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gecko-dev/xpcom/io/nsAppFileLocationProvider.cpp

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** 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 Communicator client code, released
* March 31, 1998.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 2000
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Conrad Carlen <conrad@ingress.com>
*
* 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 "nsAppFileLocationProvider.h"
#include "nsAppDirectoryServiceDefs.h"
#include "nsDirectoryServiceDefs.h"
#include "nsIAtom.h"
#include "nsILocalFile.h"
#include "nsString.h"
#include "nsXPIDLString.h"
#include "nsISimpleEnumerator.h"
#include "prenv.h"
#include "nsCRT.h"
#if defined(XP_MACOSX)
#include <Carbon/Carbon.h>
#include "nsILocalFileMac.h"
#elif defined(XP_OS2)
#define INCL_DOSPROCESS
#define INCL_DOSMODULEMGR
#include <os2.h>
#elif defined(XP_WIN)
#include <windows.h>
#include <shlobj.h>
#elif defined(XP_UNIX)
#include <unistd.h>
#include <stdlib.h>
#include <sys/param.h>
#elif defined(XP_BEOS)
#include <sys/param.h>
#include <kernel/image.h>
#include <storage/FindDirectory.h>
#endif
// WARNING: These hard coded names need to go away. They need to
// come from localizable resources
#if defined(XP_MACOSX)
#define APP_REGISTRY_NAME NS_LITERAL_CSTRING("Application Registry")
#define ESSENTIAL_FILES NS_LITERAL_CSTRING("Essential Files")
#elif defined(XP_WIN) || defined(XP_OS2)
#define APP_REGISTRY_NAME NS_LITERAL_CSTRING("registry.dat")
#else
#define APP_REGISTRY_NAME NS_LITERAL_CSTRING("appreg")
#endif
// define default product directory
#define DEFAULT_PRODUCT_DIR NS_LITERAL_CSTRING(MOZ_USER_DIR)
// Locally defined keys used by nsAppDirectoryEnumerator
#define NS_ENV_PLUGINS_DIR "EnvPlugins" // env var MOZ_PLUGIN_PATH
#define NS_USER_PLUGINS_DIR "UserPlugins"
#ifdef XP_MACOSX
#define NS_MACOSX_USER_PLUGIN_DIR "OSXUserPlugins"
#define NS_MACOSX_LOCAL_PLUGIN_DIR "OSXLocalPlugins"
#define NS_MACOSX_JAVA2_PLUGIN_DIR "OSXJavaPlugins"
#elif XP_UNIX
#define NS_SYSTEM_PLUGINS_DIR "SysPlugins"
#endif
#define DEFAULTS_DIR_NAME NS_LITERAL_CSTRING("defaults")
#define DEFAULTS_PREF_DIR_NAME NS_LITERAL_CSTRING("pref")
#define DEFAULTS_PROFILE_DIR_NAME NS_LITERAL_CSTRING("profile")
#define RES_DIR_NAME NS_LITERAL_CSTRING("res")
#define CHROME_DIR_NAME NS_LITERAL_CSTRING("chrome")
#define PLUGINS_DIR_NAME NS_LITERAL_CSTRING("plugins")
#define SEARCH_DIR_NAME NS_LITERAL_CSTRING("searchplugins")
//*****************************************************************************
// nsAppFileLocationProvider::Constructor/Destructor
//*****************************************************************************
nsAppFileLocationProvider::nsAppFileLocationProvider()
{
}
//*****************************************************************************
// nsAppFileLocationProvider::nsISupports
//*****************************************************************************
NS_IMPL_THREADSAFE_ISUPPORTS2(nsAppFileLocationProvider, nsIDirectoryServiceProvider, nsIDirectoryServiceProvider2)
