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Changes with Apache 2.0.20
  *) Fix problem in content-length filter where the filter would
     buffer all the output from a CGI before sending any bytes
     down the filter stack to the network. This problem would cause
     significant memory consumption if the CGIs generated
     lots of bytes. [Bill Stoddard]
  
  *) Get non-blocking CGI pipe reads working with the bucket brigades.
     [Bill Stoddard]

  *) Fix seg fault on Windows when serving files cached with mod_file_cache.
     [Bill Stoddard]

  *) Fix a bug in the threaded MPM that would cause it to kill off all
     workers immediately after starting if the number of workers started
     was above a certain threshold. [Ryan Bloom, Bill Stoddard]

Changes with Apache 2.0.19

  *) Fix problem with threaded MPM. The problem was that if each child
     process was busy serving a single long-lived request and the server
     was sent a graceful restart signal, the server would stop serving
     requests. This would happen because each child process would wait to
     die until the last thread was done, and the parent wouldn't spawn any
     new children until a process died. Now, the parent looks at the fact
     that the children are dying gracefully, and starts new children.
     Those new children only start enough threads to compliment the number
     of threads in the other child process that shares the same spot in
     the scoreboard. In this way, we make sure to never go over
     MaxClients. [Ryan Bloom]

  *) modified mod_negotiation and mod_autoindex to speed up by almost a
     factor of two on apr_dir_read()-enhanced platforms, such as Win32
     and OS2, by calling ap_sub_request_lookup_dirent() with the results
     already provided by apr_dir_read(). [William Rowe]

  *) mod_file_cache is now more robust to filtering and serves requests
     slightly more efficiently. [Cliff Woolley]

  *) Fix problem handling FLUSH bucket in the chunked encoding filter.
     Module was calling ap_rwrite() followed by ap_rflush() but the
     served content was not being displayed in the browser. Inspection
     of the output stream revealed that the first data chunk was
     missing the trailing CRLF required by the RFC. [Bill Stoddard]

  *) apxs no longer generates ap_send_http_header() in the example handler

  *) Fix an ab problem which could cause a divide-by-zero exception
     with certain invocations (e.g., ab -k -c 6 -n 100 localhost/).
     [Ian Holsman <ianh@cnet.com>]

  *) Solve case-insensitive platforms' confusion about negotiated
     filenames, allowing files of differnt case to match in choosing
     the document to serve. [William Rowe]

  *) Fix brokenness when ThreadsPerChild is higher than the built-in
     limit. We left ap_threads_per_child at the higher value which
     led to segfaults when doing certain scoreboard operations.
     [Jeff Trawick]

  *) Fix seg faults and/or missing output from mod_include. The
     default_handler was using the subrequest pool for files and
     MMAPs, even though the associated APR structures typically
     live longer than the subrequest. [Greg Ames]
  
  *) Extend mod_setenvif to support specifying regular expressions
     on the SetEnvIf (and SetEnvIfNoCase) directive attribute field.
     Example: SetEnvIf ^TS* [a-z].* HAVE_TS
     will cause HAVE_TS to be set if any of the request headers begins
     with "TS" and has a value that begins with any character in the
     set [a-z]. [Bill Stoddard]

  *) httpd children now re-bind themselves to a random CPU on
     multiprocessor systems on AIX via bindprocessor() in 2.0.
     [Victor J. Orlikowski]

  *) Fix htdigest. It would go into a loop in getline when adding
     a second user. [Bill Stoddard]

  *) Win32 platforms now fully support mod_userdir options. [Will Rowe]

  *) Automatically generate httpd.exp for AIX.
     DSOs now work again on AIX in 2.0
     [Victor J. Orlikowski]

  *) Add a new request hook, error_log. This phase allows modules
     to act on the error log string _after_ it has been written
     to the error log. The goal for this hook is to allow monitoring
     modules to send the error string to the monitoring agent.
     [Ryan Bloom]

  *) Modify mod_echo to make it use filters for input and output.
     [Ryan Morgan <rmorgan@covalent.net>]

  *) Extend mod_headers to support conditional driven Header
     add, append and set. Use SetEnvIf to set an envar and conditionally
     add/append/set headers based on this envar thusly:

     SetEnvIf TSMyHeader value HAVE_TSMyHeader
     Header add MyHeader "%t %D" env=HAVE_TSMyHeader

     If the request contains header "TSMyHeader: value" then header
     MyHeader: "t=xxxxxxxxxx D=yyyy" will be sent on the response.
     [Bill Stoddard]

  *) Extend mod_headers to support using format specifiers on Header
     add, append and set header values. Two format specifiers are supported:

     %t - reports, in UTC microseconds since the epoch, when the
          request was received.

     %D - reports the time, in microseconds, between when the request was
          received and the response sent.

     Examples:
     Header add MyHeader "This request served in %D microseconds. %t"

     results in a header being added to the response that looks like this:
     
     MyHeader: This request served in D=5438 microseconds. t=991424704447256

     [Bill Stoddard]

  *) Fix reset_filter(). We need to be careful how we remove filters.
     If we set r->output_filters to NULL, we also have to reset the
     connection's filters. [John Sterling]

  *) Optimise reset_filter() in http_protocol.c. [Greg Stein]

  *) Add a check to ap_die() to make sure the filter stack is sane and
     contains the correct basic filters when an error occurs. This fixes
     a problem where headers are not being sent on error. [John Sterling]

  *) New Header directive 'echo' option. "Header echo regex" will
     cause any headers received on the request that match regex to be
     echoed to (included in) the response headers.
     [Bill Stoddard]

  *) include/ap_compat.h tested and set APR_COMPAT_H instead of AP_COMPAT_H.
     This prevented the inclusion of apr_compat.h. PR #7773
     [Oleg Broytmann <phd@phd.pp.ru>]

  *) Moved util_uri to the apr-util library. This required a bunch of
     apr_name changes for the uri utility functions. [Justin Erenkrantz]

  *) Move the addition of default AP_HTTP_HTTP_HEADER filters to the
     insert_filter phase so that other filters are not bypassed by default.
     [Graham Leggett]

  *) Reimplement mod_headers as an output filter. mod_headers can now
     add custom headers to inbound requests using the RequestHeader directive
     and to responses using the same old Header directive. [Graham Leggett]

Changes with Apache 2.0.18

  *) Fix command-line processing so that if a bad argument is specified
     Apache will exit. [Jeff Trawick]

  *) Change the make targets and rules to be consistent in all of the
     Apache-owned source trees. [Roy Fielding]
     
  *) Fix processing of the TRACE method. Previously we passed bogus
     parms to form_header_field() and it overlaid some vhost structures,
     resulting in a segfault in check_hostalias().
     [Greg Ames, Jeff Trawick]

  *) Win32: Add support for reliable piped logs. If the logging process
     goes down, Apache will automatically restart it. This function has
     been part of Apache on Unix/Linux/BSD since the early v1.3 releases.
     [Bill Stoddard]

  *) Do not start piped log processes during the config file
     preflight. This change also circumvents a problem on
     Windows where the rotatelog processes created during preflight
     was not getting cleaned up properly.
     [Bill Stoddard]

  *) add "Request Phase Participation" info to mod_info
     [Doug MacEachern]

  *) Make first phase changes to the scoreboard data structures in
     preparation for the rewriting of the scoreboard per my posted
     design notes. [Paul J. Reder]

  *) Fix httpd's definition of LTFLAGS to be consistent with that of apr
     and apr-util, allow it to be overridden by the configure command-line
     (default="--silent") and introduce LT_LDFLAGS to replace what we were
     formerly abusing as LTFLAGS. [Roy Fielding]

  *) Clean up the reporting of incorrect closing container tags.
     [Barrie Slaymaker <barries@slaysys.com>]

  *) Simplify the configure process by moving all libtool stuff to APR
     and moving hints.m4 inline. [Roy Fielding]

  *) Add the AP_DECLARE()/AP_CORE_DECLARE macros on the return types
     of functions used by mod_proxy for export in the DLL
     [Ian Holsman <IanH@cnet.com>]

  *) Prevent a hang when a cgi handled by mod_cgid tries to read a
     request body from its stdin but no reqest body is being written to
     the cgi. [Jeff Trawick]

  *) mod_log_config: %c connection status incorrectly logged
     as "-" (non-keepalive) when MaxKeepAliveRequests is set to 0.
     [Bill Stoddard]

  *) Get mod_cern_meta working under Windows
     [Bill Stoddard]

  *) Create Files, and thus MMAPs, out of the request pool, not the
     connection pool. This solves a small resource leak that had us
     not closing files until a connection was closed. In order to do
     this, at the end of the core_output_filter, we loop through the
     brigade and convert any data we have into a single HEAP bucket
     that we know will survive clearing the request_rec.
     [Ryan Bloom, Justin Erenkrantz <jerenkrantz@ebuilt.com>,
      Cliff Woolley]

  *) Completely revamp configure so that it preserves the standard make
     variables CPPFLAGS, CFLAGS, CXXFLAGS, LDFLAGS and LIBS by moving
     the configure additions to EXTRA_* variables. Also, allow the user
     to specify NOTEST_* values for all of the above, which eliminates the
     need for THREAD_CPPFLAGS, THREAD_CFLAGS, and OPTIM. Fix the setting
     of INCLUDES and EXTRA_INCLUDES. Check flags as they are added to
     avoid pointless duplications. Fix the order in which flags are given
     on the compile and link lines. Remove obsolete macros APR_DOEXTRA,
     AC_ADD_LIBRARY, AC_CHECK_DEFINE, APACHE_PASSTHRU, and APACHE_ONCE.
     Added APR_SAVE_THE_ENVIRONMENT and APR_RESTORE_THE_ENVIRONMENT macros.
     Renamed AC_TYPE_RLIM_T macro to APACHE_TYPE_RLIM_T. [Roy Fielding]

  *) Get mod_tls to compile/work better on Windows. PR #7612
     [Bernhard Schrenk <b.schrenk@improx.com>]

  *) Fix shutdown/restart hangs in the threaded MPM.
     [Jeff Trawick, Greg Ames, Ryan Bloom]
  
  *) Removed the keptalive boolean from conn_rec because it is now only
     used by a single routine and can be replaced by a local variable.
     [Greg Stein, Ryan Bloom, Roy Fielding]

  *) Patch prefork to put enough of the signal processing back in so that
     signals are all handled properly now. The previous patch fixed the
     deadlock race condition, but broke the user directed signal handling.
     This fixes it to work the way it did before my previous prefork patch
     (primarily, SIGTERM is now working).
 
  *) Change how input filters decide how much data is returned to the
     higher filter. We used to use a field in the conn_rec, with this
     change, we use an argument to ap_get_brigade to determine how much
     data is retrieved. [Ryan Bloom]

  *) Fix seg fault at start-up introduced by Ryan's change to enable
     modules to specify their own logging tags. mod_log_config
     registers an optional function, ap_register_log_handler().
     ap_register_log_handler() was being called by http_core before
     the directive hash table was created. This patch creates the
     directive hash table before ap_register_log_handler() is
     registered as an optional function.
     [jean-frederic clere <jfrederic.clere@fujitsu-siemens.com>]

  *) Add ap_set_int_slot() function
     [John K. Sterling <sterling@covalent.net>]

  *) Under certain circumstances, Apache did not supply the
     right response headers when requiring authentication.
     [Gertjan van Wingerde <Gertjan.van.Wingerde@cmg.nl>] PR#7114
     (This is a port of the change that went into Apache 1.3.19.)

  *) Allow modules to specify their own logging tags. This basically
     allows a module to tell mod_log_config that when %x is encountered
     a specific function should be called. Currently, x can be any single
     character. It may be more useful to make this a string at some point.
     [Ryan Bloom]

Changes with Apache 2.0.17

  *) If a higher-level filter handles the the byterange aspects of a
     request, then the byterange filter should not try to redo the
     work. The most common case of this happening, is a byterange
     request going through the proxy, and the origin server handles
     the byterange request. The proxy should ignore it.
     [Graham Leggett <minfrin@sharp.fm>]

  *) Changed the threaded mpm to have child_main join to each of the
     worker threads to make sure the kids are all gone before child_main
     exits after a signal (cleanup from perform_idle_server_maintenance).
     This is an extension of Ryans recent commit to make the child_main
     the signal thread.

  *) Add more options to the ap_mpm_query function. This also allows MPMs to
     report if their threads are dynamic or static. Finally, this also
     implements a new API, ap_show_mpm, which returns the MPM that was
     required into the core. [Harrie Hazewinkel <harrie@covalent.net>]

  *) Do not install the binaries from the support directory twice.
     [jun-ichiro hagino <itojun@iijlab.net>]

  *) The ap_f* functions should flush data to the filter that is passed
     in, not the the filter after the one passed in.
     [Ryan Morgan <rmorgan@covalent.net>]

  *) Make ab work again by changing its native types to apr types and formats.
     [Justin Erenkrantz <jerenkrantz@ebuilt.com>]

  *) Move the byterange filter and all of the supporting functions back
     to the HTTP module. The byterange filter turned out to be very
     HTTP specific, and it belongs in the HTTP module. [Greg Stein]

  *) Make clean, distclean, and extraclean consistently according to the
     Gnu makefile guidelines. [Justin Erenkrantz <jerenkrantz@ebuilt.com>]

  *) Fix errors in the renaming of the apr_threadattr_detach_xxx functions.
     This may have been causing problems stopping processes in the threaded
     mpm's. [Greg Ames]

  *) Fix content-length in mod_negotiation to a long int representation.
     [William Rowe]

  *) Remove BindAddress from the default config file.
     [giles@nemeton.com.au]

  *) Allow module authors to add a module to their Apache build using
     --with-module, without re-running buildconf. The syntax is:
--with-module=module_type:/path/to/module.c
     The configure script will copy the module.c file to
     modules/module_type, and it will be added to the relevant Makefiles.
     currently, this only works for static modules. [Ryan Bloom]

  *) Changes required to make prefork clean up idle children properly.
     There was a window during which a starting worker deadlocks when
     an idle cleanup arrives before it completes init. Apache then keeps
     trying to cleanup the same deadlocked worker forever (until higher
     pids come along, but it still will never reduce below the deadlocked
     pid). Thus the number of children would not reduce to the correct
     idle level. [Paul J. Reder]

Changes with Apache 2.0.16

  *) Change the default installation directory to /usr/local/apache2,
     as now defined by the "Apache" layout in config.layout. [Marc Slemko]

  *) OS/2: Added support for building loadable modules as OS/2 DLLs.
     [Brian Havard]

  *) Get MaxRequestsPerChild working with the Windows MPM.
     [Bill Stoddard]

  *) Make generic hooks to work, with mod_generic_hook_import/export
     experimental modules. [Ben Laurie, Will Rowe]

  *) Fix segfaults for configuration file syntax errors such as
     "<Directory>" followed by "</Directory" and
     "<Directory>" followed by "</Directoryz>". [Jeff Trawick]

  *) Cleanup the --enable-layout option of configure. This makes
     us use a consistent location for the config.layout file, and it
     makes configure more portable.
     [jun-ichiro hagino <itojun@iijlab.net>]

  *) Changes to 'ab'; fixed int overrun's, added statistics, output in
     csv/gnuplot format, rudimentary ssl support and various other tweaks
     to make results more true to what is measured. The upshot of this it
     turns out that 'ab' has often underreported the true performance of
     apache. Often by a order of magnitude :-) See talk/paper of Sander
     Temme <sctemme@covalent.net> at April ApacheCon 2001 for details.
     [Dirk-Willem van Gulik]

  *) Clean up mod_cgid's temporary request pool. Besides fixing a
     storage leak this ensures that some unnecessary pipes are closed.
     [Jeff Trawick]

  *) Performance: Add quick_handler hook. This hook is called at the
     very beginning of the request processing before location_walk,
     translate_name, etc. This hook is useful for URI keyed content
     caches like Mike Abbott's Quick Shortcut Cache.
     [Bill Stoddard]

  *) top_module global variable renamed to ap_top_module [Perl]

  *) Move ap_set_last_modified to the core. This is a potentially
     controversial change, because this is kind of HTTP specific. However
     many protocols should be able to take advantage of this kind of
     information. I expect that headers will need one more layer of
     indirection for multi-protocol work, but this is a small step in
     the right direction. [Ryan Bloom]

  *) Enable mod_status by default. This matches what Apache 1.3 does.
     [Ed Korthof]

  *) Add a ScriptSock directive to the default config file. This is
     only enabled when mod_cgid is used.
     [Taketo Kabe <kabe@sra-tohoku.co.jp>]

Changes with Apache 2.0.15

  *) Untangled the buildconf script and eliminated the need for build's
     aclocal.m4, generated_lists, build.mk, build2.mk, and a host of other
     libtool muck that is now under srclib/apr/build. [Roy Fielding]

  *) Win32: Don't accept more connections than we have worker threads
     to handle.
     [Bill Stoddard]

  *) Fix bug in the Unix threaded.c MPM that allowed child processes
     to fork() new child processes.
     [Bill Stoddard]

  *) Fix a major security problem with double-reverse lookup checking.
     Previously, a client connecting over IPv4 would not be matched
     properly when the server had an IPv6 listening socket. PR #7407
     [Taketo Kabe <kiabe@sra-tohoku.co.jp>]

  *) Change the way the beos MPM handles polling to allow it to stop and
     restart. Problem was the sockets being polled were being reset by
     the select call, so once it had accepted a connection it was no
     longer listening on the UDP socket we use for shutdown instructions.
     APR needs to be altered, patch on it's way. [David Reid]

  *) Empty out the brigade shared by ap_getline()/ap_get_client_block()
     on error exit from ap_getline(). Some other code got upset because
     the wrong data was in the brigade. [Greg Ames, Jeff Trawick]

  *) Handle ap_discard_request_body() being called more than once.
     [Greg Ames, Jeff Trawick]

  *) Get rid of an inadvertent close of file descriptor 2 in
     mod_mime_magic. [Greg Ames, Jeff Trawick]

  *) Add a hook, create_request. This hook allows modules to modify
     a request while it is being created. This hook is called for all
     request_rec's, main request, sub request, and internal redirect.
     When this hook is called, the the r->main, r->prev, r->next
     pointers have been set, so modules can determine what kind of
     request this is. [Ryan Bloom]

  *) Cleanup the build process a bit more. The Apache configure
     script no longer creates its own helper scripts, it just
     uses APR's.
     [jean-frederic clere <jfrederic.clere@fujitsu-siemens.com>]

  *) Stop the forced downgrade of the connection to HTTP/1.0 for
     proxy requests. [Graham Leggett]

  *) Avoid using sscanf to determine the HTTP protocol number in
     the common case because sscanf is a performance hog. From
     Mike Abbot's Accelerating Apache patch number 6.
     [Mike Abbot <mja@trudge.engr.sgi.com>, Bill Stoddard]

  *) Fix a security exposure in mod_access. Previously when IPv6
     listening sockets were used, allow/deny-from-IPv4-address rules
     were not evaluated properly (PR #7407). Also, add the ability to
     specify IPv6 address strings with optional prefix length on Allow
     and Deny. [Jeff Trawick]

  *) Enhance rotatelogs so that a UTC offset can be specified, and
     the logfile name can be formatted using strftime(3). (Brought
     forward from 1.3.) [Ken Coar]

  *) Reimplement the Windows MPM (mpm_winnt.c) to eliminate calling
     DuplicateHandle on an IOCompletionPort (a practice which
     MS "discourages"). The new model does not rely on associating
     the completion port with the listening sockets, thus the
     completion port can be completely managed within the child
     process. A dedicated thread accepts connections off the network,
     then calls PostQueuedCompletionStatus() to wake up worker
     threads blocked on the completion port.
     [Bill Stoddard]

  *) Bring forward the --suexec-umask option which allows the
     builder to preset the umask for suexec processes. [Ken Coar]

  *) Add a -V flag to suexec, which causes it to display the
     compile-time settings with which it was built. (Only
     usable by root or the AP_HTTPD_USER username.) [Ken Coar]

  *) Mod_include should always unset the content-length if the file is
     going to be passed through send_parsed_content. There is no to
     determine if the content will change before actually scanning the
     entire content. It is far safer to just remove the C-L as long
     as we are scanning it. [Ryan Bloom]

  *) Make sure Apache sends WWW-Authenticate during a reverse proxy
     request and not Proxy-Authenticate.
     [Graham Leggett <minfrin@sharp.fm>]

Changes with Apache 2.0.14

  *) Fix content-length computation. We ONLY compute a content-length if
     We are not in a 1.1 request and we cannot chunk, and this is a keepalive
     or we already have all the data. [Ryan Bloom]

  *) Report unbounded containers in the config file. Previously, a typo
     in the </container> directive could result in the rest of the config
     file being silently ignored, with undesired defaults used.
     [Jeff Trawick]

  *) Make the old_write filter use the ap_f* functions for the buffering.
     [Ryan Bloom]

  *) Move more code from the http module into the core server. This
     is core code, basically the default handler, the default input
     and output filters, and all of the core configuration directives.
     All of this code is required in order for the server to work, with or
     without HTTP. The server is closer to working without the HTTP
     module, although there is still more to do. [Ryan Bloom]

  *) Fix a number of SGI compile warnings throughout the server. Fix some
     bad parameters to apr_bucket_read(). Fix a bad statement in
     ap_method_in_list(). For the mod_rewrite cache use apr_time_t
     consistently; we were mixing apr_time_t and time_t in invalid ways
     before. In load_file(), call apr_dso_error() instead of
     apr_strerror() so that we get a more specific string on some platforms.
     PR #6980 [Jeff Trawick]

  *) Allow modules to query the MPM about it's execution profile. This
     query API can and should be extended in the future, but for now,
     max_daemons, and threading or forking is a very good start.
     [Jon Travis <jtravis@covalent.net>]

  *) Modify mod_include to send blocks of data no larger than 9k.
     Without this, mod_include will wait until the whole file is parsed,
     or the first tag is found to send any data to the client.
     [Paul J. Reder <rederpj@raleigh.ibm.com>]

  *) Fix mod_info, so that <Directory> and <Location> directives are
     not displayed twice when displaying the current configuration.
     [Ryan Morgan <rmorgan@covalent.net>]

  *) Add config directives to override DEFAULT_ERROR_MSG and
     DEFAULT_TIME_FORMAT. This was sent in as PR 6193.
     [Dan Rench <drench@xnet.com>]

  *) Get mod_info building and loading on Win32. [William Rowe]

  *) Begin to move protocol independant functions out of mod_http. The goal
     is to have only functions that are HTTP specific in the http directory.
     [Ryan Bloom]

Changes with Apache 2.0.13

  *) Don't assume that there will always be multiple calls to the byterange
     filter. It is possible that we will need to do byteranges with only
     one call to the filter. [Ryan Morgan <rmorgan@covalent.net>]

  *) Move the error_bucket definition from the http module to the
     core server. Every protocol will need this ability, not just
     HTTP. [Ryan Bloom]

Changes with Apache 2.0.12

  *) Modify mod_file_cache to save pre-formatted strings for
     content-length and last-modified headers for performance.
     [Mike Abbot <mja@trudge.engr.sgi.com>]

  *) Namespace protect IOBUFSIZ since it is exposed in the API.
     [Jon Travis <jtravis@covalent.net>]

  *) Use "Basic" authentication instead of "basic" in ab, as the spec
     says we should. [Andre Breiler <andre.breiler@rd.bbc.co.uk>]

  *) Fix a seg fault in mod_userdir.c. We used to use the pw structure
     without ever filling it out. This fixes PR 7271.
     [Taketo Kabe <kabe@sra-tohoku.co.jp> and
      Cliff Woolley <cliffwoolley@yahoo.com>]

  *) Add a couple of GCC attribute tags to printf style functions.
     [Jon Travis <jtravis@covalent.net>]

  *) Add the correct language tag for interoperation with the Taiwanese
     versions of MSIE and Netscape. [Clive Lin <clive@CirX.ORG>] PR#7142

  *) Migrate the perchild MPM to use the new apr signal child, and
     APR thread functions. [Ryan Bloom]

  *) Close one copy of the CGI's stdout before creating the new process.
     The CGI will still have stdout, because we have already dup'ed it.
     This keeps Apache from waiting forever to send the results of a CGI
     process that has forked a long-lived child process.
     [Taketo Kabe <kabe@sra-tohoku.co.jp>]

  *) Remove the rest of the pthreads functions from the threaded MPM.
     This requires the APR support for a signal thread that was just
     added. [Ryan Bloom]

  *) Make mod_dir use a fixup for sending a redirect to the browser.
     Before this, we were using a handler, which doesn't make much
     sense, because the handler wasn't generating any data, it would
     either return a redirect error code, or DECLINED. This fits the
     current hooks better. [Ryan Morgan <rmorgan@covalent.net>]

  *) Make the threaded MPM use APR threads instead of pthreads.
     [Ryan Bloom]

  *) Get mod_tls to the point where it actually appears to work in all cases.
     [Ben Laurie]

  *) implement --enable-modules and --enable-mods-shared for "all" and
     "most". [Greg Stein]

  *) Move the threaded MPM to use APR locks instead of pthread locks.
     [Ryan Bloom]

  *) Rename mpmt_pthread to threaded. This is more in line with the
     fact that mpmt_pthread shouldn't be using pthreads directly, and
     it is a smaller name that doesn't tie into anything.
     [Ryan Bloom]

  *) Rename the module structures so that the exported symbol matches
     the file name, and it is easier to automate the installation
     process (generating LoadModule directives from the module filenames).
     [Martin Kraemer]

  *) Remove the coalesce filter. With the ap_f* functions, this filter
     is no longer needed. [Ryan Bloom]

Changes with Apache 2.0.11

  *) Remove the dexter MPM. Perchild is the same basic idea, but it has the
     added feature of allowing a uid/gid per child process. If no
     uid/gid is specified, then Perchild behaves exactly like dexter.
     [Ryan Bloom]

  *) Get perchild building again. [Ryan Bloom]

  *) Don't disable threads just because we are using the prefork MPM.
     If somebody wants to compile without threads, they must now add
     --disable-threads to the configure command line. [Ryan Bloom]

  *) Begin to move the calls to update_child_status into common code, so
     that each individual MPM does not need to update the scoreboard itself.
     [Ryan Bloom]

  *) Allow mod_tls to compile under Unix boxes where openssl has been
     installed to the system include files.
     [Gomez Henri <new-httpd@slib.fr>]

  *) Cleanup the mod_tls configure process. This should remove any need
     to hand-edit any files. We require OpenSSL 0.9.6 or later, but
     configure doesn't check that yet. [Ryan Bloom]

  *) Add a very early prototype of SSL support (in mod_tls.c). It is
     vital that you read modules/tls/README before attempting to build
     it. [Ben Laurie]

  *) Fix a potential seg fault on all platforms. David Reid fixed this
     on BEOS, but the problem could happen anywhere, so we don't want
     to #ifdef it. [Cliff Woolley <cliffwoolley@yahoo.com>]
 
  *) Add new LogFormat directive, %D, to log time it takes to serve a
     request in microseconds. [Bill Stoddard]

  *) Change AddInputFilter and AddOutputFilter to SetInputFilter and
     SetOutputFilter. This corresponds nicely with the other Set
     directives, which operate on containers while the Add* directives
     tend to work directly on extensions. [Ryan Bloom]

