142 lines
4 KiB
C++
142 lines
4 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include <sal/config.h>
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#include <cstddef>
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#define WIN32_LEAN_AND_MEAN
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#if defined _MSC_VER
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#pragma warning(push, 1)
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#endif
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#include <windows.h>
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#include <shlwapi.h>
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#if defined _MSC_VER
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#pragma warning(pop)
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#endif
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#include <tools/pathutils.hxx>
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#include "extendloaderenvironment.hxx"
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namespace {
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void fail() {
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LPWSTR buf = NULL;
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FormatMessageW(
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FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM, NULL,
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GetLastError(), 0, reinterpret_cast< LPWSTR >(&buf), 0, NULL);
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MessageBoxW(NULL, buf, NULL, MB_OK | MB_ICONERROR);
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LocalFree(buf);
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TerminateProcess(GetCurrentProcess(), 255);
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}
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bool contains(WCHAR const * paths, WCHAR const * path, WCHAR const * pathEnd) {
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WCHAR const * q = path;
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for (WCHAR const * p = paths;; ++p) {
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WCHAR c = *p;
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switch (c) {
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case L'\0':
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return q == pathEnd;
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case L';':
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if (q == pathEnd) {
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return true;
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}
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q = path;
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break;
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default:
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if (q != NULL) {
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if (q != pathEnd && *q == c) {
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++q;
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} else {
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q = NULL;
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}
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}
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break;
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}
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}
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}
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}
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namespace desktop_win32 {
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void extendLoaderEnvironment(WCHAR * binPath, WCHAR * iniDirectory) {
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if (!GetModuleFileNameW(NULL, iniDirectory, MAX_PATH)) {
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fail();
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}
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WCHAR * iniDirEnd = tools::filename(iniDirectory);
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WCHAR name[MAX_PATH + MY_LENGTH(L".bin")];
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// hopefully std::size_t is large enough to not overflow
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WCHAR * nameEnd = name;
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for (WCHAR * p = iniDirEnd; *p != L'\0'; ++p) {
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*nameEnd++ = *p;
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}
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if (!(nameEnd - name >= 4 && nameEnd[-4] == L'.' &&
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(nameEnd[-3] == L'E' || nameEnd[-3] == L'e') &&
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(nameEnd[-2] == L'X' || nameEnd[-2] == L'x') &&
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(nameEnd[-1] == L'E' || nameEnd[-1] == L'e')))
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{
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*nameEnd = L'.';
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nameEnd += 4;
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}
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nameEnd[-3] = 'b';
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nameEnd[-2] = 'i';
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nameEnd[-1] = 'n';
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tools::buildPath(binPath, iniDirectory, iniDirEnd, name, nameEnd - name);
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*iniDirEnd = L'\0';
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std::size_t const maxEnv = 32767;
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WCHAR pad[MAX_PATH + maxEnv];
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// hopefully std::size_t is large enough to not overflow
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WCHAR * pathEnd = tools::buildPath(
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pad, iniDirectory, iniDirEnd, MY_STRING(L"..\\ure-link"));
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if (pathEnd == NULL) {
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fail();
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}
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pathEnd = tools::resolveLink(pad);
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if (pathEnd == NULL) {
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fail();
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}
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pathEnd = tools::buildPath(pad, pad, pathEnd, MY_STRING(L"\\bin"));
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if (pathEnd == NULL) {
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fail();
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}
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WCHAR env[maxEnv];
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DWORD n = GetEnvironmentVariableW(L"PATH", env, maxEnv);
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if ((n >= maxEnv || n == 0) && GetLastError() != ERROR_ENVVAR_NOT_FOUND) {
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fail();
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}
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env[n] = L'\0';
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if (!contains(env, pad, pathEnd)) {
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WCHAR * p = pathEnd;
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if (n != 0) {
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*p++ = L';';
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}
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for (DWORD i = 0; i <= n; ++i) {
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*p++ = env[i];
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}
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if (!SetEnvironmentVariableW(L"PATH", pad)) {
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fail();
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}
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}
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}
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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