2 * iwinfo - Wireless Information Library - NL80211 Backend
4 * Copyright (C) 2010-2013 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.
22 * Parts of this code are derived from the Linux iw utility.
26 #include "iwinfo_nl80211.h"
28 #define min(x, y) ((x) < (y)) ? (x) : (y)
30 static struct nl80211_state
*nls
= NULL
;
32 static void nl80211_close(void)
37 genl_family_put(nls
->nlctrl
);
40 genl_family_put(nls
->nl80211
);
43 nl_socket_free(nls
->nl_sock
);
46 nl_cache_free(nls
->nl_cache
);
53 static int nl80211_init(void)
59 nls
= malloc(sizeof(struct nl80211_state
));
65 memset(nls
, 0, sizeof(*nls
));
67 nls
->nl_sock
= nl_socket_alloc();
73 if (genl_connect(nls
->nl_sock
)) {
78 fd
= nl_socket_get_fd(nls
->nl_sock
);
79 if (fcntl(fd
, F_SETFD
, fcntl(fd
, F_GETFD
) | FD_CLOEXEC
) < 0) {
84 if (genl_ctrl_alloc_cache(nls
->nl_sock
, &nls
->nl_cache
)) {
89 nls
->nl80211
= genl_ctrl_search_by_name(nls
->nl_cache
, "nl80211");
95 nls
->nlctrl
= genl_ctrl_search_by_name(nls
->nl_cache
, "nlctrl");
110 static int nl80211_readint(const char *path
)
116 if ((fd
= open(path
, O_RDONLY
)) > -1)
118 if (read(fd
, buffer
, sizeof(buffer
)) > 0)
128 static int nl80211_msg_error(struct sockaddr_nl
*nla
,
129 struct nlmsgerr
*err
, void *arg
)
136 static int nl80211_msg_finish(struct nl_msg
*msg
, void *arg
)
143 static int nl80211_msg_ack(struct nl_msg
*msg
, void *arg
)
150 static int nl80211_msg_response(struct nl_msg
*msg
, void *arg
)
155 static void nl80211_free(struct nl80211_msg_conveyor
*cv
)
170 static struct nl80211_msg_conveyor
* nl80211_new(struct genl_family
*family
,
173 static struct nl80211_msg_conveyor cv
;
175 struct nl_msg
*req
= NULL
;
176 struct nl_cb
*cb
= NULL
;
182 cb
= nl_cb_alloc(NL_CB_DEFAULT
);
186 genlmsg_put(req
, 0, 0, genl_family_get_id(family
), 0, flags
, cmd
, 0);
204 static struct nl80211_msg_conveyor
* nl80211_ctl(int cmd
, int flags
)
206 if (nl80211_init() < 0)
209 return nl80211_new(nls
->nlctrl
, cmd
, flags
);
212 static struct nl80211_msg_conveyor
* nl80211_msg(const char *ifname
,
215 int ifidx
= -1, phyidx
= -1;
216 struct nl80211_msg_conveyor
*cv
;
221 if (nl80211_init() < 0)
224 if (!strncmp(ifname
, "phy", 3))
225 phyidx
= atoi(&ifname
[3]);
226 else if (!strncmp(ifname
, "radio", 5))
227 phyidx
= atoi(&ifname
[5]);
228 else if (!strncmp(ifname
, "mon.", 4))
229 ifidx
= if_nametoindex(&ifname
[4]);
231 ifidx
= if_nametoindex(ifname
);
233 /* Valid ifidx must be greater than 0 */
234 if ((ifidx
<= 0) && (phyidx
< 0))
237 cv
= nl80211_new(nls
->nl80211
, cmd
, flags
);
242 NLA_PUT_U32(cv
->msg
, NL80211_ATTR_IFINDEX
, ifidx
);
245 NLA_PUT_U32(cv
->msg
, NL80211_ATTR_WIPHY
, phyidx
);
254 static struct nl80211_msg_conveyor
* nl80211_send(
255 struct nl80211_msg_conveyor
*cv
,
256 int (*cb_func
)(struct nl_msg
*, void *), void *cb_arg
258 static struct nl80211_msg_conveyor rcv
;
262 nl_cb_set(cv
->cb
, NL_CB_VALID
, NL_CB_CUSTOM
, cb_func
, cb_arg
);
264 nl_cb_set(cv
->cb
, NL_CB_VALID
, NL_CB_CUSTOM
, nl80211_msg_response
, &rcv
);
266 if (nl_send_auto_complete(nls
->nl_sock
, cv
->msg
) < 0)
269 nl_cb_err(cv
->cb
, NL_CB_CUSTOM
, nl80211_msg_error
, &err
);
270 nl_cb_set(cv
->cb
, NL_CB_FINISH
, NL_CB_CUSTOM
, nl80211_msg_finish
, &err
);
271 nl_cb_set(cv
->cb
, NL_CB_ACK
, NL_CB_CUSTOM
, nl80211_msg_ack
, &err
);
274 nl_recvmsgs(nls
->nl_sock
, cv
->cb
);
285 static struct nlattr
** nl80211_parse(struct nl_msg
*msg
)
287 struct genlmsghdr
*gnlh
= nlmsg_data(nlmsg_hdr(msg
));
288 static struct nlattr
*attr
[NL80211_ATTR_MAX
+ 1];
290 nla_parse(attr
, NL80211_ATTR_MAX
, genlmsg_attrdata(gnlh
, 0),
291 genlmsg_attrlen(gnlh
, 0), NULL
);
297 static int nl80211_subscribe_cb(struct nl_msg
*msg
, void *arg
)
299 struct nl80211_group_conveyor
*cv
= arg
;
301 struct nlattr
**attr
= nl80211_parse(msg
);
302 struct nlattr
*mgrpinfo
[CTRL_ATTR_MCAST_GRP_MAX
+ 1];
306 if (!attr
[CTRL_ATTR_MCAST_GROUPS
])
309 nla_for_each_nested(mgrp
, attr
[CTRL_ATTR_MCAST_GROUPS
], mgrpidx
)
311 nla_parse(mgrpinfo
, CTRL_ATTR_MCAST_GRP_MAX
,
312 nla_data(mgrp
), nla_len(mgrp
), NULL
);
314 if (mgrpinfo
[CTRL_ATTR_MCAST_GRP_ID
] &&
315 mgrpinfo
[CTRL_ATTR_MCAST_GRP_NAME
] &&
316 !strncmp(nla_data(mgrpinfo
[CTRL_ATTR_MCAST_GRP_NAME
]),
317 cv
->name
, nla_len(mgrpinfo
[CTRL_ATTR_MCAST_GRP_NAME
])))
319 cv
->id
= nla_get_u32(mgrpinfo
[CTRL_ATTR_MCAST_GRP_ID
]);
327 static int nl80211_subscribe(const char *family
, const char *group
)
329 struct nl80211_group_conveyor cv
= { .name
= group
, .id
= -ENOENT
};
330 struct nl80211_msg_conveyor
*req
;
332 req
= nl80211_ctl(CTRL_CMD_GETFAMILY
, 0);
335 NLA_PUT_STRING(req
->msg
, CTRL_ATTR_FAMILY_NAME
, family
);
336 nl80211_send(req
, nl80211_subscribe_cb
, &cv
);
342 return nl_socket_add_membership(nls
->nl_sock
, cv
.id
);
346 static int nl80211_wait_cb(struct nl_msg
*msg
, void *arg
)
348 struct nl80211_event_conveyor
*cv
= arg
;
349 struct genlmsghdr
*gnlh
= nlmsg_data(nlmsg_hdr(msg
));
351 if (gnlh
->cmd
== cv
->wait
)
352 cv
->recv
= gnlh
->cmd
;
357 static int nl80211_wait_seq_check(struct nl_msg
*msg
, void *arg
)
362 static int nl80211_wait(const char *family
, const char *group
, int cmd
)
364 struct nl80211_event_conveyor cv
= { .wait
= cmd
};
367 if (nl80211_subscribe(family
, group
))
370 cb
= nl_cb_alloc(NL_CB_DEFAULT
);
375 nl_cb_set(cb
, NL_CB_SEQ_CHECK
, NL_CB_CUSTOM
, nl80211_wait_seq_check
, NULL
);
376 nl_cb_set(cb
, NL_CB_VALID
, NL_CB_CUSTOM
, nl80211_wait_cb
, &cv
);
379 nl_recvmsgs(nls
->nl_sock
, cb
);
387 static int nl80211_freq2channel(int freq
)
391 else if (freq
< 2484)
392 return (freq
- 2407) / 5;
393 else if (freq
>= 4910 && freq
<= 4980)
394 return (freq
- 4000) / 5;
396 return (freq
- 5000) / 5;
399 static int nl80211_channel2freq(int channel
, const char *band
)
401 if (!band
|| band
[0] != 'a')
405 else if (channel
< 14)
406 return (channel
* 5) + 2407;
410 if (channel
>= 182 && channel
<= 196)
411 return (channel
* 5) + 4000;
413 return (channel
* 5) + 5000;
419 static char * nl80211_getval(const char *ifname
, const char *buf
, const char *key
)
422 char lkey
[64] = { 0 };
