/* Get address information (partial implementation).
- Copyright (C) 1997, 2001, 2002, 2004, 2005 Free Software Foundation, Inc.
+ Copyright (C) 1997, 2001-2002, 2004-2014 Free Software Foundation, Inc.
Contributed by Simon Josefsson <simon@josefsson.org>.
This program is free software; you can redistribute it and/or modify
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software Foundation,
- Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ along with this program; if not, see <http://www.gnu.org/licenses/>. */
-#if HAVE_CONFIG_H
-# include <config.h>
+/* Don't use __attribute__ __nonnull__ in this compilation unit. Otherwise gcc
+ optimizes away the sa == NULL test below. */
+#define _GL_ARG_NONNULL(params)
+
+#include <config.h>
+
+#include <netdb.h>
+
+#if HAVE_NETINET_IN_H
+# include <netinet/in.h>
#endif
+/* Get inet_ntop. */
+#include <arpa/inet.h>
+
/* Get calloc. */
#include <stdlib.h>
-/* Get memcpy. */
+/* Get memcpy, strdup. */
#include <string.h>
-/* Get struct hostent. */
-#include <netdb.h>
+/* Get snprintf. */
+#include <stdio.h>
#include <stdbool.h>
#define _(String) gettext (String)
#define N_(String) String
-#include "getaddrinfo.h"
+/* BeOS has AF_INET, but not PF_INET. */
+#ifndef PF_INET
+# define PF_INET AF_INET
+#endif
+/* BeOS also lacks PF_UNSPEC. */
+#ifndef PF_UNSPEC
+# define PF_UNSPEC 0
+#endif
+
+#if defined _WIN32 || defined __WIN32__
+# define WINDOWS_NATIVE
+#endif
+
+/* gl_sockets_startup */
+#include "sockets.h"
+
+#ifdef WINDOWS_NATIVE
+typedef int (WSAAPI *getaddrinfo_func) (const char*, const char*,
+ const struct addrinfo*,
+ struct addrinfo**);
+typedef void (WSAAPI *freeaddrinfo_func) (struct addrinfo*);
+typedef int (WSAAPI *getnameinfo_func) (const struct sockaddr*,
+ socklen_t, char*, DWORD,
+ char*, DWORD, int);
+
+static getaddrinfo_func getaddrinfo_ptr = NULL;
+static freeaddrinfo_func freeaddrinfo_ptr = NULL;
+static getnameinfo_func getnameinfo_ptr = NULL;
+
+static int
+use_win32_p (void)
+{
+ static int done = 0;
+ HMODULE h;
+
+ if (done)
+ return getaddrinfo_ptr ? 1 : 0;
+
+ done = 1;
+
+ h = GetModuleHandle ("ws2_32.dll");
+
+ if (h)
+ {
+ getaddrinfo_ptr = (getaddrinfo_func) GetProcAddress (h, "getaddrinfo");
+ freeaddrinfo_ptr = (freeaddrinfo_func) GetProcAddress (h, "freeaddrinfo");
+ getnameinfo_ptr = (getnameinfo_func) GetProcAddress (h, "getnameinfo");
+ }
+
+ /* If either is missing, something is odd. */
+ if (!getaddrinfo_ptr || !freeaddrinfo_ptr || !getnameinfo_ptr)
+ {
+ getaddrinfo_ptr = NULL;
+ freeaddrinfo_ptr = NULL;
+ getnameinfo_ptr = NULL;
+ return 0;
+ }
+
+ gl_sockets_startup (SOCKETS_1_1);
+
+ return 1;
+}
+#endif
-static inline bool
+static bool
validate_family (int family)
{
/* FIXME: Support more families. */
socket addresses. */
int
getaddrinfo (const char *restrict nodename,
- const char *restrict servname,
- const struct addrinfo *restrict hints,
- struct addrinfo **restrict res)
+ const char *restrict servname,
+ const struct addrinfo *restrict hints,
+ struct addrinfo **restrict res)
{
struct addrinfo *tmp;
- struct servent *se;
+ int port = 0;
struct hostent *he;
- size_t sinlen;
+ void *storage;
+ size_t size;
+#if HAVE_IPV6
+ struct v6_pair {
+ struct addrinfo addrinfo;
+ struct sockaddr_in6 sockaddr_in6;
