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Commit | Line | Data |
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3563f4c5 JB |
1 | #include <net/if.h> |
2 | #include <errno.h> | |
3 | #include <string.h> | |
4 | #include <ctype.h> | |
764fe753 | 5 | #include <stdbool.h> |
3563f4c5 JB |
6 | |
7 | #include <netlink/genl/genl.h> | |
8 | #include <netlink/genl/family.h> | |
9 | #include <netlink/genl/ctrl.h> | |
10 | #include <netlink/msg.h> | |
11 | #include <netlink/attr.h> | |
12 | ||
13 | #include "nl80211.h" | |
14 | #include "iw.h" | |
15 | ||
92a04ecd MH |
16 | #define WLAN_CAPABILITY_ESS (1<<0) |
17 | #define WLAN_CAPABILITY_IBSS (1<<1) | |
18 | #define WLAN_CAPABILITY_CF_POLLABLE (1<<2) | |
19 | #define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3) | |
20 | #define WLAN_CAPABILITY_PRIVACY (1<<4) | |
21 | #define WLAN_CAPABILITY_SHORT_PREAMBLE (1<<5) | |
22 | #define WLAN_CAPABILITY_PBCC (1<<6) | |
23 | #define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7) | |
24 | #define WLAN_CAPABILITY_SPECTRUM_MGMT (1<<8) | |
25 | #define WLAN_CAPABILITY_QOS (1<<9) | |
26 | #define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10) | |
27 | #define WLAN_CAPABILITY_APSD (1<<11) | |
28 | #define WLAN_CAPABILITY_DSSS_OFDM (1<<13) | |
29 | ||
857d966e MH |
30 | static unsigned char wifi_oui[3] = { 0x00, 0x50, 0xf2 }; |
31 | static unsigned char ieee80211_oui[3] = { 0x00, 0x0f, 0xac }; | |
32 | ||
764fe753 JB |
33 | struct scan_params { |
34 | bool unknown; | |
febeb0c0 | 35 | enum print_ie_type type; |
575280cc | 36 | bool show_both_ie_sets; |
764fe753 JB |
37 | }; |
38 | ||
2b690f0a LR |
39 | #define IEEE80211_COUNTRY_EXTENSION_ID 201 |
40 | ||
72725719 JB |
41 | union ieee80211_country_ie_triplet { |
42 | struct { | |
43 | __u8 first_channel; | |
44 | __u8 num_channels; | |
45 | __s8 max_power; | |
46 | } __attribute__ ((packed)) chans; | |
47 | struct { | |
48 | __u8 reg_extension_id; | |
49 | __u8 reg_class; | |
50 | __u8 coverage_class; | |
51 | } __attribute__ ((packed)) ext; | |
2b690f0a LR |
52 | } __attribute__ ((packed)); |
53 | ||
7c37a24d JB |
54 | static int handle_scan(struct nl80211_state *state, |
55 | struct nl_cb *cb, | |
3563f4c5 JB |
56 | struct nl_msg *msg, |
57 | int argc, char **argv) | |
58 | { | |
559a1713 JB |
59 | struct nl_msg *ssids = NULL, *freqs = NULL; |
60 | char *eptr; | |
3563f4c5 | 61 | int err = -ENOBUFS; |
559a1713 JB |
62 | int i; |
63 | enum { | |
64 | NONE, | |
65 | FREQ, | |
64797a7f | 66 | IES, |
559a1713 JB |
67 | SSID, |
68 | DONE, | |
69 | } parse = NONE; | |
70 | int freq; | |
71 | bool passive = false, have_ssids = false, have_freqs = false; | |
64797a7f JB |
72 | size_t tmp; |
73 | unsigned char *ies; | |
3563f4c5 JB |
74 | |
75 | ssids = nlmsg_alloc(); | |
76 | if (!ssids) | |
77 | return -ENOMEM; | |
559a1713 JB |
78 | |
79 | freqs = nlmsg_alloc(); | |
80 | if (!freqs) { | |
81 | nlmsg_free(ssids); | |
82 | return -ENOMEM; | |
83 | } | |
84 | ||
85 | for (i = 0; i < argc; i++) { | |
559a1713 JB |
86 | switch (parse) { |
87 | case NONE: | |
64797a7f JB |
88 | if (strcmp(argv[i], "freq") == 0) { |
89 | parse = FREQ; | |
90 | have_freqs = true; | |
91 | break; | |
92 | } else if (strcmp(argv[i], "ies") == 0) { | |
93 | parse = IES; | |
94 | break; | |
95 | } else if (strcmp(argv[i], "ssid") == 0) { | |
96 | parse = SSID; | |
97 | have_ssids = true; | |
98 | break; | |
99 | } else if (strcmp(argv[i], "passive") == 0) { | |
100 | parse = DONE; | |
101 | passive = true; | |
102 | break; | |
103 | } | |
559a1713 JB |
104 | case DONE: |
105 | return 1; | |
106 | case FREQ: | |
107 | freq = strtoul(argv[i], &eptr, 10); | |
108 | if (eptr != argv[i] + strlen(argv[i])) | |
109 | return 1; | |
110 | NLA_PUT_U32(freqs, i, freq); | |
64797a7f JB |
111 | parse = NONE; |
112 | break; | |
113 | case IES: | |
114 | ies = parse_hex(argv[i], &tmp); | |
115 | if (!ies) | |
116 | goto nla_put_failure; | |
117 | NLA_PUT(msg, NL80211_ATTR_IE, tmp, ies); | |
118 | free(ies); | |
119 | parse = NONE; | |
559a1713 JB |
120 | break; |
121 | case SSID: | |
122 | NLA_PUT(ssids, i, strlen(argv[i]), argv[i]); | |
123 | break; | |
124 | } | |
125 | } | |
126 | ||
127 | if (!have_ssids) | |
128 | NLA_PUT(ssids, 1, 0, ""); | |
129 | if (!passive) | |
130 | nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids); | |
131 | ||
132 | if (have_freqs) | |
133 | nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs); | |
3563f4c5 JB |
134 | |
135 | err = 0; | |
136 | nla_put_failure: | |
137 | nlmsg_free(ssids); | |
559a1713 | 138 | nlmsg_free(freqs); |
3563f4c5 JB |
139 | return err; |
140 | } | |
3563f4c5 | 141 | |
857d966e MH |
142 | static void tab_on_first(bool *first) |
143 | { | |
144 | if (!*first) | |
145 | printf("\t"); | |
146 | else | |
147 | *first = false; | |
148 | } | |
149 | ||
83b4934c | 150 | static void print_ssid(const uint8_t type, uint8_t len, const uint8_t *data) |
3563f4c5 | 151 | { |
83b4934c | 152 | printf(" "); |
748f8489 | 153 | print_ssid_escaped(len, data); |
3563f4c5 JB |
154 | printf("\n"); |
155 | } | |
156 | ||
83b4934c | 157 | static void print_supprates(const uint8_t type, uint8_t len, const uint8_t *data) |
3563f4c5 JB |
158 | { |
159 | int i; | |
160 | ||
83b4934c | 161 | printf(" "); |
3563f4c5 | 162 | |
83b4934c | 163 | for (i = 0; i < len; i++) { |
