1                                                         -*- coding: utf-8 -*-
2
3Changes with Apache 2.4.9
4
5  *) mod_ssl: Work around a bug in some older versions of OpenSSL that
6     would cause a crash in SSL_get_certificate for servers where the
7     certificate hadn't been sent. [Stephen Henson]
8
9   *) mod_lua: Add a fixups hook that checks if the original request is intended 
10      for LuaMapHandler. This fixes a bug where FallbackResource invalidates the 
11      LuaMapHandler directive in certain cases by changing the URI before the map 
12      handler code executes [Daniel Gruno, Daniel Ferradal <dferradal gmail com>].
13
14Changes with Apache 2.4.8
15
16  *) SECURITY: CVE-2014-0098 (cve.mitre.org)
17     Clean up cookie logging with fewer redundant string parsing passes.
18     Log only cookies with a value assignment. Prevents segfaults when
19     logging truncated cookies.
20     [William Rowe, Ruediger Pluem, Jim Jagielski]
21
22  *) SECURITY: CVE-2013-6438 (cve.mitre.org)
23     mod_dav: Keep track of length of cdata properly when removing
24     leading spaces. Eliminates a potential denial of service from
25     specifically crafted DAV WRITE requests
26     [Amin Tora <Amin.Tora neustar.biz>]
27
28  *) core: Support named groups and backreferences within the LocationMatch,
29     DirectoryMatch, FilesMatch and ProxyMatch directives. (Requires
30     non-ancient PCRE library) [Graham Leggett]
31
32  *) core: draft-ietf-httpbis-p1-messaging-23 corrections regarding
33     TE/CL conflicts. [Yann Ylavic <ylavic.dev gmail com>, Jim Jagielski]
34
35  *) mod_dir: Add DirectoryCheckHandler to allow a 2.2-like behavior, skipping 
36     execution when a handler is already set. PR53929. [Eric Covener]
37
38  *) mod_ssl: Do not perform SNI / Host header comparison in case of a
39     forward proxy request. [Ruediger Pluem]
40
41  *) mod_ssl: Remove the hardcoded algorithm-type dependency for the
42     SSLCertificateFile and SSLCertificateKeyFile directives, to enable
43     future algorithm agility, and deprecate the SSLCertificateChainFile
44     directive (obsoleted by SSLCertificateFile). [Kaspar Brand]
45
46  *) mod_rewrite: Add RewriteOptions InheritDown, InheritDownBefore, 
47     and IgnoreInherit to allow RewriteRules to be pushed from parent scopes
48     to child scopes without explicitly configuring each child scope.
49     PR56153.  [Edward Lu <Chaosed0 gmail com>] 
50
51  *) prefork: Fix long delays when doing a graceful restart.
52     PR 54852 [Jim Jagielski, Arkadiusz Miskiewicz <arekm maven pl>]
53
54  *) FreeBSD: Disable IPv4-mapped listening sockets by default for versions
55     5+ instead of just for FreeBSD 5. PR 53824. [Jeff Trawick]
56
57  *) mod_proxy_wstunnel: Avoid busy loop on client errors, drop message
58     IDs 02445, 02446, and 02448 to TRACE1 from DEBUG. PR 56145.
59     [Joffroy Christen <joffroy.christen solvaxis com>, Eric Covener]
60
61  *) mod_remoteip: Correct the trusted proxy match test. PR 54651.
62     [Yoshinori Ehara <yoshinori ehara gmail com>, Eugene L <eugenel amazon com>]
63
64  *) mod_proxy_fcgi: Fix error message when an unexpected protocol version
65     number is received from the application.  PR 56110.  [Jeff Trawick]
66
67  *) mod_remoteip: Use the correct IP addresses to populate the proxy_ips field.
68     PR 55972. [Mike Rumph]
69
70  *) mod_lua: Update r:setcookie() to accept a table of options and add domain,
71     path and httponly to the list of options available to set.
72     PR 56128 [Edward Lu <Chaosed0 gmail com>, Daniel Gruno]
73     
74  *) mod_lua: Fix r:setcookie() to add, rather than replace,
75     the Set-Cookie header. PR56105
76     [Kevin J Walters <kjw ms com>, Edward Lu <Chaosed0 gmail com>]
77
78  *) mod_lua: Allow for database results to be returned as a hash with 
79     row-name/value pairs instead of just row-number/value. [Daniel Gruno]
80
81  *) mod_rewrite: Add %{CONN_REMOTE_ADDR} as the non-useragent counterpart to
82     %{REMOTE_ADDR}. PR 56094. [Edward Lu <Chaosed0 gmail com>]
83
84  *) WinNT MPM: If ap_run_pre_connection() fails or sets c->aborted, don't
85     save the socket for reuse by the next worker as if it were an 
86     APR_SO_DISCONNECTED socket. Restores 2.2 behavior. [Eric Covener]
87
88  *) mod_dir: Don't search for a DirectoryIndex or DirectorySlash on a URL
89     that was just rewritten by mod_rewrite. PR53929. [Eric Covener]
90
91  *) mod_session: When we have a session we were unable to decode,
92     behave as if there was no session at all. [Thomas Eckert
93     <thomas.r.w.eckert gmail com>]
94
95  *) mod_session: Fix problems interpreting the SessionInclude and
96     SessionExclude configuration. PR 56038. [Erik Pearson
97     <erik adaptations.com>]
98
99  *) mod_authn_core: Allow <AuthnProviderAlias>'es to be seen from auth
100     stanzas under virtual hosts. PR 55622. [Eric Covener]
101
102  *) mod_proxy_fcgi: Use apr_socket_timeout_get instead of hard-coded
103     30 seconds timeout. [Jan Kaluza]
104
105  *) mod_proxy: Added support for unix domain sockets as the
106     backend server endpoint [Jim Jagielski, Blaise Tarr
107     <blaise tarr gmail com>]
108
109  *) build: only search for modules (config*.m4) in known subdirectories, see
110     build/config-stubs. [Stefan Fritsch]
111
112  *) mod_cache_disk: Fix potential hangs on Windows when using mod_cache_disk. 
113     PR 55833. [Eric Covener]
114
115  *) mod_ssl: Add support for OpenSSL configuration commands by introducing
116     the SSLOpenSSLConfCmd directive. [Stephen Henson, Kaspar Brand]
117
118  *) mod_proxy: Remove (never documented) <Proxy ~ wildcard-url> syntax which
119     is equivalent to <ProxyMatch wildcard-url>. [Christophe Jaillet]
120
121  *) mod_authz_user, mod_authz_host, mod_authz_groupfile, mod_authz_dbm,
122     mod_authz_dbd, mod_authnz_ldap: Support the expression parser within the
123     require directives. [Graham Leggett]
124
125  *) mod_proxy_http: Core dumped under high load. PR 50335.
126     [Jan Kaluza <jkaluza redhat.com>]
127
128  *) mod_socache_shmcb.c: Remove arbitrary restriction on shared memory size
129     previously limited to 64MB. [Jens Låås <jelaas gmail.com>]
130
131  *) mod_lua: Use binary copy when dealing with uploads through r:parsebody() 
132     to prevent truncating files. [Daniel Gruno]
133
134Changes with Apache 2.4.7
135
136  *) APR 1.5.0 or later is now required for the event MPM.
137  
138  *) slotmem_shm: Error detection. [Jim Jagielski]
139
140  *) event: Use skiplist data structure. [Jim Jagielski]
141
142  *) event: Fail at startup with message AP02405 if the APR atomic
143     implementation is not compatible with the MPM.  [Jim Jagielski]
144
145  *) mpm_unix: Add ap_mpm_podx_* implementation to avoid code duplication
146     and align w/ trunk. [Jim Jagielski]
147
148  *) Fix potential rejection of valid MaxMemFree and ThreadStackSize
149     directives.  [Mike Rumph <mike.rumph oracle.com>]
150
151  *) mod_proxy_fcgi: Remove 64K limit on encoded length of all envvars.
152     An individual envvar with an encoded length of more than 16K will be
153     omitted.  [Jeff Trawick]
154  
155  *) mod_proxy_fcgi: Handle reading protocol data that is split between
156     packets.  [Jeff Trawick]
157
158  *) mod_ssl: Improve handling of ephemeral DH and ECDH keys by
159     allowing custom parameters to be configured via SSLCertificateFile,
160     and by adding standardized DH parameters for 1024/2048/3072/4096 bits.
161     Unless custom parameters are configured, the standardized parameters
162     are applied based on the certificate's RSA/DSA key size. [Kaspar Brand]
163
164  *) mod_ssl, configure: Require OpenSSL 0.9.8a or later. [Kaspar Brand]
165
166  *) mod_ssl: drop support for export-grade ciphers with ephemeral RSA
167     keys, and unconditionally disable aNULL, eNULL and EXP ciphers
168     (not overridable via SSLCipherSuite). [Kaspar Brand]
169
170  *) mod_proxy: Added support for unix domain sockets as the
171     backend server endpoint [Jim Jagielski, Blaise Tarr
172     <blaise tarr gmail com>]
173
174  *) Add experimental cmake-based build system for Windows.  [Jeff Trawick,
175     Tom Donovan]
176
177  *) event MPM: Fix possible crashes (third party modules accessing c->sbh) 
178     or occasional missed mod_status updates for some keepalive requests 
179     under load. [Eric Covener]
180
181  *) mod_authn_socache: Support optional initialization arguments for
182     socache providers.  [Chris Darroch]
183
184  *) mod_session: Reset the max-age on session save. PR 47476. [Alexey
185     Varlamov <alexey.v.varlamov gmail com>]
186
187  *) mod_session: After parsing the value of the header specified by the
188     SessionHeader directive, remove the value from the response. PR 55279.
189     [Graham Leggett]
190
191  *) mod_headers: Allow for format specifiers in the substitution string
192     when using Header edit. [Daniel Ruggeri]
193
194  *) mod_dav: dav_resource->uri is treated as unencoded. This was an
195     unnecessary ABI changed introduced in 2.4.6. PR 55397.
196
197  *) mod_dav: Don't require lock tokens for COPY source. PR 55306.
198
199  *) core: Don't truncate output when sending is interrupted by a signal,
200     such as from an exiting CGI process. PR 55643. [Jeff Trawick]
201
202  *) WinNT MPM: Exit the child if the parent process crashes or is terminated.
203     [Oracle Corporation]
204
205  *) Windows: Correct failure to discard stderr in some error log
206     configurations.  (Error message AH00093)  [Jeff Trawick]
207
208  *) mod_session_crypto: Allow using exec: calls to obtain session
209     encryption key.  [Daniel Ruggeri]
210
211  *) core: Add missing Reason-Phrase in HTTP response headers.
212     PR 54946. [Rainer Jung]
213
214  *) mod_rewrite: Make rewrite websocket-aware to allow proxying.
215     PR 55598. [Chris Harris <chris.harris kitware com>]
216
217  *) mod_ldap: When looking up sub-groups, use an implicit objectClass=*
218     instead of an explicit cn=* filter. [David Hawes <dhawes vt.edu>]
219
220  *) ab: Add wait time, fix processing time, and output write errors only if
221     they occured. [Christophe Jaillet]
222
223  *) worker MPM: Don't forcibly kill worker threads if the child process is
224     exiting gracefully.  [Oracle Corporation]
225
226  *) core: apachectl -S prints wildcard name-based virtual hosts twice. 
227     PR54948 [Eric Covener]
228
229  *) mod_auth_basic: Add AuthBasicUseDigestAlgorithm directive to
230     allow migration of passwords from digest to basic authentication.
231     [Chris Darroch]
232
233  *) ab: Add a new -l parameter in order not to check the length of the responses.
234     This can be usefull with dynamic pages.
235     PR9945, PR27888, PR42040 [<ccikrs1 cranbrook edu>]
236     
237  *) Suppress formatting of startup messages written to the console when
238     ErrorLogFormat is used.  [Jeff Trawick]
239
240  *) mod_auth_digest: Be more specific when the realm mismatches because the
241     realm has not been specified. [Graham Leggett]
242
243  *) mod_proxy: Add a note in the balancer manager stating whether changes
244     will or will not be persisted and whether settings are inherited.
245     [Daniel Ruggeri, Jim Jagielski]
246
247  *) mod_cache: Avoid a crash with strcmp() when the hostname is not provided.
248     [Graham Leggett]
249
250  *) core: Add util_fcgi.h and associated definitions and support
251     routines for FastCGI, based largely on mod_proxy_fcgi.
252     [Jeff Trawick]
253
254  *) mod_headers: Add 'Header note header-name note-name' for copying a response
255     headers value into a note. [Eric Covener]
256
257  *) mod_headers: Add 'setifempty' command to Header and RequestHeader.
258     [Eric Covener]
259
260  *) mod_logio: new format-specifier %S (sum) which is the sum of received
261     and sent byte counts.
262     PR54015 [Christophe Jaillet]
263
264  *) mod_deflate: Improve error detection when decompressing request bodies
265     with trailing garbage: handle case where trailing bytes are in
266     the same bucket. [Rainer Jung]
267
268  *) mod_authz_groupfile, mod_authz_user: Reduce severity of AH01671 and AH01663
269     from ERROR to DEBUG, since these modules do not know what mod_authz_core
270     is doing with their AUTHZ_DENIED return value. [Eric Covener]
271
272  *) mod_ldap: add TRACE5 for LDAP retries. [Eric Covener]
273
274  *) mod_ldap: retry on an LDAP timeout during authn. [Eric Covener]
275
276  *) mod_ldap: Change "LDAPReferrals off" to actually set the underlying LDAP 
277     SDK option to OFF, and introduce "LDAPReferrals default" to take the SDK 
278     default, sans rebind authentication callback.
279     [Jan Kaluza <kaluze AT redhat.com>]
280
281  *) core: Log a message at TRACE1 when the client aborts a connection.
282     [Eric Covener]
283
284  *) WinNT MPM: Don't crash during child process initialization if the
285     Listen protocol is unrecognized.  [Jeff Trawick]
286
287  *) modules: Fix some compiler warnings. [Guenter Knauf]
288
289  *) Sync 2.4 and trunk
290       - Avoid some memory allocation and work when TRACE1 is not activated
291       - fix typo in include guard
292       - indent
293       - No need to lower the string before removing the path, it is just a waste of time...
294       - Save a few cycles
295     [Christophe Jaillet <christophe.jaillet wanadoo.fr>]
296
297  *) mod_filter: Add "change=no" as a proto-flag to FilterProtocol
298     to remove a providers initial flags set at registration time.
299     [Eric Covener]
300
301  *) core, mod_ssl: Enable the ability for a module to reverse the sense of
302     a poll event from a read to a write or vice versa. This is a step on
303     the way to allow mod_ssl taking full advantage of the event MPM.
304     [Graham Leggett]
305
306  *) Makefile.win: Install proper pcre DLL file during debug build install.
307     PR 55235.  [Ben Reser <ben reser org>]
308
309  *) mod_ldap: Fix a potential memory leak or corruption.  PR 54936.
310     [Zhenbo Xu <zhenbo1987 gmail com>]
311
312  *) ab: Fix potential buffer overflows when processing the T and X
313     command-line options.  PR 55360.
314     [Mike Rumph <mike.rumph oracle.com>]
315
316  *) fcgistarter: Specify SO_REUSEADDR to allow starting a server
317     with old connections in TIME_WAIT.  [Jeff Trawick]
318
319  *) core: Add open_htaccess hook which, in conjunction with dirwalk_stat
320     and post_perdir_config (introduced in 2.4.5), allows mpm-itk to be 
321     used without patches to httpd core. [Stefan Fritsch]
322
323  *) support/htdbm: fix processing of -t command line switch. Regression
324     introduced in 2.4.4
325     PR 55264 [Jo Rhett <jrhett netconsonance com>]
326
327  *) mod_lua: add websocket support via r:wsupgrade, r:wswrite, r:wsread 
328     and r:wsping. [Daniel Gruno]
329
330  *) mod_lua: add support for writing/reading cookies via r:getcookie and 
331     r:setcookie. [Daniel Gruno]
332
333  *) mod_lua: If the first yield() of a LuaOutputFilter returns a string, it should
334     be prefixed to the response as documented. [Eric Covener] 
335     Note: Not present in 2.4.7 CHANGES
336
337  *) mod_lua: Remove ETAG, Content-Length, and Content-MD5 when a LuaOutputFilter
338     is configured without mod_filter. [Eric Covener]
339     Note: Not present in 2.4.7 CHANGES
340
341  *) mod_lua: Register LuaOutputFilter scripts as changing the content and
342     content-length by default, when run my mod_filter.  Previously,
343     growing or shrinking a response that started with Content-Length set
344     would require mod_filter and FilterProtocol change=yes. [Eric Covener]
345     Note: Not present in 2.4.7 CHANGES
346
347  *) mod_lua: Return a 500 error if a LuaHook* script doesn't return a
348     numeric return code. [Eric Covener]
349     Note: Not present in 2.4.7 CHANGES
350
351Changes with Apache 2.4.6
352
353  *) Revert a broken fix for PR54948 that was applied to 2.4.5 (which was
354     not released) and found post-2.4.5 tagging.
355
356Changes with Apache 2.4.5
357
358  *) SECURITY: CVE-2013-1896 (cve.mitre.org)
359     mod_dav: Sending a MERGE request against a URI handled by mod_dav_svn with
360     the source href (sent as part of the request body as XML) pointing to a
361     URI that is not configured for DAV will trigger a segfault. [Ben Reser
362     <ben reser.org>]
363
364  *) SECURITY: CVE-2013-2249 (cve.mitre.org)
365     mod_session_dbd: Make sure that dirty flag is respected when saving
366     sessions, and ensure the session ID is changed each time the session
367     changes. This changes the format of the updatesession SQL statement.
368     Existing configurations must be changed.
369     [Takashi Sato, Graham Leggett]
370
371  *) mod_auth_basic: Add a generic mechanism to fake basic authentication
372     using the ap_expr parser. AuthBasicFake allows the administrator to 
373     construct their own username and password for basic authentication based 
374     on their needs. [Graham Leggett]
375
376  *) mpm_event: Check that AsyncRequestWorkerFactor is not negative. PR 54254.
377     [Jackie Zhang <jackie qq zhang gmail com>]
378
379  *) mod_proxy: Ensure we don't attempt to amend a table we are iterating
380     through, ensuring that all headers listed by Connection are removed.
381     [Graham Leggett, Co-Advisor <coad measurement-factory.com>]
382
383  *) mod_proxy_http: Make the proxy-interim-response environment variable
384     effective by formally overriding origin server behaviour. [Graham
385     Leggett, Co-Advisor <coad measurement-factory.com>]
386
387  *) mod_proxy: Fix seg-faults when using the global pool on threaded
388     MPMs [Thomas Eckert <thomas.r.w.eckert gmail.com>, Graham Leggett,
389     Jim Jagielski]
390
391  *) mod_deflate: Remove assumptions as to when an EOS bucket might arrive.
392     Gracefully step aside if the body size is zero. [Graham Leggett]
393
394  *) mod_ssl: Fix possible truncation of OCSP responses when reading from the
395     server.  [Joe Orton]
396
397  *) core: Support the SINGLE_LISTEN_UNSERIALIZED_ACCEPT optimization
398     on Linux kernel versions 3.x and above.  PR 55121.  [Bradley Heilbrun
399     <apache heilbrun.org>]
400
401  *) mod_cache_socache: Make sure the CacheSocacheMaxSize directive is merged
402     correctly. [Jens Låås <jelaas gmail.com>]
403
404  *) rotatelogs: add -n number-of-files option to rotate through a number
405     of fixed-name logfiles. [Eric Covener]
406
407  *) mod_proxy: Support web-socket tunnels via mod_proxy_wstunnel.
408     [Jim Jagielski]
409
410  *) mod_cache_socache: Use the name of the socache implementation when performing
411     a lookup rather than using the raw arguments. [Martin Ksellmann
412     <martin@ksellmann.de>]
413
414  *) core: Add dirwalk_stat hook.  [Jeff Trawick]
415
416  *) core: Add post_perdir_config hook.
417     [Steinar Gunderson <sgunderson bigfoot.com>]
418
419  *) proxy_util: NULL terminate the right buffer in 'send_http_connect'.
420     [Christophe Jaillet]
421
422  *) mod_remoteip: close file in error path. [Christophe Jaillet]
423
424  *) core: make the "default" parameter of the "ErrorDocument" option case
425     insensitive. PR 54419 [Tianyin Xu <tixu cs ucsd edu>]
426
427  *) mod_proxy_html: make the "ProxyHTMLFixups" options case insensitive.
428     PR 54420 [Tianyin Xu <tixu cs ucsd edu>]
429
430  *) mod_cache: Make option "CacheDisable" in mod_cache case insensitive.
431     PR 54462 [Tianyin Xu <tixu cs ucsd edu>]
432
433  *) mod_cache: If a 304 response indicates an entity not currently cached, then
434     the cache MUST disregard the response and repeat the request without the
435     conditional. [Graham Leggett, Co-Advisor <coad measurement-factory.com>]
436
437  *) mod_cache: Ensure that we don't attempt to replace a cached response
438     with an older response as per RFC2616 13.12. [Graham Leggett, Co-Advisor
439     <coad measurement-factory.com>]
440
441  *) core, mod_cache: Ensure RFC2616 compliance in ap_meets_conditions()
442     with weak validation combined with If-Range and Range headers. Break
443     out explicit conditional header checks to be useable elsewhere in the
444     server. Ensure weak validation RFC compliance in the byteranges filter.
