#!/usr/local/bin/perl
#
# see PROBLEMS for instructions on what sort of things to do when 
# tracking a bug --tjh
#
# extra options
# -DRSAref	build to use RSAref
# -DNOIDEA	build with no IDEA algorithm
# -DNORC4	build with no RC4 algorithm
# -DNORC2     build with no RC2 algorithm
#
# DES_PTR	use pointer lookup vs arrays in the DES in crypto/des/des_locl.h
# DES_INT	use 'int' instead of 'long' for DES_LONG in crypto/des/des.h
#		This is used on the DEC Alpha where long is 8 bytes
#		and int is 4
# BN_LLONG	use the type 'long long' in crypto/bn/bn.h
# MD2_CHAR	use 'char' instead of 'int' for MD2_INT in crypto/md/md2.h
# MD2_LONG	use 'long' instead of 'int' for MD2_INT in crypto/md/md2.h
# IDEA_SHORT	use 'short' instead of 'int' for IDEA_INT in crypto/idea/idea.h
# IDEA_LONG	use 'long' instead of 'int' for IDEA_INT in crypto/idea/idea.h
# RC4_CHAR	use 'char' instead of 'int' for RC4_INT in crypto/rc4/rc4.h
# RC4_LONG	use 'long' instead of 'int' for RC4_INT in crypto/rc4/rc4.h
# RC4_INDEX	define RC4_INDEX in crypto/rc4/rc4_enc.c.  This turns on
#		array lookups instead of pointer use.

# MODIFY THESE PARAMETERS IF YOU ARE GOING TO USE THE 'util/speed.sh SCRIPT
# Don't worry about these normally

$tcc="cc";
$tflags="-fast -Xa";
$tbn_mul="";
$tlib="-lnsl -lsocket";
#$bits1="SIXTEEN_BITS ";
#$bits2="THIRTY_TWO_BITS ";
$bits1="THIRTY_TWO_BITS ";
$bits2="SIXTY_FOUR_BITS ";

# -DB_ENDIAN slows things down on a sparc

#config-string	CC : CFLAGS : LDFLAGS : special header file mods:asm
%table=(
"b",		"$tcc:$tflags:$tlib:$bits1:$tbn_mul",
"bl-4c-2c",	"$tcc:$tflags:$tlib:${bits1}BN_LLONG RC4_CHAR MD2_CHAR:$tbn_mul",
"bl-4c-ri",	"$tcc:$tflags:$tlib:${bits1}BN_LLONG RC4_CHAR RC4_INDEX:$tbn_mul",
"b2-is-ri-dp",	"$tcc:$tflags:$tlib:${bits2}IDEA_SHORT RC4_INDEX DES_PTR:$tbn_mul",

# A few of my development configs
"purify",	"purify gcc:-g -DPURIFY -Wall:-lsocket -lnsl::",
"debug",	"cc:-g -Xa:-lefence -lsocket -lnsl::",
"dist",		"cc:-O -DNOPROTO:::",

# Basic configs that should work on any box
"gcc",		"gcc:-O3::BN_LLONG:",
"cc",		"cc:-O -DNOPROTO -DNOCONST:::",

# My solaris setups
#"solaris-x86-gcc","gcc:-O3 -fomit-frame-pointer -m486 -Wall:\
#	-lsocket -lnsl:BN_LLONG MD2_CHAR RC4_INDEX:asm/x86-sol.o",
"solaris-x86-gcc","gcc:-O3 -fomit-frame-pointer -m486 -Wall -DL_ENDIAN:\
	-lsocket -lnsl:BN_LLONG MD2_CHAR RC4_INDEX:",
"solaris-sparc-gcc","gcc:-O3 -fomit-frame-pointer -mv8 -Wall:\
	-lsocket -lnsl:BN_LLONG RC4_CHAR:",
# DO NOT use /xO[34] on sparc, SC3.0 is broken, and will not pass the tests
"solaris-sparc-cc","cc:-fast -Xa -DB_ENDIAN:\
	-lsocket -lnsl:BN_LLONG RC4_CHAR DES_PTR:asm/sparc.o",
# SC4.0 is ok, better than gcc, except for the bignum stuff.
"solaris-sparc-sc4","cc:-fast -xO5 -Xa -DB_ENDIAN:\
	-lsocket -lnsl:BN_LLONG RC4_CHAR DES_PTR:asm/sparc.o",

