2 * iwinfo - Wireless Information Library - NL80211 Backend
4 * Copyright (C) 2010 Jo-Philipp Wich <xm@subsignal.org>
6 * The iwinfo library is free software: you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License version 2
8 * as published by the Free Software Foundation.
10 * The iwinfo library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
13 * See the GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License along
16 * with the iwinfo library. If not, see http://www.gnu.org/licenses/.
18 * The signal handling code is derived from the official madwifi tools,
19 * wlanconfig.c in particular. The encryption property handling was
20 * inspired by the hostapd madwifi driver.
22 * Parts of this code are derived from the Linux iw utility.
25 #include "iwinfo_nl80211.h"
26 #include "iwinfo_wext.h"
28 #define min(x, y) ((x) < (y)) ? (x) : (y)
30 extern struct iwinfo_iso3166_label ISO3166_Names
[];
31 static struct nl80211_state
*nls
= NULL
;
33 static int nl80211_init(void)
39 nls
= malloc(sizeof(struct nl80211_state
));
45 nls
->nl_sock
= nl_socket_alloc();
51 if( genl_connect(nls
->nl_sock
)) {
56 fd
= nl_socket_get_fd(nls
->nl_sock
);
57 if( fcntl(fd
, F_SETFD
, fcntl(fd
, F_GETFD
) | FD_CLOEXEC
) < 0 )
63 if( genl_ctrl_alloc_cache(nls
->nl_sock
, &nls
->nl_cache
)) {
68 nls
->nl80211
= genl_ctrl_search_by_name(nls
->nl_cache
, "nl80211");
84 static int nl80211_msg_error(struct sockaddr_nl
*nla
,
85 struct nlmsgerr
*err
, void *arg
)
92 static int nl80211_msg_finish(struct nl_msg
*msg
, void *arg
)
99 static int nl80211_msg_ack(struct nl_msg
*msg
, void *arg
)
106 static int nl80211_msg_response(struct nl_msg
*msg
, void *arg
)
108 struct nl80211_msg_conveyor
*cv
= arg
;
113 cv
->hdr
= nlmsg_data(nlmsg_hdr(cv
->msg
));
115 nla_parse(cv
->attr
, NL80211_ATTR_MAX
,
116 genlmsg_attrdata(cv
->hdr
, 0),
117 genlmsg_attrlen(cv
->hdr
, 0), NULL
);
122 static void nl80211_free(struct nl80211_msg_conveyor
*cv
)
137 static struct nl80211_msg_conveyor
* nl80211_msg(const char *ifname
, int cmd
, int flags
)
139 static struct nl80211_msg_conveyor cv
;
141 int ifidx
= -1, phyidx
= -1;
142 struct nl_msg
*req
= NULL
;
143 struct nl_cb
*cb
= NULL
;
145 if( nl80211_init() < 0 )
148 if( !strncmp(ifname
, "phy", 3) )
149 phyidx
= atoi(&ifname
[3]);
150 else if( !strncmp(ifname
, "radio", 5) )
151 phyidx
= atoi(&ifname
[5]);
152 else if( !strncmp(ifname
, "mon.", 4) )
153 ifidx
= if_nametoindex(&ifname
[4]);
155 ifidx
= if_nametoindex(ifname
);
157 if( (ifidx
< 0) && (phyidx
< 0) )
164 cb
= nl_cb_alloc(NL_CB_DEFAULT
);
168 genlmsg_put(req
, 0, 0, genl_family_get_id(nls
->nl80211
), 0,
172 NLA_PUT_U32(req
, NL80211_ATTR_IFINDEX
, ifidx
);
175 NLA_PUT_U32(req
, NL80211_ATTR_WIPHY
, phyidx
);
196 static void nl80211_cb(struct nl80211_msg_conveyor
*cv
,
197 int (*cb
)(struct nl_msg
*, void *), void *arg
)
200 nl_cb_set(cv
->cb
, NL_CB_VALID
, NL_CB_CUSTOM
, cb
, arg
);
203 static struct nl80211_msg_conveyor
* nl80211_send(struct nl80211_msg_conveyor
*cv
)
205 static struct nl80211_msg_conveyor rcv
;
209 nl_cb_set(cv
->cb
, NL_CB_VALID
, NL_CB_CUSTOM
, nl80211_msg_response
, &rcv
);
211 if( nl_send_auto_complete(nls
->nl_sock
, cv
->msg
) < 0 )
214 nl_cb_err(cv
->cb
, NL_CB_CUSTOM
, nl80211_msg_error
, &err
);
215 nl_cb_set(cv
->cb
, NL_CB_FINISH
, NL_CB_CUSTOM
, nl80211_msg_finish
, &err
);
216 nl_cb_set(cv
->cb
, NL_CB_ACK
, NL_CB_CUSTOM
, nl80211_msg_ack
, &err
);
219 nl_recvmsgs(nls
->nl_sock
, cv
->cb
);
230 static int nl80211_freq2channel(int freq
)
236 return (freq
- 2407) / 5;
238 return (freq
/ 5) - 1000;
241 static char * nl80211_getval(const char *ifname
, const char *buf
, const char *key
)
244 char lkey
[64] = { 0 };
245 const char *ln
= buf
;
246 static char lval
[256] = { 0 };
