M2_SETI/A1/TP/axtls-code/bindings/generate_SWIG_interface.pl

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2022-11-28 11:40:47 +01:00
#!/usr/bin/perl
#
# Copyright (c) 2007, Cameron Rich
#
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
# * 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.
# * Neither the name of the axTLS project nor the names of its
# contributors may be used to endorse or promote products derived
# from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "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 COPYRIGHT OWNER 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.
#
#===============================================================
# Transforms function signature into SWIG format
sub transformSignature
{
foreach $item (@_)
{
$line =~ s/STDCALL //g;
$line =~ s/EXP_FUNC/extern/g;
# make API Java more 'byte' friendly
$line =~ s/uint32_t/int/g;
$line =~ s/const uint8_t \* /const unsigned char \* /g;
$line =~ s/\(void\)/()/g;
if ($ARGV[0] eq "-java")
{
$line =~ s/.*ssl_read.*//g;
$line =~ s/const uint8_t \*(\w+)/const signed char $1\[\]/g;
$line =~ s/uint8_t/signed char/g;
}
elsif ($ARGV[0] eq "-perl")
{
$line =~ s/const uint8_t \*(\w+)/const unsigned char $1\[\]/g;
$line =~ s/uint8_t/unsigned char/g;
}
else # lua
{
$line =~ s/const uint8_t \*session_id/const unsigned char session_id\[\]/g;
$line =~ s/const uint8_t \*\w+/unsigned char *INPUT/g;
$line =~ s/uint8_t/unsigned char/g;
}
}
return $line;
}
# Parse input file
sub parseFile
{
foreach $line (@_)
{
next if $line =~ /ssl_x509_create/; # ignore for now
# test for a #define
if (!$skip && $line =~ m/^#define/)
{
$splitDefine = 1 if $line =~ m/\\$/;
print DATA_OUT $line;
# check line is not split
next if $splitDefine == 1;
}
# pick up second line of #define statement
if ($splitDefine)
{
print DATA_OUT $line;
# check line is not split
$splitDefine = ($line =~ m/\\$/);
next;
}
# test for function declaration
if (!$skip && $line =~ /EXP_FUNC/ && $line !~/\/\*/)
{
$line = transformSignature($line);
$splitFunctionDeclaration = $line !~ /;/;
print DATA_OUT $line;
next;
}
if ($splitFunctionDeclaration)
{
$line = transformSignature($line);
$splitFunctionDeclaration = $line !~ /;/;
print DATA_OUT $line;
next;
}
}
}
#===============================================================
# Determine which module to build from cammand-line options
use strict;
use Getopt::Std;
my $module;
my $interfaceFile;
my $data_file;
my $skip;
my $splitLine;
my @raw_data;
if (not defined $ARGV[0])
{
goto ouch;
}
if ($ARGV[0] eq "-java")
{
print "Generating Java interface file\n";
$module = "axtlsj";
$interfaceFile = "java/axTLSj.i";
}
elsif ($ARGV[0] eq "-perl")
{
print "Generating Perl interface file\n";
$module = "axtlsp";
$interfaceFile = "perl/axTLSp.i";
}
elsif ($ARGV[0] eq "-lua")
{
print "Generating lua interface file\n";
$module = "axtlsl";
$interfaceFile = "lua/axTLSl.i";
}
else
{
ouch:
die "Usage: $0 [-java | -perl | -lua]\n";
}
# Input file required to generate SWIG interface file.
$data_file = "../ssl/ssl.h";
# Open input files
open(DATA_IN, $data_file) || die("Could not open file ($data_file)!");
@raw_data = <DATA_IN>;
# Open output file
open(DATA_OUT, ">$interfaceFile") || die("Cannot Open File");
#
# I wish I could say it was easy to generate the Perl/Java/Lua bindings,
# but each had their own set of challenges... :-(.
#
print DATA_OUT << "END";
%module $module\n
/* include our own header */
%inline %{
#include "ssl.h"
%}
%include "typemaps.i"
/* Some SWIG magic to make the API a bit more Java friendly */
#ifdef SWIGJAVA
%apply long { SSL * };
%apply long { SSL_CTX * };
%apply long { SSLObjLoader * };
/* allow "unsigned char []" to become "byte[]" */
%include "arrays_java.i"
/* convert these pointers to use long */
%apply signed char[] {unsigned char *};
%apply signed char[] {signed char *};
/* allow ssl_get_session_id() to return "byte[]" */
%typemap(out) unsigned char * ssl_get_session_id \"if (result) jresult = SWIG_JavaArrayOutSchar(jenv, result, ssl_get_session_id_size((SSL const *)arg1));\"
/* allow ssl_client_new() to have a null session_id input */
%typemap(in) const signed char session_id[] (jbyte *jarr) {
if (jarg3 == NULL)
{
jresult = (jint)ssl_client_new(arg1,arg2,NULL,0);
return jresult;
}
if (!SWIG_JavaArrayInSchar(jenv, &jarr, &arg3, jarg3)) return 0;
}
/* Lot's of work required for an ssl_read() due to its various custom
* requirements.
