| |
| /* |
| * Copyright (C) Igor Sysoev |
| * Copyright (C) Nginx, Inc. |
| */ |
| |
| |
| #include <ngx_config.h> |
| #include <ngx_core.h> |
| |
| |
| static ngx_int_t ngx_parse_unix_domain_url(ngx_pool_t *pool, ngx_url_t *u); |
| static ngx_int_t ngx_parse_inet_url(ngx_pool_t *pool, ngx_url_t *u); |
| static ngx_int_t ngx_parse_inet6_url(ngx_pool_t *pool, ngx_url_t *u); |
| static ngx_int_t ngx_inet_add_addr(ngx_pool_t *pool, ngx_url_t *u, |
| struct sockaddr *sockaddr, socklen_t socklen, ngx_uint_t total); |
| |
| |
| in_addr_t |
| ngx_inet_addr(u_char *text, size_t len) |
| { |
| u_char *p, c; |
| in_addr_t addr; |
| ngx_uint_t octet, n; |
| |
| addr = 0; |
| octet = 0; |
| n = 0; |
| |
| for (p = text; p < text + len; p++) { |
| c = *p; |
| |
| if (c >= '0' && c <= '9') { |
| octet = octet * 10 + (c - '0'); |
| |
| if (octet > 255) { |
| return INADDR_NONE; |
| } |
| |
| continue; |
| } |
| |
| if (c == '.') { |
| addr = (addr << 8) + octet; |
| octet = 0; |
| n++; |
| continue; |
| } |
| |
| return INADDR_NONE; |
| } |
| |
| if (n == 3) { |
| addr = (addr << 8) + octet; |
| return htonl(addr); |
| } |
| |
| return INADDR_NONE; |
| } |
| |
| |
| #if (NGX_HAVE_INET6) |
| |
| ngx_int_t |
| ngx_inet6_addr(u_char *p, size_t len, u_char *addr) |
| { |
| u_char c, *zero, *digit, *s, *d; |
| size_t len4; |
| ngx_uint_t n, nibbles, word; |
| |
| if (len == 0) { |
| return NGX_ERROR; |
| } |
| |
| zero = NULL; |
| digit = NULL; |
| len4 = 0; |
| nibbles = 0; |
| word = 0; |
| n = 8; |
| |
| if (p[0] == ':') { |
| p++; |
| len--; |
| } |
| |
| for (/* void */; len; len--) { |
| c = *p++; |
| |
| if (c == ':') { |
| if (nibbles) { |
| digit = p; |
| len4 = len; |
| *addr++ = (u_char) (word >> 8); |
| *addr++ = (u_char) (word & 0xff); |
| |
| if (--n) { |
| nibbles = 0; |
| word = 0; |
| continue; |
| } |
| |
| } else { |
| if (zero == NULL) { |
| digit = p; |
| len4 = len; |
| zero = addr; |
| continue; |
| } |
| } |
| |
| return NGX_ERROR; |
| } |
| |
| if (c == '.' && nibbles) { |
| if (n < 2 || digit == NULL) { |
| return NGX_ERROR; |
| } |
| |
| word = ngx_inet_addr(digit, len4 - 1); |
| if (word == INADDR_NONE) { |
| return NGX_ERROR; |
| } |
| |
| word = ntohl(word); |
| *addr++ = (u_char) ((word >> 24) & 0xff); |
| *addr++ = (u_char) ((word >> 16) & 0xff); |
| n--; |
| break; |
| } |
| |
| if (++nibbles > 4) { |
| return NGX_ERROR; |
| } |
| |
| if (c >= '0' && c <= '9') { |
| word = word * 16 + (c - '0'); |
| continue; |
| } |
| |
| c |= 0x20; |
| |
| if (c >= 'a' && c <= 'f') { |
| word = word * 16 + (c - 'a') + 10; |
| continue; |
| } |
| |
| return NGX_ERROR; |
| } |
| |
| if (nibbles == 0 && zero == NULL) { |
| return NGX_ERROR; |
| } |
| |
| *addr++ = (u_char) (word >> 8); |
| *addr++ = (u_char) (word & 0xff); |
| |
| if (--n) { |
| if (zero) { |
| n *= 2; |
| s = addr - 1; |
| d = s + n; |
| while (s >= zero) { |
| *d-- = *s--; |
| } |
| ngx_memzero(zero, n); |
| return NGX_OK; |
| } |
| |
| } else { |
| if (zero == NULL) { |
| return NGX_OK; |
| } |
| } |
| |
| return NGX_ERROR; |
| } |
| |
| #endif |
| |
| |
| size_t |
| ngx_sock_ntop(struct sockaddr *sa, socklen_t socklen, u_char *text, size_t len, |
| ngx_uint_t port) |
| { |
| u_char *p; |
| #if (NGX_HAVE_INET6 || NGX_HAVE_UNIX_DOMAIN) |
| size_t n; |
| #endif |
| struct sockaddr_in *sin; |
| #if (NGX_HAVE_INET6) |
| struct sockaddr_in6 *sin6; |
| #endif |
| #if (NGX_HAVE_UNIX_DOMAIN) |
| struct sockaddr_un *saun; |
| #endif |
| |
| switch (sa->sa_family) { |
| |
| case AF_INET: |
| |
| sin = (struct sockaddr_in *) sa; |
