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Revision 1.38 - (show annotations)
Mon Oct 21 19:11:55 2002 UTC (18 years, 9 months ago) by nmav
Branch: MAIN
Changes since 1.37: +28 -0 lines
*** empty log message ***

1 ** Changes from 0.0.7 to 0.0.8
2 * Better pthread detection.
3 * Some changes to compile in gcc 2.95
4 [Ported from Boa 0.94.14rc1]
5 * add [optional, Linux-only] check for sendfile system call
6 * add new state, IOSHUFFLE, which utilizes sendfile (or
7 emulates it using the request's buffer, otherwise)
8 * make the default socket size 32K. The client_stream_size stays constant
9 at 8K, and the new 'buffer' size is 4K
10 Note also that the new code uses the "default" socket buffer size
11 it obtains with the first accept()ed socket.
12 * make default behavior be to leave stderr alone, but tie it
13 to cgilog otherwise
14 * use --disable-sendfile to disable sendfile support
15 sendfile support for files > 100K is default, now.
16 It's significantly faster and easier than the alternative
17 * umask ~0770 before exec
18 * tie stdout to the access_log, unless there is no access_log,
19 in which case tie it to /dev/null
20 * use sensible defaults for umask (077) and (027 for CGI)
21 * add and document new parameters (CGILog and CGIumask)
22 * vast improvements to the cgi-test.cgi program, by Jon Nelson
23 and Landon Curt Noll.
24 * next 3 items by Don Mahurin (patches modified somewhat):
25 * pidfile patch
26 * default mime_types patch
27 * NCSA environment environment variables wrapped in
28 #ifdef USE_NCSA_CGI_ENV
29 * fix some escaping issues with the directory indexer
30 (Ulf Harnhammar)
31 * backport poll support from 0.95
32
33 ** Changes from 0.0.6 to 0.0.7 - 10/10/2002
34 * Added support for large files in 32 bit systems.
35 * Added support for SSL_* variables in CGIs.
36 * Added options in configuration file, to request and verify
37 a client certificate.
38 * The headers of HIC-CGIs are now parsed by the server.
39 * Corrected behavour in SIGHUP signal handling, to reread
40 the SSL related variables.
41 * Children and HIC threads are now killed using a signal, to avoid
42 unexpected errors, and memory leaks.
43
44 ** Changes from 0.0.5 to 0.0.6 - 03/10/2002
45 * Compatibility functions are now automatically included in hydra, if
46 they are not found by the configure script.
47 * Replaced the included scandir function, with the one in libc.
48 * Fixed code, which compiled fine with gcc 3.2, but didn't compile at
49 all, with any other compiler!
50 * Improved the MaxConnections directive semantics.
51 * Added a very primitive mime.types file in examples/ directory.
52
53 ** Changes from 0.0.4 to 0.0.5 - 02/10/2002
54 * If a requested CGI is not accesible then send 404 not found, instead
55 of trying to execute it.
56 * Corrected several stuff in HIC CGI handler. This allows Cookies,
57 POST data and Queries to work properly.
58
59 ** Changes from 0.0.3 to 0.0.4 - 30/09/2002
60 * Added support for If-Range, If-Match, If-None-Match HTTP/1.1 header
61 fields. The server also generates ETag headers for static content using
62 the last modified field of the file, and the file size. This makes
63 Hydra cache friendly.
64 * Added support for multiple HIC threads. This gives a boost to script generation
65 since they are no longer generated sequentially.
66
67 ** Changes from 0.0.2 to 0.0.3 - 28/09/2002
68 * Added support for dynamic modules that handle CGIs
69 internally (HIC). That way Hydra can run PHP.
70 * Fixes in CGI execution. CGIs that are not passed from aliasing
71 functions now properly set PATH_INFO and PATH_TRANSLATED.
72 (Needs further cleanup).
73 * Cleaned up SSL support. Now hydra can be compiled even if gnutls
74 is not available.
75
76 ** Changes from Boa/0.94.13 to Hydra/0.0.2 - 26/09/2002
77 * Added support for SSL 3.0 and TLS 1.0 protocols.
78 * Added support for multiple CPU's by making the server
79 run over a pool of threads.
80 * Changed the file caching code. The mmap() calls are cached until
81 the mmap list table is full.
82 * Added support for HTTP/1.1 ranges.
83 * Added support for hostname based virtual hosting.