*/
%native (ssl_read) int ssl_read(SSL *ssl, jobject in_data);
%{
JNIEXPORT jint JNICALL Java_axTLSj_axtlsjJNI_ssl_1read(JNIEnv *jenv, jclass jcls, jint jarg1, jobject jarg2) {
jint jresult = 0 ;
SSL *arg1;
unsigned char *arg2;
jbyte *jarr;
int result;
JNIEnv e = *jenv;
jclass holder_class;
jfieldID fid;
arg1 = (SSL *)jarg1;
result = (int)ssl_read(arg1, &arg2);
/* find the "m_buf" entry in the SSLReadHolder class */
if (!(holder_class = e->GetObjectClass(jenv,jarg2)) ||
!(fid = e->GetFieldID(jenv,holder_class, "m_buf", "[B")))
return SSL_NOT_OK;
if (result > SSL_OK)
{
int i;
/* create a new byte array to hold the read data */
jbyteArray jarray = e->NewByteArray(jenv, result);
/* copy the bytes across to the java byte array */
jarr = e->GetByteArrayElements(jenv, jarray, 0);
for (i = 0; i < result; i++)
jarr[i] = (jbyte)arg2[i];
/* clean up and set the new m_buf object */
e->ReleaseByteArrayElements(jenv, jarray, jarr, 0);
e->SetObjectField(jenv, jarg2, fid, jarray);
}
else /* set to null */
e->SetObjectField(jenv, jarg2, fid, NULL);
jresult = (jint)result;
return jresult;
}
%}
/* Big hack to get hold of a socket's file descriptor */
%typemap (jtype) long "Object"
%typemap (jstype) long "Object"
%native (getFd) int getFd(long sock);
%{
JNIEXPORT jint JNICALL Java_axTLSj_axtlsjJNI_getFd(JNIEnv *env, jclass jcls, jobject sock)
{
JNIEnv e = *env;
jfieldID fid;
jobject impl;
jobject fdesc;
/* get the SocketImpl from the Socket */
if (!(jcls = e->GetObjectClass(env,sock)) ||
!(fid = e->GetFieldID(env,jcls,"impl","Ljava/net/SocketImpl;")) ||
!(impl = e->GetObjectField(env,sock,fid))) return -1;
/* get the FileDescriptor from the SocketImpl */
if (!(jcls = e->GetObjectClass(env,impl)) ||
!(fid = e->GetFieldID(env,jcls,"fd","Ljava/io/FileDescriptor;")) ||
!(fdesc = e->GetObjectField(env,impl,fid))) return -1;
/* get the fd from the FileDescriptor */
if (!(jcls = e->GetObjectClass(env,fdesc)) ||
!(fid = e->GetFieldID(env,jcls,"fd","I"))) return -1;
/* return the descriptor */
return e->GetIntField(env,fdesc,fid);
}
%}
#endif
/* Some SWIG magic to make the API a bit more Perl friendly */
#ifdef SWIGPERL
/* for ssl_session_id() */
%typemap(out) const unsigned char * {
SV *svs = newSVpv((unsigned char *)\$1, ssl_get_session_id_size((SSL const *)arg1));
\$result = newRV(svs);
sv_2mortal(\$result);
argvi++;
}
/* for ssl_write() */
%typemap(in) const unsigned char out_data[] {
SV* tempsv;
if (!SvROK(\$input))
croak("Argument \$argnum is not a reference.");
tempsv = SvRV(\$input);
if (SvTYPE(tempsv) != SVt_PV)
croak("Argument \$argnum is not an string.");
\$1 = (unsigned char *)SvPV(tempsv, PL_na);
}
/* for ssl_read() */
%typemap(in) unsigned char **in_data (unsigned char *buf) {
\$1 = &buf;
}
%typemap(argout) unsigned char **in_data {
if (result > SSL_OK) {
SV *svs = newSVpv(*\$1, result);
\$result = newRV(svs);
sv_2mortal(\$result);
argvi++;
}
}
/* for ssl_client_new() */
%typemap(in) const unsigned char session_id[] {
/* check for a reference */
if (SvOK(\$input) && SvROK(\$input)) {
SV* tempsv = SvRV(\$input);
if (SvTYPE(tempsv) != SVt_PV)
croak("Argument \$argnum is not an string.");
\$1 = (unsigned char *)SvPV(tempsv, PL_na);
}
else
\$1 = NULL;
}
#endif
/* Some SWIG magic to make the API a bit more Lua friendly */
#ifdef SWIGLUA
SWIG_NUMBER_TYPEMAP(unsigned char);
SWIG_TYPEMAP_NUM_ARR(uchar,unsigned char);
/* for ssl_session_id() */
%typemap(out) const unsigned char * {
int i;
lua_newtable(L);
for (i = 0; i < ssl_get_session_id_size((SSL const *)arg1); i++){
lua_pushnumber(L,(lua_Number)result[i]);
lua_rawseti(L,-2,i+1); /* -1 is the number, -2 is the table */
}
SWIG_arg++;
}
/* for ssl_read() */
%typemap(in) unsigned char **in_data (unsigned char *buf) {
\$1 = &buf;
}
%typemap(argout) unsigned char **in_data {
if (result > SSL_OK) {
int i;
lua_newtable(L);
for (i = 0; i < result; i++){
lua_pushnumber(L,(lua_Number)buf2[i]);
lua_rawseti(L,-2,i+1); /* -1 is the number, -2 is the table */
}
SWIG_arg++;
}
}
/* for ssl_client_new() */
%typemap(in) const unsigned char session_id[] {
if (lua_isnil(L,\$input))
\$1 = NULL;
else
\$1 = SWIG_get_uchar_num_array_fixed(L,\$input, ssl_get_session_id((SSL const *)\$1));
}
#endif
END
# Initialise loop variables
$skip = 1;
$splitLine = 0;
parseFile(@raw_data);
close(DATA_IN);
close(DATA_OUT);
#===============================================================