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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*
*/
/* $Id: misc.c 146 2006-03-24 00:26:54Z njacobs $ */
#pragma ident "%Z%%M% %I% %E% SMI"
/*LINTLIBRARY*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <ctype.h>
#include <sys/types.h>
#include <papi.h>
#include <uri.h>
#include <config-site.h>
/*
* The implementations of strlcpy() and strlcat() have been taken directly
* from OpenSolaris. The contents of this file originated from
* usr/src/lib/libc/port/gen/strlcpy.c
* usr/src/lib/libc/port/gen/strcat.c
*/
#ifndef HAVE_STRLCPY
size_t
strlcpy(char *dst, const char *src, size_t len)
{
size_t slen = strlen(src);
size_t copied;
if (len == 0)
return (slen);
if (slen >= len)
copied = len - 1;
else
copied = slen;
(void) memcpy(dst, src, copied);
dst[copied] = '\0';
return (slen);
}
#endif
#ifndef HAVE_STRLCAT
size_t
strlcat(char *dst, const char *src, size_t dstsize)
{
char *df = dst;
size_t left = dstsize;
size_t l1;
size_t l2 = strlen(src);
size_t copied;
while (left-- != 0 && *df != '\0')
df++;
l1 = df - dst;
if (dstsize == l1)
return (l1 + l2);
copied = l1 + l2 >= dstsize ? dstsize - l1 - 1 : l2;
(void) memcpy(dst + l1, src, copied);
dst[l1+copied] = '\0';
return (l1 + l2);
}
#endif
#if defined(__sun) && defined(__SVR4)
#include <sys/systeminfo.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <sys/sockio.h>
#include <net/if.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
static struct in6_addr **
local_interfaces()
{
struct in6_addr **result = NULL;
int s;
struct lifnum n;
struct lifconf c;
struct lifreq *r;
int count;
/* we need a socket to get the interfaces */
if ((s = socket(AF_INET, SOCK_DGRAM, 0)) < 0)
return (0);
/* get the number of interfaces */
memset(&n, 0, sizeof (n));
n.lifn_family = AF_UNSPEC;
if (ioctl(s, SIOCGLIFNUM, (char *)&n) < 0) {
close(s);
return (0); /* no interfaces */
}
/* get the interface(s) configuration */
memset(&c, 0, sizeof (c));
c.lifc_family = AF_UNSPEC;
c.lifc_buf = calloc(n.lifn_count, sizeof (struct lifreq));
c.lifc_len = (n.lifn_count * sizeof (struct lifreq));
if (ioctl(s, SIOCGLIFCONF, (char *)&c) < 0) {
free(c.lifc_buf);
close(s);
return (0); /* can't get interface(s) configuration */
}
close(s);
r = c.lifc_req;
for (count = c.lifc_len / sizeof (struct lifreq);
count > 0; count--, r++) {
struct in6_addr v6[1], *addr = NULL;
switch (r->lifr_addr.ss_family) {
case AF_INET: {
struct sockaddr_in *s =
(struct sockaddr_in *)&r->lifr_addr;
IN6_INADDR_TO_V4MAPPED(&s->sin_addr, v6);
addr = v6;
}
break;
case AF_INET6: {
struct sockaddr_in6 *s =
(struct sockaddr_in6 *)&r->lifr_addr;
addr = &s->sin6_addr;
}
break;
}
if (addr != NULL) {
struct in6_addr *a = malloc(sizeof (*a));
memcpy(a, addr, sizeof (*a));
list_append(&result, a);
}
}
free(c.lifc_buf);
return (result);
}
static int
match_interfaces(char *host)
{
struct in6_addr **lif = local_interfaces();
struct hostent *hp;
int rc = 0;
int errnum;
/* are there any local interfaces */
if (lif == NULL)
return (0);
/* cycle through the host db addresses */
hp = getipnodebyname(host, AF_INET6, AI_ALL|AI_V4MAPPED, &errnum);
if (hp != NULL) {
struct in6_addr **tmp = (struct in6_addr **)hp->h_addr_list;
int i;
for (i = 0; ((rc == 0) && (tmp[i] != NULL)); i++) {
int j;
for (j = 0; ((rc == 0) && (lif[j] != NULL)); j++)
if (memcmp(tmp[i], lif[j],
sizeof (struct in6_addr)) == 0)
rc = 1;
}
}
free(lif);
return (rc);
}
#endif
int
is_localhost(char *host)
{
char hostname[BUFSIZ];
/* is it "localhost" */
if (strncasecmp(host, "localhost", 10) == 0)
return (1);
/* is it the {nodename} */
sysinfo(SI_HOSTNAME, hostname, sizeof (hostname));
if (strncasecmp(host, hostname, strlen(hostname)) == 0)
return (1);
#if defined(__sun) && defined(__SVR4)
/* does it match one of the host's configured interfaces */
if (match_interfaces(host) != 0)
return (1);
#endif
return (0);
}
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