gecko/toolkit/xre/nsUpdateDriver.cpp
Ehsan Akhgari ab9253304f Bug 307181 - Stage Firefox updates in the background after they're downloaded, and replace the application directory on restart; r=rstrong,bbondy
When Firefox downloads an update, it previously kept the update around to apply
it on the next restart.  This patch changes this so that the updater program
is launched in the background as soon as the update has finished downloading
in order to stage the updated version of the application by copying the
existing installation directory to a temporary location and applying the update
on top of it, and replace the existing installation directory with the staged
directory on the next restart.

Because the replacing step is typically very fast, this patch eliminates the
wait for the update to be applied on restart, making it unnecessary to show a
progress dialog when restarting.

--HG--
rename : toolkit/mozapps/update/test/chrome/test_0092_finishedBackground.xul => toolkit/mozapps/update/test/chrome/test_0093_stagedBackground.xul
rename : toolkit/mozapps/update/test/unit/test_0110_general.js => toolkit/mozapps/update/test/unit/test_0113_general.js
rename : toolkit/mozapps/update/test/unit/test_0111_general.js => toolkit/mozapps/update/test/unit/test_0114_general.js
rename : toolkit/mozapps/update/test/unit/test_0112_general.js => toolkit/mozapps/update/test/unit/test_0115_general.js
rename : toolkit/mozapps/update/test/unit/test_0170_fileLocked_xp_win_complete.js => toolkit/mozapps/update/test/unit/test_0172_fileLocked_xp_win_complete.js
rename : toolkit/mozapps/update/test/unit/test_0171_fileLocked_xp_win_partial.js => toolkit/mozapps/update/test/unit/test_0173_fileLocked_xp_win_partial.js
rename : toolkit/mozapps/update/test/unit/test_0110_general.js => toolkit/mozapps/update/test_svc/unit/test_0113_general_svc.js
rename : toolkit/mozapps/update/test/unit/test_0111_general.js => toolkit/mozapps/update/test_svc/unit/test_0114_general_svc.js
rename : toolkit/mozapps/update/test/unit/test_0112_general.js => toolkit/mozapps/update/test_svc/unit/test_0115_general_svc.js
rename : toolkit/mozapps/update/test/unit/test_0170_fileLocked_xp_win_complete.js => toolkit/mozapps/update/test_svc/unit/test_0172_fileLocked_xp_win_complete_svc.js
rename : toolkit/mozapps/update/test/unit/test_0171_fileLocked_xp_win_partial.js => toolkit/mozapps/update/test_svc/unit/test_0173_fileLocked_xp_win_partial_svc.js
2012-05-22 10:50:04 -04:00

1022 lines
30 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 "nsILocalFile.h"
#include "nsCOMPtr.h"
#include "nsString.h"
#include "prproces.h"
#include "prlog.h"
#include "prenv.h"
#include "nsVersionComparator.h"
#include "nsXREDirProvider.h"
#include "SpecialSystemDirectory.h"
#include "nsDirectoryServiceDefs.h"
#include "nsThreadUtils.h"
#include "nsIXULAppInfo.h"
#include "mozilla/Preferences.h"
#ifdef XP_MACOSX
#include "nsILocalFileMac.h"
#include "nsCommandLineServiceMac.h"
#include "MacLaunchHelper.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_OS2)
# include <unistd.h>
# define INCL_DOSFILEMGR
# include <os2.h>
#elif defined(XP_UNIX)
# include <unistd.h>
#endif
//
// 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.
//
// 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 ;-)
//
// A similar #define lives in updater.cpp and should be kept in sync with this.
//
#if defined(XP_UNIX) && !defined(XP_MACOSX)
#define USE_EXECV
#endif
#ifdef PR_LOGGING
static PRLogModuleInfo *sUpdateLog = PR_NewLogModule("updatedriver");
#endif
#define LOG(args) PR_LOG(sUpdateLog, PR_LOG_DEBUG, args)
#ifdef XP_WIN
static const char kUpdaterBin[] = "updater.exe";
#else
static const char kUpdaterBin[] = "updater";
#endif
static const char kUpdaterINI[] = "updater.ini";
#ifdef XP_MACOSX
static const char kUpdaterApp[] = "updater.app";
#endif
#if defined(XP_UNIX) && !defined(XP_MACOSX)
static const char kUpdaterPNG[] = "updater.png";
#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_OS2)
if (DosQueryPathInfo( ".", FIL_QUERYFULLNAME, buf, size))
return NS_ERROR_FAILURE;
#elif 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;
}
#if defined(XP_MACOSX)
// This is a copy of OS X's XRE_GetBinaryPath from nsAppRunner.cpp with the
// gBinaryPath check removed so that the updater can reload the stub executable
// instead of xulrunner-bin. See bug 349737.
static nsresult
GetXULRunnerStubPath(const char* argv0, nsILocalFile* *aResult)
{
// Works even if we're not bundled.
