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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; | |
35 | }; | |
36 | ||
7c37a24d JB |
37 | static int handle_scan(struct nl80211_state *state, |
38 | struct nl_cb *cb, | |
3563f4c5 JB |
39 | struct nl_msg *msg, |
40 | int argc, char **argv) | |
41 | { | |
559a1713 JB |
42 | struct nl_msg *ssids = NULL, *freqs = NULL; |
43 | char *eptr; | |
3563f4c5 | 44 | int err = -ENOBUFS; |
559a1713 JB |
45 | int i; |
46 | enum { | |
47 | NONE, | |
48 | FREQ, | |
49 | SSID, | |
50 | DONE, | |
51 | } parse = NONE; | |
52 | int freq; | |
53 | bool passive = false, have_ssids = false, have_freqs = false; | |
3563f4c5 JB |
54 | |
55 | ssids = nlmsg_alloc(); | |
56 | if (!ssids) | |
57 | return -ENOMEM; | |
559a1713 JB |
58 | |
59 | freqs = nlmsg_alloc(); | |
60 | if (!freqs) { | |
61 | nlmsg_free(ssids); | |
62 | return -ENOMEM; | |
63 | } | |
64 | ||
65 | for (i = 0; i < argc; i++) { | |
1ddf11eb | 66 | if (parse == NONE && strcmp(argv[i], "freq") == 0) { |
559a1713 JB |
67 | parse = FREQ; |
68 | have_freqs = true; | |
69 | continue; | |
1ddf11eb | 70 | } else if (parse < SSID && strcmp(argv[i], "ssid") == 0) { |
559a1713 JB |
71 | parse = SSID; |
72 | have_ssids = true; | |
73 | continue; | |
1ddf11eb | 74 | } else if (parse < SSID && strcmp(argv[i], "passive") == 0) { |
559a1713 JB |
75 | parse = DONE; |
76 | passive = true; | |
77 | continue; | |
78 | } | |
79 | ||
80 | switch (parse) { | |
81 | case NONE: | |
82 | case DONE: | |
83 | return 1; | |
84 | case FREQ: | |
85 | freq = strtoul(argv[i], &eptr, 10); | |
86 | if (eptr != argv[i] + strlen(argv[i])) | |
87 | return 1; | |
88 | NLA_PUT_U32(freqs, i, freq); | |
89 | break; | |
90 | case SSID: | |
91 | NLA_PUT(ssids, i, strlen(argv[i]), argv[i]); | |
92 | break; | |
93 | } | |
94 | } | |
95 | ||
96 | if (!have_ssids) | |
97 | NLA_PUT(ssids, 1, 0, ""); | |
98 | if (!passive) | |
99 | nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids); | |
100 | ||
101 | if (have_freqs) | |
102 | nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs); | |
3563f4c5 JB |
103 | |
104 | err = 0; | |
105 | nla_put_failure: | |
106 | nlmsg_free(ssids); | |
559a1713 | 107 | nlmsg_free(freqs); |
3563f4c5 JB |
108 | return err; |
109 | } | |
559a1713 | 110 | COMMAND(scan, trigger, "[freq <freq>*] [ssid <ssid>*|passive]", |
6ca98d28 JB |
111 | NL80211_CMD_TRIGGER_SCAN, 0, CIB_NETDEV, handle_scan, |
112 | "Trigger a scan on the given frequencies with probing for the given\n" | |
113 | "SSIDs (or wildcard if not given) unless passive scanning is requested."); | |
3563f4c5 | 114 | |
857d966e MH |
115 | static void tab_on_first(bool *first) |
116 | { | |
117 | if (!*first) | |
118 | printf("\t"); | |
119 | else | |
120 | *first = false; | |
121 | } | |
122 | ||
83b4934c | 123 | static void print_ssid(const uint8_t type, uint8_t len, const uint8_t *data) |
3563f4c5 | 124 | { |
83b4934c | 125 | printf(" "); |
748f8489 | 126 | print_ssid_escaped(len, data); |
3563f4c5 JB |
127 | printf("\n"); |
128 | } | |
129 | ||
83b4934c | 130 | static void print_supprates(const uint8_t type, uint8_t len, const uint8_t *data) |
3563f4c5 JB |
131 | { |
132 | int i; | |
133 | ||
83b4934c | 134 | printf(" "); |
3563f4c5 | 135 | |
83b4934c | 136 | for (i = 0; i < len; i++) { |
3563f4c5 JB |
137 | int r = data[i] & 0x7f; |
138 | printf("%d.%d%s ", r/2, 5*(r&1), data[i] & 0x80 ? "*":""); | |
139 | } | |
140 | printf("\n"); | |
141 | } | |
142 | ||
83b4934c | 143 | static void print_ds(const uint8_t type, uint8_t len, const uint8_t *data) |
3563f4c5 | 144 | { |
