mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
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286 lines
8.2 KiB
C++
286 lines
8.2 KiB
C++
/* -*- Mode: C++; tab-width: 6; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla XPCOM.
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*
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* The Initial Developer of the Original Code is
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* Benjamin Smedberg <benjamin@smedbergs.us>
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*
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* Portions created by the Initial Developer are Copyright (C) 2005
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsGlueLinking.h"
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#include "nsXPCOMGlue.h"
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#include "nsStringAPI.h"
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#include <windows.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <tchar.h>
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#define MOZ_LOADLIBRARY_FLAGS LOAD_WITH_ALTERED_SEARCH_PATH
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struct DependentLib
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{
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HINSTANCE libHandle;
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DependentLib *next;
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};
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static DependentLib *sTop;
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HINSTANCE sXULLibrary;
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static void
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AppendDependentLib(HINSTANCE libHandle)
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{
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DependentLib *d = new DependentLib;
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if (!d)
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return;
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d->next = sTop;
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d->libHandle = libHandle;
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sTop = d;
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}
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static void
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preload(LPCWSTR dll)
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{
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HANDLE fd = CreateFileW(dll, GENERIC_READ, FILE_SHARE_READ,
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NULL, OPEN_EXISTING, FILE_FLAG_SEQUENTIAL_SCAN, NULL);
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char buf[64 * 1024];
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if (fd == INVALID_HANDLE_VALUE)
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return;
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DWORD dwBytesRead;
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// Do dummy reads to trigger kernel-side readhead via FILE_FLAG_SEQUENTIAL_SCAN.
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// Abort when underfilling because during testing the buffers are read fully
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// A buffer that's not keeping up would imply that readahead isn't working right
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while (ReadFile(fd, buf, sizeof(buf), &dwBytesRead, NULL) && dwBytesRead == sizeof(buf))
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/* Nothing */;
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CloseHandle(fd);
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}
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static void
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ReadDependentCB(const char *aDependentLib, bool do_preload)
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{
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wchar_t wideDependentLib[MAX_PATH];
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MultiByteToWideChar(CP_UTF8, 0, aDependentLib, -1, wideDependentLib, MAX_PATH);
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if (do_preload)
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preload(wideDependentLib);
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HINSTANCE h =
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LoadLibraryExW(wideDependentLib, NULL, MOZ_LOADLIBRARY_FLAGS);
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if (!h)
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return;
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AppendDependentLib(h);
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}
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// like strpbrk but finds the *last* char, not the first
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static char*
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ns_strrpbrk(char *string, const char *strCharSet)
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{
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char *found = NULL;
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for (; *string; ++string) {
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for (const char *search = strCharSet; *search; ++search) {
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if (*search == *string) {
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found = string;
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// Since we're looking for the last char, we save "found"
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// until we're at the end of the string.
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}
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}
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}
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return found;
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}
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// like strpbrk but finds the *last* char, not the first
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static wchar_t*
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ns_wcspbrk(wchar_t *string, const wchar_t *strCharSet)
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{
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wchar_t *found = NULL;
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for (; *string; ++string) {
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for (const wchar_t *search = strCharSet; *search; ++search) {
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if (*search == *string) {
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found = string;
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// Since we're looking for the last char, we save "found"
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// until we're at the end of the string.