CFBundleRef appBundle = ::CFBundleGetMainBundle();
if (!appBundle)
return NS_ERROR_FAILURE;
CFURLRef bundleURL = ::CFBundleCopyExecutableURL(appBundle);
if (!bundleURL)
return NS_ERROR_FAILURE;
nsCOMPtr<nsILocalFileMac> lfm;
nsresult rv = NS_NewLocalFileWithCFURL(bundleURL, true, getter_AddRefs(lfm));
::CFRelease(bundleURL);
if (NS_FAILED(rv))
return rv;
NS_ADDREF(*aResult = static_cast<nsILocalFile*>(lfm.get()));
return NS_OK;
}
#endif /* XP_MACOSX */
static bool
GetFile(nsIFile *dir, const nsCSubstring &name, nsCOMPtr<nsILocalFile> &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<nsILocalFile> &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(nsILocalFile *statusFile, char (&buf)[Size])
{
// The buffer needs to be large enough to hold the known status codes
PR_STATIC_ASSERT(Size > 16);
PRFileDesc *fd = nsnull;
nsresult rv = statusFile->OpenNSPRFileDesc(PR_RDONLY, 0660, &fd);
if (NS_FAILED(rv))
return false;
const PRInt32 n = PR_Read(fd, buf, Size);
PR_Close(fd);
return (n >= 0);
}
typedef enum {
eNoUpdateAction,
ePendingUpdate,
ePendingService,
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<nsILocalFile> &statusFile)
{
if (GetStatusFile(dir, statusFile)) {
char buf[32];
if (GetStatusFileContents(statusFile, buf)) {
const char kPending[] = "pending";
const char kPendingService[] = "pending-service";
const char kApplied[] = "applied";
const char kAppliedService[] = "applied-service";
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<nsILocalFile> &result)
{
return GetFile(dir, NS_LITERAL_CSTRING("update.version"), result);
}
// Compares the current application version with the update's application
// version.
static bool
IsOlderVersion(nsILocalFile *versionFile, const char *appVersion)
{
PRFileDesc *fd = nsnull;
nsresult rv = versionFile->OpenNSPRFileDesc(PR_RDONLY, 0660, &fd);
if (NS_FAILED(rv))
return true;
char buf[32];
const PRInt32 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 char *leafName, nsIFile *updateDir)
{
nsDependentCString leaf(leafName);
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(greDir, kUpdaterApp, updateDir))
return false;
#else
if (!CopyFileIntoUpdateDir(greDir, kUpdaterBin, updateDir))
return false;
#endif
CopyFileIntoUpdateDir(appDir, kUpdaterINI, updateDir);
#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, kUpdaterPNG, 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(kUpdaterApp));
rv |= updater->AppendNative(NS_LITERAL_CSTRING("Contents"));
rv |= updater->AppendNative(NS_LITERAL_CSTRING("MacOS"));
if (NS_FAILED(rv))
return false;
#endif
rv = updater->AppendNative(NS_LITERAL_CSTRING(kUpdaterBin));
return NS_SUCCEEDED(rv);
}
/**
* Switch an existing application directory to an updated version which has been
* previously constructed in the background.
*
* @param greDir the GRE dir
* @param updateDir the update root dir
* @param statusFile the update.status file
* @param appDir the app dir
* @param appArgc the number of args to the application
* @param appArgv the args to the application, used for restarting if needed
*/
static void
SwitchToUpdatedApp(nsIFile *greDir, nsIFile *updateDir, nsILocalFile *statusFile,
nsIFile *appDir, int appArgc, char **appArgv)
{
nsresult rv;
// Steps:
// - copy updater into temp dir
// - run updater with the correct arguments
nsCOMPtr<nsILocalFile> tmpDir;
GetSpecialSystemDirectory(OS_TemporaryDirectory,
getter_AddRefs(tmpDir));
if (!tmpDir) {
LOG(("failed getting a temp dir\n"));
return;
}
// Try to create our own new temp directory in case there is already an
// updater binary in the OS temporary location which we cannot write to.