84 Also changed the semantics of Alias, ScriptAlias and Redirect, to
85 take advantage of the host based virtual hosting.
86 * Added support for the TCP_CORK tcp option in linux.
87 * Cleaned up the CGI handling (gunzip, indexer are treated as CGIs)
88 * Enhanced grammar to handle 3 and 4 argument options.
89 * Added support for multiple directory indexes.
90 * Dropped support for gunzip.
91 * Use automake to create the distribution.
92
93 ** Changes from 0.94.12 to 0.94.13
94 * Change many instances of log_error_mesg + exit to DIE macro
95 * Change all instance of log_error_mesg (without exit) to WARN macro
96 * do a much better job of checking return values from malloc and
97 especially strdup.
98 * check results of calling umask and getrlimit
99 * server_s is no longer a global int
100 * check results of fork via switch instead of if (fork())
101 * check for getopt.h and include it if found
102 * remove unused #defines, and add WARN macro, and replace
103 many calls to log_error_mesg(..) with WARN macro
104 * fix bug in get_commonlog_time where time_offset calculation was
105 the opposite of what it should be ('-' and '+' were swapped)
106 * fix compatability bug with old and newer versions of flex/yacc
107 * add check for AC_FUNC_MMAP to configure.in
108 * fix really lame thinko in normalize_path, which would prepend the
109 results of earlier calls to results from later calls
110 * Add MaxConnections, a configuration directive which allows the
111 user to specify the maximum number of connections that Boa will
112 accept concurrently.
113 * add SERVER_ADDR and REQUEST_URI to environment of CGI
114 * handle SIGBUS during writes of data that has been memory mapped
115 * minor optimization in select.c that prevents DEAD requests from
116 being added to the block set
117 * fix bug in CGI environment script_name - closes sf.net bug #576725
118 * make 'status' variable local to requests.c, not local to every file
119 by forgetting to declare 'extern' in globals.h :-|
120 * make getsockname non-fatal, and do it every time because we may
121 need it for the CGI
122 * some minor refactoring optimizations in hash.c
123
124 ** Changes from 0.94.11 to 0.94.12
125 * Renamed Changelog ChangeLog, and moved up to top-level directory
126 * Next 3 items due in part or whole thanks to
127 Liam Widdowson
128 * when printf'ing a pid type, force to int, because it could be
129 something else on other platforms. Should probably change it to
130 a long, and use that.
131 * backported chroot commandline support from 0.95
132 * backported support for strdup, strstr, alphasort, and scandir
133 from 0.95
134 * Fixed src/Makefile.in -- it didn't remove index_dir.o
135 * backport create_temporary_file from 0.95
136 (instead of using tmpnam)
137 * Allow non-standard date format 31 September 2000 23:59:59 GMT
138 Patch by Landon Curt Noll
139 * Skip whitespace before HTTP/major.minor
140 Adapted patch from Landon Curt Noll
141 * open /dev/null first thing (affects chrooting)
142 * properly handle sigalrm -- use sigalrm_flag and sigalrm_run
143 instead of handling the signal in the signal handler
144 * update manpage slightly
145 * send 400 BAD Request when resource does not start with '/'
146 * add grp.h to boa.h's includes -- remove from boa.c and config.c
147 * removed duplicate header includes from boa.c, config.c, get.c,
148 ip.c, request.c, response.c
149 * factor out creating the server socket and dropping privs
150 into create_server_socket and drop_privs
151 * type all functions in boa.c (except main) as static
152 * set umask after opening /dev/null
153 * tie stdin/stdout to /dev/null before commandline parse
154 * removed old, unused chroot code
155 * move builds_needs_escape earlier in the startup
156 * move fork later in the startup
157 * type all c_set_* as static in config.c
158 * don't bother trying to change uid/gid (or error if the
159 requested uid/gid doesn't exist) if not UID 0
160 * return more appropriate error code when foo.html gives
161 access denied, but foo.html.gz gives some other error
162 (essentially report error associated with foo.html, not foo.html.gz)
163 * send NOT Implemented when an unknown method is attempted
164 * always attempt a 32k read right before close
165 (stopgap until blackhole can be merged)
166 * allow more than 1 space in logline between method, resource,
167 and http version
168 * don't use inline functions
169 * update configure.in so that autoconf 2.50 doesn't complain (as much)
170 * properly use VPATH and srcdir according to autoconf docs
171 * change curly-braces to parentheses in Makefilein
172 * use $^ instead of manually listing the dependencies in Makefile.in
173 * remove tests section in Makefile.in
174 * write tags not TAGS in Makefile.in
175 * Add gethostbyname and inet_aton to function checks
176 * Add code from 0.95 which checks for socket in -lsocket,
177 inet_aton in -lresolv, and gethost{by}name in -lnsl
178 * Also remove broken bc-based "how big is an unsigned int" checks:
179 assume minimum of 32 bits and check in escape.c at runtime.
