imported original firmware WRT54GL_v4.30.11_11_US

1 files changed, 1100 insertions, 0 deletions

diff --git a/release/src/router/busybox/miscutils/crond.c b/release/src/router/busybox/miscutils/crond.c
new file mode 100644
index 00000000..f0920136
--- /dev/null
+++ b/release/src/router/busybox/miscutils/crond.c
@@ -0,0 +1,1100 @@
+/*
+ * crond -d[#] -c <crondir> -f -b
+ *
+ * run as root, but NOT setuid root
+ *
+ * Copyright 1994 Matthew Dillon (dillon@apollo.west.oic.com)
+ * May be distributed under the GNU General Public License
+ *
+ * Vladimir Oleynik <dzo@simtreas.ru> (C) 2002 to be used in busybox
+ */
+
+#define VERSION "2.3.2"
+
+#undef FEATURE_DEBUG_OPT
+
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include <errno.h>
+#include <time.h>
+#include <dirent.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <syslog.h>
+#include <signal.h>
+#include <getopt.h>
+#include <sys/ioctl.h>
+#include <sys/wait.h>
+#include <sys/stat.h>
+#include <sys/resource.h>
+
+#include "busybox.h"
+
+#define arysize(ary)    (sizeof(ary)/sizeof((ary)[0]))
+
+#ifndef CRONTABS
+#define CRONTABS        "/var/spool/cron/crontabs"
+#endif
+#ifndef TMPDIR
+#define TMPDIR          "/var/spool/cron"
+#endif
+#ifndef SENDMAIL
+#define SENDMAIL        "/usr/sbin/sendmail"
+#endif
+#ifndef SENDMAIL_ARGS
+#define SENDMAIL_ARGS   "-ti", "oem"
+#endif
+#ifndef CRONUPDATE
+#define CRONUPDATE      "cron.update"
+#endif
+#ifndef MAXLINES
+#define MAXLINES        256             /* max lines in non-root crontabs */
+#endif
+
+static const char def_sh[] = "/bin/sh";
+
+
+typedef struct CronFile {
+    struct CronFile *cf_Next;
+    struct CronLine *cf_LineBase;
+    char        *cf_User;       /* username                     */
+    int         cf_Ready;       /* bool: one or more jobs ready */
+    int         cf_Running;     /* bool: one or more jobs running */
+    int         cf_Deleted;     /* marked for deletion, ignore  */
+} CronFile;
+
+typedef struct CronLine {
+    struct CronLine *cl_Next;
+    char        *cl_Shell;      /* shell command                        */
+    pid_t       cl_Pid;         /* running pid, 0, or armed (-1)        */
+    int         cl_MailFlag;    /* running pid is for mail              */
+    int         cl_MailPos;     /* 'empty file' size                    */
+    char        cl_Mins[60];    /* 0-59                                 */
+    char        cl_Hrs[24];     /* 0-23                                 */
+    char        cl_Days[32];    /* 1-31                                 */
+    char        cl_Mons[12];    /* 0-11                                 */
+    char        cl_Dow[7];      /* 0-6, beginning sunday                */
+} CronLine;
+
+#define RUN_RANOUT      1
+#define RUN_RUNNING     2
+#define RUN_FAILED      3
+
+#define DaemonUid 0
+
+#ifdef FEATURE_DEBUG_OPT
+static short DebugOpt;
+#endif
+
+static short LogLevel = 8;
+static const char  *LogFile;
+static const char  *CDir = CRONTABS;
+
+static void startlogger(void);
+
+static void CheckUpdates(void);
+static void SynchronizeDir(void);
+static int TestJobs(time_t t1, time_t t2);
+static void RunJobs(void);
+static int CheckJobs(void);
+
+static void RunJob(const char *user, CronLine *line);
+#ifdef CONFIG_FEATURE_CROND_CALL_SENDMAIL
+static void EndJob(const char *user, CronLine *line);
+#else
+#define EndJob(user, line)  line->cl_Pid = 0
+#endif
+
+static void DeleteFile(const char *userName);
+
+static CronFile *FileBase;
+
+
+static void
+crondlog(const char *ctl, ...)