//*****************************************************************************
// nsAppFileLocationProvider::nsIDirectoryServiceProvider
//*****************************************************************************
NS_IMETHODIMP
nsAppFileLocationProvider::GetFile(const char *prop, PRBool *persistent, nsIFile **_retval)
{
nsCOMPtr<nsILocalFile> localFile;
nsresult rv = NS_ERROR_FAILURE;
NS_ENSURE_ARG(prop);
*_retval = nsnull;
*persistent = PR_TRUE;
#ifdef XP_MACOSX
FSRef fileRef;
nsCOMPtr<nsILocalFileMac> macFile;
#endif
if (nsCRT::strcmp(prop, NS_APP_APPLICATION_REGISTRY_DIR) == 0)
{
rv = GetProductDirectory(getter_AddRefs(localFile));
}
else if (nsCRT::strcmp(prop, NS_APP_APPLICATION_REGISTRY_FILE) == 0)
{
rv = GetProductDirectory(getter_AddRefs(localFile));
if (NS_SUCCEEDED(rv))
rv = localFile->AppendNative(APP_REGISTRY_NAME);
}
else if (nsCRT::strcmp(prop, NS_APP_DEFAULTS_50_DIR) == 0)
{
rv = CloneMozBinDirectory(getter_AddRefs(localFile));
if (NS_SUCCEEDED(rv))
rv = localFile->AppendRelativeNativePath(DEFAULTS_DIR_NAME);
}
else if (nsCRT::strcmp(prop, NS_APP_PREF_DEFAULTS_50_DIR) == 0)
{
rv = CloneMozBinDirectory(getter_AddRefs(localFile));
if (NS_SUCCEEDED(rv)) {
rv = localFile->AppendRelativeNativePath(DEFAULTS_DIR_NAME);
if (NS_SUCCEEDED(rv))
rv = localFile->AppendRelativeNativePath(DEFAULTS_PREF_DIR_NAME);
}
}
else if (nsCRT::strcmp(prop, NS_APP_PROFILE_DEFAULTS_50_DIR) == 0 ||
nsCRT::strcmp(prop, NS_APP_PROFILE_DEFAULTS_NLOC_50_DIR) == 0)
{
rv = CloneMozBinDirectory(getter_AddRefs(localFile));
if (NS_SUCCEEDED(rv)) {
rv = localFile->AppendRelativeNativePath(DEFAULTS_DIR_NAME);
if (NS_SUCCEEDED(rv))
rv = localFile->AppendRelativeNativePath(DEFAULTS_PROFILE_DIR_NAME);
}
}
else if (nsCRT::strcmp(prop, NS_APP_USER_PROFILES_ROOT_DIR) == 0)
{
rv = GetDefaultUserProfileRoot(getter_AddRefs(localFile));
}
else if (nsCRT::strcmp(prop, NS_APP_USER_PROFILES_LOCAL_ROOT_DIR) == 0)
{
rv = GetDefaultUserProfileRoot(getter_AddRefs(localFile), PR_TRUE);
}
else if (nsCRT::strcmp(prop, NS_APP_RES_DIR) == 0)
{
rv = CloneMozBinDirectory(getter_AddRefs(localFile));
if (NS_SUCCEEDED(rv))
rv = localFile->AppendRelativeNativePath(RES_DIR_NAME);
}
else if (nsCRT::strcmp(prop, NS_APP_CHROME_DIR) == 0)
{
rv = CloneMozBinDirectory(getter_AddRefs(localFile));
if (NS_SUCCEEDED(rv))
rv = localFile->AppendRelativeNativePath(CHROME_DIR_NAME);
}
else if (nsCRT::strcmp(prop, NS_APP_PLUGINS_DIR) == 0)
{
rv = CloneMozBinDirectory(getter_AddRefs(localFile));
if (NS_SUCCEEDED(rv))
rv = localFile->AppendRelativeNativePath(PLUGINS_DIR_NAME);
}
#ifdef XP_MACOSX
else if (nsCRT::strcmp(prop, NS_MACOSX_USER_PLUGIN_DIR) == 0)
{
if (::FSFindFolder(kUserDomain, kInternetPlugInFolderType, false, &fileRef) == noErr) {
rv = NS_NewLocalFileWithFSRef(&fileRef, PR_TRUE, getter_AddRefs(macFile));
if (NS_SUCCEEDED(rv))
localFile = macFile;
}
}
else if (nsCRT::strcmp(prop, NS_MACOSX_LOCAL_PLUGIN_DIR) == 0)
{
if (::FSFindFolder(kLocalDomain, kInternetPlugInFolderType, false, &fileRef) == noErr) {
