+#!/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);
+
+#===============================================================
+
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