83b4934c | 145 | printf(" channel %d\n", data[0]); |
3563f4c5 JB |
146 | } |
147 | ||
83b4934c | 148 | static void print_country(const uint8_t type, uint8_t len, const uint8_t *data) |
b7e8fa37 MH |
149 | { |
150 | int i; | |
151 | ||
83b4934c | 152 | printf(" %.*s", 2, data); |
b7e8fa37 MH |
153 | switch (data[2]) { |
154 | case 'I': | |
155 | printf(" (indoor)"); | |
156 | break; | |
157 | case 'O': | |
158 | printf(" (outdoor)"); | |
159 | break; | |
b6c0d634 JB |
160 | case ' ': |
161 | printf(" (in/outdoor)"); | |
162 | break; | |
163 | default: | |
164 | printf(" (invalid environment)"); | |
165 | break; | |
b7e8fa37 MH |
166 | } |
167 | printf(", data:"); | |
168 | for(i=0; i<len-3; i++) | |
169 | printf(" %.02x", data[i + 3]); | |
170 | printf("\n"); | |
171 | } | |
172 | ||
d1563a1b MH |
173 | static void print_powerconstraint(const uint8_t type, uint8_t len, const uint8_t *data) |
174 | { | |
175 | printf(" %d dB\n", data[0]); | |
176 | } | |
177 | ||
83b4934c | 178 | static void print_erp(const uint8_t type, uint8_t len, const uint8_t *data) |
fc4d1484 MH |
179 | { |
180 | if (data[0] == 0x00) | |
83b4934c | 181 | printf(" <no flags>"); |
fc4d1484 MH |
182 | if (data[0] & 0x01) |
183 | printf(" NonERP_Present"); | |
184 | if (data[0] & 0x02) | |
185 | printf(" Use_Protection"); | |
186 | if (data[0] & 0x04) | |
187 | printf(" Barker_Preamble_Mode"); | |
188 | printf("\n"); | |
189 | } | |
190 | ||
83b4934c | 191 | static void print_cipher(const uint8_t *data) |
857d966e MH |
192 | { |
193 | if (memcmp(data, wifi_oui, 3) == 0) { | |
194 | switch (data[3]) { | |
510e0e2f | 195 | case 0: |
857d966e MH |
196 | printf("Use group cipher suite"); |
197 | break; | |
510e0e2f | 198 | case 1: |
857d966e MH |
199 | printf("WEP-40"); |
200 | break; | |
510e0e2f | 201 | case 2: |
857d966e MH |
202 | printf("TKIP"); |
203 | break; | |
510e0e2f | 204 | case 4: |
857d966e MH |
205 | printf("CCMP"); |
206 | break; | |
510e0e2f | 207 | case 5: |
857d966e MH |
208 | printf("WEP-104"); |
209 | break; | |
210 | default: | |
332769c6 | 211 | printf("%.02x-%.02x-%.02x:%d", |
5594fd23 | 212 | data[0], data[1] ,data[2], data[3]); |
857d966e MH |
213 | break; |
214 | } | |
215 | } else if (memcmp(data, ieee80211_oui, 3) == 0) { | |
216 | switch (data[3]) { | |
510e0e2f | 217 | case 0: |
857d966e MH |
218 | printf("Use group cipher suite"); |
219 | break; | |
510e0e2f | 220 | case 1: |
857d966e MH |
221 | printf("WEP-40"); |
222 | break; | |
510e0e2f | 223 | case 2: |
857d966e MH |
224 | printf("TKIP"); |
225 | break; | |
510e0e2f | 226 | case 4: |
857d966e MH |
227 | printf("CCMP"); |
228 | break; | |
510e0e2f | 229 | case 5: |
857d966e MH |
230 | printf("WEP-104"); |
231 | break; | |
510e0e2f | 232 | case 6: |
857d966e MH |
233 | printf("AES-128-CMAC"); |
234 | break; | |
235 | default: | |
332769c6 | 236 | printf("%.02x-%.02x-%.02x:%d", |
5594fd23 | 237 | data[0], data[1] ,data[2], data[3]); |
857d966e MH |
238 | break; |
239 | } | |
240 | } else | |
332769c6 | 241 | printf("%.02x-%.02x-%.02x:%d", |
5594fd23 | 242 | data[0], data[1] ,data[2], data[3]); |
857d966e MH |
243 | } |
244 | ||
83b4934c | 245 | static void print_auth(const uint8_t *data) |
857d966e MH |
246 | { |
247 | if (memcmp(data, wifi_oui, 3) == 0) { | |
248 | switch (data[3]) { | |
510e0e2f | 249 | case 1: |
857d966e MH |
250 | printf("IEEE 802.1X"); |
251 | break; | |
510e0e2f | 252 | case 2: |
857d966e MH |
253 | printf("PSK"); |
254 | break; | |
255 | default: | |
332769c6 | 256 | printf("%.02x-%.02x-%.02x:%d", |
5594fd23 | 257 | data[0], data[1] ,data[2], data[3]); |
