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>
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_RADIO_MEASURE (1<<12)
29 #define WLAN_CAPABILITY_DSSS_OFDM (1<<13)
30 #define WLAN_CAPABILITY_DEL_BACK (1<<14)
31 #define WLAN_CAPABILITY_IMM_BACK (1<<15)
32 /* DMG (60gHz) 802.11ad */
33 /* type - bits 0..1 */
34 #define WLAN_CAPABILITY_DMG_TYPE_MASK (3<<0)
36 #define WLAN_CAPABILITY_DMG_TYPE_IBSS (1<<0) /* Tx by: STA */
37 #define WLAN_CAPABILITY_DMG_TYPE_PBSS (2<<0) /* Tx by: PCP */
38 #define WLAN_CAPABILITY_DMG_TYPE_AP (3<<0) /* Tx by: AP */
40 #define WLAN_CAPABILITY_DMG_CBAP_ONLY (1<<2)
41 #define WLAN_CAPABILITY_DMG_CBAP_SOURCE (1<<3)
42 #define WLAN_CAPABILITY_DMG_PRIVACY (1<<4)
43 #define WLAN_CAPABILITY_DMG_ECPAC (1<<5)
45 #define WLAN_CAPABILITY_DMG_SPECTRUM_MGMT (1<<8)
46 #define WLAN_CAPABILITY_DMG_RADIO_MEASURE (1<<12)
48 static unsigned char ms_oui
[3] = { 0x00, 0x50, 0xf2 };
49 static unsigned char ieee80211_oui
[3] = { 0x00, 0x0f, 0xac };
50 static unsigned char wfa_oui
[3] = { 0x50, 0x6f, 0x9a };
54 enum print_ie_type type
;
55 bool show_both_ie_sets
;
58 #define IEEE80211_COUNTRY_EXTENSION_ID 201
60 union ieee80211_country_ie_triplet
{
65 } __attribute__ ((packed
)) chans
;
67 __u8 reg_extension_id
;
70 } __attribute__ ((packed
)) ext
;
71 } __attribute__ ((packed
));
73 static int handle_scan(struct nl80211_state
*state
,
76 int argc
, char **argv
,
79 struct nl_msg
*ssids
= NULL
, *freqs
= NULL
;
91 bool passive
= false, have_ssids
= false, have_freqs
= false;
96 ssids
= nlmsg_alloc();
100 freqs
= nlmsg_alloc();
106 for (i
= 0; i
< argc
; i
++) {
109 if (strcmp(argv
[i
], "freq") == 0) {
113 } else if (strcmp(argv
[i
], "ies") == 0) {
116 } else if (strcmp(argv
[i
], "lowpri") == 0) {
118 flags
|= NL80211_SCAN_FLAG_LOW_PRIORITY
;
120 } else if (strcmp(argv
[i
], "flush") == 0) {
122 flags
|= NL80211_SCAN_FLAG_FLUSH
;
124 } else if (strcmp(argv
[i
], "ap-force") == 0) {
126 flags
|= NL80211_SCAN_FLAG_AP
;
128 } else if (strcmp(argv
[i
], "ssid") == 0) {
132 } else if (strcmp(argv
[i
], "passive") == 0) {
140 freq
= strtoul(argv
[i
], &eptr
, 10);
141 if (eptr
!= argv
[i
] + strlen(argv
[i
])) {
142 /* failed to parse as number -- maybe a tag? */
147 NLA_PUT_U32(freqs
, i
, freq
);
150 ies
= parse_hex(argv
[i
], &tmp
);
152 goto nla_put_failure
;
153 NLA_PUT(msg
, NL80211_ATTR_IE
, tmp
, ies
);
158 NLA_PUT(ssids
, i
, strlen(argv
[i
]), argv
[i
]);
164 NLA_PUT(ssids
, 1, 0, "");
166 nla_put_nested(msg
, NL80211_ATTR_SCAN_SSIDS
, ssids
);
169 nla_put_nested(msg
, NL80211_ATTR_SCAN_FREQUENCIES
, freqs
);
171 NLA_PUT_U32(msg
, NL80211_ATTR_SCAN_FLAGS
, flags
);
180 static void tab_on_first(bool *first
)
188 static void print_ssid(const uint8_t type
, uint8_t len
, const uint8_t *data
)
191 print_ssid_escaped(len
, data
);
195 #define BSS_MEMBERSHIP_SELECTOR_VHT_PHY 126
196 #define BSS_MEMBERSHIP_SELECTOR_HT_PHY 127
198 static void print_supprates(const uint8_t type
, uint8_t len
, const uint8_t *data
)
204 for (i
= 0; i
< len
; i
++) {
205 int r
= data
[i
] & 0x7f;
207 if (r
== BSS_MEMBERSHIP_SELECTOR_VHT_PHY
&& data
[i
] & 0x80)
209 else if (r
== BSS_MEMBERSHIP_SELECTOR_HT_PHY
&& data
[i
] & 0x80)
212 printf("%d.%d", r
/2, 5*(r
&1));
214 printf("%s ", data
[i
] & 0x80 ? "*" : "");
219 static void print_ds(const uint8_t type
, uint8_t len
, const uint8_t *data
)
221 printf(" channel %d\n", data
[0]);
224 static const char *country_env_str(char environment
)
226 switch (environment
) {
228 return "Indoor only";
230 return "Outdoor only";
232 return "Indoor/Outdoor";
238 static void print_country(const uint8_t type
, uint8_t len
, const uint8_t *data
)
240 printf(" %.*s", 2, data
);
242 printf("\tEnvironment: %s\n", country_env_str(data
[2]));
248 printf("\t\tNo country IE triplets present\n");
254 union ieee80211_country_ie_triplet
*triplet
= (void *) data
;
256 if (triplet
->ext
.reg_extension_id
>= IEEE80211_COUNTRY_EXTENSION_ID
) {