// Note that we don't check for errors here, as if this directory can't
// be created, the following CopyUpdaterIntoUpdateDir call will fail.
tmpDir->Append(NS_LITERAL_STRING("MozUpdater"));
tmpDir->CreateUnique(nsIFile::DIRECTORY_TYPE, 0755);
nsCOMPtr<nsIFile> updater;
if (!CopyUpdaterIntoUpdateDir(greDir, appDir, tmpDir, updater)) {
LOG(("failed copying updater\n"));
return;
}
// We need to use the value returned from XRE_GetBinaryPath when attempting
// to restart the running application.
nsCOMPtr<nsILocalFile> appFile;
#if defined(XP_MACOSX)
// On OS X we need to pass the location of the xulrunner-stub executable
// rather than xulrunner-bin. See bug 349737.
GetXULRunnerStubPath(appArgv[0], getter_AddRefs(appFile));
#else
XRE_GetBinaryPath(appArgv[0], getter_AddRefs(appFile));
#endif
if (!appFile)
return;
#ifdef XP_WIN
nsAutoString appFilePathW;
rv = appFile->GetPath(appFilePathW);
if (NS_FAILED(rv))
return;
NS_ConvertUTF16toUTF8 appFilePath(appFilePathW);
nsAutoString updaterPathW;
rv = updater->GetPath(updaterPathW);
if (NS_FAILED(rv))
return;
NS_ConvertUTF16toUTF8 updaterPath(updaterPathW);
#else
nsCAutoString appFilePath;
rv = appFile->GetNativePath(appFilePath);
if (NS_FAILED(rv))
return;
nsCAutoString updaterPath;
rv = updater->GetNativePath(updaterPath);
if (NS_FAILED(rv))
return;
#endif
// Get the directory to which the update will be applied. On Mac OSX we need
// to apply the update to the Updated.app directory under the Foo.app
// directory which is the parent of the parent of the appDir. On other
// platforms we will just apply to the appDir/updated.
nsCOMPtr<nsILocalFile> updatedDir;
#if defined(XP_MACOSX)
nsCAutoString applyToDir;
{
nsCOMPtr<nsIFile> parentDir1, parentDir2;
rv = appDir->GetParent(getter_AddRefs(parentDir1));
if (NS_FAILED(rv))
return;
rv = parentDir1->GetParent(getter_AddRefs(parentDir2));
if (NS_FAILED(rv))
return;
if (!GetFile(parentDir2, NS_LITERAL_CSTRING("Updated.app"), updatedDir))
return;
rv = updatedDir->GetNativePath(applyToDir);
}
#else
if (!GetFile(appDir, NS_LITERAL_CSTRING("updated"), updatedDir))
return;
#if defined(XP_WIN)
nsAutoString applyToDirW;
rv = updatedDir->GetPath(applyToDirW);
NS_ConvertUTF16toUTF8 applyToDir(applyToDirW);
#else
nsCAutoString applyToDir;
rv = updatedDir->GetNativePath(applyToDir);
#endif
#endif
if (NS_FAILED(rv))
return;
// Make sure that the updated directory exists
bool updatedDirExists = false;
updatedDir->Exists(&updatedDirExists);
if (!updatedDirExists) {
return;
}
#if defined(XP_WIN)
nsAutoString updateDirPathW;
rv = updateDir->GetPath(updateDirPathW);
NS_ConvertUTF16toUTF8 updateDirPath(updateDirPathW);
#else
nsCAutoString updateDirPath;
rv = updateDir->GetNativePath(updateDirPath);
#endif
if (NS_FAILED(rv))
return;
// Get the current working directory.
char workingDirPath[MAXPATHLEN];
rv = GetCurrentWorkingDir(workingDirPath, sizeof(workingDirPath));
if (NS_FAILED(rv))
return;
// Construct the PID argument for this process. If we are using execv, then
// we pass "0" which is then ignored by the updater.