| p = (u_char *) &sin->sin_addr; |
| |
| if (port) { |
| p = ngx_snprintf(text, len, "%ud.%ud.%ud.%ud:%d", |
| p[0], p[1], p[2], p[3], ntohs(sin->sin_port)); |
| } else { |
| p = ngx_snprintf(text, len, "%ud.%ud.%ud.%ud", |
| p[0], p[1], p[2], p[3]); |
| } |
| |
| return (p - text); |
| |
| #if (NGX_HAVE_INET6) |
| |
| case AF_INET6: |
| |
| sin6 = (struct sockaddr_in6 *) sa; |
| |
| n = 0; |
| |
| if (port) { |
| text[n++] = '['; |
| } |
| |
| n = ngx_inet6_ntop(sin6->sin6_addr.s6_addr, &text[n], len); |
| |
| if (port) { |
| n = ngx_sprintf(&text[1 + n], "]:%d", |
| ntohs(sin6->sin6_port)) - text; |
| } |
| |
| return n; |
| #endif |
| |
| #if (NGX_HAVE_UNIX_DOMAIN) |
| |
| case AF_UNIX: |
| saun = (struct sockaddr_un *) sa; |
| |
| /* on Linux sockaddr might not include sun_path at all */ |
| |
| if (socklen <= (socklen_t) offsetof(struct sockaddr_un, sun_path)) { |
| p = ngx_snprintf(text, len, "unix:%Z"); |
| |
| } else { |
| n = ngx_strnlen((u_char *) saun->sun_path, |
| socklen - offsetof(struct sockaddr_un, sun_path)); |
| p = ngx_snprintf(text, len, "unix:%*s%Z", n, saun->sun_path); |
| } |
| |
| /* we do not include trailing zero in address length */ |
| |
| return (p - text - 1); |
| |
| #endif |
| |
| default: |
| return 0; |
| } |
| } |
| |
| |
| size_t |
| ngx_inet_ntop(int family, void *addr, u_char *text, size_t len) |
| { |
| u_char *p; |
| |
| switch (family) { |
| |
| case AF_INET: |
| |
| p = addr; |
| |
| return ngx_snprintf(text, len, "%ud.%ud.%ud.%ud", |
| p[0], p[1], p[2], p[3]) |
| - text; |
| |
| #if (NGX_HAVE_INET6) |
| |
| case AF_INET6: |
| return ngx_inet6_ntop(addr, text, len); |
| |
| #endif |
| |
| default: |
| return 0; |
| } |
| } |
| |
| |
| #if (NGX_HAVE_INET6) |
| |
| size_t |
| ngx_inet6_ntop(u_char *p, u_char *text, size_t len) |
| { |
| u_char *dst; |
| size_t max, n; |
| ngx_uint_t i, zero, last; |
| |
| if (len < NGX_INET6_ADDRSTRLEN) { |
| return 0; |
| } |
| |
| zero = (ngx_uint_t) -1; |
| last = (ngx_uint_t) -1; |
| max = 1; |
| n = 0; |
| |
| for (i = 0; i < 16; i += 2) { |
| |
| if (p[i] || p[i + 1]) { |
| |
| if (max < n) { |
| zero = last; |
| max = n; |
| } |
| |
| n = 0; |
| continue; |
| } |
| |
| if (n++ == 0) { |
| last = i; |
| } |
| } |
| |
| if (max < n) { |
| zero = last; |
| max = n; |
| } |
| |
| dst = text; |
| n = 16; |
| |
| if (zero == 0) { |
| |
| if ((max == 5 && p[10] == 0xff && p[11] == 0xff) |
| || (max == 6) |
| || (max == 7 && p[14] != 0 && p[15] != 1)) |
| { |
| n = 12; |
| } |
| |
| *dst++ = ':'; |
| } |
| |
| for (i = 0; i < n; i += 2) { |
| |
| if (i == zero) { |
| *dst++ = ':'; |
| i += (max - 1) * 2; |
| continue; |
| } |
| |
| dst = ngx_sprintf(dst, "%xd", p[i] * 256 + p[i + 1]); |
| |
| if (i < 14) { |
| *dst++ = ':'; |
| } |
| } |
| |
| if (n == 12) { |
| dst = ngx_sprintf(dst, "%ud.%ud.%ud.%ud", p[12], p[13], p[14], p[15]); |
| } |
| |
| return dst - text; |
| } |
| |
| #endif |
| |
| |
| ngx_int_t |
| ngx_ptocidr(ngx_str_t *text, ngx_cidr_t *cidr) |
| { |
| u_char *addr, *mask, *last; |
| size_t len; |
| ngx_int_t shift; |
| #if (NGX_HAVE_INET6) |
| ngx_int_t rc; |
| ngx_uint_t s, i; |
| #endif |
| |
| addr = text->data; |
| last = addr + text->len; |
| |
| mask = ngx_strlchr(addr, last, '/'); |
| len = (mask ? mask : last) - addr; |
| |
| cidr->u.in.addr = ngx_inet_addr(addr, len); |
| |
| if (cidr->u.in.addr != INADDR_NONE) { |
| cidr->family = AF_INET; |
| |
| if (mask == NULL) { |
| cidr->u.in.mask = 0xffffffff; |
| return NGX_OK; |
| } |
| |
| #if (NGX_HAVE_INET6) |
