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

Example 46 with DataFormatException

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

the class CreateRouterInfoJob method createRouterInfo.

/**
 *  Writes 6 files: router.info (standard RI format),
 *  router.keys.dat, and 4 individual key files under keyBackup/
 *
 *  router.keys.dat file format: This is the
 *  same "eepPriv.dat" format used by the client code,
 *  as documented in PrivateKeyFile.
 *
 *  Old router.keys file format: Note that this is NOT the
 *  same "eepPriv.dat" format used by the client code.
 *<pre>
 *   - Private key (256 bytes)
 *   - Signing Private key (20 bytes)
 *   - Public key (256 bytes)
 *   - Signing Public key (128 bytes)
 *  Total 660 bytes
 *</pre>
 *
 *  Caller must hold Router.routerInfoFileLock.
 */
RouterInfo createRouterInfo() {
    SigType type = getSigTypeConfig(getContext());
    RouterInfo info = new RouterInfo();
    OutputStream fos1 = null;
    try {
        info.setAddresses(getContext().commSystem().createAddresses());
        // not necessary, in constructor
        // info.setPeers(new HashSet());
        info.setPublished(getCurrentPublishDate(getContext()));
        Object[] keypair = getContext().keyGenerator().generatePKIKeypair();
        PublicKey pubkey = (PublicKey) keypair[0];
        PrivateKey privkey = (PrivateKey) keypair[1];
        SimpleDataStructure[] signingKeypair = getContext().keyGenerator().generateSigningKeys(type);
        SigningPublicKey signingPubKey = (SigningPublicKey) signingKeypair[0];
        SigningPrivateKey signingPrivKey = (SigningPrivateKey) signingKeypair[1];
        RouterIdentity ident = new RouterIdentity();
        Certificate cert = createCertificate(getContext(), signingPubKey);
        ident.setCertificate(cert);
        ident.setPublicKey(pubkey);
        ident.setSigningPublicKey(signingPubKey);
        byte[] padding;
        int padLen = SigningPublicKey.KEYSIZE_BYTES - signingPubKey.length();
        if (padLen > 0) {
            padding = new byte[padLen];
            getContext().random().nextBytes(padding);
            ident.setPadding(padding);
        } else {
            padding = null;
        }
        info.setIdentity(ident);
        Properties stats = getContext().statPublisher().publishStatistics(ident.getHash());
        info.setOptions(stats);
        info.sign(signingPrivKey);
        if (!info.isValid())
            throw new DataFormatException("RouterInfo we just built is invalid: " + info);
        // remove router.keys
        (new File(getContext().getRouterDir(), KEYS_FILENAME)).delete();
        // write router.info
        File ifile = new File(getContext().getRouterDir(), INFO_FILENAME);
        fos1 = new BufferedOutputStream(new SecureFileOutputStream(ifile));
        info.writeBytes(fos1);
        // write router.keys.dat
        File kfile = new File(getContext().getRouterDir(), KEYS2_FILENAME);
        PrivateKeyFile pkf = new PrivateKeyFile(kfile, pubkey, signingPubKey, cert, privkey, signingPrivKey, padding);
        pkf.write();
        // set or overwrite old random keys
        Map<String, String> map = new HashMap<String, String>(2);
        byte[] rk = new byte[32];
        getContext().random().nextBytes(rk);
        map.put(Router.PROP_IB_RANDOM_KEY, Base64.encode(rk));
        getContext().random().nextBytes(rk);
        map.put(Router.PROP_OB_RANDOM_KEY, Base64.encode(rk));
        getContext().router().saveConfig(map, null);
        getContext().keyManager().setKeys(pubkey, privkey, signingPubKey, signingPrivKey);
        if (_log.shouldLog(Log.INFO))
            _log.info("Router info created and stored at " + ifile.getAbsolutePath() + " with private keys stored at " + kfile.getAbsolutePath() + " [" + info + "]");
        getContext().router().eventLog().addEvent(EventLog.REKEYED, ident.calculateHash().toBase64());
    } catch (GeneralSecurityException gse) {
        _log.log(Log.CRIT, "Error building the new router information", gse);
    } catch (DataFormatException dfe) {
        _log.log(Log.CRIT, "Error building the new router information", dfe);
    } catch (IOException ioe) {
        _log.log(Log.CRIT, "Error writing out the new router information", ioe);
    } finally {
        if (fos1 != null)
            try {
                fos1.close();
            } catch (IOException ioe) {
            }
    }
    return info;
}

Example 47 with DataFormatException

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

the class LoadRouterInfoJob method loadRouterInfo.

