From a3dafcfb26117e3a2efa3983bd7ba79ae6831680 Mon Sep 17 00:00:00 2001
From: Adrian Roos <roosa@google.com>
Date: Thu, 27 Mar 2014 14:58:41 +0100
Subject: [PATCH] Add a SampleTrustAgent

Adds a simple app that shows how to build a trust agent. For
lack of a better place to put this, this stays in Keyguard's tests
for now.

Bug: 13723878
Change-Id: I9ebad253d3d89c846fe8afaad6babce9e7b80b5e
---
 .../Keyguard/test/SampleTrustAgent/Android.mk |  33 ++++++
 .../test/SampleTrustAgent/AndroidManifest.xml |  41 +++++++
 .../layout/sample_trust_agent_settings.xml    |  35 ++++++
 .../SampleTrustAgent/res/values/strings.xml   |  20 ++++
 .../res/xml/sample_trust_agent.xml            |  18 +++
 .../trustagent/test/SampleTrustAgent.java     | 107 ++++++++++++++++++
 .../test/SampleTrustAgentSettings.java        |  69 +++++++++++
 7 files changed, 323 insertions(+)
 create mode 100644 packages/Keyguard/test/SampleTrustAgent/Android.mk
 create mode 100644 packages/Keyguard/test/SampleTrustAgent/AndroidManifest.xml
 create mode 100644 packages/Keyguard/test/SampleTrustAgent/res/layout/sample_trust_agent_settings.xml
 create mode 100644 packages/Keyguard/test/SampleTrustAgent/res/values/strings.xml
 create mode 100644 packages/Keyguard/test/SampleTrustAgent/res/xml/sample_trust_agent.xml
 create mode 100644 packages/Keyguard/test/SampleTrustAgent/src/com/android/trustagent/test/SampleTrustAgent.java
 create mode 100644 packages/Keyguard/test/SampleTrustAgent/src/com/android/trustagent/test/SampleTrustAgentSettings.java

diff --git a/packages/Keyguard/test/SampleTrustAgent/Android.mk b/packages/Keyguard/test/SampleTrustAgent/Android.mk
new file mode 100644
index 0000000000000..7551fdf8a47fb
--- /dev/null
+++ b/packages/Keyguard/test/SampleTrustAgent/Android.mk
@@ -0,0 +1,33 @@
+# Copyright (C) 2014 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+LOCAL_PATH:= $(call my-dir)
+include $(CLEAR_VARS)
+
+LOCAL_SRC_FILES := $(call all-java-files-under, src)
+
+LOCAL_PACKAGE_NAME := SampleTrustAgent
+
+# Remove these to verify permission checks are working correctly
+#LOCAL_CERTIFICATE := platform
+#LOCAL_PRIVILEGED_MODULE := true
+
+LOCAL_MODULE_TAGS := tests
+
+# LOCAL_PROGUARD_FLAG_FILES := proguard.flags
+
+LOCAL_STATIC_JAVA_LIBRARIES := android-support-v4
+
+include $(BUILD_PACKAGE)
diff --git a/packages/Keyguard/test/SampleTrustAgent/AndroidManifest.xml b/packages/Keyguard/test/SampleTrustAgent/AndroidManifest.xml
new file mode 100644
index 0000000000000..15119110bb5d1
--- /dev/null
+++ b/packages/Keyguard/test/SampleTrustAgent/AndroidManifest.xml
@@ -0,0 +1,41 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (C) 2014 The Android Open Source Project
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~      http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License
+  -->
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.android.trustagent.test">
+    <uses-sdk android:minSdkVersion="10" android:targetSdkVersion="17"/>
+    <uses-permission android:name="android.permission.CONTROL_KEYGUARD" />
+    <application android:label="@string/app_name">
+      <service
+          android:name=".SampleTrustAgent"
+          android:label="@string/app_name"
+          android:exported="true">
+        <intent-filter>
+          <action android:name="android.service.trust.TrustAgentService" />
+          <category android:name="android.intent.category.DEFAULT" />
+        </intent-filter>
+        <meta-data android:name="android.service.trust.trustagent"
+                   android:resource="@xml/sample_trust_agent"/>
+      </service>
+
+      <activity
+          android:name=".SampleTrustAgentSettings"
+          android:label="@string/app_name"
+          android:exported="true"
+          android:launchMode="singleInstance" >
+      </activity>
+    </application>
+</manifest>
diff --git a/packages/Keyguard/test/SampleTrustAgent/res/layout/sample_trust_agent_settings.xml b/packages/Keyguard/test/SampleTrustAgent/res/layout/sample_trust_agent_settings.xml
new file mode 100644
index 0000000000000..01b107bb4172e
--- /dev/null
+++ b/packages/Keyguard/test/SampleTrustAgent/res/layout/sample_trust_agent_settings.xml
