thank you CVS for missing the "core" directory

1 files changed, 1007 insertions, 0 deletions

diff --git a/usr.sbin/nginx/src/core/ngx_inet.c b/usr.sbin/nginx/src/core/ngx_inet.c
new file mode 100644
index 00000000000..ac1ca8bf202
--- /dev/null
+++ b/usr.sbin/nginx/src/core/ngx_inet.c
@@ -0,0 +1,1007 @@
+
+/*
+ * Copyright (C) Igor Sysoev
+ */
+
+
+#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');
+            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;
+}
+
+
+#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, 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;
+
+        /* we do not include trailing zero in address length */
+
+        return ngx_snprintf(text, len, "unix:%s%Z", saun->sun_path) - 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, "%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
+
+
+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:
+        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) (0 - (1 << (8 - s)));
+
+            if (addr[i] != (addr[i] & mask[i])) {
+                rc = NGX_DONE;
+                addr[i] &= mask[i];
+            }
+        }
+
+        return rc;
+#endif
+
+    default: /* AF_INET */
+
+        if (shift) {
+            cidr->u.in.mask = htonl((ngx_uint_t) (0 - (1 << (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_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 waring:
+     *    potentially uninitialized local variable 'inaddr6' used
+     */
+    ngx_memzero(inaddr6.s6_addr, 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_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_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) {
+        sin->sin_addr.s_addr = ngx_inet_addr(host, len);
+
+        if (sin->sin_addr.s_addr == INADDR_NONE) {
+            p = ngx_alloc(++len, pool->log);
+            if (p == NULL) {
+                return NGX_ERROR;
+            }
+
+            (void) ngx_cpystrn(p, host, len);
+
+            h = gethostbyname((const char *) p);
+
+            ngx_free(p);
+
+            if (h == NULL || h->h_addr_list[0] == NULL) {
+                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;
+        }
+
+    } 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)
+    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;
+
+    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;
+
+    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;
+
+    /* 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;
+        }
+
+        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_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, 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;
+}