gov.nist.javax.sip.parser.ChallengeParser Maven / Gradle / Ivy
/*
* Conditions Of Use
*
* This software was developed by employees of the National Institute of
* Standards and Technology (NIST), an agency of the Federal Government.
* Pursuant to title 15 Untied States Code Section 105, works of NIST
* employees are not subject to copyright protection in the United States
* and are considered to be in the public domain. As a result, a formal
* license is not needed to use the software.
*
* This software is provided by NIST as a service and is expressly
* provided "AS IS." NIST MAKES NO WARRANTY OF ANY KIND, EXPRESS, IMPLIED
* OR STATUTORY, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTY OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT
* AND DATA ACCURACY. NIST does not warrant or make any representations
* regarding the use of the software or the results thereof, including but
* not limited to the correctness, accuracy, reliability or usefulness of
* the software.
*
* Permission to use this software is contingent upon your acceptance
* of the terms of this agreement
*
* .
*
*/
package android.gov.nist.javax.sip.parser;
import android.gov.nist.javax.sip.header.*;
import android.gov.nist.core.*;
import java.text.ParseException;
/**
* Parser for the challenge portion of the authentication header.
*
* @version 1.2 $Revision: 1.8 $ $Date: 2009-07-17 18:57:58 $
* @since 1.1
*
* @author Olivier Deruelle
*
*
*/
public abstract class ChallengeParser extends HeaderParser {
/**
* Constructor
* @param String challenge message to parse to set
*/
protected ChallengeParser(String challenge) {
super(challenge);
}
/**
* Constructor
* @param String challenge message to parse to set
*/
protected ChallengeParser(Lexer lexer) {
super(lexer);
}
/**
* Get the parameter of the challenge string
* @return NameValue containing the parameter
*/
protected void parseParameter(AuthenticationHeader header)
throws ParseException {
if (debug)
dbg_enter("parseParameter");
try {
NameValue nv = this.nameValue('=');
header.setParameter(nv);
} finally {
if (debug)
dbg_leave("parseParameter");
}
}
/**
* parser the String message.
* @param header - header structure to fill in.
* @throws ParseException if the message does not respect the spec.
*/
public void parse(AuthenticationHeader header) throws ParseException {
// the Scheme:
this.lexer.SPorHT();
lexer.match(TokenTypes.ID);
Token type = lexer.getNextToken();
this.lexer.SPorHT();
header.setScheme(type.getTokenValue());
// The parameters:
try {
while (lexer.lookAhead(0) != '\n') {
this.parseParameter(header);
this.lexer.SPorHT();
char la = lexer.lookAhead(0);
if (la == '\n' || la == '\0')
break;
this.lexer.match(',');
this.lexer.SPorHT();
}
} catch (ParseException ex) {
throw ex;
}
}
}