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side-by-side code changes report for "CHANGES": 2.4.6_vs_2.4.7-0910052141
3 *) *nix: On graceful restart, send SIGTERM, then wait 2sec before
4 removing any unix domain sockets. Based on a patch by Bernd Wurst.
6 *) Fix uid_t/gid_t compiler warnings. [Artur Zaprzala <arturz ownmail.net>]
8 *) A few more EINTR fixes. [Artur Zaprzala <arturz ownmail.net>]
10 *) Don't let the Content-Length header propagate on errors or across
11 redirects. [Artur Zaprzala <arturz ownmail.net>]
13 *) Fix pass-header handling (prefix with HTTP_). Based on a patch by
14 [Christian Seiler <chris_se gmx.net>]
16 *) Add an EOS bucket to the output filter chain. Based on a patch by
17 [Philipp Dunkel <p.dunkel i5invest.com>]
19 *) Handle EINTR and EAGAIN in places AIX stress testing revealed
20 issues. Based on a patch by [Rainer Jung <rainer.jung kippdata.de>]
22 *) Fix process spawning on WIN under Apache 2.2.9 (an incompatible
23 change was introduced in APR 1.3). Patch by
24 [Tom Donovan <Tom tomdonovan.net>]
26 *) Allow duplicate Status, Location and ContentType headers
27 (consistent with mod_cgi). Based on a patch by
28 [Christian Seiler <chris_se gmx.net>]
30 *) Fix a spurious idle timeout error that occurred under unique
31 application timing and response size conditions. Based on a
32 report and patch by [Joe Strout <joe strout.net>]
36 *) Fix a bug I introduced in 2.4.4 that broke dynamic application
37 restarts. Reported by [Yar <yarodin gmail.com>]
41 *) Allow FastCgiServer and FastCgiExternal server directives
42 to be used within VirtualHosts (again). Add docs to explain
43 potential accessibility from other VirtualHosts.
44 [Rob Saccoccio <robs fastcgi.com>]
46 *) Check for a null filename in the request to prevent an NPE that
47 was occurring when a WebSphere Apache module was also in use.
48 [Fabian Pehla <fabian pehla.de>}
50 *) [AP2] Call ap_set_content_type() rather than setting the content_type
51 directly so that the AddOutputFilterByType directive can work correctly.
52 [Thomas 'Freaky' Hurst <tom.hurst clara.net>]
54 *) Don't use initializers for timeval structs because on 64bit
55 MVS there is a padding field in between tv_sec and tv_usec.
56 [Eric Covener <covener gmail.com>]
58 *) [AP2] Add support for nph (non parsed header) scripts.
59 [Peter Zijlstra <peterz nedstat.com>]
61 *) Abort the request if the client connection ends prematurely.
62 [Peter Zijlstra <peterz nedstat.com>]
64 *) Introduce the apr_* backward compatibility macros removed
65 in Apache 2.2. ["Daniel Smertnig" <daniel.smertnig gmail.com>]
67 *) Fix a problem (remove install-modules) in Makefile.AP2 under
68 Apache 2.2. ["Daniel Smertnig" <daniel.smertnig gmail.com>]
70 *) Don't count an application exit towards the number of
71 failures when doing restart backoff handling if the exit
72 status is 0. ["Rob Saccoccio" <robs fastcgi.com>]
74 *) [*nix] Don't use suexec when there is no user/group in effect.
75 This change is consistent with Apache2 handling. Identified
76 by ["Florian Effenberger" <floeff arcor.de>].
78 *) Add a -min-server-life option to the FastCgiConfig and
79 FastCgiServer directives to provide better control of the
80 restart backoff feature. ["Benjamin Osheroff" <ben gimbo.net>]
84 *) [WIN] Fix handle leaks in the process manager.
85 ["Sascha Schumann" <sascha schumann.cx>]
87 *) [WIN] Use a permanent pool for allocating the SystemRoot
88 environment variable. [Sakamoto <ringring zb4.so-net.ne.jp>]
90 *) [WIN] Fix starting of scripts under AP2.
92 *) Do the connect() to the application *after* collecting a chunk
93 of client data. This reinstates the pre-2.4.0 behaviour.
94 ["James Jurach" <muaddib erf.net>]
96 *) Remove an assert that was triggering on WIN when spawn() failed.
98 *) Provide the NO_SUEXEC_FOR_AP_USER_N_GROUP macro for building
99 mod_fastcgi with the AP13 suexec behaviour (don't use suexec
100 if httpd's user and group match that needed for the application).
102 *) Prevent the use of all but the "auth" directives from being used
103 anywhere but in global scope. Prevent more than one instance
104 of the FastCgiWrapper directive.
