838 lines
26 KiB
Java
838 lines
26 KiB
Java
/*
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* Conditions Of Use
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*
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* This software was developed by employees of the National Institute of
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* Standards and Technology (NIST), an agency of the Federal Government.
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* Pursuant to title 15 Untied States Code Section 105, works of NIST
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* employees are not subject to copyright protection in the United States
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* and are considered to be in the public domain. As a result, a formal
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* license is not needed to use the software.
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*
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* This software is provided by NIST as a service and is expressly
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* provided "AS IS." NIST MAKES NO WARRANTY OF ANY KIND, EXPRESS, IMPLIED
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* OR STATUTORY, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTY OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT
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* AND DATA ACCURACY. NIST does not warrant or make any representations
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* regarding the use of the software or the results thereof, including but
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* not limited to the correctness, accuracy, reliability or usefulness of
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* the software.
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*
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* Permission to use this software is contingent upon your acceptance
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* of the terms of this agreement
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*
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* .
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*
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*/
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package gov.nist.javax.sip.parser;
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import gov.nist.core.HostNameParser;
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import gov.nist.core.HostPort;
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import gov.nist.core.NameValue;
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import gov.nist.core.NameValueList;
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import gov.nist.core.Token;
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import gov.nist.javax.sip.address.GenericURI;
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import gov.nist.javax.sip.address.SipUri;
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import gov.nist.javax.sip.address.TelURLImpl;
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import gov.nist.javax.sip.address.TelephoneNumber;
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import java.text.ParseException;
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/**
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* Parser For SIP and Tel URLs. Other kinds of URL's are handled by the
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* J2SE 1.4 URL class.
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* @version 1.2 $Revision: 1.27 $ $Date: 2009/10/22 10:27:39 $
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*
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* @author M. Ranganathan <br/>
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*
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*
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*/
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public class URLParser extends Parser {
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public URLParser(String url) {
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this.lexer = new Lexer("sip_urlLexer", url);
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}
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// public tag added - issued by Miguel Freitas
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public URLParser(Lexer lexer) {
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this.lexer = lexer;
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this.lexer.selectLexer("sip_urlLexer");
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}
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protected static boolean isMark(char next) {
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switch (next) {
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case '-':
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case '_':
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case '.':
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case '!':
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case '~':
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case '*':
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case '\'':
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case '(':
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case ')':
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return true;
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default:
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return false;
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}
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}
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protected static boolean isUnreserved(char next) {
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return Lexer.isAlphaDigit(next) || isMark(next);
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}
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protected static boolean isReservedNoSlash(char next) {
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switch (next) {
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case ';':
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case '?':
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case ':':
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case '@':
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case '&':
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case '+':
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case '$':
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case ',':
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return true;
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default:
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return false;
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}
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}
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// Missing '=' bug in character set - discovered by interop testing
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// at SIPIT 13 by Bob Johnson and Scott Holben.
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// change . to ; by Bruno Konik
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protected static boolean isUserUnreserved(char la) {
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switch (la) {
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case '&':
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case '?':
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case '+':
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case '$':
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case '#':
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case '/':
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case ',':
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case ';':
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case '=':
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return true;
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default:
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return false;
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}
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}
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protected String unreserved() throws ParseException {
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char next = lexer.lookAhead(0);
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if (isUnreserved(next)) {
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lexer.consume(1);
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return String.valueOf(next);
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} else
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throw createParseException("unreserved");
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}
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/** Name or value of a parameter.
