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appshell_extensions_win.cpp
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appshell_extensions_win.cpp
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/*
* Copyright (c) 2012 - present Adobe Systems Incorporated. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
*/
#include "appshell_extensions_platform.h"
#include "appshell/appshell_helpers.h"
#include "native_menu_model.h"
#include <algorithm>
#include <CommDlg.h>
#include <Psapi.h>
#include <ShellAPI.h>
#include <ShlObj.h>
#include <Shlwapi.h>
#include <Shobjidl.h>
#include <stdio.h>
#include <sys/stat.h>
#include <windows.h>
#include <intrin.h>
#include <iphlpapi.h>
#include "config.h"
#include <codecvt>
#define CLOSING_PROP L"CLOSING"
#define UNICODE_MINUS 0x2212
#define UNICODE_LEFT_ARROW 0x2190
#define UNICODE_DOWN_ARROW 0x2193
#define UTF8_BOM "\xEF\xBB\xBF"
// Forward declarations for functions at the bottom of this file
void ConvertToNativePath(ExtensionString& filename);
void ConvertToUnixPath(ExtensionString& filename);
void RemoveTrailingSlash(ExtensionString& filename);
int ConvertErrnoCode(int errorCode, bool isReading = true);
int ConvertWinErrorCode(int errorCode, bool isReading = true);
static std::wstring GetPathToLiveBrowser();
static bool ConvertToShortPathName(std::wstring & path);
time_t FiletimeToTime(FILETIME const& ft);
// Redraw timeout variables. See the comment above ScheduleMenuRedraw for details.
const DWORD kMenuRedrawTimeout = 100;
UINT_PTR redrawTimerId = NULL;
CefRefPtr<CefBrowser> redrawBrowser;
extern HINSTANCE hInst;
extern HACCEL hAccelTable;
extern std::wstring gFilesToOpen;
// constants
#define MAX_LOADSTRING 100
///////////////////////////////////////////////////////////////////////////////
// LiveBrowserMgrWin
class LiveBrowserMgrWin
{
public:
static LiveBrowserMgrWin* GetInstance();
static void Shutdown();
bool IsChromeWindow(HWND hwnd);
bool IsAnyChromeWindowsRunning();
void CloseLiveBrowserKillTimers();
void CloseLiveBrowserFireCallback(int valToSend);
static BOOL CALLBACK EnumChromeWindowsCallback(HWND hwnd, LPARAM userParam);
static void CALLBACK CloseLiveBrowserTimerCallback( HWND hwnd, UINT uMsg, UINT idEvent, DWORD dwTime);
static void CALLBACK CloseLiveBrowserAsyncCallback( HWND hwnd, UINT uMsg, ULONG_PTR dwData, LRESULT lResult );
CefRefPtr<CefProcessMessage> GetCloseCallback() { return m_closeLiveBrowserCallback; }
UINT GetCloseHeartbeatTimerId() { return m_closeLiveBrowserHeartbeatTimerId; }
UINT GetCloseTimeoutTimerId() { return m_closeLiveBrowserTimeoutTimerId; }
void SetCloseCallback(CefRefPtr<CefProcessMessage> closeLiveBrowserCallback)
{ m_closeLiveBrowserCallback = closeLiveBrowserCallback; }
void SetBrowser(CefRefPtr<CefBrowser> browser)
{ m_browser = browser; }
void SetCloseHeartbeatTimerId(UINT closeLiveBrowserHeartbeatTimerId)
{ m_closeLiveBrowserHeartbeatTimerId = closeLiveBrowserHeartbeatTimerId; }
void SetCloseTimeoutTimerId(UINT closeLiveBrowserTimeoutTimerId)
{ m_closeLiveBrowserTimeoutTimerId = closeLiveBrowserTimeoutTimerId; }
private:
// private so this class cannot be instantiated externally
LiveBrowserMgrWin();
virtual ~LiveBrowserMgrWin();
UINT m_closeLiveBrowserHeartbeatTimerId;
UINT m_closeLiveBrowserTimeoutTimerId;
CefRefPtr<CefProcessMessage> m_closeLiveBrowserCallback;
CefRefPtr<CefBrowser> m_browser;
static LiveBrowserMgrWin* s_instance;
};
LiveBrowserMgrWin::LiveBrowserMgrWin()
: m_closeLiveBrowserHeartbeatTimerId(0)
, m_closeLiveBrowserTimeoutTimerId(0)