257 printf("\t\tExtension ID: %d Regulatory Class: %d Coverage class: %d (up to %dm)\n",
258 triplet
->ext
.reg_extension_id
,
259 triplet
->ext
.reg_class
,
260 triplet
->ext
.coverage_class
,
261 triplet
->ext
.coverage_class
* 450);
269 if (triplet
->chans
.first_channel
<= 14)
270 end_channel
= triplet
->chans
.first_channel
+ (triplet
->chans
.num_channels
- 1);
272 end_channel
= triplet
->chans
.first_channel
+ (4 * (triplet
->chans
.num_channels
- 1));
274 printf("\t\tChannels [%d - %d] @ %d dBm\n", triplet
->chans
.first_channel
, end_channel
, triplet
->chans
.max_power
);
283 static void print_powerconstraint(const uint8_t type
, uint8_t len
, const uint8_t *data
)
285 printf(" %d dB\n", data
[0]);
288 static void print_erp(const uint8_t type
, uint8_t len
, const uint8_t *data
)
291 printf(" <no flags>");
293 printf(" NonERP_Present");
295 printf(" Use_Protection");
297 printf(" Barker_Preamble_Mode");
301 static void print_cipher(const uint8_t *data
)
303 if (memcmp(data
, ms_oui
, 3) == 0) {
306 printf("Use group cipher suite");
321 printf("%.02x-%.02x-%.02x:%d",
322 data
[0], data
[1] ,data
[2], data
[3]);
325 } else if (memcmp(data
, ieee80211_oui
, 3) == 0) {
328 printf("Use group cipher suite");
343 printf("AES-128-CMAC");
349 printf("%.02x-%.02x-%.02x:%d",
350 data
[0], data
[1] ,data
[2], data
[3]);
354 printf("%.02x-%.02x-%.02x:%d",
355 data
[0], data
[1] ,data
[2], data
[3]);
358 static void print_auth(const uint8_t *data
)
360 if (memcmp(data
, ms_oui
, 3) == 0) {
363 printf("IEEE 802.1X");
369 printf("%.02x-%.02x-%.02x:%d",
370 data
[0], data
[1] ,data
[2], data
[3]);
373 } else if (memcmp(data
, ieee80211_oui
, 3) == 0) {
376 printf("IEEE 802.1X");
382 printf("FT/IEEE 802.1X");
388 printf("IEEE 802.1X/SHA-256");
391 printf("PSK/SHA-256");
394 printf("%.02x-%.02x-%.02x:%d",
395 data
[0], data
[1] ,data
[2], data
[3]);
399 printf("%.02x-%.02x-%.02x:%d",
400 data
[0], data
[1] ,data
[2], data
[3]);
403 static void print_rsn_ie(const char *defcipher
, const char *defauth
,
404 uint8_t len
, const uint8_t *data
)
407 __u16 version
, count
, capa
;
410 version
= data
[0] + (data
[1] << 8);
411 tab_on_first(&first
);
412 printf("\t * Version: %d\n", version
);
418 tab_on_first(&first
);
419 printf("\t * Group cipher: %s\n", defcipher
);
420 printf("\t * Pairwise ciphers: %s\n", defcipher
);
424 tab_on_first(&first
);
425 printf("\t * Group cipher: ");
433 tab_on_first(&first
);
434 printf("\t * Pairwise ciphers: %s\n", defcipher
);
438 count
= data
[0] | (data
[1] << 8);
439 if (2 + (count
* 4) > len
)
442 tab_on_first(&first
);
443 printf("\t * Pairwise ciphers:");
444 for (i
= 0; i
< count
; i
++) {
446 print_cipher(data
+ 2 + (i
* 4));
450 data
+= 2 + (count
* 4);
451 len
-= 2 + (count
* 4);
454 tab_on_first(&first
);
455 printf("\t * Authentication suites: %s\n", defauth
);
459 count
= data
[0] | (data
[1] << 8);
460 if (2 + (count
* 4) > len
)
463 tab_on_first(&first
);
464 printf("\t * Authentication suites:");
465 for (i
= 0; i
< count
; i
++) {
467 print_auth(data
+ 2 + (i
* 4));
471 data
+= 2 + (count
* 4);
472 len
-= 2 + (count
* 4);
475 capa
= data
[0] | (data
[1] << 8);
476 tab_on_first(&first
);
477 printf("\t * Capabilities:");
481 printf(" NoPairwise");
482 switch ((capa
& 0x000c) >> 2) {
486 printf(" 2-PTKSA-RC");
489 printf(" 4-PTKSA-RC");
492 printf(" 16-PTKSA-RC");
495 switch ((capa
& 0x0030) >> 4) {
499 printf(" 2-GTKSA-RC");
502 printf(" 4-GTKSA-RC");
505 printf(" 16-GTKSA-RC");
509 printf(" MFP-required");
511 printf(" MFP-capable");
513 printf(" Peerkey-enabled");
515 printf(" SPP-AMSDU-capable");
517 printf(" SPP-AMSDU-required");
518 printf(" (0x%.4x)\n", capa
);
524 int pmkid_count
= data
[0] | (data
[1] << 8);
526 if (len
>= 2 + 16 * pmkid_count
) {
527 tab_on_first(&first
);
528 printf("\t * %d PMKIDs\n", pmkid_count
);
529 /* not printing PMKID values */
530 data
+= 2 + 16 * pmkid_count
;
531 len
-= 2 + 16 * pmkid_count
;
537 tab_on_first(&first
);
538 printf("\t * Group mgmt cipher suite: ");
