Commit | Line | Data |
---|---|---|
f89ce57a FT |
1 | /* |
2 | ashd - A Sane HTTP Daemon | |
3 | Copyright (C) 2008 Fredrik Tolf <fredrik@dolda2000.com> | |
4 | ||
5 | This program is free software: you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License as published by | |
7 | the Free Software Foundation, either version 3 of the License, or | |
8 | (at your option) any later version. | |
9 | ||
10 | This program is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
16 | along with this program. If not, see <http://www.gnu.org/licenses/>. | |
17 | */ | |
18 | ||
19 | /* | |
20 | * XXX: All the various ways to start a child process makes this | |
21 | * program quite ugly at the moment. It is unclear whether it is | |
22 | * meaningfully possible to unify them better than they currently are. | |
23 | */ | |
24 | ||
25 | #include <stdlib.h> | |
26 | #include <stdio.h> | |
27 | #include <unistd.h> | |
28 | #include <string.h> | |
29 | #include <fcntl.h> | |
30 | #include <ctype.h> | |
31 | #include <sys/socket.h> | |
32 | #include <sys/un.h> | |
33 | #include <netinet/in.h> | |
34 | #include <netdb.h> | |
cc5adcf9 | 35 | #include <signal.h> |
f89ce57a FT |
36 | #include <errno.h> |
37 | ||
38 | #ifdef HAVE_CONFIG_H | |
39 | #include <config.h> | |
40 | #endif | |
41 | #include <utils.h> | |
42 | #include <req.h> | |
62e76c42 | 43 | #include <resp.h> |
f89ce57a FT |
44 | #include <log.h> |
45 | #include <mt.h> | |
46 | #include <mtio.h> | |
47 | ||
48 | static char **progspec; | |
49 | static char *sockid, *unspec, *inspec; | |
50 | static int nolisten; | |
51 | static struct sockaddr *curaddr; | |
52 | static size_t caddrlen; | |
53 | static int cafamily, isanon; | |
54 | static pid_t child; | |
55 | ||
56 | static struct addrinfo *resolv(int flags) | |
57 | { | |
58 | int ret; | |
59 | struct addrinfo *ai, h; | |
60 | char *name, *srv, *p; | |
61 | ||
62 | if((p = strchr(inspec, ':')) != NULL) { | |
63 | name = smalloc(p - inspec + 1); | |
64 | memcpy(name, inspec, p - inspec); | |
65 | name[p - inspec] = 0; | |
66 | srv = p + 1; | |
67 | } else { | |
68 | name = sstrdup("localhost"); | |
69 | srv = inspec; | |
70 | } | |
71 | memset(&h, 0, sizeof(h)); | |
72 | h.ai_family = AF_UNSPEC; | |
73 | h.ai_socktype = SOCK_STREAM; | |
74 | h.ai_flags = flags; | |
75 | ret = getaddrinfo(name, srv, &h, &ai); | |
76 | free(name); | |
77 | if(ret != 0) { | |
78 | flog(LOG_ERR, "could not resolve TCP specification `%s': %s", inspec, gai_strerror(ret)); | |
79 | exit(1); | |
80 | } | |
81 | return(ai); | |
82 | } | |
83 | ||
84 | static char *mksockid(char *sockid) | |
85 | { | |
86 | char *home; | |
87 | ||
88 | home = getenv("HOME"); | |
89 | if(home && !access(sprintf3("%s/.ashd/sockets/", home), X_OK)) | |
90 | return(sprintf3("%s/.ashd/sockets/scgi-p-%s", home, sockid)); | |
91 | return(sprintf3("/tmp/scgi-%i-%s", getuid(), sockid)); | |
92 | } | |
93 | ||
94 | static char *mkanonid(void) | |
95 | { | |
96 | char *home; | |
97 | char *tmpl; | |
98 | int fd; | |
99 | ||
100 | home = getenv("HOME"); | |
101 | if(home && !access(sprintf3("%s/.ashd/sockets/", home), X_OK)) | |
1376c0cd | 102 | tmpl = sprintf2("%s/.ashd/sockets/scgi-a-XXXXXX", home); |
f89ce57a FT |
103 | else |
