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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 android.security;
/**
* The Keystore class provides the functions to list the certs/keys in keystore.
* {@hide}
*/
public abstract class Keystore {
private static final String TAG = "Keystore";
private static final String[] NOTFOUND = new String[0];
// Keystore States
public static final int BOOTUP = 0;
public static final int UNINITIALIZED = 1;
public static final int LOCKED = 2;
public static final int UNLOCKED = 3;
/**
*/
public static Keystore getInstance() {
return new FileKeystore();
}
public abstract int lock();
public abstract int unlock(String password);
public abstract int getState();
public abstract int changePassword(String oldPassword, String newPassword);
public abstract int setPassword(String firstPassword);
public abstract String[] listKeys(String namespace);
public abstract int put(String namespace, String keyname, String value);
public abstract String get(String namespace, String keyname);
public abstract int remove(String namespace, String keyname);
public abstract int reset();
private static class FileKeystore extends Keystore {
private static final String SERVICE_NAME = "keystore";
private static final String CA_CERTIFICATE = "CaCertificate";
private static final String USER_CERTIFICATE = "UserCertificate";
private static final String USER_KEY = "UserPrivateKey";
private static final String COMMAND_DELIMITER = " ";
private static final ServiceCommand mServiceCommand =
new ServiceCommand(SERVICE_NAME);
@Override
public int lock() {
Reply result = mServiceCommand.execute(ServiceCommand.LOCK, null);
return (result != null) ? result.returnCode : -1;
}
@Override
public int unlock(String password) {
Reply result = mServiceCommand.execute(ServiceCommand.UNLOCK,
password);
return (result != null) ? result.returnCode : -1;
}
@Override
public int getState() {
Reply result = mServiceCommand.execute(ServiceCommand.GET_STATE,
null);
return (result != null) ? result.returnCode : -1;
}
@Override
public int changePassword(String oldPassword, String newPassword) {
Reply result = mServiceCommand.execute(ServiceCommand.PASSWD,
oldPassword + " " + newPassword);
return (result != null) ? result.returnCode : -1;
}
@Override
public int setPassword(String firstPassword) {
Reply result = mServiceCommand.execute(ServiceCommand.PASSWD,
firstPassword);
return (result != null) ? result.returnCode : -1;
}
@Override
public String[] listKeys(String namespace) {
Reply result = mServiceCommand.execute(ServiceCommand.LIST_KEYS,
namespace);
if ((result == null) || (result.returnCode != 0) ||
(result.len == 0)) {
return NOTFOUND;
}
return new String(result.data, 0, result.len).split("\\s+");
}
@Override
public int put(String namespace, String keyname, String value) {
Reply result = mServiceCommand.execute(ServiceCommand.PUT_KEY,
namespace + " " + keyname + " " + value);
return (result != null) ? result.returnCode : -1;
}
@Override
public String get(String namespace, String keyname) {
Reply result = mServiceCommand.execute(ServiceCommand.GET_KEY,
namespace + " " + keyname);
return (result != null) ? ((result.returnCode != 0) ? null :
new String(result.data, 0, result.len)) : null;
}
@Override
public int remove(String namespace, String keyname) {
Reply result = mServiceCommand.execute(ServiceCommand.REMOVE_KEY,
namespace + " " + keyname);
return (result != null) ? result.returnCode : -1;
}
@Override
public int reset() {
Reply result = mServiceCommand.execute(ServiceCommand.RESET, null);
return (result != null) ? result.returnCode : -1;
}
}
}
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