547 printf("\t\t * bogus tail data (%d):", len
);
549 printf(" %.2x", *data
);
557 static void print_rsn(const uint8_t type
, uint8_t len
, const uint8_t *data
)
559 print_rsn_ie("CCMP", "IEEE 802.1X", len
, data
);
562 static void print_ht_capa(const uint8_t type
, uint8_t len
, const uint8_t *data
)
565 print_ht_capability(data
[0] | (data
[1] << 8));
566 print_ampdu_length(data
[2] & 3);
567 print_ampdu_spacing((data
[2] >> 2) & 7);
568 print_ht_mcs(data
+ 3);
571 static const char *ht_secondary_offset
[4] = {
578 static void print_ht_op(const uint8_t type
, uint8_t len
, const uint8_t *data
)
580 static const char *protection
[4] = {
586 static const char *sta_chan_width
[2] = {
592 printf("\t\t * primary channel: %d\n", data
[0]);
593 printf("\t\t * secondary channel offset: %s\n",
594 ht_secondary_offset
[data
[1] & 0x3]);
595 printf("\t\t * STA channel width: %s\n", sta_chan_width
[(data
[1] & 0x4)>>2]);
596 printf("\t\t * RIFS: %d\n", (data
[1] & 0x8)>>3);
597 printf("\t\t * HT protection: %s\n", protection
[data
[2] & 0x3]);
598 printf("\t\t * non-GF present: %d\n", (data
[2] & 0x4) >> 2);
599 printf("\t\t * OBSS non-GF present: %d\n", (data
[2] & 0x10) >> 4);
600 printf("\t\t * dual beacon: %d\n", (data
[4] & 0x40) >> 6);
601 printf("\t\t * dual CTS protection: %d\n", (data
[4] & 0x80) >> 7);
602 printf("\t\t * STBC beacon: %d\n", data
[5] & 0x1);
603 printf("\t\t * L-SIG TXOP Prot: %d\n", (data
[5] & 0x2) >> 1);
604 printf("\t\t * PCO active: %d\n", (data
[5] & 0x4) >> 2);
605 printf("\t\t * PCO phase: %d\n", (data
[5] & 0x8) >> 3);
608 static void print_capabilities(const uint8_t type
, uint8_t len
, const uint8_t *data
)
614 for (i
= 0; i
< len
; i
++) {
617 for (bit
= 0; bit
< 8; bit
++) {
618 if (!(data
[i
] & (1 << bit
)))
626 #define CAPA(bit, name) case bit: printf(" " name); break
628 switch (bit
+ base
) {
629 CAPA(0, "HT Information Exchange Supported");
630 CAPA(1, "reserved (On-demand Beacon)");
631 CAPA(2, "Extended Channel Switching");
632 CAPA(3, "reserved (Wave Indication)");
633 CAPA(4, "PSMP Capability");
634 CAPA(5, "reserved (Service Interval Granularity)");
635 CAPA(6, "S-PSMP Capability");
637 CAPA(8, "Diagnostics");
638 CAPA(9, "Multicast Diagnostics");
639 CAPA(10, "Location Tracking");
641 CAPA(12, "Proxy ARP Service");
642 CAPA(13, "Collocated Interference Reporting");
643 CAPA(14, "Civic Location");
644 CAPA(15, "Geospatial Location");
646 CAPA(17, "WNM-Sleep Mode");
647 CAPA(18, "TIM Broadcast");
648 CAPA(19, "BSS Transition");
649 CAPA(20, "QoS Traffic Capability");
650 CAPA(21, "AC Station Count");
651 CAPA(22, "Multiple BSSID");
652 CAPA(23, "Timing Measurement");
653 CAPA(24, "Channel Usage");
654 CAPA(25, "SSID List");
656 CAPA(27, "UTC TSF Offset");
657 CAPA(28, "TDLS Peer U-APSD Buffer STA Support");
658 CAPA(29, "TDLS Peer PSM Support");
659 CAPA(30, "TDLS channel switching");
660 CAPA(31, "Interworking");
663 CAPA(34, "SSPN Interface");
664 CAPA(35, "Reserved");
665 CAPA(36, "MSGCF Capability");
666 CAPA(37, "TDLS Support");
667 CAPA(38, "TDLS Prohibited");
668 CAPA(39, "TDLS Channel Switching Prohibited");
669 CAPA(40, "Reject Unadmitted Frame");
670 CAPA(44, "Identifier Location");
671 CAPA(45, "U-APSD Coexistence");
672 CAPA(46, "WNM-Notification");
673 CAPA(47, "Reserved");
674 CAPA(48, "UTF-8 SSID");
686 static void print_tim(const uint8_t type
, uint8_t len
, const uint8_t *data
)
688 printf(" DTIM Count %u DTIM Period %u Bitmap Control 0x%x "
690 data
[0], data
[1], data
[2], data
[3]);
692 printf(" (+ %u octet%s)", len
- 4, len
- 4 == 1 ? "" : "s");
696 static void print_vht_capa(const uint8_t type
, uint8_t len
, const uint8_t *data
)
699 print_vht_info(data
[0] | (data
[1] << 8) |
700 (data
[2] << 16) | (data
[3] << 24),
704 static void print_vht_oper(const uint8_t type
, uint8_t len
, const uint8_t *data
)
706 const char *chandwidths
[] = {
707 [0] = "20 or 40 MHz",
714 printf("\t\t * channel width: %d (%s)\n", data
