#
# Copyright (c) 1998 - Dirk Koopman G1TLH
#
-# $Id$
+#
#
package DXCron;
+use DXVars;
use DXUtil;
use DXM;
use DXDebug;
-use Carp;
+use IO::File;
use strict;
+use vars qw{@crontab @lcrontab @scrontab $mtime $lasttime $lastmin};
+
+$mtime = 0;
+$lasttime = 0;
+$lastmin = 0;
+
+
+my $fn = "$main::cmd/crontab";
+my $localfn = "$main::localcmd/crontab";
+
# cron initialisation / reading in cronjobs
sub init
{
+ if ((-e $localfn && -M $localfn < $mtime) || (-e $fn && -M $fn < $mtime) || $mtime == 0) {
+ my $t;
+
+ # first read in the standard one
+ if (-e $fn) {
+ $t = -M $fn;
+
+ @scrontab = cread($fn);
+ $mtime = $t if !$mtime || $t <= $mtime;
+ }
+
+ # then read in any local ones
+ if (-e $localfn) {
+ $t = -M $localfn;
+
+ @lcrontab = cread($localfn);
+ $mtime = $t if $t <= $mtime;
+ }
+ @crontab = (@scrontab, @lcrontab);
+ }
+}
+
+# read in a cron file
+sub cread
+{
+ my $fn = shift;
+ my $fh = new IO::File;
+ my $line = 0;
+ my @out;
+
+ dbg("cron: reading $fn\n") if isdbg('cron');
+ open($fh, $fn) or confess("cron: can't open $fn $!");
+ while (<$fh>) {
+ $line++;
+ chomp;
+ next if /^\s*#/o or /^\s*$/o;
+ my ($min, $hour, $mday, $month, $wday, $cmd) = /^\s*(\S+)\s+(\S+)\s+(\S+)\s+(\S+)\s+(\S+)\s+(.+)$/o;
+ next unless defined $min;
+ my $ref = bless {};
+ my $err;
+
+ $err |= parse($ref, 'min', $min, 0, 60);
+ $err |= parse($ref, 'hour', $hour, 0, 23);
+ $err |= parse($ref, 'mday', $mday, 1, 31);
+ $err |= parse($ref, 'month', $month, 1, 12, "jan", "feb", "mar", "apr", "may", "jun", "jul", "aug", "sep", "oct", "nov", "dec");
+ $err |= parse($ref, 'wday', $wday, 0, 6, "sun", "mon", "tue", "wed", "thu", "fri", "sat");
+ if (!$err) {
+ $ref->{cmd} = $cmd;
+ push @out, $ref;
+ dbg("cron: adding $_\n") if isdbg('cron');
+ } else {
+ dbg("cron: error on line $line '$_'\n") if isdbg('cron');
+ }
+ }
+ close($fh);
+ return @out;
+}
+
+sub parse
+{
+ my $ref = shift;
+ my $sort = shift;
+ my $val = shift;
+ my $low = shift;
+ my $high = shift;
+ my @req;
+
+ # handle '*' values
+ if ($val eq '*') {
+ $ref->{$sort} = 0;
+ return 0;
+ }
+ # handle comma delimited values
+ my @comma = split /,/o, $val;
+ for (@comma) {
+ my @minus = split /-/o;
+ if (@minus == 2) {
+ return 1 if $minus[0] < $low || $minus[0] > $high;
+ return 1 if $minus[1] < $low || $minus[1] > $high;
+ my $i;
+ for ($i = $minus[0]; $i <= $minus[1]; ++$i) {
+ push @req, 0 + $i;
+ }
+ } else {
+ return 1 if $_ < $low || $_ > $high;
+ push @req, 0 + $_;
+ }
+ }
+ $ref->{$sort} = \@req;
+
+ return 0;
}
# process the cronjobs
sub process
{
+ my $now = $main::systime;
+ return if $now-$lasttime < 1;
+
+ my ($sec, $min, $hour, $mday, $mon, $wday) = (gmtime($now))[0,1,2,3,4,6];
+ # are we at a minute boundary?
