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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; |
764fe753 JB |
36 | }; |
37 | ||
7c37a24d JB |
38 | static int handle_scan(struct nl80211_state *state, |
39 | struct nl_cb *cb, | |
3563f4c5 JB |
40 | struct nl_msg *msg, |
41 | int argc, char **argv) | |
42 | { | |
559a1713 JB |
43 | struct nl_msg *ssids = NULL, *freqs = NULL; |
44 | char *eptr; | |
3563f4c5 | 45 | int err = -ENOBUFS; |
559a1713 JB |
46 | int i; |
47 | enum { | |
48 | NONE, | |
49 | FREQ, | |
50 | SSID, | |
51 | DONE, | |
52 | } parse = NONE; | |
53 | int freq; | |
54 | bool passive = false, have_ssids = false, have_freqs = false; | |
3563f4c5 JB |
55 | |
56 | ssids = nlmsg_alloc(); | |
57 | if (!ssids) | |
58 | return -ENOMEM; | |
559a1713 JB |
59 | |
60 | freqs = nlmsg_alloc(); | |
61 | if (!freqs) { | |
62 | nlmsg_free(ssids); | |
63 | return -ENOMEM; | |
64 | } | |
65 | ||
66 | for (i = 0; i < argc; i++) { | |
1ddf11eb | 67 | if (parse == NONE && strcmp(argv[i], "freq") == 0) { |
559a1713 JB |
68 | parse = FREQ; |
69 | have_freqs = true; | |
70 | continue; | |
1ddf11eb | 71 | } else if (parse < SSID && strcmp(argv[i], "ssid") == 0) { |
559a1713 JB |
72 | parse = SSID; |
73 | have_ssids = true; | |
74 | continue; | |
1ddf11eb | 75 | } else if (parse < SSID && strcmp(argv[i], "passive") == 0) { |
559a1713 JB |
76 | parse = DONE; |
77 | passive = true; | |
78 | continue; | |
79 | } | |
80 | ||
81 | switch (parse) { | |
82 | case NONE: | |
83 | case DONE: | |
84 | return 1; | |
85 | case FREQ: | |
86 | freq = strtoul(argv[i], &eptr, 10); | |
87 | if (eptr != argv[i] + strlen(argv[i])) | |
88 | return 1; | |
89 | NLA_PUT_U32(freqs, i, freq); | |
90 | break; | |
91 | case SSID: | |
92 | NLA_PUT(ssids, i, strlen(argv[i]), argv[i]); | |
93 | break; | |
94 | } | |
95 | } | |
96 | ||
97 | if (!have_ssids) | |
98 | NLA_PUT(ssids, 1, 0, ""); | |
99 | if (!passive) | |
100 | nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids); | |
101 | ||
102 | if (have_freqs) | |
103 | nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs); | |
3563f4c5 JB |
104 | |
105 | err = 0; | |
106 | nla_put_failure: | |
107 | nlmsg_free(ssids); | |
559a1713 | 108 | nlmsg_free(freqs); |
3563f4c5 JB |
109 | return err; |
110 | } | |
559a1713 | 111 | COMMAND(scan, trigger, "[freq <freq>*] [ssid <ssid>*|passive]", |
6ca98d28 JB |
112 | NL80211_CMD_TRIGGER_SCAN, 0, CIB_NETDEV, handle_scan, |
113 | "Trigger a scan on the given frequencies with probing for the given\n" | |
114 | "SSIDs (or wildcard if not given) unless passive scanning is requested."); | |
3563f4c5 | 115 | |
857d966e MH |
116 | static void tab_on_first(bool *first) |
117 | { | |
118 | if (!*first) | |
119 | printf("\t"); | |
120 | else | |
121 | *first = false; | |
122 | } | |
123 | ||
83b4934c | 124 | static void print_ssid(const uint8_t type, uint8_t len, const uint8_t *data) |
3563f4c5 | 125 | { |
83b4934c | 126 | printf(" "); |
748f8489 | 127 | print_ssid_escaped(len, data); |
3563f4c5 JB |
128 | printf("\n"); |
129 | } | |
130 | ||
83b4934c | 131 | static void print_supprates(const uint8_t type, uint8_t len, const uint8_t *data) |
3563f4c5 JB |
132 | { |
133 | int i; | |
134 | ||
83b4934c | 135 | printf(" "); |
3563f4c5 | 136 | |
83b4934c | 137 | for (i = 0; i < len; i++) { |
3563f4c5 JB |
138 | int r = data[i] & 0x7f; |
139 | printf("%d.%d%s ", r/2, 5*(r&1), data[i] & 0x80 ? "*":""); | |
140 | } | |
141 | printf("\n"); | |
142 | } | |
143 | ||
83b4934c | 144 | static void print_ds(const uint8_t type, uint8_t len, const uint8_t *data) |
3563f4c5 | 145 | { |
83b4934c | 146 | printf(" channel %d\n", data[0]); |
3563f4c5 JB |
147 | } |
148 | ||
83b4934c | 149 | static void print_country(const uint8_t type, uint8_t len, const uint8_t *data) |