[0],
715 data
[0] < ARRAY_SIZE(chandwidths
) ? chandwidths
[data
[0]] : "unknown");
716 printf("\t\t * center freq segment 1: %d\n", data
[1]);
717 printf("\t\t * center freq segment 2: %d\n", data
[2]);
718 printf("\t\t * VHT basic MCS set: 0x%.2x%.2x\n", data
[4], data
[3]);
721 static void print_obss_scan_params(const uint8_t type
, uint8_t len
, const uint8_t *data
)
724 printf("\t\t * passive dwell: %d TUs\n", (data
[1] << 8) | data
[0]);
725 printf("\t\t * active dwell: %d TUs\n", (data
[3] << 8) | data
[2]);
726 printf("\t\t * channel width trigger scan interval: %d s\n", (data
[5] << 8) | data
[4]);
727 printf("\t\t * scan passive total per channel: %d TUs\n", (data
[7] << 8) | data
[6]);
728 printf("\t\t * scan active total per channel: %d TUs\n", (data
[9] << 8) | data
[8]);
729 printf("\t\t * BSS width channel transition delay factor: %d\n", (data
[11] << 8) | data
[10]);
730 printf("\t\t * OBSS Scan Activity Threshold: %d.%02d %%\n",
731 ((data
[13] << 8) | data
[12]) / 100, ((data
[13] << 8) | data
[12]) % 100);
734 static void print_secchan_offs(const uint8_t type
, uint8_t len
, const uint8_t *data
)
736 if (data
[0] < ARRAY_SIZE(ht_secondary_offset
))
737 printf(" %s (%d)\n", ht_secondary_offset
[data
[0]], data
[0]);
739 printf(" %d\n", data
[0]);
742 static void print_bss_load(const uint8_t type
, uint8_t len
, const uint8_t *data
)
745 printf("\t\t * station count: %d\n", (data
[1] << 8) | data
[0]);
746 printf("\t\t * channel utilisation: %d/255\n", data
[2]);
747 printf("\t\t * available admission capacity: %d [*32us]\n", (data
[4] << 8) | data
[3]);
752 void (*print
)(const uint8_t type
, uint8_t len
, const uint8_t *data
);
753 uint8_t minlen
, maxlen
;
757 static void print_ie(const struct ie_print
*p
, const uint8_t type
,
758 uint8_t len
, const uint8_t *data
)
765 printf("\t%s:", p
->name
);
766 if (len
< p
->minlen
|| len
> p
->maxlen
) {
768 printf(" <invalid: %d bytes:", len
);
769 for (i
= 0; i
< len
; i
++)
770 printf(" %.02x", data
[i
]);
773 printf(" <invalid: 1 byte: %.02x>\n", data
[0]);
775 printf(" <invalid: no data>\n");
779 p
->print(type
, len
, data
);
782 #define PRINT_IGN { \
789 static const struct ie_print ieprinters
[] = {
790 [0] = { "SSID", print_ssid
, 0, 32, BIT(PRINT_SCAN
) | BIT(PRINT_LINK
), },
791 [1] = { "Supported rates", print_supprates
, 0, 255, BIT(PRINT_SCAN
), },
792 [3] = { "DS Parameter set", print_ds
, 1, 1, BIT(PRINT_SCAN
), },
793 [5] = { "TIM", print_tim
, 4, 255, BIT(PRINT_SCAN
), },
794 [7] = { "Country", print_country
, 3, 255, BIT(PRINT_SCAN
), },
795 [11] = { "BSS Load", print_bss_load
, 5, 5, BIT(PRINT_SCAN
), },
796 [32] = { "Power constraint", print_powerconstraint
, 1, 1, BIT(PRINT_SCAN
), },
797 [42] = { "ERP", print_erp
, 1, 255, BIT(PRINT_SCAN
), },
798 [45] = { "HT capabilities", print_ht_capa
, 26, 26, BIT(PRINT_SCAN
), },
799 [74] = { "Overlapping BSS scan params", print_obss_scan_params
, 14, 255, BIT(PRINT_SCAN
), },
800 [61] = { "HT operation", print_ht_op
, 22, 22, BIT(PRINT_SCAN
), },
801 [62] = { "Secondary Channel Offset", print_secchan_offs
, 1, 1, BIT(PRINT_SCAN
), },
802 [191] = { "VHT capabilities", print_vht_capa
, 12, 255, BIT(PRINT_SCAN
), },
803 [192] = { "VHT operation", print_vht_oper
, 5, 255, BIT(PRINT_SCAN
), },
804 [48] = { "RSN", print_rsn
, 2, 255, BIT(PRINT_SCAN
), },
805 [50] = { "Extended supported rates", print_supprates
, 0, 255, BIT(PRINT_SCAN
), },
806 [114] = { "MESH ID", print_ssid
, 0, 32, BIT(PRINT_SCAN
) | BIT(PRINT_LINK
), },
807 [127] = { "Extended capabilities", print_capabilities
, 0, 255, BIT(PRINT_SCAN
), },
810 static void print_wifi_wpa(const uint8_t type
, uint8_t len
, const uint8_t *data
)
812 print_rsn_ie("TKIP", "IEEE 802.1X", len
, data
);
815 static bool print_wifi_wmm_param(const uint8_t *data
, uint8_t len
)
818 static const char *aci_tbl
[] = { "BE", "BK", "VI", "VO" };
824 printf("Parameter: not version 1: ");
828 printf("\t * Parameter version 1");
