- /* See LICENSE file for copyright and license details. */
- #include <errno.h>
- #include <ifaddrs.h>
- #include <stdio.h>
- #include <string.h>
- #include <sys/socket.h>
- #include <sys/ioctl.h>
- #include <unistd.h>
-
- #include "../util.h"
-
- #if defined(__linux__)
- #include <limits.h>
- #include <linux/wireless.h>
-
- const char *
- wifi_perc(const char *iface)
- {
- int i, cur;
- int total = 70; /* the max of /proc/net/wireless */
- char *p, *datastart;
- char path[PATH_MAX];
- char status[5];
- FILE *fp;
-
- snprintf(path, sizeof(path), "%s%s%s", "/sys/class/net/", iface,
- "/operstate");
- if (!(fp = fopen(path, "r"))) {
- fprintf(stderr, "fopen '%s': %s\n", path,
- strerror(errno));
- return NULL;
- }
- p = fgets(status, 5, fp);
- fclose(fp);
- if(!p || strcmp(status, "up\n") != 0) {
- return NULL;
- }
-
- if (!(fp = fopen("/proc/net/wireless", "r"))) {
- fprintf(stderr, "fopen '/proc/net/wireless': %s\n",
- strerror(errno));
- return NULL;
- }
-
- for (i = 0; i < 3; i++) {
- if (!(p = fgets(buf, sizeof(buf) - 1, fp)))
- break;
- }
- fclose(fp);
- if (i < 2 || !p) {
- return NULL;
- }
-
- if (!(datastart = strstr(buf, iface))) {
- return NULL;
- }
-
- datastart = (datastart+(strlen(iface)+1));
- sscanf(datastart + 1, " %*d %d %*d %*d\t\t %*d\t "
- "%*d\t\t%*d\t\t %*d\t %*d\t\t %*d", &cur);
-
- return bprintf("%d", (int)((float)cur / total * 100));
- }
-
- const char *
- wifi_essid(const char *iface)
- {
- static char id[IW_ESSID_MAX_SIZE+1];
- int sockfd = socket(AF_INET, SOCK_DGRAM, 0);
- struct iwreq wreq;
-
- memset(&wreq, 0, sizeof(struct iwreq));
- wreq.u.essid.length = IW_ESSID_MAX_SIZE+1;
- snprintf(wreq.ifr_name, sizeof(wreq.ifr_name), "%s", iface);
-
- if (sockfd < 0) {
- fprintf(stderr, "socket 'AF_INET': %s\n",
- strerror(errno));
- return NULL;
- }
- wreq.u.essid.pointer = id;
- if (ioctl(sockfd,SIOCGIWESSID, &wreq) < 0) {
- fprintf(stderr, "ioctl 'SIOCGIWESSID': %s\n", strerror(errno));
- close(sockfd);
- return NULL;
- }
-
- close(sockfd);
-
- if (!strcmp(id, "")) {
- return NULL;
- }
-
- return id;
- }
- #elif defined(__OpenBSD__)
- #include <net/if.h>
- #include <net/if_media.h>
- #include <net80211/ieee80211.h>
- #include <net80211/ieee80211_ioctl.h>
- #include <stdlib.h>
- #include <sys/types.h>
-
- static int
- load_ieee80211_nodereq(const char *iface, struct ieee80211_nodereq *nr)
- {
- struct ieee80211_bssid bssid;
- int sockfd;
- memset(&bssid, 0, sizeof(bssid));
- memset(nr, 0, sizeof(struct ieee80211_nodereq));
- if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) == -1) {
- fprintf(stderr, "socket 'AF_INET': %s\n",
- strerror(errno));
- return 0;
- }
- strlcpy(bssid.i_name, iface, sizeof(bssid.i_name));
- if ((ioctl(sockfd, SIOCG80211BSSID, &bssid)) == -1) {
- fprintf(stderr, "ioctl 'SIOCG80211BSSID': %s\n",
- strerror(errno));
- close(sockfd);
- return 0;
- }
- strlcpy(nr->nr_ifname, iface, sizeof(nr->nr_ifname));
- memmove(&nr->nr_macaddr, bssid.i_bssid, sizeof(nr->nr_macaddr));
- if ((ioctl(sockfd, SIOCG80211NODE, nr)) == -1 && nr->nr_rssi) {
- fprintf(stderr, "ioctl 'SIOCG80211NODE': %s\n",
- strerror(errno));
- close(sockfd);
- return 0;
- }
- return close(sockfd), 1;
-
- }
-
- const char *
- wifi_perc(const char *iface)
- {
- struct ieee80211_nodereq nr;
- int q;
-
- if (load_ieee80211_nodereq(iface, &nr)) {
- if (nr.nr_max_rssi)
- q = IEEE80211_NODEREQ_RSSI(&nr);
- else
- q = nr.nr_rssi >= -50 ? 100 : (nr.nr_rssi <= -100 ? 0 :
- (2 * (nr.nr_rssi + 100)));
- return bprintf("%d", q);
- }
- return NULL;
- }
-
- const char *
- wifi_essid(const char *iface)
- {
- struct ieee80211_nodereq nr;
-
- if (load_ieee80211_nodereq(iface, &nr)) {
- return bprintf("%s", nr.nr_nwid);
- }
- return NULL;
- }
-
- #endif
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