diff options
Diffstat (limited to 'scripts/dpkg-gencontrol.pl')
| -rwxr-xr-x | scripts/dpkg-gencontrol.pl | 436 |
1 files changed, 436 insertions, 0 deletions
diff --git a/scripts/dpkg-gencontrol.pl b/scripts/dpkg-gencontrol.pl new file mode 100755 index 0000000..87eb6e6 --- /dev/null +++ b/scripts/dpkg-gencontrol.pl @@ -0,0 +1,436 @@ +#!/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_('%s is deprecated; it is without effect'), $_); + } elsif (m/^-F([0-9a-z]+)$/) { + $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_vendor_substvars(); +$substvars->set_arch_substvars(); +$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, $oppackage, "@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, virtual => 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_("parsing package '%s' %s field: %s"), $oppackage, + $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_("parsing package '%s' %s field: %s"), $oppackage, + $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 '%s' is architecture all"), $field, $oppackage) + 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 = $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 '%s' with udeb specific field %s"), + $pkg_type, $oppackage, $f) + if defined($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 %hardlink; + my $scan_installed_size = sub { + lstat or syserr(g_('cannot stat %s'), $File::Find::name); + + if (-f _ or -l _) { + my ($dev, $ino, $nlink) = (lstat _)[0, 1, 3]; + + # For filesystem objects with actual content accumulate the size + # in 1 KiB units. + $installed_size += POSIX::ceil((-s _) / 1024) + if not exists $hardlink{"$dev:$ino"}; + + # Track hardlinks to avoid repeated additions. + $hardlink{"$dev:$ino"} = 1 if $nlink > 1; + } 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(); |