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

Example 26 with DataFormatException

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

the class HostLookupMessage method doWriteMessage.

protected byte[] doWriteMessage() throws I2CPMessageException, IOException {
    int len;
    if (_lookupType == LOOKUP_HASH) {
        if (_hash == null)
            throw new I2CPMessageException("Unable to write out the message as there is not enough data");
        len = 11 + Hash.HASH_LENGTH;
    } else if (_lookupType == LOOKUP_HOST) {
        if (_host == null)
            throw new I2CPMessageException("Unable to write out the message as there is not enough data");
        len = 12 + _host.length();
    } else {
        throw new I2CPMessageException("bad type");
    }
    ByteArrayOutputStream os = new ByteArrayOutputStream(len);
    try {
        _sessionId.writeBytes(os);
        DataHelper.writeLong(os, 4, _reqID);
        DataHelper.writeLong(os, 4, _timeout);
        DataHelper.writeLong(os, 1, _lookupType);
        if (_lookupType == LOOKUP_HASH) {
            _hash.writeBytes(os);
        } else {
            DataHelper.writeString(os, _host);
        }
    } catch (DataFormatException dfe) {
        throw new I2CPMessageException("bad data", dfe);
    }
    return os.toByteArray();
}

Example 27 with DataFormatException

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

the class HostReplyMessage method doWriteMessage.

protected byte[] doWriteMessage() throws I2CPMessageException, IOException {
    int len = 7;
    if (_code == RESULT_SUCCESS) {
        if (_dest == null)
            throw new I2CPMessageException("Unable to write out the message as there is not enough data");
        len += _dest.size();
    }
    ByteArrayOutputStream os = new ByteArrayOutputStream(len);
    try {
        _sessionId.writeBytes(os);
        DataHelper.writeLong(os, 4, _reqID);
        DataHelper.writeLong(os, 1, _code);
        if (_code == RESULT_SUCCESS)
            _dest.writeBytes(os);
    } catch (DataFormatException dfe) {
        throw new I2CPMessageException("bad data", dfe);
    }
    return os.toByteArray();
}

Example 28 with DataFormatException

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

the class I2CPMessageHandler method readMessage.

/**
 * Read an I2CPMessage from the stream and return the fully populated object.
 *
 * @param in I2CP input stream
 * @return Fully populated I2CPMessage
 * @throws IOException if there is an IO problem reading from the stream
 * @throws I2CPMessageException if there is a problem handling the particular
 *          message - if it is an unknown type or has improper formatting, etc.
 */
public static I2CPMessage readMessage(InputStream in) throws IOException, I2CPMessageException {
    int length;
    try {
        length = (int) DataHelper.readLong(in, 4);
    } catch (DataFormatException dfe) {
        throw new IOException("Connection closed");
    }
    if (length > MAX_LENGTH)
        throw new I2CPMessageException("Invalid message length specified");
    try {
        int type = (int) DataHelper.readLong(in, 1);
        I2CPMessage msg = createMessage(type);
        // Note that the readMessage() calls don't, in general, read and discard
        // extra data, so we can't add new fields to the end of messages
        // in a compatible way. And the readers could read beyond the length too.
        // To fix this we'd have to read into a BAOS/BAIS or use a filter input stream
        msg.readMessage(in, length, type);
        return msg;
    } catch (DataFormatException dfe) {
        throw new I2CPMessageException("Error reading the message", dfe);
    }
}

Example 29 with DataFormatException

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

the class MessagePayloadMessage method doReadMessage.

@Override
protected void doReadMessage(InputStream in, int size) throws I2CPMessageException, IOException {
    try {
        _sessionId = (int) DataHelper.readLong(in, 2);
        _messageId = DataHelper.readLong(in, 4);
        _payload = new Payload();
        _payload.readBytes(in);
    } catch (DataFormatException dfe) {
        throw new I2CPMessageException("Unable to load the message data", dfe);
    }
}

Example 30 with DataFormatException

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

the class CreateLeaseSetMessage method doWriteMessage.

@Override
protected byte[] doWriteMessage() throws I2CPMessageException, IOException {
    if ((_sessionId == null) || (_signingPrivateKey == null) || (_privateKey == null) || (_leaseSet == null))
        throw new I2CPMessageException("Unable to write out the message as there is not enough data");
    int size = // sessionId
    4 + _signingPrivateKey.length() + PrivateKey.KEYSIZE_BYTES + _leaseSet.size();
    ByteArrayOutputStream os = new ByteArrayOutputStream(size);
    try {
        _sessionId.writeBytes(os);
        _signingPrivateKey.writeBytes(os);
        _privateKey.writeBytes(os);
        _leaseSet.writeBytes(os);
    } catch (DataFormatException dfe) {
        throw new I2CPMessageException("Error writing out the message data", dfe);
    }
    return os.toByteArray();
}