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gecko-dev/xpcom/glue/standalone/nsXPCOMGlue.cpp

564 строки
16 KiB
C++
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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* vim:set ts=4 sw=4 et cindent: */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (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.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "nsXPCOMGlue.h"
#include "nspr.h"
#include "nsDebug.h"
#include "nsIServiceManager.h"
#include "nsGREDirServiceProvider.h"
#include "nsXPCOMPrivate.h"
#include "nsCOMPtr.h"
#include <stdlib.h>
#if XP_WIN32
#include <windows.h>
#include <mbstring.h>
#endif
void GRE_AddGREToEnvironment();
// functions provided by nsDebug.cpp
nsresult GlueStartupDebug();
void GlueShutdownDebug();
static PRLibrary *xpcomLib;
static XPCOMFunctions xpcomFunctions;
extern "C"
nsresult XPCOMGlueStartup(const char* xpcomFile)
{
#ifdef XPCOM_GLUE_NO_DYNAMIC_LOADING
return NS_OK;
#else
nsresult rv = NS_OK;
GetFrozenFunctionsFunc function = nsnull;
xpcomFunctions.version = XPCOM_GLUE_VERSION;
xpcomFunctions.size = sizeof(XPCOMFunctions);
//
// if xpcomFile == ".", then we assume xpcom is already loaded, and we'll
// use NSPR to find NS_GetFrozenFunctions from the list of already loaded
// libraries.
//
// otherwise, we try to load xpcom and then look for NS_GetFrozenFunctions.
// if xpcomFile == NULL, then we try to load xpcom by name w/o a fully
// qualified path.
//
if (xpcomFile && (xpcomFile[0] == '.' && xpcomFile[1] == '\0')) {
function = (GetFrozenFunctionsFunc)
PR_FindSymbolAndLibrary("NS_GetFrozenFunctions", &xpcomLib);
if (!function) {
// The symbol was not found, so failover to loading XPCOM_DLL,
// and look for the symbol there. See bug 240986 for details.
xpcomFile = nsnull;
}
else {
char *libPath = PR_GetLibraryFilePathname(XPCOM_DLL, (PRFuncPtr) function);
if (!libPath)
rv = NS_ERROR_FAILURE;
else {
rv = (*function)(&xpcomFunctions, libPath);
PR_Free(libPath);
}
}
}
if (!function) {
PRLibSpec libSpec;
libSpec.type = PR_LibSpec_Pathname;
if (!xpcomFile)
libSpec.value.pathname = XPCOM_DLL;
else {
libSpec.value.pathname = xpcomFile;
#ifdef XP_WIN32
// Add directory containing xpcomFile to the DLL search path. This
// is done so that the OS knows where to find xpcom_core.dll and
// any other dependent libs.
const char *lastSlash =
(const char *) _mbsrchr((const unsigned char *) xpcomFile, '\\');
if (lastSlash) {
char path[32767];
DWORD pathLen = GetEnvironmentVariable("PATH", path, sizeof(path));
if (pathLen != 0)
path[pathLen++] = ';';
DWORD dirLen = lastSlash - xpcomFile;
if (sizeof(path) - pathLen > dirLen) {
memcpy(&path[pathLen], xpcomFile, dirLen);
path[pathLen + dirLen] = '\0';
SetEnvironmentVariable("PATH", path);
}
}
#endif
}
xpcomLib = PR_LoadLibraryWithFlags(libSpec, PR_LD_LAZY|PR_LD_GLOBAL);
if (!xpcomLib)
return NS_ERROR_FAILURE;
function = (GetFrozenFunctionsFunc) PR_FindSymbol(xpcomLib, "NS_GetFrozenFunctions");
if (!function)
rv = NS_ERROR_FAILURE;
else
rv = (*function)(&xpcomFunctions, libSpec.value.pathname);
}
if (NS_FAILED(rv))
goto bail;
rv = GlueStartupDebug();
if (NS_FAILED(rv))
goto bail;
GRE_AddGREToEnvironment();
return NS_OK;
bail:
