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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;
import android.net.LocalSocketAddress;
import android.net.LocalSocket;
import java.io.InputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.ArrayList;
/**
* {@hide}
*/
public class KeyStore {
public static int NO_ERROR = 1;
public static int LOCKED = 2;
public static int UNINITIALIZED = 3;
public static int SYSTEM_ERROR = 4;
public static int PROTOCOL_ERROR = 5;
public static int PERMISSION_DENIED = 6;
public static int KEY_NOT_FOUND = 7;
public static int VALUE_CORRUPTED = 8;
public static int UNDEFINED_ACTION = 9;
public static int WRONG_PASSWORD = 10;
private static final LocalSocketAddress sAddress = new LocalSocketAddress(
"keystore", LocalSocketAddress.Namespace.RESERVED);
private int mError = NO_ERROR;
private KeyStore() {}
public static KeyStore getInstance() {
return new KeyStore();
}
public int test() {
execute('t');
return mError;
}
public byte[] get(byte[] key) {
byte[][] values = execute('g', key);
return (values == null) ? null : values[0];
}
public String get(String key) {
byte[] value = get(key.getBytes());
return (value == null) ? null : new String(value);
}
public boolean put(byte[] key, byte[] value) {
execute('i', key, value);
return mError == NO_ERROR;
}
public boolean put(String key, String value) {
return put(key.getBytes(), value.getBytes());
}
public boolean delete(byte[] key) {
execute('d', key);
return mError == NO_ERROR;
}
public boolean delete(String key) {
return delete(key.getBytes());
}
public boolean contains(byte[] key) {
execute('e', key);
return mError == NO_ERROR;
}
public boolean contains(String key) {
return contains(key.getBytes());
}
public byte[][] scan(byte[] prefix) {
return execute('s', prefix);
}
public String[] scan(String prefix) {
byte[][] values = scan(prefix.getBytes());
if (values == null) {
return null;
}
String[] strings = new String[values.length];
for (int i = 0; i < values.length; ++i) {
strings[i] = new String(values[i]);
}
return strings;
}
public boolean reset() {
execute('r');
return mError == NO_ERROR;
}
public boolean password(byte[] oldPassword, byte[] newPassword) {
execute('p', oldPassword, newPassword);
return mError == NO_ERROR;
}
public boolean password(String oldPassword, String newPassword) {
return password(oldPassword.getBytes(), newPassword.getBytes());
}
public boolean password(byte[] password) {
return password(password, password);
}
public boolean password(String password) {
return password(password.getBytes());
}
public boolean lock() {
execute('l');
return mError == NO_ERROR;
}
public boolean unlock(byte[] password) {
execute('u', password);
return mError == NO_ERROR;
}
public boolean unlock(String password) {
return unlock(password.getBytes());
}
public int getLastError() {
return mError;
}
private byte[][] execute(int code, byte[]... parameters) {
mError = PROTOCOL_ERROR;
for (byte[] parameter : parameters) {
if (parameter == null || parameter.length > 65535) {
return null;
}
}
LocalSocket socket = new LocalSocket();
try {
socket.connect(sAddress);
OutputStream out = socket.getOutputStream();
out.write(code);
for (byte[] parameter : parameters) {
out.write(parameter.length >> 8);
out.write(parameter.length);
out.write(parameter);
}
out.flush();
socket.shutdownOutput();
InputStream in = socket.getInputStream();
code = in.read();
if (code == -1) {
return null;
}
ArrayList<byte[]> results = new ArrayList<byte[]>();
while (true) {
int i, j;
if ((i = in.read()) == -1) {
break;
}
if ((j = in.read()) == -1) {
return null;
}
byte[] result = new byte[i << 8 | j];
for (i = 0; i < result.length; i += j) {
if ((j = in.read(result, i, result.length - i)) == -1) {
return null;
}
}
results.add(result);
}
mError = code;
return results.toArray(new byte[results.size()][]);
} catch (IOException e) {
// ignore
} finally {
try {
socket.close();
} catch (IOException e) {}
}
return null;
}
}
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