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Revision: 1.3
Committed: Mon Jul 2 18:38:31 2001 UTC (22 years, 11 months ago) by root
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# Content
1 /* config.h - configuration defines for thttpd and libhttpd
2 **
3 ** Copyright © 1995,1998,1999,2000,2001 by Jef Poskanzer <jef@acme.com>.
4 ** All rights reserved.
5 **
6 ** Redistribution and use in source and binary forms, with or without
7 ** modification, are permitted provided that the following conditions
8 ** are met:
9 ** 1. Redistributions of source code must retain the above copyright
10 ** notice, this list of conditions and the following disclaimer.
11 ** 2. Redistributions in binary form must reproduce the above copyright
12 ** notice, this list of conditions and the following disclaimer in the
13 ** documentation and/or other materials provided with the distribution.
14 **
15 ** THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 ** ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 ** IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 ** ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 ** FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 ** DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 ** OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 ** HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 ** LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 ** OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 ** SUCH DAMAGE.
26 */
27
28 #ifndef _CONFIG_H_
29 #define _CONFIG_H_
30
31
32 /* The following configuration settings are sorted in order of decreasing
33 ** likelihood that you'd want to change them - most likely first, least
34 ** likely last.
35 **
36 ** In case you're not familiar with the convention, "#ifdef notdef"
37 ** is a Berkeleyism used to indicate temporarily disabled code.
38 ** The idea here is that you re-enable it by just moving it outside
39 ** of the ifdef.
40 */
41
42 /* CONFIGURE: CGI programs must match this pattern to get executed. It's
43 ** a simple shell-style wildcard pattern, with * meaning any string not
44 ** containing a slash, ** meaning any string at all, and ? meaning any
45 ** single character; or multiple such patterns separated by |. The
46 ** patterns get checked against the filename part of the incoming URL.
47 **
48 ** Restricting CGI programs to a single directory lets the site administrator
49 ** review them for security holes, and is strongly recommended. If there
50 ** are individual users that you trust, you can enable their directories too.
51 **
52 ** You can also specify a CGI pattern on the command line, with the -c flag.
53 ** Such a pattern overrides this compiled-in default.
54 **
55 ** If no CGI pattern is specified, neither here nor on the command line,
56 ** then CGI programs cannot be run at all. If you want to disable CGI
57 ** as a security measure that's how you do it, just don't define any
58 ** pattern here and don't run with the -c flag.
59 */
60 #ifdef notdef
61 /* Some sample patterns. Allow programs only in one central directory: */
62 #define CGI_PATTERN "/cgi-bin/*"
63 /* Allow programs in a central directory, or anywhere in a trusted
64 ** user's tree: */
65 #define CGI_PATTERN "/cgi-bin/*|/jef/**"
66 /* Allow any program ending with a .cgi: */
67 #define CGI_PATTERN "**.cgi"
68 /* When virtual hosting, enable the central directory on every host: */
69 #define CGI_PATTERN "/*/cgi-bin/*"
70 #endif
71
72 /* CONFIGURE: How many seconds to allow CGI programs to run before killing
73 ** them. This is in case someone writes a CGI program that goes into an
74 ** infinite loop, or does a massive database lookup that would take hours,
75 ** or whatever. If you don't want any limit, comment this out, but that's
76 ** probably a really bad idea.
77 */
78 #define CGI_TIMELIMIT 60
79
80 /* CONFIGURE: How many seconds to allow for reading the initial request
81 ** on a new connection.
82 */
83 #define IDLE_READ_TIMELIMIT 30
84
85 /* CONFIGURE: How many seconds before an idle connection gets closed.
86 */
87 #define IDLE_SEND_TIMELIMIT 300
88
89 /* CONFIGURE: The syslog facility to use. Using this you can set up your
90 ** syslog.conf so that all thttpd messages go into a separate file. Note
91 ** that even if you use the -l command line flag to send logging to a
92 ** file, errors still get sent via syslog.
93 */
94 #define LOG_FACILITY LOG_DAEMON
95
96 /* CONFIGURE: Tilde mapping. Many URLs use ~username to indicate a
97 ** user's home directory. thttpd provides two options for mapping
98 ** this construct to an actual filename.
