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  *) mod_proxy: multiple bugfixes, principally support cookies in
     ProxyPassReverse, and don't canonicalise URL passed to backend.
     Documentation correspondingly updated. [Nick Kew <nick webthing.com>]

  *) mod_deflate: support gzip flags in inflate_out_filter
     [Nick Kew <nick webthing.com>]

  *) Drop the ErrorHeader directive which turned out to be a misnomer.
     Instead there's a new optional flag for the Header directive
     ('always'), which keeps the former ErrorHeader functionality.
  *) mod_deflate: Don't deflate responses with zero length 
     e.g. proxied 304's [Allan Edwards]

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  *) <IfModule> now recognizes the module identifier in addition to the
     file name. PR 29003.  [Edward Rudd <eddie omegaware.com>, André Malo]
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  *) mod_ssl: Add "SSLHonorCipherOrder" directive to enable the
     OpenSSL 0.9.7 flag which uses the server's cipher order rather
     than the client's.  PR 28665.
     [Jim Schneider <jschneid netilla.com>]
  *) mod_ssl: Drop support for the CompatEnvVars argument to
     SSLOptions, which was never actually implemented in 2.0.
     [Joe Orton]

  *) Fix bug in mod_deflate that unconditionally sent deflate'd output
     even when Accept-Encoding is not present.  [Justin Erenkrantz]

  *) Pass environment variables through to piped loggers and start
     them via the shell, resolving regressions since 1.3.  PR 28815
     [Ken Coar, Jeff Trawick]
  *) External rewrite map responses are no longer limited to 2048
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  *) Proxy server was deleting cookies that Apache had already
     assigned if the origin server had set any cookies. PR 27023.
     [Jim Jagielski]

  *) Removed old and unmaintained ap_add_named_module API and changed
     the following APIs to return an error instead of hard exiting:
     ap_add_module, ap_add_loaded_module, ap_setup_prelinked_modules,
     and ap_process_resource_config.  [André Malo]
  *) mod_headers: Allow %% in header values to represent a literal %.
  *) mod_headers: Allow env clauses also for 'echo' and 'unset' actions.
  *) mod_headers: Allow 'echo' also for ErrorHeaders.  [André Malo]
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  *) mod_deflate: New option for DEFLATE output file (force-gzip),
     new output filter 'INFLATE' for uncompressing responses.
     [Nick Kew <Nick at WebThing dot com>, Ian Holsman]

  *) Added new module mod_version, which provides version dependent
     configuration containers.  [André Malo]
  *) mod_log_config now logs all Set-Cookie headers if the %{Set-Cookie}o
     format is used.  PR 27787.  [André Malo]
  *) Allow Digest providers to return AUTH_DENIED to propagate a 401
     status and terminate the provider chain prior to checking the password.
     [Geoffrey Young]

  *) mod_cgid: Don't allow Scriptsock to be specified inside VirtualHost;
     Don't place script socket inside default server root instead of
     actual server root.  PR 27886.  [Jeff Trawick]

  *) mod_proxy: Fix handling of non-200 success status codes when
     "ProxyErrorOverride On" is configured.  PR 20183.
     [Marcus Janson <marcus.janson tre.se>, Joe Orton]

  *) Threaded MPMs for Unix and Win32: Add support for ThreadStackSize 
     directive (previously NetWare-only) to override default thread 
     stack size for threads which handle client connections.  Required 
     for some third-party modules on platforms with small default 
     thread stack size.  [Jeff Trawick]
  *) minor mod_auth_basic and mod_auth_digest sync.  mod_auth_basic
     now populates r->user with the (possibly unauthenticated) user,
     and mod_auth_digest returns 500 when a provider returns
     AUTH_GENERAL_ERROR.
     [Geoffrey Young]

  *) The whole codebase was relicensed and is now available under
     the Apache License, Version 2.0 (http://www.apache.org/licenses).
     [Apache Software Foundation]

  *) Delete some make-generated files in the server directory during 
     "make clean" processing.  PR 26552.  [Jeff Trawick]

  *) Add core version query function (ap_get_server_revision) and
     accompanying ap_version_t structure (minor MMN bump).
  *) mod_rewrite: EOLs sent by external rewritemaps are now consumed
     as whole. That way, on systems with more than one EOL character
     rewritemap programs no longer need to switch stdout to binary
  *) mod_rewrite: Introduce the ability to force a content handler via
     the [handler=...] flag.  [André Malo]
  *) mod_rewrite: Introduce the RewriteCond -x check, which returns
     true if the pattern is a file with execution permissions.
  *) mod_rewrite: Allow proxying and RewriteRules in directory context
     for subrequests.  PR 14648, 15114.  [André Malo]
  *) mod_rewrite: Allow setting of any valid HTTP response code.
  *) mod_rewrite: Cookie creation now works locale independent.
  *) mod_ssl: Add support for distributed session cache using 'distcache'.
     [Geoff Thorpe <geoff geoffthorpe.net>]

  *) mod_dav: Disallow requests with an unescaped hash character in
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     the Request-URI.  PR 21779.  [Amit Athavale <amit_athavale lycos.com>]
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  *) mod_proxy with ProxyErrorOverride On in a reverse-proxy configuration
     attaches a body to the 302 response and a wrong Content-Length header.
     PR: 22951 [Ermanno Scaglione scaglione ..at.. starnetone.de]

