#!/usr/bin/perl

use Lemonldap::NG::Common::Conf;
use Lemonldap::NG::Common::Conf::Constants;
use Data::Dumper;
use English qw(-no_match_vars);
use File::Temp;
use POSIX qw(setuid setgid);
use strict;

eval {
    setgid( ( getgrnam('__APACHEGROUP__') )[2] );
    setuid( ( getpwnam('__APACHEUSER__') )[2] );
    print STDERR "Running as uid $EUID and gid $EGID\n";
};

if ( $EUID == 0 ) {
    print STDERR
      "$0 must not be launched as root since local cache can be corrupted\n"
      . "Continue (y/N)? ";
    my $res = <STDIN>;
    exit 1 unless ( $res =~ /^y/i );
}

my $conf = Lemonldap::NG::Common::Conf->new();

unless ($conf) {
    print STDERR $Lemonldap::NG::Common::Conf::msg;
    exit 1;
}

my $tmp = $conf->getConf();
delete $tmp->{reVHosts};
delete $tmp->{cipher};
delete $tmp->{cfgAuthor};
delete $tmp->{cfgAuthorIP};
delete $tmp->{cfgDate};
$tmp = Dumper($tmp);
my $refFile  = File::Temp->new( UNLINK => 1 );
my $editFile = File::Temp->new( UNLINK => 1 );
print $refFile $tmp;
print $editFile $tmp;
close $refFile;
close $editFile;

system "editor $editFile";

if (`diff $refFile $editFile`) {
    my $VAR1;
    my $buf;

    # Check if the new configuration hash is valid
    open F1, $editFile->filename();
    while (<F1>) {
        $buf .= $_;
    }
    eval $buf;
    die $EVAL_ERROR if $EVAL_ERROR;

    # Update author and date
    $VAR1->{cfgAuthor}   = "lmConfigEditor";
    $VAR1->{cfgAuthorIP} = "localhost";
    $VAR1->{cfgDate}     = time();

    # Store new configuration
    my $res = $conf->saveConf($VAR1);
    if ( $res > 0 ) {
        print STDERR "Configuration $res saved\n";
    }
    else {
        print STDERR "Configuration was not saved:\n  ";
        if ( $res == CONFIG_WAS_CHANGED ) {
            print STDERR "Configuration has changed\n";
        }
        elsif ( $res == DATABASE_LOCKED ) {
            print STDERR "Configuration database is or can nor be locked\n";
        }
        elsif ( $res == UPLOAD_DENIED ) {
            print STDERR "You're not authorized to save this configuration\n";
        }
        elsif ( $res == SYNTAX_ERROR ) {
            print STDERR "Syntax error in your configuration\n";
        }
        elsif ( $res == UNKNOWN_ERROR ) {
            print STDERR "Unknown error\n";
        }
    }
}
else {
    print STDERR "Configuration not changed\n";
}