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
)
111 static void nl80211_free(struct nl80211_msg_conveyor
*cv
)
126 static struct nl80211_msg_conveyor
* nl80211_msg(const char *ifname
, int cmd
, int flags
)
128 static struct nl80211_msg_conveyor cv
;
130 int ifidx
= -1, phyidx
= -1;
131 struct nl_msg
*req
= NULL
;
132 struct nl_cb
*cb
= NULL
;
134 if (nl80211_init() < 0)
137 if (!strncmp(ifname
, "phy", 3))
138 phyidx
= atoi(&ifname
[3]);
139 else if (!strncmp(ifname
, "radio", 5))
140 phyidx
= atoi(&ifname
[5]);
141 else if (!strncmp(ifname
, "mon.", 4))
142 ifidx
= if_nametoindex(&ifname
[4]);
144 ifidx
= if_nametoindex(ifname
);
146 if ((ifidx
< 0) && (phyidx
< 0))
153 cb
= nl_cb_alloc(NL_CB_DEFAULT
);
157 genlmsg_put(req
, 0, 0, genl_family_get_id(nls
->nl80211
), 0,
161 NLA_PUT_U32(req
, NL80211_ATTR_IFINDEX
, ifidx
);
164 NLA_PUT_U32(req
, NL80211_ATTR_WIPHY
, phyidx
);
182 static struct nl80211_msg_conveyor
* nl80211_send(
183 struct nl80211_msg_conveyor
*cv
,
184 int (*cb_func
)(struct nl_msg
*, void *), void *cb_arg
186 static struct nl80211_msg_conveyor rcv
;
190 nl_cb_set(cv
->cb
, NL_CB_VALID
, NL_CB_CUSTOM
, cb_func
, cb_arg
);
192 nl_cb_set(cv
->cb
, NL_CB_VALID
, NL_CB_CUSTOM
, nl80211_msg_response
, &rcv
);
194 if (nl_send_auto_complete(nls
->nl_sock
, cv
->msg
) < 0)
197 nl_cb_err(cv
->cb
, NL_CB_CUSTOM
, nl80211_msg_error
, &err
);
198 nl_cb_set(cv
->cb
, NL_CB_FINISH
, NL_CB_CUSTOM
, nl80211_msg_finish
, &err
);
199 nl_cb_set(cv
->cb
, NL_CB_ACK
, NL_CB_CUSTOM
, nl80211_msg_ack
, &err
);
202 nl_recvmsgs(nls
->nl_sock
, cv
->cb
);
213 static struct nlattr
** nl80211_parse(struct nl_msg
*msg
)
215 struct genlmsghdr
*gnlh
= nlmsg_data(nlmsg_hdr(msg
));
216 static struct nlattr
*attr
[NL80211_ATTR_MAX
+ 1];
218 nla_parse(attr
, NL80211_ATTR_MAX
, genlmsg_attrdata(gnlh
, 0),
219 genlmsg_attrlen(gnlh
, 0), NULL
);
224 static int nl80211_freq2channel(int freq
)
230 return (freq
- 2407) / 5;
232 return (freq
/ 5) - 1000;
235 static char * nl80211_getval(const char *ifname
, const char *buf
, const char *key
)
238 char lkey
[64] = { 0 };
239 const char *ln
= buf
;
240 static char lval
[256] = { 0 };
242 int matched_if
= ifname
? 0 : 1;
245 for( i
= 0, len
= strlen(buf
); i
< len
; i
++ )
247 if (!lkey
[0] && (buf
[i
] == ' ' || buf
[i
] == '\t'))
251 else if (!lkey
[0] && (buf
[i
] == '='))
253 if ((&buf
[i
] - ln
) > 0)
254 memcpy(lkey
, ln
, min(sizeof(lkey
) - 1, &buf
[i
] - ln
));
256 else if (buf
[i
] == '\n')
260 memcpy(lval
, ln
+ strlen(lkey
) + 1,
261 min(sizeof(lval
) - 1, &buf
[i
] - ln
- strlen(lkey
) - 1));
263 if ((ifname
!= NULL
) &&
264 (!strcmp(lkey
, "interface") || !strcmp(lkey
, "bss")) )
266 matched_if
= !strcmp(lval
, ifname
);
268 else if (matched_if
&& !strcmp(lkey
, key
))
275 memset(lkey
, 0, sizeof(lkey
));
276 memset(lval
, 0, sizeof(lval
));