{
}
LiveBrowserMgrWin::~LiveBrowserMgrWin()
{
}
LiveBrowserMgrWin* LiveBrowserMgrWin::GetInstance()
{
if (!s_instance)
s_instance = new LiveBrowserMgrWin();
return s_instance;
}
void LiveBrowserMgrWin::Shutdown()
{
delete s_instance;
s_instance = NULL;
}
bool LiveBrowserMgrWin::IsChromeWindow(HWND hwnd)
{
if( !hwnd ) {
return false;
}
//Find the path that opened this window
DWORD processId = 0;
::GetWindowThreadProcessId(hwnd, &processId);
HANDLE processHandle = ::OpenProcess( PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, processId);
if( !processHandle ) {
return false;
}
DWORD modulePathBufSize = MAX_UNC_PATH+1;
WCHAR modulePathBuf[MAX_UNC_PATH+1];
DWORD modulePathSize = ::GetModuleFileNameEx(processHandle, NULL, modulePathBuf, modulePathBufSize );
::CloseHandle(processHandle);
processHandle = NULL;
std::wstring modulePath(modulePathBuf, modulePathSize);
//See if this path is the same as what we want to launch
std::wstring appPath = GetPathToLiveBrowser();
if( !ConvertToShortPathName(modulePath) || !ConvertToShortPathName(appPath) ) {
return false;
}
if(0 != _wcsicmp(appPath.c_str(), modulePath.c_str()) ){
return false;
}
//looks good
return true;
}
struct EnumChromeWindowsCallbackData
{
bool closeWindow;
int numberOfFoundWindows;
};
BOOL CALLBACK LiveBrowserMgrWin::EnumChromeWindowsCallback(HWND hwnd, LPARAM userParam)
{
if( !hwnd || !s_instance) {
return FALSE;
}
EnumChromeWindowsCallbackData* cbData = reinterpret_cast<EnumChromeWindowsCallbackData*>(userParam);
if(!cbData) {
return FALSE;
}
if (!s_instance->IsChromeWindow(hwnd)) {
return TRUE;
}
cbData->numberOfFoundWindows++;
//This window belongs to the instance of the browser we're interested in, tell it to close
if( cbData->closeWindow ) {
::SendMessageCallback(hwnd, WM_CLOSE, NULL, NULL, CloseLiveBrowserAsyncCallback, NULL);
}
return TRUE;
}
bool LiveBrowserMgrWin::IsAnyChromeWindowsRunning()
{
EnumChromeWindowsCallbackData cbData = {0};
cbData.numberOfFoundWindows = 0;
cbData.closeWindow = false;
::EnumWindows(EnumChromeWindowsCallback, (LPARAM)&cbData);
return( cbData.numberOfFoundWindows != 0 );
}
void LiveBrowserMgrWin::CloseLiveBrowserKillTimers()
{
if (m_closeLiveBrowserHeartbeatTimerId) {
::KillTimer(NULL, m_closeLiveBrowserHeartbeatTimerId);
m_closeLiveBrowserHeartbeatTimerId = 0;
}
if (m_closeLiveBrowserTimeoutTimerId) {
::KillTimer(NULL, m_closeLiveBrowserTimeoutTimerId);
m_closeLiveBrowserTimeoutTimerId = 0;
}
}
void LiveBrowserMgrWin::CloseLiveBrowserFireCallback(int valToSend)
{
CefRefPtr<CefListValue> responseArgs = m_closeLiveBrowserCallback->GetArgumentList();
// kill the timers
CloseLiveBrowserKillTimers();
// Set common response args (callbackId and error)
responseArgs->SetInt(1, valToSend);
// Send response
m_browser->SendProcessMessage(PID_RENDERER, m_closeLiveBrowserCallback);
// Clear state
m_closeLiveBrowserCallback = NULL;
m_browser = NULL;
}
void CALLBACK LiveBrowserMgrWin::CloseLiveBrowserTimerCallback( HWND hwnd, UINT uMsg, UINT idEvent, DWORD dwTime)
{
if( !s_instance ) {
::KillTimer(NULL, idEvent);
return;
}
int retVal = NO_ERROR;
if( s_instance->IsAnyChromeWindowsRunning() )
{
retVal = ERR_UNKNOWN;
//if this is the heartbeat timer, wait for another beat
if (idEvent == s_instance->m_closeLiveBrowserHeartbeatTimerId) {
return;
}
}
//notify back to the app
s_instance->CloseLiveBrowserFireCallback(retVal);
}
void CALLBACK LiveBrowserMgrWin::CloseLiveBrowserAsyncCallback( HWND hwnd, UINT uMsg, ULONG_PTR dwData, LRESULT lResult )
{
