[apple/network_cmds.git] / traceroute.tproj / ifaddrlist.c

/*
 * Copyright (c) 2009 Apple Inc. All rights reserved.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
 *
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. The rights granted to you under the License
 * may not be used to create, or enable the creation or redistribution of,
 * unlawful or unlicensed copies of an Apple operating system, or to
 * circumvent, violate, or enable the circumvention or violation of, any
 * terms of an Apple operating system software license agreement.
 *
 * Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this file.
 *
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
 */

/*
 * 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/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 */

#if __STDC__
struct mbuf;
struct rtentry;
#endif

#include <net/if.h>
#include <netinet/in.h>

#include <ctype.h>
#include <errno.h>
#include <memory.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#include "gnuc.h"
#ifdef HAVE_OS_PROTO_H
#include "os-proto.h"
#endif

#include "ifaddrlist.h"

/*
 * Return the interface list
 */
int
ifaddrlist(register struct ifaddrlist **ipaddrp, register char *errbuf, size_t errbuflen)
{
	register int fd, nipaddr;
#ifdef HAVE_SOCKADDR_SA_LEN
	register int n;
#endif
	register struct ifreq *ifrp, *ifend, *ifnext, *mp;
	register struct sockaddr_in *sin;
	register struct ifaddrlist *al;
	struct ifconf ifc;
	struct ifreq ibuf[(32 * 1024) / sizeof(struct ifreq)], ifr;
#define MAX_IPADDR (sizeof(ibuf) / sizeof(ibuf[0]))
	static struct ifaddrlist ifaddrlist[MAX_IPADDR];
	char device[sizeof(ifr.ifr_name) + 1];

	fd = socket(AF_INET, SOCK_DGRAM, 0);
	if (fd < 0) {
		(void)snprintf(errbuf, errbuflen, "socket: %s", strerror(errno));
		return (-1);
	}
	ifc.ifc_len = sizeof(ibuf);
	ifc.ifc_buf = (caddr_t)ibuf;

	if (ioctl(fd, SIOCGIFCONF, (char *)&ifc) < 0 ||
	    ifc.ifc_len < sizeof(struct ifreq)) {
		if (errno == EINVAL)
			(void)snprintf(errbuf, sizeof(errbuf),
			    "SIOCGIFCONF: ifreq struct too small (%d bytes)",
			    (int)sizeof(ibuf));
		else
			(void)snprintf(errbuf, errbuflen, "SIOCGIFCONF: %s",
			    strerror(errno));
		(void)close(fd);
		return (-1);
	}
	ifrp = ibuf;
	ifend = (struct ifreq *)((char *)ibuf + ifc.ifc_len);

	al = ifaddrlist;
	mp = NULL;
	nipaddr = 0;
	for (; ifrp < ifend; ifrp = ifnext) {
#ifdef HAVE_SOCKADDR_SA_LEN
		n = ifrp->ifr_addr.sa_len + sizeof(ifrp->ifr_name);
		if (n < sizeof(*ifrp))
			ifnext = ifrp + 1;
		else
			ifnext = (struct ifreq *)((char *)ifrp + n);
		if (ifrp->ifr_addr.sa_family != AF_INET)
			continue;
#else
		ifnext = ifrp + 1;
#endif
		/*
		 * Need a template to preserve address info that is
		 * used below to locate the next entry.  (Otherwise,
		 * SIOCGIFFLAGS stomps over it because the requests
		 * are returned in a union.)
		 */
		strncpy(ifr.ifr_name, ifrp->ifr_name, sizeof(ifr.ifr_name));
		if (ioctl(fd, SIOCGIFFLAGS, (char *)&ifr) < 0) {
			if (errno == ENXIO)
				continue;
			(void)snprintf(errbuf, errbuflen, "SIOCGIFFLAGS: %.*s: %s",
			    (int)sizeof(ifr.ifr_name), ifr.ifr_name,
			    strerror(errno));
			(void)close(fd);
			return (-1);
		}

		/* Must be up */
		if ((ifr.ifr_flags & IFF_UP) == 0)
			continue;