rv = NS_NewLocalFileWithFSRef(&fileRef, PR_TRUE, getter_AddRefs(macFile));
if (NS_SUCCEEDED(rv))
localFile = macFile;
}
}
else if (nsCRT::strcmp(prop, NS_MACOSX_JAVA2_PLUGIN_DIR) == 0)
{
static const char *const java2PluginDirPath =
"/System/Library/Frameworks/JavaVM.framework/Versions/Current/Resources/";
NS_NewNativeLocalFile(nsDependentCString(java2PluginDirPath), PR_TRUE, getter_AddRefs(localFile));
}
#else
else if (nsCRT::strcmp(prop, NS_ENV_PLUGINS_DIR) == 0)
{
NS_ERROR("Don't use nsAppFileLocationProvider::GetFile(NS_ENV_PLUGINS_DIR, ...). "
"Use nsAppFileLocationProvider::GetFiles(...).");
const char *pathVar = PR_GetEnv("MOZ_PLUGIN_PATH");
if (pathVar && *pathVar)
rv = NS_NewNativeLocalFile(nsDependentCString(pathVar), PR_TRUE, getter_AddRefs(localFile));
}
else if (nsCRT::strcmp(prop, NS_USER_PLUGINS_DIR) == 0)
{
rv = GetProductDirectory(getter_AddRefs(localFile));
if (NS_SUCCEEDED(rv))
rv = localFile->AppendRelativeNativePath(PLUGINS_DIR_NAME);
}
#ifdef XP_UNIX
else if (nsCRT::strcmp(prop, NS_SYSTEM_PLUGINS_DIR) == 0) {
static const char *const sysLPlgDir =
#if defined(HAVE_USR_LIB64_DIR) && defined(__LP64__)
"/usr/lib64/mozilla/plugins";
#else
"/usr/lib/mozilla/plugins";
#endif
rv = NS_NewNativeLocalFile(nsDependentCString(sysLPlgDir),
PR_FALSE, getter_AddRefs(localFile));
}
#endif
#endif
else if (nsCRT::strcmp(prop, NS_APP_SEARCH_DIR) == 0)
{
rv = CloneMozBinDirectory(getter_AddRefs(localFile));
if (NS_SUCCEEDED(rv))
rv = localFile->AppendRelativeNativePath(SEARCH_DIR_NAME);
}
else if (nsCRT::strcmp(prop, NS_APP_USER_SEARCH_DIR) == 0)
{
rv = NS_GetSpecialDirectory(NS_APP_USER_PROFILE_50_DIR, _retval);
if (NS_SUCCEEDED(rv))
rv = (*_retval)->AppendNative(SEARCH_DIR_NAME);
}
else if (nsCRT::strcmp(prop, NS_APP_INSTALL_CLEANUP_DIR) == 0)
{
// This is cloned so that embeddors will have a hook to override
// with their own cleanup dir. See bugzilla bug #105087
rv = CloneMozBinDirectory(getter_AddRefs(localFile));
}
if (localFile && NS_SUCCEEDED(rv))
return localFile->QueryInterface(NS_GET_IID(nsIFile), (void**)_retval);
return rv;
}
NS_METHOD nsAppFileLocationProvider::CloneMozBinDirectory(nsILocalFile **aLocalFile)
{
NS_ENSURE_ARG_POINTER(aLocalFile);
nsresult rv;
if (!mMozBinDirectory)
{
// Get the mozilla bin directory
// 1. Check the directory service first for NS_XPCOM_CURRENT_PROCESS_DIR
// This will be set if a directory was passed to NS_InitXPCOM
// 2. If that doesn't work, set it to be the current process directory
nsCOMPtr<nsIProperties>
directoryService(do_GetService(NS_DIRECTORY_SERVICE_CONTRACTID, &rv));
if (NS_FAILED(rv))
return rv;
rv = directoryService->Get(NS_XPCOM_CURRENT_PROCESS_DIR, NS_GET_IID(nsIFile), getter_AddRefs(mMozBinDirectory));
if (NS_FAILED(rv)) {
rv = directoryService->Get(NS_OS_CURRENT_PROCESS_DIR, NS_GET_IID(nsIFile), getter_AddRefs(mMozBinDirectory));
if (NS_FAILED(rv))
return rv;
}
}
nsCOMPtr<nsIFile> aFile;
rv = mMozBinDirectory->Clone(getter_AddRefs(aFile));
if (NS_FAILED(rv))
return rv;
nsCOMPtr<nsILocalFile> lfile = do_QueryInterface (aFile);
