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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 JB |
124 | { |
125 | int i; | |
83b4934c JB |
126 | |
127 | printf(" "); | |
128 | ||
129 | for (i = 0; i < len; i++) { | |
3563f4c5 JB |
130 | if (isprint(data[i])) |
131 | printf("%c", data[i]); | |
132 | else | |
133 | printf("\\x%.2x", data[i]); | |
134 | } | |
135 | printf("\n"); | |
136 | } | |
137 | ||
83b4934c | 138 | static void print_supprates(const uint8_t type, uint8_t len, const uint8_t *data) |
3563f4c5 JB |
139 | { |
140 | int i; | |
141 | ||
83b4934c | 142 | printf(" "); |
3563f4c5 | 143 | |
83b4934c | 144 | for (i = 0; i < len; i++) { |
3563f4c5 JB |
145 | int r = data[i] & 0x7f; |
146 | printf("%d.%d%s ", r/2, 5*(r&1), data[i] & 0x80 ? "*":""); | |
147 | } | |
148 | printf("\n"); | |
149 | } | |
150 | ||
83b4934c | 151 | static void print_ds(const uint8_t type, uint8_t len, const uint8_t *data) |
3563f4c5 | 152 | { |
83b4934c | 153 | printf(" channel %d\n", data[0]); |
3563f4c5 JB |
154 | } |
155 | ||
83b4934c | 156 | static void print_country(const uint8_t type, uint8_t len, const uint8_t *data) |
b7e8fa37 MH |
157 | { |
158 | int i; | |
159 | ||
83b4934c | 160 | printf(" %.*s", 2, data); |
b7e8fa37 MH |
161 | switch (data[2]) { |
162 | case 'I': | |
163 | printf(" (indoor)"); | |
164 | break; | |
165 | case 'O': | |
166 | printf(" (outdoor)"); | |
167 | break; | |
b6c0d634 JB |
168 | case ' ': |
169 | printf(" (in/outdoor)"); | |
170 | break; | |
171 | default: | |
172 | printf(" (invalid environment)"); | |
173 | break; | |
b7e8fa37 MH |
174 | } |
175 | printf(", data:"); | |
176 | for(i=0; i<len-3; i++) | |
177 | printf(" %.02x", data[i + 3]); | |
178 | printf("\n"); | |
179 | } | |
180 | ||
d1563a1b MH |
181 | static void print_powerconstraint(const uint8_t type, uint8_t len, const uint8_t *data) |
182 | { | |
183 | printf(" %d dB\n", data[0]); | |
184 | } | |
185 | ||
83b4934c | 186 | static void print_erp(const uint8_t type, uint8_t len, const uint8_t *data) |
fc4d1484 MH |
187 | { |
188 | if (data[0] == 0x00) | |
83b4934c | 189 | printf(" <no flags>"); |
fc4d1484 MH |
190 | if (data[0] & 0x01) |
191 | printf(" NonERP_Present"); | |
192 | if (data[0] & 0x02) | |
193 | printf(" Use_Protection"); | |
194 | if (data[0] & 0x04) | |
195 | printf(" Barker_Preamble_Mode"); | |
196 | printf("\n"); | |
197 | } | |
198 | ||
83b4934c | 199 | static void print_cipher(const uint8_t *data) |
857d966e MH |
200 | { |
201 | if (memcmp(data, wifi_oui, 3) == 0) { | |
202 | switch (data[3]) { | |
510e0e2f | 203 | case 0: |
857d966e MH |
204 | printf("Use group cipher suite"); |
205 | break; | |
510e0e2f | 206 | case 1: |
857d966e MH |
207 | printf("WEP-40"); |
208 | break; | |
510e0e2f | 209 | case 2: |
857d966e MH |
210 | printf("TKIP"); |
211 | break; | |
510e0e2f | 212 | case 4: |
857d966e MH |
213 | printf("CCMP"); |
214 | break; | |
510e0e2f | 215 | case 5: |
857d966e MH |
216 | printf("WEP-104"); |
217 | break; | |
218 | default: | |
332769c6 | 219 | printf("%.02x-%.02x-%.02x:%d", |
5594fd23 | 220 | data[0], data[1] ,data[2], data[3]); |
857d966e MH |
221 | break; |
222 | } | |
223 | } else if (memcmp(data, ieee80211_oui, 3) == 0) { | |
224 | switch (data[3]) { | |
