Create temporary folder for Edge in IEMode

cpp/iedriver/BrowserFactory.cpp

@@ -335,6 +335,44 @@ void BrowserFactory::LaunchBrowserUsingCreateProcess(PROCESS_INFORMATION* proc_i
   delete[] command_line;
 }
 
+bool BrowserFactory::DirectoryExists(std::wstring& dir_name) {
+  DWORD attribs = ::GetFileAttributes(dir_name.c_str());
+  if (attribs == INVALID_FILE_ATTRIBUTES) {
+    return false;
+  }
+  return (attribs & FILE_ATTRIBUTE_DIRECTORY);
+}
+
+bool BrowserFactory::CreateUniqueTempDir(std::wstring &temp_dir) {
+  // get temporary folder for the current user
+  wchar_t temp[128];
+  ::GetTempPath(128, temp);
+  std::wstring wtemp = temp;
+  if (!DirectoryExists(wtemp)) {
+    return false;
+  }
+
+  // create a IEDriver temporary folder inside the user level temporary folder
+  bool temp_dir_created = false;
+  for (int i=0; i<10; i++) {
+    std::wstring output = wtemp + L"IEDriver-" + StringUtilities::CreateGuid();
+    if (DirectoryExists(output)) {
+      continue;
+    }
+
+    ::CreateDirectory(output.c_str(), NULL);
+    if (!DirectoryExists(output)) {
+      continue;
+    }
+
+    temp_dir = output;
+    temp_dir_created = true;
+    break;
+  }
+
+  return temp_dir_created;
+}
+
 void BrowserFactory::LaunchEdgeInIEMode(PROCESS_INFORMATION* proc_info,
                                         std::string* error_message) {
   LOG(TRACE) << "Entering BrowserFactory::LaunchEdgeInIEMode";
@@ -353,6 +391,14 @@ void BrowserFactory::LaunchEdgeInIEMode(PROCESS_INFORMATION* proc_info,
   executable_and_url.append(L" --ie-mode-force");
   executable_and_url.append(L" --internet-explorer-integration=iemode");
 
+  // create a temporary directory for IEDriver test
+  std::wstring temp_dir;
+  if (CreateUniqueTempDir(temp_dir)) {
+    LOG(TRACE) << L"Using temporary folder " << LOGWSTRING(temp_dir) << ".";
+    executable_and_url.append(L" --user-data-dir=" + temp_dir);
+    this->edge_user_data_dir_ = temp_dir;
+  }
+
   executable_and_url.append(L" ");
   executable_and_url.append(this->initial_browser_url_);
 
@@ -1393,4 +1439,55 @@ bool BrowserFactory::IsEdgeMode() const {
   return this->edge_ie_mode_;
 }
 
+// delete a folder recursively
+int BrowserFactory::DeleteDirectory(const std::wstring &dir_name) {
+  WIN32_FIND_DATA file_info;      
+
+  std::wstring file_pattern = dir_name + L"\\*.*";
+  HANDLE file_handle = ::FindFirstFile(file_pattern.c_str(), &file_info);
+  if (file_handle != INVALID_HANDLE_VALUE) {
+    do {
+      if (file_info.cFileName[0] == '.') {
+        continue;
+      }
+      std::wstring file_path = dir_name + L"\\" + file_info.cFileName;
+
+      if (file_info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
+        int return_value = DeleteDirectory(file_path);
+        if (return_value) {
+          return return_value;
+        }
+      } else {
+        if (::SetFileAttributes(file_path.c_str(), FILE_ATTRIBUTE_NORMAL) == FALSE) {
+          return ::GetLastError();
+        }
+
+        if (::DeleteFile(file_path.c_str()) == FALSE) {
+          return ::GetLastError();
+        }
+      }
+    } while (::FindNextFile(file_handle, &file_info) == TRUE);
+
+    ::FindClose(file_handle);
+    DWORD dwError = ::GetLastError();
+    if (dwError != ERROR_NO_MORE_FILES) {
+      return dwError;
+    }
+
+    if (::SetFileAttributes(dir_name.c_str(), FILE_ATTRIBUTE_NORMAL) == FALSE) {
+      return ::GetLastError();
+    }
+
+    if (::RemoveDirectory(dir_name.c_str()) == FALSE) {
+      return ::GetLastError();
+    }
+  }
+
+  return 0;
+}
+
+std::wstring BrowserFactory::GetEdgeTempDir() {
+  return this->edge_user_data_dir_;
+}
+
 } // namespace webdriver

cpp/iedriver/BrowserFactory.h

@@ -74,17 +74,20 @@ class BrowserFactory {
   static BOOL CALLBACK FindEdgeBrowserHandles(HWND hwnd, LPARAM arg);
 
   static bool IsWindowsVistaOrGreater(void);
+  static int DeleteDirectory(const std::wstring &dir_name);
 
   bool IsEdgeMode(void) const;
+  std::wstring GetEdgeTempDir(void);
  private:
   static BOOL CALLBACK FindBrowserWindow(HWND hwnd, LPARAM param);
-
-
   static BOOL CALLBACK FindEdgeWindow(HWND hwnd, LPARAM param);
   static bool IsWindowsVersionOrGreater(unsigned short major_version,
                                         unsigned short minor_version,
                                         unsigned short service_pack);
 
+  static bool DirectoryExists(std::wstring& dir_name);
+  static bool CreateUniqueTempDir(std::wstring &temp_dir);
+
   UINT html_getobject_msg_;
   HINSTANCE oleacc_instance_handle_;
 
@@ -131,6 +134,7 @@ class BrowserFactory {
 
   bool edge_ie_mode_;
   std::wstring edge_executable_location_;
+  std::wstring edge_user_data_dir_;
 };
 
 } // namespace webdriver

cpp/iedriver/IECommandExecutor.cpp

@@ -119,6 +119,7 @@ LRESULT IECommandExecutor::OnCreate(UINT uMsg,
   this->command_handlers_ = new CommandHandlerRepository();
 
   this->is_edge_chromium_ = false;
+  this->edge_temp_dir_ = L"";
 
   return 0;
 }
@@ -465,6 +466,26 @@ LRESULT IECommandExecutor::OnBrowserQuit(UINT uMsg,
   } else {
     LOG(WARN) << "Unable to find browser to quit with ID " << browser_id;
   }
+
+  // Delete IEDriver temporary folder when IEDriver drvies Edge in IEMode.
+  // Note that the this->factory_ object might have been deleted.
+  if (this->edge_temp_dir_ != L"") {
+    for (int i=0;i<100;i++) {
+      ::Sleep(100); // wait for the Edge browser completing read/write work
+      // the delete usually completes in 1 retries
+      if (BrowserFactory::DeleteDirectory(edge_temp_dir_)) {
+        // directory delete failed when some files/folders are locked
+        LOG(TRACE) << "Failed to delete Edge temporary user data directory " << LOGWSTRING(edge_temp_dir_) 
+                  << ", retrying " << i+1 << "...";
+      } else {
+        // the temporary folder has been deleted
+        LOG(TRACE) << "Deleted Edge temporary user data directory " << LOGWSTRING(edge_temp_dir_) << ".";
+        break;
+      }
+    }
+    this->edge_temp_dir_ = L"";
+  }
+
   return 0;
 }
 
@@ -1430,6 +1451,7 @@ int IECommandExecutor::CreateNewBrowser(std::string* error_message) {
     LOG(WARN) << "Browser was launched and attached to, but is still busy.";
   }
   wrapper->SetFocusToBrowser();
+  this->edge_temp_dir_ = this->factory_->GetEdgeTempDir();
   return WD_SUCCESS;
 }
 

cpp/iedriver/IECommandExecutor.h

@@ -289,6 +289,7 @@ class IECommandExecutor : public CWindowImpl<IECommandExecutor>, public IElement
   bool use_strict_file_interactability_;
   bool is_edge_chromium_;
   std::string edge_executable_path_;
+  std::wstring edge_temp_dir_;
 
   Command current_command_;
   std::string serialized_response_;