#!/usr/bin/perl
-use File::Basename;
+use Getopt::Long;
+use Cwd qw/abs_path/;
+use POSIX qw/setsid setuid setgid/;
use strict;
+my ($nodaemon, $verbose, $pidfile, $logfile, $user, $group, $uid, $gid);
+$pidfile = '/var/run/runcheckdir.pid';
+$logfile = '/var/log/runcheckdir.log';
-my $dir = shift;
-unless (-d $dir) {
- print "Arg is not a directory";
+GetOptions(
+ "nodaemon" => \$nodaemon,
+ "verbose" => \$verbose,
+ "pidfile=s" => \$pidfile,
+ "logfile=s" => \$logfile,
+ "user=s" => \$user,
+ "group=s" => \$group,
+);
+
+my $dir = abs_path(shift);
+unless ($dir) {
+ print "No directory specified\n";
exit 1;
}
-my $me = basename $dir;
-my ($status, $details);
-
-sub do_command {
- my $command = shift;
- $command =~ /^(\w+)(\s+(.*))?$/;
- my ($do, $args) = ($1, $3);
- if ($do eq 'mail') {
- open MAIL, '|-', qq!mail -s "$me $status" $args! or die "Could not mail";
- print MAIL $details,"\n";
- close MAIL;
- } elsif ($do eq 'exec') {
- system($args);
- } elsif ($do eq 'pipe') {
- open PIPE, '|-', $args;
- print PIPE "$status\n";
- print PIPE $details;
- close PIPE;
- }
+unless (-d $dir) {
+ print "$dir is not a directory\n";
+ exit 1;
}
+$uid = (getpwnam($user))[2] if $user;
+$gid = (getpwnam($group))[3] if $group;
-my ($checkcommand, %on);
-$on{success} = [];
-$on{failure} = [];
-$on{change} = [];
+sub daemonize {
+ if (fork()) {
+ exit 0;
+ }
+ setsid();
-open CONFIG, "$dir/check";
-while (<CONFIG>) {
- my @words = split(/\s+/);
- my $command = shift @words;
- if ($command eq 'check') {
- $checkcommand = join(' ', @words);
- } elsif ($command eq 'on') {
- my $when = shift @words;
- if ($when eq 'failure') {
- push @{$on{failure}}, join(' ', @words);
- } elsif ($when eq 'success') {
- push @{$on{success}}, join(' ', @words);
- } elsif ($when eq 'change') {
- push @{$on{change}}, join(' ', @words);
- } else {
- print "Unknown event in 'on', $dir/check line $.\n";
- }
+ umask 027;
+ if (open STDOUT, ">>$logfile") {
+ open STDERR, ">>$logfile";
+ chown $uid, $gid, $logfile;
} else {
- print "Unknown command '$command', $dir/check line $.\n";
+ print "WARNING: Could not open logfile. You will get NO error output.\n";
+ open STDOUT, ">/dev/null";
+ open STDERR, ">/dev/null";
}
-}
-close CONFIG;
+ open STDIN, "/dev/null";
-unless ($checkcommand) {
- print "Check command not specified in $dir/check\n";
- exit 1;
-}
-unless (@{$on{failure}} || @{$on{success}} || @{$on{change}}) {
- print "No actions specified in $dir/check. This is probably a mistake.\n";
+ open PID, ">$pidfile" or warn "Could not write PID file\n";
+ print PID "$$\n";
+ close PID;
+ chown $uid, $gid, $pidfile;
+
+ chdir '/';
+ print "Daemon started at ",scalar gmtime(),"\n";
}
-open STATUS, "$dir/checkstatus";
-chomp(my $oldstatus = <STATUS>);
-close STATUS;
+daemonize unless $nodaemon;
-open CHECK, '-|', $checkcommand;
-$status = <CHECK>;
-$details = join('', <CHECK>);
-close CHECK;
-my $exitstatus = $? >> 8;
+setuid($uid) if $uid;
+setgid($uid) if $gid;
-if ($exitstatus == 0) {
- foreach my $command (@{$on{success}}) {
- do_command $command;
- }
-} else {
- foreach my $command (@{$on{failure}}) {
- do_command $command;
- }
-}
-if ($exitstatus != $oldstatus) {
- foreach my $command(@{$on{change}}) {
- do_command $command;
+$|++;
+
+while (1) {
+ opendir(CHECKS, $dir);
+ while (my $d = readdir(CHECKS)) {
+ next if (! -d "$dir/$d" || $d eq '.' || $d eq '..');
+ unless (-f "$dir/$d/check") {
+ print "No check script in $dir/$d\n";
+ next;
+ }
+ print "Running check $dir/$d: ";
+ system("runcheck $dir/$d");
+ my $exitstatus = $? >> 8;
+ if ($exitstatus) {
+ print "FAILURE\n";
+ } else {
+ print "OK\n";
+ }
+ sleep 10;
}
+ closedir(CHECKS);
}
-
-open STATUS, ">$dir/checkstatus";
-print STATUS "$exitstatus\n";
-print STATUS "$status\n";
-print STATUS "$details\n";
-close STATUS;