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generate_sbom
executable file
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generate_sbom
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#!/usr/bin/perl
################################################################
#
# Copyright (c) 2023 SUSE Linux LLC
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 or 3 as
# published by the Free Software Foundation.
#
# 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 (see the file COPYING); if not, write to the
# Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
#
################################################################
BEGIN {
unshift @INC, ($::ENV{'BUILD_DIR'} || '/usr/lib/build');
}
use strict;
use File::Find;
use File::Temp;
use Digest::SHA;
use Digest::MD5;
use Build;
use Build::Rpm;
use Build::Deb;
use Build::SimpleJSON;
use Build::SPDX;
use Build::IntrospectGolang;
use Build::IntrospectRust;
my $tool_name = 'obs_build_generate_sbom';
my $tool_version = '1.1';
my $config = {};
sub unify {
my %h = map {$_ => 1} @_;
return grep(delete($h{$_}), @_);
}
sub urlencode {
my ($str, $iscgi) = @_;
if ($iscgi) {
$str =~ s/([\000-\037<>;\"#\?&\+=%[\177-\377])/sprintf("%%%02X",ord($1))/sge;
$str =~ tr/ /+/;
} else {
$str =~ s/([\000-\040<>;\"#\?&\+=%[\177-\377])/sprintf("%%%02X",ord($1))/sge;
}
return $str;
}
sub rfc3339time {
my ($t) = @_;
my @gt = gmtime($t || time());
return sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ", $gt[5] + 1900, $gt[4] + 1, @gt[3,2,1,0];
}
sub sha256file {
my ($fn) = @_;
my $ctx = Digest::SHA->new(256);
eval { $ctx->addfile($fn) };
die("$fn: $@\n") if $@;
return $ctx->hexdigest();
}
sub system_chroot {
my ($root, @args) = @_;
my $pid = 0;
if ($args[0] eq 'exec') {
shift @args;
} else {
$pid = fork();
die("fork: $!\n") unless defined $pid;
}
if (!$pid) {
if ($args[0] eq 'quiet') {
shift @args;
open(STDOUT, '>>', '/dev/null');
open(STDERR, '>>', '/dev/null');
}
if ($args[0] eq 'stdout') {
open(STDOUT, '>', $args[1]) || die("$args[1]: $!\n");
splice(@args, 0, 2);
}
!$root || chroot($root) || die("chroot $root: $!\n");
exec(@args);
die("exec $args[0]: $!\n");
}
die unless waitpid($pid, 0) == $pid;
return $?;
}
sub popen_chroot {
my ($root, @args) = @_;
my $fd;
if (!$root) {
open($fd, '-|', @args) || die("open: $!\n");
return $fd;
}
my $pid = open($fd, '-|');
die("open: $!\n") unless defined $pid;
if ($pid == 0) {
!$root || chroot($root) || die("chroot $root: $!\n");
exec(@args);
die("exec $args[0]: $!\n");
}
return $fd;
}
sub can_run {
my ($root, $fname) = @_;
return 0 if $root && $>;
return -x "$root$fname";
}
sub systemq {
my $pid = fork();
die("fork: $!\n") unless defined $pid;
if (!$pid) {
open(STDOUT, '>', '/dev/null') || die("/dev/null: $!\n");
exec @_;
die("$_[0]: $!\n");
}
waitpid($pid, 0) == $pid || die("waitpid: $!\n");
exit($?) if $?;
}
##################################################################################################
#
# Container unpacking
#
sub uncompress_container {
my ($container, $outfile) = @_;
my @decompressor;
if ($container =~ /\.tar$/) {
push @decompressor, 'cat';
} elsif ($container =~ /\.tar\.gz$/) {
push @decompressor, 'gunzip';
} elsif ($container =~ /\.tar\.xz$/) {
push @decompressor, 'xzdec';
} else {
die("$container: unknown format\n");
}
my $pid = fork();
die("fork: $!\n") unless defined $pid;
if (!$pid) {
