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

Example 1 with Destination

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

the class NetDbRenderer method renderLeaseSetHTML.

/**
 *  @param debug @since 0.7.14 sort by distance from us, display
 *               median distance, and other stuff, useful when floodfill
 */
public void renderLeaseSetHTML(Writer out, boolean debug) throws IOException {
    StringBuilder buf = new StringBuilder(4 * 1024);
    if (debug)
        buf.append("<p id=\"debugmode\">Debug mode - Sorted by hash distance, closest first</p>\n");
    Hash ourRKey;
    Set<LeaseSet> leases;
    DecimalFormat fmt;
    if (debug) {
        ourRKey = _context.routerHash();
        leases = new TreeSet<LeaseSet>(new LeaseSetRoutingKeyComparator(ourRKey));
        fmt = new DecimalFormat("#0.00");
    } else {
        ourRKey = null;
        leases = new TreeSet<LeaseSet>(new LeaseSetComparator());
        fmt = null;
    }
    leases.addAll(_context.netDb().getLeases());
    int medianCount = 0;
    int rapCount = 0;
    BigInteger median = null;
    int c = 0;
    // Summary
    FloodfillNetworkDatabaseFacade netdb = (FloodfillNetworkDatabaseFacade) _context.netDb();
    if (debug) {
        buf.append("<table id=\"leasesetdebug\">\n");
    } else {
        buf.append("<table id=\"leasesetsummary\">\n");
    }
    buf.append("<tr><th colspan=\"3\">Leaseset Summary</th>").append("<th><a href=\"/configadvanced\" title=\"").append(_t("Manually Configure Floodfill Participation")).append("\">[").append(_t("Configure Floodfill Participation")).append("]</a></th></tr>\n").append("<tr><td><b>Total Leasesets:</b></td><td colspan=\"3\">").append(leases.size()).append("</td></tr>\n");
    if (debug) {
        buf.append("<tr><td><b>Published (RAP) Leasesets:</b></td><td colspan=\"3\">").append(netdb.getKnownLeaseSets()).append("</td></tr>\n").append("<tr><td><b>Mod Data:</b></td><td>").append(DataHelper.getUTF8(_context.routerKeyGenerator().getModData())).append("</td>").append("<td><b>Last Changed:</b></td><td>").append(new Date(_context.routerKeyGenerator().getLastChanged())).append("</td></tr>\n").append("<tr><td><b>Next Mod Data:</b></td><td>").append(DataHelper.getUTF8(_context.routerKeyGenerator().getNextModData())).append("</td>").append("<td><b>Change in:</b></td><td>").append(DataHelper.formatDuration(_context.routerKeyGenerator().getTimeTillMidnight())).append("</td></tr>\n");
    }
    int ff = _context.peerManager().getPeersByCapability(FloodfillNetworkDatabaseFacade.CAPABILITY_FLOODFILL).size();
    buf.append("<tr><td><b>Known Floodfills:</b></td><td colspan=\"3\">").append(ff).append("</td></tr>\n").append("<tr><td><b>Currently Floodfill?</b></td><td colspan=\"3\">").append(netdb.floodfillEnabled() ? "yes" : "no").append("</td></tr>\n");
    buf.append("</table>\n");
    if (leases.isEmpty()) {
        if (!debug)
            buf.append("<div id=\"noleasesets\"><i>").append(_t("No Leasesets currently active.")).append("</i></div>");
    } else {
        if (debug) {
            // Find the center of the RAP leasesets
            for (LeaseSet ls : leases) {
                if (ls.getReceivedAsPublished())
                    rapCount++;
            }
            medianCount = rapCount / 2;
        }
        boolean linkSusi = WebAppStarter.isWebAppRunning("susidns");
        long now = _context.clock().now();
        buf.append("<div class=\"leasesets_container\">");
        for (LeaseSet ls : leases) {
            Destination dest = ls.getDestination();
            Hash key = dest.calculateHash();
            buf.append("<table class=\"leaseset\">\n").append("<tr><th><b>").append(_t("LeaseSet")).append(":</b>&nbsp;<code>").append(key.toBase64()).append("</code>");