  *) Cleanup the header handling a bit. This uses the apr_brigade_*
     functions for the buffering so that we don't need to compute
     the length of the headers before we actually create the header
     buffer. [Ryan Bloom]

  *) Allow filters to buffer data using the ap_f* functions. These have
     become macros that resolve directly to apr_brigade_*.
     [Ryan Bloom]

  *) Get the Unix MPM's to do a graceful restart again. If we are going
     to register a cleanup with ap_cleanup_scoreboard, then we have to
     kill the cleanup with the same function, and that function can't be
     static. [Ryan Bloom]

  *) Install all required header files. Without these, it was not
     possible to compile some modules outside of the server.
     [Ryan Bloom]

  *) Fix the AliasMatch directive in Apache 2.0. When we brought a patch
     forward from 1.3 to 2.0, we missed a single line, which broke regex
     aliases. [Ryan Bloom]

  *) We have a poor abstraction in the protocol. This is a temporary
     hack to fix the bug, but it will need to be fixed for real. If
     we find an error while sending out a custom error response, we back
     up to the first non-OK request and send the data. Then, when we send
     the EOS from finalize_request_protocol, we go to the last request,
     to ensure that we aren't sending an EOS to a request that has already
     received one. Because the data is sent on a different request than
     the EOS, the error text never gets sent down the filter stack. This
     fixes the problem by finding the last request, and sending the data
     with that request. [Ryan Bloom]

  *) Make the server status page show the correct restart time, and
     thus the proper uptime. [Ryan Bloom]

  *) Move the CGI creation logic from mod_include to mod_cgi(d). This
     should reduce the amount of duplicate code that is required to
     create CGI processes.
     [Paul J. Reder <rederpj@raleigh.ibm.com>]

  *) ap_new_connection() closes the socket and returns NULL if a socket
     call fails. Usually this is due to a connection which has been
     reset. [Jeff Trawick]

  *) Move the Apache version information out of httpd.h and into release.h.
     This is in preparation for the first tag with the new tag and release
     system. [Ryan Bloom]

  *) Begin restructuring scoreboard code to enable adding back in
     the ability to use IPC other than shared memory.
     Get mod_status working on Windows again. [Bill Stoddard]

  *) Make mod_status work with 2.0. This will work for prefork,
     mpmt_pthread, and dexter. [Ryan Bloom]

  *) Correct a typo in httpd.conf.
     [Kunihiro Tanaka <tanaka@apache.or.jp>] PR#7154

  *) Really fix mod_rewrite map lookups this time. [Tony Finch]

  *) Get the correct IP address if ServerName isn't set and we can't
     find a fully-qualified domain name at startup.
     PR#7170 [Danek Duvall <dduvall@eng.sun.com>]

  *) Make mod_cgid work with SuExec. [Ryan Bloom]

  *) Adopt apr user/group name features for mod_rewrite. Eliminates some
     'extra' stat's for user/group since they should never occur, and now
     resolves the SCRIPT_USER and SCRIPT_GROUP, including on WinNT NTFS
     volumes. [William Rowe]

  *) Adopt apr features to simplify mod_includes. This changes the
     behavior of the USER_NAME variable, unknown uid's are now reported
     as USER_NAME="<unknown>" rather than the old user#000 result.
     WinNT now resolves USER_NAME on NTFS volumes. [William Rowe]

  *) Adopt apr features for simplifing mod_userdir, and accept the new
     Win32/OS2 exceptions without hiccuping. [William Rowe]

  *) Replace configure --with-optim option by using and saving the
     environment variable OPTIM instead. This is needed because configure
     options do not support multiple flags separated by spaces.
     [Roy Fielding]

  *) Fix some byterange handling. If we get a byte range that looks like
     "-999999" where that is past the end of the file, we should return
     a PARTIAL CONTENT status code, and return the whole file as one big
     byterange. This matches the 1.3 handling now. [Ryan Bloom]

  *) Make the error bucket a real meta-data bucket. This means that the
     bucket length is 0, and a read returns NULL data. If one of these
     buckets is passed down after the headers are sent, this data will
     just be ignored. [Greg Stein]

  *) The prefork MPM wasn't killing child processes correctly if a restart
     signal was received while the process was serving a request. The child
     process would become the equivalent of a second parent process. If
     we break out of the accept loop, then we need to do die after cleaning
     up after ourselves. [Ryan Bloom]

  *) Change the Prefork MPM to use SIGWINCH instead of SIGUSR1 for graceful
     restarts. [Ryan Bloom]

  *) Modify the apr_stat/lstat/getfileinfo calls within apache to use
     the most optimal APR_FINFO_wanted bits. This spares Win32 from
     performing very expensive owner, group and permission lookups
     and allows the server to function until these apr_finfo_t fields
     are implemented under Win32. [William Rowe]

  *) Support for typedsafe optional functions - that is functions exported by
     optional modules, which, therefore, may or may not be present, depending
     on configuration. See the experimental modules mod_optional_fn_{ex,im}port
     for sample code. [Ben Laurie]

  *) filters can now report an HTTP error to the server. This is done
     by sending a brigade where the first bucket is an error_bucket.
     This bucket is a simple bucket that stores an HTTP error and
     a string. Currently the string is not used, but it may be needed
     to output an error log. The http_header_filter will find this
     bucket, and output the error text, and then return
     AP_FILTER_ERROR, which informs the server that the error web page
     has already been sent. [Ryan Bloom]

  *) If we get an error, then we should remove all filters except for
     those critical to serving a web page. This fixes a bug, where
     error pages were going through the byterange filter, even though
     that made no sense. [Ryan Bloom]

  *) Relax the syntax checking of Host: headers in order to support
     iDNS. PR#6635 [Tony Finch]

  *) Cleanup the byterange filter to use the apr_brigade_partition
     and apr_bucket_copy functions. This removes a lot of very messy
     code, and hopefully makes this filter more stable.
     [Ryan Bloom]

  *) Remove AddModule and ClearModuleList directives. Both of these
     directives were used to ensure that modules could be enabled
     in the correct order. That requirement is now gone, because
     we use hooks to ensure that modules are in the correct order.
     [Ryan Bloom]

  *) When SuExec is specified, we need to add it to the list of
     targets to be built. If we don't, then any changes to the
     configuration won't affect SuExec, unless 'make suexec' is
     specifically run. [Ryan Bloom]

  *) Cleaned out open_file from mod_file_cache, as apr now accepts
     the APR_XTHREAD argument to open a file for consumption by
     parallel threads on win32. [William Rowe]

  *) Correct a bug in determining when we follow symlinks. The code
     expected a stat -1 result, not an apr_status_t positive error.
     Also check if the APR_FINFO_USER fields are valid before we
     follow the link. [William Rowe]

  *) Move initgroupgs, ap_uname2id and ap_gname2id from util.c to
     mpm_common.c. These functions are only valid on some platforms,
     so they should not be in the main-line code. [Ryan Bloom]

  *) Remove ap_chdir_file(). This function is not thread-safe,
     and nobody is currently using it. [Ryan Bloom]

  *) Do not try to run make depend if there are no .c files in the
     current directory, doing so makes `make depend` fail.
     [Ryan Bloom]

   *) Update highperformance.conf to work with either prefork or
      pthreads mpms. [Greg Ames]

  *) Stop checking to see if this is a pipelined request if we know
     for a fact that it isn't. Basically, if r->connection->keepalive == 0.
     This keeps us from making an extra read call when serving a 1.0
     request. [Ryan Bloom and Greg Stein]

  *) Fix the handling of variable expansion look-ahead in mod_rewrite,
     i.e. syntax like %{LA-U:REMOTE_USER}, and also fix the parsing of
     more complicated nested RewriteMap lookups. PR#7087 [Tony Finch]

  *) Fix the RFC number mentioned when complaining about a missing
     Host: header. PR#7079 [Alexey Toptygin <alexeyt@wam.umd.edu>]

  *) Fix an endless loop in ab which occurred when ab was posting
     and the server dropped the connection unexpectedly.
     [Jeff Trawick]

  *) Fix a segfault while handling request bodies in ap_http_filter().
     This problem has been seen with mod_dav usage as well as with
     requests where the body was just being discarded. [Jeff Trawick]

  *) Some adjustment on the handling and automatic setting (via
     hints.m4) of various compilation flags (eg: CFLAGS). Also,
     add the capability to specify flags (NOTEST_CFLAGS and
     NOTEST_LDFLAGS) which are used to compile Apache, but
     not used during the configuration process. Useful for
     flags like "-Werror". [Jim Jagielski]

  *) Stop using environment variables to force debug mode or
     no detach. We now use the -D command line argument to
     specify the correct mode. -DONE_PROCESS and -DNO_DETACH.
     [Greg Stein, Ryan Bloom]

  *) Change handlers to use hooks. [Ben Laurie]

  *) Stop returning copies of filenames from both apr_file_t and
     apr_dir_t. We pstrdup the filenames that we store in the
     actual structures, so we don't need to pstrdup the strings again.
     [Ryan Bloom]

  *) mod_cgi: Fix some problems where the wrong error value was being
     traced. [Jeff Trawick]

  *) EBCDIC: Fix some missing ASCII conversion on some protocol data.
     [Jeff Trawick]

  *) Add generic hooks. [Ben Laurie]

  *) Use a real pool to dup the error log descriptor. [Ryan Bloom]

  *) Fix a segfault caused by mod_ext_filter when the external filter
     program does not exist. [Jeff Trawick]

  *) Fix an output truncation error when on an HTTP >= 1.0 request an
     object of size between DEFAULT_BUCKET_SIZE and AP_MIN_BYTES_TO_WRITE
     was served through mod_charset_lite (or anything else that would
     create a transient bucket in this size range). ap_bucket_make_heap()
     silently failed (fixed), transient_setaside() discovered it, but
     ap_save_brigade() ignored it (fixed). [Jeff Trawick]
     
  *) Ignore \r\n or \n when using PEEK mode for input filters. The problem
     is that some browsers send extra lines at the end of POST requests, and
     we don't want to delay sending data back to the user just because the
     browser isn't well behaved. [Ryan Bloom]

  *) Get SuEXEC working again. We can't send absolute paths to suExec
     because it refuses to execute those programs. SuEXEC also wasn't
     always recognizing configuration changes made using the autoconf
     setup. [Ryan Bloom]

  *) Allow the buildconf process to find the config.m4 files in the correct
     order. Basically, we can now name config.m4 files as config\d\d.m4,
     and we will sort them correctly when inserting them into the build
     process. [Ryan Bloom]

  *) Get mod_cgid to use apr calls for creating the actual CGI process.
     This also allows mod_cgid to use ap_os_create_priviledged_process,
     thus allowing for SuExec execution from mod_cgid. Currently, we do
     not support everything that standard SuExec supports, but at least
     it works minimally now. [Ryan Bloom]

  *) Allow SuExec to be configured from the ./configure command line.
     [Ryan Bloom]

  *) Update some of the docs in README and INSTALL to reflect some of
     the changes in Apache 2.0 [Cliff Woolley <cliffwoolley@yahoo.com>]

  *) If we get EAGAIN returned from the call to apr_sendfile, then we
     need to call sendfile again. This gets us serving large files
     such as apache_2.0a9.tar.gz on FreeBSD again. [Ryan Bloom]

  *) Get the support programs building cleanly again.
     [Cliff Woolley <cliffwoolley@yahoo.com>]

  *) The Apache/Win32 Apache.exe and dll's now live in bin. The
     current directory logic now backs up over bin/ to determine the
     server root from the Apache.exe path.

  *) Apache/Win32 now follows the standard conventions of mod_foo.so
     loadable modules, dynamic libs are all named libfoo.dll, and the
     makefile.win populates the include, lib and libexec directories.

  *) Apache is now IPv6-capable. On systems where APR supports IPv6,
     Apache gets IPv6 listening sockets by default. Additionally, the
     Listen, NameVirtualHost, and <VirtualHost> directives support IPv6
     numeric address strings (e.g., "Listen [fe80::1]:8080").
     [Jeff Trawick]

  *) Modify the install directory layout. Modules are now installed in
     modules/. Shared libraries should be installed in libraries/, but
     we don't have any of those on Unix yet. All install directories
     are modifyable at configure time. [Ryan Bloom]

  *) Install all header files in the same directory on Unix. [Ryan Bloom]

  *) Get the functions in server/linked into the server, regardless of
     which modules linked into the server. This uses the same hack
     for Apache that we use for APR and apr-util to ensure all of the
     necessary functions are linked. As a part of thise, the CHARSET_EBCDIC
     was renamed to AP_CHARSET_EBCDIC for namespace protection, and to make
     the scripts a bit easier.
     [Ryan Bloom]

  *) Rework the RFC1413 handling to make it thread-safe, use a timeout
     on the query, and remove IPv4 dependencies. [Jeff Trawick]

  *) Get all of the auth modules to the point that they will install and
     be loadable into the server. Our new build/install mechanism expects
     that all modules will have a common name format. The auth modules
     didn't use that format, so we didn't install them properly.
     [Ryan Bloom]

  *) API routines ap_pgethostbyname() and ap_pduphostent() are no longer
     available. Use apr_getaddrinfo() instead. [Jeff Trawick]

  *) Get "NameVirtualHost *" working in 2.0. [Ryan Bloom]

  *) Return HTTP_RANGE_NOT_SATISFIABLE if the every range requested starts
     after the end of the response. [Ryan Bloom]

  *) Get byterange requests working with responses that do not have a
     content-length. Because of the way byterange requests work, we have to
     have all of the data before we can actually do the byterange, so we
     can compute the content-length in the byterange filter.
     [Ryan Bloom]

  *) Get exe CGI's working again on Windows.
     [Allan Edwards]

  *) Get mod_cgid and mod_rewrite to work as DSOs by changing the way
     they keep track of whether or not their post config hook has been
     called before. Instead of a static variable (which is replaced when
     the DSO is loaded a second time), use userdata in the process pool.
     [Jeff Trawick]

Changes with Apache 2.0a9

  *) Win32 now requires perl to complete the final install step for users
     to build + install on Win32. Makefile.win now rewrites @@ServerRoot@
     and installs the conf, htdocs and htdocs/manual directories.
     [William Rowe]

  *) Make mod_include use a hash table to associate directive tags with
     functions. This allows modules to implement their own SSI tags easily.
     The idea is simple enough, a module can insert it's own tag and function
     combination into a hash table provided by mod_include. While mod_include
     parses an SSI file, when it encounters a tag in the file, it does a
     hash lookup to find the function that implements that tag, and passes
     all of the relevant data to the function. That function is then
     responsible for processing the tag and handing the remaining data back
     to mod_include for further processing.
     [Paul J. Reder <rederpj@raleigh.ibm.com>]

  *) Get rid of ap_new_apr_connection(). ap_new_connection() now has
     fewer parameters: the local and remote socket addresses were removed
     from the parameter list because all required information is available
     via the APR socket. [Jeff Trawick]

  *) Distribution directory structure reorganized to reflect a
     normal source distribution with external install targets.
     [Roy Fielding]

  *) The MPMs that need multiple segments of shared memory now create
     two apr_shmem_t variables, one for each shared memory allocation.
     the problem is that we can't determine how much memory will be required
     for shared memory allocations once we try to allocate more than one
     variable. The MM code automatically aligns the shared memory allocations,
     so we end up needing to pad the amount of shared memory we want based
     on how many variables will be allocated out of the shared memory segment.
     It is just easier to create a second apr_shmem_t variable, and two
     shmem memory blocks.
     [Ryan Bloom]

  *) Cleanup the export list a bit. This creates a single unified list of
     functions exported by APR. The export list is generated at configure
     time, and that list is then used to generate the exports.c file.
     Because of the way the export list is generated, we only export those
     functions that are valid on the platform we are building on.
     [Ryan Bloom]

  *) Enable logging the cookie with mod_log_config
     [Sander van Zoest <sander@covalent.net>]

  *) Fix a segfault in mod_info when it reaches the end of the configuration.
     [Jeff Trawick]

  *) Added lib/aputil/ as a placeholder for utility functions which are not
     specific to the Apache HTTP Server (but do not make sense with APR).
     The first utility is "apu_dbm": a set of functions to work with DBM
     files. This first version can be compiled for SDBM or GDBM databases.
     [Greg Stein]

  *) Complete re-write of mod_include. This makes mod_include a filter that
     uses buckets directly. This has now served the FAQ correctly.
     [Paul Reder <rederpj@raleigh.ibm.com>]

  *) Allow modules to specify the first filter in a sub_request when
     making the sub_request. This keeps modules from having to change the
     output_filter immediately after creating the sub-request, and therefore
     skip the sub_req_output_filter. [Ryan Bloom]

  *) Update ab to accept URLs with IPv6 literal address strings (in the
     format described in RFC 2732), and to build Host header fields in
     the same format. This allows IPv6 literal address strings to be
     used with ab. This support has been tested against Apache 1.3 with
     the KAME patch, but Apache 2.0 does not yet work with this format
     of the Host header field. [Jeff Trawick]

  *) Accomodate an out-of-space condition in the piped logs and the
     rotatelogs.c code, and no longer churn log processes for this
     condition. [Victor J. Orlikowski]

  *) Add support for partial writes with apr_sendfile() to core_output_filter.
     [Greg Ames]

Changes with Apache 2.0a8

  *) Add a directive to mod_mime so that filters can be associated with
     a given mime-type.
     [Ryan Bloom]

  *) Get multi-views working again. We were setting the path_info
     field incorrectly if we couldn't find the specified file.
     [Ryan Bloom]

  *) Fix 304 processing. The core should never try to send the headers
     down the filter stack. Always, just setup the table in the request
     record, and let the header filter convert it to data that is ready
     for the network.
     [Ryan Bloom]

  *) More fixes for the proxy. There are still bugs in the proxy code,
     but this has now proxied www.yahoo.com and www.ntrnet.net (my ISP)
     successfully.
     [Ryan Bloom]

  *) Fix params for apr_getaddrinfo() call in connect proxy handler.
     [Chuck Murcko]

  *) APR: Add new apr_getopt_long function to handle long options.
     [B. W. Fitzpatrick <fitz@red-bean.com>]

  *) APR: Change apr_connect() to take apr_sockaddr_t instead of hostname.
     Add generic apr_create_socket(). Add apr_getaddrinfo() for doing
     hostname resolution/address string parsing and building
     apr_sockaddr_t. Add apr_get_sockaddr() for getting the address
     of one of the apr_sockaddr_t structures for a socket. Change
     apr_bind() to take apr_sockaddr_t. [David Reid and Jeff Trawick]

  *) Remove the BUFF from the HTTP proxy. This is still a bit ugly, but
     I have proxied pages with it, cleanup will commence soon.
     [Ryan Bloom]

  *) Make the proxy work with filters. This isn't perfect, because we
     aren't dealing with the headers properly. [Ryan Bloom]

  *) Do not send a content-length iff the C-L is 0 and this is a head
     request. [Ryan Bloom]

  *) Make cgi-bin work as a regular directory when using mod_vhost_alias
     with no VirtualScriptAlias directives. PR#6829 [Tony Finch]

  *) Remove BUFF from the PROXY connect handling. [Ryan Bloom]

  *) Get the default_handler to stop trying to deal with HEAD requests.
     The idea is to let the content-length filter compute the C-L before
     we try to send the data. If we can get the C-L correctly, then we
     should send it in the HEAD response.
     [Ryan Bloom]
     
  *) The Header filter can now determine if a body should be sent based
     on r->header_only. The general idea of this is that if we delay
     deciding to send the body, then we might be able to compute the
     content-length correctly, which will help caching proxies to cache
     our data better. Any handler that doesn't want to try to compute
     the content-length can just send an EOS bucket without data and
     everything will just work.
     [Ryan Bloom]

  *) Add the referer to the error log if one is available.
     [Markus Gyger <mgyger@itr.ch>]

  *) Mod_info.c has now been ported to Apache 2.0. As a part of this
     change, the root of the configuration tree has been exposed to modules
     as ap_conftree.
     [Ryan Morgan <rmorgan@covalent.net>]

  *) Get the core_output_filter to use the bucket interface directly.
     This keeps us from calling the content-length filter multiple times
     for a simple static request.
     [Ryan Bloom]

  *) We are sending the content-type correctly now.
     [Ryan Bloom and Will Rowe]

  *) APR on FreeBSD: Fix a bug in apr_sendfile() which caused us to report
     a bogus bytes-sent value when the only thing being sent was trailers
     and writev() returned an error (or EAGAIN). [Jeff Trawick]

  *) Get SINGLE_LISTEN_UNSERIALIZED_ACCEPT working again. This uses the
     hints file to determine which platforms define
     SINGLE_LISTEN_UNSERIALIZED_ACCEPT.
     [Ryan Bloom]

  *) APR: add apr_get_home_directory() [Jeff Trawick]

  *) Initial import of 1.3-current mod_proxy. [Chuck Murcko]

  *) Not all platforms have INADDR_NONE defined by default. Apache
     used to make this check and define INADDR_NONE if appropriate,
     but APR needs the check too, and I suspect other applications will
     as well. APR now defines APR_INADDR_NONE, which is always a valid
     value on all platforms.
     [Branko Èibej <brane@xbc.nu>]

  *) Destroy the pthread mutex in lock_intra_cleanup() for PR#6824.
     [Shuichi Kitaguchi <ki@hh.iij4u.or.jp>]

  *) Relax the syntax checking of Host: headers in order to support
     iDNS. PR#6635 [Tony Finch]

  *) When reading from file buckets we convert to an MMAP if it makes
     sense. This also simplifies the default handler because the
     default handler no longer needs to try to create MMAPs.
     [Ryan Bloom]

  *) BUFF has been removed from the main server. The BUFF code will remain
     in the code until it has been purged from the proxy module as well.
     [Ryan Bloom]

  *) Byteranges have been completely re-written to be a filter. This
     has been tested, and I believe it is working correctly, but it could
     doesn't work for the Adobe Acrobat plug-in. The output almost matches
     the output from 1.3, the only difference being that 1.3 includes
     a content-length in the response, and this does not.
     [Ryan Bloom]

  *) APR read/write functions and bucket read functions now operate
     on unsigned integers, instead of signed ones. It doesn't make
     any sense to use signed ints, because we return the error codes,
     so if we have an error we should report 0 bytes read or written.
     [Ryan Bloom]

  *) Always compute the content length, whether it is sent or not.
     The reason for this, is that it allows us to correctly report
     the bytes_sent when logging the request. This also simplifies
     content-length filter a bit, and fixes the actual byte-reporing
     code in mod_log_config.c
     [Ryan Bloom]

  *) Remove AP_END_OF_BRIGADE definition. This does not signify what
     it says, because it was only used by EOS and FLUSH buckets. Since
     neither of those are required at the end of a brigade, this was
     really signifying FLUSH_THE_DATA, but that can be determined better
     by checking AP_BUCKET_IS_EOS() or AP_BUCKET_IS_FLUSH. EOS and FLUSH
     buckets now return a length of 0, which is actually the amount of data
     read, so they make more sense.
     [Ryan Bloom]

  *) Allow the core_output_filter to save some data past the end of a
     request. If we get an EOS bucket, we only send the data if it
     makes sense to send it. This allows us to pipeline request
     responses. As a part of this, we also need to allocate mmap
     buckets out of the connection pool, not the request pool. This
     allows the mmap to outlive the request.
     [Ryan Bloom]

  *) Make blocking and non-blocking bucket reads work correctly for
     sockets and pipes. These are the only bucket types that should
     have non-blocking reads, because the other bucket types should
     ALWAYS be able to return something immediately.
     [Ryan Bloom]

  *) In the Apache/Win32 console window, accept Ctrl+C to stop the
     server, but use Ctrl+Break to initiate a graceful restart
     instead of duplicating behavior. [John Sterling]

  *) Patch mod_autoindex to set the Last-Modified header based on
     the directory's mtime, and add the ETag header. [William Rowe]

  *) Merge the 1.3 patch to add support for logging query string in
     such a way that "%m %U%q %H" is the same as "%r".
     [Bill Stoddard]

  *) Port three log methods from mod_log_config 1.3 to 2.0:
     CLF compliant '-' byte count, method and protocol.
     [Bill Stoddard]

  *) Add a new LogFormat directive, %c, that will log connection
     status at the end of the response as follows:
     'X' - connection aborted before the response completed.
     '+' - connection may be kept-alive by the server.
     '-' - connection will be closed by the server.
     [Bill Stoddard]

  *) Expand APR for WinNT to fully accept and return utf-8 encoded
     Unicode file names and paths for Win32, and tag the Content-Type
     from mod_autoindex to reflect that charset if the the feature
     macro APR_HAS_UNICODE_FS is true. [William Rowe]

  *) Compute the content length (and add appropriate header field) for
     the response when no content length is available and we can't use
     chunked encoding. [Jeff Trawick]

  *) Changed ap_discard_request_body() to use REQUEST_CHUNKED_DECHUNK,
     so that content input filters get dechunked data when using
     the default handler. Also removed REQUEST_CHUNKED_PASS.
     [Sascha Schumann]
     
  *) Add mod_ext_filter as an experimental module. This module allows
     the administrator to use external programs as filters. Currently,
     only filtering of output is supported. [Jeff Trawick]

  *) Most Apache functions work on EBCDIC machines again, as protocol
     data is now translated (again). [Jeff Trawick]

  *) Introduce ap_xlate_proto_{to|from}_ascii() to clean up some of
     the EBCDIC support. They are noops on ASCII machines, so this
     type of translation doesn't have to be surrounded by #ifdef
     CHARSET_EBCDIC. [Jeff Trawick]

  *) Fix mod_include. tag commands work again, and the server will
     send the FAQ again. This also allows mod_include to set aside
     buckets that include partial buckets.
     [Ryan Bloom and David Reid]

  *) Add suexec support back. [Manoj Kasichainula]

  *) Lingering close now uses the socket directly instead of using
     BUFF. This has been tested, but since all we can tell is that it
     doesn't fail, this needs to be really hacked on.
     [Ryan Bloom]

  *) Allow filters to modify headers and have those headers be sent to
     the client. The idea is that we have an http_header filter that
     actually sends the headers to the network. This removes the need
     for the BUFF to send headers.
     [Ryan Bloom]

  *) Charset translation: mod_charset_lite handles translation of
     request bodies. Get rid of the xlate version of ap_md5_digest()
     since we don't compute digests of filtered (e.g., translated)
     response bodies this way anymore. (Note that we don't do it at
     all at the present; somebody needs to write a filter to do so.)
     [Jeff Trawick]

  *) Input filters and ap_get_brigade() now have a input mode parameter
     (blocking, non-blocking, peek) instead of a length parameter.
     [hackathon]

  *) Update the mime.types file to the registered media types as
     of 2000-10-19. PR#6613 [Carsten Klapp <carsten.klapp@home.net>,
     Tony Finch]

  *) Namespace protect some macros declared in ap_config.h
     [Ryan Bloom]

  *) Support HTTP header line folding with input filtering.
     [Greg Ames]

  *) Mod_include works again. This should still be re-written, but at
     least now we can serve an SHTML page again.
     [Ryan Bloom]

  *) Begin to remove BUFF from the core. Currently, we keep a pointer
     to both the BUFF and the socket in the conn_rec. Functions that
     want to use the BUFF can, functions that want to use the socket,
     can. They point to the same place.
     [Ryan Bloom]

  *) apr_psprintf doesn't understand %lld as a format. Make it %ld.
     [Tomas "Ögren" <stric@ing.umu.se>]

  *) APR pipes on Unix and Win32 are now cleaned up automatically when the
     associated pool goes away. (APR pipes on OS/2 were already had this
     logic.) This resolvs a fatal file descriptor leak with CGIs.
     [Jeff Trawick]

  *) The final line of the config file was not being read if there was
     no \n at the end of it. This was caused by apr_fgets returning
     APR_EOF even though we had read valid data. This is solved by
     making cfg_getline check the buff that was returned from apr_fgets.
     If apr_fgets return APR_EOF, but there was data in the buf, then we
     return the buf, otherwise we return NULL.
     [Ryan Bloom]

  *) Piped logs work again in the 2.0 series.
     [Ryan Bloom]

  *) Restore functionality broken by the mod_rewrite security fix:
     rewrite map lookup keys and default values are now expanded
     so that the lookup can depend on the requested URI etc.
     PR #6671 [Tony Finch]

  *) Tighten up the syntax checking of Host: headers to fix a
     security bug in some mass virtual hosting configurations
     that can allow a remote attacker to retrieve some files
     on the system that should be inaccessible. [Tony Finch]

  *) Add a pool bucket type. This bucket is used for data allocated out
     of a pool. If the pool is cleaned before the bucket is destroyed, then
     the data is converted to a heap bucket, allowing it to survive the
     death of the pool.
     [Ryan Bloom]

  *) Add a flush bucket. This allows modules to signal that the filters
     should all flush whatever data they currently have. There is no way
     to actually force them to do this, so if a filter ignores this bucket,
     that's life, but at least we can try with this.
     [Ryan Bloom]

  *) Add an output filter for sub-requests. This filter just strips the
     EOS bucket so that we don't confuse the main request's core output
     filter by sending multiple EOS buckets. This change also makes sub
     requests start to send EOS buckets when they are finished.
     [Ryan Bloom]

  *) Make ap_bucket_(read|destroy|split|setaside) into macros. Also
     makes ap_bucket_destroy a return void, which is okay because it
     used to always return APR_SUCCESS, and nobody ever checked its
     return value anyway.
     [Cliff Woolley <cliffwoolley@yahoo.com>]

  *) Remove the index into the bucket-type table from the buckets
     structure. This has now been replaced with a pointer to the
     bucket_type. Also add some macros to test the bucket-type.
     [Ryan Bloom]

  *) Renamed all MODULE_EXPORT symbols to AP_MODULE_DECLARE and all symbols
     for CORE_EXPORT to AP_CORE_DECLARE (namespace protecting the wrapper)
     and retitled API_EXPORT as AP_DECLARE and APR_EXPORT as APR_DECLARE.
     All _VAR_ flavors changes to _DATA to be absolutely clear.
     [William Rowe]

  *) Add support for /, //, //servername and //server/sharename
     parsing of <Directory> blocks under Win32 and OS2.
     [Tim Costello, William Rowe, Brian Harvard]

  *) Remove the function pointers from the ap_bucket type. They have been
     replaced with a global table. Modules are allowed to register bucket
     types and use then use those buckets.
     [Ryan Bloom]

  *) mod_cgid: In the handler, shut down the Unix socket (only for write)
     once we finish writing the request body to the cgi child process;
     otherwise, the client doesn't hit EOF on stdin. Small request bodies
     worked without this change (for reasons I don't understand), but large
     ones didn't. [Jeff Trawick]

  *) Remove file bucket specific information from the ap_bucket type.
     This has been moved to a file_bucket specific type that hangs off
     the data pointer in the ap_bucket type.
     [Ryan Bloom]

  *) Input filtering now has a third argument. This is the amount of data
     to read from lower filters. This argument can be -1, 0, or a positive
     number. -1 means give me all the data you have, I'll deal with it and
     let you know if I need more. 0 means give me one line and one line
     only. A positive number means I want no more than this much data.

