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.
30 #include "iwinfo_nl80211.h"
32 #define min(x, y) ((x) < (y)) ? (x) : (y)
34 #define BIT(x) (1ULL<<(x))
36 static struct nl80211_state
*nls
= NULL
;
38 static void nl80211_close(void)
43 genl_family_put(nls
->nlctrl
);
46 genl_family_put(nls
->nl80211
);
49 nl_socket_free(nls
->nl_sock
);
52 nl_cache_free(nls
->nl_cache
);
59 static int nl80211_init(void)
65 nls
= malloc(sizeof(struct nl80211_state
));
71 memset(nls
, 0, sizeof(*nls
));
73 nls
->nl_sock
= nl_socket_alloc();
79 if (genl_connect(nls
->nl_sock
)) {
84 fd
= nl_socket_get_fd(nls
->nl_sock
);
85 if (fcntl(fd
, F_SETFD
, fcntl(fd
, F_GETFD
) | FD_CLOEXEC
) < 0) {
90 if (genl_ctrl_alloc_cache(nls
->nl_sock
, &nls
->nl_cache
)) {
95 nls
->nl80211
= genl_ctrl_search_by_name(nls
->nl_cache
, "nl80211");
101 nls
->nlctrl
= genl_ctrl_search_by_name(nls
->nl_cache
, "nlctrl");
116 static int nl80211_readint(const char *path
)
122 if ((fd
= open(path
, O_RDONLY
)) > -1)
124 if (read(fd
, buffer
, sizeof(buffer
)) > 0)
133 static int nl80211_readstr(const char *path
, char *buffer
, int length
)
138 if ((fd
= open(path
, O_RDONLY
)) > -1)
140 if ((rv
= read(fd
, buffer
, length
- 1)) > 0)
142 if (buffer
[rv
- 1] == '\n')
155 static int nl80211_msg_error(struct sockaddr_nl
*nla
,
156 struct nlmsgerr
*err
, void *arg
)
163 static int nl80211_msg_finish(struct nl_msg
*msg
, void *arg
)
170 static int nl80211_msg_ack(struct nl_msg
*msg
, void *arg
)
177 static int nl80211_msg_response(struct nl_msg
*msg
, void *arg
)
182 static void nl80211_free(struct nl80211_msg_conveyor
*cv
)
197 static struct nl80211_msg_conveyor
* nl80211_new(struct genl_family
*family
,
200 static struct nl80211_msg_conveyor cv
;
202 struct nl_msg
*req
= NULL
;
203 struct nl_cb
*cb
= NULL
;
209 cb
= nl_cb_alloc(NL_CB_DEFAULT
);
213 genlmsg_put(req
, 0, 0, genl_family_get_id(family
), 0, flags
, cmd
, 0);
227 static struct nl80211_msg_conveyor
* nl80211_ctl(int cmd
, int flags
)
229 if (nl80211_init() < 0)
232 return nl80211_new(nls
->nlctrl
, cmd
, flags
);
235 static int nl80211_phy_idx_from_uci_path(struct uci_section
*s
)
242 opt
= uci_lookup_option_string(uci_ctx
, s
, "path");
246 snprintf(buf
, sizeof(buf
), "/sys/devices/%s/ieee80211/*/index", opt
); /**/
247 if (glob(buf
, 0, NULL
, &gl
))
248 snprintf(buf
, sizeof(buf
), "/sys/devices/platform/%s/ieee80211/*/index", opt
); /**/
250 if (glob(buf
, 0, NULL
, &gl
))
254 idx
= nl80211_readint(gl
.gl_pathv
[0]);
261 static int nl80211_phy_idx_from_uci_macaddr(struct uci_section
*s
)
268 opt
= uci_lookup_option_string(uci_ctx
, s
, "macaddr");
272 snprintf(buf
, sizeof(buf
), "/sys/class/ieee80211/*"); /**/
273 if (glob(buf
, 0, NULL
, &gl
))
276 for (i
= 0; i
< gl
.gl_pathc
; i
++)
278 snprintf(buf
, sizeof(buf
), "%s/macaddress", gl
.gl_pathv
[i
]);
279 if (nl80211_readstr(buf
, buf
, sizeof(buf
)) <= 0)
282 if (fnmatch(opt
, buf
, FNM_CASEFOLD
))
285 snprintf(buf
, sizeof(buf
), "%s/index", gl
.gl_pathv
[i
]);
286 if ((idx
= nl80211_readint(buf
)) > -1)
295 static int nl80211_phy_idx_from_uci_phy(struct uci_section
*s
)
300 opt
= uci_lookup_option_string(uci_ctx
, s
, "phy");
304 snprintf(buf
, sizeof(buf
), "/sys/class/ieee80211/%s/index", opt
);
305 return nl80211_readint(buf
);
308 static int nl80211_phy_idx_from_uci(const char *name
)
310 struct uci_section
*s
;
313 s
= iwinfo_uci_get_radio(name
, "mac80211");
317 idx
= nl80211_phy_idx_from_uci_path(s
);
320 idx
= nl80211_phy_idx_from_uci_macaddr(s
);
323 idx
= nl80211_phy_idx_from_uci_phy(s
);
330 static struct nl80211_msg_conveyor
* nl80211_msg(const char *ifname
,
333 int ifidx
= -1, phyidx
= -1;
334 struct nl80211_msg_conveyor
*cv
;
339 if (nl80211_init() < 0)
342 if (!strncmp(ifname
, "phy", 3))
343 phyidx
= atoi(&ifname
[3]);
344 else if (!strncmp(ifname
, "radio", 5))
345 phyidx
= nl80211_phy_idx_from_uci(ifname
);
346 else if (!strncmp(ifname
, "mon.", 4))
347 ifidx
= if_nametoindex(&ifname
[4]);
349 ifidx
= if_nametoindex(ifname
);
351 /* Valid ifidx must be greater than 0 */
352 if ((ifidx
<= 0) && (phyidx
< 0))
355 cv
= nl80211_new(nls
->nl80211
, cmd
, flags
);
360 NLA_PUT_U32(cv
->msg
, NL80211_ATTR_IFINDEX
, ifidx
);
363 NLA_PUT_U32(cv
->msg
, NL80211_ATTR_WIPHY
, phyidx
);
372 static int nl80211_send(struct nl80211_msg_conveyor
*cv
,
373 int (*cb_func
)(struct nl_msg
*, void *),
376 static struct nl80211_msg_conveyor rcv
;
380 nl_cb_set(cv
->cb
, NL_CB_VALID
, NL_CB_CUSTOM
, cb_func
, cb_arg
);
382 nl_cb_set(cv
->cb
, NL_CB_VALID
, NL_CB_CUSTOM
, nl80211_msg_response
, &rcv
);
384 err
= nl_send_auto_complete(nls
->nl_sock
, cv
->msg
);
391 nl_cb_err(cv
->cb
, NL_CB_CUSTOM
, nl80211_msg_error
, &err
);
392 nl_cb_set(cv
->cb
, NL_CB_FINISH
, NL_CB_CUSTOM
, nl80211_msg_finish
, &err
);
393 nl_cb_set(cv
->cb
, NL_CB_ACK
, NL_CB_CUSTOM
, nl80211_msg_ack
, &err
);
396 nl_recvmsgs(nls
->nl_sock
, cv
->cb
);
403 static int nl80211_request(const char *ifname
, int cmd
, int flags
,
404 int (*cb_func
)(struct nl_msg
*, void *),
407 struct nl80211_msg_conveyor
*cv
;
409 cv
= nl80211_msg(ifname
, cmd
, flags
);
414 return nl80211_send(cv
, cb_func
, cb_arg
);
417 static struct nlattr
** nl80211_parse(struct nl_msg
*msg
)
419 struct genlmsghdr
*gnlh
= nlmsg_data(nlmsg_hdr(msg
));
420 static struct nlattr
*attr
[NL80211_ATTR_MAX
+ 1];
422 nla_parse(attr
, NL80211_ATTR_MAX
, genlmsg_attrdata(gnlh
, 0),
423 genlmsg_attrlen(gnlh
, 0), NULL
);
428 static int nl80211_get_protocol_features_cb(struct nl_msg
*msg
, void *arg
)
430 uint32_t *features
= arg
;
431 struct nlattr
**attr
= nl80211_parse(msg
);
433 if (attr
[NL80211_ATTR_PROTOCOL_FEATURES
])
434 *features
= nla_get_u32(attr
[NL80211_ATTR_PROTOCOL_FEATURES
]);
439 static int nl80211_get_protocol_features(const char *ifname
)
441 struct nl80211_msg_conveyor
*req
;
442 uint32_t features
= 0;
444 req
= nl80211_msg(ifname
, NL80211_CMD_GET_PROTOCOL_FEATURES
, 0);
446 nl80211_send(req
, nl80211_get_protocol_features_cb
, &features
);
453 static int nl80211_subscribe_cb(struct nl_msg
*msg
, void *arg
)
455 struct nl80211_group_conveyor
*cv
= arg
;
457 struct nlattr
**attr
= nl80211_parse(msg
);
458 struct nlattr
*mgrpinfo
[CTRL_ATTR_MCAST_GRP_MAX
+ 1];
462 if (!attr
[CTRL_ATTR_MCAST_GROUPS
])
465 nla_for_each_nested(mgrp
, attr
[CTRL_ATTR_MCAST_GROUPS
], mgrpidx
)
467 nla_parse(mgrpinfo
, CTRL_ATTR_MCAST_GRP_MAX
,
468 nla_data(mgrp
), nla_len(mgrp
), NULL
);
470 if (mgrpinfo
[CTRL_ATTR_MCAST_GRP_ID
] &&
471 mgrpinfo
[CTRL_ATTR_MCAST_GRP_NAME
] &&
472 !strncmp(nla_data(mgrpinfo
[CTRL_ATTR_MCAST_GRP_NAME
]),
473 cv
->name
, nla_len(mgrpinfo
[CTRL_ATTR_MCAST_GRP_NAME
])))
475 cv
->id
= nla_get_u32(mgrpinfo
[CTRL_ATTR_MCAST_GRP_ID
]);
483 static int nl80211_subscribe(const char *family
, const char *group
)
485 struct nl80211_group_conveyor cv
= { .name
= group
, .id
= -ENOENT
};
486 struct nl80211_msg_conveyor
*req
;
489 req
= nl80211_ctl(CTRL_CMD_GETFAMILY
, 0);
492 NLA_PUT_STRING(req
->msg
, CTRL_ATTR_FAMILY_NAME
, family
);
493 err
= nl80211_send(req
, nl80211_subscribe_cb
, &cv
);
498 return nl_socket_add_membership(nls
->nl_sock
, cv
.id
);
508 static int nl80211_wait_cb(struct nl_msg
*msg
, void *arg
)
510 struct nl80211_event_conveyor
*cv
= arg
;
511 struct genlmsghdr
*gnlh
= nlmsg_data(nlmsg_hdr(msg
));
513 if (cv
->wait
[gnlh
->cmd
/ 32] & (1 << (gnlh
->cmd
% 32)))
514 cv
->recv
= gnlh
->cmd
;
519 static int nl80211_wait_seq_check(struct nl_msg
*msg
, void *arg
)
524 static int __nl80211_wait(const char *family
, const char *group
, ...)
