Bug 1860271 - Resolved launch on login checkbox and infobar bugs when user created Startup shortcut exists r=nalexander,settings-reviewers

Differential Revision: https://phabricator.services.mozilla.com/D191763

browser/components/BrowserGlue.sys.mjs

@@ -1237,18 +1237,24 @@ BrowserGlue.prototype = {
         ].getService(Ci.nsIToolkitProfileService);
         if (
           AppConstants.platform == "win" &&
-          Services.prefs.getBoolPref(launchOnLoginPref) &&
           !profileSvc.startWithLastProfile
         ) {
           // If we don't start with last profile, the user
           // likely sees the profile selector on launch.
-          Services.prefs.setBoolPref(launchOnLoginPref, false);
-          Services.telemetry.setEventRecordingEnabled("launch_on_login", true);
+          if (Services.prefs.getBoolPref(launchOnLoginPref)) {
+            Services.telemetry.setEventRecordingEnabled(
+              "launch_on_login",
+              true
+            );
             Services.telemetry.recordEvent(
               "launch_on_login",
-            "last_profile_disable:",
+              "last_profile_disable",
               "startup"
             );
+          }
+          Services.prefs.setBoolPref(launchOnLoginPref, false);
+          // Only remove registry key, not shortcut here as we can assume
+          // if a user manually created a shortcut they want this behavior.
           await lazy.WindowsLaunchOnLogin.removeLaunchOnLoginRegistryKey();
         }
         break;

browser/components/newtab/lib/ASRouterTargeting.jsm

@@ -35,6 +35,7 @@ ChromeUtils.defineESModuleGetters(lazy, {
   TargetingContext: "resource://messaging-system/targeting/Targeting.sys.mjs",
   TelemetryEnvironment: "resource://gre/modules/TelemetryEnvironment.sys.mjs",
   TelemetrySession: "resource://gre/modules/TelemetrySession.sys.mjs",
+  WindowsLaunchOnLogin: "resource://gre/modules/WindowsLaunchOnLogin.sys.mjs",
 });
 
 XPCOMUtils.defineLazyModuleGetters(lazy, {
@@ -836,6 +837,13 @@ const TargetingGetters = {
     return QueryCache.getters.doesAppNeedPrivatePin.get();
   },
 
+  get launchOnLoginEnabled() {
+    if (AppConstants.platform !== "win") {
+      return false;
+    }
+    return lazy.WindowsLaunchOnLogin.getLaunchOnLoginEnabled();
+  },
+
   /**
    * Is this invocation running in background task mode?
    *

browser/components/newtab/lib/OnboardingMessageProvider.jsm

@@ -990,7 +990,8 @@ const BASE_MESSAGES = () => [
       lifetime: 1,
     },
     trigger: { id: "defaultBrowserCheck" },
-    targeting: `source == 'newtab' && 'browser.startup.windowsLaunchOnLogin.disableLaunchOnLoginPrompt'|preferenceValue == false
+    targeting: `source == 'newtab' && !launchOnLoginEnabled
+    && 'browser.startup.windowsLaunchOnLogin.disableLaunchOnLoginPrompt'|preferenceValue == false
     && 'browser.startup.windowsLaunchOnLogin.enabled'|preferenceValue == true && isDefaultBrowser && !activeNotifications`,
   },
   {
@@ -1053,7 +1054,8 @@ const BASE_MESSAGES = () => [
       lifetime: 1,
     },
     trigger: { id: "defaultBrowserCheck" },
-    targeting: `source == 'newtab' && 'browser.startup.windowsLaunchOnLogin.disableLaunchOnLoginPrompt'|preferenceValue == false
+    targeting: `source == 'newtab' && !launchOnLoginEnabled
+    && 'browser.startup.windowsLaunchOnLogin.disableLaunchOnLoginPrompt'|preferenceValue == false
     && 'browser.startup.windowsLaunchOnLogin.enabled'|preferenceValue == true && isDefaultBrowser && !activeNotifications
     && messageImpressions.INFOBAR_LAUNCH_ON_LOGIN[messageImpressions.INFOBAR_LAUNCH_ON_LOGIN | length - 1]
     && messageImpressions.INFOBAR_LAUNCH_ON_LOGIN[messageImpressions.INFOBAR_LAUNCH_ON_LOGIN | length - 1] <

