Examples with I2PException net.i2p.I2PException used on opensource projects

Example 26 with I2PException

use of net.i2p.I2PException in project i2p.i2p by i2p.

the class StreamSinkClient method runClient.

/**
 * Actually connect and run the client - this call blocks until completion.
 */
public void runClient() {
    I2PSocketManager mgr = null;
    if (_i2cpHost != null)
        mgr = I2PSocketManagerFactory.createManager(_i2cpHost, _i2cpPort, new Properties());
    else
        mgr = I2PSocketManagerFactory.createManager();
    Destination peer = null;
    FileInputStream fis = null;
    try {
        fis = new FileInputStream(_peerDestFile);
        peer = new Destination();
        peer.readBytes(fis);
    } catch (IOException ioe) {
        _log.error("Error finding the peer destination to contact in " + _peerDestFile, ioe);
        return;
    } catch (DataFormatException dfe) {
        _log.error("Peer destination is not valid in " + _peerDestFile, dfe);
        return;
    } finally {
        if (fis != null)
            try {
                fis.close();
            } catch (IOException ioe) {
            }
    }
    if (_log.shouldLog(Log.DEBUG))
        _log.debug("Send " + _sendSize + "KB to " + peer.calculateHash().toBase64());
    while (true) {
        try {
            I2PSocket sock = mgr.connect(peer);
            byte[] buf = new byte[Math.min(32 * 1024, _sendSize * 1024)];
            Random rand = new Random();
            OutputStream out = sock.getOutputStream();
            long beforeSending = System.currentTimeMillis();
            for (int i = 0; (_sendSize < 0) || (i < _sendSize); i += buf.length / 1024) {
                rand.nextBytes(buf);
                out.write(buf);
                if (_log.shouldLog(Log.DEBUG))
                    _log.debug("Wrote " + ((1 + i * buf.length) / 1024) + "/" + _sendSize + "KB");
                if (_writeDelay > 0) {
                    try {
                        Thread.sleep(_writeDelay);
                    } catch (InterruptedException ie) {
                    }
                }
            }
            sock.close();
            long afterSending = System.currentTimeMillis();
            if (_log.shouldLog(Log.DEBUG))
                _log.debug("Sent " + _sendSize + "KB in " + (afterSending - beforeSending) + "ms");
        } catch (InterruptedIOException iie) {
            _log.error("Timeout connecting to the peer", iie);
        // return;
        } catch (NoRouteToHostException nrthe) {
            _log.error("Unable to connect to the peer", nrthe);
        // return;
        } catch (ConnectException ce) {
            _log.error("Connection already dropped", ce);
        // return;
        } catch (I2PException ie) {
            _log.error("Error connecting to the peer", ie);
            return;
        } catch (IOException ioe) {
            _log.error("IO error sending", ioe);
            return;
        }
    }
}

Example 27 with I2PException

use of net.i2p.I2PException in project i2p.i2p by i2p.

the class PrivateKeyFile method main.