  *) Bring ErrorHeader concept forward from 1.3, so that response
     header fields can be set for return even on errors or external
     redirects.  [Ken Coar]

  *) Fix <Limit> and <LimitExcept> parsing to require a closing '>' 
     in the initial container.  PR 25414. 
     [Geoffrey Young <geoff apache.org>]

  *) Clean up httpd -V output: Instead of displaying the MPM source
     directory, display the MPM name and some MPM properties.
     [Geoffrey Young <geoff apache.org>]

  *) mod_ssl/mod_status: Re-enable support for output of SSL session
     cache information in server-status page.  [Joe Orton]

  *) mod_ssl: Remove the shmht session cache, shmcb should be used
     instead.  [Joe Orton]

  *) mod_logio: Account for some bytes handed to the network layer prior to
     dropped connections.  [Jeff Trawick]

  *) mod_autoindex: new directive IndexStyleSheet 
    [Tyler Riddle <triddle_1999 yahoo.com>, Paul Querna <chip force-elite.com>]

  *) Fix uninitialized gprof directory name in prefork MPM.  PR 24450.
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     [Chris Knight <Christopher.D.Knight nasa.gov>]
  *) Log an error when requests for URIs which fail to map to a valid 
     filesystem name are rejected with 403.  [Jeff Trawick]

  *) Switch to APR 1.0 API.

  *) Major overhaul of mod_include's filter parser. The new parser code
     is expected to be more robust and should catch all of the edge cases
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     that were not handled by the previous one. This includes a binary
     incompatible change of mod_include's external API.  [André Malo]
  *) mod_rewrite: Allow forced mimetypes [T=...] to get expanded.
  *) mod_rewrite: Fix LA-U and LA-F lookups in directory context. Previously
     the current rewrite state was just used as lookup path, which lead to
     strange and often useless results. Related to PR 8493.  [André Malo]
  *) Change Listen directive to bind to all addresses when a hostname is
     not specified.  [Justin Erenkrantz]

  *) Correct failure with Listen directives on machines with IPv6 enabled.
     [Colm MacCárthaigh <colm stdlib.net>, Justin Erenkrantz]
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  *) Fix a link failure in mod_ssl when the OpenSSL libraries contain
     the ENGINE functions but the engine header files are missing.
     [Cliff Woolley]

  *) mod_rewrite: RewriteRules in server context using the force
     type feature [T=...] no longer disable MultiViews.  [André Malo]
  *) mod_rewrite: Allow piped rewrite logs to be relative to ServerRoot.
  *) mod_authz_groupfile: Strip trailing spaces of group names. This
     hopefully saves some hours of searching for typos. PR 12863.
  *) mod_actions: Propagate the handler name to the action script via
     the REDIRECT_HANDLER environment variable.  [André Malo]
  *) mod_actions: Introduce the "virtual" modifier to the Action directive,
     which allows the use of handlers for virtual locations. PR 8431.
  *) mod_speling: Recognize AcceptPathInfo setting for the particular
     location. Default is to reject path information. PR 21059.
  *) mod_ext_filter: Add the ability to filter request bodies.
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     [Philipp Reisner <philipp.reisner linbit.com>]
  *) Fix some broken log messages in WinNT MPM.  
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     [Juan Rivera <Juan.Rivera citrix.com>]
  *) prefork MPM: Use the right permissions for the directory created 
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     for gprof support.  [Jim Carlson <jcarlson jnous.com>]
  *) Fix a compile failure with recent OpenSSL and picky compilers
     (e.g., OpenSSL 0.9.7a and xlc_r on AIX).  [Jeff Trawick]

  *) OpenSSL headers should be included as "openssl/ssl.h", and not rely on
     the INCLUDE path to be defined properly.
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     PR 11310. [Geoff Thorpe <geoff geoffthorpe.net>]
  *) Modify APACHE_CHECK_SSL_TOOLKIT to detect SSL-C. [Madhusudan Mathihalli]
  *) Replace the APACHE_CHECK_SSL_TOOLKIT method with a cleaner one, using
     autoconf tools (AC_CHECK_HEADER, AC_CHECK_LIB etc). 
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     [Geoff Thorpe <geoff geoffthorpe.net>]
  *) change directive name from 'compressionlevel' to 'deflatecompressionlevel'
  *) mod_negotiation: quality values are now parsed independent from
     the current locale. level values are now really parsed as integers.
  *) Extend mod_negotiation to evaluate the environment variables
     no-gzip and gzip-only-text/html the same way as mod_deflate does.
  *) mod_rewrite: Fix some problems reporting errors with mapping
     programs (RewriteMap prg:/something).  [Jeff Trawick]

  *) Return 413 if chunk-ext-header is too long rather than reading from
     the truncated line.  PR 15857.  [Justin Erenkrantz]

  *) Allow restart of httpd to occur even with syntax errors in the config
     file.  PR 16813.  [Justin Erenkrantz]

  *) Use APR_LAYOUT instead of APACHE_LAYOUT in configure.  PR 15679.
     [Justin Erenkrantz]

  *) Remove files on 'make distclean' that should be.  PR 15592.
     [Justin Erenkrantz]

  *) Allow apachectl to perform status with links and elinks as well.
     [Justin Erenkrantz]

  *) mod_log_config change optional hook to return previous handler
     [Ian Holsman]