423 const char *ln
= buf
;
424 static char lval
[256] = { 0 };
426 int matched_if
= ifname
? 0 : 1;
429 for( i
= 0, len
= strlen(buf
); i
< len
; i
++ )
431 if (!lkey
[0] && (buf
[i
] == ' ' || buf
[i
] == '\t'))
435 else if (!lkey
[0] && (buf
[i
] == '='))
437 if ((&buf
[i
] - ln
) > 0)
438 memcpy(lkey
, ln
, min(sizeof(lkey
) - 1, &buf
[i
] - ln
));
440 else if (buf
[i
] == '\n')
444 memcpy(lval
, ln
+ strlen(lkey
) + 1,
445 min(sizeof(lval
) - 1, &buf
[i
] - ln
- strlen(lkey
) - 1));
447 if ((ifname
!= NULL
) &&
448 (!strcmp(lkey
, "interface") || !strcmp(lkey
, "bss")) )
450 matched_if
= !strcmp(lval
, ifname
);
452 else if (matched_if
&& !strcmp(lkey
, key
))
459 memset(lkey
, 0, sizeof(lkey
));
460 memset(lval
, 0, sizeof(lval
));
467 static int nl80211_ifname2phy_cb(struct nl_msg
*msg
, void *arg
)
470 struct nlattr
**attr
= nl80211_parse(msg
);
472 if (attr
[NL80211_ATTR_WIPHY_NAME
])
473 memcpy(buf
, nla_data(attr
[NL80211_ATTR_WIPHY_NAME
]),
474 nla_len(attr
[NL80211_ATTR_WIPHY_NAME
]));
481 static char * nl80211_ifname2phy(const char *ifname
)
483 static char phy
[32] = { 0 };
484 struct nl80211_msg_conveyor
*req
;
486 memset(phy
, 0, sizeof(phy
));
488 req
= nl80211_msg(ifname
, NL80211_CMD_GET_WIPHY
, 0);
491 nl80211_send(req
, nl80211_ifname2phy_cb
, phy
);
495 return phy
[0] ? phy
: NULL
;
498 static char * nl80211_phy2ifname(const char *ifname
)
500 int fd
, ifidx
= -1, cifidx
= -1, phyidx
= -1;
502 static char nif
[IFNAMSIZ
] = { 0 };
507 /* Only accept phy name of the form phy%d or radio%d */
510 else if (!strncmp(ifname
, "phy", 3))
511 phyidx
= atoi(&ifname
[3]);
512 else if (!strncmp(ifname
, "radio", 5))
513 phyidx
= atoi(&ifname
[5]);
517 memset(nif
, 0, sizeof(nif
));
521 if ((d
= opendir("/sys/class/net")) != NULL
)
523 while ((e
= readdir(d
)) != NULL
)
525 snprintf(buffer
, sizeof(buffer
),
526 "/sys/class/net/%s/phy80211/index", e
->d_name
);
528 if (nl80211_readint(buffer
) == phyidx
)
530 snprintf(buffer
, sizeof(buffer
),
531 "/sys/class/net/%s/ifindex", e
->d_name
);
533 if ((cifidx
= nl80211_readint(buffer
)) >= 0 &&
534 ((ifidx
< 0) || (cifidx
< ifidx
)))
537 strncpy(nif
, e
->d_name
, sizeof(nif
));
546 return nif
[0] ? nif
: NULL
;
549 static int nl80211_get_mode_cb(struct nl_msg
*msg
, void *arg
)
552 struct nlattr
**tb
= nl80211_parse(msg
);
553 const int ifmodes
[NL80211_IFTYPE_MAX
+ 1] = {
554 IWINFO_OPMODE_UNKNOWN
, /* unspecified */
555 IWINFO_OPMODE_ADHOC
, /* IBSS */
556 IWINFO_OPMODE_CLIENT
, /* managed */
557 IWINFO_OPMODE_MASTER
, /* AP */
558 IWINFO_OPMODE_AP_VLAN
, /* AP/VLAN */
559 IWINFO_OPMODE_WDS
, /* WDS */
560 IWINFO_OPMODE_MONITOR
, /* monitor */
561 IWINFO_OPMODE_MESHPOINT
, /* mesh point */
562 IWINFO_OPMODE_P2P_CLIENT
, /* P2P-client */
563 IWINFO_OPMODE_P2P_GO
, /* P2P-GO */
566 if (tb
[NL80211_ATTR_IFTYPE
])
567 *mode
= ifmodes
[nla_get_u32(tb
[NL80211_ATTR_IFTYPE
])];
573 static int nl80211_get_mode(const char *ifname
, int *buf
)
576 struct nl80211_msg_conveyor
*req
;
578 res
= nl80211_phy2ifname(ifname
);
579 req
= nl80211_msg(res
? res
: ifname
, NL80211_CMD_GET_INTERFACE
, 0);
580 *buf
= IWINFO_OPMODE_UNKNOWN
;
584 nl80211_send(req
, nl80211_get_mode_cb
, buf
);
588 return (*buf
== IWINFO_OPMODE_UNKNOWN
) ? -1 : 0;
591 static char * nl80211_hostapd_info(const char *ifname
)
595 char path
[32] = { 0 };
596 static char buf
[4096] = { 0 };
599 if (nl80211_get_mode(ifname
, &mode
))
602 if ((mode
== IWINFO_OPMODE_MASTER
|| mode
== IWINFO_OPMODE_AP_VLAN
) &&
603 (phy
= nl80211_ifname2phy(ifname
)) != NULL
)
605 snprintf(path
, sizeof(path
), "/var/run/hostapd-%s.conf", phy
);
607 if ((conf
= fopen(path
, "r")) != NULL
)
609 fread(buf
, sizeof(buf
) - 1, 1, conf
);
619 static inline int nl80211_wpactl_recv(int sock
, char *buf
, int blen
)
622 struct timeval tv
= { 2, 0 };
627 memset(buf
, 0, blen
);
630 if (select(sock
+ 1, &rfds
, NULL
, NULL
, &tv
) < 0)
633 if (!FD_ISSET(sock
, &rfds
))
636 return recv(sock
, buf
, blen
, 0);
639 static char * nl80211_wpactl_info(const char *ifname
, const char *cmd
,
645 size_t remote_length
, local_length
;
646 static char buffer
[10240] = { 0 };
648 struct sockaddr_un local
= { 0 };
649 struct sockaddr_un remote
= { 0 };
652 sock
= socket(PF_UNIX
, SOCK_DGRAM
, 0);
656 remote
.sun_family
= AF_UNIX
;
657 remote_length
= sizeof(remote
.sun_family
) + sprintf(remote
.sun_path
,
658 "/var/run/wpa_supplicant-%s/%s", ifname
, ifname
);
660 if (fcntl(sock
, F_SETFD
, fcntl(sock
, F_GETFD
) | FD_CLOEXEC
) < 0)
663 if (connect(sock
, (struct sockaddr
*) &remote
, remote_length
))
665 remote_length
= sizeof(remote
.sun_family
) + sprintf(remote
.sun_path
,
666 "/var/run/wpa_supplicant/%s", ifname
);
668 if (connect(sock
, (struct sockaddr
*) &remote
, remote_length
))
672 local
.sun_family
= AF_UNIX
;
673 local_length
= sizeof(local
.sun_family
) +
674 sprintf(local
.sun_path
, "/var/run/iwinfo-%s-%d", ifname
, getpid());
676 if (bind(sock
, (struct sockaddr
*) &local
, local_length
))
682 send(sock
, "ATTACH", 6, 0);
684 if (nl80211_wpactl_recv(sock
, buffer
, sizeof(buffer
)-1) <= 0)
689 send(sock
, cmd
, strlen(cmd
), 0);
691 /* we might have to scan up to 72 channels / 256ms per channel */
692 /* this makes up to 18.5s hence 10 tries */
693 while( numtry
++ < 10 )
697 /* make sure there is a terminating nul byte */
698 if (nl80211_wpactl_recv(sock
, buffer
, sizeof(buffer
)-1) <= 0)
706 if ((!event
&& buffer
[0] != '<') || (event
&& strstr(buffer
, event
)))
709 /* there may be more than max(numtry) BSS-ADDED events */
710 /* ignore them similar to wpa_cli */
711 if (buffer
[0] == '<' &&
712 (bracket
=strchr(buffer
,'>')) != NULL
&&
713 strncmp(bracket
+1,"CTRL-EVENT-BSS-ADDED",20) == 0)
722 if (local
.sun_family
)
723 unlink(local
.sun_path
);
728 static char * nl80211_ifadd(const char *ifname
)
731 char *rv
= NULL
, path
[PATH_MAX
];
732 static char nif
[IFNAMSIZ
] = { 0 };
733 struct nl80211_msg_conveyor
*req
, *res
;
736 req
= nl80211_msg(ifname
, NL80211_CMD_NEW_INTERFACE
, 0);
739 snprintf(nif
, sizeof(nif
), "tmp.%s", ifname
);
741 NLA_PUT_STRING(req
->msg
, NL80211_ATTR_IFNAME
