2 Changes with Apache 2.5.0
4 *) Allow the argument to <IfFile>, <IfDefine>, <IfSection>, <IfDirective>,
5 and <IfModule> to be quoted. This is primarily for the benefit of
6 <IfFile>. [Eric Covener]
8 *) Introduce request taint checking framework to prevent privilege
9 hijacking through .htaccess. [Nick Kew]
11 *) core: Disallow multiple Listen on the same IP:port when listener buckets
12 are configured (ListenCoresBucketsRatio > 0), consistently with the single
13 bucket case (default), thus avoiding the leak of the corresponding socket
14 descriptors on graceful restart. [Yann Ylavic]
16 *) Add <IfDirective> and <IfSection> directives. [Joe Orton]
18 *) mod_syslog: Support use of optional "tag" in syslog entries.
19 PR 60525. [Ben Rubson <ben.rubson gmail.com>, Jim Jagielski]
21 *) When using mod_status with the Event MPM, report the number of requests
22 associated with an active connection in the "ACC" field. Previously
23 zero was always reported with this MPM. PR60647. [Eric Covener]
25 *) mod_proxy_hcheck: Don't validate timed out responses. [Yann Ylavic]
27 *) mod_remoteip: Add support for PROXY protocol (code donated by Cloudzilla).
28 Add ability for PROXY protocol processing to be optional to donated code.
29 See also: http://www.haproxy.org/download/1.5/doc/proxy-protocol.txt
30 [Cloudzilla/roadrunner2@GitHub, Jim Jagielski, Daniel Ruggeri]
32 *) mod_remoteip: When overriding the useragent address from X-Forwarded-For,
33 zero out what had been initialized as the connection-level port. PR59931.
34 [Hank Ibell <hwibell gmail.com>]
36 *) mod_proxy_wstunnel: Reliably run before mod_proxy_http.
39 *) mod_proxy_protocol: Add server-side, front-end support for PROXY PROTOCOL
40 (http://blog.haproxy.com/haproxy/proxy-protocol/). [roadrunner2]
42 *) http: Allow unknown response status' lines returned in the form of
43 "HTTP/x.x xxx Status xxx". [Yann Ylavic]
45 *) core: Add <IfFile> configuration section to allow any file on disk to be
46 used as a conditional. [Edward Lu, Eric Covener]
48 *) event: Avoid listener periodic wake ups by using the pollset wake-ability
49 when available. PR 57399. [Yann Ylavic, Luca Toscano]
51 *) mod_crypto: Add the all purpose crypto filters with support for HLS.
54 *) core: Drop an invalid Last-Modified header value coming
55 from a FCGI/CGI script instead of replacing it with Unix epoch.
56 Warn the users about Last-Modified header value replacements
57 and violations of the RFC.
58 [Yann Ylavic, Luca Toscano, William Rowe, Jacob Champion]
60 *) mod_dav: Allow other modules to become providers and add ACLs
62 [Jari Urpalainen <jari.urpalainen nokia.com>, Graham Leggett]
64 *) mod_dav: Add dav_begin_multistatus, dav_send_one_response,
65 dav_finish_multistatus, dav_send_multistatus, dav_handle_err,
66 dav_failed_proppatch, dav_success_proppatch to mod_dav.h.
67 [Jari Urpalainen <jari.urpalainen nokia.com>, Graham Leggett]
69 *) mod_proxy, mod_ssl: Handle SSLProxy* directives in <Proxy> sections,
70 allowing per backend TLS configuration. [Yann Ylavic]
72 *) core: explicitly exclude 'h2' from protocols announced via an Upgrade:
73 header as commanded by http-wg. [Stefan Eissing]
75 *) mod_proxy_ajp: Add "secret" parameter to proxy workers to implement legacy
76 AJP13 authentication. PR 53098. [Dmitry A. Bakshaev <dab1818 gmail com>]
78 *) mpm: Generalise the ap_mpm_register_socket functions to accept pipes
79 or sockets. [Graham Leggett]
81 *) core: Extend support for setting aside data from the network input filter
82 to any connection or request input filter. [Graham Leggett]
84 *) core: Split ap_create_request() from ap_read_request(). [Graham Leggett]
86 *) mod_auth_digest: Fix compatibility with expression-based Authname. PR59039.