510e0e2f | 225 | case 0: |
857d966e MH |
226 | printf("Use group cipher suite"); |
227 | break; | |
510e0e2f | 228 | case 1: |
857d966e MH |
229 | printf("WEP-40"); |
230 | break; | |
510e0e2f | 231 | case 2: |
857d966e MH |
232 | printf("TKIP"); |
233 | break; | |
510e0e2f | 234 | case 4: |
857d966e MH |
235 | printf("CCMP"); |
236 | break; | |
510e0e2f | 237 | case 5: |
857d966e MH |
238 | printf("WEP-104"); |
239 | break; | |
510e0e2f | 240 | case 6: |
857d966e MH |
241 | printf("AES-128-CMAC"); |
242 | break; | |
243 | default: | |
332769c6 | 244 | printf("%.02x-%.02x-%.02x:%d", |
5594fd23 | 245 | data[0], data[1] ,data[2], data[3]); |
857d966e MH |
246 | break; |
247 | } | |
248 | } else | |
332769c6 | 249 | printf("%.02x-%.02x-%.02x:%d", |
5594fd23 | 250 | data[0], data[1] ,data[2], data[3]); |
857d966e MH |
251 | } |
252 | ||
83b4934c | 253 | static void print_auth(const uint8_t *data) |
857d966e MH |
254 | { |
255 | if (memcmp(data, wifi_oui, 3) == 0) { | |
256 | switch (data[3]) { | |
510e0e2f | 257 | case 1: |
857d966e MH |
258 | printf("IEEE 802.1X"); |
259 | break; | |
510e0e2f | 260 | case 2: |
857d966e MH |
261 | printf("PSK"); |
262 | break; | |
263 | default: | |
332769c6 | 264 | printf("%.02x-%.02x-%.02x:%d", |
5594fd23 | 265 | data[0], data[1] ,data[2], data[3]); |
857d966e MH |
266 | break; |
267 | } | |
268 | } else if (memcmp(data, ieee80211_oui, 3) == 0) { | |
269 | switch (data[3]) { | |
510e0e2f | 270 | case 1: |
857d966e MH |
271 | printf("IEEE 802.1X"); |
272 | break; | |
510e0e2f | 273 | case 2: |
857d966e MH |
274 | printf("PSK"); |
275 | break; | |
0fe1c415 JB |
276 | case 3: |
277 | printf("FT/IEEE 802.1X"); | |
278 | break; | |
279 | case 4: | |
280 | printf("FT/PSK"); | |
281 | break; | |
282 | case 5: | |
283 | printf("IEEE 802.1X/SHA-256"); | |
284 | break; | |
285 | case 6: | |
286 | printf("PSK/SHA-256"); | |
287 | break; | |
857d966e | 288 | default: |
332769c6 | 289 | printf("%.02x-%.02x-%.02x:%d", |
5594fd23 | 290 | data[0], data[1] ,data[2], data[3]); |
857d966e MH |
291 | break; |
292 | } | |
293 | } else | |
332769c6 | 294 | printf("%.02x-%.02x-%.02x:%d", |
5594fd23 | 295 | data[0], data[1] ,data[2], data[3]); |
857d966e MH |
296 | } |
297 | ||
83b4934c JB |
298 | static void print_rsn_ie(const char *defcipher, const char *defauth, |
299 | uint8_t len, const uint8_t *data) | |
857d966e MH |
300 | { |
301 | bool first = true; | |
302 | __u16 version, count, capa; | |
303 | int i; | |
304 | ||
857d966e MH |
305 | version = data[0] + (data[1] << 8); |
306 | tab_on_first(&first); | |
307 | printf("\t * Version: %d\n", version); | |
308 | ||
309 | data += 2; | |
310 | len -= 2; | |
311 | ||
312 | if (len < 4) { | |
313 | tab_on_first(&first); | |
314 | printf("\t * Group cipher: %s\n", defcipher); | |
315 | printf("\t * Pairwise ciphers: %s\n", defcipher); | |
316 | return; | |
317 | } | |
318 | ||
319 | tab_on_first(&first); | |
320 | printf("\t * Group cipher: "); | |
321 | print_cipher(data); | |
322 | printf("\n"); | |
323 | ||
324 | data += 4; | |
325 | len -= 4; | |
326 | ||
327 | if (len < 2) { | |
328 | tab_on_first(&first); | |
329 | printf("\t * Pairwise ciphers: %s\n", defcipher); | |
330 | return; | |
331 | } | |
332 | ||
333 | count = data[0] | (data[1] << 8); | |
