[contrib] introduce libiwinfo, splitted apart from LuCI for general usage

- added NL80211 interface for b43 / ath5k / ath9k
- introduces txpower() and encryption() methods
- introduces iwinfo cli frontend for data access
- supports scanning in AP mode (experimental) and through wpa_supplicant

1 files changed, 499 insertions, 0 deletions

diff --git a/contrib/package/iwinfo/src/iwinfo_wl.c b/contrib/package/iwinfo/src/iwinfo_wl.c
new file mode 100644
index 000000000..1c2929489
--- /dev/null
+++ b/contrib/package/iwinfo/src/iwinfo_wl.c
@@ -0,0 +1,499 @@
+/*
+ * iwinfo - Wireless Information Library - Broadcom wl.o Backend
+ *
+ *   Copyright (C) 2009 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/.
+ *
+ * This code is based on the wlc.c utility published by OpenWrt.org . 
+ */
+
+#include "iwinfo_wl.h"
+#include "iwinfo_wext.h"
+
+static int ioctl_socket = -1;
+
+static int wl_ioctl(const char *name, int cmd, void *buf, int len)
+{
+	struct ifreq ifr;
+	wl_ioctl_t ioc;
+
+	/* prepare socket */
+	if( ioctl_socket == -1 )
+		ioctl_socket = socket(AF_INET, SOCK_DGRAM, 0);
+
+	/* do it */
+	ioc.cmd = cmd;
+	ioc.buf = buf;
+	ioc.len = len;
+	strncpy(ifr.ifr_name, name, IFNAMSIZ);
+	ifr.ifr_data = (caddr_t) &ioc;
+
+	return ioctl(ioctl_socket, SIOCDEVPRIVATE, &ifr);
+}
+
+static struct wl_maclist * wl_read_assoclist(const char *ifname)
+{
+	struct wl_maclist *macs;
+	int maclen = 4 + WL_MAX_STA_COUNT * 6;
+
+	if( (macs = (struct wl_maclist *) malloc(maclen)) != NULL )
+	{
+		memset(macs, 0, maclen);
+		macs->count = WL_MAX_STA_COUNT;
+
+		if( !wl_ioctl(ifname, WLC_GET_ASSOCLIST, macs, maclen) )
+			return macs;
+
+		free(macs);
+	}
+
+	return NULL;
+}
+
+
+int wl_probe(const char *ifname)
+{
+	int magic;
+
+	if( !wl_ioctl(ifname, WLC_GET_MAGIC, &magic, sizeof(magic)) && (magic == WLC_IOCTL_MAGIC))
+		return 1;
+
+	return 0;
+}
+
+int wl_get_mode(const char *ifname, char *buf)
+{
+	int ret = -1;
+	int ap, infra, passive;
+
+	if( (ret = wl_ioctl(ifname, WLC_GET_AP, &ap, sizeof(ap))) )
+		return ret;
+
+	if( (ret = wl_ioctl(ifname, WLC_GET_INFRA, &infra, sizeof(infra))) )
+		return ret;
+
+	if( (ret = wl_ioctl(ifname, WLC_GET_PASSIVE, &passive, sizeof(passive))) )
+		return ret;
+
+	if( passive )
+		sprintf(buf, "Monitor");
+	else if( !infra )
+		sprintf(buf, "Ad-Hoc");
+	else if( ap )
+		sprintf(buf, "Master");
+	else
+		sprintf(buf, "Client");
+
+	return 0;
+}
+
+int wl_get_ssid(const char *ifname, char *buf)
+{
+	int ret = -1;
+	wlc_ssid_t ssid;
+
+	if( !(ret = wl_ioctl(ifname, WLC_GET_SSID, &ssid, sizeof(ssid))) )
+		memcpy(buf, ssid.ssid, ssid.ssid_len);
+
+	return ret;
+}
+
+int wl_get_bssid(const char *ifname, char *buf)
+{
+	int ret = -1;
+	char bssid[6];
+