248 int matched_if
= ifname
? 0 : 1;
251 for( i
= 0, len
= strlen(buf
); i
< len
; i
++ )
253 if( !lkey
[0] && (buf
[i
] == ' ' || buf
[i
] == '\t') )
257 else if( !lkey
[0] && (buf
[i
] == '=') )
259 if( (&buf
[i
] - ln
) > 0 )
260 memcpy(lkey
, ln
, min(sizeof(lkey
) - 1, &buf
[i
] - ln
));
262 else if( buf
[i
] == '\n' )
266 memcpy(lval
, ln
+ strlen(lkey
) + 1,
267 min(sizeof(lval
) - 1, &buf
[i
] - ln
- strlen(lkey
) - 1));
269 if( (ifname
!= NULL
) &&
270 (!strcmp(lkey
, "interface") || !strcmp(lkey
, "bss")) )
272 matched_if
= !strcmp(lval
, ifname
);
274 else if( matched_if
&& !strcmp(lkey
, key
) )
281 memset(lkey
, 0, sizeof(lkey
));
282 memset(lval
, 0, sizeof(lval
));
289 static char * nl80211_ifname2phy(const char *ifname
)
291 static char phy
[32] = { 0 };
292 struct nl80211_msg_conveyor
*req
, *res
;
294 req
= nl80211_msg(ifname
, NL80211_CMD_GET_WIPHY
, 0);
297 res
= nl80211_send(req
);
300 if( res
->attr
[NL80211_ATTR_WIPHY_NAME
] )
302 snprintf(phy
, sizeof(phy
), "%s",
303 nla_get_string(res
->attr
[NL80211_ATTR_WIPHY_NAME
]));
310 return phy
[0] ? phy
: NULL
;
313 static char * nl80211_hostapd_info(const char *ifname
)
316 char path
[32] = { 0 };
317 static char buf
[4096] = { 0 };
320 if( (phy
= nl80211_ifname2phy(ifname
)) != NULL
)
322 snprintf(path
, sizeof(path
), "/var/run/hostapd-%s.conf", phy
);
324 if( (conf
= fopen(path
, "r")) != NULL
)
326 fread(buf
, sizeof(buf
) - 1, 1, conf
);
336 static inline int nl80211_wpactl_recv(int sock
, char *buf
, int blen
)
339 struct timeval tv
= { 2, 0 };
344 memset(buf
, 0, blen
);
347 if( select(sock
+ 1, &rfds
, NULL
, NULL
, &tv
) < 0 )
350 if( !FD_ISSET(sock
, &rfds
) )
353 return recv(sock
, buf
, blen
, 0);
356 static char * nl80211_wpactl_info(const char *ifname
, const char *cmd
,
362 size_t remote_length
, local_length
;
363 static char buffer
[10240] = { 0 };
365 struct sockaddr_un local
= { 0 };
366 struct sockaddr_un remote
= { 0 };
369 sock
= socket(PF_UNIX
, SOCK_DGRAM
, 0);
373 remote
.sun_family
= AF_UNIX
;
374 remote_length
= sizeof(remote
.sun_family
) + sprintf(remote
.sun_path
,
375 "/var/run/wpa_supplicant-%s/%s", ifname
, ifname
);
377 if( fcntl(sock
, F_SETFD
, fcntl(sock
, F_GETFD
) | FD_CLOEXEC
) < 0 )
380 if( connect(sock
, (struct sockaddr
*) &remote
, remote_length
) )
383 local
.sun_family
= AF_UNIX
;
384 local_length
= sizeof(local
.sun_family
) + sprintf(local
.sun_path
,
385 "/var/run/iwinfo-%s-%d", ifname
, getpid());
387 if( bind(sock
, (struct sockaddr
*) &local
, local_length
) )
391 send(sock
, "ATTACH", 6, 0);
393 if( nl80211_wpactl_recv(sock
, buffer
, sizeof(buffer
)) <= 0 )
397 send(sock
, cmd
, strlen(cmd
), 0);
399 while( numtry
++ < 5 )
401 if( nl80211_wpactl_recv(sock
, buffer
, sizeof(buffer
)) <= 0 )
409 if( (!event
&& buffer
[0] != '<') || strstr(buffer
, event
) )
418 if( local
.sun_family
)
419 unlink(local
.sun_path
);
424 static inline int nl80211_readint(const char *path
)
430 if( (fd
= open(path
, O_RDONLY
)) > -1 )
432 if( read(fd
, buffer
, sizeof(buffer
)) > 0 )
441 static char * nl80211_phy2ifname(const char *ifname
)
443 int fd
, ifidx
= -1, cifidx
= -1, phyidx
= -1;
445 static char nif
[IFNAMSIZ
] = { 0 };
452 else if( !strncmp(ifname
, "phy", 3) )
453 phyidx
= atoi(&ifname
[3]);
454 else if( !strncmp(ifname
, "radio", 5) )
455 phyidx
= atoi(&ifname
[5]);
459 if( (d
= opendir("/sys/class/net")) != NULL
)
461 while( (e
= readdir(d
)) != NULL
)
463 snprintf(buffer
, sizeof(buffer
),
464 "/sys/class/net/%s/phy80211/index", e
->d_name
);
466 if( nl80211_readint(buffer
) == phyidx
)
468 snprintf(buffer
, sizeof(buffer
),
469 "/sys/class/net/%s/ifindex", e
->d_name
);
471 if( (cifidx
= nl80211_readint(buffer
)) >= 0 &&
472 ((ifidx
< 0) || (cifidx
< ifidx
)) )
