1 // vim:ts=4:sw=4:expandtab
4 #include <yajl/yajl_gen.h>
5 #include <yajl/yajl_version.h>
11 #define IW_ESSID_MAX_SIZE 32
16 #include <sys/param.h>
17 #include <sys/ioctl.h>
18 #include <sys/socket.h>
21 #include <net/if_media.h>
22 #include <net80211/ieee80211.h>
23 #include <net80211/ieee80211_ioctl.h>
25 #define IW_ESSID_MAX_SIZE IEEE80211_NWID_LEN
29 #include <sys/param.h>
30 #include <sys/ioctl.h>
31 #include <sys/socket.h>
34 #include <net/if_media.h>
35 #include <netproto/802_11/ieee80211.h>
36 #include <netproto/802_11/ieee80211_ioctl.h>
38 #define IW_ESSID_MAX_SIZE IEEE80211_NWID_LEN
42 #include <sys/ioctl.h>
43 #include <sys/socket.h>
45 #include <sys/types.h>
46 #include <netinet/in.h>
47 #include <netinet/if_ether.h>
48 #include <net80211/ieee80211.h>
49 #include <net80211/ieee80211_ioctl.h>
54 #define WIRELESS_INFO_FLAG_HAS_ESSID (1 << 0)
55 #define WIRELESS_INFO_FLAG_HAS_QUALITY (1 << 1)
56 #define WIRELESS_INFO_FLAG_HAS_SIGNAL (1 << 2)
57 #define WIRELESS_INFO_FLAG_HAS_NOISE (1 << 3)
58 #define WIRELESS_INFO_FLAG_HAS_FREQUENCY (1 << 4)
60 #define PERCENT_VALUE(value, total) ((int)(value * 100 / (float)total + 0.5f))
64 char essid[IW_ESSID_MAX_SIZE + 1];
76 static int get_wireless_info(const char *interface, wireless_info_t *info) {
77 memset(info, 0, sizeof(wireless_info_t));
80 int skfd = iw_sockets_open();
82 perror("iw_sockets_open");
87 if (iw_get_basic_config(skfd, interface, &wcfg) < 0) {
92 if (wcfg.has_essid && wcfg.essid_on) {
93 info->flags |= WIRELESS_INFO_FLAG_HAS_ESSID;
94 strncpy(&info->essid[0], wcfg.essid, IW_ESSID_MAX_SIZE);
95 info->essid[IW_ESSID_MAX_SIZE] = '\0';
99 info->frequency = wcfg.freq;
100 info->flags |= WIRELESS_INFO_FLAG_HAS_FREQUENCY;
103 /* If the function iw_get_stats does not return proper stats, the
104 * wifi is considered as down.
105 * Since ad-hoc network does not have theses stats, we need to return
106 * here for this mode. */
107 if (wcfg.mode == 1) {
112 /* Wireless quality is a relative value in a driver-specific range.
113 * Signal and noise level can be either relative or absolute values
114 * in dBm. Furthermore, noise and quality can be expressed directly
115 * in dBm or in RCPI (802.11k), which we convert to dBm. When those
116 * values are expressed directly in dBm, they range from -192 to 63,
117 * and since the values are packed into 8 bits, we need to perform
118 * 8-bit arithmetic on them. Assume absolute values if everything
119 * else fails (driver bug). */
122 if (iw_get_range_info(skfd, interface, &range) < 0) {
128 if (iw_get_stats(skfd, interface, &stats, &range, 1) < 0) {
133 if (stats.qual.level != 0 || (stats.qual.updated & (IW_QUAL_DBM | IW_QUAL_RCPI))) {
134 if (!(stats.qual.updated & IW_QUAL_QUAL_INVALID)) {
135 info->quality = stats.qual.qual;
136 info->quality_max = range.max_qual.qual;
137 info->quality_average = range.avg_qual.qual;
138 info->flags |= WIRELESS_INFO_FLAG_HAS_QUALITY;
141 if (stats.qual.updated & IW_QUAL_RCPI) {
142 if (!(stats.qual.updated & IW_QUAL_LEVEL_INVALID)) {