+{
+    va_list va;
+    int level = (int)(ctl[0] & 0xf);
+    int type = level == 20 ?
+		    LOG_ERR : ((ctl[0] & 0100) ? LOG_WARNING : LOG_NOTICE);
+
+
+    va_start(va, ctl);
+    if (level >= LogLevel) {
+
+#ifdef FEATURE_DEBUG_OPT
+	if (DebugOpt) vfprintf(stderr, ctl, va);
+	else
+#endif
+	    if (LogFile == 0) vsyslog(type, ctl, va);
+	    else {
+		 int  logfd;
+
+		 if ((logfd = open(LogFile, O_WRONLY|O_CREAT|O_APPEND, 600)) >= 0) {
+		    vdprintf(logfd, ctl, va);
+		    close(logfd);
+#ifdef FEATURE_DEBUG_OPT
+		 } else {
+		    bb_perror_msg("Can't open log file");
+#endif
+		}
+	    }
+    }
+    va_end(va);
+    if(ctl[0] & 0200)
+	exit(20);
+}
+
+int
+crond_main(int ac, char **av)
+{
+    unsigned long opt;
+    char *lopt, *Lopt, *copt;
+#ifdef FEATURE_DEBUG_OPT
+    char *dopt;
+    bb_opt_complementaly = "f-b:b-f:S-L:L-S:d-l";
+#else
+    bb_opt_complementaly = "f-b:b-f:S-L:L-S";
+#endif
+
+    opterr = 0;         /* disable getopt 'errors' message.*/
+    opt = bb_getopt_ulflags(ac, av, "l:L:fbSc:"
+#ifdef FEATURE_DEBUG_OPT
+				"d:"
+#endif
+	    , &lopt, &Lopt, &copt
+#ifdef FEATURE_DEBUG_OPT
+	    , &dopt
+#endif
+	    );
+    if(opt & 1)
+	LogLevel = atoi(lopt);
+    if(opt & 2)
+	if (*Lopt != 0) LogFile = Lopt;
+    if(opt & 32) {
+	if (*copt != 0) CDir = copt;
+	}
+#ifdef FEATURE_DEBUG_OPT
+    if(opt & 64) {
+	DebugOpt = atoi(dopt);
+	LogLevel = 0;
+    }
+#endif
+
+    /*
+     * change directory
+     */
+
+    if (chdir(CDir) != 0)
+	bb_perror_msg_and_die("%s", CDir);
+
+    signal(SIGHUP,SIG_IGN);   /* hmm.. but, if kill -HUP original
+				 * version - his died. ;(
+				 */
+    /*
+     * close stdin and stdout, stderr.
+     * close unused descriptors -  don't need.
+     * optional detach from controlling terminal
+     */
+
+    if (!(opt & 4)) {
+	if(daemon(1, 0) < 0) {
+		bb_perror_msg_and_die("daemon");
+	} 
+#if defined(__uClinux__)
+	else {
+	    /* reexec for vfork() do continue parent */
+	    vfork_daemon_rexec(ac, av, "-f");
+	}
+#endif /* uClinux */
+    }
+
+    (void)startlogger();                /* need if syslog mode selected */
+
+    /*
+     * main loop - synchronize to 1 second after the minute, minimum sleep
+     *             of 1 second.
+     */
+
+    crondlog("\011%s " VERSION " dillon, started, log level %d\n", bb_applet_name,
+						LogLevel);
+
+    SynchronizeDir();
+
+    {
+	time_t t1 = time(NULL);
+	time_t t2;
+	long dt;
+	short rescan = 60;
+	short sleep_time = 60;
+
+	for (;;) {
+	    sleep((sleep_time + 1) - (short)(time(NULL) % sleep_time));
+
+	    t2 = time(NULL);
+	    dt = t2 - t1;
+
+	    /*
+	     * The file 'cron.update' is checked to determine new cron
+	     * jobs.  The directory is rescanned once an hour to deal
+	     * with any screwups.
