コード例 #1
0
  /**
   * Builds a new Record from its textual representation
   *
   * @param name The owner name of the record.
   * @param type The record's type.
   * @param dclass The record's class.
   * @param ttl The record's time to live.
   * @param st A tokenizer containing the textual representation of the rdata.
   * @param origin The default origin to be appended to relative domain names.
   * @return The new record
   * @throws IOException The text format was invalid.
   */
  public static Record fromString(
      Name name, int type, int dclass, long ttl, Tokenizer st, Name origin) throws IOException {
    Record rec;

    if (!name.isAbsolute()) throw new RelativeNameException(name);
    Type.check(type);
    DClass.check(dclass);
    TTL.check(ttl);

    Tokenizer.Token t = st.get();
    if (t.type == Tokenizer.IDENTIFIER && t.value.equals("\\#")) {
      int length = st.getUInt16();
      byte[] data = st.getHex();
      if (data == null) {
        data = new byte[0];
      }
      if (length != data.length)
        throw st.exception("invalid unknown RR encoding: " + "length mismatch");
      DNSInput in = new DNSInput(data);
      return newRecord(name, type, dclass, ttl, length, in);
    }
    st.unget();
    rec = getEmptyRecord(name, type, dclass, ttl, true);
    rec.rdataFromString(st, origin);
    t = st.get();
    if (t.type != Tokenizer.EOL && t.type != Tokenizer.EOF) {
      throw st.exception("unexpected tokens at end of record");
    }
    return rec;
  }
コード例 #2
0
ファイル: SIGBase.java プロジェクト: lemmy/dnsjava
 /** Converts the RRSIG/SIG Record to a String */
 public String rdataToString() {
   StringBuffer sb = new StringBuffer();
   if (signature != null) {
     sb.append(Type.string(covered));
     sb.append(" ");
     sb.append(alg);
     sb.append(" ");
     sb.append(labels);
     sb.append(" ");
     sb.append(origttl);
     sb.append(" ");
     if (Options.check("multiline")) sb.append("(\n\t");
     sb.append(FormattedTime.format(expire));
     sb.append(" ");
     sb.append(FormattedTime.format(timeSigned));
     sb.append(" ");
     sb.append(footprint);
     sb.append(" ");
     sb.append(signer);
     if (Options.check("multiline")) {
       sb.append("\n");
       sb.append(base64.formatString(signature, 64, "\t", true));
     } else {
       sb.append(" ");
       sb.append(base64.toString(signature));
     }
   }
   return sb.toString();
 }
コード例 #3
0
ファイル: Master.java プロジェクト: lemmy/dnsjava
  private Record parseRR(MyStringTokenizer st, boolean useLast, Record last, Name origin)
      throws IOException {
    Name name;
    int ttl;
    short type, dclass;

    if (!useLast) name = new Name(st.nextToken(), origin);
    else name = last.getName();

    String s = st.nextToken();

    try {
      ttl = TTL.parseTTL(s);
      s = st.nextToken();
    } catch (NumberFormatException e) {
      if (!useLast || last == null) ttl = defaultTTL;
      else ttl = last.getTTL();
    }

    if ((dclass = DClass.value(s)) > 0) s = st.nextToken();
    else dclass = DClass.IN;

    if ((type = Type.value(s)) < 0) throw new IOException("Parse error");

    return Record.fromString(name, type, dclass, ttl, st, origin);
  }
コード例 #4
0
ファイル: SIGBase.java プロジェクト: lemmy/dnsjava
 public SIGBase(
     Name name,
     int type,
     int dclass,
     long ttl,
     int covered,
     int alg,
     long origttl,
     Date expire,
     Date timeSigned,
     int footprint,
     Name signer,
     byte[] signature) {
   super(name, type, dclass, ttl);
   Type.check(covered);
   checkU8("alg", alg);
   checkU8("labels", labels);
   TTL.check(origttl);
   checkU16("footprint", footprint);
   this.covered = covered;
   this.alg = alg;
   this.labels = name.labels();
   this.origttl = origttl;
   this.expire = expire;
   this.timeSigned = timeSigned;
   this.footprint = footprint;
   if (!signer.isAbsolute()) throw new RelativeNameException(signer);
   this.signer = signer;
   this.signature = signature;
 }
コード例 #5
0
  /**
   * Creates a new empty record, with the given parameters.
   *
   * @param name The owner name of the record.
   * @param type The record's type.
   * @param dclass The record's class.
   * @param ttl The record's time to live.
   * @return An object of a subclass of Record
   */
  public static Record newRecord(Name name, int type, int dclass, long ttl) {
    if (!name.isAbsolute()) throw new RelativeNameException(name);
    Type.check(type);
    DClass.check(dclass);
    TTL.check(ttl);

