2001-12-12 18:18:38 +01:00
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/*
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* ngIRCd -- The Next Generation IRC Daemon
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* Copyright (c)2001 by Alexander Barton (alex@barton.de)
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*
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* Dieses Programm ist freie Software. Sie koennen es unter den Bedingungen
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* der GNU General Public License (GPL), wie von der Free Software Foundation
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* herausgegeben, weitergeben und/oder modifizieren, entweder unter Version 2
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* der Lizenz oder (wenn Sie es wuenschen) jeder spaeteren Version.
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* Naehere Informationen entnehmen Sie bitter der Datei COPYING. Eine Liste
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* der an comBase beteiligten Autoren finden Sie in der Datei AUTHORS.
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*
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2001-12-15 01:11:55 +01:00
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* $Id: conn.c,v 1.6 2001/12/15 00:11:55 alex Exp $
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2001-12-12 18:18:38 +01:00
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*
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* connect.h: Verwaltung aller Netz-Verbindungen ("connections")
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*
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* $Log: conn.c,v $
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2001-12-15 01:11:55 +01:00
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* Revision 1.6 2001/12/15 00:11:55 alex
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* - Lese- und Schreib-Puffer implementiert.
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* - einige neue (Unter-)Funktionen eingefuehrt.
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* - diverse weitere kleinere Aenderungen.
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*
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2001-12-14 09:16:47 +01:00
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* Revision 1.5 2001/12/14 08:16:47 alex
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* - Begonnen, Client-spezifische Lesepuffer zu implementieren.
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* - Umstellung auf Datentyp "CONN_ID".
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*
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2001-12-13 03:04:16 +01:00
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* Revision 1.4 2001/12/13 02:04:16 alex
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* - boesen "Speicherschiesser" in Log() gefixt.
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*
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2001-12-13 02:33:09 +01:00
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* Revision 1.3 2001/12/13 01:33:09 alex
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* - Conn_Handler() unterstuetzt nun einen Timeout.
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* - fuer Verbindungen werden keine FILE-Handles mehr benutzt.
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* - kleinere "Code Cleanups" ;-)
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*
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2001-12-13 00:32:02 +01:00
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* Revision 1.2 2001/12/12 23:32:02 alex
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* - diverse Erweiterungen und Verbesserungen (u.a. sind nun mehrere
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* Verbindungen und Listen-Sockets moeglich).
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*
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2001-12-12 18:18:38 +01:00
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* Revision 1.1 2001/12/12 17:18:38 alex
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* - Modul zur Verwaltung aller Netzwerk-Verbindungen begonnen.
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*/
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#include <portab.h>
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#include "global.h"
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#include <imp.h>
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#include <assert.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <string.h>
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#include <sys/socket.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#ifdef HAVE_STDINT_H