283 static int nl80211_ifname2phy_cb(struct nl_msg
*msg
, void *arg
)
286 struct nlattr
**attr
= nl80211_parse(msg
);
288 if (attr
[NL80211_ATTR_WIPHY_NAME
])
289 sprintf(buf
, "%s", nla_data(attr
[NL80211_ATTR_WIPHY_NAME
]));
296 static char * nl80211_ifname2phy(const char *ifname
)
298 static char phy
[32] = { 0 };
299 struct nl80211_msg_conveyor
*req
;
301 memset(phy
, 0, sizeof(phy
));
303 req
= nl80211_msg(ifname
, NL80211_CMD_GET_WIPHY
, 0);
306 nl80211_send(req
, nl80211_ifname2phy_cb
, phy
);
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]);
457 memset(nif
, 0, sizeof(nif
));
461 if ((d
= opendir("/sys/class/net")) != NULL
)
463 while( (e
= readdir(d
)) != NULL
)
465 snprintf(buffer
, sizeof(buffer
),
466 "/sys/class/net/%s/phy80211/index", e
->d_name
);
468 if (nl80211_readint(buffer
) == phyidx
)
470 snprintf(buffer
, sizeof(buffer
),
471 "/sys/class/net/%s/ifindex", e
->d_name
);
473 if( (cifidx
= nl80211_readint(buffer
)) >= 0 &&
474 ((ifidx
< 0) || (cifidx
< ifidx
)) )
477 strncpy(nif
, e
->d_name
, sizeof(nif
));
486 return nif
[0] ? nif
: NULL
;
489 static char * nl80211_ifadd(const char *ifname
)
493 static char nif
[IFNAMSIZ
] = { 0 };
494 struct nl80211_msg_conveyor
*req
, *res
;
496 req
= nl80211_msg(ifname
, NL80211_CMD_NEW_INTERFACE
, 0);
499 snprintf(nif
, sizeof(nif
), "tmp.%s", ifname
);
501 NLA_PUT_STRING(req
->msg
, NL80211_ATTR_IFNAME
, nif
);
502 NLA_PUT_U32(req
->msg
, NL80211_ATTR_IFTYPE
, NL80211_IFTYPE_STATION
);
504 nl80211_send(req
, NULL
, NULL
);
515 static void nl80211_ifdel(const char *ifname
)
517 struct nl80211_msg_conveyor
*req
;
519 req
= nl80211_msg(ifname
, NL80211_CMD_DEL_INTERFACE
, 0);
522 NLA_PUT_STRING(req
->msg
, NL80211_ATTR_IFNAME
, ifname
);
524 nl80211_send(req
, NULL
, NULL
);
531 static void nl80211_hostapd_hup(const char *ifname
)
535 char *phy
= nl80211_ifname2phy(ifname
);
539 snprintf(buf
, sizeof(buf
), "/var/run/wifi-%s.pid", phy
);
540 if ((fd
= open(buf
, O_RDONLY
)) > 0)
542 if (read(fd
, buf
, sizeof(buf
)) > 0)
554 int nl80211_probe(const char *ifname
)
556 return !!nl80211_ifname2phy(ifname
);
559 void nl80211_close(void)
564 nl_socket_free(nls
->nl_sock
);
567 nl_cache_free(nls
->nl_cache
);
574 int nl80211_get_mode(const char *ifname
, char *buf
)
576 return wext_get_mode(ifname
, buf
);
579 int nl80211_get_ssid(const char *ifname
, char *buf
)
583 if (!wext_get_ssid(ifname
, buf
))
587 else if( (ssid
= nl80211_hostapd_info(ifname
)) &&
588 (ssid
= nl80211_getval(ifname
, ssid
, "ssid")) )
590 memcpy(buf
, ssid
, strlen(ssid
));
597 int nl80211_get_bssid(const char *ifname
, char *buf
)
600 unsigned char mac
[6];
602 if (!wext_get_bssid(ifname
, buf
))
606 else if((bssid
= nl80211_hostapd_info(ifname
)) &&
607 (bssid
= nl80211_getval(ifname
, bssid
, "bssid")))
609 mac
[0] = strtol(&bssid
[0], NULL
, 16);
610 mac
