GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: usr.sbin/mopd/moptrace/../common/device.c Lines: 0 77 0.0 %
Date: 2017-11-07 Branches: 0 45 0.0 %

Line Branch Exec Source
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/*	$OpenBSD: device.c,v 1.17 2017/01/21 08:33:51 krw Exp $ */
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/*
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 * Copyright (c) 1993-95 Mats O Jansson.  All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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#include "os.h"
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#include "common.h"
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#include "device.h"
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#include "mopdef.h"
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#include "pf.h"
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struct if_info	*iflist;		/* Interface List		*/
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#ifdef	DEV_NEW_CONF
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/*
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 * Return ethernet address for interface
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 */
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void
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deviceEthAddr(char *ifname, u_char *eaddr)
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{
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	struct sockaddr_dl	*sdl;
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	struct ifaddrs		*ifap, *ifa;
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	if (getifaddrs(&ifap) != 0) {
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		syslog(LOG_ERR, "deviceEthAddr: getifaddrs: %m");
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		exit(1);
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	}
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	for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
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		sdl = (struct sockaddr_dl *)ifa->ifa_addr;
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		if (sdl->sdl_family != AF_LINK || sdl->sdl_type != IFT_ETHER ||
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		    sdl->sdl_alen != 6)
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			continue;
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		if (!strcmp(ifa->ifa_name, ifname)) {
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			bcopy(LLADDR(sdl), eaddr, 6);
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			freeifaddrs(ifap);
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			return;
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		}
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	}
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	syslog(LOG_ERR, "deviceEthAddr: Never saw interface `%s'!", ifname);
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	exit(1);
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}
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#endif	/* DEV_NEW_CONF */
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void
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deviceOpen(char *ifname, u_short proto, int trans)
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{
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	struct if_info	*p, tmp;
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	strncpy(tmp.if_name, ifname, sizeof(tmp.if_name) - 1);
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	tmp.if_name[sizeof(tmp.if_name) - 1] = 0;
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	tmp.iopen = pfInit;
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	switch (proto) {
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	case MOP_K_PROTO_RC:
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		tmp.read = mopReadRC;
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		tmp.fd   = mopOpenRC(&tmp, trans);
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		break;
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	case MOP_K_PROTO_DL:
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		tmp.read = mopReadDL;
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		tmp.fd   = mopOpenDL(&tmp, trans);
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		break;
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	default:
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		break;
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	}
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	if (tmp.fd != -1) {
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		p = malloc(sizeof(*p));
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		if (p == 0) {
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			syslog(LOG_ERR, "deviceOpen: malloc: %m");
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			exit(1);
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		}
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		p->next = iflist;
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		iflist = p;
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		strlcpy(p->if_name, tmp.if_name, IFNAME_SIZE);
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		p->iopen   = tmp.iopen;
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		p->write   = pfWrite;
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		p->read    = tmp.read;
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		bzero(p->eaddr, sizeof(p->eaddr));
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		p->fd      = tmp.fd;
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#ifdef	DEV_NEW_CONF
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		deviceEthAddr(p->if_name, &p->eaddr[0]);
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#else
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		p->eaddr[0] = tmp.eaddr[0];
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		p->eaddr[1] = tmp.eaddr[1];
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		p->eaddr[2] = tmp.eaddr[2];
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		p->eaddr[3] = tmp.eaddr[3];
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		p->eaddr[4] = tmp.eaddr[4];
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		p->eaddr[5] = tmp.eaddr[5];
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#endif	/* DEV_NEW_CONF */
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#ifdef LINUX2_PF
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		{
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			int s;
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			s = socket(AF_INET, SOCK_DGRAM, 0);
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			pfEthAddr(s, p->if_name, &p->eaddr[0]);
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			close(s);
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		}
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#endif
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	}
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}
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void
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deviceInitOne(char *ifname)
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{
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	char	interface[IFNAME_SIZE];
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	struct if_info *p;
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	int	trans;
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#ifdef _AIX
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	char	dev[IFNAME_SIZE];
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	int	unit,j;
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	unit = 0;
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	for (j = 0; j < strlen(ifname); j++) {
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		if (isalpha((unsigned char)ifname[j]))
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			dev[j] = ifname[j];