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#include <stdint.h> /* u.a. fuer Mac OS X */
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#endif
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2001-12-13 00:32:02 +01:00
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#include "ngircd.h"
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2001-12-12 18:18:38 +01:00
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#include "log.h"
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2001-12-13 00:32:02 +01:00
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#include "tool.h"
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2001-12-12 18:18:38 +01:00
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#include <exp.h>
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#include "conn.h"
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2001-12-14 09:16:47 +01:00
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#define MAX_CONNECTIONS 100 /* max. Anzahl von Verbindungen an diesem Server */
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2001-12-15 01:11:55 +01:00
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#define MAX_CMDLEN 512 /* max. Laenge eines Befehls, vgl. RFC 2812, 3.2 */
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#define READBUFFER_LEN 2 * MAX_CMDLEN /* Laenge des Lesepuffers je Verbindung (Bytes) */
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#define WRITEBUFFER_LEN 4096 /* Laenge des Schreibpuffers je Verbindung (Bytes) */
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2001-12-13 00:32:02 +01:00
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typedef struct _Connection
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{
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INT sock; /* Socket Handle */
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struct sockaddr_in addr; /* Adresse des Client */
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2001-12-15 01:11:55 +01:00
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CHAR rbuf[READBUFFER_LEN + 1]; /* Lesepuffer */
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INT rdatalen; /* Laenge der Daten im Lesepuffer */
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CHAR wbuf[WRITEBUFFER_LEN + 1]; /* Schreibpuffer */
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INT wdatalen; /* Laenge der Daten im Schreibpuffer */
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2001-12-13 00:32:02 +01:00
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} CONNECTION;
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2001-12-15 01:11:55 +01:00
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LOCAL VOID Handle_Read( INT sock );
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LOCAL BOOLEAN Handle_Write( CONN_ID Idx );
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2001-12-13 00:32:02 +01:00
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LOCAL VOID New_Connection( INT Sock );
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2001-12-14 09:16:47 +01:00
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LOCAL CONN_ID Socket2Index( INT Sock );
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2001-12-15 01:11:55 +01:00
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LOCAL VOID Close_Connection( CONN_ID Idx, CHAR *Msg );
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2001-12-14 09:16:47 +01:00
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LOCAL VOID Read_Request( CONN_ID Idx );
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2001-12-15 01:11:55 +01:00
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LOCAL BOOLEAN Try_Write( CONN_ID Idx );
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2001-12-13 00:32:02 +01:00
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LOCAL fd_set My_Listener;
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LOCAL fd_set My_Sockets;
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LOCAL INT My_Max_Fd;
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LOCAL CONNECTION My_Connections[MAX_CONNECTIONS];
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2001-12-12 18:18:38 +01:00
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GLOBAL VOID Conn_Init( VOID )
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{
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2001-12-14 09:16:47 +01:00
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CONN_ID i;
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2001-12-13 00:32:02 +01:00
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/* zu Beginn haben wir keine Verbindungen */
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FD_ZERO( &My_Listener );