/**
 *  Loads router.info and either router.keys.dat or router.keys.
 *
 *  See CreateRouterInfoJob for file formats
 */
private void loadRouterInfo() {
    RouterInfo info = null;
    File rif = new File(getContext().getRouterDir(), CreateRouterInfoJob.INFO_FILENAME);
    boolean infoExists = rif.exists();
    File rkf = new File(getContext().getRouterDir(), CreateRouterInfoJob.KEYS_FILENAME);
    boolean keysExist = rkf.exists();
    File rkf2 = new File(getContext().getRouterDir(), CreateRouterInfoJob.KEYS2_FILENAME);
    boolean keys2Exist = rkf2.exists();
    InputStream fis1 = null;
    try {
        // so pretend the RI isn't there if there is no keyfile
        if (infoExists && (keys2Exist || keysExist)) {
            fis1 = new BufferedInputStream(new FileInputStream(rif));
            info = new RouterInfo();
            info.readBytes(fis1);
            // Catch this here before it all gets worse
            if (!info.isValid())
                throw new DataFormatException("Our RouterInfo has a bad signature");
            if (_log.shouldLog(Log.DEBUG))
                _log.debug("Reading in routerInfo from " + rif.getAbsolutePath() + " and it has " + info.getAddresses().size() + " addresses");
            // don't reuse if family name changed
            if (DataHelper.eq(info.getOption(FamilyKeyCrypto.OPT_NAME), getContext().getProperty(FamilyKeyCrypto.PROP_FAMILY_NAME))) {
                _us = info;
            } else {
                _log.logAlways(Log.WARN, "NetDb family name changed");
            }
        }
        if (keys2Exist || keysExist) {
            KeyData kd = readKeyData(rkf, rkf2);
            PublicKey pubkey = kd.routerIdentity.getPublicKey();
            SigningPublicKey signingPubKey = kd.routerIdentity.getSigningPublicKey();
            PrivateKey privkey = kd.privateKey;
            SigningPrivateKey signingPrivKey = kd.signingPrivateKey;
            SigType stype = signingPubKey.getType();
            // check if the sigtype config changed
            SigType cstype = CreateRouterInfoJob.getSigTypeConfig(getContext());
            boolean sigTypeChanged = stype != cstype;
            if (sigTypeChanged && getContext().getProperty(CreateRouterInfoJob.PROP_ROUTER_SIGTYPE) == null) {
                // TODO reduce to ~3 (i.e. increase probability) in future release
                if (getContext().random().nextInt(4) > 0) {
                    sigTypeChanged = false;
                    if (_log.shouldWarn())
                        _log.warn("Deferring RI rekey from " + stype + " to " + cstype);
                }
            }
            if (sigTypeChanged || shouldRebuild(privkey)) {
                if (_us != null) {
                    Hash h = _us.getIdentity().getHash();
                    _log.logAlways(Log.WARN, "Deleting old router identity " + h.toBase64());
                    // the netdb hasn't started yet, but we want to delete the RI
                    File f = PersistentDataStore.getRouterInfoFile(getContext(), h);
                    f.delete();
                    // the banlist can be called at any time
                    getContext().banlist().banlistRouterForever(h, "Our previous identity");
                    _us = null;
                }
                if (sigTypeChanged)
                    _log.logAlways(Log.WARN, "Rebuilding RouterInfo with new signature type " + cstype);
                // windows... close before deleting
                if (fis1 != null) {
                    try {
                        fis1.close();
                    } catch (IOException ioe) {
                    }
                    fis1 = null;
                }
                rif.delete();
                rkf.delete();
                rkf2.delete();
                return;
            }
            getContext().keyManager().setKeys(pubkey, privkey, signingPubKey, signingPrivKey);
        }
    } catch (IOException ioe) {
        _log.log(Log.CRIT, "Error reading the router info from " + rif.getAbsolutePath() + " and the keys from " + rkf.getAbsolutePath(), ioe);
        _us = null;
        // windows... close before deleting
        if (fis1 != null) {
            try {
                fis1.close();
            } catch (IOException ioe2) {
            }
            fis1 = null;
        }
        rif.delete();
        rkf.delete();
        rkf2.delete();
    } catch (DataFormatException dfe) {
        _log.log(Log.CRIT, "Corrupt router info or keys at " + rif.getAbsolutePath() + " / " + rkf.getAbsolutePath(), dfe);
        _us = null;
        // windows... close before deleting
        if (fis1 != null) {
            try {
                fis1.close();
            } catch (IOException ioe) {
            }
            fis1 = null;
        }
        rif.delete();
        rkf.delete();
        rkf2.delete();
    } finally {
        if (fis1 != null)
            try {
                fis1.close();
            } catch (IOException ioe) {
            }
    }
}

