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Changes with Apache 2.0.41
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  *) mod_disk_cache works much better. This module should still
     be considered experimental. [Eric Prud'hommeaux]
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  *) Performance improvement for keepalive requests: when setting
     aside a small file for potential concatenation with the next
     response on the connection, set aside the file descriptor rather
     than copying the file into the heap.  [Brian Pane]
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Changes with Apache 2.0.40
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  *) SECURITY: [CAN-2002-0661] Close a very significant security hole that 
     applies only to the Win32, OS2 and Netware platforms.  Unix was not 
     affected, Cygwin may be affected.  Certain URIs will bypass security
     and allow users to invoke or access any file depending on the system 
     configuration.  Without upgrading, a single .conf change will close 
     the vulnerability.  Add the following directive in the global server
     httpd.conf context before any other Alias or Redirect directives;
         RedirectMatch 400 "\\\.\."
     Reported by Auriemma Luigi <bugtest@sitoverde.com>.
     [Brad Nicholes]

  *) SECURITY:  Close a path-revealing exposure in multiview type
     map negotiation (such as the default error documents) where the
     module would report the full path of the typemapped .var file when
     multiple documents or no documents could be served based on the mime
     negotiation.  Reported by Auriemma Luigi <bugtest@sitoverde.com>.
     [CAN-2002-0654]  [William Rowe]

  *) SECURITY:  Close a path-revealing exposure in cgi/cgid when we 
     fail to invoke a script.  The modules would report "couldn't create 
     child process /path-to-script/script.pl" revealing the full path
     of the script.  Reported by Jim Race <jrace@qualys.com>.
     [CAN-2002-0654]  [Bill Stoddard]

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  *) Set aside the apr-iconv and apr_xlate() features for the Win32
     build of 2.0.40 so development can be completed.  A patch, from
     <http://www.apache.org/dist/httpd/patches/apply_to_2.0.40/>
     will be available for those that wish to work with apr-iconv.
     [William Rowe]

  *) Fix proxy so that it is possible to access ftp: URLs via a proxy
     chain. [Peter Van Biesen <peter.vanbiesen@vlafo.be>]

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  *) mod-deflate now checks to make sure that 'gzip-only-text/html' is
     set to 1, so we can exclude things from the general case with
     browsermatch. [Ian Holsman, Andre Schild <A.Schild@aarboard.ch>]
  
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  *) Accept multiple leading /'s for requests within the DocumentRoot.
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     PR 10946  [William Rowe, David Shane Holden <dpejesh@yahoo.com>]
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  *) Solved the reports of .pdf byterange failures on Win32 alone.
     APR's sendfile for the win32 platform collapses header and trailer
     buffers into a single buffer.  However, we destroyed the pointers
     to the header buffer if a trailer buffer was present.  PR 10781
     [William Rowe]

  *) mod_ext_filter: Add the ability to enable or disable a filter via
     an environment variable.  Add the ability to register a filter of
     type other than AP_FTYPE_RESOURCE.  [Jeff Trawick]

  *) Restore the ability to specify host names on Listen directives.
     PR 11030.  [Jeff Trawick, David Shane Holden <dpejesh@yahoo.com>]

  *) When deciding on the default address family for listening sockets, 
     make sure we can actually bind to an AF_INET6 socket before
     deciding that we should default to AF_INET6.  This fixes a startup
     problem on certain levels of OpenUNIX.  PR 10235.  [Jeff Trawick]

  *) Replace usage of atol() to parse strings when we might want a
     larger-than-long value with apr_atoll(), which returns long long.
     This allows HTTPD to deal with larger files correctly.
     [Shantonu Sen <ssen@apple.com>]

  *) mod_ext_filter: Ignore any content-type parameters when checking if
     the response should be filtered.  Previously, "intype=text/html"
     wouldn't match something like "text/html;charset=8859_1".
     [Jeff Trawick]

  *) mod_ext_filter: Set up environment variables for external programs.
     [Craig Sebenik <craig@netapp.com>]

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  *) Modified the HTTP_IN filter to immediately append the EOS (end of
     stream) bucket for C-L POST bodies, saving a roundtrip and allowing
     the caller to determine that no content remains without prefetching
     additional POST body.  [William Rowe]

  *) Get proxy ftp to work over IPv6.  [Shoichi Sakane <sakane@kame.net>]

  *) Look for OpenSSL libraries in /usr/lib64.  [Peter Poeml <poeml@suse.de>]

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  *) Update SuSE layout.  [Peter Poeml <poeml@suse.de>]

  *) Changes to the internationalized error documents:
     Comment them out in the default config file to make the default
     install as simple as possible; Correct the english 500 error to
     be more understandable; Add a Swedish translation.
     [Thomas Sjogren <thomas@northernsecurity.net>, 
      Erik Abele <erik@codefaktor.de>, Rich Bowen, Joshua Slive]
     
  *) Increase the limit on file descriptors per process in apachectl.
     [Brian Pane]

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  *) Fix a dependency error when building ApacheMonitor, so that Win32
     and MSVC now trust that the project is current (when it is).
     [James Cox <imajes@php.net>]

  *) mod_ext_filter: don't segfault if content-type is not set.  PR 10617.
     [Arthur P. Smith <apsmith@aps.org>, Jeff Trawick]

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  *) APR-Util Renames pending have been completed [Thom May]

  *) Performance improvements for the code that reads request
     headers (ap_rgetline_core() and related functions)  [Brian Pane]