+ if ($min != $lastmin) {
+
+ # read in any changes if the modification time has changed
+ init();
+
+ $mon += 1; # months otherwise go 0-11
+ my $cron;
+ foreach $cron (@crontab) {
+ if ((!$cron->{min} || grep $_ eq $min, @{$cron->{min}}) &&
+ (!$cron->{hour} || grep $_ eq $hour, @{$cron->{hour}}) &&
+ (!$cron->{mday} || grep $_ eq $mday, @{$cron->{mday}}) &&
+ (!$cron->{mon} || grep $_ eq $mon, @{$cron->{mon}}) &&
+ (!$cron->{wday} || grep $_ eq $wday, @{$cron->{wday}}) ){
+
+ if ($cron->{cmd}) {
+ dbg("cron: $min $hour $mday $mon $wday -> doing '$cron->{cmd}'") if isdbg('cron');
+ eval "$cron->{cmd}";
+ dbg("cron: cmd error $@") if $@ && isdbg('cron');
+ }
+ }
+ }
+ }
+
+ # remember when we are now
+ $lasttime = $now;
+ $lastmin = $min;
+}
+
+#
+# these are simple stub functions to make connecting easy in DXCron contexts
+#
+
+# is it locally connected?
+sub connected
+{
+ my $call = uc shift;
+ return DXChannel::get($call);
+}
+
+# is it remotely connected anywhere (with exact callsign)?
+sub present
+{
+ my $call = uc shift;
+ return Route::get($call);
+}
+
+# is it remotely connected anywhere (ignoring SSIDS)?
+sub presentish
+{
+ my $call = uc shift;
+ my $c = Route::get($call);
+ unless ($c) {
+ for (1..15) {
+ $c = Route::get("$call-$_");
+ last if $c;
+ }
+ }
+ return $c;
}
+# is it remotely connected anywhere (with exact callsign) and on node?
+sub present_on
+{
+ my $call = uc shift;
+ my $ncall = uc shift;
+ my $node = Route::Node::get($ncall);
+ return ($node) ? grep $call eq $_, $node->users : undef;
+}
+
+# is it remotely connected (ignoring SSIDS) and on node?
+sub presentish_on
+{
+ my $call = uc shift;
+ my $ncall = uc shift;
+ my $node = Route::Node::get($ncall);
+ my $present;
+ if ($node) {
+ $present = grep {/^$call/ } $node->users;
+ }
+ return $present;
+}
+
+# last time this thing was connected
+sub last_connect
+{
+ my $call = uc shift;
+ return $main::systime if DXChannel::get($call);
+ my $user = DXUser::get($call);
+ return $user ? $user->lastin : 0;
+}
+
+# disconnect a locally connected thing
+sub disconnect
+{
+ my $call = shift;
+ run_cmd("disconnect $call");
+}
+
+# start a connect process off
+sub start_connect
+{
+ my $call = shift;
+ # connecting is now done in one place - Yeah!
+ run_cmd("connect $call");
+}
+
+# spawn any old job off
+sub spawn
+{
+ my $line = shift;
+
+ my $pid = fork();
+ if (defined $pid) {
+ if (!$pid) {
+ # in child, unset warnings, disable debugging and general clean up from us
+ $^W = 0;
+ eval "{ package DB; sub DB {} }";
+ DXChannel::closeall();
+ for (@main::listeners) {
+ $_->close_server;
+ }
+ unless ($main::is_win) {
+ $SIG{HUP} = 'IGNORE';
+ $SIG{CHLD} = $SIG{TERM} = $SIG{INT} = $SIG{__WARN__} = 'DEFAULT';
+ alarm(0);
+ }
+ exec "$line" or dbg("exec '$line' failed $!") if isdbg('cron');
+ }
+ dbg("spawn of $line started") if isdbg('cron');
+ } else {
+ dbg("can't fork for $line $!") if isdbg('cron');
+ }
+
+ # coordinate
+ sleep(1);
+}
+
+# do an rcmd to another cluster from the crontab
+sub rcmd
+{
+ my $call = uc shift;
+ my $line = shift;
+
+ # can we see it? Is it a node?
+ my $noderef = Route::Node::get($call);
+ return unless $noderef && $noderef->version;
+
+ # send it
+ DXProt::addrcmd($main::me, $call, $line);
+}
+
+sub run_cmd
+{
+ my $line = shift;
+ my @in = DXCommandmode::run_cmd($main::me, $line);
+ dbg("cmd run: $line") if isdbg('cron');
+ for (@in) {
+ s/\s*$//og;
+ dbg("cmd out: $_") if isdbg('cron');
+ }
+}
1;
__END__
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