* Naehere Informationen entnehmen Sie bitter der Datei COPYING. Eine Liste
* der an comBase beteiligten Autoren finden Sie in der Datei AUTHORS.
*
- * $Id: irc.c,v 1.5 2001/12/25 22:02:42 alex Exp $
+ * $Id: irc.c,v 1.14 2001/12/30 11:42:00 alex Exp $
*
* irc.c: IRC-Befehle
*
* $Log: irc.c,v $
+ * Revision 1.14 2001/12/30 11:42:00 alex
+ * - der Server meldet nun eine ordentliche "Start-Zeit".
+ *
+ * Revision 1.13 2001/12/29 03:10:06 alex
+ * - Neue Funktion IRC_MODE() implementiert, div. Aenderungen.
+ * - neue configure-Optione "--enable-strict-rfc".
+ *
+ * Revision 1.12 2001/12/27 19:17:26 alex
+ * - neue Befehle PRIVMSG, NOTICE, PING.
+ *
+ * Revision 1.11 2001/12/27 16:55:41 alex
+ * - neu: IRC_WriteStrRelated(), Aenderungen auch in IRC_WriteStrClient().
+ *
+ * Revision 1.10 2001/12/26 22:48:53 alex
+ * - MOTD-Datei ist nun konfigurierbar und wird gelesen.
+ *
+ * Revision 1.9 2001/12/26 14:45:37 alex
+ * - "Code Cleanups".
+ *
+ * Revision 1.8 2001/12/26 03:21:46 alex
+ * - PING/PONG-Befehle implementiert,
+ * - Meldungen ueberarbeitet: enthalten nun (fast) immer den Nick.
+ *
+ * Revision 1.7 2001/12/25 23:25:18 alex
+ * - und nochmal Aenderungen am Logging ;-)
+ *
+ * Revision 1.6 2001/12/25 23:13:33 alex
+ * - Debug-Meldungen angepasst.
+ *
* Revision 1.5 2001/12/25 22:02:42 alex
* - neuer IRC-Befehl "/QUIT". Verbessertes Logging & Debug-Ausgaben.
*
#include <imp.h>
#include <assert.h>
+#include <errno.h>
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
+#include "ngircd.h"
#include "client.h"
+#include "conf.h"
#include "log.h"
#include "messages.h"
#include "parse.h"
} /* IRC_Exit */
-GLOBAL BOOLEAN IRC_WriteStr_Client( CLIENT *Client, CLIENT *Prefix, CHAR *Format, ... )
+GLOBAL BOOLEAN IRC_WriteStrClient( CLIENT *Client, CLIENT *Prefix, CHAR *Format, ... )
{
/* Text an Clients, lokal bzw. remote, senden. */
CHAR buffer[1000];
BOOLEAN ok = CONNECTED;
+ CONN_ID send_to;
va_list ap;
assert( Client != NULL );
assert( Format != NULL );
va_start( ap, Format );
+ vsnprintf( buffer, 1000, Format, ap );
+ va_end( ap );
+
+ if( Client->conn_id != NONE ) send_to = Client->conn_id;
+ else send_to = Client->introducer->conn_id;
+
+ if( Prefix ) ok = Conn_WriteStr( Client->conn_id, ":%s %s", Client_GetID( Prefix ), buffer );
+ else ok = Conn_WriteStr( Client->conn_id, buffer );
+
+ return ok;
+} /* IRC_WriteStrClient */
- if( Client->conn_id != NONE )
- {
- /* Lokaler Client */
- vsnprintf( buffer, 1000, Format, ap );
- if( Prefix ) ok = Conn_WriteStr( Client->conn_id, ":%s %s", Prefix->host, buffer );
- else ok = Conn_WriteStr( Client->conn_id, buffer );
- }
- else
- {
- /* Remote-Client */
- Log( LOG_EMERG, "not implemented: IRC_WriteStr_Client()" );
- }
+GLOBAL BOOLEAN IRC_WriteStrRelated( CLIENT *Client, CHAR *Format, ... )
+{
+ CHAR buffer[1000];
+ BOOLEAN ok = CONNECTED;
+ va_list ap;
+
+ assert( Client != NULL );
