more hints for OCSP Stapling:

* when a different cache mechanism is used...
* testing that your server sends an OCSP response


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mod_substitute: no real functional change, but:
  - define default for maximum line length
    indepenent of MAX_STRING_LEN
  - Clarify line length check with a comment
  - add supported 'b' suffix to directive
    description

Submitted by: rjung
Reviewed by: jim, ylavic


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Remove commented-out SSLStaplingForceURL at global scope.

Global or not, its use is specialized and those that need it won't need a sample,
and others may be confused.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1634737 13f79535-47bb-0310-9956-ffa450edef68

Move OCSP stapling information from a per-certificate store
(ex_data attached to an X509 *) to a per-server hash which is
allocated from the pconf pool. Fixes PR 54357, PR 56919 and
a leak with the certinfo_free cleanup function (missing
OCSP_CERTID_free).

* modules/ssl/ssl_util_stapling.c: drop certinfo_free, and add
  ssl_stapling_certid_free (used with apr_pool_cleanup_register).
  Switch to a stapling_certinfo hash which is keyed by the SHA-1
  digest of the certificate's DER encoding, rework ssl_stapling_init_cert
  to only store info once per certificate (allocated from the pconf
  to the extent possible) and extend the logging.

* modules/ssl/ssl_private.h: adjust prototype for
  ssl_stapling_init_cert, replace ssl_stapling_ex_init with
  ssl_stapling_certinfo_hash_init

* modules/ssl/ssl_engine_init.c: adjust ssl_stapling_* calls

Based on initial work by Alex Bligh <alex alex.org.uk>


Follow up to r1629372: ensure compatibily with OpenSSL < 1.0 (sk_OPENSSL_STRING_value).

Follow up to r1629372 and r1629485: ensure compatibily with OpenSSL < 1.0 (sk_OPENSSL_STRING_[num|value|pop] macros).
Submitted by: kbrand, ylavic, ylavic
Reviewed/backported by: jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1634529 13f79535-47bb-0310-9956-ffa450edef68

mod_cache_socache: Change average object size
hint from 32 bytes to 2048 bytes.

Submitted by: rjung
Reviewed/backported by: jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1634528 13f79535-47bb-0310-9956-ffa450edef68

mod_cache_socache: Add cache status to server-status.

The status_hook simply calls the status function of
socache, very much like mod_ssl does for the ssl
session cache.


Silence build warning about missing prototype.
Followup to r1629507.

Submitted by: rjung
Reviewed/backported by: jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1634527 13f79535-47bb-0310-9956-ffa450edef68

event: Fix worker-listener deadlock in graceful restart caused by get_worker()
allocating new worker after ap_queue_info_term(), but not setting the
have_idle_worker variable. PR 56960.

Submitted By: Zin UDA
Committed By: jkaluza

Submitted by: jkaluza
Reviewed/backported by: jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1634526 13f79535-47bb-0310-9956-ffa450edef68

Concat string at compile time when possible.
Doing so, sometimes also give the opportunity to turn a 'ap_fputstrs' into a 'ap_fputs'.
PR 53741
Submitted by: jailletc36
Reviewed/backported by: jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1634525 13f79535-47bb-0310-9956-ffa450edef68

mod_substitute: Restrict configuration in .htaccess to
FileInfo as documented.

Submitted by: rjung
Reviewed/backported by: jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1634524 13f79535-47bb-0310-9956-ffa450edef68

mod_substitute: Make maximum line length configurable.


Add docs for new directive SubstituteMaxLineLength
in mod_substitute.

Submitted by: rjung
Reviewed/backported by: jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1634523 13f79535-47bb-0310-9956-ffa450edef68

mod_substitute: Fix memory limitation in case of
regexp plus flatten.

The maxlen argument of ap_varbuf_regsub() is unsigned.
Passing in "AP_SUBST_MAX_LINE_LENGTH - vb.strlen"
in case vb.strlen got to big didn't result in the
expected error but instead was handled as a very big
maxlen.


Add CHANGES for r1628104.
(mod_substitue: Fix memory limitation in case of
regexp plus flatten.)

Submitted by: rjung
Reviewed/backported by: jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1634522 13f79535-47bb-0310-9956-ffa450edef68

add OCSP Stapling configuration, disabled by default
Submitted by: trawick
Reviewed/backported by: jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1634521 13f79535-47bb-0310-9956-ffa450edef68

PR53218
Allow for longer worker names and make truncation a non-fatal
error... 


Correct loglevel.


oops... prepend 0

Reviewed/backported by: jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1634520 13f79535-47bb-0310-9956-ffa450edef68

mod_dav: set r->status_line in dav_error_response.
It's used as argument in next ap_rvputs call. PR 55426.

Submitted by: jkaluza
Reviewed/backported by: jim


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* Add how-to guide for OCSP Stapling
* add hint on discovering that OCSP Stapling cache is too small
* trying to enable OCSP Stapling without certificate chain

(and add 2.4.x-specific hint about the path on the cache)


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mod_proxy_http: Avoid (unlikely) access to freed memory.

Submitted by: ylavic
Reviewed by: ylavic, jorton, rjung
Backported by: jailletc36

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1632736 13f79535-47bb-0310-9956-ffa450edef68

http_protocol: fix logic in ap_method_list_(add|remove) in order:
       - to correctly reset bits
       - not to modify the 'method_mask' bitfield unnecessarily

Submitted by: jailletc36
Reviewed by: jailletc36, ylavic, rjung
Backported by: jailletc36

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1632440 13f79535-47bb-0310-9956-ffa450edef68

mod_slotmem: Increase log level for some originally debug messages.

Submitted by: jim
Reviewed by: jim, ylavic, rjung
Backported by: jailletc36

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1632437 13f79535-47bb-0310-9956-ffa450edef68

due to review of backport proposal by Christophe.


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