1 /* $NetBSD: main.c,v 1.31 2023/06/07 20:12:31 mrg Exp $ */
2
3 /* $eterna: main.c,v 1.6 2011/11/18 09:21:15 mrg Exp $ */
4 /* from: eterna: bozohttpd.c,v 1.159 2009/05/23 02:14:30 mrg Exp */
5
6 /*
7 * Copyright (c) 1997-2023 Matthew R. Green
8 * All rights reserved.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer and
17 * dedication in the documentation and/or other materials provided
18 * with the distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
25 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
26 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
27 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
28 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 */
33
34 /* this program is dedicated to the Great God of Processed Cheese */
35
36 /*
37 * main.c: C front end to bozohttpd
38 */
39
40 #include <sys/types.h>
41 #include <sys/param.h>
42
43 #include <errno.h>
44 #include <stdlib.h>
45 #include <string.h>
46 #include <syslog.h>
47 #include <time.h>
48 #include <unistd.h>
49
50 #include "bozohttpd.h"
51
52 /* variables and functions */
53 #ifndef LOG_FTP
54 #define LOG_FTP LOG_DAEMON
55 #endif
56
57 /* print a usage message, and then exit */
58 BOZO_DEAD static void
usage(bozohttpd_t * httpd,char * progname)59 usage(bozohttpd_t *httpd, char *progname)
60 {
61 bozowarn(httpd, "usage: %s [options] slashdir [virtualhostname]",
62 progname);
63 bozowarn(httpd, "options:");
64
65 if (have_daemon_mode)
66 bozowarn(httpd, " -b\t\t\tbackground in daemon mode");
67 if (have_cgibin &&
68 have_dynamic_content)
69 bozowarn(httpd, " -C suffix handler\tadd this CGI handler "
70 "for paths ending with `suffix'");
71 if (have_cgibin)
72 bozowarn(httpd, " -c cgibin\t\tenable cgi-bin support in "
73 "this directory");
74 if (have_debug)
75 bozowarn(httpd, " -d\t\t\tenable debug support");
76 if (have_user &&
77 have_cgibin)
78 bozowarn(httpd, " -E\t\t\tenable CGI support for user dirs");
79 if (have_core)
80 bozowarn(httpd, " -e\t\t\tdon't clean the environment "
81 "(-t and -U only)");
82 if (have_daemon_mode)
83 bozowarn(httpd, " -f\t\t\tforeground in daemon mode");
84 if (have_core)
85 bozowarn(httpd, " -G\t\t\tprint version number and exit");
86 if (have_dirindex)
87 bozowarn(httpd, " -H\t\t\thide files starting with a period "
88 "(.) in index mode");
89 if (have_core)
90 bozowarn(httpd, " -I port\t\tbind or use on this port");
91 if (have_daemon_mode)
92 bozowarn(httpd, " -i address\t\tbind on this address "
93 "(daemon mode only)");
94 if (have_lua)
95 bozowarn(httpd, " -L prefix script\tadd this Lua script for "
96 "paths starting with `prefix'");
97 if (have_dynamic_content)
98 bozowarn(httpd, " -M suffix t c c11\tadd this mime entry");
99 if (have_core)
100 bozowarn(httpd, " -n\t\t\tdon't resolve host names");
101 if (have_daemon_mode)
102 bozowarn(httpd, " -P pidfile\t\tpid file path");
103 if (have_user)
104 bozowarn(httpd, " -p dir\t\t\"public_html\" directory name");
105 if (have_core)
106 bozowarn(httpd, " -q\t\tquiet mode, no logging");
107 if (have_dirindex)
108 bozowarn(httpd, " -R readme\t\tput readme file in footer "
109 "of directory index");
110 if (have_core) {
111 bozowarn(httpd, " -S version\t\tset server version string");
112 bozowarn(httpd, " -s\t\t\talways log to stderr");
113 bozowarn(httpd, " -T type timeout\t"
114 "set <ssl|initial|header|request> timeout");
115 bozowarn(httpd, " -t dir\t\tchroot to `dir'");
116 bozowarn(httpd, " -U user\t\tchange user to `user'");
117 }
118 if (have_user)
