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.
25 #include "iwinfo_nl80211.h"
27 #define min(x, y) ((x) < (y)) ? (x) : (y)
29 static struct nl80211_state
*nls
= NULL
;
31 static void nl80211_close(void)
36 genl_family_put(nls
->nlctrl
);
39 genl_family_put(nls
->nl80211
);
42 nl_socket_free(nls
->nl_sock
);
45 nl_cache_free(nls
->nl_cache
);
52 static int nl80211_init(void)
58 nls
= malloc(sizeof(struct nl80211_state
));
64 memset(nls
, 0, sizeof(*nls
));
66 nls
->nl_sock
= nl_socket_alloc();
72 if (genl_connect(nls
->nl_sock
)) {
77 fd
= nl_socket_get_fd(nls
->nl_sock
);
78 if (fcntl(fd
, F_SETFD
, fcntl(fd
, F_GETFD
) | FD_CLOEXEC
) < 0) {
83 if (genl_ctrl_alloc_cache(nls
->nl_sock
, &nls
->nl_cache
)) {
88 nls
->nl80211
= genl_ctrl_search_by_name(nls
->nl_cache
, "nl80211");
94 nls
->nlctrl
= genl_ctrl_search_by_name(nls
->nl_cache
, "nlctrl");
109 static int nl80211_readint(const char *path
)
115 if ((fd
= open(path
, O_RDONLY
)) > -1)
117 if (read(fd
, buffer
, sizeof(buffer
)) > 0)
127 static int nl80211_msg_error(struct sockaddr_nl
*nla
,
128 struct nlmsgerr
*err
, void *arg
)
135 static int nl80211_msg_finish(struct nl_msg
*msg
, void *arg
)
142 static int nl80211_msg_ack(struct nl_msg
*msg
, void *arg
)
149 static int nl80211_msg_response(struct nl_msg
*msg
, void *arg
)
154 static void nl80211_free(struct nl80211_msg_conveyor
*cv
)
169 static struct nl80211_msg_conveyor
* nl80211_new(struct genl_family
*family
,
172 static struct nl80211_msg_conveyor cv
;
174 struct nl_msg
*req
= NULL
;
175 struct nl_cb
*cb
= NULL
;
181 cb
= nl_cb_alloc(NL_CB_DEFAULT
);
185 genlmsg_put(req
, 0, 0, genl_family_get_id(family
), 0, flags
, cmd
, 0);
203 static struct nl80211_msg_conveyor
* nl80211_ctl(int cmd
, int flags
)
205 if (nl80211_init() < 0)
208 return nl80211_new(nls
->nlctrl
, cmd
, flags
);
211 static struct nl80211_msg_conveyor
* nl80211_msg(const char *ifname
,
214 int ifidx
= -1, phyidx
= -1;
215 struct nl80211_msg_conveyor
*cv
;
217 if (nl80211_init() < 0)
220 if (!strncmp(ifname
, "phy", 3))
221 phyidx
= atoi(&ifname
[3]);
222 else if (!strncmp(ifname
, "radio", 5))
223 phyidx
= atoi(&ifname
[5]);
224 else if (!strncmp(ifname
, "mon.", 4))
225 ifidx
= if_nametoindex(&ifname
[4]);
227 ifidx
= if_nametoindex(ifname
);
229 if ((ifidx
< 0) && (phyidx
< 0))
232 cv
= nl80211_new(nls
->nl80211
, cmd
, flags
);
237 NLA_PUT_U32(cv
->msg
, NL80211_ATTR_IFINDEX
, ifidx
);
240 NLA_PUT_U32(cv
->msg
, NL80211_ATTR_WIPHY
, phyidx
);
249 static struct nl80211_msg_conveyor
* nl80211_send(
250 struct nl80211_msg_conveyor
*cv
,
251 int (*cb_func
)(struct nl_msg
*, void *), void *cb_arg
253 static struct nl80211_msg_conveyor rcv
;
257 nl_cb_set(cv
->cb
, NL_CB_VALID
, NL_CB_CUSTOM
, cb_func
, cb_arg
);
259 nl_cb_set(cv
->cb
, NL_CB_VALID
, NL_CB_CUSTOM
, nl80211_msg_response
, &rcv
);
261 if (nl_send_auto_complete(nls
->nl_sock
, cv
->msg
) < 0)
264 nl_cb_err(cv
->cb
, NL_CB_CUSTOM
, nl80211_msg_error
, &err
);
265 nl_cb_set(cv
->cb
, NL_CB_FINISH
, NL_CB_CUSTOM
, nl80211_msg_finish
, &err
);
266 nl_cb_set(cv
->cb
, NL_CB_ACK
, NL_CB_CUSTOM
, nl80211_msg_ack
, &err
);
269 nl_recvmsgs(nls
->nl_sock
, cv
->cb
);
280 static struct nlattr
** nl80211_parse(struct nl_msg
*msg
)
282 struct genlmsghdr
*gnlh
= nlmsg_data(nlmsg_hdr(msg
));
283 static struct nlattr
*attr
[NL80211_ATTR_MAX
+ 1];
285 nla_parse(attr
, NL80211_ATTR_MAX
, genlmsg_attrdata(gnlh
, 0),
286 genlmsg_attrlen(gnlh
, 0), NULL
);
292 static int nl80211_subscribe_cb(struct nl_msg
*msg
, void *arg
)
294 struct nl80211_group_conveyor
*cv
= arg
;
296 struct nlattr
**attr
= nl80211_parse(msg
);
297 struct nlattr
*mgrpinfo
[CTRL_ATTR_MCAST_GRP_MAX
+ 1];
301 if (!attr
[CTRL_ATTR_MCAST_GROUPS
])
304 nla_for_each_nested(mgrp
, attr
[CTRL_ATTR_MCAST_GROUPS
], mgrpidx
)
306 nla_parse(mgrpinfo
, CTRL_ATTR_MCAST_GRP_MAX
,
307 nla_data(mgrp
), nla_len(mgrp
), NULL
);
309 if (mgrpinfo
[CTRL_ATTR_MCAST_GRP_ID
] &&
310 mgrpinfo
[CTRL_ATTR_MCAST_GRP_NAME
] &&
311 !strncmp(nla_data(mgrpinfo
[CTRL_ATTR_MCAST_GRP_NAME
]),
312 cv
->name
, nla_len(mgrpinfo
[CTRL_ATTR_MCAST_GRP_NAME
])))
314 cv
->id
= nla_get_u32(mgrpinfo
[CTRL_ATTR_MCAST_GRP_ID
]);
322 static int nl80211_subscribe(const char *family
, const char *group
)
324 struct nl80211_group_conveyor cv
= { .name
= group
, .id
= -ENOENT
};
325 struct nl80211_msg_conveyor
*req
;
327 req
= nl80211_ctl(CTRL_CMD_GETFAMILY
, 0);
330 NLA_PUT_STRING(req
->msg
, CTRL_ATTR_FAMILY_NAME
, family
);
331 nl80211_send(req
, nl80211_subscribe_cb
, &cv
);
337 return nl_socket_add_membership(nls
->nl_sock
, cv
.id
);
341 static int nl80211_wait_cb(struct nl_msg
*msg
, void *arg
)
343 struct nl80211_event_conveyor
*cv
= arg
;
344 struct genlmsghdr
*gnlh
= nlmsg_data(nlmsg_hdr(msg
));
346 if (gnlh
->cmd
== cv
->wait
)
347 cv
->recv
= gnlh
->cmd
;
352 static int nl80211_wait_seq_check(struct nl_msg
*msg
, void *arg
)
357 static int nl80211_wait(const char *family
, const char *group
, int cmd
)
359 struct nl80211_event_conveyor cv
= { .wait
= cmd
};
362 if (nl80211_subscribe(family
, group
))
365 cb
= nl_cb_alloc(NL_CB_DEFAULT
);
370 nl_cb_set(cb
, NL_CB_SEQ_CHECK
, NL_CB_CUSTOM
, nl80211_wait_seq_check
, NULL
);
371 nl_cb_set(cb
, NL_CB_VALID
, NL_CB_CUSTOM
, nl80211_wait_cb
, &cv
);
374 nl_recvmsgs(nls
->nl_sock
, cb
);
382 static int nl80211_freq2channel(int freq
)
386 else if (freq
< 2484)
387 return (freq
- 2407) / 5;
388 else if (freq
>= 4910 && freq
<= 4980)
389 return (freq
- 4000) / 5;
391 return (freq
- 5000) / 5;
394 static int nl80211_channel2freq(int channel
, const char *band
)
396 if (!band
|| band
[0] != 'a')
400 else if (channel
< 14)
401 return (channel
* 5) + 2407;
405 if (channel
>= 182 && channel
<= 196)
406 return (channel
* 5) + 4000;
408 return (channel
* 5) + 5000;
414 static char * nl80211_getval(const char *ifname
, const char *buf
, const char *key
)
417 char lkey
[64] = { 0 };
418 const char *ln
= buf
;
419 static char lval
[256] = { 0 };
421 int matched_if
= ifname
? 0 : 1;
424 for( i
= 0, len
= strlen(buf
); i
< len
; i
++ )
426 if (!lkey