open(STDIN, '<', $container) || die("$container: $!\n");
open(STDOUT, '>', $outfile) || die("$outfile: $!\n");
exec @decompressor;
die("$decompressor[0]: $!\n");
}
waitpid($pid, 0) == $pid || die("waitpid: $!\n");
exit($?) if $?;
}
sub unpack_container {
my ($dir, $container) = @_;
uncompress_container($container, "$dir/cont");
systemq('skopeo', 'copy', "docker-archive:$dir/cont", "oci:$dir/image:latest");
unlink("$dir/cont");
my @rootless;
push @rootless, '--rootless' if $>;
systemq('umoci', 'unpack', @rootless, '--image', "$dir/image:latest", "$dir/unpack");
return "$dir/unpack/rootfs";
}
##################################################################################################
#
# Filelist generation and file introspection
#
sub detect_mime {
my ($filename) = @_;
my $fd;
return undef unless open($fd, '<', $filename);
my $prefix = '';
if (read($fd, $prefix, 64) >= 8) {
my $first = unpack('N', $prefix);
if ($first == 0x7f454c46) {
my $t = unpack('@16n', $prefix);
return 'application/x-sharedlib' if $t == 0x0300 || $t == 0x0003;
return 'application/x-elf';
}
if ($first == 0xcafebabe && unpack('@7C', $prefix) < 20) {
return 'application/x-mach-binary'; # fat macho
}
if ($first == 0xfeedface || $first == 0xfeedfacf || $first == 0xcefaedfe || $first == 0xcffaedfe) {
return 'application/x-mach-binary';
}
if (($first & 0xffff0000) == 0x4d5a0000) {
my $o = unpack('@60V', $prefix);
my $type = '';
if (seek($fd, $o, 0) && read($fd, $type, 4) == 4 && unpack('N', $type) == 0x50450000) {
return 'application/vnd.microsoft.portable-executable';
}
}
}
close($fd);
return undef;
}
sub gen_filelist {
my ($dir) = @_;
my $fd;
my $pid = open($fd, '-|');
die("fork: $!\n") unless defined $pid;
if (!$pid) {
chdir($dir) || die("chdir $!\n");
exec('find', '-print0');
die("find: $!\n");
}
local $/ = "\0";
my @files = <$fd>;
chomp @files;
close($fd) || die("find: $?\n");
$_ =~ s/^\.\//\// for @files;
$_ = {'name' => $_} for @files;
for my $f (@files) {
if (-l "$dir$f->{'name'}" || ! -f _) {
$f->{'SKIP'} = 1;
next;
}
my $mime = detect_mime("$dir/$f->{'name'}");
$f->{'mime'} = $mime if $mime;
$f->{'sha256sum'} = sha256file("$dir/$f->{'name'}");
}
@files = sort {$a->{'name'} cmp $b->{'name'}} @files;
return \@files;
}
sub add_golang_mod {
my ($m, $exeinfos) = @_;
my $g = $exeinfos->{"golang:$m->{'path'}\@\@$m->{'version'}"};
return $g if $g;
$g = { 'NAME' => $m->{'path'}, 'VERSION' => $m->{'version'}, 'pkgtype' => 'golang' };
$exeinfos->{"golang:$m->{'path'}\@\@$m->{'version'}"} = $g;
return $g;
}
sub introspect_golang_exe {
my ($fd, $fname, $exeinfos) = @_;
my $buildinfo = Build::IntrospectGolang::buildinfo($fd);
return unless $buildinfo && $buildinfo->{'main'};
my $g = add_golang_mod($buildinfo->{'main'}, $exeinfos);
push @{$g->{'filenames'}}, $fname;
my @deps = @{$g->{'deps'} || []};
if ($buildinfo->{'goversion'}) {
my $gg = add_golang_mod({'path' => 'stdlib', 'version' => $buildinfo->{'goversion'}}, $exeinfos);
push @{$gg->{'filenames'}}, $fname;
push @deps, $gg unless grep {$_ eq $gg} @deps;
}
for my $dep (@{$buildinfo->{'deps'} || []}) {
my $gg = add_golang_mod($dep, $exeinfos);
push @{$gg->{'filenames'}}, $fname;
push @deps, $gg unless grep {$_ eq $gg} @deps;
}
$g->{'deps'} = \@deps if @deps;
}
sub add_rust_pkg {
my ($m, $exeinfos) = @_;
my $g = $exeinfos->{"rust:$m->{'name'}\@\@$m->{'version'}"};
return $g if $g;