526 struct nl80211_event_conveyor cv
= { };
532 if (nl80211_subscribe(family
, group
))
535 cb
= nl_cb_alloc(NL_CB_DEFAULT
);
540 nl_cb_err(cb
, NL_CB_CUSTOM
, nl80211_msg_error
, &err
);
541 nl_cb_set(cb
, NL_CB_SEQ_CHECK
, NL_CB_CUSTOM
, nl80211_wait_seq_check
, NULL
);
542 nl_cb_set(cb
, NL_CB_VALID
, NL_CB_CUSTOM
, nl80211_wait_cb
, &cv
);
546 for (cmd
= va_arg(ap
, int); cmd
!= 0; cmd
= va_arg(ap
, int))
547 cv
.wait
[cmd
/ 32] |= (1 << (cmd
% 32));
551 while (!cv
.recv
&& !err
)
552 nl_recvmsgs(nls
->nl_sock
, cb
);
559 #define nl80211_wait(family, group, ...) \
560 __nl80211_wait(family, group, __VA_ARGS__, 0)
563 static int nl80211_freq2channel(int freq
)
567 else if (freq
< 2484)
568 return (freq
- 2407) / 5;
569 else if (freq
>= 4910 && freq
<= 4980)
570 return (freq
- 4000) / 5;
572 return (freq
- 5000) / 5;
575 static int nl80211_channel2freq(int channel
, const char *band
)
577 if (!band
|| band
[0] != 'a')
581 else if (channel
< 14)
582 return (channel
* 5) + 2407;
586 if (channel
>= 182 && channel
<= 196)
587 return (channel
* 5) + 4000;
589 return (channel
* 5) + 5000;
595 static int nl80211_ifname2phy_cb(struct nl_msg
*msg
, void *arg
)
598 struct nlattr
**attr
= nl80211_parse(msg
);
600 if (attr
[NL80211_ATTR_WIPHY_NAME
])
601 memcpy(buf
, nla_data(attr
[NL80211_ATTR_WIPHY_NAME
]),
602 nla_len(attr
[NL80211_ATTR_WIPHY_NAME
]));
609 static char * nl80211_ifname2phy(const char *ifname
)
611 static char phy
[32] = { 0 };
613 memset(phy
, 0, sizeof(phy
));
615 nl80211_request(ifname
, NL80211_CMD_GET_WIPHY
, 0,
616 nl80211_ifname2phy_cb
, phy
);
618 return phy
[0] ? phy
: NULL
;
621 static char * nl80211_phy2ifname(const char *ifname
)
623 int ifidx
= -1, cifidx
= -1, phyidx
= -1;
625 static char nif
[IFNAMSIZ
] = { 0 };
630 /* Only accept phy name of the form phy%d or radio%d */
633 else if (!strncmp(ifname
, "phy", 3))
634 phyidx
= atoi(&ifname
[3]);
635 else if (!strncmp(ifname
, "radio", 5))
636 phyidx
= nl80211_phy_idx_from_uci(ifname
);
640 memset(nif
, 0, sizeof(nif
));
644 if ((d
= opendir("/sys/class/net")) != NULL
)
646 while ((e
= readdir(d
)) != NULL
)
648 snprintf(buffer
, sizeof(buffer
),
649 "/sys/class/net/%s/phy80211/index", e
->d_name
);
651 if (nl80211_readint(buffer
) == phyidx
)
653 snprintf(buffer
, sizeof(buffer
),
654 "/sys/class/net/%s/ifindex", e
->d_name
);
656 if ((cifidx
= nl80211_readint(buffer
)) >= 0 &&
657 ((ifidx
< 0) || (cifidx
< ifidx
)))
660 strncpy(nif
, e
->d_name
, sizeof(nif
) - 1);
669 return nif
[0] ? nif
: NULL
;
672 static int nl80211_get_mode_cb(struct nl_msg
*msg
, void *arg
)
675 struct nlattr
**tb
= nl80211_parse(msg
);
676 const int ifmodes
[NL80211_IFTYPE_MAX
+ 1] = {
677 IWINFO_OPMODE_UNKNOWN
, /* unspecified */
678 IWINFO_OPMODE_ADHOC
, /* IBSS */
679 IWINFO_OPMODE_CLIENT
, /* managed */
680 IWINFO_OPMODE_MASTER
, /* AP */
681 IWINFO_OPMODE_AP_VLAN
, /* AP/VLAN */
682 IWINFO_OPMODE_WDS
, /* WDS */
683 IWINFO_OPMODE_MONITOR
, /* monitor */
684 IWINFO_OPMODE_MESHPOINT
, /* mesh point */
685 IWINFO_OPMODE_P2P_CLIENT
, /* P2P-client */
686 IWINFO_OPMODE_P2P_GO
, /* P2P-GO */
689 if (tb
[NL80211_ATTR_IFTYPE
])
690 *mode
= ifmodes
[nla_get_u32(tb
[NL80211_ATTR_IFTYPE
])];
696 static int nl80211_get_mode(const char *ifname
, int *buf
)
700 *buf
= IWINFO_OPMODE_UNKNOWN
;
702 res
= nl80211_phy2ifname(ifname
);
704 nl80211_request(res
? res
: ifname
, NL80211_CMD_GET_INTERFACE
, 0,
705 nl80211_get_mode_cb
, buf
);
707 return (*buf
== IWINFO_OPMODE_UNKNOWN
) ? -1 : 0;
710 static int __nl80211_hostapd_query(const char *ifname
, ...)
713 char *phy
, *search
, *dest
, *key
, *val
, buf
[128];
714 int len
, mode
, found
= 0, match
= 1;
717 if (nl80211_get_mode(ifname
, &mode
))
720 if (mode
!= IWINFO_OPMODE_MASTER
&& mode
!= IWINFO_OPMODE_AP_VLAN
)
723 phy
= nl80211_ifname2phy(ifname
);
728 snprintf(buf
, sizeof(buf
), "/var/run/hostapd-%s.conf", phy
);
729 fp
= fopen(buf
, "r");
734 va_start(ap
, ifname
);
736 /* clear all destination buffers */
739 while ((search
= va_arg(ap_cur
, char *)) != NULL
)
741 dest
= va_arg(ap_cur
, char *);
742 len
= va_arg(ap_cur
, int);
744 memset(dest
, 0, len
);
749 /* iterate applicable lines and copy found values into dest buffers */
750 while (fgets(buf
, sizeof(buf
), fp
))
752 key
= strtok(buf
, " =\t\n");
753 val
= strtok(NULL
, "\n");
755 if (!key
|| !val
|| !*key
|| *key
== '#')
758 if (!strcmp(key
, "interface") || !strcmp(key
, "bss"))
759 match
= !strcmp(ifname
, val
);
766 while ((search
= va_arg(ap_cur
, char *)) != NULL
)
768 dest
= va_arg(ap_cur
, char *);
769 len
= va_arg(ap_cur
, int);
771 if (!strcmp(search
, key
))
773 strncpy(dest
, val
, len
- 1);
789 #define nl80211_hostapd_query(ifname, ...) \
790 __nl80211_hostapd_query(ifname, ##__VA_ARGS__, NULL)
793 static inline int nl80211_wpactl_recv(int sock
, char *buf
, int blen
)
796 struct timeval tv
= { 0, 256000 };
801 memset(buf
, 0, blen
);
803 if (select(sock
+ 1, &rfds
, NULL
, NULL
, &tv
) < 0)
806 if (!FD_ISSET(sock
, &rfds
))
809 return recv(sock
, buf
, blen
- 1, 0);
812 static int nl80211_wpactl_connect(const char *ifname
, struct sockaddr_un
*local
)
814 struct sockaddr_un remote
= { 0 };
815 size_t remote_length
, local_length
;
817 int sock
= socket(PF_UNIX
, SOCK_DGRAM
, 0);
821 remote
.sun_family
= AF_UNIX
;
822 remote_length
= sizeof(remote
.sun_family
) +
823 sprintf(remote
.sun_path
, "/var/run/wpa_supplicant-%s/%s",
826 if (fcntl(sock
, F_SETFD
, fcntl(sock
, F_GETFD
) | FD_CLOEXEC
) < 0)
832 if (connect(sock
, (struct sockaddr
*)&remote
, remote_length
))
834 remote_length
= sizeof(remote
.sun_family
) +
835 sprintf(remote
.sun_path
, "/var/run/wpa_supplicant/%s", ifname
);
837 if (connect(sock
, (struct sockaddr
*)&remote
, remote_length
))
844 local
->sun_family
= AF_UNIX
;
845 local_length
= sizeof(local
->sun_family
) +
846 sprintf(local
->sun_path
, "/var/run/iwinfo-%s-%d", ifname
, getpid());
848 if (bind(sock
, (struct sockaddr
*)local
, local_length
) < 0)
857 static int __nl80211_wpactl_query(const char *ifname
, ...)