180 * Added new file: README.chroot.solaris, based on a
181 modified version by Liam Widdowson
182 * Add check_struct_for.m4, which allows us to check a structure
183 for a member (found at http://www.gnu.org/software/ac-archive/
184 authored by Wes Hardaker
185 * Call "aclocal -I ." to rebuild aclocal.m4
186 * Using new check-struct-for-member autoconf macro, check
187 for tm_gmtoff and tm_zone in struct tm -- useful in
188 portability tests for localtime.
189 * Also check sockaddr_in for structure sin_len so we can set
190 it properly.
191 * index_dir.c (which ends up in boa_indexer) can now be compiled
192 with USE_LOCALTIME, and if so, it will report the local time
193 using the timezone name. Otherwise it uses UTC time and UTC
194 timezone designation.
195 * fix buglet in mmap_cache.c which shows up when under
196 heavy load by many different files.
197 Found and squashed by Michal Kara
198 * normalize paths on Aliases, log files, server root, dirmaker
199 This makes sure that paths are 'absolute'
200 * don't generate DOCUMENT_ROOT or SERVER_ROOT,
201 CGIs have no business knowing that information
202 * if CGI, chdir to the cgi's root path
203 Bug found by Matt Callaway
204 * remove ChrootPath and PidFile directives from the parser
205 (they aren't used anyway)
206 * keep track of maximum file descriptor in use to optimize call
207 to select()
208 * apply IPv6 patch from Jari Korva
209 * optimize keep-alive copy data routine
210 * try to use memcpy instead of strcpy/strcat in more places (alias.c)
211 * update .depend file
212 * use fcntl + GET_FL to get a file descriptor's flags, then
213 add or remove only the bits we want to set. This prevents
214 accidentally setting or unsettings bits we don't have anything
215 to do with inadvertantly. (removed, at least temporarily.
216 Show me a system where it is needed -- LRD)
217 * make sure to call FD_ZERO when we handle a restart
218 * in read.c, don't call boa_perror on read failure -- socket is
219 dead or messed up anyway, no reason to try to write to it.
220 * explicit .SUFFIXES in Makefile.in
221 * boa.objdump target added
222 * use @MAKE_SET@ (for when $(MAKE) != "make")
223 * add -Wundef -Wwrite-strings -Wredundant-decls -Winline to GCC_FLAGS
224 * change Paul Phillips' and Larry Doolittle's emails in source
225 * add --disable-debug, --enable-profile, --with-dmalloc, and --with-efence
226 * test for failed-but-return-was-successful setuid:
227 http://www.securityfocus.com/bid/1322
228 * use _exit not exit in CGI child
229 * always place new keepalive request on blocked list, we can't be
230 sure of the state of the active list, and since enqueue places
231 things at the *front* of the list, it doesn't do us much good
232 to place the new request on the active list anyway.
233 * update some Copyright statements for 2002
234 * When comparing the uri to an alias, only compare if
235 the uri length is greater than or equal to the length of the alias
236 * in init_script_alias, make sure to check for document_root before
237 trying to use it
238 * script_name is now just a copy of the request, rather
239 than some complicated variation on the pathname
240 * change the way the CGI environment is handled.
241 Now, it is allocated at request allocation time, and exists
242 throughout the life of the structure.
243 * check memory allocations, etc.. when creating the static
244 CGI environment and when making new CGI environment variables
245 * wait until process_option_end to call unescape_uri, clean_pathname,
246 and translate_uri
247 * remove debian package information
248 * move RedHat packaging information to contrib
249 * remove tests -- they weren't usable anyway
250 * add some new hash routines, and use djb2 (a variant on a
251 hash algorithm popularized by Dan J. Bernstein)
252 * a side-effect of the new hash routines is a bugfix,
253 involving negative return values from hash routines.
