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#!/usr/bin/perl
# **** License ****
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# 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.
#
# This code was originally developed by Vyatta, Inc.
# Portions created by Vyatta are Copyright (C) 2007 Vyatta, Inc.
# All Rights Reserved.
#
# **** End License ****
use strict;
use lib "/opt/vyatta/share/perl5";
use Vyatta::Config;
# handle "user"
my $uconfig = new Vyatta::Config;
$uconfig->setLevel("system login user");
my %users = $uconfig->listNodeStatus();
my @user_keys = sort keys %users;
if ( ( scalar(@user_keys) <= 0 )
|| !( grep /^root$/, @user_keys )
|| ( $users{'root'} eq 'deleted' ) )
{
# root is deleted
die "User \"root\" cannot be deleted\n";
}
# Exit codes form useradd.8 man page
my %reasons = (
0 => 'success',
1 => 'can´t update password file',
2 => 'invalid command syntax',
3 => 'invalid argument to option',
4 => 'UID already in use (and no -o)',
6 => 'specified group doesn´t exist',
9 => 'username already in use',
10 => 'can´t update group file',
12 => 'can´t create home directory',
13 => 'can´t create mail spool',
);
# Map of level to additional groups
my %level_map = (
'admin' => [ 'quaggavty', 'vyattacfg', 'sudo', 'adm', 'dip', 'disk'],
'operator' => [ 'quaggavty', 'operator', 'adm', 'dip', ],
);
# Construct a map from existing users to group membership
# Use space seperated format
my %group_map;
while (my ($name, undef, undef, $members) = getgrent()) {
foreach my $user (split / /,$members) {
my $g = $group_map{$user};
if ($g) {
my @l = split / /, $g;
push @l, $name;
$group_map{$user} = join(' ', sort @l);
} else {
$group_map{$user} = $name;
}
}
}
# we have some users
for my $user (@user_keys) {
if ( $users{$user} eq 'deleted' ) {
system("sudo userdel -r '$user'") == 0
or die "userdel failed: $?\n"
}
elsif ( $users{$user} eq 'added' || $users{$user} eq 'changed' ) {
$uconfig->setLevel("system login user $user");
my $pwd = $uconfig->returnValue('authentication encrypted-password');
$pwd or die "Encrypted password not in configuration for $user";
my $level = $uconfig->returnValue('level');
$level or die "Level not defined for $user";
# map level to group membership
my @groups = @{$level_map{$level}};
# add any additional groups from configuration
push( @groups, $uconfig->returnValues('group') );
my $fname = $uconfig->returnValue('full-name');
my $home = $uconfig->returnValue('home-directory');
# Read existing settings
my (undef, $opwd, $uid, $gid, undef, $comment,
undef, $dir, $shell, undef) = getpwnam($user);
my $cmd;
# not found in existing passwd, must be new
if ( !defined $uid ) {
# make new user using vyatta shell
# and make home directory (-m)
# and with default group of 100 (users)
$cmd = 'useradd -s /bin/vbash -m -N';
} else {
# If no part of password or group file changed
# then there is nothing to do here.
next if ( $opwd eq $pwd &&
(!$fname || $fname eq $comment) &&
(!$home || $home eq $dir) &&
join(' ', sort @groups) eq $group_map{$user} );
$cmd = "usermod";
}
$cmd .= " -p '$pwd'";
$cmd .= " -c \"$fname\"" if ( defined $fname );
$cmd .= " -d \"$home\"" if ( defined $home );
$cmd .= ' -G ' . join( ',', @groups );
system("sudo $cmd $user");
next if ($? == 0);
my $reason = $reasons{($? >> 8)};
die "Attempt to change user $user failed: $reason\n";
}
}
exit 0;
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