/**
 *  Create a new PrivateKeyFile, or modify an existing one, with various
 *  types of Certificates.
 *
 *  Changing a Certificate does not change the public or private keys.
 *  But it does change the Destination Hash, which effectively makes it
 *  a new Destination. In other words, don't change the Certificate on
 *  a Destination you've already registered in a hosts.txt key add form.
 *
 *  Copied and expanded from that in Destination.java
 */
public static void main(String[] args) {
    int hashEffort = HASH_EFFORT;
    String stype = null;
    String hostname = null;
    int mode = 0;
    boolean error = false;
    Getopt g = new Getopt("pkf", args, "t:nuxhse:c:a:");
    int c;
    while ((c = g.getopt()) != -1) {
        switch(c) {
            case 'c':
                stype = g.getOptarg();
                break;
            case 't':
                stype = g.getOptarg();
            case 'n':
            case 'u':
            case 'x':
            case 'h':
            case 's':
                if (mode == 0)
                    mode = c;
                else
                    error = true;
                break;
            case 'a':
                hostname = g.getOptarg();
                if (mode == 0)
                    mode = c;
                else
                    error = true;
                break;
            case 'e':
                hashEffort = Integer.parseInt(g.getOptarg());
                break;
            case '?':
            case ':':
            default:
                error = true;
                break;
        }
    // switch
    }
    // while
    int remaining = args.length - g.getOptind();
    int reqd = mode == 's' ? 2 : 1;
    if (error || remaining != reqd) {
        usage();
        System.exit(1);
    }
    String filearg = args[g.getOptind()];
    I2PClient client = I2PClientFactory.createClient();
    try {
        File f = new File(filearg);
        boolean exists = f.exists();
        PrivateKeyFile pkf = new PrivateKeyFile(f, client);
        Destination d;
        if (stype != null) {
            SigType type = SigType.parseSigType(stype);
            if (type == null)
                throw new IllegalArgumentException("Signature type " + stype + " is not supported");
            d = pkf.createIfAbsent(type);
        } else {
            d = pkf.createIfAbsent();
        }
        if (exists)
            System.out.println("Original Destination:");
        else
            System.out.println("Created Destination:");
        System.out.println(pkf);
        verifySignature(d);
        switch(mode) {
            case 0:
                // we are done
                break;
            case 'n':
                // Cert constructor generates a null cert
                pkf.setCertType(Certificate.CERTIFICATE_TYPE_NULL);
                System.out.println("New destination with null cert is:");
                break;
            case 'u':
                pkf.setCertType(99);
                System.out.println("New destination with unknown cert is:");
                break;
            case 'x':
                pkf.setCertType(Certificate.CERTIFICATE_TYPE_HIDDEN);
                System.out.println("New destination with hidden cert is:");
                break;
            case 'h':
                System.out.println("Estimating hashcash generation time, stand by...");
                System.out.println(estimateHashCashTime(hashEffort));
                pkf.setHashCashCert(hashEffort);
                System.out.println("New destination with hashcash cert is:");
                break;
            case 's':
                // Sign dest1 with dest2's Signing Private Key
                PrivateKeyFile pkf2 = new PrivateKeyFile(args[g.getOptind() + 1]);
                pkf.setSignedCert(pkf2);
                System.out.println("New destination with signed cert is:");
                break;
            case 't':
                // KeyCert
                SigType type = SigType.parseSigType(stype);
                if (type == null)
                    throw new IllegalArgumentException("Signature type " + stype + " is not supported");
                pkf.setKeyCert(type);
                System.out.println("New destination with key cert is:");
                break;
            case 'a':
                // addressbook auth
                OrderedProperties props = new OrderedProperties();
                HostTxtEntry he = new HostTxtEntry(hostname, d.toBase64(), props);
                he.sign(pkf.getSigningPrivKey());
                System.out.println("Addressbook Authentication String:");
                OutputStreamWriter out = new OutputStreamWriter(System.out);
                he.write(out);
                out.flush();
                System.out.println("");
                return;
            default:
                // shouldn't happen
                usage();
                return;
        }
        if (mode != 0) {
            System.out.println(pkf);
            pkf.write();
            verifySignature(pkf.getDestination());
        }
    } catch (I2PException e) {
        e.printStackTrace();
        System.exit(1);
    } catch (IOException e) {
        e.printStackTrace();
        System.exit(1);
    }
}

Example 28 with I2PException

use of net.i2p.I2PException in project i2p.i2p by i2p.

the class GeneralHelper method getDestination.

/**
 *  Works even if tunnel is not running.
 *  @return Destination or null
 */
public Destination getDestination(int tunnel) {
    TunnelController tun = getController(tunnel);
    if (tun != null) {
        Destination rv = tun.getDestination();
        if (rv != null)
            return rv;
        // if not running, do this the hard way
        File keyFile = tun.getPrivateKeyFile();
        if (keyFile != null) {
            PrivateKeyFile pkf = new PrivateKeyFile(keyFile);
            try {
                rv = pkf.getDestination();
                if (rv != null)
                    return rv;
            } catch (I2PException e) {
            } catch (IOException e) {
            }
        }
    }
    return null;
}

Example 29 with I2PException

use of net.i2p.I2PException in project i2p.i2p by i2p.

