diff options
Diffstat (limited to 'contrib/package/iwinfo/src/iwinfo_nl80211.c')
| -rw-r--r-- | contrib/package/iwinfo/src/iwinfo_nl80211.c | 1630 |
1 files changed, 0 insertions, 1630 deletions
diff --git a/contrib/package/iwinfo/src/iwinfo_nl80211.c b/contrib/package/iwinfo/src/iwinfo_nl80211.c deleted file mode 100644 index b3da8384e7..0000000000 --- a/contrib/package/iwinfo/src/iwinfo_nl80211.c +++ /dev/null @@ -1,1630 +0,0 @@ -/* - * iwinfo - Wireless Information Library - NL80211 Backend - * - * Copyright (C) 2010 Jo-Philipp Wich <xm@subsignal.org> - * - * The iwinfo library is free software: you can redistribute it and/or - * modify it under the terms of the GNU General Public License version 2 - * as published by the Free Software Foundation. - * - * The iwinfo library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. - * See the GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with the iwinfo library. If not, see http://www.gnu.org/licenses/. - * - * The signal handling code is derived from the official madwifi tools, - * wlanconfig.c in particular. The encryption property handling was - * inspired by the hostapd madwifi driver. - * - * Parts of this code are derived from the Linux iw utility. - */ - -#include "iwinfo/nl80211.h" -#include "iwinfo/wext.h" - -#define min(x, y) ((x) < (y)) ? (x) : (y) - -static struct nl80211_state *nls = NULL; - -static int nl80211_init(void) -{ - int err, fd; - - if (!nls) - { - nls = malloc(sizeof(struct nl80211_state)); - if (!nls) { - err = -ENOMEM; - goto err; - } - - nls->nl_sock = nl_socket_alloc(); - if (!nls->nl_sock) { - err = -ENOMEM; - goto err; - } - - if( genl_connect(nls->nl_sock)) { - err = -ENOLINK; - goto err; - } - - fd = nl_socket_get_fd(nls->nl_sock); - if (fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC) < 0) - { - err = -EINVAL; - goto err; - } - - if( genl_ctrl_alloc_cache(nls->nl_sock, &nls->nl_cache)) { - err = -ENOMEM; - goto err; - } - - nls->nl80211 = genl_ctrl_search_by_name(nls->nl_cache, "nl80211"); - if (!nls->nl80211) - { - err = -ENOENT; - goto err; - } - } - - return 0; - - -err: - nl80211_close(); - return err; -} - -static int nl80211_msg_error(struct sockaddr_nl *nla, - struct nlmsgerr *err, void *arg) -{ - int *ret = arg; - *ret = err->error; - return NL_STOP; -} - -static int nl80211_msg_finish(struct nl_msg *msg, void *arg) -{ - int *ret = arg; - *ret = 0; - return NL_SKIP; -} - -static int nl80211_msg_ack(struct nl_msg *msg, void *arg) -{ - int *ret = arg; - *ret = 0; - return NL_STOP; -} - -static int nl80211_msg_response(struct nl_msg *msg, void *arg) -{ - return NL_SKIP; -} - -static void nl80211_free(struct nl80211_msg_conveyor *cv) -{ - if (cv) - { - if (cv->cb) - nl_cb_put(cv->cb); - - if (cv->msg) - nlmsg_free(cv->msg); - - cv->cb = NULL; - cv->msg = NULL; - } -} - -static struct nl80211_msg_conveyor * nl80211_msg(const char *ifname, int cmd, int flags) -{ - static struct nl80211_msg_conveyor cv; - - int ifidx = -1, phyidx = -1; - struct nl_msg *req = NULL; - struct nl_cb *cb = NULL; - - if (nl80211_init() < 0) - goto err; - - if (!strncmp(ifname, "phy", 3)) - phyidx = atoi(&ifname[3]); - else if (!strncmp(ifname, "radio", 5)) - phyidx = atoi(&ifname[5]); - else if (!strncmp(ifname, "mon.", 4)) - ifidx = if_nametoindex(&ifname[4]); - else - ifidx = if_nametoindex(ifname); - - if ((ifidx < 0) && (phyidx < 0)) - return NULL; - - req = nlmsg_alloc(); - if (!req) - goto err; - - cb = nl_cb_alloc(NL_CB_DEFAULT); - if (!cb) - goto err; - - genlmsg_put(req, 0, 0, genl_family_get_id(nls->nl80211), 0, - flags, cmd, 0); - - if (ifidx > -1) - NLA_PUT_U32(req, NL80211_ATTR_IFINDEX, ifidx); - - if (phyidx > -1) - NLA_PUT_U32(req, NL80211_ATTR_WIPHY, phyidx); - - cv.msg = req; - cv.cb = cb; - - return &cv; - -err: -nla_put_failure: - if (cb) - nl_cb_put(cb); - - if (req) - nlmsg_free(req); - - return NULL; -} - -static struct nl80211_msg_conveyor * nl80211_send( - struct nl80211_msg_conveyor *cv, - int (*cb_func)(struct nl_msg *, void *), void *cb_arg -) { - static struct nl80211_msg_conveyor rcv; - int err = 1; - - if (cb_func) - nl_cb_set(cv->cb, NL_CB_VALID, NL_CB_CUSTOM, cb_func, cb_arg); - else - nl_cb_set(cv->cb, NL_CB_VALID, NL_CB_CUSTOM, nl80211_msg_response, &rcv); - - if (nl_send_auto_complete(nls->nl_sock, cv->msg) < 0) - goto err; - - nl_cb_err(cv->cb, NL_CB_CUSTOM, nl80211_msg_error, &err); - nl_cb_set(cv->cb, NL_CB_FINISH, NL_CB_CUSTOM, nl80211_msg_finish, &err); - nl_cb_set(cv->cb, NL_CB_ACK, NL_CB_CUSTOM, nl80211_msg_ack, &err); - - while (err > 0) - nl_recvmsgs(nls->nl_sock, cv->cb); - - return &rcv; - -err: - nl_cb_put(cv->cb); - nlmsg_free(cv->msg); - - return NULL; -} - -static struct nlattr ** nl80211_parse(struct nl_msg *msg) -{ - struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); - static struct nlattr *attr[NL80211_ATTR_MAX + 1]; - - nla_parse(attr, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), - genlmsg_attrlen(gnlh, 0), NULL); - - return attr; -} - -static int nl80211_freq2channel(int freq) -{ - if (freq == 2484) - return 14; - - if (freq < 2484) - return (freq - 2407) / 5; - - return (freq / 5) - 1000; -} - -static char * nl80211_getval(const char *ifname, const char *buf, const char *key) -{ - int i, len; - char lkey[64] = { 0 }; - const char *ln = buf; - static char lval[256] = { 0 }; - - int matched_if = ifname ? 0 : 1; - - - for( i = 0, len = strlen(buf); i < len; i++ ) - { - if (!lkey[0] && (buf[i] == ' ' || buf[i] == '\t')) - { - ln++; - } - else if (!lkey[0] && (buf[i] == '=')) - { - if ((&buf[i] - ln) > 0) - memcpy(lkey, ln, min(sizeof(lkey) - 1, &buf[i] - ln)); - } - else if (buf[i] == '\n') - { - if (lkey[0]) - { - memcpy(lval, ln + strlen(lkey) + 1, - min(sizeof(lval) - 1, &buf[i] - ln - strlen(lkey) - 1)); - - if ((ifname != NULL) && - (!strcmp(lkey, "interface") || !strcmp(lkey, "bss")) ) - { - matched_if = !strcmp(lval, ifname); - } - else if (matched_if && !strcmp(lkey, key)) - { - return lval; - } - } - - ln = &buf[i+1]; - memset(lkey, 0, sizeof(lkey)); - memset(lval, 0, sizeof(lval)); - } - } - - return NULL; -} - -static int nl80211_ifname2phy_cb(struct nl_msg *msg, void *arg) -{ - char *buf = arg; - struct nlattr **attr = nl80211_parse(msg); - - if (attr[NL80211_ATTR_WIPHY_NAME]) - sprintf(buf, "%s", nla_data(attr[NL80211_ATTR_WIPHY_NAME])); - else - buf[0] = 0; - - return NL_SKIP; -} - -static char * nl80211_ifname2phy(const char *ifname) -{ - static char phy[32] = { 0 }; - struct nl80211_msg_conveyor *req; - - memset(phy, 0, sizeof(phy)); - - req = nl80211_msg(ifname, NL80211_CMD_GET_WIPHY, 0); - if (req) - { - nl80211_send(req, nl80211_ifname2phy_cb, phy); - nl80211_free(req); - } - - return phy[0] ? phy : NULL; -} - -static char * nl80211_hostapd_info(const char *ifname) -{ - char *phy; - char path[32] = { 0 }; - static char buf[4096] = { 0 }; - FILE *conf; - - if ((phy = nl80211_ifname2phy(ifname)) != NULL) - { - snprintf(path, sizeof(path), "/var/run/hostapd-%s.conf", phy); - - if ((conf = fopen(path, "r")) != NULL) - { - fread(buf, sizeof(buf) - 1, 1, conf); - fclose(conf); - - return buf; - } - } - - return NULL; -} - -static inline int nl80211_wpactl_recv(int sock, char *buf, int blen) -{ - fd_set rfds; - struct timeval tv = { 2, 0 }; - - FD_ZERO(&rfds); - FD_SET(sock, &rfds); - - memset(buf, 0, blen); - - - if (select(sock + 1, &rfds, NULL, NULL, &tv) < 0) - return -1; - - if (!FD_ISSET(sock, &rfds)) - return -1; - - return recv(sock, buf, blen, 0); -} - -static char * nl80211_wpactl_info(const char *ifname, const char *cmd, - const char *event) -{ - int numtry = 0; - int sock = -1; - char *rv = NULL; - size_t remote_length, local_length; - static char buffer[10240] = { 0 }; - - struct sockaddr_un local = { 0 }; - struct sockaddr_un remote = { 0 }; - - - sock = socket(PF_UNIX, SOCK_DGRAM, 0); - if (sock < 0) - return NULL; - - remote.sun_family = AF_UNIX; - remote_length = sizeof(remote.sun_family) + sprintf(remote.sun_path, - "/var/run/wpa_supplicant-%s/%s", ifname, ifname); - - if (fcntl(sock, F_SETFD, fcntl(sock, F_GETFD) | FD_CLOEXEC) < 0) - goto out; - - if (connect(sock, (struct sockaddr *) &remote, remote_length)) - goto out; - - local.sun_family = AF_UNIX; - local_length = sizeof(local.sun_family) + sprintf(local.sun_path, - "/var/run/iwinfo-%s-%d", ifname, getpid()); - - if (bind(sock, (struct sockaddr *) &local, local_length)) - goto out; - - - send(sock, "ATTACH", 6, 0); - - if (nl80211_wpactl_recv(sock, buffer, sizeof(buffer)) <= 0) - goto out; - - - send(sock, cmd, strlen(cmd), 0); - - while( numtry++ < 5 ) - { - if (nl80211_wpactl_recv(sock, buffer, sizeof(buffer)) <= 0) - { - if (event) - continue; - - break; - } - - if ((!event && buffer[0] != '<') || strstr(buffer, event)) - break; - } - - rv = buffer; - -out: - close(sock); - - if (local.sun_family) - unlink(local.sun_path); - - return rv; -} - -static inline int nl80211_readint(const char *path) -{ - int fd; - int rv = -1; - char