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Revision 1.45 - (hide annotations)
Sun Oct 27 10:06:28 2002 UTC (18 years, 11 months ago) by nmav
Branch: MAIN
Changes since 1.44: +4 -0 lines
Added file access control lists per virtual host. Based on patch for
Boa by Peter Korsgaard <jacmet@sunsite.dk>.

1 nmav 1.42 ** Changes from 0.0.8 to 0.0.9
2     * Long offsets are not used by default.
3     * Use of pipes instead of temporary files, if the post data sent
4     are less than PIPE_BUF.
5 nmav 1.44 * More consistent logging. The server's hostname or "unknown"
6 nmav 1.43 are prepended to the log message.
7 nmav 1.44 * Corrected redirection/aliases behaviour, to match the documented one.
8 nmav 1.45 * SSLParamsRefresh was renamed to MaintenanceInterval and is more
9     generic, since it includes some server cleanups.
10     * Added file access control lists per virtual host. Based on patch for
11     Boa by Peter Korsgaard <jacmet@sunsite.dk>
12 nmav 1.42
13 nmav 1.41 ** Changes from 0.0.7 to 0.0.8 - 25/10/2002
14 nmav 1.36 * Better pthread detection.
15 nmav 1.40 * Better detection of dlopen call.
16 nmav 1.37 * Some changes to compile in gcc 2.95
17 nmav 1.40 * Added support for FreeBSD's sendfile (untested).
18 nmav 1.38 [Ported from Boa 0.94.14rc1]
19     * add new state, IOSHUFFLE, which utilizes sendfile (or
20     emulates it using the request's buffer, otherwise)
21     * make the default socket size 32K. The client_stream_size stays constant
22     at 8K, and the new 'buffer' size is 4K
23     Note also that the new code uses the "default" socket buffer size
24     it obtains with the first accept()ed socket.
25     * make default behavior be to leave stderr alone, but tie it
26     to cgilog otherwise
27 nmav 1.40 * add [optional, Linux-only] check for sendfile system call
28 nmav 1.38 * use --disable-sendfile to disable sendfile support
29     sendfile support for files > 100K is default, now.
30     It's significantly faster and easier than the alternative
31     * umask ~0770 before exec
32     * tie stdout to the access_log, unless there is no access_log,
33     in which case tie it to /dev/null
34     * use sensible defaults for umask (077) and (027 for CGI)
35     * add and document new parameters (CGILog and CGIumask)
36     * vast improvements to the cgi-test.cgi program, by Jon Nelson
37     and Landon Curt Noll.
38     * next 3 items by Don Mahurin (patches modified somewhat):
39     * pidfile patch
40     * default mime_types patch
41     * NCSA environment environment variables wrapped in
42     #ifdef USE_NCSA_CGI_ENV
43     * fix some escaping issues with the directory indexer
44     (Ulf Harnhammar)
45     * backport poll support from 0.95
46 nmav 1.36
47 nmav 1.35 ** Changes from 0.0.6 to 0.0.7 - 10/10/2002
48 nmav 1.26 * Added support for large files in 32 bit systems.
49 nmav 1.27 * Added support for SSL_* variables in CGIs.
50 nmav 1.28 * Added options in configuration file, to request and verify
51     a client certificate.
52 nmav 1.34 * The headers of HIC-CGIs are now parsed by the server.
53 nmav 1.33 * Corrected behavour in SIGHUP signal handling, to reread
54 nmav 1.29 the SSL related variables.
55 nmav 1.33 * Children and HIC threads are now killed using a signal, to avoid
56     unexpected errors, and memory leaks.
57 nmav 1.26
58 nmav 1.24 ** Changes from 0.0.5 to 0.0.6 - 03/10/2002
59 nmav 1.21 * Compatibility functions are now automatically included in hydra, if
60     they are not found by the configure script.
61 nmav 1.22 * Replaced the included scandir function, with the one in libc.
62 nmav 1.23 * Fixed code, which compiled fine with gcc 3.2, but didn't compile at
63 nmav 1.22 all, with any other compiler!