106 *) Return NOT_FOUND (404) or FORBIDDEN (403) instead of
107 INTERNAL_SERVER_ERROR (500) when there are configuration issues
108 or the script does't exist. Suggested by ["Jeff Lawson" <bovine ud.com>].
112 *) [*nix Security] - When FastCgiWrapper (FastCgiSuexec) was in use
113 and a vhost configured to use the same uid/gid as the main
114 server, mod_fastcgi would not bother using the wrapper (suexec)
115 because its effective uid/gid was already appropriate. This is
116 consistent with Apache's v1.3 mod_cgi behaviour. There are two
117 problems with this approach: 1) when FastCgWrapper is in use
118 mod_fastcgi's process manager keeps its root privileges (as its
119 real uid/gid) so it can terminate the applications its starts -
120 this privilege was being passed to applications when the use of
121 the wrapper was bypassed 2) wrappers are often employed to
122 perform functionality beyond setting the uid/gid - by not calling
123 the wrapper under certain circumstances, application invocation
124 environments were inconsistent. With this change, the wrapper is
125 always used (when enabled) under both Apache 1.3 and 2.
126 Reported by ["Michael Richards" <michael fastmail.ca>].
128 *) [*nix/AP2] Use the vhost uid/gid instead of the server uid/gid
129 for dynamic application invocation when the FastCgiWrapper is in use.
130 Reported by ["Michael Richards" <michael fastmail.ca>]
132 *) [*nix] Fix handling of FastCgiWrapper when passed a real path,
133 i.e. other than "on" or "off". ["Michael Richards" <michael fastmail.ca>]
135 *) Eliminate the logging of "incomplete headers (0 bytes) received from
136 server" when a client aborts.
138 *) [WIN32] Fix a delay in handling large POSTs to named pipe based
139 servers. ["Philip Gladstone" <philip okena.com>]
141 *) [*nix/AP2] Prevent the module from being initalized twice at startup
142 (resulting in confusing error messages to the log).
144 *) Eliminate the need for SetHandler or AddHandler with static or
145 external applications.
147 *) Limit PM requests to start a dynamic application
148 to 5sec to prevent endless spinning (this is a drop-dead
149 limit that should only occur if the socket/named_pipe directory
150 is removed out from under a running server).
152 *) [*nix] Change the default socket directory from /tmp/fcgi to:
153 Apache - logs/fastcgi
154 Apache2 - RUNTIMEDIR/fastcgi
156 *) Add -user & -group args to FastCgiServer and FastCgiExternalServer
157 for use with wrappers (in lieu of finding the user/group associated
158 with a virtual host - under Apache2 this isn't accomodated).
160 *) [WIN32] Under Apache2, require v2.0.41 or later in order to pickup my
161 apr_proc_create() changes.
163 *) Log when invoking and restoring the restart backoff policy.
165 *) [WIN32] Prevent intermittent ReadFile() failures (properly initialize the
166 OVERLAPPED structure).
168 *) Eliminate need for dummy files for external servers under Apache2
170 *) Fix auth compatibility mode handling for access checker and authorizer
172 *) Fix HEAD request handling. Based on a patch by
173 ["Chris Lightfoot" <chris ex-parrot.com>].
175 *) [*nix] When autoupdate is enabled touch the socket when restarting
176 the processes to prevent further requests.
177 ["Eckebrecht von Pappenheim" <evp heise.de>]
179 *) Apache 2.0 support.
181 *) [WIN32] Don't read from a potentially closed named pipe.
182 ["Philip Gladstone" <philip okena.com>]
184 *) Require the Apache version 1.3.6 or later to eliminate some signal
185 handling funk.
187 *) [WIN32] Use asyncronous io with named pipes instead of polled
188 nonblocking io. This should eliminate the last of the npipe issues.
190 *) Handle an application returning a complete and valid response without
191 having consumed all of the data sent to it.
193 *) Consume remaining client data (RESPONDERs only) if any.
195 *) Add support for backing off attempts to start applications that continuously
196 fail to start. Three new macros defined in mod_fastcgi.h control this
197 behaviour: MAX_FAILED_STARTS, RUNTIME_SUCCESS_INTERVAL, FAILED_STARTS_DELAY
199 *) [WIN32] Add (back) support for use of TerminateProcess() to accomodate
200 applications that do not (properly) support the shutdown event (this
201 feature was introduced in fcgi2 2.2.2 and improved in 2.2.4). The
202 new macro WIN32_SHUTDOWN_GRACEFUL_WAIT in mod_fastcgi.h conrols the
203 interval between signaling a proper shutdown and wacking the process(s)
204 with a TerminateProcess().
206 *) [WIN32] Don't set the OVERLAPPED_IO flag on NamedPipe listen HANDLEs -
207 setting it was just plain broken.