, nif
);
742 NLA_PUT_U32(req
->msg
, NL80211_ATTR_IFTYPE
, NL80211_IFTYPE_STATION
);
744 nl80211_send(req
, NULL
, NULL
);
746 snprintf(path
, sizeof(path
) - 1,
747 "/proc/sys/net/ipv6/conf/%s/disable_ipv6", nif
);
749 if ((sysfs
= fopen(path
, "w")) != NULL
)
751 fwrite("0\n", 1, 2, sysfs
);
764 static void nl80211_ifdel(const char *ifname
)
766 struct nl80211_msg_conveyor
*req
;
768 req
= nl80211_msg(ifname
, NL80211_CMD_DEL_INTERFACE
, 0);
771 NLA_PUT_STRING(req
->msg
, NL80211_ATTR_IFNAME
, ifname
);
773 nl80211_send(req
, NULL
, NULL
);
780 static void nl80211_hostapd_hup(const char *ifname
)
784 char *phy
= nl80211_ifname2phy(ifname
);
788 snprintf(buf
, sizeof(buf
), "/var/run/wifi-%s.pid", phy
);
789 if ((fd
= open(buf
, O_RDONLY
)) > 0)
791 if (read(fd
, buf
, sizeof(buf
)) > 0)
803 static int nl80211_probe(const char *ifname
)
805 return !!nl80211_ifname2phy(ifname
);
808 struct nl80211_ssid_bssid
{
810 unsigned char bssid
[7];
813 static int nl80211_get_ssid_bssid_cb(struct nl_msg
*msg
, void *arg
)
817 struct nl80211_ssid_bssid
*sb
= arg
;
818 struct nlattr
**tb
= nl80211_parse(msg
);
819 struct nlattr
*bss
[NL80211_BSS_MAX
+ 1];
821 static struct nla_policy bss_policy
[NL80211_BSS_MAX
+ 1] = {
822 [NL80211_BSS_INFORMATION_ELEMENTS
] = { },
823 [NL80211_BSS_STATUS
] = { .type
= NLA_U32
},
826 if (!tb
[NL80211_ATTR_BSS
] ||
827 nla_parse_nested(bss
, NL80211_BSS_MAX
, tb
[NL80211_ATTR_BSS
],
829 !bss
[NL80211_BSS_BSSID
] ||
830 !bss
[NL80211_BSS_STATUS
] ||
831 !bss
[NL80211_BSS_INFORMATION_ELEMENTS
])
836 switch (nla_get_u32(bss
[NL80211_BSS_STATUS
]))
838 case NL80211_BSS_STATUS_ASSOCIATED
:
839 case NL80211_BSS_STATUS_AUTHENTICATED
:
840 case NL80211_BSS_STATUS_IBSS_JOINED
:
844 ie
= nla_data(bss
[NL80211_BSS_INFORMATION_ELEMENTS
]);
845 ielen
= nla_len(bss
[NL80211_BSS_INFORMATION_ELEMENTS
]);
847 while (ielen
>= 2 && ielen
>= ie
[1])
851 memcpy(sb
->ssid
, ie
+ 2, min(ie
[1], IWINFO_ESSID_MAX_SIZE
));
862 memcpy(sb
->bssid
+ 1, nla_data(bss
[NL80211_BSS_BSSID
]), 6);
871 static int nl80211_get_ssid(const char *ifname
, char *buf
)
874 struct nl80211_msg_conveyor
*req
;
875 struct nl80211_ssid_bssid sb
;
877 /* try to find ssid from scan dump results */
878 res
= nl80211_phy2ifname(ifname
);
879 req
= nl80211_msg(res
? res
: ifname
, NL80211_CMD_GET_SCAN
, NLM_F_DUMP
);
886 nl80211_send(req
, nl80211_get_ssid_bssid_cb
, &sb
);
890 /* failed, try to find from hostapd info */
892 (res
= nl80211_hostapd_info(ifname
)) &&
893 (res
= nl80211_getval(ifname
, res
, "ssid")))
895 memcpy(buf
, res
, strlen(res
));
898 return (*buf
== 0) ? -1 : 0;
901 static int nl80211_get_bssid(const char *ifname
, char *buf
)
904 struct nl80211_msg_conveyor
*req
;
905 struct nl80211_ssid_bssid sb
;
907 /* try to find bssid from scan dump results */
908 res
= nl80211_phy2ifname(ifname
);
909 req
= nl80211_msg(res
? res
: ifname
, NL80211_CMD_GET_SCAN
, NLM_F_DUMP
);
916 nl80211_send(req
, nl80211_get_ssid_bssid_cb
, &sb
);
920 /* failed, try to find mac from hostapd info */
921 if ((sb
.bssid
[0] == 0) &&
922 (res
= nl80211_hostapd_info(ifname
)) &&
923 (res
= nl80211_getval(ifname
, res
, "bssid")))
926 sb
.bssid
[1] = strtol(&res
[0], NULL
, 16);
927 sb
.bssid
[2] = strtol(&res
[3], NULL
, 16);
928 sb
.bssid
[3] = strtol(&res
[6], NULL
, 16);
929 sb
.bssid
[4] = strtol(&res
[9], NULL
, 16);
930 sb
.bssid
[5] = strtol(&res
[12], NULL
, 16);
931 sb
.bssid
[6] = strtol(&res
[15], NULL
, 16);
936 sprintf(buf
, "%02X:%02X:%02X:%02X:%02X:%02X",
937 sb
.bssid
[1], sb
.bssid
[2], sb
.bssid
[3],
938 sb
.bssid
[4], sb
.bssid
[5], sb
.bssid
[6]);
947 static int nl80211_get_frequency_scan_cb(struct nl_msg
*msg
, void *arg
)
950 struct nlattr
**attr
= nl80211_parse(msg
);
951 struct nlattr
*binfo
[NL80211_BSS_MAX
+ 1];
953 static struct nla_policy bss_policy
[NL80211_BSS_MAX
+ 1] = {
954 [NL80211_BSS_FREQUENCY
] = { .type
= NLA_U32
},
955 [NL80211_BSS_STATUS
] = { .type
= NLA_U32
},
958 if (attr
[NL80211_ATTR_BSS
] &&
959 !nla_parse_nested(binfo
, NL80211_BSS_MAX
,
960 attr
[NL80211_ATTR_BSS
], bss_policy
))
962 if (binfo
[NL80211_BSS_STATUS
] && binfo
[NL80211_BSS_FREQUENCY
])
963 *freq
= nla_get_u32(binfo
[NL80211_BSS_FREQUENCY
]);
969 static int nl80211_get_frequency_info_cb(struct nl_msg
*msg
, void *arg
)
972 struct nlattr
**tb
= nl80211_parse(msg
);
974 if (tb
[NL80211_ATTR_WIPHY_FREQ
])
975 *freq
= nla_get_u32(tb
[NL80211_ATTR_WIPHY_FREQ
]);
980 static int nl80211_get_frequency(const char *ifname
, int *buf
)
984 struct nl80211_msg_conveyor
*req
;
986 /* try to find frequency from interface info */
987 res
= nl80211_phy2ifname(ifname
);
988 req
= nl80211_msg(res
? res
: ifname
, NL80211_CMD_GET_INTERFACE
, 0);
993 nl80211_send(req
, nl80211_get_frequency_info_cb
, buf
);
997 /* failed, try to find frequency from hostapd info */
999 (res
= nl80211_hostapd_info(ifname
)) &&
1000 (channel
= nl80211_getval(NULL
, res
, "channel")))
1002 chn
= atoi(channel
);
1003 *buf
= nl80211_channel2freq(chn
, nl80211_getval(NULL
, res
, "hw_mode"));
1007 /* failed, try to find frequency from scan results */
1010 res
= nl80211_phy2ifname(ifname
);
1011 req
= nl80211_msg(res
? res
: ifname
, NL80211_CMD_GET_SCAN
,
1016 nl80211_send(req
, nl80211_get_frequency_scan_cb
, buf
);
1022 return (*buf
== 0) ? -1 : 0;
1025 static int nl80211_get_channel(const char *ifname
, int *buf
)
1027 if (!nl80211_get_frequency(ifname
, buf
))
1029 *buf
= nl80211_freq2channel(*buf
);
1037 static int nl80211_get_txpower(const char *ifname
, int *buf
)
1041 char path
[PATH_MAX
];
1043 res
= nl80211_ifname2phy(ifname
);
1044 snprintf(path
, sizeof(path
), "/sys/kernel/debug/ieee80211/%s/power",
1045 res
? res
: ifname
);
1047 if ((*buf
= nl80211_readint(path
)) > -1)
1051 return wext_ops
.txpower(ifname
, buf
);
1055 static int nl80211_fill_signal_cb(struct nl_msg
*msg
, void *arg
)
1059 struct nl80211_rssi_rate
*rr
= arg
;
1060 struct nlattr
**attr
= nl80211_parse(msg
);
1061 struct nlattr
*sinfo
[NL80211_STA_INFO_MAX
+ 1];
1062 struct nlattr
*rinfo
[NL80211_RATE_INFO_MAX
+ 1];
1064 static struct nla_policy stats_policy