860 struct sockaddr_un local
= { 0 };
861 int len
, mode
, found
= 0, sock
= -1;
862 char *search
, *dest
, *key
, *val
, *line
, *pos
, buf
[512];
864 if (nl80211_get_mode(ifname
, &mode
))
867 if (mode
!= IWINFO_OPMODE_CLIENT
&& mode
!= IWINFO_OPMODE_ADHOC
)
870 sock
= nl80211_wpactl_connect(ifname
, &local
);
875 va_start(ap
, ifname
);
877 /* clear all destination buffers */
880 while ((search
= va_arg(ap_cur
, char *)) != NULL
)
882 dest
= va_arg(ap_cur
, char *);
883 len
= va_arg(ap_cur
, int);
885 memset(dest
, 0, len
);
890 send(sock
, "STATUS", 6, 0);
894 if (nl80211_wpactl_recv(sock
, buf
, sizeof(buf
)) <= 0)
900 for (line
= strtok_r(buf
, "\n", &pos
);
902 line
= strtok_r(NULL
, "\n", &pos
))
904 key
= strtok(line
, "=");
905 val
= strtok(NULL
, "\n");
912 while ((search
= va_arg(ap_cur
, char *)) != NULL
)
914 dest
= va_arg(ap_cur
, char *);
915 len
= va_arg(ap_cur
, int);
917 if (!strcmp(search
, key
))
919 strncpy(dest
, val
, len
- 1);
934 unlink(local
.sun_path
);
939 #define nl80211_wpactl_query(ifname, ...) \
940 __nl80211_wpactl_query(ifname, ##__VA_ARGS__, NULL)
943 static char * nl80211_ifadd(const char *ifname
)
946 static char nif
[IFNAMSIZ
] = { 0 };
947 struct nl80211_msg_conveyor
*req
;
950 req
= nl80211_msg(ifname
, NL80211_CMD_NEW_INTERFACE
, 0);
953 snprintf(nif
, sizeof(nif
), "tmp.%s", ifname
);
955 NLA_PUT_STRING(req
->msg
, NL80211_ATTR_IFNAME
, nif
);
956 NLA_PUT_U32(req
->msg
, NL80211_ATTR_IFTYPE
, NL80211_IFTYPE_STATION
);
958 nl80211_send(req
, NULL
, NULL
);
960 snprintf(path
, sizeof(path
) - 1,
961 "/proc/sys/net/ipv6/conf/%s/disable_ipv6", nif
);
963 if ((sysfs
= fopen(path
, "w")) != NULL
)
965 fwrite("0\n", 1, 2, sysfs
);
978 static void nl80211_ifdel(const char *ifname
)
980 struct nl80211_msg_conveyor
*req
;
983 req
= nl80211_msg(ifname
, NL80211_CMD_DEL_INTERFACE
, 0);
986 NLA_PUT_STRING(req
->msg
, NL80211_ATTR_IFNAME
, ifname
);
988 nl80211_send(req
, NULL
, NULL
);
996 static void nl80211_hostapd_hup(const char *ifname
)
1000 char *phy
= nl80211_ifname2phy(ifname
);
1004 snprintf(buf
, sizeof(buf
), "/var/run/wifi-%s.pid", phy
);
1005 if ((fd
= open(buf
, O_RDONLY
)) >= 0)
1007 if (read(fd
, buf
, sizeof(buf
)) > 0)
1019 static int nl80211_probe(const char *ifname
)
1021 return !!nl80211_ifname2phy(ifname
);
1024 struct nl80211_ssid_bssid
{
1025 unsigned char *ssid
;
1026 unsigned char bssid
[7];
1029 static int nl80211_get_ssid_bssid_cb(struct nl_msg
*msg
, void *arg
)
1033 struct nl80211_ssid_bssid
*sb
= arg
;
1034 struct nlattr
**tb
= nl80211_parse(msg
);
1035 struct nlattr
*bss
[NL80211_BSS_MAX
+ 1];
1037 static struct nla_policy bss_policy
[NL80211_BSS_MAX
+ 1] = {
1038 [NL80211_BSS_INFORMATION_ELEMENTS
] = { 0 },
1039 [NL80211_BSS_STATUS
] = { .type
= NLA_U32
},
1042 if (!tb
[NL80211_ATTR_BSS
] ||
1043 nla_parse_nested(bss
, NL80211_BSS_MAX
, tb
[NL80211_ATTR_BSS
],
1045 !bss
[NL80211_BSS_BSSID
] ||
1046 !bss
[NL80211_BSS_STATUS
] ||
1047 !bss
[NL80211_BSS_INFORMATION_ELEMENTS
])
1052 switch (nla_get_u32(bss
[NL80211_BSS_STATUS
]))
1054 case NL80211_BSS_STATUS_ASSOCIATED
:
1055 case NL80211_BSS_STATUS_AUTHENTICATED
:
1056 case NL80211_BSS_STATUS_IBSS_JOINED
:
1060 ie
= nla_data(bss
[NL80211_BSS_INFORMATION_ELEMENTS
]);
1061 ielen
= nla_len(bss
[NL80211_BSS_INFORMATION_ELEMENTS
]);
1063 while (ielen
>= 2 && ielen
>= ie
[1])
1067 memcpy(sb
->ssid
, ie
+ 2, min(ie
[1], IWINFO_ESSID_MAX_SIZE
));
1078 memcpy(sb
->bssid
+ 1, nla_data(bss
[NL80211_BSS_BSSID
]), 6);
1087 static int nl80211_get_ssid(const char *ifname
, char *buf
)
1090 struct nl80211_ssid_bssid sb
= { .ssid
= (unsigned char *)buf
};
1092 /* try to find ssid from scan dump results */
1093 res
= nl80211_phy2ifname(ifname
);
1096 nl80211_request(res
? res
: ifname
, NL80211_CMD_GET_SCAN
, NLM_F_DUMP
,
1097 nl80211_get_ssid_bssid_cb
, &sb
);
1099 /* failed, try to find from hostapd info */
1100 if (sb
.ssid
[0] == 0)
1101 nl80211_hostapd_query(ifname
, "ssid", sb
.ssid
,
1102 IWINFO_ESSID_MAX_SIZE
+ 1);
1104 return (sb
.ssid
[0] == 0) ? -1 : 0;
1107 static int nl80211_get_bssid(const char *ifname
, char *buf
)
1109 char *res
, bssid
[sizeof("FF:FF:FF:FF:FF:FF\0")];
1110 struct nl80211_ssid_bssid sb
= { };
1112 /* try to find bssid from scan dump results */
1113 res
= nl80211_phy2ifname(ifname
);
1115 nl80211_request(res
? res
: ifname
, NL80211_CMD_GET_SCAN
, NLM_F_DUMP
,
1116 nl80211_get_ssid_bssid_cb
, &sb
);
1118 /* failed, try to find mac from hostapd info */
1119 if ((sb
.bssid
[0] == 0) &&
1120 nl80211_hostapd_query(ifname
, "bssid", bssid
, sizeof(bssid
)))
1123 sb
.bssid
[1] = strtol(&bssid
[0], NULL
, 16);
1124 sb
.bssid
[2] = strtol(&bssid
[3], NULL
, 16);
1125 sb
.bssid
[3] = strtol(&bssid
[6], NULL
, 16);
1126 sb
.bssid
[4] = strtol(&bssid
[9], NULL
, 16);
1127 sb
.bssid
[5] = strtol(&bssid
[12], NULL
, 16);
1128 sb
.bssid
[6] = strtol(&bssid
[15], NULL
, 16);
1133 sprintf(buf
, "%02X:%02X:%02X:%02X:%02X:%02X",
1134 sb
.bssid
[1], sb
.bssid
[2], sb
.bssid
[3],
1135 sb
.bssid
[4], sb
.bssid
[5], sb
.bssid
[6]);
1144 static int nl80211_get_frequency_scan_cb(struct nl_msg
*msg
, void *arg
)
1147 struct nlattr
**attr
= nl80211_parse(msg
);
1148 struct nlattr
*binfo
[NL80211_BSS_MAX
+ 1];
1150 static struct nla_policy bss_policy
[NL80211_BSS_MAX
+ 1] = {
1151 [NL80211_BSS_FREQUENCY
] = { .type
= NLA_U32
},
1152 [NL80211_BSS_STATUS
] = { .type
= NLA_U32
},
1155 if (attr
[NL80211_ATTR_BSS
] &&
1156 !nla_parse_nested(binfo
, NL80211_BSS_MAX
,
1157 attr
[NL80211_ATTR_BSS
], bss_policy
))
1159 if (binfo
[NL80211_BSS_STATUS
] && binfo
[NL80211_BSS_FREQUENCY
])
1160 *freq
= nla_get_u32(binfo
[NL80211_BSS_FREQUENCY
]);
1166 static int nl80211_get_frequency_info_cb(struct nl_msg
*msg
, void *arg
)
1169 struct nlattr
**tb
= nl80211_parse(msg
);
1171 if (tb
[NL80211_ATTR_WIPHY_FREQ
])
1172 *freq
= nla_get_u32(tb
[NL80211_ATTR_WIPHY_FREQ
]);
1177 static int nl80211_get_frequency(const char *ifname
, int *buf
)
1179 char *res
, channel
[4], hwmode
[2];
1181 /* try to find frequency from interface info */
1182 res
= nl80211_phy2ifname(ifname
);
1185 nl80211_request(res
? res
: ifname
, NL80211_CMD_GET_INTERFACE
, 0,
1186 nl80211_get_frequency_info_cb
, buf
);
1188 /* failed, try to find frequency from hostapd info */
1190 nl80211_hostapd_query(ifname
, "hw_mode", hwmode
, sizeof(hwmode
),
1191 "channel", channel
, sizeof(channel
)) == 2)
1193 *buf
= nl80211_channel2freq(atoi(channel
), hwmode
);
1196 /* failed, try to find frequency from scan results */
1199 res
= nl80211_phy2ifname(ifname
);
1201 nl80211_request(res
? res
: ifname
, NL80211_CMD_GET_SCAN
, NLM_F_DUMP
,
1202 nl80211_get_frequency_scan_cb
, buf
);
1205 return (*buf
== 0) ? -1 : 0;
1208 static int nl80211_get_channel(const char *ifname
, int *buf
)
1210 if (!nl80211_get_frequency(ifname
, buf
))
1212 *buf
= nl80211_freq2channel(*buf
);
1219 static int nl80211_get_txpower_cb(struct nl_msg
*msg
, void *arg
)
1222 struct nlattr
**tb
= nl80211_parse(msg
);
1224 if (tb
[NL80211_ATTR_WIPHY_TX_POWER_LEVEL
])
1225 *buf
= iwinfo_mbm2dbm(nla_get_u32(tb
[NL80211_ATTR_WIPHY_TX_POWER_LEVEL
]));
1230 static int nl80211_get_txpower(const char *ifname
, int *buf
)
1234 res
= nl80211_phy2ifname(ifname
);
1237 if (nl80211_request(res
? res
: ifname
, NL80211_CMD_GET_INTERFACE
, 0,
1238 nl80211_get_txpower_cb
, buf
))
1245 static int nl80211_fill_signal_cb(struct nl_msg
*msg
, void *arg
)
1249 struct nl80211_rssi_rate
*rr
= arg
;
1250 struct nlattr
**attr
= nl80211_parse(msg
);
1251 struct nlattr
*sinfo
[NL80211_STA_INFO_MAX
+ 1];
1252 struct nlattr
*rinfo
[NL80211_RATE_INFO_MAX
+ 1];
1254 static struct nla_policy stats_policy
[NL80211_STA_INFO_MAX
+ 1] = {
1255 [NL80211_STA_INFO_INACTIVE_TIME
] = { .type
= NLA_U32
},
1256 [NL80211_STA_INFO_RX_BYTES
] = { .type
= NLA_U32
},
1257 [NL80211_STA_INFO_TX_BYTES
] = { .type
= NLA_U32
},
1258 [NL80211_STA_INFO_RX_PACKETS
] = { .type
= NLA_U32
},
1259 [NL80211_STA_INFO_TX_PACKETS
] = { .type
= NLA_U32
},
1260 [NL80211_STA_INFO_SIGNAL
] = { .type
= NLA_U8
},
1261 [NL80211_STA_INFO_TX_BITRATE
] = { .type
= NLA_NESTED
},
1262 [NL80211_STA_INFO_LLID
] = { .type
= NLA_U16
},
1263 [NL80211_STA_INFO_PLID
] = { .type
= NLA_U16
},
1264 [NL80211_STA_INFO_PLINK_STATE
] = { .type
= NLA_U8
},