143 info->signal_level = stats.qual.level / 2.0 - 110 + 0.5;
144 info->flags |= WIRELESS_INFO_FLAG_HAS_SIGNAL;
146 if (!(stats.qual.updated & IW_QUAL_NOISE_INVALID)) {
147 info->noise_level = stats.qual.noise / 2.0 - 110 + 0.5;
148 info->flags |= WIRELESS_INFO_FLAG_HAS_NOISE;
151 if ((stats.qual.updated & IW_QUAL_DBM) || stats.qual.level > range.max_qual.level) {
152 if (!(stats.qual.updated & IW_QUAL_LEVEL_INVALID)) {
153 info->signal_level = stats.qual.level;
154 if (info->signal_level > 63)
155 info->signal_level -= 256;
156 info->flags |= WIRELESS_INFO_FLAG_HAS_SIGNAL;
158 if (!(stats.qual.updated & IW_QUAL_NOISE_INVALID)) {
159 info->noise_level = stats.qual.noise;
160 if (info->noise_level > 63)
161 info->noise_level -= 256;
162 info->flags |= WIRELESS_INFO_FLAG_HAS_NOISE;
165 if (!(stats.qual.updated & IW_QUAL_LEVEL_INVALID)) {
166 info->signal_level = stats.qual.level;
167 info->signal_level_max = range.max_qual.level;
168 info->flags |= WIRELESS_INFO_FLAG_HAS_SIGNAL;
170 if (!(stats.qual.updated & IW_QUAL_NOISE_INVALID)) {
171 info->noise_level = stats.qual.noise;
172 info->noise_level_max = range.max_qual.noise;
173 info->flags |= WIRELESS_INFO_FLAG_HAS_NOISE;
178 if (!(stats.qual.updated & IW_QUAL_QUAL_INVALID)) {
179 info->quality = stats.qual.qual;
180 info->flags |= WIRELESS_INFO_FLAG_HAS_QUALITY;
182 if (!(stats.qual.updated & IW_QUAL_LEVEL_INVALID)) {
183 info->quality = stats.qual.level;
184 info->flags |= WIRELESS_INFO_FLAG_HAS_SIGNAL;
186 if (!(stats.qual.updated & IW_QUAL_NOISE_INVALID)) {
187 info->quality = stats.qual.noise;
188 info->flags |= WIRELESS_INFO_FLAG_HAS_NOISE;
193 if (iw_get_ext(skfd, interface, SIOCGIWRATE, &wrq) >= 0)
194 info->bitrate = wrq.u.bitrate.value;
199 #if defined(__FreeBSD__) || defined(__DragonFly__)
202 struct ieee80211req_sta_req req;
203 uint8_t buf[24 * 1024];
205 struct ieee80211req na;
206 char bssid[IEEE80211_ADDR_LEN];
209 if ((s = socket(AF_INET, SOCK_DGRAM, 0)) == -1)
212 memset(&na, 0, sizeof(na));
213 strlcpy(na.i_name, interface, sizeof(na.i_name));
214 na.i_type = IEEE80211_IOC_SSID;
215 na.i_data = &info->essid[0];
216 na.i_len = IEEE80211_NWID_LEN + 1;
217 if ((inwid = ioctl(s, SIOCG80211, (caddr_t)&na)) == -1) {
222 if (na.i_len <= IEEE80211_NWID_LEN)
225 len = IEEE80211_NWID_LEN + 1;
226 info->essid[len - 1] = '\0';
231 info->flags |= WIRELESS_INFO_FLAG_HAS_ESSID;
233 memset(&na, 0, sizeof(na));
234 strlcpy(na.i_name, interface, sizeof(na.i_name));
235 na.i_type = IEEE80211_IOC_BSSID;
237 na.i_len = sizeof(bssid);
239 if (ioctl(s, SIOCG80211, (caddr_t)&na) == -1) {
244 memcpy(u.req.is_u.macaddr, bssid, sizeof(bssid));
245 memset(&na, 0, sizeof(na));
246 strlcpy(na.i_name, interface, sizeof(na.i_name));
247 na.i_type = IEEE80211_IOC_STA_INFO;
249 na.i_len = sizeof(u);
251 if (ioctl(s, SIOCG80211, (caddr_t)&na) == -1) {
257 if (na.i_len >= sizeof(u.req)) {
259 * Just use the first BSSID returned even if there are
260 * multiple APs sharing the same BSSID.
