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1dac33db0ff6973fc421997b1afd8ca26a8dd20f
[openwrt/svn-archive/archive.git] / package / uhttpd / src / uhttpd-utils.c
1 /*
2 * uhttpd - Tiny single-threaded httpd - Utility functions
3 *
4 * Copyright (C) 2010 Jo-Philipp Wich <xm@subsignal.org>
5 *
6 * Licensed under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18
19 #define _XOPEN_SOURCE 500 /* crypt() */
20 #define _BSD_SOURCE /* strcasecmp(), strncasecmp() */
21
22 #include "uhttpd.h"
23 #include "uhttpd-utils.h"
24
25 #ifdef HAVE_TLS
26 #include "uhttpd-tls.h"
27 #endif
28
29
30 static char *uh_index_files[] = {
31 "index.html",
32 "index.htm",
33 "default.html",
34 "default.htm"
35 };
36
37
38 const char * sa_straddr(void *sa)
39 {
40 static char str[INET6_ADDRSTRLEN];
41 struct sockaddr_in *v4 = (struct sockaddr_in *)sa;
42 struct sockaddr_in6 *v6 = (struct sockaddr_in6 *)sa;
43
44 if( v4->sin_family == AF_INET )
45 return inet_ntop(AF_INET, &(v4->sin_addr), str, sizeof(str));
46 else
47 return inet_ntop(AF_INET6, &(v6->sin6_addr), str, sizeof(str));
48 }
49
50 const char * sa_strport(void *sa)
51 {
52 static char str[6];
53 snprintf(str, sizeof(str), "%i", sa_port(sa));
54 return str;
55 }
56
57 int sa_port(void *sa)
58 {
59 return ntohs(((struct sockaddr_in6 *)sa)->sin6_port);
60 }
61
62 int sa_rfc1918(void *sa)
63 {
64 struct sockaddr_in *v4 = (struct sockaddr_in *)sa;
65 unsigned long a = htonl(v4->sin_addr.s_addr);
66
67 if( v4->sin_family == AF_INET )
68 {
69 return ((a >= 0x0A000000) && (a <= 0x0AFFFFFF)) ||
70 ((a >= 0xAC100000) && (a <= 0xAC1FFFFF)) ||
71 ((a >= 0xC0A80000) && (a <= 0xC0A8FFFF));
72 }
73
74 return 0;
75 }
76
77 /* Simple strstr() like function that takes len arguments for both haystack and needle. */
78 char *strfind(char *haystack, int hslen, const char *needle, int ndlen)
79 {
80 int match = 0;
81 int i, j;
82
83 for( i = 0; i < hslen; i++ )
84 {
85 if( haystack[i] == needle[0] )
86 {
87 match = ((ndlen == 1) || ((i + ndlen) <= hslen));
88
89 for( j = 1; (j < ndlen) && ((i + j) < hslen); j++ )
90 {
91 if( haystack[i+j] != needle[j] )
92 {
93 match = 0;
94 break;
95 }
96 }
97
98 if( match )
99 return &haystack[i];
100 }
101 }
102
103 return NULL;
104 }
105
106 /* interruptable select() */
107 int select_intr(int n, fd_set *r, fd_set *w, fd_set *e, struct timeval *t)
108 {
109 int rv;
110 sigset_t ssn, sso;
111
112 /* unblock SIGCHLD */
113 sigemptyset(&ssn);
114 sigaddset(&ssn, SIGCHLD);
115 sigaddset(&ssn, SIGPIPE);
116 sigprocmask(SIG_UNBLOCK, &ssn, &sso);
117
118 rv = select(n, r, w, e, t);
119
120 /* restore signal mask */
121 sigprocmask(SIG_SETMASK, &sso, NULL);
122
123 return rv;
124 }
125
126
127 int uh_tcp_send_lowlevel(struct client *cl, const char *buf, int len)
128 {
129 fd_set writer;
130 struct timeval timeout;
131
132 FD_ZERO(&writer);
133 FD_SET(cl->socket, &writer);
134
135 timeout.tv_sec = cl->server->conf->network_timeout;
136 timeout.tv_usec = 0;
137
138 if (select(cl->socket + 1, NULL, &writer, NULL, &timeout) > 0)