99 **
100 ** 1) Map ~username to <prefix>/username. This is the recommended choice.
101 ** Each user gets a subdirectory in the main chrootable web tree, and
102 ** the tilde construct points there. The prefix could be something
103 ** like "users", or it could be empty. See also the makeweb program
104 ** for letting users create their own web subdirectories.
105 **
106 ** 2) Map ~username to <user's homedir>/<postfix>. The postfix would be
107 ** the name of a subdirectory off of the user's actual home dir, something
108 ** like "public_html". This is what Apache and other servers do. The problem
109 ** is, you can't do this and chroot() at the same time, so it's inherently
110 ** a security hole. This is strongly dis-recommended, but it's here because
111 ** some people really want it. Use at your own risk.
112 **
113 ** You can also leave both options undefined, and thttpd will not do
114 ** anything special about tildes. Enabling both options is an error.
115 */
116 #ifdef notdef
117 #define TILDE_MAP_1 "users"
118 #define TILDE_MAP_2 "public_html"
119 #endif
120
121 /* CONFIGURE: The file to use for authentication. If this is defined then
122 ** thttpd checks for this file in the local directory before every fetch.
123 ** If the file exists then authentication is done, otherwise the fetch
124 ** proceeds as usual.
125 **
126 ** If you undefine this then thttpd will not implement authentication
127 ** at all and will not check for auth files, which saves a bit of CPU time.
128 */
129 #define AUTH_FILE ".htpasswd"
130
131 /* CONFIGURE: The default character set name to use with text MIME types.
132 ** This gets substituted into the MIME types where they have a "%s".
133 **
134 ** You can override this in the config file with the "charset" setting,
135 ** or on the command like with the -T flag.
136 */
137 #define DEFAULT_CHARSET "iso-8859-1"
138
139
140 /* Most people won't want to change anything below here. */
141
142 /* CONFIGURE: This controls the SERVER_NAME environment variable that gets
143 ** passed to CGI programs. By default thttpd does a gethostname(), which
144 ** gives the host's canonical name. If you want to always use some other name
145 ** you can define it here.
146 **
147 ** Alternately, if you want to run the same thttpd binary on multiple
148 ** machines, and want to build in alternate names for some or all of
149 ** them, you can define a list of canonical name to altername name
150 ** mappings. thttpd seatches the list and when it finds a match on
151 ** the canonical name, that alternate name gets used. If no match
152 ** is found, the canonical name gets used.
153 **
154 ** If both SERVER_NAME and SERVER_NAME_LIST are defined here, thttpd searches
155 ** the list as above, and if no match is found then SERVER_NAME gets used.
156 **
157 ** In any case, if thttpd is started with the -h flag, that name always
158 ** gets used.
159 */
160 #ifdef notdef
161 #define SERVER_NAME "your.hostname.here"
162 #define SERVER_NAME_LIST \
163 "canonical.name.here/alternate.name.here", \
164 "canonical.name.two/alternate.name.two"
165 #endif
166
167 /* CONFIGURE: Undefine this if you want thttpd to hide its specific version
168 ** when returning into to browsers. Instead it'll just say "thttpd" with
169 ** no version.
170 */
171 #define SHOW_SERVER_VERSION
172
173 /* CONFIGURE: Define this if you want to always chroot(), without having
174 ** to give the -r command line flag. Some people like this as a security
175 ** measure, to prevent inadvertant exposure by accidentally running without -r.
176 ** You can still disable it at runtime with the -nor flag.
177 */
178 #ifdef notdef
179 #define ALWAYS_CHROOT
180 #endif
181
182 /* CONFIGURE: Define this if you want to always do virtual hosting, without
183 ** having to give the -v command line flag. You can still disable it at
184 ** runtime with the -nov flag.
