2 Changes with Apache 2.5.0
4 *) mod_ssl: Add optional function "ssl_get_tls_cb" to allow support
5 for channel bindings. [Simo Sorce <simo redhat.com>]
7 *) mod_cache: Avoid sending 304 responses during failed revalidations
8 PR56881. [Eric Covener]
10 *) core: Avoid useless warning message when parsing a section guarded by
11 <IfDefine foo> if $(foo) is used within the section.
12 PR 56858 [Christophe Jaillet]
14 *) mod_proxy_fcgi: Fix faulty logging of large amounts of stderr from the
15 application. PR 56858. [Manuel Mausz <manuel-asf mausz.at>]
17 *) mod_ratelimit: Drop severity of AH01455 and AH01457 (ap_pass_brigade
18 failed) messages from ERROR to TRACE1. Other filters do not bother
19 re-reporting failures from lower level filters. PR56832. [Eric Covener]
21 *) mod_proxy_http: Proxy responses with error status and
22 "ProxyErrorOverride On" hang until proxy timeout.
25 *) mod_proxy_wstunnel: Concurrent websockets messages could be
26 lost or delayed with ProxyWebsocketAsync enabled.
27 [Edward Lu <Chaosed0 gmail.com>]
29 *) core, mod_info: Add compiled and loaded PCRE versions to version
30 number display. [Rainer Jung]
32 *) mpm_winnt: Accept utf-8 (Unicode) service names and descriptions for
33 internationalization. [William Rowe]
35 *) mpm_winnt: Normalize the error and status messages emitted by service.c,
36 the service control interface for Windows. [William Rowe]
38 *) SECURITY: CVE-2013-5704 (cve.mitre.org)
39 core: HTTP trailers could be used to replace HTTP headers
40 late during request processing, potentially undoing or
41 otherwise confusing modules that examined or modified
42 request headers earlier. Adds "MergeTrailers" directive to restore
43 legacy behavior. [Edward Lu, Yann Ylavic, Joe Orton, Eric Covener]
45 *) http_protocol: fix logic in ap_method_list_(add|remove) in order:
46 - to correctly reset bits
47 - not to modify the 'method_mask' bitfield unnecessarily
49 *) mod_log_config: Allow three character log formats to be registered. For
50 backwards compatibility, the first character of a three-character format
51 must be the '^' (caret) character. [Eric Covener]
53 *) mod_authnz_ldap: Return LDAP connections to the pool before the handler
54 is run, instead of waiting until the end of the request. [Eric Covener]
56 *) mod_ldap: Be more conservative with the last-used time for
57 LDAPConnectionPoolTTL. PR54587 [Eric Covener]
59 *) mod_deflate: Don't fail when flushing inflated data to the user-agent
60 and that coincides with the end of stream ("Zlib error flushing inflate
61 buffer"). PR 56196. [Christoph Fausak <christoph fausak glueckkanja.com>]
63 *) mod_proxy: Don't limit the size of the connectable Unix Domain Socket
64 paths. [Christophe Jaillet, Yann Ylavic]
66 *) mod_ssl: dump SSL IO/state for the write side of the connection(s),
67 like reads (level TRACE4). [Yann Ylavic]
69 *) mod_proxy: Shutdown (eg. close notify) the backend connection before
70 closing. [Yann Ylavic]
72 *) mpm_event[opt]: Send the SSL close notify alert when the KeepAliveTimeout
73 expires. PR54998. [Yann Ylavic]
75 *) mod_ssl: Ensure that the SSL close notify alert is flushed to the client.
76 PR54998. [Tim Kosse <tim.kosse filezilla-project.org>, Yann Ylavic]
78 *) mod_log_config: Add GlobalLog to allow a globally defined log to
79 be inherited by virtual hosts that define a CustomLog.
80 [Edward Lu <Chaosed0 gmail.com>]
82 *) MPMs: Support SO_REUSEPORT to create multiple duplicated listener
83 records for scalability. [Yingqi Lu <yingqi.lu@intel.com>,
84 Jeff Trawick, Jim Jagielski]
86 *) mod_proxy_html: support automatic detection of doctype and processing
87 of FPIs. PR56285 [Micha Lenk <micha lenk info>, Nick Kew]
89 *) mod_proxy_html: skip documents shorter than 4 bytes
90 PR 56286 [Micha Lenk <micha lenk info>]
92 *) mod_proxy_fdpass: Fix computation of the size of 'struct sockaddr_un'
93 when passed to 'connect()'.