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*/
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protected String paramNameOrValue() throws ParseException {
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int startIdx = lexer.getPtr();
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while (lexer.hasMoreChars()) {
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char next = lexer.lookAhead(0);
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boolean isValidChar = false;
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switch (next) {
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case '[':
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case ']':// JvB: fixed this one
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case '/':
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case ':':
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case '&':
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case '+':
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case '$':
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isValidChar = true;
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}
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if (isValidChar || isUnreserved(next)) {
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lexer.consume(1);
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} else if (isEscaped()) {
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lexer.consume(3);
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} else
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break;
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}
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return lexer.getBuffer().substring(startIdx, lexer.getPtr());
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}
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private NameValue uriParam() throws ParseException {
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if (debug)
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dbg_enter("uriParam");
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try {
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String pvalue = "";
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String pname = paramNameOrValue();
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char next = lexer.lookAhead(0);
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boolean isFlagParam = true;
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if (next == '=') {
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lexer.consume(1);
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pvalue = paramNameOrValue();
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isFlagParam = false;
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}
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if (pname.length() == 0 &&
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( pvalue == null ||
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pvalue.length() == 0))
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return null;
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else return new NameValue(pname, pvalue, isFlagParam);
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} finally {
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if (debug)
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dbg_leave("uriParam");
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}
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}
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protected static boolean isReserved(char next) {
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switch (next) {
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case ';':
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case '/':
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case '?':
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case ':':
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case '=': // Bug fix by Bruno Konik
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case '@':
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case '&':
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case '+':
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case '$':
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case ',':
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return true;
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default:
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return false;
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}
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}
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protected String reserved() throws ParseException {
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char next = lexer.lookAhead(0);
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if (isReserved(next)) {
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lexer.consume(1);
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return new StringBuffer().append(next).toString();
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} else
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throw createParseException("reserved");
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}
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protected boolean isEscaped() {
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try {
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return lexer.lookAhead(0) == '%' &&
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Lexer.isHexDigit(lexer.lookAhead(1)) &&
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Lexer.isHexDigit(lexer.lookAhead(2));
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} catch (Exception ex) {
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return false;
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}
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}
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protected String escaped() throws ParseException {
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if (debug)
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dbg_enter("escaped");
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try {
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StringBuffer retval = new StringBuffer();
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char next = lexer.lookAhead(0);
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char next1 = lexer.lookAhead(1);
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char next2 = lexer.lookAhead(2);
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if (next == '%'
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&& Lexer.isHexDigit(next1)
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&& Lexer.isHexDigit(next2)) {
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lexer.consume(3);
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retval.append(next);
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retval.append(next1);
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retval.append(next2);
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} else
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throw createParseException("escaped");
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return retval.toString();
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} finally {
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if (debug)
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dbg_leave("escaped");
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}
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}
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protected String mark() throws ParseException {
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if (debug)
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dbg_enter("mark");
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try {
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char next = lexer.lookAhead(0);
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if (isMark(next)) {
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lexer.consume(1);
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return new String( new char[]{next} );
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} else
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throw createParseException("mark");
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} finally {
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if (debug)
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dbg_leave("mark");
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}
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}
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protected String uric() {
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if (debug)
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dbg_enter("uric");
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try {
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try {
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char la = lexer.lookAhead(0);
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if (isUnreserved(la)) {
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lexer.consume(1);
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return Lexer.charAsString(la);
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} else if (isReserved(la)) {
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lexer.consume(1);
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return Lexer.charAsString(la);
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} else if (isEscaped()) {
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String retval = lexer.charAsString(3);
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lexer.consume(3);
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return retval;
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} else
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return null;
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} catch (Exception ex) {
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return null;
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}
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} finally {
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if (debug)
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dbg_leave("uric");
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}
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}
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protected String uricNoSlash() {
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if (debug)
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dbg_enter("uricNoSlash");
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try {
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try {
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char la = lexer.lookAhead(0);
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if (isEscaped()) {
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String retval = lexer.charAsString(3);
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lexer.consume(3);
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return retval;
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} else if (isUnreserved(la)) {
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lexer.consume(1);
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return Lexer.charAsString(la);
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} else if (isReservedNoSlash(la)) {
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lexer.consume(1);
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return Lexer.charAsString(la);
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} else
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return null;
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} catch (ParseException ex) {
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return null;
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}
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} finally {
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if (debug)
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dbg_leave("uricNoSlash");
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}
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}
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protected String uricString() throws ParseException {
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StringBuffer retval = new StringBuffer();
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while (true) {
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String next = uric();
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if (next == null) {
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char la = lexer.lookAhead(0);
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// JvB: allow IPv6 addresses in generic URI strings
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// e.g. http://[::1]
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if ( la == '[' ) {
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HostNameParser hnp = new HostNameParser(this.getLexer());
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HostPort hp = hnp.hostPort( false );
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retval.append(hp.toString());
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continue;
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}
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break;
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}
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retval.append(next);
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}
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return retval.toString();
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}
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/**
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* Parse and return a structure for a generic URL.