+	if( !(ret = wl_ioctl(ifname, WLC_GET_BSSID, bssid, 6)) )
+		sprintf(buf, "%02X:%02X:%02X:%02X:%02X:%02X",
+			(uint8_t)bssid[0], (uint8_t)bssid[1], (uint8_t)bssid[2],
+			(uint8_t)bssid[3], (uint8_t)bssid[4], (uint8_t)bssid[5]
+		);
+
+	return ret;
+}
+
+int wl_get_channel(const char *ifname, int *buf)
+{
+	return wl_ioctl(ifname, WLC_GET_CHANNEL, buf, sizeof(buf));
+}
+
+int wl_get_frequency(const char *ifname, int *buf)
+{
+	return wext_get_frequency(ifname, buf);
+}
+
+int wl_get_txpower(const char *ifname, int *buf)
+{
+	return wext_get_txpower(ifname, buf);
+}
+
+int wl_get_bitrate(const char *ifname, int *buf)
+{
+	int ret = -1;
+	int rate = 0;
+
+	if( !(ret = wl_ioctl(ifname, WLC_GET_RATE, &rate, sizeof(rate))) && (rate > 0))
+		*buf = ((rate / 2) * 1000) + ((rate & 1) ? 500 : 0);
+
+	return ret;
+}
+
+int wl_get_signal(const char *ifname, int *buf)
+{
+	unsigned int ap, rssi, i, rssi_count;
+	int ioctl_req_version = 0x2000;
+	char tmp[WLC_IOCTL_MAXLEN];
+	struct wl_maclist *macs = NULL;
+	wl_sta_rssi_t starssi;
+
+	memset(tmp, 0, WLC_IOCTL_MAXLEN);
+	memcpy(tmp, &ioctl_req_version, sizeof(ioctl_req_version));
+
+	wl_ioctl(ifname, WLC_GET_BSS_INFO, tmp, WLC_IOCTL_MAXLEN);
+
+	if( !wl_ioctl(ifname, WLC_GET_AP, &ap, sizeof(ap)) && !ap )
+	{
+		*buf = tmp[WL_BSS_RSSI_OFFSET];
+	}
+	else
+	{
+		rssi = rssi_count = 0;
+
+		/* Calculate average rssi from conntected stations */
+		if( (macs = wl_read_assoclist(ifname)) != NULL )
+		{
+			for( i = 0; i < macs->count; i++ )
+			{
+				memcpy(starssi.mac, &macs->ea[i], 6);
+
+				if( !wl_ioctl(ifname, WLC_GET_RSSI, &starssi, 12) )
+				{
+					rssi -= starssi.rssi;
+					rssi_count++;
+				}
+			}
+
+			free(macs);
+		}
+
+		*buf = (rssi == 0 || rssi_count == 0) ? 1 : -(rssi / rssi_count);
+	}
+
+	return 0;
+}
+
+int wl_get_noise(const char *ifname, int *buf)
+{
+	unsigned int ap, noise;
+	int ioctl_req_version = 0x2000;
+	char tmp[WLC_IOCTL_MAXLEN];
+
+	memset(tmp, 0, WLC_IOCTL_MAXLEN);
+	memcpy(tmp, &ioctl_req_version, sizeof(ioctl_req_version));
+
+	wl_ioctl(ifname, WLC_GET_BSS_INFO, tmp, WLC_IOCTL_MAXLEN);
+
+	if ((wl_ioctl(ifname, WLC_GET_AP, &ap, sizeof(ap)) < 0) || ap)
+	{
+		if (wl_ioctl(ifname, WLC_GET_PHY_NOISE, &noise, sizeof(noise)) < 0)
+			noise = 0;
+	}
+	else
+	{
+		noise = tmp[WL_BSS_NOISE_OFFSET];
+	}
+
+	*buf = noise;
+
+	return 0;
+}
+
+int wl_get_quality(const char *ifname, int *buf)
+{
+	return wext_get_quality(ifname, buf);
+}
+
+int wl_get_quality_max(const char *ifname, int *buf)
+{
+	return wext_get_quality_max(ifname, buf);
+}
+
+int wl_get_encryption(const char *ifname, char *buf)
+{
+	uint32_t wsec, wauth, wpa;
+	struct iwinfo_crypto_entry *c = (struct iwinfo_crypto_entry *)buf;
+
+	if( wl_ioctl(ifname, WLC_GET_WPA_AUTH, &wpa,   sizeof(uint32_t)) ||
