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-rw-r--r--app/nginx/src/core/ngx_inet.c1493
1 files changed, 1493 insertions, 0 deletions
diff --git a/app/nginx/src/core/ngx_inet.c b/app/nginx/src/core/ngx_inet.c
new file mode 100644
index 0000000..3bcd3e7
--- /dev/null
+++ b/app/nginx/src/core/ngx_inet.c
@@ -0,0 +1,1493 @@
+
+/*
+ * 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);
+
+
+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;
+ struct sockaddr_in *sin;
+#if (NGX_HAVE_INET6)
+ size_t n;
+ 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 {
+ p = ngx_snprintf(text, len, "unix:%s%Z", 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 *p, *host, *port, *last, *uri, *args;
+ size_t len;
+ ngx_int_t n;
+ struct sockaddr_in *sin;
+#if (NGX_HAVE_INET6)
+ struct sockaddr_in6 *sin6;
+#endif
+
+ 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;
+
+ n = ngx_atoi(port, len);
+
+ if (n < 1 || n > 65535) {
+ 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 > 65535) {
+ 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;
+ u->port = u->default_port;
+ sin->sin_port = htons(u->default_port);
+ }
+
+ 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_OK;
+ }
+
+ 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;
+ }
+
+ u->naddrs = 1;
+
+ u->addrs = ngx_pcalloc(pool, sizeof(ngx_addr_t));
+ if (u->addrs == NULL) {
+ return NGX_ERROR;
+ }
+
+ sin = ngx_pcalloc(pool, sizeof(struct sockaddr_in));
+ if (sin == NULL) {
+ return NGX_ERROR;
+ }
+
+ ngx_memcpy(sin, &u->sockaddr, sizeof(struct sockaddr_in));
+
+ 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, u->port) - p;
+ u->addrs[0].name.data = p;
+
+ return NGX_OK;
+ }
+
+ 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);
+
+ switch (u->family) {
+
+#if (NGX_HAVE_INET6)
+ case AF_INET6:
+ sin6 = (struct sockaddr_in6 *) &u->sockaddr;
+
+ if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
+ u->wildcard = 1;
+ }
+
+ break;
+#endif
+
+ default: /* AF_INET */
+ sin = (struct sockaddr_in *) &u->sockaddr;
+
+ if (sin->sin_addr.s_addr == INADDR_ANY) {
+ u->wildcard = 1;
+ }
+
+ break;
+ }
+
+ 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;
+ 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;
+
+ n = ngx_atoi(port, len);
+
+ if (n < 1 || n > 65535) {
+ 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;
+ 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;
+ u->naddrs = 1;
+
+ u->addrs = ngx_pcalloc(pool, sizeof(ngx_addr_t));
+ if (u->addrs == NULL) {
+ return NGX_ERROR;
+ }
+
+ sin6 = ngx_pcalloc(pool, sizeof(struct sockaddr_in6));
+ if (sin6 == NULL) {
+ return NGX_ERROR;
+ }
+
+ ngx_memcpy(sin6, &u->sockaddr, sizeof(struct sockaddr_in6));
+
+ u->addrs[0].sockaddr = (struct sockaddr *) sin6;
+ u->addrs[0].socklen = sizeof(struct sockaddr_in6);
+
+ 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, u->port) - p;
+ u->addrs[0].name.data = p;
+
+ return NGX_OK;
+
+#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 *p, *host;
+ size_t len;
+ in_port_t port;
+ ngx_uint_t i;
+ struct addrinfo hints, *res, *rp;
+ struct sockaddr_in *sin;
+ struct sockaddr_in6 *sin6;
+
+ port = htons(u->port);
+
+ 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 (i = 0, rp = res; rp != NULL; rp = rp->ai_next) {
+
+ switch (rp->ai_family) {
+
+ case AF_INET:
+ case AF_INET6:
+ break;
+
+ default:
+ continue;
+ }
+
+ i++;
+ }
+
+ if (i == 0) {
+ u->err = "host not found";
+ goto failed;
+ }
+
+ /* MP: ngx_shared_palloc() */
+
+ u->addrs = ngx_pcalloc(pool, i * sizeof(ngx_addr_t));
+ if (u->addrs == NULL) {
+ goto failed;
+ }
+
+ u->naddrs = i;
+
+ i = 0;
+
+ /* AF_INET addresses first */
+
+ for (rp = res; rp != NULL; rp = rp->ai_next) {
+
+ if (rp->ai_family != AF_INET) {
+ continue;
+ }
+
+ sin = ngx_pcalloc(pool, rp->ai_addrlen);
+ if (sin == NULL) {
+ goto failed;
+ }
+
+ ngx_memcpy(sin, rp->ai_addr, rp->ai_addrlen);
+
+ sin->sin_port = port;
+
+ u->addrs[i].sockaddr = (struct sockaddr *) sin;
+ u->addrs[i].socklen = rp->ai_addrlen;
+
+ len = NGX_INET_ADDRSTRLEN + sizeof(":65535") - 1;
+
+ p = ngx_pnalloc(pool, len);
+ if (p == NULL) {
+ goto failed;
+ }
+
+ len = ngx_sock_ntop((struct sockaddr *) sin, rp->ai_addrlen, p, len, 1);
+
+ u->addrs[i].name.len = len;
+ u->addrs[i].name.data = p;
+
+ i++;
+ }
+
+ for (rp = res; rp != NULL; rp = rp->ai_next) {
+
+ if (rp->ai_family != AF_INET6) {
+ continue;
+ }
+
+ sin6 = ngx_pcalloc(pool, rp->ai_addrlen);
+ if (sin6 == NULL) {
+ goto failed;
+ }
+
+ ngx_memcpy(sin6, rp->ai_addr, rp->ai_addrlen);
+
+ sin6->sin6_port = port;
+
+ u->addrs[i].sockaddr = (struct sockaddr *) sin6;
+ u->addrs[i].socklen = rp->ai_addrlen;
+
+ len = NGX_INET6_ADDRSTRLEN + sizeof("[]:65535") - 1;
+
+ p = ngx_pnalloc(pool, len);
+ if (p == NULL) {
+ goto failed;
+ }
+
+ len = ngx_sock_ntop((struct sockaddr *) sin6, rp->ai_addrlen, p,
+ len, 1);
+
+ u->addrs[i].name.len = len;
+ u->addrs[i].name.data = p;
+
+ i++;
+ }
+
+ 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 *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;
+
+ /* AF_INET only */
+
+ port = htons(u->port);
+
+ in_addr = ngx_inet_addr(u->host.data, u->host.len);
+
+ if (in_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 (i = 0; h->h_addr_list[i] != NULL; i++) { /* void */ }
+
+ /* MP: ngx_shared_palloc() */
+
+ u->addrs = ngx_pcalloc(pool, i * sizeof(ngx_addr_t));
+ if (u->addrs == NULL) {
+ return NGX_ERROR;
+ }
+
+ u->naddrs = i;
+
+ for (i = 0; i < u->naddrs; 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,
+ sizeof(struct sockaddr_in), p, len, 1);
+
+ u->addrs[i].name.len = len;
+ u->addrs[i].name.data = p;
+ }
+
+ } else {
+
+ /* MP: ngx_shared_palloc() */
+
+ u->addrs = ngx_pcalloc(pool, sizeof(ngx_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;
+}
+
+#endif /* NGX_HAVE_GETADDRINFO && NGX_HAVE_INET6 */
+
+
+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;
+ }
+}