core: Optimize string concatenation in expression
parser when evaluating a string expression.

We have a relatively small recursion limit of
about 10 operations. This is a compilation
limit (a define). It can be hit if many expr
vars or function calls are concatenated in an
expression that is evaluated as a string not as
a boolean.

The new optimization uses iteration instead of
recursion and is very similar to the
existing one, which optimizes consecutive
concatenations in node2 of the tree. The new
one optimizes consecutive concatenations in
node 1.

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


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   * acinclude.m4: Generate #LoadModule directive in default httpd.conf for
                   every --enable-mpms-shared. PR 53882.

Submitted by: olli hauer <ohauer gmx.de>, Yann Ylavic
Reviewed by: ylavic, rjung, jailletc36
Backported by: jailletc36

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as in r1517366, drop the severity in authz_groupfile when a require
didn't match but no real error was encountered. 

This individual 'require group' may not really dictate who gets in. PR55523 




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   * mod_authn_dbd: Precedence issue. Fix the error message logged in case of
     error while querying the database.

Submitted by: jailletc36
Reviewed by: jailletc36, mrumph, minfrin
Backported by: jailletc36

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Fix --enable-v4-mapped configuration on *BSD. PR 53824.
Submitted by: olli hauer <ohauer gmx.de>
Committed by: ylavic

Submitted by: ylavic
Reviewed/backported by: jim


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internationalization.

Backports: r1611169
Reviewed by: wrowe, gsmith



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mod_ssl: Add SSLSessionTickets (on|off).
It controls the use of TLS session tickets (RFC 5077).
Default is unchanged (on).
Using session tickets without restarting the web server with
an appropriate frequency (e.g. daily) compromises perfect forward
secrecy. As long as we do not have a nice key management
there needs to be a way to deactivate the use of session tickets.

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


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1652074 13f79535-47bb-0310-9956-ffa450edef68

remove bad merge from CHANGES in r1651656



git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1651856 13f79535-47bb-0310-9956-ffa450edef68

provide alternative PATH_INFO calculation options for proxy_fcgi.
PR 55329




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     trunk patch: http://svn.apache.org/r1588544 (rewrite+UDS)
                  http://svn.apache.org/r1641636 ('using default worker' msg tweak)
                  http://svn.apache.org/r1647005 (tcp reuse)
                  http://svn.apache.org/r1647009 (uds reuse)
                  http://svn.apache.org/r1647334 (uds reuse fix)


    + 1 additional de_socketfy call in mod_proxy





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tweak SCRIPT_FILENAME passed to fastcgi backends when a balancer is used.



save some bytes per Christophe's review.




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Update conn_rec.id when a new thread begins working on a connection, because
the old thread may work on a new connection and assign the same ID in parallel.


Submitted By:  Michael Thorpe
Committed By: covener



git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1651656 13f79535-47bb-0310-9956-ffa450edef68

Configuration files with long lines and continuation characters
are not read properly. PR 55910. 

Submitted By: Manuel Mausz <manuel-as mausz.at>
Committed By: covener




git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1651653 13f79535-47bb-0310-9956-ffa450edef68

Be consistant with the code below which accepts lower or upper case.

Add CHANGE for r1649632
Submitted by: jailletc36
Reviewed/backported by: jim


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split-logfile: Fix perl error:  'Can't use string ("example.org:80") 
  as a symbol ref while "strict refs"'. PR 56329.

Submitted By: Holger Mauermann <mauermann gmail.com>
Committed By: covener



Submitted by: covener
Reviewed/backported by: jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1651095 13f79535-47bb-0310-9956-ffa450edef68

PR 56603:  Inappropiate ProxyPassReverse match when interpolated URL 
is empty string 

Submitted By: <ajprout hotmail.com>
Committed By: covener


Submitted by: covener
Reviewed/backported by: jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1651094 13f79535-47bb-0310-9956-ffa450edef68

* core: Fix -D[efined] or <Define>[d] variables lifetime accross restarts. 
        PR 57328.

