blob: 4c180361d6a4506714f75220781c469934479a4e [file] [log] [blame]
/*
* Copyright (C) Igor Sysoev
*/
#include <ngx_config.h>
#include <ngx_core.h>
#if (NGX_HAVE_INET6)
static size_t ngx_inet6_ntop(u_char *p, u_char *text, size_t len);
#endif
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);
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');
continue;
}
if (c == '.' && octet < 256) {
addr = (addr << 8) + octet;
octet = 0;
n++;
continue;
}
return INADDR_NONE;
}
if (n != 3) {
return INADDR_NONE;
}
if (octet < 256) {
addr = (addr << 8) + octet;
return htonl(addr);
}
return INADDR_NONE;
}
size_t
ngx_sock_ntop(struct sockaddr *sa, u_char *text, size_t len, ngx_uint_t port)
{
u_char *p;
struct sockaddr_in *sin;
#if (NGX_HAVE_INET6)
size_t n;
struct sockaddr_in6 *sin6;
#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((u_char *) &sin6->sin6_addr, &text[n], len);
if (port) {
n = ngx_sprintf(&text[1 + n], "]:%d",
ntohs(sin6->sin6_port)) - text;
}
return n;
#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)
static 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, "%uxi", 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
/* AF_INET only */
ngx_int_t
ngx_ptocidr(ngx_str_t *text, ngx_cidr_t *cidr)
{
u_char *addr, *mask, *last;
ngx_int_t shift;
addr = text->data;
last = addr + text->len;
mask = ngx_strlchr(addr, last, '/');
cidr->u.in.addr = ngx_inet_addr(addr, (mask ? mask : last) - addr);
if (cidr->u.in.addr == INADDR_NONE) {
return NGX_ERROR;
}
if (mask == NULL) {
cidr->family = AF_INET;
cidr->u.in.mask = 0xffffffff;
return NGX_OK;
}
mask++;
shift = ngx_atoi(mask, last - mask);
if (shift == NGX_ERROR) {
return NGX_ERROR;
}
cidr->family = AF_INET;
if (shift == 0) {
/* the x86 compilers use the shl instruction that shifts by modulo 32 */
cidr->u.in.mask = 0;
if (cidr->u.in.addr == 0) {
return NGX_OK;
}
return NGX_DONE;
}
cidr->u.in.mask = htonl((ngx_uint_t) (0 - (1 << (32 - shift))));
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_parse_url(ngx_pool_t *pool, ngx_url_t *u)
{
u_char *p;
p = u->url.data;
if (ngx_strncasecmp(p, (u_char *) "unix:", 5) == 0) {
return ngx_parse_unix_domain_url(pool, u);
}
if ((p[0] == ':' || p[0] == '/') && !u->listen) {
u->err = "invalid host";
return NGX_ERROR;
}
if (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_peer_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 *p, *host, *port, *last, *uri, *args;
size_t len;
ngx_int_t n;
struct hostent *h;
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) {
uri = args;
} else if (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 (len == 0) {
u->err = "invalid port";
return NGX_ERROR;
}
n = ngx_atoi(port, len);
if (n < 1 || n > 65536) {
u->err = "invalid port";
return NGX_ERROR;
}
u->port = (in_port_t) n;
sin->sin_port = htons((in_port_t) n);
u->port_text.len = len;
u->port_text.data = port;
last = port - 1;
} else {
if (uri == NULL) {
if (u->listen) {
/* test value as port only */
n = ngx_atoi(host, last - host);
if (n != NGX_ERROR) {
if (n < 1 || n > 65536) {
u->err = "invalid port";
return NGX_ERROR;
}
u->port = (in_port_t) n;
sin->sin_port = htons((in_port_t) n);
u->port_text.len = last - host;
u->port_text.data = host;
u->wildcard = 1;
return NGX_OK;
}
}
}
u->no_port = 1;
}
len = last - host;
if (len == 0) {
u->err = "no host";
return NGX_ERROR;
}
if (len == 1 && *host == '*') {
len = 0;
}
u->host.len = len;
u->host.data = host;
if (u->no_resolve) {
return NGX_OK;
}
if (len++) {
p = ngx_alloc(len, pool->log);
if (p == NULL) {
return NGX_ERROR;
}
(void) ngx_cpystrn(p, host, len);
sin->sin_addr.s_addr = inet_addr((const char *) p);
if (sin->sin_addr.s_addr == INADDR_NONE) {
h = gethostbyname((const char *) p);
if (h == NULL || h->h_addr_list[0] == NULL) {
ngx_free(p);
u->err = "host not found";
return NGX_ERROR;
}
sin->sin_addr.s_addr = *(in_addr_t *) (h->h_addr_list[0]);