+	     *
+	     * check for disparity.  Disparities over an hour either way
+	     * result in resynchronization.  A reverse-indexed disparity
+	     * less then an hour causes us to effectively sleep until we
+	     * match the original time (i.e. no re-execution of jobs that
+	     * have just been run).  A forward-indexed disparity less then
+	     * an hour causes intermediate jobs to be run, but only once
+	     * in the worst case.
+	     *
+	     * when running jobs, the inequality used is greater but not
+	     * equal to t1, and less then or equal to t2.
+	     */
+
+	    if (--rescan == 0) {
+		rescan = 60;
+		SynchronizeDir();
+	    }
+	    CheckUpdates();
+#ifdef FEATURE_DEBUG_OPT
+	    if (DebugOpt)
+		crondlog("\005Wakeup dt=%d\n", dt);
+#endif
+	    if (dt < -60*60 || dt > 60*60) {
+		t1 = t2;
+		crondlog("\111time disparity of %d minutes detected\n", dt / 60);
+	    } else if (dt > 0) {
+		TestJobs(t1, t2);
+		RunJobs();
+		sleep(5);
+		if (CheckJobs() > 0)
+		   sleep_time = 10;
+		else
+		   sleep_time = 60;
+		t1 = t2;
+	    }
+	}
+    }
+    /* not reached */
+}
+
+
+#if defined(FEATURE_DEBUG_OPT) || defined(CONFIG_FEATURE_CROND_CALL_SENDMAIL)
+/*
+    write to temp file..
+*/
+static void
+fdprintf(int fd, const char *ctl, ...)
+{
+    va_list va;
+
+    va_start(va, ctl);
+    vdprintf(fd, ctl, va);
+    va_end(va);
+}
+#endif
+
+
+static int
+ChangeUser(const char *user)
+{
+    struct passwd *pas;
+
+    /*
+     * Obtain password entry and change privilages
+     */
+
+    if ((pas = getpwnam(user)) == 0) {
+	crondlog("\011failed to get uid for %s", user);
+	return(-1);
+    }
+    setenv("USER", pas->pw_name, 1);
+    setenv("HOME", pas->pw_dir, 1);
+    setenv("SHELL", def_sh, 1);
+
+    /*
+     * Change running state to the user in question
+     */
+
+    if (initgroups(user, pas->pw_gid) < 0) {
+	crondlog("\011initgroups failed: %s %m", user);
+	return(-1);
+    }
+    /* drop all priviledges */
+    if (setgid(pas->pw_gid) < 0) {
+	crondlog("\011setgid failed: %s %d", user, pas->pw_gid);
+	return(-1);
+    }
+    if (setuid(pas->pw_uid) < 0) {
+	crondlog("\011setuid failed: %s %d", user, pas->pw_uid);
+	return(-1);
+    }
+	if (chdir(pas->pw_dir) < 0) {
+	crondlog("\011chdir failed: %s: %m", pas->pw_dir);
+	    if (chdir(TMPDIR) < 0) {
+	    crondlog("\011chdir failed: %s: %m", TMPDIR);
+		return(-1);
+	    }
+	}
+    return(pas->pw_uid);
+}
+
+static void
+startlogger(void)
+{
+    if (LogFile == 0)
+	openlog(bb_applet_name, LOG_CONS|LOG_PID, LOG_CRON);
+#ifdef FEATURE_DEBUG_OPT
+    else { /* test logfile */
+    int  logfd;
+
+	if ((logfd = open(LogFile, O_WRONLY|O_CREAT|O_APPEND, 600)) >= 0)
+	   close(logfd);
+	else
+	   bb_perror_msg("Failed to open log file '%s' reason", LogFile);
+    }
+#endif
+}
+
+
+static const char * const DowAry[] = {
+    "sun",
+    "mon",
+    "tue",
+    "wed",
+    "thu",
+    "fri",
+    "sat",
+