$g = { 'NAME' => $m->{'name'}, 'VERSION' => $m->{'version'}, 'pkgtype' => 'rust' };
$exeinfos->{"rust:$m->{'name'}\@\@$m->{'version'}"} = $g;
return $g;
}
sub introspect_rust_exe {
my ($fd, $fname, $exeinfos) = @_;
my $versioninfo = Build::IntrospectRust::versioninfo($fd);
return unless $versioninfo && $versioninfo->{'packages'};
for my $p (@{$versioninfo->{'packages'}}) {
next unless ($p->{'kind'} || 'runtime') eq 'runtime';
my $gg = add_rust_pkg($p, $exeinfos);
push @{$gg->{'filenames'}}, $fname;
my @deps = @{$gg->{'deps'} || []};
for my $dep (@{$p->{'dependencies'} || []}) {
my $d = int($dep);
next if $d < 0 || $d >= @{$versioninfo->{'packages'}};
my $p2 = $versioninfo->{'packages'}->[$d];
next unless ($p2->{'kind'} || 'runtime') eq 'runtime';
my $gg2 = add_rust_pkg($p2, $exeinfos);
next if $gg2 == $gg;
push @deps, $gg2 unless grep {$_ eq $gg2} @deps;
}
$gg->{'deps'} = \@deps if @deps;
}
}
sub introspect_filelist {
my ($dir, $files) = @_;
return undef unless $files;
my %exeinfos;
for my $f (@$files) {
my $mime = $f->{'mime'};
next unless $mime && ($mime eq 'application/x-sharedlib' || $mime eq 'application/x-elf');
my $fd;
next unless open($fd, '<', "$dir/$f->{'name'}");
eval { introspect_golang_exe($fd, $f->{'name'}, \%exeinfos) };
warn($@) if $@;
eval { introspect_rust_exe($fd, $f->{'name'}, \%exeinfos) };
warn($@) if $@;
}
return [ map {$exeinfos{$_}} sort keys %exeinfos ];
}
##################################################################################################
#
# RPM package database support
#
sub dump_rpmdb {
my ($root, $outfile) = @_;
my $dbpath;
for my $phase (0, 1) {
if (can_run($root, '/usr/bin/rpmdb')) {
# check if we have the exportdb option
if (system_chroot($root, 'quiet', '/usr/bin/rpmdb', '--exportdb', '--version') == 0) {
if ($dbpath) {
system_chroot($root, 'stdout', $outfile, '/usr/bin/rpmdb', '--dbpath', $dbpath, '--exportdb');
} else {
system_chroot($root, 'stdout', $outfile, '/usr/bin/rpmdb', '--exportdb');
}
exit($?) if $?;
return;
}
}
# try to get the dbpath from the root if we can
if (!$dbpath && can_run($root, '/usr/bin/rpm')) {
my $fd = popen_chroot($root, '/usr/bin/rpm', '--eval', '%_dbpath');
my $path = <$fd>;
close($fd);
chomp $path;
$dbpath = $path if $path && $path =~ /^\//;
}
$dbpath ||= '/usr/lib/sysimage/rpm' if -e "$root/usr/lib/sysimage/rpm/Packages" || -e "$root/usr/lib/sysimage/rpm/Package.db";
$dbpath ||= '/var/lib/rpm'; # guess
# try to dump with rpmdb_dump
if (-s "$root$dbpath/Packages" && can_run($root, '/usr/lib/rpm/rpmdb_dump')) {
my $outfh;
open($outfh, '>', $outfile) || die("$outfile: $!\n");
my $fd = popen_chroot($root, '/usr/lib/rpm/rpmdb_dump', "$dbpath/Packages");
while (<$fd>) {
next unless /^\s*[0-9a-fA-F]{8}/;
chomp;
my $v = <$fd>;
die("unexpected EOF\n") unless $v;
chomp $v;
substr($v, 0, 1, '') while substr($v, 0, 1) eq ' ';
$v = pack('H*', $v);
next if length($v) < 16;
my ($il, $dl) = unpack('NN', $v);
die("bad header length\n") unless length($v) == 8 + $il * 16 + $dl;
die("print: $!\n") unless print $outfh pack('H*', '8eade80100000000');
die("print: $!\n") unless print $outfh $v;
}
close($fd) || die("rpmdb_dump: $!\n");
close($outfh) || die("close: $!\n");
return;
}
last unless $root;
# try with the system rpm and a dbpath
$dbpath = "$root$dbpath";
$root = '';
}
die("could not dump rpm database\n");
}
sub read_rpm {
my ($rpm) = @_;