#if defined(USE_EXECV)
nsCAutoString pid("0");
#else
nsCAutoString pid;
pid.AppendInt((PRInt32) getpid());
#endif
// Append a special token to the PID in order to let the updater know that it
// just needs to replace the update directory.
pid.AppendASCII("/replace");
int argc = appArgc + 5;
char **argv = new char*[argc + 1];
if (!argv)
return;
argv[0] = (char*) updaterPath.get();
argv[1] = (char*) updateDirPath.get();
argv[2] = (char*) applyToDir.get();
argv[3] = (char*) pid.get();
if (appArgc) {
argv[4] = workingDirPath;
argv[5] = (char*) appFilePath.get();
for (int i = 1; i < appArgc; ++i)
argv[5 + i] = appArgv[i];
argc = 5 + appArgc;
argv[argc] = NULL;
} else {
argc = 4;
argv[4] = NULL;
}
if (gSafeMode) {
PR_SetEnv("MOZ_SAFE_MODE_RESTART=1");
}
LOG(("spawning updater process for replacing [%s]\n", updaterPath.get()));
#if defined(USE_EXECV)
execv(updaterPath.get(), argv);
#elif defined(XP_WIN)
// Switch the application using updater.exe
if (!WinLaunchChild(updaterPathW.get(), argc, argv)) {
return;
}
_exit(0);
#elif defined(XP_MACOSX)
CommandLineServiceMac::SetupMacCommandLine(argc, argv, true);
// LaunchChildMac uses posix_spawnp and prefers the current
// architecture when launching. It doesn't require a
// null-terminated string but it doesn't matter if we pass one.
LaunchChildMac(argc, argv);
exit(0);
#else
PR_CreateProcessDetached(updaterPath.get(), argv, NULL, NULL);
exit(0);
#endif
}
/**
* Apply an update, possibly in the background.
*
* @param greDir the GRE dir
* @param updateDir the update root dir
* @param statusFile the update.status file
* @param appDir the app dir
* @param appArgc the number of args to the application
* @param appArgv the args to the application, used for restarting if needed
* @param restart if true, apply the update in the foreground and restart the
* application when done. otherwise, apply the update in the
* background and don't restart the application.
* @param outpid out parameter holding the handle to the updater application for
* background updates.
*/
static void
ApplyUpdate(nsIFile *greDir, nsIFile *updateDir, nsILocalFile *statusFile,
nsIFile *appDir, int appArgc, char **appArgv, bool restart,
ProcessType *outpid)
{
nsresult rv;
// Steps:
// - mark update as 'applying'
// - copy updater into update dir
// - run updater w/ appDir as the current working dir
nsCOMPtr<nsIFile> updater;
if (!CopyUpdaterIntoUpdateDir(greDir, appDir, updateDir, updater)) {
LOG(("failed copying updater\n"));
return;
}
// We need to use the value returned from XRE_GetBinaryPath when attempting
// to restart the running application.
nsCOMPtr<nsILocalFile> appFile;
#if defined(XP_MACOSX)
// On OS X we need to pass the location of the xulrunner-stub executable
// rather than xulrunner-bin. See bug 349737.
GetXULRunnerStubPath(appArgv[0], getter_AddRefs(appFile));
#else
XRE_GetBinaryPath(appArgv[0], getter_AddRefs(appFile));
#endif
if (!appFile)
return;
#ifdef XP_WIN
nsAutoString appFilePathW;
rv = appFile->GetPath(appFilePathW);
if (NS_FAILED(rv))
return;
NS_ConvertUTF16toUTF8 appFilePath(appFilePathW);
nsAutoString updaterPathW;
rv = updater->GetPath(updaterPathW);
if (NS_FAILED(rv))
return;
NS_ConvertUTF16toUTF8 updaterPath(updaterPathW);
#else
nsCAutoString appFilePath;
rv = appFile->GetNativePath(appFilePath);
if (NS_FAILED(rv))
return;
nsCAutoString updaterPath;
rv = updater->GetNativePath(updaterPath);
if (NS_FAILED(rv))
return;
#endif
// Get the directory to which the update will be applied. On Mac OSX we need
// to apply the update to the Updated.app directory under the Foo.app
// directory which is the parent of the parent of the appDir. On other
// platforms we will just apply to the appDir/updated.
