- new (and much more flexible!) MODE parser

This commit is contained in:
Alexander Barton 2002-12-15 15:51:24 +00:00
parent 25ca2b3cc5
commit 80c6dc86ed
1 changed files with 377 additions and 315 deletions

View File

@ -14,7 +14,7 @@
#include "portab.h" #include "portab.h"
static char UNUSED id[] = "$Id: irc-mode.c,v 1.19 2002/12/14 13:36:19 alex Exp $"; static char UNUSED id[] = "$Id: irc-mode.c,v 1.20 2002/12/15 15:51:24 alex Exp $";
#include "imp.h" #include "imp.h"
#include <assert.h> #include <assert.h>
@ -36,6 +36,9 @@ static char UNUSED id[] = "$Id: irc-mode.c,v 1.19 2002/12/14 13:36:19 alex Exp $
#include "irc-mode.h" #include "irc-mode.h"
LOCAL BOOLEAN Client_Mode PARAMS(( CLIENT *Client, REQUEST *Req, CLIENT *Origin, CLIENT *Target ));
LOCAL BOOLEAN Channel_Mode PARAMS(( CLIENT *Client, REQUEST *Req, CLIENT *Origin, CHANNEL *Channel ));
LOCAL BOOLEAN Add_Invite PARAMS(( CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, CHAR *Pattern )); LOCAL BOOLEAN Add_Invite PARAMS(( CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, CHAR *Pattern ));
LOCAL BOOLEAN Add_Ban PARAMS(( CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, CHAR *Pattern )); LOCAL BOOLEAN Add_Ban PARAMS(( CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel, CHAR *Pattern ));
@ -48,385 +51,444 @@ LOCAL BOOLEAN Send_ListChange PARAMS(( CHAR *Mode, CLIENT *Prefix, CLIENT *Clien
GLOBAL BOOLEAN GLOBAL BOOLEAN
IRC_MODE( CLIENT *Client, REQUEST *Req ) IRC_MODE( CLIENT *Client, REQUEST *Req )
{ {
CHAR *mode_ptr, the_modes[CLIENT_MODE_LEN], x[2]; CLIENT *cl, *origin;
CLIENT *cl, *chan_cl, *prefix;
BOOLEAN set, ok, modeok;
CHANNEL *chan; CHANNEL *chan;
assert( Client != NULL ); assert( Client != NULL );
assert( Req != NULL ); assert( Req != NULL );
cl = chan_cl = prefix = NULL; /* No parameters? */
chan = NULL;
/* Keine Parameter? */
if( Req->argc < 1 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command ); if( Req->argc < 1 ) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
/* Ziel suchen: Client bzw. Channel */ /* Origin for answers */
if( Client_Type( Client ) == CLIENT_SERVER )
{
origin = Client_Search( Req->prefix );
if( ! origin ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
}
else origin = Client;
/* Channel or user mode? */
cl = chan = NULL;
if( Client_IsValidNick( Req->argv[0] )) cl = Client_Search( Req->argv[0] ); if( Client_IsValidNick( Req->argv[0] )) cl = Client_Search( Req->argv[0] );
if( Channel_IsValidName( Req->argv[0] )) chan = Channel_Search( Req->argv[0] ); if( Channel_IsValidName( Req->argv[0] )) chan = Channel_Search( Req->argv[0] );
/* Kein Ziel gefunden? */ if( cl ) return Client_Mode( Client, Req, origin, cl );
if(( ! cl ) && ( ! chan )) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->argv[0] ); if( chan ) return Channel_Mode( Client, Req, origin, chan );
assert(( cl && chan ) != TRUE ); /* No target found! */
return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->argv[0] );
} /* IRC_MODE */
/* Falsche Anzahl Parameter? */
if(( cl ) && ( Req->argc > 2 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
if(( chan ) && ( Req->argc > 3 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
/* Prefix fuer Antworten etc. ermitteln */ LOCAL BOOLEAN
