libiwinfo: probe for vap availability in mbssid_support(), fix return type, fix description string for no crypto

3 files changed, 60 insertions, 19 deletions

diff --git a/contrib/package/iwinfo/src/iwinfo.lua b/contrib/package/iwinfo/src/iwinfo.lua
index 1de43faaf..4a982dd99 100755
--- a/contrib/package/iwinfo/src/iwinfo.lua
+++ b/contrib/package/iwinfo/src/iwinfo.lua
@@ -62,7 +62,10 @@ function print_info(api, dev)
 		n(iw.bitrate(dev)) / 1000)
 
 	printf("          Encryption: %s",
-		s(enc and enc.description))
+		s(enc and enc.description or "None"))
+
+	printf("          Supports VAPs: %s",
+		iw.mbssid_support(dev) and "yes" or "no")
 
 	print("")
 end
@@ -85,7 +88,7 @@ function print_scan(api, dev)
 				s(se.signal), n(se.quality), n(se.quality_max))
 
 			printf("          Encryption: %s",
-				s(se.encryption.description))
+				s(se.encryption.description or "None"))
 
 			print("")
 		end
diff --git a/contrib/package/iwinfo/src/iwinfo_lualib.c b/contrib/package/iwinfo/src/iwinfo_lualib.c
index c87e55917..4309aa129 100644
--- a/contrib/package/iwinfo/src/iwinfo_lualib.c
+++ b/contrib/package/iwinfo/src/iwinfo_lualib.c
@@ -432,6 +432,10 @@ static char * iwinfo_crypto_desc(struct iwinfo_crypto_entry *c)
 						break;
 				}
 			}
+			else
+			{
+				sprintf(desc, "None");
+			}
 		}
 		else
 		{
@@ -694,11 +698,12 @@ static int iwinfo_L_encryption(lua_State *L, int (*func)(const char *, char *))
 		return 1;
 	}
 
-	return 0;
+	lua_pushnil(L);
+	return 1;
 }
 
 /* Wrapper for hwmode list */
-static int iwinfo_L_hwmodelist(lua_State *L, int (*func)(const char*, int *))
+static int iwinfo_L_hwmodelist(lua_State *L, int (*func)(const char *, int *))
 {
 	const char *ifname = luaL_checkstring(L, 1);
 	int hwmodes = 0;
@@ -722,7 +727,24 @@ static int iwinfo_L_hwmodelist(lua_State *L, int (*func)(const char*, int *))
 		return 1;
 	}
 
-	return 0;
+	lua_pushnil(L);
+	return 1;
+}
+
+/* Wrapper for mbbsid_support */
+static int iwinfo_L_mbssid_support(lua_State *L, int (*func)(const char *, int *))
+{
+	const char *ifname = luaL_checkstring(L, 1);
+	int support = 0;
+
+	if( !(*func)(ifname, &support) )
+	{
+		lua_pushboolean(L, support);
+		return 1;
+	}
+
+	lua_pushnil(L);
+	return 1;
 }
 
 /* Wrapper for country list */
@@ -792,7 +814,6 @@ LUA_WRAP_INT(wl,signal)
 LUA_WRAP_INT(wl,noise)
 LUA_WRAP_INT(wl,quality)
 LUA_WRAP_INT(wl,quality_max)
-LUA_WRAP_INT(wl,mbssid_support)
 LUA_WRAP_STRING(wl,mode)
 LUA_WRAP_STRING(wl,ssid)
 LUA_WRAP_STRING(wl,bssid)
@@ -804,6 +825,7 @@ LUA_WRAP_LIST(wl,freqlist)
 LUA_WRAP_LIST(wl,countrylist)
 LUA_WRAP_LIST(wl,hwmodelist)
 LUA_WRAP_LIST(wl,encryption)
+LUA_WRAP_LIST(wl,mbssid_support)
 #endif
 
 #ifdef USE_MADWIFI
@@ -816,7 +838,6 @@ LUA_WRAP_INT(madwifi,signal)
 LUA_WRAP_INT(madwifi,noise)
 LUA_WRAP_INT(madwifi,quality)
 LUA_WRAP_INT(madwifi,quality_max)
-LUA_WRAP_INT(madwifi,mbssid_support)
 LUA_WRAP_STRING(madwifi,mode)
 LUA_WRAP_STRING(madwifi,ssid)
 LUA_WRAP_STRING(madwifi,bssid)
@@ -828,6 +849,7 @@ LUA_WRAP_LIST(madwifi,freqlist)
 LUA_WRAP_LIST(madwifi,countrylist)
 LUA_WRAP_LIST(madwifi,hwmodelist)
 LUA_WRAP_LIST(madwifi,encryption)
+LUA_WRAP_LIST(madwifi,mbssid_support)
 #endif
 
