ArcCheck.pm revision 1.1 
1# ex:ts=8 sw=4:
2# $OpenBSD: ArcCheck.pm,v 1.1 2005/08/07 14:18:05 espie Exp $
3#
4# Copyright (c) 2005 Marc Espie <espie@openbsd.org>
5#
6# Permission to use, copy, modify, and distribute this software for any
7# purpose with or without fee is hereby granted, provided that the above
8# copyright notice and this permission notice appear in all copies.
9#
10# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17
18# Supplementary code to handle archives.
19
20package OpenBSD::Ustar::Object;
21
22sub check_name
23{
24	my ($self, $name) = @_;
25	return 1 if $self->{name} eq $name;
26	if ($self->{name} =~ m/^LongName\d+$/) {
27		$self->{name} = $name;
28		return 1;
29	}
30	return 0;
31}
32
33sub check_linkname
34{
35	my ($self, $linkname) = @_;
36	my $c = $self->{linkname};
37	if ($self->isHardLink() && defined $self->{cwd}) {
38		$c = $self->{cwd}.'/'.$c;
39	}
40	return 1 if $c eq $linkname;
41	if ($self->{linkname} =~ m/^Long(?:Link|Name)\d+$/) {
42		$self->{linkname} = $linkname;
43		if ($self->isHardLink() && defined $self->{cwd}) {
44			$self->{linkname} =~ s|^$self->{cwd}/||;
45		}
46		return 1;
47	}
48	return 0;
49}
50
51sub copy_long
52{
53	my ($self, $wrarc) = @_;
54	if ($self->{name} =~ m/^LongName(\d+)$/) {
55		$wrarc->{name_index} = $1 + 1;
56	}
57	if (length($self->{name}) > MAXFILENAME+MAXPREFIX+1) {
58		$wrarc->{name_index} = 0 if !defined $wrarc->{name_index};
59		$entry->{name} = 'LongName'.$wrarc->{name_index}++;
60	}
61	$self->copy($wrarc);
62}
63
64package OpenBSD::Ustar;
65
66sub prepare_long
67{
68	my ($self, $filename) = @_;
69	my $entry = $self->prepare($filename);
70	my ($prefix, $name) = split_name($entry->{name});
71	if (length($name) > MAXFILENAME || length($prefix) > MAXPREFIX) {
72		$self->{name_index} = 0 if !defined $self->{name_index};
73		$entry->{name} = 'LongName'.$self->{name_index}++;
74	}
75	if (length($entry->{linkname}) > MAXLINKNAME) {
76		$self->{linkname_index} = 0 if !defined $self->{linkname_index};
77		$entry->{linkname} = 'LongLink'.$self->{linkname_index}++;
78	}
79	return $entry;
80}
81
821;
83