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gecko/browser/app/nsBrowserApp.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 "nsXULAppAPI.h"
#include "mozilla/AppData.h"
#include "application.ini.h"
#include "nsXPCOMGlue.h"
#if defined(XP_WIN)
#include <windows.h>
#include <stdlib.h>
#include <io.h>
#include <fcntl.h>
#elif defined(XP_UNIX)
#include <sys/resource.h>
#include <time.h>
#include <unistd.h>
#endif
#ifdef XP_MACOSX
#include <mach/mach_time.h>
#include "MacQuirks.h"
#endif
#include <stdio.h>
#include <stdarg.h>
#include <time.h>
#include "nsCOMPtr.h"
#include "nsIFile.h"
#include "nsStringGlue.h"
// Easy access to a five second startup delay used to get
// a debugger attached in the metro environment.
// #define DEBUG_delay_start_metro
#ifdef XP_WIN
// we want a wmain entry point
#include "nsWindowsWMain.cpp"
#define snprintf _snprintf
#define strcasecmp _stricmp
#endif
#include "BinaryPath.h"
#include "nsXPCOMPrivate.h" // for MAXPATHLEN and XPCOM_DLL
#include "mozilla/Telemetry.h"
#include "mozilla/WindowsDllBlocklist.h"
using namespace mozilla;
#ifdef XP_MACOSX
#define kOSXResourcesFolder "Resources"
#endif
#define kDesktopFolder "browser"
#define kMetroFolder "metro"
#define kMetroAppIniFilename "metroapp.ini"
#ifdef XP_WIN
#define kMetroTestFile "tests.ini"
const char* kMetroConsoleIdParam = "testconsoleid=";
#endif
static void Output(const char *fmt, ... )
{
va_list ap;
va_start(ap, fmt);
#ifndef XP_WIN
vfprintf(stderr, fmt, ap);
#else
char msg[2048];
vsnprintf_s(msg, _countof(msg), _TRUNCATE, fmt, ap);
wchar_t wide_msg[2048];
MultiByteToWideChar(CP_UTF8,
0,
msg,
-1,
wide_msg,
_countof(wide_msg));
#if MOZ_WINCONSOLE
fwprintf_s(stderr, wide_msg);
#else
// Linking user32 at load-time interferes with the DLL blocklist (bug 932100).
// This is a rare codepath, so we can load user32 at run-time instead.
HMODULE user32 = LoadLibraryW(L"user32.dll");
if (user32) {
decltype(MessageBoxW)* messageBoxW =
(decltype(MessageBoxW)*) GetProcAddress(user32, "MessageBoxW");
if (messageBoxW) {
messageBoxW(nullptr, wide_msg, L"Firefox", MB_OK
| MB_ICONERROR
| MB_SETFOREGROUND);
}
FreeLibrary(user32);
}
#endif
#endif
va_end(ap);
}
/**
* Return true if |arg| matches the given argument name.
*/
static bool IsArg(const char* arg, const char* s)
{
if (*arg == '-')
{
if (*++arg == '-')
++arg;
return !strcasecmp(arg, s);
}
#if defined(XP_WIN)
if (*arg == '/')
return !strcasecmp(++arg, s);
#endif
return false;
}
#ifdef XP_WIN
/*
* AttachToTestHarness - Windows helper for when we are running
* in the immersive environment. Firefox is launched by Windows in
* response to a request by metrotestharness, which is launched by
* runtests.py. As such stdout in fx doesn't point to the right
* stream. This helper touches up stdout such that test output gets
* routed to a named pipe metrotestharness creates and dumps to its
* stdout.