139 return send(cl->socket, buf, len, 0);
140
141 return -1;
142 }
143
144 int uh_tcp_send(struct client *cl, const char *buf, int len)
145 {
146 #ifdef HAVE_TLS
147 if (cl->tls)
148 return cl->server->conf->tls_send(cl, (void *)buf, len);
149 else
150 #endif
151 return uh_tcp_send_lowlevel(cl, buf, len);
152 }
153
154 int uh_tcp_peek(struct client *cl, char *buf, int len)
155 {
156 /* sanity check, prevent overflowing peek buffer */
157 if (len > sizeof(cl->peekbuf))
158 return -1;
159
160 int sz = uh_tcp_recv(cl, buf, len);
161
162 /* store received data in peek buffer */
163 if( sz > 0 )
164 {
165 cl->peeklen = sz;
166 memcpy(cl->peekbuf, buf, sz);
167 }
168
169 return sz;
170 }
171
172 int uh_tcp_recv_lowlevel(struct client *cl, char *buf, int len)
173 {
174 fd_set reader;
175 struct timeval timeout;
176
177 FD_ZERO(&reader);
178 FD_SET(cl->socket, &reader);
179
180 timeout.tv_sec = cl->server->conf->network_timeout;
181 timeout.tv_usec = 0;
182
183 if (select(cl->socket + 1, &reader, NULL, NULL, &timeout) > 0)
184 return recv(cl->socket, buf, len, 0);
185
186 return -1;
187 }
188
189 int uh_tcp_recv(struct client *cl, char *buf, int len)
190 {
191 int sz = 0;
192 int rsz = 0;
193
194 /* first serve data from peek buffer */
195 if (cl->peeklen > 0)
196 {
197 sz = min(cl->peeklen, len);
198 len -= sz; cl->peeklen -= sz;
199 memcpy(buf, cl->peekbuf, sz);
200 memmove(cl->peekbuf, &cl->peekbuf[sz], cl->peeklen);
201 }
202
203 /* caller wants more */
204 if (len > 0)
205 {
206 #ifdef HAVE_TLS
207 if (cl->tls)
208 rsz = cl->server->conf->tls_recv(cl, (void *)&buf[sz], len);
209 else
210 #endif
211 rsz = uh_tcp_recv_lowlevel(cl, (void *)&buf[sz], len);
212
213 if (rsz < 0)
214 return rsz;
215
216 sz += rsz;
217 }
218
219 return sz;
220 }
221
222
223 int uh_http_sendhf(struct client *cl, int code, const char *summary, const char *fmt, ...)
224 {
225 va_list ap;
226
227 char buffer[UH_LIMIT_MSGHEAD];
228 int len;
229
230 len = snprintf(buffer, sizeof(buffer),
231 "HTTP/1.1 %03i %s\r\n"
232 "Connection: close\r\n"
233 "Content-Type: text/plain\r\n"
234 "Transfer-Encoding: chunked\r\n\r\n",
235 code, summary
236 );
237
238 ensure_ret(uh_tcp_send(cl, buffer, len));
239
240 va_start(ap, fmt);
241 len = vsnprintf(buffer, sizeof(buffer), fmt, ap);
242 va_end(ap);
243
244 ensure_ret(uh_http_sendc(cl, buffer, len));
245 ensure_ret(uh_http_sendc(cl, NULL, 0));
246
247 return 0;
248 }
249
250
251 int uh_http_sendc(struct client *cl, const char *data, int len)
252 {
253 char chunk[8];
254 int clen;
255
256 if( len == -1 )
257 len = strlen(data);
258
259 if( len > 0 )
260 {
261 clen = snprintf(chunk, sizeof(chunk), "%X\r\n", len);
262 ensure_ret(uh_tcp_send(cl, chunk, clen));
263 ensure_ret(uh_tcp_send(cl, data, len));
264 ensure_ret(uh_tcp_send(cl, "\r\n", 2));
265 }
266 else
267 {
268 ensure_ret(uh_tcp_send(cl, "0\r\n\r\n", 5));
269 }
270
271 return 0;
272 }
273
274 int uh_http_sendf(
275 struct client *cl, struct http_request *req, const char *fmt, ...