[NL80211_STA_INFO_MAX
+ 1] = {
1065 [NL80211_STA_INFO_INACTIVE_TIME
] = { .type
= NLA_U32
},
1066 [NL80211_STA_INFO_RX_BYTES
] = { .type
= NLA_U32
},
1067 [NL80211_STA_INFO_TX_BYTES
] = { .type
= NLA_U32
},
1068 [NL80211_STA_INFO_RX_PACKETS
] = { .type
= NLA_U32
},
1069 [NL80211_STA_INFO_TX_PACKETS
] = { .type
= NLA_U32
},
1070 [NL80211_STA_INFO_SIGNAL
] = { .type
= NLA_U8
},
1071 [NL80211_STA_INFO_TX_BITRATE
] = { .type
= NLA_NESTED
},
1072 [NL80211_STA_INFO_LLID
] = { .type
= NLA_U16
},
1073 [NL80211_STA_INFO_PLID
] = { .type
= NLA_U16
},
1074 [NL80211_STA_INFO_PLINK_STATE
] = { .type
= NLA_U8
},
1077 static struct nla_policy rate_policy
[NL80211_RATE_INFO_MAX
+ 1] = {
1078 [NL80211_RATE_INFO_BITRATE
] = { .type
= NLA_U16
},
1079 [NL80211_RATE_INFO_MCS
] = { .type
= NLA_U8
},
1080 [NL80211_RATE_INFO_40_MHZ_WIDTH
] = { .type
= NLA_FLAG
},
1081 [NL80211_RATE_INFO_SHORT_GI
] = { .type
= NLA_FLAG
},
1084 if (attr
[NL80211_ATTR_STA_INFO
])
1086 if (!nla_parse_nested(sinfo
, NL80211_STA_INFO_MAX
,
1087 attr
[NL80211_ATTR_STA_INFO
], stats_policy
))
1089 if (sinfo
[NL80211_STA_INFO_SIGNAL
])
1091 dbm
= nla_get_u8(sinfo
[NL80211_STA_INFO_SIGNAL
]);
1092 rr
->rssi
= rr
->rssi
? (int8_t)((rr
->rssi
+ dbm
) / 2) : dbm
;
1095 if (sinfo
[NL80211_STA_INFO_TX_BITRATE
])
1097 if (!nla_parse_nested(rinfo
, NL80211_RATE_INFO_MAX
,
1098 sinfo
[NL80211_STA_INFO_TX_BITRATE
],
1101 if (rinfo
[NL80211_RATE_INFO_BITRATE
])
1103 mbit
= nla_get_u16(rinfo
[NL80211_RATE_INFO_BITRATE
]);
1105 ? (int16_t)((rr
->rate
+ mbit
) / 2) : mbit
;
1115 static void nl80211_fill_signal(const char *ifname
, struct nl80211_rssi_rate
*r
)
1119 struct nl80211_msg_conveyor
*req
;
1124 if ((d
= opendir("/sys/class/net")) != NULL
)
1126 while ((de
= readdir(d
)) != NULL
)
1128 if (!strncmp(de
->d_name
, ifname
, strlen(ifname
)) &&
1129 (!de
->d_name
[strlen(ifname
)] ||
1130 !strncmp(&de
->d_name
[strlen(ifname
)], ".sta", 4)))
1132 req
= nl80211_msg(de
->d_name
, NL80211_CMD_GET_STATION
,
1137 nl80211_send(req
, nl80211_fill_signal_cb
, r
);
1147 static int nl80211_get_bitrate(const char *ifname
, int *buf
)
1149 struct nl80211_rssi_rate rr
;
1151 nl80211_fill_signal(ifname
, &rr
);
1155 *buf
= (rr
.rate
* 100);
1162 static int nl80211_get_signal(const char *ifname
, int *buf
)
1164 struct nl80211_rssi_rate rr
;
1166 nl80211_fill_signal(ifname
, &rr
);
1177 static int nl80211_get_noise_cb(struct nl_msg
*msg
, void *arg
)
1179 int8_t *noise
= arg
;
1180 struct nlattr
**tb
= nl80211_parse(msg
);
1181 struct nlattr
*si
[NL80211_SURVEY_INFO_MAX
+ 1];
1183 static struct nla_policy sp
[NL80211_SURVEY_INFO_MAX
+ 1] = {
1184 [NL80211_SURVEY_INFO_FREQUENCY
] = { .type
= NLA_U32
},
1185 [NL80211_SURVEY_INFO_NOISE
] = { .type
= NLA_U8
},
1188 if (!tb
[NL80211_ATTR_SURVEY_INFO
])
1191 if (nla_parse_nested(si
, NL80211_SURVEY_INFO_MAX
,
1192 tb
[NL80211_ATTR_SURVEY_INFO
], sp
))
1195 if (!si
[NL80211_SURVEY_INFO_NOISE
])
1198 if (!*noise
|| si
[NL80211_SURVEY_INFO_IN_USE
])
1199 *noise
= (int8_t)nla_get_u8(si
[NL80211_SURVEY_INFO_NOISE
]);
1205 static int nl80211_get_noise(const char *ifname
, int *buf
)
1208 struct nl80211_msg_conveyor
*req
;
1210 req
= nl80211_msg(ifname
, NL80211_CMD_GET_SURVEY
, NLM_F_DUMP
);
1215 nl80211_send(req
, nl80211_get_noise_cb
, &noise
);
1228 static int nl80211_get_quality(const char *ifname
, int *buf
)
1232 if (!nl80211_get_signal(ifname
, &signal
))
1234 /* A positive signal level is usually just a quality
1235 * value, pass through as-is */
1241 /* The cfg80211 wext compat layer assumes a signal range
1242 * of -110 dBm to -40 dBm, the quality value is derived
1243 * by adding 110 to the signal level */
1248 else if (signal
> -40)
1251 *buf
= (signal
+ 110);
1260 static int nl80211_get_quality_max(const char *ifname
, int *buf
)
1262 /* The cfg80211 wext compat layer assumes a maximum
1269 static int nl80211_get_encryption(const char *ifname
, char *buf
)
1274 struct iwinfo_crypto_entry
*c
= (struct iwinfo_crypto_entry
*)buf
;
1276 /* WPA supplicant */
1277 if ((res
= nl80211_wpactl_info(ifname
, "STATUS", NULL
)) &&
1278 (val
= nl80211_getval(NULL
, res
, "pairwise_cipher")))
1281 if (strstr(val
, "WEP"))
1283 if (strstr(val
, "WEP-40"))
1284 c
->pair_ciphers
|= IWINFO_CIPHER_WEP40
;
1286 else if (strstr(val
, "WEP-104"))
1287 c
->pair_ciphers
|= IWINFO_CIPHER_WEP104
;
1290 c
->group_ciphers
= c
->pair_ciphers
;
1292 c
->auth_suites
|= IWINFO_KMGMT_NONE
;
1293 c
->auth_algs
|= IWINFO_AUTH_OPEN
; /* XXX: assumption */
1299 if (strstr(val
, "TKIP"))
1300 c
->pair_ciphers
|= IWINFO_CIPHER_TKIP
;
1302 else if (strstr(val
, "CCMP"))
1303 c
->pair_ciphers
|= IWINFO_CIPHER_CCMP
;
1305 else if (strstr(val
, "NONE"))
1306 c
->pair_ciphers
|= IWINFO_CIPHER_NONE
;
1308 else if (strstr(val
, "WEP-40"))
1309 c
->pair_ciphers
|= IWINFO_CIPHER_WEP40
;
1311 else if (strstr(val
, "WEP-104"))
1312 c
->pair_ciphers
|= IWINFO_CIPHER_WEP104
;
1315 if ((val
= nl80211_getval(NULL
, res
, "group_cipher")))
1317 if (strstr(val
, "TKIP"))
1318 c
->group_ciphers
|= IWINFO_CIPHER_TKIP
;
1320 else if (strstr(val
, "CCMP"))
1321 c
->group_ciphers
|= IWINFO_CIPHER_CCMP
;
1323 else if (strstr(val
, "NONE"))
1324 c
->group_ciphers
|= IWINFO_CIPHER_NONE
;
1326 else if (strstr(val
, "WEP-40"))
1327 c
->group_ciphers
|= IWINFO_CIPHER_WEP40
;
1329 else if (strstr(val
, "WEP-104"))
1330 c
->group_ciphers
|= IWINFO_CIPHER_WEP104
;
1334 if ((val
= nl80211_getval(NULL
, res
, "key_mgmt")))
1336 if (strstr(val
, "WPA2"))
1339 else if (strstr(val
, "WPA"))
1343 if (strstr(val
, "PSK"))
1344 c
->auth_suites
|= IWINFO_KMGMT_PSK
;
1346 else if (strstr(val
, "EAP") || strstr(val
, "802.1X"))
1347 c
->auth_suites
|= IWINFO_KMGMT_8021x
;
1349 else if (strstr(val
, "NONE"))
1350 c
->auth_suites
|= IWINFO_KMGMT_NONE
;
1353 c
->enabled
= (c
->wpa_version
&& c
->auth_suites
) ? 1 : 0;
1360 else if ((res
= nl80211_hostapd_info(ifname
)))
1362 if ((val
= nl80211_getval(ifname
, res
, "wpa")) != NULL
)
1363 c
->wpa_version
= atoi(val
);
1365 val
= nl80211_getval(ifname
, res
, "wpa_key_mgmt");
1367 if (!val
|| strstr(val
, "PSK"))
1368 c
->auth_suites