31d477fb MH |
334 | if (2 + (count * 4) > len) |
335 | goto invalid; | |
336 | ||
857d966e MH |
337 | tab_on_first(&first); |
338 | printf("\t * Pairwise ciphers:"); | |
31d477fb | 339 | for (i = 0; i < count; i++) { |
857d966e MH |
340 | printf(" "); |
341 | print_cipher(data + 2 + (i * 4)); | |
342 | } | |
343 | printf("\n"); | |
344 | ||
345 | data += 2 + (count * 4); | |
346 | len -= 2 + (count * 4); | |
347 | ||
348 | if (len < 2) { | |
349 | tab_on_first(&first); | |
350 | printf("\t * Authentication suites: %s\n", defauth); | |
351 | return; | |
352 | } | |
353 | ||
354 | count = data[0] | (data[1] << 8); | |
31d477fb MH |
355 | if (2 + (count * 4) > len) |
356 | goto invalid; | |
357 | ||
857d966e MH |
358 | tab_on_first(&first); |
359 | printf("\t * Authentication suites:"); | |
83b4934c | 360 | for (i = 0; i < count; i++) { |
857d966e MH |
361 | printf(" "); |
362 | print_auth(data + 2 + (i * 4)); | |
363 | } | |
364 | printf("\n"); | |
365 | ||
366 | data += 2 + (count * 4); | |
367 | len -= 2 + (count * 4); | |
368 | ||
6a4f24e8 JB |
369 | if (len >= 2) { |
370 | capa = data[0] | (data[1] << 8); | |
371 | tab_on_first(&first); | |
cadbe89a JB |
372 | printf("\t * Capabilities:"); |
373 | if (capa & 0x0001) | |
374 | printf(" PreAuth"); | |
375 | if (capa & 0x0002) | |
376 | printf(" NoPairwise"); | |
377 | switch ((capa & 0x000c) >> 2) { | |
378 | case 0: | |
379 | break; | |
380 | case 1: | |
381 | printf(" 2-PTKSA-RC"); | |
382 | break; | |
383 | case 2: | |
384 | printf(" 4-PTKSA-RC"); | |
385 | break; | |
386 | case 3: | |
387 | printf(" 16-PTKSA-RC"); | |
388 | break; | |
389 | } | |
390 | switch ((capa & 0x0030) >> 4) { | |
391 | case 0: | |
392 | break; | |
393 | case 1: | |
394 | printf(" 2-GTKSA-RC"); | |
395 | break; | |
396 | case 2: | |
397 | printf(" 4-GTKSA-RC"); | |
398 | break; | |
399 | case 3: | |
400 | printf(" 16-GTKSA-RC"); | |
401 | break; | |
402 | } | |
403 | if (capa & 0x0040) | |
404 | printf(" MFP-required"); | |
405 | if (capa & 0x0080) | |
406 | printf(" MFP-capable"); | |
407 | if (capa & 0x0200) | |
408 | printf(" Peerkey-enabled"); | |
409 | if (capa & 0x0400) | |
410 | printf(" SPP-AMSDU-capable"); | |
411 | if (capa & 0x0800) | |
412 | printf(" SPP-AMSDU-required"); | |
413 | printf(" (0x%.4x)\n", capa); | |
6a4f24e8 JB |
414 | data += 2; |
415 | len -= 2; | |
416 | } | |
31d477fb | 417 | |
cadbe89a | 418 | invalid: |
31d477fb MH |
419 | if (len != 0) { |
420 | printf("\t\t * bogus tail data (%d):", len); | |
421 | while (len) { | |
422 | printf(" %.2x", *data); | |
423 | data++; | |
424 | len--; | |
425 | } | |
426 | printf("\n"); | |
427 | } | |
857d966e MH |
428 | } |
429 | ||
83b4934c | 430 | static void print_rsn(const uint8_t type, uint8_t len, const uint8_t *data) |
857d966e | 431 | { |
83b4934c | 432 | print_rsn_ie("CCMP", "IEEE 802.1X", len, data); |
857d966e MH |
433 | } |
434 | ||
83b4934c | 435 | static void print_capabilities(const uint8_t type, uint8_t len, const uint8_t *data) |
9b880b00 | 436 | { |
31d2d259 JB |
437 | int i, base, bit; |
438 | bool first = true; | |
439 | ||
440 | ||
441 | for (i = 0; i < len; i++) { | |
442 | base = i * 8; | |
443 | ||
444 | for (bit = 0; bit < 8; bit++) { | |
445 | if (!(data[i] & (1 << bit))) | |