Submitted-by: Armin Abfalterer <a.abfalterer gmail.com>
Reviewed/Committed-by: ylavic

Submitted by: ylavic
Reviewed/backported by: jim


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* core: Fix -D[efined] or <Define>[d] variables lifetime accross restarts. 
        PR 57328.

Submitted-by: Armin Abfalterer <a.abfalterer gmail.com>
Reviewed/Committed-by: ylavic

Submitted by: ylavic
Reviewed/backported by: jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1651083 13f79535-47bb-0310-9956-ffa450edef68

mod_proxy: Preserve original request headers even if they differ
           from the ones to be forwarded to the backend. PR 45387.

Submitted by: ylavic
Reviewed/backported by: jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1651082 13f79535-47bb-0310-9956-ffa450edef68

Fix computation of the size of 'struct sockaddr_un' when passed to 'connect()'.
Use the same logic as the one in ' in 'proxy_util.c'.


mod_proxy: Don't limit the size of the connectable Unix Domain Socket paths.
Since connect() to UDS path is used at several places, introduce
ap_proxy_connect_uds() in proxy_util.

Submitted by: jailletc36, ylavic
Reviewed/backported by: jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1651081 13f79535-47bb-0310-9956-ffa450edef68

mod_proxy: Shutdown (eg. SSL close notify) the backend connection
before closing.


mod_proxy: follow up to r1601291.

Since deferred_write_pool is needed by the core_output_filter and is a subpool
of the connection, shutdown in a pre_cleanup of the connection's pool to avoid
a freed memory access (SEGV).

Reported By: takashi

Submitted by: ylavic
Reviewed/backported by: jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1651080 13f79535-47bb-0310-9956-ffa450edef68

mod_ssl: dump SSL IO/state for the write side of the connection(s), like reads.


mod_ssl: follow up to r1601919.
Likewise when set from SNI callback.
Submitted by: ylavic
Reviewed/backported by: jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1651078 13f79535-47bb-0310-9956-ffa450edef68

mod_ssl: Ensure that the SSL close notify alert is flushed to the client.
         PR54998.

Submitted By: Tim Kosse <tim.kosse filezilla-project.org>, ylavic
Committed By: ylavic


mod_ssl: SSL_smart_shutdown(): follow up to r1601184.
Use SSL_get_wbio() to comply with OPENSSL_NO_SSL_INTERN.
Stop SSL shutdown loop when flush fails.


mpm_event[opt]: Send the SSL close notify alert when the KeepAliveTimeout
                expires. PR54998.

Submitted by: ylavic
Reviewed/backported by: jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1651077 13f79535-47bb-0310-9956-ffa450edef68

   * mod_proxy_fcgi: Ignore body data from backend for 304 responses. PR 57198.

Submitted by: jkaluza
Reviewed by: jkaluza, ylavic, covener
Backported by: jailletc36

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1650677 13f79535-47bb-0310-9956-ffa450edef68

   * mod_ssl: Check if we are having an SSL connection before looking up SSL
              related variables during expression evaluation to avoid a crash.
              If not return NULL as ssl_var_lookup_ssl does by default.  PR 57070

Submitted by: rpluem
Reviewed by: jailletc36, ylavic, covener
Backported by: jailletc36

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1650659 13f79535-47bb-0310-9956-ffa450edef68

   * mod_proxy_ajp: Fix handling of the default port (8009) in the
     ProxyPass and <Proxy> configurations.  PR 57259.

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

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mod_ssl: Fix recognition of OCSP stapling responses that are encoded
         improperly or too large.

The one byte "ok" flag stored with the response was accounted for in
the wrong condition.


follow up to r1641077: 

one bug was traded for another in r1641077; track the response
length and the cached object length separately to avoid such
confusion

Submitted by: trawick
Reviewed/backported by: jim


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