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# $Id: Passwd.pm,v 1.8 2002/06/12 15:34:35 mchasal Exp $
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
# Copyright 2001 International Business Machines
#
# Sean Dague <japh@us.ibm.com>
package SystemInstaller::Passwd;
use Carp;
use Data::Dumper;
use strict;
use base qw(Exporter);
use vars qw($VERSION @EXPORT @EXPORT_OK %EXPORT_TAGS);
$VERSION = sprintf("%d.%02d", q$Revision: 1.8 $ =~ /(\d+)\.(\d+)/);
@EXPORT_OK = qw(update_user);
%EXPORT_TAGS = (
'all' => [@EXPORT_OK],
);
sub update_user {
my %vars = (
imagepath => undef,
user => undef,
password => undef,
@_,
);
foreach my $required (qw(imagepath user password)) {
if (!$vars{$required}) {
carp("Required variable $required not provided");
return undef;
}
}
my $cryptpw = _cryptpasswd($vars{password});
if (system("chroot $vars{imagepath} usermod -p $cryptpw $vars{user}")) {
carp("Failed to set password for user $vars{user}");
return undef;
}
return
}
sub _cryptpasswd {
my $passwd = shift;
my $salt = shift;
# The next line is straight from pg 695 of Camel 3
$salt ||= join '', ('.', '/', 0..9, 'A'..'Z', 'a'..'z')[rand 64, rand 64];
crypt $passwd, $salt;
}
=head1 NAME
SystemInstaller::Passwd - a library to modify passwd files from Perl
=head1 SYNOPSIS
use SystemInstaller::Passwd qw(update_user);
update_user(
imagepath => '/var/lib/systemimager/image/image1',
user => 'root',
password => 'yourmoma'
);
=head1 DESCRIPTION
This library uses the usermod command to set the password for
a user within an image. They password given is encrypted using
crypt and then passed to usermod.
=head1 METHODS
=over 4
=item B<update_user(%variables)>
=back
=head1 AUTHORS
Sean Dague <japh@us.ibm.com>, Michael Chase-Salerno <mchasal@users.sf.net>
=head1 SEE ALSO
crypt(3), usermod(8), perl(1)
=head1 COPYRIGHT
Copyright 2001 International Business Machines
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
=head1 CHANGELOG
$Log: Passwd.pm,v $
Revision 1.8 2002/06/12 15:34:35 mchasal
Use usermod for password setting.
Revision 1.7 2001/10/09 15:36:57 sdague
added better error messages if password files can't be opened
Revision 1.6 2001/09/04 17:04:22 sdague
updated shadow passwd fields
Revision 1.5 2001/08/31 17:51:08 sdague
added some more stub documentation
Revision 1.4 2001/08/31 17:46:43 sdague
added version and changelog to SystemInstaller::Passwd
=cut
1;
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