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
     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>]

  *) The LDFLAGS_SHLIB_EXPORT variable of src/Configuration[.tmpl] was
     not retrieved in src/Configure and thus was not useable.
     [Ralf S. Engelschall]
 
  *) Various Makefile consistency cleanups:
     - make OSDIR also automatically be relative to src/ like INCDIR
     - SUBDIRS is now generated in src/Makefile only and not in
       Makefile.config because it is a local define for this location.
     - remove BROKEN_BPRINTF_FLAGS because is it no longer used inside
       any Makefile but make sure that at least the "-K inline" is kept in
       CFLAGS for SCO 5.
     - update the "depend" targets in Makefile.tmpl files to use $(OSDIR), too.
     - updated the dependencies theirself
     - removed not existing SHLIB variable from "clean" targets
     - replaced SHLIB_OBJS/SHLIBS_OBJ consistently with OBJS_PIC because OBJS
       already exists and OBJS_PIC are also just plain objects and have not
       directly to do with "shared" things. The only difference is that they
       contain PIC. So OBJS_PIC is the more canonical name.
     - Updated the Makefile-dependency lines for OBJS_PIC
     - Removed the Makefile-dependency line in Configure to avoid double
       definitions
     - replaced ugly xx-so.o/xx.so-o hack with a clean and consistent usage
       of xxx.lo as GNU libtool does with its PIC objects
     - reduce local complexity in modules Makefile.tmpl by moving the last
       existing target "depend" to the generation section in Configure, too.
     - removed the historical $(SPACER) which was used in the past together
       with BROKEN_BPRINTF_FLAGS to avoid zig-zags in the build process. This
       is no longer needed.
     - force the build and run of the gen_xxx programs under main/ as the
       first step before building the objects because it looks cleaner
     [Ralf S. Engelschall]

  *) WIN32: Make Win32 work again after the /dev/null DoS fix.
     [Ben Laurie]

  *) WIN32: Check for buffer overflows in ap_os_canonical_filename.
     [Ben Laurie]

  *) WIN32: Don't force ISAPI headers to finish with \n.
     [Jim Patterson <Jim.Patterson@Cognos.COM>, Ben Laurie] PR#2060

  *) When opening "configuration" files (like httpd.conf, htaccess
     and htpasswd), Apache will not allow them to be non-/dev/null
     device files. This closes a DoS hole. At the same time,
     we use ap_pfopen to open these files to handle timeouts.
     [Jim Jagielski, Martin Kraemer]

  *) Apache will now log the reason its httpd children exit if they exit
     due to an unexpected signal.  (It requires a new porting define,
     SYS_SIGLIST, which if defined should point to a list of text
     descriptions of the signals available.  See PORTING.)  [Dean Gaudet]

  *) WIN32: chdir() doesn't make sense in a multithreaded environment 
     like WIN32.  Before, Win32 CGI's could have had sporadic failures 
     if a chdir call from one thread was made between another chdir call 
     and a spawn in another thread.  So, for now don't chdir for CGI scripts 
     in WIN32.  The current CGI "spec" is unclear as to whether it's 
     necessary.  Long-term fix is to either serialize the chdir/spawn combo 
     or use WIN32 native calls to spawn a process.  This temp fix was 
     necessary to remove this as a showstopper for 1.3's release. 
     [Brian Behlendorf]

  *) Cleanup the suEXEC support in APACI and make it more safe:
     1. Add big fat hint in INSTALL about risks and to read the
        htdocs/manual/suexec.html document before using the suexec-related
        configure options.
     2. Make sure the user has at least provided one --suexec-xxxx option
        (specifies suEXEC parameters) in addition to --enable-suexec option.
        If only --enable-suexec is given APACI stops with a hint to INSTALL
        and htdocs/manual/suexec.html documents.
     3. Provide two additional --suexec-xxxx options to make the suEXEC
        configuration complete (especially for package maintainers who else
        had to patch the source tree) by providing ways to configure minimal
        UID/GID and safe PATH, too.
     [Ralf S. Engelschall]

  *) Cleanup of the `configure --shadow' process:
     - make sure the configure script creates its temporary files in the
       shadow tree to avoid conflicts with parallel configure runs
     - removed unnecessary option "-r" from "rm" call for Makefiles
     - make sure the configure scripts creates the shadow-wrapper Makefile
       only when no shadow trees already exists
     - make sure "make distclean" removes the shadow-wrapper Makefile but only
       when no more shadow trees exists
     - overhauled mkshadow.sh script: now its more IFS-safe and approx. twice
       as fast (in the past it needed 70sec, now it runs just 38sec)
     - make sure CVS does not complain about the created files
       Makefille.<gnutriple> and directories src.<gnutriple>
     [Ralf S. Engelschall]

  *) Added the ap_add_version_component() API routine and the
     AddVersionPlatform core directive.  The first allows modules to
     declare themselves in the Server response header field value,
     augmenting the SERVER_SUBVERSION define in the Configuration file
     with run-time settings (more useful in a loadable-module environment).
     AddVersionPlatform inserts a comment such as "(UNIX)" or "(Win32)"
     into the server version string.  [Ken Coar] PR#2056

  *) Minor stability tweaks to avoid core dumps in ap_snprintf.
     [Martin Kraemer]

  *) Emit the "Accept-Range" header for the default handler.
     [Brian Behlendorf] PR#1464

  *) Add a note to httpd.conf-dist that apache will on some systems fail
     to start when the Group # is set to a negative or large positive value.
     [Martin Kraemer]

  *) Make sure the module execution order is correct even when some modules
     are loaded under runtime (`LoadModule') via the DSO mechanism:
     1. The list of loaded modules is now a dynamically allocated one
        and not the original statically list from modules.c
     2. The loaded modules are now correctly setup by LoadModule for
        later use by the AddModule command.
     3. When the DSO mechanism for modules is used APACI's `install'
        target now enables all created `LoadModule' lines per default because
        this is both already expected by the user _and_ needed to avoid
        confusion with the next point and reduces the Makefile.tmpl complexity
     4. When the DSO mechanism for modules is used, APACI's `install'
        target now additionally makes sure the module list is reconstructed
        via a complete `ClearModuleList+AddModule...' entry.
     5. The support tool `apxs' now also makes sure an AddModule command
        is added in addition to the LoadModule command.
     6. The modules.c generation was extended to now contain two
        comments to make sure no one is confused by the confusing terminology
        of loading/linking (we use load=link+load & link=activate instead of
        the obvious load=activate & link=link :-( )
     This way now there is no longer a difference under execution time between
     statically and dynamically linked modules.
     [Ralf S. Engelschall]

  *) Fix the generated mod_xxx.c from "apxs -g -f xxx" after the
     Big Symbol Renaming. [Ralf S. Engelschall]

  *) Add a comment to mod_example.c showing the format of a FLAG command
     handler.  [Ken Coar]

  *) Standardized the time format in mod_status to match that of other 
     places in the code (e.g. DATE_GMT).  PR#1551

  *) Fix handling of %Z in timefmt strings for those platforms with no time
     zone information in their tm struct. [Paul Eggert <eggert@twinsun.com>]
     PR#754

  *) Makes mod_rewrite, mod_log_config, mod_status and the ServerSignature 
     feature compatible with 'UseCanonicalName off' by changing  
     r->server->server_hostname to ap_get_server_name().  And I changed some 
     functions which use r->server->port to use ap_get_server_port() instead, 
     because if there's no Port directive in the config r->server->port is 0.
     [Lars Eilebrecht]

  *) get/set_module_config are trivial enough to be better off inline.  Worth
     1.5% performance boost. [Dean Gaudet]

  *) Fix off-by-one error in ap_proxy_date_canon() in proxy_util.c
     when ensuring 'x' is at least 30-chars big. [Jim Jagielski,
     Brian Behlendorf]

  *) [BS2000 security] BS2000 needs an extra authentication to initialize
     the task environment to the unprivileged User id. Otherwise CGI scripts
     would have a way to gain super user access. [Martin Kraemer]

  *) Fix debug log messages for BS2000/OSD: instead of logging the whole
     absolute path, only log base name of logging source as is done
     in unix. [Martin Kraemer]

  *) Ronald Tschalaer's Accept-Encoding patch - preserve the "x-" in
     the encoding type from the Accept-Encoding header (if it's there)
     and use it in the response, as that's probably what it'll be expecting.
     [Ronald.Tschalaer@psi.ch]

  *) Fix to mod_alias: translate_alias_redir is dealing with
     a URI, not a filename, so the check for drive letters for win32 
     and emx is not necessary. [Dean Gaudet]