            if (_context.keyRing().get(key) != null)
                buf.append(" (").append(_t("Encrypted")).append(')');
            buf.append("</th>");
            if (_context.clientManager().isLocal(dest)) {
                buf.append("<th><a href=\"tunnels#" + key.toBase64().substring(0, 4) + "\">" + _t("Local") + "</a> ");
                boolean unpublished = !_context.clientManager().shouldPublishLeaseSet(key);
                if (unpublished)
                    buf.append("<b>").append(_t("Unpublished")).append("</b> ");
                buf.append("<b>").append(_t("Destination")).append(":</b> ");
                TunnelPoolSettings in = _context.tunnelManager().getInboundSettings(key);
                if (in != null && in.getDestinationNickname() != null)
                    buf.append(in.getDestinationNickname());
                else
                    buf.append(dest.toBase64().substring(0, 6));
                buf.append("</th></tr>\n<tr><td");
                // If the dest is published but not in the addressbook, an extra
                // <td> is appended with an "Add to addressbook" link, so this
                // <td> should not span 2 columns.
                String host = null;
                if (!unpublished) {
                    host = _context.namingService().reverseLookup(dest);
                }
                if (unpublished || host != null || !linkSusi) {
                    buf.append(" colspan=\"2\"");
                }
                buf.append(">");
                String b32 = dest.toBase32();
                buf.append("<a href=\"http://").append(b32).append("\">").append(b32).append("</a></td>");
                if (linkSusi && !unpublished) {
                    if (host == null) {
                        buf.append("<td class=\"addtobook\" colspan=\"2\">").append("<a title=\"").append(_t("Add to addressbook")).append("\" href=\"/susidns/addressbook.jsp?book=private&amp;destination=").append(dest.toBase64()).append("#add\">").append(_t("Add to local addressbook")).append("</a></td>");
                    }
                }
            // else probably a client
            } else {
                buf.append("<th><b>").append(_t("Destination")).append(":</b> ");
                String host = _context.namingService().reverseLookup(dest);
                if (host != null) {
                    buf.append("<a href=\"http://").append(host).append("/\">").append(host).append("</a></th>");
                } else {
                    String b32 = dest.toBase32();
                    buf.append("<code>").append(dest.toBase64().substring(0, 6)).append("</code></th>").append("</tr>\n<tr><td");
                    if (!linkSusi)
                        buf.append(" colspan=\"2\"");
                    buf.append("><a href=\"http://").append(b32).append("\">").append(b32).append("</a></td>\n");
                    if (linkSusi) {
                        buf.append("<td class=\"addtobook\"><a title=\"").append(_t("Add to addressbook")).append("\" href=\"/susidns/addressbook.jsp?book=private&amp;destination=").append(dest.toBase64()).append("#add\">").append(_t("Add to local addressbook")).append("</a></td>");
                    }
                }
            }
            buf.append("</tr>\n<tr><td colspan=\"2\">\n");
            long exp = ls.getLatestLeaseDate() - now;
            if (exp > 0)
                buf.append("<b>").append(_t("Expires in {0}", DataHelper.formatDuration2(exp))).append("</b>");
            else
                buf.append("<b>").append(_t("Expired {0} ago", DataHelper.formatDuration2(0 - exp))).append("</b>");
            buf.append("</td></tr>\n");
            if (debug) {
                buf.append("<tr><td colspan=\"2\">");
