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
, "radio", 5) )
149 phyidx
= atoi(&ifname
[5]);
150 else if( !strncmp(ifname
, "mon.", 4) )
151 ifidx
= if_nametoindex(&ifname
[4]);
153 ifidx
= if_nametoindex(ifname
);
155 if( (ifidx
< 0) && (phyidx
< 0) )
162 cb
= nl_cb_alloc(NL_CB_DEFAULT
);
166 genlmsg_put(req
, 0, 0, genl_family_get_id(nls
->nl80211
), 0,
170 NLA_PUT_U32(req
, NL80211_ATTR_IFINDEX
, ifidx
);
173 NLA_PUT_U32(req
, NL80211_ATTR_WIPHY
, phyidx
);
194 static void nl80211_cb(struct nl80211_msg_conveyor
*cv
,
195 int (*cb
)(struct nl_msg
*, void *), void *arg
)
198 nl_cb_set(cv
->cb
, NL_CB_VALID
, NL_CB_CUSTOM
, cb
, arg
);
201 static struct nl80211_msg_conveyor
* nl80211_send(struct nl80211_msg_conveyor
*cv
)
203 static struct nl80211_msg_conveyor rcv
;
207 nl_cb_set(cv
->cb
, NL_CB_VALID
, NL_CB_CUSTOM
, nl80211_msg_response
, &rcv
);
209 if( nl_send_auto_complete(nls
->nl_sock
, cv
->msg
) < 0 )
212 nl_cb_err(cv
->cb
, NL_CB_CUSTOM
, nl80211_msg_error
, &err
);
213 nl_cb_set(cv
->cb
, NL_CB_FINISH
, NL_CB_CUSTOM
, nl80211_msg_finish
, &err
);
214 nl_cb_set(cv
->cb
, NL_CB_ACK
, NL_CB_CUSTOM
, nl80211_msg_ack
, &err
);
217 nl_recvmsgs(nls
->nl_sock
, cv
->cb
);
228 static int nl80211_freq2channel(int freq
)
234 return (freq
- 2407) / 5;
236 return (freq
/ 5) - 1000;
239 static char * nl80211_getval(const char *buf
, const char *key
)
242 char lkey
[64] = { 0 };
243 const char *ln
= buf
;
244 static char lval
[256] = { 0 };
246 for( i
= 0, len
= strlen(buf
); i
< len
; i
++ )
248 if( !lkey
[0] && (buf
[i
] == ' ' || buf
[i
] == '\t') )
252 else if( !lkey
[0] && (buf
[i
] == '=') )
254 if( (&buf
[i
] - ln
) > 0 )
255 memcpy(lkey
, ln
, min(sizeof(lkey
) - 1, &buf
[i
] - ln
));
257 else if( buf
[i
] == '\n' )
259 if( lkey
[0] && !strcmp(lkey
, key
) )
261 memcpy(lval
, ln
+ strlen(lkey
) + 1,
262 min(sizeof(lval
) - 1, &buf
[i
] - ln
- strlen(lkey
) - 1));
268 memset(lkey
, 0, sizeof(lkey
));
269 memset(lval
, 0, sizeof(lval
));
276 static char * nl80211_ifname2phy(const char *ifname
)
278 static char phy
[32] = { 0 };
279 struct nl80211_msg_conveyor
*req
, *res
;
281 req
= nl80211_msg(ifname
, NL80211_CMD_GET_WIPHY
, 0);
284 res
= nl80211_send(req
);
287 if( res
->attr
[NL80211_ATTR_WIPHY_NAME
] )
289 snprintf(phy
, sizeof(phy
), "%s",
290 nla_get_string(res
->attr
[NL80211_ATTR_WIPHY_NAME
]));
297 return phy
[0] ? phy
: NULL
;
300 static char * nl80211_hostapd_info(const char *ifname
)
303 char path
[32] = { 0 };
304 static char buf
[4096] = { 0 };
307 if( (phy
= nl80211_ifname2phy(ifname
)) != NULL
)
309 snprintf(path
, sizeof(path
), "/var/run/hostapd-%s.conf", phy
);
311 if( (conf
= fopen(path
, "r")) != NULL
)
313 fread(buf
, sizeof(buf
) - 1, 1, conf
);
323 static char * nl80211_wpasupp_info(const char *ifname
, const char *cmd
)
327 size_t remote_length
, local_length
;
328 static char buffer
[1024] = { 0 };
330 struct timeval tv
= { 2, 0 };
331 struct sockaddr_un local
= { 0 };
332 struct sockaddr_un remote
= { 0 };
336 sock
= socket(PF_UNIX
, SOCK_DGRAM
, 0);
340 remote
.sun_family
= AF_UNIX
;
341 remote_length
= sizeof(remote
.sun_family
) + sprintf(remote
.sun_path
,
342 "/var/run/wpa_supplicant-%s/%s", ifname
