2 * iwinfo - Wireless Information Library - Shared utility routines
4 * Copyright (C) 2010 Jo-Philipp Wich <xm@subsignal.org>
6 * The iwinfo library is free software: you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License version 2
8 * as published by the Free Software Foundation.
10 * The iwinfo library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
13 * See the GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License along
16 * with the iwinfo library. If not, see http://www.gnu.org/licenses/.
18 * The signal handling code is derived from the official madwifi tools,
19 * wlanconfig.c in particular. The encryption property handling was
20 * inspired by the hostapd madwifi driver.
23 #include "iwinfo/utils.h"
26 static int ioctl_socket
= -1;
27 struct uci_context
*uci_ctx
= NULL
;
29 static int iwinfo_ioctl_socket(void)
32 if (ioctl_socket
== -1)
34 ioctl_socket
= socket(AF_INET
, SOCK_DGRAM
, 0);
35 fcntl(ioctl_socket
, F_SETFD
, fcntl(ioctl_socket
, F_GETFD
) | FD_CLOEXEC
);
41 int iwinfo_ioctl(int cmd
, void *ifr
)
43 int s
= iwinfo_ioctl_socket();
44 return ioctl(s
, cmd
, ifr
);
47 int iwinfo_dbm2mw(int in
)
54 for(k
= 0; k
< ip
; k
++) res
*= 10;
55 for(k
= 0; k
< fp
; k
++) res
*= LOG10_MAGIC
;
60 int iwinfo_mw2dbm(int in
)
62 double fin
= (double) in
;
80 static int iwinfo_bit(int value
, int max
)
84 if (max
> 31 || !(value
& ((1 << max
) - 1)))
87 for (i
= 0; i
< max
; i
++)
98 static const char * const iwinfo_name(int mask
, int max
, const char * const names
[])
100 int index
= iwinfo_bit(mask
, max
);
108 const char * const iwinfo_band_name(int mask
)
110 return iwinfo_name(mask
, IWINFO_BAND_COUNT
, IWINFO_BAND_NAMES
);
113 const char * const iwinfo_htmode_name(int mask
)
115 return iwinfo_name(mask
, IWINFO_HTMODE_COUNT
, IWINFO_HTMODE_NAMES
);
118 uint32_t iwinfo_band2ghz(uint8_t band
)
135 uint8_t iwinfo_ghz2band(uint32_t ghz
)
140 return IWINFO_BAND_24
;
142 return IWINFO_BAND_5
;
144 return IWINFO_BAND_6
;
146 return IWINFO_BAND_60
;
152 size_t iwinfo_format_hwmodes(int modes
, char *buf
, size_t len
)
154 // bit numbers as per IWINFO_80211_*: ad ac ax a b g n
155 const int order
[IWINFO_80211_COUNT
] = { 5, 4, 6, 0, 1, 2, 3 };
161 if (!(modes
& ((1 << IWINFO_80211_COUNT
) - 1)))
164 for (i
= 0; i
< IWINFO_80211_COUNT
; i
++)
165 if (modes
& 1 << order
[i
])
166 res
+= snprintf(buf
+ res
, len
- res
, "%s/", IWINFO_80211_NAMES
[order
[i
]]);
177 int iwinfo_htmode_is_ht(int htmode
)
181 case IWINFO_HTMODE_HT20
:
182 case IWINFO_HTMODE_HT40
:
189 int iwinfo_htmode_is_vht(int htmode
)
193 case IWINFO_HTMODE_VHT20
:
194 case IWINFO_HTMODE_VHT40
:
195 case IWINFO_HTMODE_VHT80
:
196 case IWINFO_HTMODE_VHT80_80
:
197 case IWINFO_HTMODE_VHT160
:
204 int iwinfo_htmode_is_he(int htmode
)
208 case IWINFO_HTMODE_HE20
:
209 case IWINFO_HTMODE_HE40
:
210 case IWINFO_HTMODE_HE80
:
211 case IWINFO_HTMODE_HE80_80
:
212 case IWINFO_HTMODE_HE160
:
219 int iwinfo_ifup(const char *ifname
)
223 strncpy(ifr
.ifr_name
, ifname
, IFNAMSIZ
- 1);
