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nsXREDirProvider.cpp
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nsXREDirProvider.cpp
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "nsAppRunner.h"
#include "nsXREDirProvider.h"
#ifndef ANDROID
# include "commonupdatedir.h"
#endif
#include "jsapi.h"
#include "xpcpublic.h"
#include "nsIAppStartup.h"
#include "nsIFile.h"
#include "nsIObserver.h"
#include "nsIObserverService.h"
#include "nsISimpleEnumerator.h"
#include "nsIToolkitProfileService.h"
#include "nsIXULRuntime.h"
#include "commonupdatedir.h"
#include "nsAppDirectoryServiceDefs.h"
#include "nsDirectoryServiceDefs.h"
#include "nsDirectoryServiceUtils.h"
#include "nsXULAppAPI.h"
#include "nsCategoryManagerUtils.h"
#include "nsDependentString.h"
#include "nsCOMArray.h"
#include "nsArrayEnumerator.h"
#include "nsEnumeratorUtils.h"
#include "nsReadableUtils.h"
#include "SpecialSystemDirectory.h"
#include "mozilla/dom/ScriptSettings.h"
#include "mozilla/AutoRestore.h"
#include "mozilla/Components.h"
#include "mozilla/Services.h"
#include "mozilla/Omnijar.h"
#include "mozilla/Preferences.h"
#include "mozilla/Telemetry.h"
#include "nsPrintfCString.h"
#include <stdlib.h>
#ifdef XP_WIN
# include <windows.h>
# include <shlobj.h>
# include "WinUtils.h"
#endif
#ifdef XP_MACOSX
# include "nsILocalFileMac.h"
// for chflags()
# include <sys/stat.h>
# include <unistd.h>
#endif
#ifdef XP_UNIX
# include <ctype.h>
#endif
#ifdef XP_IOS
# include "UIKitDirProvider.h"
#endif
#if defined(MOZ_SANDBOX)
# include "mozilla/SandboxSettings.h"
# include "nsIUUIDGenerator.h"
# include "mozilla/Unused.h"
# if defined(XP_WIN)
# include "sandboxBroker.h"
# endif
#endif
#if defined(XP_MACOSX)
# define APP_REGISTRY_NAME "Application Registry"
#elif defined(XP_WIN)
# define APP_REGISTRY_NAME "registry.dat"
#else
# define APP_REGISTRY_NAME "appreg"
#endif
#define PREF_OVERRIDE_DIRNAME "preferences"
#if defined(MOZ_SANDBOX)
static already_AddRefed<nsIFile> GetProcessSandboxTempDir(
GeckoProcessType type);
static nsresult DeleteDirIfExists(nsIFile* dir);
static bool IsContentSandboxDisabled();
static const char* GetProcessTempBaseDirKey();
static already_AddRefed<nsIFile> CreateProcessSandboxTempDir(
GeckoProcessType procType);
#endif
nsXREDirProvider* gDirServiceProvider = nullptr;
nsIFile* gDataDirHomeLocal = nullptr;
nsIFile* gDataDirHome = nullptr;
nsCOMPtr<nsIFile> gDataDirProfileLocal = nullptr;
nsCOMPtr<nsIFile> gDataDirProfile = nullptr;
// These are required to allow nsXREDirProvider to be usable in xpcshell tests.
// where gAppData is null.
#if defined(XP_MACOSX) || defined(XP_WIN) || defined(XP_UNIX)
static const char* GetAppName() {
if (gAppData) {
return gAppData->name;
}
return nullptr;
}
#endif
static const char* GetAppVendor() {
if (gAppData) {
return gAppData->vendor;
}
return nullptr;
}
nsXREDirProvider::nsXREDirProvider() : mProfileNotified(false) {
gDirServiceProvider = this;
}
nsXREDirProvider::~nsXREDirProvider() {
gDirServiceProvider = nullptr;
gDataDirHomeLocal = nullptr;
gDataDirHome = nullptr;
}
already_AddRefed<nsXREDirProvider> nsXREDirProvider::GetSingleton() {
if (!gDirServiceProvider) {
new nsXREDirProvider(); // This sets gDirServiceProvider
}
return do_AddRef(gDirServiceProvider);
}
nsresult nsXREDirProvider::Initialize(
nsIFile* aXULAppDir, nsIFile* aGREDir,
nsIDirectoryServiceProvider* aAppProvider) {
NS_ENSURE_ARG(aXULAppDir);
NS_ENSURE_ARG(aGREDir);
mAppProvider = aAppProvider;
mXULAppDir = aXULAppDir;
mGREDir = aGREDir;
#if defined(XP_WIN) && defined(MOZ_SANDBOX)
// The GRE directory can be used in sandbox rules, so we need to make sure
// it doesn't contain any junction points or symlinks or the sandbox will
// reject those rules.
