Annotation of embedtools/src/get1steth.c, revision 1.2
1.2 ! misho 1: /*************************************************************************
! 2: * (C) 2010 AITNET - Sofia/Bulgaria - <office@aitbg.com>
! 3: * by Michael Pounov <misho@aitbg.com>
! 4: *
! 5: * $Author: misho $
! 6: * $Id: get1steth.c,v 1.1.2.11 2011/06/08 09:33:29 misho Exp $
! 7: *
! 8: *************************************************************************/
! 9: #include "global.h"
! 10: #include "get1steth.h"
! 11:
! 12:
! 13: char szIface[MAX_STR];
! 14: int Verbose;
! 15: extern char compiled[], compiledby[], compilehost[];
! 16:
! 17:
! 18: static void Usage()
! 19: {
! 20: printf("-= GET_FIRST_ETHERNET =- Get First Ethernet Interface tool\n"
! 21: "=== %s === %s@%s ===\n\n"
! 22: "Syntax: get1steth [option] [custom_first_interface]\n\n"
! 23: "\t-v\t\tVerbose (more -v more verbosity)\n"
! 24: "\t-g\t\tOnly get first interface, print and exit ...\n"
! 25: "\n", compiled, compiledby, compilehost);
! 26: }
! 27:
! 28: #ifdef HAVE_KLDNEXT
! 29: static int kldLoad()
! 30: {
! 31: struct module_stat mstat;
! 32: register int i, j;
! 33: u_char flg = 0;
! 34:
! 35: memset(&mstat, 0, sizeof mstat);
! 36: mstat.version = sizeof mstat;
! 37: for (i = kldnext(0); i > 0; i = kldnext(i))
! 38: for (j = kldfirstmod(i); j > 0; j = modfnext(j)) {
! 39: if (modstat(j, &mstat) == -1)
! 40: continue;
! 41:
! 42: if (!strncmp(MODVLAN, mstat.name, sizeof MODVLAN)) {
! 43: flg = 1;
! 44: break;
! 45: }
! 46: }
! 47: if (flg)
! 48: return 0;
! 49:
! 50: if (kldload(MODVLAN) == -1)
! 51: return -1;
! 52:
! 53: return 1;
! 54: }
! 55: #endif
! 56:
! 57: // -------------------------------
! 58:
! 59: int main(int argc, char **argv)
! 60: {
! 61: char ch, GetOnly = 0;
! 62: struct ifaddrs *ifa, *ifp;
! 63: struct sockaddr_dl *sdl;
! 64: struct sockaddr_in *sin;
! 65: struct ifreq ifr;
! 66: struct vlanreq vlr;
! 67: struct ifaliasreq ifra;
! 68: struct ifmediareq ifmr;
! 69: int s;
! 70:
! 71: while ((ch = getopt(argc, argv, "hvg")) != -1)
! 72: switch (ch) {
! 73: case 'g':
! 74: GetOnly = 1;
! 75: break;
! 76: case 'v':
! 77: Verbose++;
! 78: break;
! 79: case 'h':
! 80: default:
! 81: Usage();
! 82: return 1;
! 83: }
! 84: argc -= optind;
! 85: argv += optind;
! 86:
! 87: openlog("get1steth", LOG_CONS | LOG_PERROR, LOG_USER);
! 88:
! 89: if (argc) {
! 90: strlcpy(szIface, *argv, MAX_STR);
! 91: VERB(1) syslog(LOG_NOTICE, "Info:: Get CUSTOM first interface %s\n", szIface);
! 92: } else {
! 93: s = socket(PF_INET, SOCK_DGRAM, 0);
! 94: if (-1 == s) {
! 95: syslog(LOG_ERR, "Error:: socket(INET) #%d - %s\n", errno, strerror(errno));
! 96: closelog();
! 97: return 1;
! 98: }
! 99:
! 100: getifaddrs(&ifa);
! 101: for (ifp = ifa; ifp; ifp = ifp->ifa_next) {
! 102: if (PF_LINK == ifp->ifa_addr->sa_family &&
! 103: IFT_ETHER == ((struct sockaddr_dl*) ifp->ifa_addr)->sdl_type) {
! 104: memset(&ifmr, 0, sizeof ifmr);
! 105: strlcpy(ifmr.ifm_name, ifp->ifa_name, IFNAMSIZ);
! 106: if (ioctl(s, SIOCGIFMEDIA, &ifmr) == -1) {
! 107: syslog(LOG_ERR, "Error:: media interface=%s ioctl(SIOCGIFMEDIA) #%d - %s\n",
! 108: ifmr.ifm_name, errno, strerror(errno));
! 109: close(s);
! 110: closelog();
! 111: return 1;
! 112: }
! 113:
