/*
* ngIRCd -- The Next Generation IRC Daemon
- * Copyright (c)2001,2002 by Alexander Barton (alex@barton.de)
+ * Copyright (c)2001-2015 Alexander Barton (alex@barton.de) and Contributors.
*
* 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.
* Please read the file COPYING, README and AUTHORS for more information.
- *
- * IRC channel commands
*/
-
#include "portab.h"
-static char UNUSED id[] = "$Id: irc-channel.c,v 1.23 2003/01/01 13:29:40 alex Exp $";
+/**
+ * @file
+ * IRC channel commands
+ */
-#include "imp.h"
#include <assert.h>
+#include <stdlib.h>
+#include <stdio.h>
#include <string.h>
-#include "defines.h"
#include "conn.h"
-#include "client.h"
#include "channel.h"
+#include "conn-func.h"
#include "lists.h"
#include "log.h"
#include "match.h"
#include "messages.h"
#include "parse.h"
+#include "irc.h"
#include "irc-info.h"
+#include "irc-macros.h"
#include "irc-write.h"
-#include "resolve.h"
#include "conf.h"
-#include "exp.h"
#include "irc-channel.h"
-
-GLOBAL BOOLEAN
-IRC_JOIN( CLIENT *Client, REQUEST *Req )
+/**
+ * Part from all channels.
+ *
+ * RFC 2812, (3.2.1 Join message Command):
+ * Note that this message accepts a special argument ("0"), which is a
+ * special request to leave all channels the user is currently a member of.
+ * The server will process this message as if the user had sent a PART
+ * command (See Section 3.2.2) for each channel he is a member of.
+ *
+ * @param client Client that initiated the part request
+ * @param target Client that should part all joined channels
+ * @returns CONNECTED or DISCONNECTED
+ */
+static bool
+part_from_all_channels(CLIENT* client, CLIENT *target)
{
- CHAR *channame, *key, *flags, *topic, modes[8];
- BOOLEAN is_new_chan, is_invited, is_banned;
- CLIENT *target;
+ CL2CHAN *cl2chan;
CHANNEL *chan;
- assert( Client != NULL );
- assert( Req != NULL );
+ while ((cl2chan = Channel_FirstChannelOf(target))) {
+ chan = Channel_GetChannel(cl2chan);
+ assert( chan != NULL );
+ Channel_Part(target, client, Channel_Name(chan), Client_ID(target));
+ }
+ return CONNECTED;
+} /* part_from_all_channels */
+
+/**
+ * Check weather a local client is allowed to join an already existing
+ * channel or not.
+ *
+ * @param Client Client that sent the JOIN command
+ * @param chan Channel to check
+ * @param channame Name of the channel
+ * @param key Provided channel key (or NULL)
+ * @returns true if client is allowed to join, false otherwise
+ */
+static bool
+join_allowed(CLIENT *Client, CHANNEL *chan, const char *channame,
+ const char *key)
+{
+ bool is_invited, is_banned, is_exception;
- /* Bad number of arguments? */
- if(( Req->argc > 2 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
+ /* Allow IRC operators to overwrite channel limits */
+ if (Client_HasMode(Client, 'o'))
+ return true;
- /* Who is the sender? */
- if( Client_Type( Client ) == CLIENT_SERVER ) target = Client_Search( Req->prefix );
- else target = Client;
- if( ! target ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
+ is_banned = Lists_Check(Channel_GetListBans(chan), Client);
+ is_exception = Lists_Check(Channel_GetListExcepts(chan), Client);
+ is_invited = Lists_Check(Channel_GetListInvites(chan), Client);
- /* Are channel keys given? */
- if( Req->argc > 1 ) key = Req->argv[1];
- else key = NULL;
-
- /* Channel-Namen durchgehen */
- chan = NULL;
- channame = strtok( Req->argv[0], "," );
- while( channame )
- {
- chan = flags = NULL;
-
- /* wird der Channel neu angelegt? */
- if( Channel_Search( channame )) is_new_chan = FALSE;
- else is_new_chan = TRUE;
-
- /* Hat ein Server Channel-User-Modes uebergeben? */
- if( Client_Type( Client ) == CLIENT_SERVER )
- {
- /* Channel-Flags extrahieren */
- flags = strchr( channame, 0x7 );
- if( flags )
- {
- *flags = '\0';
- flags++;
- }
+ if (is_banned && !is_invited && !is_exception) {
+ /* Client is banned from channel (and not on invite list) */
+ IRC_WriteErrClient(Client, ERR_BANNEDFROMCHAN_MSG,
+ Client_ID(Client), channame);
+ return false;
+ }
+
+ if (Channel_HasMode(chan, 'i') && !is_invited) {
+ /* Channel is "invite-only" and client is not on invite list */
+ IRC_WriteErrClient(Client, ERR_INVITEONLYCHAN_MSG,
+ Client_ID(Client), channame);