+ };
+#endif
+#if HAVE_IPV4
+ struct v4_pair {
+ struct addrinfo addrinfo;
+ struct sockaddr_in sockaddr_in;
+ };
+#endif
+
+#ifdef WINDOWS_NATIVE
+ if (use_win32_p ())
+ return getaddrinfo_ptr (nodename, servname, hints, res);
+#endif
- if (hints && hints->ai_flags)
+ if (hints && (hints->ai_flags & ~(AI_CANONNAME|AI_PASSIVE)))
/* FIXME: Support more flags. */
return EAI_BADFLAGS;
return EAI_SOCKTYPE; /* FIXME: Better return code? */
if (!nodename)
- /* FIXME: Support server bind mode. */
- return EAI_NONAME;
+ {
+ if (!(hints->ai_flags & AI_PASSIVE))
+ return EAI_NONAME;
+
+#ifdef HAVE_IPV6
+ nodename = (hints->ai_family == AF_INET6) ? "::" : "0.0.0.0";
+#else
+ nodename = "0.0.0.0";
+#endif
+ }
if (servname)
{
+ struct servent *se = NULL;
const char *proto =
- (hints && hints->ai_socktype == SOCK_DGRAM) ? "udp" : "tcp";
+ (hints && hints->ai_socktype == SOCK_DGRAM) ? "udp" : "tcp";
- /* FIXME: Use getservbyname_r if available. */
- se = getservbyname (servname, proto);
+ if (hints == NULL || !(hints->ai_flags & AI_NUMERICSERV))
+ /* FIXME: Use getservbyname_r if available. */
+ se = getservbyname (servname, proto);
if (!se)
- return EAI_SERVICE;
+ {
+ char *c;
+ if (!(*servname >= '0' && *servname <= '9'))
+ return EAI_NONAME;
+ port = strtoul (servname, &c, 10);
+ if (*c || port > 0xffff)
+ return EAI_NONAME;
+ port = htons (port);
+ }
+ else
+ port = se->s_port;
}
/* FIXME: Use gethostbyname_r if available. */
{
#if HAVE_IPV6
case PF_INET6:
- sinlen = sizeof (struct sockaddr_in6);
+ size = sizeof (struct v6_pair);
break;
#endif
#if HAVE_IPV4
case PF_INET:
- sinlen = sizeof (struct sockaddr_in);
+ size = sizeof (struct v4_pair);
break;
#endif
return EAI_NODATA;
}
- tmp = calloc (1, sizeof (*tmp) + sinlen);
- if (!tmp)
+ storage = calloc (1, size);
+ if (!storage)
return EAI_MEMORY;
switch (he->h_addrtype)
#if HAVE_IPV6
case PF_INET6:
{
- struct sockaddr_in6 *sinp = (void *) tmp + sizeof (*tmp);
+ struct v6_pair *p = storage;
+ struct sockaddr_in6 *sinp = &p->sockaddr_in6;
+ tmp = &p->addrinfo;
- if (se)
- sinp->sin6_port = se->s_port;
+ if (port)
+ sinp->sin6_port = port;
- if (he->h_length != sizeof (sinp->sin6_addr))
- return EAI_SYSTEM; /* FIXME: Better return code? Set errno? */
+ if (he->h_length != sizeof (sinp->sin6_addr))
+ {
+ free (storage);
+ return EAI_SYSTEM; /* FIXME: Better return code? Set errno? */
+ }
- memcpy (&sinp->sin6_addr, he->h_addr_list[0], he->h_length);
+ memcpy (&sinp->sin6_addr, he->h_addr_list[0], sizeof sinp->sin6_addr);
- tmp->ai_addr = (struct sockaddr *) sinp;
- tmp->ai_addrlen = sinlen;
+ tmp->ai_addr = (struct sockaddr *) sinp;
+ tmp->ai_addrlen = sizeof *sinp;
}
break;
#endif
#if HAVE_IPV4
case PF_INET:
{
- struct sockaddr_in *sinp = (void *) tmp + sizeof (*tmp);
+ struct v4_pair *p = storage;
+ struct sockaddr_in *sinp = &p->sockaddr_in;
+ tmp = &p->addrinfo;
- if (se)
- sinp->sin_port = se->s_port;
+ if (port)
+ sinp->sin_port = port;
- if (he->h_length != sizeof (sinp->sin_addr))
- return EAI_SYSTEM; /* FIXME: Better return code? Set errno? */
+ if (he->h_length != sizeof (sinp->sin_addr))
+ {
+ free (storage);
+ return EAI_SYSTEM; /* FIXME: Better return code? Set errno? */
+ }
- memcpy (&sinp->sin_addr, he->h_addr_list[0], he->h_length);
