From e86fa6f9fabb0bc9b0e06e9d0d4d9eca95394bed Mon Sep 17 00:00:00 2001
From: Philipp Crocoll <crocoapps@gmail.com>
Date: Tue, 25 Mar 2025 10:56:24 +0100
Subject: [PATCH] add support for otpauth:// URIs

---
 .../Manifests/AndroidManifest_debug.xml       |  9 ++++++++
 .../Manifests/AndroidManifest_net.xml         |  9 +++++++-
 .../Manifests/AndroidManifest_nonet.xml       |  8 +++++++
 .../SelectCurrentDbActivity.cs                | 22 ++++++++++++++++++-
 4 files changed, 46 insertions(+), 2 deletions(-)

diff --git a/src/keepass2android-app/Manifests/AndroidManifest_debug.xml b/src/keepass2android-app/Manifests/AndroidManifest_debug.xml
index 45df9101..e9b17aaa 100644
--- a/src/keepass2android-app/Manifests/AndroidManifest_debug.xml
+++ b/src/keepass2android-app/Manifests/AndroidManifest_debug.xml
@@ -243,6 +243,15 @@ The scheme=file is still there for old OS devices. It's also queried by apps lik
         <action android:name="keepass2android.ACTION_START_WITH_TASK" />
         <category android:name="android.intent.category.DEFAULT" />
       </intent-filter>
+
+      <intent-filter>
+        <action android:name="android.intent.action.VIEW" />
+        <category android:name="android.intent.category.DEFAULT" />
+        <category android:name="android.intent.category.BROWSABLE" />
+        <data android:scheme="otpauth"/>
+        <data android:host="totp"/>
+        <data android:host="hotp"/>
+      </intent-filter>
     </activity>
     <uses-library android:required="false" android:name="com.sec.android.app.multiwindow" />
     <meta-data android:name="com.sec.android.support.multiwindow" android:value="true" />
diff --git a/src/keepass2android-app/Manifests/AndroidManifest_net.xml b/src/keepass2android-app/Manifests/AndroidManifest_net.xml
index 4c66a71b..a760e2a3 100644
--- a/src/keepass2android-app/Manifests/AndroidManifest_net.xml
+++ b/src/keepass2android-app/Manifests/AndroidManifest_net.xml
@@ -255,7 +255,14 @@ The scheme=file is still there for old OS devices. It's also queried by apps lik
         <action android:name="keepass2android.ACTION_START_WITH_TASK" />
         <category android:name="android.intent.category.DEFAULT" />
       </intent-filter>
-      x
+      <intent-filter>
+        <action android:name="android.intent.action.VIEW" />
+        <category android:name="android.intent.category.DEFAULT" />
+        <category android:name="android.intent.category.BROWSABLE" />
+        <data android:scheme="otpauth"/>
+        <data android:host="totp"/>
+        <data android:host="hotp"/>
+      </intent-filter>
     </activity>
     <uses-library android:required="false" android:name="com.sec.android.app.multiwindow" />
     <meta-data android:name="com.sec.android.support.multiwindow" android:value="true" />
diff --git a/src/keepass2android-app/Manifests/AndroidManifest_nonet.xml b/src/keepass2android-app/Manifests/AndroidManifest_nonet.xml
index f924a72a..cf2d83cc 100644
--- a/src/keepass2android-app/Manifests/AndroidManifest_nonet.xml
+++ b/src/keepass2android-app/Manifests/AndroidManifest_nonet.xml
@@ -236,6 +236,14 @@ The scheme=file is still there for old OS devices. It's also queried by apps lik
 				<action android:name="keepass2android.ACTION_START_WITH_TASK" />
 				<category android:name="android.intent.category.DEFAULT" />
 			</intent-filter>
+      <intent-filter>
+        <action android:name="android.intent.action.VIEW" />
+        <category android:name="android.intent.category.DEFAULT" />
+        <category android:name="android.intent.category.BROWSABLE" />
+        <data android:scheme="otpauth"/>
+        <data android:host="totp"/>
+        <data android:host="hotp"/>
+      </intent-filter>
 		</activity>
 		<uses-library android:required="false" android:name="com.sec.android.app.multiwindow" />
 		<meta-data android:name="com.sec.android.support.multiwindow" android:value="true" />
diff --git a/src/keepass2android-app/SelectCurrentDbActivity.cs b/src/keepass2android-app/SelectCurrentDbActivity.cs
index f3119577..0430dc8b 100644
--- a/src/keepass2android-app/SelectCurrentDbActivity.cs
+++ b/src/keepass2android-app/SelectCurrentDbActivity.cs
@@ -27,6 +27,7 @@ using KeePassLib.Serialization;
 using Console = System.Console;
 using Object = Java.Lang.Object;
 using AndroidX.Core.Content;
+using Uri = Android.Net.Uri;
 
 namespace keepass2android
 {
@@ -302,9 +303,23 @@ namespace keepass2android
             }
             else
             {
+
                 if (Intent.Action == Intent.ActionView)
                 {
-                    GetIocFromViewIntent(Intent);
+                    if (IsOtpUri(Intent.Data))
+                    {
+                        AppTask = new CreateEntryThenCloseTask()
+                        {
+                            AllFields = Newtonsoft.Json.JsonConvert.SerializeObject(new Dictionary<string, string>()
+                            {
+                                { "otp", Intent.DataString }
+                            })
+                        };
+                    }
+                    else
+                    {
+                        GetIocFromViewIntent(Intent);
+                    }
                 }
                 else if (Intent.Action == Intent.ActionSend)
                 {
@@ -334,6 +349,11 @@ namespace keepass2android
 
         }
 
+        private bool IsOtpUri(Uri? uri)
+        {
+            return uri?.Scheme == "otpauth";
+        }
+
         protected override void OnStart()
         {
             base.OnStart();