int
connection_active(char *if_name, int if_type) {
/*
* Returns 1 if the network status on the interface is active.
* if_type: 0 for ethernet, 1 for ieee80211
*/
struct ifmediareq ifmr;
const struct ifmedia_status_description *ifms;
static const int ifm_status_valid_list[] = IFM_STATUS_VALID_LIST;
static const struct ifmedia_status_description ifm_status_descriptions[] = IFM_STATUS_DESCRIPTIONS;
int bit = 0, s = -1, res;
s = open_socket(AF_INET);
if (s < 0) {
printf("error opening socket: %s\n", strerror(errno));
}
memset(&ifmr, 0, sizeof(ifmr));
strlcpy(ifmr.ifm_name, if_name, sizeof(ifmr.ifm_name));
res = ioctl(s, SIOCGIFMEDIA, (caddr_t) & ifmr);
close(s);
if (res) {
printf("res: %d (%s)\n", res, strerror(errno));
return 0;
}
if (if_type) {
/* ieee80211 check */
if (IFM_ACTIVE) {
printf("connection_active: ieee80211 network is active\n");
return 1;
}
printf("connection_active: ieee80211 failed check\n");
return 0;
} else {
/* ethernet check */
for (ifms = ifm_status_descriptions; ifms->ifms_valid != 0; ifms++) {
if (ifms->ifms_type == IFM_TYPE(ifmr.ifm_current))
if (strcmp(IFM_STATUS_DESC(ifms, ifmr.ifm_status), "active") == 0) {
printf("connection_active: ethernet network is active\n");
return 1;
} else {
printf("connection_active: ethernet failed check\n");
return 0;
}
}
}
}
void
media_status(int s, char *ifname, char *delim)
{
uint64_t *media_list;
struct ifmediareq ifmr;
memset(&ifmr, 0, sizeof(ifmr));
strlcpy(ifmr.ifm_name, ifname, sizeof(ifmr.ifm_name));
if (ioctl(s, SIOCGIFMEDIA, (caddr_t)&ifmr) < 0) {
if (errno != ENOTTY)
printf("%% media_status: SIOCGIFMEDIA: %s\n",
strerror(errno));
return;
}
if (ifmr.ifm_count == 0) {
if (verbose)
printf("%% %s: No media types?\n", ifname);
return;
}
media_list = calloc(ifmr.ifm_count, sizeof(*media_list));
if (media_list == NULL) {
printf("%% media_status: calloc: %s\n", strerror(errno));
return;
}
ifmr.ifm_ulist = media_list;
if (ioctl(s, SIOCGIFMEDIA, (caddr_t)&ifmr) < 0) {
printf("%% media_status: SIOCGIFMEDIA: %s\n", strerror(errno));
free(media_list);
return;
}
printf("%s", delim);
print_media_word(ifmr.ifm_current, 0, 0);
if (ifmr.ifm_active != ifmr.ifm_current) {
printf(" (");
print_media_word(ifmr.ifm_active, 0, 0);
putchar(')');
}
if (ifmr.ifm_status & IFM_AVALID) {
const struct ifmedia_status_description *ifms;
int bitno, found = 0;
printf(", status ");
for (bitno = 0; ifm_status_valid_list[bitno] != 0; bitno++) {
for (ifms = ifm_status_descriptions;
ifms->ifms_valid != 0; ifms++) {
if (ifms->ifms_type !=
IFM_TYPE(ifmr.ifm_current) ||
ifms->ifms_valid !=
ifm_status_valid_list[bitno])
continue;
printf("%s%s", found ? ", " : "",
IFM_STATUS_DESC(ifms, ifmr.ifm_status));
found = 1;
/*
* For each valid indicator bit, there's only
* one entry for each media type, so
* terminate the inner loop now.
*/
break;
}
}
if (found == 0)
printf("unknown");
}
putchar('\n');
free(media_list);
return;
}
