-*- coding: utf-8 -*- Changes with Apache 2.5.1 *) mod_ssl: Support loading private keys from an OpenSSL engine using a PKCS#11 URI. [Anderson Sasaki , Joe Orton] *) mod_slomem_shm: Handle a generation number when the slotmem size changes, modifying the number of proxy balancers or balancer members on restart could have prevented the server to load, notably on Windows. PR 62308. [Yann Ylavic] *) mod_proxy_html: Fix variable interpolation and memory allocation failure in ProxyHTMLURLMap. [Ewald Dieterich ] *) core: In ONE_PROCESS/debug mode, cleanup everything when exiting. [Yann Ylavic] *) mod_http2: restoring the v1.10.16 keepalive timeout behavioud of mod_http2 (to be verified). [Stefan Eissing] *) mod_http2: adding an abort function to slave connections' pools, so out-of-memory events lead to a control process abort, as on HTTP/1.x connections. [Stefan Eissing] *) mod_http2: adding regular memory cleanup when transferring large response bodies. This reduces memory footprint and avoids memory exhaustion when transferring large files on 32-bit architectures. Fixes PR 62325. [Stefan Eissing] *) http: LimitRequestBody applies to proxied requests. [Yann Ylavic] *) mod_proxy_http: Fix response header thrown away after the previous one was considered too large and truncated. PR 62196. [Yann Ylavic] *) core: Add and handle AP_GETLINE_NOSPC_EOL flag for ap_getline() family of functions to consume the end of line when the buffer is exhausted. PR 62198. [Yann Ylavic] *) mod_xml2enc: Fix forwarding of error metadata/responses. PR 62180. [Micha Lenk , Yann Ylavic] *) mod_proxy_http: Add new worker parameter 'responsefieldsize' to allow maximum HTTP response header size to be increased past 8192 bytes. PR62199. [Hank Ibell ] *) core: Preserve the original HTTP request method in the '%] *) mod_proxy_balancer: Add hot spare member type and corresponding flag (R). Hot spare members are used as drop-in replacements for unusable workers in the same load balancer set. This differs from hot standbys which are only used when all workers in a set are unusable. PR 61140. [Jim Riggs] *) mod_logio: Add LogIOTrackTTFU and %^FU logformat to log the time difference between request start and last request body byte read (finished upload). [Rainer Jung] *) mod_ssl: add support for TLSv1.3 (tested with OpenSSL v1.1.1-pre4, other libs may need more sugar). SSL(Proxy)CipherSuite now has an optional first parameter for the protocol the ciphers are for. Directive "SSLVerifyClient" now triggers certificate retrieval from the client (this is not fully tested - but fails in similar fashion as in TLSv1.2 in my setups). Verifying the client fails exactly the same for HTTP/2 connections for all SSL protocols, as this would need to trigger the master connection thread - which we do not support right now. Renegotiation of ciphers is intentionally ignored for TLSv1.3 connections. "SSLCipherSuite" does not allow to specify TLSv1.3 ciphers in a directory context (because it cannot work) and TLSv1.2 or lower ciphers are not relevant, as cipher suites are completely separate. This means there is a bit if a world split when simultaneously having TLSv1.2 and TLSv1.3 connections to the same server. [Stefan Eissing] *) mod_http2: accurate reporting of h2 data input/output per request via mod_logio. Fixes an issue where output sizes where counted n-times on reused slave connections. See gituhub issue: https://github.com/icing/mod_h2/issues/158 [Stefan Eissing] *) mod_proxy: Do not restrict the maximum pool size for backend connections any longer by the maximum number of threads per process and use a better default if mod_http2 is loaded. [Yann Ylavic, Ruediger Pluem, Stefan Eissing, Gregg Smith] *) mod_ssl: Fix merging of proxy SSL context outside sections, regression introduced in 2.4.30. PR 62232. [Rainer Jung, Yann Ylavic] *) mod_ssl: proper checks for libressl 2.07/8 and its TLSv1_3 support, see PR 62236. [Bernard Spil ] *) mod_http2: on level trace2, log any unsuccessful HTTP/2 direct connection upgrade with base64 encoding to unify its appearance in possible bug reports. [Stefan Eissing] *) mod_cgi: Add CGIScriptTimeout to make mod_cgi's timeout per-directory and independent of the core Timeout directive. PR 62229. [Hank Ibell ] *) mod_remoteip: Restore compatibility with APR 1.4 (apr_sockaddr_is_wildcard). [Eric Covener] *) mod_ssl: heavily simplified SSLPolicy. No more user defines, no propxy policies, just the basic "modern", "intermediate" and "old" as specified by Mozilla security. [Stefan Eissing] *) mod_remoteip: make proxy-protocol work on slave connections, e.g. in HTTP/2 requests. See also https://github.com/roadrunner2/mod-proxy-protocol/issues/6 [Stefan Eissing] *) mod_md: fixes error in renew window calculation that may lead to mod_md running watchdog in a tight loop until actual renewal becomes necessary. [Stefan Eissing] *) mod_md: /.well-known/acme-challenge requests that cannot be answered for hostnames