X-Git-Url: https://arthur.barton.de/cgi-bin/gitweb.cgi?p=ngircd.git;a=blobdiff_plain;f=src%2Fngircd%2Fchannel.c;h=45bf615c29d604b453807e2a1e6c2b07c8c3f02c;hp=aaf38d1b73e856b368cd4baa02dd9a02cce72020;hb=0e63fb3fa7ac4ca048e8c2b648d2be3fd0572311;hpb=70facb7f6e2681d711a599c79a37a3ea2db62bfa diff --git a/src/ngircd/channel.c b/src/ngircd/channel.c index aaf38d1b..45bf615c 100644 --- a/src/ngircd/channel.c +++ b/src/ngircd/channel.c @@ -1,45 +1,45 @@ /* * ngIRCd -- The Next Generation IRC Daemon - * Copyright (c)2001-2005 by Alexander Barton (alex@barton.de) + * Copyright (c)2001-2012 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. - * - * Channel management */ - #define __channel_c__ - #include "portab.h" -static char UNUSED id[] = "$Id: channel.c,v 1.51 2005/07/11 14:11:35 fw Exp $"; +/** + * @file + * Channel management + */ #include "imp.h" #include #include #include +#include +#include #include #include "defines.h" #include "conn-func.h" -#include "client.h" #include "exp.h" #include "channel.h" #include "imp.h" #include "irc-write.h" -#include "resolve.h" #include "conf.h" #include "hash.h" #include "lists.h" #include "log.h" #include "messages.h" +#include "match.h" #include "exp.h" @@ -49,16 +49,18 @@ static char UNUSED id[] = "$Id: channel.c,v 1.51 2005/07/11 14:11:35 fw Exp $"; #define REMOVE_KICK 2 -LOCAL CHANNEL *My_Channels; -LOCAL CL2CHAN *My_Cl2Chan; +static CHANNEL *My_Channels; +static CL2CHAN *My_Cl2Chan; -LOCAL CL2CHAN *Get_Cl2Chan PARAMS(( CHANNEL *Chan, CLIENT *Client )); -LOCAL CL2CHAN *Add_Client PARAMS(( CHANNEL *Chan, CLIENT *Client )); -LOCAL bool Remove_Client PARAMS(( int Type, CHANNEL *Chan, CLIENT *Client, CLIENT *Origin, char *Reason, bool InformServer )); -LOCAL CL2CHAN *Get_First_Cl2Chan PARAMS(( CLIENT *Client, CHANNEL *Chan )); -LOCAL CL2CHAN *Get_Next_Cl2Chan PARAMS(( CL2CHAN *Start, CLIENT *Client, CHANNEL *Chan )); -LOCAL bool Delete_Channel PARAMS(( CHANNEL *Chan )); +static CL2CHAN *Get_Cl2Chan PARAMS(( CHANNEL *Chan, CLIENT *Client )); +static CL2CHAN *Add_Client PARAMS(( CHANNEL *Chan, CLIENT *Client )); +static bool Remove_Client PARAMS(( int Type, CHANNEL *Chan, CLIENT *Client, CLIENT *Origin, const char *Reason, bool InformServer )); +static CL2CHAN *Get_First_Cl2Chan PARAMS(( CLIENT *Client, CHANNEL *Chan )); +static CL2CHAN *Get_Next_Cl2Chan PARAMS(( CL2CHAN *Start, CLIENT *Client, CHANNEL *Chan )); +static void Delete_Channel PARAMS(( CHANNEL *Chan )); +static void Free_Channel PARAMS(( CHANNEL *Chan )); +static void Set_KeyFile PARAMS((CHANNEL *Chan, const char *KeyFile)); GLOBAL void @@ -69,145 +71,244 @@ Channel_Init( void ) } /* Channel_Init */ +GLOBAL struct list_head * +Channel_GetListBans(CHANNEL *c) +{ + assert(c != NULL); + return &c->list_bans; +} + + +GLOBAL struct list_head * +Channel_GetListExcepts(CHANNEL *c) +{ + assert(c != NULL); + return &c->list_excepts; +} + + +GLOBAL struct list_head * +Channel_GetListInvites(CHANNEL *c) +{ + assert(c != NULL); + return &c->list_invites; +} + + +/** + * Generate predefined persistent channels and &SERVER + */ GLOBAL void Channel_InitPredefined( void ) { - /* Vordefinierte persistente Channels erzeugen */ + CHANNEL *new_chan; + const struct Conf_Channel *conf_chan; + const char *c; + size_t i, channel_count = array_length(&Conf_Channels, sizeof(*conf_chan)); - CHANNEL *chan; - char *c; - unsigned int i; - - for( i = 0; i < Conf_Channel_Count; i++ ) - { - /* Ist ein Name konfiguriert? */ - if( ! Conf_Channel[i].name[0] ) continue; + conf_chan = array_start(&Conf_Channels); - /* Gueltiger Channel-Name? */ - if( ! Channel_IsValidName( Conf_Channel[i].name )) - { - Log( LOG_ERR, "Can't create pre-defined channel: invalid name: \"%s\"!", Conf_Channel[i].name ); + assert(channel_count == 0 || conf_chan != NULL); + + for (i = 0; i < channel_count; i++, conf_chan++) { + if (!conf_chan->name[0]) + continue; + if (!Channel_IsValidName(conf_chan->name)) { + Log(LOG_ERR, + "Can't create pre-defined channel: invalid name: \"%s\"", + conf_chan->name); continue; } - /* Gibt es den Channel bereits? */ - chan = Channel_Search( Conf_Channel[i].name ); - if( chan ) - { - Log( LOG_INFO, "Can't create pre-defined channel \"%s\": name already in use.", Conf_Channel[i].name ); + new_chan = Channel_Search(conf_chan->name); + if (new_chan) { + Log(LOG_INFO, + "Can't create pre-defined channel \"%s\": name already in