  *) Add a new directive: MaxMemFree.  MaxMemFree makes it possible
     to configure the maximum amount of memory the allocators will
     hold on to for reuse.  Anything over the MaxMemFree threshold
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     will be free()d.  This directive is useful when uncommon large
     peaks occur in memory usage.  It should _not_ be used to mask
     defective modules' memory use.  [Sander Striker]
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  *) Fixed the Content-Length filter so that HTTP/1.0 requests to CGI
     scripts would not result in a truncated response.
     [Ryan Bloom, Justin Erenkrantz, Cliff Woolley]

  *) Add a filter_init parameter to the filter registration functions
     so that a filter can execute arbitrary code before the handlers
     are invoked.  This resolves a problem where mod_include requests
     would incorrectly return a 304.  [Justin Erenkrantz]

  *) Fix a long-standing bug in 2.0, CGI scripts were being called
     with relative paths instead of absolute paths.  Apache 1.3 used
     absolute paths for everything except for SuExec, this brings back
     that standard.  [Ryan Bloom]

  *) Fix infinite loop due to two HTTP_IN filters being present for
     internally redirected requests.  PR 10146.  [Justin Erenkrantz]

  *) Switch conn_rec->keepalive to an enumeration rather than a bitfield.
     [Justin Erenkrantz]

  *) Fix mod_ext_filter to look in the main server for filter definitions
     when running in a vhost if the filter definition is not found in
     the vhost.  PR 10147  [Jeff Trawick]

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  *) Support WinNT CGI invocation through ScriptInterpreterSource 
     'registry' for script interpreter paths and names with non-ascii
     characters in the executable filepath.  [William Rowe]

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  *) Support the -w flag on to keep the Win32 console open on error.
     [William Rowe]

  *) Normalize the hostname value in the request_rec to all-lowercase
     [Perry Harrington <pedward@webcom.com>]

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  *) Fix WinNT cgi 500 errors when QUERY_ARGS or other strings include
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     extended characters (non US-ASCII) in non-utf8 format.  This brings
     Win32 back into CGI/1.1 compliance, and leaves charset decoding up
     to the cgi application itself.  [William Rowe]

  *) Major overhaul of mod_dav, mod_dav_fs and the experimental/cache
     modules to bring them up to the current apr/apr-util APIs.
     [William Rowe]

  *) Fix segfault in mod_mem_cache most frequently observed when
     serving the same file to multiple clients on an MP machine.
     [Bill Stoddard]
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  *) mod_rewrite can now set cookies  (RewriteRule (.*) - [CO=name:$1:.domain])
     [Brian Degenhardt <bmd@mp3.com>, Ian Holsman]

  *) Fix perchild to work with apachectl by adding -k support to perchild.
     PR 10074  [Jeff Trawick]

  *) Fix a silly htpasswd.c logic error that incorrectly reported that
     both -c and -n had been used.  PR 9989  [Cliff Woolley]

  *) Fixed a mod_include error case in which no HTTP response was sent
     to the client if an shtml document contained an unterminated SSI
     directive [Brian Pane]

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  *) Improve ap_get_client_block implementation by using APR-util brigade
     helper functions and relying on current filter assumptions.
     [Justin Erenkrantz]

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Changes with Apache 2.0.39

  *) Fixed a build problem in htpasswd.c on Win32.
     [Guenter Knauf <eflash@gmx.net>, Cliff Woolley]
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Changes with Apache 2.0.38

  *) Rewrite htpasswd to use APR.  The removes the annoying warning about
     tmpnam being unsafe.   [Ryan Bloom]

  *) We must set the MIME-type for .shtml files to text/html if we want them
     to be parsed for SSI tags.  Add the config for that to the default 
     config file so that it is easier to enable .shtml parsing.
     [Dave Dyer <ddyer@real-me.net>]

  *) Fixed a problem with 'make install' on ReliantUnix.
     [Jean-frederic Clere <jfrederic.clere@fujitsu-siemens.com>]

  *) Make the default_handler catch all requests that aren't served by
     another handler.  This also gets us to return a 404 if a directory
     is requested, there is no DirectoryIndex, and mod_autoindex isn't
     loaded.  [Justin Erenkrantz]

  *) Fixed the handling of nested if-statements in shtml files.
     PR 9866  [Brian Pane]

  *) Allow 'make install DESTDIR=/path'.  This allows packagers to install
     into a directory different from the one that was configured.  This 
     also mirrors the root= feature from 1.3.  We cannot use prefix=,
     because both APR and APR-util resolve their installation paths at 
     configuration time.  This means that there is no variable prefix 
     to replace.  [Andreas Hasenack <andreas@netbank.com.br>]

  *) AIX 4.3.2 and above: Define SINGLE_LISTEN_UNSERIALIZED_ACCEPT.
     These levels of AIX don't have a thundering herd problem with
     accept().  [Jeff Trawick]

  *) prefork MPM: Ignore mutex errors during graceful restart.  For
     certain types of mutexes (particularly SysV semaphores), we
     should expect to occasionally fail to obtain or release the
     mutex during restart processing.  [Jeff Trawick]

  *) Fix install-bindist.sh so that it finds any perl instead of just
     early perl 5.x versions.  This is consistent with a build/install
     from source, and it allows the perl scripts installed by a bindist 
     to work on systems with perl 5.6.  [Jeff Trawick]

  *) Fix apxs so that the makefile created by "apxs -g" works on AIX and
     Tru64 (and probably some other platforms).  [Jeff Trawick]

  *) Allow CGI scripts to return their Content-Length.  This also fixes a
     hang on HEAD requests seen on certain platforms (such as FreeBSD).
     [Justin Erenkrantz]

  *) Added log rotation based on file size to the RotateLog support
     utility. [Brad Nicholes]

  *) Fix some casting in mod_rewrite which broke random maps.
     PR 9770  [Allan Edwards, Greg Ames, Jeff Trawick]
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Changes with Apache 2.0.37

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  *) allow POST method over SSL when per-directory client cert
     authentication is used with 'SSLOptions +OptRenegotiate' enabled
     and a client cert was found in the ssl session cache.

