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#!/usr/bin/perl
#
# dpkg-source
#
# Copyright © 1996 Ian Jackson <ijackson@chiark.greenend.org.uk>
# Copyright © 1997 Klee Dienes <klee@debian.org>
# Copyright © 1999-2003 Wichert Akkerman <wakkerma@debian.org>
# Copyright © 1999 Ben Collins <bcollins@debian.org>
# Copyright © 2000-2003 Adam Heath <doogie@debian.org>
# Copyright © 2005 Brendan O'Dea <bod@debian.org>
# Copyright © 2006-2008 Frank Lichtenheld <djpig@debian.org>
# Copyright © 2006-2009,2012 Guillem Jover <guillem@debian.org>
# Copyright © 2008-2011 Raphaël Hertzog <hertzog@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(any none);
use Cwd;
use File::Basename;
use File::Spec;
use Dpkg ();
use Dpkg::Gettext;
use Dpkg::ErrorHandling;
use Dpkg::Arch qw(:operators);
use Dpkg::Deps;
use Dpkg::Compression;
use Dpkg::Conf;
use Dpkg::Control::Info;
use Dpkg::Control::Tests;
use Dpkg::Control::Fields;
use Dpkg::Substvars;
use Dpkg::Version;
use Dpkg::Vars;
use Dpkg::Changelog::Parse;
use Dpkg::Source::Format;
use Dpkg::Source::Package qw(get_default_diff_ignore_regex
set_default_diff_ignore_regex
get_default_tar_ignore_pattern);
use Dpkg::Vendor qw(run_vendor_hook);
textdomain('dpkg-dev');
my $controlfile;
my $changelogfile;
my $changelogformat;
my $build_format;
my %options = (
# Ignore files
tar_ignore => [],
diff_ignore_regex => '',
# Misc options
copy_orig_tarballs => 1,
no_check => 0,
no_overwrite_dir => 1,
require_valid_signature => 0,
require_strong_checksums => 0,
);
# Fields to remove/override
my %remove;
my %override;
my $substvars = Dpkg::Substvars->new();
my $tar_ignore_default_pattern_done;
my $diff_ignore_regex = get_default_diff_ignore_regex();
my @options;
my @cmdline_options;
while (@ARGV && $ARGV[0] =~ m/^-/) {
my $arg = shift @ARGV;
if ($arg eq '-b' or $arg eq '--build') {
setopmode('build');
} elsif ($arg eq '-x' or $arg eq '--extract') {
setopmode('extract');
} elsif ($arg eq '--before-build') {
setopmode('before-build');
} elsif ($arg eq '--after-build') {
setopmode('after-build');
} elsif ($arg eq '--commit') {
setopmode('commit');
} elsif ($arg eq '--print-format') {
setopmode('print-format');
report_options(info_fh => \*STDERR); # Avoid clutter on STDOUT
} else {
push @options, $arg;
}
}
my $dir;
if (defined($options{opmode}) &&
$options{opmode} =~ /^(build|print-format|(before|after)-build|commit)$/) {
if (not scalar(@ARGV)) {
usageerr(g_('--%s needs a directory'), $options{opmode})
unless $1 eq 'commit';
$dir = '.';
} else {
$dir = File::Spec->catdir(shift(@ARGV));
}
stat($dir) or syserr(g_('cannot stat directory %s'), $dir);
if (not -d $dir) {
error(g_('directory argument %s is not a directory'), $dir);
}
if ($dir eq '.') {
# . is never correct, adjust automatically
$dir = basename(getcwd());
chdir '..' or syserr(g_("unable to chdir to '%s'"), '..');
}
# --format options are not allowed, they would take precedence
# over real command line options, debian/source/format should be used
# instead
# --unapply-patches is only allowed in local-options as it's a matter
# of personal taste and the default should be to keep patches applied
my $forbidden_opts_re = {
'options' => qr/^--(?:format=|unapply-patches$|abort-on-upstream-changes$)/,
'local-options' => qr/^--format=/,
};
foreach my $filename ('local-options', 'options') {
my $conf = Dpkg::Conf->new();
my $optfile = File::Spec->catfile($dir, 'debian', 'source', $filename);
