├── CONTRIBUTING.md ├── LICENSE ├── README.md ├── app ├── .gitignore ├── build.gradle ├── proguard-rules.pro └── src │ └── main │ ├── AndroidManifest.xml │ ├── java │ └── com │ │ └── google │ │ └── appfliptesttool │ │ └── MainActivity.java │ └── res │ ├── drawable-v24 │ └── ic_launcher_foreground.xml │ ├── drawable │ └── ic_launcher_background.xml │ ├── layout │ └── activity_main.xml │ ├── mipmap-anydpi-v26 │ ├── ic_launcher.xml │ └── ic_launcher_round.xml │ ├── mipmap-hdpi │ ├── ic_launcher.png │ └── ic_launcher_round.png │ ├── mipmap-mdpi │ ├── ic_launcher.png │ └── ic_launcher_round.png │ ├── mipmap-xhdpi │ ├── ic_launcher.png │ └── ic_launcher_round.png │ ├── mipmap-xxhdpi │ ├── ic_launcher.png │ └── ic_launcher_round.png │ ├── mipmap-xxxhdpi │ ├── ic_launcher.png │ └── ic_launcher_round.png │ └── values │ ├── colors.xml │ ├── strings.xml │ └── styles.xml ├── build.gradle ├── gradle.properties ├── gradle └── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── gradlew ├── gradlew.bat ├── images └── screenshot.png └── settings.gradle /CONTRIBUTING.md: -------------------------------------------------------------------------------- 1 | # How to become a contributor and submit your own code 2 | 3 | ## Contributor License Agreements 4 | 5 | We'd love to accept your sample apps and patches! Before we can take them, we 6 | have to jump a couple of legal hurdles. 7 | 8 | Please fill out either the individual or corporate Contributor License Agreement 9 | (CLA). 10 | 11 | * If you are an individual writing original source code and you're sure you 12 | own the intellectual property, then you'll need to sign an [individual CLA](https://developers.google.com/open-source/cla/individual). 13 | * If you work for a company that wants to allow you to contribute your work, 14 | then you'll need to sign a [corporate CLA](https://developers.google.com/open-source/cla/corporate). 15 | 16 | Follow either of the two links above to access the appropriate CLA and 17 | instructions for how to sign and return it. Once we receive it, we'll be able to 18 | accept your pull requests. 19 | 20 | ## Contributing A Patch 21 | 22 | 1. Submit an issue describing your proposed change to the repo in question. 23 | 1. The repo owner will respond to your issue promptly. 24 | 1. If your proposed change is accepted, and you haven't already done so, sign a 25 | Contributor License Agreement (see details above). 26 | 1. Fork the desired repo, develop and test your code changes. 27 | 1. Ensure that your code adheres to the existing style in the sample to which 28 | you are contributing. Refer to the 29 | [Google Cloud Platform Samples Style Guide](https://github.com/GoogleCloudPlatform/Template/wiki/style.html) for the 30 | recommended coding standards for this organization. 31 | 1. Ensure that your code has an appropriate set of unit tests which all pass. 32 | 1. Submit a pull request. 33 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. 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We also recommend that a 185 | file or class name and description of purpose be included on the 186 | same "printed page" as the copyright notice for easier 187 | identification within third-party archives. 188 | 189 | Copyright {yyyy} {name of copyright owner} 190 | 191 | Licensed under the Apache License, Version 2.0 (the "License"); 192 | you may not use this file except in compliance with the License. 193 | You may obtain a copy of the License at 194 | 195 | http://www.apache.org/licenses/LICENSE-2.0 196 | 197 | Unless required by applicable law or agreed to in writing, software 198 | distributed under the License is distributed on an "AS IS" BASIS, 199 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 200 | See the License for the specific language governing permissions and 201 | limitations under the License. 202 | 203 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # App Flip Test Tool for Android 2 | 3 | The App Flip Test Tool is designed to verify your Android app's integration with 4 | App Flip for Google account linking. 5 | This app simulates the intent triggered by Google mobile apps when App Flip is enabled. 