209 *) [WIN32] Fix the accept mutex - all applications were sharing one!?
211 *) Fix 'FastCgiConfig -autoUpdate'.
213 *) Fix 'FastCgiConfig -flush'.
215 *) Prevent silly maxProcesses and processSlack combinations.
216 ["Dmitry Dorofeev" <dima yasp.com>]
218 *) Properly handle the killing of idle processes when one takes a long time
219 to exit once signaled down (or the config is funky).
220 ["Dmitry Dorofeev" <dima yasp.com>]
222 *) Always kill the youngest instance of an application. Suggested by
223 ["Dmitry Dorofeev" <dima yasp.com>]
227 *) Delay the logging of write errors to the pm to account for shutdown/restart.
229 *) (Win32) An assortment of fixes.
231 *) Fix some broken casts that were likely the cause of an assert.
233 *) Win32. Eliminate forward slashes from the named pipe path name.
234 ["Gerald Richter" <richter ecos.de>]
236 *) SIGUSR2 is no longer blocked in the process manager and the fastcgi
237 applications it spawns. [<ryans amazon.com>]
239 *) Added support for the -flush argument to FastCgiConfig.
240 ["Eric Sit" <esit alum.mit.edu>]
242 *) Change the "which call to module_init() is this" check to a more
243 reliable approach. ["Doru Petrescu" <pdoru kappa.ro>]
245 *) Close the old pipe file descriptor in apache main on USR1/HUP
246 (elimnates a small leak).
247 ["James E. Jurach Jr." <jjurach fundsxpress.com>]
249 *) Fix a bug in fcgi_config_set_authoritative_slot().
250 ["Tetsuya Furukawa" <tetsuya secom-sis.co.jp>]
252 *) Eliminate the use of locks to assist in the clean shutdown of
253 applications. Instead, it is assumed that applications handle
254 termination signals properly (this is now embedded in the C
255 application lib).
257 *) Fix Win32 process termination. Proper operation requires the use of
258 an updated application lib (termination is now signalled with an
259 Event and handled by specialized thread).
261 *) Docs cleanup. ["Andrew Benham" <adsb bigfoot.com>]
263 *) Added code so if the last instance of a dynamic application died without
264 provocation, then don't restart it if singleThreshold > 0 (i.e. if the
265 configuration allows the last instance to be killed, then allow it to die).
266 ["Andrew Benham" <adsb bigfoot.com>]
268 *) Fix the loadFactor calculation used to determine when dyanmic
269 applications could be killed off due to low demand. [<adsb bigfoot.com>]
271 *) Fix a deadlock condition that could occur with Win32 named
272 pipes (dynamic).
274 *) Fix a potential deadlock condition when FastCGI application
275 sent responses while still reading the client request (POST data).
279 *) Allow absolute pathnames in the -socket argument. Suggested by
280 ["Christian Jaeger" <christian.jaeger sl.ethz.ch>].
282 *) Don't invoke suexec when the user/group for the fastcgi application
283 is the same as the apache main server. This is consistent with
284 apache's suexec handling. Suggested by ["Nikolaus Rath"
285 <Nikolaus rath.org>].
287 *) Reset the apache drop dead timer upon successful read or writes
288 to/from the client. This eliminates timeouts that were occuring
289 during the large file transfers to/from slow clients.
291 *) Support generic wrappers such as cgiwrap by eliminating dependencies
292 on Apache's SUEXEC, renaming the FastCgiSuexec directive
293 FastCgiWrapper and eliminating any checks regarding the target
294 application (this is the repsonibility of the wrapper).
296 *) Fix a nasty bug that occurred when a client aborted a POST request
297 before the connection to a dynamic FastCGI application was opened.
298 The application's lock file descriptor wasn't setup but was being
299 closed which resulted in FD0 being closed. Normally this is open to
300 /dev/null and should pose no problems except that because the FD
301 was available it was being returned by Apache's accept(). This
302 caused it to be registered for pool cleanup. mod_cgi though moves
303 the CGI stdin pipe to FD0 and thus it was getting waxed during pool
304 cleanup. Problem identified by [<checksum 163.net>].
306 Changes with mod_fastcgi 2.2.8
308 *) Eliminate the concept of disabled applications. If a failure
309 occurs trying to setup an application (e.g. bind() error) its
310 tried repeatedly every init-start-delay seconds.
312 *) Tweak to Makefile.tmpl to support DSOs.
313 ["Dave Hill" <ddhill zk3.dec.com>]
315 Changes with mod_fastcgi 2.2.6
317 *) Shutdown the PM when Apache appears to have disappeared.
319 *) seteuid() tweak for HP-UX 11.
320 ["Milton L. Hankins" <mlh swl.msd.ray.com>]
322 *) (Win32) More dynamic fixes.