# Sunos configs, assuming sparc for the gcc one.
"sunos-cc", "cc:-O4 -DNOPROTO -DNOCONST:::",
"sunos-gcc","gcc:-O3 -mv8::BN_LLONG RC4_CHAR:",

# SGI configurations.  If the box is rather old (r3000 cpu), you will
# probably have to remove the '-mips2' flag.  I've only been using
# IRIX 5.[23].
#"irix-gcc","gcc:-O2 -mips2::BN_LLONG RC4_INDEX RC4_CHAR:",
"irix-gcc","gcc:-O2 -DTERMIOS -DB_ENDIAN::BN_LLONG MD2_CHAR RC4_INDEX RC4_CHAR:",
"irix-cc", "cc:-O2 -DTERMIOS -DB_ENDIAN:::asm/r3000.o",

# HPUX config.  I've been building on HPUX 9, so the options may be
# different on version 10.
"hpux-cc",	"cc:-DB_ENDIAN -D_HPUX_SOURCE -Aa +ESlit +Oall +O4 -Wl,-a,archive:::asm/pa-risc.s",
"hpux-kr-cc",	"cc:-DB_ENDIAN -DNOCONST -DNOPROTO -D_HPUX_SOURCE:::asm/pa-risc.s",
"hpux-gcc",	"gcc:-DB_ENDIAN -O3::BN_LLONG:",

# Dec Alpha, OSF/1
"alpha-gcc","gcc:-O3::SIXTY_FOUR_BITS DES_INT:asm/alpha.s",
"alpha-cc", "cc:-O2::SIXTY_FOUR_BITS DES_INT:asm/alpha.s",

# The intel boxes :-), It would be worth seeing of bsdi-gcc can use the
# x86-lnx.o file file since it is hand tweaked assembler.
"linux-elf",	"gcc:-DL_ENDIAN -DTERMIO -O3 -fomit-frame-pointer -m486 -Wall::BN_LLONG MD2_CHAR RC4_INDEX:asm/x86-lnx.o",
"debug-linux-elf","gcc:-DL_ENDIAN -DTERMIO -g -O -m486 -Wall -Wuninitialized:-lefence:BN_LLONG MD2_CHAR RC4_INDEX:asm/x86-lnx.o",
"linux-aout",	"gcc:-DL_ENDIAN -DTERMIO -O3 -fomit-frame-pointer -m486 -Wall::BN_LLONG MD2_CHAR RC4_INDEX:asm/x86-lnxa.o",
"NetBSD-sparc",	"gcc:-DTERMIOS -O3 -fomit-frame-pointer -mv8 -Wall::BN_LLONG MD2_CHAR RC4_INDEX:",
"NetBSD-x86",	"gcc:-DTERMIOS -D_ANSI_SOURCE -O3 -fomit-frame-pointer -m486 -Wall::BN_LLONG MD2_CHAR RC4_INDEX:x86-lnx.o",
"FreeBSD",   "gcc:-DTERMIO -D_ANSI_SOURCE -DHAVE_MD -O2 -m486 -Wall:-ldes -lmd:BN_LLONG RC4_INDEX:",
#"bsdi-gcc",	"shlicc2:-O3 -ffast-math-m486::RSA_LLONG MD2_CHAR RC4_INDEX:",
"bsdi-gcc",     "gcc2:-O3 -ffast-math -m486::RSA_LLONG MD2_CHAR RC4_INDEX:",
"nextstep",	"cc:-O3 -Wall::BN_LLONG MD2_CHAR RC4_INDEX:",