[1] = strtol(&bssid
[3], NULL
, 16);
611 mac
[2] = strtol(&bssid
[6], NULL
, 16);
612 mac
[3] = strtol(&bssid
[9], NULL
, 16);
613 mac
[4] = strtol(&bssid
[12], NULL
, 16);
614 mac
[5] = strtol(&bssid
[15], NULL
, 16);
616 sprintf(buf
, "%02X:%02X:%02X:%02X:%02X:%02X",
617 mac
[0], mac
[1], mac
[2], mac
[3], mac
[4], mac
[5]);
625 int nl80211_get_channel(const char *ifname
, int *buf
)
629 if (!wext_get_channel(ifname
, buf
))
632 else if ((first
= nl80211_phy2ifname(nl80211_ifname2phy(ifname
))) != NULL
)
633 return wext_get_channel(first
, buf
);
638 int nl80211_get_frequency(const char *ifname
, int *buf
)
642 if (!wext_get_frequency(ifname
, buf
))
645 else if ((first
= nl80211_phy2ifname(nl80211_ifname2phy(ifname
))) != NULL
)
646 return wext_get_frequency(first
, buf
);
651 int nl80211_get_txpower(const char *ifname
, int *buf
)
653 return wext_get_txpower(ifname
, buf
);
657 static int nl80211_fill_signal_cb(struct nl_msg
*msg
, void *arg
)
661 struct nl80211_rssi_rate
*rr
= arg
;
662 struct nlattr
**attr
= nl80211_parse(msg
);
663 struct nlattr
*sinfo
[NL80211_STA_INFO_MAX
+ 1];
664 struct nlattr
*rinfo
[NL80211_RATE_INFO_MAX
+ 1];
666 static struct nla_policy stats_policy
[NL80211_STA_INFO_MAX
+ 1] = {
667 [NL80211_STA_INFO_INACTIVE_TIME
] = { .type
= NLA_U32
},
668 [NL80211_STA_INFO_RX_BYTES
] = { .type
= NLA_U32
},
669 [NL80211_STA_INFO_TX_BYTES
] = { .type
= NLA_U32
},
670 [NL80211_STA_INFO_RX_PACKETS
] = { .type
= NLA_U32
},
671 [NL80211_STA_INFO_TX_PACKETS
] = { .type
= NLA_U32
},
672 [NL80211_STA_INFO_SIGNAL
] = { .type
= NLA_U8
},
673 [NL80211_STA_INFO_TX_BITRATE
] = { .type
= NLA_NESTED
},
674 [NL80211_STA_INFO_LLID
] = { .type
= NLA_U16
},
675 [NL80211_STA_INFO_PLID
] = { .type
= NLA_U16
},
676 [NL80211_STA_INFO_PLINK_STATE
] = { .type
= NLA_U8
},
679 static struct nla_policy rate_policy
[NL80211_RATE_INFO_MAX
+ 1] = {
680 [NL80211_RATE_INFO_BITRATE
] = { .type
= NLA_U16
},
681 [NL80211_RATE_INFO_MCS
] = { .type
= NLA_U8
},
682 [NL80211_RATE_INFO_40_MHZ_WIDTH
] = { .type
= NLA_FLAG
},
683 [NL80211_RATE_INFO_SHORT_GI
] = { .type
= NLA_FLAG
},
686 if (attr
[NL80211_ATTR_STA_INFO
])
688 if( !nla_parse_nested(sinfo
, NL80211_STA_INFO_MAX
,
689 attr
[NL80211_ATTR_STA_INFO
], stats_policy
) )
691 if (sinfo
[NL80211_STA_INFO_SIGNAL
])
693 dbm
= nla_get_u8(sinfo
[NL80211_STA_INFO_SIGNAL
]);
694 rr
->rssi
= rr
->rssi
? (int8_t)((rr
->rssi
+ dbm
) / 2) : dbm
;
697 if (sinfo
[NL80211_STA_INFO_TX_BITRATE
])
699 if( !nla_parse_nested(rinfo
, NL80211_RATE_INFO_MAX
,
700 sinfo
[NL80211_STA_INFO_TX_BITRATE
], rate_policy
) )
702 if (rinfo
[NL80211_RATE_INFO_BITRATE
])
704 mbit
= nla_get_u16(rinfo
[NL80211_RATE_INFO_BITRATE
]);
706 ? (int16_t)((rr
->rate
+ mbit
) / 2) : mbit
;
716 static void nl80211_fill_signal(const char *ifname
, struct nl80211_rssi_rate
*r
)
720 struct nl80211_msg_conveyor
*req
;