475 strncpy(nif
, e
->d_name
, sizeof(nif
));
484 return nif
[0] ? nif
: NULL
;
487 static char * nl80211_ifadd(const char *ifname
)
491 static char nif
[IFNAMSIZ
] = { 0 };
492 struct nl80211_msg_conveyor
*req
, *res
;
494 req
= nl80211_msg(ifname
, NL80211_CMD_NEW_INTERFACE
, 0);
497 snprintf(nif
, sizeof(nif
), "tmp.%s", ifname
);
499 NLA_PUT_STRING(req
->msg
, NL80211_ATTR_IFNAME
, nif
);
500 NLA_PUT_U32(req
->msg
, NL80211_ATTR_IFTYPE
, NL80211_IFTYPE_STATION
);
502 res
= nl80211_send(req
);
516 static void nl80211_ifdel(const char *ifname
)
518 struct nl80211_msg_conveyor
*req
;
520 req
= nl80211_msg(ifname
, NL80211_CMD_DEL_INTERFACE
, 0);
523 NLA_PUT_STRING(req
->msg
, NL80211_ATTR_IFNAME
, ifname
);
525 nl80211_free(nl80211_send(req
));
532 static void nl80211_hostapd_hup(const char *ifname
)
536 char *phy
= nl80211_ifname2phy(ifname
);
540 snprintf(buf
, sizeof(buf
), "/var/run/wifi-%s.pid", phy
);
541 if( (fd
= open(buf
, O_RDONLY
)) > 0 )
543 if( read(fd
, buf
, sizeof(buf
)) > 0 )
555 int nl80211_probe(const char *ifname
)
557 return !!nl80211_ifname2phy(ifname
);
560 void nl80211_close(void)
565 nl_socket_free(nls
->nl_sock
);
568 nl_cache_free(nls
->nl_cache
);
575 int nl80211_get_mode(const char *ifname
, char *buf
)
577 return wext_get_mode(ifname
, buf
);
580 int nl80211_get_ssid(const char *ifname
, char *buf
)
584 if( !wext_get_ssid(ifname
, buf
) )
588 else if( (ssid
= nl80211_hostapd_info(ifname
)) &&
589 (ssid
= nl80211_getval(ifname
, ssid
, "ssid")) )
591 memcpy(buf
, ssid
, strlen(ssid
));
598 int nl80211_get_bssid(const char *ifname
, char *buf
)
601 unsigned char mac
[6];
603 if( !wext_get_bssid(ifname
, buf
) )
607 else if( (bssid
= nl80211_hostapd_info(ifname
)) &&
608 (bssid
= nl80211_getval(ifname
, bssid
, "bssid")) )
610 mac
[0] = strtol(&bssid
[0], NULL
, 16);
611 mac
[1] = strtol(&bssid
[3], NULL
, 16);
612 mac
[2] = strtol(&bssid
[6], NULL
, 16);
613 mac
[3] = strtol(&bssid
[9], NULL
, 16);
614 mac
[4] = strtol(&bssid
[12], NULL
, 16);
615 mac
[5] = strtol(&bssid
[15], NULL
, 16);
617 sprintf(buf
, "%02X:%02X:%02X:%02X:%02X:%02X",
618 mac
[0], mac
[1], mac
[2], mac
[3], mac
[4], mac
[5]);
626 int nl80211_get_channel(const char *ifname
, int *buf
)
630 if( !wext_get_channel(ifname
, buf
) )
633 else if( (first
= nl80211_phy2ifname(nl80211_ifname2phy(ifname
))) != NULL
)
634 return wext_get_channel(first
, buf
);
639 int nl80211_get_frequency(const char *ifname
, int *buf
)
643 if( !wext_get_frequency(ifname
, buf
) )
646 else if( (first
= nl80211_phy2ifname(nl80211_ifname2phy(ifname
))) != NULL
)
647 return wext_get_frequency(first
, buf
);
652 int nl80211_get_txpower(const char *ifname
, int *buf
)
654 return wext_get_txpower(ifname
, buf
);
658 static int nl80211_fill_signal_cb(struct nl_msg
*msg
, void *arg
)
662 struct nl80211_rssi_rate
*rr
= arg
;
664 struct genlmsghdr
*gnlh
= nlmsg_data(nlmsg_hdr(msg
));
665 struct nlattr
*attr
[NL80211_ATTR_MAX
+ 1];
666 struct nlattr
*sinfo
[NL80211_STA_INFO_MAX
+ 1];
667 struct nlattr
*rinfo
[NL80211_RATE_INFO_MAX
+ 1];
669 static struct nla_policy stats_policy
[NL80211_STA_INFO_MAX
+ 1] = {
670 [NL80211_STA_INFO_INACTIVE_TIME
] = { .type
= NLA_U32
},
671 [NL80211_STA_INFO_RX_BYTES
] = { .type
= NLA_U32
},
672 [NL80211_STA_INFO_TX_BYTES
] = { .type
= NLA_U32
},
673 [NL80211_STA_INFO_RX_PACKETS
] = { .type
= NLA_U32
},
674 [NL80211_STA_INFO_TX_PACKETS
] = { .type
= NLA_U32
},
675 [NL80211_STA_INFO_SIGNAL
] = { .type
= NLA_U8
},
676 [NL80211_STA_INFO_TX_BITRATE
] = { .type
= NLA_NESTED
},
677 [NL80211_STA_INFO_LLID
] = { .type
= NLA_U16
},
678 [NL80211_STA_INFO_PLID
] = { .type
= NLA_U16
},
679 [NL80211_STA_INFO_PLINK_STATE
] = { .type
= NLA_U8
},
682 static struct nla_policy rate_policy
[NL80211_RATE_INFO_MAX