| } else if (ngx_inet6_addr(addr, len, cidr->u.in6.addr.s6_addr) == NGX_OK) { |
| cidr->family = AF_INET6; |
| |
| if (mask == NULL) { |
| ngx_memset(cidr->u.in6.mask.s6_addr, 0xff, 16); |
| return NGX_OK; |
| } |
| |
| #endif |
| } else { |
| return NGX_ERROR; |
| } |
| |
| mask++; |
| |
| shift = ngx_atoi(mask, last - mask); |
| if (shift == NGX_ERROR) { |
| return NGX_ERROR; |
| } |
| |
| switch (cidr->family) { |
| |
| #if (NGX_HAVE_INET6) |
| case AF_INET6: |
| if (shift > 128) { |
| return NGX_ERROR; |
| } |
| |
| addr = cidr->u.in6.addr.s6_addr; |
| mask = cidr->u.in6.mask.s6_addr; |
| rc = NGX_OK; |
| |
| for (i = 0; i < 16; i++) { |
| |
| s = (shift > 8) ? 8 : shift; |
| shift -= s; |
| |
| mask[i] = (u_char) (0xffu << (8 - s)); |
| |
| if (addr[i] != (addr[i] & mask[i])) { |
| rc = NGX_DONE; |
| addr[i] &= mask[i]; |
| } |
| } |
| |
| return rc; |
| #endif |
| |
| default: /* AF_INET */ |
| if (shift > 32) { |
| return NGX_ERROR; |
| } |
| |
| if (shift) { |
| cidr->u.in.mask = htonl((uint32_t) (0xffffffffu << (32 - shift))); |
| |
| } else { |
| /* x86 compilers use a shl instruction that shifts by modulo 32 */ |
| cidr->u.in.mask = 0; |
| } |
| |
| if (cidr->u.in.addr == (cidr->u.in.addr & cidr->u.in.mask)) { |
| return NGX_OK; |
| } |
| |
| cidr->u.in.addr &= cidr->u.in.mask; |
| |
| return NGX_DONE; |
| } |
| } |
| |
| |
| ngx_int_t |
| ngx_cidr_match(struct sockaddr *sa, ngx_array_t *cidrs) |
| { |
| #if (NGX_HAVE_INET6) |
| u_char *p; |
| #endif |
| in_addr_t inaddr; |
| ngx_cidr_t *cidr; |
| ngx_uint_t family, i; |
| #if (NGX_HAVE_INET6) |
| ngx_uint_t n; |
| struct in6_addr *inaddr6; |
| #endif |
| |
| #if (NGX_SUPPRESS_WARN) |
| inaddr = 0; |
| #if (NGX_HAVE_INET6) |
| inaddr6 = NULL; |
| #endif |
| #endif |
| |
| family = sa->sa_family; |
| |
| if (family == AF_INET) { |
| inaddr = ((struct sockaddr_in *) sa)->sin_addr.s_addr; |
| } |
| |
| #if (NGX_HAVE_INET6) |
| else if (family == AF_INET6) { |
| inaddr6 = &((struct sockaddr_in6 *) sa)->sin6_addr; |
| |
| if (IN6_IS_ADDR_V4MAPPED(inaddr6)) { |
| family = AF_INET; |
| |
| p = inaddr6->s6_addr; |
| |
| inaddr = p[12] << 24; |
| inaddr += p[13] << 16; |
| inaddr += p[14] << 8; |
| inaddr += p[15]; |
| |
| inaddr = htonl(inaddr); |
| } |
| } |
| #endif |
| |
| for (cidr = cidrs->elts, i = 0; i < cidrs->nelts; i++) { |
| if (cidr[i].family != family) { |
| goto next; |
| } |
| |
| switch (family) { |
| |
| #if (NGX_HAVE_INET6) |
| case AF_INET6: |
| for (n = 0; n < 16; n++) { |
| if ((inaddr6->s6_addr[n] & cidr[i].u.in6.mask.s6_addr[n]) |
| != cidr[i].u.in6.addr.s6_addr[n]) |
| { |
| goto next; |
| } |
| } |
| break; |
| #endif |
| |
| #if (NGX_HAVE_UNIX_DOMAIN) |
| case AF_UNIX: |
| break; |
| #endif |
| |
| default: /* AF_INET */ |
| if ((inaddr & cidr[i].u.in.mask) != cidr[i].u.in.addr) { |
| goto next; |
| } |
| break; |
| } |
| |
| return NGX_OK; |
| |
| next: |
| continue; |
| } |
| |
| return NGX_DECLINED; |
| } |
| |
| |
| ngx_int_t |
| ngx_parse_addr(ngx_pool_t *pool, ngx_addr_t *addr, u_char *text, size_t len) |
| { |
| in_addr_t inaddr; |
| ngx_uint_t family; |
| struct sockaddr_in *sin; |
| #if (NGX_HAVE_INET6) |
| struct in6_addr inaddr6; |
| struct sockaddr_in6 *sin6; |
| |
| /* |
| * prevent MSVC8 warning: |
| * potentially uninitialized local variable 'inaddr6' used |
| */ |
| ngx_memzero(&inaddr6, sizeof(struct in6_addr)); |
| #endif |
| |
| inaddr = ngx_inet_addr(text, len); |
| |
| if (inaddr != INADDR_NONE) { |
| family = AF_INET; |
| len = sizeof(struct sockaddr_in); |
| |
| #if (NGX_HAVE_INET6) |
| } else if (ngx_inet6_addr(text, len, inaddr6.s6_addr) == NGX_OK) { |