1267 static struct nla_policy rate_policy
[NL80211_RATE_INFO_MAX
+ 1] = {
1268 [NL80211_RATE_INFO_BITRATE
] = { .type
= NLA_U16
},
1269 [NL80211_RATE_INFO_MCS
] = { .type
= NLA_U8
},
1270 [NL80211_RATE_INFO_40_MHZ_WIDTH
] = { .type
= NLA_FLAG
},
1271 [NL80211_RATE_INFO_SHORT_GI
] = { .type
= NLA_FLAG
},
1274 if (attr
[NL80211_ATTR_STA_INFO
])
1276 if (!nla_parse_nested(sinfo
, NL80211_STA_INFO_MAX
,
1277 attr
[NL80211_ATTR_STA_INFO
], stats_policy
))
1279 if (sinfo
[NL80211_STA_INFO_SIGNAL
])
1281 dbm
= nla_get_u8(sinfo
[NL80211_STA_INFO_SIGNAL
]);
1282 rr
->rssi
= (rr
->rssi
* rr
->rssi_samples
+ dbm
) / (rr
->rssi_samples
+ 1);
1286 if (sinfo
[NL80211_STA_INFO_TX_BITRATE
])
1288 if (!nla_parse_nested(rinfo
, NL80211_RATE_INFO_MAX
,
1289 sinfo
[NL80211_STA_INFO_TX_BITRATE
],
1292 if (rinfo
[NL80211_RATE_INFO_BITRATE
])
1294 mbit
= nla_get_u16(rinfo
[NL80211_RATE_INFO_BITRATE
]);
1295 rr
->rate
= (rr
->rate
* rr
->rate_samples
+ mbit
) / (rr
->rate_samples
+ 1);
1306 static void nl80211_fill_signal(const char *ifname
, struct nl80211_rssi_rate
*r
)
1311 memset(r
, 0, sizeof(*r
));
1313 if ((d
= opendir("/sys/class/net")) != NULL
)
1315 while ((de
= readdir(d
)) != NULL
)
1317 if (!strncmp(de
->d_name
, ifname
, strlen(ifname
)) &&
1318 (!de
->d_name
[strlen(ifname
)] ||
1319 !strncmp(&de
->d_name
[strlen(ifname
)], ".sta", 4)))
1321 nl80211_request(de
->d_name
, NL80211_CMD_GET_STATION
,
1322 NLM_F_DUMP
, nl80211_fill_signal_cb
, r
);
1330 static int nl80211_get_bitrate(const char *ifname
, int *buf
)
1332 struct nl80211_rssi_rate rr
;
1334 nl80211_fill_signal(ifname
, &rr
);
1336 if (rr
.rate_samples
)
1338 *buf
= (rr
.rate
* 100);
1345 static int nl80211_get_signal(const char *ifname
, int *buf
)
1347 struct nl80211_rssi_rate rr
;
1349 nl80211_fill_signal(ifname
, &rr
);
1351 if (rr
.rssi_samples
)
1360 static int nl80211_get_noise_cb(struct nl_msg
*msg
, void *arg
)
1362 int8_t *noise
= arg
;
1363 struct nlattr
**tb
= nl80211_parse(msg
);
1364 struct nlattr
*si
[NL80211_SURVEY_INFO_MAX
+ 1];
1366 static struct nla_policy sp
[NL80211_SURVEY_INFO_MAX
+ 1] = {
1367 [NL80211_SURVEY_INFO_FREQUENCY
] = { .type
= NLA_U32
},
1368 [NL80211_SURVEY_INFO_NOISE
] = { .type
= NLA_U8
},
1371 if (!tb
[NL80211_ATTR_SURVEY_INFO
])
1374 if (nla_parse_nested(si
, NL80211_SURVEY_INFO_MAX
,
1375 tb
[NL80211_ATTR_SURVEY_INFO
], sp
))
1378 if (!si
[NL80211_SURVEY_INFO_NOISE
])
1381 if (!*noise
|| si
[NL80211_SURVEY_INFO_IN_USE
])
1382 *noise
= (int8_t)nla_get_u8(si
[NL80211_SURVEY_INFO_NOISE
]);
1388 static int nl80211_get_noise(const char *ifname
, int *buf
)
1392 if (nl80211_request(ifname
, NL80211_CMD_GET_SURVEY
, NLM_F_DUMP
,
1393 nl80211_get_noise_cb
, &noise
))
1404 static int nl80211_get_quality(const char *ifname
, int *buf
)
1408 if (!nl80211_get_signal(ifname
, &signal
))
1410 /* A positive signal level is usually just a quality
1411 * value, pass through as-is */
1417 /* The cfg80211 wext compat layer assumes a signal range
1418 * of -110 dBm to -40 dBm, the quality value is derived
1419 * by adding 110 to the signal level */
1424 else if (signal
> -40)
1427 *buf
= (signal
+ 110);
1436 static int nl80211_get_quality_max(const char *ifname
, int *buf
)
1438 /* The cfg80211 wext compat layer assumes a maximum
1445 static int nl80211_check_wepkey(const char *key
)
1449 switch (strlen(key
))
1453 return IWINFO_CIPHER_WEP40
;
1457 return IWINFO_CIPHER_WEP104
;
1464 static int nl80211_get_encryption(const char *ifname
, char *buf
)
1466 char wpa
[2], wpa_key_mgmt
[16], wpa_pairwise
[16], wpa_groupwise
[16];
1467 char auth_algs
[2], wep_key0
[27], wep_key1
[27], wep_key2
[27], wep_key3
[27];
1469 struct iwinfo_crypto_entry
*c
= (struct iwinfo_crypto_entry
*)buf
;
1471 /* WPA supplicant */
1472 if (nl80211_wpactl_query(ifname
,
1473 "pairwise_cipher", wpa_pairwise
, sizeof(wpa_pairwise
),
1474 "group_cipher", wpa_groupwise
, sizeof(wpa_groupwise
),
1475 "key_mgmt", wpa_key_mgmt
, sizeof(wpa_key_mgmt
)))
1478 if (!strcmp(wpa_key_mgmt
, "NONE"))
1480 if (strstr(wpa_pairwise
, "WEP-40"))
1481 c
->pair_ciphers
|= IWINFO_CIPHER_WEP40
;
1482 else if (strstr(wpa_pairwise
, "WEP-104"))
1483 c
->pair_ciphers
|= IWINFO_CIPHER_WEP104
;
1485 if (strstr(wpa_groupwise
, "WEP-40"))
1486 c
->group_ciphers
|= IWINFO_CIPHER_WEP40
;
1487 else if (strstr(wpa_groupwise
, "WEP-104"))
1488 c
->group_ciphers
|= IWINFO_CIPHER_WEP104
;
1490 c
->enabled
= !!(c
->pair_ciphers
| c
->group_ciphers
);
1491 c
->auth_suites
|= IWINFO_KMGMT_NONE
;
1492 c
->auth_algs
|= IWINFO_AUTH_OPEN
; /* XXX: assumption */
1496 else if (strstr(wpa_key_mgmt
, "WPA"))
1498 if (strstr(wpa_pairwise
, "TKIP"))
1499 c
->pair_ciphers
|= IWINFO_CIPHER_TKIP
;
1500 else if (strstr(wpa_pairwise
, "CCMP"))
1501 c
->pair_ciphers
|= IWINFO_CIPHER_CCMP
;
1502 else if (strstr(wpa_pairwise
, "NONE"))
1503 c
->pair_ciphers
|= IWINFO_CIPHER_NONE
;
1504 else if (strstr(wpa_pairwise
, "WEP-40"))
1505 c
->pair_ciphers
|= IWINFO_CIPHER_WEP40
;
1506 else if (strstr(wpa_pairwise
, "WEP-104"))
1507 c
->pair_ciphers
|= IWINFO_CIPHER_WEP104
;
1509 if (strstr(wpa_groupwise
, "TKIP"))
1510 c
->group_ciphers
|= IWINFO_CIPHER_TKIP
;
1511 else if (strstr(wpa_groupwise
, "CCMP"))
1512 c
->group_ciphers
|= IWINFO_CIPHER_CCMP
;
1513 else if (strstr(wpa_groupwise
, "NONE"))
1514 c
->group_ciphers
|= IWINFO_CIPHER_NONE
;
1515 else if (strstr(wpa_groupwise
, "WEP-40"))
1516 c
->group_ciphers
|= IWINFO_CIPHER_WEP40
;
1517 else if (strstr(wpa_groupwise
, "WEP-104"))
1518 c
->group_ciphers
|= IWINFO_CIPHER_WEP104
;
1520 if (strstr(wpa_key_mgmt
, "WPA2"))
1522 else if (strstr(wpa_key_mgmt
, "WPA"))
1525 if (strstr(wpa_key_mgmt
, "PSK"))
1526 c
->auth_suites
|= IWINFO_KMGMT_PSK
;
1527 else if (strstr(wpa_key_mgmt
, "EAP") ||
1528 strstr(wpa_key_mgmt
, "802.1X"))
1529 c
->auth_suites
|= IWINFO_KMGMT_8021x
;
1530 else if (strstr(wpa_key_mgmt
, "NONE"))
1531 c
->auth_suites
|= IWINFO_KMGMT_NONE
;
1533 c
->enabled
= !!(c
->wpa_version
&& c
->auth_suites
);
1540 else if (nl80211_hostapd_query(ifname
,
1541 "wpa", wpa
, sizeof(wpa
),
1542 "wpa_key_mgmt", wpa_key_mgmt
, sizeof(wpa_key_mgmt
),
1543 "wpa_pairwise", wpa_pairwise
, sizeof(wpa_pairwise
),
1544 "auth_algs", auth_algs
, sizeof(auth_algs
),
1545 "wep_key0", wep_key0
, sizeof(wep_key0
),
1546 "wep_key1", wep_key1
, sizeof(wep_key1
),
1547 "wep_key2", wep_key2
, sizeof(wep_key2
),
1548 "wep_key3", wep_key3
, sizeof(wep_key3
)))
1550 c
->wpa_version
= wpa
[0] ? atoi(wpa
) : 0;
1552 if (wpa_key_mgmt
[0])
1554 if (strstr(wpa_key_mgmt
, "PSK"))
1555 c
->auth_suites
|= IWINFO_KMGMT_PSK
;
1557 if (strstr(wpa_key_mgmt
, "EAP"))
1558 c
->auth_suites
|= IWINFO_KMGMT_8021x
;
1560 if (strstr(wpa_key_mgmt
, "NONE"))
1561 c
->auth_suites
|= IWINFO_KMGMT_NONE
;
1565 c
->auth_suites
|= IWINFO_KMGMT_PSK
;
1568 if (wpa_pairwise
[0])
1570 if (strstr(wpa_pairwise
, "TKIP"))
1571 c
->pair_ciphers
|= IWINFO_CIPHER_TKIP
;
1573 if (strstr(wpa_pairwise
, "CCMP"))
1574 c
->pair_ciphers
|= IWINFO_CIPHER_CCMP
;
1576 if (strstr(wpa_pairwise
, "NONE"))
1577 c
->pair_ciphers
|= IWINFO_CIPHER_NONE
;
1582 switch(atoi(auth_algs
))
1585 c
->auth_algs
|= IWINFO_AUTH_OPEN
;
1589 c
->auth_algs
|= IWINFO_AUTH_SHARED
;
1593 c
->auth_algs
|= IWINFO_AUTH_OPEN
;
1594 c
->auth_algs
|= IWINFO_AUTH_SHARED
;
1598 c
->pair_ciphers
|= nl80211_check_wepkey(wep_key0
);
1599 c
->pair_ciphers
|= nl80211_check_wepkey(wep_key1
);
1600 c
->pair_ciphers
|= nl80211_check_wepkey(wep_key2
);
1601 c
->pair_ciphers
|= nl80211_check_wepkey(wep_key3
);
1604 c
->group_ciphers
= c
->pair_ciphers
;
1605 c
->enabled
= (c
->wpa_version
|| c
->pair_ciphers
) ? 1 : 0;
1613 static int nl80211_get_phyname(const char *ifname
, char *buf
)
1617 name
= nl80211_ifname2phy(ifname
);
1624 else if ((name
= nl80211_phy2ifname(ifname
)) != NULL
)
1626 name
= nl80211_ifname2phy(name
);
1630 strcpy(buf
, ifname
);
1639 static void nl80211_parse_rateinfo(struct nlattr
**ri
,
1640 struct iwinfo_rate_entry
*re
)
1642 if (ri
[NL80211_RATE_INFO_BITRATE32
])
1643 re
->rate
= nla_get_u32(ri
[NL80211_RATE_INFO_BITRATE32
]) * 100;
1644 else if (ri
[NL80211_RATE_INFO_BITRATE
])
1645 re
->rate
= nla_get_u16(ri
[NL80211_RATE_INFO_BITRATE
]) * 100;
1647 if (ri
[NL80211_RATE_INFO_VHT_MCS
])
1650 re
->mcs
= nla_get_u8(ri
[NL80211_RATE_INFO_VHT_MCS