276 ) {
277 va_list ap;
278 char buffer[UH_LIMIT_MSGHEAD];
279 int len;
280
281 va_start(ap, fmt);
282 len = vsnprintf(buffer, sizeof(buffer), fmt, ap);
283 va_end(ap);
284
285 if( (req != NULL) && (req->version > 1.0) )
286 ensure_ret(uh_http_sendc(cl, buffer, len));
287 else if( len > 0 )
288 ensure_ret(uh_tcp_send(cl, buffer, len));
289
290 return 0;
291 }
292
293 int uh_http_send(
294 struct client *cl, struct http_request *req, const char *buf, int len
295 ) {
296 if( len < 0 )
297 len = strlen(buf);
298
299 if( (req != NULL) && (req->version > 1.0) )
300 ensure_ret(uh_http_sendc(cl, buf, len));
301 else if( len > 0 )
302 ensure_ret(uh_tcp_send(cl, buf, len));
303
304 return 0;
305 }
306
307
308 /* blen is the size of buf; slen is the length of src. The input-string need
309 ** not be, and the output string will not be, null-terminated. Returns the
310 ** length of the decoded string, -1 on buffer overflow, -2 on malformed string. */
311 int uh_urldecode(char *buf, int blen, const char *src, int slen)
312 {
313 int i;
314 int len = 0;
315
316 #define hex(x) \
317 (((x) <= '9') ? ((x) - '0') : \
318 (((x) <= 'F') ? ((x) - 'A' + 10) : \
319 ((x) - 'a' + 10)))
320
321 for( i = 0; (i < slen) && (len < blen); i++ )
322 {
323 if( src[i] == '%' )
324 {
325 if( ((i+2) < slen) && isxdigit(src[i+1]) && isxdigit(src[i+2]) )
326 {
327 buf[len++] = (char)(16 * hex(src[i+1]) + hex(src[i+2]));
328 i += 2;
329 }
330 else
331 {
332 /* Encoding error: it's hard to think of a
333 ** scenario in which returning an incorrect
334 ** 'decoding' of the malformed string is
335 ** preferable to signaling an error condition. */
336 #if 0 /* WORSE_IS_BETTER */
337 buf[len++] = '%';
338 #else
339 return -2;
340 #endif
341 }
342 }
343 else
344 {
345 buf[len++] = src[i];
346 }
347 }
348
349 return (i == slen) ? len : -1;
350 }
351
352 /* blen is the size of buf; slen is the length of src. The input-string need
353 ** not be, and the output string will not be, null-terminated. Returns the
354 ** length of the encoded string, or -1 on error (buffer overflow) */
355 int uh_urlencode(char *buf, int blen, const char *src, int slen)
356 {
357 int i;
358 int len = 0;
359 const char hex[] = "0123456789abcdef";
360
361 for( i = 0; (i < slen) && (len < blen); i++ )
362 {
363 if( isalnum(src[i]) || (src[i] == '-') || (src[i] == '_') ||
364 (src[i] == '.') || (src[i] == '~') )
365 {
366 buf[len++] = src[i];
367 }
368 else if( (len+3) <= blen )
369 {
370 buf[len++] = '%';
371 buf[len++] = hex[(src[i] >> 4) & 15];
372 buf[len++] = hex[ src[i] & 15];
373 }
374 else
375 {
376 len = -1;
377 break;
378 }
379 }
380
381 return (i == slen) ? len : -1;
382 }
383
384 int uh_b64decode(char *buf, int blen, const unsigned char *src, int slen)
385 {
386 int i = 0;
387 int len = 0;
388
389 unsigned int cin = 0;
390 unsigned int cout = 0;
391
392
393 for( i = 0; (i <= slen) && (src[i] != 0); i++ )
394 {
395 cin = src[i];
396
397 if( (cin >= '0') && (cin <= '9') )
398 cin = cin - '0' + 52;
399 else if( (cin >= 'A') && (cin <= 'Z') )
400 cin = cin - 'A';
401 else if( (cin >= 'a') && (cin <= 'z') )
402 cin = cin - 'a' + 26;
403 else if( cin == '+' )
404 cin = 62;
405 else if( cin == '/' )
406 cin = 63;
407 else if( cin == '=' )
408 cin = 0;