nsCOMPtr<nsILocalFile> updatedDir;
#if defined(XP_MACOSX)
nsCAutoString applyToDir;
{
nsCOMPtr<nsIFile> parentDir1, parentDir2;
rv = appDir->GetParent(getter_AddRefs(parentDir1));
if (NS_FAILED(rv))
return;
rv = parentDir1->GetParent(getter_AddRefs(parentDir2));
if (NS_FAILED(rv))
return;
if (restart) {
// Use the correct directory if we're not applying the update in the
// background.
rv = parentDir2->GetNativePath(applyToDir);
} else {
if (!GetFile(parentDir2, NS_LITERAL_CSTRING("Updated.app"), updatedDir))
return;
rv = updatedDir->GetNativePath(applyToDir);
}
}
#else
if (restart) {
// Use the correct directory if we're not applying the update in the
// background.
updatedDir = do_QueryInterface(appDir);
} else if (!GetFile(appDir, NS_LITERAL_CSTRING("updated"), updatedDir)) {
return;
}
#if defined(XP_WIN)
nsAutoString applyToDirW;
rv = updatedDir->GetPath(applyToDirW);
NS_ConvertUTF16toUTF8 applyToDir(applyToDirW);
#else
nsCAutoString applyToDir;
rv = updatedDir->GetNativePath(applyToDir);
#endif
#endif
if (NS_FAILED(rv))
return;
#if defined(XP_WIN)
nsAutoString updateDirPathW;
rv = updateDir->GetPath(updateDirPathW);
NS_ConvertUTF16toUTF8 updateDirPath(updateDirPathW);
#else
nsCAutoString updateDirPath;
rv = updateDir->GetNativePath(updateDirPath);
#endif
if (NS_FAILED(rv))
return;
// Get the current working directory.
char workingDirPath[MAXPATHLEN];
rv = GetCurrentWorkingDir(workingDirPath, sizeof(workingDirPath));
if (NS_FAILED(rv))
return;
// We used to write out "Applying" to the update.status file here.
// Instead we do this from within the updater application now.
// This is so that we don't overwrite the status of pending-service
// in the Windows case. This change was made for all platforms so
// that it stays consistent across all OS.
// Construct the PID argument for this process. If we are using execv, then
// we pass "0" which is then ignored by the updater.
nsCAutoString pid;
if (!restart) {
// Signal the updater application that it should apply the update in the
// background.
pid.AssignASCII("-1");
} else {
#if defined(USE_EXECV)
pid.AssignASCII("0");
#else
pid.AppendInt((PRInt32) getpid());
#endif
}
int argc = appArgc + 5;
char **argv = new char*[argc + 1];
if (!argv)
return;
argv[0] = (char*) updaterPath.get();
argv[1] = (char*) updateDirPath.get();
argv[2] = (char*) applyToDir.get();
argv[3] = (char*) pid.get();
if (restart && appArgc) {
argv[4] = workingDirPath;
argv[5] = (char*) appFilePath.get();
for (int i = 1; i < appArgc; ++i)
argv[5 + i] = appArgv[i];
argc = 5 + appArgc;
argv[argc] = NULL;
} else {
argc = 4;
argv[4] = NULL;
}
if (gSafeMode) {
PR_SetEnv("MOZ_SAFE_MODE_RESTART=1");
}
LOG(("spawning updater process [%s]\n", updaterPath.get()));
#if defined(USE_EXECV)
// Don't use execv for background updates.
if (restart) {
execv(updaterPath.get(), argv);
} else {
*outpid = PR_CreateProcess(updaterPath.get(), argv, NULL, NULL);
}
#elif defined(XP_WIN)
// Launch the update using updater.exe
if (!WinLaunchChild(updaterPathW.get(), argc, argv, NULL, outpid)) {
return;
}
if (restart) {
// We are going to process an update so we should exit now
_exit(0);
}
#elif defined(XP_MACOSX)
CommandLineServiceMac::SetupMacCommandLine(argc, argv, true);
// LaunchChildMac uses posix_spawnp and prefers the current
// architecture when launching. It doesn't require a
// null-terminated string but it doesn't matter if we pass one.
LaunchChildMac(argc, argv, 0, outpid);
if (restart) {
exit(0);
}
#else
*outpid = PR_CreateProcess(updaterPath.get(), argv, NULL, NULL);
if (restart) {
exit(0);
}
#endif
}
/**
* Wait for a process until it terminates. This call is blocking.
