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/*
* Copyright (C) 2008 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.internal.os;
import android.net.LocalSocket;
import android.net.LocalSocketAddress;
import android.os.SystemClock;
import android.util.Slog;
import libcore.io.IoUtils;
import libcore.io.Streams;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
/**
* Represents a connection to {@code installd}. Allows multiple connect and
* disconnect cycles.
*
* @hide for internal use only
*/
public class InstallerConnection {
private static final String TAG = "InstallerConnection";
private static final boolean LOCAL_DEBUG = false;
private InputStream mIn;
private OutputStream mOut;
private LocalSocket mSocket;
private final byte buf[] = new byte[1024];
public InstallerConnection() {
}
public synchronized String transact(String cmd) {
if (!connect()) {
Slog.e(TAG, "connection failed");
return "-1";
}
if (!writeCommand(cmd)) {
/*
* If installd died and restarted in the background (unlikely but
* possible) we'll fail on the next write (this one). Try to
* reconnect and write the command one more time before giving up.
*/
Slog.e(TAG, "write command failed? reconnect!");
if (!connect() || !writeCommand(cmd)) {
return "-1";
}
}
if (LOCAL_DEBUG) {
Slog.i(TAG, "send: '" + cmd + "'");
}
final int replyLength = readReply();
if (replyLength > 0) {
String s = new String(buf, 0, replyLength);
if (LOCAL_DEBUG) {
Slog.i(TAG, "recv: '" + s + "'");
}
return s;
} else {
if (LOCAL_DEBUG) {
Slog.i(TAG, "fail");
}
return "-1";
}
}
public int execute(String cmd) {
String res = transact(cmd);
try {
return Integer.parseInt(res);
} catch (NumberFormatException ex) {
return -1;
}
}
public int dexopt(String apkPath, int uid, boolean isPublic,
String instructionSet, int dexoptNeeded, boolean bootComplete) {
return dexopt(apkPath, uid, isPublic, "*", instructionSet, dexoptNeeded,
false, false, null, bootComplete);
}
public int dexopt(String apkPath, int uid, boolean isPublic, String pkgName,
String instructionSet, int dexoptNeeded, boolean vmSafeMode,
boolean debuggable, String outputPath, boolean bootComplete) {
StringBuilder builder = new StringBuilder("dexopt");
builder.append(' ');
builder.append(apkPath);
builder.append(' ');
builder.append(uid);
builder.append(isPublic ? " 1" : " 0");
builder.append(' ');
builder.append(pkgName);
builder.append(' ');
builder.append(instructionSet);
builder.append(' ');
builder.append(dexoptNeeded);
builder.append(vmSafeMode ? " 1" : " 0");
builder.append(debuggable ? " 1" : " 0");
builder.append(' ');
builder.append(outputPath != null ? outputPath : "!");
builder.append(bootComplete ? " 1" : " 0");
return execute(builder.toString());
}
private boolean connect() {
if (mSocket != null) {
return true;
}
Slog.i(TAG, "connecting...");
try {
mSocket = new LocalSocket();
LocalSocketAddress address = new LocalSocketAddress("installd",
LocalSocketAddress.Namespace.RESERVED);
mSocket.connect(address);
mIn = mSocket.getInputStream();
mOut = mSocket.getOutputStream();
} catch (IOException ex) {
disconnect();
return false;
}
return true;
}
public void disconnect() {
Slog.i(TAG, "disconnecting...");
IoUtils.closeQuietly(mSocket);
IoUtils.closeQuietly(mIn);
IoUtils.closeQuietly(mOut);
mSocket = null;
mIn = null;
mOut = null;
}
private boolean readFully(byte[] buffer, int len) {
try {
Streams.readFully(mIn, buffer, 0, len);
} catch (IOException ioe) {
Slog.e(TAG, "read exception");
disconnect();
return false;
}
if (LOCAL_DEBUG) {
Slog.i(TAG, "read " + len + " bytes");
}
return true;
}
private int readReply() {
if (!readFully(buf, 2)) {
return -1;
}
final int len = (((int) buf[0]) & 0xff) | ((((int) buf[1]) & 0xff) << 8);
if ((len < 1) || (len > buf.length)) {
Slog.e(TAG, "invalid reply length (" + len + ")");
disconnect();
return -1;
}
if (!readFully(buf, len)) {
return -1;
}
return len;
}
private boolean writeCommand(String cmdString) {
final byte[] cmd = cmdString.getBytes();
final int len = cmd.length;
if ((len < 1) || (len > buf.length)) {
return false;
}
buf[0] = (byte) (len & 0xff);
buf[1] = (byte) ((len >> 8) & 0xff);
try {
mOut.write(buf, 0, 2);
mOut.write(cmd, 0, len);
} catch (IOException ex) {
Slog.e(TAG, "write error");
disconnect();
return false;
}
return true;
}
public void waitForConnection() {
for (;;) {
if (execute("ping") >= 0) {
return;
}
Slog.w(TAG, "installd not ready");
SystemClock.sleep(1000);
}
}
}
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