PR_UnloadLibrary(xpcomLib);
xpcomLib = nsnull;
memset(&xpcomFunctions, 0, sizeof(xpcomFunctions));
return NS_ERROR_FAILURE;
#endif
}
extern "C"
nsresult XPCOMGlueShutdown()
{
#ifdef XPCOM_GLUE_NO_DYNAMIC_LOADING
return NS_OK;
#else
GlueShutdownDebug();
if (xpcomLib) {
PR_UnloadLibrary(xpcomLib);
xpcomLib = nsnull;
}
memset(&xpcomFunctions, 0, sizeof(xpcomFunctions));
return NS_OK;
#endif
}
#ifndef XPCOM_GLUE_NO_DYNAMIC_LOADING
extern "C" NS_COM nsresult
NS_InitXPCOM2(nsIServiceManager* *result,
nsIFile* binDirectory,
nsIDirectoryServiceProvider* appFileLocationProvider)
{
if (!xpcomFunctions.init)
return NS_ERROR_NOT_INITIALIZED;
return xpcomFunctions.init(result, binDirectory, appFileLocationProvider);
}
extern "C" NS_COM nsresult
NS_ShutdownXPCOM(nsIServiceManager* servMgr)
{
if (!xpcomFunctions.shutdown)
return NS_ERROR_NOT_INITIALIZED;
return xpcomFunctions.shutdown(servMgr);
}
extern "C" NS_COM nsresult
NS_GetServiceManager(nsIServiceManager* *result)
{
if (!xpcomFunctions.getServiceManager)
return NS_ERROR_NOT_INITIALIZED;
return xpcomFunctions.getServiceManager(result);
}
extern "C" NS_COM nsresult
NS_GetComponentManager(nsIComponentManager* *result)
{
if (!xpcomFunctions.getComponentManager)
return NS_ERROR_NOT_INITIALIZED;
return xpcomFunctions.getComponentManager(result);
}
extern "C" NS_COM nsresult
NS_GetComponentRegistrar(nsIComponentRegistrar* *result)
{
if (!xpcomFunctions.getComponentRegistrar)
return NS_ERROR_NOT_INITIALIZED;
return xpcomFunctions.getComponentRegistrar(result);
}
extern "C" NS_COM nsresult
NS_GetMemoryManager(nsIMemory* *result)
{
if (!xpcomFunctions.getMemoryManager)
return NS_ERROR_NOT_INITIALIZED;
return xpcomFunctions.getMemoryManager(result);
}
extern "C" NS_COM nsresult
NS_NewLocalFile(const nsAString &path, PRBool followLinks, nsILocalFile* *result)
{
if (!xpcomFunctions.newLocalFile)
return NS_ERROR_NOT_INITIALIZED;
return xpcomFunctions.newLocalFile(path, followLinks, result);
}
extern "C" NS_COM nsresult
NS_NewNativeLocalFile(const nsACString &path, PRBool followLinks, nsILocalFile* *result)
{
if (!xpcomFunctions.newNativeLocalFile)
return NS_ERROR_NOT_INITIALIZED;
return xpcomFunctions.newNativeLocalFile(path, followLinks, result);
}
extern "C" NS_COM nsresult
NS_RegisterXPCOMExitRoutine(XPCOMExitRoutine exitRoutine, PRUint32 priority)
{
if (!xpcomFunctions.registerExitRoutine)
return NS_ERROR_NOT_INITIALIZED;
return xpcomFunctions.registerExitRoutine(exitRoutine, priority);
}
extern "C" NS_COM nsresult
NS_UnregisterXPCOMExitRoutine(XPCOMExitRoutine exitRoutine)
{
if (!xpcomFunctions.unregisterExitRoutine)
return NS_ERROR_NOT_INITIALIZED;
return xpcomFunctions.unregisterExitRoutine(exitRoutine);
}
extern "C" NS_COM nsresult
NS_GetDebug(nsIDebug* *result)
{
if (!xpcomFunctions.getDebug)
return NS_ERROR_NOT_INITIALIZED;
return xpcomFunctions.getDebug(result);
}
extern "C" NS_COM nsresult
NS_GetTraceRefcnt(nsITraceRefcnt* *result)
{
if (!xpcomFunctions.getTraceRefcnt)
return NS_ERROR_NOT_INITIALIZED;
return xpcomFunctions.getTraceRefcnt(result);
}
extern "C" NS_COM nsresult
NS_StringContainerInit(nsStringContainer &aStr)
{
if (!xpcomFunctions.stringContainerInit)
return NS_ERROR_NOT_INITIALIZED;
return xpcomFunctions.stringContainerInit(aStr);
