/* * This file is part of rasdaman community. * * Rasdaman community is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * Rasdaman community is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with rasdaman community. If not, see . * * Copyright 2003, 2004, 2005, 2006, 2007, 2008, 2009 Peter Baumann / rasdaman GmbH. * * For more information please see * or contact Peter Baumann via . */ /** *********************************************************** *
 *
 * PURPOSE: ODMG Implementation Bootstrap Object
 *
 *
 * COMMENTS:
 *
 * 
*********************************************************** */ package rasj.odmg; import rasj.*; import rasj.global.*; import rasj.clientcommhttp.*; import org.odmg.*; import java.io.*; import java.net.*; import java.lang.*; import java.util.*; /** * This class implements the internal ODMG Bootstrap Object used by the rasj.odmg package. * Because it contains a lot of functionality for internal purposes (e.g. methods for * the RasManager), this class is not the official Implementation object the user works * with, it is only used by the rasj.odmg package. *

* The public Implementation object is the class * {@link rasj.RasImplementation rasj.RasImplementation}, which internally works with a * RasODMGImplementation object. * * @see rasj.RasImplementation */ public class RasODMGImplementation implements RasImplementationInterface,RasCommDefs//implements Implementation { private String rasServer = ""; private String rasMgr = ""; private int rasMgrPort= RasGlobalDefs.RASMGRPORT_DEFAULT; private String userIdentification = RasGlobalDefs.GUESTIDENT_DEFAULT; private String databaseName = ""; private String capability = "dummy"; private int maxRetry = RasGlobalDefs.MAX_GETFREESERVER_ATTEMPTS; /** * current state of transaction **/ private boolean isOpenTA = false; /** /** * This variable holds the current RasTransaction object. */ private RasTransaction transaction = null; /** * This variable holds the current Rasdatabase object. */ private RasDatabase database = null; /** * This variable holds the current RasOQLQuery object. */ private RasOQLQuery query = null; /** * The standard ODMG implementation sets the access mode when the database * is opened, whereas the RasDaMan server expects this information when a * transaction is started. Therefore it is saved in this variable. * * Available modes: * OPEN_READ_ONLY = 1 * OPEN_READ_WRITE = 2 * OPEN_EXCLUSIVE = 3 */ private int accessMode = 0; /** * Since ODMG does not specify a "isDatabaseOpen" method but provides a * DatabaseClosedException, this variable is set to 1 if an openDB command is * executed (closeDB sets it back to 0). */ private int dbIsOpen = 0; /** * This value is set to 1 if a transaction has been opened. Commiting or aborting * a transaction sets it back to 0. */ private int taIsOpen = 0; private int clientID = 0; /** * This value is used to store possible error messages of exceptions occuring * when opening or closing transactions. * The ODMG specification does not allow these operations to throw * any exceptions, but our implementation could produce exceptions when connecting * to the RasDaMan httpserver. In order to not get lost, these exception messages * are stored in this variable. */ private String errorStatus = ""; // later: private String strUserAndPasswd = "anonymous:anonymouspasswd"; /** * Standard constructor. * @param server Complete URL of the RasDaMan httpserver (including port number) */ public RasODMGImplementation(String server) { Debug.enterVerbose( "RasODMGImplementation.constructor: start, server=" + server + "." ); try { // server address is http://server:port, we need server and port StringTokenizer t=new StringTokenizer (server,"/"); String xxx=t.nextToken(); rasMgr =t.nextToken("/:"); String portStr = t.nextToken(":"); rasMgrPort = Integer.parseInt(portStr); } catch(NoSuchElementException e) { Debug.leaveVerbose( "RasODMGImplementation.constructor: done. server URL format error." ); throw new RasConnectionFailedException(RasGlobalDefs.URL_FORMAT_ERROR, server); } isOpenTA = false; Debug.leaveVerbose( "RasODMGImplementation.constructor: done. ok." ); } /** * Gets the name of the actual server. * @return the name of the RasDaMan server used */ public String