[0] && (buf
[i
] == ' ' || buf
[i
] == '\t'))
430 else if (!lkey
[0] && (buf
[i
] == '='))
432 if ((&buf
[i
] - ln
) > 0)
433 memcpy(lkey
, ln
, min(sizeof(lkey
) - 1, &buf
[i
] - ln
));
435 else if (buf
[i
] == '\n')
439 memcpy(lval
, ln
+ strlen(lkey
) + 1,
440 min(sizeof(lval
) - 1, &buf
[i
] - ln
- strlen(lkey
) - 1));
442 if ((ifname
!= NULL
) &&
443 (!strcmp(lkey
, "interface") || !strcmp(lkey
, "bss")) )
445 matched_if
= !strcmp(lval
, ifname
);
447 else if (matched_if
&& !strcmp(lkey
, key
))
454 memset(lkey
, 0, sizeof(lkey
));
455 memset(lval
, 0, sizeof(lval
));
462 static int nl80211_ifname2phy_cb(struct nl_msg
*msg
, void *arg
)
465 struct nlattr
**attr
= nl80211_parse(msg
);
467 if (attr
[NL80211_ATTR_WIPHY_NAME
])
468 memcpy(buf
, nla_data(attr
[NL80211_ATTR_WIPHY_NAME
]),
469 nla_len(attr
[NL80211_ATTR_WIPHY_NAME
]));
476 static char * nl80211_ifname2phy(const char *ifname
)
478 static char phy
[32] = { 0 };
479 struct nl80211_msg_conveyor
*req
;
481 memset(phy
, 0, sizeof(phy
));
483 req
= nl80211_msg(ifname
, NL80211_CMD_GET_WIPHY
, 0);
486 nl80211_send(req
, nl80211_ifname2phy_cb
, phy
);
490 return phy
[0] ? phy
: NULL
;
493 static char * nl80211_phy2ifname(const char *ifname
)
495 int fd
, ifidx
= -1, cifidx
= -1, phyidx
= -1;
497 static char nif
[IFNAMSIZ
] = { 0 };
504 else if (!strncmp(ifname
, "phy", 3))
505 phyidx
= atoi(&ifname
[3]);
506 else if (!strncmp(ifname
, "radio", 5))
507 phyidx
= atoi(&ifname
[5]);
509 memset(nif
, 0, sizeof(nif
));
513 if ((d
= opendir("/sys/class/net")) != NULL
)
515 while ((e
= readdir(d
)) != NULL
)
517 snprintf(buffer
, sizeof(buffer
),
518 "/sys/class/net/%s/phy80211/index", e
->d_name
);
520 if (nl80211_readint(buffer
) == phyidx
)
522 snprintf(buffer
, sizeof(buffer
),
523 "/sys/class/net/%s/ifindex", e
->d_name
);
525 if ((cifidx
= nl80211_readint(buffer
)) >= 0 &&
526 ((ifidx
< 0) || (cifidx
< ifidx
)))
529 strncpy(nif
, e
->d_name
, sizeof(nif
));
538 return nif
[0] ? nif
: NULL
;
541 static int nl80211_get_mode_cb(struct nl_msg
*msg
, void *arg
)
544 struct nlattr
**tb
= nl80211_parse(msg
);
545 const int ifmodes
[NL80211_IFTYPE_MAX
+ 1] = {
546 IWINFO_OPMODE_UNKNOWN
, /* unspecified */
547 IWINFO_OPMODE_ADHOC
, /* IBSS */
548 IWINFO_OPMODE_CLIENT
, /* managed */
549 IWINFO_OPMODE_MASTER
, /* AP */
550 IWINFO_OPMODE_AP_VLAN
, /* AP/VLAN */
551 IWINFO_OPMODE_WDS
, /* WDS */
552 IWINFO_OPMODE_MONITOR
, /* monitor */
553 IWINFO_OPMODE_MESHPOINT
, /* mesh point */
554 IWINFO_OPMODE_P2P_CLIENT
, /* P2P-client */
555 IWINFO_OPMODE_P2P_GO
, /* P2P-GO */
558 if (tb
[NL80211_ATTR_IFTYPE
])
559 *mode
= ifmodes
[nla_get_u32(tb
[NL80211_ATTR_IFTYPE
])];
565 static int nl80211_get_mode(const char *ifname
, int *buf
)
568 struct nl80211_msg_conveyor
*req
;
570 res
= nl80211_phy2ifname(ifname
);
571 req
= nl80211_msg(res
? res
: ifname
, NL80211_CMD_GET_INTERFACE
, 0);
572 *buf
= IWINFO_OPMODE_UNKNOWN
;
576 nl80211_send(req
, nl80211_get_mode_cb
, buf
);
580 return (*buf
== IWINFO_OPMODE_UNKNOWN
) ? -1 : 0;
583 static char * nl80211_hostapd_info(const char *ifname
)
587 char path
[32] = { 0 };
588 static char buf
[4096] = { 0 };
591 if (nl80211_get_mode(ifname
, &mode
))
594 if ((mode
== IWINFO_OPMODE_MASTER
|| mode
== IWINFO_OPMODE_AP_VLAN
) &&
595 (phy
= nl80211_ifname2phy(ifname
)) != NULL
)
597 snprintf(path
, sizeof(path
), "/var/run/hostapd-%s.conf", phy
);
599 if ((conf
= fopen(path
, "r")) != NULL
)
601 fread(buf
, sizeof(buf
) - 1, 1, conf
);
611 static inline int nl80211_wpactl_recv(int sock
, char *buf
, int blen
)
614 struct timeval tv
= { 2, 0 };
619 memset(buf
, 0, blen
);
622 if (select(sock
+ 1, &rfds
, NULL
, NULL
, &tv
) < 0)
625 if (!FD_ISSET(sock
, &rfds
))
628 return recv(sock
, buf
, blen
, 0);
631 static char * nl80211_wpactl_info(const char *ifname
, const char *cmd
,
637 size_t remote_length
, local_length
;
638 static char buffer
[10240] = { 0 };
640 struct sockaddr_un local
= { 0 };
641 struct sockaddr_un remote
= { 0 };
644 sock
= socket(PF_UNIX
, SOCK_DGRAM
, 0);
648 remote
.sun_family
= AF_UNIX
;
649 remote_length
= sizeof(remote
.sun_family
) + sprintf(remote
.sun_path
,
650 "/var/run/wpa_supplicant-%s/%s", ifname
, ifname
);
652 if (fcntl(sock
, F_SETFD
, fcntl(sock
, F_GETFD
) | FD_CLOEXEC
) < 0)
655 if (connect(sock
, (struct sockaddr
*) &remote
, remote_length
))
657 remote_length
= sizeof(remote
.sun_family
) + sprintf(remote
.sun_path
,
658 "/var/run/wpa_supplicant/%s", ifname
);
660 if (connect(sock
, (struct sockaddr
*) &remote
, remote_length
))
664 local
.sun_family
= AF_UNIX
;
665 local_length
= sizeof(local
.sun_family
) +
666 sprintf(local
.sun_path
, "/var/run/iwinfo-%s-%d", ifname
, getpid());
668 if (bind(sock
, (struct sockaddr
*) &local
, local_length
))
674 send(sock
, "ATTACH", 6, 0);
676 if (nl80211_wpactl_recv(sock
, buffer
, sizeof(buffer
)-1) <= 0)
681 send(sock
, cmd
, strlen(cmd
), 0);
683 /* we might have to scan up to 72 channels / 256ms per channel */
684 /* this makes up to 18.5s hence 10 tries */
685 while( numtry
++ < 10 )
689 /* make sure there is a terminating nul byte */
690 if (nl80211_wpactl_recv(sock
, buffer
, sizeof(buffer
)-1) <= 0)
698 if ((!event
&& buffer
[0] != '<') || (event
&& strstr(buffer
, event
)))
701 /* there may be more than max(numtry) BSS-ADDED events */
702 /* ignore them similar to wpa_cli */
703 if (buffer
[0] == '<' &&
704 (bracket
=strchr(buffer
,'>')) != NULL
&&
705 strncmp(bracket
+1,"CTRL-EVENT-BSS-ADDED",20) == 0)
714 if (local
.sun_family
)
715 unlink(local
.sun_path
);
720 static char * nl80211_ifadd(const char *ifname
)
723 char *rv
= NULL
, path
[PATH_MAX
];
724 static char nif
[IFNAMSIZ
] = { 0 };
725 struct nl80211_msg_conveyor
*req
, *res
;
728 req
= nl80211_msg(ifname
, NL80211_CMD_NEW_INTERFACE
, 0);
731 snprintf(nif
, sizeof(nif
), "tmp.%s", ifname
);
733 NLA_PUT_STRING(req
->msg
, NL80211_ATTR_IFNAME
, nif
);
734 NLA_PUT_U32(req
->msg
, NL80211_ATTR_IFTYPE
, NL80211_IFTYPE_STATION
);
736 nl80211_send(req
, NULL
, NULL
);
738 snprintf(path
, sizeof(path
) - 1,