if( Client_Type( Client ) == CLIENT_SERVER ) Client_Mode( CLIENT *Client, REQUEST *Req, CLIENT *Origin, CLIENT *Target )
{ {
prefix = Client_Search( Req->prefix ); /* Handle client mode requests */
if( ! prefix ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
}
else prefix = Client;
if(( chan ) && (( Req->argc == 2 ) || ( Req->argc == 3 ))) CHAR the_modes[COMMAND_LEN], x[2], *mode_ptr;
{ BOOLEAN ok, set;
/* pruefen, ob "Listen-Operation": Invite, Ban */ INT mode_arg;
if(( Req->argv[1][0] == '-' ) || ( Req->argv[1][0] == '+' )) mode_ptr = &Req->argv[1][1];
else mode_ptr = &Req->argv[1][0];
if( Req->argc == 2 ) /* Is the client allowed to request or change the modes? */
{
/* Liste anzeigen */
if( *mode_ptr == 'I' ) return Lists_ShowInvites( prefix, chan );
if( *mode_ptr == 'b' ) return Lists_ShowBans( prefix, chan );
}
else
{
/* Listen veraendern */
if( Client_Type( Client ) == CLIENT_USER )
{
/* Ist der User Channel-Operator? */
modeok = FALSE;
if( strchr( Channel_UserModes( chan, Client ), 'o' )) modeok = TRUE;
if( Conf_OperCanMode )
{
/* auch IRC-Operatoren duerfen MODE verwenden */
if( Client_OperByMe( Client )) modeok = TRUE;
}
if( ! modeok )
{
Log( LOG_DEBUG, "Can't change modes: \"%s\" is not operator on %s!", Client_ID( Client ), Channel_Name( chan ));
return IRC_WriteStrClient( Client, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Client ), Channel_Name( chan ));
}
}
if( Req->argv[1][0] == '+' )
{
/* Listen-Eintrag hinzufuegen */
if( *mode_ptr == 'I' ) return Add_Invite( prefix, Client, chan, Req->argv[2] );
if( *mode_ptr == 'b' ) return Add_Ban( prefix, Client, chan, Req->argv[2] );
}
else if( Req->argv[1][0] == '-' )
{
/* Listen-Eintrag loeschen */
if( *mode_ptr == 'I' ) return Del_Invite( prefix, Client, chan, Req->argv[2] );
if( *mode_ptr == 'b' ) return Del_Ban( prefix, Client, chan, Req->argv[2] );
}
}
}
/* Client ermitteln, wenn bei Channel-Modes mit 3 Parametern */
if(( chan ) && (Req->argc == 3 ))
{
chan_cl = Client_Search( Req->argv[2] );
if( ! chan_cl ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->argv[0] );
}
/* Wenn Anfragender ein User ist: Zugriff erlaubt? */
if( Client_Type( Client ) == CLIENT_USER ) if( Client_Type( Client ) == CLIENT_USER )
{ {
if( cl ) /* Users are only allowed to manipulate their own modes! */
{ if( Target != Client ) return IRC_WriteStrClient( Client, ERR_USERSDONTMATCH_MSG, Client_ID( Client ));
/* MODE ist nur fuer sich selber zulaessig! */
if( cl != Client ) return IRC_WriteStrClient( Client, ERR_USERSDONTMATCH_MSG, Client_ID( Client ));
}
if( chan )
{
/* Darf der User die Channel-Modes ermitteln? */
}
} }
/* Werden die Modes "nur" erfragt? */ /* Mode request: let's answer it :-) */
if(( cl ) && ( Req->argc == 1 )) return IRC_WriteStrClient( Client, RPL_UMODEIS_MSG, Client_ID( Client ), Client_Modes( cl )); if( Req->argc == 1 ) return IRC_WriteStrClient( Origin, RPL_UMODEIS_MSG, Client_ID( Origin ), Client_Modes( Target ));
if(( chan ) && ( Req->argc == 1 )) return IRC_WriteStrClient( Client, RPL_CHANNELMODEIS_MSG, Client_ID( Client ), Channel_Name( chan ), Channel_Modes( chan ));
mode_ptr = Req->argv[1]; mode_arg = 1;
mode_ptr = Req->argv[mode_arg];
/* Sollen Modes gesetzt oder geloescht werden? */ /* Initial state: set or unset modes? */
if( cl ) if( *mode_ptr == '+' ) set = TRUE;