		(void)strncpy(device, ifr.ifr_name, sizeof(ifr.ifr_name));
		device[sizeof(device) - 1] = '\0';
#ifdef sun
		/* Ignore sun virtual interfaces */
		if (strchr(device, ':') != NULL)
			continue;
#endif
		if (ioctl(fd, SIOCGIFADDR, (char *)&ifr) < 0) {
			(void)snprintf(errbuf, errbuflen, "SIOCGIFADDR: %s: %s",
			    device, strerror(errno));
			(void)close(fd);
			return (-1);
		}

		if (nipaddr >= MAX_IPADDR) {
			(void)snprintf(errbuf, errbuflen, "Too many interfaces (%d)",
			    (int)MAX_IPADDR);
			(void)close(fd);
			return (-1);
		}
		sin = (struct sockaddr_in *)&ifr.ifr_addr;
		al->addr = sin->sin_addr.s_addr;
		al->device = strdup(device);
		++al;
		++nipaddr;
	}
	(void)close(fd);

	*ipaddrp = ifaddrlist;
	return (nipaddr);
}
Commit	Line	Data
fdfd5971 A	1	/*
	2	* Copyright (c) 2009 Apple Inc. All rights reserved.
	3	*
	4	* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
	5	*
	6	* This file contains Original Code and/or Modifications of Original Code
	7	* as defined in and that are subject to the Apple Public Source License
	8	* Version 2.0 (the 'License'). You may not use this file except in
	9	* compliance with the License. The rights granted to you under the License
	10	* may not be used to create, or enable the creation or redistribution of,
	11	* unlawful or unlicensed copies of an Apple operating system, or to
	12	* circumvent, violate, or enable the circumvention or violation of, any
	13	* terms of an Apple operating system software license agreement.
	14	*
	15	* Please obtain a copy of the License at
	16	* http://www.opensource.apple.com/apsl/ and read it before using this file.
	17	*
	18	* The Original Code and all software distributed under the License are
	19	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	20	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	21	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	22	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	23	* Please see the License for the specific language governing rights and
	24	* limitations under the License.
	25	*
	26	* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
	27	*/
	28
2b484d24 A	29	/*
	30	* Copyright (c) 1997, 1998, 1999, 2000
	31	* The Regents of the University of California. All rights reserved.
	32	*
	33	* Redistribution and use in source and binary forms, with or without
	34	* modification, are permitted provided that the following conditions
	35	* are met:
	36	* 1. Redistributions of source code must retain the above copyright
	37	* notice, this list of conditions and the following disclaimer.
	38	* 2. Redistributions in binary form must reproduce the above copyright
	39	* notice, this list of conditions and the following disclaimer in the
	40	* documentation and/or other materials provided with the distribution.
	41	* 3. All advertising materials mentioning features or use of this software
	42	* must display the following acknowledgement:
	43	* This product includes software developed by the Computer Systems
	44	* Engineering Group at Lawrence Berkeley Laboratory.
	45	* 4. Neither the name of the University nor of the Laboratory may be used
	46	* to endorse or promote products derived from this software without
	47	* specific prior written permission.
	48	*
	49	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	50	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	51	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	52	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	53	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	54	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	55	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	56	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	57	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	58	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	59	* SUCH DAMAGE.
	60	*/
	61
2b484d24 A	62	#include <sys/param.h>
	63	#include <sys/file.h>
	64	#include <sys/ioctl.h>