     Currently, only 0 and a positive number are implemented. This allows
     us to remove the remaining field from the conn_rec structure, which
     has also been done.
     [Ryan Bloom]
    
  *) Big cleanup of the input filtering. The goal is that http_filter
     understands two conditions, headers and body. It knows where it is
     based on c->remaining. If c->remaining is 0, then we are in headers,
     and http_filter returns a line at a time. If it is not 0, then we are
     in body, and http_filter returns raw data, but only up to c->remaining
     bytes. It can return less, but never more.
     [Greg Ames, Ryan Bloom, Jeff Trawick]

  *) mod_cgi: Write all of the request body to the child, not just what
     the kernel would accept on the first write. [Jeff Trawick]

  *) Back out the change that moved the brigade from the core_output_filters
     ctx to the conn_rec. Since all requests over a given connection
     go through the same core_output_filter, the ctx pointer has the
     correct lifetime.
     [Ryan Bloom]

  *) Fix another bug in the send_the_file() read/write loop. A partial
     send by apr_send would cause unsent data in the read buffer to
     get clobbered. Complete making send_the_file handle partial
     writes to the network.
     [Bill Stoddard]

  *) Fix a couple of type fixes to allow compilation on AIX again
     [Victor J. Orlikowski <v.j.orlikowski@gte.net>]

  *) Fix bug in send_the_file() which causes offset to be ignored
     if there are no headers to send.
     [Bill Stoddard]

  *) Handle APR_ENOTIMPL returned from apr_sendfile in the core
     filter. Useful for supporting Windows 9* with a binary
     compiled on Windows NT.
     [Bill Stoddard]

Changes with Apache 2.0a7

  *) Reimplement core_output_filter to buffer/save bucket brigades
     across multiple calls to the core_filter. The brigade will be
     sent when either MIN_BYTES_TO_SEND or MAX_IOVEC_TO_WRITE
     thresholds are hit or the EOS bucket is received.
     [Bill Stoddard]

  *) Create experimental filter (buffer_filter) that coalesces bytes
     into one large buffer before invoking the next filter in the
     chain. This filter is particularly useful with the current
     implementation of mod_autoindex when it inserted above the
     chunk_filter. mod_autoindex generates a lot of brigades that
     containing buckets holding just a few bytes each. The
     buffer_filter coalesces these buckets into a single large bucket.
     [Bill Stoddard]

  *) Add apr_sendfile() support into the core_output_filter.
     [Bill Stoddard]

  *) Add apr_sendv() support into the core_output_filter.
     [Bill Stoddard]

  *) Fix mod_log_config so that it compiles cleanly with BUFFERED_LOGS
     [Mike Abbott <mja@sgi.com>]

  *) Remove ap_send_fb. This is no longer used in Apache, and it doesn't
     make much sense, because Apache uses buckets instead of BUFFs now.
     [Ryan Bloom]

  *) send_the_file now falls back to a read/write loop on platforms that
     do not have sendfile.
     [Ryan Bloom and Brian Havard]

  *) Install apachectl correctly, and substitute the proper values so
     that it works again. [Ryan Bloom]

  *) Better(??) handle platforms that lack sendfile().
     [Jim Jagielski]

  *) APR now has UUID generation/formatting/parsing support.
     [Greg Stein]

  *) Begin the http_filter. This is an input filter that understands
     the absolute basic amount required to parse an HTTP Request. The
     goal is to be able to split headers from request body before passing
     the data back to the other filters.
     [Ryan Bloom]

  *) Bring forward from 1.3.13 the config directory implementation
     [Jim Jagielski]

  *) install apxs if it is created
     [Ryan Bloom]

  *) Added APR_IS_STATUS_condition test macros to eliminate canonical error
     conversions. [William Rowe]

  *) Now that we have ap_add_input_filter(), rename ap_add_filter() to
     ap_add_output_filter(). [Jeff Trawick]

  *) Multiple build and configuration fixes
    Build process:

      -add datadir and localstatedir substitutions
      -fix layout name
      -fix logfilename misspelling
      -fix evaluation of installation dir variables and
      -replace $foobar by $(foobar) to be usefull in the makefile
    
    Cross compile:
    
      -add rules for cross-compiling in rules.mk. Okay, rule to check for
       $CC_FOR_BUILD is still missing
      -use CHECK_TOOL instead of CHECK_PROG for ranlib
      -add missing "AR=@AR@" to severaly Makefile.in's
      -cache result for "struct rlimit"
      -compile all helper programs with native and cross compiler
       and use the native version to generate header file
     ["Rüdiger" Kuhlmann <Tadu@gmx.de>]

  *) Prepare our autoconf setup for autoconf 2.14a and for cross-
     compiling.
     ["Rüdiger" Kuhlmann <Tadu@gmx.de>]

  *) Fix a bug where a client which only sends \n to delimit header
     lines (netcat) gets a strange looking HTTP_NOT_IMPLEMENTED
     message. Start working on ebcdic co-existance with input
     filtering.
     [William Rowe, Greg Ames]

  *) If mod_so is enabled in the server always create libexec, even
     if there are no modules installed in this directory. This is a
     requirement for APXS to work correctly.
     [Ryan Bloom]

  *) Connection oriented output filters are now stored in the
     conn_rec instead of the request_rec. This allows us to add the
     output filter in the pre-connection phase instead of the
     post_read_request phase, which keeps us from trying to write an
     error page before we have a filter to write to the network.
     [Ryan Bloom, Jeff Trawick, and Greg Ames]

  *) Cleaning up an mmap bucket no longer deletes the mmap. An
     mmap can be used across multiple buckets (default_handler with
     byte ranges, mod_file_cache, mod_mmap_static), so cleanup of
     the mmap itself can't be associated with the bucket.
     [Jeff Trawick]

  *) Add .dll caching directive ISAPICacheFile to mod_isapi.
     [William Rowe]

  *) Radical surgery to improve mod_isapi support under Win32.
     Includes a number of newer ServerSupportFunction calls, support
     for ReadClient (in order to retrieve POSTs greater than 48KB),
     and general bug fixes to more reliably load ISAPI .dll's and
     prevent leaking handle resources. Note: There are still
     discrepancies between IIS's and Apache's ServerVariables, and
     async calls are still not supported. Additional warnings are
     logged to facilitate debugging of unsupported ISAPI calls.
     [William Rowe]

  *) Add input filtering to Apache. The basic idea for the input
     filters is the same as the ideas for output filters. The biggest
     difference is that instead of calling ap_pass_brigade, ap_get_brigade
     should be called, and the order of execution for the filter itself is
     different. When writing an output filter, a brigade is passed in,
     and filters operate directly on that brigade, when done, they call
     ap_pass_brigade. Input filters are the exact opposite. Because input
     is not a push operation, filters first call ap_get_brigade. When this
     function returns, the input filter will be left with a valid brigade.
     The input filter should then operate on the brigade, and return.
     [Ryan Bloom]

  *) Fix building on BSD/OS using its native make. The build system
     falls back to the BSD .include directive on that host platform.
     [Sascha Schumann]

  *) Expand dbmmanage to allow -d -m -s -p options for Crypt, MD5,
     SHA1 and plaintext password encodings. Make feature tests a
     bit more flexible. [William Rowe]

  *) Charset translation: mod_charset_lite handles output content
     translation in a filter. mod_charset_lite no longer ignores
     subrequests. A bunch of cruft related to BUFF's support for
     translating request and response bodies was removed.
     [Jeff Trawick]

  *) Move the addition of the CORE filter to the post_read_request
     hook in http_core.c. This removes the need to add the filter in
     multiple places and allows for an SSL module to be added much
     simpler. [Ryan Bloom]

  *) Fix a security problem that affects certain configurations of
     mod_rewrite. If the result of a RewriteRule is a filename that
     contains expansion specifiers, especially regexp backreferences
     $0..$9 and %0..%9, then it may be possible for an attacker to
     access any file on the web server. [Tony Finch]

  *) Fix a bug where errors that are detected during early request parsing
     don't produce visible HTTP error messages at the browser, because
     the core_filter wasn't present. [Greg Ames]

  *) Provide apr_socklen_t as a portability aid.
     [Victor J. Orlikowski]

  *) Overhaul of dbmmanage to allow a groups arg (as in Apache 1.2)
     as well as a comment arg to the add, adduser and update cmds.
     update allows the user to clear or preserve pw/groups/comment.
     Fixed a bug in dbmmanage that prevented the check option from
     parsing a password followed by :group... text. Corrected the
     seed calcualation for Win32 systems, and added -lsdbm support.
     [William Rowe]

  *) Configured mod_auth_dbm to compile with sdbmlib under Win32.
     [William Rowe]

  *) Avoid a segfault when parsing .htaccess files. An
     uninitialized tree pointer was passed to ap_build_config().
     [Jeff Trawick]

  *) Change the way that inet_addr & inet_network are checked for
     in APR's configure process to allow BeOS BONE to correctly
     find them. With this change BeOS BONE now builds from source
     with no problems. [David Reid]

  *) Fix a bug in apr_create_process() for Unix. The NULL signifying
     the end of the parameters to execve() was stored in the wrong
     location, overlaying the storage beyond the newargs[] array and
     also passing uninitialized storage to execve(), which would
     sometimes fail with EFAULT. [Jeff Trawick]

  *) Fix a bug parsing configuration file containers. With a sequence
     like this in the config file

       <IfModule mod_kilroy.c>
       any stuff
       </IfModule>
       <IfModule mod_lovejoy.c>
       (blank line)
       any stuff
       </IfModule>

     the second container would be terminated at the blank line due to
     sediment in the buffer from reading the prior </IfModule> and an
     error message would be generated for the real </IfModule> for the
     second container. Also due to this problem, any two characters
     could be used for "</" in the close of a container.
     [Jeff Trawick]

  *) ap_add_filter prototype changed to remove the ctx pointer. The
     pointer still remains in the filter structure, but it can not be
     a part of the ap_add_filter prototype. The reason is that when
     the core uses AddFilter to add a filter to the stack it doesn't
     know how to allocate the ctx pointer, or even how much memory should
     be allocated. The filters will have to be responsible for allocating
     the ctx memory when they need it.
     [Ryan Bloom]

  *) Add an AddFilter directive. This directive takes a list of filters
     that should be activated for the requested resource.
     [Ryan Bloom]

  *) apr_snprintf(): Get quad format strings working on OS/390 (and perhaps
     some other platforms). [Jeff Trawick]

  *) Modify mod_include to be a filter. Currently, it has only been tested
     on actual files, but it should work for CGI scripts too.
     [Ryan Bloom]

  *) apr_putc(), apr_puts() for Unix: handle buffered files and interrupted
     writes. apr_flush() for Unix: handle interrupted writes.
     [Jeff Trawick]

  *) NameVirtualHost can now take "*" as an argument instead of
     an IP address. This allows you to create a purely name-based
     virtual hosting server that does not have any IP addresses in
     the configuration file and which ignores the local address
     of any connections. PR #5595, PR #4455 [Tony Finch]

  *) Fix some compile warnings in mod_mmap_static.c
     [Mike Abbott <mja@sgi.com>]

  *) Fix chunking problem with CGI scripts. The general problem was that
     the CGI modules were adding an EOS bucket and then the core added an
     EOS bucket. The chunking filter finalizes the chunked response when it
     encounters an EOS bucket. Because two EOS buckets were sent, we
     finalized the response twice. The fix is to make sure we only send one
     EOS, by utilizing a flag in the request_rec.
     [Ryan Bloom]

  *) apr_put_os_file() now sets up the unget byte appropriately on Unix
     and Win32. Previously, the first read from an apr_file_t set up via
     apr_put_os_file() would return a '\0'. [Jeff Trawick]

  *) Mod_cgid now creates a single element bucket brigade, with a pipe
     bucket, instead of using BUFF's and ap_r*.
     [Ryan Bloom]

  *) APRVARS.in no longer overwrites the EXTRA_LIBS variable.
     [Mike Abbott <mja@sgi.com>]

  *) Remove ap_bopenf from buff code. This required modifying the file_cache
     code to use APR file's directly instead of going through BUFFs.
     [Ryan Bloom]

  *) Fix compile break on some platforms for mod_mime_magic.c
     [John K. Sterling <sterling@covalent.net>]

  *) Fix merging of AddDefaultCharset directive.
     PR #5872 (1.3) [Jun Kuriyama <kuriyama@imgsrc.co.jp>]

  *) Minor revamp of the rlimit sections of code. We now test
     explicitly for setrlimit and getrlimit. Also, unixd_set_rlimit()
     is now "available" even if the platform doesn't support
     the rlimit family (it's just a noop though). [Jim Jagielski]

  *) Migrate the pre-selection of which MPM to use for specific
     platforms to hints.m4, which contains (or should contain)
     all platform specific "hints". [Jim Jagielski]

  *) Remove IOLs from Apache. With filtering, IOLs are no longer necessary
     [Ryan Bloom]

  *) Add tables with non-string/binary values to APR.
     [Ken Coar]

  *) Fix some bad calls to ap_log_rerror() in mod_rewrite.
     [Jeff Trawick]

  *) Update PCRE to version 3.2. [Ryan Bloom]

  *) Change the way buckets' destroy functions are called so that
     they can be more directly used when changing the type of a
     bucket in place. [Tony Finch]

  *) Add generic support for reference-counting the resources used by
     buckets, and alter the HEAP and MMAP buckets to use it. Change
     the way buckets are initialised to support changing the type of
     buckets in place, and use it when setting aside TRANSIENT buckets.
     Change the implementation of TRANSIENT buckets so that it can be
     mostly shared with IMMORTAL buckets, which are now implemented.
     [Tony Finch]

Changes with Apache 2.0a6

  *) Add support to Apache and APR for dsos on OS/390. [Greg Ames]

  *) Add a chunking filter to Apache. This brings us one step closer
     to removing BUFF. [Ryan Bloom]

  *) ap_add_filter now adds filters in a LIFO fashion. The first filter
     added to the stack is the last filter to be called. [Ryan Bloom]

  *) Apache 2.0 has been completely documented using Scandoc. The
     docs can be generated by running 'make docs'. [Ryan Bloom]

  *) Add filtered I/O to Apache. This is based on bucket brigades,
     Currently the buckets still use BUFF under the covers, but that
     should change quickly. The only currently written filter is the
     core filter which just calls ap_bwrite. [The Apache Group]

  *) APR locks on Unix: Let APR_LOCKALL locks work when APR isn't
     built with thread support. [Jeff Trawick]

  *) Abort configuration if --with-layout was specified and there's
     no layout definition file. [Ken Coar]

  *) Add support for '--with-port=n' option to configure. [Ken Coar]

  *) Add support for extension methods for the Allow response header
     field, and an API routine for accessing r->allowed and the
     list of extension methods in a unified manner. [Ken Coar]

  *) mod_cern_meta: fix broken file reading loop in scan_meta_file().
     [Rob Simonson <simo@us.ibm.com>]

  *) Get xlate builds working again. The apr renaming in 2.0a5 broke
     APACHE_XLATE builds. [Jeff Trawick]

  *) A configuration file parsing problem was fixed. When the
     configuration file started with an IfModule/IfDefine container,
     only the last statement in the container would be retained.
     [Jeff Trawick]

Changes with Apache 2.0a5

  *) Perchild is serving pages after passing them to different child
     processes. There are still a lot of bugs, but this does work. I
     have made requests against the same installation of Apache, and had
     different servers use different user IDs to serve the responses.
     This change moves to using socketpair instead of an AF_UNIX socket.
     [Ryan Bloom]

  *) Perchild MPM still doesn't work perfectly, but it is serving pages.
     It can't seem to pass between child processes yet, but I think we
     are closer now than before. This moves us back to using Unix
     Domain Sockets. [Ryan Bloom]

  *) libapr functions and types renamed with apr_ prefix.
     #include "apr_compat.h" for 1.3.x backwards compat
     [Perl]

  *) Fix problems with APR sockaddr handling on Win32. It didn't always
     return the right information on the local socket address.
     [Gregory Nicholls <gnicholls@level8.com>]

  *) ap_recv() on Win32: Set bytes-read to 0 on error.
     [Gregory Nicholls <gnicholls@level8.com>]

  *) Add an option to not detach from the controlling terminal without
     going into single process mode. This allows for much easier
     debugging of the process startup code. [Ryan Bloom]

  *) ab: don't use perror() to report the failure of an APR function.
     [Jeff Trawick]

  *) Make dexter, mpmt_pthread, and perchild MPMs not destroy the
     scoreboard on graceful restarts.
     [Ryan Bloom]

  *) Fix segfault/SIGSEGV when running gzip from mod_mime_magic.c.
     An invalid ap_proc_t was passed to ap_create_process().
     [Jeff Trawick]

  *) Allow modules to register filters. Those filters are still
     never called, but this is a step in the right direction.
     [Ryan Bloom and Greg Stein]

  *) Register the mod_cgid daemon process for cleanup so that it is
     killed at termination if it does not die when the parent gets
     SIGTERM. This change is to fix occasional problems where the
     process stays around. Bugs in similar logic in mod_rewrite and
     mod_include were also fixed. [Jeff Trawick]

  *) Fix a bug in the time handling. Basically, we were imploding a time
     in ap_parseHTTPdate, but it had bogus data in the exploded time format.
     Namely, tm_usec and tm_gmtoff were not filled out. ap_implode_time
     uses those two fields to adjust the time value. Because of the HTTP
     spec, both of those values can be zero'ed out safely. This fixes
     the bug correctly. [Ryan Bloom]

  *) Fix a couple of place in the Windows code where the wrong error
     code was being returned. [Gregory Nicholls <gnicholls@level8.com>]

  *) Fix POOL_DEBUG (at least for prefork mpm). [Dean Gaudet]

  *) Added the APR_EOL_STR macro for platform dependent differences in
     logfiles and other raw text (such as all APR files). Fixes logfiles
     not terminated with cr/lf sequences in Win32. [William Rowe]

  *) Move all strings functions in APR to src/lib/apr/strings and create
     apr_strings.h for the prototypes. [Ryan Bloom]

  *) APR lock fixes: when using SysV sems, flock(), or fcntl(), be sure
     to repeat the syscall until we stop getting EINTR. I noticed a
     related problem at termination (SIGTERM) on FreeBSD when using
     fcntl(). Apache 1.3 had these new loops too. Also, make the flock()
     implementation work properly with child init. Previously, ap_lock()
     was essentially a no-op because all children were using different
     locks and thus nobody ever blocked. [Jeff Trawick]

  *) The htdocs/ tree has been moved out of the CVS source tree into
     a separate area for easier development. This has NO EFFECT on
     end-users or Apache installations. [Ken Coar]

  *) Integrate the mod_dav module for WebDAV protocol handling. This
     adds the dav and dav_fs modules, the SDBM library, and additional
     XML handling utilities. [Greg Stein]

  *) Clean out obsolete names (from httpd.h) for the HTTP Status Codes
     [Greg Stein]

  *) Update the lib/expat-lite/ library (bring forward changes from
     the Apache 1.3 repository). [Greg Stein]

  *) If sizeof(long long) == sizeof(long), then prefer long in APR
     configure.in. [Dave Hill <ddhill@zk3.dec.com>]

  *) Add ap_sendfile for Tru64 Unix. Also, add an error message for
     machines where sendfile is detected, but nobody has written ap_sendfile.
     [Dave Hill <ddhill@zk3.dec.com>]

  *) Compile fixes in mod_mmap_static. [Victor J. Orlikowski]

  *) ab would start up more connections than needed, then quit when the
     desired number were finished. Also fixed a logic error involving
     ab keepalives. [Victor J. Orlikowski]

  *) WinNT: Implement non-blocking pipes with timeouts to communicate
     with CGIs. Apache 2.0a4 had non-blocking pipes but without
     timeouts (i.e, if a timeout was specified, the pipe reverted to
     a full blocking pipe). Now the behaviour is more in line with
     Unix non-blocking pipes.
     [Bill Stoddard]

  *) WinNT: Implement accept socket reuse. Using mod_file_cache to
     cache open file handles along with accept socket reuse enables
     Apache 2.0 to serve non-keepalive requests for static files at
     3x the rate of Apache 1.3.(e.g, Apache 1.3 will serve 400 rps
     and Apache 2.0 will serve almost 1200 rps on my system).
     [Bill Stoddard]

  *) Merge mod_mmap_static function into mod_file_cache. mod_file_cache
     supports two config directives, mmapfile (same behavious as
     mod_mmap_static) and cachefile. Use the cachefile directive
     to cache open file handles. This directive only works on systems
     that have implemented the ap_sendfile API. cachefile works today
     on Windows NT, but has not been tested on any flavors of Unix.
     [Bill Stoddard]

  *) Cleanup the configuration. With the last few changes the
     configuration process automatically:
         inherits information about how to build from APR. Allowing
         APR to inform Apache that it should or should not use -ldl
        
         Detects which mod_cgi should be used mod_cgi or mod_cgid,
         based on the threading model

         Apache calls APR's configure process before finishing it's
         configuration processing, allowing for more information flow
         between the two.
     [Ryan Bloom]
         

  *) Change Unix and Win32 ap_setsockopt() so that APR_SO_NONBLOCK
     with non-zero argument makes the socket non-blocking. BeOS and
     OS/2 already worked this way. [Jeff Trawick]

  *) ap_close() now calls ap_flush() for buffered files, so write
     operations work a whole lot better on buffered files.
     [Jeff Trawick]

  *) Fix error messages issued from MPMs which explain where to change
     compiled-in limits (e.g., ThreadsPerChild, MaxClients, StartTreads).
     [Greg Ames]

  *) ap_create_pipe() now leaves pipes in blocking state. (This helps
     reduce the number of syscalls on Unix.) ap_set_pipe_timeout() is
     now the way that the blocking state of a pipe is manipulated.
     ap_block_pipe() is gone. [Jeff Trawick]

  *) Correct the problem where the only local host name that the IP stack
     can discover are 'undotted' private names. If no fully qualified
     domain name can be identified, the default ServerName will be set to
     the machine's IP address string. A warning is always provided if the
     ServerName not specified, but assumed. Solves PR6215 [William Rowe]

  *) Repair problems with config file processing which caused segfault
     at init when virtual hosts were defined and which caused ServerName to
     be ignored when there was no valid DNS setup. [Jeff Trawick]

  *) Removed pointless ap_is_aborted macro function. [Roy Fielding]

  *) Add ap_sendfile implementation for AIX
     [Victor J. Orlikowski]

  *) Repair C++ compatibility in ap_config.h, apr_file_io.h,
     apr_network_io.h, and apr_thread_proc.h.
     [Tyler J. Brooks <tylerjbrooks@home.com>, Jeff Trawick]

  *) Bring the allocation and pool debugging code back into a working
     state. This will need to be tested as so far it's only been used on
     BeOS. [David Reid]

  *) Change configuration command setup to be properly typesafe when in
     maintainer mode. Note that this requires a compiler that can initialise
     unions. [Ben Laurie]

  *) Turn on buffering for config file reads. Part of this was to
     repair buffered I/O support in Unix and implement buffered
     ap_fgets() for all platforms. [Brian Havard, Jeff Trawick]

  *) Win32: Fix problem where UTC offset was not being set correctly
     in the access log. Problem reported on news group by Jerry Baker.
     [Bill Stoddard]

