All of the changes I'd like to introduce below impact one another, and
are based on several basic premises;
1. A sub_req_lookup() caller (of any flavor) should be able to make
heads or tails of the request based on the processing that occurs
within ap_process_request_internal().
2. No handler should die on known 'stuff', e.g. headers, etc, when those
decisions can be made upfront, during the ap_process_request_internal()
cycle. A sub_req call can then choose some alternate resource (such as
going on to the next entry in the list of DirectoryIndex documents).
Dying for reasons we, couldn't determine up-front, such as mis-submitted
POST data, remains always acceptable.
3. Namespace polution is evil. Ergo, any module should reject requests
for a document with path_info if it doesn't address the name space
passed in path_info for the request.
This leads to several individual patches that I'm writing.
. My mod_dir patch which performs the entire internal handling of dirs within
the fixup hook. It has an associated patch to restore autoindexes' correct
behavior {posted 12/2, Message-ID: <021e01c17bab$a9d076c0$93c0b0d0@v505>}
. Patch in HOOK_LAST of ap_run_fixups; punt the *handler to core if the thing is
a file, and the proper path_info conditions exist, and punt no-file to NOTFOUND
and no-handler cases to 500 misconfigured.
. Hooks are _not_ the fastest things in the world, especially with the strcmps
around ->handler going on. If we resolve the ->handler up front, why not
provide a ->handler_fn member that skips the entire handler() hook walk?
. Add DefaultHandler [AcceptPost|RejectPost] [AcceptPathInfo|RejectPathInfo]
The default to both is, Reject. This setting is noted, but not acted upon,
until we hit the HOOK_LAST of fixups.
. php and others may then toggle the setting for Post or PathInfo in their setup
hooks, so they can superceed the user .conf setting or the defaults.
. move ap_run_insert_filter to the run_subreq code, so we get that possibly
expensive hook into the content. Since it can't fail, it doesn't need to sit
up in the lookup logic.
Comments?
Bill
