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openssl/crypto/objects/objects.pl
Richard Levitte 9ba96fbb25 Perl's chop / chomp considered bad, use a regexp instead 
Once upon a time, there was chop, which somply chopped off the last
character of $_ or a given variable, and it was used to take off the
EOL character (\n) of strings.

... but then, you had to check for the presence of such character.

So came chomp, the better chop which checks for \n before chopping it
off.  And this worked well, as long as Perl made internally sure that
all EOLs were converted to \n.

These days, though, there seems to be a mixture of perls, so lines
from files in the "wrong" environment might have \r\n as EOL, or just
\r (Mac OS, unless I'm misinformed).

So it's time we went for the more generic variant and use s|\R$||, the
better chomp which recognises all kinds of known EOLs and chops them
off.

A few chops were left alone, as they are use as surgical tools to
remove one last slash or one last comma.

NOTE: \R came with perl 5.10.0.  It means that from now on, our
scripts will fail with any older version.

Reviewed-by: Rich Salz <rsalz@openssl.org>
2016-02-11 22:11:48 +01:00

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#!/usr/local/bin/perl
open (NUMIN,"$ARGV[1]") || die "Can't open number file $ARGV[1]";
$max_nid=0;
$o=0;
while(<NUMIN>)
{
s|\R$||;
$o++;
s/#.*$//;
next if /^\s*$/;
$_ = 'X'.$_;
($Cname,$mynum) = split;
$Cname =~ s/^X//;
if (defined($nidn{$mynum}))
{ die "$ARGV[1]:$o:There's already an object with NID ",$mynum," on line ",$order{$mynum},"\n"; }
if (defined($nid{$Cname}))
{ die "$ARGV[1]:$o:There's already an object with name ",$Cname," on line ",$order{$nid{$Cname}},"\n"; }
$nid{$Cname} = $mynum;
$nidn{$mynum} = $Cname;
$order{$mynum} = $o;
$max_nid = $mynum if $mynum > $max_nid;
}
close NUMIN;
open (IN,"$ARGV[0]") || die "Can't open input file $ARGV[0]";
$Cname="";
$o=0;
while (<IN>)
{
s|\R$||;
$o++;
if (/^!module\s+(.*)$/)
{
$module = $1."-";
$module =~ s/\./_/g;
$module =~ s/-/_/g;
}
if (/^!global$/)
{ $module = ""; }
if (/^!Cname\s+(.*)$/)
{ $Cname = $1; }
if (/^!Alias\s+(.+?)\s+(.*)$/)
{
$Cname = $module.$1;
$myoid = $2;
$myoid = &process_oid($myoid);
$Cname =~ s/-/_/g;
$ordern{$o} = $Cname;
$order{$Cname} = $o;
$obj{$Cname} = $myoid;
$_ = "";
$Cname = "";
}
s/!.*$//;
s/#.*$//;
next if /^\s*$/;
($myoid,$mysn,$myln) = split ':';
$mysn =~ s/^\s*//;
$mysn =~ s/\s*$//;
$myln =~ s/^\s*//;
$myln =~ s/\s*$//;
$myoid =~ s/^\s*//;
$myoid =~ s/\s*$//;
if ($myoid ne "")
{
$myoid = &process_oid($myoid);
}
if ($Cname eq "" && ($myln =~ /^[_A-Za-z][\w.-]*$/ ))
{
$Cname = $myln;
$Cname =~ s/\./_/g;
$Cname =~ s/-/_/g;
if ($Cname ne "" && defined($ln{$module.$Cname}))
{ die "objects.txt:$o:There's already an object with long name ",$ln{$module.$Cname}," on line ",$order{$module.$Cname},"\n"; }
}
if ($Cname eq "")
{
$Cname = $mysn;
$Cname =~ s/-/_/g;
if ($Cname ne "" && defined($sn{$module.$Cname}))
{ die "objects.txt:$o:There's already an object with short name ",$sn{$module.$Cname}," on line ",$order{$module.$Cname},"\n"; }
}
if ($Cname eq "")
{
$Cname = $myln;
$Cname =~ s/-/_/g;
$Cname =~ s/\./_/g;
$Cname =~ s/ /_/g;
if ($Cname ne "" && defined($ln{$module.$Cname}))
{ die "objects.txt:$o:There's already an object with long name ",$ln{$module.$Cname}," on line ",$order{$module.$Cname},"\n"; }
}
$Cname =~ s/\./_/g;
$Cname =~ s/-/_/g;
$Cname = $module.$Cname;
$ordern{$o} = $Cname;
$order{$Cname} = $o;
