
+ q, 0, 200000);
+
+ if (server->config->detach_timeout) {
+ q = silc_calloc(1, sizeof(*q));
+ q->sock = silc_id_dup(client->id, SILC_ID_CLIENT);
+ silc_schedule_task_add_timeout(server->schedule,
+ silc_server_command_detach_timeout,
+ q, server->config->detach_timeout * 60, 0);
}
-
- return TRUE;
+
+ /* Send reply to the sender */
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_DETACH,
+ SILC_STATUS_OK, 0);
+
+ out:
+ silc_server_command_free(cmd);
}
-/* Server side command of CMODE. Changes channel mode */
+/* Server side of WATCH command. */
-SILC_SERVER_CMD_FUNC(cmode)
+SILC_SERVER_CMD_FUNC(watch)
{
SilcServerCommandContext cmd = (SilcServerCommandContext)context;
SilcServer server = cmd->server;
- SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
- SilcChannelID *channel_id;
- SilcChannelEntry channel;
- SilcChannelClientEntry chl;
- SilcBuffer packet, cidp;
- unsigned char *tmp, *tmp_id, *tmp_mask;
- unsigned int argc, mode_mask, tmp_len, tmp_len2;
-
- SILC_LOG_DEBUG(("Start"));
+ char *add_nick, *del_nick;
+ SilcUInt32 add_nick_len, del_nick_len, tmp_len, pk_len;
+ unsigned char hash[SILC_HASH_MAXLEN], *tmp, *pk, *nick;
+ SilcClientEntry client;
+ SilcID id;
+ SilcUInt16 old_ident;
- argc = silc_argument_get_arg_num(cmd->args);
- if (argc < 2) {
- silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
- SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
- goto out;
- }
- if (argc > 8) {
- silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
- SILC_STATUS_ERR_TOO_MANY_PARAMS);
- goto out;
- }
+ SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_WATCH, cmd, 1, 3);
- /* Get Channel ID */
- tmp_id = silc_argument_get_arg_type(cmd->args, 1, &tmp_len2);
- if (!tmp_id) {
- silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
- SILC_STATUS_ERR_NO_CHANNEL_ID);
- goto out;
- }
- channel_id = silc_id_payload_parse_id(tmp_id, tmp_len2);
+ if (server->server_type != SILC_ROUTER && !server->standalone) {
+ if (!cmd->pending) {
+ /* Send the command to router */
+ SilcBuffer tmpbuf;
- /* Get the channel mode mask */
- tmp_mask = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
- if (!tmp_mask) {
- silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
- SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
- goto out;
- }
- SILC_GET32_MSB(mode_mask, tmp_mask);
+ /* If backup receives this from primary, handle it locally */
+ if (server->server_type == SILC_BACKUP_ROUTER &&
+ cmd->sock == SILC_PRIMARY_ROUTE(server))
+ goto process_watch;
- /* Get channel entry */
- channel = silc_idlist_find_channel_by_id(server->local_list,
- channel_id, NULL);
- if (!channel) {
- silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
- SILC_STATUS_ERR_NO_SUCH_CHANNEL);
- goto out;
- }
+ SILC_LOG_DEBUG(("Forwarding WATCH to router"));
- /* Check whether this client is on the channel */
- if (!silc_server_client_on_channel(client, channel)) {
- silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
- SILC_STATUS_ERR_NOT_ON_CHANNEL);
- goto out;
- }
+ /* Statistics */
+ cmd->server->stat.commands_sent++;
- /* Get entry to the channel user list */
- silc_list_start(channel->user_list);
- while ((chl = silc_list_get(channel->user_list)) != SILC_LIST_END)
- if (chl->client == client)
- break;
+ old_ident = silc_command_get_ident(cmd->payload);
+ silc_command_set_ident(cmd->payload, ++server->cmd_ident);
+ tmpbuf = silc_command_payload_encode_payload(cmd->payload);
- /* Check that client has rights to change any requested channel modes */
- if (!silc_server_check_cmode_rights(channel, chl, mode_mask)) {
- silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
- SILC_STATUS_ERR_NO_CHANNEL_PRIV);
- goto out;
- }
+ silc_server_packet_send(server, SILC_PRIMARY_ROUTE(server),
+ SILC_PACKET_COMMAND, cmd->packet->flags,
+ tmpbuf->data, silc_buffer_len(tmpbuf));
- /*
- * Check the modes. Modes that requires nothing special operation are
- * not checked here.
- */
+ /* Reprocess this packet after received reply from router */
+ silc_server_command_pending(server, SILC_COMMAND_WATCH,
+ silc_command_get_ident(cmd->payload),
+ silc_server_command_watch,
+ silc_server_command_dup(cmd));
+ cmd->pending = TRUE;
+ silc_command_set_ident(cmd->payload, old_ident);
+ silc_buffer_free(tmpbuf);
+ goto out;
+ } else {
+ SilcServerCommandReplyContext reply = context2;
+ SilcStatus status;
- if (mode_mask & SILC_CHANNEL_MODE_PRIVKEY) {
- /* Channel uses private keys to protect traffic. Client(s) has set the
- key locally they want to use, server does not know that key. */
- /* Nothing interesting to do here now */
- } else {
- if (channel->mode & SILC_CHANNEL_MODE_PRIVKEY) {
- /* The mode is removed and we need to generate and distribute
- new channel key. Clients are not using private channel keys
- anymore after this. */
+ if (!reply)
+ goto out;
- /* XXX Duplicated code, make own function for this!! LEAVE uses this
- as well */
+ silc_command_get_status(reply->payload, &status, NULL);
- /* Re-generate channel key */
- silc_server_create_channel_key(server, channel, 0);
-
- /* Encode channel key payload to be distributed on the channel */
- packet =
- silc_channel_key_payload_encode(tmp_len2, tmp_id,
- strlen(channel->channel_key->
- cipher->name),
- channel->channel_key->cipher->name,
- channel->key_len / 8, channel->key);
-
- /* If we are normal server then we will send it to our router. If we
- are router we will send it to all local servers that has clients on
- the channel */
- if (server->server_type == SILC_SERVER) {
- if (!server->standalone)
- silc_server_packet_send(server,
- cmd->server->router->connection,
- SILC_PACKET_CHANNEL_KEY, 0, packet->data,
- packet->len, TRUE);
- } else {
-
- }
-
- /* Send to locally connected clients on the channel */
- silc_server_packet_send_local_channel(server, channel,
- SILC_PACKET_CHANNEL_KEY, 0,
- packet->data, packet->len, FALSE);
- silc_buffer_free(packet);
- }
- }
-
- if (mode_mask & SILC_CHANNEL_MODE_ULIMIT) {
- /* User limit is set on channel */
- unsigned int user_limit;
-
- /* Get user limit */
- tmp = silc_argument_get_arg_type(cmd->args, 3, NULL);
- if (!tmp) {
- if (!(channel->mode & SILC_CHANNEL_MODE_ULIMIT)) {
- silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
- SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
+ /* Backup router handles the WATCH command also. */
+ if (server->server_type != SILC_BACKUP_ROUTER ||
+ SILC_STATUS_IS_ERROR(status)) {
+ /* Received reply from router, just send same data to the client. */
+ SILC_LOG_DEBUG(("Received reply to WATCH from router"));
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_WATCH, status,
+ 0);
goto out;
}
- } else {
- SILC_GET32_MSB(user_limit, tmp);
- channel->mode_data.user_limit = user_limit;
}
- } else {
- if (channel->mode & SILC_CHANNEL_MODE_ULIMIT)
- /* User limit mode is unset. Remove user limit */
- channel->mode_data.user_limit = 0;
}
- if (mode_mask & SILC_CHANNEL_MODE_PASSPHRASE) {
- if (!(channel->mode & SILC_CHANNEL_MODE_PASSPHRASE)) {
- /* Passphrase has been set to channel */
-
- /* Get the passphrase */
- tmp = silc_argument_get_arg_type(cmd->args, 4, NULL);
- if (!tmp) {
- silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
- SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