browser/components/preferences/main.js

@@ -423,7 +423,15 @@ var gMainPane = {
       NimbusFeatures.windowsLaunchOnLogin.recordExposureEvent({
         once: true,
       });
-      if (NimbusFeatures.windowsLaunchOnLogin.getVariable("enabled")) {
+      // We do a check here for startWithLastProfile as we could
+      // have disabled the pref for the user before they're ever
+      // exposed to the experiment on a new profile.
+      if (
+        NimbusFeatures.windowsLaunchOnLogin.getVariable("enabled") &&
+        Cc["@mozilla.org/toolkit/profile-service;1"].getService(
+          Ci.nsIToolkitProfileService
+        ).startWithLastProfile
+      ) {
         document.getElementById("windowsLaunchOnLoginBox").hidden = false;
       }
     }
@@ -659,17 +667,8 @@ var gMainPane = {
         let launchOnLoginCheckbox = document.getElementById(
           "windowsLaunchOnLogin"
         );
-        let registryName = WindowsLaunchOnLogin.getLaunchOnLoginRegistryName();
-        WindowsLaunchOnLogin.withLaunchOnLoginRegistryKey(async wrk => {
-          try {
-            // Reflect registry key value in about:preferences
-            launchOnLoginCheckbox.checked = wrk.hasValue(registryName);
-          } catch (e) {
-            // We should only end up here if we fail to open the registry
-            console.error("Failed to open Windows registry", e);
-          }
-        });
-
+        launchOnLoginCheckbox.checked =
+          WindowsLaunchOnLogin.getLaunchOnLoginEnabled();
         let approvedByWindows = WindowsLaunchOnLogin.getLaunchOnLoginApproved();
         launchOnLoginCheckbox.disabled = !approvedByWindows;
         document.getElementById("windowsLaunchOnLoginDisabledBox").hidden =
@@ -1635,7 +1634,7 @@ var gMainPane = {
     startupPref.value = newValue;
   },
 
-  onWindowsLaunchOnLoginChange(event) {
+  async onWindowsLaunchOnLoginChange(event) {
     if (AppConstants.platform !== "win") {
       return;
     }
@@ -1647,8 +1646,9 @@ var gMainPane = {
         true
       );
     } else {
-      // windowsLaunchOnLogin has been unchecked: delete registry key
+      // windowsLaunchOnLogin has been unchecked: delete registry key and shortcut
       WindowsLaunchOnLogin.removeLaunchOnLoginRegistryKey();
+      await WindowsLaunchOnLogin.removeLaunchOnLoginShortcuts();
     }
   },
 

browser/components/shell/nsIWindowsShellService.idl

@@ -52,6 +52,29 @@ interface nsIWindowsShellService : nsISupports
     in AString aDescription, in nsIFile aIconFile, in unsigned short aIconIndex,
     in AString aAppUserModelId, in AString aShortcutFolder, in AString aShortcutName);
 
+  /*
+   * Searches the %USERPROFILE%\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup
+   * folder and returns an array with the path of all shortcuts with a target matching the
+   * current Firefox install location. The AUMID isn't required here as we are only looking
+   * for the currently running binary, whether that's firefox.exe or the private browsing
+   * proxy executable.
+   *
+   * It is possible to return an empty array if no shortcuts are found.
+   *
+   * @return An array of paths for all launch on login shortcuts.s
+   *
+   * @throws NS_ERROR_ABORT
+   *         if instance cannot be created.
+   * @throws NS_ERROR_FILE_NOT_FOUND
+   *         if %USERPROFILE%\AppData\Roaming\ cannot be opened.
+   * @throws NS_ERROR_FAILURE
+   *         if the executable file cannot be found.
+   * @throws NS_ERROR_FILE_UNRECOGNIZED_PATH
+   *         if the executable file cannot be converted into a string.
+   */
+
+  Array<AString> getLaunchOnLoginShortcuts();
+
   /*
    * Pin the current app to the taskbar. If aPrivateBrowsing is true, the
    * Private Browsing version of the app (with a different icon and launch