  *) WIN32: Allow .cmd as an executable extension.
     [Kari Likovuori <Kari.Likovuori@mol.fi>] PR#2146

  *) Make Apache header files, and some variables, C++ friendly.
     [Michael Anderson's <mka@redes.int.com.mx>]

  *) Child processes can now "signal" (by exiting with a status
     of APEXIT_CHILDFATAL) the parent process to abort and
     shutdown the server if the error in the child process was
     fatal enough. [Jim Jagielski]

  *) mod_autoindex's find_itme() was sensitive to MIME type case.
     [Jim Jagielski] PR#2112

  *) Make sure the referer_log and agent_log entries in the default httpd.conf
     file are also adjusted for the actual relative installation paths.
     [Ralf S. Engelschall] PR#2175

  *) WIN32: Extensive overhaul of the way UNCs are handled. [Ben Laurie]

  *) WIN32: Make roots of filesystems (e.g. c:/) work. [Ben Laurie]
     PR#1558

  *) PORT: Various porting changes to support AIX 3.2, 4.1.5, 4.2 and 4.3.
     Additionally the checks for finding the vendor DSO library were moved
     from mod_so.c to Configure because first it needs $PLAT etc. and second
     mod_so already uses an abstraction layer and does not fiddle with the
     vendor functions itself.
     [Jens-Uwe Mager, Ralf S. Engelschall]

  *) PORT: Some optimization defines for NetBSD
     [Jaromir Dolecek <dolecek@ics.muni.cz>] PR#2165

  *) PORT: Dynamic Shared Object (DSO) support for NetBSD.
     [Jaromir Dolecek <dolecek@ics.muni.cz>, Ralf S. Engelschall] PR#2158

  *) Add Dynamic Shared Object (DSO) support for AIX (at least 4.2 but older
     AIX variants should work fine, too. Even AIX 3.x should work). This is
     accomplished by using the free DSO emulation code from Jens-Uwe Mager
     which we put into a os/unix/os-dso-aix.c file.
     [Ralf S. Engelschall]
  
  *) PORT: Fix compiler warnings under AIX >= 4.2 where the manual pages imply
     that we should use NET_SIZE_T == int but the include files force size_t.
     [Ralf S. Engelschall]

  *) Fix two bugs in select() handling in http_main.c.
     [Roy Fielding]

  *) Suppress "error(0)" messages for ap_log_error() when the APLOG_NOERRNO
     is unset (as it is in situations like timeouts) where it is unclear
     whether errno is set or not.  [Martin Kraemer]

  *) Just having APACI's localstatedir is too general and not enough for most
     of the systems. 1.3b6 again required manual APACI patches by package
     maintainers from RedHat and FreeBSD because for their filesystem layout a
     little bit more flexibility in configuring the paths is needed. Hence we
     provide three additional configure options (--runtimedir, --logfiledir,
     --proxycachedir) which now can be used for more granular adjustments if
     --localstatedir is not enough to fit the particular needs. As a nice
     side-effect this reduces some subdir fiddling in configure+Makefile.tmpl.
     [Ralf S. Engelschall]

  *) Make the install root for "make install" in APACI's Makefile overrideable
     by package authors.  This way we are even more friendly to package
     maintainers (especially Debian and RedHat) who build for the real prefix
     via "configure --prefix=/<real>" but use a different local prefix via
     "make root=/tmp/apache install" for rolling the package without bristling
     the target location on their system. 
     [Ralf S. Engelschall]

  *) Workaround sed limitations in APACI's configure script by now
     substituting in chunks of 50 commands (because for instance HPUX's vendor
     sed has a limit of max. 98 commands)
     [Ralf S. Engelschall] PR#2136

  *) Adding SOCKS5 support and fixing existing SOCKS4 support.
     [Ralf S. Engelschall] PR#2140

  *) Manually fix some symbols which were not renamed to prefix ap_ in the BIG
     RENAMING process because they are defined as pre-processor macros instead
     of real functions: bputc, bgetc, piped_log_write_fd, piped_log_read_fd
     [Ralf S. Engelschall]

  *) Workaround braindead AWK's when generating ap_config.h: The split() and
     substr() functions cannot be nested under vendor AWK from Solaris 2.6.
     [Ralf S. Engelschall] PR#2139