89 *) mpm: Add a complete_connection hook that confirms whether an MPM is allowed
90 to leave the WRITE_COMPLETION phase. Move filter code out of the MPMs.
93 *) core: Added support for HTTP code 451. PR58985.
94 [Yehuda Katz <yehuda ymkatz.net>, Jim Jagielski]
96 *) mod_filter: Fix AddOutputFilterByType with non-content-level filters.
97 PR58856 [Micha Lenk <micha lenk.info>]
99 *) mod_cache: Consider Cache-Control: s-maxage in expiration
100 calculations. [Eric Covener]
102 *) mod_cache: Allow caching of responses with an Expires header
103 in the past that also has Cache-Control: max-age or s-maxage.
104 PR55156. [Eric Covener]
106 *) Added many log numbers to log statements that had none.
108 *) mod_session: Introduce SessionExpiryUpdateInterval which allows to
109 configure the session/cookie expiry's update interval. PR 57300.
110 [Paul Spangler <paul.spangler ni.com>]
112 *) core: Extend support for asynchronous write completion from the
113 network filter to any connection or request filter. [Graham Leggett]
115 *) mod_auth_digest: remove AuthDigestEnableQueryStringHack which is no
116 more documented since dec 2012 (r1415960). [Christophe Jaillet]
118 *) mod_charset_lite: On EBCDIC platforms, make sure mod_charset_lite runs
119 after other resource-level filters. [Eric Covener]
121 *) http: Don't remove the Content-Length of zero from a HEAD response if
122 it comes from an origin server, module or script. [Yann Ylavic]
124 *) http: Add support for RFC2324/RFC7168. [Graham Leggett]
126 *) mod_rewrite: Add support for starting External Rewriting Programs
127 as non-root user on UNIX systems by specifying username and group name
128 as third argument of RewriteMap directive. [Jan Kaluza]
130 *) mod_authn_core: Add expression support to AuthName and AuthType.
133 *) suexec: Filter out the HTTP_PROXY environment variable because it is
134 treated as alias for http_proxy by some programs. [Stefan Fritsch]
136 *) mod_proxy_http: Don't establish or reuse a backend connection before pre-
137 fetching the request body, so to minimize the delay between it is supposed
138 to be alive and the first bytes sent: this is a best effort to prevent the
139 backend from closing because of idle or keepalive timeout in the meantime.
140 Also, handle a new "proxy-flushall" environment variable which allows to
141 flush any forwarded body data immediately. PR 56541+37920. [Yann Ylavic]
143 *) core: Define and UnDefine are no longer permitted in
144 directory context. Previously they would always be evaulated
145 as the configuration was read without regard for the directory
146 context. [Eric Covener]
148 *) config: For directives that do not expect any arguments, enforce
149 that none are specified in the configuration file.
150 [Joachim Zobel <jzobel heute-morgen.de>, Eric Covener]
152 *) mod_rewrite: Improve 'bad flag delimeters' startup error by showing
153 how the input was tokenized. PR 56528. [Edward Lu <Chaosed0 gmail.com>]
155 *) mod_proxy: Don't put non balancer-member workers in error state by
156 default for connection or 500/503 errors, and honor status=+I for
157 any error. PR 48388. [Yann Ylavic]
159 *) mod_socache_memcache: Pass expiration time through to memcached. PR 55445.
160 [Faidon Liambotis <paravoid debian.org>, Joe Orton]
162 *) ap_expr: Add filemod function for checking file modification dates
165 *) mod_authnz_ldap: Resolve crashes with LDAP authz and non-LDAP authn since
166 r1608202. [Eric Covener]
168 *) apreq: Content-Length header should be always interpreted as a decimal.
169 Leading 0 could be erroneously considered as an octal value. PR 56598.
170 [Chris Card <ctcard hotmail com>]
172 *) mod_proxy: Now allow for 191 character worker names, with non-fatal
173 errors if name is truncated. PR53218. [Jim Jagielski]
175 *) mod_ssl: Add optional function "ssl_get_tls_cb" to allow support
176 for channel bindings. [Simo Sorce <simo redhat.com>]
178 *) mod_proxy_wstunnel: Concurrent websockets messages could be
179 lost or delayed with ProxyWebsocketAsync enabled.