64 nmav 1.23 * Improved the MaxConnections directive semantics.
65 nmav 1.25 * Added a very primitive mime.types file in examples/ directory.
66 nmav 1.21
67 nmav 1.20 ** Changes from 0.0.4 to 0.0.5 - 02/10/2002
68 nmav 1.18 * If a requested CGI is not accesible then send 404 not found, instead
69     of trying to execute it.
70 nmav 1.19 * Corrected several stuff in HIC CGI handler. This allows Cookies,
71     POST data and Queries to work properly.
72 nmav 1.18
73 nmav 1.17 ** Changes from 0.0.3 to 0.0.4 - 30/09/2002
74 nmav 1.14 * Added support for If-Range, If-Match, If-None-Match HTTP/1.1 header
75     fields. The server also generates ETag headers for static content using
76 nmav 1.15 the last modified field of the file, and the file size. This makes
77     Hydra cache friendly.
78 nmav 1.16 * Added support for multiple HIC threads. This gives a boost to script generation
79 nmav 1.22 since they are no longer generated sequentially.
80 nmav 1.14
81 nmav 1.13 ** Changes from 0.0.2 to 0.0.3 - 28/09/2002
82 nmav 1.11 * Added support for dynamic modules that handle CGIs
83     internally (HIC). That way Hydra can run PHP.
84     * Fixes in CGI execution. CGIs that are not passed from aliasing
85     functions now properly set PATH_INFO and PATH_TRANSLATED.
86     (Needs further cleanup).
87 nmav 1.12 * Cleaned up SSL support. Now hydra can be compiled even if gnutls
88     is not available.
89 nmav 1.11
90 nmav 1.9 ** Changes from Boa/0.94.13 to Hydra/0.0.2 - 26/09/2002
91 nmav 1.2 * Added support for SSL 3.0 and TLS 1.0 protocols.
92     * Added support for multiple CPU's by making the server
93     run over a pool of threads.
94     * Changed the file caching code. The mmap() calls are cached until
95     the mmap list table is full.
96     * Added support for HTTP/1.1 ranges.
97 nmav 1.4 * Added support for hostname based virtual hosting.
98 nmav 1.5 Also changed the semantics of Alias, ScriptAlias and Redirect, to
99     take advantage of the host based virtual hosting.
100 nmav 1.3 * Added support for the TCP_CORK tcp option in linux.
101     * Cleaned up the CGI handling (gunzip, indexer are treated as CGIs)
102 nmav 1.10 * Enhanced grammar to handle 3 and 4 argument options.
103 nmav 1.7 * Added support for multiple directory indexes.
104     * Dropped support for gunzip.
105 nmav 1.8 * Use automake to create the distribution.
106 nmav 1.2
107 nmav 1.1 ** Changes from 0.94.12 to 0.94.13
108     * Change many instances of log_error_mesg + exit to DIE macro
109     * Change all instance of log_error_mesg (without exit) to WARN macro
110     * do a much better job of checking return values from malloc and
111     especially strdup.
112     * check results of calling umask and getrlimit
113     * server_s is no longer a global int
114     * check results of fork via switch instead of if (fork())
115     * check for getopt.h and include it if found
116     * remove unused #defines, and add WARN macro, and replace
117     many calls to log_error_mesg(..) with WARN macro
118     * fix bug in get_commonlog_time where time_offset calculation was
119     the opposite of what it should be ('-' and '+' were swapped)
120     * fix compatability bug with old and newer versions of flex/yacc
121     * add check for AC_FUNC_MMAP to configure.in
122     * fix really lame thinko in normalize_path, which would prepend the
123     results of earlier calls to results from later calls
124     * Add MaxConnections, a configuration directive which allows the
125     user to specify the maximum number of connections that Boa will
126     accept concurrently.