- goto out;
- }
+ /* We are router and keep the watch list for local cell */
+ process_watch:
- /* Save the passphrase */
- channel->mode_data.passphrase = strdup(tmp);
- }
- } else {
- if (channel->mode & SILC_CHANNEL_MODE_PASSPHRASE) {
- /* Passphrase mode is unset. remove the passphrase */
- if (channel->mode_data.passphrase) {
- silc_free(channel->mode_data.passphrase);
- channel->mode_data.passphrase = NULL;
- }
+ /* Get the client ID */
+ if (!silc_argument_get_decoded(cmd->args, 1, SILC_ARGUMENT_ID, &id, NULL)) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_WATCH,
+ SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
+ 0);
+ goto out;
+ }
+
+ /* Get the client entry which must be in local list */
+ client = silc_idlist_find_client_by_id(server->local_list,
+ SILC_ID_GET_ID(id), TRUE, NULL);
+ if (!client) {
+ /* Backup checks global list also */
+ if (server->server_type == SILC_BACKUP_ROUTER)
+ client = silc_idlist_find_client_by_id(server->global_list,
+ SILC_ID_GET_ID(id), TRUE, NULL);
+ if (!client) {
+ tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
+ silc_server_command_send_status_data(cmd, SILC_COMMAND_WATCH,
+ SILC_STATUS_ERR_NO_SUCH_CLIENT_ID,
+ 0, 2, tmp, tmp_len);
+ goto out;
}
}
- if (mode_mask & SILC_CHANNEL_MODE_BAN) {
- if (!(channel->mode & SILC_CHANNEL_MODE_BAN)) {
- /* Ban list is specified for channel */
+ /* Take public key for watching by public key */
+ pk = silc_argument_get_arg_type(cmd->args, 4, &pk_len);
- /* Get ban list */
- tmp = silc_argument_get_arg_type(cmd->args, 5, NULL);
- if (!tmp) {
- silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
- SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
- goto out;
- }
+ /* Take nickname */
+ add_nick = silc_argument_get_arg_type(cmd->args, 2, &add_nick_len);
+ del_nick = silc_argument_get_arg_type(cmd->args, 3, &del_nick_len);
+ if (!add_nick && !del_nick && !pk) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_WATCH,
+ SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
+ 0);
+ goto out;
+ }
- /* XXX check that channel founder is not banned */
+ if (add_nick && add_nick_len > 128) {
+ add_nick_len = 128;
+ add_nick[add_nick_len - 1] = '\0';
+ }
+ if (del_nick && del_nick_len > 128) {
+ del_nick_len = 128;
+ del_nick[del_nick_len - 1] = '\0';
+ }
- /* Save the ban list */
- channel->mode_data.ban_list = strdup(tmp);
- }
- } else {
- if (channel->mode & SILC_CHANNEL_MODE_BAN) {
- /* Ban mode is unset. Remove the entire ban list */
- if (channel->mode_data.ban_list) {
- silc_free(channel->mode_data.ban_list);
- channel->mode_data.ban_list = NULL;
- }
+ /* Add new nickname to be watched in our cell */
+ if (add_nick) {
+ nick = silc_identifier_check(add_nick, add_nick_len, SILC_STRING_UTF8, 128,
+ &add_nick_len);
+ if (!nick) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_WATCH,
+ SILC_STATUS_ERR_BAD_NICKNAME, 0);
+ goto out;
}
- }
- if (mode_mask & SILC_CHANNEL_MODE_INVITE_LIST) {
- if (!(channel->mode & SILC_CHANNEL_MODE_INVITE_LIST)) {
- /* Invite list is specified for channel */
+ /* Hash the nick, we have the hash saved, not nicks because we can
+ do one to one mapping to the nick from Client ID hash this way. */
+ silc_hash_make(server->md5hash, nick, add_nick_len, hash);
+
+ /* Check whether this client is already watching this nickname */
+ if (silc_hash_table_find_by_context(server->watcher_list, hash,
+ client, NULL)) {
+ /* Nickname is alredy being watched for this client */
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_WATCH,
+ SILC_STATUS_ERR_NICKNAME_IN_USE,
+ 0);
+ silc_free(nick);
+ goto out;
+ }
- /* Get invite list */
- tmp = silc_argument_get_arg_type(cmd->args, 6, NULL);
- if (!tmp) {
- silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
- SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
- goto out;
- }
+ /* Get the nickname from the watcher list and use the same key in
+ new entries as well. If key doesn't exist then create it. */
+ if (!silc_hash_table_find(server->watcher_list, hash, (void *)&tmp, NULL))
+ tmp = silc_memdup(hash, CLIENTID_HASH_LEN);
- /* Save the invite linst */
- channel->mode_data.invite_list = strdup(tmp);
- }
- } else {
- if (channel->mode & SILC_CHANNEL_MODE_INVITE_LIST) {
- /* Invite list mode is unset. Remove the entire invite list */
- if (channel->mode_data.invite_list) {
- silc_free(channel->mode_data.invite_list);
- channel->mode_data.invite_list = NULL;
- }
- }
+ /* Add the client to the watcher list with the specified nickname hash. */
+ silc_hash_table_add(server->watcher_list, tmp, client);
+ silc_free(nick);
}
- if (mode_mask & SILC_CHANNEL_MODE_CIPHER) {
- if (!(channel->mode & SILC_CHANNEL_MODE_CIPHER)) {
- /* Cipher to use protect the traffic */
- unsigned int key_len = 128;
- char *cp;
+ /* Delete nickname from watch list */
+ if (del_nick) {
+ nick = silc_identifier_check(del_nick, del_nick_len, SILC_STRING_UTF8, 128,
+ &del_nick_len);
+ if (!nick) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_WATCH,
+ SILC_STATUS_ERR_BAD_NICKNAME, 0);
+ goto out;
+ }
- /* Get cipher */
- tmp = silc_argument_get_arg_type(cmd->args, 8, NULL);
- if (!tmp) {
- silc_server_command_send_status_reply(cmd, SILC_COMMAND_CMODE,
- SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
- goto out;
- }
+ /* Hash the nick, we have the hash saved, not nicks because we can
+ do one to one mapping to the nick from Client ID hash this way. */
+ silc_hash_make(server->md5hash, nick, del_nick_len, hash);
+
+ /* Check that this client is watching for this nickname */
+ if (!silc_hash_table_find_by_context(server->watcher_list, hash,
+ client, (void *)&tmp)) {
+ /* Nickname is alredy being watched for this client */
+ silc_server_command_send_status_data(cmd, SILC_COMMAND_WATCH,
+ SILC_STATUS_ERR_NO_SUCH_NICK, 0,
+ 2, nick, del_nick_len);
+ silc_free(nick);
+ goto out;
+ }
- cp = strchr(tmp, ':');
- if (cp) {
- key_len = atoi(cp);
- *cp = '\0';
- }
+ /* Delete the nickname from the watcher list. */
+ silc_hash_table_del_by_context(server->watcher_list, hash, client);
- /* XXX Duplicated code, make own function for this!! */
-
- /* Delete old cipher and allocate the new one */
- silc_cipher_free(channel->channel_key);
- silc_cipher_alloc(tmp, &channel->channel_key);
+ /* Now check whether there still exists entries with this key, if not
+ then free the key to not leak memory. */
+ if (!silc_hash_table_find(server->watcher_list, hash, NULL, NULL))
+ silc_free(tmp);
+ silc_free(nick);
+ }
- key_len /= 8;
- if (key_len > 32)
- key_len = 32;
+ /* Add/del public key */
+ if (pk) {
+ SilcUInt16 pkargc;
+ SilcArgumentPayload pkargs;
+ SilcUInt32 type;
+ SilcPublicKey public_key, pkkey;
+
+ if (pk_len < 2) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_WATCH,
+ SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
+ 0);
+ goto out;
+ }
- /* Re-generate channel key */
- silc_server_create_channel_key(server, channel, key_len);
-
- /* Encode channel key payload to be distributed on the channel */
- packet =
- silc_channel_key_payload_encode(tmp_len2, tmp_id,
- strlen(channel->channel_key->
- cipher->name),
- channel->channel_key->cipher->name,
- channel->key_len / 8, channel->key);
-
- /* If we are normal server then we will send it to our router. If we