445     Ensure RFC validation compliance when serving cached entities. PR 16142
446     [Graham Leggett, Co-Advisor <coad measurement-factory.com>]
447
448  *) core: Add the ability to do explicit matching on weak and strong ETags
449     as per RFC2616 Section 13.3.3. [Graham Leggett, Co-Advisor
450     <coad measurement-factory.com>]
451
452  *) mod_cache: Ensure that updated responses to HEAD requests don't get
453     mistakenly paired with a previously cached body. Ensure that any existing
454     body is removed when a HEAD request is cached. [Graham Leggett,
455     Co-Advisor <coad measurement-factory.com>]
456
457  *) mod_cache: Honour Cache-Control: no-store in a request. [Graham Leggett]
458
459  *) mod_cache: Make sure that contradictory entity headers present in a 304
460     Not Modified response are caught and cause the entity to be removed.
461     [Graham Leggett]
462
463  *) mod_cache: Make sure Vary processing handles multivalued Vary headers and
464     multivalued headers referred to via Vary. [Graham Leggett]
465
466  *) mod_cache: When serving from cache, only the last header of a multivalued
467     header was taken into account. Fixed. Ensure that Warning headers are
468     correctly handled as per RFC2616. [Graham Leggett]
469
470  *) mod_cache: Ignore response headers specified by no-cache=header and
471     private=header as specified by RFC2616 14.9.1 What is Cacheable. Ensure
472     that these headers are still processed when multiple Cache-Control
473     headers are present in the response. PR 54706 [Graham Leggett,
474     Yann Ylavic <ylavic.dev gmail.com>]
475
476  *) mod_cache: Invalidate cached entities in response to RFC2616 Section
477     13.10 Invalidation After Updates or Deletions. PR 15868 [Graham
478     Leggett]
479
480  *) mod_dav: Improve error handling in dav_method_put(), add new
481     dav_join_error() function.  PR 54145.  [Ben Reser <ben reser.org>]
482
483  *) mod_dav: Do not fail PROPPATCH when prop namespace is not known.
484     PR 52559 [Diego Santa Cruz <diego.santaCruz spinetix.com>]
485
486  *) mod_dav: When a PROPPATCH attempts to remove a non-existent dead
487     property on a resource for which there is no dead property in the same
488     namespace httpd segfaults. PR 52559 [Diego Santa Cruz
489     <diego.santaCruz spinetix.com>]
490
491  *) mod_dav: Sending an If or If-Match header with an invalid ETag doesn't
492     result in a 412 Precondition Failed for a COPY operation. PR54610
493     [Timothy Wood <tjw omnigroup.com>]
494
495  *) mod_dav: Make sure that when we prepare an If URL for Etag comparison,
496     we compare unencoded paths. PR 53910 [Timothy Wood <tjw omnigroup.com>]
497
498  *) mod_deflate: Remove assumptions as to when an EOS bucket might arrive.
499     Gracefully step aside if the body size is zero. [Graham Leggett]
500
501  *) 'AuthGroupFile' and 'AuthUserFile' do not accept anymore the optional
502     'standard' keyword . It was unused and not documented.
503     PR54463 [Tianyin Xu <tixu cs.ucsd.edu> and Christophe Jaillet]
504
505  *) core: Do not over allocate memory within 'ap_rgetline_core' for
506     the common case. [Christophe Jaillet]
507
508  *) core: speed up (for common cases) and reduce memory usage of
509     ap_escape_logitem(). This should save 70-100 bytes in the request
510     pool for a default config. [Christophe Jaillet]
511
512  *) mod_dav: Ensure URI is correctly uriencoded on return. PR 54611
513     [Timothy Wood <tjw omnigroup.com>]
514
515  *) mod_proxy: Reject invalid values for Max-Forwards. [Graham Leggett,
516     Co-Advisor <coad measurement-factory.com>]
517
518  *) mod_cache: RFC2616 14.9.3 The s-maxage directive also implies the
519     semantics of the proxy-revalidate directive. [Graham Leggett]
520
521  *) mod_ssl: add support for subjectAltName-based host name checking
522     in proxy mode (SSLProxyCheckPeerName). PR 54030. [Kaspar Brand]
523
524  *) core: Use the proper macro for HTTP/1.1. [Graham Leggett]
525
526  *) event MPM: Provide error handling for ThreadStackSize. PR 54311
527     [Tianyin Xu <tixu cs.ucsd.edu>, Christophe Jaillet]
528
529  *) mod_dav: Do not segfault on PROPFIND with a zero length DBM.
530     PR 52559 [Diego Santa Cruz <diego.santaCruz spinetix.com>]
531
532  *) core: Improve error message where client's request-line exceeds
533     LimitRequestLine. PR 54384 [Christophe Jaillet]
534
535  *) mod_macro: New module that provides macros within configuration files.
536     [Fabien Coelho]
537
538  *) mod_cache_socache: New cache implementation backed by mod_socache
539     that replaces mod_mem_cache known from httpd 2.2. [Graham
540     Leggett]
541
542  *) htpasswd: Add -v option to verify a password. [Stefan Fritsch]
543
544  *) mod_proxy: Add BalancerInherit and ProxyPassInherit to control
545     whether Proxy Balancers and Workers are inherited by vhosts
546     (default is On). [Jim Jagielski]
547
548  *) mod_authnz_ldap: Allow using exec: calls to obtain LDAP bind
549     password.  [Daniel Ruggeri]
550
551  *) Added balancer parameter failontimeout to allow server admin
552     to configure an IO timeout as an error in the balancer.
553     [Daniel Ruggeri]
554
555  *) mod_auth_digest: Fix crashes if shm initialization failed. [Stefan
556     Fritsch]
557
558  *) htpasswd, htdbm: Fix password generation. PR 54735. [Stefan Fritsch]
559
560  *) core: Add workaround for gcc bug on sparc/64bit. PR 52900.
561     [Stefan Fritsch]
562
563  *) mod_setenvif: Fix crash in case SetEnvif and SetEnvIfExpr are used
564     together. PR 54881. [Ruediger Pluem]
565
566  *) htdigest: Fix buffer overflow when reading digest password file
567     with very long lines. PR 54893. [Rainer Jung]
568
569  *) ap_expr: Add the ability to base64 encode and base64 decode
570     strings and to generate their SHA1 and MD5 hash.
571     [Graham Leggett, Stefan Fritsch]
572
573  *) mod_log_config: Fix crash when logging request end time for a failed
574     request.  PR 54828 [Rainer Jung]
575
576  *) mod_ssl: Catch missing, mismatched or encrypted client cert/key pairs
577     with SSLProxyMachineCertificateFile/Path directives. PR 52212, PR 54698.
578     [Keith Burdis <keith burdis.org>, Joe Orton, Kaspar Brand]
579
580  *) mod_ssl: Quiet FIPS mode weak keys disabled and FIPS not selected emits
581     in the error log to debug level.  [William Rowe]
582
583  *) mod_cache_disk: CacheMinFileSize and CacheMaxFileSize were always
584     using compiled in defaults of 1000000/1 respectively. [Eric Covener]
585
586  *) mod_lbmethod_heartbeat, mod_heartmonitor: Respect DefaultRuntimeDir/
587     DEFAULT_REL_RUNTIMEDIR for the heartbeat storage file.  [Jeff Trawick]
588
589  *) mod_include: Use new ap_expr for 'elif', like 'if', 
590     if legacy parser is not specified.  PR 54548 [Tom Donovan]
591
592  *) mod_lua: Add some new functions: r:htpassword(), r:mkdir(), r:mkrdir(),
593     r:rmdir(), r:touch(), r:get_direntries(), r.date_parse_rfc().
594     [Guenter Knauf]
595
596  *) mod_lua: Add multipart form data handling. [Daniel Gruno]
597
598  *) mod_lua: If a LuaMapHandler doesn't return any value, log a warning
599     and treat it as apache2.OK. [Eric Covener]
600
601  *) mod_lua: Add bindings for apr_dbd/mod_dbd database access
602     [Daniel Gruno]
603
604  *) mod_lua: Add LuaInputFilter/LuaOutputFilter for creating content
605     filters in Lua [Daniel Gruno]
606
607  *) mod_lua: Allow scripts handled by the lua-script handler to return
608     a status code to the client (such as a 302 or a 500) [Daniel Gruno]
609
610  *) mod_lua: Decline handling 'lua-script' if the file doesn't exist,
611     rather than throwing an internal server error. [Daniel Gruno]
612
613  *) mod_lua: Add functions r:flush and r:sendfile as well as additional
614     request information to the request_rec structure. [Daniel Gruno]
615
616  *) mod_lua: Add a server scope for Lua states, which creates a pool of
617     states with managable minimum and maximum size. [Daniel Gruno]
618
619  *) mod_lua: Add new directive, LuaMapHandler, for dynamically mapping
620     URIs to Lua scripts and functions using regular expressions.
621     [Daniel Gruno]
622
623  *) mod_lua: Add new directive LuaCodeCache for controlling in-memory
624     caching of lua scripts. [Daniel Gruno]
625
626Changes with Apache 2.4.4
627
628  *) SECURITY: CVE-2012-3499 (cve.mitre.org)
629     Various XSS flaws due to unescaped hostnames and URIs HTML output in
630     mod_info, mod_status, mod_imagemap, mod_ldap, and mod_proxy_ftp.
631     [Jim Jagielski, Stefan Fritsch, Niels Heinen <heinenn google com>]
632
633  *) SECURITY: CVE-2012-4558 (cve.mitre.org)
634     XSS in mod_proxy_balancer manager interface. [Jim Jagielski,
635     Niels Heinen <heinenn google com>]
636
637  *) mod_dir: Add support for the value 'disabled' in FallbackResource.
638     [Vincent Deffontaines]
639
640  *) mod_proxy_connect: Don't keepalive the connection to the client if the
641     backend closes the connection. PR 54474. [Pavel Mateja <pavel netsafe cz>]
642
643  *) mod_lua: Add bindings for mod_dbd/apr_dbd database access.
644     [Daniel Gruno]
645
646  *) mod_proxy: Allow for persistence of local changes made via the
647     balancer-manager between graceful/normal restarts and power
648     cycles. [Jim Jagielski]
649
650  *) mod_proxy: Fix startup crash with mis-defined balancers.
651     PR 52402. [Jim Jagielski]
652
653  *) --with-module: Fix failure to integrate them into some existing
654     module directories.  PR 40097.  [Jeff Trawick]
655
656  *) htcacheclean: Fix potential segfault if "-p" is omitted.  [Joe Orton]
657
658  *) mod_proxy_http: Honour special value 0 (unlimited) of LimitRequestBody
659     PR 54435.  [Pavel Mateja <pavel netsafe.cz>]
660
661  *) mod_proxy_ajp: Support unknown HTTP methods. PR 54416.
662     [Rainer Jung]
663
664  *) htcacheclean: Fix list options "-a" and "-A".
665     [Rainer Jung]
666
667  *) mod_slotmem_shm: Fix mistaken reset of num_free for restored shm.
668     [Jim Jagielski]
669
670  *) mod_proxy: non-existance of byrequests is not an immediate error.
671     [Jim Jagielski]
672
673  *) mod_proxy_balancer: Improve output of balancer-manager (re: Drn,
674     Dis, Ign, Stby). PR 52478 [Danijel <dt-ng rbfh de>]
675  
676  *) configure: Fix processing of --disable-FEATURE for various features.
677     [Jeff Trawick]
678
679  *) mod_dialup/mod_http: Prevent a crash in mod_dialup in case of internal
680     redirect. PR 52230.
681
682  *) various modules, rotatelogs: Replace use of apr_file_write() with
683     apr_file_write_full() to prevent incomplete writes. PR 53131.
684     [Nicolas Viennot <apache viennot biz>, Stefan Fritsch]
685
686  *) ab: Support socket timeout (-s timeout).
687     [Guido Serra <zeph fsfe org>]
688
689  *) httxt2dbm: Correct length computation for the 'value' stored in the
690     DBM file. PR 47650 [jon buckybox com]
691
692  *) core: Be more correct about rejecting directives that cannot work in <If>
693     sections. [Stefan Fritsch]
694
695  *) core: Fix directives like LogLevel that need to know if they are invoked
696     at virtual host context or in Directory/Files/Location/If sections to
697     work properly in If sections that are not in a Directory/Files/Location.
698     [Stefan Fritsch]
699
700  *) mod_xml2enc: Fix problems with charset conversion altering the
701     Content-Length. [Micha Lenk <micha lenk info>]
702
703  *) ap_expr: Add req_novary function that allows HTTP header lookups
704     without adding the name to the Vary header. [Stefan Fritsch]
705
706  *) mod_slotmem_*: Add in new fgrab() function which forces a grab and
707     slot allocation on a specified slot. Allow for clearing of inuse
708     array. [Jim Jagielski]
709
710  *) mod_proxy_ftp: Fix segfaults on IPv4 requests to hosts with DNS
711     AAAA records. PR  40841. [Andrew Rucker Jones <arjones simultan
712     dyndns org>, <ast domdv de>, Jim Jagielski]
713
714  *) mod_auth_form: Make sure that get_notes_auth() sets the user as does
715     get_form_auth() and get_session_auth(). Makes sure that REMOTE_USER
716     does not vanish during mod_include driven subrequests. [Graham
717     Leggett]
718
719  *) mod_cache_disk: Resolve errors while revalidating disk-cached files on
720     Windows ("...rename tempfile to datafile failed..."). PR 38827
721     [Eric Covener]
722
723  *) mod_proxy_balancer: Bring XML output up to date. [Jim Jagielski]
724
725  *) htpasswd, htdbm: Optionally read passwords from stdin, as more
726     secure alternative to -b.  PR 40243. [Adomas Paltanavicius <adomas
727     paltanavicius gmail com>, Stefan Fritsch]
728
729  *) htpasswd, htdbm: Add support for bcrypt algorithm (requires
730     apr-util 1.5 or higher). PR 49288. [Stefan Fritsch]
731
732  *) htpasswd, htdbm: Put full 48bit of entropy into salt, improve
733     error handling. Add some of htpasswd's improvements to htdbm,
734     e.g. warn if password is truncated by crypt(). [Stefan Fritsch]
735
736  *) mod_auth_form: Support the expr parser in the
737     AuthFormLoginRequiredLocation, AuthFormLoginSuccessLocation and
738     AuthFormLogoutLocation directives. [Graham Leggett]
739
740  *) mod_ssl: Add support for TLS-SRP (Secure Remote Password key exchange
741     for TLS, RFC 5054). PR 51075. [Quinn Slack <sqs cs stanford edu>,
742     Christophe Renou, Peter Sylvester]
743
744  *) mod_rewrite: Stop mergeing RewriteBase down to subdirectories
745     unless new option 'RewriteOptions MergeBase' is configured.
746     PR 53963. [Eric Covener]
747
748  *) mod_header: Allow for exposure of loadavg and server load using new 
749     format specifiers %l, %i, %b [Jim Jagielski]
750  
751  *) core: Make ap_regcomp() return AP_REG_ESPACE if out of memory.  Make
752     ap_pregcomp() abort if out of memory. This raises the minimum PCRE
753     requirement to version 6.0. [Stefan Fritsch]
754
755  *) mod_proxy: Add ability to configure the sticky session separator.
756     PR 53893. [<inu inusasha de>, Jim Jagielski]
757
758  *) mod_dumpio: Correctly log large messages
759     PR 54179 [Marek Wianecki <mieszek2 interia pl>]
760
761  *) core: Don't fail at startup with AH00554 when Include points to 
762     a directory without any wildcard character. [Eric Covener]
763
764  *) core: Fail startup if the argument to ServerTokens is unrecognized.
765     [Jackie Zhang  <jackie.qq.zhang gmail.com>]
766
767  *) mod_log_forensic: Don't log a spurious "-" if a request has been rejected
768     before mod_log_forensic could attach its id to it. [Stefan Fritsch]
769
770  *) rotatelogs: Omit the second argument for the first invocation of
771     a post-rotate program when -p is used, per the documentation.
772     [Joe Orton]
773
774  *) mod_session_dbd: fix a segmentation fault in the function dbd_remove.
775     PR 53452. [<rebanerebane gmail com>, Reimo Rebane]
776
777  *) core: Functions to provide server load values: ap_get_sload() and
778     ap_get_loadavg(). [Jim Jagielski, Jan Kaluza <jkaluza redhat.com>,
779     Jeff Trawick]
780
781  *) mod_ldap: Fix regression in handling "server unavailable" errors on 
782     Windows.  PR 54140.  [Eric Covener]
783 
784  *) syslog logging: Remove stray ", referer" at the end of some messages.
785     [Jeff Trawick]
786
787  *) "Iterate" directives: Report an error if no arguments are provided.
788     [Jeff Trawick]
789
790  *) mod_ssl: Change default for SSLCompression to off, as compression
791     causes security issues in most setups. (The so called "CRIME" attack).
792     [Stefan Fritsch]
793
794  *) ab: add TLS1.1/TLS1.2 options to -f switch, and adapt output
795     to more accurately report the negotiated protocol. PR 53916.
796     [Nicolás Pernas Maradei <nico emutex com>, Kaspar Brand]
797
798  *) core: ErrorDocument now works for requests without a Host header.
799     PR 48357.  [Jeff Trawick]
800
801  *) prefork: Avoid logging harmless errors during graceful stop.
802     [Joe Orton, Jeff Trawick]
803
804  *) mod_proxy: When concatting for PPR, avoid cases where we
805     concat ".../" and "/..." to create "...//..." [Jim Jagielski]
806
807  *) mod_cache: Wrong content type and character set when
808     mod_cache serves stale content because of a proxy error. 
809     PR 53539.  [Rainer Jung, Ruediger Pluem]
810
811  *) mod_proxy_ajp: Fix crash in packet dump code when logging
812     with LogLevel trace7 or trace8.  PR 53730.  [Rainer Jung]
813
814  *) httpd.conf: Removed the configuration directives setting a bad_DNT
815     environment introduced in 2.4.3. The actual directives are commented
816     out in the default conf file.
817
818  *) core: Apply length limit when logging Status header values.
819     [Jeff Trawick, Chris Darroch]
820
821  *) mod_proxy_balancer: The nonce is only derived from the UUID iff
822     not set via the 'nonce' balancer param. [Jim Jagielski]
823
824  *) mod_ssl: Match wildcard SSL certificate names in proxy mode.  
825     PR 53006.  [Joe Orton]
826
827  *) Windows: Fix output of -M, -L, and similar command-line options
828     which display information about the server configuration.
829     [Jeff Trawick]
830
831Changes with Apache 2.4.3
832
833  *) SECURITY: CVE-2012-3502  (cve.mitre.org)
834     mod_proxy_ajp, mod_proxy_http: Fix an issue in back end
835     connection closing which could lead to privacy issues due
836     to a response mixup. PR 53727. [Rainer Jung]
837
838  *) SECURITY: CVE-2012-2687 (cve.mitre.org)
839     mod_negotiation: Escape filenames in variant list to prevent a
840     possible XSS for a site where untrusted users can upload files to
841     a location with MultiViews enabled. [Niels Heinen <heinenn google.com>]
842
843  *) mod_authnz_ldap: Don't try a potentially expensive nested groups
844     search before exhausting all AuthLDAPGroupAttribute checks on the
845     current group. PR 52464 [Eric Covener]
846
847  *) mod_lua: Add new directive LuaAuthzProvider to allow implementing an
848     authorization provider in lua. [Stefan Fritsch]
849
850  *) core: Be less strict when checking whether Content-Type is set to 
851     "application/x-www-form-urlencoded" when parsing POST data, 
852     or we risk losing data with an appended charset. PR 53698
853     [Petter Berntsen <petterb gmail.com>]
854
855  *) httpd.conf: Added configuration directives to set a bad_DNT environment
856     variable based on User-Agent and to remove the DNT header field from
857     incoming requests when a match occurs. This currently has the effect of
858     removing DNT from requests by MSIE 10.0 because it deliberately violates
859     the current specification of DNT semantics for HTTP. [Roy T. Fielding]
860
861  *) mod_socache_shmcb: Fix bus error due to a misalignment
862     in some 32 bit builds, especially on Solaris Sparc.
863     PR 53040.  [Rainer Jung]
864
865  *) mod_cache: Set content type in case we return stale content.
866     [Ruediger Pluem]
867
868  *) Windows: Fix SSL failures on windows with AcceptFilter https none.
869     PR 52476.  [Jeff Trawick]
870
871  *) ab: Fix read failure when targeting SSL server.  [Jeff Trawick]
872
873  *) The following now respect DefaultRuntimeDir/DEFAULT_REL_RUNTIMEDIR:
874     - mod_auth_digest: shared memory file
875     [Jeff Trawick]
876
877  *) htpasswd: Use correct file mode for checking if file is writable.
878     PR 45923. [Stefan Fritsch]
879
880  *) mod_rewrite: Fix crash with dbd RewriteMaps. PR 53663. [Mikhail T.
881     <mi apache aldan algebra com>]
882
883  *) mod_ssl: Add new directive SSLCompression to disable TLS-level
884     compression. PR 53219. [Björn Jacke <bjoern j3e de>, Stefan Fritsch]
885
886  *) mod_lua: Add a few missing request_rec fields. Rename remote_ip to
887     client_ip to match conn_rec. [Stefan Fritsch]
888
889  *) mod_lua: Change prototype of vm_construct, to work around gcc bug which
890     causes a segfault. PR 52779. [Dick Snippe <Dick Snippe tech omroep nl>]
891
892  *) mpm_event: Don't count connections in lingering close state when
893     calculating how many additional connections may be accepted.
894     [Stefan Fritsch]
895
896  *) mod_ssl: If exiting during initialization because of a fatal error,
897     log a message to the main error log pointing to the appropriate
898     virtual host error log. [Stefan Fritsch]
899
900  *) mod_proxy_ajp: Reduce memory usage in case of many keep-alive requests on
901     one connection. PR 52275. [Naohiro Ooiwa <naohiro ooiwa miraclelinux com>]
902
903  *) mod_proxy_balancer: Restore balancing after a failed worker has
904     recovered when using lbmethod_bybusyness.  PR 48735.  [Jeff Trawick]
905
906  *) mod_setenvif: Compile some global regex only once during startup.
907     This should save some memory, especially with .htaccess.
908     [Stefan Fritsch]
909
910  *) core: Add the port number to the vhost's name in the scoreboard.
911     [Stefan Fritsch]
912
913  *) mod_proxy: Fix ProxyPassReverse for balancer configurations.
914     PR 45434.  [Joe Orton]
915
916  *) mod_lua: Add the parsebody function for parsing POST data. PR 53064.