]);
1652 if (ri
[NL80211_RATE_INFO_VHT_NSS
])
1653 re
->nss
= nla_get_u8(ri
[NL80211_RATE_INFO_VHT_NSS
]);
1655 else if (ri
[NL80211_RATE_INFO_MCS
])
1658 re
->mcs
= nla_get_u8(ri
[NL80211_RATE_INFO_MCS
]);
1661 if (ri
[NL80211_RATE_INFO_5_MHZ_WIDTH
])
1663 else if (ri
[NL80211_RATE_INFO_10_MHZ_WIDTH
])
1665 else if (ri
[NL80211_RATE_INFO_40_MHZ_WIDTH
])
1667 else if (ri
[NL80211_RATE_INFO_80_MHZ_WIDTH
])
1669 else if (ri
[NL80211_RATE_INFO_80P80_MHZ_WIDTH
] ||
1670 ri
[NL80211_RATE_INFO_160_MHZ_WIDTH
])
1675 if (ri
[NL80211_RATE_INFO_SHORT_GI
])
1676 re
->is_short_gi
= 1;
1678 re
->is_40mhz
= (re
->mhz
== 40);
1681 static int nl80211_get_survey_cb(struct nl_msg
*msg
, void *arg
)
1683 struct nl80211_array_buf
*arr
= arg
;
1684 struct iwinfo_survey_entry
*e
= arr
->buf
;
1685 struct nlattr
**attr
= nl80211_parse(msg
);
1686 struct nlattr
*sinfo
[NL80211_SURVEY_INFO_MAX
+ 1];
1689 static struct nla_policy survey_policy
[NL80211_SURVEY_INFO_MAX
+ 1] = {
1690 [NL80211_SURVEY_INFO_FREQUENCY
] = { .type
= NLA_U32
},
1691 [NL80211_SURVEY_INFO_NOISE
] = { .type
= NLA_U8
},
1692 [NL80211_SURVEY_INFO_TIME
] = { .type
= NLA_U64
},
1693 [NL80211_SURVEY_INFO_TIME_BUSY
] = { .type
= NLA_U64
},
1694 [NL80211_SURVEY_INFO_TIME_EXT_BUSY
] = { .type
= NLA_U64
},
1695 [NL80211_SURVEY_INFO_TIME_RX
] = { .type
= NLA_U64
},
1696 [NL80211_SURVEY_INFO_TIME_TX
] = { .type
= NLA_U64
},
1699 rc
= nla_parse_nested(sinfo
, NL80211_SURVEY_INFO_MAX
,
1700 attr
[NL80211_ATTR_SURVEY_INFO
],
1705 /* advance to end of array */
1707 memset(e
, 0, sizeof(*e
));
1709 if (sinfo
[NL80211_SURVEY_INFO_FREQUENCY
])
1710 e
->mhz
= nla_get_u32(sinfo
[NL80211_SURVEY_INFO_FREQUENCY
]);
1712 if (sinfo
[NL80211_SURVEY_INFO_NOISE
])
1713 e
->noise
= nla_get_u8(sinfo
[NL80211_SURVEY_INFO_NOISE
]);
1715 if (sinfo
[NL80211_SURVEY_INFO_TIME
])
1716 e
->active_time
= nla_get_u64(sinfo
[NL80211_SURVEY_INFO_TIME
]);
1718 if (sinfo
[NL80211_SURVEY_INFO_TIME_BUSY
])
1719 e
->busy_time
= nla_get_u64(sinfo
[NL80211_SURVEY_INFO_TIME_BUSY
]);
1721 if (sinfo
[NL80211_SURVEY_INFO_TIME_EXT_BUSY
])
1722 e
->busy_time_ext
= nla_get_u64(sinfo
[NL80211_SURVEY_INFO_TIME_EXT_BUSY
]);
1724 if (sinfo
[NL80211_SURVEY_INFO_TIME_RX
])
1725 e
->rxtime
= nla_get_u64(sinfo
[NL80211_SURVEY_INFO_TIME_RX
]);
1727 if (sinfo
[NL80211_SURVEY_INFO_TIME_TX
])
1728 e
->txtime
= nla_get_u64(sinfo
[NL80211_SURVEY_INFO_TIME_TX
]);
1734 static int nl80211_get_assoclist_cb(struct nl_msg
*msg
, void *arg
)
1736 struct nl80211_array_buf
*arr
= arg
;
1737 struct iwinfo_assoclist_entry
*e
= arr
->buf
;
1738 struct nlattr
**attr
= nl80211_parse(msg
);
1739 struct nlattr
*sinfo
[NL80211_STA_INFO_MAX
+ 1];
1740 struct nlattr
*rinfo
[NL80211_RATE_INFO_MAX
+ 1];
1741 struct nl80211_sta_flag_update
*sta_flags
;
1743 static struct nla_policy stats_policy
[NL80211_STA_INFO_MAX
+ 1] = {
1744 [NL80211_STA_INFO_INACTIVE_TIME
] = { .type
= NLA_U32
},
1745 [NL80211_STA_INFO_RX_PACKETS
] = { .type
= NLA_U32
},
1746 [NL80211_STA_INFO_TX_PACKETS
] = { .type
= NLA_U32
},
1747 [NL80211_STA_INFO_RX_BITRATE
] = { .type
= NLA_NESTED
},
1748 [NL80211_STA_INFO_TX_BITRATE
] = { .type
= NLA_NESTED
},
1749 [NL80211_STA_INFO_SIGNAL
] = { .type
= NLA_U8
},
1750 [NL80211_STA_INFO_SIGNAL_AVG
] = { .type
= NLA_U8
},
1751 [NL80211_STA_INFO_RX_BYTES
] = { .type
= NLA_U32
},
1752 [NL80211_STA_INFO_TX_BYTES
] = { .type
= NLA_U32
},
1753 [NL80211_STA_INFO_TX_RETRIES
] = { .type
= NLA_U32
},
1754 [NL80211_STA_INFO_TX_FAILED
] = { .type
= NLA_U32
},
1755 [NL80211_STA_INFO_CONNECTED_TIME
]= { .type
= NLA_U32
},
1756 [NL80211_STA_INFO_RX_DROP_MISC
] = { .type
= NLA_U64
},
1757 [NL80211_STA_INFO_T_OFFSET
] = { .type
= NLA_U64
},
1758 [NL80211_STA_INFO_STA_FLAGS
] =
1759 { .minlen
= sizeof(struct nl80211_sta_flag_update
) },
1760 [NL80211_STA_INFO_EXPECTED_THROUGHPUT
] = { .type
= NLA_U32
},
1763 static struct nla_policy rate_policy
[NL80211_RATE_INFO_MAX
+ 1] = {
1764 [NL80211_RATE_INFO_BITRATE
] = { .type
= NLA_U16
},
1765 [NL80211_RATE_INFO_MCS
] = { .type
= NLA_U8
},
1766 [NL80211_RATE_INFO_40_MHZ_WIDTH
] = { .type
= NLA_FLAG
},
1767 [NL80211_RATE_INFO_SHORT_GI
] = { .type
= NLA_FLAG
},
1770 /* advance to end of array */
1772 memset(e
, 0, sizeof(*e
));
1774 if (attr
[NL80211_ATTR_MAC
])
1775 memcpy(e
->mac
, nla_data(attr
[NL80211_ATTR_MAC
]), 6);
1777 if (attr
[NL80211_ATTR_STA_INFO
] &&
1778 !nla_parse_nested(sinfo
, NL80211_STA_INFO_MAX
,
1779 attr
[NL80211_ATTR_STA_INFO
], stats_policy
))
1781 if (sinfo
[NL80211_STA_INFO_SIGNAL
])
1782 e
->signal
= nla_get_u8(sinfo
[NL80211_STA_INFO_SIGNAL
]);
1784 if (sinfo
[NL80211_STA_INFO_SIGNAL_AVG
])
1785 e
->signal_avg
= nla_get_u8(sinfo
[NL80211_STA_INFO_SIGNAL_AVG
]);
1787 if (sinfo
[NL80211_STA_INFO_INACTIVE_TIME
])
1788 e
->inactive
= nla_get_u32(sinfo
[NL80211_STA_INFO_INACTIVE_TIME
]);
1790 if (sinfo
[NL80211_STA_INFO_CONNECTED_TIME
])
1791 e
->connected_time
= nla_get_u32(sinfo
[NL80211_STA_INFO_CONNECTED_TIME
]);
1793 if (sinfo
[NL80211_STA_INFO_RX_PACKETS
])
1794 e
->rx_packets
= nla_get_u32(sinfo
[NL80211_STA_INFO_RX_PACKETS
]);
1796 if (sinfo
[NL80211_STA_INFO_TX_PACKETS
])
1797 e
->tx_packets
= nla_get_u32(sinfo
[NL80211_STA_INFO_TX_PACKETS
]);
1799 if (sinfo
[NL80211_STA_INFO_RX_BITRATE
] &&
1800 !nla_parse_nested(rinfo
, NL80211_RATE_INFO_MAX
,
1801 sinfo
[NL80211_STA_INFO_RX_BITRATE
], rate_policy
))
1802 nl80211_parse_rateinfo(rinfo
, &e
->rx_rate
);
1804 if (sinfo
[NL80211_STA_INFO_TX_BITRATE
] &&
1805 !nla_parse_nested(rinfo
, NL80211_RATE_INFO_MAX
,
1806 sinfo
[NL80211_STA_INFO_TX_BITRATE
], rate_policy
))
1807 nl80211_parse_rateinfo(rinfo
, &e
->tx_rate
);
1809 if (sinfo
[NL80211_STA_INFO_RX_BYTES
])
1810 e
->rx_bytes
= nla_get_u32(sinfo
[NL80211_STA_INFO_RX_BYTES
]);
1812 if (sinfo
[NL80211_STA_INFO_TX_BYTES
])
1813 e
->tx_bytes
= nla_get_u32(sinfo
[NL80211_STA_INFO_TX_BYTES
]);
1815 if (sinfo
[NL80211_STA_INFO_TX_RETRIES
])
1816 e
->tx_retries
= nla_get_u32(sinfo
[NL80211_STA_INFO_TX_RETRIES
]);
1818 if (sinfo
[NL80211_STA_INFO_TX_FAILED
])
1819 e
->tx_failed
= nla_get_u32(sinfo
[NL80211_STA_INFO_TX_FAILED
]);
1821 if (sinfo
[NL80211_STA_INFO_T_OFFSET
])
1822 e
->t_offset
= nla_get_u64(sinfo
[NL80211_STA_INFO_T_OFFSET
]);
1824 if (sinfo
[NL80211_STA_INFO_RX_DROP_MISC
])
1825 e
->rx_drop_misc
= nla_get_u64(sinfo
[NL80211_STA_INFO_RX_DROP_MISC
]);
1827 if (sinfo
[NL80211_STA_INFO_EXPECTED_THROUGHPUT
])
1828 e
->thr
= nla_get_u32(sinfo
[NL80211_STA_INFO_EXPECTED_THROUGHPUT
]);
1831 if (sinfo
[NL80211_STA_INFO_STA_FLAGS
])
1833 sta_flags
= (struct nl80211_sta_flag_update
*)
1834 nla_data(sinfo
[NL80211_STA_INFO_STA_FLAGS
]);
1836 if (sta_flags
->mask
& BIT(NL80211_STA_FLAG_AUTHORIZED
) &&
1837 sta_flags
->set
& BIT(NL80211_STA_FLAG_AUTHORIZED
))
1838 e
->is_authorized
= 1;
1840 if (sta_flags
->mask
& BIT(NL80211_STA_FLAG_AUTHENTICATED
) &&
1841 sta_flags
->set
& BIT(NL80211_STA_FLAG_AUTHENTICATED
))
1842 e
->is_authenticated
= 1;
1844 if (sta_flags
->mask
& BIT(NL80211_STA_FLAG_SHORT_PREAMBLE
) &&
1845 sta_flags
->set
& BIT(NL80211_STA_FLAG_SHORT_PREAMBLE
))
1846 e
->is_preamble_short
= 1;
1848 if (sta_flags
->mask
& BIT(NL80211_STA_FLAG_WME
) &&
1849 sta_flags
->set
& BIT(NL80211_STA_FLAG_WME
))
1852 if (sta_flags
->mask
& BIT(NL80211_STA_FLAG_MFP
) &&
1853 sta_flags
->set
& BIT(NL80211_STA_FLAG_MFP
))
1856 if (sta_flags
->mask
& BIT(NL80211_STA_FLAG_TDLS_PEER
) &&
1857 sta_flags
->set
& BIT(NL80211_STA_FLAG_TDLS_PEER
))
1862 e
->noise
= 0; /* filled in by caller */
1868 static int nl80211_get_survey(const char *ifname
, char *buf
, int *len
)
1870 struct nl80211_array_buf arr
= { .buf
= buf
, .count
= 0 };
1873 rc
= nl80211_request(ifname
, NL80211_CMD_GET_SURVEY
,
1874 NLM_F_DUMP
, nl80211_get_survey_cb
, &arr
);
1876 *len
= (arr
.count
* sizeof(struct iwinfo_survey_entry
));
1883 static int nl80211_get_assoclist(const char *ifname
, char *buf
, int *len
)
1888 struct nl80211_array_buf arr
= { .buf
= buf
, .count
= 0 };
1889 struct iwinfo_assoclist_entry
*e
;
1891 if ((d
= opendir("/sys/class/net")) != NULL
)
1893 while ((de
= readdir(d
)) != NULL
)
1895 if (!strncmp(de
->d_name
, ifname
, strlen(ifname
)) &&
1896 (!de
->d_name
[strlen(ifname
)] ||
1897 !strncmp(&de
->d_name
[strlen(ifname
)], ".sta", 4)))
1899 nl80211_request(de
->d_name