446 | continue; | |
447 | ||
448 | if (!first) | |
449 | printf(","); | |
450 | else | |
451 | first = false; | |
452 | ||
453 | switch (bit + base) { | |
454 | case 0: | |
455 | printf(" HT Information Exchange Supported"); | |
456 | break; | |
457 | case 1: | |
458 | printf(" On-demand Beacon"); | |
459 | break; | |
460 | case 2: | |
461 | printf(" Extended Channel Switching"); | |
462 | break; | |
463 | case 3: | |
464 | printf(" Wave Indication"); | |
465 | break; | |
466 | case 4: | |
467 | printf(" PSMP Capability"); | |
468 | break; | |
469 | case 5: | |
470 | printf(" Service Interval Granularity"); | |
471 | break; | |
472 | case 6: | |
473 | printf(" S-PSMP Capability"); | |
474 | break; | |
475 | default: | |
476 | printf(" %d", bit); | |
477 | break; | |
478 | } | |
479 | } | |
480 | } | |
9b880b00 | 481 | |
9b880b00 MH |
482 | printf("\n"); |
483 | } | |
484 | ||
83b4934c JB |
485 | struct ie_print { |
486 | const char *name; | |
487 | void (*print)(const uint8_t type, uint8_t len, const uint8_t *data); | |
488 | uint8_t minlen, maxlen; | |
764fe753 JB |
489 | }; |
490 | ||
83b4934c JB |
491 | static void print_ie(const struct ie_print *p, const uint8_t type, |
492 | uint8_t len, const uint8_t *data) | |
4673a894 | 493 | { |
83b4934c JB |
494 | int i; |
495 | ||
496 | if (!p->print) | |
497 | return; | |
498 | ||
499 | printf("\t%s:", p->name); | |
500 | if (len < p->minlen || len > p->maxlen) { | |
501 | if (len > 1) { | |
502 | printf(" <invalid: %d bytes:", len); | |
503 | for (i = 0; i < len; i++) | |
504 | printf(" %.02x", data[i]); | |
505 | printf(">\n"); | |
506 | } else if (len) | |
507 | printf(" <invalid: 1 byte: %.02x>\n", data[0]); | |
508 | else | |
509 | printf(" <invalid: no data>\n"); | |
510 | return; | |
511 | } | |
512 | ||
513 | p->print(type, len, data); | |
514 | } | |
515 | ||
516 | #define PRINT_IGN { \ | |
517 | .name = "IGNORE", \ | |
518 | .print = NULL, \ | |
519 | .minlen = 0, \ | |
520 | .maxlen = 255, \ | |
4673a894 JB |
521 | } |
522 | ||
83b4934c JB |
523 | static const struct ie_print ieprinters[] = { |
524 | [0] = { "SSID", print_ssid, 0, 32, }, | |
525 | [1] = { "Supported rates", print_supprates, 0, 255, }, | |
526 | [3] = { "DS Paramater set", print_ds, 1, 1, }, | |
527 | [5] = PRINT_IGN, | |
528 | [7] = { "Country", print_country, 3, 255, }, | |
d1563a1b | 529 | [32] = { "Power constraint", print_powerconstraint, 1, 1, }, |
83b4934c JB |
530 | [42] = { "ERP", print_erp, 1, 255, }, |
531 | [48] = { "RSN", print_rsn, 2, 255, }, | |
532 | [50] = { "Extended supported rates", print_supprates, 0, 255, }, | |
533 | [127] = { "Extended capabilities", print_capabilities, 0, 255, }, | |
534 | }; | |
535 | ||
536 | static void print_wifi_wpa(const uint8_t type, uint8_t len, const uint8_t *data) | |
537 | { | |
538 | print_rsn_ie("TKIP", "IEEE 802.1X", len, data); | |
539 | } | |
540 | ||
541 | static void print_wifi_wmm(const uint8_t type, uint8_t len, const uint8_t *data) | |
6ff0c93a MH |
542 | { |
543 | int i; | |
544 | ||
6ff0c93a MH |
545 | switch (data[0]) { |
546 | case 0x00: | |
83b4934c | 547 | printf(" information:"); |
6ff0c93a MH |
548 | break; |
549 | case 0x01: | |
83b4934c | 550 | printf(" parameter:"); |
6ff0c93a MH |
551 | break; |
