Milestone 5: deliver embedded RDP sessions and lifecycle hardening
This commit is contained in:
Keith Smith
652
third_party/FreeRDP/winpr/libwinpr/crt/unicode.c
vendored
Normal file
652
third_party/FreeRDP/winpr/libwinpr/crt/unicode.c
vendored
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@@ -0,0 +1,652 @@
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/**
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* WinPR: Windows Portable Runtime
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* Unicode Conversion (CRT)
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*
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* Copyright 2012 Marc-Andre Moreau <marcandre.moreau@gmail.com>
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* Copyright 2022 Armin Novak <anovak@thincast.com>
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* Copyright 2022 Thincast Technologies GmbH
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <winpr/config.h>
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#include <winpr/assert.h>
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#include <errno.h>
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#include <wctype.h>
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#include <winpr/crt.h>
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#include <winpr/error.h>
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#include <winpr/print.h>
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#ifndef _WIN32
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#include "unicode.h"
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/**
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* Notes on cross-platform Unicode portability:
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*
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* Unicode has many possible Unicode Transformation Format (UTF) encodings,
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* where some of the most commonly used are UTF-8, UTF-16 and sometimes UTF-32.
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*
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* The number in the UTF encoding name (8, 16, 32) refers to the number of bits
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* per code unit. A code unit is the minimal bit combination that can represent
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* a unit of encoded text in the given encoding. For instance, UTF-8 encodes
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* the English alphabet using 8 bits (or one byte) each, just like in ASCII.
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*
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* However, the total number of code points (values in the Unicode codespace)
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* only fits completely within 32 bits. This means that for UTF-8 and UTF-16,
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* more than one code unit may be required to fully encode a specific value.
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* UTF-8 and UTF-16 are variable-width encodings, while UTF-32 is fixed-width.
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*
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* UTF-8 has the advantage of being backwards compatible with ASCII, and is
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* one of the most commonly used Unicode encoding.
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*
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* UTF-16 is used everywhere in the Windows API. The strategy employed by
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* Microsoft to provide backwards compatibility in their API was to create
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* an ANSI and a Unicode version of the same function, ending with A (ANSI)
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* and W (Wide character, or UTF-16 Unicode). In headers, the original
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* function name is replaced by a macro that defines to either the ANSI
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* or Unicode version based on the definition of the _UNICODE macro.
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*
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* UTF-32 has the advantage of being fixed width, but wastes a lot of space
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* for English text (4x more than UTF-8, 2x more than UTF-16).
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*
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* In C, wide character strings are often defined with the wchar_t type.
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* Many functions are provided to deal with those wide character strings,
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* such as wcslen (strlen equivalent) or wprintf (printf equivalent).
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*
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* This may lead to some confusion, since many of these functions exist
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* on both Windows and Linux, but they are *not* the same!
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*
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* This sample hello world is a good example:
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*
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* #include <wchar.h>
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*
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* wchar_t hello[] = L"Hello, World!\n";
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*
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* int main(int argc, char** argv)
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* {
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* wprintf(hello);
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* wprintf(L"sizeof(wchar_t): %d\n", sizeof(wchar_t));
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* return 0;
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* }
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*
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* There is a reason why the sample prints the size of the wchar_t type:
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* On Windows, wchar_t is two bytes (UTF-16), while on most other systems
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* it is 4 bytes (UTF-32). This means that if you write code on Windows,
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* use L"" to define a string which is meant to be UTF-16 and not UTF-32,
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* you will have a little surprise when trying to port your code to Linux.
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*
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* Since the Windows API uses UTF-16, not UTF-32, WinPR defines the WCHAR
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* type to always be 2-bytes long and uses it instead of wchar_t. Do not
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* ever use wchar_t with WinPR unless you know what you are doing.
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*
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* As for L"", it is unfortunately unusable in a portable way, unless a
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* special option is passed to GCC to define wchar_t as being two bytes.
