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#-*- perl -*-
#
# Copyright (C) 2002,2003,2004,2005,2006 Ken'ichi Fukamachi
# All rights reserved. This program is free software; you can
# redistribute it and/or modify it under the same terms as Perl itself.
#
# $FML: DirUtils.pm,v 1.23 2006/03/05 09:50:42 fukachan Exp $
#
package FML::Command::DirUtils;
use strict;
use vars qw(@ISA @EXPORT @EXPORT_OK $AUTOLOAD);
use Carp;
=head1 NAME
FML::Command::DirUtils - utilities for directory handlings.
=head1 SYNOPSIS
use FML::Command::DirUtils;
my $obj = new FML::Command::DirUtils;
$obj->dir($curproc, $command_context, $du_args);
=head1 DESCRIPTION
This class provides utilities for directory handlings.
=head1 METHODS
=head2 new()
constructor.
=cut
# Descriptions: constructor.
# Arguments: OBJ($self)
# Side Effects: none
# Return Value: OBJ
sub new
{
my ($self) = @_;
my ($type) = ref($self) || $self;
my $me = {};
use FML::Restriction::Base;
$me->{ _safe } = new FML::Restriction::Base;
return bless $me, $type;
}
=head2 dir($curproc, $command_context, $du_args)
show the result by executing "ls".
=cut
#
# XXX-TODO: if we can find CPAN module for dir listing, use it.
#
# Descriptions: show the result by executing "ls".
# Arguments: OBJ($self)
# OBJ($curproc) OBJ($command_context) HASH_REF($du_args)
# Side Effects: none
# Return Value: none
sub dir
{
my ($self, $curproc, $command_context, $du_args) = @_;
my $config = $curproc->config();
# inherit reply_message information.
my $rm_args = {};
my $recipient = $command_context->{ recipient } || '';
if ($recipient) { $rm_args->{ recipient } = $recipient;}
# option: permit "ls [-A-Za-z]" syntax
my $safe_opt_ls = '';
if (defined($du_args->{ opt_ls })) {
my $opt = $du_args->{ opt_ls };
my $safe = $self->{ _safe };
if ($safe->regexp_match('command_line_options', $opt)) {
$safe_opt_ls = $opt;
}
else {
$curproc->logwarn("deny ls options '$opt'");
$safe_opt_ls = '';
}
}
# regexp allowed to use here
my $safe = $self->{ _safe };
# chdir the ml's home dir
my $ml_home_dir = $config->{ ml_home_dir };
chdir $ml_home_dir || croak("cannot chdir \$ml_home_dir");
# build safe arguments
my $safe_args = '';
my $argv = $du_args->{ argv };
for my $x (@$argv) {
if ($safe->regexp_match('directory', $x) || $x =~ /^\s*$/) {
$safe_args .= " $x";
}
}
# execute ls command.
my $path_ls = $config->{ path_ls };
if (-x $path_ls) {
my $eval = "$path_ls $safe_opt_ls $safe_args";
$curproc->log("dir: run \"$eval\"");
use FileHandle;
my $fh = new FileHandle "$eval|";
if (defined $fh) {
my $buf = undef;
while ($buf = <$fh>) { $curproc->reply_message($buf, $rm_args);}
$fh->close();
}
else {
$curproc->logerror("fail to run '$eval'");
}
}
else {
$curproc->logerror("\$path_ls not found");
croak("\$path_ls not found");
}
}
=head1 CODING STYLE
See C<http://www.fml.org/software/FNF/> on fml coding style guide.
=head1 AUTHOR
Ken'ichi Fukamachi
=head1 COPYRIGHT
Copyright (C) 2002,2003,2004,2005,2006 Ken'ichi Fukamachi
All rights reserved. This program is free software; you can
redistribute it and/or modify it under the same terms as Perl itself.
=head1 HISTORY
FML::Command::DirUtils first appeared in fml8 mailing list driver package.
See C<http://www.fml.org/> for more details.
=cut
1;
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