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From Rodent of Unusual Size <>
Subject [STATUS] (httpd-2.0) Wed May 4 23:45:36 2005
Date Thu, 05 May 2005 03:45:36 GMT
APACHE 2.0 STATUS:                                              -*-text-*-
Last modified at [$Date: 2005-05-04 16:51:25 -0400 (Wed, 04 May 2005) $]

The current version of this file can be found at:

Release history:

    2.0.55  : in development
    2.0.54  : released April 17, 2005 as GA.
    2.0.53  : released February 7, 2005 as GA.
    2.0.52  : released September 28, 2004 as GA.
    2.0.51  : released September 15, 2004 as GA.
    2.0.50  : released June 30, 2004 as GA.
    2.0.49  : released March 19, 2004 as GA.
    2.0.48  : released October 29, 2003 as GA.
    2.0.47  : released July 09, 2003 as GA.
    2.0.46  : released May 28, 2003 as GA.
    2.0.45  : released April 1, 2003 as GA.
    2.0.44  : released January 20, 2003 as GA.
    2.0.43  : released October 3, 2002 as GA.
    2.0.42  : released September 24, 2002 as GA.
    2.0.41  : rolled September 16, 2002.  not released.
    2.0.40  : released August 9, 2002 as GA.
    2.0.39  : released June 17, 2002 as GA.
    2.0.38  : rolled June 16, 2002.  not released.
    2.0.37  : rolled June 11, 2002.  not released.
    2.0.36  : released May 6, 2002 as GA.
    2.0.35  : released April 5, 2002 as GA.
    2.0.34  : tagged March 26, 2002.
    2.0.33  : tagged March 6, 2002.  not released.
    2.0.32  : released Feburary 16, 2002 as beta.
    2.0.31  : rolled Feburary 1, 2002.  not released.
    2.0.30  : tagged January 8, 2002.  not rolled.
    2.0.29  : tagged November 27, 2001.  not rolled.
    2.0.28  : released November 13, 2001 as beta.
    2.0.27  : rolled November 6, 2001
    2.0.26  : tagged October 16, 2001.  not rolled.
    2.0.25  : rolled August 29, 2001
    2.0.24  : rolled August 18, 2001
    2.0.23  : rolled August 9, 2001
    2.0.22  : rolled July 29, 2001
    2.0.21  : rolled July 20, 2001
    2.0.20  : rolled July 8, 2001
    2.0.19  : rolled June 27, 2001
    2.0.18  : rolled May 18, 2001
    2.0.17  : rolled April 17, 2001
    2.0.16  : rolled April 4, 2001
    2.0.15  : rolled March 21, 2001
    2.0.14  : rolled March 7, 2001
    2.0a9   : released December 12, 2000
    2.0a8   : released November 20, 2000
    2.0a7   : released October 8, 2000
    2.0a6   : released August 18, 2000
    2.0a5   : released August 4, 2000
    2.0a4   : released June 7, 2000
    2.0a3   : released April 28, 2000
    2.0a2   : released March 31, 2000
    2.0a1   : released March 10, 2000

Please consult the following STATUS files for information on related projects:


Contributors looking for a mission:

    * Just do an egrep on "TODO" or "XXX" in the source.

    * Review the bug database at:

    * Review the "PatchAvailable" bugs in the bug database:

      After testing, you can append a comment saying "Reviewed and tested".

    * Open bugs in the bug database.


    * Forward binary compatibility is expected of Apache 2.0.x releases, such
      that no MMN major number changes will occur.  Such changes can only be
      made in the trunk.

    * All commits to branches/2.0.x must be reflected in SVN trunk,
      as well, if they apply.  Logical progression is commit to trunk,
      get feedback and votes in STATUS, and then merge into branches/2.0.x.


  [ please place SVN revisions from trunk here, so it is easy to
    identify exactly what the proposed changes are! ]
  [ please append new backports at the end of this list not the top. ]

    *) ap_proxy_canonenc() is over-eager in handling '%' for reverse
       proxies (PR: 29554).
         Index: modules/proxy/proxy_util.c
             -       if (isenc && ch == '%') {
             +       if (isenc && (isenc != PROXYREQ_REVERSE) && ch == '%')

       +1: jim

    *) several changes to improve logging of connection-oriented errors, including
       ap_log_cerror() API (needs minor bump in addition to changes below)
       +1: trawick, stoddard
       -0: wrowe; seems this (valid) improvement would encourage non-compatible mods.

    *) mod_headers: Support {...}s tag for SSL variable lookup.
       +1: jorton, trawick
       nd: two comments:
         (1) is the use of APR_ASCII_* ebcdic-safe? I.e. shouldn't we use the
             native chars here and it will be converted later? (I'm not sure)
       jorton: I have no idea, let an EBCDIC-er complain if it breaks?
       trawick: seems that '\r' and '\n' are the better chars to check
                for; this is not raw data read from the network (or directly
                from SSL) but instead it is either protocol data that has 
                already been converted to the native charset or it is other
                data which was created inside the server in the native charset
         (2) I'd put out (null) only if val is NULL, not if it's empty.
       jorton: ssl_var_lookup() returns "" in place of NULL, that was really
          a deliberate choice... but maybe you're right.