857d966e MH |
258 | break; |
259 | } | |
260 | } else if (memcmp(data, ieee80211_oui, 3) == 0) { | |
261 | switch (data[3]) { | |
510e0e2f | 262 | case 1: |
857d966e MH |
263 | printf("IEEE 802.1X"); |
264 | break; | |
510e0e2f | 265 | case 2: |
857d966e MH |
266 | printf("PSK"); |
267 | break; | |
0fe1c415 JB |
268 | case 3: |
269 | printf("FT/IEEE 802.1X"); | |
270 | break; | |
271 | case 4: | |
272 | printf("FT/PSK"); | |
273 | break; | |
274 | case 5: | |
275 | printf("IEEE 802.1X/SHA-256"); | |
276 | break; | |
277 | case 6: | |
278 | printf("PSK/SHA-256"); | |
279 | break; | |
857d966e | 280 | default: |
332769c6 | 281 | printf("%.02x-%.02x-%.02x:%d", |
5594fd23 | 282 | data[0], data[1] ,data[2], data[3]); |
857d966e MH |
283 | break; |
284 | } | |
285 | } else | |
332769c6 | 286 | printf("%.02x-%.02x-%.02x:%d", |
5594fd23 | 287 | data[0], data[1] ,data[2], data[3]); |
857d966e MH |
288 | } |
289 | ||
83b4934c JB |
290 | static void print_rsn_ie(const char *defcipher, const char *defauth, |
291 | uint8_t len, const uint8_t *data) | |
857d966e MH |
292 | { |
293 | bool first = true; | |
294 | __u16 version, count, capa; | |
295 | int i; | |
296 | ||
857d966e MH |
297 | version = data[0] + (data[1] << 8); |
298 | tab_on_first(&first); | |
299 | printf("\t * Version: %d\n", version); | |
300 | ||
301 | data += 2; | |
302 | len -= 2; | |
303 | ||
304 | if (len < 4) { | |
305 | tab_on_first(&first); | |
306 | printf("\t * Group cipher: %s\n", defcipher); | |
307 | printf("\t * Pairwise ciphers: %s\n", defcipher); | |
308 | return; | |
309 | } | |
310 | ||
311 | tab_on_first(&first); | |
312 | printf("\t * Group cipher: "); | |
313 | print_cipher(data); | |
314 | printf("\n"); | |
315 | ||
316 | data += 4; | |
317 | len -= 4; | |
318 | ||
319 | if (len < 2) { | |
320 | tab_on_first(&first); | |
321 | printf("\t * Pairwise ciphers: %s\n", defcipher); | |
322 | return; | |
323 | } | |
324 | ||
325 | count = data[0] | (data[1] << 8); | |
31d477fb MH |
326 | if (2 + (count * 4) > len) |
327 | goto invalid; | |
328 | ||
857d966e MH |
329 | tab_on_first(&first); |
330 | printf("\t * Pairwise ciphers:"); | |
31d477fb | 331 | for (i = 0; i < count; i++) { |
857d966e MH |
332 | printf(" "); |
333 | print_cipher(data + 2 + (i * 4)); | |
334 | } | |
335 | printf("\n"); | |
336 | ||
337 | data += 2 + (count * 4); | |
338 | len -= 2 + (count * 4); | |
339 | ||
340 | if (len < 2) { | |
341 | tab_on_first(&first); | |
342 | printf("\t * Authentication suites: %s\n", defauth); | |
343 | return; | |
344 | } | |
345 | ||
346 | count = data[0] | (data[1] << 8); | |
31d477fb MH |
347 | if (2 + (count * 4) > len) |
348 | goto invalid; | |
349 | ||
857d966e MH |
350 | tab_on_first(&first); |
351 | printf("\t * Authentication suites:"); | |
83b4934c | 352 | for (i = 0; i < count; i++) { |
857d966e MH |
353 | printf(" "); |
354 | print_auth(data + 2 + (i * 4)); | |
355 | } | |
356 | printf("\n"); | |
357 | ||
358 | data += 2 + (count * 4); | |
359 | len -= 2 + (count * 4); | |
360 | ||
6a4f24e8 JB |
361 | if (len >= 2) { |
362 | capa = data[0] | (data[1] << 8); | |
363 | tab_on_first(&first); | |
cadbe89a JB |
364 | printf("\t * Capabilities:"); |
365 | if (capa & 0x0001) | |
366 | printf(" PreAuth"); | |
367 | if (capa & 0x0002) | |
368 | printf(" NoPairwise"); | |
369 | switch ((capa & 0x000c) >> 2) { | |
370 | case 0: | |
371 | break; | |
372 | case 1: | |
373 | printf(" 2-PTKSA-RC"); | |
374 | break; | |
375 | case 2: | |
376 | printf(" 4-PTKSA-RC"); | |
377 | break; | |
378 | case 3: | |
379 | printf(" 16-PTKSA-RC"); | |