browser/components/shell/nsWindowsShellService.cpp

@@ -41,6 +41,7 @@
 
 #include <windows.h>
 #include <shellapi.h>
+#include <strsafe.h>
 #include <propvarutil.h>
 #include <propkey.h>
 
@@ -911,6 +912,103 @@ nsWindowsShellService::CreateShortcut(
   return NS_OK;
 }
 
+NS_IMETHODIMP
+nsWindowsShellService::GetLaunchOnLoginShortcuts(
+    nsTArray<nsString>& aShortcutPaths) {
+  aShortcutPaths.Clear();
+
+  // Get AppData\\Roaming folder using a known folder ID
+  RefPtr<IKnownFolderManager> fManager;
+  RefPtr<IKnownFolder> roamingAppData;
+  LPWSTR roamingAppDataW;
+  nsString roamingAppDataNS;
+  HRESULT hr =
+      CoCreateInstance(CLSID_KnownFolderManager, nullptr, CLSCTX_INPROC_SERVER,
+                       IID_IKnownFolderManager, getter_AddRefs(fManager));
+  if (FAILED(hr)) {
+    return NS_ERROR_ABORT;
+  }
+  fManager->GetFolder(FOLDERID_RoamingAppData,
+                      roamingAppData.StartAssignment());
+  hr = roamingAppData->GetPath(0, &roamingAppDataW);
+  if (FAILED(hr)) {
+    return NS_ERROR_FILE_NOT_FOUND;
+  }
+
+  // Append startup folder to AppData\\Roaming
+  roamingAppDataNS.Assign(roamingAppDataW);
+  CoTaskMemFree(roamingAppDataW);
+  nsString startupFolder =
+      roamingAppDataNS +
+      u"\\Microsoft\\Windows\\Start Menu\\Programs\\Startup"_ns;
+  nsString startupFolderWildcard = startupFolder + u"\\*.lnk"_ns;
+
+  // Get known path for binary file for later comparison with shortcuts.
+  // Returns lowercase file path which should be fine for Windows as all
+  // directories and files are case-insensitive by default.
+  RefPtr<nsIFile> binFile;
+  nsString binPath;
+  nsresult rv = XRE_GetBinaryPath(binFile.StartAssignment());
+  if (FAILED(rv)) {
+    return NS_ERROR_FAILURE;
+  }
+  rv = binFile->GetPath(binPath);
+  if (FAILED(rv)) {
+    return NS_ERROR_FILE_UNRECOGNIZED_PATH;
+  }
+
+  // Check for if first file exists with a shortcut extension (.lnk)
+  WIN32_FIND_DATAW ffd;
+  HANDLE fileHandle = INVALID_HANDLE_VALUE;
+  fileHandle = FindFirstFileW(startupFolderWildcard.get(), &ffd);
+  if (fileHandle == INVALID_HANDLE_VALUE) {
+    // This means that no files were found in the folder which
+    // doesn't imply an error. Most of the time the user won't
+    // have any shortcuts here.
+    return NS_OK;
+  }
+
+  do {
+    // Extract shortcut target path from every
+    // shortcut in the startup folder.
+    nsString fileName(ffd.cFileName);
+    RefPtr<IShellLinkW> link;
+    RefPtr<IPersistFile> ppf;
+    nsString target;
+    target.SetLength(MAX_PATH);
+    CoCreateInstance(CLSID_ShellLink, nullptr, CLSCTX_INPROC_SERVER,
+                     IID_IShellLinkW, getter_AddRefs(link));
+    hr = link->QueryInterface(IID_IPersistFile, getter_AddRefs(ppf));
+    if (NS_WARN_IF(FAILED(hr))) {
+      continue;
+    }
+    nsString filePath = startupFolder + u"\\"_ns + fileName;
+    hr = ppf->Load(filePath.get(), STGM_READ);
+    if (NS_WARN_IF(FAILED(hr))) {
+      continue;
+    }
+    hr = link->Resolve(nullptr, SLR_NO_UI);
+    if (NS_WARN_IF(FAILED(hr))) {
+      continue;
+    }
+    hr = link->GetPath(target.get(), MAX_PATH, nullptr, 0);
+    if (NS_WARN_IF(FAILED(hr))) {
+      continue;
+    }
+
+    // If shortcut target matches known binary file value
+    // then add the path to the shortcut as a valid
+    // startup shortcut. This has to be a substring search as
+    // the user could have added unknown command line arguments
+    // to the shortcut.
+    if (_wcsnicmp(target.get(), binPath.get(), binPath.Length()) == 0) {
+      aShortcutPaths.AppendElement(filePath);
+    }
+  } while (FindNextFile(fileHandle, &ffd) != 0);
+  FindClose(fileHandle);
+  return NS_OK;
+}
+
 // Look for any installer-created shortcuts in the given location that match
 // the given AUMID and EXE Path. If one is found, output its path.
 //

