1496 lines
43 KiB
C
1496 lines
43 KiB
C
/*****************************************************************************
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*
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* $Id$
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* Purpose ...............: MBSE BBS Task Manager
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*
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*****************************************************************************
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* Copyright (C) 1997-2001
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*
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* Michiel Broek FIDO: 2:280/2802
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* Beekmansbos 10
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* 1971 BV IJmuiden
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* the Netherlands
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*
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* This file is part of MBSE BBS.
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*
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* This BBS is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2, or (at your option) any
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* later version.
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*
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* MBSE BBS is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with MBSE BBS; see the file COPYING. If not, write to the Free
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* Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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*****************************************************************************/
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#include "libs.h"
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#include "../lib/structs.h"
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#include "signame.h"
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#include "taskstat.h"
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#include "taskutil.h"
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#include "taskregs.h"
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#include "taskcomm.h"
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#include "outstat.h"
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#include "nodelist.h"
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#include "mbtask.h"
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/*
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* Defines.
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* SLOWRUN is number of seconds for mailer calls. Use between 5 and 30.
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*/
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#define MAXTASKS 10
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#define SLOWRUN 20
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#define TMPNAME "TMP."
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#define LCKNAME "LOCKTASK"
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#define ICMP_BASEHDR_LEN 8
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#define ICMP_MAX_ERRS 5
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#define SET_SOCKA_LEN4(socka)
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typedef enum {P_INIT, P_SENT, P_FAIL, P_OK, P_ERROR, P_NONE} PINGSTATE;
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/*
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* Global variables
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*/
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static onetask task[MAXTASKS]; /* Array with tasks */
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reg_info reginfo[MAXCLIENT]; /* Array with clients */
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static pid_t pgrp; /* Pids group */
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static char lockfile[PATH_MAX]; /* Lockfile */
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int sock = -1; /* Datagram socket */
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struct sockaddr_un servaddr; /* Server address */
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struct sockaddr_un from; /* From address */
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int fromlen;
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static char spath[PATH_MAX]; /* Socket path */
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int logtrans = 0; /* Log transactions */
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struct taskrec TCFG; /* Task config record */
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struct sysconfig CFG; /* System config */
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struct _nodeshdr nodeshdr; /* Nodes header record */
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struct _nodes nodes; /* Nodes data record */
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struct _fidonethdr fidonethdr; /* Fidonet header rec. */
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struct _fidonet fidonet; /* Fidonet data record */
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time_t tcfg_time; /* Config record time */
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time_t cfg_time; /* Config record time */
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char tcfgfn[PATH_MAX]; /* Config file name */
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char cfgfn[PATH_MAX]; /* Config file name */
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int ping_isocket; /* Ping socket */
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int icmp_errs = 0; /* ICMP error counter */
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int internet = FALSE; /* Internet is down */
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float Load; /* System Load */
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int Processing; /* Is system running */
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int ZMH = FALSE; /* Zone Mail Hour */
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int UPSalarm = FALSE; /* UPS alarm status */
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extern int s_bbsopen; /* BBS open semafore */
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extern int s_scanout; /* Scan outbound sema */
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extern int s_mailout; /* Mail out semafore */
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extern int s_mailin; /* Mail in semafore */
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extern int s_index; /* Compile nl semafore */
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extern int s_newnews; /* New news semafore */
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extern int s_reqindex; /* Create req index sem */
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extern int s_msglink; /* Messages link sem */
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int pingstate = P_INIT; /* Ping state */
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int pingnr = 1; /* Ping #, 1 or 2 */
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int pingresult[2]; /* Ping results */
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char pingaddress[41]; /* Ping current address */
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int masterinit = FALSE; /* Master init needed */
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/*
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* Load main configuration, if it doesn't exist, create it.
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* This is the case the very first time when you start MBSE BBS.
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*/
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void load_maincfg(void)
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{
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FILE *fp;
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struct utsname un;
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int i;
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if ((fp = fopen(cfgfn, "r")) == NULL) {
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masterinit = TRUE;
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memset(&CFG, 0, sizeof(CFG));
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/*
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* Fill Registration defaults
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*/
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sprintf(CFG.bbs_name, "MBSE BBS");
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uname((struct utsname *)&un);
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#ifdef __USE_GNU
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sprintf(CFG.sysdomain, "%s.%s", un.nodename, un.domainname);
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#else
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#ifdef __linux__
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sprintf(CFG.sysdomain, "%s.%s", un.nodename, un.__domainname);
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#endif
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#endif
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sprintf(CFG.comment, "MBSE BBS development");
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sprintf(CFG.origin, "MBSE BBS. Made in the Netherlands");
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sprintf(CFG.location, "Earth");
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/*
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* Fill Filenames defaults
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*/
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sprintf(CFG.logfile, "system.log");
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sprintf(CFG.error_log, "error.log");
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sprintf(CFG.default_menu, "main.mnu");
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sprintf(CFG.current_language, "english.lang");
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sprintf(CFG.chat_log, "chat.log");
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sprintf(CFG.welcome_logo, "logo.asc");
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/*
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* Fill Global defaults
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*/
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sprintf(CFG.bbs_menus, "%s/english/menus", getenv("MBSE_ROOT"));
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sprintf(CFG.bbs_txtfiles, "%s/english/txtfiles", getenv("MBSE_ROOT"));
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sprintf(CFG.bbs_usersdir, "%s/home", getenv("MBSE_ROOT"));
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sprintf(CFG.nodelists, "/var/spool/mbse/nodelist");
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sprintf(CFG.inbound, "/var/spool/mbse/unknown");
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sprintf(CFG.pinbound, "/var/spool/mbse/inbound");
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sprintf(CFG.outbound, "/var/spool/mbse/outbound");
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sprintf(CFG.msgs_path, "/var/spool/mbse/msgs");
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sprintf(CFG.dospath, "a:"); /* The biggest floppy on earth, JvdW. */
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sprintf(CFG.uxpath, "/var/spool/mbse");
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sprintf(CFG.badtic, "/var/spool/mbse/badtic");
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sprintf(CFG.ticout, "/var/spool/mbse/ticqueue");
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sprintf(CFG.req_magic, "%s/magic", getenv("MBSE_ROOT"));
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/*
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* Newfiles reports
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*/
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sprintf(CFG.ftp_base, "/var/spool/mbse/ftp");
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CFG.newdays = 30;
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CFG.security.level = 20;
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CFG.new_split = 27;
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CFG.new_force = 30;
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/*
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* BBS Globals
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*/
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CFG.CityLen = 6;
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CFG.max_login = 5;
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CFG.exclude_sysop = TRUE;
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CFG.iConnectString = FALSE;
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CFG.iAskFileProtocols = FALSE;
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CFG.sysop_access = 32000;
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CFG.password_length = 4;
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CFG.iPasswd_Char = '.';
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CFG.idleout = 3;
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CFG.iQuota = 10;
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CFG.iCRLoginCount = 10;
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CFG.bbs_loglevel = DLOG_ALLWAYS | DLOG_ERROR | DLOG_ATTENT | DLOG_NORMAL | DLOG_VERBOSE;
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CFG.util_loglevel = DLOG_ALLWAYS | DLOG_ERROR | DLOG_ATTENT | DLOG_NORMAL | DLOG_VERBOSE;
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CFG.OLR_NewFileLimit = 30;
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CFG.OLR_MaxReq = 25;
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CFG.slow_util = TRUE;
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CFG.iCrashLevel = 100;
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CFG.iAttachLevel = 100;
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CFG.new_groups = 25;
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CFG.slow_util = TRUE;
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CFG.iCrashLevel = 100;
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CFG.iAttachLevel = 100;
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CFG.new_groups = 25;
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sprintf(CFG.startname, "bbs");
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CFG.freespace = 10;
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/*
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* New Users
