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# ex:ts=8 sw=4:
# $OpenBSD: ArcCheck.pm,v 1.6 2007/05/02 15:05:29 espie Exp $
#
# Copyright (c) 2005-2006 Marc Espie <espie@openbsd.org>
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
# Supplementary code to handle archives in the package context.
# Contrarily to GNU-tar, we do not change the archive format, but by
# convention, the names LongName\d+ and LongLink\d correspond to names
# too long to fit. The actual names reside in the PLIST, but the archive
# is still a valid archive.
#
package OpenBSD::Ustar::Object;
# match archive header name against PackingElement item
sub check_name
{
my ($self, $item) = @_;
return 1 if $self->{name} eq $item->{name};
if ($self->{name} =~ m/^LongName\d+$/) {
$self->{name} = $item->{name};
return 1;
}
return 0;
}
# match archive header link name against actual link names
sub check_linkname
{
my ($self, $linkname) = @_;
my $c = $self->{linkname};
if ($self->isHardLink && defined $self->{cwd}) {
$c = $self->{cwd}.'/'.$c;
}
return 1 if $c eq $linkname;
if ($self->{linkname} =~ m/^Long(?:Link|Name)\d+$/) {
$self->{linkname} = $linkname;
if ($self->isHardLink && defined $self->{cwd}) {
$self->{linkname} =~ s|^$self->{cwd}/||;
}
return 1;
}
return 0;
}
# copy long items, avoiding duplicate long names.
sub copy_long
{
my ($self, $wrarc) = @_;
if ($self->{name} =~ m/^LongName(\d+)$/) {
$wrarc->{name_index} = $1 + 1;
}
if (length($self->{name}) > MAXFILENAME+MAXPREFIX+1) {
$wrarc->{name_index} = 0 if !defined $wrarc->{name_index};
$entry->{name} = 'LongName'.$wrarc->{name_index}++;
}
$self->copy($wrarc);
}
package OpenBSD::Ustar;
# prepare item and introduce long names where needed.
sub prepare_long
{
my ($self, $item) = @_;
my $filename = $item->{name};
my $entry = $self->prepare($filename);
if (!defined $entry->{uname}) {
die "No user name for ", $entry->{name}, " (uid ", $entry->{uid}, ")\n";
}
if (!defined $entry->{gname}) {
die "No group name for ", $entry->{name}, " (gid ", $entry->{gid}. "\n";
}
my ($prefix, $name) = split_name($entry->{name});
if (length($name) > MAXFILENAME || length($prefix) > MAXPREFIX) {
$self->{name_index} = 0 if !defined $self->{name_index};
$entry->{name} = 'LongName'.$self->{name_index}++;
}
if (length($entry->{linkname}) > MAXLINKNAME) {
$self->{linkname_index} = 0 if !defined $self->{linkname_index};
$entry->{linkname} = 'LongLink'.$self->{linkname_index}++;
}
return $entry;
}
1;
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