917     [Daniel Gruno]
918
919  *) apxs: Use LDFLAGS from config_vars.mk in addition to CFLAGS and CPPFLAGS.
920     [Stefan Fritsch]
921
922  *) mod_proxy: Fix memory leak or possible corruption in ProxyBlock
923     implementation.  [Ruediger Pluem, Joe Orton]
924
925  *) mod_proxy: Check hostname from request URI against ProxyBlock list,
926     not forward proxy, if ProxyRemote* is configured.  [Joe Orton]
927
928  *) mod_proxy_connect: Avoid DNS lookup on hostname from request URI 
929     if ProxyRemote* is configured.  PR 43697.  [Joe Orton]
930
931  *) mpm_event, mpm_worker: Remain active amidst prevalent child process
932     resource shortages.  [Jeff Trawick]
933
934  *) Add "strict" and "warnings" pragmas to Perl scripts.  [Rich Bowen]
935
936  *) The following now respect DefaultRuntimeDir/DEFAULT_REL_RUNTIMEDIR:
937     - core: the scoreboard (ScoreBoardFile), pid file (PidFile), and
938       mutexes (Mutex)
939     [Jim Jagielski]
940
941  *) ab: Fix bind() errors.  [Joe Orton]
942
943  *) mpm_event: Don't do a blocking write when starting a lingering close
944     from the listener thread. PR 52229. [Stefan Fritsch]
945
946  *) mod_so: If a filename without slashes is specified for LoadFile or
947     LoadModule and the file cannot be found in the server root directory,
948     try to use the standard dlopen() search path. [Stefan Fritsch]
949
950  *) mpm_event, mpm_worker: Fix cases where the spawn rate wasn't reduced
951     after child process resource shortages.  [Jeff Trawick]
952
953  *) mpm_prefork: Reduce spawn rate after a child process exits due to
954     unexpected poll or accept failure.  [Jeff Trawick]
955
956  *) core: Log value of Status header line in script responses rather
957     than the fixed header name.  [Chris Darroch]
958
959  *) mpm_ssl: Fix handling of empty response from OCSP server.
960     [Jim Meyering <meyering redhat.com>, Joe Orton]
961
962  *) mpm_event: Fix handling of MaxConnectionsPerChild. [Stefan Fritsch]
963
964  *) mod_authz_core: If an expression in "Require expr" returns denied and
965     references %{REMOTE_USER}, trigger authentication and retry. PR 52892.
966     [Stefan Fritsch]
967
968  *) core: Always log if LimitRequestFieldSize triggers.  [Stefan Fritsch]
969
970  *) mod_deflate: Skip compression if compression is enabled at SSL level.
971     [Stefan Fritsch]
972
973  *) core: Add missing HTTP status codes registered with IANA.
974     [Julian Reschke <julian.reschke gmx.de>, Rainer Jung]
975
976  *) mod_ldap: Treat the "server unavailable" condition as a transient
977     error with all LDAP SDKs.  [Filip Valder <filip.valder vsb.cz>]
978
979  *) core: Fix spurious "not allowed here" error returned when the Options 
980     directive is used in .htaccess and "AllowOverride Options" (with no 
981     specific options restricted) is configured.  PR 53444. [Eric Covener]
982
983  *) mod_authz_core: Fix parsing of Require arguments in <AuthzProviderAlias>.
984     PR 53048. [Stefan Fritsch]
985
986  *) mod_log_config: Fix %{abc}C truncating cookie values at first "=".
987     PR 53104. [Greg Ames]
988
989  *) mod_ext_filter: Fix error_log spam when input filters are configured.  
990     [Joe Orton]
991
992  *) mod_rewrite: Add "AllowAnyURI" option. PR 52774. [Joe Orton]
993
994  *) htdbm, htpasswd: Don't crash if crypt() fails (e.g. with FIPS enabled). 
995     [Paul Wouters <pwouters redhat.com>, Joe Orton]
996
997  *) core: Use a TLS 1.0 close_notify alert for internal dummy connection if
998     the chosen listener is configured for https. [Joe Orton]
999
1000  *) mod_proxy: Use the the same hostname for SNI as for the HTTP request when
1001     forwarding to SSL backends. PR 53134.
1002     [Michael Weiser <michael weiser.dinsnail.net>, Ruediger Pluem]
1003
1004  *) mod_info: Display all registered providers. [Stefan Fritsch]
1005
1006  *) mod_ssl: Send the error message for speaking http to an https port using
1007     HTTP/1.0 instead of HTTP/0.9, and omit the link that may be wrong when
1008     using SNI. PR 50823. [Stefan Fritsch]
1009
1010  *) core: Fix segfault in logging if r->useragent_addr or c->client_addr is
1011     unset. PR 53265. [Stefan Fritsch]
1012
1013  *) log_server_status: Bring Perl style forward to the present, use
1014     standard modules, update for new format of server-status output.
1015     PR 45424. [Richard Bowen, Dave Brondsema, and others]
1016
1017  *) mod_sed, mod_log_debug, mod_rewrite: Symbol namespace cleanups. 
1018     [Joe Orton, André Malo]
1019
1020  *) core: Prevent "httpd -k restart" from killing server in presence of
1021     config error. [Joe Orton]
1022
1023  *) mod_proxy_fcgi: If there is an error reading the headers from the
1024     backend, send an error to the client. PR 52879. [Stefan Fritsch]
1025
1026Changes with Apache 2.4.2
1027
1028  *) SECURITY: CVE-2012-0883 (cve.mitre.org)
1029     envvars: Fix insecure handling of LD_LIBRARY_PATH that could lead to the
1030     current working directory to be searched for DSOs. [Stefan Fritsch]
1031
1032  *) mod_slotmem_shm: Honor DefaultRuntimeDir [Jim Jagielski]
1033
1034  *) mod_ssl: Fix crash with threaded MPMs due to race condition when
1035     initializing EC temporary keys. [Stefan Fritsch]
1036
1037  *) mod_rewrite: Fix RewriteCond integer checks to be parsed correctly.
1038     PR 53023. [Axel Reinhold <apache freakout.de>, André Malo]
1039
1040  *) mod_proxy: Add the forcerecovery balancer parameter that determines if
1041     recovery for balancer workers is enforced. [Ruediger Pluem]
1042
1043  *) Fix MPM DSO load failure on AIX.  [Jeff Trawick]
1044
1045  *) mod_proxy: Correctly set up reverse proxy worker. PR 52935.
1046     [Petter Berntsen <petterb gmail.com>]
1047
1048  *) mod_sed: Don't define PATH_MAX to a potentially undefined value, causing
1049     compile problems on GNU hurd. [Stefan Fritsch]
1050
1051  *) core: Add ap_runtime_dir_relative() and DefaultRuntimeDir.
1052     [Jeff Trawick]
1053
1054  *) core: Fix breakage of Listen directives with MPMs that use a
1055     per-directory config. PR 52904. [Stefan Fritsch]
1056
1057  *) core: Disallow directives in AllowOverrideList which are only allowed
1058     in VirtualHost or server context. These are usually not prepared to be
1059     called in .htaccess files. [Stefan Fritsch]
1060
1061  *) core: In AllowOverrideList, do not allow 'None' together with other
1062     directives. PR 52823. [Stefan Fritsch]
1063
1064  *) mod_slotmem_shm: Support DEFAULT_REL_RUNTIMEDIR for file-based shm.
1065     [Jim Jagielski]
1066
1067  *) core: Fix merging of AllowOverrideList and ContentDigest.
1068     [Stefan Fritsch]
1069
1070  *) mod_request: Fix validation of the KeptBodySize argument so it
1071     doesn't always throw a configuration error. PR 52981 [Eric Covener]
1072
1073  *) core: Add filesystem paths to access denied / access failed messages
1074     AH00035 and AH00036. [Eric Covener]
1075
1076  *) mod_dumpio: Properly handle errors from subsequent input filters.
1077     PR 52914. [Stefan Fritsch]
1078
1079  *) Unix MPMs: Fix small memory leak in parent process if connect()
1080     failed when waking up children.  [Joe Orton]
1081
1082  *) "DirectoryIndex disabled" now undoes DirectoryIndex settings in
1083     the current configuration section, not just previous config sections.
1084     PR 52845. [Eric Covener]
1085
1086  *) mod_xml2enc: Fix broken handling of EOS buckets which could lead to
1087     response headers not being sent. PR 52766. [Stefan Fritsch]
1088
1089  *) mod_ssl: Properly free the GENERAL_NAMEs. PR 32652. [Kaspar Brand]
1090
1091  *) core: Check during config test that directories for the access
1092     logs actually exist. PR 29941. [Stefan Fritsch]
1093
1094  *) mod_xml2enc, mod_proxy_html: Enable per-module loglevels.
1095     [Stefan Fritsch]
1096
1097  *) mod_filter: Fix segfault with AddOutputFilterByType. PR 52755.
1098     [Stefan Fritsch]
1099
1100  *) mod_session: Sessions are encoded as application/x-www-form-urlencoded
1101     strings, however we do not handle the encoding of spaces properly.
1102     Fixed. [Graham Leggett]
1103
1104  *) Configuration: Example in comment should use a path consistent
1105     with the default configuration. PR 52715.
1106     [Rich Bowen, Jens Schleusener, Rainer Jung]
1107
1108  *) Configuration: Switch documentation links from trunk to 2.4.
1109     [Rainer Jung]
1110
1111  *) configure: Fix out of tree build using apr and apr-util in srclib.
1112     [Rainer Jung]
1113
1114Changes with Apache 2.4.1
1115
1116  *) SECURITY: CVE-2012-0053 (cve.mitre.org)
1117     Fix an issue in error responses that could expose "httpOnly" cookies
1118     when no custom ErrorDocument is specified for status code 400.  
1119     [Eric Covener]
1120
1121  *) mod_proxy_balancer: Fix crash on Windows. PR 52402 [Mladen Turk]
1122
1123  *) core: Check during configtest that the directories for error logs exist.
1124     PR 29941 [Stefan Fritsch]
1125
1126  *) Core configuration: add AllowOverride option to treat syntax
1127     errors in .htaccess as non-fatal. PR 52439 [Nick Kew, Jim Jagielski]
1128
1129  *) core: Fix memory consumption in core output filter with streaming
1130     bucket types like CGI or PIPE.  [Joe Orton, Stefan Fritsch]
1131
1132  *) configure: Disable modules at configure time if a prerequisite module
1133     is not enabled. PR 52487. [Stefan Fritsch]
1134
1135  *) Rewrite and proxy now decline what they don't support rather
1136     than fail the request. [Joe Orton]
1137
1138  *) Fix building against external apr plus apr-util if apr is not installed
1139     in a system default path. [Rainer Jung]
1140
1141  *) Doxygen fixes and improvements. [Joe Orton, Igor Galić]
1142
1143  *) core: Fix building against PCRE 8.30 by switching from the obsolete
1144     pcre_info() to pcre_fullinfo(). PR 52623 [Ruediger Pluem, Rainer Jung]
1145
1146Changes with Apache 2.4.0
1147
1148  *) SECURITY: CVE-2012-0031 (cve.mitre.org)
1149     Fix scoreboard issue which could allow an unprivileged child process
1150     to cause the parent to crash at shutdown rather than terminate
1151     cleanly.  [Joe Orton]
1152
1153  *) mod_ssl: Fix compilation with xlc on AIX. PR 52394. [Stefan Fritsch]
1154
1155  *) SECURITY: CVE-2012-0021 (cve.mitre.org)
1156     mod_log_config: Fix segfault (crash) when the '%{cookiename}C' log format
1157     string is in use and a client sends a nameless, valueless cookie, causing
1158     a denial of service. The issue existed since version 2.2.17 and 2.3.3.
1159     PR 52256.  [Rainer Canavan <rainer-apache 7val com>]
1160
1161  *) mod_ssl: when compiled against OpenSSL 1.0.1 or later, allow explicit
1162     control of TLSv1.1 and TLSv1.2 through the SSLProtocol directive.
1163     [Kaspar Brand]
1164
1165  *) mod_ssl: set OPENSSL_NO_SSL_INTERN when compiling against OpenSSL 1.0.1
1166     or later, to improve binary compatibility with future OpenSSL releases.
1167     [Kaspar Brand]
1168
1169  *) mod_mime: Don't arbitrarily bypass AddOutputFilter during a ProxyPass,
1170     but then allow AddOutputFilter during a RewriteRule [P]. Make mod_mime
1171     behave identically in both cases. PR52342. [Graham Leggett]
1172
1173  *) Move ab, logresolve, httxt2dbm and apxs to bin from sbin, along with
1174     corresponding man pages. [Graham Leggett]
1175
1176  *) Distinguish properly between the bindir and sbindir directories when
1177     installing binaries. Previously all binaries were silently installed to
1178     sbindir, whether they were system administration commands or not.
1179     [Graham Leggett]
1180
1181Changes with Apache 2.3.16
1182
1183  *) SECURITY: CVE-2011-4317 (cve.mitre.org)
1184     Resolve additional cases of URL rewriting with ProxyPassMatch or
1185     RewriteRule, where particular request-URIs could result in undesired
1186     backend network exposure in some configurations.
1187     [Joe Orton]
1188
1189  *) core: Limit line length in .htaccess to 8K like in 2.2.x, to avoid
1190     additional DoS potential. [Stefan Fritsch]
1191
1192  *) core, all modules: Add unique tag to most error log messages. [Stefan
1193     Fritsch]
1194
1195  *) mod_socache_memcache: Change provider name from "mc" to "memcache" to
1196     match module name. [Stefan Fritsch]
1197
1198  *) mod_slotmem_shm: Change provider name from "shared" to "shm" to match
1199     module name. [Stefan Fritsch]
1200
1201  *) mod_ldap: Fix segfault with Solaris LDAP when enabling ldaps. This
1202     requires an apr-util fix in which is available in apr-util >= 1.4.0.
1203     PR 42682. [Stefan Fritsch]
1204
1205  *) mod_rewrite: Add the AllowNoSlash RewriteOption, which makes it possible
1206     for RewriteRules to be placed in .htaccess files that match the directory
1207     with no trailing slash. PR 48304.
1208     [Matthew Byng-Maddick <matthew byng-maddick bbc.co.uk>]
1209
1210  *) mod_session_crypto: Add a SessionCryptoPassphraseFile directive so that
1211     the administrator can hide the keys from the configuration. [Graham
1212     Leggett]
1213
1214  *) Introduce a per request version of the remote IP address, which can be
1215     optionally modified by a module when the effective IP of the client
1216     is not the same as the real IP of the client (such as a load balancer).
1217     Introduce a per connection "peer_ip" and a per request "client_ip" to
1218     distinguish between the raw IP address of the connection and the effective
1219     IP address of the request. [Graham Leggett]
1220
1221  *) ap_pass_brigade_fchk() function added. [Jim Jagielski]
1222
1223  *) core: Pass ap_errorlog_info struct to error log hook. [Stefan Fritsch]
1224
1225  *) mod_cache_disk: Make sure we check return codes on all writes and
1226     attempts to close, and clean up after ourselves in these cases.
1227     PR43589. [Graham Leggett]
1228
1229  *) mod_cache_disk: Remove the unnecessary intermediate brigade while
1230     writing to disk. Fixes a problem where mod_disk_cache was leaving
1231     buckets in the intermediate brigade and not passing them to out on
1232     exit. [Florian S. <f_los_ch yahoo.com>, Graham Leggett]
1233
1234  *) mod_ssl: use a shorter setting for SSLCipherSuite in the default
1235     default configuration file, and add some more information about
1236     configuring a speed-optimized alternative.
1237     [Kaspar Brand]
1238
1239  *) mod_ssl: drop support for the SSLv2 protocol. [Kaspar Brand]
1240
1241  *) mod_lua: Stop losing track of all but the most specific LuaHook* directives
1242     when multiple per-directory config sections are used.  Adds LuaInherit 
1243     directive to control how parent sections are merged.  [Eric Covener]
1244
1245  *) Server directive display (-L): Include directives of DSOs.
1246     [Jeff Trawick]
1247
1248  *) mod_cache: Make sure we merge headers correctly when we handle a
1249     non cacheable conditional response. PR52120. [Graham Leggett]
1250
1251  *) Pre GA removal of components that will not be included:
1252     - mod_noloris was superseded by mod_reqtimeout
1253     - mod_serf
1254     - mpm_simple
1255     [Rainer Jung]
1256
1257  *) core: Set MaxMemFree 2048 by default. [Stefan Fritsch]
1258
1259  *) mpm_event: Fix assertion failure during very high load. [Stefan Fritsch]
1260
1261  *) configure: Additional modules loaded by default: mod_headers.
1262     Modules moved from module set "few" to "most" and no longer loaded
1263     by default: mod_actions, mod_allowmethods, mod_auth_form, mod_buffer,
1264     mod_cgi(d), mod_include, mod_negotiation, mod_ratelimit, mod_request,
1265     mod_userdir. [Rainer Jung]
1266
1267  *) mod_lua: Use the right lua scope when used as a hook. [Rainer Jung]
1268
1269  *) configure: Only load the really imporant modules (i.e. those enabled by
1270     the 'few' selection) by default. Don't handle modules enabled with
1271     --enable-foo specially. [Stefan Fritsch]
1272
1273  *) end-generation hook: Fix false notification of end-of-generation for
1274     temporary intervals with no active MPM children.  [Jeff Trawick]
1275
1276  *) mod_ssl: Add support for configuring persistent TLS session ticket
1277     encryption/decryption keys (useful for clustered environments).
1278     [Paul Querna, Kaspar Brand]
1279
1280  *) mod_usertrack: Use random value instead of remote IP address.
1281     [Stefan Fritsch]
1282
1283Changes with Apache 2.3.15
1284
1285  *) SECURITY: CVE-2011-3348 (cve.mitre.org)
1286     mod_proxy_ajp: Respond with HTTP_NOT_IMPLEMENTED when the method is not
1287     recognized.  [Jean-Frederic Clere]
1288
1289  *) SECURITY: CVE-2011-3192 (cve.mitre.org)
1290     core: Fix handling of byte-range requests to use less memory, to avoid
1291     denial of service. If the sum of all ranges in a request is larger than
1292     the original file, ignore the ranges and send the complete file.
1293     PR 51714. [Stefan Fritsch, Jim Jagielski, Ruediger Pluem, Eric Covener,
1294     <lowprio20 gmail.com>]
1295
1296  *) SECURITY: CVE-2011-3607 (cve.mitre.org)
1297     core: Fix integer overflow in ap_pregsub. This can be triggered e.g.
1298     with mod_setenvif via a malicious .htaccess. [Stefan Fritsch]
1299
1300  *) SECURITY: CVE-2011-3368 (cve.mitre.org)
1301     Reject requests where the request-URI does not match the HTTP
1302     specification, preventing unexpected expansion of target URLs in
1303     some reverse proxy configurations.  [Joe Orton]
1304
1305  *) configure: Load all modules in the generated default configuration
1306     when using --enable-load-all-modules. [Rainer Jung]
1307
1308  *) mod_reqtimeout: Change the default to set some reasonable timeout
1309     values. [Stefan Fritsch]
1310
1311  *) core, mod_dav_fs: Change default ETag to be "size mtime", i.e. remove
1312     the inode. PR 49623. [Stefan Fritsch]
1313
1314  *) mod_lua: Expose SSL variables via r:ssl_var_lookup().  [Eric Covener]
1315
1316  *) mod_lua: LuaHook{AccessChecker,AuthChecker,CheckUserID,TranslateName}
1317     can now additionally be run as "early" or "late" relative to other modules.
1318     [Eric Covener]
1319
1320  *) configure: By default, only load those modules that are either required
1321     or explicitly selected by a configure --enable-foo argument. The
1322     LoadModule statements for modules enabled by --enable-mods-shared=most
1323     and friends will be commented out. [Stefan Fritsch]
1324
1325  *) mod_lua: Prevent early Lua hooks (LuaHookTranslateName and 
1326     LuaHookQuickHandler) from being configured in <Directory>, <Files>, 
1327     and htaccess where the configuration would have been ignored.
1328     [Eric Covener]
1329
1330  *) mod_lua: Resolve "attempt to index local 'r' (a userdata value)" errors
1331     in LuaMapHandler scripts [Eric Covener]
1332
1333  *) mod_log_debug: Rename optional argument from if= to expr=, to be more
1334     in line with other config directives. [Stefan Fritsch]
1335
1336  *) mod_headers: Require an expression to be specified with expr=, to be more
1337     in line with other config directives. [Stefan Fritsch]
1338
1339  *) mod_substitute: To prevent overboarding memory usage, limit line length
1340     to 1MB. [Stefan Fritsch]
1341
1342  *) mod_lua: Make the query string (r.args) writable. [Eric Covener]
1343
1344  *) mod_include: Add support for application/x-www-form-urlencoded encoding
1345     and decoding. [Graham Leggett]
1346
1347  *) rotatelogs: Add -c option to force logfile creation in every rotation 
1348     interval, even if empty.  [Jan Kaluža <jkaluza redhat.com>]
1349 
1350  *) core: Limit ap_pregsub() to 64K, add ap_pregsub_ex() for longer strings.
1351     [Stefan Fritsch]
1352
1353  *) mod_session_crypto: Refactor to support the new apr_crypto API.
1354     [Graham Leggett]
1355
1356  *) http: Add missing Location header if local URL-path is used as
1357     ErrorDocument for 30x. [Stefan Fritsch]
1358
1359  *) mod_buffer: Make sure we step down for subrequests, but not for internal
1360     redirects triggered by mod_rewrite. [Graham Leggett]
1361
1362  *) mod_lua: add r:construct_url as a wrapper for ap_construct_url.
1363     [Eric Covener]
1364 
1365  *) mod_remote_ip: Fix configuration of internal proxies. PR 49272.