| family = AF_INET6; |
| len = sizeof(struct sockaddr_in6); |
| |
| #endif |
| } else { |
| return NGX_DECLINED; |
| } |
| |
| addr->sockaddr = ngx_pcalloc(pool, len); |
| if (addr->sockaddr == NULL) { |
| return NGX_ERROR; |
| } |
| |
| addr->sockaddr->sa_family = (u_char) family; |
| addr->socklen = len; |
| |
| switch (family) { |
| |
| #if (NGX_HAVE_INET6) |
| case AF_INET6: |
| sin6 = (struct sockaddr_in6 *) addr->sockaddr; |
| ngx_memcpy(sin6->sin6_addr.s6_addr, inaddr6.s6_addr, 16); |
| break; |
| #endif |
| |
| default: /* AF_INET */ |
| sin = (struct sockaddr_in *) addr->sockaddr; |
| sin->sin_addr.s_addr = inaddr; |
| break; |
| } |
| |
| return NGX_OK; |
| } |
| |
| |
| ngx_int_t |
| ngx_parse_addr_port(ngx_pool_t *pool, ngx_addr_t *addr, u_char *text, |
| size_t len) |
| { |
| u_char *p, *last; |
| size_t plen; |
| ngx_int_t rc, port; |
| |
| rc = ngx_parse_addr(pool, addr, text, len); |
| |
| if (rc != NGX_DECLINED) { |
| return rc; |
| } |
| |
| last = text + len; |
| |
| #if (NGX_HAVE_INET6) |
| if (len && text[0] == '[') { |
| |
| p = ngx_strlchr(text, last, ']'); |
| |
| if (p == NULL || p == last - 1 || *++p != ':') { |
| return NGX_DECLINED; |
| } |
| |
| text++; |
| len -= 2; |
| |
| } else |
| #endif |
| |
| { |
| p = ngx_strlchr(text, last, ':'); |
| |
| if (p == NULL) { |
| return NGX_DECLINED; |
| } |
| } |
| |
| p++; |
| plen = last - p; |
| |
| port = ngx_atoi(p, plen); |
| |
| if (port < 1 || port > 65535) { |
| return NGX_DECLINED; |
| } |
| |
| len -= plen + 1; |
| |
| rc = ngx_parse_addr(pool, addr, text, len); |
| |
| if (rc != NGX_OK) { |
| return rc; |
| } |
| |
| ngx_inet_set_port(addr->sockaddr, (in_port_t) port); |
| |
| return NGX_OK; |
| } |
| |
| |
| ngx_int_t |
| ngx_parse_url(ngx_pool_t *pool, ngx_url_t *u) |
| { |
| u_char *p; |
| size_t len; |
| |
| p = u->url.data; |
| len = u->url.len; |
| |
| if (len >= 5 && ngx_strncasecmp(p, (u_char *) "unix:", 5) == 0) { |
| return ngx_parse_unix_domain_url(pool, u); |
| } |
| |
| if (len && p[0] == '[') { |
| return ngx_parse_inet6_url(pool, u); |
| } |
| |
| return ngx_parse_inet_url(pool, u); |
| } |
| |
| |
| static ngx_int_t |
| ngx_parse_unix_domain_url(ngx_pool_t *pool, ngx_url_t *u) |
| { |
| #if (NGX_HAVE_UNIX_DOMAIN) |
| u_char *path, *uri, *last; |
| size_t len; |
| struct sockaddr_un *saun; |
| |
| len = u->url.len; |
| path = u->url.data; |
| |
| path += 5; |
| len -= 5; |
| |
| if (u->uri_part) { |
| |
| last = path + len; |
| uri = ngx_strlchr(path, last, ':'); |
| |
| if (uri) { |
| len = uri - path; |
| uri++; |
| u->uri.len = last - uri; |
| u->uri.data = uri; |
| } |
| } |
| |
| if (len == 0) { |
| u->err = "no path in the unix domain socket"; |
| return NGX_ERROR; |
| } |
| |
| u->host.len = len++; |
| u->host.data = path; |
| |
| if (len > sizeof(saun->sun_path)) { |
| u->err = "too long path in the unix domain socket"; |
| return NGX_ERROR; |
| } |
| |
| u->socklen = sizeof(struct sockaddr_un); |
| saun = (struct sockaddr_un *) &u->sockaddr; |
| saun->sun_family = AF_UNIX; |
| (void) ngx_cpystrn((u_char *) saun->sun_path, path, len); |
| |
| u->addrs = ngx_pcalloc(pool, sizeof(ngx_addr_t)); |
| if (u->addrs == NULL) { |
| return NGX_ERROR; |
| } |
| |
| saun = ngx_pcalloc(pool, sizeof(struct sockaddr_un)); |
| if (saun == NULL) { |
| return NGX_ERROR; |
| } |
| |
| u->family = AF_UNIX; |
| u->naddrs = 1; |
| |
| saun->sun_family = AF_UNIX; |
| (void) ngx_cpystrn((u_char *) saun->sun_path, path, len); |
| |
| u->addrs[0].sockaddr = (struct sockaddr *) saun; |
