Add ud-krb-reset, and make ud-mailgate call it when receiving a mail at chpasswd...

[mirror/userdir-ldap.git] / ud-krb-reset

diff --git a/ud-krb-reset b/ud-krb-reset
new file mode 100755 (executable)
index 0000000..d7e2eff
--- /dev/null
+++ b/ud-krb-reset
@@ -0,0 +1,68 @@
+#!/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";
+};