if (!mozilla::widget::WinUtils::ResolveJunctionPointsAndSymLinks(mGREDir)) {
NS_WARNING("Failed to resolve GRE Dir.");
}
// If the mXULAppDir is different it lives below the mGREDir. To avoid
// confusion resolve that as well even though we don't need it for sandbox
// rules. Some tests rely on this for example.
if (!mozilla::widget::WinUtils::ResolveJunctionPointsAndSymLinks(
mXULAppDir)) {
NS_WARNING("Failed to resolve XUL App Dir.");
}
#endif
mGREDir->Clone(getter_AddRefs(mGREBinDir));
#ifdef XP_MACOSX
mGREBinDir->SetNativeLeafName(NS_LITERAL_CSTRING("MacOS"));
#endif
if (!mProfileDir) {
nsCOMPtr<nsIDirectoryServiceProvider> app(mAppProvider);
if (app) {
bool per = false;
app->GetFile(NS_APP_USER_PROFILE_50_DIR, &per,
getter_AddRefs(mProfileDir));
NS_ASSERTION(per, "NS_APP_USER_PROFILE_50_DIR must be persistent!");
NS_ASSERTION(
mProfileDir,
"NS_APP_USER_PROFILE_50_DIR not defined! This shouldn't happen!");
}
}
return NS_OK;
}
nsresult nsXREDirProvider::SetProfile(nsIFile* aDir, nsIFile* aLocalDir) {
NS_ASSERTION(aDir && aLocalDir, "We don't support no-profile apps yet!");
nsresult rv;
rv = EnsureDirectoryExists(aDir);
if (NS_FAILED(rv)) return rv;
rv = EnsureDirectoryExists(aLocalDir);
if (NS_FAILED(rv)) return rv;
#ifdef XP_MACOSX
bool same;
if (NS_SUCCEEDED(aDir->Equals(aLocalDir, &same)) && !same) {
// Ensure that the cache directory is not indexed by Spotlight
// (bug 718910). At least on OS X, the cache directory (under
// ~/Library/Caches/) is always the "local" user profile
// directory. This is confusing, since *both* user profile
// directories are "local" (they both exist under the user's
// home directory). But this usage dates back at least as far
// as the patch for bug 291033, where "local" seems to mean
// "suitable for temporary storage". Don't hide the cache
// directory if by some chance it and the "non-local" profile
// directory are the same -- there are bad side effects from
// hiding a profile directory under /Library/Application Support/
// (see bug 801883).
nsAutoCString cacheDir;
if (NS_SUCCEEDED(aLocalDir->GetNativePath(cacheDir))) {
if (chflags(cacheDir.get(), UF_HIDDEN)) {
NS_WARNING("Failed to set Cache directory to HIDDEN.");
}
}
}
#endif
mProfileDir = aDir;
mProfileLocalDir = aLocalDir;
#if defined(XP_WIN) && defined(MOZ_SANDBOX)
// The profile directory can be used in sandbox rules, so we need to make sure
// it doesn't contain any junction points or symlinks or the sandbox will
// reject those rules.
if (!mozilla::widget::WinUtils::ResolveJunctionPointsAndSymLinks(
mProfileDir)) {
NS_WARNING("Failed to resolve Profile Dir.");
}
#endif
return NS_OK;
}
NS_IMPL_QUERY_INTERFACE(nsXREDirProvider, nsIDirectoryServiceProvider,
nsIDirectoryServiceProvider2, nsIXREDirProvider,
nsIProfileStartup)
NS_IMETHODIMP_(MozExternalRefCountType)
nsXREDirProvider::AddRef() { return 1; }
NS_IMETHODIMP_(MozExternalRefCountType)
nsXREDirProvider::Release() { return 0; }
nsresult nsXREDirProvider::GetUserProfilesRootDir(nsIFile** aResult) {
nsCOMPtr<nsIFile> file;
nsresult rv = GetUserDataDirectory(getter_AddRefs(file), false);
if (NS_SUCCEEDED(rv)) {
#if !defined(XP_UNIX) || defined(XP_MACOSX)
rv = file->AppendNative(NS_LITERAL_CSTRING("Profiles"));
#endif
// We must create the profile directory here if it does not exist.
nsresult tmp = EnsureDirectoryExists(file);
if (NS_FAILED(tmp)) {
rv = tmp;
}
}
file.swap(*aResult);
return rv;
}
nsresult nsXREDirProvider::GetUserProfilesLocalDir(nsIFile** aResult) {
nsCOMPtr<nsIFile> file;
nsresult rv = GetUserDataDirectory(getter_AddRefs(file), true);
if (NS_SUCCEEDED(rv)) {
#if !defined(XP_UNIX) || defined(XP_MACOSX)
rv = file->AppendNative(NS_LITERAL_CSTRING("Profiles"));
#endif
// We must create the profile directory here if it does not exist.
nsresult tmp = EnsureDirectoryExists(file);
if (NS_FAILED(tmp)) {
rv = tmp;
}
}
file.swap(*aResult);
return NS_OK;
}
#if defined(XP_UNIX) || defined(XP_MACOSX)
/**
* Get the directory that is the parent of the system-wide directories
* for extensions and native manifests.
