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#!/usr/bin/perl
#
# dpkg-gencontrol
#
# Copyright © 1996 Ian Jackson
# Copyright © 2000,2002 Wichert Akkerman
# Copyright © 2006-2015 Guillem Jover <guillem@debian.org>
#
# 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, see <https://www.gnu.org/licenses/>.
use strict;
use warnings;
use List::Util qw(none);
use POSIX qw(:errno_h :fcntl_h);
use File::Find;
use Dpkg ();
use Dpkg::Gettext;
use Dpkg::ErrorHandling;
use Dpkg::Lock;
use Dpkg::Arch qw(get_host_arch debarch_eq debarch_is debarch_list_parse);
use Dpkg::Package;
use Dpkg::BuildProfiles qw(get_build_profiles);
use Dpkg::Deps;
use Dpkg::Control;
use Dpkg::Control::Info;
use Dpkg::Control::Fields;
use Dpkg::Substvars;
use Dpkg::Vars;
use Dpkg::Changelog::Parse;
use Dpkg::Dist::Files;
textdomain('dpkg-dev');
my $controlfile = 'debian/control';
my $changelogfile = 'debian/changelog';
my $changelogformat;
my $fileslistfile = 'debian/files';
my $packagebuilddir = 'debian/tmp';
my $outputfile;
my $sourceversion;
my $binaryversion;
my $forceversion;
my $forcefilename;
my $stdout;
my %remove;
my %override;
my $oppackage;
my $substvars = Dpkg::Substvars->new();
my $substvars_loaded = 0;
sub version {
printf g_("Debian %s version %s.\n"), $Dpkg::PROGNAME, $Dpkg::PROGVERSION;
printf g_('
This is free software; see the GNU General Public License version 2 or
later for copying conditions. There is NO warranty.
');
}
sub usage {
printf g_(
'Usage: %s [<option>...]')
. "\n\n" . g_(
'Options:
-p<package> print control file for package.
-c<control-file> get control info from this file.
-l<changelog-file> get per-version info from this file.
-F<changelog-format> force changelog format.
-v<force-version> set version of binary package.
-f<files-list-file> write files here instead of debian/files.
-P<package-build-dir> temporary build directory instead of debian/tmp.
-n<filename> assume the package filename will be <filename>.
-O[<file>] write to stdout (or <file>), not .../DEBIAN/control.
-is, -ip, -isp, -ips deprecated, ignored for compatibility.
-D<field>=<value> override or add a field and value.
-U<field> remove a field.
-V<name>=<value> set a substitution variable.
-T<substvars-file> read variables here, not debian/substvars.
-?, --help show this help message.
--version show the version.
'), $Dpkg::PROGNAME;
}
while (@ARGV) {
$_=shift(@ARGV);
if (m/^-p/p) {
$oppackage = ${^POSTMATCH};
my $err = pkg_name_is_illegal($oppackage);
error(g_("illegal package name '%s': %s"), $oppackage, $err) if $err;
} elsif (m/^-c/p) {
$controlfile = ${^POSTMATCH};
} elsif (m/^-l/p) {
$changelogfile = ${^POSTMATCH};
} elsif (m/^-P/p) {
$packagebuilddir = ${^POSTMATCH};
} elsif (m/^-f/p) {
$fileslistfile = ${^POSTMATCH};
} elsif (m/^-v(.+)$/) {
$forceversion= $1;
} elsif (m/^-O$/) {
$stdout= 1;
} elsif (m/^-O(.+)$/) {
$outputfile = $1;
} elsif (m/^-i([sp][sp]?)$/) {
warning(g_('-i%s is deprecated; it is without effect'), $1);
} elsif (m/^-F([0-9a-z]+)$/) {
$changelogformat=$1;
} elsif (m/^-D([^\=:]+)[=:]/p) {
$override{$1} = ${^POSTMATCH};
} elsif (m/^-U([^\=:]+)$/) {
$remove{$1}= 1;
} elsif (m/^-V(\w[-:0-9A-Za-z]*)[=:]/p) {
$substvars->set_as_used($1, ${^POSTMATCH});
} elsif (m/^-T(.*)$/) {
$substvars->load($1) if -e $1;
$substvars_loaded = 1;
} elsif (m/^-n/p) {
$forcefilename = ${^POSTMATCH};
} elsif (m/^-(?:\?|-help)$/) {
usage();
exit(0);
} elsif (m/^--version$/) {
version();
exit(0);
} else {
usageerr(g_("unknown option '%s'"), $_);
}
}
umask 0022; # ensure sane default permissions for created files
my %options = (file => $changelogfile);
$options{changelogformat} = $changelogformat if $changelogformat;
my $changelog = changelog_parse(%options);
if ($changelog->{'Binary-Only'}) {
$options{count} = 1;
$options{offset} = 1;
my $prev_changelog = changelog_parse(%options);
$sourceversion = $prev_changelog->{'Version'};
} else {
$sourceversion = $changelog->{'Version'};
}
if (defined $forceversion) {
$binaryversion = $forceversion;
} else {
$binaryversion = $changelog->{'Version'};
}
$substvars->set_version_substvars($sourceversion, $binaryversion);
