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

2 files changed, 176 insertions, 0 deletions

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 0000000..25406d6
--- /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 0000000..0a6f675
--- /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);
+        }
+    }
+}