, NL80211_CMD_GET_STATION
,
1900 NLM_F_DUMP
, nl80211_get_assoclist_cb
, &arr
);
1906 if (!nl80211_get_noise(ifname
, &noise
))
1907 for (i
= 0, e
= arr
.buf
; i
< arr
.count
; i
++, e
++)
1910 *len
= (arr
.count
* sizeof(struct iwinfo_assoclist_entry
));
1917 static int nl80211_get_txpwrlist_cb(struct nl_msg
*msg
, void *arg
)
1920 int ch_cur
, ch_cmp
, bands_remain
, freqs_remain
;
1922 struct nlattr
**attr
= nl80211_parse(msg
);
1923 struct nlattr
*bands
[NL80211_BAND_ATTR_MAX
+ 1];
1924 struct nlattr
*freqs
[NL80211_FREQUENCY_ATTR_MAX
+ 1];
1925 struct nlattr
*band
, *freq
;
1927 static struct nla_policy freq_policy
[NL80211_FREQUENCY_ATTR_MAX
+ 1] = {
1928 [NL80211_FREQUENCY_ATTR_FREQ
] = { .type
= NLA_U32
},
1929 [NL80211_FREQUENCY_ATTR_DISABLED
] = { .type
= NLA_FLAG
},
1930 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN
] = { .type
= NLA_FLAG
},
1931 [NL80211_FREQUENCY_ATTR_NO_IBSS
] = { .type
= NLA_FLAG
},
1932 [NL80211_FREQUENCY_ATTR_RADAR
] = { .type
= NLA_FLAG
},
1933 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER
] = { .type
= NLA_U32
},
1936 ch_cur
= *dbm_max
; /* value int* is initialized with channel by caller */
1939 nla_for_each_nested(band
, attr
[NL80211_ATTR_WIPHY_BANDS
], bands_remain
)
1941 nla_parse(bands
, NL80211_BAND_ATTR_MAX
, nla_data(band
),
1942 nla_len(band
), NULL
);
1944 nla_for_each_nested(freq
, bands
[NL80211_BAND_ATTR_FREQS
], freqs_remain
)
1946 nla_parse(freqs
, NL80211_FREQUENCY_ATTR_MAX
,
1947 nla_data(freq
), nla_len(freq
), freq_policy
);
1949 ch_cmp
= nl80211_freq2channel(nla_get_u32(
1950 freqs
[NL80211_FREQUENCY_ATTR_FREQ
]));
1952 if ((!ch_cur
|| (ch_cmp
== ch_cur
)) &&
1953 freqs
[NL80211_FREQUENCY_ATTR_MAX_TX_POWER
])
1955 *dbm_max
= (int)(0.01 * nla_get_u32(
1956 freqs
[NL80211_FREQUENCY_ATTR_MAX_TX_POWER
]));
1966 static int nl80211_get_txpwrlist(const char *ifname
, char *buf
, int *len
)
1969 int dbm_max
= -1, dbm_cur
, dbm_cnt
;
1970 struct nl80211_msg_conveyor
*req
;
1971 struct iwinfo_txpwrlist_entry entry
;
1973 if (nl80211_get_channel(ifname
, &ch_cur
))
1976 /* initialize the value pointer with channel for callback */
1979 err
= nl80211_request(ifname
, NL80211_CMD_GET_WIPHY
, 0,
1980 nl80211_get_txpwrlist_cb
, &dbm_max
);
1984 for (dbm_cur
= 0, dbm_cnt
= 0;
1986 dbm_cur
++, dbm_cnt
++)
1988 entry
.dbm
= dbm_cur
;
1989 entry
.mw
= iwinfo_dbm2mw(dbm_cur
);
1991 memcpy(&buf
[dbm_cnt
* sizeof(entry
)], &entry
, sizeof(entry
));
1994 entry
.dbm
= dbm_max
;
1995 entry
.mw
= iwinfo_dbm2mw(dbm_max
);
1997 memcpy(&buf
[dbm_cnt
* sizeof(entry
)], &entry
, sizeof(entry
));
2000 *len
= dbm_cnt
* sizeof(entry
);
2007 static void nl80211_get_scancrypto(const char *spec
,
2008 struct iwinfo_crypto_entry
*c
)
2010 if (strstr(spec
, "WPA") || strstr(spec
, "WEP"))
2014 if (strstr(spec
, "WPA2-") && strstr(spec
, "WPA-"))
2017 else if (strstr(spec
, "WPA2"))
2020 else if (strstr(spec
, "WPA"))
2023 else if (strstr(spec
, "WEP"))
2024 c
->auth_algs
= IWINFO_AUTH_OPEN
| IWINFO_AUTH_SHARED
;
2027 if (strstr(spec
, "PSK"))
2028 c
->auth_suites
|= IWINFO_KMGMT_PSK
;
2030 if (strstr(spec
, "802.1X") || strstr(spec
, "EAP"))
2031 c
->auth_suites
|= IWINFO_KMGMT_8021x
;
2033 if (strstr(spec
, "WPA-NONE"))
2034 c
->auth_suites
|= IWINFO_KMGMT_NONE
;
2037 if (strstr(spec
, "TKIP"))
2038 c
->pair_ciphers
|= IWINFO_CIPHER_TKIP
;
2040 if (strstr(spec
, "CCMP"))
2041 c
->pair_ciphers
|= IWINFO_CIPHER_CCMP
;
2043 if (strstr(spec
, "WEP-40"))
2044 c
->pair_ciphers
|= IWINFO_CIPHER_WEP40
;
2046 if (strstr(spec
, "WEP-104"))
2047 c
->pair_ciphers
|= IWINFO_CIPHER_WEP104
;
2049 c
->group_ciphers
= c
->pair_ciphers
;
2058 struct nl80211_scanlist
{
2059 struct iwinfo_scanlist_entry
*e
;
2064 static void nl80211_get_scanlist_ie(struct nlattr
**bss
,
2065 struct iwinfo_scanlist_entry
*e
)
2067 int ielen
= nla_len(bss
[NL80211_BSS_INFORMATION_ELEMENTS
]);
2068 unsigned char *ie
= nla_data(bss
[NL80211_BSS_INFORMATION_ELEMENTS
]);
2069 static unsigned char ms_oui
[3] = { 0x00, 0x50, 0xf2 };
2072 while (ielen
>= 2 && ielen
>= ie
[1])
2077 len
= min(ie
[1], IWINFO_ESSID_MAX_SIZE
);
2078 memcpy(e
->ssid
, ie
+ 2, len
);
2083 iwinfo_parse_rsn(&e
->crypto
, ie
+ 2, ie
[1],
2084 IWINFO_CIPHER_CCMP
, IWINFO_KMGMT_8021x
);
2087 case 221: /* Vendor */
2088 if (ie
[1] >= 4 && !memcmp(ie
+ 2, ms_oui
, 3) && ie
[5] == 1)
2089 iwinfo_parse_rsn(&e
->crypto
, ie
+ 6, ie
[1] - 4,
2090 IWINFO_CIPHER_TKIP
, IWINFO_KMGMT_PSK
);
2099 static int nl80211_get_scanlist_cb(struct nl_msg
*msg
, void *arg
)
2104 struct nl80211_scanlist
*sl
= arg
;
2105 struct nlattr
**tb
= nl80211_parse(msg
);
2106 struct nlattr
*bss
[NL80211_BSS_MAX
+ 1];
2108 static struct nla_policy bss_policy
[NL80211_BSS_MAX
+ 1] = {
2109 [NL80211_BSS_TSF
] = { .type
= NLA_U64
},
2110 [NL80211_BSS_FREQUENCY
] = { .type
= NLA_U32
},
2111 [NL80211_BSS_BSSID
] = { 0 },
2112 [NL80211_BSS_BEACON_INTERVAL
] = { .type
= NLA_U16
},
2113 [NL80211_BSS_CAPABILITY
] = { .type
= NLA_U16
},
2114 [NL80211_BSS_INFORMATION_ELEMENTS
] = { 0 },
2115 [NL80211_BSS_SIGNAL_MBM
] = { .type
= NLA_U32
},
2116 [NL80211_BSS_SIGNAL_UNSPEC
] = { .type
= NLA_U8
},
2117 [NL80211_BSS_STATUS
] = { .type
= NLA_U32
},
2118 [NL80211_BSS_SEEN_MS_AGO
] = { .type
= NLA_U32
},
2119 [NL80211_BSS_BEACON_IES
] = { 0 },
2122 if (!tb
[NL80211_ATTR_BSS
] ||
2123 nla_parse_nested(bss
, NL80211_BSS_MAX
, tb
[NL80211_ATTR_BSS
],
2125 !bss
[NL80211_BSS_BSSID
])
2130 if (bss
[NL80211_BSS_CAPABILITY
])
2131 caps
= nla_get_u16(bss
[NL80211_BSS_CAPABILITY
]);
2135 memset(sl
->e
, 0, sizeof(*sl
->e
));
2136 memcpy(sl
->e
->mac
, nla_data(bss
[NL80211_BSS_BSSID
]), 6);
2139 sl
->e
->mode
= IWINFO_OPMODE_ADHOC
;
2140 else if (caps
& (1<<0))
2141 sl
->e
->mode
= IWINFO_OPMODE_MASTER
;
2143 sl
->e
->mode
= IWINFO_OPMODE_MESHPOINT
;
2146 sl
->e
->crypto
.enabled
= 1;
2148 if (bss
[NL80211_BSS_FREQUENCY
])
2149 sl
->e
->channel
= nl80211_freq2channel(nla_get_u32(
2150 bss
[NL80211_BSS_FREQUENCY
]));
2152 if (bss
[NL80211_BSS_INFORMATION_ELEMENTS
])
2153 nl80211_get_scanlist_ie(bss
, sl
->e
);
2155 if (bss
[NL80211_BSS_SIGNAL_MBM
])
2158 (uint8_t)((int32_t)nla_get_u32(bss
[NL80211_BSS_SIGNAL_MBM
]) / 100);
2160 rssi
= sl
->e
->signal
- 0x100;
2164 else if (rssi
> -40)
2167 sl
->e
->quality
= (rssi
+ 110);
2168 sl
->e
->quality_max
= 70;
2171 if (sl
->e
->crypto
.enabled
&& !sl
->e
->crypto
.wpa_version
)
2173 sl
->e
->crypto
.auth_algs
= IWINFO_AUTH_OPEN
| IWINFO_AUTH_SHARED
;
2174 sl
->e
->crypto
.pair_ciphers
= IWINFO_CIPHER_WEP40
| IWINFO_CIPHER_WEP104
;
2183 static int nl80211_get_scanlist_nl(const char *ifname
, char *buf
, int *len
)
2185 struct nl80211_scanlist sl
= { .e
= (struct iwinfo_scanlist_entry
*)buf
};
2187 if (nl80211_request(ifname
, NL80211_CMD_TRIGGER_SCAN
, 0, NULL
, NULL
))
2190 if (nl80211_wait("nl80211", "scan",
2191 NL80211_CMD_NEW_SCAN_RESULTS
, NL80211_CMD_SCAN_ABORTED
))
2194 if (nl80211_request(ifname
, NL80211_CMD_GET_SCAN
, NLM_F_DUMP
,
2195 nl80211_get_scanlist_cb
, &sl
))
2198 *len
= sl
.len
* sizeof(struct iwinfo_scanlist_entry
);
2206 static int wpasupp_ssid_decode(const char *in
, char *out
, int outlen
)
2209 (((x) >= 'a') ? ((x) - 'a' + 10) : \
2210 (((x) >= 'A') ? ((x) - 'A' + 10) : ((x) - '0')))
2216 if (len
+ 1 >= outlen
)
2226 out
[len
++] = '\n'; in
++;
2230 out
[len
++] = '\r'; in
++;
2234 out
[len
++] = '\t'; in
++;
2238 out
[len
++] = '\033'; in
++;
2242 if (isxdigit(*(in
+1)) && isxdigit(*(in
+2)))
2243 out
[len
++] = hex(*(in
+1)) * 16 + hex(*(in
+2));
2265 static int nl80211_get_scanlist_wpactl(const char *ifname
, char *buf
, int *len
)
2267 int sock
, qmax
, rssi
, tries
, count
= -1, ready
= 0;
2268 char *pos
, *line
, *bssid
, *freq
, *signal
, *flags
, *ssid
, reply
[4096];
2269 struct sockaddr_un local
= { 0 };
2270 struct iwinfo_scanlist_entry
*e
= (struct iwinfo_scanlist_entry
*)buf
;
2272 sock
= nl80211_wpactl_connect(ifname
, &local
);
2277 send(sock
, "ATTACH", 6, 0);
2278 send(sock
, "SCAN", 4, 0);
2281 * wait for scan results:
2282 * nl80211_wpactl_recv() will use a timeout of 256ms and we need to scan
2283 * 72 channels at most. We'll also receive two "OK" messages acknowledging
2284 * the "ATTACH" and "SCAN" commands and the driver might need a bit extra
2285 * time to process the results, so try 72 + 2 + 1 times.