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* For string constants that must be UTF-16, it is a pain, but they can
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* be defined in a portable way like this:
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*
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* WCHAR hello[] = { 'H','e','l','l','o','\0' };
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*
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* Such strings cannot be passed to native functions like wcslen(), which
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* may expect a different wchar_t size. For this reason, WinPR provides
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* _wcslen, which expects UTF-16 WCHAR strings on all platforms.
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*
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*/
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/** \deprecated We no longer export this function, see ConvertUtf8ToWChar family of functions for a
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* replacement
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*
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* Conversion to Unicode (UTF-16)
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* MultiByteToWideChar: http://msdn.microsoft.com/en-us/library/windows/desktop/dd319072/
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*
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* cbMultiByte is an input size in bytes (BYTE)
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* cchWideChar is an output size in wide characters (WCHAR)
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*
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* Null-terminated UTF-8 strings:
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*
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* cchWideChar *cannot* be assumed to be cbMultiByte since UTF-8 is variable-width!
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*
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* Instead, obtain the required cchWideChar output size like this:
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* cchWideChar = MultiByteToWideChar(CP_UTF8, 0, (LPCSTR) lpMultiByteStr, -1, nullptr, 0);
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*
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* A value of -1 for cbMultiByte indicates that the input string is null-terminated,
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* and the null terminator *will* be processed. The size returned by MultiByteToWideChar
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* will therefore include the null terminator. Equivalent behavior can be obtained by
|
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* computing the length in bytes of the input buffer, including the null terminator:
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*
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* cbMultiByte = strlen((char*) lpMultiByteStr) + 1;
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*
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* An output buffer of the proper size can then be allocated:
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*
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* lpWideCharStr = (LPWSTR) malloc(cchWideChar * sizeof(WCHAR));
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*
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* Since cchWideChar is an output size in wide characters, the actual buffer size is:
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* (cchWideChar * sizeof(WCHAR)) or (cchWideChar * 2)
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*
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* Finally, perform the conversion:
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*
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* cchWideChar = MultiByteToWideChar(CP_UTF8, 0, (LPCSTR) lpMultiByteStr, -1, lpWideCharStr,
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* cchWideChar);
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*
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* The value returned by MultiByteToWideChar corresponds to the number of wide characters written
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* to the output buffer, and should match the value obtained on the first call to
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* MultiByteToWideChar.
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*
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*/
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#if !defined(WITH_WINPR_DEPRECATED)
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static
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#endif
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int
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MultiByteToWideChar(UINT CodePage, DWORD dwFlags, LPCSTR lpMultiByteStr, int cbMultiByte,
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||||
LPWSTR lpWideCharStr, int cchWideChar)
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{
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return int_MultiByteToWideChar(CodePage, dwFlags, lpMultiByteStr, cbMultiByte, lpWideCharStr,
|
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cchWideChar);
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}
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/** \deprecated We no longer export this function, see ConvertWCharToUtf8 family of functions for a
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* replacement
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*
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* Conversion from Unicode (UTF-16)
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* WideCharToMultiByte: http://msdn.microsoft.com/en-us/library/windows/desktop/dd374130/
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*
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* cchWideChar is an input size in wide characters (WCHAR)
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* cbMultiByte is an output size in bytes (BYTE)
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*
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* Null-terminated UTF-16 strings:
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*
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* cbMultiByte *cannot* be assumed to be cchWideChar since UTF-8 is variable-width!