739 "/proc/sys/net/ipv6/conf/%s/disable_ipv6", nif
);
741 if ((sysfs
= fopen(path
, "w")) != NULL
)
743 fwrite("0\n", 1, 2, sysfs
);
756 static void nl80211_ifdel(const char *ifname
)
758 struct nl80211_msg_conveyor
*req
;
760 req
= nl80211_msg(ifname
, NL80211_CMD_DEL_INTERFACE
, 0);
763 NLA_PUT_STRING(req
->msg
, NL80211_ATTR_IFNAME
, ifname
);
765 nl80211_send(req
, NULL
, NULL
);
772 static void nl80211_hostapd_hup(const char *ifname
)
776 char *phy
= nl80211_ifname2phy(ifname
);
780 snprintf(buf
, sizeof(buf
), "/var/run/wifi-%s.pid", phy
);
781 if ((fd
= open(buf
, O_RDONLY
)) > 0)
783 if (read(fd
, buf
, sizeof(buf
)) > 0)
795 static int nl80211_probe(const char *ifname
)
797 return !!nl80211_ifname2phy(ifname
);
800 struct nl80211_ssid_bssid
{
802 unsigned char bssid
[7];
805 static int nl80211_get_ssid_bssid_cb(struct nl_msg
*msg
, void *arg
)
809 struct nl80211_ssid_bssid
*sb
= arg
;
810 struct nlattr
**tb
= nl80211_parse(msg
);
811 struct nlattr
*bss
[NL80211_BSS_MAX
+ 1];
813 static struct nla_policy bss_policy
[NL80211_BSS_MAX
+ 1] = {
814 [NL80211_BSS_INFORMATION_ELEMENTS
] = { },
815 [NL80211_BSS_STATUS
] = { .type
= NLA_U32
},
818 if (!tb
[NL80211_ATTR_BSS
] ||
819 nla_parse_nested(bss
, NL80211_BSS_MAX
, tb
[NL80211_ATTR_BSS
],
821 !bss
[NL80211_BSS_BSSID
] ||
822 !bss
[NL80211_BSS_STATUS
] ||
823 !bss
[NL80211_BSS_INFORMATION_ELEMENTS
])
828 switch (nla_get_u32(bss
[NL80211_BSS_STATUS
]))
830 case NL80211_BSS_STATUS_ASSOCIATED
:
831 case NL80211_BSS_STATUS_AUTHENTICATED
:
832 case NL80211_BSS_STATUS_IBSS_JOINED
:
836 ie
= nla_data(bss
[NL80211_BSS_INFORMATION_ELEMENTS
]);
837 ielen
= nla_len(bss
[NL80211_BSS_INFORMATION_ELEMENTS
]);
839 while (ielen
>= 2 && ielen
>= ie
[1])
843 memcpy(sb
->ssid
, ie
+ 2, min(ie
[1], IWINFO_ESSID_MAX_SIZE
));
854 memcpy(sb
->bssid
+ 1, nla_data(bss
[NL80211_BSS_BSSID
]), 6);
863 static int nl80211_get_ssid(const char *ifname
, char *buf
)
866 struct nl80211_msg_conveyor
*req
;
867 struct nl80211_ssid_bssid sb
;
869 /* try to find ssid from scan dump results */
870 res
= nl80211_phy2ifname(ifname
);
871 req
= nl80211_msg(res
? res
: ifname
, NL80211_CMD_GET_SCAN
, NLM_F_DUMP
);
878 nl80211_send(req
, nl80211_get_ssid_bssid_cb
, &sb
);
882 /* failed, try to find from hostapd info */
884 (res
= nl80211_hostapd_info(ifname
)) &&
885 (res
= nl80211_getval(ifname
, res
, "ssid")))
887 memcpy(buf
, res
, strlen(res
));
890 return (*buf
== 0) ? -1 : 0;
893 static int nl80211_get_bssid(const char *ifname
, char *buf
)
896 struct nl80211_msg_conveyor
*req
;
897 struct nl80211_ssid_bssid sb
;
899 /* try to find bssid from scan dump results */
900 res
= nl80211_phy2ifname(ifname
);
901 req
= nl80211_msg(res
? res
: ifname
, NL80211_CMD_GET_SCAN
, NLM_F_DUMP
);
908 nl80211_send(req
, nl80211_get_ssid_bssid_cb
, &sb
);
912 /* failed, try to find mac from hostapd info */
913 if ((sb
.bssid
[0] == 0) &&
914 (res
= nl80211_hostapd_info(ifname
)) &&
915 (res
= nl80211_getval(ifname
, res
, "bssid")))
918 sb
.bssid
[1] = strtol(&res
[0], NULL
, 16);
919 sb
.bssid
[2] = strtol(&res
[3], NULL
, 16);
920 sb
.bssid
[3] = strtol(&res
[6], NULL
, 16);
921 sb
.bssid
[4] = strtol(&res
[9], NULL
, 16);
922 sb
.bssid
[5] = strtol(&res
[12], NULL
, 16);
923 sb
.bssid
[6] = strtol(&res
[15], NULL
, 16);
928 sprintf(buf
, "%02X:%02X:%02X:%02X:%02X:%02X",
929 sb
.bssid
[1], sb
.bssid
[2], sb
.bssid
[3],
930 sb
.bssid
[4], sb
.bssid
[5], sb
.bssid
[6]);
939 static int nl80211_get_frequency_scan_cb(struct nl_msg
*msg
, void *arg
)
942 struct nlattr
**attr
= nl80211_parse(msg
);
943 struct nlattr
*binfo
[NL80211_BSS_MAX
+ 1];
945 static struct nla_policy bss_policy
[NL80211_BSS_MAX
+ 1] = {
946 [NL80211_BSS_FREQUENCY
] = { .type
= NLA_U32
},
947 [NL80211_BSS_STATUS
] = { .type
= NLA_U32
},
950 if (attr
[NL80211_ATTR_BSS
] &&
951 !nla_parse_nested(binfo
, NL80211_BSS_MAX
,
952 attr
[NL80211_ATTR_BSS
], bss_policy
))
954 if (binfo
[NL80211_BSS_STATUS
] && binfo
[NL80211_BSS_FREQUENCY
])
955 *freq
= nla_get_u32(binfo
[NL80211_BSS_FREQUENCY
]);
961 static int nl80211_get_frequency_info_cb(struct nl_msg
*msg
, void *arg
)
964 struct nlattr
**tb
= nl80211_parse(msg
);
966 if (tb
[NL80211_ATTR_WIPHY_FREQ
])
967 *freq
= nla_get_u32(tb
[NL80211_ATTR_WIPHY_FREQ
]);
972 static int nl80211_get_frequency(const char *ifname
, int *buf
)
976 struct nl80211_msg_conveyor
*req
;
978 /* try to find frequency from interface info */
979 res
= nl80211_phy2ifname(ifname
);
980 req
= nl80211_msg(res
? res
: ifname
, NL80211_CMD_GET_INTERFACE
, 0);
985 nl80211_send(req
, nl80211_get_frequency_info_cb
, buf
);
989 /* failed, try to find frequency from hostapd info */
991 (res
= nl80211_hostapd_info(ifname
)) &&
992 (channel
= nl80211_getval(NULL
, res
, "channel")))
995 *buf
= nl80211_channel2freq(chn
, nl80211_getval(NULL
, res
, "hw_mode"));
999 /* failed, try to find frequency from scan results */
1002 res
= nl80211_phy2ifname(ifname
);
1003 req
= nl80211_msg(res
? res
: ifname
, NL80211_CMD_GET_SCAN
,
1008 nl80211_send(req
, nl80211_get_frequency_scan_cb
, buf
);
1014 return (*buf
== 0) ? -1 : 0;
1017 static int nl80211_get_channel(const char *ifname
, int *buf
)
1019 if (!nl80211_get_frequency(ifname
, buf
))
1021 *buf
= nl80211_freq2channel(*buf
);
1029 static int nl80211_get_txpower(const char *ifname
, int *buf
)
1033 char path
[PATH_MAX
];
1035 res
= nl80211_ifname2phy(ifname
);
1036 snprintf(path
, sizeof(path
), "/sys/kernel/debug/ieee80211/%s/power",
1037 res
? res
: ifname
);
1039 if ((*buf
= nl80211_readint(path
)) > -1)
1043 return wext_ops
.txpower(ifname
, buf
);
1047 static int nl80211_fill_signal_cb(struct nl_msg
*msg
, void *arg
)
1051 struct nl80211_rssi_rate
*rr
= arg
;
1052 struct nlattr
**attr
= nl80211_parse(msg
);
1053 struct nlattr
*sinfo
[NL80211_STA_INFO_MAX
+ 1];
1054 struct nlattr
*rinfo
[NL80211_RATE_INFO_MAX
+ 1];
1056 static struct nla_policy stats_policy
[NL80211_STA_INFO_MAX
+ 1] = {
1057 [NL80211_STA_INFO_INACTIVE_TIME
] = { .type
= NLA_U32
},
1058 [NL80211_STA_INFO_RX_BYTES
] = { .type
= NLA_U32
},
1059 [NL80211_STA_INFO_TX_BYTES
