/*
* iwinfo - Wireless Information Library - NL80211 Backend
*
- * Copyright (C) 2010 Jo-Philipp Wich <xm@subsignal.org>
+ * Copyright (C) 2010-2013 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
static char * nl80211_hostapd_info(const char *ifname)
{
+ int mode;
char *phy;
char path[32] = { 0 };
static char buf[4096] = { 0 };
FILE *conf;
- if ((phy = nl80211_ifname2phy(ifname)) != NULL)
+ if (nl80211_get_mode(ifname, &mode))
+ return NULL;
+
+ if ((mode == IWINFO_OPMODE_MASTER || mode == IWINFO_OPMODE_AP_VLAN) &&
+ (phy = nl80211_ifname2phy(ifname)) != NULL)
{
snprintf(path, sizeof(path), "/var/run/hostapd-%s.conf", phy);
}
}
+
+static int nl80211_get_mode_cb(struct nl_msg *msg, void *arg)
+{
+ int *mode = arg;
+ struct nlattr **tb = nl80211_parse(msg);
+ const int ifmodes[NL80211_IFTYPE_MAX + 1] = {
+ IWINFO_OPMODE_UNKNOWN, /* unspecified */
+ IWINFO_OPMODE_ADHOC, /* IBSS */
+ IWINFO_OPMODE_CLIENT, /* managed */
+ IWINFO_OPMODE_MASTER, /* AP */
+ IWINFO_OPMODE_AP_VLAN, /* AP/VLAN */
+ IWINFO_OPMODE_WDS, /* WDS */
+ IWINFO_OPMODE_MONITOR, /* monitor */
+ IWINFO_OPMODE_MESHPOINT, /* mesh point */
+ IWINFO_OPMODE_P2P_CLIENT, /* P2P-client */
+ IWINFO_OPMODE_P2P_GO, /* P2P-GO */
+ };
+
+ if (tb[NL80211_ATTR_IFTYPE])
+ *mode = ifmodes[nla_get_u32(tb[NL80211_ATTR_IFTYPE])];
+
+ return NL_SKIP;
+}
+
int nl80211_get_mode(const char *ifname, int *buf)
{
- return wext_get_mode(ifname, buf);
+ char *res;
+ struct nl80211_msg_conveyor *req;
+
+ res = nl80211_phy2ifname(ifname);
+ req = nl80211_msg(res ? res : ifname, NL80211_CMD_GET_INTERFACE, 0);
+ *buf = IWINFO_OPMODE_UNKNOWN;
+
+ if (req)
+ {
+ nl80211_send(req, nl80211_get_mode_cb, buf);
+ nl80211_free(req);
+ }
+
+ return (*buf == IWINFO_OPMODE_UNKNOWN) ? -1 : 0;
+}
+
+
+struct nl80211_ssid_bssid {
+ unsigned char *ssid;
+ unsigned char bssid[7];
+};
+
+static int nl80211_get_ssid_bssid_cb(struct nl_msg *msg, void *arg)
+{
+ int ielen;
+ unsigned char *ie;
+ struct nl80211_ssid_bssid *sb = arg;
+ struct nlattr **tb = nl80211_parse(msg);
+ struct nlattr *bss[NL80211_BSS_MAX + 1];
+
+ static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
+ [NL80211_BSS_INFORMATION_ELEMENTS] = { },
+ [NL80211_BSS_STATUS] = { .type = NLA_U32 },
+ };
+
+ if (!tb[NL80211_ATTR_BSS] ||
+ nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
+ bss_policy) ||
+ !bss[NL80211_BSS_BSSID] ||
+ !bss[NL80211_BSS_STATUS] ||
+ !bss[NL80211_BSS_INFORMATION_ELEMENTS])
+ {
+ return NL_SKIP;
+ }
+
+ switch (nla_get_u32(bss[NL80211_BSS_STATUS]))
+ {
+ case NL80211_BSS_STATUS_ASSOCIATED:
+ case NL80211_BSS_STATUS_AUTHENTICATED:
+ case NL80211_BSS_STATUS_IBSS_JOINED:
+
+ if (sb->ssid)
+ {
+ ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