380 | break; | |
381 | } | |
382 | switch ((capa & 0x0030) >> 4) { | |
383 | case 0: | |
384 | break; | |
385 | case 1: | |
386 | printf(" 2-GTKSA-RC"); | |
387 | break; | |
388 | case 2: | |
389 | printf(" 4-GTKSA-RC"); | |
390 | break; | |
391 | case 3: | |
392 | printf(" 16-GTKSA-RC"); | |
393 | break; | |
394 | } | |
395 | if (capa & 0x0040) | |
396 | printf(" MFP-required"); | |
397 | if (capa & 0x0080) | |
398 | printf(" MFP-capable"); | |
399 | if (capa & 0x0200) | |
400 | printf(" Peerkey-enabled"); | |
401 | if (capa & 0x0400) | |
402 | printf(" SPP-AMSDU-capable"); | |
403 | if (capa & 0x0800) | |
404 | printf(" SPP-AMSDU-required"); | |
405 | printf(" (0x%.4x)\n", capa); | |
6a4f24e8 JB |
406 | data += 2; |
407 | len -= 2; | |
408 | } | |
31d477fb | 409 | |
cadbe89a | 410 | invalid: |
31d477fb MH |
411 | if (len != 0) { |
412 | printf("\t\t * bogus tail data (%d):", len); | |
413 | while (len) { | |
414 | printf(" %.2x", *data); | |
415 | data++; | |
416 | len--; | |
417 | } | |
418 | printf("\n"); | |
419 | } | |
857d966e MH |
420 | } |
421 | ||
83b4934c | 422 | static void print_rsn(const uint8_t type, uint8_t len, const uint8_t *data) |
857d966e | 423 | { |
83b4934c | 424 | print_rsn_ie("CCMP", "IEEE 802.1X", len, data); |
857d966e MH |
425 | } |
426 | ||
83b4934c | 427 | static void print_capabilities(const uint8_t type, uint8_t len, const uint8_t *data) |
9b880b00 | 428 | { |
31d2d259 JB |
429 | int i, base, bit; |
430 | bool first = true; | |
431 | ||
432 | ||
433 | for (i = 0; i < len; i++) { | |
434 | base = i * 8; | |
435 | ||
436 | for (bit = 0; bit < 8; bit++) { | |
437 | if (!(data[i] & (1 << bit))) | |
438 | continue; | |
439 | ||
440 | if (!first) | |
441 | printf(","); | |
442 | else | |
443 | first = false; | |
444 | ||
445 | switch (bit + base) { | |
446 | case 0: | |
447 | printf(" HT Information Exchange Supported"); | |
448 | break; | |
449 | case 1: | |
450 | printf(" On-demand Beacon"); | |
451 | break; | |
452 | case 2: | |
453 | printf(" Extended Channel Switching"); | |
454 | break; | |
455 | case 3: | |
456 | printf(" Wave Indication"); | |
457 | break; | |
458 | case 4: | |
459 | printf(" PSMP Capability"); | |
460 | break; | |
461 | case 5: | |
462 | printf(" Service Interval Granularity"); | |
463 | break; | |
464 | case 6: | |
465 | printf(" S-PSMP Capability"); | |
466 | break; | |
467 | default: | |
468 | printf(" %d", bit); | |
469 | break; | |
470 | } | |
471 | } | |
472 | } | |
9b880b00 | 473 | |
9b880b00 MH |
474 | printf("\n"); |
475 | } | |
476 | ||
83b4934c JB |
477 | struct ie_print { |
478 | const char *name; | |
479 | void (*print)(const uint8_t type, uint8_t len, const uint8_t *data); | |
480 | uint8_t minlen, maxlen; | |
764fe753 JB |
481 | }; |
482 | ||
83b4934c JB |
483 | static void print_ie(const struct ie_print *p, const uint8_t type, |
484 | uint8_t len, const uint8_t *data) | |
4673a894 | 485 | { |
83b4934c JB |
486 | int i; |
487 | ||
488 | if (!p->print) | |
489 | return; | |
490 | ||
491 | printf("\t%s:", p->name); | |
492 | if (len < p->minlen || len > p->maxlen) { | |
493 | if (len > 1) { | |
494 | printf(" <invalid: %d bytes:", len); | |
495 | for (i = 0; i < len; i++) | |
496 | printf(" %.02x", data[i]); | |
497 | printf(">\n"); | |
498 | } else if (len) | |
499 | printf(" <invalid: 1 byte: %.02x>\n", data[0]); | |
500 | else | |
501 | printf(" <invalid: no data>\n"); | |
502 | return; | |
503 | } | |
504 | ||
505 | p->print(type, len, data); | |
506 | } | |
507 | ||
508 | #define PRINT_IGN { \ | |
509 | .name = "IGNORE", \ | |
510 | .print = NULL, \ | |