*/
static void
WaitForProcess(ProcessType pt)
{
#if defined(XP_WIN)
WaitForSingleObject(pt, INFINITE);
CloseHandle(pt);
#elif defined(XP_MACOSX)
waitpid(pt, 0, 0);
#else
PRInt32 exitCode;
PR_WaitProcess(pt, &exitCode);
#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;
ProcessType dummyPID; // this will only be used for MOZ_UPDATE_BACKGROUND
const char *processingUpdates = PR_GetEnv("MOZ_PROCESS_UPDATES");
if (processingUpdates && *processingUpdates) {
// Enable the tests to request us to use a different update root directory
const char *updRootOverride = PR_GetEnv("MOZ_UPDATE_ROOT_OVERRIDE");
if (updRootOverride && *updRootOverride) {
nsCOMPtr<nsILocalFile> overrideDir;
nsCAutoString path(updRootOverride);
rv = NS_NewNativeLocalFile(path, false, getter_AddRefs(overrideDir));
if (NS_FAILED(rv)) {
return rv;
}
updatesDir = do_QueryInterface(overrideDir);
}
// Enable the tests to request us to use a different app directory
const char *appDirOverride = PR_GetEnv("MOZ_UPDATE_APPDIR_OVERRIDE");
if (appDirOverride && *appDirOverride) {
nsCOMPtr<nsILocalFile> overrideDir;
nsCAutoString path(appDirOverride);
rv = NS_NewNativeLocalFile(path, false, getter_AddRefs(overrideDir));
if (NS_FAILED(rv)) {
return rv;
}
NS_ADDREF(appDir = overrideDir);
}
// Enable the tests to request us to perform a background update
const char *backgroundUpdate = PR_GetEnv("MOZ_UPDATE_BACKGROUND");
if (backgroundUpdate && *backgroundUpdate) {
restart = false;
pid = &dummyPID;
}
}
nsCOMPtr<nsILocalFile> statusFile;
UpdateStatus status = GetUpdateStatus(updatesDir, statusFile);
switch (status) {
case ePendingUpdate:
case ePendingService: {
nsCOMPtr<nsILocalFile> versionFile;
// Remove the update if the update application version file doesn't exist
// or if the update's application version is less than the current
// application version.
if (!GetVersionFile(updatesDir, versionFile) ||
IsOlderVersion(versionFile, appVersion)) {
updatesDir->Remove(true);
} else {
ApplyUpdate(greDir, updatesDir, statusFile,
appDir, argc, argv, restart, pid);
}
break;
}
case eAppliedUpdate:
case eAppliedService:
// An update was applied in the background, so we need to switch to using
// it now.
SwitchToUpdatedApp(greDir, updatesDir, statusFile,
appDir, argc, argv);
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_THREADSAFE_ISUPPORTS1(nsUpdateProcessor, nsIUpdateProcessor)
nsUpdateProcessor::nsUpdateProcessor()
: mUpdaterPID(0)
{
}
NS_IMETHODIMP
nsUpdateProcessor::ProcessUpdate(nsIUpdate* aUpdate)
{
nsCOMPtr<nsIFile> greDir, appDir, updRoot;
nsCAutoString appVersion;
int argc;
char **argv;
NS_ENSURE_ARG_POINTER(aUpdate);
nsXREDirProvider* dirProvider = nsXREDirProvider::GetSingleton();
if (dirProvider) { // Normal code path
// Check for and process any available updates
bool persistent;
nsresult rv = dirProvider->GetFile(XRE_UPDATE_ROOT_DIR, &persistent,
getter_AddRefs(updRoot));
// XRE_UPDATE_ROOT_DIR may fail. Fallback to appDir if failed
if (NS_FAILED(rv))
updRoot = dirProvider->GetAppDir();
greDir = dirProvider->GetGREDir();
appDir = dirProvider->GetAppDir();
appVersion = gAppData->version;
argc = gRestartArgc;
argv = gRestartArgv;
} else {
// In the xpcshell environment, the usual XRE_main is not run, so things
// like dirProvider and gAppData do not exist. This code path accesses
// XPCOM (which is not available in the previous code path) in order to get
// the same information.
nsCOMPtr<nsIProperties> ds =
do_GetService(NS_DIRECTORY_SERVICE_CONTRACTID);
if (!ds) {
NS_ABORT(); // There's nothing which we can do if this fails!
