DO NOT REPLY [Bug 7013] New: - Entering a servlet path with non-ISO8859-1 characters sends Tomcat into a death spiral

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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=7013

Entering a servlet path with non-ISO8859-1 characters sends Tomcat into a death spiral

           Summary: Entering a servlet path with non-ISO8859-1 characters
                    sends Tomcat into a death spiral
           Product: Tomcat 3
           Version: 3.2.3 Final
          Platform: PC
               URL: http://kgs.kiseido.com/jsp/en_US/graphPage.jsp
        OS/Version: Linux
            Status: NEW
          Severity: Critical
          Priority: Other
         Component: Unknown
        AssignedTo: tomcat-dev@jakarta.apache.org
        ReportedBy: wms@igoweb.org


My JSP server has one page that takes an input field, and plugs that input field
into the path information of a servlet. This works great, but when somebody
enters a non-ISO8859-1 character in the field, Tomcat goes into an infinite
loop, eventually runs out of memory and dies. Here's the error log:

2002-03-10 05:53:26 - Ctx( /jsp ): IOException in: R( /jsp + /servlet/graph +
/,?,?,?E?Es-ja_JP.png) Bogus path info "/,?,?,?E?Es-ja_JP.png"
2002-03-10 05:53:26 - Ctx( /jsp ): IOException in: R( /jsp + /servlet/graph +
/,?,?,?E?Es-ja_JP.png) Not an ISO 8859_1 character:?
2002-03-10 05:53:26 - Ctx( /jsp ): IOException in: R( /jsp + /servlet/graph +
/,?2002-03-10 06:03:10 - Ctx( /jsp ): IOException in: R( /jsp + /servlet/graph +
/,?,?,?E?Es-ja_JP.png) Not an ISO 8859_1 character:?
2002-03-10 06:03:19 - Ctx( /jsp ): Exception in: R( /jsp + /servlet/graph +
/,?,?,?E?Es-ja_JP.png) - java.lang.OutOfMemoryError

... thousands of identical copies of above error follow ...

2002-03-10 06:03:19 - Ctx( /jsp ): IOException in: R( /jsp + /servlet/graph +
/,?,?,?E?Es-ja_JP.png) Not an ISO 8859_1 character:?
2002-03-10 06:03:30 - Ctx( /jsp ): Exception in: R( /jsp + /servlet/graph +
/,?,?,?E?Es-ja_JP.png) - java.lang.OutOfMemoryError
,?,?E?Es-ja_JP.png) Not an ISO 8859_1 character:?
2002-03-10 05:53:26 - Ctx( /jsp ): IOException in: R( /jsp + /servlet/graph +
/,?,?,?E?Es-ja_JP.png) Not an ISO 8859_1 character:?

As you can see, even after the out of memory error tomcat stays in this
unstoppable loop. One time that this happened the JVM crashed, another time
everything just hung and I had to kill it myself.

This is using Sun's java 1.4 JVM and Tomcat 3.2.4 (I know I put in 3.2.3 in the
form, but 3.2.4 wasn't an option). I don't see a way I can work around this
because it seems to happen before my servlet is even called...in other words, as
soon as somebody tries again to type an unacceptable character, *boom* my JSP
engine will die again until I go in and repair. Anybody know a quick fix for it?
Thanks.

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