254 This has been fixed.
255 * add a routine, show_hash_stats, which is called with other
256 statistical output via sigalarm
257 * remove some duplicate prototypes from config.c
258 * make simple_itoa take an unsigned int
259 * try to make NOBLOCK handling in compat.h compatible with Solaris
260 * make sure to update current_time before calling signal handlers
261 * alter primary loop to make sure that select gets called even
262 when there are requests that are not blocking, and call fdset_update
263 and process_requests (when appropriate) after signal handlers but
264 before select to make sure that blocked requests are still handled
265 by select after a sighup. (Thanks to Karl Olsen)
266 * pull select loop into select.c
267 * poll server socket once per active connection
268 * add send_r_service_unavailable and use it when appropriate
269 * state uptime in seconds at normal program termination
270 * include sys/fcntl.h if it is found by configure
271 * fix POST bug where a content-length < 0 would cause Boa to
272 consume its full share of CPU until killed
273 Bug report by Landon Curt Noll
274 * add CGIPath configuration variable
275 based upon a patch by Landon Curt Noll
276 * add function boa_atoi, which wraps atoi, but does not
277 accept negative values. Additionally, it checks to make sure
278 the converted value and the original value are the same, avoiding
279 issues like "124.3" -> "123" and "123abc" -=> "123".
280 Either a value is an int or it isn't - no middle ground.
281 * use boa_atoi to convert content-length from client.
282 * add new #define - SINGLE_POST_LIMIT_DEFAULT, which defines
283 (in bytes) the *default* single_post_limit.
284 * single_post_limit is now in bytes.
285 * when adding aliases, only "normalize" paths that start
286 with "./" - this is a departure from previous behavior
287 * add "?" to the list of characters that it is safe to leave unescaped
288 * clean up Makefile.in of no-longer-pertinent comments
289 * add send_r_bad_gateway and use it
290 * tie stderr to either cgi_log_fd or devnullfd - either way
291 make sure stderr is a valid filehandle before cgi execution
292 * cgi_env is no longer allocated, it's part of the struct now
293 * fix bug in CgiPath logic
294 * when unable to allocate memory for an environment variable, log it
295 * add clear_common_env, which de-allocates the cgi_common_env stuff
296 [NEVER USE THIS outside of a terminal signal handler!]
297 * don't be so wasteful of memory in normalize_path
298 * adapted fix for alias expansion from Brieuc Jeunhomme
299
300 ** Changes from 0.94.10.1 to 0.94.11
301 * use LIBS in Makefile.in (which propagates from autoconf)
302 * properly free memory allocated by scandir in index_dir.c
303 * rearrange some header files and includes
304 * on reads and writes, don't check for -1, check for < 0
305 * include fix by William Meadows
306 for escape.c which fixes segfaults due to improper allocation
307 * above fix by William Meadows no longer needed;
308 escape.c and escape.h rewritten by Larry Doolittle -- requires
309 at least 32 bit words, but is correct (jdn's 1st attempt was faulty)
310
311 ** Changes from 0.94.10 to 0.94.10.1
312 * Actually update the SERVER_VERSION in src/defines.h
313
314 ** Changes from 0.94.9 to 0.94.10
315 * Fixes escaping rules
316 * Fixes segfault when directory_index is undefined and
317 directory needs to be generated
318 * adds dummy signal handlers for SIGUSR1 and SIGUSR2 (Closes SF #425921)
319 * Update documentation regarding mime.types (Closes Debian #69991)
320 * Make sure documentation builds (Closes Debian #110818)
321
322 ** Changes from 0.94.8.3 to 0.94.9
323 * src/Makefile.in updated to take CFLAGS, LIBS, and LDFLAGS
324 from autoconf
325 * Update escaping rules with latest RFC
326 * unescape_uri skips fragments and also stop parsing at '?'
327 * Don't accept fd over FD_SETSIZE in request.c:get_request
328 * use backported documentation from 0.95
329 * make sure POST fd gets closed even on client cancel
330 * use backported index_dir.c from 0.95
331 * support subdirectories in ScriptAlias directories
332 * add SinglePostLimit (int, in Kilobytes) to config system
333 * check for ENOSPC on body write
334 * use environment variable TMP (or "/tmp" if not available),
335 and chdir there when boa exits.