if (!lfile)
return NS_ERROR_FAILURE;
NS_IF_ADDREF(*aLocalFile = lfile);
return NS_OK;
}
//----------------------------------------------------------------------------------------
// GetProductDirectory - Gets the directory which contains the application data folder
//
// UNIX : ~/.mozilla/
// WIN : <Application Data folder on user's machine>\Mozilla
// Mac : :Documents:Mozilla:
//----------------------------------------------------------------------------------------
NS_METHOD nsAppFileLocationProvider::GetProductDirectory(nsILocalFile **aLocalFile, PRBool aLocal)
{
NS_ENSURE_ARG_POINTER(aLocalFile);
nsresult rv;
PRBool exists;
nsCOMPtr<nsILocalFile> localDir;
#if defined(XP_MACOSX)
FSRef fsRef;
OSType folderType = aLocal ? kCachedDataFolderType : kDomainLibraryFolderType;
OSErr err = ::FSFindFolder(kUserDomain, folderType, kCreateFolder, &fsRef);
if (err) return NS_ERROR_FAILURE;
NS_NewLocalFile(EmptyString(), PR_TRUE, getter_AddRefs(localDir));
if (!localDir) return NS_ERROR_FAILURE;
nsCOMPtr<nsILocalFileMac> localDirMac(do_QueryInterface(localDir));
rv = localDirMac->InitWithFSRef(&fsRef);
if (NS_FAILED(rv)) return rv;
#elif defined(XP_OS2)
nsCOMPtr<nsIProperties> directoryService =
do_GetService(NS_DIRECTORY_SERVICE_CONTRACTID, &rv);
if (NS_FAILED(rv)) return rv;
rv = directoryService->Get(NS_OS2_HOME_DIR, NS_GET_IID(nsILocalFile), getter_AddRefs(localDir));
if (NS_FAILED(rv)) return rv;
#elif defined(XP_WIN)
nsCOMPtr<nsIProperties> directoryService =
do_GetService(NS_DIRECTORY_SERVICE_CONTRACTID, &rv);
if (NS_FAILED(rv)) return rv;
const char* prop = aLocal ? NS_WIN_LOCAL_APPDATA_DIR : NS_WIN_APPDATA_DIR;
rv = directoryService->Get(prop, NS_GET_IID(nsILocalFile), getter_AddRefs(localDir));
if (NS_SUCCEEDED(rv))
rv = localDir->Exists(&exists);
if (NS_FAILED(rv) || !exists)
{
// On some Win95 machines, NS_WIN_APPDATA_DIR does not exist - revert to NS_WIN_WINDOWS_DIR
localDir = nsnull;
rv = directoryService->Get(NS_WIN_WINDOWS_DIR, NS_GET_IID(nsILocalFile), getter_AddRefs(localDir));
}
if (NS_FAILED(rv)) return rv;
#elif defined(XP_UNIX)
rv = NS_NewNativeLocalFile(nsDependentCString(PR_GetEnv("HOME")), PR_TRUE, getter_AddRefs(localDir));
if (NS_FAILED(rv)) return rv;
#elif defined(XP_BEOS)
char path[MAXPATHLEN];
find_directory(B_USER_SETTINGS_DIRECTORY, 0, 0, path, MAXPATHLEN);
// Need enough space to add the trailing backslash
int len = strlen(path);
if (len > MAXPATHLEN-2)
return NS_ERROR_FAILURE;
path[len] = '/';
path[len+1] = '\0';
rv = NS_NewNativeLocalFile(nsDependentCString(path), PR_TRUE, getter_AddRefs(localDir));
if (NS_FAILED(rv)) return rv;
#else
#error dont_know_how_to_get_product_dir_on_your_platform
#endif
rv = localDir->AppendRelativeNativePath(DEFAULT_PRODUCT_DIR);
if (NS_FAILED(rv)) return rv;
rv = localDir->Exists(&exists);
if (NS_SUCCEEDED(rv) && !exists)
rv = localDir->Create(nsIFile::DIRECTORY_TYPE, 0700);
if (NS_FAILED(rv)) return rv;
*aLocalFile = localDir;
NS_ADDREF(*aLocalFile);
return rv;
}
