+#!/usr/bin/perl
+
+# Copyright (c) 2010 Peter Palfrader
+
+# Resets the password for a kerberos principal given on the command line.
+# If the principal does not exist, try to create them.
+
+use strict;
+use Heimdal::Kadm5;
+use Getopt::Long;
+use English;
+use String::Random;
+
+my $USAGE = "Usage: $PROGRAM_NAME [--admin=<admin>] [--keytab=<file>] <principal>\n";
+
+sub getname() {
+ my $username = getpwuid($UID);
+ die "Cannot get current username\n" unless defined $username;
+ return $username;
+};
+
+my $params;
+Getopt::Long::config('bundling');
+GetOptions (
+ '--help' => \$params->{'help'},
+ '--admin=s' => \$params->{'admin'},
+ '--keytab=s' => \$params->{'keytab'},
+) or die ($USAGE);
+
+if ($params->{'help'}) {
+ print $USAGE;
+ exit (0);
+};
+
+die $USAGE if (scalar @ARGV != 1);
+my $name = shift @ARGV;
+
+unless (defined $params->{'admin'}) {
+ $params->{'admin'} = getname().'/admin';
+};
+unless (defined $params->{'keytab'}) {
+ $params->{'keytab'} = '/etc/userdir-ldap/keytab.'.getname();
+};
+
+my $client = Heimdal::Kadm5::Client->new(
+ Principal => $params->{'admin'},
+ Keytab => $params->{'keytab'}
+ );
+die "Unable to get Heimdal Client object.\n" unless defined $client;
+
+
+my $password = '844u6MrG0gTS';
+
+my $rnd = new String::Random;
+my $password = $rnd->randregex('[a-zA-Z0-9]{16}');
+
+my $principal = $client->getPrincipal($name);
+unless (defined $principal) {
+ print "Principal appears to not exist. Trying to add.\n";
+ $principal = $client->makePrincipal($name);
+ my $ret = $client->createPrincipal($principal, $password, undef);
+ die "Failed to create principal $name.\n" unless ($ret);
+ print "Created principal $name with password '$password'.\n";
+} else {
+ my $ret = $client->changePassword($name, $password);
+ die "Failed to change password for $name.\n" unless ($ret);
+ print "Changed password of principal $name to '$password'.\n";
+};