*/
static void AttachToTestHarness()
{
// attach to the metrotestharness named logging pipe
HANDLE winOut = CreateFileA("\\\\.\\pipe\\metrotestharness",
GENERIC_WRITE,
FILE_SHARE_WRITE, 0,
OPEN_EXISTING, 0, 0);
if (winOut == INVALID_HANDLE_VALUE) {
OutputDebugStringW(L"Could not create named logging pipe.\n");
return;
}
// Set the c runtime handle
int stdOut = _open_osfhandle((intptr_t)winOut, _O_APPEND);
if (stdOut == -1) {
OutputDebugStringW(L"Could not open c-runtime handle.\n");
return;
}
FILE *fp = _fdopen(stdOut, "a");
*stdout = *fp;
}
#endif
XRE_GetFileFromPathType XRE_GetFileFromPath;
XRE_CreateAppDataType XRE_CreateAppData;
XRE_FreeAppDataType XRE_FreeAppData;
XRE_TelemetryAccumulateType XRE_TelemetryAccumulate;
XRE_StartupTimelineRecordType XRE_StartupTimelineRecord;
XRE_mainType XRE_main;
XRE_StopLateWriteChecksType XRE_StopLateWriteChecks;
static const nsDynamicFunctionLoad kXULFuncs[] = {
{ "XRE_GetFileFromPath", (NSFuncPtr*) &XRE_GetFileFromPath },
{ "XRE_CreateAppData", (NSFuncPtr*) &XRE_CreateAppData },
{ "XRE_FreeAppData", (NSFuncPtr*) &XRE_FreeAppData },
{ "XRE_TelemetryAccumulate", (NSFuncPtr*) &XRE_TelemetryAccumulate },
{ "XRE_StartupTimelineRecord", (NSFuncPtr*) &XRE_StartupTimelineRecord },
{ "XRE_main", (NSFuncPtr*) &XRE_main },
{ "XRE_StopLateWriteChecks", (NSFuncPtr*) &XRE_StopLateWriteChecks },
{ nullptr, nullptr }
};
static int do_main(int argc, char* argv[], nsIFile *xreDirectory)
{
nsCOMPtr<nsIFile> appini;
nsresult rv;
uint32_t mainFlags = 0;
// Allow firefox.exe to launch XULRunner apps via -app <application.ini>
// Note that -app must be the *first* argument.
const char *appDataFile = getenv("XUL_APP_FILE");
if (appDataFile && *appDataFile) {
rv = XRE_GetFileFromPath(appDataFile, getter_AddRefs(appini));
if (NS_FAILED(rv)) {
Output("Invalid path found: '%s'", appDataFile);
return 255;
}
}
else if (argc > 1 && IsArg(argv[1], "app")) {
if (argc == 2) {
Output("Incorrect number of arguments passed to -app");
return 255;
}
rv = XRE_GetFileFromPath(argv[2], getter_AddRefs(appini));
if (NS_FAILED(rv)) {
Output("application.ini path not recognized: '%s'", argv[2]);
return 255;
}
char appEnv[MAXPATHLEN];
snprintf(appEnv, MAXPATHLEN, "XUL_APP_FILE=%s", argv[2]);
if (putenv(appEnv)) {
Output("Couldn't set %s.\n", appEnv);
return 255;
}
argv[2] = argv[0];
argv += 2;
argc -= 2;
}
if (appini) {
nsXREAppData *appData;
rv = XRE_CreateAppData(appini, &appData);
if (NS_FAILED(rv)) {
Output("Couldn't read application.ini");
return 255;
}
// xreDirectory already has a refcount from NS_NewLocalFile
appData->xreDirectory = xreDirectory;
int result = XRE_main(argc, argv, appData, mainFlags);
XRE_FreeAppData(appData);
return result;
}
bool metroOnDesktop = false;
#ifdef MOZ_METRO
if (argc > 1) {
// This command-line flag is passed to our executable when it is to be
// launched in metro mode (i.e. our EXE is registered as the default
// browser and the user has tapped our EXE's tile)
if (IsArg(argv[1], "ServerName:DefaultBrowserServer")) {
mainFlags = XRE_MAIN_FLAG_USE_METRO;
argv[1] = argv[0];
argv++;
argc--;
} else if (IsArg(argv[1], "BackgroundSessionClosed")) {
// This command line flag is used for indirect shutdowns, the OS
// relaunches Metro Firefox with this command line arg.
mainFlags = XRE_MAIN_FLAG_USE_METRO;
} else {
#ifndef RELEASE_BUILD
// This command-line flag is used to test the metro browser in a desktop
// environment.
for (int idx = 1; idx < argc; idx++) {
if (IsArg(argv[idx], "metrodesktop")) {
metroOnDesktop = true;
// Disable crash reporting when running in metrodesktop mode.