552 | default: | |
83b4934c | 553 | printf(" type %d:", data[0]); |
6ff0c93a MH |
554 | break; |
555 | } | |
556 | ||
83b4934c | 557 | for(i = 0; i < len - 1; i++) |
6ff0c93a MH |
558 | printf(" %.02x", data[i + 1]); |
559 | printf("\n"); | |
560 | } | |
561 | ||
83b4934c | 562 | static void print_wifi_wps(const uint8_t type, uint8_t len, const uint8_t *data) |
4673a894 JB |
563 | { |
564 | bool first = true; | |
565 | __u16 subtype, sublen; | |
566 | ||
4673a894 JB |
567 | while (len >= 4) { |
568 | subtype = (data[0] << 8) + data[1]; | |
569 | sublen = (data[2] << 8) + data[3]; | |
570 | if (sublen > len) | |
571 | break; | |
572 | ||
573 | switch (subtype) { | |
574 | case 0x104a: | |
575 | tab_on_first(&first); | |
dffc6750 | 576 | printf("\t * Version: %d.%d\n", data[4] >> 4, data[4] & 0xF); |
4673a894 JB |
577 | break; |
578 | case 0x1011: | |
579 | tab_on_first(&first); | |
580 | printf("\t * Device name: %.*s\n", sublen, data + 4); | |
581 | break; | |
582 | case 0x1021: | |
583 | tab_on_first(&first); | |
584 | printf("\t * Manufacturer: %.*s\n", sublen, data + 4); | |
585 | break; | |
586 | case 0x1023: | |
587 | tab_on_first(&first); | |
588 | printf("\t * Model: %.*s\n", sublen, data + 4); | |
589 | break; | |
7ee5a865 JB |
590 | case 0x1057: { |
591 | __u16 val = (data[4] << 8) | data[5]; | |
592 | tab_on_first(&first); | |
593 | printf("\t * AP setup locked: 0x%.4x\n", val); | |
594 | break; | |
595 | } | |
4673a894 JB |
596 | case 0x1008: { |
597 | __u16 meth = (data[4] << 8) + data[5]; | |
598 | bool comma = false; | |
599 | tab_on_first(&first); | |
600 | printf("\t * Config methods:"); | |
601 | #define T(bit, name) do { \ | |
602 | if (meth & (1<<bit)) { \ | |
603 | if (comma) \ | |
604 | printf(","); \ | |
605 | comma = true; \ | |
606 | printf(" " name); \ | |
607 | } } while (0) | |
608 | T(0, "USB"); | |
609 | T(1, "Ethernet"); | |
610 | T(2, "Label"); | |
611 | T(3, "Display"); | |
612 | T(4, "Ext. NFC"); | |
613 | T(5, "Int. NFC"); | |
614 | T(6, "NFC Intf."); | |
615 | T(7, "PBC"); | |
616 | T(8, "Keypad"); | |
617 | printf("\n"); | |
618 | break; | |
619 | #undef T | |
620 | } | |
621 | default: | |
622 | break; | |
623 | } | |
624 | ||
625 | data += sublen + 4; | |
626 | len -= sublen + 4; | |
627 | } | |
628 | ||
629 | if (len != 0) { | |
630 | printf("\t\t * bogus tail data (%d):", len); | |
631 | while (len) { | |
632 | printf(" %.2x", *data); | |
633 | data++; | |
634 | len--; | |
635 | } | |
636 | printf("\n"); | |
637 | } | |
638 | } | |
639 | ||
83b4934c JB |
640 | static const struct ie_print wifiprinters[] = { |
641 | [1] = { "WPA", print_wifi_wpa, 2, 255, }, | |
642 | [2] = { "WMM", print_wifi_wmm, 1, 255, }, | |
643 | [4] = { "WPS", print_wifi_wps, 0, 255, }, | |
4673a894 JB |
644 | }; |
645 | ||
764fe753 JB |
646 | static void print_vendor(unsigned char len, unsigned char *data, |
647 | struct scan_params *params) | |
3563f4c5 JB |
648 | { |
649 | int i; | |
650 | ||
fbf80af5 | 651 | if (len < 3) { |
4673a894 | 652 | printf("\tVendor specific: <too short> data:"); |
fbf80af5 JB |
653 | for(i = 0; i < len; i++) |
654 | printf(" %.02x", data[i]); | |
655 | printf("\n"); | |
656 | return; | |
657 | } | |
658 | ||
857d966e | 659 | if (len >= 4 && memcmp(data, wifi_oui, 3) == 0) { |