|= IWINFO_KMGMT_PSK
;
1370 if (val
&& strstr(val
, "EAP"))
1371 c
->auth_suites
|= IWINFO_KMGMT_8021x
;
1373 if (val
&& strstr(val
, "NONE"))
1374 c
->auth_suites
|= IWINFO_KMGMT_NONE
;
1376 if ((val
= nl80211_getval(ifname
, res
, "wpa_pairwise")) != NULL
)
1378 if (strstr(val
, "TKIP"))
1379 c
->pair_ciphers
|= IWINFO_CIPHER_TKIP
;
1381 if (strstr(val
, "CCMP"))
1382 c
->pair_ciphers
|= IWINFO_CIPHER_CCMP
;
1384 if (strstr(val
, "NONE"))
1385 c
->pair_ciphers
|= IWINFO_CIPHER_NONE
;
1388 if ((val
= nl80211_getval(ifname
, res
, "auth_algs")) != NULL
)
1392 c
->auth_algs
|= IWINFO_AUTH_OPEN
;
1396 c
->auth_algs
|= IWINFO_AUTH_SHARED
;
1400 c
->auth_algs
|= IWINFO_AUTH_OPEN
;
1401 c
->auth_algs
|= IWINFO_AUTH_SHARED
;
1408 for (i
= 0; i
< 4; i
++)
1410 snprintf(k
, sizeof(k
), "wep_key%d", i
);
1412 if ((val
= nl80211_getval(ifname
, res
, k
)))
1414 if ((strlen(val
) == 5) || (strlen(val
) == 10))
1415 c
->pair_ciphers
|= IWINFO_CIPHER_WEP40
;
1417 else if ((strlen(val
) == 13) || (strlen(val
) == 26))
1418 c
->pair_ciphers
|= IWINFO_CIPHER_WEP104
;
1423 c
->group_ciphers
= c
->pair_ciphers
;
1424 c
->enabled
= (c
->wpa_version
|| c
->pair_ciphers
) ? 1 : 0;
1432 static int nl80211_get_phyname(const char *ifname
, char *buf
)
1436 name
= nl80211_ifname2phy(ifname
);
1443 else if ((name
= nl80211_phy2ifname(ifname
)) != NULL
)
1445 name
= nl80211_ifname2phy(name
);
1449 strcpy(buf
, ifname
);
1458 static int nl80211_get_assoclist_cb(struct nl_msg
*msg
, void *arg
)
1460 struct nl80211_array_buf
*arr
= arg
;
1461 struct iwinfo_assoclist_entry
*e
= arr
->buf
;
1462 struct nlattr
**attr
= nl80211_parse(msg
);
1463 struct nlattr
*sinfo
[NL80211_STA_INFO_MAX
+ 1];
1464 struct nlattr
*rinfo
[NL80211_RATE_INFO_MAX
+ 1];
1466 static struct nla_policy stats_policy
[NL80211_STA_INFO_MAX
+ 1] = {
1467 [NL80211_STA_INFO_INACTIVE_TIME
] = { .type
= NLA_U32
},
1468 [NL80211_STA_INFO_RX_PACKETS
] = { .type
= NLA_U32
},
1469 [NL80211_STA_INFO_TX_PACKETS
] = { .type
= NLA_U32
},
1470 [NL80211_STA_INFO_RX_BITRATE
] = { .type
= NLA_NESTED
},
1471 [NL80211_STA_INFO_TX_BITRATE
] = { .type
= NLA_NESTED
},
1472 [NL80211_STA_INFO_SIGNAL
] = { .type
= NLA_U8
},
1475 static struct nla_policy rate_policy
[NL80211_RATE_INFO_MAX
+ 1] = {
1476 [NL80211_RATE_INFO_BITRATE
] = { .type
= NLA_U16
},
1477 [NL80211_RATE_INFO_MCS
] = { .type
= NLA_U8
},
1478 [NL80211_RATE_INFO_40_MHZ_WIDTH
] = { .type
= NLA_FLAG
},
1479 [NL80211_RATE_INFO_SHORT_GI
] = { .type
= NLA_FLAG
},
1482 /* advance to end of array */
1484 memset(e
, 0, sizeof(*e
));
1486 if (attr
[NL80211_ATTR_MAC
])
1487 memcpy(e
->mac
, nla_data(attr
[NL80211_ATTR_MAC
]), 6);
1489 if (attr
[NL80211_ATTR_STA_INFO
] &&
1490 !nla_parse_nested(sinfo
, NL80211_STA_INFO_MAX
,
1491 attr
[NL80211_ATTR_STA_INFO
], stats_policy
))
1493 if (sinfo
[NL80211_STA_INFO_SIGNAL
])
1494 e
->signal
= nla_get_u8(sinfo
[NL80211_STA_INFO_SIGNAL
]);
1496 if (sinfo
[NL80211_STA_INFO_INACTIVE_TIME
])
1497 e
->inactive
= nla_get_u32(sinfo
[NL80211_STA_INFO_INACTIVE_TIME
]);
1499 if (sinfo
[NL80211_STA_INFO_RX_PACKETS
])
1500 e
->rx_packets
= nla_get_u32(sinfo
[NL80211_STA_INFO_RX_PACKETS
]);
1502 if (sinfo
[NL80211_STA_INFO_TX_PACKETS
])
1503 e
->tx_packets
= nla_get_u32(sinfo
[NL80211_STA_INFO_TX_PACKETS
]);
1505 if (sinfo
[NL80211_STA_INFO_RX_BITRATE
] &&
1506 !nla_parse_nested(rinfo
, NL80211_RATE_INFO_MAX
,
1507 sinfo
[NL80211_STA_INFO_RX_BITRATE
], rate_policy
))
1509 if (rinfo
[NL80211_RATE_INFO_BITRATE
])
1511 nla_get_u16(rinfo
[NL80211_RATE_INFO_BITRATE
]) * 100;
1513 if (rinfo
[NL80211_RATE_INFO_MCS
])
1514 e
->rx_rate
.mcs
= nla_get_u8(rinfo
[NL80211_RATE_INFO_MCS
]);
1516 if (rinfo
[NL80211_RATE_INFO_40_MHZ_WIDTH
])
1517 e
->rx_rate
.is_40mhz
= 1;
1519 if (rinfo
[NL80211_RATE_INFO_SHORT_GI
])
1520 e
->rx_rate
.is_short_gi
= 1;
1523 if (sinfo
[NL80211_STA_INFO_TX_BITRATE
] &&
1524 !nla_parse_nested(rinfo
, NL80211_RATE_INFO_MAX
,
1525 sinfo
[NL80211_STA_INFO_TX_BITRATE
], rate_policy
))
1527 if (rinfo
[NL80211_RATE_INFO_BITRATE
])
1529 nla_get_u16(rinfo
[NL80211_RATE_INFO_BITRATE
]) * 100;
1531 if (rinfo
[NL80211_RATE_INFO_MCS
])
1532 e
->tx_rate
.mcs
= nla_get_u8(rinfo
[NL80211_RATE_INFO_MCS
]);
1534 if (rinfo
[NL80211_RATE_INFO_40_MHZ_WIDTH
])
1535 e
->tx_rate
.is_40mhz
= 1;
1537 if (rinfo
[NL80211_RATE_INFO_SHORT_GI
])
1538 e
->tx_rate
.is_short_gi
= 1;
1542 e
->noise
= 0; /* filled in by caller */
1548 static int nl80211_get_assoclist(const char *ifname
, char *buf
, int *len
)
1553 struct nl80211_msg_conveyor
*req
;
1554 struct nl80211_array_buf arr
= { .buf
= buf
, .count
= 0 };
1555 struct iwinfo_assoclist_entry
*e
;
1557 if ((d
= opendir("/sys/class/net")) != NULL
)
1559 while ((de
= readdir(d
)) != NULL
)
1561 if (!strncmp(de
->d_name
, ifname
, strlen(ifname
)) &&
1562 (!de
->d_name
[strlen(ifname
)] ||
1563 !strncmp(&de
->d_name
[strlen(ifname
)], ".sta", 4)))
1565 req
= nl80211_msg(de
->d_name
, NL80211_CMD_GET_STATION
,
1570 nl80211_send(req
, nl80211_get_assoclist_cb
, &arr
);
1578 if (!nl80211_get_noise(ifname
, &noise
))
1579 for (i
= 0, e
= arr
.buf
; i
< arr
.count
; i
++, e
++)
1582 *len
= (arr
.count
* sizeof(struct iwinfo_assoclist_entry
));
1589 static int nl80211_get_txpwrlist_cb(struct nl_msg
*msg
, void *arg
)
1592 int ch_cur
, ch_cmp
, bands_remain
, freqs_remain
;
1594 struct nlattr
**attr
= nl80211_parse(msg
);
1595 struct nlattr
*bands
[NL80211_BAND_ATTR_MAX
+ 1];
1596 struct nlattr
*freqs
[NL80211_FREQUENCY_ATTR_MAX
+ 1];
1597 struct nlattr
*band
, *freq
;
1599 static struct nla_policy freq_policy
[NL80211_FREQUENCY_ATTR_MAX
+ 1] = {
1600 [NL80211_FREQUENCY_ATTR_FREQ
] = { .type
= NLA_U32
},
1601 [NL80211_FREQUENCY_ATTR_DISABLED
] = { .type
= NLA_FLAG
},
1602 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN
] = { .type
= NLA_FLAG
},
1603 [NL80211_FREQUENCY_ATTR_NO_IBSS
] = { .type
= NLA_FLAG
},
1604 [NL80211_FREQUENCY_ATTR_RADAR
] = { .type
= NLA_FLAG
},
1605 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER
] = { .type
= NLA_U32
},
1608 ch_cur
= *dbm_max
; /* value int* is initialized with channel by caller */
1611 nla_for_each_nested(band