                buf.append("<b>RAP?</b> ").append(ls.getReceivedAsPublished());
                buf.append("&nbsp;&nbsp;<b>RAR?</b> ").append(ls.getReceivedAsReply());
                BigInteger dist = HashDistance.getDistance(ourRKey, ls.getRoutingKey());
                if (ls.getReceivedAsPublished()) {
                    if (c++ == medianCount)
                        median = dist;
                }
                buf.append("&nbsp;&nbsp;<b>Distance: </b>").append(fmt.format(biLog2(dist)));
                buf.append("</td></tr>\n<tr><td colspan=\"2\">");
                // buf.append(dest.toBase32()).append("<br>");
                buf.append("<b>Signature type:</b> ").append(dest.getSigningPublicKey().getType());
                buf.append("&nbsp;&nbsp;<b>Encryption Key:</b> ").append(ls.getEncryptionKey().toBase64().substring(0, 20)).append("&hellip;");
                buf.append("</td></tr>\n<tr><td colspan=\"2\">");
                buf.append("<b>Routing Key:</b> ").append(ls.getRoutingKey().toBase64());
                buf.append("</td></tr>");
            }
            buf.append("<tr><td colspan=\"2\"><ul class=\"netdb_leases\">");
            for (int i = 0; i < ls.getLeaseCount(); i++) {
                Lease lease = ls.getLease(i);
                buf.append("<li><b>").append(_t("Lease")).append(' ').append(i + 1).append(":</b> <span class=\"netdb_gateway\" title=\"").append(_t("Gateway")).append("\"><img src=\"themes/console/images/info/gateway.png\" alt=\"").append(_t("Gateway")).append("\"></span> <span class=\"tunnel_peer\">");
                buf.append(_context.commSystem().renderPeerHTML(lease.getGateway()));
                buf.append("</span> <span class=\"netdb_tunnel\">").append(_t("Tunnel")).append(" <span class=\"tunnel_id\">").append(lease.getTunnelId().getTunnelId()).append("</span></span> ");
                if (debug) {
                    long exl = lease.getEndDate().getTime() - now;
                    if (exl > 0)
                        buf.append("<b class=\"netdb_expiry\">").append(_t("Expires in {0}", DataHelper.formatDuration2(exl))).append("</b>");
                    else
                        buf.append("<b class=\"netdb_expiry\">").append(_t("Expired {0} ago", DataHelper.formatDuration2(0 - exl))).append("</b>");
                }
                buf.append("</li>");
            }
            buf.append("</ul></td></tr>\n");
            buf.append("</table>\n");
            out.write(buf.toString());
            buf.setLength(0);
        }
        // for each
        if (debug) {
            buf.append("<table id=\"leasesetdebug\"><tr><td><b>Network data (only valid if floodfill):</b></td><td colspan=\"3\">");
            // buf.append("</b></p><p><b>Center of Key Space (router hash): " + ourRKey.toBase64());
            if (median != null) {
                double log2 = biLog2(median);
                buf.append("</td></tr>").append("<tr><td><b>Median distance (bits):</b></td><td colspan=\"3\">").append(fmt.format(log2)).append("</td></tr>\n");
                // 2 for 4 floodfills... -1 for median
                // this can be way off for unknown reasons
                int total = (int) Math.round(Math.pow(2, 2 + 256 - 1 - log2));
                buf.append("<tr><td><b>Estimated total floodfills:</b></td><td colspan=\"3\">").append(total).append("</td></tr>\n");
                buf.append("<tr><td><b>Estimated total leasesets:</b></td><td colspan=\"3\">").append(total * rapCount / 4);
            } else {
                buf.append("<i>Not floodfill or no data.</i>");
            }
            buf.append("</td></tr></table>\n");
        }
        // median table
        buf.append("</div>");
    }
    // !empty
    out.write(buf.toString());
    out.flush();
}