if( !s_instance ) {
return;
}
//If there are no more versions of chrome, then fire the callback
if( !s_instance->IsAnyChromeWindowsRunning() ) {
s_instance->CloseLiveBrowserFireCallback(NO_ERROR);
}
else if(s_instance->m_closeLiveBrowserHeartbeatTimerId == 0){
//start a heartbeat timer to see if it closes after the message returned
s_instance->m_closeLiveBrowserHeartbeatTimerId = ::SetTimer(NULL, 0, 30, CloseLiveBrowserTimerCallback);
}
}
LiveBrowserMgrWin* LiveBrowserMgrWin::s_instance = NULL;
static int CALLBACK SetInitialPathCallback(HWND hWnd, UINT uMsg, LPARAM lParam, LPARAM lpData)
{
if (BFFM_INITIALIZED == uMsg && NULL != lpData)
{
SendMessage(hWnd, BFFM_SETSELECTION, TRUE, lpData);
}
return 0;
}
static std::wstring GetPathToLiveBrowser()
{
HKEY hKey;
// First, look at the "App Paths" registry key for a "chrome.exe" entry. This only
// checks for installs for all users. If Chrome is only installed for the current user,
// we fall back to the code below.
if (ERROR_SUCCESS == RegOpenKeyEx(
HKEY_LOCAL_MACHINE,
L"SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\App Paths\\chrome.exe",
0, KEY_READ, &hKey)) {
wchar_t wpath[MAX_UNC_PATH] = {0};
DWORD length = MAX_UNC_PATH;
RegQueryValueEx(hKey, NULL, NULL, NULL, (LPBYTE)wpath, &length);
RegCloseKey(hKey);
return std::wstring(wpath);
}
// We didn't get an "App Paths" entry. This could be because Chrome was only installed for
// the current user, or because Chrome isn't installed at all.
// Look for Chrome.exe at C:\Users\{USERNAME}\AppData\Local\Google\Chrome\Application\chrome.exe
TCHAR localAppPath[MAX_UNC_PATH] = {0};
SHGetFolderPath(NULL, CSIDL_LOCAL_APPDATA, NULL, SHGFP_TYPE_CURRENT, localAppPath);
std::wstring appPath(localAppPath);
appPath += L"\\Google\\Chrome\\Application\\chrome.exe";
return appPath;
}
static bool ConvertToShortPathName(std::wstring & path)
{
DWORD shortPathBufSize = MAX_UNC_PATH+1;
WCHAR shortPathBuf[MAX_UNC_PATH+1];
DWORD finalShortPathSize = ::GetShortPathName(path.c_str(), shortPathBuf, shortPathBufSize);
if( finalShortPathSize == 0 ) {
return false;
}
path.assign(shortPathBuf, finalShortPathSize);
return true;
}
int32 OpenLiveBrowser(ExtensionString argURL, bool enableRemoteDebugging)
{
std::wstring appPath = GetPathToLiveBrowser();
std::wstring args = appPath;
if (enableRemoteDebugging) {
std::wstring profilePath(appshell::AppGetSupportDirectory());
profilePath += L"\\live-dev-profile";
args += L" --user-data-dir=\"";
args += profilePath;
args += L"\" --disk-cache-size=250000000 --no-first-run --no-default-browser-check --disable-default-apps --allow-file-access-from-files --remote-debugging-port=9222 ";
} else {
args += L" ";
}
args += argURL;
// Args must be mutable
int argsBufSize = args.length() +1;
std::vector<WCHAR> argsBuf;
argsBuf.resize(argsBufSize);
wcscpy(&argsBuf[0], args.c_str());
STARTUPINFO si = {0};
si.cb = sizeof(si);
PROCESS_INFORMATION pi = {0};
// Launch cmd.exe and pass in the arguments
if (!CreateProcess(NULL, &argsBuf[0], NULL, NULL, FALSE, 0, NULL, NULL, &si, &pi)) {
return ConvertWinErrorCode(GetLastError());
}
CloseHandle(pi.hProcess);
CloseHandle(pi.hThread);
return NO_ERROR;
}
void CloseLiveBrowser(CefRefPtr<CefBrowser> browser, CefRefPtr<CefProcessMessage> response)
{
LiveBrowserMgrWin* liveBrowserMgr = LiveBrowserMgrWin::GetInstance();
if (liveBrowserMgr->GetCloseCallback() != NULL) {
// We can only handle a single async callback at a time. If there is already one that hasn't fired then
// we kill it now and get ready for the next.