409 else
410 continue;
411
412 cout = (cout << 6) | cin;
413
414 if( (i % 4) == 3 )
415 {
416 if( (len + 3) < blen )
417 {
418 buf[len++] = (char)(cout >> 16);
419 buf[len++] = (char)(cout >> 8);
420 buf[len++] = (char)(cout);
421 }
422 else
423 {
424 break;
425 }
426 }
427 }
428
429 buf[len++] = 0;
430 return len;
431 }
432
433 static char * canonpath(const char *path, char *path_resolved)
434 {
435 char path_copy[PATH_MAX];
436 char *path_cpy = path_copy;
437 char *path_res = path_resolved;
438
439 struct stat s;
440
441
442 /* relative -> absolute */
443 if( *path != '/' )
444 {
445 getcwd(path_copy, PATH_MAX);
446 strncat(path_copy, "/", PATH_MAX - strlen(path_copy));
447 strncat(path_copy, path, PATH_MAX - strlen(path_copy));
448 }
449 else
450 {
451 strncpy(path_copy, path, PATH_MAX);
452 }
453
454 /* normalize */
455 while( (*path_cpy != '\0') && (path_cpy < (path_copy + PATH_MAX - 2)) )
456 {
457 if( *path_cpy == '/' )
458 {
459 /* skip repeating / */
460 if( path_cpy[1] == '/' )
461 {
462 path_cpy++;
463 continue;
464 }
465
466 /* /./ or /../ */
467 else if( path_cpy[1] == '.' )
468 {
469 /* skip /./ */
470 if( (path_cpy[2] == '/') || (path_cpy[2] == '\0') )
471 {
472 path_cpy += 2;
473 continue;
474 }
475
476 /* collapse /x/../ */
477 else if( (path_cpy[2] == '.') &&
478 ((path_cpy[3] == '/') || (path_cpy[3] == '\0'))
479 ) {
480 while( (path_res > path_resolved) && (*--path_res != '/') )
481 ;
482
483 path_cpy += 3;
484 continue;
485 }
486 }
487 }
488
489 *path_res++ = *path_cpy++;
490 }
491
492 /* remove trailing slash if not root / */
493 if( (path_res > (path_resolved+1)) && (path_res[-1] == '/') )
494 path_res--;
495 else if( path_res == path_resolved )
496 *path_res++ = '/';
497
498 *path_res = '\0';
499
500 /* test access */
501 if( !stat(path_resolved, &s) && (s.st_mode & S_IROTH) )
502 return path_resolved;
503
504 return NULL;
505 }
506
507 /* Returns NULL on error.
508 ** NB: improperly encoded URL should give client 400 [Bad Syntax]; returning
509 ** NULL here causes 404 [Not Found], but that's not too unreasonable. */
510 struct path_info * uh_path_lookup(struct client *cl, const char *url)
511 {
512 static char path_phys[PATH_MAX];
513 static char path_info[PATH_MAX];
514 static struct path_info p;
515
516 char buffer[UH_LIMIT_MSGHEAD];
517 char *docroot = cl->server->conf->docroot;
518 char *pathptr = NULL;
519
520 int slash = 0;
521 int no_sym = cl->server->conf->no_symlinks;
522 int i = 0;
523 struct stat s;
524
525 /* back out early if url is undefined */
526 if ( url == NULL )
527 return NULL;
528
529 memset(path_phys, 0, sizeof(path_phys));
530 memset(path_info, 0, sizeof(path_info));
531 memset(buffer, 0, sizeof(buffer));
532 memset(&p, 0, sizeof(p));
533
534 /* copy docroot */
535 memcpy(buffer, docroot,
536 min(strlen(docroot), sizeof(buffer) - 1));
537
538 /* separate query string from url */
539 if( (pathptr = strchr(url, '?')) != NULL )
540 {
541 p.query = pathptr[1] ? pathptr + 1 : NULL;
542
543 /* urldecode component w/o query */
544 if( pathptr > url )
545 if ( uh_urldecode(
546 &buffer[strlen(docroot)],
547 sizeof(buffer) - strlen(docroot) - 1,
548 url, pathptr - url ) < 0 )
549 return NULL; /* bad URL */
550 }
551