{ else if( *mode_ptr == '-' ) set = FALSE;
if( *mode_ptr == '+' ) set = TRUE; else return IRC_WriteStrClient( Origin, ERR_UMODEUNKNOWNFLAG_MSG, Client_ID( Origin ));
else if( *mode_ptr == '-' ) set = FALSE;
else return IRC_WriteStrClient( Client, ERR_UMODEUNKNOWNFLAG_MSG, Client_ID( Client ));
mode_ptr++;
}
else
{
if( *mode_ptr == '-' ) set = FALSE;
else set = TRUE;
if(( *mode_ptr == '-' ) || ( *mode_ptr == '+' )) mode_ptr++;
}
/* Reply-String mit Aenderungen vorbereiten */ /* Prepare reply string */
if( set ) strcpy( the_modes, "+" ); if( set ) strcpy( the_modes, "+" );
else strcpy( the_modes, "-" ); else strcpy( the_modes, "-" );
ok = TRUE;
x[1] = '\0'; x[1] = '\0';
while( *mode_ptr ) ok = CONNECTED;
while( mode_ptr )
{ {
mode_ptr++;
if( ! *mode_ptr )
{
/* Try next argument if there's any */
mode_arg++;
if( mode_arg < Req->argc ) mode_ptr = Req->argv[mode_arg];
else break;
}
switch( *mode_ptr )
{
case '+':
case '-':
if((( *mode_ptr == '+' ) && ( ! set )) || (( *mode_ptr == '-' ) && ( set )))
{
/* Action modifier ("+"/"-") must be changed ... */
if(( the_modes[strlen( the_modes ) - 1] == '+' ) || ( the_modes[strlen( the_modes ) - 1] == '-' ))
{
/* Adjust last action modifier in result */
the_modes[strlen( the_modes ) - 1] = *mode_ptr;
}
else
{
/* Append modifier character to result string */
x[0] = *mode_ptr; strcat( the_modes, x );
}
if( *mode_ptr == '+' ) set = TRUE;
else set = FALSE;
}
continue;
}
x[0] = '\0'; x[0] = '\0';
if( Client_Type( Client ) == CLIENT_SERVER ) if( Client_Type( Client ) == CLIENT_SERVER )
{ {
/* Befehl kommt von einem Server, daher /* MODE request was received from a server:
* trauen wir ihm "unbesehen" ... */ * therefore don't validate but trust it! */
x[0] = *mode_ptr; x[0] = *mode_ptr;
} }
else else
{ {
/* Modes validieren */ /* Validate modes */
if( cl ) switch( *mode_ptr )
{ {
/* User-Modes */ case 'i':
switch( *mode_ptr ) /* Invisible */
{ x[0] = 'i';
case 'i':
/* invisible */
x[0] = 'i';
break;
case 'o':
/* operator (kann nur geloescht werden) */
if( ! set )
{
Client_SetOperByMe( Client, FALSE );
x[0] = 'o';
}
else ok = IRC_WriteStrClient( Client, ERR_NOPRIVILEGES_MSG, Client_ID( Client ));
break;
case 'r':
/* restricted (kann nur gesetzt werden) */
if( set ) x[0] = 'r';
else ok = IRC_WriteStrClient( Client, ERR_RESTRICTED_MSG, Client_ID( Client ));
break;
case 's':
/* server messages */
x[0] = 's';
break;
default:
Log( LOG_DEBUG, "Unknown mode \"%c%c\" from \"%s\"!?", set ? '+' : '-', *mode_ptr, Client_ID( Client ));
ok = IRC_WriteStrClient( Client, ERR_UMODEUNKNOWNFLAG2_MSG, Client_ID( Client ), set ? '+' : '-', *mode_ptr );
x[0] = '\0';
}
}
if( chan )
{
/* Ist der User ein Channel Operator? */
modeok = FALSE;
if( strchr( Channel_UserModes( chan, Client ), 'o' )) modeok = TRUE;
if( Conf_OperCanMode )
{
/* auch IRC-Operatoren duerfen MODE verwenden */
if( Client_OperByMe( Client )) modeok = TRUE;
}
if( ! modeok )
{
Log( LOG_DEBUG, "Can't change modes: \"%s\" is not operator on %s!", Client_ID( Client ), Channel_Name( chan ));
ok = IRC_WriteStrClient( Client, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Client ), Channel_Name( chan ));
break; break;
} case 'o':
/* IRC operator (only unsetable!) */
/* Channel-Modes oder Channel-User-Modes */ if( ! set )
if( chan_cl )
{
/* Channel-User-Modes */