toolkit/modules/WindowsLaunchOnLogin.sys.mjs

@@ -84,6 +84,30 @@ export var WindowsLaunchOnLogin = {
     }
   },
 
+  /**
+   * Gets a list of all launch on login shortcuts in the
+   * %USERNAME%\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup folder
+   * that point to the current Firefox executable.
+   */
+  getLaunchOnLoginShortcutList() {
+    let shellService = Cc["@mozilla.org/browser/shell-service;1"].getService(
+      Ci.nsIWindowsShellService
+    );
+    return shellService.getLaunchOnLoginShortcuts();
+  },
+
+  /**
+   * Safely removes all launch on login shortcuts in the
+   * %USERNAME%\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup folder
+   * that point to the current Firefox executable.
+   */
+  async removeLaunchOnLoginShortcuts() {
+    let shortcuts = this.getLaunchOnLoginShortcutList();
+    for (let i = 0; i < shortcuts.length; i++) {
+      await IOUtils.remove(shortcuts[i]);
+    }
+  },
+
   /**
    * Checks if Windows launch on login was independently enabled or disabled
    * by the user in the Windows Startup Apps menu. The registry key that
@@ -119,6 +143,38 @@ export var WindowsLaunchOnLogin = {
     return true;
   },
 
+  /**
+   * Checks if Windows launch on login has an existing registry key or user-created shortcut in
+   * %USERNAME%\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup. The registry key that
+   * stores this information should not be modified.
+   */
+  getLaunchOnLoginEnabled() {
+    let registryName = this.getLaunchOnLoginRegistryName();
+    let regExists = false;
+    let shortcutExists = false;
+    this.withLaunchOnLoginRegistryKey(wrk => {
+      try {
+        // Start by checking if registry key exists.
+        regExists = wrk.hasValue(registryName);
+      } catch (e) {
+        // We should only end up here if we fail to open the registry
+        console.error("Failed to open Windows registry", e);
+      }
+    });
+    if (!regExists) {
+      shortcutExists = !!this.getLaunchOnLoginShortcutList().length;
+    }
+    // Even if a user disables it later on we want the launch on login
+    // infobar to remain disabled as the user is aware of the option.
+    if (regExists || shortcutExists) {
+      Services.prefs.setBoolPref(
+        "browser.startup.windowsLaunchOnLogin.disableLaunchOnLoginPrompt",
+        true
+      );
+    }
+    return regExists || shortcutExists;
+  },
+
   /**
    * Quotes a string for use as a single command argument, using Windows quoting
    * conventions.