725 if ((d
= opendir("/sys/class/net")) != NULL
)
727 while ((de
= readdir(d
)) != NULL
)
729 if (!strncmp(de
->d_name
, ifname
, strlen(ifname
)) &&
730 (!de
->d_name
[strlen(ifname
)] ||
731 !strncmp(&de
->d_name
[strlen(ifname
)], ".sta", 4)))
733 req
= nl80211_msg(de
->d_name
, NL80211_CMD_GET_STATION
,
738 nl80211_send(req
, nl80211_fill_signal_cb
, r
);
748 int nl80211_get_bitrate(const char *ifname
, int *buf
)
750 struct nl80211_rssi_rate rr
;
752 if (!wext_get_bitrate(ifname
, buf
))
755 nl80211_fill_signal(ifname
, &rr
);
759 *buf
= (rr
.rate
* 100);
766 int nl80211_get_signal(const char *ifname
, int *buf
)
768 struct nl80211_rssi_rate rr
;
770 if (!wext_get_signal(ifname
, buf
))
773 nl80211_fill_signal(ifname
, &rr
);
784 static int nl80211_get_noise_cb(struct nl_msg
*msg
, void *arg
)
787 struct nlattr
**tb
= nl80211_parse(msg
);
788 struct nlattr
*si
[NL80211_SURVEY_INFO_MAX
+ 1];
790 static struct nla_policy sp
[NL80211_SURVEY_INFO_MAX
+ 1] = {
791 [NL80211_SURVEY_INFO_FREQUENCY
] = { .type
= NLA_U32
},
792 [NL80211_SURVEY_INFO_NOISE
] = { .type
= NLA_U8
},
795 if (!tb
[NL80211_ATTR_SURVEY_INFO
])
798 if (nla_parse_nested(si
, NL80211_SURVEY_INFO_MAX
,
799 tb
[NL80211_ATTR_SURVEY_INFO
], sp
))
802 if (!si
[NL80211_SURVEY_INFO_NOISE
])
805 if (!*noise
|| si
[NL80211_SURVEY_INFO_IN_USE
])
806 *noise
= (int8_t)nla_get_u8(si
[NL80211_SURVEY_INFO_NOISE
]);
812 int nl80211_get_noise(const char *ifname
, int *buf
)
815 struct nl80211_msg_conveyor
*req
;
817 req
= nl80211_msg(ifname
, NL80211_CMD_GET_SURVEY
, NLM_F_DUMP
);
822 nl80211_send(req
, nl80211_get_noise_cb
, &noise
);
835 int nl80211_get_quality(const char *ifname
, int *buf
)
839 if (wext_get_quality(ifname
, buf
))
843 if (!nl80211_get_signal(ifname
, &signal
))
845 /* A positive signal level is usually just a quality
846 * value, pass through as-is */
852 /* The cfg80211 wext compat layer assumes a signal range
853 * of -110 dBm to -40 dBm, the quality value is derived
854 * by adding 110 to the signal level */
859 else if (signal
> -40)
862 *buf
= (signal
+ 110);
870 int nl80211_get_quality_max(const char *ifname
, int *buf
)
872 if (wext_get_quality_max(ifname
, buf
))
873 /* The cfg80211 wext compat layer assumes a maximum
880 int nl80211_get_encryption(const char *ifname
, char *buf
)
885 struct iwinfo_crypto_entry
*c
= (struct iwinfo_crypto_entry
*)buf
;
888 if( (res
= nl80211_wpactl_info(ifname
, "STATUS", NULL
)) &&
889 (val
= nl80211_getval(NULL
, res
, "pairwise_cipher")) )
892 if (strstr(val
, "WEP"))
894 if (strstr(val
, "WEP-40"))
895 c
->pair_ciphers
|= IWINFO_CIPHER_WEP40
;
897 else if (strstr(val
, "WEP-104"))
898 c
->pair_ciphers
|= IWINFO_CIPHER_WEP104
;
901 c
->group_ciphers
= c
->pair_ciphers
;
903 c
->auth_suites
|= IWINFO_KMGMT_NONE
;
904 c
->auth_algs
|= IWINFO_AUTH_OPEN
; /* XXX: assumption */
