/*
* ngIRCd -- The Next Generation IRC Daemon
- * Copyright (c)2001 by Alexander Barton (alex@barton.de)
+ * Copyright (c)2001,2002 by Alexander Barton (alex@barton.de)
*
* Dieses Programm ist freie Software. Sie koennen es unter den Bedingungen
* der GNU General Public License (GPL), wie von der Free Software Foundation
* herausgegeben, weitergeben und/oder modifizieren, entweder unter Version 2
* der Lizenz oder (wenn Sie es wuenschen) jeder spaeteren Version.
* Naehere Informationen entnehmen Sie bitter der Datei COPYING. Eine Liste
- * der an comBase beteiligten Autoren finden Sie in der Datei AUTHORS.
+ * der an ngIRCd beteiligten Autoren finden Sie in der Datei AUTHORS.
*
- * $Id: parse.c,v 1.5 2001/12/26 03:23:03 alex Exp $
+ * $Id: parse.c,v 1.45 2002/11/22 23:33:00 alex Exp $
*
* parse.c: Parsen der Client-Anfragen
- *
- * $Log: parse.c,v $
- * Revision 1.5 2001/12/26 03:23:03 alex
- * - PING/PONG-Befehle implementiert.
- *
- * Revision 1.4 2001/12/25 22:04:26 alex
- * - Aenderungen an den Debug- und Logging-Funktionen.
- *
- * Revision 1.3 2001/12/25 19:18:36 alex
- * - Gross- und Kleinschreibung der IRC-Befehle wird ignoriert.
- * - bessere Debug-Ausgaben.
- *
- * Revision 1.2 2001/12/23 21:56:47 alex
- * - bessere Debug-Ausgaben,
- * - Bug im Parameter-Parser behoben (bei "langem" Parameter)
- * - erste IRC-Befehle werden erkannt :-)
- *
- * Revision 1.1 2001/12/21 23:53:16 alex
- * - Modul zum Parsen von Client-Requests begonnen.
*/
-#include <portab.h>
-#include "global.h"
+#include "portab.h"
-#include <imp.h>
+#include "imp.h"
#include <assert.h>
+#include <stdlib.h>
#include <stdio.h>
#include <string.h>
-#include "client.h"
+#include "ngircd.h"
+#include "defines.h"
#include "conn.h"
-#include "irc.h"
+#include "client.h"
+#include "channel.h"
#include "log.h"
#include "messages.h"
+#include "tool.h"
-#include <exp.h>
+#include "exp.h"
#include "parse.h"
+#include "imp.h"
+#include "irc.h"
+#include "irc-channel.h"
+#include "irc-login.h"
+#include "irc-mode.h"
+#include "irc-op.h"
+#include "irc-oper.h"
+#include "irc-server.h"
+#include "irc-write.h"
-LOCAL VOID Init_Request( REQUEST *Req );
-
-LOCAL BOOLEAN Parse_Error( CONN_ID Idx, CHAR *Error );
-
-LOCAL BOOLEAN Validate_Prefix( REQUEST *Req );
-LOCAL BOOLEAN Validate_Command( REQUEST *Req );
-LOCAL BOOLEAN Validate_Args( REQUEST *Req );
-
-LOCAL BOOLEAN Handle_Request( CONN_ID Idx, REQUEST *Req );
+#include "exp.h"
-GLOBAL VOID Parse_Init( VOID )
-{
-} /* Parse_Init */
+LOCAL VOID Init_Request PARAMS(( REQUEST *Req ));
+LOCAL BOOLEAN Validate_Prefix PARAMS(( CONN_ID Idx, REQUEST *Req, BOOLEAN *Closed ));
+LOCAL BOOLEAN Validate_Command PARAMS(( CONN_ID Idx, REQUEST *Req, BOOLEAN *Closed ));
+LOCAL BOOLEAN Validate_Args PARAMS(( CONN_ID Idx, REQUEST *Req, BOOLEAN *Closed ));
-GLOBAL VOID Parse_Exit( VOID )
-{
-} /* Parse_Exit */
+LOCAL BOOLEAN Handle_Request PARAMS(( CONN_ID Idx, REQUEST *Req ));
-GLOBAL BOOLEAN Parse_Request( CONN_ID Idx, CHAR *Request )
+GLOBAL BOOLEAN
+Parse_Request( CONN_ID Idx, CHAR *Request )
{
/* Client-Request parsen. Bei einem schwerwiegenden Fehler wird
* die Verbindung geschlossen und FALSE geliefert.