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*/
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CFG.newuser_access.level = 5;
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CFG.iCapUserName = TRUE;
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CFG.iAnsi = TRUE;
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CFG.iDataPhone = TRUE;
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CFG.iVoicePhone = TRUE;
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CFG.iDOB = TRUE;
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CFG.iTelephoneScan = TRUE;
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CFG.iLocation = TRUE;
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CFG.iHotkeys = TRUE;
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CFG.iCapLocation = FALSE;
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CFG.AskAddress = FALSE;
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CFG.GiveEmail = TRUE;
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/*
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* Colors
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*/
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CFG.TextColourF = 3;
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CFG.TextColourB = 0;
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CFG.UnderlineColourF = 14;
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CFG.UnderlineColourB = 0;
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CFG.InputColourF = 11;
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CFG.InputColourB = 0;
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CFG.CRColourF = 15;
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CFG.CRColourB = 0;
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CFG.MoreF = 13;
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CFG.MoreB = 0;
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CFG.HiliteF = 15;
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CFG.HiliteB = 0;
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CFG.FilenameF = 14;
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CFG.FilenameB = 0;
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CFG.FilesizeF = 13;
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CFG.FilesizeB = 0;
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CFG.FiledateF = 10;
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CFG.FiledateB = 0;
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CFG.FiledescF = 3;
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CFG.FiledescB = 0;
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CFG.MsgInputColourF = 3;
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CFG.MsgInputColourB = 0;
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/*
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* NextUser Door
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*/
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sprintf(CFG.sNuScreen, "welcome");
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sprintf(CFG.sNuQuote, "Please press [ENTER] to continue: ");
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/*
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* Safe Door
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*/
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CFG.iSafeFirstDigit = 1;
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CFG.iSafeSecondDigit = 2;
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CFG.iSafeThirdDigit = 3;
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CFG.iSafeMaxTrys = 4;
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CFG.iSafeMaxNumber = 20;
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CFG.iSafeNumGen = FALSE;
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strcpy(CFG.sSafePrize, "Free access for a year!");
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sprintf(CFG.sSafeWelcome, "safewel");
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sprintf(CFG.sSafeOpened, "safeopen");
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/*
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* Paging
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*/
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CFG.iPageLength = 30;
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CFG.iMaxPageTimes = 5;
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CFG.iAskReason = TRUE;
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CFG.iSysopArea = 1;
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CFG.iExternalChat = FALSE;
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strcpy(CFG.sExternalChat, "/usr/local/bin/chat");
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CFG.iAutoLog = TRUE;
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strcpy(CFG.sChatDevice, "/dev/tty01");
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CFG.iChatPromptChk = TRUE;
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CFG.iStopChatTime = TRUE;
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for (i = 0; i < 7; i++) {
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sprintf(CFG.cStartTime[i], "18:00");
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sprintf(CFG.cStopTime[i], "23:59");
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}
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/*
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* Time Bank
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*/
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CFG.iMaxTimeBalance = 200;
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CFG.iMaxTimeWithdraw = 100;
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CFG.iMaxTimeDeposit = 60;
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CFG.iMaxByteBalance = 500;
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CFG.iMaxByteWithdraw = 300;
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CFG.iMaxByteDeposit = 150;
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strcpy(CFG.sTimeRatio, "3:1");
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strcpy(CFG.sByteRatio, "3:1");
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/*
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* Fill ticconf defaults
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*/
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CFG.ct_ResFuture = TRUE;
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CFG.ct_ReplExt = TRUE;
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CFG.ct_PlusAll = TRUE;
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CFG.ct_Notify = TRUE;
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CFG.ct_Message = TRUE;
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CFG.ct_TIC = TRUE;
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CFG.tic_days = 30;
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sprintf(CFG.hatchpasswd, "DizIzMyBIGseeKret");
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CFG.drspace = 2048;
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CFG.tic_systems = 10;
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CFG.tic_groups = 25;
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CFG.tic_dupes = 16000;
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/*
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* Fill Mail defaults
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*/
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CFG.maxpktsize = 150;
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CFG.maxarcsize = 300;
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sprintf(CFG.badboard, "/var/spool/mbse/mail/badmail");
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sprintf(CFG.dupboard, "/var/spool/mbse/mail/dupmail");
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sprintf(CFG.popnode, "localhost");
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sprintf(CFG.smtpnode, "localhost");
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sprintf(CFG.nntpnode, "localhost");
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CFG.toss_days = 30;
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CFG.toss_dupes = 16000;
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CFG.toss_old = 60;
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CFG.defmsgs = 500;
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CFG.defdays = 90;
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CFG.toss_systems = 10;
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CFG.toss_groups = 25;
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CFG.UUCPgate.zone = 2;
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CFG.UUCPgate.net = 292;
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CFG.UUCPgate.node = 875;
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sprintf(CFG.UUCPgate.domain, "fidonet");
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CFG.nntpdupes = 16000;
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for (i = 0; i < 32; i++)
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sprintf(CFG.fname[i], "Flag %d", i+1);
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/*
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* Fido mailer defaults
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*/
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CFG.timeoutreset = 3L;
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CFG.timeoutconnect = 60L;
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sprintf(CFG.phonetrans[0].match, "31-255");
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sprintf(CFG.phonetrans[1].match, "31-");
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sprintf(CFG.phonetrans[1].repl, "0");
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sprintf(CFG.phonetrans[2].repl, "00");
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CFG.Speed = 9600;
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CFG.dialdelay = 60;
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sprintf(CFG.Flags, "CM,XX,IBN,IFC,ITN");
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CFG.cico_loglevel = DLOG_ALLWAYS | DLOG_ERROR | DLOG_ATTENT | DLOG_NORMAL | DLOG_VERBOSE;
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/*
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* FTP Server
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*/
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CFG.ftp_limit = 20;
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CFG.ftp_loginfails = 2;
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CFG.ftp_compress = TRUE;
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CFG.ftp_tar = TRUE;
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CFG.ftp_log_cmds = TRUE;
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CFG.ftp_anonymousok = TRUE;
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CFG.ftp_mbseok = FALSE;
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sprintf(CFG.ftp_readme_login, "README*");
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sprintf(CFG.ftp_readme_cwd, "README*");
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sprintf(CFG.ftp_msg_login, "/welcome.msg");
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sprintf(CFG.ftp_msg_cwd, ".message");
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sprintf(CFG.ftp_msg_shutmsg, "/etc/nologin");
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sprintf(CFG.ftp_upl_path, "%s/incoming", CFG.ftp_base);
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sprintf(CFG.ftp_banner, "%s/etc/ftpbanner", getenv("MBSE_ROOT"));
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sprintf(CFG.ftp_email, "sysop@%s", CFG.sysdomain);
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sprintf(CFG.ftp_pth_filter, "^[-A-Za-z0-9_\\.]*$ ^\\. ^-");
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sprintf(CFG.ftp_pth_message, "%s/etc/pathmsg", getenv("MBSE_ROOT"));
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/*
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* WWW defaults
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*/
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sprintf(CFG.www_root, "/var/lib/apache/htdocs");
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sprintf(CFG.www_link2ftp, "files");
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sprintf(CFG.www_url, "http://%s", CFG.sysdomain);
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sprintf(CFG.www_charset, "ISO 8859-1");
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sprintf(CFG.www_tbgcolor, "Silver");
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sprintf(CFG.www_hbgcolor, "Aqua");
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sprintf(CFG.www_author, "Your Name");
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sprintf(CFG.www_convert,"/usr/X11R6/bin/convert -geometry x100");
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sprintf(CFG.www_icon_home, "up.gif");
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sprintf(CFG.www_name_home, "Home");
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sprintf(CFG.www_icon_back, "back.gif");
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sprintf(CFG.www_name_back, "Back");
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sprintf(CFG.www_icon_prev, "left.gif");
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sprintf(CFG.www_name_prev, "Previous page");
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sprintf(CFG.www_icon_next, "right.gif");
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sprintf(CFG.www_name_next, "Next page");
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CFG.www_files_page = 10;
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if ((fp = fopen(cfgfn, "a+")) == NULL) {
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perror("");
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fprintf(stderr, "Can't create %s\n", cfgfn);
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exit(2);
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}
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fwrite(&CFG, sizeof(CFG), 1, fp);
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fclose(fp);
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chmod(cfgfn, 0640);
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} else {
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fread(&CFG, sizeof(CFG), 1, fp);
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fclose(fp);
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}
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cfg_time = file_time(cfgfn);
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}
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/*
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* Load task configuration data.