+ 1] = {
683 [NL80211_RATE_INFO_BITRATE
] = { .type
= NLA_U16
},
684 [NL80211_RATE_INFO_MCS
] = { .type
= NLA_U8
},
685 [NL80211_RATE_INFO_40_MHZ_WIDTH
] = { .type
= NLA_FLAG
},
686 [NL80211_RATE_INFO_SHORT_GI
] = { .type
= NLA_FLAG
},
689 nla_parse(attr
, NL80211_ATTR_MAX
, genlmsg_attrdata(gnlh
, 0),
690 genlmsg_attrlen(gnlh
, 0), NULL
);
692 if( attr
[NL80211_ATTR_STA_INFO
] )
694 if( !nla_parse_nested(sinfo
, NL80211_STA_INFO_MAX
,
695 attr
[NL80211_ATTR_STA_INFO
], stats_policy
) )
697 if( sinfo
[NL80211_STA_INFO_SIGNAL
] )
699 dbm
= nla_get_u8(sinfo
[NL80211_STA_INFO_SIGNAL
]);
700 rr
->rssi
= rr
->rssi
? (int8_t)((rr
->rssi
+ dbm
) / 2) : dbm
;
703 if( sinfo
[NL80211_STA_INFO_TX_BITRATE
] )
705 if( !nla_parse_nested(rinfo
, NL80211_RATE_INFO_MAX
,
706 sinfo
[NL80211_STA_INFO_TX_BITRATE
], rate_policy
) )
708 if( rinfo
[NL80211_RATE_INFO_BITRATE
] )
710 mbit
= nla_get_u16(rinfo
[NL80211_RATE_INFO_BITRATE
]);
712 ? (int16_t)((rr
->rate
+ mbit
) / 2) : mbit
;
722 static void nl80211_fill_signal(const char *ifname
, struct nl80211_rssi_rate
*r
)
726 struct nl80211_msg_conveyor
*req
;
731 if ((d
= opendir("/sys/class/net")) != NULL
)
733 while ((de
= readdir(d
)) != NULL
)
735 if (!strncmp(de
->d_name
, ifname
, strlen(ifname
)) &&
736 (!de
->d_name
[strlen(ifname
)] ||
737 !strncmp(&de
->d_name
[strlen(ifname
)], ".sta", 4)))
739 req
= nl80211_msg(de
->d_name
, NL80211_CMD_GET_STATION
,
744 nl80211_cb(req
, nl80211_fill_signal_cb
, r
);
745 nl80211_free(nl80211_send(req
));
755 int nl80211_get_bitrate(const char *ifname
, int *buf
)
757 struct nl80211_rssi_rate rr
;
759 if( !wext_get_bitrate(ifname
, buf
) )
762 nl80211_fill_signal(ifname
, &rr
);
766 *buf
= (rr
.rate
* 100);
773 int nl80211_get_signal(const char *ifname
, int *buf
)
775 struct nl80211_rssi_rate rr
;
777 if( !wext_get_signal(ifname
, buf
) )
780 nl80211_fill_signal(ifname
, &rr
);
791 static int nl80211_get_noise_cb(struct nl_msg
*msg
, void *arg
)
794 struct genlmsghdr
*gnlh
= nlmsg_data(nlmsg_hdr(msg
));
795 struct nlattr
*tb
[NL80211_ATTR_MAX
+ 1];
796 struct nlattr
*si
[NL80211_SURVEY_INFO_MAX
+ 1];
798 static struct nla_policy sp
[NL80211_SURVEY_INFO_MAX
+ 1] = {
799 [NL80211_SURVEY_INFO_FREQUENCY
] = { .type
= NLA_U32
},
800 [NL80211_SURVEY_INFO_NOISE
] = { .type
= NLA_U8
},
803 nla_parse(tb
, NL80211_ATTR_MAX
, genlmsg_attrdata(gnlh
, 0),
804 genlmsg_attrlen(gnlh
, 0), NULL
);
806 if (!tb
[NL80211_ATTR_SURVEY_INFO
])
809 if (nla_parse_nested(si
, NL80211_SURVEY_INFO_MAX
,
810 tb
[NL80211_ATTR_SURVEY_INFO
], sp
))
813 if (!si
[NL80211_SURVEY_INFO_NOISE
])
816 if (!*noise
|| si
[NL80211_SURVEY_INFO_IN_USE
])
817 *noise
= (int8_t)nla_get_u8(si
[NL80211_SURVEY_INFO_NOISE
]);
823 int nl80211_get_noise(const char *ifname
, int *buf
)
826 struct nl80211_msg_conveyor
*req
;
828 req
= nl80211_msg(ifname
, NL80211_CMD_GET_SURVEY
, NLM_F_DUMP
);
833 nl80211_cb(req
, nl80211_get_noise_cb
, &noise
);
834 nl80211_free(nl80211_send(req
));
847 int nl80211_get_quality(const char *ifname
, int *buf
)
851 if( wext_get_quality(ifname
, buf
) )
855 if( !nl80211_get_signal(ifname
, &signal
) )
857 /* A positive signal level is usually just a quality
858 * value, pass through as-is */
864 /* The cfg80211 wext compat layer assumes a signal range
865 * of -110 dBm to -40 dBm, the quality value is derived
866 * by adding 110 to the signal level */
871 else if( signal
> -40 )
874 *buf
= (signal
+ 110);
882 int nl80211_get_quality_max(const char *ifname
, int *buf
)
884 if( wext_get_quality_max(ifname
, buf
) )
885 /* The cfg80211 wext compat layer assumes a maximum
892 int nl80211_get_encryption(const char *ifname
, char *buf
)
897 struct iwinfo_crypto_entry
*c
= (struct iwinfo_crypto_entry
*)buf
;
900 if( (res
= nl80211_wpactl_info(ifname
