tenfourfox/webapprt/win/webapprt.cpp
Cameron Kaiser c9b2922b70 hello FPR
2017-04-19 00:56:45 -07:00

530 lines
15 KiB
C++

/* -*- 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/. */
// System headers (alphabetical)
#include <fcntl.h>
#include <io.h>
#include <share.h>
#include <sys/stat.h>
#include <windows.h>
// Mozilla headers (alphabetical)
#include "nsIFile.h"
#include "nsINIParser.h"
#include "nsWindowsWMain.cpp" // we want a wmain entry point
#include "nsXPCOMGlue.h"
#include "nsXPCOMPrivate.h" // for MAXPATHLEN and XPCOM_DLL
#include "nsXULAppAPI.h"
#include "mozilla/AppData.h"
using namespace mozilla;
XRE_GetFileFromPathType XRE_GetFileFromPath;
XRE_CreateAppDataType XRE_CreateAppData;
XRE_FreeAppDataType XRE_FreeAppData;
XRE_mainType XRE_main;
namespace {
const char kAPP_INI[] = "application.ini";
const char kWEBAPP_INI[] = "webapp.ini";
const char kWEBAPPRT_INI[] = "webapprt.ini";
const char kWEBAPPRT_PATH[] = "webapprt";
const char kAPP_ENV_PREFIX[] = "XUL_APP_FILE=";
const char kAPP_RT[] = "webapprt-stub.exe";
const wchar_t kAPP_RT_BACKUP[] = L"webapprt.old";
wchar_t curExePath[MAXPATHLEN];
wchar_t backupFilePath[MAXPATHLEN];
wchar_t iconPath[MAXPATHLEN];
char profile[MAXPATHLEN];
bool isProfileOverridden = false;
int* pargc;
char*** pargv;
nsresult
joinPath(char* const dest,
char const* const dir,
char const* const leaf,
size_t bufferSize)
{
size_t dirLen = strlen(dir);
size_t leafLen = strlen(leaf);
bool needsSeparator = (dirLen != 0
&& dir[dirLen-1] != '\\'
&& leafLen != 0
&& leaf[0] != '\\');
if (dirLen + (needsSeparator? 1 : 0) + leafLen >= bufferSize) {
return NS_ERROR_FAILURE;
}
strncpy(dest, dir, bufferSize);
char* destEnd = dest + dirLen;
if (needsSeparator) {
*(destEnd++) = '\\';
}
strncpy(destEnd, leaf, leafLen);
return NS_OK;
}
/**
* A helper class which calls NS_LogInit/NS_LogTerm in its scope.
*/
class ScopedLogging
{
public:
ScopedLogging() { NS_LogInit(); }
~ScopedLogging() { NS_LogTerm(); }
};
/**
* A helper class for scope-guarding nsXREAppData.