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*/
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void load_taskcfg(void)
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{
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FILE *fp;
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if ((fp = fopen(tcfgfn, "r")) == NULL) {
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memset(&TCFG, 0, sizeof(TCFG));
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TCFG.maxload = 1.50;
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sprintf(TCFG.zmh_start, "02:30");
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sprintf(TCFG.zmh_end, "03:30");
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sprintf(TCFG.cmd_mailout, "%s/bin/mbfido scan web -quiet", getenv("MBSE_ROOT"));
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sprintf(TCFG.cmd_mailin, "%s/bin/mbfido tic toss web -quiet", getenv("MBSE_ROOT"));
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sprintf(TCFG.cmd_newnews, "%s/bin/mbfido news web -quiet", getenv("MBSE_ROOT"));
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sprintf(TCFG.cmd_mbindex1, "%s/bin/mbindex -quiet", getenv("MBSE_ROOT"));
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sprintf(TCFG.cmd_mbindex2, "%s/bin/goldnode -f -q", getenv("MBSE_ROOT"));
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sprintf(TCFG.cmd_msglink, "%s/bin/mbmsg link -quiet", getenv("MBSE_ROOT"));
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sprintf(TCFG.cmd_reqindex, "%s/bin/mbfile index -quiet", getenv("MBSE_ROOT"));
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TCFG.ipblocks = TRUE;
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TCFG.debug = FALSE;
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TCFG.max_pots = 1;
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TCFG.max_isdn = 0;
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TCFG.max_tcp = 0;
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if ((fp = fopen(tcfgfn, "a+")) == NULL) {
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tasklog('?', "$Can't create %s", tcfgfn);
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die(2);
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}
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fwrite(&TCFG, sizeof(TCFG), 1, fp);
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fclose(fp);
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chmod(tcfgfn, 0640);
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tasklog('+', "Created new %s", tcfgfn);
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} else {
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fread(&TCFG, sizeof(TCFG), 1, fp);
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fclose(fp);
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}
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tcfg_time = file_time(tcfgfn);
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}
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/*
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* Launch an external program in the background.
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* On success add it to the tasklist and return
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* the pid.
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*/
|
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pid_t launch(char *cmd, char *opts, char *name, int tasktype)
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{
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char buf[PATH_MAX];
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char *vector[16];
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int i, rc = 0;
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pid_t pid = 0;
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if (checktasks(0) >= MAXTASKS) {
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tasklog('?', "Launch: can't execute %s, maximum tasks reached", cmd);
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return 0;
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}
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if (opts == NULL)
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sprintf(buf, "%s", cmd);
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else
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sprintf(buf, "%s %s", cmd, opts);
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i = 0;
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|
vector[i++] = strtok(buf," \t\n\0");
|
|
while ((vector[i++] = strtok(NULL," \t\n")) && (i<16));
|
|
vector[15] = NULL;
|
|
|
|
if (file_exist(vector[0], X_OK)) {
|
|
tasklog('?', "Launch: can't execute %s, command not found", vector[0]);
|
|
return 0;
|
|
}
|
|
|
|
pid = fork();
|
|
switch (pid) {
|
|
case -1:
|
|
tasklog('?', "$Launch: error, can't fork grandchild");
|
|
return 0;
|
|
case 0:
|
|
/* From Paul Vixies cron: */
|
|
(void)setsid(); /* It doesn't seem to help */
|
|
close(0);
|
|
if (open("/dev/null", O_RDONLY) != 0) {
|
|
tasklog('?', "$Launch: \"%s\": reopen of stdin to /dev/null failed", buf);
|
|
_exit(-1);
|
|
}
|
|
close(1);
|
|
if (open("/dev/null", O_WRONLY | O_APPEND | O_CREAT,0600) != 1) {
|
|
tasklog('?', "$Launch: \"%s\": reopen of stdout to /dev/null failed", buf);
|
|
_exit(-1);
|
|
}
|
|
close(2);
|
|
if (open("/dev/null", O_WRONLY | O_APPEND | O_CREAT,0600) != 2) {
|
|
tasklog('?', "$Launch: \"%s\": reopen of stderr to /dev/null failed", buf);
|
|
_exit(-1);
|
|
}
|
|
errno = 0;
|
|
rc = execv(vector[0],vector);
|
|
tasklog('?', "$Launch: execv \"%s\" failed, returned %d", cmd, rc);
|
|
_exit(-1);
|
|
default:
|
|
/* grandchild's daddy's process */
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Add it to the tasklist.
|
|
*/
|
|
for (i = 0; i < MAXTASKS; i++) {
|
|
if (strlen(task[i].name) == 0) {
|
|
strcpy(task[i].name, name);
|
|
strcpy(task[i].cmd, cmd);
|
|
if (opts)
|
|
strcpy(task[i].opts, opts);
|
|
task[i].pid = pid;
|
|
task[i].status = 0;
|
|
task[i].running = TRUE;
|
|
task[i].rc = 0;
|
|
task[i].tasktype = tasktype;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (opts)
|
|
tasklog('+', "Launch: task %d \"%s %s\" success, pid=%d", i, cmd, opts, pid);
|
|
else
|
|
tasklog('+', "Launch: task %d \"%s\" success, pid=%d", i, cmd, pid);
|
|
return pid;
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* Count specific running tasks
|
|
*/
|
|
int runtasktype(int tasktype)
|
|
{
|
|
int i, count = 0;
|
|
|
|
for (i = 0; i < MAXTASKS; i++) {
|
|
if (strlen(task[i].name) && task[i].running && (task[i].tasktype == tasktype))
|
|
count++;
|
|
}
|
|
return count;
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* Check all running tasks registered in the tasklist.