*
* On OSX this is /Library/Application Support/Cliqz
* On Linux this is /usr/{lib,lib64}/cliqz
* (for 32- and 64-bit systems respsectively)
*/
static nsresult GetSystemParentDirectory(nsIFile** aFile) {
nsresult rv;
nsCOMPtr<nsIFile> localDir;
# if defined(XP_MACOSX)
rv = GetOSXFolderType(kOnSystemDisk, kApplicationSupportFolderType,
getter_AddRefs(localDir));
if (NS_SUCCEEDED(rv)) {
rv = localDir->AppendNative(NS_LITERAL_CSTRING("Cliqz"));
}
# else
NS_NAMED_LITERAL_CSTRING(dirname,
# ifdef HAVE_USR_LIB64_DIR
"/usr/lib64/cliqz"
# elif defined(__OpenBSD__) || defined(__FreeBSD__)
"/usr/local/lib/cliqz"
# else
"/usr/lib/cliqz"
# endif
);
rv = NS_NewNativeLocalFile(dirname, false, getter_AddRefs(localDir));
# endif
if (NS_SUCCEEDED(rv)) {
localDir.forget(aFile);
}
return rv;
}
#endif
NS_IMETHODIMP
nsXREDirProvider::GetFile(const char* aProperty, bool* aPersistent,
nsIFile** aFile) {
nsresult rv;
bool gettingProfile = false;
if (!strcmp(aProperty, NS_APP_USER_PROFILE_LOCAL_50_DIR)) {
// If XRE_NotifyProfile hasn't been called, don't fall through to
// mAppProvider on the profile keys.
if (!mProfileNotified) return NS_ERROR_FAILURE;
if (mProfileLocalDir) return mProfileLocalDir->Clone(aFile);
if (mAppProvider)
return mAppProvider->GetFile(aProperty, aPersistent, aFile);
// This falls through to the case below
gettingProfile = true;
}
if (!strcmp(aProperty, NS_APP_USER_PROFILE_50_DIR) || gettingProfile) {
if (!mProfileNotified) return NS_ERROR_FAILURE;
if (mProfileDir) return mProfileDir->Clone(aFile);
if (mAppProvider)
return mAppProvider->GetFile(aProperty, aPersistent, aFile);
// If we don't succeed here, bail early so that we aren't reentrant
// through the "GetProfileDir" call below.
return NS_ERROR_FAILURE;
}
if (mAppProvider) {
rv = mAppProvider->GetFile(aProperty, aPersistent, aFile);
if (NS_SUCCEEDED(rv) && *aFile) return rv;
}
*aPersistent = true;
if (!strcmp(aProperty, NS_GRE_DIR)) {
return mGREDir->Clone(aFile);
} else if (!strcmp(aProperty, NS_GRE_BIN_DIR)) {
return mGREBinDir->Clone(aFile);
} else if (!strcmp(aProperty, NS_OS_CURRENT_PROCESS_DIR) ||
!strcmp(aProperty, NS_APP_INSTALL_CLEANUP_DIR)) {
return GetAppDir()->Clone(aFile);
}
rv = NS_ERROR_FAILURE;
nsCOMPtr<nsIFile> file;
if (!strcmp(aProperty, NS_APP_PREF_DEFAULTS_50_DIR)) {
// return the GRE default prefs directory here, and the app default prefs
// directory (if applicable) in NS_APP_PREFS_DEFAULTS_DIR_LIST.