| u->addrs[0].socklen = sizeof(struct sockaddr_un); |
| u->addrs[0].name.len = len + 4; |
| u->addrs[0].name.data = u->url.data; |
| |
| return NGX_OK; |
| |
| #else |
| |
| u->err = "the unix domain sockets are not supported on this platform"; |
| |
| return NGX_ERROR; |
| |
| #endif |
| } |
| |
| |
| static ngx_int_t |
| ngx_parse_inet_url(ngx_pool_t *pool, ngx_url_t *u) |
| { |
| u_char *host, *port, *last, *uri, *args, *dash; |
| size_t len; |
| ngx_int_t n; |
| struct sockaddr_in *sin; |
| |
| u->socklen = sizeof(struct sockaddr_in); |
| sin = (struct sockaddr_in *) &u->sockaddr; |
| sin->sin_family = AF_INET; |
| |
| u->family = AF_INET; |
| |
| host = u->url.data; |
| |
| last = host + u->url.len; |
| |
| port = ngx_strlchr(host, last, ':'); |
| |
| uri = ngx_strlchr(host, last, '/'); |
| |
| args = ngx_strlchr(host, last, '?'); |
| |
| if (args) { |
| if (uri == NULL || args < uri) { |
| uri = args; |
| } |
| } |
| |
| if (uri) { |
| if (u->listen || !u->uri_part) { |
| u->err = "invalid host"; |
| return NGX_ERROR; |
| } |
| |
| u->uri.len = last - uri; |
| u->uri.data = uri; |
| |
| last = uri; |
| |
| if (uri < port) { |
| port = NULL; |
| } |
| } |
| |
| if (port) { |
| port++; |
| |
| len = last - port; |
| |
| if (u->listen) { |
| dash = ngx_strlchr(port, last, '-'); |
| |
| if (dash) { |
| dash++; |
| |
| n = ngx_atoi(dash, last - dash); |
| |
| if (n < 1 || n > 65535) { |
| u->err = "invalid port"; |
| return NGX_ERROR; |
| } |
| |
| u->last_port = (in_port_t) n; |
| |
| len = dash - port - 1; |
| } |
| } |
| |
| n = ngx_atoi(port, len); |
| |
| if (n < 1 || n > 65535) { |
| u->err = "invalid port"; |
| return NGX_ERROR; |
| } |
| |
| if (u->last_port && n > u->last_port) { |
| u->err = "invalid port range"; |
| return NGX_ERROR; |
| } |
| |
| u->port = (in_port_t) n; |
| sin->sin_port = htons((in_port_t) n); |
| |
| u->port_text.len = last - port; |
| u->port_text.data = port; |
| |
| last = port - 1; |
| |
| } else { |
| if (uri == NULL) { |
| |
| if (u->listen) { |
| |
| /* test value as port only */ |
| |
| len = last - host; |
| |
| dash = ngx_strlchr(host, last, '-'); |
| |
| if (dash) { |
| dash++; |
| |
| n = ngx_atoi(dash, last - dash); |
| |
| if (n == NGX_ERROR) { |
| goto no_port; |
| } |
| |
| if (n < 1 || n > 65535) { |
| u->err = "invalid port"; |
| |
| } else { |
| u->last_port = (in_port_t) n; |
| } |
| |
| len = dash - host - 1; |
| } |
| |
| n = ngx_atoi(host, len); |
| |
| if (n != NGX_ERROR) { |
| |
| if (u->err) { |
| return NGX_ERROR; |
| } |
| |
| if (n < 1 || n > 65535) { |
| u->err = "invalid port"; |
| return NGX_ERROR; |
| } |
| |
| if (u->last_port && n > u->last_port) { |
| u->err = "invalid port range"; |
| return NGX_ERROR; |
| } |
| |
| u->port = (in_port_t) n; |
| sin->sin_port = htons((in_port_t) n); |
| sin->sin_addr.s_addr = INADDR_ANY; |
| |
| u->port_text.len = last - host; |
| u->port_text.data = host; |
| |
| u->wildcard = 1; |
| |
| return ngx_inet_add_addr(pool, u, &u->sockaddr.sockaddr, |
| u->socklen, 1); |
| } |
| } |
| } |
| |
| no_port: |
| |
| u->err = NULL; |
| u->no_port = 1; |
| u->port = u->default_port; |
| sin->sin_port = htons(u->default_port); |
| u->last_port = 0; |
| } |
| |
| len = last - host; |
| |
| if (len == 0) { |
| u->err = "no host"; |
| return NGX_ERROR; |
| } |
| |
| u->host.len = len; |
| u->host.data = host; |
| |
| if (u->listen && len == 1 && *host == '*') { |
| sin->sin_addr.s_addr = INADDR_ANY; |
| u->wildcard = 1; |
| return ngx_inet_add_addr(pool, u, &u->sockaddr.sockaddr, u->socklen, 1); |
| } |