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* Note that non SIP URLs are just stored as a string (not parsed).
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* @return URI is a URL structure for a SIP url.
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* @throws ParseException if there was a problem parsing.
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*/
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public GenericURI uriReference( boolean inBrackets ) throws ParseException {
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if (debug)
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dbg_enter("uriReference");
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GenericURI retval = null;
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Token[] tokens = lexer.peekNextToken(2);
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Token t1 = (Token) tokens[0];
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Token t2 = (Token) tokens[1];
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try {
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if (t1.getTokenType() == TokenTypes.SIP ||
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t1.getTokenType() == TokenTypes.SIPS) {
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if (t2.getTokenType() == ':')
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retval = sipURL( inBrackets );
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else
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throw createParseException("Expecting \':\'");
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} else if (t1.getTokenType() == TokenTypes.TEL) {
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if (t2.getTokenType() == ':') {
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retval = telURL( inBrackets );
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} else
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throw createParseException("Expecting \':\'");
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} else {
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String urlString = uricString();
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try {
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retval = new GenericURI(urlString);
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} catch (ParseException ex) {
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throw createParseException(ex.getMessage());
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}
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}
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} finally {
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if (debug)
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dbg_leave("uriReference");
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}
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return retval;
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}
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/**
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* Parser for the base phone number.
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*/
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private String base_phone_number() throws ParseException {
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StringBuffer s = new StringBuffer();
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if (debug)
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dbg_enter("base_phone_number");
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try {
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int lc = 0;
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while (lexer.hasMoreChars()) {
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char w = lexer.lookAhead(0);
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if (Lexer.isDigit(w)
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|| w == '-'
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|| w == '.'
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|| w == '('
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|| w == ')') {
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lexer.consume(1);
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s.append(w);
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lc++;
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} else if (lc > 0)
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break;
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else
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throw createParseException("unexpected " + w);
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}
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return s.toString();
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} finally {
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if (debug)
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dbg_leave("base_phone_number");
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}
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}
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/**
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* Parser for the local phone #.
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*/
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private String local_number() throws ParseException {
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StringBuffer s = new StringBuffer();
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if (debug)
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dbg_enter("local_number");
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try {
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int lc = 0;
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while (lexer.hasMoreChars()) {
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char la = lexer.lookAhead(0);
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if (la == '*'
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|| la == '#'
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|| la == '-'
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|| la == '.'
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|| la == '('
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|| la == ')'
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// JvB: allow 'A'..'F', should be uppercase
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|| Lexer.isHexDigit(la)) {
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lexer.consume(1);
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s.append(la);
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lc++;
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} else if (lc > 0)
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break;
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else
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throw createParseException("unexepcted " + la);
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}
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return s.toString();
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} finally {
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if (debug)
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dbg_leave("local_number");
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}
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}
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/**
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* Parser for telephone subscriber.
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*
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* @return the parsed telephone number.
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*/
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public final TelephoneNumber parseTelephoneNumber( boolean inBrackets )
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throws ParseException {
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TelephoneNumber tn;
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if (debug)
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dbg_enter("telephone_subscriber");
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lexer.selectLexer("charLexer");
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try {
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char c = lexer.lookAhead(0);
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if (c == '+')
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tn = global_phone_number( inBrackets );
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else if (
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Lexer.isHexDigit(c)// see RFC3966
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|| c == '#'
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|| c == '*'
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|| c == '-'
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|| c == '.'