$substvars->set_arch_substvars();
$substvars->load('debian/substvars') if -e 'debian/substvars' and not $substvars_loaded;
my $control = Dpkg::Control::Info->new($controlfile);
my $fields = Dpkg::Control->new(type => CTRL_PKG_DEB);
# Old-style bin-nmus change the source version submitted to
# set_version_substvars()
$sourceversion = $substvars->get('source:Version');
my $pkg;
if (defined($oppackage)) {
$pkg = $control->get_pkg_by_name($oppackage);
if (not defined $pkg) {
error(g_('package %s not in control info'), $oppackage)
}
} else {
my @packages = map { $_->{'Package'} } $control->get_packages();
if (@packages == 0) {
error(g_('no package stanza found in control info'));
} elsif (@packages > 1) {
error(g_('must specify package since control info has many (%s)'),
"@packages");
}
$pkg = $control->get_pkg_by_idx(1);
}
$substvars->set_msg_prefix(sprintf(g_('package %s: '), $pkg->{Package}));
# Scan source package
my $src_fields = $control->get_source();
foreach (keys %{$src_fields}) {
if (m/^Source$/) {
set_source_package($src_fields->{$_});
} elsif (m/^Description$/) {
# Description in binary packages is not inherited, do not copy this
# field, only initialize the description substvars.
$substvars->set_desc_substvars($src_fields->{$_});
} else {
field_transfer_single($src_fields, $fields);
}
}
$substvars->set_field_substvars($src_fields, 'S');
# Scan binary package
foreach (keys %{$pkg}) {
my $v = $pkg->{$_};
if (field_get_dep_type($_)) {
# Delay the parsing until later
} elsif (m/^Architecture$/) {
my $host_arch = get_host_arch();
if (debarch_eq('all', $v)) {
$fields->{$_} = $v;
} else {
my @archlist = debarch_list_parse($v, positive => 1);
if (none { debarch_is($host_arch, $_) } @archlist) {
error(g_("current host architecture '%s' does not " .
"appear in package's architecture list (%s)"),
$host_arch, "@archlist");
}
$fields->{$_} = $host_arch;
}
} else {
field_transfer_single($pkg, $fields);
}
}
# Scan fields of dpkg-parsechangelog
foreach (keys %{$changelog}) {
my $v = $changelog->{$_};
if (m/^Source$/) {
set_source_package($v);
} elsif (m/^Version$/) {
# Already handled previously.
} elsif (m/^Maintainer$/) {
# That field must not be copied from changelog even if it's
# allowed in the binary package control information
} else {
field_transfer_single($changelog, $fields);
}
}
$fields->{'Version'} = $binaryversion;
# Process dependency fields in a second pass, now that substvars have been
# initialized.
my $facts = Dpkg::Deps::KnownFacts->new();
$facts->add_installed_package($fields->{'Package'}, $fields->{'Version'},
$fields->{'Architecture'}, $fields->{'Multi-Arch'});
if (exists $pkg->{'Provides'}) {
my $provides = deps_parse($substvars->substvars($pkg->{'Provides'}, no_warn => 1),
reduce_restrictions => 1, union => 1);
if (defined $provides) {
foreach my $subdep ($provides->get_deps()) {
if ($subdep->isa('Dpkg::Deps::Simple')) {
$facts->add_provided_package($subdep->{package},
$subdep->{relation}, $subdep->{version},
$fields->{'Package'});
}
}
}
}
my (@seen_deps);
foreach my $field (field_list_pkg_dep()) {
# Arch: all can't be simplified as the host architecture is not known
my $reduce_arch = debarch_eq('all', $pkg->{Architecture} || 'all') ? 0 : 1;
if (exists $pkg->{$field}) {
my $dep;
my $field_value = $substvars->substvars($pkg->{$field},
msg_prefix => sprintf(g_('%s field of package %s: '), $field, $pkg->{Package}));
if (field_get_dep_type($field) eq 'normal') {
$dep = deps_parse($field_value, use_arch => 1,
reduce_arch => $reduce_arch,
reduce_profiles => 1);
error(g_('error occurred while parsing %s field: %s'), $field,
$field_value) unless defined $dep;
$dep->simplify_deps($facts, @seen_deps);
# Remember normal deps to simplify even further weaker deps
push @seen_deps, $dep;
} else {
$dep = deps_parse($field_value, use_arch => 1,
reduce_arch => $reduce_arch,
reduce_profiles => 1, union => 1);
error(g_('error occurred while parsing %s field: %s'), $field,
$field_value) unless defined $dep;
$dep->simplify_deps($facts);
$dep->sort();
}
error(g_('the %s field contains an arch-specific dependency but the ' .