833 printf("\n\t\t * u-APSD");
837 for (i
= 0; i
< 4; i
++) {
838 printf("\n\t\t * %s:", aci_tbl
[(data
[0] >> 5) & 3]);
841 printf(" CW %d-%d", (1 << (data
[1] & 0xf)) - 1,
842 (1 << (data
[1] >> 4)) - 1);
843 printf(", AIFSN %d", data
[0] & 0xf);
844 if (data
[2] | data
[3])
845 printf(", TXOP %d usec", (data
[2] + (data
[3] << 8)) * 32);
857 static void print_wifi_wmm(const uint8_t type
, uint8_t len
, const uint8_t *data
)
863 printf(" information:");
866 if (print_wifi_wmm_param(data
+ 1, len
- 1))
870 printf(" type %d:", data
[0]);
874 for(i
= 1; i
< len
; i
++)
875 printf(" %.02x", data
[i
]);
879 static const char * wifi_wps_dev_passwd_id(uint16_t id
)
883 return "Default (PIN)";
885 return "User-specified";
887 return "Machine-specified";
893 return "Registrar-specified";
899 static void print_wifi_wps(const uint8_t type
, uint8_t len
, const uint8_t *data
)
902 __u16 subtype
, sublen
;
905 subtype
= (data
[0] << 8) + data
[1];
906 sublen
= (data
[2] << 8) + data
[3];
912 tab_on_first(&first
);
913 printf("\t * Version: %d.%d\n", data
[4] >> 4, data
[4] & 0xF);
916 tab_on_first(&first
);
917 printf("\t * Device name: %.*s\n", sublen
, data
+ 4);
921 tab_on_first(&first
);
923 printf("\t * Device Password ID: (invalid "
924 "length %d)\n", sublen
);
927 id
= data
[4] << 8 | data
[5];
928 printf("\t * Device Password ID: %u (%s)\n",
929 id
, wifi_wps_dev_passwd_id(id
));
933 tab_on_first(&first
);
934 printf("\t * Manufacturer: %.*s\n", sublen
, data
+ 4);
937 tab_on_first(&first
);
938 printf("\t * Model: %.*s\n", sublen
, data
+ 4);
941 tab_on_first(&first
);
942 printf("\t * Model Number: %.*s\n", sublen
, data
+ 4);
946 tab_on_first(&first
);
947 printf("\t * Response Type: %d%s\n",
948 val
, val
== 3 ? " (AP)" : "");
953 tab_on_first(&first
);
954 printf("\t * RF Bands: 0x%x\n", val
);
959 tab_on_first(&first
);
960 printf("\t * Selected Registrar: 0x%x\n", val
);
964 tab_on_first(&first
);
965 printf("\t * Serial Number: %.*s\n", sublen
, data
+ 4);
969 tab_on_first(&first
);
970 printf("\t * Wi-Fi Protected Setup State: %d%s%s\n",
972 val
== 1 ? " (Unconfigured)" : "",
973 val
== 2 ? " (Configured)" : "");
977 tab_on_first(&first
);
978 printf("\t * UUID: ");
980 printf("(invalid, length=%d)\n", sublen
);
983 printf("%02x%02x%02x%02x-%02x%02x-%02x%02x-"
984 "%02x%02x-%02x%02x%02x%02x%02x%02x\n",
985 data
[4], data
[5], data
[6], data
[7],
986 data
[8], data
[9], data
[10], data
[11],
987 data
[12], data
[13], data
[14], data
[15],
988 data
[16], data
[17], data
[18], data
[19]);
991 tab_on_first(&first
);
993 printf("\t * Primary Device Type: (invalid "
994 "length %d)\n", sublen
);
997 printf("\t * Primary Device Type: "
998 "%u-%02x%02x%02x%02x-%u\n",
999 data
[4] << 8 | data
[5],
1000 data
[6], data
[7], data
[8], data
[9],
1001 data
[10] << 8 | data
[11]);
1006 tab_on_first(&first
);
1007 printf("\t * AP setup locked: 0x%.2x\n", val
);
1012 __u16 meth
= (data
[4] << 8) + data
[5];
1014 tab_on_first(&first
);
1015 printf("\t * %sConfig methods:",
1016 subtype
== 0x1053 ? "Selected Registrar ": "");
1017 #define T(bit, name) do { \
1018 if (meth & (1<<bit)) { \
1038 const __u8
*subdata
= data
+ 4;
1039 __u16 tmplen
= sublen
;
1041 tab_on_first(&first
);
1042 printf("\t * Unknown TLV (%#.4x, %d bytes):",
1045 printf(" %.2x", *subdata
);
1059 printf("\t\t * bogus tail data (%d):", len
);
1061 printf(" %.2x", *data
);
1069 static const struct ie_print wifiprinters
[] = {
1070 [1] = { "WPA", print_wifi_wpa
, 2, 255, BIT(PRINT_SCAN
), },
1071 [2] = { "WMM", print_wifi_wmm
, 1, 255, BIT(PRINT_SCAN
), },
1072 [4] = { "WPS", print_wifi_wps
, 0, 255, BIT(PRINT_SCAN
), },
1075 static inline void print_p2p(const uint8_t type
, uint8_t len
, const uint8_t *data
)
1083 sublen
= (data
[2] << 8) + data
[1];
1085 if (sublen
> len
- 3)
1089 case 0x02: /* capability */
1090 tab_on_first(&first
);
1092 printf("\t * malformed capability\n");
1095 printf("\t * Group capa: 0x%.2x, Device capa: 0x%.2x\n",