225 if (iwinfo_ioctl(SIOCGIFFLAGS
, &ifr
))
228 ifr
.ifr_flags
|= (IFF_UP
| IFF_RUNNING
);
230 return !iwinfo_ioctl(SIOCSIFFLAGS
, &ifr
);
233 int iwinfo_ifdown(const char *ifname
)
237 strncpy(ifr
.ifr_name
, ifname
, IFNAMSIZ
- 1);
239 if (iwinfo_ioctl(SIOCGIFFLAGS
, &ifr
))
242 ifr
.ifr_flags
&= ~(IFF_UP
| IFF_RUNNING
);
244 return !iwinfo_ioctl(SIOCSIFFLAGS
, &ifr
);
247 int iwinfo_ifmac(const char *ifname
)
251 strncpy(ifr
.ifr_name
, ifname
, IFNAMSIZ
- 1);
253 if (iwinfo_ioctl(SIOCGIFHWADDR
, &ifr
))
256 ifr
.ifr_hwaddr
.sa_data
[0] |= 0x02;
257 ifr
.ifr_hwaddr
.sa_data
[1]++;
258 ifr
.ifr_hwaddr
.sa_data
[2]++;
260 return !iwinfo_ioctl(SIOCSIFHWADDR
, &ifr
);
263 void iwinfo_close(void)
265 if (ioctl_socket
> -1)
271 struct iwinfo_hardware_entry
* iwinfo_hardware(struct iwinfo_hardware_id
*id
)
274 char buf
[256] = { 0 };
275 static struct iwinfo_hardware_entry e
;
276 struct iwinfo_hardware_entry
*rv
= NULL
;
278 if (!(db
= fopen(IWINFO_HARDWARE_FILE
, "r")))
281 while (fgets(buf
, sizeof(buf
) - 1, db
) != NULL
)
286 memset(&e
, 0, sizeof(e
));
288 if (sscanf(buf
, "%hx %hx %hx %hx %hd %hd \"%63[^\"]\" \"%63[^\"]\"",
289 &e
.vendor_id
, &e
.device_id
,
290 &e
.subsystem_vendor_id
, &e
.subsystem_device_id
,
291 &e
.txpower_offset
, &e
.frequency_offset
,
292 e
.vendor_name
, e
.device_name
) != 8 &&
293 sscanf(buf
, "\"%127[^\"]\" %hd %hd \"%63[^\"]\" \"%63[^\"]\"",
294 e
.compatible
, &e
.txpower_offset
, &e
.frequency_offset
,
295 e
.vendor_name
, e
.device_name
) != 5)
298 if ((e
.vendor_id
!= 0xffff) && (e
.vendor_id
!= id
->vendor_id
))
301 if ((e
.device_id
!= 0xffff) && (e
.device_id
!= id
->device_id
))
304 if ((e
.subsystem_vendor_id
!= 0xffff) &&
305 (e
.subsystem_vendor_id
!= id
->subsystem_vendor_id
))
308 if ((e
.subsystem_device_id
!= 0xffff) &&
309 (e
.subsystem_device_id
!= id
->subsystem_device_id
))
312 if (strcmp(e
.compatible
, id
->compatible
))
323 int iwinfo_hardware_id_from_mtd(struct iwinfo_hardware_id
*id
)
332 if (!(mtd
= fopen("/proc/mtd", "r")))
335 while (fgets(buf
, sizeof(buf
), mtd
) != NULL
)
337 if (fscanf(mtd
, "mtd%d: %x %*x %127s", &off
, &len
, buf
) < 3 ||
338 (strcmp(buf
, "\"boardconfig\"") && strcmp(buf
, "\"EEPROM\"") &&
339 strcmp(buf
, "\"factory\"")))
353 snprintf(buf
, sizeof(buf
), "/dev/mtdblock%d", off
);
355 if ((fd
= open(buf
, O_RDONLY
)) < 0)
358 bc
= mmap(NULL
, len
, PROT_READ
, MAP_PRIVATE
|MAP_LOCKED
, fd
, 0);
360 if ((void *)bc
!= MAP_FAILED
)
365 for (off
= len
/ 2 - 0x800; off
>= 0; off
-= 0x800)
367 /* AR531X board data magic */
368 if ((bc
[off
] == 0x3533) && (bc
[off
+ 1] == 0x3131))
370 id
->vendor_id
= bc
[off
+ 0x7d];
371 id
->device_id
= bc
[off
+ 0x7c];
372 id
->subsystem_vendor_id
= bc
[off
+ 0x84];
373 id
->subsystem_device_id
= bc
[off
+ 0x83];
377 /* AR5416 EEPROM magic */
378 else if ((bc
[off
] == 0xA55A) || (bc
[off
] == 0x5AA5))
380 id
->vendor_id
= bc
[off
+ 0x0D];
381 id
->device_id
= bc
[off
+ 0x0E];
382 id
->subsystem_vendor_id
= bc
[off
+ 0x13];
383 id