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*
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* Instead, obtain the required cbMultiByte output size like this:
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* cbMultiByte = WideCharToMultiByte(CP_UTF8, 0, (LPCWSTR) lpWideCharStr, -1, nullptr, 0, nullptr,
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* nullptr);
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*
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* A value of -1 for cbMultiByte indicates that the input string is null-terminated,
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* and the null terminator *will* be processed. The size returned by WideCharToMultiByte
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||||
* will therefore include the null terminator. Equivalent behavior can be obtained by
|
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* computing the length in bytes of the input buffer, including the null terminator:
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*
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* cchWideChar = _wcslen((WCHAR*) lpWideCharStr) + 1;
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*
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* An output buffer of the proper size can then be allocated:
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* lpMultiByteStr = (LPSTR) malloc(cbMultiByte);
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*
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* Since cbMultiByte is an output size in bytes, it is the same as the buffer size
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*
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* Finally, perform the conversion:
|
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*
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* cbMultiByte = WideCharToMultiByte(CP_UTF8, 0, (LPCWSTR) lpWideCharStr, -1, lpMultiByteStr,
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* cbMultiByte, nullptr, nullptr);
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*
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* The value returned by WideCharToMultiByte corresponds to the number of bytes written
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* to the output buffer, and should match the value obtained on the first call to
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* WideCharToMultiByte.
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*
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*/
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#if !defined(WITH_WINPR_DEPRECATED)
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static
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#endif
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int
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WideCharToMultiByte(UINT CodePage, DWORD dwFlags, LPCWSTR lpWideCharStr, int cchWideChar,
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LPSTR lpMultiByteStr, int cbMultiByte, LPCSTR lpDefaultChar,
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LPBOOL lpUsedDefaultChar)
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{
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return int_WideCharToMultiByte(CodePage, dwFlags, lpWideCharStr, cchWideChar, lpMultiByteStr,
|
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cbMultiByte, lpDefaultChar, lpUsedDefaultChar);
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}
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#endif
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/**
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* ConvertToUnicode is a convenience wrapper for MultiByteToWideChar:
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*
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* If the lpWideCharStr parameter for the converted string points to nullptr
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* or if the cchWideChar parameter is set to 0 this function will automatically
|
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* allocate the required memory which is guaranteed to be null-terminated
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* after the conversion, even if the source c string isn't.
|
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*
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* If the cbMultiByte parameter is set to -1 the passed lpMultiByteStr must
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* be null-terminated and the required length for the converted string will be
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* calculated accordingly.
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*/
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#if defined(WITH_WINPR_DEPRECATED)
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int ConvertToUnicode(UINT CodePage, DWORD dwFlags, LPCSTR lpMultiByteStr, int cbMultiByte,
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LPWSTR* lpWideCharStr, int cchWideChar)
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{
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int status = 0;
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BOOL allocate = FALSE;
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if (!lpMultiByteStr)
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return 0;
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if (!lpWideCharStr)
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return 0;
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if (cbMultiByte == -1)
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{
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size_t len = strnlen(lpMultiByteStr, INT_MAX);
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if (len >= INT_MAX)
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return 0;
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cbMultiByte = (int)(len + 1);
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}
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if (cchWideChar == 0)
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{
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cchWideChar =
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MultiByteToWideChar(CodePage, dwFlags, lpMultiByteStr, cbMultiByte, nullptr, 0);
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allocate = TRUE;
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}
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else if (!(*lpWideCharStr))
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allocate = TRUE;
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|
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if (cchWideChar < 1)
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return 0;
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|
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if (allocate)
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{
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*lpWideCharStr = (LPWSTR)calloc((size_t)cchWideChar + 1ull, sizeof(WCHAR));
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|
||||
if (!(*lpWideCharStr))
|
||||
{
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// SetLastError(ERROR_INSUFFICIENT_BUFFER);
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return 0;
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}
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}
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status = MultiByteToWideChar(CodePage, dwFlags, lpMultiByteStr, cbMultiByte, *lpWideCharStr,
|
||||
cchWideChar);
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|
||||
if (status != cchWideChar)
|
||||
{
|
||||
if (allocate)
|
||||
{
|
||||
free(*lpWideCharStr);
|
||||
*lpWideCharStr = nullptr;
|
||||
status = 0;
|
||||
}
|
||||
}
|
||||
|
||||
return status;
|
||||
}
|
||||
#endif
|
||||
|
||||
/**
|
||||
* ConvertFromUnicode is a convenience wrapper for WideCharToMultiByte:
|
||||
*
|
||||
* If the lpMultiByteStr parameter for the converted string points to nullptr
|
||||
* or if the cbMultiByte parameter is set to 0 this function will automatically
|
||||
* allocate the required memory which is guaranteed to be null-terminated
|
||||
* after the conversion, even if the source unicode string isn't.