1366     [Jim Riggs <jim riggs me>]
1367
1368  *) mpm_winnt: Handle AcceptFilter 'none' mode correctly; resolve specific
1369     server IP endpoint and remote client IP upon connection.  [William Rowe]
1370
1371  *) mod_setenvif: Remove OID match which is obsoleted by SetEnvIfExpr with
1372     PeerExtList(). [Stefan Fritsch]
1373
1374  *) mpm_prefork, mpm_worker, mpm_event: If a child is created just before
1375     graceful restart and then exits because of a missing lock file, don't
1376     shutdown the whole server. PR 39311. [Shawn Michael
1377     <smichael rightnow com>]
1378
1379  *) mpm_event: Check the return value from ap_run_create_connection.
1380     PR: 41194. [Davi Arnaut]
1381
1382  *) mod_mime_magic: Add signatures for PNG and SWF to the example config.
1383     PR: 48352. [Jeremy Wagner-Kaiser <jwagner-kaiser adknowledge com>]
1384
1385  *) core, unixd: Add -D DUMP_RUN_CFG option to dump some configuration items
1386     from the parsed (or default) config. This is useful for init scripts that
1387     need to setup temporary directories and permissions. [Stefan Fritsch]
1388
1389  *) core, mod_actions, mod_asis: Downgrade error log messages which accompany
1390     a 404 request status from loglevel error to info. PR: 35768. [Stefan
1391     Fritsch]
1392
1393  *) core: Fix hook sorting with Perl modules. PR: 45076. [Torsten Foertsch
1394     <torsten foertsch gmx net>]
1395
1396  *) core: Enforce LimitRequestFieldSize after multiple headers with the same
1397     name have been merged. [Stefan Fritsch]
1398
1399  *) mod_ssl: If MaxMemFree is set, ask OpenSSL >= 1.0.0 to reduce memory
1400     usage.  PR 51618. [Cristian Rodríguez <crrodriguez opensuse org>,
1401     Stefan Fritsch]
1402
1403  *) mod_ssl: At startup, when checking a server certificate whether it
1404     matches the configured ServerName, also take dNSName entries in the
1405     subjectAltName extension into account. PR 32652, PR 47051. [Kaspar Brand]
1406
1407  *) mod_substitute: Reduce memory usage and copying of data. PR 50559.
1408     [Stefan Fritsch]
1409
1410  *) mod_ssl/proxy: enable the SNI extension for backend TLS connections
1411     [Kaspar Brand]
1412
1413  *) Add wrappers for malloc, calloc, realloc that check for out of memory
1414     situations and use them in many places. PR 51568, PR 51569, PR 51571.
1415     [Stefan Fritsch]
1416
1417  *) Fix cross-compilation of mod_cgi/mod_cgid when APR_HAVE_STRUCT_RLIMIT is 
1418     false but RLIMIT_* are defined.  PR51371. [Eric Covener]
1419
1420  *) core: Correctly obey ServerName / ServerAlias if the Host header from the
1421     request matches the VirtualHost address.
1422     PR 51709. [Micha Lenk <micha lenk.info>]
1423
1424  *) mod_unique_id: Use random number generator to initialize counter.
1425     PR 45110. [Stefan Fritsch]
1426
1427  *) core: Add convenience API for apr_random. [Stefan Fritsch]
1428
1429  *) core: Add MaxRangeOverlaps and MaxRangeReversals directives to control
1430     the number of overlapping and reversing ranges (respectively) permitted
1431     before returning the entire resource, with a default limit of 20.
1432     [Jim Jagielski]
1433
1434  *) mod_ldap: Optional function uldap_ssl_supported(r) always returned false
1435     if called from a virtual host with mod_ldap directives in it.  Did not
1436     affect mod_authnz_ldap's usage of mod_ldap.  [Eric Covener]
1437
1438  *) mod_filter: Instead of dropping the Accept-Ranges header when a filter
1439     registered with AP_FILTER_PROTO_NO_BYTERANGE is present,
1440     set the header value to "none". [Eric Covener, Ruediger Pluem]
1441
1442  *) core: Allow MaxRanges none|unlimited|default and set 'Accept-Ranges: none'
1443     in the case Ranges are being ignored with MaxRanges none.
1444     [Eric Covener]
1445
1446  *) mod_ssl: revamp CRL-based revocation checking when validating
1447     certificates of clients or proxied servers. Completely delegate
1448     CRL processing to OpenSSL, and add a new [Proxy]CARevocationCheck
1449     directive for controlling the revocation checking mode. [Kaspar Brand]
1450
1451  *) core: Add MaxRanges directive to control the number of ranges permitted
1452     before returning the entire resource, with a default limit of 200.
1453     [Eric Covener]
1454
1455  *) mod_cache: Ensure that CacheDisable can correctly appear within
1456     a LocationMatch. [Graham Leggett]
1457
1458  *) mod_cache: Fix the moving of the CACHE filter, which erroneously
1459     stood down if the original filter was not added by configuration.
1460     [Graham Leggett]
1461
1462  *) mod_ssl: improve certificate error logging. PR 47408. [Kaspar Brand]
1463
1464  *) mod_authz_groupfile: Increase length limit of lines in the group file to
1465     16MB. PR 43084. [Stefan Fritsch]
1466
1467  *) core: Increase length limit of lines in the configuration file to 16MB.
1468     PR 45888. PR 50824. [Stefan Fritsch]
1469
1470  *) core: Add API for resizable buffers. [Stefan Fritsch]
1471
1472  *) mod_ldap: Enable LDAPConnectionTimeout for LDAP toolkits that have
1473     LDAP_OPT_CONNECT_TIMEOUT instead of LDAP_OPT_NETWORK_TIMEOUT, such
1474     as Tivoli Directory Server 6.3 and later. [Eric Covener]
1475
1476  *) mod_ldap: Change default number of retries from 10 to 3, and add
1477     an LDAPRetries and LDAPRetryDelay directives. [Eric Covener]
1478
1479  *) mod_authnz_ldap: Don't retry during authentication, because this just
1480     multiplies the ample retries already being done by mod_ldap. [Eric Covener]
1481
1482  *) configure: Allow to explicitly disable modules even with module selection
1483     'reallyall'. [Stefan Fritsch]
1484
1485  *) mod_rewrite: Check validity of each internal (int:) RewriteMap even if the
1486     RewriteEngine is disabled in server context, avoiding a crash while
1487     referencing the invalid int: map at runtime. PR 50994.
1488     [Ben Noordhuis <info noordhuis nl>]
1489
1490  *) mod_ssl, configure: require OpenSSL 0.9.7 or later. [Kaspar Brand]
1491
1492  *) mod_ssl: remove ssl_toolkit_compat layer. [Kaspar Brand]
1493
1494  *) mod_ssl, configure, ab: drop support for RSA BSAFE SSL-C toolkit.
1495     [Kaspar Brand]
1496
1497  *) mod_usertrack: Run mod_usertrack earlier in the fixups hook to ensure the
1498     cookie is set when modules such as mod_rewrite trigger a redirect. Also
1499     use r->err_headers_out for the cookie, for the same reason.  PR29755.
1500     [Sami J. Mäkinen <sjm almamedia fi>, Eric Covener]
1501
1502  *) mod_proxy_http, mod_proxy_connect: Add 'proxy-status' and
1503     'proxy-source-port' request notes for logging. PR 30195. [Stefan Fritsch]
1504
1505  *) configure: Enable ldap modules in 'all' and 'most' selections if ldap
1506     is compiled into apr-util. [Stefan Fritsch]
1507
1508  *) core: Add ap_check_cmd_context()-check if a command is executed in
1509     .htaccess file. [Stefan Fritsch]
1510
1511  *) mod_deflate: Fix endless loop if first bucket is metadata. PR 51590.
1512     [Torsten Foertsch <torsten foertsch gmx net>]
1513
1514  *) mod_authn_socache: Fix to work in .htaccess if not configured anywhere
1515     in httpd.conf, and introduce an AuthnCacheEnable directive.
1516     PR 51991 [Nick Kew]
1517
1518  *) mod_xml2enc: new (formerly third-party) module supporting
1519     internationalisation for filters via smart charset sniffing
1520     and conversion. [Nick Kew]
1521
1522  *) mod_proxy_html: new (formerly third-party) module to fix up
1523     HTML links in a reverse proxy situation, where a backend
1524     generates URLs that are not resolvable by Clients. [Nick Kew]
1525
1526Changes with Apache 2.3.14
1527
1528  *) mod_proxy_ajp: Improve trace logging.  [Rainer Jung]
1529
1530  *) mod_proxy_ajp: Respect "reuse" flag in END_REPONSE packets.
1531     [Rainer Jung]
1532
1533  *) mod_proxy: enable absolute URLs to be rewritten with ProxyPassReverse,
1534     e.g. to reverse proxy "Location: https://other-internal-server/login"
1535     [Nick Kew]
1536
1537  *) prefork, worker, event: Make sure crashes are logged to the error log if
1538     httpd has already detached from the console. [Stefan Fritsch]
1539
1540  *) prefork, worker, event: Reduce period during startup/restart where a
1541     successive signal may be lost. PR 43696. [Arun Bhalla <arun shme net>]
1542
1543  *) mod_allowmethods: Correct Merging of "reset" and do not allow an
1544     empty parameter list for the AllowMethods directive. [Rainer Jung]
1545
1546  *) configure: Update selection of modules for 'all' and 'most'. 'all' will
1547     now enable all modules except for example and test modules. Make the
1548     selection for 'most' more useful (including ssl and proxy). Both 'all'
1549     and 'most' will now disable modules if dependencies are missing instead
1550     of aborting. If a specific module is requested with --enable-XXX=yes,
1551     missing dependencies will still cause configure to exit with an error.
1552     [Stefan Fritsch]
1553
1554  *) mod_ldap: Revert the integration of apr-ldap as ap_ldap which was done
1555     in 2.3.13. [Stefan Fritsch]
1556
1557  *) core: For '*' or '_default_' vhosts, use a wildcard address of any
1558     address family, rather than IPv4 only.  [Joe Orton]
1559
1560  *) core, mod_rewrite, mod_ssl, mod_nw_ssl: Make the SERVER_NAME variable
1561     include [ ] for literal IPv6 addresses, as mandated by RFC 3875.
1562     PR 26005. [Stefan Fritsch]
1563
1564  *) mod_negotiation: Fix parsing of Content-Length in type maps. PR 42203.
1565     [Nagae Hidetake <nagae eagan jp>]
1566
1567  *) core: Add more logging to ap_scan_script_header_err* functions. Add
1568     ap_scan_script_header_err*_ex functions that take a module index for
1569     logging.
1570     mod_cgi, mod_cgid, mod_proxy_fcgi, mod_proxy_scgi, mod_isapi: Use the
1571     new functions in order to make logging configurable per-module.
1572     [Stefan Fritsch]
1573
1574  *) mod_dir: Add DirectoryIndexRedirect to send an external redirect to
1575     the proper index.  [Eric Covener]
1576
1577  *) mod_deflate: Don't try to compress requests with a zero sized body.
1578     PR 51350. [Stefan Fritsch]
1579
1580  *) core: Fix startup on IPv6-only systems. PR 50592. [Joe Orton,
1581     <root linkage white-void net>]
1582
1583  *) suexec: Add environment variables CONTEXT_DOCUMENT_ROOT, CONTEXT_PREFIX,
1584     REDIRECT_ERROR_NOTES, REDIRECT_SCRIPT_FILENAME, REQUEST_SCHEME to the
1585     whitelist in suexec. PR 51499. [Graham Laverty <graham reg ca>,
1586     Stefan Fritsch]
1587
1588  *) mod_rewrite: Fix regexp RewriteCond with NoCase. [Stefan Fritsch]
1589
1590  *) mod_log_debug: New module that allows to log custom messages at various
1591     phases in the request processing. [Stefan Fritsch]
1592
1593  *) mod_ssl: Add some debug logging when loading server certificates.
1594     PR 37912. [Nick Burch <nick burch alfresco com>]
1595
1596  *) configure: Support reallyall option also for --enable-mods-static.
1597     [Rainer Jung]
1598
1599  *) mod_socache_dc: add --with-distcache to configure for choosing
1600     the distcache installation directory. [Rainer Jung]
1601
1602  *) mod_socache_dc: use correct build variable MOD_SOCACHE_DC_LDADD
1603     instead of MOD_SOCACHE_LDADD in build macro. [Rainer Jung]
1604
1605  *) mod_lua, mod_deflate: respect platform specific runpath linker
1606     flag. [Rainer Jung]
1607
1608  *) configure: Only link the httpd binary against PCRE. No other support
1609     binary needs PCRE. [Rainer Jung]
1610
1611  *) configure: tolerate dependency checking failures for modules if
1612     they have been enabled implicitely. [Rainer Jung]
1613
1614  *) configure: Allow to specify module specific custom linker flags via
1615     the MOD_XXX_LDADD variables. [Rainer Jung]
1616
1617Changes with Apache 2.3.13
1618
1619  *) ab: Support specifying the local address to use. PR 48930.
1620     [Peter Schuller <scode spotify com>]
1621
1622  *) core: Add support to ErrorLogFormat for logging the system unique
1623     thread id under Linux. [Stefan Fritsch]
1624
1625  *) event: New AsyncRequestWorkerFactor directive to influence how many
1626     connections will be accepted per process. [Stefan Fritsch]
1627
1628  *) prefork, worker, event: Rename MaxClients to MaxRequestWorkers which
1629     describes more accurately what it does. [Stefan Fritsch]
1630
1631  *) rotatelogs: Add -p argument to specify custom program to invoke
1632     after a log rotation.  PR 51285. [Sven Ulland <sveniu ifi.uio.no>,
1633     Joe Orton]
1634
1635  *) mod_ssl: Don't do OCSP checks for valid self-issued certs. [Kaspar Brand]
1636
1637  *) mod_ssl: Avoid unnecessary renegotiations with SSLVerifyDepth 0.
1638     PR 48215. [Kaspar Brand]
1639
1640  *) mod_status: Display information about asynchronous connections in the
1641     server-status. PR 44377. [Stefan Fritsch]
1642
1643  *) mpm_event: If the number of connections of a process is very high, or if
1644     all workers are busy, don't accept new connections in that process.
1645     [Stefan Fritsch]
1646
1647  *) mpm_event: Process lingering close asynchronously instead of tying up
1648     worker threads. [Jeff Trawick, Stefan Fritsch]
1649
1650  *) mpm_event: If MaxMemFree is set, limit the number of pools that is kept
1651     around. [Stefan Fritsch]
1652
1653  *) mpm_event: Fix graceful restart aborting connections. PR 43359.
1654     [Takashi Sato <takashi lans-tv com>]
1655
1656  *) mod_ssl: Disable AECDH ciphers in example config. PR 51363.
1657     [Rob Stradling <rob comodo com>]
1658
1659  *) core: Introduce new function ap_get_conn_socket() to access the socket of
1660     a connection. [Stefan Fritsch]
1661
1662  *) mod_data: Introduce a filter to support RFC2397 data URLs. [Graham
1663     Leggett]
1664
1665  *) mod_userdir/mod_alias/mod_vhost_alias: Correctly set DOCUMENT_ROOT,
1666     CONTEXT_DOCUMENT_ROOT, CONTEXT_PREFIX. PR 26052. PR 46198.
1667     [Stefan Fritsch]
1668
1669  *) core: Allow to override document_root on a per-request basis. Introduce
1670     new context_document_root and context_prefix which provide information
1671     about non-global URI-to-directory mappings (from e.g. mod_userdir or
1672     mod_alias) to scripts. PR 49705. [Stefan Fritsch]
1673
1674  *) core: Add <ElseIf> and <Else> to complement <If> sections.
1675     [Stefan Fritsch]
1676
1677  *) mod_ext_filter: Remove DebugLevel option in favor of per-module loglevel.
1678     [Stefan Fritsch]
1679
1680  *) mod_include: Make the "#if expr" element use the new "ap_expr" expression
1681     parser. The old parser can still be used by setting the new directive
1682     SSILegacyExprParser. [Stefan Fritsch]
1683
1684  *) core: Add some features to ap_expr for use by mod_include: a restricted
1685     mode that does not allow to bypass request access restrictions; new
1686     variables DOCUMENT_URI (alias for REQUEST_URI), LAST_MODIFIED; -A as an
1687     alias for -U; an additional data entry in ap_expr_eval_ctx_t for use by
1688     the consumer; an extensible ap_expr_exec_ctx() API that allows to use that
1689     data entry. [Stefan Fritsch]
1690
1691  *) mod_include: Merge directory configs instead of one SSI* config directive
1692     causing all other per-directory SSI* config directives to be reset.
1693     [Stefan Fritsch]
1694
1695  *) mod_charset_lite: Remove DebugLevel option in favour of per-module
1696     loglevel. [Stefan Fritsch]
1697
1698  *) core: Add ap_regexec_len() function that works with non-null-terminated
1699     strings. PR 51231. [Yehezkel Horowitz <horowity checkpoint com>]
1700
1701  *) mod_authnz_ldap: If the LDAP server returns constraint violation,
1702     don't treat this as an error but as "auth denied". [Stefan Fritsch]
1703
1704  *) mod_proxy_fcgi|scgi: Add support for "best guess" of PATH_INFO
1705     for SCGI/FCGI. PR 50880, 50851. [Mark Montague <mark catseye.org>,
1706     Jim Jagielski]
1707
1708  *) mod_cache: When content is served stale, and there is no means to
1709     revalidate the content using ETag or Last-Modified, and we have
1710     mandated no stale-on-error behaviour, stand down and don't cache.
1711     Saves a cache write that will never be read.
1712     [Graham Leggett]
1713
1714  *) mod_reqtimeout: Fix a timed out connection going into the keep-alive
1715     state after a timeout when discarding a request body. PR 51103.
1716     [Stefan Fritsch]
1717
1718  *) core: Add various file existance test operators to ap_expr.
1719     [Stefan Fritsch]
1720
1721  *) mod_proxy_express: New mass reverse-proxy switch extension for
1722     mod_proxy. [Jim Jagielski]
1723
1724  *) configure: Fix script error when configuring module set "reallyall".
1725     [Rainer Jung]
1726
1727Changes with Apache 2.3.12
1728
1729  *) configure, core: Provide easier support for APR's hook probe
1730     capability. [Jim Jagielski, Jeff Trawick]
1731
1732  *) Silence autoconf 2.68 warnings.  [Rainer Jung]
1733
1734  *) mod_authnz_ldap: Resolve crash when LDAP is used for authorization only
1735     [Scott Hill <shill genscape.com>]
1736
1737  *) support: Make sure check_forensic works with mod_unique_id loaded
1738     [Joe Schaefer]
1739
1740  *) Add child_status hook for tracking creation/termination of MPM child
1741     processes.  Add end_generation hook for notification when the last
1742     MPM child of a generation exits. [Jeff Trawick]
1743
1744  *) mod_ldap: Make LDAPSharedCacheSize 0 create a non-shared-memory cache per
1745     process as opposed to disabling caching completely. This allows to use
1746     the non-shared-memory cache as a workaround for the shared memory cache
1747     not being available during graceful restarts. PR 48958. [Stefan Fritsch]
1748
1749  *) Add new ap_reserve_module_slots/ap_reserve_module_slots_directive API,
1750     necessary if a module (like mod_perl) registers additional modules late
1751     in the startup phase. [Stefan Fritsch]
1752
1753  *) core: Prevent segfault if DYNAMIC_MODULE_LIMIT is reached. PR 51072.
1754     [Torsten Förtsch <torsten foertsch gmx net>]
1755
1756  *) WinNT MPM: Improve robustness under heavy load.  [Jeff Trawick]
1757
1758  *) MinGW build improvements.  PR 49535.  [John Vandenberg
1759     <jayvdb gmail.com>, Jeff Trawick]
1760
1761  *) core: Support module names with colons in loglevel configuration.
1762     [Torsten Förtsch <torsten foertsch gmx net>]
1763
1764  *) mod_ssl, ab: Support OpenSSL compiled without SSLv2 support.
1765     [Stefan Fritsch]
1766
1767  *) core: Abort if the MPM is changed across restart.  [Jeff Trawick]
1768
1769  *) mod_proxy_ajp: Add support for 'ProxyErrorOverride on'. PR 50945.
1770     [Peter Pramberger <peter pramberger.at>, Jim Jagielski]
1771
1772  *) mod_proxy_fcgi: Add support for 'ProxyErrorOverride on'. PR 50913.
1773     [Mark Montague <mark catseye.org>, Jim Jagielski]
1774
1775  *) core: Change the APIs of ap_cfg_getline() and ap_cfg_getc() to return an
1776     error code. Abort with a nice error message if a config line is too long.
1777     Partial fix for PR 50824. [Stefan Fritsch]
1778
1779  *) mod_info: Dump config to stdout during startup if -DDUMP_CONFIG is
1780     specified. PR 31956. [Stefan Fritsch]
1781
1782  *) Restore visibility of DEFAULT_PIDLOG to core and modules.  MPM
1783     helper function ap_remove_pid() added.  [Jeff Trawick]
1784
1785  *) Enable DEFAULT_REL_RUNTIMEDIR on Windows and NetWare.  [various]
1786
1787  *) Correct C++ incompatibility with http_log.h.  [Stefan Fritsch, Jeff
1788     Trawick]
1789
1790  *) mod_log_config: Prevent segfault. PR 50861. [Torsten Förtsch
1791     <torsten.foertsch gmx.net>]
1792
1793  *) core: AllowEncodedSlashes new option NoDecode to allow encoded slashes
1794     in request URL path info but not decode them. Change behavior of option
1795     "On" to decode the encoded slashes as 2.0 and 2.2 do.  PR 35256,
1796     PR 46830.  [Dan Poirier]
1797
1798  *) mod_ssl: Check SNI hostname against Host header case-insensitively.
1799     PR 49491.  [Mayank Agrawal <magrawal.08 gmail.com>]
1800
1801  *) mod_ldap: Add LDAPConnectionPoolTTL to give control over lifetime
1802     of bound backend LDAP connections.  PR47634 [Eric Covener]
1803
1804  *) mod_cache: Make CacheEnable and CacheDisable configurable per
1805     directory in addition to per server, making them work from within
1806     a LocationMatch. [Graham Leggett]
1807
1808  *) worker, event, prefork: Correct several issues when built as
1809     DSOs; most notably, the scoreboard was reinitialized during graceful
1810     restart, such that processes of the previous generation were not
1811     observable.  [Jeff Trawick]
1812
1813Changes with Apache 2.3.11
1814
1815  *) mod_win32: Added shebang check for '! so that .vbs scripts work as CGI.