use.", + conf_chan->name); + Set_KeyFile(new_chan, conf_chan->keyfile); continue; } - - /* Channel anlegen */ - chan = Channel_Create( Conf_Channel[i].name ); - if( chan ) - { - Channel_ModeAdd( chan, 'P' ); - Channel_SetTopic( chan, Conf_Channel[i].topic ); - c = Conf_Channel[i].modes; - while( *c ) Channel_ModeAdd( chan, *c++ ); - Log( LOG_INFO, "Created pre-defined channel \"%s\".", Conf_Channel[i].name ); + + new_chan = Channel_Create(conf_chan->name); + if (!new_chan) { + Log(LOG_ERR, "Can't create pre-defined channel \"%s\"!", + conf_chan->name); + continue; } - else Log( LOG_ERR, "Can't create pre-defined channel \"%s\"!", Conf_Channel[i].name ); + Log(LOG_INFO, "Created pre-defined channel \"%s\".", + conf_chan->name); + + Channel_ModeAdd(new_chan, 'P'); + + if (conf_chan->topic[0]) + Channel_SetTopic(new_chan, NULL, conf_chan->topic); + + c = conf_chan->modes; + while (*c) + Channel_ModeAdd(new_chan, *c++); + + Channel_SetKey(new_chan, conf_chan->key); + Channel_SetMaxUsers(new_chan, conf_chan->maxusers); + Set_KeyFile(new_chan, conf_chan->keyfile); } + if (channel_count) + array_free(&Conf_Channels); + + /* Make sure the local &SERVER channel exists */ + if (!Channel_Search("&SERVER")) { + new_chan = Channel_Create("&SERVER"); + if (new_chan) { + Channel_SetModes(new_chan, "mnPt"); + Channel_SetTopic(new_chan, Client_ThisServer(), + "Server Messages"); + } else + Log(LOG_ERR, "Failed to create \"&SERVER\" channel!"); + } else + LogDebug("Required channel \"&SERVER\" already exists, ok."); } /* Channel_InitPredefined */ +static void +Free_Channel(CHANNEL *chan) +{ + array_free(&chan->topic); + array_free(&chan->keyfile); + Lists_Free(&chan->list_bans); + Lists_Free(&chan->list_excepts); + Lists_Free(&chan->list_invites); + + free(chan); +} + + GLOBAL void Channel_Exit( void ) { CHANNEL *c, *c_next; CL2CHAN *cl2chan, *cl2chan_next; - - /* Channel-Strukturen freigeben */ + + /* free struct Channel */ c = My_Channels; - while( c ) - { + while (c) { c_next = c->next; - free( c ); + Free_Channel(c); c = c_next; } - /* Channel-Zuordnungstabelle freigeben */ + /* Free Channel allocation table */ cl2chan = My_Cl2Chan; - while( c ) - { + while (cl2chan) { cl2chan_next = cl2chan->next; - free( cl2chan ); + free(cl2chan); cl2chan = cl2chan_next; } } /* Channel_Exit */ +/** + * Join Channel + * This function lets a client join a channel. First, the function + * checks that the specified channel name is valid and that the client + * isn't already a member. If the specified channel doesn't exist, + * a new channel is created. Client is added to channel by function + * Add_Client(). + */ GLOBAL bool -Channel_Join( CLIENT *Client, char *Name ) +Channel_Join( CLIENT *Client, const char *Name ) { CHANNEL *chan; - - assert( Client != NULL ); - assert( Name != NULL ); - /* Valider Channel-Name? */ - if( ! Channel_IsValidName( Name )) - { - IRC_WriteStrClient( Client, ERR_NOSUCHCHANNEL_MSG, Client_ID( Client ), Name ); + assert(Client != NULL); + assert(Name != NULL); + + /* Check that the channel name is valid */ + if (! Channel_IsValidName(Name)) { + IRC_WriteStrClient(Client, ERR_NOSUCHCHANNEL_MSG, + Client_ID(Client), Name); return false; } - /* Channel suchen */ - chan = Channel_Search( Name ); - if( chan ) - { - /* Ist der Client bereits Mitglied? */ - if( Get_Cl2Chan( chan, Client )) return false; - } - else - { - /* Gibt es noch nicht? Dann neu anlegen: */ - chan = Channel_Create( Name ); - if( ! chan ) return false; + chan = Channel_Search(Name); + if(chan) { + /* Check if the client is already in the channel */ + if (Get_Cl2Chan(chan, Client)) + return false; + } else { + /* If the specified channel does not exist, the channel + * is now created */ + chan = Channel_Create(Name); + if (!chan) + return false; } - /* User dem Channel hinzufuegen */ - if( ! Add_Client( chan, Client )) return false; - else return true; + /* Add user to Channel */ + if (! Add_Client(chan, Client)) + return false; + + return true; } /* Channel_Join */ +/** + * Part client from channel. + * This function lets a client part from a channel. First, the function checks + * if the channel exists and the client is a member of it and sends out + * appropriate error messages if not. The real work is done by the function + * Remove_Client(). + */ GLOBAL bool -Channel_Part( CLIENT *Client, CLIENT *Origin, char *Name, char *Reason ) +Channel_Part(CLIENT * Client, CLIENT * Origin, const char *Name, const