511 | .minlen = 0, \ | |
512 | .maxlen = 255, \ | |
4673a894 JB |
513 | } |
514 | ||
83b4934c JB |
515 | static const struct ie_print ieprinters[] = { |
516 | [0] = { "SSID", print_ssid, 0, 32, }, | |
517 | [1] = { "Supported rates", print_supprates, 0, 255, }, | |
518 | [3] = { "DS Paramater set", print_ds, 1, 1, }, | |
519 | [5] = PRINT_IGN, | |
520 | [7] = { "Country", print_country, 3, 255, }, | |
d1563a1b | 521 | [32] = { "Power constraint", print_powerconstraint, 1, 1, }, |
83b4934c JB |
522 | [42] = { "ERP", print_erp, 1, 255, }, |
523 | [48] = { "RSN", print_rsn, 2, 255, }, | |
524 | [50] = { "Extended supported rates", print_supprates, 0, 255, }, | |
525 | [127] = { "Extended capabilities", print_capabilities, 0, 255, }, | |
526 | }; | |
527 | ||
528 | static void print_wifi_wpa(const uint8_t type, uint8_t len, const uint8_t *data) | |
529 | { | |
530 | print_rsn_ie("TKIP", "IEEE 802.1X", len, data); | |
531 | } | |
532 | ||
533 | static void print_wifi_wmm(const uint8_t type, uint8_t len, const uint8_t *data) | |
6ff0c93a MH |
534 | { |
535 | int i; | |
536 | ||
6ff0c93a MH |
537 | switch (data[0]) { |
538 | case 0x00: | |
83b4934c | 539 | printf(" information:"); |
6ff0c93a MH |
540 | break; |
541 | case 0x01: | |
83b4934c | 542 | printf(" parameter:"); |
6ff0c93a MH |
543 | break; |
544 | default: | |
83b4934c | 545 | printf(" type %d:", data[0]); |
6ff0c93a MH |
546 | break; |
547 | } | |
548 | ||
83b4934c | 549 | for(i = 0; i < len - 1; i++) |
6ff0c93a MH |
550 | printf(" %.02x", data[i + 1]); |
551 | printf("\n"); | |
552 | } | |
553 | ||
83b4934c | 554 | static void print_wifi_wps(const uint8_t type, uint8_t len, const uint8_t *data) |
4673a894 JB |
555 | { |
556 | bool first = true; | |
557 | __u16 subtype, sublen; | |
558 | ||
4673a894 JB |
559 | while (len >= 4) { |
560 | subtype = (data[0] << 8) + data[1]; | |
561 | sublen = (data[2] << 8) + data[3]; | |
562 | if (sublen > len) | |
563 | break; | |
564 | ||
565 | switch (subtype) { | |
566 | case 0x104a: | |
567 | tab_on_first(&first); | |
dffc6750 | 568 | printf("\t * Version: %d.%d\n", data[4] >> 4, data[4] & 0xF); |
4673a894 JB |
569 | break; |
570 | case 0x1011: | |
571 | tab_on_first(&first); | |
572 | printf("\t * Device name: %.*s\n", sublen, data + 4); | |
573 | break; | |
574 | case 0x1021: | |
575 | tab_on_first(&first); | |
576 | printf("\t * Manufacturer: %.*s\n", sublen, data + 4); | |
577 | break; | |
578 | case 0x1023: | |
579 | tab_on_first(&first); | |
580 | printf("\t * Model: %.*s\n", sublen, data + 4); | |
581 | break; | |
7ee5a865 JB |
582 | case 0x1057: { |
583 | __u16 val = (data[4] << 8) | data[5]; | |
584 | tab_on_first(&first); | |
585 | printf("\t * AP setup locked: 0x%.4x\n", val); | |
586 | break; | |
587 | } | |
4673a894 JB |
588 | case 0x1008: { |
589 | __u16 meth = (data[4] << 8) + data[5]; | |
590 | bool comma = false; | |
591 | tab_on_first(&first); | |
592 | printf("\t * Config methods:"); | |
593 | #define T(bit, name) do { \ | |
594 | if (meth & (1<<bit)) { \ | |
595 | if (comma) \ | |
596 | printf(","); \ | |
597 | comma = true; \ | |
598 | printf(" " name); \ | |
599 | } } while (0) | |
600 | T(0, "USB"); | |
601 | T(1, "Ethernet"); | |
602 | T(2, "Label"); | |
603 | T(3, "Display"); | |
604 | T(4, "Ext. NFC"); | |
605 | T(5, "Int. NFC"); | |
606 | T(6, "NFC Intf."); | |
607 | T(7, "PBC"); | |
608 | T(8, "Keypad"); | |
609 | printf("\n"); | |
610 | break; | |
611 | #undef T | |
612 | } | |
613 | default: | |
614 | break; | |
615 | } | |
616 | ||
617 | data += sublen + 4; | |
618 | len -= sublen + 4; | |