1816     Win32's cscript interpreter can only use a single quote as comment char.
1817     [Guenter Knauf]
1818
1819  *) mod_proxy: balancer-manager now uses POST instead of GET.
1820     [Jim Jagielski]
1821
1822  *) core: new util function: ap_parse_form_data(). Previously,
1823     this capability was tucked away in mod_request. [Jim Jagielski]
1824
1825  *) core: new hook: ap_run_pre_read_request. [Jim Jagielski]
1826
1827  *) modules: Fix many modules that were not correctly initializing if they
1828     were not active during server startup but got enabled later during a
1829     graceful restart. [Stefan Fritsch]
1830
1831  *) core: Create new ap_state_query function that allows modules to determine
1832     if the current configuration run is the initial one at server startup,
1833     and if the server is started for testing/config dumping only.
1834     [Stefan Fritsch]
1835
1836  *) mod_proxy: Runtime configuration of many parameters for existing
1837     balancers via the balancer-manager. [Jim Jagielski]
1838
1839  *) mod_proxy: Runtime addition of new workers (BalancerMember) for existing
1840     balancers via the balancer-manager. [Jim Jagielski]
1841
1842  *) mod_cache: When a bad Expires date is present, we need to behave as if
1843     the Expires is in the past, not as if the Expires is missing. PR 16521.
1844     [Co-Advisor <coad measurement-factory.com>]
1845
1846  *) mod_cache: We must ignore quoted-string values that appear in a
1847     Cache-Control header. PR 50199. [Graham Leggett]
1848
1849  *) mod_dav: Revert change to send 501 error if unknown Content-* header is
1850    received for a PUT request. PR 42978. [Stefan Fritsch]
1851
1852  *) mod_cache: Respect s-maxage as described by RFC2616 14.9.3, which must
1853     take precedence if present. PR 35247. [Graham Leggett]
1854
1855  *) mod_ssl: Fix a possible startup failure if multiple SSL vhosts
1856     are configured with the same ServerName and private key file.
1857     [Masahiro Matsuya <mmatsuya redhat.com>, Joe Orton]
1858
1859  *) mod_socache_dc: Make module compile by fixing some typos.
1860     PR 50735 [Mark Montague <mark catseye.org>]
1861
1862  *) prefork: Update MPM state in children during a graceful stop or
1863     restart.  PR 41743.  [Andrew Punch <andrew.punch 247realmedia.com>]
1864
1865  *) mod_mime: Ignore leading dots when looking for mime extensions.
1866     PR 50434 [Stefan Fritsch]
1867
1868  *) core: Add support to set variables with the 'Define' directive. The
1869     variables that can then be used in the config using the ${VAR} syntax
1870     known from envvar interpolation. [Stefan Fritsch]
1871
1872  *) mod_proxy_http: make adding of X-Forwarded-* headers configurable.
1873     ProxyAddHeaders defaults to On. [Vincent Deffontaines]
1874
1875  *) mod_slotmem_shm: Increase memory alignment for slotmem data.
1876     [Rainer Jung]
1877
1878  *) mod_ssl: Add config options for OCSP: SSLOCSPResponderTimeout,
1879     SSLOCSPResponseMaxAge, SSLOCSPResponseTimeSkew.
1880     [Kaspar Brand <httpd-dev.2011 velox.ch>]
1881
1882  *) mod_ssl: Revamp output buffering to reduce network overhead for
1883     output fragmented into many buckets, such as chunked HTTP responses.
1884     [Joe Orton]
1885
1886  *) core: Apply <If> sections to all requests, not only to file base requests.
1887     Allow to use <If> inside <Directory>, <Location>, and <Files> sections.
1888     The merging of <If> sections now happens after the merging of <Location>
1889     sections, even if an <If> section is embedded inside a <Directory> or
1890     <Files> section.  [Stefan Fritsch]
1891
1892  *) mod_proxy: Refactor usage of shared data by dropping the scoreboard
1893     and using slotmem. Create foundation for dynamic growth/changes of
1894     members within a balancer. Remove BalancerNonce in favor of a
1895     per-balancer 'nonce' parameter. [Jim Jagielski]
1896
1897  *) mod_status: Don't show slots which are disabled by MaxClients as open.
1898     PR: 47022 [Jordi Prats <jordi prats gmail com>, Stefan Fritsch]
1899
1900  *) mpm_prefork: Fix ap_mpm_query results for AP_MPMQ_MAX_DAEMONS and
1901     AP_MPMQ_MAX_THREADS.
1902
1903  *) mod_authz_core: Fix bug in merging logic if user-based and non-user-based
1904     authorization directives were mixed. [Stefan Fritsch]
1905
1906  *) mod_authn_socache: change directive name from AuthnCacheProvider
1907     to AuthnCacheProvideFor.  The term "provider" is overloaded in
1908     this module, and we should avoid confusion between the provider
1909     of a backend (AuthnCacheSOCache) and the authn provider(s) for
1910     which this module provides cacheing (AuthnCacheProvideFor).
1911     [Nick Kew]
1912
1913  *) mod_proxy_http: Allocate the fake backend request from a child pool
1914     of the backend connection, instead of misusing the pool of the frontend
1915     request. Fixes a thread safety issue where buckets set aside in the
1916     backend connection leak into other threads, and then disappear when
1917     the frontend request is cleaned up, in turn causing corrupted buckets
1918     to make other threads spin. [Graham Leggett]
1919
1920  *) mod_ssl: Change the format of the SSL_{CLIENT,SERVER}_{I,S}_DN variables
1921     to be RFC 2253 compatible, convert non-ASCII characters to UTF8, and
1922     escape other special characters with backslashes. The old format can
1923     still be used with the LegacyDNStringFormat argument to SSLOptions.
1924
1925  *) core, mod_rewrite: Make the REQUEST_SCHEME variable available to
1926     scripts and mod_rewrite. [Stefan Fritsch]
1927
1928  *) mod_rewrite: Allow to use arbitrary boolean expressions (ap_expr) in
1929     RewriteCond. [Stefan Fritsch]
1930
1931  *) mod_rewrite: Allow to unset environment variables using E=!VAR.
1932     PR 49512. [Mark Drayton <mark markdrayton info>, Stefan Fritsch]
1933
1934  *) mod_headers: Restore the 2.3.8 and earlier default for the first
1935     argument of the Header directive ("onsuccess").  [Eric Covener]
1936
1937  *) core: Disallow the mixing of relative and absolute Options PR 33708.
1938     [Sönke Tesch <st kino-fahrplan.de>]
1939
1940  *) core: When exporting request headers to HTTP_* environment variables,
1941     drop variables whose names contain invalid characters. Describe in the
1942     docs how to restore the old behaviour. [Malte S. Stretz <mss apache org>]
1943
1944  *) core: When selecting an IP-based virtual host, favor an exact match for
1945     the port over a wildcard (or omitted) port instead of favoring the one
1946     that came first in the configuration file. [Eric Covener]
1947
1948  *) core: Overlapping virtual host address/port combinations  now implicitly
1949     enable name-based virtual hosting for that address.  The NameVirtualHost
1950     directive has no effect, and _default_ is interpreted the same as "*".
1951     [Eric Covener]
1952
1953  *) core: In the absence of any Options directives, the default is now
1954     "FollowSymlinks" instead of "All".  [Igor Galić]
1955
1956  *) rotatelogs: Add -e option to write logs through to stdout for optional
1957     further processing. [Graham Leggett]
1958
1959  *) mod_ssl: Correctly read full lines in input filter when the line is
1960     incomplete during first read. PR 50481. [Ruediger Pluem]
1961
1962  *) mod_authz_core: Add AuthzSendForbiddenOnFailure directive to allow
1963     sending '403 FORBIDDEN' instead of '401 UNAUTHORIZED' if authorization
1964     fails for an authenticated user. PR 40721. [Stefan Fritsch]
1965
1966Changes with Apache 2.3.10
1967
1968  *) mod_rewrite: Don't implicitly URL-escape the original query string
1969     when no substitution has changed it. PR 50447. [Eric Covener]
1970
1971  *) core: Honor 'AcceptPathInfo OFF' during internal redirects,
1972     such as per-directory mod_rewrite substitutions.  PR 50349.
1973     [Eric Covener]
1974
1975  *) mod_rewrite: Add 'RewriteOptions InheritBefore' to put the base
1976     rules/conditions before the overridden rules/conditions.  PR 39313.
1977     [Jérôme Grandjanny <jerome.grandjanny cea.fr>]
1978
1979  *) mod_autoindex: add IndexIgnoreReset to reset the list of IndexIgnored
1980     filenames in higher precedence configuration sections.  PR 24243.
1981     [Eric Covener]
1982
1983  *) mod_cgid: RLimit* directive support for mod_cgid.  PR 42135
1984     [Eric Covener]
1985
1986  *) core: Fail startup when the argument to ServerName looks like a glob
1987     or a regular expression instead of a hostname (*?[]).  PR 39863
1988     [Rahul Nair <rahul.g.nair gmail.com>]
1989
1990  *) mod_userdir: Add merging of enable, disable, and filename arguments
1991     to UserDir directive, leaving enable/disable of userlists unmerged.
1992     PR 44076 [Eric Covener]
1993
1994  *) httpd: When no -k option is provided on the httpd command line, the server
1995     was starting without checking for an existing pidfile.  PR 50350
1996     [Eric Covener]
1997
1998  *) mod_proxy: Put the worker in error state if the SSL handshake with the
1999     backend fails. PR 50332.
2000     [Daniel Ruggeri <DRuggeri primary.net>, Ruediger Pluem]
2001
2002  *) mod_cache_disk: Fix Windows build which was broken after renaming
2003     the module. [Gregg L. Smith]
2004
2005Changes with Apache 2.3.9
2006
2007  *) SECURITY: CVE-2010-1623 (cve.mitre.org)
2008     Fix a denial of service attack against mod_reqtimeout.
2009     [Stefan Fritsch]
2010
2011  *) mod_headers: Change default first argument of Header directive
2012     from "onsuccess" to "always". [Eric Covener]
2013
2014  *) mod_include: Add the onerror attribute to the include element,
2015     allowing an URL to be specified to include on error. [Graham
2016     Leggett]
2017
2018  *) mod_cache_disk: mod_disk_cache renamed to mod_cache_disk, to be
2019     consistent with the naming of other modules. [Graham Leggett]
2020
2021  *) mod_setenvif: Add SetEnvIfExpr directive to set env var depending on
2022     expression. [Stefan Fritsch]
2023
2024  *) mod_proxy: Fix ProxyPassInterpolateEnv directive. PR 50292.
2025     [Stefan Fritsch]
2026
2027  *) suEXEC: Add Suexec directive to disable suEXEC without renaming the
2028     binary (Suexec Off), or force startup failure if suEXEC is required
2029     but not supported (Suexec On).  Change SuexecUserGroup to fail
2030     startup instead of just printing a warning if suEXEC is disabled.
2031     [Jeff Trawick]
2032
2033  *) core: Add Error directive for aborting startup or htaccess processing
2034     with a specified error message.  [Jeff Trawick]
2035
2036  *) mod_rewrite: Fix the RewriteEngine directive to work within a
2037     location. Previously, once RewriteEngine was switched on globally,
2038     it was impossible to switch off. [Graham Leggett]
2039
2040  *) core, mod_include, mod_ssl: Move the expression parser derived from
2041     mod_include back into mod_include. Replace ap_expr with a parser
2042     derived from mod_ssl's parser. Make mod_ssl use the new parser. Rework
2043     ap_expr's public interface and provide hooks for modules to add variables
2044     and functions. [Stefan Fritsch]
2045
2046  *) core: Do the hook sorting earlier so that the hooks are properly sorted
2047     for the pre_config hook and during parsing the config. [Stefan Fritsch]
2048
2049  *) core: In the absence of any AllowOverride directives, the default is now
2050     "None" instead of "All".  PR49823 [Eric Covener]
2051
2052  *) mod_proxy: Don't allow ProxyPass or ProxyPassReverse in
2053     <Directory> or <Files>. PR47765 [Eric Covener]
2054
2055  *) prefork/worker/event MPMS: default value (when no directive is present)
2056     of MaxConnectionsPerChild/MaxRequestsPerChild is changed to 0 from 10000
2057     to match default configuration and manual. PR47782 [Eric Covener]
2058
2059  *) proxy_connect: Don't give up in the middle of a CONNECT tunnel
2060     when the child process is starting to exit.  PR50220. [Eric Covener]
2061
2062  *) mod_autoindex: Fix inheritance of mod_autoindex directives into
2063     contexts that don't have any mod_autoindex directives. PR47766.
2064     [Eric Covener]
2065
2066  *) mod_rewrite: Add END flag for RewriteRule to prevent further rounds
2067     of rewrite processing when a per-directory substitution occurs.
2068     [Eric Covener]
2069
2070  *) mod_ssl: Make sure to always log an error if loading of CA certificates
2071     fails. PR 40312. [Paul Tiemann <issues apache org ourdetour com>]
2072
2073  *) mod_dav: Send 501 error if unknown Content-* header is received for a PUT
2074     request (RFC 2616 9.6). PR 42978. [Stefan Fritsch]
2075
2076  *) mod_dav: Send 400 error if malformed Content-Range header is received for
2077     a put request (RFC 2616 14.16). PR 49825. [Stefan Fritsch]
2078
2079  *) mod_proxy: Release the backend connection as soon as EOS is detected,
2080     so the backend isn't forced to wait for the client to eventually
2081     acknowledge the data. [Graham Leggett]
2082
2083  *) mod_proxy: Optimise ProxyPass within a Location so that it is stored
2084     per-directory, and chosen during the location walk. Make ProxyPass
2085     work correctly from within a LocationMatch. [Graham Leggett]
2086
2087  *) core: Fix segfault if per-module LogLevel is on virtual host
2088     scope. PR 50117. [Stefan Fritsch]
2089
2090  *) mod_proxy: Move the ProxyErrorOverride directive to have per
2091     directory scope. [Graham Leggett]
2092
2093  *) mod_allowmethods: New module to deny certain HTTP methods without
2094     interfering with authentication/authorization. [Paul Querna,
2095     Igor Galić, Stefan Fritsch]
2096
2097  *) mod_ssl: Log certificate information and improve error message if client
2098     cert verification fails. PR 50093, PR 50094. [Lassi Tuura <lat cern ch>,
2099     Stefan Fritsch]
2100
2101  *) htcacheclean: Teach htcacheclean to limit cache size by number of
2102     inodes in addition to size of files. Prevents a cache disk from
2103     running out of space when many small files are cached.
2104     [Graham Leggett]
2105
2106  *) core: Rename MaxRequestsPerChild to MaxConnectionsPerChild, which
2107     describes more accurately what the directive does. The old name
2108     still works but logs a warning. [Stefan Fritsch]
2109
2110  *) mod_cache: Optionally serve stale data when a revalidation returns a
2111     5xx response, controlled by the CacheStaleOnError directive.
2112     [Graham Leggett]
2113
2114  *) htcacheclean: Allow the listing of valid URLs within the cache, with
2115     the option to list entry metadata such as sizes and times. [Graham
2116     Leggett]
2117
2118  *) mod_cache: correctly parse quoted strings in cache headers.
2119     PR 50199 [Nick Kew]
2120
2121  *) mod_cache: Allow control over the base URL of reverse proxied requests
2122     using the CacheKeyBaseURL directive, so that the cache key can be
2123     calculated from the endpoint URL instead of the server URL. [Graham
2124     Leggett]
2125
2126  *) mod_cache: CacheLastModifiedFactor, CacheStoreNoStore, CacheStorePrivate,
2127     CacheStoreExpired, CacheIgnoreNoLastMod, CacheDefaultExpire,
2128     CacheMinExpire and CacheMaxExpire can be set per directory/location.
2129     [Graham Leggett]
2130
2131  *) mod_disk_cache: CacheMaxFileSize, CacheMinFileSize, CacheReadSize and
2132     CacheReadTime can be set per directory/location. [Graham Leggett]
2133
2134  *) core: Speed up config parsing if using a very large number of config
2135     files. PR 50002 [andrew cloudaccess net]
2136
2137  *) mod_cache: Support the caching of HEAD requests. [Graham Leggett]
2138
2139  *) htcacheclean: Allow the option to round up file sizes to a given
2140     block size, improving the accuracy of disk usage. [Graham Leggett]
2141
2142  *) mod_ssl: Add authz providers for use with mod_authz_core and its
2143     RequireAny/RequireAll containers: 'ssl' (equivalent to SSLRequireSSL),
2144     'ssl-verify-client' (for use with 'SSLVerifyClient optional'), and
2145     'ssl-require' (expressions with same syntax as SSLRequire).
2146     [Stefan Fritsch]
2147
2148  *) mod_ssl: Make the ssl expression parser thread-safe. It now requires
2149     bison instead of yacc. [Stefan Fritsch]
2150
2151  *) mod_disk_cache: Change on-disk header file format to support the
2152     link of the device/inode of the data file to the matching header
2153     file, and to support the option of not writing a data file when
2154     the data file is empty. [Graham Leggett]
2155
2156  *) core/mod_unique_id: Add generate_log_id hook to allow to use
2157     the ID generated by mod_unique_id as error log ID for requests.
2158     [Stefan Fritsch]
2159
2160  *) mod_cache: Make sure that we never allow a 304 Not Modified response
2161     that we asked for to leak to the client should the 304 response be
2162     uncacheable. PR45341 [Graham Leggett]
2163
2164  *) mod_cache: Add the cache_status hook to register the final cache
2165     decision hit/miss/revalidate. Add optional support for an X-Cache
2166     and/or an X-Cache-Detail header to add the cache status to the
2167     response. PR48241 [Graham Leggett]
2168
2169  *) mod_authz_host: Add 'local' provider that matches connections originating
2170     on the local host. PR 19938. [Stefan Fritsch]
2171
2172  *) Event MPM: Fix crash accessing pollset on worker thread when child
2173     process is exiting.  [Jeff Trawick]
2174
2175  *) core: For process invocation (cgi, fcgid, piped loggers and so forth)
2176     pass the system library path (LD_LIBRARY_PATH or platform-specific
2177     variables) along with the system PATH, by default.  Both should be
2178     overridden together as desired using PassEnv etc; see mod_env.
2179     [William Rowe]
2180
2181  *) mod_cache: Introduce CacheStoreExpired, to allow administrators to
2182     capture a stale backend response, perform If-Modified-Since requests
2183     against the backend, and serving from the cache all 304 responses.
2184     This restores pre-2.2.4 cache behavior.  [William Rowe]
2185
2186  *) mod_rewrite: Introduce <=, >= string comparison operators, and integer
2187     comparators -lt, -le, -eq, -ge, and -gt.  To help bash users and drop
2188     the ambiguity of the symlink test "-ltest", introduce -h or -L as
2189     symlink test operators.  [William Rowe]
2190
2191  *) mod_cache: Give the cache provider the opportunity to choose to cache
2192     or not cache based on the buckets present in the brigade, such as the
2193     presence of a FILE bucket.
2194     [Graham Leggett]
2195
2196  *) mod_authz_core: Allow authz providers to check args while reading the
2197     config and allow to cache parsed args. Move 'all' and 'env' authz
2198     providers from mod_authz_host to mod_authz_core. Add 'method' authz
2199     provider depending on the HTTP method.  [Stefan Fritsch]
2200
2201  *) mod_include: Move the request_rec within mod_include to be
2202     exposed within include_ctx_t. [Graham Leggett]
2203
2204  *) mod_include: Reinstate support for UTF-8 character sets by allowing a
2205     variable being echoed or set to be decoded and then encoded as separate
2206     steps. PR47686 [Graham Leggett]
2207
2208  *) mod_cache: Add a discrete commit_entity() provider function within the
2209     mod_cache provider interface which is called to indicate to the
2210     provider that caching is complete, giving the provider the opportunity
2211     to commit temporary files permanently to the cache in an atomic
2212     fashion. Replace the inconsistent use of error cleanups with a formal
2213     set of pool cleanups attached to a subpool, which is destroyed on error.
2214     [Graham Leggett]
2215
2216  *) mod_cache: Change the signature of the store_body() provider function
2217     within the mod_cache provider interface to support an "in" brigade
2218     and an "out" brigade instead of just a single input brigade. This
2219     gives a cache provider the option to consume only part of the brigade
2220     passed to it, rather than the whole brigade as was required before.