324 *) (Win32) Eliminate the per application named pipe mutex. Its now
325 per process to keep the lib happy (the use _FCGI_MUTEX_ should
326 removed from the lib). This allows pipe-based applications to
327 now handle multiple simoultanous requests (one per process).
329 *) Increase the number of open FDs we look to close when spawning apps.
331 *) Prevent an assert from popping unnecessarily.
333 *) (Win32) Add support for interpretter scripts.
335 *) (Win32) Fix named pipe handling (problems with large responses).
337 *) (Win32) Remove the "can exec" check.
339 Changes with mod_fastcgi 2.2.4
341 *) Beta WinNT support. ["David Allen" <djallen raleigh.ibm.com>] and
342 [Rob Saccoccio <robs chelsea.net>]
344 *) Remove request type restriction (GET and POST only) in order to support
345 Web DAV requests. ["Scott Robertson" <sroberts codeit.com>]
347 *) Allow requests for URLs such as /server/some/other/qualifier to match a
348 FastCGI server defined as /server. This was done primarily for Java
349 Servlets, but is generically useful.
351 *) Change the comm between the PM and the request handlers from a regular
352 file to a pipe and an assortment of other dynamic fixes.
354 *) Log dynamic process termination scheduling and the resulting
355 process exit notification.
357 *) Change the default singleThreshhold from 10 to 0 to prevent the last dynamic
358 application process from being killed off due to low demand.
360 *) Clean up FastCGI application pathnames (e.g. remove duplicate slashes).
362 *) Fix bugs that prevented dynamic processes from being shutdown when
363 the load subsided. ["Lars Heete" <heete do.isst.fhg.de>]
365 *) Prevent dynamic processes from being scheduled to be started before
366 the init-start-delay or restart-delay period expires. This prevents
367 the queuing of process start requests while an application which has
368 a long initialization period starts up.
370 *) When suexec is enabled, allow the process manager to become root again in
371 order to signal applications it spawned.
373 *) Change the "server started" log message level from INFO to WARN.
375 *) Fix dynamic server "Connection Refused" handling.
377 *) Fix demand-based dynamic process spawing (uses a more portable approach).
379 *) Add -idle-timeout arg to FastCgiServer, FastCgiExternalServer, and
380 FastCgiConfig. mod_fastcgi will now abort a connection if inactive for
381 longer than this period. It applies to the initiation of connections as
382 well (and thus is similar to appConnTimeout). Default is 30 seconds.
384 *) appConnTimeout is 0 by default now resulting in blocking connect()s. This
385 is more platform portable/predicable.
387 *) Leave STDOUT and STDERR open to the main server error_log. This should
388 eliminate a pile of protocol errors and having to track down 3rd party
389 libs writing to stderr inadvertantly. This doesn't mean these shouldn't
390 be fixed in the application to use the FastCGI I/O, it just allows these
391 applications to run when previously they'd crash and burn.
393 *) Add the pass-header arg to server directives.
395 *) Allow supplementary groups to be passed to spawned FastCGI applications (as
396 is done for CGI) - at least until PR2580 is resolved.
398 *) Initialize the default (empty) environment in a more socially acceptable
401 *) Miscellaneous doc improvements based on notes I've collected up over the
402 last few months.
404 *) Fix a bug in the stderr handling introduced in 2.2.2. There were conditions
405 that resulted in not or improperly terminated strings.
407 *) Fix the call to setsockopt() to disable Nagle. Based on a bug report by
408 ["Johannes Plassmann" <johannes.plassmann pdb.siemens.de>].
410 Changes with mod_fastcgi 2.2.2
412 *) Added support for blocking connect()s by setting appConnTimeout to 0.
413 Non-blocking connect()s (the default) can be troublesome on some platforms.
414 Its expected that blocking connect()s will become the default (and
415 non-blocking connect()s will become optional) in the next release.
417 *) Dump a compile time error if the version of Apache is too old.
419 *) Wrap the SIGPIPE handler manipulation code such that it is only applicable
420 to Apache releases prior to 1.3.6.
422 *) Minor tweaks for RUSSIAN_APACHE. ["Sergey Gershtein" <sg mplik.ru>]
424 *) Dynamic updates:
426 Always restart a failed dynamic application if it is the last instance.
427 This means there once started there will always be at least one process
428 instance of a dynamic application.
430 Send PLEASE_START to the PM when a connect() results in an ECONNREFUSED.
431 ECONNREFUSED means the listen queue is full (or there isn't one). Asking
432 the PM to start (another) application instance may help empty it faster.
434 Change two sleep() calls to select() based snoozes because alarm() is in
435 effect and sleep() and alarm() don't always play nice together.