, ifname
);
344 if( fcntl(sock
, F_SETFD
, fcntl(sock
, F_GETFD
) | FD_CLOEXEC
) < 0 )
347 if( connect(sock
, (struct sockaddr
*) &remote
, remote_length
) )
350 local
.sun_family
= AF_UNIX
;
351 local_length
= sizeof(local
.sun_family
) + sprintf(local
.sun_path
,
352 "/var/run/iwinfo-%s-%d", ifname
, getpid());
354 if( bind(sock
, (struct sockaddr
*) &local
, local_length
) )
357 send(sock
, cmd
, strlen(cmd
), 0);
364 if( select(sock
+ 1, &rfds
, NULL
, NULL
, &tv
) < 0 )
367 if( !FD_ISSET(sock
, &rfds
) )
370 if( (len
= recv(sock
, buffer
, sizeof(buffer
), 0)) <= 0 )
375 if( buffer
[0] != '<' )
383 unlink(local
.sun_path
);
388 static char * nl80211_phy2ifname(const char *ifname
)
392 static char nif
[IFNAMSIZ
] = { 0 };
397 if( !strncmp(ifname
, "radio", 5) )
399 phyidx
= atoi(&ifname
[5]);
401 if( (d
= opendir("/sys/class/net")) != NULL
)
403 while( (e
= readdir(d
)) != NULL
)
405 snprintf(buffer
, sizeof(buffer
),
406 "/sys/class/net/%s/phy80211/index", e
->d_name
);
408 if( (fd
= open(buffer
, O_RDONLY
)) > 0 )
410 if( (read(fd
, buffer
, sizeof(buffer
)) > 0) &&
411 (atoi(buffer
) == phyidx
) )
413 strncpy(nif
, e
->d_name
, sizeof(nif
));
427 return nif
[0] ? nif
: NULL
;
430 static char * nl80211_add_tempif(const char *ifname
)
434 static char nif
[IFNAMSIZ
] = { 0 };
435 struct nl80211_msg_conveyor
*req
, *res
;
437 req
= nl80211_msg(ifname
, NL80211_CMD_NEW_INTERFACE
, 0);
440 snprintf(nif
, sizeof(nif
), "tmp.%s", ifname
);
442 NLA_PUT_STRING(req
->msg
, NL80211_ATTR_IFNAME
, nif
);
443 NLA_PUT_U32(req
->msg
, NL80211_ATTR_IFTYPE
, NL80211_IFTYPE_STATION
);
445 res
= nl80211_send(req
);
459 static void nl80211_del_tempif(const char *ifname
)
461 struct nl80211_msg_conveyor
*req
, *res
;
463 req
= nl80211_msg(ifname
, NL80211_CMD_DEL_INTERFACE
, 0);
466 NLA_PUT_STRING(req
->msg
, NL80211_ATTR_IFNAME
, ifname
);
468 nl80211_free(nl80211_send(req
));
476 int nl80211_probe(const char *ifname
)
478 return !!nl80211_ifname2phy(ifname
);
481 void nl80211_close(void)
486 nl_socket_free(nls
->nl_sock
);
489 nl_cache_free(nls
->nl_cache
);
496 int nl80211_get_mode(const char *ifname
, char *buf
)
498 return wext_get_mode(ifname
, buf
);
501 int nl80211_get_ssid(const char *ifname
, char *buf
)
505 if( !wext_get_ssid(ifname
, buf
) )
509 else if( (ssid
= nl80211_hostapd_info(ifname
)) &&
510 (ssid
= nl80211_getval(ssid
, "ssid")) )
512 memcpy(buf
, ssid
, strlen(ssid
));
519 int nl80211_get_bssid(const char *ifname
, char *buf
)
522 unsigned char mac
[6];
524 if( !wext_get_bssid(ifname
, buf
) )
528 else if( (bssid
= nl80211_hostapd_info(ifname
)) &&
529 (bssid
= nl80211_getval(bssid
, "bssid")) )
531 mac
[0] = strtol(&bssid
[0], NULL
, 16);
532 mac
[1] = strtol(&bssid
[3], NULL
, 16);
533 mac
[2] = strtol(&bssid
[6], NULL
, 16);
534 mac
[3] = strtol(&bssid
[9], NULL
, 16);
535 mac
[4] = strtol(&bssid
[12], NULL
, 16);
536 mac
[5] = strtol(&bssid
[15], NULL
, 16);
538 sprintf(buf
, "%02X:%02X:%02X:%02X:%02X:%02X",
539 mac
[0], mac
[1], mac
[2], mac
[3], mac
[4], mac
[5]);
547 int nl80211_get_channel(const char *ifname
, int *buf
)
549 return wext_get_channel(ifname
, buf
);
552 int nl80211_get_frequency(const char *ifname
, int *buf
)