my %r = Build::Rpm::rpmq($rpm, qw{NAME VERSION RELEASE EPOCH ARCH LICENSE SOURCERPM DISTURL FILENAMES URL VENDOR FILEMODES FILEDIGESTS FILEDIGESTALGO SIGMD5});
delete $r{$_} for qw{BASENAMES DIRNAMES DIRINDEXES}; # save mem
for (qw{NAME VERSION RELEASE EPOCH ARCH LICENSE SOURCERPM DISTURL URL VENDOR FILEDIGESTALGO SIGMD5}) {
next unless $r{$_};
die("bad rpm entry for $_\n") unless ref($r{$_}) eq 'ARRAY' && @{$r{$_}} == 1;
$r{$_} = $r{$_}->[0];
}
delete $r{'LICENSE'} if $r{'NAME'} eq 'gpg-pubkey' && ($r{'LICENSE'} || '') eq 'pubkey';
return \%r;
}
sub read_pkgs_rpmdb {
my ($rpmhdrs) = @_;
my $fd;
open($fd, '<', $rpmhdrs) || die("$rpmhdrs: $!\n");
my @rpms;
while (1) {
my $hdr = '';
last unless read($fd, $hdr, 16) == 16;
my ($il, $dl) = unpack('@8NN', $hdr);
die("bad rpm header\n") unless $il && $dl;
die("bad rpm header\n") unless read($fd, $hdr, $il * 16 + $dl, 16) == $il * 16 + $dl;
push @rpms, read_rpm([ $hdr ]);
}
close($fd);
@rpms = sort {$a->{'NAME'} cmp $b->{'NAME'} || $a->{'VERSION'} cmp $b->{'VERSION'} || $a->{'RELEASE'} cmp $b->{'RELEASE'}} @rpms;
return \@rpms;
}
##################################################################################################
#
# Debian package database support
#
sub parse_debian_copyright_file {
my ($root, $pkg) = @_;
my $file = "$root/usr/share/doc/$pkg/copyright";
local *F;
return {} unless open(F, '<', $file);
my $firstline = <F>;
return {} unless $firstline && $firstline =~ /^Format: https?:\/\/www.debian.org\/doc\/packaging-manuals\/copyright-format\/1.0\//;
my $crfound = 0;
my @copyright;
my @license;
while(<F>) {
chomp;
s/\s+$//;
if (/^Copyright:\s*(.*)$/) {
$crfound = 1;
push @copyright, $1 if $1 ne '';
} elsif (/^License:\s*(.*)$/) {
$crfound = 0;
push @license, $1 if $1 ne '';
} elsif (/^(Files|Comment|Disclaimer|Source|Upstream-Name|Upstream-Contact):/) {
$crfound = 0;
} elsif (/^\s{1,}(.*)$/ and $crfound) {
push @copyright, $1;
}
}
close F;
@copyright = unify(@copyright);
@copyright = grep {!/^(\*No copyright\*|No copyright|none|\*unknown\*|unknown)$/} @copyright;
@license = unify(@license);
my %ret;
$ret{'copyright'} = join('\n ', sort @copyright) if @copyright;
$ret{'license'} = join(' AND ', sort @license) if @license;
return \%ret;
}
sub read_deb {
my ($root, $ctrl) = @_;
my %res = Build::Deb::control2res($ctrl);
return undef unless defined($res{'PACKAGE'}) && defined($res{'VERSION'});
my %data;
$data{'NAME'} = $res{'PACKAGE'};
$data{'EVR'} = $res{'VERSION'};
if ($res{'VERSION'} =~ /^(?:(\d+):)?(.*?)(?:-([^-]*))?$/s) {
$data{'EPOCH'} = $1 if defined $1;
$data{'VERSION'} = $2;
$data{'RELEASE'} = $3 if defined $3;
}
$data{'ARCH'} = $res{'ARCHITECTURE'} if defined $res{'ARCHITECTURE'};
$data{'URL'} = $res{'HOMEPAGE'} if defined $res{'HOMEPAGE'};
$data{'MAINTAINER'} = $res{'MAINTAINER'} if defined $res{'MAINTAINER'};
my $license = parse_debian_copyright_file($root, $data{'NAME'});
$data{'LICENSE'} = $license->{'license'} if defined $license->{'license'};
$data{'COPYRIGHTTEXT'} = $license->{'copyright'} if defined $license->{'copyright'};
if ($res{'STATIC-BUILT-USING'}) {
$data{'BUILT_USING'} = [ split /,\s*/, $res{'STATIC-BUILT-USING'} ];
} elsif ($res{'BUILT-USING'}) {
$data{'BUILT_USING'} = [ split /,\s*/, $res{'BUILT-USING'} ];
}
return \%data;
}
sub read_deb_bu {
my ($root, $name, $evr) = @_;
my %data = ( 'NAME' => $name, 'EVR' => $evr );
if ($evr =~ /^(?:(\d+):)?(.*?)(?:-([^-]*))?$/s) {
$data{'EPOCH'} = $1 if defined $1;