- are router we will send it to all local servers that has clients on
- the channel */
- if (server->server_type == SILC_SERVER) {
- if (!server->standalone)
- silc_server_packet_send(server,
- cmd->server->router->connection,
- SILC_PACKET_CHANNEL_KEY, 0, packet->data,
- packet->len, TRUE);
- } else {
-
- }
-
- /* Send to locally connected clients on the channel */
- silc_server_packet_send_local_channel(server, channel,
- SILC_PACKET_CHANNEL_KEY, 0,
- packet->data, packet->len, FALSE);
- silc_buffer_free(packet);
+ /* Get the argument from the Argument List Payload */
+ SILC_GET16_MSB(pkargc, pk);
+ pkargs = silc_argument_payload_parse(pk + 2, pk_len - 2, pkargc);
+ if (!pkargs) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_WATCH,
+ SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
+ 0);
+ goto out;
}
- } else {
- if (channel->mode & SILC_CHANNEL_MODE_CIPHER) {
- /* Cipher mode is unset. Remove the cipher and revert back to
- default cipher */
- if (channel->mode_data.cipher) {
- silc_free(channel->mode_data.cipher);
- channel->mode_data.cipher = NULL;
- channel->mode_data.key_len = 0;
+ pk = silc_argument_get_next_arg(pkargs, &type, &pk_len);
+ while (pk) {
+ if (!silc_public_key_payload_decode(pk, pk_len, &public_key)) {
+ pk = silc_argument_get_next_arg(pkargs, &type, &pk_len);
+ continue;
}
+ if (type == 0x03)
+ type = 0x00;
+
+ if (type == 0x00) {
+ /* Add public key to watch list */
+
+ /* Check whether this client is already watching this public key */
+ if (silc_hash_table_find_by_context(server->watcher_list_pk,
+ public_key, client, NULL)) {
+ silc_pkcs_public_key_free(public_key);
+ silc_server_command_send_status_reply(
+ cmd, SILC_COMMAND_WATCH,
+ SILC_STATUS_ERR_NICKNAME_IN_USE, 0);
+ goto out;
+ }
- /* Generate new cipher and key for the channel */
-
- /* XXX Duplicated code, make own function for this!! */
+ /* Get the public key from the watcher list and use the same key in
+ new entries as well. If key doesn't exist then create it. */
+ pkkey = NULL;
+ if (!silc_hash_table_find(server->watcher_list_pk, public_key,
+ (void *)&pkkey, NULL))
+ pkkey = public_key;
+ else
+ silc_pkcs_public_key_free(public_key);
+
+ /* Add the client to the watcher list with the specified public
+ key. */
+ silc_hash_table_add(server->watcher_list_pk, pkkey, client);
+
+ } else if (type == 0x01) {
+ /* Delete public key from watch list */
+
+ /* Check that this client is watching this public key */
+ if (silc_hash_table_find_by_context(server->watcher_list_pk,
+ public_key, client,
+ (void *)&pkkey)) {
+ silc_pkcs_public_key_free(public_key);
+ silc_server_command_send_status_reply(
+ cmd, SILC_COMMAND_WATCH,
+ SILC_STATUS_ERR_NOT_ENOUGH_PARAMS, 0);
+ goto out;
+ }
- /* Delete old cipher and allocate default one */
- silc_cipher_free(channel->channel_key);
- if (!channel->cipher)
- silc_cipher_alloc("twofish", &channel->channel_key);
- else
- silc_cipher_alloc(channel->cipher, &channel->channel_key);
+ /* Delete the public key from the watcher list. */
+ silc_hash_table_del_by_context(server->watcher_list_pk,
+ public_key, client);
- /* Re-generate channel key */
- silc_server_create_channel_key(server, channel, 0);
-
- /* Encode channel key payload to be distributed on the channel */
- packet =
- silc_channel_key_payload_encode(tmp_len2, tmp_id,
- strlen(channel->channel_key->
- cipher->name),
- channel->channel_key->cipher->name,
- channel->key_len / 8, channel->key);
-
- /* If we are normal server then we will send it to our router. If we
- are router we will send it to all local servers that has clients on
- the channel */
- if (server->server_type == SILC_SERVER) {
- if (!server->standalone)
- silc_server_packet_send(server,
- cmd->server->router->connection,
- SILC_PACKET_CHANNEL_KEY, 0, packet->data,
- packet->len, TRUE);
- } else {
-
+ /* Now check whether there still exists entries with this key, if
+ not then free the key to not leak memory. */
+ if (!silc_hash_table_find(server->watcher_list_pk, hash, NULL, NULL))
+ silc_pkcs_public_key_free(pkkey);
+ silc_pkcs_public_key_free(public_key);
}
-
- /* Send to locally connected clients on the channel */
- silc_server_packet_send_local_channel(server, channel,
- SILC_PACKET_CHANNEL_KEY, 0,
- packet->data, packet->len, FALSE);
- silc_buffer_free(packet);
+
+ pk = silc_argument_get_next_arg(pkargs, &type, &pk_len);
}
}
- /* Finally, set the mode */
- channel->mode = mode_mask;
+ /* Send reply */
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_WATCH,
+ SILC_STATUS_OK, 0);
- /* Send CMODE_CHANGE notify */
- cidp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
- silc_server_send_notify_to_channel(server, channel, TRUE,
- SILC_NOTIFY_TYPE_CMODE_CHANGE, 2,
- cidp->data, cidp->len,
- tmp_mask, tmp_len);
- silc_free(cidp);
+ /* Distribute the watch list to backup routers too */
+ if (server->backup) {
+ SilcBuffer tmpbuf;
- /* Send command reply to sender */
- packet = silc_command_reply_payload_encode_va(SILC_COMMAND_CMODE,
- SILC_STATUS_OK, 0, 1,
- 2, tmp_mask, 4);
- silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
- packet->data, packet->len, FALSE);
-
- silc_buffer_free(packet);
- silc_free(channel_id);
+ /* Statistics */
+ cmd->server->stat.commands_sent++;
+
+ old_ident = silc_command_get_ident(cmd->payload);
+ silc_command_set_ident(cmd->payload, ++server->cmd_ident);
+ tmpbuf = silc_command_payload_encode_payload(cmd->payload);
+ silc_server_backup_send(server, silc_packet_get_context(cmd->sock),
+ SILC_PACKET_COMMAND,
+ cmd->packet->flags, tmpbuf->data,
+ silc_buffer_len(tmpbuf),
+ FALSE, TRUE);
+ silc_command_set_ident(cmd->payload, old_ident);
+ silc_buffer_free(tmpbuf);
+ }
out:
silc_server_command_free(cmd);
}
-/* Server side of CUMODE command. Changes client's mode on a channel. */
+/* Server side of SILCOPER command. Client uses this comand to obtain router
+ operator privileges to this router. */
-SILC_SERVER_CMD_FUNC(cumode)
+SILC_SERVER_CMD_FUNC(silcoper)
{
SilcServerCommandContext cmd = (SilcServerCommandContext)context;
SilcServer server = cmd->server;
- SilcClientEntry client = (SilcClientEntry)cmd->sock->user_data;
- SilcChannelID *channel_id;
- SilcClientID *client_id;
- SilcChannelEntry channel;
- SilcClientEntry target_client;
- SilcChannelClientEntry chl;
- SilcBuffer packet, idp;
- unsigned char *tmp_id, *tmp_mask;
- unsigned int target_mask, sender_mask, tmp_len;
- int notify = FALSE;
+ SilcClientEntry client = silc_packet_get_context(cmd->sock);
+ unsigned char *username = NULL, *auth;
+ SilcUInt32 tmp_len;
+ SilcServerConfigAdmin *admin;
+ SilcIDListData idata = (SilcIDListData)client;
+ SilcBool result = FALSE;
+ SilcPublicKey cached_key;
+ const char *hostname, *ip;
+
+ if (client->data.conn_type != SILC_CONN_CLIENT || !client)
+ goto out;
- SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_CUMODE, cmd, 3, 3);
+ SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_SILCOPER, cmd, 1, 2);
- /* Get Channel ID */
- tmp_id = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
- if (!tmp_id) {
- silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
- SILC_STATUS_ERR_NO_CHANNEL_ID);
+ silc_socket_stream_get_info(silc_packet_stream_get_stream(cmd->sock),
