X-Git-Url: https://arthur.barton.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fngircd%2Fchannel.c;h=d774e576af95882ae134c9b2341a205752709dc9;hb=3913de3cffaa4a3641075d4b4df4aea388bc3717;hp=2d656c8684c720e207dd744576160caff130b3f2;hpb=e2aacff7d4f126ce6a577ea4df7b49dd83b7355b;p=ngircd-alex.git diff --git a/src/ngircd/channel.c b/src/ngircd/channel.c index 2d656c86..d774e576 100644 --- a/src/ngircd/channel.c +++ b/src/ngircd/channel.c @@ -1,6 +1,6 @@ /* * ngIRCd -- The Next Generation IRC Daemon - * Copyright (c)2001-2005 by Alexander Barton (alex@barton.de) + * Copyright (c)2001-2008 by Alexander Barton (alex@barton.de) * * 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 @@ -17,8 +17,6 @@ #include "portab.h" -static char UNUSED id[] = "$Id: channel.c,v 1.57 2006/08/12 11:58:21 fw Exp $"; - #include "imp.h" #include #include @@ -56,7 +54,7 @@ static CL2CHAN *My_Cl2Chan; 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, char *Reason, bool InformServer )); +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 bool Delete_Channel PARAMS(( CHANNEL *Chan )); @@ -70,21 +68,37 @@ 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_GetListInvites(CHANNEL *c) +{ + assert(c != NULL); + return &c->list_invites; +} + + GLOBAL void Channel_InitPredefined( void ) { - /* Vordefinierte persistente Channels erzeugen */ + /* Generate predefined persistent channels */ CHANNEL *chan; char *c; unsigned int i; - + for( i = 0; i < Conf_Channel_Count; i++ ) { - /* Ist ein Name konfiguriert? */ + /* Check for Name configuration */ if( ! Conf_Channel[i].name[0] ) continue; - /* Gueltiger Channel-Name? */ + /* Check for invalid 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 ); @@ -92,7 +106,7 @@ Channel_InitPredefined( void ) continue; } - /* Gibt es den Channel bereits? */ + /* Check if the channel name is already in use */ chan = Channel_Search( Conf_Channel[i].name ); if( chan ) { @@ -115,6 +129,9 @@ Channel_InitPredefined( void ) while (*c) Channel_ModeAdd(chan, *c++); + Channel_SetKey(chan, Conf_Channel[i].key); + Channel_SetMaxUsers(chan, Conf_Channel[i].maxusers); + Log(LOG_INFO, "Created pre-defined channel \"%s\".", Conf_Channel[i].name ); } @@ -129,8 +146,8 @@ Channel_Exit( void ) { CHANNEL *c, *c_next; CL2CHAN *cl2chan, *cl2chan_next; - - /* Channel-Strukturen freigeben */ + + /* free struct Channel */ c = My_Channels; while( c ) { @@ -140,7 +157,7 @@ Channel_Exit( void ) c = c_next; } - /* Channel-Zuordnungstabelle freigeben */ + /* Free Channel allocation table */ cl2chan = My_Cl2Chan; while( c ) { @@ -151,61 +168,92 @@ Channel_Exit( void ) } /* 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 *chan; - - assert( Client != NULL ); - assert( Name != NULL ); - 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; } - 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); - 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; + } + + /* 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 *Client, CLIENT *Origin, const char *Name, const char *Reason ) { CHANNEL *chan; @@ -214,6 +262,7 @@ Channel_Kick( CLIENT *Client, CLIENT *Origin, char *Name, char *Reason ) assert( Name != NULL ); assert( Reason != NULL ); + /* Check that channel exists */ chan = Channel_Search( Name ); if( ! chan ) { @@ -221,26 +270,28 @@ Channel_Kick( CLIENT *Client, CLIENT *Origin, char *Name, char *Reason ) return; } + /* Check that user is on the specified channel */ if( ! Channel_IsMemberOf( chan, Origin )) { IRC_WriteStrClient( Origin, ERR_NOTONCHANNEL_MSG, Client_ID( Origin ), Name ); return; } - /* Is User Channel-Operator? */ + /* Check if user has operator status */ if( ! strchr( Channel_UserModes( chan, Origin ), 'o' )) { IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Name); return; } - /* Ist the kickED User member of channel? */ + /* Check that the client to be kicked is on the specified channel */ if( ! Channel_IsMemberOf( chan, Client )) { IRC_WriteStrClient( Origin, ERR_USERNOTINCHANNEL_MSG, Client_ID( Origin ), Client_ID( Client ), Name ); return; } + /* Kick Client from channel */ Remove_Client( REMOVE_KICK, chan, Client, Origin, Reason, true); } /* Channel_Kick */ @@ -265,12 +316,12 @@ Channel_Quit( CLIENT *Client, char *Reason ) } /* Channel_Quit */ -GLOBAL long +GLOBAL unsigned long Channel_Count( void ) { CHANNEL *c; - long count = 0; - + unsigned long count = 0; + c = My_Channels; while( c ) { @@ -281,11 +332,11 @@ Channel_Count( void ) } /* Channel_Count */ -GLOBAL long +GLOBAL unsigned long Channel_MemberCount( CHANNEL *Chan ) { CL2CHAN *cl2chan; - long count = 0; + unsigned long count = 0; assert( Chan != NULL ); @@ -306,9 +357,9 @@ Channel_CountForUser( CLIENT *Client ) CL2CHAN *cl2chan; int count = 0; - + assert( Client != NULL ); - + cl2chan = My_Cl2Chan; while( cl2chan ) { @@ -320,27 +371,8 @@ 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; @@ -363,7 +395,7 @@ Channel_Key( CHANNEL *Chan ) } /* Channel_Key */ -GLOBAL long +GLOBAL unsigned long Channel_MaxUsers( CHANNEL *Chan ) { assert( Chan != NULL ); @@ -387,10 +419,10 @@ 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; @@ -402,7 +434,7 @@ 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; @@ -462,25 +494,20 @@ 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 */ @@ -613,9 +640,7 @@ 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 */ @@ -628,7 +653,7 @@ Channel_Topic( CHANNEL *Chan ) return ret ? ret : ""; } /* Channel_Topic */ - + #ifndef STRICT_RFC GLOBAL unsigned int @@ -699,7 +724,7 @@ Channel_SetKey( CHANNEL *Chan, char *Key ) GLOBAL void -Channel_SetMaxUsers( CHANNEL *Chan, long Count ) +Channel_SetMaxUsers(CHANNEL *Chan, unsigned long Count) { assert( Chan != NULL ); @@ -708,38 +733,57 @@ Channel_SetMaxUsers( CHANNEL *Chan, long Count ) } /* Channel_SetMaxUsers */ -GLOBAL bool -Channel_Write( CHANNEL *Chan, CLIENT *From, CLIENT *Client, char *Text ) +static bool +Can_Send_To_Channel(CHANNEL *Chan, CLIENT *From) { - bool is_member, has_voice, is_op, ok; + bool is_member, has_voice, is_op; - /* Okay, target is a channel */ is_member = has_voice = is_op = false; - if( Channel_IsMemberOf( Chan, From )) - { + + 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), 'o')) + is_op = 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, but 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 (is_op || has_voice) + return true; + + if (strchr(Channel_Modes(Chan), 'm')) + return false; + + 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 */ + 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 * @@ -792,7 +836,7 @@ 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 ) { @@ -803,7 +847,7 @@ Add_Client( CHANNEL *Chan, CLIENT *Client ) cl2chan->client = Client; strcpy( cl2chan->modes, "" ); - /* Verketten */ + /* concatenate */ cl2chan->next = My_Cl2Chan; My_Cl2Chan = cl2chan; @@ -814,11 +858,11 @@ Add_Client( CHANNEL *Chan, CLIENT *Client ) static bool -Remove_Client( int Type, CHANNEL *Chan, CLIENT *Client, CLIENT *Origin, char *Reason, bool InformServer ) +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 ); @@ -837,7 +881,7 @@ 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 ); @@ -864,7 +908,7 @@ Remove_Client( int Type, CHANNEL *Chan, CLIENT *Client, CLIENT *Origin, char *Re IRC_WriteStrClientPrefix(Client, Origin, "KICK %s %s :%s", c->name, Client_ID( Client ), Reason); } - LogDebug("User \"%s\" has been kicked of \"%s\" by \"%s\": %s.", + LogDebug("User \"%s\" has been kicked off \"%s\" by \"%s\": %s.", Client_Mask( Client ), c->name, Client_ID(Origin), Reason); break; default: /* PART */ @@ -883,16 +927,78 @@ Remove_Client( int Type, CHANNEL *Chan, CLIENT *Client, CLIENT *Origin, char *Re } } - /* 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 */ +GLOBAL bool +Channel_AddBan(CHANNEL *c, const char *mask ) +{ + struct list_head *h = Channel_GetListBans(c); + return Lists_Add(h, mask, false); +} + + +GLOBAL bool +Channel_AddInvite(CHANNEL *c, const char *mask, bool onlyonce) +{ + struct list_head *h = Channel_GetListInvites(c); + return Lists_Add(h, mask, onlyonce); +} + + +static bool +ShowInvitesBans(struct list_head *head, CLIENT *Client, CHANNEL *Channel, bool invite) +{ + struct list_elem *e; + char *msg = invite ? RPL_INVITELIST_MSG : RPL_BANLIST_MSG; + char *msg_end; + + 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); + } + + msg_end = invite ? RPL_ENDOFINVITELIST_MSG : RPL_ENDOFBANLIST_MSG; + 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 ShowInvitesBans(h, Client, Channel, false); +} + + +GLOBAL bool +Channel_ShowInvites( CLIENT *Client, CHANNEL *Channel ) +{ + struct list_head *h; + + assert( Channel != NULL ); + + h = Channel_GetListInvites(Channel); + return ShowInvitesBans(h, Client, Channel, true); +} + + static CL2CHAN * Get_First_Cl2Chan( CLIENT *Client, CHANNEL *Chan ) { @@ -906,7 +1012,7 @@ Get_Next_Cl2Chan( CL2CHAN *Start, CLIENT *Client, CHANNEL *Channel ) CL2CHAN *cl2chan; assert( Client != NULL || Channel != NULL ); - + cl2chan = Start; while( cl2chan ) { @@ -921,8 +1027,8 @@ Get_Next_Cl2Chan( CL2CHAN *Start, CLIENT *Client, CHANNEL *Channel ) static bool Delete_Channel( CHANNEL *Chan ) { - /* Channel-Struktur loeschen */ - + /* delete channel structure */ + CHANNEL *chan, *last_chan; last_chan = NULL; @@ -937,14 +1043,15 @@ Delete_Channel( CHANNEL *Chan ) Log( LOG_DEBUG, "Freed channel structure for \"%s\".", Chan->name ); - /* Invite- und Ban-Lists aufraeumen */ - Lists_DeleteChannel( chan ); + /* free invite and ban lists */ + Lists_Free( &chan->list_bans ); + Lists_Free( &chan->list_invites ); - /* Neu verketten und freigeben */ + /* maintain channel list */ if( last_chan ) last_chan->next = chan->next; else My_Channels = chan->next; free( chan ); - + return true; } /* Delete_Channel */