buffer[16]; - - if ((fd = open(path, O_RDONLY)) > -1) - { - if (read(fd, buffer, sizeof(buffer)) > 0) - rv = atoi(buffer); - - close(fd); - } - - return rv; -} - -static char * nl80211_phy2ifname(const char *ifname) -{ - int fd, ifidx = -1, cifidx = -1, phyidx = -1; - char buffer[64]; - static char nif[IFNAMSIZ] = { 0 }; - - DIR *d; - struct dirent *e; - - if (!ifname) - return NULL; - else if (!strncmp(ifname, "phy", 3)) - phyidx = atoi(&ifname[3]); - else if (!strncmp(ifname, "radio", 5)) - phyidx = atoi(&ifname[5]); - - memset(nif, 0, sizeof(nif)); - - if (phyidx > -1) - { - if ((d = opendir("/sys/class/net")) != NULL) - { - while( (e = readdir(d)) != NULL ) - { - snprintf(buffer, sizeof(buffer), - "/sys/class/net/%s/phy80211/index", e->d_name); - - if (nl80211_readint(buffer) == phyidx) - { - snprintf(buffer, sizeof(buffer), - "/sys/class/net/%s/ifindex", e->d_name); - - if( (cifidx = nl80211_readint(buffer)) >= 0 && - ((ifidx < 0) || (cifidx < ifidx)) ) - { - ifidx = cifidx; - strncpy(nif, e->d_name, sizeof(nif)); - } - } - } - - closedir(d); - } - } - - return nif[0] ? nif : NULL; -} - -static char * nl80211_ifadd(const char *ifname) -{ - int phyidx; - char *rv = NULL; - static char nif[IFNAMSIZ] = { 0 }; - struct nl80211_msg_conveyor *req, *res; - - req = nl80211_msg(ifname, NL80211_CMD_NEW_INTERFACE, 0); - if (req) - { - snprintf(nif, sizeof(nif), "tmp.%s", ifname); - - NLA_PUT_STRING(req->msg, NL80211_ATTR_IFNAME, nif); - NLA_PUT_U32(req->msg, NL80211_ATTR_IFTYPE, NL80211_IFTYPE_STATION); - - nl80211_send(req, NULL, NULL); - - rv = nif; - - nla_put_failure: - nl80211_free(req); - } - - return rv; -} - -static void nl80211_ifdel(const char *ifname) -{ - struct nl80211_msg_conveyor *req; - - req = nl80211_msg(ifname, NL80211_CMD_DEL_INTERFACE, 0); - if (req) - { - NLA_PUT_STRING(req->msg, NL80211_ATTR_IFNAME, ifname); - - nl80211_send(req, NULL, NULL); - - nla_put_failure: - nl80211_free(req); - } -} - -static void nl80211_hostapd_hup(const char *ifname) -{ - int fd, pid = 0; - char buf[32]; - char *phy = nl80211_ifname2phy(ifname); - - if (phy) - { - snprintf(buf, sizeof(buf), "/var/run/wifi-%s.pid", phy); - if ((fd = open(buf, O_RDONLY)) > 0) - { - if (read(fd, buf, sizeof(buf)) > 0) - pid = atoi(buf); - - close(fd); - } - - if (pid > 0) - kill(pid, 1); - } -} - - -int nl80211_probe(const char *ifname) -{ - return !!nl80211_ifname2phy(ifname); -} - -void nl80211_close(void) -{ - if (nls) - { - if (nls->nl_sock) - nl_socket_free(nls->nl_sock); - - if (nls->nl_cache) - nl_cache_free(nls->nl_cache); - - free(nls); - nls = NULL; - } -} - -int nl80211_get_mode(const char *ifname, char *buf) -{ - return wext_get_mode(ifname, buf); -} - -int nl80211_get_ssid(const char *ifname, char *buf) -{ - char *ssid; - - if (!wext_get_ssid(ifname, buf)) - { - return 0; - } - else if( (ssid = nl80211_hostapd_info(ifname)) && - (ssid = nl80211_getval(ifname, ssid, "ssid")) ) - { - memcpy(buf, ssid, strlen(ssid)); - return 0; - } - - return -1; -} - -int nl80211_get_bssid(const char *ifname, char *buf) -{ - char *bssid; - unsigned char mac[6]; - - if (!wext_get_bssid(ifname, buf)) - { - return 0; - } - else if((bssid = nl80211_hostapd_info(ifname)) && - (bssid = nl80211_getval(ifname, bssid, "bssid"))) - { - mac[0] = strtol(&bssid[0], NULL, 16); - mac[1] = strtol(&bssid[3], NULL, 16); - mac[2] = strtol(&bssid[6], NULL, 16); - mac[3] = strtol(&bssid[9], NULL, 16); - mac[4] = strtol(&bssid[12], NULL, 16); - mac[5] = strtol(&bssid[15], NULL, 16); - - sprintf(buf, "%02X:%02X:%02X:%02X:%02X:%02X", - mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]); - - return 0; - } - - return -1; -} - -int nl80211_get_channel(const char *ifname, int *buf) -{ - char *first; - - if (!wext_get_channel(ifname, buf)) - return 0; - - else if ((first = nl80211_phy2ifname(nl80211_ifname2phy(ifname))) != NULL) - return wext_get_channel(first, buf); - - return -1; -} - -int nl80211_get_frequency(const char *ifname, int *buf) -{ - char *first; - - if (!wext_get_frequency(ifname, buf)) - return 0; - - else if ((first = nl80211_phy2ifname(nl80211_ifname2phy(ifname))) != NULL) - return wext_get_frequency(first, buf); - - return -1; -} - -int nl80211_get_txpower(const char *ifname, int *buf) -{ - return wext_get_txpower(ifname, buf); -} - - -static int nl80211_fill_signal_cb(struct nl_msg *msg, void *arg) -{ - int8_t dbm; - int16_t mbit; - struct nl80211_rssi_rate *rr = arg; - struct nlattr **attr = nl80211_parse(msg); - struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1]; - struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1]; - - static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = { - [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 }, - [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 }, - [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 }, - [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 }, - [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 }, - [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 }, - [NL80211_STA_INFO_TX_BITRATE] = { .type = NLA_NESTED }, - [NL80211_STA_INFO_LLID] = { .type = NLA_U16 }, - [NL80211_STA_INFO_PLID] = { .type = NLA_U16 }, - [NL80211_STA_INFO_PLINK_STATE] = { .type = NLA_U8 }, - }; - - static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = { - [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 }, - [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 }, - [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG }, - [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG }, - }; - - if (attr[NL80211_ATTR_STA_INFO]) - { - if( !nla_parse_nested(sinfo, NL80211_STA_INFO_MAX, - attr[NL80211_ATTR_STA_INFO], stats_policy) ) - { - if (sinfo[NL80211_STA_INFO_SIGNAL]) - { - dbm = nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]); - rr->rssi = rr->rssi ? (int8_t)((rr->rssi + dbm) / 2) : dbm; - } - - if (sinfo[NL80211_STA_INFO_TX_BITRATE]) - { - if( !nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX, - sinfo[NL80211_STA_INFO_TX_BITRATE], rate_policy) ) - { - if (rinfo[NL80211_RATE_INFO_BITRATE]) - { - mbit = nla_get_u16(rinfo[NL80211_RATE_INFO_BITRATE]); - rr->rate = rr->rate - ? (int16_t)((rr->rate + mbit) / 2) : mbit; - } - } - } - } - } - - return NL_SKIP; -} - -static void nl80211_fill_signal(const char *ifname, struct nl80211_rssi_rate *r) -{ - DIR *d; - struct dirent *de; - struct nl80211_msg_conveyor *req; - - r->rssi = 0; - r->rate = 0; - - if ((d = opendir("/sys/class/net")) != NULL) - { - while ((de = readdir(d)) != NULL) - { - if (!strncmp(de->d_name, ifname, strlen(ifname)) && - (!de->d_name[strlen(ifname)] || - !strncmp(&de->d_name[strlen(ifname)], ".sta", 4))) - { - req = nl80211_msg(de->d_name, NL80211_CMD_GET_STATION, - NLM_F_DUMP); - - if (req) - { - nl80211_send(req, nl80211_fill_signal_cb, r); - nl80211_free(req); - } - } - } - - closedir(d); - } -} - -int nl80211_get_bitrate(const char *ifname, int *buf) -{ - struct nl80211_rssi_rate rr; - - if (!wext_get_bitrate(ifname, buf)) - return 0; - - nl80211_fill_signal(ifname, &rr); - - if (rr.rate) - { - *buf = (rr.rate * 100); - return 0; - } - - return -1; -} - -int nl80211_get_signal(const char *ifname, int *buf) -{ - struct nl80211_rssi_rate rr; - - if (!wext_get_signal(ifname, buf)) - return 0; - - nl80211_fill_signal(ifname, &rr); - - if (rr.rssi) - { - *buf = rr.rssi; - return 0; - } - - return -1; -} - -static int nl80211_get_noise_cb(struct nl_msg *msg, void *arg) -{ - int8_t *noise = arg; - struct nlattr **tb = nl80211_parse(msg); - struct nlattr *si[NL80211_SURVEY_INFO_MAX + 1]; - - static struct nla_policy sp[NL80211_SURVEY_INFO_MAX + 1] = { - [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 }, - [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 }, - }; - - if (!tb[NL80211_ATTR_SURVEY_INFO]) - return NL_SKIP; - - if (nla_parse_nested(si, NL80211_SURVEY_INFO_MAX, - tb[NL80211_ATTR_SURVEY_INFO], sp)) - return NL_SKIP; - - if (!si[NL80211_SURVEY_INFO_NOISE]) - return NL_SKIP; - - if (!*noise || si[NL80211_SURVEY_INFO_IN_USE]) - *noise = (int8_t)nla_get_u8(si[NL80211_SURVEY_INFO_NOISE]); - - return NL_SKIP; -} - - -int nl80211_get_noise(const char *ifname, int *buf) -{ - int8_t noise; - struct nl80211_msg_conveyor *req; - - req = nl80211_msg(ifname, NL80211_CMD_GET_SURVEY, NLM_F_DUMP); - if (req) - { - noise = 0; - - nl80211_send(req, nl80211_get_noise_cb, &noise); - nl80211_free(req); - - if (noise) - { - *buf = noise; - return 0; - } - } - - return -1; -} - -int nl80211_get_quality(const char *ifname, int *buf) -{ - int signal; - - if (wext_get_quality(ifname, buf)) - { - *buf = 0; - - if (!nl80211_get_signal(ifname, &signal)) - { - /* A positive signal level is usually just a quality - * value, pass through as-is */ - if (signal >= 0) - { - *buf = signal; - } - - /* The cfg80211 wext compat layer assumes a signal range - * of -110 dBm to -40 dBm, the quality value is derived - * by adding 110 to the signal level */ - else - { - if (signal < -110) - signal = -110; - else if (signal > -40) - signal = -40; - - *buf = (signal + 110); - } - } - } - - return 0; -} - -int nl80211_get_quality_max(const char *ifname, int *buf) -{ - if (wext_get_quality_max(ifname, buf)) - /* The cfg80211 wext compat layer assumes a maximum - * quality of 70 */ - *buf = 70; - - return 0; -} - -int nl80211_get_encryption(const char *ifname, char *buf) -{ - int i; - char k[9]; - char *val, *res; - struct iwinfo_crypto_entry *c = (struct iwinfo_crypto_entry *)buf; - - /* WPA supplicant */ - if( (res = nl80211_wpactl_info(ifname, "STATUS", NULL)) && - (val = nl80211_getval(NULL, res, "pairwise_cipher")) ) - { - /* WEP */ - if (strstr(val, "WEP")) - { - if (strstr(val, "WEP-40")) - c->pair_ciphers |= IWINFO_CIPHER_WEP40; - - else if (strstr(val, "WEP-104")) - c->pair_ciphers |= IWINFO_CIPHER_WEP104; - - c->enabled = 1; - c->group_ciphers = c->pair_ciphers; - - c->auth_suites |= IWINFO_KMGMT_NONE; - c->auth_algs |= IWINFO_AUTH_OPEN; /* XXX: assumption */ - } - - /* WPA */ - else - { - if (strstr(val, "TKIP")) - c->pair_ciphers |= IWINFO_CIPHER_TKIP; - - else if (strstr(val, "CCMP")) - c->pair_ciphers |= IWINFO_CIPHER_CCMP; - - else if (strstr(val, "NONE")) - c->pair_ciphers |= IWINFO_CIPHER_NONE; - - else if (strstr(val, "WEP-40")) - c->pair_ciphers |= IWINFO_CIPHER_WEP40; - - else if (strstr(val, "WEP-104")) - c->pair_ciphers |= IWINFO_CIPHER_WEP104; - - - if ((val = nl80211_getval(NULL, res, "group_cipher"))) - { - if (strstr(val, "TKIP")) - c->group_ciphers |= IWINFO_CIPHER_TKIP; - - else if (strstr(val, "CCMP")) - c->group_ciphers |= IWINFO_CIPHER_CCMP; - - else if (strstr(val, "NONE")) - c->group_ciphers |= IWINFO_CIPHER_NONE; - - else if (strstr(val, "WEP-40")) - c->group_ciphers |= IWINFO_CIPHER_WEP40; - - else if (strstr(val, "WEP-104")) - c->group_ciphers |= IWINFO_CIPHER_WEP104; - } - - - if ((val = nl80211_getval(NULL, res, "key_mgmt"))) - { - if (strstr(val, "WPA2")) - c->wpa_version = 2; - - else if (strstr(val, "WPA")) - c->wpa_version = 1; - - - if (strstr(val, "PSK")) - c->auth_suites |= IWINFO_KMGMT_PSK; - - else if (strstr(val, "EAP") || strstr(val, "802.1X")) - c->auth_suites |= IWINFO_KMGMT_8021x; - - else if (strstr(val, "NONE")) - c->auth_suites |= IWINFO_KMGMT_NONE; - } - - c->enabled = (c->wpa_version && c->auth_suites) ? 1 : 0; - } - - return 0; - } - - /* Hostapd */ - else if ((res = nl80211_hostapd_info(ifname))) - { - if ((val = nl80211_getval(ifname, res, "wpa")) != NULL) - c->wpa_version = atoi(val); - - val = nl80211_getval(ifname, res, "wpa_key_mgmt"); - - if (!val || strstr(val, "PSK")) - c->auth_suites |= IWINFO_KMGMT_PSK; - - if (val && strstr(val, "EAP")) - c->auth_suites |= IWINFO_KMGMT_8021x; - - if (val && strstr(val, "NONE")) - c->auth_suites |= IWINFO_KMGMT_NONE; - - if ((val = nl80211_getval(ifname, res, "wpa_pairwise")) != NULL) - { - if (strstr(val, "TKIP")) - c->pair_ciphers |= IWINFO_CIPHER_TKIP; - - if (strstr(val, "CCMP")) - c->pair_ciphers |= IWINFO_CIPHER_CCMP; - - if (strstr(val, "NONE")) - c->pair_ciphers |= IWINFO_CIPHER_NONE; - } - - if ((val = nl80211_getval(ifname, res, "auth_algs")) != NULL) - { - switch(atoi(val)) { - case 1: - c->auth_algs |= IWINFO_AUTH_OPEN; - break; - - case 2: - c->auth_algs |= IWINFO_AUTH_SHARED; - break; - - case 3: - c->auth_algs |= IWINFO_AUTH_OPEN; - c->auth_algs |= IWINFO_AUTH_SHARED; - break; - - default: - break; - } - - for( i = 0; i < 4; i++ ) - { - snprintf(k, sizeof(k), "wep_key%d", i); - - if ((val = nl80211_getval(ifname, res, k))) - { - if ((strlen(val) == 5) || (strlen(val) == 10)) - c->pair_ciphers |= IWINFO_CIPHER_WEP40; - - else if ((strlen(val) == 13) || (strlen(val) == 26)) - c->pair_ciphers |= IWINFO_CIPHER_WEP104; - } - } - } - - c->group_ciphers = c->pair_ciphers; - c->enabled = (c->wpa_version || c->pair_ciphers) ? 