jurt/source/pipe/wrapper/wrapper.c

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include "sal/config.h"
  21
  22 #include <stddef.h>
  23
  24 #include <windows.h>
  25
  26 #include "jni.h"
  27 #include "sal/types.h"
  28
  29
  30 static HMODULE   module   = NULL;
  31 static HINSTANCE hInstDLL = NULL;
  32 static CRITICAL_SECTION CriticalSection;
  33
  34 void InitWrapper(void) {
  35     #define MAXPATH 512
  36     wchar_t path[MAXPATH];
  37     DWORD size;
  38
  39     size = GetModuleFileNameW(hInstDLL, path, MAXPATH);
  40     if (size == 0) {
  41         abort();
  42     }
  43     path[size - 5] = L'x'; /* ...\jpipe.dll -> ...\jpipx.dll */
  44     module = LoadLibraryExW(path, NULL, LOAD_WITH_ALTERED_SEARCH_PATH);
  45     if (module == NULL) {
  46         abort();
  47     }
  48 }
  49
  50 static FARPROC getFunction(char const * name)
  51 {
  52     {
  53         EnterCriticalSection(&CriticalSection);
  54
  55         if(module == NULL)
  56             InitWrapper();
  57
  58         LeaveCriticalSection(&CriticalSection);
  59     }
  60
  61     return GetProcAddress(module, name);
  62 }
  63
  64 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved) {
  65     (void) lpvReserved;
  66
  67     if (fdwReason == DLL_PROCESS_ATTACH)
  68     {
  69         InitializeCriticalSection(&CriticalSection);
  70         hInstDLL = hinstDLL;
  71     }
  72
  73     return TRUE;
  74 }
  75
  76 SAL_DLLPUBLIC_EXPORT void JNICALL
  77 Java_com_sun_star_lib_connections_pipe_PipeConnection_createJNI(
  78     JNIEnv * env, jobject obj_this, jstring name)
  79 {
  80     (*(void (*)(JNIEnv *, jobject, jstring))
  81      getFunction("PipeConnection_create"))(env, obj_this, name);
  82 }
  83
  84 SAL_DLLPUBLIC_EXPORT void JNICALL
  85 Java_com_sun_star_lib_connections_pipe_PipeConnection_closeJNI(
  86     JNIEnv * env, jobject obj_this)
  87 {
  88     (*(void (*)(JNIEnv *, jobject))
  89      getFunction("PipeConnection_close"))(env, obj_this);
  90 }
  91
  92 SAL_DLLPUBLIC_EXPORT jint JNICALL
  93 Java_com_sun_star_lib_connections_pipe_PipeConnection_readJNI(
  94     JNIEnv * env, jobject obj_this, jobjectArray buffer, jint len)
  95 {
  96     return (*(jint (*)(JNIEnv *, jobject, jobjectArray, jint))
  97             getFunction("PipeConnection_read"))(env, obj_this, buffer, len);
  98 }
  99
 100 SAL_DLLPUBLIC_EXPORT void JNICALL
 101 Java_com_sun_star_lib_connections_pipe_PipeConnection_writeJNI(
 102     JNIEnv * env, jobject obj_this, jbyteArray buffer)
 103 {
 104     (*(void (*)(JNIEnv *, jobject, jbyteArray))
 105      getFunction("PipeConnection_write"))(env, obj_this, buffer);
 106 }
 107
 108 SAL_DLLPUBLIC_EXPORT void JNICALL
 109 Java_com_sun_star_lib_connections_pipe_PipeConnection_flushJNI(
 110     JNIEnv * env, jobject obj_this)
 111 {
 112     (*(void (*)(JNIEnv *, jobject))
 113      getFunction("PipeConnection_flush"))(env, obj_this);
 114 }
 115
 116 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */