Index: win8/delegate_execute/command_execute_impl.cc |
diff --git a/win8/delegate_execute/command_execute_impl.cc b/win8/delegate_execute/command_execute_impl.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..ef1378a23b57aa4378f88ec1f942f09d24dccf24 |
--- /dev/null |
+++ b/win8/delegate_execute/command_execute_impl.cc |
@@ -0,0 +1,440 @@ |
+// Copyright (c) 2012 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+// Implementation of the CommandExecuteImpl class which implements the |
+// IExecuteCommand and related interfaces for handling ShellExecute based |
+// launches of the Chrome browser. |
+ |
+#include "win8/delegate_execute/command_execute_impl.h" |
+ |
+#include "base/file_util.h" |
+#include "base/path_service.h" |
+#include "base/utf_string_conversions.h" |
+#include "base/win/scoped_co_mem.h" |
+#include "base/win/scoped_handle.h" |
+#include "chrome/common/chrome_constants.h" |
+#include "chrome/common/chrome_paths.h" |
+#include "chrome/common/chrome_switches.h" |
+#include "win8/delegate_execute/chrome_util.h" |
+ |
+// CommandExecuteImpl is resposible for activating chrome in Windows 8. The |
+// flow is complicated and this tries to highlight the important events. |
+// The current approach is to have a single instance of chrome either |
+// running in desktop or metro mode. If there is no current instance then |
+// the desktop shortcut launches desktop chrome and the metro tile or search |
+// charm launches metro chrome. |
+// If chrome is running then focus/activation is given to the existing one |
+// regarless of what launch point the user used. |
+// |
+// The general flow when chrome is the default browser is as follows: |
+// |
+// 1- User interacts with launch point (icon, tile, search, shellexec, etc) |
+// 2- Windows finds the appid for launch item and resolves it to chrome |
+// 3- Windows activates CommandExecuteImpl inside a surrogate process |
+// 4- Windows calls the following sequence of entry points: |
+// CommandExecuteImpl::SetShowWindow |
+// CommandExecuteImpl::SetPosition |
+// CommandExecuteImpl::SetDirectory |
+// CommandExecuteImpl::SetParameter |
+// CommandExecuteImpl::SetNoShowUI |
+// CommandExecuteImpl::SetSelection |
+// CommandExecuteImpl::Initialize |
+// Up to this point the code basically just gathers values passed in, like |
+// the launch scheme (or url) and the activation verb. |
+// 5- Windows calls CommandExecuteImpl::Getvalue() |
+// Here we need to return AHE_IMMERSIVE or AHE_DESKTOP. That depends on: |
+// a) if run in high-integrity return AHE_DESKTOP |
+// b) if chrome is running return the AHE_ mode of chrome |
+// c) if the current process is inmmersive return AHE_IMMERSIVE |
+// d) if the protocol is file and IExecuteCommandHost::GetUIMode() is not |
+// ECHUIM_DESKTOP then return AHE_IMMERSIVE |
+// e) if none of the above return AHE_DESKTOP |
+// 6- If we returned AHE_DESKTOP in step 5 then CommandExecuteImpl::Execute() |
+// is called, here we call GetLaunchMode() which: |
+// a) if chrome is running return the mode of chrome or |
+// b) return IExecuteCommandHost::GetUIMode() |
+// 7- If GetLaunchMode() returns |
+// a) ECHUIM_DESKTOP we call LaunchDestopChrome() that calls ::CreateProcess |
+// b) else we call one of the IApplicationActivationManager activation |
+// functions depending on the parameters passed in step 4. |
+// |
+// Some examples will help clarify the common cases. |
+// |
+// I - No chrome running, taskbar icon launch: |
+// a) Scheme is 'file', Verb is 'open' |
+// b) GetValue() returns at e) step : AHE_DESKTOP |
+// c) Execute() calls LaunchDestopChrome() |
+// --> desktop chrome runs |
+// II- No chrome running, tile activation launch: |
+// a) Scheme is 'file', Verb is 'open' |
+// b) GetValue() returns at d) step : AHE_IMMERSIVE |
+// c) Windows does not call us back and just activates chrome |
+// --> metro chrome runs |
+// III- No chrome running, url link click on metro app: |
+// a) Scheme is 'http', Verb is 'open' |
+// b) Getvalue() returns at e) step : AHE_DESKTOP |
+// c) Execute() calls IApplicationActivationManager::ActivateForProtocol |
+// --> metro chrome runs |
+// |
+CommandExecuteImpl::CommandExecuteImpl() |
+ : integrity_level_(base::INTEGRITY_UNKNOWN), |
+ launch_scheme_(INTERNET_SCHEME_DEFAULT), |
+ chrome_mode_(ECHUIM_SYSTEM_LAUNCHER) { |
+ memset(&start_info_, 0, sizeof(start_info_)); |
+ start_info_.cb = sizeof(start_info_); |
+ // We need to query the user data dir of chrome so we need chrome's |
+ // path provider. |
+ chrome::RegisterPathProvider(); |
+} |
+ |
+// CommandExecuteImpl |
+STDMETHODIMP CommandExecuteImpl::SetKeyState(DWORD key_state) { |
+ AtlTrace("In %hs\n", __FUNCTION__); |
+ return S_OK; |
+} |
+ |
+STDMETHODIMP CommandExecuteImpl::SetParameters(LPCWSTR params) { |
+ AtlTrace("In %hs [%S]\n", __FUNCTION__, params); |
+ if (params) { |
+ parameters_ = params; |
+ } |
+ return S_OK; |
+} |
+ |
+STDMETHODIMP CommandExecuteImpl::SetPosition(POINT pt) { |
+ AtlTrace("In %hs\n", __FUNCTION__); |
+ return S_OK; |
+} |
+ |
+STDMETHODIMP CommandExecuteImpl::SetShowWindow(int show) { |
+ AtlTrace("In %hs show=%d\n", __FUNCTION__, show); |
+ start_info_.wShowWindow = show; |
+ start_info_.dwFlags |= STARTF_USESHOWWINDOW; |
+ return S_OK; |
+} |
+ |
+STDMETHODIMP CommandExecuteImpl::SetNoShowUI(BOOL no_show_ui) { |
+ AtlTrace("In %hs no_show=%d\n", __FUNCTION__, no_show_ui); |
+ return S_OK; |
+} |
+ |
+STDMETHODIMP CommandExecuteImpl::SetDirectory(LPCWSTR directory) { |
+ AtlTrace("In %hs\n", __FUNCTION__); |
+ return S_OK; |
+} |
+ |
+STDMETHODIMP CommandExecuteImpl::GetValue(enum AHE_TYPE* pahe) { |
+ AtlTrace("In %hs\n", __FUNCTION__); |
+ |
+ if (!GetLaunchScheme(&display_name_, &launch_scheme_)) { |
+ AtlTrace("Failed to get scheme, E_FAIL\n"); |
+ return E_FAIL; |
+ } |
+ |
+ if (integrity_level_ == base::HIGH_INTEGRITY) { |
+ // Metro mode apps don't work in high integrity mode. |
+ AtlTrace("High integrity, AHE_DESKTOP\n"); |
+ *pahe = AHE_DESKTOP; |
+ return S_OK; |
+ } |
+ |
+ FilePath user_data_dir; |
+ if (!PathService::Get(chrome::DIR_USER_DATA, &user_data_dir)) { |
+ AtlTrace("Failed to get chrome's data dir path, E_FAIL\n"); |
+ return E_FAIL; |
+ } |
+ |
+ HWND chrome_window = ::FindWindowEx(HWND_MESSAGE, NULL, |
+ chrome::kMessageWindowClass, |
+ user_data_dir.value().c_str()); |
+ if (chrome_window) { |
+ AtlTrace("Found chrome window %p\n", chrome_window); |
+ // The failure cases below are deemed to happen due to the inherently racy |
+ // procedure of going from chrome's window to process handle during which |
+ // chrome might have exited. Failing here would probably just cause the |
+ // user to retry at which point we would do the right thing. |
+ DWORD chrome_pid = 0; |
+ ::GetWindowThreadProcessId(chrome_window, &chrome_pid); |
+ if (!chrome_pid) { |
+ AtlTrace("Failed to get chrome's PID, E_FAIL\n"); |
+ return E_FAIL; |
+ } |
+ base::win::ScopedHandle process( |
+ ::OpenProcess(PROCESS_QUERY_INFORMATION, FALSE, chrome_pid)); |
+ if (!process.IsValid()) { |
+ AtlTrace("Failed to open chrome's process [%d], E_FAIL\n", chrome_pid); |
+ return E_FAIL; |
+ } |
+ if (IsImmersiveProcess(process.Get())) { |
+ AtlTrace("Chrome [%d] is inmmersive, AHE_IMMERSIVE\n", chrome_pid); |
+ chrome_mode_ = ECHUIM_IMMERSIVE; |
+ *pahe = AHE_IMMERSIVE; |
+ } else { |
+ AtlTrace("Chrome [%d] is Desktop, AHE_DESKTOP\n"); |
+ chrome_mode_ = ECHUIM_DESKTOP; |
+ *pahe = AHE_DESKTOP; |
+ } |
+ return S_OK; |
+ } |
+ |
+ if (IsImmersiveProcess(GetCurrentProcess())) { |
+ AtlTrace("Current process is inmmersive, AHE_IMMERSIVE\n"); |
+ *pahe = AHE_IMMERSIVE; |
+ return S_OK; |
+ } |
+ |
+ if ((launch_scheme_ == INTERNET_SCHEME_FILE) && |
+ (GetLaunchMode() != ECHUIM_DESKTOP)) { |
+ AtlTrace("INTERNET_SCHEME_FILE, mode != ECHUIM_DESKTOP, AHE_IMMERSIVE\n"); |
+ *pahe = AHE_IMMERSIVE; |
+ return S_OK; |
+ } |
+ |
+ AtlTrace("Fallback is AHE_DESKTOP\n"); |
+ *pahe = AHE_DESKTOP; |
+ return S_OK; |
+} |
+ |
+STDMETHODIMP CommandExecuteImpl::Execute() { |
+ AtlTrace("In %hs\n", __FUNCTION__); |
+ |
+ if (integrity_level_ == base::HIGH_INTEGRITY) |
+ return LaunchDesktopChrome(); |
+ |
+ EC_HOST_UI_MODE mode = GetLaunchMode(); |
+ if (mode == ECHUIM_DESKTOP) |
+ return LaunchDesktopChrome(); |
+ |
+ HRESULT hr = E_FAIL; |
+ CComPtr<IApplicationActivationManager> activation_manager; |
+ hr = activation_manager.CoCreateInstance(CLSID_ApplicationActivationManager); |
+ if (!activation_manager) { |
+ AtlTrace("Failed to get the activation manager, error 0x%x\n", hr); |
+ return S_OK; |
+ } |
+ |
+ string16 app_id = delegate_execute::GetAppId(chrome_exe_); |
+ |
+ DWORD pid = 0; |
+ if (launch_scheme_ == INTERNET_SCHEME_FILE) { |
+ AtlTrace("Activating for file\n"); |
+ hr = activation_manager->ActivateApplication(app_id.c_str(), |
+ verb_.c_str(), |
+ AO_NOERRORUI, |
+ &pid); |
+ } else { |
+ AtlTrace("Activating for protocol\n"); |
+ hr = activation_manager->ActivateForProtocol(app_id.c_str(), |
+ item_array_, |
+ &pid); |
+ } |
+ if (hr == E_APPLICATION_NOT_REGISTERED) { |
+ AtlTrace("Metro chrome is not registered, launching in desktop\n"); |
+ return LaunchDesktopChrome(); |
+ } |
+ AtlTrace("Metro Chrome launch, pid=%d, returned 0x%x\n", pid, hr); |
+ return S_OK; |
+} |
+ |
+STDMETHODIMP CommandExecuteImpl::Initialize(LPCWSTR name, |
+ IPropertyBag* bag) { |
+ AtlTrace("In %hs\n", __FUNCTION__); |
+ if (!FindChromeExe(&chrome_exe_)) |
+ return E_FAIL; |
+ delegate_execute::UpdateChromeIfNeeded(chrome_exe_); |
+ if (name) { |
+ AtlTrace("Verb is %S\n", name); |
+ verb_ = name; |
+ } |
+ |
+ base::GetProcessIntegrityLevel(base::GetCurrentProcessHandle(), |
+ &integrity_level_); |
+ if (integrity_level_ == base::HIGH_INTEGRITY) { |
+ AtlTrace("Delegate execute launched in high integrity level\n"); |
+ } |
+ return S_OK; |
+} |
+ |
+STDMETHODIMP CommandExecuteImpl::SetSelection(IShellItemArray* item_array) { |
+ AtlTrace("In %hs\n", __FUNCTION__); |
+ item_array_ = item_array; |
+ return S_OK; |
+} |
+ |
+STDMETHODIMP CommandExecuteImpl::GetSelection(REFIID riid, void** selection) { |
+ AtlTrace("In %hs\n", __FUNCTION__); |
+ return S_OK; |
+} |
+ |
+STDMETHODIMP CommandExecuteImpl::AllowForegroundTransfer(void* reserved) { |
+ AtlTrace("In %hs\n", __FUNCTION__); |
+ return S_OK; |
+} |
+ |
+// Returns false if chrome.exe cannot be found. |
+// static |
+bool CommandExecuteImpl::FindChromeExe(FilePath* chrome_exe) { |
+ AtlTrace("In %hs\n", __FUNCTION__); |
+ // Look for chrome.exe one folder above delegate_execute.exe (as expected in |
+ // Chrome installs). Failing that, look for it alonside delegate_execute.exe. |
+ FilePath dir_exe; |
+ if (!PathService::Get(base::DIR_EXE, &dir_exe)) { |
+ AtlTrace("Failed to get current exe path\n"); |
+ return false; |
+ } |
+ |
+ *chrome_exe = dir_exe.DirName().Append(chrome::kBrowserProcessExecutableName); |
+ if (!file_util::PathExists(*chrome_exe)) { |
+ *chrome_exe = dir_exe.Append(chrome::kBrowserProcessExecutableName); |
+ if (!file_util::PathExists(*chrome_exe)) { |
+ AtlTrace("Failed to find chrome exe file\n"); |
+ return false; |
+ } |
+ } |
+ |
+ AtlTrace("Got chrome exe path as %ls\n", chrome_exe->value().c_str()); |
+ return true; |
+} |
+ |
+bool CommandExecuteImpl::GetLaunchScheme( |
+ string16* display_name, INTERNET_SCHEME* scheme) { |
+ if (!item_array_) |
+ return false; |
+ |
+ ATLASSERT(display_name); |
+ ATLASSERT(scheme); |
+ |
+ DWORD count = 0; |
+ item_array_->GetCount(&count); |
+ |
+ if (count != 1) { |
+ AtlTrace("Cannot handle %d elements in the IShellItemArray\n", count); |
+ return false; |
+ } |
+ |
+ CComPtr<IEnumShellItems> items; |
+ item_array_->EnumItems(&items); |
+ CComPtr<IShellItem> shell_item; |
+ HRESULT hr = items->Next(1, &shell_item, &count); |
+ if (hr != S_OK) { |
+ AtlTrace("Failed to read element from the IShellItemsArray\n"); |
+ return false; |
+ } |
+ |
+ base::win::ScopedCoMem<wchar_t> name; |
+ hr = shell_item->GetDisplayName(SIGDN_URL, &name); |
+ if (hr != S_OK) { |
+ AtlTrace("Failed to get display name\n"); |
+ return false; |
+ } |
+ |
+ AtlTrace("Display name is [%ls]\n", name); |
+ |
+ wchar_t scheme_name[16]; |
+ URL_COMPONENTS components = {0}; |
+ components.lpszScheme = scheme_name; |
+ components.dwSchemeLength = sizeof(scheme_name)/sizeof(scheme_name[0]); |
+ |
+ components.dwStructSize = sizeof(components); |
+ if (!InternetCrackUrlW(name, 0, 0, &components)) { |
+ AtlTrace("Failed to crack url %ls\n", name); |
+ return false; |
+ } |
+ |
+ AtlTrace("Launch scheme is [%ls] (%d)\n", scheme_name, components.nScheme); |
+ *display_name = name; |
+ *scheme = components.nScheme; |
+ return true; |
+} |
+ |
+HRESULT CommandExecuteImpl::LaunchDesktopChrome() { |
+ AtlTrace("In %hs\n", __FUNCTION__); |
+ string16 display_name = display_name_; |
+ |
+ switch (launch_scheme_) { |
+ case INTERNET_SCHEME_FILE: |
+ // If anything other than chrome.exe is passed in the display name we |
+ // should honor it. For e.g. If the user clicks on a html file when |
+ // chrome is the default we should treat it as a parameter to be passed |
+ // to chrome. |
+ if (display_name.find(L"chrome.exe") != string16::npos) |
+ display_name.clear(); |
+ break; |
+ |
+ default: |
+ break; |
+ } |
+ |
+ string16 command_line = L"\""; |
+ command_line += chrome_exe_.value(); |
+ command_line += L"\""; |
+ |
+ if (!parameters_.empty()) { |
+ AtlTrace("Adding parameters %ls to command line\n", parameters_.c_str()); |
+ command_line += L" "; |
+ command_line += parameters_.c_str(); |
+ } |
+ |
+ if (!display_name.empty()) { |
+ command_line += L" -- "; |
+ command_line += display_name; |
+ } |
+ |
+ AtlTrace("Formatted command line is %ls\n", command_line.c_str()); |
+ |
+ PROCESS_INFORMATION proc_info = {0}; |
+ BOOL ret = CreateProcess(NULL, const_cast<LPWSTR>(command_line.c_str()), |
+ NULL, NULL, FALSE, 0, NULL, NULL, &start_info_, |
+ &proc_info); |
+ if (ret) { |
+ AtlTrace("Process id is %d\n", proc_info.dwProcessId); |
+ CloseHandle(proc_info.hProcess); |
+ CloseHandle(proc_info.hThread); |
+ } else { |
+ AtlTrace("Process launch failed, error %d\n", ::GetLastError()); |
+ } |
+ |
+ return S_OK; |
+} |
+ |
+EC_HOST_UI_MODE CommandExecuteImpl::GetLaunchMode() { |
+ // We are to return chrome's mode if chrome exists else we query our embedder |
+ // IServiceProvider and learn the mode from them. |
+ static bool launch_mode_determined = false; |
+ static EC_HOST_UI_MODE launch_mode = ECHUIM_DESKTOP; |
+ |
+ const char* modes[] = { "Desktop", "Inmmersive", "SysLauncher", "??" }; |
+ |
+ if (launch_mode_determined) |
+ return launch_mode; |
+ |
+ if (chrome_mode_ != ECHUIM_SYSTEM_LAUNCHER) { |
+ launch_mode = chrome_mode_; |
+ AtlTrace("Launch mode is that of chrome, %s\n", modes[launch_mode]); |
+ launch_mode_determined = true; |
+ return launch_mode; |
+ } |
+ |
+ if (parameters_ == ASCIIToWide(switches::kForceImmersive)) { |
+ launch_mode = ECHUIM_IMMERSIVE; |
+ AtlTrace("Launch mode forced to %s\n", modes[launch_mode]); |
+ launch_mode_determined = true; |
+ return launch_mode; |
+ } |
+ |
+ CComPtr<IExecuteCommandHost> host; |
+ CComQIPtr<IServiceProvider> service_provider = m_spUnkSite; |
+ if (service_provider) { |
+ service_provider->QueryService(IID_IExecuteCommandHost, &host); |
+ if (host) { |
+ host->GetUIMode(&launch_mode); |
+ } else { |
+ AtlTrace("Failed to get IID_IExecuteCommandHost. Assuming desktop\n"); |
+ } |
+ } else { |
+ AtlTrace("Failed to get IServiceProvider. Assuming desktop mode\n"); |
+ } |
+ AtlTrace("Launch mode is %s\n", modes[launch_mode]); |
+ launch_mode_determined = true; |
+ return launch_mode; |
+} |