next unless -f $optfile;
$conf->load($optfile);
$conf->filter(remove => sub { $_[0] =~ $forbidden_opts_re->{$filename} });
if (@$conf) {
info(g_('using options from %s: %s'), $optfile, join(' ', @$conf))
unless $options{opmode} eq 'print-format';
unshift @options, @$conf;
}
}
}
while (@options) {
$_ = shift(@options);
if (m/^--format=(.*)$/) {
$build_format //= $1;
} elsif (m/^-(?:Z|-compression=)(.*)$/) {
my $compression = $1;
$options{compression} = $compression;
usageerr(g_('%s is not a supported compression'), $compression)
unless compression_is_supported($compression);
compression_set_default($compression);
} elsif (m/^-(?:z|-compression-level=)(.*)$/) {
my $comp_level = $1;
$options{comp_level} = $comp_level;
usageerr(g_('%s is not a compression level'), $comp_level)
unless compression_is_valid_level($comp_level);
compression_set_default_level($comp_level);
} elsif (m/^-c(.*)$/) {
$controlfile = $1;
} elsif (m/^-l(.*)$/) {
$changelogfile = $1;
} elsif (m/^-F([0-9a-z]+)$/) {
$changelogformat = $1;
} elsif (m/^-D([^\=:]+)[=:](.*)$/s) {
$override{$1} = $2;
} elsif (m/^-U([^\=:]+)$/) {
$remove{$1} = 1;
} elsif (m/^-(?:i|-diff-ignore(?:$|=))(.*)$/) {
$options{diff_ignore_regex} = $1 ? $1 : $diff_ignore_regex;
} elsif (m/^--extend-diff-ignore=(.+)$/) {
$diff_ignore_regex .= "|$1";
if ($options{diff_ignore_regex}) {
$options{diff_ignore_regex} .= "|$1";
}
set_default_diff_ignore_regex($diff_ignore_regex);
} elsif (m/^-(?:I|-tar-ignore=)(.+)$/) {
push @{$options{tar_ignore}}, $1;
} elsif (m/^-(?:I|-tar-ignore)$/) {
unless ($tar_ignore_default_pattern_done) {
push @{$options{tar_ignore}}, get_default_tar_ignore_pattern();
# Prevent adding multiple times
$tar_ignore_default_pattern_done = 1;
}
} elsif (m/^--no-copy$/) {
$options{copy_orig_tarballs} = 0;
} elsif (m/^--no-check$/) {
$options{no_check} = 1;
} elsif (m/^--no-overwrite-dir$/) {
$options{no_overwrite_dir} = 1;
} elsif (m/^--require-valid-signature$/) {
$options{require_valid_signature} = 1;
} elsif (m/^--require-strong-checksums$/) {
$options{require_strong_checksums} = 1;
} elsif (m/^-V(\w[-:0-9A-Za-z]*)[=:](.*)$/s) {
$substvars->set($1, $2);
} elsif (m/^-T(.*)$/) {
$substvars->load($1) if -e $1;
} elsif (m/^-(?:\?|-help)$/) {
usage();
exit(0);
} elsif (m/^--version$/) {
version();
exit(0);
} elsif (m/^-[EW]$/) {
# Deprecated option
warning(g_('-E and -W are deprecated, they are without effect'));
} elsif (m/^-q$/) {
report_options(quiet_warnings => 1);
$options{quiet} = 1;
} elsif (m/^--$/) {
last;
} else {
push @cmdline_options, $_;
}
}
unless (defined($options{opmode})) {
usageerr(g_('need an action option'));
}
if ($options{opmode} =~ /^(build|print-format|(before|after)-build|commit)$/) {
$options{ARGV} = \@ARGV;
$changelogfile ||= "$dir/debian/changelog";
$controlfile ||= "$dir/debian/control";
my %ch_options = (file => $changelogfile);
$ch_options{changelogformat} = $changelogformat if $changelogformat;
my $changelog = changelog_parse(%ch_options);
my $control = Dpkg::Control::Info->new($controlfile);
# <https://reproducible-builds.org/specs/source-date-epoch/>
$ENV{SOURCE_DATE_EPOCH} ||= $changelog->{timestamp} || time;
# Select the format to use
if (not defined $build_format) {
my $format_file = "$dir/debian/source/format";
if (-e $format_file) {
my $format = Dpkg::Source::Format->new(filename => $format_file);
$build_format = $format->get();
} else {
warning(g_('no source format specified in %s, ' .