char *Reason) { CHANNEL *chan; - assert( Client != NULL ); - assert( Name != NULL ); - assert( Reason != NULL ); + assert(Client != NULL); + assert(Name != NULL); + assert(Reason != NULL); - /* Channel suchen */ - chan = Channel_Search( Name ); - if(( ! chan ) || ( ! Get_Cl2Chan( chan, Client ))) - { - IRC_WriteStrClient( Client, ERR_NOSUCHCHANNEL_MSG, Client_ID( Client ), Name ); + /* Check that specified channel exists */ + chan = Channel_Search(Name); + if (!chan) { + IRC_WriteStrClient(Client, ERR_NOSUCHCHANNEL_MSG, + Client_ID(Client), Name); return false; } - /* User aus Channel entfernen */ - if( ! Remove_Client( REMOVE_PART, chan, Client, Origin, Reason, true)) return false; - else return true; + /* Check that the client is in the channel */ + if (!Get_Cl2Chan(chan, Client)) { + IRC_WriteStrClient(Client, ERR_NOTONCHANNEL_MSG, + Client_ID(Client), Name); + return false; + } + + if (Conf_MorePrivacy) + Reason = ""; + + /* Part client from channel */ + if (!Remove_Client(REMOVE_PART, chan, Client, Origin, Reason, true)) + return false; + else + return true; } /* Channel_Part */ +/** + * Kick user from Channel + */ GLOBAL void -Channel_Kick( CLIENT *Client, CLIENT *Origin, char *Name, char *Reason ) +Channel_Kick(CLIENT *Peer, CLIENT *Target, CLIENT *Origin, const char *Name, + const char *Reason ) { CHANNEL *chan; + char *ptr, *target_modes; + bool can_kick = false; - assert( Client != NULL ); - assert( Origin != NULL ); - assert( Name != NULL ); - assert( Reason != NULL ); + assert(Peer != NULL); + assert(Target != NULL); + assert(Origin != NULL); + assert(Name != NULL); + assert(Reason != NULL); - /* Channel suchen */ + /* Check that channel exists */ chan = Channel_Search( Name ); if( ! chan ) { @@ -215,39 +316,95 @@ Channel_Kick( CLIENT *Client, CLIENT *Origin, char *Name, char *Reason ) return; } - /* Ist der User Mitglied in dem Channel? */ - if( ! Channel_IsMemberOf( chan, Origin )) - { - IRC_WriteStrClient( Origin, ERR_NOTONCHANNEL_MSG, Client_ID( Origin ), Name ); - return; + if (Client_Type(Peer) != CLIENT_SERVER && + Client_Type(Origin) != CLIENT_SERVICE) { + /* Check that user is on the specified channel */ + if (!Channel_IsMemberOf(chan, Origin)) { + IRC_WriteStrClient( Origin, ERR_NOTONCHANNEL_MSG, + Client_ID(Origin), Name); + return; + } } - /* Ist der User Channel-Operator? */ - if( ! strchr( Channel_UserModes( chan, Origin ), 'o' )) - { - IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Name); + /* Check that the client to be kicked is on the specified channel */ + if (!Channel_IsMemberOf(chan, Target)) { + IRC_WriteStrClient(Origin, ERR_USERNOTINCHANNEL_MSG, + Client_ID(Origin), Client_ID(Target), Name ); return; } - /* Ist der Ziel-User Mitglied im Channel? */ - if( ! Channel_IsMemberOf( chan, Client )) - { - IRC_WriteStrClient( Origin, ERR_USERNOTINCHANNEL_MSG, Client_ID( Origin ), Client_ID( Client ), Name ); - return; + if(Client_Type(Peer) == CLIENT_USER) { + /* Channel mode 'Q' and user mode 'q' on target: nobody but + * IRC Operators and servers can kick the target user */ + if ((strchr(Channel_Modes(chan), 'Q') + || Client_HasMode(Target, 'q') + || Client_Type(Target) == CLIENT_SERVICE) + && !Client_HasMode(Origin, 'o')) { + IRC_WriteStrClient(Origin, ERR_KICKDENY_MSG, + Client_ID(Origin), Name, + Client_ID(Target)); + return; + } + + /* Check if client has the rights to kick target */ + ptr = Channel_UserModes(chan, Peer); + target_modes = Channel_UserModes(chan, Target); + while(*ptr) { + /* Owner can kick everyone */ + if ( *ptr == 'q') { + can_kick = true; + break; + } + /* Admin can't kick owner */ + if ( *ptr == 'a' ) { + if (!strchr(target_modes, 'q')) { + can_kick = true; + break; + } + } + /* Op can't kick owner | admin */ + if ( *ptr == 'o' ) { + if (!strchr(target_modes, 'q') && + !strchr(target_modes, 'a')) { + can_kick = true; + break; + } + } + /* Half Op can't kick owner | admin | op */ + if ( *ptr == 'h' ) { + if (!strchr(target_modes, 'q') && + !strchr(target_modes, 'a') && + !strchr(target_modes, 'o')) { + can_kick = true; + break; + } + } + ptr++; + } + + if(!can_kick) { + IRC_WriteStrClient(Origin, ERR_CHANOPPRIVTOOLOW_MSG, + Client_ID(Origin), Name); + return; + } } - Remove_Client( REMOVE_KICK, chan, Client, Origin, Reason, true); + /* Kick Client from channel */ + Remove_Client( REMOVE_KICK, chan, Target, Origin, Reason, true); } /* Channel_Kick */ GLOBAL void -Channel_Quit( CLIENT *Client, char *Reason ) +Channel_Quit( CLIENT *Client, const char *Reason ) { CHANNEL *c, *next_c; assert( Client != NULL ); assert( Reason != NULL ); + if (Conf_MorePrivacy) + Reason = ""; + IRC_WriteStrRelatedPrefix( Client, Client, false, "QUIT :%s", Reason ); c = My_Channels; @@ -260,27 +417,38 @@ Channel_Quit( CLIENT *Client, char *Reason ) } /* Channel_Quit */ -GLOBAL long -Channel_Count( void ) +/** + * Get number of channels this server knows and that are "visible" to + * the given client. If no client is given, all channels will be counted. + * + * @param Client The client to check or NULL. + * @return Number of channels visible to the client. + */ +GLOBAL unsigned long +Channel_CountVisible (CLIENT *Client) { CHANNEL *c; - long count = 0; - + unsigned long count = 0; + c = My_Channels; - while( c ) - { - count++; + while(c) { + if (Client) { + if (!strchr(Channel_Modes(c), 's') + || Channel_IsMemberOf(c, Client)) + count++; + } else + count++; c = c->next; } return count; -} /* Channel_Count */ +} -GLOBAL long +GLOBAL unsigned long Channel_MemberCount( CHANNEL *Chan ) { CL2CHAN *cl2chan; - long count = 0; + unsigned long count = 0; assert( Chan != NULL ); @@ -301,9 +469,9 @@ Channel_CountForUser( CLIENT *Client ) CL2CHAN *cl2chan; int count = 0; - + assert( Client != NULL ); - + cl2chan = My_Cl2Chan; while( cl2chan ) { @@ -315,27 +483,8 @@ Channel_CountForUser( CLIENT *Client ) } /* Channel_CountForUser */ -GLOBAL int -Channel_PCount( void ) -{ - /* Count the number of persistent (mode 'P') channels */ - - CHANNEL *chan; - int count = 0; - - chan = My_Channels; - while( chan ) - { - if( strchr( chan->modes, 'P' )) count++; - chan = chan->next; - } - - return count; -} /* Channel_PCount */ - - -GLOBAL char * -Channel_Name( CHANNEL *Chan ) +GLOBAL const char * +Channel_Name( const CHANNEL *Chan ) { assert( Chan != NULL ); return Chan->name; @@ -358,7 +507,7 @@ Channel_Key( CHANNEL *Chan ) } /* Channel_Key */ -GLOBAL long +GLOBAL unsigned long Channel_MaxUsers( CHANNEL *Chan ) { assert( Chan != NULL ); @@ -382,10 +531,10 @@ Channel_Next( CHANNEL *Chan ) GLOBAL CHANNEL * -Channel_Search( char *Name ) +Channel_Search( const char *Name ) { - /* Channel-Struktur suchen */ - + /* Search channel structure */ + CHANNEL *c; UINT32 search_hash; @@ -397,7 +546,7 @@ Channel_Search( char *Name ) { if( search_hash == c->hash ) { - /* lt. Hash-Wert: Treffer! */ + /* hash hit */ if( strcasecmp( Name, c->name ) == 0 ) return c; } c = c->next; @@ -457,25 +606,20 @@ Channel_GetChannel( CL2CHAN *Cl2Chan ) GLOBAL bool -Channel_IsValidName( char *Name ) +Channel_IsValidName( const char *Name ) { - /* Pruefen, ob Name als Channelname gueltig */ - - char *ptr, badchars[10]; - assert( Name != NULL ); - if(( Name[0] != '#' ) || ( strlen( Name ) >= CHANNEL_NAME_LEN )) return false; +#ifdef STRICT_RFC + if (strlen(Name) <= 1) + return false; +#endif + if (strchr("#&+", Name[0]) == NULL) + return false; + if (strlen(Name) >= CHANNEL_NAME_LEN) + return false; - ptr = Name; - strcpy( badchars, " ,:\007" ); - while( *ptr ) - { - if( strchr( badchars, *ptr )) return false; - ptr++; - } - - return true; + return Name[strcspn(Name, " ,:\007")] == 0; } /* Channel_IsValidName */ @@ -509,13 +653,11 @@ Channel_ModeDel( CHANNEL *Chan, char Mode ) * if the mode was removed return true. * if the channel did not have the mode, return false. */ - char x[2], *p; + char *p; assert( Chan != NULL ); - x[0] = Mode; x[1] = '\0'; - - p = strchr( Chan->modes, x[0] ); + p = strchr( Chan->modes, Mode ); if( ! p ) return false; /* Channel has mode -> delete */ @@ -544,7 +686,7 @@ Channel_UserModeAdd( CHANNEL *Chan, CLIENT *Client, char Mode ) cl2chan = Get_Cl2Chan( Chan, Client ); assert( cl2chan != NULL ); - + x[0] = Mode; x[1] = '\0'; if( ! strchr( cl2chan->modes, x[0] )) { @@ -565,7 +707,7 @@ Channel_UserModeDel( CHANNEL *Chan, CLIENT *Client, char Mode ) */ CL2CHAN *cl2chan; - char x[2], *p; + char *p; assert( Chan != NULL ); assert( Client != NULL ); @@ -573,9 +715,7 @@ Channel_UserModeDel( CHANNEL *Chan, CLIENT *Client, char Mode ) cl2chan = Get_Cl2Chan( Chan, Client ); assert( cl2chan != NULL ); - x[0] = Mode; x[1] = '\0'; - - p = strchr( cl2chan->modes, x[0] ); + p = strchr( cl2chan->modes, Mode ); if( ! p ) return false; /* Client has Mode -> delete */ @@ -592,7 +732,7 @@ GLOBAL char * Channel_UserModes( CHANNEL *Chan, CLIENT *Client ) { /* return