liveBrowserMgr->CloseLiveBrowserFireCallback(ERR_UNKNOWN);
}
liveBrowserMgr->SetCloseCallback(response);
liveBrowserMgr->SetBrowser(browser);
EnumChromeWindowsCallbackData cbData = {0};
cbData.numberOfFoundWindows = 0;
cbData.closeWindow = true;
::EnumWindows(LiveBrowserMgrWin::EnumChromeWindowsCallback, (LPARAM)&cbData);
if (cbData.numberOfFoundWindows == 0) {
liveBrowserMgr->CloseLiveBrowserFireCallback(NO_ERROR);
} else if (liveBrowserMgr->GetCloseCallback()) {
// set a timeout for up to 10 seconds to close the browser
liveBrowserMgr->SetCloseTimeoutTimerId( ::SetTimer(NULL, 0, 10 * 1000, LiveBrowserMgrWin::CloseLiveBrowserTimerCallback) );
}
}
static BOOL ResolveAppPathCommon(const ExtensionString& lpszKey, const ExtensionString& lpszVal, ExtensionString& appPath)
{
HKEY keyRoot = NULL;
BOOL result = FALSE;
ULONG regKey(REG_SZ);
if (::RegOpenKeyEx(HKEY_CLASSES_ROOT, lpszKey.c_str(), 0, KEY_QUERY_VALUE, &keyRoot) == ERROR_SUCCESS)
{
TCHAR editorPath[255];
ULONG fTypeSize = 255;
if (::RegQueryValueEx(keyRoot, lpszVal.c_str(), NULL, ®Key, (LPBYTE)editorPath, &fTypeSize) == ERROR_SUCCESS)
{
if (editorPath != L"")
{
appPath = editorPath;
//appPath = appPath.substr(appPath.find_last_of(L"/\\") + 1);
int iExe = appPath.find(L".exe");
if (iExe == -1)
iExe = appPath.find(L".EXE");
if (iExe != -1)
appPath = appPath.substr(0, iExe+4);
if (appPath[0] == '\"')
appPath = appPath.substr(1);
result = TRUE;
}
}
::RegCloseKey(keyRoot);
}
return result;
}
static BOOL ResolveAppPathFromProgID(const ExtensionString& lpszProgID, ExtensionString& appPath)
{
ExtensionString key = lpszProgID + L"\\shell\\open\\command";
if (!ResolveAppPathCommon(key, L"", appPath))
{
key = lpszProgID + L"\\Application";
if (ResolveAppPathCommon(key, L"AppUserModelID", appPath)) {
appPath = appPath.substr(0, appPath.find(L"_"));
return true;
}
return false;
}
return true;
}
BOOL GetShellDefaultOpenWithProgPath(const ExtensionString& fileExt, ExtensionString &appPath)
{
HKEY extKey = NULL;
ExtensionString key = fileExt;
BOOL result = FALSE;
ULONG regKey(REG_SZ);
if (fileExt.empty())
return false;
if (fileExt[0] != '.')
key = L"." + fileExt;
key = L"Software\\Microsoft\\Windows\\CurrentVersion\\Explorer\\FileExts\\" + key + L"\\UserChoice";
if (::RegOpenKeyEx(HKEY_CURRENT_USER, key.c_str(), 0, KEY_QUERY_VALUE, &extKey) == ERROR_SUCCESS)
{
TCHAR editorPath[255];
ULONG fTypeSize = 255;
if (::RegQueryValueEx(extKey, L"Progid", NULL, ®Key, (LPBYTE)editorPath, &fTypeSize) == ERROR_SUCCESS)
{
result = ResolveAppPathFromProgID(editorPath, appPath);
}
::RegCloseKey(extKey);
}
return result;
}
BOOL GetLegacyWin32SystemEditor(const ExtensionString& fileExt, ExtensionString &appPath)
{
HKEY rootKey;
ULONG regKey(REG_SZ);
ExtensionString key = fileExt;
if (fileExt.empty())
return false;
if (fileExt[0] != '.')