127     * add SERVER_ADDR and REQUEST_URI to environment of CGI
128     * handle SIGBUS during writes of data that has been memory mapped
129     * minor optimization in select.c that prevents DEAD requests from
130     being added to the block set
131     * fix bug in CGI environment script_name - closes sf.net bug #576725
132     * make 'status' variable local to requests.c, not local to every file
133     by forgetting to declare 'extern' in globals.h :-|
134     * make getsockname non-fatal, and do it every time because we may
135     need it for the CGI
136     * some minor refactoring optimizations in hash.c
137    
138     ** Changes from 0.94.11 to 0.94.12
139     * Renamed Changelog ChangeLog, and moved up to top-level directory
140     * Next 3 items due in part or whole thanks to
141     Liam Widdowson
142     * when printf'ing a pid type, force to int, because it could be
143     something else on other platforms. Should probably change it to
144     a long, and use that.
145     * backported chroot commandline support from 0.95
146     * backported support for strdup, strstr, alphasort, and scandir
147     from 0.95
148     * Fixed src/Makefile.in -- it didn't remove index_dir.o
149     * backport create_temporary_file from 0.95
150     (instead of using tmpnam)
151     * Allow non-standard date format 31 September 2000 23:59:59 GMT
152     Patch by Landon Curt Noll
153     * Skip whitespace before HTTP/major.minor
154     Adapted patch from Landon Curt Noll
155     * open /dev/null first thing (affects chrooting)
156     * properly handle sigalrm -- use sigalrm_flag and sigalrm_run
157     instead of handling the signal in the signal handler
158     * update manpage slightly
159     * send 400 BAD Request when resource does not start with '/'
160     * add grp.h to boa.h's includes -- remove from boa.c and config.c
161     * removed duplicate header includes from boa.c, config.c, get.c,
162     ip.c, request.c, response.c
163     * factor out creating the server socket and dropping privs
164     into create_server_socket and drop_privs
165     * type all functions in boa.c (except main) as static
166     * set umask after opening /dev/null
167     * tie stdin/stdout to /dev/null before commandline parse
168     * removed old, unused chroot code
169     * move builds_needs_escape earlier in the startup
170     * move fork later in the startup
171     * type all c_set_* as static in config.c
172     * don't bother trying to change uid/gid (or error if the
173     requested uid/gid doesn't exist) if not UID 0
174     * return more appropriate error code when foo.html gives
175     access denied, but foo.html.gz gives some other error
176     (essentially report error associated with foo.html, not foo.html.gz)
177     * send NOT Implemented when an unknown method is attempted
178     * always attempt a 32k read right before close
179     (stopgap until blackhole can be merged)
180     * allow more than 1 space in logline between method, resource,
181     and http version
182     * don't use inline functions
183     * update configure.in so that autoconf 2.50 doesn't complain (as much)
184     * properly use VPATH and srcdir according to autoconf docs
185     * change curly-braces to parentheses in Makefilein
186     * use $^ instead of manually listing the dependencies in Makefile.in
187     * remove tests section in Makefile.in
188     * write tags not TAGS in Makefile.in
189     * Add gethostbyname and inet_aton to function checks
190     * Add code from 0.95 which checks for socket in -lsocket,
191     inet_aton in -lresolv, and gethost{by}name in -lnsl
192     * Also remove broken bc-based "how big is an unsigned int" checks:
193     assume minimum of 32 bits and check in escape.c at runtime.
194     * Added new file: README.chroot.solaris, based on a
195     modified version by Liam Widdowson
196     * Add check_struct_for.m4, which allows us to check a structure
197     for a member (found at http://www.gnu.org/software/ac-archive/
198     authored by Wes Hardaker
199     * Call "aclocal -I ." to rebuild aclocal.m4
200     * Using new check-struct-for-member autoconf macro, check
201     for tm_gmtoff and tm_zone in struct tm -- useful in
202     portability tests for localtime.
203     * Also check sockaddr_in for structure sin_len so we can set
204     it properly.
205     * index_dir.c (which ends up in boa_indexer) can now be compiled
206     with USE_LOCALTIME, and if so, it will report the local time
207     using the timezone name. Otherwise it uses UTC time and UTC
208     timezone designation.
209     * fix buglet in mmap_cache.c which shows up when under
210     heavy load by many different files.
