gecko-dev/toolkit/xre/nsUpdateDriver.cpp

966 строки
28 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* 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 <stdlib.h>
#include <stdio.h>
#include "nsUpdateDriver.h"
#include "nsXULAppAPI.h"
#include "nsAppRunner.h"
#include "nsIWritablePropertyBag.h"
#include "nsIFile.h"
#include "nsVariant.h"
#include "nsCOMPtr.h"
#include "nsString.h"
#include "prproces.h"
#include "mozilla/Logging.h"
#include "prenv.h"
#include "nsVersionComparator.h"
#include "nsDirectoryServiceDefs.h"
#include "nsThreadUtils.h"
#include "nsIXULAppInfo.h"
#include "mozilla/Preferences.h"
#include "nsPrintfCString.h"
#include "mozilla/DebugOnly.h"
#include "mozilla/Printf.h"
#ifdef XP_MACOSX
#include "nsILocalFileMac.h"
#include "nsCommandLineServiceMac.h"
#include "MacLaunchHelper.h"
#include "updaterfileutils_osx.h"
#include "mozilla/Monitor.h"
#endif
#if defined(XP_WIN)
# include <direct.h>
# include <process.h>
# include <windows.h>
# include <shlwapi.h>
# define getcwd(path, size) _getcwd(path, size)
# define getpid() GetCurrentProcessId()
#elif defined(XP_UNIX)
# include <unistd.h>
# include <sys/wait.h>
#endif
using namespace mozilla;
static LazyLogModule sUpdateLog("updatedriver");
#define LOG(args) MOZ_LOG(sUpdateLog, mozilla::LogLevel::Debug, args)
#ifdef XP_WIN
#define UPDATER_BIN "updater.exe"
#elif XP_MACOSX
#define UPDATER_BIN "org.mozilla.updater"
#else
#define UPDATER_BIN "updater"
#endif
#define UPDATER_INI "updater.ini"
#ifdef XP_MACOSX
#define UPDATER_APP "updater.app"
#endif
#if defined(XP_UNIX) && !defined(XP_MACOSX)
#define UPDATER_PNG "updater.png"
#endif
#ifdef XP_MACOSX
static void
UpdateDriverSetupMacCommandLine(int& argc, char**& argv, bool restart)
{
if (NS_IsMainThread()) {
CommandLineServiceMac::SetupMacCommandLine(argc, argv, restart);
return;
}
// Bug 1335916: SetupMacCommandLine calls a CoreFoundation function that
// asserts that it was called from the main thread, so if we are not the main
// thread, we have to dispatch that call to there. But we also have to get the
// result from it, so we can't just dispatch and return, we have to wait
// until the dispatched operation actually completes. So we also set up a
// monitor to signal us when that happens, and block until then.
Monitor monitor("nsUpdateDriver SetupMacCommandLine");
nsresult rv = NS_DispatchToMainThread(
NS_NewRunnableFunction("UpdateDriverSetupMacCommandLine",
[&argc, &argv, restart, &monitor]() -> void
{
CommandLineServiceMac::SetupMacCommandLine(argc, argv, restart);
MonitorAutoLock(monitor).Notify();
}));
if (NS_FAILED(rv)) {
LOG(("Update driver error dispatching SetupMacCommandLine to main thread: %d\n", rv));
return;
}
// The length of this wait is arbitrary, but should be long enough that having
// it expire means something is seriously wrong.
rv = MonitorAutoLock(monitor).Wait(PR_SecondsToInterval(60));
if (NS_FAILED(rv)) {
LOG(("Update driver timed out waiting for SetupMacCommandLine: %d\n", rv));
}
}
#endif
static nsresult
GetCurrentWorkingDir(char *buf, size_t size)
{
// Cannot use NS_GetSpecialDirectory because XPCOM is not yet initialized.