552 /* no query string, decode all of url */
553 else
554 {
555 if ( uh_urldecode(
556 &buffer[strlen(docroot)],
557 sizeof(buffer) - strlen(docroot) - 1,
558 url, strlen(url) ) < 0 )
559 return NULL; /* bad URL */
560 }
561
562 /* create canon path */
563 for( i = strlen(buffer), slash = (buffer[max(0, i-1)] == '/'); i >= 0; i-- )
564 {
565 if( (buffer[i] == 0) || (buffer[i] == '/') )
566 {
567 memset(path_info, 0, sizeof(path_info));
568 memcpy(path_info, buffer, min(i + 1, sizeof(path_info) - 1));
569
570 if( no_sym ? realpath(path_info, path_phys)
571 : canonpath(path_info, path_phys)
572 ) {
573 memset(path_info, 0, sizeof(path_info));
574 memcpy(path_info, &buffer[i],
575 min(strlen(buffer) - i, sizeof(path_info) - 1));
576
577 break;
578 }
579 }
580 }
581
582 /* check whether found path is within docroot */
583 if( strncmp(path_phys, docroot, strlen(docroot)) ||
584 ((path_phys[strlen(docroot)] != 0) &&
585 (path_phys[strlen(docroot)] != '/'))
586 ) {
587 return NULL;
588 }
589
590 /* test current path */
591 if( ! stat(path_phys, &p.stat) )
592 {
593 /* is a regular file */
594 if( p.stat.st_mode & S_IFREG )
595 {
596 p.root = docroot;
597 p.phys = path_phys;
598 p.name = &path_phys[strlen(docroot)];
599 p.info = path_info[0] ? path_info : NULL;
600 }
601
602 /* is a directory */
603 else if( (p.stat.st_mode & S_IFDIR) && !strlen(path_info) )
604 {
605 /* ensure trailing slash */
606 if( path_phys[strlen(path_phys)-1] != '/' )
607 path_phys[strlen(path_phys)] = '/';
608
609 /* try to locate index file */
610 memset(buffer, 0, sizeof(buffer));
611 memcpy(buffer, path_phys, sizeof(buffer));
612 pathptr = &buffer[strlen(buffer)];
613
614 /* if requested url resolves to a directory and a trailing slash
615 is missing in the request url, redirect the client to the same
616 url with trailing slash appended */
617 if( !slash )
618 {
619 uh_http_sendf(cl, NULL,
620 "HTTP/1.1 302 Found\r\n"
621 "Location: %s%s%s\r\n"
622 "Connection: close\r\n\r\n",
623 &path_phys[strlen(docroot)],
624 p.query ? "?" : "",
625 p.query ? p.query : ""
626 );
627
628 p.redirected = 1;
629 }
630 else if( cl->server->conf->index_file )
631 {
632 strncat(buffer, cl->server->conf->index_file, sizeof(buffer));
633
634 if( !stat(buffer, &s) && (s.st_mode & S_IFREG) )
635 {
636 memcpy(path_phys, buffer, sizeof(path_phys));
637 memcpy(&p.stat, &s, sizeof(p.stat));
638 }
639 }
640 else
641 {
642 for( i = 0; i < array_size(uh_index_files); i++ )
643 {
644 strncat(buffer, uh_index_files[i], sizeof(buffer));
645
646 if( !stat(buffer, &s) && (s.st_mode & S_IFREG) )
647 {
648 memcpy(path_phys, buffer, sizeof(path_phys));
649 memcpy(&p.stat, &s, sizeof(p.stat));
650 break;
651 }
652
653 *pathptr = 0;
654 }
655 }
656
657 p.root = docroot;
658 p.phys = path_phys;
659 p.name = &path_phys[strlen(docroot)];
660 }
661 }
662
663 return p.phys ? &p : NULL;
664 }
665
666
667 static struct auth_realm *uh_realms = NULL;
668
669 struct auth_realm * uh_auth_add(char *path, char *user, char *pass)
670 {
671 struct auth_realm *new = NULL;
672 struct passwd *pwd;
673
674 #ifdef HAVE_SHADOW
675 struct spwd *spwd;
676 #endif
677
678 if((new = (struct auth_realm *)malloc(sizeof(struct auth_realm))) != NULL)
679 {
680 memset(new, 0, sizeof(struct auth_realm));