'package is architecture all'), $field)
if $dep->has_arch_restriction();
$fields->{$field} = $dep->output();
delete $fields->{$field} unless $fields->{$field}; # Delete empty field
}
}
for my $f (qw(Package Version Architecture)) {
error(g_('missing information for output field %s'), $f)
unless defined $fields->{$f};
}
for my $f (qw(Maintainer Description)) {
warning(g_('missing information for output field %s'), $f)
unless defined $fields->{$f};
}
my $pkg_type = $override{'Package-Type'} ||
$pkg->{'Package-Type'} ||
$pkg->get_custom_field('Package-Type') || 'deb';
if ($pkg_type eq 'udeb') {
delete $fields->{'Package-Type'};
delete $fields->{'Homepage'};
} else {
for my $f (qw(Subarchitecture Kernel-Version Installer-Menu-Item)) {
warning(g_('%s package with udeb specific field %s'), $pkg_type, $f)
if defined($fields->{$f});
}
}
my $sourcepackage = get_source_package();
my $binarypackage = $override{'Package'} // $fields->{'Package'};
my $verdiff = $binaryversion ne $sourceversion;
if ($binarypackage ne $sourcepackage || $verdiff) {
$fields->{'Source'} = $sourcepackage;
$fields->{'Source'} .= ' (' . $sourceversion . ')' if $verdiff;
}
if (!defined($substvars->get('Installed-Size'))) {
my $installed_size = 0;
my $scan_installed_size = sub {
lstat or syserr(g_('cannot stat %s'), $File::Find::name);
if (-f _ or -l _) {
# For filesystem objects with actual content accumulate the size
# in 1 KiB units.
$installed_size += POSIX::ceil((-s _) / 1024);
} else {
# For other filesystem objects assume a minimum 1 KiB baseline,
# as directories are shared resources between packages, and other
# object types are mainly metadata-only, supposedly consuming
# at most an inode.
$installed_size += 1;
}
};
find($scan_installed_size, $packagebuilddir) if -d $packagebuilddir;
$substvars->set_as_auto('Installed-Size', $installed_size);
}
if (defined($substvars->get('Extra-Size'))) {
my $size = $substvars->get('Extra-Size') + $substvars->get('Installed-Size');
$substvars->set_as_auto('Installed-Size', $size);
}
if (defined($substvars->get('Installed-Size'))) {
$fields->{'Installed-Size'} = $substvars->get('Installed-Size');
}
for my $f (keys %override) {
$fields->{$f} = $override{$f};
}
for my $f (keys %remove) {
delete $fields->{$f};
}
$fields->apply_substvars($substvars);
if ($stdout) {
$fields->output(\*STDOUT);
} else {
$outputfile //= "$packagebuilddir/DEBIAN/control";
my $sversion = $fields->{'Version'};
$sversion =~ s/^\d+://;
$forcefilename //= sprintf('%s_%s_%s.%s', $fields->{'Package'}, $sversion,
$fields->{'Architecture'}, $pkg_type);
my $section = $fields->{'Section'} || '-';
my $priority = $fields->{'Priority'} || '-';
# Obtain a lock on debian/control to avoid simultaneous updates
# of debian/files when parallel building is in use
my $lockfh;
my $lockfile = 'debian/control';
$lockfile = $controlfile if not -e $lockfile;
sysopen $lockfh, $lockfile, O_WRONLY
or syserr(g_('cannot write %s'), $lockfile);
file_lock($lockfh, $lockfile);
my $dist = Dpkg::Dist::Files->new();
$dist->load($fileslistfile) if -e $fileslistfile;
foreach my $file ($dist->get_files()) {
if (defined $file->{package} &&
($file->{package} eq $fields->{'Package'}) &&
($file->{package_type} eq $pkg_type) &&
(debarch_eq($file->{arch}, $fields->{'Architecture'}) ||
debarch_eq($file->{arch}, 'all'))) {
$dist->del_file($file->{filename});
}
}
my %fileattrs;
$fileattrs{automatic} = 'yes' if $fields->{'Auto-Built-Package'};
$dist->add_file($forcefilename, $section, $priority, %fileattrs);
$dist->save("$fileslistfile.new");
rename "$fileslistfile.new", $fileslistfile
or syserr(g_('install new files list file'));
# Release the lock
close $lockfh or syserr(g_('cannot close %s'), $lockfile);
$fields->save("$outputfile.new");
rename "$outputfile.new", $outputfile
or syserr(g_("cannot install output control file '%s'"), $outputfile);
}
$substvars->warn_about_unused();
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