, "STATUS", NULL
)) &&
901 (val
= nl80211_getval(NULL
, res
, "pairwise_cipher")) )
904 if( strstr(val
, "WEP") )
906 if( strstr(val
, "WEP-40") )
907 c
->pair_ciphers
|= IWINFO_CIPHER_WEP40
;
909 else if( strstr(val
, "WEP-104") )
910 c
->pair_ciphers
|= IWINFO_CIPHER_WEP104
;
913 c
->group_ciphers
= c
->pair_ciphers
;
915 c
->auth_suites
|= IWINFO_KMGMT_NONE
;
916 c
->auth_algs
|= IWINFO_AUTH_OPEN
; /* XXX: assumption */
922 if( strstr(val
, "TKIP") )
923 c
->pair_ciphers
|= IWINFO_CIPHER_TKIP
;
925 else if( strstr(val
, "CCMP") )
926 c
->pair_ciphers
|= IWINFO_CIPHER_CCMP
;
928 else if( strstr(val
, "NONE") )
929 c
->pair_ciphers
|= IWINFO_CIPHER_NONE
;
931 else if( strstr(val
, "WEP-40") )
932 c
->pair_ciphers
|= IWINFO_CIPHER_WEP40
;
934 else if( strstr(val
, "WEP-104") )
935 c
->pair_ciphers
|= IWINFO_CIPHER_WEP104
;
938 if( (val
= nl80211_getval(NULL
, res
, "group_cipher")) )
940 if( strstr(val
, "TKIP") )
941 c
->group_ciphers
|= IWINFO_CIPHER_TKIP
;
943 else if( strstr(val
, "CCMP") )
944 c
->group_ciphers
|= IWINFO_CIPHER_CCMP
;
946 else if( strstr(val
, "NONE") )
947 c
->group_ciphers
|= IWINFO_CIPHER_NONE
;
949 else if( strstr(val
, "WEP-40") )
950 c
->group_ciphers
|= IWINFO_CIPHER_WEP40
;
952 else if( strstr(val
, "WEP-104") )
953 c
->group_ciphers
|= IWINFO_CIPHER_WEP104
;
957 if( (val
= nl80211_getval(NULL
, res
, "key_mgmt")) )
959 if( strstr(val
, "WPA2") )
962 else if( strstr(val
, "WPA") )
966 if( strstr(val
, "PSK") )
967 c
->auth_suites
|= IWINFO_KMGMT_PSK
;
969 else if( strstr(val
, "EAP") || strstr(val
, "802.1X") )
970 c
->auth_suites
|= IWINFO_KMGMT_8021x
;
972 else if( strstr(val
, "NONE") )
973 c
->auth_suites
|= IWINFO_KMGMT_NONE
;
976 c
->enabled
= (c
->wpa_version
&& c
->auth_suites
) ? 1 : 0;
983 else if( (res
= nl80211_hostapd_info(ifname
)) )
985 if( (val
= nl80211_getval(ifname
, res
, "wpa")) != NULL
)
986 c
->wpa_version
= atoi(val
);
988 val
= nl80211_getval(ifname
, res
, "wpa_key_mgmt");
990 if( !val
|| strstr(val
, "PSK") )
991 c
->auth_suites
|= IWINFO_KMGMT_PSK
;
993 if( val
&& strstr(val
, "EAP") )
994 c
->auth_suites
|= IWINFO_KMGMT_8021x
;
996 if( val
&& strstr(val
, "NONE") )
997 c
->auth_suites
|= IWINFO_KMGMT_NONE
;
999 if( (val
= nl80211_getval(ifname
, res
, "wpa_pairwise")) != NULL
)
1001 if( strstr(val
, "TKIP") )
1002 c
->pair_ciphers
|= IWINFO_CIPHER_TKIP
;
1004 if( strstr(val
, "CCMP") )
1005 c
->pair_ciphers
|= IWINFO_CIPHER_CCMP
;
1007 if( strstr(val
, "NONE") )
1008 c
->pair_ciphers
|= IWINFO_CIPHER_NONE
;
1011 if( (val
= nl80211_getval(ifname
, res
, "auth_algs")) != NULL
)
1015 c
->auth_algs
|= IWINFO_AUTH_OPEN
;
1019 c
->auth_algs
|= IWINFO_AUTH_SHARED
;
1023 c
->auth_algs
|= IWINFO_AUTH_OPEN
;
1024 c
->auth_algs
|= IWINFO_AUTH_SHARED
;
1031 for( i
= 0; i
< 4; i
++ )
1033 snprintf(k
, sizeof(k
), "wep_key%d", i
);
1035 if( (val
= nl80211_getval(ifname
, res
, k
)) )
1037 if( (strlen(val
) == 5) || (strlen(val
) == 10) )
1038 c
->pair_ciphers
|= IWINFO_CIPHER_WEP40
;
1040 else if( (strlen(val
) == 13) || (strlen(val
) == 26) )
1041 c
->pair_ciphers
|= IWINFO_CIPHER_WEP104
;
1046 c
->group_ciphers
= c
->pair_ciphers
;
1047 c
->enabled
= (c
->auth_algs
|| c
->auth_suites
) ? 1 : 0;
1056 static int nl80211_get_assoclist_cb(struct nl_msg
*msg
, void *arg
)
1058 struct nl80211_assoc_count
*ac
= arg
;
1059 struct genlmsghdr
*gnlh
= nlmsg_data(nlmsg_hdr(msg
));
1060 struct nlattr
*attr
[NL80211_ATTR_MAX
+ 1];
1061 struct nlattr
*sinfo
[NL80211_STA_INFO_MAX
+ 1];
1063 static struct nla_policy stats_policy
[NL80211_STA_INFO_MAX
+ 1] = {
1064 [NL80211_STA_INFO_INACTIVE_TIME
] = { .type
= NLA_U32
},
1065 [NL80211_STA_INFO_RX_BYTES
] = { .type
= NLA_U32
},
1066 [NL80211_STA_INFO_TX_BYTES
] = { .type
= NLA_U32
},
