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Diffstat (limited to 'scripts/dpkg-scansources.pl')
| -rwxr-xr-x | scripts/dpkg-scansources.pl | 326 |
1 files changed, 326 insertions, 0 deletions
diff --git a/scripts/dpkg-scansources.pl b/scripts/dpkg-scansources.pl new file mode 100755 index 0000000..da19ba7 --- /dev/null +++ b/scripts/dpkg-scansources.pl @@ -0,0 +1,326 @@ +#!/usr/bin/perl +# +# Copyright © 1999 Roderick Schertler +# Copyright © 2002 Wichert Akkerman <wakkerma@debian.org> +# Copyright © 2006-2009, 2011-2015 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 Getopt::Long qw(:config posix_default bundling_values no_ignorecase); +use List::Util qw(any); +use File::Find; + +use Dpkg (); +use Dpkg::Gettext; +use Dpkg::ErrorHandling; +use Dpkg::Control; +use Dpkg::Checksums; +use Dpkg::Compression::FileHandle; +use Dpkg::Compression; + +textdomain('dpkg-dev'); + +# Hash of lists. The constants below describe what is in the lists. +my %override; +use constant { + O_PRIORITY => 0, + O_SECTION => 1, + O_MAINT_FROM => 2, # undef for non-specific, else listref + O_MAINT_TO => 3, # undef if there's no maint override +}; + +my %extra_override; + +my %priority = ( + 'extra' => 1, + 'optional' => 2, + 'standard' => 3, + 'important' => 4, + 'required' => 5, +); + +# Switches + +my $debug = 0; +my $no_sort = 0; +my $src_override = undef; +my $extra_override_file = undef; +my @sources; + +my @option_spec = ( + 'debug!' => \$debug, + 'help|?' => sub { usage(); exit 0; }, + 'version' => sub { version(); exit 0; }, + 'no-sort|n' => \$no_sort, + 'source-override|s=s' => \$src_override, + 'extra-override|e=s' => \$extra_override_file, +); + +sub version { + printf g_("Debian %s version %s.\n"), $Dpkg::PROGNAME, $Dpkg::PROGVERSION; +} + +sub usage { + printf g_( +"Usage: %s [<option>...] <binary-path> [<override-file> [<path-prefix>]] > Sources + +Options: + -n, --no-sort don't sort by package before outputting. + -e, --extra-override <file> + use extra override file. + -s, --source-override <file> + use file for additional source overrides, default + is regular override file with .src appended. + --debug turn debugging on. + -?, --help show this help message. + --version show the version. + +See the man page for the full documentation. +"), $Dpkg::PROGNAME; +} + +sub load_override { + my $file = shift; + local $_; + + my $comp_file = Dpkg::Compression::FileHandle->new(filename => $file); + while (<$comp_file>) { + s/#.*//; + next if /^\s*$/; + s/\s+$//; + + my @data = split ' ', $_, 4; + unless (@data == 3 || @data == 4) { + warning(g_('invalid override entry at line %d (%d fields)'), + $., 0 + @data); + next; + } + my ($package, $priority, $section, $maintainer) = @data; + if (exists $override{$package}) { + warning(g_('ignoring duplicate override entry for %s at line %d'), + $package, $.); + next; + } + if (!$priority{$priority}) { + warning(g_('ignoring override entry for %s, invalid priority %s'), + $package, $priority); + next; + } + + $override{$package} = []; + $override{$package}[O_PRIORITY] = $priority; + $override{$package}[O_SECTION] = $section; + if (!defined $maintainer) { + # do nothing + } elsif ($maintainer =~ /^(.*\S)\s*=>\s*(.*)$/) { + $override{$package}[O_MAINT_FROM] = [split m{\s*//\s*}, $1]; + $override{$package}[O_MAINT_TO] = $2; + } else { + $override{$package}[O_MAINT_TO] = $maintainer; + } + } + close($comp_file); +} + +sub load_src_override { + my ($user_file, $regular_file) = @_; + my ($file); + local $_; + + if (defined $user_file) { + $file = $user_file; + } elsif (defined $regular_file) { + my $comp = compression_guess_from_filename($regular_file); + if (defined($comp)) { + $file = $regular_file; + my $ext = compression_get_file_extension($comp); + $file =~ s/\.$ext$/.src.$ext/; + } else { + $file = "$regular_file.src"; + } + return unless -e $file; + } else { + return; + } + + debug(1, "source override file $file"); + my $comp_file = Dpkg::Compression::FileHandle->new(filename => $file); + while (<$comp_file>) { + s/#.