REQUEST req;
CHAR *start, *ptr;
+ BOOLEAN closed;
assert( Idx >= 0 );
assert( Request != NULL );
#ifdef SNIFFER
- Log( LOG_DEBUG, " <- connection %d: '%s'.", Idx, Request );
+ if( NGIRCd_Sniffer ) Log( LOG_DEBUG, " <- connection %d: '%s'.", Idx, Request );
#endif
-
+
Init_Request( &req );
+ /* Fuehrendes und folgendes "Geraffel" verwerfen */
+ ngt_TrimStr( Request );
+
/* gibt es ein Prefix? */
if( Request[0] == ':' )
{
/* Prefix vorhanden */
req.prefix = Request + 1;
ptr = strchr( Request, ' ' );
- if( ! ptr ) return Parse_Error( Idx, "Invalid prefix (command missing!?)" );
+ if( ! ptr )
+ {
+ Log( LOG_DEBUG, "Connection %d: Parse error: prefix without command!?", Idx );
+ return Conn_WriteStr( Idx, "ERROR :Prefix without command!?" );
+ }
*ptr = '\0';
+#ifndef STRICT_RFC
+ /* multiple Leerzeichen als Trenner zwischen
+ * Prefix und Befehl ignorieren */
+ while( *(ptr + 1) == ' ' ) ptr++;
+#endif
start = ptr + 1;
}
else start = Request;
- if( ! Validate_Prefix( &req )) return Parse_Error( Idx, "Invalid prefix");
+ if( ! Validate_Prefix( Idx, &req, &closed )) return ! closed;
/* Befehl */
ptr = strchr( start, ' ' );
- if( ptr ) *ptr = '\0';
+ if( ptr )
+ {
+ *ptr = '\0';
+#ifndef STRICT_RFC
+ /* multiple Leerzeichen als Trenner vor
+ *Parametertrennern ignorieren */
+ while( *(ptr + 1) == ' ' ) ptr++;
+#endif
+ }
req.command = start;
- if( ! Validate_Command( &req )) return Parse_Error( Idx, "Invalid command" );
+ if( ! Validate_Command( Idx, &req, &closed )) return ! closed;
/* Argumente, Parameter */
if( ptr )
{
req.argv[req.argc] = start;
ptr = strchr( start, ' ' );
- if( ptr ) *ptr = '\0';
+ if( ptr )
+ {
+ *ptr = '\0';
+#ifndef STRICT_RFC
+ /* multiple Leerzeichen als
+ * Parametertrenner ignorieren */
+ while( *(ptr + 1) == ' ' ) ptr++;
+#endif
+ }
}
-
+
req.argc++;
if( start[0] == ':' ) break;
if( req.argc > 14 ) break;
-
+
if( ptr ) start = ptr + 1;
else start = NULL;
}
}
-
- if( ! Validate_Args( &req )) return Parse_Error( Idx, "Invalid argument(s)" );
-
+
+ if( ! Validate_Args( Idx, &req, &closed )) return ! closed;
+
return Handle_Request( Idx, &req );
} /* Parse_Request */
-LOCAL VOID Init_Request( REQUEST *Req )
+LOCAL VOID
+Init_Request( REQUEST *Req )
{
/* Neue Request-Struktur initialisieren */
INT i;
-
+
assert( Req != NULL );
Req->prefix = NULL;
} /* Init_Request */
-LOCAL BOOLEAN Parse_Error( CONN_ID Idx, CHAR *Error )
+LOCAL BOOLEAN
+Validate_Prefix( CONN_ID Idx, REQUEST *Req, BOOLEAN *Closed )
{
- /* Fehler beim Parsen. Fehlermeldung an den Client schicken.