2221     This fixes an out of memory and a request timeout condition that would
2222     occur when the original document was a large file. Introduce
2223     CacheReadSize and CacheReadTime directives to mod_disk_cache to control
2224     the amount of data to attempt to cache at a time. [Graham Leggett]
2225
2226  *) core: Add ErrorLogFormat to allow configuring error log format, including
2227     additional information that is logged once per connection or request. Add
2228     error log IDs for connections and request to allow correlating error log
2229     lines and the corresponding access log entry. [Stefan Fritsch]
2230
2231  *) core: Disable sendfile by default. [Stefan Fritsch]
2232
2233  *) mod_cache: Check the request to determine whether we are allowed
2234     to return cached content at all, and respect a "Cache-Control:
2235     no-cache" header from a client. Previously, "no-cache" would
2236     behave like "max-age=0". [Graham Leggett]
2237
2238  *) mod_cache: Use a proper filter context to hold filter data instead
2239     of misusing the per-request configuration. Fixes a segfault on trunk
2240     when the normal handler is used. [Graham Leggett]
2241
2242  *) mod_cgid: Log a warning if the ScriptSock path is truncated because
2243     it is too long. PR 49388.  [Stefan Fritsch]
2244
2245  *) vhosts: Do not allow _default_ in NameVirtualHost, or mixing *
2246     and non-* ports on NameVirtualHost, or multiple NameVirtualHost
2247     directives for the same address:port, or NameVirtualHost
2248     directives with no matching VirtualHosts, or multiple ip-based
2249     VirtualHost sections for the same address:port.  These were
2250     previously accepted with a warning, but the behavior was
2251     undefined.  [Dan Poirier]
2252
2253  *) mod_remoteip: Fix a segfault when using mod_remoteip in conjunction with
2254     Allow/Deny. PR 49838.  [Andrew Skalski <voltara gmail.com>]
2255
2256  *) core: DirectoryMatch can now match on the end of line character ($),
2257     and sub-directories of matched directories are no longer implicitly
2258     matched.  PR49809 [Eric Covener]
2259
2260  *) Regexps: introduce new higher-level regexp utility including parsing
2261     and executing perl-style regexp ops (e.g s/foo/bar/i) and regexp memory
2262     [Nick Kew]
2263
2264  *) Proxy: support setting source address.  PR 29404
2265     [Multiple contributors iterating through bugzilla,
2266      Aron Ujvari <xanco nikhok.hu>, Aleksey Midenkov <asm uezku.kemsu.ru>,
2267      <dan listening-station.net; trunk version Nick Kew]
2268
2269  *) HTTP protocol: return 400 not 503 if we have to abort due to malformed
2270     chunked encoding. [Nick Kew]
2271
2272Changes with Apache 2.3.8
2273
2274  *) suexec: Support large log files. PR 45856. [Stefan Fritsch]
2275
2276  *) core: Abort with sensible error message if no or more than one MPM is
2277     loaded. [Stefan Fritsch]
2278
2279  *) mod_proxy: Rename erroronstatus to failonstatus.
2280     [Daniel Ruggeri <DRuggeri primary.net>]
2281
2282  *) mod_dav_fs: Fix broken "creationdate" property.
2283     Regression in version 2.3.7. [Rainer Jung]
2284
2285Changes with Apache 2.3.7
2286
2287  *) SECURITY: CVE-2010-1452 (cve.mitre.org)
2288     mod_dav, mod_cache, mod_session: Fix Handling of requests without a path
2289     segment. PR: 49246 [Mark Drayton, Jeff Trawick]
2290
2291  *) mod_ldap: Properly check the result returned by apr_ldap_init. PR 46076.
2292     [Stefan Fritsch]
2293
2294  *) mod_rewrite: Log errors if rewrite map files cannot be opened. PR 49639.
2295     [Stefan Fritsch]
2296
2297  *) mod_proxy_http: Support the 'ping' property for backend HTTP/1.1 servers
2298     via leveraging 100-Continue as the initial "request".
2299     [Jim Jagielski]
2300
2301  *) core/mod_authz_core: Introduce new access_checker_ex hook that enables
2302     mod_authz_core to bypass authentication if access should be allowed by
2303     IP address/env var/... [Stefan Fritsch]
2304
2305  *) core: Introduce note_auth_failure hook to allow modules to add support
2306     for additional auth types. This makes ap_note_auth_failure() work with
2307     mod_auth_digest again. PR 48807. [Stefan Fritsch]
2308
2309  *) socache modules: return APR_NOTFOUND when a lookup is not found [Nick Kew]
2310
2311  *) mod_authn_socache: new module [Nick Kew]
2312
2313  *) configure: Add reallyall option for --enable-mods-shared. [Stefan Fritsch]
2314
2315  *) Fix Windows build when using VC6. [Gregg L. Smith <lists glewis com>]
2316
2317  *) mod_rewrite: Allow to set environment variables without explicitly
2318     giving a value. [Rainer Jung]
2319
2320  *) mod_rewrite: Remove superfluous EOL from rewrite logging. [Rainer Jung]
2321
2322  *) mod_include: recognise "text/html; parameters" as text/html
2323     PR 49616 [Andrey Chernov <ache nagual.pp.ru>]
2324
2325  *) CGI vars: allow PATH to be set by SetEnv, consistent with LD_LIBRARY_PATH
2326     PR 43906 [Nick Kew]
2327
2328  *) Core: Extra robustness: don't try authz and segfault if authn
2329     fails to set r->user.  Log bug and return 500 instead.
2330     PR 42995 [Nick Kew]
2331
2332  *) HTTP protocol filter: fix handling of longer chunk extensions
2333     PR 49474 [<tee.bee gmx.de>]
2334
2335  *) Update SSL cipher suite and add example for SSLHonorCipherOrder.
2336     [Lars Eilebrecht, Rainer Jung]
2337
2338  *) move AddOutputFilterByType from core to mod_filter.  This should
2339     fix nasty side-effects that happen when content_type is set
2340     more than once in processing a request, and make it fully
2341     compatible with dynamic and proxied contents. [Nick Kew]
2342
2343  *) mod_log_config: Implement logging for sub second timestamps and
2344     request end time.  [Rainer Jung]
2345
2346Changes with Apache 2.3.6
2347
2348  *) SECURITY: CVE-2009-3555 (cve.mitre.org)
2349     mod_ssl: Comprehensive fix of the TLS renegotiation prefix injection
2350     attack when compiled against OpenSSL version 0.9.8m or later. Introduces
2351     the 'SSLInsecureRenegotiation' directive to reopen this vulnerability
2352     and offer unsafe legacy renegotiation with clients which do not yet
2353     support the new secure renegotiation protocol, RFC 5746.
2354     [Joe Orton, and with thanks to the OpenSSL Team]
2355
2356  *) SECURITY: CVE-2009-3555 (cve.mitre.org)
2357     mod_ssl: A partial fix for the TLS renegotiation prefix injection attack
2358     by rejecting any client-initiated renegotiations. Forcibly disable
2359     keepalive for the connection if there is any buffered data readable. Any
2360     configuration which requires renegotiation for per-directory/location
2361     access control is still vulnerable, unless using OpenSSL >= 0.9.8l.
2362     [Joe Orton, Ruediger Pluem, Hartmut Keil <Hartmut.Keil adnovum.ch>]
2363
2364  *) SECURITY: CVE-2010-0408 (cve.mitre.org)
2365     mod_proxy_ajp: Respond with HTTP_BAD_REQUEST when the body is not sent
2366     when request headers indicate a request body is incoming; not a case of
2367     HTTP_INTERNAL_SERVER_ERROR.  [Niku Toivola <niku.toivola sulake.com>]
2368
2369  *) SECURITY: CVE-2010-0425 (cve.mitre.org)
2370     mod_isapi: Do not unload an isapi .dll module until the request
2371     processing is completed, avoiding orphaned callback pointers.
2372     [Brett Gervasoni <brettg senseofsecurity.com>, Jeff Trawick]
2373
2374  *) core: Filter init functions are now run strictly once per request
2375     before handler invocation.  The init functions are no longer run
2376     for connection filters.  PR 49328.  [Joe Orton]
2377
2378  *) core: Adjust the output filter chain correctly in an internal
2379     redirect from a subrequest, preserving filters from the main
2380     request as necessary.  PR 17629.  [Joe Orton]
2381
2382  *) mod_cache: Explicitly allow cache implementations to cache a 206 Partial
2383     Response if they so choose to do so. Previously an attempt to cache a 206
2384     was arbitrarily allowed if the response contained an Expires or
2385     Cache-Control header, and arbitrarily denied if both headers were missing.
2386     [Graham Leggett]
2387
2388  *) core: Add microsecond timestamp fractions, process id and thread id
2389     to the error log. [Rainer Jung]
2390
2391  *) configure: The "most" module set gets build by default.  [Rainer Jung]
2392
2393  *) configure: Building dynamic modules (DSO) by default.  [Rainer Jung]
2394
2395  *) configure: Fix broken VPATH build when using included APR.
2396     [Rainer Jung]
2397
2398  *) mod_session_crypto: Fix configure problem when building
2399     with APR 2 and for VPATH builds with included APR.
2400     [Rainer Jung]
2401
2402  *) mod_session_crypto: API compatibility with APR 2 crypto and
2403     APR Util 1.x crypto. [Rainer Jung]
2404
2405  *) ab: Fix memory leak with -v2 and SSL. PR 49383.
2406     [Pavel Kankovsky <peak argo troja mff cuni cz>]
2407
2408  *) core: Add per-module and per-directory loglevel configuration.
2409           Add some more trace logging.
2410     mod_rewrite: Replace RewriteLog/RewriteLogLevel with trace log levels.
2411     mod_ssl: Replace LogLevelDebugDump with trace log levels.
2412     mod_ssl/mod_proxy*: Adjust loglevels to be less verbose at levels info
2413           and debug.
2414     mod_dumpio:  Replace DumpIOLogLevel with trace log levels.
2415     [Stefan Fritsch]
2416
2417  *) mod_ldap: LDAP caching was suppressed (and ldap-status handler returns
2418     title page only) when any mod_ldap directives were used in VirtualHost
2419     context.  [Eric Covener]
2420
2421  *) mod_disk_cache: Decline the opportunity to cache if the response is
2422     a 206 Partial Content. This stops a reverse proxied partial response
2423     from becoming cached, and then being served in subsequent responses.
2424     [Graham Leggett]
2425
2426  *) mod_deflate: avoid the risk of forwarding data before headers are set.
2427     PR 49369 [Matthew Steele <mdsteele google.com>]
2428
2429  *) mod_authnz_ldap: Ensure nested groups are checked when the
2430     top-level group doesn't have any direct non-group members
2431     of attributes in AuthLDAPGroupAttribute. [Eric Covener]
2432
2433  *) mod_authnz_ldap: Search or Comparison during authorization phase
2434     can use the credentials from the authentication phase
2435     (AuthLDAPSearchAsUSer,AuthLDAPCompareAsUser).
2436     PR 48340 [Domenico Rotiroti, Eric Covener]
2437
2438  *) mod_authnz_ldap: Allow the initial DN search during authentication
2439     to use the HTTP username/pass instead of an anonymous or hard-coded
2440     LDAP id (AuthLDAPInitialBindAsUser, AuthLDAPInitialBindPattern).
2441     [Eric Covener]
2442
2443  *) mod_authnz_ldap: Publish requested LDAP data with an AUTHORIZE_ prefix
2444     when this module is used for authorization. See AuthLDAPAuthorizePrefix.
2445     PR 45584 [Eric Covener]
2446
2447  *) apxs -q: Stop filtering out ':' characters from the reported values.
2448     PR 45343.  [Bill Cole]
2449
2450  *) prefork MPM: Work around possible crashes on child exit in APR reslist
2451     cleanup code.  PR 43857.  [Tom Donovan]
2452
2453  *) ab: fix number of requests sent by ab when keepalive is enabled.  PR 48497.
2454     [Bryn Dole <dole blekko.com>]
2455
2456  *) Log an error for failures to read a chunk-size, and return 408 instead of
2457     413 when this is due to a read timeout.  This change also fixes some cases
2458     of two error documents being sent in the response for the same scenario.
2459     [Eric Covener] PR49167
2460
2461  *) mod_proxy_balancer: Add new directive BalancerNonce to allow admin
2462     to control/set the nonce used in the balancer-manager application.
2463     [Jim Jagielski]
2464
2465  *) mod_proxy_connect: Support port ranges in AllowConnect. PR 23673.
2466     [Stefan Fritsch]
2467
2468  *) Proxy balancer: support setting error status according to HTTP response
2469     code from a backend.  PR 48939.  [Daniel Ruggeri <DRuggeri primary.net>]
2470
2471  *) htcacheclean: Introduce the ability to clean specific URLs from the
2472     cache, if provided as an optional parameter on the command line.
2473     [Graham Leggett]
2474
2475  *) core: Introduce the IncludeStrict directive, which explicitly fails
2476     server startup if no files or directories match a wildcard path.
2477     [Graham Leggett]
2478
2479  *) htcacheclean: Report additional statistics about entries deleted.
2480     PR 48944. [Mark Drayton mark markdrayton.info]
2481
2482  *) Introduce SSLFIPS directive to support OpenSSL FIPS_mode; permits all
2483     builds of mod_ssl to use 'SSLFIPS off' for portability, but the proper
2484     build of openssl is required for 'SSLFIPS on'.  PR 46270.
2485     [Dr Stephen Henson <steve openssl.org>, William Rowe]
2486
2487  *) mod_proxy_http: Log the port of the remote server in various messages.
2488     PR 48812. [Igor Galić <i galic brainsware org>]
2489
2490  *) mod_reqtimeout: Do not wrongly enforce timeouts for mod_proxy's backend
2491     connections and other protocol handlers (like mod_ftp). [Stefan Fritsch]
2492
2493  *) mod_proxy_ajp: Really regard the operation a success, when the client
2494     aborted the connection. In addition adjust the log message if the client
2495     aborted the connection. [Ruediger Pluem]
2496
2497  *) mod_ssl: Add the 'SSLInsecureRenegotiation' directive, which
2498     allows insecure renegotiation with clients which do not yet
2499     support the secure renegotiation protocol.  [Joe Orton]
2500
2501  *) mod_ssl: Fix a potential I/O hang if a long list of trusted CAs
2502     is configured for client cert auth. PR 46952.  [Joe Orton]
2503
2504  *) core: Only log a 408 if it is no keepalive timeout. PR 39785
2505     [Ruediger Pluem,  Mark Montague <markmont umich.edu>]
2506
2507  *) support/rotatelogs: Add -L option to create a link to the current
2508     log file.  PR 48761 [<lyndon orthanc.ca>, Dan Poirier]
2509
2510  *) mod_ldap: Update LDAPTrustedClientCert to consistently be a per-directory
2511     setting only, matching most of the documentation and examples.
2512     PR 46541 [Paul Reder, Eric Covener]
2513
2514  *) mod_ldap: LDAPTrustedClientCert now accepts CA_DER/CA_BASE64 argument
2515     types previously allowed only in LDAPTrustedGlobalCert. [Eric Covener]
2516
2517  *) mod_negotiation: Preserve query string over multiviews negotiation.
2518     This buglet was fixed for type maps in 2.2.6, but the same issue
2519     affected multiviews and was overlooked.
2520     PR 33112 [Joergen Thomsen <apache jth.net>]
2521
2522  *) mod_ldap: Eliminate a potential crash with multiple LDAPTrustedClientCert
2523     when some are not password-protected. [Eric Covener]
2524
2525  *) Fix startup segfault when the Mutex directive is used but no loaded
2526     modules use httpd mutexes.  PR 48787.  [Jeff Trawick]
2527
2528  *) Proxy: get the headers right in a HEAD request with
2529     ProxyErrorOverride, by checking for an overridden error
2530     before not after going into a catch-all code path.
2531     PR 41646.  [Nick Kew, Stuart Children]
2532
2533  *) support/rotatelogs: Support the simplest log rotation case, log
2534     truncation. Useful when the log is being processed in real time
2535     using a command like tail. [Graham Leggett]
2536
2537  *) support/htcacheclean: Teach it how to write a pid file (modelled on
2538     httpd's writing of a pid file) so that it becomes possible to run
2539     more than one instance of htcacheclean on the same machine.
2540     [Graham Leggett]
2541
2542  *) Log command line on startup, so there's a record of command line
2543     arguments like -f.  PR 48752.  [Dan Poirier]
2544
2545  *) Introduce mod_reflector, a handler capable of reflecting POSTed
2546     request bodies back within the response through the output filter
2547     stack. Can be used to turn an output filter into a web service.
2548     [Graham Leggett]
2549
2550  *) mod_proxy_http: Make sure that when an ErrorDocument is served
2551     from a reverse proxied URL, that the subrequest respects the status
2552     of the original request. This brings the behaviour of proxy_handler
2553     in line with default_handler. PR 47106. [Graham Leggett]
2554
2555  *) Support wildcards in both the directory and file components of
2556     the path specified by the Include directive. [Graham Leggett]
2557
2558  *) mod_proxy, mod_proxy_http: Support remote https proxies
2559     by using HTTP CONNECT.  PR 19188.
2560     [Philippe Dutrueux <lilas evidian.com>, Rainer Jung]
2561
2562  *) apxs: Fix -A and -a options to ignore whitespace in httpd.conf
2563     [Philip M. Gollucci]
2564
2565  *) worker: Don't report server has reached MaxClients until it has.
2566     Add message when server gets within MinSpareThreads of MaxClients.
2567     PR 46996.  [Dan Poirier]
2568
2569  *) mod_session: Session expiry was being initialised, but not updated
2570     on each session save, resulting in timed out sessions when there
2571     should not have been. Fixed. [Graham Leggett]
2572
2573  *) mod_log_config: Add the R option to log the handler used within the
2574     request. [Christian Folini <christian.folini netnea com>]
2575
2576  *) mod_include: Allow fine control over the removal of Last-Modified and
2577     ETag headers within the INCLUDES filter, making it possible to cache
2578     responses if desired. Fix the default value of the SSIAccessEnable
2579     directive.  [Graham Leggett]
2580
2581  *) Add new UnDefine directive to undefine a variable. PR 35350.
2582     [Stefan Fritsch]
2583
2584  *) Make ap_pregsub(), used by AliasMatch and friends, use the same syntax
2585     for regex backreferences as mod_rewrite and mod_include: Remove the use
2586     of '&' as an alias for '$0' and allow to escape any character with a
2587     backslash. PR 48351. [Stefan Fritsch]
2588
2589  *) mod_authnz_ldap: If AuthLDAPCharsetConfig is set, also convert the
2590     password to UTF-8. PR 45318.
2591     [Johannes Müller <joh_m gmx.de>, Stefan Fritsch]
2592
2593  *) ab: Fix calculation of requests per second in HTML output. PR 48594.
2594     [Stefan Fritsch]
2595
2596  *) mod_authnz_ldap: Failures to map a username to a DN, or to check a user
2597     password now result in an informational level log entry instead of
2598     warning level.  [Eric Covener]
2599
2600Changes with Apache 2.3.5
2601
2602  *) SECURITY: CVE-2010-0434 (cve.mitre.org)
2603     Ensure each subrequest has a shallow copy of headers_in so that the
2604     parent request headers are not corrupted.  Eliminates a problematic
2605     optimization in the case of no request body.  PR 48359
2606     [Jake Scott, William Rowe, Ruediger Pluem]
2607
2608  *) Turn static function get_server_name_for_url() into public
2609     ap_get_server_name_for_url() and use it where appropriate. This
2610     fixes mod_rewrite generating invalid URLs for redirects to IPv6
2611     literal addresses. [Stefan Fritsch]
2612
2613  *) mod_ldap: Introduce new config option LDAPTimeout to set the timeout
2614     for LDAP operations like bind and search. [Stefan Fritsch]
2615
2616  *) mod_proxy, mod_proxy_ftp: Move ProxyFtpDirCharset from mod_proxy to
2617     mod_proxy_ftp. [Takashi Sato]
2618
2619  *) mod_proxy, mod_proxy_connect: Move AllowCONNECT from mod_proxy to
2620     mod_proxy_connect. [Takashi Sato]
2621
2622  *) mod_cache: Do an exact match of the keys defined by
2623     CacheIgnoreURLSessionIdentifiers against the querystring instead of
2624     a partial match.  PR 48401.
2625     [Dodou Wang <wangdong.08 gmail.com>, Ruediger Pluem]
2626
2627  *) mod_proxy_balancer: Fix crash in balancer-manager. [Rainer Jung]
2628
2629  *) Core HTTP: disable keepalive when the Client has sent
2630     Expect: 100-continue
2631     but we respond directly with a non-100 response.
2632     Keepalive here led to data from clients continuing being treated as
2633     a new request.
2634     PR 47087 [Nick Kew]
2635
2636  *) Core: reject NULLs in request line or request headers.
2637     PR 43039 [Nick Kew]
2638
2639  *) Core: (re)-introduce -T commandline option to suppress documentroot
2640     check at startup.
2641     PR 41887 [Jan van den Berg <janvdberg gmail.com>]
2642
2643  *) mod_autoindex: support XHTML as equivalent to HTML in IndexOptions,
2644                    ScanHTMLTitles, ReadmeName, HeaderName
2645     PR 48416 [Dmitry Bakshaev <dab18 izhnet.ru>, Nick Kew]
2646
2647  *) Proxy: Fix ProxyPassReverse with relative URL
2648     Derived (slightly erroneously) from PR 38864 [Nick Kew]
2649
2650  *) mod_headers: align Header Edit with Header Set when used on Content-Type
2651     PR 48422 [Cyril Bonté <cyril.bonte free.fr>, Nick Kew>]
2652
2653  *) mod_headers: Enable multi-match-and-replace edit option
2654     PR 46594 [Nick Kew]
2655
2656  *) mod_filter: enable it to act on non-200 responses.
2657     PR 48377 [Nick Kew]
2658
2659Changes with Apache 2.3.4
2660
2661  *) Replace AcceptMutex, LockFile, RewriteLock, SSLMutex, SSLStaplingMutex,
2662     and WatchdogMutexPath with a single Mutex directive.  Add APIs to
2663     simplify setup and user customization of APR proc and global mutexes.
2664     (See util_mutex.h.)  Build-time setting DEFAULT_LOCKFILE is no longer
2665     respected; set DEFAULT_REL_RUNTIMEDIR instead.  [Jeff Trawick]
2666
2667  *) http_core: KeepAlive no longer accepts other than On|Off.
2668     [Takashi Sato]
2669
2670  *) mod_dav: Remove errno from dav_error interface.  Calls to dav_new_error()
2671     and dav_new_error_tag() must be adjusted to add an apr_status_t parameter.
2672     [Jeff Trawick]
2673
2674  *) mod_authnz_ldap: Add AuthLDAPBindAuthoritative to allow Authentication to
2675     try other providers in the case of an LDAP bind failure.
2676     PR 46608 [Justin Erenkrantz, Joe Schaefer, Tony Stevenson]
2677
2678  *) Build: fix --with-module to work as documented
2679     PR 43881 [Gez Saunders <gez.saunders virgin.net>]
2680
2681Changes with Apache 2.3.3
2682
2683  *) SECURITY: CVE-2009-3095 (cve.mitre.org)
2684     mod_proxy_ftp: sanity check authn credentials.