|
||||
*
|
||||
* If the cchWideChar parameter is set to -1 the passed lpWideCharStr must
|
||||
* be null-terminated and the required length for the converted string will be
|
||||
* calculated accordingly.
|
||||
*/
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||||
#if defined(WITH_WINPR_DEPRECATED)
|
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int ConvertFromUnicode(UINT CodePage, DWORD dwFlags, LPCWSTR lpWideCharStr, int cchWideChar,
|
||||
LPSTR* lpMultiByteStr, int cbMultiByte, LPCSTR lpDefaultChar,
|
||||
LPBOOL lpUsedDefaultChar)
|
||||
{
|
||||
int status = 0;
|
||||
BOOL allocate = FALSE;
|
||||
|
||||
if (!lpWideCharStr)
|
||||
return 0;
|
||||
|
||||
if (!lpMultiByteStr)
|
||||
return 0;
|
||||
|
||||
if (cchWideChar == -1)
|
||||
cchWideChar = (int)(_wcslen(lpWideCharStr) + 1);
|
||||
|
||||
if (cbMultiByte == 0)
|
||||
{
|
||||
cbMultiByte = WideCharToMultiByte(CodePage, dwFlags, lpWideCharStr, cchWideChar, nullptr, 0,
|
||||
nullptr, nullptr);
|
||||
allocate = TRUE;
|
||||
}
|
||||
else if (!(*lpMultiByteStr))
|
||||
allocate = TRUE;
|
||||
|
||||
if (cbMultiByte < 1)
|
||||
return 0;
|
||||
|
||||
if (allocate)
|
||||
{
|
||||
*lpMultiByteStr = (LPSTR)calloc(1, (size_t)cbMultiByte + 1ull);
|
||||
|
||||
if (!(*lpMultiByteStr))
|
||||
{
|
||||
// SetLastError(ERROR_INSUFFICIENT_BUFFER);
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
status = WideCharToMultiByte(CodePage, dwFlags, lpWideCharStr, cchWideChar, *lpMultiByteStr,
|
||||
cbMultiByte, lpDefaultChar, lpUsedDefaultChar);
|
||||
|
||||
if ((status != cbMultiByte) && allocate)
|
||||
{
|
||||
status = 0;
|
||||
}
|
||||
|
||||
if ((status <= 0) && allocate)
|
||||
{
|
||||
free(*lpMultiByteStr);
|
||||
*lpMultiByteStr = nullptr;
|
||||
}
|
||||
|
||||
return status;
|
||||
}
|
||||
#endif
|
||||
|
||||
/**
|
||||
* Swap Unicode byte order (UTF16LE <-> UTF16BE)
|
||||
*/
|
||||
|
||||
const WCHAR* ByteSwapUnicode(WCHAR* wstr, size_t length)
|
||||
{
|
||||
WINPR_ASSERT(wstr || (length == 0));
|
||||
|
||||
for (size_t x = 0; x < length; x++)
|
||||
wstr[x] = _byteswap_ushort(wstr[x]);
|
||||
return wstr;
|
||||
}
|
||||
|
||||
SSIZE_T ConvertWCharToUtf8(const WCHAR* wstr, char* str, size_t len)
|
||||
{
|
||||
if (!wstr)
|
||||
{
|
||||
if (str && len)
|
||||
str[0] = 0;
|
||||
return 0;
|
||||
}
|
||||
|
||||
const size_t wlen = _wcslen(wstr);
|
||||
return ConvertWCharNToUtf8(wstr, wlen + 1, str, len);
|
||||
}