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  *) 'SSLOptions +OptRengotiate' will use client cert in from the ssl
     session cache when there is no cert chain in the cache.  prior to
     the fix this situation would result in a FORBIDDEN response and
     error message "Cannot find peer certificate chain"
     [Doug MacEachern]

  *) ap_finalize_sub_req_protocol() shouldn't send an EOS bucket if
     one was already sent.  PR 9644  [Jeff Trawick]

  *) Fix the display of the default name for the mime types config
     file.  PR 9729  [Matthew Brecknell <mbrecknell@orchestream.com>]

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  *) Fix the working directory *for WinNT/2K/XP services only* to
     change to the Apache directory (one level above the location 
     of Apache.exe, in the case that Apache.exe resides in bin/.)
     Solves the case of ServerRoot /foo paths where /foo was not
     on the same drive as /winnt/system32.  [William Rowe]

  *) Make 2.0's "AcceptMutex" startup message now "completely"
     match how 1.3 does it. [Jim Jagielski]

  *) Implement a fixed size memory cache using a priority queue
     [Ian Holsman]

  *) Fix apxs to allow "apxs -q installbuilddir" and to allow
     querying certain other variables from config_vars.mk.  PR 9316  
     [Jeff Trawick]

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  *) Added the "detached" attribute to the cgi_exec_info_t internals
     so that Win32 and Netware won't create a new window or console
     for each CGI invoked.  PR 8387
     [Brad Nicholes, William Rowe]

  *) Consolidated the command line parameters and attributes that are 
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     manipulated by the optional function ap_cgi_build_command() in
     mod_cgi into a single structure.
  *) Get rid of uninitialized value errors with "apxs -q" on certain
     variables.  [Stas Bekman <stas@stason.org>]

  *) Fix apxs to allow it to work when the build directory is somewhere
     besides server-root/build.  PR 8453  
     [Jeff Trawick and a host of others]

  *) Allow ap_discard_request_body to be called multiple times in the
     same request.  Essentially, ap_http_filter keeps track of whether
     it has sent an EOS bucket up the stack, if so, it will only ever
     send an EOS bucket for this request.  
     [Ryan Bloom, Justin Erenkrantz, Greg Stein]

  *) Remove all special mod_ssl URIs.  This also fixes the bug where
     redirecting (.*) will allow an SSL protected page to be viewed
     without SSL.  [Ryan Bloom]

  *) Fix the binary build install script so that the build logic
     created by "apxs -g" will work when the user has a binary
     build.  [Jeff Trawick]

  *) Allow instdso.sh to work with full paths to the shared module.
     [Justin Erenkrantz]

  *) NetWare: Enabled CGI functionality and added mod_cgi as a built
     in module for NetWare  [Brad Nicholes]

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  *) Changed cgi and piped log behavior to accept 65536 characters
     on Win32 (matching Linux) before deadlocking between outputing
     client stdin, slurping the output from stdout and then the stderr
     stream.  PR 8179  [William Rowe]

  *) Fixed Win32 wintty.exe support to assure the window title is valid.
     Elimiates possible gpfault or garbage title without the -t option.
     [William Rowe]

  *) Rewrite mod_cgi, mod_cgid, and mod_proxy input handling to use
     brigades and input filters.  [Justin Erenkrantz]
  *) Allow ap_http_filter (HTTP_IN) to return EOS when there is no request
     body.  [Justin Erenkrantz]
    
  *) NetWare: Piping log entries through RotateLogs using the 
     CustomLogs directive is finally supported now that we have 
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     the pipes and spawning functionality working.
  *) Detect overflow when reading the hex bytes forming a chunk line.
     [Aaron Bannert]

  *) Allow RewriteMap prg:'s to take command-line arguments.  PR 8464.
     [James Tait <JTait@wyrddreams.demon.co.uk>]

  *) Correctly return 413 when an invalid chunk size is given on
     input.  Also modify ap_discard_request_body to not do anything
     on sub-requests or when the connection will be dropped.
     [Justin Erenkrantz]

  *) Fix the TIME_* SSL var lookups to be threadsafe.  PR 9469.
     [Cliff Woolley]

  *) Ensure that apr_brigade_write() flushes in all of the cases that
     it should to avoid conditions in some modules that could cause
     large amounts of data to be buffered.  [Cliff Woolley]

  *) Fix problem where mod_cache/mod_disk_cache was incorrectly
     stripping the content_type from cached responses.
     [Bill Stoddard]
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  *) apachectl passes through any httpd options.  Note: apachectl
     should be used in preference to httpd since it ensures that any
     appropriate environment variables have been set up.
     [Jeff Trawick]

  *) Fix the combination of mod_cgid, mod_setuexec, and mod_userdir.
     PR 7810  [Colm MacCarthaigh <colmmacc@redbrick.dcu.ie>]

  *) Fix suexec execution of CGI scripts from mod_include.
     PR 7791, 8291  [Colm MacCarthaigh <colmmacc@redbrick.dcu.ie>]

