Bug 1176399 - Multiple requests for master password when GMail OAuth2 is enabled.

mailnews/base/public/nsIMsgAsyncPrompter.idl

@@ -35,20 +35,36 @@ interface nsIMsgAsyncPrompter : nsISupports {
                             in nsIMsgAsyncPromptListener aCaller);
 };
 
+[scriptable, function, uuid(acca94c9-378e-46e3-9a91-6655bf9c91a3)]
+interface nsIMsgAsyncPromptCallback : nsISupports {
+  /**
+   * Called when an auth result is available. Can be passed as a function.
+   *
+   * @param aResult   True if there is auth information available following the
+   *                    prompt, false otherwise.
+   */
+  void onAuthResult(in boolean aResult);
+};
+
 /**
  * This is used in combination with nsIMsgAsyncPrompter.
  */
 [scriptable, uuid(fb5307a3-39d0-462e-92c8-c5c288a2612f)]
 interface nsIMsgAsyncPromptListener : nsISupports {
   /**
-   * Called when the listener should do its prompt. The listener
+   * This method has been deprecated, please use onPromptStartAsync instead.
-   * should not return until the prompt is complete.
-   *
-   * @return  True if there is auth information available following the prompt,
-   *          false otherwise.
    */
   boolean onPromptStart();
 
+  /**
+   * Called when the listener should do its prompt. This can happen
+   * synchronously or asynchronously, but in any case when done the callback
+   * method should be called.
+   *
+   * @param aCallback   The callback to execute when auth prompt has completed.
+   */
+  void onPromptStartAsync(in nsIMsgAsyncPromptCallback aCallback);
+
   /**
    * Called in the case that the queued prompt was combined with another and
    * there is now authentication information available.

mailnews/base/src/msgAsyncPrompter.js

@@ -2,6 +2,7 @@
  * 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/. */
 
+Components.utils.import("resource://gre/modules/Deprecated.jsm");
 Components.utils.import("resource://gre/modules/Services.jsm");
 Components.utils.import("resource://gre/modules/Task.jsm");
 Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
@@ -19,28 +20,46 @@ runnablePrompter.prototype = {
   _asyncPrompter: null,
   _hashKey: null,
 
+  _promiseAuthPrompt: function(listener) {
+    return new Promise((resolve, reject) => {
+      try {
+        listener.onPromptStartAsync({ onAuthResult: resolve });
+      } catch (e) {
+        if (e.result == Components.results.NS_ERROR_XPC_JSOBJECT_HAS_NO_FUNCTION_NAMED) {
+          // Fall back to onPromptStart, for add-ons compat
+          Deprecated.warning("onPromptStart has been replaced by onPromptStartAsync",
+                             "https://bugzilla.mozilla.org/show_bug.cgi?id=1176399");
+          let ok = listener.onPromptStart();
+          resolve(ok);
+        } else {
+          reject(e);
+        }
+      }
+    });
+  },
+
   run: Task.async(function *() {
     yield Services.logins.initializationPromise;
     this._asyncPrompter._log.debug("Running prompt for " + this._hashKey);
     let prompter = this._asyncPrompter._pendingPrompts[this._hashKey];
     let ok = false;
     try {
-      ok = prompter.first.onPromptStart();
+      ok = yield this._promiseAuthPrompt(prompter.first);
-    }
+    } catch (ex) {
-    catch (ex) {
       Components.utils.reportError("runnablePrompter:run: " + ex + "\n");
+      prompter.first.onPromptCanceled();
     }
 
     delete this._asyncPrompter._pendingPrompts[this._hashKey];
 
     for (var consumer of prompter.consumers) {
       try {
-        if (ok)
+        if (ok) {
           consumer.onPromptAuthAvailable();
-        else
+        } else {
           consumer.onPromptCanceled();
         }
-      catch (ex) {
+      } catch (ex) {
         // Log the error for extension devs and others to pick up.
         Components.utils.reportError("runnablePrompter:run: consumer.onPrompt* reported an exception: " + ex + "\n");
       }