211     Found and squashed by Michal Kara
212     * normalize paths on Aliases, log files, server root, dirmaker
213     This makes sure that paths are 'absolute'
214     * don't generate DOCUMENT_ROOT or SERVER_ROOT,
215     CGIs have no business knowing that information
216     * if CGI, chdir to the cgi's root path
217     Bug found by Matt Callaway
218     * remove ChrootPath and PidFile directives from the parser
219     (they aren't used anyway)
220     * keep track of maximum file descriptor in use to optimize call
221     to select()
222     * apply IPv6 patch from Jari Korva
223     * optimize keep-alive copy data routine
224     * try to use memcpy instead of strcpy/strcat in more places (alias.c)
225     * update .depend file
226     * use fcntl + GET_FL to get a file descriptor's flags, then
227     add or remove only the bits we want to set. This prevents
228     accidentally setting or unsettings bits we don't have anything
229     to do with inadvertantly. (removed, at least temporarily.
230     Show me a system where it is needed -- LRD)
231     * make sure to call FD_ZERO when we handle a restart
232     * in read.c, don't call boa_perror on read failure -- socket is
233     dead or messed up anyway, no reason to try to write to it.
234     * explicit .SUFFIXES in Makefile.in
235     * boa.objdump target added
236     * use @MAKE_SET@ (for when $(MAKE) != "make")
237     * add -Wundef -Wwrite-strings -Wredundant-decls -Winline to GCC_FLAGS
238     * change Paul Phillips' and Larry Doolittle's emails in source
239     * add --disable-debug, --enable-profile, --with-dmalloc, and --with-efence
240     * test for failed-but-return-was-successful setuid:
241     http://www.securityfocus.com/bid/1322
242     * use _exit not exit in CGI child
243     * always place new keepalive request on blocked list, we can't be
244     sure of the state of the active list, and since enqueue places
245     things at the *front* of the list, it doesn't do us much good
246     to place the new request on the active list anyway.
247     * update some Copyright statements for 2002
248     * When comparing the uri to an alias, only compare if
249     the uri length is greater than or equal to the length of the alias
250     * in init_script_alias, make sure to check for document_root before
251     trying to use it
252     * script_name is now just a copy of the request, rather
253     than some complicated variation on the pathname
254     * change the way the CGI environment is handled.
255     Now, it is allocated at request allocation time, and exists
256     throughout the life of the structure.
257     * check memory allocations, etc.. when creating the static
258     CGI environment and when making new CGI environment variables
259     * wait until process_option_end to call unescape_uri, clean_pathname,
260     and translate_uri
261     * remove debian package information
262     * move RedHat packaging information to contrib
263     * remove tests -- they weren't usable anyway
264     * add some new hash routines, and use djb2 (a variant on a
265     hash algorithm popularized by Dan J. Bernstein)
266     * a side-effect of the new hash routines is a bugfix,
267     involving negative return values from hash routines.
268     This has been fixed.
269     * add a routine, show_hash_stats, which is called with other
270     statistical output via sigalarm
271     * remove some duplicate prototypes from config.c
272     * make simple_itoa take an unsigned int
273     * try to make NOBLOCK handling in compat.h compatible with Solaris
274     * make sure to update current_time before calling signal handlers
275     * alter primary loop to make sure that select gets called even
276     when there are requests that are not blocking, and call fdset_update
277     and process_requests (when appropriate) after signal handlers but
278     before select to make sure that blocked requests are still handled
279     by select after a sighup. (Thanks to Karl Olsen)
280     * pull select loop into select.c
281     * poll server socket once per active connection
282     * add send_r_service_unavailable and use it when appropriate
283     * state uptime in seconds at normal program termination
284     * include sys/fcntl.h if it is found by configure
285     * fix POST bug where a content-length < 0 would cause Boa to
286     consume its full share of CPU until killed
287     Bug report by Landon Curt Noll
288     * add CGIPath configuration variable
289     based upon a patch by Landon Curt Noll
290     * add function boa_atoi, which wraps atoi, but does not
291     accept negative values. Additionally, it checks to make sure
292     the converted value and the original value are the same, avoiding
293     issues like "124.3" -> "123" and "123abc" -=> "123".