  *) Fix segfault when reporting this type of syntax error:
     "</container> without matching <container> section", where
     container is VirtualHost or Directory or whatever.
     [Jeff Trawick]

  *) Prevent the source code for CGIs from being revealed when using
     mod_vhost_alias and the CGI directory is under the document root
     and a user makes a request like http://www.example.com//cgi-bin/cgi
     as reported in <news:960999105.344321@ernani.logica.co.uk>
     [Tony Finch]

  *) Add support for the new Beos NetwOrking Environment (BONE)
     [David Reid]

  *) xlate: ap_xlate_conv_buffer() now tells the caller when the
     final input char is incomplete; ap_bwrite_xlate() now handles
     incomplete final input chars. [Jeff Trawick]

  *) Yet another update to saferead/halfduplex stuff -- need to ensure
     that a bhalfduplex call occurs before logging or else DNS and
     such can delay the last packet of the response. [Dean Gaudet]

  *) Some syscall reduction in APR on unix -- don't seek when setting
     up an mmap; and don't fcntl() more than once per socket.
     [Dean Gaudet]

  *) When mod_cgid is started as root, the cgi daemon now switches
     to the configured User/Group (like other httpd processes)
     instead of continuing as root. [Jeff Trawick]

  *) The prefork MPM now uses an APR lock for the accept() mutex.
     It has not been getting a lock at all recently. httpd -V now
     displays APR's selection of the lock mechanism instead of the
     symbols previously respected by prefork. [Jeff Trawick]

  *) Change the mmap() feature test to check only for existence.
     The previous check required features not used by Apache.
     [Greg Ames]

  *) Fix a couple of bugs in mod_cgid: The cgi arguments were
     sometimes mangled. The len parm to accept() was not
     initialized, leading sometimes to an endless loop of failed
     accept() calls on OS/390 and anywhere else that failed the call
     if the len was negative. Use <sys/un.h> for struct sockaddr_un
     instead of declaring it ourselves to fix a compilation problem
     on Solaris. [Jeff Trawick]

  *) Add Resource limiting code back into Apache 2.0. [Ryan Bloom]

  *) Fix zombie process problem with mod_cgi. [Jeff Trawick]

  *) Port mod_mmap_static to 2.0. Make it go faster. [Greg Ames]

  *) Fix storage overlay when loading dsos. Symptom: Apache dies at
     initialization if ALLOC_DEBUG is defined; no known symptom
     otherwise. [Jeff Trawick]

  *) Fix typo in configure script when checking for mod_so. bash
     doesn't seem to have a problem but /bin/sh on Solaris does.
     Symptom: "./configure: test: unknown operator =="
     [Jeff Trawick]
   
  *) Rebind the Win32 NT and 9x services control into the MPM.
     All console, WinNT SCM and Win9x pseudo-service control code is
     now wrapped within the WinNT MPM.
     [William Rowe]

  *) Make a copy of getenv("PATH") before storing for later use. Some
     getenv() implementations use the same storage for successive calls.
     CGIs on OS/390 had a bad PATH due to this. [Jeff Trawick]

  *) Server Tokens work in 2.0 again. This also propogates the change
     to allow just the product name in the server string using
     PRODUCT_ONLY.
     [Ryan Bloom]

Changes with Apache 2.0a4

  *) EBCDIC: Rearrange calls to ap_checkconv() so that most handlers
     won't need to call it. [Greg Ames, Jeff Trawick]

  *) Move pre_config hook call to between configuration read and config
     tree walk. This allows all modules to implement pre_config hooks
     and know that they will be called at an appropriate time.
     [Ryan Bloom]

  *) mod_cgi, mod_cgid: Make ScriptLog directive work again.
     [Jeff Trawick]

  *) Add pre-config hooks back to all modules.
     [Ryan Bloom]

  *) Fix a SIGSEGV in ap_md5digest(), which is used when you have
     ContentDigest enabled and we can't/don't mmap the file.
     [Jeff Trawick]

  *) We now report the correct line number for syntax errors in config
     files. [Ryan Bloom, Greg Stein, Jeff Trawick]

  *) Brought mod_auth_digest up to synch with 1.3, fixed ap_time_t-
     related bugs, and changed shmem/locking to use apr API. Shared-mem
     is currently disabled, however, because of problems with graceful
     restarts. [Ronald Tschalär]

  *) Fix corruption of IFS variable in --with-module= handling.
     Depending on the user's shell or customization thereof, there
     would be errors generating ap_config_auto.h later in the configure
     procedure. [Jeff Trawick]

  *) mod_cgi: Restore logging of stderr from child process when ScriptLog
     isn't used (as in 1.3), except that on Unix it is now logged via
     ap_log_rerror() instead of by the child having STDERR_FILENO refer
     to the error log. [Greg Ames, Jeff Trawick]

  *) Add '-D' argument processing for run time configuration defines.
     [William Rowe]

  *) Organize http_main.c as independent code, such that no code or
     global data is exported from it. WIN32 will dynamically link it
     to the server core, so this will prevent mutual dependency.
     [William Rowe]

  *) Add separate dynamic linkage tags APR_EXPORT(), APR_EXPORT_NONSTD()
     and APR_VAR_EXPORT to correctly resolve apr functions and globals.
     [William Rowe]

  *) Add Win9x service execution and Ctrl+C/Ctrl+Break/Shutdown handlers.
     [William Rowe, Jan Just Keijser <KEIJSERJJ@logica.com>]

  *) Add mod_charset_lite for configuring character set translation.
     [Jeff Trawick]

  *) Add '-n' option to htpasswd to make it print its user:pw record
     on stdout rather than having to frob a text file. [Ken Coar]

  *) Fix saferead. Basically, we flush the output buffer if a read on the
     input will block.
     [Ryan Bloom]
 
  *) APR: Add ap_xlate_get_sb() so that an app can find out whether or not
     a conversion is single-byte only. [Jeff Trawick]

  *) BEOS: ap_shutdown should return APR_SUCCESS or errno. Note that
     the BeOS 5.0 documentation says that shutdown doesn't work yet.
     [Roy Fielding]

  *) Fix some minor errors where pid was being manipulated as an int
     instead of the portable pid_t. [Roy Fielding]

  *) Fix some error log prints that were printing the pointer to a
     structure rather than the pid within the structure.
     [Jeff Trawick, Roy Fielding]

  *) ab: Fix a command-line processing bug; track bad headers in
     err_response; support reading headers up to 2K.
     [Ask Bjoern Hansen <ask@valueclick.com>]

  *) Fix ap_resolve_env() so that it handles new function added in a prior
     alpha (see "Added the capability to do ${ENVVAR} constructs in the
     config file.") as well as the constructs used by mod_rewrite.
     [Paul Reder <rederpj@raleigh.ibm.com>]

  *) Apache 2.0 builds and runs on OS/390. [Jeff Trawick, Greg Ames]

  *) Change the EBCDIC support in functions for MD5, SHA1, and base 64 to use
     APR to perform translation, instead of accessing the hard-coded tables
     in 1.3's ebcdic.c. [Jeff Trawick]

  *) Fix some bugs (mostly lost 1.3 code) in ab's command-line processing.
     [Jeff Trawick]

  *) Add the ability to hook into the config file reading phase. Basically
     if a directive is specified EXEC_ON_READ, then when that directive is
     read from the config file, the assocaited function is executed. This
     should only be used for those directives that must muck with HOW the
     server INTERPRETS the config. This should not be used for directives
     that re-order or replace items in the config tree. Those changes should
     be made in the pre-config step.
     [Ryan Bloom]

  *) Add mod_example to the build system.
     [Tony Finch]

  *) APR: Add ap_xlate_conv_byte() to convert one char between single-
     byte character sets. [Jeff Trawick]

  *) Pick up various EBCDIC fixes from 1.3 (from Martin
     Kraemer and Oliver Reh originally according to the change log).
     [Jeff Trawick]

  *) Fix a couple of problems in RFC1413 support (controlled by the
     IdentityCheck directive). Apache did not build the request string
     properly and more importantly Apache would loop forever if the
     would-be ident server dropped the connection before sending a
     properly terminated response. [Jeff Trawick]

  *) apxs works in 2.0.
     [Ryan Bloom]

  *) Reliable piped logs work in 2.0.
     [Ryan Bloom]

  *) Introduce a hash table implementation into APR to be used for
     replacing tables and other random data structures in Apache.
     [Tony Finch]

  *) Add some more error reporting to htpasswd in the case of problems
     generating or accessing the temporary file. Also, pass in a
     buffer if the implementation knows how to use it (i.e., if L_tmpnam
     is defined). [Ken Coar]

  *) Configure creates config.nice now containing your configure
     options. Syntax: ./config.nice [--more-options]
     [Sascha Schumann]

  *) Fix various return code problems in APR on Win32. For most of
     these, APR was returning APR_EEXIST instead of GetLastError()/
     WSAGetLastError(). [Jeff Trawick]

  *) Make piped logs work again in version 2.0
     [Ryan Bloom]

  *) Add VPATH support to UNIX build system of Apache and APR.
     [Sascha Schumann]

  *) Fix ap_tokenize_to_argv to respect the const arguments that are
     passed to it.
     [Ryan Bloom]

  *) Fix mm's memcpy/memset macros, pointer arithmetic was broken.
     Patch submitted to author.
     [Sascha Schumann]

  *) Fix mm configuration on Solaris 8 x86 and OS/390. Don't require
     /sbin in PATH on FreeBSD (all submitted to rse previously)
     [Jeff Trawick]

  *) Fix building Pthread-based MPMs on OpenBSD
     [Sascha Schumann] PR#26

  *) Fix ap_readdir() problem on systems where d_name[] field in
     struct dirent is declared with only one byte. (This problem only
     affected multithreaded builds.) This caused a segfault during
     pool cleanup with mod_autoindex on Solaris (Solaris 8 x86, at
     least). [Jeff Trawick]

  *) Fix some make-portability problems on at least Tru64, Irix
     and UnixWare.
     [Sascha Schumann] PR#18, PR#39

  *) Add ap_sigwait() to support old-style sigwait() on systems
     like OS/390 and UnixWare.
     [Sascha Schumann]

  *) Add POSIX-thread flags for more platforms.
     [Sascha Schumann]

  *) Fix some minor bugs in ap_strerror(). Teach ap_strerror()
     (on Unix, at least) to handle resolver errors. Fix a bug in
     the definition of APR_ENOMEM so that ap_strerror() can spit
     out the correct error message for it.
     [Jeff Trawick]

Changes with Apache 2.0a3

  *) mod_so reports ap_os_dso_error() if ap_dso_load() fails
     [Doug MacEachern]

  *) API: *HOOK* macros now have an AP_ prefix
     [Doug MacEachern]

  *) Win32: Eliminate redundant calls to initialize winsock.
     [Tim Costello <timcostello@ozemail.com.au>]

  *) Fix bugs initializing ungetchar for pipes.
     [Chia-liang Kao <clkao@CirX.ORG>]

  *) The ab program in the src/support directory is now portable using
     APR.
     [Ryan Bloom]

  *) Support directory is being compiled when the server is built
     [Ryan Bloom]

  *) The configure option --with-program-name has been added to allow
     developers to rename the executable at configure time. This also
     changes the name of the config files to match the executable's name.
     [Ryan Bloom]

  *) mod_autoindex: Add `IndexOptions +VersionSort', to nicely sort filenames
     containing version numbers. [Martin Pool]

  *) ap_open(..,APR_OS_DEFAULT,..) uses perms 0666 instead of 0777 on
     Unix; access_log and error_log now created with these perms; non-
     Unix is unaffected [Jeff Trawick]
     
  *) Finished move of ap_md5 routines to apr_md5. Removed ap_md5.h.
     Replaced more magic numbers with MD5_DIGESTSIZE.
     [William Rowe, Roy Fielding]

  *) Win32: Get mod_auth_digest compiling and added to the Windows
     build environment. Not tested and I'd be suprised if it
     actually works. [Bill Stoddard]

  *) Revamp the Win32 make environment. Makefiles have been removed and
     Apache.dsw created to bring together all the pieces. Create new file
     os/win32/BaseAddr.ref to define module base addresses (to prevent
     dll relocation at start-up).
     [William Rowe, Greg Marr, Tim Costello, Bill Stoddard]

  *) [EBCDIC] Port Paul Gilmartin's CRLF patch from 1.3. This replaces most
     of the \015, \012, and \015\012 constants with macros.
     [Greg Ames <gregames@us.ibm.com>]
     
  *) Add ap_xlate_open() et al for translation of text between different
     character sets. The initial implementation requires iconv().
     [Jeff Trawick]

  *) More FAQs and answers from comp.infosystems.www.servers.unix.
     [Joshua Slive <slive@finance.commerce.ubc.ca>]

  *) CGI output is being timed out now.
     [Ryan Bloom]

  *) Fix the problem with dieing quietly. dupfile now takes a pool which
     is used by the new apr file. There is no reason to create a new file
     with the same lifetime as the original file.
     [Ryan Bloom]

  *) Win32: Attempt to eliminate dll relocation at start-up by specifying
     module base addresses. This will help shooting seg faults
     in the field. [William Rowe <wrowe@lnd.com>]

  *) Update Apache on Windows documentation. Add new document
     describing how to compile Apache on Windows.
     [William Rowe <wrowe@lnd.com>]

  *) ap_set_pipe_timeout(), ap_poll(), and APR_SO_TIMEOUT now take
     microseconds instead of seconds. Some storage leaks and other
     minor bugs in related code were fixed. [Jeff Trawick]

  *) Win32: First cut at getting mod_isapi working under 2.0
     [William Rowe <wrowe@lnd.com>]

  *) First stab at getting mod_auth_digest working under 2.0
     quick change summary:
     - moved the random byte generation (ap_generate_random_bytes) into APR
     - now uses ap_time_t
     - compiles and runs on linux
     - tested with amaya
     [Brian Martin <bmartin@penguincomputing.com>]

  *) Win32: Move the space stripping of physical service names
     fix up from Apache 1.3. #include'ing "ap_mpm.h" fixes up an
     unresolved symbol. Add dependency checking to the
     CreateService call to ensure TCPIP and AFP (winsock) is started
     before Apache.
     [William Rowe <wrowe@lnd.com>]

  *) Win32: Add code to perform latebinding on functions that may
     not exist on all levels of Windows where Apache runs. This
     is needed to allow Apache to start-up on Win95/98. All calls
     to non portable functions should be protected with
     ap_oslevel checks to prevent runtime segfaults.
     [William Rowe <wrowe@lnd.com>]

  *) Fix fallback default values for SHM_R and SHM_W [Martin Kraemer]

  *) Get lingering_close() working again. [Dean Gaudet, Jeff Trawick]

  *) Win32: Get non-blocking CGI pipe reads working under Windows NT.
     This addresses PR 1623. Still need to address timing out runaway
     CGI scripts. [Bill Stoddard]
 
  *) Win32: Make ap_stat Windows 95/98 friendly
     [William Rowe <wrowe@lnd.com>]

  *) Win32: Fix a bug in ap_get_oslevel which causes GetVersionEx() to
     always fail. Need to initialise the dwOSVersionInfoSize member of the
     OSVERSIONINFO struct before calling GetVersionEx, so GetVersionEx
     always fails.

     The patch also enhances ap_get_oslevel (and the associated enum) to
     handle selected service packs for NT4, and adds recognition for
     Windows 2000. This is useful, eg. if we can recognise NT4 SP2 then
     we can use ReadFileScatter and WriteFileGather in readwrite.c.
     [Tim Costello <Tim.Costello@BTFinancialgroup.com>]

  *) Get mod_rewrite building and running, and mod_status building for Win NT
     [Allan Edwards <ake@raleigh.ibm.com>]

  *) Patch to port mod_auth_db to the 2.0 api and also to support
     Berlekey DB 3.0. It works for me with both Berkeley DB 3.0.55 and
     2.7.7. It should work with version 1 as well but I haven't tested it.
     [Brian Martin <bmartin@penguincomputing.com>]

  *) Get APR DSO code working under Windows. Includes cross platform
     fixes to mod_so.c.
     [Tim.Costello@BTFinancialgroup.com]

  *) Fix some of the Windows APR time functions.
     [William Rowe]

  *) FAQ changes related to tidying up historical documents on the web site.
     [Joshua Slive <slive@finance.commerce.ubc.ca>]

  *) Move Windows DSO code into APR.
     [Bill Stoddard]

  *) Eliminate apr_win.h and apr_winconfig.h (and the ugly #ifdefs they cause).
     Now, apr.h and apr_config.h are generated from apr.hw and apr_config.hw
     at build time. At this point, the server will not compile on Windows because
     of the recent DSO commits. Fixing those next.
     [Bill Rowe & Bill Stoddard]

  *) Added error checking for file I/O APR routines.
     [Jon Travis <jtravis@covalent.net>]

  *) APR: Don't use the values of resolver error codes for the
     corresponding APR error codes. On Unix and Win32, return the
     proper APR error code after a resolver error. [Jeff Trawick]

Changes with Apache 2.0a2

  *) Renamed the executable back to httpd on all platforms other
     than Win32
     [Ryan Bloom]

  *) Allow BeOS to survive restarts, log properly and a few
     small things it had problems with due to the way it setup
     users and groups. [David Reid]

  *) Get mod_rewrite working with APR locks
     [Paul Reder <rederpj@raleigh.ibm.com>]

  *) Actually remove the sempahore when the lock cleanup routine
     is called on BeOS. [David Reid]

  *) Clear hook registrations between reads of the config file.
     When DSOs are unloaded and re-loaded the old hook pointers may
     no longer be valid. This fix eliminates potential segfaults.
     [Allan Edwards <ake@raleigh.ibm.com>]

  *) Fix a problem with Sigfunc not being defined or bypassed
     if sigaction() wasn't found. [Jim Jagielski]

  *) Fix the locking mechanism on BSD variants. They now use fcntl
     locks. This allows the server to start and serve pages.
     [Ryan Bloom]

  *) First cut at getting the Win32 installer to work
     [William Rowe <wrowe@lnd.com>]

  *) Get htpasswd compiling under Windows
     [William Rowe <wrowe@lnd.com>]

  *) Change the log message for a bind() failure to show the
     interface and port number. [Jeff Trawick]

  *) Import the documentation from 1.3.12 and bring parts of it
     up-to-date with respect to the changes that have occurred
     in 2.0.
     [Tony Finch]

  *) BeOS MPM updated. CGI bug on BeOS fixed. IP addresses
     now logged correctly on BeOS.
     [David Reid]

  *) Create one makefile for all Win32 distributions (NT/2000/95/98).
     Makefile.win includes the same user interface as the old
     Makefile.nt
     [William Rowe <wrowe@lnd.com>, Jeff Trawick <trawick@us.ibm.com>]

  *) Win32 exec now uses COMSPEC environment string for command
     shell path resolution.
     [William Rowe <wrowe@lnd.com>] PR#3715

  *) Win32: ap_connect() was not returning correct error condition
     PR5866
     [Allen Prescott <allen@clanprescott.com>]

  *) Win32: ap_open() was broken on Win9x because an NT-specific
     flag was passed to CreateFile. ap_puts() added an unnecessary
     '\n'.
     [Jeff Trawick <trawick@us.ibm.com>]

  *) Put in Korean and Norwegian index.html pages (2.0 and 1.3)
     which where donated by Lee Kuk Hyun and Lorant Czaran. 'Fixed'
     confusing ee/et name and made all extensions language/dialect
     rather than country reflecting. Changed example files to
     explicit reflect the ISO charset and added a few common
     ones to the example config [dirkx]

  *) Extend external module capability. To use this, you call
     configure with --with-module=path/to/mod1,path/to/mod2,etc.
     [Ryan Bloom]

  *) Backported the various "default charset" fixes from 1.3.12,
     including the AddDefaultCharset directive. [Jim Jagielski]

  *) Added the capability to do ${ENVVAR} constructs in the
     config file. E.g. 'ServerAdmin ${POSTMASTER}'. As commited
     it does this on a line by line basis; i.e. if the envvar
     expands to something with spaces you have to protect it
     by adding quotes around it (Unless of course you expect it
     to contains more than one argument. Alternatively you
     can compile it on a per token basis; which is what people
     usually expect by setting RESOLVE_ENV_PER_TOKEN. But this
     hampers fancier hacks.
     [Dirk-Willem van Gulik]

  *) Changed the 'ErrorDocument' syntax in that it NO longer
     supports the asymetric

                ErrorDocument 301 "Some message

     Note the opening " quote, without a closing quote. It now
     has either the following syntaxes

                ErrorDocument XXX /local/uri
                ErrorDocument XXX http://valid/url
                ErrorDocument XXX "Some Message"

     The recognition heuristic is: if it has a space it
     is a message. If it has no spaces and starts with a /
     or is a valid URL then treat it that way. Otherwise it
     is assumed to be a message.

     This breaks backward compatibility but makes live a hell
     of a lot easier for GUI's and config file parsers.
     [Dirk-Willem van Gulik]

  *) Changed 'CacheNegotiatedDocs' from its present/not-present
     syntax into a 'on' or 'off' syntax. As it currently is the
     only non nesting token which uses NO_ARGS and thus is an
     absolute pain for any config interface automation. This
     breaks backward compatibility. [Dirk-Willem van Gulik]

  *) Add ability to add external modules to the build process. This is
     done with --with-module=/path/to/module. Modules can only be added
     as static modules at this point.
     [Ryan Bloom]

Changes with Apache 2.0a1

  *) Fix FreeBSD 3.3 core dump.
     Basically, ap_initialize() needs to get called before
     create_process(), since create_process() passes op_on structure
     to semop() to get a lock, but op_on isn't initialized until
     ap_initialize() calls setup_lock(). Here is a slight
     rearrangement to main() which calls ap_initialize() earlier...
     [Jeff Trawick <trawick@us.ibm.com>]

  *) Enable Apache to use sendfile/TransmitFile API
     [Bill Stoddard, David Reid, Paul Reder]

  *) Re-Implement Win32 APR network I/O APIs and most of the file I/O
     APIs.
     [Bill Stoddard]

  *) Make file I/O and network I/O writev/sendv APIs consistent.
     Eliminate use of ap_iovec_t and use Posix struct iovec.
     Use seperate variable on ap_writev to set the number of iovecs
     passed in and number of bytes written.
     [Bill Stoddard]

  *) Adapt file iol to use APR functions. Replaced ap_open_file()
     with ap_create_file_iol(). ap_create_file_iol() requires that
     the file be opened prior to the call using ap_open().
     [Bill Stoddard]

  *) Port mod_include and mod_cgi to 2.0
     [Paul Reder, Bill Stoddard]

  *) ap_send{,v}, ap_recv, ap_sendfile API clarification --
     bytes_read/bytes_written is always valid (never -1). Plus
     some fixes to buff.c to correct problems introduced by the
     errno => ap_status_t changes a while back. Plus a fix to
     chunked encoding introduced right at the beginning of 2.0.
     [Dean Gaudet]

  *) Revamped UNIX build system to use autoconf and libtool.
     [Manoj Kasichainula, Sascha Schumann]

  *) port mod_rewrite to 2.0. [Paul J. Reder <rederpj@raleigh.ibm.com>]

  *) More rigorous checking of Host: headers to fix security problems
     with mass name-based virtual hosting (whether using mod_rewrite
     or mod_vhost_alias).
     [Ben Hyde, Tony Finch]
  
  *) Add back support for UseCanonicalName in <Directory> containers.
     [Manoj Kasichainula]

  *) Added APLOG_STARTUP log type. This allows us to write an error
     message without any of the date and time information. As a part
     of this change, I also removed all of the calls to fprintf(stderr
     and replaced them with calls to ap_log_error using APLOG_STARTUP
     writing to stderr is no longer portable, because we don't direct
     stderr to the error log on all platforms.
     [Ryan Bloom]
 
  *) Convert error logging functions to take errno as an argument.
     This makes our error logs more portable, because some Windows API's
     don't set errno. This change allows us to still output a valid
     message on all of our platforms.
     [Ryan Bloom]

  *) mod_mime_magic runs in 2.0-dev now.
     [Paul Reder <rederpj@raleigh.ibm.com>]

  *) sendfile has been added to APR.
     [John Zedlewski <zedlwski@Princeton.EDU>]

  *) buff.c has been converted to no longer use errno.
     [Manoj Kasichainula]

  *) mod_speling runs in 2.0-dev now: a bug in readdir_r handling and
     interface adaption to APR functions did it. [Martin Kraemer]

  *) Support DSOs properly on 32-bit HP-UX 11.0
     [Dilip Khandekar <dilip@cup.hp.com>]

  *) Updated MM in APR source tree from version 1.0.8 to 1.0.11
     [Ralf S. Engelschall]

  *) Cleaned APR build environment integration and bootstrap APR
     automatically for developers from src/Configure.
     [Ralf S. Engelschall]

  *) Fixed building of src/support/htpasswd.c
     [Ralf S. Engelschall]

  *) When generating the Location: header, mod_speling forgot
     to escape the spelling-fixed uri. (Forw-Port from 1.3)
     [Martin Kraemer]

  *) Moved mod_auth_digest.c from experimental to standard. [Roy Fielding]

  *) Change all pools to APR contexts. This is the first step to
     incorporating APR into Apache. [Ryan Bloom]

  *) Move "handler not found" warning message to below the check
     for a wildcard handler. [Dirk <dirkm@teleport.com>, Roy Fielding]
     PR#2584, PR#2751, PR#3349, PR#3436, PR#3548, PR#4384, PR#4795, PR#4807

  *) Support line-continuation feature in config.option file and
     allow the loading of multiple option sections at once via
     ``--with-option=<section1>,<section2>,...''
     [Ralf S. Engelschall]

  *) Rebuilt CVS repository with Apache 1.3.9 as basis. [Roy Fielding]

Changes with Apache MPM

  *) Use asynchronous AcceptEx() and a completion port to accept and
     dispatch connections to threads in Windows NT/2000.
     [Bill Stoddard]

  *) Implement WINNT Win32 MPM from original Win32 code in http_main.c
     [Bill Stoddard]

  *) Implement the APACI --with-option facility
     (per default used the config.option file).
     [Ralf S. Engelschall]

  *) MPM BEOS port. [David Reid <abb37@dial.pipex.com>]

  *) Start to implement module-defined hooks that are a) fast and b) typesafe.
     Replace pre_connection module call with a register_hook call and
     implement pre_connection as a hook. The intent is that these hooks will
     be extended to allow Apache to be multi-protocol, and also to allow the
     calling order to be specified on a per-hook/per-module basis.
     [Ben Laurie]

  *) Implement mpm_* methods as "modules". Each method gets its own
     subdir in src/modules (eg: src/modules/prefork). Selection
     of method uses Rule MPM_METHOD. [Jim Jagielski]

  *) Port the hybrid server from the apache-apr repository as
     mpm_mpmt_pthread. [Manoj Kasichainula]

  *) os/unix/unixd.[ch]: detach, setuid, setgid, stuff which will be common
     amongst the unix MPMs.