    *) mod_cgi: Added API call and overload of detached field in
       cgi_exec_info_t structure to support loading in current or new address
       space for CGIs.  The patch change how NetWare use cmdtype for
       processes. It was made necessary by changes done to log.c r1.145.
       The HTTP and the APR patches are available at:
       +1: jjclar, bnicholes, trawick
       jerenkrantz: I'm confused as to the status of this backport.
       trawick: Somebody commits the APR 0.9 patch, then:
         do we have to wait for later APR 0.x release before putting
         calls to apr_procattr_addrspace_set() into httpd-2.0.x, or
         do we go ahead and introduce the prerequisite?
       clar replies: I am ready to commit the apr 0.9.x patch, but then will need 
         the changes in the httpd-2.0.x to be done in order for NetWare to work
         as expected when calling apr_proc_create. Should I do both, APR and Http,
         at the same time?

    *) mod_actions: Regression from 1.3: the file referred to must exist.
       Solve this by introducing the "virtual" modifier to the Action
       directive. PR 28553.
         modules/mappers/mod_actions.c: r1.32, r1.34
       jerenkrantz: Icky side-effect of the *t == '0' check.
       +1: nd, jerenkrantz, wrowe, jim
       -0: by rbb (inconsistent to 1.3, discussion on dev@)
          nd: I'm going to reverse the default
          jerenkrantz, striker: I'm confused as to the status of this backport.

    *) mod_log_config: Cleanup log_header_out function to allow multiple headers
       like Set-Cookie to be logged properly. PR 27787 (2.0 + 1.3)
         modules/loggers/mod_log_config.c: r1.116
       jerenkrantz asks: Isn't this what apr_table_merge is for?
       nd replies: yep. But cookies won't be merged, because browsers don't
                   support it.
       jerenkrantz: Couldn't we copy the table and merge the values somehow?
                    This just seems like a lot of code to duplicate what we
                    have already.  *shrug*  Regardless, patch looks okay...
       +1: nd, jerenkrantz

    * Rewrite how proxy sends its request to allow input bodies to 
      morph the request bodies.  Previously, if an input filter
      changed the request body, the original C-L would be sent which
      would be incorrect.

      Due to HTTP compliance, we must either send the body T-E: chunked
      or include a C-L for the request body.  Connection: Close is not
      an option. 

      A newer version of this fix that acts even better (spools to disk) has
      been committed to trunk.  The equivalent patch for 2.0.x is at:

      +1: trawick, jerenkrantz, +1
     Previous votes (before trawick's recent 2.1 commits):
      +1: stoddard, striker, jim
      -1: brianp (we need a more robust solution than what's in 2.1 right now),

    * support/check_forensic: Fix tempfile usage
      svn rev 125495, 126224
      jerenkrantz says: r126224 fixes brokenness with r125495 on Solaris.
      +1: thommay, jerenkrantz, trawick
      trawick: "which" isn't portable; I've suggested a work-around on dev@
      jorton said: NetBSD's which isn't sufficient either.
      jerenkrantz: Since it's not in the critical path (and depends on
                   mod_log_forensic), I think it's still worth it to backport
                   it as-is.  For the one or two platforms that don't like 
                   which, they can write their own version of the script.

    * Win32: Move call to mpm_service_install to the rewrite_args hook
      from the post_config hook.
      +1: stoddard, striker, wrowe (as corrected in subsequent patches)

    * don't propagate input headers describing a body to a GET subrequest
      with no body
      +1: gregames
      -1: jerenkrantz (read_length isn't a sufficient check to see if a body
                       is present in the request; presence of T-E and C-L in
                       the headers is the correct flag.)
      +/-0: wrowe (this has a negative impact on modules who wish to 'inspect'
            the headers, e.g. an xml transformation affected by the query
            string or request POST args.  The right solution is adopt apreq,
            providing an API for filters to participate in POST bodies.)
      gregames: done in rev 160573

    * mod_version: New Module, Backport from trunk. Requires Minor MMN Bump.
      +1: pquerna 
      Votes from before the integration branch:
          +1: jerenkrantz, wrowe (trivial, would even be cool in 1.3)

    *) Provide TLS/SSL upgrade functionality in mod_ssl allowing an unsecure
       connection to be upgraded to a secure connection upon request by the
       client.  The full patch file is available at
       as well as a test client tlsupgrade.c. This functionality is mainly used by
       IPP clients today.
          modules/ssl/mod_ssl.c: r1.75, r1.97, r1.100
          modules/ssl/mod_ssl.h: r1.123
          modules/ssl/ssl_engine_config.c: r1.71, r1.90
          modules/ssl/ssl_engine_init.c: r1.107, r1.126
          modules/ssl/ssl_engine_io.c: r1.102, r1.124
          modules/ssl/ssl_engine_kernel.c: r1.83, r1.105, r1.108
          modules/ssl/ssl_util.c: r1.36
          modules/ssl/ssl_private.h: r1.2
       +1: bnicholes, wrowe                             
       -0: jerenkrantz (should wait for 2.2)
       -0: pquerna (2.2)
       -0: jorton (msgid <>)