key = L"." + key;
// find the key for the file extension
if (RegOpenKeyEx(HKEY_CLASSES_ROOT, key.c_str(), 0, KEY_QUERY_VALUE, &rootKey) == ERROR_SUCCESS)
{
TCHAR nextKeyStr[255];
ULONG strSize = 255;
// get the value of the key
if (RegQueryValueEx(rootKey, L"", NULL, ®Key,
(LPBYTE)nextKeyStr, &strSize) == ERROR_SUCCESS)
{
RegCloseKey(rootKey);
return ResolveAppPathFromProgID(nextKeyStr, appPath);
}
RegCloseKey(rootKey);
}
key = key + L"\\OpenWithProgids";
HKEY extKey;
// find the key for the file extension
if (RegOpenKeyEx(HKEY_CLASSES_ROOT, key.c_str(), 0, KEY_QUERY_VALUE | KEY_READ, &extKey) == ERROR_SUCCESS)
{
TCHAR subKeyStr[255];
ULONG subKeySize = 255;
DWORD index = 0;
LONG err = RegEnumValue(extKey, index, subKeyStr, &subKeySize,
0, 0, 0, NULL);
if (err != ERROR_NO_MORE_ITEMS)
{
RegCloseKey(extKey);
return ResolveAppPathFromProgID(subKeyStr, appPath);
}
RegCloseKey(extKey);
}
return FALSE;
}
int32 getSystemDefaultApp(const ExtensionString& fileTypes, ExtensionString& fileTypesWithdefaultApp)
{
wchar_t* nextPtr;
wchar_t delim[] = L",";
std::vector<ExtensionString> extArray;
ExtensionString separator = L"##";
wchar_t* token = std::wcstok((wchar_t*)fileTypes.c_str(), delim, &nextPtr);
while (token) {
extArray.push_back(token);
token = wcstok(NULL, delim, &nextPtr);
}
for (std::vector<ExtensionString>::const_iterator it = extArray.begin(); it != extArray.end(); ++it) {
ExtensionString appPath;
BOOL result = GetShellDefaultOpenWithProgPath(*it, appPath);
if (!result)
result = GetLegacyWin32SystemEditor(*it, appPath);
if (result)
fileTypesWithdefaultApp = fileTypesWithdefaultApp + *it + separator + appPath + L",";
}
return NO_ERROR;
}
int32 OpenURLInDefaultBrowser(ExtensionString url)
{
DWORD result = (DWORD)ShellExecute(NULL, L"open", url.c_str(), NULL, NULL, SW_SHOWNORMAL);
// If the result > 32, the function suceeded. If the result is <= 32, it is an
// error code.
if (result <= 32)
return ConvertWinErrorCode(result);
return NO_ERROR;
}
int32 ShowOpenDialog(bool allowMultipleSelection,
bool chooseDirectory,
ExtensionString title,
ExtensionString initialDirectory,
ExtensionString fileTypes,
CefRefPtr<CefListValue>& selectedFiles)
{
wchar_t szFile[MAX_UNC_PATH];
szFile[0] = 0;
// Windows common file dialogs can handle Windows path only, not Unix path.
// ofn.lpstrInitialDir also needs Windows path on XP and not Unix path.