# UnixWare 2.0
"unixware-2.0","cc:-O:-lsocket -lnsl:MD2_CHAR RC4_INDEX:",
"unixware-2.0-pentium","cc:-O -Kpentium -Kthread:-lsocket -lnsl:MD2_CHAR RC4_INDEX:",

# IBM's AIX.
"aix-cc",   "cc:-O -DAIX -DB_ENDIAN::RC4_CHAR:",

# DGUX, 88100.
"dgux-R3-gcc",	"gcc:-O3 -fomit-fram-pointer::RC4_INDEX:",
"dgux-R4-gcc",	"gcc:-O3 -fomit-fram-pointer::RC4_INDEX:-lnsl -lsocket",
"dgux-R4-x86-gcc",	"gcc:-O3 -fomit-frame-pointer -DL_ENDIAN:-lnsl -lsocket:BN_LLONG MD2_CHAR RC4_INDEX:asm/x86-lnx.o",

# SCO 5
"sco5-cc",  "cc:-O:-lsocket:MD2_CHAR RC4_INDEX:",

# Windows NT, Microsoft Visual C++ 4.0
"VC-NT","cl:::BN_LLONG RC4_INDEX:",
"VC-W31-16","cl:::BN_LLONG MD2_CHAR DES_PTR RC4_INDEX SIXTEEN_BITS:",
"VC-W31-32","cl:::MD2_CHAR DES_PTR RC4_INDEX THIRTY_TWO_BITS:",
"VC-MSDOS","cl:::BN_LLONG MD2_CHAR DES_PTR RC4_INDEX SIXTEEN_BITS:",

# Borland C++ 4.5
"BC-32","bcc32:::DES_PTR RC4_INDEX:",
"BC-16","bcc:::BN_LLONG DES_PTR RC4_INDEX SIXTEEN_BITS:",
);

$postfix="org";
$Makefile="Makefile.ssl";
$des_locl="crypto/des/des_locl.h";
$des	="crypto/des/des.h";
$bn	="crypto/bn/bn.h";
$md2	="crypto/md/md2.h";
$rc4	="crypto/rc4/rc4.h";
$rc4_enc="crypto/rc4/rc4_enc.c";
$idea	="crypto/idea/idea.h";
$bn_mulw="bn_mulw.o";

if ($#ARGV < 0)
	{
	&bad_target;
	exit(1);
	}

$flags="";
foreach (@ARGV)
	{
	if ($_ =~ /^-/)
		{
		if ($_ =~ /^-[lL](.*)$/)
			{
			$libs.=$_." ";
			}
		elsif ($_ =~ /^-D(.*)$/)
			{
			$flags.=$_." ";
			}
		else
			{
			die "unknown options, only -Dxxx, -Lxxx -lxxx supported\n";
			}
		}
	else
		{
		die "target already defined - $target\n" if ($target ne "");
		$target=$_;
		if (!defined($table{$target}))
			{
			&bad_target;
			exit(1);
			}
		}
	}

if (!defined($table{$target}))
	{
	&bad_target;
	exit(1);
	}

($cc,$cflags,$lflags,$bn_ops,$bn_obj)=split(/\s*:\s*/,$table{$target});
$cflags="$flags$cflags" if ($flags ne "");
$lflags="$libs$lflags"if ($libs ne "");

$bn_obj=$bn_mulw unless ($bn_obj =~ /\.o$/);

open(IN,"<".$Makefile) || die "unable to read $Makefile:$!\n";
open(OUT,">".$Makefile.".new") || die "unable to read $Makefile.new:$!\n";
while (<IN>)
	{
	chop;
	s/^CC=.*$/CC= $cc/;
	s/^CFLAG=.*$/CFLAG= $cflags/;
	s/^EX_LIBS=.*$/EX_LIBS= $lflags/;
	s/^BN_MULW=.*$/BN_MULW= $bn_obj/;
	print OUT $_."\n";
	}
close(IN);
close(OUT);
&Rename($Makefile,$Makefile.".old");
&Rename($Makefile.".new",$Makefile);
print "CC=$cc\n";
print "CFLAG=$cflags\n";
print "EX_LIBS=$lflags\n";
print "BN_MULW=$bn_obj\n";