     *) mod_ssl: Fix issues picking up ssl-unclean-shutdown setting
        for e.g. a reverse proxy config, breaking interop with MSIE
        in some cases.
        rediffed for 2.0.x as:
        PR: 34452
        +1: jorton

     *) mod_userdir: fix to palloc(sizeof struct) not palloc(sizeof pointer)
        PR: 34588
        +1: jorton, trawick (isn't it worth a CHANGES entry for a storage
            corruption fix?)
     *) mod_ldap: Change the LDAP connection timeout to per-connection rather
        than global. Fixes PR: 34618
	or 2.0 view patch
	+1: bnicholes, minfrin
     *) mod_auth_ldap: Add the directive AuthLDAPAllowDNAuth to allow a 
        user to authenticate against an LDAP directory using a full user 
	DN.  This directive allows a user to authenticate against a 
	subcontext that may contain non-unique user IDs.
	or 2.0 patch
	+1: bnicholes


    *) Remove LDAP toolkit specific code from util_ldap and mod_auth_ldap.
         modules/experimental/mod_auth_ldap.c: 1.28
         modules/experimental/util_ldap.c: 1.36
       +0: minfrin (this requires the apr-util LDAP overhaul to be ported to
                    apr-util v0.9 first)
       -0: jerenkrantz
           jerenkrantz: I don't think we can change the APR 0.9 interfaces.
                        They are supposed to be set in stone.
       -1:  wrowe: agrees with jerenkrantz, further realized that this major
                   change in APR 1.0 caused -every- apr-util linked app to have
                   the ldap sdk (openldap etc) linked in, and our --static-support
                   stuff is horribly broken by this change.  Not that it's wrong,
                   we need to look at making it slightly more dynamic for those
                   apps that don't touch ldap.

    *) Add load balancer support to the scoreboard in preparation for
       load balancing support in mod_proxy.
         include/scoreboard.h: 1.52
         server/scoreboard.c: 1.75
       +0: minfrin: it makes sense for v2.1 or v2.2
       -0: nd, jerenkrantz
           nd: -0 as in "it should be considered as a 2.1 feature".
              If the modified structures are public (are they?), I'm just -1.
           jerenkrantz: Sounds like a good 2.1 feature...
       -1: wrowe (make this a private score to the module and you would be fine;
                  we don't need to keep overloading a single scoreboard.)

    *) mod_ssl: Remove some unused functions (after CAN-2004-0488 fix is applied)
       +1: jorton
       trawick: need changes to mod_ssl.h to remove prototypes for those removed functions
       0: nd: IMHO that's a public API change then and not applicable for
              2.0, just let 'em in
       -1: wrowe (as nd suggests, leave the dead horse in peace.)

    * Replace some of the mutex locking in the worker MPM with
      atomic operations for higher concurrency.
      server/mpm/worker/fdqueue.c 1.24, 1.25
      +1: brianp, ianh, jjclar
      trawick: Doesn't this make Apache slower except
               when the right atomic operations are available/
               implemented?  (Due to under-the-covers mutex
               operations when the dummy atomics are used?)
      pquerna: Has anyone tested the performance differences 
               for different platforms? At this point I would 
               favour waiting for 2.2.
      -0: stoddard (at least until the performance implications are clarified)

    * Allow mod_dav to do weak entity comparison functions.
      modules/dav/main/util.c: r1.45
      [ This one is under review.  Don't merge.  ]

    * mod_negotiation: parse quality values independent from
      the current locale and level values as integers. PR 17564.
      (essentially: get a rid of atof()) (2.0 + 1.3)
      modules/mappers/mod_negotiation.c: r1.114
      +1: nd
         We need to decide what happens with unparsable qvalues. RFC 2616
         states that q defaults to 1. (see 14.1 - 14.4). So should wrong
         qvalues be returned as 1.0 or 0.0 (as atof() did)?
         1.0: nd
         0.0: jim (a default != an "errored" value)

    * Keep the same SSLMutex for the lifetime of the parent process
      (instead of having children using different mutexes and failing
      to lock the session cache across restarts.)
      New patch forthcoming - JimJag's changes make the merge ugly.
      +1: wrowe
      +1 (concept): jim (final vote when the patch is available)

    * Fix the SSLMutex config parser so that all 'mechanisms' can take
      a filename, even if ignored, and they are rooted to the full path
      to the server (except for posixsem locks).  This allows a very
      cross-platform default:logs/ssl_mutex to be used everywhere.  Also
      eliminates the '.pid' suffix so that the name given is the name.
      Allows Win32 and other non-unicies to use named locks.
      New patch forthcoming - JimJag's changes make the merge ugly.
      +1: wrowe
      +1 (concept): jim (final vote when the patch is available)