b7e8fa37 MH |
150 | { |
151 | int i; | |
152 | ||
83b4934c | 153 | printf(" %.*s", 2, data); |
b7e8fa37 MH |
154 | switch (data[2]) { |
155 | case 'I': | |
156 | printf(" (indoor)"); | |
157 | break; | |
158 | case 'O': | |
159 | printf(" (outdoor)"); | |
160 | break; | |
b6c0d634 JB |
161 | case ' ': |
162 | printf(" (in/outdoor)"); | |
163 | break; | |
164 | default: | |
165 | printf(" (invalid environment)"); | |
166 | break; | |
b7e8fa37 MH |
167 | } |
168 | printf(", data:"); | |
169 | for(i=0; i<len-3; i++) | |
170 | printf(" %.02x", data[i + 3]); | |
171 | printf("\n"); | |
172 | } | |
173 | ||
d1563a1b MH |
174 | static void print_powerconstraint(const uint8_t type, uint8_t len, const uint8_t *data) |
175 | { | |
176 | printf(" %d dB\n", data[0]); | |
177 | } | |
178 | ||
83b4934c | 179 | static void print_erp(const uint8_t type, uint8_t len, const uint8_t *data) |
fc4d1484 MH |
180 | { |
181 | if (data[0] == 0x00) | |
83b4934c | 182 | printf(" <no flags>"); |
fc4d1484 MH |
183 | if (data[0] & 0x01) |
184 | printf(" NonERP_Present"); | |
185 | if (data[0] & 0x02) | |
186 | printf(" Use_Protection"); | |
187 | if (data[0] & 0x04) | |
188 | printf(" Barker_Preamble_Mode"); | |
189 | printf("\n"); | |
190 | } | |
191 | ||
83b4934c | 192 | static void print_cipher(const uint8_t *data) |
857d966e MH |
193 | { |
194 | if (memcmp(data, wifi_oui, 3) == 0) { | |
195 | switch (data[3]) { | |
510e0e2f | 196 | case 0: |
857d966e MH |
197 | printf("Use group cipher suite"); |
198 | break; | |
510e0e2f | 199 | case 1: |
857d966e MH |
200 | printf("WEP-40"); |
201 | break; | |
510e0e2f | 202 | case 2: |
857d966e MH |
203 | printf("TKIP"); |
204 | break; | |
510e0e2f | 205 | case 4: |
857d966e MH |
206 | printf("CCMP"); |
207 | break; | |
510e0e2f | 208 | case 5: |
857d966e MH |
209 | printf("WEP-104"); |
210 | break; | |
211 | default: | |
332769c6 | 212 | printf("%.02x-%.02x-%.02x:%d", |
5594fd23 | 213 | data[0], data[1] ,data[2], data[3]); |
857d966e MH |
214 | break; |
215 | } | |
216 | } else if (memcmp(data, ieee80211_oui, 3) == 0) { | |
217 | switch (data[3]) { | |
510e0e2f | 218 | case 0: |
857d966e MH |
219 | printf("Use group cipher suite"); |
220 | break; | |
510e0e2f | 221 | case 1: |
857d966e MH |
222 | printf("WEP-40"); |
223 | break; | |
510e0e2f | 224 | case 2: |
857d966e MH |
225 | printf("TKIP"); |
226 | break; | |
510e0e2f | 227 | case 4: |
857d966e MH |
228 | printf("CCMP"); |
229 | break; | |
510e0e2f | 230 | case 5: |
857d966e MH |
231 | printf("WEP-104"); |
232 | break; | |
510e0e2f | 233 | case 6: |
857d966e MH |
234 | printf("AES-128-CMAC"); |
235 | break; | |
236 | default: | |
332769c6 | 237 | printf("%.02x-%.02x-%.02x:%d", |
5594fd23 | 238 | data[0], data[1] ,data[2], data[3]); |
857d966e MH |
239 | break; |
240 | } | |
241 | } else | |
332769c6 | 242 | printf("%.02x-%.02x-%.02x:%d", |
5594fd23 | 243 | data[0], data[1] ,data[2], data[3]); |
857d966e MH |
244 | } |
245 | ||
83b4934c | 246 | static void print_auth(const uint8_t *data) |
857d966e MH |
247 | { |
248 | if (memcmp(data, wifi_oui, 3) == 0) { | |
249 | switch (data[3]) { | |
510e0e2f | 250 | case 1: |
857d966e MH |
251 | printf("IEEE 802.1X"); |
252 | break; | |
510e0e2f | 253 | case 2: |
857d966e MH |
254 | printf("PSK"); |
255 | break; | |
256 | default: | |
332769c6 | 257 | printf("%.02x-%.02x-%.02x:%d", |
5594fd23 | 258 | data[0], data[1] ,data[2], data[3]); |
857d966e MH |
259 | break; |
260 | } | |
261 | } else if (memcmp(data, ieee80211_oui, 3) == 0) { | |
262 | switch (data[3]) { | |
510e0e2f | 263 | case 1: |
857d966e MH |
264 | printf("IEEE 802.1X"); |
265 | break; | |
510e0e2f | 266 | case 2: |
857d966e MH |
267 | printf("PSK"); |
268 | break; | |
0fe1c415 JB |