rv = mGREDir->Clone(getter_AddRefs(file));
if (NS_SUCCEEDED(rv)) {
rv = file->AppendNative(NS_LITERAL_CSTRING("defaults"));
if (NS_SUCCEEDED(rv)) rv = file->AppendNative(NS_LITERAL_CSTRING("pref"));
}
} else if (!strcmp(aProperty, NS_APP_APPLICATION_REGISTRY_DIR) ||
!strcmp(aProperty, XRE_USER_APP_DATA_DIR)) {
rv = GetUserAppDataDirectory(getter_AddRefs(file));
}
#if defined(XP_UNIX) || defined(XP_MACOSX)
else if (!strcmp(aProperty, XRE_SYS_NATIVE_MANIFESTS)) {
nsCOMPtr<nsIFile> localDir;
rv = ::GetSystemParentDirectory(getter_AddRefs(localDir));
if (NS_SUCCEEDED(rv)) {
localDir.swap(file);
}
} else if (!strcmp(aProperty, XRE_USER_NATIVE_MANIFESTS)) {
nsCOMPtr<nsIFile> localDir;
rv = GetUserDataDirectoryHome(getter_AddRefs(localDir), false);
if (NS_SUCCEEDED(rv)) {
# if defined(XP_MACOSX)
rv = localDir->AppendNative(NS_LITERAL_CSTRING("Cliqz"));
# else
rv = localDir->AppendNative(NS_LITERAL_CSTRING(".cliqz"));
# endif
}
if (NS_SUCCEEDED(rv)) {
localDir.swap(file);
}
}
#endif
else if (!strcmp(aProperty, XRE_UPDATE_ROOT_DIR)) {
rv = GetUpdateRootDir(getter_AddRefs(file));
} else if (!strcmp(aProperty, XRE_OLD_UPDATE_ROOT_DIR)) {
rv = GetUpdateRootDir(getter_AddRefs(file), true);
} else if (!strcmp(aProperty, NS_APP_APPLICATION_REGISTRY_FILE)) {
rv = GetUserAppDataDirectory(getter_AddRefs(file));
if (NS_SUCCEEDED(rv))
rv = file->AppendNative(NS_LITERAL_CSTRING(APP_REGISTRY_NAME));
} else if (!strcmp(aProperty, NS_APP_USER_PROFILES_ROOT_DIR)) {
rv = GetUserProfilesRootDir(getter_AddRefs(file));
} else if (!strcmp(aProperty, NS_APP_USER_PROFILES_LOCAL_ROOT_DIR)) {
rv = GetUserProfilesLocalDir(getter_AddRefs(file));
} else if (!strcmp(aProperty, XRE_EXECUTABLE_FILE)) {
nsCOMPtr<nsIFile> lf;
rv = XRE_GetBinaryPath(getter_AddRefs(lf));
if (NS_SUCCEEDED(rv)) file = lf;
}
else if (!strcmp(aProperty, NS_APP_PROFILE_DIR_STARTUP) && mProfileDir) {
return mProfileDir->Clone(aFile);
} else if (!strcmp(aProperty, NS_APP_PROFILE_LOCAL_DIR_STARTUP)) {
if (mProfileLocalDir) return mProfileLocalDir->Clone(aFile);
if (mProfileDir) return mProfileDir->Clone(aFile);
if (mAppProvider)
return mAppProvider->GetFile(NS_APP_PROFILE_DIR_STARTUP, aPersistent,
aFile);
}
#if defined(XP_UNIX) || defined(XP_MACOSX)
else if (!strcmp(aProperty, XRE_SYS_LOCAL_EXTENSION_PARENT_DIR)) {
# ifdef ENABLE_SYSTEM_EXTENSION_DIRS
return GetSystemExtensionsDirectory(aFile);
# else
return NS_ERROR_FAILURE;
# endif
}
#endif
#if defined(XP_UNIX) && !defined(XP_MACOSX)
else if (!strcmp(aProperty, XRE_SYS_SHARE_EXTENSION_PARENT_DIR)) {
# ifdef ENABLE_SYSTEM_EXTENSION_DIRS
# if defined(__OpenBSD__) || defined(__FreeBSD__)
static const char* const sysLExtDir = "/usr/local/share/cliqz/extensions";
# else
static const char* const sysLExtDir = "/usr/share/cliqz/extensions";
# endif
return NS_NewNativeLocalFile(nsDependentCString(sysLExtDir), false, aFile);
# else
return NS_ERROR_FAILURE;
# endif
}
#endif
else if (!strcmp(aProperty, XRE_USER_SYS_EXTENSION_DIR)) {
#ifdef ENABLE_SYSTEM_EXTENSION_DIRS
return GetSysUserExtensionsDirectory(aFile);
#else
return NS_ERROR_FAILURE;
#endif
} else if (!strcmp(aProperty, XRE_USER_SYS_EXTENSION_DEV_DIR)) {
return GetSysUserExtensionsDevDirectory(aFile);
} else if (!strcmp(aProperty, XRE_USER_RUNTIME_DIR)) {
#if defined(XP_UNIX)
nsPrintfCString path("/run/user/%d/%s/", getuid(), GetAppName());
ToLowerCase(path);
return NS_NewNativeLocalFile(path, false, aFile);
#else
return NS_ERROR_FAILURE;
#endif
} else if (!strcmp(aProperty, XRE_APP_DISTRIBUTION_DIR)) {
bool persistent = false;
rv = GetFile(NS_GRE_DIR, &persistent, getter_AddRefs(file));
if (NS_SUCCEEDED(rv))
rv = file->AppendNative(NS_LITERAL_CSTRING("distribution"));
} else if (!strcmp(aProperty, XRE_APP_FEATURES_DIR)) {
rv = GetAppDir()->Clone(getter_AddRefs(file));
if (NS_SUCCEEDED(rv))
rv = file->AppendNative(NS_LITERAL_CSTRING("features"));
} else if (!strcmp(aProperty, XRE_ADDON_APP_DIR)) {
nsCOMPtr<nsIDirectoryServiceProvider> dirsvc(
do_GetService("@mozilla.org/file/directory_service;1", &rv));
if (NS_FAILED(rv)) return rv;
bool unused;
rv = dirsvc->GetFile("XCurProcD", &unused, getter_AddRefs(file));
}
#if defined(MOZ_SANDBOX)
else if (!strcmp(aProperty, NS_APP_CONTENT_PROCESS_TEMP_DIR)) {
if (!mContentTempDir && NS_FAILED((rv = LoadContentProcessTempDir()))) {
return rv;
}
rv = mContentTempDir->Clone(getter_AddRefs(file));
}
#endif // defined(MOZ_SANDBOX)
#if defined(MOZ_SANDBOX)
else if (0 == strcmp(aProperty, NS_APP_PLUGIN_PROCESS_TEMP_DIR)) {
if (!mPluginTempDir && NS_FAILED((rv = LoadPluginProcessTempDir()))) {
return rv;
}
rv = mPluginTempDir->Clone(getter_AddRefs(file));
}
#endif // defined(MOZ_SANDBOX)
else if (NS_SUCCEEDED(GetProfileStartupDir(getter_AddRefs(file)))) {
// We need to allow component, xpt, and chrome registration to
// occur prior to the profile-after-change notification.