+	    wl_ioctl(ifname, WLC_GET_WSEC,     &wsec,  sizeof(uint32_t)) ||
+		wl_ioctl(ifname, WLC_GET_AUTH,     &wauth, sizeof(uint32_t)) )
+			return -1;
+
+	switch(wsec)
+	{
+		case 2:
+			c->pair_ciphers |= IWINFO_CIPHER_TKIP;
+			break;
+
+		case 4:
+			c->pair_ciphers |= IWINFO_CIPHER_CCMP;
+			break;
+
+		case 6:
+			c->pair_ciphers |= IWINFO_CIPHER_TKIP;
+			c->pair_ciphers |= IWINFO_CIPHER_CCMP;
+			break;
+	}
+
+	switch(wpa)
+	{
+		case 0:
+			if( wsec && !wauth )
+				c->auth_algs |= IWINFO_AUTH_OPEN;
+
+			else if( wsec && wauth )
+				c->auth_algs |= IWINFO_AUTH_SHARED;
+
+			/* ToDo: evaluate WEP key lengths */
+			c->auth_ciphers = IWINFO_CIPHER_WEP40 | IWINFO_CIPHER_WEP104;
+			c->auth_suites |= IWINFO_KMGMT_NONE;
+			break;
+
+		case 2:
+			c->wpa_version = 1;
+			c->auth_suites |= IWINFO_KMGMT_8021x;
+			break;
+
+		case 4:
+			c->wpa_version = 1;
+			c->auth_suites |= IWINFO_KMGMT_PSK;
+			break;
+
+		case 32:
+		case 64:
+			c->wpa_version = 2;
+			c->auth_suites |= IWINFO_KMGMT_8021x;
+			break;
+
+		case 66:
+			c->wpa_version = 3;
+			c->auth_suites |= IWINFO_KMGMT_8021x;
+			break;
+
+		case 128:
+			c->wpa_version = 2;
+			c->auth_suites |= IWINFO_KMGMT_PSK;
+			break;
+
+		case 132:
+			c->wpa_version = 3;
+			c->auth_suites |= IWINFO_KMGMT_PSK;
+			break;
+
+		default:
+			break;
+	}
+
+	c->enabled = (c->wpa_version || c->auth_algs) ? 1 : 0;
+	c->group_ciphers = c->pair_ciphers;
+
+	return 0;
+}
+
+int wl_get_enctype(const char *ifname, char *buf)
+{
+	uint32_t wsec, wpa;
+	char algo[11];
+
+	if( wl_ioctl(ifname, WLC_GET_WPA_AUTH, &wpa, sizeof(uint32_t)) ||
+	    wl_ioctl(ifname, WLC_GET_WSEC, &wsec, sizeof(uint32_t)) )
+			return -1;
+
+	switch(wsec)
+	{
+		case 2:
+			sprintf(algo, "TKIP");
+			break;
+
+		case 4:
+			sprintf(algo, "CCMP");
+			break;
+
+		case 6:
+			sprintf(algo, "TKIP, CCMP");
+			break;
+	}
+
+	switch(wpa)
+	{
+		case 0:
+			sprintf(buf, "%s", wsec ? "WEP" : "None");
+			break;
+
+		case 2:
+			sprintf(buf, "WPA 802.1X (%s)", algo);
+			break;
+
+		case 4:
+			sprintf(buf, "WPA PSK (%s)", algo);
+			break;
+
+		case 32:
+			sprintf(buf, "802.1X (%s)", algo);
+			break;
+
+		case 64:
+			sprintf(buf, "WPA2 802.1X (%s)", algo);
+			break;
+
+		case 66:
+			sprintf(buf, "mixed WPA/WPA2 802.1X (%s)", algo);
+			break;
+
+		case 128:
+			sprintf(buf, "WPA2 PSK (%s)", algo);
+			break;
+
+		case 132:
+			sprintf(buf, "mixed WPA/WPA2 PSK (%s)", algo);
+			break;
+
+		default:
+			sprintf(buf, "Unknown");
+	}
+
+	return 0;
+}
+
+int wl_get_assoclist(const char *ifname, char *buf, int *len)
+{
+	int i, j, noise;
+	int ap, infra, passive;
+	char line[128];
+	char macstr[18];
+	char devstr[IFNAMSIZ];
+	struct wl_maclist *macs;