$des_ptr=0;
$bn_ll=0;
$def_int=2;
$rc4_int=$def_int;
$md2_int=$def_int;
$idea_int=$def_int;
$rc4_idx=0;
@type=("char","short","int","long");
($b64,$b32,$b16,$b8)=(0,1,0,0);

foreach (sort split(/\s+/,$bn_ops))
	{
	$des_ptr=1 if /DES_PTR/;
	$des_int=1 if /DES_INT/;
	$bn_ll=1 if /BN_LLONG/;
	$rc4_int=0 if /RC4_CHAR/;
	$rc4_int=3 if /RC4_LONG/;
	$rc4_idx=1 if /RC4_INDEX/;
	$md2_int=0 if /MD2_CHAR/;
	$md2_int=3 if /MD2_LONG/;
	$idea_int=1 if /IDEA_SHORT/;
	$idea_int=3 if /IDEA_LONG/;

	($b64,$b32,$b16,$b8)=(1,0,0,0) if /SIXTY_FOUR_BITS/;
	($b64,$b32,$b16,$b8)=(0,1,0,0) if /THIRTY_TWO_BITS/;
	($b64,$b32,$b16,$b8)=(0,0,1,0) if /SIXTEEN_BITS/;
	($b64,$b32,$b16,$b8)=(0,0,0,1) if /EIGHT_BITS/;
	}

(($in=$bn) =~ s/\.([^.]+)/.$postfix/);
open(IN,"<".$in) || die "unable to read $bn:$!\n";
open(OUT,">".$bn.".new") || die "unable to read $bn.new:$!\n";
while (<IN>)
	{
	if	(/^#((define)|(undef))\s+SIXTY_FOUR_BIT/)
		{ printf OUT "#%s SIXTY_FOUR_BIT\n",($b64)?"define":"undef"; }
	elsif	(/^#((define)|(undef))\s+THIRTY_TWO_BIT/)
		{ printf OUT "#%s THIRTY_TWO_BIT\n",($b32)?"define":"undef"; }
	elsif	(/^#((define)|(undef))\s+SIXTEEN_BIT/)
		{ printf OUT "#%s SIXTEEN_BIT\n",($b16)?"define":"undef"; }
	elsif	(/^#((define)|(undef))\s+EIGHT_BIT/)
		{ printf OUT "#%s EIGHT_BIT\n",($b8)?"define":"undef"; }
	elsif	(/^#((define)|(undef))\s+BN_LLONG/)
		{ printf OUT "#%s BN_LLONG\n",($bn_ll)?"define":"undef"; }
	else
		{ print OUT $_; }
	}
close(IN);
close(OUT);
&Rename($bn,$bn.".old");
&Rename($bn.".new",$bn);

(($in=$des) =~ s/\.([^.]+)/.$postfix/);
open(IN,"<".$in) || die "unable to read $des:$!\n";
open(OUT,">".$des.".new") || die "unable to read $des.new:$!\n";
while (<IN>)
	{
	if	(/^\#define\s+DES_LONG\s+.*/)
		{ printf OUT "#define DES_LONG unsigned %s\n",
			($des_int)?'int':'long'; }
	else
		{ print OUT $_; }
	}
close(IN);
close(OUT);
&Rename($des,$des.".old");
&Rename($des.".new",$des);

(($in=$des_locl) =~ s/\.([^.]+)/.$postfix/);
open(IN,"<".$in) || die "unable to read $des_locl:$!\n";
open(OUT,">".$des_locl.".new") || die "unable to read $des_locl.new:$!\n";
while (<IN>)
	{
	if	(/^\#(define|undef)\s+DES_PTR/)
		{ printf OUT "#%s DES_PTR\n",($des_ptr)?'define':'undef'; }
	else
		{ print OUT $_; }
	}
close(IN);
close(OUT);
&Rename($des_locl,$des_locl.".old");
&Rename($des_locl.".new",$des_locl);

