source: vbox/trunk/src/libs/openssl-3.0.2/crypto/objects/objxref.pl@ 94404

#! /usr/bin/env perl
# Copyright 1998-2021 The OpenSSL Project Authors. All Rights Reserved.
#
# Licensed under the Apache License 2.0 (the "License").  You may not use
# this file except in compliance with the License.  You can obtain a copy
# in the file LICENSE in the source distribution or at
# https://www.openssl.org/source/license.html

use strict;
use FindBin;
use lib "$FindBin::Bin/../../util/perl";
use OpenSSL::copyright;

my %xref_tbl;
my %oid_tbl;

my ($mac_file, $xref_file) = @ARGV;

# The year the output file is generated.
my $YEAR = OpenSSL::copyright::latest(($0, $mac_file, $xref_file));

open(IN, $mac_file) || die "Can't open $mac_file, $!\n";

# Read in OID nid values for a lookup table.

while (<IN>)
        {
        s|\R$||;                # Better chomp
        my ($name, $num) = /^(\S+)\s+(\S+)$/;
        $oid_tbl{$name} = $num;
        }
close IN;

open(IN, $xref_file) || die "Can't open $xref_file, $!\n";

my $ln = 1;

while (<IN>)
        {
        s|\R$||;                # Better chomp
        s/#.*$//;
        next if (/^\S*$/);
        my ($xr, $p1, $p2) = /^(\S+)\s+(\S+)\s+(\S+)/;
        check_oid($xr);
        check_oid($p1);
        check_oid($p2);
        $xref_tbl{$xr} = [$p1, $p2, $ln];
        }

my @xrkeys = keys %xref_tbl;

my @srt1 = sort { $oid_tbl{$a} <=> $oid_tbl{$b}} @xrkeys;

my $i;
for($i = 0; $i <= $#srt1; $i++)
        {
        $xref_tbl{$srt1[$i]}[2] = $i;
        }

my @srt2 = sort
        {
        my$ap1 = $oid_tbl{$xref_tbl{$a}[0]};
        my$bp1 = $oid_tbl{$xref_tbl{$b}[0]};
        return $ap1 - $bp1 if ($ap1 != $bp1);
        my$ap2 = $oid_tbl{$xref_tbl{$a}[1]};
        my$bp2 = $oid_tbl{$xref_tbl{$b}[1]};

        return $ap2 - $bp2;
        } @xrkeys;

my $pname = $0;
$pname =~ s|.*/||;

print <<EOF;
/*
 * WARNING: do not edit!
 * Generated by $pname
 *
 * Copyright 1998-$YEAR The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the Apache License 2.0 (the "License").  You may not use
 * this file except in compliance with the License.  You can obtain a copy
 * in the file LICENSE in the source distribution or at
 * https://www.openssl.org/source/license.html
 */


typedef struct {
    int sign_id;
    int hash_id;
    int pkey_id;
} nid_triple;

DEFINE_STACK_OF(nid_triple)

static const nid_triple sigoid_srt[] = {
EOF

foreach (@srt1)
        {
        my $xr = $_;
        my ($p1, $p2) = @{$xref_tbl{$_}};
        my $o1 = "    {NID_$xr, NID_$p1,";
        my $o2 = "NID_$p2},";
        if (length("$o1 $o2") < 78)
                {
                print "$o1 $o2\n";
                }
        else
                {
                print "$o1\n     $o2\n";
                }
        }

print "};";
print <<EOF;


static const nid_triple *const sigoid_srt_xref[] = {
EOF

foreach (@srt2)
        {
        my ($p1, $p2, $x) = @{$xref_tbl{$_}};
        # If digest or signature algorithm is "undef" then the algorithm
        # needs special handling and is excluded from the cross reference table.
        next if $p1 eq "undef" || $p2 eq "undef";
        print "    \&sigoid_srt\[$x\],\n";
        }

print "};\n";

sub check_oid
        {
        my ($chk) = @_;
        if (!exists $oid_tbl{$chk})
                {
                die "Can't find \"$chk\"\n";
                }
        }