if (!strcmp(aProperty, NS_APP_USER_CHROME_DIR)) {
rv = file->AppendNative(NS_LITERAL_CSTRING("chrome"));
}
}
if (NS_SUCCEEDED(rv) && file) {
file.forget(aFile);
return NS_OK;
}
bool ensureFilePermissions = false;
if (NS_SUCCEEDED(GetProfileDir(getter_AddRefs(file)))) {
if (!strcmp(aProperty, NS_APP_PREFS_50_DIR)) {
rv = NS_OK;
} else if (!strcmp(aProperty, NS_APP_PREFS_50_FILE)) {
rv = file->AppendNative(NS_LITERAL_CSTRING("prefs.js"));
} else if (!strcmp(aProperty, NS_APP_PREFS_OVERRIDE_DIR)) {
rv = mProfileDir->Clone(getter_AddRefs(file));
nsresult tmp =
file->AppendNative(NS_LITERAL_CSTRING(PREF_OVERRIDE_DIRNAME));
if (NS_FAILED(tmp)) {
rv = tmp;
}
tmp = EnsureDirectoryExists(file);
if (NS_FAILED(tmp)) {
rv = tmp;
}
}
}
if (NS_FAILED(rv) || !file) return NS_ERROR_FAILURE;
if (ensureFilePermissions) {
bool fileToEnsureExists;
bool isWritable;
if (NS_SUCCEEDED(file->Exists(&fileToEnsureExists)) && fileToEnsureExists &&
NS_SUCCEEDED(file->IsWritable(&isWritable)) && !isWritable) {
uint32_t permissions;
if (NS_SUCCEEDED(file->GetPermissions(&permissions))) {
rv = file->SetPermissions(permissions | 0600);
NS_ASSERTION(NS_SUCCEEDED(rv), "failed to ensure file permissions");
}
}
}
file.forget(aFile);
return NS_OK;
}
static void LoadDirIntoArray(nsIFile* dir, const char* const* aAppendList,
nsCOMArray<nsIFile>& aDirectories) {
if (!dir) return;
nsCOMPtr<nsIFile> subdir;
dir->Clone(getter_AddRefs(subdir));
if (!subdir) return;
for (const char* const* a = aAppendList; *a; ++a) {
subdir->AppendNative(nsDependentCString(*a));
}
bool exists;
if (NS_SUCCEEDED(subdir->Exists(&exists)) && exists) {
aDirectories.AppendObject(subdir);
}
}
NS_IMETHODIMP
nsXREDirProvider::GetFiles(const char* aProperty,
nsISimpleEnumerator** aResult) {
nsresult rv;
nsCOMPtr<nsISimpleEnumerator> appEnum;
nsCOMPtr<nsIDirectoryServiceProvider2> appP2(do_QueryInterface(mAppProvider));
if (appP2) {
rv = appP2->GetFiles(aProperty, getter_AddRefs(appEnum));
if (NS_FAILED(rv)) {
appEnum = nullptr;
} else if (rv != NS_SUCCESS_AGGREGATE_RESULT) {
appEnum.forget(aResult);
return NS_OK;
}
}
nsCOMPtr<nsISimpleEnumerator> xreEnum;
rv = GetFilesInternal(aProperty, getter_AddRefs(xreEnum));
if (NS_FAILED(rv)) {
if (appEnum) {
appEnum.forget(aResult);
return NS_SUCCESS_AGGREGATE_RESULT;
}
return rv;
}
rv = NS_NewUnionEnumerator(aResult, appEnum, xreEnum);
if (NS_FAILED(rv)) return rv;
return NS_SUCCESS_AGGREGATE_RESULT;
}
#if defined(MOZ_SANDBOX)
static const char* GetProcessTempBaseDirKey() {
# if defined(XP_WIN)
return NS_WIN_LOW_INTEGRITY_TEMP_BASE;
# else
return NS_OS_TEMP_DIR;
# endif
}
//
// Sets mContentTempDir so that it refers to the appropriate temp dir.