83b4934c JB |
660 | if (data[3] < ARRAY_SIZE(wifiprinters) && wifiprinters[data[3]].name) { |
661 | print_ie(&wifiprinters[data[3]], data[3], len - 4, data + 4); | |
662 | return; | |
663 | } | |
4673a894 JB |
664 | if (!params->unknown) |
665 | return; | |
857d966e | 666 | printf("\tWiFi OUI %#.2x, data:", data[3]); |
4673a894 JB |
667 | for(i = 0; i < len - 4; i++) |
668 | printf(" %.02x", data[i + 4]); | |
669 | printf("\n"); | |
670 | return; | |
671 | } | |
672 | ||
764fe753 JB |
673 | if (!params->unknown) |
674 | return; | |
675 | ||
fbf80af5 | 676 | printf("\tVendor specific: OUI %.2x:%.2x:%.2x, data:", |
3563f4c5 | 677 | data[0], data[1], data[2]); |
fbf80af5 JB |
678 | for (i = 3; i < len; i++) |
679 | printf(" %.2x", data[i]); | |
3563f4c5 JB |
680 | printf("\n"); |
681 | } | |
682 | ||
764fe753 | 683 | static void print_ies(unsigned char *ie, int ielen, struct scan_params *params) |
3563f4c5 JB |
684 | { |
685 | while (ielen >= 2 && ielen >= ie[1]) { | |
83b4934c JB |
686 | if (ie[0] < ARRAY_SIZE(ieprinters) && ieprinters[ie[0]].name) { |
687 | print_ie(&ieprinters[ie[0]], ie[0], ie[1], ie + 2); | |
764fe753 JB |
688 | } else if (ie[0] == 221 /* vendor */) { |
689 | print_vendor(ie[1], ie + 2, params); | |
690 | } else if (params->unknown) { | |
3563f4c5 JB |
691 | int i; |
692 | ||
8086b700 | 693 | printf("\tUnknown IE (%d):", ie[0]); |
3563f4c5 | 694 | for (i=0; i<ie[1]; i++) |
8086b700 | 695 | printf(" %.2x", ie[2+i]); |
3563f4c5 JB |
696 | printf("\n"); |
697 | } | |
698 | ielen -= ie[1] + 2; | |
699 | ie += ie[1] + 2; | |
700 | } | |
701 | } | |
702 | ||
703 | static int print_bss_handler(struct nl_msg *msg, void *arg) | |
704 | { | |
705 | struct nlattr *tb[NL80211_ATTR_MAX + 1]; | |
706 | struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); | |
707 | struct nlattr *bss[NL80211_BSS_MAX + 1]; | |
708 | char mac_addr[20], dev[20]; | |
709 | static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = { | |
710 | [NL80211_BSS_TSF] = { .type = NLA_U64 }, | |
711 | [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 }, | |
712 | [NL80211_BSS_BSSID] = { }, | |
713 | [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 }, | |
714 | [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 }, | |
715 | [NL80211_BSS_INFORMATION_ELEMENTS] = { }, | |
f2e17e1f JB |
716 | [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 }, |
717 | [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 }, | |
3563f4c5 JB |
718 | }; |
719 | ||
720 | nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), | |
721 | genlmsg_attrlen(gnlh, 0), NULL); | |
722 | ||
723 | if (!tb[NL80211_ATTR_BSS]) { | |
724 | fprintf(stderr, "bss info missing!"); | |
725 | return NL_SKIP; | |
726 | } | |
727 | if (nla_parse_nested(bss, NL80211_BSS_MAX, | |
728 | tb[NL80211_ATTR_BSS], | |
729 | bss_policy)) { | |
730 | fprintf(stderr, "failed to parse nested attributes!"); | |
731 | return NL_SKIP; | |
732 | } | |
733 | ||
734 | if (!bss[NL80211_BSS_BSSID]) | |
735 | return NL_SKIP; | |
736 | ||
737 | mac_addr_n2a(mac_addr, nla_data(bss[NL80211_BSS_BSSID])); | |
738 | if_indextoname(nla_get_u32(tb[NL80211_ATTR_IFINDEX]), dev); | |
739 | printf("BSS %s (on %s)\n", mac_addr, dev); | |
740 | ||