119 bozowarn(httpd, " -u\t\t\tenable ~user/public_html support");
120 if (have_core) {
121 bozowarn(httpd, " -V\t\t\tUnknown virtual hosts go to "
122 "`slashdir'");
123 bozowarn(httpd, " -v virtualroot\tenable virtual host "
124 "support in this directory");
125 }
126 if (have_dirindex)
127 bozowarn(httpd, " -X\t\t\tdirectory index support");
128 if (have_core)
129 bozowarn(httpd, " -x index\t\tdefault \"index.html\" "
130 "file name");
131 if (have_ssl) {
132 bozowarn(httpd, " -Z cert privkey\tspecify path to server "
133 "certificate and private key file\n"
134 "\t\t\tin pem format and enable bozohttpd in "
135 "SSL mode");
136 bozowarn(httpd, " -z ciphers\t\tspecify SSL ciphers");
137 }
138
139 bozoerr(httpd, 1, "%s failed to start", progname);
140 }
141
142 int
main(int argc,char ** argv)143 main(int argc, char **argv)
144 {
145 bozo_httpreq_t *request;
146 bozohttpd_t httpd;
147 bozoprefs_t prefs;
148 char *progname;
149 const char *val;
150 int c;
151
152 (void) memset(&httpd, 0x0, sizeof(httpd));
153 (void) memset(&prefs, 0x0, sizeof(prefs));
154
155 if ((progname = strrchr(argv[0], '/')) == NULL)
156 progname = argv[0];
157 else
158 progname++;
159
160 openlog(progname, LOG_PID|LOG_NDELAY, LOG_FTP);
161
162 bozo_set_defaults(&httpd, &prefs);
163
164 /*
165 * -r option was removed, do not reuse it for a while
166 */
167
168 while ((c = getopt(argc, argv,
169 "C:EGHI:L:M:m:P:R:S:T:U:VXZ:bc:defhi:np:qst:uv:x:z:")) != -1) {
170 switch (c) {
171
172 case 'b':
173 if (!have_daemon_mode)
174 no_daemon_mode:
175 bozoerr(&httpd, 1, "Daemon mode not enabled");
176
177 /*
178 * test suite support - undocumented
179 * background == 2 (aka, -b -b) means to
180 * only process 1 per kid
181 */
182 val = bozo_get_pref(&prefs, "background") == NULL ?
183 "1" : "2";
184 bozo_set_pref(&httpd, &prefs, "background", val);
185 break;
186
187 case 'C':
188 if (!have_dynamic_content ||
189 !have_cgibin)
190 bozoerr(&httpd, 1,
191 "dynamic CGI handler support not enabled");
192
193 /* make sure there's two arguments */
194 if (argc - optind < 1)
195 usage(&httpd, progname);
196 bozo_add_content_map_cgi(&httpd, optarg,
197 argv[optind++]);
198 break;
199
200 case 'c':
201 if (!have_cgibin)
202 bozoerr(&httpd, 1, "CGI not enabled");
203
204 bozo_cgi_setbin(&httpd, optarg);
205 break;
206
207 case 'd':
208 if (!have_debug)
209 bozowarn(&httpd, "Debugging not enabled");
210 httpd.debug++;
211 break;
212
213 case 'E':
214 if (!have_user ||
215 !have_cgibin)
216 bozoerr(&httpd, 1, "CGI not enabled");
217
218 bozo_set_pref(&httpd, &prefs, "enable user cgibin",
219 "true");
220 break;
221
222 case 'e':
223 bozo_set_pref(&httpd, &prefs, "dirty environment",
224 "true");
225 break;
226
227 case 'f':
228 if (!have_daemon_mode)
229 goto no_daemon_mode;
230
231 bozo_set_pref(&httpd, &prefs, "foreground", "true");
232 break;
233
234 case 'G':
235 {
236 char version[128];
237
238 bozo_get_version(version, sizeof(version));
239 printf("bozohttpd version %s\n", version);
240 }
241 return 0;
242
243 case 'H':
244 if (!have_dirindex)
245 no_dirindex_support:
246 bozoerr(&httpd, 1,
247 "directory indexing not enabled");
248
249 bozo_set_pref(&httpd, &prefs, "hide dots", "true");
250 break;
251
252 case 'I':
253 bozo_set_pref(&httpd, &prefs, "port number", optarg);
254 break;
255
256 case 'i':
257 if (!have_daemon_mode)
258 goto no_daemon_mode;
259
260 bozo_set_pref(&httpd, &prefs, "bind address", optarg);
261 break;
262
263 case 'L':
264 if (!have_lua)
265 bozoerr(&httpd, 1, "Lua support not enabled");
266