269 | case 3: |
270 | printf("FT/IEEE 802.1X"); | |
271 | break; | |
272 | case 4: | |
273 | printf("FT/PSK"); | |
274 | break; | |
275 | case 5: | |
276 | printf("IEEE 802.1X/SHA-256"); | |
277 | break; | |
278 | case 6: | |
279 | printf("PSK/SHA-256"); | |
280 | break; | |
857d966e | 281 | default: |
332769c6 | 282 | printf("%.02x-%.02x-%.02x:%d", |
5594fd23 | 283 | data[0], data[1] ,data[2], data[3]); |
857d966e MH |
284 | break; |
285 | } | |
286 | } else | |
332769c6 | 287 | printf("%.02x-%.02x-%.02x:%d", |
5594fd23 | 288 | data[0], data[1] ,data[2], data[3]); |
857d966e MH |
289 | } |
290 | ||
83b4934c JB |
291 | static void print_rsn_ie(const char *defcipher, const char *defauth, |
292 | uint8_t len, const uint8_t *data) | |
857d966e MH |
293 | { |
294 | bool first = true; | |
295 | __u16 version, count, capa; | |
296 | int i; | |
297 | ||
857d966e MH |
298 | version = data[0] + (data[1] << 8); |
299 | tab_on_first(&first); | |
300 | printf("\t * Version: %d\n", version); | |
301 | ||
302 | data += 2; | |
303 | len -= 2; | |
304 | ||
305 | if (len < 4) { | |
306 | tab_on_first(&first); | |
307 | printf("\t * Group cipher: %s\n", defcipher); | |
308 | printf("\t * Pairwise ciphers: %s\n", defcipher); | |
309 | return; | |
310 | } | |
311 | ||
312 | tab_on_first(&first); | |
313 | printf("\t * Group cipher: "); | |
314 | print_cipher(data); | |
315 | printf("\n"); | |
316 | ||
317 | data += 4; | |
318 | len -= 4; | |
319 | ||
320 | if (len < 2) { | |
321 | tab_on_first(&first); | |
322 | printf("\t * Pairwise ciphers: %s\n", defcipher); | |
323 | return; | |
324 | } | |
325 | ||
326 | count = data[0] | (data[1] << 8); | |
31d477fb MH |
327 | if (2 + (count * 4) > len) |
328 | goto invalid; | |
329 | ||
857d966e MH |
330 | tab_on_first(&first); |
331 | printf("\t * Pairwise ciphers:"); | |
31d477fb | 332 | for (i = 0; i < count; i++) { |
857d966e MH |
333 | printf(" "); |
334 | print_cipher(data + 2 + (i * 4)); | |
335 | } | |
336 | printf("\n"); | |
337 | ||
338 | data += 2 + (count * 4); | |
339 | len -= 2 + (count * 4); | |
340 | ||
341 | if (len < 2) { | |
342 | tab_on_first(&first); | |
343 | printf("\t * Authentication suites: %s\n", defauth); | |
344 | return; | |
345 | } | |
346 | ||
347 | count = data[0] | (data[1] << 8); | |
31d477fb MH |
348 | if (2 + (count * 4) > len) |
349 | goto invalid; | |
350 | ||
857d966e MH |
351 | tab_on_first(&first); |
352 | printf("\t * Authentication suites:"); | |
83b4934c | 353 | for (i = 0; i < count; i++) { |
857d966e MH |
354 | printf(" "); |
355 | print_auth(data + 2 + (i * 4)); | |
356 | } | |
357 | printf("\n"); | |
358 | ||
359 | data += 2 + (count * 4); | |
360 | len -= 2 + (count * 4); | |
361 | ||
6a4f24e8 JB |
362 | if (len >= 2) { |
363 | capa = data[0] | (data[1] << 8); | |
364 | tab_on_first(&first); | |
cadbe89a JB |
365 | printf("\t * Capabilities:"); |
366 | if (capa & 0x0001) | |
367 | printf(" PreAuth"); | |
368 | if (capa & 0x0002) | |
369 | printf(" NoPairwise"); | |
370 | switch ((capa & 0x000c) >> 2) { | |
371 | case 0: | |
372 | break; | |
373 | case 1: | |
374 | printf(" 2-PTKSA-RC"); | |
375 | break; | |
376 | case 2: | |
377 | printf(" 4-PTKSA-RC"); | |
378 | break; | |
379 | case 3: | |
380 | printf(" 16-PTKSA-RC"); | |
381 | break; | |
382 | } | |
383 | switch ((capa & 0x0030) >> 4) { | |
384 | case 0: | |
385 | break; | |
386 | case 1: | |
387 | printf(" 2-GTKSA-RC"); | |
388 | break; | |
389 | case 2: | |
390 | printf(" 4-GTKSA-RC"); | |
391 | break; | |
392 | case 3: | |
393 | printf(" 16-GTKSA-RC"); | |
394 | break; | |
395 | } | |
396 | if (capa & 0x0040) | |
397 | printf(" MFP-required"); | |
398 | if (capa & 0x0080) | |
399 | printf(" MFP-capable"); | |
400 | if (capa & 0x0200) | |
401 | printf(" Peerkey-enabled"); | |