+    "Sun",
+    "Mon",
+    "Tue",
+    "Wed",
+    "Thu",
+    "Fri",
+    "Sat",
+    NULL
+};
+
+static const char * const MonAry[] = {
+    "jan",
+    "feb",
+    "mar",
+    "apr",
+    "may",
+    "jun",
+    "jul",
+    "aug",
+    "sep",
+    "oct",
+    "nov",
+    "dec",
+
+    "Jan",
+    "Feb",
+    "Mar",
+    "Apr",
+    "May",
+    "Jun",
+    "Jul",
+    "Aug",
+    "Sep",
+    "Oct",
+    "Nov",
+    "Dec",
+    NULL
+};
+
+static char *
+ParseField(char *user, char *ary, int modvalue, int off,
+				const char * const *names, char *ptr)
+{
+    char *base = ptr;
+    int n1 = -1;
+    int n2 = -1;
+
+    if (base == NULL)
+	return(NULL);
+
+    while (*ptr != ' ' && *ptr != '\t' && *ptr != '\n') {
+	int skip = 0;
+
+	/*
+	 * Handle numeric digit or symbol or '*'
+	 */
+
+	if (*ptr == '*') {
+	    n1 = 0;                     /* everything will be filled */
+	    n2 = modvalue - 1;
+	    skip = 1;
+	    ++ptr;
+	} else if (*ptr >= '0' && *ptr <= '9') {
+	    if (n1 < 0)
+		n1 = strtol(ptr, &ptr, 10) + off;
+	    else
+		n2 = strtol(ptr, &ptr, 10) + off;
+	    skip = 1;
+	} else if (names) {
+	    int i;
+
+	    for (i = 0; names[i]; ++i) {
+		if (strncmp(ptr, names[i], strlen(names[i])) == 0) {
+		    break;
+		}
+	    }
+	    if (names[i]) {
+		ptr += strlen(names[i]);
+		if (n1 < 0)
+		    n1 = i;
+		else
+		    n2 = i;
+		skip = 1;
+	    }
+	}
+
+	/*
+	 * handle optional range '-'
+	 */
+
+	if (skip == 0) {
+	    crondlog("\111failed user %s parsing %s\n", user, base);
+	    return(NULL);
+	}
+	if (*ptr == '-' && n2 < 0) {
+	    ++ptr;
+	    continue;
+	}
+
+	/*
+	 * collapse single-value ranges, handle skipmark, and fill
+	 * in the character array appropriately.
+	 */
+
+	if (n2 < 0)
+	    n2 = n1;
+
+	if (*ptr == '/')
+	    skip = strtol(ptr + 1, &ptr, 10);
+
+	/*
+	 * fill array, using a failsafe is the easiest way to prevent
+	 * an endless loop
+	 */
+
+	{
+	    int s0 = 1;
+	    int failsafe = 1024;
+
+	    --n1;
+	    do {
+		n1 = (n1 + 1) % modvalue;
+
+		if (--s0 == 0) {
+		    ary[n1 % modvalue] = 1;
+		    s0 = skip;
+		}
+	    } while (n1 != n2 && --failsafe);
+
+	    if (failsafe == 0) {
+		crondlog("\111failed user %s parsing %s\n", user, base);
+		return(NULL);
+	    }
+	}
+	if (*ptr != ',')
+	    break;
+	++ptr;
+	n1 = -1;
+	n2 = -1;
+    }
+
+    if (*ptr != ' ' && *ptr != '\t' && *ptr != '\n') {
+	crondlog("\111failed user %s parsing %s\n", user, base);
+	return(NULL);
+    }
+
+    while (*ptr == ' ' || *ptr == '\t' || *ptr == '\n')
+	++ptr;
+
+#ifdef FEATURE_DEBUG_OPT
+    if (DebugOpt) {
+	int i;
+
+	for (i = 0; i < modvalue; ++i)
+	    crondlog("\005%d", ary[i]);
+	crondlog("\005\n");
+    }
+#endif
+
+    return(ptr);
+}
+
+static void
+FixDayDow(CronLine *line)
+{
+    short i;
+    short weekUsed = 0;
+    short daysUsed = 0;
+
+    for (i = 0; i < arysize(line->cl_Dow); ++i) {
+	if (line->cl_Dow[i] == 0) {
+	    weekUsed = 1;