336 * add 1-time-only hack to make a 32kB read at the end of a request
337 on POST or PUT
338 * close unused file descriptors (/dev/null in boa.c, and the
339 unused part of the pipes call in cgi.c)
340 * made Makefile.in VPATH happy
341
342 ** Changes from 0.94.8.2 to 0.94.8.3
343 * Move unescape_uri *before* clean_pathname to prevent
344 encoding of / and .. in pathname
345 * wrap execution of GUNZIP in cgi.c with #ifdef GUNZIP
346 * stop parsing when fragment found in URL ('#')
347
348 ** Changes from 0.94.8.1 to 0.94.8.2
349 * close pipes[1] in child and generate HTTP_REFERER environment
350 variable in cgi.c
351 * Minor changes to the Debian package
352
353 ** Changes from 0.94.8 to 0.94.8.1
354 * Change umask call from (umask(0600)) to (umask(~0600))
355
356 ** Changes from 0.94.7 to 0.94.8
357 * Fix major thinko in temp file permissions
358 * unlink temporary file immediately following creation
359 * implement maximum # of active connections at 10 less than RLIMIT_NOFILE
360 to avoid or eliminate crashes resulting from running out of
361 file descriptors
362 * Fix thinko in POST
363
364 ** Changes from 0.94.6 to 0.94.7
365 * STDIN and STDOUT are now tied to /dev/null
366 * sets PATH_MAX to 2048 if not defined (for Hurd)
367 * core dumps (should never happen) would be located in /tmp
368 * alter behavior when select gets a EBADF
369 * add translation for the \" char -> &quot;
370 * remove use of sys_errlist. Use perror.
371 * better makedist.sh (still a stupid program though)
372
373 ** Changes from 0.94.5 to 0.94.6
374 * Removed doc++ commenting
375 * Removed erroneous debugging statments
376 * Move some stuff out of config.c (read_config_file) to boa.c
377 * Altered some of fixup_server_root()
378 * Bug fix in get.c re: automatic gunzip
379 * Added some stubs for chroot code (*not* ready yet)
380
381 ** Changes from 0.94.4 to 0.94.5
382 * Alteration of most of the comments and such for doc++ use
383 * Fixed buffer overflow in alias.c
384 * Fixed buffer underflow in util.c
385
386 ** Changes from 0.94.3 to 0.94.4
387 * Better escaping of data to user, both for HTTP headers and HTML body
388 * Proper escaping of output in CGI example perl scripts
389
390 ** Changes from 0.94.0 to 0.94.2
391 * Fixed obnoxious pipeline bug
392 * Fixed (sorta) a compilation/core bug for *BSD systems
393 Original code by Thomas Neumann
394 * Moved to GPLv2
395 * Changed manpage to section 8
396 * boa.sgml now references a .png file instead of evil .gif
397
398 ** Changes from 0.93.19.2 to 0.94.0
399 * Added UseGMT to the configuration parser
400 * util.c commonlog now logs in Apache-style commonlog time format
401 * Remove SO_SNDBUF on-start message
402
403 ** Changes from 0.93.19 to 0.93.19.2
404 * Changed to combined log (from NCSA access_log format) ala Drew Streib
405 * Altered POST cgi code to handle bug in Netscape
406 * SO_SNDBUF changes by Larry
407
408 ** Changes from 0.93.17.2 to 0.93.19 (all 0.93.18.x changes inclusive)
409 * Update of some copyright statements for 99
410 * Replacement of sprintf with strlen/memcpy or strcpy/strcat
411 wherever possible
412 * Significant rearrangement in alias.c, minor functional differences
413 (some CGI environment variables handled differently)
414 * Removal of die function. Replace with log_err_mesg and exit.
415 * initial IPv6 stubs and support
416 * Move #include "config.h" to top of boa.h where it will do some good
417 * Stubs and functions for strstr and strdup
418 * Seperation of buffer code into it's own file
419 * Significant changes to cgi.c et al (cgi_header.c, etc...)
420 * Speed patches by removal of "extra" calls to time(): Use global variable!
421 * pipelining changes... it works now.
422 * require content-length from clients (ala rfc1945)
423 * alter body_read and body_write to work more efficiently with known content-length
424 * move read(2) part to *after* parsing...
425 * added support for additional header message in send_redirect_temp
426 * change use of NO_ZERO_FILL_LENGTH to offsetof() use
427 * Remove SO_REUSEADDR setting on each client socket, Paul Saab
428 * Avoid SO_SNDBUF setting if possible
429 * Large quantities of otherwise not-insignificant changes
430
431 ** Changes from 0.93.17.2 to 0.93.17.3
432 * Put on-the-fly directories back in, stripped down from the 0.92 version
433 * Fixed DocumentRoot, ServerAdmin and ServerName null-value handling in
434 CGI environment generation
435 * Fixed argument order in Script* directives (bug introduced in 0.93.17.2)
436 * Got rid of MAX_CGI_VARS because it was not being used consistently, or
437 for that matter, at all, really.