3563f4c5 JB |
164 | int r = data[i] & 0x7f; |
165 | printf("%d.%d%s ", r/2, 5*(r&1), data[i] & 0x80 ? "*":""); | |
166 | } | |
167 | printf("\n"); | |
168 | } | |
169 | ||
83b4934c | 170 | static void print_ds(const uint8_t type, uint8_t len, const uint8_t *data) |
3563f4c5 | 171 | { |
83b4934c | 172 | printf(" channel %d\n", data[0]); |
3563f4c5 JB |
173 | } |
174 | ||
2b690f0a | 175 | static const char *country_env_str(char environment) |
b7e8fa37 | 176 | { |
2b690f0a | 177 | switch (environment) { |
b7e8fa37 | 178 | case 'I': |
2b690f0a | 179 | return "Indoor only"; |
b7e8fa37 | 180 | case 'O': |
2b690f0a | 181 | return "Outdoor only"; |
b6c0d634 | 182 | case ' ': |
2b690f0a | 183 | return "Indoor/Outdoor"; |
b6c0d634 | 184 | default: |
2b690f0a | 185 | return "bogus"; |
b7e8fa37 | 186 | } |
2b690f0a LR |
187 | } |
188 | ||
189 | static void print_country(const uint8_t type, uint8_t len, const uint8_t *data) | |
190 | { | |
191 | printf(" %.*s", 2, data); | |
192 | ||
193 | printf("\tEnvironment: %s\n", country_env_str(data[2])); | |
194 | ||
195 | data += 3; | |
196 | len -= 3; | |
197 | ||
198 | if (len < 3) { | |
199 | printf("\t\tNo country IE triplets present\n"); | |
200 | return; | |
201 | } | |
202 | ||
203 | while (len >= 3) { | |
204 | int end_channel; | |
72725719 | 205 | union ieee80211_country_ie_triplet *triplet = (void *) data; |
2b690f0a LR |
206 | |
207 | if (triplet->ext.reg_extension_id >= IEEE80211_COUNTRY_EXTENSION_ID) { | |
208 | printf("\t\tExtension ID: %d Regulatory Class: %d Coverage class: %d (up to %dm)\n", | |
209 | triplet->ext.reg_extension_id, | |
210 | triplet->ext.reg_class, | |
211 | triplet->ext.coverage_class, | |
212 | triplet->ext.coverage_class * 450); | |
213 | ||
214 | data += 3; | |
215 | len -= 3; | |
216 | continue; | |
217 | } | |
218 | ||
219 | /* 2 GHz */ | |
220 | if (triplet->chans.first_channel <= 14) | |
221 | end_channel = triplet->chans.first_channel + (triplet->chans.num_channels - 1); | |
222 | else | |
223 | end_channel = triplet->chans.first_channel + (4 * (triplet->chans.num_channels - 1)); | |
224 | ||
225 | printf("\t\tChannels [%d - %d]\n", triplet->chans.first_channel, end_channel); | |
226 | ||
227 | data += 3; | |
228 | len -= 3; | |
229 | } | |
230 | ||
231 | return; | |
b7e8fa37 MH |
232 | } |
233 | ||
d1563a1b MH |
234 | static void print_powerconstraint(const uint8_t type, uint8_t len, const uint8_t *data) |
235 | { | |
236 | printf(" %d dB\n", data[0]); | |
237 | } | |
238 | ||
83b4934c | 239 | static void print_erp(const uint8_t type, uint8_t len, const uint8_t *data) |
fc4d1484 MH |
240 | { |
241 | if (data[0] == 0x00) | |
83b4934c | 242 | printf(" <no flags>"); |
fc4d1484 MH |
243 | if (data[0] & 0x01) |
244 | printf(" NonERP_Present"); | |
245 | if (data[0] & 0x02) | |
246 | printf(" Use_Protection"); | |
247 | if (data[0] & 0x04) | |
248 | printf(" Barker_Preamble_Mode"); | |
249 | printf("\n"); | |
250 | } | |
251 | ||
83b4934c | 252 | static void print_cipher(const uint8_t *data) |
857d966e MH |
253 | { |
254 | if (memcmp(data, wifi_oui, 3) == 0) { | |
255 | switch (data[3]) { | |
510e0e2f | 256 | case 0: |
857d966e MH |
257 | printf("Use group cipher suite"); |
258 | break; | |
510e0e2f | 259 | case 1: |
857d966e MH |
260 | printf("WEP-40"); |
261 | break; | |
510e0e2f | 262 | case 2: |
857d966e MH |
263 | printf("TKIP"); |
264 | break; | |
510e0e2f | 265 | case 4: |
857d966e MH |
266 | printf("CCMP"); |
267 | break; | |
510e0e2f | 268 | case 5: |
857d966e MH |
269 | printf("WEP-104"); |
270 | break; | |
271 | default: | |
332769c6 | 272 | printf("%.02x-%.02x-%.02x:%d", |
5594fd23 | 273 | data[0], data[1] ,data[2], data[3]); |
857d966e MH |
274 | break; |
275 | } | |
276 | } else if (memcmp(data, ieee80211_oui, 3) == 0) { | |
277 | switch (data[3]) { | |
510e0e2f | 278 | case 0: |
857d966e MH |
279 | printf("Use group cipher suite"); |
280 | break; | |
510e0e2f | 281 | case 1: |
857d966e MH |
282 | printf("WEP-40"); |
283 | break; | |
510e0e2f | 284 | case 2: |
857d966e MH |
285 | printf("TKIP"); |
286 | break; | |
510e0e2f | 287 | case 4: |
857d966e MH |
288 | printf("CCMP"); |
289 | break; | |
510e0e2f | 290 | case 5: |
857d966e MH |
291 | printf("WEP-104"); |
292 | break; | |
510e0e2f | 293 | case 6: |
857d966e MH |
294 | printf("AES-128-CMAC"); |
295 | break; | |
296 | default: | |
332769c6 | 297 | printf("%.02x-%.02x-%.02x:%d", |
5594fd23 | 298 | data[0], data[1] ,data[2], data[3]); |
857d966e MH |
299 | break; |
300 | } | |
301 | } else | |
332769c6 | 302 | printf("%.02x-%.02x-%.02x:%d", |
5594fd23 | 303 | data[0], data[1] ,data[2], data[3]); |
857d966e MH |
304 | } |
305 | ||
83b4934c | 306 | static void print_auth(const uint8_t *data) |
857d966e MH |
307 | { |
308 | if (memcmp(data, wifi_oui, 3) == 0) { | |
309 | switch (data[3]) { | |
510e0e2f | 310 | case 1: |
857d966e MH |
311 | printf("IEEE 802.1X"); |
312 | break; | |
510e0e2f | 313 | case 2: |
857d966e MH |
314 | printf("PSK"); |
315 | break; | |
316 | default: | |
332769c6 | 317 | printf("%.02x-%.02x-%.02x:%d", |
5594fd23 | 318 | data[0], data[1] ,data[2], data[3]); |
857d966e MH |
319 | break; |
320 | } | |
321 | } else if (memcmp(data, ieee80211_oui, 3) == 0) { | |
322 | switch (data[3]) { | |
510e0e2f | 323 | case 1: |
857d966e MH |
324 | printf("IEEE 802.1X"); |
325 | break; | |
