-*- coding: utf-8 -*- Changes with Apache 2.5.0 *) Evaluate nested If/ElseIf/Else configuration blocks. [Luca Toscano, Jacob Champion] *) Introduce request taint checking framework to prevent privilege hijacking through .htaccess. [Nick Kew] *) mod_proxy_wstunnel: Add "upgrade" parameter to allow upgrade to other protocols. [Jean-Frederic Clere] *) mod_substitute: Fix spurious AH01328 (Line too long) errors on EBCDIC systems. [Eric Covener] *) core: Disallow multiple Listen on the same IP:port when listener buckets are configured (ListenCoresBucketsRatio > 0), consistently with the single bucket case (default), thus avoiding the leak of the corresponding socket descriptors on graceful restart. [Yann Ylavic] *) mod_autoindex: Add IndexOptions UseOldDateFormat to allow the date format from 2.2 in the Last Modified column. PR60846. [Hank Ibell ] *) Add and directives. [Joe Orton] *) mod_syslog: Support use of optional "tag" in syslog entries. PR 60525. [Ben Rubson , Jim Jagielski] *) MPMs unix: Place signals handlers and helpers out of DSOs to avoid a possible crash if a signal is caught during (graceful) restart. PR 60487. [Yann Ylavic] *) mod_proxy: Allow the per-request environment variable "no-proxy" to be used as an alternative to ProxyPass /path !. This is primarily to set exceptions for ProxyPass specified in context. Use SetEnvIf, not SetEnv. [Eric Covener] *) When using mod_status with the Event MPM, report the number of requests associated with an active connection in the "ACC" field. Previously zero was always reported with this MPM. PR60647. [Eric Covener] *) mod_proxy_hcheck: Don't validate timed out responses. [Yann Ylavic] *) mod_proxy_fcgi: Return to 2.4.20-and-earlier behavior of leaving a "proxy:fcgi://" prefix in the SCRIPT_FILENAME environment variable by default. Add ProxyFCGIBackendType to allow the type of backend to be specified so these kinds of fixups can be restored without impacting FPM. PR60576 [Eric Covener, Jim Jagielski] *) core: EBCDIC fixes for interim responses with additional headers. [Eric Covener] *) mod_remoteip: Add support for PROXY protocol (code donated by Cloudzilla). Add ability for PROXY protocol processing to be optional to donated code. See also: http://www.haproxy.org/download/1.5/doc/proxy-protocol.txt [Cloudzilla/roadrunner2@GitHub, Jim Jagielski, Daniel Ruggeri] *) mod_rewrite: When a substitution is a fully qualified URL, and the scheme/host/port matches the current virtual host, stop interpreting the path component as a local path just because the first component of the path exists in the filesystem. Adds RewriteOption "LegacyPrefixDocRoot" to revert to previous behavior. PR60009. [Hank Ibell ] *) core: Add %{REMOTE_PORT} to the expression parser. PR59938 [Hank Ibell ] *) mod_remoteip: When overriding the useragent address from X-Forwarded-For, zero out what had been initialized as the connection-level port. PR59931. [Hank Ibell ] *) mod_proxy_wstunnel: Reliably run before mod_proxy_http. [Eric Covener] *) mod_proxy_protocol: Add server-side, front-end support for PROXY PROTOCOL (http://blog.haproxy.com/haproxy/proxy-protocol/). [roadrunner2] *) mod_proxy_fcgi: Return HTTP 504 rather than 503 in case of proxy timeout. [Luca Toscano] *) http: Allow unknown response status' lines returned in the form of "HTTP/x.x xxx Status xxx". [Yann Ylavic] *) core: Add configuration section to allow any file on disk to be used as a conditional. [Edward Lu, Eric Covener] *) event: Avoid listener periodic wake ups by using the pollset wake-ability when available. PR 57399. [Yann Ylavic, Luca Toscano] *) mod_brotli: Add a new module for dynamic Brotli (RFC 7932) compression. [Evgeny Kotkov] *) core: Permit unencoded ';' characters to appear in proxy requests and Location: response headers. Corresponds to modern browser behavior. [William Rowe] *) mod_crypto: Add the all purpose crypto filters with support for HLS. [Graham Leggett] *) core: Drop an invalid