104 | tmpl = sprintf2("/tmp/scgi-a-%i-XXXXXX", getuid()); | |
105 | if((fd = mkstemp(tmpl)) < 0) { | |
106 | flog(LOG_ERR, "could not create anonymous socket `%s': %s", tmpl, strerror(errno)); | |
107 | exit(1); | |
108 | } | |
1376c0cd | 109 | close(fd); |
f89ce57a FT |
110 | unlink(tmpl); |
111 | return(tmpl); | |
112 | } | |
113 | ||
114 | static void startlisten(void) | |
115 | { | |
116 | int i, fd; | |
117 | struct addrinfo *ai, *cai; | |
118 | char *unpath; | |
119 | struct sockaddr_un unm; | |
120 | char *aname; | |
121 | ||
122 | isanon = 0; | |
123 | if(inspec != NULL) { | |
124 | fd = -1; | |
125 | for(cai = ai = resolv(AI_PASSIVE); cai != NULL; cai = cai->ai_next) { | |
126 | if((fd = socket(cai->ai_family, cai->ai_socktype, cai->ai_protocol)) < 0) | |
127 | continue; | |
128 | if(bind(fd, cai->ai_addr, cai->ai_addrlen)) { | |
129 | close(fd); | |
130 | fd = -1; | |
131 | continue; | |
132 | } | |
133 | if(listen(fd, 128)) { | |
134 | close(fd); | |
135 | fd = -1; | |
136 | continue; | |
137 | } | |
138 | break; | |
139 | } | |
140 | freeaddrinfo(ai); | |
141 | if(fd < 0) { | |
142 | flog(LOG_ERR, "could not bind to specified TCP address: %s", strerror(errno)); | |
143 | exit(1); | |
144 | } | |
145 | } else if((unspec != NULL) || (sockid != NULL)) { | |
146 | if((fd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) { | |
147 | flog(LOG_ERR, "could not create Unix socket: %s", strerror(errno)); | |
148 | exit(1); | |
149 | } | |
150 | if(unspec != NULL) | |
151 | unpath = unspec; | |
152 | else | |
153 | unpath = mksockid(sockid); | |
154 | unlink(unpath); | |
155 | unm.sun_family = AF_UNIX; | |
156 | strcpy(unm.sun_path, unpath); | |
157 | if(bind(fd, (struct sockaddr *)&unm, sizeof(unm))) { | |
158 | flog(LOG_ERR, "could not bind Unix socket to `%s': %s", unspec, strerror(errno)); | |
159 | exit(1); | |
160 | } | |
161 | if(listen(fd, 128)) { | |
162 | flog(LOG_ERR, "listen: %s", strerror(errno)); | |
163 | exit(1); | |
164 | } | |
165 | } else { | |
166 | if((fd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) { | |
167 | flog(LOG_ERR, "could not create Unix socket: %s", strerror(errno)); | |
168 | exit(1); | |
169 | } | |
170 | memset(&unm, 0, sizeof(unm)); | |
171 | aname = mkanonid(); | |
172 | unm.sun_family = AF_UNIX; | |
173 | strcpy(unm.sun_path, aname); | |
174 | free(aname); | |
175 | if(bind(fd, (struct sockaddr *)&unm, sizeof(unm))) { | |
176 | flog(LOG_ERR, "could not bind Unix socket to `%s': %s", unspec, strerror(errno)); | |
177 | exit(1); | |
178 | } | |
179 | if(listen(fd, 128)) { | |
180 | flog(LOG_ERR, "listen: %s", strerror(errno)); | |
181 | exit(1); | |
182 | } | |
183 | ||
184 | curaddr = smalloc(caddrlen = sizeof(unm)); | |
185 | memcpy(curaddr, &unm, sizeof(unm)); | |
186 | cafamily = AF_UNIX; | |
187 | isanon = 1; | |
188 | } | |
189 | if((child = fork()) < 0) { | |
190 | flog(LOG_ERR, "could not fork: %s", strerror(errno)); | |
191 | exit(1); | |
192 | } | |
193 | if(child == 0) { | |
194 | dup2(fd, 0); | |
195 | for(i = 3; i < FD_SETSIZE; i++) | |
196 | close(i); | |
197 | execvp(*progspec, progspec); | |
7b9c1cff | 198 | flog(LOG_ERR, "callscgi: %s: %s", *progspec, strerror(errno)); |
107aa2ef | 199 | _exit(127); |
f89ce57a FT |
200 | } |