  *) Fix segfaults at startup on some platforms when mod_auth_digest,
     mod_suexec, or mod_ssl were used as DSO's due to the way they
     were tracking the current init phase since DSO's get completely
     unloaded and reloaded between phases.  PR 9413.
     [Tsuyoshi Sasamoto <nazonazo@super.win.ne.jp>, Brad Nicholes]

  *) Fix mod_include's handling of regular expressions in
     "<!--#if" directives [Julius Gawlas <julius_gawlas@hp.com>]

  *) Fix the worker MPM deadlock problem  [Brian Pane]

  *) Modify the module documentation to allow for translations.
     [Yoshiki Hayashi, Joshua Slive]

  *) Fix a file permissions problem which prevented mod_disk_cache
     from working on Unix.  [Jeff Trawick]

  *) Add "-k start|restart|graceful|stop" support to httpd for the Unix 
     MPMs.  These have semantics very similar to the old apachectl 
     commands of the same name.  [Justin Erenkrantz, Jeff Trawick]
  *) Make sure that the runtime dir is created by make install.
     PR 9233.  [Jeff Trawick]

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  *) Fix an unusual set of ./configure arguments that could cause
     mod_http to be built as a DSO, which it currently doesn't
     support.  PR 9244.
     [Cliff Woolley, Robin Johnson <robbat2@orbis-terrarum.net>]

  *) Win32: Fix bug in apr_sendfile() that caused incorrect operation
     of the %X, %b and %B logformat options. PR 8253, 8996.
     [Bill Stoddard]
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  *) If content-encoding is already present, do not run deflate (PR 9222)
     [Kazuhisa ASADA <kaz@asada.sytes.net>]

  *) The APLOG_NOERRNO flag to ap_log_[r]error() is now deprecated.
     It is currently ignored and it will be removed in a future release
     of Apache.  [Jeff Trawick]

  *) Removed documentation references to the no-longer-supported
     "make certificate" feature of mod_ssl for Apache 1.3.x.  Test
     certificates, if truly desired, can be generated using openssl
     commands.  PR 8724.  [Cliff Woolley]

  *) Remove SSLLog and SSLLogLevel directives in favor of having
     mod_ssl use the standard ErrorLog directives.  [Justin Erenkrantz]

  *) OS/390: LIBPATH no longer has to be manually uncommented in
     envvars to get apachectl to set up httpd properly.  [Jeff Trawick]

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  *) mod_isapi: All mod_isapi directives, excluding ISAPICacheFile,
     may now be specified to the <File/Directory > container, rather
     than by vhost.  [William Rowe]

  *) mod_isapi: Experimental support for faux async support for ISAPI
     modules.  [William Rowe]

  *) mod_isapi: Major refactoring of the code to rely on apr internals
     rather than MS APIs (using our own mod_isapi.h headers for ISAPI
     symbol definitions.)  [William Rowe]

  *) mod_isapi: Fixed the return string length from GetServerVariable
     callback, it was not including the trailing null in the consumed
     buffer size.  This was particularly bad for Delphi 6.0 users.
     PR 8934  [Sebastian Hantsch <sebastian.hantsch@gmx.de>]

  *) Fixed Win32 builds for Microsoft VisualStudio 7.0 (.net).
     [William Rowe]

  *) Make apxs look in the correct directory for envvars.  It was
     broken when sbindir != bindir.  PR 8869
     [Andreas Sundström <sunkan@zappa.cx>]
  
  *) Fix mod_deflate corruption when using multiple buckets.  PR 9014.
     [Asada Kazuhisa <kaz@asada.sytes.net>]

  *) Performance enhancements for access logger when using
     default timestamp formatting  [Brian Pane]

  *) Added EnableMMAP config directive to enable the server
     administrator to disable memory-mapping of delivered files
     on a per-directory basis.  [Brian Pane]

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  *) Performance enhancements for mod_setenvif  [Brian Pane]

  *) Fix a mod_ssl build problem on OS/390.  [Jeff Trawick]

  *) Fixed If-Modified-Since on Win32, which would give false positives
     because of the sub-second resolution of file timestamps on that
     platform.  [Cliff Woolley]

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  *) Reverse the hook ordering for mod_userdir and mod_alias so
     that Alias/ScriptAlias will override Userdir.  PR 8841
     [Joshua Slive]

  *) Move mod_deflate out of experimental and into filters.
     [Justin Erenkrantz]

  *) Get proxy CONNECT basically working.  [Jeff Trawick]

  *) Fix mod_rewrite hang when APR uses SysV Semaphores and
     RewriteLogLevel is set to anything other than 0.  PR: 8143
     [Aaron Bannert, Cliff Woolley]

  *) Fix byterange requests from returning 416 when using dynamic data
     (such as filters like mod_include).  [Justin Erenkrantz]

  *) Allow mod_rewrite's set of "int:" internal RewriteMap functions
     to be extended by third-party modules via an optional function.
     [Tahiry Ramanamampanoharana <nomentsoa@hotmail.com>, Cliff Woolley]

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  *) Fix mod_include expression parser's handling of unquoted strings
     followed immediately by a closing paren.  PR 8462.  [Brian Pane]

  *) Remove autom4te.cache in 'make distclean'.
     [Thom May <thom@planetarytramp.net>]

  *) Fix generated httpd.conf to respect layout for LoadModule lines.
     PR 8170.  [Thom May <thom@planetarytramp.net>]

  *) Win32: During a graceful restart, threads in the new process
     were accessing scoreboard slots still in use by active threads in 
     the the old process. [Bill Stoddard]
Changes with Apache 2.0.36