  *) Forward port of mod_actions' ability to handle arbitrary methods
     with the Script directive.  [André Malo]
  *) Let suexec send a message to stderr, if it failed or its policy
     was violated. This message appears in the error log and allows
     for easier debugging. PR 5381, 7638, 8255, 10773.  [André Malo]
  *) Modify buildconf to copy all required files into httpd's tree.
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     [Thom May <thom planetarytramp.net>]
  *) Allow mod_dav to do weak entity comparison functions.
     [Justin Erenkrantz]

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  *) Move RFC 1413 ident requests from core to new module mod_ident.
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  *) Add mod_authz_owner - a forward port of "Require file-owner"
     and "Require file-group", which was already present in version
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  *) Add mod_dav_lock - a generic subset of the DAV locking implementation.
     [Justin Erenkrantz]

  *) Replace some of the mutex locking in the worker MPM with
     atomic operations for higher concurrency.  [Brian Pane]

  *) Allow 'make depend' to work with non-GCC compilers.
     [Justin Erenkrantz]

  *) If an httpd.conf has commented out AddModule directives, 
     apxs -i -a will add an un-commented AddModule directive for 
     the new module, which breaks the config.
     PR: 11212 [Joe Orton]
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  *) Fix mod_proxy handling of filtered input bodies.  [Justin Erenkrantz]

  *) Move the check of the Expect request header field after the hook
     for ap_post_read_request, since that is the only opportunity for
     modules to handle Expect extensions.  [Justin Erenkrantz]

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  *) Rewrite of aaa modules to an authn/authz model.
     [Dirk-Willem van Gulik, Justin Erenkrantz]

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  [Apache 2.1.0-dev includes those bug fixes and changes with the
   Apache 2.0.xx tree as documented, and except as noted, below.]

  *) SECURITY: CVE-2005-3357 (cve.mitre.org)
     mod_ssl: Fix a possible crash during access control checks if a
     non-SSL request is processed for an SSL vhost (such as the
     "HTTP request received on SSL port" error message when an 400
     ErrorDocument is configured, or if using "SSLEngine optional").
     PR 37791.  [Rüdiger Plüm, Joe Orton]

  *) SECURITY: CVE-2005-3352 (cve.mitre.org)
     mod_imap: Escape untrusted referer header before outputting in HTML
     to avoid potential cross-site scripting.  Change also made to
     ap_escape_html so we escape quotes.  Reported by JPCERT.
     [Mark Cox]

  *) mod_speling: Stop crashing with certain non-file requests.
     [Jeff Trawick]

  *) keep the Content-Length header for a HEAD with no response body.
     PR 18757 [Greg Ames]

  *) Modify apr[util] .h detection to avoid breakage on VPATH builds
     using Solaris make (amoung others) and avoid breakage in ./buildconf
     when srclib/apr[-util] are symlinks rather than directories proper.
     [William Rowe]

  *) Avoid server-driven negotiation when a CGI script has emitted an
     explicit "Status:" header. PR 38070.  [Nick Kew]

  *) mod_log_config now logs all Set-Cookie headers if the %{Set-Cookie}o
     format is used. PR 27787.  [André Malo]

  *) mod_cgid: Refuse to work on Solaris 10 due to OS bugs.  PR 34264.
     [Justin Erenkrantz]

  *) mod_cache: Correctly handle responses with a 301 status. PR 37347.
     [Paul Querna]

  *) mod_proxy_http: Prevent data corruption of POST request bodies when
     client accesses proxied resources with SSL. PR 37145.
     [Ruediger Pluem, William Rowe]

  *) Elimiated the NET_TIME filter, restructuring the timeout logic.
     This provides a working mod_echo on all platforms, and ensures any
     custom protocol module is at least given an initial timeout value
     based on the <VirtualHost > context's Timeout directive.
  *) mod_ssl: Correct issue where mod_ssl does not pick up the
     ssl-unclean-shutdown setting when configured. PR 34452. [Joe Orton]

  *) Document the ReceiveBufferSize change done in r157583 [Murray
     Nesbitt <murray@cpan.org>]

  *) mod_deflate: Merge the Vary header, instead of Setting it. Fixes
     applications that send the Vary Header themselves. PR 37559.
     [Paul Querna]

  *) mod_dav: Fix a null pointer dereference in an error code path during the
     handling of MKCOL. [Ghassan Misherghi <ghassanm ucdavis.edu>]

  *) mod_mime_magic: Handle CRLF-format magic files so that it works with
     the default installation on Windows.  [Jeff Trawick]

  *) Write message to error log if AuthGroupFile cannot be opened.
     PR 37566.  [Rüdiger Plüm]

  *) Add ReceiveBufferSize directive to control the TCP receive buffer.
     [Eric Covener <covener gmail.com>]

  *) mod_cache: Fix 'Vary: *' behavior to be RFC compliant. PR 16125.
     [Paul Querna]

  *) Remove the base href tag from proxy_ftp, as it breaks relative
     links for clients not using an Authorization header. [Graham Leggett,
     Jon Snow <jsnow27 gatesec.net>]

  *) http_request.c: Add missing va_end call. [André Malo]

  *) Add httxt2dbm to support/ for creating RewriteMap DBM Files.
     [Paul Querna]

  *) support/check_forensic: Fix temp file usage
     [Javier Fernandez-Sanguino Pen~a <jfs computer.org>]

  *) Chunk filter: Fix chunk filter to create correct chunks in the case that
     a flush bucket is surrounded by data buckets. [Ruediger Pluem]