+ assert( Format != NULL );
+
+ va_start( ap, Format );
+ vsnprintf( buffer, 1000, Format, ap );
va_end( ap );
+
+ /* an den Client selber */
+ ok = IRC_WriteStrClient( Client, Client, buffer );
+
return ok;
-} /* IRC_WriteStr_Client */
+} /* IRC_WriteStrRelated */
GLOBAL BOOLEAN IRC_PASS( CLIENT *Client, REQUEST *Req )
if( Client->type == CLIENT_UNKNOWN )
{
- Log( LOG_DEBUG, "Registration of connection %d: got PASS command ...", Client->conn_id );
- return IRC_WriteStr_Client( Client, This_Server, ERR_UNKNOWNCOMMAND_MSG, Req->command );
+ Log( LOG_DEBUG, "Connection %d: got PASS command ...", Client->conn_id );
+ return IRC_WriteStrClient( Client, This_Server, ERR_UNKNOWNCOMMAND_MSG, Client_Name( Client ), Req->command );
}
- else return IRC_WriteStr_Client( Client, This_Server, ERR_ALREADYREGISTRED_MSG );
+ else return IRC_WriteStrClient( Client, This_Server, ERR_ALREADYREGISTRED_MSG, Client_Name( Client ));
} /* IRC_PASS */
GLOBAL BOOLEAN IRC_NICK( CLIENT *Client, REQUEST *Req )
{
- CLIENT *c;
-
assert( Client != NULL );
assert( Req != NULL );
- if( Client->type != CLIENT_SERVER && Client->type != CLIENT_SERVICE )
+ /* Zumindest BitchX sendet NICK-USER in der falschen Reihenfolge. */
+#ifndef STRICT_RFC
+ if( Client->type == CLIENT_UNKNOWN || Client->type == CLIENT_GOTPASS || Client->type == CLIENT_GOTNICK || Client->type == CLIENT_GOTUSER || Client->type == CLIENT_USER )
+#else
+ if( Client->type == CLIENT_UNKNOWN || Client->type == CLIENT_GOTPASS || Client->type == CLIENT_GOTNICK || Client->type == CLIENT_USER )
+#endif
{
/* Falsche Anzahl Parameter? */
- if( Req->argc != 1 ) return IRC_WriteStr_Client( Client, This_Server, ERR_NEEDMOREPARAMS_MSG );
+ if( Req->argc != 1 ) return IRC_WriteStrClient( Client, This_Server, ERR_NEEDMOREPARAMS_MSG, Client_Name( Client ), Req->command );
- /* Nick zu lang? */
- if( strlen( Req->argv[0] ) > CLIENT_NICK_LEN ) return IRC_WriteStr_Client( Client, This_Server, ERR_ERRONEUSNICKNAME_MSG, Req->argv[0] );
+ /* Ist der Client "restricted"? */
+ if( strchr( Client->modes, 'r' )) return IRC_WriteStrClient( Client, This_Server, ERR_RESTRICTED_MSG, Client_Name( Client ));
+ /* Wenn der Client zu seinem eigenen Nick wechseln will, so machen
+ * wir nichts. So macht es das Original und mind. Snak hat probleme,
+ * wenn wir es nicht so machen. Ob es so okay ist? Hm ... */
+#ifndef STRICT_RFC
+ if( strcasecmp( Client->nick, Req->argv[0] ) == 0 ) return CONNECTED;
+#endif
+
/* pruefen, ob Nick bereits vergeben */
- c = My_Clients;
- while( c )
+ if( ! Client_CheckNick( Client, Req->argv[0] )) return CONNECTED;
+
+ if( Client->type == CLIENT_USER )
{
- if( strcasecmp( c->nick, Req->argv[0] ) == 0 )
- {
- /* den Nick gibt es bereits */
- return IRC_WriteStr_Client( Client, This_Server, ERR_NICKNAMEINUSE_MSG, Req->argv[0] );
- }
- c = c->next;
+ /* Nick-Aenderung: allen mitteilen! */
