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comparison src/core/ngx_inet.c @ 6683:b802b7e1d9bc

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Core: introduced ngx_cidr_match() function.
author Dmitry Volyntsev <xeioex@nginx.com>
date Wed, 07 Sep 2016 13:56:53 +0300
parents 0a820872dd4c
children 3f94a0fc05cf
comparison
equal deleted inserted replaced
6682:db422604ceb0 6683:b802b7e1d9bc
464 } 464 }
465 } 465 }
466 466
467 467
468 ngx_int_t 468 ngx_int_t
469 ngx_cidr_match(struct sockaddr *sa, ngx_array_t *cidrs)
470 {
471 #if (NGX_HAVE_INET6)
472 u_char *p;
473 #endif
474 in_addr_t inaddr;
475 ngx_cidr_t *cidr;
476 ngx_uint_t family, i;
477 #if (NGX_HAVE_INET6)
478 ngx_uint_t n;
479 struct in6_addr *inaddr6;
480 #endif
481
482 #if (NGX_SUPPRESS_WARN)
483 inaddr = 0;
484 #if (NGX_HAVE_INET6)
485 inaddr6 = NULL;
486 #endif
487 #endif
488
489 family = sa->sa_family;
490
491 if (family == AF_INET) {
492 inaddr = ((struct sockaddr_in *) sa)->sin_addr.s_addr;
493 }
494
495 #if (NGX_HAVE_INET6)
496 else if (family == AF_INET6) {
497 inaddr6 = &((struct sockaddr_in6 *) sa)->sin6_addr;
498
499 if (IN6_IS_ADDR_V4MAPPED(inaddr6)) {
500 family = AF_INET;
501
502 p = inaddr6->s6_addr;
503
504 inaddr = p[12] << 24;
505 inaddr += p[13] << 16;
506 inaddr += p[14] << 8;
507 inaddr += p[15];
508
509 inaddr = htonl(inaddr);
510 }
511 }
512 #endif
513
514 for (cidr = cidrs->elts, i = 0; i < cidrs->nelts; i++) {
515 if (cidr[i].family != family) {
516 goto next;
517 }
518
519 switch (family) {
520
521 #if (NGX_HAVE_INET6)
522 case AF_INET6:
523 for (n = 0; n < 16; n++) {
524 if ((inaddr6->s6_addr[n] & cidr[i].u.in6.mask.s6_addr[n])
525 != cidr[i].u.in6.addr.s6_addr[n])
526 {
527 goto next;
528 }
529 }
530 break;
531 #endif
532
533 #if (NGX_HAVE_UNIX_DOMAIN)
534 case AF_UNIX:
535 break;
536 #endif
537
538 default: /* AF_INET */
539 if ((inaddr & cidr[i].u.in.mask) != cidr[i].u.in.addr) {
540 goto next;
541 }
542 break;
543 }
544
545 return NGX_OK;
546
547 next:
548 continue;
549 }
550
551 return NGX_DECLINED;
552 }
553
554
555 ngx_int_t
469 ngx_parse_addr(ngx_pool_t *pool, ngx_addr_t *addr, u_char *text, size_t len) 556 ngx_parse_addr(ngx_pool_t *pool, ngx_addr_t *addr, u_char *text, size_t len)
470 { 557 {
471 in_addr_t inaddr; 558 in_addr_t inaddr;
472 ngx_uint_t family; 559 ngx_uint_t family;
473 struct sockaddr_in *sin; 560 struct sockaddr_in *sin;