ipvsadm-1.24.tar.gz

/* * ipvsadm - IP Virtual Server ADMinistration program * for IPVS NetFilter Module in kernel 2.4 * * Version: $Id: ipvsadm.c,v 1.27 2005/12/10 16:00:07 wensong Exp $ * * Authors: Wensong Zhang <wensong@linuxvirtualserver.org> * Peter Kese <peter.kese@ijs.si> * * This program is based on ippfvsadm. * * Changes: * Wensong Zhang : added the editting service & destination support * Wensong Zhang : added the feature to specify persistent port * Jacob Rief : found the bug that masquerading dest of * different vport and dport cannot be deleted. * Wensong Zhang : fixed it and changed some cosmetic things * Wensong Zhang : added the timeout setting for persistent service * Wensong Zhang : added specifying the dest weight zero * Wensong Zhang : fixed the -E and -e options * Wensong Zhang : added the long options * Wensong Zhang : added the hostname and portname input * Wensong Zhang : added the hostname and portname output * Lars Marowsky-Br�e : added persistence granularity support * Julian Anastasov : fixed the (null) print for unknown services * Wensong Zhang : added the port_to_anyname function * Horms : added option to read commands from stdin * Horms : modified usage function so it prints to * : stdout if an exit value of 0 is used and * : stdout otherwise. Program is then terminated * : with the supplied exit value. * Horms : updated manpage and usage funtion so * : the reflect the options available * Wensong Zhang : added option to write rules to stdout * Horms : added ability to specify a fwmark * : instead of a server and port for * : a virtual service * Horms : tightened up checking of services * : in parse_service * Horms : ensure that a -r is passed when needed * Wensong Zhang : fixed the output of fwmark rules * Horms : added kernel version verification * Horms : Specifying command and option options * (e.g. -Ln or -At) in one short option * with popt problem fixed. * Wensong Zhang : split the process_options and make * two versions of parse_options. * Horms : attempting to save or restore when * compiled against getopt_long now results * in an informative error message rather * than the usage information * Horms : added -v option * Wensong Zhang : rewrite most code of parsing options and * processing options. * Alexandre Cassen : added ipvs_syncd SyncdID support to filter * incoming sync messages. * Guy Waugh & Ratz : added --exact option and spelling cleanup * * * ippfvsadm - Port Fowarding & Virtual Server ADMinistration program * * Copyright (c) 1998 Wensong Zhang * All rights reserved. * * Author: Wensong Zhang <wensong@iinchina.net> * * This ippfvsadm is derived from Steven Clarke's ipportfw program. * * portfw - Port Forwarding Table Editing v1.1 * * Copyright (c) 1997 Steven Clarke * All rights reserved. * * Author: Steven Clarke <steven@monmouth.demon.co.uk> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * */ #undef __KERNEL__ /* Makefile lazyness ;) */ #include <stdio.h> #include <stdlib.h> #include <getopt.h> #include <netdb.h> #include <string.h> #include <unistd.h> #include <errno.h> #include <ctype.h> #include <stdarg.h> #include <netinet/in.h> #include <sys/socket.h> #include <sys/types.h> #include <sys/param.h> #include <sys/wait.h> /* For waitpid */ #include <arpa/inet.h> #include <net/if.h> #include <netinet/ip_icmp.h> #include <netinet/udp.h> #include <netinet/tcp.h> #ifdef HAVE_POPT #include "popt.h" #define IPVS_OPTION_PROCESSING "popt" #else #define IPVS_OPTION_PROCESSING "getopt_long" #endif #include "config_stream.h" #include "libipvs/libipvs.h" #define IPVSADM_VERSION_NO "v" VERSION #define IPVSADM_VERSION_DATE "2005/12/10" #define IPVSADM_VERSION IPVSADM_VERSION_NO " " IPVSADM_VERSION_DATE #define MAX_TIMEOUT (86400*31) /* 31 days */ #define CMD_NONE 0 #define CMD_ADD (CMD_NONE+1) #define CMD_EDIT (CMD_NONE+2) #define CMD_DEL (CMD_NONE+3) #define CMD_FLUSH (CMD_NONE+4) #define CMD_LIST (CMD_NONE+5) #define CMD_ADDDEST (CMD_NONE+6) #define CMD_DELDEST (CMD_NONE+7) #define CMD_EDITDEST (CMD_NONE+8) #define CMD_TIMEOUT (CMD_NONE+9) #define CMD_STARTDAEMON (CMD_NONE+10) #define CMD_STOPDAEMON (CMD_NONE+11) #define CMD_RESTORE (CMD_NONE+12) #define CMD_SAVE (CMD_NONE+13) #define CMD_ZERO (CMD_NONE+14) #define CMD_MAX CMD_ZERO #define NUMBER_OF_CMD (CMD_MAX - CMD_NONE) static const char* cmdnames[] = { "add-service", "edit-service", "delete-service", "flush", "list", "add-server", "delete-server", "edit-server", "set", "start-daemon", "stop-daemon", "restore", "save", "zero", }; #define OPT_NONE 0x000000 #define OPT_NUMERIC 0x000001 #define OPT_CONNECTION 0x000002 #define OPT_SERVICE 0x000004 #define OPT_SCHEDULER 0x000008 #define OPT_PERSISTENT 0x000010 #define OPT_NETMASK 0x000020 #define OPT_SERVER 0x000040 #define OPT_FORWARD 0x000080 #define OPT_WEIGHT 0x000100 #define OPT_UTHRESHOLD 0x000200 #define OPT_LTHRESHOLD 0x000400 #define OPT_MCAST 0x000800 #define OPT_TIMEOUT 0x001000 #define OPT_DAEMON 0x002000 #define OPT_STATS 0x004000 #define OPT_RATE 0x008000 #define OPT_THRESHOLDS 0x010000 #define OPT_PERSISTENTCONN 0x020000 #define OPT_SORT 0x040000 #define OPT_SYNCID 0x080000 #define OPT_EXACT 0x100000 #define NUMBER_OF_OPT 21 static const char* optnames[] = { "numeric", "connection", "service-address", "scheduler", "persistent", "netmask", "real-server", "forwarding-method", "weight", "u-threshold", "l-threshold", "mcast-interface", "timeout", "daemon", "stats", "rate", "thresholds", "persistent-conn", "sort", "syncid", "exact", }; /* * Table of legal combinations of commands and options. * Key: * '+' compulsory * 'x' illegal * '1' exclusive (only one '1' option can be supplied) * ' ' optional */ static const char commands_v_options[NUMBER_OF_CMD][NUMBER_OF_OPT] = { /* -n -c svc -s -p -M -r fwd -w -x -y -mc tot dmn -st -rt thr -pc srt sid -ex */ /*ADD*/ {'x', 'x', '+', ' ', ' ', ' ', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x'}, /*EDIT*/ {'x', 'x', '+', ' ', ' ', ' ', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x', 'x