Last-Modified header value coming from a FCGI/CGI script instead of replacing it with Unix epoch. Warn the users about Last-Modified header value replacements and violations of the RFC. [Yann Ylavic, Luca Toscano, William Rowe, Jacob Champion] *) mod_dav: Allow other modules to become providers and add ACLs to the DAV response. [Jari Urpalainen , Graham Leggett] *) mod_dav: Add dav_begin_multistatus, dav_send_one_response, dav_finish_multistatus, dav_send_multistatus, dav_handle_err, dav_failed_proppatch, dav_success_proppatch to mod_dav.h. [Jari Urpalainen , Graham Leggett] *) mod_proxy, mod_ssl: Handle SSLProxy* directives in sections, allowing per backend TLS configuration. [Yann Ylavic] *) core: explicitly exclude 'h2' from protocols announced via an Upgrade: header as commanded by http-wg. [Stefan Eissing] *) mod_proxy_ajp: Add "secret" parameter to proxy workers to implement legacy AJP13 authentication. PR 53098. [Dmitry A. Bakshaev ] *) mpm: Generalise the ap_mpm_register_socket functions to accept pipes or sockets. [Graham Leggett] *) core: Extend support for setting aside data from the network input filter to any connection or request input filter. [Graham Leggett] *) core: Split ap_create_request() from ap_read_request(). [Graham Leggett] *) mod_auth_digest: Fix compatibility with expression-based Authname. PR59039. [Eric Covener] *) mpm: Add a complete_connection hook that confirms whether an MPM is allowed to leave the WRITE_COMPLETION phase. Move filter code out of the MPMs. [Graham Leggett] *) core: Added support for HTTP code 451. PR58985. [Yehuda Katz , Jim Jagielski] *) mod_filter: Fix AddOutputFilterByType with non-content-level filters. PR58856 [Micha Lenk ] *) mod_cache: Consider Cache-Control: s-maxage in expiration calculations. [Eric Covener] *) mod_cache: Allow caching of responses with an Expires header in the past that also has Cache-Control: max-age or s-maxage. PR55156. [Eric Covener] *) Added many log numbers to log statements that had none. *) mod_session: Introduce SessionExpiryUpdateInterval which allows to configure the session/cookie expiry's update interval. PR 57300. [Paul Spangler ] *) core: Extend support for asynchronous write completion from the network filter to any connection or request filter. [Graham Leggett] *) mod_auth_digest: remove AuthDigestEnableQueryStringHack which is no more documented since dec 2012 (r1415960). [Christophe Jaillet] *) mod_charset_lite: On EBCDIC platforms, make sure mod_charset_lite runs after other resource-level filters. [Eric Covener] *) http: Don't remove the Content-Length of zero from a HEAD response if it comes from an origin server, module or script. [Yann Ylavic] *) http: Add support for RFC2324/RFC7168. [Graham Leggett] *) mod_rewrite: Add support for starting External Rewriting Programs as non-root user on UNIX systems by specifying username and group name as third argument of RewriteMap directive. [Jan Kaluza] *) mod_authn_core: Add expression support to AuthName and AuthType. [Graham Leggett] *) suexec: Filter out the HTTP_PROXY environment variable because it is treated as alias for http_proxy by some programs. [Stefan Fritsch] *) mod_proxy_http: Don't establish or reuse a backend connection before pre- fetching the request body, so to minimize the delay between it is supposed to be alive and the first bytes sent: this is a best effort to prevent the backend from closing because of idle or keepalive timeout in the meantime. Also, handle a new "proxy-flushall" environment variable which allows to flush any forwarded body data immediately. PR 56541+37920. [Yann Ylavic] *) core: Define and UnDefine are no longer permitted in directory context. Previously they would always be evaulated as the configuration was read without regard for the directory context. [Eric Covener] *) config: For directives that do not expect any arguments, enforce that none are specified in the configuration file. [Joachim Zobel , Eric