+	    break;
+	}
+    }
+    for (i = 0; i < arysize(line->cl_Days); ++i) {
+	if (line->cl_Days[i] == 0) {
+	    daysUsed = 1;
+	    break;
+	}
+    }
+    if (weekUsed && !daysUsed) {
+	memset(line->cl_Days, 0, sizeof(line->cl_Days));
+    }
+    if (daysUsed && !weekUsed) {
+	memset(line->cl_Dow, 0, sizeof(line->cl_Dow));
+    }
+}
+
+
+
+static void
+SynchronizeFile(const char *fileName)
+{
+    int maxEntries = MAXLINES;
+    int maxLines;
+    char buf[1024];
+
+    if (strcmp(fileName, "root") == 0)
+	maxEntries = 65535;
+    maxLines = maxEntries * 10;
+
+    if (fileName) {
+	FILE *fi;
+
+	DeleteFile(fileName);
+
+	if ((fi = fopen(fileName, "r")) != NULL) {
+	    struct stat sbuf;
+
+	    if (fstat(fileno(fi), &sbuf) == 0 && sbuf.st_uid == DaemonUid) {
+		CronFile *file = calloc(1, sizeof(CronFile));
+		CronLine **pline;
+
+		file->cf_User = strdup(fileName);
+		pline = &file->cf_LineBase;
+
+		while (fgets(buf, sizeof(buf), fi) != NULL && --maxLines) {
+		    CronLine line;
+		    char *ptr;
+
+		    if (buf[0])
+			buf[strlen(buf)-1] = 0;
+
+		    if (buf[0] == 0 || buf[0] == '#' || buf[0] == ' ' || buf[0] == '\t')
+			continue;
+
+		    if (--maxEntries == 0)
+			break;
+
+		    memset(&line, 0, sizeof(line));
+
+#ifdef FEATURE_DEBUG_OPT
+		    if (DebugOpt)
+			crondlog("\111User %s Entry %s\n", fileName, buf);
+#endif
+
+		    /*
+		     * parse date ranges
+		     */
+
+		    ptr = ParseField(file->cf_User, line.cl_Mins, 60, 0, NULL, buf);
+		    ptr = ParseField(file->cf_User, line.cl_Hrs,  24, 0, NULL, ptr);
+		    ptr = ParseField(file->cf_User, line.cl_Days, 32, 0, NULL, ptr);
+		    ptr = ParseField(file->cf_User, line.cl_Mons, 12, -1, MonAry, ptr);
+		    ptr = ParseField(file->cf_User, line.cl_Dow, 7, 0, DowAry, ptr);
+
+		    /*
+		     * check failure
+		     */
+
+		    if (ptr == NULL)
+			continue;
+
+		    /*
+		     * fix days and dow - if one is not * and the other
+		     * is *, the other is set to 0, and vise-versa
+		     */
+
+		    FixDayDow(&line);
+
+		    *pline = calloc(1, sizeof(CronLine));
+		    **pline = line;
+
+		    /*
+		     * copy command
+		     */
+
+		    (*pline)->cl_Shell = strdup(ptr);
+
+#ifdef FEATURE_DEBUG_OPT
+		    if (DebugOpt) {
+			crondlog("\111    Command %s\n", ptr);
+		    }
+#endif
+
+		    pline = &((*pline)->cl_Next);
+		}
+		*pline = NULL;
+
+		file->cf_Next = FileBase;
+		FileBase = file;
+
+		if (maxLines == 0 || maxEntries == 0)
+		    crondlog("\111Maximum number of lines reached for user %s\n", fileName);
+	    }
+	    fclose(fi);
+	}
+    }
+}
+
+static void
+CheckUpdates(void)
+{
+    FILE *fi;
+    char buf[256];
+
+    if ((fi = fopen(CRONUPDATE, "r")) != NULL) {
+	remove(CRONUPDATE);
+	while (fgets(buf, sizeof(buf), fi) != NULL) {
+	    SynchronizeFile(strtok(buf, " \t\r\n"));
+	}
+	fclose(fi);
+    }
+}
+
+static void
+SynchronizeDir(void)
+{
+    /*
+     * Attempt to delete the database.
