CHANGES

Changes with Apache 2.0.26-dev

  *) Some style changes to the code that does ProxyErrorOverride. Fixed
     config merge behaviour. [Graham Leggett]

  *) Allow support programs to be compiled against a static version
     of libapr.  This allows the smaller support programs to be 
     relocated.  [Aaron Bannert <aaron@clove.org>]

  *) Update the mime.types file to the registered media types as
     of 2001-09-25, and add mapping for xsl extension [Mark Cox]

  *) Fix MaxClients in the Worker MPM, so that it specifies the maximum
     number of clients that can connect at the same time, instead of
     specifying the maximum number of child processes.
     [Aaron Bannert <aaron@clove.org>]

  *) Switch proc_pthread AcceptMutex configuration directive to pthread to 
     be consistent with 1.3.  [Justin Erenkrantz]

  *) Cache apr_explode_localtime() value for 15 seconds.
     [Brian Pane <bpane@pacbell.net>]

  *) Fix mod_include to not return ETag or Last-Modified headers.
     [Ian Holsman <ianh@cnet.com>]

  *) Fix worker MPM's scoreboard logic.  [Aaron Bannert <aaron@clove.org>]

  *) Eliminate the wasteful run-time conversion of method names from strings 
     to numbers in places where the methods are known at compile time.  
     [Brian Pane <bpane@pacbell.net>]

  *) Turn the worker MPM's queue into a LIFO.  This may
     improve cache-hit performance under some conditions.
     [Aaron Bannert <aaron@clove.org>]

  *) Switch back to SIGUSR1 for graceful restarts on all platforms that
     support it.  [Justin Erenkrantz]

  *) Cleanup the worker MPM.  We no longer re-use transaction
     pools.  This incurs less overhead than shuffling the pools
     around so that they can be re-used.  Remove one of the
     queue's condition variables.  We just redefined the API to
     state that you can't try to add more stuff than you allocated
     segments for.  [Aaron Bannert <aaron@clove.org>]

  *) Fix SSL VPATH builds [Cody Sherr <csherr@covalent.net>]

  *) Fixed persistent connections when a request contains a body.
     [Greg Stein]

  *) mod_dav uses a new API to speak to the backend provider for dead
     property management. [Greg Stein]

  *) Remove the Win32 script-processing exception from mod_cgi, and
     roll build_command_line/build_argv_list into a unified, overrideable
     ap_cgi_build_command optional function.  [William Rowe]

  *) Rewrite find_start_sequence to use a better search algorithm
     to find the start tag.  [Justin Erenkrantz]

  *) Fix a seg fault in mod_include.  When we are generating an
     internal redirect, we must set r->uri to "", not a bogus
     string, and not NULL.  [Ryan Bloom]

  *) Optimized location_walk, so subrequests, redirects and second passes
     now reuse previous section merges on a <Location > by <Location >
     basis, until we mismatch with the original location_walk. 
     [William Rowe]

  *) Back out the 1.45 change to util_script.c.  This change made
     us set the environment variable REQUEST_URI to the redirected
     URI, instead of the originally requested URI.
     [Taketo Kabe <kabe@sra-tohoku.co.jp>]

  *) Make mod_include do lazy evaluation of potentially expensive to
     compute variables.  [Brian Pane <bpane@pacbell.net>]

  *) Fix logging of bytes sent for HEAD requests.  %b and %B should
     log either - or 0, before this patch, they were both logging
     the file size.  [Taketo Kabe <kabe@sra-tohoku.co.jp>]

  *) Make mod_include check for BYTE_CHECK_THRESHOLD per bucket rather 
     than per character.  [Brian Pane <bpane@pacbell.net>]

  *) Normalize the primary request, redirects and sub-requests to
     run the same ap_process_request_internal for consistency in
     robustness, behavior and security.  [William Rowe]

  *) Fix a segfault with mod_include when r->path_info is not set
     (which is the case with mod_proxy).  [Ian Holsman <ianh@cnet.com>]

  *) Add -X functionality back.  This indicates to all MPMs and any other
     part of Apache that it should run in "debug" mode.  [Justin Erenkrantz]

  *) Some initial support for the cygwin platform [prefork only].
     This is not to be confused with support for the WinNT/Win32
     platform, which is the recommended configuration for native
     Win32 users.  The cygwin platform support is recommended for
     cygwin platform users. [Stipe Tolj <tolj@wapme-systems.de>]