// This code is duplicated from xpcom/io/SpecialSystemDirectory.cpp:
#if defined(XP_WIN)
wchar_t wpath[MAX_PATH];
if (!_wgetcwd(wpath, size))
return NS_ERROR_FAILURE;
NS_ConvertUTF16toUTF8 path(wpath);
strncpy(buf, path.get(), size);
#else
if(!getcwd(buf, size))
return NS_ERROR_FAILURE;
#endif
return NS_OK;
}
/**
* Get the path to the installation directory. For Mac OS X this will be the
* bundle directory.
*
* @param appDir the application directory file object
* @param installDirPath the path to the installation directory
*/
static nsresult
GetInstallDirPath(nsIFile *appDir, nsACString& installDirPath)
{
nsresult rv;
#ifdef XP_MACOSX
nsCOMPtr<nsIFile> parentDir1, parentDir2;
rv = appDir->GetParent(getter_AddRefs(parentDir1));
if (NS_FAILED(rv)) {
return rv;
}
rv = parentDir1->GetParent(getter_AddRefs(parentDir2));
if (NS_FAILED(rv)) {
return rv;
}
rv = parentDir2->GetNativePath(installDirPath);
#elif XP_WIN
nsAutoString installDirPathW;
rv = appDir->GetPath(installDirPathW);
if (NS_FAILED(rv)) {
return rv;
}
installDirPath = NS_ConvertUTF16toUTF8(installDirPathW);
#else
rv = appDir->GetNativePath(installDirPath);
#endif
if (NS_FAILED(rv)) {
return rv;
}
return NS_OK;
}
static bool
GetFile(nsIFile* dir, const nsACString& name, nsCOMPtr<nsIFile>& result)
{
nsresult rv;
nsCOMPtr<nsIFile> file;
rv = dir->Clone(getter_AddRefs(file));
if (NS_FAILED(rv))
return false;
rv = file->AppendNative(name);
if (NS_FAILED(rv))
return false;
result = do_QueryInterface(file, &rv);
return NS_SUCCEEDED(rv);
}
static bool
GetStatusFile(nsIFile *dir, nsCOMPtr<nsIFile> &result)
{
return GetFile(dir, NS_LITERAL_CSTRING("update.status"), result);
}
/**
* Get the contents of the update.status file.
*
* @param statusFile the status file object.
* @param buf the buffer holding the file contents
*
* @return true if successful, false otherwise.
*/
template <size_t Size>
static bool
GetStatusFileContents(nsIFile *statusFile, char (&buf)[Size])
{
static_assert(Size > 16, "Buffer needs to be large enough to hold the known status codes");
PRFileDesc *fd = nullptr;
nsresult rv = statusFile->OpenNSPRFileDesc(PR_RDONLY, 0660, &fd);
if (NS_FAILED(rv))
return false;
const int32_t n = PR_Read(fd, buf, Size);
PR_Close(fd);
return (n >= 0);
}
typedef enum {
eNoUpdateAction,
ePendingUpdate,
ePendingService,
ePendingElevate,
eAppliedUpdate,
eAppliedService,
} UpdateStatus;
/**
* Returns a value indicating what needs to be done in order to handle an update.
*
* @param dir the directory in which we should look for an update.status file.
* @param statusFile the update.status file found in the directory.
*
* @return the update action to be performed.
*/
static UpdateStatus
GetUpdateStatus(nsIFile* dir, nsCOMPtr<nsIFile> &statusFile)
{
if (GetStatusFile(dir, statusFile)) {
char buf[32];
if (GetStatusFileContents(statusFile, buf)) {
const char kPending[] = "pending";
const char kPendingService[] = "pending-service";
const char kPendingElevate[] = "pending-elevate";
const char kApplied[] = "applied";
const char kAppliedService[] = "applied-service";
if (!strncmp(buf, kPendingElevate, sizeof(kPendingElevate) - 1)) {
return ePendingElevate;
}
if (!strncmp(buf, kPendingService, sizeof(kPendingService) - 1)) {
return ePendingService;
}
if (!strncmp(buf, kPending, sizeof(kPending) - 1)) {
return ePendingUpdate;
}
if (!strncmp(buf, kAppliedService, sizeof(kAppliedService) - 1)) {
return eAppliedService;
}
if (!strncmp(buf, kApplied, sizeof(kApplied) - 1)) {
return eAppliedUpdate;
}
}
}
return eNoUpdateAction;
}
static bool
GetVersionFile(nsIFile *dir, nsCOMPtr<nsIFile> &result)
{
return GetFile(dir, NS_LITERAL_CSTRING("update.version"), result);
}
// Compares the current application version with the update's application
// version.