619 | } | |
620 | ||
621 | if (len != 0) { | |
622 | printf("\t\t * bogus tail data (%d):", len); | |
623 | while (len) { | |
624 | printf(" %.2x", *data); | |
625 | data++; | |
626 | len--; | |
627 | } | |
628 | printf("\n"); | |
629 | } | |
630 | } | |
631 | ||
83b4934c JB |
632 | static const struct ie_print wifiprinters[] = { |
633 | [1] = { "WPA", print_wifi_wpa, 2, 255, }, | |
634 | [2] = { "WMM", print_wifi_wmm, 1, 255, }, | |
635 | [4] = { "WPS", print_wifi_wps, 0, 255, }, | |
4673a894 JB |
636 | }; |
637 | ||
764fe753 JB |
638 | static void print_vendor(unsigned char len, unsigned char *data, |
639 | struct scan_params *params) | |
3563f4c5 JB |
640 | { |
641 | int i; | |
642 | ||
fbf80af5 | 643 | if (len < 3) { |
4673a894 | 644 | printf("\tVendor specific: <too short> data:"); |
fbf80af5 JB |
645 | for(i = 0; i < len; i++) |
646 | printf(" %.02x", data[i]); | |
647 | printf("\n"); | |
648 | return; | |
649 | } | |
650 | ||
857d966e | 651 | if (len >= 4 && memcmp(data, wifi_oui, 3) == 0) { |
83b4934c JB |
652 | if (data[3] < ARRAY_SIZE(wifiprinters) && wifiprinters[data[3]].name) { |
653 | print_ie(&wifiprinters[data[3]], data[3], len - 4, data + 4); | |
654 | return; | |
655 | } | |
4673a894 JB |
656 | if (!params->unknown) |
657 | return; | |
857d966e | 658 | printf("\tWiFi OUI %#.2x, data:", data[3]); |
4673a894 JB |
659 | for(i = 0; i < len - 4; i++) |
660 | printf(" %.02x", data[i + 4]); | |
661 | printf("\n"); | |
662 | return; | |
663 | } | |
664 | ||
764fe753 JB |
665 | if (!params->unknown) |
666 | return; | |
667 | ||
fbf80af5 | 668 | printf("\tVendor specific: OUI %.2x:%.2x:%.2x, data:", |
3563f4c5 | 669 | data[0], data[1], data[2]); |
fbf80af5 JB |
670 | for (i = 3; i < len; i++) |
671 | printf(" %.2x", data[i]); | |
3563f4c5 JB |
672 | printf("\n"); |
673 | } | |
674 | ||
764fe753 | 675 | static void print_ies(unsigned char *ie, int ielen, struct scan_params *params) |
3563f4c5 JB |
676 | { |
677 | while (ielen >= 2 && ielen >= ie[1]) { | |
83b4934c JB |
678 | if (ie[0] < ARRAY_SIZE(ieprinters) && ieprinters[ie[0]].name) { |
679 | print_ie(&ieprinters[ie[0]], ie[0], ie[1], ie + 2); | |
764fe753 JB |
680 | } else if (ie[0] == 221 /* vendor */) { |
681 | print_vendor(ie[1], ie + 2, params); | |
682 | } else if (params->unknown) { | |
3563f4c5 JB |
683 | int i; |
684 | ||
8086b700 | 685 | printf("\tUnknown IE (%d):", ie[0]); |
3563f4c5 | 686 | for (i=0; i<ie[1]; i++) |
8086b700 | 687 | printf(" %.2x", ie[2+i]); |
3563f4c5 JB |
688 | printf("\n"); |
689 | } | |
690 | ielen -= ie[1] + 2; | |
691 | ie += ie[1] + 2; | |
692 | } | |
693 | } | |
694 | ||
695 | static int print_bss_handler(struct nl_msg *msg, void *arg) | |
696 | { | |
697 | struct nlattr *tb[NL80211_ATTR_MAX + 1]; | |
698 | struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); | |
699 | struct nlattr *bss[NL80211_BSS_MAX + 1]; | |
700 | char mac_addr[20], dev[20]; | |
701 | static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = { | |
702 | [NL80211_BSS_TSF] = { .type = NLA_U64 }, | |
703 | [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 }, | |
704 | [NL80211_BSS_BSSID] = { }, | |
705 | [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 }, | |
706 | [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 }, | |
707 | [NL80211_BSS_INFORMATION_ELEMENTS] = { }, | |
f2e17e1f JB |
708 | [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 }, |
709 | [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 }, | |
3563f4c5 JB |
710 | }; |
711 | ||
712 | nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), | |