|
||||
|
||||
SSIZE_T ConvertWCharNToUtf8(const WCHAR* wstr, size_t wlen, char* str, size_t len)
|
||||
{
|
||||
BOOL isNullTerminated = FALSE;
|
||||
if (wlen == 0)
|
||||
return 0;
|
||||
|
||||
WINPR_ASSERT(wstr);
|
||||
size_t iwlen = _wcsnlen(wstr, wlen);
|
||||
|
||||
if ((len > INT32_MAX) || (wlen > INT32_MAX))
|
||||
{
|
||||
SetLastError(ERROR_INVALID_PARAMETER);
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (iwlen < wlen)
|
||||
{
|
||||
isNullTerminated = TRUE;
|
||||
iwlen++;
|
||||
}
|
||||
const int rc =
|
||||
WideCharToMultiByte(CP_UTF8, 0, wstr, (int)iwlen, str, (int)len, nullptr, nullptr);
|
||||
if ((rc <= 0) || ((len > 0) && ((size_t)rc > len)))
|
||||
return -1;
|
||||
else if (!isNullTerminated)
|
||||
{
|
||||
if (str && ((size_t)rc < len))
|
||||
str[rc] = '\0';
|
||||
return rc;
|
||||
}
|
||||
else if ((size_t)rc == len)
|
||||
{
|
||||
if (str && (str[rc - 1] != '\0'))
|
||||
return rc;
|
||||
}
|
||||
return rc - 1;
|
||||
}
|
||||
|
||||
SSIZE_T ConvertMszWCharNToUtf8(const WCHAR* wstr, size_t wlen, char* str, size_t len)
|
||||
{
|
||||
if (wlen == 0)
|
||||
return 0;
|
||||
|
||||
WINPR_ASSERT(wstr);
|
||||
|
||||
if ((len > INT32_MAX) || (wlen > INT32_MAX))
|
||||
{
|
||||
SetLastError(ERROR_INVALID_PARAMETER);
|
||||
return -1;
|
||||
}
|
||||
|
||||
const int iwlen = (int)len;
|
||||
const int rc = WideCharToMultiByte(CP_UTF8, 0, wstr, (int)wlen, str, iwlen, nullptr, nullptr);
|
||||
if ((rc <= 0) || ((len > 0) && (rc > iwlen)))
|
||||
return -1;
|
||||
|
||||
return rc;
|
||||
}
|
||||
|
||||
SSIZE_T ConvertUtf8ToWChar(const char* str, WCHAR* wstr, size_t wlen)
|
||||
{
|
||||
if (!str)
|
||||
{
|
||||
if (wstr && wlen)
|
||||
wstr[0] = 0;
|
||||
return 0;
|
||||
}
|
||||
|
||||
const size_t len = strlen(str);
|
||||
return ConvertUtf8NToWChar(str, len + 1, wstr, wlen);
|
||||
}
|
||||
|
||||
SSIZE_T ConvertUtf8NToWChar(const char* str, size_t len, WCHAR* wstr, size_t wlen)
|
||||
{
|
||||
size_t ilen = strnlen(str, len);
|
||||
BOOL isNullTerminated = FALSE;
|
||||
if (len == 0)
|
||||
return 0;
|
||||
|
||||
WINPR_ASSERT(str);
|
||||
|
||||
if ((len > INT32_MAX) || (wlen > INT32_MAX))
|
||||
{
|
||||
SetLastError(ERROR_INVALID_PARAMETER);
|
||||
return -1;
|
||||
}
|
||||
if (ilen < len)
|
||||
{
|
||||
isNullTerminated = TRUE;
|
||||
ilen++;
|
||||
}
|
||||
|
||||
const int iwlen = (int)wlen;
|
||||
const int rc = MultiByteToWideChar(CP_UTF8, 0, str, (int)ilen, wstr, iwlen);