getRasServer() { Debug.talkVerbose( "RasODMGImplementation.getRasServer: server=" + rasServer + "." ); return rasServer; } /** * Tells whether database is open. * @return open status of database */ public int dbIsOpen() { Debug.talkVerbose( "RasODMGImplementation.dbIsOpen: dbIsOpen=" + dbIsOpen + "." ); return dbIsOpen; } /** * Gets the client ID * @return ID of this client */ public int getClientID() { Debug.talkVerbose( "RasODMGImplementation.getClientID: clientID=" + clientID + "." ); return clientID; } /** * Gets the database access mode * @return accessMode code: OPEN_READ_ONLY = 1; OPEN_READ_WRITE = 2; OPEN_EXCLUSIVE = 3 */ public int getAccessMode() { Debug.talkVerbose( "RasODMGImplementation.getAccessMode: accessMode=" + accessMode + "." ); return accessMode; } /** * Gets the current error status * @return error status string */ public String getErrorStatus() { Debug.talkVerbose( "RasODMGImplementation.getErrorStatus: errorStatus=" + errorStatus + "." ); return errorStatus; } /** * Create a new transaction object and associate it with the current thread. */ public Transaction newTransaction() { Debug.enterVerbose( "RasODMGImplementation.newTransaction: start." ); transaction= new RasTransaction(this); Debug.leaveVerbose( "RasODMGImplementation.newTransaction: done." ); return transaction; } /** * Get current transaction for thread, or NULL if none. */ public Transaction currentTransaction() { Debug.talkVerbose( "RasODMGImplementation.currentTransaction." ); return transaction; } /** * Create a new database object. */ public Database newDatabase() { Debug.enterVerbose( "RasODMGImplementation.newDatabase: start." ); database = new RasDatabase(this); Debug.leaveVerbose( "RasODMGImplementation.newDatabase: done." ); return database; } /** * Create a new query object. */ public OQLQuery newOQLQuery() { Debug.enterVerbose( "RasODMGImplementation.newOQLQuery: start." ); query = new RasOQLQuery(this); Debug.leaveVerbose( "RasODMGImplementation.newOQLQuery: done." ); return query; } /** * Create a new DList object. */ public DList newDList() { Debug.talkVerbose( "RasODMGImplementation.newDList." ); return new RasList(); } /** * Create a new DBag object. */ public DBag newDBag() { return new RasBag(); } /** * Create a new DSet object. */ public DSet newDSet() { Debug.talkVerbose( "RasODMGImplementation.newDSet." ); return new RasSet(); } /** * Not implemented yet. */ public DArray newDArray() { Debug.talkWarning( "RasODMGImplementation.newDArray: not yet implemented." ); throw new NotImplementedException(); } /** * Not implemented yet. */ public DMap newDMap() { Debug.talkWarning( "RasODMGImplementation.newDMap: not yet implemented." ); throw new NotImplementedException(); } /** * Get a String representation of the object's identifier. * @returns: OID string on success, null otherwise */ public String getObjectId(Object obj) { Debug.enterVerbose( "RasODMGImplementation.getObjectId: start." ); if( ! (obj instanceof RasObject) ) // currently all must be derived from RasObject { Debug.leaveWarning( "RasODMGImplementation.getObjectId: not yet implemented." ); throw new NotImplementedException(); } // if we come here: yes, we are derived from RasObject, let's proceed RasOID roid = ((RasObject)obj).getOID(); String oid = roid.toString(); DBag resultBag = null; if(!((RasObject)obj).getOID().isValid()) // OID of our object is not valid -> get one { Debug.talkWarning( "RasODMGImplementation.getObjectId: OID not Valid: " + roid + "." ); String params = "ClientID=" + clientID + "&Command=10"; RasHttpRequest request = new RasHttpRequest(); if(((RasTransaction)this.currentTransaction()).isOpenLocally()) // TA is open, we can proceed // (decide w/o asking server -- PB 2003-jun-25) { // get new oid try { request.execute(rasServer,params); // get it from server } catch(RasQueryExecutionFailedException e) { // this cannot occur (theoretically) Debug.talkCritical( "RasODMGImplementation.getObjectId: query execution failed: " + e.getMessage() ); } } else // TA is not open, so we do an open here { Debug.talkSparse( "RasODMGImplementation.getObjectId: db not open, opening: " + databaseName + "." ); boolean openedDbHere = false; // did we open a db locally? boolean openedTaHere = false; // did we open a db locally? Database d = null; Transaction t = null; try { if(this.dbIsOpen == Database.NOT_OPEN) // we even open the db if not done already { Debug.talkSparse( "RasODMGImplementation.getObjectId: db not open, opening: " + databaseName + "." ); d = this.newDatabase(); d.open( databaseName, Database.OPEN_READ_WRITE); // fix: was: "RASBASE"; now: take name of last opened db. not good, but better maybe -- PB 2003-jun-13 // FIXME: r/w open not good, do we have info at this point? Maybe getOid needs r/w openedDbHere = true; } t = this.newTransaction(); t.begin(); openedTaHere = true; // we know now we have an open TA // get new oid request.execute(rasServer,params); // get it from server t.commit(); if(openedDbHere) { Debug.talkSparse( "RasODMGImplementation.getObjectId: closing locally opened DB. " ); d.close(); openedDbHere = false; // no more locally opened DB to close } } catch(ODMGException e) { Debug.talkCritical( "RasODMGImplementation.getObjectId: failed: " + e.getMessage() ); try { if (openedTaHere) t.abort(); if(openedDbHere) d.close(); } catch (ODMGException e3) { Debug.talkSparse( "RasODMGImplementation.getObjectId: error closing locally opened DB (ignored): " + e3.getMessage() ); } } } // if (TA open) resultBag = (DBag)request.getResult(); // if all went fine we now have OID in result if(resultBag != null) { Iterator iter = resultBag.iterator(); if(iter.hasNext()) roid = (RasOID)iter.next(); oid = roid.toString(); ((RasObject)obj).setOID(roid); } else { Debug.talkCritical( "RasODMGImplementation.getObjectId: empty query result, cannot fetch OID." ); oid = null; } } // valid OID Debug.leaveVerbose( "RasODMGImplementation.getObjectId: done. oid=" + oid + "." ); return oid; } // getObjectId() /** * Not implemented yet. */ public Database getDatabase(Object obj) { Debug.talkCritical( "RasODMGImplementation.getDatabase: not yet implemented." ); throw new NotImplementedException(); } /** * Open database */ public void openDB(String name, int accessMode) throws ODMGException, ODMGRuntimeException { Debug.enterVerbose( "RasODMGImplementation.openDB: start, db=" + name + ", accessMode=" + accessMode ); databaseName = name; this.accessMode = accessMode; try { getFreeServer(); // sets rasServer executeOpenDB(databaseName,accessMode); // executeCloseDB(); // does nothing, so clean away -- PB 2003-jun-25 dbIsOpen = 1; } catch (ODMGException e) // catch just for logging, then rethrow immediately { Debug.leaveCritical( "RasODMGImplementation.openDB: done. Exception: " + e.getMessage() ); throw new ODMGException( e.getMessage() ); } catch (ODMGRuntimeException x) // catch just for logging, then rethrow immediately { Debug.leaveCritical( "RasODMGImplementation.openDB: done. ODMGRuntimeException: " + x.getMessage() ); throw new ODMGException( x.getMessage() ); } Debug.leaveVerbose( "RasODMGImplementation.openDB: done. OK." ); } private void executeOpenDB(String name, int accessMode) throws ODMGException { Debug.enterVerbose( "RasODMGImplementation.executeOpenDB: start, name=" + name + ", accessMode=" + accessMode ); String params = "Command=" + RasODMGGlobal.commOpenDB + "&Database=" + name + "&Capability=" + capability; RasHttpRequest request = new RasHttpRequest(); request.execute(rasServer,params); // Later, the client ID is determined here clientID = 1; // not used anymore Debug.leaveVerbose( "RasODMGImplementation.executeOpenDB: done." ); } /** * Closes an open database. At the moment, only one database can be open at * a given time and thus no parameter "database" is necessary here. */ public void closeDB() throws ODMGException { Debug.enterVerbose( "RasODMGImplementation.closeDB start." ); // not necessary, others do close already // PB: this is due to an old bug in O2 which needed a closeDB in order to free objects, hence we do this in commitTA/abortTA dbIsOpen = 0; Debug.leaveVerbose( "RasODMGImplementation.closeDB done." ); } private void executeCloseDB() throws ODMGException { String params = "ClientID=" + clientID + "&Command=" + RasODMGGlobal.commCloseDB; RasHttpRequest request = new RasHttpRequest(); request.execute(rasServer,params); } /** * Begin a transaction. */ public void beginTA() { Debug.enterVerbose( "RasODMGImplementation.beginTA start." ); try { getFreeServer(); executeOpenDB(databaseName,accessMode); executeBeginTA(); } catch(ODMGException