554 return wext_get_frequency(ifname
, buf
);
557 int nl80211_get_txpower(const char *ifname
, int *buf
)
559 return wext_get_txpower(ifname
, buf
);
563 static int nl80211_get_signal_cb(struct nl_msg
*msg
, void *arg
)
567 struct nl80211_rssi_rate
*rr
= arg
;
569 struct genlmsghdr
*gnlh
= nlmsg_data(nlmsg_hdr(msg
));
570 struct nlattr
*attr
[NL80211_ATTR_MAX
+ 1];
571 struct nlattr
*sinfo
[NL80211_STA_INFO_MAX
+ 1];
572 struct nlattr
*rinfo
[NL80211_RATE_INFO_MAX
+ 1];
574 static struct nla_policy stats_policy
[NL80211_STA_INFO_MAX
+ 1] = {
575 [NL80211_STA_INFO_INACTIVE_TIME
] = { .type
= NLA_U32
},
576 [NL80211_STA_INFO_RX_BYTES
] = { .type
= NLA_U32
},
577 [NL80211_STA_INFO_TX_BYTES
] = { .type
= NLA_U32
},
578 [NL80211_STA_INFO_RX_PACKETS
] = { .type
= NLA_U32
},
579 [NL80211_STA_INFO_TX_PACKETS
] = { .type
= NLA_U32
},
580 [NL80211_STA_INFO_SIGNAL
] = { .type
= NLA_U8
},
581 [NL80211_STA_INFO_TX_BITRATE
] = { .type
= NLA_NESTED
},
582 [NL80211_STA_INFO_LLID
] = { .type
= NLA_U16
},
583 [NL80211_STA_INFO_PLID
] = { .type
= NLA_U16
},
584 [NL80211_STA_INFO_PLINK_STATE
] = { .type
= NLA_U8
},
587 static struct nla_policy rate_policy
[NL80211_RATE_INFO_MAX
+ 1] = {
588 [NL80211_RATE_INFO_BITRATE
] = { .type
= NLA_U16
},
589 [NL80211_RATE_INFO_MCS
] = { .type
= NLA_U8
},
590 [NL80211_RATE_INFO_40_MHZ_WIDTH
] = { .type
= NLA_FLAG
},
591 [NL80211_RATE_INFO_SHORT_GI
] = { .type
= NLA_FLAG
},
594 nla_parse(attr
, NL80211_ATTR_MAX
, genlmsg_attrdata(gnlh
, 0),
595 genlmsg_attrlen(gnlh
, 0), NULL
);
597 if( attr
[NL80211_ATTR_STA_INFO
] )
599 if( !nla_parse_nested(sinfo
, NL80211_STA_INFO_MAX
,
600 attr
[NL80211_ATTR_STA_INFO
], stats_policy
) )
602 if( sinfo
[NL80211_STA_INFO_SIGNAL
] )
604 dbm
= nla_get_u8(sinfo
[NL80211_STA_INFO_SIGNAL
]);
605 rr
->rssi
= rr
->rssi
? (int8_t)((rr
->rssi
+ dbm
) / 2) : dbm
;
608 if( sinfo
[NL80211_STA_INFO_TX_BITRATE
] )
610 if( !nla_parse_nested(rinfo
, NL80211_RATE_INFO_MAX
,
611 sinfo
[NL80211_STA_INFO_TX_BITRATE
], rate_policy
) )
613 if( rinfo
[NL80211_RATE_INFO_BITRATE
] )
615 mbit
= nla_get_u16(rinfo
[NL80211_RATE_INFO_BITRATE
]);
617 ? (int16_t)((rr
->rate
+ mbit
) / 2) : mbit
;
627 int nl80211_get_bitrate(const char *ifname
, int *buf
)
629 struct nl80211_rssi_rate rr
;
630 struct nl80211_msg_conveyor
*req
;
632 if( !wext_get_bitrate(ifname
, buf
) )
635 req
= nl80211_msg(ifname
, NL80211_CMD_GET_STATION
, NLM_F_DUMP
);
641 nl80211_cb(req
, nl80211_get_signal_cb
, &rr
);
647 *buf
= (rr
.rate
* 100);
655 int nl80211_get_signal(const char *ifname
, int *buf
)
657 struct nl80211_rssi_rate rr
;
658 struct nl80211_msg_conveyor
*req
;
660 if( !wext_get_signal(ifname
, buf
) )
663 req
= nl80211_msg(ifname
, NL80211_CMD_GET_STATION
, NLM_F_DUMP
);
669 nl80211_cb(req
, nl80211_get_signal_cb
, &rr
);
683 int nl80211_get_noise(const char *ifname
, int *buf
)
686 struct nl80211_msg_conveyor
*req
, *res
;
687 struct nlattr
*si
[NL80211_SURVEY_INFO_MAX
+ 1];
689 static struct nla_policy sp
[NL80211_SURVEY_INFO_MAX
+ 1] = {
690 [NL80211_SURVEY_INFO_FREQUENCY
] = { .type
= NLA_U32
},
691 [NL80211_SURVEY_INFO_NOISE
] = { .type
= NLA_U8
},
694 req
= nl80211_msg(ifname
, NL80211_CMD_GET_SURVEY
, NLM_F_DUMP
);
697 res