201 | close(fd); | |
202 | } | |
203 | ||
204 | static void startnolisten(void) | |
205 | { | |
02cb2a3d | 206 | int i, fd; |
f89ce57a FT |
207 | |
208 | if((child = fork()) < 0) { | |
209 | flog(LOG_ERR, "could not fork: %s", strerror(errno)); | |
210 | exit(1); | |
211 | } | |
212 | if(child == 0) { | |
213 | for(i = 3; i < FD_SETSIZE; i++) | |
214 | close(i); | |
02cb2a3d FT |
215 | if((fd = open("/dev/null", O_RDONLY)) < 0) { |
216 | flog(LOG_ERR, "/dev/null: %s", strerror(errno)); | |
107aa2ef | 217 | _exit(127); |
02cb2a3d FT |
218 | } |
219 | dup2(fd, 0); | |
220 | close(fd); | |
f89ce57a | 221 | execvp(*progspec, progspec); |
7b9c1cff | 222 | flog(LOG_ERR, "callscgi: %s: %s", *progspec, strerror(errno)); |
107aa2ef | 223 | _exit(127); |
f89ce57a FT |
224 | } |
225 | } | |
226 | ||
227 | static int sconnect(void) | |
228 | { | |
229 | int fd; | |
230 | int err; | |
231 | socklen_t errlen; | |
232 | ||
233 | fd = socket(cafamily, SOCK_STREAM, 0); | |
234 | fcntl(fd, F_SETFL, fcntl(fd, F_GETFL) | O_NONBLOCK); | |
235 | while(1) { | |
236 | if(connect(fd, curaddr, caddrlen)) { | |
237 | if(errno == EINPROGRESS) { | |
238 | block(fd, EV_WRITE, 30); | |
239 | errlen = sizeof(err); | |
240 | if(getsockopt(fd, SOL_SOCKET, SO_ERROR, &err, &errlen) || ((errno = err) != 0)) { | |
241 | close(fd); | |
242 | return(-1); | |
243 | } | |
244 | return(fd); | |
245 | } | |
246 | close(fd); | |
247 | return(-1); | |
248 | } | |
249 | return(fd); | |
250 | } | |
251 | } | |
252 | ||
253 | static int econnect(void) | |
254 | { | |
255 | int fd; | |
256 | struct addrinfo *ai, *cai; | |
257 | int tries; | |
258 | char *unpath; | |
259 | struct sockaddr_un unm; | |
260 | ||
261 | tries = 0; | |
262 | retry: | |
263 | if(inspec != NULL) { | |
264 | fd = -1; | |
265 | for(cai = ai = resolv(0); cai != NULL; cai = cai->ai_next) { | |
266 | if((fd = socket(cai->ai_family, cai->ai_socktype, cai->ai_protocol)) < 0) | |
267 | continue; | |
268 | if(connect(fd, cai->ai_addr, cai->ai_addrlen)) { | |
269 | close(fd); | |
270 | fd = -1; | |
271 | continue; | |
272 | } | |
273 | break; | |
274 | } | |
f89ce57a | 275 | if(fd < 0) { |
02cb2a3d FT |
276 | if(tries++ < nolisten) { |
277 | sleep(1); | |
278 | goto retry; | |
279 | } | |
f89ce57a FT |
280 | flog(LOG_ERR, "could not connect to specified TCP address: %s", strerror(errno)); |
281 | exit(1); | |
282 | } | |
283 | curaddr = smalloc(caddrlen = cai->ai_addrlen); | |
284 | memcpy(curaddr, cai->ai_addr, caddrlen); | |
285 | cafamily = cai->ai_family; | |
286 | isanon = 0; | |
287 | freeaddrinfo(ai); | |
288 | return(fd); | |
289 | } else if((unspec != NULL) || (sockid != NULL)) { | |
290 | if((fd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) { | |
291 | flog(LOG_ERR, "could not create Unix socket: %s", strerror(errno)); | |
292 | exit(1); | |
293 | } | |
294 | if(unspec != NULL) | |
295 | unpath = unspec; | |
296 | else | |
297 | unpath = mksockid(sockid); | |
298 | unlink(unpath); | |
299 | unm.sun_family = AF_UNIX; | |
300 | strcpy(unm.sun_path, unpath); | |
301 | if(connect(fd, (struct sockaddr *)&unm, sizeof(unm))) { | |
302 | close(fd); | |
303 | if(tries++ < nolisten) { | |
304 | sleep(1); | |
305 | goto retry; | |
306 | } | |