|
|
* Report programs that are stopped. If signal is set
|
|
* then send that signal.
|
|
*/
|
|
int checktasks(int onsig)
|
|
{
|
|
int i, j, rc, count = 0, first = TRUE, status, do_outstat = FALSE;
|
|
|
|
for (i = 0; i < MAXTASKS; i++) {
|
|
if (strlen(task[i].name)) {
|
|
|
|
if (onsig) {
|
|
if (kill(task[i].pid, onsig) == 0)
|
|
tasklog('+', "%s to %s (pid %d) succeeded", SigName[onsig], task[i].name, task[i].pid);
|
|
else
|
|
tasklog('+', "%s to %s (pid %d) failed", SigName[onsig], task[i].name, task[i].pid);
|
|
}
|
|
|
|
task[i].rc = wait4(task[i].pid, &status, WNOHANG | WUNTRACED, NULL);
|
|
if (task[i].rc) {
|
|
task[i].running = FALSE;
|
|
if (task[i].tasktype == CALL_POTS || task[i].tasktype == CALL_ISDN || task[i].tasktype == CALL_IP)
|
|
do_outstat = TRUE;
|
|
}
|
|
|
|
if (first && task[i].rc) {
|
|
first = FALSE;
|
|
tasklog('t', "Task T pid stat status rc status");
|
|
tasklog('t', "---------------- - ----- ---- ----------- ----- --------");
|
|
for (j = 0; j < MAXTASKS; j++)
|
|
if (strlen(task[j].name))
|
|
tasklog('t', "%-16s %d %5d %s %-11d %5d %08x", task[j].name,
|
|
task[j].tasktype, task[j].pid, task[j].running?"runs":"stop",
|
|
task[j].status, task[j].rc, task[j].status);
|
|
}
|
|
|
|
switch (task[i].rc) {
|
|
case -1:
|
|
if (errno == ECHILD)
|
|
tasklog('+', "Task %d \"%s\" is ready", i, task[i].name);
|
|
else
|
|
tasklog('+', "Task %d \"%s\" is ready, error: %s", i, task[i].name, strerror(errno));
|
|
break;
|
|
case 0:
|
|
/*
|
|
* Update last known status when running.
|
|
*/
|
|
task[i].status = status;
|
|
count++;
|
|
break;
|
|
default:
|
|
tasklog('+', "errno=%d %s", errno, strerror(errno));
|
|
if (WIFEXITED(task[i].status)) {
|
|
rc = WEXITSTATUS(task[i].status);
|
|
if (rc)
|
|
tasklog('+', "Task %s is ready, error=%d", task[i].name, rc);
|
|
else
|
|
tasklog('+', "Task %s is ready", task[i].name);
|
|
} else if (WIFSIGNALED(task[i].status)) {
|
|
rc = WTERMSIG(task[i].status);
|
|
if (rc <= 31)
|
|
tasklog('+', "Task %s terminated on signal %s (%d)", task[i].name, SigName[rc], rc);
|
|
else
|
|
tasklog('+', "Task %s terminated with error nr %d", task[i].name, rc);
|
|
} else if (WIFSTOPPED(task[i].status)) {
|
|
rc = WSTOPSIG(task[i].status);
|
|
tasklog('+', "Task %s stopped on signal %s (%d)", task[i].name, SigName[rc], rc);
|
|
} else {
|
|
tasklog('+', "FIXME: 1");
|
|
}
|
|
break;
|
|
}
|
|
|
|
if (!task[i].running)
|
|
memset(&task[i], 0, sizeof(onetask));
|
|
}
|
|
}
|
|
|
|
if (do_outstat)
|
|
outstat();
|
|
|
|
return count;
|
|
}
|
|
|
|
|
|
|
|
void die(int onsig)
|
|
{
|
|
int i, count;
|
|
|
|
signal(onsig, SIG_IGN);
|
|
tasklog('+', "Shutting down on signal %s", SigName[onsig]);
|
|
|
|
/*
|
|
* First check if there are tasks running, if so try to stop them
|
|
*/
|
|
if ((count = checktasks(0))) {
|
|
tasklog('+', "There are %d tasks running, sending SIGTERM", count);
|
|
checktasks(SIGTERM);
|
|
for (i = 0; i < 15; i++) {
|
|
sleep(1);
|
|
count = checktasks(0);
|
|
if (count == 0)
|
|
break;
|
|
}
|
|
if (count) {
|
|
/*
|
|
* There are some diehards running...
|
|
*/
|
|
tasklog('+', "There are %d tasks running, sending SIGKILL", count);
|
|
count = checktasks(SIGKILL);
|
|
}
|
|
if (count) {
|
|
sleep(1);
|
|
count = checktasks(0);
|
|
if (count)
|
|
tasklog('?', "Still %d tasks running, giving up", count);
|
|
}
|
|
}
|
|
|
|
ulocktask();
|
|
if (sock != -1)
|
|
close(sock);
|
|
if (ping_isocket != -1)
|
|
close(ping_isocket);
|
|
if (!file_exist(spath, R_OK)) {
|
|
unlink(spath);
|
|
}
|
|
tasklog(' ', "MBTASK finished");
|
|
exit(onsig);
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* Put a lock on this program.