}
nsresult rv = ds->Get(NS_GRE_DIR, NS_GET_IID(nsIFile),
getter_AddRefs(greDir));
NS_ASSERTION(NS_SUCCEEDED(rv), "Can't get the GRE dir");
appDir = greDir;
rv = ds->Get(XRE_UPDATE_ROOT_DIR, NS_GET_IID(nsIFile),
getter_AddRefs(updRoot));
if (NS_FAILED(rv))
updRoot = appDir;
nsCOMPtr<nsIXULAppInfo> appInfo =
do_GetService("@mozilla.org/xre/app-info;1");
if (appInfo) {
rv = appInfo->GetVersion(appVersion);
NS_ENSURE_SUCCESS(rv, rv);
} else {
appVersion = MOZ_APP_VERSION;
}
// We need argv[0] to point to the current executable's name. The rest of
// the entries in this array will be ignored if argc<2. Therefore, for
// xpcshell, we only fill out that item, and leave the rest empty.
argc = 1;
nsCAutoString binPath;
nsCOMPtr<nsIFile> binary;
rv = ds->Get(XRE_EXECUTABLE_FILE, NS_GET_IID(nsIFile),
getter_AddRefs(binary));
NS_ASSERTION(NS_SUCCEEDED(rv), "Can't get the binary path");
binary->GetNativePath(binPath);
char* binPathCString = const_cast<char*> (nsPromiseFlatCString(binPath).get());
argv = &binPathCString;
}
// Copy the parameters to the BackgroundUpdateInfo structure shared with the
// watcher thread.
mInfo.mGREDir = greDir;
mInfo.mAppDir = appDir;
mInfo.mUpdateRoot = updRoot;
mInfo.mArgc = argc;
mInfo.mArgv = new char*[argc];
for (int i = 0; i < argc; ++i) {
const size_t length = strlen(argv[i]);
mInfo.mArgv[i] = new char[length + 1];
strcpy(mInfo.mArgv[i], argv[i]);
}
mInfo.mAppVersion = appVersion;
mUpdate = aUpdate;
NS_ABORT_IF_FALSE(NS_IsMainThread(), "not main thread");
return NS_NewThread(getter_AddRefs(mProcessWatcher),
NS_NewRunnableMethod(this, &nsUpdateProcessor::StartBackgroundUpdate));
}
void
nsUpdateProcessor::StartBackgroundUpdate()
{
NS_ABORT_IF_FALSE(!NS_IsMainThread(), "main thread");
nsresult rv = ProcessUpdates(mInfo.mGREDir,
mInfo.mAppDir,
mInfo.mUpdateRoot,
mInfo.mArgc,
mInfo.mArgv,
PromiseFlatCString(mInfo.mAppVersion).get(),
false,
&mUpdaterPID);
NS_ENSURE_SUCCESS(rv, );
if (mUpdaterPID) {
// Track the state of the background updater process
rv = NS_DispatchToCurrentThread(NS_NewRunnableMethod(this, &nsUpdateProcessor::WaitForProcess));
NS_ENSURE_SUCCESS(rv, );
} else {
// Failed to launch the background 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(NS_NewRunnableMethod(this, &nsUpdateProcessor::ShutdownWatcherThread));
NS_ENSURE_SUCCESS(rv, );
}
}
void
nsUpdateProcessor::ShutdownWatcherThread()
{
NS_ABORT_IF_FALSE(NS_IsMainThread(), "not main thread");
mProcessWatcher->Shutdown();
mProcessWatcher = nsnull;
mUpdate = nsnull;
}
void
nsUpdateProcessor::WaitForProcess()
{
NS_ABORT_IF_FALSE(!NS_IsMainThread(), "main thread");
::WaitForProcess(mUpdaterPID);
NS_DispatchToMainThread(NS_NewRunnableMethod(this, &nsUpdateProcessor::UpdateDone));
}
void
nsUpdateProcessor::UpdateDone()
{
NS_ABORT_IF_FALSE(NS_IsMainThread(), "not main thread");
nsCOMPtr<nsIUpdateManager> um =
do_GetService("@mozilla.org/updates/update-manager;1");
if (um) {
um->RefreshUpdateStatus(mUpdate);
}
ShutdownWatcherThread();
}