//----------------------------------------------------------------------------------------
// GetDefaultUserProfileRoot - Gets the directory which contains each user profile dir
//
// UNIX : ~/.mozilla/
// WIN : <Application Data folder on user's machine>\Mozilla\Profiles
// Mac : :Documents:Mozilla:Profiles:
//----------------------------------------------------------------------------------------
NS_METHOD nsAppFileLocationProvider::GetDefaultUserProfileRoot(nsILocalFile **aLocalFile, PRBool aLocal)
{
NS_ENSURE_ARG_POINTER(aLocalFile);
nsresult rv;
nsCOMPtr<nsILocalFile> localDir;
rv = GetProductDirectory(getter_AddRefs(localDir), aLocal);
if (NS_FAILED(rv)) return rv;
#if defined(XP_MACOSX) || defined(XP_OS2) || defined(XP_WIN)
// These 3 platforms share this part of the path - do them as one
rv = localDir->AppendRelativeNativePath(NS_LITERAL_CSTRING("Profiles"));
if (NS_FAILED(rv)) return rv;
PRBool exists;
rv = localDir->Exists(&exists);
if (NS_SUCCEEDED(rv) && !exists)
rv = localDir->Create(nsIFile::DIRECTORY_TYPE, 0775);
if (NS_FAILED(rv)) return rv;
#endif
*aLocalFile = localDir;
NS_ADDREF(*aLocalFile);
return rv;
}
//*****************************************************************************
// nsAppFileLocationProvider::nsIDirectoryServiceProvider2
//*****************************************************************************
class nsAppDirectoryEnumerator : public nsISimpleEnumerator
{
public:
NS_DECL_ISUPPORTS
/**
* aKeyList is a null-terminated list of properties which are provided by aProvider
* They do not need to be publicly defined keys.
*/
nsAppDirectoryEnumerator(nsIDirectoryServiceProvider *aProvider,
const char* aKeyList[]) :
mProvider(aProvider),
mCurrentKey(aKeyList)
{
}
NS_IMETHOD HasMoreElements(PRBool *result)
{
while (!mNext && *mCurrentKey)
{
PRBool dontCare;
nsCOMPtr<nsIFile> testFile;
(void)mProvider->GetFile(*mCurrentKey++, &dontCare, getter_AddRefs(testFile));
// Don't return a file which does not exist.
PRBool exists;
if (testFile && NS_SUCCEEDED(testFile->Exists(&exists)) && exists)
mNext = testFile;
}
*result = mNext != nsnull;
return NS_OK;
}
NS_IMETHOD GetNext(nsISupports **result)
{
NS_ENSURE_ARG_POINTER(result);
*result = nsnull;
PRBool hasMore;
HasMoreElements(&hasMore);
if (!hasMore)
return NS_ERROR_FAILURE;
*result = mNext;
NS_IF_ADDREF(*result);
mNext = nsnull;
return *result ? NS_OK : NS_ERROR_FAILURE;
}
// Virtual destructor since subclass nsPathsDirectoryEnumerator
// does not re-implement Release()
virtual ~nsAppDirectoryEnumerator()
{
}
protected:
nsIDirectoryServiceProvider *mProvider;
const char** mCurrentKey;
nsCOMPtr<nsIFile> mNext;
};
NS_IMPL_ISUPPORTS1(nsAppDirectoryEnumerator, nsISimpleEnumerator)
/* nsPathsDirectoryEnumerator and PATH_SEPARATOR
* are not used on MacOS/X. */
#if defined(XP_WIN) || defined(XP_OS2) /* Win32 and OS/2 */
#define PATH_SEPARATOR ';'
#else /*if defined(XP_UNIX) || defined(XP_BEOS)*/
#define PATH_SEPARATOR ':'
#endif
class nsPathsDirectoryEnumerator : public nsAppDirectoryEnumerator
{
public:
/**
* aKeyList is a null-terminated list.