*/
class ScopedXREAppData
{
public:
ScopedXREAppData()
: mAppData(nullptr) { }
nsresult
create(nsIFile* aINIFile)
{
return XRE_CreateAppData(aINIFile, &mAppData);
}
~ScopedXREAppData()
{
if (nullptr != mAppData) {
XRE_FreeAppData(mAppData);
}
}
nsXREAppData* const
operator->()
{
return get();
}
nsXREAppData
operator*()
{
return *get();
}
operator
nsXREAppData*()
{
return get();
}
private:
nsXREAppData* mAppData;
nsXREAppData* const get() { return mAppData; }
};
void
Output(const wchar_t *fmt, ... )
{
va_list ap;
va_start(ap, fmt);
wchar_t msg[1024];
_vsnwprintf_s(msg, _countof(msg), _countof(msg), fmt, ap);
MessageBoxW(nullptr, msg, L"Web Runtime", MB_OK);
va_end(ap);
}
void
Output(const char *fmt, ... )
{
va_list ap;
va_start(ap, fmt);
char msg[1024];
vsnprintf(msg, sizeof(msg), fmt, ap);
wchar_t wide_msg[1024];
MultiByteToWideChar(CP_UTF8,
0,
msg,
-1,
wide_msg,
_countof(wide_msg));
Output(wide_msg);
va_end(ap);
}
const nsDynamicFunctionLoad kXULFuncs[] = {
{ "XRE_GetFileFromPath", (NSFuncPtr*) &XRE_GetFileFromPath },
{ "XRE_CreateAppData", (NSFuncPtr*) &XRE_CreateAppData },
{ "XRE_FreeAppData", (NSFuncPtr*) &XRE_FreeAppData },
{ "XRE_main", (NSFuncPtr*) &XRE_main },
{ nullptr, nullptr }
};
bool
AttemptCopyAndLaunch(wchar_t* src)
{
// Rename the old app executable
if (FALSE == ::MoveFileExW(curExePath,
backupFilePath,
MOVEFILE_REPLACE_EXISTING)) {
return false;
}
// Copy webapprt-stub.exe from the Firefox dir to the app's dir
if (FALSE == ::CopyFileW(src,
curExePath,
TRUE)) {
// Try to move the old file back to its original location
::MoveFileW(backupFilePath,
curExePath);
return false;
}
// XXX: We will soon embed the app's icon in the EXE here
STARTUPINFOW si;
PROCESS_INFORMATION pi;
::ZeroMemory(&si, sizeof(si));
si.cb = sizeof(si);
::ZeroMemory(&pi, sizeof(pi));
if (!CreateProcessW(curExePath, // Module name
nullptr, // Command line
nullptr, // Process handle not inheritable
nullptr, // Thread handle not inheritable
FALSE, // Set handle inheritance to FALSE
0, // No creation flags
nullptr, // Use parent's environment block
nullptr, // Use parent's starting directory
&si,
&pi)) {
return false;
}
// Close process and thread handles.
CloseHandle( pi.hProcess );
CloseHandle( pi.hThread );
return true;
}
bool
AttemptCopyAndLaunch(char* srcUtf8)
{
wchar_t src[MAXPATHLEN];
if (0 == MultiByteToWideChar(CP_UTF8,
0,
srcUtf8,
-1,
src,
MAXPATHLEN)) {
return false;
}
return AttemptCopyAndLaunch(src);
}
bool
AttemptGRELoadAndLaunch(char* greDir)
{
nsresult rv;
char xpcomDllPath[MAXPATHLEN];
rv = joinPath(xpcomDllPath, greDir, XPCOM_DLL, MAXPATHLEN);
NS_ENSURE_SUCCESS(rv, false);
rv = XPCOMGlueStartup(xpcomDllPath);
NS_ENSURE_SUCCESS(rv, false);
rv = XPCOMGlueLoadXULFunctions(kXULFuncs);
NS_ENSURE_SUCCESS(rv, false);
// NOTE: The GRE has successfully loaded, so we can use XPCOM now
{ // Scope for any XPCOM stuff we create
ScopedLogging log;
// Get the path to the runtime.
char rtPath[MAXPATHLEN];
rv = joinPath(rtPath, greDir, kWEBAPPRT_PATH, MAXPATHLEN);
NS_ENSURE_SUCCESS(rv, false);
// Get the path to the runtime's INI file.
char rtIniPath[MAXPATHLEN];
rv = joinPath(rtIniPath, rtPath, kWEBAPPRT_INI, MAXPATHLEN);
NS_ENSURE_SUCCESS(rv, false);
// Load the runtime's INI from its path.