] = { .type
= NLA_U32
},
1060 [NL80211_STA_INFO_RX_PACKETS
] = { .type
= NLA_U32
},
1061 [NL80211_STA_INFO_TX_PACKETS
] = { .type
= NLA_U32
},
1062 [NL80211_STA_INFO_SIGNAL
] = { .type
= NLA_U8
},
1063 [NL80211_STA_INFO_TX_BITRATE
] = { .type
= NLA_NESTED
},
1064 [NL80211_STA_INFO_LLID
] = { .type
= NLA_U16
},
1065 [NL80211_STA_INFO_PLID
] = { .type
= NLA_U16
},
1066 [NL80211_STA_INFO_PLINK_STATE
] = { .type
= NLA_U8
},
1069 static struct nla_policy rate_policy
[NL80211_RATE_INFO_MAX
+ 1] = {
1070 [NL80211_RATE_INFO_BITRATE
] = { .type
= NLA_U16
},
1071 [NL80211_RATE_INFO_MCS
] = { .type
= NLA_U8
},
1072 [NL80211_RATE_INFO_40_MHZ_WIDTH
] = { .type
= NLA_FLAG
},
1073 [NL80211_RATE_INFO_SHORT_GI
] = { .type
= NLA_FLAG
},
1076 if (attr
[NL80211_ATTR_STA_INFO
])
1078 if (!nla_parse_nested(sinfo
, NL80211_STA_INFO_MAX
,
1079 attr
[NL80211_ATTR_STA_INFO
], stats_policy
))
1081 if (sinfo
[NL80211_STA_INFO_SIGNAL
])
1083 dbm
= nla_get_u8(sinfo
[NL80211_STA_INFO_SIGNAL
]);
1084 rr
->rssi
= rr
->rssi
? (int8_t)((rr
->rssi
+ dbm
) / 2) : dbm
;
1087 if (sinfo
[NL80211_STA_INFO_TX_BITRATE
])
1089 if (!nla_parse_nested(rinfo
, NL80211_RATE_INFO_MAX
,
1090 sinfo
[NL80211_STA_INFO_TX_BITRATE
],
1093 if (rinfo
[NL80211_RATE_INFO_BITRATE
])
1095 mbit
= nla_get_u16(rinfo
[NL80211_RATE_INFO_BITRATE
]);
1097 ? (int16_t)((rr
->rate
+ mbit
) / 2) : mbit
;
1107 static void nl80211_fill_signal(const char *ifname
, struct nl80211_rssi_rate
*r
)
1111 struct nl80211_msg_conveyor
*req
;
1116 if ((d
= opendir("/sys/class/net")) != NULL
)
1118 while ((de
= readdir(d
)) != NULL
)
1120 if (!strncmp(de
->d_name
, ifname
, strlen(ifname
)) &&
1121 (!de
->d_name
[strlen(ifname
)] ||
1122 !strncmp(&de
->d_name
[strlen(ifname
)], ".sta", 4)))
1124 req
= nl80211_msg(de
->d_name
, NL80211_CMD_GET_STATION
,
1129 nl80211_send(req
, nl80211_fill_signal_cb
, r
);
1139 static int nl80211_get_bitrate(const char *ifname
, int *buf
)
1141 struct nl80211_rssi_rate rr
;
1143 nl80211_fill_signal(ifname
, &rr
);
1147 *buf
= (rr
.rate
* 100);
1154 static int nl80211_get_signal(const char *ifname
, int *buf
)
1156 struct nl80211_rssi_rate rr
;
1158 nl80211_fill_signal(ifname
, &rr
);
1169 static int nl80211_get_noise_cb(struct nl_msg
*msg
, void *arg
)
1171 int8_t *noise
= arg
;
1172 struct nlattr
**tb
= nl80211_parse(msg
);
1173 struct nlattr
*si
[NL80211_SURVEY_INFO_MAX
+ 1];
1175 static struct nla_policy sp
[NL80211_SURVEY_INFO_MAX
+ 1] = {
1176 [NL80211_SURVEY_INFO_FREQUENCY
] = { .type
= NLA_U32
},
1177 [NL80211_SURVEY_INFO_NOISE
] = { .type
= NLA_U8
},
1180 if (!tb
[NL80211_ATTR_SURVEY_INFO
])
1183 if (nla_parse_nested(si
, NL80211_SURVEY_INFO_MAX
,
1184 tb
[NL80211_ATTR_SURVEY_INFO
], sp
))
1187 if (!si
[NL80211_SURVEY_INFO_NOISE
])
1190 if (!*noise
|| si
[NL80211_SURVEY_INFO_IN_USE
])
1191 *noise
= (int8_t)nla_get_u8(si
[NL80211_SURVEY_INFO_NOISE
]);
1197 static int nl80211_get_noise(const char *ifname
, int *buf
)
1200 struct nl80211_msg_conveyor
*req
;
1202 req
= nl80211_msg(ifname
, NL80211_CMD_GET_SURVEY
, NLM_F_DUMP
);
1207 nl80211_send(req
, nl80211_get_noise_cb
, &noise
);
1220 static int nl80211_get_quality(const char *ifname
, int *buf
)
1224 if (!nl80211_get_signal(ifname
, &signal
))
1226 /* A positive signal level is usually just a quality
1227 * value, pass through as-is */
1233 /* The cfg80211 wext compat layer assumes a signal range
1234 * of -110 dBm to -40 dBm, the quality value is derived
1235 * by adding 110 to the signal level */
1240 else if (signal
> -40)
1243 *buf
= (signal
+ 110);
1252 static int nl80211_get_quality_max(const char *ifname
, int *buf
)
1254 /* The cfg80211 wext compat layer assumes a maximum
1261 static int nl80211_get_encryption(const char *ifname
, char *buf
)
1266 struct iwinfo_crypto_entry
*c
= (struct iwinfo_crypto_entry
*)buf
;
1268 /* WPA supplicant */
1269 if ((res
= nl80211_wpactl_info(ifname
, "STATUS", NULL
)) &&
1270 (val
= nl80211_getval(NULL
, res
, "pairwise_cipher")))
1273 if (strstr(val
, "WEP"))
1275 if (strstr(val
, "WEP-40"))
1276 c
->pair_ciphers
|= IWINFO_CIPHER_WEP40
;
1278 else if (strstr(val
, "WEP-104"))
1279 c
->pair_ciphers
|= IWINFO_CIPHER_WEP104
;
1282 c
->group_ciphers
= c
->pair_ciphers
;
1284 c
->auth_suites
|= IWINFO_KMGMT_NONE
;
1285 c
->auth_algs
|= IWINFO_AUTH_OPEN
; /* XXX: assumption */
1291 if (strstr(val
, "TKIP"))
1292 c
->pair_ciphers
|= IWINFO_CIPHER_TKIP
;
1294 else if (strstr(val
, "CCMP"))
1295 c
->pair_ciphers
|= IWINFO_CIPHER_CCMP
;
1297 else if (strstr(val
, "NONE"))
1298 c
->pair_ciphers
|= IWINFO_CIPHER_NONE
;
1300 else if (strstr(val
, "WEP-40"))
1301 c
->pair_ciphers
|= IWINFO_CIPHER_WEP40
;
1303 else if (strstr(val
, "WEP-104"))
1304 c
->pair_ciphers
|= IWINFO_CIPHER_WEP104
;
1307 if ((val
= nl80211_getval(NULL
, res
, "group_cipher")))
1309 if (strstr(val
, "TKIP"))
1310 c
->group_ciphers
|= IWINFO_CIPHER_TKIP
;
1312 else if (strstr(val
, "CCMP"))
1313 c
->group_ciphers
|= IWINFO_CIPHER_CCMP
;
1315 else if (strstr(val
, "NONE"))
1316 c
->group_ciphers
|= IWINFO_CIPHER_NONE
;
1318 else if (strstr(val
, "WEP-40"))
1319 c
->group_ciphers
|= IWINFO_CIPHER_WEP40
;
1321 else if (strstr(val
, "WEP-104"))
1322 c
->group_ciphers
|= IWINFO_CIPHER_WEP104
;
1326 if ((val
= nl80211_getval(NULL
, res
, "key_mgmt")))
1328 if (strstr(val
, "WPA2"))
1331 else if (strstr(val
, "WPA"))
1335 if (strstr(val
, "PSK"))
1336 c
->auth_suites
|= IWINFO_KMGMT_PSK
;
1338 else if (strstr(val
, "EAP") || strstr(val
, "802.1X"))
1339 c
->auth_suites
|= IWINFO_KMGMT_8021x
;
1341 else if (strstr(val
, "NONE"))
1342 c
->auth_suites
|= IWINFO_KMGMT_NONE
;
1345 c
->enabled
= (c
->wpa_version
&& c
->auth_suites
) ? 1 : 0;
1352 else if ((res
= nl80211_hostapd_info(ifname
)))
1354 if ((val
= nl80211_getval(ifname
, res
, "wpa")) != NULL
)
1355 c
->wpa_version
= atoi(val
);
1357 val
= nl80211_getval(ifname
, res
, "wpa_key_mgmt");
1359 if (!val
|| strstr(val
, "PSK"))
1360 c
->auth_suites
|= IWINFO_KMGMT_PSK
;
1362 if (val
&& strstr(val
, "EAP"))
1363 c
->auth_suites
|= IWINFO_KMGMT_8021x
;
1365 if (val
&& strstr(val