@@ -0,0 +1,35 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<!--
+  ~ Copyright (C) 2014 The Android Open Source Project
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~      http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License
+  -->
+
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+              android:orientation="vertical"
+              android:layout_width="match_parent"
+              android:layout_height="match_parent">
+    <Button android:id="@+id/enable_trust"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="Grant trust for 30 seconds" />
+    <Button android:id="@+id/revoke_trust"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="Revoke trust" />
+    <CheckBox android:id="@+id/report_unlock_attempts"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="Report unlock attempts" />
+</LinearLayout>
\ No newline at end of file
diff --git a/packages/Keyguard/test/SampleTrustAgent/res/values/strings.xml b/packages/Keyguard/test/SampleTrustAgent/res/values/strings.xml
new file mode 100644
index 0000000000000..0c6b502701ba7
--- /dev/null
+++ b/packages/Keyguard/test/SampleTrustAgent/res/values/strings.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (C) 2014 The Android Open Source Project
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~      http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License
+  -->
+
+<resources>
+    <string name="app_name">Sample Trust Agent</string>
+</resources>
\ No newline at end of file
diff --git a/packages/Keyguard/test/SampleTrustAgent/res/xml/sample_trust_agent.xml b/packages/Keyguard/test/SampleTrustAgent/res/xml/sample_trust_agent.xml
new file mode 100644
index 0000000000000..b48e01162c65d
--- /dev/null
+++ b/packages/Keyguard/test/SampleTrustAgent/res/xml/sample_trust_agent.xml
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (C) 2014 The Android Open Source Project
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~      http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License
+  -->
+<trust_agent xmlns:android="http://schemas.android.com/apk/res/android"
+        android:settingsActivity=".SampleTrustAgentSettings" />
diff --git a/packages/Keyguard/test/SampleTrustAgent/src/com/android/trustagent/test/SampleTrustAgent.java b/packages/Keyguard/test/SampleTrustAgent/src/com/android/trustagent/test/SampleTrustAgent.java
new file mode 100644
index 0000000000000..25406d64cd4e9
--- /dev/null
+++ b/packages/Keyguard/test/SampleTrustAgent/src/com/android/trustagent/test/SampleTrustAgent.java
@@ -0,0 +1,107 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License
+ */
+
+package com.android.trustagent.test;
+
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.content.SharedPreferences;
+import android.os.Bundle;
+import android.preference.PreferenceManager;
+import android.service.trust.TrustAgentService;
+import android.support.v4.content.LocalBroadcastManager;
+import android.widget.Toast;
+
+public class SampleTrustAgent extends TrustAgentService {
+
+    LocalBroadcastManager mLocalBroadcastManager;
+
+    private static final String ACTION_ENABLE_TRUST = "action.sample_trust_agent.enable_trust";
+    private static final String ACTION_REVOKE_TRUST = "action.sample_trust_agent.revoke_trust";
+
+    private static final String EXTRA_MESSAGE = "extra.message";
+    private static final String EXTRA_DURATION = "extra.duration";
+    private static final String EXTRA_EXTRA = "extra.extra";
+
+    private static final String PREFERENCE_REPORT_UNLOCK_ATTEMPTS
+            = "preference.report_unlock_attempts";
+
+    @Override
+    public void onCreate() {
+        super.onCreate();
+        IntentFilter filter = new IntentFilter();
+        filter.addAction(ACTION_ENABLE_TRUST);
+        filter.addAction(ACTION_REVOKE_TRUST);
+        mLocalBroadcastManager = LocalBroadcastManager.getInstance(this);
+        mLocalBroadcastManager.registerReceiver(mReceiver, filter);
+    }
+
+    @Override
+    protected void onUnlockAttempt(boolean successful) {
+        if (getReportUnlockAttempts(this)) {
+            Toast.makeText(this, "onUnlockAttempt(successful=" + successful + ")",
+                    Toast.LENGTH_SHORT).show();
