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Edit File: dpkg-gencontrol
#!/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();