Examples with SaslOutputStream org.apache.hadoop.security.SaslOutputStream used on opensource projects

Example 1 with SaslOutputStream

use of org.apache.hadoop.security.SaslOutputStream in project hbase by apache.

the class HBaseSaslRpcClient method saslConnect.

/**
   * Do client side SASL authentication with server via the given InputStream and OutputStream
   * @param inS InputStream to use
   * @param outS OutputStream to use
   * @return true if connection is set up, or false if needs to switch to simple Auth.
   * @throws IOException
   */
public boolean saslConnect(InputStream inS, OutputStream outS) throws IOException {
    DataInputStream inStream = new DataInputStream(new BufferedInputStream(inS));
    DataOutputStream outStream = new DataOutputStream(new BufferedOutputStream(outS));
    try {
        byte[] saslToken = getInitialResponse();
        if (saslToken != null) {
            outStream.writeInt(saslToken.length);
            outStream.write(saslToken, 0, saslToken.length);
            outStream.flush();
            if (LOG.isDebugEnabled()) {
                LOG.debug("Have sent token of size " + saslToken.length + " from initSASLContext.");
            }
        }
        if (!isComplete()) {
            readStatus(inStream);
            int len = inStream.readInt();
            if (len == SaslUtil.SWITCH_TO_SIMPLE_AUTH) {
                if (!fallbackAllowed) {
                    throw new IOException("Server asks us to fall back to SIMPLE auth, " + "but this client is configured to only allow secure connections.");
                }
                if (LOG.isDebugEnabled()) {
                    LOG.debug("Server asks us to fall back to simple auth.");
                }
                dispose();
                return false;
            }
            saslToken = new byte[len];
            if (LOG.isDebugEnabled()) {
                LOG.debug("Will read input token of size " + saslToken.length + " for processing by initSASLContext");
            }
            inStream.readFully(saslToken);
        }
        while (!isComplete()) {
            saslToken = evaluateChallenge(saslToken);
            if (saslToken != null) {
                if (LOG.isDebugEnabled()) {
                    LOG.debug("Will send token of size " + saslToken.length + " from initSASLContext.");
                }
                outStream.writeInt(saslToken.length);
                outStream.write(saslToken, 0, saslToken.length);
                outStream.flush();
            }
            if (!isComplete()) {
                readStatus(inStream);
                saslToken = new byte[inStream.readInt()];
                if (LOG.isDebugEnabled()) {
                    LOG.debug("Will read input token of size " + saslToken.length + " for processing by initSASLContext");
                }
                inStream.readFully(saslToken);
            }
        }
        if (LOG.isDebugEnabled()) {
            LOG.debug("SASL client context established. Negotiated QoP: " + saslClient.getNegotiatedProperty(Sasl.QOP));
        }
        // initial the inputStream, outputStream for both Sasl encryption
        // and Crypto AES encryption if necessary
        // if Crypto AES encryption enabled, the saslInputStream/saslOutputStream is
        // only responsible for connection header negotiation,
        // cryptoInputStream/cryptoOutputStream is responsible for rpc encryption with Crypto AES
        saslInputStream = new SaslInputStream(inS, saslClient);
        saslOutputStream = new SaslOutputStream(outS, saslClient);
        if (initStreamForCrypto) {
            cryptoInputStream = new WrappedInputStream(inS);
            cryptoOutputStream = new WrappedOutputStream(outS);
        }
        return true;
    } catch (IOException e) {
        try {
            saslClient.dispose();
        } catch (SaslException ignored) {
        // ignore further exceptions during cleanup
        }
        throw e;
    }
}