, "NONE"))
1366 c
->auth_suites
|= IWINFO_KMGMT_NONE
;
1368 if ((val
= nl80211_getval(ifname
, res
, "wpa_pairwise")) != NULL
)
1370 if (strstr(val
, "TKIP"))
1371 c
->pair_ciphers
|= IWINFO_CIPHER_TKIP
;
1373 if (strstr(val
, "CCMP"))
1374 c
->pair_ciphers
|= IWINFO_CIPHER_CCMP
;
1376 if (strstr(val
, "NONE"))
1377 c
->pair_ciphers
|= IWINFO_CIPHER_NONE
;
1380 if ((val
= nl80211_getval(ifname
, res
, "auth_algs")) != NULL
)
1384 c
->auth_algs
|= IWINFO_AUTH_OPEN
;
1388 c
->auth_algs
|= IWINFO_AUTH_SHARED
;
1392 c
->auth_algs
|= IWINFO_AUTH_OPEN
;
1393 c
->auth_algs
|= IWINFO_AUTH_SHARED
;
1400 for (i
= 0; i
< 4; i
++)
1402 snprintf(k
, sizeof(k
), "wep_key%d", i
);
1404 if ((val
= nl80211_getval(ifname
, res
, k
)))
1406 if ((strlen(val
) == 5) || (strlen(val
) == 10))
1407 c
->pair_ciphers
|= IWINFO_CIPHER_WEP40
;
1409 else if ((strlen(val
) == 13) || (strlen(val
) == 26))
1410 c
->pair_ciphers
|= IWINFO_CIPHER_WEP104
;
1415 c
->group_ciphers
= c
->pair_ciphers
;
1416 c
->enabled
= (c
->wpa_version
|| c
->pair_ciphers
) ? 1 : 0;
1424 static int nl80211_get_phyname(const char *ifname
, char *buf
)
1428 name
= nl80211_ifname2phy(ifname
);
1435 else if ((name
= nl80211_phy2ifname(ifname
)) != NULL
)
1437 name
= nl80211_ifname2phy(name
);
1441 strcpy(buf
, ifname
);
1450 static int nl80211_get_assoclist_cb(struct nl_msg
*msg
, void *arg
)
1452 struct nl80211_array_buf
*arr
= arg
;
1453 struct iwinfo_assoclist_entry
*e
= arr
->buf
;
1454 struct nlattr
**attr
= nl80211_parse(msg
);
1455 struct nlattr
*sinfo
[NL80211_STA_INFO_MAX
+ 1];
1456 struct nlattr
*rinfo
[NL80211_RATE_INFO_MAX
+ 1];
1458 static struct nla_policy stats_policy
[NL80211_STA_INFO_MAX
+ 1] = {
1459 [NL80211_STA_INFO_INACTIVE_TIME
] = { .type
= NLA_U32
},
1460 [NL80211_STA_INFO_RX_PACKETS
] = { .type
= NLA_U32
},
1461 [NL80211_STA_INFO_TX_PACKETS
] = { .type
= NLA_U32
},
1462 [NL80211_STA_INFO_RX_BITRATE
] = { .type
= NLA_NESTED
},
1463 [NL80211_STA_INFO_TX_BITRATE
] = { .type
= NLA_NESTED
},
1464 [NL80211_STA_INFO_SIGNAL
] = { .type
= NLA_U8
},
1467 static struct nla_policy rate_policy
[NL80211_RATE_INFO_MAX
+ 1] = {
1468 [NL80211_RATE_INFO_BITRATE
] = { .type
= NLA_U16
},
1469 [NL80211_RATE_INFO_MCS
] = { .type
= NLA_U8
},
1470 [NL80211_RATE_INFO_40_MHZ_WIDTH
] = { .type
= NLA_FLAG
},
1471 [NL80211_RATE_INFO_SHORT_GI
] = { .type
= NLA_FLAG
},
1474 /* advance to end of array */
1476 memset(e
, 0, sizeof(*e
));
1478 if (attr
[NL80211_ATTR_MAC
])
1479 memcpy(e
->mac
, nla_data(attr
[NL80211_ATTR_MAC
]), 6);
1481 if (attr
[NL80211_ATTR_STA_INFO
] &&
1482 !nla_parse_nested(sinfo
, NL80211_STA_INFO_MAX
,
1483 attr
[NL80211_ATTR_STA_INFO
], stats_policy
))
1485 if (sinfo
[NL80211_STA_INFO_SIGNAL
])
1486 e
->signal
= nla_get_u8(sinfo
[NL80211_STA_INFO_SIGNAL
]);
1488 if (sinfo
[NL80211_STA_INFO_INACTIVE_TIME
])
1489 e
->inactive
= nla_get_u32(sinfo
[NL80211_STA_INFO_INACTIVE_TIME
]);
1491 if (sinfo
[NL80211_STA_INFO_RX_PACKETS
])
1492 e
->rx_packets
= nla_get_u32(sinfo
[NL80211_STA_INFO_RX_PACKETS
]);
1494 if (sinfo
[NL80211_STA_INFO_TX_PACKETS
])
1495 e
->tx_packets
= nla_get_u32(sinfo
[NL80211_STA_INFO_TX_PACKETS
]);
1497 if (sinfo
[NL80211_STA_INFO_RX_BITRATE
] &&
1498 !nla_parse_nested(rinfo
, NL80211_RATE_INFO_MAX
,
1499 sinfo
[NL80211_STA_INFO_RX_BITRATE
], rate_policy
))
1501 if (rinfo
[NL80211_RATE_INFO_BITRATE
])
1503 nla_get_u16(rinfo
[NL80211_RATE_INFO_BITRATE
]) * 100;
1505 if (rinfo
[NL80211_RATE_INFO_MCS
])
1506 e
->rx_rate
.mcs
= nla_get_u8(rinfo
[NL80211_RATE_INFO_MCS
]);
1508 if (rinfo
[NL80211_RATE_INFO_40_MHZ_WIDTH
])
1509 e
->rx_rate
.is_40mhz
= 1;
1511 if (rinfo
[NL80211_RATE_INFO_SHORT_GI
])
1512 e
->rx_rate
.is_short_gi
= 1;
1515 if (sinfo
[NL80211_STA_INFO_TX_BITRATE
] &&
1516 !nla_parse_nested(rinfo
, NL80211_RATE_INFO_MAX
,
1517 sinfo
[NL80211_STA_INFO_TX_BITRATE
], rate_policy
))
1519 if (rinfo
[NL80211_RATE_INFO_BITRATE
])
1521 nla_get_u16(rinfo
[NL80211_RATE_INFO_BITRATE
]) * 100;
1523 if (rinfo
[NL80211_RATE_INFO_MCS
])
1524 e
->tx_rate
.mcs
= nla_get_u8(rinfo
[NL80211_RATE_INFO_MCS
]);
1526 if (rinfo
[NL80211_RATE_INFO_40_MHZ_WIDTH
])
1527 e
->tx_rate
.is_40mhz
= 1;
1529 if (rinfo
[NL80211_RATE_INFO_SHORT_GI
])
1530 e
->tx_rate
.is_short_gi
= 1;
1534 e
->noise
= 0; /* filled in by caller */
1540 static int nl80211_get_assoclist(const char *ifname
, char *buf
, int *len
)
1545 struct nl80211_msg_conveyor
*req
;
1546 struct nl80211_array_buf arr
= { .buf
= buf
, .count
= 0 };
1547 struct iwinfo_assoclist_entry
*e
;
1549 if ((d
= opendir("/sys/class/net")) != NULL
)
1551 while ((de
= readdir(d
)) != NULL
)
1553 if (!strncmp(de
->d_name
, ifname
, strlen(ifname
)) &&
1554 (!de
->d_name
[strlen(ifname
)] ||
1555 !strncmp(&de
->d_name
[strlen(ifname
)], ".sta", 4)))
1557 req
= nl80211_msg(de
->d_name
, NL80211_CMD_GET_STATION
,
1562 nl80211_send(req
, nl80211_get_assoclist_cb
, &arr
);
1570 if (!nl80211_get_noise(ifname
, &noise
))
1571 for (i
= 0, e
= arr
.buf
; i
< arr
.count
; i
++, e
++)
1574 *len
= (arr
.count
* sizeof(struct iwinfo_assoclist_entry
));
1581 static int nl80211_get_txpwrlist_cb(struct nl_msg
*msg
, void *arg
)
1584 int ch_cur
, ch_cmp
, bands_remain
, freqs_remain
;
1586 struct nlattr
**attr
= nl80211_parse(msg
);
1587 struct nlattr
*bands
[NL80211_BAND_ATTR_MAX
+ 1];
1588 struct nlattr
*freqs
[NL80211_FREQUENCY_ATTR_MAX
+ 1];
1589 struct nlattr
*band
, *freq
;
1591 static struct nla_policy freq_policy
[NL80211_FREQUENCY_ATTR_MAX
+ 1] = {
1592 [NL80211_FREQUENCY_ATTR_FREQ
] = { .type
= NLA_U32
},
1593 [NL80211_FREQUENCY_ATTR_DISABLED
] = { .type
= NLA_FLAG
},
1594 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN
] = { .type
= NLA_FLAG
},
1595 [NL80211_FREQUENCY_ATTR_NO_IBSS
] = { .type
= NLA_FLAG
},
1596 [NL80211_FREQUENCY_ATTR_RADAR
] = { .type
= NLA_FLAG
},
1597 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER
] = { .type
= NLA_U32
},
1600 ch_cur
= *dbm_max
; /* value int* is initialized with channel by caller */
1603 nla_for_each_nested(band
, attr
[NL80211_ATTR_WIPHY_BANDS
], bands_remain
)
1605 nla_parse(bands