    * mod_ssl: Drop SSL_EXPERIMENTAL_ENGINE test in favor of testing for the
      ENGINE_init() function in config.m4, and use HAVE_ENGINE_INIT instead.
      wrowe notes that this feature is a noop until configured with SSLEngine. for a clean 2.0 patch.
      modules/ssl/README 1.40
      modules/ssl/config.m4 1.14
      modules/ssl/mod_ssl.c 1.79
      modules/ssl/mod_ssl.h 1.135
      modules/ssl/ssl_engine_config.c 1.78
      modules/ssl/ssl_engine_init.c 1.113
      modules/ssl/ssl_toolkit_compat.c 1.33
      +0: wrowe {Pending research into how to get AC to use -lsockets et. al.,
                 shows breakage on Solaris which can't -lcrypto -lssl without
                 the extra pkgconfig/openssl.pc Libs: * foo }

    * mod_ssl: fix a link failure when the openssl-engine libraries are
      present but the engine headers are missing.
        modules/ssl/mod_ssl.c: r1.87
        modules/ssl/mod_ssl.h: r1.139
        modules/ssl/ssl_engine_config.c: r1.82
      PREREQ: Blow away of SSL_EXPERIMENTAL_ENGINE (see above)
      +1: jwoolley, trawick, jim, jerenkrantz

    * When UseCanonicalName is set to OFF, allow ap_get_server_port to 
      check r->connection->local_addr->port before defaulting to 
      server->port or ap_default_port()
        server/core.c r1.247
      +1: bnicholes, jim, wrowe
       0: nd, jerenkrantz
         nd: can the local_addr->port ever be 0?
	 bnicholes response: I couldn't tell you for sure if local_addr->port
	  could be 0.  But it makes sense that if it were then Apache 
	  wouldn't be listening on any port so it wouldn't matter anyway.
         nd replies: But if it can't be 0 the alternatives thereafter make no
           sense anymore, right?
	 jim proposes: UseCanonicalName Client directive
	   which implements this, keeping UseCanonicalName Off
	   "as is". 

    * ThreadStackSize for Win32 and threaded MPMs
      trawick will eventually put together a patch for httpd
      +1 concept: trawick, nd, stoddard, wrowe


    * Promote mod_ldap and mod_auth_ldap from experimental to
      non experimental status.
      +1: bnicholes, wrowe
      +0: minfrin (wait till the last cache bugs are ironed out)
      -1: jerenkrantz

    * httpd-std.conf and friends;

      a) httpd-std.conf should be tailored by install (from src or
         binbuild) even if user has existing httpd.conf
         +1:   trawick, slive, gregames, ianh, Ken, wrowe, jwoolley, jim, nd,
           wrowe - prefer httpd.default.conf to avoid ambiguity with cvs,
                   note that win32 installer creates just that file
                   (.default.conf rather than .conf.default so that win32
                    can recognize .conf files as text configuration files.)

      b) tailored httpd-std.conf should be copied by install to
         -0:   striker

      c) tailored httpd-std.conf should be installed to
         sysconfdir/examples or manualdir/exampleconf/
         +1:   slive, trawick, Ken, nd (prefer the latter), erikabele

      d) tailored httpd-std.conf should be installed as httpd-std-<version>.conf.
         +1:   striker

      e) Installing a set of default config files when upgrading a server
         doesn't make ANY sense at all.
         +1:   ianh - medium/big sites don't use 'standard config' anyway, as it
                      usually needs major customizations
         -1:   Ken, wrowe, jwoolley, jim, nd, erikabele
           wrowe - diff is wonderful when comparing old/new default configs,
                   even for customized sites that ianh mentions
           jim - it makes sense assuming that the default configs
                 include the updated directives and inline comments
                 that explain the changes and make the 'diff' more useful.

    * If the parent process dies, should the remaining child processes
      "gracefully" self-terminate. Or maybe we should make it a runtime
      option, or have a concept of 2 parent processes (one being a 
      "hot spare").
      See: Message-ID: <3C58232C.FE91F19F@Golux.Com>

      Self-destruct: Ken, Martin
      Not self-destruct: BrianP, Ian, Cliff, BillS
      Make it runtime configurable: Aaron, Justin, wrowe, rederpj, jim, nd

      /* The below was a concept on *how* to handle the problem */
      Have 2 parents: +1: jim
                      -1: Justin, wrowe, rederpj, nd
                      +0: Martin (while standing by, could it do
                                  something useful?)

    * Make the worker MPM the default MPM for threaded Unix boxes.
      +1:   Justin, Ian, Cliff, BillS, striker
      +0:   BrianP, Aaron (mutex contention is looking better with the
            latest code, let's continue tuning and testing), rederpj, jim
      -0:   Lars, wrowe (let's make this defacto for the 2.2 release.),
            nd (for 2.0)


    * There is a bug in how we sort some hooks, at least the pre-config
      hook.  The first time we call the hooks, they are in the correct 
      order, but the second time, we don't sort them correctly.  Currently,
      the modules/http/config.m4 file has been renamed to 
      modules/http/config2.m4 to work around this problem, it should moved
      back when this is fixed.

        OtherBill offers that this is a SERIOUS problem.  We do not sort
        correctly by the ordering arguments passed to the register hook
        functions.  This was proven when I reordered the open_logs hook
        to attempt to open the error logs prior to the access logs.  Possibly
        the entire sorting code needs to be refactored.

