path: root/ikiwiki-update-wikilist

#!/usr/bin/perl -t
# Add a user to the system wide wikilist.
# This script can safely be made suid.
use warnings;
use strict;
use English;

my $remove=(@ARGV && $ARGV[0] eq '-r');

my $username=getpwuid($REAL_USER_ID);
if (! defined $username || ! length $username) {
    die "unable to determine user name for UID $REAL_USER_ID\n";
}

my $wikilist="/etc/ikiwiki/wikilist";
if (! -e $wikilist) {
    die "$wikilist does not exist\n";
}

my $changed=0;
my $seen=0;
my @lines;
open (my $list, "<$wikilist") || die "read $wikilist: $!";
while (<$list>) {
    chomp;
    if (/^\s*([^\s]+)\s*$/) {
        my $user=$1;
        if ($user eq $username) {
            if (! $remove) {
                $seen=1;
                push @lines, $_;
            }
        }
        else {
            push @lines, $_;
        }
    }
    else {
        push @lines, $_;
    }
}
if (! $seen && ! $remove) {
    push @lines, $username;
    $changed=1;
}
if ($changed) {
    close $list || die "ikiwiki-update-wikilist: error reading $list: $!\n";
    open ($list, ">$wikilist") || die "ikiwiki-update-wikilist: cannot write to $wikilist\n";
    foreach (@lines) {
        print $list "$_\n";
    }
    if ($remove) {
        print "ikiwiki-update-wikilist: removed user $username from $wikilist\n";
    }
    else {
        print "ikiwiki-update-wikilist: added user $username to $wikilist\n";
    }
    close $list || die "ikiwiki-update-wikilist: error writing $wikilist: $!\n";
}
else {
    print "ikiwiki-update-wikilist: no changes need to be made\n";
}