# nmu -- lintian check script -*- perl -*-

# Copyright (C) 2004 Jeroen van Wolffelaar
#
# 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 http://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::nmu;
use strict;
use Tags;
use Util;

sub run {

my $pkg = shift;
my $type = shift;
my $changelog_mentions_nmu = 0;
my $changelog_mentions_qa = 0;
my $uploader = undef;

# This isn't really an NMU check, but right now no other check looks at
# debian/changelog in source packages.  Catch a debian/changelog file that's a
# symlink.  If it was a symlink to a file we didn't unpack, bail rather than
# abort.
if (-l "debfiles/changelog") {
    tag "changelog-is-symlink", "";
    return 0 unless -f "debfiles/changelog";
}

open (CHANGELOG, '<', "debfiles/changelog")
    or fail("Failed opening changelog");
<CHANGELOG>;
my $firstline = 1;
while (<CHANGELOG>) {
	if ($firstline) {
		$changelog_mentions_nmu = 1
			if (/\bnmu\b/i or /non-maintainer upload/i) and not /(ackno|confir)/i;
		$changelog_mentions_qa = 1 if /orphan/i or /qa (?:group )?upload/i;
		$firstline = 0 if /^\s+\S/;
	}
	if (/^ -- ([^>]+>)/) {
		$uploader = $1;
		last;
	}
}
close CHANGELOG;

my $version = getfield("version");
my $maintainer = getfield("maintainer");
my $uploaders = getfield("uploaders");

my $version_nmuness = 0;
if ($version =~ /-[^.-]+(\.[^.-]+)?(\.[^.-]+)?$/) {
	$version_nmuness = 1 if defined $1;
	$version_nmuness = 2 if defined $2;
}
if ($version =~ /\+b\d+$/) {
	$version_nmuness = 2;
}

my $upload_is_nmu = $uploader ne $maintainer;
if (defined $uploaders) {
	my @uploaders = split /,/, $uploaders;
	$upload_is_nmu = 0 if grep /^\s*\Q$uploader\E\s*$/, @uploaders;
}

# No such thing as NMUs in Ubuntu-land.
if ($version =~ /ubuntu/) {
    $upload_is_nmu = 0;
    $version_nmuness = 0;
}

if ($maintainer =~ /packages\@qa.debian.org/) {
	tag "orphaned-package-should-not-have-uploaders", ""
		if defined $uploaders;
	tag "qa-upload-has-incorrect-version-number", "$version"
		if $version_nmuness;
	tag "changelog-should-mention-qa", ""
		if !$changelog_mentions_qa;
} else {
	tag "changelog-should-mention-nmu", ""
		if !$changelog_mentions_nmu && $upload_is_nmu;
	tag "changelog-should-not-mention-nmu", ""
		if $changelog_mentions_nmu && !$upload_is_nmu;
	tag "source-nmu-has-incorrect-version-number", "$version"
		if $upload_is_nmu && $version_nmuness != 1;
	tag "maintainer-upload-has-incorrect-version-number", "$version"
		if !$upload_is_nmu && $version_nmuness;
}

}

sub getfield {
	return undef if not open (FIELD, '<', "fields/" . shift);
	my $field = <FIELD>;
	close FIELD;
	$field =~ s/\n$//;
	return $field;
}

1;

# vim: ts=4 sw=4