    * pipes deadlock on all platforms with limited pipe buffers (e.g. both
      Linux and Win32, as opposed to only Win32 on 1.3).  The right solution
      is either GStein's proposal for a "CGI Brigade", or OtherBill's proposal
      for "Poll Buckets" for "Polling Filter Chains".  Or perhaps both :-)

    * All handlers should always send content down even if r->header_only
      is set.  If not, it means that the HEAD requests don't generate the
      same headers as a GET which is wrong.

    * HP/UX 10.20: compile breakage in APR.  Looks like it should be easy
      to fix, probably just some extraneous #include's that are fouling
      things up.
      PR: 9457
      Jeff: See my reply and patch in the PR (and previous commit to
      stop using "pipe" as a field name).  If patch is committed, we
      should be okay.  I'll wait to see if the user tests the patch.
      Update by Jeff 20020722: I got an account on HP 10.20.  It looks
      like some of the APR thread detection is screwed up.  If we find
      pthread.h but we can't compile the pthread test program we still
      think we can use threads.  For that reason, the patch I posted
      to the PR won't work as-is since a failed compile of the test
      program means nothing.

    * exec cmd and suexec arg-passing enhancements
      Status: Patches proposed
      Message-ID: <20020526041748.A29148@prodigy.Redbrick.DCU.IE>
      (see the "proc.patch" and "suexec-shell.patch" links in this message)

    * The 2.0.36 worker MPM graceless shutdown changes work but are
      a bit clunky on some platforms; eg, on Linux, the loop to
      join each worker thread seems to hang, and the parent ends up
      killing off the child with SIGKILL.  But at least it shuts down.

    * --enable-mods-shared="foo1 foo2" is busted on Darwin.  Pier
        posted a patch (Message-ID: <>).

    * We do not properly substitute the prefix-variables in the configuration
      scripts or generated-configs.  (i.e. if sysconfdir is etc,
      httpd-std.conf points to conf.)

    * If any request gets through ap_process_request_internal() and is
      scheduled to be served by the core handler, without a flag that this 
      r->filename was tested by dir/file_walk, we need to 500 at the very 
      end of the ap_process_request_internal() processing so sub_req-esters
      know this request cannot be run.  This provides authors of older 
      modules better compatibility, while still improving the security and 
      robustness of 2.0. 

        Status: still need to decide where this goes, OtherBill comments...
        Message-ID: <065701c14526$495203b0$>
        [Deleted comments regarding the ap_run_handler phase, as irrelevant
            as BillS points out that "common case will be caught in
  	    default_handler already (with the r->finfo.filetype == 0 check)"
            and the issue is detecting this -before- we try to run the req.]

	gregames says: can this happen somehow without a broken module
            being involved?  If not, why waste cycles trying to defend against
            potential broken modules?  It seems futile.
        wrowe counters: no, it shouldn't happen unless the module is broken.
            But the right answer is to fail the request up-front in dir/file
            walk if the path was entirely invalid; and we can't do that either
            UNTIL 2.1 or we break modules that haven't hooked map_to_storage.

    * With AP_MODE_EXHAUSTIVE in the core, it is finally clear to me
      how the Perchild MPM should be re-written.  It hasn't worked
      correctly since filters were added because it wasn't possible to
      get the content that had already been written and the socket at
      the same time.  This mode lets us do that, so the MPM can be

    * htpasswd blindly processes the file you give it, and does no
      sanity checking before totally corrupting whatever file it was
      you thought you had. It should check the input file and bail
      if it finds non-comment lines that do not contain exactly 1
      ':' character.
        Message-ID: <>

    * Can a static httpd be built reliably?
        Message-ID: <>

    * [Ken] Test suite failures:
      o worker is also failing some of the 'cgi' subtests
      (see <URL:http://Source-Zone.Org/Apache/regression/>):
        Justin says: "Worker should be fine and passes httpd-test here.
                      I think it's a perl or a httpd-test problem."

    * Usage of APR_BRIGADE_NORMALIZE in core_input_filter should be
      removed if possible.
        Message-ID: <>
        Jeff wonders if we still care about this.  It is no longer an
        API issue but simply an extra trip through the brigade.

    * The Add...Filter and Set...Filter directives do not allow the
      administrator to order filters, beyond the order of filename (mime)
      extensions.  It isn't clear if Set...Filter(s) should be inserted 
      before or after the Add...Filter(s) which are ordered by sequence of
      filename extensions.  At minimum, some sort of +-[0-10] syntax seems
      like a nice solution.  See ROADMAP.

    * Get perchild to work on platforms other than Linux. This
      will require a portable mechanism to pass data and file/socket
      descriptors between vhost child groups. An API was proposed
      on dev@apr:
        Message-ID: <>

    * Try to get libtool inter-library dependency code working on AIX.
        Message-ID: <>

      Justin says: If we get it working on AIX, we can enable this
                   on all platforms and clean up our build system
      Jeff says:   I thought I tested a patch for you sometime in
                   January that you were going to commit within a few

    * Handling of %2f in URIs.  Currently both 1.3 and 2.0
      completely disallow %2f in the request URI path (see
      ap_unescape_url() in util.c).  It's permitted and passed
      through in the query string, however.  Roy says the
      original reason for disallowing it, from five years ago,
      was to protect CGI scripts that applied PATH_INFO to
      a filesystem location and which might be tricked by
      ..%2f..%2f(...).  We *should* allow path-info of the
      form ''.
      Since we've revamped a lot of our processing of path
      segments, it would be nice to allow this, or at least
      allow it conditionally with a directive.

