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  1. Oct 16, 2008
    • Chris Darroch's avatar
      Prior to authn/z refactoring in r368027, if authorization Require · 65d1ef00
      Chris Darroch authored 
      directives had no matching AuthType and associated authentication
directives, requests would generally fall through in the
check_user_id hook to mod_authn_default.c's authentication_no_user()
handler, which returned DECLINED if ap_auth_type() was not set.
The ap_process_request_internal() function in request.c would handle
this case by logging an "AuthType not set!" error and returning
HTTP_INTERNAL_SERVER_ERROR.

The refactoring removes this error handling in request.c, so
individual modules will need to test for a lack of authentication,
as necessary.  Since some modules such as mod_authz_host.c support
Require directives that do not need any authentication, the
mod_authn_default.c handler no longer returns DECLINED if ap_auth_type()
is not set.  (Also, mod_authn_default can be compiled out with
--disable-authn-default, so it can't be relied upon to exist.)

Since r->user may now be NULL, individual handlers must test for that
case when necessary.  Otherwise, most Require directives in the
absence of AuthType directives cause handlers to crash while performing
strcmp() and friends on a NULL r->user value.

NOTE: I can't test mod_authnz_ldap.c myself, so I'm not sure if it
needs similar fixes.  On the one hand, a NULL r->user in the authz
handlers always generates a log message.  However, it appears that
authn_ldap_build_filter() will sometimes then be called, perform no
action, which may result in a possibly uninitialized filtbuf buffer
being passed to util_ldap_cache_getuserdn().  I don't know if that
could cause problems in the LDAP cache code.  If someone familiar with
LDAP authz could take a look, that would be much appreciated.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@705361 13f79535-47bb-0310-9956-ffa450edef68
      65d1ef00
    • Mads Toftum's avatar
      Make text match example. · dcfe1982
      Mads Toftum authored 
      

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@705198 13f79535-47bb-0310-9956-ffa450edef68
      dcfe1982
    • Tony Stevenson's avatar
      Add example and comments when using ScriptAlias with a file. · df36364c
      Tony Stevenson authored 
      git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@705117 13f79535-47bb-0310-9956-ffa450edef68
      df36364c
    • Tony Stevenson's avatar
      Update howto/cgi.xml to link to RFC 3875 not a document on Ken's site · 76c67153
      Tony Stevenson authored 
      git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@705116 13f79535-47bb-0310-9956-ffa450edef68
      76c67153
  3. Oct 15, 2008
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  31. Sep 20, 2008
    • Paul Querna's avatar
      Add dummy ap_mpm_register_timed_callback for other MPMs besides Event. · 3ea1f8f2
      Paul Querna authored 
      
git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@697425 13f79535-47bb-0310-9956-ffa450edef68
      3ea1f8f2
    • Jim Jagielski's avatar
      For timeouts, behave as before and not drop. · 4baa3df3
      Jim Jagielski authored 
      From Adam Woodworth <mirkperl gmail.com>


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@697362 13f79535-47bb-0310-9956-ffa450edef68
      4baa3df3
    • Paul Querna's avatar
      Introduce Suspendable Requests to the Event MPM. · 968f3150
      Paul Querna authored 
      Using this basic framework, you can return SUSPENDED from an HTTP Handler,
and then register a callback that is invoked by the MPM at a later time.

This initial version only supports _timers_ as callbacks, but in the future I
would like to add things like wait for socket activity, on a socket specified by
the handler.

Once in a callback, It is then the responsibility of the callback fucntion 
to finish the HTTP Request handling, but this alows you to do cool things like 
a fully async proxy, COMET support, or even rate limiting.

To prove I'm not insane, I've inlcuded an example module, mod_dialup.

You can configure it like this:
<Location "/docs">
  ModemStandard "V.32"
</Location>

And for static files inside that path, you will be rate limited to V.32 speeds, 
aka 9.6 kilobits/second.

Does anyone besides Rüdiger read commit emails :-) ?

I know there are likely huge problems with this, but I would like to see how far
we can push the Event MPM, figure out what to do better, if there is anything, 
and then really dive into the 3.0 development before ApacheCon.

* server/mpm/experimental/event/fdqueue.h:
    (timer_event_t): New structure to hold timer events and callback functions.
    
* server/mpm/experimental/event/fdqueue.c
    (ap_queue_empty): Modify to also look at Timer Ring.

    (ap_queue_init): Initialize Timer Ring.

    (ap_queue_push_timer): New function, pushes a timer event into the queue.

    (ap_queue_pop_something): Renamed function, returns a timer event or
        a socket/pool for a worker thread to run.


* server/mpm/experimental/event/event.c
    (process_socket): If the connection is in SUSPENDED state, don't force it
        into linger mode yet, the callback will have to take care of that.

    (push_timer2worker): New shortcut function, pushes timer event into queue
        for a worker to run.

    (timer_free_ring): New global data structure to recycle memory used by 
        timer events.

    (timer_ring): New global data structure to hold active timer events.

    (g_timer_ring_mtx): Thread mutex to protect timer event data structures.

    (ap_mpm_register_timed_callback): New Function, registers a callback to be
        invoked by the MPM at a later time.

    (listener_thread): Calculate our wakeup time based on the upcoming Event 
        Queue, and after pollset_poll runs, push any Timers that have passed
        onto worker threads to run.
    
    (worker_thread): Call new queue pop method, and if the Timer Event is 
        non-null, invoke the callback.  Once the callback is done, push the
        structure onto the timer_free_ring, to be recycled.

    (child_main): Initialize new mutex and ring structures.


* server/config.c
    (ap_invoke_handler): Allow SUSPENDED aa valid return code from handlers.


* modules/http/http_core.c
    (ap_process_http_async_connection): Don't close the connection when in 
        SUSPENDED state.


* modules/http/http_request.c
    (ap_process_request_after_handler): New function, body pulled from the old,
        ap_process_async_request.  Split to let handlers invoke this so they 
        don't need to know all of the details of finishing a request.

    (ap_process_async_request): If the handler returns SUSPENDED, don't do
        anything but return.


* include/ap_mmn.h: Bump MMN.


* include/ap_mpm.h
    (ap_mpm_register_timed_callback): New function.


* include/httpd.h:
    (SUSPENDED): New return code for handlers.
    (request_rec::invoke_mtx): New mutex to protect callback invokcations
        from being run before the original handler finishes running.
    (conn_state_e): Add a suspended state.


* include/http_request.h
    (ap_process_request_after_handler): New function to make it easier for 
        handlers to finish the HTTP Request.


* modules/test/config.m4: Add mod_dialup to build.


* modules/test/mod_dialup.c: New rate limiting module, requires the Event MPM 
    to work.




git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@697357 13f79535-47bb-0310-9956-ffa450edef68
      968f3150
  33. Sep 19, 2008