Examples with TextParseException org.xbill.DNS.TextParseException used on opensource projects

Example 1 with TextParseException

use of org.xbill.DNS.TextParseException in project Smack by igniterealtime.

the class DNSJavaResolver method lookupSRVRecords0.

@Override
protected List<SRVRecord> lookupSRVRecords0(String name, List<HostAddress> failedAddresses, DnssecMode dnssecMode) {
    List<SRVRecord> res = new ArrayList<SRVRecord>();
    Lookup lookup;
    try {
        lookup = new Lookup(name, Type.SRV);
    } catch (TextParseException e) {
        throw new IllegalStateException(e);
    }
    Record[] recs = lookup.run();
    if (recs == null)
        return res;
    for (Record record : recs) {
        org.xbill.DNS.SRVRecord srvRecord = (org.xbill.DNS.SRVRecord) record;
        if (srvRecord != null && srvRecord.getTarget() != null) {
            String host = srvRecord.getTarget().toString();
            int port = srvRecord.getPort();
            int priority = srvRecord.getPriority();
            int weight = srvRecord.getWeight();
            List<InetAddress> hostAddresses = lookupHostAddress0(host, failedAddresses, dnssecMode);
            if (hostAddresses == null) {
                continue;
            }
            SRVRecord r = new SRVRecord(host, port, priority, weight, hostAddresses);
            res.add(r);
        }
    }
    return res;
}

Example 2 with TextParseException

use of org.xbill.DNS.TextParseException in project GNS by MobilityFirst.

the class NameResolution method getARecordsFromAField.

/**
   * retrieve all A records from A field of a JSON object
   * 
   * @return
   */
private static JSONArray getARecordsFromAField(JSONObject fieldResponseJson, String nameToResolve) {
    JSONArray aList = new JSONArray();
    /**
       * Format of A record in GNS:
       * {
       * 	"A":
       * 		{
       * 			"record": String[ip1, ip2, ...],
       * 			"ttl": int
       * 		}
       * }
       */
    if (fieldResponseJson.has("A")) {
        JSONArray records = null;
        int ttl = 60;
        try {
            JSONObject recordObj = fieldResponseJson.getJSONObject("A");
            records = recordObj.getJSONArray(ManagedDNSServiceProxy.RECORD_FIELD);
            ttl = recordObj.getInt(ManagedDNSServiceProxy.TTL_FIELD);
        } catch (JSONException e) {
            // something is wrong with the JSON object, return null
            e.printStackTrace();
            return null;
        }
        // The records may contain multiple ip addresses
        for (int i = 0; i < records.length(); i++) {
            try {
                String ip = records.getString(i);
                ARecord gnsARecord = new ARecord(new Name(nameToResolve), DClass.IN, ttl, InetAddress.getByName(ip));
                aList.put(gnsARecord);
            } catch (JSONException | TextParseException | UnknownHostException e) {
                // do nothing, just trash this record
                e.printStackTrace();
            }
        }
    } else {
        // there is no A record in the original GNS record, so return null
        return null;
    }
    return aList;
}

Example 3 with TextParseException

use of org.xbill.DNS.TextParseException in project GNS by MobilityFirst.

the class NameResolution method getMXRecordsFromMXField.

/**
   * retrieve MX record from MX field of a JSON object
   * the key "MX" contains a list of all MX records
   * the key "A" contains a list of all A records, which must be put into ADDITIONAL section
   * 
   * @return
   */
private static JSONObject getMXRecordsFromMXField(JSONObject fieldResponseJson, String nameToResolve) {
    JSONObject obj = new JSONObject();
    JSONArray mxList = new JSONArray();
    JSONArray aList = new JSONArray();
    if (fieldResponseJson.has("MX")) {
        JSONArray records = null;
        int ttl = 3600;
        try {
            JSONObject mxname = fieldResponseJson.getJSONObject("MX");
            records = mxname.getJSONArray(ManagedDNSServiceProxy.RECORD_FIELD);
            ttl = mxname.getInt(ManagedDNSServiceProxy.TTL_FIELD);
        } catch (JSONException e) {
            // something is wrong with the JSON object, return null
            e.printStackTrace();
            return null;
        }
        NameResolution.getLogger().log(Level.FINE, "Get MX records list: {0}", records.toString());
        // The records may contain multiple NS records
        for (int i = 0; i < records.length(); i++) {
            try {
                JSONArray record = records.getJSONArray(i);
                String pString = record.getString(0);
                int priority = Integer.parseInt(pString);
                String host = record.getString(1);
                // the host must be an absolute name, i.e., ended with a dot
                if (!host.endsWith(".")) {
                    host = host + ".";
                }
                MXRecord mxRecord = new MXRecord(new Name(nameToResolve), DClass.IN, ttl, priority, new Name(host));
                mxList.put(mxRecord);
                if (record.length() == 3) {
                    String address = record.getString(2);
                    ARecord mxARecord = new ARecord(new Name(host), DClass.IN, ttl, InetAddress.getByName(address));
                    aList.put(mxARecord);
                } else {
                // no IP address in the record for the mail server
                }
            } catch (JSONException | TextParseException | UnknownHostException e) {
                // trash this record
                e.printStackTrace();
            }
        }
    }
    try {
        obj.put("MX", mxList);
        obj.put("A", aList);
    } catch (JSONException e) {
        // return a null if JSON operation fails
        return null;
    }
    return obj;
}

