Examples with DataFormatException net.i2p.data.DataFormatException used on opensource projects

Example 31 with DataFormatException

use of net.i2p.data.DataFormatException in project i2p.i2p by i2p.

the class SOCKS4aServer method getDestinationI2PSocket.

/**
 * Get an I2PSocket that can be used to send/receive 8-bit clean data
 * to/from the destination of the SOCKS connection.
 *
 * @return an I2PSocket connected with the destination
 */
public I2PSocket getDestinationI2PSocket(I2PSOCKSTunnel t) throws SOCKSException {
    setupServer();
    if (connHostName == null) {
        _log.error("BUG: destination host name has not been initialized!");
        throw new SOCKSException("BUG! See the logs!");
    }
    if (connPort == 0) {
        _log.error("BUG: destination port has not been initialized!");
        throw new SOCKSException("BUG! See the logs!");
    }
    // for errors
    DataOutputStream out;
    try {
        out = new DataOutputStream(clientSock.getOutputStream());
    } catch (IOException e) {
        throw new SOCKSException("Connection error", e);
    }
    // FIXME: here we should read our config file, select an
    // outproxy, and instantiate the proper socket class that
    // handles the outproxy itself (SOCKS4a, SOCKS4a, HTTP CONNECT...).
    I2PSocket destSock;
    try {
        if (connHostName.toLowerCase(Locale.US).endsWith(".i2p")) {
            Destination dest = _context.namingService().lookup(connHostName);
            if (dest == null) {
                try {
                    sendRequestReply(Reply.CONNECTION_REFUSED, InetAddress.getByName("127.0.0.1"), 0, out);
                } catch (IOException ioe) {
                }
                throw new SOCKSException("Host not found");
            }
            if (_log.shouldDebug())
                _log.debug("connecting to " + connHostName + "...");
            Properties overrides = new Properties();
            I2PSocketOptions sktOpts = t.buildOptions(overrides);
            sktOpts.setPort(connPort);
            destSock = t.createI2PSocket(dest, sktOpts);
        } else if ("localhost".equals(connHostName) || "127.0.0.1".equals(connHostName)) {
            String err = "No localhost accesses allowed through the Socks Proxy";
            _log.error(err);
            try {
                sendRequestReply(Reply.CONNECTION_REFUSED, InetAddress.getByName("127.0.0.1"), 0, out);
            } catch (IOException ioe) {
            }
            throw new SOCKSException(err);
        /**
         **
         *            } else if (connPort == 80) {
         *                // rewrite GET line to include hostname??? or add Host: line???
         *                // or forward to local eepProxy (but that's a Socket not an I2PSocket)
         *                // use eepProxy configured outproxies?
         *                String err = "No handler for HTTP outproxy implemented - to: " + connHostName;
         *                _log.error(err);
         *                try {
         *                    sendRequestReply(Reply.CONNECTION_REFUSED, InetAddress.getByName("127.0.0.1"), 0, out);
         *                } catch (IOException ioe) {}
         *                throw new SOCKSException(err);
         ***
         */
        } else {
            Outproxy outproxy = getOutproxyPlugin();
            if (outproxy != null) {
                try {
                    destSock = new SocketWrapper(outproxy.connect(connHostName, connPort));
                } catch (IOException ioe) {
                    try {
                        sendRequestReply(Reply.CONNECTION_REFUSED, InetAddress.getByName("127.0.0.1"), 0, out);
                    } catch (IOException ioe2) {
                    }
                    throw new SOCKSException("connect failed via outproxy plugin", ioe);
                }
            } else {
                List<String> proxies = t.getProxies(connPort);
                if (proxies == null || proxies.isEmpty()) {
                    String err = "No outproxy configured for port " + connPort + " and no default configured either - host: " + connHostName;
                    _log.error(err);
                    try {
                        sendRequestReply(Reply.CONNECTION_REFUSED, InetAddress.getByName("127.0.0.1"), 0, out);
                    } catch (IOException ioe) {
                    }
                    throw new SOCKSException(err);
                }
                int p = _context.random().nextInt(proxies.size());
                String proxy = proxies.get(p);
                Destination dest = _context.namingService().lookup(proxy);
                if (dest == null) {
                    try {
                        sendRequestReply(Reply.CONNECTION_REFUSED, InetAddress.getByName("127.0.0.1"), 0, out);
                    } catch (IOException ioe) {
                    }
                    throw new SOCKSException("Outproxy not found");
                }
                if (_log.shouldDebug())
                    _log.debug("connecting to port " + connPort + " proxy " + proxy + " for " + connHostName + "...");
                // this isn't going to work, these need to be socks outproxies so we need
                // to do a socks session to them?
                destSock = t.createI2PSocket(dest);
            }
        }
        confirmConnection();
        _log.debug("connection confirmed - exchanging data...");
    } catch (DataFormatException e) {
        try {
            sendRequestReply(Reply.CONNECTION_REFUSED, InetAddress.getByName("127.0.0.1"), 0, out);
        } catch (IOException ioe) {
        }
        throw new SOCKSException("Error in destination format", e);
    } catch (IOException e) {
        try {
            sendRequestReply(Reply.CONNECTION_REFUSED, InetAddress.getByName("127.0.0.1"), 0, out);
        } catch (IOException ioe) {
        }
        throw new SOCKSException("Error connecting", e);
    } catch (I2PException e) {
        try {
            sendRequestReply(Reply.CONNECTION_REFUSED, InetAddress.getByName("127.0.0.1"), 0, out);
        } catch (IOException ioe) {
        }
        throw new SOCKSException("Error connecting", e);
    }
    return destSock;
}

Example 32 with DataFormatException

use of net.i2p.data.DataFormatException in project i2p.i2p by i2p.

the class ConvertToHash method getHash.