= nl80211_send(req
);
700 if( res
->attr
[NL80211_ATTR_SURVEY_INFO
] )
702 if( !nla_parse_nested(si
, NL80211_SURVEY_INFO_MAX
,
703 res
->attr
[NL80211_ATTR_SURVEY_INFO
], sp
) &&
704 si
[NL80211_SURVEY_INFO_NOISE
] )
706 *buf
= (int8_t)nla_get_u8(si
[NL80211_SURVEY_INFO_NOISE
]);
718 int nl80211_get_quality(const char *ifname
, int *buf
)
722 if( wext_get_quality(ifname
, buf
) )
726 if( !nl80211_get_signal(ifname
, &signal
) )
728 /* A positive signal level is usually just a quality
729 * value, pass through as-is */
735 /* The cfg80211 wext compat layer assumes a signal range
736 * of -110 dBm to -40 dBm, the quality value is derived
737 * by adding 110 to the signal level */
742 else if( signal
> -40 )
745 *buf
= (signal
+ 110);
753 int nl80211_get_quality_max(const char *ifname
, int *buf
)
755 if( wext_get_quality_max(ifname
, buf
) )
756 /* The cfg80211 wext compat layer assumes a maximum
763 int nl80211_get_encryption(const char *ifname
, char *buf
)
768 struct iwinfo_crypto_entry
*c
= (struct iwinfo_crypto_entry
*)buf
;
771 if( (res
= nl80211_hostapd_info(ifname
)) &&
772 nl80211_getval(res
, "interface") )
774 if( (val
= nl80211_getval(res
, "auth_algs")) && (val
> 0) )
776 c
->auth_suites
|= IWINFO_KMGMT_NONE
;
780 c
->auth_algs
|= IWINFO_AUTH_OPEN
;
784 c
->auth_algs
|= IWINFO_AUTH_SHARED
;
788 c
->auth_algs
|= IWINFO_AUTH_OPEN
;
789 c
->auth_algs
|= IWINFO_AUTH_SHARED
;
796 for( i
= 0; i
< 4; i
++ )
798 snprintf(k
, sizeof(k
), "wep_key%d", i
);
800 if( (val
= nl80211_getval(res
, k
)) )
802 if( (strlen(val
) == 5) || (strlen(val
) == 10) )
803 c
->pair_ciphers
|= IWINFO_CIPHER_WEP40
;
805 else if( (strlen(val
) == 13) || (strlen(val
) == 26) )
806 c
->pair_ciphers
|= IWINFO_CIPHER_WEP104
;
810 c
->group_ciphers
= c
->pair_ciphers
;
816 if( (val
= nl80211_getval(res
, "wpa")) != NULL
)
817 c
->wpa_version
= atoi(val
);
820 val
= nl80211_getval(res
, "wpa_key_mgmt");
822 if( !val
|| strstr(val
, "PSK") )
823 c
->auth_suites
|= IWINFO_KMGMT_PSK
;
825 if( val
&& strstr(val
, "EAP") )
826 c
->auth_suites
|= IWINFO_KMGMT_8021x
;
828 if( val
&& strstr(val
, "NONE") )
829 c
->auth_suites
|= IWINFO_KMGMT_NONE
;
832 if( (val
= nl80211_getval(res
, "wpa_pairwise")) != NULL
)
834 if( strstr(val
, "TKIP") )
835 c
->pair_ciphers
|= IWINFO_CIPHER_TKIP
;
837 if( strstr(val
, "CCMP") )
838 c
->pair_ciphers
|= IWINFO_CIPHER_CCMP
;
840 if( strstr(val
, "NONE") )
841 c
->pair_ciphers
|= IWINFO_CIPHER_NONE
;
845 c
->group_ciphers
= c
->pair_ciphers
;
846 c
->enabled
= (c
->auth_algs
|| c
->auth_suites
) ? 1 : 0;
852 else if( (res
= nl80211_wpasupp_info(ifname
, "STATUS")) &&
853 (val
= nl80211_getval(res
, "pairwise_cipher")) )
856 if( strstr(val
, "WEP") )
858 if( strstr(val
, "WEP-40") )
859 c
->pair_ciphers
|= IWINFO_CIPHER_WEP40
;
861 else if( strstr(val
, "WEP-104") )
862 c
->pair_ciphers
|= IWINFO_CIPHER_WEP104
;
865 c
->group_ciphers
= c
->pair_ciphers
;
867 c
->auth_suites
|= IWINFO_KMGMT_NONE
;
868 c
->auth_algs
|= IWINFO_AUTH_OPEN
; /* XXX: assumption */
874 if( strstr(val
, "TKIP") )
875 c
->pair_ciphers
|= IWINFO_CIPHER_TKIP
;
877 else if( strstr(val
, "CCMP") )
878 c
->pair_ciphers
|= IWINFO_CIPHER_CCMP
;
880 else if( strstr(val
, "NONE") )