1098 case 0x0d: /* device info */
1099 if (sublen
< 6 + 2 + 8 + 1) {
1100 printf("\t * malformed device info\n");
1103 /* fall through for now */
1104 case 0x00: /* status */
1105 case 0x01: /* minor reason */
1106 case 0x03: /* device ID */
1107 case 0x04: /* GO intent */
1108 case 0x05: /* configuration timeout */
1109 case 0x06: /* listen channel */
1110 case 0x07: /* group BSSID */
1111 case 0x08: /* ext listen timing */
1112 case 0x09: /* intended interface address */
1113 case 0x0a: /* manageability */
1114 case 0x0b: /* channel list */
1115 case 0x0c: /* NoA */
1116 case 0x0e: /* group info */
1117 case 0x0f: /* group ID */
1118 case 0x10: /* interface */
1119 case 0x11: /* operating channel */
1120 case 0x12: /* invitation flags */
1121 case 0xdd: /* vendor specific */
1123 const __u8
*subdata
= data
+ 4;
1124 __u16 tmplen
= sublen
;
1126 tab_on_first(&first
);
1127 printf("\t * Unknown TLV (%#.2x, %d bytes):",
1130 printf(" %.2x", *subdata
);
1144 tab_on_first(&first
);
1145 printf("\t * bogus tail data (%d):", len
);
1147 printf(" %.2x", *data
);
1155 static const struct ie_print wfa_printers
[] = {
1156 [9] = { "P2P", print_p2p
, 2, 255, BIT(PRINT_SCAN
), },
1159 static void print_vendor(unsigned char len
, unsigned char *data
,
1160 bool unknown
, enum print_ie_type ptype
)
1165 printf("\tVendor specific: <too short> data:");
1166 for(i
= 0; i
< len
; i
++)
1167 printf(" %.02x", data
[i
]);
1172 if (len
>= 4 && memcmp(data
, ms_oui
, 3) == 0) {
1173 if (data
[3] < ARRAY_SIZE(wifiprinters
) &&
1174 wifiprinters
[data
[3]].name
&&
1175 wifiprinters
[data
[3]].flags
& BIT(ptype
)) {
1176 print_ie(&wifiprinters
[data
[3]], data
[3], len
- 4, data
+ 4);
1181 printf("\tMS/WiFi %#.2x, data:", data
[3]);
1182 for(i
= 0; i
< len
- 4; i
++)
1183 printf(" %.02x", data
[i
+ 4]);
1188 if (len
>= 4 && memcmp(data
, wfa_oui
, 3) == 0) {
1189 if (data
[3] < ARRAY_SIZE(wfa_printers
) &&
1190 wfa_printers
[data
[3]].name
&&
1191 wfa_printers
[data
[3]].flags
& BIT(ptype
)) {
1192 print_ie(&wfa_printers
[data
[3]], data
[3], len
- 4, data
+ 4);
1197 printf("\tWFA %#.2x, data:", data
[3]);
1198 for(i
= 0; i
< len
- 4; i
++)
1199 printf(" %.02x", data
[i
+ 4]);
1207 printf("\tVendor specific: OUI %.2x:%.2x:%.2x, data:",
1208 data
[0], data
[1], data
[2]);
1209 for (i
= 3; i
< len
; i
++)
1210 printf(" %.2x", data
[i
]);
1214 void print_ies(unsigned char *ie
, int ielen
, bool unknown
,
1215 enum print_ie_type ptype
)
1217 while (ielen
>= 2 && ielen
>= ie
[1]) {
1218 if (ie
[0] < ARRAY_SIZE(ieprinters
) &&
1219 ieprinters
[ie
[0]].name
&&
1220 ieprinters
[ie
[0]].flags
& BIT(ptype
)) {
1221 print_ie(&ieprinters
[ie
[0]], ie
[0], ie
[1], ie
+ 2);
1222 } else if (ie
[0] == 221 /* vendor */) {
1223 print_vendor(ie
[1], ie
+ 2, unknown
, ptype
);
1224 } else if (unknown
) {
1227 printf("\tUnknown IE (%d):", ie
[0]);
1228 for (i
=0; i
<ie
[1]; i
++)
1229 printf(" %.2x", ie
[2+i
]);
1237 static void print_capa_dmg(__u16 capa
)
1239 switch (capa
& WLAN_CAPABILITY_DMG_TYPE_MASK
) {
1240 case WLAN_CAPABILITY_DMG_TYPE_AP
:
1243 case WLAN_CAPABILITY_DMG_TYPE_PBSS
:
1246 case WLAN_CAPABILITY_DMG_TYPE_IBSS
:
1247 printf(" DMG_IBSS");
1251 if (capa
& WLAN_CAPABILITY_DMG_CBAP_ONLY
)
1252 printf(" CBAP_Only");
1253 if (capa
& WLAN_CAPABILITY_DMG_CBAP_SOURCE
)
1254 printf(" CBAP_Src");
1255 if (capa
& WLAN_CAPABILITY_DMG_PRIVACY
)
1257 if (capa
& WLAN_CAPABILITY_DMG_ECPAC
)
1259 if (capa
& WLAN_CAPABILITY_DMG_SPECTRUM_MGMT
)
1260 printf(" SpectrumMgmt");
1261 if (capa
& WLAN_CAPABILITY_DMG_RADIO_MEASURE
)
1262 printf(" RadioMeasure");
1265 static void print_capa_non_dmg(__u16 capa
)
1267 if (capa
& WLAN_CAPABILITY_ESS
)
1269 if (capa
& WLAN_CAPABILITY_IBSS
)
1271 if (capa
& WLAN_CAPABILITY_CF_POLLABLE
)
1272 printf(" CfPollable");
1273 if (capa
& WLAN_CAPABILITY_CF_POLL_REQUEST
)
1274 printf(" CfPollReq");
1275 if (capa
& WLAN_CAPABILITY_PRIVACY
)
1277 if (capa
& WLAN_CAPABILITY_SHORT_PREAMBLE
)