+ return false;
+ }
+
+ if (!Channel_CheckKey(chan, Client, key ? key : "")) {
+ /* Channel is protected by a channel key and the client
+ * didn't specify the correct one */
+ IRC_WriteErrClient(Client, ERR_BADCHANNELKEY_MSG,
+ Client_ID(Client), channame);
+ return false;
+ }
+
+ if (Channel_HasMode(chan, 'l') &&
+ (Channel_MaxUsers(chan) <= Channel_MemberCount(chan))) {
+ /* There are more clints joined to this channel than allowed */
+ IRC_WriteErrClient(Client, ERR_CHANNELISFULL_MSG,
+ Client_ID(Client), channame);
+ return false;
+ }
+
+ if (Channel_HasMode(chan, 'z') && !Conn_UsesSSL(Client_Conn(Client))) {
+ /* Only "secure" clients are allowed, but clients doesn't
+ * use SSL encryption */
+ IRC_WriteErrClient(Client, ERR_SECURECHANNEL_MSG,
+ Client_ID(Client), channame);
+ return false;
+ }
+
+ if (Channel_HasMode(chan, 'O') && !Client_HasMode(Client, 'o')) {
+ /* Only IRC operators are allowed! */
+ IRC_WriteErrClient(Client, ERR_OPONLYCHANNEL_MSG,
+ Client_ID(Client), channame);
+ return false;
+ }
+
+ if (Channel_HasMode(chan, 'R') && !Client_HasMode(Client, 'R')) {
+ /* Only registered users are allowed! */
+ IRC_WriteErrClient(Client, ERR_REGONLYCHANNEL_MSG,
+ Client_ID(Client), channame);
+ return false;
+ }
+
+ return true;
+} /* join_allowed */
+
+/**
+ * Set user channel modes.
+ *
+ * @param chan Channel
+ * @param target User to set modes for
+ * @param flags Channel modes to add
+ */
+static void
+join_set_channelmodes(CHANNEL *chan, CLIENT *target, const char *flags)
+{
+ if (flags) {
+ while (*flags) {
+ Channel_UserModeAdd(chan, target, *flags);
+ flags++;
}
+ }
- /* Lokaler Client? */
- if( Client_Type( Client ) == CLIENT_USER )
- {
- /* Test if the user has reached his maximum channel count */
- if( Client_Type( Client ) == CLIENT_USER )
- {
- if(( Conf_MaxJoins > 0 ) && ( Channel_CountForUser( Client ) >= Conf_MaxJoins ))
- {
- IRC_WriteStrClient( Client, ERR_TOOMANYCHANNELS_MSG, Client_ID( Client ), channame );
- return CONNECTED;
- }
- }
+ /* If the channel is persistent (+P) and client is an IRC op:
+ * make client chanop, if not disabled in configuration. */
+ if (Channel_HasMode(chan, 'P') && Conf_OperChanPAutoOp
+ && Client_HasMode(target, 'o'))
+ Channel_UserModeAdd(chan, target, 'o');
+} /* join_set_channelmodes */
- /* Existiert der Channel bereits, oder wird er im Moment neu erzeugt? */
- if( is_new_chan )
- {
- /* Erster User im Channel: Operator-Flag setzen */
- flags = "o";
- }
- else
- {
- /* Existierenden Channel suchen */
- chan = Channel_Search( channame );
- assert( chan != NULL );
+/**
+ * Forward JOIN command to a specific server
+ *
+ * This function differentiates between servers using RFC 2813 mode that
+ * support the JOIN command with appended ASCII 7 character and channel
+ * modes, and servers using RFC 1459 protocol which require separate JOIN
+ * and MODE commands.
+ *
+ * @param To Forward JOIN (and MODE) command to this peer server
+ * @param Prefix Client used to prefix the genrated commands
+ * @param Data Parameters of JOIN command to forward, probably
+ * containing channel modes separated by ASCII 7.
+ */
+static void
+cb_join_forward(CLIENT *To, CLIENT *Prefix, void *Data)
+{
+ CONN_ID conn;
+ char str[COMMAND_LEN], *ptr = NULL;
+
+ strlcpy(str, (char *)Data, sizeof(str));
+ conn = Client_Conn(To);
+
+ if (Conn_Options(conn) & CONN_RFC1459) {
+ /* RFC 1459 compatibility mode, appended modes are NOT
+ * supported, so strip them off! */
+ ptr = strchr(str, 0x7);
+ if (ptr)
+ *ptr++ = '\0';
+ }
- is_banned = Lists_CheckBanned( target, chan );
- is_invited = Lists_CheckInvited( target, chan );
+ IRC_WriteStrClientPrefix(To, Prefix, "JOIN %s", str);
+ if (ptr && *ptr)
+ IRC_WriteStrClientPrefix(To, Prefix, "MODE %s +%s %s", str, ptr,
+ Client_ID(Prefix));
+} /* cb_join_forward */
- /* Testen, ob Client gebanned ist */
- if(( is_banned == TRUE ) && ( is_invited == FALSE ))
- {
- /* Client ist gebanned (und nicht invited): */
- IRC_WriteStrClient( Client, ERR_BANNEDFROMCHAN_MSG, Client_ID( Client ), channame );
+/**
+ * Forward JOIN command to all servers
+ *
+ * This function calls cb_join_forward(), which differentiates between
+ * protocol implementations (e.g. RFC 2812, RFC 1459).