510e0e2f | 326 | case 2: |
857d966e MH |
327 | printf("PSK"); |
328 | break; | |
0fe1c415 JB |
329 | case 3: |
330 | printf("FT/IEEE 802.1X"); | |
331 | break; | |
332 | case 4: | |
333 | printf("FT/PSK"); | |
334 | break; | |
335 | case 5: | |
336 | printf("IEEE 802.1X/SHA-256"); | |
337 | break; | |
338 | case 6: | |
339 | printf("PSK/SHA-256"); | |
340 | break; | |
857d966e | 341 | default: |
332769c6 | 342 | printf("%.02x-%.02x-%.02x:%d", |
5594fd23 | 343 | data[0], data[1] ,data[2], data[3]); |
857d966e MH |
344 | break; |
345 | } | |
346 | } else | |
332769c6 | 347 | printf("%.02x-%.02x-%.02x:%d", |
5594fd23 | 348 | data[0], data[1] ,data[2], data[3]); |
857d966e MH |
349 | } |
350 | ||
83b4934c JB |
351 | static void print_rsn_ie(const char *defcipher, const char *defauth, |
352 | uint8_t len, const uint8_t *data) | |
857d966e MH |
353 | { |
354 | bool first = true; | |
355 | __u16 version, count, capa; | |
356 | int i; | |
357 | ||
857d966e MH |
358 | version = data[0] + (data[1] << 8); |
359 | tab_on_first(&first); | |
360 | printf("\t * Version: %d\n", version); | |
361 | ||
362 | data += 2; | |
363 | len -= 2; | |
364 | ||
365 | if (len < 4) { | |
366 | tab_on_first(&first); | |
367 | printf("\t * Group cipher: %s\n", defcipher); | |
368 | printf("\t * Pairwise ciphers: %s\n", defcipher); | |
369 | return; | |
370 | } | |
371 | ||
372 | tab_on_first(&first); | |
373 | printf("\t * Group cipher: "); | |
374 | print_cipher(data); | |
375 | printf("\n"); | |
376 | ||
377 | data += 4; | |
378 | len -= 4; | |
379 | ||
380 | if (len < 2) { | |
381 | tab_on_first(&first); | |
382 | printf("\t * Pairwise ciphers: %s\n", defcipher); | |
383 | return; | |
384 | } | |
385 | ||
386 | count = data[0] | (data[1] << 8); | |
31d477fb MH |
387 | if (2 + (count * 4) > len) |
388 | goto invalid; | |
389 | ||
857d966e MH |
390 | tab_on_first(&first); |
391 | printf("\t * Pairwise ciphers:"); | |
31d477fb | 392 | for (i = 0; i < count; i++) { |
857d966e MH |
393 | printf(" "); |
394 | print_cipher(data + 2 + (i * 4)); | |
395 | } | |
396 | printf("\n"); | |
397 | ||
398 | data += 2 + (count * 4); | |
399 | len -= 2 + (count * 4); | |
400 | ||
401 | if (len < 2) { | |
402 | tab_on_first(&first); | |
403 | printf("\t * Authentication suites: %s\n", defauth); | |
404 | return; | |
405 | } | |
406 | ||
407 | count = data[0] | (data[1] << 8); | |
31d477fb MH |
408 | if (2 + (count * 4) > len) |
409 | goto invalid; | |
410 | ||
857d966e MH |
411 | tab_on_first(&first); |
412 | printf("\t * Authentication suites:"); | |
83b4934c | 413 | for (i = 0; i < count; i++) { |
857d966e MH |
414 | printf(" "); |
415 | print_auth(data + 2 + (i * 4)); | |
416 | } | |
417 | printf("\n"); | |
418 | ||
419 | data += 2 + (count * 4); | |
420 | len -= 2 + (count * 4); | |
421 | ||
6a4f24e8 JB |
422 | if (len >= 2) { |
423 | capa = data[0] | (data[1] << 8); | |
424 | tab_on_first(&first); | |
cadbe89a JB |
425 | printf("\t * Capabilities:"); |
426 | if (capa & 0x0001) | |
427 | printf(" PreAuth"); | |
428 | if (capa & 0x0002) | |
429 | printf(" NoPairwise"); | |
430 | switch ((capa & 0x000c) >> 2) { | |
431 | case 0: | |
432 | break; | |
433 | case 1: | |
434 | printf(" 2-PTKSA-RC"); | |
435 | break; | |
436 | case 2: | |
437 | printf(" 4-PTKSA-RC"); | |
438 | break; | |
439 | case 3: | |
440 | printf(" 16-PTKSA-RC"); | |
441 | break; | |
442 | } | |
443 | switch ((capa & 0x0030) >> 4) { | |
444 | case 0: | |
445 | break; | |
446 | case 1: | |
447 | printf(" 2-GTKSA-RC"); | |
448 | break; | |
449 | case 2: | |
450 | printf(" 4-GTKSA-RC"); | |
451 | break; | |
452 | case 3: | |
453 | printf(" 16-GTKSA-RC"); | |
454 | break; | |
455 | } | |
456 | if (capa & 0x0040) | |
457 | printf(" MFP-required"); | |
458 | if (capa & 0x0080) | |
459 | printf(" MFP-capable"); | |
460 | if (capa & 0x0200) | |
461 | printf(" Peerkey-enabled"); | |
462 | if (capa & 0x0400) | |
463 | printf(" SPP-AMSDU-capable"); | |
464 | if (capa & 0x0800) | |
465 | printf(" SPP-AMSDU-required"); | |
466 | printf(" (0x%.4x)\n", capa); | |
6a4f24e8 JB |
467 | data += 2; |
468 | len -= 2; | |
469 | } | |
31d477fb | 470 | |
5ba3f523 JB |
471 | if (len >= 2) { |
472 | int pmkid_count = data[0] | (data[1] << 8); | |
473 | ||
474 | if (len >= 2 + 16 * pmkid_count) { | |
475 | tab_on_first(&first); | |
476 | printf("\t * %d PMKIDs\n", pmkid_count); | |
477 | /* not printing PMKID values */ | |
478 | data += 2 + 16 * pmkid_count; | |
479 | len -= 2 + 16 * pmkid_count; | |
480 | } else | |
481 | goto invalid; | |
482 | } | |
483 | ||
484 | if (len >= 4) { | |
485 | tab_on_first(&first); | |
486 | printf("\t * Group mgmt cipher suite: "); | |
487 | print_cipher(data); | |
488 | printf("\n"); | |
489 | data += 4; | |
490 | len -= 4; | |
491 | } | |
492 | ||
cadbe89a | 493 | invalid: |
31d477fb MH |
494 | if (len != 0) { |
495 | printf("\t\t * bogus tail data (%d):", len); | |
496 | while (len) { | |
497 | printf(" %.2x", *data); | |
498 | data++; | |
499 | len--; | |
500 | } | |
501 | printf("\n"); | |
502 | } | |
857d966e MH |
503 | } |
504 | ||
83b4934c | 505 | static void print_rsn(const uint8_t type, uint8_t len, const uint8_t *data) |
857d966e | 506 | { |
83b4934c | 507 | print_rsn_ie("CCMP", "IEEE 802.1X", len, data); |
857d966e MH |
508 | } |
509 | ||
0c445c24 LR |
