mod_proxy_hcheck: add some hyperlinks, improve syntax highlight, add some missing trailing dot, be more consistent with other modules in the way 'Syntax' lines are displayed

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In 'ap_proxy_cookie_reverse_map', iterate over each token of the 'Set-Cookie' header field in order to avoid updating the wrong one.

This could happen if the header field has something like 'fakepath=foo;path=bar". In this case fakepath would be updated instead of path.


We don't need regex anymore in order to parse the field values and 'ap_proxy_strmatch_domain' and 'ap_proxy_strmatch_path' are now useless. (and should be axed IMHO)

PR 61560

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See PR 60086.

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See PR 60086.

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/!\   This commit is _NOT COMPILE TESTED_. (I don't have a windows build environment available)
 
See PR 60086.

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                 ap_send_error_response

While debugging PR 61860 I found a chain of events
that leads to duplicate headers in the HTTP response
if Header always set is used in the httpd's config.

As far as can understand, mod_headers uses err_headers_out
when dealing with the 'always' setting, since it is expected
to be preserved even on error. The current code seems
to correctly preserve the important headers like Location
(happening before the bit of code that changed), but then
it swaps headers_out with err_headers_out and clears
err_headers_out. My understanding is that this will cause
mod_headers, if called again, to re-insert the headers
set via 'always' again in err_headers_out, leading to a
duplication in the response. So far I managed to reproduce this
only with the specific use case outlined by the PR, but
there might be more.

r1831585 was added to the test suite for PR 61860,
(marked as TODO), and now it seems to pass as expected.

Since thi...

  actually done?


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  so repeated "make check" still works.


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dummy install root at $builddir/check.

* Makefile.in (check-binaries): New target.
  (check/bin/apxs): Moved target inside check/bin.
  (check/build/config_vars.mk): Override bindir as well.
  (check): Use apxs at new location.


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Otherwise, when BalancerPersist is enabled, we might fail (re)starting with a
saved slotmem if a BalancerMember was renamed (e.g. PR 62308's port change).
This is because the renamed member is considered a new one, while the old name
still reserves a slot, so we end up missing one room. The overall number of
members does not change so the sizes check succeeds thus the persisted slotmem
is not invalidated. Yet the slomem is not really compatible.

By clearing inuse flags, we still allow for slots to be reused if their index
did not change (thanks to ap_proxy_find_balancershm() and slotmem_fgrab() at
the given index), but will also invalidate renamed slots which don't match the
index. We now have the correct behaviour by slot and the server (re)starts in
any case.



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Since persistent files are also reused on stop/start, we must ensure that
they match the same descriptor when reused on the next startup, so add it
to integrity metadata.

Also, the descriptor being the first field in the SHM, we don't need to
copy on the stack it in several places, and can handle it as a pointer.



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Don't try to attach SHMs on startup, they might be from a previous crash and
prevent the server to start (on failure to reuse it).

On mpm_winnt though, the pre/post_config() phases are re-run in child process,
and the parent process already created the SMs, so they must be attached there.



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This effectively restores r1822341 which was reverted by r1822505.



git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1831869 13f79535-47bb-0310-9956-ffa450edef68

Will restart from there to really fix PR 62308 (and PR 62044 still).

This effectively reverts:
- r1831394,
- r1830800,
- r1826970,
- r1826845,
- r1823572,
- r1823416,
- r1823415,
- r1823412,
- r1822511,
- r1822509.



git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1831868 13f79535-47bb-0310-9956-ffa450edef68

by CodeingBoy <codeingboy gmail.com>.

Note that zh-tw is not a native translation; each translation aught
be reviewed by a native reader before backporting to 2.4.x branch.



git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1831800 13f79535-47bb-0310-9956-ffa450edef68

Submitted By: Hank Ibell <hwibell gmail.com>
Committed By: covener




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... to include r->args and get otherwise get as close to possible to
what came in over the wire.

Submitted By: Hank Ibell <hwibell gmail.com>
Committed By: covener




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r1831394 is the right follow to r1830800 to preserve "inherited" slotmems in
children processes.

While at it, comment on the expectations from mod_proxy_balancer w.r.t.
slotmem_attach() implementations, and eventually how we could improve the API
later (w/o backporting to 2.4.x).



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The caller might (and actually balancer_child_init() does) rely on
slotmem_attach() to not mangle the passed in/out slotmem pointer on
failure.



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Don't call slotmem_attach() if the slot is already initialized/reused, that
used to work previously because the returned error status is ignored, but
r1830800 changed the function to forcibly reset the returned slot pointer to
NULL first.

There is no point to call slotmem_attach() in this case, the slot is already
initialized because it's either inherited/fork()ed on Unixes, or on Windows
the attachment happened in post_config/slotmem_create() already.

One case where slotmem_attach() would fail is when balancers are defined
globally (main server) and some virtualhosts don't have/use any mod_proxy
configuration/directive. In this case their proxy server config is a pointer
copy of the main server thus their slots are already initialized in both
post_config and child_init hooks. While the case was already handled in
the balancer_post_config(), it did not in balancer_child_init() where we
relied on slotmem_attach() to be a noop.



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  logno. Free EVP_PKEY in engine case.  Never try reading ECDH/DH
  parameters from engine ids.


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I had to disable -Werror in maintainer mode for this file in darwin :/



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engine.

* modules/ssl/ssl_util.c (modssl_is_engine_id): Renamed
  from modssl_is_engine_key.
  
* modules/ssl/ssl_engine_config.c (ssl_cmd_SSLCertificateKeyFile):
  Adjust accordingly.
  (ssl_cmd_SSLCertificateFile): Also allow ENGINE cert ids.

* modules/ssl/ssl_engine_pphrase.c (modssl_load_engine_keypair):
  Rename from modssl_load_engine_key; load certificate if
  cert id is passed.

* modules/ssl/ssl_engine_init.c (ssl_init_server_certs): Optionally
  load the certificate from the engine as well.

* docs/manual/: Update manual.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1831168 13f79535-47bb-0310-9956-ffa450edef68

related to PR60296 investigation

RMM corruption is really nasty, so abort on locking failures.





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Use apr_pstrmemdup instead of apr_pstrndup when possible.

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