11541Srgrimes/*	$NetBSD: device.c,v 1.11 2009/11/17 18:58:07 drochner Exp $	*/
21541Srgrimes
31541Srgrimes/*
41541Srgrimes * Copyright (c) 1993-95 Mats O Jansson.  All rights reserved.
51541Srgrimes *
61541Srgrimes * Redistribution and use in source and binary forms, with or without
71541Srgrimes * modification, are permitted provided that the following conditions
81541Srgrimes * are met:
91541Srgrimes * 1. Redistributions of source code must retain the above copyright
101541Srgrimes *    notice, this list of conditions and the following disclaimer.
111541Srgrimes * 2. Redistributions in binary form must reproduce the above copyright
121541Srgrimes *    notice, this list of conditions and the following disclaimer in the
131541Srgrimes *    documentation and/or other materials provided with the distribution.
141541Srgrimes *
151541Srgrimes * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
161541Srgrimes * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
171541Srgrimes * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
181541Srgrimes * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
191541Srgrimes * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
201541Srgrimes * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
211541Srgrimes * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
221541Srgrimes * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
231541Srgrimes * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
241541Srgrimes * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
251541Srgrimes */
261541Srgrimes
271541Srgrimes#include <sys/cdefs.h>
281541Srgrimes#ifndef lint
291541Srgrimes__RCSID("$NetBSD: device.c,v 1.11 2009/11/17 18:58:07 drochner Exp $");
301541Srgrimes#endif
311541Srgrimes
321541Srgrimes#include "os.h"
3350477Speter#include "common.h"
341541Srgrimes#include "device.h"
351541Srgrimes#include "mopdef.h"
361541Srgrimes#include "pf.h"
371541Srgrimes#include "log.h"
381541Srgrimes
3974729Speterstruct	if_info *iflist;		/* Interface List		*/
4074740Speter
4174729Spetervoid	deviceOpen(const char *, u_short, int);
421549Srgrimes
4374729Speter#ifdef	DEV_NEW_CONF
4474740Speter/*
4574729Speter * Return ethernet address for interface
4674729Speter */
471541Srgrimes
481549Srgrimesvoid
491549SrgrimesdeviceEthAddr(const char *ifname, u_char *eaddr)
501549Srgrimes{
511549Srgrimes	struct sockaddr_dl *sdl;
521549Srgrimes	struct ifaddrs *ifap, *ifa;
531541Srgrimes
541541Srgrimes	if (getifaddrs(&ifap) != 0)
551541Srgrimes		mopLogErr("deviceEthAddr: getifaddrs");
561541Srgrimes
5755205Speter	for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
581541Srgrimes		sdl = (struct sockaddr_dl *)ifa->ifa_addr;
5974740Speter		if (sdl->sdl_family != AF_LINK || sdl->sdl_type != IFT_ETHER ||
601541Srgrimes		    sdl->sdl_alen != 6)
6174729Speter			continue;
6274729Speter		if (!strcmp(ifa->ifa_name, ifname)) {
6374729Speter			memmove((caddr_t)eaddr, (caddr_t)LLADDR(sdl), 6);
6474729Speter			freeifaddrs(ifap);
6574729Speter			return;
6674729Speter		}
6755205Speter	}
681541Srgrimes
691541Srgrimes	freeifaddrs(ifap);
70	mopLogErrX("deviceEthAddr: Never saw interface `%s'!", ifname);
71}
72#endif	/* DEV_NEW_CONF */
73
74void
75deviceOpen(const char *ifname, u_short proto, int trans)
76{
77	struct if_info *p, tmp;
78
79	strlcpy(tmp.if_name, ifname, sizeof(tmp.if_name));
80	tmp.iopen   = pfInit;
81
82	switch (proto) {
83	case MOP_K_PROTO_RC:
84		tmp.read = mopReadRC;
85		tmp.fd   = mopOpenRC(&tmp, trans);
86		break;
87	case MOP_K_PROTO_DL:
88		tmp.read = mopReadDL;
89		tmp.fd   = mopOpenDL(&tmp, trans);
90		break;
91	default:
92		break;
93	}
94
95	if (tmp.fd != -1) {
96		p = (struct if_info *)malloc(sizeof(*p));
97		if (p == 0)
98			mopLogErr("deviceOpen: malloc");
99
100		p->next = iflist;
101		iflist = p;
102
103		strlcpy(p->if_name, tmp.if_name, sizeof(p->if_name));
104		p->iopen   = tmp.iopen;
