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      1 package gov.nist.javax.sip.parser.ims;
      2 /*
      3 * Conditions Of Use
      4 *
      5 * This software was developed by employees of the National Institute of
      6 * Standards and Technology (NIST), an agency of the Federal Government.
      7 * Pursuant to title 15 Untied States Code Section 105, works of NIST
      8 * employees are not subject to copyright protection in the United States
      9 * and are considered to be in the public domain.  As a result, a formal
     10 * license is not needed to use the software.
     11 *
     12 * This software is provided by NIST as a service and is expressly
     13 * provided "AS IS."  NIST MAKES NO WARRANTY OF ANY KIND, EXPRESS, IMPLIED
     14 * OR STATUTORY, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTY OF
     15 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT
     16 * AND DATA ACCURACY.  NIST does not warrant or make any representations
     17 * regarding the use of the software or the results thereof, including but
     18 * not limited to the correctness, accuracy, reliability or usefulness of
     19 * the software.
     20 *
     21 * Permission to use this software is contingent upon your acceptance
     22 * of the terms of this agreement
     23 *
     24 * .
     25 *
     26 */
     27 
     28 import java.text.ParseException;
     29 import gov.nist.javax.sip.header.SIPHeader;
     30 import gov.nist.javax.sip.header.ims.PUserDatabase;
     31 import gov.nist.javax.sip.parser.Lexer;
     32 import gov.nist.javax.sip.parser.ParametersParser;
     33 import gov.nist.javax.sip.parser.TokenTypes;
     34 
     35 /**
     36  *
     37  * @author aayush.bhatnagar
     38  * Rancore Technologies Pvt Ltd, Mumbai India.
     39  *
     40  * This is the parser for the P-user-database header.
     41  * The syntax for the P-user-database header as per
     42  * RFC 4457 is given below:
     43  *
     44  * P-User-Database = "P-User-Database" HCOLON database
     45  *                    *( SEMI generic-param )
     46  * database        = LAQUOT DiameterURI RAQUOT
     47  *
     48  * Eg: P-User-Database: <aaa://host.example.com;transport=tcp>
     49  *
     50  */
     51 public class PUserDatabaseParser extends ParametersParser implements TokenTypes{
     52 
     53     /**
     54      *
     55      * @param databaseName
     56      */
     57     public PUserDatabaseParser(String databaseName)
     58     {
     59         super(databaseName);
     60     }
     61 
     62     /**
     63      *
     64      * @param lexer
     65      */
     66     public PUserDatabaseParser(Lexer lexer)
     67     {
     68         super(lexer);
     69     }
     70 
     71     public SIPHeader parse() throws ParseException {
     72 
     73         if (debug)
     74             dbg_enter("PUserDatabase.parse");
     75 
     76         try{
     77             this.lexer.match(TokenTypes.P_USER_DATABASE);
     78             this.lexer.SPorHT();
     79             this.lexer.match(':');
     80             this.lexer.SPorHT();
     81 
     82             PUserDatabase userDatabase = new PUserDatabase();
     83             this.parseheader(userDatabase);
     84 
     85              return userDatabase;
     86         }
     87         finally{
     88             if(debug)
     89             dbg_leave("PUserDatabase.parse");
     90         }
     91     }
     92 
     93     private void parseheader(PUserDatabase userDatabase) throws ParseException
     94     {
     95         StringBuffer dbname = new StringBuffer();
     96         this.lexer.match(LESS_THAN);
     97 
     98         while(this.lexer.hasMoreChars())
     99         {
    100             char next = this.lexer.getNextChar();
    101           if (next!='>'&&next!='\n')
    102           {
    103           dbname.append(next);
    104           }
    105 
    106          }
    107         userDatabase.setDatabaseName(dbname.toString());
    108           super.parse(userDatabase);
    109 
    110 }
    111 }
    112