307 | flog(LOG_ERR, "could not connect to Unix socket `%s': %s", unspec, strerror(errno)); | |
308 | exit(1); | |
309 | } | |
310 | curaddr = smalloc(caddrlen = sizeof(unm)); | |
311 | memcpy(curaddr, &unm, sizeof(unm)); | |
312 | cafamily = AF_UNIX; | |
313 | isanon = 0; | |
314 | return(fd); | |
315 | } else { | |
425eccf6 | 316 | flog(LOG_ERR, "callscgi: cannot use an anonymous socket without a program to start"); |
f89ce57a FT |
317 | exit(1); |
318 | } | |
319 | } | |
320 | ||
321 | static int startconn(void) | |
322 | { | |
323 | if(*progspec) { | |
324 | if(nolisten == 0) | |
325 | startlisten(); | |
326 | else | |
327 | startnolisten(); | |
328 | } | |
329 | if(curaddr != NULL) | |
330 | return(sconnect()); | |
331 | return(econnect()); | |
332 | } | |
333 | ||
334 | static void killcuraddr(void) | |
335 | { | |
336 | if(curaddr == NULL) | |
337 | return; | |
338 | if(isanon) { | |
339 | unlink(((struct sockaddr_un *)curaddr)->sun_path); | |
340 | if(child > 0) | |
341 | kill(child, SIGTERM); | |
342 | } | |
343 | free(curaddr); | |
344 | curaddr = NULL; | |
345 | } | |
346 | ||
347 | static int reconn(void) | |
348 | { | |
349 | int fd; | |
350 | ||
351 | if(curaddr != NULL) { | |
352 | if((fd = sconnect()) >= 0) | |
353 | return(fd); | |
354 | killcuraddr(); | |
355 | } | |
356 | return(startconn()); | |
357 | } | |
358 | ||
359 | static off_t passdata(FILE *in, FILE *out) | |
360 | { | |
361 | size_t read; | |
362 | off_t total; | |
363 | char buf[8192]; | |
364 | ||
365 | total = 0; | |
366 | while(!feof(in)) { | |
367 | read = fread(buf, 1, sizeof(buf), in); | |
368 | if(ferror(in)) | |
369 | return(-1); | |
370 | if(fwrite(buf, 1, read, out) != read) | |
371 | return(-1); | |
372 | total += read; | |
373 | } | |
374 | return(total); | |
375 | } | |
376 | ||
377 | static void bufaddenv(struct charbuf *dst, char *name, char *fmt, ...) | |
378 | { | |
379 | va_list args; | |
380 | ||
381 | bufcatstr2(*dst, name); | |
382 | va_start(args, fmt); | |
383 | bvprintf(dst, fmt, args); | |
384 | va_end(args); | |
385 | bufadd(*dst, 0); | |
386 | } | |
387 | ||
388 | static char *absolutify(char *file) | |
389 | { | |
390 | static int inited = 0; | |
391 | static char cwd[1024]; | |
392 | ||
393 | if(*file != '/') { | |
394 | if(!inited) { | |
395 | getcwd(cwd, sizeof(cwd)); | |
396 | inited = 1; | |
397 | } | |
398 | return(sprintf2("%s/%s", cwd, file)); | |
399 | } | |
400 | return(sstrdup(file)); | |
401 | } | |
402 | ||
403 | /* Mostly copied from callcgi. */ | |
404 | static void mkcgienv(struct hthead *req, struct charbuf *dst) | |
405 | { | |
406 | int i; | |
53d666ca | 407 | char *url, *pi, *tmp, *qp, *h, *p; |
f89ce57a FT |
408 | |
409 | bufaddenv(dst, "SERVER_SOFTWARE", "ashd/%s", VERSION); | |
410 | bufaddenv(dst, "GATEWAY_INTERFACE", "CGI/1.1"); | |
411 | bufaddenv(dst, "SCGI", "1"); | |
412 | bufaddenv(dst, "SERVER_PROTOCOL", "%s", req->ver); | |
413 | bufaddenv(dst, "REQUEST_METHOD", "%s", req->method); | |
414 | bufaddenv(dst, "REQUEST_URI", "%s", req->url); | |
f89ce57a FT |
415 | url = sstrdup(req->url); |
416 | if((qp = strchr(url, '?')) != NULL) | |
417 | *(qp++) = 0; | |
418 | /* XXX: This is an ugly hack (I think), but though I can think of | |
419 | * several alternatives, none seem to be better. */ | |