94 [Graham Dumpleton <grahamd apache org>]
96 *) core: Add ap_mpm_resume_suspended() API to allow a suspended connection
98 [Artem <artemciy gmail.com>, Edward Lu <Chaosed0 gmail.com>]
100 *) core: Add ap_mpm_register_socket_callback_timeout() API. [Eric Covener]
102 *) mod_proxy_wstunnel: Honor ProxyWebsocketIdleTimeout in asynchronous
103 processing mode. [Eric Covener]
105 *) mod_authnz_ldap: Fail explicitly when the filter is too long. Remove
106 unnecessary apr_pstrdup() and strlen(). [Graham Leggett]
108 *) Add the ldap-search option to mod_authnz_ldap, allowing authorization
109 to be based on arbitrary expressions that do not include the username.
112 *) Add the ldap function to the expression API, allowing LDAP filters and
113 distinguished names based on expressions to be escaped correctly to
114 guard against LDAP injection. [Graham Leggett]
116 *) Add module mod_ssl_ct, which provides an implementation of Certificate
117 Transparency (RFC 6962) for httpd. [Jeff Trawick]
119 *) mod_proxy: Preserve original request headers even if they differ
120 from the ones to be forwarded to the backend. PR 45387.
123 *) mod_remoteip: Prevent an external proxy from presenting an internal
124 proxy. PR 55962. [Mike Rumph]
126 *) mod_ssl: Add hooks to allow other modules to perform processing at
127 several stages of initialization and connection handling. See
128 mod_ssl_openssl.h. [Jeff Trawick]
130 *) mod_proxy_wstunnel: Avoid sending error responses down an upgraded
131 websockets connection as it is being close down. [Eric Covener]
133 *) mod_proxy_wstunnel: Allow the administrator to cap the amount
134 of time a synchronous websockets connection stays idle with
135 ProxyWebsocketIdleTimeout. [Eric Covener]
137 *) mod_proxy_wstunnel: Change to opt-in for asynchronous support, adding
138 directives ProxyWebsocketAsync and ProxyWebsocketAsyncDelay.
141 *) mod_proxy_wstunnel: Stop leaking websockets backend connections under
142 event MPM (trunk-only). [Eric Covener]
144 *) mod_proxy_http: Add detach_backend hook (potentially usable
145 in other proxy scheme handlers). [Jeff Trawick]
147 *) mod_deflate: Add DeflateAlterETag to control how the ETag
148 is modified. The 'NoChange' parameter mimics 2.2.x behavior.
149 PR 45023, PR 39727. [Eric Covener]
151 *) mod_rewrite: Add 'BNF' (backreferences-no-plus) flag to RewriteRule to
152 allow spaces in backreferences to be encoded as %20 instead of '+'.
155 *) mod_rewrite: Support an optional list of characters to escape in the
156 argument for the 'B' (escape backreferences) flag. [Eric Covener]
158 *) mod_ssl: Add SSLOCSPUseRequestNonce directive to control whether or not
159 OCSP requests should use a nonce to be checked against the responder's
160 one. PR 56233. [ Yann Ylavic ]
162 *) mod_dir: Default to 2.2-like behavior and skip execution when method is
163 neither GET nor POST, such as for DAV requests. PR 54914. [Chris Darroch]
165 *) mod_rewrite: Rename the handler that does per-directory internal
166 redirects to "rewrite-redirect-handler" from "redirect-handler" so
167 it is less ambiguous and less likely to be reused. [Eric Covener]
169 *) mod_rewrite: Protect against looping with the [N] flag by enforcing a
170 default limit of 10000 iterations, and allowing each rule to change its
171 limit. [Eric Covener]
173 *) mod_ssl: Fix config merging of SSLOCSPEnable and SSLOCSPOverrideResponder.
176 *) Add HttpContentLengthHeadZero and HttpExpectStrict directives.
177 [Yehuda Sadeh <yehuda inktank com>, Justin Erenkrantz]
179 *) mod_ssl: Add -t -DDUMP_CA_CERTS option which dumps the filenames of all
180 configured SSL CA certificates to stdout the same way as DUMP_CERTS does.