681
682 memcpy(new->path, path,
683 min(strlen(path), sizeof(new->path) - 1));
684
685 memcpy(new->user, user,
686 min(strlen(user), sizeof(new->user) - 1));
687
688 /* given password refers to a passwd entry */
689 if( (strlen(pass) > 3) && !strncmp(pass, "$p$", 3) )
690 {
691 #ifdef HAVE_SHADOW
692 /* try to resolve shadow entry */
693 if( ((spwd = getspnam(&pass[3])) != NULL) && spwd->sp_pwdp )
694 {
695 memcpy(new->pass, spwd->sp_pwdp,
696 min(strlen(spwd->sp_pwdp), sizeof(new->pass) - 1));
697 }
698
699 else
700 #endif
701
702 /* try to resolve passwd entry */
703 if( ((pwd = getpwnam(&pass[3])) != NULL) && pwd->pw_passwd &&
704 (pwd->pw_passwd[0] != '!') && (pwd->pw_passwd[0] != 0)
705 ) {
706 memcpy(new->pass, pwd->pw_passwd,
707 min(strlen(pwd->pw_passwd), sizeof(new->pass) - 1));
708 }
709 }
710
711 /* ordinary pwd */
712 else
713 {
714 memcpy(new->pass, pass,
715 min(strlen(pass), sizeof(new->pass) - 1));
716 }
717
718 if( new->pass[0] )
719 {
720 new->next = uh_realms;
721 uh_realms = new;
722
723 return new;
724 }
725
726 free(new);
727 }
728
729 return NULL;
730 }
731
732 int uh_auth_check(
733 struct client *cl, struct http_request *req, struct path_info *pi
734 ) {
735 int i, plen, rlen, protected;
736 char buffer[UH_LIMIT_MSGHEAD];
737 char *user = NULL;
738 char *pass = NULL;
739
740 struct auth_realm *realm = NULL;
741
742 plen = strlen(pi->name);
743 protected = 0;
744
745 /* check whether at least one realm covers the requested url */
746 for( realm = uh_realms; realm; realm = realm->next )
747 {
748 rlen = strlen(realm->path);
749
750 if( (plen >= rlen) && !strncasecmp(pi->name, realm->path, rlen) )
751 {
752 req->realm = realm;
753 protected = 1;
754 break;
755 }
756 }
757
758 /* requested resource is covered by a realm */
759 if( protected )
760 {
761 /* try to get client auth info */
762 foreach_header(i, req->headers)
763 {
764 if( !strcasecmp(req->headers[i], "Authorization") &&
765 (strlen(req->headers[i+1]) > 6) &&
766 !strncasecmp(req->headers[i+1], "Basic ", 6)
767 ) {
768 memset(buffer, 0, sizeof(buffer));
769 uh_b64decode(buffer, sizeof(buffer) - 1,
770 (unsigned char *) &req->headers[i+1][6],
771 strlen(req->headers[i+1]) - 6);
772
773 if( (pass = strchr(buffer, ':')) != NULL )
774 {
775 user = buffer;
776 *pass++ = 0;
777 }
778
779 break;
780 }
781 }
782
783 /* have client auth */
784 if( user && pass )
785 {
786 /* find matching realm */
787 for( realm = uh_realms; realm; realm = realm->next )
788 {
789 rlen = strlen(realm->path);
790
791 if( (plen >= rlen) &&
792 !strncasecmp(pi->name, realm->path, rlen) &&
793 !strcmp(user, realm->user)
794 ) {
795 req->realm = realm;
796 break;
797 }
798 }
799
800 /* found a realm matching the username */
801 if( realm )
802 {
803 /* check user pass */
804 if (!strcmp(pass, realm->pass) ||
805 !strcmp(crypt(pass, realm->pass), realm->pass))
806 return 1;
807 }
808 }
809
810 /* 401 */
811 uh_http_sendf(cl, NULL,
812 "HTTP/%.1f 401 Authorization Required\r\n"
813 "WWW-Authenticate: Basic realm=\"%s\"\r\n"
814 "Content-Type: text/plain\r\n"
815 "Content-Length: 23\r\n\r\n"
816 "Authorization Required\n",
817 req->version, cl->server->conf->realm
818 );
819
820 return 0;
821 }
822
823 return 1;
824 }
825