Example 2 with Destination

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

the class Packet method readPacket.

/**
 * Read the packet from the buffer (starting at the offset) and return
 * the number of bytes read.
 *
 * @param buffer packet buffer containing the data
 * @param offset index into the buffer to start readign
 * @param length how many bytes within the buffer past the offset are
 *               part of the packet?
 *
 * @throws IllegalArgumentException if the data is b0rked
 */
public void readPacket(byte[] buffer, int offset, int length) throws IllegalArgumentException {
    if (buffer.length - offset < length)
        throw new IllegalArgumentException("len=" + buffer.length + " off=" + offset + " length=" + length);
    if (// min header size
    length < 22)
        throw new IllegalArgumentException("Too small: len=" + buffer.length);
    int cur = offset;
    setSendStreamId(DataHelper.fromLong(buffer, cur, 4));
    cur += 4;
    setReceiveStreamId(DataHelper.fromLong(buffer, cur, 4));
    cur += 4;
    setSequenceNum(DataHelper.fromLong(buffer, cur, 4));
    cur += 4;
    setAckThrough(DataHelper.fromLong(buffer, cur, 4));
    cur += 4;
    int numNacks = buffer[cur] & 0xff;
    cur++;
    if (length < 22 + numNacks * 4)
        throw new IllegalArgumentException("Too small with " + numNacks + " nacks: " + length);
    if (numNacks > 0) {
        long[] nacks = new long[numNacks];
        for (int i = 0; i < numNacks; i++) {
            nacks[i] = DataHelper.fromLong(buffer, cur, 4);
            cur += 4;
        }
        setNacks(nacks);
    } else {
        setNacks(null);
    }
    setResendDelay(buffer[cur] & 0xff);
    cur++;
    setFlags((int) DataHelper.fromLong(buffer, cur, 2));
    cur += 2;
    int optionSize = (int) DataHelper.fromLong(buffer, cur, 2);
    cur += 2;
    if (length < 22 + numNacks * 4 + optionSize)
        throw new IllegalArgumentException("Too small with " + numNacks + " nacks and " + optionSize + " options: " + length);
    int payloadBegin = cur + optionSize;
    int payloadSize = length - payloadBegin;
    if ((payloadSize < 0) || (payloadSize > MAX_PAYLOAD_SIZE))
        throw new IllegalArgumentException("length: " + length + " offset: " + offset + " begin: " + payloadBegin);
    // skip ahead to the payload
    // _payload = new ByteArray(new byte[payloadSize]);
    _payload = new ByteArray(buffer, payloadBegin, payloadSize);
    // ok now lets go back and deal with the options
    if (isFlagSet(FLAG_DELAY_REQUESTED)) {
        setOptionalDelay((int) DataHelper.fromLong(buffer, cur, 2));
        cur += 2;
    }
    if (isFlagSet(FLAG_FROM_INCLUDED)) {
        ByteArrayInputStream bais = new ByteArrayInputStream(buffer, cur, length - cur);
        try {
            Destination optionFrom = Destination.create(bais);
            cur += optionFrom.size();
            _optionFrom = optionFrom;
        } catch (IOException ioe) {
            throw new IllegalArgumentException("Bad from field", ioe);
        } catch (DataFormatException dfe) {
            throw new IllegalArgumentException("Bad from field", dfe);
        }
    }
    if (isFlagSet(FLAG_MAX_PACKET_SIZE_INCLUDED)) {
        setOptionalMaxSize((int) DataHelper.fromLong(buffer, cur, 2));
        cur += 2;
    }
    if (isFlagSet(FLAG_SIGNATURE_INCLUDED)) {
        Signature optionSignature;
        Destination from = getOptionalFrom();
        if (from != null) {
            optionSignature = new Signature(from.getSigningPublicKey().getType());
        } else {
            // super cheat for now, look for correct type,
            // assume no more options. If we add to the options
            // we will have to ask the manager.
            // We will get this wrong for Ed25519, same length as P256...
            // See verifySignature() below where we will recast the signature to
            // the correct type if necessary
            int siglen = payloadBegin - cur;
            SigType type = null;
            for (SigType t : SigType.values()) {
                if (t.getSigLen() == siglen) {
                    type = t;
                    break;
                }
            }
            if (type == null) {
                if (siglen < Signature.SIGNATURE_BYTES)
                    throw new IllegalArgumentException("unknown sig type len=" + siglen);
                // Hope it's the default type with some unknown options following;
                // if not the sig will fail later
                type = SigType.DSA_SHA1;
                siglen = Signature.SIGNATURE_BYTES;
            }
            optionSignature = new Signature(type);
        }
        byte[] buf = new byte[optionSignature.length()];
        System.arraycopy(buffer, cur, buf, 0, buf.length);
        optionSignature.setData(buf);
        setOptionalSignature(optionSignature);
        cur += buf.length;
    }
}

Example 3 with Destination

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

the class PacketHandler method sendReset.

/**
 *  This sends a reset back to the place this packet came from.
 *  If the packet has no 'optional from' or valid signature, this does nothing.
 *  This is not associated with a connection, so no con stats are updated.
 *
 *  @param packet incoming packet to be replied to
 */
private void sendReset(Packet packet) {
    Destination from = packet.getOptionalFrom();
    if (from == null)
        return;
    boolean ok = packet.verifySignature(_context, from, null);
    if (!ok) {
        if (_log.shouldLog(Log.WARN))
            _log.warn("Can't send reset after recv spoofed packet: " + packet);
        return;
    }
    PacketLocal reply = new PacketLocal(_context, from, packet.getSession());
    reply.setFlag(Packet.FLAG_RESET);
    reply.setFlag(Packet.FLAG_SIGNATURE_INCLUDED);
    reply.setSendStreamId(packet.getReceiveStreamId());
    reply.setReceiveStreamId(packet.getSendStreamId());
    // TODO remove this someday, as of 0.9.20 we do not require it
    reply.setOptionalFrom();
    reply.setLocalPort(packet.getLocalPort());
    reply.setRemotePort(packet.getRemotePort());
    // this just sends the packet - no retries or whatnot
    _manager.getPacketQueue().enqueue(reply);
}

Example 4 with Destination

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

the class SummaryHelper method getDestinations.