+ *
+ * @param Client Client used to prefix the genrated commands
+ * @param target Forward JOIN (and MODE) command to this peer server
+ * @param chan Channel structure
+ * @param channame Channel name
+ */
+static void
+join_forward(CLIENT *Client, CLIENT *target, CHANNEL *chan,
+ const char *channame)
+{
+ char modes[CHANNEL_MODE_LEN], str[COMMAND_LEN];
+
+ /* RFC 2813, 4.2.1: channel modes are separated from the channel
+ * name with ASCII 7, if any, and not spaces: */
+ strlcpy(&modes[1], Channel_UserModes(chan, target), sizeof(modes) - 1);
+ if (modes[1])
+ modes[0] = 0x7;
+ else
+ modes[0] = '\0';
+
+ /* forward to other servers (if it is not a local channel) */
+ if (!Channel_IsLocal(chan)) {
+ snprintf(str, sizeof(str), "%s%s", channame, modes);
+ IRC_WriteStrServersPrefixFlag_CB(Client, target, '\0',
+ cb_join_forward, str);
+ }
- /* Try next name, if any */
- channame = strtok( NULL, "," );
- continue;
- }
+ /* tell users in this channel about the new client */
+ IRC_WriteStrChannelPrefix(Client, chan, target, false,
+ "JOIN :%s", channame);
- /* Ist der Channel "invite-only"? */
- if(( strchr( Channel_Modes( chan ), 'i' )) && ( is_invited == FALSE ))
- {
- /* Channel ist "invite-only" und Client wurde nicht invited: */
- IRC_WriteStrClient( Client, ERR_INVITEONLYCHAN_MSG, Client_ID( Client ), channame );
+ /* synchronize channel modes */
+ if (modes[1]) {
+ IRC_WriteStrChannelPrefix(Client, chan, target, false,
+ "MODE %s +%s %s", channame,
+ &modes[1], Client_ID(target));
+ }
+} /* join_forward */
- /* Try next name, if any */
- channame = strtok( NULL, "," );
- continue;
- }
+/**
+ * Acknowledge user JOIN request and send "channel info" numerics.
+ *
+ * @param Client Client used to prefix the genrated commands
+ * @param target Forward commands/numerics to this user
+ * @param chan Channel structure
+ * @param channame Channel name
+ */
+static bool
+join_send_topic(CLIENT *Client, CLIENT *target, CHANNEL *chan,
+ const char *channame)
+{
+ const char *topic;
+
+ if (Client_Type(Client) != CLIENT_USER)
+ return true;
+ /* acknowledge join */
+ if (!IRC_WriteStrClientPrefix(Client, target, "JOIN :%s", channame))
+ return false;
+
+ /* Send topic to client, if any */
+ topic = Channel_Topic(chan);
+ assert(topic != NULL);
+ if (*topic) {
+ if (!IRC_WriteStrClient(Client, RPL_TOPIC_MSG,
+ Client_ID(Client), channame, topic))
+ return false;
+#ifndef STRICT_RFC
+ if (!IRC_WriteStrClient(Client, RPL_TOPICSETBY_MSG,
+ Client_ID(Client), channame,
+ Channel_TopicWho(chan),
+ Channel_TopicTime(chan)))
+ return false;
+#endif
+ }
+ /* send list of channel members to client */
+ if (!IRC_Send_NAMES(Client, chan))
+ return false;
+ return IRC_WriteStrClient(Client, RPL_ENDOFNAMES_MSG, Client_ID(Client),
+ Channel_Name(chan));
+} /* join_send_topic */
+
+/**
+ * Handler for the IRC "JOIN" command.
+ *
+ * @param Client The client from which this command has been received.
+ * @param Req Request structure with prefix and all parameters.
+ * @return CONNECTED or DISCONNECTED.