$data{'VERSION'} = $2;
$data{'RELEASE'} = $3 if defined $3;
}
my $license = parse_debian_copyright_file($root, $name);
$data{'LICENSE'} = $license->{'license'} if defined $license->{'license'};
$data{'COPYRIGHTTEXT'} = $license->{'copyright'} if defined $license->{'copyright'};
return \%data;
}
sub read_pkgs_deb {
my ($root) = @_;
my $vendorstring = Build::Rpm::expandmacros($config, '%?vendor');
my @pkgs;
local *F;
my %seen_pkg;
my @bupkgs;
if (open(F, '<', "$root/var/lib/dpkg/status")) {
my $ctrl = '';
while(<F>) {
if ($_ eq "\n") {
my $data = read_deb($root, $ctrl);
if ($data) {
$data->{'VENDOR'} = $vendorstring if $vendorstring;
push @pkgs, $data;
$seen_pkg{"$data->{'NAME'}-$data->{'EVR'}"} = 1;
push @bupkgs, @{$data->{'BUILT_USING'}} if $data->{'BUILT_USING'};
}
$ctrl = '';
next;
}
$ctrl .= $_;
}
close F;
}
# create stubs for missing BUILT_USING packages
for my $bd (@bupkgs) {
next unless $bd =~ /(.+)\s+\(\s*=\s*(.+)\s*\)/;
next if $seen_pkg{"$1-$2"};
my $data = read_deb_bu($root, $1, $2);
if ($data) {
$data->{'VENDOR'} = $vendorstring if $vendorstring;
push @pkgs, $data;
$seen_pkg{"$data->{'NAME'}-$data->{'EVR'}"} = 1;
}
}
return \@pkgs;
}
##################################################################################################
#
# Product support
#
sub read_pkgs_from_product_directory {
my ($dir) = @_;
my @rpms;
my $addrpmfile = sub {
my $fn = $File::Find::name;
push @rpms, read_rpm($fn) if $fn =~ /\.rpm$/;
};
find({'wanted' => $addrpmfile, 'no_chdir' => 1}, $dir);
return \@rpms;
}
sub read_pkgs_from_rpmmd {
my ($primaryfile) = @_;
require Build::Rpmmd;
my $fh;
if ($primaryfile =~ /\.gz$/) {
open($fh, '-|', 'gunzip', '-dc', $primaryfile) || die("$primaryfile: $!\n");
} else {
open($fh, '<', $primaryfile) || die("$primaryfile: $!\n");
}
my @rpms;
for my $pkg (@{Build::Rpmmd::parse($fh, undef, 'withlicense' => 1, 'withchecksum' => 1, 'withvendor' => 1, 'withurl' => 1)}) {
my $r = {};
for (qw{name epoch version release arch url vendor sourcerpm license checksum}) {
$r->{uc($_)} = $pkg->{$_} if defined $pkg->{$_};
}
push @rpms, $r;
}
close($fh);
return \@rpms;
}
##################################################################################################
#
# Small helpers
#
sub read_dist {
my ($dir) = @_;
my %dist;
my $fd;
if (open($fd, '<', "$dir/etc/os-release") || open($fd, '<', "$dir/usr/lib/os-release")) {
while(<$fd>) {
chomp;
next unless /\s*(\S+)=(.*)/;
my $k = lc($1);
my $v = $2;
$v =~ s/\s+$//;
$v =~ s/^\"(.*)\"$/$1/;
if ($k eq 'id_like') {
push @{$dist{$k}}, $v;
} else {
$dist{$k} = $v;
}
}
close($fd);
}
return %dist ? \%dist : undef;
}
sub pkgtype_from_dist {
my ($dist) = @_;
return 'rpm' unless $dist && $dist->{'id'};
return 'deb' if $dist->{'id'} eq 'debian';
return 'deb' if grep { $_ eq "debian" } @{$dist->{'id_like'} || []};
return 'rpm';
}
sub gen_purl {
my ($p, $distro, $pkgtype) = @_;
my $name = $p->{'NAME'};
my $vr = $p->{'VERSION'};
$vr =~ s/^go// if $pkgtype eq 'golang' && $name eq 'stdlib';
my $purltype = $pkgtype eq 'rust' ? 'cargo' : $pkgtype;
my $subpath;
if ($pkgtype eq 'golang' && $name =~ /\A([^\/]+\/[^\/]+\/[^\/]+)\/(.+)/s) {
$name = $1;
$subpath = $2;
}
$vr = "$vr-$p->{'RELEASE'}" if defined $p->{'RELEASE'};
my $vendor = '';
if ($p->{'VENDOR'}) {
$vendor = lc($p->{'VENDOR'});
$vendor =~ s/obs:\/\///; # third party OBS builds
$vendor =~ s/\ .*//; # eg. SUSE LLC...
