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* modules/mappers/mod_imagemap.c (menu_header): Fix
  cross-site-scripting issue by escaping the URI, and ensure that a
  charset parameter is sent in the content-type to prevent
  autodetection by broken browsers.

Reported by: JPCERT

Backports: r603282
Submitted by: jorton
Reviewed by: rpluem, trawick, wrowe


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* mod_substitute is no longer experimental.

Submitted by: rpluem
Reviewed by: rpluem


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This corrects the error, bringing it in line with 581117
and the vote that was taken on that release.


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mod_substitute: Added a new experimental output filter, which
performs inline response content pattern matching (including
regex) and substitution.

Submitted by: jim
Reviewed by: jim, rpluem, fuankg


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* Apply patch for PR 41056 (19954) to fix chunk
  filter. Now flushes work better.

* Protect against any sort of non-block read that
  would block. If ap_get_brigade() shows that, return
  EAGAIN.

* Further refinement for PR41056 / PR 19954 (mostly-fixed in r480135.)
  We assume that a successful read but an empty brigade
  is NOT cause for EAGAIN. Testing may or may not
  confirm this assumption, in which case that test
  may be required as well.

* If no data is available at this point of time we need to switch into the
  BODY_CHUNK_PART state like we do several lines later in the code in the
  same situation.

* Case statements should go on their own line.  (No functional change.)

* modules/http/http_filters.c
  (ap_http_filter): Put case on its own line.

* Add missing Changelog entry for PR41056 / PR 19954. This was fixed in r480135.

PR: 41056 / 19954
Submitted by: jfclere, jim
Reviewed by: rpluem, jim, jerenkrantz


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* Detabify and make spacing in HTML code the same as before r593816. This
  avoids that the autoindex test (t/modules/autoindex) fails. Adjusting
  the autoindex test would cause it to fail with older versions and would
  make it harder to recognize regressions.

Submitted by: rpluem
Reviewed by: rpluem, jim, fuankg


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right section.


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Prevent 1-byte overflow on 8192 boundary (see PR 43310)


Alternate fix... profiling indicates that the string
termination is completely unneeded and superflous. In
which case, the original allocation size is sufficient
since nothing external worries about a NULL nor
looks for it.

Reviewed by: jim


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* Also set the Vary header if a rewrite condition is true and uses a HTTP
  header, but all remaining rewrite conditions are skipped due to the [OR]
  flag.


* Add the novary flag to RewriteCond in order to prevent the appending
  of HTTP headers used in a rewrite condition to the Vary header of
  the response.

Submitted by: rpluem
Reviewed by: jim


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Add in SeeRequestTail directive, to handle the shortcoming
of only storing 63 bytes of the request, when the requests
are longer than that and only vary towards the end; eg:

   GET /disk1/storage/apache/htdocs/images/image-store1/food/fruits/seeded/apples.jpg
   GET /disk1/storage/apache/htdocs/images/image-store1/food/fruits/seeded/pears.jpg
   GET /disk1/storage/apache/htdocs/images/image-store1/food/fruits/seeded/plums.jpg

Submitted by: jim
Reviewed by: jim, rpluem, niq


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Generate etags consistently across 32-bit and 64-bit platforms:

* modules/http/http_etag.c (etag_uint64_to_hex): Renamed from
etag_ulong_to_hex; take an apr_uint64_t argument.
(ap_make_etag): Adjust to use new function and macro names.
Pass arguments directly to etag_uint64_to_hex without casting
down to unsigned long.

* modules/http/http_etag.c (etag_uint64_to_hex): Fix maximum shift
size, thanks to Ruediger.

PR: 40064
Submitted by: jorton
Reviewed by: rpluem, jim, niq


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