/***************************************************************************** * * $Id$ * Purpose ...............: MBSE BBS Task Manager * ***************************************************************************** * Copyright (C) 1997-2002 * * Michiel Broek FIDO: 2:280/2802 * Beekmansbos 10 * 1971 BV IJmuiden * the Netherlands * * This file is part of MBSE BBS. * * This BBS 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, or (at your option) any * later version. * * MBSE BBS 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 MBSE BBS; see the file COPYING. If not, write to the Free * Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. *****************************************************************************/ #include "../config.h" #include "libs.h" #include "../lib/structs.h" #include "../paths.h" #include "../lib/mberrors.h" #include "signame.h" #include "taskstat.h" #include "taskutil.h" #include "taskregs.h" #include "taskcomm.h" #include "callstat.h" #include "outstat.h" #include "nodelist.h" #include "ports.h" #include "calllist.h" #include "ping.h" #include "mbtask.h" /* * Global variables */ static onetask task[MAXTASKS]; /* Array with tasks */ extern tocall calllist[MAXTASKS]; /* Array with calllist */ reg_info reginfo[MAXCLIENT]; /* Array with clients */ static pid_t pgrp; /* Pids group */ static char lockfile[PATH_MAX]; /* Lockfile */ int sock = -1; /* Datagram socket */ struct sockaddr_un servaddr; /* Server address */ struct sockaddr_un from; /* From address */ int fromlen; static char spath[PATH_MAX]; /* Socket path */ int logtrans = 0; /* Log transactions */ struct taskrec TCFG; /* Task config record */ struct sysconfig CFG; /* System config */ struct _nodeshdr nodeshdr; /* Nodes header record */ struct _nodes nodes; /* Nodes data record */ struct _fidonethdr fidonethdr; /* Fidonet header rec. */ struct _fidonet fidonet; /* Fidonet data record */ time_t tcfg_time; /* Config record time */ time_t cfg_time; /* Config record time */ time_t tty_time; /* TTY config time */ char tcfgfn[PATH_MAX]; /* Config file name */ char cfgfn[PATH_MAX]; /* Config file name */ char ttyfn[PATH_MAX]; /* TTY file name */ extern int ping_isocket; /* Ping socket */ int internet = FALSE; /* Internet is down */ double Load; /* System Load */ int Processing; /* Is system running */ int ZMH = FALSE; /* Zone Mail Hour */ int UPSalarm = FALSE; /* UPS alarm status */ extern int s_bbsopen; /* BBS open semafore */ extern int s_scanout; /* Scan outbound sema */ extern int s_mailout; /* Mail out semafore */ extern int s_mailin; /* Mail in semafore */ extern int s_index; /* Compile nl semafore */ extern int s_newnews; /* New news semafore */ extern int s_reqindex; /* Create req index sem */ extern int s_msglink; /* Messages link sem */ int masterinit = FALSE; /* Master init needed */ int ptimer = PAUSETIME; /* Pause timer */ int tflags = FALSE; /* if nodes with Txx */ extern int nxt_hour; /* Next event hour */ extern int nxt_min; /* Next event minute */ extern _alist_l *alist; /* Nodes to call list */ int rescan = FALSE; /* Master rescan flag */ extern int pots_calls; extern int isdn_calls; extern int inet_calls; extern int pots_lines; /* POTS lines available */ extern int isdn_lines; /* ISDN lines available */ extern int pots_free; /* POTS lines free */ extern int isdn_free; /* ISDN lines free */ extern pp_list *pl; /* List of tty ports */ extern int ipmailers; /* TCP/IP mail sessions */ /* * Load main configuration, if it doesn't exist, create it. * This is the case the very first time when you start MBSE BBS. */ void load_maincfg(void) { FILE *fp; struct utsname un; int i; if ((fp = fopen(cfgfn, "r")) == NULL) { masterinit = TRUE; memset(&CFG, 0, sizeof(CFG)); /* * Fill Registration defaults */ sprintf(CFG.bbs_name, "MBSE BBS"); uname((struct utsname *)&un); #ifdef __USE_GNU sprintf(CFG.sysdomain, "%s.%s", un.nodename, un.domainname); #else #ifdef __linux__ sprintf(CFG.sysdomain, "%s.%s", un.nodename, un.__domainname); #endif #endif sprintf(CFG.comment, "MBSE BBS development"); sprintf(CFG.origin, "MBSE BBS. Made in the Netherlands"); sprintf(CFG.location, "Earth"); /* * Fill Filenames defaults */ sprintf(CFG.logfile, "system.log"); sprintf(CFG.error_log, "error.log"); sprintf(CFG.default_menu, "main.mnu"); sprintf(CFG.current_language, "english.lang"); sprintf(CFG.chat_log, "chat.log"); sprintf(CFG.welcome_logo, "logo.asc"); sprintf(CFG.mgrlog, "manager.log"); /* * Fill Global defaults */ sprintf(CFG.bbs_menus, "%s/english/menus", getenv("MBSE_ROOT")); sprintf(CFG.bbs_txtfiles, "%s/english/txtfiles", getenv("MBSE_ROOT")); sprintf(CFG.bbs_macros, "%s/english/macro", getenv("MBSE_ROOT")); sprintf(CFG.bbs_usersdir, "%s/home", getenv("MBSE_ROOT")); sprintf(CFG.nodelists, "%s/var/nodelist", getenv("MBSE_ROOT")); sprintf(CFG.inbound, "%s/var/unknown", getenv("MBSE_ROOT")); sprintf(CFG.pinbound, "%s/var/inbound", getenv("MBSE_ROOT")); sprintf(CFG.outbound, "%s/var/bso/outbound", getenv("MBSE_ROOT")); sprintf(CFG.msgs_path, "%s/var/msgs", getenv("MBSE_ROOT")); sprintf(CFG.uxpath, "%s", getenv("MBSE_ROOT")); sprintf(CFG.badtic, "%s/var/badtic", getenv("MBSE_ROOT")); sprintf(CFG.ticout, "%s/var/ticqueue", getenv("MBSE_ROOT")); sprintf(CFG.req_magic, "%s/magic", getenv("MBSE_ROOT")); sprintf(CFG.alists_path, "%s/var/arealists", getenv("MBSE_ROOT")); sprintf(CFG.out_queue, "%s/var/queue", getenv("MBSE_ROOT")); CFG.leavecase = TRUE; /* * Newfiles reports */ sprintf(CFG.ftp_base, "%s/ftp/pub", getenv("MBSE_ROOT")); CFG.newdays = 30; CFG.security.level = 20; CFG.new_split = 27; CFG.new_force = 30; /* * BBS Globals */ CFG.CityLen = 6; CFG.exclude_sysop = TRUE; CFG.iConnectString = FALSE; CFG.iAskFileProtocols = FALSE; CFG.sysop_access = 32000; CFG.password_length = 4; CFG.iPasswd_Char = '.'; CFG.idleout = 3; CFG.iQuota = 10; CFG.iCRLoginCount = 10; CFG.bbs_loglevel = DLOG_ALLWAYS | DLOG_ERROR | DLOG_ATTENT | DLOG_NORMAL | DLOG_VERBOSE; CFG.util_loglevel = DLOG_ALLWAYS | DLOG_ERROR | DLOG_ATTENT | DLOG_NORMAL | DLOG_VERBOSE; CFG.OLR_NewFileLimit = 30; CFG.OLR_MaxReq = 25; CFG.slow_util = TRUE; CFG.iCrashLevel = 100; CFG.iAttachLevel = 100; CFG.new_groups = 25; CFG.slow_util = TRUE; CFG.iCrashLevel = 100; CFG.iAttachLevel = 100; CFG.new_groups = 25; sprintf(CFG.startname, "bbs"); CFG.freespace = 10; /* * New Users */ CFG.newuser_access.level = 20; CFG.iCapUserName = TRUE; CFG.iAnsi = TRUE; CFG.iDataPhone = TRUE; CFG.iVoicePhone = TRUE; CFG.iDOB = TRUE; CFG.iTelephoneScan = TRUE; CFG.iLocation = TRUE; CFG.iHotkeys = TRUE; CFG.iCapLocation = FALSE; CFG.AskAddress = TRUE; CFG.GiveEmail = TRUE; /* * Colors */ CFG.TextColourF = 3; CFG.TextColourB = 0; CFG.UnderlineColourF = 14; CFG.UnderlineColourB = 0; CFG.InputColourF = 11; CFG.InputColourB = 0; CFG.CRColourF = 15; CFG.CRColourB = 0; CFG.MoreF = 13; CFG.MoreB = 0; CFG.HiliteF = 15; CFG.HiliteB = 0; CFG.FilenameF = 14; CFG.FilenameB = 0; CFG.FilesizeF = 13; CFG.FilesizeB = 0; CFG.FiledateF = 10; CFG.FiledateB = 0; CFG.FiledescF = 3; CFG.FiledescB = 0; CFG.MsgInputColourF = 3; CFG.MsgInputColourB = 0; /* * NextUser Door */ sprintf(CFG.sNuScreen, "welcome"); sprintf(CFG.sNuQuote, "Please press [ENTER] to continue: "); /* * Safe Door */ CFG.iSafeFirstDigit = 1; CFG.iSafeSecondDigit = 2; CFG.iSafeThirdDigit = 3; CFG.iSafeMaxTrys = 4; CFG.iSafeMaxNumber = 20; CFG.iSafeNumGen = FALSE; strcpy(CFG.sSafePrize, "Free access for a year!"); sprintf(CFG.sSafeWelcome, "safewel"); sprintf(CFG.sSafeOpened, "safeopen"); /* * Paging */ CFG.iPageLength = 30; CFG.iMaxPageTimes = 5; CFG.iAskReason = TRUE; CFG.iSysopArea = 1; CFG.iExternalChat = FALSE; strcpy(CFG.sExternalChat, "/usr/local/bin/chat"); CFG.iAutoLog = TRUE; strcpy(CFG.sChatDevice, "/dev/tty01"); CFG.iChatPromptChk = TRUE; CFG.iStopChatTime = TRUE; for (i = 0; i < 7; i++) { sprintf(CFG.cStartTime[i], "18:00"); sprintf(CFG.cStopTime[i], "23:59"); } /* * Time Bank */ CFG.iMaxTimeBalance = 200; CFG.iMaxTimeWithdraw = 100; CFG.iMaxTimeDeposit = 60; CFG.iMaxByteBalance = 500; CFG.iMaxByteWithdraw = 300; CFG.iMaxByteDeposit = 150; strcpy(CFG.sTimeRatio, "3:1"); strcpy(CFG.sByteRatio, "3:1"); /* * Fill ticconf defaults */ CFG.ct_ResFuture = TRUE; CFG.ct_ReplExt = TRUE; CFG.ct_PlusAll = TRUE; CFG.ct_Notify = TRUE; CFG.ct_Message = TRUE; CFG.ct_TIC = TRUE; CFG.tic_days = 30; sprintf(CFG.hatchpasswd, "DizIzMyBIGseeKret"); CFG.drspace = 2048; CFG.tic_systems = 10; CFG.tic_groups = 25; CFG.tic_dupes = 16000; /* * Fill Mail defaults */ CFG.maxpktsize = 150; CFG.maxarcsize = 300; sprintf(CFG.badboard, "%s/var/mail/badmail", getenv("MBSE_ROOT")); sprintf(CFG.dupboard, "%s/var/mail/dupemail", getenv("MBSE_ROOT")); sprintf(CFG.popnode, "localhost"); sprintf(CFG.smtpnode, "localhost"); sprintf(CFG.nntpnode, "localhost"); CFG.toss_days = 30; CFG.toss_dupes = 16000; CFG.toss_old = 60; CFG.defmsgs = 500; CFG.defdays = 90; CFG.toss_systems = 10; CFG.toss_groups = 25; CFG.UUCPgate.zone = 2; CFG.UUCPgate.net = 292; CFG.UUCPgate.node = 875; sprintf(CFG.UUCPgate.domain, "fidonet"); CFG.nntpdupes = 16000; for (i = 0; i < 32; i++) { sprintf(CFG.fname[i], "Flag %d", i+1); sprintf(CFG.aname[i], "Flag %d", i+1); } sprintf(CFG.aname[0], "Everyone"); /* * Fido mailer defaults */ CFG.timeoutreset = 3L; CFG.timeoutconnect = 60L; sprintf(CFG.phonetrans[0].match, "31-255"); sprintf(CFG.phonetrans[1].match, "31-"); sprintf(CFG.phonetrans[1].repl, "0"); sprintf(CFG.phonetrans[2].repl, "00"); CFG.Speed = 9600; CFG.dialdelay = 60; sprintf(CFG.Flags, "CM,XX,IBN,IFC,ITN"); CFG.cico_loglevel = DLOG_ALLWAYS | DLOG_ERROR | DLOG_ATTENT | DLOG_NORMAL | DLOG_VERBOSE; /* * FTP Server */ CFG.ftp_limit = 20; CFG.ftp_loginfails = 2; CFG.ftp_compress = TRUE; CFG.ftp_tar = TRUE; CFG.ftp_log_cmds = TRUE; CFG.ftp_anonymousok = TRUE; CFG.ftp_mbseok = FALSE; sprintf(CFG.ftp_readme_login, "README*"); sprintf(CFG.ftp_readme_cwd, "README*"); sprintf(CFG.ftp_msg_login, "/welcome.msg"); sprintf(CFG.ftp_msg_cwd, ".message"); sprintf(CFG.ftp_msg_shutmsg, "/etc/nologin"); sprintf(CFG.ftp_upl_path, "%s/ftp/incoming", getenv("MBSE_ROOT")); sprintf(CFG.ftp_banner, "%s/etc/ftpbanner", getenv("MBSE_ROOT")); sprintf(CFG.ftp_email, "sysop@%s", CFG.sysdomain); sprintf(CFG.ftp_pth_filter, "^[-A-Za-z0-9_\\.]