/**
 * Client destinations connected locally.
 *
 * @return html section summary
 */
public String getDestinations() {
    // convert the set to a list so we can sort by name and not lose duplicates
    List<Destination> clients = new ArrayList<Destination>(_context.clientManager().listClients());
    StringBuilder buf = new StringBuilder(512);
    boolean link = WebAppStarter.isWebAppRunning("i2ptunnel");
    buf.append("<h3>");
    if (link) {
        buf.append("<a href=\"/i2ptunnelmgr\" target=\"_top\" title=\"").append(_t("Add/remove/edit &amp; control your client and server tunnels")).append("\">");
    }
    buf.append(_t("Local Tunnels"));
    if (link) {
        buf.append("</a>");
    }
    buf.append("</h3><hr class=\"b\">");
    if (!clients.isEmpty()) {
        Collections.sort(clients, new AlphaComparator());
        buf.append("<table id=\"sb_localtunnels\">");
        for (Destination client : clients) {
            String name = getName(client);
            Hash h = client.calculateHash();
            buf.append("<tr><td align=\"right\"><img src=\"/themes/console/images/");
            if (_context.clientManager().shouldPublishLeaseSet(h))
                buf.append("server.png\" alt=\"Server\" title=\"").append(_t("Hidden Service")).append("\">");
            else
                buf.append("client.png\" alt=\"Client\" title=\"").append(_t("Client")).append("\">");
            buf.append("</td><td align=\"left\"><b><a href=\"tunnels#").append(h.toBase64().substring(0, 4));
            buf.append("\" target=\"_top\" title=\"").append(_t("Show tunnels")).append("\">");
            // Increase permitted max length of tunnel name & handle overflow with css
            if (name.length() <= 32)
                buf.append(DataHelper.escapeHTML(name));
            else
                buf.append(DataHelper.escapeHTML(ServletUtil.truncate(name, 29))).append("&hellip;");
            buf.append("</a></b></td>\n");
            LeaseSet ls = _context.netDb().lookupLeaseSetLocally(h);
            if (ls != null && _context.tunnelManager().getOutboundClientTunnelCount(h) > 0) {
                long timeToExpire = ls.getEarliestLeaseDate() - _context.clock().now();
                if (timeToExpire < 0) {
                    // red or yellow light
                    buf.append("<td><img src=\"/themes/console/images/local_inprogress.png\" alt=\"").append(_t("Rebuilding")).append("&hellip;\" title=\"").append(_t("Leases expired")).append(" ").append(DataHelper.formatDuration2(0 - timeToExpire));
                    buf.append(" ").append(_t("ago")).append(". ").append(_t("Rebuilding")).append("&hellip;\"></td></tr>\n");
                } else {
                    // green light
                    buf.append("<td><img src=\"/themes/console/images/local_up.png\" alt=\"Ready\" title=\"").append(_t("Ready")).append("\"></td></tr>\n");
                }
            } else {
                // yellow light
                buf.append("<td><img src=\"/themes/console/images/local_inprogress.png\" alt=\"").append(_t("Building")).append("&hellip;\" title=\"").append(_t("Building tunnels")).append("&hellip;\"></td></tr>\n");
            }
        }
        buf.append("</table>");
    } else {
        buf.append("<center><i>").append(_t("none")).append("</i></center>");
    }
    return buf.toString();
}

Example 5 with Destination

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

the class SAMv1Handler method execNamingMessage.

/* Parse and execute a NAMING message */
protected boolean execNamingMessage(String opcode, Properties props) {
    if (opcode.equals("LOOKUP")) {
        String name = props.getProperty("NAME");
        if (name == null) {
            if (_log.shouldLog(Log.DEBUG))
                _log.debug("Name to resolve not specified in NAMING message");
            return writeString("NAMING REPLY RESULT=KEY_NOT_FOUND NAME=\"\" MESSAGE=\"Must specify NAME\"\n");
        }
        Destination dest = null;
        if (name.equals("ME")) {
            if (rawSession != null) {
                dest = rawSession.getDestination();
            } else if (streamSession != null) {
                dest = streamSession.getDestination();
            } else if (datagramSession != null) {
                dest = datagramSession.getDestination();
            } else {
                if (_log.shouldLog(Log.DEBUG))
                    _log.debug("Lookup for SESSION destination, but session is null");
                return false;
            }
        } else {
            try {
                dest = SAMUtils.getDest(name);
            } catch (DataFormatException e) {
            }
        }
        if (dest == null) {
            return writeString("NAMING REPLY RESULT=KEY_NOT_FOUND NAME=" + name + "\n");
        }
        return writeString("NAMING REPLY RESULT=OK NAME=" + name + " VALUE=" + dest.toBase64() + "\n");
    } else {
        if (_log.shouldLog(Log.DEBUG))
            _log.debug("Unrecognized NAMING message opcode: \"" + opcode + "\"");
        return false;
    }
}