510 | static void print_ht_capa(const uint8_t type, uint8_t len, const uint8_t *data) |
511 | { | |
357c1a5d | 512 | printf("\n"); |
7ddfb679 JB |
513 | print_ht_capability(data[0] | (data[1] << 8)); |
514 | print_ampdu_length(data[2] & 3); | |
c79c7464 | 515 | print_ampdu_spacing((data[2] >> 2) & 7); |
7ddfb679 | 516 | print_ht_mcs(data + 3); |
0c445c24 LR |
517 | } |
518 | ||
be7602fb JB |
519 | static void print_ht_op(const uint8_t type, uint8_t len, const uint8_t *data) |
520 | { | |
521 | static const char *offset[4] = { | |
522 | "no secondary", | |
523 | "above", | |
524 | "[reserved!]", | |
525 | "below", | |
526 | }; | |
527 | static const char *protection[4] = { | |
528 | "no", | |
529 | "nonmember", | |
530 | "20 MHz", | |
531 | "non-HT mixed", | |
532 | }; | |
533 | static const char *sta_chan_width[2] = { | |
534 | "20 MHz", | |
535 | "any", | |
536 | }; | |
537 | ||
538 | printf("\n"); | |
539 | printf("\t\t * primary channel: %d\n", data[0]); | |
540 | printf("\t\t * secondary channel offset: %s\n", | |
541 | offset[data[1] & 0x3]); | |
542 | printf("\t\t * STA channel width: %s\n", sta_chan_width[(data[1] & 0x4)>>2]); | |
543 | printf("\t\t * RIFS: %d\n", (data[1] & 0x8)>>3); | |
544 | printf("\t\t * HT protection: %s\n", protection[data[2] & 0x3]); | |
545 | printf("\t\t * non-GF present: %d\n", (data[2] & 0x4) >> 2); | |
546 | printf("\t\t * OBSS non-GF present: %d\n", (data[2] & 0x10) >> 4); | |
547 | printf("\t\t * dual beacon: %d\n", (data[4] & 0x40) >> 6); | |
548 | printf("\t\t * dual CTS protection: %d\n", (data[4] & 0x80) >> 7); | |
549 | printf("\t\t * STBC beacon: %d\n", data[5] & 0x1); | |
550 | printf("\t\t * L-SIG TXOP Prot: %d\n", (data[5] & 0x2) >> 1); | |
551 | printf("\t\t * PCO active: %d\n", (data[5] & 0x4) >> 2); | |
552 | printf("\t\t * PCO phase: %d\n", (data[5] & 0x8) >> 3); | |
553 | } | |
554 | ||
83b4934c | 555 | static void print_capabilities(const uint8_t type, uint8_t len, const uint8_t *data) |
9b880b00 | 556 | { |
31d2d259 JB |
557 | int i, base, bit; |
558 | bool first = true; | |
559 | ||
560 | ||
561 | for (i = 0; i < len; i++) { | |
562 | base = i * 8; | |
563 | ||
564 | for (bit = 0; bit < 8; bit++) { | |
565 | if (!(data[i] & (1 << bit))) | |
566 | continue; | |
567 | ||
568 | if (!first) | |
569 | printf(","); | |
570 | else | |
571 | first = false; | |
572 | ||
573 | switch (bit + base) { | |
574 | case 0: | |
575 | printf(" HT Information Exchange Supported"); | |
576 | break; | |
577 | case 1: | |
578 | printf(" On-demand Beacon"); | |
579 | break; | |
580 | case 2: | |
581 | printf(" Extended Channel Switching"); | |
582 | break; | |
583 | case 3: | |
584 | printf(" Wave Indication"); | |
585 | break; | |
586 | case 4: | |
587 | printf(" PSMP Capability"); | |
588 | break; | |
589 | case 5: | |
590 | printf(" Service Interval Granularity"); | |
591 | break; | |
592 | case 6: | |
593 | printf(" S-PSMP Capability"); | |
594 | break; | |
595 | default: | |
596 | printf(" %d", bit); | |
597 | break; | |
598 | } | |
599 | } | |
600 | } | |
9b880b00 | 601 | |
9b880b00 MH |
602 | printf("\n"); |
603 | } | |
604 | ||
575280cc JM |
605 | static void print_tim(const uint8_t type, uint8_t len, const uint8_t *data) |
606 | { | |
607 | printf(" DTIM Count %u DTIM Period %u Bitmap Control 0x%x " | |
608 | "Bitmap[0] 0x%x", | |
609 | data[0], data[1], data[2], data[3]); | |
610 | if (len - 4) | |
611 | printf(" (+ %u octet%s)", len - 4, len - 4 == 1 ? "" : "s"); | |
612 | printf("\n"); | |
613 | } | |
614 | ||
83b4934c JB |
615 | struct ie_print { |
616 | const char *name; | |
617 | void (*print)(const uint8_t type, uint8_t len, const uint8_t *data); | |
618 | uint8_t minlen, maxlen; | |
febeb0c0 | 619 | uint8_t flags; |
764fe753 JB |
620 | }; |
621 | ||
83b4934c JB |
622 | static void print_ie(const struct ie_print *p, const uint8_t type, |
623 | uint8_t len, const uint8_t *data) | |
4673a894 | 624 | { |
83b4934c JB |
625 | int i; |
626 | ||
627 | if (!p->print) | |
628 | return; | |
629 | ||
630 | printf("\t%s:", p->name); | |
631 | if (len < p->minlen || len > p->maxlen) { | |
632 | if (len > 1) { | |
633 | printf(" <invalid: %d bytes:", len); | |
634 | for (i = 0; i < len; i++) | |
635 | printf(" %.02x", data[i]); | |
636 | printf(">\n"); | |
637 | } else if (len) | |
638 | printf(" <invalid: 1 byte: %.02x>\n", data[0]); | |
639 | else | |
640 | printf(" <invalid: no data>\n"); | |
641 | return; | |
642 | } | |
643 | ||
644 | p->print(type, len, data); | |
645 | } | |
646 | ||
647 | #define PRINT_IGN { \ | |
648 | .name = "IGNORE", \ | |
649 | .print = NULL, \ | |
650 | .minlen = 0, \ | |
651 | .maxlen = 255, \ | |
4673a894 JB |
652 | } |
653 | ||
83b4934c | 654 | static const struct ie_print ieprinters[] = { |
febeb0c0 JB |
655 | [0] = { "SSID", print_ssid, 0, 32, BIT(PRINT_SCAN) | BIT(PRINT_LINK), }, |
656 | [1] = { "Supported rates", print_supprates, 0, 255, BIT(PRINT_SCAN), }, | |
014d581a | 657 | [3] = { "DS Parameter set", print_ds, 1, 1, BIT(PRINT_SCAN), }, |
575280cc | 658 | [5] = { "TIM", print_tim, 4, 255, BIT(PRINT_SCAN), }, |
febeb0c0 JB |
659 | [7] = { "Country", print_country, 3, 255, BIT(PRINT_SCAN), }, |
660 | [32] = { "Power constraint", print_powerconstraint, 1, 1, BIT(PRINT_SCAN), }, | |
661 | [42] = { "ERP", print_erp, 1, 255, BIT(PRINT_SCAN), }, | |