437 Fixed a couple of error messages.
439 *) Fix -listen-queue-depth arg on FastCgiConfig (dynamic). Previously it
440 was ignored and the default was always used.
442 *) Allow the -initial-env argument to be used to pass variables from the
443 Apache process environment to the FastCGI server (by specifying a
444 variable name without the "=" or a value). Suggested by
445 ["Martin Lichtin" <lichtin oanda.com>]
447 *) Cleanup some debug macros.
449 *) Improved script stderr handling. Based on suggestions by
450 ["David Birnbaum" <davidb chelsea.net>]
452 *) Added IRIX and FreeBSD to the list of supported platforms and other minor
453 updates to the INSTALL doc.
455 *) Changed the default listen-queue-depth (FCGI_DEFAULT_LISTEN_Q) from
456 5 to 100. Its still configurable with the -listen-queue-depth option.
457 This should help eliminate the FAQ - Why do I see "Connection Refused"
458 messages in the log?
460 *) Fix a bug in FastCgiExternalServer that broke support for external servers
461 on other hosts. ["Dave Neuer" <dneuer futuristics.net>]
463 Changes with mod_fastcgi 2.2.1
465 *) Updates to the INSTALL doc to describe building as a DSO.
467 *) If the FastCgiIpcDir directive was in use and "httpd -t" was issued while
468 Apache was running ("apachectl restart" does this), the contents of the
469 dynamic directory (dynamic sockets and the mbox) would be blown away
470 (a 2.1b1 bug).
472 *) Add an extern declaration for ap_sys_siglist (its exposed but not in any
473 Apache header file) to prevent a compile error on systems without
474 SYS_SIGLIST defined.
476 *) During auth requests, the subprocess_env table was left holding variables
477 sent to the auth FastCGI server (including REMOTE_PASSWD!) which means they
478 were passed to other processing phases (such as CGI/FastCGI). The
479 subprocess_env is now restored to its pre-auth condition.
481 *) Added a FastCGI Authorizer Role compatibility mode which implements the
482 specification to the tee. Use -compat arg with any of the Auth server
483 directives. This is intended for new and existing FastCGI authorizer
484 applications that require compatibility with other server implementations.
486 *) Fix logging from the process manager. Previously, all calls to the
487 logging routines used NULL for the server_rec. This works fine in a dev
488 environment, but results in most of these messages being tossed by
489 log_error_core() because DEFAULT_LOGLEVEL is too low. Odd logic.
491 *) Always setup fr->header so that in the event the FastCGI server
492 doesn't get a valid FastCGI protocol header over the wire, we
493 can still print our error message to the log from do_work().
495 *) Fix a compile error in open_connection_to_fs() on systems with TCP_NODELAY
496 defined. ["Don Locrasto" <locrasto iceminer.com>]
498 Changes with mod_fastcgi 2.2.0
500 *) Serious rewrite of mod_fastcgi.html. An example conf will have
501 to wait until another time - I'm burned out on docs updates.
503 *) Add to the mod_fastcgi to the server version string.
505 *) SCO doesn't like the const in the arg to inet_addr() and
508 *) Use Apache's NET_SIZE_T to get the correct arg type for getsockopt().
510 *) Deleted redundant header files from fcgi.h.
512 *) Full path names are no longer required for directives which take
513 file names as arguments. Like other Apache directives you can
514 specify paths from server_root (don't start with a "/").
516 *) The fcgiKillMgr is gone. This intermediate process sat between
517 the Apache parent and the FastCGI Process Manager under Apache
518 1.2. The process manager tries to name itself fcgi_pm (it used
519 to be fcgiProcMgr).
521 *) Authentication, Authorization, and Access phases are now
522 supported. I've bent the FastCgi spec a bit: as many of the standard
523 environment variables (that were easy) are sent (the spec says don't
524 send some by name), all headers (except Status) sent by the auth
525 FastCgi server are passed to subprocesses (CGI/FastCGI invocations)
526 as environment variables rather than just those prefixed by
527 "Variable-". Custom responses for auth failures aren't supported
528 (yet.. we'll see what the demand for this is like). In addition to
529 the FastCGI protocol defined environment variable "FCGI_ROLE" being
530 set to "AUTHORIZER" an environment variable "FCGI_APACHE_ROLE" is
531 set indicating which of the three phases is being processed. See
532 the docs for info on the new per-directory directives:
534 FastCgiAuthenticator, FastCgiAuthenticatorAuthoritative,
535 FastCgiAuthorizer, FastCgiAuthorizerAuthoritative,
536 FastCgiAccessChecker, FastCgiAccessCheckerAuthoritative
538 *) The code has been broken into logical chunks making figuring it
539 out much easier. All of the #defines a user may want to change are
540 now in mod_fastcgi.h.