+	struct wl_sta_rssi rssi;
+	struct iwinfo_assoclist_entry entry;
+	FILE *arp;
+
+	ap = infra = passive = 0;
+
+	wl_ioctl(ifname, WLC_GET_AP, &ap, sizeof(ap));
+	wl_ioctl(ifname, WLC_GET_INFRA, &infra, sizeof(infra));
+	wl_ioctl(ifname, WLC_GET_PASSIVE, &passive, sizeof(passive));
+
+	if( wl_get_noise(ifname, &noise) )
+		noise = 0;
+
+	if( (ap || infra || passive) && ((macs = wl_read_assoclist(ifname)) != NULL) )
+	{
+		for( i = 0, j = 0; i < macs->count; i++, j += sizeof(struct iwinfo_assoclist_entry) )
+		{
+			memcpy(rssi.mac, &macs->ea[i], 6);
+
+			if( !wl_ioctl(ifname, WLC_GET_RSSI, &rssi, sizeof(struct wl_sta_rssi)) )
+				entry.signal = (rssi.rssi - 0x100);
+			else
+				entry.signal = 0;
+
+			entry.noise = noise;
+			memcpy(entry.mac, &macs->ea[i], 6);
+			memcpy(&buf[j], &entry, sizeof(entry));
+		}
+
+		*len = j;
+		free(macs);
+		return 0;
+	}
+	else if( (arp = fopen("/proc/net/arp", "r")) != NULL )
+	{
+		j = 0;
+
+		while( fgets(line, sizeof(line), arp) != NULL )
+		{
+			if( sscanf(line, "%*s 0x%*d 0x%*d %17s %*s %s", macstr, devstr) && !strcmp(devstr, ifname) )
+			{
+				rssi.mac[0] = strtol(&macstr[0],  NULL, 16);
+				rssi.mac[1] = strtol(&macstr[3],  NULL, 16);
+				rssi.mac[2] = strtol(&macstr[6],  NULL, 16);
+				rssi.mac[3] = strtol(&macstr[9],  NULL, 16);
+				rssi.mac[4] = strtol(&macstr[12], NULL, 16);
+				rssi.mac[5] = strtol(&macstr[15], NULL, 16);
+
+				if( !wl_ioctl(ifname, WLC_GET_RSSI, &rssi, sizeof(struct wl_sta_rssi)) )
+					entry.signal = (rssi.rssi - 0x100);
+				else
+					entry.signal = 0;
+
+				entry.noise = noise;
+				memcpy(entry.mac, rssi.mac, 6);
+				memcpy(&buf[j], &entry, sizeof(entry));
+
+				j += sizeof(entry);
+			}
+		}
+
+		*len = j;
+		(void) fclose(arp);
+		return 0;
+	}
+
+	return -1;
+}
+
+int wl_get_txpwrlist(const char *ifname, char *buf, int *len)
+{
+	struct iwinfo_txpwrlist_entry entry;
+	uint8_t dbm[8] = { 0, 6, 8, 10, 12, 14, 16, 18 };
+	uint8_t mw[8]  = { 1, 3, 6, 10, 15, 25, 39, 63 };
+	int i;
+
+	for( i = 0; i < 8; i++ )
+	{
+		entry.dbm = dbm[i];
+		entry.mw  = mw[i];
+		memcpy(&buf[i*sizeof(entry)], &entry, sizeof(entry));
+	}
+
+	*len = 8 * sizeof(entry);
+	return 0;
+}
+
+int wl_get_scanlist(const char *ifname, char *buf, int *len)
+{
+	return wext_get_scanlist(ifname, buf, len);
+}
+
+int wl_get_freqlist(const char *ifname, char *buf, int *len)
+{
+	return wext_get_freqlist(ifname, buf, len);
+}
+
+int wl_get_mbssid_support(const char *ifname, int *buf)
+{
+	wlc_rev_info_t revinfo;
+
+	/* Multi bssid support only works on corerev >= 9 */
+	if( !wl_ioctl(ifname, WLC_GET_REVINFO, &revinfo, sizeof(revinfo)) )
+	{
+		if( revinfo.corerev >= 9 )
+		{
+			*buf = 1;
+			return 0;
+		}
+	}
+
+	return -1;
+}
+