141 lines
3.1 KiB
Perl
141 lines
3.1 KiB
Perl
package Lemonldap::NG::Common::Conf::Backends::YAMLFile;
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use strict;
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use Lemonldap::NG::Common::Conf::Constants; #inherits
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use YAML qw();
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use Encode;
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our $VERSION = '2.1.0';
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our $initDone;
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$YAML::Numify = 1;
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sub Lemonldap::NG::Common::Conf::_yamlLock {
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my ( $self, $cfgNum ) = @_;
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return "$self->{dirName}/lmConf.yamlLock";
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}
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sub Lemonldap::NG::Common::Conf::_yamlFile {
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my ( $self, $cfgNum ) = @_;
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return "$self->{dirName}/lmConf-$cfgNum.yaml";
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}
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sub prereq {
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my $self = shift;
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unless ( $self->{dirName} ) {
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$Lemonldap::NG::Common::Conf::msg .=
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"'dirName' is required in 'File' configuration type ! \n";
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return 0;
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}
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unless ( -d $self->{dirName} ) {
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$Lemonldap::NG::Common::Conf::msg .=
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"Directory \"$self->{dirName}\" does not exist ! \n";
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return 0;
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}
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1;
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}
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sub available {
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my $self = shift;
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opendir D, $self->{dirName};
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my @conf = readdir(D);
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closedir D;
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@conf =
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sort { $a <=> $b }
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map { /lmConf-(\d+)\.yaml/ ? ( $1 + 0 ) : () } @conf;
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return @conf;
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}
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sub lastCfg {
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my $self = shift;
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my @avail = $self->available;
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return $avail[$#avail];
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}
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sub lock {
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my $self = shift;
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if ( $self->isLocked ) {
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sleep 2;
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return 0 if ( $self->isLocked );
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}
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unless ( open F, ">" . $self->_yamlLock ) {
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$Lemonldap::NG::Common::Conf::msg .=
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"Unable to lock (" . $self->_yamlLock . ") \n";
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return 0;
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}
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print F $$;
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close F;
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return 1;
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}
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sub isLocked {
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my $self = shift;
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-e $self->_yamlLock;
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}
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sub unlock {
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my $self = shift;
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unlink $self->_yamlLock;
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1;
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}
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sub store {
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my ( $self, $fields ) = @_;
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my $mask = umask;
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umask( oct('0027') );
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unless ( open FILE, '>', $self->_yamlFile( $fields->{cfgNum} ) ) {
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$Lemonldap::NG::Common::Conf::msg = "Open file failed: $! \n";
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$self->unlock;
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return UNKNOWN_ERROR;
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}
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binmode(FILE);
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my $f = YAML::Dump($fields);
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print FILE $f;
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close FILE;
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umask($mask);
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return $fields->{cfgNum};
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}
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sub load {
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my ( $self, $cfgNum, $fields ) = @_;
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my ( $f, $filename );
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$filename = $self->_yamlFile($cfgNum);
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local $/ = '';
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my $ret;
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unless ( open FILE, '<', $filename ) {
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$Lemonldap::NG::Common::Conf::msg .= "Read error: $!$@";
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return undef;
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}
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binmode FILE;
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$f = join( '', <FILE> );
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eval { $ret = YAML::Load($f) };
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if ($@) {
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print STDERR "$@\n";
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$Lemonldap::NG::Common::Conf::msg .= "YAML fails to read file: $@ \n";
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return undef;
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}
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foreach ( keys %$ret ) {
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if ( $_ =~ $boolKeys ) {
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$ret->{$_} = $ret->{$_} ? 1 : 0;
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}
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}
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return $ret;
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}
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sub delete {
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my ( $self, $cfgNum ) = @_;
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my $file = $self->_yamlFile($cfgNum);
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if ( -e $file ) {
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my $res = unlink($file);
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$Lemonldap::NG::Common::Conf::msg .= $! unless ($res);
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return $res;
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}
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else {
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$Lemonldap::NG::Common::Conf::msg .=
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"Unable to delete conf $cfgNum, no such file";
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return 0;
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}
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}
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1;
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__END__
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