+     */
+
+    for (;;) {
+	CronFile *file;
+
+	for (file = FileBase; file && file->cf_Deleted; file = file->cf_Next)
+	    ;
+	if (file == NULL)
+	    break;
+	DeleteFile(file->cf_User);
+    }
+
+    /*
+     * Remove cron update file
+     *
+     * Re-chdir, in case directory was renamed & deleted, or otherwise
+     * screwed up.
+     *
+     * scan directory and add associated users
+     */
+
+    remove(CRONUPDATE);
+    if (chdir(CDir) < 0) {
+	crondlog("\311unable to find %s\n", CDir);
+    }
+    {
+	DIR *dir;
+	struct dirent *den;
+
+	if ((dir = opendir("."))) {
+	    while ((den = readdir(dir))) {
+		if (strchr(den->d_name, '.') != NULL)
+		    continue;
+		if (getpwnam(den->d_name))
+		    SynchronizeFile(den->d_name);
+		else
+		    crondlog("\007ignoring %s\n", den->d_name);
+	    }
+	    closedir(dir);
+	} else {
+	    crondlog("\311Unable to open current dir!\n");
+	}
+    }
+}
+
+
+/*
+ *  DeleteFile() - delete user database
+ *
+ *  Note: multiple entries for same user may exist if we were unable to
+ *  completely delete a database due to running processes.
+ */
+
+static void
+DeleteFile(const char *userName)
+{
+    CronFile **pfile = &FileBase;
+    CronFile *file;
+
+    while ((file = *pfile) != NULL) {
+	if (strcmp(userName, file->cf_User) == 0) {
+	    CronLine **pline = &file->cf_LineBase;
+	    CronLine *line;
+
+	    file->cf_Running = 0;
+	    file->cf_Deleted = 1;
+
+	    while ((line = *pline) != NULL) {
+		if (line->cl_Pid > 0) {
+		    file->cf_Running = 1;
+		    pline = &line->cl_Next;
+		} else {
+		    *pline = line->cl_Next;
+		    free(line->cl_Shell);
+		    free(line);
+		}
+	    }
+	    if (file->cf_Running == 0) {
+		*pfile = file->cf_Next;
+		free(file->cf_User);
+		free(file);
+	    } else {
+		pfile = &file->cf_Next;
+	    }
+	} else {
+	    pfile = &file->cf_Next;
+	}
+    }
+}
+
+/*
+ * TestJobs()
+ *
+ * determine which jobs need to be run.  Under normal conditions, the
+ * period is about a minute (one scan).  Worst case it will be one
+ * hour (60 scans).
+ */
+
+static int
+TestJobs(time_t t1, time_t t2)
+{
+    short nJobs = 0;
+    time_t t;
+
+    /*
+     * Find jobs > t1 and <= t2
+     */
+
+    for (t = t1 - t1 % 60; t <= t2; t += 60) {
+	if (t > t1) {
+	    struct tm *tp = localtime(&t);
+	    CronFile *file;
+	    CronLine *line;
+
+	    for (file = FileBase; file; file = file->cf_Next) {
+#ifdef FEATURE_DEBUG_OPT
+		if (DebugOpt)
+		    crondlog("\005FILE %s:\n", file->cf_User);
+#endif
+		if (file->cf_Deleted)
+		    continue;
+		for (line = file->cf_LineBase; line; line = line->cl_Next) {
+#ifdef FEATURE_DEBUG_OPT
+		    if (DebugOpt)
+			crondlog("\005    LINE %s\n", line->cl_Shell);
+#endif
+		    if (line->cl_Mins[tp->tm_min] &&
+			line->cl_Hrs[tp->tm_hour] &&
+			(line->cl_Days[tp->tm_mday] || line->cl_Dow[tp->tm_wday]) &&
+			line->cl_Mons[tp->tm_mon]
+		    ) {
+#ifdef FEATURE_DEBUG_OPT
+			if (DebugOpt)
+			    crondlog("\005    JobToDo: %d %s\n", line->cl_Pid, line->cl_Shell);
+#endif
+			if (line->cl_Pid > 0) {
+			    crondlog("\010    process already running: %s %s\n",
+				file->cf_User,
+				line->cl_Shell
+			    );
+			} else if (line->cl_Pid == 0) {
+			    line->cl_Pid = -1;