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FD_ZERO( &My_Sockets );
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My_Max_Fd = 0;
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/* Connection-Struktur initialisieren */
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2001-12-15 01:11:55 +01:00
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for( i = 0; i < MAX_CONNECTIONS; i++ ) My_Connections[i].sock = NONE;
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2001-12-12 18:18:38 +01:00
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} /* Conn_Init */
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GLOBAL VOID Conn_Exit( VOID )
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{
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2001-12-14 09:16:47 +01:00
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CONN_ID idx;
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INT i;
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2001-12-13 00:32:02 +01:00
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/* Sockets schliessen */
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for( i = 0; i < My_Max_Fd + 1; i++ )
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{
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if( FD_ISSET( i, &My_Sockets ))
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{
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for( idx = 0; idx < MAX_CONNECTIONS; idx++ )
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{
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if( My_Connections[idx].sock == i ) break;
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}
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2001-12-15 01:11:55 +01:00
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if( idx < MAX_CONNECTIONS ) Close_Connection( idx, "Server going down ..." );
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2001-12-13 00:32:02 +01:00
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else if( FD_ISSET( i, &My_Listener ))
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{
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close( i );
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Log( LOG_INFO, "Closed listening socket %d.", i );
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}
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else
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{
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close( i );
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Log( LOG_WARNING, "Unknown connection %d closed.", i );
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}
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}
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}
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2001-12-12 18:18:38 +01:00
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} /* Conn_Exit */
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GLOBAL BOOLEAN Conn_New_Listener( CONST INT Port )
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{
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/* Neuen Listen-Socket erzeugen: der Server wartet dann
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* auf dem angegebenen Port auf Verbindungen. */
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2001-12-13 00:32:02 +01:00
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struct sockaddr_in addr;
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INT sock, on = 1;
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2001-12-12 18:18:38 +01:00
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/* Server-"Listen"-Socket initialisieren */
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2001-12-13 00:32:02 +01:00
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memset( &addr, 0, sizeof( addr ));
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addr.sin_family = AF_INET;
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addr.sin_port = htons( Port );
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addr.sin_addr.s_addr = htonl( INADDR_ANY );
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2001-12-12 18:18:38 +01:00
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/* Socket erzeugen */
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2001-12-13 00:32:02 +01:00
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sock = socket( PF_INET, SOCK_STREAM, 0);
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2001-12-13 03:04:16 +01:00
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if( sock < 0 )
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2001-12-12 18:18:38 +01:00
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{
