package tools.sniffer;
import java.util.*;
import java.text.*;
import gov.nist.javax.sip.parser.*;
import gov.nist.javax.sip.message.*;
/**
* A parser for Sniff files. This is the main
* workhorse that reads a Ethereal Sniff file and
* converts it to a fromat that can be used by the trace viewer application
* Acknowledgement:
* This code was contributed by Tim Bardzil <bardzil@colorado.edu>.
* This code was completed as part of a class project in TLEN 5843
* Singaling Protocols, taught by Professor Douglas C. Sicker, Ph.D. at
* the University of Colorado, Boulder.
*
*@author Tim Bardzil <bardzil@colorado.edu> (original)
*@author M. Ranganathan (ported to 1.2)
*Jeff Adams submitted a patch for this file.
*
*/
public class SniffMessage implements ParseExceptionListener {
String time;
String sourceIP;
String destIP;
SIPMessage sipMessage;
public SniffMessage() {
}
public SniffMessage(ArrayList sniffMsgList) throws ParseException {
getTime(sniffMsgList);
getIPAddresses(sniffMsgList);
getSipMessage(sniffMsgList);
}
private void getTime(ArrayList sniffMsgList) {
Iterator i = sniffMsgList.iterator();
//Date d = new Date(System.currentTimeMillis());
while (i.hasNext()) {
String line = (String) i.next();
if (line.startsWith("Arrival Time")) {
time = line.substring(line.indexOf(":") + 1).trim();
time = time.substring(0, time.length() - 6);
SimpleDateFormat formatter =
new SimpleDateFormat("MMM dd',' yyyy hh:mm:ss.SSS");
ParsePosition pos = new ParsePosition(0);
Date d = formatter.parse(time, pos);
time = String.valueOf(d.getTime());
break;
}
}
}
private void getIPAddresses(ArrayList sniffMsgList) {
Iterator i = sniffMsgList.iterator();
while (i.hasNext()) {
String line = (String) i.next();
if (line.startsWith("Internet Protocol")) {
StringTokenizer st = new StringTokenizer(line, ",");
while (st.hasMoreTokens()) {
String temp = st.nextToken().trim();
if (temp.startsWith("Src Addr:")) {
StringTokenizer st2 = new StringTokenizer(temp, ":");
st2.nextToken(); //skip Src Addr:
sourceIP = st2.nextToken().trim();
}
if (temp.startsWith("Dst Addr:")) {
StringTokenizer st2 = new StringTokenizer(temp, ":");
st2.nextToken(); //skip Src Addr:
destIP = st2.nextToken().trim();
}
}
break;
}
}
}
private int indexOfSDP(ArrayList sniffMsgList) {
Iterator i = sniffMsgList.iterator();
while (i.hasNext()) {
String line = (String) i.next();
if (line.startsWith("Session Description Protocol")) {
return sniffMsgList.indexOf(line);
}
}
return sniffMsgList.size();
}
private int indexOfSIP(ArrayList sniffMsgList) {
Iterator i = sniffMsgList.iterator();
while (i.hasNext()) {
String line = (String) i.next();
if (line.startsWith("Session Initiation Protocol")) {
return sniffMsgList.indexOf(line);
}
}
return sniffMsgList.size();
}
private void getSipMessage(ArrayList sniffMsgList) throws ParseException {
int sipIndex = indexOfSIP(sniffMsgList);
int sdpIndex = indexOfSDP(sniffMsgList);
String msgBuffer = new String();
//get SIP message
for (int i = sipIndex + 1; i < sdpIndex; i++) {
String line = (String) sniffMsgList.get(i);
if (line.startsWith("Request-Line")
|| line.startsWith("Status-Line")) {
msgBuffer =
msgBuffer
+ line.substring(line.indexOf(":") + 1).trim()
+ "\r\n";
} else if (line.startsWith("Message Header")) {
//do nothing
} else if (line.startsWith("Message body")) {
//do nothing (start of SDP)
} else {
msgBuffer = msgBuffer + line.trim() + "\r\n";
}
}
msgBuffer = msgBuffer + "\r\n";
//get SDP if it exsits
for (int j = sdpIndex; j < sniffMsgList.size(); j++) {
String line = (String) sniffMsgList.get(j);
if (line.indexOf("(") > 0 && line.indexOf(")") > 0) {
msgBuffer =
msgBuffer
+ line.charAt(line.indexOf(":") - 2)
+ "="
+ line.substring(line.indexOf(":") + 1).trim()
+ "\r\n";
}
}
//parse SIP message
StringMsgParser parser = new StringMsgParser();
sipMessage = parser.parseSIPMessage(msgBuffer.getBytes(), true, false, new SniffMessage());
}
public String getCallID() {
return sipMessage.getCallId().getCallId();
}
public String toXML() {
String xmlMessage = new String();
String message = sipMessage.encode();
String statusMessage = "";
String firstLine = new String();
if (sipMessage.getClass().isInstance(new SIPRequest())) {
SIPRequest sipReq = (SIPRequest) sipMessage;
firstLine = sipReq.getRequestLine().encode().trim();
} else if (sipMessage.getClass().isInstance(new SIPResponse())) {
SIPResponse sipRes = (SIPResponse) sipMessage;
firstLine = sipRes.getStatusLine().encode().trim();
}
xmlMessage += "<message from=\""
+ sourceIP
+ "\" to=\""
+ destIP
+ "\" time=\""
+ time
+ "\" isSender=\""
+ true
+ "\" callId=\""
+ sipMessage.getCallId().getCallId()
+ "\" statusMessage=\""
+ statusMessage
+ "\" transactionId=\""
+ sipMessage.getTransactionId()
+ "\" firstLine=\""
+ firstLine
+ "\">\n";
xmlMessage += "<![CDATA[";
xmlMessage += message;
xmlMessage += "]]>\n";
xmlMessage += "</message>\n";
return xmlMessage;
}
public void handleException(
ParseException ex,
SIPMessage sipMessage,
Class headerClass,
String headerText,
String messageText)
throws ParseException {
System.out.println("Error line = " + headerText);
try {
if (headerClass
.equals(Class.forName("gov.nist.javax.sip.header.From"))
|| headerClass.equals(
Class.forName("gov.nist.javax.sip.header.To"))
|| headerClass.equals(
Class.forName("gov.nist.javax.sip.header.ViaList"))
|| headerClass.equals(
Class.forName("gov.nist.javax.sip.header.CSeq"))
|| headerClass.equals(
Class.forName("gov.nist.javax.sip.header.CallId")))
throw ex;
} catch (ClassNotFoundException e) {
System.out.println("could not find class -- internal error");
e.printStackTrace();
System.exit(0);
}
}
}