105		p->write   = pfWrite;
106		p->read    = tmp.read;
107		memset((char *)p->eaddr, 0, sizeof(p->eaddr));
108		p->fd      = tmp.fd;
109
110#ifdef	DEV_NEW_CONF
111		deviceEthAddr(p->if_name,&p->eaddr[0]);
112#else
113		p->eaddr[0]= tmp.eaddr[0];
114		p->eaddr[1]= tmp.eaddr[1];
115		p->eaddr[2]= tmp.eaddr[2];
116		p->eaddr[3]= tmp.eaddr[3];
117		p->eaddr[4]= tmp.eaddr[4];
118		p->eaddr[5]= tmp.eaddr[5];
119#endif	/* DEV_NEW_CONF */
120
121	}
122}
123
124void
125deviceInitOne(const char *ifname)
126{
127	char	interface[IFNAME_SIZE];
128	struct if_info *p;
129	int	trans;
130#ifdef _AIX
131	char	dev[IFNAME_SIZE];
132	int	unit,j;
133
134	unit = 0;
135	for (j = 0; j < strlen(ifname); j++) {
136		if (isalpha(ifname[j])) {
137			dev[j] = ifname[j];
138		} else {
139			if (isdigit(ifname[j])) {
140				unit = unit*10 + ifname[j] - '0';
141				dev[j] = '\0';
142			}
143		}
144	}
145
146	if ((strlen(dev) == 2) &&
147	    (dev[0] == 'e') &&
148	    ((dev[1] == 'n') || (dev[1] == 't'))) {
149		snprintf(interface, sizeof(interface), "ent%d\0", unit);
150	} else {
151		snprintf(interface, sizeof(interface), "%s%d\0", dev, unit);
152	}
153#else
154	snprintf(interface, sizeof(interface), "%s", ifname);
155#endif /* _AIX */
156
157	/* Ok, init it just once */
158
159	p = iflist;
160	for (p = iflist; p; p = p->next)  {
161		if (strcmp(p->if_name,interface) == 0) {
162			return;
163		}
164	}
165
166	if (!mopInteractive)
167		syslog(LOG_INFO, "Initialized %s", interface);
168
169	/* Ok, get transport information */
170
171	trans = pfTrans(interface);
172
173#ifndef NORC
174	/* Start with MOP Remote Console */
175
176	switch (trans) {
177	case TRANS_ETHER:
178		deviceOpen(interface,MOP_K_PROTO_RC,TRANS_ETHER);
179		break;
180	case TRANS_8023:
181		deviceOpen(interface,MOP_K_PROTO_RC,TRANS_8023);
182		break;
183	case TRANS_ETHER+TRANS_8023:
184		deviceOpen(interface,MOP_K_PROTO_RC,TRANS_ETHER);
185		deviceOpen(interface,MOP_K_PROTO_RC,TRANS_8023);
186		break;
187	case TRANS_ETHER+TRANS_8023+TRANS_AND:
188		deviceOpen(interface,MOP_K_PROTO_RC,TRANS_ETHER+TRANS_8023);
189		break;
190	}
191#endif
192
193#ifndef NODL
194	/* and next MOP Dump/Load */
195
196	switch (trans) {
197	case TRANS_ETHER:
198		deviceOpen(interface,MOP_K_PROTO_DL,TRANS_ETHER);
199		break;
200	case TRANS_8023:
201		deviceOpen(interface,MOP_K_PROTO_DL,TRANS_8023);
202		break;
203	case TRANS_ETHER+TRANS_8023:
204		deviceOpen(interface,MOP_K_PROTO_DL,TRANS_ETHER);
205		deviceOpen(interface,MOP_K_PROTO_DL,TRANS_8023);
206		break;
207	case TRANS_ETHER+TRANS_8023+TRANS_AND:
208		deviceOpen(interface,MOP_K_PROTO_DL,TRANS_ETHER+TRANS_8023);
209		break;
210	}
211#endif
212
213}
214
215/*
216 * Initialize all "candidate" interfaces that are in the system
217 * configuration list.  A "candidate" is up, not loopback and not
218 * point to point.
219 */
220void
221deviceInitAll(void)
222{
223#ifdef	DEV_NEW_CONF
224	struct sockaddr_dl *sdl;
225	struct ifaddrs *ifap, *ifa;
226
227	if (getifaddrs(&ifap) != 0)
228		mopLogErr("deviceInitAll: socket");
229
230	for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
231		sdl = (struct sockaddr_dl *)ifa->ifa_addr;
232		if (sdl->sdl_family != AF_LINK || sdl->sdl_type != IFT_ETHER ||
233		    sdl->sdl_alen != 6)
234			continue;
235		if ((ifa->ifa_flags &
236		    (IFF_UP | IFF_LOOPBACK | IFF_POINTOPOINT)) != IFF_UP)
237			continue;
238		deviceInitOne(ifa->ifa_name);
239	}
240
241	freeifaddrs(ifap);
242#else
243	struct ifaddrs *ifap, *ifa;
244
245	if (getifaddrs(&ifap) != 0)
246		mopLogErr("deviceInitAll: old socket");
247
248	for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
249		if (/*(ifa->ifa_flags & IFF_UP) == 0 ||*/
250		    ifa->ifa_flags & IFF_LOOPBACK ||
251		    ifa->ifa_flags & IFF_POINTOPOINT)
252			continue;
253		deviceInitOne(ifa->ifa_name);
254	}
255
256	freeifaddrs(ifap);
257#endif /* DEV_NEW_CONF */
258}
259