/**
 *  Convert any kind of destination String to a hash
 *
 *  @return null on failure
 */
public static Hash getHash(String peer) {
    if (peer == null)
        return null;
    String peerLC = peer.toLowerCase(Locale.US);
    // b64 hash
    if (peer.length() == 44 && !peerLC.endsWith(".i2p")) {
        byte[] b = Base64.decode(peer);
        if (b != null && b.length == Hash.HASH_LENGTH)
            return Hash.create(b);
    }
    // b64 hash.i2p
    if (peer.length() == 48 && peerLC.endsWith(".i2p")) {
        byte[] b = Base64.decode(peer.substring(0, 44));
        if (b != null && b.length == Hash.HASH_LENGTH)
            return Hash.create(b);
    }
    // b64 dest.i2p
    if (peer.length() >= 520 && peerLC.endsWith(".i2p")) {
        try {
            Destination d = new Destination();
            d.fromBase64(peer.substring(0, peer.length() - 4));
            return d.calculateHash();
        } catch (DataFormatException dfe) {
        }
    }
    // b64 dest
    if (peer.length() >= 516 && !peerLC.endsWith(".i2p")) {
        try {
            Destination d = new Destination();
            d.fromBase64(peer);
            return d.calculateHash();
        } catch (DataFormatException dfe) {
        }
    }
    // even if the leaseset is not found
    if (peer.length() == 60 && peerLC.endsWith(".b32.i2p")) {
        byte[] b = Base32.decode(peer.substring(0, 52));
        if (b != null && b.length == Hash.HASH_LENGTH)
            return Hash.create(b);
    }
    // b32 hash
    if (peer.length() == 52 && !peerLC.endsWith(".i2p")) {
        byte[] b = Base32.decode(peer);
        if (b != null && b.length == Hash.HASH_LENGTH)
            return Hash.create(b);
    }
    // example.i2p
    Destination d = I2PAppContext.getGlobalContext().namingService().lookup(peer);
    if (d != null)
        return d.calculateHash();
    return null;
}

Example 33 with DataFormatException

use of net.i2p.data.DataFormatException in project i2p.i2p by i2p.

the class ReconfigureSessionMessage method doWriteMessage.

@Override
protected byte[] doWriteMessage() throws I2CPMessageException, IOException {
    if (_sessionId == null || _sessionConfig == null)
        throw new I2CPMessageException("Unable to write out the message as there is not enough data");
    ByteArrayOutputStream os = new ByteArrayOutputStream(64);
    try {
        _sessionId.writeBytes(os);
        _sessionConfig.writeBytes(os);
    } catch (DataFormatException dfe) {
        throw new I2CPMessageException("Error writing out the message data", dfe);
    }
    return os.toByteArray();
}

Example 34 with DataFormatException

use of net.i2p.data.DataFormatException in project i2p.i2p by i2p.

the class ReportAbuseMessage method doWriteMessage.

@Override
protected byte[] doWriteMessage() throws I2CPMessageException, IOException {
    if ((_sessionId == null) || (_severity == null) || (_reason == null))
        throw new I2CPMessageException("Not enough information to construct the message");
    ByteArrayOutputStream os = new ByteArrayOutputStream(32);
    try {
        _sessionId.writeBytes(os);
        _severity.writeBytes(os);
        _reason.writeBytes(os);
        if (_messageId == null) {
            _messageId = new MessageId();
            _messageId.setMessageId(0);
        }
        _messageId.writeBytes(os);
    } catch (DataFormatException dfe) {
        throw new I2CPMessageException("Error writing out the message data", dfe);
    }
    return os.toByteArray();
}

Example 35 with DataFormatException

use of net.i2p.data.DataFormatException in project i2p.i2p by i2p.

the class RequestLeaseSetMessage method doReadMessage.

@Override
protected void doReadMessage(InputStream in, int size) throws I2CPMessageException, IOException {
    try {
        _sessionId = new SessionId();
        _sessionId.readBytes(in);
        int numTunnels = (int) DataHelper.readLong(in, 1);
        _endpoints.clear();
        for (int i = 0; i < numTunnels; i++) {
            // Hash router = new Hash();
            // router.readBytes(in);
            Hash router = Hash.create(in);
            TunnelId tunnel = new TunnelId();
            tunnel.readBytes(in);
            _endpoints.add(new TunnelEndpoint(router, tunnel));
        }
        _end = DataHelper.readDate(in);
    } catch (DataFormatException dfe) {
        throw new I2CPMessageException("Unable to load the message data", dfe);
    }
}