- * TRUE: Connection wurde durch diese Funktion nicht geschlossen,
- * FALSE: Connection wurde terminiert. */
-
- CHAR msg[256];
-
+ CLIENT *client, *c;
+
assert( Idx >= 0 );
- assert( Error != NULL );
+ assert( Req != NULL );
- sprintf( msg, "Parse error: %s!", Error );
- return Conn_WriteStr( Idx, msg );
-} /* Parse_Error */
+ *Closed = FALSE;
+ /* ist ueberhaupt ein Prefix vorhanden? */
+ if( ! Req->prefix ) return TRUE;
+
+ /* Client-Struktur der Connection ermitteln */
+ client = Client_GetFromConn( Idx );
+ assert( client != NULL );
+
+ /* nur validieren, wenn bereits registrierte Verbindung */
+ if(( Client_Type( client ) != CLIENT_USER ) && ( Client_Type( client ) != CLIENT_SERVER ) && ( Client_Type( client ) != CLIENT_SERVICE ))
+ {
+ /* noch nicht registrierte Verbindung.
+ * Das Prefix wird ignoriert. */
+ Req->prefix = NULL;
+ return TRUE;
+ }
+
+ /* pruefen, ob der im Prefix angegebene Client bekannt ist */
+ c = Client_Search( Req->prefix );
+ if( ! c )
+ {
+ /* im Prefix angegebener Client ist nicht bekannt */
+ Log( LOG_ERR, "Invalid prefix \"%s\", client not known (connection %d)!?", Req->prefix, Idx );
+ if( ! Conn_WriteStr( Idx, "ERROR :Invalid prefix \"%s\", client not known!?", Req->prefix )) *Closed = TRUE;
+ return FALSE;
+ }
+
+ /* pruefen, ob der Client mit dem angegebenen Prefix in Richtung
+ * des Senders liegt, d.h. sicherstellen, dass das Prefix nicht
+ * gefaelscht ist */
+ if( Client_NextHop( c ) != client )
+ {
+ /* das angegebene Prefix ist aus dieser Richtung, also
+ * aus der gegebenen Connection, ungueltig! */
+ Log( LOG_ERR, "Spoofed prefix \"%s\" from \"%s\" (connection %d)!", Req->prefix, Client_Mask( Client_GetFromConn( Idx )), Idx );
+ Conn_Close( Idx, NULL, "Spoofed prefix", TRUE );
+ *Closed = TRUE;
+ return FALSE;
+ }
-LOCAL BOOLEAN Validate_Prefix( REQUEST *Req )
-{
- assert( Req != NULL );
return TRUE;
} /* Validate_Prefix */
-LOCAL BOOLEAN Validate_Command( REQUEST *Req )
+LOCAL BOOLEAN
+Validate_Command( CONN_ID Idx, REQUEST *Req, BOOLEAN *Closed )
{
+ assert( Idx >= 0 );
assert( Req != NULL );
+ *Closed = FALSE;
+
return TRUE;
} /* Validate_Comman */
-LOCAL BOOLEAN Validate_Args( REQUEST *Req )
+LOCAL BOOLEAN
+Validate_Args( CONN_ID Idx, REQUEST *Req, BOOLEAN *Closed )
{
+ assert( Idx >= 0 );
assert( Req != NULL );
+ *Closed = FALSE;
+
return TRUE;
} /* Validate_Args */
-LOCAL BOOLEAN Handle_Request( CONN_ID Idx, REQUEST *Req )
+LOCAL BOOLEAN
+Handle_Request( CONN_ID Idx, REQUEST *Req )
{
/* Client-Request verarbeiten. Bei einem schwerwiegenden Fehler
* wird die Verbindung geschlossen und FALSE geliefert. */
- CLIENT *client;
+ CLIENT *client, *target, *prefix;
+ CHAR str[LINE_LEN];
+ INT i;
assert( Idx >= 0 );
assert( Req != NULL );
assert( Req->command != NULL );
-#ifdef SNIFFER
- Log( LOG_DEBUG, " connection %d: '%s', %d %s,%s prefix.", Idx, Req->command, Req->argc, Req->argc == 1 ? "parameter" : "parameters", Req->prefix ? "" : " no" );
