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/**
* WinPR: Windows Portable Runtime
* Unicode Conversion (CRT)
*
* Copyright 2022 Armin Novak <anovak@thincast.com>
* Copyright 2022 Thincast Technologies GmbH
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <winpr/config.h>
#include <winpr/assert.h>
#include <winpr/string.h>
#include "../utils/android.h"
#ifndef MIN
#define MIN(a, b) (a) < (b) ? (a) : (b)
#endif
#include "../log.h"
#define TAG WINPR_TAG("unicode")
static int convert_int(JNIEnv* env, const void* data, size_t size, void* buffer, size_t buffersize,
BOOL toUTF16)
{
WINPR_ASSERT(env);
WINPR_ASSERT(data || (size == 0));
WINPR_ASSERT(buffer || (buffersize == 0));
jstring utf8 = (*env)->NewStringUTF(env, "UTF-8");
jstring utf16 = (*env)->NewStringUTF(env, "UTF-16LE");
jclass stringClass = (*env)->FindClass(env, "java/lang/String");
if (!utf8 || !utf16 || !stringClass)
{
WLog_ERR(TAG, "utf8-%p, utf16=%p, stringClass=%p", utf8, utf16, stringClass);
return -1;
}
jmethodID constructorID =
(*env)->GetMethodID(env, stringClass, "<init>", "([BLjava/lang/String;)V");
jmethodID getBytesID =
(*env)->GetMethodID(env, stringClass, "getBytes", "(Ljava/lang/String;)[B");
if (!constructorID || !getBytesID)
{
WLog_ERR(TAG, "constructorID=%p, getBytesID=%p", constructorID, getBytesID);
return -2;
}
jbyteArray ret = (*env)->NewByteArray(env, size);
if (!ret)
{
WLog_ERR(TAG, "NewByteArray(%" PRIuz ") failed", size);
return -3;
}
(*env)->SetByteArrayRegion(env, ret, 0, size, data);
jobject obj = (*env)->NewObject(env, stringClass, constructorID, ret, toUTF16 ? utf8 : utf16);
if (!obj)
{
WLog_ERR(TAG, "NewObject(String, byteArray, UTF-%d) failed", toUTF16 ? 16 : 8);
return -4;
}
jbyteArray res = (*env)->CallObjectMethod(env, obj, getBytesID, toUTF16 ? utf16 : utf8);
if (!res)
{
WLog_ERR(TAG, "CallObjectMethod(String, getBytes, UTF-%d) failed", toUTF16 ? 16 : 8);
return -4;
}
jsize rlen = (*env)->GetArrayLength(env, res);
if (buffersize > 0)
{
if (rlen > buffersize)
{
SetLastError(ERROR_INSUFFICIENT_BUFFER);
return 0;
}
rlen = MIN(rlen, buffersize);
(*env)->GetByteArrayRegion(env, res, 0, rlen, buffer);
}
if (toUTF16)
rlen /= sizeof(WCHAR);
return rlen;
}
static int convert(const void* data, size_t size, void* buffer, size_t buffersize, BOOL toUTF16)
{
int rc;
JNIEnv* env = NULL;
jboolean attached = winpr_jni_attach_thread(&env);
rc = convert_int(env, data, size, buffer, buffersize, toUTF16);
if (attached)
winpr_jni_detach_thread();
return rc;
}
int int_MultiByteToWideChar(UINT CodePage, DWORD dwFlags, LPCSTR lpMultiByteStr, int cbMultiByte,
LPWSTR lpWideCharStr, int cchWideChar)
{
size_t cbCharLen = (size_t)cbMultiByte;
WINPR_UNUSED(dwFlags);
/* If cbMultiByte is 0, the function fails */
if ((cbMultiByte == 0) || (cbMultiByte < -1))
return 0;
if (cchWideChar < 0)
return -1;
if (cbMultiByte < 0)
{
const size_t len = strlen(lpMultiByteStr);
if (len >= INT32_MAX)
return 0;
cbCharLen = (int)len + 1;
}
else
cbCharLen = cbMultiByte;
WINPR_ASSERT(lpMultiByteStr);
switch (CodePage)
{
case CP_ACP:
case CP_UTF8:
break;
default:
WLog_ERR(TAG, "Unsupported encoding %u", CodePage);
return 0;
}
return convert(lpMultiByteStr, cbCharLen, lpWideCharStr, cchWideChar * sizeof(WCHAR), TRUE);
}
int int_WideCharToMultiByte(UINT CodePage, DWORD dwFlags, LPCWSTR lpWideCharStr, int cchWideChar,
LPSTR lpMultiByteStr, int cbMultiByte, LPCSTR lpDefaultChar,
LPBOOL lpUsedDefaultChar)
{
size_t cbCharLen = (size_t)cchWideChar;
WINPR_UNUSED(dwFlags);
/* If cchWideChar is 0, the function fails */
if ((cchWideChar == 0) || (cchWideChar < -1))
return 0;
if (cbMultiByte < 0)
return -1;
WINPR_ASSERT(lpWideCharStr);
/* If cchWideChar is -1, the string is null-terminated */
if (cchWideChar == -1)
{
const size_t len = _wcslen(lpWideCharStr);
if (len >= INT32_MAX)
return 0;
cbCharLen = (int)len + 1;
}
else
cbCharLen = cchWideChar;
/*
* if cbMultiByte is 0, the function returns the required buffer size
* in bytes for lpMultiByteStr and makes no use of the output parameter itself.
*/
return convert(lpWideCharStr, cbCharLen * sizeof(WCHAR), lpMultiByteStr, cbMultiByte, FALSE);
}
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