| |
| sin->sin_addr.s_addr = ngx_inet_addr(host, len); |
| |
| if (sin->sin_addr.s_addr != INADDR_NONE) { |
| |
| if (sin->sin_addr.s_addr == INADDR_ANY) { |
| u->wildcard = 1; |
| } |
| |
| return ngx_inet_add_addr(pool, u, &u->sockaddr.sockaddr, u->socklen, 1); |
| } |
| |
| if (u->no_resolve) { |
| return NGX_OK; |
| } |
| |
| if (ngx_inet_resolve_host(pool, u) != NGX_OK) { |
| return NGX_ERROR; |
| } |
| |
| u->family = u->addrs[0].sockaddr->sa_family; |
| u->socklen = u->addrs[0].socklen; |
| ngx_memcpy(&u->sockaddr, u->addrs[0].sockaddr, u->addrs[0].socklen); |
| u->wildcard = ngx_inet_wildcard(&u->sockaddr.sockaddr); |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_parse_inet6_url(ngx_pool_t *pool, ngx_url_t *u) |
| { |
| #if (NGX_HAVE_INET6) |
| u_char *p, *host, *port, *last, *uri, *dash; |
| size_t len; |
| ngx_int_t n; |
| struct sockaddr_in6 *sin6; |
| |
| u->socklen = sizeof(struct sockaddr_in6); |
| sin6 = (struct sockaddr_in6 *) &u->sockaddr; |
| sin6->sin6_family = AF_INET6; |
| |
| host = u->url.data + 1; |
| |
| last = u->url.data + u->url.len; |
| |
| p = ngx_strlchr(host, last, ']'); |
| |
| if (p == NULL) { |
| u->err = "invalid host"; |
| return NGX_ERROR; |
| } |
| |
| port = p + 1; |
| |
| uri = ngx_strlchr(port, last, '/'); |
| |
| if (uri) { |
| if (u->listen || !u->uri_part) { |
| u->err = "invalid host"; |
| return NGX_ERROR; |
| } |
| |
| u->uri.len = last - uri; |
| u->uri.data = uri; |
| |
| last = uri; |
| } |
| |
| if (port < last) { |
| if (*port != ':') { |
| u->err = "invalid host"; |
| return NGX_ERROR; |
| } |
| |
| port++; |
| |
| len = last - port; |
| |
| if (u->listen) { |
| dash = ngx_strlchr(port, last, '-'); |
| |
| if (dash) { |
| dash++; |
| |
| n = ngx_atoi(dash, last - dash); |
| |
| if (n < 1 || n > 65535) { |
| u->err = "invalid port"; |
| return NGX_ERROR; |
| } |
| |
| u->last_port = (in_port_t) n; |
| |
| len = dash - port - 1; |
| } |
| } |
| |
| n = ngx_atoi(port, len); |
| |
| if (n < 1 || n > 65535) { |
| u->err = "invalid port"; |
| return NGX_ERROR; |
| } |
| |
| if (u->last_port && n > u->last_port) { |
| u->err = "invalid port range"; |
| return NGX_ERROR; |
| } |
| |
| u->port = (in_port_t) n; |
| sin6->sin6_port = htons((in_port_t) n); |
| |
| u->port_text.len = last - port; |
| u->port_text.data = port; |
| |
| } else { |
| u->no_port = 1; |
| u->port = u->default_port; |
| sin6->sin6_port = htons(u->default_port); |
| } |
| |
| len = p - host; |
| |
| if (len == 0) { |
| u->err = "no host"; |
| return NGX_ERROR; |
| } |
| |
| u->host.len = len + 2; |
| u->host.data = host - 1; |
| |
| if (ngx_inet6_addr(host, len, sin6->sin6_addr.s6_addr) != NGX_OK) { |
| u->err = "invalid IPv6 address"; |
| return NGX_ERROR; |
| } |
| |
| if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { |
| u->wildcard = 1; |
| } |
| |
| u->family = AF_INET6; |
| |
| return ngx_inet_add_addr(pool, u, &u->sockaddr.sockaddr, u->socklen, 1); |
| |
| #else |
| |
| u->err = "the INET6 sockets are not supported on this platform"; |
| |
| return NGX_ERROR; |
| |
| #endif |
| } |
| |
| |
| #if (NGX_HAVE_GETADDRINFO && NGX_HAVE_INET6) |
| |
| ngx_int_t |
| ngx_inet_resolve_host(ngx_pool_t *pool, ngx_url_t *u) |
| { |
| u_char *host; |
| ngx_uint_t n; |
| struct addrinfo hints, *res, *rp; |
| |
| host = ngx_alloc(u->host.len + 1, pool->log); |
| if (host == NULL) { |
| return NGX_ERROR; |
| } |
| |
| (void) ngx_cpystrn(host, u->host.data, u->host.len + 1); |
| |
| ngx_memzero(&hints, sizeof(struct addrinfo)); |
| hints.ai_family = AF_UNSPEC; |