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  *) Fix some minor formatting issues with ab. Part of this is
     in reference to PR 8544, the rest I noticed while testing
     the PR fix. [Paul J. Reder]

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  *) Fix a case where an invalid pass phrase is entered and an
     error message is given, but the prompt is not shown again.
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     This left the user in an ambiguous state. PR 8320 [Paul J. Reder]
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  *) Close sockets on worker MPM when doing a graceless restart.
     [Aaron Bannert]

  *) Reverted a minor optimization in mod_ssl.c that used the vhost ID
     as the session id context rather that a MD5 hash of that vhost ID,
     because it caused very long vhost id's to be unusable with mod_ssl.
     PR 8572.  [Cliff Woolley]

  *) Fix the link to the description of the CoredumpDirectory 
     directive in the server-wide document.  PR 8643.  [Jeff Trawick]

  *) Fixed SHMCB session caching.  [Aaron Bannert, Cliff Woolley]

  *) Synced with remaining changes from mod_ssl 2.8.8-1.3.24:
     - Avoid SIGBUS on sparc machines with SHMCB session caches
     - Allow whitespace between the pipe and the name of the
     program in SSLLog "| /path/to/program".  [Cliff Woolley]

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  *) Introduce mod_ext_filter and mod_deflate experimental modules
     to the Win32 build (zlib sources must be in srclib\zlib.)
     [William Rowe]

  *) Changes to the worker MPM's queue management and thread
     synchronization code to reduce mutex contention  [Brian Pane]

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  *) Don't install *.in configuration files since we already install
     *-std.conf files.  [Aaron Bannert]

  *) Many improvements to the threadpool MPM.  [Aaron Bannert]

  *) Fix subreqs that are promoted via fast_redirect from having invalid
     frec->r structures.  This would cause subtle errors later on in
     request processing such as seen in PR 7966.  [Justin Erenkrantz]

  *) More efficient pool recycling logic for the worker MPM [Brian Pane]

  *) Modify the worker MPM to not accept() new connections until
     there is an available worker thread. This prevents queued
     connections from starving for processing time while long-running
     connections were hogging all the available threads.  [Aaron Bannert]

  *) Convert the worker MPM's fdqueue from a LIFO back into a FIFO.
     [Aaron Bannert]

  *) Get basic HTTP proxy working on EBCDIC machines.  [Jeff Trawick]

  *) Allow mod_unique_id to work on systems with no IPv4 address
     corresponding to their host name.  [Jeff Trawick]

  *) Fix suexec behavior with user directories.  PR 7810.
     [Colm <colmmacc@redbrick.dcu.ie>]

  *) Reject a blank UserDir directive since it is ambiguous.  PR 8472.
     [Justin Erenkrantz]

  *) Make mod_mime use case-insensitive matching when examining
     extensions on all platforms.  PR 8223.  [Justin Erenkrantz]

  *) Add an intelligent error message should no proxy submodules be
     valid to handle a request. PR 8407 [Graham Leggett]

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  *) Major improvements in concurrent processing for AB by enabling
     non-blocking connect()s and preventing APR from doing blocking
     read()s. Also implement fatal error checking for apr_recv().
     [Aaron Bannert]

William A. Rowe Jr's avatar
 
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  *) Fix Win32 NTFS Junctions (symlinks).  PR 8014  [William Rowe]

  *) Fix Win32 'short name' aliases in httpd.conf directives.
     PR 8009  [William Rowe]

  *) Fix generation of default httpd.conf when the layout paths are
     disjoint.  PR 7979, 8227.  [Justin Erenkrantz]
  *) Swap downgrade-1.0 and force-response-1.0 conditional checks so
     that downgraded responses can have force-response.  PR 8357.
     [Justin Erenkrantz]

  *) Fix perchild MPM so that it can be configured with the move to the
     experimental directory.  [Scott Lamb <slamb@slamb.org>]

  *) Fix perchild MPM so that it uses ap_gname2id for groups instead of
     ap_uname2id. [Scott Lamb <slamb@slamb.org>]

  *) Fix AcceptPathInfo. PR 8234  [Cliff Woolley]

  *) SECURITY: Added the APLOG_TOCLIENT flag to ap_log_rerror() to
     explicitly tell the server that warning messages should be sent 
     to the client in addition to being recorded in the error log. 
     Prior to this change, ap_log_rerror() always sent warning 
     messages to the client. In one case, a faulty CGI script caused
     the server to send a warning message to the client that contained
     the full path to the CGI script. This could be considered a
     minor security exposure. [Bill Stoddard]
  *) mod_autoindex output when SuppressRules was specified would
     omit the first carriage return so the first item in the list
     would appear to the right of the column headings instead of
     underneath them. PR 8016  [David Shane Holden <dpejesh@yahoo.com>]

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  *) Moved the call to apr_mmap_dup outside the error branch so
     that it would actually get called. This fixes a core dump
     at init everytime you use the MMapFile directive. PR 8314
     [Paul J. Reder]
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  *) Trigger an error when a LoadModule directive attempts to
     load a module which is built-in.  This is a common error when
     switching from a DSO build to a static build.  [Jeff Trawick]

  *) Change instdso.sh to use libtool --install everywhere and then
     clean up some stray files and symlinks that libtool leaves around
     on some platforms.  This gets subversion building properly since
     it needed a re-link to be performed by libtool at install time,
     and the old instdso.sh logic to simply cp the DSO didn't handle
     that requirement.  [Sander Striker]

  *) Allow VPATH builds to succeed when configured from an empty
     directory.  [Thom May <thom@planetarytramp.net>]

