1 /* 2 * Conditions Of Use 3 * 4 * This software was developed by employees of the National Institute of 5 * Standards and Technology (NIST), an agency of the Federal Government. 6 * Pursuant to title 15 Untied States Code Section 105, works of NIST 7 * employees are not subject to copyright protection in the United States 8 * and are considered to be in the public domain. As a result, a formal 9 * license is not needed to use the software. 10 * 11 * This software is provided by NIST as a service and is expressly 12 * provided "AS IS." NIST MAKES NO WARRANTY OF ANY KIND, EXPRESS, IMPLIED 13 * OR STATUTORY, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTY OF 14 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT 15 * AND DATA ACCURACY. NIST does not warrant or make any representations 16 * regarding the use of the software or the results thereof, including but 17 * not limited to the correctness, accuracy, reliability or usefulness of 18 * the software. 19 * 20 * Permission to use this software is contingent upon your acceptance 21 * of the terms of this agreement 22 * 23 * . 24 * 25 */ 26 /******************************************* 27 * PRODUCT OF PT INOVACAO - EST DEPARTMENT * 28 *******************************************/ 29 30 package gov.nist.javax.sip.parser.ims; 31 32 import gov.nist.core.Token; 33 import gov.nist.javax.sip.header.SIPHeader; 34 import gov.nist.javax.sip.header.ims.PVisitedNetworkID; 35 import gov.nist.javax.sip.header.ims.PVisitedNetworkIDList; 36 import gov.nist.javax.sip.parser.Lexer; 37 import gov.nist.javax.sip.parser.ParametersParser; 38 import gov.nist.javax.sip.parser.TokenTypes; 39 40 import java.text.ParseException; 41 42 /** 43 * P-Visited-Network-ID header parser. 44 * 45 * <pre> 46 * P-Visited-Network-ID = "P-Visited-Network-ID" HCOLON 47 * vnetwork-spec 48 * *(COMMA vnetwork-spec) 49 * vnetwork-spec = (token / quoted-string) 50 * *(SEMI vnetwork-param) 51 * vnetwork-param = generic-param 52 * </pre> 53 * 54 * @author ALEXANDRE MIGUEL SILVA SANTOS 55 */ 56 57 /* 58 59 */ 60 61 public class PVisitedNetworkIDParser extends ParametersParser implements TokenTypes { 62 63 /** 64 * Constructor 65 */ PVisitedNetworkIDParser(String networkID)66 public PVisitedNetworkIDParser(String networkID) { 67 super(networkID); 68 69 } 70 PVisitedNetworkIDParser(Lexer lexer)71 protected PVisitedNetworkIDParser(Lexer lexer) { 72 super(lexer); 73 74 } 75 76 77 78 parse()79 public SIPHeader parse() throws ParseException { 80 81 PVisitedNetworkIDList visitedNetworkIDList = new PVisitedNetworkIDList(); 82 83 if (debug) 84 dbg_enter("VisitedNetworkIDParser.parse"); 85 86 try { 87 this.lexer.match(TokenTypes.P_VISITED_NETWORK_ID); 88 this.lexer.SPorHT(); 89 this.lexer.match(':'); 90 this.lexer.SPorHT(); 91 92 while (true) { 93 94 PVisitedNetworkID visitedNetworkID = new PVisitedNetworkID(); 95 96 if (this.lexer.lookAhead(0) == '\"') 97 parseQuotedString(visitedNetworkID); 98 else 99 parseToken(visitedNetworkID); 100 101 visitedNetworkIDList.add(visitedNetworkID); 102 103 this.lexer.SPorHT(); 104 char la = lexer.lookAhead(0); 105 if (la == ',') { 106 this.lexer.match(','); 107 this.lexer.SPorHT(); 108 } else if (la == '\n') 109 break; 110 else 111 throw createParseException("unexpected char = " + la); 112 } 113 return visitedNetworkIDList; 114 } finally { 115 if (debug) 116 dbg_leave("VisitedNetworkIDParser.parse"); 117 } 118 119 } 120 parseQuotedString(PVisitedNetworkID visitedNetworkID)121 protected void parseQuotedString(PVisitedNetworkID visitedNetworkID) throws ParseException { 122 123 if (debug) 124 dbg_enter("parseQuotedString"); 125 126 try { 127 128 StringBuffer retval = new StringBuffer(); 129 130 if (this.lexer.lookAhead(0) != '\"') 131 throw createParseException("unexpected char"); 132 this.lexer.consume(1); 133 134 while (true) { 135 char next = this.lexer.getNextChar(); 136 if (next == '\"') { 137 // Got to the terminating quote. 138 break; 139 } else if (next == '\0') { 140 throw new ParseException("unexpected EOL", 1); 141 } else if (next == '\\') { 142 retval.append(next); 143 next = this.lexer.getNextChar(); 144 retval.append(next); 145 } else { 146 retval.append(next); 147 } 148 } 149 150 visitedNetworkID.setVisitedNetworkID(retval.toString()); 151 super.parse(visitedNetworkID); 152 153 154 155 }finally { 156 if (debug) 157 dbg_leave("parseQuotedString.parse"); 158 } 159 160 } 161 parseToken(PVisitedNetworkID visitedNetworkID)162 protected void parseToken(PVisitedNetworkID visitedNetworkID) throws ParseException 163 { 164 // issued by Miguel Freitas 165 166 lexer.match(TokenTypes.ID); 167 Token token = lexer.getNextToken(); 168 //String value = token.getTokenValue(); 169 visitedNetworkID.setVisitedNetworkID(token); 170 super.parse(visitedNetworkID); 171 172 } 173 174 175 } 176