+ ielen = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
+
+ while (ielen >= 2 && ielen >= ie[1])
+ {
+ if (ie[0] == 0)
+ {
+ memcpy(sb->ssid, ie + 2, min(ie[1], IWINFO_ESSID_MAX_SIZE));
+ return NL_SKIP;
+ }
+
+ ielen -= ie[1] + 2;
+ ie += ie[1] + 2;
+ }
+ }
+ else
+ {
+ sb->bssid[0] = 1;
+ memcpy(sb->bssid + 1, nla_data(bss[NL80211_BSS_BSSID]), 6);
+ return NL_SKIP;
+ }
+
+ default:
+ return NL_SKIP;
+ }
}
int nl80211_get_ssid(const char *ifname, char *buf)
{
- char *ssid;
+ char *res;
+ struct nl80211_msg_conveyor *req;
+ struct nl80211_ssid_bssid sb;
+
+ /* try to find ssid from scan dump results */
+ res = nl80211_phy2ifname(ifname);
+ req = nl80211_msg(res ? res : ifname, NL80211_CMD_GET_SCAN, NLM_F_DUMP);
- if (!wext_get_ssid(ifname, buf))
+ sb.ssid = buf;
+ *buf = 0;
+
+ if (req)
{
- return 0;
+ nl80211_send(req, nl80211_get_ssid_bssid_cb, &sb);
+ nl80211_free(req);
}
- else if ((ssid = nl80211_hostapd_info(ifname)) &&
- (ssid = nl80211_getval(ifname, ssid, "ssid")))
+
+ /* failed, try to find from hostapd info */
+ if ((*buf == 0) &&
+ (res = nl80211_hostapd_info(ifname)) &&
+ (res = nl80211_getval(ifname, res, "ssid")))
{
- memcpy(buf, ssid, strlen(ssid));
- return 0;
+ memcpy(buf, res, strlen(res));
}
- return -1;
+ return (*buf == 0) ? -1 : 0;
}
int nl80211_get_bssid(const char *ifname, char *buf)
{
- char *bssid;
- unsigned char mac[6];
+ char *res;
+ struct nl80211_msg_conveyor *req;
+ struct nl80211_ssid_bssid sb;
+
+ /* try to find bssid from scan dump results */
+ res = nl80211_phy2ifname(ifname);
+ req = nl80211_msg(res ? res : ifname, NL80211_CMD_GET_SCAN, NLM_F_DUMP);
- if (!wext_get_bssid(ifname, buf))
+ sb.ssid = NULL;
+ sb.bssid[0] = 0;
+
+ if (req)
{
- return 0;
+ nl80211_send(req, nl80211_get_ssid_bssid_cb, &sb);
+ nl80211_free(req);
}
- else if ((bssid = nl80211_hostapd_info(ifname)) &&
- (bssid = nl80211_getval(ifname, bssid, "bssid")))
+
+ /* failed, try to find mac from hostapd info */
+ if ((sb.bssid[0] == 0) &&
+ (res = nl80211_hostapd_info(ifname)) &&
+ (res = nl80211_getval(ifname, res, "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);
+ sb.bssid[0] = 1;
+ sb.bssid[1] = strtol(&res[0], NULL, 16);
+ sb.bssid[2] = strtol(&res[3], NULL, 16);
+ sb.bssid[3] = strtol(&res[6], NULL, 16);
+ sb.bssid[4] = strtol(&res[9], NULL, 16);
+ sb.bssid[5] = strtol(&res[12], NULL, 16);
+ sb.bssid[6] = strtol(&res[15], NULL, 16);
+ }
+ if (sb.bssid[0])
+ {
sprintf(buf, "%02X:%02X:%02X:%02X:%02X:%02X",
- mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
+ sb.bssid[1], sb.bssid[2], sb.bssid[3],
+ sb.bssid[4], sb.bssid[5], sb.bssid[6]);
return 0;
}
}
-static int nl80211_get_frequency_cb(struct nl_msg *msg, void *arg)
+static int nl80211_get_frequency_scan_cb(struct nl_msg *msg, void *arg)
{