+ */
+GLOBAL bool
+IRC_JOIN( CLIENT *Client, REQUEST *Req )
+{
+ char *channame, *key = NULL, *flags, *lastkey = NULL, *lastchan = NULL;
+ CLIENT *target;
+ CHANNEL *chan;
- /* Is the channel protected by a key? */
- if(( strchr( Channel_Modes( chan ), 'k' )) && ( strcmp( Channel_Key( chan ), key ? key : "" ) != 0 ))
- {
- /* Bad channel key! */
- IRC_WriteStrClient( Client, ERR_BADCHANNELKEY_MSG, Client_ID( Client ), channame );
+ assert (Client != NULL);
+ assert (Req != NULL);
- /* Try next name, if any */
- channame = strtok( NULL, "," );
- continue;
- }
+ _IRC_GET_SENDER_OR_RETURN_(target, Req, Client)
- /* Are there already too many members? */
- if(( strchr( Channel_Modes( chan ), 'l' )) && ( Channel_MaxUsers( chan ) <= Channel_MemberCount( chan )))
- {
- /* Bad channel key! */
- IRC_WriteStrClient( Client, ERR_CHANNELISFULL_MSG, Client_ID( Client ), channame );
+ /* Is argument "0"? */
+ if (Req->argc == 1 && !strncmp("0", Req->argv[0], 2))
+ return part_from_all_channels(Client, target);
- /* Try next name, if any */
- channame = strtok( NULL, "," );
- continue;
- }
+ /* Are channel keys given? */
+ if (Req->argc > 1)
+ key = strtok_r(Req->argv[1], ",", &lastkey);
+
+ channame = Req->argv[0];
+ channame = strtok_r(channame, ",", &lastchan);
+
+ /* Make sure that "channame" is not the empty string ("JOIN :") */
+ if (!channame)
+ return IRC_WriteErrClient(Client, ERR_NEEDMOREPARAMS_MSG,
+ Client_ID(Client), Req->command);
+
+ while (channame) {
+ flags = NULL;
+
+ /* Did the server include channel-user-modes? */
+ if (Client_Type(Client) == CLIENT_SERVER) {
+ flags = strchr(channame, 0x7);
+ if (flags) {
+ *flags = '\0';
+ flags++;
}
}
- /* Channel joinen (und ggf. anlegen) */
- if( ! Channel_Join( target, channame ))
- {
- /* naechsten Namen ermitteln */
- channame = strtok( NULL, "," );
- continue;
- }
- if( ! chan ) chan = Channel_Search( channame );
- assert( chan != NULL );
+ chan = Channel_Search(channame);
+
+ /* Local client? */
+ if (Client_Type(Client) == CLIENT_USER) {
+ if (chan) {
+ /* Already existing channel: already member? */
+ if (Channel_IsMemberOf(chan, Client))
+ goto join_next;
+ } else {
+ /* Channel must be created */
+ if (!strchr(Conf_AllowedChannelTypes, channame[0])) {
+ /* ... but channel type is not allowed! */
+ IRC_WriteErrClient(Client,
+ ERR_NOSUCHCHANNEL_MSG,
+ Client_ID(Client), channame);
+ goto join_next;
+ }
+ }
- /* Modes setzen (wenn vorhanden) */
- while( flags && *flags )
- {
- Channel_UserModeAdd( chan, target, *flags );
- flags++;
- }
+ /* Test if the user has reached the channel limit */
+ if ((Conf_MaxJoins > 0) &&
+ (Channel_CountForUser(Client) >= Conf_MaxJoins)) {
+ if (!IRC_WriteErrClient(Client,
+ ERR_TOOMANYCHANNELS_MSG,
+ Client_ID(Client), channame))
+ return DISCONNECTED;
+ goto join_next;
+ }
- /* Wenn persistenter Channel und IRC-Operator: zum Channel-OP machen */
- if(( strchr( Channel_Modes( chan ), 'P' )) && ( strchr( Client_Modes( target ), 'o' ))) Channel_UserModeAdd( chan, target, 'o' );
+ if (chan) {
+ /* Already existing channel: check if the
+ * client is allowed to join */
+ if (!join_allowed(Client, chan, channame, key))
+ goto join_next;
+ } else {
+ /* New channel: first user will become channel
+ * operator unless this is a modeless channel */
+ if (*channame != '+')
+ flags = "o";
+ }
- /* Muessen Modes an andere Server gemeldet werden? */
- strlcpy( &modes[1], Channel_UserModes( chan, target ), sizeof( modes ) - 1 );
- if( modes[1] ) modes[0] = 0x7;
- else modes[0] = '\0';
+ /* Local client: update idle time */
+ Conn_UpdateIdle(Client_Conn(Client));
+ } else {
+ /* Remote server: we don't need to know whether the
+ * client is invited or not, but we have to make sure
+ * that the "one shot" entries (generated by INVITE
+ * commands) in this list become deleted when a user
+ * joins a channel this way. */
+ if (chan)
+ (void)Lists_Check(Channel_GetListInvites(chan),
+ target);
+ }
- /* An andere Server weiterleiten */
- IRC_WriteStrServersPrefix( Client, target, "JOIN :%s%s", channame, modes );
+ /* Join channel (and create channel if it doesn't exist) */
+ if (!Channel_Join(target, channame))
+ goto join_next;
- /* im Channel bekannt machen */
- IRC_WriteStrChannelPrefix( Client, chan, target, FALSE, "JOIN :%s", channame );
- if( modes[1] )
- {
- /* Modes im Channel bekannt machen */
- IRC_WriteStrChannelPrefix( Client, chan, target, FALSE, "MODE %s +%s %s", channame, &modes[1], Client_ID( target ));
+ if (!chan) { /* channel is new; it has been created above */
+ chan = Channel_Search(channame);
+ assert(chan != NULL);
+ if (Channel_IsModeless(chan)) {
+ Channel_ModeAdd(chan, 't'); /* /TOPIC not allowed */
+ Channel_ModeAdd(chan, 'n'); /* no external msgs */
+ }
}
+ assert(chan != NULL);
- if( Client_Type( Client ) == CLIENT_USER )
- {
- /* an Client bestaetigen */
- IRC_WriteStrClientPrefix( Client, target, "JOIN :%s", channame );
+ join_set_channelmodes(chan, target, flags);
- /* Topic an Client schicken */
- topic = Channel_Topic( chan );
- if( *topic ) IRC_WriteStrClient( Client, RPL_TOPIC_MSG, Client_ID( Client ), channame, topic );
+ join_forward(Client, target, chan, channame);
- /* Mitglieder an Client Melden */
- IRC_Send_NAMES( Client, chan );
- IRC_WriteStrClient( Client, RPL_ENDOFNAMES_MSG, Client_ID( Client ), Channel_Name( chan ));
- }
+ if (!join_send_topic(Client, target, chan, channame))
+ break; /* write error */
- /* naechsten Namen ermitteln */
- channame = strtok( NULL, "," );
+ join_next:
+ /* next channel? */
+ channame = strtok_r(NULL, ",", &lastchan);
+ if (channame && key)
+ key = strtok_r(NULL, ",", &lastkey);
}
return CONNECTED;
} /* IRC_JOIN */
-
-GLOBAL BOOLEAN
-IRC_PART( CLIENT *Client, REQUEST *Req )
+/**
+ * Handler for the IRC "PART" command.