char crashSwitch[] = "MOZ_CRASHREPORTER_DISABLE=1";
putenv(crashSwitch);
break;
}
}
#endif
}
}
#endif
// Desktop browser launch
if (mainFlags != XRE_MAIN_FLAG_USE_METRO && !metroOnDesktop) {
ScopedAppData appData(&sAppData);
nsCOMPtr<nsIFile> exeFile;
rv = mozilla::BinaryPath::GetFile(argv[0], getter_AddRefs(exeFile));
if (NS_FAILED(rv)) {
Output("Couldn't find the application directory.\n");
return 255;
}
nsCOMPtr<nsIFile> greDir;
exeFile->GetParent(getter_AddRefs(greDir));
#ifdef XP_MACOSX
greDir->SetNativeLeafName(NS_LITERAL_CSTRING(kOSXResourcesFolder));
#endif
nsCOMPtr<nsIFile> appSubdir;
greDir->Clone(getter_AddRefs(appSubdir));
appSubdir->Append(NS_LITERAL_STRING(kDesktopFolder));
SetStrongPtr(appData.directory, static_cast<nsIFile*>(appSubdir.get()));
// xreDirectory already has a refcount from NS_NewLocalFile
appData.xreDirectory = xreDirectory;
return XRE_main(argc, argv, &appData, mainFlags);
}
// Metro browser launch
#ifdef MOZ_METRO
nsCOMPtr<nsIFile> iniFile, appSubdir;
xreDirectory->Clone(getter_AddRefs(iniFile));
xreDirectory->Clone(getter_AddRefs(appSubdir));
iniFile->Append(NS_LITERAL_STRING(kMetroFolder));
iniFile->Append(NS_LITERAL_STRING(kMetroAppIniFilename));
appSubdir->Append(NS_LITERAL_STRING(kMetroFolder));
nsAutoCString path;
if (NS_FAILED(iniFile->GetNativePath(path))) {
Output("Couldn't get ini file path.\n");
return 255;
}
nsXREAppData *appData;
rv = XRE_CreateAppData(iniFile, &appData);
if (NS_FAILED(rv) || !appData) {
Output("Couldn't read application.ini");
return 255;
}
SetStrongPtr(appData->directory, static_cast<nsIFile*>(appSubdir.get()));
// xreDirectory already has a refcount from NS_NewLocalFile
appData->xreDirectory = xreDirectory;
#ifdef XP_WIN
if (!metroOnDesktop) {
nsCOMPtr<nsIFile> testFile;
xreDirectory->Clone(getter_AddRefs(testFile));
testFile->Append(NS_LITERAL_STRING(kMetroTestFile));
nsAutoCString path;
if (NS_FAILED(testFile->GetNativePath(path))) {
Output("Couldn't get test file path.\n");
return 255;
}
// Check for a metro test harness command line args file
HANDLE hTestFile = CreateFileA(path.get(),
GENERIC_READ,
0, nullptr, OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL,
nullptr);
if (hTestFile != INVALID_HANDLE_VALUE) {
// Typical test harness command line args string is around 100 bytes.
char buffer[1024];
memset(buffer, 0, sizeof(buffer));
DWORD bytesRead = 0;
if (!ReadFile(hTestFile, (VOID*)buffer, sizeof(buffer)-1,
&bytesRead, nullptr) || !bytesRead) {
CloseHandle(hTestFile);
printf("failed to read test file '%s'", testFile);
return -1;
}
CloseHandle(hTestFile);
// Build new args array
char* newArgv[20];
int newArgc = 1;
memset(newArgv, 0, sizeof(newArgv));
char* ptr = buffer;
newArgv[0] = ptr;
while (*ptr != '\0' &&
(ptr - buffer) < sizeof(buffer) &&
newArgc < ARRAYSIZE(newArgv)) {
if (isspace(*ptr)) {
*ptr = '\0';
ptr++;
newArgv[newArgc] = ptr;
newArgc++;
continue;
}
ptr++;
}
if (ptr == newArgv[newArgc-1])
newArgc--;
// attach browser stdout to metrotestharness stdout
AttachToTestHarness();
int result = XRE_main(newArgc, newArgv, appData, mainFlags);
XRE_FreeAppData(appData);
return result;
}
}
#endif
int result = XRE_main(argc, argv, appData, mainFlags);
XRE_FreeAppData(appData);
return result;
#endif
NS_NOTREACHED("browser do_main failed to pickup proper initialization");
return 255;
}
#ifdef XP_WIN
/**
* Used only when GetTickCount64 is not available on the platform.
* Last result of GetTickCount call. Kept in [ms].
*/
static DWORD sLastGTCResult = 0;
/**
* Higher part of the 64-bit value of MozGetTickCount64,
* incremented atomically.
*/
static DWORD sLastGTCRollover = 0;
/**
* Function protecting GetTickCount result from rolling over. The original
* code comes from the Windows implementation of the TimeStamp class minus the
* locking harness which isn't needed here.