294     Either a value is an int or it isn't - no middle ground.
295     * use boa_atoi to convert content-length from client.
296     * add new #define - SINGLE_POST_LIMIT_DEFAULT, which defines
297     (in bytes) the *default* single_post_limit.
298     * single_post_limit is now in bytes.
299     * when adding aliases, only "normalize" paths that start
300     with "./" - this is a departure from previous behavior
301     * add "?" to the list of characters that it is safe to leave unescaped
302     * clean up Makefile.in of no-longer-pertinent comments
303     * add send_r_bad_gateway and use it
304     * tie stderr to either cgi_log_fd or devnullfd - either way
305     make sure stderr is a valid filehandle before cgi execution
306     * cgi_env is no longer allocated, it's part of the struct now
307     * fix bug in CgiPath logic
308     * when unable to allocate memory for an environment variable, log it
309     * add clear_common_env, which de-allocates the cgi_common_env stuff
310     [NEVER USE THIS outside of a terminal signal handler!]
311     * don't be so wasteful of memory in normalize_path
312     * adapted fix for alias expansion from Brieuc Jeunhomme
313    
314     ** Changes from 0.94.10.1 to 0.94.11
315     * use LIBS in Makefile.in (which propagates from autoconf)
316     * properly free memory allocated by scandir in index_dir.c
317     * rearrange some header files and includes
318     * on reads and writes, don't check for -1, check for < 0
319     * include fix by William Meadows
320     for escape.c which fixes segfaults due to improper allocation
321     * above fix by William Meadows no longer needed;
322     escape.c and escape.h rewritten by Larry Doolittle -- requires
323     at least 32 bit words, but is correct (jdn's 1st attempt was faulty)
324    
325     ** Changes from 0.94.10 to 0.94.10.1
326     * Actually update the SERVER_VERSION in src/defines.h
327    
328     ** Changes from 0.94.9 to 0.94.10
329     * Fixes escaping rules
330     * Fixes segfault when directory_index is undefined and
331     directory needs to be generated
332     * adds dummy signal handlers for SIGUSR1 and SIGUSR2 (Closes SF #425921)
333     * Update documentation regarding mime.types (Closes Debian #69991)
334     * Make sure documentation builds (Closes Debian #110818)
335    
336     ** Changes from 0.94.8.3 to 0.94.9
337     * src/Makefile.in updated to take CFLAGS, LIBS, and LDFLAGS
338     from autoconf
339     * Update escaping rules with latest RFC
340     * unescape_uri skips fragments and also stop parsing at '?'
341     * Don't accept fd over FD_SETSIZE in request.c:get_request
342     * use backported documentation from 0.95
343     * make sure POST fd gets closed even on client cancel
344     * use backported index_dir.c from 0.95
345     * support subdirectories in ScriptAlias directories
346     * add SinglePostLimit (int, in Kilobytes) to config system
347     * check for ENOSPC on body write
348     * use environment variable TMP (or "/tmp" if not available),
349     and chdir there when boa exits.
350     * add 1-time-only hack to make a 32kB read at the end of a request
351     on POST or PUT
352     * close unused file descriptors (/dev/null in boa.c, and the
353     unused part of the pipes call in cgi.c)
354     * made Makefile.in VPATH happy
355    
356     ** Changes from 0.94.8.2 to 0.94.8.3
357     * Move unescape_uri *before* clean_pathname to prevent
358     encoding of / and .. in pathname
359     * wrap execution of GUNZIP in cgi.c with #ifdef GUNZIP
360     * stop parsing when fragment found in URL ('#')
361    
362     ** Changes from 0.94.8.1 to 0.94.8.2
363     * close pipes[1] in child and generate HTTP_REFERER environment
364     variable in cgi.c
365     * Minor changes to the Debian package
366    
367     ** Changes from 0.94.8 to 0.94.8.1
368     * Change umask call from (umask(0600)) to (umask(~0600))
369    
370     ** Changes from 0.94.7 to 0.94.8
371     * Fix major thinko in temp file permissions
372     * unlink temporary file immediately following creation
373     * implement maximum # of active connections at 10 less than RLIMIT_NOFILE
374     to avoid or eliminate crashes resulting from running out of
375     file descriptors
376     * Fix thinko in POST
377    
378     ** Changes from 0.94.6 to 0.94.7
379     * STDIN and STDOUT are now tied to /dev/null
380     * sets PATH_MAX to 2048 if not defined (for Hurd)
381     * core dumps (should never happen) would be located in /tmp
382     * alter behavior when select gets a EBADF
383     * add translation for the \" char -> &quot;
384     * remove use of sys_errlist. Use perror.