713 | genlmsg_attrlen(gnlh, 0), NULL); | |
714 | ||
715 | if (!tb[NL80211_ATTR_BSS]) { | |
716 | fprintf(stderr, "bss info missing!"); | |
717 | return NL_SKIP; | |
718 | } | |
719 | if (nla_parse_nested(bss, NL80211_BSS_MAX, | |
720 | tb[NL80211_ATTR_BSS], | |
721 | bss_policy)) { | |
722 | fprintf(stderr, "failed to parse nested attributes!"); | |
723 | return NL_SKIP; | |
724 | } | |
725 | ||
726 | if (!bss[NL80211_BSS_BSSID]) | |
727 | return NL_SKIP; | |
728 | ||
729 | mac_addr_n2a(mac_addr, nla_data(bss[NL80211_BSS_BSSID])); | |
730 | if_indextoname(nla_get_u32(tb[NL80211_ATTR_IFINDEX]), dev); | |
731 | printf("BSS %s (on %s)\n", mac_addr, dev); | |
732 | ||
e7109a8a JB |
733 | if (bss[NL80211_BSS_TSF]) { |
734 | unsigned long long tsf; | |
735 | tsf = (unsigned long long)nla_get_u64(bss[NL80211_BSS_TSF]); | |
736 | printf("\tTSF: %llu usec (%llud, %.2lld:%.2llu:%.2llu)\n", | |
737 | tsf, tsf/1000/1000/60/60/24, (tsf/1000/1000/60/60) % 24, | |
738 | (tsf/1000/1000/60) % 60, (tsf/1000/1000) % 60); | |
739 | } | |
3563f4c5 JB |
740 | if (bss[NL80211_BSS_FREQUENCY]) |
741 | printf("\tfreq: %d\n", | |
742 | nla_get_u32(bss[NL80211_BSS_FREQUENCY])); | |
743 | if (bss[NL80211_BSS_BEACON_INTERVAL]) | |
744 | printf("\tbeacon interval: %d\n", | |
745 | nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL])); | |
92a04ecd MH |
746 | if (bss[NL80211_BSS_CAPABILITY]) { |
747 | __u16 capa = nla_get_u16(bss[NL80211_BSS_CAPABILITY]); | |
748 | printf("\tcapability:"); | |
749 | if (capa & WLAN_CAPABILITY_ESS) | |
750 | printf(" ESS"); | |
751 | if (capa & WLAN_CAPABILITY_IBSS) | |
752 | printf(" IBSS"); | |
753 | if (capa & WLAN_CAPABILITY_PRIVACY) | |
754 | printf(" Privacy"); | |
755 | if (capa & WLAN_CAPABILITY_SHORT_PREAMBLE) | |
756 | printf(" ShortPreamble"); | |
757 | if (capa & WLAN_CAPABILITY_PBCC) | |
758 | printf(" PBCC"); | |
759 | if (capa & WLAN_CAPABILITY_CHANNEL_AGILITY) | |
760 | printf(" ChannelAgility"); | |
761 | if (capa & WLAN_CAPABILITY_SPECTRUM_MGMT) | |
762 | printf(" SpectrumMgmt"); | |
763 | if (capa & WLAN_CAPABILITY_QOS) | |
764 | printf(" QoS"); | |
765 | if (capa & WLAN_CAPABILITY_SHORT_SLOT_TIME) | |
766 | printf(" ShortSlotTime"); | |
767 | if (capa & WLAN_CAPABILITY_APSD) | |
768 | printf(" APSD"); | |
769 | if (capa & WLAN_CAPABILITY_DSSS_OFDM) | |
770 | printf(" DSSS-OFDM"); | |
771 | printf(" (0x%.4x)\n", capa); | |
772 | } | |
f2e17e1f JB |
773 | if (bss[NL80211_BSS_SIGNAL_MBM]) { |
774 | int s = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]); | |
775 | printf("\tsignal: %d.%.2d dBm\n", s/100, s%100); | |
776 | } | |
777 | if (bss[NL80211_BSS_SIGNAL_UNSPEC]) { | |
778 | unsigned char s = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]); | |
779 | printf("\tsignal: %d/100\n", s); | |
780 | } | |
3563f4c5 JB |
781 | if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) |
782 | print_ies(nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]), | |
764fe753 JB |
783 | nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]), |
784 | arg); | |
3563f4c5 JB |
785 | |
786 | return NL_SKIP; | |
787 | } | |
788 | ||
764fe753 | 789 | static struct scan_params scan_params; |
3563f4c5 | 790 | |
7c37a24d JB |
791 | static int handle_scan_dump(struct nl80211_state *state, |
792 | struct nl_cb *cb, | |
3563f4c5 JB |
793 | struct nl_msg *msg, |
794 | int argc, char **argv) | |
795 | { | |
764fe753 JB |
796 | if (argc > 1) |
797 | return 1; | |
798 | ||
799 | scan_params.unknown = false; | |
800 | if (argc == 1 && !strcmp(argv[0], "-u")) | |
801 | scan_params.unknown = true; | |
802 | ||