Example 48 with DataFormatException

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

the class TunnelPeerSelector method selectExplicit.

/**
 *  For debugging, also possibly for restricted routes?
 *  Needs analysis and testing
 *  @return should always be false
 */
protected List<Hash> selectExplicit(TunnelPoolSettings settings, int length) {
    String peers = null;
    Properties opts = settings.getUnknownOptions();
    if (opts != null)
        peers = opts.getProperty("explicitPeers");
    if (peers == null)
        peers = ctx.getProperty("explicitPeers");
    List<Hash> rv = new ArrayList<Hash>();
    StringTokenizer tok = new StringTokenizer(peers, ",");
    while (tok.hasMoreTokens()) {
        String peerStr = tok.nextToken();
        Hash peer = new Hash();
        try {
            peer.fromBase64(peerStr);
            if (ctx.profileOrganizer().isSelectable(peer)) {
                rv.add(peer);
            } else {
                if (log.shouldLog(Log.DEBUG))
                    log.debug("Explicit peer is not selectable: " + peerStr);
            }
        } catch (DataFormatException dfe) {
            if (log.shouldLog(Log.ERROR))
                log.error("Explicit peer is improperly formatted (" + peerStr + ")", dfe);
        }
    }
    int sz = rv.size();
    Collections.shuffle(rv, ctx.random());
    while (rv.size() > length) rv.remove(0);
    if (log.shouldLog(Log.INFO)) {
        StringBuilder buf = new StringBuilder();
        if (settings.getDestinationNickname() != null)
            buf.append("peers for ").append(settings.getDestinationNickname());
        else if (settings.getDestination() != null)
            buf.append("peers for ").append(settings.getDestination().toBase64());
        else
            buf.append("peers for exploratory ");
        if (settings.isInbound())
            buf.append(" inbound");
        else
            buf.append(" outbound");
        buf.append(" peers: ").append(rv);
        buf.append(", out of ").append(sz).append(" (not including self)");
        log.info(buf.toString());
    }
    if (settings.isInbound())
        rv.add(0, ctx.routerHash());
    else
        rv.add(ctx.routerHash());
    return rv;
}

Example 49 with DataFormatException

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

the class BuildMessageProcessor method decrypt.