|
||||
if ((rc <= 0) || ((wlen > 0) && (rc > iwlen)))
|
||||
return -1;
|
||||
if (!isNullTerminated)
|
||||
{
|
||||
if (wstr && (rc < iwlen))
|
||||
wstr[rc] = '\0';
|
||||
return rc;
|
||||
}
|
||||
else if (rc == iwlen)
|
||||
{
|
||||
if (wstr && (wstr[rc - 1] != '\0'))
|
||||
return rc;
|
||||
}
|
||||
return rc - 1;
|
||||
}
|
||||
|
||||
SSIZE_T ConvertMszUtf8NToWChar(const char* str, size_t len, WCHAR* wstr, size_t wlen)
|
||||
{
|
||||
if (len == 0)
|
||||
return 0;
|
||||
|
||||
WINPR_ASSERT(str);
|
||||
|
||||
if ((len > INT32_MAX) || (wlen > INT32_MAX))
|
||||
{
|
||||
SetLastError(ERROR_INVALID_PARAMETER);
|
||||
return -1;
|
||||
}
|
||||
|
||||
const int iwlen = (int)wlen;
|
||||
const int rc = MultiByteToWideChar(CP_UTF8, 0, str, (int)len, wstr, iwlen);
|
||||
if ((rc <= 0) || ((wlen > 0) && (rc > iwlen)))
|
||||
return -1;
|
||||
|
||||
return rc;
|
||||
}
|
||||
|
||||
char* ConvertWCharToUtf8Alloc(const WCHAR* wstr, size_t* pUtfCharLength)
|
||||
{
|
||||
char* tmp = nullptr;
|
||||
const SSIZE_T rc = ConvertWCharToUtf8(wstr, nullptr, 0);
|
||||
if (pUtfCharLength)
|
||||
*pUtfCharLength = 0;
|
||||
if (rc < 0)
|
||||
return nullptr;
|
||||
tmp = calloc((size_t)rc + 1ull, sizeof(char));
|
||||
if (!tmp)
|
||||
return nullptr;
|
||||
const SSIZE_T rc2 = ConvertWCharToUtf8(wstr, tmp, (size_t)rc + 1ull);
|
||||
if (rc2 < 0)
|
||||
{
|
||||
free(tmp);
|
||||
return nullptr;
|
||||
}
|
||||
WINPR_ASSERT(rc == rc2);
|
||||
if (pUtfCharLength)
|
||||
*pUtfCharLength = (size_t)rc2;
|
||||
return tmp;
|
||||
}
|
||||
|
||||
char* ConvertWCharNToUtf8Alloc(const WCHAR* wstr, size_t wlen, size_t* pUtfCharLength)
|
||||
{
|
||||
char* tmp = nullptr;
|
||||
const SSIZE_T rc = ConvertWCharNToUtf8(wstr, wlen, nullptr, 0);
|
||||
|
||||
if (pUtfCharLength)
|
||||
*pUtfCharLength = 0;
|
||||
if (rc < 0)
|
||||
return nullptr;
|
||||
tmp = calloc((size_t)rc + 1ull, sizeof(char));
|
||||
if (!tmp)
|
||||
return nullptr;
|
||||
const SSIZE_T rc2 = ConvertWCharNToUtf8(wstr, wlen, tmp, (size_t)rc + 1ull);
|
||||
if (rc2 < 0)
|
||||
{
|
||||
free(tmp);
|
||||
return nullptr;
|
||||
}
|
||||
WINPR_ASSERT(rc == rc2);
|
||||
if (pUtfCharLength)
|
||||
*pUtfCharLength = (size_t)rc2;
|
||||
return tmp;
|
||||
}
|
||||
|
||||
char* ConvertMszWCharNToUtf8Alloc(const WCHAR* wstr, size_t wlen, size_t* pUtfCharLength)
|
||||
{
|
||||
char* tmp = nullptr;
|
||||
const SSIZE_T rc = ConvertMszWCharNToUtf8(wstr, wlen, nullptr, 0);