185 */
186 #ifdef notdef
187 #define ALWAYS_VHOST
188 #endif
189
190 /* CONFIGURE: If you're using the vhost feature and you have a LOT of
191 ** virtual hostnames (like, hundreds or thousands), you will want to
192 ** enable this feature. It avoids a problem with most Unix filesystems,
193 ** where if there are a whole lot of items in a directory then name lookup
194 ** becomes very slow. This feature makes thttpd use subdirectories
195 ** based on the first characters of each hostname. You can set it to use
196 ** from one to three characters. If the hostname starts with "www.", that
197 ** part is skipped over. Dots are also skipped over, and if the name isn't
198 ** long enough then "_"s are used. Here are some examples of how hostnames
199 ** would get turned into directory paths, for each different setting:
200 ** 1: www.acme.com -> a/www.acme.com
201 ** 1: foobar.acme.com -> f/foobar.acme.com
202 ** 2: www.acme.com -> a/c/www.acme.com
203 ** 2: foobar.acme.com -> f/o/foobar.acme.com
204 ** 3: www.acme.com -> a/c/m/www.acme.com
205 ** 3: foobar.acme.com -> f/o/o/foobar.acme.com
206 ** 3: m.tv -> m/t/v/m.tv
207 ** 4: m.tv -> m/t/v/_/m.tv
208 ** Note that if you compile this setting in but then forget to set up
209 ** the corresponding subdirectories, the only error indication you'll
210 ** get is a "404 Not Found" when you try to visit a site. So be careful.
211 */
212 #ifdef notdef
213 #define VHOST_DIRLEVELS 1
214 #define VHOST_DIRLEVELS 2
215 #define VHOST_DIRLEVELS 3
216 #endif
217
218 /* CONFIGURE: Define this if you want to always use a global passwd file,
219 ** without having to give the -P command line flag. You can still disable
220 ** it at runtime with the -noP flag.
221 */
222 #ifdef notdef
223 #define ALWAYS_GLOBAL_PASSWD
224 #endif
225
226 /* CONFIGURE: When started as root, the default username to switch to after
227 ** initializing. If this user (or the one specified by the -u flag) does
228 ** not exist, the program will refuse to run.
229 */
230 #define DEFAULT_USER "nobody"
231
232 /* CONFIGURE: When started as root, the program can automatically chdir()
233 ** to the home directory of the user specified by -u or DEFAULT_USER.
234 ** An explicit -d still overrides this.
235 */
236 #ifdef notdef
237 #define USE_USER_DIR
238 #endif
239
240 /* CONFIGURE: If this is defined, some of the built-in error pages will
241 ** have more explicit information about exactly what the problem is.
242 ** Some sysadmins don't like this, for security reasons.
243 */
244 #define EXPLICIT_ERROR_PAGES
245
246 /* CONFIGURE: Subdirectory for custom error pages. The error filenames are
247 ** $WEBDIR/$ERR_DIR/err%d.html - if virtual hosting is enabled then
248 ** $WEBDIR/hostname/$ERR_DIR/err%d.html is searched first. This allows
249 ** different custom error pages for each virtual hosting web server. If
250 ** no custom page for a given error can be found, the built-in error page
251 ** is generated. If ERR_DIR is not defined at all, only the built-in error
252 ** pages will be generated.
253 */
254 #define ERR_DIR "errors"
255
256 /* CONFIGURE: Define this if you want a standard HTML tail containing
257 ** $SERVER_SOFTWARE and $SERVER_ADDRESS to be appended to the custom error
258 ** pages. (It is always appended to the built-in error pages.)
259 */
260 #define ERR_APPEND_SERVER_INFO
261
262 /* CONFIGURE: nice(2) value to use for CGI programs. If this is undefined,
263 ** CGI programs run at normal priority.
264 */
265 /*#define CGI_NICE 10*/
266
267 /* CONFIGURE: $PATH to use for CGI programs.
268 */
269 #define CGI_PATH "/usr/local/bin:/usr/ucb:/bin:/usr/bin"
270
271 /* CONFIGURE: If defined, $LD_LIBRARY_PATH to use for CGI programs.
272 */
273 #ifdef notdef
274 #define CGI_LD_LIBRARY_PATH "/usr/local/lib:/usr/lib"
275 #endif
276
277 /* CONFIGURE: How often to run the occasional cleanup job.
278 */
279 #define OCCASIONAL_TIME 300
280
281 /* CONFIGURE: Seconds between stats syslogs. If this is undefined then
282 ** no stats are accumulated and no stats syslogs are done.
283 */
284 #define STATS_TIME 3600
285
286 /* CONFIGURE: The mmap cache tries to keep the total number of mapped
287 ** files below this number, so you don't run out of kernel file descriptors.