2d65add0 FT |
420 | if(*req->rest && (strlen(url) >= strlen(req->rest)) && |
421 | !strcmp(req->rest, url + strlen(url) - strlen(req->rest))) { | |
53d666ca FT |
422 | url[strlen(url) - strlen(req->rest)] = 0; |
423 | } | |
424 | if((pi = unquoteurl(req->rest)) == NULL) | |
425 | pi = sstrdup(req->rest); | |
426 | if(!strcmp(url, "/")) { | |
427 | /* This seems to be normal CGI behavior, but see callcgi.c for | |
428 | * details. */ | |
429 | url[0] = 0; | |
430 | pi = sprintf2("/%s", tmp = pi); | |
431 | free(tmp); | |
f89ce57a | 432 | } |
53d666ca FT |
433 | bufaddenv(dst, "PATH_INFO", pi); |
434 | bufaddenv(dst, "SCRIPT_NAME", url); | |
f89ce57a | 435 | bufaddenv(dst, "QUERY_STRING", "%s", qp?qp:""); |
53d666ca | 436 | free(pi); |
b77076c4 | 437 | free(url); |
f89ce57a FT |
438 | if((h = getheader(req, "Host")) != NULL) |
439 | bufaddenv(dst, "SERVER_NAME", "%s", h); | |
1af656d2 FT |
440 | if((h = getheader(req, "X-Ash-Server-Address")) != NULL) |
441 | bufaddenv(dst, "SERVER_ADDR", "%s", h); | |
f89ce57a FT |
442 | if((h = getheader(req, "X-Ash-Server-Port")) != NULL) |
443 | bufaddenv(dst, "SERVER_PORT", "%s", h); | |
381f9919 FT |
444 | if((h = getheader(req, "X-Ash-Remote-User")) != NULL) |
445 | bufaddenv(dst, "REMOTE_USER", "%s", h); | |
9230295c | 446 | if(((h = getheader(req, "X-Ash-Protocol")) != NULL) && !strcmp(h, "https")) |
f89ce57a FT |
447 | bufaddenv(dst, "HTTPS", "on"); |
448 | if((h = getheader(req, "X-Ash-Address")) != NULL) | |
449 | bufaddenv(dst, "REMOTE_ADDR", "%s", h); | |
1af656d2 FT |
450 | if((h = getheader(req, "X-Ash-Port")) != NULL) |
451 | bufaddenv(dst, "REMOTE_PORT", "%s", h); | |
f89ce57a FT |
452 | if((h = getheader(req, "Content-Type")) != NULL) |
453 | bufaddenv(dst, "CONTENT_TYPE", "%s", h); | |
454 | if((h = getheader(req, "Content-Length")) != NULL) | |
455 | bufaddenv(dst, "CONTENT_LENGTH", "%s", h); | |
456 | else | |
457 | bufaddenv(dst, "CONTENT_LENGTH", "0"); | |
e25bf4f9 FT |
458 | if((h = getheader(req, "X-Ash-File")) != NULL) { |
459 | h = absolutify(h); | |
460 | bufaddenv(dst, "SCRIPT_FILENAME", "%s", h); | |
461 | free(h); | |
462 | } | |
f89ce57a | 463 | for(i = 0; i < req->noheaders; i++) { |
02cb2a3d | 464 | h = sprintf2("HTTP_%s", req->headers[i][0]); |
f89ce57a FT |
465 | for(p = h; *p; p++) { |
466 | if(isalnum(*p)) | |
467 | *p = toupper(*p); | |
468 | else | |
469 | *p = '_'; | |
470 | } | |
471 | bufcatstr2(*dst, h); | |
472 | free(h); | |
473 | bufcatstr2(*dst, req->headers[i][1]); | |
474 | } | |
475 | } | |
476 | ||
f89ce57a FT |
477 | static struct hthead *parseresp(FILE *in) |
478 | { | |
479 | struct hthead *resp; | |
480 | char *st, *p; | |
481 | ||
482 | omalloc(resp); | |
483 | resp->ver = sstrdup("HTTP/1.1"); | |
484 | if(parseheaders(resp, in)) { | |
485 | freehthead(resp); | |
486 | return(NULL); | |
487 | } | |
488 | if((st = getheader(resp, "Status")) != NULL) { | |
489 | if((p = strchr(st, ' ')) != NULL) { | |
490 | *(p++) = 0; | |
491 | resp->code = atoi(st); | |
492 | resp->msg = sstrdup(p); | |
493 | } else { | |
494 | resp->code = atoi(st); | |
62e76c42 | 495 | resp->msg = sstrdup(httpdefstatus(resp->code)); |
f89ce57a FT |
496 | } |
497 | headrmheader(resp, "Status"); | |