+ *
+ * @param Client The client from which this command has been received.
+ * @param Req Request structure with prefix and all parameters.
+ * @return CONNECTED or DISCONNECTED.
+ */
+GLOBAL bool
+IRC_PART(CLIENT * Client, REQUEST * Req)
{
CLIENT *target;
- CHAR *chan;
+ char *chan;
- assert( Client != NULL );
- assert( Req != NULL );
+ assert(Client != NULL);
+ assert(Req != NULL);
- /* Falsche Anzahl Parameter? */
- if(( Req->argc > 2 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
-
- /* Wer ist der Absender? */
- if( Client_Type( Client ) == CLIENT_SERVER ) target = Client_Search( Req->prefix );
- else target = Client;
- if( ! target ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
-
- /* Channel-Namen durchgehen */
- chan = strtok( Req->argv[0], "," );
- while( chan )
- {
- if( ! Channel_Part( target, Client, chan, Req->argc > 1 ? Req->argv[1] : Client_ID( target )))
- {
- /* naechsten Namen ermitteln */
- chan = strtok( NULL, "," );
- continue;
- }
+ _IRC_GET_SENDER_OR_RETURN_(target, Req, Client)
+
+ /* Loop over all the given channel names */
+ chan = strtok(Req->argv[0], ",");
- /* naechsten Namen ermitteln */
- chan = strtok( NULL, "," );
+ /* Make sure that "chan" is not the empty string ("PART :") */
+ if (!chan)
+ return IRC_WriteErrClient(Client, ERR_NEEDMOREPARAMS_MSG,
+ Client_ID(Client), Req->command);
+
+ while (chan) {
+ Channel_Part(target, Client, chan,
+ Req->argc > 1 ? Req->argv[1] : "");
+ chan = strtok(NULL, ",");
}
+
+ /* Update idle time, if local client */
+ if (Client_Conn(Client) > NONE)
+ Conn_UpdateIdle(Client_Conn(Client));
+
return CONNECTED;
} /* IRC_PART */
-
-GLOBAL BOOLEAN
+/**
+ * Handler for the IRC "TOPIC" command.
+ *
+ * @param Client The client from which this command has been received.
+ * @param Req Request structure with prefix and all parameters.
+ * @return CONNECTED or DISCONNECTED.
