libs/luanet: add wifi channel enumeration
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011a89028c
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4 changed files with 65 additions and 0 deletions
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@ -13,6 +13,7 @@
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*
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* Copyright (C) 2008 John Crispin <blogic@openwrt.org>
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* Copyright (C) 2008 Steven Barth <steven@midlink.org>
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* Copyright (C) 2009 Jo-Philipp Wich <xm@subsignal.org>
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*/
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#include <net/if.h>
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@ -827,3 +828,54 @@ realloc:
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free(buffer);
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return 0;
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}
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int iwc_frequencies(lua_State *L)
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{
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int i;
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int has_range;
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char *ifname;
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struct iw_range range;
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if(lua_gettop(L) != 1)
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{
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lua_pushstring(L, "invalid arg list");
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lua_error(L);
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return 0;
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}
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ifname = (char *)lua_tostring (L, 1);
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/* Get range stuff */
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has_range = (iw_get_range_info(sock_iwconfig, ifname, &range) >= 0);
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/* Check if the interface could support scanning. */
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if((!has_range) || (range.we_version_compiled < 14))
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{
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lua_pushstring(L, "interface does not support frequency enumeration");
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lua_error(L);
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}
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else
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{
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lua_newtable(L);
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for(i = 0; i < range.num_frequency; i++)
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{
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lua_pushnumber(L, i + 1);
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lua_newtable(L);
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lua_pushinteger(L, 1);
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lua_pushinteger(L, (int)range.freq[i].i);
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lua_settable(L, -3);
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lua_pushinteger(L, 2);
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lua_pushnumber(L, iw_freq2float(&(range.freq[i])));
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lua_settable(L, -3);
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lua_settable(L, -3);
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}
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return 1;
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}
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return 0;
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}
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@ -13,6 +13,7 @@
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*
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* Copyright (C) 2008 John Crispin <blogic@openwrt.org>
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* Copyright (C) 2008 Steven Barth <steven@midlink.org>
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* Copyright (C) 2009 Jo-Philipp Wich <xm@subsignal.org>
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*/
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#ifndef _IWCONFIG_H__
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@ -25,4 +26,5 @@ int iwc_set_essid(lua_State *L);
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int iwc_set_mode(lua_State *L);
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int iwc_set_channel(lua_State *L);
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int iwc_scan(lua_State *L);
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int iwc_frequencies(lua_State *L);
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#endif
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@ -13,6 +13,7 @@
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*
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* Copyright (C) 2008 John Crispin <blogic@openwrt.org>
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* Copyright (C) 2008 Steven Barth <steven@midlink.org>
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* Copyright (C) 2009 Jo-Philipp Wich <xm@subsignal.org>
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*/
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#include <stdio.h>
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@ -63,6 +64,7 @@ static luaL_reg func[] = {
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{"iwc_set_mode", iwc_set_mode},
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{"iwc_set_channel", iwc_set_channel},
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{"iwc_scan", iwc_scan},
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{"iwc_frequencies", iwc_frequencies},
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{"vlan_getall", vlan_getall},
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{"vlan_add", vlan_add},
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{"vlan_del", vlan_del},
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@ -93,6 +93,15 @@ if scan then
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end
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end
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end
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local freq = luanet.iwc_frequencies("wlan0")
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print("\nfrequencies on wlan0")
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if freq then
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for _,f in ipairs(freq) do
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print(" channel -> "..f[1])
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print(" frequency -> "..f[2])
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print("")
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end
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end
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print("\n\n---vlan---\n")
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