$vendor =~ s/\/?$/\//;
}
my $purlurl = "pkg:".urlencode("$purltype/$vendor$name\@$vr").'?';
$purlurl .= '&epoch='.urlencode($p->{'EPOCH'}) if $p->{'EPOCH'};
$purlurl .= '&arch='.urlencode($p->{'ARCH'}) if $p->{'ARCH'};
$purlurl .= '&upstream='.urlencode($p->{'SOURCERPM'}) if $p->{'SOURCERPM'};
$purlurl .= '&distro='.urlencode($distro) if $distro;
$purlurl =~ s/\?\&/\?/;
$purlurl =~ s/\?$//;
$purlurl .= '#'.urlencode($subpath) if defined $subpath;
return $purlurl;
}
sub gen_uuid {
my $uuid = pack('H*', '1e9d579964de4594a4e835719a1c259f'); # uuid ns
$uuid = substr(Digest::SHA::sha1($uuid . Build::SimpleJSON::unparse($_[0], 'keepspecial' => 1)), 0, 16);
substr($uuid, 6, 1, pack('C', unpack('@6C', $uuid) & 0x0f | 0x50));
substr($uuid, 8, 1, pack('C', unpack('@8C', $uuid) & 0x3f | 0x80));
return join('-', unpack("H8H4H4H4H12", $uuid));
}
sub gen_pkg_id {
my ($p) = @_;
if ($p->{'SIGMD5'}) {
return unpack('H*', $p->{'SIGMD5'});
} elsif ($p->{'CHECKSUM'}) {
my $id = $p->{'CHECKSUM'};
$id =~ s/.*://;
return substr($id, 0, 32);
}
my %p = %$p;
delete $p{'RELATION'};
delete $p{'deps'};
return Digest::MD5::md5_hex(Build::SimpleJSON::unparse(\%p));
}
##################################################################################################
#
# CycloneDX support
#
my $cyclonedx_json_template_supplier = {
'_order' => [ qw{bom-ref name address url contact} ],
'contact' => { '_order' => [ qw{name email} ] },
};
my $cyclonedx_json_template_component = {
'_order' => [ qw{bom-ref type supplier manufacturer authors name version description cpe purl externalReferences properties } ],
'externalReferences' => { '_order' => [ qw{url comment type} ] },
'supplier' => $cyclonedx_json_template_supplier,
'manufacturer' => $cyclonedx_json_template_supplier,
};
my $cyclonedx_json_template = {
'_order' => [ qw{bomFormat specVersion serialNumber version metadata components services externalReferences dependencies compositions vulnerabilities signature} ],
'version' => 'number',
'metadata' => {
'_order' => [ qw{timestamp tools manufacturer authors component supplier} ],
'tools' => { '_order' => [ qw{vendor name version } ] }.
'component' => $cyclonedx_json_template_component,
'supplier' => $cyclonedx_json_template_supplier,
'manufacturer' => $cyclonedx_json_template_supplier,
},
'components' => $cyclonedx_json_template_component,
'dependencies' => { '_order' => [ qw{ref dependsOn} ] }
};
sub cyclonedx_encode_pkg {
my ($p, $distro, $pkgtype) = @_;
my $vr = $p->{'VERSION'};
$vr = "$vr-$p->{'RELEASE'}" if defined $p->{'RELEASE'};
my $cyc = { 'type' => 'library', 'name' => $p->{'NAME'}, 'version' => $vr };
$cyc->{'publisher'} = $p->{'VENDOR'} if $p->{'VENDOR'};
my $license = $p->{'LICENSE'};
if ($license) {
$license = Build::SPDX::normalize_license($license);
if (defined $license) {
if ($license =~ /\s+/) {
push @{$cyc->{'licenses'}}, { 'expression' => $license };
} else {
push @{$cyc->{'licenses'}}, { 'license' => {'id' => $license } };
}
} else {
# non-standard (sub-)license found, normalize and encode as name
$license = Build::SPDX::normalize_license($p->{'LICENSE'}, sub { $_[0] }, sub { $_[0] });
push @{$cyc->{'licenses'}}, { 'license' => {'name' => $license } };
}
}
my $purlurl = gen_purl($p, $distro, $pkgtype);
$cyc->{'purl'} = $purlurl if $purlurl;
if (!$p->{'cyc_id'}) {
$p->{'cyc_id'} = "$p->{'NAME'}-" . gen_pkg_id($p);
$p->{'cyc_id'} =~ s/[^a-zA-Z0-9\.\-]/-/g;
$p->{'cyc_id'} = "pkg:$pkgtype/$p->{'cyc_id'}";
}
$cyc->{'bom-ref'} = $p->{'cyc_id'};
return $cyc;
}
sub cyclonedx_encode_dist {
my ($dist) = @_;
my $cyc = {
'type' => 'operating-system',
'name' => $dist->{'id'},
};
$cyc->{'version'} = $dist->{'version_id'} if defined($dist->{'version_id'}) && $dist->{'version_id'} ne '';
$cyc->{'description'} = $dist->{'pretty_name'} if $dist->{'pretty_name'};
push @{$cyc->{'externalReferences'}}, { 'url' => $dist->{'bug_report_url'}, 'type' => 'issue-tracker' } if $dist->{'bug_report_url'};