// If the sandbox is enabled, NS_APP_CONTENT_PROCESS_TEMP_DIR, otherwise
// NS_OS_TEMP_DIR is used.
//
nsresult nsXREDirProvider::LoadContentProcessTempDir() {
// The parent is responsible for creating the sandbox temp dir.
if (XRE_IsParentProcess()) {
mContentProcessSandboxTempDir =
CreateProcessSandboxTempDir(GeckoProcessType_Content);
mContentTempDir = mContentProcessSandboxTempDir;
} else {
mContentTempDir = !IsContentSandboxDisabled()
? GetProcessSandboxTempDir(GeckoProcessType_Content)
: nullptr;
}
if (!mContentTempDir) {
nsresult rv =
NS_GetSpecialDirectory(NS_OS_TEMP_DIR, getter_AddRefs(mContentTempDir));
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
}
# if defined(XP_WIN)
// The content temp dir can be used in sandbox rules, so we need to make sure
// it doesn't contain any junction points or symlinks or the sandbox will
// reject those rules.
if (!mozilla::widget::WinUtils::ResolveJunctionPointsAndSymLinks(
mContentTempDir)) {
NS_WARNING("Failed to resolve Content Temp Dir.");
}
# endif
return NS_OK;
}
//
// Sets mPluginTempDir so that it refers to the appropriate temp dir.
// If NS_APP_PLUGIN_PROCESS_TEMP_DIR fails for any reason, NS_OS_TEMP_DIR
// is used.
//
nsresult nsXREDirProvider::LoadPluginProcessTempDir() {
// The parent is responsible for creating the sandbox temp dir.
if (XRE_IsParentProcess()) {
mPluginProcessSandboxTempDir =
CreateProcessSandboxTempDir(GeckoProcessType_Plugin);
mPluginTempDir = mPluginProcessSandboxTempDir;
} else {
MOZ_ASSERT(XRE_IsPluginProcess());
mPluginTempDir = GetProcessSandboxTempDir(GeckoProcessType_Plugin);
}
if (!mPluginTempDir) {
nsresult rv =
NS_GetSpecialDirectory(NS_OS_TEMP_DIR, getter_AddRefs(mPluginTempDir));
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
}
# if defined(XP_WIN)
// The temp dir is used in sandbox rules, so we need to make sure
// it doesn't contain any junction points or symlinks or the sandbox will
// reject those rules.
if (!mozilla::widget::WinUtils::ResolveJunctionPointsAndSymLinks(
mPluginTempDir)) {
NS_WARNING("Failed to resolve plugin temp dir.");
}
# endif
return NS_OK;
}
static bool IsContentSandboxDisabled() {
return !mozilla::BrowserTabsRemoteAutostart() ||
(!mozilla::IsContentSandboxEnabled());
}
//
// If a process sandbox temp dir is to be used, returns an nsIFile
// for the directory. Returns null if an error occurs.
//
static already_AddRefed<nsIFile> GetProcessSandboxTempDir(
GeckoProcessType type) {
nsCOMPtr<nsIFile> localFile;
nsresult rv = NS_GetSpecialDirectory(GetProcessTempBaseDirKey(),
getter_AddRefs(localFile));
if (NS_WARN_IF(NS_FAILED(rv))) {
return nullptr;
}
MOZ_ASSERT((type == GeckoProcessType_Content) ||
(type == GeckoProcessType_Plugin));
const char* prefKey = (type == GeckoProcessType_Content)
? "security.sandbox.content.tempDirSuffix"
: "security.sandbox.plugin.tempDirSuffix";
nsAutoString tempDirSuffix;
rv = mozilla::Preferences::GetString(prefKey, tempDirSuffix);
if (NS_WARN_IF(NS_FAILED(rv)) || tempDirSuffix.IsEmpty()) {
return nullptr;
}
rv = localFile->Append(NS_LITERAL_STRING("Temp-") + tempDirSuffix);
if (NS_WARN_IF(NS_FAILED(rv))) {
return nullptr;
}
return localFile.forget();
}
//
// Create a temporary directory for use from sandboxed processes.
// Only called in the parent. The path is derived from a UUID stored in a
// pref which is available to content and plugin processes. Returns null
// if the content sandbox is disabled or if an error occurs.