  *) mod_cgi(d): Remove block on OPTIONS method so that scripts can
     respond to OPTIONS directly rather than via server default.
     [Roy Fielding] PR 15242

  *) Added new module mod_version, which provides version dependent
     configuration containers.  [André Malo]

  *) Add core version query function (ap_get_server_revision) and
     accompanying ap_version_t structure (minor MMN bump).
     [André Malo]

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Changes with Apache 2.0.55
  *) SECURITY: CVE-2005-2088 (cve.mitre.org)
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     proxy: Correctly handle the Transfer-Encoding and Content-Length
     headers.  Discard the request Content-Length whenever T-E: chunked
     is used, always passing one of either C-L or T-E: chunked whenever 
     the request includes a request body.  Resolves an entire class of
     proxy HTTP Request Splitting/Spoofing attacks.  [William Rowe]

  *) Added TraceEnable [on|off|extended] per-server directive to alter
     the behavior of the TRACE method.  This addresses a flaw in proxy
     conformance to RFC 2616 - previously the proxy server would accept
     a TRACE request body although the RFC prohibited it.  The default
     remains 'TraceEnable on'.  [William Rowe]

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  *) Add ap_log_cerror() for logging messages associated with particular
     client connections.  [Jeff Trawick]

  *) Correct mod_cgid's argv[0] so that the full path can be delved by the
     invoked cgi application, to conform to the behavior of mod_cgi.
     [Pradeep Kumar S <pradeep.smani gmail.com>]

  *) mod_include: Fix possible environment variable corruption when 
     using nested includes.  PR 12655.  [Joe Orton]

  *) Support the suppress-error-charset setting, as with Apache 1.3.x.
     PR 31274.  [Jeff Trawick]

  *) EBCDIC: Handle chunked input from client or, with proxy, origin
     server.  [Jeff Trawick]

  *) Fix bad globbing comparison which could result in getting
     a directory listing when a file was requested. PR 34512.
     [sean <infamous41md hotmail.com>]

  *) Fix core dump if mod_auth_ldap's mod_auth_ldap_auth_checker()
     was called even if mod_auth_ldap_check_user_id() was not
     (or if it didn't succeed) for non-authoritative cases.
     [Jim Jagielski]

  *) SECURITY: CVE-2005-2728 (cve.mitre.org)
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     Fix cases where the byterange filter would buffer responses
     into memory.  PR 29962.  [Joe Orton]

  *) mod_proxy: Fix over-eager handling of '%' for reverse proxies.
     PR 15207.  [Jim Jagielski]

  *) mod_ldap: Fix various shared memory cache handling bugs.
     PR 34209.  [Joe Orton]

  *) Fix a file descriptor leak when starting piped loggers.  PR 33748. 
     [Joe Orton]

  *) mod_ldap: Avoid segfaults when opening connections if using a version
     of OpenLDAP older than 2.2.21.  PR 34618.  [Brad Nicholes]

  *) mod_ssl: Fix build with OpenSSL 0.9.8.  PR 35757.  [William Rowe]

  *) SECURITY: CVE-2005-2088 (cve.mitre.org)
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     core: If a request contains both Transfer-Encoding and Content-Length
     headers, remove the Content-Length, mitigating some HTTP Request 
     Splitting/Spoofing attacks.  [Paul Querna, Joe Orton]

  *) proxy HTTP: If a response contains both Transfer-Encoding and a 
     Content-Length, remove the Content-Length and don't reuse the
     connection, mitigating some HTTP Response Splitting attacks.
     [Jeff Trawick]

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  *) Prevent hangs of child processes when writing to piped loggers at
     the time of graceful restart.  PR 26467.  [Jeff Trawick]

  *) SECURITY: CVE-2005-1268 (cve.mitre.org)
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     mod_ssl: Fix off-by-one overflow whilst printing CRL information
     at "LogLevel debug" which could be triggered if configured 
     to use a "malicious" CRL.  PR 35081.  [Marc Stern <mstern csc.com>]

  *) mod_userdir: Fix possible memory corruption issue.  PR 34588.
     [David Leonard <dleonard vintela.com>]

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  *) worker mpm: don't take down the whole server for a transient
     thread creation failure. PR 34514 [Greg Ames]
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  *) mod_rewrite: use buffered I/O to improve performance with large
     RewriteMap txt: files.  [Greg Ames]

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  *) proxy HTTP: Rework the handling of request bodies to handle
     chunked input and input filters which modify content length, and
     avoid spooling arbitrary-sized request bodies in memory.
     PR 15859.  [Jeff Trawick]

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Changes with Apache 2.0.54

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  *) mod_cache: Add CacheIgnoreHeaders directive.  PR 30399.
     [Rüdiger Plüm <r.pluem t-online.de>]
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  *) mod_ldap: Added the directive LDAPConnectionTimeout to configure
     the ldap socket connection timeout value.  
     [Brad Nicholes]

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  *) Correctly export all mod_dav public functions.
     [Branko Čibej <brane xbc.nu>]

  *) Add a build script to create a solaris package. [Graham Leggett]

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  *) worker MPM: Fix a problem which could cause httpd processes to
     remain active after shutdown.  [Jeff Trawick]

  *) Unix MPMs: Shut down the server more quickly when child processes are
     slow to exit.  [Joe Orton, Jeff Trawick]