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|| c == '('
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|| c == ')' ) {
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tn = local_phone_number( inBrackets );
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} else
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throw createParseException("unexpected char " + c);
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return tn;
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} finally {
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if (debug)
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dbg_leave("telephone_subscriber");
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}
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}
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private final TelephoneNumber global_phone_number( boolean inBrackets ) throws ParseException {
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if (debug)
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dbg_enter("global_phone_number");
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try {
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TelephoneNumber tn = new TelephoneNumber();
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tn.setGlobal(true);
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NameValueList nv = null;
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this.lexer.match(PLUS);
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String b = base_phone_number();
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tn.setPhoneNumber(b);
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if (lexer.hasMoreChars()) {
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char tok = lexer.lookAhead(0);
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if (tok == ';' && inBrackets) {
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this.lexer.consume(1);
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nv = tel_parameters();
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tn.setParameters(nv);
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}
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}
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return tn;
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} finally {
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if (debug)
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dbg_leave("global_phone_number");
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}
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}
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private TelephoneNumber local_phone_number( boolean inBrackets ) throws ParseException {
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if (debug)
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dbg_enter("local_phone_number");
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TelephoneNumber tn = new TelephoneNumber();
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tn.setGlobal(false);
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NameValueList nv = null;
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String b = null;
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try {
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b = local_number();
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tn.setPhoneNumber(b);
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if (lexer.hasMoreChars()) {
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Token tok = this.lexer.peekNextToken();
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switch (tok.getTokenType()) {
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case SEMICOLON:
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{
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if (inBrackets) {
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this.lexer.consume(1);
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nv = tel_parameters();
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tn.setParameters(nv);
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}
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break;
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}
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default :
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{
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break;
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}
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}
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}
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} finally {
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if (debug)
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dbg_leave("local_phone_number");
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}
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return tn;
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}
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private NameValueList tel_parameters() throws ParseException {
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NameValueList nvList = new NameValueList();
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// JvB: Need to handle 'phone-context' specially
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// 'isub' (or 'ext') MUST appear first, but we accept any order here
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NameValue nv;
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while ( true ) {
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String pname = paramNameOrValue();
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// Handle 'phone-context' specially, it may start with '+'
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if ( pname.equalsIgnoreCase("phone-context")) {
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nv = phone_context();
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} else {
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if (lexer.lookAhead(0) == '=') {
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lexer.consume(1);
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String value = paramNameOrValue();
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nv = new NameValue( pname, value, false );
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} else {
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nv = new NameValue( pname, "", true );// flag param
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}
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}
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nvList.set( nv );
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if ( lexer.lookAhead(0) == ';' ) {
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lexer.consume(1);
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} else {
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return nvList;
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}
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}
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}
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/**
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* Parses the 'phone-context' parameter in tel: URLs
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* @throws ParseException
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*/
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private NameValue phone_context() throws ParseException {
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lexer.match('=');
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char la = lexer.lookAhead(0);
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Object value;
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if (la=='+') {// global-number-digits
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lexer.consume(1);// skip '+'
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value = "+" + base_phone_number();
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} else if ( Lexer.isAlphaDigit(la) ) {
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Token t = lexer.match( Lexer.ID );// more broad than allowed
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|
value = t.getTokenValue();
|
|
} else {
|
|
throw new ParseException( "Invalid phone-context:" + la , -1 );
|
|
}
|
|
return new NameValue( "phone-context", value, false );
|
|
}
|
|
|
|
/**
|
|
* Parse and return a structure for a Tel URL.
|
|
* @return a parsed tel url structure.
|
|
*/
|
|
public TelURLImpl telURL( boolean inBrackets ) throws ParseException {
|
|
lexer.match(TokenTypes.TEL);
|
|
lexer.match(':');
|
|
TelephoneNumber tn = this.parseTelephoneNumber(inBrackets);
|
|
TelURLImpl telUrl = new TelURLImpl();
|
|
telUrl.setTelephoneNumber(tn);
|
|
return telUrl;
|
|
|
|
}
|
|
|
|
/**
|
|
* Parse and return a structure for a SIP URL.
|
|
* @return a URL structure for a SIP url.
|
|
* @throws ParseException if there was a problem parsing.