1278 printf(" ShortPreamble");
1279 if (capa
& WLAN_CAPABILITY_PBCC
)
1281 if (capa
& WLAN_CAPABILITY_CHANNEL_AGILITY
)
1282 printf(" ChannelAgility");
1283 if (capa
& WLAN_CAPABILITY_SPECTRUM_MGMT
)
1284 printf(" SpectrumMgmt");
1285 if (capa
& WLAN_CAPABILITY_QOS
)
1287 if (capa
& WLAN_CAPABILITY_SHORT_SLOT_TIME
)
1288 printf(" ShortSlotTime");
1289 if (capa
& WLAN_CAPABILITY_APSD
)
1291 if (capa
& WLAN_CAPABILITY_RADIO_MEASURE
)
1292 printf(" RadioMeasure");
1293 if (capa
& WLAN_CAPABILITY_DSSS_OFDM
)
1294 printf(" DSSS-OFDM");
1295 if (capa
& WLAN_CAPABILITY_DEL_BACK
)
1296 printf(" DelayedBACK");
1297 if (capa
& WLAN_CAPABILITY_IMM_BACK
)
1298 printf(" ImmediateBACK");
1301 static int print_bss_handler(struct nl_msg
*msg
, void *arg
)
1303 struct nlattr
*tb
[NL80211_ATTR_MAX
+ 1];
1304 struct genlmsghdr
*gnlh
= nlmsg_data(nlmsg_hdr(msg
));
1305 struct nlattr
*bss
[NL80211_BSS_MAX
+ 1];
1306 char mac_addr
[20], dev
[20];
1307 static struct nla_policy bss_policy
[NL80211_BSS_MAX
+ 1] = {
1308 [NL80211_BSS_TSF
] = { .type
= NLA_U64
},
1309 [NL80211_BSS_FREQUENCY
] = { .type
= NLA_U32
},
1310 [NL80211_BSS_BSSID
] = { },
1311 [NL80211_BSS_BEACON_INTERVAL
] = { .type
= NLA_U16
},
1312 [NL80211_BSS_CAPABILITY
] = { .type
= NLA_U16
},
1313 [NL80211_BSS_INFORMATION_ELEMENTS
] = { },
1314 [NL80211_BSS_SIGNAL_MBM
] = { .type
= NLA_U32
},
1315 [NL80211_BSS_SIGNAL_UNSPEC
] = { .type
= NLA_U8
},
1316 [NL80211_BSS_STATUS
] = { .type
= NLA_U32
},
1317 [NL80211_BSS_SEEN_MS_AGO
] = { .type
= NLA_U32
},
1318 [NL80211_BSS_BEACON_IES
] = { },
1320 struct scan_params
*params
= arg
;
1321 int show
= params
->show_both_ie_sets
? 2 : 1;
1322 bool is_dmg
= false;
1324 nla_parse(tb
, NL80211_ATTR_MAX
, genlmsg_attrdata(gnlh
, 0),
1325 genlmsg_attrlen(gnlh
, 0), NULL
);
1327 if (!tb
[NL80211_ATTR_BSS
]) {
1328 fprintf(stderr
, "bss info missing!\n");
1331 if (nla_parse_nested(bss
, NL80211_BSS_MAX
,
1332 tb
[NL80211_ATTR_BSS
],
1334 fprintf(stderr
, "failed to parse nested attributes!\n");
1338 if (!bss
[NL80211_BSS_BSSID
])
1341 mac_addr_n2a(mac_addr
, nla_data(bss
[NL80211_BSS_BSSID
]));
1342 if_indextoname(nla_get_u32(tb
[NL80211_ATTR_IFINDEX
]), dev
);
1343 printf("BSS %s (on %s)", mac_addr
, dev
);
1345 if (bss
[NL80211_BSS_STATUS
]) {
1346 switch (nla_get_u32(bss
[NL80211_BSS_STATUS
])) {
1347 case NL80211_BSS_STATUS_AUTHENTICATED
:
1348 printf(" -- authenticated");
1350 case NL80211_BSS_STATUS_ASSOCIATED
:
1351 printf(" -- associated");
1353 case NL80211_BSS_STATUS_IBSS_JOINED
:
1354 printf(" -- joined");
1357 printf(" -- unknown status: %d",
1358 nla_get_u32(bss
[NL80211_BSS_STATUS
]));
1364 if (bss
[NL80211_BSS_TSF
]) {
1365 unsigned long long tsf
;
1366 tsf
= (unsigned long long)nla_get_u64(bss
[NL80211_BSS_TSF
]);
1367 printf("\tTSF: %llu usec (%llud, %.2lld:%.2llu:%.2llu)\n",
1368 tsf
, tsf
/1000/1000/60/60/24, (tsf
/1000/1000/60/60) % 24,
1369 (tsf
/1000/1000/60) % 60, (tsf
/1000/1000) % 60);
1371 if (bss
[NL80211_BSS_FREQUENCY
]) {
1372 int freq
= nla_get_u32(bss
[NL80211_BSS_FREQUENCY
]);
1373 printf("\tfreq: %d\n", freq
);
1377 if (bss
[NL80211_BSS_BEACON_INTERVAL
])
1378 printf("\tbeacon interval: %d\n",
1379 nla_get_u16(bss
[NL80211_BSS_BEACON_INTERVAL
]));
1380 if (bss
[NL80211_BSS_CAPABILITY
]) {
1381 __u16 capa
= nla_get_u16(bss
[NL80211_BSS_CAPABILITY
]);
1382 printf("\tcapability:");
1384 print_capa_dmg(capa
);
1386 print_capa_non_dmg(capa
);
1387 printf(" (0x%.4x)\n", capa
);
1389 if (bss
[NL80211_BSS_SIGNAL_MBM
]) {
1390 int s
= nla_get_u32(bss
[NL80211_BSS_SIGNAL_MBM
]);
1391 printf("\tsignal: %d.%.2d dBm\n", s
/100, s
%100);
1393 if (bss
[NL80211_BSS_SIGNAL_UNSPEC
]) {
1394 unsigned char s
= nla_get_u8(bss
[NL80211_BSS_SIGNAL_UNSPEC
]);
1395 printf("\tsignal: %d/100\n", s
);
1397 if (bss
[NL80211_BSS_SEEN_MS_AGO
]) {
1398 int age
= nla_get_u32(bss
[NL80211_BSS_SEEN_MS_AGO
]);
1399 printf("\tlast seen: %d ms ago\n", age
);
1402 if (bss
[NL80211_BSS_INFORMATION_ELEMENTS
] && show
--) {
1403 if (bss