'see dpkg-source(1)'), 'debian/source/format')
if $options{opmode} eq 'build';
$build_format = '1.0';
}
}
my $srcpkg = Dpkg::Source::Package->new(format => $build_format,
options => \%options);
my $fields = $srcpkg->{fields};
$srcpkg->parse_cmdline_options(@cmdline_options);
my @sourcearch;
my %archadded;
my @binarypackages;
# Scan control info of source package
my $src_fields = $control->get_source();
error(g_("%s doesn't contain any information about the source package"),
$controlfile) unless defined $src_fields;
my $src_sect = $src_fields->{'Section'} || 'unknown';
my $src_prio = $src_fields->{'Priority'} || 'unknown';
foreach (keys %{$src_fields}) {
my $v = $src_fields->{$_};
if (m/^Source$/i) {
set_source_package($v);
$fields->{$_} = $v;
} elsif (m/^Uploaders$/i) {
($fields->{$_} = $v) =~ s/\s*[\r\n]\s*/ /g; # Merge in a single-line
} elsif (m/^Build-(?:Depends|Conflicts)(?:-Arch|-Indep)?$/i) {
my $dep;
my $type = field_get_dep_type($_);
$dep = deps_parse($v, build_dep => 1, union => $type eq 'union');
error(g_('error occurred while parsing %s'), $_) unless defined $dep;
my $facts = Dpkg::Deps::KnownFacts->new();
$dep->simplify_deps($facts);
$dep->sort() if $type eq 'union';
$fields->{$_} = $dep->output();
} else {
field_transfer_single($src_fields, $fields);
}
}
# Scan control info of binary packages
my @pkglist;
foreach my $pkg ($control->get_packages()) {
my $p = $pkg->{'Package'};
my $sect = $pkg->{'Section'} || $src_sect;
my $prio = $pkg->{'Priority'} || $src_prio;
my $type = $pkg->{'Package-Type'} ||
$pkg->get_custom_field('Package-Type') || 'deb';
my $arch = $pkg->{'Architecture'};
my $profile = $pkg->{'Build-Profiles'};
my $pkg_summary = sprintf('%s %s %s %s', $p, $type, $sect, $prio);
$pkg_summary .= ' arch=' . join ',', split ' ', $arch;
if (defined $profile) {
# If the string does not contain brackets then it is using the
# old syntax. Emit a fatal error.
if ($profile !~ m/^\s*<.*>\s*$/) {
error(g_('binary package stanza %s is using an obsolete ' .
'Build-Profiles field syntax'), $p);
}
# Instead of splitting twice and then joining twice, we just do
# simple string replacements:
# Remove the enclosing <>
$profile =~ s/^\s*<(.*)>\s*$/$1/;
# Join lists with a plus (OR)
$profile =~ s/>\s+</+/g;
# Join their elements with a comma (AND)
$profile =~ s/\s+/,/g;
$pkg_summary .= " profile=$profile";
}
if (defined $pkg->{'Essential'} and $pkg->{'Essential'} eq 'yes') {
$pkg_summary .= ' essential=yes';
}
push @pkglist, $pkg_summary;
push @binarypackages, $p;
foreach (keys %{$pkg}) {
my $v = $pkg->{$_};
if (m/^Architecture$/) {
# Gather all binary architectures in one set. 'any' and 'all'
# are special-cased as they need to be the only ones in the
# current stanza if present.
if (debarch_eq($v, 'any') || debarch_eq($v, 'all')) {
push(@sourcearch, $v) unless $archadded{$v}++;
} else {
for my $a (split(/\s+/, $v)) {
error(g_("'%s' is not a legal architecture string"), $a)
if debarch_is_illegal($a);
error(g_('architecture %s only allowed on its ' .
"own (list for package %s is '%s')"),
$a, $p, $a)
if $a eq 'any' or $a eq 'all';
push(@sourcearch, $a) unless $archadded{$a}++;
}
}
} elsif (m/^(?:Homepage|Description)$/) {
# Do not overwrite the same field from the source entry
} else {
field_transfer_single($pkg, $fields);
}
}
}
unless (scalar(@pkglist)) {
error(g_("%s doesn't list any binary package"), $controlfile);
}
if (any { $_ eq 'any' } @sourcearch) {
# If we encounter one 'any' then the other arches become insignificant
# except for 'all' that must also be kept
if (any { $_ eq 'all' } @sourcearch) {
@sourcearch = qw(any all);
} else {
@sourcearch = qw(any);
}
} else {
# Minimize arch list, by removing arches already covered by wildcards
my @arch_wildcards = grep { debarch_is_wildcard($_) } @sourcearch;
my @mini_sourcearch = @arch_wildcards;
foreach my $arch (@sourcearch) {
if (none { debarch_is($arch, $_) } @arch_wildcards) {
push @mini_sourcearch, $arch;
}
}
@sourcearch = @mini_sourcearch;
}
$fields->{'Architecture'} = join(' ', @sourcearch);
$fields->{'Package-List'} = "\n" . join("\n", sort @pkglist);