267 /* make sure there's two argument */
268 if (argc - optind < 1)
269 usage(&httpd, progname);
270 bozo_add_lua_map(&httpd, optarg, argv[optind]);
271 optind++;
272 break;
273
274 case 'M':
275 if (!have_dynamic_content)
276 bozoerr(&httpd, 1,
277 "dynamic mime content support not enabled");
278
279 /* make sure there're four arguments */
280 if (argc - optind < 3)
281 usage(&httpd, progname);
282 bozo_add_content_map_mime(&httpd, optarg, argv[optind],
283 argv[optind+1], argv[optind+2]);
284 optind += 3;
285 break;
286
287 case 'm':
288 if (!have_ssl)
289 goto no_ssl;
290
291 httpd.ssl_min_proto = optarg;
292 debug((&httpd, DEBUG_NORMAL,
293 "using minimum protocol version: %s", optarg));
294 break;
295
296 case 'n':
297 bozo_set_pref(&httpd, &prefs, "numeric", "true");
298 break;
299
300 case 'P':
301 if (!have_daemon_mode)
302 goto no_daemon_mode;
303
304 bozo_set_pref(&httpd, &prefs, "pid file", optarg);
305 break;
306
307 case 'p':
308 if (!have_user)
309 no_user_support:
310 bozoerr(&httpd, 1, "User support not enabled");
311
312 bozo_set_pref(&httpd, &prefs, "public_html", optarg);
313 break;
314
315 case 'q':
316 bozo_set_pref(&httpd, &prefs, "no log", "true");
317 break;
318
319 case 'R':
320 if (!have_dirindex)
321 goto no_dirindex_support;
322
323 bozo_set_pref(&httpd, &prefs, "directory index readme",
324 optarg);
325 break;
326
327 case 'S':
328 bozo_set_pref(&httpd, &prefs, "server software",
329 optarg);
330 break;
331
332 case 's':
333 bozo_set_pref(&httpd, &prefs, "log to stderr", "true");
334 break;
335
336 case 'T':
337 /* make sure there're two arguments */
338 if (argc - optind < 1)
339 usage(&httpd, progname);
340 if (bozo_set_timeout(&httpd, &prefs,
341 optarg, argv[optind])) {
342 bozoerr(&httpd, 1,
343 "invalid type '%s'", optarg);
344 /* NOTREACHED */
345 }
346 optind++;
347 break;
348
349 case 't':
350 bozo_set_pref(&httpd, &prefs, "chroot dir", optarg);
351 break;
352
353 case 'U':
354 bozo_set_pref(&httpd, &prefs, "username", optarg);
355 break;
356
357 case 'u':
358 if (!have_user)
359 goto no_user_support;
360
361 bozo_set_pref(&httpd, &prefs, "enable users", "true");
362 break;
363
364 case 'V':
365 bozo_set_pref(&httpd, &prefs, "unknown slash", "true");
366 break;
367
368 case 'v':
369 bozo_set_pref(&httpd, &prefs, "virtual base", optarg);
370 break;
371
372 case 'X':
373 if (!have_dirindex)
374 goto no_dirindex_support;
375
376 bozo_set_pref(&httpd, &prefs, "directory indexing",
377 "true");
378 break;
379
380 case 'x':
381 bozo_set_pref(&httpd, &prefs, "index.html", optarg);
382 break;
383
384 case 'Z':
385 if (!have_ssl)
386 no_ssl:
387 bozoerr(&httpd, 1, "ssl support not enabled");
388
389 /* make sure there's two arguments */
390 if (argc - optind < 1)
391 usage(&httpd, progname);
392 bozo_ssl_set_opts(&httpd, optarg, argv[optind++]);
393 break;
394
395 case 'z':
396 if (!have_ssl)
397 goto no_ssl;
398
399 bozo_ssl_set_ciphers(&httpd, optarg);
400 break;
401
402 default:
403 usage(&httpd, progname);
404 /* NOTREACHED */
405 }
406 }
407
408 argc -= optind;
409 argv += optind;
410
411 if (argc == 0 || argc > 2) {
412 usage(&httpd, progname);
413 }
414
415 /* virtual host, and root of tree to serve */
416 bozo_setup(&httpd, &prefs, argv[1], argv[0]);
417
418 /*
419 * read and process the HTTP request.
420 */
421 do {
422 if ((request = bozo_read_request(&httpd)) != NULL) {
423 bozo_process_request(request);
424 bozo_clean_request(request);
425 }
426 } while (httpd.background);
427
428 bozo_cleanup(&httpd, &prefs);
429
430 return (0);
431 }
432