a2e61861 | 662 | [45] = { "HT capabilities", print_ht_capa, 26, 26, BIT(PRINT_SCAN), }, |
be7602fb | 663 | [61] = { "HT operation", print_ht_op, 22, 22, BIT(PRINT_SCAN), }, |
febeb0c0 JB |
664 | [48] = { "RSN", print_rsn, 2, 255, BIT(PRINT_SCAN), }, |
665 | [50] = { "Extended supported rates", print_supprates, 0, 255, BIT(PRINT_SCAN), }, | |
666 | [127] = { "Extended capabilities", print_capabilities, 0, 255, BIT(PRINT_SCAN), }, | |
83b4934c JB |
667 | }; |
668 | ||
669 | static void print_wifi_wpa(const uint8_t type, uint8_t len, const uint8_t *data) | |
670 | { | |
671 | print_rsn_ie("TKIP", "IEEE 802.1X", len, data); | |
672 | } | |
673 | ||
1cab57eb JB |
674 | static bool print_wifi_wmm_param(const uint8_t *data, uint8_t len) |
675 | { | |
676 | int i; | |
677 | static const char *aci_tbl[] = { "BE", "BK", "VI", "VO" }; | |
678 | ||
679 | if (len < 19) | |
680 | goto invalid; | |
681 | ||
682 | if (data[0] != 1) { | |
cee4fe20 | 683 | printf("Parameter: not version 1: "); |
1cab57eb JB |
684 | return false; |
685 | } | |
686 | ||
89ea706f | 687 | printf("\t * Parameter version 1"); |
1cab57eb JB |
688 | |
689 | data++; | |
690 | ||
691 | if (data[0] & 0x80) | |
89ea706f | 692 | printf("\n\t\t * u-APSD"); |
1cab57eb JB |
693 | |
694 | data += 2; | |
695 | ||
696 | for (i = 0; i < 4; i++) { | |
89ea706f | 697 | printf("\n\t\t * %s:", aci_tbl[(data[0] >> 5) & 3]); |
1cab57eb JB |
698 | if (data[4] & 0x10) |
699 | printf(" acm"); | |
700 | printf(" CW %d-%d", (1 << (data[1] & 0xf)) - 1, | |
701 | (1 << (data[1] >> 4)) - 1); | |
a2a4c265 | 702 | printf(", AIFSN %d", data[0] & 0xf); |
1cab57eb | 703 | if (data[2] | data[3]) |
cee4fe20 | 704 | printf(", TXOP %d usec", (data[2] + (data[3] << 8)) * 32); |
1cab57eb JB |
705 | data += 4; |
706 | } | |
707 | ||
708 | printf("\n"); | |
709 | return true; | |
710 | ||
711 | invalid: | |
712 | printf("invalid: "); | |
713 | return false; | |
714 | } | |
715 | ||
83b4934c | 716 | static void print_wifi_wmm(const uint8_t type, uint8_t len, const uint8_t *data) |
6ff0c93a MH |
717 | { |
718 | int i; | |
719 | ||
6ff0c93a MH |
720 | switch (data[0]) { |
721 | case 0x00: | |
83b4934c | 722 | printf(" information:"); |
6ff0c93a MH |
723 | break; |
724 | case 0x01: | |
1cab57eb JB |
725 | if (print_wifi_wmm_param(data + 1, len - 1)) |
726 | return; | |
6ff0c93a MH |
727 | break; |
728 | default: | |
83b4934c | 729 | printf(" type %d:", data[0]); |
6ff0c93a MH |
730 | break; |
731 | } | |
732 | ||
1cab57eb JB |
733 | for(i = 1; i < len; i++) |
734 | printf(" %.02x", data[i]); | |
6ff0c93a MH |
735 | printf("\n"); |
736 | } | |
737 | ||
a6816965 JM |
738 | static const char * wifi_wps_dev_passwd_id(uint16_t id) |
739 | { | |
740 | switch (id) { | |
741 | case 0: | |
742 | return "Default (PIN)"; | |
743 | case 1: | |
744 | return "User-specified"; | |
745 | case 2: | |
746 | return "Machine-specified"; | |
747 | case 3: | |
748 | return "Rekey"; | |
749 | case 4: | |
750 | return "PushButton"; | |
751 | case 5: | |
752 | return "Registrar-specified"; | |
753 | default: | |
754 | return "??"; | |
755 | } | |
756 | } | |
757 | ||
83b4934c | 758 | static void print_wifi_wps(const uint8_t type, uint8_t len, const uint8_t *data) |
4673a894 JB |
759 | { |
760 | bool first = true; | |
761 | __u16 subtype, sublen; | |
762 | ||
4673a894 JB |
763 | while (len >= 4) { |
764 | subtype = (data[0] << 8) + data[1]; | |
765 | sublen = (data[2] << 8) + data[3]; | |
766 | if (sublen > len) | |
767 | break; | |
768 | ||
769 | switch (subtype) { | |
770 | case 0x104a: | |
771 | tab_on_first(&first); | |
dffc6750 | 772 | printf("\t * Version: %d.%d\n", data[4] >> 4, data[4] & 0xF); |
4673a894 JB |
773 | break; |
774 | case 0x1011: | |
775 | tab_on_first(&first); | |
776 | printf("\t * Device name: %.*s\n", sublen, data + 4); | |
777 | break; | |
a6816965 JM |
778 | case 0x1012: { |
779 | uint16_t id; | |
780 | tab_on_first(&first); | |
781 | if (sublen != 2) { | |
782 | printf("\t * Device Password ID: (invalid " | |
783 | "length %d)\n", sublen); | |
784 | break; | |
785 | } | |
786 | id = data[4] << 8 | data[5]; | |
787 | printf("\t * Device Password ID: %u (%s)\n", | |
788 | id, wifi_wps_dev_passwd_id(id)); | |
789 | break; | |
790 | } | |
4673a894 JB |
791 | case 0x1021: |
792 | tab_on_first(&first); | |
793 | printf("\t * Manufacturer: %.*s\n", sublen, data + 4); | |
794 | break; | |
795 | case 0x1023: | |
796 | tab_on_first(&first); | |
797 | printf("\t * Model: %.*s\n", sublen, data + 4); | |
798 | break; | |
a6816965 JM |
799 | case 0x1024: |
800 | tab_on_first(&first); | |
801 | printf("\t * Model Number: %.*s\n", sublen, data + 4); | |
802 | break; | |
803 | case 0x103b: { | |
804 | __u8 val = data[4]; | |
805 | tab_on_first(&first); | |
806 | printf("\t * Response Type: %d%s\n", | |
807 | val, val == 3 ? " (AP)" : ""); | |
808 | break; | |
809 | } | |
810 | case 0x103c: { | |
811 | __u8 val = data[4]; | |
812 | tab_on_first(&first); | |
813 | printf("\t * RF Bands: 0x%x\n", val); | |
814 | break; | |
815 | } | |
816 | case 0x1041: { | |
817 | __u8 val = data[4]; | |
818 | tab_on_first(&first); | |
819 | printf("\t * Selected Registrar: 0x%x\n", val); | |
820 | break; | |
821 | } | |
822 | case 0x1042: | |
823 | tab_on_first(&first); | |
824 | printf("\t * Serial Number: %.*s\n", sublen, data + 4); | |
825 | break; | |
826 | case 0x1044: { | |