  *) Fix 'control reaches end of non-void function' warning in
     server/log.c.  [Ben Collins-Sussman <sussman@collab.net>]

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  *) Perchild MPM is now correctly deemed as experimental and is now
     located in server/mpm/experimental.  [Justin Erenkrantz]

  *) Fix segfault in mod_mem_cache when garabge collecting an expired
     cache entry.  [Bill Stoddard]
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  *) Introduced -E startup_logfile_name option to httpd to allow admins
     to begin logging errors immediately.  This provides Win32 users 
     an alternative to sending startup errors to the event viewer, and
     allows other daemon tool authors an alternative to logging to stderr.
     [William Rowe] 
     
  *) Fix subreqs with non-defined Content-Types being served improperly.
     [Justin Erenkrantz]

  *) Merge in latest GNU config.guess and config.sub files.  PR 7818.
     [Justin Erenkrantz]

  *) Move 100 - Continue support to the HTTP_IN filter so that filters
     are guaranteed to support 100 - Continue logic without any
     intervention.  [Justin Erenkrantz]

  *) Add HTTP chunked input trailer support.  [Justin Erenkrantz]

  *) Rename and export get_mime_headers as ap_get_mime_headers.
     [Justin Erenkrantz]

  *) Allow empty Host: header arguments.  PR 7441.  [Justin Erenkrantz]

  *) Properly substitute sbindir as httpd's location in apachectl.  PR 7840.
     [Andreas Hasenack <andreas@netbank.com.br>]

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  *) Allow Win32 shebang scripts to follow the path (or omit the .exe
     suffix from the shebang command), and allow ScriptInterpreterSource
     Registry or RegistryStrict to override shebang lines, as 1.3 did.
William A. Rowe Jr's avatar
 
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     PR 8004  [William Rowe]
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  *) worker MPM: Fix a situation where a child exited without releasing
     the accept mutex.  Depending on the OS and mutex mechanism this 
     could result in a hang.  [Jeff Trawick]

  *) Update the instructions for how to get started with mod_example.
     [Stas Bekman]
  
  *) Fix PidFile to default to rel_runtimedir instead of
     rel_logfiledir.  PR 7841.  [Andreas Hasenack <andreas@netbank.com.br>]

  *) Win32: Fix problem that caused rapid performance degradation
     when number of connecting clients exceeded ThreadsPerChild.
     [Bill Stoddard]
  *) Fixed a segfault parsing large SSIs on non-mmap systems.
     [Brian Havard]

  *) Proxy was bombing out every second keepalive request, caused by a
     stray CRLF before the second response's status line. Proxy now
     tries to read one more line if it encounters a CRLF where it
     expected a status. PR 10010 [Graham Leggett]

  *) Deprecated the apr_lock.h API. Please see the following files
     for the improved thread and process locking and signaling: 
     apr_proc_mutex.h, apr_thread_mutex.h, apr_thread_rwlock.h,
     apr_thread_cond.h, and apr_global_mutex.h.  [Aaron Bannert]

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  *) Change mod_status to use scoreboard accessor functions so it can
     be used in any MPM without having to be recompiled.
     [Ryan Morgan <rmorgan@covalent.net>]

  *) Fix parsing of some AP_DECLARE_DATA declarations so that the filter
     handle declarations are recognized.  This fixes problems loading 
     mod_autoindex on some platforms.  [Brian Havard]

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  *) add optional fixup hook to proxy [Daniel Lopez <daniel@covalent.net>]

  *) Remind the admin about the User and Group directives when we are
     unable to set permissions on a semaphore.  PR 7812  [Jeff Trawick]

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  *) fix possible compilation problem in ssl_engine_kernel.c. PR 7802
     [Doug MacEachern]

  *) fix possible infinite loop in mod_ssl triggered by certain
     netscape clients [Doug MacEachern]

  *) fix ProxyPass when frontend is https and backend is http
     [Doug MacEachern]

  *) Add DASL support to mod_dav
     [Sung Kim <hunkim@cse.ucsc.edu>]

  *) mod_rewrite: updated to use the new APR global mutex type.
     [Aaron Bannert]

  *) Fixes for mod_include errors on boundary conditions in which
     "<!--#" occurs at the very end of a bucket
     [Paul Reder, Brian Pane]

  *) worker, prefork, perchild, beos MPMs: Add -DFOREGROUND switch to 
     cause the Apache parent process to run in the foreground (similar to
     -DNO_DETACH except that it doesn't switch session ids).  
     [Jeff Trawick]
  *) Added support for Posix semaphore mutex locking (AcceptMutex posixsem)
     for those platforms that support it. If using the default
     implementation, this is between pthread and sysvsem in priority.
     This implies it's the new default for Darwin. [Jim Jagielski]

  *) AIX: Fix the syntax for setting the LDR_CNTRL and AIXTHREAD_SCOPE
     environment variables in the envvars file.  [Jeff Trawick]

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  *) worker MPM: Don't create a listener thread until we have a worker
     thread.  Otherwise, in situations where we'll have to wait a while
     to take over scoreboard slots from a previous generation, we'll be
     accepting connections we can't process yet.  [Jeff Trawick]

  *) Allow worker MPM to build on systems without pthread_kill().
     [Pier Fumagalli, Jeff Trawick]

  *) Prevent ap_add_output_filters_by_type from being called in
     ap_set_content_type if the content-type hasn't changed.
     [Justin Erenkrantz]

  *) Performance: implemented the bucket allocator made possible by the
     API change in 2.0.34.  [Cliff Woolley]

  *) Don't allow initialization to succeed if we can't get a socket
     corresponding to one of the Listen statements.  [Jeff Trawick]

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Changes with Apache 2.0.34
Ryan Bloom's avatar
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  *) Allow all Perchild directives to accept either numerical UID/GID
     or logical user/group names.  [Scott Lamb <slamb@slamb.org>]

  *) Make Perchild compile cleanly and serve pages again. [Ryan Bloom]

  *) implement ssl proxy to support ProxyPass / https:// and the
     SSLProxy* directives [Doug MacEachern]

  *) Update mod_cgid to not do single-byte socket reads for CGI headers
     [Brian Pane]

  *) Made AB's use of the Host: header rfc2616 compliant
     by Taisuke Yamada <tai@iij.ad.jp> [Dirk-Willem van Gulik].