(($in=$rc4) =~ s/\.([^.]+)/.$postfix/);
open(IN,"<".$in) || die "unable to read $rc4:$!\n";
open(OUT,">".$rc4.".new") || die "unable to read $rc4.new:$!\n";
while (<IN>)
	{
	if	(/^#define\s+RC4_INT\s/)
		{ printf OUT "#define RC4_INT unsigned %s\n",$type[$rc4_int]; }
	else
		{ print OUT $_; }
	}
close(IN);
close(OUT);
&Rename($rc4,$rc4.".old");
&Rename($rc4.".new",$rc4);

(($in=$rc4_enc) =~ s/\.([^.]+)/.$postfix/);
open(IN,"<".$in) || die "unable to read $rc4_enc:$!\n";
open(OUT,">".$rc4_enc.".new") || die "unable to read $rc4_enc.new:$!\n";
while (<IN>)
	{
	if	(/^#((define)|(undef))\s+RC4_INDEX/)
		{ printf OUT "#%s RC4_INDEX\n",($rc4_idx)?"define":"undef"; }
	else
		{ print OUT $_; }
	}
close(IN);
close(OUT);
&Rename($rc4_enc,$rc4_enc.".old");
&Rename($rc4_enc.".new",$rc4_enc);

(($in=$md2) =~ s/\.([^.]+)/.$postfix/);
open(IN,"<".$in) || die "unable to read $bn:$!\n";
open(OUT,">".$md2.".new") || die "unable to read $bn.new:$!\n";
while (<IN>)
	{
	if	(/^#define\s+MD2_INT\s/)
		{ printf OUT "#define MD2_INT unsigned %s\n",$type[$md2_int]; }
	else
		{ print OUT $_; }
	}
close(IN);
close(OUT);
&Rename($md2,$md2.".old");
&Rename($md2.".new",$md2);

(($in=$idea) =~ s/\.([^.]+)/.$postfix/);
open(IN,"<".$in) || die "unable to read $idea:$!\n";
open(OUT,">".$idea.".new") || die "unable to read $idea.new:$!\n";
while (<IN>)
	{
	if	(/^#define\s+IDEA_INT\s/)
		{printf OUT "#define IDEA_INT unsigned %s\n",$type[$idea_int];}
	else
		{ print OUT $_; }
	}
close(IN);
close(OUT);
&Rename($idea,$idea.".old");
&Rename($idea.".new",$idea);

print "SIXTY_FOUR_BIT mode\n" if $b64;
print "THIRTY_TWO_BIT mode\n" if $b32;
print "SIXTEEN_BIT mode\n" if $b16;
print "EIGHT_BIT mode\n" if $b8;
print "DES_PTR used\n" if $des_ptr;
print "DES_INT used\n" if $des_int;
print "BN_LLONG mode\n" if $bn_ll;
print "RC4 uses u$type[$rc4_int]\n" if $rc4_int != $def_int;
print "RC4_INDEX mode\n" if $rc4_idx;
print "MD2 uses u$type[$md2_int]\n" if $md2_int != $def_int;
print "IDEA uses u$type[$idea_int]\n" if $idea_int != $def_int;
exit(0);

sub bad_target
	{
	print STDERR "Usage: Configure [-Dxxx] [-Lxxx] [-lxxx] os/compiler\n";
	print STDERR "pick os/compiler from:";
	$j=0;
	foreach $i (sort keys %table)
		{
		next if /^b-/;
		print STDERR "\n" if ($j++ % 4) == 0;
		printf(STDERR "%-18s ",$i);
		}
	print STDERR "\n";
	}

sub Rename
	{
	local($from,$to)=@_;

	unlink($to);
	rename($from,$to) || die "unable to rename $from to $to:$!\n";
	}

.