183 *) mod_ssl: Don't flush when an EOS is received. Prepares mod_ssl
184 to support write completion. [Graham Leggett]
186 *) core: Add parse_errorlog_arg callback to ap_errorlog_provider
187 to allow providers to check the ErrorLog argument. [Jan Kaluza]
189 *) mod_cgid: Use the servers Timeout for each read from a CGI script,
190 allow override with new CGIDRequestTimeout directive. PR43494
191 [Eric Covener, Toshikuni Fukaya <toshikuni-fukaya cybozu co jp>]
193 *) core: ensure any abnormal exit is reported to stderr if it's a tty.
196 *) mod_lua: Let the Inter-VM get/set functions work with a global
197 shared memory pool instead of a per-process pool. [Daniel Gruno]
199 *) ldap: Support ldaps when using the Microsoft LDAP SDK.
200 PR 54626. [Jean-Frederic Clere]
202 *) mod_proxy: Add ap_connection_reusable() for checking if a connection
203 is reusable as of this point in processing. [Jeff Trawick]
205 *) mod_authnz_ldap: Change default value of AuthLDAPMaxSubGroupDepth to 0
206 to avoid performance problems when subgroups aren't in use. [Eric Covener]
208 *) mod_syslog: New module implementing syslog ap_error_log provider.
209 Previously, this code was part of core, now it's in separate module.
212 *) core: Add ap_errorlog_provider to make ErrorLog logging modular. Move
213 syslog support from core to new mod_syslog. [Jan Kaluza]
215 *) mod_status, mod_echo: Fix the display of client addresses.
216 They were truncated to 31 characters which is not enough for IPv6 addresses.
217 PR 54848 [Bernhard Schmidt <berni birkenwald de>]
219 *) core: Add ap_log_data(), ap_log_rdata(), etc. for logging buffers.
222 *) mod_unique_id: Use output of the PRNG rather than IP address and
223 pid, avoiding sleep() call and possible DNS issues at startup,
224 plus improving randomness for IPv6-only hosts.
225 [Jan Kaluza <jkaluza redhat.com>]
227 *) mod_authnz_ldap: Support primitive LDAP servers that do not accept
228 filters, such as "SDBM-backed LDAP" on z/OS, by allowing a special
229 filter "none" to be specified in AuthLDAPURL. [Eric Covener]
231 *) mod_file_cache: mod_file_cache should be able to serve files that
232 haven't had a Content-Type set via e.g. mod_mime. [Eric Covener]
234 *) core: merge AllowEncodedSlashes from the base configuration into
235 virtual hosts. [Eric Covener]
237 *) AIX: Install DSO's with "cp" instead of "install" in instdso.sh
240 *) mod_ldap: Don't keep retrying if a new LDAP connection times out.
243 *) mod_deflate: permit compilation of mod_deflate against a zlib that has
244 been configured with -D Z_PREFIX, which redefines the token "deflate".
247 *) mod_auth_digest: Use the secret when generating nonces in all cases and
248 not only when AuthName is used in .htaccess files (this change may cause
249 problems if used with round robin load balancers). Don't regenerate the
250 secret on graceful restarts. PR 54637 [Stefan Fritsch]
252 *) core: Remove apr_brigade_flatten(), buffering and duplicated code
253 from the HTTP_IN filter, parse chunks in a single pass with zero copy.
254 Reduce memory usage by 48 bytes per request. [Graham Leggett]
256 *) core: Stop the HTTP_IN filter from attempting to write error buckets
257 to the output filters, which is bogus in the proxy case. Create a
258 clean mapping from APR codes to HTTP status codes, and use it where
259 needed. [Graham Leggett]
261 *) mod_proxy: Ensure network errors detected by the proxy are returned as
262 504 Gateway Timout as opposed to 502 Bad Gateway, in order to be
263 compliant with RFC2616 14.9.4 Cache Revalidation and Reload Controls.
265 *) mod_dav: mod_dav overrides dav_fs response on PUT failure. PR 35981
266 [Basant Kumar Kukreja <basant.kukreja sun.com>, Alejandro Alvarez
267 <alejandro.alvarez.ayllon cern.ch>]
269 *) mod_ldap: LDAP connections used for authentication were not respecting
270 LDAPConnectionPoolTimeout. PR 54587
272 *) core: ap_rgetline_core now pulls from r->proto_input_filters.
274 *) mod_proxy_html: process parsed comments immediately.