  *) The old, legacy (and unused) code in which the scoreboard was totally
     and completely contained in a file (SCOREBOARD_FILE) has been
     removed. This does not affect scoreboards which are *mapped* to
     files using named-shared-memory. [Jim Jagielski]

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  *) Change bucket brigades API to allow a "bucket allocator" to be
     passed in at certain points.  This allows us to implement freelists
     so that we can stop using malloc/free so frequently.
     [Cliff Woolley, Brian Pane]

  *) Add support for macro expansion within the variable names in
     <!--#echo--> and <!--#set--> directives [Brian Pane]

  *) Fix some mod_include segfaults [Cliff Woolley, Brian Pane, Brad Nicholes]

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  *) Update the "RedHat" Layout to match Red Hat Linux version 7. PR BZ-7422
     [Joe Orton] 

  *) add compat layer to support RSA SSLC 1.x and 2.x in mod_ssl
     [Jon Travis, John Barbee, William Rowe, Ryan Bloom, Doug MacEachern]

  *) Add a new parameter to the quick_handler hook to instruct
     quick handlers to optionally do a lookup rather than actually 
     serve content. This is the first of several changes required fix
     several problems with how quick handlers work with subrequests.
     [Bill Stoddard]
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  *) worker MPM: Get MaxRequestsPerChild to work again.  [Jeff Trawick]

  *) [APR-related] The ordering of the default accept mutex method has
     been changed to better match what's done in Apache 1.3. The ordering 
     is now (highest to lowest): pthread -> sysvsem -> fcntl -> flock.
     [Jim Jagielski]
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  *) Ensure that the build/ directory is created when using VPATH.
     [Justin Erenkrantz]

  *) Add some popular types to the mime magic file.  PR 7730.
     [Linus Walleij <triad@df.lth.se>, Justin Erenkrantz]

  *) Remove the single-byte socket reads for CGI headers [Brian Pane]

  *) When a proxied site was being served, Apache was replacing
     the original site Server header with it's own, which is not
     allowed by RFC2616. Fixed. [Graham Leggett]

  *) Fix a mod_cgid problem that left daemon processes stranded
     in some server restart scenarios.  [Jeff Trawick]

  *) Added exp_foo and rel_foo variables to config_vars.mk for
     all Apache and Autoconf path variables (like --sysconfdir,
     --sbindir, etc). exp_foo is the "expanded" version, which means
     that all internal variable references have been interpolated.
     rel_foo is the same as $exp_foo, only relative to $prefix if they
     share a common path.  [Aaron Bannert]

  *) Fix some restart/terminate problems in the worker MPM.  Don't
     drop connections during graceful restart.  [Jeff Trawick]

  *) Change the header merging behaviour in proxy, as some headers
     (like Set-Cookie) cannot be unmerged due to stray commas in
     dates. [Graham Leggett]

  *) Be more vocal about what AcceptMutex values we allow, to make
     us closer to how 1.3 does it. [Jim Jagielski]

  *) Get nph- CGI scripts working again.  PRs 8902, 8907, 9983
     [Jeff Trawick]

  *) Upgraded PCRE library to latest version 3.9 [Brian Pane]

  *) Add accessor function to set r->content_type. From now on,
     ap_rset_content_type() should be used to set r->content_type.
     This change is required to properly implement the 
     AddOutputFilterByType configuration directive.
     [Bill Stoddard, Sander Striker, Ryan Bloom]
  *) Add new M_FOO symbols for the WebDAV/DeltaV methods specified by
     RFC 3253. Improved the method name/number mapping functions.
     [Greg Stein]

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  *) remove sock_enable_linger from connection.c [Ian Holsman]

  *) Fix for virtual host processing where the requested hostname
     has a '.' at the end (PR 9187) [Ryan Cruse <ryan@estara.com>]

  *) mod_dav's APIs for REPORT response handling was changed so that
     providers can generate the content directly into the output filter
     stack, rather than buffering the response into memory. [Greg Stein]

  *) Fix a hang condition with graceful restart and prefork MPM
     in the situation where MaxClients is very high but
     much fewer servers are actually started at the time of the
     restart.  [Jeff Trawick]

  *) Small performance fixes for mod_include [Brian Pane]

  *) Performance improvement for the error logger [Brian Pane]

  *) Change configure so that Solaris 8 and above have 
     SINGLE_LISTEN_UNSERIALIZED_ACCEPT defined by default.
     according to sun people solaris 8+ doesn't have a thundering
     herd problem [Ian Holsman]

  *) Allow URIs specifying CGI scripts to include '/' at the end
     (e.g., /cgi-bin/printenv/) on AIX and Solaris (and other OSs
     which ignore '/' at the end of the names of non-directories).
     PR 10138  [Jeff Trawick]