    return getEmptyRecord(name, type, dclass, ttl, false);
  }
コード例 #6
0
ファイル: Cache.java プロジェクト: lemmy/dnsjava
 public String toString() {
   StringBuffer sb = new StringBuffer();
   if (type == 0) sb.append("NXDOMAIN " + name);
   else sb.append("NXRRSET " + name + " " + Type.string(type));
   sb.append(" cl = ");
   sb.append(credibility);
   return sb.toString();
 }
コード例 #7
0
ファイル: Generator.java プロジェクト: duanlang1006/appstore
 /**
  * Indicates whether generation is supported for this type.
  *
  * @throws InvalidTypeException The type is out of range.
  */
 public static boolean supportedType(int type) {
   Type.check(type);
   return (type == Type.PTR
       || type == Type.CNAME
       || type == Type.DNAME
       || type == Type.A
       || type == Type.AAAA
       || type == Type.NS);
 }
コード例 #8
0
 Record(Name name, int type, int dclass, long ttl) {
   if (!name.isAbsolute()) throw new RelativeNameException(name);
   Type.check(type);
   DClass.check(dclass);
   TTL.check(ttl);
   this.name = name;
   this.type = type;
   this.dclass = dclass;
   this.ttl = ttl;
 }
コード例 #9
0
ファイル: Generator.java プロジェクト: duanlang1006/appstore
 /**
  * Converts the generate specification to a string containing the corresponding $GENERATE
  * statement.
  */
 public String toString() {
   StringBuffer sb = new StringBuffer();
   sb.append("$GENERATE ");
   sb.append(start + "-" + end);
   if (step > 1) sb.append("/" + step);
   sb.append(" ");
   sb.append(namePattern + " ");
   sb.append(ttl + " ");
   if (dclass != DClass.IN || !Options.check("noPrintIN")) sb.append(DClass.string(dclass) + " ");
   sb.append(Type.string(type) + " ");
   sb.append(rdataPattern + " ");
   return sb.toString();
 }
コード例 #10
0
ファイル: SIGRecord.java プロジェクト: lemmy/dnsjava
 Record rdataFromString(Name name, short dclass, int ttl, MyStringTokenizer st, Name origin)
     throws TextParseException {
   SIGRecord rec = new SIGRecord(name, dclass, ttl);
   rec.covered = Type.value(st.nextToken());
   rec.alg = Byte.parseByte(st.nextToken());
   rec.labels = Byte.parseByte(st.nextToken());
   rec.origttl = TTL.parseTTL(st.nextToken());
   rec.expire = parseDate(st.nextToken());
   rec.timeSigned = parseDate(st.nextToken());
   rec.footprint = (short) Integer.parseInt(st.nextToken());
   rec.signer = Name.fromString(st.nextToken(), origin);
   if (st.hasMoreTokens()) rec.signature = base64.fromString(st.remainingTokens());
   return rec;
 }
コード例 #11
0
  /**
   * Creates a new record, with the given parameters.
   *
   * @param name The owner name of the record.
   * @param type The record's type.
   * @param dclass The record's class.
   * @param ttl The record's time to live.
   * @param length The length of the record's data.
   * @param data The rdata of the record, in uncompressed DNS wire format. Only the first length
   *     bytes are used.
   */
  public static Record newRecord(
      Name name, int type, int dclass, long ttl, int length, byte[] data) {
    if (!name.isAbsolute()) throw new RelativeNameException(name);
    Type.check(type);
    DClass.check(dclass);
    TTL.check(ttl);

    DNSInput in;
    if (data != null) in = new DNSInput(data);
    else in = null;
    try {
      return newRecord(name, type, dclass, ttl, length, in);
    } catch (IOException e) {
      return null;
    }
  }
コード例 #12
0
ファイル: Message.java プロジェクト: lemmy/dnsjava
  /**
   * Converts the given section of the Message to a String.
   *
   * @see Section
   */
  public String sectionToString(int i) {
    if (i > 3) return null;

    StringBuffer sb = new StringBuffer();