+ */
+GLOBAL bool
IRC_TOPIC( CLIENT *Client, REQUEST *Req )
{
CHANNEL *chan;
CLIENT *from;
- CHAR *topic;
+ char *topic;
+ bool r, topic_power;
assert( Client != NULL );
assert( Req != NULL );
- /* Falsche Anzahl Parameter? */
- if(( Req->argc < 1 ) || ( Req->argc > 2 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
-
- if( Client_Type( Client ) == CLIENT_SERVER ) from = Client_Search( Req->prefix );
- else from = Client;
- if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
-
- /* Welcher Channel? */
- chan = Channel_Search( Req->argv[0] );
- if( ! chan ) return IRC_WriteStrClient( from, ERR_NOSUCHCHANNEL_MSG, Client_ID( from ), Req->argv[0] );
-
- /* Ist der User Mitglied in dem Channel? */
- if( ! Channel_IsMemberOf( chan, from )) return IRC_WriteStrClient( from, ERR_NOTONCHANNEL_MSG, Client_ID( from ), Req->argv[0] );
-
- if( Req->argc == 1 )
- {
- /* Topic erfragen */
- topic = Channel_Topic( chan );
- if( *topic ) return IRC_WriteStrClient( from, RPL_TOPIC_MSG, Client_ID( from ), Channel_Name( chan ), topic );
- else return IRC_WriteStrClient( from, RPL_NOTOPIC_MSG, Client_ID( from ), Channel_Name( chan ));
+ _IRC_GET_SENDER_OR_RETURN_(from, Req, Client)
+
+ chan = Channel_Search(Req->argv[0]);
+ if (!chan)
+ return IRC_WriteErrClient(from, ERR_NOSUCHCHANNEL_MSG,
+ Client_ID(from), Req->argv[0]);
+
+ /* Only remote servers and channel members are allowed to change the
+ * channel topic, and IRC operators when the Conf_OperCanMode option
+ * is set in the server configuration. */
+ if (Client_Type(Client) != CLIENT_SERVER) {
+ topic_power = Client_HasMode(from, 'o');
+ if (!Channel_IsMemberOf(chan, from)
+ && !(Conf_OperCanMode && topic_power))
+ return IRC_WriteErrClient(from, ERR_NOTONCHANNEL_MSG,
+ Client_ID(from), Req->argv[0]);
+ } else
+ topic_power = true;
+
+ if (Req->argc == 1) {
+ /* Request actual topic */
+ topic = Channel_Topic(chan);
+ if (*topic) {
+ r = IRC_WriteStrClient(from, RPL_TOPIC_MSG,
+ Client_ID(Client),
+ Channel_Name(chan), topic);
+#ifndef STRICT_RFC
+ if (!r)
+ return r;
+ r = IRC_WriteStrClient(from, RPL_TOPICSETBY_MSG,
+ Client_ID(Client),
+ Channel_Name(chan),
+ Channel_TopicWho(chan),
+ Channel_TopicTime(chan));
+#endif
+ return r;
+ }
+ else
+ return IRC_WriteStrClient(from, RPL_NOTOPIC_MSG,
+ Client_ID(from),
+ Channel_Name(chan));
}
- if( strchr( Channel_Modes( chan ), 't' ))
- {
- /* Topic Lock. Ist der User ein Channel Operator? */
- if( ! strchr( Channel_UserModes( chan, from ), 'o' )) return IRC_WriteStrClient( from, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( from ), Channel_Name( chan ));
+ if (Channel_HasMode(chan, 't')) {
+ /* Topic Lock. Is the user a channel op or IRC operator? */
+ if(!topic_power &&
+ !Channel_UserHasMode(chan, from, 'h') &&
+ !Channel_UserHasMode(chan, from, 'o') &&
+ !Channel_UserHasMode(chan, from, 'a') &&
+ !Channel_UserHasMode(chan, from, 'q'))
+ return IRC_WriteErrClient(from, ERR_CHANOPRIVSNEEDED_MSG,
+ Client_ID(from),
+ Channel_Name(chan));
}
- /* Topic setzen */
- Channel_SetTopic( chan, Req->argv[1] );
- Log( LOG_DEBUG, "User \"%s\" set topic on \"%s\": %s", Client_Mask( from ), Channel_Name( chan ), Req->argv[1][0] ? Req->argv[1] : "<none>" );
-
- /* im Channel bekannt machen und an Server weiterleiten */
- IRC_WriteStrServersPrefix( Client, from, "TOPIC %s :%s", Req->argv[0], Req->argv[1] );
- IRC_WriteStrChannelPrefix( Client, chan, from, FALSE, "TOPIC %s :%s", Req->argv[0], Req->argv[1] );
-
- if( Client_Type( Client ) == CLIENT_USER ) return IRC_WriteStrClientPrefix( Client, Client, "TOPIC %s :%s", Req->argv[0], Req->argv[1] );
- else return CONNECTED;
+ /* Set new topic */
+ Channel_SetTopic(chan, from, Req->argv[1]);
+ LogDebug("%s \"%s\" set topic on \"%s\": %s",
+ Client_TypeText(from), Client_Mask(from), Channel_Name(chan),
+ Req->argv[1][0] ? Req->argv[1] : "<none>");
+
+ if (Conf_OperServerMode)
+ from = Client_ThisServer();
+
+ /* Update channel and forward new topic to other servers */
+ if (!Channel_IsLocal(chan))
+ IRC_WriteStrServersPrefix(Client, from, "TOPIC %s :%s",
+ Req->argv[0], Req->argv[1]);
+ IRC_WriteStrChannelPrefix(Client, chan, from, false, "TOPIC %s :%s",
+ Req->argv[0], Req->argv[1]);
+
+ if (Client_Type(Client) == CLIENT_USER)
+ return IRC_WriteStrClientPrefix(Client, Client, "TOPIC %s :%s",
+ Req->argv[0], Req->argv[1]);
+ else
+ return CONNECTED;
} /* IRC_TOPIC */
-
-GLOBAL BOOLEAN
+/**
+ * Handler for the IRC "LIST" command.
+ *
+ * @param Client The client from which this command has been received.
+ * @param Req Request structure with prefix and all parameters.
+ * @return CONNECTED or DISCONNECTED.