|
|
*/
|
|
int locktask(char *root)
|
|
{
|
|
char Tmpfile[81];
|
|
FILE *fp;
|
|
pid_t oldpid;
|
|
|
|
sprintf(Tmpfile, "%s/var/", root);
|
|
strcpy(lockfile, Tmpfile);
|
|
sprintf(Tmpfile + strlen(Tmpfile), "%s%u", TMPNAME, getpid());
|
|
sprintf(lockfile + strlen(lockfile), "%s", LCKNAME);
|
|
|
|
if ((fp = fopen(Tmpfile, "w")) == NULL) {
|
|
perror("mbtask");
|
|
printf("Can't create lockfile \"%s\"\n", Tmpfile);
|
|
return 1;
|
|
}
|
|
fprintf(fp, "%10u\n", getpid());
|
|
fclose(fp);
|
|
|
|
while (TRUE) {
|
|
if (link(Tmpfile, lockfile) == 0) {
|
|
unlink(Tmpfile);
|
|
return 0;
|
|
}
|
|
if ((fp = fopen(lockfile, "r")) == NULL) {
|
|
perror("mbtask");
|
|
printf("Can't open lockfile \"%s\"\n", Tmpfile);
|
|
unlink(Tmpfile);
|
|
return 1;
|
|
}
|
|
if (fscanf(fp, "%u", &oldpid) != 1) {
|
|
perror("mbtask");
|
|
printf("Can't read old pid from \"%s\"\n", Tmpfile);
|
|
fclose(fp);
|
|
unlink(Tmpfile);
|
|
return 1;
|
|
}
|
|
fclose(fp);
|
|
if (kill(oldpid,0) == -1) {
|
|
if (errno == ESRCH) {
|
|
printf("Stale lock found for pid %u\n", oldpid);
|
|
unlink(lockfile);
|
|
/* no return, try lock again */
|
|
} else {
|
|
perror("mbtask");
|
|
printf("Kill for %u failed\n",oldpid);
|
|
unlink(Tmpfile);
|
|
return 1;
|
|
}
|
|
} else {
|
|
printf("Another mbtask is already running, pid=%u\n", oldpid);
|
|
unlink(Tmpfile);
|
|
return 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
|
|
void ulocktask(void)
|
|
{
|
|
if (lockfile)
|
|
(void)unlink(lockfile);
|
|
}
|
|
|
|
|
|
/* different names, same thing... be careful, as these are macros... */
|
|
#ifdef __FreeBSD__
|
|
# define icmphdr icmp
|
|
# define iphdr ip
|
|
# define ip_saddr ip_src.s_addr
|
|
# define ip_daddr ip_dst.s_addr
|
|
#else
|
|
# define ip_saddr saddr
|
|
# define ip_daddr daddr
|
|
# define ip_hl ihl
|
|
# define ip_p protocol
|
|
#endif
|
|
|
|
|
|
#ifdef __linux__
|
|
# define icmp_type type
|
|
# define icmp_code code
|
|
# define icmp_cksum checksum
|
|
# ifdef icmp_id
|
|
# undef icmp_id
|
|
# endif
|
|
# define icmp_id un.echo.id
|
|
# ifdef icmp_seq
|
|
# undef icmp_seq
|
|
# endif
|
|
# define icmp_seq un.echo.sequence
|
|
#endif
|
|
|
|
#ifdef __FreeBSD__
|
|
# define ICMP_DEST_UNREACH ICMP_UNREACH
|
|
# define ICMP_TIME_EXCEEDED ICMP_TIMXCEED
|
|
#endif
|
|
|
|
#define ICMP_BASEHDR_LEN 8
|
|
#define ICMP4_ECHO_LEN ICMP_BASEHDR_LEN
|
|
|
|
|
|
|
|
/*
|
|
* Takes a packet as send out and a recieved ICMP packet and looks whether the ICMP packet is
|
|
* an error reply on the sent-out one. packet is only the packet (without IP header).
|
|
* errmsg includes an IP header.
|
|
* to is the destination address of the original packet (the only thing that is actually
|
|
* compared of the IP header). The RFC sais that we get at least 8 bytes of the offending packet.
|
|
* We do not compare more, as this is all we need.
|
|
*/
|
|
static int icmp4_errcmp(char *packet, int plen, struct in_addr *to, char *errmsg, int elen, int errtype)
|
|
{
|
|
struct iphdr iph;
|
|
struct icmphdr icmph;
|
|
struct iphdr eiph;
|
|
char *data;
|
|
|
|
/* XXX: lots of memcpy to avoid unaligned accesses on alpha */
|
|
if (elen < sizeof(struct iphdr))
|
|
return 0;
|
|
memcpy(&iph, errmsg, sizeof(iph));
|
|
if (iph.ip_p != IPPROTO_ICMP || elen < iph.ip_hl * 4 + ICMP_BASEHDR_LEN + sizeof(eiph))
|
|
return 0;
|
|
memcpy(&icmph, errmsg + iph.ip_hl * 4, ICMP_BASEHDR_LEN);
|
|
memcpy(&eiph, errmsg + iph.ip_hl * 4 + ICMP_BASEHDR_LEN, sizeof(eiph));
|
|
if (elen < iph.ip_hl * 4 + ICMP_BASEHDR_LEN + eiph.ip_hl * 4 + 8)
|
|
return 0;
|
|
data = errmsg + iph.ip_hl * 4 + ICMP_BASEHDR_LEN + eiph.ip_hl * 4;
|
|
return icmph.icmp_type == errtype && memcmp(&to->s_addr, &eiph.ip_daddr, sizeof(to->s_addr)) == 0 &&
|
|
memcmp(data, packet, plen < 8 ?plen:8) == 0;
|
|
}
|
|
|
|
|
|
|
|
unsigned short get_rand16(void)
|
|
{
|
|
return random()&0xffff;
|
|
}
|
|
|
|
|
|
short p_sequence = 0;
|
|
unsigned short id;
|
|
struct icmphdr icmpd;
|
|
struct sockaddr_in to;
|
|
|
|
/*
|
|
* IPv4/ICMPv4 ping. Called from ping (see below)
|
|
*/
|
|
int ping_send(struct in_addr addr)
|
|
{
|
|
int len;
|
|
int isock;
|
|
#ifdef __linux__
|
|
struct icmp_filter f;
|
|
#else
|
|
struct protoent *pe;
|
|
int SOL_IP;
|
|
#endif
|
|
unsigned long sum;
|
|
unsigned short *ptr;
|
|
|
|
#ifndef __linux__
|
|
if (!(pe = getprotobyname("ip"))) {
|
|
tasklog('?', "icmp ping: getprotobyname() failed: %s", strerror(errno));
|
|
return -1;
|
|
}
|
|
SOL_IP = pe->p_proto;
|
|
#endif
|
|
|
|
isock = ping_isocket;
|
|
p_sequence = 1;
|
|
id = (unsigned short)get_rand16(); /* randomize a ping id */
|
|
|
|
#ifdef __linux__
|
|
/* Fancy ICMP filering -- only on Linux (as far is I know) */
|
|
|
|
/* In fact, there should be macros for treating icmp_filter, but I haven't found them in Linux 2.2.15.
|
|
* So, set it manually and unportable ;-) */
|
|
/* This filter lets ECHO_REPLY (0), DEST_UNREACH(3) and TIME_EXCEEDED(11) pass. */
|
|
/* !(0000 1000 0000 1001) = 0xff ff f7 f6 */
|
|
f.data=0xfffff7f6;
|
|
if (setsockopt(isock, SOL_RAW, ICMP_FILTER, &f, sizeof(f)) == -1) {
|
|
if (icmp_errs < ICMP_MAX_ERRS)
|
|
tasklog('?', "$icmp ping: setsockopt() failed %d", isock);
|
|
return -1;
|
|
}
|
|
#endif
|
|
|
|
icmpd.icmp_type = ICMP_ECHO;
|
|
icmpd.icmp_code = 0;
|
|
icmpd.icmp_cksum = 0;
|
|
icmpd.icmp_id = htons((short)id);
|
|
icmpd.icmp_seq = htons(p_sequence);
|
|
|
|
/* Checksumming - Algorithm taken from nmap. Thanks... */
|
|
|
|
ptr = (unsigned short *)&icmpd;
|
|
sum = 0;
|
|
|
|
for (len = 0; len < 4; len++) {
|
|
sum += *ptr++;
|
|
}
|
|
sum = (sum >> 16) + (sum & 0xffff);
|
|
sum += (sum >> 16);
|
|
icmpd.icmp_cksum = ~sum;
|
|
|
|
memset(&to, 0, sizeof(to));
|
|
to.sin_family = AF_INET;
|
|
to.sin_port = 0;
|
|
to.sin_addr = addr;
|
|
SET_SOCKA_LEN4(to);
|
|
if (sendto(isock, &icmpd, ICMP4_ECHO_LEN, 0, (struct sockaddr *)&to, sizeof(to)) == -1) {
|
|
if (icmp_errs < ICMP_MAX_ERRS)
|
|
tasklog('?', "$icmp ping: sendto()");
|
|
return -2;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
int ping_receive(struct in_addr addr)
|
|
{
|
|
char buf[1024];
|
|
int isock;
|
|
int len;
|
|
struct sockaddr_in ffrom;
|
|
struct icmphdr icmpp;
|
|
struct iphdr iph;
|
|
socklen_t sl;
|
|
struct pollfd pfd;
|
|
|
|
isock = ping_isocket;
|
|
|
|
pfd.fd = isock;
|
|
pfd.events = POLLIN;
|
|
/*
|
|
* 10 mSec is enough, this function is called at regular intervals.