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  *) Remove formatting characters from ap_log_error() calls.  These
     were escaped as fallout from CVE-2003-0020.
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     [Eric Covener <ecovener gmail.com>]

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  *) mod_ssl: If SSLUsername is used, set r->user earlier.  PR 31418.
     [David Reid]

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  *) htdigest: Fix permissions of created files.  PR 33765.  [Joe Orton]

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  *) core_input_filter: Move buckets to a persistent brigade instead of
     creating a new brigade. This stop a memory leak when proxying a 
     Streaming Media Server. PR 33382. [Paul Querna]

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  *) mod_win32: Ignore both PATH_INFO as well as PATH_TRANSLATED to avoid 
     hiccups from additional path information passed in non-utf-8 format.
     [Richard Donkin <rd9 donkin.org]

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Changes with Apache 2.0.53

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  *) Fix --with-apr=/usr and/or --with-apr-util=/usr.  PR 29740.
     [Max Bowsher <maxb ukf.net>]

  *) mod_proxy: Fix ProxyRemoteMatch directive.  PR 33170.
     [Rici Lake <rici ricilake.net>]

  *) mod_proxy: Respect errors reported by pre_connection hooks.
     [Jeff Trawick]

  *) --with-module can now take more than one module to be statically
     linked: --with-module=<modtype>:<modfile>,<modtype>:<modfile>,...
     If the <modtype>-subdirectory doesn't exist it will be created and
     populated with a standard Makefile.in.  [Erik Abele]

  *) Fix the RPM spec file so that an RPM build now works. An RPM
     build now requires system installations of APR and APR-util.
     Remove some arbitrary moving around of binaries - the RPM now
     maps to the ASF build of httpd.
     [Graham Leggett]

  *) mod_dumpio, an I/O logging/dumping module, added to the
     modules/expermimental subdirectory.  [Jim Jagielski]

  *) mod_auth_ldap: Handle the inconsistent way in which the MS LDAP
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     library handles special characters.  PR 24437.  [Jess Holle]
  *) Win32 MPM: Correct typo in debugging output.  [William Rowe]

  *) conf: Remove AddDefaultCharset from the default configuration because
     setting a site-wide default does more harm than good. PR 23421.
     [Roy Fielding]

  *) Add charset to example CGI scripts.  [Roy Fielding]
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  *) mod_ssl: fail quickly if SSL connection is aborted rather than
     making many doomed ap_pass_brigade calls.  PR 32699.  [Joe Orton]
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  *) Remove compiled-in upper limit on LimitRequestFieldSize.
     [Bill Stoddard]

  *) Start keeping track of time-taken-to-process-request again for
     mod_status if ExtendedStatus is enabled. [Jim Jagielski]

  *) mod_proxy: Handle client-aborted connections correctly.  PR 32443.
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  *) Fix handling of files >2Gb on all platforms (or builds) where
     apr_off_t is larger than apr_size_t.  PR 28898.  [Joe Orton]

  *) mod_include: Fix bug which could truncate variable expansions
     of N*64 characters by one byte.  PR 32985.  [Joe Orton]

  *) Correct handling of certain bucket types in ap_save_brigade, fixing
     possible segfaults in mod_cgi with #include virtual.  PR 31247.
     [Joe Orton]

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  *) Allow for the use of --with-module=foo:bar where the ./modules/foo
     directory is local only. Assumes, of course, that the required
     files are in ./modules/foo, but makes it easier to statically
     build/log "external" modules.  [Jim Jagielski]

  *) Util_ldap: Implemented the util_ldap_cache_getuserdn() API so that 
     ldap authorization only modules have access to the util_ldap 
     user cache without having to require ldap authentication as well.  
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     PR 31898.  [Jari Ahonen jah progress.com, Brad Nicholes]

  *) mod_auth_ldap: Added the directive "Requires ldap-attribute" that
     allows the module to only authorize a user if the attribute value
     specified matches the value of the user object. PR 31913
     [Ryan Morgan <rmorgan pobox.com>]

  *) SECURITY: CVE-2004-0942 (cve.mitre.org)
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     Fix for memory consumption DoS in handling of MIME folded request
     headers.  [Joe Orton]

  *) SECURITY: CVE-2004-0885 (cve.mitre.org)
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     mod_ssl: Fix a bug which allowed an SSLCipherSuite setting to be
     bypassed during an SSL renegotiation.  PR 31505.  
     [Hartmut Keil <Hartmut.Keil adnovum.ch>, Joe Orton]

  *) mod_ssl: Fail at startup rather than segfault at runtime if a
     client cert is configured with an encrypted private key.
     PR 24030.  [Joe Orton]

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  *) apxs: fix handling of -Wc/-Wl and "-o mod_foo.so". PR 31448
     [Joe Orton]
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  *) mod_ldap: Fix format strings to use %APR_PID_T_FMT instead of %d.
     [Jeff Trawick]
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  *) mod_cache: CacheDisable will only disable the URLs it was meant to
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     disable, not all caching. PR 31128.
     [Edward Rudd <eddie omegaware.com>, Paul Querna]

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  *) mod_cache: Try to correctly follow RFC 2616 13.3 on validating stale
     cache responses.  [Justin Erenkrantz]

  *) mod_rewrite: Handle per-location rules when r->filename is unset.
     Previously this would segfault or simply not match as expected,
     depending on the platform.  [Jeff Trawick]