542 *) All the logging has been converted to the "supported" Apache
543 logging routines, ap_log_error() and ap_log_rerror(). Log entries
544 for request specific errors should now be directed to the correct
545 server errorlog (if your running more than one). Some attempt has
546 been made at setting appropriate log levels (comments of course are
547 welcome) and printing errno info when its of value. All of log
548 messages now have "FastCGI" in them (nice for grep).
550 *) All of the calls to Apache routines have been updated to the ap_
551 convention, eliminating the need for the compat header.
553 *) By default we no longer flush every piece of data we get from the
554 FastCGI server to the client. This allows the FastCGI server to
555 release without having to wait for the client flush to complete.
556 The old behaviour can revived with the -flush argument to AppClass.
558 *) I renamed some of the directives for consistency (the old names
559 still work).
561 AppClass -> FastCgiServer,
562 FCGIConfig -> FastCgiConfig,
563 ExternalAppClass -> FastCgiExternalServer
565 *) Directive arguments are no longer case sensitive.
567 *) The module now uses hard_timeout() rather than soft_timeout. This
568 means that the module will longjump out of the request if the
569 drop-dead timeout expires (set with Apache's Timeout directive, the
570 default is 5min) or if the client closes the connection (SIGPIPE).
571 This is more typical for a Apache modules and I'm not convinced we
572 properly handle all of the error cases well enough to use
573 soft_timeout (I can think of one place we don't anyway). This means
574 your FastCGI application can see SIGPIPE.
576 *) SIGPIPE is now ignored by default in FastCGI servers spawned by
577 Apache. Without this the default behaviour is exit().
579 *) It should (I think) run now under DSO now.
581 *) The bug which prevented sending of binary data in 2.1b1 is fixed.
583 *) The broken -initial-env bug ins 2.1b1 is fixed.
585 *) Maybe some other stuff.
589 *** Well there's a big gap here. Maybe I'll go back and extract the CVS
590 commit notes and stick 'em in here.. when I get some free time. ;)
592 --robs (8 Feb 99)
595 *** Originally from docs/README..
597 Apache[X1.03.01]/mod_fastcgi[02.00.05] 19970909 unsupported
598 From: "Stanley Gambarin" <stanleyg cs.bu.edu>
600 *) Yet more changes to the source distribution. Separated out
601 the Tcl dynamic string and buffer libraries into separate files.
602 Did the same for the OS library, however, it is not really an
603 abstraction... more like a bunch of wrappers. Added to DEVNOTES
604 a note about the problem of Apache not allowing including header
605 file more than once.
607 Apache[X1.03.01]/mod_fastcgi[02.00.04] 19970908 unsupported
608 From: "Stanley Gambarin" <stanleyg cs.bu.edu>
610 *) More changes to the installation scripts. Theoretically we
611 should be able to to use the same Makefile/installation script
612 for both Apache 1.2.x and 1.3.x. Need some sort of the abstraction
613 layer to use the same source code for both 1.2.x and 1.3.x sources.
615 Apache[X1.03.01]/mod_fastcgi[02.00.03] 19970905 unsupported
616 From: "Stanley Gambarin" <stanleyg cs.bu.edu>
618 *) Created Makefile to compile the module into the archive library,
619 just like the proxy module. Also initial draft of the installation
620 script, which should work for both 1.2 and 1.3 sources of Apache.
622 Apache[01.02.04]/mod_fastcgi[02.00.02] 19970903 unsupported
623 From: "Stanley Gambarin" <stanleyg cs.bu.edu>
625 *) More source reorg. Separated out some header files. Need much
626 more work on this. Updated the TODO file. Added fcgivers.h and
627 CHANGES file to track the history.
629 Apache[01.02.04]/mod_fastcgi[02.00.01] 19970902 unsupported
630 From: "Stanley Gambarin" <stanleyg cs.bu.edu>
632 *) Source reorganization. This is done to provide a basis for later
633 functionality implementation. See TODO file for more information
634 of what possible future enhancements are possible/desired.
636 Apache[01.02.04]/mod_fastcgi[02.00.00] 19970902 unsupported
637 From: "David MacKenzie" <djm va.pubnix.com>
639 *) Create the "dynamic" dir and "mbox" as the user specified in the
640 User and Group directives instead of as root. They are created with
641 restrictive permissions, and then the module checks to see whether the
642 user specified in the User and Group directives has read, write, and
643 execute permissions on them. Those permissions had been explicitly
644 denied by creating them as "root".
646 *) Some documentation was garbled or incomplete.
648 *) When a FastCGI application can't be execl'd, the code used a
649 value of errno that may have been stomped on by intervening system
650 calls. That happened on BSD/OS 2.1, where the error_log was
651 reporting errno=25 (NOTTY) instead of the correct errno=13 (EACCES).