nsCOMPtr<nsIFile> rtINI;
rv = XRE_GetFileFromPath(rtIniPath, getter_AddRefs(rtINI));
NS_ENSURE_SUCCESS(rv, false);
bool exists;
rv = rtINI->Exists(&exists);
if (NS_FAILED(rv) || !exists)
return false;
ScopedXREAppData webShellAppData;
rv = webShellAppData.create(rtINI);
NS_ENSURE_SUCCESS(rv, false);
if (!isProfileOverridden) {
SetAllocatedString(webShellAppData->profile, profile);
SetAllocatedString(webShellAppData->name, profile);
}
nsCOMPtr<nsIFile> directory;
rv = XRE_GetFileFromPath(rtPath, getter_AddRefs(directory));
NS_ENSURE_SUCCESS(rv, false);
nsCOMPtr<nsIFile> xreDir;
rv = XRE_GetFileFromPath(greDir, getter_AddRefs(xreDir));
NS_ENSURE_SUCCESS(rv, false);
xreDir.forget(&webShellAppData->xreDirectory);
NS_IF_RELEASE(webShellAppData->directory);
directory.forget(&webShellAppData->directory);
// There is only XUL.
XRE_main(*pargc, *pargv, webShellAppData, 0);
}
return true;
}
bool
AttemptLoadFromDir(char* firefoxDir)
{
nsresult rv;
// Here we're going to open Firefox's application.ini
char appIniPath[MAXPATHLEN];
rv = joinPath(appIniPath, firefoxDir, kAPP_INI, MAXPATHLEN);
NS_ENSURE_SUCCESS(rv, false);
nsINIParser parser;
rv = parser.Init(appIniPath);
NS_ENSURE_SUCCESS(rv, false);
// Get buildid of FF we're trying to load
char buildid[MAXPATHLEN]; // This isn't a path, so MAXPATHLEN doesn't
// necessarily make sense, but it's a
// convenient number to use.
rv = parser.GetString("App",
"BuildID",
buildid,
MAXPATHLEN);
NS_ENSURE_SUCCESS(rv, false);
if (0 == strcmp(buildid, NS_STRINGIFY(GRE_BUILDID))) {
return AttemptGRELoadAndLaunch(firefoxDir);
}
char webAppRTExe[MAXPATHLEN];
rv = joinPath(webAppRTExe, firefoxDir, kAPP_RT, MAXPATHLEN);
NS_ENSURE_SUCCESS(rv, false);
return AttemptCopyAndLaunch(webAppRTExe);
}
bool
GetFirefoxDirFromRegistry(char* firefoxDir)
{
HKEY key;
wchar_t wideGreDir[MAXPATHLEN];
if (ERROR_SUCCESS !=
RegOpenKeyExW(HKEY_LOCAL_MACHINE,
L"SOFTWARE\\Microsoft\\Windows"
L"\\CurrentVersion\\App paths\\firefox.exe",
0,
KEY_READ,
&key)) {
return false;
}
DWORD length = MAXPATHLEN * sizeof(wchar_t);
// XXX: When Vista/XP64 become our minimum supported client, we can use
// RegGetValue instead
if (ERROR_SUCCESS != RegQueryValueExW(key,
L"Path",
nullptr,
nullptr,
reinterpret_cast<BYTE*>(wideGreDir),
&length)) {
RegCloseKey(key);
return false;
};
RegCloseKey(key);
// According to this article, we need to write our own null terminator:
// http://msdn.microsoft.com/en-us/library/ms724911%28v=vs.85%29.aspx
length = length / sizeof(wchar_t);
if (wideGreDir[length] != L'\0') {
if (length >= MAXPATHLEN) {
return false;
}
wideGreDir[length] = L'\0';
}
if (0 == WideCharToMultiByte(CP_UTF8,
0,
wideGreDir,
-1,
firefoxDir,
MAXPATHLEN,
nullptr,
nullptr)) {
return false;
}
return true;
}
};
//////////////////////////////////////////////////////////////////////////////
// main
//
// Note: XPCOM cannot be used until AttemptGRELoad has returned successfully.