static bool
IsOlderVersion(nsIFile *versionFile, const char *appVersion)
{
PRFileDesc *fd = nullptr;
nsresult rv = versionFile->OpenNSPRFileDesc(PR_RDONLY, 0660, &fd);
if (NS_FAILED(rv))
return true;
char buf[32];
const int32_t n = PR_Read(fd, buf, sizeof(buf));
PR_Close(fd);
if (n < 0)
return false;
// Trim off the trailing newline
if (buf[n - 1] == '\n')
buf[n - 1] = '\0';
// If the update xml doesn't provide the application version the file will
// contain the string "null" and it is assumed that the update is not older.
const char kNull[] = "null";
if (strncmp(buf, kNull, sizeof(kNull) - 1) == 0)
return false;
if (mozilla::Version(appVersion) > buf)
return true;
return false;
}
static bool
CopyFileIntoUpdateDir(nsIFile *parentDir, const nsACString& leaf, nsIFile *updateDir)
{
nsCOMPtr<nsIFile> file;
// Make sure there is not an existing file in the target location.
nsresult rv = updateDir->Clone(getter_AddRefs(file));
if (NS_FAILED(rv))
return false;
rv = file->AppendNative(leaf);
if (NS_FAILED(rv))
return false;
file->Remove(true);
// Now, copy into the target location.
rv = parentDir->Clone(getter_AddRefs(file));
if (NS_FAILED(rv))
return false;
rv = file->AppendNative(leaf);
if (NS_FAILED(rv))
return false;
rv = file->CopyToNative(updateDir, EmptyCString());
if (NS_FAILED(rv))
return false;
return true;
}
static bool
CopyUpdaterIntoUpdateDir(nsIFile *greDir, nsIFile *appDir, nsIFile *updateDir,
nsCOMPtr<nsIFile> &updater)
{
// Copy the updater application from the GRE and the updater ini from the app.
#if defined(XP_MACOSX)
if (!CopyFileIntoUpdateDir(appDir, NS_LITERAL_CSTRING(UPDATER_APP), updateDir))
return false;
CopyFileIntoUpdateDir(greDir, NS_LITERAL_CSTRING(UPDATER_INI), updateDir);
#else
if (!CopyFileIntoUpdateDir(greDir, NS_LITERAL_CSTRING(UPDATER_BIN), updateDir))
return false;
CopyFileIntoUpdateDir(appDir, NS_LITERAL_CSTRING(UPDATER_INI), updateDir);
#endif
#if defined(XP_UNIX) && !defined(XP_MACOSX) && !defined(ANDROID)
nsCOMPtr<nsIFile> iconDir;
appDir->Clone(getter_AddRefs(iconDir));
iconDir->AppendNative(NS_LITERAL_CSTRING("icons"));
if (!CopyFileIntoUpdateDir(iconDir, NS_LITERAL_CSTRING(UPDATER_PNG), updateDir))
return false;
#endif
// Finally, return the location of the updater binary.
nsresult rv = updateDir->Clone(getter_AddRefs(updater));
if (NS_FAILED(rv))
return false;
#if defined(XP_MACOSX)
rv = updater->AppendNative(NS_LITERAL_CSTRING(UPDATER_APP));
nsresult tmp = updater->AppendNative(NS_LITERAL_CSTRING("Contents"));
if (NS_FAILED(tmp)) {
rv = tmp;
}
tmp = updater->AppendNative(NS_LITERAL_CSTRING("MacOS"));
if (NS_FAILED(tmp) || NS_FAILED(rv))
return false;
#endif
rv = updater->AppendNative(NS_LITERAL_CSTRING(UPDATER_BIN));
return NS_SUCCEEDED(rv);
}
/**
* Appends the specified path to the library path.