385     * better makedist.sh (still a stupid program though)
386    
387     ** Changes from 0.94.5 to 0.94.6
388     * Removed doc++ commenting
389     * Removed erroneous debugging statments
390     * Move some stuff out of config.c (read_config_file) to boa.c
391     * Altered some of fixup_server_root()
392     * Bug fix in get.c re: automatic gunzip
393     * Added some stubs for chroot code (*not* ready yet)
394    
395     ** Changes from 0.94.4 to 0.94.5
396     * Alteration of most of the comments and such for doc++ use
397     * Fixed buffer overflow in alias.c
398     * Fixed buffer underflow in util.c
399    
400     ** Changes from 0.94.3 to 0.94.4
401     * Better escaping of data to user, both for HTTP headers and HTML body
402     * Proper escaping of output in CGI example perl scripts
403    
404     ** Changes from 0.94.0 to 0.94.2
405     * Fixed obnoxious pipeline bug
406     * Fixed (sorta) a compilation/core bug for *BSD systems
407     Original code by Thomas Neumann
408     * Moved to GPLv2
409     * Changed manpage to section 8
410     * boa.sgml now references a .png file instead of evil .gif
411    
412     ** Changes from 0.93.19.2 to 0.94.0
413     * Added UseGMT to the configuration parser
414     * util.c commonlog now logs in Apache-style commonlog time format
415     * Remove SO_SNDBUF on-start message
416    
417     ** Changes from 0.93.19 to 0.93.19.2
418     * Changed to combined log (from NCSA access_log format) ala Drew Streib
419     * Altered POST cgi code to handle bug in Netscape
420     * SO_SNDBUF changes by Larry
421    
422     ** Changes from 0.93.17.2 to 0.93.19 (all 0.93.18.x changes inclusive)
423     * Update of some copyright statements for 99
424     * Replacement of sprintf with strlen/memcpy or strcpy/strcat
425     wherever possible
426     * Significant rearrangement in alias.c, minor functional differences
427     (some CGI environment variables handled differently)
428     * Removal of die function. Replace with log_err_mesg and exit.
429     * initial IPv6 stubs and support
430     * Move #include "config.h" to top of boa.h where it will do some good
431     * Stubs and functions for strstr and strdup
432     * Seperation of buffer code into it's own file
433     * Significant changes to cgi.c et al (cgi_header.c, etc...)
434     * Speed patches by removal of "extra" calls to time(): Use global variable!
435     * pipelining changes... it works now.
436     * require content-length from clients (ala rfc1945)
437     * alter body_read and body_write to work more efficiently with known content-length
438     * move read(2) part to *after* parsing...
439     * added support for additional header message in send_redirect_temp
440     * change use of NO_ZERO_FILL_LENGTH to offsetof() use
441     * Remove SO_REUSEADDR setting on each client socket, Paul Saab
442     * Avoid SO_SNDBUF setting if possible
443     * Large quantities of otherwise not-insignificant changes
444    
445     ** Changes from 0.93.17.2 to 0.93.17.3
446     * Put on-the-fly directories back in, stripped down from the 0.92 version
447     * Fixed DocumentRoot, ServerAdmin and ServerName null-value handling in
448     CGI environment generation
449     * Fixed argument order in Script* directives (bug introduced in 0.93.17.2)
450     * Got rid of MAX_CGI_VARS because it was not being used consistently, or
451     for that matter, at all, really.