*
* @returns The current time in milliseconds
*/
static ULONGLONG WINAPI
MozGetTickCount64()
{
DWORD GTC = ::GetTickCount();
/* Pull the rollover counter forward only if new value of GTC goes way
* down under the last saved result */
if ((sLastGTCResult > GTC) && ((sLastGTCResult - GTC) > (1UL << 30)))
++sLastGTCRollover;
sLastGTCResult = GTC;
return (ULONGLONG)sLastGTCRollover << 32 | sLastGTCResult;
}
typedef ULONGLONG (WINAPI* GetTickCount64_t)();
static GetTickCount64_t sGetTickCount64 = nullptr;
#endif
/**
* Local TimeStamp::Now()-compatible implementation used to record timestamps
* which will be passed to XRE_StartupTimelineRecord().
*/
static uint64_t
TimeStamp_Now()
{
#ifdef XP_WIN
LARGE_INTEGER freq;
::QueryPerformanceFrequency(&freq);
HMODULE kernelDLL = GetModuleHandleW(L"kernel32.dll");
sGetTickCount64 = reinterpret_cast<GetTickCount64_t>
(GetProcAddress(kernelDLL, "GetTickCount64"));
if (!sGetTickCount64) {
/* If the platform does not support the GetTickCount64 (Windows XP doesn't),
* then use our fallback implementation based on GetTickCount. */
sGetTickCount64 = MozGetTickCount64;
}
return sGetTickCount64() * freq.QuadPart;
#elif defined(XP_MACOSX)
return mach_absolute_time();
#elif defined(HAVE_CLOCK_MONOTONIC)
struct timespec ts;
int rv = clock_gettime(CLOCK_MONOTONIC, &ts);
if (rv != 0) {
return 0;
}
uint64_t baseNs = (uint64_t)ts.tv_sec * 1000000000;
return baseNs + (uint64_t)ts.tv_nsec;
#endif
}
static bool
FileExists(const char *path)
{
#ifdef XP_WIN
wchar_t wideDir[MAX_PATH];
MultiByteToWideChar(CP_UTF8, 0, path, -1, wideDir, MAX_PATH);
DWORD fileAttrs = GetFileAttributesW(wideDir);
return fileAttrs != INVALID_FILE_ATTRIBUTES;
#else
return access(path, R_OK) == 0;
#endif
}
#ifdef LIBXUL_SDK
# define XPCOM_PATH "xulrunner" XPCOM_FILE_PATH_SEPARATOR XPCOM_DLL
#else
# define XPCOM_PATH XPCOM_DLL
#endif
static nsresult
InitXPCOMGlue(const char *argv0, nsIFile **xreDirectory)
{
char exePath[MAXPATHLEN];
nsresult rv = mozilla::BinaryPath::Get(argv0, exePath);
if (NS_FAILED(rv)) {
Output("Couldn't find the application directory.\n");
return rv;
}
char *lastSlash = strrchr(exePath, XPCOM_FILE_PATH_SEPARATOR[0]);
if (!lastSlash || (size_t(lastSlash - exePath) > MAXPATHLEN - sizeof(XPCOM_PATH) - 1))
return NS_ERROR_FAILURE;
strcpy(lastSlash + 1, XPCOM_PATH);
lastSlash += sizeof(XPCOM_PATH) - sizeof(XPCOM_DLL);
if (!FileExists(exePath)) {
#if defined(LIBXUL_SDK) && defined(XP_MACOSX)
// Check for <bundle>/Contents/Frameworks/XUL.framework/libxpcom.dylib
bool greFound = false;
CFBundleRef appBundle = CFBundleGetMainBundle();
if (!appBundle)
return NS_ERROR_FAILURE;
CFURLRef fwurl = CFBundleCopyPrivateFrameworksURL(appBundle);
CFURLRef absfwurl = nullptr;
if (fwurl) {
absfwurl = CFURLCopyAbsoluteURL(fwurl);
CFRelease(fwurl);
}
if (absfwurl) {
CFURLRef xulurl =
CFURLCreateCopyAppendingPathComponent(nullptr, absfwurl,
CFSTR("XUL.framework"),
true);
if (xulurl) {
CFURLRef xpcomurl =
CFURLCreateCopyAppendingPathComponent(nullptr, xulurl,
CFSTR("libxpcom.dylib"),
false);
if (xpcomurl) {
if (CFURLGetFileSystemRepresentation(xpcomurl, true,
(UInt8*) exePath,
sizeof(exePath)) &&
access(tbuffer, R_OK | X_OK) == 0) {
if (realpath(tbuffer, exePath)) {
greFound = true;
}
}