  *) Various bugfixes and cleanups for the APACI configure script:
     o fix IFS handling for _nested_ situation
     o fix Perl interpreter search: take first one found instead of last one
     o fix DSO consistency check
     o print error messages to stderr instead of stdout
     o add install-quiet for --shadow situation to Makefile stub
     o reduce complexity by avoiding sed-hacks for rule and module list loops
     [Ralf S. Engelschall]

  *) Fix DEBUG_CGI situation in mod_cgi.c [David MacKenzie] PR#2114

  *) Make sure the input field separator (IFS) shell variable is explicitly
     initialized correctly before _every_ `for' loop and also restored after
     the loops. [Ralf S. Engelschall]

  *) Make sure that "make install" doesn't overwrite the `mime.types' and
     `magic' files from an existing Apache installation. Because people often
     customize these for own MIME and content types.
     [Ralf S. Engelschall]

  *) PORT: Dynamic Shared Object (DSO) support for OpenBSD 2.x
     [Peter Galbavy, Ralf S. Engelschall] PR#2109

  *) Fix the path to the ScoreBoardFile in the install-config target, too.
     [Ralf S. Engelschall] PR#2105

  *) Let "configure" clear out the users parameters (provided as shell
     variables) to avoid side-effects in "src/Configure" when the user
     exported them (which is not needed, but some users do it). 
     [Ralf S. Engelschall] PR#2101

  *) Provide backward compatibility from some old src/Configuration.tmpl
     parameter names to the canonical Autoconf-style shell variable names. For
     instance CFLAGS vs. EXTRA_CFLAGS. The EXTRA_xxx variants are accepted now
     but a hint message is displayed. [Ralf S. Engelschall]
  
  *) Make sure that "make install" doesn't overwrite the DocumentRoot and
     CGI scripts from an existing Apache installation. 
     [Ralf S. Engelschall, Jim Jagielski] PR#2084

  *) Make `configure --compat' more "compatible" by first 
     let the libexecdir default to EPREFIX/libexec instead of EPREFIX/bin and
     second by making sure the "avoid-bristling-suffix" /apache is not
     appended to sysconfdir, datadir, localstatedir and includedir when
     --compat is used. [Ralf S. Engelschall, Lars Eilebrecht]

  *) NeXT required strdup() in support/logresolve.c
     [Francisco Tomei <fatomei@sandburg.unm.edu>] PR#2082

  *) AIX required sys/select.h in support/ab.c
     [Jens Schleusener <Jens.Schleusener@dlr.de>] PR#2081

  *) Fix the path to the MimeMagicFile in the install-config target, too.
     [Ralf S. Engelschall] PR#2089

  *) PORT: Added HP-UX 11 patches [Jeff Earickson <jaearick@colby.edu>]

  *) If you start apache with the -S command line option it will dump
     out the parsed vhost settings.  This is useful for folks trying
     to figure out what is wrong with their vhost configuration.
     (Other dumps may be added in the future.) [Dean Gaudet]

  *) Add %pA, %pI, and %pp codes to ap_vformatter (and hence ap_bprintf,
     ap_snprintf, and ap_psprintf).  See include/ap.h for docs.
     [Dean Gaudet]

  *) Because /usr/local/apache is the default prefix the ``configure
     --compat'' option no longer has to set prefix, again. This way the
     --compat option honors a leading --prefix option. [Lars Eilebrecht]

  *) PORT: Cast the first argument of dlopen() in ap_os_dso_load()
     to `char *' under OSF1 and FreeBSD 2.x where it is defined this way
     to avoid "discard const" warnings. [Ralf S. Engelschall]

  *) If a specific handler is set for a file yet the request still
     ends up being handled by the default handler, log an error
     message before handling it.  This catches things such as trying 
     to use SSIs without mod_include enabled.  [Marc Slemko]

  *) Fix error logging for the startup case where ap_log_error() still uses
     stderr as the target. Now the default log level is honored here, too.
     [Ralf S. Engelschall]
    
  *) PORT: Make sure some AWK's don't fail in src/Configure with "string too
     long" errors when generating the MODULES entry for src/Makefile
     [Ben Hyde, Ralf S. Engelschall]

  *) Make sure src/Configure doesn't complain about the old directory
     /usr/local/etc/httpd/ when APACI is used.  [Lars Eilebrecht]
   
Changes with Apache 1.3b6

  *) PORT: Clean up warnings on Ultrix and HPUX.  [Ben Hyde]
 
  *) Adding DSO support for the HP/UX platform by emulating the dlopen-style
     interface via the similar but proprietary HP/UX shl_xxx-style system
     calls. [Ralf S. Engelschall]

