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#! /usr/bin/env perl
# Copyright 1995-2019 The OpenSSL Project Authors. All Rights Reserved.
#
# Licensed under the OpenSSL license (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 integer;
use strict;
use warnings;
# Generate the DER encoding for the given OID.
sub der_it
{
# Prologue
my ($v) = @_;
my @a = split(/\s+/, $v);
my $ret = pack("C*", $a[0] * 40 + $a[1]);
shift @a;
shift @a;
# Loop over rest of bytes; or in 0x80 for multi-byte numbers.
my $t;
foreach (@a) {
my @r = ();
$t = 0;
while ($_ >= 128) {
my $x = $_ % 128;
$_ /= 128;
push(@r, ($t++ ? 0x80 : 0) | $x);
}
push(@r, ($t++ ? 0x80 : 0) | $_);
$ret .= pack("C*", reverse(@r));
}
return $ret;
}
# Output year depends on the year of the script and the input file.
my $YEAR = [localtime([stat($0)]->[9])]->[5] + 1900;
my $iYEAR = [localtime([stat($ARGV[0])]->[9])]->[5] + 1900;
$YEAR = $iYEAR if $iYEAR > $YEAR;
# Read input, parse all #define's into OID name and value.
# Populate %ln and %sn with long and short names (%dupln and %dupsn)
# are used to watch for duplicates. Also %nid and %obj get the
# NID and OBJ entries.
my %ln;
my %sn;
my %dupln;
my %dupsn;
my %nid;
my %obj;
my %objd;
open(IN, "$ARGV[0]") || die "Can't open input file $ARGV[0], $!";
while (<IN>) {
next unless /^\#define\s+(\S+)\s+(.*)$/;
my $v = $1;
my $d = $2;
$d =~ s/^\"//;
$d =~ s/\"$//;
if ($v =~ /^SN_(.*)$/) {
if (defined $dupsn{$d}) {
print "WARNING: Duplicate short name \"$d\"\n";
} else {
$dupsn{$d} = 1;
}
$sn{$1} = $d;
}
elsif ($v =~ /^LN_(.*)$/) {
if (defined $dupln{$d}) {
print "WARNING: Duplicate long name \"$d\"\n";
} else {
$dupln{$d} = 1;
}
$ln{$1} = $d;
}
elsif ($v =~ /^NID_(.*)$/) {
$nid{$d} = $1;
}
elsif ($v =~ /^OBJ_(.*)$/) {
$obj{$1} = $v;
$objd{$v} = $d;
}
}
close IN;
# For every value in %obj, recursively expand OBJ_xxx values. That is:
# #define OBJ_iso 1L
# #define OBJ_identified_organization OBJ_iso,3L
# Modify %objd values in-place. Create an %objn array that has
my $changed;
do {
$changed = 0;
foreach my $k (keys %objd) {
$changed = 1 if $objd{$k} =~ s/(OBJ_[^,]+),/$objd{$1},/;
}
} while ($changed);
my @a = sort { $a <=> $b } keys %nid;
my $n = $a[$#a] + 1;
my @lvalues = ();
my $lvalues = 0;
# Scan all defined objects, building up the @out array.
# %obj_der holds the DER encoding as an array of bytes, and %obj_len
# holds the length in bytes.
my @out;
my %obj_der;
my %obj_len;
for (my $i = 0; $i < $n; $i++) {
if (!defined $nid{$i}) {
push(@out, " { NULL, NULL, NID_undef },\n");
next;
}
my $sn = defined $sn{$nid{$i}} ? "$sn{$nid{$i}}" : "NULL";
my $ln = defined $ln{$nid{$i}} ? "$ln{$nid{$i}}" : "NULL";
if ($sn eq "NULL") {
$sn = $ln;
$sn{$nid{$i}} = $ln;
}
if ($ln eq "NULL") {
$ln = $sn;
$ln{$nid{$i}} = $sn;
}
my $out = " {\"$sn\", \"$ln\", NID_$nid{$i}";
if (defined $obj{$nid{$i}} && $objd{$obj{$nid{$i}}} =~ /,/) {
my $v = $objd{$obj{$nid{$i}}};
$v =~ s/L//g;
$v =~ s/,/ /g;
my $r = &der_it($v);
my $z = "";
my $length = 0;
# Format using fixed-with because we use strcmp later.
foreach (unpack("C*",$r)) {
$z .= sprintf("0x%02X,", $_);
$length++;
}
$obj_der{$obj{$nid{$i}}} = $z;
$obj_len{$obj{$nid{$i}}} = $length;
push(@lvalues,
sprintf(" %-45s /* [%5d] %s */\n",
$z, $lvalues, $obj{$nid{$i}}));
$out .= ", $length, &so[$lvalues]";
$lvalues += $length;
}
$out .= "},\n";
push(@out, $out);
}
# Finally ready to generate the output.
print <<"EOF";
/*
* WARNING: do not edit!
* Generated by crypto/objects/obj_dat.pl
*
* Copyright 1995-$YEAR The OpenSSL Project Authors. All Rights Reserved.
* Licensed under the OpenSSL license (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
*/
EOF
print "/* Serialized OID's */\n";
printf "static const unsigned char so[%d] = {\n", $lvalues + 1;
print @lvalues;
print "};\n\n";
printf "#define NUM_NID %d\n", $n;
printf "static const ASN1_OBJECT nid_objs[NUM_NID] = {\n";
print @out;
print "};\n\n";
{
no warnings "uninitialized";
@a = grep(defined $sn{$nid{$_}}, 0 .. $n);
}
printf "#define NUM_SN %d\n", $#a + 1;
printf "static const unsigned int sn_objs[NUM_SN] = {\n";
foreach (sort { $sn{$nid{$a}} cmp $sn{$nid{$b}} } @a) {
printf " %4d, /* \"$sn{$nid{$_}}\" */\n", $_;
}
print "};\n\n";
{
no warnings "uninitialized";
@a = grep(defined $ln{$nid{$_}}, 0 .. $n);
}
printf "#define NUM_LN %d\n", $#a + 1;
printf "static const unsigned int ln_objs[NUM_LN] = {\n";
foreach (sort { $ln{$nid{$a}} cmp $ln{$nid{$b}} } @a) {
printf " %4d, /* \"$ln{$nid{$_}}\" */\n", $_;
}
print "};\n\n";
{
no warnings "uninitialized";
@a = grep(defined $obj{$nid{$_}}, 0 .. $n);
}
printf "#define NUM_OBJ %d\n", $#a + 1;
printf "static const unsigned int obj_objs[NUM_OBJ] = {\n";
# Compare DER; prefer shorter; if some length, use the "smaller" encoding.
sub obj_cmp
{
no warnings "uninitialized";
my $A = $obj_len{$obj{$nid{$a}}};
my $B = $obj_len{$obj{$nid{$b}}};
my $r = $A - $B;
return $r if $r != 0;
$A = $obj_der{$obj{$nid{$a}}};
$B = $obj_der{$obj{$nid{$b}}};
return $A cmp $B;
}
foreach (sort obj_cmp @a) {
my $m = $obj{$nid{$_}};
my $v = $objd{$m};
$v =~ s/L//g;
$v =~ s/,/ /g;
printf " %4d, /* %-32s %s */\n", $_, $m, $v;
}
print "};\n";
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