2685     [Stefan Fritsch <sf fritsch.de>, Joe Orton]
2686
2687  *) SECURITY: CVE-2009-3094 (cve.mitre.org)
2688     mod_proxy_ftp: NULL pointer dereference on error paths.
2689     [Stefan Fritsch <sf fritsch.de>, Joe Orton]
2690
2691  *) mod_ssl: enable support for ECC keys and ECDH ciphers.  Tested against
2692     OpenSSL 1.0.0b3.  [Vipul Gupta <vipul.gupta sun.com>, Sander Temme]
2693
2694  *) mod_dav: Include uri when logging a PUT error due to connection abort.
2695     PR 38149. [Stefan Fritsch]
2696
2697  *) mod_dav: Return 409 instead of 500 for a LOCK request if the parent
2698     resource does not exist or is not a collection. PR 43465. [Stefan Fritsch]
2699
2700  *) mod_dav_fs: Return 409 instead of 500 for Litmus test case copy_nodestcoll
2701     (a COPY request where the parent of the destination resource does not
2702     exist). PR 39299. [Stefan Fritsch]
2703
2704  *) mod_dav_fs: Don't delete the whole file if a PUT with content-range failed.
2705     PR 42896. [Stefan Fritsch]
2706
2707  *) mod_dav_fs: Make PUT create files atomically and no longer destroy the
2708     old file if the transfer aborted. PR 39815. [Paul Querna, Stefan Fritsch]
2709
2710  *) mod_dav_fs: Remove inode keyed locking as this conflicts with atomically
2711     creating files. On systems with inode numbers, this is a format change of
2712     the DavLockDB. The old DavLockDB must be deleted on upgrade.
2713     [Stefan Fritsch]
2714
2715  *) mod_log_config: Make ${cookie}C correctly match whole cookie names
2716     instead of substrings. PR 28037. [Dan Franklin <dan dan-franklin.com>,
2717     Stefan Fritsch]
2718
2719  *) vhost: A purely-numeric Host: header should not be treated as a port.
2720     PR 44979 [Nick Kew]
2721
2722  *) mod_ldap: Avoid 500 errors with "Unable to set LDAP_OPT_REFHOPLIMIT option to 5"
2723     when built against openldap by using SDK LDAP_OPT_REFHOPLIMIT defaults unless
2724     LDAPReferralHopLimit is explicitly configured.
2725     [Eric Covener]
2726
2727  *) mod_charset_lite: Honor 'CharsetOptions NoImplicitAdd'.
2728     [Eric Covener]
2729
2730  *) mod_ssl: Add support for OCSP Stapling.  PR 43822.
2731     [Dr Stephen Henson <shenson oss-institute.org>]
2732
2733  *) mod_socache_shmcb: Allow parens in file name if cache size is given.
2734     Fixes SSLSessionCache directive mis-parsing parens in pathname.
2735     PR 47945. [Stefan Fritsch]
2736
2737  *) htpasswd: Improve out of disk space handling. PR 30877. [Stefan Fritsch]
2738
2739  *) htpasswd: Use MD5 hash by default on all platforms. [Stefan Fritsch]
2740
2741  *) mod_sed: Reduce memory consumption when processing very long lines.
2742     PR 48024 [Basant Kumar Kukreja <basant.kukreja sun.com>]
2743
2744  *) ab: Fix segfault in case the argument for -n is a very large number.
2745     PR 47178. [Philipp Hagemeister <oss phihag.de>]
2746
2747  *) Allow ProxyPreserveHost to work in <Proxy> sections. PR 34901.
2748     [Stefan Fritsch]
2749
2750  *) configure: Fix THREADED_MPMS so that mod_cgid is enabled again
2751     for worker MPM. [Takashi Sato]
2752
2753  *) mod_dav: Provide a mechanism to obtain the request_rec and pathname
2754     from the dav_resource. [Jari Urpalainen <jari.urpalainen nokia.com>,
2755     Brian France <brian brianfrance.com>]
2756
2757  *) Build: Use install instead of cp if available on installing
2758     modules to avoid segmentation fault. PR 47951. [hirose31 gmail.com]
2759
2760  *) mod_cache: correctly consider s-maxage in cacheability
2761     decisions.  [Dan Poirier]
2762
2763  *) mod_logio/core: Report more accurate byte counts in mod_status if
2764     mod_logio is loaded. PR 25656. [Stefan Fritsch]
2765
2766  *) mod_ldap: If LDAPSharedCacheSize is too small, try harder to purge
2767     some cache entries and log a warning. Also increase the default
2768     LDAPSharedCacheSize to 500000. This is a more realistic size suitable
2769     for the default values of 1024 for LdapCacheEntries/LdapOpCacheEntries.
2770     PR 46749. [Stefan Fritsch]
2771
2772  *) mod_rewrite: Make sure that a hostname:port isn't fully qualified if
2773     the request is a CONNECT request. [Bill Zajac <billz consultla.com>]
2774
2775  *) mod_cache: Teach CacheEnable and CacheDisable to work from within a
2776     Location section, in line with how ProxyPass works. [Graham Leggett]
2777
2778  *) mod_reqtimeout: New module to set timeouts and minimum data rates for
2779     receiving requests from the client. [Stefan Fritsch]
2780
2781  *) core: Fix potential memory leaks by making sure to not destroy
2782     bucket brigades that have been created by earlier filters.
2783     [Stefan Fritsch]
2784
2785  *) core, mod_deflate, mod_sed: Reduce memory usage by reusing bucket
2786     brigades in several places. [Stefan Fritsch]
2787
2788  *) mod_cache: Fix uri_meets_conditions() so that CacheEnable will
2789     match by scheme, or by a wildcarded hostname. PR 40169
2790     [Peter Grandi <pg_asf asf.for.sabi.co.uk>, Graham Leggett]
2791
2792  *) suxec: Allow to log an error if exec fails by setting FD_CLOEXEC
2793     on the log file instead of closing it. PR 10744. [Nicolas Rachinsky]
2794
2795  *) mod_mime: Make RemoveType override the info from TypesConfig.
2796     PR 38330. [Stefan Fritsch]
2797
2798  *) mod_cache: Introduce the option to run the cache from within the
2799     normal request handler, and to allow fine grained control over
2800     where in the filter chain content is cached. Adds CacheQuickHandler
2801     directive.  [Graham Leggett]
2802
2803  *) core: Treat timeout reading request as 408 error, not 400.
2804     Log 408 errors in access log as was done in Apache 1.3.x.
2805     PR 39785 [Nobutaka Mantani <nobutaka nobutaka.org>,
2806     Stefan Fritsch <sf fritsch.de>, Dan Poirier]
2807
2808  *) mod_ssl: Reintroduce SSL_CLIENT_S_DN, SSL_CLIENT_I_DN, SSL_SERVER_S_DN,
2809     SSL_SERVER_I_DN back to the environment variables to be set by mod_ssl.
2810     [Peter Sylvester <peter.sylvester edelweb.fr>]
2811
2812  *) mod_disk_cache: don't cache incomplete responses, per RFC 2616, 13.8.
2813     PR15866.  [Dan Poirier]
2814
2815  *) ab: ab segfaults in verbose mode on https sites
2816     PR46393.  [Ryan Niebur]
2817
2818  *) mod_dav: Allow other modules to become providers and add resource types
2819     to the DAV response. [Jari Urpalainen <jari.urpalainen nokia.com>,
2820     Brian France <brian brianfrance.com>]
2821
2822  *) mod_dav: Allow other modules to add things to the DAV or Allow headers
2823     of an OPTIONS request. [Jari Urpalainen <jari.urpalainen nokia.com>,
2824     Brian France <brian brianfrance.com>]
2825
2826  *) core: Lower memory usage of core output filter.
2827     [Stefan Fritsch <sf sfritsch.de>]
2828
2829  *) mod_mime: Detect invalid use of MultiviewsMatch inside Location and
2830     LocationMatch sections.  PR47754. [Dan Poirier]
2831
2832  *) mod_request: Make sure the KeptBodySize directive rejects values
2833     that aren't valid numbers. [Graham Leggett]
2834
2835  *) mod_session_crypto: Sanity check should the potentially encrypted
2836     session cookie be too short. [Graham Leggett]
2837
2838  *) mod_session.c: Prevent a segfault when session is added but not
2839     configured. [Graham Leggett]
2840
2841  *) htcacheclean: 19 ways to fail, 1 error message. Fixed. [Graham Leggett]
2842
2843  *) mod_auth_digest: Fail server start when nonce count checking
2844     is configured without shared memory, or md5-sess algorithm is
2845     configured. [Dan Poirier]
2846
2847  *) mod_proxy_connect: The connect method doesn't work if the client is
2848     connecting to the apache proxy through an ssl socket. Fixed.
2849     PR29744. [Brad Boyer, Mark Cave-Ayland, Julian Gilbey, Fabrice Durand,
2850     David Gence, Tim Dodge, Per Gunnar Hans, Emmanuel Elango,
2851     Kevin Croft, Rudolf Cardinal]
2852
2853  *) mod_ssl: The error message when SSLCertificateFile is missing should
2854     at least give the name or position of the problematic virtual host
2855     definition. [Stefan Fritsch sf sfritsch.de]
2856
2857  *) mod_auth_digest: Fix null pointer when qop=none. [Dan Poirier]
2858
2859  *) Add support for HTTP PUT to ab. [Jeff Barnes <jbarnesweb yahoo.com>]
2860
2861  *) mod_headers: generalise the envclause to support expression
2862     evaluation with ap_expr parser [Nick Kew]
2863
2864  *) mod_cache: Introduce the thundering herd lock, a mechanism to keep
2865     the flood of requests at bay that strike a backend webserver as
2866     a cached entity goes stale. [Graham Leggett]
2867
2868  *) mod_auth_digest: Fix usage of shared memory and re-enable it.
2869     PR 16057 [Dan Poirier]
2870
2871  *) Preserve Port information over internal redirects
2872     PR 35999 [Jonas Ringh <jonas.ringh cixit.se>]
2873
2874  *) Proxy: unable to connect to a backend is SERVICE_UNAVAILABLE,
2875     rather than BAD_GATEWAY or (especially) NOT_FOUND.
2876     PR 46971 [evanc nortel.com]
2877
2878  *) Various modules: Do better checking of pollset operations in order to
2879     avoid segmentation faults if they fail. PR 46467
2880     [Stefan Fritsch <sf sfritsch.de>]
2881
2882  *) mod_autoindex: Correctly create an empty cell if the description
2883     for a file is missing. PR 47682 [Peter Poeml <poeml suse.de>]
2884
2885  *) ab: Fix broken error messages after resolver or connect() failures.
2886     [Jeff Trawick]
2887
2888  *) SECURITY: CVE-2009-1890 (cve.mitre.org)
2889     Fix a potential Denial-of-Service attack against mod_proxy in a
2890     reverse proxy configuration, where a remote attacker can force a
2891     proxy process to consume CPU time indefinitely.  [Nick Kew, Joe Orton]
2892
2893  *) SECURITY: CVE-2009-1191 (cve.mitre.org)
2894     mod_proxy_ajp: Avoid delivering content from a previous request which
2895     failed to send a request body. PR 46949 [Ruediger Pluem]
2896
2897  *) htdbm: Fix possible buffer overflow if dbm database has very
2898     long values.  PR 30586 [Dan Poirier]
2899
2900  *) core: Return APR_EOF if request body is shorter than the length announced
2901     by the client. PR 33098 [ Stefan Fritsch <sf sfritsch.de>]
2902
2903  *) mod_suexec: correctly set suexec_enabled when httpd is run by a
2904     non-root user and may have insufficient permissions.
2905     PR 42175 [Jim Radford <radford blackbean.org>]
2906
2907  *) mod_ssl: Fix SSL_*_DN_UID variables to use the 'userID' attribute
2908     type.  PR 45107.  [Michael Ströder <michael stroeder.com>,
2909     Peter Sylvester <peter.sylvester edelweb.fr>]
2910
2911  *) mod_proxy_http: fix case sensitivity checking transfer encoding
2912     PR 47383 [Ryuzo Yamamoto <ryuzo.yamamoto gmail.com>]
2913
2914  *) mod_alias: ensure Redirect issues a valid URL.
2915     PR 44020 [Håkon Stordahl <hakon stordahl.org>]
2916
2917  *) mod_dir: add FallbackResource directive, to enable admin to specify
2918     an action to happen when a URL maps to no file, without resorting
2919     to ErrorDocument or mod_rewrite.  PR 47184 [Nick Kew]
2920
2921  *) mod_cgid: Do not leak the listening Unix socket file descriptor to the
2922     CGI process. PR 47335 [Kornél Pál <kornelpal gmail.com>]
2923
2924  *) mod_rewrite: Remove locking for writing to the rewritelog.
2925     PR 46942 [Dan Poirier <poirier pobox.com>]
2926
2927  *) mod_alias: check sanity in Redirect arguments.
2928     PR 44729 [Sönke Tesch <st kino-fahrplan.de>, Jim Jagielski]
2929
2930  *) mod_proxy_http: fix Host: header for literal IPv6 addresses.
2931     PR 47177 [Carlos Garcia Braschi <cgbraschi gmail.com>]
2932
2933  *) mod_cache: Add CacheIgnoreURLSessionIdentifiers directive to ignore
2934     defined session identifiers encoded in the URL when caching.
2935     [Ruediger Pluem]
2936
2937  *) mod_rewrite: Fix the error string returned by RewriteRule.
2938     RewriteRule returned "RewriteCond: bad flag delimiters" when the 3rd
2939     argument of RewriteRule was not started with "[" or not ended with "]".
2940     PR 45082 [Vitaly Polonetsky <m_vitaly topixoft.com>]
2941
2942  *) Windows: Fix usage message.
2943     [Rainer Jung]
2944
2945  *) apachectl: When passing through arguments to httpd in
2946     non-SysV mode, use the "$@" syntax to preserve arguments.
2947     [Eric Covener]
2948
2949  *) mod_dbd: add DBDInitSQL directive to enable SQL statements to
2950     be run when a connection is opened.  PR 46827
2951     [Marko Kevac <mkevac gmail.com>]
2952
2953  *) mod_cgid: Improve handling of long AF_UNIX socket names (ScriptSock).
2954     PR 47037.  [Jeff Trawick]
2955
2956  *) mod_proxy_ajp: Check more strictly that the backend follows the AJP
2957     protocol. [Mladen Turk]
2958
2959  *) mod_proxy_ajp: Forward remote port information by default.
2960     [Rainer Jung]
2961
2962  *) Allow MPMs to be loaded dynamically, as with most other modules.  Use
2963     --enable-mpms-shared={list|"all"} to enable.  This required changes to
2964     the MPM interfaces.  Removed: mpm.h, mpm_default.h (as an installed
2965     header), APACHE_MPM_DIR, MPM_NAME, ap_threads_per_child,
2966     ap_max_daemons_limit, ap_my_generation, etc.  ap_mpm_query() can't be
2967     called until after the register-hooks phase.  [Jeff Trawick]
2968
2969  *) mod_ssl: Add SSLProxyCheckPeerExpire and SSLProxyCheckPeerCN directives
2970     to enable stricter checking of remote server certificates.
2971     [Ruediger Pluem]
2972
2973  *) ab: Fix a 100% CPU loop on platforms where a failed non-blocking connect
2974     returns EINPROGRESS and a subsequent poll() returns only POLLERR.
2975     Observed on HP-UX.  [Eric Covener]
2976
2977  *) Remove broken support for BeOS, TPF, and even older platforms such
2978     as A/UX, Next, and Tandem.  [Jeff Trawick]
2979
2980  *) mod_proxy_ftp: Add ProxyFtpListOnWildcard directive to allow files with
2981     globbing characters to be retrieved instead of converted into a
2982     directory listing.  PR 46789 [Dan Poirier <poirier pobox.com>]
2983
2984  *) Provide ap_retained_data_create()/ap_retained_data_get() for preservation
2985     of module state across unload/load.  [Jeff Trawick]
2986
2987  *) mod_substitute: Fix a memory leak. PR 44948
2988     [Dan Poirier <poirier pobox.com>]
2989
2990Changes with Apache 2.3.2
2991
2992  *) mod_mime_magic: Fix detection of compressed content. [Rainer Jung]
2993
2994  *) mod_negotiation: Escape pathes of filenames in 406 responses to avoid
2995     HTML injections and HTTP response splitting.  PR 46837.
2996     [Geoff Keating <geoffk apple.com>]
2997
2998  *) mod_ssl: add support for type-safe STACK constructs in OpenSSL
2999     development HEAD.  PR 45521.  [Kaspar Brand, Sander Temme]
3000
3001  *) ab: Fix maintenance of the pollset to resolve EALREADY errors
3002     with kqueue (BSD/OS X) and excessive CPU with event ports (Solaris).
3003     PR 44584.  Use APR_POLLSET_NOCOPY for better performance with some
3004     pollset implementations.  [Jeff Trawick]
3005
3006  *) mod_disk_cache: The module now turns off sendfile support if
3007     'EnableSendfile off' is defined globally. [Lars Eilebrecht]
3008
3009  *) mod_deflate: Adjust content metadata before bailing out on 304
3010     responses so that the metadata does not differ from 200 response.
3011     [Roy T. Fielding]
3012
3013  *) mod_deflate: Fix creation of invalid Etag headers. We now make sure
3014     that the Etag value is properly quoted when adding the gzip marker.
3015     PR 39727, 45023. [Lars Eilebrecht, Roy T. Fielding]
3016
3017  *) Added 20x22 icons for ODF, SVG, and XML documents.  PR 37185.
3018     [Peter Harlow]
3019
3020  *) Disabled DefaultType directive and removed ap_default_type()
3021     from core.  We now exclude Content-Type from responses for which
3022     a media type has not been configured via mime.types, AddType,
3023     ForceType, or some other mechanism. PR 13986. [Roy T. Fielding]
3024
3025  *) mod_rewrite: Add IPV6 variable to RewriteCond
3026     [Ryan Phillips <ryan-apache trolocsis.com>]
3027
3028  *) core: Enhance KeepAliveTimeout to support a value in milliseconds.
3029     PR 46275. [Takashi Sato]
3030
3031  *) rotatelogs: Allow size units B, K, M, G and combination of
3032     time and size based rotation. [Rainer Jung]
3033
3034  *) rotatelogs: Add flag for verbose (debug) output. [Rainer Jung]
3035
3036  *) mod_ssl: Fix merging of SSLRenegBufferSize directive. PR 46508
3037     [<tlhackque yahoo.com>]
3038
3039  *) core: Translate the the status line to ASCII on EBCDIC platforms in
3040     ap_send_interim_response() and for locally generated "100 Continue"
3041     responses.  [Eric Covener]
3042
3043  *) prefork: Fix child process hang during graceful restart/stop in
3044     configurations with multiple listening sockets.  PR 42829.  [Joe Orton,
3045     Jeff Trawick]
3046
3047  *) mod_session_crypto: Ensure that SessionCryptoDriver can only be
3048     set in the global scope. [Graham Leggett]
3049
3050  *) mod_ext_filter: We need to detect failure to startup the filter
3051     program (a mangled response is not acceptable).  Fix to detect
3052     failure, and offer configuration option either to abort or
3053     to remove the filter and continue.
3054     PR 41120 [Nick Kew]
3055
3056  *) mod_session_crypto: Rewrite the session_crypto module against the
3057     apr_crypto API. [Graham Leggett]
3058
3059  *) mod_auth_form: Fix a pool lifetime issue, don't remove the subrequest
3060     until the main request is cleaned up. [Graham Leggett]
3061
3062Changes with Apache 2.3.1
3063
3064  *) ap_slotmem: Add in new slot-based memory access API impl., including
3065     2 providers (mod_sharedmem and mod_plainmem) [Jim Jagielski,
3066     Jean-Frederic Clere, Brian Akins <brian.akins turner.com>]
3067
3068  *) mod_include: support generating non-ASCII characters as entities in SSI
3069     PR 25202 [Nick Kew]
3070
3071  *) core/utils: Enhance ap_escape_html API to support escaping non-ASCII chars
3072     PR 25202 [Nick Kew]
3073
3074  *) mod_rewrite: fix "B" flag breakage by reverting r5589343
3075    PR 45529 [Bob Ionescu <bobsiegen googlemail.com>]
3076
3077  *) CGI: return 504 (Gateway timeout) rather than 500 when a script
3078     times out before returning status line/headers.
3079     PR 42190 [Nick Kew]
3080
3081  *) mod_cgid: fix segfault problem on solaris.
3082     PR 39332 [Masaoki Kobayashi <masaoki techfirm.co.jp>]
3083
3084  *) mod_proxy_scgi: Added. [André Malo]
3085
3086  *) mod_cache: Introduce 'no-cache' per-request environment variable
3087     to prevent the saving of an otherwise cacheable response.
3088     [Eric Covener]
3089
3090  *) mod_rewrite: Introduce DiscardPathInfo|DPI flag to stop the troublesome
3091     way that per-directory rewrites append the previous notion of PATH_INFO
3092     to each substitution before evaluating subsequent rules.
3093     PR 38642 [Eric Covener]
3094
3095  *) mod_cgid: Do not add an empty argument when calling the CGI script.
3096     PR 46380 [Ruediger Pluem]
3097
3098  *) scoreboard: Remove unused sb_type from process_score.
3099     [Torsten Foertsch <torsten.foertsch gmx.net>, Chris Darroch]
3100
3101  *) mod_ssl: Add SSLRenegBufferSize directive to allow changing the
3102     size of the buffer used for the request-body where necessary
3103     during a per-dir renegotiation.  PR 39243.  [Joe Orton]
3104
3105  *) mod_proxy_fdpass: New module to pass a client connection over to a separate
3106     process that is reading from a unix daemon socket.
3107
3108  *) mod_ssl: Improve environment variable extraction to be more
3109     efficient and to correctly handle DNs with duplicate tags.