->subsystem_device_id
= bc
[off
+ 0x14];
388 else if ((bc
[off
] == 0x3050) || (bc
[off
] == 0x5030) ||
389 (bc
[off
] == 0x3051) || (bc
[off
] == 0x5130) ||
390 (bc
[off
] == 0x3052) || (bc
[off
] == 0x5230) ||
391 (bc
[off
] == 0x3350) || (bc
[off
] == 0x5033) ||
392 (bc
[off
] == 0x3352) || (bc
[off
] == 0x5233) ||
393 (bc
[off
] == 0x3662) || (bc
[off
] == 0x6236) ||
394 (bc
[off
] == 0x3883) || (bc
[off
] == 0x8338) ||
395 (bc
[off
] == 0x5350) || (bc
[off
] == 0x5053))
398 id
->vendor_id
= 0x1814;
399 id
->subsystem_vendor_id
= 0x1814;
402 if (((bc
[off
] & 0xf0) == 0x30) ||
403 ((bc
[off
] & 0xff) == 0x53))
404 id
->device_id
= (bc
[off
] >> 8) | (bc
[off
] & 0x00ff) << 8;
406 id
->device_id
= bc
[off
];
408 /* subsystem from EEPROM_NIC_CONF0_RF_TYPE */
409 id
->subsystem_device_id
= (bc
[off
+ 0x1a] & 0x0f00) >> 8;
410 } else if ((bc
[off
] == 0x7620) || (bc
[off
] == 0x2076) ||
411 (bc
[off
] == 0x7628) || (bc
[off
] == 0x2876) ||
412 (bc
[off
] == 0x7688) || (bc
[off
] == 0x8876)) {
413 /* vendor: MediaTek */
414 id
->vendor_id
= 0x14c3;
415 id
->subsystem_vendor_id
= 0x14c3;
418 if ((bc
[off
] & 0xff) == 0x76)
419 id
->device_id
= (bc
[off
] >> 8) | (bc
[off
] & 0x00ff) << 8;
421 id
->device_id
= bc
[off
];
423 /* subsystem from EEPROM_NIC_CONF0_RF_TYPE */
424 id
->subsystem_device_id
= (bc
[off
+ 0x1a] & 0x0f00) >> 8;
433 return (id
->vendor_id
&& id
->device_id
) ? 0 : -1;
436 static void iwinfo_parse_rsn_cipher(uint8_t idx
, uint16_t *ciphers
)
441 *ciphers
|= IWINFO_CIPHER_NONE
;
445 *ciphers
|= IWINFO_CIPHER_WEP40
;
449 *ciphers
|= IWINFO_CIPHER_TKIP
;
456 *ciphers
|= IWINFO_CIPHER_CCMP
;
460 *ciphers
|= IWINFO_CIPHER_WEP104
;
464 *ciphers
|= IWINFO_CIPHER_GCMP
;
468 *ciphers
|= IWINFO_CIPHER_GCMP256
;
472 *ciphers
|= IWINFO_CIPHER_CCMP256
;
475 case 6: /* AES-128-CMAC */
476 case 7: /* No group addressed */
477 case 11: /* BIP-GMAC-128 */
478 case 12: /* BIP-GMAC-256 */
479 case 13: /* BIP-CMAC-256 */
484 void iwinfo_parse_rsn(struct iwinfo_crypto_entry
*c
, uint8_t *data
, uint8_t len
,
485 uint16_t defcipher
, uint8_t defauth
)
488 uint8_t wpa_version
= 0;
490 static unsigned char ms_oui
[3] = { 0x00, 0x50, 0xf2 };
491 static unsigned char ieee80211_oui
[3] = { 0x00, 0x0f, 0xac };
496 if (!memcmp(data
, ms_oui
, 3))
498 else if (!memcmp(data
, ieee80211_oui
, 3))
503 c
->group_ciphers
|= defcipher
;
504 c
->pair_ciphers
|= defcipher
;
505 c
->auth_suites
|= defauth
;
509 if (!memcmp(data
, ms_oui
, 3) || !memcmp(data
, ieee80211_oui
, 3))
510 iwinfo_parse_rsn_cipher(data
[3], &c
->group_ciphers
);
517 c
->pair_ciphers
|= defcipher
;
518 c
->auth_suites
|= defauth
;
522 count
= data
[0] | (data
[1] << 8);
523 if (2 + (count
* 4) > len
)
526 for (i
= 0; i
< count
; i
++)
527 if (!memcmp(data
+ 2 + (i
* 4), ms_oui
, 3) ||
528 !memcmp(data
+ 2 + (i
* 4), ieee80211_oui
, 3))
529 iwinfo_parse_rsn_cipher(data
[2 + (i
* 4) + 3], &c
->pair_ciphers
);
531 data
+= 2 + (count
* 4);
532 len
-= 2 + (count
* 4);
536 c
->auth_suites
|= defauth
;
540 count
= data