+			    file->cf_Ready = 1;
+			    ++nJobs;
+			}
+		    }
+		}
+	    }
+	}
+    }
+    return(nJobs);
+}
+
+static void
+RunJobs(void)
+{
+    CronFile *file;
+    CronLine *line;
+
+    for (file = FileBase; file; file = file->cf_Next) {
+	if (file->cf_Ready) {
+	    file->cf_Ready = 0;
+
+	    for (line = file->cf_LineBase; line; line = line->cl_Next) {
+		if (line->cl_Pid < 0) {
+
+		    RunJob(file->cf_User, line);
+
+		    crondlog("\010USER %s pid %3d cmd %s\n",
+			file->cf_User,
+			line->cl_Pid,
+			line->cl_Shell
+		    );
+		    if (line->cl_Pid < 0)
+			file->cf_Ready = 1;
+		    else if (line->cl_Pid > 0)
+			file->cf_Running = 1;
+		}
+	    }
+	}
+    }
+}
+
+/*
+ * CheckJobs() - check for job completion
+ *
+ * Check for job completion, return number of jobs still running after
+ * all done.
+ */
+
+static int
+CheckJobs(void)
+{
+    CronFile *file;
+    CronLine *line;
+    int nStillRunning = 0;
+
+    for (file = FileBase; file; file = file->cf_Next) {
+	if (file->cf_Running) {
+	    file->cf_Running = 0;
+
+	    for (line = file->cf_LineBase; line; line = line->cl_Next) {
+		if (line->cl_Pid > 0) {
+		    int status;
+		    int r = wait4(line->cl_Pid, &status, WNOHANG, NULL);
+
+		    if (r < 0 || r == line->cl_Pid) {
+			EndJob(file->cf_User, line);
+			if (line->cl_Pid)
+			    file->cf_Running = 1;
+		    } else if (r == 0) {
+			file->cf_Running = 1;
+		    }
+		}
+	    }
+	}
+	nStillRunning += file->cf_Running;
+    }
+    return(nStillRunning);
+}
+
+
+#ifdef CONFIG_FEATURE_CROND_CALL_SENDMAIL
+static void
+ForkJob(const char *user, CronLine *line, int mailFd,
+	const char *prog, const char *cmd, const char *arg, const char *mailf)
+{
+    /*
+     * Fork as the user in question and run program
+     */
+    pid_t pid = fork();
+
+    line->cl_Pid = pid;
+    if (pid == 0) {
+	/*
+	 * CHILD
+	 */
+
+	/*
+	 * Change running state to the user in question
+	 */
+
+	if (ChangeUser(user) < 0)
+	    exit(0);
+
+#ifdef FEATURE_DEBUG_OPT
+	if (DebugOpt)
+	    crondlog("\005Child Running %s\n", prog);
+#endif
+
+	if (mailFd >= 0) {
+	    dup2(mailFd, mailf != NULL);
+	    dup2((mailf ? mailFd : 1), 2);
+	    close(mailFd);
+	}
+	execl(prog, prog, cmd, arg, NULL);
+	crondlog("\024unable to exec, user %s cmd %s %s %s\n", user,
+	    prog, cmd, arg);
+	if(mailf)
+	    fdprintf(1, "Exec failed: %s -c %s\n", prog, arg);
+	exit(0);
+    } else if (pid < 0) {
+	/*
+	 * FORK FAILED
+	 */
+	crondlog("\024couldn't fork, user %s\n", user);
+	line->cl_Pid = 0;
+	if(mailf)
+	    remove(mailf);
+    } else if(mailf) {
+	/*
+	 * PARENT, FORK SUCCESS
+	 *
+	 * rename mail-file based on pid of process
+	 */
+	char mailFile2[128];
+
+	snprintf(mailFile2, sizeof(mailFile2), TMPDIR "/cron.%s.%d",
+				    user, pid);
+	rename(mailf, mailFile2);
+    }
+    /*
+     * Close the mail file descriptor.. we can't just leave it open in
+     * a structure, closing it later, because we might run out of descriptors
+     */
+
+    if (mailFd >= 0)
+	close(mailFd);
+}
+
+static void
+RunJob(const char *user, CronLine *line)
+{
+    char mailFile[128];
+    int mailFd;
+
+    line->cl_Pid = 0;
+    line->cl_MailFlag = 0;
+
+    /*
+     * open mail file - owner root so nobody can screw with it.