switch( *mode_ptr )
{ {
case 'o': Client_SetOperByMe( Target, FALSE );
/* Channel Operator */ x[0] = 'o';
x[0] = 'o';
break;
case 'v':
/* Voice */
x[0] = 'v';
break;
default:
Log( LOG_DEBUG, "Unknown channel-user-mode \"%c%c\" from \"%s\" on \"%s\" at %s!?", set ? '+' : '-', *mode_ptr, Client_ID( Client ), Client_ID( chan_cl ), Channel_Name( chan ));
ok = IRC_WriteStrClient( Client, ERR_UMODEUNKNOWNFLAG2_MSG, Client_ID( Client ), set ? '+' : '-', *mode_ptr );
x[0] = '\0';
} }
} else ok = IRC_WriteStrClient( Origin, ERR_NOPRIVILEGES_MSG, Client_ID( Origin ));
else break;
{ case 'r':
/* Channel-Modes */ /* Restricted (only setable) */
switch( *mode_ptr ) if( set ) x[0] = 'r';
{ else ok = IRC_WriteStrClient( Origin, ERR_RESTRICTED_MSG, Client_ID( Origin ));
case 'i': break;
/* Invite-Only */ case 's':
x[0] = 'i'; /* Server messages */
break; x[0] = 's';
case 'm': break;
/* Moderated */ default:
x[0] = 'm'; Log( LOG_DEBUG, "Unknown mode \"%c%c\" from \"%s\"!?", set ? '+' : '-', *mode_ptr, Client_ID( Origin ));
break; ok = IRC_WriteStrClient( Origin, ERR_UMODEUNKNOWNFLAG2_MSG, Client_ID( Origin ), set ? '+' : '-', *mode_ptr );
case 'n': x[0] = '\0';
/* kein Schreiben in den Channel von aussen */
x[0] = 'n';
break;
case 't':
/* Topic Lock */
x[0] = 't';
break;
case 'P':
/* Persistent channel */
if( set && ( ! Client_OperByMe( Client )))
{
/* there are too many persistent channels in the network! */
ok = IRC_WriteStrClient( Client, ERR_NOPRIVILEGES_MSG, Client_ID( Client ));
}
else x[0] = 'P';
break;
default:
Log( LOG_DEBUG, "Unknown channel-mode \"%c%c\" from \"%s\" at %s!?", set ? '+' : '-', *mode_ptr, Client_ID( Client ), Channel_Name( chan ));
ok = IRC_WriteStrClient( Client, ERR_UMODEUNKNOWNFLAG2_MSG, Client_ID( Client ), set ? '+' : '-', *mode_ptr );
x[0] = '\0';
}
}
} }
} }
if( ! ok ) break; if( ! ok ) break;
mode_ptr++; /* Is there a valid mode change? */
if( ! x[0] ) continue; if( ! x[0] ) continue;
/* Okay, gueltigen Mode gefunden */ if( set )
if( cl )
{ {
/* Es geht um User-Modes */ /* Set mode */
if( set ) if( Client_ModeAdd( Target, x[0] )) strcat( the_modes, x );
{
/* Mode setzen. Wenn der Client ihn noch nicht hatte: merken */
if( Client_ModeAdd( cl, x[0] )) strcat( the_modes, x );
}
else
{
/* Modes geloescht. Wenn der Client ihn hatte: merken */
if( Client_ModeDel( cl, x[0] )) strcat( the_modes, x );
}
/* "nachbearbeiten" */
if( x[0] == 'a' )
{
/* away */
if( set ) Client_SetAway( cl, DEFAULT_AWAY_MSG );
else Client_SetAway( cl, NULL );
}
} }
if( chan ) else
{ {
/* Es geht um Channel-Modes oder Channel-User-Modes */ /* Unset mode */
if( chan_cl ) if( Client_ModeDel( Target, x[0] )) strcat( the_modes, x );
{
/* Channel-User-Modes */
if( set )
{
/* Mode setzen. Wenn der Channel ihn noch nicht hatte: merken */
if( Channel_UserModeAdd( chan, chan_cl, x[0] )) strcat( the_modes, x );
}
else
{
/* Mode setzen. Wenn der Channel ihn noch nicht hatte: merken */
if( Channel_UserModeDel( chan, chan_cl, x[0] )) strcat( the_modes, x );
}
}
else
{
/* Channel-Mode */
if( set )
{
/* Mode setzen. Wenn der Channel ihn noch nicht hatte: merken */
if( Channel_ModeAdd( chan, x[0] )) strcat( the_modes, x );
}
else
{
/* Mode setzen. Wenn der Channel ihn noch nicht hatte: merken */
if( Channel_ModeDel( chan, x[0] )) strcat( the_modes, x );