, attr
[NL80211_ATTR_WIPHY_BANDS
], bands_remain
)
1613 nla_parse(bands
, NL80211_BAND_ATTR_MAX
, nla_data(band
),
1614 nla_len(band
), NULL
);
1616 nla_for_each_nested(freq
, bands
[NL80211_BAND_ATTR_FREQS
], freqs_remain
)
1618 nla_parse(freqs
, NL80211_FREQUENCY_ATTR_MAX
,
1619 nla_data(freq
), nla_len(freq
), freq_policy
);
1621 ch_cmp
= nl80211_freq2channel(nla_get_u32(
1622 freqs
[NL80211_FREQUENCY_ATTR_FREQ
]));
1624 if ((!ch_cur
|| (ch_cmp
== ch_cur
)) &&
1625 freqs
[NL80211_FREQUENCY_ATTR_MAX_TX_POWER
])
1627 *dbm_max
= (int)(0.01 * nla_get_u32(
1628 freqs
[NL80211_FREQUENCY_ATTR_MAX_TX_POWER
]));
1638 static int nl80211_get_txpwrlist(const char *ifname
, char *buf
, int *len
)
1641 int dbm_max
= -1, dbm_cur
, dbm_cnt
;
1642 struct nl80211_msg_conveyor
*req
;
1643 struct iwinfo_txpwrlist_entry entry
;
1645 if (nl80211_get_channel(ifname
, &ch_cur
))
1648 req
= nl80211_msg(ifname
, NL80211_CMD_GET_WIPHY
, 0);
1651 /* initialize the value pointer with channel for callback */
1654 nl80211_send(req
, nl80211_get_txpwrlist_cb
, &dbm_max
);
1660 for (dbm_cur
= 0, dbm_cnt
= 0;
1662 dbm_cur
++, dbm_cnt
++)
1664 entry
.dbm
= dbm_cur
;
1665 entry
.mw
= iwinfo_dbm2mw(dbm_cur
);
1667 memcpy(&buf
[dbm_cnt
* sizeof(entry
)], &entry
, sizeof(entry
));
1670 entry
.dbm
= dbm_max
;
1671 entry
.mw
= iwinfo_dbm2mw(dbm_max
);
1673 memcpy(&buf
[dbm_cnt
* sizeof(entry
)], &entry
, sizeof(entry
));
1676 *len
= dbm_cnt
* sizeof(entry
);
1683 static void nl80211_get_scancrypto(const char *spec
,
1684 struct iwinfo_crypto_entry
*c
)
1686 if (strstr(spec
, "WPA") || strstr(spec
, "WEP"))
1690 if (strstr(spec
, "WPA2-") && strstr(spec
, "WPA-"))
1693 else if (strstr(spec
, "WPA2"))
1696 else if (strstr(spec
, "WPA"))
1699 else if (strstr(spec
, "WEP"))
1700 c
->auth_algs
= IWINFO_AUTH_OPEN
| IWINFO_AUTH_SHARED
;
1703 if (strstr(spec
, "PSK"))
1704 c
->auth_suites
|= IWINFO_KMGMT_PSK
;
1706 if (strstr(spec
, "802.1X") || strstr(spec
, "EAP"))
1707 c
->auth_suites
|= IWINFO_KMGMT_8021x
;
1709 if (strstr(spec
, "WPA-NONE"))
1710 c
->auth_suites
|= IWINFO_KMGMT_NONE
;
1713 if (strstr(spec
, "TKIP"))
1714 c
->pair_ciphers
|= IWINFO_CIPHER_TKIP
;
1716 if (strstr(spec
, "CCMP"))
1717 c
->pair_ciphers
|= IWINFO_CIPHER_CCMP
;
1719 if (strstr(spec
, "WEP-40"))
1720 c
->pair_ciphers
|= IWINFO_CIPHER_WEP40
;
1722 if (strstr(spec
, "WEP-104"))
1723 c
->pair_ciphers
|= IWINFO_CIPHER_WEP104
;
1725 c
->group_ciphers
= c
->pair_ciphers
;
1734 struct nl80211_scanlist
{
1735 struct iwinfo_scanlist_entry
*e
;
1740 static void nl80211_get_scanlist_ie(struct nlattr
**bss
,
1741 struct iwinfo_scanlist_entry
*e
)
1743 int ielen
= nla_len(bss
[NL80211_BSS_INFORMATION_ELEMENTS
]);
1744 unsigned char *ie
= nla_data(bss
[NL80211_BSS_INFORMATION_ELEMENTS
]);
1745 static unsigned char ms_oui
[3] = { 0x00, 0x50, 0xf2 };
1748 while (ielen
>= 2 && ielen
>= ie
[1])
1753 len
= min(ie
[1], IWINFO_ESSID_MAX_SIZE
);
1754 memcpy(e
->ssid
, ie
+ 2, len
);
1759 iwinfo_parse_rsn(&e
->crypto
, ie
+ 2, ie
[1],
1760 IWINFO_CIPHER_CCMP
, IWINFO_KMGMT_8021x
);
1763 case 221: /* Vendor */
1764 if (ie
[1] >= 4 && !memcmp(ie
+ 2, ms_oui
, 3) && ie
[5] == 1)
1765 iwinfo_parse_rsn(&e
->crypto
, ie
+ 6, ie
[1] - 4,
1766 IWINFO_CIPHER_TKIP
, IWINFO_KMGMT_PSK
);
1775 static int nl80211_get_scanlist_cb(struct nl_msg
*msg
, void *arg
)
1780 struct nl80211_scanlist
*sl
= arg
;
1781 struct nlattr
**tb
= nl80211_parse(msg
);
1782 struct nlattr
*bss
[NL80211_BSS_MAX
+ 1];
1784 static struct nla_policy bss_policy
[NL80211_BSS_MAX
+ 1] = {
1785 [NL80211_BSS_TSF
] = { .type
= NLA_U64
},
1786 [NL80211_BSS_FREQUENCY
] = { .type
= NLA_U32
},
1787 [NL80211_BSS_BSSID
] = { },
1788 [NL80211_BSS_BEACON_INTERVAL
] = { .type
= NLA_U16
},
1789 [NL80211_BSS_CAPABILITY
] = { .type
= NLA_U16
},
1790 [NL80211_BSS_INFORMATION_ELEMENTS
] = { },
1791 [NL80211_BSS_SIGNAL_MBM
] = { .type
= NLA_U32
},
1792 [NL80211_BSS_SIGNAL_UNSPEC
] = { .type
= NLA_U8
},
1793 [NL80211_BSS_STATUS
] = { .type
= NLA_U32
},
1794 [NL80211_BSS_SEEN_MS_AGO
] = { .type
= NLA_U32
},
1795 [NL80211_BSS_BEACON_IES
] = { },
1798 if (!tb
[NL80211_ATTR_BSS
] ||
1799 nla_parse_nested(bss
, NL80211_BSS_MAX
, tb
[NL80211_ATTR_BSS
],
1801 !bss
[NL80211_BSS_BSSID
])
1806 if (bss
[NL80211_BSS_CAPABILITY
])
1807 caps
= nla_get_u16(bss
[NL80211_BSS_CAPABILITY
]);
1811 memset(sl
->e
, 0, sizeof(*sl
->e
));
1812 memcpy(sl
->e
->mac
, nla_data(bss
[NL80211_BSS_BSSID
]), 6);
1815 sl
->e
->mode
= IWINFO_OPMODE_ADHOC
;
1816 else if (caps
& (1<<0))
1817 sl
->e
->mode
= IWINFO_OPMODE_MASTER
;
1819 sl
->e
->mode
= IWINFO_OPMODE_MESHPOINT
;
1822 sl
->e
->crypto
.enabled
= 1;
1824 if (bss
[NL80211_BSS_FREQUENCY
])
1825 sl
->e
->channel
= nl80211_freq2channel(nla_get_u32(
1826 bss
[NL80211_BSS_FREQUENCY
]));
1828 if (bss
[NL80211_BSS_INFORMATION_ELEMENTS
])
1829 nl80211_get_scanlist_ie(bss
, sl
->e
);
1831 if (bss
[NL80211_BSS_SIGNAL_MBM
])
1834 (uint8_t)((int32_t)nla_get_u32(bss
[NL80211_BSS_SIGNAL_MBM
]) / 100);
1836 rssi
= sl
->e
->signal
- 0x100;
1840 else if (rssi
> -40)
1843 sl
->e
->quality
= (rssi
+ 110);
1844 sl
->e
->quality_max
= 70;
1847 if (sl
->e
->crypto
.enabled
&& !sl
->e
->crypto
.wpa_version
)
1849 sl
->e
->crypto
.auth_algs
= IWINFO_AUTH_OPEN
| IWINFO_AUTH_SHARED
;
1850 sl
->e
->crypto
.pair_ciphers
= IWINFO_CIPHER_WEP40
| IWINFO_CIPHER_WEP104
;
1859 static int nl80211_get_scanlist_nl(const char *ifname
, char *buf
, int *len
)
1861 struct nl80211_msg_conveyor
*req
;
1862 struct nl80211_scanlist sl
= { .e
= (struct iwinfo_scanlist_entry
*)buf
};
1864 req
= nl80211_msg(ifname
, NL80211_CMD_TRIGGER_SCAN
, 0);
1867 nl80211_send(req
, NULL
, NULL
);
1871 nl80211_wait("nl80211", "scan", NL80211_CMD_NEW_SCAN_RESULTS
);
1873 req
= nl80211_msg(ifname
, NL80211_CMD_GET_SCAN
, NLM_F_DUMP
);
1876 nl80211_send(req
, nl80211_get_scanlist_cb
, &sl
);
1880 *len
= sl
.len
* sizeof(struct iwinfo_scanlist_entry
);
1881 return *len
? 0 : -1;
1884 static int nl80211_get_scanlist(const char *ifname
, char *buf
, int *len
)
1886 int freq
, rssi
, qmax
, count
, mode
;
1888 char ssid
[128] = { 0 };
1889 char bssid