1067 [NL80211_STA_INFO_RX_PACKETS
] = { .type
= NLA_U32
},
1068 [NL80211_STA_INFO_TX_PACKETS
] = { .type
= NLA_U32
},
1069 [NL80211_STA_INFO_SIGNAL
] = { .type
= NLA_U8
},
1070 [NL80211_STA_INFO_TX_BITRATE
] = { .type
= NLA_NESTED
},
1071 [NL80211_STA_INFO_LLID
] = { .type
= NLA_U16
},
1072 [NL80211_STA_INFO_PLID
] = { .type
= NLA_U16
},
1073 [NL80211_STA_INFO_PLINK_STATE
] = { .type
= NLA_U8
},
1076 nla_parse(attr
, NL80211_ATTR_MAX
, genlmsg_attrdata(gnlh
, 0),
1077 genlmsg_attrlen(gnlh
, 0), NULL
);
1079 if( attr
[NL80211_ATTR_MAC
] )
1080 memcpy(ac
->entry
->mac
, nla_data(attr
[NL80211_ATTR_MAC
]), 6);
1082 if( attr
[NL80211_ATTR_STA_INFO
] )
1084 if( !nla_parse_nested(sinfo
, NL80211_STA_INFO_MAX
,
1085 attr
[NL80211_ATTR_STA_INFO
], stats_policy
) )
1087 if( sinfo
[NL80211_STA_INFO_SIGNAL
] )
1088 ac
->entry
->signal
= nla_get_u8(sinfo
[NL80211_STA_INFO_SIGNAL
]);
1092 ac
->entry
->noise
= ac
->noise
;
1099 int nl80211_get_assoclist(const char *ifname
, char *buf
, int *len
)
1103 struct nl80211_assoc_count ac
;
1104 struct nl80211_msg_conveyor
*req
;
1106 if ((d
= opendir("/sys/class/net")) != NULL
)
1109 ac
.entry
= (struct iwinfo_assoclist_entry
*)buf
;
1111 nl80211_get_noise(ifname
, &ac
.noise
);
1113 while ((de
= readdir(d
)) != NULL
)
1115 if (!strncmp(de
->d_name
, ifname
, strlen(ifname
)) &&
1116 (!de
->d_name
[strlen(ifname
)] ||
1117 !strncmp(&de
->d_name
[strlen(ifname
)], ".sta", 4)))
1119 req
= nl80211_msg(de
->d_name
, NL80211_CMD_GET_STATION
,
1124 nl80211_cb(req
, nl80211_get_assoclist_cb
, &ac
);
1125 nl80211_free(nl80211_send(req
));
1133 *len
= (ac
.count
* sizeof(struct iwinfo_assoclist_entry
));
1140 int nl80211_get_txpwrlist(const char *ifname
, char *buf
, int *len
)
1142 int ch_cur
, ch_cmp
, bands_remain
, freqs_remain
;
1143 int dbm_max
= -1, dbm_cur
, dbm_cnt
;
1144 struct nl80211_msg_conveyor
*req
, *res
;
1145 struct nlattr
*bands
[NL80211_BAND_ATTR_MAX
+ 1];
1146 struct nlattr
*freqs
[NL80211_FREQUENCY_ATTR_MAX
+ 1];
1147 struct nlattr
*band
, *freq
;
1148 struct iwinfo_txpwrlist_entry entry
;
1150 static struct nla_policy freq_policy
[NL80211_FREQUENCY_ATTR_MAX
+ 1] = {
1151 [NL80211_FREQUENCY_ATTR_FREQ
] = { .type
= NLA_U32
},
1152 [NL80211_FREQUENCY_ATTR_DISABLED
] = { .type
= NLA_FLAG
},
1153 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN
] = { .type
= NLA_FLAG
},
1154 [NL80211_FREQUENCY_ATTR_NO_IBSS
] = { .type
= NLA_FLAG
},
1155 [NL80211_FREQUENCY_ATTR_RADAR
] = { .type
= NLA_FLAG
},
1156 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER
] = { .type
= NLA_U32
},
1159 if( nl80211_get_channel(ifname
, &ch_cur
) )
1162 req
= nl80211_msg(ifname
, NL80211_CMD_GET_WIPHY
, 0);
1165 res
= nl80211_send(req
);
1168 nla_for_each_nested(band
,
1169 res
->attr
[NL80211_ATTR_WIPHY_BANDS
], bands_remain
)
1171 nla_parse(bands
, NL80211_BAND_ATTR_MAX
, nla_data(band
),
1172 nla_len(band
), NULL
);
1174 nla_for_each_nested(freq
,
1175 bands
[NL80211_BAND_ATTR_FREQS
], freqs_remain
)
1177 nla_parse(freqs
, NL80211_FREQUENCY_ATTR_MAX
,
1178 nla_data(freq
), nla_len(freq
), freq_policy
);
1180 ch_cmp
= nl80211_freq2channel(
1181 nla_get_u32(freqs
[NL80211_FREQUENCY_ATTR_FREQ
]));
1183 if( (!ch_cur
|| (ch_cmp
== ch_cur
)) &&
1184 freqs
[NL80211_FREQUENCY_ATTR_MAX_TX_POWER
] )
1186 dbm_max
= (int)(0.01 * nla_get_u32(
1187 freqs
[NL80211_FREQUENCY_ATTR_MAX_TX_POWER
]));
1201 for( dbm_cur
= 0, dbm_cnt
= 0;
1203 dbm_cur
++, dbm_cnt
++ )
1205 entry
.dbm
= dbm_cur
;
1206 entry
.mw
= iwinfo_dbm2mw(dbm_cur
);
1208 memcpy(&buf
[dbm_cnt
* sizeof(entry
)], &entry
, sizeof(entry
));
1211 entry
.dbm
= dbm_max
;
1212 entry
.mw
= iwinfo_dbm2mw(dbm_max
);
1214 memcpy(&buf
[dbm_cnt
* sizeof(entry
)], &entry
, sizeof(entry
));
1217 *len
= dbm_cnt
* sizeof(entry
);