+ NULL, &hostname, &ip, NULL);
+
+ if (server->server_type != SILC_ROUTER) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
+ SILC_STATUS_ERR_AUTH_FAILED, 0);
goto out;
}
- channel_id = silc_id_payload_parse_id(tmp_id, tmp_len);
- /* Get channel entry */
- channel = silc_idlist_find_channel_by_id(server->local_list,
- channel_id, NULL);
- if (!channel) {
- silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
- SILC_STATUS_ERR_NO_SUCH_CHANNEL);
+ /* Get the username */
+ username = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
+ if (!username) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
+ SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
+ 0);
goto out;
}
- /* Check whether sender is on the channel */
- if (!silc_server_client_on_channel(client, channel)) {
- silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
- SILC_STATUS_ERR_NOT_ON_CHANNEL);
+ /* Check username */
+ username = silc_identifier_check(username, tmp_len, SILC_STRING_UTF8, 128,
+ &tmp_len);
+ if (!username) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
+ SILC_STATUS_ERR_BAD_USERNAME,
+ 0);
goto out;
}
- /* Check that client has rights to change other's rights */
- silc_list_start(channel->user_list);
- while ((chl = silc_list_get(channel->user_list)) != SILC_LIST_END) {
- if (chl->client == client) {
- if (!(chl->mode & SILC_CHANNEL_UMODE_CHANFO) &&
- !(chl->mode & SILC_CHANNEL_UMODE_CHANOP)) {
- silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
- SILC_STATUS_ERR_NO_CHANNEL_PRIV);
- goto out;
- }
-
- sender_mask = chl->mode;
- break;
+ /* Get the admin configuration */
+ admin = silc_server_config_find_admin(server, (char *)ip,
+ username, client->nickname);
+ if (!admin) {
+ admin = silc_server_config_find_admin(server, (char *)hostname,
+ username, client->nickname);
+ if (!admin) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
+ SILC_STATUS_ERR_AUTH_FAILED, 0);
+ SILC_LOG_INFO(("SILCOPER authentication failed for username '%s' by "
+ "nickname '%s' from %s", username,
+ client->nickname, hostname));
+ goto out;
}
}
-
- /* Get the target client's channel mode mask */
- tmp_mask = silc_argument_get_arg_type(cmd->args, 2, NULL);
- if (!tmp_mask) {
- silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
- SILC_STATUS_ERR_NOT_ENOUGH_PARAMS);
+
+ /* Get the authentication payload */
+ auth = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
+ if (!auth) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
+ SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
+ 0);
goto out;
}
- SILC_GET32_MSB(target_mask, tmp_mask);
- /* Get target Client ID */
- tmp_id = silc_argument_get_arg_type(cmd->args, 3, &tmp_len);
- if (!tmp_id) {
- silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
- SILC_STATUS_ERR_NO_CHANNEL_ID);
+ /* Verify the authentication data. If both passphrase and public key
+ is set then try both of them. */
+ if (admin->passphrase)
+ result = silc_auth_verify_data(auth, tmp_len, SILC_AUTH_PASSWORD,
+ admin->passphrase, admin->passphrase_len,
+ idata->hash, client->id, SILC_ID_CLIENT);
+ if (!result && admin->publickeys) {
+ cached_key =
+ silc_server_get_public_key(server,
+ SILC_SKR_USAGE_SERVICE_AUTHORIZATION, admin);
+ if (!cached_key)
+ goto out;
+ result = silc_auth_verify_data(auth, tmp_len, SILC_AUTH_PUBLIC_KEY,
+ cached_key, 0, idata->hash,
+ client->id, SILC_ID_CLIENT);
+ }
+ if (!result) {
+ /* Authentication failed */
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
+ SILC_STATUS_ERR_AUTH_FAILED, 0);
goto out;
}
- client_id = silc_id_payload_parse_id(tmp_id, tmp_len);
- /* Get target client's entry */
- target_client = silc_idlist_find_client_by_id(server->local_list,
- client_id, NULL);
- if (!target_client) {
- /* XXX If target client is not one of mine send to primary route */
- }
+ /* Client is now router operator */
+ client->mode |= SILC_UMODE_ROUTER_OPERATOR;
- /* Check whether target client is on the channel */
- if (!silc_server_client_on_channel(target_client, channel)) {
- silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
- SILC_STATUS_ERR_USER_NOT_ON_CHANNEL);
+ /* Update statistics */
+ if (SILC_IS_LOCAL(client))
+ server->stat.my_router_ops++;
+ if (server->server_type == SILC_ROUTER)
+ server->stat.router_ops++;
+
+ /* Send UMODE change to primary router */
+ silc_server_send_notify_umode(server, SILC_PRIMARY_ROUTE(server),
+ SILC_BROADCAST(server), client->id,
+ client->mode);
+
+ /* Check if anyone is watching this nickname */
+ if (server->server_type == SILC_ROUTER)
+ silc_server_check_watcher_list(server, client, NULL,
+ SILC_NOTIFY_TYPE_UMODE_CHANGE);
+
+ /* Send reply to the sender */
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_SILCOPER,
+ SILC_STATUS_OK, 0);
+
+ out:
+ silc_free(username);
+ silc_server_command_free(cmd);
+}
+
+/* Server side of command BAN. This is used to manage the ban list of the
+ channel. To add clients and remove clients from the ban list. */
+
+SILC_SERVER_CMD_FUNC(ban)
+{
+ SilcServerCommandContext cmd = (SilcServerCommandContext)context;
+ SilcServer server = cmd->server;
+ SilcClientEntry client = silc_packet_get_context(cmd->sock);
+ SilcBuffer list, tmp2;
+ SilcChannelEntry channel;
+ SilcChannelClientEntry chl;
+ SilcID id;
+ unsigned char *tmp_id, *tmp, *atype = NULL;
+ SilcUInt32 id_len, len, len2;
+ SilcArgumentPayload args;
+ SilcHashTableList htl;
+ void *type;
+ SilcUInt16 argc = 0, ident = silc_command_get_ident(cmd->payload);
+ SilcBufferStruct blist;
+
+ if (client->data.conn_type != SILC_CONN_CLIENT || !client)
goto out;
- }
- /* Get entry to the channel user list */
- silc_list_start(channel->user_list);
- while ((chl = silc_list_get(channel->user_list)) != SILC_LIST_END)
- if (chl->client == target_client)
- break;
+ SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_BAN, cmd, 0, 3);
- /*
- * Change the mode
- */
+ /* Get Channel ID */
+ if (!silc_argument_get_decoded(cmd->args, 1, SILC_ARGUMENT_ID, &id, NULL)) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_BAN,
+ SILC_STATUS_ERR_NO_CHANNEL_ID, 0);
+ goto out;
+ }
- /* If the target client is founder, no one else can change their mode
- but themselves. */
- if (chl->mode & SILC_CHANNEL_UMODE_CHANFO && chl->client != target_client) {
- silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
- SILC_STATUS_ERR_NOT_YOU);
+ /* Get channel entry. The server must know about the channel since the
+ client is expected to be on the channel. */
+ channel = silc_idlist_find_channel_by_id(server->local_list,
+ SILC_ID_GET_ID(id), NULL);
+ if (!channel) {
+ channel = silc_idlist_find_channel_by_id(server->global_list,
+ SILC_ID_GET_ID(id), NULL);
+ if (!channel) {
+ tmp_id = silc_argument_get_arg_type(cmd->args, 1, &id_len);
+ silc_server_command_send_status_data(
+ cmd, SILC_COMMAND_BAN,
+ SILC_STATUS_ERR_NO_SUCH_CHANNEL_ID,
+ 0, 2, tmp_id, id_len);
+ goto out;
+ }
+ }
+
+ /* Check whether this client is on the channel */
+ if (!silc_server_client_on_channel(client, channel, &chl)) {
+ tmp_id = silc_argument_get_arg_type(cmd->args, 1, &id_len);
+ silc_server_command_send_status_data(cmd, SILC_COMMAND_BAN,
+ SILC_STATUS_ERR_NOT_ON_CHANNEL, 0,
+ 2, tmp_id, id_len);
goto out;
}
- if (target_mask & SILC_CHANNEL_UMODE_CHANFO) {