e7109a8a JB |
741 | if (bss[NL80211_BSS_TSF]) { |
742 | unsigned long long tsf; | |
743 | tsf = (unsigned long long)nla_get_u64(bss[NL80211_BSS_TSF]); | |
744 | printf("\tTSF: %llu usec (%llud, %.2lld:%.2llu:%.2llu)\n", | |
745 | tsf, tsf/1000/1000/60/60/24, (tsf/1000/1000/60/60) % 24, | |
746 | (tsf/1000/1000/60) % 60, (tsf/1000/1000) % 60); | |
747 | } | |
3563f4c5 JB |
748 | if (bss[NL80211_BSS_FREQUENCY]) |
749 | printf("\tfreq: %d\n", | |
750 | nla_get_u32(bss[NL80211_BSS_FREQUENCY])); | |
751 | if (bss[NL80211_BSS_BEACON_INTERVAL]) | |
752 | printf("\tbeacon interval: %d\n", | |
753 | nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL])); | |
92a04ecd MH |
754 | if (bss[NL80211_BSS_CAPABILITY]) { |
755 | __u16 capa = nla_get_u16(bss[NL80211_BSS_CAPABILITY]); | |
756 | printf("\tcapability:"); | |
757 | if (capa & WLAN_CAPABILITY_ESS) | |
758 | printf(" ESS"); | |
759 | if (capa & WLAN_CAPABILITY_IBSS) | |
760 | printf(" IBSS"); | |
761 | if (capa & WLAN_CAPABILITY_PRIVACY) | |
762 | printf(" Privacy"); | |
763 | if (capa & WLAN_CAPABILITY_SHORT_PREAMBLE) | |
764 | printf(" ShortPreamble"); | |
765 | if (capa & WLAN_CAPABILITY_PBCC) | |
766 | printf(" PBCC"); | |
767 | if (capa & WLAN_CAPABILITY_CHANNEL_AGILITY) | |
768 | printf(" ChannelAgility"); | |
769 | if (capa & WLAN_CAPABILITY_SPECTRUM_MGMT) | |
770 | printf(" SpectrumMgmt"); | |
771 | if (capa & WLAN_CAPABILITY_QOS) | |
772 | printf(" QoS"); | |
773 | if (capa & WLAN_CAPABILITY_SHORT_SLOT_TIME) | |
774 | printf(" ShortSlotTime"); | |
775 | if (capa & WLAN_CAPABILITY_APSD) | |
776 | printf(" APSD"); | |
777 | if (capa & WLAN_CAPABILITY_DSSS_OFDM) | |
778 | printf(" DSSS-OFDM"); | |
779 | printf(" (0x%.4x)\n", capa); | |
780 | } | |
f2e17e1f JB |
781 | if (bss[NL80211_BSS_SIGNAL_MBM]) { |
782 | int s = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]); | |
783 | printf("\tsignal: %d.%.2d dBm\n", s/100, s%100); | |
784 | } | |
785 | if (bss[NL80211_BSS_SIGNAL_UNSPEC]) { | |
786 | unsigned char s = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]); | |
787 | printf("\tsignal: %d/100\n", s); | |
788 | } | |
3563f4c5 JB |
789 | if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) |
790 | print_ies(nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]), | |
764fe753 JB |
791 | nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]), |
792 | arg); | |
3563f4c5 JB |
793 | |
794 | return NL_SKIP; | |
795 | } | |
796 | ||
764fe753 | 797 | static struct scan_params scan_params; |
3563f4c5 | 798 | |
7c37a24d JB |
799 | static int handle_scan_dump(struct nl80211_state *state, |
800 | struct nl_cb *cb, | |
3563f4c5 JB |
801 | struct nl_msg *msg, |
802 | int argc, char **argv) | |
803 | { | |
764fe753 JB |
804 | if (argc > 1) |
805 | return 1; | |
806 | ||
807 | scan_params.unknown = false; | |
808 | if (argc == 1 && !strcmp(argv[0], "-u")) | |
809 | scan_params.unknown = true; | |
810 | ||
811 | nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, print_bss_handler, | |
812 | &scan_params); | |
3563f4c5 JB |
813 | return 0; |
814 | } | |
764fe753 | 815 | COMMAND(scan, dump, "[-u]", |
6ca98d28 JB |
816 | NL80211_CMD_GET_SCAN, NLM_F_DUMP, CIB_NETDEV, handle_scan_dump, |
817 | "Dump the current scan results. If -u is specified, print unknown\n" | |