CFRelease(xpcomurl);
}
CFRelease(xulurl);
}
CFRelease(absfwurl);
}
}
if (!greFound) {
#endif
Output("Could not find the Mozilla runtime.\n");
return NS_ERROR_FAILURE;
}
// We do this because of data in bug 771745
XPCOMGlueEnablePreload();
rv = XPCOMGlueStartup(exePath);
if (NS_FAILED(rv)) {
Output("Couldn't load XPCOM.\n");
return rv;
}
rv = XPCOMGlueLoadXULFunctions(kXULFuncs);
if (NS_FAILED(rv)) {
Output("Couldn't load XRE functions.\n");
return rv;
}
NS_LogInit();
// chop XPCOM_DLL off exePath
*lastSlash = '\0';
#ifdef XP_MACOSX
lastSlash = strrchr(exePath, XPCOM_FILE_PATH_SEPARATOR[0]);
strcpy(lastSlash + 1, kOSXResourcesFolder);
#endif
#ifdef XP_WIN
rv = NS_NewLocalFile(NS_ConvertUTF8toUTF16(exePath), false,
xreDirectory);
#else
rv = NS_NewNativeLocalFile(nsDependentCString(exePath), false,
xreDirectory);
#endif
return rv;
}
int main(int argc, char* argv[])
{
#ifdef DEBUG_delay_start_metro
Sleep(5000);
#endif
uint64_t start = TimeStamp_Now();
#ifdef XP_MACOSX
TriggerQuirks();
#endif
int gotCounters;
#if defined(XP_UNIX)
struct rusage initialRUsage;
gotCounters = !getrusage(RUSAGE_SELF, &initialRUsage);
#elif defined(XP_WIN)
IO_COUNTERS ioCounters;
gotCounters = GetProcessIoCounters(GetCurrentProcess(), &ioCounters);
#endif
nsIFile *xreDirectory;
#ifdef HAS_DLL_BLOCKLIST
DllBlocklist_Initialize();
#ifdef DEBUG
// In order to be effective against AppInit DLLs, the blocklist must be
// initialized before user32.dll is loaded into the process (bug 932100).
if (GetModuleHandleA("user32.dll")) {
fprintf(stderr, "DLL blocklist was unable to intercept AppInit DLLs.\n");
}
#endif
#endif
nsresult rv = InitXPCOMGlue(argv[0], &xreDirectory);
if (NS_FAILED(rv)) {
return 255;
}
XRE_StartupTimelineRecord(mozilla::StartupTimeline::START, start);
if (gotCounters) {
#if defined(XP_WIN)
XRE_TelemetryAccumulate(mozilla::Telemetry::EARLY_GLUESTARTUP_READ_OPS,
int(ioCounters.ReadOperationCount));
XRE_TelemetryAccumulate(mozilla::Telemetry::EARLY_GLUESTARTUP_READ_TRANSFER,
int(ioCounters.ReadTransferCount / 1024));
IO_COUNTERS newIoCounters;
if (GetProcessIoCounters(GetCurrentProcess(), &newIoCounters)) {
XRE_TelemetryAccumulate(mozilla::Telemetry::GLUESTARTUP_READ_OPS,
int(newIoCounters.ReadOperationCount - ioCounters.ReadOperationCount));
XRE_TelemetryAccumulate(mozilla::Telemetry::GLUESTARTUP_READ_TRANSFER,
int((newIoCounters.ReadTransferCount - ioCounters.ReadTransferCount) / 1024));
}
#elif defined(XP_UNIX)
XRE_TelemetryAccumulate(mozilla::Telemetry::EARLY_GLUESTARTUP_HARD_FAULTS,
int(initialRUsage.ru_majflt));
struct rusage newRUsage;
if (!getrusage(RUSAGE_SELF, &newRUsage)) {
XRE_TelemetryAccumulate(mozilla::Telemetry::GLUESTARTUP_HARD_FAULTS,
int(newRUsage.ru_majflt - initialRUsage.ru_majflt));
}
#endif
}
int result = do_main(argc, argv, xreDirectory);
NS_LogTerm();
#ifdef XP_MACOSX
// Allow writes again. While we would like to catch writes from static
// destructors to allow early exits to use _exit, we know that there is
// at least one such write that we don't control (see bug 826029). For
// now we enable writes again and early exits will have to use exit instead
// of _exit.
XRE_StopLateWriteChecks();
#endif
return result;
}
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