* This is used so that updater can find libmozsqlite3.so and other shared libs.
*
* @param pathToAppend A new library path to prepend to LD_LIBRARY_PATH
*/
#if defined(MOZ_VERIFY_MAR_SIGNATURE) && !defined(XP_WIN) && !defined(XP_MACOSX)
#include "prprf.h"
#define PATH_SEPARATOR ":"
#define LD_LIBRARY_PATH_ENVVAR_NAME "LD_LIBRARY_PATH"
static void
AppendToLibPath(const char *pathToAppend)
{
char *pathValue = getenv(LD_LIBRARY_PATH_ENVVAR_NAME);
if (nullptr == pathValue || '\0' == *pathValue) {
// Leak the string because that is required by PR_SetEnv.
char *s = Smprintf("%s=%s", LD_LIBRARY_PATH_ENVVAR_NAME, pathToAppend).release();
PR_SetEnv(s);
} else if (!strstr(pathValue, pathToAppend)) {
// Leak the string because that is required by PR_SetEnv.
char *s = Smprintf("%s=%s" PATH_SEPARATOR "%s",
LD_LIBRARY_PATH_ENVVAR_NAME, pathToAppend, pathValue).release();
PR_SetEnv(s);
}
}
#endif
/**
* Applies, switches, or stages an update.
*
* @param greDir the GRE directory
* @param updateDir the update root directory
* @param appDir the application directory
* @param appArgc the number of args passed to the application
* @param appArgv the args passed to the application
* (used for restarting the application when necessary)
* @param restart true when a restart is necessary.
* @param isStaged true when the update has already been staged
* @param outpid (out) parameter holding the handle to the updater application
* when staging updates
*/
static void
ApplyUpdate(nsIFile *greDir, nsIFile *updateDir, nsIFile *appDir, int appArgc,
char **appArgv, bool restart, bool isStaged, ProcessType *outpid)
{
// The following determines the update operation to perform.
// 1. When restart is false the update will be staged.
// 2. When restart is true and isStaged is false the update will apply the mar
// file to the installation directory.
// 3. When restart is true and isStaged is true the update will switch the
// staged update with the installation directory.
nsresult rv;
nsCOMPtr<nsIFile> updater;
nsAutoCString updaterPath;
nsAutoCString updateDirPath;
#if defined(XP_WIN)
// Get an nsIFile reference for the updater in the installation dir.
if (!GetFile(greDir, NS_LITERAL_CSTRING(UPDATER_BIN), updater)) {
return;
}
// Get the path to the updater.
nsAutoString updaterPathW;
rv = updater->GetPath(updaterPathW);
if (NS_FAILED(rv)) {
return;
}
updaterPath = NS_ConvertUTF16toUTF8(updaterPathW);
// Get the path to the update dir.
nsAutoString updateDirPathW;
rv = updateDir->GetPath(updateDirPathW);
if (NS_FAILED(rv)) {
return;
}
updateDirPath = NS_ConvertUTF16toUTF8(updateDirPathW);
#else
if (isStaged) {
nsCOMPtr<nsIFile> mozUpdaterDir;
rv = updateDir->Clone(getter_AddRefs(mozUpdaterDir));
if (NS_FAILED(rv)) {
LOG(("failed cloning update dir\n"));
return;
}
// Create a new directory named MozUpdater in the updates/0 directory to copy
// the updater files to that will be used to replace the installation with the
// staged application that has been updated. Note that we don't check for
// directory creation errors since the call to CopyUpdaterIntoUpdateDir will
// fail if the creation of the directory fails. A unique directory is created
// in MozUpdater in case a previous attempt locked the directory or files.