| hints.ai_socktype = SOCK_STREAM; |
| #ifdef AI_ADDRCONFIG |
| hints.ai_flags = AI_ADDRCONFIG; |
| #endif |
| |
| if (getaddrinfo((char *) host, NULL, &hints, &res) != 0) { |
| u->err = "host not found"; |
| ngx_free(host); |
| return NGX_ERROR; |
| } |
| |
| ngx_free(host); |
| |
| for (n = 0, rp = res; rp != NULL; rp = rp->ai_next) { |
| |
| switch (rp->ai_family) { |
| |
| case AF_INET: |
| case AF_INET6: |
| break; |
| |
| default: |
| continue; |
| } |
| |
| n++; |
| } |
| |
| if (n == 0) { |
| u->err = "host not found"; |
| goto failed; |
| } |
| |
| /* MP: ngx_shared_palloc() */ |
| |
| for (rp = res; rp != NULL; rp = rp->ai_next) { |
| |
| switch (rp->ai_family) { |
| |
| case AF_INET: |
| case AF_INET6: |
| break; |
| |
| default: |
| continue; |
| } |
| |
| if (ngx_inet_add_addr(pool, u, rp->ai_addr, rp->ai_addrlen, n) |
| != NGX_OK) |
| { |
| goto failed; |
| } |
| } |
| |
| freeaddrinfo(res); |
| return NGX_OK; |
| |
| failed: |
| |
| freeaddrinfo(res); |
| return NGX_ERROR; |
| } |
| |
| #else /* !NGX_HAVE_GETADDRINFO || !NGX_HAVE_INET6 */ |
| |
| ngx_int_t |
| ngx_inet_resolve_host(ngx_pool_t *pool, ngx_url_t *u) |
| { |
| u_char *host; |
| ngx_uint_t i, n; |
| struct hostent *h; |
| struct sockaddr_in sin; |
| |
| /* AF_INET only */ |
| |
| ngx_memzero(&sin, sizeof(struct sockaddr_in)); |
| |
| sin.sin_family = AF_INET; |
| sin.sin_addr.s_addr = ngx_inet_addr(u->host.data, u->host.len); |
| |
| if (sin.sin_addr.s_addr == INADDR_NONE) { |
| host = ngx_alloc(u->host.len + 1, pool->log); |
| if (host == NULL) { |
| return NGX_ERROR; |
| } |
| |
| (void) ngx_cpystrn(host, u->host.data, u->host.len + 1); |
| |
| h = gethostbyname((char *) host); |
| |
| ngx_free(host); |
| |
| if (h == NULL || h->h_addr_list[0] == NULL) { |
| u->err = "host not found"; |
| return NGX_ERROR; |
| } |
| |
| for (n = 0; h->h_addr_list[n] != NULL; n++) { /* void */ } |
| |
| /* MP: ngx_shared_palloc() */ |
| |
| for (i = 0; i < n; i++) { |
| sin.sin_addr.s_addr = *(in_addr_t *) (h->h_addr_list[i]); |
| |
| if (ngx_inet_add_addr(pool, u, (struct sockaddr *) &sin, |
| sizeof(struct sockaddr_in), n) |
| != NGX_OK) |
| { |
| return NGX_ERROR; |
| } |
| } |
| |
| } else { |
| |
| /* MP: ngx_shared_palloc() */ |
| |
| if (ngx_inet_add_addr(pool, u, (struct sockaddr *) &sin, |
| sizeof(struct sockaddr_in), 1) |
| != NGX_OK) |
| { |
| return NGX_ERROR; |
| } |
| } |
| |
| return NGX_OK; |
| } |
| |
| #endif /* NGX_HAVE_GETADDRINFO && NGX_HAVE_INET6 */ |
| |
| |
| static ngx_int_t |
| ngx_inet_add_addr(ngx_pool_t *pool, ngx_url_t *u, struct sockaddr *sockaddr, |
| socklen_t socklen, ngx_uint_t total) |
| { |
| u_char *p; |
| size_t len; |
| ngx_uint_t i, nports; |
| ngx_addr_t *addr; |
| struct sockaddr *sa; |
| |
| nports = u->last_port ? u->last_port - u->port + 1 : 1; |
| |
| if (u->addrs == NULL) { |
| u->addrs = ngx_palloc(pool, total * nports * sizeof(ngx_addr_t)); |
| if (u->addrs == NULL) { |
| return NGX_ERROR; |
| } |
| } |
| |
| for (i = 0; i < nports; i++) { |
| sa = ngx_pcalloc(pool, socklen); |
| if (sa == NULL) { |
| return NGX_ERROR; |
| } |
| |
| ngx_memcpy(sa, sockaddr, socklen); |
| |
| ngx_inet_set_port(sa, u->port + i); |
| |
| switch (sa->sa_family) { |
| |
| #if (NGX_HAVE_INET6) |
| case AF_INET6: |
| len = NGX_INET6_ADDRSTRLEN + sizeof("[]:65536") - 1; |
| break; |
| #endif |
| |
| default: /* AF_INET */ |
| len = NGX_INET_ADDRSTRLEN + sizeof(":65535") - 1; |
| } |
| |
| p = ngx_pnalloc(pool, len); |
| if (p == NULL) { |
| return NGX_ERROR; |
| } |
| |
| len = ngx_sock_ntop(sa, socklen, p, len, 1); |