402 | if (capa & 0x0400) | |
403 | printf(" SPP-AMSDU-capable"); | |
404 | if (capa & 0x0800) | |
405 | printf(" SPP-AMSDU-required"); | |
406 | printf(" (0x%.4x)\n", capa); | |
6a4f24e8 JB |
407 | data += 2; |
408 | len -= 2; | |
409 | } | |
31d477fb | 410 | |
cadbe89a | 411 | invalid: |
31d477fb MH |
412 | if (len != 0) { |
413 | printf("\t\t * bogus tail data (%d):", len); | |
414 | while (len) { | |
415 | printf(" %.2x", *data); | |
416 | data++; | |
417 | len--; | |
418 | } | |
419 | printf("\n"); | |
420 | } | |
857d966e MH |
421 | } |
422 | ||
83b4934c | 423 | static void print_rsn(const uint8_t type, uint8_t len, const uint8_t *data) |
857d966e | 424 | { |
83b4934c | 425 | print_rsn_ie("CCMP", "IEEE 802.1X", len, data); |
857d966e MH |
426 | } |
427 | ||
83b4934c | 428 | static void print_capabilities(const uint8_t type, uint8_t len, const uint8_t *data) |
9b880b00 | 429 | { |
31d2d259 JB |
430 | int i, base, bit; |
431 | bool first = true; | |
432 | ||
433 | ||
434 | for (i = 0; i < len; i++) { | |
435 | base = i * 8; | |
436 | ||
437 | for (bit = 0; bit < 8; bit++) { | |
438 | if (!(data[i] & (1 << bit))) | |
439 | continue; | |
440 | ||
441 | if (!first) | |
442 | printf(","); | |
443 | else | |
444 | first = false; | |
445 | ||
446 | switch (bit + base) { | |
447 | case 0: | |
448 | printf(" HT Information Exchange Supported"); | |
449 | break; | |
450 | case 1: | |
451 | printf(" On-demand Beacon"); | |
452 | break; | |
453 | case 2: | |
454 | printf(" Extended Channel Switching"); | |
455 | break; | |
456 | case 3: | |
457 | printf(" Wave Indication"); | |
458 | break; | |
459 | case 4: | |
460 | printf(" PSMP Capability"); | |
461 | break; | |
462 | case 5: | |
463 | printf(" Service Interval Granularity"); | |
464 | break; | |
465 | case 6: | |
466 | printf(" S-PSMP Capability"); | |
467 | break; | |
468 | default: | |
469 | printf(" %d", bit); | |
470 | break; | |
471 | } | |
472 | } | |
473 | } | |
9b880b00 | 474 | |
9b880b00 MH |
475 | printf("\n"); |
476 | } | |
477 | ||
83b4934c JB |
478 | struct ie_print { |
479 | const char *name; | |
480 | void (*print)(const uint8_t type, uint8_t len, const uint8_t *data); | |
481 | uint8_t minlen, maxlen; | |
febeb0c0 | 482 | uint8_t flags; |
764fe753 JB |
483 | }; |
484 | ||
83b4934c JB |
485 | static void print_ie(const struct ie_print *p, const uint8_t type, |
486 | uint8_t len, const uint8_t *data) | |
4673a894 | 487 | { |
83b4934c JB |
488 | int i; |
489 | ||
490 | if (!p->print) | |
491 | return; | |
492 | ||
493 | printf("\t%s:", p->name); | |
494 | if (len < p->minlen || len > p->maxlen) { | |
495 | if (len > 1) { | |
496 | printf(" <invalid: %d bytes:", len); | |
497 | for (i = 0; i < len; i++) | |
498 | printf(" %.02x", data[i]); | |
499 | printf(">\n"); | |
500 | } else if (len) | |
501 | printf(" <invalid: 1 byte: %.02x>\n", data[0]); | |
502 | else | |
503 | printf(" <invalid: no data>\n"); | |
504 | return; | |
505 | } | |
506 | ||
507 | p->print(type, len, data); | |
508 | } | |
509 | ||
510 | #define PRINT_IGN { \ | |
511 | .name = "IGNORE", \ | |
512 | .print = NULL, \ | |
513 | .minlen = 0, \ | |
514 | .maxlen = 255, \ | |
4673a894 JB |
515 | } |
516 | ||
83b4934c | 517 | static const struct ie_print ieprinters[] = { |
febeb0c0 JB |
518 | [0] = { "SSID", print_ssid, 0, 32, BIT(PRINT_SCAN) | BIT(PRINT_LINK), }, |
519 | [1] = { "Supported rates", print_supprates, 0, 255, BIT(PRINT_SCAN), }, | |
520 | [3] = { "DS Paramater set", print_ds, 1, 1, BIT(PRINT_SCAN), }, | |
83b4934c | 521 | [5] = PRINT_IGN, |
febeb0c0 JB |
522 | [7] = { "Country", print_country, 3, 255, BIT(PRINT_SCAN), }, |
523 | [32] = { "Power constraint", print_powerconstraint, 1, 1, BIT(PRINT_SCAN), }, | |