827 | __u8 val = data[4]; | |
828 | tab_on_first(&first); | |
829 | printf("\t * Wi-Fi Protected Setup State: %d%s%s\n", | |
830 | val, | |
831 | val == 1 ? " (Unconfigured)" : "", | |
832 | val == 2 ? " (Configured)" : ""); | |
833 | break; | |
834 | } | |
835 | case 0x1054: { | |
836 | tab_on_first(&first); | |
837 | if (sublen != 8) { | |
838 | printf("\t * Primary Device Type: (invalid " | |
839 | "length %d)\n", sublen); | |
840 | break; | |
841 | } | |
842 | printf("\t * Primary Device Type: " | |
843 | "%u-%02x%02x%02x%02x-%u\n", | |
844 | data[4] << 8 | data[5], | |
845 | data[6], data[7], data[8], data[9], | |
846 | data[10] << 8 | data[11]); | |
847 | break; | |
848 | } | |
7ee5a865 | 849 | case 0x1057: { |
fe31a22e | 850 | __u8 val = data[4]; |
7ee5a865 | 851 | tab_on_first(&first); |
fe31a22e | 852 | printf("\t * AP setup locked: 0x%.2x\n", val); |
7ee5a865 JB |
853 | break; |
854 | } | |
a6816965 JM |
855 | case 0x1008: |
856 | case 0x1053: { | |
4673a894 JB |
857 | __u16 meth = (data[4] << 8) + data[5]; |
858 | bool comma = false; | |
859 | tab_on_first(&first); | |
a6816965 JM |
860 | printf("\t * %sConfig methods:", |
861 | subtype == 0x1053 ? "Selected Registrar ": ""); | |
4673a894 JB |
862 | #define T(bit, name) do { \ |
863 | if (meth & (1<<bit)) { \ | |
864 | if (comma) \ | |
865 | printf(","); \ | |
866 | comma = true; \ | |
867 | printf(" " name); \ | |
868 | } } while (0) | |
869 | T(0, "USB"); | |
870 | T(1, "Ethernet"); | |
871 | T(2, "Label"); | |
872 | T(3, "Display"); | |
873 | T(4, "Ext. NFC"); | |
874 | T(5, "Int. NFC"); | |
875 | T(6, "NFC Intf."); | |
876 | T(7, "PBC"); | |
877 | T(8, "Keypad"); | |
878 | printf("\n"); | |
879 | break; | |
880 | #undef T | |
881 | } | |
2650d46b JB |
882 | default: { |
883 | const __u8 *subdata = data + 4; | |
884 | __u16 tmplen = sublen; | |
885 | ||
886 | tab_on_first(&first); | |
887 | printf("\t * Unknown TLV (%#.4x, %d bytes):", | |
888 | subtype, tmplen); | |
889 | while (tmplen) { | |
890 | printf(" %.2x", *subdata); | |
891 | subdata++; | |
892 | tmplen--; | |
893 | } | |
894 | printf("\n"); | |
4673a894 JB |
895 | break; |
896 | } | |
2650d46b | 897 | } |
4673a894 JB |
898 | |
899 | data += sublen + 4; | |
900 | len -= sublen + 4; | |
901 | } | |
902 | ||
903 | if (len != 0) { | |
904 | printf("\t\t * bogus tail data (%d):", len); | |
905 | while (len) { | |
906 | printf(" %.2x", *data); | |
907 | data++; | |
908 | len--; | |
909 | } | |
910 | printf("\n"); | |
911 | } | |
912 | } | |
913 | ||
83b4934c | 914 | static const struct ie_print wifiprinters[] = { |
febeb0c0 JB |
915 | [1] = { "WPA", print_wifi_wpa, 2, 255, BIT(PRINT_SCAN), }, |
916 | [2] = { "WMM", print_wifi_wmm, 1, 255, BIT(PRINT_SCAN), }, | |
917 | [4] = { "WPS", print_wifi_wps, 0, 255, BIT(PRINT_SCAN), }, | |
4673a894 JB |
918 | }; |
919 | ||
764fe753 | 920 | static void print_vendor(unsigned char len, unsigned char *data, |
febeb0c0 | 921 | bool unknown, enum print_ie_type ptype) |
3563f4c5 JB |
922 | { |
923 | int i; | |
924 | ||
fbf80af5 | 925 | if (len < 3) { |
4673a894 | 926 | printf("\tVendor specific: <too short> data:"); |
fbf80af5 JB |
927 | for(i = 0; i < len; i++) |
928 | printf(" %.02x", data[i]); | |
929 | printf("\n"); | |
930 | return; | |
931 | } | |
932 | ||
857d966e | 933 | if (len >= 4 && memcmp(data, wifi_oui, 3) == 0) { |
febeb0c0 JB |
934 | if (data[3] < ARRAY_SIZE(wifiprinters) && |
935 | wifiprinters[data[3]].name && | |
936 | wifiprinters[data[3]].flags & BIT(ptype)) { | |
83b4934c JB |
937 | print_ie(&wifiprinters[data[3]], data[3], len - 4, data + 4); |
938 | return; | |
939 | } | |
febeb0c0 | 940 | if (!unknown) |
4673a894 | 941 | return; |
857d966e | 942 | printf("\tWiFi OUI %#.2x, data:", data[3]); |
4673a894 JB |
943 | for(i = 0; i < len - 4; i++) |
944 | printf(" %.02x", data[i + 4]); | |
945 | printf("\n"); | |
946 | return; | |
947 | } | |
948 | ||
febeb0c0 | 949 | if (!unknown) |
764fe753 JB |
950 | return; |
951 | ||
fbf80af5 | 952 | printf("\tVendor specific: OUI %.2x:%.2x:%.2x, data:", |
3563f4c5 | 953 | data[0], data[1], data[2]); |
fbf80af5 JB |
954 | for (i = 3; i < len; i++) |
955 | printf(" %.2x", data[i]); | |
3563f4c5 JB |
956 | printf("\n"); |
957 | } | |
958 | ||
febeb0c0 JB |
959 | void print_ies(unsigned char *ie, int ielen, bool unknown, |
960 | enum print_ie_type ptype) | |
3563f4c5 JB |
961 | { |
962 | while (ielen >= 2 && ielen >= ie[1]) { | |
febeb0c0 JB |
963 | if (ie[0] < ARRAY_SIZE(ieprinters) && |
964 | ieprinters[ie[0]].name && | |
965 | ieprinters[ie[0]].flags & BIT(ptype)) { | |
83b4934c | 966 | print_ie(&ieprinters[ie[0]], ie[0], ie[1], ie + 2); |
764fe753 | 967 | } else if (ie[0] == 221 /* vendor */) { |
febeb0c0 JB |
968 | print_vendor(ie[1], ie + 2, unknown, ptype); |
969 | } else if (unknown) { | |
3563f4c5 JB |
970 | int i; |
971 | ||
8086b700 | 972 | printf("\tUnknown IE (%d):", ie[0]); |
3563f4c5 | 973 | for (i=0; i<ie[1]; i++) |
8086b700 | 974 | printf(" %.2x", ie[2+i]); |
3563f4c5 JB |
975 | printf("\n"); |
976 | } | |
977 | ielen -= ie[1] + 2; | |
978 | ie += ie[1] + 2; | |
979 | } | |
980 | } | |
981 | ||
982 | static int print_bss_handler(struct nl_msg *msg, void *arg) | |
983 | { | |
984 | struct nlattr *tb[NL80211_ATTR_MAX + 1]; | |
985 | struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); | |