652 An intervening stdio call was setting errno as a side-effect, which
653 it has the right to do.
655 *) Erroneous fprintf arguments, a missing return value, an unused
656 function, missing declarations, and other problems detected by gcc
659 *) Duplicated code to create the lock file name merged into a single
660 function, closing several memory leaks.
662 *) FCGIConfig -minProcesses didn't allow a value of 0, so the last
663 FCGI app in a given dynamic class would live forever, even if it
664 hadn't been requested for weeks.
666 *) The test for whether to keep looking for dynamic app victims to
667 kill was backwards, so no dynamic apps were ever selected as
670 *) The killInterval and updateInterval were being ignored; the
671 sigsuspend() forced recalculations only when a child died,
672 instead of at the intervals specified.
674 *) When a dynamic app couldn't be started, the program SEGV'd when
675 trying to free the ipcAddrPtr twice.
677 *) Remove the dead lock file and socket when cleaning up after a
678 server whose last child has been killed, so the FastCGIHandler
679 isn't fooled into thinking there is still a process serving
680 that app.
682 *) Make file locking robust in the presence of signals.
684 *) Rename some badly named variables.
686 *) Fix typos in many comments.
688 *) Fix some memory and file descriptor leaks.
690 *) Make the blocking kill of a server closer to working.
692 *) More fixes to calculations in dynamic application management.
695 *** Originally from docs/README.OMI..
697 What's New: Version 2.0b1, 16 Apr 1997
699 *) Implemented a mechanism by which FastCGI applications are started by
700 the web server on the first request and continue running. Also, a
701 heuristics have been implemented to allow for dynamic killing of the
702 running FastCGI apps. The configuration options are supplied via
703 the new FCGIConfig directive, that is described in the
706 *) When performing internal redirect, since the original request's body
707 has already been read, do not allow the redirected request to think
708 that is has one [body].
710 *) More conditional compilation for OS/2.
712 *) Fixed occassional "Assertion failed: len > 0, file mod_fastcgi.c"
714 *) Fixed "failed assertion `count >= 0 && count <= bufPtr->length'"
716 *) Added bflush() call after bwrite() in DrainReqOutBuf function to
717 force some output to be written in the period of inactivity. This
718 circumvents the Apache's buffering during the server-push.
720 *) Added a header-parser function placeholder for compatibility with an
721 Apache source code.
723 *) Additional checks have been placed with regard to permissions of the
724 FastCGI processes. These include the existence of the file,
725 ExecCGI and IncludesNOEXEC checks, disallowing of nph- scripts, etc.
727 *) Implemented a restart cleanup, so that no parentlesses FastCGI
728 applications are left after Apache is restarted and/or terminated.
729 This was accomplished via two independent mechanisms, where the
730 first one prevents a start of the process manager on the first
731 reading of the configuration files. The second mechanism deals away
732 from Apache's implementation of fork() (via spawn_child()) and
733 implements its own forking, thus removing any dependencies on the
734 Apache to cleanup processes during termination phase.
736 *) Removed the definition of the Sigfunc, as Apache 2.0b10 defines it
737 itself in the file conf.h
739 What's New: Version 1.4.3, 15 Jan 1997
741 *) Fixed compilation warnings for various platforms, as well as
742 conditional compilation for OS/2.
744 What's New: Version 1.4.2, 12 Dec 1996
746 *) mod_fastcgi.c is ported to Apache 1.2b. Any further development
747 will proceed under this version of Apache web server.
749 *) As the result of porting, the "include virtual" construct of SSI
750 will now work correctly using either <Location> or <Directory>
753 What's New: Version 1.4.1, 4 Dec 1996
755 *) Checks have been removed from the ScanCGIHeaders that provided
756 for the presence of both Status and Location headers as being
757 an error. Contradictory to CGI/1.1 Internet Draft, both of
758 these headers are used by the current CGI applications.
760 What's New: Version 1.4, 22 Nov 1996
762 *) Added the -port option to AppClass, allowing TCP/IP communication.
763 Added the -socket option to AppClass, allowing Unix domain
764 communication via a configurable pathname.
766 *) Added the ExternalAppClass directive, allowing TCP/IP
767 communication with remote FastCGI applications.
769 *) The handler had its own code for generating HTTP response headers;
770 now it uses Apache's. This reduces the size of the module.
771 More importantly, it fixes the bug in which "include virtual"
772 sees the HTTP response headers.
774 *) The response header parser performed very little checking.
775 Now the parser enforces the guidelines in the CGI/1.1
776 Internet-Draft: Status and Location are mutually exclusive,
777 Location can only be a response to GET or HEAD,
778 CGI response headers can't be repeated, etc. (The CGI response
779 headers are the ones the handler interprets: Status, Location,
780 and Content-type.)