}
extern "C" NS_COM nsresult
NS_StringContainerInit2(nsStringContainer &aStr,
const PRUnichar *aData,
PRUint32 aDataLength,
PRUint32 aFlags)
{
if (!xpcomFunctions.stringContainerInit2)
return NS_ERROR_NOT_INITIALIZED;
return xpcomFunctions.stringContainerInit2(aStr, aData, aDataLength, aFlags);
}
extern "C" NS_COM void
NS_StringContainerFinish(nsStringContainer &aStr)
{
if (xpcomFunctions.stringContainerFinish)
xpcomFunctions.stringContainerFinish(aStr);
}
extern "C" NS_COM PRUint32
NS_StringGetData(const nsAString &aStr, const PRUnichar **aBuf, PRBool *aTerm)
{
if (!xpcomFunctions.stringGetData) {
*aBuf = nsnull;
return 0;
}
return xpcomFunctions.stringGetData(aStr, aBuf, aTerm);
}
extern "C" NS_COM PRUnichar *
NS_StringCloneData(const nsAString &aStr)
{
if (!xpcomFunctions.stringCloneData)
return nsnull;
return xpcomFunctions.stringCloneData(aStr);
}
extern "C" NS_COM nsresult
NS_StringSetData(nsAString &aStr, const PRUnichar *aBuf, PRUint32 aCount)
{
if (!xpcomFunctions.stringSetData)
return NS_ERROR_NOT_INITIALIZED;
return xpcomFunctions.stringSetData(aStr, aBuf, aCount);
}
extern "C" NS_COM nsresult
NS_StringSetDataRange(nsAString &aStr, PRUint32 aCutStart, PRUint32 aCutLength,
const PRUnichar *aBuf, PRUint32 aCount)
{
if (!xpcomFunctions.stringSetDataRange)
return NS_ERROR_NOT_INITIALIZED;
return xpcomFunctions.stringSetDataRange(aStr, aCutStart, aCutLength, aBuf, aCount);
}
extern "C" NS_COM nsresult
NS_StringCopy(nsAString &aDest, const nsAString &aSrc)
{
if (!xpcomFunctions.stringCopy)
return NS_ERROR_NOT_INITIALIZED;
return xpcomFunctions.stringCopy(aDest, aSrc);
}
extern "C" NS_COM nsresult
NS_CStringContainerInit(nsCStringContainer &aStr)
{
if (!xpcomFunctions.cstringContainerInit)
return NS_ERROR_NOT_INITIALIZED;
return xpcomFunctions.cstringContainerInit(aStr);
}
extern "C" NS_COM nsresult
NS_CStringContainerInit2(nsCStringContainer &aStr,
const char *aData,
PRUint32 aDataLength,
PRUint32 aFlags)
{
if (!xpcomFunctions.cstringContainerInit2)
return NS_ERROR_NOT_INITIALIZED;
return xpcomFunctions.cstringContainerInit2(aStr, aData, aDataLength, aFlags);
}
extern "C" NS_COM void
NS_CStringContainerFinish(nsCStringContainer &aStr)
{
if (xpcomFunctions.cstringContainerFinish)
xpcomFunctions.cstringContainerFinish(aStr);
}
extern "C" NS_COM PRUint32
NS_CStringGetData(const nsACString &aStr, const char **aBuf, PRBool *aTerm)
{
if (!xpcomFunctions.cstringGetData) {
*aBuf = nsnull;
return 0;
}
return xpcomFunctions.cstringGetData(aStr, aBuf, aTerm);
}
extern "C" NS_COM char *
NS_CStringCloneData(const nsACString &aStr)
{
if (!xpcomFunctions.cstringCloneData)
return nsnull;
return xpcomFunctions.cstringCloneData(aStr);
}
extern "C" NS_COM nsresult
NS_CStringSetData(nsACString &aStr, const char *aBuf, PRUint32 aCount)
{
if (!xpcomFunctions.cstringSetData)
return NS_ERROR_NOT_INITIALIZED;
return xpcomFunctions.cstringSetData(aStr, aBuf, aCount);
}
extern "C" NS_COM nsresult
NS_CStringSetDataRange(nsACString &aStr, PRUint32 aCutStart, PRUint32 aCutLength,
const char *aBuf, PRUint32 aCount)
{
if (!xpcomFunctions.cstringSetDataRange)
return NS_ERROR_NOT_INITIALIZED;
return xpcomFunctions.cstringSetDataRange(aStr, aCutStart, aCutLength, aBuf, aCount);