ConvertToNativePath(initialDirectory);
if (chooseDirectory) {
IFileDialog *pfd;
if (SUCCEEDED(CoCreateInstance(CLSID_FileOpenDialog, NULL, CLSCTX_INPROC_SERVER, IID_PPV_ARGS(&pfd)))) {
// configure the dialog to Select Folders only
DWORD dwOptions;
if (SUCCEEDED(pfd->GetOptions(&dwOptions))) {
pfd->SetOptions(dwOptions | FOS_PICKFOLDERS | FOS_DONTADDTORECENT);
IShellItem *shellItem = NULL;
if (SUCCEEDED(SHCreateItemFromParsingName(initialDirectory.c_str(), 0, IID_IShellItem, reinterpret_cast<void**>(&shellItem))))
pfd->SetFolder(shellItem);
pfd->SetTitle(title.c_str());
if (SUCCEEDED(pfd->Show(GetActiveWindow()))) {
IShellItem *psi;
if (SUCCEEDED(pfd->GetResult(&psi))) {
LPWSTR lpwszName = NULL;
if(SUCCEEDED(psi->GetDisplayName(SIGDN_DESKTOPABSOLUTEPARSING, (LPWSTR*)&lpwszName))) {
// Add directory path to the result
std::wstring wstrName(lpwszName);
ExtensionString pathName(wstrName);
ConvertToUnixPath(pathName);
selectedFiles->SetString(0, pathName);
::CoTaskMemFree(lpwszName);
}
psi->Release();
}
}
if (shellItem != NULL)
shellItem->Release();
}
pfd->Release();
}
} else {
OPENFILENAME ofn;
ZeroMemory(&ofn, sizeof(ofn));
ofn.hwndOwner = GetActiveWindow();
ofn.lStructSize = sizeof(ofn);
ofn.lpstrFile = szFile;
ofn.nMaxFile = MAX_UNC_PATH;
ofn.lpstrTitle = title.c_str();
// TODO (issue #65) - Use passed in file types. Note, when fileTypesStr is null, all files should be shown
/* findAndReplaceString( fileTypesStr, std::string(" "), std::string(";*."));
LPCWSTR allFilesFilter = L"All Files\0*.*\0\0";*/
ofn.lpstrFilter = L"All Files\0*.*\0Web Files\0*.js;*.css;*.htm;*.html\0\0";
ofn.lpstrInitialDir = initialDirectory.c_str();
ofn.Flags = OFN_PATHMUSTEXIST | OFN_FILEMUSTEXIST | OFN_NOCHANGEDIR | OFN_EXPLORER;
if (allowMultipleSelection)
ofn.Flags |= OFN_ALLOWMULTISELECT;
if (GetOpenFileName(&ofn)) {
if (allowMultipleSelection) {
// Multiple selection encodes the files differently
// If multiple files are selected, the first null terminator
// signals end of directory that the files are all in
std::wstring dir(szFile);
// Check for two null terminators, which signal that only one file
// was selected
if (szFile[dir.length() + 1] == '\0') {
ExtensionString filePath(dir);
ConvertToUnixPath(filePath);
selectedFiles->SetString(0, filePath);
} else {
// Multiple files are selected
wchar_t fullPath[MAX_UNC_PATH];
for (int i = (dir.length() + 1), fileIndex = 0; ; fileIndex++) {
// Get the next file name
std::wstring file(&szFile[i]);
// Two adjacent null characters signal the end of the files
if (file.length() == 0)
break;
// The filename is relative to the directory that was specified as
// the first string
if (PathCombine(fullPath, dir.c_str(), file.c_str()) != NULL) {
ExtensionString filePath(fullPath);
ConvertToUnixPath(filePath);
selectedFiles->SetString(fileIndex, filePath);
}
// Go to the start of the next file name
i += file.length() + 1;
}
}
} else {
// If multiple files are not allowed, add the single file
std::wstring filePath(szFile);
ConvertToUnixPath(filePath);
selectedFiles->SetString(0, filePath);
}
}
}
return NO_ERROR;
}
int32 ShowSaveDialog(ExtensionString title,
ExtensionString initialDirectory,
ExtensionString proposedNewFilename,
ExtensionString& absoluteFilepath)
{
ConvertToNativePath(initialDirectory); // Windows common file dlgs require Windows-style paths
// call Windows common file-saveas dialog to prompt for a filename in a writeable location
OPENFILENAME ofn;
ZeroMemory(&ofn, sizeof(ofn));
ofn.hwndOwner = GetActiveWindow();
ofn.lStructSize = sizeof(ofn);
wchar_t szFile[MAX_UNC_PATH];
wcscpy(szFile, proposedNewFilename.c_str());
ofn.lpstrFile = szFile;
ofn.nMaxFile = MAX_UNC_PATH;
ofn.lpstrFilter = L"All Files\0*.*\0Web Files\0*.js;*.css;*.htm;*.html\0Text Files\0*.txt\0\0";
ofn.lpstrInitialDir = initialDirectory.c_str();
ofn.Flags = OFN_ENABLESIZING | OFN_NOREADONLYRETURN | OFN_OVERWRITEPROMPT | OFN_PATHMUSTEXIST | OFN_EXPLORER;
if (GetSaveFileName(&ofn)) {
// return the validated filename using Unix-style paths
absoluteFilepath = ofn.lpstrFile;
ConvertToUnixPath(absoluteFilepath);
}
return NO_ERROR;
}
int32 IsNetworkDrive(ExtensionString path, bool& isRemote)
{
if (path.length() == 0) {
return ERR_INVALID_PARAMS;
}
DWORD dwAttr;
dwAttr = GetFileAttributes(path.c_str());
if (INVALID_FILE_ATTRIBUTES == dwAttr)
return ConvertWinErrorCode(GetLastError());
ExtensionString drive = path.substr(0, path.find('/') + 1);
isRemote = GetDriveType(drive.c_str()) == DRIVE_REMOTE;
return NO_ERROR;
}
int32 ReadDir(ExtensionString path, CefRefPtr<CefListValue>& directoryContents)
{
if (path.length() && path[path.length() - 1] != '/')
path += '/';
path += '*';
// Convert to native path to ensure that FindFirstFile and FindNextFile
// function correctly for all paths including paths to a network drive.