2287 for (tries
= 0; tries
< 75; tries
++)
2289 if (nl80211_wpactl_recv(sock
, reply
, sizeof(reply
)) <= 0)
2292 /* got an event notification */
2293 if (reply
[0] == '<')
2295 /* scan results are ready */
2296 if (strstr(reply
, "CTRL-EVENT-SCAN-RESULTS"))
2298 /* send "SCAN_RESULTS" command */
2299 ready
= (send(sock
, "SCAN_RESULTS", 12, 0) == 12);
2303 /* is another unrelated event, retry */
2307 /* got a failure reply */
2308 else if (!strcmp(reply
, "FAIL-BUSY\n"))
2314 /* receive and parse scan results if the wait above didn't time out */
2315 while (ready
&& nl80211_wpactl_recv(sock
, reply
, sizeof(reply
)) > 0)
2317 /* received an event notification, receive again */
2318 if (reply
[0] == '<')
2321 nl80211_get_quality_max(ifname
, &qmax
);
2323 for (line
= strtok_r(reply
, "\n", &pos
);
2325 line
= strtok_r(NULL
, "\n", &pos
))
2327 /* skip header line */
2334 bssid
= strtok(line
, "\t");
2335 freq
= strtok(NULL
, "\t");
2336 signal
= strtok(NULL
, "\t");
2337 flags
= strtok(NULL
, "\t");
2338 ssid
= strtok(NULL
, "\n");
2340 if (!bssid
|| !freq
|| !signal
|| !flags
|| !ssid
)
2344 e
->mac
[0] = strtol(&bssid
[0], NULL
, 16);
2345 e
->mac
[1] = strtol(&bssid
[3], NULL
, 16);
2346 e
->mac
[2] = strtol(&bssid
[6], NULL
, 16);
2347 e
->mac
[3] = strtol(&bssid
[9], NULL
, 16);
2348 e
->mac
[4] = strtol(&bssid
[12], NULL
, 16);
2349 e
->mac
[5] = strtol(&bssid
[15], NULL
, 16);
2352 wpasupp_ssid_decode(ssid
, e
->ssid
, sizeof(e
->ssid
));
2355 if (strstr(flags
, "[MESH]"))
2356 e
->mode
= IWINFO_OPMODE_MESHPOINT
;
2357 else if (strstr(flags
, "[IBSS]"))
2358 e
->mode
= IWINFO_OPMODE_ADHOC
;
2360 e
->mode
= IWINFO_OPMODE_MASTER
;
2363 e
->channel
= nl80211_freq2channel(atoi(freq
));
2366 rssi
= atoi(signal
);
2372 /* The cfg80211 wext compat layer assumes a signal range
2373 * of -110 dBm to -40 dBm, the quality value is derived
2374 * by adding 110 to the signal level */
2377 else if (rssi
> -40)
2380 e
->quality
= (rssi
+ 110);
2388 e
->quality_max
= qmax
;
2391 nl80211_get_scancrypto(flags
, &e
->crypto
);
2397 *len
= count
* sizeof(struct iwinfo_scanlist_entry
);
2402 unlink(local
.sun_path
);
2404 return (count
>= 0) ? 0 : -1;
2407 static int nl80211_get_scanlist(const char *ifname
, char *buf
, int *len
)
2414 /* Got a radioX pseudo interface, find some interface on it or create one */
2415 if (!strncmp(ifname
, "radio", 5))
2417 /* Reuse existing interface */
2418 if ((res
= nl80211_phy2ifname(ifname
)) != NULL
)
2420 return nl80211_get_scanlist(res
, buf
, len
);
2423 /* Need to spawn a temporary iface for scanning */
2424 else if ((res
= nl80211_ifadd(ifname
)) != NULL
)
2426 rv
= nl80211_get_scanlist(res
, buf
, len
);
2432 /* WPA supplicant */
2433 if (!nl80211_get_scanlist_wpactl(ifname
, buf
, len
))
2438 /* station / ad-hoc / monitor scan */
2439 else if (!nl80211_get_mode(ifname
, &mode
) &&
2440 (mode
== IWINFO_OPMODE_ADHOC
||
2441 mode
== IWINFO_OPMODE_MASTER
||
2442 mode
== IWINFO_OPMODE_CLIENT
||
2443 mode
== IWINFO_OPMODE_MONITOR
) &&
2444 iwinfo_ifup(ifname
))
2446 return nl80211_get_scanlist_nl(ifname
, buf
, len
);
2452 /* Got a temp interface, don't create yet another one */
2453 if (!strncmp(ifname
, "tmp.", 4))
2455 if (!iwinfo_ifup(ifname
))
2458 rv
= nl80211_get_scanlist_nl(ifname
, buf
, len
);
2459 iwinfo_ifdown(ifname
);
2463 /* Spawn a new scan interface */
2466 if (!(res
= nl80211_ifadd(ifname
)))
2471 /* if we can take the new interface up, the driver supports an
2472 * additional interface and there's no need to tear down the ap */
2473 if (iwinfo_ifup(res
))
2475 rv
= nl80211_get_scanlist_nl(res
, buf
, len
);
2479 /* driver cannot create secondary interface, take down ap
2481 else if (iwinfo_ifdown(ifname
) && iwinfo_ifup(res
))
2483 rv
= nl80211_get_scanlist_nl(res
, buf
, len
);
2485 iwinfo_ifup(ifname
);
2486 nl80211_hostapd_hup(ifname
);
2497 static int nl80211_get_freqlist_cb(struct nl_msg
*msg
, void *arg
)
2499 int bands_remain
, freqs_remain
;
2501 struct nl80211_array_buf
*arr
= arg
;
2502 struct iwinfo_freqlist_entry
*e
;
2504 struct nlattr
**attr
= nl80211_parse(msg
);
2505 struct nlattr
*bands
[NL80211_BAND_ATTR_MAX
+ 1];
2506 struct nlattr
*freqs
[NL80211_FREQUENCY_ATTR_MAX
+ 1];
2507 struct nlattr
*band
, *freq
;
2512 if (attr
[NL80211_ATTR_WIPHY_BANDS
]) {
2513 nla_for_each_nested(band
, attr
[NL80211_ATTR_WIPHY_BANDS
], bands_remain
)
2515 nla_parse(bands
, NL80211_BAND_ATTR_MAX
,
2516 nla_data(band
), nla_len(band
), NULL
);
2518 if (bands
[NL80211_BAND_ATTR_FREQS
]) {
2519 nla_for_each_nested(freq
, bands
[NL80211_BAND_ATTR_FREQS
], freqs_remain
)
2521 nla_parse(freqs
, NL80211_FREQUENCY_ATTR_MAX
,
2522 nla_data(freq
), nla_len(freq
), NULL
);
2524 if (!freqs
[NL80211_FREQUENCY_ATTR_FREQ
] ||
2525 freqs
[NL80211_FREQUENCY_ATTR_DISABLED
])
2528 e
->mhz
= nla_get_u32(freqs
[NL80211_FREQUENCY_ATTR_FREQ
]);
2529 e
->channel
= nl80211_freq2channel(e
->mhz
);
2532 freqs
[NL80211_FREQUENCY_ATTR_NO_IR
] &&
2533 !freqs
[NL80211_FREQUENCY_ATTR_RADAR
]
2536 if (freqs
[NL80211_FREQUENCY_ATTR_NO_HT40_MINUS
])
2537 e
->flags
|= IWINFO_FREQ_NO_HT40MINUS
;
2538 if (freqs
[NL80211_FREQUENCY_ATTR_NO_HT40_PLUS
])
2539 e
->flags
|= IWINFO_FREQ_NO_HT40PLUS
;
2540 if (freqs
[NL80211_FREQUENCY_ATTR_NO_80MHZ
])
2541 e
->flags
|= IWINFO_FREQ_NO_80MHZ
;
2542 if (freqs
[NL80211_FREQUENCY_ATTR_NO_160MHZ
])
2543 e
->flags
|= IWINFO_FREQ_NO_160MHZ
;
2544 if (freqs
[NL80211_FREQUENCY_ATTR_NO_20MHZ
])
2545 e
->flags
|= IWINFO_FREQ_NO_20MHZ
;
2546 if (freqs
[NL80211_FREQUENCY_ATTR_NO_10MHZ
])
2547 e
->flags
|= IWINFO_FREQ_NO_10MHZ
;
2559 static int nl80211_get_freqlist(const char *ifname
, char *buf
, int *len
)
2561 struct nl80211_msg_conveyor
*cv
;
2562 struct nl80211_array_buf arr
= { .buf
= buf
, .count
= 0 };
2563 uint32_t features
= nl80211_get_protocol_features(ifname
);
2566 flags
= features
& NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP
? NLM_F_DUMP
: 0;
2567 cv
= nl80211_msg(ifname
, NL80211_CMD_GET_WIPHY
, flags
);
2571 NLA_PUT_FLAG(cv
->msg
, NL80211_ATTR_SPLIT_WIPHY_DUMP
);
2572 if (nl80211_send(cv
, nl80211_get_freqlist_cb
, &arr
))
2575 *len
= arr
.count
* sizeof(struct iwinfo_freqlist_entry
);
2585 static int nl80211_get_country_cb(struct nl_msg
*msg
, void *arg
)
2588 struct nlattr
**attr
= nl80211_parse(msg
);
2590 if (attr
[NL80211_ATTR_REG_ALPHA2
])
2591 memcpy(buf
, nla_data(attr
[NL80211_ATTR_REG_ALPHA2
]), 2);
2598 static int nl80211_get_country(const char *ifname
, char *buf
)
2600 if (nl80211_request(ifname
, NL80211_CMD_GET_REG
, 0,
2601 nl80211_get_country_cb
, buf
))
2607 static int nl80211_get_countrylist(const char *ifname
, char *buf
, int *len
)
2610 struct iwinfo_country_entry
*e
= (struct iwinfo_country_entry
*)buf
;
2611 const struct iwinfo_iso3166_label
*l
;
2613 for (l
= IWINFO_ISO3166_NAMES
, count
= 0; l
->iso3166
; l
++, e
++, count
++)
2615 e
->iso3166
= l
->iso3166
;
2616 e
->ccode
[0] = (l
->iso3166
/ 256);
2617 e