, NL80211_BAND_ATTR_MAX
, nla_data(band
),
1606 nla_len(band
), NULL
);
1608 nla_for_each_nested(freq
, bands
[NL80211_BAND_ATTR_FREQS
], freqs_remain
)
1610 nla_parse(freqs
, NL80211_FREQUENCY_ATTR_MAX
,
1611 nla_data(freq
), nla_len(freq
), freq_policy
);
1613 ch_cmp
= nl80211_freq2channel(nla_get_u32(
1614 freqs
[NL80211_FREQUENCY_ATTR_FREQ
]));
1616 if ((!ch_cur
|| (ch_cmp
== ch_cur
)) &&
1617 freqs
[NL80211_FREQUENCY_ATTR_MAX_TX_POWER
])
1619 *dbm_max
= (int)(0.01 * nla_get_u32(
1620 freqs
[NL80211_FREQUENCY_ATTR_MAX_TX_POWER
]));
1630 static int nl80211_get_txpwrlist(const char *ifname
, char *buf
, int *len
)
1633 int dbm_max
= -1, dbm_cur
, dbm_cnt
;
1634 struct nl80211_msg_conveyor
*req
;
1635 struct iwinfo_txpwrlist_entry entry
;
1637 if (nl80211_get_channel(ifname
, &ch_cur
))
1640 req
= nl80211_msg(ifname
, NL80211_CMD_GET_WIPHY
, 0);
1643 /* initialize the value pointer with channel for callback */
1646 nl80211_send(req
, nl80211_get_txpwrlist_cb
, &dbm_max
);
1652 for (dbm_cur
= 0, dbm_cnt
= 0;
1654 dbm_cur
++, dbm_cnt
++)
1656 entry
.dbm
= dbm_cur
;
1657 entry
.mw
= iwinfo_dbm2mw(dbm_cur
);
1659 memcpy(&buf
[dbm_cnt
* sizeof(entry
)], &entry
, sizeof(entry
));
1662 entry
.dbm
= dbm_max
;
1663 entry
.mw
= iwinfo_dbm2mw(dbm_max
);
1665 memcpy(&buf
[dbm_cnt
* sizeof(entry
)], &entry
, sizeof(entry
));
1668 *len
= dbm_cnt
* sizeof(entry
);
1675 static void nl80211_get_scancrypto(const char *spec
,
1676 struct iwinfo_crypto_entry
*c
)
1678 if (strstr(spec
, "WPA") || strstr(spec
, "WEP"))
1682 if (strstr(spec
, "WPA2-") && strstr(spec
, "WPA-"))
1685 else if (strstr(spec
, "WPA2"))
1688 else if (strstr(spec
, "WPA"))
1691 else if (strstr(spec
, "WEP"))
1692 c
->auth_algs
= IWINFO_AUTH_OPEN
| IWINFO_AUTH_SHARED
;
1695 if (strstr(spec
, "PSK"))
1696 c
->auth_suites
|= IWINFO_KMGMT_PSK
;
1698 if (strstr(spec
, "802.1X") || strstr(spec
, "EAP"))
1699 c
->auth_suites
|= IWINFO_KMGMT_8021x
;
1701 if (strstr(spec
, "WPA-NONE"))
1702 c
->auth_suites
|= IWINFO_KMGMT_NONE
;
1705 if (strstr(spec
, "TKIP"))
1706 c
->pair_ciphers
|= IWINFO_CIPHER_TKIP
;
1708 if (strstr(spec
, "CCMP"))
1709 c
->pair_ciphers
|= IWINFO_CIPHER_CCMP
;
1711 if (strstr(spec
, "WEP-40"))
1712 c
->pair_ciphers
|= IWINFO_CIPHER_WEP40
;
1714 if (strstr(spec
, "WEP-104"))
1715 c
->pair_ciphers
|= IWINFO_CIPHER_WEP104
;
1717 c
->group_ciphers
= c
->pair_ciphers
;
1726 struct nl80211_scanlist
{
1727 struct iwinfo_scanlist_entry
*e
;
1732 static void nl80211_get_scanlist_ie(struct nlattr
**bss
,
1733 struct iwinfo_scanlist_entry
*e
)
1735 int ielen
= nla_len(bss
[NL80211_BSS_INFORMATION_ELEMENTS
]);
1736 unsigned char *ie
= nla_data(bss
[NL80211_BSS_INFORMATION_ELEMENTS
]);
1737 static unsigned char ms_oui
[3] = { 0x00, 0x50, 0xf2 };
1740 while (ielen
>= 2 && ielen
>= ie
[1])
1745 len
= min(ie
[1], IWINFO_ESSID_MAX_SIZE
);
1746 memcpy(e
->ssid
, ie
+ 2, len
);
1751 iwinfo_parse_rsn(&e
->crypto
, ie
+ 2, ie
[1],
1752 IWINFO_CIPHER_CCMP
, IWINFO_KMGMT_8021x
);
1755 case 221: /* Vendor */
1756 if (ie
[1] >= 4 && !memcmp(ie
+ 2, ms_oui
, 3) && ie
[5] == 1)
1757 iwinfo_parse_rsn(&e
->crypto
, ie
+ 6, ie
[1] - 4,
1758 IWINFO_CIPHER_TKIP
, IWINFO_KMGMT_PSK
);
1767 static int nl80211_get_scanlist_cb(struct nl_msg
*msg
, void *arg
)
1772 struct nl80211_scanlist
*sl
= arg
;
1773 struct nlattr
**tb
= nl80211_parse(msg
);
1774 struct nlattr
*bss
[NL80211_BSS_MAX
+ 1];
1776 static struct nla_policy bss_policy
[NL80211_BSS_MAX
+ 1] = {
1777 [NL80211_BSS_TSF
] = { .type
= NLA_U64
},
1778 [NL80211_BSS_FREQUENCY
] = { .type
= NLA_U32
},
1779 [NL80211_BSS_BSSID
] = { },
1780 [NL80211_BSS_BEACON_INTERVAL
] = { .type
= NLA_U16
},
1781 [NL80211_BSS_CAPABILITY
] = { .type
= NLA_U16
},
1782 [NL80211_BSS_INFORMATION_ELEMENTS
] = { },
1783 [NL80211_BSS_SIGNAL_MBM
] = { .type
= NLA_U32
},
1784 [NL80211_BSS_SIGNAL_UNSPEC
] = { .type
= NLA_U8
},
1785 [NL80211_BSS_STATUS
] = { .type
= NLA_U32
},
1786 [NL80211_BSS_SEEN_MS_AGO
] = { .type
= NLA_U32
},
1787 [NL80211_BSS_BEACON_IES
] = { },
1790 if (!tb
[NL80211_ATTR_BSS
] ||
1791 nla_parse_nested(bss
, NL80211_BSS_MAX
, tb
[NL80211_ATTR_BSS
],
1793 !bss
[NL80211_BSS_BSSID
])
1798 if (bss
[NL80211_BSS_CAPABILITY
])
1799 caps
= nla_get_u16(bss
[NL80211_BSS_CAPABILITY
]);
1803 memset(sl
->e
, 0, sizeof(*sl
->e
));
1804 memcpy(sl
->e
->mac
, nla_data(bss
[NL80211_BSS_BSSID
]), 6);
1807 sl
->e
->mode
= IWINFO_OPMODE_ADHOC
;
1808 else if (caps
& (1<<0))
1809 sl
->e
->mode
= IWINFO_OPMODE_MASTER
;
1811 sl
->e
->mode
= IWINFO_OPMODE_MESHPOINT
;
1814 sl
->e
->crypto
.enabled
= 1;
1816 if (bss
[NL80211_BSS_FREQUENCY
])
1817 sl
->e
->channel
= nl80211_freq2channel(nla_get_u32(
1818 bss
[NL80211_BSS_FREQUENCY
]));
1820 if (bss
[NL80211_BSS_INFORMATION_ELEMENTS
])
1821 nl80211_get_scanlist_ie(bss
, sl
->e
);
1823 if (bss
[NL80211_BSS_SIGNAL_MBM
])
1826 (uint8_t)((int32_t)nla_get_u32(bss
[NL80211_BSS_SIGNAL_MBM
]) / 100);
1828 rssi
= sl
->e
->signal
- 0x100;
1832 else if (rssi
> -40)
1835 sl
->e
->quality
= (rssi
+ 110);
1836 sl
->e
->quality_max
= 70;
1839 if (sl
->e
->crypto
.enabled
&& !sl
->e
->crypto
.wpa_version
)
1841 sl
->e
->crypto
.auth_algs
= IWINFO_AUTH_OPEN
| IWINFO_AUTH_SHARED
;
1842 sl
->e
->crypto
.pair_ciphers
= IWINFO_CIPHER_WEP40
| IWINFO_CIPHER_WEP104
;
1851 static int nl80211_get_scanlist_nl(const char *ifname
, char *buf
, int *len
)
1853 struct nl80211_msg_conveyor
*req
;
1854 struct nl80211_scanlist sl
= { .e
= (struct iwinfo_scanlist_entry
*)buf
};
1856 req
= nl80211_msg(ifname
, NL80211_CMD_TRIGGER_SCAN
, 0);
1859 nl80211_send(req
, NULL
, NULL
);
1863 nl80211_wait("nl80211", "scan", NL80211_CMD_NEW_SCAN_RESULTS
);
1865 req
= nl80211_msg(ifname
, NL80211_CMD_GET_SCAN
, NLM_F_DUMP
);
1868 nl80211_send(req
, nl80211_get_scanlist_cb
, &sl
);
1872 *len
= sl
.len
* sizeof(struct iwinfo_scanlist_entry
);
1873 return *len
? 0 : -1;
1876 static int nl80211_get_scanlist(const char *ifname
, char *buf
, int *len
)
1878 int freq
, rssi
, qmax
, count
, mode
;
1880 char ssid
[128] = { 0 };
1881 char bssid
[18] = { 0 };
1882 char cipher
[256] = { 0 };