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2001-12-13 00:32:02 +01:00
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Log( LOG_ALERT, "Can't create socket: %s", strerror( errno ));
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2001-12-12 18:18:38 +01:00
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return FALSE;
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}
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/* Socket-Optionen setzen */
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2001-12-13 00:32:02 +01:00
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if( fcntl( sock, F_SETFL, O_NONBLOCK ) != 0 )
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2001-12-12 18:18:38 +01:00
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{
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2001-12-13 00:32:02 +01:00
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Log( LOG_ALERT, "Can't enable non-blocking mode: %s", strerror( errno ));
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close( sock );
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2001-12-12 18:18:38 +01:00
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return FALSE;
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}
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2001-12-13 00:32:02 +01:00
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if( setsockopt( sock, SOL_SOCKET, SO_REUSEADDR, &on, (socklen_t)sizeof( on )) != 0)
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2001-12-12 18:18:38 +01:00
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{
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2001-12-13 00:32:02 +01:00
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Log( LOG_CRIT, "Can't set socket options: %s", strerror( errno ));
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2001-12-12 18:18:38 +01:00
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/* dieser Fehler kann ignoriert werden. */
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}
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2001-12-13 00:32:02 +01:00
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2001-12-12 18:18:38 +01:00
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/* an Port binden */
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2001-12-13 00:32:02 +01:00
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if( bind( sock, (struct sockaddr *)&addr, (socklen_t)sizeof( addr )) != 0 )
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2001-12-12 18:18:38 +01:00
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{
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2001-12-13 00:32:02 +01:00
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Log( LOG_ALERT, "Can't bind socket: %s", strerror( errno ));
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close( sock );
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2001-12-12 18:18:38 +01:00
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return FALSE;
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}
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/* in "listen mode" gehen :-) */
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2001-12-13 00:32:02 +01:00
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if( listen( sock, 10 ) != 0 )
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2001-12-12 18:18:38 +01:00
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{
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2001-12-13 00:32:02 +01:00
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Log( LOG_ALERT, "Can't listen on soecket: %s", strerror( errno ));
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close( sock );
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2001-12-12 18:18:38 +01:00
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return FALSE;
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}
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2001-12-13 00:32:02 +01:00
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/* Neuen Listener in Strukturen einfuegen */
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FD_SET( sock, &My_Listener );
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FD_SET( sock, &My_Sockets );
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2001-12-12 18:18:38 +01:00
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2001-12-13 00:32:02 +01:00
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if( sock > My_Max_Fd ) My_Max_Fd = sock;
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2001-12-14 09:16:47 +01:00
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Log( LOG_INFO, "Now listening on port %d, socket %d.", Port, sock );
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2001-12-13 00:32:02 +01:00