push @{$cyc->{'externalReferences'}}, { 'url' => $dist->{'home_url'}, 'type' => 'website' } if $dist->{'home_url'};
return $cyc;
}
sub cyclonedx_encode_relations {
my ($p) = @_;
return unless $p->{'cyc_id'};
my @r = grep {$_->[0]->{'cyc_id'} && $_->[1] eq 'DEPENDS_ON'} @{$p->{'RELATION'} || []};
return unless @r;
my $cyc = {
'ref' => $p->{'cyc_id'},
'dependsOn' => [ map {$_->[0]->{'cyc_id'}} @r ],
};
return $cyc;
}
sub cyclonedx_encode_header {
my ($subjectname, $type) = @_;
my $cyc = {
'bomFormat' => 'CycloneDX',
'specVersion' => '1.5',
'version' => 1,
'metadata' => {
'timestamp' => rfc3339time(time()),
'tools' => [ {'name' => $tool_name, 'version' => $tool_version } ],
'component' => { 'bom-ref' => 'root', 'type' => ($type || 'application'), 'name' => $subjectname },
},
};
return $cyc;
}
##################################################################################################
#
# SPDX support
#
my $spdx_json_template = {
'_order' => [ qw{spdxVersion dataLicense SPDXID name documentNamespace creationInfo packages files hasExtractedLicensingInfos relationships} ],
'creationInfo' => {
'_order' => [ qw{created creators licenseListVersion} ],
},
'packages' => {
'_order' => [ qw{name SPDXID versionInfo supplier originator downloadLocation sourceInfo homepage licenseConcluded licenseDeclared copyrightText externalRefs} ],
'externalRefs' => {
'_order' => [ qw{referenceCategory referenceType referenceLocator} ],
},
},
'files' => {
'_order' => [ qw{fileName SPDXID fileTypes checksums licenseConcluded licenseInfoInFiles copyrightText comment} ],
},
'hasExtractedLicensingInfos' => {
'_order' => [ qw{licenseId extractedText} ],
},
'relationships' => {
'_order' => [ qw{spdxElementId relatedSpdxElement relationshipType} ],
},
};
sub spdx_encode_unknown_license {
my ($name, $unknown_spdx_licenses) = @_;
my $l = $unknown_spdx_licenses->{lc($name)};
return $l->{'name'} if $l;
$l = {'name' => $name};
$l->{'name'} = "LicenseRef-".lc($name);
$l->{'name'} =~ s/[^a-zA-Z0-9\.\-]/-/g;
$l->{'text'} = $name;
$unknown_spdx_licenses->{lc($name)} = $l;
return $l->{'name'};
}
sub spdx_encode_extracted_license {
my ($l) = @_;
my $spdx = { 'licenseId' => $l->{'name'}, 'extractedText' => $l->{'text'} };
return $spdx;
}
sub spdx_encode_pkg {
my ($p, $distro, $pkgtype, $unknown_spdx_licenses) = @_;
my $vr = $p->{'VERSION'};
$vr = "$vr-$p->{'RELEASE'}" if defined $p->{'RELEASE'};
my $evr = $vr;
$evr = "$p->{'EPOCH'}:$evr" if $p->{'EPOCH'};
my $spdx = {
'name' => $p->{'NAME'},
'versionInfo' => $evr,
};
$spdx->{'supplier'} = 'NOASSERTION';
if ($p->{'VENDOR'}) {
$spdx->{'originator'} = "Organization: $p->{'VENDOR'}";
$spdx->{'supplier'} = $spdx->{'originator'}; # same as originator OBS-247
}
$spdx->{'downloadLocation'} = 'NOASSERTION';
if ($pkgtype eq 'deb') {
$spdx->{'sourceInfo'} = 'acquired package info from DPKG DB';
} elsif ($pkgtype eq 'rpm') {
$spdx->{'sourceInfo'} = 'acquired package info from RPM DB';
} elsif ($pkgtype eq 'golang') {
$spdx->{'sourceInfo'} = 'acquired package info from go module information';
} elsif ($pkgtype eq 'rust') {
$spdx->{'sourceInfo'} = 'acquired package info from rust cargo manifest';
}
if (($pkgtype eq 'golang' || $pkgtype eq 'rust') && @{$p->{'filenames'} || []}) {
$spdx->{'sourceInfo'} .= ': '.join(', ', @{$p->{'filenames'}});
}
$spdx->{'licenseConcluded'} = 'NOASSERTION';
$spdx->{'licenseDeclared'} = 'NOASSERTION';
my $license = $p->{'LICENSE'};
if ($license) {
$license = Build::SPDX::normalize_license($license , sub { spdx_encode_unknown_license($_[0], $unknown_spdx_licenses) }, undef);
$spdx->{'licenseConcluded'} = $license;
$spdx->{'licenseDeclared'} = $license unless ($config->{'buildflags:spdx-declared-license'} || '') eq 'NOASSERTION';
}
$spdx->{'copyrightText'} = $p->{'COPYRIGHTTEXT'} ? $p->{'COPYRIGHTTEXT'} : 'NOASSERTION';
$spdx->{'homepage'} = $p->{'URL'} if $p->{'URL'};
# Let the caller control the presence of external refs
if(!$p->{'skip_external_refs'}) {