  *) mpm_prefork: throw away all the alarm/timeout crud; and clean up the
     signal handling for the new world order. [Dean Gaudet]

  *) Crude ap_thread_mutex abstraction so that we get the pthread stuff out
     of alloc.c for now. [Dean Gaudet]

  *) Handle partial large writes correctly. [Ben Laurie]

  *) Eliminate conn_rec's pointer to server. All it knows is the base server
     based on IP/port. [Ben Laurie]

  *) Port a bunch of modules to the new module structure.
     ["Michael H. Voase" <mvoase@midcoast.com.au>]

  *) I/O layering and BUFF revamp. See docs/buff.txt. [Dean Gaudet]

  *) Basic restructuring to introduce the MPM concept; includes various
     changes to the module API... better described by
     docs/initial_blurb.txt. [Dean Gaudet]

Changes with Apache pthreads

  *) New buff option added: BO_TIMEOUT. It describes the timeout for
     buff operations (generally over a network).
     [Dean Gaudet, Ryan Bloom, Manoj Kasichainula]

  *) Created http_accept abstraction. Added 4 new functions (not exported):
     init_accept(), begin_accepting_requests(), get_request(),
     stop_accepting_requests() [Bill Stoddard]

  *) Fix to ap_rprintf call that allows mod_info to work properly.
     [James Morris <jmorris@intercode.com.au>]

  *) user and ap_auth_type fields were moved from connection_rec to
     request_rec. [Ryan Bloom]

  *) Removed the ap_block_alarms and ap_unblock_alarm calls. These aren't
     needed in a threaded server.

  *) Initial pthread implementation from from Dean's apache-nspr code.
     [Bill Stoddard, Ryan Bloom]


Changes with Apache 1.3.9

  *) Remove bogus error message when a redirect doesn't set Location.
     Instead, use an empty string to avoid coredump if the error message
     was supposed to include a location. [Roy Fielding]

  *) Don't allow configure to include mod_auth_digest unless it is
     explicitly requested, even if the user asked for all modules.
     [Roy Fielding]

  *) Translate module names to dll names for OS/2 so that they are no more
     than 8 characters long and have an extension of "dll" instead of "so".
     [Brian Havard]

  *) Print out pointer to Rule DEV_RANDOM when truerand lib not found.
     Fix test-compile check to check for randbyte instead of trand32.
     Use ap_base64encode_binary/decode instead of copy in mod_auth_digest.c
     and tweak to make Amaya happier. [Ronald Tschalär]

  *) Ensure that the installed expat include files are world readable,
     just like the other header files. [Martin Kraemer]

  *) Fixed generated AddModule adjustments in APACI's `configure' script
     in order to allow (new) modules like mod_vhost_alias to be handled
     correctly (which was touched by the adjustments for mod_alias).
     [Ralf S. Engelschall]

  *) For binary builds, add -R flag to apachectl to work around the lack of
     an absolute path to the ./libexec directory where the libhttp.ep file
     is needed for SHARED_CORE architectures. [Randy Terbush]

  *) WIN32: Create the CGI script process as DETACHED. This may solve the
     problem observed by some Win95/98 users where they get CGI script
     output sent to the console. [Bill Stoddard]

  *) Fix (re)naming in the uuencode/decode section. The ap/ap_
     routines are now called ap_base64* and are 'plain' (i.e., no
     pool access or anything clever). Inside util.c the routines acting
     like pstrdup are called ap_pbase64encode() and ap_pbase64decode().
     The oddly named ap_uuencode(), ap_uudecode() are kept around for
     now but deprecated. [dirkx]

  *) Clean up the base64 and SHA1 additions and make sure they are
     represented in the ApacheCore.def, ApacheCoreOS2.def, and httpd.exp
     files. [Roy Fielding]

  *) WIN32: Migrate to InstallShield 5.5 and provide a bit more error
     checking. Allow compiling on VS 6.0. [Randy Terbush]

  *) Fixed assumption of absolute paths in binbuild.sh. [Tony Finch]

  *) Use TestCompile to search for the truerand library (rather than blindly
     assuming its existence). If it is not found, complain (but do not
     exit - yet). [Martin Kraemer]

  *) We forgot to add the new exported function names to
     src/support/httpd.exp. [Bill Stoddard, Randy Terbush]

  *) Add description of -T command-line option to usage().
     [Ralf S. Engelschall]

  *) For "some" platforms (notably, EBCDIC based ones), libos needs to be
     searched only AFTER libap has been searched, because libap needs
     some symbols from libos. [Martin Kraemer]

  *) Fix conflict with original mod_digest related to the symbol of the
     module dispatch list (which has to be unique for DSO and follow the
     usual conventions for the installation procedure).
     [Ralf S. Engelschall]

  *) Add a dbm-library check for the "usual places" (-ldbm, -lndbm, -ldb)
     for other platforms as well. [Martin Kraemer]

  *) Make ap_sha1.c compile for EBCDIC platforms: replace remaining LONG
     types by AP_LONG and replace reference to renamed variable 'ubuf'
     by 'buffer'. [Martin Kraemer]

Changes with Apache 1.3.8 [not released]

  *) Flush the output buffer immediately after sending an error or redirect
     response, since the result may be needed by the client to abort a
     long data transfer or restart a series of pipelined requests.
     [Tom Vaughan <tvaughan@aventail.com>, Roy Fielding]

  *) PORT: Improved compilation and DSO support on Sequent DYNIX/ptx.
     [Ian Turner <iant@sequent.com>] PR#4735

  *) Local struct mmap in http_core.c conflicted with system structure
     name on DYNIX -- changed to mmap_rec. [Roy Fielding] PR#4735

  *) Added updated mod_digest as modules/experimental/mod_auth_digest.
     [Ronald Tschalär <ronald@innovation.ch>]

  *) Fix a memory leak where the module counts were getting messed
     up across restarts. [David Harris <dharris@drh.net>]

  *) CIDR addresses such as a.b.c.d/24 where d != 0 weren't handled
     properly in mod_access.
     ["Paul J. Reder" <rederpj@raleigh.ibm.com>] PR#4770

  *) RewriteLock/RewriteMap didn't work properly with virtual hosts.
     [Dmitry Khrustalev <dima@bog.msu.su>] PR#3874

  *) PORT: Support for compaq/tandem/com.
     [Michael Ottati <michael.ottati@compaq.com>, dirkx]

  *) Added SHA1 password encryption support to easy migration from
     Netscape servers. See support/SHA1 for more information.
     Caused the separation of ap_md5.c into md5, sha1 and a general
     ap_checkpass.c with just a validate_passwd routine. Added a
     couple of flags to support/htpasswd. Some reuse of the to64()
     function; hence renamed to ap_to64().
     [Dirk-Willem van Gulik, Clinton Wong <clintdw@netcom.com>]

  *) Change for EBCDIC platforms (TPF and BS2000) to correctly deal
     with ASCII/EBCDIC conversions in "ident" query.
     [David McCreedy <McCreedy@us.ibm.com>]

  *) Get rid of redefinition warning on MAC_OS_X_SERVER platform.
     Change "Power Macintosh" to Power* so if uname prints "Power Book"
     we're still happy on Rhapsody platforms. [Wilfredo Sanchez]

  *) Fix SIGSEGV on some systems because the Vary fix below included
     a call to table_do with a variable argument list that was not
     NULL terminated. Replaced with better implementation. [Roy Fielding]

Changes with Apache 1.3.7 [not released]

  *) The "Vary" response header field is now sanitised right before
     the header is sent back to the client. Multiple "Vary" fields
     are combined, and duplicate tokens (e.g., "Vary: host, host" or
     "Vary: host, negotiate, host, accept-language") are reduced to
     single instances. This is a better solution than the force-no-vary
     one (which is still valid for clients that can't cope with Vary
     at all). PR#3118 [Dean Gaudet, Roy Fielding, Ken Coar]

  *) Portability changes for BeOS. [David Reid abb37@dial.pipex.com]

  *) Link DSO's with "gcc -shared" instead of "ld -Bshareable" at
     least on Linux and FreeBSD for now.
     [Rasmus Lerdorf]

  *) Win32: More apache -k restart work. Restarts are now honored
     immediately and connections in the listen queue are -not- lost.
     This is made possible by the use of the WSADuplicateSocket()
     call. The listeners are opened in the parent, duplicated, then
     the duplicates are passed to the child. The original listen sockets
     are not closed by the parent across a restart, thus the listen queue
     is preserved.
     [Bill Stoddard <stoddard@raleigh.ibm.com>]

  *) Fix handling of case when a client has sent "Expect: 100-continue"
     and we are going to respond with an error, but get stuck waiting to
     discard the body in the pointless hope of preserving the connection.
     [Roy Fielding, Joe Orton <jeo101@york.ac.uk>] PR#4499, PR#3806

  *) Fix 'configure' to work correctly with SysV-based versions of
     'tr' (consistent with Configure's use as well). [Jim Jagielski]

  *) apxs: Add "-S var=val" option which allows for override of CFG_*
     built-in values. Add "-e" option which works like -i but doesn't
     install the DSO; useful for editing httpd.conf with apxs. Fix
     editing code so that multiple invocations of apxs -a will not
     create duplicate LoadModule/AddModule entries; apxs can now be
     used to re- enable/disable a module. [Wilfredo Sanchez]

  *) Win32: Update the server to use Winsock 2. Specifically, link with
     ws2_32.lib rather than wsock32.lib. This gives us access to
     WSADuplcateSocket() in addition to some other enhanced comm APIs.
     Win 95 users may need to update their TCP/IP stack to pick up
     Winsock 2. (See http://www.microsoft.com/windows95/downloads/)
     [Bill Stoddard stoddard@raleigh.ibm.com]

  *) Win32: Redirect CGI script stderr (script debug info) into the
     error.log when CGI scripts fail. This makes Apache on Win32
     behave more like Unix.
     [Bill Stoddard stoddard@raleigh.ibm.com]

  *) Fixed `httpd' usage display: -D was missing.
     [Ralf S. Engelschall] PR#4614

  *) Fix `make r' test procedure in src/regex/: ap_isprint was not found.
     [Ralf S. Engelschall] PR#4561, PR#4562

  *) OS/2: Fix problem with accept lock semaphores where server would die with
     "OS2SEM: Error 105 getting accept lock. Exiting!"
     [Brian Havard] PR#4505

  *) Add DSO support for DGUX 4.x using gcc. Tested on x86 platforms.
     [Randy Terbush <randy@covalent.net>]
 
  *) Add the new mass-vhost module (mod_vhost_alias.c) developed and
     used by Demon Internet, Ltd. [Tony Finch <fanf@demon.net>]

  *) Better GCC detection for DSO flags under Solaris 2 where the `cc'
     command potentially _is_ GCC. [Ralf S. Engelschall]

  *) Fix apxs build issues on AIX
     [Rasmus Lerdorf <rasmus@raleigh.ibm.com>]

  *) DocumentRoot Checking: Under previous versions, when Apache
     first started up, it used to do a stat of each DocumentRoot to
     see if it existed and was a directory. If not, then an error
     message was printed. THIS HAS BEEN DISABLED. If DocumentRoot
     does not exist, you will get error messages in error_log. If
     the '-t' command line option is used (to check the configuration)
     the check of DocumentRoot IS performed. An additional command
     line option, '-T', has been added if you want to avoid the
     DocumentRoot check even when checking the configuration.
     [Jim Jagielski]

  *) Win32: The query switch "apache -S" didn't exit after showing the
     vhost settings. That was inconsistent with the other query functions.
     [Bill Stoddard - Fixed by Martin on Unix in 1.3.4]

  *) Win32: Changed behaviour of apache -k restart.
     Previously, the server would drain all connections in the stack's
     listen queue before honoring the restart. On a busy server, this
     could take hours. Now, a restart is honored almost immediately.
     All connections in Apache's queues are handled but connections in
     the stack's listen queue are discarded. Restart triggered by
     MaxRequestPerChild is unchanged.
     [Bill Stoddard <stoddard@raleigh.ibm.com>]

  *) Win32: Eliminated unnecessary call to wait_for_multiple_objects in
     the accept loop. Good for a 5% performance boost. Cleaned up
     parent/child process management code.
     [Bill Stoddard <stoddard@raleigh.ibm.com>]

  *) Added ceiling on file size for memory mapped files.
     [John Giannandrea <jg@meer.net>] PR#4122

  *) Fix ndbm.h include problems with brain-dead glibc >= 2.1 which
     has ndbm.h in a non-standard db1/ subdir. PR#4431, PR#4528
     [Henri Gomez <gomez@slib.fr>, Ralf S. Engelschall]

  *) Determine AP_BYTE_ORDER for ap_config_auto.h and already
     use this at least for Expat. [Ralf S. Engelschall]

  *) Allow .module files to specify libraries with Lib:.
     [Ben Laurie]

  *) Allow SetEnvIf[NoCase] to test environment variables as well
     as header fields and request attributes. [Ken Coar]

  *) Fix mod_autoindex's handling of ScanHTMLTitles when file
     content-types are "text/html;parameters". PR#4524 [Ken Coar]

  *) Remove "mxb" support from mod_negotiation -- it was a draft feature
     never accepted into any standard, and it opens up certain DoS
     attacks. [Koen Holtman <Koen.Holtman@cern.ch>]

  *) TestCompile updated. We can now run programs and output the
     results during the Configure process. [ Jim Jagielski]

  *) The source is now quad (long long) aware as needed. Specifically,
     the Configure process determines the correct size of off_t and
     *void. When the OS/platform/compiler supports quads, ap_snprintf()
     provides for the 'q' format qualifier (if quads are not available,
     'q' is silently "demoted" to long). [Jim Jagielski]

  *) When the username or password fed to htpasswd is too long, include the
     size limit in the error message. Also report illegal characters
     (currently only ':') in the username. Add the size restrictions
     to the man page. [Ken Coar]

  *) Fixed the configure --without-support option so it doesn't result in
     an infinite loop. [Marc Slemko]

  *) Piped error logs could cause a segfault if an error occured
     during configuration after a restart.
     [Aidan Cully <aidan@panix.com>] PR#4456

  *) If a "Location" field was stored in r->err_headers_out rather
     than r->headers_out, redirect processing wouldn't find it and
     the server would core dump on ap_escape_html(NULL). Check both
     tables and raise HTTP_INTERNAL_SERVER_ERROR with a log message
     if Location isn't set. [Doug MacEachern, Ken Coar]

  *) Add RULE_EXPAT, the src/lib/ directory structure, and a modified copy
     of the Expat 1.0.2 distribution. [Greg Stein]

  *) Replace regexec() calls with calls to a new API stub function
     ap_regexec(). This solves problems with DSO modules which use the regex
     library. [Jens-Uwe Mager <jum@helios.de>, Ralf S. Engelschall]

  *) Add 'Request_Protocol' special keyword to mod_setenvif so that
     environment variables can be set according to the protocol version
     (e.g., HTTP/0.9 or HTTP/1.1) of the request. [Ken Coar]

  *) Add DSO support for OpenStep (Mach 4.2) platform.
     [Ralf S. Engelschall, Rex Dieter <rdieter@math.unl.edu>] PR#3997

  *) Fix sed regex for generating ap_config_auto.h in src/Configure.
     [Jan Gallo <gallo@pvt.sk>] PR#3690, PR#4373
 
  *) Switch to /bin/sh5 in APACI on Ultrix and friends to avoid problems with
     their brain-dead /bin/sh. [Ralf S. Engelschall] PR#4372

  *) Better DSO flags recognition on NetBSD platforms using ELF.
     [Todd Vierling <tv@pobox.com>] PR#4310

  *) Always log months in english format for %t in mod_log_config.
     [Petr Lampa <lampa@fee.vutbr.cz>] PR#4366, 679

  *) Support for server-parsed and multiview-determined ReadmeName and
     HeaderName files in mod_autoindex. Removed the restriction on
     "/"s in ReadmeName and HeaderName directives since the *sub_req*
     routines will deal with the access issues. (It's now possible to
     have {site|group|project|customer|...} wide readmes and headers.)
     [Raymond S Brand <rsbx@rsbx.net>, Ken Coar] PR#1574, 3026, 3529,
     3569, 4256

  *) When stat() fails, don't assume anything about the contents of
     the struct stat. [Ed Korthof <ed@bitmechanic.com>]

  *) It's OK for a semop to return EINTR, just loop around and try
     again. [Dean Gaudet]

  *) Fix configuration engine re-entrant hangups, which solve a
     handful of problems seen with mod_perl <Perl> configuration sections
     [Salvador Ortiz Garcia <sog@msg.com.mx>]

  *) Mac OS and Mac OS X Server now use the appropriate custom layout
     by default when building with APACI; allow for platform-specific
     variable defaults in configure. [Wilfredo Sanchez]

  *) Do setgid() before initgroups() in http_main; some platforms
     zap the grouplist when setgid() is called. This was fixed in
     suexec earlier, but the main httpd code missed the change.
     [Rob Saccoccio <robs@InfiniteTechnology.com>] PR#2579

  *) Add recognition of .tgz as a gzipped tarchive.
     [Bertrand de Singly <bertrand.de-singly@polytechnique.fr>] PR#2364

  *) mod_include's fsize/flastmod should allow only relative paths, just
     like "include file". [Jaroslav Benkovsky <benkovsk@pha.pvt.cz>]

  *) OS/2: Add support for building loadable modules using DLLs.
     [Brian Havard]

  *) Add iconsdir, htdocsdir, and cgidir to config.layout.
     [Wilfredo Sanchez]

  *) Fix minor but annoying bug with the test for Configuration.tmpl
     being newer than Configuration so that it is less likely to fail
     when using APACI and shadow sources. [Wilfredo Sanchez]

  *) PORT: Add initial support for Mac OS (versions 10.0 and
     greater). Use Mac OS X Server layout for now. Clean up dyld code
     in unix/os.c, and don't install the dyld error handlers, which
     are no longer needed in Mac OS. [Wilfredo Sanchez]

  *) Rename Rhapsody layout to "Mac OS X Server". Change install
     locations to appropriate ones for user-built (as opposed to
     system) installs. [Wilfredo Sanchez]

  *) Modify mod_autoindex's handling of AddDescription so that the
     behaviour matches the documentation. [Ken Coar] PR#1898, 3072.

  *) Add functionality to the install-bindist.sh script created by
     binbuild.sh to use tar when copying distribution files to the
     serverroot. This allows upgrading an existing installation
     without nesting the new distribution in the old.

     install-bindist.sh now detects the local perl5 path to install
     apxs and dbmmanage with proper path to perl interpreter.

     Add an install-binsupport target which copies the source files
     for apxs and dbmmanage to bindist to allow these scripts to
     be properly installed relative to the destination serverroot.
     [Randy Terbush, Covalent Technologies, randy@covalent.net]

  *) Fix intermittent SEGV in ap_proxy_cache_error() in
     src/modules/proxy_util.c where a NULL filepointer and
     temporary filename were closed and unlinked.
     [Graham Leggett <minfrin@sharp.fm>,
     Tim Costello <tjcostel@socs.uts.edu.au>] PR#3178

  *) Fix inconsistent error messages reported by mod_proxy.
     [Graham Leggett <minfrin@sharp.fm>]

  *) OS/2: Fix terminating CGIs that aren't compiled by EMX GCC when a
     connection is aborted. [Brian Havard]

  *) Force the LANG envariable to the known state of "C" so that we
     have assurance about how string manipulators (e.g., tr) will
     function. [Ken Coar] PR#1630

  *) Add a directive to allow customising of the tracking cookie name.
     [Ken Coar] PR#2921, 4303

  *) Add "force-no-vary" envariable to allow servers to work around
     clients that choke on "Vary" fields in the response header.
     [Ken Coar, Dmitry Khrustalev <dima@zippy.machaon.ru>] PR#4118

  *) Fixed a bug in mod_dir that causes a child process will infinitely
     recurse when it attemps to handle a request for a directory wnd the
     value of the DirectoryIndex directive is a single dot. Also likely
     to happen for anyother values of DirectoryIndex that will map back
     to the same directory. The handler now only considers regular files
     as being index candidates. No PR#s found.
     [Raymond S Brand <rsbx@rsbx.net>]

  *) Ease configuration debugging by making TestCompile fall back to
     using "make" if the $MAKE variable is unset [Martin Kraemer]

  *) Fixed the ServerSignature directive to work as documented.
     [Raymond S Brand <rsbx@rsbx.net>] PR#4248

  *) Add "opt" (SysV-style) layout to config.layout. [Raymond S Brand
     <rsbx@rsbx.net>]

  *) Add APACI --without-execstrip option which can be used to disable the
     stripping of executables on installation. This is very important for DSO
     and debugging situations. [Ralf S. Engelschall]

  *) Add support for OS/2 (case insenstive filesystem, .exe suffix, etc)
     to APACI files and related scripts.
     [Yitzchak Scott-Thoennes <sthoenna@efn.org>, Ralf S. Engelschall] PR#4269

  *) Add support for standalone mode in TPF
     [Joe Moenich <moenich@us.ibm.com>]

  *) Fix number of bytes copied by read_connection() in src/support/ab.c
     [Jim Cox <jc@superlink.net>] PR#4271

  *) Fix special RewriteCond "-s" pattern matching.
     [Bob Finch <bob@nas.com>]

  *) Fix value quoting in src/Configure script for ap_config_auto.h
     [Paul Sutton <paul@awe.com>]

  *) Make sure RewriteLock can be used only in the global context, (i.e.
     outside of any <VirtualHost> sections) because it's a global facility of
     the rewrite engine. [Ralf S. Engelschall]

  *) Fix the ownership delegation for proxy directory under `make install'.
     [Ralf S. Engelschall]

  *) APACI would not correctly build suexec. [Maria Verina
     <mariav@icgeb.trieste.it>] PR#4260

  *) mod_mime_magic passed only the first 4k of a file to
     uncompress/gzip, but those tools sometimes do not produce
     any output unless a sufficient portion of the compressed
     file is input. Change to pass the entire file -- but
     only read 4k of output.
     [Marcin Cieslak <saper@system.pl>] PR#4097

  *) "IndexOptions None" generated extra spaces at the end of each
     line. [inkling@firstnethou.com] PR#3770

  *) The "100 Continue" response wasn't being sent after internal
     redirects. [Jose KAHAN <kahan@w3.org>] PR#3910, 3806, 3575

  *) When padding the name with spaces for display, mod_autoindex would
     count &, <, and > in their escaped width, messing up the display.
     [Dean Gaudet] PR#4075, 3758

  *) PORT: fixed a compilation problem on NEXT.
     [Jacques Distler <distler@golem.ph.utexas.edu>] PR#4130

  *) r->request_time wasn't being set properly in certain error conditions.
     [Dean Gaudet] PR#4156

  *) PORT: deal with UTS compiler error in http_protocol.c
     [Dave Dykstra <dwd@bell-labs.com>] PR#4189

  *) Add ap_vrprintf() function. [John Tobey <jtobey@banta-im.com>] PR#4246

  *) Fix the mod_mime hash table to work properly with locales other
     than C. [Dean Gaudet] PR#3427

  *) Fix a memory leak which is exacerbated by certain configurations.
     [Dean Gaudet] PR#4225

  *) Prevent clobbering saved IFS values in APACI. [Jim Jagielski]

  *) Fix buffer overflows in ap_uuencode and ap_uudecode pointed out
     by "Peter 'Luna' Altberg <peter@altberg.nu>" and PR#3422
     [Peter 'Luna' Altberg <peter@altberg.nu>, Ronald Tschalär]

  *) Make {Set,Unset,Pass}Env per-directory instead of per-server.
     [Ben Laurie]

  *) Correct an apparent typo: on the Windows and MPE platforms, the
     htpasswd utility was limiting passwords to only 8 characters.
     [Ken Coar]

  *) EBCDIC platforms: David submitted patches for two bugs in the
     MD5 digest port for EBCDIC machines:
     a) the htdigest utility overwrote the old contents of the digest file
     b) the Content-MD5 header value (ContentDigest directive) was wrong
     when the returned file was not converted from EBCDIC, but was a
     binary (e.g., image file) in the first place.
     [David McCreedy <mccreedy@us.ibm.com>]

  *) support/htpasswd now permits the password to be specified on the
     command line with the '-b' switch. This is useful when passwords
     need to be maintained by scripts -- particularly in the Win32
     environment. [Ken Coar]

  *) Win32: Win32 multiple services patch. Added capability to install and
     run multiple copies of apache as individual services.

     Example 1:
     apache -n apache1 -i -f c:/httpd.conf
        Installs apache as service 'apache1' and associates c:/httpd.conf
        with that service.
     net start apache1
        Starts apache1 service.
     net stop apache1
        Stops apache1 service

     Example 2:
     apache -n apache2 -i
        Installs apache as service 'apache2'. httpd.conf is located under
        the default server root (/apache/conf/httpd.conf).
     net start apache2
        Starts apache2 service.

     Example 3:
     apache -n apache3 -i -d c:/program files/apache
        Install apache as service 'apache3' and sets server root to
        c:/program files/apache.