3110     PR 45975.  [Joe Orton]
3111
3112  *) Remove the obsolete serial attribute from the RPM spec file. Compile
3113     against the external pcre. Add missing binaries fcgistarter, and
3114     mod_socache* and mod_session*. [Graham Leggett]
3115
3116Changes with Apache 2.3.0
3117
3118  *) mod_ratelimit: New module to do bandwidth rate limiting. [Paul Querna]
3119
3120  *) Remove X-Pad header which was added as a work around to a bug in
3121     Netscape 2.x to 4.0b2. [Takashi Sato <takashi lans-tv.com>]
3122
3123  *) Add DTrace Statically Defined Tracing (SDT) probes.
3124    [Theo Schlossnagle <jesus omniti.com>, Paul Querna]
3125
3126  *) mod_proxy_balancer: Move all load balancing implementations
3127     as individual, self-contained mod_proxy submodules under
3128     modules/proxy/balancers [Jim Jagielski]
3129
3130  *) Rename APIs to include ap_ prefix:
3131        find_child_by_pid -> ap_find_child_by_pid
3132        suck_in_APR -> ap_suck_in_APR
3133        sys_privileges_handlers -> ap_sys_privileges_handlers
3134        unixd_accept -> ap_unixd_accept
3135        unixd_config -> ap_unixd_config
3136        unixd_killpg -> ap_unixd_killpg
3137        unixd_set_global_mutex_perms -> ap_unixd_set_global_mutex_perms
3138        unixd_set_proc_mutex_perms -> ap_unixd_set_proc_mutex_perms
3139        unixd_set_rlimit -> ap_unixd_set_rlimit
3140     [Paul Querna]
3141
3142  *) mod_lbmethod_heartbeat: New module to load balance mod_proxy workers
3143     based on heartbeats. [Paul Querna]
3144
3145  *) mod_heartmonitor: New module to collect heartbeats, and write out a file
3146     so that other modules can load balance traffic as needed. [Paul Querna]
3147
3148  *) mod_heartbeat: New module to generate multicast heartbeats to know if a
3149     server is online. [Paul Querna]
3150
3151  *) mod_buffer: Honour the flush bucket and flush the buffer in the
3152     input filter. Make sure that metadata buckets are written to
3153     the buffer, not to the final brigade. [Graham Leggett]
3154
3155  *) mod_buffer: Optimise the buffering of heap buckets when the heap
3156     buckets stay exactly APR_BUCKET_BUFF_SIZE long. [Graham Leggett,
3157     Ruediger Pluem]
3158
3159  *) mod_buffer: Optional support for buffering of the input and output
3160     filter stacks. Can collapse many small buckets into fewer larger
3161     buckets, and prevents excessively small chunks being sent over
3162     the wire. [Graham Leggett]
3163
3164  *) mod_privileges: new module to make httpd on Solaris privileges-aware
3165     and to enable different virtualhosts to run with different
3166     privileges and Unix user/group IDs [Nick Kew]
3167
3168  *) mod_mem_cache: this module has been removed. [William Rowe]
3169
3170  *) authn/z: Remove mod_authn_default and mod_authz_default.
3171     [Chris Darroch]
3172
3173  *) authz: Fix handling of authz configurations, make default authz
3174     logic replicate 2.2.x authz logic, and replace <Satisfy*>, Reject,
3175     and AuthzMergeRules directives with Match, <Match*>, and AuthzMerge
3176     directives.  [Chris Darroch]
3177
3178  *) mod_authn_core: Prevent crash when provider alias created to
3179     provider which is not yet registered.  [Chris Darroch]
3180
3181  *) mod_authn_core: Add AuthType of None to support disabling
3182     authentication.  [Chris Darroch]
3183
3184  *) core: Allow <Limit> and <LimitExcept> directives to nest, and
3185     constrain their use to conform with that of other access control
3186     and authorization directives.  [Chris Darroch]
3187
3188  *) unixd: turn existing code into a module, and turn the set user/group
3189     and chroot into a child_init function. [Nick Kew]
3190
3191  *) mod_dir: Support "DirectoryIndex disabled"
3192     Suggested By André Warnier <aw ice-sa.com> [Eric Covener]
3193
3194  *) mod_ssl: Send Content-Type application/ocsp-request for POST requests to
3195     OSCP responders. PR 46014 [Dr Stephen Henson <steve openssl.org>]
3196
3197  *) mod_authnz_ldap: don't return NULL-valued environment variables to
3198     other modules.  PR 39045 [Francois Pesce <francois.pesce gmail.com>]
3199
3200  *) Don't adjust case in pathname components that are not of interest
3201     to mod_mime.  Fixes mod_negotiation's use of such components.
3202     PR 43250 [Basant Kumar Kukreja <basant.kukreja sun.com>]
3203
3204  *) Be tolerant in what you accept - accept slightly broken
3205     status lines from a backend provided they include a valid status code.
3206     PR 44995 [Rainer Jung <rainer.jung kippdata.de>]
3207
3208  *) New module mod_sed: filter Request/Response bodies through sed
3209     [Basant Kumar Kukreja <basant.kukreja sun.com>]
3210
3211  *) mod_auth_form: Make sure that basic authentication is correctly
3212     faked directly after login. [Graham Leggett]
3213
3214  *) mod_session_cookie, mod_session_dbd: Make sure cookies are set both
3215     within the output headers and error output headers, so that the
3216     session is maintained across redirects. [Graham Leggett]
3217
3218  *) mod_auth_form: Make sure the logged in user is populated correctly
3219     after a form login. Fixes a missing REMOTE_USER variable directly
3220     following a login. [Graham Leggett]
3221
3222  *) mod_session_cookie: Make sure that cookie attributes are correctly
3223     included in the blank cookie when cookies are removed. This fixes an
3224     inability to log out when using mod_auth_form. [Graham Leggett]
3225
3226  *) mod_session: Prevent a segfault when a CGI script sets a cookie with a
3227     null value. [David Shane Holden <dpejesh apache.org>]
3228
3229  *) core, authn/z: Determine registered authn/z providers directly in
3230     ap_setup_auth_internal(), which allows optional functions that just
3231     wrapped ap_list_provider_names() to be removed from authn/z modules.
3232     [Chris Darroch]
3233
3234  *) authn/z: Convert common provider version strings to macros.
3235     [Chris Darroch]
3236
3237  *) core: When testing for slash-terminated configuration paths in
3238     ap_location_walk(), don't look past the start of an empty string
3239     such as that created by a <Location ""> directive.
3240     [Chris Darroch]
3241
3242  *) core, mod_proxy: If a kept_body is present, it becomes safe for
3243     subrequests to support message bodies. Make sure that safety
3244     checks within the core and within the proxy are not triggered
3245     when kept_body is present. This makes it possible to embed
3246     proxied POST requests within mod_include. [Graham Leggett]
3247
3248  *) mod_auth_form: Make sure the input filter stack is properly set
3249     up before reading the login form. Make sure the kept body filter
3250     is correctly inserted to ensure the body can be read a second
3251     time safely should the authn be successful. [Graham Leggett,
3252     Ruediger Pluem]
3253
3254  *) mod_request: Insert the KEPT_BODY filter via the insert_filter
3255     hook instead of during fixups. Add a safety check to ensure the
3256     filters cannot be inserted more than once. [Graham Leggett,
3257     Ruediger Pluem]
3258
3259  *) ap_cache_cacheable_headers_out() will (now) always
3260     merge an error headers _before_ clearing them and _before_
3261     merging in the actual entity headers and doing normal
3262     hop-by-hop cleansing. [Dirk-Willem van Gulik].
3263
3264  *) cache: retire ap_cache_cacheable_hdrs_out() which was used
3265     for both in- and out-put headers; and replace it by a single
3266     ap_cache_cacheable_headers() wrapped in a in- and out-put
3267     specific ap_cache_cacheable_headers_in()/out(). The latter
3268     which will also merge error and ensure content-type. To keep
3269     cache modules consistent with ease. This API change bumps
3270     up the minor MM by one [Dirk-Willem van Gulik].
3271
3272  *) Move the KeptBodySize directive, kept_body filters and the
3273     ap_parse_request_body function out of the http module and into a
3274     new module called mod_request, reducing the size of the core.
3275     [Graham Leggett]
3276
3277  *) mod_dbd: Handle integer configuration directive parameters with a
3278     dedicated function.
3279
3280  *) Change the directives within the mod_session* modules to be valid
3281     both inside and outside the location/directory sections, as
3282     suggested by wrowe. [Graham Leggett]
3283
3284  *) mod_auth_form: Add a module capable of allowing end users to log
3285     in using an HTML form, storing the credentials within mod_session.
3286     [Graham Leggett]
3287
3288  *) Add a function to the http filters that is able to parse an HTML
3289     form request with the type of application/x-www-form-urlencoded.
3290     [Graham Leggett]
3291
3292  *) mod_session_crypto: Initialise SSL in the post config hook.
3293     [Ruediger Pluem, Graham Leggett]
3294
3295  *) mod_session_dbd: Add a session implementation capable of storing
3296     session information in a SQL database via the dbd interface. Useful
3297     for sites where session privacy is important. [Graham Leggett]
3298
3299  *) mod_session_crypto: Add a session encoding implementation capable
3300     of encrypting and decrypting sessions wherever they may be stored.
3301     Introduces a level of privacy when sessions are stored on the
3302     browser. [Graham Leggett]
3303
3304  *) mod_session_cookie: Add a session implementation capable of storing
3305     session information within cookies on the browser. Useful for high
3306     volume sites where server bound sessions are too resource intensive.
3307     [Graham Leggett]
3308
3309  *) mod_session: Add a generic session interface to unify the different
3310     attempts at saving persistent sessions across requests.
3311     [Graham Leggett]
3312
3313  *) core, authn/z: Avoid calling access control hooks for internal requests
3314     with configurations which match those of initial request.  Revert to
3315     original behaviour (call access control hooks for internal requests
3316     with URIs different from initial request) if any access control hooks or
3317     providers are not registered as permitting this optimization.
3318     Introduce wrappers for access control hook and provider registration
3319     which can accept additional mode and flag data.  [Chris Darroch]
3320
3321  *) Introduced ap_expr API for expression evaluation.
3322     This is adapted from mod_include, which is the first module
3323     to use the new API.
3324     [Nick Kew]
3325
3326  *) mod_authz_dbd: When redirecting after successful login/logout per
3327     AuthzDBDRedirectQuery, do not report authorization failure, and use
3328     first row returned by database query instead of last row.
3329     [Chris Darroch]
3330
3331  *) mod_ldap: Correctly return all requested attribute values
3332     when some attributes have a null value.
3333     PR 44560 [Anders Kaseorg <anders kaseorg.com>]
3334
3335  *) core: check symlink ownership if both FollowSymlinks and
3336     SymlinksIfOwnerMatch are set [Nick Kew]
3337
3338  *) core: fix origin checking in SymlinksIfOwnerMatch
3339     PR 36783 [Robert L Mathews <rob-apache.org.bugs tigertech.net>]
3340
3341  *) Activate mod_cache, mod_file_cache and mod_disk_cache as part of the
3342     'most' set for '--enable-modules' and '--enable-shared-mods'. Include
3343     mod_mem_cache in 'all' as well. [Dirk-Willem van Gulik]
3344
3345  *) Also install mod_so.h, mod_rewrite.h and mod_cache.h; as these
3346     contain public function declarations which are useful for
3347     third party module authors. PR 42431 [Dirk-Willem van Gulik].
3348
3349  *) mod_dir, mod_negotiation: pass the output filter information
3350     to newly created sub requests; as these are later on used
3351     as true requests with an internal redirect. This allows for
3352     mod_cache et.al. to trap the results of the redirect.
3353     [Dirk-Willem van Gulik, Ruediger Pluem]
3354
3355  *) mod_ldap: Add support (taking advantage of the new APR capability)
3356     for ldap rebind callback while chasing referrals. This allows direct
3357     searches on LDAP servers (in particular MS Active Directory 2003+)
3358     using referrals without the use of the global catalog.
3359     PRs 26538, 40268, and 42557 [Paul J. Reder]
3360
3361  *) ApacheMonitor.exe: Introduce --kill argument for use by the
3362     installer.  This will permit the installation tool to remove
3363     all running instances before attempting to remove the .exe.
3364     [William Rowe]
3365
3366  *) mod_ssl: Add support for OCSP validation of client certificates.
3367     PR 41123.  [Marc Stern <marc.stern approach.be>, Joe Orton]
3368
3369  *) mod_serf: New module for Reverse Proxying. [Paul Querna]
3370
3371  *) core: Add the option to keep aside a request body up to a certain
3372     size that would otherwise be discarded, to be consumed by filters
3373     such as mod_include. When enabled for a directory, POST requests
3374     to shtml files can be passed through to embedded scripts as POST
3375     requests, rather being downgraded to GET requests. [Graham Leggett]
3376
3377  *) mod_ssl: Fix TLS upgrade (RFC 2817) support.  PR 41231.  [Joe Orton]
3378
3379  *) scoreboard: Correctly declare ap_time_process_request.
3380     PR 43789 [Tom Donovan <Tom.Donovan acm.org>]
3381
3382  *) core; scoreboard: ap_get_scoreboard_worker(sbh) now takes the sbh member
3383     from the connection rec, ap_get_scoreboard_worker(proc, thread) will now
3384     provide the unusual legacy lookup.  [William Rowe]
3385
3386  *) mpm winnt: fix null pointer dereference
3387     PR 42572 [Davi Arnaut]
3388
3389  *) mod_authnz_ldap, mod_authn_dbd: Tidy up the code to expose authn
3390     parameters to the environment. Improve portability to
3391     EBCDIC machines by using apr_toupper(). [Martin Kraemer]
3392
3393  *) mod_ldap, mod_authnz_ldap: Add support for nested groups (i.e. the ability
3394     to authorize an authenticated user via a "require ldap-group X" directive
3395     where the user is not in group X, but is in a subgroup contained in X.
3396     PR 42891 [Paul J. Reder]
3397
3398  *) mod_ssl: Add support for caching SSL Sessions in memcached. [Paul Querna]
3399
3400  *) apxs: Enhance -q flag to print all known variables and their values
3401     when invoked without variable name(s).
3402     [William Rowe, Sander Temme]
3403
3404  *) apxs: Eliminate run-time check for mod_so.  PR 40653.
3405     [David M. Lee <dmlee crossroads.com>]
3406
3407  *) beos MPM: Create pmain pool and run modules' child_init hooks when
3408     entering ap_mpm_run(), then destroy pmain when exiting ap_mpm_run().
3409     [Chris Darroch]
3410
3411  *) netware MPM: Destroy pmain pool when exiting ap_mpm_run() so that
3412     cleanups registered in modules' child_init hooks are performed.
3413     [Chris Darroch]
3414
3415  *) Fix issue which could cause error messages to be written to access logs
3416     on Win32.  PR 40476.  [Tom Donovan <Tom.Donovan acm.org>]
3417
3418  *) The LockFile directive, which specifies the location of
3419     the accept() mutex lockfile, is deprecated. Instead, the
3420     AcceptMutex directive now takes an optional lockfile
3421     location parameter, ala SSLMutex. [Jim Jagielski]
3422
3423  *) mod_authn_dbd: Export any additional columns queried in the SQL select
3424     into the environment with the name AUTHENTICATE_<COLUMN>. This brings
3425     mod_authn_dbd behaviour in line with mod_authnz_ldap. [Graham Leggett]
3426
3427  *) mod_dbd: Key the storage of prepared statements on the hex string
3428     value of server_rec, rather than the server name, as the server name
3429     may change (eg when the server name is set) at any time, causing
3430     weird behaviour in modules dependent on mod_dbd. [Graham Leggett]
3431
3432  *) mod_proxy_fcgi: Added win32 build. [Mladen Turk]
3433
3434  *) sendfile_nonblocking() takes the _brigade_ as an argument, gets
3435     the first bucket from the brigade, finds it not to be a FILE
3436     bucket and barfs. The fix is to pass a bucket rather than a brigade.
3437     [Niklas Edmundsson <nikke acc.umu.se>]
3438
3439  *) mod_rewrite: support rewritemap by SQL query [Nick Kew]
3440
3441  *) ap_get_server_version() has been removed.  Third-party modules must
3442     now use ap_get_server_banner() or ap_get_server_description().
3443     [Jeff Trawick]
3444
3445  *) All MPMs: Introduce a check_config phase between pre_config and
3446     open_logs, to allow modules to review interdependent configuration
3447     directive values and adjust them while messages can still be logged
3448     to the console.  Handle relevant MPM directives during this phase
3449     and format messages for both the console and the error log, as
3450     appropriate.  [Chris Darroch]
3451
3452  *) core: Do not allow internal redirects like the DirectoryIndex of mod_dir
3453     to circumvent the symbolic link checks imposed by FollowSymLinks and
3454     SymLinksIfOwnerMatch. [Nick Kew, Ruediger Pluem, William Rowe]
3455
3456  *) New SSLLogLevelDebugDump [ None (default) | IO (not bytes) | Bytes ]
3457     configures the I/O Dump of SSL traffic, when LogLevel is set to Debug.
3458     The default is none as this is far greater debugging resolution than
3459     the typical administrator is prepared to untangle.  [William Rowe]
3460
3461  *) mod_disk_cache: If possible, check if the size of an object to cache is
3462     within the configured boundaries before actually saving data.
3463     [Niklas Edmundsson <nikke acc.umu.se>]
3464
3465  *) Worker and event MPMs: Remove improper scoreboard updates which were
3466     performed in the event of a fork() failure.  [Chris Darroch]
3467
3468  *) Add support for fcgi:// proxies to mod_rewrite.
3469     [Markus Schiegl <ms schiegl.com>]
3470
3471  *) Remove incorrect comments from scoreboard.h regarding conditional
3472     loading of worker_score structure with mod_status, and remove unused
3473     definitions relating to old life_status field.
3474     [Chris Darroch <chrisd pearsoncmg.com>]
3475
3476  *) Remove allocation of memory for unused array of lb_score pointers
3477     in ap_init_scoreboard().  [Chris Darroch <chrisd pearsoncmg.com>]
3478
3479  *) Add mod_proxy_fcgi, a FastCGI back end for mod_proxy.
3480     [Garrett Rooney, Jim Jagielski, Paul Querna]
3481
3482  *) Event MPM: Fill in the scoreboard's tid field. PR 38736.
3483     [Chris Darroch <chrisd pearsoncmg.com>]
3484
3485  *) mod_charset_lite: Remove Content-Length when output filter can
3486     invalidate it.  Warn when input filter can invalidate it.
3487     [Jeff Trawick]
3488
3489  *) Authz: Add the new module mod_authn_core that will provide common
3490     authn directives such as 'AuthType', 'AuthName'.  Move the directives
3491     'AuthType' and 'AuthName' out of the core module and merge mod_authz_alias
3492     into mod_authn_core. [Brad Nicholes]
3493
3494  *) Authz: Move the directives 'Order', 'Allow', 'Deny' and 'Satisfy'
3495     into the new module mod_access_compat which can be loaded to provide
3496     support for these directives.
3497     [Brad Nicholes]
3498
3499  *) Authz: Move the 'Require' directive from the core module as well as
3500     add the directives '<SatisfyAll>', '<SatisfyOne>', '<RequireAlias>'
3501     and 'Reject' to mod_authz_core. The new directives introduce 'AND/OR'
3502     logic into the authorization processing. [Brad Nicholes]
3503
3504  *) Authz: Add the new module mod_authz_core which acts as the
3505     authorization provider vector and contains common authz
3506     directives. [Brad Nicholes]
3507
3508  *) Authz: Renamed mod_authz_dbm authz providers from 'group' and
3509     'file-group' to 'dbm-group' and 'dbm-file-group'. [Brad Nicholes]
3510
3511  *) Authz: Added the new authz providers 'env', 'ip', 'host', 'all' to handle
3512     host-based access control provided by mod_authz_host and invoked
3513     through the 'Require' directive. [Brad Nicholes]
3514
3515  *) Authz: Convert all of the authz modules from hook based to
3516     provider based. [Brad Nicholes]
3517
3518  *) mod_cache: Add CacheMinExpire directive to set the minimum time in
3519     seconds to cache a document.
3520     [Brian Akins <brian.akins turner.com>, Ruediger Pluem]
3521
3522  *) mod_authz_dbd: SQL authz with Login/Session support [Nick Kew]
3523
3524  *) Fix typo in ProxyStatus syntax error message.
3525     [Christophe Jaillet <christophe.jaillet wanadoo.fr>]
3526
3527  *) Asynchronous write completion for the Event MPM.  [Brian Pane]
3528
3529  *) Added an End-Of-Request bucket type.  The logging of a request and
3530     the freeing of its pool are now done when the EOR bucket is destroyed.
3531     This has the effect of delaying the logging until right after the last
3532     of the response is sent; ap_core_output_filter() calls the access logger
3533     indirectly when it destroys the EOR bucket.  [Brian Pane]
3534
3535  *) Rewrite of logresolve support utility: IPv6 addresses are now supported
3536     and the format of statistical output has changed. [Colm MacCarthaigh]
3537
3538  *) Rewrite of ap_coreoutput_filter to do nonblocking writes  [Brian Pane]
3539
3540  *) Added new connection states for handler and write completion
3541     [Brian Pane]
3542
3543  *) mod_cgid: Refuse to work on Solaris 10 due to OS bugs.  PR 34264.
3544     [Justin Erenkrantz]
3545
3546  *) Teach mod_ssl to use arbitrary OIDs in an SSLRequire directive,
3547     allowing string-valued client certificate attributes to be used for
3548     access control, as in: SSLRequire "value" in OID("1.3.6.1.4.1.18060.1")
3549     [Martin Kraemer, David Reid]
3550
3551  [Apache 2.3.0-dev includes those bug fixes and changes with the
3552   Apache 2.2.xx tree as documented, and except as noted, below.]
3553
3554Changes with Apache 2.2.x and later:
3555
3556  *) http://svn.apache.org/viewvc/httpd/httpd/branches/2.2.x/CHANGES?view=markup
3557
3558Changes with Apache 2.0.x and later:
3559
3560  *) http://svn.apache.org/viewvc/httpd/httpd/branches/2.0.x/CHANGES?view=markup
3561
3562