e) { Debug.talkWarning( "RasODMGImplementation.beginTA: " + e.getMessage() ); errorStatus = e.getMessage(); } Debug.leaveVerbose( "RasODMGImplementation.beginTA done." ); } private void executeBeginTA() { String errorMsg = "Could not open transaction: "; if(dbIsOpen == 0) throw new DatabaseClosedException(errorMsg + "database not open"); String params = "ClientID=" + clientID + "&Command="; // Is the database opened READ_ONLY or READ_WRITE ? if(accessMode == Database.OPEN_READ_ONLY) params = params + RasODMGGlobal.commBTreadOnly; else params = params + RasODMGGlobal.commBTreadWrite; params = params + "&Capability=" + capability; RasHttpRequest request = new RasHttpRequest(); try { request.execute(rasServer,params); } catch(RasQueryExecutionFailedException e) { // this cannot occur (theoretically) Debug.talkWarning( "RasODMGImplementation.executeBeginTA: " + e.getMessage() ); errorStatus = e.getMessage(); } } /** * Returns TRUE if a transaction is currently open. * This method MUST be sincere in that it asks the server about its state! (some apps use it to override timeout) */ public boolean isOpenTA() { Debug.enterVerbose( "RasODMGImplementation.isOpenTA start." ); boolean result = false; String params = "ClientID=" + clientID + "&Command=" + RasODMGGlobal.commIsOpenTA; RasHttpRequest request = new RasHttpRequest(); try { request.execute(rasServer,params); result= (request.getResultType() == 99) ? true : false; } catch(RasQueryExecutionFailedException e) { // this cannot occur (theoretically) Debug.talkWarning( "RasODMGImplementation.isOpenTA: " + e.getMessage() ); errorStatus = e.getMessage(); result = false; } Debug.leaveVerbose( "RasODMGImplementation.isOpenTA done. result=" + result ); return result; } /** * Commit a transaction. */ public void commitTA() { Debug.enterVerbose( "RasODMGImplementation.commitTA start." ); try { executeCommitTA(); executeCloseDB(); // FIXME: why close here??? -- PB 2003-jun-13 } catch(ODMGException e) { Debug.talkWarning( "RasODMGImplementation.commitTA: " + e.getMessage() ); errorStatus = e.getMessage(); } Debug.leaveVerbose( "RasODMGImplementation.commitTA done." ); } private void executeCommitTA() { String errorMsg = "Could not commit transaction: "; if(dbIsOpen == 0) throw new DatabaseClosedException(errorMsg + "database not open"); String params = "ClientID=" + clientID + "&Command=" + RasODMGGlobal.commCT; RasHttpRequest request = new RasHttpRequest(); try { request.execute(rasServer,params);//RasODMGGlobal.getRasServer(),params); } catch(RasQueryExecutionFailedException e) { // this cannot occur (theoretically) Debug.talkWarning( "RasODMGImplementation.executeCommitTA: " + e.getMessage() ); errorStatus = e.getMessage(); } } /** * Abort a transaction. */ public void abortTA() { Debug.enterVerbose( "RasODMGImplementation.abortTA start." ); try { executeAbortTA(); executeCloseDB(); } catch(ODMGException e) { Debug.talkWarning( "RasODMGImplementation.abortTA: " + e.getMessage() ); errorStatus = e.getMessage(); } Debug.leaveVerbose( "RasODMGImplementation.abortTA done." ); } private void executeAbortTA() { String errorMsg = "Cannot abort transaction: "; if(dbIsOpen == 0) throw new DatabaseClosedException(errorMsg + "database not open"); String params = "ClientID=" + clientID + "&Command=" + RasODMGGlobal.commAT; RasHttpRequest request = new RasHttpRequest(); try { request.execute(rasServer,params); } catch(RasQueryExecutionFailedException e) { // this cannot occur (theoretically) Debug.talkWarning( "RasODMGImplementation.executeAbortTA: " + e.getMessage() ); errorStatus = e.getMessage(); } } /** * Set the maximum retry parameter */ public void setMaxRetry(int newRetry) { Debug.talkVerbose( "RasODMGImplementation.setMaxRetry to " + newRetry + "." ); maxRetry = newRetry; } /** * Get the maximum retry parameter */ public int getMaxRetry() { Debug.talkVerbose( "RasODMGImplementation.getMaxRetry: maxRetry=" + maxRetry + "." ); return maxRetry; } /** * Requests a free server and retry's */ //private void getFreeServer( ) public void getFreeServer( ) throws RasQueryExecutionFailedException, RasConnectionFailedException { Debug.enterVerbose( "RasODMGImplementation.getFreeServer: start." ); String uniqueID = uniqueRequestID(); int millisec = RasGlobalDefs.GETFREESERVER_WAIT_INITIAL; for (int retryCount = 1; retryCount <= maxRetry; retryCount++) { try { executeGetFreeServer(uniqueID); // if no error, we have the server, so break break; } catch(RasConnectionFailedException e) { Debug.talkCritical( "RasODMGImplementation.getFreeServer: cannot obtain a free server:" + e.getMessage() ); // the following errors justify that we try again, maybe we get a free server a little later int errno = e.getErrorNo(); if (errno==RasGlobalDefs.MANAGER_BUSY /* || errno==RasGlobalDefs.NO_ACTIVE_SERVERS */ // if no such server is started, waiting won't help || errno==RasGlobalDefs.WRITE_TRANS_IN_PROGRESS) { // retry, but with increasing wait period millisec = millisec * RasGlobalDefs.GETFREESERVER_WAIT_INCREMENT; Debug.talkCritical( "RasODMGImplementation.getFreeServer: no free server available, errno=" + errno + ", retry #" + retryCount + " of " + maxRetry + " after " + millisec + " msecs." ); try { Thread.sleep(millisec); } catch(InterruptedException intex) { // wake up } } else { Debug.talkCritical( "RasODMGImplementation.getFreeServer: giving up, cannot obtain free server. marking connection as closed." ); Debug.leaveVerbose( "RasODMGImplementation.getFreeServer: done." ); // reset ta & db isOpenTA = false; dbIsOpen = 0; throw(e); // we give up, or we shouldn't retry with this kind of error } } } // for Debug.leaveVerbose( "RasODMGImplementation.getFreeServer: done." ); } /** * Requests a free server from rasmgr */ private void executeGetFreeServer( String uniqueID ) throws RasQueryExecutionFailedException, RasConnectionFailedException { Debug.enterVerbose( "RasODMGImplementation.executeGetFreeServer: enter, uniqueID=" + uniqueID ); try { Socket soclu = new Socket(rasMgr,rasMgrPort); // FIXME: where is this socket closed ??? PB Debug.talkVerbose( "RasODMGImplementation.executeGetFreeServer: socket=" + soclu ); PrintStream ps = new PrintStream(soclu.getOutputStream()); String body = databaseName + " HTTP " + (accessMode == Database.OPEN_READ_ONLY ? "ro":"rw") + " " + uniqueID + " \0"; ps.print("POST getfreeserver HTTP/1.1\r\nAccept: text/plain\r\nContent-type: text/plain\r\n" + "User-Agent: RasDaMan Java Client1.0\r\nAuthorization: ras " + userIdentification + "\r\nContent length: " + body.length()+"\r\n\r\n" + body); ps.flush(); Debug.talkVerbose( "RasODMGImplementation.executeGetFreeServer: sent body=" + body ); BufferedReader ds = new BufferedReader(new InputStreamReader(soclu.getInputStream())); int resultCode = getResultCode(ds); String bodyLine = getBodyLine(ds); Debug.talkVerbose( "RasODMGImplementation.executeGetFreeServer: received result code=" + resultCode + ", bodyLine=" + bodyLine ); ps.close(); ds.close(); soclu.close(); // this one was missing all the time -- PB Debug.talkVerbose( "RasODMGImplementation.executeGetFreeServer: socket closed: " + soclu ); if(resultCode==200) { StringTokenizer t=new StringTokenizer(bodyLine," "); String host=t.nextToken(); String port=t.nextToken(" "); capability=t.nextToken(" \t\r\n\0"); rasServer="http://" + host + ":" + port; } else { // if error =>bodyLine: errorCode someText Debug.talkSparse( "RasODMGImplementation.executeGetFreeServer: bodyLine=" + bodyLine); StringTokenizer t=new StringTokenizer(bodyLine," "); String errorStr = t.nextToken(); int errorCode = Integer.parseInt(errorStr); if( resultCode < 1000 ) { Debug.leaveVerbose( "RasODMGImplementation.executeGetFreeServer: done. connection failed, code=" + errorCode ); throw new RasConnectionFailedException(errorCode,null); } else { Debug.leaveVerbose( "RasODMGImplementation.executeGetFreeServer: done. request format error, code=" + errorCode ); throw new RasConnectionFailedException(RasGlobalDefs.REQUEST_FORMAT_ERROR," code=" + errorCode); } } } catch( MalformedURLException e ) { Debug.talkCritical( "RasODMGImplementation.executeGetFreeServer: malformed URL exception: " + e.getMessage() ); Debug.leaveVerbose( "RasODMGImplementation.executeGetFreeServer: done with exception: " + e.getMessage() ); throw new RasConnectionFailedException(RasGlobalDefs.MANAGER_CONN_FAILED,rasMgr); } catch( IOException e ) { Debug.talkCritical( "RasODMGImplementation.executeGetFreeServer: IO exception: " + e.getMessage() ); Debug.leaveVerbose( "RasODMGImplementation.executeGetFreeServer: done with