524 | [42] = { "ERP", print_erp, 1, 255, BIT(PRINT_SCAN), }, | |
525 | [48] = { "RSN", print_rsn, 2, 255, BIT(PRINT_SCAN), }, | |
526 | [50] = { "Extended supported rates", print_supprates, 0, 255, BIT(PRINT_SCAN), }, | |
527 | [127] = { "Extended capabilities", print_capabilities, 0, 255, BIT(PRINT_SCAN), }, | |
83b4934c JB |
528 | }; |
529 | ||
530 | static void print_wifi_wpa(const uint8_t type, uint8_t len, const uint8_t *data) | |
531 | { | |
532 | print_rsn_ie("TKIP", "IEEE 802.1X", len, data); | |
533 | } | |
534 | ||
535 | static void print_wifi_wmm(const uint8_t type, uint8_t len, const uint8_t *data) | |
6ff0c93a MH |
536 | { |
537 | int i; | |
538 | ||
6ff0c93a MH |
539 | switch (data[0]) { |
540 | case 0x00: | |
83b4934c | 541 | printf(" information:"); |
6ff0c93a MH |
542 | break; |
543 | case 0x01: | |
83b4934c | 544 | printf(" parameter:"); |
6ff0c93a MH |
545 | break; |
546 | default: | |
83b4934c | 547 | printf(" type %d:", data[0]); |
6ff0c93a MH |
548 | break; |
549 | } | |
550 | ||
83b4934c | 551 | for(i = 0; i < len - 1; i++) |
6ff0c93a MH |
552 | printf(" %.02x", data[i + 1]); |
553 | printf("\n"); | |
554 | } | |
555 | ||
83b4934c | 556 | static void print_wifi_wps(const uint8_t type, uint8_t len, const uint8_t *data) |
4673a894 JB |
557 | { |
558 | bool first = true; | |
559 | __u16 subtype, sublen; | |
560 | ||
4673a894 JB |
561 | while (len >= 4) { |
562 | subtype = (data[0] << 8) + data[1]; | |
563 | sublen = (data[2] << 8) + data[3]; | |
564 | if (sublen > len) | |
565 | break; | |
566 | ||
567 | switch (subtype) { | |
568 | case 0x104a: | |
569 | tab_on_first(&first); | |
dffc6750 | 570 | printf("\t * Version: %d.%d\n", data[4] >> 4, data[4] & 0xF); |
4673a894 JB |
571 | break; |
572 | case 0x1011: | |
573 | tab_on_first(&first); | |
574 | printf("\t * Device name: %.*s\n", sublen, data + 4); | |
575 | break; | |
576 | case 0x1021: | |
577 | tab_on_first(&first); | |
578 | printf("\t * Manufacturer: %.*s\n", sublen, data + 4); | |
579 | break; | |
580 | case 0x1023: | |
581 | tab_on_first(&first); | |
582 | printf("\t * Model: %.*s\n", sublen, data + 4); | |
583 | break; | |
7ee5a865 | 584 | case 0x1057: { |
fe31a22e | 585 | __u8 val = data[4]; |
7ee5a865 | 586 | tab_on_first(&first); |
fe31a22e | 587 | printf("\t * AP setup locked: 0x%.2x\n", val); |
7ee5a865 JB |
588 | break; |
589 | } | |
4673a894 JB |
590 | case 0x1008: { |
591 | __u16 meth = (data[4] << 8) + data[5]; | |
592 | bool comma = false; | |
593 | tab_on_first(&first); | |
594 | printf("\t * Config methods:"); | |
595 | #define T(bit, name) do { \ | |
596 | if (meth & (1<<bit)) { \ | |
597 | if (comma) \ | |
598 | printf(","); \ | |
599 | comma = true; \ | |
600 | printf(" " name); \ | |
601 | } } while (0) | |
602 | T(0, "USB"); | |
603 | T(1, "Ethernet"); | |
604 | T(2, "Label"); | |
605 | T(3, "Display"); | |
606 | T(4, "Ext. NFC"); | |
607 | T(5, "Int. NFC"); | |
608 | T(6, "NFC Intf."); | |
609 | T(7, "PBC"); | |
610 | T(8, "Keypad"); | |
611 | printf("\n"); | |
612 | break; | |
613 | #undef T | |
614 | } | |
615 | default: | |
616 | break; | |
617 | } | |
618 | ||
619 | data += sublen + 4; | |
620 | len -= sublen + 4; | |
621 | } | |
622 | ||
623 | if (len != 0) { | |
624 | printf("\t\t * bogus tail data (%d):", len); | |
625 | while (len) { | |
626 | printf(" %.2x", *data); | |
627 | data++; | |
628 | len--; | |
629 | } | |
630 | printf("\n"); | |
631 | } | |
632 | } | |
633 | ||
83b4934c | 634 | static const struct ie_print wifiprinters[] = { |
febeb0c0 JB |
635 | [1] = { "WPA", print_wifi_wpa, 2, 255, BIT(PRINT_SCAN), }, |
636 | [2] = { "WMM", print_wifi_wmm, 1, 255, BIT(PRINT_SCAN), }, | |
637 | [4] = { "WPS", print_wifi_wps, 0, 255, BIT(PRINT_SCAN), }, | |
4673a894 JB |
638 | }; |
639 | ||