 #ifdef USE_NL80211
@@ -840,7 +862,6 @@ LUA_WRAP_INT(nl80211,signal)
 LUA_WRAP_INT(nl80211,noise)
 LUA_WRAP_INT(nl80211,quality)
 LUA_WRAP_INT(nl80211,quality_max)
-LUA_WRAP_INT(nl80211,mbssid_support)
 LUA_WRAP_STRING(nl80211,mode)
 LUA_WRAP_STRING(nl80211,ssid)
 LUA_WRAP_STRING(nl80211,bssid)
@@ -852,6 +873,7 @@ LUA_WRAP_LIST(nl80211,freqlist)
 LUA_WRAP_LIST(nl80211,countrylist)
 LUA_WRAP_LIST(nl80211,hwmodelist)
 LUA_WRAP_LIST(nl80211,encryption)
+LUA_WRAP_LIST(nl80211,mbssid_support)
 #endif
 
 /* Wext */
@@ -863,7 +885,6 @@ LUA_WRAP_INT(wext,signal)
 LUA_WRAP_INT(wext,noise)
 LUA_WRAP_INT(wext,quality)
 LUA_WRAP_INT(wext,quality_max)
-LUA_WRAP_INT(wext,mbssid_support)
 LUA_WRAP_STRING(wext,mode)
 LUA_WRAP_STRING(wext,ssid)
 LUA_WRAP_STRING(wext,bssid)
@@ -875,6 +896,7 @@ LUA_WRAP_LIST(wext,freqlist)
 LUA_WRAP_LIST(wext,countrylist)
 LUA_WRAP_LIST(wext,hwmodelist)
 LUA_WRAP_LIST(wext,encryption)
+LUA_WRAP_LIST(wext,mbssid_support)
 
 #ifdef USE_WL
 /* Broadcom table */
diff --git a/contrib/package/iwinfo/src/iwinfo_nl80211.c b/contrib/package/iwinfo/src/iwinfo_nl80211.c
index 9cfd21432..adc609f29 100644
--- a/contrib/package/iwinfo/src/iwinfo_nl80211.c
+++ b/contrib/package/iwinfo/src/iwinfo_nl80211.c
@@ -159,7 +159,9 @@ static struct nl80211_msg_conveyor * nl80211_msg(const char *ifname, int cmd, in
 	if( nl80211_init() < 0 )
 		goto err;
 
-	if( !strncmp(ifname, "radio", 5) )
+	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]);
@@ -414,17 +416,20 @@ out:
 
 static char * nl80211_phy2ifname(const char *ifname)
 {
-	int fd, phyidx = 0;
+	int fd, phyidx = -1;
 	char buffer[64];
 	static char nif[IFNAMSIZ] = { 0 };
 
 	DIR *d;
 	struct dirent *e;
 
-	if( !strncmp(ifname, "radio", 5) )
-	{
+	if( !strncmp(ifname, "phy", 3) )
+		phyidx = atoi(&ifname[3]);
+	else if( !strncmp(ifname, "radio", 5) )
 		phyidx = atoi(&ifname[5]);
 
+	if( phyidx > -1 )
+	{
 		if( (d = opendir("/sys/class/net")) != NULL )
 		{
 			while( (e = readdir(d)) != NULL )
@@ -546,7 +551,7 @@ static void nl80211_hostapd_hup(const char *ifname)
 {
 	int fd, pid = 0;
 	char buf[32];
-	char *phy = strncmp(ifname, "phy", 3) ? nl80211_ifname2phy(ifname) : ifname;
+	char *phy = nl80211_ifname2phy(ifname);
 
 	if( phy )
 	{
@@ -1508,8 +1513,8 @@ int nl80211_get_hwmodelist(const char *ifname, int *buf)
 				if( bands[NL80211_BAND_ATTR_HT_CAPA] )
 					caps = nla_get_u16(bands[NL80211_BAND_ATTR_HT_CAPA]);
 
-				/* Treat HT20/HT40 as 11n */
-				if( caps & (1 << 1) )
+				/* Treat any nonzero capability as 11n */
+				if( caps > 0 )
 					*buf |= IWINFO_80211_N;
 
 				nla_for_each_nested(freq,
@@ -1542,7 +1547,18 @@ int nl80211_get_hwmodelist(const char *ifname, int *buf)
 
 int nl80211_get_mbssid_support(const char *ifname, int *buf)
 {
-	/* We assume that multi bssid is always possible */
-	*buf = 1;
-	return 0;
+	/* test whether we can create another interface */
+	char *nif = nl80211_ifadd(ifname);
+
+	if( nif )
+	{
+		*buf = (nl80211_ifmac(nif) && nl80211_ifup(nif));
+
+		nl80211_ifdown(nif);
+		nl80211_ifdel(nif);
+
+		return 0;
+	}
+
+	return -1;
 }