438 * Added some more FASCIST_LOGGING to cgi.c
439 * Minor mmap patch by LRD for request.c
440
441 ** Changes from 0.93.17.1 to 0.93.17.2
442 * Added "Listen" directive for server bind address, as most recently
443 suggested by David N. Welton
444 * Put virtualhost feature in, was experimental in 0.92q
445
446 ** Changes from 0.93.16.2 to 0.93.17.1
447 * New config file parser (supposed to be more maintainable) (LRD)
448 * Support for "|command" and ":host:port" syntax for logfiles (untested) (LRD)
449
450 ** Changes for the 0.93 version **
451 * Huge quantities of changes
452 * keepalive Bugfix in 0.93.16.2 by Jon Nelson
453 report by Craig Silverstein of Google fame.
454 * patch for config.h by Craig Silverstein
455 * fixed "Parent Directory" problem in boa_indexer for title "/"
456 (Debian bug #36165)
457 * More Craig Silverstein
458 modifications, namely:
459 ErrorLog (if omitted, print to stderr)
460 DocumentRoot (if omitted, can only server user-dir files)
461 DirectoryIndex (if omitted, always use DirectoryMaker)
462 MimeTypes (if omitted, don't load -- users can use AddType instead)
463
464
465 ** Changes from v0.92o to v0.92p **
466
467 * Documented misbehavior of CGI, SIGHUP, short aliases, stale dircache.
468 * Documented how to patch signals.c for use on SunOS.
469 * Closed file descriptor leak when redirecting a bare directory URL to
470 one with an appended "/".
471 * Closed potential file descriptor leak if errors encountered generating
472 on-the-fly index.
473 * Cleaned up include file handling to be simultaneously compatible with
474 Linux, SunOS, HP-UX, and AIX.
475 * Supress message body for codes 302, 400, 403, 404, 500, and 501 if
476 incoming request is "HEAD".
477
478 ** Changes from v0.91 to v0.92o **
479 (0.92o released 27 December, 1996)
480
481 * Maintenance handover from Paul Phillips to Larry Doolittle
482 * Changed (char)NULL to '\0'
483 * Cleaned up signal handler prototypes in signals.c
484 * Modified handling of CGI environment variable PATH_TRANSLATED,
485 should now work the same as NCSA.
486 * More conservative buffer size in add_cgi_env()
487 * Build argv list for a CGI script according to spec
488 * Speedup process_header_line, eliminate potential memory leak
489 * Occasional spelling fixes and lint removal
490 * Added REMOTE_PORT env var for CGI scripts, to allow easy ident lookups
491 * Changed rfc822 time format
492 * Log timeouts and broken connections
493 * Fix mime suffix handling for filenames with multiple "."s
494 * Initialize conn->time_last, fixes bug with rapid-fire connections
495 * Performance tweak to req_write()
496 * Changed http_version from float to char[8]
497 * Rewrote on-the-fly directory generation; it works now
498 * Added user configurable dircache directory in boa.conf
499 * Fixed "simple" response bugs, including incorrect CGI handling
500 * Keepalive (HTTP/1.1 draft) support, mostly by Jon Nelson
501 * Close data_fd in 304 Not Modified flow of control
502 * Switch socket flags to non-blocking before cgi handoff
503 * Try to handle errno properly in the face of multiple errors
504 * Close fd's of all other transactions before cgi handoff
505 * Move real work for sighup and sigchld out of signal handler
506 * Fix free(req->cgi_env) in request.c
507 * Response message cleanup - better match to HTML-2.0 DTD
508 * Experimental Virtual Host code from Russ Nelson
509 * Expand buffer for escaped URI in init_get()
510 * SIGTERM triggers lame duck mode until all pending transactions complete
511 * Close and unlink temp file for POST in parent process
512
513 ** Changes from v0.90 to v0.91 **
514
515 * Cleaned up main while loop
516 * Optimized request line parsing
517 * Added state machine for header reads -- necessary to deal wtih
518 possibility of obtaining header data in multiple reads. This
519 also allows interactive use of server.
520 * Added 500/501 return codes for various conditions
521
522 ** v0.90 **
523
524 * Initial release
525

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