  *) PORT: Updated UnixWare 2.0.x and 2.1.x entries for DSO support and made
     APACI Makefile.tmpl "install" target more robust for sensible UnixWare
     Make. [Ralf S. Engelschall]

  *) ++++ THE BIG SYMBOL RENAMING ++++
     To avoid symbol clashes with third-party code compiled into the server,
     we globally applied the prefix "ap_" to the following classes of
     functions:
        - Apache provided general functions (e.g., ap_cpystrn)
        - Public API functions (e.g., palloc, bgets)
        - Private functions which we can't make static (because of
          cross-object usage) but should be (e.g., new_connection)
     For backward source compatibility a new header file named compat.h was
     created which provides defines for the old symbol names and can be used
     by third-party module authors.
     [The Apache Group]

  *) Added dynamic shared object (DSO) support for SVR4-derivates: The
     problem under SVR4 is that there is no command flag to force the linker
     to export the global symbols of the httpd executable therewith they are
     available to the DSO's. Instead of problematic hacks like creating a
     dummy.so file (containing dummy references to all global symbols) the
     httpd binary is linked against, we use a clean trick stolen from Perl 5:
     Placing the Apache core code itself into a DSO library named libhttpd.so.
     This way the global symbols _HAVE_ to be exported and thus are available
     to any manually loaded DSO's under runtime. To reduce the impact to the
     user to null we go even further and create a stub httpd executable which
     automatically keeps track of the DSO library loading itself and thus
     hides the complete mechanism from the user. Although the generation of
     this DSO library is automatically triggered for platforms which
     essentially need it (mostly all SVR4-derivates) it can be also enabled
     manually via the Rule SHARED_CORE. This can be interesting in the future
     where we perhaps exploit this libhttpd.so mechanism for providing nifty
     features like graceful upgrades, or whatever. 
     [Ralf S. Engelschall, Martin Kraemer]

  *) Build the libraries before building the rest of the tools. [Ben Hyde]

  *) Add "distclean" target to src/-Makefiles to provide "make distclean" also
     inside the src subtree (i.e. for non-APACI users). Following GNU Makefile
     conventions while "clean" removes only stuff created by "all" targets,
     "distclean" additionally removes the stuff from the configuration
     process. This way "make distclean" (hence the name) provides a fresh
     source tree as it was for distribution.
     [Ralf S. Engelschall]

  *) Allow top-level (APACI) Makefile to break on build errors
     the same way the src/ subtree Makefiles breaks on them by replacing the
     initial APACI sed-subdir-display-kludge with a more clean
     variable-passing-solution: variable SDP can optionally hold the subdir
     prefix which is consistently used for displaying the subdir movement.
     This way even the top-level Makefile can stop correctly on errors as the
     user expects. [Ralf S. Engelschall]

  *) Fixed ordering of argument checks for RewriteBase directive.
     [Todd Eigenschink <eigenstr@mixi.net>] PR#2045

  *) Change Win32 IS_MODULE to SHARED_MODULE to match Unix' method of
     indicating that a module is being compiled for dynamic loading. Also
     remove #define IS_MODULE from modules and add SHARED_MODULE define
     to the mak/dsp files. [Alexei Kosut]

  *) Reduce logging level of "normal" warning messages to APLOG_INFO,
     since we are now logging APLOG_WARNING by default. [Roy Fielding]

  *) PORT: OS/2 tweak to deal with multiple .exe targets. [Brian Havard]
 
  *) Add documentation file and src/Configuration.tmpl entry for the
     experimental mod_mmap_static module. Because although it is and marked as
     an experimental one it is distributed and thus should be documented and
     prepared for configuration the same way as all others modules. 
     [Ralf S. Engelschall]

  *) Add query (-q) option to apxs support tool to be able to manually query
     specific settings from apxs. This is needed for instance when you
     manually want to access Apache's header files and you need to assemble
     the -I option.  Now you can do -I`apxs -q INCLUDEDIR`.
     [Ralf S. Engelschall]

  *) Now src/Configure uses a fallback strategy for the shared object support
     on platforms where no explicit information is available: If a Perl
     installation exists we ask it about its shared object support and if it's
     the dlopen-style one we shamelessly guess the compiler and linker flags
     for creating shared objects from Perls knowledge. Of course, the user is
     warning about what we are doing and informed that he should send us
     the guessed flags when they work. [Ralf S. Engelschall]