1 : 0; - - return 0; - } - - return -1; -} - - -static int nl80211_get_assoclist_cb(struct nl_msg *msg, void *arg) -{ - struct nl80211_array_buf *arr = arg; - struct iwinfo_assoclist_entry *e = arr->buf; - struct nlattr **attr = nl80211_parse(msg); - struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1]; - - static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = { - [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 }, - [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 }, - [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 }, - [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 }, - [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 }, - [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 }, - [NL80211_STA_INFO_TX_BITRATE] = { .type = NLA_NESTED }, - [NL80211_STA_INFO_LLID] = { .type = NLA_U16 }, - [NL80211_STA_INFO_PLID] = { .type = NLA_U16 }, - [NL80211_STA_INFO_PLINK_STATE] = { .type = NLA_U8 }, - }; - - /* advance to end of array */ - e += arr->count; - - if (attr[NL80211_ATTR_MAC]) - memcpy(e->mac, nla_data(attr[NL80211_ATTR_MAC]), 6); - - if (attr[NL80211_ATTR_STA_INFO]) - { - if (!nla_parse_nested(sinfo, NL80211_STA_INFO_MAX, - attr[NL80211_ATTR_STA_INFO], stats_policy)) - { - if (sinfo[NL80211_STA_INFO_SIGNAL]) - e->signal = nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]); - } - } - - e->noise = 0; /* filled in by caller */ - arr->count++; - - return NL_SKIP; -} - -int nl80211_get_assoclist(const char *ifname, char *buf, int *len) -{ - DIR *d; - int i, noise = 0; - struct dirent *de; - struct nl80211_msg_conveyor *req; - struct nl80211_array_buf arr = { .buf = buf, .count = 0 }; - struct iwinfo_assoclist_entry *e; - - if ((d = opendir("/sys/class/net")) != NULL) - { - while ((de = readdir(d)) != NULL) - { - if (!strncmp(de->d_name, ifname, strlen(ifname)) && - (!de->d_name[strlen(ifname)] || - !strncmp(&de->d_name[strlen(ifname)], ".sta", 4))) - { - req = nl80211_msg(de->d_name, NL80211_CMD_GET_STATION, - NLM_F_DUMP); - - if (req) - { - nl80211_send(req, nl80211_get_assoclist_cb, &arr); - nl80211_free(req); - } - - break; - } - } - - closedir(d); - - if (!nl80211_get_noise(ifname, &noise)) - for (i = 0, e = arr.buf; i < arr.count; i++, e++) - e->noise = noise; - - *len = (arr.count * sizeof(struct iwinfo_assoclist_entry)); - return 0; - } - - return -1; -} - -static int nl80211_get_txpwrlist_cb(struct nl_msg *msg, void *arg) -{ - int *dbm_max = arg; - int ch_cur, ch_cmp, bands_remain, freqs_remain; - - struct nlattr **attr = nl80211_parse(msg); - struct nlattr *bands[NL80211_BAND_ATTR_MAX + 1]; - struct nlattr *freqs[NL80211_FREQUENCY_ATTR_MAX + 1]; - struct nlattr *band, *freq; - - static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = { - [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 }, - [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG }, - [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG }, - [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG }, - [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG }, - [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 }, - }; - - ch_cur = *dbm_max; /* value int* is initialized with channel by caller */ - *dbm_max = -1; - - nla_for_each_nested(band, attr[NL80211_ATTR_WIPHY_BANDS], bands_remain) - { - nla_parse(bands, NL80211_BAND_ATTR_MAX, nla_data(band), - nla_len(band), NULL); - - nla_for_each_nested(freq, - bands[NL80211_BAND_ATTR_FREQS], freqs_remain) - { - nla_parse(freqs, NL80211_FREQUENCY_ATTR_MAX, - nla_data(freq), nla_len(freq), freq_policy); - - ch_cmp = nl80211_freq2channel( - nla_get_u32(freqs[NL80211_FREQUENCY_ATTR_FREQ])); - - if( (!ch_cur || (ch_cmp == ch_cur)) && - freqs[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] ) - { - *dbm_max = (int)(0.01 * nla_get_u32( - freqs[NL80211_FREQUENCY_ATTR_MAX_TX_POWER])); - - break; - } - } - } - - return NL_SKIP; -} - -int nl80211_get_txpwrlist(const char *ifname, char *buf, int *len) -{ - int ch_cur; - int dbm_max = -1, dbm_cur, dbm_cnt; - struct nl80211_msg_conveyor *req; - struct iwinfo_txpwrlist_entry entry; - - if (nl80211_get_channel(ifname, &ch_cur)) - ch_cur = 0; - - req = nl80211_msg(ifname, NL80211_CMD_GET_WIPHY, 0); - if (req) - { - /* initialize the value pointer with channel for callback */ - dbm_max = ch_cur; - - nl80211_send(req, nl80211_get_txpwrlist_cb, &dbm_max); - nl80211_free(req); - } - - if (dbm_max > -1) - { - for (dbm_cur = 0, dbm_cnt = 0; - dbm_cur < dbm_max; - dbm_cur++, dbm_cnt++) - { - entry.dbm = dbm_cur; - entry.mw = iwinfo_dbm2mw(dbm_cur); - - memcpy(&buf[dbm_cnt * sizeof(entry)], &entry, sizeof(entry)); - } - - entry.dbm = dbm_max; - entry.mw = iwinfo_dbm2mw(dbm_max); - - memcpy(&buf[dbm_cnt * sizeof(entry)], &entry, sizeof(entry)); - dbm_cnt++; - - *len = dbm_cnt * sizeof(entry); - return 0; - } - - return -1; -} - -static void nl80211_get_scancrypto(const char *spec, - struct iwinfo_crypto_entry *c) -{ - if (strstr(spec, "WPA") || strstr(spec, "WEP")) - { - c->enabled = 1; - - if (strstr(spec, "WPA2-") && strstr(spec, "WPA-")) - c->wpa_version = 3; - - else if (strstr(spec, "WPA2")) - c->wpa_version = 2; - - else if (strstr(spec, "WPA")) - c->wpa_version = 1; - - else if (strstr(spec, "WEP")) - c->auth_algs = IWINFO_AUTH_OPEN | IWINFO_AUTH_SHARED; - - - if (strstr(spec, "PSK")) - c->auth_suites |= IWINFO_KMGMT_PSK; - - if (strstr(spec, "802.1X") || strstr(spec, "EAP")) - c->auth_suites |= IWINFO_KMGMT_8021x; - - if (strstr(spec, "WPA-NONE")) - c->auth_suites |= IWINFO_KMGMT_NONE; - - - if (strstr(spec, "TKIP")) - c->pair_ciphers |= IWINFO_CIPHER_TKIP; - - if (strstr(spec, "CCMP")) - c->pair_ciphers |= IWINFO_CIPHER_CCMP; - - if (strstr(spec, "WEP-40")) - c->pair_ciphers |= IWINFO_CIPHER_WEP40; - - if (strstr(spec, "WEP-104")) - c->pair_ciphers |= IWINFO_CIPHER_WEP104; - - c->group_ciphers = c->pair_ciphers; - } - else - { - c->enabled = 0; - } -} - -int nl80211_get_scanlist(const char *ifname, char *buf, int *len) -{ - int freq, rssi, qmax, count; - char *res; - char ssid[128] = { 0 }; - char bssid[18] = { 0 }; - char cipher[256] = { 0 }; - - /* Got a radioX pseudo interface, find some interface on it or create one */ - if (!strncmp(ifname, "radio", 5)) - { - /* Reuse existing interface */ - if ((res = nl80211_phy2ifname(ifname)) != NULL) - { - return nl80211_get_scanlist(res, buf, len); - } - - /* Need to spawn a temporary iface for scanning */ - else if ((res = nl80211_ifadd(ifname)) != NULL) - { - count = nl80211_get_scanlist(res, buf, len); - nl80211_ifdel(res); - return count; - } - } - - struct iwinfo_scanlist_entry *e = (struct iwinfo_scanlist_entry *)buf; - - /* WPA supplicant */ - if ((res = nl80211_wpactl_info(ifname, "SCAN", "CTRL-EVENT-SCAN-RESULTS"))) - { - if ((res = nl80211_wpactl_info(ifname, "SCAN_RESULTS", NULL))) - { - nl80211_get_quality_max(ifname, &qmax); - - /* skip header line */ - while( *res++ != '\n' ); - - count = 0; - - while( sscanf(res, "%17s %d %d %255s%*[ \t]%127[^\n]\n", - bssid, &freq, &rssi, cipher, ssid) > 0 ) - { - /* BSSID */ - e->mac[0] = strtol(&bssid[0], NULL, 16); - e->mac[1] = strtol(&bssid[3], NULL, 16); - e->mac[2] = strtol(&bssid[6], NULL, 16); - e->mac[3] = strtol(&bssid[9], NULL, 16); - e->mac[4] = strtol(&bssid[12], NULL, 16); - e->mac[5] = strtol(&bssid[15], NULL, 16); - - /* SSID */ - memcpy(e->ssid, ssid, - min(strlen(ssid), sizeof(e->ssid) - 1)); - - /* Mode (assume master) */ - sprintf((char *)e->mode, "Master"); - - /* Channel */ - e->channel = nl80211_freq2channel(freq); - - /* Signal */ - e->signal = rssi; - - /* Quality */ - if (rssi < 0) - { - /* The cfg80211 wext compat layer assumes a signal range - * of -110 dBm to -40 dBm, the quality value is derived - * by adding 110 to the signal level */ - if (rssi < -110) - rssi = -110; - else if (rssi > -40) - rssi = -40; - - e->quality = (rssi + 110); - } - else - { - e->quality = rssi; - } - - /* Max. Quality */ - e->quality_max = qmax; - - /* Crypto */ - nl80211_get_scancrypto(cipher, &e->crypto); - - /* advance to next line */ - while( *res && *res++ != '\n' ); - - count++; - e++; - - memset(ssid, 0, sizeof(ssid)); - memset(bssid, 0, sizeof(bssid)); - memset(cipher, 0, sizeof(cipher)); - } - - *len = count * sizeof(struct iwinfo_scanlist_entry); - return 0; - } - } - - /* AP scan */ - else - { - /* Got a temp interface, don't create yet another one */ - if (!strncmp(ifname, "tmp.", 4)) - { - if (!iwinfo_ifup(ifname)) - return -1; - - wext_get_scanlist(ifname, buf, len); - iwinfo_ifdown(ifname); - return 0; - } - - /* Spawn a new scan interface */ - else - { - if (!(res = nl80211_ifadd(ifname))) - goto out; - - if (!iwinfo_ifmac(res)) - goto out; - - /* if we can take the new interface up, the driver supports an - * additional interface and there's no need to tear down the ap */ - if (iwinfo_ifup(res)) - { - wext_get_scanlist(res, buf, len); - iwinfo_ifdown(res); - } - - /* driver cannot create secondary interface, take down ap - * during scan */ - else if (iwinfo_ifdown(ifname) && iwinfo_ifup(res)) - { - wext_get_scanlist(res, buf, len); - iwinfo_ifdown(res); - iwinfo_ifup(ifname); - nl80211_hostapd_hup(ifname); - } - - out: - nl80211_ifdel(res); - return 0; - } - } - - return -1; -} - -static int nl80211_get_freqlist_cb(struct nl_msg *msg, void *arg) -{ - int bands_remain, freqs_remain; - - struct nl80211_array_buf *arr = arg; - struct iwinfo_freqlist_entry *e = arr->buf; - - struct nlattr **attr = nl80211_parse(msg); - struct nlattr *bands[NL80211_BAND_ATTR_MAX + 1]; - struct nlattr *freqs[NL80211_FREQUENCY_ATTR_MAX + 1]; - struct