[NL80211_BSS_BEACON_IES
])
1404 printf("\tInformation elements from Probe Response "
1406 print_ies(nla_data(bss
[NL80211_BSS_INFORMATION_ELEMENTS
]),
1407 nla_len(bss
[NL80211_BSS_INFORMATION_ELEMENTS
]),
1408 params
->unknown
, params
->type
);
1410 if (bss
[NL80211_BSS_BEACON_IES
] && show
--) {
1411 printf("\tInformation elements from Beacon frame:\n");
1412 print_ies(nla_data(bss
[NL80211_BSS_BEACON_IES
]),
1413 nla_len(bss
[NL80211_BSS_BEACON_IES
]),
1414 params
->unknown
, params
->type
);
1420 static struct scan_params scan_params
;
1422 static int handle_scan_dump(struct nl80211_state
*state
,
1425 int argc
, char **argv
,
1431 memset(&scan_params
, 0, sizeof(scan_params
));
1433 if (argc
== 1 && !strcmp(argv
[0], "-u"))
1434 scan_params
.unknown
= true;
1435 else if (argc
== 1 && !strcmp(argv
[0], "-b"))
1436 scan_params
.show_both_ie_sets
= true;
1438 scan_params
.type
= PRINT_SCAN
;
1440 nl_cb_set(cb
, NL_CB_VALID
, NL_CB_CUSTOM
, print_bss_handler
,
1445 static int handle_scan_combined(struct nl80211_state
*state
,
1448 int argc
, char **argv
,
1452 static char *dump_argv
[] = {
1458 static const __u32 cmds
[] = {
1459 NL80211_CMD_NEW_SCAN_RESULTS
,
1460 NL80211_CMD_SCAN_ABORTED
,
1462 int trig_argc
, dump_argc
, err
;
1464 if (argc
>= 3 && !strcmp(argv
[2], "-u")) {
1466 dump_argv
[3] = "-u";
1467 } else if (argc
>= 3 && !strcmp(argv
[2], "-b")) {
1469 dump_argv
[3] = "-b";
1473 trig_argc
= 3 + (argc
- 2) + (3 - dump_argc
);
1474 trig_argv
= calloc(trig_argc
, sizeof(*trig_argv
));
1477 trig_argv
[0] = argv
[0];
1478 trig_argv
[1] = "scan";
1479 trig_argv
[2] = "trigger";
1481 for (i
= 0; i
< argc
- 2 - (dump_argc
- 3); i
++)
1482 trig_argv
[i
+ 3] = argv
[i
+ 2 + (dump_argc
- 3)];
1483 err
= handle_cmd(state
, id
, trig_argc
, trig_argv
);
1489 * WARNING: DO NOT COPY THIS CODE INTO YOUR APPLICATION
1491 * This code has a bug, which requires creating a separate
1492 * nl80211 socket to fix:
1493 * It is possible for a NL80211_CMD_NEW_SCAN_RESULTS or
1494 * NL80211_CMD_SCAN_ABORTED message to be sent by the kernel
1495 * before (!) we listen to it, because we only start listening
1496 * after we send our scan request.
1498 * Doing it the other way around has a race condition as well,
1499 * if you first open the events socket you may get a notification
1500 * for a previous scan.
1502 * The only proper way to fix this would be to listen to events
1503 * before sending the command, and for the kernel to send the
1504 * scan request along with the event, so that you can match up
1505 * whether the scan you requested was finished or aborted (this
1506 * may result in processing a scan that another application
1507 * requested, but that doesn't seem to be a problem).
1509 * Alas, the kernel doesn't do that (yet).
1512 if (listen_events(state
, ARRAY_SIZE(cmds
), cmds
) ==
1513 NL80211_CMD_SCAN_ABORTED
) {
1514 printf("scan aborted!\n");
1518 dump_argv
[0] = argv
[0];
1519 return handle_cmd(state
, id
, dump_argc
, dump_argv
);
1521 TOPLEVEL(scan
, "[-u] [freq <freq>*] [ies <hex as 00:11:..>] [lowpri,flush,ap-force] [ssid <ssid>*|passive]", 0, 0,
1522 CIB_NETDEV
, handle_scan_combined
,
1523 "Scan on the given frequencies and probe for the given SSIDs\n"
1524 "(or wildcard if not given) unless passive scanning is requested.\n"
1525 "If -u is specified print unknown data in the scan results.\n"
1526 "Specified (vendor) IEs must be well-formed.");
1527 COMMAND(scan
, dump
, "[-u]",
1528 NL80211_CMD_GET_SCAN
, NLM_F_DUMP
, CIB_NETDEV
, handle_scan_dump
,
1529 "Dump the current scan results. If -u is specified, print unknown\n"
1530 "data in scan results.");
1531 COMMAND(scan
, trigger
, "[freq <freq>*] [ies <hex as 00:11:..>] [lowpri,flush,ap-force] [ssid <ssid>*|passive]",
1532 NL80211_CMD_TRIGGER_SCAN
, 0, CIB_NETDEV
, handle_scan
,
1533 "Trigger a scan on the given frequencies with probing for the given\n"
1534 "SSIDs (or wildcard if not given) unless passive scanning is requested.");