mailnews/base/src/msgOAuth2Module.js

@@ -126,19 +126,43 @@ OAuth2Module.prototype = {
       }
     }
 
-    // Otherwise, we need a new login, so create one and fill it in.
+    // Unless the token is null, we need to create and fill in a new login
+    if (token) {
       let login = Cc["@mozilla.org/login-manager/loginInfo;1"]
                     .createInstance(Ci.nsILoginInfo);
       login.init(this._loginUrl, null, this._scope, this._username, token,
         '', '');
       loginMgr.addLogin(login);
+    }
     return token;
   },
 
   connect(aWithUI, aListener) {
-    this._oauth.connect(() => aListener.onSuccess(this._oauth.accessToken),
+    let oauth = this._oauth;
-                        x => aListener.onFailure(x),
+    let promptlistener = {
-                        aWithUI, false);
+      onPromptStartAsync: function(callback) {
+        oauth.connect(() => {
+          this.onPromptAuthAvailable();
+          callback.onAuthResult(true);
+        }, (err) => {
+          this.onPromptCanceled();
+          callback.onAuthResult(false);
+        }, aWithUI, false);
+      },
+
+      onPromptAuthAvailable: function() {
+        aListener.onSuccess(oauth.accessToken);
+      },
+      onPromptCanceled: function() {
+        aListener.onFailure(Components.results.NS_ERROR_ABORT);
+      },
+      onPromptStart: function() {}
+    };
+
+    let asyncprompter = Components.classes["@mozilla.org/messenger/msgAsyncPrompter;1"]
+                                  .getService(Components.interfaces.nsIMsgAsyncPrompter);
+    let promptkey = this._loginUrl + "/" + this._username;
+    asyncprompter.queueAsyncAuthPrompt(promptkey, false, promptlistener);
   },
 
   buildXOAuth2String() {

mailnews/imap/src/nsImapProtocol.cpp

@@ -8513,6 +8513,13 @@ nsresult nsImapProtocol::GetPassword(nsCString &password,
   return rv;
 }
 
+NS_IMETHODIMP nsImapProtocol::OnPromptStartAsync(nsIMsgAsyncPromptCallback *aCallback)
+{
+  bool result = false;
+  OnPromptStart(&result);
+  return aCallback->OnAuthResult(result);
+}
+
 // This is called from the UI thread.
 NS_IMETHODIMP
 nsImapProtocol::OnPromptStart(bool *aResult)

mailnews/local/src/nsPop3Protocol.cpp

@@ -740,6 +740,13 @@ nsresult nsPop3Protocol::StartGetAsyncPassword(Pop3StatesEnum aNextState)
   return rv;
 }
 
+NS_IMETHODIMP nsPop3Protocol::OnPromptStartAsync(nsIMsgAsyncPromptCallback *aCallback)
+{
+  bool result = false;
+  OnPromptStart(&result);
+  return aCallback->OnAuthResult(result);
+}
+
 NS_IMETHODIMP nsPop3Protocol::OnPromptStart(bool *aResult)
 {
   MOZ_LOG(POP3LOGMODULE, LogLevel::Debug, (POP3LOG("OnPromptStart()")));

mailnews/news/src/nsNNTPProtocol.cpp

@@ -2472,6 +2472,13 @@ nsresult nsNNTPProtocol::PasswordResponse()
   return NS_ERROR_FAILURE;
 }
 
+NS_IMETHODIMP nsNNTPProtocol::OnPromptStartAsync(nsIMsgAsyncPromptCallback *aCallback)
+{
+  bool result = false;
+  OnPromptStart(&result);
+  return aCallback->OnAuthResult(result);
+}
+
 NS_IMETHODIMP nsNNTPProtocol::OnPromptStart(bool *authAvailable)
 {
   NS_ENSURE_ARG_POINTER(authAvailable);