+ */
+GLOBAL bool
IRC_LIST( CLIENT *Client, REQUEST *Req )
{
- CHAR *pattern;
+ char *pattern;
CHANNEL *chan;
CLIENT *from, *target;
-
- assert( Client != NULL );
- assert( Req != NULL );
-
- /* Falsche Anzahl Parameter? */
- if( Req->argc > 2 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
-
- if( Req->argc > 0 ) pattern = strtok( Req->argv[0], "," );
- else pattern = "*";
-
- /* From aus Prefix ermitteln */
- if( Client_Type( Client ) == CLIENT_SERVER ) from = Client_Search( Req->prefix );
- else from = Client;
- if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHSERVER_MSG, Client_ID( Client ), Req->prefix );
-
- if( Req->argc == 2 )
- {
- /* an anderen Server forwarden */
- target = Client_Search( Req->argv[1] );
- if(( ! target ) || ( Client_Type( target ) != CLIENT_SERVER )) return IRC_WriteStrClient( from, ERR_NOSUCHSERVER_MSG, Client_ID( Client ), Req->argv[1] );
-
- if( target != Client_ThisServer( ))
- {
- /* Ok, anderer Server ist das Ziel: forwarden */
- return IRC_WriteStrClientPrefix( target, from, "LIST %s :%s", from, Req->argv[1] );
+ int count = 0;
+
+ assert(Client != NULL);
+ assert(Req != NULL);
+
+ _IRC_GET_SENDER_OR_RETURN_(from, Req, Client)
+
+ if (Req->argc > 0)
+ pattern = strtok(Req->argv[0], ",");
+ else
+ pattern = "*";
+
+ if (Req->argc == 2) {
+ /* Forward to other server? */
+ target = Client_Search(Req->argv[1]);
+ if (! target || Client_Type(target) != CLIENT_SERVER)
+ return IRC_WriteErrClient(from, ERR_NOSUCHSERVER_MSG,
+ Client_ID(Client),
+ Req->argv[1]);
+
+ if (target != Client_ThisServer()) {
+ /* Target is indeed an other server, forward it! */
+ return IRC_WriteStrClientPrefix(target, from,
+ "LIST %s :%s",
+ Req->argv[0],
+ Req->argv[1]);
}
}
-
- while( pattern )
- {
- /* alle Channel durchgehen */
- chan = Channel_First( );
- while( chan )
- {
- /* Passt die Suchmaske auf diesen Channel? */
- if( Match( pattern, Channel_Name( chan )))
- {
- /* Treffer! */
- if( ! IRC_WriteStrClient( from, RPL_LIST_MSG, from, Channel_Name( chan ), Channel_MemberCount( chan ), Channel_Topic( chan ))) return DISCONNECTED;
+
+ while (pattern) {
+ /* Loop through all the channels */
+ if (Req->argc > 0)
+ ngt_LowerStr(pattern);
+ chan = Channel_First();
+ while (chan) {
+ /* Check search pattern */
+ if (MatchCaseInsensitive(pattern, Channel_Name(chan))) {
+ /* Gotcha! */
+ if (!Channel_HasMode(chan, 's')
+ || Channel_IsMemberOf(chan, from)
+ || Client_HasMode(from, 'o'))
+ {
+ if ((Conf_MaxListSize > 0)
+ && IRC_CheckListTooBig(from, count,
+ Conf_MaxListSize,
+ "LIST"))
+ break;
+ if (!IRC_WriteStrClient(from,
+ RPL_LIST_MSG, Client_ID(from),
+ Channel_Name(chan),
+ Channel_MemberCount(chan),
+ Channel_Topic( chan )))
+ return DISCONNECTED;
+ count++;
+ }
}
- chan = Channel_Next( chan );
+ chan = Channel_Next(chan);
}
-
- /* naechsten Namen ermitteln */
- if( Req->argc > 0 ) pattern = strtok( NULL, "," );
- else pattern = NULL;
+
+ /* Get next name ... */
+ if(Req->argc > 0)
+ pattern = strtok(NULL, ",");
+ else
+ pattern = NULL;
}
-
- return IRC_WriteStrClient( from, RPL_LISTEND_MSG, from );
-} /* IRC_LIST */
+ return IRC_WriteStrClient(from, RPL_LISTEND_MSG, Client_ID(from));
+} /* IRC_LIST */
-GLOBAL BOOLEAN
+/**
+ * Handler for the IRC+ "CHANINFO" command.
+ *
+ * @param Client The client from which this command has been received.
+ * @param Req Request structure with prefix and all parameters.
+ * @return CONNECTED or DISCONNECTED.