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2001-12-12 18:18:38 +01:00
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return TRUE;
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} /* Conn_New_Listener */
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2001-12-13 02:33:09 +01:00
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GLOBAL VOID Conn_Handler( INT Timeout )
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2001-12-12 18:18:38 +01:00
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{
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2001-12-15 01:11:55 +01:00
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fd_set read_sockets, write_sockets;
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2001-12-13 02:33:09 +01:00
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struct timeval tv;
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2001-12-13 00:32:02 +01:00
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INT i;
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2001-12-13 02:33:09 +01:00
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/* Timeout initialisieren */
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tv.tv_sec = Timeout;
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tv.tv_usec = 0;
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2001-12-13 00:32:02 +01:00
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2001-12-15 01:11:55 +01:00
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/* noch volle Schreib-Puffer suchen */
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FD_ZERO( &write_sockets );
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for( i = 0; i < MAX_CONNECTIONS; i++ )
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{
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if(( My_Connections[i].sock >= 0 ) && ( My_Connections[i].wdatalen > 0 ))
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{
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/* Socket der Verbindung in Set aufnehmen */
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FD_SET( My_Connections[i].sock, &write_sockets );
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}
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}
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2001-12-13 00:32:02 +01:00
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read_sockets = My_Sockets;
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2001-12-15 01:11:55 +01:00
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if( select( My_Max_Fd + 1, &read_sockets, &write_sockets, NULL, &tv ) == -1 )
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2001-12-13 00:32:02 +01:00
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{
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2001-12-13 02:33:09 +01:00
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if( errno != EINTR ) Log( LOG_ALERT, "select(): %s", strerror( errno ));
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2001-12-13 00:32:02 +01:00
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return;
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}
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2001-12-15 01:11:55 +01:00
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/* Koennen Daten geschrieben werden? */
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for( i = 0; i < My_Max_Fd + 1; i++ )
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{
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if( FD_ISSET( i, &write_sockets )) Handle_Write( Socket2Index( i ));
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}
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/* Daten zum Lesen vorhanden? */
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2001-12-13 00:32:02 +01:00
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for( i = 0; i < My_Max_Fd + 1; i++ )
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{
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2001-12-15 01:11:55 +01:00
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if( FD_ISSET( i, &read_sockets )) Handle_Read( i );
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2001-12-13 00:32:02 +01:00
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}
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} /* Conn_Handler */
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2001-12-15 01:11:55 +01:00
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GLOBAL BOOLEAN Conn_WriteStr( CONN_ID Idx, CHAR *Data )
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{
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/* String in Socket schreiben. CR+LF wird von dieser Funktion