262 info->signal_level = u.req.info[0].isi_rssi / 2 +
263 u.req.info[0].isi_noise;
264 info->flags |= WIRELESS_INFO_FLAG_HAS_SIGNAL;
265 info->noise_level = u.req.info[0].isi_noise;
266 info->flags |= WIRELESS_INFO_FLAG_HAS_NOISE;
273 struct ieee80211_bssid bssid;
274 struct ieee80211_nwid nwid;
275 struct ieee80211_nodereq nr;
277 struct ether_addr ea;
279 int s, len, ibssid, inwid;
280 u_int8_t zero_bssid[IEEE80211_ADDR_LEN];
282 if ((s = socket(AF_INET, SOCK_DGRAM, 0)) == -1)
285 memset(&ifr, 0, sizeof(ifr));
286 ifr.ifr_data = (caddr_t)&nwid;
287 (void)strlcpy(ifr.ifr_name, interface, sizeof(ifr.ifr_name));
288 inwid = ioctl(s, SIOCG80211NWID, (caddr_t)&ifr);
290 memset(&bssid, 0, sizeof(bssid));
291 strlcpy(bssid.i_name, interface, sizeof(bssid.i_name));
292 ibssid = ioctl(s, SIOCG80211BSSID, &bssid);
294 if (ibssid != 0 || inwid != 0) {
301 if (nwid.i_len <= IEEE80211_NWID_LEN)
302 len = nwid.i_len + 1;
304 len = IEEE80211_NWID_LEN + 1;
306 strncpy(&info->essid[0], nwid.i_nwid, len);
307 info->essid[IW_ESSID_MAX_SIZE] = '\0';
308 info->flags |= WIRELESS_INFO_FLAG_HAS_ESSID;
311 /* Signal strength */
313 memset(&zero_bssid, 0, sizeof(zero_bssid));
314 if (ibssid == 0 && memcmp(bssid.i_bssid, zero_bssid, IEEE80211_ADDR_LEN) != 0) {
315 memcpy(&ea.ether_addr_octet, bssid.i_bssid, sizeof(ea.ether_addr_octet));
317 bzero(&nr, sizeof(nr));
318 bcopy(bssid.i_bssid, &nr.nr_macaddr, sizeof(nr.nr_macaddr));
319 strlcpy(nr.nr_ifname, interface, sizeof(nr.nr_ifname));
321 if (ioctl(s, SIOCG80211NODE, &nr) == 0 && nr.nr_rssi) {
322 info->signal_level = nr.nr_rssi;
324 info->signal_level_max = nr.nr_max_rssi;
326 info->flags |= WIRELESS_INFO_FLAG_HAS_SIGNAL;
337 void print_wireless_info(yajl_gen json_gen, char *buffer, const char *interface, const char *format_up, const char *format_down) {
339 char *outwalk = buffer;
340 wireless_info_t info;
344 const char *ip_address = get_ip_addr(interface);
345 if (ip_address == NULL) {
346 START_COLOR("color_bad");
347 outwalk += sprintf(outwalk, "%s", format_down);
351 if (get_wireless_info(interface, &info)) {
353 if (info.flags & WIRELESS_INFO_FLAG_HAS_QUALITY)
354 START_COLOR((info.quality < info.quality_average ? "color_degraded" : "color_good"));
356 START_COLOR((BEGINS_WITH(ip_address, "no IP") ? "color_degraded" : "color_good"));
359 START_COLOR("color_bad");
362 for (; *walk != '\0'; walk++) {
364 *(outwalk++) = *walk;
368 if (BEGINS_WITH(walk + 1, "quality")) {
369 if (info.flags & WIRELESS_INFO_FLAG_HAS_QUALITY) {
370 if (info.quality_max)
371 outwalk += sprintf(outwalk, "%03d%%", PERCENT_VALUE(info.quality, info.quality_max));
373 outwalk += sprintf(outwalk, "%d", info.quality);
377 walk += strlen("quality");
380 if (BEGINS_WITH(walk + 1, "signal")) {
381 if (info.flags & WIRELESS_INFO_FLAG_HAS_SIGNAL) {
382 if (info.signal_level_max)
383 outwalk += sprintf(outwalk, "%03d%%", PERCENT_VALUE(info.signal_level, info.signal_level_max));
385 outwalk += sprintf(outwalk, "%d dBm", info.signal_level);
389 walk += strlen("signal");
392 if (BEGINS_WITH(walk + 1, "noise")) {
393 if (info.flags & WIRELESS_INFO_FLAG_HAS_NOISE) {
394 if (info.noise_level_max)
395 outwalk += sprintf(outwalk, "%03d%%", PERCENT_VALUE(info.noise_level, info.noise_level_max));
397 outwalk += sprintf(outwalk, "%d dBm", info.noise_level);
401 walk += strlen("noise");
404 if (BEGINS_WITH(walk + 1, "essid")) {
405 if (info.flags & WIRELESS_INFO_FLAG_HAS_ESSID)
406 outwalk += sprintf(outwalk, "%s", info.essid);
409 walk += strlen("essid");
412 if (BEGINS_WITH(walk + 1, "frequency")) {
413 if (info.flags & WIRELESS_INFO_FLAG_HAS_FREQUENCY)
414 outwalk += sprintf(outwalk, "%1.1f GHz", info.frequency / 1e9);
417 walk += strlen("frequency");
420 if (BEGINS_WITH(walk + 1, "ip")) {
421 outwalk += sprintf(outwalk, "%s", ip_address);
422 walk += strlen("ip");
426 if (BEGINS_WITH(walk + 1, "bitrate")) {
429 iw_print_bitrate(br_buffer, sizeof(br_buffer), info.bitrate);
431 outwalk += sprintf(outwalk, "%s", br_buffer);
432 walk += strlen("bitrate");
439 OUTPUT_FULL_TEXT(buffer);