6 | Use this tool to debug issues you may be experiencing with App Flip and account linking 7 | in your Android app. 8 | 9 | The App Flip Test Tool can be used to test with the Google 10 | [App Flip Sample for Android](https://github.com/googlesamples/identity-appflip-android), 11 | or your own Android app with an App Flip account linking integration. 12 | 13 | Documentation links: 14 | 15 | - [App Flip Overview](https://developers.google.com/identity/account-linking/app-flip-overview) 16 | - [App Flip for Android](https://developers.google.com/identity/account-linking/app-flip-android) 17 | 18 | ## Prerequisites 19 | 20 | 1. Android Studio installed (version 3.0 or above) 21 | 1. Android device or emulator (API 26 or above) with your target app installed 22 | 23 | ## Getting started 24 | 25 | 1. Import the project into Android Studio 26 | 1. Open `res/values/strings.xml` and edit the following values: 27 | - `package_id`: Application id of your app 28 | - `intent_filter_name`: Intent action configured with App Flip for your app 29 | - `target_app_signature`: SHA256 fingerprint for your app's signature 30 | ([how do I find this?](https://developers.google.com/android/guides/client-auth)) 31 | - `client_id`: Client id configured with App Flip for your app 32 | - `scope`: Optional additional auth scopes array configured with App Flip for your app 33 | 1. Build and run the app on your target device 34 | 35 | ## Usage 36 | 37 | Launch the test tool application on your device, and tap **Try Flip**. 38 | The device should launch your Android app to complete the authorization flow. 39 | After completing user authorization, the test tool will display any `auth_code` 40 | or `error` messages in the log. 41 | 42 | ## Screenshots 43 | 44 | ![](images/screenshot.png) 45 | 46 | ## License 47 | 48 | Copyright 2019 Google LLC 49 | 50 | Licensed under the Apache License, Version 2.0 (the "License"); 51 | you may not use this file except in compliance with the License. 52 | You may obtain a copy of the License at 53 | 54 | http://www.apache.org/licenses/LICENSE-2.0 55 | 56 | Unless required by applicable law or agreed to in writing, software 57 | distributed under the License is distributed on an "AS IS" BASIS, 58 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 59 | See the License for the specific language governing permissions and 60 | limitations under the License. 61 | -------------------------------------------------------------------------------- /app/.gitignore: -------------------------------------------------------------------------------- 1 | *.iml 2 | .gradle 3 | local.properties 4 | .idea 5 | .DS_Store 6 | build 7 | -------------------------------------------------------------------------------- /app/build.gradle: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright 2019 Google LLC 3 | * 4 | * Licensed under the Apache License, Version 2.0 (the "License"); 5 | * you may not use this file except in compliance with the License. 6 | * You may obtain a copy of the License at 7 | * 8 | * http://www.apache.org/licenses/LICENSE-2.0 9 | * 10 | * Unless required by applicable law or agreed to in writing, software 11 | * distributed under the License is distributed on an "AS IS" BASIS, 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | * See the License for the specific language governing permissions and 14 | * limitations under the License. 15 | */ 16 | 17 | apply plugin: 'com.android.application' 18 | 19 | android { 20 | compileSdkVersion 28 21 | defaultConfig { 22 | applicationId "com.google.appfliptesttool" 23 | minSdkVersion 26 24 | targetSdkVersion 28 25 | versionCode 1 26 | versionName "1.0" 27 | testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner" 28 | } 29 | buildTypes { 30 | release { 31 | minifyEnabled false 32 | proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro' 33 | } 34 | } 35 | } 36 | 37 | dependencies { 38 | implementation fileTree(dir: 'libs', include: ['*.jar']) 39 | implementation 'com.android.support:appcompat-v7:28.0.0' 40 | implementation 'com.android.support.constraint:constraint-layout:1.1.3' 41 | testImplementation 'junit:junit:4.12' 42 | androidTestImplementation 'com.android.support.test:runner:1.0.2' 43 | androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2' 44 | } 45 | -------------------------------------------------------------------------------- /app/proguard-rules.pro: -------------------------------------------------------------------------------- 1 | # Add project specific ProGuard rules here. 2 | # You can control the set of applied configuration files using the 3 | # proguardFiles setting in build.gradle. 