Example 4 with TextParseException

use of org.xbill.DNS.TextParseException in project GNS by MobilityFirst.

the class NameResolution method getNSRecordsFromNSField.

/**
   * retrieve all NS records and the corresponding A records from NS field of a JSON object.
   * the key "NS" contains a list of all NS records
   * the key "A" contains a list of all A records, which must be put into ADDITIONAL section
   * 
   */
private static JSONObject getNSRecordsFromNSField(JSONObject fieldResponseJson, String nameToResolve) {
    JSONObject obj = new JSONObject();
    JSONArray aList = new JSONArray();
    JSONArray nsList = new JSONArray();
    /**
       * Format of NS record in GNS:
       * {
       * 	"NS":
       * 		{
       * 			"record":[(ns1, addr1), (ns2, addr2), ...],
       * 			"ttl":int
       * 		}
       * }
       * 
       */
    if (fieldResponseJson.has("NS")) {
        JSONArray records = null;
        int ttl = 3600;
        try {
            JSONObject recordObj = fieldResponseJson.getJSONObject("NS");
            records = recordObj.getJSONArray(ManagedDNSServiceProxy.RECORD_FIELD);
            ttl = recordObj.getInt(ManagedDNSServiceProxy.TTL_FIELD);
        } catch (JSONException e) {
            // something is wrong with the JSON object, return null
            e.printStackTrace();
            return null;
        }
        // The records may contain multiple NS records
        for (int i = 0; i < records.length(); i++) {
            try {
                JSONArray record = records.getJSONArray(i);
                String ns = record.getString(0);
                // It must be an absolute name, i.e., the string must be ended  with a dot, e.g., example.com.
                if (!ns.endsWith(".")) {
                    ns = ns + ".";
                }
                NSRecord nsRecord = new NSRecord(new Name(nameToResolve), DClass.IN, ttl, new Name(ns));
                nsList.put(nsRecord);
                // address can be null as the domain name might use other service as its name server
                if (record.length() == 2) {
                    String address = record.getString(1);
                    ARecord nsARecord = new ARecord(new Name(ns), DClass.IN, ttl, InetAddress.getByName(address));
                    aList.put(nsARecord);
                } else {
                // no IP address in the record for the name server
                }
            } catch (JSONException | TextParseException | UnknownHostException e) {
                // do nothing and trash this record
                e.printStackTrace();
            }
        }
    } else {
    // No NS record, return null
    }
    try {
        obj.put("NS", nsList);
        obj.put("A", aList);
    } catch (JSONException e) {
        // return a null if JSON operation fails
        return null;
    }
    return obj;
}

Example 5 with TextParseException

use of org.xbill.DNS.TextParseException in project ORCID-Source by ORCID.

the class OrcidDomainValidator method isValid.

public boolean isValid(String hostLocation) {
    try {
        Lookup lookup = new Lookup(hostLocation);
        lookup.run();
        int result = lookup.getResult();
        if (Lookup.SUCCESSFUL == result) {
            return true;
        }
        if (Lookup.HOST_NOT_FOUND == result || Lookup.TYPE_NOT_FOUND == result) {
            return false;
        }
        LOGGER.warn("DNS is not OK, so validating in offline mode");
        return standardDomainValidator.isValid(hostLocation);
    } catch (TextParseException e) {
        return false;
    }
}