| |
| addr = &u->addrs[u->naddrs++]; |
| |
| addr->sockaddr = sa; |
| addr->socklen = socklen; |
| |
| addr->name.len = len; |
| addr->name.data = p; |
| } |
| |
| return NGX_OK; |
| } |
| |
| |
| ngx_int_t |
| ngx_cmp_sockaddr(struct sockaddr *sa1, socklen_t slen1, |
| struct sockaddr *sa2, socklen_t slen2, ngx_uint_t cmp_port) |
| { |
| struct sockaddr_in *sin1, *sin2; |
| #if (NGX_HAVE_INET6) |
| struct sockaddr_in6 *sin61, *sin62; |
| #endif |
| #if (NGX_HAVE_UNIX_DOMAIN) |
| size_t len; |
| struct sockaddr_un *saun1, *saun2; |
| #endif |
| |
| if (sa1->sa_family != sa2->sa_family) { |
| return NGX_DECLINED; |
| } |
| |
| switch (sa1->sa_family) { |
| |
| #if (NGX_HAVE_INET6) |
| case AF_INET6: |
| |
| sin61 = (struct sockaddr_in6 *) sa1; |
| sin62 = (struct sockaddr_in6 *) sa2; |
| |
| if (cmp_port && sin61->sin6_port != sin62->sin6_port) { |
| return NGX_DECLINED; |
| } |
| |
| if (ngx_memcmp(&sin61->sin6_addr, &sin62->sin6_addr, 16) != 0) { |
| return NGX_DECLINED; |
| } |
| |
| break; |
| #endif |
| |
| #if (NGX_HAVE_UNIX_DOMAIN) |
| case AF_UNIX: |
| |
| saun1 = (struct sockaddr_un *) sa1; |
| saun2 = (struct sockaddr_un *) sa2; |
| |
| if (slen1 < slen2) { |
| len = slen1 - offsetof(struct sockaddr_un, sun_path); |
| |
| } else { |
| len = slen2 - offsetof(struct sockaddr_un, sun_path); |
| } |
| |
| if (len > sizeof(saun1->sun_path)) { |
| len = sizeof(saun1->sun_path); |
| } |
| |
| if (ngx_memcmp(&saun1->sun_path, &saun2->sun_path, len) != 0) { |
| return NGX_DECLINED; |
| } |
| |
| break; |
| #endif |
| |
| default: /* AF_INET */ |
| |
| sin1 = (struct sockaddr_in *) sa1; |
| sin2 = (struct sockaddr_in *) sa2; |
| |
| if (cmp_port && sin1->sin_port != sin2->sin_port) { |
| return NGX_DECLINED; |
| } |
| |
| if (sin1->sin_addr.s_addr != sin2->sin_addr.s_addr) { |
| return NGX_DECLINED; |
| } |
| |
| break; |
| } |
| |
| return NGX_OK; |
| } |
| |
| |
| in_port_t |
| ngx_inet_get_port(struct sockaddr *sa) |
| { |
| struct sockaddr_in *sin; |
| #if (NGX_HAVE_INET6) |
| struct sockaddr_in6 *sin6; |
| #endif |
| |
| switch (sa->sa_family) { |
| |
| #if (NGX_HAVE_INET6) |
| case AF_INET6: |
| sin6 = (struct sockaddr_in6 *) sa; |
| return ntohs(sin6->sin6_port); |
| #endif |
| |
| #if (NGX_HAVE_UNIX_DOMAIN) |
| case AF_UNIX: |
| return 0; |
| #endif |
| |
| default: /* AF_INET */ |
| sin = (struct sockaddr_in *) sa; |
| return ntohs(sin->sin_port); |
| } |
| } |
| |
| |
| void |
| ngx_inet_set_port(struct sockaddr *sa, in_port_t port) |
| { |
| struct sockaddr_in *sin; |
| #if (NGX_HAVE_INET6) |
| struct sockaddr_in6 *sin6; |
| #endif |
| |
| switch (sa->sa_family) { |
| |
| #if (NGX_HAVE_INET6) |
| case AF_INET6: |
| sin6 = (struct sockaddr_in6 *) sa; |
| sin6->sin6_port = htons(port); |
| break; |
| #endif |
| |
| #if (NGX_HAVE_UNIX_DOMAIN) |
| case AF_UNIX: |
| break; |
| #endif |
| |
| default: /* AF_INET */ |
| sin = (struct sockaddr_in *) sa; |
| sin->sin_port = htons(port); |
| break; |
| } |
| } |
| |
| |
| ngx_uint_t |
| ngx_inet_wildcard(struct sockaddr *sa) |
| { |
| struct sockaddr_in *sin; |
| #if (NGX_HAVE_INET6) |
| struct sockaddr_in6 *sin6; |
| #endif |
| |
| switch (sa->sa_family) { |
| |
| case AF_INET: |
| sin = (struct sockaddr_in *) sa; |
| |
| if (sin->sin_addr.s_addr == INADDR_ANY) { |
| return 1; |
| } |
| |
| break; |
| |
| #if (NGX_HAVE_INET6) |
| |
| case AF_INET6: |
| sin6 = (struct sockaddr_in6 *) sa; |
| |
| if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { |
| return 1; |
| } |
| |
| break; |
| |
| #endif |
| } |
| |
| return 0; |
| } |