4 | # 5 | # For more details, see 6 | # http://developer.android.com/guide/developing/tools/proguard.html 7 | 8 | # If your project uses WebView with JS, uncomment the following 9 | # and specify the fully qualified class name to the JavaScript interface 10 | # class: 11 | #-keepclassmembers class fqcn.of.javascript.interface.for.webview { 12 | # public *; 13 | #} 14 | 15 | # Uncomment this to preserve the line number information for 16 | # debugging stack traces. 17 | #-keepattributes SourceFile,LineNumberTable 18 | 19 | # If you keep the line number information, uncomment this to 20 | # hide the original source file name. 21 | #-renamesourcefileattribute SourceFile 22 | -------------------------------------------------------------------------------- /app/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 2 | 17 | 19 | 20 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | -------------------------------------------------------------------------------- /app/src/main/java/com/google/appfliptesttool/MainActivity.java: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright 2019 Google LLC 3 | * 4 | * Licensed under the Apache License, Version 2.0 (the "License"); 5 | * you may not use this file except in compliance with the License. 6 | * You may obtain a copy of the License at 7 | * 8 | * http://www.apache.org/licenses/LICENSE-2.0 9 | * 10 | * Unless required by applicable law or agreed to in writing, software 11 | * distributed under the License is distributed on an "AS IS" BASIS, 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | * See the License for the specific language governing permissions and 14 | * limitations under the License. 15 | */ 16 | 17 | package com.google.appfliptesttool; 18 | 19 | import android.content.ActivityNotFoundException; 20 | import android.content.Context; 21 | import android.content.Intent; 22 | import android.content.pm.PackageInfo; 23 | import android.content.pm.PackageManager; 24 | import android.content.pm.Signature; 25 | import android.content.res.Resources; 26 | import android.support.v7.app.AppCompatActivity; 27 | import android.os.Bundle; 28 | import android.text.TextUtils; 29 | import android.util.Log; 30 | import android.view.View; 31 | import android.widget.Button; 32 | import android.widget.EditText; 33 | import android.widget.TextView; 34 | import android.widget.Toast; 35 | 36 | import java.io.ByteArrayInputStream; 37 | import java.io.InputStream; 38 | import java.security.MessageDigest; 39 | import java.security.NoSuchAlgorithmException; 40 | import java.security.cert.CertificateException; 41 | import java.security.cert.CertificateFactory; 42 | import java.security.cert.X509Certificate; 43 | import java.util.Formatter; 44 | 45 | public class MainActivity extends AppCompatActivity { 46 | private static final String TAG = "Main Activity"; 47 | private static final String EXTRA_APP_FLIP_CLIENT_ID = "CLIENT_ID"; 48 | private static final String EXTRA_APP_FLIP_SCOPES = "SCOPE"; 49 | private static final String EXTRA_APP_FLIP_REDIRECT_URI = "REDIRECT_URI"; 50 | private static final String EXTRA_APP_FLIP_AUTHORIZATION_CODE = "AUTHORIZATION_CODE"; 51 | private static final String EXTRA_APP_FLIP_ERROR_TYPE = "ERROR_TYPE"; 52 | private static final String EXTRA_APP_FLIP_ERROR_CODE = "ERROR_CODE"; 53 | private static final int APP_FLIP_UNKNOWN_ERROR_TYPE = -1; 54 | private static final int APP_FLIP_RESULT_ERROR = -2; 55 | private static final String EXTRA_APP_FLIP_ERROR_DESCRIPTION = "ERROR_DESCRIPTION"; 56 | private static final int APP_FLIP_RECOVERABLE_ERROR = 1; 57 | private static final int APP_FLIP_UNRECOVERABLE_ERROR = 2; 58 | private static final int APP_FLIP_INVALID_REQUEST_ERROR = 3; 59 | private static final int APP_FLIP_USER_DENIED_3P_CONSENT_ERROR_CODE = 13; 60 | private static final int RC_APP_FLIP = 100; 61 | private String[] scopes; 62 | private String redirectUri; 63 | private TextView logTextView; 64 | private EditText appNameToFlip, clientID, signatureEditText, intentFilterName; 