986 | struct nlattr *bss[NL80211_BSS_MAX + 1]; | |
987 | char mac_addr[20], dev[20]; | |
988 | static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = { | |
989 | [NL80211_BSS_TSF] = { .type = NLA_U64 }, | |
990 | [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 }, | |
991 | [NL80211_BSS_BSSID] = { }, | |
992 | [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 }, | |
993 | [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 }, | |
994 | [NL80211_BSS_INFORMATION_ELEMENTS] = { }, | |
f2e17e1f JB |
995 | [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 }, |
996 | [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 }, | |
a56117a6 | 997 | [NL80211_BSS_STATUS] = { .type = NLA_U32 }, |
c04a78df | 998 | [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 }, |
575280cc | 999 | [NL80211_BSS_BEACON_IES] = { }, |
3563f4c5 | 1000 | }; |
febeb0c0 | 1001 | struct scan_params *params = arg; |
1c5bcd9c | 1002 | int show = params->show_both_ie_sets ? 2 : 1; |
3563f4c5 JB |
1003 | |
1004 | nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), | |
1005 | genlmsg_attrlen(gnlh, 0), NULL); | |
1006 | ||
1007 | if (!tb[NL80211_ATTR_BSS]) { | |
5fe70c0e | 1008 | fprintf(stderr, "bss info missing!\n"); |
3563f4c5 JB |
1009 | return NL_SKIP; |
1010 | } | |
1011 | if (nla_parse_nested(bss, NL80211_BSS_MAX, | |
1012 | tb[NL80211_ATTR_BSS], | |
1013 | bss_policy)) { | |
5fe70c0e | 1014 | fprintf(stderr, "failed to parse nested attributes!\n"); |
3563f4c5 JB |
1015 | return NL_SKIP; |
1016 | } | |
1017 | ||
1018 | if (!bss[NL80211_BSS_BSSID]) | |
1019 | return NL_SKIP; | |
1020 | ||
1021 | mac_addr_n2a(mac_addr, nla_data(bss[NL80211_BSS_BSSID])); | |
1022 | if_indextoname(nla_get_u32(tb[NL80211_ATTR_IFINDEX]), dev); | |
a56117a6 JB |
1023 | printf("BSS %s (on %s)", mac_addr, dev); |
1024 | ||
1025 | if (bss[NL80211_BSS_STATUS]) { | |
1026 | switch (nla_get_u32(bss[NL80211_BSS_STATUS])) { | |
1027 | case NL80211_BSS_STATUS_AUTHENTICATED: | |
1028 | printf(" -- authenticated"); | |
1029 | break; | |
1030 | case NL80211_BSS_STATUS_ASSOCIATED: | |
1031 | printf(" -- associated"); | |
1032 | break; | |
1033 | case NL80211_BSS_STATUS_IBSS_JOINED: | |
1034 | printf(" -- joined"); | |
1035 | break; | |
1036 | default: | |
1037 | printf(" -- unknown status: %d", | |
1038 | nla_get_u32(bss[NL80211_BSS_STATUS])); | |
1039 | break; | |
1040 | } | |
1041 | } | |
1042 | printf("\n"); | |
3563f4c5 | 1043 | |
e7109a8a JB |
1044 | if (bss[NL80211_BSS_TSF]) { |
1045 | unsigned long long tsf; | |
1046 | tsf = (unsigned long long)nla_get_u64(bss[NL80211_BSS_TSF]); | |
1047 | printf("\tTSF: %llu usec (%llud, %.2lld:%.2llu:%.2llu)\n", | |
1048 | tsf, tsf/1000/1000/60/60/24, (tsf/1000/1000/60/60) % 24, | |
1049 | (tsf/1000/1000/60) % 60, (tsf/1000/1000) % 60); | |
1050 | } | |
3563f4c5 JB |
1051 | if (bss[NL80211_BSS_FREQUENCY]) |
1052 | printf("\tfreq: %d\n", | |
1053 | nla_get_u32(bss[NL80211_BSS_FREQUENCY])); | |
1054 | if (bss[NL80211_BSS_BEACON_INTERVAL]) | |
1055 | printf("\tbeacon interval: %d\n", | |
1056 | nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL])); | |
92a04ecd MH |
1057 | if (bss[NL80211_BSS_CAPABILITY]) { |
1058 | __u16 capa = nla_get_u16(bss[NL80211_BSS_CAPABILITY]); | |
1059 | printf("\tcapability:"); | |
1060 | if (capa & WLAN_CAPABILITY_ESS) | |
1061 | printf(" ESS"); | |
1062 | if (capa & WLAN_CAPABILITY_IBSS) | |
1063 | printf(" IBSS"); | |
1064 | if (capa & WLAN_CAPABILITY_PRIVACY) | |
1065 | printf(" Privacy"); | |
1066 | if (capa & WLAN_CAPABILITY_SHORT_PREAMBLE) | |
1067 | printf(" ShortPreamble"); | |
1068 | if (capa & WLAN_CAPABILITY_PBCC) | |
1069 | printf(" PBCC"); | |
1070 | if (capa & WLAN_CAPABILITY_CHANNEL_AGILITY) | |
1071 | printf(" ChannelAgility"); | |
1072 | if (capa & WLAN_CAPABILITY_SPECTRUM_MGMT) | |
1073 | printf(" SpectrumMgmt"); | |
1074 | if (capa & WLAN_CAPABILITY_QOS) | |
1075 | printf(" QoS"); | |
1076 | if (capa & WLAN_CAPABILITY_SHORT_SLOT_TIME) | |
1077 | printf(" ShortSlotTime"); | |
1078 | if (capa & WLAN_CAPABILITY_APSD) | |
1079 | printf(" APSD"); | |
1080 | if (capa & WLAN_CAPABILITY_DSSS_OFDM) | |
1081 | printf(" DSSS-OFDM"); | |
1082 | printf(" (0x%.4x)\n", capa); | |
1083 | } | |
f2e17e1f JB |
1084 | if (bss[NL80211_BSS_SIGNAL_MBM]) { |
1085 | int s = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]); | |
1086 | printf("\tsignal: %d.%.2d dBm\n", s/100, s%100); | |
1087 | } | |
1088 | if (bss[NL80211_BSS_SIGNAL_UNSPEC]) { | |
1089 | unsigned char s = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]); | |
1090 | printf("\tsignal: %d/100\n", s); | |
1091 | } | |
c04a78df HS |
1092 | if (bss[NL80211_BSS_SEEN_MS_AGO]) { |
1093 | int age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]); | |
1094 | printf("\tlast seen: %d ms ago\n", age); | |
1095 | } | |
1c5bcd9c JB |
1096 | |
1097 | if (bss[NL80211_BSS_INFORMATION_ELEMENTS] && show--) { | |
575280cc JM |
1098 | if (bss[NL80211_BSS_BEACON_IES]) |
1099 | printf("\tInformation elements from Probe Response " | |
1100 | "frame:\n"); | |
3563f4c5 | 1101 | print_ies(nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]), |
764fe753 | 1102 | nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]), |
febeb0c0 | 1103 | params->unknown, params->type); |
575280cc | 1104 | } |
1c5bcd9c | 1105 | if (bss[NL80211_BSS_BEACON_IES] && show--) { |