# Check if we have a testsuite, and handle manual and automatic values.
set_testsuite_fields($fields, @binarypackages);
# Scan fields of dpkg-parsechangelog
foreach (keys %{$changelog}) {
my $v = $changelog->{$_};
if (m/^Source$/) {
set_source_package($v);
$fields->{$_} = $v;
} elsif (m/^Version$/) {
my ($ok, $error) = version_check($v);
error($error) unless $ok;
$fields->{$_} = $v;
} elsif (m/^Binary-Only$/) {
error(g_('building source for a binary-only release'))
if $v eq 'yes' and $options{opmode} eq 'build';
} elsif (m/^Maintainer$/i) {
# Do not replace the field coming from the source entry
} else {
field_transfer_single($changelog, $fields);
}
}
$fields->{'Binary'} = join(', ', @binarypackages);
# Avoid overly long line by splitting over multiple lines
if (length($fields->{'Binary'}) > 980) {
$fields->{'Binary'} =~ s/(.{0,980}), ?/$1,\n/g;
}
if ($options{opmode} eq 'print-format') {
print $fields->{'Format'} . "\n";
exit(0);
} elsif ($options{opmode} eq 'before-build') {
$srcpkg->before_build($dir);
exit(0);
} elsif ($options{opmode} eq 'after-build') {
$srcpkg->after_build($dir);
exit(0);
} elsif ($options{opmode} eq 'commit') {
$srcpkg->commit($dir);
exit(0);
}
# Verify pre-requisites are met
my ($res, $msg) = $srcpkg->can_build($dir);
error(g_("can't build with source format '%s': %s"), $build_format, $msg) unless $res;
# Only -b left
info(g_("using source format '%s'"), $fields->{'Format'});
run_vendor_hook('before-source-build', $srcpkg);
# Build the files (.tar.gz, .diff.gz, etc)
$srcpkg->build($dir);
# Write the .dsc
my $dscname = $srcpkg->get_basename(1) . '.dsc';
info(g_('building %s in %s'), get_source_package(), $dscname);
$srcpkg->write_dsc(filename => $dscname,
remove => \%remove,
override => \%override,
substvars => $substvars);
exit(0);
} elsif ($options{opmode} eq 'extract') {
# Check command line
unless (scalar(@ARGV)) {
usageerr(g_('--%s needs at least one argument, the .dsc'),
$options{opmode});
}
if (scalar(@ARGV) > 2) {
usageerr(g_('--%s takes no more than two arguments'), $options{opmode});
}
my $dsc = shift(@ARGV);
if (-d $dsc) {
usageerr(g_('--%s needs the .dsc file as first argument, not a directory'),
$options{opmode});
}
# Create the object that does everything
my $srcpkg = Dpkg::Source::Package->new(filename => $dsc,
options => \%options);
# Parse command line options
$srcpkg->parse_cmdline_options(@cmdline_options);
# Decide where to unpack
my $newdirectory = $srcpkg->get_basename();
$newdirectory =~ s/_/-/g;
if (@ARGV) {
$newdirectory = File::Spec->catdir(shift(@ARGV));
if (-e $newdirectory) {
error(g_('unpack target exists: %s'), $newdirectory);
}
}
# Various checks before unpacking
unless ($options{no_check}) {
if ($srcpkg->is_signed()) {
$srcpkg->check_signature();
} else {
if ($options{require_valid_signature}) {
error(g_("%s doesn't contain a valid OpenPGP signature"), $dsc);
} else {
warning(g_('extracting unsigned source package (%s)'), $dsc);
}
}
$srcpkg->check_checksums();
}
# Unpack the source package (delegated to Dpkg::Source::Package::*)
info(g_('extracting %s in %s'), $srcpkg->{fields}{'Source'}, $newdirectory);
$srcpkg->extract($newdirectory);
exit(0);
}
sub set_testsuite_fields
{
my ($fields, @binarypackages) = @_;
my $testsuite_field = $fields->{'Testsuite'} // '';
my %testsuite = map { $_ => 1 } split /\s*,\s*/, $testsuite_field;
if (-e "$dir/debian/tests/control") {
error(g_('test control %s is not a regular file'),
'debian/tests/control') unless -f _;
$testsuite{autopkgtest} = 1;
my $tests = Dpkg::Control::Tests->new();
$tests->load("$dir/debian/tests/control");
set_testsuite_triggers_field($tests, $fields, @binarypackages);
} elsif ($testsuite{autopkgtest}) {
warning(g_('%s field contains value %s, but no tests control file %s'),
'Testsuite', 'autopkgtest', 'debian/tests/control');
delete $testsuite{autopkgtest};
}
$fields->{'Testsuite'} = join ', ', sort keys %testsuite;
}
sub set_testsuite_triggers_field
{
my ($tests, $fields, @binarypackages) = @_;
my %testdeps;
