0c4f7708cb
Add indirection and symbol renaming under MKSANITIZER for the linked in version of getifaddrs.
148 lines
4.1 KiB
C
148 lines
4.1 KiB
C
/* $NetBSD: ifaddrlist.c,v 1.11 2019/08/18 04:12:07 kamil Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1997, 1998, 1999, 2000
|
|
* The Regents of the University of California. 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. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the Computer Systems
|
|
* Engineering Group at Lawrence Berkeley Laboratory.
|
|
* 4. Neither the name of the University nor of the Laboratory may be used
|
|
* to endorse or promote products derived from this software without
|
|
* specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
#ifndef lint
|
|
#if 0
|
|
static const char rcsid[] =
|
|
"@(#) Header: ifaddrlist.c,v 1.2 97/04/22 13:31:05 leres Exp (LBL)";
|
|
"@(#) Id: ifaddrlist.c,v 1.9 2000/11/23 20:01:55 leres Exp (LBL)";
|
|
#else
|
|
__RCSID("$NetBSD: ifaddrlist.c,v 1.11 2019/08/18 04:12:07 kamil Exp $");
|
|
#endif
|
|
#endif
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/file.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/socket.h>
|
|
#ifdef HAVE_SYS_SOCKIO_H
|
|
#include <sys/sockio.h>
|
|
#endif
|
|
#include <sys/time.h> /* concession to AIX */
|
|
|
|
struct mbuf;
|
|
struct rtentry;
|
|
|
|
#include <net/if.h>
|
|
#include <netinet/in.h>
|
|
#include <arpa/inet.h>
|
|
|
|
#include <ctype.h>
|
|
#include <errno.h>
|
|
#include <memory.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <ifaddrs.h>
|
|
|
|
#include "gnuc.h"
|
|
#ifdef HAVE_OS_PROTO_H
|
|
#include "os-proto.h"
|
|
#endif
|
|
|
|
#include "ifaddrlist.h"
|
|
#include "prog_ops.h"
|
|
|
|
/* Not all systems have IFF_LOOPBACK */
|
|
#ifdef IFF_LOOPBACK
|
|
#define ISLOOPBACK(p) ((p)->ifa_flags & IFF_LOOPBACK)
|
|
#else
|
|
#define ISLOOPBACK(p) (strcmp((p)->ifa_name, "lo0") == 0)
|
|
#endif
|
|
|
|
/*
|
|
* Return the interface list
|
|
*/
|
|
ssize_t
|
|
ifaddrlist(struct ifaddrlist **ipaddrp, char *errbuf, size_t buflen)
|
|
{
|
|
struct sockaddr_in *sin;
|
|
struct ifaddrs *ifap = NULL, *ifa;
|
|
struct ifaddrlist *al = NULL, *nal;
|
|
size_t i = 0, maxal = 10;
|
|
|
|
if (prog_getifaddrs(&ifap) != 0)
|
|
goto out;
|
|
|
|
if ((al = malloc(maxal * sizeof(*al))) == NULL)
|
|
goto out;
|
|
|
|
for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
|
|
if (ifa->ifa_addr->sa_family != AF_INET)
|
|
continue;
|
|
|
|
/* Must be up */
|
|
if ((ifa->ifa_flags & IFF_UP) == 0)
|
|
continue;
|
|
|
|
/*
|
|
* Must not be a loopback address (127/8)
|
|
*/
|
|
sin = (struct sockaddr_in *)ifa->ifa_addr;
|
|
if (ISLOOPBACK(ifa))
|
|
if (ntohl(sin->sin_addr.s_addr) == INADDR_LOOPBACK)
|
|
continue;
|
|
|
|
if (i == maxal) {
|
|
maxal <<= 1;
|
|
if ((nal = realloc(al, maxal * sizeof(*al))) == NULL)
|
|
goto out;
|
|
al = nal;
|
|
}
|
|
|
|
al[i].addr = sin->sin_addr.s_addr;
|
|
if ((al[i].device = strdup(ifa->ifa_name)) == NULL)
|
|
goto out;
|
|
i++;
|
|
}
|
|
if ((nal = realloc(al, i * sizeof(*al))) == NULL)
|
|
goto out;
|
|
freeifaddrs(ifap);
|
|
*ipaddrp = nal;
|
|
return (ssize_t)i;
|
|
out:
|
|
if (ifap)
|
|
freeifaddrs(ifap);
|
|
if (al) {
|
|
while (i > 0)
|
|
free(al[--i].device);
|
|
free(al);
|
|
}
|
|
(void)snprintf(errbuf, buflen, "%s: %s", __func__, strerror(errno));
|
|
return -1;
|
|
}
|