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  *) implement SSLSessionCache shmht and shmcb based on apr_rmm and
     apr_shm.  [Madhusudan Mathihalli <madhusudan_mathihalli@hp.com>]

Jeff Trawick's avatar
Jeff Trawick committed
  *) Fix apxs -g handling.  Move config_vars.mk from the top build
     directory to the build directory.  PR 10163  [Jeff Trawick]

  *) Fix some mod_include problems which broke evaluation of some
     expressions.  PR 10108  [Jeff Trawick]

  *) Fix the calculation of request time in mod_status.  [Stas Bekman]

  *) Fix the calculation of thread_num in the worker score structure.
     [Stas Bekman]

  *) Use apr_atomic operations in managing the mod_mem_cache
     cache_objects for SMP scalability. (see USE_ATOMICS
     preprocessor directive in mod_file_cache)
     [Bill Stoddard]

  *) Add filehandle caching to mod_mem_cache. (see CACHE_FD
     preprocessor directive in mod_file_cache)
     [Bill Stoddard]

  *) Implement prototype mod_disk_cache for use with mod_cache.
     [Bill Stoddard]
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  *) Add a missing manualdir entry in the Debian config.layout.
     [Thom May <thom@planetarytramp.net>]

  *) Stop installing libtool for APR and tell APR where it should place
     its copy of libtool (via our installbuildpath layout variable).
     [Justin Erenkrantz]

  *) New directive ProxyIOBufferSize. Sets the size of the buffer used
     when reading from a remote HTTP server in proxy. [Graham Leggett]

  *) Modify receive/send loop in proxy_http and proxy_ftp so that
     should it be necessary, the remote server socket is closed before
     transmitting the last buffer (set by ProxyIOBufferSize) to the
     client. This prevents the backend server from being forced to hang
     around while the last few bytes are transmitted to a slow client.
     Fix the case where no error checking was performed on the final
     brigade in the loop. [Graham Leggett]

  *) Scrap CacheMaxExpireMin and CacheDefaultExpireMin. Change
     CacheMaxExpire and CacheDefaultExpire to use seconds rather than
     hours. [Graham Leggett, Bill Stoddard]

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  *) New Directive SSIUndefinedEcho. to change the '(none)' echoed
     for a undefined variable. [Ian Holsman]

  *) Proxy HTTP and CONNECT: Keep trying other addresses from the DNS
     when we can't get a socket in the specified address family.  We may
     have gotten back an IPv6 address first and yet our system is not
     configured to allow IPv6 sockets.  [Jeff Trawick]

  *) Be more careful about recursively removing CVS directories. Make
     sure that we aren't cd'ing to their home directory first. PR: 9993
     [Aaron Bannert, James LewisMoss <dres@lewismoss.net>]
  *) Add a missing errordir entry in the Debian config.layout. PR: 10067
     [Dirk-Jan Faber <dirk-jan@selwerd.nl>, Aaron Bannert,
      Thom May <thom@planetarytramp.net>]

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  *) Rename the filter ordering priorities.  The recent filtering fixes
     have showcased problems with their usage.  Therefore, we need to
     rename them to increase the clarity.  (CONTENT->RESOURCE,
     HTTP_HEADER->CONTENT_SET/PROTOCOL)  [Justin Erenkrantz]

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Changes with Apache 2.0.33
  *) Fix a problem in the new --enable-layout functionality where
     it wouldn't allow overrides from variables like --prefix,
     --bindir, etc.  [Thom May <thom@planetarytramp.net>]

  *) Fix a bug in the core input filter for AP_MODE_EXHAUSTIVE. It
     no longer hangs around waiting for the socket to close before
     returning exhaustive data.  [Aaron Bannert]

  *) rename apr_exploded_time_t to apr_time_exp_t (as per renames pending)
     [Thom May <thom@planetarytramp.net>]

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  *) Change mod_ssl to always do a full startup/teardown on restarts.
     this allows mod_ssl to be added to a server that is already
     running and makes it possible to add/change certs/keys after the
     server has been started.  [Doug MacEachern]

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  *) Introduce PassPhraseDialog "|/path/to/pipe" mechanism to mod_ssl.
     This pipe must be a bidirectional 'console' style relay, which
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     mod_ssl prints all prompts to the pipe's stdin, and reads the
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     passphrases from the pipe's stdout.  [William Rowe]

  *) Fix bug where --sysconfdir and --localstatedir were being
     ignored.  [Thom May <thom@planetarytramp.net>, Aaron Bannert]
     PR 9888

  *) Fix --enable-layout to work again. Caution: When specifying
     --enable-layout, common arguments like --prefix, --exec-prefix,
     etc. will be ignored and the settings from the layout will be
     used instead.  [Thom May <thom@planetarytramp.net>, Aaron Bannert]
     PR 9124, 9873, 9885

  *) New Directive for mod_proxy: ProxyRemoteMatch. This provides
     regex pattern matching for the determination of which requests
     to use the remote proxy for. [Jim Jagielski]

  *) Fix CustomLog bytes-sent with HTTP 0.9.  [Justin Erenkrantz]

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  *) Prevent Apache from ignoring SIGHUP due to some lingering 1.3
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     cruft in piped logs and rewritemap child processes.
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     [William Rowe]

  *) All instances of apr_lock_t have been removed and converted
     to one of the following new lock APIs: apr_thread_mutex.h,
     apr_proc_mutex.h, or apr_global_mutex.h. No new code should
     use the apr_lock.h API, as the old API will soon be deprecated.
     [Aaron Bannert]

  *) Merged in changes to mod_ssl up through 2.8.7-1.3.23.