b636d99d91
For now, printing of Sun RPC requests is disabled because we do not yet have the RPC header files. This should affect basically noone, as we do not have any RPC-based programs yet, for the same reason. Change-Id: Ie7818faaaacdc104d8b2c37a68866b4ce18247d6
277 lines
7.1 KiB
C
277 lines
7.1 KiB
C
/*
|
|
* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of the project nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
/*
|
|
* Issues to be discussed:
|
|
* - Thread safe-ness must be checked
|
|
* - Return values. There seems to be no standard for return value (RFC2553)
|
|
* but INRIA implementation returns EAI_xxx defined for getaddrinfo().
|
|
* - RFC2553 says that we should raise error on short buffer. X/Open says
|
|
* we need to truncate the result. We obey RFC2553 (and X/Open should be
|
|
* modified).
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include <config.h>
|
|
#endif
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/socket.h>
|
|
#include <net/if.h>
|
|
#include <netinet/in.h>
|
|
#include <arpa/inet.h>
|
|
#include <arpa/nameser.h>
|
|
#include <netdb.h>
|
|
#include <resolv.h>
|
|
#include <string.h>
|
|
#include <stddef.h>
|
|
#include <errno.h>
|
|
|
|
#ifdef NEED_ADDRINFO_H
|
|
#include "addrinfo.h"
|
|
#endif
|
|
|
|
#define SUCCESS 0
|
|
#define ANY 0
|
|
#define YES 1
|
|
#define NO 0
|
|
|
|
static struct afd {
|
|
int a_af;
|
|
int a_addrlen;
|
|
int a_socklen;
|
|
int a_off;
|
|
} afdl [] = {
|
|
#ifdef INET6
|
|
{PF_INET6, sizeof(struct in6_addr), sizeof(struct sockaddr_in6),
|
|
offsetof(struct sockaddr_in6, sin6_addr)},
|
|
#endif
|
|
{PF_INET, sizeof(struct in_addr), sizeof(struct sockaddr_in),
|
|
offsetof(struct sockaddr_in, sin_addr)},
|
|
{0, 0, 0},
|
|
};
|
|
|
|
struct sockinet {
|
|
u_char si_len;
|
|
u_char si_family;
|
|
u_short si_port;
|
|
};
|
|
|
|
#define ENI_NOSOCKET 0
|
|
#define ENI_NOSERVNAME 1
|
|
#define ENI_NOHOSTNAME 2
|
|
#define ENI_MEMORY 3
|
|
#define ENI_SYSTEM 4
|
|
#define ENI_FAMILY 5
|
|
#define ENI_SALEN 6
|
|
|
|
int
|
|
getnameinfo(sa, salen, host, hostlen, serv, servlen, flags)
|
|
const struct sockaddr *sa;
|
|
size_t salen;
|
|
char *host;
|
|
size_t hostlen;
|
|
char *serv;
|
|
size_t servlen;
|
|
int flags;
|
|
{
|
|
struct afd *afd;
|
|
struct servent *sp;
|
|
struct hostent *hp;
|
|
u_short port;
|
|
int family, i;
|
|
char *addr, *p;
|
|
uint32_t v4a;
|
|
int h_error;
|
|
char numserv[512];
|
|
char numaddr[512];
|
|
|
|
if (sa == NULL)
|
|
return ENI_NOSOCKET;
|
|
|
|
#ifdef HAVE_SA_LEN /*XXX*/
|
|
if (sa->sa_len != salen)
|
|
return ENI_SALEN;
|
|
#endif
|
|
|
|
family = sa->sa_family;
|
|
for (i = 0; afdl[i].a_af; i++)
|
|
if (afdl[i].a_af == family) {
|
|
afd = &afdl[i];
|
|
goto found;
|
|
}
|
|
return ENI_FAMILY;
|
|
|
|
found:
|
|
if (salen != afd->a_socklen)
|
|
return ENI_SALEN;
|
|
|
|
port = ((struct sockinet *)sa)->si_port; /* network byte order */
|
|
addr = (char *)sa + afd->a_off;
|
|
|
|
if (serv == NULL || servlen == 0) {
|
|
/*
|
|
* do nothing in this case.
|
|
* in case you are wondering if "&&" is more correct than
|
|
* "||" here: RFC2553 says that serv == NULL OR servlen == 0
|
|
* means that the caller does not want the result.