764fe753 | 640 | static void print_vendor(unsigned char len, unsigned char *data, |
febeb0c0 | 641 | bool unknown, enum print_ie_type ptype) |
3563f4c5 JB |
642 | { |
643 | int i; | |
644 | ||
fbf80af5 | 645 | if (len < 3) { |
4673a894 | 646 | printf("\tVendor specific: <too short> data:"); |
fbf80af5 JB |
647 | for(i = 0; i < len; i++) |
648 | printf(" %.02x", data[i]); | |
649 | printf("\n"); | |
650 | return; | |
651 | } | |
652 | ||
857d966e | 653 | if (len >= 4 && memcmp(data, wifi_oui, 3) == 0) { |
febeb0c0 JB |
654 | if (data[3] < ARRAY_SIZE(wifiprinters) && |
655 | wifiprinters[data[3]].name && | |
656 | wifiprinters[data[3]].flags & BIT(ptype)) { | |
83b4934c JB |
657 | print_ie(&wifiprinters[data[3]], data[3], len - 4, data + 4); |
658 | return; | |
659 | } | |
febeb0c0 | 660 | if (!unknown) |
4673a894 | 661 | return; |
857d966e | 662 | printf("\tWiFi OUI %#.2x, data:", data[3]); |
4673a894 JB |
663 | for(i = 0; i < len - 4; i++) |
664 | printf(" %.02x", data[i + 4]); | |
665 | printf("\n"); | |
666 | return; | |
667 | } | |
668 | ||
febeb0c0 | 669 | if (!unknown) |
764fe753 JB |
670 | return; |
671 | ||
fbf80af5 | 672 | printf("\tVendor specific: OUI %.2x:%.2x:%.2x, data:", |
3563f4c5 | 673 | data[0], data[1], data[2]); |
fbf80af5 JB |
674 | for (i = 3; i < len; i++) |
675 | printf(" %.2x", data[i]); | |
3563f4c5 JB |
676 | printf("\n"); |
677 | } | |
678 | ||
febeb0c0 JB |
679 | void print_ies(unsigned char *ie, int ielen, bool unknown, |
680 | enum print_ie_type ptype) | |
3563f4c5 JB |
681 | { |
682 | while (ielen >= 2 && ielen >= ie[1]) { | |
febeb0c0 JB |
683 | if (ie[0] < ARRAY_SIZE(ieprinters) && |
684 | ieprinters[ie[0]].name && | |
685 | ieprinters[ie[0]].flags & BIT(ptype)) { | |
83b4934c | 686 | print_ie(&ieprinters[ie[0]], ie[0], ie[1], ie + 2); |
764fe753 | 687 | } else if (ie[0] == 221 /* vendor */) { |
febeb0c0 JB |
688 | print_vendor(ie[1], ie + 2, unknown, ptype); |
689 | } else if (unknown) { | |
3563f4c5 JB |
690 | int i; |
691 | ||
8086b700 | 692 | printf("\tUnknown IE (%d):", ie[0]); |
3563f4c5 | 693 | for (i=0; i<ie[1]; i++) |
8086b700 | 694 | printf(" %.2x", ie[2+i]); |
3563f4c5 JB |
695 | printf("\n"); |
696 | } | |
697 | ielen -= ie[1] + 2; | |
698 | ie += ie[1] + 2; | |
699 | } | |
700 | } | |
701 | ||
702 | static int print_bss_handler(struct nl_msg *msg, void *arg) | |
703 | { | |
704 | struct nlattr *tb[NL80211_ATTR_MAX + 1]; | |
705 | struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); | |
706 | struct nlattr *bss[NL80211_BSS_MAX + 1]; | |
707 | char mac_addr[20], dev[20]; | |
708 | static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = { | |
709 | [NL80211_BSS_TSF] = { .type = NLA_U64 }, | |
710 | [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 }, | |
711 | [NL80211_BSS_BSSID] = { }, | |
712 | [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 }, | |
713 | [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 }, | |
714 | [NL80211_BSS_INFORMATION_ELEMENTS] = { }, | |
f2e17e1f JB |
715 | [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 }, |
716 | [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 }, | |
a56117a6 | 717 | [NL80211_BSS_STATUS] = { .type = NLA_U32 }, |
3563f4c5 | 718 | }; |
febeb0c0 | 719 | struct scan_params *params = arg; |
3563f4c5 JB |
720 | |
721 | nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), | |
722 | genlmsg_attrlen(gnlh, 0), NULL); | |
723 | ||
724 | if (!tb[NL80211_ATTR_BSS]) { | |
725 | fprintf(stderr, "bss info missing!"); | |
726 | return NL_SKIP; | |
727 | } | |
728 | if (nla_parse_nested(bss, NL80211_BSS_MAX, | |
729 | tb[NL80211_ATTR_BSS], | |
730 | bss_policy)) { | |
731 | fprintf(stderr, "failed to parse nested attributes!"); | |
732 | return NL_SKIP; | |
733 | } | |