*//; + next if /^\s*$/; + s/\s+$//; + + my @data = split ' '; + unless (@data == 2) { + warning(g_('invalid source override entry at line %d (%d fields)'), + $., 0 + @data); + next; + } + + my ($package, $section) = @data; + my $key = "source/$package"; + if (exists $override{$key}) { + warning(g_('ignoring duplicate source override entry for %s at line %d'), + $package, $.); + next; + } + $override{$key} = []; + $override{$key}[O_SECTION] = $section; + } + close($comp_file); +} + +sub load_override_extra +{ + my $extra_override = shift; + my $comp_file = Dpkg::Compression::FileHandle->new(filename => $extra_override); + + while (<$comp_file>) { + s/\#.*//; + s/\s+$//; + next unless $_; + + my ($p, $field, $value) = split(/\s+/, $_, 3); + $extra_override{$p}{$field} = $value; + } + close($comp_file); +} + +# Given PREFIX and DSC-FILE, process the file and returns the fields. + +sub process_dsc { + my ($prefix, $file) = @_; + + my $basename = $file; + my $dir = ($basename =~ s{^(.*)/}{}) ? $1 : ''; + $dir = "$prefix$dir"; + $dir =~ s{/+$}{}; + $dir = '.' if $dir eq ''; + + # Parse ‘.dsc’ file. + my $fields = Dpkg::Control->new(type => CTRL_PKG_SRC); + $fields->load($file); + $fields->set_options(type => CTRL_INDEX_SRC); + + # Get checksums + my $checksums = Dpkg::Checksums->new(); + $checksums->add_from_file($file, key => $basename); + $checksums->add_from_control($fields, use_files_for_md5 => 1); + + my $source = $fields->{Source}; + my @binary = split /\s*,\s*/, $fields->{Binary} // ''; + + error(g_('no binary packages specified in %s'), $file) unless (@binary); + + # Rename the source field to package. + $fields->{Package} = $fields->{Source}; + delete $fields->{Source}; + + # The priority for the source package is the highest priority of the + # binary packages it produces. + my @binary_by_priority = sort { + ($override{$a} ? $priority{$override{$a}[O_PRIORITY]} : 0) + <=> + ($override{$b} ? $priority{$override{$b}[O_PRIORITY]} : 0) + } @binary; + my $priority_override = $override{$binary_by_priority[-1]}; + my $priority = $priority_override + ? $priority_override->[O_PRIORITY] + : undef; + $fields->{Priority} = $priority if defined $priority; + + # For the section override, first check for a record from the source + # override file, else use the regular override file. + my $section_override = $override{"source/$source"} || $override{$source}; + my $section = $section_override + ? $section_override->[O_SECTION] + : undef; + $fields->{Section} = $section if defined $section; + + # For the maintainer override, use the override record for the first + # binary. Modify the maintainer if necessary. + my $maintainer_override = $override{$binary[0]}; + if ($maintainer_override && defined $maintainer_override->[O_MAINT_TO]) { + if (!defined $maintainer_override->[O_MAINT_FROM] || + any { $fields->{Maintainer} eq $_ } + @{ $maintainer_override->[O_MAINT_FROM] }) { + $fields->{Maintainer} = $maintainer_override->[O_MAINT_TO]; + } + } + + # Process extra override + if (exists $extra_override{$source}) { + my ($field, $value); + while (($field, $value) = each %{$extra_override{$source}}) { + $fields->{$field} = $value; + } + } + + # A directory field will be inserted just before the files field. + $fields->{Directory} = $dir; + + $checksums->export_to_control($fields, use_files_for_md5 => 1); + + push @sources, $fields; +} + +### Main + +{ + local $SIG{__WARN__} = sub { usageerr($_[0]) }; + GetOptions(@option_spec); +} + +usageerr(g_('one to three arguments expected')) + if @ARGV < 1 or @ARGV > 3; + +push @ARGV, undef if @ARGV < 2; +push @ARGV, '' if @ARGV < 3; +my ($dir, $override, $prefix) = @ARGV; + +report_options(debug_level => $debug); + +load_override $override if defined $override; +load_src_override $src_override, $override; +load_override_extra $extra_override_file if defined $extra_override_file; + +my @dsc; +my $scan_dsc = sub { + push @dsc, $File::Find::name if m/\.dsc$/; +}; + +find({ follow => 1, follow_skip => 2, wanted => $scan_dsc }, $dir); +foreach my $fn (@dsc) { + # FIXME: Fix it instead to not die on syntax and general errors? + eval { + process_dsc($prefix, $fn); + }; + if ($@) { + warn $@; + next; + } +} + +if (not $no_sort) { + @sources = sort { + $a->{Package} . $a->{Version} cmp $b->{Package} . $b->{Version} + } @sources; +} +foreach my $dsc (@sources) { + $dsc->output(\*STDOUT); + print "\n"; +} |