782 *) The response header parser used to miss CGI headers
783 with no whitespace after the colon, e.g. "Status:200 OK".
785 *) The response header parser sometimes interpreted the first line
786 of content as an RFC822 continuation line.
788 *) The handler implemented a nonstandard version of Location
789 which never used internal redirects. The handler
790 now attempts to implement Location as specified in the
791 CGI/1.1 Internet-Draft. The module documentation explains
792 the new behavior.
794 *) Error log entries from the response header parser were
795 pretty uninformative; they are better now. If a header is
796 malformed, the log entry includes it. If the headers are
797 unterminated rather than malformed, the log entry says that,
798 and says how many bytes were received from the app.
800 *) When the application manager forked a new process, and that
801 process ran into trouble before executing the first instruction
802 of application code, the process used to exit with status =
803 errno. This made certain configuration problems (e.g. incorrect
804 file permissions when server parent is root) quite difficult
805 to pin down. Now the failing child process opens up the error log
806 and writes an informative entry before exiting.
808 *) The module now correctly handles a slash at the end of the
809 DocumentRoot directive. This was a one-line fix.
811 What's New: Version 1.3.3, 17 Oct 1996
813 *) The module now registers its request handler under the name
814 fastcgi-script in addition to the name application/x-httpd-fcgi.
815 This was a one-line addition to the module, but had quite
816 a large impact on the documentation and sample configuration.
818 What's New: Version 1.3.2, 27 Sept 1996
820 *) On some systems (SunOS, Linux?), fopen for append has a bug
821 that strikes when two processes append to the same file.
822 This bug causes the process manager to corrupt the error log.
823 Work around the bug by calling open, then fdopen. A patch
824 to Apache 1.1.1 is also required, as described in mod_fastcgi.html.
825 (Reported by Bob Ramstad.)
827 What's New: Version 1.3.1, 17 Sept 1996
829 *) On Linux and SunOS, the Apache default user_id (-1) is not a
830 legal value of uid_t, so cast it. (Reported by Bob Ramstad,
831 Scott Langley, others.)
833 *) On some systems (Linux, some Solaris?, Irix?), connect requires
834 write access to a Unix Domain socket, so provide it. (Reported
835 by Scott Langley, <freeform wired.com>, others.)
837 *) If you hit a .fcg file, but there's no AppClass defined, the
838 error should be NOT_FOUND instead of SERVER_ERROR. (Reported
839 by Michael Smith.)
841 What's New: Version 1.3, 4 Sept 1996
843 *) Module sometimes busy-waited in FastCgiDoWork. Fixed.
845 *) Module violated the Apache buff abstraction.
846 Fixed. Might now work with SSL (not tested).
847 As part of the fix, eliminated support for
848 Apache 1.0x versions.
850 *) Module failed to chmod the Unix domain listening sockets
851 it created, so protections were set according to the current
852 umask. Fixed.
854 *) Module forked too many process manager processes: One
855 per AppClass. When the Apache parent ran as root, these
856 process manager processes ran as root. New process
857 manager is a single process (only started if AppClass is
858 used) and runs with same privileges as other children.
859 The new process manager doesn't do any polling, so
860 there's less system overhead than before.
862 *) AppClass insisted on getting at least two arguments. Fixed.
864 *) Module used setjmp/longjmp, causing compiler warnings
865 on some platforms (e.g. Linux.) The module no longer
866 uses setjmp/longjmp.
868 *) Module created listening sockets in /tmp, where they were
869 sometimes wiped out by cleanup scripts. Added FastCgiIpcDir
870 directive to give control over the location of listening
873 *) Module wrote error log entries without a timestamp. Fixed.
875 *) AppClass directive wrote error messages to stderr in addition
876 to returning a char * message to the Apache core. Fixed.
878 What's New: Version 1.2, 3 June 1996
880 *) Ported from Apache-1.0-based code to Apache-1.1b2 internals by
881 ["Ralf S. Engelschall" <rse en.muc.de>]
882 Add version string: APACHEVERSION macro to mod_fastcgi.c
884 *) chown FastCGI socket to user_id and setuid to user_id for app
885 class processes
887 *) Modify GetFromStream() by having it call an OS dependent
888 function GetStreamSize(FILE *) which uses FILE internal data member.
889 Linux users might need to modify GetStreamSize().
891 What's New: Version 1.1, 10 May 1996
893 *) If you specify a non-existent executable in the AppClass directive,
894 or if the file exists and it does not have execute permission you
895 get a constant stream of error messages telling you that "program
896 terminated due to a signal".
898 *) The mod_fastcgi module should use the standard Apache error logging
899 facility instead of writing to stderr.
901 Version 1.0, 30 April 1996