  *) mod_rewrite: Fix 0 bytes write into random memory position.
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  *) mod_disk_cache: Do not store aborted content.  PR 21492.
     [Rüdiger Plüm <r.pluem t-online.de>]
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  *) mod_disk_cache: Correctly store cached content type.  PR 30278.
     [Rüdiger Plüm <r.pluem t-online.de>]
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  *) mod_ldap: prevent the possiblity of an infinite loop in the LDAP
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     statistics display. PR 29216. [Graham Leggett]
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  *) mod_ldap: fix a bogus error message to tell the user which file
     is causing a potential problem with the LDAP shared memory cache.
     PR 31431 [Graham Leggett]

  *) SECURITY: CVE-2004-1834 (cve.mitre.org)
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     mod_disk_cache: Do not store hop-by-hop headers.  [Justin Erenkrantz]
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  *) Fix the re-linking issue when purging elements from the LDAP cache
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     PR 24801.  [Jess Holle <jessh ptc.com>]
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  *) mod_disk_cache: Fix races in saving responses.  [Justin Erenkrantz]

  *) Fix Expires handling in mod_cache.  [Justin Erenkrantz]

  *) Alter mod_expires to run at a different filter priority to allow
     proper Expires storage by mod_cache.  [Justin Erenkrantz]

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Changes with Apache 2.0.52

  *) Use HTML 2.0 <hr> for error pages. PR 30732 [André Malo]

  *) Fix the global mutex crash when the global mutex is never allocated
     due to disabled/empty caches. [Jess Holle <jessh ptc.com>]

  *) Fix a segfault in the LDAP cache when it is configured switched
     off. [Jess Holle <jessh ptc.com>]
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  *) SECURITY: CVE-2004-0811 (cve.mitre.org)
     Fix merging of the Satisfy directive, which was applied to
     the surrounding context and could allow access despite configured
     authentication.  PR 31315.  [Rici Lake <rici ricilake.net>]

  *) Fix the handling of URIs containing %2F when AllowEncodedSlashes
     is enabled.  Previously, such urls would still be rejected.
     [Jeff Trawick, Bill Stoddard]

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  *) mod_mem_cache: Fixed race condition causing segfault because of memory being
     freed twice, or reused after being freed.
     [J. Clar, W. Stoddard, G. Ames]
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  *) Add -l option to rotatelogs to let it use local time rather than
     UTC.  PR 24417.  [Ken Coar, Uli Zappe <uli ritual.org>]

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  *) mod_log_config: Fix a bug which prevented request completion time
     from being logged for I_INSIST_ON_EXTRA_CYCLES_FOR_CLF_COMPLIANCE
     processing.  PR 29696.  [Alois Treindl <alois astro.ch>]

Changes with Apache 2.0.51

  *) SECURITY: CVE-2004-0786 (cve.mitre.org)
     Fix an input validation issue in apr-util which could be
     triggered by malformed IPv6 literal addresses.  [Joe Orton]

  *) SECURITY: CVE-2004-0747 (cve.mitre.org)
     Fix buffer overflow in expansion of environment variables in
     configuration file parsing.  [André Malo]
  *) SECURITY: CVE-2004-0809 (cve.mitre.org)
     mod_dav_fs: Fix a segfault in the handling of an indirect lock
     refresh.  PR 31183.  [Joe Orton]

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  *) mod_include no longer checks for recursion, because that's done
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     in the core. This allows for careful usage of recursive SSI.
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  *) Fix memory leak in the cache handling of mod_rewrite. PR 27862.
     [chunyan sheng <shengperson yahoo.com>, André Malo]
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  *) Include directives no longer refuse to process symlinks on
     directories. Instead there's now a maximum nesting level
     of included directories (128 as distributed). This is configurable
     at compile time using the -DAP_MAX_INCLUDE_DIR_DEPTH switch.
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  *) Win32: apache -k start|restart|install|config can leave stranded
     piped logger processes (eg, rotatelogs.exe) due to improper
     server shutdown on these code paths.
     [Bill Stoddard]

  *) SECURITY: CVE-2004-0751 (cve.mitre.org)
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     mod_ssl: Fix a segfault in the SSL input filter which could be
     triggered if using "speculative" mode, for instance by a 
     proxy request to an SSL server.  PR 30134.  [Joe Orton]

  *) mod_rewrite: Add %{SSL:...} and %{HTTPS} variable lookups.
     PR 30464.  [Joe Orton, Madhusudan Mathihalli]

  *) mod_ssl: Add new 'ssl_is_https' optional function.  [Joe Orton]

  *) Prevent CGI script output which includes a Content-Range header
     from being passed through the byterange filter.  [Joe Orton]

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  *) Satisfy directives now can be influenced by a surrounding <Limit>
     container.  PR 14726.  [André Malo]
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  *) mod_rewrite now officially supports RewriteRules in <Proxy> sections.
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  *) mod_disk_cache: Implement binary format for on-disk header files.
     [Brian Akins <bakins web.turner.com>, Justin Erenkrantz]

  *) mod_disk_cache: Optimize network performance of disk cache subsystem by
     allowing zero-copy (sendfile) writes and other miscellaneous fixes.
     [Justin Erenkrantz]

  *) mod_cache, mod_disk_cache, mod_mem_cache: Refactor cache modules, and
     switch to the provider API instead of hooks.  [Justin Erenkrantz]