910 if (strstr(val
, "TKIP"))
911 c
->pair_ciphers
|= IWINFO_CIPHER_TKIP
;
913 else if (strstr(val
, "CCMP"))
914 c
->pair_ciphers
|= IWINFO_CIPHER_CCMP
;
916 else if (strstr(val
, "NONE"))
917 c
->pair_ciphers
|= IWINFO_CIPHER_NONE
;
919 else if (strstr(val
, "WEP-40"))
920 c
->pair_ciphers
|= IWINFO_CIPHER_WEP40
;
922 else if (strstr(val
, "WEP-104"))
923 c
->pair_ciphers
|= IWINFO_CIPHER_WEP104
;
926 if ((val
= nl80211_getval(NULL
, res
, "group_cipher")))
928 if (strstr(val
, "TKIP"))
929 c
->group_ciphers
|= IWINFO_CIPHER_TKIP
;
931 else if (strstr(val
, "CCMP"))
932 c
->group_ciphers
|= IWINFO_CIPHER_CCMP
;
934 else if (strstr(val
, "NONE"))
935 c
->group_ciphers
|= IWINFO_CIPHER_NONE
;
937 else if (strstr(val
, "WEP-40"))
938 c
->group_ciphers
|= IWINFO_CIPHER_WEP40
;
940 else if (strstr(val
, "WEP-104"))
941 c
->group_ciphers
|= IWINFO_CIPHER_WEP104
;
945 if ((val
= nl80211_getval(NULL
, res
, "key_mgmt")))
947 if (strstr(val
, "WPA2"))
950 else if (strstr(val
, "WPA"))
954 if (strstr(val
, "PSK"))
955 c
->auth_suites
|= IWINFO_KMGMT_PSK
;
957 else if (strstr(val
, "EAP") || strstr(val
, "802.1X"))
958 c
->auth_suites
|= IWINFO_KMGMT_8021x
;
960 else if (strstr(val
, "NONE"))
961 c
->auth_suites
|= IWINFO_KMGMT_NONE
;
964 c
->enabled
= (c
->wpa_version
&& c
->auth_suites
) ? 1 : 0;
971 else if ((res
= nl80211_hostapd_info(ifname
)))
973 if ((val
= nl80211_getval(ifname
, res
, "wpa")) != NULL
)
974 c
->wpa_version
= atoi(val
);
976 val
= nl80211_getval(ifname
, res
, "wpa_key_mgmt");
978 if (!val
|| strstr(val
, "PSK"))
979 c
->auth_suites
|= IWINFO_KMGMT_PSK
;
981 if (val
&& strstr(val
, "EAP"))
982 c
->auth_suites
|= IWINFO_KMGMT_8021x
;
984 if (val
&& strstr(val
, "NONE"))
985 c
->auth_suites
|= IWINFO_KMGMT_NONE
;
987 if ((val
= nl80211_getval(ifname
, res
, "wpa_pairwise")) != NULL
)
989 if (strstr(val
, "TKIP"))
990 c
->pair_ciphers
|= IWINFO_CIPHER_TKIP
;
992 if (strstr(val
, "CCMP"))
993 c
->pair_ciphers
|= IWINFO_CIPHER_CCMP
;
995 if (strstr(val
, "NONE"))
996 c
->pair_ciphers
|= IWINFO_CIPHER_NONE
;
999 if ((val
= nl80211_getval(ifname
, res
, "auth_algs")) != NULL
)
1003 c
->auth_algs
|= IWINFO_AUTH_OPEN
;
1007 c
->auth_algs
|= IWINFO_AUTH_SHARED
;
1011 c
->auth_algs
|= IWINFO_AUTH_OPEN
;
1012 c
->auth_algs
|= IWINFO_AUTH_SHARED
;
1019 for( i
= 0; i
< 4; i
++ )
1021 snprintf(k
, sizeof(k
), "wep_key%d", i
);
1023 if ((val
= nl80211_getval(ifname
, res
, k
)))
1025 if ((strlen(val
) == 5) || (strlen(val
) == 10))
1026 c
->pair_ciphers
|= IWINFO_CIPHER_WEP40
;
1028 else if ((strlen(val
) == 13) || (strlen(val
) == 26))
1029 c
->pair_ciphers
|= IWINFO_CIPHER_WEP104
;
1034 c
->group_ciphers
= c
->pair_ciphers
;
1035 c
->enabled
= (c
->wpa_version
|| c
->pair_ciphers
) ? 1 : 0;
1044 static int nl80211_get_assoclist_cb(struct nl_msg
*msg
, void *arg
)
1046 struct nl80211_array_buf
*arr