}
if (sin->sin_addr.s_addr == INADDR_ANY) {
u->wildcard = 1;
}
ngx_free(p);
} else {
sin->sin_addr.s_addr = INADDR_ANY;
u->wildcard = 1;
}
if (u->no_port) {
u->port = u->default_port;
sin->sin_port = htons(u->default_port);
}
if (u->listen) {
return NGX_OK;
}
if (ngx_inet_resolve_host(pool, u) != NGX_OK) {
return NGX_ERROR;
}
return NGX_OK;
}
static ngx_int_t
ngx_parse_inet6_url(ngx_pool_t *pool, ngx_url_t *u)
{
#if (NGX_HAVE_INET6)
int rc;
u_char *p, *host, *port, *last, *uri;
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;
}
if (last - p) {
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;
}
if (*port == ':') {
port++;
len = last - port;
if (len == 0) {
u->err = "invalid port";
return NGX_ERROR;
}
n = ngx_atoi(port, len);
if (n < 1 || n > 65536) {
u->err = "invalid port";
return NGX_ERROR;
}
u->port = (in_port_t) n;
sin6->sin6_port = htons((in_port_t) n);
u->port_text.len = len;
u->port_text.data = port;
} else {
u->no_port = 1;
}
}
len = p - host;
if (len == 0) {
u->err = "no host";
return NGX_ERROR;
}
u->host.len = len++;
u->host.data = host;
p = ngx_alloc(len, pool->log);
if (p == NULL) {
return NGX_ERROR;
}
(void) ngx_cpystrn(p, host, len);
#if (NGX_WIN32)
rc = WSAStringToAddress((char *) p, AF_INET6, NULL,
(SOCKADDR *) sin6, &u->socklen);
rc = !rc;
if (u->port) {
sin6->sin6_port = htons(u->port);
}
#else
rc = inet_pton(AF_INET6, (const char *) p, &sin6->sin6_addr);
#endif
ngx_free(p);
if (rc == 0) {
u->err = "invalid IPv6 address";
return NGX_ERROR;
}
if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
u->wildcard = 1;
}
u->family = AF_INET6;
if (u->no_resolve) {
return NGX_OK;
}
if (u->no_port) {
u->port = u->default_port;
sin6->sin6_port = htons(u->default_port);
}
return NGX_OK;
#else
u->err = "the INET6 sockets are not supported on this platform";
return NGX_ERROR;
#endif
}
ngx_int_t
ngx_inet_resolve_host(ngx_pool_t *pool, ngx_url_t *u)
{
u_char *p, *host;
size_t len;
in_port_t port;
in_addr_t in_addr;
ngx_uint_t i;
struct hostent *h;
struct sockaddr_in *sin;
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);
/* AF_INET only */
port = htons(u->port);
in_addr = inet_addr((char *) host);
if (in_addr == INADDR_NONE) {
h = gethostbyname((char *) host);
ngx_free(host);
if (h == NULL || h->h_addr_list[0] == NULL) {
u->err = "host not found";
return NGX_ERROR;
}
if (u->one_addr == 0) {
for (i = 0; h->h_addr_list[i] != NULL; i++) { /* void */ }
} else {
i = 1;
}
/* MP: ngx_shared_palloc() */
u->addrs = ngx_pcalloc(pool, i * sizeof(ngx_peer_addr_t));
if (u->addrs == NULL) {
return NGX_ERROR;
}
u->naddrs = i;
for (i = 0; h->h_addr_list[i] != NULL; i++) {
sin = ngx_pcalloc(pool, sizeof(struct sockaddr_in));
if (sin == NULL) {
return NGX_ERROR;
}
sin->sin_family = AF_INET;
sin->sin_port = port;
sin->sin_addr.s_addr = *(in_addr_t *) (h->h_addr_list[i]);
u->addrs[i].sockaddr = (struct sockaddr *) sin;
u->addrs[i].socklen = sizeof(struct sockaddr_in);
len = NGX_INET_ADDRSTRLEN + sizeof(":65535") - 1;
p = ngx_pnalloc(pool, len);
if (p == NULL) {
return NGX_ERROR;
}
len = ngx_sock_ntop((struct sockaddr *) sin, p, len, 1);
u->addrs[i].name.len = len;
u->addrs[i].name.data = p;
}
} else {
ngx_free(host);
/* MP: ngx_shared_palloc() */
u->addrs = ngx_pcalloc(pool, sizeof(ngx_peer_addr_t));
if (u->addrs == NULL) {
return NGX_ERROR;
}
sin = ngx_pcalloc(pool, sizeof(struct sockaddr_in));
if (sin == NULL) {
return NGX_ERROR;
}
u->naddrs = 1;
sin->sin_family = AF_INET;
sin->sin_port = port;
sin->sin_addr.s_addr = in_addr;
u->addrs[0].sockaddr = (struct sockaddr *) sin;
u->addrs[0].socklen = sizeof(struct sockaddr_in);
p = ngx_pnalloc(pool, u->host.len + sizeof(":65535") - 1);
if (p == NULL) {
return NGX_ERROR;
}
u->addrs[0].name.len = ngx_sprintf(p, "%V:%d",
&u->host, ntohs(port)) - p;
u->addrs[0].name.data = p;
}
return NGX_OK;
}