}
}
} }
} }
/* Wurden Modes geaendert? */ /* Are there changed modes? */
if( the_modes[1] ) if( the_modes[1] )
{ {
if( cl ) /* Remoce needless action modifier characters */
if(( the_modes[strlen( the_modes ) - 1] == '+' ) || ( the_modes[strlen( the_modes ) - 1] == '-' )) the_modes[strlen( the_modes ) - 1] = '\0';
if( Client_Type( Client ) == CLIENT_SERVER )
{ {
/* Client-Mode */ /* Forward modes to other servers */
if( Client_Type( Client ) == CLIENT_SERVER ) IRC_WriteStrServersPrefix( Client, Origin, "MODE %s :%s", Client_ID( Target ), the_modes );
{
/* Modes an andere Server forwarden */
IRC_WriteStrServersPrefix( Client, prefix, "MODE %s :%s", Client_ID( cl ), the_modes );
}
else
{
/* Bestaetigung an Client schicken & andere Server informieren */
ok = IRC_WriteStrClientPrefix( Client, prefix, "MODE %s %s", Client_ID( cl ), the_modes );
IRC_WriteStrServersPrefix( Client, prefix, "MODE %s :%s", Client_ID( cl ), the_modes );
}
Log( LOG_DEBUG, "User \"%s\": Mode change, now \"%s\".", Client_Mask( cl ), Client_Modes( cl ));
} }
if( chan ) else
{ {
/* Channel-Modes oder Channel-User-Mode */ /* Send reply to client and inform other servers */
if( chan_cl ) ok = IRC_WriteStrClientPrefix( Client, Origin, "MODE %s %s", Client_ID( Target ), the_modes );
{ IRC_WriteStrServersPrefix( Client, Origin, "MODE %s :%s", Client_ID( Target ), the_modes );
/* Channel-User-Mode */
if( Client_Type( Client ) == CLIENT_SERVER )
{
/* Modes an andere Server und Channel-User forwarden */
IRC_WriteStrServersPrefix( Client, prefix, "MODE %s %s :%s", Channel_Name( chan ), the_modes, Client_ID( chan_cl));
IRC_WriteStrChannelPrefix( Client, chan, prefix, FALSE, "MODE %s %s %s", Channel_Name( chan ), the_modes, Client_ID( chan_cl));
}
else
{
/* Bestaetigung an Client schicken & andere Server sowie Channel-User informieren */
ok = IRC_WriteStrClientPrefix( Client, prefix, "MODE %s %s %s", Channel_Name( chan ), the_modes, Client_ID( chan_cl));
IRC_WriteStrServersPrefix( Client, prefix, "MODE %s %s :%s", Channel_Name( chan ), the_modes, Client_ID( chan_cl));
IRC_WriteStrChannelPrefix( Client, chan, prefix, FALSE, "MODE %s %s %s", Channel_Name( chan ), the_modes, Client_ID( chan_cl));
}
Log( LOG_DEBUG, "User \"%s\" on %s: Mode change, now \"%s\".", Client_Mask( chan_cl), Channel_Name( chan ), Channel_UserModes( chan, chan_cl ));
}
else
{
/* Channel-Mode */
if( Client_Type( Client ) == CLIENT_SERVER )
{
/* Modes an andere Server und Channel-User forwarden */
IRC_WriteStrServersPrefix( Client, prefix, "MODE %s :%s", Channel_Name( chan ), the_modes );
IRC_WriteStrChannelPrefix( Client, chan, prefix, FALSE, "MODE %s %s", Channel_Name( chan ), the_modes );
}
else
{
/* Bestaetigung an Client schicken & andere Server sowie Channel-User informieren */
ok = IRC_WriteStrClientPrefix( Client, prefix, "MODE %s %s", Channel_Name( chan ), the_modes );
IRC_WriteStrServersPrefix( Client, prefix, "MODE %s :%s", Channel_Name( chan ), the_modes );
IRC_WriteStrChannelPrefix( Client, chan, prefix, FALSE, "MODE %s %s", Channel_Name( chan ), the_modes );
}
Log( LOG_DEBUG, "Channel \"%s\": Mode change, now \"%s\".", Channel_Name( chan ), Channel_Modes( chan ));
}
} }
Log( LOG_DEBUG, "User \"%s\": Mode change, now \"%s\".", Client_Mask( Target ), Client_Modes( Target ));