outside the configured MDs are free to be answered by other handlers. This allows co-existance between mod_md and other ACME clients on the same server (implements PR62189). [Stefan Eissing, Arkadiusz Miskiewicz ] *) mod_md: Fix compilation with OpenSSL before version 1.0.2. [Rainer Jung] *) core: Create a conn_config_t structure to hold an extendable core config rather than consuming the whole pointer with the connection socket. [Graham Leggett] *) core: adding AP_DECLARE for ap_parse_vhost_addrs() and minor bumb mmn. Resolves building mod_ssl on Windows. [Stefan Eissing, Gregg Smith] *) mod_http2: discourage gzip/brotli content encoding on http2-status responses as they are inserted into the reponse when filters are already done. [Stefan Eissing] *) core: adding defines to allow interworking with honggfuzz without further patches. [Stefan Eissing, Robert Swiecki] *) mod_headers: 'RequestHeader set|edit|edit_r Content-Type X' could inadvertently modify the Content-Type _response_ header. Applies to Content-Type only and likely to only affect static file responses. [Eric Covener] *) mod_cgi: Improve AH01215 messages to make it more clear that the message is the CGI scripts stderr output. PR 61980. [Hank Ibell ] *) mod_headers: Allow 'Header unset Content-Type' to remove the Content-Type header. PR 61983. [Hank Ibell ] *) mod_md v1.1.8: new configuration directive "MDBaseServer on|off" to allow/inhibit management of the base server domains outside VirtualHosts. By default, this is "off", e.g. mod_md will not manage certificates or perform https: redirections on the base server. [Stefan Eissing] *) core: Add "AcceptErrorsNonFatal" to allow ECONNREFUSED, ECONNABORTED, and ECONNRESET during the client accept() to not trigger graceful shutdown of the child process. [Eric Covener] *) mod_md v1.1.7: - MDMustStaple was unable to create the necessary OpenSSL OBJ identifier on some platforms, possibly because this fails if the OID is already configured in ```openssl.cnf```, see [here](https://github.com/openssl/openssl/issues/2795). - Two memory leaks in cert issuer and alt-names lookup eliminated by Yann Ylavic. - Changing MDMustStaple triggers certificate renewal. - More verbosity when *not* handing out certificates, e.g. mod_ssl asks, but mod_md has no idea what it is talking about. Some people report misbehaviour here. - Re-enabled support for md_get_credentials() function that was used in older mod_ssl patch, so that people with old patched servers get a chance to upgrade. [Stefan Eissing, Yann Ylavic] *) mod_susbtitute: Allow expressions in the subtitution, prefixed with expr= [Eric Covener] *) mod_md: fixed mem pool usage for auto-added server names. Added error logging of exact ACME response when challenges failed. [Stefan Eissing] *) mod_dumpio: do nothing below log level TRACE7. [Yann Ylavic] *) mod_md: reverses most of v1.0.5 optimization of post_config init, so that mod_ssl can ask for certiticates without crashing. [Stefan Eissing] *) mod_proxy: allow SSLProxyCheckPeer* usage for all proxy modules. PR 61857. [Yann Ylavic] *) mod_proxy_html: fix handling of elements. PR 58121. [Nick Kew] *) mod_md: fixed backward compatibility to old is now . [Stefan Eissing] *) mod_ssl: renamed section . [Stefan Eissing] *) mod_md: new module for managing domains across VirtualHosts with ACME protocol implementation for automated certificate signup and renewal. Default CA is the test area of Let's Encrypt right now, so certificates root will not be valid. Will be switched to the real service endpoint rather soon. If you need it now, configure 'MDCertificateAuthority https://acme-v01.api.letsencrypt.org/directory'. [Stefan Eissing] *) mod_rewrite: Add 'RewriteOptions LongURLOptimization' to free memory from each set of unmatched rewrite conditions. [Eric Covener] *) Allow the argument to , , , , and to be quoted. This is primarily for the benefit of . [Eric Covener] *) Introduce request taint checking framework to prevent privilege hijacking through .htaccess. [Nick Kew] *) Add and directives. [Joe Orton] *) 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_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] *) 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] *) 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] *) 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] *) 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] *) 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_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] *) 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] *) 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_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 ] *) 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: 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: 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] *) 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 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