int
main(int argc, char* argv[])
{
pargc = &argc;
pargv = &argv;
nsresult rv;
char buffer[MAXPATHLEN];
wchar_t wbuffer[MAXPATHLEN];
// Set up curEXEPath
if (!GetModuleFileNameW(0, wbuffer, MAXPATHLEN)) {
Output("Couldn't calculate the application directory.");
return 255;
}
wcsncpy(curExePath, wbuffer, MAXPATHLEN);
// Get the current directory into wbuffer
wchar_t* lastSlash = wcsrchr(wbuffer, L'\\');
if (!lastSlash) {
Output("Application directory format not understood.");
return 255;
}
*(++lastSlash) = L'\0';
// Set up backup file path
if (wcslen(wbuffer) + _countof(kAPP_RT_BACKUP) >= MAXPATHLEN) {
Output("Application directory path is too long (couldn't set up backup file path).");
}
wcsncpy(lastSlash, kAPP_RT_BACKUP, _countof(kAPP_RT_BACKUP));
wcsncpy(backupFilePath, wbuffer, MAXPATHLEN);
*lastSlash = L'\0';
// Convert current directory to utf8 and stuff it in buffer
if (0 == WideCharToMultiByte(CP_UTF8,
0,
wbuffer,
-1,
buffer,
MAXPATHLEN,
nullptr,
nullptr)) {
Output("Application directory could not be processed.");
return 255;
}
// Check if the runtime was executed with the "--profile" argument
for (int i = 1; i < argc; i++) {
if (!strcmp(argv[i], "-profile") ||
!strcmp(argv[i], "--profile") ||
!strcmp(argv[i], "/profile")) {
isProfileOverridden = true;
break;
}
}
// First attempt at loading Firefox binaries:
// Check if the webapprt is in the same directory as the Firefox binary.
// This is the case during WebappRT chrome and content tests.
if (AttemptLoadFromDir(buffer)) {
return 0;
}
// Set up appIniPath with path to webapp.ini.
// This should be in the same directory as the running executable.
char appIniPath[MAXPATHLEN];
if (NS_FAILED(joinPath(appIniPath, buffer, kWEBAPP_INI, MAXPATHLEN))) {
Output("Path to webapp.ini could not be processed.");
return 255;
}
// Open webapp.ini as an INI file (as opposed to using the
// XRE webapp.ini-specific processing we do later)
nsINIParser parser;
if (NS_FAILED(parser.Init(appIniPath))) {
Output("Could not open webapp.ini");
return 255;
}
// Set up our environment to know where webapp.ini was loaded from.
char appEnv[MAXPATHLEN + _countof(kAPP_ENV_PREFIX)];
strcpy(appEnv, kAPP_ENV_PREFIX);
strcpy(appEnv + _countof(kAPP_ENV_PREFIX) - 1, appIniPath);
if (putenv(appEnv)) {
Output("Couldn't set up app environment");
return 255;
}
if (!isProfileOverridden) {
// Get profile dir from webapp.ini
if (NS_FAILED(parser.GetString("Webapp",
"Profile",
profile,
MAXPATHLEN))) {
Output("Unable to retrieve profile from web app INI file");
return 255;
}
}
char firefoxDir[MAXPATHLEN];
// Second attempt at loading Firefox binaries:
// Get the location of Firefox from our webapp.ini
// XXX: This string better be UTF-8...
rv = parser.GetString("WebappRT",
"InstallDir",
firefoxDir,
MAXPATHLEN);
if (NS_SUCCEEDED(rv)) {
if (AttemptLoadFromDir(firefoxDir)) {
return 0;
}
}
// Third attempt at loading Firefox binaries:
// Get the location of Firefox from the registry
if (GetFirefoxDirFromRegistry(firefoxDir)) {
if (AttemptLoadFromDir(firefoxDir)) {
// XXX: Write gre dir location to webapp.ini
return 0;
}
}
// We've done all we know how to do to try to find and launch FF
Output("This app requires that Firefox version 16 or above is installed."
" Firefox 16+ has not been detected.");
return 255;
}