int *freq = arg;
struct nlattr **attr = nl80211_parse(msg);
return NL_SKIP;
}
+static int nl80211_get_frequency_info_cb(struct nl_msg *msg, void *arg)
+{
+ int *freq = arg;
+ struct nlattr **tb = nl80211_parse(msg);
+
+ if (tb[NL80211_ATTR_WIPHY_FREQ])
+ *freq = nla_get_u32(tb[NL80211_ATTR_WIPHY_FREQ]);
+
+ return NL_SKIP;
+}
+
int nl80211_get_frequency(const char *ifname, int *buf)
{
char *res, *channel;
struct nl80211_msg_conveyor *req;
+ /* try to find frequency from interface info */
+ res = nl80211_phy2ifname(ifname);
+ req = nl80211_msg(res ? res : ifname, NL80211_CMD_GET_INTERFACE, 0);
*buf = 0;
- if ((res = nl80211_hostapd_info(ifname)) &&
+ if (req)
+ {
+ nl80211_send(req, nl80211_get_frequency_info_cb, buf);
+ nl80211_free(req);
+ }
+
+ /* failed, try to find frequency from hostapd info */
+ if ((*buf == 0) &&
+ (res = nl80211_hostapd_info(ifname)) &&
(channel = nl80211_getval(NULL, res, "channel")))
{
*buf = nl80211_channel2freq(atoi(channel),
}
else
{
- res = nl80211_phy2ifname(ifname);
- req = nl80211_msg(res ? res : ifname, NL80211_CMD_GET_SCAN, NLM_F_DUMP);
-
- if (req)
+ /* failed, try to find frequency from scan results */
+ if (*buf == 0)
{
- nl80211_send(req, nl80211_get_frequency_cb, buf);
- nl80211_free(req);
+ res = nl80211_phy2ifname(ifname);
+ req = nl80211_msg(res ? res : ifname, NL80211_CMD_GET_SCAN,
+ NLM_F_DUMP);
+
+ if (req)
+ {
+ nl80211_send(req, nl80211_get_frequency_scan_cb, buf);
+ nl80211_free(req);
+ }
}
}
int nl80211_get_txpower(const char *ifname, int *buf)
{
+ char *res;
+ char path[PATH_MAX];
+
+ res = nl80211_ifname2phy(ifname);
+ snprintf(path, sizeof(path), "/sys/kernel/debug/ieee80211/%s/power",
+ res ? res : ifname);
+
+ if ((*buf = nl80211_readint(path)) > -1)
+ return 0;
+
return wext_get_txpower(ifname, buf);
}
{
struct nl80211_rssi_rate rr;
- if (!wext_get_bitrate(ifname, buf))
- return 0;
-
nl80211_fill_signal(ifname, &rr);
if (rr.rate)
{
struct nl80211_rssi_rate rr;
- if (!wext_get_signal(ifname, buf))
- return 0;
-
nl80211_fill_signal(ifname, &rr);
if (rr.rssi)
{
int signal;
- if (wext_get_quality(ifname, buf))
+ if (!nl80211_get_signal(ifname, &signal))
{
- *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)
{
- /* A positive signal level is usually just a quality
- * value, pass through as-is */
- if (signal >= 0)
- {
- *buf = signal;
- }
+ *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;
+ /* 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);
- }
+ *buf = (signal + 110);
}
+
+ return 0;
}
- return 0;
+ return -1;
}
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;
+ /* The cfg80211 wext compat layer assumes a maximum
+ * quality of 70 */
+ *buf = 70;
return 0;
}
projects / openwrt / staging / xback.git / commitdiff