nlattr *band, *freq; - - static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = { - [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 }, - [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG }, - [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG }, - [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG }, - [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG }, - [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 }, - }; - - nla_for_each_nested(band, attr[NL80211_ATTR_WIPHY_BANDS], bands_remain) - { - nla_parse(bands, NL80211_BAND_ATTR_MAX, nla_data(band), - nla_len(band), NULL); - - nla_for_each_nested(freq, - bands[NL80211_BAND_ATTR_FREQS], freqs_remain) - { - nla_parse(freqs, NL80211_FREQUENCY_ATTR_MAX, - nla_data(freq), nla_len(freq), NULL); - - if( !freqs[NL80211_FREQUENCY_ATTR_FREQ] || - freqs[NL80211_FREQUENCY_ATTR_DISABLED] ) - continue; - - e->mhz = nla_get_u32(freqs[NL80211_FREQUENCY_ATTR_FREQ]); - e->channel = nl80211_freq2channel(e->mhz); - - e->restricted = ( - freqs[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] || - freqs[NL80211_FREQUENCY_ATTR_NO_IBSS] || - freqs[NL80211_FREQUENCY_ATTR_RADAR] - ) ? 1 : 0; - - e++; - arr->count++; - } - } - - return NL_SKIP; -} - -int nl80211_get_freqlist(const char *ifname, char *buf, int *len) -{ - struct nl80211_msg_conveyor *req; - struct nl80211_array_buf arr = { .buf = buf, .count = 0 }; - - req = nl80211_msg(ifname, NL80211_CMD_GET_WIPHY, 0); - if (req) - { - nl80211_send(req, nl80211_get_freqlist_cb, &arr); - nl80211_free(req); - } - - if (arr.count > 0) - { - *len = arr.count * sizeof(struct iwinfo_freqlist_entry); - return 0; - } - - return -1; -} - -static int nl80211_get_country_cb(struct nl_msg *msg, void *arg) -{ - char *buf = arg; - struct nlattr **attr = nl80211_parse(msg); - - if (attr[NL80211_ATTR_REG_ALPHA2]) - memcpy(buf, nla_data(attr[NL80211_ATTR_REG_ALPHA2]), 2); - else - buf[0] = 0; - - return NL_SKIP; -} - -int nl80211_get_country(const char *ifname, char *buf) -{ - int rv = -1; - struct nl80211_msg_conveyor *req; - - req = nl80211_msg(ifname, NL80211_CMD_GET_REG, 0); - if (req) - { - nl80211_send(req, nl80211_get_country_cb, buf); - nl80211_free(req); - - if (buf[0]) - rv = 0; - } - - return rv; -} - -int nl80211_get_countrylist(const char *ifname, char *buf, int *len) -{ - int i, count; - struct iwinfo_country_entry *e = (struct iwinfo_country_entry *)buf; - const struct iwinfo_iso3166_label *l; - - for( l = IWINFO_ISO3166_NAMES, count = 0; l->iso3166; l++, e++, count++ ) - { - e->iso3166 = l->iso3166; - e->ccode[0] = (l->iso3166 / 256); - e->ccode[1] = (l->iso3166 % 256); - } - - *len = (count * sizeof(struct iwinfo_country_entry)); - return 0; -} - -static int nl80211_get_hwmodelist_cb(struct nl_msg *msg, void *arg) -{ - int *modes = arg; - int bands_remain, freqs_remain; - uint16_t caps = 0; - struct nlattr **attr = nl80211_parse(msg); - struct nlattr *bands[NL80211_BAND_ATTR_MAX + 1]; - struct nlattr *freqs[NL80211_FREQUENCY_ATTR_MAX + 1]; - struct nlattr *band, *freq; - - *modes = 0; - - if (attr[NL80211_ATTR_WIPHY_BANDS]) - { - nla_for_each_nested(band, attr[NL80211_ATTR_WIPHY_BANDS], bands_remain) - { - nla_parse(bands, NL80211_BAND_ATTR_MAX, nla_data(band), - nla_len(band), NULL); - - if (bands[NL80211_BAND_ATTR_HT_CAPA]) - caps = nla_get_u16(bands[NL80211_BAND_ATTR_HT_CAPA]); - - /* Treat any nonzero capability as 11n */ - if (caps > 0) - *modes |= IWINFO_80211_N; - - nla_for_each_nested(freq, - bands[NL80211_BAND_ATTR_FREQS], freqs_remain) - { - nla_parse(freqs, NL80211_FREQUENCY_ATTR_MAX, - nla_data(freq), nla_len(freq), NULL); - - if (!freqs[NL80211_FREQUENCY_ATTR_FREQ]) - continue; - - if (nla_get_u32(freqs[NL80211_FREQUENCY_ATTR_FREQ]) < 2485) - { - *modes |= IWINFO_80211_B; - *modes |= IWINFO_80211_G; - } - else - { - *modes |= IWINFO_80211_A; - } - } - } - } - - return NL_SKIP; -} - -int nl80211_get_hwmodelist(const char *ifname, int *buf) -{ - struct nl80211_msg_conveyor *req; - - req = nl80211_msg(ifname, NL80211_CMD_GET_WIPHY, 0); - if (req) - { - nl80211_send(req, nl80211_get_hwmodelist_cb, buf); - nl80211_free(req); - } - - return *buf ? 0 : -1; -} - -int nl80211_get_mbssid_support(const char *ifname, int *buf) -{ - /* Test whether we can create another interface */ - char *nif = nl80211_ifadd(ifname); - - if (nif) - { - *buf = (iwinfo_ifmac(nif) && iwinfo_ifup(nif)); - - iwinfo_ifdown(nif); - nl80211_ifdel(nif); - - return 0; - } - - return -1; -} |