- /* Cannot promote anyone to channel founder */
- silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
- SILC_STATUS_ERR_NOT_YOU);
+ /* The client must be at least channel operator. */
+ if (!(chl->mode & SILC_CHANNEL_UMODE_CHANOP)) {
+ tmp_id = silc_argument_get_arg_type(cmd->args, 1, &id_len);
+ silc_server_command_send_status_data(cmd, SILC_COMMAND_BAN,
+ SILC_STATUS_ERR_NO_CHANNEL_PRIV, 0,
+ 2, tmp_id, id_len);
goto out;
- } else {
- if (chl->mode & SILC_CHANNEL_UMODE_CHANFO) {
- if (target_client == client) {
- /* Remove channel founder rights from itself */
- chl->mode &= ~SILC_CHANNEL_UMODE_CHANFO;
- notify = TRUE;
- } else {
- silc_server_command_send_status_reply(cmd, SILC_COMMAND_CUMODE,
- SILC_STATUS_ERR_NOT_YOU);
+ }
+
+ /* Get the ban information */
+ tmp = silc_argument_get_arg_type(cmd->args, 3, &len2);
+ if (tmp && len2 > 2) {
+ /* Parse the arguments to see they are constructed correctly */
+ SILC_GET16_MSB(argc, tmp);
+ args = silc_argument_payload_parse(tmp + 2, len2 - 2, argc);
+ if (!args) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_BAN,
+ SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
+ 0);
+ goto out;
+ }
+
+ /* Get the type of action */
+ atype = silc_argument_get_arg_type(cmd->args, 2, &len);
+ if (atype && len == 1) {
+ if (atype[0] == 0x00) {
+ /* Allocate hash table for ban list if it doesn't exist yet */
+ if (!channel->ban_list)
+ channel->ban_list =
+ silc_hash_table_alloc(0, silc_hash_ptr,
+ NULL, NULL, NULL,
+ silc_server_inviteban_destruct, channel,
+ TRUE);
+
+ /* Check for resource limit */
+ if (silc_hash_table_count(channel->ban_list) > 64) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_BAN,
+ SILC_STATUS_ERR_RESOURCE_LIMIT,
+ 0);
+ goto out;
+ }
+ }
+
+ /* Now add or delete the information. */
+ if (!silc_server_inviteban_process(server, channel->ban_list,
+ (SilcUInt8)atype[0], args)) {
+ silc_server_command_send_status_reply(
+ cmd, SILC_COMMAND_BAN,
+ SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
+ 0);
goto out;
}
}
+ silc_argument_payload_free(args);
}
- if (target_mask & SILC_CHANNEL_UMODE_CHANOP) {
- /* Promote to operator */
- if (!(chl->mode & SILC_CHANNEL_UMODE_CHANOP)) {
- chl->mode |= SILC_CHANNEL_UMODE_CHANOP;
- notify = TRUE;
- }
- } else {
- if (chl->mode & SILC_CHANNEL_UMODE_CHANOP) {
- /* Demote to normal user */
- chl->mode &= ~SILC_CHANNEL_UMODE_CHANOP;
- notify = TRUE;
- }
+ /* Encode ban list */
+ list = NULL;
+ if (channel->ban_list && silc_hash_table_count(channel->ban_list)) {
+ list = silc_buffer_alloc_size(2);
+ silc_buffer_format(list,
+ SILC_STR_UI_SHORT(silc_hash_table_count(
+ channel->ban_list)),
+ SILC_STR_END);
+ silc_hash_table_list(channel->ban_list, &htl);
+ while (silc_hash_table_get(&htl, (void *)&type, (void *)&tmp2))
+ list = silc_argument_payload_encode_one(list, tmp2->data,
+ silc_buffer_len(tmp2),
+ SILC_PTR_TO_32(type));
+ silc_hash_table_list_reset(&htl);
}
- /* Send notify to channel, notify only if mode was actually changed. */
- if (notify) {
- idp = silc_id_payload_encode(client->id, SILC_ID_CLIENT);
- silc_server_send_notify_to_channel(server, channel, TRUE,
- SILC_NOTIFY_TYPE_CUMODE_CHANGE, 3,
- idp->data, idp->len,
- tmp_mask, 4, tmp_id, tmp_len);
- silc_buffer_free(idp);
+ tmp_id = silc_argument_get_arg_type(cmd->args, 1, &id_len);
+
+ /* Send BAN notify type to local servers (but not clients) and to
+ network. */
+ if (atype && tmp && len2) {
+ silc_buffer_set(&blist, tmp, len2);
+
+ /* Send to local servers if we are router */
+ if (server->server_type == SILC_ROUTER)
+ silc_server_send_notify_to_channel(server, NULL, channel, FALSE, FALSE,
+ SILC_NOTIFY_TYPE_BAN, 3,
+ tmp_id, id_len,
+ atype, 1,
+ tmp ? blist.data : NULL,
+ tmp ? silc_buffer_len(&blist) : 0);
+
+ /* Send to network. */
+ silc_server_send_notify_ban(server, SILC_PRIMARY_ROUTE(server),
+ SILC_BROADCAST(server), channel, atype,
+ &blist);
}
- /* Send command reply to sender */
- packet = silc_command_reply_payload_encode_va(SILC_COMMAND_CUMODE,
- SILC_STATUS_OK, 0, 2,
- 2, tmp_mask, 4,
- 3, tmp_id, tmp_len);
- silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
- packet->data, packet->len, FALSE);
-
- silc_buffer_free(packet);
- silc_free(channel_id);
- silc_free(client_id);
+ /* Send the reply back to the client */
+ silc_server_send_command_reply(server, cmd->sock, SILC_COMMAND_BAN,
+ SILC_STATUS_OK, 0, ident, 2,
+ 2, tmp_id, id_len,
+ 3, list ? list->data : NULL,
+ list ? silc_buffer_len(list) : 0);
+ silc_buffer_free(list);
out:
silc_server_command_free(cmd);
}
-/* Server side of KICK command. Kicks client out of channel. */
-
-SILC_SERVER_CMD_FUNC(kick)
-{
-}
-
-SILC_SERVER_CMD_FUNC(restart)
-{
-}
-
-SILC_SERVER_CMD_FUNC(close)
-{
-}
-
-SILC_SERVER_CMD_FUNC(die)
-{
-}
-
-SILC_SERVER_CMD_FUNC(silcoper)
-{
-}
-
/* Server side command of LEAVE. Removes client from a channel. */
SILC_SERVER_CMD_FUNC(leave)
{
SilcServerCommandContext cmd = (SilcServerCommandContext)context;
SilcServer server = cmd->server;
- SilcSocketConnection sock = cmd->sock;
- SilcClientEntry id_entry = (SilcClientEntry)cmd->sock->user_data;
- SilcChannelID *id;
+ SilcPacketStream sock = cmd->sock;
+ SilcClientEntry id_entry = silc_packet_get_context(cmd->sock);
+ SilcID id;
SilcChannelEntry channel;
- SilcBuffer packet;
- unsigned int i, len;
+ SilcUInt32 len;
unsigned char *tmp;
- SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_LEAVE, cmd, 1, 2);
+ if (id_entry->data.conn_type != SILC_CONN_CLIENT || !id_entry)
+ goto out;
+
+ SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_LEAVE, cmd, 1, 2);
/* Get Channel ID */
- tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
- if (!tmp) {
+ if (!silc_argument_get_decoded(cmd->args, 1, SILC_ARGUMENT_ID, &id, NULL)) {
silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
- SILC_STATUS_ERR_NO_CHANNEL_ID);
+ SILC_STATUS_ERR_NO_CHANNEL_ID, 0);
goto out;
}
- id = silc_id_payload_parse_id(tmp, len);
/* Get channel entry */
- channel = silc_idlist_find_channel_by_id(server->local_list, id, NULL);
+ channel = silc_idlist_find_channel_by_id(server->local_list,
+ SILC_ID_GET_ID(id), NULL);
if (!channel) {
- silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
- SILC_STATUS_ERR_NO_SUCH_CHANNEL);
- goto out;
+ channel = silc_idlist_find_channel_by_id(server->global_list,
+ SILC_ID_GET_ID(id), NULL);
+ if (!channel) {
+ tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
+ silc_server_command_send_status_data(cmd, SILC_COMMAND_LEAVE,
+ SILC_STATUS_ERR_NO_SUCH_CHANNEL_ID,
+ 0, 2, tmp, len);
+ goto out;
+ }
}
/* Check whether this client is on the channel */
- if (!silc_server_client_on_channel(id_entry, channel)) {
- silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
- SILC_STATUS_ERR_NOT_ON_CHANNEL);
+ if (!silc_server_client_on_channel(id_entry, channel, NULL)) {
+ tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
+ silc_server_command_send_status_data(cmd, SILC_COMMAND_LEAVE,
+ SILC_STATUS_ERR_NOT_ON_CHANNEL, 0,
+ 2, tmp, len);
goto out;
}
/* Notify routers that they should remove this client from their list
- of clients on the channel. */
- if (!server->standalone)
- silc_server_send_remove_channel_user(server,
- server->router->connection,
- server->server_type == SILC_ROUTER ?