|
|
*/
|
|
} else {
|
|
if (flags & NI_NUMERICSERV)
|
|
sp = NULL;
|
|
else {
|
|
sp = getservbyport(port,
|
|
(flags & NI_DGRAM) ? "udp" : "tcp");
|
|
}
|
|
if (sp) {
|
|
if (strlen(sp->s_name) + 1 > servlen)
|
|
return ENI_MEMORY;
|
|
strcpy(serv, sp->s_name);
|
|
} else {
|
|
snprintf(numserv, sizeof(numserv), "%d", ntohs(port));
|
|
if (strlen(numserv) + 1 > servlen)
|
|
return ENI_MEMORY;
|
|
strcpy(serv, numserv);
|
|
}
|
|
}
|
|
|
|
switch (sa->sa_family) {
|
|
case AF_INET:
|
|
v4a = (uint32_t)
|
|
ntohl(((struct sockaddr_in *)sa)->sin_addr.s_addr);
|
|
if (IN_MULTICAST(v4a) || IN_EXPERIMENTAL(v4a))
|
|
flags |= NI_NUMERICHOST;
|
|
v4a >>= IN_CLASSA_NSHIFT;
|
|
if (v4a == 0)
|
|
flags |= NI_NUMERICHOST;
|
|
break;
|
|
#ifdef INET6
|
|
case AF_INET6:
|
|
{
|
|
struct sockaddr_in6 *sin6;
|
|
sin6 = (struct sockaddr_in6 *)sa;
|
|
switch (sin6->sin6_addr.s6_addr[0]) {
|
|
case 0x00:
|
|
if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr))
|
|
;
|
|
else if (IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr))
|
|
;
|
|
else
|
|
flags |= NI_NUMERICHOST;
|
|
break;
|
|
default:
|
|
if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
|
|
flags |= NI_NUMERICHOST;
|
|
}
|
|
else if (IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr))
|
|
flags |= NI_NUMERICHOST;
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
#endif
|
|
}
|
|
if (host == NULL || hostlen == 0) {
|
|
/*
|
|
* do nothing in this case.
|
|
* in case you are wondering if "&&" is more correct than
|
|
* "||" here: RFC2553 says that host == NULL OR hostlen == 0
|
|
* means that the caller does not want the result.
|
|
*/
|
|
} else if (flags & NI_NUMERICHOST) {
|
|
/* NUMERICHOST and NAMEREQD conflicts with each other */
|
|
if (flags & NI_NAMEREQD)
|
|
return ENI_NOHOSTNAME;
|
|
if (inet_ntop(afd->a_af, addr, numaddr, sizeof(numaddr))
|
|
== NULL)
|
|
return ENI_SYSTEM;
|
|
if (strlen(numaddr) + 1 > hostlen)
|
|
return ENI_MEMORY;
|
|
strcpy(host, numaddr);
|
|
#if defined(INET6) && defined(NI_WITHSCOPEID)
|
|
if (afd->a_af == AF_INET6 &&
|
|
(IN6_IS_ADDR_LINKLOCAL((struct in6_addr *)addr) ||
|
|
IN6_IS_ADDR_MULTICAST((struct in6_addr *)addr)) &&
|
|
((struct sockaddr_in6 *)sa)->sin6_scope_id) {
|
|
#ifndef ALWAYS_WITHSCOPE
|
|
if (flags & NI_WITHSCOPEID)
|
|
#endif /* !ALWAYS_WITHSCOPE */
|
|
{
|
|
char *ep = strchr(host, '\0');
|
|
unsigned int ifindex =
|
|
((struct sockaddr_in6 *)sa)->sin6_scope_id;
|
|
|
|
*ep = SCOPE_DELIMITER;
|
|
if ((if_indextoname(ifindex, ep + 1)) == NULL)
|
|
/* XXX what should we do? */
|
|
strncpy(ep + 1, "???", 3);
|
|
}
|
|
}
|
|
#endif /* INET6 */
|
|
} else {
|
|
#ifdef USE_GETIPNODEBY
|
|
hp = getipnodebyaddr(addr, afd->a_addrlen, afd->a_af, &h_error);
|
|
#else
|
|
hp = gethostbyaddr(addr, afd->a_addrlen, afd->a_af);
|
|
#ifdef HAVE_H_ERRNO
|
|
h_error = h_errno;
|
|
#else
|
|
h_error = EINVAL;
|
|
#endif
|
|
#endif
|
|
|
|
if (hp) {
|
|
if (flags & NI_NOFQDN) {
|
|
p = strchr(hp->h_name, '.');
|
|
if (p) *p = '\0';
|
|
}
|
|
if (strlen(hp->h_name) + 1 > hostlen) {
|
|
#ifdef USE_GETIPNODEBY
|
|
freehostent(hp);
|
|
#endif
|
|
return ENI_MEMORY;
|
|
}
|
|
strcpy(host, hp->h_name);
|
|
#ifdef USE_GETIPNODEBY
|
|
freehostent(hp);
|
|
#endif
|
|
} else {
|
|
if (flags & NI_NAMEREQD)
|
|
return ENI_NOHOSTNAME;
|
|
if (inet_ntop(afd->a_af, addr, numaddr, sizeof(numaddr))
|
|
== NULL)
|
|
return ENI_NOHOSTNAME;
|
|
if (strlen(numaddr) + 1 > hostlen)
|
|
return ENI_MEMORY;
|
|
strcpy(host, numaddr);
|
|
}
|
|
}
|
|
return SUCCESS;
|
|
}
|