1884 /* Got a radioX pseudo interface, find some interface on it or create one */
1885 if (!strncmp(ifname
, "radio", 5))
1887 /* Reuse existing interface */
1888 if ((res
= nl80211_phy2ifname(ifname
)) != NULL
)
1890 return nl80211_get_scanlist(res
, buf
, len
);
1893 /* Need to spawn a temporary iface for scanning */
1894 else if ((res
= nl80211_ifadd(ifname
)) != NULL
)
1896 count
= nl80211_get_scanlist(res
, buf
, len
);
1902 struct iwinfo_scanlist_entry
*e
= (struct iwinfo_scanlist_entry
*)buf
;
1904 /* WPA supplicant */
1905 if ((res
= nl80211_wpactl_info(ifname
, "SCAN", "CTRL-EVENT-SCAN-RESULTS")))
1907 if ((res
= nl80211_wpactl_info(ifname
, "SCAN_RESULTS", NULL
)))
1909 nl80211_get_quality_max(ifname
, &qmax
);
1916 /* skip log lines */
1921 /* skip header line */
1925 if (sscanf(res
, "%17s %d %d %255s%*[ \t]%127[^\n]\n",
1926 bssid
, &freq
, &rssi
, cipher
, ssid
) < 5)
1928 /* skip malformed lines */
1932 e
->mac
[0] = strtol(&bssid
[0], NULL
, 16);
1933 e
->mac
[1] = strtol(&bssid
[3], NULL
, 16);
1934 e
->mac
[2] = strtol(&bssid
[6], NULL
, 16);
1935 e
->mac
[3] = strtol(&bssid
[9], NULL
, 16);
1936 e
->mac
[4] = strtol(&bssid
[12], NULL
, 16);
1937 e
->mac
[5] = strtol(&bssid
[15], NULL
, 16);
1940 memcpy(e
->ssid
, ssid
, min(strlen(ssid
), sizeof(e
->ssid
) - 1));
1942 /* Mode (assume master) */
1943 if (strstr(cipher
,"[MESH]"))
1944 e
->mode
= IWINFO_OPMODE_MESHPOINT
;
1946 e
->mode
= IWINFO_OPMODE_MASTER
;
1949 e
->channel
= nl80211_freq2channel(freq
);
1957 /* The cfg80211 wext compat layer assumes a signal range
1958 * of -110 dBm to -40 dBm, the quality value is derived
1959 * by adding 110 to the signal level */
1962 else if (rssi
> -40)
1965 e
->quality
= (rssi
+ 110);
1973 e
->quality_max
= qmax
;
1976 nl80211_get_scancrypto(cipher
, &e
->crypto
);
1981 memset(ssid
, 0, sizeof(ssid
));
1982 memset(bssid
, 0, sizeof(bssid
));
1983 memset(cipher
, 0, sizeof(cipher
));
1986 /* advance to next line */
1987 while( *res
&& *res
++ != '\n' );
1991 *len
= count
* sizeof(struct iwinfo_scanlist_entry
);
1996 /* station / ad-hoc / monitor scan */
1997 else if (!nl80211_get_mode(ifname
, &mode
) &&
1998 (mode
== IWINFO_OPMODE_ADHOC
||
1999 mode
== IWINFO_OPMODE_CLIENT
||
2000 mode
== IWINFO_OPMODE_MONITOR
) &&
2001 iwinfo_ifup(ifname
))
2003 return nl80211_get_scanlist_nl(ifname
, buf
, len
);
2009 /* Got a temp interface, don't create yet another one */
2010 if (!strncmp(ifname
, "tmp.", 4))
2012 if (!iwinfo_ifup(ifname
))
2015 nl80211_get_scanlist_nl(ifname
, buf
, len
);
2016 iwinfo_ifdown(ifname
);
2020 /* Spawn a new scan interface */
2023 if (!(res
= nl80211_ifadd(ifname
)))
2028 /* if we can take the new interface up, the driver supports an
2029 * additional interface and there's no need to tear down the ap */
2030 if (iwinfo_ifup(res
))
2032 nl80211_get_scanlist_nl(res
, buf
, len
);
2036 /* driver cannot create secondary interface, take down ap
2038 else if (iwinfo_ifdown(ifname
) && iwinfo_ifup(res
))
2040 nl80211_get_scanlist_nl(res
, buf
, len
);
2042 iwinfo_ifup(ifname
);
2043 nl80211_hostapd_hup(ifname
);
2055 static int nl80211_get_freqlist_cb(struct nl_msg
*msg
, void *arg
)
2057 int bands_remain
, freqs_remain
;
2059 struct nl80211_array_buf
*arr
= arg
;
2060 struct iwinfo_freqlist_entry
*e
= arr
->buf
;
2062 struct nlattr
**attr
= nl80211_parse(msg
);
2063 struct nlattr
*bands
[NL80211_BAND_ATTR_MAX
+ 1];
2064 struct nlattr
*freqs
[NL80211_FREQUENCY_ATTR_MAX
+ 1];
2065 struct nlattr
*band
, *freq
;
2067 static struct nla_policy freq_policy
[NL80211_FREQUENCY_ATTR_MAX
+ 1] = {
2068 [NL80211_FREQUENCY_ATTR_FREQ
] = { .type
= NLA_U32
},
2069 [NL80211_FREQUENCY_ATTR_DISABLED
] = { .type
= NLA_FLAG
},
2070 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN
] = { .type
= NLA_FLAG
},
2071 [NL80211_FREQUENCY_ATTR_NO_IBSS
] = { .type
= NLA_FLAG
},
2072 [NL80211_FREQUENCY_ATTR_RADAR
] = { .type
= NLA_FLAG
},
2073 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER
] = { .type
= NLA_U32
},
2076 nla_for_each_nested(band
, attr
[NL80211_ATTR_WIPHY_BANDS
], bands_remain
)
2078 nla_parse(bands
, NL80211_BAND_ATTR_MAX
,
2079 nla_data(band
), nla_len(band
), NULL
);
2081 nla_for_each_nested(freq
, bands
[NL80211_BAND_ATTR_FREQS
], freqs_remain
)
2083 nla_parse(freqs
, NL80211_FREQUENCY_ATTR_MAX
,
2084 nla_data(freq
), nla_len(freq
), NULL
);
2086 if (!freqs
[NL80211_FREQUENCY_ATTR_FREQ
] ||
2087 freqs
[NL80211_FREQUENCY_ATTR_DISABLED
])
2090 e
->mhz
= nla_get_u32(freqs
[NL80211_FREQUENCY_ATTR_FREQ
]);
2091 e
->channel
= nl80211_freq2channel(e
->mhz
);
2094 freqs
[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN
] ||
2095 freqs
[NL80211_FREQUENCY_ATTR_NO_IBSS
] ||
2096 freqs
[NL80211_FREQUENCY_ATTR_RADAR
]
2107 static int nl80211_get_freqlist(const char *ifname
, char *buf
, int *len
)
2109 struct nl80211_msg_conveyor
*req
;
2110 struct nl80211_array_buf arr
= { .buf
= buf
, .count
= 0 };
2112 req
= nl80211_msg(ifname
, NL80211_CMD_GET_WIPHY
, 0);
2115 nl80211_send(req
, nl80211_get_freqlist_cb
, &arr
);
2121 *len
= arr
.count
* sizeof(struct iwinfo_freqlist_entry
);
2128 static int nl80211_get_country_cb(struct nl_msg
*msg
, void *arg
)
2131 struct nlattr
**attr
= nl80211_parse(msg
);
2133 if (attr
[NL80211_ATTR_REG_ALPHA2
])
2134 memcpy(buf
, nla_data(attr
[NL80211_ATTR_REG_ALPHA2
]), 2);
2141 static int nl80211_get_country(const char *ifname
, char *buf
)
2144 struct nl80211_msg_conveyor
*req
;
2146 req
= nl80211_msg(ifname
, NL80211_CMD_GET_REG
, 0);
2149 nl80211_send(req
, nl80211_get_country_cb
, buf
);
2159 static int nl80211_get_countrylist(const char *ifname
, char *buf
, int *len
)
2162 struct iwinfo_country_entry
*e
= (struct iwinfo_country_entry
*)buf
;
2163 const struct iwinfo_iso3166_label
*l
;
2165 for (l
= IWINFO_ISO3166_NAMES
, count
= 0; l
->iso3166
; l
++, e
++, count
++)
2167 e
->iso3166
= l
->iso3166
;
2168 e
->ccode
[0] = (l
->iso3166
/ 256);
2169 e
->ccode
[1] = (l
->iso3166
% 256);
2172 *len
= (count
* sizeof(struct iwinfo_country_entry
));
2176 static int nl80211_get_hwmodelist_cb(struct nl_msg