        OtherBill adds that %2f as the SECOND character of a multibyte
        sequence causes the request to fail!  This happens notably in
        the ja-jis encoding.

      OtherBill is -0.5 for even considering this until 2.2 because
      it removes some protection we provided to third party modules
      that would mysteriously 'evaporate', exposing potential holes
      in security.  Putting this change into 2.1 development now (with
      strong warnings!) will give authors a chance to vet their code.

    * There is increasing demand from module writers for an API
      that will allow them to control the server  la apachectl.
      Reasons include sole-function servers that need to die if
      an external dependency (e.g., a database) fails, et cetera.
      Perhaps something in the (ever more abused) scoreboard?
             On the other hand, we already have a pipe that goes between parent
             and child for graceful shutdown events, along with an API that
             can be used to send a message down that pipe.  In threaded MPMs,
             it is easy enough to make that one pipe be used for graceful
             and graceless events, and it is also easy to open that pipe
             to both parent and child for writing.  Then we just need to
             figure out how to do graceless on non-threaded MPMs.

    * Win32: Rotatelogs sometimes is not terminated when Apache
      goes down hard.  FirstBill was looking at possibly tracking the 
      child's-child processes in the parent process.
        stoddard: Shared scoreboard might offer a good way for the parent 
        to keep track of 'other child' processes and whack them if the child 
        goes down.
        Other thoughts on walking the process chain using the NT kernel
        have also been proposed on APR.

    * Eliminate unnecessary creation of pipes in mod_cgid

    * Combine log_child and piped_log_spawn. Clean up http_log.c.
      Common logging API.

    * There are still a number of places in the code where we are
      losing error status (i.e. throwing away the error returned by a
      system call and replacing it with a generic error code)

    * Mass vhosting version of suEXEC.

    * All DBMs suffer from confusion in support/dbmmanage (perl script) since 
      the dbmmanage employs the first-matched dbm format.  This is not
      necessarily the library that Apache was built with.  Aught to
      rewrite dbmmanage upon installation to bin/ with the proper library 
      for predictable mod_auth_dbm administration.
        Questions; htdbm exists, time to kill dbmmanage, or does it remain
                   useful as a perl dbm management example?  If we keep it,
                   do we address the issue above?
        March discussion summary; we are missing group support.  With that
                   added to trunk, this script will go away.  It will remain
                   in 2.0 based on our versioning approach.

    * Integrate mod_dav.
        Some additional items remaining:
        - case_preserved_filename stuff
            (use the new canonical name stuff?)
        - find a new home for ap_text(_header)
        - is it possible to remove the DAV: namespace stuff from util_xml?

    * ap_core_translate() and its use by mod_mmap_static and mod_file_cache
      are a bit wonky.  The function should probably be exposed as a utility 
      function (such as ap_translate_url2fs() or ap_validate_fs_url() or 
      something).  Another approach would be a new hook phase after
      "translate" which would allow the module to munge what the
      translation has decided to do.
        Status: Greg +1 (volunteers)

    * Explore use of a post-config hook for the code in http_main.c which
      calls ap_fixup_virutal_hosts(), ap_fini_vhost_config(), and
      ap_sort_hooks()  [to reduce the logic in main()]

    * read the config tree just once, and process N times (as necessary)
        OtherBill adds that the 'good' solution of three passes against the
        config tree within one read is the better solution, but breaks many
        modules.  Best left for 2.2?
        -0.5:  OtherBill

    * (possibly) use UUIDs in mod_unique_id and/or mod_usertrack

    * (possibly) port the bug fix for PR 6942 (segv when LoadModule is put
      into a VirtualHost container) to 2.0.

    * shift stuff to mod_core.h

    * callers of ap_run_create_request() should check the return value
      for failure (Doug volunteers)

    * Win32: Get Apache working on Windows 95/98. The following work
        (at least) needs to be done:
        - Document warning that OSR2 is required (for Crypt functions, in
        rand.c, at least.)  This could be resolved with an SSL library, or
        randomization in APR itself.
        - Bring the Win9xConHook.dll from 1.3 into 2.0 (no sense till it
        actually works) and add in a splash of Win9x service code.

    * Fix the worker MPM to use POD to kill child processes instead
      of ap_os_killpg, regardless of how they should die.

    * Scoreboard structures could be changed in the future such that
      proper alignment is not maintained, leading to segfaults on 
      some systems.  Cliff posted a patch to deal with this issue but
      later recanted. See this message to
      Message-ID: <Pine.LNX.4.44.0203011354090.16457-200000@deepthought


    * In order to use a DSO version of mod_ssl we have to link with
      -lssl and -lcrypto. A workaround is in place right now where the
      entire EXTRA_LIBS macro is being appended to the objects list, but
      this is a hack. We should either revamp the APACHE_CHECK_SSL_TOOLKIT
      autoconf function or come up with some other autoconf checks to
      search for libssl and libcrypto and properly add them to mod_ssl's
      link flags.