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  *) mod_autoindex: Don't truncate the directory listing if a stat()
     call fails (for instance on a >2Gb file).  PR 17357.
     [Joe Orton]

  *) Makefile fix: httpd is linked against LIBS given to the
     'make' invocation.  PR 7882.  [Joe Orton]

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  *) WinNT MPM: Fix a broken log message at termination.  PR 28063.
     [Eider Oliveira <eider bol.com.br>]

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  *) Prevent Win32 pool corruption at startup [Allan Edwards]

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  *) mod_ssl: Add "SSLUserName" directive to set r->user based on a
     chosen SSL environment variable.  PR 20957. 
     [Martin v. Loewis <martin v.loewis.de>]

  *) suexec: Pass the SERVER_SIGNATURE envvar through to CGIs.
     [Zvi Har'El <rl math.technion.ac.il>]

  *) apachectl: Fix a problem finding envvars if sbindir != bindir.
     PR 30723.  [Friedrich Haubensak <hsk imb-jena.de>]

  *) mod_ssl: Build on RHEL 3.  PR 18989.  [Justin Erenkrantz]

  *) SECURITY: CVE-2004-0748 (cve.mitre.org)
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     mod_ssl: Fix a potential infinite loop.  PR 29964.  [Joe Orton]

  *) mod_ssl: Avoid startup failure after unclean shutdown if using shmcb.
     PR 18989.  [Joe Orton]

  *) mod_userdir: Ensure that the userdir identity is used for
     suexec userdir access in a virtual host which has suexec configured.  
     PR 18156.  [Joshua Slive]

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  *) mod_rewrite no longer confuses the RewriteMap caches if
     different maps defined in different virtual hosts use the
     same map name. PR 26462.  [André Malo]
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  *) mod_setenvif: Remove "support" for Remote_User variable which
     never worked at all. PR 25725.  [André Malo]
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  *) Backport from 2.1 / Regression from 1.3: mod_headers now knows
     again the functionality of the ErrorHeader directive. But instead
     using this misnomer additional flags to the Header directive were
     introduced ("always" and "onsuccess", defaulting to the latter).
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  *) Use the higher performing 'httpready' Accept Filter on all platforms 
     except FreeBSD < 4.1.1. [Paul Querna]

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  *) mod_usertrack: Escape the cookie name before pasting into the
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  *) Extend the SetEnvIf directive to capture subexpressions of the
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  *) Recursive Include directives no longer crash. The server stops
     including configuration files after a certain nesting level (128
     as distributed). This is configurable at compile time using the
     -DAP_MAX_INCLUDE_DEPTH switch. PR 28370.  [André Malo]
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  *) mod_dir: the trailing-slash behaviour is now configurable using the
     DirectorySlash directive.  [André Malo]
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  *) Allow proxying of resources that are invoked via DirectoryIndex.
     PR 14648, 15112, 29961.  [André Malo]
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  *) util_ldap: Switched the lock types on the shared memory cache 
     from thread reader/writer locks to global mutexes in order to 
     provide cross process cache protection. [Brad Nicholes]
     
  *) util_ldap: Reworked the cache locking scheme to eliminate duplicate 
     cache entries in the credentials cache due to race conditions.
     [Brad Nicholes]
     
  *) util_ldap: Enhanced the util_ldap cache-info display to show more 
     detail about the contents and current state of the cache. 
     [Brad Nicholes]
     
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  *) Enable the option to support anonymous shared memory in mod_ldap.
     This makes the cache work on Linux again. [Graham Leggett]

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  *) Enable special ErrorDocument value 'default' which restores the
     canned server response for the scope of the directive.
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  *) work around MSIE Digest auth bug - if AuthDigestEnableQueryStringHack
     is set in r->subprocess_env allow mismatched query strings to pass.
     PR 27758.  [Paul Querna, Geoffrey Young]

  *) Accept URLs for the ServerAdmin directive. If the supplied
     argument is not recognized as an URL, assume it's a mail address.
     PR 28174.  [André Malo, Paul Querna]
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  *) initialize server arrays prior to calling ap_setup_prelinked_modules
     so that static modules can push Defines values when registering
     hooks just like DSO modules can ["Philippe M. Chiasson" <gozer cpan.org>]

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  *) Small fix to allow reverse proxying to an ftp server. Previously
     an attempt to do this would try and connect to 0.0.0.0, regardless
     of the server specified. PR 24922
     [Pascal Terjan <pterjan@linuxfr.org>]

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  *) Add the NOTICE file to the rpm spec file in compliance with the
     Apache v2.0 license. [Graham Leggett]
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  *) RPM spec file changes: changed default dependancy to link to db4
     instead of db3. Fixed complaints about unpackaged files.
     [Graham Leggett]
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Changes with Apache 2.0.50
  *) SECURITY: CVE-2004-0493 (cve.mitre.org)
     Close a denial of service vulnerability identified by Georgi
     Guninski which could lead to memory exhaustion with certain
     input data.  [Jeff Trawick]

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  *) mod_cgi: Handle output on stderr during script execution on Unix
     platforms; preventing deadlock when stderr output fills pipe buffer.
     Also fixes case where stderr from nph- scripts could be lost.
     PR 22030, 18348.  [Joe Orton, Jeff Trawick]