mozUpdaterDir->Append(NS_LITERAL_STRING("MozUpdater"));
mozUpdaterDir->Append(NS_LITERAL_STRING("bgupdate"));
rv = mozUpdaterDir->CreateUnique(nsIFile::DIRECTORY_TYPE, 0755);
if (NS_FAILED(rv)) {
LOG(("failed creating unique dir\n"));
return;
}
// Copy the updater and files needed to update into the MozUpdater/bgupdate
// directory in the update dir and get an nsIFile reference to the copied
// updater.
if (!CopyUpdaterIntoUpdateDir(greDir, appDir, mozUpdaterDir, updater)) {
LOG(("failed copying updater\n"));
return;
}
} else {
// Copy the updater and files needed to update into the update directory and
// get an nsIFile reference to the copied updater.
if (!CopyUpdaterIntoUpdateDir(greDir, appDir, updateDir, updater)) {
LOG(("failed copying updater\n"));
return;
}
}
// Get the path to the updater that will be used.
rv = updater->GetNativePath(updaterPath);
if (NS_FAILED(rv)) {
return;
}
// Get the path to the update dir.
rv = updateDir->GetNativePath(updateDirPath);
if (NS_FAILED(rv)) {
return;
}
#endif
// appFilePath and workingDirPath are only used when the application will be
// restarted.
nsAutoCString appFilePath;
char workingDirPath[MAXPATHLEN];
if (restart) {
// Get the path to the current working directory.
rv = GetCurrentWorkingDir(workingDirPath, sizeof(workingDirPath));
if (NS_FAILED(rv)) {
return;
}
// Get the application file path used by the updater to restart the
// application after the update has finished.
nsCOMPtr<nsIFile> appFile;
XRE_GetBinaryPath(getter_AddRefs(appFile));
if (!appFile) {
return;
}
#if defined(XP_WIN)
nsAutoString appFilePathW;
rv = appFile->GetPath(appFilePathW);
if (NS_FAILED(rv)) {
return;
}
appFilePath = NS_ConvertUTF16toUTF8(appFilePathW);
#else
rv = appFile->GetNativePath(appFilePath);
if (NS_FAILED(rv)) {
return;
}
#endif
}
// Get the installation directory path.
nsAutoCString installDirPath;
rv = GetInstallDirPath(appDir, installDirPath);
if (NS_FAILED(rv)) {
return;
}
nsAutoCString applyToDirPath;
nsCOMPtr<nsIFile> updatedDir;
if (restart && !isStaged) {
// The install directory is the same as the apply to directory.
applyToDirPath.Assign(installDirPath);
} else {
// Get the directory where the update is staged or will be staged.
#if defined(XP_MACOSX)
if (!GetFile(updateDir, NS_LITERAL_CSTRING("Updated.app"), updatedDir)) {
#else
if (!GetFile(appDir, NS_LITERAL_CSTRING("updated"), updatedDir)) {
#endif
return;
}
#if defined(XP_WIN)
nsAutoString applyToDirPathW;
rv = updatedDir->GetPath(applyToDirPathW);
if (NS_FAILED(rv)) {
return;
}
applyToDirPath = NS_ConvertUTF16toUTF8(applyToDirPathW);
#else
rv = updatedDir->GetNativePath(applyToDirPath);
#endif
}
if (NS_FAILED(rv)) {
return;
}
if (restart && isStaged) {
// When the update should already be staged make sure that the updated
// directory exists.
bool updatedDirExists = false;
if (NS_FAILED(updatedDir->Exists(&updatedDirExists)) || !updatedDirExists) {
return;
}
}
// On platforms where we are not calling execv, we may need to make the
// updater executable wait for the calling process to exit. Otherwise, the
// updater may have trouble modifying our executable image (because it might
// still be in use). This is accomplished by passing our PID to the updater so
// that it can wait for us to exit. This is not perfect as there is a race
// condition that could bite us. It's possible that the calling process could
// exit before the updater waits on the specified PID, and in the meantime a
// new process with the same PID could be created. This situation is unlikely,
// however, given the way most operating systems recycle PIDs. We'll take our
// chances ;-)
// Construct the PID argument for this process to pass to the updater.