+ Log( LOG_INFO, "User \"%s!%s@%s\" changed nick: \"%s\" -> \"%s\".", Client->nick, Client->user, Client->host, Client->nick, Req->argv[0] );
+ IRC_WriteStrRelated( Client, "NICK :%s", Req->argv[0] );
}
/* Client-Nick registrieren */
if( Client->type != CLIENT_USER )
{
/* Neuer Client */
- Log( LOG_DEBUG, "Registration of connection %d: got NICK command ...", Client->conn_id );
+ Log( LOG_DEBUG, "Connection %d: got NICK command ...", Client->conn_id );
if( Client->type == CLIENT_GOTUSER ) return Hello_User( Client );
else Client->type = CLIENT_GOTNICK;
}
return CONNECTED;
}
- else return IRC_WriteStr_Client( Client, This_Server, ERR_ALREADYREGISTRED_MSG );
+ else return IRC_WriteStrClient( Client, This_Server, ERR_ALREADYREGISTRED_MSG, Client_Name( Client ));
} /* IRC_NICK */
assert( Client != NULL );
assert( Req != NULL );
- if( Client->type == CLIENT_UNKNOWN || Client->type == CLIENT_GOTNICK || Client->type == CLIENT_GOTPASS )
+#ifndef STRICT_RFC
+ if( Client->type == CLIENT_GOTNICK || Client->type == CLIENT_GOTPASS || Client->type == CLIENT_UNKNOWN )
+#else
+ if( Client->type == CLIENT_GOTNICK || Client->type == CLIENT_GOTPASS )
+#endif
{
/* Falsche Anzahl Parameter? */
- if( Req->argc != 4 ) return IRC_WriteStr_Client( Client, This_Server, ERR_NEEDMOREPARAMS_MSG );
-
+ if( Req->argc != 4 ) return IRC_WriteStrClient( Client, This_Server, ERR_NEEDMOREPARAMS_MSG, Client_Name( Client ), Req->command );
+
strncpy( Client->user, Req->argv[0], CLIENT_USER_LEN );
Client->user[CLIENT_USER_LEN] = '\0';
strncpy( Client->name, Req->argv[3], CLIENT_NAME_LEN );
Client->name[CLIENT_NAME_LEN] = '\0';
-
- Log( LOG_DEBUG, "Registration of connection %d: got USER command ...", Client->conn_id );
+
+ Log( LOG_DEBUG, "Connection %d: got USER command ...", Client->conn_id );
if( Client->type == CLIENT_GOTNICK ) return Hello_User( Client );
else Client->type = CLIENT_GOTUSER;
return CONNECTED;
}
else if( Client->type == CLIENT_USER || Client->type == CLIENT_SERVER || Client->type == CLIENT_SERVICE )
{
- return IRC_WriteStr_Client( Client, This_Server, ERR_ALREADYREGISTRED_MSG );
+ return IRC_WriteStrClient( Client, This_Server, ERR_ALREADYREGISTRED_MSG, Client_Name( Client ));
}
- else return IRC_WriteStr_Client( Client, This_Server, ERR_NOTREGISTERED_MSG );
+ else return IRC_WriteStrClient( Client, This_Server, ERR_NOTREGISTERED_MSG, Client_Name( Client ));
} /* IRC_USER */
if( Client->type != CLIENT_SERVER && Client->type != CLIENT_SERVICE )
{
/* Falsche Anzahl Parameter? */
- if( Req->argc > 1 ) return IRC_WriteStr_Client( Client, This_Server, ERR_NEEDMOREPARAMS_MSG );
+ if( Req->argc > 1 ) return IRC_WriteStrClient( Client, This_Server, ERR_NEEDMOREPARAMS_MSG, Client_Name( Client ), Req->command );
Conn_Close( Client->conn_id, "Client wants to quit." );
return DISCONNECTED;
}
- else return IRC_WriteStr_Client( Client, This_Server, ERR_NOTREGISTERED_MSG );