*$ ^\\. ^-"); sprintf(CFG.ftp_pth_message, "%s/etc/pathmsg", getenv("MBSE_ROOT")); /* * WWW defaults */ sprintf(CFG.www_root, "/var/www/htdocs"); sprintf(CFG.www_link2ftp, "files"); sprintf(CFG.www_url, "http://%s", CFG.sysdomain); sprintf(CFG.www_charset, "ISO 8859-1"); sprintf(CFG.www_author, "Your Name"); sprintf(CFG.www_convert,"/usr/X11R6/bin/convert -geometry x100"); CFG.www_files_page = 10; CFG.maxarticles = 500; if ((fp = fopen(cfgfn, "a+")) == NULL) { perror(""); fprintf(stderr, "Can't create %s\n", cfgfn); exit(MBERR_INIT_ERROR); } fwrite(&CFG, sizeof(CFG), 1, fp); fclose(fp); chmod(cfgfn, 0640); } else { fread(&CFG, sizeof(CFG), 1, fp); fclose(fp); } cfg_time = file_time(cfgfn); } /* * Load task configuration data. */ void load_taskcfg(void) { FILE *fp; if ((fp = fopen(tcfgfn, "r")) == NULL) { memset(&TCFG, 0, sizeof(TCFG)); TCFG.maxload = 1.50; sprintf(TCFG.zmh_start, "02:30"); sprintf(TCFG.zmh_end, "03:30"); sprintf(TCFG.cmd_mailout, "%s/bin/mbfido scan web -quiet", getenv("MBSE_ROOT")); sprintf(TCFG.cmd_mailin, "%s/bin/mbfido tic toss web -quiet", getenv("MBSE_ROOT")); sprintf(TCFG.cmd_newnews, "%s/bin/mbfido news web -quiet", getenv("MBSE_ROOT")); sprintf(TCFG.cmd_mbindex1, "%s/bin/mbindex -quiet", getenv("MBSE_ROOT")); if (strlen(_PATH_GOLDNODE)) sprintf(TCFG.cmd_mbindex2, "%s/bin/goldnode -f -q", getenv("MBSE_ROOT")); sprintf(TCFG.cmd_msglink, "%s/bin/mbmsg link -quiet", getenv("MBSE_ROOT")); sprintf(TCFG.cmd_reqindex, "%s/bin/mbfile index -quiet", getenv("MBSE_ROOT")); TCFG.debug = FALSE; TCFG.max_tcp = 0; sprintf(TCFG.isp_ping1, "192.168.1.1"); sprintf(TCFG.isp_ping2, "192.168.1.1"); if ((fp = fopen(tcfgfn, "a+")) == NULL) { tasklog('?', "$Can't create %s", tcfgfn); die(MBERR_INIT_ERROR); } fwrite(&TCFG, sizeof(TCFG), 1, fp); fclose(fp); chmod(tcfgfn, 0640); tasklog('+', "Created new %s", tcfgfn); } else { fread(&TCFG, sizeof(TCFG), 1, fp); fclose(fp); } tcfg_time = file_time(tcfgfn); } /* * Launch an external program in the background. * On success add it to the tasklist and return * the pid. Set the pause timer. */ pid_t launch(char *cmd, char *opts, char *name, int tasktype) { char buf[PATH_MAX]; char *vector[16]; int i, rc = 0; pid_t pid = 0; if (checktasks(0) >= MAXTASKS) { tasklog('?', "Launch: can't execute %s, maximum tasks reached", cmd); return 0; } if (opts == NULL) sprintf(buf, "%s", cmd); else sprintf(buf, "%s %s", cmd, opts); i = 0; vector[i++] = strtok(buf," \t\n\0"); while ((vector[i++] = strtok(NULL," \t\n")) && (i<16)); vector[15] = NULL; if (file_exist(vector[0], X_OK)) { tasklog('?', "Launch: can't execute %s, command not found", vector[0]); return 0; } pid = fork(); switch (pid) { case -1: tasklog('?', "$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('?', "$Launch: \"%s\": reopen of stdin to /dev/null failed", buf); _exit(MBERR_EXEC_FAILED); } close(1); if (open("/dev/null", O_WRONLY | O_APPEND | O_CREAT,0600) != 1) { tasklog('?', "$Launch: \"%s\": reopen of stdout to /dev/null failed", buf); _exit(MBERR_EXEC_FAILED); } close(2); if (open("/dev/null", O_WRONLY | O_APPEND | O_CREAT,0600) != 2) { tasklog('?', "$Launch: \"%s\": reopen of stderr to /dev/null failed", buf); _exit(MBERR_EXEC_FAILED); } errno = 0; rc = execv(vector[0],vector); tasklog('?', "$Launch: execv \"%s\" failed, returned %d", cmd, rc); _exit(MBERR_EXEC_FAILED); 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; } } ptimer = PAUSETIME; 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; 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 a mailer call is finished, set the global rescan flag. */ if (task[i].tasktype == CM_POTS || task[i].tasktype == CM_ISDN || task[i].tasktype == CM_INET) rescan = TRUE; ptimer = PAUSETIME; } if (first && task[i].rc) { first = FALSE; tasklog('t', "Task Type pid stat rc"); tasklog('t', "---------------- ------- ----- ---- -----"); for (j = 0; j < MAXTASKS; j++) if (strlen(task[j].name)) tasklog('t', "%-16s %s %5d %s %5d", task[j].name, callmode(task[j].tasktype), task[j].pid, task[j].running?"runs":"stop", task[j].rc); } 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: 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) { for (j = 0; j < MAXTASKS; j++) { if (calllist[j].taskpid == task[i].pid) { calllist[j].calling = FALSE; calllist[j].taskpid = 0; rescan = TRUE; } } memset(&task[i], 0, sizeof(onetask)); } } } return count; } void die(int onsig) { int i, count; signal(onsig, SIG_IGN); if (onsig == SIGTERM) tasklog('+', "Starting normal shutdown"); else tasklog('+', "Abnormal shutdown 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); } } if ((count = checktasks(0))) tasklog('?', "Shutdown with %d tasks still running", count); else tasklog('+', "Good, no more tasks running"); 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); } /* * 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(MBERR_UPS_ALARM); } /* * 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, i, rlen, found; static int LOADhi = FALSE, oldmin = 70, olddo = 70, oldsec = 70; char *cmd = NULL, opts[41], port[21]; static char doing[32], buf[2048]; time_t now; struct tm *tm, *utm; #if defined(__linux__) FILE *fp; #endif struct pollfd pfd; int call_work = 0; static int call_entry = MAXTASKS; double loadavg[3]; pp_list *tpl; InitFidonet(); /* * Registrate this server for mbmon in slot 0. */ reginfo[0].pid = getpid(); strcpy(reginfo[0].tty, "-"); strcpy(reginfo[0].uname, "mbse"); strcpy(reginfo[0].prg, "mbtask"); strcpy(reginfo[0].city, "localhost"); strcpy(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('?', "$Can't create socket"); die(MBERR_INIT_ERROR); } memset(&servaddr, 0, sizeof(servaddr)); servaddr.sun_family = AF_UNIX; strcpy(servaddr.sun_path, spath); if (bind(sock, &servaddr, sizeof(servaddr)) < 0) { close(sock); sock = -1; tasklog('?', "$Can't bind socket %s", spath); die(MBERR_INIT_ERROR); } /* * 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); if (!TCFG.max_tcp && !pots_lines && !isdn_lines) { tasklog('?', "ERROR: this system cannot connect to other systems, check setup"); } /* * Enter the mainloop (forever) */ do { /* * Poll UNIX Datagram socket until the defined