add autofill service support for web browsers

src/Android/Autofill/Field.cs

@@ -5,6 +5,7 @@ using Android.Views;
 using Android.Views.Autofill;
 using static Android.App.Assist.AssistStructure;
 using Android.Text;
+using static Android.Views.ViewStructure;
 
 namespace Bit.Android.Autofill
 {
@@ -24,7 +25,9 @@ namespace Bit.Android.Autofill
             Clickable = node.IsClickable;
             Visible = node.Visibility == ViewStates.Visible;
             Hints = FilterForSupportedHints(node.GetAutofillHints());
+            Hint = node.Hint;
             AutofillOptions = node.GetAutofillOptions()?.ToList();
+            HtmlInfo = node.HtmlInfo;
             Node = node;
 
             if(node.AutofillValue != null)
@@ -63,6 +66,7 @@ namespace Bit.Android.Autofill
                 UpdateSaveTypeFromHints();
             }
         }
+        public string Hint { get; set; }
         public int Id { get; private set; }
         public string IdEntry { get; set; }
         public AutofillId AutofillId { get; private set; }
@@ -77,6 +81,7 @@ namespace Bit.Android.Autofill
         public long? DateValue { get; set; }
         public int? ListValue { get; set; }
         public bool? ToggleValue { get; set; }
+        public HtmlInfo HtmlInfo { get; private set; }
         public ViewNode Node { get; private set; }
 
         private void UpdateSaveTypeFromHints()

src/Android/Autofill/FieldCollection.cs

@@ -61,7 +61,7 @@ namespace Bit.Android.Autofill
                     _passwordFields = Fields
                         .Where(f =>
                             (!f.IdEntry?.ToLowerInvariant().Contains("search") ?? true) &&
-                            (!f.Node?.Hint?.ToLowerInvariant().Contains("search") ?? true) &&
+                            (!f.Hint?.ToLowerInvariant().Contains("search") ?? true) &&
                             (
                                 f.InputType.HasFlag(InputTypes.TextVariationPassword) ||
                                 f.InputType.HasFlag(InputTypes.TextVariationVisiblePassword) ||
@@ -71,7 +71,8 @@ namespace Bit.Android.Autofill
                     if(!_passwordFields.Any())
                     {
                         _passwordFields = Fields.Where(f =>
-                            f.IdEntry?.ToLowerInvariant().Contains("password") ?? false).ToList();
+                            (f.IdEntry?.ToLowerInvariant().Contains("password") ?? false)
+                            || (f.Hint?.ToLowerInvariant().Contains("password") ?? false)).ToList();
                     }
                 }
 
@@ -104,7 +105,7 @@ namespace Bit.Android.Autofill
                 {
                     foreach(var passwordField in PasswordFields)
                     {
-                        var usernameField = Fields.TakeWhile(f => f.Id != passwordField.Id).LastOrDefault();
+                        var usernameField = Fields.TakeWhile(f => f.AutofillId != passwordField.AutofillId).LastOrDefault();
                         if(usernameField != null)
                         {
                             _usernameFields.Add(usernameField);
@@ -137,10 +138,14 @@ namespace Bit.Android.Autofill
 
             _passwordFields = _usernameFields = null;
 
+            if(field.Id > -1)
+            {
                 Ids.Add(field.Id);
+                IdToFieldMap.Add(field.Id, field);
+            }
+
             Fields.Add(field);
             AutofillIds.Add(field.AutofillId);
-            IdToFieldMap.Add(field.Id, field);
 
             if(field.Hints != null)
             {
@@ -181,7 +186,7 @@ namespace Bit.Android.Autofill
                     }
                 };
 
-                var usernameField = Fields.TakeWhile(f => f.Id != passwordField.Id).LastOrDefault();
+                var usernameField = Fields.TakeWhile(f => f.AutofillId != passwordField.AutofillId).LastOrDefault();
                 savedItem.Login.Username = GetFieldValue(usernameField);
 
                 return savedItem;

src/Android/Autofill/Parser.cs

@@ -1,14 +1,26 @@
 using static Android.App.Assist.AssistStructure;
 using Android.App.Assist;
 using Bit.App;
+using System.Collections.Generic;
 
 namespace Bit.Android.Autofill
 {
     public class Parser
     {
+        public static HashSet<string> TrustedBrowsers = new HashSet<string>
+        {
+            "org.mozilla.focus","org.mozilla.firefox","org.mozilla.firefox_beta","com.microsoft.emmx",
+            "com.android.chrome","com.chrome.beta","com.android.browser","com.brave.browser","com.opera.browser",
+            "com.opera.browser.beta","com.opera.mini.native","com.chrome.dev","com.chrome.canary",
+            "com.google.android.apps.chrome","com.google.android.apps.chrome_dev","com.yandex.browser",
+            "com.sec.android.app.sbrowser","com.sec.android.app.sbrowser.beta","org.codeaurora.swe.browser",
+            "com.amazon.cloud9"
+        };
+
         private readonly AssistStructure _structure;
         private string _uri;
         private string _packageName;
+        private string _webDomain;
 
         public Parser(AssistStructure structure)
         {
@@ -25,10 +37,14 @@ namespace Bit.Android.Autofill
                     return _uri;
                 }
 
-                if(string.IsNullOrWhiteSpace(PackageName))
+                if(string.IsNullOrWhiteSpace(WebDomain) && string.IsNullOrWhiteSpace(PackageName))
                 {
                     _uri = null;
                 }
+                else if(!string.IsNullOrWhiteSpace(WebDomain))
+                {
+                    _uri = string.Concat("http://", WebDomain);
+                }
                 else
                 {
                     _uri = string.Concat(Constants.AndroidAppProtocol, PackageName);
@@ -50,6 +66,19 @@ namespace Bit.Android.Autofill
                 _packageName = value;
             }
         }
+        public string WebDomain
+        {
+            get => _webDomain;
+            set
+            {
+                if(string.IsNullOrWhiteSpace(value))
+                {
+                    _webDomain = _uri = null;
+                }
+
+                _webDomain = value;
+            }
+        }
 
         public void Parse()
         {
@@ -63,17 +92,27 @@ namespace Bit.Android.Autofill
         private void ParseNode(ViewNode node)
         {
             var hints = node.GetAutofillHints();
-            var isEditText = node.ClassName == "android.widget.EditText";
+            var isEditText = node.ClassName == "android.widget.EditText" || node?.HtmlInfo?.Tag == "input";
             if(isEditText || (hints?.Length ?? 0) > 0)
             {
                 if(PackageName == null)
                 {
                     PackageName = node.IdPackage;
                 }
+                if(WebDomain == null && TrustedBrowsers.Contains(node.IdPackage))
+                {
+                    WebDomain = node.WebDomain;
+                }
+
                 FieldCollection.Add(new Field(node));
             }
             else
             {
+                if(WebDomain == null && TrustedBrowsers.Contains(node.IdPackage))
+                {
+                    WebDomain = node.WebDomain;
+                }
+
                 FieldCollection.IgnoreAutofillIds.Add(node.AutofillId);
             }