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}
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}
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}
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return found;
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}
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bool ns_isRelPath(wchar_t* path)
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{
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return !(path[1] == ':');
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}
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nsresult
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XPCOMGlueLoad(const char *aXpcomFile, GetFrozenFunctionsFunc *func)
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{
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wchar_t xpcomFile[MAXPATHLEN];
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MultiByteToWideChar(CP_UTF8, 0, aXpcomFile,-1,
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xpcomFile, MAXPATHLEN);
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if (xpcomFile[0] == '.' && xpcomFile[1] == '\0') {
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wcscpy(xpcomFile, LXPCOM_DLL);
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}
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else {
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wchar_t xpcomDir[MAXPATHLEN];
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if (ns_isRelPath(xpcomFile))
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{
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_wfullpath(xpcomDir, xpcomFile, sizeof(xpcomDir)/sizeof(wchar_t));
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}
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else
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{
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wcscpy(xpcomDir, xpcomFile);
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}
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wchar_t *lastSlash = ns_wcspbrk(xpcomDir, L"/\\");
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if (lastSlash) {
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*lastSlash = '\0';
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char xpcomDir_narrow[MAXPATHLEN];
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WideCharToMultiByte(CP_UTF8, 0, xpcomDir,-1,
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xpcomDir_narrow, MAX_PATH, NULL, NULL);
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XPCOMGlueLoadDependentLibs(xpcomDir_narrow, ReadDependentCB);
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_snwprintf(lastSlash, MAXPATHLEN - wcslen(xpcomDir), L"\\" LXUL_DLL);
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sXULLibrary =
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LoadLibraryExW(xpcomDir, NULL, MOZ_LOADLIBRARY_FLAGS);
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if (!sXULLibrary)
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{
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DWORD err = GetLastError();
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#ifdef DEBUG
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LPVOID lpMsgBuf;
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FormatMessage(
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FORMAT_MESSAGE_ALLOCATE_BUFFER |
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FORMAT_MESSAGE_FROM_SYSTEM |
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FORMAT_MESSAGE_IGNORE_INSERTS,
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NULL,
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GetLastError(),
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MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
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(LPTSTR) &lpMsgBuf,
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0,
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NULL
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);
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wprintf(L"Error loading %s: %s\n", xpcomDir, lpMsgBuf);
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LocalFree(lpMsgBuf);
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#endif //DEBUG
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return (err == ERROR_NOT_ENOUGH_MEMORY || err == ERROR_OUTOFMEMORY)
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? NS_ERROR_OUT_OF_MEMORY : NS_ERROR_FAILURE;
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}
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}
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}
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HINSTANCE h =
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LoadLibraryExW(xpcomFile, NULL, MOZ_LOADLIBRARY_FLAGS);
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if (!h)
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{
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DWORD err = GetLastError();
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#ifdef DEBUG
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LPVOID lpMsgBuf;
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FormatMessage(
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FORMAT_MESSAGE_ALLOCATE_BUFFER |
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FORMAT_MESSAGE_FROM_SYSTEM |
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FORMAT_MESSAGE_IGNORE_INSERTS,
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NULL,
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err,
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MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
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(LPTSTR) &lpMsgBuf,
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0,
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NULL
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);
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wprintf(L"Error loading %s: %s\n", xpcomFile, lpMsgBuf);
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LocalFree(lpMsgBuf);
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#endif
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return (err == ERROR_NOT_ENOUGH_MEMORY || err == ERROR_OUTOFMEMORY)
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? NS_ERROR_OUT_OF_MEMORY : NS_ERROR_FAILURE;
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}
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AppendDependentLib(h);
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GetFrozenFunctionsFunc sym =
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(GetFrozenFunctionsFunc) GetProcAddress(h, "NS_GetFrozenFunctions");
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if (!sym) { // No symbol found.
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XPCOMGlueUnload();
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return NS_ERROR_NOT_AVAILABLE;
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}
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*func = sym;
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return NS_OK;
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}
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void
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XPCOMGlueUnload()
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{
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while (sTop) {
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FreeLibrary(sTop->libHandle);
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DependentLib *temp = sTop;
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sTop = sTop->next;
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delete temp;
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}
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if (sXULLibrary) {
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FreeLibrary(sXULLibrary);
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sXULLibrary = nsnull;
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}
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}
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nsresult
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XPCOMGlueLoadXULFunctions(const nsDynamicFunctionLoad *symbols)
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{
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if (!sXULLibrary)
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return NS_ERROR_NOT_INITIALIZED;
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nsresult rv = NS_OK;
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while (symbols->functionName) {
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*symbols->function =
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(NSFuncPtr) GetProcAddress(sXULLibrary, symbols->functionName);
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if (!*symbols->function)
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rv = NS_ERROR_LOSS_OF_SIGNIFICANT_DATA;
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++symbols;
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}
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return rv;
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}
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