- TRUE : FALSE, id_entry->id, id);
+ of clients on the channel. Send LEAVE notify type. */
+ silc_server_send_notify_leave(server, SILC_PRIMARY_ROUTE(server),
+ SILC_BROADCAST(server), channel, id_entry->id);
- /* Remove client from channel */
- i = silc_server_remove_from_one_channel(server, sock, channel, id_entry,
- TRUE);
- silc_server_command_send_status_reply(cmd, SILC_COMMAND_LEAVE,
- SILC_STATUS_OK);
-
- /* If the channel does not exist anymore we won't send anything */
- if (!i)
- goto out;
-
- /* Re-generate channel key */
- silc_server_create_channel_key(server, channel, 0);
-
- /* Encode channel key payload to be distributed on the channel */
- packet =
- silc_channel_key_payload_encode(len, tmp,
- strlen(channel->channel_key->cipher->name),
- channel->channel_key->cipher->name,
- channel->key_len / 8, channel->key);
-
- /* If we are normal server then we will send it to our router. If we
- are router we will send it to all local servers that has clients on
- the channel */
- if (server->server_type == SILC_SERVER) {
- if (!server->standalone)
- silc_server_packet_send(server,
- cmd->server->router->connection,
- SILC_PACKET_CHANNEL_KEY, 0, packet->data,
- packet->len, TRUE);
- } else {
+ tmp = silc_argument_get_arg_type(cmd->args, 1, &len);
+ silc_server_command_send_status_data(cmd, SILC_COMMAND_LEAVE,
+ SILC_STATUS_OK, 0, 2, tmp, len);
- }
+ /* Remove client from channel */
+ if (!silc_server_remove_from_one_channel(server, sock, channel, id_entry,
+ TRUE))
+ /* If the channel does not exist anymore we won't send anything */
+ goto out;
- /* Send to locally connected clients on the channel */
- silc_server_packet_send_local_channel(server, channel,
- SILC_PACKET_CHANNEL_KEY, 0,
- packet->data, packet->len, FALSE);
+ if (!(channel->mode & SILC_CHANNEL_MODE_PRIVKEY)) {
+ /* Re-generate channel key */
+ if (!silc_server_create_channel_key(server, channel, 0))
+ goto out;
- silc_buffer_free(packet);
- silc_free(id);
+ /* Send the channel key */
+ silc_server_send_channel_key(server, NULL, channel,
+ server->server_type == SILC_ROUTER ?
+ FALSE : !server->standalone);
+ }
out:
silc_server_command_free(cmd);
{
SilcServerCommandContext cmd = (SilcServerCommandContext)context;
SilcServer server = cmd->server;
+ SilcIDListData idata = silc_packet_get_context(cmd->sock);
SilcChannelEntry channel;
- SilcChannelClientEntry chl;
- SilcChannelID *id;
- SilcBuffer packet;
+ SilcID id;
+ SilcBuffer idp;
unsigned char *channel_id;
- unsigned int channel_id_len;
+ SilcUInt32 channel_id_len;
SilcBuffer client_id_list;
SilcBuffer client_mode_list;
- SilcBuffer idp;
unsigned char lc[4];
- unsigned int list_count = 0;
- unsigned short ident = silc_command_get_ident(cmd->payload);
+ SilcUInt32 list_count = 0;
+ SilcUInt16 ident = silc_command_get_ident(cmd->payload);
+ char *channel_name, *channel_namec = NULL;
- SILC_SERVER_COMMAND_CHECK_ARGC(SILC_COMMAND_USERS, cmd, 1, 2);
+ SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_USERS, cmd, 1, 2);
/* Get Channel ID */
channel_id = silc_argument_get_arg_type(cmd->args, 1, &channel_id_len);
- if (!channel_id) {
+
+ /* Get channel name */
+ channel_name = silc_argument_get_arg_type(cmd->args, 2, NULL);
+
+ if (!channel_id && !channel_name) {
silc_server_command_send_status_reply(cmd, SILC_COMMAND_USERS,
- SILC_STATUS_ERR_NO_CHANNEL_ID);
+ SILC_STATUS_ERR_NO_CHANNEL_ID, 0);
goto out;
}
- id = silc_id_payload_parse_id(channel_id, channel_id_len);
+
+ /* Check channel name */
+ if (channel_name) {
+ channel_namec = silc_channel_name_check(channel_name, strlen(channel_name),
+ SILC_STRING_UTF8, 256, NULL);
+ if (!channel_namec) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_USERS,
+ SILC_STATUS_ERR_BAD_CHANNEL, 0);
+ goto out;
+ }
+ }
+
+ /* Check Channel ID */
+ if (channel_id) {
+ if (!silc_id_payload_parse_id(channel_id, channel_id_len, &id)) {
+ silc_server_command_send_status_data(cmd, SILC_COMMAND_USERS,
+ SILC_STATUS_ERR_BAD_CHANNEL_ID, 0,
+ 2, channel_id, channel_id_len);
+ goto out;
+ }
+ }
/* If we are server and we don't know about this channel we will send
the command to our router. If we know about the channel then we also
have the list of users already. */
- channel = silc_idlist_find_channel_by_id(server->local_list, id, NULL);
- if (!channel) {
- if (server->server_type == SILC_SERVER && !server->standalone &&
+ if (channel_id)
+ channel = silc_idlist_find_channel_by_id(server->local_list,
+ SILC_ID_GET_ID(id), NULL);
+ else
+ channel = silc_idlist_find_channel_by_name(server->local_list,
+ channel_namec, NULL);
+
+ if (!channel || (!server->standalone && (channel->disabled ||
+ !channel->users_resolved))) {
+ if (server->server_type != SILC_ROUTER && !server->standalone &&
!cmd->pending) {
SilcBuffer tmpbuf;
-
- silc_command_set_ident(cmd->payload, silc_rng_get_rn16(server->rng));
+
+ /* Statistics */
+ cmd->server->stat.commands_sent++;
+
+ silc_command_set_ident(cmd->payload, ++server->cmd_ident);
tmpbuf = silc_command_payload_encode_payload(cmd->payload);
-
+
/* Send USERS command */
- silc_server_packet_send(server, server->router->connection,
+ silc_server_packet_send(server, SILC_PRIMARY_ROUTE(server),
SILC_PACKET_COMMAND, cmd->packet->flags,
- tmpbuf->data, tmpbuf->len, TRUE);
-
+ tmpbuf->data, silc_buffer_len(tmpbuf));
+
/* Reprocess this packet after received reply */
- silc_server_command_pending(server, SILC_COMMAND_USERS,
+ silc_server_command_pending(server, SILC_COMMAND_USERS,
silc_command_get_ident(cmd->payload),
- silc_server_command_users, (void *)cmd);
+ silc_server_command_users,
+ silc_server_command_dup(cmd));
cmd->pending = TRUE;
silc_command_set_ident(cmd->payload, ident);
-
silc_buffer_free(tmpbuf);
- silc_free(id);
- return;
+ goto out;
}
- /* We are router and we will check the global list as well. */
- channel = silc_idlist_find_channel_by_id(server->global_list, id, NULL);
+ /* Check the global list as well. */
+ if (channel_id)
+ channel = silc_idlist_find_channel_by_id(server->global_list,
+ SILC_ID_GET_ID(id), NULL);
+ else
+ channel = silc_idlist_find_channel_by_name(server->global_list,
+ channel_namec, NULL);
if (!channel) {
/* Channel really does not exist */
- silc_server_command_send_status_reply(cmd, SILC_COMMAND_USERS,
- SILC_STATUS_ERR_NO_SUCH_CHANNEL);
+ if (channel_id)
+ silc_server_command_send_status_data(
+ cmd, SILC_COMMAND_USERS,
+ SILC_STATUS_ERR_NO_SUCH_CHANNEL_ID, 0,
+ 2, channel_id, channel_id_len);
+ else
+ silc_server_command_send_status_data(
+ cmd, SILC_COMMAND_USERS,
+ SILC_STATUS_ERR_NO_SUCH_CHANNEL, 0,
+ 2, channel_name, strlen(channel_name));
goto out;
}
}
- /* Assemble the lists now */
-
- client_id_list = silc_buffer_alloc((SILC_ID_CLIENT_LEN + 4) *
- silc_list_count(channel->user_list));
- silc_buffer_pull_tail(client_id_list, SILC_BUFFER_END(client_id_list));
- client_mode_list =
- silc_buffer_alloc(4 * silc_list_count(channel->user_list));
- silc_buffer_pull_tail(client_mode_list, SILC_BUFFER_END(client_mode_list));
-
- silc_list_start(channel->user_list);
- while ((chl = silc_list_get(channel->user_list)) != SILC_LIST_END) {
- /* Client ID */
- idp = silc_id_payload_encode(chl->client->id, SILC_ID_CLIENT);
- silc_buffer_put(client_id_list, idp->data, idp->len);
- silc_buffer_pull(client_id_list, idp->len);
- silc_buffer_free(idp);
-
- /* Client's mode on channel */
- SILC_PUT32_MSB(chl->mode, client_mode_list->data);
- silc_buffer_pull(client_mode_list, 4);
+ /* If the channel is private or secret do not send anything, unless the
+ user requesting this command is on the channel or is server */
+ if (idata->conn_type == SILC_CONN_CLIENT) {
+ if (channel->mode & (SILC_CHANNEL_MODE_PRIVATE | SILC_CHANNEL_MODE_SECRET)
+ && !silc_server_client_on_channel((SilcClientEntry)idata, channel,
+ NULL)) {
+ silc_server_command_send_status_data(cmd, SILC_COMMAND_USERS,
+ SILC_STATUS_ERR_NO_SUCH_CHANNEL, 0,
+ 2, channel->channel_name,
+ strlen(channel->channel_name));
+ goto out;
+ }
+ }
- list_count++;
+ /* Get the users list */
+ if (!silc_server_get_users_on_channel(server, channel, &client_id_list,
+ &client_mode_list, &list_count)) {
+ list_count = 0;
+ client_id_list = NULL;
+ client_mode_list = NULL;
}
- silc_buffer_push(client_id_list,
- client_id_list->data - client_id_list->head);
- silc_buffer_push(client_mode_list,
- client_mode_list->data - client_mode_list->head);
/* List count */
SILC_PUT32_MSB(list_count, lc);
/* Send reply */
- packet = silc_command_reply_payload_encode_va(SILC_COMMAND_USERS,
- SILC_STATUS_OK, 0, 4,
- 2, channel_id, channel_id_len,
- 3, lc, 4,
- 4, client_id_list->data,
- client_id_list->len,
- 5, client_mode_list->data,
- client_mode_list->len);
- silc_server_packet_send(server, cmd->sock, SILC_PACKET_COMMAND_REPLY, 0,
- packet->data, packet->len, FALSE);
-
- silc_buffer_free(packet);
- silc_buffer_free(client_id_list);
- silc_buffer_free(client_mode_list);
- silc_free(id);
+ idp = silc_id_payload_encode(channel->id, SILC_ID_CHANNEL);
+ silc_server_send_command_reply(server, cmd->sock, SILC_COMMAND_USERS,
+ SILC_STATUS_OK, 0, ident, 4,
+ 2, idp->data, silc_buffer_len(idp),
+ 3, lc, 4,
+ 4, client_id_list ?