= arg
;
1047 struct iwinfo_assoclist_entry
*e
= arr
->buf
;
1048 struct nlattr
**attr
= nl80211_parse(msg
);
1049 struct nlattr
*sinfo
[NL80211_STA_INFO_MAX
+ 1];
1051 static struct nla_policy stats_policy
[NL80211_STA_INFO_MAX
+ 1] = {
1052 [NL80211_STA_INFO_INACTIVE_TIME
] = { .type
= NLA_U32
},
1053 [NL80211_STA_INFO_RX_BYTES
] = { .type
= NLA_U32
},
1054 [NL80211_STA_INFO_TX_BYTES
] = { .type
= NLA_U32
},
1055 [NL80211_STA_INFO_RX_PACKETS
] = { .type
= NLA_U32
},
1056 [NL80211_STA_INFO_TX_PACKETS
] = { .type
= NLA_U32
},
1057 [NL80211_STA_INFO_SIGNAL
] = { .type
= NLA_U8
},
1058 [NL80211_STA_INFO_TX_BITRATE
] = { .type
= NLA_NESTED
},
1059 [NL80211_STA_INFO_LLID
] = { .type
= NLA_U16
},
1060 [NL80211_STA_INFO_PLID
] = { .type
= NLA_U16
},
1061 [NL80211_STA_INFO_PLINK_STATE
] = { .type
= NLA_U8
},
1064 /* advance to end of array */
1067 if (attr
[NL80211_ATTR_MAC
])
1068 memcpy(e
->mac
, nla_data(attr
[NL80211_ATTR_MAC
]), 6);
1070 if (attr
[NL80211_ATTR_STA_INFO
])
1072 if (!nla_parse_nested(sinfo
, NL80211_STA_INFO_MAX
,
1073 attr
[NL80211_ATTR_STA_INFO
], stats_policy
))
1075 if (sinfo
[NL80211_STA_INFO_SIGNAL
])
1076 e
->signal
= nla_get_u8(sinfo
[NL80211_STA_INFO_SIGNAL
]);
1080 e
->noise
= 0; /* filled in by caller */
1086 int nl80211_get_assoclist(const char *ifname
, char *buf
, int *len
)
1091 struct nl80211_msg_conveyor
*req
;
1092 struct nl80211_array_buf arr
= { .buf
= buf
, .count
= 0 };
1093 struct iwinfo_assoclist_entry
*e
;
1095 if ((d
= opendir("/sys/class/net")) != NULL
)
1097 while ((de
= readdir(d
)) != NULL
)
1099 if (!strncmp(de
->d_name
, ifname
, strlen(ifname
)) &&
1100 (!de
->d_name
[strlen(ifname
)] ||
1101 !strncmp(&de
->d_name
[strlen(ifname
)], ".sta", 4)))
1103 req
= nl80211_msg(de
->d_name
, NL80211_CMD_GET_STATION
,
1108 nl80211_send(req
, nl80211_get_assoclist_cb
, &arr
);
1118 if (!nl80211_get_noise(ifname
, &noise
))
1119 for (i
= 0, e
= arr
.buf
; i
< arr
.count
; i
++, e
++)
1122 *len
= (arr
.count
* sizeof(struct iwinfo_assoclist_entry
));
1129 static int nl80211_get_txpwrlist_cb(struct nl_msg
*msg
, void *arg
)
1132 int ch_cur
, ch_cmp
, bands_remain
, freqs_remain
;
1134 struct nlattr
**attr
= nl80211_parse(msg
);
1135 struct nlattr
*bands
[NL80211_BAND_ATTR_MAX
+ 1];
1136 struct nlattr
*freqs
[NL80211_FREQUENCY_ATTR_MAX
+ 1];
1137 struct nlattr
*band
, *freq
;
1139 static struct nla_policy freq_policy
[NL80211_FREQUENCY_ATTR_MAX
+ 1] = {
1140 [NL80211_FREQUENCY_ATTR_FREQ
] = { .type
= NLA_U32
},
1141 [NL80211_FREQUENCY_ATTR_DISABLED
] = { .type
= NLA_FLAG
},
1142 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN
] = { .type
= NLA_FLAG
},
1143 [NL80211_FREQUENCY_ATTR_NO_IBSS
] = { .type
= NLA_FLAG
},
1144 [NL80211_FREQUENCY_ATTR_RADAR
] = { .type
= NLA_FLAG
},
1145 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER
] = { .type
= NLA_U32