-#endif
-
client = Client_GetFromConn( Idx );
assert( client != NULL );
- if( strcasecmp( Req->command, "PASS" ) == 0 ) return IRC_PASS( client, Req );
+ /* Statuscode, der geforwarded werden muss? */
+ if(( strlen( Req->command ) == 3 ) && ( atoi( Req->command ) > 100 ))
+ {
+ /* Befehl ist ein Statuscode */
+
+ /* Zielserver ermitteln */
+ if(( Client_Type( client ) == CLIENT_SERVER ) && ( Req->argc > 0 )) target = Client_Search( Req->argv[0] );
+ else target = NULL;
+ if( ! target )
+ {
+ if( Req->argc > 0 ) Log( LOG_WARNING, "Unknown target for status code %s: \"%s\"", Req->command, Req->argv[0] );
+ else Log( LOG_WARNING, "Unknown target for status code %s!", Req->command );
+ return TRUE;
+ }
+ if( target == Client_ThisServer( ))
+ {
+ Log( LOG_DEBUG, "Ignored status code %s from \"%s\".", Req->command, Client_ID( client ));
+ return TRUE;
+ }
+
+ /* Quell-Client ermitteln */
+ if( ! Req->prefix[0] )
+ {
+ Log( LOG_WARNING, "Got status code without prefix!?" );
+ return TRUE;
+ }
+ else prefix = Client_Search( Req->prefix );
+ if( ! prefix )
+ {
+ Log( LOG_WARNING, "Got status code from unknown source: \"%s\"", Req->prefix );
+ return TRUE;
+ }
+
+ /* Statuscode weiterleiten */
+ strcpy( str, Req->command );
+ for( i = 0; i < Req->argc; i++ )
+ {
+ if( i < Req->argc - 1 ) strcat( str, " " );
+ else strcat( str, " :" );
+ strcat( str, Req->argv[i] );
+ }
+ return IRC_WriteStrClientPrefix( target, prefix, "%s", str );
+ }
+
+ if( strcasecmp( Req->command, "ADMIN" ) == 0 ) return IRC_ADMIN( client, Req );
+ else if( strcasecmp( Req->command, "AWAY" ) == 0 ) return IRC_AWAY( client, Req );
+ else if( strcasecmp( Req->command, "CONNECT" ) == 0 ) return IRC_CONNECT( client, Req );
+ else if( strcasecmp( Req->command, "DIE" ) == 0 ) return IRC_DIE( client, Req );
+ else if( strcasecmp( Req->command, "ERROR" ) == 0 ) return IRC_ERROR( client, Req );
+ else if( strcasecmp( Req->command, "INVITE" ) == 0 ) return IRC_INVITE( client, Req );
+ else if( strcasecmp( Req->command, "ISON" ) == 0 ) return IRC_ISON( client, Req );
+ else if( strcasecmp( Req->command, "JOIN" ) == 0 ) return IRC_JOIN( client, Req );
+ else if( strcasecmp( Req->command, "KICK" ) == 0 ) return IRC_KICK( client, Req );
+ else if( strcasecmp( Req->command, "KILL" ) == 0 ) return IRC_KILL( client, Req );
+ else if( strcasecmp( Req->command, "LINKS" ) == 0 ) return IRC_LINKS( client, Req );
+ else if( strcasecmp( Req->command, "LIST" ) == 0 ) return IRC_LIST( client, Req );
+ else if( strcasecmp( Req->command, "LUSERS" ) == 0 ) return IRC_LUSERS( client, Req );
+ else if( strcasecmp( Req->command, "MODE" ) == 0 ) return IRC_MODE( client, Req );
+ else if( strcasecmp( Req->command, "MOTD" ) == 0 ) return IRC_MOTD( client, Req );
+ else if( strcasecmp( Req->command, "NAMES" ) == 0 ) return IRC_NAMES( client, Req );