timeout of one second. * This means we listen of a MBSE BBS client program has something * to tell. */ 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) { /* * Process the clients request */ 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_ports(); /* * Check the systems load average. */ Load = loadavg[0] = loadavg[1] = loadavg[2] = 0.0; #if defined(__FreeBSD__) || defined(__NetBSD__) if (getloadavg(loadavg, 3) == 3) { Load = loadavg[0]; } #elif defined(__linux__) if ((fp = fopen((char *)"/proc/loadavg", "r"))) { if (fscanf(fp, "%lf %lf %lf", &loadavg[0], &loadavg[1], &loadavg[2]) == 3) { Load = loadavg[0]; } else { tasklog('-', "error"); } fclose(fp); } #endif if (Load >= TCFG.maxload) { if (!LOADhi) { tasklog('!', "System load too high: %2.2f (%2.2f)", Load, TCFG.maxload); LOADhi = TRUE; } } else { if (LOADhi) { tasklog('!', "System load normal: %2.2f (%2.2f)", Load, TCFG.maxload); LOADhi = FALSE; } } /* * 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", Load); 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 some file is changed. */ now = time(NULL); tm = localtime(&now); utm = gmtime(&now); if (tm->tm_min != olddo) { /* * Each minute we execute this part */ olddo = tm->tm_min; TouchSema((char *)"mbtask.last"); if (file_time(tcfgfn) != tcfg_time) { tasklog('+', "Task configuration changed, reloading"); load_taskcfg(); sem_set((char *)"scanout", TRUE); } if (file_time(cfgfn) != cfg_time) { tasklog('+', "Main configuration changed, reloading"); load_maincfg(); sem_set((char *)"scanout", TRUE); } if (file_time(ttyfn) != tty_time) { tasklog('+', "Ports configuration changed, reloading"); load_ports(); check_ports(); sem_set((char *)"scanout", TRUE); } /* * If the next event time is reached, rescan the outbound */ if ((utm->tm_hour == nxt_hour) && (utm->tm_min == nxt_min)) { tasklog('+', "It is now %02d:%02d UTC, starting new event", utm->tm_hour, utm->tm_min); sem_set((char *)"scanout", TRUE); } } /* * Check system processing state */ if (s_bbsopen && !UPSalarm && !LOADhi) { if (!Processing) { tasklog('+', "Resuming normal operations"); Processing = TRUE; } } else { if (Processing) { tasklog('+', "Suspending operations"); Processing = FALSE; } } /* * Check Pause Timer, make sure it's only checked * once each second. Also do pingcheck. */ if (tm->tm_sec != oldsec) { oldsec = tm->tm_sec; if (ptimer) ptimer--; check_ping(); } if (Processing) { /* * Here we run all normal operations. */ running = checktasks(0); if (s_mailout && (!ptimer) && (!runtasktype(MBFIDO))) { launch(TCFG.cmd_mailout, NULL, (char *)"mailout", MBFIDO); running = checktasks(0); s_mailout = FALSE; } if (s_mailin && (!ptimer) && (!runtasktype(MBFIDO))) { launch(TCFG.cmd_mailin, NULL, (char *)"mailin", MBFIDO); running = checktasks(0); s_mailin = FALSE; } if (s_newnews && (!ptimer) && (!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 && (!ptimer) && (!