| /* |
| * 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.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) { |
| return dexopt(apkPath, uid, isPublic, "*", instructionSet, false); |
| } |
| |
| public int dexopt(String apkPath, int uid, boolean isPublic, String pkgName, |
| String instructionSet, boolean vmSafeMode) { |
| 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(vmSafeMode ? " 1" : " 0"); |
| return execute(builder.toString()); |
| } |
| |
| public int patchoat(String apkPath, int uid, boolean isPublic, String instructionSet) { |
| return patchoat(apkPath, uid, isPublic, "*", instructionSet); |
| } |
| |
| public int patchoat(String apkPath, int uid, boolean isPublic, String pkgName, |
| String instructionSet) { |
| StringBuilder builder = new StringBuilder("patchoat"); |
| 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); |
| 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; |
| } |
| } |