    Record[] records = getSectionArray(i);
    for (int j = 0; j < records.length; j++) {
      Record rec = records[j];
      if (i == Section.QUESTION) {
        sb.append(";;\t" + rec.name);
        sb.append(", type = " + Type.string(rec.type));
        sb.append(", class = " + DClass.string(rec.dclass));
      } else sb.append(rec);
      sb.append("\n");
    }
    return sb.toString();
  }
コード例 #13
0
ファイル: Cache.java プロジェクト: lemmy/dnsjava
 /**
  * Adds a record to the Cache.
  *
  * @param r The record to be added
  * @param cred The credibility of the record
  * @param o The source of the record (this could be a Message, for example)
  * @see Record
  */
 public void addRecord(Record r, byte cred, Object o) {
   Name name = r.getName();
   short type = r.getRRsetType();
   if (!Type.isRR(type)) return;
   boolean addrrset = false;
   Element element = (Element) findExactSet(name, type);
   if (element == null || cred > element.credibility) {
     RRset rrset = new RRset();
     rrset.addRR(r);
     addRRset(rrset, cred);
   } else if (cred == element.credibility) {
     if (element instanceof PositiveElement) {
       PositiveElement pe = (PositiveElement) element;
       pe.rrset.addRR(r);
     }
   }
 }
コード例 #14
0
ファイル: SIGBase.java プロジェクト: lemmy/dnsjava
 protected static Record rdataFromString(SIGBase rec, Tokenizer st, Name origin)
     throws IOException {
   String typeString = st.getString();
   int covered = Type.value(typeString);
   if (covered < 0) throw st.exception("Invalid type: " + typeString);
   rec.covered = covered;
   String algString = st.getString();
   int alg = DNSSEC.Algorithm.value(algString);
   if (alg < 0) throw st.exception("Invalid algorithm: " + algString);
   rec.alg = alg;
   rec.labels = st.getUInt8();
   rec.origttl = st.getTTL();
   rec.expire = FormattedTime.parse(st.getString());
   rec.timeSigned = FormattedTime.parse(st.getString());
   rec.footprint = st.getUInt16();
   rec.signer = st.getName(origin);
   rec.signature = st.getBase64();
   return rec;
 }
コード例 #15
0
  private static final Record getTypedObject(int type) {
    if (type < 0 || type > knownRecords.length) return unknownRecord.getObject();
    if (knownRecords[type] != null) return knownRecords[type];

    /* Construct the class name by putting the type before "Record". */
    String s =
        Record.class.getPackage().getName() + "." + Type.string(type).replace('-', '_') + "Record";
    try {
      Class c = Class.forName(s);
      Constructor m = c.getDeclaredConstructor(emptyClassArray);
      knownRecords[type] = (Record) m.newInstance(emptyObjectArray);
    } catch (ClassNotFoundException e) {
      /* This is normal; do nothing */
    } catch (Exception e) {
      if (Options.check("verbose")) System.err.println(e);
    }
    if (knownRecords[type] == null) knownRecords[type] = unknownRecord.getObject();
    return knownRecords[type];
  }
コード例 #16
0
 /** Converts a Record into a String representation */
 public String toString() {
   StringBuffer sb = new StringBuffer();
   sb.append(name);
   if (sb.length() < 8) sb.append("\t");
   if (sb.length() < 16) sb.append("\t");
   sb.append("\t");
   if (Options.check("BINDTTL")) sb.append(TTL.format(ttl));
   else sb.append(ttl);
   sb.append("\t");
   if (dclass != DClass.IN || !Options.check("noPrintIN")) {
     sb.append(DClass.string(dclass));
     sb.append("\t");
   }
   sb.append(Type.string(type));
   String rdata = rrToString();
   if (!rdata.equals("")) {
     sb.append("\t");
     sb.append(rdata);
   }
   return sb.toString();
 }
コード例 #17
0
ファイル: SIGRecord.java プロジェクト: lemmy/dnsjava
 /** Converts rdata to a String */
 public String rdataToString() {
   StringBuffer sb = new StringBuffer();
   if (signature != null) {
     sb.append(Type.string(covered));
     sb.append(" ");
     sb.append(alg);
     sb.append(" ");
     sb.append(labels);
     sb.append(" ");
     sb.append(origttl);
     sb.append(" (\n\t");
     sb.append(formatDate(expire));
     sb.append(" ");
     sb.append(formatDate(timeSigned));
     sb.append(" ");
     sb.append((int) footprint & 0xFFFF);
     sb.append(" ");
     sb.append(signer);
     sb.append("\n");
     sb.append(base64.formatString(signature, 64, "\t", true));
   }
   return sb.toString();
 }
コード例 #18
0
ファイル: Type.java プロジェクト: sebastianscatularo/javadns
 public void check(int val) {
   Type.check(val);
 }
コード例 #19
0
ファイル: Cache.java プロジェクト: lemmy/dnsjava
 private void logLookup(Name name, short type, String msg) {
   System.err.println("lookupRecords(" + name + " " + Type.string(type) + "): " + msg);
 }
コード例 #20
0
ファイル: Cache.java プロジェクト: lemmy/dnsjava
  /**
   * Looks up Records in the Cache. This follows CNAMEs and handles negatively cached data.
   *
   * @param name The name to look up
   * @param type The type to look up
   * @param minCred The minimum acceptable credibility
   * @return A SetResponse object
   * @see SetResponse
   * @see Credibility
   */
  public SetResponse lookupRecords(Name name, short type, byte minCred) {
    SetResponse cr = null;
    boolean verbose = Options.check("verbosecache");
    Object o = lookup(name, type);

    if (verbose) logLookup(name, type, "Starting");

    if (o == null || o == NXRRSET) {
      /*
       * The name exists, but the type was not found.  Or, the
       * name does not exist and no parent does either.  Punt.
       */
      if (verbose) logLookup(name, type, "no information found");
      return SetResponse.ofType(SetResponse.UNKNOWN);
    }

