https://bz.apache.org/bugzilla/show_bug.cgi?id=69731
naozumi.taromaru...@nttdata.com changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |REOPENED
Resolution|INVALID |---
--- Comment #2 from naozumi.taromaru...@nttdata.com ---
> Parts parameters also count in the regular parameters count, this is as
> expected.
I knew that.
> So they count in the maxPartCount and also in the maxParameterCount.
I knew that.
> I don't see how they are double counted.
Please see "Possible cause code" at the Description.
When there is(are) multipart text parameter(s),
1. parameters.addParameter(name, value); is executed.
and
2. limit property of parameters is decremented.
(For multipart file parameters, "1" is not performed, so "2" must be performed,
but for multipart text parameters, "1" is performed, so "2" must not be
performed.)
Here are some examples:
Fixed conditions:
* servlet: see the Description. (execute req.getParameter(name) after
req.getParts())
* query param: ?text=aaa (one parameter)
* multipart file params count: 0
When multipart text params count: 4
(total parameter count is 5)
maxParameterCount="8"(at server.xml) ... result: text=null
maxParameterCount="9"(at server.xml) ... result: text=aaa
(These are the conditions and results at the Description.)
When multipart text params count: 5
(total parameter count is 6)
maxParameterCount="10"(at server.xml) ... result: text=null
maxParameterCount="11"(at server.xml) ... result: text=aaa
When multipart text params count: 6
(total parameter count is 7)
maxParameterCount="12"(at server.xml) ... result: text=null
maxParameterCount="13"(at server.xml) ... result: text=aaa
* Even if "total parameter count" less than(or equal) maxParameterCount, query
parameters will not be available.
For reference, the behavior when the workaround is implemented is described
below.
Workaround (Additional condition):
Execute req.getParameter(name) before request.getParts().
eg., Add org.apache.catalina.filters.FailedRequestFilter at web.xml.
When multipart text params count: 4
(total parameter count is 5)
maxParameterCount="4"(at server.xml) ... result: 500 error
maxParameterCount="5"(at server.xml) ... result: text=aaa
When multipart text params count: 5
(total parameter count is 6)
maxParameterCount="5"(at server.xml) ... result: 500 error
maxParameterCount="6"(at server.xml) ... result: text=aaa
When multipart text params count: 6
(total parameter count is 7)
maxParameterCount="6"(at server.xml) ... result: 500 error
maxParameterCount="7"(at server.xml) ... result: text=aaa
* These are counted correctly.
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