} }
return ok; return ok;
} /* IRC_MODE */ } /* Client_Mode */
LOCAL BOOLEAN
Channel_Mode( CLIENT *Client, REQUEST *Req, CLIENT *Origin, CHANNEL *Channel )
{
/* Handle channel and channel-user modes */
CHAR the_modes[COMMAND_LEN], the_args[COMMAND_LEN], x[2], *mode_ptr;
BOOLEAN ok, set, modeok, skiponce;
INT mode_arg, arg_arg;
CLIENT *client;
/* Mode request: let's answer it :-) */
if( Req->argc == 1 ) return IRC_WriteStrClient( Origin, RPL_CHANNELMODEIS_MSG, Client_ID( Origin ), Channel_Name( Channel ), Channel_Modes( Channel ));
/* Is the user allowed to change modes? */
if( Client_Type( Client ) == CLIENT_USER )
{
if( strchr( Channel_UserModes( Channel, Origin ), 'o' )) modeok = TRUE;
else modeok = FALSE;
if( Conf_OperCanMode )
{
/* auch IRC-Operatoren duerfen MODE verwenden */
if( Client_OperByMe( Origin )) modeok = TRUE;
}
}
else modeok = TRUE;
mode_arg = 1;
mode_ptr = Req->argv[mode_arg];
if( Req->argc > mode_arg + 1 ) arg_arg = mode_arg + 1;
else arg_arg = -1;
/* Initial state: set or unset modes? */
skiponce = FALSE;
if( *mode_ptr == '-' ) set = FALSE;
else if( *mode_ptr == '+' ) set = TRUE;
else set = skiponce = TRUE;
/* Prepare reply string */
if( set ) strcpy( the_modes, "+" );
else strcpy( the_modes, "-" );
strcpy( the_args, " " );
x[1] = '\0';
ok = CONNECTED;
while( mode_ptr )
{
if( ! skiponce ) mode_ptr++;
if( ! *mode_ptr )
{
/* Try next argument if there's any */
if( arg_arg > mode_arg ) mode_arg = arg_arg;
else mode_arg++;
if( mode_arg < Req->argc ) mode_ptr = Req->argv[mode_arg];
else break;
if( Req->argc > mode_arg + 1 ) arg_arg = mode_arg + 1;
else arg_arg = -1;
}
skiponce = FALSE;
switch( *mode_ptr )
{
case '+':
case '-':
if((( *mode_ptr == '+' ) && ( ! set )) || (( *mode_ptr == '-' ) && ( set )))
{
/* Action modifier ("+"/"-") must be changed ... */
if(( the_modes[strlen( the_modes ) - 1] == '+' ) || ( the_modes[strlen( the_modes ) - 1] == '-' ))
{
/* Adjust last action modifier in result */
the_modes[strlen( the_modes ) - 1] = *mode_ptr;
}
else
{
/* Append modifier character to result string */
x[0] = *mode_ptr; strcat( the_modes, x );
}
if( *mode_ptr == '+' ) set = TRUE;
else set = FALSE;
}
continue;
}
/* Are there arguments left? */
if( arg_arg >= Req->argc ) arg_arg = -1;
x[0] = '\0';
client = NULL;
if( Client_Type( Client ) == CLIENT_SERVER )
{
/* MODE request was received from a server:
* therefore don't validate but trust it! */
x[0] = *mode_ptr;
}
else
{
/* Validate modes */
switch( *mode_ptr )
{
/* Channel modes */
case 'i':
/* Invite-Only */
if( modeok ) x[0] = 'i';
else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
break;
case 'm':
/* Moderated */
if( modeok ) x[0] = 'm';
else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
break;
case 'n':
/* kein Schreiben in den Channel von aussen */
if( modeok ) x[0] = 'n';
else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
break;
case 't':
/* Topic Lock */
if( modeok ) x[0] = 't';
else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
break;
case 'P':
/* Persistent channel */
if( modeok )
{
if( set && ( ! Client_OperByMe( Client )))
{
/* Only IRC operators are allowed to set P mode */
ok = IRC_WriteStrClient( Origin, ERR_NOPRIVILEGES_MSG, Client_ID( Origin ));
}
else x[0] = 'P';
}
else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