/**
 * Decrypt the record targetting us, encrypting all of the other records with the included
 * reply key and IV.  The original, encrypted record targetting us is removed from the request
 * message (so that the reply can be placed in that position after going through the decrypted
 * request record).
 *
 * Note that this layer-decrypts the build records in-place.
 * Do not call this more than once for a given message.
 *
 * @return the current hop's decrypted record or null on failure
 */
public BuildRequestRecord decrypt(TunnelBuildMessage msg, Hash ourHash, PrivateKey privKey) {
    BuildRequestRecord rv = null;
    int ourHop = -1;
    long beforeActualDecrypt = 0;
    long afterActualDecrypt = 0;
    byte[] ourHashData = ourHash.getData();
    long beforeLoop = System.currentTimeMillis();
    for (int i = 0; i < msg.getRecordCount(); i++) {
        EncryptedBuildRecord rec = msg.getRecord(i);
        int len = BuildRequestRecord.PEER_SIZE;
        boolean eq = DataHelper.eq(ourHashData, 0, rec.getData(), 0, len);
        if (eq) {
            beforeActualDecrypt = System.currentTimeMillis();
            try {
                rv = new BuildRequestRecord(ctx, privKey, rec);
                afterActualDecrypt = System.currentTimeMillis();
                // i2pd bug
                boolean isBad = SessionKey.INVALID_KEY.equals(rv.readReplyKey());
                if (isBad) {
                    if (log.shouldLog(Log.WARN))
                        log.warn(msg.getUniqueId() + ": Bad reply key: " + rv);
                    ctx.statManager().addRateData("tunnel.buildRequestBadReplyKey", 1);
                    return null;
                }
                // The spec says to feed the 32-byte AES-256 reply key into the Bloom filter.
                // But we were using the first 32 bytes of the encrypted reply.
                // Fixed in 0.9.24
                boolean isDup = _filter.add(rv.getData(), BuildRequestRecord.OFF_REPLY_KEY, 32);
                if (isDup) {
                    if (log.shouldLog(Log.WARN))
                        log.warn(msg.getUniqueId() + ": Dup record: " + rv);
                    ctx.statManager().addRateData("tunnel.buildRequestDup", 1);
                    return null;
                }
                if (log.shouldLog(Log.DEBUG))
                    log.debug(msg.getUniqueId() + ": Matching record: " + rv);
                ourHop = i;
                // TODO should we keep looking for a second match and fail if found?
                break;
            } catch (DataFormatException dfe) {
                if (log.shouldLog(Log.WARN))
                    log.warn(msg.getUniqueId() + ": Matching record decrypt failure", dfe);
                // out there with the same first 16 bytes, go around again
                continue;
            }
        }
    }
    if (rv == null) {
        // none of the records matched, b0rk
        if (log.shouldLog(Log.WARN))
            log.warn(msg.getUniqueId() + ": No matching record");
        return null;
    }
    long beforeEncrypt = System.currentTimeMillis();
    SessionKey replyKey = rv.readReplyKey();
    byte[] iv = rv.readReplyIV();
    for (int i = 0; i < msg.getRecordCount(); i++) {
        if (i != ourHop) {
            EncryptedBuildRecord data = msg.getRecord(i);
            // if (log.shouldLog(Log.DEBUG))
            // log.debug("Encrypting record " + i + "/? with replyKey " + replyKey.toBase64() + "/" + Base64.encode(iv));
            // encrypt in-place, corrupts SDS
            byte[] bytes = data.getData();
            ctx.aes().encrypt(bytes, 0, bytes, 0, replyKey, iv, 0, EncryptedBuildRecord.LENGTH);
        }
    }
    long afterEncrypt = System.currentTimeMillis();
    msg.setRecord(ourHop, null);
    if (afterEncrypt - beforeLoop > 1000) {
        if (log.shouldLog(Log.WARN))
            log.warn("Slow decryption, total=" + (afterEncrypt - beforeLoop) + " looping=" + (beforeEncrypt - beforeLoop) + " decrypt=" + (afterActualDecrypt - beforeActualDecrypt) + " encrypt=" + (afterEncrypt - beforeEncrypt));
    }
    return rv;
}

Example 50 with DataFormatException

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

the class SSUDemo method storeMyInfo.

private static void storeMyInfo(RouterInfo info) {
    File infoDir = getInfoDir();
    if (!infoDir.exists())
        infoDir.mkdirs();
    FileOutputStream fos = null;
    File infoFile = new File(infoDir, info.getIdentity().calculateHash().toBase64());
    infoFile.deleteOnExit();
    try {
        fos = new FileOutputStream(infoFile);
        info.writeBytes(fos);
    } catch (IOException ioe) {
        ioe.printStackTrace();
    } catch (DataFormatException dfe) {
        dfe.printStackTrace();
    } finally {
        if (fos != null)
            try {
                fos.close();
            } catch (IOException ioe) {
            }
    }
    System.out.println("Our info stored at: " + infoFile.getAbsolutePath());
}