ConvertToNativePath(path);
WIN32_FIND_DATA ffd;
HANDLE hFind = FindFirstFile(path.c_str(), &ffd);
std::vector<ExtensionString> resultFiles;
std::vector<ExtensionString> resultDirs;
if (hFind != INVALID_HANDLE_VALUE) {
do {
// Ignore '.' and '..' and system files
if (!wcscmp(ffd.cFileName, L".") || !wcscmp(ffd.cFileName, L"..") ||
(ffd.dwFileAttributes & FILE_ATTRIBUTE_SYSTEM))
continue;
// Collect file and directory names separately
if (ffd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
resultDirs.push_back(ExtensionString(ffd.cFileName));
} else {
resultFiles.push_back(ExtensionString(ffd.cFileName));
}
}
while (FindNextFile(hFind, &ffd) != 0);
FindClose(hFind);
}
else {
return ConvertWinErrorCode(GetLastError());
}
// On Windows, list directories first, then files
size_t i, total = 0;
for (i = 0; i < resultDirs.size(); i++)
directoryContents->SetString(total++, resultDirs[i]);
for (i = 0; i < resultFiles.size(); i++)
directoryContents->SetString(total++, resultFiles[i]);
return NO_ERROR;
}
int32 MakeDir(ExtensionString path, int32 mode)
{
// TODO (issue #1759): honor mode
ConvertToNativePath(path);
int err = SHCreateDirectoryEx(NULL, path.c_str(), NULL);
return ConvertWinErrorCode(err);
}
int32 Rename(ExtensionString oldName, ExtensionString newName)
{
if (!MoveFile(oldName.c_str(), newName.c_str()))
return ConvertWinErrorCode(GetLastError());
return NO_ERROR;
}
// function prototype for GetFinalPathNameByHandleW(), which is unavailable on Windows XP and earlier
typedef DWORD (WINAPI *PFNGFPNBH)(
_In_ HANDLE hFile,
_Out_ LPTSTR lpszFilePath,
_In_ DWORD cchFilePath,
_In_ DWORD dwFlags
);
int32 GetFileInfo(ExtensionString filename, uint32& modtime, bool& isDir, double& size, ExtensionString& realPath)
{
WIN32_FILE_ATTRIBUTE_DATA fad;
if (!GetFileAttributesEx(filename.c_str(), GetFileExInfoStandard, &fad)) {
return ConvertWinErrorCode(GetLastError());
}
DWORD dwAttr = fad.dwFileAttributes;
isDir = ((dwAttr & FILE_ATTRIBUTE_DIRECTORY) != 0);
modtime = FiletimeToTime(fad.ftLastWriteTime);
LARGE_INTEGER size_tmp;
size_tmp.HighPart = fad.nFileSizeHigh;
size_tmp.LowPart = fad.nFileSizeLow;
size = size_tmp.QuadPart;
realPath = L"";
if (dwAttr & FILE_ATTRIBUTE_REPARSE_POINT) {
// conditionally call GetFinalPathNameByHandleW() if it's available -- Windows Vista or later
HMODULE hDLL = ::GetModuleHandle(TEXT("kernel32.dll"));
PFNGFPNBH pfn = (hDLL != NULL) ? (PFNGFPNBH)::GetProcAddress(hDLL, "GetFinalPathNameByHandleW") : NULL;
if (pfn != NULL) {
HANDLE hFile;
hFile = ::CreateFileW(filename.c_str(), GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL);
if (hFile != INVALID_HANDLE_VALUE) {
wchar_t pathBuffer[MAX_UNC_PATH + 1];
DWORD nChars;
nChars = (*pfn)(hFile, pathBuffer, MAX_UNC_PATH, FILE_NAME_NORMALIZED | VOLUME_NAME_DOS);
if (nChars && nChars <= MAX_UNC_PATH) {
// Path returned by GetFilePathNameByHandle starts with "\\?\". Remove from returned value.