734 | ||
735 | if (!bss[NL80211_BSS_BSSID]) | |
736 | return NL_SKIP; | |
737 | ||
738 | mac_addr_n2a(mac_addr, nla_data(bss[NL80211_BSS_BSSID])); | |
739 | if_indextoname(nla_get_u32(tb[NL80211_ATTR_IFINDEX]), dev); | |
a56117a6 JB |
740 | printf("BSS %s (on %s)", mac_addr, dev); |
741 | ||
742 | if (bss[NL80211_BSS_STATUS]) { | |
743 | switch (nla_get_u32(bss[NL80211_BSS_STATUS])) { | |
744 | case NL80211_BSS_STATUS_AUTHENTICATED: | |
745 | printf(" -- authenticated"); | |
746 | break; | |
747 | case NL80211_BSS_STATUS_ASSOCIATED: | |
748 | printf(" -- associated"); | |
749 | break; | |
750 | case NL80211_BSS_STATUS_IBSS_JOINED: | |
751 | printf(" -- joined"); | |
752 | break; | |
753 | default: | |
754 | printf(" -- unknown status: %d", | |
755 | nla_get_u32(bss[NL80211_BSS_STATUS])); | |
756 | break; | |
757 | } | |
758 | } | |
759 | printf("\n"); | |
3563f4c5 | 760 | |
e7109a8a JB |
761 | if (bss[NL80211_BSS_TSF]) { |
762 | unsigned long long tsf; | |
763 | tsf = (unsigned long long)nla_get_u64(bss[NL80211_BSS_TSF]); | |
764 | printf("\tTSF: %llu usec (%llud, %.2lld:%.2llu:%.2llu)\n", | |
765 | tsf, tsf/1000/1000/60/60/24, (tsf/1000/1000/60/60) % 24, | |
766 | (tsf/1000/1000/60) % 60, (tsf/1000/1000) % 60); | |
767 | } | |
3563f4c5 JB |
768 | if (bss[NL80211_BSS_FREQUENCY]) |
769 | printf("\tfreq: %d\n", | |
770 | nla_get_u32(bss[NL80211_BSS_FREQUENCY])); | |
771 | if (bss[NL80211_BSS_BEACON_INTERVAL]) | |
772 | printf("\tbeacon interval: %d\n", | |
773 | nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL])); | |
92a04ecd MH |
774 | if (bss[NL80211_BSS_CAPABILITY]) { |
775 | __u16 capa = nla_get_u16(bss[NL80211_BSS_CAPABILITY]); | |
776 | printf("\tcapability:"); | |
777 | if (capa & WLAN_CAPABILITY_ESS) | |
778 | printf(" ESS"); | |
779 | if (capa & WLAN_CAPABILITY_IBSS) | |
780 | printf(" IBSS"); | |
781 | if (capa & WLAN_CAPABILITY_PRIVACY) | |
782 | printf(" Privacy"); | |
783 | if (capa & WLAN_CAPABILITY_SHORT_PREAMBLE) | |
784 | printf(" ShortPreamble"); | |
785 | if (capa & WLAN_CAPABILITY_PBCC) | |
786 | printf(" PBCC"); | |
787 | if (capa & WLAN_CAPABILITY_CHANNEL_AGILITY) | |
788 | printf(" ChannelAgility"); | |
789 | if (capa & WLAN_CAPABILITY_SPECTRUM_MGMT) | |
790 | printf(" SpectrumMgmt"); | |
791 | if (capa & WLAN_CAPABILITY_QOS) | |
792 | printf(" QoS"); | |
793 | if (capa & WLAN_CAPABILITY_SHORT_SLOT_TIME) | |
794 | printf(" ShortSlotTime"); | |
795 | if (capa & WLAN_CAPABILITY_APSD) | |
796 | printf(" APSD"); | |
797 | if (capa & WLAN_CAPABILITY_DSSS_OFDM) | |
798 | printf(" DSSS-OFDM"); | |
799 | printf(" (0x%.4x)\n", capa); | |
800 | } | |
f2e17e1f JB |
801 | if (bss[NL80211_BSS_SIGNAL_MBM]) { |
802 | int s = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]); | |
803 | printf("\tsignal: %d.%.2d dBm\n", s/100, s%100); | |
804 | } | |
805 | if (bss[NL80211_BSS_SIGNAL_UNSPEC]) { | |
806 | unsigned char s = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]); | |
807 | printf("\tsignal: %d/100\n", s); | |
808 | } | |
3563f4c5 JB |
809 | if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) |
810 | print_ies(nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]), | |
764fe753 | 811 | nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]), |
febeb0c0 | 812 | params->unknown, params->type); |
3563f4c5 JB |
813 | |
814 | return NL_SKIP; | |
815 | } | |
816 | ||
764fe753 | 817 | static struct scan_params scan_params; |
3563f4c5 | 818 | |
7c37a24d JB |
819 | static int handle_scan_dump(struct nl80211_state *state, |
820 | struct nl_cb *cb, | |
3563f4c5 JB |
821 | struct nl_msg *msg, |
822 | int argc, char **argv) | |
823 | { | |
764fe753 JB |
824 | if (argc > 1) |
825 | return 1; | |
826 | ||
827 | scan_params.unknown = false; | |
