1 /* $NetBSD: device.c,v 1.5 2002/08/22 07:18:42 itojun Exp $ */ 2 3 /* 4 * Copyright (c) 1993-95 Mats O Jansson. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by Mats O Jansson. 17 * 4. The name of the author may not be used to endorse or promote products 18 * derived from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #ifndef lint 34 __RCSID("$NetBSD: device.c,v 1.5 2002/08/22 07:18:42 itojun Exp $"); 35 #endif 36 37 #include "os.h" 38 #include "common.h" 39 #include "device.h" 40 #include "mopdef.h" 41 #include "pf.h" 42 43 struct if_info *iflist; /* Interface List */ 44 45 void deviceOpen __P((char *, u_short, int)); 46 47 #ifdef DEV_NEW_CONF 48 /* 49 * Return ethernet adress for interface 50 */ 51 52 void 53 deviceEthAddr(ifname, eaddr) 54 char *ifname; 55 u_char *eaddr; 56 { 57 char inbuf[8192]; 58 struct ifconf ifc; 59 struct ifreq *ifr; 60 struct sockaddr_dl *sdl; 61 int fd; 62 int i, len; 63 64 /* We cannot use SIOCGIFADDR on the BPF descriptor. 65 We must instead get all the interfaces with SIOCGIFCONF 66 and find the right one. */ 67 68 /* Use datagram socket to get Ethernet address. */ 69 if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) { 70 syslog(LOG_ERR, "deviceEthAddr: socket: %m"); 71 exit(1); 72 } 73 74 ifc.ifc_len = sizeof(inbuf); 75 ifc.ifc_buf = inbuf; 76 if (ioctl(fd, SIOCGIFCONF, (caddr_t)&ifc) < 0 || 77 ifc.ifc_len < sizeof(struct ifreq)) { 78 syslog(LOG_ERR, "deviceEthAddr: SIOGIFCONF: %m"); 79 exit(1); 80 } 81 ifr = ifc.ifc_req; 82 for (i = 0; i < ifc.ifc_len; 83 i += len, ifr = (struct ifreq *)((caddr_t)ifr + len)) { 84 len = sizeof(ifr->ifr_name) + ifr->ifr_addr.sa_len; 85 sdl = (struct sockaddr_dl *)&ifr->ifr_addr; 86 if (sdl->sdl_family != AF_LINK || sdl->sdl_type != IFT_ETHER || 87 sdl->sdl_alen != 6) 88 continue; 89 if (!strncmp(ifr->ifr_name, ifname, sizeof(ifr->ifr_name))) { 90 memmove((caddr_t)eaddr, (caddr_t)LLADDR(sdl), 6); 91 return; 92 } 93 } 94 95 syslog(LOG_ERR, "deviceEthAddr: Never saw interface `%s'!", ifname); 96 exit(1); 97 } 98 #endif /* DEV_NEW_CONF */ 99 100 void 101 deviceOpen(ifname, proto, trans) 102 char *ifname; 103 u_short proto; 104 int trans; 105 { 106 struct if_info *p, tmp; 107 108 strlcpy(tmp.if_name, ifname, sizeof(tmp.if_name)); 109 tmp.iopen = pfInit; 110 111 switch (proto) { 112 case MOP_K_PROTO_RC: 113 tmp.read = mopReadRC; 114 tmp.fd = mopOpenRC(&tmp, trans); 115 break; 116 case MOP_K_PROTO_DL: 117 tmp.read = mopReadDL; 118 tmp.fd = mopOpenDL(&tmp, trans); 119 break; 120 default: 121 break; 122 } 123 124 if (tmp.fd != -1) { 125 126 p = (struct if_info *)malloc(sizeof(*p)); 127 if (p == 0) { 128 syslog(LOG_ERR, "deviceOpen: malloc: %m"); 129 exit(1); 130 } 131 132 p->next = iflist; 133 iflist = p; 134 135 strcpy(p->if_name,tmp.if_name); 136 p->iopen = tmp.iopen; 137 p->write = pfWrite; 138 p->read = tmp.read; 139 memset((char *)p->eaddr, 0, sizeof(p->eaddr)); 140 p->fd = tmp.fd; 141 142 #ifdef DEV_NEW_CONF 143 deviceEthAddr(p->if_name,&p->eaddr[0]); 144 #else 145 p->eaddr[0]= tmp.eaddr[0]; 146 p->eaddr[1]= tmp.eaddr[1]; 147 p->eaddr[2]= tmp.eaddr[2]; 148 p->eaddr[3]= tmp.eaddr[3]; 149 p->eaddr[4]= tmp.eaddr[4]; 150 p->eaddr[5]= tmp.eaddr[5]; 151 #endif /* DEV_NEW_CONF */ 152 153 } 154 } 155 156 void 157 deviceInitOne(ifname) 158 char *ifname; 159 { 160 char interface[IFNAME_SIZE]; 161 struct if_info *p; 162 int trans; 163 #ifdef _AIX 164 char dev[IFNAME_SIZE]; 165 int unit,j; 166 167 unit = 0; 168 for (j = 0; j < strlen(ifname); j++) { 169 if (isalpha(ifname[j])) { 170 dev[j] = ifname[j]; 171 } else { 172 if (isdigit(ifname[j])) { 173 unit = unit*10 + ifname[j] - '0'; 174 dev[j] = '\0'; 175 } 176 } 177 } 178 179 if ((strlen(dev) == 2) && 180 (dev[0] == 'e') && 181 ((dev[1] == 'n') || (dev[1] == 't'))) { 182 snprintf(interface, sizeof(interface), "ent%d\0", unit); 