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# Copyright (C) 2019-2020 Felix Lechner
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, you can find it on the World Wide
# Web at https://www.gnu.org/copyleft/gpl.html, or write to the Free
# Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
# MA 02110-1301, USA.
package Lintian::Processable::Changes;
use v5.20;
use warnings;
use utf8;
use Carp qw(croak);
use Path::Tiny;
use Unicode::UTF8 qw(valid_utf8 decode_utf8 encode_utf8);
use Lintian::Deb822;
use Moo;
use namespace::clean;
with
'Lintian::Processable',
'Lintian::Processable::Fields::Files',
'Lintian::Processable::Changes::Overrides';
=for Pod::Coverage BUILDARGS
=head1 NAME
Lintian::Processable::Changes -- A changes file Lintian can process
=head1 SYNOPSIS
use Lintian::Processable::Changes;
my $processable = Lintian::Processable::Changes->new;
$processable->init_from_file('path');
=head1 DESCRIPTION
This class represents a 'changes' file that Lintian can process. Objects
of this kind are often part of a L<Lintian::Group>, which
represents all the files in a changes or buildinfo file.
=head1 INSTANCE METHODS
=over 4
=item init_from_file (PATH)
Initializes a new object from PATH.
=cut
sub init_from_file {
my ($self, $file) = @_;
croak encode_utf8("File $file does not exist")
unless -e $file;
$self->path($file);
$self->type('changes');
# dpkg will include news items in national encoding
my $bytes = path($self->path)->slurp;
my $contents;
if (valid_utf8($bytes)) {
$contents = decode_utf8($bytes);
} else {
# try to proceed with nat'l encoding; stopping here breaks tests
$contents = $bytes;
}
my $primary = Lintian::Deb822->new;
my @sections = $primary->parse_string($contents)
or croak encode_utf8(
$self->path. ' is not a valid '. $self->type . ' file');
$self->fields($sections[0]);
my $name = $self->fields->value('Source');
my $version = $self->fields->value('Version');
my $architecture = $self->fields->value('Architecture');
unless (length $name) {
$name = $self->guess_name($self->path);
croak encode_utf8('Cannot determine the name from ' . $self->path)
unless length $name;
}
my $source_name = $name;
my $source_version = $version;
$self->name($name);
$self->version($version);
$self->architecture($architecture);
$self->source_name($source_name);
$self->source_version($source_version);
# make sure none of these fields can cause traversal
$self->tainted(1)
if $self->name ne $name
|| $self->version ne $version
|| $self->architecture ne $architecture
|| $self->source_name ne $source_name
|| $self->source_version ne $source_version;
return;
}
=back
=head1 AUTHOR
Originally written by Felix Lechner <felix.lechner@lease-up.com> for Lintian.
=head1 SEE ALSO
lintian(1)
L<Lintian::Processable>
=cut
1;
# Local Variables:
# indent-tabs-mode: nil
# cperl-indent-level: 4
# End:
# vim: syntax=perl sw=4 sts=4 sr et
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