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* automatisch angehaengt. */
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CHAR buffer[MAX_CMDLEN];
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if( strlen( Data ) > MAX_CMDLEN - 2 )
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{
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Log( LOG_ALERT, "String too long to send (connection %d)!", Idx );
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Close_Connection( Idx, "Server error: String too long to send!" );
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|
return FALSE;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
sprintf( buffer, "%s\r\n", Data );
|
|
|
|
|
return Conn_Write( Idx, buffer, strlen( buffer ));
|
|
|
|
|
} /* Conn_WriteStr */
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
GLOBAL BOOLEAN Conn_Write( CONN_ID Idx, CHAR *Data, INT Len )
|
|
|
|
|
{
|
|
|
|
|
/* Daten in Socket schreiben. Bei "fatalen" Fehlern wird
|
|
|
|
|
* der Client disconnectiert und FALSE geliefert. */
|
|
|
|
|
|
|
|
|
|
assert( Idx >= 0 );
|
|
|
|
|
assert( My_Connections[Idx].sock >= 0 );
|
|
|
|
|
assert( Data != NULL );
|
|
|
|
|
assert( Len > 0 );
|
|
|
|
|
|
|
|
|
|
/* pruefen, ob Daten im Schreibpuffer sind. Wenn ja, zunaechst
|
|
|
|
|
* pruefen, ob diese gesendet werden koennen */
|
|
|
|
|
if( My_Connections[Idx].wdatalen > 0 )
|
|
|
|
|
{
|
|
|
|
|
if( ! Try_Write( Idx )) return FALSE;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* pruefen, ob im Schreibpuffer genuegend Platz ist */
|
|
|
|
|
if( WRITEBUFFER_LEN - My_Connections[Idx].wdatalen - Len <= 0 )
|
|
|
|
|
{
|
|
|
|
|
/* der Puffer ist dummerweise voll ... */
|
|
|
|
|
Log( LOG_NOTICE, "Write buffer overflow (connection %d)!", Idx );
|
|
|
|
|
Close_Connection( Idx, NULL );
|
|
|
|
|
return FALSE;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Daten in Puffer kopieren */
|
|
|
|
|
memcpy( My_Connections[Idx].wbuf + My_Connections[Idx].wdatalen, Data, Len );
|
|
|
|
|
My_Connections[Idx].wdatalen += Len;
|
|
|
|
|
|
|
|
|
|
/* pruefen, on Daten vorhanden sind und geschrieben werden koennen */
|
|
|
|
|
if( My_Connections[Idx].wdatalen > 0 )
|
|
|
|
|
{
|
|
|
|
|
if( ! Try_Write( Idx )) return FALSE;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return TRUE;
|
|
|
|
|
} /* Conn_Write */
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
LOCAL BOOLEAN Try_Write( CONN_ID Idx )
|
|
|
|
|
{
|
|
|
|
|
/* Versuchen, Daten aus dem Schreib-Puffer in den
|
|
|
|
|
* Socket zu schreiben. */
|
|
|
|
|
|
|
|
|
|
fd_set write_socket;
|
|
|
|
|
|
|
|
|
|
assert( Idx >= 0 );
|
|
|
|
|
assert( My_Connections[Idx].sock >= 0 );
|
|
|
|
|
assert( My_Connections[Idx].wdatalen > 0 );
|
|
|
|
|
|
|
|
|
|
FD_ZERO( &write_socket );
|
|
|
|
|
FD_SET( My_Connections[Idx].sock, &write_socket );
|
|
|
|
|
if( select( My_Connections[Idx].sock + 1, NULL, &write_socket, NULL, 0 ) == -1 )
|
|
|
|
|
{
|
|
|
|
|
/* Fehler! */
|
|
|
|
|
if( errno != EINTR )
|
|
|
|
|
{
|
|
|
|
|
Log( LOG_ALERT, "select(): %s", strerror( errno ));
|
|
|
|
|
Close_Connection( Idx, NULL );
|
|
|
|
|
return FALSE;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if( FD_ISSET( My_Connections[Idx].sock, &write_socket )) return Handle_Write( Idx );
|
|
|
|
|
else return TRUE;
|
|
|
|
|
} /* Try_Write */
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
LOCAL VOID Handle_Read( INT Sock )
|
2001-12-13 00:32:02 +01:00
|
|
|
|
{
|
|
|
|
|
/* Aktivitaet auf einem Socket verarbeiten */
|
|
|
|
|
|
2001-12-14 09:16:47 +01:00
|
|
|
|
CONN_ID idx;
|
2001-12-15 01:11:55 +01:00
|
|
|
|
|
|
|
|
|
assert( Sock >= 0 );
|
2001-12-13 00:32:02 +01:00
|
|
|
|
|
|
|
|
|
if( FD_ISSET( Sock, &My_Listener ))
|
|
|
|
|
{
|
|
|
|
|
/* es ist einer unserer Listener-Sockets: es soll
|
|
|
|
|
* also eine neue Verbindung aufgebaut werden. */
|
|
|
|
|
|
|
|
|
|
New_Connection( Sock );
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
/* Ein Client Socket: entweder ein User oder Server */
|
|
|
|
|
|
|
|
|
|
idx = Socket2Index( Sock );
|
2001-12-13 02:33:09 +01:00
|
|
|
|
Read_Request( idx );
|
2001-12-13 00:32:02 +01:00
|
|
|
|
}
|
2001-12-15 01:11:55 +01:00
|
|
|
|
} /* Handle_Read */
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
LOCAL BOOLEAN Handle_Write( CONN_ID Idx )
|
|
|
|
|
{
|
|
|
|
|
/* Daten aus Schreibpuffer versenden */
|
|
|
|
|
|
|
|
|
|
INT len;
|
|
|
|
|
|
|
|
|
|
assert( Idx >= 0 );
|
|
|
|
|
assert( My_Connections[Idx].sock >= 0 );
|
|
|
|
|
assert( My_Connections[Idx].wdatalen > 0 );
|
|
|
|
|
|
|
|
|
|
/* Daten schreiben */
|
|
|
|
|
len = send( My_Connections[Idx].sock, My_Connections[Idx].wbuf, My_Connections[Idx].wdatalen, 0 );
|
|
|
|
|
if( len < 0 )
|
|
|
|
|
{
|
|
|
|
|
/* Oops, ein Fehler! */
|
|
|
|
|
Log( LOG_ALERT, "Write error (buffer) on connection %d: %s", Idx, strerror( errno ));