+ client_id_list->data : NULL,
+ client_id_list ?
+ silc_buffer_len(client_id_list) : 0,
+ 5, client_mode_list ?
+ client_mode_list->data : NULL,
+ client_mode_list ?
+ silc_buffer_len(client_mode_list) : 0);
+ silc_buffer_free(idp);
+ if (client_id_list)
+ silc_buffer_free(client_id_list);
+ if (client_mode_list)
+ silc_buffer_free(client_mode_list);
+
+ out:
+ silc_free(channel_namec);
+ silc_server_command_free(cmd);
+}
+
+/* Server side of command GETKEY. This fetches the client's public key
+ from the server where to the client is connected. */
+
+SILC_SERVER_CMD_FUNC(getkey)
+{
+ SilcServerCommandContext cmd = (SilcServerCommandContext)context;
+ SilcServer server = cmd->server;
+ SilcClientEntry client;
+ SilcServerEntry server_entry;
+ SilcClientID client_id;
+ SilcServerID server_id;
+ SilcIDPayload idp = NULL;
+ SilcUInt16 ident = silc_command_get_ident(cmd->payload);
+ unsigned char *tmp;
+ SilcUInt32 tmp_len;
+ SilcBuffer pk = NULL;
+ SilcIdType id_type;
+ SilcPublicKey public_key;
+
+ tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
+ if (!tmp) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_GETKEY,
+ SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
+ 0);
+ goto out;
+ }
+ idp = silc_id_payload_parse(tmp, tmp_len);
+ if (!idp) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_GETKEY,
+ SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
+ 0);
+ goto out;
+ }
+
+ id_type = silc_id_payload_get_type(idp);
+ if (id_type == SILC_ID_CLIENT) {
+ silc_id_payload_get_id(idp, &client_id, sizeof(client_id));
+
+ /* If the client is not found from local list there is no chance it
+ would be locally connected client so send the command further. */
+ client = silc_idlist_find_client_by_id(server->local_list,
+ &client_id, TRUE, NULL);
+ if (!client)
+ client = silc_idlist_find_client_by_id(server->global_list,
+ &client_id, TRUE, NULL);
+
+ if ((!client && !cmd->pending && !server->standalone) ||
+ (client && !client->connection && !cmd->pending &&
+ !(client->mode & SILC_UMODE_DETACHED)) ||
+ (client && !client->data.public_key && !cmd->pending)) {
+ SilcBuffer tmpbuf;
+ SilcUInt16 old_ident;
+ SilcPacketStream dest_sock;
+
+ dest_sock = silc_server_get_client_route(server, NULL, 0,
+ &client_id, NULL, NULL);
+ if (!dest_sock)
+ goto out;
+
+ /* Statistics */
+ cmd->server->stat.commands_sent++;
+
+ old_ident = silc_command_get_ident(cmd->payload);
+ silc_command_set_ident(cmd->payload, ++server->cmd_ident);
+ tmpbuf = silc_command_payload_encode_payload(cmd->payload);
+
+ silc_server_packet_send(server, dest_sock,
+ SILC_PACKET_COMMAND, cmd->packet->flags,
+ tmpbuf->data, silc_buffer_len(tmpbuf));
+
+ /* Reprocess this packet after received reply from router */
+ silc_server_command_pending(server, SILC_COMMAND_GETKEY,
+ silc_command_get_ident(cmd->payload),
+ silc_server_command_getkey,
+ silc_server_command_dup(cmd));
+ cmd->pending = TRUE;
+ silc_command_set_ident(cmd->payload, old_ident);
+ silc_buffer_free(tmpbuf);
+ goto out;
+ }
+
+ if (!client) {
+ silc_server_command_send_status_data(cmd, SILC_COMMAND_GETKEY,
+ SILC_STATUS_ERR_NO_SUCH_CLIENT_ID,
+ 0, 2, tmp, tmp_len);
+ goto out;
+ }
+
+ /* The client is locally connected, just get the public key and
+ send it back. If they key does not exist then do not send it,
+ send just OK reply */
+ public_key = client->data.public_key;
+ if (public_key)
+ pk = silc_public_key_payload_encode(public_key);
+ } else if (id_type == SILC_ID_SERVER) {
+ silc_id_payload_get_id(idp, &server_id, sizeof(server_id));
+
+ /* If the server is not found from local list there is no chance it
+ would be locally connected server so send the command further. */
+ server_entry = silc_idlist_find_server_by_id(server->local_list,
+ &server_id, TRUE, NULL);
+ if (!server_entry)
+ server_entry = silc_idlist_find_server_by_id(server->global_list,
+ &server_id, TRUE, NULL);
+
+ if (server_entry != server->id_entry &&
+ ((!server_entry && !cmd->pending && !server->standalone) ||
+ (server_entry && !server_entry->connection && !cmd->pending &&
+ !server->standalone) ||
+ (server_entry && !server_entry->data.public_key && !cmd->pending &&
+ !server->standalone))) {
+ SilcBuffer tmpbuf;
+ SilcUInt16 old_ident;
+
+ /* Statistics */
+ cmd->server->stat.commands_sent++;
+
+ old_ident = silc_command_get_ident(cmd->payload);
+ silc_command_set_ident(cmd->payload, ++server->cmd_ident);
+ tmpbuf = silc_command_payload_encode_payload(cmd->payload);
+
+ silc_server_packet_send(server, SILC_PRIMARY_ROUTE(server),
+ SILC_PACKET_COMMAND, cmd->packet->flags,
+ tmpbuf->data, silc_buffer_len(tmpbuf));
+
+ /* Reprocess this packet after received reply from router */
+ silc_server_command_pending(server, SILC_COMMAND_GETKEY,
+ silc_command_get_ident(cmd->payload),
+ silc_server_command_getkey,
+ silc_server_command_dup(cmd));
+ cmd->pending = TRUE;
+ silc_command_set_ident(cmd->payload, old_ident);
+ silc_buffer_free(tmpbuf);
+ goto out;
+ }
+
+ if (!server_entry) {
+ silc_server_command_send_status_data(cmd, SILC_COMMAND_GETKEY,
+ SILC_STATUS_ERR_NO_SUCH_SERVER_ID,
+ 0, 2, tmp, tmp_len);
+ goto out;
+ }
+
+ /* If they key does not exist then do not send it, send just OK reply */
+ public_key = (!server_entry->data.public_key ?