	65	#include <sys/socket.h>
	66	#ifdef HAVE_SYS_SOCKIO_H
	67	#include <sys/sockio.h>
	68	#endif
	69	#include <sys/time.h> /* concession to AIX */
	70
	71	#if __STDC__
	72	struct mbuf;
	73	struct rtentry;
	74	#endif
	75
	76	#include <net/if.h>
	77	#include <netinet/in.h>
	78
	79	#include <ctype.h>
	80	#include <errno.h>
	81	#include <memory.h>
	82	#include <stdio.h>
	83	#include <stdlib.h>
	84	#include <string.h>
	85	#include <unistd.h>
	86
	87	#include "gnuc.h"
	88	#ifdef HAVE_OS_PROTO_H
	89	#include "os-proto.h"
	90	#endif
	91
	92	#include "ifaddrlist.h"
	93
	94	/*
	95	* Return the interface list
	96	*/
	97	int
fdfd5971	98	ifaddrlist(register struct ifaddrlist *ipaddrp, register char errbuf, size_t errbuflen)
2b484d24 A	99	{
	100	register int fd, nipaddr;
	101	#ifdef HAVE_SOCKADDR_SA_LEN
	102	register int n;
	103	#endif
	104	register struct ifreq ifrp, ifend, ifnext, mp;
	105	register struct sockaddr_in *sin;
	106	register struct ifaddrlist *al;
	107	struct ifconf ifc;
	108	struct ifreq ibuf[(32 * 1024) / sizeof(struct ifreq)], ifr;
	109	#define MAX_IPADDR (sizeof(ibuf) / sizeof(ibuf[0]))
	110	static struct ifaddrlist ifaddrlist[MAX_IPADDR];
	111	char device[sizeof(ifr.ifr_name) + 1];
	112
	113	fd = socket(AF_INET, SOCK_DGRAM, 0);
	114	if (fd < 0) {
fdfd5971	115	(void)snprintf(errbuf, errbuflen, "socket: %s", strerror(errno));
2b484d24 A	116	return (-1);
	117	}
	118	ifc.ifc_len = sizeof(ibuf);
	119	ifc.ifc_buf = (caddr_t)ibuf;
	120
	121	if (ioctl(fd, SIOCGIFCONF, (char *)&ifc) < 0 \|\|
	122	ifc.ifc_len < sizeof(struct ifreq)) {
	123	if (errno == EINVAL)
fdfd5971	124	(void)snprintf(errbuf, sizeof(errbuf),
2b484d24	125	"SIOCGIFCONF: ifreq struct too small (%d bytes)",
b8dff150	126	(int)sizeof(ibuf));
2b484d24	127	else
fdfd5971	128	(void)snprintf(errbuf, errbuflen, "SIOCGIFCONF: %s",
2b484d24 A	129	strerror(errno));
	130	(void)close(fd);
	131	return (-1);
	132	}
	133	ifrp = ibuf;
	134	ifend = (struct ifreq )((char )ibuf + ifc.ifc_len);
	135
	136	al = ifaddrlist;
	137	mp = NULL;
	138	nipaddr = 0;
	139	for (; ifrp < ifend; ifrp = ifnext) {
	140	#ifdef HAVE_SOCKADDR_SA_LEN
	141	n = ifrp->ifr_addr.sa_len + sizeof(ifrp->ifr_name);
	142	if (n < sizeof(*ifrp))
	143	ifnext = ifrp + 1;
	144	else
	145	ifnext = (struct ifreq )((char )ifrp + n);
	146	if (ifrp->ifr_addr.sa_family != AF_INET)
	147	continue;
	148	#else
	149	ifnext = ifrp + 1;
	150	#endif
	151	/*
	152	* Need a template to preserve address info that is
	153	* used below to locate the next entry. (Otherwise,
	154	* SIOCGIFFLAGS stomps over it because the requests
	155	* are returned in a union.)
	156	*/
	157	strncpy(ifr.ifr_name, ifrp->ifr_name, sizeof(ifr.ifr_name));
	158	if (ioctl(fd, SIOCGIFFLAGS, (char *)&ifr) < 0) {
	159	if (errno == ENXIO)
	160	continue;
fdfd5971	161	(void)snprintf(errbuf, errbuflen, "SIOCGIFFLAGS: %.*s: %s",
2b484d24 A	162	(int)sizeof(ifr.ifr_name), ifr.ifr_name,
	163	strerror(errno));
	164	(void)close(fd);
	165	return (-1);
	166	}
	167
	168	/* Must be up */
	169	if ((ifr.ifr_flags & IFF_UP) == 0)
	170	continue;
	171
	172
	173	(void)strncpy(device, ifr.ifr_name, sizeof(ifr.ifr_name));
	174	device[sizeof(device) - 1] = '\0';
	175	#ifdef sun
	176	/* Ignore sun virtual interfaces */
	177	if (strchr(device, ':') != NULL)
	178	continue;
	179	#endif
	180	if (ioctl(fd, SIOCGIFADDR, (char *)&ifr) < 0) {
fdfd5971	181	(void)snprintf(errbuf, errbuflen, "SIOCGIFADDR: %s: %s",
2b484d24 A	182	device, strerror(errno));
	183	(void)close(fd);
	184	return (-1);
	185	}
	186
	187	if (nipaddr >= MAX_IPADDR) {
fdfd5971	188	(void)snprintf(errbuf, errbuflen, "Too many interfaces (%d)",
b8dff150	189	(int)MAX_IPADDR);
2b484d24 A	190	(void)close(fd);
	191	return (-1);
	192	}
	193	sin = (struct sockaddr_in *)&ifr.ifr_addr;
	194	al->addr = sin->sin_addr.s_addr;
	195	al->device = strdup(device);
	196	++al;
	197	++nipaddr;
	198	}
	199	(void)close(fd);
	200
	201	*ipaddrp = ifaddrlist;
	202	return (nipaddr);
	203	}