|
|
|
|
|
Close_Connection( Idx, NULL );
|
|
|
|
|
return FALSE;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Puffer anpassen */
|
|
|
|
|
My_Connections[Idx].wdatalen -= len;
|
|
|
|
|
memmove( My_Connections[Idx].wbuf, My_Connections[Idx].wbuf + len, My_Connections[Idx].wdatalen );
|
|
|
|
|
|
|
|
|
|
return TRUE;
|
|
|
|
|
} /* Handle_Write */
|
2001-12-13 00:32:02 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
LOCAL VOID New_Connection( INT Sock )
|
|
|
|
|
{
|
2001-12-15 01:11:55 +01:00
|
|
|
|
/* Neue Client-Verbindung von Listen-Socket annehmen */
|
|
|
|
|
|
2001-12-13 00:32:02 +01:00
|
|
|
|
struct sockaddr_in new_addr;
|
2001-12-14 09:16:47 +01:00
|
|
|
|
INT new_sock, new_sock_len;
|
|
|
|
|
CONN_ID idx;
|
2001-12-15 01:11:55 +01:00
|
|
|
|
|
|
|
|
|
assert( Sock >= 0 );
|
2001-12-12 18:18:38 +01:00
|
|
|
|
|
2001-12-13 00:32:02 +01:00
|
|
|
|
new_sock_len = sizeof( new_addr );
|
2001-12-13 03:04:16 +01:00
|
|
|
|
new_sock = accept( Sock, (struct sockaddr *)&new_addr, (socklen_t *)&new_sock_len );
|
2001-12-13 00:32:02 +01:00
|
|
|
|
if( new_sock < 0 )
|
|
|
|
|
{
|
|
|
|
|
Log( LOG_CRIT, "Can't accept connection: %s", strerror( errno ));
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Freie Connection-Struktur suschen */
|
|
|
|
|
for( idx = 0; idx < MAX_CONNECTIONS; idx++ ) if( My_Connections[idx].sock < 0 ) break;
|
|
|
|
|
if( idx >= MAX_CONNECTIONS )
|
2001-12-12 18:18:38 +01:00
|
|
|
|
{
|
2001-12-15 01:11:55 +01:00
|
|
|
|
Log( LOG_ALERT, "Can't accept connection: limit reached (%d)!", MAX_CONNECTIONS );
|
2001-12-13 00:32:02 +01:00
|
|
|
|
close( new_sock );
|
2001-12-12 18:18:38 +01:00
|
|
|
|
return;
|
|
|
|
|
}
|
2001-12-13 00:32:02 +01:00
|
|
|
|
|
|
|
|
|
/* Verbindung registrieren */
|
|
|
|
|
My_Connections[idx].sock = new_sock;
|
|
|
|
|
My_Connections[idx].addr = new_addr;
|
2001-12-15 01:11:55 +01:00
|
|
|
|
My_Connections[idx].rdatalen = 0;
|
|
|
|
|
My_Connections[idx].wdatalen = 0;
|
2001-12-13 00:32:02 +01:00
|
|
|
|
|
|
|
|
|
/* Neuen Socket registrieren */
|
|
|
|
|
FD_SET( new_sock, &My_Sockets );
|
|
|
|
|
|
|
|
|
|
if( new_sock > My_Max_Fd ) My_Max_Fd = new_sock;
|
2001-12-12 18:18:38 +01:00
|
|
|
|
|
2001-12-15 01:11:55 +01:00
|
|
|
|
Log( LOG_NOTICE, "Accepted connection %d from %s:%d on socket %d.", idx, inet_ntoa( new_addr.sin_addr ), ntohs( new_addr.sin_port), Sock );
|
2001-12-13 00:32:02 +01:00
|
|
|
|
} /* New_Connection */
|
|
|
|
|
|
|
|
|
|
|
2001-12-14 09:16:47 +01:00
|
|
|
|
LOCAL CONN_ID Socket2Index( INT Sock )
|
2001-12-13 00:32:02 +01:00
|
|
|
|
{
|
2001-12-15 01:11:55 +01:00
|
|
|
|
/* zum Socket passende Connection suchen */
|
|
|
|
|
|
2001-12-14 09:16:47 +01:00
|
|
|
|
CONN_ID idx;
|
2001-12-13 00:32:02 +01:00
|
|
|
|
|
2001-12-15 01:11:55 +01:00
|
|
|
|
assert( Sock >= 0 );
|
|
|
|
|
|
2001-12-13 00:32:02 +01:00
|
|
|
|
for( idx = 0; idx < MAX_CONNECTIONS; idx++ ) if( My_Connections[idx].sock == Sock ) break;
|
|
|
|
|
|
2001-12-15 01:11:55 +01:00
|
|
|
|
assert( idx < MAX_CONNECTIONS );
|
2001-12-13 00:32:02 +01:00
|
|
|
|
return idx;
|
|
|
|
|
} /* Socket2Index */
|
|
|
|
|
|
|
|
|
|
|
2001-12-15 01:11:55 +01:00
|
|
|
|
LOCAL VOID Close_Connection( CONN_ID Idx, CHAR *Msg )
|
2001-12-13 00:32:02 +01:00
|
|
|
|
{
|
|
|
|
|
/* Verbindung schlie<69>en */
|
|
|
|
|
|
2001-12-15 01:11:55 +01:00
|
|
|
|
CHAR bye_str[MAX_CMDLEN];
|
|
|
|
|
|
|
|
|
|
assert( Idx >= 0 );
|
2001-12-13 00:32:02 +01:00
|
|
|
|
assert( My_Connections[Idx].sock >= 0 );
|
|
|
|
|
|
2001-12-15 01:11:55 +01:00
|
|
|
|
if( Msg )
|
|
|
|
|
{
|
|
|
|
|
sprintf( bye_str, "ERROR :%s", Msg );
|
|
|
|
|
Conn_WriteStr( Idx, bye_str );
|
|
|
|
|
}
|
|
|
|
|
|
2001-12-13 02:33:09 +01:00
|
|
|
|
if( close( My_Connections[Idx].sock ) != 0 )
|
2001-12-13 00:32:02 +01:00
|
|
|
|
{
|
2001-12-15 01:11:55 +01:00
|
|
|
|
Log( LOG_ERR, "Error closing connection %d with %s:%d - %s", Idx, inet_ntoa( My_Connections[Idx].addr.sin_addr ), ntohs( My_Connections[Idx].addr.sin_port), strerror( errno ));
|
2001-12-13 00:32:02 +01:00
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
2001-12-15 01:11:55 +01:00
|
|
|
|
Log( LOG_NOTICE, "Closed connection %d with %s:%d.", Idx, inet_ntoa( My_Connections[Idx].addr.sin_addr ), ntohs( My_Connections[Idx].addr.sin_port ));
|
2001-12-13 00:32:02 +01:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
FD_CLR( My_Connections[Idx].sock, &My_Sockets );
|
2001-12-14 09:16:47 +01:00
|
|
|
|
My_Connections[Idx].sock = NONE;
|
2001-12-13 00:32:02 +01:00
|
|
|
|
} /* Close_Connection */
|
|
|
|
|
|
|
|
|
|
|
2001-12-14 09:16:47 +01:00
|
|
|
|
LOCAL VOID Read_Request( CONN_ID Idx )
|
2001-12-13 00:32:02 +01:00
|
|
|
|
{
|
2001-12-13 02:33:09 +01:00
|
|
|
|
/* Daten von Socket einlesen und entsprechend behandeln.
