mod_jserv/4944: Parsing date header from servlet request

[Frank Gosdschan <fr...@db.com>]

>Number:         4944
>Category:       mod_jserv
>Synopsis:       Parsing date header from servlet request
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    jserv
>State:          open
>Class:          sw-bug
>Submitter-Id:   apache
>Arrival-Date:   Wed Sep  1 05:20:00 PDT 1999
>Last-Modified:
>Originator:     frank.gosdschan@db.com
>Organization:
apache
>Release:        Apache 1.3.3, JServ 0.9.11
>Environment:
AIX, JDK 1.1.6
>Description:
If the browser sends a date header "If-Modified-Since" the
SimpleDateFormat.parse(String) function throws a
StringIndexOutOfBoundsException which is not catched in
JServConnection.getDateHeader(String). Maybe it is a problem of Java 1.1.6
The result is an internal server error 500.

xxxxxxxxxxxxxxxxxxxxxxxxx name = If-Modified-Since
xxxxxxxxxxxxxxxxxxxxxxxxx val = Tue, 31 Aug 1999 15:32:49 GMT
xxxxxxxxxxxxxxxxxxxxxxxxx 0
[31/08/1999 17:41:53 CEST]: Sending response headers.
[31/08/1999 17:41:53 CEST]: java.lang.StringIndexOutOfBoundsException: String index out of range: 29: String index out of range: 29
java.lang.StringIndexOutOfBoundsException: String index out of range: 29
	at java.lang.String.charAt(Compiled Code)
	at java.text.SimpleDateFormat.subParse(Compiled Code)
	at java.text.SimpleDateFormat.parse(Compiled Code)
	at java.text.DateFormat.parse(Compiled Code)
	at org.apache.jserv.JServConnection.getDateHeader(Compiled Code)
	at javax.servlet.http.HttpServlet.service(Compiled Code)
	at javax.servlet.http.HttpServlet.service(Compiled Code)
	at org.apache.jserv.JServConnection.run(Compiled Code)
>How-To-Repeat:

>Fix:

>Audit-Trail:
>Unformatted:
[In order for any reply to be added to the PR database, you need]
[to include <ap...@Apache.Org> in the Cc line and make sure the]
[subject line starts with the report component and number, with ]
[or without any 'Re:' prefixes (such as "general/1098:" or      ]
["Re: general/1098:").  If the subject doesn't match this       ]
[pattern, your message will be misfiled and ignored.  The       ]
["apbugs" address is not added to the Cc line of messages from  ]
[the database automatically because of the potential for mail   ]
[loops.  If you do not include this Cc, your reply may be ig-   ]
[nored unless you are responding to an explicit request from a  ]
[developer.  Reply only with text; DO NOT SEND ATTACHMENTS!     ]