},
1148 ch_cur
= *dbm_max
; /* value int* is initialized with channel by caller */
1151 nla_for_each_nested(band
, attr
[NL80211_ATTR_WIPHY_BANDS
], bands_remain
)
1153 nla_parse(bands
, NL80211_BAND_ATTR_MAX
, nla_data(band
),
1154 nla_len(band
), NULL
);
1156 nla_for_each_nested(freq
,
1157 bands
[NL80211_BAND_ATTR_FREQS
], freqs_remain
)
1159 nla_parse(freqs
, NL80211_FREQUENCY_ATTR_MAX
,
1160 nla_data(freq
), nla_len(freq
), freq_policy
);
1162 ch_cmp
= nl80211_freq2channel(
1163 nla_get_u32(freqs
[NL80211_FREQUENCY_ATTR_FREQ
]));
1165 if( (!ch_cur
|| (ch_cmp
== ch_cur
)) &&
1166 freqs
[NL80211_FREQUENCY_ATTR_MAX_TX_POWER
] )
1168 *dbm_max
= (int)(0.01 * nla_get_u32(
1169 freqs
[NL80211_FREQUENCY_ATTR_MAX_TX_POWER
]));
1179 int nl80211_get_txpwrlist(const char *ifname
, char *buf
, int *len
)
1182 int dbm_max
= -1, dbm_cur
, dbm_cnt
;
1183 struct nl80211_msg_conveyor
*req
;
1184 struct iwinfo_txpwrlist_entry entry
;
1186 if (nl80211_get_channel(ifname
, &ch_cur
))
1189 req
= nl80211_msg(ifname
, NL80211_CMD_GET_WIPHY
, 0);
1192 /* initialize the value pointer with channel for callback */
1195 nl80211_send(req
, nl80211_get_txpwrlist_cb
, &dbm_max
);
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 static int nl80211_get_freqlist_cb(struct nl_msg
*msg
, void *arg
)
1430 int bands_remain
, freqs_remain
;
1432 struct nl80211_array_buf
*arr
= arg
;
1433 struct iwinfo_freqlist_entry
*e
= arr
->buf
;
1435 struct nlattr
**attr
= nl80211_parse(msg
);
1436 struct nlattr
*bands
[NL80211_BAND_ATTR_MAX
+ 1];
1437 struct nlattr
*freqs
[NL80211_FREQUENCY_ATTR_MAX
+ 1];
1438 struct nlattr
*band
, *freq
;
1440 static struct nla_policy freq_policy
[NL80211_FREQUENCY_ATTR_MAX
+ 1] = {
1441 [NL80211_FREQUENCY_ATTR_FREQ
] = { .type
= NLA_U32
},
1442 [NL80211_FREQUENCY_ATTR_DISABLED
] = { .type
= NLA_FLAG
},
1443 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN
] = { .type
= NLA_FLAG
},
1444 [NL80211_FREQUENCY_ATTR_NO_IBSS
] = { .type
= NLA_FLAG
},
1445 [NL80211_FREQUENCY_ATTR_RADAR
] = { .type
= NLA_FLAG
},
1446 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER
] = { .type
= NLA_U32
},
1449 nla_for_each_nested(band
, attr
[NL80211_ATTR_WIPHY_BANDS
], bands_remain
)
1451 nla_parse(bands
, NL80211_BAND_ATTR_MAX
, nla_data(band
),
1452 nla_len(band
), NULL
);
1454 nla_for_each_nested(freq
,
1455 bands
[NL80211_BAND_ATTR_FREQS
], freqs_remain
)
1457 nla_parse(freqs
, NL80211_FREQUENCY_ATTR_MAX
,
1458 nla_data(freq
), nla_len(freq
), NULL
);
1460 if( !freqs
[NL80211_FREQUENCY_ATTR_FREQ
] ||
1461 freqs
[NL80211_FREQUENCY_ATTR_DISABLED
] )
1464 e
->mhz
= nla_get_u32(freqs
[NL80211_FREQUENCY_ATTR_FREQ
]);
1465 e
->channel
= nl80211_freq2channel(e
->mhz
);
1468 freqs
[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN
] ||
1469 freqs
[NL80211_FREQUENCY_ATTR_NO_IBSS
] ||
1470 freqs
[NL80211_FREQUENCY_ATTR_RADAR