|
|
|
|
|
* Tritt ein Fehler auf, so wird der Socket geschlossen. */
|
2001-12-13 00:32:02 +01:00
|
|
|
|
|
2001-12-13 02:33:09 +01:00
|
|
|
|
INT len;
|
2001-12-15 01:11:55 +01:00
|
|
|
|
CHAR *ptr;
|
|
|
|
|
|
|
|
|
|
assert( Idx >= 0 );
|
|
|
|
|
assert( My_Connections[Idx].sock >= 0 );
|
2001-12-13 00:32:02 +01:00
|
|
|
|
|
2001-12-15 01:11:55 +01:00
|
|
|
|
len = recv( My_Connections[Idx].sock, My_Connections[Idx].rbuf + My_Connections[Idx].rdatalen, READBUFFER_LEN - My_Connections[Idx].rdatalen, 0 );
|
|
|
|
|
My_Connections[Idx].rbuf[READBUFFER_LEN] = '\0';
|
2001-12-13 02:33:09 +01:00
|
|
|
|
|
|
|
|
|
if( len == 0 )
|
|
|
|
|
{
|
|
|
|
|
/* Socket wurde geschlossen */
|
2001-12-15 01:11:55 +01:00
|
|
|
|
Close_Connection( Idx, NULL );
|
2001-12-13 02:33:09 +01:00
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if( len < 0 )
|
2001-12-13 00:32:02 +01:00
|
|
|
|
{
|
2001-12-13 02:33:09 +01:00
|
|
|
|
/* Fehler beim Lesen */
|
2001-12-15 01:11:55 +01:00
|
|
|
|
Log( LOG_ALERT, "Read error on connection %d!", Idx );
|
|
|
|
|
Close_Connection( Idx, "Read error!" );
|
2001-12-13 00:32:02 +01:00
|
|
|
|
return;
|
|
|
|
|
}
|
2001-12-14 09:16:47 +01:00
|
|
|
|
|
2001-12-15 01:11:55 +01:00
|
|
|
|
My_Connections[Idx].rdatalen += len;
|
|
|
|
|
assert( My_Connections[Idx].rdatalen <= READBUFFER_LEN );
|
|
|
|
|
My_Connections[Idx].rbuf[My_Connections[Idx].rdatalen] = '\0';
|
2001-12-12 18:18:38 +01:00
|
|
|
|
|
2001-12-15 01:11:55 +01:00
|
|
|
|
if( My_Connections[Idx].rdatalen > MAX_CMDLEN )
|
|
|
|
|
{
|
|
|
|
|
/* Eine Anfrage darf(!) nicht laenger als 512 Zeichen
|
|
|
|
|
* (incl. CR+LF!) werden; vgl. RFC 2812. Wenn soetwas
|
|
|
|
|
* empfangen wird, wird der Client disconnectiert. */
|
|
|
|
|
Log( LOG_ALERT, "Request too long (connection %d)!", Idx );
|
|
|
|
|
Close_Connection( Idx, "Request too long!" );
|
|
|
|
|
return;
|
|
|
|
|
}
|
2001-12-13 02:33:09 +01:00
|
|
|
|
|
2001-12-15 01:11:55 +01:00
|
|
|
|
/* Eine komplette Anfrage muss mit CR+LF enden, vgl.
|
|
|
|
|
* RFC 2812. Haben wir eine? */
|
|
|
|
|
ptr = strstr( My_Connections[Idx].rbuf, "\r\n" );
|
|
|
|
|
if( ptr )
|
2001-12-13 02:33:09 +01:00
|
|
|
|
{
|
2001-12-15 01:11:55 +01:00
|
|
|
|
/* Ende der Anfrage (CR+LF) wurde gefunden */
|
|
|
|
|
*ptr = '\0';
|
|
|
|
|
len = ( ptr - My_Connections[Idx].rbuf ) + 2;
|
|
|
|
|
if( len > 2 )
|
2001-12-13 02:33:09 +01:00
|
|
|
|
{
|
2001-12-15 01:11:55 +01:00
|
|
|
|
printf( " in: '%s'\n", My_Connections[Idx].rbuf );
|
2001-12-13 02:33:09 +01:00
|
|
|
|
}
|
2001-12-15 01:11:55 +01:00
|
|
|
|
else Log( LOG_DEBUG, "Got null-request (connection %d).", Idx );
|
|
|
|
|
|
|
|
|
|
/* Puffer anpassen */
|
|
|
|
|
My_Connections[Idx].rdatalen -= len;
|
|
|
|
|
memmove( My_Connections[Idx].rbuf, My_Connections[Idx].rbuf + len, My_Connections[Idx].rdatalen );
|
2001-12-13 02:33:09 +01:00
|
|
|
|
}
|
2001-12-15 01:11:55 +01:00
|
|
|
|
} /* Read_Request */
|
2001-12-13 02:33:09 +01:00
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2001-12-12 18:18:38 +01:00
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/* -eof- */
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