pretty sure 'secure' doesnt actually exist as a cvar.. try it in hlsw rcon.. it doesnt do anything
only place i can think of that shows if its secure or not in the console is the status command.. maybe get all that data (or just part of it) and check if it contains secure or insecure (or whatever status command shows for an insecure server)
*EDIT*
ok i just threw this together.. seems to work when i try it on a local server..
typing amx_checkvac should print in your chat if vac is enabled or disabled.. so this might actually be a method you could use to get its status
#include <amxmodx>
#define VERSION "1.0"
public plugin_init()
{
register_plugin("Check VAC",VERSION,"diamond-optic")
register_cvar("amx_checkvac_stats",VERSION,FCVAR_SERVER|FCVAR_SPONLY)
register_concmd("amx_checkvac","amx_checkvac",0,"- Check if VAC is enabled")
}
public amx_checkvac(id)
{
new data[512] //register the variable
get_cvar_string("status",data,511) //get what the status cmd says
if(containi(data,"insecure")) //check if its insecure first
client_print(id,print_chat,"VAC DISABLED!")
else if(containi(data,"secure")) //then check if its secure
client_print(id,print_chat,"VAC ENABLED!")
else //it didnt get either
client_print(id,print_chat,"VAC STATUS UNKNOWN")
return PLUGIN_HANDLED //end the command
}
*edit* ^ that code doesnt work :(