    * SSL renegotiations in combination with POST request

    * Port or dispose all code inside #if 0...#endif blocks that remain
      from the porting effort.

    * Do we need SSL_set_read_ahead()?

    * the ssl_expr api is NOT THREAD SAFE.  race conditions exist:
       -in ssl_expr_comp() if SSLRequire is used in .htaccess
        (ssl_expr_info is global)
       -is ssl_expr_eval() if there is an error
        (ssl_expr_error is global)

    * SSLRequire directive (parsing of) leaks memory

    * Diffie-Hellman-Parameters for temporary keys are hardcoded in
      ssl_engine_dh.c, while the comment in ssl_engine_kernel.c says:
      "it is suggested that keys be changed daily or every 500
      transactions, and more often if possible."

    * ssl_var_lookup could be rewritten to be MUCH faster

    * CRL callback should be pluggable

    * session cache store should be pluggable

    * init functions should return status code rather than ssl_die()

    * ssl_engine_pphrase.c needs to be reworked so it is generic enough
      to also decrypt proxy keys

    * the shmcb code should just align its memory segment rather than
      jumping through all the "safe" memcpy and memset hoops


    * General stabilization and testing
    * Fix the shared memory cache

PRs that have been suspended forever waiting for someone to
put them into 'the next release':

    * documentation and Q&A

      PR#2221: Make online documentation search link back to my installation

      PR#2906: Propose that Apache recommend $UNIQUE_ID for all "session id"

      PR#2793: When will Apache support P3P? Any Plans?

    * build

      PR#2113: HTTP Server Rebuild Line Needs Changing for the better

      PR#2421: problem specifying ndbm library for build ?with autoconfigure

    * config

      PR#76: missing call to "setlocale();"

      PR#628: Request of "Options SymLinksIfGroupMatch"

      PR#793: RLimitCPU and RLimitMEM don't apply to all children like they should

      PR#922:  it is useful to allow specifiction that root-owned symlinks
      should always be followed

      PR#1028: DoS attacks involving memory consumption

      PR#1191: setlogin() is not called, causing problems with e.g. identd

      PR#1204: regerror() exists, use it

      PR#2284: Can not POST to ErrorDocument - Apache/1.3b6

      PR#2396: Proposal for TimeZone directive

      PR#2446: AllowOverride FileInfo is too coarse

      PR#2760: [PATCH] User/Group for <Directory> and <Location> i.e. not only
      in global and <Virtual>.

      PR#2907: suggestion: power up your Include directive :)

      PR#3018: cannot limit some HTTP methods

      PR#3677: New ErrorDocumentMatch directive

      PR#4244: "Files" and "FilesMatch" regexp does not recognize bang as
      negation operator

      PR#5993: AllowOverride should have a 'CheckNone' and 'AllowNone' argument
      instead of only 'None'

    * mod_access

      PR#537: mod_access syntax allows hosts that should be restricted

      PR#1287: add allow,deny/deny,allow warning to mod_access

      PR#2512: <IfDenied> directive wanted

    * mod_auth-any

      PR#557: ~UserHome directories are not honored in absolute pathname
      requests (.htaccess)

      PR#1117: Using NIS passwd.byname dbm files with AuthDBMUserFile

      PR#1809: Suggestion for improving authentication modules and core source
      code, problem with 401 and ErrorDocument

    * mod_autoindex

      PR#1263: Add frame-safe anchor attribute to mod_autoindex links

    * mod_cgi (and suexec)

      PR#921: suexec Uses cwd before filling it in, doesn't use syslog

      PR#1176: Apache cannot handle continuation line in headers

      PR#1120: suexec does not parse arguments to #exec cmd

      PR#1268: CGI scripts running as Apache user: security (suexec etc.)

      PR#1285: Error messages could be easier to spot in cgi.log file for suexec.c

      PR#1905: suexec - Allow modules to set user:group for execution.

      PR#2360: suexec for general access of user content?

      PR#2460: TimeOut applies to output of CGI scripts

      PR#2573: CGI's for general use still have to be run as another user
      with suExec

      PR#4241: Need to be able to override shebang line to make CGI scripts
      more portable.

      PR#4490: mod_cgi prevents handling of OPTIONS requests

    * mod_env

      PR#370: Modified PATH environemnt variable is not passed, instead
      system's is used

    * mod_headers

      PR#1383: I make mod_headers to modify request headers as well as
      response ones.

      PR#1677: mod_headers should allow mod_log_config-style formats in
      header values

    * mod_imap

      PR#759: imap should read <MAP><AREA>*</MAP> too!

    * mod_include

      PR#78: Additional status for XBitHack directive

      PR#623: A smarter "Last Modified" value for SSI documents (see PR number 600)

      PR#1145: mod_include
      Allow for Last-Modified: without resorting to XBitHack

      PR#1803: patches to mod_include to allow for file tests

      PR#4459: Suggestion for better handling of Last-modified headers

    * mod_info

      PR#2415: /server-info doesn't check for the virtual host to list the info

    * mod_log-any

      PR#1050: Logging of virtual server to error_log as well

      PR#1358: Selective url-encode of log fields (or maybe a pseudo
      log_rewrite module?)