828 | if (argc == 1 && !strcmp(argv[0], "-u")) | |
829 | scan_params.unknown = true; | |
830 | ||
febeb0c0 JB |
831 | scan_params.type = PRINT_SCAN; |
832 | ||
764fe753 JB |
833 | nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, print_bss_handler, |
834 | &scan_params); | |
3563f4c5 JB |
835 | return 0; |
836 | } | |
764fe753 | 837 | COMMAND(scan, dump, "[-u]", |
6ca98d28 JB |
838 | NL80211_CMD_GET_SCAN, NLM_F_DUMP, CIB_NETDEV, handle_scan_dump, |
839 | "Dump the current scan results. If -u is specified, print unknown\n" | |
840 | "data in scan results."); | |
a5fe4ef2 JB |
841 | |
842 | static int handle_scan_combined(struct nl80211_state *state, | |
843 | struct nl_cb *cb, | |
844 | struct nl_msg *msg, | |
845 | int argc, char **argv) | |
846 | { | |
559a1713 | 847 | char **trig_argv; |
a5fe4ef2 JB |
848 | static char *dump_argv[] = { |
849 | NULL, | |
850 | "scan", | |
851 | "dump", | |
92649eab | 852 | NULL, |
a5fe4ef2 JB |
853 | }; |
854 | static const __u32 cmds[] = { | |
855 | NL80211_CMD_NEW_SCAN_RESULTS, | |
856 | NL80211_CMD_SCAN_ABORTED, | |
857 | }; | |
559a1713 | 858 | int trig_argc, dump_argc, err; |
a5fe4ef2 | 859 | |
559a1713 JB |
860 | if (argc >= 3 && !strcmp(argv[2], "-u")) { |
861 | dump_argc = 4; | |
862 | dump_argv[3] = "-u"; | |
863 | } else | |
864 | dump_argc = 3; | |
865 | ||
866 | trig_argc = 3 + (argc - 2) + (3 - dump_argc); | |
867 | trig_argv = calloc(trig_argc, sizeof(*trig_argv)); | |
868 | if (!trig_argv) | |
869 | return -ENOMEM; | |
a5fe4ef2 | 870 | trig_argv[0] = argv[0]; |
559a1713 JB |
871 | trig_argv[1] = "scan"; |
872 | trig_argv[2] = "trigger"; | |
873 | int i; | |
874 | for (i = 0; i < argc - 2 - (dump_argc - 3); i++) | |
875 | trig_argv[i + 3] = argv[i + 2 + (dump_argc - 3)]; | |
876 | err = handle_cmd(state, II_NETDEV, trig_argc, trig_argv); | |
877 | free(trig_argv); | |
a5fe4ef2 JB |
878 | if (err) |
879 | return err; | |
880 | ||
61725dbe JB |
881 | /* |
882 | * WARNING: DO NOT COPY THIS CODE INTO YOUR APPLICATION | |
883 | * | |
884 | * This code has a bug, which requires creating a separate | |
885 | * nl80211 socket to fix: | |
886 | * It is possible for a NL80211_CMD_NEW_SCAN_RESULTS or | |
887 | * NL80211_CMD_SCAN_ABORTED message to be sent by the kernel | |
888 | * before (!) we listen to it, because we only start listening | |
889 | * after we send our scan request. | |
890 | * | |
891 | * Doing it the other way around has a race condition as well, | |
892 | * if you first open the events socket you may get a notification | |
893 | * for a previous scan. | |
894 | * | |
895 | * The only proper way to fix this would be to listen to events | |
896 | * before sending the command, and for the kernel to send the | |
897 | * scan request along with the event, so that you can match up | |
898 | * whether the scan you requested was finished or aborted (this | |
899 | * may result in processing a scan that another application | |
900 | * requested, but that doesn't seem to be a problem). | |
901 | * | |
902 | * Alas, the kernel doesn't do that (yet). | |
903 | */ | |
904 | ||
a5fe4ef2 JB |
905 | if (listen_events(state, ARRAY_SIZE(cmds), cmds) == |
906 | NL80211_CMD_SCAN_ABORTED) { | |
907 | printf("scan aborted!\n"); | |
908 | return 0; | |
909 | } | |
910 | ||
911 | dump_argv[0] = argv[0]; | |
92649eab | 912 | return handle_cmd(state, II_NETDEV, dump_argc, dump_argv); |
a5fe4ef2 | 913 | } |
6ca98d28 JB |
914 | TOPLEVEL(scan, "[-u] [freq <freq>*] [ssid <ssid>*|passive]", 0, 0, |
915 | CIB_NETDEV, handle_scan_combined, | |
916 | "Scan on the given frequencies and probe for the given SSIDs\n" | |
917 | "(or wildcard if not given) unless passive scanning is requested.\n" | |
918 | "If -u is specified print unknown data in the scan results."); |