Users' Channel-Modes */ - + CL2CHAN *cl2chan; assert( Chan != NULL ); @@ -612,32 +752,78 @@ Channel_IsMemberOf( CHANNEL *Chan, CLIENT *Client ) assert( Chan != NULL ); assert( Client != NULL ); - - if( Get_Cl2Chan( Chan, Client )) return true; - else return false; + return Get_Cl2Chan(Chan, Client) != NULL; } /* Channel_IsMemberOf */ GLOBAL char * Channel_Topic( CHANNEL *Chan ) { + char *ret; assert( Chan != NULL ); - return Chan->topic; + ret = array_start(&Chan->topic); + return ret ? ret : ""; } /* Channel_Topic */ +#ifndef STRICT_RFC + +GLOBAL unsigned int +Channel_TopicTime(CHANNEL *Chan) +{ + assert(Chan != NULL); + return (unsigned int) Chan->topic_time; +} /* Channel_TopicTime */ + + +GLOBAL char * +Channel_TopicWho(CHANNEL *Chan) +{ + assert(Chan != NULL); + return Chan->topic_who; +} /* Channel_TopicWho */ + + +GLOBAL unsigned int +Channel_CreationTime(CHANNEL *Chan) +{ + assert(Chan != NULL); + return (unsigned int) Chan->creation_time; +} /* Channel_CreationTime */ + +#endif + + GLOBAL void -Channel_SetTopic( CHANNEL *Chan, char *Topic ) +Channel_SetTopic(CHANNEL *Chan, CLIENT *Client, const char *Topic) { + size_t len; assert( Chan != NULL ); assert( Topic != NULL ); - - strlcpy( Chan->topic, Topic, sizeof( Chan->topic )); + + len = strlen(Topic); + if (len < array_bytes(&Chan->topic)) + array_free(&Chan->topic); + + if (len >= COMMAND_LEN || !array_copyb(&Chan->topic, Topic, len+1)) + Log(LOG_WARNING, "could not set new Topic \"%s\" on %s: %s", + Topic, Chan->name, strerror(errno)); +#ifndef STRICT_RFC + Chan->topic_time = time(NULL); + if (Client != NULL && Client_Type(Client) != CLIENT_SERVER) + strlcpy(Chan->topic_who, Client_ID(Client), + sizeof Chan->topic_who); + else + strlcpy(Chan->topic_who, DEFAULT_TOPIC_ID, + sizeof Chan->topic_who); +#else + (void) Client; +#endif } /* Channel_SetTopic */ GLOBAL void -Channel_SetModes( CHANNEL *Chan, char *Modes ) +Channel_SetModes( CHANNEL *Chan, const char *Modes ) { assert( Chan != NULL ); assert( Modes != NULL ); @@ -647,68 +833,115 @@ Channel_SetModes( CHANNEL *Chan, char *Modes ) GLOBAL void -Channel_SetKey( CHANNEL *Chan, char *Key ) +Channel_SetKey( CHANNEL *Chan, const char *Key ) { assert( Chan != NULL ); assert( Key != NULL ); strlcpy( Chan->key, Key, sizeof( Chan->key )); - Log( LOG_DEBUG, "Channel %s: Key is now \"%s\".", Chan->name, Chan->key ); + LogDebug("Channel %s: Key is now \"%s\".", Chan->name, Chan->key ); } /* Channel_SetKey */ GLOBAL void -Channel_SetMaxUsers( CHANNEL *Chan, long Count ) +Channel_SetMaxUsers(CHANNEL *Chan, unsigned long Count) { assert( Chan != NULL ); Chan->maxusers = Count; - Log( LOG_DEBUG, "Channel %s: Member limit is now %ld.", Chan->name, Chan->maxusers ); + LogDebug("Channel %s: Member limit is now %lu.", Chan->name, Chan->maxusers ); } /* Channel_SetMaxUsers */ -GLOBAL bool -Channel_Write( CHANNEL *Chan, CLIENT *From, CLIENT *Client, char *Text ) +/** + * Check if a client is allowed to send to a specific channel. + * + * @param Chan The channel to check. + * @param From The client that wants to send. + * @return true if the client is allowed to send, false otherwise. + */ +static bool +Can_Send_To_Channel(CHANNEL *Chan, CLIENT *From) { - bool is_member, has_voice, is_op, ok; + bool is_member, has_voice, is_halfop, is_op, is_chanadmin, is_owner; - /* Okay, target is a channel */ - is_member = has_voice = is_op = false; - if( Channel_IsMemberOf( Chan, From )) - { + is_member = has_voice = is_halfop = is_op = is_chanadmin = is_owner = false; + + /* The server itself always can send messages :-) */ + if (Client_ThisServer() == From) + return true; + + if (Channel_IsMemberOf(Chan, From)) { is_member = true; - if( strchr( Channel_UserModes( Chan, From ), 'v' )) has_voice = true; - if( strchr( Channel_UserModes( Chan, From ), 'o' )) is_op = true; + if (strchr(Channel_UserModes(Chan, From), 'v')) + has_voice = true; + if (strchr(Channel_UserModes(Chan, From), 'h')) + is_halfop = true; + if (strchr(Channel_UserModes(Chan, From), 'o')) + is_op = true; + if (strchr(Channel_UserModes(Chan, From), 'a')) + is_chanadmin = true; + if (strchr(Channel_UserModes(Chan, From), 'q')) + is_owner = true; } - /* Is the client allowed to write to channel? */ - ok = true; - if( strchr( Channel_Modes( Chan ), 'n' ) && ( ! is_member )) ok = false; - if( strchr( Channel_Modes( Chan ), 'm' ) && ( ! is_op ) && ( ! has_voice )) ok = false; - - /* Is