+        }
+    }
+
+    @Override
+    public void onDestroy() {
+        super.onDestroy();
+        mLocalBroadcastManager.unregisterReceiver(mReceiver);
+    }
+
+    private BroadcastReceiver mReceiver = new BroadcastReceiver() {
+        @Override
+        public void onReceive(Context context, Intent intent) {
+            String action = intent.getAction();
+            if (ACTION_ENABLE_TRUST.equals(action)) {
+                enableTrust(intent.getStringExtra(EXTRA_MESSAGE),
+                        intent.getLongExtra(EXTRA_DURATION, 0),
+                        false /* initiatedByUser */);
+            } else if (ACTION_REVOKE_TRUST.equals(action)) {
+                revokeTrust();
+            }
+        }
+    };
+
+    public static void sendEnableTrust(Context context,
+            String message, long durationMs, Bundle extra) {
+        Intent intent = new Intent(ACTION_ENABLE_TRUST);
+        intent.putExtra(EXTRA_MESSAGE, message);
+        intent.putExtra(EXTRA_DURATION, durationMs);
+        intent.putExtra(EXTRA_EXTRA, extra);
+        LocalBroadcastManager.getInstance(context).sendBroadcast(intent);
+    }
+
+    public static void sendRevokeTrust(Context context) {
+        Intent intent = new Intent(ACTION_REVOKE_TRUST);
+        LocalBroadcastManager.getInstance(context).sendBroadcast(intent);
+    }
+
+    public static void setReportUnlockAttempts(Context context, boolean enabled) {
+        SharedPreferences sharedPreferences = PreferenceManager
+                .getDefaultSharedPreferences(context);
+        sharedPreferences.edit().putBoolean(PREFERENCE_REPORT_UNLOCK_ATTEMPTS, enabled).apply();
+    }
+
+    public static boolean getReportUnlockAttempts(Context context) {
+        SharedPreferences sharedPreferences = PreferenceManager
+                .getDefaultSharedPreferences(context);
+        return sharedPreferences.getBoolean(PREFERENCE_REPORT_UNLOCK_ATTEMPTS, false);
+    }
+}
diff --git a/packages/Keyguard/test/SampleTrustAgent/src/com/android/trustagent/test/SampleTrustAgentSettings.java b/packages/Keyguard/test/SampleTrustAgent/src/com/android/trustagent/test/SampleTrustAgentSettings.java
new file mode 100644
index 0000000000000..0a6f6753bdc5d
--- /dev/null
+++ b/packages/Keyguard/test/SampleTrustAgent/src/com/android/trustagent/test/SampleTrustAgentSettings.java
@@ -0,0 +1,69 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License
+ */
+
+package com.android.trustagent.test;
+
+import android.annotation.Nullable;
+import android.app.Activity;
+import android.os.Bundle;
+import android.preference.CheckBoxPreference;
+import android.view.View;
+import android.widget.CheckBox;
+import android.widget.CompoundButton;
+
+public class SampleTrustAgentSettings extends Activity implements View.OnClickListener,
+        CompoundButton.OnCheckedChangeListener {
+
+    private static final int TRUST_DURATION_MS = 30 * 1000;
+
+    private CheckBox mReportUnlockAttempts;
+
+    @Override
+    protected void onCreate(@Nullable Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.sample_trust_agent_settings);
+
+        findViewById(R.id.enable_trust).setOnClickListener(this);
+        findViewById(R.id.revoke_trust).setOnClickListener(this);
+
+        mReportUnlockAttempts = (CheckBox) findViewById(R.id.report_unlock_attempts);
+        mReportUnlockAttempts.setOnCheckedChangeListener(this);
+    }
+
+    @Override
+    protected void onResume() {
+        super.onResume();
+        mReportUnlockAttempts.setChecked(SampleTrustAgent.getReportUnlockAttempts(this));
+    }
+
+    @Override
+    public void onClick(View v) {
+        int id = v.getId();
+        if (id == R.id.enable_trust) {
+            SampleTrustAgent.sendEnableTrust(this, "SampleTrustAgent", TRUST_DURATION_MS,
+                    null /* extra */);
+        } else if (id == R.id.revoke_trust) {
+            SampleTrustAgent.sendRevokeTrust(this);
+        }
+    }
+
+    @Override
+    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
+        if (buttonView.getId() == R.id.report_unlock_attempts) {
+            SampleTrustAgent.setReportUnlockAttempts(this, isChecked);
+        }
+    }
+}