+ memcpy (&sinp->sin_addr, he->h_addr_list[0], sizeof sinp->sin_addr);
- tmp->ai_addr = (struct sockaddr *) sinp;
- tmp->ai_addrlen = sinlen;
+ tmp->ai_addr = (struct sockaddr *) sinp;
+ tmp->ai_addrlen = sizeof *sinp;
}
break;
#endif
default:
- free (tmp);
+ free (storage);
return EAI_NODATA;
}
+ if (hints && hints->ai_flags & AI_CANONNAME)
+ {
+ const char *cn;
+ if (he->h_name)
+ cn = he->h_name;
+ else
+ cn = nodename;
+
+ tmp->ai_canonname = strdup (cn);
+ if (!tmp->ai_canonname)
+ {
+ free (storage);
+ return EAI_MEMORY;
+ }
+ }
+
tmp->ai_protocol = (hints) ? hints->ai_protocol : 0;
tmp->ai_socktype = (hints) ? hints->ai_socktype : 0;
tmp->ai_addr->sa_family = he->h_addrtype;
+ tmp->ai_family = he->h_addrtype;
+
+#ifdef HAVE_STRUCT_SOCKADDR_SA_LEN
+ switch (he->h_addrtype)
+ {
+#if HAVE_IPV4
+ case AF_INET:
+ tmp->ai_addr->sa_len = sizeof (struct sockaddr_in);
+ break;
+#endif
+#if HAVE_IPV6
+ case AF_INET6:
+ tmp->ai_addr->sa_len = sizeof (struct sockaddr_in6);
+ break;
+#endif
+ }
+#endif
/* FIXME: If more than one address, create linked list of addrinfo's. */
return 0;
}
-/* Free `addrinfo' structure AI including associated storage. */
+/* Free 'addrinfo' structure AI including associated storage. */
void
freeaddrinfo (struct addrinfo *ai)
{
+#ifdef WINDOWS_NATIVE
+ if (use_win32_p ())
+ {
+ freeaddrinfo_ptr (ai);
+ return;
+ }
+#endif
+
while (ai)
{
struct addrinfo *cur;
cur = ai;
ai = ai->ai_next;
+
+ free (cur->ai_canonname);
free (cur);
}
}
+
+int
+getnameinfo (const struct sockaddr *restrict sa, socklen_t salen,
+ char *restrict node, socklen_t nodelen,
+ char *restrict service, socklen_t servicelen,
+ int flags)
+{
+#ifdef WINDOWS_NATIVE
+ if (use_win32_p ())
+ return getnameinfo_ptr (sa, salen, node, nodelen,
+ service, servicelen, flags);
+#endif
+
+ /* FIXME: Support other flags. */
+ if ((node && nodelen > 0 && !(flags & NI_NUMERICHOST)) ||
+ (service && servicelen > 0 && !(flags & NI_NUMERICHOST)) ||
+ (flags & ~(NI_NUMERICHOST|NI_NUMERICSERV)))
+ return EAI_BADFLAGS;
+
+ if (sa == NULL || salen < sizeof (sa->sa_family))
+ return EAI_FAMILY;
+
+ switch (sa->sa_family)
+ {
+#if HAVE_IPV4
+ case AF_INET:
+ if (salen < sizeof (struct sockaddr_in))
+ return EAI_FAMILY;
+ break;
+#endif
+#if HAVE_IPV6
+ case AF_INET6:
+ if (salen < sizeof (struct sockaddr_in6))
+ return EAI_FAMILY;
+ break;
+#endif
+ default:
+ return EAI_FAMILY;
+ }
+
+ if (node && nodelen > 0 && flags & NI_NUMERICHOST)
+ {
+ switch (sa->sa_family)
+ {
+#if HAVE_IPV4
+ case AF_INET:
+ if (!inet_ntop (AF_INET,
+ &(((const struct sockaddr_in *) sa)->sin_addr),
+ node, nodelen))
+ return EAI_SYSTEM;
+ break;
+#endif
+
+#if HAVE_IPV6
+ case AF_INET6:
+ if (!inet_ntop (AF_INET6,
+ &(((const struct sockaddr_in6 *) sa)->sin6_addr),
+ node, nodelen))
+ return EAI_SYSTEM;
+ break;
+#endif
+
+ default:
+ return EAI_FAMILY;
+ }
+ }
+
+ if (service && servicelen > 0 && flags & NI_NUMERICSERV)
+ switch (sa->sa_family)
+ {
+#if HAVE_IPV4
+ case AF_INET:
+#endif
+#if HAVE_IPV6
+ case AF_INET6:
+#endif
+ {
+ unsigned short int port
+ = ntohs (((const struct sockaddr_in *) sa)->sin_port);
+ if (servicelen <= snprintf (service, servicelen, "%u", port))
+ return EAI_OVERFLOW;
+ }
+ break;
+ }
+
+ return 0;
+}
projects / gnulib.git / blobdiff