break;
/* Channel user modes */
case 'o':
/* Channel operator */
case 'v':
/* Voice */
if( arg_arg > mode_arg )
{
if( modeok )
{
client = Client_Search( Req->argv[arg_arg] );
if( client ) x[0] = *mode_ptr;
else ok = IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->argv[arg_arg] );
}
else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
arg_arg++;
}
else ok = IRC_WriteStrClient( Origin, ERR_NEEDMOREPARAMS_MSG, Client_ID( Origin ), Req->command );
break;
/* Channel lists */
case 'I':
/* Invite lists */
if( arg_arg > mode_arg )
{
/* modify list */
if( modeok )
{
if( set ) Add_Invite( Origin, Client, Channel, Req->argv[arg_arg] );
else Del_Invite( Origin, Client, Channel, Req->argv[arg_arg] );
}
else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
arg_arg++;
}
else Lists_ShowInvites( Origin, Channel );
break;
case 'b':
/* Ban lists */
if( arg_arg > mode_arg )
{
/* modify list */
if( modeok )
{
if( set ) Add_Ban( Origin, Client, Channel, Req->argv[arg_arg] );
else Del_Ban( Origin, Client, Channel, Req->argv[arg_arg] );
}
else ok = IRC_WriteStrClient( Origin, ERR_CHANOPRIVSNEEDED_MSG, Client_ID( Origin ), Channel_Name( Channel ));
arg_arg++;
}
else Lists_ShowBans( Origin, Channel );
break;
default:
Log( LOG_DEBUG, "Unknown mode \"%c%c\" from \"%s\" on %s!?", set ? '+' : '-', *mode_ptr, Client_ID( Origin ), Channel_Name( Channel ));
ok = IRC_WriteStrClient( Origin, ERR_UMODEUNKNOWNFLAG2_MSG, Client_ID( Origin ), set ? '+' : '-', *mode_ptr );
x[0] = '\0';
}
}
if( ! ok ) break;
/* Is there a valid mode change? */
if( ! x[0] ) continue;
if( set )
{
/* Set mode */
if( client )
{
/* Channel-User-Mode */
if( Channel_UserModeAdd( Channel, client, x[0] ))
{
strcat( the_modes, x );
strcat( the_args, Client_ID( client ));
strcat( the_args, " " );
}
}
else
{
/* Channel-Mode */
if( Channel_ModeAdd( Channel, x[0] )) strcat( the_modes, x );
}
}
else
{
/* Unset mode */
if( client )
{
/* Channel-User-Mode */
if( Channel_UserModeDel( Channel, client, x[0] ))
{
strcat( the_modes, x );
strcat( the_args, Client_ID( client ));
strcat( the_args, " " );
}
}
else
{
/* Channel-Mode */
if( Channel_ModeDel( Channel, x[0] )) strcat( the_modes, x );
}
}
}
/* Are there changed modes? */
if( the_modes[1] )
{
/* Clean up argument string if there are none */
if( ! the_args[1] ) the_args[0] = '\0';
if( Client_Type( Client ) == CLIENT_SERVER )
{
/* Forward mode changes to channel users and other servers */
IRC_WriteStrServersPrefix( Client, Origin, "MODE %s %s%s", Channel_Name( Channel ), the_modes, the_args );
IRC_WriteStrChannelPrefix( Client, Channel, Origin, FALSE, "MODE %s %s%s", Channel_Name( Channel ), the_modes, the_args );
}
else
{
/* Send reply to client and inform other servers and channel users */
ok = IRC_WriteStrClientPrefix( Client, Origin, "MODE %s %s%s", Channel_Name( Channel ), the_modes, the_args );
IRC_WriteStrServersPrefix( Client, Origin, "MODE %s %s%s", Channel_Name( Channel ), the_modes, the_args );
IRC_WriteStrChannelPrefix( Client, Channel, Origin, FALSE, "MODE %s %s%s", Channel_Name( Channel ), the_modes, the_args );
}
Log( LOG_DEBUG, "User \"%s\" changes modes on %s: %s%s", Client_ID( Origin ), Channel_Name( Channel ), the_modes, the_args );
}
return CONNECTED;
} /* Channel_Mode */
GLOBAL BOOLEAN GLOBAL BOOLEAN