realPath = &pathBuffer[4];
// UNC paths start with UNC. Update here, if needed.
if (realPath.find(L"UNC") == 0) {
realPath = L"\\" + ExtensionString(&pathBuffer[7]);
}
ConvertToUnixPath(realPath);
}
::CloseHandle(hFile);
}
// Note: all realPath errors are ignored. If the realPath can't be determined, it should not make the
// stat fail.
}
}
return NO_ERROR;
}
const int BOMLength = 3;
enum CheckedState { CS_UNKNOWN, CS_NO, CS_YES };
typedef struct UTFValidationState {
UTFValidationState () {
data = NULL;
dataLen = 0;
utf1632 = CS_UNKNOWN;
preserveBOM = true;
}
char* data;
DWORD dataLen;
CheckedState utf1632;
bool preserveBOM;
} UTFValidationState;
bool hasBOM(UTFValidationState& validationState)
{
return ((validationState.dataLen >= BOMLength) && (validationState.data[0] == (char)0xEF) && (validationState.data[1] == (char)0xBB) && (validationState.data[2] == (char)0xBF));
}
bool hasUTF16_32(UTFValidationState& validationState)
{
if (validationState.utf1632 == CS_UNKNOWN) {
int flags = IS_TEXT_UNICODE_UNICODE_MASK|IS_TEXT_UNICODE_REVERSE_MASK;
// Check to see if buffer is UTF-16 or UTF-32 with or without a BOM
BOOL test = IsTextUnicode(validationState.data, validationState.dataLen, &flags);
validationState.utf1632 = (test ? CS_YES : CS_NO);
}
return (validationState.utf1632 == CS_YES);
}
void RemoveBOM(UTFValidationState& validationState)
{
if (!validationState.preserveBOM) {
validationState.dataLen -= BOMLength;
CopyMemory (validationState.data, validationState.data+3, validationState.dataLen);
}
}
bool GetBufferAsUTF8(UTFValidationState& validationState)
{
if (validationState.dataLen == 0) {
return true;
}
// if we know it's UTF-16 or UTF-32 then bail
if (hasUTF16_32(validationState)) {
return false;
}
// See if we can convert the data to UNICODE from UTF-8
// if the data isn't UTF-8, this will fail and the result will be 0
int outBuffSize = (validationState.dataLen + 1) * 2;
wchar_t* outBuffer = new wchar_t[outBuffSize];
int result = MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS, validationState.data, validationState.dataLen, outBuffer, outBuffSize);
delete []outBuffer;
if ((result > 0) && hasBOM(validationState)) {
RemoveBOM(validationState);
}
return (result > 0);
}
bool IsUTFLeadByte(char data)
{
return (((data & 0xF8) == 0xF0) || // 4 BYTE
((data & 0xF0) == 0xE0) || // 3 BYTE
((data & 0xE0) == 0xC0)); // 2 BYTE
}
// we can't validate something that's smaller than 12 bytes
const int kMinValidationLength = 12;
bool quickTestBufferForUTF8(UTFValidationState& validationState)
{
if (validationState.dataLen < kMinValidationLength) {
// we really don't know so just assume it's valid
return true;
}
// if we know it's UTF-16 or UTF-32 then bail
if (hasUTF16_32(validationState)) {
return false;
}
// If it has a UTF-8 BOM, then
// assume it's UTF8
if (hasBOM(validationState)) {
return true;
}
// find the last lead byte and truncate
// the buffer beforehand and check that to avoid
// checking a malformed data stream
for (int i = 1; i < 4; i++) {
int index = (validationState.dataLen - i);
if ((index > 0) && (IsUTFLeadByte(validationState.data[index]))){
validationState.dataLen = index;
break;
}
}
// this will check to see if the we have valid
// UTF8 data in the sample data. This should tell
// us if it's binary or not but doesn't necessarily
// tell us if the file is valid UTF8
return (GetBufferAsUTF8(validationState));
}
typedef std::map<std::string, long> CharSetMap;
// Mapping of CharSet to CodePage
CharSetMap charSetMap =
{
// Below mappings are listed on website