Tools by Ivan Maidanski for browsing Internet DNS information

dnslook - Utility for looking up Internet domains

Version

3.0

Release date

23-Mar-2001

Target OS

Java VM

Available download formats

• Source: dnslook.java (ivmai.util & ivmai.dns packages are required)
• Java executable: dnslook.jar (requires Java VM; to run it type: java -jar dnslook.jar)
• Windows executable: dnslook.exe

Description

This utility allows the user to look up Internet DNS records and entire domains of a given name from the specified server. Every such record consists of its name, the class (IN), time-to-live value, its type (mostly A, NS, MX, CNAME, PTR or SOA), and its value according to its type. Refer to RFC1035 document for more information on DNS. Here, if parameter is omitted then the default server is used. If an optional name is specified then the looked up records are all saved to it in the standard DNS zone file format, which is either plain (the fields of the records are tab-separated) if -p option is set or blank-padded (with the records sorted ascending and duplicated records removed). By default, all the records of a given name are looked up, but setting of -n option causes the utility to look up only name server records. To look up an entire domain (zone) -z option must be set (but, this operation succeeds only if zone transferring is allowed by the server). If -n option is set in addition to -z option then all of the authoritative name servers for a given domain are sequentially tried to look up the entire domain from until it succeeds.

dnszcon - Internet DNS zones multi-threaded retriever

Version

3.0

Release date

30-Jul-2001

Target OS

Java VM

Available download formats

• Source: dnszcon.java (ivmai.util, ivmai.dns & ivmai.storage packages are required)
• Java executable: dnszcon.jar (requires Java VM; to run it type: java -jar dnszcon.jar)

Description

This tool allows the user to fetch (retrieve) Internet DNS records and entire DNS zones of a given name from their authoritative name servers. The tool is an interactive console program which processes user retrieval queries asynchronously in the background (up to 30 queries to different name servers at a time). All retrieved records are immediately put into the built-in sorted storage, which may be listed by user at run-time, and which is saved to the specified file (in a textual tab-separated format) on exit. An entire zone retrieving (zone transferring) is possible only if it is allowed at least by one of its authoritative name servers. Subzones for the zone being transferred are retrieved only in the recursive mode.

dnsx - Internet DNS zones explorer

Version

3.0

Release date

14-Jan-2001

Target OS

Java VM

Available download formats

• Source: dnsx.java (ivmai.dns & borland.jbcl packages are required)

Comment

It's an experimental version (with graphical user interface)!

'ivmai.util' Java package

ivmai.util (v2.0) is a Java package which extends the standard java.util package functionality.

Java source files:

• ActivityCore.java - Class for active observable entities;
• BooleanVector.java - Class for 'boolean' array wrappers;
• ByteVector.java - Class for 'byte' array wrappers;
• CharVector.java - Class for 'char' array wrappers;
• ConstPair.java - Class for immutable pairs of objects;
• ConstVector.java - Class for immutable vectors for objects;
• DoubleVector.java - Class for 'double' array wrappers;
• FloatVector.java - Class for 'float' array wrappers;
• GComparator.java - Class for 'greater-than' comparators;
• Immutable.java - Tagging interface for immutable objects;
• Indexable.java - Read-only interface for indexed containers;
• IntVector.java - Class for 'int' array wrappers;
• JavaConsts.java - Class defining Java-specific constants;
• Lockable.java - Interface for objects synchronized on lock;
• LongVector.java - Class for 'long' array wrappers;
• Metricable.java - Interface for integer metrics adapters;
• MultiObservable.java - Interface for observable objects;
• Notifiable.java - Interface for custom observer agents;
• ObjectVector.java - Class for object array wrappers;
• ObservedCore.java - Root class for observable objects;
• ParserException.java - Class for custom parser exceptions;
• PseudoRandom.java - Class for pseudo-random generator;
• ReallyCloneable.java - Interface for cloneable objects;
• SafeRunnable.java - Interface for safely runnable objects;
• ShortVector.java - Class for 'short' array wrappers;
• Sortable.java - Interface for comparable/orderable objects;
• StrComparator.java - Class for string comparators/metrics;
• ToString.java - Class for 'object-to-string' converters;
• TrimToSizeable.java - Interface for object 'trim-to-size';
• UnsignedInt.java - Class for unsigned integer wrappers;
• UnsignedLong.java - Class for unsigned 'long' wrappers;
• Verifiable.java - Interface for object self-integrity check.

Note: Use JDK javadoc to produce HTML documentation for this package.

'ivmai.dns' Java package

ivmai.dns (v3.0) is a Java package designed to implement DNS protocol basics (according to IETF RFC1034 and RFC1035 documents).

Java source files:

• DNSName.java - Class for representing DNS resource name (as defined in RFC1035);
• DNSRecord.java - Class for representing DNS resource record (as defined in RFC1035);
• DNSRecAltCmp.java - Class for DNS record comparator/metrics (alternative);
• DNSMsgHeader.java - Class for representing DNS msg header (as defined in RFC1035);
• DNSConnection.java - Class for DNS TCP connection (client/server-side).

'ivmai.storage' Java package

ivmai.storage (v2.0) is a Java package which offers a group of observable indexed object containers (hashed, sorted, list-like and tree-like) with the same single interface.

Java source files:

• FilterStorage.java - Abstract class for filter storage (virtual storage);
• HashedStorage.java - Class for storage of hashed elements;
• IntStorage.java - Abstract class for storage of integers (optimized);
• ListStorage.java - Class for list storage;
• ObjectStorage.java - Class for simple array-like storage;
• SortedStorage.java - Class for ascending-sorted storage;
• Storage.java - Root abstract class for storage of objects;
• StorageEnumerator.java - Storage elements enumerator (observable location wrapper);
• StorageEvent.java - Class for storage updation events (addition, modification and removal);
• TreeStorage.java - Class for tree storage.