+ (server_entry == server->id_entry ? server->public_key :
+ NULL) : server_entry->data.public_key);
+ if (public_key)
+ pk = silc_public_key_payload_encode(public_key);
+ } else {
+ goto out;
+ }
+
+ tmp = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
+ silc_server_send_command_reply(server, cmd->sock, SILC_COMMAND_GETKEY,
+ SILC_STATUS_OK, 0, ident, 2,
+ 2, tmp, tmp_len,
+ 3, pk ? pk->data : NULL,
+ pk ? silc_buffer_len(pk) : 0);
+
+ out:
+ if (idp)
+ silc_id_payload_free(idp);
+ silc_buffer_free(pk);
+ silc_server_command_free(cmd);
+}
+
+/* Server side of command SERVICE. */
+/* XXX currently this just sends empty reply back */
+
+SILC_SERVER_CMD_FUNC(service)
+{
+ SilcServerCommandContext cmd = (SilcServerCommandContext)context;
+ SilcServer server = cmd->server;
+ SilcUInt32 tmp_len, auth_len;
+ unsigned char *service_name, *auth;
+ SilcBool send_list = FALSE;
+ SilcUInt16 ident = silc_command_get_ident(cmd->payload);
+
+ SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_SERVICE, cmd, 0, 256);
+
+ /* Get requested service */
+ service_name = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
+ if (service_name && tmp_len) {
+ /* Verify service name */
+ if (!silc_identifier_verify(service_name, tmp_len,
+ SILC_STRING_UTF8, 256)) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_SERVICE,
+ SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
+ 0);
+ goto out;
+ }
+ }
+
+ /* Get authentication payload if present */
+ auth = silc_argument_get_arg_type(cmd->args, 2, &auth_len);
+ if (auth) {
+ /* XXX */
+ }
+
+
+ send_list = TRUE;
+
+ /* Send our service list back */
+ silc_server_send_command_reply(server, cmd->sock, SILC_COMMAND_SERVICE,
+ SILC_STATUS_OK, 0, ident, 0);
+
+ out:
+ silc_server_command_free(cmd);
+}
+
+
+/* Private range commands, specific to this implementation */
+
+/* Server side command of CONNECT. Connects us to the specified remote
+ server or router. */
+
+SILC_SERVER_CMD_FUNC(connect)
+{
+ SilcServerCommandContext cmd = (SilcServerCommandContext)context;
+ SilcServer server = cmd->server;
+ SilcClientEntry client = silc_packet_get_context(cmd->sock);
+ unsigned char *tmp, *host;
+ SilcUInt32 tmp_len;
+ SilcUInt32 port = SILC_PORT;
+
+ if (client->data.conn_type != SILC_CONN_CLIENT || !client)
+ goto out;
+
+ SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_PRIV_CONNECT, cmd, 1, 2);
+
+ /* Check whether client has the permissions. */
+ if (!(client->mode & SILC_UMODE_SERVER_OPERATOR) &&
+ !(client->mode & SILC_UMODE_ROUTER_OPERATOR)) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_PRIV_CONNECT,
+ SILC_STATUS_ERR_NO_SERVER_PRIV, 0);
+ goto out;
+ }
+
+ if (server->server_type == SILC_ROUTER && !server->backup_router &&
+ client->mode & SILC_UMODE_SERVER_OPERATOR) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_PRIV_CONNECT,
+ SILC_STATUS_ERR_NO_ROUTER_PRIV, 0);
+ goto out;
+ }
+
+ /* Get the remote server */
+ host = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
+ if (!host) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_PRIV_CONNECT,
+ SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
+ 0);
+ goto out;
+ }
+
+ /* Get port */
+ tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
+ if (tmp)
+ SILC_GET32_MSB(port, tmp);
+
+ /* Create the connection. It is done with timeout and is async. */
+ silc_server_create_connection(server, FALSE, FALSE, host, port, NULL, NULL);
+
+ /* Send reply to the sender */
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_PRIV_CONNECT,
+ SILC_STATUS_OK, 0);
+
+ out:
+ silc_server_command_free(cmd);
+}
+
+/* Server side command of CLOSE. Closes connection to a specified server. */
+
+SILC_SERVER_CMD_FUNC(close)
+{
+ SilcServerCommandContext cmd = (SilcServerCommandContext)context;
+ SilcServer server = cmd->server;
+ SilcClientEntry client = silc_packet_get_context(cmd->sock);
+ SilcServerEntry server_entry;
+ SilcPacketStream sock;
+ unsigned char *tmp;
+ SilcUInt32 tmp_len;
+ unsigned char *name;
+ SilcUInt32 port = SILC_PORT;
+
+ if (client->data.conn_type != SILC_CONN_CLIENT || !client)
+ goto out;
+
+ SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_PRIV_CLOSE, cmd, 1, 2);
+
+ /* Check whether client has the permissions. */
+ if (!(client->mode & SILC_UMODE_SERVER_OPERATOR) &&
+ !(client->mode & SILC_UMODE_ROUTER_OPERATOR)) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_PRIV_CLOSE,
+ SILC_STATUS_ERR_NO_SERVER_PRIV,
+ 0);
+ goto out;
+ }
+
+ /* Get the remote server */
+ name = silc_argument_get_arg_type(cmd->args, 1, &tmp_len);
+ if (!name) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_PRIV_CLOSE,
+ SILC_STATUS_ERR_NOT_ENOUGH_PARAMS,
+ 0);
+ goto out;
+ }
+
+ /* Get port */
+ tmp = silc_argument_get_arg_type(cmd->args, 2, &tmp_len);
+ if (tmp)
+ SILC_GET32_MSB(port, tmp);
+
+ server_entry = silc_idlist_find_server_by_conn(server->local_list,
+ name, port, TRUE, NULL);
+ if (!server_entry)
+ server_entry = silc_idlist_find_server_by_conn(server->global_list,
+ name, port, TRUE, NULL);
+ if (!server_entry) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_PRIV_CLOSE,
+ SILC_STATUS_ERR_NO_SERVER_ID, 0);
+ goto out;
+ }
+
+ if (server_entry == server->id_entry) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_PRIV_CLOSE,
+ SILC_STATUS_ERR_NO_SERVER_ID, 0);
+ goto out;
+ }
+
+ /* Send reply to the sender */
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_PRIV_CLOSE,
+ SILC_STATUS_OK, 0);
+
+ /* Close the connection to the server */
+ sock = server_entry->connection;
+
+ if (server_entry->server_type == SILC_BACKUP_ROUTER) {
+ server->backup_closed = TRUE;
+ silc_server_backup_del(server, server_entry);
+ }
+
+ server->backup_noswitch = TRUE;
+ if (server->router == server_entry) {
+ server->id_entry->router = NULL;
+ server->router = NULL;
+ server->standalone = TRUE;
+ }
+ silc_server_disconnect_remote(server, sock,
+ SILC_STATUS_ERR_BANNED_FROM_SERVER,
+ "Closed by administrator");
+ silc_server_free_sock_user_data(server, sock, NULL);
+ server->backup_noswitch = FALSE;
+
+ out:
+ silc_server_command_free(cmd);
+}
+
+/* Server side command of SHUTDOWN. Shutdowns the server and closes all
+ active connections. */
+
+SILC_SERVER_CMD_FUNC(shutdown)
+{
+ SilcServerCommandContext cmd = (SilcServerCommandContext)context;
+ SilcServer server = cmd->server;
+ SilcClientEntry client = silc_packet_get_context(cmd->sock);
+
+ if (client->data.conn_type != SILC_CONN_CLIENT || !client)
+ goto out;
+
+ SILC_SERVER_COMMAND_CHECK(SILC_COMMAND_PRIV_SHUTDOWN, cmd, 0, 0);
+
+ /* Check whether client has the permission. */
+ if (!(client->mode & SILC_UMODE_SERVER_OPERATOR) &&
+ !(client->mode & SILC_UMODE_ROUTER_OPERATOR)) {
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_PRIV_SHUTDOWN,
+ SILC_STATUS_ERR_NO_SERVER_PRIV,
+ 0);
+ goto out;
+ }
+
+ /* Send reply to the sender */
+ silc_server_command_send_status_reply(cmd, SILC_COMMAND_PRIV_SHUTDOWN,
+ SILC_STATUS_OK, 0);
+
+ /* Then, gracefully, or not, bring the server down. */
+ silc_server_stop(server);
+ exit(0);
out:
silc_server_command_free(cmd);
projects / silc.git / blobdiff