|
|
*/
|
|
if (poll(&pfd, 1, 10) < 0) {
|
|
if (icmp_errs < ICMP_MAX_ERRS)
|
|
tasklog('?', "$poll/select failed");
|
|
return -3;
|
|
}
|
|
|
|
if (pfd.revents & POLLIN || pfd.revents & POLLERR || pfd.revents & POLLHUP || pfd.revents & POLLNVAL) {
|
|
sl = sizeof(ffrom);
|
|
if ((len = recvfrom(isock, &buf, sizeof(buf), 0,(struct sockaddr *)&ffrom, &sl)) != -1) {
|
|
if (len > sizeof(struct iphdr)) {
|
|
memcpy(&iph, buf, sizeof(iph));
|
|
if (len - iph.ip_hl * 4 >= ICMP_BASEHDR_LEN) {
|
|
memcpy(&icmpp, ((unsigned long int *)buf)+iph.ip_hl, sizeof(icmpp));
|
|
if (iph.ip_saddr == addr.s_addr &&
|
|
icmpp.icmp_type == ICMP_ECHOREPLY &&
|
|
ntohs(icmpp.icmp_id) == id &&
|
|
ntohs(icmpp.icmp_seq) <= p_sequence) {
|
|
return 0;
|
|
} else {
|
|
/* No regular echo reply. Maybe an error? */
|
|
if (icmp4_errcmp((char *)&icmpd, ICMP4_ECHO_LEN,
|
|
&to.sin_addr, buf, len, ICMP_DEST_UNREACH) ||
|
|
icmp4_errcmp((char *)&icmpd, ICMP4_ECHO_LEN,
|
|
&to.sin_addr, buf, len, ICMP_TIME_EXCEEDED)) {
|
|
return -4;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
return -5; /* error */
|
|
}
|
|
}
|
|
return -6; /* no answer */
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* External Semafore Checks
|
|
*/
|
|
void test_sema(char *);
|
|
void test_sema(char *sema)
|
|
{
|
|
if (IsSema(sema)) {
|
|
RemoveSema(sema);
|
|
tasklog('s', "Semafore %s detected", sema);
|
|
sem_set(sema, TRUE);
|
|
}
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* Check semafore's, system status flags etc. This is called
|
|
* each second to test for condition changes.
|
|
*/
|
|
void check_sema(void);
|
|
void check_sema(void)
|
|
{
|
|
/*
|
|
* Check UPS status.
|
|
*/
|
|
if (IsSema((char *)"upsalarm")) {
|
|
if (!UPSalarm)
|
|
tasklog('!', "UPS: power failure");
|
|
UPSalarm = TRUE;
|
|
} else {
|
|
if (UPSalarm)
|
|
tasklog('!', "UPS: the power is back");
|
|
UPSalarm = FALSE;
|
|
}
|
|
if (IsSema((char *)"upsdown")) {
|
|
tasklog('!', "UPS: power failure, starting shutdown");
|
|
/*
|
|
* Since the upsdown semafore is permanent, the system WILL go down
|
|
* there is no point for this program to stay. Signal all tasks and stop.
|
|
*/
|
|
die(SIGTERM);
|
|
}
|
|
|
|
/*
|
|
* Check Zone Mail Hour
|
|
*/
|
|
get_zmh();
|
|
|
|
/*
|
|
* Semafore's that still can be detected, usefull for
|
|
* external programs that create them.
|
|
*/
|
|
test_sema((char *)"newnews");
|
|
test_sema((char *)"mailout");
|
|
test_sema((char *)"mailin");
|
|
test_sema((char *)"scanout");
|
|
}
|
|
|
|
|
|
|
|
void scheduler(void)
|
|
{
|
|
struct passwd *pw;
|
|
int running = 0, rc, rlen;
|
|
int LOADhi = FALSE, oldmin = 70, olddo = 70;
|
|
char *cmd = NULL;
|
|
static char doing[32], buf[2048];
|
|
time_t now;
|
|
struct tm *tm;
|
|
FILE *fp;
|
|
float lavg1, lavg2, lavg3;
|
|
struct pollfd pfd;
|
|
struct in_addr paddr;
|
|
|
|
InitFidonet();
|
|
|
|
/*
|
|
* Registrate this server for mbmon in slot 0.
|
|
*/
|
|
reginfo[0].pid = getpid();
|
|
sprintf(reginfo[0].tty, "-");
|
|
sprintf(reginfo[0].uname, "mbse");
|
|
sprintf(reginfo[0].prg, "mbtask");
|
|
sprintf(reginfo[0].city, "localhost");
|
|
sprintf(reginfo[0].doing, "Start");
|
|
reginfo[0].started = time(NULL);
|
|
|
|
Processing = TRUE;
|
|
TouchSema((char *)"mbtask.last");
|
|
pw = getpwuid(getuid());
|
|
|
|
/*
|
|
* Setup UNIX Datagram socket
|
|
*/
|
|
if ((sock = socket(AF_UNIX, SOCK_DGRAM, 0)) < 0) {
|
|
tasklog('?', "$Can't create socket");
|
|
die(1);
|
|
}
|
|
|
|
memset(&servaddr, 0, sizeof(servaddr));
|
|
servaddr.sun_family = AF_UNIX;
|
|
strcpy(servaddr.sun_path, spath);
|
|
|
|
if (bind(sock, &servaddr, sizeof(servaddr)) < 0) {
|
|
close(sock);
|
|
sock = -1;
|
|
tasklog('?', "$Can't bind socket %s", spath);
|
|
die(1);
|
|
}
|
|
|
|
pingresult[1] = TRUE;
|
|
pingresult[2] = TRUE;
|
|
|
|
/*
|
|
* The flag masterinit is set if a new config.data is created, this
|
|
* is true if mbtask is started the very first time. Then we run
|
|
* mbsetup init to create the default databases.
|
|
*/
|
|
if (masterinit) {
|
|
cmd = xstrcpy(pw->pw_dir);
|
|
cmd = xstrcat(cmd, (char *)"/bin/mbsetup");
|
|
launch(cmd, (char *)"init", (char *)"mbsetup", MBINIT);
|
|
free(cmd);
|
|
sleep(2);
|
|
masterinit = FALSE;
|
|
}
|
|
|
|
initnl();
|
|
sem_set((char *)"scanout", TRUE);
|
|
|
|
do {
|
|
/*
|
|
* Poll UNIX Datagram socket until the defined timeout.
|
|
*/
|
|
pfd.fd = sock;
|
|
pfd.events = POLLIN | POLLPRI;
|
|
pfd.revents = 0;
|
|
rc = poll(&pfd, 1, 1000);
|
|
if (rc == -1) {
|
|
/*
|
|
* Poll can be interrupted by a finished child so that's not a real error.
