ANSIMARSHALER.C

// Copyright (c) 1997 Microsoft Corporation.  All rights reserved. 
 
#pragma hdrstop 
 
#define INITGUID 1 
#include <windows.h> 
#include "native.h" // Raw Native Interface declarations. 
 
 
typedef CHAR *PSTR, **PPSTR; 
 
 
 
#ifdef __cplusplus 
#define EXTERNC     extern "C" 
#else 
#define EXTERNC 
#endif 
 
 
// Macro for declaring RNI Java methods's (and encapsulating the java class package.) 
// TODO: Replace "AnsiMarshaler" with the name of your hook class.  
#define JAVAMETHOD(typ, name) \ 
    __declspec(dllexport) \ 
    EXTERNC \ 
    typ __cdecl AnsiMarshaler_##name 
 
 
#define LOGCALL(hookname) OutputDebugString("AnsiMarshaler." hookname "() called.\n") 
 
// Export that tells what RNI version we were built under. 
DWORD __cdecl RNIGetCompatibleVersion() 
{ 
  return RNIVER; 
} 
 
 
//========================================================================== 
// toJava 
//========================================================================== 
JAVAMETHOD(HString*, toJava) (OBJECT*x, PPSTR pPSTR, int flags) 
{ 
    PSTR pstr = *pPSTR; 
 
    LOGCALL("toJava"); 
 
    if (pstr == NULL) { 
        return NULL; 
    } else { 
        return makeJavaString(pstr, lstrlen(pstr)); 
    } 
} 
 
 
 
 
//========================================================================== 
// toExternal 
//========================================================================== 
JAVAMETHOD(void, toExternal) (OBJECT*x, HString* javaval, int flags, PPSTR pPSTR) 
{ 
    PSTR pstr = NULL; 
 
    LOGCALL("toExternal"); 
 
    if (javaval != NULL) { 
 
        DWORD len = javaStringLength(javaval); 
        pstr = (LPSTR)CoTaskMemAlloc(len+1); 
        if (!pstr) { 
            SignalErrorPrintf("java/lang/OutOfMemoryError", "Could not allocate from task heap!"); 
        } else { 
            char msg[100]; 
            DWORD i; 
            unicode *pwc = javaStringStart(javaval); 
 
            wsprintf(msg, "Hook created new string at %lxh\n", pstr); 
            OutputDebugString(msg); 
 
            for (i = 0; i < len; i++) { 
                pstr[i] = (CHAR)(pwc[i]); 
            } 
            pstr[i] = '\0'; 
        } 
 
    } 
    *pPSTR = pstr; 
} 
 
 
//========================================================================== 
// releaseExternal 
//========================================================================== 
JAVAMETHOD(void, releaseExternal) (OBJECT*x, PPSTR pPSTR, int flags) 
{ 
    PSTR pstr = *pPSTR; 
 
    LOGCALL("releaseExternal"); 
 
    if (pstr) { 
        char msg[100]; 
        wsprintf(msg, "Hook freeing string at %lxh\n", pstr); 
        OutputDebugString(msg); 
 
        CoTaskMemFree(pstr); 
    } 
} 
 
 
 
 
 
//========================================================================== 
// TODO: Remove this copy of DllMain if you are embedding this file in your 
//  own DLL. 
// DLL Loader entry point. 
//========================================================================== 
BOOL WINAPI DllMain(HINSTANCE hmod, DWORD dwReason, 
                                PVOID pvReserved) 
{ 
   return TRUE; 
}