ikiwiki-update-wikilist

   1 #!/usr/bin/perl -t
   2 # Add a user to the system wide wikilist.
   3 # This script can safely be made suid.
   4 use warnings;
   5 use strict;
   6 use English;
   7
   8 my $remove=(@ARGV && $ARGV[0] eq '-r');
   9
  10 my $username=getpwuid($REAL_USER_ID);
  11 if (! defined $username || ! length $username) {
  12         die "unable to determine user name for UID $REAL_USER_ID\n";
  13 }
  14
  15 my $wikilist="/etc/ikiwiki/wikilist";
  16 if (! -e $wikilist) {
  17         die "$wikilist does not exist\n";
  18 }
  19
  20 my $changed=0;
  21 my $seen=0;
  22 my @lines;
  23 open (my $list, "<$wikilist") || die "read $wikilist: $!";
  24 while (<$list>) {
  25         chomp;
  26         if (/^\s*([^\s]+)\s*$/) {
  27                 my $user=$1;
  28                 if ($user eq $username) {
  29                         if (! $remove) {
  30                                 $seen=1;
  31                                 push @lines, $_;
  32                         }
  33                 }
  34                 else {
  35                         push @lines, $_;
  36                 }
  37         }
  38         else {
  39                 push @lines, $_;
  40         }
  41 }
  42 if (! $seen && ! $remove) {
  43         push @lines, $username;
  44         $changed=1;
  45 }
  46 if ($changed) {
  47         close $list || die "ikiwiki-update-wikilist: error reading $list: $!\n";
  48         open ($list, ">$wikilist") || die "ikiwiki-update-wikilist: cannot write to $wikilist\n";
  49         foreach (@lines) {
  50                 print $list "$_\n";
  51         }
  52         if ($remove) {
  53                 print "ikiwiki-update-wikilist: removed user $username from $wikilist\n";
  54         }
  55         else {
  56                 print "ikiwiki-update-wikilist: added user $username to $wikilist\n";
  57         }
  58         close $list || die "ikiwiki-update-wikilist: error writing $wikilist: $!\n";
  59 }
  60 else {
  61         print "ikiwiki-update-wikilist: no changes need to be made\n";
  62 }