     Example 4:
     apache -n apache2 -k restart
        Restart apache2 service

     [Keith Wannamaker, Ken Parzygnat, Bill Stoddard]

  *) Correct the signed/unsigned character handling for the MD5 routines;
     mismatches were causing compilation problems with gcc -pedantic and
     in the TPF cross-compilation. [Ken Coar]

  *) OS/2: Rework CGI handling to use spawn*() instead of fork/exec, achieving
     a roughly 5 fold speed up. [Brian Havard]

  *) proxy ftp: instead of using the hardwired string "text/plain" as
     a fallback type for files served by the ftp proxy, use the
     ap_default_type() function to determine the configured type.
     This allows for special configurations like
        <Directory proxy:ftp://some.host>
        DefaultType gargle/blurb
        </Directory>
     Additionally, add the Content-Encoding: header to FTP proxy replies
     when the encoding is defined (by the AddEncoding directive).
     Because it was missing, it was almost impossible to browse compressed
     files using the FTP proxy (works now perfectly in Communicator).
     The ftp proxy now also returns the Date: and Server: header lines (if not
     much else... This code is "somewhat" broken) like normal requests do.
     [Martin Kraemer]

  *) Be more smart in APACI's configure script when determining the UID/GID
     for User/Group directives and use the determined UID/GID to initialize
     the permissions on the proxycachedir.
     [Dirk-Willem van Gulik, Ralf S. Engelschall]

  *) Changed the forking-prior-to-cleanup in the proxy module to first
     check wether it actually needs to collect garbage. This reduces
     the number of fork()s from one/request to just the odd one an hour.
     [Dirk-Willem van Gulik]

  *) Added proxy, auth and header support to src/support/ab.c. Added a
     README file to src/support/
     [Dirk-Willem van Gulik]

  *) Don't hard-code the path to AWK in --shadow bootstrapping Makefile.
     [Ralf S. Engelschall] PR#4050

  *) Add support for DSO module compilation on BSD/OS 3.x.
     [Randy Terbush, Covalent Technologies]

  *) Fix sed-substitutions in `make install': path elements like `httpd/conf'
     (for instance from an APACI configure --sysconfdir=/etc/httpd/conf
     option) were substituted with $(TARGET).conf, etc. Same for other strings
     with dots where the dot wasn't matched as plain text.
     [Ralf S. Engelschall]

  *) PORT: Add support for FreeBSD 4.x [Ralf S. Engelschall]

  *) Fix verbose output of APACI configure (option -v)
     [Martin Kraemer, Ralf S. Engelschall]

Changes with Apache 1.3.6

  *) Removed new PassAllEnv code due to DSO problems. [Lars Eilebrecht]

Changes with Apache 1.3.5 [not released]

  *) M_INVALID needed a value within the scope of METHODS so that unknown
     methods can be access controlled. [Roy Fielding] PR#3821

  *) Added PassAllEnv; makes server's entire environment available
     to CGIs and SSIs executed within directive's scope. [Ken Coar]

  *) ap_uuencode() always added two trailing '='s and encoding of
     8 bit characters on a machine with signed char may produced
     incorrect results. Additionally ap_uuencode() should now
     work correctly on EBCDIC platforms.
     [Ronald Tschalär <ronald@innovation.ch>] PR#3411

  *) WIN32: Binary installer now runs the configuration DLL before
     the reboot prompt (which is only given if MSVCRT.DLL system
     DLL is new or updated). This should avoid the configuration
     directory being empty after installation. [Paul Sutton]
     PR#3767, 3800, 3827, 3850, 3900, 3953, 3988

  *) WIN32: Binary installer now creates Start menu options to start
     and stop Apache as a console application and to uninstall
     the Apache service on NT. [Paul Sutton] PR#3741

  *) WIN32: Apache.exe now contains an icon. [Paul Sutton]

  *) PORT: Switch back to using fcntl() locking on Linux -- instabilities
     have been reported with flock() locking (probably related to kernel
     version). [Dean Gaudet] PR#2723, 3531

  *) Using APACI, the main config file (usually httpd.conf) was
     not being adjusted as $(TARGET).conf. [Wilfredo Sanchez
     <wsanchez@apple.com>]

  *) PORT: AIX does not require the SHARED_CODE "hack"
     [Ryan Bloom <rbb@raleigh.ibm.com>]

  *) Set-Cookie headers were being doubled up for some CGIs by the O(n^2)
     avoidance code added in 1.3.3.
     [Dean Gaudet, Jeff Lewis <lewis@stanford.edu>] PR#3872

  *) ap_isxdigit was somehow neglected when adding the ap_isfoo() macros
     for 8-bit safeness. [Dean Gaudet]

  *) PORT: Use -fPIC instead of -fpic on Solaris and SunOS for compiling DSOs
     because SPARCs have a small machine-specific maximum size for the Global
     Offset Table which is often exceeded when compiling one of the larger
     third-party modules with Apache. [Peter Urban <Peter.Urban@epfl.ch>] PR#3977

  *) Move the directive `ExtendedStatus' in httpd.conf-dist-win _after_ the
     DSO/DLL section because it's a directive from mod_status and isn't
     available before the DLL of mod_status is loaded.
     [Martin POESCHL <mpoeschl@gmx.net>] PR#3936

  *) SECURITY: Fix a bug in the calculation of the buffer size for the line
     continuation facility in Apache's configuration files which could
     lead to a buffer overflow situation.
     [Thomas Devanneaux <Thomas.Devanneaux@enst.fr>] PR#3617

  *) Make documentation and error messages of APACI's --activate-module=FILE
     option more clear. [Jan Wolter <janc@wwnet.net>] PR#3995

  *) Fix the gcc version check (for enabling the `inline' facility) to
     really support all future gcc versions >= 2.7 until we know more.
     [John Tobey <jtobey@banta-im.com>] PR#3983

  *) Let APACI's configure script correctly complain for unknown --enable-XXX
     and --disable-XXX options. [Ralf S. Engelschall] PR#3958

  *) Link the shared core bootstrap program (``Rule SHARED_CORE=yes'') also
     against libap.a and use its ap_snprintf() instead of sprintf() to avoid
     possible buffer overflows. [Ralf S. Engelschall]

  *) Remove no longer used non-API function ap_single_module_init().
     [Ralf S. Engelschall]

  *) Add Apple's Mac OS X Server Layout "Rhapsody" to config.layout.
     [Wilfredo Sanchez]

  *) Add cgidir, htdocsdir, iconsdir variables to Makefile.tmpl in order
     to make platform installations easier. [Wilfredo Sanchez]

  *) In configure, do not append the target name to the directory path if
     the path already contains "apache". [Ralf S. Engelschall]

  *) SIGPIPE is now ignored by the server core. The request write routines
     (ap_rputc, ap_rputs, ap_rvputs, ap_rwrite, ap_rprintf, ap_rflush) now
     correctly check for output errors and mark the connection as aborted.
     Replaced many direct (unchecked) calls to ap_b* routines with the
     analogous ap_r* calls. [Roy Fielding]

  *) Enhanced mod_rewrite's mapfile handling: The in-core cache for text and
     DBM format mapfiles now uses a 4-way hash table with LRU functionality.
     Furthermore map lookups for non-existent keys are now cached as well.
     Additionally "txt" maps are now parsed with simple string functions
     instead of using ap_pregcomp(). As a side effect a bug that prevented
     the usage of keys containing the "," character was fixed.
     The changes drastically improve the performance when large rewrite maps
     are in use.
     [Michael van Elst <mlelstv@serpens.swb.de>, Lars Eilebrecht] PR#3160

  *) Added ap_sub_req_method_uri() for doing a subrequest with a method
     other than GET, and const'd the definition of method in request_rec.
     [Greg Stein]

  *) Use proper pid_t type for saving PIDs in alloc.c. [John Bley]

  *) Replaced use of WIN32 define with HAVE_DRIVE_LETTERS to indicate
     when the OS allows a DOS drive letter within pathnames. [Brian Havard]

  *) Add %V to mod_log_config, this logs the hostname according to the
     UseCanonicalName setting (this is the pre-1.3.4 behaviour of
     %v). Useful for mass vhosting. [Tony Finch <dot@dotat.at>]

  *) Add support for \n and \t to mod_log_config, can be used to produce
     more reliable logs with multiline entries. [Tony Finch <dot@dotat.at>]

  *) Fixed a few compiler nits. [John Bley <jbb6@acpub.duke.edu>]

  *) Added informative error messages for failed munmap() and fseek() calls
     in http_core.c. [John Bley, Roy Fielding]

  *) Added some informative error messages for some failed malloc()
     calls. [John Bley <jbb6@acpub.duke.edu>, Jim Jagielski]

  *) OS/2 ap_os_canonical_filename()'s behaviour is improved: ap_assert()
     is removed. This allows <Directory proxy:*> directives to work and
     prevents invalid requests from killing the process.
     [Brian Havard <brianh@kheldar.apana.org.au>]

  *) Reorganised FAQ document.
     [Joshua Slive <slive@finance.commerce.ubc.ca>] PR#2497

  *) src/support/: The ApacheBench benchmark program was overhauled by
     David N. Welton: you can now have it generate an HTML TABLE, presumably
     for integration into other HTML sources. David updated the ab man page
     as well and added some missing descriptions. Thanks!
     [David N. Welton <davidw@prosa.it>]

  *) Win32: The filename validity checker now allows filenames containing
     characters in the range 0x80 to 0xff (for example accented characters).
     [Paul Sutton] PR#3890

  *) Added conditional logging based upon environment variables to
     mod_log_config. mod_log_referer and mod_log_agent
     are now deprecated. [Ken Coar]

  *) Allow apache acting as a proxy server to relay the real
     reason of a failure to a client rather than the "internal
     server error" it does currently. The general exposure mechanism
     can be triggered by any module by setting the "verbose-error-to"
     note to "*"; this allows more than just proxy errors to be exposed.
     [Cliff Skolnick, Roy Fielding, Martin Kraemer] Related to PR#3455, 4086

  *) Moved man pages for ab and apachectrl to section 8.
     [Wilfredo Sanchez, Roy Fielding]

  *) Added -S option to install.sh so that options can be passed to
     strip on some platforms. [Ralf S. Engelschall, Wilfredo Sanchez]

  *) Tweak modules Makefile generated by Configure so that it handles
     the test case of no modules being selected. [chaz@reliant.com]

  *) Added a <LimitExcept method ...> sectioning directive that allows
     the user to assign authentication control to any HTTP method that
     is *not* given in the argument list; i.e., the logical negation
     of the <Limit> directive. This is particularly useful for controlling
     access on methods unknown to the Apache core, but perhaps known by
     some module or CGI script. [Roy Fielding, Tony Finch]

  *) Prevent apachectl from complaining if the PIDFILE exists but
     does not contain a process id, as might occur if the server is
     being rapidly restarted. [Wilfredo Sanchez]

  *) Win32: Add global symbols missing from ApacheCore.def. [Carl Olsen]

  *) Entity tag comparisons for If-Match and If-None-Match were not being
     performed correctly -- weak tags might cause false positives. Also,
     strong comparison wasn't properly enforced in all cases.
     [Roy Fielding, Ken Coar, Dean Gaudet] PR#2065, 3657

  *) OS/2: Supply OS/2 error code instead of errno on semaphore errors.
     [Brian Havard]

  *) Work around a bug in Lynx regarding its sending "Negotiate: trans"
     even though it doesn't understand TCN. [Koen Holtman, Roy Fielding]

  *) Added ap_size_list_item(), ap_get_list_item(), and ap_find_list_item()
     to util.c for parsing an HTTP header field value to extract the next
     list item, taking into account the possible presence of nested comments,
     quoted-pairs, and quoted-strings. ap_get_list_item() also removes
     insignificant whitespace and lowercases non-quoted tokens.
     [Roy Fielding] PR#2065

  *) proxy: The various calls to ap_proxyerror() can return HTTP/1.1 status
     code different from 500. This allows the proxy to, e.g., return
     "403 Forbidden" for ProxyBlock'ed URL's. [Martin Kraemer] Related to PR#3455

  *) Fix ordering of language variants for the case where the traditional
     negotiation algorithm is being used with multiple language variants
     and no Accept-Language. [James Treacy <treacy@debian.org>] PR#3299, 3688

  *) Do not round the TCN quality calculation to 5 decimal places,
     unlike RFC 2296, because the calculation might need 12 decimal places
     to get the right result. [Roy Fielding]

  *) Remove unused code to disable transparent negotiation when
     negotiating on encoding only, as we now handle encoding too
     (though this is nonstandard for TCN), remove charset=ISO-8859-1
     fiddle from the fiddle-averse RVSA comparison, and fix bugs in
     some debugging statements within mod_negotiation. [Koen Holtman]

  *) Fixed a rare memory corruption possibility in mod_dir if the index
     file is negotiable and no acceptable variant can be found.
     [Dean Gaudet, Roy Fielding, Martin Kraemer]

  *) Win32: Add new config directive, ScriptInterpreterSource, to enable
     searching the Win32 registry for script interpreters.
     [Bill Stoddard]

  *) Win32: The compiled-in default filename for the error log is now
     error.log, which matches the default in the distributed httpd.conf.
     [Paul Sutton]

  *) Win32: Any error messages from -i or -u command line options are now
     displayed on the console output rather than sent to the error log.
     Also the "Running Apache..." message is not output unless Apache is
     going to serve requests. [Paul Sutton]

  *) Rework the MD5 authentication scheme to use FreeBSD's algorithm,
     and use a private significator ('$apr1$') to mark passwords as
     being smashed with our own algorithm. Also abstract the password
     checking into a new ap_validate_password() routine. [Ken Coar]

  *) Win32: The filename validity checker now allows "COM" but refuses
     access to "COM1" through "COM4". This allows filenames such
     as "com.name" to be served. [Paul Sutton] PR#3769.

  *) BS2000: Adapt to the new ufork() system call interface which will
     make subtasking easier on the OSD/POSIX mainframe environment.
     [Martin Kraemer]

  *) Add a compatibility define for escape_uri() -> ap_escape_uri() to
     ap_compat.h. [David White <david@persimmon.com>] PR#3725

  *) Make NDBM file suffix determination for mod_rewrite more accurate, i.e.
     use `.db' instead of `.pag' not only for FreeBSD, but also when
     the NDBM library looks like Berkeley-DB based.
     [Ralf S. Engelschall] PR#3773

  *) Add ability to handle DES or MD5 authentication passwords.
     [Ryan Bloom <rbb@Raleigh.IBM.Com>]

  *) Fix O(n^2) memory consumption in mod_speling. [Dean Gaudet]

  *) SECURITY: Avoid some buffer overflow problems when escaping
     quoted strings. (This overflow was on the heap and we believe
     impossible to exploit.) [Rick Perry <perry@ece.vill.edu>]

  *) Let src/Configure be aware of CFLAGS options starting with plus
     signs as it's the case for the HP/UX compiler.
     [Doug Yatcilla <yatcilda@umdnj.edu>] PR#3681

  *) Remove the hard-wire of TAR=tar (we now check for gtar and gnutar first)
     and check to see if the tar we wind up with supports '-h'.
     [Jim Jagielski] PR#3671

  *) A consistent and conservative style for all shell scripts has been
     implemented. Basically, all shell string tests use the traditional
     hack of 'if [ "x$var" != "x" ]' or 'if [ "x$var" = "xstring" ]'
     to protect against bare null variable strings (ie: wrapping both
     sides with double quotes and prepending 'x'). 'x' was chosen
     because it's more universal and hopefully easier for old shell
     prgrammers, as well as being easier to search for in 'vi' (/x\$) :)
     [Jim Jagielski]

  *) The status module now prints out both the main server generation as
     well as the generation of each process. Also, the vhost info is
     printed with '?notable'. [Jim Jagielski]

  *) Move src/main/md5c.c to src/ap/ap_md5c.c; it's httpd-neutral
     and this makes its functions available to things in src/support.
     [Ken Coar]

Changes with Apache 1.3.4

  *) Renamed macros status_drops_connection to ap_status_drops_connection
     and vestigial scan_script_header to ap_scan_script_header_err,
     mostly for aesthetic reasons. [Roy Fielding]

  *) The query switch "httpd -S" didn't exit after showing the
     vhost settings. That was inconsistent with the other query functions.
     [Martin Kraemer]

  *) Moved the MODULE_MAGIC_COOKIE from before the versions and
     filename to the end of the STANDARD_MODULE_STUFF. Its
     presence at the beginning prevented reporting of the filename
     for modules compiled before 1 January 1999. [Ken Coar]

  *) SECURITY: ap_os_is_filename_valid() has been added to Win32
     to detect and prevent access to special DOS device file names.
     [Paul Sutton, Ken Parzygnat]
     
  *) WIN32: Created new makefiles Makefile_win32.txt (normal build)
     and Makefile_win32_debug.txt (debug build) that work on Win95.
     Run each of the following from the src directory:
        nmake /f Makefile_win32.txt # compiles normal build
        nmake /f Makefile_win32.txt install # compiles and installs
        nmake /f Makefile_win32.txt clean # removes compiled junk
        nmake /f Makefile_win32_debug.txt # compiles debug build
        nmake /f Makefile_win32_debug.txt install
        nmake /f Makefile_win32_debug.txt clean
     [Roy Fielding]

  *) Added binbuild.sh and findprg.sh helpers to make it easier for us
     to build binary distributions. [Lars Eilebrecht]

  *) IndexOptions SuppressColumnSorting only turned off making
     the column headers anchors; you could still change the display
     order by manually adding a '?N=A' or similar query string to the
     URL. Now SuppressColumnSorting locks in the sort order so
     it can't be overridden this way. [Ken Coar]

  *) Added IndexOrderDefault directive to supply a default sort order
     for FancyIndexed directory listings. [Ken Coar] PR#1699

  *) Change the ap_assert macro to a variant that works on all platforms.
     [Richard Prinz <richard.prinz@cso.net>] PR#2575

  *) Make sure under ELF-based NetBSD (now) and OpenBSD (future) we don't
     search for an underscore on dlsym() (as it's already the case
     for FreeBSD 3.0). [Todd Vierling <tv@pobox.com>] PR#2462
  
  *) Small fix for mod_env.html: The module was documented as to be _not_
     compiled into Apache per default, although it _IS_ compiled into
     Apache per default. [Sim Harbert <sim@mindspring.com>] PR#3572

  *) Instead of fixing a bug in the generation procedure for config.status (a
     backslash was missing) we remove the bug together with it's complete
     context because the special cases of the past can now no longer occur
     because of the recent magic for the --with-layout default.
     [Ralf S. Engelschall] PR#3590
 
  *) Make top-level Makefile aware of a parallel build procedures (make -j) by
     making sure the src/support/ tools are _forced_ to be build last (they
     depend on other libraries).
     [Markus Theissinger <markus.theissinger@gmx.de>]

  *) Fix installation procedure: Now that os-inline.c is actually used (a
     recently fixed bug prevented this) we need to also install os-include.c
     in addition to os.h into the PREFIX/include/ location or building of
     module DSOs with APXS fails. [Ralf S. Engelschall] PR#3527

  *) Added MODULE_MAGIC_COOKIE as the first field in a module structure to
     allow us to distinguish between a garbled DSO (or even a file which isn't
     an Apache module DSO at all) and a DSO which doesn't match the current
     Apache API. [Ralf S. Engelschall] PR#3152
 
  *) Two minor enhancements to mod_rewrite: First RewriteRule now also
     supports the ``nocase|NC'' flag (as RewriteCond already does for ages) to
     match case insensitive (this especially avoids nasty patterns like
     `[tT][eE][sS][tT]'). Second two additional internal map functions
     `escape' and `unescape' were added which can be used to escape/unescape
     to/from hex-encodings in URLs parts (this is especially useful in
     combination with map lookups).
     [Magnus Bodin, Ian Kallen, Ralf S. Engelschall]

  *) Renamed the macro escape_uri() to ap_escape_uri() which was
     forgotten (because it was a macro) in the symbol renaming process.
     [Ralf S. Engelschall]

  *) Fix some inconsistencies related to the scopes of directives. The only
     user visible change is that the directives `UseCanonicalName' and
     `ContentDigest' now use the (more correct) `Options' scope instead of
     (less correct) `AuthConfig' scope. [Ralf S. Engelschall]

  *) Using DSO, the Server token was being mangled. Specifically, the
     module's token was being added first before the Apache token. This
     has been fixed. [Jim Jagielski]

  *) Major overhaul of mod_negotiation.c, part 2.
     - properly handle "identity" within Accept-Encoding.
     - allow encoded variants in RVSA negotiation and let them appear in
       the Alternates field using the non-standard "encoding" tag-list.
     - fixed both negotiation algorithms so that an explicitly accepted
       encoding is preferred over no encoding if "identity" is not
       included within Accept-Encoding.
     - added ap_array_pstrcat() to alloc.c for efficient concatenation
       of large substring sequences.
     - replaced O(n^2) memory hogs in mod_negotiation with ap_array_pstrcat.
     [Roy Fielding]

  *) Major overhaul of mod_negotiation.c, part 1.
     - cleanups to mod_negotiation comments and code structure
     - made compliant with HTTP/1.1 proposed standard (rfc2068) and added
       support for everything in the upcoming HTTP/1.1
       revision (draft-ietf-http-v11-spec-rev-06.txt).
         - language tag matching also handles tags with more than 2
           levels like x-y-z
         - empty Accept, Accept-Language, Accept-Charset headers are
           processed correctly; previously an empty header would make all
           values acceptable instead of unacceptable.
         - allowed for q values in Accept-Encoding
     - added support for transparent content negotiation (rfc2295 and
       rfc2296) (though we do not implement all features in these drafts,
       e.g. no feature negotiation). Removed old experimental version.
     - implemented 'structured entity tags' for better cache correctness
       (structured entity tags ensure that caches which can deal with Vary
       will (eventually) be updated if the set of variants on the server
       is changed)
         - this involved adding a vlist_validator element to request_rec
         - this involved adding the ap_make_etag() function to the global API
     - modified guessing of charsets used by Apache negotiation algorithm
       to guess 'no charset' if the variant is not a text/* type
     - added code to sort multiviews variants into a canonical order so that
       negotiation results are consistent across backup/restores and mirrors
     - removed possibility of a type map file resolving to another type map
       file as its best variant
     [Koen Holtman, Roy Fielding, Lars Eilebrecht] PR#3451, 3299, 1987

  *) RFC2396 allows the syntax http://host:/path (with no port number)
     but the proxy disallowed it (ap_proxy_canon_netloc()).
     [David Kristol <dmk@bell-labs.com>] PR#3530

  *) When modules update/modify the file name in the configfile_t structure,
     syntax errors will report the updated name, not the original one.
     [Fabien Coelho <coelho@cri.ensmp.fr>] PR#3573

  *) Correct some filename case assumptions from WIN32 to
     CASE_BLIND_FILESYSTEM. [Brian Havard <brianh@kheldar.apana.org.au>]

  *) For %v log ServerName regardless of the UseCanonicalName
     setting (similarly for %p). [Dean Gaudet]

  *) Configure was initializing the variables $OSDIR, $INCDIR and $SHELL
     rather late (too late for some invocations of TestCompile).
     This improves the make environment available to TestCompile and
     the *.module scripts. [Martin Kraemer]

  *) The hashbang emulation code in ap_execve.c would interpret
     #!/hashbang/scripts correctly, but failed to fall back to a
     standard shell for scripts which did NOT start with #!
     Now SHELL_PATH is started in these cases. [Martin Kraemer]

  *) PORT: Added the Cyberguard V2 port [Richard Stagg <stagg@lentil.org>]
     PR#3336

  *) Update APXS manual page: some -q option arguments were missing
     and another was incorrect. [Mark Anderson <mda@discerning.com>] PR#3553

  *) Cleanup the command line options: `-?' was documented to show
     the usage list but does it with an error because `?' is not a valid
     command. OTOH a lot of users expect `-h' to print such a usage list and
     instead are annoyed for ages by our huge unreadable list of directives.
     So we now changed the command line options this way:
     1. `-L' => `-R'
        Intent: we need `-L' to be free, and `-R' for the DSO run-time path is
        very similar to the popular linker option.
     2. `-h' => `-L'
        Intent: while -l gives the small list of modules, -L now gives the
        large list of directives implemented by these modules. This is also
        consistent with -v (short version info) and -V (large version info).
     3. `-?' => `-h'
        Intent: it's now the expected option ;-)
     The manual page was adjusted accordingly.
     [Ralf S. Engelschall] PR#2714

  *) Fixed problem of fclose() on an unopened file in suexec if LOG_EXEC
     wasn't defined. [Rick Franchuk <rickf@transpect.net>]

  *) Removed recently introduced bugs and disfigurements in APACI:
     o fixed argument line processing: using $args was broken: It was not
       initialized and using args="$args $apc_option" and even args="$args
       \"$apc_option\"" fails in the second processing round for any arguments
       containing whitespaces. The only correct way is to use the construct
       "$@" (but not possible here) or iterate _both_ times over the implicit
       argument line (no argument to for-loop) which is what we now use.
     o make --with-layout=Apache the default without creating
       redundancy (copying the --with-layout block in the argument parsing
       loop). We achieve this by using the "$@" construct together with the
       `set' command to prepend --with-layout=Apache to the command line in
       case --with-layout is not used.
     o fixed auto-suffix handling now that config.layout exists.
       Paths which are auto-suffixed are marked with a trailing plus sign in
       config.layout and every path now can be marked this way (not only the
       four paths for which we do it currently). Additionally the suffix is
       no longer a static one. Instead it's now `/<target>' where <target> is
       the argument of the --target option or per default `httpd'.
     o allow also tabs (and only spaces) where we match whitespaces
     o various fixes and cleanups related to used shell coding style
     o made Jim happy by replacing `Written by' with `Initially written by' ;-)
     o trimmed output of --help to fit into 80 columns
     [Ralf S. Engelschall]

  *) Added two new core API functions, ap_single_module_configure() and
     ap_single_module_init(), which are now used by mod_so to configure a module
     after loading. [Ralf S. Engelschall]

  *) PORT: Add defines for USE_FLOCK_SERIALIZED_ACCEPT and
     SINGLE_LISTEN_UNSERIALIZED_ACCEPT to NetBSD/OpenBSD section
     of ap_config.h to allow serialized accept for multiport listens.
     [Roy Fielding, Curt Sampson] PR#3120

  *) PORT: Fixed a misplaced #endif for NetBSD/OpenBSD section
     of ap_config.h that would skip several defines if DEFAULT_GROUP
     was overridden. [Roy Fielding]

  *) PORT: The I86 version of DGUX has support for strncasecmp and
     strcasecmp, so allow it in ap_config.h. [Amiel Lee Yee] PR#3247

  *) Fix ordering of definitions in ap_config.h so that ap_inline is
     defined before it might be used. [Victor Khimenko]

  *) PORT: Add Dynamic Shared Object (DSO) support for BSDI (v4.0).
     [Tom Serkowski <tks@bsdi.com>] PR#3453

  *) Make generation of src/Configuration.apaci more robust: It failed to
     differenciate between modules when one module name was a postfix of
     another (e.g. cgi vs. fastcgi). We now check for mod_XXX, libXXX and even
     just XXX (think about totally non-standard names like "apache_ssl", too).
     [Ralf S. Engelschall] PR#3380

  *) In src/Configure remove the SERVER_SUBVERSION support (already deprecated
     since 1.3b7) and make whitespace handling more robust (it failed horrible
     when whitespaces were present in the arguments of -D options).
     [Ralf S. Engelschall] PR#3240

  *) Add APACI --shadow=DIR variant (in addition to --shadow). This now first
     creates an external package shadow tree in DIR before the local build
     shadow tree is generated under DIR. This way one can have the extracted
     Apache distribution tree read-only on NFS or CDROM and still build Apache
     from these sources. An automatically triggered VPATH-like mechanism is
     provided through the TOP variable, too.
     [Ralf S. Engelschall, Wilfredo Sanchez <wsanchez@apple.com>]

  *) Fix negotiation so that a Vary response header is correctly
     generated when, for a particular dimension, variants only vary
     in having or not having a value for that dimension. [Paul Sutton]

  *) Fix negotiation so that we prefer an encoded variant over an
     unencoded variant if the user-agent explicitly says it can
     accept that encoding. Previously we always preferred the unencoded
     variant.
     [Paul Ausbeck <paula@alumni.cse.ucsc.edu>, Paul Sutton] PR#3447
 
  *) Fix APXS tool: query variables LIBS_SHLIB and TARGET were not recognized
     and the usage page was inconsistent with the functionality and manpage.
     [Ralf S. Engelschall]

  *) Allow special options -Wc,xxx and -Wl,xxx on APXS compile/link command.
     They can occur multiple times and their arguments (`xxx') are passed AS
     IS to the compiler/linker command. [Ralf S. Engelschall]

  *) Fixed possible (but harmless in practice) bug in the DBM lookup
     procedure of mod_rewrite: very long keys were truncated.
     [Ralf S. Engelschall]

  *) Added a generic --with-layout=[FILE:]ID option. ID here is a layout
     identifier, currently "Apache" and "GNU" are pre-defined in the file
     config.layout. Custom layouts are possible by using FILE:ID as the
     argument where the layout ID is taken from FILE.

     The config.layout file consists of <Layout ID>..</Layout> sections
     where inside those sections "path_variable: path_value" pairs can be
     specified. These lines are converted to path_variable='path_value'.