+ else return IRC_WriteStrClient( Client, This_Server, ERR_NOTREGISTERED_MSG, Client_Name( Client ));
} /* IRC_QUIT */
-GLOBAL BOOLEAN IRC_MOTD( CLIENT *Client, REQUEST *Req )
+GLOBAL BOOLEAN IRC_PING( CLIENT *Client, REQUEST *Req )
{
+ CLIENT *to;
+
assert( Client != NULL );
assert( Req != NULL );
if( ! Check_Valid_User( Client )) return CONNECTED;
/* Falsche Anzahl Parameter? */
- if( Req->argc != 0 ) return IRC_WriteStr_Client( Client, This_Server, ERR_NEEDMOREPARAMS_MSG );
+ if( Req->argc < 1 ) return IRC_WriteStrClient( Client, This_Server, ERR_NOORIGIN_MSG, Client_Name( Client ));
+ if( Req->argc > 1 ) return IRC_WriteStrClient( Client, This_Server, ERR_NEEDMOREPARAMS_MSG, Client_Name( Client ), Req->command );
+
+ to = Client_Search( Req->argv[0] );
- return Show_MOTD( Client );
+ if( to ) return IRC_WriteStrClient( Client, This_Server, "PONG :%s", Client_Name( Client ));
+ else return IRC_WriteStrClient( Client, This_Server, ERR_NOSUCHNICK_MSG, Client_Name( Client ), Req->argv[0] );
+} /* IRC_PING */
+
+
+GLOBAL BOOLEAN IRC_PONG( CLIENT *Client, REQUEST *Req )
+{
+ assert( Client != NULL );
+ assert( Req != NULL );
+
+ if( ! Check_Valid_User( Client )) return CONNECTED;
+
+ /* Falsche Anzahl Parameter? */
+ if( Req->argc < 1 ) return IRC_WriteStrClient( Client, This_Server, ERR_NOORIGIN_MSG, Client_Name( Client ));
+ if( Req->argc > 1 ) return IRC_WriteStrClient( Client, This_Server, ERR_NEEDMOREPARAMS_MSG, Client_Name( Client ), Req->command );
+
+ /* Der Connection-Timestamp wurde schon beim Lesen aus dem Socket
+ * aktualisiert, daher muss das hier nicht mehr gemacht werden. */
+
+ Log( LOG_DEBUG, "Connection %d: received PONG.", Client->conn_id );
+ return CONNECTED;
+} /* IRC_PONG */
+
+
+GLOBAL BOOLEAN IRC_MOTD( CLIENT *Client, REQUEST *Req )
+{
+ assert( Client != NULL );
+ assert( Req != NULL );
+
+ if( ! Check_Valid_User( Client )) return CONNECTED;
+
+ /* Falsche Anzahl Parameter? */
+ if( Req->argc != 0 ) return IRC_WriteStrClient( Client, This_Server, ERR_NEEDMOREPARAMS_MSG, Client_Name( Client ), Req->command );
+
+ return Show_MOTD( Client );
} /* IRC_MOTD */
+GLOBAL BOOLEAN IRC_PRIVMSG( CLIENT *Client, REQUEST *Req )
+{
+ CLIENT *to;
+
+ assert( Client != NULL );
+ assert( Req != NULL );
+
+ if( ! Check_Valid_User( Client )) return CONNECTED;
+
+ /* Falsche Anzahl Parameter? */
+ if( Req->argc == 0 ) return IRC_WriteStrClient( Client, This_Server, ERR_NORECIPIENT_MSG, Client_Name( Client ), Req->command );
+ if( Req->argc == 1 ) return IRC_WriteStrClient( Client, This_Server, ERR_NOTEXTTOSEND_MSG, Client_Name( Client ));
+ if( Req->argc > 2 ) return IRC_WriteStrClient( Client, This_Server, ERR_NEEDMOREPARAMS_MSG, Client_Name( Client ), Req->command );
+
+ to = Client_Search( Req->argv[0] );
+ if( to )
+ {
+ /* Okay, Ziel ist ein User */