}
extern "C" NS_COM nsresult
NS_CStringCopy(nsACString &aDest, const nsACString &aSrc)
{
if (!xpcomFunctions.cstringCopy)
return NS_ERROR_NOT_INITIALIZED;
return xpcomFunctions.cstringCopy(aDest, aSrc);
}
extern "C" NS_COM nsresult
NS_CStringToUTF16(const nsACString &aSrc, nsCStringEncoding aSrcEncoding, nsAString &aDest)
{
if (!xpcomFunctions.cstringToUTF16)
return NS_ERROR_NOT_INITIALIZED;
return xpcomFunctions.cstringToUTF16(aSrc, aSrcEncoding, aDest);
}
extern "C" NS_COM nsresult
NS_UTF16ToCString(const nsAString &aSrc, nsCStringEncoding aDestEncoding, nsACString &aDest)
{
if (!xpcomFunctions.utf16ToCString)
return NS_ERROR_NOT_INITIALIZED;
return xpcomFunctions.utf16ToCString(aSrc, aDestEncoding, aDest);
}
extern "C" NS_COM void*
NS_Alloc(PRSize size)
{
if (!xpcomFunctions.allocFunc)
return nsnull;
return xpcomFunctions.allocFunc(size);
}
extern "C" NS_COM void*
NS_Realloc(void* ptr, PRSize size)
{
if (!xpcomFunctions.reallocFunc)
return nsnull;
return xpcomFunctions.reallocFunc(ptr, size);
}
extern "C" NS_COM void
NS_Free(void* ptr)
{
if (xpcomFunctions.freeFunc)
xpcomFunctions.freeFunc(ptr);
}
#endif // #ifndef XPCOM_GLUE_NO_DYNAMIC_LOADING
static char sEnvString[MAXPATHLEN*10];
static char* spEnvString = 0;
void
GRE_AddGREToEnvironment()
{
#ifdef WINCE
return;
#else
const char* grePath = GRE_GetGREPath();
if (!grePath)
return;
const char* path = PR_GetEnv(XPCOM_SEARCH_KEY);
if (!path) {
path = "";
}
if (spEnvString) PR_smprintf_free(spEnvString);
/**
* if the PATH string is longer than our static buffer, allocate a
* buffer for the environment string. This buffer will be leaked at shutdown!
*/
if (strlen(grePath) + strlen(path) +
sizeof(XPCOM_SEARCH_KEY) + sizeof(XPCOM_ENV_PATH_SEPARATOR) > MAXPATHLEN*10) {
if (PR_smprintf(XPCOM_SEARCH_KEY "=%s" XPCOM_ENV_PATH_SEPARATOR "%s",
grePath,
path)) {
PR_SetEnv(spEnvString);
}
} else {
if (sprintf(sEnvString,
XPCOM_SEARCH_KEY "=%s" XPCOM_ENV_PATH_SEPARATOR "%s",
grePath,
path) > 0) {
PR_SetEnv(sEnvString);
}
}
#ifdef XP_WIN32
// On windows, the current directory is searched before the
// PATH environment variable. This is a very bad thing
// since libraries in the cwd will be picked up before
// any that are in either the application or GRE directory.
if (grePath) {
SetCurrentDirectory(grePath);
}
#endif // XP_WIN32
#endif // WINCE
}
// Default GRE startup/shutdown code
extern "C"
nsresult GRE_Startup()
{
const char* xpcomLocation = GRE_GetXPCOMPath();
// Startup the XPCOM Glue that links us up with XPCOM.
nsresult rv = XPCOMGlueStartup(xpcomLocation);
if (NS_FAILED(rv)) {
NS_WARNING("gre: XPCOMGlueStartup failed");
return rv;
}
nsGREDirServiceProvider *provider = new nsGREDirServiceProvider();
if ( !provider ) {
NS_WARNING("GRE_Startup failed");
XPCOMGlueShutdown();
return NS_ERROR_OUT_OF_MEMORY;
}
nsCOMPtr<nsIServiceManager> servMan;
NS_ADDREF( provider );
rv = NS_InitXPCOM2(getter_AddRefs(servMan), nsnull, provider);
NS_RELEASE(provider);
if ( NS_FAILED(rv) || !servMan) {
NS_WARNING("gre: NS_InitXPCOM failed");
XPCOMGlueShutdown();
return rv;
}
return NS_OK;
}
extern "C"
nsresult GRE_Shutdown()
{
NS_ShutdownXPCOM(nsnull);
XPCOMGlueShutdown();
return NS_OK;
}
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