* The first element is a path list.
* The remainder are properties provided by aProvider.
* They do not need to be publicly defined keys.
*/
nsPathsDirectoryEnumerator(nsIDirectoryServiceProvider *aProvider,
const char* aKeyList[]) :
nsAppDirectoryEnumerator(aProvider, aKeyList+1),
mEndPath(aKeyList[0])
{
}
NS_IMETHOD HasMoreElements(PRBool *result)
{
if (mEndPath)
while (!mNext && *mEndPath)
{
const char *pathVar = mEndPath;
// skip PATH_SEPARATORs at the begining of the mEndPath
while (*pathVar == PATH_SEPARATOR) pathVar++;
do { ++mEndPath; } while (*mEndPath && *mEndPath != PATH_SEPARATOR);
nsCOMPtr<nsILocalFile> localFile;
NS_NewNativeLocalFile(Substring(pathVar, mEndPath),
PR_TRUE,
getter_AddRefs(localFile));
if (*mEndPath == PATH_SEPARATOR)
++mEndPath;
// Don't return a "file" (directory) which does not exist.
PRBool exists;
if (localFile &&
NS_SUCCEEDED(localFile->Exists(&exists)) &&
exists)
mNext = localFile;
}
if (mNext)
*result = PR_TRUE;
else
nsAppDirectoryEnumerator::HasMoreElements(result);
return NS_OK;
}
protected:
const char *mEndPath;
};
NS_IMETHODIMP
nsAppFileLocationProvider::GetFiles(const char *prop, nsISimpleEnumerator **_retval)
{
NS_ENSURE_ARG_POINTER(_retval);
*_retval = nsnull;
nsresult rv = NS_ERROR_FAILURE;
if (!nsCRT::strcmp(prop, NS_APP_PLUGINS_DIR_LIST))
{
#ifdef XP_MACOSX
// We are temporarily looking for JavaPlugin2 in the Java framework because Apple did not want
// to enable it for Safari by including it in the normal search directories. This situation
// should be resolved soon and then we should stop looking for JavaPlugin2 explicitly.
static const char* keys[] = { NS_APP_PLUGINS_DIR, NS_MACOSX_USER_PLUGIN_DIR,
NS_MACOSX_LOCAL_PLUGIN_DIR, NS_MACOSX_JAVA2_PLUGIN_DIR, nsnull };
*_retval = new nsAppDirectoryEnumerator(this, keys);
#else
#ifdef XP_UNIX
static const char* keys[] = { nsnull, NS_USER_PLUGINS_DIR, NS_APP_PLUGINS_DIR, NS_SYSTEM_PLUGINS_DIR, nsnull };
#else
static const char* keys[] = { nsnull, NS_USER_PLUGINS_DIR, NS_APP_PLUGINS_DIR, nsnull };
#endif
if (!keys[0] && !(keys[0] = PR_GetEnv("MOZ_PLUGIN_PATH"))) {
static const char nullstr = 0;
keys[0] = &nullstr;
}
*_retval = new nsPathsDirectoryEnumerator(this, keys);
#endif
NS_IF_ADDREF(*_retval);
rv = *_retval ? NS_OK : NS_ERROR_OUT_OF_MEMORY;
}
if (!nsCRT::strcmp(prop, NS_APP_SEARCH_DIR_LIST))
{
static const char* keys[] = { nsnull, NS_APP_SEARCH_DIR, NS_APP_USER_SEARCH_DIR, nsnull };
if (!keys[0] && !(keys[0] = PR_GetEnv("MOZ_SEARCH_ENGINE_PATH"))) {
static const char nullstr = 0;
keys[0] = &nullstr;
}
*_retval = new nsPathsDirectoryEnumerator(this, keys);
NS_IF_ADDREF(*_retval);
rv = *_retval ? NS_OK : NS_ERROR_OUT_OF_MEMORY;
}
return rv;
}
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