#!/usr/local/bin/perl -w
#
# generate a .def file
#
# It does this by parsing the header files and looking for the
# prototyped functions: it then prunes the output.
#
# Intermediary files are created, call libeay.num and ssleay.num,...
# Previously, they had the following format:
#
# routine-name nnnn
#
# But that isn't enough for a number of reasons, the first on being that
# this format is (needlessly) very Win32-centric, and even then...
# One of the biggest problems is that there's no information about what
# routines should actually be used, which varies with what crypto algorithms
# are disabled. Also, some operating systems (for example VMS with VAX C)
# need to keep track of the global variables as well as the functions.
#
# So, a remake of this script is done so as to include information on the
# kind of symbol it is (function or variable) and what algorithms they're
# part of. This will allow easy translating to .def files or the corresponding
# file in other operating systems (a .opt file for VMS, possibly with a .mar
# file).
#
# The format now becomes:
#
# routine-name nnnn info
#
# and the "info" part is actually a colon-separated string of fields with
# the following meaning:
#
# existence:platform:kind:algorithms
#
# - "existence" can be "EXIST" or "NOEXIST" depending on if the symbol is
# found somewhere in the source,
# - "platforms" is empty if it exists on all platforms, otherwise it contains
# comma-separated list of the platform, just as they are if the symbol exists
# for those platforms, or prepended with a "!" if not. This helps resolve
# symbol name replacements for platforms where the names are too long for the
# compiler or linker, or if the systems is case insensitive and there is a
# clash. This script assumes those redefinitions are place in the file
# crypto/symhacks.h.
# The semantics for the platforms list is a bit complicated. The rule of
# thumb is that the list is exclusive, but it seems to mean different things.
# So, if the list is all negatives (like "!VMS,!WIN16"), the symbol exists
# on all platforms except those listed. If the list is all positives (like
# "VMS,WIN16"), the symbol exists only on those platforms and nowhere else.
# The combination of positives and negatives will act as if the positives
# weren't there.
# - "kind" is "FUNCTION" or "VARIABLE". The meaning of that is obvious.
# - "algorithms" is a comma-separated list of algorithm names. This helps
# exclude symbols that are part of an algorithm that some user wants to
# exclude.
#
my $debug=0;
my $crypto_num= "util/libeay.num";
my $ssl_num= "util/ssleay.num";
my $do_update = 0;
my $do_rewrite = 0;
my $do_crypto = 0;
my $do_ssl = 0;
my $do_ctest = 0;
my $do_ctestall = 0;
my $do_checkexist = 0;
my $VMS=0;
my $W32=0;
my $W16=0;
my $NT=0;
# Set this to make typesafe STACK definitions appear in DEF
my $safe_stack_def = 0;
my @known_platforms = ( "__FreeBSD__", "PERL5", "NeXT" );
my @known_ossl_platforms = ( "VMS", "WIN16", "WIN32", "WINNT" );
my @known_algorithms = ( "RC2", "RC4", "RC5", "IDEA", "DES", "BF",
"CAST", "MD2", "MD4", "MD5", "SHA", "SHA0", "SHA1",
"RIPEMD",
"MDC2", "RSA", "DSA", "DH", "HMAC", "AES",
# Envelope "algorithms"
"EVP", "X509", "ASN1_TYPEDEFS",
# Helper "algorithms"
"BIO", "COMP", "BUFFER", "LHASH", "STACK", "ERR",
"LOCKING",
# External "algorithms"
"FP_API", "STDIO", "SOCK", "KRB5" );
my $options="";
open(IN,"<Makefile.ssl") || die "unable to open Makefile.ssl!\n";
while(<IN>) {
$options=$1 if (/^OPTIONS=(.*)$/);
}
close(IN);
# The following ciphers may be excluded (by Configure). This means functions
# defined with ifndef(NO_XXX) are not included in the .def file, and everything
# in directory xxx is ignored.
my $no_rc2; my $no_rc4; my $no_rc5; my $no_idea; my $no_des; my $no_bf;
my $no_cast;
my $no_md2; my $no_md4; my $no_md5; my $no_sha; my $no_ripemd; my $no_mdc2;
my $no_rsa; my $no_dsa; my $no_dh; my $no_hmac=0; my $no_aes; my $no_krb5;
my $no_fp_api;
foreach (@ARGV, split(/ /, $options))
{
$W32=1 if $_ eq "32";
$W16=1 if $_ eq "16";
if($_ eq "NT") {
$W32 = 1;
$NT = 1;
}
$VMS=1 if $_ eq "VMS";
$do_ssl=1 if $_ eq "ssleay";
$do_ssl=1 if $_ eq "ssl";
$do_crypto=1 if $_ eq "libeay";
$do_crypto=1 if $_ eq "crypto";