575280cc JM |
1106 | printf("\tInformation elements from Beacon frame:\n"); |
1107 | print_ies(nla_data(bss[NL80211_BSS_BEACON_IES]), | |
1108 | nla_len(bss[NL80211_BSS_BEACON_IES]), | |
1109 | params->unknown, params->type); | |
1110 | } | |
3563f4c5 JB |
1111 | |
1112 | return NL_SKIP; | |
1113 | } | |
1114 | ||
764fe753 | 1115 | static struct scan_params scan_params; |
3563f4c5 | 1116 | |
7c37a24d JB |
1117 | static int handle_scan_dump(struct nl80211_state *state, |
1118 | struct nl_cb *cb, | |
3563f4c5 JB |
1119 | struct nl_msg *msg, |
1120 | int argc, char **argv) | |
1121 | { | |
764fe753 JB |
1122 | if (argc > 1) |
1123 | return 1; | |
1124 | ||
1c5bcd9c JB |
1125 | memset(&scan_params, 0, sizeof(scan_params)); |
1126 | ||
764fe753 JB |
1127 | if (argc == 1 && !strcmp(argv[0], "-u")) |
1128 | scan_params.unknown = true; | |
575280cc JM |
1129 | else if (argc == 1 && !strcmp(argv[0], "-b")) |
1130 | scan_params.show_both_ie_sets = true; | |
764fe753 | 1131 | |
febeb0c0 JB |
1132 | scan_params.type = PRINT_SCAN; |
1133 | ||
764fe753 JB |
1134 | nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, print_bss_handler, |
1135 | &scan_params); | |
3563f4c5 JB |
1136 | return 0; |
1137 | } | |
a5fe4ef2 JB |
1138 | |
1139 | static int handle_scan_combined(struct nl80211_state *state, | |
1140 | struct nl_cb *cb, | |
1141 | struct nl_msg *msg, | |
1142 | int argc, char **argv) | |
1143 | { | |
559a1713 | 1144 | char **trig_argv; |
a5fe4ef2 JB |
1145 | static char *dump_argv[] = { |
1146 | NULL, | |
1147 | "scan", | |
1148 | "dump", | |
92649eab | 1149 | NULL, |
a5fe4ef2 JB |
1150 | }; |
1151 | static const __u32 cmds[] = { | |
1152 | NL80211_CMD_NEW_SCAN_RESULTS, | |
1153 | NL80211_CMD_SCAN_ABORTED, | |
1154 | }; | |
559a1713 | 1155 | int trig_argc, dump_argc, err; |
a5fe4ef2 | 1156 | |
559a1713 JB |
1157 | if (argc >= 3 && !strcmp(argv[2], "-u")) { |
1158 | dump_argc = 4; | |
1159 | dump_argv[3] = "-u"; | |
575280cc JM |
1160 | } else if (argc >= 3 && !strcmp(argv[2], "-b")) { |
1161 | dump_argc = 4; | |
1162 | dump_argv[3] = "-b"; | |
559a1713 JB |
1163 | } else |
1164 | dump_argc = 3; | |
1165 | ||
1166 | trig_argc = 3 + (argc - 2) + (3 - dump_argc); | |
1167 | trig_argv = calloc(trig_argc, sizeof(*trig_argv)); | |
1168 | if (!trig_argv) | |
1169 | return -ENOMEM; | |
a5fe4ef2 | 1170 | trig_argv[0] = argv[0]; |
559a1713 JB |
1171 | trig_argv[1] = "scan"; |
1172 | trig_argv[2] = "trigger"; | |
1173 | int i; | |
1174 | for (i = 0; i < argc - 2 - (dump_argc - 3); i++) | |
1175 | trig_argv[i + 3] = argv[i + 2 + (dump_argc - 3)]; | |
1176 | err = handle_cmd(state, II_NETDEV, trig_argc, trig_argv); | |
1177 | free(trig_argv); | |
a5fe4ef2 JB |
1178 | if (err) |
1179 | return err; | |
1180 | ||
61725dbe JB |
1181 | /* |
1182 | * WARNING: DO NOT COPY THIS CODE INTO YOUR APPLICATION | |
1183 | * | |
1184 | * This code has a bug, which requires creating a separate | |
1185 | * nl80211 socket to fix: | |
1186 | * It is possible for a NL80211_CMD_NEW_SCAN_RESULTS or | |
1187 | * NL80211_CMD_SCAN_ABORTED message to be sent by the kernel | |
1188 | * before (!) we listen to it, because we only start listening | |
1189 | * after we send our scan request. | |
1190 | * | |
1191 | * Doing it the other way around has a race condition as well, | |
1192 | * if you first open the events socket you may get a notification | |
1193 | * for a previous scan. | |
1194 | * | |
1195 | * The only proper way to fix this would be to listen to events | |
1196 | * before sending the command, and for the kernel to send the | |
1197 | * scan request along with the event, so that you can match up | |
1198 | * whether the scan you requested was finished or aborted (this | |
1199 | * may result in processing a scan that another application | |
1200 | * requested, but that doesn't seem to be a problem). | |
1201 | * | |
1202 | * Alas, the kernel doesn't do that (yet). | |
1203 | */ | |
1204 | ||
a5fe4ef2 JB |
1205 | if (listen_events(state, ARRAY_SIZE(cmds), cmds) == |
1206 | NL80211_CMD_SCAN_ABORTED) { | |
1207 | printf("scan aborted!\n"); | |
1208 | return 0; | |
1209 | } | |
1210 | ||
1211 | dump_argv[0] = argv[0]; | |
92649eab | 1212 | return handle_cmd(state, II_NETDEV, dump_argc, dump_argv); |
a5fe4ef2 | 1213 | } |
64797a7f | 1214 | TOPLEVEL(scan, "[-u] [freq <freq>*] [ies <hex as 00:11:..>] [ssid <ssid>*|passive]", 0, 0, |
6ca98d28 JB |
1215 | CIB_NETDEV, handle_scan_combined, |
1216 | "Scan on the given frequencies and probe for the given SSIDs\n" | |
1217 | "(or wildcard if not given) unless passive scanning is requested.\n" | |
64797a7f JB |
1218 | "If -u is specified print unknown data in the scan results.\n" |
1219 | "Specified (vendor) IEs must be well-formed."); | |
4698bfc2 JB |
1220 | COMMAND(scan, dump, "[-u]", |
1221 | NL80211_CMD_GET_SCAN, NLM_F_DUMP, CIB_NETDEV, handle_scan_dump, | |
1222 | "Dump the current scan results. If -u is specified, print unknown\n" | |
1223 | "data in scan results."); | |
64797a7f | 1224 | COMMAND(scan, trigger, "[freq <freq>*] [ies <hex as 00:11:..>] [ssid <ssid>*|passive]", |
4698bfc2 JB |
1225 | NL80211_CMD_TRIGGER_SCAN, 0, CIB_NETDEV, handle_scan, |
1226 | "Trigger a scan on the given frequencies with probing for the given\n" | |
1227 | "SSIDs (or wildcard if not given) unless passive scanning is requested."); |