nsAutoCString pid;
if (restart) {
#if defined(XP_UNIX) & !defined(XP_MACOSX)
// When execv is used for an update that requires a restart 0 is passed
// which is ignored by the updater.
pid.AssignASCII("0");
#else
pid.AppendInt((int32_t) getpid());
#endif
if (isStaged) {
// Append a special token to the PID in order to inform the updater that
// it should replace install with the updated directory.
pid.AppendLiteral("/replace");
}
} else {
// Signal the updater application that it should stage the update.
pid.AssignASCII("-1");
}
int argc = 5;
if (restart) {
argc = appArgc + 6;
}
char **argv = new char*[argc + 1];
if (!argv) {
return;
}
argv[0] = (char*) updaterPath.get();
argv[1] = (char*) updateDirPath.get();
argv[2] = (char*) installDirPath.get();
argv[3] = (char*) applyToDirPath.get();
argv[4] = (char*) pid.get();
if (restart && appArgc) {
argv[5] = workingDirPath;
argv[6] = (char*) appFilePath.get();
for (int i = 1; i < appArgc; ++i) {
argv[6 + i] = appArgv[i];
}
argv[argc] = nullptr;
} else {
argv[5] = nullptr;
}
if (restart && gSafeMode) {
PR_SetEnv("MOZ_SAFE_MODE_RESTART=1");
}
#if defined(MOZ_VERIFY_MAR_SIGNATURE) && !defined(XP_WIN) && !defined(XP_MACOSX)
AppendToLibPath(installDirPath.get());
#endif
LOG(("spawning updater process [%s]\n", updaterPath.get()));
#if defined(XP_UNIX) && !defined(XP_MACOSX)
// We use execv to spawn the updater process on all UNIX systems except Mac OSX
// since it is known to cause problems on the Mac. Windows has execv, but it
// is a faked implementation that doesn't really replace the current process.
// Instead it spawns a new process, so we gain nothing from using execv on
// Windows.
if (restart) {
exit(execv(updaterPath.get(), argv));
}
*outpid = fork();
if (*outpid == -1) {
return;
} else if (*outpid == 0) {
exit(execv(updaterPath.get(), argv));
}
#elif defined(XP_WIN)
if (isStaged) {
// Launch the updater to replace the installation with the staged updated.
if (!WinLaunchChild(updaterPathW.get(), argc, argv)) {
return;
}
} else {
// Launch the updater to either stage or apply an update.
if (!WinLaunchChild(updaterPathW.get(), argc, argv, nullptr, outpid)) {
return;
}
}
#elif defined(XP_MACOSX)
UpdateDriverSetupMacCommandLine(argc, argv, restart);
// We need to detect whether elevation is required for this update. This can
// occur when an admin user installs the application, but another admin
// user attempts to update (see bug 394984).
if (restart && !IsRecursivelyWritable(installDirPath.get())) {
if (!LaunchElevatedUpdate(argc, argv, outpid)) {
LOG(("Failed to launch elevated update!"));
exit(1);
}
exit(0);
}
if (isStaged) {
// Launch the updater to replace the installation with the staged updated.
LaunchChildMac(argc, argv);
} else {
// Launch the updater to either stage or apply an update.
LaunchChildMac(argc, argv, outpid);
}
if (restart) {
exit(0);
}
#else
if (isStaged) {
// Launch the updater to replace the installation with the staged updated.
PR_CreateProcessDetached(updaterPath.get(), argv, nullptr, nullptr);
} else {
// Launch the updater to either stage or apply an update.
*outpid = PR_CreateProcess(updaterPath.get(), argv, nullptr, nullptr);
}
#endif
#if !defined(USE_EXECV)
if (restart) {
exit(0);
}
#endif
}
/**
* Wait briefly to see if a process terminates, then return true if it has.