180 [Edward Lu <Chaosed0 gmail.com>]
182 *) core, mod_info: Add compiled and loaded PCRE versions to version
183 number display. [Rainer Jung]
185 *) mod_authnz_ldap: Return LDAP connections to the pool before the handler
186 is run, instead of waiting until the end of the request. [Eric Covener]
188 *) mod_proxy_html: support automatic detection of doctype and processing
189 of FPIs. PR56285 [Micha Lenk <micha lenk info>, Nick Kew]
191 *) mod_proxy_html: skip documents shorter than 4 bytes
192 PR 56286 [Micha Lenk <micha lenk info>]
194 *) mod_proxy_fdpass: Fix computation of the size of 'struct sockaddr_un'
195 when passed to 'connect()'.
196 [Graham Dumpleton <grahamd apache org>]
198 *) core: Add ap_mpm_resume_suspended() API to allow a suspended connection
200 [Artem <artemciy gmail.com>, Edward Lu <Chaosed0 gmail.com>]
202 *) core: Add ap_mpm_register_socket_callback_timeout() API. [Eric Covener]
204 *) mod_proxy_wstunnel: Honor ProxyWebsocketIdleTimeout in asynchronous
205 processing mode. [Eric Covener]
207 *) mod_authnz_ldap: Fail explicitly when the filter is too long. Remove
208 unnecessary apr_pstrdup() and strlen(). [Graham Leggett]
210 *) Add the ldap-search option to mod_authnz_ldap, allowing authorization
211 to be based on arbitrary expressions that do not include the username.
214 *) Add the ldap function to the expression API, allowing LDAP filters and
215 distinguished names based on expressions to be escaped correctly to
216 guard against LDAP injection. [Graham Leggett]
218 *) Add module mod_ssl_ct, which provides an implementation of Certificate
219 Transparency (RFC 6962) for httpd. [Jeff Trawick]
221 *) mod_proxy_wstunnel: Avoid sending error responses down an upgraded
222 websockets connection as it is being close down. [Eric Covener]
224 *) mod_proxy_wstunnel: Allow the administrator to cap the amount
225 of time a synchronous websockets connection stays idle with
226 ProxyWebsocketIdleTimeout. [Eric Covener]
228 *) mod_proxy_wstunnel: Change to opt-in for asynchronous support, adding
229 directives ProxyWebsocketAsync and ProxyWebsocketAsyncDelay.
232 *) mod_proxy_wstunnel: Stop leaking websockets backend connections under
233 event MPM (trunk-only). [Eric Covener]
235 *) mod_proxy_http: Add detach_backend hook (potentially usable
236 in other proxy scheme handlers). [Jeff Trawick]
238 *) mod_deflate: Add DeflateAlterETag to control how the ETag
239 is modified. The 'NoChange' parameter mimics 2.2.x behavior.
240 PR 45023, PR 39727. [Eric Covener]
242 *) mod_rewrite: Add 'BNF' (backreferences-no-plus) flag to RewriteRule to
243 allow spaces in backreferences to be encoded as %20 instead of '+'.
246 *) mod_rewrite: Support an optional list of characters to escape in the
247 argument for the 'B' (escape backreferences) flag. [Eric Covener]
249 *) mod_dir: Default to 2.2-like behavior and skip execution when method is
250 neither GET nor POST, such as for DAV requests. PR 54914. [Chris Darroch]
252 *) mod_rewrite: Rename the handler that does per-directory internal
253 redirects to "rewrite-redirect-handler" from "redirect-handler" so
254 it is less ambiguous and less likely to be reused. [Eric Covener]
256 *) mod_rewrite: Protect against looping with the [N] flag by enforcing a
257 default limit of 10000 iterations, and allowing each rule to change its
258 limit. [Eric Covener]
260 *) mod_ssl: Fix config merging of SSLOCSPEnable and SSLOCSPOverrideResponder.
263 *) Add HttpContentLengthHeadZero and HttpExpectStrict directives.
264 [Yehuda Sadeh <yehuda inktank com>, Justin Erenkrantz]
266 *) mod_ssl: Add -t -DDUMP_CA_CERTS option which dumps the filenames of all
267 configured SSL CA certificates to stdout the same way as DUMP_CERTS does.