->ccode
[1] = (l
->iso3166
% 256);
2621 *len
= (count
* sizeof(struct iwinfo_country_entry
));
2626 struct nl80211_modes
2633 static int nl80211_get_modelist_cb(struct nl_msg
*msg
, void *arg
)
2635 struct nl80211_modes
*m
= arg
;
2636 int bands_remain
, freqs_remain
;
2638 uint32_t vht_caps
= 0;
2639 struct nlattr
**attr
= nl80211_parse(msg
);
2640 struct nlattr
*bands
[NL80211_BAND_ATTR_MAX
+ 1];
2641 struct nlattr
*freqs
[NL80211_FREQUENCY_ATTR_MAX
+ 1];
2642 struct nlattr
*band
, *freq
;
2644 if (attr
[NL80211_ATTR_WIPHY_BANDS
])
2646 nla_for_each_nested(band
, attr
[NL80211_ATTR_WIPHY_BANDS
], bands_remain
)
2648 nla_parse(bands
, NL80211_BAND_ATTR_MAX
,
2649 nla_data(band
), nla_len(band
), NULL
);
2651 if (bands
[NL80211_BAND_ATTR_HT_CAPA
])
2652 caps
= nla_get_u16(bands
[NL80211_BAND_ATTR_HT_CAPA
]);
2654 /* Treat any nonzero capability as 11n */
2657 m
->hw
|= IWINFO_80211_N
;
2658 m
->ht
|= IWINFO_HTMODE_HT20
;
2660 if (caps
& (1 << 1))
2661 m
->ht
|= IWINFO_HTMODE_HT40
;
2664 nla_for_each_nested(freq
, bands
[NL80211_BAND_ATTR_FREQS
],
2667 nla_parse(freqs
, NL80211_FREQUENCY_ATTR_MAX
,
2668 nla_data(freq
), nla_len(freq
), NULL
);
2670 if (!freqs
[NL80211_FREQUENCY_ATTR_FREQ
])
2673 if (nla_get_u32(freqs
[NL80211_FREQUENCY_ATTR_FREQ
]) < 2485)
2675 m
->hw
|= IWINFO_80211_B
;
2676 m
->hw
|= IWINFO_80211_G
;
2678 else if (bands
[NL80211_BAND_ATTR_VHT_CAPA
])
2680 vht_caps
= nla_get_u32(bands
[NL80211_BAND_ATTR_VHT_CAPA
]);
2682 /* Treat any nonzero capability as 11ac */
2685 m
->hw
|= IWINFO_80211_AC
;
2686 m
->ht
|= IWINFO_HTMODE_VHT20
| IWINFO_HTMODE_VHT40
| IWINFO_HTMODE_VHT80
;
2688 switch ((vht_caps
>> 2) & 3)
2691 m
->ht
|= IWINFO_HTMODE_VHT80_80
;
2695 m
->ht
|= IWINFO_HTMODE_VHT160
;
2699 else if (!(m
->hw
& IWINFO_80211_AC
))
2701 m
->hw
|= IWINFO_80211_A
;
2712 static int nl80211_get_hwmodelist(const char *ifname
, int *buf
)
2714 struct nl80211_modes m
= { 0 };
2716 if (nl80211_request(ifname
, NL80211_CMD_GET_WIPHY
, 0,
2717 nl80211_get_modelist_cb
, &m
))
2731 static int nl80211_get_htmodelist(const char *ifname
, int *buf
)
2733 struct nl80211_modes m
= { 0 };
2735 if (nl80211_request(ifname
, NL80211_CMD_GET_WIPHY
, 0,
2736 nl80211_get_modelist_cb
, &m
))
2751 static int nl80211_get_ifcomb_cb(struct nl_msg
*msg
, void *arg
)
2753 struct nlattr
**attr
= nl80211_parse(msg
);
2754 struct nlattr
*comb
;
2756 int comb_rem
, limit_rem
, mode_rem
;
2759 if (!attr
[NL80211_ATTR_INTERFACE_COMBINATIONS
])
2762 nla_for_each_nested(comb
, attr
[NL80211_ATTR_INTERFACE_COMBINATIONS
], comb_rem
)
2764 static struct nla_policy iface_combination_policy
[NUM_NL80211_IFACE_COMB
] = {
2765 [NL80211_IFACE_COMB_LIMITS
] = { .type
= NLA_NESTED
},
2766 [NL80211_IFACE_COMB_MAXNUM
] = { .type
= NLA_U32
},
2768 struct nlattr
*tb_comb
[NUM_NL80211_IFACE_COMB
+1];
2769 static struct nla_policy iface_limit_policy
[NUM_NL80211_IFACE_LIMIT
] = {
2770 [NL80211_IFACE_LIMIT_TYPES
] = { .type
= NLA_NESTED
},
2771 [NL80211_IFACE_LIMIT_MAX
] = { .type
= NLA_U32
},
2773 struct nlattr
*tb_limit
[NUM_NL80211_IFACE_LIMIT
+1];
2774 struct nlattr
*limit
;
2776 nla_parse_nested(tb_comb
, NUM_NL80211_IFACE_COMB
, comb
, iface_combination_policy
);
2778 if (!tb_comb
[NL80211_IFACE_COMB_LIMITS
])
2781 nla_for_each_nested(limit
, tb_comb
[NL80211_IFACE_COMB_LIMITS
], limit_rem
)
2783 struct nlattr
*mode
;
2785 nla_parse_nested(tb_limit
, NUM_NL80211_IFACE_LIMIT
, limit
, iface_limit_policy
);
2787 if (!tb_limit
[NL80211_IFACE_LIMIT_TYPES
] ||
2788 !tb_limit
[NL80211_IFACE_LIMIT_MAX
])
2791 if (nla_get_u32(tb_limit
[NL80211_IFACE_LIMIT_MAX
]) < 2)
2794 nla_for_each_nested(mode
, tb_limit
[NL80211_IFACE_LIMIT_TYPES
], mode_rem
) {
2795 if (nla_type(mode
) == NL80211_IFTYPE_AP
)
2804 static int nl80211_get_mbssid_support(const char *ifname
, int *buf
)
2806 if (nl80211_request(ifname
, NL80211_CMD_GET_WIPHY
, 0,
2807 nl80211_get_ifcomb_cb
, buf
))
2813 static int nl80211_get_hardware_id(const char *ifname
, char *buf
)
2818 /* Got a radioX pseudo interface, find some interface on it or create one */
2819 if (!strncmp(ifname
, "radio", 5))
2821 /* Reuse existing interface */
2822 if ((res
= nl80211_phy2ifname(ifname
)) != NULL
)
2824 rv
= wext_ops
.hardware_id(res
, buf
);
2827 /* Need to spawn a temporary iface for finding IDs */
2828 else if ((res
= nl80211_ifadd(ifname
)) != NULL
)
2830 rv
= wext_ops
.hardware_id(res
, buf
);
2836 rv
= wext_ops
.hardware_id(ifname
, buf
);
2839 /* Failed to obtain hardware IDs, search board config */
2842 rv
= iwinfo_hardware_id_from_mtd((struct iwinfo_hardware_id
*)buf
);
2848 static const struct iwinfo_hardware_entry
*
2849 nl80211_get_hardware_entry(const char *ifname
)
2851 struct iwinfo_hardware_id id
;
2853 if (nl80211_get_hardware_id(ifname
, (char *)&id
))
2856 return iwinfo_hardware(&id
);
2859 static int nl80211_get_hardware_name(const char *ifname
, char *buf
)
2861 const struct iwinfo_hardware_entry
*hw
;
2863 if (!(hw
= nl80211_get_hardware_entry(ifname
)))
2864 sprintf(buf
, "Generic MAC80211");
2866 sprintf(buf
, "%s %s", hw
->vendor_name
, hw
->device_name
);
2871 static int nl80211_get_txpower_offset(const char *ifname
, int *buf
)
2873 const struct iwinfo_hardware_entry
*hw
;
2875 if (!(hw
= nl80211_get_hardware_entry(ifname
)))
2878 *buf
= hw
->txpower_offset
;
2882 static int nl80211_get_frequency_offset(const char *ifname
, int *buf
)
2884 const struct iwinfo_hardware_entry
*hw
;
2886 if (!(hw
= nl80211_get_hardware_entry(ifname
)))
2889 *buf
= hw
->frequency_offset
;
2893 static int nl80211_lookup_phyname(const char *section
, char *buf
)
2897 if ((idx
= nl80211_phy_idx_from_uci(section
)) < 0)
2900 sprintf(buf
, "phy%d", idx
);
2904 const struct iwinfo_ops nl80211_ops
= {
2906 .probe
= nl80211_probe
,
2907 .channel
= nl80211_get_channel
,
2908 .frequency
= nl80211_get_frequency
,
2909 .frequency_offset
= nl80211_get_frequency_offset
,
2910 .txpower
= nl80211_get_txpower
,
2911 .txpower_offset
= nl80211_get_txpower_offset
,
2912 .bitrate
= nl80211_get_bitrate
,
2913 .signal
= nl80211_get_signal
,
2914 .noise
= nl80211_get_noise
,
2915 .quality
= nl80211_get_quality
,
2916 .quality_max
= nl80211_get_quality_max
,
2917 .mbssid_support
= nl80211_get_mbssid_support
,
2918 .hwmodelist
= nl80211_get_hwmodelist
,
2919 .htmodelist
= nl80211_get_htmodelist
,
2920 .mode
= nl80211_get_mode
,
2921 .ssid
= nl80211_get_ssid
,
2922 .bssid
= nl80211_get_bssid
,
2923 .country
= nl80211_get_country
,
2924 .hardware_id
= nl80211_get_hardware_id
,
2925 .hardware_name
= nl80211_get_hardware_name
,
2926 .encryption
= nl80211_get_encryption
,
2927 .phyname
= nl80211_get_phyname
,
2928 .assoclist
= nl80211_get_assoclist
,
2929 .txpwrlist
= nl80211_get_txpwrlist
,
2930 .scanlist
= nl80211_get_scanlist
,
2931 .freqlist
= nl80211_get_freqlist
,
2932 .countrylist
= nl80211_get_countrylist
,
2933 .survey
= nl80211_get_survey
,
2934 .lookup_phy
= nl80211_lookup_phyname
,
2935 .close
= nl80211_close