|
|
*/
|
|
public SipUri sipURL( boolean inBrackets ) throws ParseException {
|
|
if (debug)
|
|
dbg_enter("sipURL");
|
|
SipUri retval = new SipUri();
|
|
// pmusgrave - handle sips case
|
|
Token nextToken = lexer.peekNextToken();
|
|
int sipOrSips = TokenTypes.SIP;
|
|
String scheme = TokenNames.SIP;
|
|
if ( nextToken.getTokenType() == TokenTypes.SIPS)
|
|
{
|
|
sipOrSips = TokenTypes.SIPS;
|
|
scheme = TokenNames.SIPS;
|
|
}
|
|
|
|
try {
|
|
lexer.match(sipOrSips);
|
|
lexer.match(':');
|
|
retval.setScheme(scheme);
|
|
int startOfUser = lexer.markInputPosition();
|
|
String userOrHost = user();// Note: user may contain ';', host may not...
|
|
String passOrPort = null;
|
|
|
|
// name:password or host:port
|
|
if ( lexer.lookAhead() == ':' ) {
|
|
lexer.consume(1);
|
|
passOrPort = password();
|
|
}
|
|
|
|
// name@hostPort
|
|
if ( lexer.lookAhead() == '@' ) {
|
|
lexer.consume(1);
|
|
retval.setUser( userOrHost );
|
|
if (passOrPort!=null) retval.setUserPassword( passOrPort );
|
|
} else {
|
|
// then userOrHost was a host, backtrack just in case a ';' was eaten...
|
|
lexer.rewindInputPosition( startOfUser );
|
|
}
|
|
|
|
HostNameParser hnp = new HostNameParser(this.getLexer());
|
|
HostPort hp = hnp.hostPort( false );
|
|
retval.setHostPort(hp);
|
|
|
|
lexer.selectLexer("charLexer");
|
|
while (lexer.hasMoreChars()) {
|
|
// If the URI is not enclosed in brackets, parameters belong to header
|
|
if (lexer.lookAhead(0) != ';' || !inBrackets)
|
|
break;
|
|
lexer.consume(1);
|
|
NameValue parms = uriParam();
|
|
if (parms != null) retval.setUriParameter(parms);
|
|
}
|
|
|
|
if (lexer.hasMoreChars() && lexer.lookAhead(0) == '?') {
|
|
lexer.consume(1);
|
|
while (lexer.hasMoreChars()) {
|
|
NameValue parms = qheader();
|
|
retval.setQHeader(parms);
|
|
if (lexer.hasMoreChars() && lexer.lookAhead(0) != '&')
|
|
break;
|
|
else
|
|
lexer.consume(1);
|
|
}
|
|
}
|
|
return retval;
|
|
// BEGIN android-added
|
|
} catch (RuntimeException e) {
|
|
throw new ParseException("Invalid URL: " + lexer.getBuffer(), -1);
|
|
// END android-added
|
|
} finally {
|
|
if (debug)
|
|
dbg_leave("sipURL");
|
|
}
|
|
}
|
|
|
|
public String peekScheme() throws ParseException {
|
|
Token[] tokens = lexer.peekNextToken(1);
|
|
if (tokens.length == 0)
|
|
return null;
|
|
String scheme = ((Token) tokens[0]).getTokenValue();
|
|
return scheme;
|
|
}
|
|
|
|
/**
|
|
* Get a name value for a given query header (ie one that comes
|
|
* after the ?).
|
|
*/
|
|
protected NameValue qheader() throws ParseException {
|
|
String name = lexer.getNextToken('=');
|
|
lexer.consume(1);
|
|
String value = hvalue();
|
|
return new NameValue(name, value, false);
|
|
|
|
}
|
|
|
|
protected String hvalue() throws ParseException {
|
|
StringBuffer retval = new StringBuffer();
|
|
while (lexer.hasMoreChars()) {
|
|
char la = lexer.lookAhead(0);
|
|
// Look for a character that can terminate a URL.