+ return IRC_WriteStrClient( to, Client, "PRIVMSG %s :%s", to->nick, Req->argv[1] );
+ }
+
+ return IRC_WriteStrClient( Client, This_Server, ERR_NOSUCHNICK_MSG, Client_Name( Client ), Req->argv[0] );
+} /* IRC_PRIVMSG */
+
+
+GLOBAL BOOLEAN IRC_NOTICE( CLIENT *Client, REQUEST *Req )
+{
+ CLIENT *to;
+
+ assert( Client != NULL );
+ assert( Req != NULL );
+
+ if( ! Check_Valid_User( Client )) return CONNECTED;
+
+ /* Falsche Anzahl Parameter? */
+ if( Req->argc != 2 ) return CONNECTED;
+
+ to = Client_Search( Req->argv[0] );
+ if( to )
+ {
+ /* Okay, Ziel ist ein User */
+ return IRC_WriteStrClient( to, Client, "NOTICE %s :%s", to->nick, Req->argv[1] );
+ }
+
+ return CONNECTED;
+} /* IRC_NOTICE */
+
+
+GLOBAL BOOLEAN IRC_MODE( CLIENT *Client, REQUEST *Req )
+{
+ CHAR x[2], new_modes[CLIENT_MODE_LEN], *ptr, *p;
+ BOOLEAN set, ok;
+
+ assert( Client != NULL );
+ assert( Req != NULL );
+
+ if( ! Check_Valid_User( Client )) return CONNECTED;
+
+ /* Falsche Anzahl Parameter? */
+ if(( Req->argc > 2 ) || ( Req->argc < 1 )) return IRC_WriteStrClient( Client, This_Server, ERR_NEEDMOREPARAMS_MSG, Client_Name( Client ), Req->command );
+
+ /* MODE ist nur fuer sich selber zulaessig */
+ if( Client_Search( Req->argv[0] ) != Client ) return IRC_WriteStrClient( Client, This_Server, ERR_USERSDONTMATCH_MSG, Client_Name( Client ));
+
+ /* Werden die Modes erfragt? */
+ if( Req->argc == 1 ) return IRC_WriteStrClient( Client, This_Server, RPL_UMODEIS_MSG, Client_Name( Client ), Client->modes );
+
+ ptr = Req->argv[1];
+
+ /* Sollen Modes gesetzt oder geloescht werden? */
+ if( *ptr == '+' ) set = TRUE;
+ else if( *ptr == '-' ) set = FALSE;
+ else return IRC_WriteStrClient( Client, This_Server, ERR_UMODEUNKNOWNFLAG_MSG, Client_Name( Client ));
+
+ /* Reply-String mit Aenderungen vorbereiten */
+ if( set ) strcpy( new_modes, "+" );
+ else strcpy( new_modes, "-" );
+
+ ptr++;
+ ok = TRUE;
+ x[1] = '\0';
+ while( *ptr )
+ {
+ x[0] = '\0';
+ switch( *ptr )
+ {
+ case 'i':
+ /* invisible */
+ x[0] = 'i';
+ break;
+ case 'r':
+ /* restricted (kann nur gesetzt werden) */
+ if( set ) x[0] = 'r';
+ else ok = IRC_WriteStrClient( Client, This_Server, ERR_RESTRICTED_MSG, Client_Name( Client ));
+ break;
+ default:
+ ok = IRC_WriteStrClient( Client, This_Server, ERR_UMODEUNKNOWNFLAG_MSG, Client_Name( Client ));
+ x[0] = '\0';
+ }
+ if( ! ok ) break;
+
+ ptr++;
+ if( ! x[0] ) continue;
+
+ /* Okay, gueltigen Mode gefunden */
+ if( set )
+ {
+ /* Modes sollen gesetzt werden */
+ if( ! strchr( Client->modes, x[0] ))
+ {
+ /* Client hat den Mode noch nicht -> setzen */
+ strcat( Client->modes, x );
+ strcat( new_modes, x );
+ }
+ }
+ else
+ {
+ /* Modes sollen geloescht werden */
+ p = strchr( Client->modes, x[0] );
+ if( p )
+ {
+ /* Client hat den Mode -> loeschen */
+ while( *p )
+ {
+ *p = *(p + 1);
+ p++;
+ }
+ strcat( new_modes, x );
+ }
+ }
+ }
+
+ /* Geanderte Modes? */
