mod_proxy_html: Fix variable interpolation and memory allocation failure in ProxyHTMLURLMap.

Proposed by: Ewald Dieterich <ewald mailbox.org>
Reviewed by: ylavic


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


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 *) mod_ssl: fix a potential NULL dereference spotted by gcc 8.1.0
    mod_http2: silence gcc strncpy warnings which break compilation in
               maintainer mode with gcc 8.1.0
    trunk patch: http://svn.apache.org/r1831231
                 http://svn.apache.org/r1831591
                 http://svn.apache.org/r1832934
                 http://svn.apache.org/r1832937
    2.4.x patch: svn merge -c 1831231,1831591,1832934,1832937 ^/httpd/httpd/trunk .
    +1: ylavic, icing, jailletc36 (by inspection)

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mod_remoteip: Fix RemoteIP{Trusted,Internal}ProxyList loading broken by 2.4.30.

Overwriting server config in pre_config hook breaks EXEC_ON_READ directives,
it's automatically created on purpose anyway.

PR 62220.


Follow up to r1832580: correct CHANGES entry.
Submitted by: ylavic
Reviewed by: ylavic, wrowe, jim


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mod_remoteip: Set useragent port to zero PR59931

When overriding the useragent address from X-Forwarded-For,
zero out what had been initialized as the connection-level port.  

Submitted By: Hank Ibell <hwibell gmail.com>
Reviewed by: ylavic, covener, icing


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mpm_unix(es): cleanup properly on exit in one_process mode.

We can't destroy ap_pglobal in the MPMs because clean_child_exit() runs in
a DSO which would be unloaded under us.

So we defer an ap_terminate() with atexit() in ap_unixd_mpm_set_signals(),
all this is static/builtin code in "os/unix/unixd.c".


Follow up to r1822537: replace static variable with pool userdata.

Also adds a comment and a CHANGES entry.


Submitted by: ylavic
Reviewed by: ylavic, jim, icing


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cmake:
   add modules/http2 to includes

legacy:
    add mod_http2.h to install now that mod_proxy.h includes it



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needs mod_http2.h


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add an <IfFile> config section like <IfDefine>

It allows a non httpd config file to be used as a marker directly in
httpd.conf without hiding logic in a script in front of apachectl
to do test -f and pass extra -D's.

This is something we've had in IBM's httpd distro for a little bit and
hadn't remembered to share. I've seen some questions/config files come
up in a few places lately that would benefit from this as an option.

Remove duplicate implementations of conditional section function.  No
functional change.

* server/core.c (start_cond_section): Factor out from start_if*.
  Adjust to use apr_strmemdup.
  (test_ifmod_section, test_iffile_section, test_ifdefine_section):
  Move container-specific tests into callbacks from start_if*.
  (core_cmds): Adjust <IfFile, <IfDefine, <IfModule to use
  start_cond_section with callbacks.

Add <IfDirective> and <IfSection>:

* server/core.c
  (test_ifdirective_section, test_ifsection_section): New callbacks.
  (core_cmds): Define new directives.

* include/http_config.h, server/config.c (ap_exists_directive):
  New function.

* include/ap_mmn.h: Bump MMN minor for above.

* docs/manual/mod/core.xml: Add docs.

* server/core.c (start_cond_section): Comment & variable name fixes,
  no functional change.

Submitted by: covener, jorton
Reviewed by: jorton, ylavic, covener


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mod_proxy_balancer: Add hot spare member type and corresponding flag (R). Hot spare members are
used as drop-in replacements for unusable workers in the same load balancer set. This differs
from hot standbys which are only used when all workers in a set are unusable. PR 61140.


mod_proxy_balancer: follow up to r1828890: indentation and 80 col.


Submitted by: jhriggs, ylavic
Reviewed by: jhriggs, jim, ylavic


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