    Object[] objects;
    if (o instanceof Element) objects = new Object[] {o};
    else objects = (Object[]) o;

    int nelements = 0;
    for (int i = 0; i < objects.length; i++) {
      Element element = (Element) objects[i];
      if (element.expired()) {
        if (verbose) {
          logLookup(name, type, element.toString());
          logLookup(name, type, "expired: ignoring");
        }
        removeSet(name, type, element);
        objects[i] = null;
      } else if (element.credibility < minCred) {
        if (verbose) {
          logLookup(name, type, element.toString());
          logLookup(name, type, "not credible: ignoring");
        }
        objects[i] = null;
      } else {
        nelements++;
      }
    }
    if (nelements == 0) {
      /* We have data, but can't use it.  Punt. */
      if (verbose) logLookup(name, type, "no useful data found");
      return SetResponse.ofType(SetResponse.UNKNOWN);
    }

    /*
     * We have something at the name.  It could be the answer,
     * a CNAME, DNAME, or NS, or a negative cache entry.
     *
     * Ignore wildcards, since it's pretty unlikely that any will be
     * cached.  The occasional extra query is easily balanced by the
     * reduced number of lookups.
     */

    for (int i = 0; i < objects.length; i++) {
      if (objects[i] == null) continue;
      Element element = (Element) objects[i];
      if (verbose) logLookup(name, type, element.toString());
      RRset rrset = null;
      if (element instanceof PositiveElement) rrset = ((PositiveElement) element).rrset;

      /* Is this a negatively cached entry? */
      if (rrset == null) {
        /*
         * If this is an NXDOMAIN entry, return NXDOMAIN.
         */
        if (element.getType() == 0) {
          if (verbose) logLookup(name, type, "NXDOMAIN");
          return SetResponse.ofType(SetResponse.NXDOMAIN);
        }

        /*
         * If we're not looking for type ANY, return NXRRSET.
         * Otherwise ignore this.
         */
        if (type != Type.ANY) {
          if (verbose) logLookup(name, type, "NXRRSET");
          return SetResponse.ofType(SetResponse.NXRRSET);
        } else {
          if (verbose) logLookup(name, type, "ANY query; " + "ignoring NXRRSET");
          continue;
        }
      }

      short rtype = rrset.getType();
      Name rname = rrset.getName();
      if (name.equals(rname)) {
        if (type != Type.CNAME && type != Type.ANY && rtype == Type.CNAME) {
          if (verbose) logLookup(name, type, "cname");
          return new SetResponse(SetResponse.CNAME, rrset);
        } else if (type != Type.NS && type != Type.ANY && rtype == Type.NS) {
          if (verbose) logLookup(name, type, "exact delegation");
          return new SetResponse(SetResponse.DELEGATION, rrset);
        } else {
          if (verbose) logLookup(name, type, "exact match");
          if (cr == null) cr = new SetResponse(SetResponse.SUCCESSFUL);
          cr.addRRset(rrset);
        }
      } else if (name.subdomain(rname)) {
        if (rtype == Type.DNAME) {
          if (verbose) logLookup(name, type, "dname");
          return new SetResponse(SetResponse.DNAME, rrset);
        } else if (rtype == Type.NS) {
          if (verbose) logLookup(name, type, "parent delegation");
          return new SetResponse(SetResponse.DELEGATION, rrset);
        } else {
          if (verbose)
            logLookup(name, type, "ignoring rrset (" + rname + " " + Type.string(rtype) + ")");
        }
      } else {
        if (verbose)
          logLookup(name, type, "ignoring rrset (" + rname + " " + Type.string(rtype) + ")");
      }
    }

    /*
     * As far as I can tell, the only legitimate time cr will be null is
     * if we queried for ANY and only saw negative responses, but not an
     * NXDOMAIN.  Return UNKNOWN.
     */
    if (cr == null && type == Type.ANY) return SetResponse.ofType(SetResponse.UNKNOWN);
    else if (cr == null)
      throw new IllegalStateException(
          "looking up (" + name + " " + Type.string(type) + "): " + "cr == null.");
    return cr;
  }