  *) Provide APACI --without-support option to be able to disable the build
     and installation of the support tools from the src/support/ area.
     Although its useful to have these installed per default we should provide
     a way to compile and install without them for backward-compatibility.
     [Ralf S. Engelschall]

  *) Add of the new APache eXtenSion (apxs) support tool for building and
     installing modules into an _already installed_ Apache package through the
     dynamic shared object (DSO) mechanism [mod_so.c]. The trick here is that
     this approach actually doesn't need the Apache source tree.  The
     (APACI-installed) server package is enough, because this now includes the
     Apache C header files (PREFIX/include) and the new APXS tool
     (SBINDIR/apxs).  The intend is to provide a handy tool for third-party
     module authors to build their Apache modules _OUTSIDE_ the Apache source
     tree while avoiding them to fiddle around with the totally platform
     dependend way of compiling DSO files. The tool supports all ranges of
     modules, from trivial ones (single mod_foo.c) to complex ones (like PHP3
     which has a mod_php3.c plus a pre-built libmodphp3-so.a) and even can
     on-the-fly generate a minimalistic Makefile and sample module for the
     first step to provide both a quick success event and to demonstrate the
     APXS mechanism to module authors. [Ralf S. Engelschall]

  *) Fix core dumps in use of CONNECT in proxy.  
     [Rainer.Scherg@rexroth.de] PR#1326, #1573, #1942

  *) Modify the log directives in httpd.conf-dist files to use CustomLog
     so that users have examples of how CustomLog can be used.
     [Lars Eilebrecht]

  *) Add the new Apache Autoconf-style Interface (APACI) for the top-level of
     the Apache distribution tree.  Until Apache 1.3 there was no real
     out-of-the-box batch-capable build and installation procedure for the
     complete Apache package. This is now provided by a top-level "configure"
     script and a corresponding top-level "Makefile.tmpl" file.  The goal is
     to provide a GNU Autoconf-style frontend which is capable to both drive
     the old src/Configure stuff in batch and additionally installs the
     package with a GNU-conforming directory layout. Any options from the old
     configuration scheme are available plus a lot of new options for flexibly
     customizing Apache. [Ralf S. Engelschall]

  *) The floating point ap_snprintf code wasn't threadsafe.
     Had to remove the HAVE_CVT macro in order to do threadsafe
     calling of the ?cvt() floating point routines.  [Dean Gaudet]

  *) PORT: Add the SCO_SV port. [Jim Jagielski] PR#1962

  *) PORT: IRIX needs the -n32 flag iff using the 'cc' compiler
     [Jim Jagielski] PR#1901

  *) BUG: Configure was using TCC and CC inconsistently. Make sure
     Configure knows which CC we are using. [Jim Jagielski]

  *) "Options +Includes" wasn't correctly merged if "+IncludesNoExec"
     was defined in a parent directory. [Lars Eilebrecht]

  *) API: ap_snprintf() code mutated into ap_vformatter(), which is
     a generic printf-style routine that can call arbitrary output
     routines.  Use this to replace http_bprintf.c.  Add new routines
     psprintf(), pvsprintf() which allocate the exact amount of memory
     required for a string from a pool.  Use psprintf() to clean up
     various bits of code which used ap_snprintf()/pstrdup().
     [Dean Gaudet]

  *) PORT: HAVE_SNPRINTF doesn't do anything any longer.  This is because
     ap_snprintf() has different semantics and formatting codes than
     snprintf().  [Dean Gaudet]

  *) SIGXCPU and SIGXFSZ are now reset to SIG_DFL at boot-time.  This
     is necessary on at least Solaris where the /etc/rc?.d scripts
     are run with these signals ignored, and "SIG_IGN" settings are
     maintained across exec().
     [Rein Tollevik <reint@sys.sol.no>] PR#2009

  *) Fix the check for symbolic links in ``RewriteCond ... -l'': stat() was
     used instead of lstat() and thus this flag didn't work as expected.
     [Rein Tollevik <reint@sys.sol.no>] PR#2010

  *) Fix the proxy pass-through feature of mod_rewrite for the case of
     existing QUERY_STRING now that mod_proxy was recently changed because of
     the new URL parsing stuff. [Ralf S. Engelschall]

  *) A few changes to scoreboard definitions which helps gcc generate
     better code.  [Dean Gaudet]
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