Covener] *) mod_rewrite: Improve 'bad flag delimeters' startup error by showing how the input was tokenized. PR 56528. [Edward Lu ] *) mod_proxy: Don't put non balancer-member workers in error state by default for connection or 500/503 errors, and honor status=+I for any error. PR 48388. [Yann Ylavic] *) mod_socache_memcache: Pass expiration time through to memcached. PR 55445. [Faidon Liambotis , Joe Orton] *) ap_expr: Add filemod function for checking file modification dates [Daniel Gruno] *) mod_authnz_ldap: Resolve crashes with LDAP authz and non-LDAP authn since r1608202. [Eric Covener] *) apreq: Content-Length header should be always interpreted as a decimal. Leading 0 could be erroneously considered as an octal value. PR 56598. [Chris Card ] *) mod_proxy: Now allow for 191 character worker names, with non-fatal errors if name is truncated. PR53218. [Jim Jagielski] *) mod_ssl: Add optional function "ssl_get_tls_cb" to allow support for channel bindings. [Simo Sorce ] *) mod_proxy_wstunnel: Concurrent websockets messages could be lost or delayed with ProxyWebsocketAsync enabled. [Edward Lu ] *) core, mod_info: Add compiled and loaded PCRE versions to version number display. [Rainer Jung] *) mod_authnz_ldap: Return LDAP connections to the pool before the handler is run, instead of waiting until the end of the request. [Eric Covener] *) mod_proxy_html: support automatic detection of doctype and processing of FPIs. PR56285 [Micha Lenk , Nick Kew] *) mod_proxy_html: skip documents shorter than 4 bytes PR 56286 [Micha Lenk ] *) mod_proxy_fdpass: Fix computation of the size of 'struct sockaddr_un' when passed to 'connect()'. [Graham Dumpleton ] *) core: Add ap_mpm_resume_suspended() API to allow a suspended connection to resume. PR56333 [Artem , Edward Lu ] *) core: Add ap_mpm_register_socket_callback_timeout() API. [Eric Covener] *) mod_proxy_wstunnel: Honor ProxyWebsocketIdleTimeout in asynchronous processing mode. [Eric Covener] *) mod_authnz_ldap: Fail explicitly when the filter is too long. Remove unnecessary apr_pstrdup() and strlen(). [Graham Leggett] *) Add the ldap-search option to mod_authnz_ldap, allowing authorization to be based on arbitrary expressions that do not include the username. [Graham Leggett] *) Add the ldap function to the expression API, allowing LDAP filters and distinguished names based on expressions to be escaped correctly to guard against LDAP injection. [Graham Leggett] *) Add module mod_ssl_ct, which provides an implementation of Certificate Transparency (RFC 6962) for httpd. [Jeff Trawick] *) mod_proxy_wstunnel: Avoid sending error responses down an upgraded websockets connection as it is being close down. [Eric Covener] *) mod_proxy_wstunnel: Allow the administrator to cap the amount of time a synchronous websockets connection stays idle with ProxyWebsocketIdleTimeout. [Eric Covener] *) mod_proxy_wstunnel: Change to opt-in for asynchronous support, adding directives ProxyWebsocketAsync and ProxyWebsocketAsyncDelay. [Eric Covener] *) mod_proxy_wstunnel: Stop leaking websockets backend connections under event MPM (trunk-only). [Eric Covener] *) mod_proxy_http: Add detach_backend hook (potentially usable in other proxy scheme handlers). [Jeff Trawick] *) mod_deflate: Add DeflateAlterETag to control how the ETag is modified. The 'NoChange' parameter mimics 2.2.x behavior. PR 45023, PR 39727. [Eric Covener] *) mod_rewrite: Add 'BNF' (backreferences-no-plus) flag to RewriteRule to allow spaces in backreferences to be encoded as %20 instead of '+'. [Eric Covener] *) mod_rewrite: Support an optional list of characters to escape in the argument for the 'B' (escape backreferences) flag. [Eric Covener] *) mod_dir: Default to 2.2-like behavior and skip execution when method is neither GET nor POST, such as for DAV requests. PR 54914. [Chris Darroch] *) mod_rewrite: Rename the handler that does per-directory internal redirects to "rewrite-redirect-handler" from "redirect-handler" so