|
||||
|
||||
if (pUtfCharLength)
|
||||
*pUtfCharLength = 0;
|
||||
if (rc < 0)
|
||||
return nullptr;
|
||||
tmp = calloc((size_t)rc + 1ull, sizeof(char));
|
||||
if (!tmp)
|
||||
return nullptr;
|
||||
const SSIZE_T rc2 = ConvertMszWCharNToUtf8(wstr, wlen, tmp, (size_t)rc + 1ull);
|
||||
if (rc2 < 0)
|
||||
{
|
||||
free(tmp);
|
||||
return nullptr;
|
||||
}
|
||||
WINPR_ASSERT(rc == rc2);
|
||||
if (pUtfCharLength)
|
||||
*pUtfCharLength = (size_t)rc2;
|
||||
return tmp;
|
||||
}
|
||||
|
||||
WCHAR* ConvertUtf8ToWCharAlloc(const char* str, size_t* pSize)
|
||||
{
|
||||
WCHAR* tmp = nullptr;
|
||||
const SSIZE_T rc = ConvertUtf8ToWChar(str, nullptr, 0);
|
||||
if (pSize)
|
||||
*pSize = 0;
|
||||
if (rc < 0)
|
||||
return nullptr;
|
||||
tmp = calloc((size_t)rc + 1ull, sizeof(WCHAR));
|
||||
if (!tmp)
|
||||
return nullptr;
|
||||
const SSIZE_T rc2 = ConvertUtf8ToWChar(str, tmp, (size_t)rc + 1ull);
|
||||
if (rc2 < 0)
|
||||
{
|
||||
free(tmp);
|
||||
return nullptr;
|
||||
}
|
||||
WINPR_ASSERT(rc == rc2);
|
||||
if (pSize)
|
||||
*pSize = (size_t)rc2;
|
||||
return tmp;
|
||||
}
|
||||
|
||||
WCHAR* ConvertUtf8NToWCharAlloc(const char* str, size_t len, size_t* pSize)
|
||||
{
|
||||
WCHAR* tmp = nullptr;
|
||||
const SSIZE_T rc = ConvertUtf8NToWChar(str, len, nullptr, 0);
|
||||
if (pSize)
|
||||
*pSize = 0;
|
||||
if (rc < 0)
|
||||
return nullptr;
|
||||
tmp = calloc((size_t)rc + 1ull, sizeof(WCHAR));
|
||||
if (!tmp)
|
||||
return nullptr;
|
||||
const SSIZE_T rc2 = ConvertUtf8NToWChar(str, len, tmp, (size_t)rc + 1ull);
|
||||
if (rc2 < 0)
|
||||
{
|
||||
free(tmp);
|
||||
return nullptr;
|
||||
}
|
||||
WINPR_ASSERT(rc == rc2);
|
||||
if (pSize)
|
||||
*pSize = (size_t)rc2;
|
||||
return tmp;
|
||||
}
|
||||
|
||||
WCHAR* ConvertMszUtf8NToWCharAlloc(const char* str, size_t len, size_t* pSize)
|
||||
{
|
||||
WCHAR* tmp = nullptr;
|
||||
const SSIZE_T rc = ConvertMszUtf8NToWChar(str, len, nullptr, 0);
|
||||
if (pSize)
|
||||
*pSize = 0;
|
||||
if (rc < 0)
|
||||
return nullptr;
|
||||
tmp = calloc((size_t)rc + 1ull, sizeof(WCHAR));
|
||||
if (!tmp)
|
||||
return nullptr;
|
||||
const SSIZE_T rc2 = ConvertMszUtf8NToWChar(str, len, tmp, (size_t)rc + 1ull);
|
||||
if (rc2 < 0)
|
||||
{
|
||||
free(tmp);
|
||||
return nullptr;
|
||||
}
|
||||
WINPR_ASSERT(rc == rc2);
|
||||
if (pSize)
|
||||
*pSize = (size_t)rc2;
|
||||
return tmp;
|
||||
}
|
||||
Reference in New Issue
Block a user