1224 static void nl80211_get_scancrypto(const char *spec
,
1225 struct iwinfo_crypto_entry
*c
)
1227 if( strstr(spec
, "WPA") || strstr(spec
, "WEP") )
1231 if( strstr(spec
, "WPA2-") && strstr(spec
, "WPA-") )
1234 else if( strstr(spec
, "WPA2") )
1237 else if( strstr(spec
, "WPA") )
1240 else if( strstr(spec
, "WEP") )
1241 c
->auth_algs
= IWINFO_AUTH_OPEN
| IWINFO_AUTH_SHARED
;
1244 if( strstr(spec
, "PSK") )
1245 c
->auth_suites
|= IWINFO_KMGMT_PSK
;
1247 if( strstr(spec
, "802.1X") || strstr(spec
, "EAP") )
1248 c
->auth_suites
|= IWINFO_KMGMT_8021x
;
1250 if( strstr(spec
, "WPA-NONE") )
1251 c
->auth_suites
|= IWINFO_KMGMT_NONE
;
1254 if( strstr(spec
, "TKIP") )
1255 c
->pair_ciphers
|= IWINFO_CIPHER_TKIP
;
1257 if( strstr(spec
, "CCMP") )
1258 c
->pair_ciphers
|= IWINFO_CIPHER_CCMP
;
1260 if( strstr(spec
, "WEP-40") )
1261 c
->pair_ciphers
|= IWINFO_CIPHER_WEP40
;
1263 if( strstr(spec
, "WEP-104") )
1264 c
->pair_ciphers
|= IWINFO_CIPHER_WEP104
;
1266 c
->group_ciphers
= c
->pair_ciphers
;
1274 int nl80211_get_scanlist(const char *ifname
, char *buf
, int *len
)
1276 int freq
, rssi
, qmax
, count
;
1278 char ssid
[128] = { 0 };
1279 char bssid
[18] = { 0 };
1280 char cipher
[256] = { 0 };
1282 /* Got a radioX pseudo interface, find some interface on it or create one */
1283 if( !strncmp(ifname
, "radio", 5) )
1285 /* Reuse existing interface */
1286 if( (res
= nl80211_phy2ifname(ifname
)) != NULL
)
1288 return nl80211_get_scanlist(res
, buf
, len
);
1291 /* Need to spawn a temporary iface for scanning */
1292 else if( (res
= nl80211_ifadd(ifname
)) != NULL
)
1294 count
= nl80211_get_scanlist(res
, buf
, len
);
1300 struct iwinfo_scanlist_entry
*e
= (struct iwinfo_scanlist_entry
*)buf
;
1302 /* WPA supplicant */
1303 if( (res
= nl80211_wpactl_info(ifname
, "SCAN", "CTRL-EVENT-SCAN-RESULTS")) )
1305 if( (res
= nl80211_wpactl_info(ifname
, "SCAN_RESULTS", NULL
)) )
1307 nl80211_get_quality_max(ifname
, &qmax
);
1309 /* skip header line */
1310 while( *res
++ != '\n' );
1314 while( sscanf(res
, "%17s %d %d %255s%*[ \t]%127[^\n]\n",
1315 bssid
, &freq
, &rssi
, cipher
, ssid
) > 0 )
1318 e
->mac
[0] = strtol(&bssid
[0], NULL
, 16);
1319 e
->mac
[1] = strtol(&bssid
[3], NULL
, 16);
1320 e
->mac
[2] = strtol(&bssid
[6], NULL
, 16);
1321 e
->mac
[3] = strtol(&bssid
[9], NULL
, 16);
1322 e
->mac
[4] = strtol(&bssid
[12], NULL
, 16);
1323 e
->mac
[5] = strtol(&bssid
[15], NULL
, 16);
1326 memcpy(e
->ssid
, ssid
,
1327 min(strlen(ssid
), sizeof(e
->ssid
) - 1));
1329 /* Mode (assume master) */
1330 sprintf((char *)e
->mode
, "Master");
1333 e
->channel
= nl80211_freq2channel(freq
);
1341 /* The cfg80211 wext compat layer assumes a signal range
1342 * of -110 dBm to -40 dBm, the quality value is derived
1343 * by adding 110 to the signal level */
1346 else if( rssi
> -40 )
1349 e
->quality
= (rssi
+ 110);
1357 e
->quality_max
= qmax
;
1360 nl80211_get_scancrypto(cipher
, &e
->crypto
);
1362 /* advance to next line */
1363 while( *res
&& *res
++ != '\n' );
1368 memset(ssid
, 0, sizeof(ssid
));
1369 memset(bssid
, 0, sizeof(bssid
));
1370 memset(cipher
, 0, sizeof(cipher
));
1373 *len
= count
* sizeof(struct iwinfo_scanlist_entry
);
1381 /* Got a temp interface, don't create yet another one */
1382 if( !strncmp(ifname
, "tmp.", 4) )
1384 if( !iwinfo_ifup(ifname
) )
1387 wext_get_scanlist(ifname
, buf
, len
);
1388 iwinfo_ifdown(ifname
);
1392 /* Spawn a new scan interface */
1395 if( !(res
= nl80211_ifadd(ifname
)) )
1398 if( !iwinfo_ifmac(res
) )
1401 /* if we can take the new interface up, the driver supports an
1402 * additional interface and there's no need to tear down the ap */
1403 if( iwinfo_ifup(res
) )
1405 wext_get_scanlist(res
, buf
, len
);
1409 /* driver cannot create secondary interface, take down ap