! 114: if (IFM_ETHER == IFM_TYPE(ifmr.ifm_current)) {
! 115: strlcpy(szIface, ifp->ifa_name, MAX_STR);
! 116: sdl = (struct sockaddr_dl*) ifp->ifa_addr;
! 117: VERB(2) syslog(LOG_NOTICE, "Info:: Get first interface=%s MAC=%s\n", szIface,
! 118: ether_ntoa((struct ether_addr*) LLADDR(sdl)));
! 119: break;
! 120: }
! 121: }
! 122: }
! 123: freeifaddrs(ifa);
! 124:
! 125: close(s);
! 126: }
! 127: if (!*szIface) {
! 128: syslog(LOG_NOTICE, "Info:: Ethernet interface not found!!!\n");
! 129:
! 130: closelog();
! 131: return 1;
! 132: }
! 133:
! 134: if (GetOnly) {
! 135: printf("%s\n", szIface);
! 136:
! 137: closelog();
! 138: return 0;
! 139: }
! 140:
! 141: #ifdef HAVE_KLDNEXT
! 142: s = kldLoad();
! 143: if (s == -1) {
! 144: syslog(LOG_ERR, "Error:: kldload(if_vlan) Can`t operate with vlans ...\n");
! 145: return 1;
! 146: } else
! 147: VERB(3) syslog(LOG_NOTICE, "VLAN module ... %s\n", s ? "Loaded" : "Already loaded");
! 148: #endif
! 149:
! 150: // create vlan
! 151: memset(&ifr, 0, sizeof ifr);
! 152: strlcpy(vlr.vlr_parent, szIface, IFNAMSIZ);
! 153: vlr.vlr_tag = MGMT_VTAG;
! 154:
! 155: strlcpy(ifr.ifr_name, MGMT_IFACE, IFNAMSIZ);
! 156: ifr.ifr_data = (void *) &vlr;
! 157:
! 158: s = socket(PF_INET, SOCK_DGRAM, 0);
! 159: if (-1 == s) {
! 160: syslog(LOG_ERR, "Error:: socket(INET) #%d - %s\n", errno, strerror(errno));
! 161: closelog();
! 162: return 2;
! 163: }
! 164: #ifdef SIOCIFCREATE2
! 165: if (ioctl(s, SIOCIFCREATE2, &ifr) == -1 && errno != EEXIST) {
! 166: #else
! 167: if (ioctl(s, SIOCIFCREATE, &ifr) == -1 && errno != EEXIST) {
! 168: #endif
! 169: syslog(LOG_ERR, "Error:: Create interface=%s ioctl(SIOCIFCREATE2) #%d - %s\n",
! 170: MGMT_IFACE, errno, strerror(errno));
! 171: close(s);
! 172: return 2;
! 173: } else
! 174: VERB(2) syslog(LOG_NOTICE, "Info:: Created interface=%s\n", MGMT_IFACE);
! 175: // rename iface
! 176: ifr.ifr_data = MGMT_NAME;
! 177: #ifdef SIOCSIFNAME
! 178: if (errno != EEXIST && ioctl(s, SIOCSIFNAME, &ifr) == -1) {
! 179: #else
! 180: if (errno != EEXIST && ioctl(s, SIOCGIFDESCR, &ifr) == -1) {
! 181: #endif
! 182: syslog(LOG_ERR, "Error:: Managment interface=%s ioctl(SIOCSIFNAME) #%d - %s\n",
! 183: MGMT_NAME, errno, strerror(errno));
! 184: close(s);
! 185: return 2;
! 186: } else
! 187: VERB(2) syslog(LOG_NOTICE, "Info:: Managment interface=%s\n", MGMT_NAME);
! 188:
! 189: // assign address & up
! 190: memset(&ifra, 0, sizeof ifra);
! 191: strlcpy(ifra.ifra_name, MGMT_NAME, IFNAMSIZ);
! 192: sin = (struct sockaddr_in*) &ifra.ifra_addr;
! 193: sin->sin_len = sizeof ifra.ifra_addr;
! 194: sin->sin_family = AF_INET;
! 195: sin->sin_addr.s_addr = inet_addr(MGMT_ADDR);
! 196: sin = (struct sockaddr_in*) &ifra.ifra_mask;
! 197: sin->sin_len = sizeof ifra.ifra_mask;
! 198: sin->sin_family = AF_INET;
! 199: sin->sin_addr.s_addr = inet_addr(MGMT_MASK);
! 200: if (ioctl(s, SIOCAIFADDR, &ifra) == -1) {
! 201: syslog(LOG_ERR, "Error:: IP %s ioctl(SIOCAIFADDR) #%d - %s\n",
! 202: MGMT_ADDR, errno, strerror(errno));
! 203: close(s);
! 204: return 2;
! 205: } else
! 206: VERB(2) syslog(LOG_NOTICE, "Info:: IP %s\n", MGMT_ADDR);
! 207:
! 208: close(s);
! 209: closelog();
! 210: return 0;
! 211: }
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