452     * Added some more FASCIST_LOGGING to cgi.c
453     * Minor mmap patch by LRD for request.c
454    
455     ** Changes from 0.93.17.1 to 0.93.17.2
456     * Added "Listen" directive for server bind address, as most recently
457     suggested by David N. Welton
458     * Put virtualhost feature in, was experimental in 0.92q
459    
460     ** Changes from 0.93.16.2 to 0.93.17.1
461     * New config file parser (supposed to be more maintainable) (LRD)
462     * Support for "|command" and ":host:port" syntax for logfiles (untested) (LRD)
463    
464     ** Changes for the 0.93 version **
465     * Huge quantities of changes
466     * keepalive Bugfix in 0.93.16.2 by Jon Nelson
467     report by Craig Silverstein of Google fame.
468     * patch for config.h by Craig Silverstein
469     * fixed "Parent Directory" problem in boa_indexer for title "/"
470     (Debian bug #36165)
471     * More Craig Silverstein
472     modifications, namely:
473     ErrorLog (if omitted, print to stderr)
474     DocumentRoot (if omitted, can only server user-dir files)
475     DirectoryIndex (if omitted, always use DirectoryMaker)
476     MimeTypes (if omitted, don't load -- users can use AddType instead)
477    
478    
479     ** Changes from v0.92o to v0.92p **
480    
481     * Documented misbehavior of CGI, SIGHUP, short aliases, stale dircache.
482     * Documented how to patch signals.c for use on SunOS.
483     * Closed file descriptor leak when redirecting a bare directory URL to
484     one with an appended "/".
485     * Closed potential file descriptor leak if errors encountered generating
486     on-the-fly index.
487     * Cleaned up include file handling to be simultaneously compatible with
488     Linux, SunOS, HP-UX, and AIX.
489     * Supress message body for codes 302, 400, 403, 404, 500, and 501 if
490     incoming request is "HEAD".
491    
492     ** Changes from v0.91 to v0.92o **
493     (0.92o released 27 December, 1996)
494    
495     * Maintenance handover from Paul Phillips to Larry Doolittle
496     * Changed (char)NULL to '\0'
497     * Cleaned up signal handler prototypes in signals.c
498     * Modified handling of CGI environment variable PATH_TRANSLATED,
499     should now work the same as NCSA.
500     * More conservative buffer size in add_cgi_env()
501     * Build argv list for a CGI script according to spec
502     * Speedup process_header_line, eliminate potential memory leak
503     * Occasional spelling fixes and lint removal
504     * Added REMOTE_PORT env var for CGI scripts, to allow easy ident lookups
505     * Changed rfc822 time format
506     * Log timeouts and broken connections
507     * Fix mime suffix handling for filenames with multiple "."s
508     * Initialize conn->time_last, fixes bug with rapid-fire connections
509     * Performance tweak to req_write()
510     * Changed http_version from float to char[8]
511     * Rewrote on-the-fly directory generation; it works now
512     * Added user configurable dircache directory in boa.conf
513     * Fixed "simple" response bugs, including incorrect CGI handling
514     * Keepalive (HTTP/1.1 draft) support, mostly by Jon Nelson
515     * Close data_fd in 304 Not Modified flow of control
516     * Switch socket flags to non-blocking before cgi handoff
517     * Try to handle errno properly in the face of multiple errors
518     * Close fd's of all other transactions before cgi handoff
519     * Move real work for sighup and sigchld out of signal handler
520     * Fix free(req->cgi_env) in request.c
521     * Response message cleanup - better match to HTML-2.0 DTD
522     * Experimental Virtual Host code from Russ Nelson
523     * Expand buffer for escaped URI in init_get()
524     * SIGTERM triggers lame duck mode until all pending transactions complete
525     * Close and unlink temp file for POST in parent process
526    
527     ** Changes from v0.90 to v0.91 **
528    
529     * Cleaned up main while loop
530     * Optimized request line parsing
531     * Added state machine for header reads -- necessary to deal wtih
532     possibility of obtaining header data in multiple reads. This
533     also allows interactive use of server.
534     * Added 500/501 return codes for various conditions
535    
536     ** v0.90 **
537    
538     * Initial release
539    

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