*/
static bool
ProcessHasTerminated(ProcessType pt)
{
#if defined(XP_WIN)
if (WaitForSingleObject(pt, 1000)) {
return false;
}
CloseHandle(pt);
return true;
#elif defined(XP_MACOSX)
// We're waiting for the process to terminate in LaunchChildMac.
return true;
#elif defined(XP_UNIX)
int exitStatus;
pid_t exited = waitpid(pt, &exitStatus, WNOHANG);
if (exited == 0) {
// Process is still running.
sleep(1);
return false;
}
if (exited == -1) {
LOG(("Error while checking if the updater process is finished"));
// This shouldn't happen, but if it does, the updater process is lost to us,
// so the best we can do is pretend that it's exited.
return true;
}
// If we get here, the process has exited; make sure it exited normally.
if (WIFEXITED(exitStatus) && (WEXITSTATUS(exitStatus) != 0)) {
LOG(("Error while running the updater process, check update.log"));
}
return true;
#else
// No way to have a non-blocking implementation on these platforms,
// because we're using NSPR and it only provides a blocking wait.
int32_t exitCode;
PR_WaitProcess(pt, &exitCode);
if (exitCode != 0) {
LOG(("Error while running the updater process, check update.log"));
}
return true;
#endif
}
nsresult
ProcessUpdates(nsIFile *greDir, nsIFile *appDir, nsIFile *updRootDir,
int argc, char **argv, const char *appVersion,
bool restart, ProcessType *pid)
{
nsresult rv;
nsCOMPtr<nsIFile> updatesDir;
rv = updRootDir->Clone(getter_AddRefs(updatesDir));
if (NS_FAILED(rv)) {
return rv;
}
rv = updatesDir->AppendNative(NS_LITERAL_CSTRING("updates"));
if (NS_FAILED(rv)) {
return rv;
}
rv = updatesDir->AppendNative(NS_LITERAL_CSTRING("0"));
if (NS_FAILED(rv)) {
return rv;
}
// Return early since there isn't a valid update when the update application
// version file doesn't exist or if the update's application version is less
// than the current application version. The cleanup of the update will happen
// during post update processing in nsUpdateService.js.
nsCOMPtr<nsIFile> versionFile;
if (!GetVersionFile(updatesDir, versionFile) ||
IsOlderVersion(versionFile, appVersion)) {
return NS_OK;
}
nsCOMPtr<nsIFile> statusFile;
UpdateStatus status = GetUpdateStatus(updatesDir, statusFile);
switch (status) {
case ePendingElevate: {
if (NS_IsMainThread()) {
// Only do this if we're called from the main thread.
nsCOMPtr<nsIUpdatePrompt> up =
do_GetService("@mozilla.org/updates/update-prompt;1");
if (up) {
up->ShowUpdateElevationRequired();
}
break;
}
// Intentional fallthrough to ePendingUpdate and ePendingService.
MOZ_FALLTHROUGH;
}
case ePendingUpdate:
case ePendingService: {
ApplyUpdate(greDir, updatesDir, appDir, argc, argv, restart, false, pid);
break;
}
case eAppliedUpdate:
case eAppliedService:
// An update was staged and needs to be switched so the updated application
// is used.
ApplyUpdate(greDir, updatesDir, appDir, argc, argv, restart, true, pid);
break;
case eNoUpdateAction:
// We don't need to do any special processing here, we'll just continue to
// startup the application.
break;
}
return NS_OK;
}
NS_IMPL_ISUPPORTS(nsUpdateProcessor, nsIUpdateProcessor)
nsUpdateProcessor::nsUpdateProcessor()
: mUpdaterPID(0)
{
}
nsUpdateProcessor::~nsUpdateProcessor()
{
}
NS_IMETHODIMP
nsUpdateProcessor::ProcessUpdate(nsIUpdate* aUpdate)
{
nsresult rv;
nsCOMPtr<nsIProperties> ds =
do_GetService(NS_DIRECTORY_SERVICE_CONTRACTID, &rv);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIFile> exeFile;
rv = ds->Get(XRE_EXECUTABLE_FILE, NS_GET_IID(nsIFile),
getter_AddRefs(exeFile));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIFile> appDir;
rv = exeFile->GetParent(getter_AddRefs(appDir));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIFile> greDir;
rv = ds->Get(NS_GRE_DIR, NS_GET_IID(nsIFile), getter_AddRefs(greDir));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIFile> updRoot;
rv = ds->Get(XRE_UPDATE_ROOT_DIR, NS_GET_IID(nsIFile),
getter_AddRefs(updRoot));
NS_ASSERTION(NS_SUCCEEDED(rv), "Can't get the UpdRootD dir");
// XRE_UPDATE_ROOT_DIR should not fail but if it does fallback to the
// application directory just to be safe.
