313 lines
8.0 KiB
C
313 lines
8.0 KiB
C
/* $NetBSD: device.c,v 1.6 2003/04/20 00:17:22 christos 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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Mats O Jansson.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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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 <sys/cdefs.h>
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#ifndef lint
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__RCSID("$NetBSD: device.c,v 1.6 2003/04/20 00:17:22 christos Exp $");
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#endif
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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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#include "log.h"
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struct if_info *iflist; /* Interface List */
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void deviceOpen __P((char *, u_short, int));
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#ifdef DEV_NEW_CONF
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/*
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* Return ethernet adress for interface
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*/
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void
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deviceEthAddr(ifname, eaddr)
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char *ifname;
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u_char *eaddr;
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{
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char inbuf[8192];
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struct ifconf ifc;
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struct ifreq *ifr;
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struct sockaddr_dl *sdl;
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int fd;
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int i, len;
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/* We cannot use SIOCGIFADDR on the BPF descriptor.
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We must instead get all the interfaces with SIOCGIFCONF
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and find the right one. */
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/* Use datagram socket to get Ethernet address. */
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if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0)
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mopLogErr("deviceEthAddr: socket");
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ifc.ifc_len = sizeof(inbuf);
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ifc.ifc_buf = inbuf;
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if (ioctl(fd, SIOCGIFCONF, (caddr_t)&ifc) < 0 ||
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ifc.ifc_len < sizeof(struct ifreq))
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mopLogErr("deviceEthAddr: SIOGIFCONF");
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ifr = ifc.ifc_req;
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for (i = 0; i < ifc.ifc_len;
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i += len, ifr = (struct ifreq *)((caddr_t)ifr + len)) {
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len = sizeof(ifr->ifr_name) + ifr->ifr_addr.sa_len;
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sdl = (struct sockaddr_dl *)&ifr->ifr_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 (!strncmp(ifr->ifr_name, ifname, sizeof(ifr->ifr_name))) {
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memmove((caddr_t)eaddr, (caddr_t)LLADDR(sdl), 6);
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return;
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}
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}
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mopLogErrX("deviceEthAddr: Never saw interface `%s'!", ifname);
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}
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#endif /* DEV_NEW_CONF */
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void
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deviceOpen(ifname, proto, trans)
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char *ifname;
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u_short proto;
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int trans;
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{
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struct if_info *p, tmp;
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strlcpy(tmp.if_name, ifname, sizeof(tmp.if_name));
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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 = (struct if_info *)malloc(sizeof(*p));
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if (p == 0)
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mopLogErr("deviceOpen: malloc");
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p->next = iflist;
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iflist = p;
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strcpy(p->if_name,tmp.if_name);
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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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memset((char *)p->eaddr, 0, 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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}
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}
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void
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deviceInitOne(ifname)
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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(ifname[j])) {
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dev[j] = ifname[j];
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} else {
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if (isdigit(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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}
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if ((strlen(dev) == 2) &&
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(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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}
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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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}
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}
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if (!mopInteractive)
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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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char inbuf[8192];
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struct ifconf ifc;
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struct ifreq *ifr;
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struct sockaddr_dl *sdl;
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int fd;
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int i, len;
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if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0)
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mopLogErr("deviceInitAll: socket");
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ifc.ifc_len = sizeof(inbuf);
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ifc.ifc_buf = inbuf;
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if (ioctl(fd, SIOCGIFCONF, (caddr_t)&ifc) < 0 ||
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ifc.ifc_len < sizeof(struct ifreq))
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mopLogErr("deviceInitAll: SIOCGIFCONF");
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ifr = ifc.ifc_req;
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for (i = 0; i < ifc.ifc_len;
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i += len, ifr = (struct ifreq *)((caddr_t)ifr + len)) {
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len = sizeof(ifr->ifr_name) + ifr->ifr_addr.sa_len;
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sdl = (struct sockaddr_dl *)&ifr->ifr_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 (ioctl(fd, SIOCGIFFLAGS, (caddr_t)ifr) < 0) {
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mopLogWarn("deviceInitAll: SIOCGIFFLAGS");
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continue;
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}
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if ((ifr->ifr_flags &
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(IFF_UP | IFF_LOOPBACK | IFF_POINTOPOINT)) != IFF_UP)
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continue;
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deviceInitOne(ifr->ifr_name);
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}
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(void) close(fd);
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#else
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int fd;
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int n;
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struct ifreq ibuf[8], *ifrp;
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struct ifconf ifc;
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if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0)
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mopLogErr("deviceInitAll: old socket");
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ifc.ifc_len = sizeof ibuf;
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ifc.ifc_buf = (caddr_t)ibuf;
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if (ioctl(fd, SIOCGIFCONF, (char *)&ifc) < 0 ||
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ifc.ifc_len < sizeof(struct ifreq))
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mopLogErr("deviceInitAll: old SIOCGIFCONF");
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ifrp = ibuf;
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n = ifc.ifc_len / sizeof(*ifrp);
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for (; --n >= 0; ++ifrp) {
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if (ioctl(fd, SIOCGIFFLAGS, (char *)ifrp) < 0) {
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continue;
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}
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if (/*(ifrp->ifr_flags & IFF_UP) == 0 ||*/
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ifrp->ifr_flags & IFF_LOOPBACK ||
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ifrp->ifr_flags & IFF_POINTOPOINT)
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continue;
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deviceInitOne(ifrp->ifr_name);
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}
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(void) close(fd);
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#endif /* DEV_NEW_CONF */
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}
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