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- Allow updates to LON-CAPA cron in /etc/cron.d/loncapa
- Preserve local customizations in timing/frequency of any standard comands run by cron.

    1: <!DOCTYPE piml PUBLIC "-//TUX/DTD piml 1.0 Final//EN" 
    2: 	"http://lpml.sourceforge.net/DTD/piml.dtd">
    3: <!-- cron_lpmlcheck.piml -->
    4: <!-- Matthew Hall -->
    5: 
    6: <!-- $Id: cron_lpmlcheck.piml,v 1.2 2010/05/23 16:07:09 raeburn Exp $ -->
    7: 
    8: <!--
    9: 
   10: This file is part of the LearningOnline Network with CAPA (LON-CAPA).
   11: 
   12: LON-CAPA is free software; you can redistribute it and/or modify
   13: it under the terms of the GNU General Public License as published by
   14: the Free Software Foundation; either version 2 of the License, or
   15: (at your option) any later version.
   16: 
   17: LON-CAPA is distributed in the hope that it will be useful,
   18: but WITHOUT ANY WARRANTY; without even the implied warranty of
   19: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   20: GNU General Public License for more details.
   21: 
   22: You should have received a copy of the GNU General Public License
   23: along with LON-CAPA; if not, write to the Free Software
   24: Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   25: 
   26: /home/httpd/html/adm/gpl.txt
   27: 
   28: http://www.lon-capa.org/
   29: 
   30: -->
   31: 
   32: <piml>
   33: <targetroot>/</targetroot>
   34: <files>
   35: <file>
   36: <target dist="default">/home/httpd/lonUsers</target>
   37: <perlscript mode="fg">
   38: if (-e '/etc/cron.d/loncapa.lpmlsave') {
   39:     unlink ('/etc/cron.d/loncapa.lpmlsave');
   40: }
   41: print "\nUpdating /etc/cron.d/loncapa configuration file\n";
   42: my (@configs,@commands,@standard,%checked,%custom,%customargs);
   43: my $count = 0;
   44: my $changes = 0;
   45: if (open(my $locfh,"&lt;/home/httpd/lib/perl/loncapa_cron-std")) {
   46:     while (&lt;$locfh&gt;) {
   47:         my $line = $_;
   48:         chomp($line);
   49:         $standard[$count] = $line;
   50:         if ($line =~ m{^#?\s*\d+[^/]+/}) {
   51:             my ($config,$script) = split('/',$line,2);
   52:             $script =~ s/\s+$//;
   53:             my ($cmd,@args) = split(/\s+/,$script);
   54:             $commands[$count] = &escape('/'.$cmd);
   55:             $configs[$count] = $config;
   56:         }
   57:         $standard[$count] = $line;
   58:         $count ++;
   59:     }
   60:     close($locfh);
   61:     if (open(my $stdfh,"&lt;/etc/cron.d/loncapa")) {
   62:         while(&lt;$stdfh&gt;) {
   63:             my $line = $_;
   64:             chomp($line);
   65:             if ($line =~ m{#?\s*\d+[^/]+/}) {
   66:                 my ($config,$script) = split('/',$line,2);
   67:                 $script =~ s/\s+$//;
   68:                 my ($cmd,@args) = split(/\s+/,$script);
   69:                 my $key = &escape('/'.$cmd);
   70:                 $custom{$key} = $config;
   71:                 $customargs{$key} = \@args;
   72:             }
   73:         }
   74:     }
   75:     if (open(my $newfh,"&gt;/etc/cron.d/loncapa")) {
   76:         for (my $i=0; $i<@standard; $i++) {
   77:             if ($commands[$i] ne '') {
   78:                 my $unesc = &unescape($commands[$i]);
   79:                 if ($custom{$commands[$i]} ne $configs[$i]) {
   80:                     print $newfh $custom{$commands[$i]}.$unesc;
   81:                     if (ref($customargs{$commands[$i]}) eq 'ARRAY') {
   82:                         if (@{$customargs{$commands[$i]}} > 0) {
   83:                             print $newfh ' '.join(' ',@{$customargs{$commands[$i]}});
   84:                         }
   85:                     }
   86:                     print $newfh "\n";
   87:                     $changes ++;
   88:                 } else {
   89:                     print $newfh $standard[$i]."\n";
   90:                 }
   91:                 $checked{$commands[$i]} = 1;
   92:             } else {
   93:                 print $newfh $standard[$i]."\n";
   94:             }
   95:         }
   96:         foreach my $key (sort(keys(%custom))) {
   97:             unless ($checked{$key}) {
   98:                 my $unesc = &unescape($key);
   99:                 print $newfh $custom{$key}.$unesc;
  100:                 if (ref($customargs{$key}) eq 'ARRAY') {
  101:                     if (@{$customargs{$key}} > 0) {
  102:                         print $newfh ' '.join(' ',@{$customargs{$key}});
  103:                     }
  104:                 }
  105:                 print $newfh "\n";
  106:             }
  107:         }
  108:         close($newfh);
  109:     }
  110: }
  111: if ($changes&gt;1) {
  112:     print "$changes customized lines preserved in /etc/cron.d/loncapa\n"; 
  113: } elsif ($changes==1) {
  114:     print "One customized line preserved in /etc/cron.d/loncapa\n"; 
  115: }
  116: 
  117: sub escape {
  118:     my $str=shift;
  119:     $str =~ s/(\W)/"%".unpack('H2',$1)/eg;
  120:     return $str;
  121: }
  122: 
  123: sub unescape {
  124:     my $str=shift;
  125:     $str =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
  126:     return $str;
  127: }
  128: </perlscript>
  129: </file>
  130: </files>
  131: </piml>