mod_include's recursion detection

Stas Bekman Thu, 20 Nov 2003 18:15:01 -0800

In one of the tests I've a dynamic response handler whose output is going through INCLUDES, which triggers a sub-request to the same dynamic response handler with different ? arguments or path_info, which repeat it once more.

1) a dynamic response handler /foo sends (/one is path_info):

"one "

2) INCLUDES calls a subrequest on /foo/one which generates

"two "

    3) which again reaches INCLUDES and again generating a sub-request,
       this time on /foo/two

but INCLUDES detects a recursion:

[Thu Nov 20 16:59:31 2003] [error] [client 127.0.0.1] unable to include "/foo/two" in parsed file /home/stas/apache.org/mp-inc-mp/t/htdocs/foo

First of all, there is no /home/stas/apache.org/mp-inc-mp/t/htdocs/foo, it's a virtual dynamic handler and the error is wrong. I don't think mod_include should do the detection at all if the file doesn't exist, because dynamic handler != static file.

Even in the case of static SSI file, I can see where a call to the same file may generate different outputs, and is a wanted behavior and not a recursion.

It's good to detect recursions when they loop through 100 or so self-invocations, but for one call?

__________________________________________________________________
Stas Bekman            JAm_pH ------> Just Another mod_perl Hacker
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mod_include's recursion detection

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