//
static already_AddRefed<nsIFile> CreateProcessSandboxTempDir(
GeckoProcessType procType) {
if ((procType == GeckoProcessType_Content) && IsContentSandboxDisabled()) {
return nullptr;
}
MOZ_ASSERT((procType == GeckoProcessType_Content) ||
(procType == GeckoProcessType_Plugin));
// Get (and create if blank) temp directory suffix pref.
const char* pref = (procType == GeckoProcessType_Content)
? "security.sandbox.content.tempDirSuffix"
: "security.sandbox.plugin.tempDirSuffix";
nsresult rv;
nsAutoString tempDirSuffix;
mozilla::Preferences::GetString(pref, tempDirSuffix);
if (tempDirSuffix.IsEmpty()) {
nsCOMPtr<nsIUUIDGenerator> uuidgen =
do_GetService("@mozilla.org/uuid-generator;1", &rv);
if (NS_WARN_IF(NS_FAILED(rv))) {
return nullptr;
}
nsID uuid;
rv = uuidgen->GenerateUUIDInPlace(&uuid);
if (NS_WARN_IF(NS_FAILED(rv))) {
return nullptr;
}
char uuidChars[NSID_LENGTH];
uuid.ToProvidedString(uuidChars);
tempDirSuffix.AssignASCII(uuidChars, NSID_LENGTH);
# ifdef XP_UNIX
// Braces in a path are somewhat annoying to deal with
// and pretty alien on Unix
tempDirSuffix.StripChars(u"{}");
# endif
// Save the pref
rv = mozilla::Preferences::SetString(pref, tempDirSuffix);
if (NS_WARN_IF(NS_FAILED(rv))) {
// If we fail to save the pref we don't want to create the temp dir,
// because we won't be able to clean it up later.
return nullptr;
}
nsCOMPtr<nsIPrefService> prefsvc = mozilla::Preferences::GetService();
if (!prefsvc || NS_FAILED((rv = prefsvc->SavePrefFile(nullptr)))) {
// Again, if we fail to save the pref file we might not be able to clean
// up the temp directory, so don't create one. Note that in the case
// the preference values allows an off main thread save, the successful
// return from the call doesn't mean we actually saved the file. See
// bug 1364496 for details.
NS_WARNING("Failed to save pref file, cannot create temp dir.");
return nullptr;
}
}
nsCOMPtr<nsIFile> sandboxTempDir = GetProcessSandboxTempDir(procType);
if (!sandboxTempDir) {
NS_WARNING("Failed to determine sandbox temp dir path.");
return nullptr;
}
// Remove the directory. It may exist due to a previous crash.
if (NS_FAILED(DeleteDirIfExists(sandboxTempDir))) {
NS_WARNING("Failed to reset sandbox temp dir.");
return nullptr;
}
// Create the directory
rv = sandboxTempDir->Create(nsIFile::DIRECTORY_TYPE, 0700);
if (NS_FAILED(rv)) {
NS_WARNING("Failed to create sandbox temp dir.");
return nullptr;
}
return sandboxTempDir.forget();
}
static nsresult DeleteDirIfExists(nsIFile* dir) {
if (dir) {
// Don't return an error if the directory doesn't exist.
// Windows Remove() returns NS_ERROR_FILE_NOT_FOUND while
// OS X returns NS_ERROR_FILE_TARGET_DOES_NOT_EXIST.
nsresult rv = dir->Remove(/* aRecursive */ true);
if (NS_FAILED(rv) && rv != NS_ERROR_FILE_NOT_FOUND &&
rv != NS_ERROR_FILE_TARGET_DOES_NOT_EXIST) {
return rv;
}
}
return NS_OK;
}
#endif // defined(MOZ_SANDBOX)
static const char* const kAppendPrefDir[] = {"defaults", "preferences",
nullptr};
nsresult nsXREDirProvider::GetFilesInternal(const char* aProperty,
nsISimpleEnumerator** aResult) {
nsresult rv = NS_OK;
*aResult = nullptr;
if (!strcmp(aProperty, NS_APP_PREFS_DEFAULTS_DIR_LIST)) {
nsCOMArray<nsIFile> directories;
LoadDirIntoArray(mXULAppDir, kAppendPrefDir, directories);
rv = NS_NewArrayEnumerator(aResult, directories, NS_GET_IID(nsIFile));
} else if (!strcmp(aProperty, NS_APP_CHROME_DIR_LIST)) {
// NS_APP_CHROME_DIR_LIST is only used to get default (native) icons
// for OS window decoration.