881 c
->pair_ciphers
|= IWINFO_CIPHER_NONE
;
883 else if( strstr(val
, "WEP-40") )
884 c
->pair_ciphers
|= IWINFO_CIPHER_WEP40
;
886 else if( strstr(val
, "WEP-104") )
887 c
->pair_ciphers
|= IWINFO_CIPHER_WEP104
;
890 if( (val
= nl80211_getval(res
, "group_cipher")) )
892 if( strstr(val
, "TKIP") )
893 c
->group_ciphers
|= IWINFO_CIPHER_TKIP
;
895 else if( strstr(val
, "CCMP") )
896 c
->group_ciphers
|= IWINFO_CIPHER_CCMP
;
898 else if( strstr(val
, "NONE") )
899 c
->group_ciphers
|= IWINFO_CIPHER_NONE
;
901 else if( strstr(val
, "WEP-40") )
902 c
->group_ciphers
|= IWINFO_CIPHER_WEP40
;
904 else if( strstr(val
, "WEP-104") )
905 c
->group_ciphers
|= IWINFO_CIPHER_WEP104
;
909 if( (val
= nl80211_getval(res
, "key_mgmt")) )
911 if( strstr(val
, "WPA2") )
914 else if( strstr(val
, "WPA") )
918 if( strstr(val
, "PSK") )
919 c
->auth_suites
|= IWINFO_KMGMT_PSK
;
921 else if( strstr(val
, "EAP") || strstr(val
, "802.1X") )
922 c
->auth_suites
|= IWINFO_KMGMT_8021x
;
924 else if( strstr(val
, "NONE") )
925 c
->auth_suites
|= IWINFO_KMGMT_NONE
;
928 c
->enabled
= (c
->wpa_version
&& c
->auth_suites
) ? 1 : 0;
938 static int nl80211_get_assoclist_cb(struct nl_msg
*msg
, void *arg
)
940 struct nl80211_assoc_count
*ac
= arg
;
941 struct genlmsghdr
*gnlh
= nlmsg_data(nlmsg_hdr(msg
));
942 struct nlattr
*attr
[NL80211_ATTR_MAX
+ 1];
943 struct nlattr
*sinfo
[NL80211_STA_INFO_MAX
+ 1];
945 static struct nla_policy stats_policy
[NL80211_STA_INFO_MAX
+ 1] = {
946 [NL80211_STA_INFO_INACTIVE_TIME
] = { .type
= NLA_U32
},
947 [NL80211_STA_INFO_RX_BYTES
] = { .type
= NLA_U32
},
948 [NL80211_STA_INFO_TX_BYTES
] = { .type
= NLA_U32
},
949 [NL80211_STA_INFO_RX_PACKETS
] = { .type
= NLA_U32
},
950 [NL80211_STA_INFO_TX_PACKETS
] = { .type
= NLA_U32
},
951 [NL80211_STA_INFO_SIGNAL
] = { .type
= NLA_U8
},
952 [NL80211_STA_INFO_TX_BITRATE
] = { .type
= NLA_NESTED
},
953 [NL80211_STA_INFO_LLID
] = { .type
= NLA_U16
},
954 [NL80211_STA_INFO_PLID
] = { .type
= NLA_U16
},
955 [NL80211_STA_INFO_PLINK_STATE
] = { .type
= NLA_U8
},
958 nla_parse(attr
, NL80211_ATTR_MAX
, genlmsg_attrdata(gnlh
, 0),
959 genlmsg_attrlen(gnlh
, 0), NULL
);
961 if( attr
[NL80211_ATTR_MAC
] )
962 memcpy(ac
->entry
->mac
, nla_data(attr
[NL80211_ATTR_MAC
]), 6);
964 if( attr
[NL80211_ATTR_STA_INFO
] )
966 if( !nla_parse_nested(sinfo
, NL80211_STA_INFO_MAX
,
967 attr
[NL80211_ATTR_STA_INFO
], stats_policy
) )
969 if( sinfo
[NL80211_STA_INFO_SIGNAL
] )
970 ac
->entry
->signal
= nla_get_u8(sinfo
[NL80211_STA_INFO_SIGNAL
]);
974 ac
->entry
->noise
= ac
->noise
;
981 int nl80211_get_assoclist(const char *ifname
, char *buf
, int *len
)
983 struct nl80211_assoc_count ac
;
984 struct nl80211_msg_conveyor
*req
;
986 nl80211_get_noise(ifname
, &ac
.noise
);
988 req
= nl80211_msg(ifname
, NL80211_CMD_GET_STATION
, NLM_F_DUMP
);
992 ac
.entry
= (struct iwinfo_assoclist_entry
*)buf
;
994 nl80211_cb(req
, nl80211_get_assoclist_cb
, &ac
);
998 *len
= (ac
.count
* sizeof(struct iwinfo_assoclist_entry
));
1005 int nl80211_get_txpwrlist(const char *ifname
, char *buf
, int *len
)
1007 int ch_cur
, ch_cmp
, bands_remain
, freqs_remain
;
1008 int dbm_max
= -1, dbm_cur
, dbm_cnt
;
1009 struct nl80211_msg_conveyor
