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InstallerConnection.javaAPI DocAndroid 5.1 API6406Thu Mar 12 22:22:10 GMT 2015com.android.internal.os

InstallerConnection

public class InstallerConnection extends Object
Represents a connection to {@code installd}. Allows multiple connect and disconnect cycles.
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for internal use only

Fields Summary
private static final String
TAG
private static final boolean
LOCAL_DEBUG
private InputStream
mIn
private OutputStream
mOut
private android.net.LocalSocket
mSocket
private final byte[]
buf
Constructors Summary
public InstallerConnection()


      
    
Methods Summary
private booleanconnect()

        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 intdexopt(java.lang.String apkPath, int uid, boolean isPublic, java.lang.String instructionSet)

        return dexopt(apkPath, uid, isPublic, "*", instructionSet, false);
    
public intdexopt(java.lang.String apkPath, int uid, boolean isPublic, java.lang.String pkgName, java.lang.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 voiddisconnect()

        Slog.i(TAG, "disconnecting...");
        IoUtils.closeQuietly(mSocket);
        IoUtils.closeQuietly(mIn);
        IoUtils.closeQuietly(mOut);

        mSocket = null;
        mIn = null;
        mOut = null;
    
public intexecute(java.lang.String cmd)

        String res = transact(cmd);
        try {
            return Integer.parseInt(res);
        } catch (NumberFormatException ex) {
            return -1;
        }
    
public intpatchoat(java.lang.String apkPath, int uid, boolean isPublic, java.lang.String instructionSet)

        return patchoat(apkPath, uid, isPublic, "*", instructionSet);
    
public intpatchoat(java.lang.String apkPath, int uid, boolean isPublic, java.lang.String pkgName, java.lang.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 booleanreadFully(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 intreadReply()

        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;
    
public synchronized java.lang.Stringtransact(java.lang.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";
        }
    
private booleanwriteCommand(java.lang.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;