libs/luanet: add wifi channel enumeration

This commit is contained in:
Jo-Philipp Wich 2009-05-09 17:55:24 +00:00
parent 011a89028c
commit 64600a27ee
4 changed files with 65 additions and 0 deletions

View file

@ -13,6 +13,7 @@
*
* Copyright (C) 2008 John Crispin <blogic@openwrt.org>
* Copyright (C) 2008 Steven Barth <steven@midlink.org>
* Copyright (C) 2009 Jo-Philipp Wich <xm@subsignal.org>
*/
#include <net/if.h>
@ -827,3 +828,54 @@ realloc:
free(buffer);
return 0;
}
int iwc_frequencies(lua_State *L)
{
int i;
int has_range;
char *ifname;
struct iw_range range;
if(lua_gettop(L) != 1)
{
lua_pushstring(L, "invalid arg list");
lua_error(L);
return 0;
}
ifname = (char *)lua_tostring (L, 1);
/* Get range stuff */
has_range = (iw_get_range_info(sock_iwconfig, ifname, &range) >= 0);
/* Check if the interface could support scanning. */
if((!has_range) || (range.we_version_compiled < 14))
{
lua_pushstring(L, "interface does not support frequency enumeration");
lua_error(L);
}
else
{
lua_newtable(L);
for(i = 0; i < range.num_frequency; i++)
{
lua_pushnumber(L, i + 1);
lua_newtable(L);
lua_pushinteger(L, 1);
lua_pushinteger(L, (int)range.freq[i].i);
lua_settable(L, -3);
lua_pushinteger(L, 2);
lua_pushnumber(L, iw_freq2float(&(range.freq[i])));
lua_settable(L, -3);
lua_settable(L, -3);
}
return 1;
}
return 0;
}

View file

@ -13,6 +13,7 @@
*
* Copyright (C) 2008 John Crispin <blogic@openwrt.org>
* Copyright (C) 2008 Steven Barth <steven@midlink.org>
* Copyright (C) 2009 Jo-Philipp Wich <xm@subsignal.org>
*/
#ifndef _IWCONFIG_H__
@ -25,4 +26,5 @@ int iwc_set_essid(lua_State *L);
int iwc_set_mode(lua_State *L);
int iwc_set_channel(lua_State *L);
int iwc_scan(lua_State *L);
int iwc_frequencies(lua_State *L);
#endif

View file

@ -13,6 +13,7 @@
*
* Copyright (C) 2008 John Crispin <blogic@openwrt.org>
* Copyright (C) 2008 Steven Barth <steven@midlink.org>
* Copyright (C) 2009 Jo-Philipp Wich <xm@subsignal.org>
*/
#include <stdio.h>
@ -63,6 +64,7 @@ static luaL_reg func[] = {
{"iwc_set_mode", iwc_set_mode},
{"iwc_set_channel", iwc_set_channel},
{"iwc_scan", iwc_scan},
{"iwc_frequencies", iwc_frequencies},
{"vlan_getall", vlan_getall},
{"vlan_add", vlan_add},
{"vlan_del", vlan_del},

View file

@ -93,6 +93,15 @@ if scan then
end
end
end
local freq = luanet.iwc_frequencies("wlan0")
print("\nfrequencies on wlan0")
if freq then
for _,f in ipairs(freq) do
print(" channel -> "..f[1])
print(" frequency -> "..f[2])
print("")
end
end
print("\n\n---vlan---\n")