826
827 static struct listener *uh_listeners = NULL;
828 static struct client *uh_clients = NULL;
829
830 struct listener * uh_listener_add(int sock, struct config *conf)
831 {
832 struct listener *new = NULL;
833 socklen_t sl;
834
835 if( (new = (struct listener *)malloc(sizeof(struct listener))) != NULL )
836 {
837 memset(new, 0, sizeof(struct listener));
838
839 new->socket = sock;
840 new->conf = conf;
841
842 /* get local endpoint addr */
843 sl = sizeof(struct sockaddr_in6);
844 memset(&(new->addr), 0, sl);
845 getsockname(sock, (struct sockaddr *) &(new->addr), &sl);
846
847 new->next = uh_listeners;
848 uh_listeners = new;
849
850 return new;
851 }
852
853 return NULL;
854 }
855
856 struct listener * uh_listener_lookup(int sock)
857 {
858 struct listener *cur = NULL;
859
860 for( cur = uh_listeners; cur; cur = cur->next )
861 if( cur->socket == sock )
862 return cur;
863
864 return NULL;
865 }
866
867
868 struct client * uh_client_add(int sock, struct listener *serv)
869 {
870 struct client *new = NULL;
871 socklen_t sl;
872
873 if( (new = (struct client *)malloc(sizeof(struct client))) != NULL )
874 {
875 memset(new, 0, sizeof(struct client));
876
877 new->socket = sock;
878 new->server = serv;
879
880 /* get remote endpoint addr */
881 sl = sizeof(struct sockaddr_in6);
882 memset(&(new->peeraddr), 0, sl);
883 getpeername(sock, (struct sockaddr *) &(new->peeraddr), &sl);
884
885 /* get local endpoint addr */
886 sl = sizeof(struct sockaddr_in6);
887 memset(&(new->servaddr), 0, sl);
888 getsockname(sock, (struct sockaddr *) &(new->servaddr), &sl);
889
890 new->next = uh_clients;
891 uh_clients = new;
892 }
893
894 return new;
895 }
896
897 struct client * uh_client_lookup(int sock)
898 {
899 struct client *cur = NULL;
900
901 for( cur = uh_clients; cur; cur = cur->next )
902 if( cur->socket == sock )
903 return cur;
904
905 return NULL;
906 }
907
908 void uh_client_remove(int sock)
909 {
910 struct client *cur = NULL;
911 struct client *prv = NULL;
912
913 for( cur = uh_clients; cur; prv = cur, cur = cur->next )
914 {
915 if( cur->socket == sock )
916 {
917 if( prv )
918 prv->next = cur->next;
919 else
920 uh_clients = cur->next;
921
922 free(cur);
923 break;
924 }
925 }
926 }
927
928
929 #ifdef HAVE_CGI
930 static struct interpreter *uh_interpreters = NULL;
931
932 struct interpreter * uh_interpreter_add(const char *extn, const char *path)
933 {
934 struct interpreter *new = NULL;
935
936 if( (new = (struct interpreter *)
937 malloc(sizeof(struct interpreter))) != NULL )
938 {
939 memset(new, 0, sizeof(struct interpreter));
940
941 memcpy(new->extn, extn, min(strlen(extn), sizeof(new->extn)-1));
942 memcpy(new->path, path, min(strlen(path), sizeof(new->path)-1));
943
944 new->next = uh_interpreters;
945 uh_interpreters = new;
946
947 return new;
948 }
949
950 return NULL;
951 }
952
953 struct interpreter * uh_interpreter_lookup(const char *path)
954 {
955 struct interpreter *cur = NULL;
956 const char *e;
957
958 for( cur = uh_interpreters; cur; cur = cur->next )
959 {
960 e = &path[max(strlen(path) - strlen(cur->extn), 0)];
961
962 if( !strcmp(e, cur->extn) )
963 return cur;
964 }
965
966 return NULL;
967 }
968 #endif
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