65 | private Context context; 66 | private Intent intent; 67 | 68 | @Override 69 | protected void onCreate(Bundle savedInstanceState) { 70 | super.onCreate(savedInstanceState); 71 | setContentView(R.layout.activity_main); 72 | Resources res = getResources(); 73 | Button appFlipButton = findViewById(R.id.flipButton); 74 | logTextView = findViewById(R.id.resultText); 75 | appNameToFlip = findViewById(R.id.appIdEditText); 76 | intentFilterName = findViewById(R.id.intentFilterEditText); 77 | context = getApplicationContext(); 78 | signatureEditText = findViewById(R.id.signatureEditText); 79 | clientID = findViewById(R.id.clientIdEditText); 80 | scopes = res.getStringArray(R.array.scope); 81 | redirectUri = getString(R.string.redirect_uri); 82 | 83 | appFlipButton.setOnClickListener(new View.OnClickListener() { 84 | @Override 85 | public void onClick(View v){ 86 | logTextView.setText(""); 87 | // Check input intent filter name and client ID 88 | if(isEmpty(intentFilterName)){ 89 | Toast.makeText(context, "You did not enter app intent filter name", 90 | Toast.LENGTH_LONG).show(); 91 | Log.e(TAG, "Intent filter name is empty"); 92 | logTextView.setText("Intent filter name is empty\n"); 93 | return; 94 | } 95 | if(isEmpty(clientID)){ 96 | Toast.makeText(context, "You did not enter clientID", 97 | Toast.LENGTH_LONG).show(); 98 | Log.e(TAG, "Client ID name is empty"); 99 | logTextView.setText("Client ID name is empty\n"); 100 | return; 101 | } 102 | // check certificate 103 | String userInputSig = signatureEditText.getText().toString(); 104 | String packageName = appNameToFlip.getText().toString(); 105 | String certificate = getCertificateFingerprint(context.getPackageManager(), packageName); 106 | if(certificate == null){ 107 | Log.e(TAG,"Package name not found!"); 108 | logTextView.append("Package name invalid, can't flip!\n"); 109 | return; 110 | } 111 | Log.i(TAG, "App certificate: " + certificate); 112 | logTextView.append("Signature is " + certificate + "\n"); 113 | if(!userInputSig.equalsIgnoreCase(certificate)){ 114 | Toast.makeText(context, "Signature doesn't match\nPlease check", Toast.LENGTH_LONG).show(); 115 | Log.e(TAG, "Signature mismatch, can't flip!"); 116 | logTextView.append("Signature mismatch, can't flip!\n"); 117 | return; 118 | } 119 | Toast.makeText(context, "Signature match", Toast.LENGTH_SHORT).show(); 120 | // start appflip 121 | intent = new Intent(); 122 | intent.setAction(intentFilterName.getText().toString()); 123 | intent.setPackage(packageName); 124 | intent.putExtra(EXTRA_APP_FLIP_CLIENT_ID, clientID.getText().toString()); 125 | intent.putExtra(EXTRA_APP_FLIP_SCOPES, scopes); 126 | intent.putExtra(EXTRA_APP_FLIP_REDIRECT_URI, redirectUri); 127 | try { 128 | logTextView.append("Starting AppFlip...\n"); 129 | startActivityForResult(intent, RC_APP_FLIP); 130 | } catch (ActivityNotFoundException e) { 131 | Toast.makeText(context, "Could not open the app. Invalid intent filter action name!", 132 | Toast.LENGTH_LONG).show(); 133 | Log.e(TAG, e.getMessage()); 134 | logTextView.append("Could not open the app. Invalid intent filter action name!\n"); 135 | } 136 | } 137 | }); 138 | } 139 | 140 | @Override 141 | protected void onActivityResult(int requestCode, int resultCode, Intent data){ 142 | if (requestCode == RC_APP_FLIP) { 143 | switch (resultCode) { 144 | case RESULT_OK: 145 | String authCode = data.getStringExtra(EXTRA_APP_FLIP_AUTHORIZATION_CODE); 146 | if (!TextUtils.isEmpty(authCode)) { 147 | Log.i(TAG, "Auth Code was received successfully: " + authCode); 148 | logTextView.append("Auth Code received: " + authCode); 149 | } else { 150 | Log.i(TAG, "Fail: return auth code is empty"); 151 | logTextView.append("Fail: return auth code is empty"); 152 | } 153 | break; 154 | case RESULT_CANCELED: 155 | Log.i(TAG, "Flow was cancelled"); 156 | logTextView.append("Flow was cancelled"); 157 | break; 158 | case APP_FLIP_RESULT_ERROR: 159 | default: 160 | int errorType = data.getIntExtra(EXTRA_APP_FLIP_ERROR_TYPE, APP_FLIP_UNKNOWN_ERROR_TYPE); 161 | int errorCode = data.getIntExtra(EXTRA_APP_FLIP_ERROR_CODE, -1); 162 | String errorDescription = data.getStringExtra(EXTRA_APP_FLIP_ERROR_DESCRIPTION); 163 | String formattedErrorDescription = String.format("description: %s", 164 | TextUtils.isEmpty(errorDescription) ? "n/a" : errorDescription); 165 | if (errorType == APP_FLIP_RECOVERABLE_ERROR) { 166 | Log.e(TAG, String.format("App Flip Error: Recoverable, error code: %d, %s", 167 | errorCode, formattedErrorDescription)); 168 | logTextView.append("App Flip Error: Recoverable error. Error code: " + errorCode); 169 | } else if (errorType == APP_FLIP_INVALID_REQUEST_ERROR) { 170 | Log.e(TAG, String.format( 171 | "App Flip Error: Invalid request or parameters, error code: %d, %s", 172 | errorCode, formattedErrorDescription)); 173 | logTextView.append("App Flip Error: Invalid request or parameters. Error code: " + errorCode); 174 | } else if (errorType == APP_FLIP_UNRECOVERABLE_ERROR) { 175 | // User has rejected the consent explicitly in the 3P app. 176 | if (errorCode == APP_FLIP_USER_DENIED_3P_CONSENT_ERROR_CODE) { 177 | // User has denied the consent 178 | logTextView.append("App Flip Error: Consent was denied by user"); 179 | } else { 180 | // Unrecoverable error 181 | Log.e(TAG, String.format("App Flip Error: Unrecoverable, error code: %d, %s", 182 | errorCode, formattedErrorDescription)); 183 | logTextView.append("App Flip Error: Unrecoverable. Error code: " + errorCode); 184 | } 185 | } else { 186 | Log.e(TAG,String.format("App Flip Error: Unknown Error, Error type missing")); 187 | logTextView.append("App Flip Error: Unknown Error"); 188 | } 189 | } 190 | } 191 | } 192 | 193 | private boolean isEmpty(EditText editText) { 194 | return TextUtils.isEmpty(editText.getText().toString().trim()); 195 | } 196 | 197 | private String getCertificateFingerprint( 198 | PackageManager packageManager, String packageName) { 199 | try { 200 | PackageInfo packageInfo = 201 | packageManager.getPackageInfo(packageName, PackageManager.GET_SIGNATURES); 202 | Signature[] signatures = packageInfo.signatures; 203 | InputStream input = new ByteArrayInputStream(signatures[0].toByteArray()); 204 | CertificateFactory certificateFactory = CertificateFactory.getInstance("X509"); 205 | X509Certificate certificate = (X509Certificate) certificateFactory.generateCertificate(input); 206 | MessageDigest md = MessageDigest.getInstance("SHA-256"); 207 | byte[] publicKey = md.digest(certificate.getEncoded()); 208 | return byte2HexFormatted(publicKey); 209 | } catch (CertificateException | NoSuchAlgorithmException e) { 210 | Log.e(TAG, "Failed to process the certificate", e); 211 | Toast.makeText(context, "Failed to process the certificate", Toast.LENGTH_LONG).show(); 212 | logTextView.append("Failed to process the certificate\n"); 213 | } catch (PackageManager.NameNotFoundException e) { 214 | Log.e(TAG, "Failed to find an app with the given package name", e); 215 | Toast.makeText(context, "Failed to find an app with the given package name", 216 | Toast.LENGTH_LONG).show(); 217 | logTextView.append("Failed to find an app with the given package name\n"); 218 | } 219 | return null; 220 | } 221 | 222 | private static String byte2HexFormatted(byte[] byteArray) { 223 | Formatter formatter = new Formatter(); 224 | for (int i = 0; i < byteArray.length - 1; i++) { 225 | formatter.format("%02x:", byteArray[i]); 226 | } 227 | formatter.format("%02x", byteArray[byteArray.length - 1]); 228 | return formatter.toString(); 229 | } 230 | } 231 | -------------------------------------------------------------------------------- /app/src/main/res/drawable-v24/ic_launcher_foreground.xml: -------------------------------------------------------------------------------- 1 | 16 | 22 | 27 | 28 | 34 | 37 | 40 | 41 | 42 | 43 | 49 | 50 | -------------------------------------------------------------------------------- /app/src/main/res/drawable/ic_launcher_background.xml: -------------------------------------------------------------------------------- 1 | 2 | 17 | 22 | 25 | 30 | 35 | 40 | 45 | 50 | 55 | 60 | 65 | 70 | 75 | 80 | 85 | 90 | 95 | 100 | 105 | 110 | 115 | 120 | 125 | 130 | 135 | 140 | 145 | 150 | 155 | 160 | 165 | 170 | 175 | 180 | 185 | 186 | -------------------------------------------------------------------------------- /app/src/main/res/layout/activity_main.xml: -------------------------------------------------------------------------------- 1 | 2 | 17 | 24 | 25 | 37 | 38 | 50 | 51 | 65 | 66 | 75 | 88 | 100 | 114 | 123 | 137 | 138 |