[18] = { 0 };
1890 char cipher
[256] = { 0 };
1892 /* Got a radioX pseudo interface, find some interface on it or create one */
1893 if (!strncmp(ifname
, "radio", 5))
1895 /* Reuse existing interface */
1896 if ((res
= nl80211_phy2ifname(ifname
)) != NULL
)
1898 return nl80211_get_scanlist(res
, buf
, len
);
1901 /* Need to spawn a temporary iface for scanning */
1902 else if ((res
= nl80211_ifadd(ifname
)) != NULL
)
1904 count
= nl80211_get_scanlist(res
, buf
, len
);
1910 struct iwinfo_scanlist_entry
*e
= (struct iwinfo_scanlist_entry
*)buf
;
1912 /* WPA supplicant */
1913 if ((res
= nl80211_wpactl_info(ifname
, "SCAN", "CTRL-EVENT-SCAN-RESULTS")))
1915 if ((res
= nl80211_wpactl_info(ifname
, "SCAN_RESULTS", NULL
)))
1917 nl80211_get_quality_max(ifname
, &qmax
);
1924 /* skip log lines */
1929 /* skip header line */
1933 if (sscanf(res
, "%17s %d %d %255s%*[ \t]%127[^\n]\n",
1934 bssid
, &freq
, &rssi
, cipher
, ssid
) < 5)
1936 /* skip malformed lines */
1940 e
->mac
[0] = strtol(&bssid
[0], NULL
, 16);
1941 e
->mac
[1] = strtol(&bssid
[3], NULL
, 16);
1942 e
->mac
[2] = strtol(&bssid
[6], NULL
, 16);
1943 e
->mac
[3] = strtol(&bssid
[9], NULL
, 16);
1944 e
->mac
[4] = strtol(&bssid
[12], NULL
, 16);
1945 e
->mac
[5] = strtol(&bssid
[15], NULL
, 16);
1948 memcpy(e
->ssid
, ssid
, min(strlen(ssid
), sizeof(e
->ssid
) - 1));
1950 /* Mode (assume master) */
1951 if (strstr(cipher
,"[MESH]"))
1952 e
->mode
= IWINFO_OPMODE_MESHPOINT
;
1954 e
->mode
= IWINFO_OPMODE_MASTER
;
1957 e
->channel
= nl80211_freq2channel(freq
);
1965 /* The cfg80211 wext compat layer assumes a signal range
1966 * of -110 dBm to -40 dBm, the quality value is derived
1967 * by adding 110 to the signal level */
1970 else if (rssi
> -40)
1973 e
->quality
= (rssi
+ 110);
1981 e
->quality_max
= qmax
;
1984 nl80211_get_scancrypto(cipher
, &e
->crypto
);
1989 memset(ssid
, 0, sizeof(ssid
));
1990 memset(bssid
, 0, sizeof(bssid
));
1991 memset(cipher
, 0, sizeof(cipher
));
1994 /* advance to next line */
1995 while( *res
&& *res
++ != '\n' );
1999 *len
= count
* sizeof(struct iwinfo_scanlist_entry
);
2004 /* station / ad-hoc / monitor scan */
2005 else if (!nl80211_get_mode(ifname
, &mode
) &&
2006 (mode
== IWINFO_OPMODE_ADHOC
||
2007 mode
== IWINFO_OPMODE_MASTER
||
2008 mode
== IWINFO_OPMODE_CLIENT
||
2009 mode
== IWINFO_OPMODE_MONITOR
) &&
2010 iwinfo_ifup(ifname
))
2012 return nl80211_get_scanlist_nl(ifname
, buf
, len
);
2018 /* Got a temp interface, don't create yet another one */
2019 if (!strncmp(ifname
, "tmp.", 4))
2021 if (!iwinfo_ifup(ifname
))
2024 nl80211_get_scanlist_nl(ifname
, buf
, len
);
2025 iwinfo_ifdown(ifname
);
2029 /* Spawn a new scan interface */
2032 if (!(res
= nl80211_ifadd(ifname
)))
2037 /* if we can take the new interface up, the driver supports an
2038 * additional interface and there's no need to tear down the ap */
2039 if (iwinfo_ifup(res
))
2041 nl80211_get_scanlist_nl(res
, buf
, len
);
2045 /* driver cannot create secondary interface, take down ap
2047 else if (iwinfo_ifdown(ifname
) && iwinfo_ifup(res
))
2049 nl80211_get_scanlist_nl(res
, buf
, len
);
2051 iwinfo_ifup(ifname
);
2052 nl80211_hostapd_hup(ifname
);
2064 static int nl80211_get_freqlist_cb(struct nl_msg
*msg
, void *arg
)
2066 int bands_remain
, freqs_remain
;
2068 struct nl80211_array_buf
*arr
= arg
;
2069 struct iwinfo_freqlist_entry
*e
= arr
->buf
;
2071 struct nlattr
**attr
= nl80211_parse(msg
);
2072 struct nlattr
*bands
[NL80211_BAND_ATTR_MAX
+ 1];
2073 struct nlattr
*freqs
[NL80211_FREQUENCY_ATTR_MAX
+ 1];
2074 struct nlattr
*band
, *freq
;
2076 static struct nla_policy freq_policy
[NL80211_FREQUENCY_ATTR_MAX
+ 1] = {
2077 [NL80211_FREQUENCY_ATTR_FREQ
] = { .type
= NLA_U32
},
2078 [NL80211_FREQUENCY_ATTR_DISABLED
] = { .type
= NLA_FLAG
},
2079 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN
] = { .type
= NLA_FLAG
},
2080 [NL80211_FREQUENCY_ATTR_NO_IBSS
] = { .type
= NLA_FLAG
},
2081 [NL80211_FREQUENCY_ATTR_RADAR
] = { .type
= NLA_FLAG
},
2082 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER
] = { .type
= NLA_U32
},
2085 nla_for_each_nested(band
, attr
[NL80211_ATTR_WIPHY_BANDS
], bands_remain
)
2087 nla_parse(bands
, NL80211_BAND_ATTR_MAX
,
2088 nla_data(band
), nla_len(band
), NULL
);
2090 nla_for_each_nested(freq
, bands
[NL80211_BAND_ATTR_FREQS
], freqs_remain
)
2092 nla_parse(freqs
, NL80211_FREQUENCY_ATTR_MAX
,
2093 nla_data(freq
), nla_len(freq
), NULL
);
2095 if (!freqs
[NL80211_FREQUENCY_ATTR_FREQ
] ||
2096 freqs
[NL80211_FREQUENCY_ATTR_DISABLED
])
2099 e
->mhz
= nla_get_u32(freqs
[NL80211_FREQUENCY_ATTR_FREQ
]);
2100 e
->channel
= nl80211_freq2channel(e
->mhz
);
2103 freqs
[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN
] ||
2104 freqs
[NL80211_FREQUENCY_ATTR_NO_IBSS
] ||
2105 freqs
[NL80211_FREQUENCY_ATTR_RADAR
]
2116 static int nl80211_get_freqlist(const char *ifname
, char *buf
, int *len
)
2118 struct nl80211_msg_conveyor
*req
;
2119 struct nl80211_array_buf arr
= { .buf
= buf
, .count
= 0 };
2121 req
= nl80211_msg(ifname
, NL80211_CMD_GET_WIPHY
, 0);
2124 nl80211_send(req
, nl80211_get_freqlist_cb
, &arr
);
2130 *len
= arr
.count
* sizeof(struct iwinfo_freqlist_entry
);
2137 static int nl80211_get_country_cb(struct nl_msg
*msg
, void *arg
)
2140 struct nlattr
**attr
= nl80211_parse(msg
);
2142 if (attr
[NL80211_ATTR_REG_ALPHA2
])
2143 memcpy(buf
, nla_data(attr
[NL80211_ATTR_REG_ALPHA2
]), 2);
2150 static int nl80211_get_country(const char *ifname
, char *buf
)
2153 struct nl80211_msg_conveyor
*req
;
2155 req
= nl80211_msg(ifname
, NL80211_CMD_GET_REG
, 0);
2158 nl80211_send(req
, nl80211_get_country_cb
, buf
);
2168 static int nl80211_get_countrylist(const char *ifname
, char *buf
, int *len
)
2171 struct iwinfo_country_entry
*e
= (struct iwinfo_country_entry
*)buf
;
2172 const struct iwinfo_iso3166_label
*l
;
2174 for (l
= IWINFO_ISO3166_NAMES
, count
= 0; l
->iso3166
; l
++, e
++, count
++)
2176 e
->iso3166
= l
->iso3166
;
2177 e
->ccode
[0] = (l
->iso3166
/ 256);
2178 e
->ccode
[1] = (l
->iso3166
% 256);
2181 *len
= (count
* sizeof(struct iwinfo_country_entry
));