if (NS_FAILED(rv)) {
rv = appDir->Clone(getter_AddRefs(updRoot));
NS_ENSURE_SUCCESS(rv, rv);
}
nsCOMPtr<nsIXULAppInfo> appInfo =
do_GetService("@mozilla.org/xre/app-info;1", &rv);
NS_ENSURE_SUCCESS(rv, rv);
nsAutoCString appVersion;
rv = appInfo->GetVersion(appVersion);
NS_ENSURE_SUCCESS(rv, rv);
// Copy the parameters to the StagedUpdateInfo structure shared with the
// watcher thread.
mInfo.mGREDir = greDir;
mInfo.mAppDir = appDir;
mInfo.mUpdateRoot = updRoot;
mInfo.mArgc = 0;
mInfo.mArgv = nullptr;
mInfo.mAppVersion = appVersion;
MOZ_ASSERT(NS_IsMainThread(), "not main thread");
nsCOMPtr<nsIRunnable> r =
NewRunnableMethod("nsUpdateProcessor::StartStagedUpdate",
this,
&nsUpdateProcessor::StartStagedUpdate);
return NS_NewNamedThread("Update Watcher", getter_AddRefs(mProcessWatcher),
r);
}
void
nsUpdateProcessor::StartStagedUpdate()
{
MOZ_ASSERT(!NS_IsMainThread(), "main thread");
nsresult rv = ProcessUpdates(mInfo.mGREDir,
mInfo.mAppDir,
mInfo.mUpdateRoot,
mInfo.mArgc,
mInfo.mArgv,
mInfo.mAppVersion.get(),
false,
&mUpdaterPID);
NS_ENSURE_SUCCESS_VOID(rv);
if (mUpdaterPID) {
// Track the state of the updater process while it is staging an update.
rv = NS_DispatchToCurrentThread(
NewRunnableMethod("nsUpdateProcessor::WaitForProcess",
this,
&nsUpdateProcessor::WaitForProcess));
NS_ENSURE_SUCCESS_VOID(rv);
} else {
// Failed to launch the updater process for some reason.
// We need to shutdown the current thread as there isn't anything more for
// us to do...
rv = NS_DispatchToMainThread(
NewRunnableMethod("nsUpdateProcessor::ShutdownWatcherThread",
this,
&nsUpdateProcessor::ShutdownWatcherThread));
NS_ENSURE_SUCCESS_VOID(rv);
}
}
void
nsUpdateProcessor::ShutdownWatcherThread()
{
MOZ_ASSERT(NS_IsMainThread(), "not main thread");
mProcessWatcher->Shutdown();
mProcessWatcher = nullptr;
}
void
nsUpdateProcessor::WaitForProcess()
{
MOZ_ASSERT(!NS_IsMainThread(), "main thread");
if (ProcessHasTerminated(mUpdaterPID)) {
NS_DispatchToMainThread(NewRunnableMethod(
"nsUpdateProcessor::UpdateDone", this, &nsUpdateProcessor::UpdateDone));
} else {
NS_DispatchToCurrentThread(
NewRunnableMethod("nsUpdateProcessor::WaitForProcess",
this,
&nsUpdateProcessor::WaitForProcess));
}
}
void
nsUpdateProcessor::UpdateDone()
{
MOZ_ASSERT(NS_IsMainThread(), "not main thread");
nsCOMPtr<nsIUpdateManager> um =
do_GetService("@mozilla.org/updates/update-manager;1");
if (um) {
um->RefreshUpdateStatus();
}
ShutdownWatcherThread();
}