*msg
, void *arg
)
2179 int bands_remain
, freqs_remain
;
2181 uint32_t vht_caps
= 0;
2182 struct nlattr
**attr
= nl80211_parse(msg
);
2183 struct nlattr
*bands
[NL80211_BAND_ATTR_MAX
+ 1];
2184 struct nlattr
*freqs
[NL80211_FREQUENCY_ATTR_MAX
+ 1];
2185 struct nlattr
*band
, *freq
;
2189 if (attr
[NL80211_ATTR_WIPHY_BANDS
])
2191 nla_for_each_nested(band
, attr
[NL80211_ATTR_WIPHY_BANDS
], bands_remain
)
2193 nla_parse(bands
, NL80211_BAND_ATTR_MAX
,
2194 nla_data(band
), nla_len(band
), NULL
);
2196 if (bands
[NL80211_BAND_ATTR_HT_CAPA
])
2197 caps
= nla_get_u16(bands
[NL80211_BAND_ATTR_HT_CAPA
]);
2199 /* Treat any nonzero capability as 11n */
2201 *modes
|= IWINFO_80211_N
;
2203 if (bands
[NL80211_BAND_ATTR_VHT_CAPA
])
2204 vht_caps
= nla_get_u32(bands
[NL80211_BAND_ATTR_VHT_CAPA
]);
2206 /* Treat any nonzero capability as 11ac */
2208 *modes
|= IWINFO_80211_AC
;
2210 nla_for_each_nested(freq
, bands
[NL80211_BAND_ATTR_FREQS
],
2213 nla_parse(freqs
, NL80211_FREQUENCY_ATTR_MAX
,
2214 nla_data(freq
), nla_len(freq
), NULL
);
2216 if (!freqs
[NL80211_FREQUENCY_ATTR_FREQ
])
2219 if (nla_get_u32(freqs
[NL80211_FREQUENCY_ATTR_FREQ
]) < 2485)
2221 *modes
|= IWINFO_80211_B
;
2222 *modes
|= IWINFO_80211_G
;
2224 else if (!(*modes
& IWINFO_80211_AC
))
2226 *modes
|= IWINFO_80211_A
;
2235 static int nl80211_get_hwmodelist(const char *ifname
, int *buf
)
2237 struct nl80211_msg_conveyor
*req
;
2239 req
= nl80211_msg(ifname
, NL80211_CMD_GET_WIPHY
, 0);
2242 nl80211_send(req
, nl80211_get_hwmodelist_cb
, buf
);
2246 return *buf
? 0 : -1;
2249 static int nl80211_get_ifcomb_cb(struct nl_msg
*msg
, void *arg
)
2251 struct nlattr
**attr
= nl80211_parse(msg
);
2252 struct nlattr
*comb
;
2254 int comb_rem
, limit_rem
, mode_rem
;
2257 if (!attr
[NL80211_ATTR_INTERFACE_COMBINATIONS
])
2260 nla_for_each_nested(comb
, attr
[NL80211_ATTR_INTERFACE_COMBINATIONS
], comb_rem
)
2262 static struct nla_policy iface_combination_policy
[NUM_NL80211_IFACE_COMB
] = {
2263 [NL80211_IFACE_COMB_LIMITS
] = { .type
= NLA_NESTED
},
2264 [NL80211_IFACE_COMB_MAXNUM
] = { .type
= NLA_U32
},
2266 struct nlattr
*tb_comb
[NUM_NL80211_IFACE_COMB
];
2267 static struct nla_policy iface_limit_policy
[NUM_NL80211_IFACE_LIMIT
] = {
2268 [NL80211_IFACE_LIMIT_TYPES
] = { .type
= NLA_NESTED
},
2269 [NL80211_IFACE_LIMIT_MAX
] = { .type
= NLA_U32
},
2271 struct nlattr
*tb_limit
[NUM_NL80211_IFACE_LIMIT
];
2272 struct nlattr
*limit
;
2274 nla_parse_nested(tb_comb
, NL80211_BAND_ATTR_MAX
, comb
, iface_combination_policy
);
2276 if (!tb_comb
[NL80211_IFACE_COMB_LIMITS
])
2279 nla_for_each_nested(limit
, tb_comb
[NL80211_IFACE_COMB_LIMITS
], limit_rem
)
2281 struct nlattr
*mode
;
2283 nla_parse_nested(tb_limit
, NUM_NL80211_IFACE_LIMIT
, limit
, iface_limit_policy
);
2285 if (!tb_limit
[NL80211_IFACE_LIMIT_TYPES
] ||
2286 !tb_limit
[NL80211_IFACE_LIMIT_MAX
])
2289 if (nla_get_u32(tb_limit
[NL80211_IFACE_LIMIT_MAX
]) < 2)
2292 nla_for_each_nested(mode
, tb_limit
[NL80211_IFACE_LIMIT_TYPES
], mode_rem
) {
2293 if (nla_type(mode
) == NL80211_IFTYPE_AP
)
2302 static int nl80211_get_mbssid_support(const char *ifname
, int *buf
)
2304 struct nl80211_msg_conveyor
*req
;
2306 req
= nl80211_msg(ifname
, NL80211_CMD_GET_WIPHY
, 0);
2310 nl80211_send(req
, nl80211_get_ifcomb_cb
, buf
);
2315 static int nl80211_get_hardware_id(const char *ifname
, char *buf
)
2320 /* Got a radioX pseudo interface, find some interface on it or create one */
2321 if (!strncmp(ifname
, "radio", 5))
2323 /* Reuse existing interface */
2324 if ((res
= nl80211_phy2ifname(ifname
)) != NULL
)
2326 rv
= wext_ops
.hardware_id(res
, buf
);
2329 /* Need to spawn a temporary iface for finding IDs */
2330 else if ((res
= nl80211_ifadd(ifname
)) != NULL
)
2332 rv
= wext_ops
.hardware_id(res
, buf
);
2338 rv
= wext_ops
.hardware_id(ifname
, buf
);
2341 /* Failed to obtain hardware IDs, search board config */
2344 rv
= iwinfo_hardware_id_from_mtd((struct iwinfo_hardware_id
*)buf
);
2350 static const struct iwinfo_hardware_entry
*
2351 nl80211_get_hardware_entry(const char *ifname
)
2353 struct iwinfo_hardware_id id
;
2355 if (nl80211_get_hardware_id(ifname
, (char *)&id
))
2358 return iwinfo_hardware(&id
);
2361 static int nl80211_get_hardware_name(const char *ifname
, char *buf
)
2363 const struct iwinfo_hardware_entry
*hw
;
2365 if (!(hw
= nl80211_get_hardware_entry(ifname
)))
2366 sprintf(buf
, "Generic MAC80211");
2368 sprintf(buf
, "%s %s", hw
->vendor_name
, hw
->device_name
);
2373 static int nl80211_get_txpower_offset(const char *ifname
, int *buf
)
2375 const struct iwinfo_hardware_entry
*hw
;
2377 if (!(hw
= nl80211_get_hardware_entry(ifname
)))
2380 *buf
= hw
->txpower_offset
;
2384 static int nl80211_get_frequency_offset(const char *ifname
, int *buf
)
2386 const struct iwinfo_hardware_entry
*hw
;
2388 if (!(hw
= nl80211_get_hardware_entry(ifname
)))
2391 *buf
= hw
->frequency_offset
;
2395 const struct iwinfo_ops nl80211_ops
= {
2397 .probe
= nl80211_probe
,
2398 .channel
= nl80211_get_channel
,
2399 .frequency
= nl80211_get_frequency
,
2400 .frequency_offset
= nl80211_get_frequency_offset
,
2401 .txpower
= nl80211_get_txpower
,
2402 .txpower_offset
= nl80211_get_txpower_offset
,
2403 .bitrate
= nl80211_get_bitrate
,
2404 .signal
= nl80211_get_signal
,
2405 .noise
= nl80211_get_noise
,
2406 .quality
= nl80211_get_quality
,
2407 .quality_max
= nl80211_get_quality_max
,
2408 .mbssid_support
= nl80211_get_mbssid_support
,
2409 .hwmodelist
= nl80211_get_hwmodelist
,
2410 .mode
= nl80211_get_mode
,
2411 .ssid
= nl80211_get_ssid
,
2412 .bssid
= nl80211_get_bssid
,
2413 .country
= nl80211_get_country
,
2414 .hardware_id
= nl80211_get_hardware_id
,
2415 .hardware_name
= nl80211_get_hardware_name
,
2416 .encryption
= nl80211_get_encryption
,
2417 .phyname
= nl80211_get_phyname
,
2418 .assoclist
= nl80211_get_assoclist
,
2419 .txpwrlist
= nl80211_get_txpwrlist
,
2420 .scanlist
= nl80211_get_scanlist
,
2421 .freqlist
= nl80211_get_freqlist
,
2422 .countrylist
= nl80211_get_countrylist
,
2423 .close
= nl80211_close