+ if( new_modes[1] && ok )
+ {
+ ok = IRC_WriteStrRelated( Client, "MODE %s :%s", Client->nick, new_modes );
+ Log( LOG_DEBUG, "User \"%s!%s@%s\": Mode change, now \"%s\".", Client->nick, Client->user, Client->host, Client->modes );
+ }
+ return ok;
+} /* IRC_MODE */
+
+
LOCAL BOOLEAN Check_Valid_User( CLIENT *Client )
{
assert( Client != NULL );
if( Client->type != CLIENT_USER )
{
- IRC_WriteStr_Client( Client, This_Server, ERR_NOTREGISTERED_MSG );
+ IRC_WriteStrClient( Client, This_Server, ERR_NOTREGISTERED_MSG, Client_Name( Client ));
return FALSE;
}
else return TRUE;
LOCAL BOOLEAN Hello_User( CLIENT *Client )
{
- Log( LOG_INFO, "User \"%s!%s@%s\" (%s) registered.", Client->nick, Client->user, Client->host, Client->name );
+ assert( Client != NULL );
+ assert( Client->nick[0] );
+
+ Log( LOG_NOTICE, "User \"%s!%s@%s\" (%s) registered (connection %d).", Client->nick, Client->user, Client->host, Client->name, Client->conn_id );
- IRC_WriteStr_Client( Client, This_Server, RPL_WELCOME_MSG, Client->nick, Client->nick, Client->user, Client->host );
- IRC_WriteStr_Client( Client, This_Server, RPL_YOURHOST_MSG, Client->nick, This_Server->host );
- IRC_WriteStr_Client( Client, This_Server, RPL_CREATED_MSG, Client->nick );
- IRC_WriteStr_Client( Client, This_Server, RPL_MYINFO_MSG, Client->nick, This_Server->host );
+ IRC_WriteStrClient( Client, This_Server, RPL_WELCOME_MSG, Client->nick, Client_GetID( Client ));
+ IRC_WriteStrClient( Client, This_Server, RPL_YOURHOST_MSG, Client->nick, This_Server->host );
+ IRC_WriteStrClient( Client, This_Server, RPL_CREATED_MSG, Client->nick, NGIRCd_StartStr );
+ IRC_WriteStrClient( Client, This_Server, RPL_MYINFO_MSG, Client->nick, This_Server->host );
Client->type = CLIENT_USER;
LOCAL BOOLEAN Show_MOTD( CLIENT *Client )
{
- IRC_WriteStr_Client( Client, This_Server, RPL_MOTDSTART_MSG, Client->nick, This_Server->host );
- IRC_WriteStr_Client( Client, This_Server, RPL_MOTD_MSG, Client->nick, "Some cool IRC server welcome message ;-)" );
- return IRC_WriteStr_Client( Client, This_Server, RPL_ENDOFMOTD_MSG, Client->nick );
+ BOOLEAN ok;
+ CHAR line[127];
+ FILE *fd;
+
+ assert( Client != NULL );
+ assert( Client->nick[0] );
+
+ fd = fopen( Conf_MotdFile, "r" );
+ if( ! fd )
+ {
+ Log( LOG_WARNING, "Can't read MOTD file \"%s\": %s", Conf_MotdFile, strerror( errno ));
+ return IRC_WriteStrClient( Client, This_Server, ERR_NOMOTD_MSG, Client->nick );
+ }
+
+ IRC_WriteStrClient( Client, This_Server, RPL_MOTDSTART_MSG, Client->nick, This_Server->host );
+ while( TRUE )
+ {
+ if( ! fgets( line, 126, fd )) break;
+ if( line[strlen( line ) - 1] == '\n' ) line[strlen( line ) - 1] = '\0';
+ IRC_WriteStrClient( Client, This_Server, RPL_MOTD_MSG, Client->nick, line );
+ }
+ ok = IRC_WriteStrClient( Client, This_Server, RPL_ENDOFMOTD_MSG, Client->nick );
+
+ fclose( fd );
+
+ return ok;
} /* Show_MOTD */