+ */
+GLOBAL bool
IRC_CHANINFO( CLIENT *Client, REQUEST *Req )
{
+ char modes_add[COMMAND_LEN], l[16];
CLIENT *from;
CHANNEL *chan;
- CHAR *ptr;
+ int arg_topic;
assert( Client != NULL );
assert( Req != NULL );
- /* Falsche Anzahl Parameter? */
- if(( Req->argc < 1 ) || ( Req->argc > 3 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
+ /* Bad number of parameters? */
+ if (Req->argc < 2 || Req->argc == 4 || Req->argc > 5)
+ return IRC_WriteErrClient(Client, ERR_NEEDMOREPARAMS_MSG,
+ Client_ID(Client), Req->command);
- /* From-Server suchen */
- from = Client_Search( Req->prefix );
- if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
+ /* Compatibility kludge */
+ if (Req->argc == 5)
+ arg_topic = 4;
+ else if(Req->argc == 3)
+ arg_topic = 2;
+ else
+ arg_topic = -1;
- /* Channel suchen bzw. erzeugen */
+ _IRC_GET_SENDER_OR_RETURN_(from, Req, Client)
+
+ /* Search or create channel */
chan = Channel_Search( Req->argv[0] );
- if( ! chan ) chan = Channel_Create( Req->argv[0] );
- if( ! chan ) return CONNECTED;
-
- if( Req->argv[1][0] == '+' )
- {
- ptr = Channel_Modes( chan );
- if( ! *ptr )
- {
- /* OK, es sind noch keine Modes gesetzt */
- Channel_SetModes( chan, &Req->argv[1][1] );
- IRC_WriteStrChannelPrefix( Client, chan, from, FALSE, "MODE %s +%s", Req->argv[0], &Req->argv[1][1] );
+ if (!chan)
+ chan = Channel_Create( Req->argv[0] );
+ if (!chan)
+ return CONNECTED;
+
+ if (Req->argv[1][0] == '+') {
+ if (!*Channel_Modes(chan)) {
+ /* OK, this channel doesn't have modes yet,
+ * set the received ones: */
+ Channel_SetModes(chan, &Req->argv[1][1]);
+
+ if(Req->argc == 5) {
+ if(Channel_HasMode(chan, 'k'))
+ Channel_SetKey(chan, Req->argv[2]);
+ if(Channel_HasMode(chan, 'l'))
+ Channel_SetMaxUsers(chan, atol(Req->argv[3]));
+ } else {
+ /* Delete modes which we never want to inherit */
+ Channel_ModeDel(chan, 'l');
+ Channel_ModeDel(chan, 'k');
+ }
+
+ strcpy(modes_add, "");
+ if (Channel_HasMode(chan, 'l')) {
+ snprintf(l, sizeof(l), " %lu",
+ Channel_MaxUsers(chan));
+ strlcat(modes_add, l, sizeof(modes_add));
+ }
+ if (Channel_HasMode(chan, 'k')) {
+ strlcat(modes_add, " ", sizeof(modes_add));
+ strlcat(modes_add, Channel_Key(chan),
+ sizeof(modes_add));
+ }
+
+ /* Inform members of this channel */
+ IRC_WriteStrChannelPrefix(Client, chan, from, false,
+ "MODE %s +%s%s", Req->argv[0],
+ Channel_Modes(chan), modes_add);
}
}
- else Log( LOG_WARNING, "CHANNELINFO: invalid MODE format ignored!" );
-
- if( Req->argc == 3 )
- {
- /* Es wurde auch ein Topic mit uebermittelt */
- ptr = Channel_Topic( chan );
- if( ! *ptr )
- {
- /* OK, es ist bisher kein Topic gesetzt */
- Channel_SetTopic( chan, Req->argv[2] );
- IRC_WriteStrChannelPrefix( Client, chan, from, FALSE, "TOPIC %s :%s", Req->argv[0], Req->argv[2] );
+ else
+ Log(LOG_WARNING, "CHANINFO: invalid MODE format ignored!");
+
+ if (arg_topic > 0) {
+ /* We got a topic */
+ if (!*Channel_Topic(chan) && Req->argv[arg_topic][0]) {
+ /* OK, there is no topic jet */
+ Channel_SetTopic(chan, Client, Req->argv[arg_topic]);
+ IRC_WriteStrChannelPrefix(Client, chan, from, false,
+ "TOPIC %s :%s", Req->argv[0], Channel_Topic(chan));
}
}
- /* an andere Server forwarden */
- IRC_WriteStrServersPrefixFlag( Client, from, 'C', "CHANINFO %s %s :%s", Req->argv[0], Req->argv[1], Req->argv[2] );
+ /* Forward CHANINFO to other servers */
+ if (Req->argc == 5)
+ IRC_WriteStrServersPrefixFlag(Client, from, 'C',
+ "CHANINFO %s %s %s %s :%s",
+ Req->argv[0], Req->argv[1],
+ Req->argv[2], Req->argv[3],
+ Req->argv[4]);
+ else if (Req->argc == 3)
+ IRC_WriteStrServersPrefixFlag(Client, from, 'C',
+ "CHANINFO %s %s :%s",
+ Req->argv[0], Req->argv[1],
+ Req->argv[2]);
+ else
+ IRC_WriteStrServersPrefixFlag(Client, from, 'C',
+ "CHANINFO %s %s",
+ Req->argv[0], Req->argv[1]);
+
return CONNECTED;
} /* IRC_CHANINFO */
-
/* -eof- */
projects / ngircd-alex.git / blobdiff