*req
, *res
;
1010 struct nlattr
*bands
[NL80211_BAND_ATTR_MAX
+ 1];
1011 struct nlattr
*freqs
[NL80211_FREQUENCY_ATTR_MAX
+ 1];
1012 struct nlattr
*band
, *freq
;
1013 struct iwinfo_txpwrlist_entry entry
;
1015 static struct nla_policy freq_policy
[NL80211_FREQUENCY_ATTR_MAX
+ 1] = {
1016 [NL80211_FREQUENCY_ATTR_FREQ
] = { .type
= NLA_U32
},
1017 [NL80211_FREQUENCY_ATTR_DISABLED
] = { .type
= NLA_FLAG
},
1018 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN
] = { .type
= NLA_FLAG
},
1019 [NL80211_FREQUENCY_ATTR_NO_IBSS
] = { .type
= NLA_FLAG
},
1020 [NL80211_FREQUENCY_ATTR_RADAR
] = { .type
= NLA_FLAG
},
1021 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER
] = { .type
= NLA_U32
},
1024 if( nl80211_get_channel(ifname
, &ch_cur
) )
1027 req
= nl80211_msg(ifname
, NL80211_CMD_GET_WIPHY
, 0);
1030 res
= nl80211_send(req
);
1033 nla_for_each_nested(band
,
1034 res
->attr
[NL80211_ATTR_WIPHY_BANDS
], bands_remain
)
1036 nla_parse(bands
, NL80211_BAND_ATTR_MAX
, nla_data(band
),
1037 nla_len(band
), NULL
);
1039 nla_for_each_nested(freq
,
1040 bands
[NL80211_BAND_ATTR_FREQS
], freqs_remain
)
1042 nla_parse(freqs
, NL80211_FREQUENCY_ATTR_MAX
,
1043 nla_data(freq
), nla_len(freq
), freq_policy
);
1045 ch_cmp
= nl80211_freq2channel(
1046 nla_get_u32(freqs
[NL80211_FREQUENCY_ATTR_FREQ
]));
1048 if( (!ch_cur
|| (ch_cmp
== ch_cur
)) &&
1049 freqs
[NL80211_FREQUENCY_ATTR_MAX_TX_POWER
] )
1051 dbm_max
= (int)(0.01 * nla_get_u32(
1052 freqs
[NL80211_FREQUENCY_ATTR_MAX_TX_POWER
]));
1066 for( dbm_cur
= 0, dbm_cnt
= 0;
1068 dbm_cur
+= 2, dbm_cnt
++ )
1070 entry
.dbm
= dbm_cur
;
1071 entry
.mw
= wext_dbm2mw(dbm_cur
);
1073 memcpy(&buf
[dbm_cnt
* sizeof(entry
)], &entry
, sizeof(entry
));
1076 entry
.dbm
= dbm_max
;
1077 entry
.mw
= wext_dbm2mw(dbm_max
);
1079 memcpy(&buf
[dbm_cnt
* sizeof(entry
)], &entry
, sizeof(entry
));
1082 *len
= dbm_cnt
* sizeof(entry
);
1089 static void nl80211_get_scancrypto(const char *spec
,
1090 struct iwinfo_crypto_entry
*c
)
1092 if( strstr(spec
, "OPEN") )
1100 if( strstr(spec
, "WPA2-") && strstr(spec
, "WPA-") )
1103 else if( strstr(spec
, "WPA2") )
1106 else if( strstr(spec
, "WPA") )
1109 else if( strstr(spec
, "WEP") )
1110 c
->auth_algs
= IWINFO_AUTH_OPEN
| IWINFO_AUTH_SHARED
;
1113 if( strstr(spec
, "PSK") )
1114 c
->auth_suites
|= IWINFO_KMGMT_PSK
;
1116 if( strstr(spec
, "802.1X") || strstr(spec
, "EAP") )
1117 c
->auth_suites
|= IWINFO_KMGMT_8021x
;
1119 if( strstr(spec
, "WPA-NONE") )
1120 c
->auth_suites
|= IWINFO_KMGMT_NONE
;
1123 if( strstr(spec
, "TKIP") )
1124 c
->pair_ciphers
|= IWINFO_CIPHER_TKIP
;
1126 if( strstr(spec
, "CCMP") )
1127 c
->pair_ciphers
|= IWINFO_CIPHER_CCMP
;
1129 if( strstr(spec
, "WEP-40") )
1130 c
->pair_ciphers
|= IWINFO_CIPHER_WEP40
;
1132 if( strstr(spec
, "WEP-104") )
1133 c
->pair_ciphers
|= IWINFO_CIPHER_WEP104
;
1135 c
->group_ciphers
= c
->pair_ciphers
;
1139 int nl80211_get_scanlist(const char *ifname
, char *buf
, int *len
)
1141 int freq
, rssi
, qmax
, count
;
1144 char ssid
[128] = { 0 };
1145 char bssid
[18] = { 0 };
1146 char cipher
[256] = { 0 };
1148 /* Got a radioX pseudo interface, find some interface on it or create one */
1149 if( !strncmp(ifname