|
|
*/
|
|
if (errno != EINTR) {
|
|
tasklog('?', "$poll() rc=%d sock=%d, events=%04x", rc, sock, pfd.revents);
|
|
}
|
|
} else if (rc) {
|
|
if (pfd.revents & POLLIN) {
|
|
memset(&buf, 0, sizeof(buf));
|
|
fromlen = sizeof(from);
|
|
rlen = recvfrom(sock, buf, sizeof(buf) -1, 0, &from, &fromlen);
|
|
do_cmd(buf);
|
|
} else {
|
|
tasklog('-', "Return poll rc=%d, events=%04x", rc, pfd.revents);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Check all registered connections and semafore's
|
|
*/
|
|
reg_check();
|
|
check_sema();
|
|
|
|
/*
|
|
* Check the systems load average.
|
|
*/
|
|
if ((fp = fopen((char *)"/proc/loadavg", "r"))) {
|
|
if (fscanf(fp, "%f %f %f", &lavg1, &lavg2, &lavg3) == 3) {
|
|
Load = lavg1;
|
|
if (lavg1 >= TCFG.maxload) {
|
|
if (!LOADhi) {
|
|
tasklog('!', "System load too high: %2.2f (%2.2f)", lavg1, TCFG.maxload);
|
|
LOADhi = TRUE;
|
|
}
|
|
} else {
|
|
if (LOADhi) {
|
|
tasklog('!', "System load normal: %2.2f (%2.2f)", lavg1, TCFG.maxload);
|
|
LOADhi = FALSE;
|
|
}
|
|
}
|
|
}
|
|
fclose(fp);
|
|
}
|
|
|
|
/*
|
|
* Report to the system monitor.
|
|
*/
|
|
memset(&doing, 0, sizeof(doing));
|
|
if ((running = checktasks(0)))
|
|
sprintf(doing, "Run %d tasks", running);
|
|
else if (UPSalarm)
|
|
sprintf(doing, "UPS alarm");
|
|
else if (!s_bbsopen)
|
|
sprintf(doing, "BBS is closed");
|
|
else if (Processing)
|
|
sprintf(doing, "Waiting (%d)", oldmin);
|
|
else
|
|
sprintf(doing, "Overload %2.2f", lavg1);
|
|
|
|
sprintf(reginfo[0].doing, "%s", doing);
|
|
reginfo[0].lastcon = time(NULL);
|
|
|
|
/*
|
|
* Touch the mbtask.last semafore to prove this daemon
|
|
* is actually running.
|
|
* Reload configuration data if the file is changed.
|
|
*/
|
|
now = time(NULL);
|
|
tm = localtime(&now);
|
|
if (tm->tm_min != olddo) {
|
|
olddo = tm->tm_min;
|
|
TouchSema((char *)"mbtask.last");
|
|
if (file_time(tcfgfn) != tcfg_time) {
|
|
tasklog('+', "Task configuration changed, reloading");
|
|
load_taskcfg();
|
|
}
|
|
if (file_time(cfgfn) != cfg_time) {
|
|
tasklog('+', "Main configuration changed, reloading");
|
|
load_maincfg();
|
|
}
|
|
}
|
|
|
|
if (s_bbsopen && !UPSalarm && !LOADhi) {
|
|
|
|
if (!Processing) {
|
|
tasklog('+', "Resuming normal operations");
|
|
Processing = TRUE;
|
|
}
|
|
|
|
/*
|
|
* Here we run all normal operations.
|
|
*/
|
|
if (s_mailout && (!runtasktype(MBFIDO))) {
|
|
launch(TCFG.cmd_mailout, NULL, (char *)"mailout", MBFIDO);
|
|
running = checktasks(0);
|
|
s_mailout = FALSE;
|
|
}
|
|
|
|
if (s_mailin && (!runtasktype(MBFIDO))) {
|
|
launch(TCFG.cmd_mailin, NULL, (char *)"mailin", MBFIDO);
|
|
running = checktasks(0);
|
|
s_mailin = FALSE;
|
|
}
|
|
|
|
if (s_newnews && (!runtasktype(MBFIDO))) {
|
|
launch(TCFG.cmd_newnews, NULL, (char *)"newnews", MBFIDO);
|
|
running = checktasks(0);
|
|
s_newnews = FALSE;
|
|
}
|
|
|
|
/*
|
|
* Only run the nodelist compiler if nothing else
|
|
* is running. There's no hurry to compile the
|
|
* new lists. If more then one compiler is defined,
|
|
* start them in parallel.
|
|
*/
|
|
if (s_index && (!running)) {
|
|
if (strlen(TCFG.cmd_mbindex1))
|
|
launch(TCFG.cmd_mbindex1, NULL, (char *)"compiler 1", MBINDEX);
|
|
if (strlen(TCFG.cmd_mbindex2))
|
|
launch(TCFG.cmd_mbindex2, NULL, (char *)"compiler 2", MBINDEX);
|
|
if (strlen(TCFG.cmd_mbindex3))
|
|
launch(TCFG.cmd_mbindex3, NULL, (char *)"compiler 3", MBINDEX);
|
|
running = checktasks(0);
|
|
s_index = FALSE;
|
|
}
|
|
|
|
/*
|
|
* Linking messages is also only done when there is
|
|
* nothing else to do.
|
|
*/
|
|
if (s_msglink && (!running)) {
|
|
launch(TCFG.cmd_msglink, NULL, (char *)"msglink", MBFIDO);
|
|
running = checktasks(0);
|
|
s_msglink = FALSE;
|
|
}
|
|
|
|
/*
|
|
* Creating filerequest indexes.
|
|
*/
|
|
if (s_reqindex && (!running)) {
|
|
launch(TCFG.cmd_reqindex, NULL, (char *)"reqindex", MBFILE);
|
|
running = checktasks(0);
|
|
s_reqindex = FALSE;
|
|
}
|
|
|
|
if ((tm->tm_sec / SLOWRUN) != oldmin) {
|
|
|
|
/*
|
|
* These tasks run once per 20 seconds.
|
|
*/
|
|
oldmin = tm->tm_sec / SLOWRUN;
|
|
|
|
/*
|
|
* If the previous pingstat is still P_SENT, the we now consider it a timeout.
