[gnome-shell/jrocha/polkit-dialog-without-passwd: 1/2] polkitAgent: Use dialog as confirmation when the user has no password



commit 903036e244989cb5a66fdf19c90a397dc7460ff5
Author: Joaquim Rocha <jrocha endlessm com>
Date:   Wed Jul 19 13:42:34 2017 +0200

    polkitAgent: Use dialog as confirmation when the user has no password
    
    When a user has no password and a polkit authentication is started,
    instead of blindly initiating the admin session, the regular
    "Authentication Requested" dialog is shown (but without the password
    entry). This means that the user's admin session is only effectively
    started after the user chooses to proceed with the authentication which
    provides an extra confirmation step that can be vital for critical
    tasks.
    
    Ideally we should use a different wording than "authentication" when the
    user has no password set, and use "confirmation" instead. However polkit
    already sends the requests with such messages (e.g. "Authentication is
    required to configure software repositories"), and it's important to
    show those to the user, so this patch keeps the regular wording.

 js/ui/components/polkitAgent.js | 37 +++++++++++++++++++++++++++++--------
 1 file changed, 29 insertions(+), 8 deletions(-)
---
diff --git a/js/ui/components/polkitAgent.js b/js/ui/components/polkitAgent.js
index 37afa8f64..b99e472c9 100644
--- a/js/ui/components/polkitAgent.js
+++ b/js/ui/components/polkitAgent.js
@@ -27,6 +27,11 @@ var WORK_SPINNER_ICON_SIZE = 16;
 var WORK_SPINNER_ANIMATION_DELAY = 1.0;
 var WORK_SPINNER_ANIMATION_TIME = 0.3;
 
+const DialogMode = {
+    AUTH: 0,
+    CONFIRM: 1
+};
+
 var AuthenticationDialog = new Lang.Class({
     Name: 'AuthenticationDialog',
     Extends: ModalDialog.ModalDialog,
@@ -59,10 +64,6 @@ var AuthenticationDialog = new Lang.Class({
 
         this._user = AccountsService.UserManager.get_default().get_user(userName);
         let userRealName = this._user.get_real_name()
-        this._userLoadedId = this._user.connect('notify::is_loaded',
-                                                Lang.bind(this, this._onUserChanged));
-        this._userChangedId = this._user.connect('changed',
-                                                 Lang.bind(this, this._onUserChanged));
 
         // Special case 'root'
         let userIsRoot = false;
@@ -98,10 +99,14 @@ var AuthenticationDialog = new Lang.Class({
                           y_align: St.Align.MIDDLE });
         }
 
-        this._onUserChanged();
-
         this._passwordBox = new St.BoxLayout({ vertical: false, style_class: 'prompt-dialog-password-box' });
         content.messageBox.add(this._passwordBox);
+
+        // onUserChanged needs to be called after we have the _passwordBox set
+        this._user.connect('notify::is_loaded', Lang.bind(this, this._onUserChanged));
+        this._user.connect('changed', Lang.bind(this, this._onUserChanged));
+        this._onUserChanged();
+
         this._passwordLabel = new St.Label(({ style_class: 'prompt-dialog-password-label' }));
         this._passwordBox.add(this._passwordLabel, { y_fill: false, y_align: St.Align.MIDDLE });
         this._passwordEntry = new St.Entry({ style_class: 'prompt-dialog-password-entry',
@@ -182,7 +187,7 @@ var AuthenticationDialog = new Lang.Class({
         }
     },
 
-    performAuthentication: function() {
+    _initiateSession: function() {
         this.destroySession();
         this._session = new PolkitAgent.Session({ identity: this._identityToAuth,
                                                   cookie: this._cookie });
@@ -193,6 +198,12 @@ var AuthenticationDialog = new Lang.Class({
         this._session.initiate();
     },
 
+    performAuthentication: function() {
+        if (this._mode == DialogMode.AUTH)
+            this._initiateSession();
+        this._ensureOpen();
+    },
+
     _ensureOpen: function() {
         // NOTE: ModalDialog.open() is safe to call if the dialog is
         // already open - it just returns true without side-effects
@@ -243,7 +254,10 @@ var AuthenticationDialog = new Lang.Class({
     },
 
     _onAuthenticateButtonPressed: function() {
-        this._onEntryActivate();
+        if (this._mode == DialogMode.CONFIRM)
+            this._initiateSession();
+        else
+            this._onEntryActivate();
     },
 
     _onSessionCompleted: function(session, gainedAuthorization) {
@@ -329,6 +343,13 @@ var AuthenticationDialog = new Lang.Class({
             this._userAvatar.update();
             this._userAvatar.actor.show();
         }
+
+        if (this._user.get_password_mode() == AccountsService.UserPasswordMode.NONE) {
+            this._mode = DialogMode.CONFIRM;
+            this._passwordBox.hide();
+        } else {
+            this._mode = DialogMode.AUTH;
+        }
     },
 
     cancel: function() {


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