  *) Add a DefaultLanguage directive so that files missing a language
     extension (e.g., .fr, .de) can be labelled as being some other
     default language. DefaultLanguage can appear in <Directory> and
     <Files> containers as well as .htaccess files. [Paul Sutton]
     PR#1180

  *) Fix TARGET configuration when configuring and installing using
     APACI configure. TARGET now defines the basename of the configuration
     file, startup script, manual page, etc. log_error_core() now reports
     the server binary name given by argv[0]. TARGET can now also be defined
     with --target=TARGET parameter passed to APACI configure.
     [Ralf Engelschall, Randy Terbush]

  *) mod_include.c:handle_perl() now properly tests for OPT_INCNOEXEC
     rather than OPT_INCLUDES [Rainer Schoepf <schoepf@uni-mainz.de>]

  *) ap_md5_binary() was using sprintf() rather than a table lookup
     to convert binary bytes to hex digits.
     [Ronald Tschalär <ronald@innovation.ch>] PR#3409

  *) Fix SEGV in TCN negotiation if no variants are acceptable.
     [Martin Plechsmid <plechsmi@karlin.mff.cuni.cz>] PR#1987

  *) API: ap_exists_config_define() function is now "public" [Doug MacEachern]

  *) Fix documentation of `Action' directive: It can activate a CGI script
     when either a handler or a MIME content type is triggered by the request.
     [Andrew Pimlott <pimlott@math.harvard.edu>] PR#3340

  *) Document the `add' command of `dbmmanage' in `dbmmanage.1' manpage.
     [David MacKenzie <djm@uu.net>] PR#3394

  *) Ignore a "ErrorDocument 401" directive with a full URL and write a
     notice to the error log. It is not possible to send a 401 response
     and a redirect at the same time. [Lars Eilebrecht]

  *) Fallback to native compilers for IRIX-32 platform. It seems that
     a gcc 2.8.1 compiled apache is logging client addresses with all
     bits set (255.255.255.255). This is the second such problem caused
     by gcc 2.8.1 compiler. The first being broken semaphore locking.
     [Randy Terbush]

  *) Updated mime.types to reflect current Internet media types
     and include a URL to the registry.
     [Manoj Kasichainula, Roy Fielding] PR#2380, 2286, 2246

  *) SECURITY: Do a more complete check in mod_include to avoid
     an infinite loop of recursive SSI includes. [Marc Slemko] PR#3323

  *) Add APACI --suexec-docroot and --suexec-logfile options which can be
     used to set the document root directory (DOC_ROOT) and the suexec
     logfile (LOG_EXEC), respectively. Additionally the --layout option
     was changed to show more information about the suEXEC setup.
     [Lars Eilebrecht] PR#3316, 3357, 3361

  *) Added the last two WebDAV status codes of 424 (Failed Dependency)
     and 507 (Insufficient Storage) for use by third-party modules.
     [Roy Fielding]

  *) Enabled all of the WebDAV method names for use by third-party
     modules, Limit, and Script directives. That includes PATCH,
     PROPFIND, PROPPATCH, MKCOL, COPY, MOVE, LOCK, and UNLOCK.
     Improved mod_actions.c so that it can use any of the methods
     defined in httpd.h. Added ap_method_number_of(method) for
     getting the internal method number. [Roy Fielding]

  *) PORT: Add a port to the TPF OS. [Joe Moenich <moenich@us.ibm.com> and
     others at IBM]

  *) Fix problems with handling of UNC names (e.g., \\host\path)
     on Win32. [Ken Parzygnat <kparz@us.ibm.com>]

  *) Rework os_canonical_*() on Win32 so it's simpler, more
     robust, and works. [Ken Parzygnat <kparz@us.ibm.com>]
     PR#2555, 2915, 3064, 3232

  *) Work around incomplete implementation of strftime on Win32.
     [Manoj Kasichainula, Ken Parzygnat <kparz@us.ibm.com>]

  *) Move a typedef to fix compile problems on Linux with 1.x kernels.
     [Manoj Kasichainula] PR#3177

  *) PORT: Add a port to the Concurrent PowerMAX OS. [Tom Horsley
     <Tom.Horsley@mail.ccur.com>]

  *) WIN32: Log more explicit error messages if spawning an interpreted
     script failed, including the command line used to attempt to execute
     the interpreter and the Win32 error code returned. [Marc Slemko]

  *) Disable sending of error-notes on a 500 (Internal Server Error) response
     since it often includes file path info. Enable sending of error-notes
     on a 501 (Method Not Implemented). [Roy Fielding] PR#3173

  *) http_config.c would respond with 501 (Method Not Implemented) if a
     content type handler was specified but could not be found, which
     should have been a 500 response. Likewise, mod_proxy.c would responsd
     with a 501 if the URI scheme is unrecognized instead of the correct
     response of 403 (Forbidden). [Roy Fielding]

  *) SECURITY: Eliminate DoS attack when a bad URI path contains what
     looks like a printf format escape. [Marc Slemko, Studenten Net Twente]

  *) Fix in mod_autoindex: for files where the last modified time stamp was
     unavailable, an empty string was printed which was 2 bytes short.
     The size and description columns were therefore not aligned correctly.
     [Martin Kraemer] (no PR#)

  *) Update BS2000 OS code to work with recent versions. Starting with
     release A17, the child fork() must be replaced by a _rfork().
     (BS2000 only) [Martin Kraemer]

  *) Add the actual server_rec structure of the specific Vhost to the
     scoreboard file and avoid a string copy (as well as allow some
     further future enhancements). [Harrie Hazewinkel
     <harrie.hazewinkel@jrc.it>]

  *) Add APACI --permute-module=foo:bar option which can be used to
     on-the-fly/batch permute the order of two modules (mod_foo and mod_bar)
     in the Configuration[.apaci] file. Two special and important variants are
     supported for the option argument: first BEGIN:foo which permutes module
     mod_foo with the begin of the module list, i.e. it `moves' the module to
     the begin of the list (gives it lowest priority). And second foo:END
     which permutes mod_foo with the end of the module list, i.e. it `moves'
     the module to the end of the list (gives it highest priority).
     [Ralf S. Engelschall]

  *) Fix problem with 'apache -k shutdown' and startup event
     synchronisation (Win32). [Ken Parzygnat <kparz@raleigh.ibm.com>]
     PR#3255

  *) The config parser wasn't correctly noticing a missing '>'
     on container start lines (e.g., it wouldn't spot
     "<Directory /" as a syntax error). [Ryan Bloom <rbbloom@us.ibm.com>]
     PR#3279

  *) Add a 'RemoveHandler' directive which will selectively remove
     all handler associations for the specified file extensions.
     [Ryan Bloom <rbbloom@us.ibm.com>] PR#1799.

  *) Properly handle & allow "nul" and ".*/null" in AccessConfig and
     ResourceConfig directives on Win32. Also add a note to the effect
     of 'useless User directive ignored on Win32' to the errorlog if
     a User directive is encountered on Win32.
     [Ken Parzygnat <kparz@raleigh.ibm.com>] PR#2078, 2303.

  *) Fix multiple whitespace handling in imagemaps for mod_imap which was
     broken since Apache 1.3.1 where we took out compressing of multiple
     spaces in ap_cfg_getline().
     [Ivan Richwalski <ivan@seppuku.net>] PR#3249

  *) Fix Berkeley-DB/2.x support in mod_auth_db: The data structures were not
     initialized correctly and the db_open() call used an invalid mode
     parameter. [Ron Klatchko <ron@ckm.ucsf.edu>] PR#3171

  *) PORT: DSO support for UnixWare 7
     [Ralf S. Engelschall, Ron Record <rr@sco.com>]

  *) Merge the contents of the {srm,access}.conf-dist* files into the
     httpd.conf-dist* files. The srm and access files now contain
     only comments, and httpd.conf has all the combined contents in
     a rational order. [Ken Coar]

  *) PORT: DSO/ELF support for FreeBSD 3.0.
     [Ralf S. Engelschall, Dirk Froemberg <ibex@physik.TU-Berlin.DE>]
  
  *) Add a "default-handler" handler that calls the default_hander()
     function which is normally called for static content. This allows
     you to override a specific handler. [Marc Slemko]

  *) Further simplify checking for absolute paths by replacing an
     hard-coded syntax check with a call to a routine we already created to
     do this. [Ken Parzygnat <kparz@raleigh.ibm.com>] PR#2976, 3074

  *) Log an error if we encounter a malformed "require" directive
     in mod_auth if we know that we know that no other module can
     deal with it. [Marc Slemko]

  *) Remove ap_private_extern method of hiding conflicting symbols
     on the NEXT platform because it is not correct for all versions,
     and the versions for which it is correct are unknown.
     [Wilfredo Sanchez <wsanchez@apple.com>]

  *) Fix inheritance of IndexOptions NameWidth and remove unintended
     restriction on +NameWidth, +IconHeight, and +IconWidth. [Ken Coar]

  *) Fix per-directory config merging for cases in which a 500 error
     is encountered in an .htaccess file somewhere down the tree.
     [Ken Coar] PR#2409

  *) Minor performance improvement to ap_escape_html(). [Roy Fielding]

  *) Fixed a segmentation violation in mod_proxy when a response is
     non-cachable. [Roy Fielding, traced by Doug Bloebaum]. PR#2950, 3056

Changes with Apache 1.3.3

  *) Added a complete implementation of the Expect header field as
     specified in rev-05 of HTTP/1.1. Disabled the 100 Continue
     response when we already know the final status, which is mighty
     useful for PUT responses that result in 302 or 401. [Roy Fielding]

  *) Remove extra trailing whitespace from the getline results as part
     of the protocol processing, which is extra nice because it works
     between continuation lines, is almost no cost in the normal case
     of no extra whitespace, and saves memory. [Roy Fielding]

  *) Added new HTTP status codes and default response bodies from the
     revised HTTP/1.1 (307, 416, 417), WebDAV (102, 207, 422, 423), and
     HTTP Extension Framework (510) specifications. Did not add the
     WebDAV 424 and 425 codes because they are bogus. We don't use any
     of these codes yet, but they are now available to 3rd-party modules.
     [Roy Fielding]

  *) Fix a possible race condition between timed-out requests and the
     ap_bhalfduplex select that might result in an infinite loop on
     platforms that do not validate the descriptor. [Roy Fielding]

  *) WIN32: Add "-k shutdown" and "-k restart" options to signal a
     running Apache server [Paul Sutton]

  *) Fix mod_autoindex bug where directories got a size of "0k" instead
     of "-". [Martin Plechsmid <plechsmi@karlin.mff.cuni.cz>, Marc Slemko]
     PR#3130

  *) PORT: DRS 6000 machine. [Paul Debleecker <pdebleecker@jetair.be>]

  *) Add the server signature text (from the core ServerSignature directive)
     to the list of envariables available to scripts, SSI, and the like.
     [Ken Coar]

  *) PORT: Fix sys/resource.h handling for SCO 3.x platform.
     [M. Laak <maert@proinv.ee>] PR#3108
 
  *) Fallback from sysconf-based to plain HZ-based `ticks per second'
     calculation in mod_status for all systems which don't have POSIX
     sysconf() (like UTS 2.1) and not only for the NEXT platform.
     [Dave Dykstra <dwd@bell-labs.com>] PR#3055

  *) Fix `require ...' directive parsing in mod_auth, mod_auth_dbm and
     mod_auth_db by using ap_getword_white() (which uses ap_isspace())
     instead of ap_getword(..., ' ') (which parses only according to spaces
     but not tabs). [James Morris <jmorris@intercode.com.au>,
     Ralf S. Engelschall] PR#3105

  *) Fix the SERVER_NAME variable under sub-request situations (where
     `UseCanonicalName off' is used) like CGI's called from SSI pages or
     RewriteCond variables by adopting r->hostname to sub-requests.
     [James Grinter <jrg@blodwen.demon.co.uk>] PR#3111

  *) Fix stderr redirection under syslog-based error logging situation.
     [Youichirou Koga <y-koga@jp.FreeBSD.org>] PR#3095

  *) Document `ErrorLog syslog:facility' variant of error logging.
     [Youichirou Koga <y-koga@jp.FreeBSD.org>] PR#3096

  *) Fix http://localhost/ hints in top-level INSTALL document.
     [Rob Jenson <robjen@spotch.com>, Ralf S. Engelschall] PR#3088

  *) Quote paths in default configuration files. [Wilfredo Sanchez]

  *) PORT: Remove extra HAVE_SYS_RESOURCE_H define for RHAPSODY since
     it is now taken care of properly by the header file tests.
     [Wilfredo Sanchez <wsanchez@apple.com>]

  *) Fix problem with scripts and filehandle inheritance on Win32.
     [Ken Parzygnat <kparz@raleigh.ibm.com>] PR#2884, 2910

  *) Win32 name canonicalisation could end up using the server's
     working directory to fill in some blanks. [Ken Parzygnat
     <kparz@raleigh.ibm.com>] PR#3001

  *) Correct invalid assumption by ap_sub_req_lookup_file() that all
     absolute paths begin with "/" -- because they don't on Win32.
     [Ken Parzygnat <kparz@raleigh.ibm.com>] PR#2976, 3074

  *) Add [REDIRECT_]VARIANTS environment variable to mod_speling
     so that ErrorDocument 300 processors can reformat the list
     if desired. [Ken Coar] PR#2859

  *) Add +/- incremental prefixes to IndexOptions keywords, and
     enable merging of multiple IndexOptions directives. [Ken Coar]

  *) PORT: Allow GuessOS to recognize Unixware 7.0.1 [Steve Cameron
     <steve.cameron@compaq.com>]

  *) Reconstructed the loop through multiple htaccess file names so
     that missing files are not confused with unreadable files.
     [Roy Fielding]

  *) The ap_pfopen and ap_pfdopen routines were failing to protect the
     errno on an error, which leads to one error being mistaken for
     another when reading non-existent .htaccess files.
     [Jim Jagielski]

  *) OS/2: The new header tests get things right, need to update
     ap_config.h. [Brian Havard]

  *) The Perl %ENV hash will now be setup by default when using the
     mod_include `perl' command [Doug MacEachern]

  *) PORT: Add Pyramid DC/OSx support to configuration mechanism.
     [Earle Ake <akee@wpdiss1.wpafb.af.mil>]

  *) PORT: Fix sys/resource.h handling for Amdahl's UTS 2.1
     [Dave Dykstra <dwd@bell-labs.com>] PR#3054

  *) Correct comment in mod_log_config.c about its internals.
     [Elf Sternberg <elf@halcyon.com>]

  *) Avoid possible line overflow in Configure: Use an awkfile to
     handle the creation of modules.c [Jim Jagielski]

Changes with Apache 1.3.2

  *) Fix bug in ap_remove_module(), which caused problems for dso's
     who were the top_module. [Doug MacEachern]

  *) Add support for Berkeley-DB/2.x (in addition to Berkeley-DB/1.x) to
     mod_auth_db to both be friendly to users who wants to use this version
     and to avoid problems under platforms where only version 2.x is present.
     [Dan Jacobowitz <drow@false.org>, Ralf S. Engelschall]

  *) When using ap_log_rerror(), make the error message available to the
     *ERROR_NOTES envariables by default. [Ken Coar]

  *) BS2000 platform only: get rid of the nasty BS2000AuthFile.
     You now must define a BS2000Account name for the server User.
     This has fewer security implications than the old approach.
     [Martin Kraemer]

  *) Fix SHARED_CORE feature for HPUX platform: We now use extension `.sl'
     instead of `.so' and `SHLIB_PATH' instead of `LD_LIBRARY_PATH' on this
     platform to make the braindead HPUX linker happy. Notice, for the module
     DSOs we don't have to use this, because these are loaded manually (and
     not via HPUX' dld). [Ralf S. Engelschall] PR#2905, PR#2968

  *) Remove 64 thread limit on Win32.
     [Bill Stoddard <stoddard@raleigh.ibm.com>]

  *) Remove redundant substitutions in top-level Makefile.tmpl.
     [Ralf S. Engelschall]

  *) Fix APACI's `Group' configuration adjustment - especially for Linux
     platforms where `nogroup' exists in /etc/group. [Ralf S. Engelschall]
 
  *) Make PrintPath work generically instead of having one version
     strictly for OS/2. [Jim Jagielski, Brian Havard]

  *) Fix the recently introduced C header file checking: We now use the C
     pre-processor pass only (and no longer the complete compiler pass) to
     determine whether a C header file exists or not. Because only this way
     we're safe against inter-header dependencies (which caused horrible
     portability problems). The only drawback is that we now have a CPP
     configuration variable which has to be determined first (we do a similar
     approach as GNU Autoconf does here). When all fails the user still has
     the possibility to override it manually via APACI or src/Configuration.
     As a fallback for the header check itself we can directly check the
     existance of the file under /usr/include, too.
     [Ralf S. Engelschall] PR#2777

  *) PORT: Added RHAPSODY (Mac OS X Server) support. MAP_TMPFILE defined
     as an alternate mechanism for mmap'd shared memory for RHAPSODY.
     ap_private_extern defined to hide symbols that conflict with loaded
     dynamic libraries on the NEXT and RHAPSODY platforms.
     [Wilfredo Sanchez <wsanchez@apple.com>]

  *) Delete PID file on clean shutdowns.
     [Charles Randall <crandall@matchlogic.com>] PR#2947

  *) Fix mod_auth_*.html documents: NSCA -> NCSA
     [Youichirou Koga <y-koga@jp.FreeBSD.org>] PR#2991

  *) Fix INSTALL document: www.gnu.ai.mit.edu -> www.gnu.org
     [Karl Berry <karl@gnu.org>] PR#2994

  *) Fix dbmmanage.1 manual page.
     [Youichirou Koga <y-koga@jp.FreeBSD.org>] PR#2992
     
  *) Fix possible buffer overflow situation in suexec.c.
     [Jeff Stewart <jws@purdue.edu>] PR#2790

  *) Add some more LIBS for the SCO5 platform which are needed for the already
     used -lprot. It's actually a bug in SCO5, of course.
     [Ronald Record <rr@sco.com>] PR#2533

  *) Fix documentation of ProxyPass/ProxyPassReverse according to the
     trailing slash problem. [Jon Drukman <jsd@gamespot.com>] PR#2933
  
  *) Remove `-msym' option from LDFLAGS_SHLIB for the Digital UNIX (OSF/1)
     platform, because it's only supported under version 4.0 and higher. But
     because our GuessOS is still unaware of Digital UNIX versions and the
     -msym is just to optimize the DSO statup time a little bit it's safe and
     best when we leave it out now. [Ralf S. Engelschall] PR#2969

  *) Fix the ap_log_error_old(), ap_log_unixerr() and ap_log_printf()
     functions: First all three functions no longer fail on strings containing
     "%" chars and second ap_log_printf() no longer does a double-formatting
     (instead it directly passes through the message to be formatted to the
     real internal formatting function). [Ralf S. Engelschall] PR#2941

  *) Allow "Include" directives anywhere in the server config
     files (but not .htaccess files). [Ken Coar] PR#2727

  *) The proxy was refusing to serve CONNECT requests except to
     port 443 (https://) and 563 (snews://). The new AllowCONNECT
     directive allows the configuration of the ports to which a
     CONNECT is allowed. [Sameer Parekh, Martin Kraemer]

  *) mod_expires will now act on content that is not sent from a file
     on disk. Previously it would never add an Expires: header to
     any response that did not come from a file on disk; the only
     case where it still doesn't (and can't) add one for that type of
     content is if you are using a modification date based setting.
     [Marc Slemko, Paul Phillips <paulp@go2net.com>]

  *) Problems encountered during .htaccess parsing or CGI execution
     that lead to a "500 Server Error" condition now provide explanatory
     text (in the *ERROR_NOTES envariable) to ErrorDocument 500 scripts.
     [Ken Coar] PR#1291

  *) Add NameWidth keyword to IndexOptions directive so that the
     width of the filename column is customisable. [Ken Coar, Dean Gaudet]
     PR#1949, 2324.

  *) Recognize lowercase _and_ uppercase `uname' results under
     SCO OpenServer. [David Coelho <drc@ppt.com>]

  *) As duplicate "HTTP/1.0 200 OK" lines within the header seem to be
     a common problem of (mis-administrated?) IIS servers, make the apache
     proxy immune to these errors (and ignore the duplicates, but log
     the fact to error_log). [Martin Kraemer], after the proposal in PR#2914
     
  *) The <IfModule and <IfDefine block starting directives now only
     allow exactly one argument. Previously, the optional negation
     character '!' could be separated by whitespace without a syntax
     error being reported, albeit defeating the IfModule functionality
     (enclosed directives would ALWAYS be executed). By using the
     stricter syntax, these hard-to-track errors can be avoided.
     [Martin Kraemer]

  *) Simplify handling of IndexOptions in mod_autoindex -- and BTW
     cause the standalone FancyIndexing directive to logically OR
     into any existing IndexOptions settings rather than wiping
     them out. [Ken Coar]

  *) Changes in ftp proxy: make URL parsing simpler by using the
     parsed_uri stuff.
     + Add display of the "current directory" in cases where it's
     different from the supplied path (e.g., ftp://user@host/ lives
     in /home/user, not in /, therefore clicking on "../" in the
     starting directory might send us to /home/).
     + When ftp login fails, (esp. when a user name was part of the
     URL already), we now return [401 Unauthorized ] to allow the
     browser to pop up an authorization dialog. This makes passwords
     slightly less visible (they don't appear in the regular log files)
     and implements a functionality that other www proxy servers
     already offered.
     [Martin Kraemer]

  *) Triggered by the recent "Via:" header changes, the proxy module would
     dump core for replies with invalid headers (e.g., duplicate
     "HTTP/1.0 200 OK" lines). These errors are now logged and the
     core dump is avoided. Also, broken replies are not cached.
     [Martin Kraemer] PR#2914

  *) new `GprofDir' directive when compiled with -DGPROF, where gprof can
     plop gmon.out profile data for each child [Doug MacEachern]
   
  *) Use the construct ``"$@"'' instead of ``$*'' in the generated
     config.status script to be immune against arguments with whitespaces.
     [Yves Arrouye <yves@apple.com>] PR#2866

  *) Replace the inlined information grabbing stuff for the configuration
     adjustment feature (no --without-confadjust) with calls to a new helper
     script `buildinfo.sh' which is both more flexible and already proofed to
     be more robust against platform differences. This mainly fixes the
     recently occured ``sed: command garbled: ...'' problems.
     [Ralf S. Engelschall] PR#2776, PR#2848

  *) Make ab.c again pass ``gcc -Wall -Wshadow -Wpointer-arith -Wcast-align
     -Wmissing-prototypes -Wmissing-declarations -Wnested-externs -Winline''
     without complains after we recently added the POST feature.
     [Ralf S. Engelschall]

  *) Renamed is_HTTP_xxx() macros to ap_is_HTTP_xxx() name. They are used inside
     modules as API functions and we forgot them at the big symbol renaming.
     [Ralf S. Engelschall]

  *) Remove bad reference to non-existing SERVER_VERSION in mod_rewrite.html
     [Youichirou Koga <y-koga@jp.FreeBSD.ORG>] PR#2895

  *) Dynamically size the filename column of mod_autoindex output.
     [Dean Gaudet]

  *) Add the ability to do POST requests to the ab benchmarking tool.
     [Kurt Sussman <kls@best.com>] PR#2871

  *) Bump up MAX_ENV_FLAGS in mod_rewrite.h from the too conservatice limit of
     5 to 10 because there are some users out there who always have 5 to 8
     variables in one RewriteRule and had to patch mod_rewrite.h for every
     release. So 15 should be now more than enough, even for them. (I never
     needed more than 4 in my RewriteRules ;-)
     [Ralf S. Engelschall]

  *) Make the proxy generate and understand Via: headers
     [Martin Kraemer]

  *) Change the proxy to use tables instead of array_headers for
     the header lines. [Martin Kraemer]

  *) Make sure the config.status file is not overridden when just
     ``configure --help'' is used. [Ralf S. Engelschall] PR#2844

  *) Split MODULE_MAGIC_NUMBER into _MAJOR/_MINOR numbers. This should
     provide a way to trace API changes that add functionality but do
     not create a compatibility issue for precompiled modules, etc.
     See include/ap_mmn.h for more details. [Randy Terbush]

  *) Fix suexec installation under `make install root=xxx' situation.
     [Ralf S. Engelschall]

  *) Extend the output of the -V switch to include the paths of all
     compiled-in configuration files, if they were overridden at
     compile time, for least astonishment of the user.
     [Martin Kraemer]

  *) When READing a request in ExtendedStatus mode, the "old"
     vhost, request and client information is not displayed.
     [Jim Jagielski]

  *) STATUS is no longer available. Full status information now
     run-time configurable using the ExtendedStatus directive.
     [Jim Jagielski]

  *) SECURITY: Eliminate O(n^2) space DoS attacks (and other O(n^2)
     cpu time attacks) in header parsing. Add ap_overlap_tables(),
     a function which can be used to perform bulk update operations
     on tables in a more efficient manner. [Dean Gaudet]

  *) SECURITY: Added compile-time and configurable limits for
     various aspects of reading a client request to avoid some simple
     denial of service attacks, including limits on maximum request-line
     size (LimitRequestLine), number of header fields (LimitRequestFields),
     and size of any one header field (LimitRequestFieldsize). Also added
     a configurable directive LimitRequestBody for limiting the size of the
     request message body. [Roy Fielding]

  *) Make status module aware of DNS and logging states, even if
     STATUS not defined. [Jim Jagielski]

  *) Fix a problem with the new OS/2 mutexes. [Brian Havard]

  *) Enhance mod_speling so that CheckSpelling can be used in
     <Directory> containers and .htaccess files. [Ken Coar]

  *) API: new ap_custom_response() function for hooking into the
     ErrorDocument mechanism at runtime [Doug MacEachern]

  *) API: new ap_uuencode() function [Doug MacEachern]

  *) API: scan_script_header_err_core() now "public" and renamed
     ap_scan_script_header_err_core() [Doug MacEachern]

  *) The 'status' module will now show the process pid's and their
     state even without full STATUS accounting. [Jim Jagielski]

  *) Restore the client IP address to the error log messages, this
     was lost during the transition from 1.2 to 1.3. Add a new
     function ap_log_rerror() which takes a request_rec * and
     formats it appropriately. [Dean Gaudet] PR#2661

  *) Cure ap_cfg_getline() of its nasty habit of compressing internal
     whitespace in input lines -- including within quoted strings.
     [Ken Coar]
     but leading and trailing whitespace should continue to be
     stripped [Martin Kraemer]

  *) Cleanup of the PrintPath/PrintPathOS2 helper functions. Avoid
     the ugly use of an env. variable and use command-line args for
     alternate $PATH. Make more like advanced 'type's as well.
     [Jim Jagielski]

  *) The IRIXN32 Rule was being ignored. Configure now correctly adds
     -n32 only if IRIXN32 says to. [Jim Jagielski, Alain St-Denis
     <alain.st-denis@ec.gc.ca>] PR#2736

  *) Clean up a warning in mod_proxy. [Ralf S. Engelschall]

  *) Renamed __EMX__ (internal define of the gcc port under OS/2) to OS2
     following the same idea as "MSVC vs WIN32". Additionally the src/os/emx/
     directory was renamed to src/os/os2/ for consistency.
     [Brian Havard, Ralf S. Engelschall]