+     */
+
+    snprintf(mailFile, sizeof(mailFile), TMPDIR "/cron.%s.%d",
+	     user, getpid());
+    mailFd = open(mailFile, O_CREAT|O_TRUNC|O_WRONLY|O_EXCL|O_APPEND, 0600);
+
+    if (mailFd >= 0) {
+	line->cl_MailFlag = 1;
+	fdprintf(mailFd, "To: %s\nSubject: cron: %s\n\n", user,
+						    line->cl_Shell);
+	line->cl_MailPos = lseek(mailFd, 0, 1);
+    } else {
+	    crondlog("\024unable to create mail file user %s file %s, output to /dev/null\n",
+			user, mailFile);
+    }
+
+    ForkJob(user, line, mailFd, def_sh, "-c", line->cl_Shell, mailFile);
+}
+
+/*
+ * EndJob - called when job terminates and when mail terminates
+ */
+
+static void
+EndJob(const char *user, CronLine *line)
+{
+    int mailFd;
+    char mailFile[128];
+    struct stat sbuf;
+
+    /*
+     * No job
+     */
+
+    if (line->cl_Pid <= 0) {
+	line->cl_Pid = 0;
+	return;
+    }
+
+    /*
+     * End of job and no mail file
+     * End of sendmail job
+     */
+
+    snprintf(mailFile, sizeof(mailFile), TMPDIR "/cron.%s.%d",
+	     user, line->cl_Pid);
+    line->cl_Pid = 0;
+
+    if (line->cl_MailFlag != 1)
+	return;
+
+    line->cl_MailFlag = 0;
+
+    /*
+     * End of primary job - check for mail file.  If size has increased and
+     * the file is still valid, we sendmail it.
+     */
+
+    mailFd = open(mailFile, O_RDONLY);
+    remove(mailFile);
+    if (mailFd < 0) {
+	return;
+    }
+
+    if (fstat(mailFd, &sbuf) < 0 ||
+	sbuf.st_uid != DaemonUid ||
+	sbuf.st_nlink != 0 ||
+	sbuf.st_size == line->cl_MailPos ||
+	!S_ISREG(sbuf.st_mode)
+    ) {
+	close(mailFd);
+	return;
+    }
+    ForkJob(user, line, mailFd, SENDMAIL, SENDMAIL_ARGS, NULL);
+}
+#else
+/* crond whithout sendmail */
+
+static void
+RunJob(const char *user, CronLine *line)
+{
+	/*
+     * Fork as the user in question and run program
+	 */
+    pid_t pid = fork();
+
+    if (pid == 0) {
+	/*
+	 * CHILD
+	 */
+
+	/*
+	 * Change running state to the user in question
+	 */
+
+	if (ChangeUser(user) < 0)
+	    exit(0);
+
+#ifdef FEATURE_DEBUG_OPT
+	if (DebugOpt)
+	    crondlog("\005Child Running %s\n", def_sh);
+#endif
+
+	execl(def_sh, def_sh, "-c", line->cl_Shell, NULL);
+	crondlog("\024unable to exec, user %s cmd %s -c %s\n", user,
+	    def_sh, line->cl_Shell);
+	exit(0);
+    } else if (pid < 0) {
+	/*
+	 * FORK FAILED
+	 */
+	crondlog("\024couldn't fork, user %s\n", user);
+	pid = 0;
+    }
+    line->cl_Pid = pid;
+}
+#endif /* CONFIG_FEATURE_CROND_CALL_SENDMAIL */