818 | "data in scan results."); | |
a5fe4ef2 JB |
819 | |
820 | static int handle_scan_combined(struct nl80211_state *state, | |
821 | struct nl_cb *cb, | |
822 | struct nl_msg *msg, | |
823 | int argc, char **argv) | |
824 | { | |
559a1713 | 825 | char **trig_argv; |
a5fe4ef2 JB |
826 | static char *dump_argv[] = { |
827 | NULL, | |
828 | "scan", | |
829 | "dump", | |
92649eab | 830 | NULL, |
a5fe4ef2 JB |
831 | }; |
832 | static const __u32 cmds[] = { | |
833 | NL80211_CMD_NEW_SCAN_RESULTS, | |
834 | NL80211_CMD_SCAN_ABORTED, | |
835 | }; | |
559a1713 | 836 | int trig_argc, dump_argc, err; |
a5fe4ef2 | 837 | |
559a1713 JB |
838 | if (argc >= 3 && !strcmp(argv[2], "-u")) { |
839 | dump_argc = 4; | |
840 | dump_argv[3] = "-u"; | |
841 | } else | |
842 | dump_argc = 3; | |
843 | ||
844 | trig_argc = 3 + (argc - 2) + (3 - dump_argc); | |
845 | trig_argv = calloc(trig_argc, sizeof(*trig_argv)); | |
846 | if (!trig_argv) | |
847 | return -ENOMEM; | |
a5fe4ef2 | 848 | trig_argv[0] = argv[0]; |
559a1713 JB |
849 | trig_argv[1] = "scan"; |
850 | trig_argv[2] = "trigger"; | |
851 | int i; | |
852 | for (i = 0; i < argc - 2 - (dump_argc - 3); i++) | |
853 | trig_argv[i + 3] = argv[i + 2 + (dump_argc - 3)]; | |
854 | err = handle_cmd(state, II_NETDEV, trig_argc, trig_argv); | |
855 | free(trig_argv); | |
a5fe4ef2 JB |
856 | if (err) |
857 | return err; | |
858 | ||
61725dbe JB |
859 | /* |
860 | * WARNING: DO NOT COPY THIS CODE INTO YOUR APPLICATION | |
861 | * | |
862 | * This code has a bug, which requires creating a separate | |
863 | * nl80211 socket to fix: | |
864 | * It is possible for a NL80211_CMD_NEW_SCAN_RESULTS or | |
865 | * NL80211_CMD_SCAN_ABORTED message to be sent by the kernel | |
866 | * before (!) we listen to it, because we only start listening | |
867 | * after we send our scan request. | |
868 | * | |
869 | * Doing it the other way around has a race condition as well, | |
870 | * if you first open the events socket you may get a notification | |
871 | * for a previous scan. | |
872 | * | |
873 | * The only proper way to fix this would be to listen to events | |
874 | * before sending the command, and for the kernel to send the | |
875 | * scan request along with the event, so that you can match up | |
876 | * whether the scan you requested was finished or aborted (this | |
877 | * may result in processing a scan that another application | |
878 | * requested, but that doesn't seem to be a problem). | |
879 | * | |
880 | * Alas, the kernel doesn't do that (yet). | |
881 | */ | |
882 | ||
a5fe4ef2 JB |
883 | if (listen_events(state, ARRAY_SIZE(cmds), cmds) == |
884 | NL80211_CMD_SCAN_ABORTED) { | |
885 | printf("scan aborted!\n"); | |
886 | return 0; | |
887 | } | |
888 | ||
889 | dump_argv[0] = argv[0]; | |
92649eab | 890 | return handle_cmd(state, II_NETDEV, dump_argc, dump_argv); |
a5fe4ef2 | 891 | } |
6ca98d28 JB |
892 | TOPLEVEL(scan, "[-u] [freq <freq>*] [ssid <ssid>*|passive]", 0, 0, |
893 | CIB_NETDEV, handle_scan_combined, | |
894 | "Scan on the given frequencies and probe for the given SSIDs\n" | |
895 | "(or wildcard if not given) unless passive scanning is requested.\n" | |
896 | "If -u is specified print unknown data in the scan results."); |