|
|
boolean isValidChar = false;
|
|
switch (la) {
|
|
case '+':
|
|
case '?':
|
|
case ':':
|
|
case '[':
|
|
case ']':
|
|
case '/':
|
|
case '$':
|
|
case '_':
|
|
case '-':
|
|
case '"':
|
|
case '!':
|
|
case '~':
|
|
case '*':
|
|
case '.':
|
|
case '(':
|
|
case ')':
|
|
isValidChar = true;
|
|
}
|
|
if (isValidChar || Lexer.isAlphaDigit(la)) {
|
|
lexer.consume(1);
|
|
retval.append(la);
|
|
} else if (la == '%') {
|
|
retval.append(escaped());
|
|
} else
|
|
break;
|
|
}
|
|
return retval.toString();
|
|
}
|
|
|
|
/**
|
|
* Scan forward until you hit a terminating character for a URL.
|
|
* We do not handle non sip urls in this implementation.
|
|
* @return the string that takes us to the end of this URL (i.e. to
|
|
* the next delimiter).
|
|
*/
|
|
protected String urlString() throws ParseException {
|
|
StringBuffer retval = new StringBuffer();
|
|
lexer.selectLexer("charLexer");
|
|
|
|
while (lexer.hasMoreChars()) {
|
|
char la = lexer.lookAhead(0);
|
|
// Look for a character that can terminate a URL.
|
|
if (la == ' '
|
|
|| la == '\t'
|
|
|| la == '\n'
|
|
|| la == '>'
|
|
|| la == '<')
|
|
break;
|
|
lexer.consume(0);
|
|
retval.append(la);
|
|
}
|
|
return retval.toString();
|
|
}
|
|
|
|
protected String user() throws ParseException {
|
|
if (debug)
|
|
dbg_enter("user");
|
|
try {
|
|
int startIdx = lexer.getPtr();
|
|
while (lexer.hasMoreChars()) {
|
|
char la = lexer.lookAhead(0);
|
|
if (isUnreserved(la) || isUserUnreserved(la)) {
|
|
lexer.consume(1);
|
|
} else if (isEscaped()) {
|
|
lexer.consume(3);
|
|
} else
|
|
break;
|
|
}
|
|
return lexer.getBuffer().substring(startIdx, lexer.getPtr());
|
|
} finally {
|
|
if (debug)
|
|
dbg_leave("user");
|
|
}
|
|
|
|
}
|
|
|
|
protected String password() throws ParseException {
|
|
int startIdx = lexer.getPtr();
|
|
while (true) {
|
|
char la = lexer.lookAhead(0);
|
|
boolean isValidChar = false;
|
|
switch (la) {
|
|
case '&':
|
|
case '=':
|
|
case '+':
|
|
case '$':
|
|
case ',':
|
|
isValidChar = true;
|
|
}
|
|
if (isValidChar || isUnreserved(la)) {
|
|
lexer.consume(1);
|
|
} else if (isEscaped()) {
|
|
lexer.consume(3); // bug reported by
|
|
// Jeff Haynie
|
|
} else
|
|
break;
|
|
|
|
}
|
|
return lexer.getBuffer().substring(startIdx, lexer.getPtr());
|
|
}
|
|
|
|
/**
|
|
* Default parse method. This method just calls uriReference.
|
|
*/
|
|
public GenericURI parse() throws ParseException {
|
|
return uriReference( true );
|
|
}
|
|
|
|
// quick test routine for debugging type assignment
|
|
public static void main(String[] args) throws ParseException
|
|
{
|
|
// quick test for sips parsing
|
|
String[] test = { "sip:alice@example.com",
|
|
"sips:alice@examples.com" ,
|
|
"sip:3Zqkv5dajqaaas0tCjCxT0xH2ZEuEMsFl0xoasip%3A%2B3519116786244%40siplab.domain.com@213.0.115.163:7070"};
|
|
|
|
for ( int i = 0; i < test.length; i++)
|
|
{
|
|
URLParser p = new URLParser(test[i]);
|
|
|
|
GenericURI uri = p.parse();
|
|
System.out.println("uri type returned " + uri.getClass().getName());
|
|
System.out.println(test[i] + " is SipUri? " + uri.isSipURI()
|
|
+ ">" + uri.encode());
|
|
}
|
|
}
|
|
|
|
/**
|
|
|
|
**/
|
|
}
|
|
|