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/*
* Copyright (C) 2009 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.settings;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.security.Credentials;
import android.security.KeyStore;
import android.util.Log;
/**
* Installs credentials to the system keystore. It reacts to the
* {@link Credentials#SYSTEM_INSTALL_ACTION} intent. All the key-value pairs in
* the intent are installed to the system keystore. For security reason, the
* current implementation limits that only com.android.certinstaller can use
* this service.
*/
public class CredentialInstaller extends Activity {
private static final String TAG = "CredentialInstaller";
private static final String UNLOCKING = "ulck";
private KeyStore mKeyStore = KeyStore.getInstance();
private boolean mUnlocking = false;
@Override
protected void onResume() {
super.onResume();
if (!"com.android.certinstaller".equals(getCallingPackage())) finish();
if (isKeyStoreUnlocked()) {
install();
} else if (!mUnlocking) {
mUnlocking = true;
Credentials.getInstance().unlock(this);
return;
}
finish();
}
@Override
protected void onSaveInstanceState(Bundle outStates) {
super.onSaveInstanceState(outStates);
outStates.putBoolean(UNLOCKING, mUnlocking);
}
@Override
protected void onRestoreInstanceState(Bundle savedStates) {
super.onRestoreInstanceState(savedStates);
mUnlocking = savedStates.getBoolean(UNLOCKING);
}
private void install() {
Intent intent = getIntent();
Bundle bundle = (intent == null) ? null : intent.getExtras();
if (bundle == null) return;
for (String key : bundle.keySet()) {
byte[] data = bundle.getByteArray(key);
if (data == null) continue;
boolean success = mKeyStore.put(key.getBytes(), data);
Log.d(TAG, "install " + key + ": " + data.length + " success? " + success);
if (!success) return;
}
setResult(RESULT_OK);
}
private boolean isKeyStoreUnlocked() {
return (mKeyStore.test() == KeyStore.NO_ERROR);
}
}
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