1411 else if( iwinfo_ifdown(ifname
) && iwinfo_ifup(res
) )
1413 wext_get_scanlist(res
, buf
, len
);
1415 iwinfo_ifup(ifname
);
1416 nl80211_hostapd_hup(ifname
);
1428 int nl80211_get_freqlist(const char *ifname
, char *buf
, int *len
)
1430 int count
= 0, bands_remain
, freqs_remain
;
1431 struct nl80211_msg_conveyor
*req
, *res
;
1432 struct nlattr
*bands
[NL80211_BAND_ATTR_MAX
+ 1];
1433 struct nlattr
*freqs
[NL80211_FREQUENCY_ATTR_MAX
+ 1];
1434 struct nlattr
*band
, *freq
;
1435 struct iwinfo_freqlist_entry
*e
= (struct iwinfo_freqlist_entry
*)buf
;
1437 req
= nl80211_msg(ifname
, NL80211_CMD_GET_WIPHY
, 0);
1440 res
= nl80211_send(req
);
1441 if( res
&& res
->attr
[NL80211_ATTR_WIPHY_BANDS
] )
1443 nla_for_each_nested(band
,
1444 res
->attr
[NL80211_ATTR_WIPHY_BANDS
], bands_remain
)
1446 nla_parse(bands
, NL80211_BAND_ATTR_MAX
, nla_data(band
),
1447 nla_len(band
), NULL
);
1449 nla_for_each_nested(freq
,
1450 bands
[NL80211_BAND_ATTR_FREQS
], freqs_remain
)
1452 nla_parse(freqs
, NL80211_FREQUENCY_ATTR_MAX
,
1453 nla_data(freq
), nla_len(freq
), NULL
);
1455 if( !freqs
[NL80211_FREQUENCY_ATTR_FREQ
] ||
1456 freqs
[NL80211_FREQUENCY_ATTR_DISABLED
] )
1459 e
->mhz
= nla_get_u32(freqs
[NL80211_FREQUENCY_ATTR_FREQ
]);
1460 e
->channel
= nl80211_freq2channel(e
->mhz
);
1463 freqs
[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN
] ||
1464 freqs
[NL80211_FREQUENCY_ATTR_NO_IBSS
] ||
1465 freqs
[NL80211_FREQUENCY_ATTR_RADAR
]
1479 *len
= count
* sizeof(struct iwinfo_freqlist_entry
);
1486 int nl80211_get_country(const char *ifname
, char *buf
)
1489 struct nl80211_msg_conveyor
*req
, *res
;
1491 req
= nl80211_msg(ifname
, NL80211_CMD_GET_REG
, 0);
1494 res
= nl80211_send(req
);
1497 if( res
->attr
[NL80211_ATTR_REG_ALPHA2
] )
1499 memcpy(buf
, nla_data(res
->attr
[NL80211_ATTR_REG_ALPHA2
]), 2);
1510 int nl80211_get_countrylist(const char *ifname
, char *buf
, int *len
)
1513 struct iwinfo_iso3166_label
*l
;
1514 struct iwinfo_country_entry
*e
= (struct iwinfo_country_entry
*)buf
;
1516 for( l
= ISO3166_Names
, count
= 0; l
->iso3166
; l
++, e
++, count
++ )
1518 e
->iso3166
= l
->iso3166
;
1519 e
->ccode
[0] = (l
->iso3166
/ 256);
1520 e
->ccode
[1] = (l
->iso3166
% 256);
1523 *len
= (count
* sizeof(struct iwinfo_country_entry
));
1527 int nl80211_get_hwmodelist(const char *ifname
, int *buf
)
1529 int bands_remain
, freqs_remain
;
1530 struct nl80211_msg_conveyor
*req
, *res
;
1531 struct nlattr
*bands
[NL80211_BAND_ATTR_MAX
+ 1];
1532 struct nlattr
*freqs
[NL80211_FREQUENCY_ATTR_MAX
+ 1];
1533 struct nlattr
*band
, *freq
;
1536 req
= nl80211_msg(ifname
, NL80211_CMD_GET_WIPHY
, 0);
1539 res
= nl80211_send(req
);
1540 if( res
&& res
->attr
[NL80211_ATTR_WIPHY_BANDS
] )
1542 nla_for_each_nested(band
,
1543 res
->attr
[NL80211_ATTR_WIPHY_BANDS
], bands_remain
)
1545 nla_parse(bands
, NL80211_BAND_ATTR_MAX
, nla_data(band
),
1546 nla_len(band
), NULL
);
1548 if( bands
[NL80211_BAND_ATTR_HT_CAPA
] )
1549 caps
= nla_get_u16(bands
[NL80211_BAND_ATTR_HT_CAPA
]);
1551 /* Treat any nonzero capability as 11n */
1553 *buf
|= IWINFO_80211_N
;
1555 nla_for_each_nested(freq
,
1556 bands
[NL80211_BAND_ATTR_FREQS
], freqs_remain
)
1558 nla_parse(freqs
, NL80211_FREQUENCY_ATTR_MAX
,
1559 nla_data(freq
), nla_len(freq
), NULL
);
1561 if( !freqs
[NL80211_FREQUENCY_ATTR_FREQ
] )
1564 if( nla_get_u32(freqs
[NL80211_FREQUENCY_ATTR_FREQ
]) < 2485 )
1566 *buf
|= IWINFO_80211_B
;
1567 *buf
|= IWINFO_80211_G
;
1571 *buf
|= IWINFO_80211_A
;
1580 return *buf
? 0 : -1;
1583 int nl80211_get_mbssid_support(const char *ifname
, int *buf
)
1585 /* Test whether we can create another interface */
1586 char *nif
= nl80211_ifadd(ifname
);
1590 *buf
= (iwinfo_ifmac(nif
) && iwinfo_ifup(nif
));