      PR#2073: pipelined connections are not logged correctly

      PR#4448: Please allow CGI env variables (QUERY_STRING, ...) to be logged
      with %{}e

    * mod_negotiation

      PR#3191: no way to set global quality-of-source (qs) coneg values
      with multiviews

    * mod_proxy

      PR#362: Mod_proxy doesn't allow change of error pages

      PR#440: Proxy doesn't deliver documents if not connected

      PR#534: proxy converts ~name to %7Ename when name starts with a dot (.)

      PR#612: Proxy FTP Authentication Fails

      PR#700: Proxy doesn't do links right for OpenVMS files through ftp:

      PR#980: Controlling Access to Remote Proxies would be nice...

      PR#994: Adding authentication "on the fly" through the proxy module

      PR#1085: ProxyRemote make a dead cycle.

      PR#1166: ``nph-'' not honored (no buffering) for ProxyRemote mapping

      PR#1290: Need to know "hit-rate" on proxy cache

      PR#1532: Proxy transfer logging

      PR#1547: No HTTP_X_FORWARDED_FOR set...

      PR#1567: ProxyRemote proxy requests fail authentication by firewall

      PR#1702: mod_proxy to support persistent conns?

      PR#1878: listing of proxy cache content

      PR#2314: patterns in ProxyRemote

      PR#2648: Cache file names in Proxy module

      PR#3568: Accessing URL through proxy server corrupts data.

      PR#3605: Some anonymous FTP URLs ask for authentication

    * mod_rewrite

      PR#1582: mod_rewrite forms REQUEST_URI different than mod_cgi does

      PR#2074: mod_rewrite doesn't pass Proxy Throughput on internal subrequests

    * mod_status

      PR#2138: mod_status always displays 256 possible connection slots

      PR#2343: Status module averages are for entire uptime

    * apache-api

      PR#1004: request_config field in request_rec is moderately bogus

      PR#1158: improvements to child spawning API

      PR#1233: there is no way to keep per-connection per-module state

      PR#2024: adding auth_why to conn_rec

      PR#2873: Feedback/Comment on APACI

      PR#3143: No module specific data hook for per-connection data

    * generally odds and ends

      PR#2431: A small addition to rotatelogs.c to improve program functionality.

      PR#2763: mailto tags and bundling bug report script

      PR#2785: os-aix Support for System Resource Controller

      PR#2889: Inclusion of RPM spec file in CVS/distributions

      PR#5713: os-windows [PATCH] install as win32 service with domain account
        Status: Cannot accept password-as-arg, we should prompt the
                user when -k install/-k config with a user argument.

Other bugs that need fixing:

    * ap_discard_request should be converted to use the bucket API
      directly rather than waste cycles copying buffers with the old API.

    * MaxRequestsPerChild measures connections, not requests.
        Until someone has a better way, we'll probably just rename it
    * Regex containers don't work in an intutive way
        Status: No one has come up with an efficient way to fix this
        behavior. Dean has suggested getting rid of regex containers
        OtherBill suggests: We at least seem to agree on eliminating
                            the <Container ~ foo> forms, and using only
                            <ContainerMatch foo> semantics.

    * SIGSEGV on Linux (glibc 2.1.2) isn't caught properly by a
      sigwaiting thread. We need to work around this, perhaps unless
      there is hope soon for a fixed glibc.

    * orig_ct in the byterange/multipart handling may not be
      needed. Apache 1.3 just never stashed "multipart" into
      r->content_type. We should probably follow suit since the
      byterange stuff doesn't want the rest of the code to see the
      multipart content-type; the other code should still think it is
      dealing with the <orig_ct> stuff.
        Status: Greg volunteers to investigate (esp. since he was most 
                likely the one to break it :-)

Binaries (2.0.52):

 Platform                      Avail.  Volunteer
 AIX 4.3.3                     no      Bill Stoddard
 Mandrake 8.1                  no      open
 FreeBSD 4.1                   no      open
 hppa2.0w-hp-hpux11.00         no      Cliff Woolley
 i386-pc-solaris2.9            no      Aaron Bannert
 i386-unknown-freebsd4.5       no
 i386-unknown-freebsd4.6       no      Cliff Woolley
 i386-unknown-freebsd4.10      no      Aaron Bannert
 i686-pc-linux-gnu-slackware81 no      Cliff Woolley
 i686-pc-linux-gnu-rh70        no      Aaron Bannert
 i686-pc-linux-gnu-rh73        no      Cliff Woolley
 i686-pc-linux-gnu             no      Graham Leggett
 ia64-hp-hpux11.20             no
 powerpc-apple-darwin7.4.0     no      Aaron Bannert
 powerpc-unknown-linux-gnu     no      Graham Leggett
 s390-ibm-linux                no      Greg Ames
 sparc-sun-solaris2.8          no      Jim Jagielski
 NetWare                       no      Brad Nicholes
 OS/2                          no      Brian Havard
 OS/390                        no      Greg Ames
 Win32-x86                     yes     William Rowe
 x86_64-unknown-linux-gnu      no      Aaron Bannert

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