the class SOCKS5Server 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, SOCKS5, HTTP CONNECT...).
    I2PSocket destSock;
    try {
        if (connHostName.toLowerCase(Locale.US).endsWith(".i2p")) {
            // Let's not do a new Dest for every request, huh?
            // I2PSocketManager sm = I2PSocketManagerFactory.createManager();
            // destSock = sm.connect(I2PTunnel.destFromName(connHostName), null);
            Destination dest = _context.namingService().lookup(connHostName);
            if (dest == null) {
                try {
                    sendRequestReply(Reply.HOST_UNREACHABLE, AddressType.DOMAINNAME, null, "0.0.0.0", 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_NOT_ALLOWED_BY_RULESET, AddressType.DOMAINNAME, null, "0.0.0.0", 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";
         *                _log.error(err);
         *                try {
         *                    sendRequestReply(Reply.CONNECTION_NOT_ALLOWED_BY_RULESET, AddressType.DOMAINNAME, null, "0.0.0.0", 0, out);
         *                } catch (IOException ioe) {}
         *                throw new SOCKSException(err);
         ***
         */
        } else {
            Outproxy outproxy = getOutproxyPlugin();
            if (outproxy != null) {
                // but here, we wrap a Socket in a I2PSocket and use the regular Runner.
                try {
                    destSock = new SocketWrapper(outproxy.connect(connHostName, connPort));
                } catch (IOException ioe) {
                    try {
                        sendRequestReply(Reply.HOST_UNREACHABLE, AddressType.DOMAINNAME, null, "0.0.0.0", 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";
                    _log.error(err);
                    try {
                        sendRequestReply(Reply.CONNECTION_NOT_ALLOWED_BY_RULESET, AddressType.DOMAINNAME, null, "0.0.0.0", 0, out);
                    } catch (IOException ioe) {
                    }
                    throw new SOCKSException(err);
                }
                int p = _context.random().nextInt(proxies.size());
                String proxy = proxies.get(p);
                if (_log.shouldLog(Log.DEBUG))
                    _log.debug("connecting to proxy " + proxy + " for " + connHostName + " port " + connPort);
                try {
                    destSock = outproxyConnect(t, proxy);
                } catch (SOCKSException se) {
                    try {
                        sendRequestReply(Reply.HOST_UNREACHABLE, AddressType.DOMAINNAME, null, "0.0.0.0", 0, out);
                    } catch (IOException ioe) {
                    }
                    throw se;
                }
            }
        }
        confirmConnection();
        _log.debug("connection confirmed - exchanging data...");
    } catch (DataFormatException e) {
        if (_log.shouldLog(Log.WARN))
            _log.warn("socks error", e);
        try {
            sendRequestReply(Reply.HOST_UNREACHABLE, AddressType.DOMAINNAME, null, "0.0.0.0", 0, out);
        } catch (IOException ioe) {
        }
        throw new SOCKSException("Error in destination format");
    } catch (IOException e) {
        if (_log.shouldLog(Log.WARN))
            _log.warn("socks error", e);
        try {
            sendRequestReply(Reply.HOST_UNREACHABLE, AddressType.DOMAINNAME, null, "0.0.0.0", 0, out);
        } catch (IOException ioe) {
        }
        throw new SOCKSException("Connection error", e);
    } catch (I2PException e) {
        if (_log.shouldLog(Log.WARN))
            _log.warn("socks error", e);
        try {
            sendRequestReply(Reply.HOST_UNREACHABLE, AddressType.DOMAINNAME, null, "0.0.0.0", 0, out);
        } catch (IOException ioe) {
        }
        throw new SOCKSException("Connection error", e);
    }
    return destSock;
}

Example 30 with I2PException

use of net.i2p.I2PException in project i2p.i2p by i2p.

the class ConnectionPacketHandler method verifySignature.

/**
 * Verify the signature if necessary.
 *
 * @throws I2PException if the signature was necessary and it was invalid
 */
private void verifySignature(Packet packet, Connection con) throws I2PException {
    // verify the signature if necessary
    if (con.getOptions().getRequireFullySigned() || packet.isFlagSet(Packet.FLAG_SYNCHRONIZE | Packet.FLAG_CLOSE)) {
        // we need a valid signature
        Destination from = con.getRemotePeer();
        if (from == null)
            from = packet.getOptionalFrom();
        boolean sigOk = packet.verifySignature(_context, from, null);
        if (!sigOk) {
            throw new I2PException("Received unsigned / forged packet: " + packet);
        }
    }
}