803 | nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, print_bss_handler, | |
804 | &scan_params); | |
3563f4c5 JB |
805 | return 0; |
806 | } | |
764fe753 | 807 | COMMAND(scan, dump, "[-u]", |
6ca98d28 JB |
808 | NL80211_CMD_GET_SCAN, NLM_F_DUMP, CIB_NETDEV, handle_scan_dump, |
809 | "Dump the current scan results. If -u is specified, print unknown\n" | |
810 | "data in scan results."); | |
a5fe4ef2 JB |
811 | |
812 | static int handle_scan_combined(struct nl80211_state *state, | |
813 | struct nl_cb *cb, | |
814 | struct nl_msg *msg, | |
815 | int argc, char **argv) | |
816 | { | |
559a1713 | 817 | char **trig_argv; |
a5fe4ef2 JB |
818 | static char *dump_argv[] = { |
819 | NULL, | |
820 | "scan", | |
821 | "dump", | |
92649eab | 822 | NULL, |
a5fe4ef2 JB |
823 | }; |
824 | static const __u32 cmds[] = { | |
825 | NL80211_CMD_NEW_SCAN_RESULTS, | |
826 | NL80211_CMD_SCAN_ABORTED, | |
827 | }; | |
559a1713 | 828 | int trig_argc, dump_argc, err; |
a5fe4ef2 | 829 | |
559a1713 JB |
830 | if (argc >= 3 && !strcmp(argv[2], "-u")) { |
831 | dump_argc = 4; | |
832 | dump_argv[3] = "-u"; | |
833 | } else | |
834 | dump_argc = 3; | |
835 | ||
836 | trig_argc = 3 + (argc - 2) + (3 - dump_argc); | |
837 | trig_argv = calloc(trig_argc, sizeof(*trig_argv)); | |
838 | if (!trig_argv) | |
839 | return -ENOMEM; | |
a5fe4ef2 | 840 | trig_argv[0] = argv[0]; |
559a1713 JB |
841 | trig_argv[1] = "scan"; |
842 | trig_argv[2] = "trigger"; | |
843 | int i; | |
844 | for (i = 0; i < argc - 2 - (dump_argc - 3); i++) | |
845 | trig_argv[i + 3] = argv[i + 2 + (dump_argc - 3)]; | |
846 | err = handle_cmd(state, II_NETDEV, trig_argc, trig_argv); | |
847 | free(trig_argv); | |
a5fe4ef2 JB |
848 | if (err) |
849 | return err; | |
850 | ||
61725dbe JB |
851 | /* |
852 | * WARNING: DO NOT COPY THIS CODE INTO YOUR APPLICATION | |
853 | * | |
854 | * This code has a bug, which requires creating a separate | |
855 | * nl80211 socket to fix: | |
856 | * It is possible for a NL80211_CMD_NEW_SCAN_RESULTS or | |
857 | * NL80211_CMD_SCAN_ABORTED message to be sent by the kernel | |
858 | * before (!) we listen to it, because we only start listening | |
859 | * after we send our scan request. | |
860 | * | |
861 | * Doing it the other way around has a race condition as well, | |
862 | * if you first open the events socket you may get a notification | |
863 | * for a previous scan. | |
864 | * | |
865 | * The only proper way to fix this would be to listen to events | |
866 | * before sending the command, and for the kernel to send the | |
867 | * scan request along with the event, so that you can match up | |
868 | * whether the scan you requested was finished or aborted (this | |
869 | * may result in processing a scan that another application | |
870 | * requested, but that doesn't seem to be a problem). | |
871 | * | |
872 | * Alas, the kernel doesn't do that (yet). | |
873 | */ | |
874 | ||
a5fe4ef2 JB |
875 | if (listen_events(state, ARRAY_SIZE(cmds), cmds) == |
876 | NL80211_CMD_SCAN_ABORTED) { | |
877 | printf("scan aborted!\n"); | |
878 | return 0; | |
879 | } | |
880 | ||
881 | dump_argv[0] = argv[0]; | |
92649eab | 882 | return handle_cmd(state, II_NETDEV, dump_argc, dump_argv); |
a5fe4ef2 | 883 | } |
6ca98d28 JB |
884 | TOPLEVEL(scan, "[-u] [freq <freq>*] [ssid <ssid>*|passive]", 0, 0, |
885 | CIB_NETDEV, handle_scan_combined, | |
886 | "Scan on the given frequencies and probe for the given SSIDs\n" | |
887 | "(or wildcard if not given) unless passive scanning is requested.\n" | |
888 | "If -u is specified print unknown data in the scan results."); |