static const char* const kAppendChromeDir[] = {"chrome", nullptr};
nsCOMArray<nsIFile> directories;
LoadDirIntoArray(mXULAppDir, kAppendChromeDir, directories);
rv = NS_NewArrayEnumerator(aResult, directories, NS_GET_IID(nsIFile));
} else
rv = NS_ERROR_FAILURE;
return rv;
}
NS_IMETHODIMP
nsXREDirProvider::GetDirectory(nsIFile** aResult) {
NS_ENSURE_TRUE(mProfileDir, NS_ERROR_NOT_INITIALIZED);
return mProfileDir->Clone(aResult);
}
void nsXREDirProvider::InitializeUserPrefs() {
if (!mPrefsInitialized) {
// Temporarily set mProfileNotified to true so that the preference service
// can access the profile directory during initialization. Afterwards, clear
// it so that no other code can inadvertently access it until we get to
// profile-do-change.
mozilla::AutoRestore<bool> ar(mProfileNotified);
mProfileNotified = true;
mozilla::Preferences::InitializeUserPrefs();
}
}
void nsXREDirProvider::FinishInitializingUserPrefs() {
if (!mPrefsInitialized) {
// See InitializeUserPrefs above.
mozilla::AutoRestore<bool> ar(mProfileNotified);
mProfileNotified = true;
mozilla::Preferences::FinishInitializingUserPrefs();
mPrefsInitialized = true;
}
}
NS_IMETHODIMP
nsXREDirProvider::DoStartup() {
nsresult rv;
if (!mProfileNotified) {
nsCOMPtr<nsIObserverService> obsSvc =
mozilla::services::GetObserverService();
if (!obsSvc) return NS_ERROR_FAILURE;
mProfileNotified = true;
/*
Make sure we've setup prefs before profile-do-change to be able to use
them to track crashes and because we want to begin crash tracking before
other code run from this notification since they may cause crashes.
*/
MOZ_ASSERT(mPrefsInitialized);
bool safeModeNecessary = false;
nsCOMPtr<nsIAppStartup> appStartup(
mozilla::components::AppStartup::Service());
if (appStartup) {
rv = appStartup->TrackStartupCrashBegin(&safeModeNecessary);
if (NS_FAILED(rv) && rv != NS_ERROR_NOT_AVAILABLE)
NS_WARNING("Error while beginning startup crash tracking");
if (!gSafeMode && safeModeNecessary) {
appStartup->RestartInSafeMode(nsIAppStartup::eForceQuit);
return NS_OK;
}
}
static const char16_t kStartup[] = {'s', 't', 'a', 'r',
't', 'u', 'p', '\0'};
obsSvc->NotifyObservers(nullptr, "profile-do-change", kStartup);
// Initialize the Enterprise Policies service in the parent process
// In the content process it's loaded on demand when needed
if (XRE_IsParentProcess()) {
nsCOMPtr<nsIObserver> policies(
do_GetService("@mozilla.org/enterprisepolicies;1"));
if (policies) {
policies->Observe(nullptr, "policies-startup", nullptr);
}
}
#if defined(MOZ_SANDBOX) && defined(XP_WIN)
// Call SandboxBroker to initialize things that depend on Gecko machinery
// like the directory provider. We insert this initialization code here
// (rather than in XRE_mainRun) because we need NS_APP_USER_PROFILE_50_DIR
// to be known and so that any child content processes spawned by extensions
// from the notifications below will have all the requisite directories
// white-listed for read/write access. An example of this is the
// tor-launcher launching the network configuration window. See bug 1485836.
mozilla::SandboxBroker::GeckoDependentInitialize();
#endif
// Init the Extension Manager
nsCOMPtr<nsIObserver> em =
do_GetService("@mozilla.org/addons/integration;1");
if (em) {
em->Observe(nullptr, "addons-startup", nullptr);
} else {
NS_WARNING("Failed to create Addons Manager.");
}
obsSvc->NotifyObservers(nullptr, "profile-after-change", kStartup);
// Any component that has registered for the profile-after-change category
// should also be created at this time.
(void)NS_CreateServicesFromCategory("profile-after-change", nullptr,
"profile-after-change");
if (gSafeMode && safeModeNecessary) {
static const char16_t kCrashed[] = {'c', 'r', 'a', 's',
'h', 'e', 'd', '\0'};
obsSvc->NotifyObservers(nullptr, "safemode-forced", kCrashed);
}
// 1 = Regular mode, 2 = Safe mode, 3 = Safe mode forced
int mode = 1;
if (gSafeMode) {
if (safeModeNecessary)
mode = 3;
else
mode = 2;
}
mozilla::Telemetry::Accumulate(mozilla::Telemetry::SAFE_MODE_USAGE, mode);
// Telemetry about number of profiles.
nsCOMPtr<nsIToolkitProfileService> profileService =
do_GetService("@mozilla.org/toolkit/profile-service;1");
if (profileService) {
uint32_t count = 0;
rv = profileService->GetProfileCount(&count);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
mozilla::Telemetry::Accumulate(mozilla::Telemetry::NUMBER_OF_PROFILES,
count);
}
obsSvc->NotifyObservers(nullptr, "profile-initial-state", nullptr);