2185 static int nl80211_get_hwmodelist_cb(struct nl_msg
*msg
, void *arg
)
2188 int bands_remain
, freqs_remain
;
2190 uint32_t vht_caps
= 0;
2191 struct nlattr
**attr
= nl80211_parse(msg
);
2192 struct nlattr
*bands
[NL80211_BAND_ATTR_MAX
+ 1];
2193 struct nlattr
*freqs
[NL80211_FREQUENCY_ATTR_MAX
+ 1];
2194 struct nlattr
*band
, *freq
;
2198 if (attr
[NL80211_ATTR_WIPHY_BANDS
])
2200 nla_for_each_nested(band
, attr
[NL80211_ATTR_WIPHY_BANDS
], bands_remain
)
2202 nla_parse(bands
, NL80211_BAND_ATTR_MAX
,
2203 nla_data(band
), nla_len(band
), NULL
);
2205 if (bands
[NL80211_BAND_ATTR_HT_CAPA
])
2206 caps
= nla_get_u16(bands
[NL80211_BAND_ATTR_HT_CAPA
]);
2208 /* Treat any nonzero capability as 11n */
2210 *modes
|= IWINFO_80211_N
;
2212 if (bands
[NL80211_BAND_ATTR_VHT_CAPA
])
2213 vht_caps
= nla_get_u32(bands
[NL80211_BAND_ATTR_VHT_CAPA
]);
2215 /* Treat any nonzero capability as 11ac */
2217 *modes
|= IWINFO_80211_AC
;
2219 nla_for_each_nested(freq
, bands
[NL80211_BAND_ATTR_FREQS
],
2222 nla_parse(freqs
, NL80211_FREQUENCY_ATTR_MAX
,
2223 nla_data(freq
), nla_len(freq
), NULL
);
2225 if (!freqs
[NL80211_FREQUENCY_ATTR_FREQ
])
2228 if (nla_get_u32(freqs
[NL80211_FREQUENCY_ATTR_FREQ
]) < 2485)
2230 *modes
|= IWINFO_80211_B
;
2231 *modes
|= IWINFO_80211_G
;
2233 else if (!(*modes
& IWINFO_80211_AC
))
2235 *modes
|= IWINFO_80211_A
;
2244 static int nl80211_get_hwmodelist(const char *ifname
, int *buf
)
2246 struct nl80211_msg_conveyor
*req
;
2248 req
= nl80211_msg(ifname
, NL80211_CMD_GET_WIPHY
, 0);
2251 nl80211_send(req
, nl80211_get_hwmodelist_cb
, buf
);
2255 return *buf
? 0 : -1;
2258 static int nl80211_get_ifcomb_cb(struct nl_msg
*msg
, void *arg
)
2260 struct nlattr
**attr
= nl80211_parse(msg
);
2261 struct nlattr
*comb
;
2263 int comb_rem
, limit_rem
, mode_rem
;
2266 if (!attr
[NL80211_ATTR_INTERFACE_COMBINATIONS
])
2269 nla_for_each_nested(comb
, attr
[NL80211_ATTR_INTERFACE_COMBINATIONS
], comb_rem
)
2271 static struct nla_policy iface_combination_policy
[NUM_NL80211_IFACE_COMB
] = {
2272 [NL80211_IFACE_COMB_LIMITS
] = { .type
= NLA_NESTED
},
2273 [NL80211_IFACE_COMB_MAXNUM
] = { .type
= NLA_U32
},
2275 struct nlattr
*tb_comb
[NUM_NL80211_IFACE_COMB
];
2276 static struct nla_policy iface_limit_policy
[NUM_NL80211_IFACE_LIMIT
] = {
2277 [NL80211_IFACE_LIMIT_TYPES
] = { .type
= NLA_NESTED
},
2278 [NL80211_IFACE_LIMIT_MAX
] = { .type
= NLA_U32
},
2280 struct nlattr
*tb_limit
[NUM_NL80211_IFACE_LIMIT
];
2281 struct nlattr
*limit
;
2283 nla_parse_nested(tb_comb
, NL80211_BAND_ATTR_MAX
, comb
, iface_combination_policy
);
2285 if (!tb_comb
[NL80211_IFACE_COMB_LIMITS
])
2288 nla_for_each_nested(limit
, tb_comb
[NL80211_IFACE_COMB_LIMITS
], limit_rem
)
2290 struct nlattr
*mode
;
2292 nla_parse_nested(tb_limit
, NUM_NL80211_IFACE_LIMIT
, limit
, iface_limit_policy
);
2294 if (!tb_limit
[NL80211_IFACE_LIMIT_TYPES
] ||
2295 !tb_limit
[NL80211_IFACE_LIMIT_MAX
])
2298 if (nla_get_u32(tb_limit
[NL80211_IFACE_LIMIT_MAX
]) < 2)
2301 nla_for_each_nested(mode
, tb_limit
[NL80211_IFACE_LIMIT_TYPES
], mode_rem
) {
2302 if (nla_type(mode
) == NL80211_IFTYPE_AP
)
2311 static int nl80211_get_mbssid_support(const char *ifname
, int *buf
)
2313 struct nl80211_msg_conveyor
*req
;
2315 req
= nl80211_msg(ifname
, NL80211_CMD_GET_WIPHY
, 0);
2319 nl80211_send(req
, nl80211_get_ifcomb_cb
, buf
);
2324 static int nl80211_get_hardware_id(const char *ifname
, char *buf
)
2329 /* Got a radioX pseudo interface, find some interface on it or create one */
2330 if (!strncmp(ifname
, "radio", 5))
2332 /* Reuse existing interface */
2333 if ((res
= nl80211_phy2ifname(ifname
)) != NULL
)
2335 rv
= wext_ops
.hardware_id(res
, buf
);
2338 /* Need to spawn a temporary iface for finding IDs */
2339 else if ((res
= nl80211_ifadd(ifname
)) != NULL
)
2341 rv
= wext_ops
.hardware_id(res
, buf
);
2347 rv
= wext_ops
.hardware_id(ifname
, buf
);
2350 /* Failed to obtain hardware IDs, search board config */
2353 rv
= iwinfo_hardware_id_from_mtd((struct iwinfo_hardware_id
*)buf
);
2359 static const struct iwinfo_hardware_entry
*
2360 nl80211_get_hardware_entry(const char *ifname
)
2362 struct iwinfo_hardware_id id
;
2364 if (nl80211_get_hardware_id(ifname
, (char *)&id
))
2367 return iwinfo_hardware(&id
);
2370 static int nl80211_get_hardware_name(const char *ifname
, char *buf
)
2372 const struct iwinfo_hardware_entry
*hw
;
2374 if (!(hw
= nl80211_get_hardware_entry(ifname
)))
2375 sprintf(buf
, "Generic MAC80211");
2377 sprintf(buf
, "%s %s", hw
->vendor_name
, hw
->device_name
);
2382 static int nl80211_get_txpower_offset(const char *ifname
, int *buf
)
2384 const struct iwinfo_hardware_entry
*hw
;
2386 if (!(hw
= nl80211_get_hardware_entry(ifname
)))
2389 *buf
= hw
->txpower_offset
;
2393 static int nl80211_get_frequency_offset(const char *ifname
, int *buf
)
2395 const struct iwinfo_hardware_entry
*hw
;
2397 if (!(hw
= nl80211_get_hardware_entry(ifname
)))
2400 *buf
= hw
->frequency_offset
;
2404 const struct iwinfo_ops nl80211_ops
= {
2406 .probe
= nl80211_probe
,
2407 .channel
= nl80211_get_channel
,
2408 .frequency
= nl80211_get_frequency
,
2409 .frequency_offset
= nl80211_get_frequency_offset
,
2410 .txpower
= nl80211_get_txpower
,
2411 .txpower_offset
= nl80211_get_txpower_offset
,
2412 .bitrate
= nl80211_get_bitrate
,
2413 .signal
= nl80211_get_signal
,
2414 .noise
= nl80211_get_noise
,
2415 .quality
= nl80211_get_quality
,
2416 .quality_max
= nl80211_get_quality_max
,
2417 .mbssid_support
= nl80211_get_mbssid_support
,
2418 .hwmodelist
= nl80211_get_hwmodelist
,
2419 .mode
= nl80211_get_mode
,
2420 .ssid
= nl80211_get_ssid
,
2421 .bssid
= nl80211_get_bssid
,
2422 .country
= nl80211_get_country
,
2423 .hardware_id
= nl80211_get_hardware_id
,
2424 .hardware_name
= nl80211_get_hardware_name
,
2425 .encryption
= nl80211_get_encryption
,
2426 .phyname
= nl80211_get_phyname
,
2427 .assoclist
= nl80211_get_assoclist
,
2428 .txpwrlist
= nl80211_get_txpwrlist
,
2429 .scanlist
= nl80211_get_scanlist
,
2430 .freqlist
= nl80211_get_freqlist
,
2431 .countrylist
= nl80211_get_countrylist
,
2432 .close
= nl80211_close