270 *) mod_ssl: Don't flush when an EOS is received. Prepares mod_ssl
271 to support write completion. [Graham Leggett]
273 *) core: Add parse_errorlog_arg callback to ap_errorlog_provider
274 to allow providers to check the ErrorLog argument. [Jan Kaluza]
276 *) mod_cgid: Use the servers Timeout for each read from a CGI script,
277 allow override with new CGIDRequestTimeout directive. PR43494
278 [Eric Covener, Toshikuni Fukaya <toshikuni-fukaya cybozu co jp>]
280 *) core: ensure any abnormal exit is reported to stderr if it's a tty.
283 *) mod_lua: Let the Inter-VM get/set functions work with a global
284 shared memory pool instead of a per-process pool. [Daniel Gruno]
286 *) ldap: Support ldaps when using the Microsoft LDAP SDK.
287 PR 54626. [Jean-Frederic Clere]
289 *) mod_authnz_ldap: Change default value of AuthLDAPMaxSubGroupDepth to 0
290 to avoid performance problems when subgroups aren't in use. [Eric Covener]
292 *) mod_syslog: New module implementing syslog ap_error_log provider.
293 Previously, this code was part of core, now it's in separate module.
296 *) core: Add ap_errorlog_provider to make ErrorLog logging modular. Move
297 syslog support from core to new mod_syslog. [Jan Kaluza]
299 *) mod_status, mod_echo: Fix the display of client addresses.
300 They were truncated to 31 characters which is not enough for IPv6 addresses.
301 PR 54848 [Bernhard Schmidt <berni birkenwald de>]
303 *) mod_unique_id: Use output of the PRNG rather than IP address and
304 pid, avoiding sleep() call and possible DNS issues at startup,
305 plus improving randomness for IPv6-only hosts.
306 [Jan Kaluza <jkaluza redhat.com>]
308 *) mod_file_cache: mod_file_cache should be able to serve files that
309 haven't had a Content-Type set via e.g. mod_mime. [Eric Covener]
311 *) core: merge AllowEncodedSlashes from the base configuration into
312 virtual hosts. [Eric Covener]
314 *) AIX: Install DSO's with "cp" instead of "install" in instdso.sh
317 *) mod_ldap: Don't keep retrying if a new LDAP connection times out.
320 *) mod_deflate: permit compilation of mod_deflate against a zlib that has
321 been configured with -D Z_PREFIX, which redefines the token "deflate".
324 *) mod_auth_digest: Use the secret when generating nonces in all cases and
325 not only when AuthName is used in .htaccess files (this change may cause
326 problems if used with round robin load balancers). Don't regenerate the
327 secret on graceful restarts. PR 54637 [Stefan Fritsch]
329 *) core: Remove apr_brigade_flatten(), buffering and duplicated code
330 from the HTTP_IN filter, parse chunks in a single pass with zero copy.
331 Reduce memory usage by 48 bytes per request. [Graham Leggett]
333 *) core: Stop the HTTP_IN filter from attempting to write error buckets
334 to the output filters, which is bogus in the proxy case. Create a
335 clean mapping from APR codes to HTTP status codes, and use it where
336 needed. [Graham Leggett]
338 *) mod_proxy: Ensure network errors detected by the proxy are returned as
339 504 Gateway Timout as opposed to 502 Bad Gateway, in order to be
340 compliant with RFC2616 14.9.4 Cache Revalidation and Reload Controls.
342 *) mod_dav: mod_dav overrides dav_fs response on PUT failure. PR 35981
343 [Basant Kumar Kukreja <basant.kukreja sun.com>, Alejandro Alvarez
344 <alejandro.alvarez.ayllon cern.ch>]
346 *) mod_ldap: LDAP connections used for authentication were not respecting
347 LDAPConnectionPoolTimeout. PR 54587
349 *) core: ap_rgetline_core now pulls from r->proto_input_filters.
351 *) mod_proxy_html: process parsed comments immediately.
352 Fixes bug where parsed comments may be lost. [Nick Kew]
354 *) mod_proxy_html: introduce doctype for HTML 5 [Nick Kew]
356 *) mod_proxy_html: fix typo-bug processing "strict" vs "transitional"
357 HTML/XHTML [Nick Kew]
359 *) core: Add option to add valgrind support. Use it to reduce false positive
360 warnings in mod_ssl. [Stefan Fritsch]
362 *) mod_authn_file, mod_authn_dbd, mod_authn_dbm, mod_authn_socache:
363 Cache the result of the most recent password hash verification for every
364 keep-alive connection. This saves some expensive calculations.