else if( strcasecmp( Req->command, "NICK" ) == 0 ) return IRC_NICK( client, Req );
- else if( strcasecmp( Req->command, "USER" ) == 0 ) return IRC_USER( client, Req );
- else if( strcasecmp( Req->command, "QUIT" ) == 0 ) return IRC_QUIT( client, Req );
+ else if( strcasecmp( Req->command, "NJOIN" ) == 0 ) return IRC_NJOIN( client, Req );
+ else if( strcasecmp( Req->command, "NOTICE" ) == 0 ) return IRC_NOTICE( client, Req );
+ else if( strcasecmp( Req->command, "OPER" ) == 0 ) return IRC_OPER( client, Req );
+ else if( strcasecmp( Req->command, "PART" ) == 0 ) return IRC_PART( client, Req );
+ else if( strcasecmp( Req->command, "PASS" ) == 0 ) return IRC_PASS( client, Req );
else if( strcasecmp( Req->command, "PING" ) == 0 ) return IRC_PING( client, Req );
else if( strcasecmp( Req->command, "PONG" ) == 0 ) return IRC_PONG( client, Req );
- else if( strcasecmp( Req->command, "MOTD" ) == 0 ) return IRC_MOTD( client, Req );
-
+ else if( strcasecmp( Req->command, "PRIVMSG" ) == 0 ) return IRC_PRIVMSG( client, Req );
+ else if( strcasecmp( Req->command, "QUIT" ) == 0 ) return IRC_QUIT( client, Req );
+ else if( strcasecmp( Req->command, "REHASH" ) == 0 ) return IRC_REHASH( client, Req );
+ else if( strcasecmp( Req->command, "RESTART" ) == 0 ) return IRC_RESTART( client, Req );
+ else if( strcasecmp( Req->command, "SERVER" ) == 0 ) return IRC_SERVER( client, Req );
+ else if( strcasecmp( Req->command, "SQUIT" ) == 0 ) return IRC_SQUIT( client, Req );
+ else if( strcasecmp( Req->command, "TOPIC" ) == 0 ) return IRC_TOPIC( client, Req );
+ else if( strcasecmp( Req->command, "USER" ) == 0 ) return IRC_USER( client, Req );
+ else if( strcasecmp( Req->command, "USERHOST" ) == 0 ) return IRC_USERHOST( client, Req );
+ else if( strcasecmp( Req->command, "VERSION" ) == 0 ) return IRC_VERSION( client, Req );
+ else if( strcasecmp( Req->command, "WHO" ) == 0 ) return IRC_WHO( client, Req );
+ else if( strcasecmp( Req->command, "WHOIS" ) == 0 ) return IRC_WHOIS( client, Req );
+ else if( strcasecmp( Req->command, "WHOWAS" ) == 0 ) return IRC_WHOWAS( client, Req );
+#ifdef IRCPLUS
+ else if( strcasecmp( Req->command, "CHANINFO" ) == 0 ) return IRC_CHANINFO( client, Req );
+#endif
+
/* Unbekannter Befehl */
- IRC_WriteStr_Client( client, This_Server, ERR_UNKNOWNCOMMAND_MSG, Client_Name( client ), Req->command );
+ if( Client_Type( client ) != CLIENT_SERVER ) IRC_WriteStrClient( client, ERR_UNKNOWNCOMMAND_MSG, Client_ID( client ), Req->command );
+ Log( LOG_DEBUG, "Connection %d: Unknown command \"%s\", %d %s,%s prefix.", Client_Conn( client ), Req->command, Req->argc, Req->argc == 1 ? "parameter" : "parameters", Req->prefix ? "" : " no" );
- Log( LOG_DEBUG, "Connection %d: Unknown command '%s', %d %s,%s prefix.", Idx, Req->command, Req->argc, Req->argc == 1 ? "parameter" : "parameters", Req->prefix ? "" : " no" );
-
return TRUE;
} /* Handle_Request */
projects / ngircd-alex.git / blobdiff