exception: " + e.getMessage() ); throw new RasClientInternalException( "RasODMGImplementation","executeGetFreeServer()", e.getMessage() ); } Debug.leaveVerbose( "RasODMGImplementation.executeGetFreeServer: done." ); } // executeGetFreeServer() public Object queryRequest(String parameters) throws RasQueryExecutionFailedException { Debug.enterVerbose( "RasODMGImplementation.queryRequest start. parameters=" + parameters + "." ); BenchmarkTimer qTimer = new BenchmarkTimer("queryRequest"); qTimer.startTimer(); RasHttpRequest request= new RasHttpRequest(); request.execute(rasServer,parameters); qTimer.stopTimer(); qTimer.print(); Debug.leaveVerbose( "RasODMGImplementation.executeGetFreeServer done." ); return request.getResult(); } //private int getResultCode(BufferedReader ds) throws IOException public int getResultCode(BufferedReader ds) throws IOException { Debug.enterVerbose( "RasODMGImplementation.getResultCode start." ); String s = ds.readLine(); StringTokenizer t = new StringTokenizer(s," "); String http = t.nextToken(); String resultString = t.nextToken(" "); int result = Integer.parseInt(resultString); Debug.leaveVerbose( "RasODMGImplementation.getResultCode done. result=" + result + "." ); return result; } //private String getBodyLine(BufferedReader ds) throws IOException public String getBodyLine(BufferedReader ds) throws IOException { Debug.enterVerbose( "RasODMGImplementation.getBodyLine start." ); String s; do // was a "for(;;)" loop, cleaned it -- PB 2003-jun-13 { s = ds.readLine(); if(s==null) { Debug.talkCritical( "RasODMGImplementation.getBodyLine: Unexpected EOF in rasmgr answer." ); throw new IOException("Unexpected EOF in rasmgr answer."); } } while (s.length() != 0); String result = ds.readLine(); Debug.leaveVerbose( "RasODMGImplementation.getBodyLine done. result=" + result + "." ); return result; } public void setUserIdentification(String userName, String plainPass) { Debug.enterVerbose( "RasODMGImplementation.setUserIdentification start." ); MD5 md5 = new MD5(); String hex; md5.Init(); md5.Update(plainPass); hex = md5.asHex(); userIdentification= userName + ":" + hex; Debug.leaveVerbose( "RasODMGImplementation.setUserIdentification done." ); } private String strHostID = null; static private int idcounter = 0; private String uniqueRequestID() { Debug.enterVerbose( "RasODMGImplementation.uniqueRequestID start." ); if(strHostID == null) { long hostid = 0; try { InetAddress addr = InetAddress.getLocalHost(); // Get IP Address byte[] ipAddr = addr.getAddress(); for(int i=0;i */ class MD5 { /** * MD5 state */ MD5State state; /** * If Final() has been called, finals is set to the current finals * state. Any Update() causes this to be set to null. */ MD5State finals; /** * Padding for Final() */ static byte padding[] = { (byte) 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; /** * Initialize MD5 internal state (object can be reused just by * calling Init() after every Final() */ public synchronized void Init () { state = new MD5State(); finals = null; } /** * Class constructor */ public MD5 () { this.Init(); } /** * Initialize class, and update hash with ob.toString() * * @param ob Object, ob.toString() is used to update hash * after initialization */ public MD5 (Object ob) { this(); Update(ob.toString()); } private int rotate_left (int x, int n) { return (x << n) | (x >>> (32 - n)); } /* I wonder how many loops and hoops you'll have to go through to get unsigned add for longs in java */ private int uadd (int a, int b) { long aa, bb; aa = ((long) a) & 0xffffffffL; bb = ((long) b) & 0xffffffffL; aa += bb; return (int) (aa & 0xffffffffL); } private int uadd (int a, int b, int c) { return uadd(uadd(a, b), c); } private int uadd (int a, int b, int c, int d) { return uadd(uadd(a, b, c), d); } private int FF (int a, int b, int c, int d, int x, int s, int ac) { a = uadd(a, ((b & c) | (~b & d)), x, ac); return uadd(rotate_left(a, s), b); } private int GG (int a, int b, int c, int d, int x, int s, int ac) { a = uadd(a, ((b & d) | (c & ~d)), x, ac); return uadd(rotate_left(a, s), b); } private int HH (int a, int b, int c, int d, int x, int s, int ac) { a = uadd(a, (b ^ c ^ d), x, ac); return uadd(rotate_left(a, s) , b); } private int II (int a, int b, int c, int d, int x, int s, int ac) { a = uadd(a, (c ^ (b | ~d)), x, ac); return uadd(rotate_left(a, s), b); } private int[] Decode (byte buffer[], int len, int shift) { int out[]; int i, j; out = new int[16]; for (i = j = 0; j < len; i++, j += 4) { out[i] = ((int) (buffer[j + shift] & 0xff)) | (((int) (buffer[j + 1 + shift] & 0xff)) << 8) | (((int) (buffer[j + 2 + shift] & 0xff)) << 16) | (((int) (buffer[j + 3 + shift] & 0xff)) << 24); /* System.out.println("out[" + i + "] = \t" + ((int) buffer[j + 0 + shift] & 0xff) + "\t|\t" + ((int) buffer[j + 1 + shift] & 0xff) + "\t|\t" + ((int) buffer[j + 2 + shift] & 0xff) + "\t|\t" + ((int) buffer[j + 3 + shift] & 0xff));*/ } return out; } private void Transform (MD5State state, byte buffer[], int shift) { int a = state.state[0], b = state.state[1], c = state.state[2], d = state.state[3], x[]; x = Decode(buffer, 64, shift); /* Round 1 */ a = FF (a, b, c, d, x[ 0], 7, 0xd76aa478); /* 1 */ d = FF (d, a, b, c, x[ 1], 12, 0xe8c7b756); /* 2 */ c = FF (c, d, a, b, x[ 2], 17, 0x242070db); /* 3 */ b = FF (b, c, d, a, x[ 3], 22, 0xc1bdceee); /* 4 */ a = FF (a, b, c, d, x[ 4], 7, 0xf57c0faf); /* 5 */ d = FF (d, a, b, c, x[ 5], 12, 0x4787c62a); /* 6 */ c = FF (c, d, a, b, x[ 6], 17, 0xa8304613); /* 7 */ b = FF (b, c, d, a, x[ 7], 22, 0xfd469501); /* 8 */ a = FF (a, b, c, d, x[ 8], 7, 0x698098d8); /* 9 */ d = FF (d, a, b, c, x[ 9], 12, 0x8b44f7af); /* 10 */ c = FF (c, d, a, b, x[10], 17, 0xffff5bb1); /* 11 */ b = FF (b, c, d, a, x[11], 22, 0x895cd7be); /* 12 */ a = FF (a, b, c, d, x[12], 7, 0x6b901122); /* 13 */ d = FF (d, a, b, c, x[13], 12, 0xfd987193); /* 14 */ c = FF (c, d, a, b, x[14], 17, 0xa679438e); /* 15 */ b = FF (b, c, d, a, x[15], 22, 0x49b40821); /* 16 */ /* Round 2 */ a = GG (a, b, c, d, x[ 1], 5, 0xf61e2562); /* 17 */ d = GG (d, a, b, c, x[ 6], 9, 0xc040b340); /* 18 */ c = GG (c, d, a, b, x[11], 14, 0x265e5a51); /* 19 */ b = GG (b, c, d, a, x[ 0], 20, 0xe9b6c7aa); /* 20 */ a = GG (a, b, c, d, x[ 5], 5, 0xd62f105d); /* 21 */ d = GG (d, a, b, c, x[10], 9, 0x2441453); /* 22 */ c = GG (c, d, a, b, x[15], 14, 0xd8a1e681); /* 23 */ b = GG (b, c, d, a, x[ 4], 20, 0xe7d3fbc8); /* 24 */ a = GG (a, b, c, d, x[ 9], 5, 0x21e1cde6); /* 25 */ d = GG (d, a, b, c, x[14], 9, 0xc33707d6); /* 26 */ c = GG (c, d, a, b, x[ 3], 14, 0xf4d50d87); /* 27 */ b = GG (b, c, d, a, x[ 8], 20, 0x455a14ed); /* 28 */ a = GG (a, b, c, d, x[13], 5, 0xa9e3e905); /* 29 */ d = GG (d, a, b, c, x[ 2], 9, 0xfcefa3f8); /* 30 */ c = GG (c, d, a, b, x[ 7], 14, 0x676f02d9); /* 31 */ b = GG (b, c, d, a, x[12], 20, 0x8d2a4c8a); /* 32 */ /* Round 3 */ a = HH (a, b, c, d, x[ 5], 4, 0xfffa3942); /* 33 */ d = HH (d, a, b, c, x[ 8], 11, 0x8771f681); /* 34 */ c = HH (c, d, a, b, x[11], 16, 0x6d9d6122); /* 35 */ b = HH (b, c, d, a, x[14], 23, 0xfde5380c); /* 36 */ a = HH (a, b, c, d, x[ 1], 4, 0xa4beea44); /* 37 */ d = HH (d, a, b, c, x[ 4], 11, 0x4bdecfa9); /* 38 */ c = HH (c, d, a, b, x[ 7], 16, 0xf6bb4b60); /* 39 */ b = HH (b, c, d, a, x[10], 23, 0xbebfbc70); /* 40 */ a = HH (a, b, c, d, x[13], 4, 0x289b7ec6); /* 41 */ d = HH (d, a, b, c, x[ 0], 11, 0xeaa127fa); /* 42 */ c = HH (c, d, a, b, x[ 3], 16, 0xd4ef3085); /* 43 */ b = HH (b, c, d, a, x[ 6], 23, 0x4881d05); /* 44 */ a = HH (a, b, c, d, x[ 9], 4, 0xd9d4d039); /* 45 */ d = HH (d, a, b, c, x[12], 11, 0xe6db99e5); /* 46 */ c = HH (c, d, a, b, x[15], 16, 0x1fa27cf8); /* 47 */ b = HH (b, c, d, a, x[ 2], 23, 0xc4ac5665); /* 48 */ /* Round 4 */ a = II (a, b, c, d, x[ 0], 6, 0xf4292244); /* 49 */ d = II (d, a, b, c, x[ 7], 10, 0x432aff97); /* 50 */ c = II (c, d, a, b, x[14], 15, 0xab9423a7); /* 51 */ b = II (b, c, d, a, x[ 5], 21, 0xfc93a039); /* 52 */ a = II (a, b, c, d, x[12], 6, 0x655b59c3); /* 53 */ d = II (d, a, b, c, x[ 3], 10, 0x8f0ccc92); /* 54 */ c = II (c, d, a, b, x[10], 15, 0xffeff47d); /* 55 */ b = II (b, c, d, a, x[ 1], 21, 0x85845dd1); /* 56 */ a = II (a, b, c, d, x[ 8], 6, 0x6fa87e4f); /* 57 */ d = II (d, a, b, c, x[15], 10, 0xfe2ce6e0); /* 58 */ c = II (c, d, a, b, x[ 6], 15, 0xa3014314); /* 59 */ b = II (b, c, d, a, x[13], 21, 0x4e0811a1); /* 60 */ a = II (a, b, c, d, x[ 4], 6, 0xf7537e82); /* 61 */ d = II (d, a, b, c, x[11], 10, 0xbd3af235); /* 62 */ c = II (c, d, a, b, x[ 2], 15, 0x2ad7d2bb); /* 63 */ b = II (b, c, d, a, x[ 9], 21, 0xeb86d391); /* 64 */ state.state[0] += a; state.state[1] += b; state.state[2] += c; state.state[3] += d; } /** * Updates hash with the bytebuffer given (using at maximum length bytes from * that buffer) * * @param state Which state is updated * @param buffer Array of bytes to be hashed * @param offset Offset to buffer array * @param length Use at maximum `length' bytes (absolute * maximum is buffer.length) */ public void Update (MD5State stat, byte buffer[], int offset, int length) { int index, partlen, i, start; /* System.out.print("Offset = " + offset + "\tLength = " + length + "\t"); System.out.print("Buffer = "); for (i = 0; i < buffer.length; i++) System.out.print((int) (buffer[i] & 0xff) + " "); System.out.print("\n");*/ finals = null; /* Length can be told to be shorter, but not inter */ if ((length - offset)> buffer.length) length = buffer.length - offset; /* compute number of bytes mod 64 */ index = (int) (stat.count[0] >>> 3) & 0x3f; if ((stat.count[0] += (length << 3)) < (length << 3)) stat.count[1]++; stat.count[1] += length >>> 29; partlen = 64 - index; if (length >= partlen) { for (i = 0; i < partlen; i++) stat.buffer[i + index] = buffer[i + offset]; Transform(stat, stat.buffer, 0); for (i = partlen; (i + 63) < length; i+= 64) Transform(stat, buffer, i); index = 0; } else i = 0; /* buffer remaining input */ if (i < length) { start = i; for (; i < length; i++) stat.buffer[index + i - start] = buffer[i + offset]; } } /* * Update()s for other datatypes than byte[] also. Update(byte[], int) * is only the main driver. */ /** * Plain update, updates this object */ public void Update (byte buffer[], int offset, int length) { Update(this.state, buffer, offset, length); } public void Update (byte buffer[], int length) { Update(this.state, buffer, 0, length); } /** * Updates hash with given array of bytes * * @param buffer Array of bytes to use for updating the hash */ public void Update (byte buffer[]) { Update(buffer, 0, buffer.length); } /** * Updates hash with a single byte * * @param b Single byte to update the hash */ public void Update (byte b) { byte buffer[] = new byte[1]; buffer[0] = b; Update(buffer, 1); } /** * Update buffer with given string. * * @param s String to be update to hash (is used as * s.getBytes()) */ public void Update (String s) { byte chars[]; /* deprecated chars = new byte[s.length()]; s.getBytes(0, s.length(), chars, 0); */ chars = s.getBytes(); Update(chars, chars.length); } /** * Update buffer with a single integer (only & 0xff part is used, * as a byte) * * @param i Integer value, which is then converted to * byte as i & 0xff */ public void Update (int i) { Update((byte) (i & 0xff)); } private byte[] Encode (int input[], int len) { int i, j; byte out[]; out = new byte[len]; for (i = j = 0; j < len; i++, j += 4) { out[j] = (byte) (input[i] & 0xff); out[j + 1] = (byte) ((input[i] >>> 8) & 0xff); out[j + 2] = (byte) ((input[i] >>> 16) & 0xff); out[j + 3] = (byte) ((input[i] >>> 24) & 0xff); } return out; } /** * Returns array of bytes (16 bytes) representing hash as of the * current state of this object. Note: getting a hash does not * invalidate the hash object, it only creates a copy of the real * state which is finalized. * * @return Array of 16 bytes, the hash of all updated bytes */ public synchronized byte[] Final () { byte bits[]; int index, padlen; MD5State fin; if (finals == null) { fin = new MD5State(state); bits = Encode(fin.count, 8); index = (int) ((fin.count[0] >>> 3) & 0x3f); padlen = (index < 56) ? (56 - index) : (120 - index); Update(fin, padding, 0, padlen); /**/ Update(fin, bits, 0, 8); /* Update() sets finalds to null */ finals = fin; } return Encode(finals.state, 16); } /** * Turns array of bytes into string representing each byte as * unsigned hex number. * * @param hash Array of bytes to convert to hex-string * @return Generated hex string */ public static String asHex (byte hash[]) { StringBuffer buf = new StringBuffer(hash.length * 2); int i; for (i = 0; i < hash.length; i++) { if (((int) hash[i] & 0xff) < 0x10) buf.append("0"); buf.append(Long.toString((int) hash[i] & 0xff, 16)); } return buf.toString(); } /** * Returns 32-character hex representation of this objects hash * * @return String of this object's hash */ public String asHex () { return asHex(this.Final()); } } // MD5