498 | } else if(getheader(resp, "Location")) { | |
499 | resp->code = 303; | |
500 | resp->msg = sstrdup("See Other"); | |
501 | } else { | |
502 | resp->code = 200; | |
503 | resp->msg = sstrdup("OK"); | |
504 | } | |
505 | return(resp); | |
506 | } | |
507 | ||
508 | static void serve(struct muth *muth, va_list args) | |
509 | { | |
510 | vavar(struct hthead *, req); | |
511 | vavar(int, fd); | |
512 | vavar(int, sfd); | |
513 | FILE *is, *os; | |
514 | struct charbuf head; | |
515 | struct hthead *resp; | |
516 | ||
517 | sfd = reconn(); | |
518 | is = mtstdopen(fd, 1, 60, "r+"); | |
519 | os = mtstdopen(sfd, 1, 600, "r+"); | |
520 | ||
521 | bufinit(head); | |
522 | mkcgienv(req, &head); | |
523 | fprintf(os, "%zi:", head.d); | |
524 | fwrite(head.b, head.d, 1, os); | |
525 | fputc(',', os); | |
526 | buffree(head); | |
527 | if(passdata(is, os) < 0) | |
528 | goto out; | |
529 | ||
530 | if((resp = parseresp(os)) == NULL) | |
531 | goto out; | |
532 | writeresp(is, resp); | |
533 | freehthead(resp); | |
534 | fputc('\n', is); | |
535 | if(passdata(os, is) < 0) | |
536 | goto out; | |
537 | ||
538 | out: | |
539 | freehthead(req); | |
540 | fclose(is); | |
541 | fclose(os); | |
542 | } | |
543 | ||
544 | static void listenloop(struct muth *muth, va_list args) | |
545 | { | |
546 | vavar(int, lfd); | |
547 | int fd; | |
548 | struct hthead *req; | |
549 | ||
550 | while(1) { | |
551 | block(0, EV_READ, 0); | |
552 | if((fd = recvreq(lfd, &req)) < 0) { | |
553 | if(errno != 0) | |
554 | flog(LOG_ERR, "recvreq: %s", strerror(errno)); | |
555 | break; | |
556 | } | |
557 | mustart(serve, req, fd); | |
558 | } | |
559 | } | |
560 | ||
fd735432 FT |
561 | static void sigign(int sig) |
562 | { | |
563 | } | |
564 | ||
9c86e336 FT |
565 | static void sigexit(int sig) |
566 | { | |
254eb937 | 567 | shutdown(0, SHUT_RDWR); |
9c86e336 FT |
568 | exit(0); |
569 | } | |
570 | ||
f89ce57a FT |
571 | static void usage(FILE *out) |
572 | { | |
425eccf6 | 573 | fprintf(out, "usage: callscgi [-h] [-N RETRIES] [-i ID] [-u UNIX-PATH] [-t [HOST:]TCP-PORT] [PROGRAM [ARGS...]]\n"); |
f89ce57a FT |
574 | } |
575 | ||
576 | int main(int argc, char **argv) | |
577 | { | |
578 | int c; | |
579 | ||
580 | while((c = getopt(argc, argv, "+hN:i:u:t:")) >= 0) { | |
581 | switch(c) { | |
582 | case 'h': | |
583 | usage(stdout); | |
584 | exit(0); | |
585 | case 'N': | |
586 | nolisten = atoi(optarg); | |
587 | break; | |
588 | case 'i': | |
589 | sockid = optarg; | |
590 | break; | |
591 | case 'u': | |
592 | unspec = optarg; | |
593 | break; | |
594 | case 't': | |
595 | inspec = optarg; | |
596 | break; | |
597 | default: | |
598 | usage(stderr); | |
599 | exit(1); | |
600 | } | |
601 | } | |
602 | progspec = argv + optind; | |
603 | if(((sockid != NULL) + (unspec != NULL) + (inspec != NULL)) > 1) { | |
425eccf6 | 604 | flog(LOG_ERR, "callscgi: at most one of -i, -u or -t may be given"); |
f89ce57a FT |
605 | exit(1); |
606 | } | |
607 | signal(SIGCHLD, SIG_IGN); | |
fd735432 | 608 | signal(SIGPIPE, sigign); |
9c86e336 FT |
609 | signal(SIGINT, sigexit); |
610 | signal(SIGTERM, sigexit); | |
f89ce57a FT |
611 | mustart(listenloop, 0); |
612 | atexit(killcuraddr); | |
613 | ioloop(); | |
614 | return(0); | |
615 | } |