the client banned? */ - if( Lists_CheckBanned( From, Chan )) - { - /* Client is banned, bus is he channel operator or has voice? */ - if(( ! has_voice ) && ( ! is_op )) ok = false; + /* + * Is the client allowed to write to channel? + * + * If channel mode n set: non-members cannot send to channel. + * If channel mode m set: need voice. + */ + if (strchr(Channel_Modes(Chan), 'n') && !is_member) + return false; + + if (strchr(Channel_Modes(Chan), 'M') && !Client_HasMode(From, 'R') + && !Client_HasMode(From, 'o')) + return false; + + if (has_voice || is_halfop || is_op || is_chanadmin || is_owner) + return true; + + if (strchr(Channel_Modes(Chan), 'm')) + return false; + + if (Lists_Check(&Chan->list_excepts, From)) + return true; + + return !Lists_Check(&Chan->list_bans, From); +} + + +GLOBAL bool +Channel_Write(CHANNEL *Chan, CLIENT *From, CLIENT *Client, const char *Command, + bool SendErrors, const char *Text) +{ + if (!Can_Send_To_Channel(Chan, From)) { + if (! SendErrors) + return CONNECTED; /* no error, see RFC 2812 */ + if (strchr(Channel_Modes(Chan), 'M')) + return IRC_WriteStrClient(From, ERR_NEEDREGGEDNICK_MSG, + Client_ID(From), Channel_Name(Chan)); + else + return IRC_WriteStrClient(From, ERR_CANNOTSENDTOCHAN_MSG, + Client_ID(From), Channel_Name(Chan)); } - if( ! ok ) return IRC_WriteStrClient( From, ERR_CANNOTSENDTOCHAN_MSG, Client_ID( From ), Channel_Name( Chan )); + if (Client_Conn(From) > NONE) + Conn_UpdateIdle(Client_Conn(From)); - /* Send text */ - if( Client_Conn( From ) > NONE ) Conn_UpdateIdle( Client_Conn( From )); - return IRC_WriteStrChannelPrefix( Client, Chan, From, true, "PRIVMSG %s :%s", Channel_Name( Chan ), Text ); -} /* Channel_Write */ + return IRC_WriteStrChannelPrefix(Client, Chan, From, true, + "%s %s :%s", Command, Channel_Name(Chan), Text); +} GLOBAL CHANNEL * -Channel_Create( char *Name ) +Channel_Create( const char *Name ) { /* Create new CHANNEL structure and add it to linked list */ CHANNEL *c; assert( Name != NULL ); - + c = (CHANNEL *)malloc( sizeof( CHANNEL )); if( ! c ) { @@ -719,15 +952,16 @@ Channel_Create( char *Name ) strlcpy( c->name, Name, sizeof( c->name )); c->hash = Hash( c->name ); c->next = My_Channels; +#ifndef STRICT_RFC + c->creation_time = time(NULL); +#endif My_Channels = c; - - Log( LOG_DEBUG, "Created new channel structure for \"%s\".", Name ); - + LogDebug("Created new channel structure for \"%s\".", Name); return c; } /* Channel_Create */ -LOCAL CL2CHAN * +static CL2CHAN * Get_Cl2Chan( CHANNEL *Chan, CLIENT *Client ) { CL2CHAN *cl2chan; @@ -745,7 +979,7 @@ Get_Cl2Chan( CHANNEL *Chan, CLIENT *Client ) } /* Get_Cl2Chan */ -LOCAL CL2CHAN * +static CL2CHAN * Add_Client( CHANNEL *Chan, CLIENT *Client ) { CL2CHAN *cl2chan; @@ -753,7 +987,7 @@ Add_Client( CHANNEL *Chan, CLIENT *Client ) assert( Chan != NULL ); assert( Client != NULL ); - /* neue CL2CHAN-Struktur anlegen */ + /* Create new CL2CHAN structure */ cl2chan = (CL2CHAN *)malloc( sizeof( CL2CHAN )); if( ! cl2chan ) { @@ -764,27 +998,32 @@ Add_Client( CHANNEL *Chan, CLIENT *Client ) cl2chan->client = Client; strcpy( cl2chan->modes, "" ); - /* Verketten */ + /* concatenate */ cl2chan->next = My_Cl2Chan; My_Cl2Chan = cl2chan; - Log( LOG_DEBUG, "User \"%s\" joined channel \"%s\".", Client_Mask( Client ), Chan->name ); + LogDebug("User \"%s\" joined channel \"%s\".", Client_Mask(Client), Chan->name); return cl2chan; } /* Add_Client */ -LOCAL bool -Remove_Client( int Type, CHANNEL *Chan, CLIENT *Client, CLIENT *Origin, char *Reason, bool InformServer ) +static bool +Remove_Client( int Type, CHANNEL *Chan, CLIENT *Client, CLIENT *Origin, const char *Reason, bool InformServer ) { CL2CHAN *cl2chan, *last_cl2chan; CHANNEL *c; - + assert( Chan != NULL ); assert( Client != NULL ); assert( Origin != NULL ); assert( Reason != NULL ); + /* Do not inform other servers if the channel is local to this server, + * regardless of what the caller requested! */ + if(InformServer) + InformServer = !Channel_IsLocal(Chan); + last_cl2chan = NULL; cl2chan = My_Cl2Chan; while( cl2chan ) @@ -798,7 +1037,7 @@ Remove_Client( int Type, CHANNEL *Chan, CLIENT *Client, CLIENT *Origin, char *Re c = cl2chan->channel; assert( c != NULL ); - /* Aus Verkettung loesen und freigeben */ + /* maintain cl2chan list */ if( last_cl2chan ) last_cl2chan->next = cl2chan->next; else My_Cl2Chan = cl2chan->next; free( cl2chan ); @@ -806,51 +1045,232 @@ Remove_Client( int Type, CHANNEL *Chan, CLIENT *Client, CLIENT *Origin, char *Re switch( Type ) { case REMOVE_QUIT: - /* QUIT: andere Server wurden bereits informiert, vgl. Client_Destroy(); - * hier also "nur" noch alle User in betroffenen Channeln infomieren */ + /* QUIT: other servers have already been notified, + * see Client_Destroy(); so only inform other clients + * in same channel. */ assert( InformServer == false ); - Log( LOG_DEBUG, "User \"%s\" left channel \"%s\" (%s).", Client_Mask( Client ), c->name, Reason ); + LogDebug("User \"%s\" left channel \"%s\" (%s).", + Client_Mask( Client ), c->name, Reason ); break; case REMOVE_KICK: - /* User wurde geKICKed: ggf. andere Server sowie alle betroffenen User - * im entsprechenden Channel informieren */ - if( InformServer ) IRC_WriteStrServersPrefix( Client_NextHop( Origin ), Origin, "KICK %s %s :%s", c->name, Client_ID( Client ), Reason ); - IRC_WriteStrChannelPrefix( Client, c, Origin, false, "KICK %s %s :%s", c->name, Client_ID( Client ), Reason ); - if(( Client_Conn( Client ) > NONE ) && ( Client_Type( Client ) == CLIENT_USER )) IRC_WriteStrClientPrefix( Client, Origin, "KICK %s %s :%s", c->name, Client_ID( Client ), Reason ); - Log( LOG_DEBUG, "User \"%s\" has been kicked of \"%s\" by \"%s\": %s.", Client_Mask( Client ), c->name, Client_ID( Origin ), Reason ); + /* User was KICKed: inform other servers (public + * channels) and all users in the channel */ + if( InformServer ) + IRC_WriteStrServersPrefix( Client_NextHop( Origin ), + Origin, "KICK %s %s :%s", c->name, Client_ID( Client ), Reason); + IRC_WriteStrChannelPrefix(Client, c, Origin, false, "KICK %s %s :%s", + c->name, Client_ID( Client ), Reason ); + if ((Client_Conn(Client) > NONE) && + (Client_Type(Client) == CLIENT_USER)) + { + IRC_WriteStrClientPrefix(Client, Origin, "KICK %s %s :%s", + c->name, Client_ID( Client ), Reason); + } + LogDebug("User \"%s\" has been kicked off \"%s\" by \"%s\": %s.", + Client_Mask( Client ), c->name, Client_ID(Origin), Reason); break; - default: - /* PART */ - if( InformServer ) IRC_WriteStrServersPrefix( Origin, Client, "PART %s :%s", c->name, Reason ); - IRC_WriteStrChannelPrefix( Origin, c, Client, false, "PART %s :%s", c->name, Reason ); - if(( Client_Conn( Origin ) > NONE ) && ( Client_Type( Origin ) == CLIENT_USER )) IRC_WriteStrClientPrefix( Origin, Client, "PART %s :%s", c->name, Reason ); - Log( LOG_DEBUG, "User \"%s\" left channel \"%s\" (%s).", Client_Mask( Client ), c->name, Reason ); + default: /* PART */ + if (Conf_MorePrivacy) + Reason = ""; + + if (InformServer) + IRC_WriteStrServersPrefix(Origin, Client, "PART %s :%s", c->name, Reason); + + IRC_WriteStrChannelPrefix(Origin, c, Client, false, "PART %s :%s", + c->name, Reason); + + if ((Client_Conn(Origin) > NONE) && + (Client_Type(Origin) == CLIENT_USER)) + { + IRC_WriteStrClientPrefix( Origin, Client, "PART %s :%s", c->name, Reason); + LogDebug("User \"%s\" left channel \"%s\" (%s).", + Client_Mask(Client), c->name, Reason); + } } - /* Wenn Channel nun leer und nicht pre-defined: loeschen */ + /* When channel is empty and is not pre-defined, delete */ if( ! strchr( Channel_Modes( Chan ), 'P' )) { if( ! Get_First_Cl2Chan( NULL, Chan )) Delete_Channel( Chan ); } - + return true; } /* Remove_Client */ -LOCAL CL2CHAN * +GLOBAL bool +Channel_AddBan(CHANNEL *c, const char *mask ) +{ + struct list_head *h = Channel_GetListBans(c); + LogDebug("Adding \"%s\" to \"%s\" ban list", mask, Channel_Name(c)); + return Lists_Add(h, mask, false, NULL); +} + + +GLOBAL bool +Channel_AddExcept(CHANNEL *c, const char *mask ) +{ + struct list_head *h = Channel_GetListExcepts(c); + LogDebug("Adding \"%s\" to \"%s\" exception list", mask, Channel_Name(c)); + return Lists_Add(h, mask, false, NULL); +} + + +GLOBAL bool +Channel_AddInvite(CHANNEL *c, const char *mask, bool onlyonce) +{ + struct list_head *h = Channel_GetListInvites(c); + LogDebug("Adding \"%s\" to \"%s\" invite list", mask, Channel_Name(c)); + return Lists_Add(h, mask, onlyonce, NULL); +} + + +static bool +ShowChannelList(struct list_head *head, CLIENT *Client, CHANNEL *Channel, + char *msg, char *msg_end) +{ + struct list_elem *e; + + assert (Client != NULL); + assert (Channel != NULL); + + e = Lists_GetFirst(head); + while (e) { + if (!IRC_WriteStrClient(Client, msg, Client_ID(Client), + Channel_Name(Channel), + Lists_GetMask(e))) + return DISCONNECTED; + e = Lists_GetNext(e); + } + + return