  *) Changed syntax of Set{Input|Output}Filter.  The list of filters
     must be semicolon delimited (if more than one filter is given.)
     The Set{Input|Output}Filter directive now overrides a parent
     container's directive (e.g. SetInputFilter in <Directory /web/foo>
     will override any SetInputFilter directive in <Directory /web>.)
     This new syntax is more consistent with Add{Input|Output}Filter
     directives defined in mod_mime.  Also cures a bug in prior releases
     where the Set{Input|Output}Filter directive would corrupt the 
     global configuration if the multiple directives were nested.
     [William Rowe]

  *) Cured what's ailed mime for quite some time.  If an AddSomething
     was given in the configuration (Language, Charset, Handler or
     Encoding) Apache would set the content type as given by AddType, 
     but refused to check the mime.types file if AddType wasn't given 
     for that specific extension.  Setting the AddHandler for .html 
     without setting the AddType text/html html would cause Apache to 
     use the default content type.  [William Rowe]

  *) Added some bulletproofing to memory allocation in the LDAP cache
     code. [Graham Leggett]

Changes with Apache 2.0.25

  *) Move the installed /manual directory out of the /htdocs/ tree, so
     that it can be kept more independently from the remaining document
     root. The "Alias /manual ..." already allowed for easy projection
     into existing private document trees. [Martin Kraemer]

  *) Add specified user attributes to the environment when using
     mod_auth_ldap. This allows you to use mod_include to embed specified
     user attributes in a page like so:
     Hello <!--#echo var="AUTHENTICATE_CN"-->, how are you?
     [Graham Leggett]

  *) Fix a performance problem with the worker MPM.  We now create
     transaction pools once, and re-use them for each connection.
     [Aaron Bannert <aaron@clove.org>]

  *) Modfied mod_mime to prevent mod_negotation from serving a multiview
     of a 'handler' or 'filter', so that any filename extension that does 
     not contribute to the negotiated metadata can't be served without
     an explicit request.  E.g., if the .Z extension is associated with
     an unzip filter, the user request somefile.Z.html, mod_negotiation
     won't serve it.  It can serve somefile.Z.html when somefile.Z is
     requested, since the .Z extension is explictly requested, if the
     .html extension is associated with ContentType text/html.
     [William Rowe]

  *) Introduce the AddInputFilter filter[;filter...] ext [ext...]
     and corresponding AddOutputFilter syntax, to insert one or more 
     filters by mod_mime filename extension processing.
     [William Rowe]

  *) Fix a growing connection pool in core_output_filter() for 
     keepalive requests.  [Jeff Trawick]

  *) Moved split_and_pass_pretag_buckets back to being a
     macro at Ryans's request. Removed the return from it
     by setting and returning a return code instead. Updated
     the code to check the return code from the macro and
     do the right thing. [Paul J. Reder]

  *) Fix a segfault when a numeric value was received for Host:.
     [Jeff Trawick]

  *) Add a function ap_remove_input_filter.  This is to match
     up with ap_remove_output_filter.  [Ryan Bloom]

  *) Clean up location_walk, so that this step performs a minimum
     amount of redundant effort (it must be run twice, but it will no
     longer reparse all <Location > blocks when the request uri
     hadn't changed.)  [William Rowe]

  *) Eliminate proxy: (and all other 'special') processing from the
     ap_directory_walk() phase.  Modules that want to use special
     walk logic should refer to the mod_proxy map_to_location example,
     with it's proxy_walk and proxysection implementation.  This makes
     either directory_walk flavor much more legible, since that phase
     only runs against real <Directory > blocks.
     [William Rowe]

  *) Fix a security problem in mod_include which would allow
     an SSI document to be passed to the client unparsed.
     [Cliff Woolley, Brian Pane]

  *) Introduce the map_to_storage hook, which allows modules to bypass
     the directory_walk and file_walk for non-file requests.  TRACE
     shortcut moved to http_protocol.c as APR_HOOK_MIDDLE, and the
     directory_walk/file_walk happen as APR_HOOK_VERY_LAST in core.c.
     [William Rowe]

  *) Add the ability for mod_include to add the INCLUDES filter
     if the file is configured for the server-parsed handler.
     This makes the configuration for .shtml files much easier
     to understand, and allows mod_include to honor Apache 1.3
     config files.   Based on Doug MacEachern's patch to PHP
     to do the same thing.  [Ryan Bloom]