183 } else { 184 snprintf(interface, sizeof(interface), "%s%d\0", dev, unit); 185 } 186 #else 187 snprintf(interface, sizeof(interface), "%s", ifname); 188 #endif /* _AIX */ 189 190 /* Ok, init it just once */ 191 192 p = iflist; 193 for (p = iflist; p; p = p->next) { 194 if (strcmp(p->if_name,interface) == 0) { 195 return; 196 } 197 } 198 199 syslog(LOG_INFO, "Initialized %s", interface); 200 201 /* Ok, get transport information */ 202 203 trans = pfTrans(interface); 204 205 #ifndef NORC 206 /* Start with MOP Remote Console */ 207 208 switch (trans) { 209 case TRANS_ETHER: 210 deviceOpen(interface,MOP_K_PROTO_RC,TRANS_ETHER); 211 break; 212 case TRANS_8023: 213 deviceOpen(interface,MOP_K_PROTO_RC,TRANS_8023); 214 break; 215 case TRANS_ETHER+TRANS_8023: 216 deviceOpen(interface,MOP_K_PROTO_RC,TRANS_ETHER); 217 deviceOpen(interface,MOP_K_PROTO_RC,TRANS_8023); 218 break; 219 case TRANS_ETHER+TRANS_8023+TRANS_AND: 220 deviceOpen(interface,MOP_K_PROTO_RC,TRANS_ETHER+TRANS_8023); 221 break; 222 } 223 #endif 224 225 #ifndef NODL 226 /* and next MOP Dump/Load */ 227 228 switch (trans) { 229 case TRANS_ETHER: 230 deviceOpen(interface,MOP_K_PROTO_DL,TRANS_ETHER); 231 break; 232 case TRANS_8023: 233 deviceOpen(interface,MOP_K_PROTO_DL,TRANS_8023); 234 break; 235 case TRANS_ETHER+TRANS_8023: 236 deviceOpen(interface,MOP_K_PROTO_DL,TRANS_ETHER); 237 deviceOpen(interface,MOP_K_PROTO_DL,TRANS_8023); 238 break; 239 case TRANS_ETHER+TRANS_8023+TRANS_AND: 240 deviceOpen(interface,MOP_K_PROTO_DL,TRANS_ETHER+TRANS_8023); 241 break; 242 } 243 #endif 244 245 } 246 247 /* 248 * Initialize all "candidate" interfaces that are in the system 249 * configuration list. A "candidate" is up, not loopback and not 250 * point to point. 251 */ 252 void 253 deviceInitAll() 254 { 255 #ifdef DEV_NEW_CONF 256 char inbuf[8192]; 257 struct ifconf ifc; 258 struct ifreq *ifr; 259 struct sockaddr_dl *sdl; 260 int fd; 261 int i, len; 262 263 if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) { 264 syslog(LOG_ERR, "deviceInitAll: socket: %m"); 265 exit(1); 266 } 267 268 ifc.ifc_len = sizeof(inbuf); 269 ifc.ifc_buf = inbuf; 270 if (ioctl(fd, SIOCGIFCONF, (caddr_t)&ifc) < 0 || 271 ifc.ifc_len < sizeof(struct ifreq)) { 272 syslog(LOG_ERR, "deviceInitAll: SIOCGIFCONF: %m"); 273 exit(1); 274 } 275 ifr = ifc.ifc_req; 276 for (i = 0; i < ifc.ifc_len; 277 i += len, ifr = (struct ifreq *)((caddr_t)ifr + len)) { 278 len = sizeof(ifr->ifr_name) + ifr->ifr_addr.sa_len; 279 sdl = (struct sockaddr_dl *)&ifr->ifr_addr; 280 if (sdl->sdl_family != AF_LINK || sdl->sdl_type != IFT_ETHER || 281 sdl->sdl_alen != 6) 282 continue; 283 if (ioctl(fd, SIOCGIFFLAGS, (caddr_t)ifr) < 0) { 284 syslog(LOG_ERR, "deviceInitAll: SIOCGIFFLAGS: %m"); 285 continue; 286 } 287 if ((ifr->ifr_flags & 288 (IFF_UP | IFF_LOOPBACK | IFF_POINTOPOINT)) != IFF_UP) 289 continue; 290 deviceInitOne(ifr->ifr_name); 291 } 292 (void) close(fd); 293 #else 294 int fd; 295 int n; 296 struct ifreq ibuf[8], *ifrp; 297 struct ifconf ifc; 298 299 if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) { 300 syslog(LOG_ERR, "deviceInitAll: old socket: %m"); 301 exit(1); 302 } 303 ifc.ifc_len = sizeof ibuf; 304 ifc.ifc_buf = (caddr_t)ibuf; 305 if (ioctl(fd, SIOCGIFCONF, (char *)&ifc) < 0 || 306 ifc.ifc_len < sizeof(struct ifreq)) { 307 syslog(LOG_ERR, "deviceInitAll: old SIOCGIFCONF: %m"); 308 exit(1); 309 } 310 ifrp = ibuf; 311 n = ifc.ifc_len / sizeof(*ifrp); 312 for (; --n >= 0; ++ifrp) { 313 if (ioctl(fd, SIOCGIFFLAGS, (char *)ifrp) < 0) { 314 continue; 315 } 316 if (/*(ifrp->ifr_flags & IFF_UP) == 0 ||*/ 317 ifrp->ifr_flags & IFF_LOOPBACK || 318 ifrp->ifr_flags & IFF_POINTOPOINT) 319 continue; 320 deviceInitOne(ifrp->ifr_name); 321 } 322 323 (void) close(fd); 324 #endif /* DEV_NEW_CONF */ 325 } 326