  *) Add new Rule SHARED_CHAIN which can be used to enable linking of DSO
     files (here modules) against other DSO files (here shared libraries).
     This is done by determining a subset of LIBS which can be safely used for
     linking the DSOs, i.e. PIC libs and shared libs. Currently the rule is
     disabled for all platforms to avoid problems with this (experimental)
     rule. But we provide it now for those people how ran into problems and
     want to came out by forcing linking against DSOs.
     [Ralf S. Engelschall] PR#2587

  *) Fix suEXEC start message: Has to be of `notice' level to really get
     printed together with the standard startup message because the `notice'
     level is handled special inside ap_log_error() for startup messages.
     [Ralf S. Engelschall] PR#2761 PR#2761 PR#2765

  *) Add correct `model' MIME types from RFC2077 to mime.types file.
     [Ralf S. Engelschall] PR#2732

  *) Fixed examples in mod_rewrite.html document.
     [Youichirou Koga <y-koga@jp.FreeBSD.org>, Ralf S. Engelschall] PR#2756

  *) Allow ap_read_request errors to propagate through the normal request
     handling loop so that the connection can be properly closed with
     lingering_close, thus avoiding a potential TCP reset that would
     cause the client to miss the HTTP error response. [Roy Fielding]

  *) One more portability fix for APACI shadow tree support: Swap order of awk
     and sed in top-level configure script to avoid sed fails on some
     platforms (for instance SunOS 4.1.3 and NCR SysV) because of the
     non-newline-termined output of Awk. [Ralf S. Engelschall] PR#2729

  *) PORT: NEC EWS4800 support.
     [MATSUURA Takanori <t-matsuu@protein.osaka-u.ac.jp>]

  *) Fix a segfault in the proxy on OS/2. [Brian Havard]

  *) Fix Win32 part of ap_spawn_child() by providing a reasonable child_info
     structure instead of just NULL. This fixes at least the RewriteMap
     programs under Win32. [Marco De Michele <mdemichele@tin.it>] PR#2483

  *) Add workaround to top-level `configure' script for brain dead
     `echo' commands which interpet escape sequences per default.
     [Ralf S. Engelschall] PR#2654

  *) Make sure that the path to the Perl interpreter is correctly
     adjusted under `make install' also for the printenv CGI script.
     [Ralf S. Engelschall] PR#2595
 
  *) Update the mod_rewrite.html document to correctly reflect the situation
     of the `proxy' (`[P]') feature. [Ralf S. Engelschall] PR#2679

  *) Fix `install-includes' sub-target of `install' target in top-level
     Makefile.tmpl: The umask+cp approach didn't work as expected (especially
     for users which extracted the distribution under 'umask 077'), so replace
     it by an explicit cp+chmod approach.
     [Richard Lloyd, Curt Sampson, Ralf S. Engelschall] PR#2656 PR#2626
 
  *) Fix `distclean' and `clean' targets in src/Makefile.tmpl to have same
     behavior and to cleanup correctly even under enabled SHARED_CORE rule.
     [Ralf S. Engelschall]

  *) Use a more straight forward and thus less problematic Sed command in
     src/helper/mkdir.sh script. [Ralf S. Engelschall]

  *) Make sure the `configure' scripts doesn't fail when trying to guess the
     domainname of the machine and there are multiple `domainname' and
     `search' entries in /etc/resolv.conf.
     [Ralf S. Engelschall] PR#2710

  *) Add note about the SHARED_CORE requirement on some platforms also to the
     INSTALL file because a lot of users don't read htdocs/manual/dso.html
     first. [Ralf S. Engelschall] PR#2701

  *) Fix document "hyperlink" for dso.html in src/Configuration.tmpl
     [Knut A.Syed <Knut.Syed@nhh.no>] PR#2674

  *) Modify mod_rewrite to update the Vary response field if the URL rewriting
     engine does any manipulations or decisions based upon request fields.
     [Ken Coar] PR#1644

  *) Document the special APACI behavior for installation paths where
     ``/apache'' is appended to paths under some (well defined, of course)
     situations to prevent pollution of system locations with Apache files.
     [Ralf S. Engelschall] PR#2660

  *) Fixed problem with buffered response message not being sent for
     the read_request error conditions of URI-too-long (414) and
     malformed header fields (400). [Roy Fielding] PR#2646

  *) Add support for the Max-Forwards: header line required by RFC2068 for
     the TRACE method. This allows apache to TRACE along a chain of proxies
     up to a predetermined depth. [Martin Kraemer]

  *) Fix SHARED_CORE rule: The CFLAGS_SHLIB variable is no longer doubled
     (compilers complained) and the .so.V.R.P filename extension was adjusted
     to correctly reflect the 1.3.2 version.
     [Ralf S. Engelschall] PR#2644

  *) SECURITY: Plug "..." and other canonicalization holes under OS/2.
     [Brian Havard]
  
  *) PORT: implement serialized accepts for OS/2. [Brian Havard]

  *) mod_include had problems with the fsize and flastmod directives
     under WIN32. Fix also avoids the minor security hole of using
     ".." paths for fsize and flastmod.
     [Manoj Kasichainula <manojk@raleigh.ibm.com>] PR#2355

  *) Fixed some Makefile dependency problems. [Dean Gaudet]

Changes with Apache 1.3.1

  *) Disable the incorrect entry for application/msword in the
     mod_mime_magic "magic" file because it also matches other Office
     documents. [Ralf S. Engelschall] PR#2608

  *) Fix broken RANLIB handling in src/Configure (the entry from
     src/Configuration.tmpl was ignored) and additionally force RANLIB to
     /bin/true under HP/UX where ranlib exists but is deprecated.
     [Ralf S. Engelschall] PR#2627
     
  *) 'apachectl status' failed on some systems.
     [Steve VanDevender <stevev@darkwing.uoregon.edu>, Lars Eilebrecht] PR#2613

  *) Add new flags for ap_unparse_uri_components() to make it generate
     the scheme://sitepart string only, or to omit the query string.
     [Martin Kraemer]

  *) WIN32: Canonicalize ServerRoot before checking to see if it
     is a valid directory. The failure to do this caused certain
     ServerRoot settings (eg. "ServerRoot /apache") to be improperly
     rejected. [Marc Slemko]

  *) Global renaming of C header files to both get rid of conflicts with third
     party packages and to again reach consistency:
       1. conf.h -> ap_config.h
       2. conf_auto.h -> ap_config_auto.h \ these are now merged
       3. ap_config.h -> ap_config_auto.h / in the config process
       4. compat.h -> ap_compat.h
       5. apctype.h -> ap_ctype.h
     Backward compatibility files for conf.h and compat.h were created.

  *) mod_mmap_static will no longer take action on requests unless at
     least one "mmapfile" directive is present in the configuration.
     This experimental module has to do some black magic to operate
     inside the current API and thus creates side-effects for other
     modules under some circumstances.
     [Ralf S. Engelschall]
 
  *) Add conservative ticks around more egrep arguments in top-level configure
     to avoid problems under brain-dead platforms like Digital UNIX (OSF1).
     [Ralf S. Engelschall] PR#2596

  *) mod_rewrite created RewriteLock files under the UID of the parent
     process, thus the child processes had no write access to the files.
     Now a chown() is done on the file to the uid of the children,
     if applicable. [Lars Eilebrecht, Ralf S. Engelschall] PR#2341

  *) Autogenerate some HAVE_XXXXX_H defines in conf_auto.h (determined via
     TestCompile) instead of defining them manually in conf.h based on less
     accurate platform definitions. This way we no longer have to fiddle with
     OS-type and/or OS-version identifiers to discover whether a system header
     file exists or not. Instead we now directly check for the existence of
     those esoteric ones.
     [Ralf S. Engelschall] PR#2093, PR#2361, PR#2377, PR#2434,
                           PR#2524, PR#2525, PR#2533, PR#2569

  *) mod_setenvif (BrowserMatch* and friends) will now match a missing
     field with "^$". [Ken Coar]

  *) Set the RTLD_GLOBAL dlopen mode parameter to allow dynamically loaded
     modules to load their own modules dynamically. This improves mod_perl
     and mod_php3 when these modules are loaded dynamically into Apache.
     [Rasmus Lerdorf]

  *) Cache a proxied request in the event that the client cancels the
     transfer, provided that the configured percentage of the file has
     already been transfered. It works for HTTP transfers only. The
     new configuration directive is called CacheForceCompletion.
     [Glen Parker <glenebob@nwlink.com>] PR#2277

  *) Add the "<!DOCTYPE HTML" magic cookie used by modern documents (and
     required by HTML 3.2 and later) to mod_mime_magic's conf/magic.
     [Anna Shergold <anna@inext.co.uk>]

  *) Fix yet another signal-based race condition involving nested timers.
     Signals suck. [Dean Gaudet]

  *) suexec's error messages have been clarified a little bit. [Ken Coar]

  *) Clean up some, but perhaps not all, 8-bit character set problems
     with config file parsing, and URL parsing. We now define
     ap_isdigit(), ap_isupper(), ... which cast to an (unsigned char).
     This should work on most modern unixes.
     [Dean Gaudet] PR#800, 2282, 2553 (and others)

  *) The "handler not found" error was issued in cases where the handler
     really did exist, but was just declining to serve the request.
     [John Van Essen <jve@gamers.org>] PR#2529

  *) Add Dynamic Shared Object (DSO) support for SCO5 (OpenServer 5.0.x).
     [Ronald Record <rr@sco.com>] PR#2533

  *) The APACI libexecdir was not extended with an "apache/" subdir
     if the installation prefix didn't already contain "apache", but
     it should be because the DSO files are Apache-specific. Now
     libexecdir is treated the same way sysconfdir, datadir, localstatedir
     and includedir are already treated.
     [Charles Levert <charles@comm.polymtl.ca>] PR#2551

  *) The <Limit> parsing routine was incorrectly treating methods as
     case-insensitive. [Ken Coar]

  *) The ap_bprintf() code neglected to test if there was an error on
     the connection. ap_bflush() misdiagnosed a failure as a success.
     [Dean Gaudet]

  *) add support for #perl arg interpolation in mod_include
     [Doug MacEachern]

  *) API: Name changes of table_elts to ap_table_elts, is_table_empty
     to ap_is_table_empty and bgetflag to ap_bgetflag. [Ben Laurie]

  *) PORT: Add UnixWare 7 support
     [Vadim Kostoglodoff <vadim@olly.ru>] PR#2463

  *) Fix the Guess-DSO-flags-from-Perl stuff in src/Configure: "perl" was
     used instead of "$PERL" which contains the correctly determined Perl
     interpreter (important for instance on systems where "perl" and "perl5"
     exists, like BSDI or FreeBSD, etc).
     [Ralf S. Engelschall] PR#2505

  *) Move the initial suEXEC-related startup message from plain
     fprintf()/stderr to a delayed ap_log_error()-based one to avoid problems
     when Apache is started from inetd (instead of standalone). Under this
     situation startup messages on stderr lead to problems (the line is sent
     to the client in front of the requested document).
     [Ralf S. Engelschall] PR#871, PR#1318

  *) Add a flag so ap_fnmatch() can be used for case-blind pattern matching.
     [Ken Coar, Dean Gaudet]

  *) WIN32: Don't collapse multiple slashes in PATH_INFO.
     [Ben Laurie, Bill Stoddard <wgstodda@us.ibm.com>] PR#2274

  *) WIN32 SECURITY: Eliminate trailing "."s in path components. These are
     ignored by the Windows filesystem, and so can be used to bypass security.
     [Ben Laurie, Alexei Kosut].

  *) We now attempt to dump core when we get SIGILL. [Jim Jagielski]

  *) PORT: remove broken test for MAP_FILE in http_main.c.
     [Wilfredo Sanchez <wsanchez@apple.com>]

  *) PORT: Change support/apachectl to use "kill -0 $pid" to test if the
     httpd is running. This should be more portable than figuring out
     which of three dozen different versions of "ps" are installed.
     [a cast of dozens]

  *) WIN32: If we can't figure out how to execute a file in a script
     directory, bail out of the request with an error message. [W G Stoddard]

  *) WIN32 SECURITY: Eliminate directories consisting of three or more dots;
     these are treated by Win32 as if they are ".." but are not detected by
     other machinery within Apache. This is something of a kludge but
     eliminates a security hole. [Manoj Kasichainula, Ben Laurie]

  *) Move ap_escape_quotes() from src/ap to src/main/util.c; it uses
     pools and thus pollutes libap (until the pool stuff is moved there).
     [Ken Coar]

  *) IndexIgnore should be case-blind on Win32 (and any other case-aware
     but case-insensitive platforms). New #define for this added to conf.h
     (CASE_BLIND_FILESYSTEM). [Ken Coar] PR#2455

  *) Enable DSO support for OpenBSD in general, not only for 2.x, because it
     also works for OpenBSD 1.x. [Ralf S. Engelschall]

  *) PORT: Fix compilation problem on ARM Linux.
     [Sam Kington <sam@illuminated.co.uk>] PR#2443

  *) Let APACI's configure script determine some configuration parameters
     (Group, Port, ServerAdmin, ServerName) via some intelligent tests to
     remove some of the classical hurdles for new users when setting up
     Apache. This is done per default because it is useful for the average
     user. Package authors can use the --without-confadjust option to disable
     these configuration adjustments.
     [Ralf S. Engelschall]

  *) Added an EXTRA_DEPS configuration parameter which can be used
     to add an extra Makefile dependency for the httpd target, for instance
     to external third-party libraries, etc.
     [Ralf S. Engelschall]

  *) Add <IfDefine>..</IfDefine> sections to the core module (with same spirit
     as <IfModule>..</IfModule> sections) which can be used to skip or process
     contained commands dependend of ``-D PARAMETER'' options on the command
     line. This can be used to achieve logical conditions like <IfDefine
     ReverseProxy> instead of physically ones (e.g. <IfModule mod_proxy.c>)
     and thus especially can be used for conditionally loading DSO-based
     modules via LoadModule, etc. [Ralf S. Engelschall]

  *) PORT: clean up a warning in mod_status for OS/2. [Brian Havard]

  *) Make table elements const. This may prevent obscure errors. [Ben Laurie]

  *) Fix parsing of FTP `SIZE' responses in proxy module: The newline was not
     truncated which forced following HTTP headers to be data in the HTTP
     reponse. [Ralf S. Engelschall, Charles Fu <ccwf@bacchus.com>]
     PR#2412, 2367

  *) Portability fix for APACI shadow tree support: Swap order of awk and sed
     in top-level configure script to avoid sed fails on some platforms (for
     instance SunOS 4.1.3 and NCR SysV) because of the non-newline-termined
     output of Awk. [Bill Houle <bhoule@sandiegoca.ncr.com>] PR#2435

  *) Improve performance of directory listings (mod_autoindex) by comparing
     integer keys (last-modified and size) as integers rather than converting
     them to strings first. Also use a set of explicit byte tests rather
     than strcmp() to check for parent directory-ness of an entry. Oh, and
     make sure the parent directory (if displayed) is *always* listed first
     regardless of the sort key. Overall performance winnage should be good
     in CPU time, instruction cache, and memory usage, particularly for large
     directories. [Ken Coar]

  *) Add a tiny but useful goody to APACI's configure script: The generation
     of a config.status script (as GNU Autoconf does) which remembers the used
     configure command and hence can be used to restore the configuration by
     just re-running this script or for remembering the configuration between
     releases.
     [Ralf S. Engelschall]

  *) Add httpd -t (test) option for running configuration syntax tests only.
     If something is broken it complains and exits with a return code
     non-equal to 0. This can be used manually by the user to check the Apache
     configuration after editing and is also automatically used by apachectl
     on (graceful) restart command to make sure Apache doesn't die on restarts
     because of a configuration which is now broken since the last (re)start.
     This way `apachectl restart' can be used inside cronjobs without having
     to expect Apache to be falling down. Additionally the httpd -t can be run
     via `apachectl configtest'.
     [Ralf S. Engelschall] PR#2393
  
  *) Minor display fix for "install" target of top-level Makefile:
     the displayed installation command was incorrect although the
     executed command was correct. Now they are in sync.
     [Ralf S. Engelschall] PR#2402

  *) Correct initialization of variable `allowed_globals' in http_main.c
     [Justin Bradford <justin@ukans.edu>] PR#2400

  *) Apache would incorrectly downcase the entire Content-Type passed from
     CGIs. This affected server-push scripts and such which use
     multipart/x-mixed-replace;boundary=ThisRandomString.
     [Dean Gaudet] PR#2394

  *) PORT: QNX update to properly guess 32-bit systems.
     [Sean Boudreau <seanb@qnx.com>] PR#2390

  *) Make sure the DSO emulation code for HPUX finds the proprietary shl_xxx()
     functions which are in libdld under HPUX 9/10.
     [Ralf S. Engelschall] PR#2378

  *) Make sure the "install" target of the top-level Makefile doesn't break
     because of a return code of 1 from an "if" (for instance under braindead
     Ultrix the result code of an "if" construct is 1 if the "then" clause
     didn't match). [Ralf S. Engelschall]

  *) Add an additional "dummy" target to the "$(LIB)" target in generated
     modules/xxx/Makefile's to avoid problems with SVR4 Make under "full-DSO"
     situation (no libxxx.a built, only mod_xxx.so's) where LIB and OBJS are
     empty. [Ralf S. Engelschall, Dean Gaudet, Martin Kraemer]

  *) Replace two bad sprintf() calls with ap_snprintf() variants in
     mod_rewrite. [Ralf S. Engelschall]

  *) Fix missing usage description for MetaFiles directive.
     [David MacKenzie <djm@va.pubnix.com>] PR#2384

  *) mod_log_config wouldn't let vhosts use log formats defined in the
     main server. [Christof Damian <damian@mediaconsult.com>] PR#2090

  *) mod_usertrack was corrupting the client hostname. As part of the
     fix, the cookie values were slightly extended to include the
     fully qualified hostname of the client.
     [Dean Gaudet] PR#2190, 2229, 2366

  *) Fix a typo in pool debugging code. [Alvaro Martinez Echevarria]

  *) mod_unique_id did not work on alpha linux (in general on any
     architecture that has 64-bit time_t).
     [Alvaro Martinez Echevarria]

  *) PORT: Make SCO 5 (and probably 3) compile again. [Ben Laurie]

  *) PORT: NCR MPRAS systems have the same bug with SIGHUP restart that
     Solaris systems experience. So define WORKAROUND_SOLARIS_BUG.
     [Klaus Weber <kweber@chephren.germany.ncr.com>] PR#1973

  *) Change "Options None" to "Options FollowSymLinks" in the
     <Directory /> section of the default access.conf-dist
     (and -win even though it doesn't matter there). This has better
     performance, and more intuitive semantics. [Dean Gaudet]

  *) PORT: Updated support for UTS 2.1.2.
     [Dave Dykstra <dwd@bell-labs.com>] PR#2320

  *) Fix symbol export list (src/support/httpd.exp) after recent
     API changes in the child spawning area.
     [Jens-Uwe Mager <jum@helios.de>]

  *) Workaround for configure script and old `test' commands which do not
     support the -x flag (for instance under platforms like Ultrix). This is
     solved by another helper script findprg.sh which searches for Perl and
     Awk like PrintPath but _via different names_.
     [Ralf S. Engelschall]

  *) Remove the system() call from htpasswd.c, which eliminates a system
     dependancy. ["M.D.Parker" <mdpc@netcom.com>] PR#2332

  *) PORT: Fix compilation failures on NEXTSTEP.
     [Rex Dieter <rdieter@math.unl.edu>] PR#2293, 2316

  *) PORT: F_NDELAY is a typo, should have been FNDELAY. There's also
     O_NDELAY on various systems. [Dave Dykstra <dwd@bell-labs.com>] PR#2313

  *) PORT: helpers/GuessOS updates for various versions for NCR SVR4.
     [juerg schreiner <j.schreiner@zh.ch>,
     Bill Houle <Bill.Houle@SanDiegoCA.NCR.COM>] PR#2310

  *) Fix recently introduced Win32 child spawning code in mod_rewrite.c which
     was broken because of invalid ap_pstrcat() -> strcat() transformation.
     [Ralf S. Engelschall]

  *) Proxy Cache Fixes: account for directory sizes, fork off garbage collection
     to continue in background, use predefined types (off_t, size_t, time_t),
     log the current cache usage percentage at LogLevel debug
     [Martin Kraemer, based on discussion between Dean Gaudet & Dirk vanGulik]

Changes with Apache 1.3.0

  *) Using a type map file as a custom error document was not possible.
     [Lars Eilebrecht] PR#1031

  *) Avoid problems with braindead Awks by additionally searching for gawk
     and nawk in APACI's configure script.
     [Dave Dykstra <dwd@bell-labs.com>, Ralf S. Engelschall] PR#2319

  *) Rename md5.h to ap_md5.h to avoid conflicts with native MD5 on
     some systems. [Randy Terbush]

  *) Change usage of perror()+fprintf(stderr,...) in mod_rewrite to
     more proper ap_log_error() variants.
     [Ralf S. Engelschall]

  *) Make sure the argument for the --add-module option to APACI's configure
     script is of type [path/to/]mod_xxx.c because all calculations inside
     configure and src/Configure depend on this.
     [Ralf S. Engelschall] PR#2307

  *) Changes usage of perror/fprintf to stderr to more proper ap_log_error
     in mod_mime, mod_log_referer, mod_log_agent, and mod_log_config.
     [Brian Behlendorf]

  *) Various OS/2 cleanups ["Brian Havard" <brianh@kheldar.apana.org.au>]

  *) PORT: QNX needed a #include <sys/mman.h>; and now it uses flock
     serialized accept to handle multiple sockets.
     [Rob Saccoccio <robs@InfiniteTechnology.com>] PR#2295, 2296
 
  *) Have NT properly set the directory for CGI scripts
     (& other spawned children)
     [W G Stoddard <wgstodda@us.ibm.com>]

  *) Propagate environment to CGI scripts correctly in Win32.
     [W G Stoddard <wgstodda@us.ibm.com>] PR#2294

  *) Some symbol renaming:
     ap_spawn_child_err became ap_spawn_child
     ap_spawn_child_err_buff became ap_bspawn_child
     spawn_child was obsoleted and moved to compat.h
     [Brian Behlendorf]

  *) Upgrade the child spawning code in mod_rewrite for the RewriteMap
     programs: ap_spawn_child_err() is used and the Win32 case now uses
     CreateProcess() instead of a low-level execl() (which caused problems in
     the past under Win32).
     [Ralf S. Engelschall]

  *) A few cosmetics and trivial enhancements to APXS to make the
     generated Makefile more user friendly. [Ralf S. Engelschall]

  *) Proxy Fix: The proxy special failure routine ap_proxyerror()
     was updated to use the normal apache error processing, thereby allowing
     proxy errors to be treated by ErrorDocument's as well. For this
     purpose, a new module-to-core communication variable "error-notes"
     was introduced; the proxy (and possibly other modules) communicates
     its error text using this variable. Its content is copied to a new
     cgi-env-var REDIRECT_ERROR_NOTES for use by ErrorDocuments.
     The old proxy special error routine ap_proxy_log_uerror()
     was replaced by regular ap_log_error() calls, many messages were made
     more informative.
     [Martin Kraemer] PR#494, 1259

  *) SECURITY: A possible buffer overflow in the ftp proxy was fixed.
     [Martin Kraemer]

  *) Transform the configure message "You need root privileges for suEXEC"
     from a fatal error into a (more friendly) warning because the building
     ("make") of Apache we can allow, of course. Root privileges are needed
     only for the installation step ("make install"). So make sure the
     user is aware of this fact but let him proceed as long as he can.
     [Ralf S. Engelschall] PR#2288
  
  *) Renamed three more functions to common ap_ prefix which we missed at the
     Big Symbol Renaming because they're #defines and not real C functions:
     is_default_port(), default_port(), http_method().
     [Ralf S. Engelschall]

  *) A zero-length name after a $ in an SSI document should cause
     just the $ to be in the expansion. This was broken during the
     security fixes in 1.2.5. [Dean Gaudet] PR#1921, 2249

  *) Call ap_destroy_sub_req() in ap_add_cgi_vars() to reclaim some
     memory. [Rob Saccoccio <robs@InfiniteTechnology.com>] PR#2252

  *) Fix src/support/httpd.exp (DSO export file which is currently only
     used under AIX) because of recent changes to function names.
     [Ralf S. Engelschall]

Changes with Apache 1.3b7

  *) Make sure a MIME-type can be forced via a RewriteRule even when no
     substitution takes place, for instance via the following rule:
     ``RewriteRule ^myscript$ - [T=application/x-httpd-cgi]'' This was often
     requested by users in the past to force a single script without a .cgi
     extension and outside any cgi-bin dirs to be executed as a CGI program.
     [Ralf S. Engelschall] PR#2254

  *) A fix for protocol issues surrounding 400, 408, and
     414 responses. [Ed Korthof]

  *) Ignore MaxRequestsPerChild on WIN32. [Brian Behlendorf]

  *) Fix discrepancy in proxy_ftp.c which was causing failures when
     trying to connect to certain ftpd's, such as anonftpd.
     [Rick Ohnemus <rick@ecompcon.com>]

  *) Make mod_rewrite use ap_open_piped_log() for RewriteLog directive's
     logfile instead of fiddling around itself with child spawning stuff.
     [Ralf S. Engelschall]

  *) Made RefererIgnore case-insensitive.

  *) Mod_log_agent, mod_log_referer now use ap_open_piped_log for piped logs.
     [Brian Behlendorf]

  *) Replace use of spawn_child with ap_spawn_child_err_buff, to make everything
     "safe" under Win32. In: mod_include.c, mod_mime_magic.c
     [Brian Behlendorf]

  *) Improve RFC1413 support. [Bob Beck <beck@bofh.ucs.ualberta.ca>]

  *) Fix support script `dbmmanage': It was unable to handle some sort
     of passwords, especially passwords with "0" chars.
     [Ralf S. Engelschall] PR#2242

  *) WIN32: Clicking on "Last Modified" in a fancy index caused a crash. Fixed.
     [Ben Laurie] PR#2238

  *) WIN32: CGIs could cause a hang (because of a deadlock in the standard C
     library), so CGI handling has been changed to use Win32 native handles
     instead of C file descriptors.
     [Ben Laurie and Bill Stoddard <wgstodda@us.ibm.com>] PR#1129, 1607

  *) The proxy cache would store an incorrect content-length in the cached
     file copy after a cache update. That resulted in repeated fetching
     of the original copy instead of using the cached copy.
     [Ernst Kloppenburg <kloppen@isr.uni-stuttgart.de>] PR#2094

  *) The Makefiles assumed that DSO files are build via $(LD). This
     is broken for two reasons: First we never defined at least LD=ld
     somewhere to make sure this works (it was silently assumed that most Make
     provide a built-in LD definition - ARGL!) and second using the generic LD
     variable is not the truth. Instead a special variable named LD_SHLIB is
     reasonable because although "ld" is usually the default, the command for
     building DSO files can be "libtool" or even "cc" on some systems.
     [Ralf S. Engelschall]

  *) Replace the AddVersionPlatform directive with ServerTokens which
     provides for more control over the format of the Server:
     header line. SERVER_SUBVERSION is no longer supported;
     all module should use the ap_add_version_component()
     API function instead. [Jim Jagielski]

  *) Support for the NCR MP/RAS 3.0
     [John Withers <withers@semi.kcsc.mwr.irs.gov>]