, "radio", 5) )
1151 /* Reuse existing interface */
1152 if( (res
= nl80211_phy2ifname(ifname
)) != NULL
)
1154 return nl80211_get_scanlist(res
, buf
, len
);
1157 /* Need to spawn a temporary iface for scanning */
1158 else if( (res
= nl80211_add_tempif(ifname
)) != NULL
)
1160 count
= nl80211_get_scanlist(res
, buf
, len
);
1161 nl80211_del_tempif(res
);
1166 struct iwinfo_scanlist_entry
*e
= (struct iwinfo_scanlist_entry
*)buf
;
1168 /* WPA supplicant */
1169 if( (res
= nl80211_wpasupp_info(ifname
, "SCAN")) &&
1170 !strcmp(res
, "OK\n") )
1174 if( (res
= nl80211_wpasupp_info(ifname
, "SCAN_RESULTS")) )
1176 nl80211_get_quality_max(ifname
, &qmax
);
1178 /* skip header line */
1179 while( *res
++ != '\n' );
1183 while( sscanf(res
, "%17s %d %d %255s %127[^\n]\n",
1184 bssid
, &freq
, &rssi
, cipher
, ssid
) > 0 )
1187 e
->mac
[0] = strtol(&bssid
[0], NULL
, 16);
1188 e
->mac
[1] = strtol(&bssid
[3], NULL
, 16);
1189 e
->mac
[2] = strtol(&bssid
[6], NULL
, 16);
1190 e
->mac
[3] = strtol(&bssid
[9], NULL
, 16);
1191 e
->mac
[4] = strtol(&bssid
[12], NULL
, 16);
1192 e
->mac
[5] = strtol(&bssid
[15], NULL
, 16);
1195 memcpy(e
->ssid
, ssid
,
1196 min(strlen(ssid
), sizeof(e
->ssid
) - 1));
1198 /* Mode (assume master) */
1199 sprintf((char *)e
->mode
, "Master");
1202 e
->channel
= nl80211_freq2channel(freq
);
1210 /* The cfg80211 wext compat layer assumes a signal range
1211 * of -110 dBm to -40 dBm, the quality value is derived
1212 * by adding 110 to the signal level */
1215 else if( rssi
> -40 )
1218 e
->quality
= (rssi
+ 110);
1226 e
->quality_max
= qmax
;
1229 nl80211_get_scancrypto(cipher
, &e
->crypto
);
1231 /* advance to next line */
1232 while( *res
&& *res
++ != '\n' );
1238 *len
= count
* sizeof(struct iwinfo_scanlist_entry
);
1246 if( (res
= nl80211_ifname2phy(ifname
)) != NULL
)
1248 /* Got a temp interface, don't create yet another one */
1249 if( !strncmp(ifname
, "tmp.", 4) )
1251 sprintf(cmd
, "ifconfig %s up 2>/dev/null", ifname
);
1252 if( WEXITSTATUS(system(cmd
)) )
1255 wext_get_scanlist(ifname
, buf
, len
);
1257 sprintf(cmd
, "ifconfig %s down 2>/dev/null", ifname
);
1258 (void) WEXITSTATUS(system(cmd
));
1263 /* Spawn a new scan interface */
1266 sprintf(cmd
, "ifconfig %s down 2>/dev/null", ifname
);
1267 if( WEXITSTATUS(system(cmd
)) )
1270 sprintf(cmd
, "iw phy %s interface add scan.%s "
1271 "type station 2>/dev/null", res
, ifname
);
1272 if( WEXITSTATUS(system(cmd
)) )
1275 sprintf(cmd
, "ifconfig scan.%s up 2>/dev/null", ifname
);
1276 if( WEXITSTATUS(system(cmd
)) )
1279 sprintf(cmd
, "scan.%s", ifname
);
1280 wext_get_scanlist(cmd
, buf
, len
);
1283 sprintf(cmd
, "ifconfig scan.%s down 2>/dev/null", ifname
);
1284 (void) WEXITSTATUS(system(cmd
));
1286 sprintf(cmd
, "iw dev scan.%s del 2>/dev/null", ifname
);
1287 (void) WEXITSTATUS(system(cmd
));
1289 sprintf(cmd
, "ifconfig %s up 2>/dev/null", ifname
);
1290 (void) WEXITSTATUS(system(cmd
));
1292 sprintf(cmd
, "killall -HUP hostapd 2>/dev/null");
1293 (void) WEXITSTATUS(system(cmd
));
1303 int nl80211_get_freqlist(const char *ifname
, char *buf
, int *len
)
1305 int count
= 0, bands_remain
, freqs_remain
;
1306 struct nl80211_msg_conveyor
*req
, *res
;