|
|
*/
|
|
if (pingstate == P_SENT) {
|
|
pingresult[pingnr] = FALSE;
|
|
icmp_errs++;
|
|
if (icmp_errs < ICMP_MAX_ERRS)
|
|
tasklog('p', "ping %s seq=%d timeout", pingaddress, p_sequence);
|
|
}
|
|
|
|
/*
|
|
* Check internet connection with ICMP ping
|
|
*/
|
|
rc = 0;
|
|
if (pingnr == 1) {
|
|
pingnr = 2;
|
|
if (strlen(TCFG.isp_ping2)) {
|
|
sprintf(pingaddress, "%s", TCFG.isp_ping2);
|
|
} else {
|
|
pingstate = P_NONE;
|
|
}
|
|
} else {
|
|
pingnr = 1;
|
|
if (strlen(TCFG.isp_ping1)) {
|
|
sprintf(pingaddress, "%s", TCFG.isp_ping1);
|
|
} else {
|
|
pingstate = P_NONE;
|
|
}
|
|
}
|
|
|
|
if (inet_aton(pingaddress, &paddr)) {
|
|
rc = ping_send(paddr);
|
|
if (rc) {
|
|
if (icmp_errs++ < ICMP_MAX_ERRS)
|
|
tasklog('?', "ping send %s rc=%d", pingaddress, rc);
|
|
pingstate = P_FAIL;
|
|
pingresult[pingnr] = FALSE;
|
|
} else {
|
|
pingstate = P_SENT;
|
|
}
|
|
} else {
|
|
if (icmp_errs++ < ICMP_MAX_ERRS)
|
|
tasklog('?', "Ping address %d is invalid \"%s\"", pingnr, pingaddress);
|
|
pingstate = P_NONE;
|
|
}
|
|
|
|
if (pingresult[1] == FALSE && pingresult[2] == FALSE) {
|
|
icmp_errs++;
|
|
if (internet) {
|
|
tasklog('!', "Internet connection is down");
|
|
internet = FALSE;
|
|
}
|
|
} else {
|
|
if (!internet) {
|
|
tasklog('!', "Internet connection is up");
|
|
internet = TRUE;
|
|
}
|
|
icmp_errs = 0;
|
|
}
|
|
|
|
/*
|
|
* Run the mailer if something to do. For now we run just
|
|
* one task and lock it with CALL_POTS.
|
|
* Later tasks for different calltypes should run parallel.
|
|
*/
|
|
if (s_scanout && !runtasktype(CALL_POTS)) {
|
|
cmd = xstrcpy(pw->pw_dir);
|
|
cmd = xstrcat(cmd, (char *)"/bin/mbcico");
|
|
launch(cmd, (char *)"-r1", (char *)"mbcico", CALL_POTS);
|
|
running = checktasks(0);
|
|
free(cmd);
|
|
cmd = NULL;
|
|
}
|
|
}
|
|
|
|
switch (pingstate) {
|
|
case P_NONE: pingresult[pingnr] = TRUE;
|
|
break;
|
|
case P_SENT: rc = ping_receive(paddr);
|
|
if (!rc) {
|
|
pingstate = P_OK;
|
|
pingresult[pingnr] = TRUE;
|
|
} else {
|
|
if (rc != -6)
|
|
tasklog('p', "ping recv %s id=%d rc=%d", pingaddress, id, rc);
|
|
}
|
|
break;
|
|
}
|
|
|
|
} else {
|
|
if (Processing) {
|
|
tasklog('+', "Suspending operations");
|
|
Processing = FALSE;
|
|
}
|
|
}
|
|
} while (TRUE);
|
|
}
|
|
|
|
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
struct passwd *pw;
|
|
int i;
|
|
pid_t frk;
|
|
FILE *fp;
|
|
|
|
/*
|
|
* Print copyright notices and setup logging.
|
|
*/
|
|
printf("MBTASK: MBSE BBS v%s Task Manager Daemon\n", VERSION);
|
|
printf(" %s\n\n", COPYRIGHT);
|
|
|
|
/*
|
|
* Catch all the signals we can, and ignore the rest. Note that SIGKILL can't be ignored
|
|
* but that's live. This daemon should only be stopped by SIGTERM.
|
|
*/
|
|
for(i = 0; i < NSIG; i++) {
|
|
if ((i == SIGHUP) || (i == SIGINT) || (i == SIGBUS) || (i == SIGILL) || (i == SIGSEGV) || (i == SIGTERM))
|
|
signal(i, (void (*))die);
|
|
else
|
|
signal(i, SIG_IGN);
|
|
}
|
|
|
|
/*
|
|
* Create the ping socket while we are still root.
|
|
*/
|
|
if ((ping_isocket = socket(PF_INET, SOCK_RAW, IPPROTO_ICMP)) == -1) {
|
|
perror("");
|
|
printf("socket init failed, is mbtask not installed setuid root?\n");
|
|
exit(1);
|
|
}
|
|
|
|
/*
|
|
* mbtask is setuid root, drop privileges to user mbse.
|
|
* This will stay forever like this, no need to become
|
|
* root again. The child can't even become root anymore.
|
|
*/
|
|
pw = getpwnam((char *)"mbse");
|
|
if (setuid(pw->pw_uid)) {
|
|
perror("");
|
|
printf("can't setuid to mbse\n");
|
|
close(ping_isocket);
|
|
exit(1);
|
|
}
|
|
if (setgid(pw->pw_gid)) {
|
|
perror("");
|
|
printf("can't setgid to bbs\n");
|
|
close(ping_isocket);
|
|
exit(1);
|
|
}
|
|
|
|
umask(007);
|
|
if (locktask(pw->pw_dir)) {
|
|
close(ping_isocket);
|
|
exit(1);
|
|
}
|
|
|
|
sprintf(cfgfn, "%s/etc/config.data", getenv("MBSE_ROOT"));
|
|
load_maincfg();
|
|
|
|
tasklog(' ', " ");
|
|
tasklog(' ', "MBTASK v%s", VERSION);
|
|
sprintf(tcfgfn, "%s/etc/task.data", getenv("MBSE_ROOT"));
|
|
load_taskcfg();
|
|
status_init();
|
|
|
|
memset(&task, 0, sizeof(task));
|
|
memset(®info, 0, sizeof(reginfo));
|
|
sprintf(spath, "%s/tmp/mbtask", getenv("MBSE_ROOT"));
|
|
|
|
/*
|
|
* Now that init is complete and this program is locked, it is
|
|
* safe to remove a stale socket if it is there after a crash.
|
|
*/
|
|
if (!file_exist(spath, R_OK))
|
|
unlink(spath);
|
|
|
|
/*
|
|
* Server initialization is complete. Now we can fork the
|
|
* daemon and return to the user. We need to do a setpgrp
|
|
* so that the daemon will no longer be assosiated with the
|
|
* users control terminal. This is done before the fork, so
|
|
* that the child will not be a process group leader. Otherwise,
|
|
* if the child were to open a terminal, it would become
|
|
* associated with that terminal as its control terminal.
|
|
*/
|
|
if ((pgrp = setpgid(0, 0)) == -1) {
|
|
tasklog('?', "$setpgid failed");
|
|
die(0);
|
|
}
|
|
|
|
frk = fork();
|
|
switch (frk) {
|
|
case -1:
|
|
tasklog('?', "$Unable to fork daemon");
|
|
die(0);
|
|
case 0:
|
|
/*
|
|
* Starting the deamon child process here.
|
|
*/
|
|
fclose(stdin);
|
|
fclose(stdout);
|
|
fclose(stderr);
|
|
scheduler();
|
|
/* Not reached */
|
|
default:
|
|
/*
|
|
* Here we detach this process and let the child
|
|
* run the deamon process. Put the child's pid
|
|
* in the lockfile before leaving.
|
|
*/
|
|
if ((fp = fopen(lockfile, "w"))) {
|
|
fprintf(fp, "%10u\n", frk);
|
|
fclose(fp);
|
|
}
|
|
tasklog('+', "Starting daemon with pid %d", frk);
|
|
exit(0);
|
|
}
|
|
|
|
/*
|
|
* Not reached
|
|
*/
|
|
return 0;
|
|
}
|
|
|
|
|
|
|