it is less ambiguous and less likely to be reused. [Eric Covener] *) mod_rewrite: Protect against looping with the [N] flag by enforcing a default limit of 10000 iterations, and allowing each rule to change its limit. [Eric Covener] *) mod_ssl: Fix config merging of SSLOCSPEnable and SSLOCSPOverrideResponder. [Jeff Trawick] *) Add HttpContentLengthHeadZero and HttpExpectStrict directives. [Yehuda Sadeh , Justin Erenkrantz] *) mod_ssl: Add -t -DDUMP_CA_CERTS option which dumps the filenames of all configured SSL CA certificates to stdout the same way as DUMP_CERTS does. [Jan Kaluza] *) mod_ssl: Don't flush when an EOS is received. Prepares mod_ssl to support write completion. [Graham Leggett] *) core: Add parse_errorlog_arg callback to ap_errorlog_provider to allow providers to check the ErrorLog argument. [Jan Kaluza] *) mod_cgid: Use the servers Timeout for each read from a CGI script, allow override with new CGIDRequestTimeout directive. PR43494 [Eric Covener, Toshikuni Fukaya ] *) core: ensure any abnormal exit is reported to stderr if it's a tty. PR 55670 [Nick Kew] *) mod_lua: Let the Inter-VM get/set functions work with a global shared memory pool instead of a per-process pool. [Daniel Gruno] *) ldap: Support ldaps when using the Microsoft LDAP SDK. PR 54626. [Jean-Frederic Clere] *) mod_authnz_ldap: Change default value of AuthLDAPMaxSubGroupDepth to 0 to avoid performance problems when subgroups aren't in use. [Eric Covener] *) mod_syslog: New module implementing syslog ap_error_log provider. Previously, this code was part of core, now it's in separate module. [Jan Kaluza] *) core: Add ap_errorlog_provider to make ErrorLog logging modular. Move syslog support from core to new mod_syslog. [Jan Kaluza] *) mod_status, mod_echo: Fix the display of client addresses. They were truncated to 31 characters which is not enough for IPv6 addresses. PR 54848 [Bernhard Schmidt ] *) mod_unique_id: Use output of the PRNG rather than IP address and pid, avoiding sleep() call and possible DNS issues at startup, plus improving randomness for IPv6-only hosts. [Jan Kaluza ] *) mod_file_cache: mod_file_cache should be able to serve files that haven't had a Content-Type set via e.g. mod_mime. [Eric Covener] *) core: merge AllowEncodedSlashes from the base configuration into virtual hosts. [Eric Covener] *) AIX: Install DSO's with "cp" instead of "install" in instdso.sh [Eric Covener] *) mod_ldap: Don't keep retrying if a new LDAP connection times out. [Eric Covener] *) mod_deflate: permit compilation of mod_deflate against a zlib that has been configured with -D Z_PREFIX, which redefines the token "deflate". [Eric Covener] *) mod_auth_digest: Use the secret when generating nonces in all cases and not only when AuthName is used in .htaccess files (this change may cause problems if used with round robin load balancers). Don't regenerate the secret on graceful restarts. PR 54637 [Stefan Fritsch] *) core: Remove apr_brigade_flatten(), buffering and duplicated code from the HTTP_IN filter, parse chunks in a single pass with zero copy. Reduce memory usage by 48 bytes per request. [Graham Leggett] *) core: Stop the HTTP_IN filter from attempting to write error buckets to the output filters, which is bogus in the proxy case. Create a clean mapping from APR codes to HTTP status codes, and use it where needed. [Graham Leggett] *) mod_proxy: Ensure network errors detected by the proxy are returned as 504 Gateway Timout as opposed to 502 Bad Gateway, in order to be compliant with RFC2616 14.9.4 Cache Revalidation and Reload Controls. *) mod_dav: mod_dav overrides dav_fs response on PUT failure. PR 35981 [Basant Kumar Kukreja , Alejandro Alvarez ] *) mod_ldap: LDAP connections used for authentication were not respecting LDAPConnectionPoolTimeout. PR 54587 *) core: ap_rgetline_core now pulls from r->proto_input_filters. *) mod_proxy_html: process parsed comments immediately. Fixes bug where parsed comments