IRC_WriteStrClient(Client, msg_end, Client_ID(Client), + Channel_Name(Channel)); +} + + +GLOBAL bool +Channel_ShowBans( CLIENT *Client, CHANNEL *Channel ) +{ + struct list_head *h; + + assert( Channel != NULL ); + + h = Channel_GetListBans(Channel); + return ShowChannelList(h, Client, Channel, RPL_BANLIST_MSG, + RPL_ENDOFBANLIST_MSG); +} + + +GLOBAL bool +Channel_ShowExcepts( CLIENT *Client, CHANNEL *Channel ) +{ + struct list_head *h; + + assert( Channel != NULL ); + + h = Channel_GetListExcepts(Channel); + return ShowChannelList(h, Client, Channel, RPL_EXCEPTLIST_MSG, + RPL_ENDOFEXCEPTLIST_MSG); +} + + +GLOBAL bool +Channel_ShowInvites( CLIENT *Client, CHANNEL *Channel ) +{ + struct list_head *h; + + assert( Channel != NULL ); + + h = Channel_GetListInvites(Channel); + return ShowChannelList(h, Client, Channel, RPL_INVITELIST_MSG, + RPL_ENDOFINVITELIST_MSG); +} + + +/** + * Log a message to the local &SERVER channel, if it exists. + */ +GLOBAL void +Channel_LogServer(const char *msg) +{ + CHANNEL *sc; + CLIENT *c; + + assert(msg != NULL); + + sc = Channel_Search("&SERVER"); + if (!sc) + return; + + c = Client_ThisServer(); + Channel_Write(sc, c, c, "PRIVMSG", false, msg); +} /* Channel_LogServer */ + + +GLOBAL bool +Channel_CheckKey(CHANNEL *Chan, CLIENT *Client, const char *Key) +{ + char *file_name, line[COMMAND_LEN], *nick, *pass; + FILE *fd; + + assert(Chan != NULL); + assert(Client != NULL); + assert(Key != NULL); + + if (!strchr(Chan->modes, 'k')) + return true; + if (*Key == '\0') + return false; + if (strcmp(Chan->key, Key) == 0) + return true; + + file_name = array_start(&Chan->keyfile); + if (!file_name) + return false; + fd = fopen(file_name, "r"); + if (!fd) { + Log(LOG_ERR, "Can't open channel key file \"%s\" for %s: %s", + file_name, Chan->name, strerror(errno)); + return false; + } + + while (fgets(line, (int)sizeof(line), fd) != NULL) { + ngt_TrimStr(line); + if (! (nick = strchr(line, ':'))) + continue; + *nick++ = '\0'; + if (!Match(line, Client_User(Client))) + continue; + if (! (pass = strchr(nick, ':'))) + continue; + *pass++ = '\0'; + if (!Match(nick, Client_ID(Client))) + continue; + if (strcmp(Key, pass) != 0) + continue; + + fclose(fd); + return true; + } + fclose(fd); + return false; +} /* Channel_CheckKey */ + + +static CL2CHAN * Get_First_Cl2Chan( CLIENT *Client, CHANNEL *Chan ) { return Get_Next_Cl2Chan( My_Cl2Chan, Client, Chan ); } /* Get_First_Cl2Chan */ -LOCAL CL2CHAN * +static CL2CHAN * Get_Next_Cl2Chan( CL2CHAN *Start, CLIENT *Client, CHANNEL *Channel ) { CL2CHAN *cl2chan; assert( Client != NULL || Channel != NULL ); - + cl2chan = Start; while( cl2chan ) { @@ -862,35 +1282,64 @@ Get_Next_Cl2Chan( CL2CHAN *Start, CLIENT *Client, CHANNEL *Channel ) } /* Get_Next_Cl2Chan */ -LOCAL bool -Delete_Channel( CHANNEL *Chan ) +/** + * Remove a channel and free all of its data structures. + */ +static void +Delete_Channel(CHANNEL *Chan) { - /* Channel-Struktur loeschen */ - CHANNEL *chan, *last_chan; last_chan = NULL; chan = My_Channels; - while( chan ) - { - if( chan == Chan ) break; + while (chan) { + if (chan == Chan) + break; last_chan = chan; chan = chan->next; } - if( ! chan ) return false; - Log( LOG_DEBUG, "Freed channel structure for \"%s\".", Chan->name ); + assert(chan != NULL); + if (!chan) + return; - /* Invite- und Ban-Lists aufraeumen */ - Lists_DeleteChannel( chan ); + /* maintain channel list */ + if (last_chan) + last_chan->next = chan->next; + else + My_Channels = chan->next; - /* Neu verketten und freigeben */ - if( last_chan ) last_chan->next = chan->next; - else My_Channels = chan->next; - free( chan ); - - return true; + LogDebug("Freed channel structure for \"%s\".", Chan->name); + Free_Channel(Chan); } /* Delete_Channel */ +static void +Set_KeyFile(CHANNEL *Chan, const char *KeyFile) +{ + size_t len; + + assert(Chan != NULL); + assert(KeyFile != NULL); + + len = strlen(KeyFile); + if (len < array_bytes(&Chan->keyfile)) { + Log(LOG_INFO, "Channel key file of %s removed.", Chan->name); + array_free(&Chan->keyfile); + } + + if (len < 1) + return; + + if (!array_copyb(&Chan->keyfile, KeyFile, len+1)) + Log(LOG_WARNING, + "Could not set new channel key file \"%s\" for %s: %s", + KeyFile, Chan->name, strerror(errno)); + else + Log(LOG_INFO|LOG_snotice, + "New local channel key file \"%s\" for %s activated.", + KeyFile, Chan->name); +} /* Set_KeyFile */ + + /* -eof- */