[0] | (data
[1] << 8);
541 if (2 + (count
* 4) > len
)
544 for (i
= 0; i
< count
; i
++)
546 if (!memcmp(data
+ 2 + (i
* 4), ms_oui
, 3) ||
547 !memcmp(data
+ 2 + (i
* 4), ieee80211_oui
, 3))
549 switch (data
[2 + (i
* 4) + 3])
551 case 1: /* IEEE 802.1x */
552 c
->wpa_version
|= wpa_version
;
553 c
->auth_suites
|= IWINFO_KMGMT_8021x
;
557 c
->wpa_version
|= wpa_version
;
558 c
->auth_suites
|= IWINFO_KMGMT_PSK
;
561 case 3: /* FT/IEEE 802.1X */
563 case 5: /* IEEE 802.1X/SHA-256 */
564 case 6: /* PSK/SHA-256 */
565 case 7: /* TPK Handshake */
570 c
->auth_suites
|= IWINFO_KMGMT_SAE
;
574 case 10: /* undefined */
577 case 11: /* 802.1x Suite-B */
578 case 12: /* 802.1x Suite-B-192 */
579 case 13: /* FT/802.1x SHA-384 */
581 c
->auth_suites
|= IWINFO_KMGMT_8021x
;
584 case 14: /* FILS SHA-256 */
585 case 15: /* FILS SHA-384 */
586 case 16: /* FT/FILS SHA-256 */
587 case 17: /* FT/FILS SHA-384 */
592 c
->auth_suites
|= IWINFO_KMGMT_OWE
;
598 data
+= 2 + (count
* 4);
599 len
-= 2 + (count
* 4);
602 struct uci_section
*iwinfo_uci_get_radio(const char *name
, const char *type
)
604 struct uci_ptr ptr
= {
605 .package
= "wireless",
607 .flags
= (name
&& *name
== '@') ? UCI_LOOKUP_EXTENDED
: 0,
612 uci_ctx
= uci_alloc_context();
617 if (uci_lookup_ptr(uci_ctx
, &ptr
, NULL
, true))
620 if (!ptr
.s
|| strcmp(ptr
.s
->type
, "wifi-device") != 0)
623 opt
= uci_lookup_option_string(uci_ctx
, ptr
.s
, "type");
624 if (!opt
|| strcmp(opt
, type
) != 0)
630 void iwinfo_uci_free(void)
635 uci_free_context(uci_ctx
);
640 struct iwinfo_ubus_query_state
{
647 static void iwinfo_ubus_query_cb(struct ubus_request
*req
, int type
,
648 struct blob_attr
*msg
)
650 struct iwinfo_ubus_query_state
*st
= req
->priv
;
652 struct blobmsg_policy pol1
[2] = {
653 { "ifname", BLOBMSG_TYPE_STRING
},
654 { "config", BLOBMSG_TYPE_TABLE
}
657 struct blobmsg_policy pol2
= { st
->field
, BLOBMSG_TYPE_STRING
};
658 struct blob_attr
*cur
, *cur2
, *cur3
, *cfg
[2], *res
;
661 blobmsg_for_each_attr(cur
, msg
, rem
) {
662 if (blobmsg_type(cur
) != BLOBMSG_TYPE_TABLE
)
665 blobmsg_for_each_attr(cur2
, cur
, rem2
) {
666 if (blobmsg_type(cur2
) != BLOBMSG_TYPE_ARRAY
)
669 if (strcmp(blobmsg_name(cur2
), "interfaces"))
672 blobmsg_for_each_attr(cur3
, cur2
, rem3
) {
673 blobmsg_parse(pol1
, sizeof(pol1
) / sizeof(pol1
[0]), cfg
,
674 blobmsg_data(cur3
), blobmsg_len(cur3
));
676 if (!cfg
[0] || !cfg
[1] ||
677 strcmp(blobmsg_get_string(cfg
[0]), st
->ifname
))
680 blobmsg_parse(&pol2
, 1, &res
,
681 blobmsg_data(cfg
[1]), blobmsg_len(cfg
[1]));
686 strncpy(st
->buf
, blobmsg_get_string(res
), st
->len
);
693 int iwinfo_ubus_query(const char *ifname
, const char *field
,
694 char *buf
, size_t len
)
696 struct iwinfo_ubus_query_state st
= {
703 struct ubus_context
*ctx
= NULL
;
704 struct blob_buf b
= { };
708 blob_buf_init(&b
, 0);
710 ctx
= ubus_connect(NULL
);
715 if (ubus_lookup_id(ctx
, "network.wireless", &id
))
718 if (ubus_invoke(ctx
, id
, "status", b
.head
, iwinfo_ubus_query_cb
, &st
, 250))