]
1481 int nl80211_get_freqlist(const char *ifname
, char *buf
, int *len
)
1483 struct nl80211_msg_conveyor
*req
;
1484 struct nl80211_array_buf arr
= { .buf
= buf
, .count
= 0 };
1486 req
= nl80211_msg(ifname
, NL80211_CMD_GET_WIPHY
, 0);
1489 nl80211_send(req
, nl80211_get_freqlist_cb
, &arr
);
1495 *len
= arr
.count
* sizeof(struct iwinfo_freqlist_entry
);
1502 static int nl80211_get_country_cb(struct nl_msg
*msg
, void *arg
)
1505 struct nlattr
**attr
= nl80211_parse(msg
);
1507 if (attr
[NL80211_ATTR_REG_ALPHA2
])
1508 memcpy(buf
, nla_data(attr
[NL80211_ATTR_REG_ALPHA2
]), 2);
1515 int nl80211_get_country(const char *ifname
, char *buf
)
1518 struct nl80211_msg_conveyor
*req
;
1520 req
= nl80211_msg(ifname
, NL80211_CMD_GET_REG
, 0);
1523 nl80211_send(req
, nl80211_get_country_cb
, buf
);
1533 int nl80211_get_countrylist(const char *ifname
, char *buf
, int *len
)
1536 struct iwinfo_iso3166_label
*l
;
1537 struct iwinfo_country_entry
*e
= (struct iwinfo_country_entry
*)buf
;
1539 for( l
= ISO3166_Names
, count
= 0; l
->iso3166
; l
++, e
++, count
++ )
1541 e
->iso3166
= l
->iso3166
;
1542 e
->ccode
[0] = (l
->iso3166
/ 256);
1543 e
->ccode
[1] = (l
->iso3166
% 256);
1546 *len
= (count
* sizeof(struct iwinfo_country_entry
));
1550 static int nl80211_get_hwmodelist_cb(struct nl_msg
*msg
, void *arg
)
1553 int bands_remain
, freqs_remain
;
1555 struct nlattr
**attr
= nl80211_parse(msg
);
1556 struct nlattr
*bands
[NL80211_BAND_ATTR_MAX
+ 1];
1557 struct nlattr
*freqs
[NL80211_FREQUENCY_ATTR_MAX
+ 1];
1558 struct nlattr
*band
, *freq
;
1562 if (attr
[NL80211_ATTR_WIPHY_BANDS
])
1564 nla_for_each_nested(band
, attr
[NL80211_ATTR_WIPHY_BANDS
], bands_remain
)
1566 nla_parse(bands
, NL80211_BAND_ATTR_MAX
, nla_data(band
),
1567 nla_len(band
), NULL
);
1569 if (bands
[NL80211_BAND_ATTR_HT_CAPA
])
1570 caps
= nla_get_u16(bands
[NL80211_BAND_ATTR_HT_CAPA
]);
1572 /* Treat any nonzero capability as 11n */
1574 *modes
|= IWINFO_80211_N
;
1576 nla_for_each_nested(freq
,
1577 bands
[NL80211_BAND_ATTR_FREQS
], freqs_remain
)
1579 nla_parse(freqs
, NL80211_FREQUENCY_ATTR_MAX
,
1580 nla_data(freq
), nla_len(freq
), NULL
);
1582 if (!freqs
[NL80211_FREQUENCY_ATTR_FREQ
])
1585 if (nla_get_u32(freqs
[NL80211_FREQUENCY_ATTR_FREQ
]) < 2485)
1587 *modes
|= IWINFO_80211_B
;
1588 *modes
|= IWINFO_80211_G
;
1592 *modes
|= IWINFO_80211_A
;
1601 int nl80211_get_hwmodelist(const char *ifname
, int *buf
)
1603 struct nl80211_msg_conveyor
*req
;
1605 req
= nl80211_msg(ifname
, NL80211_CMD_GET_WIPHY
, 0);
1608 nl80211_send(req
, nl80211_get_hwmodelist_cb
, buf
);
1612 return *buf
? 0 : -1;
1615 int nl80211_get_mbssid_support(const char *ifname
, int *buf
)
1617 /* Test whether we can create another interface */
1618 char *nif
= nl80211_ifadd(ifname
);
1622 *buf
= (iwinfo_ifmac(nif
) && iwinfo_ifup(nif
));