367 *) http: Remove support for Request-Range header sent by Navigator 2-3 and
368 MSIE 3. [Stefan Fritsch]
370 *) core, http: Extend HttpProtocol with an option to enforce stricter HTTP
371 conformance or to only log the found problems. [Stefan Fritsch]
373 *) core: Correctly parse an IPv6 literal host specification in an absolute
374 URL in the request line. [Stefan Fritsch]
378 *) core: Add LogLevelOverride directive that allows to override the
379 loglevel for clients from certain IPs. This also works for things
380 like the SSL handshake where <If> LogLevel ... </If> is evaluated
381 too late. [Stefan Fritsch]
383 *) core: Add new directive Warning to issue warnings from a configuration
384 file. Both Warning and Error now generate a timestamped log message.
387 *) ap_expr: Add SERVER_PROTOCOL_VERSION, ..._MAJOR, and ..._MINOR
388 variables. [Stefan Fritsch]
390 *) core: New directive RegisterHttpMethod for registering non-standard
391 HTTP methods. [Stefan Fritsch]
393 *) core: New directive HttpProtocol which allows to disable HTTP/0.9
394 support. [Stefan Fritsch]
396 *) mod_allowhandlers: New module to forbid specific handlers for specific
397 directories. [Stefan Fritsch]
399 *) mod_systemd: New module, for integration with systemd on Linux.
400 [Jan Kaluza <jkaluza redhat.com>]
402 *) WinNT MPM: Store pid and generation for each thread in scoreboard
403 to allow tracking of threads from exiting children via mod_status
404 or other such mechanisms. [Jeff Trawick]
406 *) The following now respect DefaultRuntimeDir/DEFAULT_REL_RUNTIMEDIR:
407 - APIs: ap_log_pid(), ap_remove_pid, ap_read_pid()
408 - mod_cache: thundering herd lock directory
409 - mod_lbmethod_heartbeat, mod_heartmonitor: heartbeat storage file
410 - mod_ldap: shared memory cache
411 - mod_socache_shmcb, mod_socache_dbm: shared memory or dbm for cache
414 *) suexec: Add --enable-suexec-capabilites support on Linux, to use
415 setuid/setgid capability bits rather than a setuid root binary.
418 *) suexec: Add support for logging to syslog as an alternative to logging
419 to a file; configure --without-suexec-logfile --with-suexec-syslog.
422 *) mod_ssl: Add support for TLS Next Protocol Negotiation. PR 52210.
423 [Matthew Steele <mdsteele google.com>]
425 *) cross-compile: allow to provide CC_FOR_BUILD so that gen_test_char will
426 be compiled by the build compiler instead of the host compiler.
427 Also set CC_FOR_BUILD to 'cc' when cross-compilation is detected.
428 PR 51257. [Guenter Knauf]
430 *) core: In maintainer mode, replace apr_palloc with a version that
431 initializes the allocated memory with non-zero values, except if
432 AP_DEBUG_NO_ALLOC_POISON is defined. [Stefan Fritsch]
434 *) mod_policy: Add a new testing module to help server administrators
435 enforce a configurable level of protocol compliance on their
436 servers and application servers behind theirs. [Graham Leggett]
438 *) mod_firehose: Add a new debugging module able to record traffic
439 passing through the server in such a way that connections and/or
440 requests be reconstructed and replayed. [Graham Leggett]
450 [Apache 2.5.0-dev includes those bug fixes and changes with the
451 Apache 2.4.xx tree as documented below, except as noted.]
453 Changes with Apache 2.4.x and later:
455 *) http://svn.apache.org/viewvc/httpd/httpd/branches/2.4.x/CHANGES?view=markup
457 Changes with Apache 2.2.x and later:
459 *) http://svn.apache.org/viewvc/httpd/httpd/branches/2.2.x/CHANGES?view=markup
461 Changes with Apache 2.0.x and later:
463 *) http://svn.apache.org/viewvc/httpd/httpd/branches/2.0.x/CHANGES?view=markup