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  *) mod_alias now emits a warning if it detects overlapping *Alias*
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  *) mod_rewrite no longer turns forward proxy requests into reverse proxy
     requests. PR 28125  [ast domdv.de, André Malo]
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  *) ap_set_sub_req_protocol and ap_finalize_sub_req_protocol are now
     exported on Win32 and Netware as well (minor MMN bump).  PR 28523.
     [Edward Rudd <eddie omegaware.com>, André Malo]
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  *) Restore the ability to disable the use of AcceptEx on Win9x systems
     automatically (broken in 2.0.49). PR 28529.  [André Malo]
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  *) <VirtualHost myhost> now applies to all IP addresses for myhost
     instead of just the first one reported by the resolver.  This
     corrects a regression since 1.3.  [Jeff Trawick]

  *) util_ldap: allow relative paths for LDAPTrustedCA to be resolved
     against ServerRoot PR#26602 [Brad Nicholes]
       
  *) SECURITY: CVE-2004-0488 (cve.mitre.org)
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     mod_ssl: Fix a buffer overflow in the FakeBasicAuth code for a
     (trusted) client certificate subject DN which exceeds 6K in length.
     [Joe Orton]

  *) mod_dav_fs: Fix MKCOL response for missing parent collections, which 
     caused issues for the Eclipse WebDAV extension.
     PR 29034.  [Joe Orton]

  *) mod_deflate: Fix memory consumption (which was proportional to the
     response size).  PR 29318.  [Joe Orton]

  *) mod_ssl: Log the errors returned on failure to load or initialize
     a crypto accelerator engine.  [Joe Orton]

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  *) Allow RequestHeader directives to be conditional. PR 27951.
     [Vincent Deffontaines <vincent gryzor.com>, André Malo]
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  *) Allow LimitRequestBody to be reset to unlimited. PR 29106
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  *) Fix a bunch of cases where the return code of the regex compiler
     was not checked properly. This affects: mod_setenvif, mod_usertrack,
     mod_proxy, mod_proxy_ftp and core. PR 28218.  [André Malo]
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  *) mod_ssl: Fix a potential segfault in the 'shmcb' session cache for
     small cache sizes.  PR 27751.  [Geoff Thorpe <geoff geoffthorpe.net>]

  *) Remove 2Gb log file size restriction on some 32-bit platforms.
     PR 13511.  [Joe Orton]

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  *) mod_logio no longer removes the EOS bucket. PR 27928.
     [Bojan Smojver <bojan rexursive.com>]

  *) htpasswd no longer refuses to process files that contain empty
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  *) Regression from 1.3: At startup, suexec now will be checked for
     availability, the setuid bit and user root. The works only if
     httpd is compiled with the shipped APR version (0.9.5).
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  *) Unix MPMs: Stop dropping connections when the file descriptor
     is at least FD_SETSIZE.  [Jeff Trawick]

  *) Fix handling of IPv6 numeric strings in mod_proxy.  [Jeff Trawick]

  *) mod_isapi: send_response_header() failed to copy status string's 
     last character.  PR 20619.  [Jesse Pelton <jsp pkc.com>]

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  *) Fix a segfault when requests for shared memory fails and returns
     NULL. Fix a segfault caused by a lack of bounds checking on the
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     cache.  PR 24801.  [Graham Leggett]
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  *) Throw an error message if an attempt is made to use the LDAPTrustedCA
     or LDAPTrustedCAType directives in a VirtualHost. PR 26390
     [Brad Nicholes]

  *) Fix a potential segfault if the bind password in the LDAP cache
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     is NULL.  PR 28250.  [Jari Ahonen <jah progress.com>]

  *) Quotes cannot be used around require group and require dn
     directives, update the documentation to reflect this. Also add
     quotes around the dn and group within debug messages, to make it
     more obvious why authentication is failing if quotes are used in
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     error.  PR 19304.  [Graham Leggett]

  *) The Microsoft LDAP SDK escapes filters for us, stop util_ldap
     from escaping filters twice when the backslash character is used.
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     PR 24437.  [Jess Holle <jessh ptc.com>]

  *) Overhaul handling of LDAP error conditions, so that the util_ldap_*
     functions leave the connections in a sane state after errors have
     occurred. PR 27748, 17274, 17599, 18661, 21787, 24595, 24683, 27134,
     27271 [Graham Leggett]
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  *) mod_ldap calls ldap_simple_bind_s() to validate the user
     credentials.  If the bind fails, the connection is left
     in an unbound state.  Make sure that the ldap connection
     record is updated to show that the connection is no longer
     bound. [Brad Nicholes]
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  *) Ensure that lines in the request which are too long are 
     properly terminated before logging.
     [Tsurutani Naoki <turutani scphys.kyoto-u.ac.jp>]

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  *) Update the bind credentials for the cached LDAP connection to 
     reflect the last bind.  This prevents util_ldap from creating 
     unnecessary connections rather than reusing cached connections.
     [Brad Nicholes]
     
  *) mod_isapi: GetServerVariable returned improperly terminated header 
     fields given "ALL_HTTP" or "ALL_RAW".  PR 20656.
     [Jesse Pelton <jsp pkc.com>]

  *) mod_isapi: GetServerVariable("ALL_RAW") returned the wrong buffer
     size.  PR 20617.  [Jesse Pelton <jsp pkc.com>]

  *) mod_dav: Fix a problem that could cause crashes when manipulating 
     locks on some platforms.  [Jeff Trawick]

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  *) mod_headers no longer crashes if an empty header value should