1307 struct nlattr
*bands
[NL80211_BAND_ATTR_MAX
+ 1];
1308 struct nlattr
*freqs
[NL80211_FREQUENCY_ATTR_MAX
+ 1];
1309 struct nlattr
*band
, *freq
;
1310 struct iwinfo_freqlist_entry
*e
= (struct iwinfo_freqlist_entry
*)buf
;
1312 req
= nl80211_msg(ifname
, NL80211_CMD_GET_WIPHY
, 0);
1315 res
= nl80211_send(req
);
1318 nla_for_each_nested(band
,
1319 res
->attr
[NL80211_ATTR_WIPHY_BANDS
], bands_remain
)
1321 nla_parse(bands
, NL80211_BAND_ATTR_MAX
, nla_data(band
),
1322 nla_len(band
), NULL
);
1324 nla_for_each_nested(freq
,
1325 bands
[NL80211_BAND_ATTR_FREQS
], freqs_remain
)
1327 nla_parse(freqs
, NL80211_FREQUENCY_ATTR_MAX
,
1328 nla_data(freq
), nla_len(freq
), NULL
);
1330 if( !freqs
[NL80211_FREQUENCY_ATTR_FREQ
] ||
1331 freqs
[NL80211_FREQUENCY_ATTR_DISABLED
] )
1334 e
->mhz
= nla_get_u32(freqs
[NL80211_FREQUENCY_ATTR_FREQ
]);
1335 e
->channel
= nl80211_freq2channel(e
->mhz
);
1338 freqs
[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN
] ||
1339 freqs
[NL80211_FREQUENCY_ATTR_NO_IBSS
] ||
1340 freqs
[NL80211_FREQUENCY_ATTR_RADAR
]
1354 *len
= count
* sizeof(struct iwinfo_freqlist_entry
);
1361 int nl80211_get_country(const char *ifname
, char *buf
)
1364 struct nl80211_msg_conveyor
*req
, *res
;
1366 req
= nl80211_msg(ifname
, NL80211_CMD_GET_REG
, 0);
1369 res
= nl80211_send(req
);
1372 if( res
->attr
[NL80211_ATTR_REG_ALPHA2
] )
1374 memcpy(buf
, nla_data(res
->attr
[NL80211_ATTR_REG_ALPHA2
]), 2);
1385 int nl80211_get_countrylist(const char *ifname
, char *buf
, int *len
)
1388 struct iwinfo_iso3166_label
*l
;
1389 struct iwinfo_country_entry
*e
= (struct iwinfo_country_entry
*)buf
;
1391 for( l
= ISO3166_Names
, count
= 0; l
->iso3166
; l
++, e
++, count
++ )
1393 e
->iso3166
= l
->iso3166
;
1394 e
->ccode
[0] = (l
->iso3166
/ 256);
1395 e
->ccode
[1] = (l
->iso3166
% 256);
1398 *len
= (count
* sizeof(struct iwinfo_country_entry
));
1402 int nl80211_get_hwmodelist(const char *ifname
, int *buf
)
1404 int bands_remain
, freqs_remain
;
1405 struct nl80211_msg_conveyor
*req
, *res
;
1406 struct nlattr
*bands
[NL80211_BAND_ATTR_MAX
+ 1];
1407 struct nlattr
*freqs
[NL80211_FREQUENCY_ATTR_MAX
+ 1];
1408 struct nlattr
*band
, *freq
;
1411 req
= nl80211_msg(ifname
, NL80211_CMD_GET_WIPHY
, 0);
1414 res
= nl80211_send(req
);
1417 nla_for_each_nested(band
,
1418 res
->attr
[NL80211_ATTR_WIPHY_BANDS
], bands_remain
)
1420 nla_parse(bands
, NL80211_BAND_ATTR_MAX
, nla_data(band
),
1421 nla_len(band
), NULL
);
1423 if( bands
[NL80211_BAND_ATTR_HT_CAPA
] )
1424 caps
= nla_get_u16(bands
[NL80211_BAND_ATTR_HT_CAPA
]);
1426 /* Treat HT20/HT40 as 11n */
1427 if( caps
& (1 << 1) )
1428 *buf
|= IWINFO_80211_N
;
1430 nla_for_each_nested(freq
,
1431 bands
[NL80211_BAND_ATTR_FREQS
], freqs_remain
)
1433 nla_parse(freqs
, NL80211_FREQUENCY_ATTR_MAX
,
1434 nla_data(freq
), nla_len(freq
), NULL
);
1436 if( !freqs
[NL80211_FREQUENCY_ATTR_FREQ
] )
1439 if( nla_get_u32(freqs
[NL80211_FREQUENCY_ATTR_FREQ
]) < 2485 )
1441 *buf
|= IWINFO_80211_B
;
1442 *buf
|= IWINFO_80211_G
;
1446 *buf
|= IWINFO_80211_A
;
1455 return *buf
? 0 : -1;
1458 int nl80211_get_mbssid_support(const char *ifname
, int *buf
)
1460 /* We assume that multi bssid is always possible */