my $purlurl = gen_purl($p, $distro, $pkgtype);
push @{$spdx->{'externalRefs'}}, { 'referenceCategory' => 'PACKAGE-MANAGER', 'referenceType' => 'purl', 'referenceLocator', $purlurl } if $purlurl;
}
$spdx->{'primaryPackagePurpose'} = $p->{'primaryPackagePurpose'} if $p->{'primaryPackagePurpose'};
if (!$p->{'spdx_id'}) {
my $spdxtype = "Package-$pkgtype";
$spdxtype = "Package-go-module" if $pkgtype eq 'golang';
$spdxtype = "Package-rust-crate" if $pkgtype eq 'rust';
$p->{'spdx_id'} = "SPDXRef-$spdxtype-$p->{'NAME'}-" . gen_pkg_id($p);
$p->{'spdx_id'} =~ s/[^a-zA-Z0-9\.\-]/-/g;
}
$spdx->{'SPDXID'} = $p->{'spdx_id'};
return $spdx;
}
sub spdx_encode_file {
my ($f) = @_;
my $spdx = {
'fileName' => $f->{'name'},
'licenseConcluded' => 'NOASSERTION',
'licenseInfoInFiles' => [ 'NOASSERTION' ],
'copyrightText' => '',
};
my $mime = $f->{'mime'};
if ($mime && ($mime eq 'application/x-sharedlib' || $mime eq 'application/x-elf' || $mime eq 'application/x-mach-binary' || $mime eq 'application/vnd.microsoft.portable-executable')) {
push @{$spdx->{'fileTypes'}}, 'BINARY';
}
my @chks;
push @chks, { 'algorithm' => 'SHA256', 'checksumValue' => $f->{'sha256sum'} } if $f->{'sha256sum'};
$spdx->{'checksums'} = \@chks if @chks;
if (!$f->{'spdx_id'}) {
my $fn = $f->{'name'};
$fn =~ s/\A\/+//s;
$fn =~ s/\/+\z//s;
if (length($fn) > 42) {
1 while length($fn) > 42 && $fn =~ s/.*?\///;
$fn = "...".substr($fn, -42);
}
$f->{'spdx_id'} = "SPDXRef-File-$fn-".Digest::MD5::md5_hex($f->{'name'}.($f->{'sha256sum'} || ''));
$f->{'spdx_id'} =~ s/[^a-zA-Z0-9\.\-]/-/g;
}
$spdx->{'SPDXID'} = $f->{'spdx_id'};
return $spdx;
}
sub spdx_encode_one_relation {
my ($p, $op, $type) = @_;
return unless $p->{'spdx_id'} && $op->{'spdx_id'};
return if $type eq 'DEPENDS_ON';
my $spdx = { 'spdxElementId' => $p->{'spdx_id'}, 'relatedSpdxElement' => $op->{'spdx_id'}, 'relationshipType' => $type };
if ($type ne 'DEPENDENCY_OF' && $type ne 'DESCRIBES' && $type ne 'CONTAINS') {
$spdx->{'relationshipType'} = 'OTHER';
$spdx->{'comment'} = $type;
}
return $spdx;
}
sub spdx_encode_relations {
my ($p) = @_;
return unless $p->{'spdx_id'};
return map {spdx_encode_one_relation($p, $_->[0], $_->[1])} @{$p->{'RELATION'} || []};
}
sub spdx_encode_header {
my ($subjectname) = @_;
my $spdx = {
'spdxVersion' => 'SPDX-2.3',
'dataLicense' => 'CC0-1.0',
'SPDXID' => 'SPDXRef-DOCUMENT',
'name' => $subjectname,
};
my $creationinfo = {
'created' => rfc3339time(time()),
'creators' => [ "Tool: $tool_name-$tool_version" ],
'licenseListVersion' => $Build::SPDX::licenseListVersion,
};
$spdx->{'creationInfo'} = $creationinfo;
return $spdx;
}
sub spdx_encode_dist {
my ($dist) = @_;
return spdx_encode_pkg({
NAME => $dist->{id},
VERSION => $dist->{version_id},
spdx_id => sprintf('SPDXRef-OperatingSystem-%s', gen_pkg_id($dist)),
primaryPackagePurpose => 'OPERATING-SYSTEM',
skip_external_refs => 1
}, undef, undef, {});
}
##################################################################################################
#
# Main
#
sub echo_help {
print "\n
The Software Bill of Materials (SBOM) generation tool
=====================================================
This tool generates SBOM data based on data from rpm and deb packages.
Output formats
==============
--format spdx
Generates SPDX 2.3 formatted data. This is the default.
--format cyclonedx
Generates CycloneDX 1.5 formatted data
--intoto
Can be used optional to wrap the generated data into in-toto.io
specified format.
Supported content
=================
--dir DIRECTORY
The RPM/Dpkg database of the system below DIRECTORY will be evaluated, also all
files will be referenced in the SBOM if RPM is used.
--product DIRECTORY
An installation medium. All .rpm files in any sub directory will be scanned.
--rpmmd DIRECTORY
A directory providing rpm-md meta data. A 'repodata/repomd.xml' file is expected.
--container-archive CONTAINER_ARCHIVE
An container providing a system