Examples of org.apache.commons.net.MalformedServerReplyException

org.apache.commons.net.MalformedServerReplyException
This exception is used to indicate that the reply from a server could not be interpreted. Most of the NetComponents classes attempt to be as lenient as possible when receiving server replies. Many server implementations deviate from IETF protocol specifications, making it necessary to be as flexible as possible. However, there will be certain situations where it is not possible to continue an operation because the server reply could not be interpreted in a meaningful manner. In these cases, a MalformedServerReplyException should be thrown.

@author Daniel F. Savarese

        }


        // In case we run into an anomaly we don't want fatal index exceptions
        // to be thrown.
        if (_replyString.length() < 3) {
            throw new MalformedServerReplyException(
                "Truncated server reply: " + _replyString);
        }


        try
        {
            _replyCode = Integer.parseInt(_replyString.substring(0, 3));
        }
        catch (NumberFormatException e)
        {
            throw new MalformedServerReplyException(
                "Could not parse response code.\nServer Reply: " + _replyString);
        }


        fireReplyReceived(_replyCode, _replyString + SocketClient.NETASCII_EOL);

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    protected void _parsePassiveModeReply(String reply)
    throws MalformedServerReplyException
    {
        java.util.regex.Matcher m = __PARMS_PAT.matcher(reply);
        if (!m.find()) {
            throw new MalformedServerReplyException(
                    "Could not parse passive host information.\nServer Reply: " + reply);
        }


        __passiveHost = m.group(1).replace(',', '.'); // Fix up to look like IP address


        try
        {
            int oct1 = Integer.parseInt(m.group(2));
            int oct2 = Integer.parseInt(m.group(3));
            __passivePort = (oct1 << 8) | oct2;
        }
        catch (NumberFormatException e)
        {
            throw new MalformedServerReplyException(
                    "Could not parse passive port information.\nServer Reply: " + reply);
        }


        if (__passiveNatWorkaround) {
            try {
                InetAddress host = InetAddress.getByName(__passiveHost);
                // reply is a local address, but target is not - assume NAT box changed the PASV reply
                if (host.isSiteLocalAddress()) {
                    InetAddress remote = getRemoteAddress();
                    if (!remote.isSiteLocalAddress()){
                        String hostAddress = remote.getHostAddress();
                        fireReplyReceived(0,
                                    "[Replacing site local address "+__passiveHost+" with "+hostAddress+"]\n");
                        __passiveHost = hostAddress;
                    }
                }
            } catch (UnknownHostException e) { // Should not happen as we are passing in an IP address
                throw new MalformedServerReplyException(
                        "Could not parse passive host information.\nServer Reply: " + reply);
            }
        }
    }

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        delim3 = reply.charAt(2);
        delim4 = reply.charAt(reply.length()-1);


        if (!(delim1 == delim2) || !(delim2 == delim3)
                || !(delim3 == delim4)) {
            throw new MalformedServerReplyException(
                    "Could not parse extended passive host information.\nServer Reply: " + reply);
        }


        int port;
        try
        {
            port = Integer.parseInt(reply.substring(3, reply.length()-1));
        }
        catch (NumberFormatException e)
        {
            throw new MalformedServerReplyException(
                    "Could not parse extended passive host information.\nServer Reply: " + reply);
        }




        // in EPSV mode, the passive host address is implicit

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        // In case we run into an anomaly we don't want fatal index exceptions
        // to be thrown.
        length = line.length();
        if (length < REPLY_CODE_LEN) {
            throw new MalformedServerReplyException(
                "Truncated server reply: " + line);
        }


        String code = null;
        try
        {
            code = line.substring(0, REPLY_CODE_LEN);
            _replyCode = Integer.parseInt(code);
        }
        catch (NumberFormatException e)
        {
            throw new MalformedServerReplyException(
                "Could not parse response code.\nServer Reply: " + line);
        }


        _replyLines.add(line);

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            index = Integer.parseInt(octet1);
            lastIndex = Integer.parseInt(octet2);
        }
        catch (NumberFormatException e)
        {
            throw new MalformedServerReplyException(
                "Could not parse passive host information.\nServer Reply: " + reply);
        }


        index <<= 8;
        index |= lastIndex;

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    private void __parsePassiveModeReply(String reply)
    throws MalformedServerReplyException
    {
        java.util.regex.Matcher m = __parms_pat.matcher(reply);
        if (!m.find()) {
            throw new MalformedServerReplyException(
                    "Could not parse passive host information.\nServer Reply: " + reply);
        }
        reply = m.group();
        String parts[] = m.group().split(",");


        __passiveHost = parts[0] + '.' + parts[1] + '.' + parts[2] + '.' + parts[3];


        try
        {
            int oct1 = Integer.parseInt(parts[4]);
            int oct2 = Integer.parseInt(parts[5]);
            __passivePort = (oct1 << 8) | oct2;
        }
        catch (NumberFormatException e)
        {
            throw new MalformedServerReplyException(
                    "Could not parse passive host information.\nServer Reply: " + reply);
        }


    }

View Full Code Here

        delim3 = reply.charAt(2);
        delim4 = reply.charAt(reply.length()-1);


        if (!(delim1 == delim2) || !(delim2 == delim3)
                || !(delim3 == delim4))
            throw new MalformedServerReplyException(
                    "Could not parse extended passive host information.\nServer Reply: " + reply);
        try
        {
            port = Integer.parseInt(reply.substring(3, reply.length()-1));
        }
        catch (NumberFormatException e)
        {
            throw new MalformedServerReplyException(
                    "Could not parse extended passive host information.\nServer Reply: " + reply);
        }




        // in EPSV mode, the passive host address is implicit

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        // In case we run into an anomaly we don't want fatal index exceptions
        // to be thrown.
        length = line.length();
        if (length < 3)
            throw new MalformedServerReplyException(
                "Truncated server reply: " + line);


        String code = null;
        try
        {
            code = line.substring(0, 3);
            _replyCode = Integer.parseInt(code);
        }
        catch (NumberFormatException e)
        {
            throw new MalformedServerReplyException(
                "Could not parse response code.\nServer Reply: " + line);
        }


        _replyLines.add(line);

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        if (line.startsWith(_OK))
            _replyCode = POP3Reply.OK;
        else if (line.startsWith(_ERROR))
            _replyCode = POP3Reply.ERROR;
        else
            throw new
            MalformedServerReplyException(
                "Received invalid POP3 protocol response from server.");


        _replyLines.addElement(line);
        _lastReplyLine = line;

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        // In case we run into an anomaly we don't want fatal index exceptions
        // to be thrown.
        length = line.length();
        if (length < 3)
            throw new MalformedServerReplyException(
                "Truncated server reply: " + line);


        try
        {
            String code = line.substring(0, 3);
            _replyCode = Integer.parseInt(code);
        }
        catch (NumberFormatException e)
        {
            throw new MalformedServerReplyException(
                "Could not parse response code.\nServer Reply: " + line);
        }


        _replyLines.add(line);

View Full Code Here

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