$sn{$Cname} = $mysn;
$ln{$Cname} = $myln;
$obj{$Cname} = $myoid;
if (!defined($nid{$Cname}))
{
$max_nid++;
$nid{$Cname} = $max_nid;
$nidn{$max_nid} = $Cname;
print STDERR "Added OID $Cname\n";
}
$Cname="";
}
close IN;
open (NUMOUT,">$ARGV[1]") || die "Can't open output file $ARGV[1]";
foreach (sort { $a <=> $b } keys %nidn)
{
print NUMOUT $nidn{$_},"\t\t",$_,"\n";
}
close NUMOUT;
open (OUT,">$ARGV[2]") || die "Can't open output file $ARGV[2]";
print OUT <<'EOF';
/*
* THIS FILE IS GENERATED FROM objects.txt by objects.pl via the following
* command: perl objects.pl objects.txt obj_mac.num obj_mac.h
*/
/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
* This package is an SSL implementation written
* by Eric Young (eay@cryptsoft.com).
* The implementation was written so as to conform with Netscapes SSL.
*
* This library is free for commercial and non-commercial use as long as
* the following conditions are aheared to. The following conditions
* apply to all code found in this distribution, be it the RC4, RSA,
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
* included with this distribution is covered by the same copyright terms
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
*
* Copyright remains Eric Young's, and as such any Copyright notices in
* the code are not to be removed.
* If this package is used in a product, Eric Young should be given attribution
* as the author of the parts of the library used.
* This can be in the form of a textual message at program startup or
* in documentation (online or textual) provided with the package.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* "This product includes cryptographic software written by
* Eric Young (eay@cryptsoft.com)"
* The word 'cryptographic' can be left out if the rouines from the library
* being used are not cryptographic related :-).
* 4. If you include any Windows specific code (or a derivative thereof) from
* the apps directory (application code) you must include an acknowledgement:
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
*
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* The licence and distribution terms for any publically available version or
* derivative of this code cannot be changed. i.e. this code cannot simply be
* copied and put under another distribution licence
* [including the GNU Public Licence.]
*/
#define SN_undef "UNDEF"
#define LN_undef "undefined"
#define NID_undef 0
#define OBJ_undef 0L
EOF
sub expand
{
my $string = shift;
1 while $string =~ s/\t+/' ' x (length($&) * 8 - length($`) % 8)/e;
return $string;
}
foreach (sort { $a <=> $b } keys %ordern)
{
$Cname=$ordern{$_};
print OUT "\n";
print OUT expand("#define SN_$Cname\t\t\"$sn{$Cname}\"\n") if $sn{$Cname} ne "";
print OUT expand("#define LN_$Cname\t\t\"$ln{$Cname}\"\n") if $ln{$Cname} ne "";
print OUT expand("#define NID_$Cname\t\t$nid{$Cname}\n") if $nid{$Cname} ne "";
print OUT expand("#define OBJ_$Cname\t\t$obj{$Cname}\n") if $obj{$Cname} ne "";
}
close OUT;
sub process_oid
{
local($oid)=@_;
local(@a,$oid_pref);
@a = split(/\s+/,$myoid);
$pref_oid = "";
$pref_sep = "";
if (!($a[0] =~ /^[0-9]+$/))
{
$a[0] =~ s/-/_/g;
if (!defined($obj{$a[0]}))
{ die "$ARGV[0]:$o:Undefined identifier ",$a[0],"\n"; }
$pref_oid = "OBJ_" . $a[0];
$pref_sep = ",";
shift @a;
}
$oids = join('L,',@a) . "L";
if ($oids ne "L")
{
$oids = $pref_oid . $pref_sep . $oids;
}
else
{
$oids = $pref_oid;
}
return($oids);
}
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