275 Fixes bug where parsed comments may be lost. [Nick Kew]
277 *) mod_proxy_html: introduce doctype for HTML 5 [Nick Kew]
279 *) mod_proxy_html: fix typo-bug processing "strict" vs "transitional"
280 HTML/XHTML [Nick Kew]
282 *) core: Add option to add valgrind support. Use it to reduce false positive
283 warnings in mod_ssl. [Stefan Fritsch]
285 *) mod_authn_file, mod_authn_dbd, mod_authn_dbm, mod_authn_socache:
286 Cache the result of the most recent password hash verification for every
287 keep-alive connection. This saves some expensive calculations.
290 *) http: Remove support for Request-Range header sent by Navigator 2-3 and
291 MSIE 3. [Stefan Fritsch]
293 *) core, http: Extend HttpProtocol with an option to enforce stricter HTTP
294 conformance or to only log the found problems. [Stefan Fritsch]
296 *) core: Correctly parse an IPv6 literal host specification in an absolute
297 URL in the request line. [Stefan Fritsch]
301 *) core: Add LogLevelOverride directive that allows to override the
302 loglevel for clients from certain IPs. This also works for things
303 like the SSL handshake where <If> LogLevel ... </If> is evaluated
304 too late. [Stefan Fritsch]
306 *) core: Add new directive Warning to issue warnings from a configuration
307 file. Both Warning and Error now generate a timestamped log message.
310 *) ap_expr: Add SERVER_PROTOCOL_VERSION, ..._MAJOR, and ..._MINOR
311 variables. [Stefan Fritsch]
313 *) core: New directive RegisterHttpMethod for registering non-standard
314 HTTP methods. [Stefan Fritsch]
316 *) core: New directive HttpProtocol which allows to disable HTTP/0.9
317 support. [Stefan Fritsch]
319 *) mod_allowhandlers: New module to forbid specific handlers for specific
320 directories. [Stefan Fritsch]
322 *) mod_systemd: New module, for integration with systemd on Linux.
323 [Jan Kaluza <jkaluza redhat.com>]
325 *) WinNT MPM: Store pid and generation for each thread in scoreboard
326 to allow tracking of threads from exiting children via mod_status
327 or other such mechanisms. [Jeff Trawick]
329 *) The following now respect DefaultRuntimeDir/DEFAULT_REL_RUNTIMEDIR:
330 - APIs: ap_log_pid(), ap_remove_pid, ap_read_pid()
331 - core: the scoreboard (ScoreBoardFile), pid file (PidFile), and
333 - mod_cache: thundering herd lock directory
334 - mod_lbmethod_heartbeat, mod_heartmonitor: heartbeat storage file
335 - mod_ldap: shared memory cache
336 - mod_socache_shmcb, mod_socache_dbm: shared memory or dbm for cache
339 *) suexec: Add --enable-suexec-capabilites support on Linux, to use
340 setuid/setgid capability bits rather than a setuid root binary.
343 *) suexec: Add support for logging to syslog as an alternative to logging
344 to a file; configure --without-suexec-logfile --with-suexec-syslog.
347 *) mod_ssl: Add support for TLS Next Protocol Negotiation. PR 52210.
348 [Matthew Steele <mdsteele google.com>]
350 *) cross-compile: allow to provide CC_FOR_BUILD so that gen_test_char will
351 be compiled by the build compiler instead of the host compiler.
352 Also set CC_FOR_BUILD to 'cc' when cross-compilation is detected.
353 PR 51257. [Guenter Knauf]
355 *) core: In maintainer mode, replace apr_palloc with a version that
356 initializes the allocated memory with non-zero values, except if
357 AP_DEBUG_NO_ALLOC_POISON is defined. [Stefan Fritsch]
359 *) mod_policy: Add a new testing module to help server administrators
360 enforce a configurable level of protocol compliance on their
361 servers and application servers behind theirs. [Graham Leggett]
363 *) mod_firehose: Add a new debugging module able to record traffic
364 passing through the server in such a way that connections and/or
365 requests be reconstructed and replayed. [Graham Leggett]
375 [Apache 2.5.0-dev includes those bug fixes and changes with the
376 Apache 2.4.xx tree as documented below, except as noted.]
378 Changes with Apache 2.4.x and later:
380 *) http://svn.apache.org/viewvc/httpd/httpd/branches/2.4.x/CHANGES?view=markup
382 Changes with Apache 2.2.x and later:
384 *) http://svn.apache.org/viewvc/httpd/httpd/branches/2.2.x/CHANGES?view=markup
386 Changes with Apache 2.0.x and later:
388 *) http://svn.apache.org/viewvc/httpd/httpd/branches/2.0.x/CHANGES?view=markup