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 && (!ptimer) && (!running)) { launch(TCFG.cmd_msglink, NULL, (char *)"msglink", MBFIDO); running = checktasks(0); s_msglink = FALSE; } /* * Creating filerequest indexes, also only if nothing to do. */ if (s_reqindex && (!ptimer) && (!running)) { launch(TCFG.cmd_reqindex, NULL, (char *)"reqindex", MBFILE); running = checktasks(0); s_reqindex = FALSE; } } /* if (Processing) */ if ((tm->tm_sec / SLOWRUN) != oldmin) { /* * These tasks run once per 20 seconds. */ oldmin = tm->tm_sec / SLOWRUN; if (Processing) { /* * Update outbound status if needed. */ if (rescan) { rescan = FALSE; outstat(); call_work = check_calllist(); } /* * Launch the systems to call, start one system each time. * Set the safety counter to MAXTASKS + 1, this forces that * the counter really will advance to the next node in case * of failing sessions. */ i = MAXTASKS + 1; found = FALSE; if (call_work) { while (TRUE) { /* * Rotate the call entries */ if (call_entry == MAXTASKS) call_entry = 0; else call_entry++; /* * If a valid entry, and not yet calling, and the retry time is reached, * then launch a callprocess for this node. */ if (calllist[call_entry].addr.zone && !calllist[call_entry].calling && (calllist[call_entry].cst.trytime < now)) { if ((calllist[call_entry].callmode == CM_INET) && (ipmailers < TCFG.max_tcp) && internet) { found = TRUE; break; } if ((calllist[call_entry].callmode == CM_ISDN) && (runtasktype(CM_ISDN) < isdn_free)) { found = TRUE; break; } if ((calllist[call_entry].callmode == CM_POTS) && (runtasktype(CM_POTS) < pots_free)) { found = TRUE; break; } } /* * Safety counter, if all systems are already calling, we should * never break out of this loop anymore. */ i--; if (!i) break; } if (found) { cmd = xstrcpy(pw->pw_dir); cmd = xstrcat(cmd, (char *)"/bin/mbcico"); /* * For ISDN or POTS, select a free tty device. */ switch (calllist[call_entry].callmode) { case CM_ISDN: for (tpl = pl; tpl; tpl = tpl->next) { if (!tpl->locked && (tpl->dflags & calllist[call_entry].diflags)) { sprintf(port, "-l %s ", tpl->tty); break; } } break; case CM_POTS: for (tpl = pl; tpl; tpl = tpl->next) { if (!tpl->locked && (tpl->mflags & calllist[call_entry].moflags)) { sprintf(port, "-l %s ", tpl->tty); break; } } break; default: port[0] = '\0'; break; } sprintf(opts, "%sf%u.n%u.z%u", port, calllist[call_entry].addr.node, calllist[call_entry].addr.net, calllist[call_entry].addr.zone); calllist[call_entry].taskpid = launch(cmd, opts, (char *)"mbcico", calllist[call_entry].callmode); if (calllist[call_entry].taskpid) calllist[call_entry].calling = TRUE; running = checktasks(0); rescan = TRUE; free(cmd); cmd = NULL; } } } /* if (Processing) */ } /* if ((tm->tm_sec / SLOWRUN) != oldmin) */ } 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); } init_pingsocket(); /* * 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(MBERR_INIT_ERROR); } if (setgid(pw->pw_gid)) { perror(""); printf("can't setgid to bbs\n"); close(ping_isocket); exit(MBERR_INIT_ERROR); } umask(007); if (locktask(pw->pw_dir)) { close(ping_isocket); exit(MBERR_NO_PROGLOCK); } 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)); memset(&calllist, 0, sizeof(calllist)); sprintf(spath, "%s/tmp/mbtask", getenv("MBSE_ROOT")); sprintf(ttyfn, "%s/etc/ttyinfo.data", getenv("MBSE_ROOT")); load_ports(); check_ports(); /* * 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(MBERR_INIT_ERROR); } frk = fork(); switch (frk) { case -1: tasklog('?', "$Unable to fork daemon"); die(MBERR_INIT_ERROR); 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(MBERR_OK); } /* * Not reached */ return 0; }