288 ** If you have reconfigured your kernel to have more descriptors, you can
289 ** raise this and thttpd will keep more maps cached. However it's not
290 ** a hard limit, thttpd will go over it if you really are accessing
291 ** a whole lot of files.
292 */
293 #define DESIRED_MAX_MAPPED_FILES 2000
294
295 /* CONFIGURE: Minimum and maximum intervals between child-process reaping,
296 ** in seconds.
297 */
298 #define MIN_REAP_TIME 30
299 #define MAX_REAP_TIME 900
300
301
302 /* You almost certainly don't want to change anything below here. */
303
304 /* CONFIGURE: When throttling CGI programs, we don't know how many bytes
305 ** they send back to the client because it would be inefficient to
306 ** interpose a counter. CGI programs are much more expensive than
307 ** regular files to serve, so we set an arbitrary and high byte count
308 ** that gets applied to all CGI programs for throttling purposes.
309 */
310 #define CGI_BYTECOUNT 50000
311
312 /* CONFIGURE: The default port to listen on. 80 is the standard HTTP port.
313 */
314 #define DEFAULT_PORT 80
315
316 /* CONFIGURE: A list of index filenames to check. The files are searched
317 ** for in this order.
318 */
319 #define INDEX_NAMES "index.html", "index.cgi"
320
321 /* CONFIGURE: If this is defined then thttpd will automatically generate
322 ** index pages for directories that don't have an explicit index file.
323 ** If you want to disable this behavior site-wide, perhaps for security
324 ** reasons, just undefine this. Note that you can disable indexing of
325 ** individual directories by merely doing a "chmod 711" on them - the
326 ** standard Unix file permission to allow file access but disable "ls".
327 */
328 #define GENERATE_INDEXES
329
330 /* CONFIGURE: Whether to log unknown request headers. Most sites will not
331 ** want to log them, which will save them a bit of CPU time.
332 */
333 #ifdef notdef
334 #define LOG_UNKNOWN_HEADERS
335 #endif
336
337 /* CONFIGURE: Time between updates of the throttle table's rolling averages. */
338 #define THROTTLE_TIME 60
339
340 /* CONFIGURE: Time until a blocked host can access the server again. */
341 #define DEFAULT_BLOCKTIME 3600
342
343 /* CONFIGURE: Maximum numbers of hosts that get blocked. */
344 #define BLOCKLIST_LENGTH 200
345
346 /* CONFIGURE: The listen() backlog queue length. The 1024 doesn't actually
347 ** get used, the kernel uses its maximum allowed value. This is a config
348 ** parameter only in case there's some OS where asking for too high a queue
349 ** length causes an error. Note that on many systems the maximum length is
350 ** way too small - see http://www.acme.com/software/thttpd/notes.html
351 */
352 #define LISTEN_BACKLOG 1024
353
354 /* CONFIGURE: Maximum number of throttle patterns that any single URL can
355 ** be included in. This has nothing to do with the number of throttle
356 ** patterns that you can define, which is unlimited.
357 */
358 #define MAXTHROTTLENUMS 10
359
360 /* CONFIGURE: Number of file descriptors to reserve for uses other than
361 ** connections. Currently this is 10, representing one for the listen fd,
362 ** one for dup()ing at connection startup time, one for reading the file,
363 ** one for syslog, and possibly one for the regular log file, which is
364 ** five, plus a factor of two for who knows what.
365 */
366 #define SPARE_FDS 10
367
368 /* CONFIGURE: How many seconds to leave a connection open while doing a
369 ** lingering close.
370 */
371 #define LINGER_TIME 2
372
373 /* CONFIGURE: Maximum number of symbolic links to follow before
374 ** assuming there's a loop.
375 */
376 #define MAX_LINKS 32
377
378 /* CONFIGURE: You don't even want to know.
379 */
380 #define MIN_WOULDBLOCK_DELAY 100L
381
382 /* CONFIGURE: Maximum filesize to serve using mmap
383 */
384 #define MMAP_MAX (1024L*1024*8)
385
386 /* CONFIGURE: The size of the bounce-buffer when not using mmap
387 */
388 #define WRITE_BUFFER 4096
389
390 #endif /* _CONFIG_H_ */