# Never overwrite a manually defined field.
return if $fields->{'Testsuite-Triggers'};
foreach my $test ($tests->get()) {
next unless $test->{Depends};
my $deps = deps_parse($test->{Depends}, use_arch => 0, tests_dep => 1);
deps_iterate($deps, sub { $testdeps{$_[0]->{package}} = 1 });
}
# Remove our own binaries and its meta-depends variant.
foreach my $pkg (@binarypackages, qw(@)) {
delete $testdeps{$pkg};
}
$fields->{'Testsuite-Triggers'} = join ', ', sort keys %testdeps;
}
sub setopmode {
my $opmode = shift;
if (defined($options{opmode})) {
usageerr(g_('two commands specified: --%s and --%s'),
$options{opmode}, $opmode);
}
$options{opmode} = $opmode;
}
sub print_option {
my $opt = shift;
my $help;
if (length $opt->{name} > 25) {
$help .= sprintf " %-25s\n%s%s.\n", $opt->{name}, ' ' x 27, $opt->{help};
} else {
$help .= sprintf " %-25s%s.\n", $opt->{name}, $opt->{help};
}
}
sub get_format_help {
$build_format //= '1.0';
my $srcpkg = Dpkg::Source::Package->new(format => $build_format);
my @cmdline = $srcpkg->describe_cmdline_options();
return '' unless @cmdline;
my $help_build = my $help_extract = '';
my $help;
foreach my $opt (@cmdline) {
$help_build .= print_option($opt) if $opt->{when} eq 'build';
$help_extract .= print_option($opt) if $opt->{when} eq 'extract';
}
if ($help_build) {
$help .= "\n";
$help .= "Build format $build_format options:\n";
$help .= $help_build || C_('source options', '<none>');
}
if ($help_extract) {
$help .= "\n";
$help .= "Extract format $build_format options:\n";
$help .= $help_extract || C_('source options', '<none>');
}
return $help;
}
sub version {
printf g_("Debian %s version %s.\n"), $Dpkg::PROGNAME, $Dpkg::PROGVERSION;
print 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>...] <command>')
. "\n\n" . g_(
'Commands:
-x, --extract <filename>.dsc [<output-dir>]
extract source package.
-b, --build <dir> build source package.
--print-format <dir> print the format to be used for the source package.
--before-build <dir> run the corresponding source package format hook.
--after-build <dir> run the corresponding source package format hook.
--commit [<dir> [<patch-name>]]
store upstream changes in a new patch.')
. "\n\n" . g_(
"Build options:
-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.
--format=<source-format> set the format to be used for the source package.
-V<name>=<value> set a substitution variable.
-T<substvars-file> read variables here.
-D<field>=<value> override or add a .dsc field and value.
-U<field> remove a field.
-i, --diff-ignore[=<regex>]
filter out files to ignore diffs of
(defaults to: '%s').
-I, --tar-ignore[=<pattern>]
filter out files when building tarballs
(defaults to: %s).
-Z, --compression=<compression>
select compression to use (defaults to '%s',
supported are: %s).
-z, --compression-level=<level>
compression level to use (defaults to '%d',
supported are: '1'-'9', 'best', 'fast')")
. "\n\n" . g_(
"Extract options:
--no-copy don't copy .orig tarballs
--no-check don't check signature and checksums before unpacking
--no-overwrite-dir do not overwrite directory on extraction
--require-valid-signature abort if the package doesn't have a valid signature
--require-strong-checksums
abort if the package contains no strong checksums
--ignore-bad-version allow bad source package versions.")
. "\n" .
get_format_help()
. "\n" . g_(
'General options:
-q quiet mode.
-?, --help show this help message.
--version show the version.')
. "\n\n" . g_(
'Source format specific build and extract options are available;
use --format with --help to see them.') . "\n",
$Dpkg::PROGNAME,
get_default_diff_ignore_regex(),
join(' ', map { "-I$_" } get_default_tar_ignore_pattern()),
compression_get_default(),
join(' ', compression_get_list()),
compression_get_default_level();
}
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