may be lost. [Nick Kew] *) mod_proxy_html: introduce doctype for HTML 5 [Nick Kew] *) mod_proxy_html: fix typo-bug processing "strict" vs "transitional" HTML/XHTML [Nick Kew] *) core: Add option to add valgrind support. Use it to reduce false positive warnings in mod_ssl. [Stefan Fritsch] *) mod_authn_file, mod_authn_dbd, mod_authn_dbm, mod_authn_socache: Cache the result of the most recent password hash verification for every keep-alive connection. This saves some expensive calculations. [Stefan Fritsch] *) http: Remove support for Request-Range header sent by Navigator 2-3 and MSIE 3. [Stefan Fritsch] *) core, http: Extend HttpProtocol with an option to enforce stricter HTTP conformance or to only log the found problems. [Stefan Fritsch] *) core: Correctly parse an IPv6 literal host specification in an absolute URL in the request line. [Stefan Fritsch] *) EventOpt MPM *) core: Add LogLevelOverride directive that allows to override the loglevel for clients from certain IPs. This also works for things like the SSL handshake where LogLevel ... is evaluated too late. [Stefan Fritsch] *) core: Add new directive Warning to issue warnings from a configuration file. Both Warning and Error now generate a timestamped log message. [Fabien Coelho] *) ap_expr: Add SERVER_PROTOCOL_VERSION, ..._MAJOR, and ..._MINOR variables. [Stefan Fritsch] *) core: New directive RegisterHttpMethod for registering non-standard HTTP methods. [Stefan Fritsch] *) core: New directive HttpProtocol which allows to disable HTTP/0.9 support. [Stefan Fritsch] *) mod_allowhandlers: New module to forbid specific handlers for specific directories. [Stefan Fritsch] *) mod_systemd: New module, for integration with systemd on Linux. [Jan Kaluza ] *) WinNT MPM: Store pid and generation for each thread in scoreboard to allow tracking of threads from exiting children via mod_status or other such mechanisms. [Jeff Trawick] *) The following now respect DefaultRuntimeDir/DEFAULT_REL_RUNTIMEDIR: - APIs: ap_log_pid(), ap_remove_pid, ap_read_pid() - mod_cache: thundering herd lock directory - mod_lbmethod_heartbeat, mod_heartmonitor: heartbeat storage file - mod_ldap: shared memory cache - mod_socache_shmcb, mod_socache_dbm: shared memory or dbm for cache [Jeff Trawick] *) suexec: Add --enable-suexec-capabilites support on Linux, to use setuid/setgid capability bits rather than a setuid root binary. [Joe Orton] *) suexec: Add support for logging to syslog as an alternative to logging to a file; configure --without-suexec-logfile --with-suexec-syslog. [Joe Orton] *) mod_ssl: Add support for TLS Next Protocol Negotiation. PR 52210. [Matthew Steele ] *) cross-compile: allow to provide CC_FOR_BUILD so that gen_test_char will be compiled by the build compiler instead of the host compiler. Also set CC_FOR_BUILD to 'cc' when cross-compilation is detected. PR 51257. [Guenter Knauf] *) core: In maintainer mode, replace apr_palloc with a version that initializes the allocated memory with non-zero values, except if AP_DEBUG_NO_ALLOC_POISON is defined. [Stefan Fritsch] *) mod_policy: Add a new testing module to help server administrators enforce a configurable level of protocol compliance on their servers and application servers behind theirs. [Graham Leggett] *) mod_firehose: Add a new debugging module able to record traffic passing through the server in such a way that connections and/or requests be reconstructed and replayed. [Graham Leggett] *) mod_noloris *) APREQ *) Simple MPM *) mod_serf [Apache 2.5.0-dev includes those bug fixes and changes with the Apache 2.4.xx tree as documented below, except as noted.] Changes with Apache 2.4.x and later: *) http://svn.apache.org/viewvc/httpd/httpd/branches/2.4.x/CHANGES?view=markup Changes with Apache 2.2.x and later: *) http://svn.apache.org/viewvc/httpd/httpd/branches/2.2.x/CHANGES?view=markup Changes with Apache 2.0.x and later: *) http://svn.apache.org/viewvc/httpd/httpd/branches/2.0.x/CHANGES?view=markup