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		else
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			if (isdigit((unsigned char)ifname[j])) {
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				unit = unit * 10 + ifname[j] - '0';
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				dev[j] = '\0';
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			}
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	}
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	if ((strlen(dev) == 2) && (dev[0] == 'e') &&
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	    ((dev[1] == 'n') || (dev[1] == 't')))
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		snprintf(interface, sizeof(interface), "ent%d\0", unit);
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	else
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		snprintf(interface, sizeof(interface), "%s%d\0", dev, unit);
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#else
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	snprintf(interface, sizeof(interface), "%s", ifname);
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#endif /* _AIX */
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	/* Ok, init it just once */
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	p = iflist;
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	for (p = iflist; p; p = p->next)
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		if (strcmp(p->if_name, interface) == 0)
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			return;
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	syslog(LOG_INFO, "Initialized %s", interface);
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	/* Ok, get transport information */
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	trans = pfTrans(interface);
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#ifndef NORC
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	/* Start with MOP Remote Console */
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	switch (trans) {
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	case TRANS_ETHER:
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		deviceOpen(interface, MOP_K_PROTO_RC, TRANS_ETHER);
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		break;
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	case TRANS_8023:
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		deviceOpen(interface, MOP_K_PROTO_RC, TRANS_8023);
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		break;
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	case TRANS_ETHER + TRANS_8023:
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		deviceOpen(interface, MOP_K_PROTO_RC, TRANS_ETHER);
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		deviceOpen(interface, MOP_K_PROTO_RC, TRANS_8023);
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		break;
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	case TRANS_ETHER + TRANS_8023 + TRANS_AND:
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		deviceOpen(interface, MOP_K_PROTO_RC, TRANS_ETHER + TRANS_8023);
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		break;
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	}
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#endif
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#ifndef NODL
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	/* and next MOP Dump/Load */
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	switch (trans) {
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	case TRANS_ETHER:
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		deviceOpen(interface, MOP_K_PROTO_DL, TRANS_ETHER);
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		break;
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	case TRANS_8023:
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		deviceOpen(interface, MOP_K_PROTO_DL, TRANS_8023);
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		break;
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	case TRANS_ETHER + TRANS_8023:
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		deviceOpen(interface, MOP_K_PROTO_DL, TRANS_ETHER);
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		deviceOpen(interface, MOP_K_PROTO_DL, TRANS_8023);
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		break;
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	case TRANS_ETHER + TRANS_8023 + TRANS_AND:
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		deviceOpen(interface, MOP_K_PROTO_DL, TRANS_ETHER + TRANS_8023);
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		break;
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	}
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#endif
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}
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/*
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 * Initialize all "candidate" interfaces that are in the system
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 * configuration list.  A "candidate" is up, not loopback and not
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 * point to point.
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 */
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void
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deviceInitAll()
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{
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#ifdef DEV_NEW_CONF
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	struct sockaddr_dl	*sdl;
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	struct ifaddrs		*ifap, *ifa;
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	if (getifaddrs(&ifap) != 0) {
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		syslog(LOG_ERR, "deviceInitAll: getifaddrs: %m");
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		exit(1);
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	}
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	for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
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		sdl = (struct sockaddr_dl *)ifa->ifa_addr;
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		if (sdl->sdl_family != AF_LINK || sdl->sdl_type != IFT_ETHER ||
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		    sdl->sdl_alen != 6)
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			continue;
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		if ((ifa->ifa_flags &
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		    (IFF_UP | IFF_LOOPBACK | IFF_POINTOPOINT)) != IFF_UP)
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			continue;
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		deviceInitOne(ifa->ifa_name);
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	}
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	freeifaddrs(ifap);
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#else
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	struct ifaddrs	*ifap, *ifa;
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	if (getifaddrs(&ifap) != 0) {
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		syslog(LOG_ERR, "deviceInitAll: getifaddrs: %m");
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		exit(1);
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	}
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	for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
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		if (/*(ifa->ifa_flags & IFF_UP) == 0 ||*/
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		    ifa->ifa_flags & IFF_LOOPBACK ||
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		    ifa->ifa_flags & IFF_POINTOPOINT)
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			continue;
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		deviceInitOne(ifa->ifa_name);
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	}
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	freeifaddrs(ifap);
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#endif
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}