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#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <arpa/inet.h>
#include <lua.h>
#include <lauxlib.h>
#include <lualib.h>
#include "ap_session.h"
#include "ipdb.h"
#include "utils.h"
#include "luasupp.h"
static int mod_cnt;
static const struct lua_session_module **mods;
static int session_ifname(lua_State *L);
static int session_ifindex(lua_State *L);
static int session_sid(lua_State *L);
static int session_uptime(lua_State *L);
static int session_username(lua_State *L);
static int session_type(lua_State *L);
static int session_calling_sid(lua_State *L);
static int session_called_sid(lua_State *L);
static int session_ipv4(lua_State *L);
static int session_ipv6(lua_State *L);
static int session_rx_bytes(lua_State *L);
static int session_tx_bytes(lua_State *L);
static int session_module(lua_State *L);
static const struct luaL_Reg session_lib [] = {
{"ifname", session_ifname},
{"ifindex", session_ifindex},
{"sid", session_sid},
{"uptime", session_uptime},
{"username", session_username},
{"ctrl_type", session_type},
{"calling_sid", session_calling_sid},
{"called_sid", session_called_sid},
{"ipv4", session_ipv4},
{"ipv6", session_ipv6},
{"rx_bytes", session_rx_bytes},
{"tx_bytes", session_tx_bytes},
{"module", session_module},
{NULL, NULL}
};
int __export luaopen_ap_session(lua_State *L)
{
int i;
luaL_newmetatable(L, LUA_AP_SESSION);
lua_pushvalue(L, -1);
lua_setfield(L, -2, "__index");
#if LUA_VERSION_NUM < 502
luaL_register(L, NULL, session_lib);
#else
luaL_setfuncs(L, session_lib, 0);
#endif
for (i = 0; i < mod_cnt; i++)
mods[i]->init(L);
return 1;
}
static int session_ifname(lua_State *L)
{
struct ap_session *ses = luaL_checkudata(L, 1, LUA_AP_SESSION);
if (!ses)
return 0;
lua_pushstring(L, ses->ifname);
return 1;
}
static int session_ifindex(lua_State *L)
{
struct ap_session *ses = luaL_checkudata(L, 1, LUA_AP_SESSION);
if (!ses)
return 0;
lua_pushinteger(L, ses->ifindex);
return 1;
}
static int session_sid(lua_State *L)
{
struct ap_session *ses = luaL_checkudata(L, 1, LUA_AP_SESSION);
if (!ses)
return 0;
lua_pushstring(L, ses->sessionid);
return 1;
}
static int session_uptime(lua_State *L)
{
struct ap_session *ses = luaL_checkudata(L, 1, LUA_AP_SESSION);
time_t t;
if (!ses)
return 0;
t = ses->stop_time ?: _time();
lua_pushinteger(L, t - ses->start_time);
return 1;
}
static int session_username(lua_State *L)
{
struct ap_session *ses = luaL_checkudata(L, 1, LUA_AP_SESSION);
if (!ses)
return 0;
lua_pushstring(L, ses->username);
return 1;
}
static int session_type(lua_State *L)
{
struct ap_session *ses = luaL_checkudata(L, 1, LUA_AP_SESSION);
if (!ses)
return 0;
lua_pushstring(L, ses->ctrl->name);
return 1;
}
static int session_calling_sid(lua_State *L)
{
struct ap_session *ses = luaL_checkudata(L, 1, LUA_AP_SESSION);
if (!ses)
return 0;
lua_pushstring(L, ses->ctrl->calling_station_id);
return 1;
}
static int session_called_sid(lua_State *L)
{
struct ap_session *ses = luaL_checkudata(L, 1, LUA_AP_SESSION);
if (!ses)
return 0;
lua_pushstring(L, ses->ctrl->called_station_id);
return 1;
}
static int session_ipv4(lua_State *L)
{
struct ap_session *ses = luaL_checkudata(L, 1, LUA_AP_SESSION);
char addr1[17], addr2[17];
if (!ses)
return 0;
if (ses->ipv4) {
u_inet_ntoa(ses->ipv4->peer_addr, addr1);
u_inet_ntoa(ses->ipv4->addr, addr2);
lua_pushstring(L, addr1);
lua_pushstring(L, addr2);
return 2;
}
lua_pushnil(L);
return 1;
}
static int session_ipv6(lua_State *L)
{
struct ap_session *ses = luaL_checkudata(L, 1, LUA_AP_SESSION);
struct ipv6db_addr_t *a;
struct in6_addr addr;
char str[64];
if (!ses)
return 0;
if (ses->ipv6 && !list_empty(&ses->ipv6->addr_list)) {
a = list_entry(ses->ipv6->addr_list.next, typeof(*a), entry);
if (a->prefix_len) {
build_ip6_addr(a, ses->ipv6->peer_intf_id, &addr);
inet_ntop(AF_INET6, &addr, str, 64);
sprintf(strchr(str, 0), "/%i", a->prefix_len);
lua_pushstring(L, str);
return 1;
}
}
lua_pushnil(L);
return 1;
}
static int session_rx_bytes(lua_State *L)
{
struct ap_session *ses = luaL_checkudata(L, 1, LUA_AP_SESSION);
uint64_t gword_sz = (uint64_t)UINT32_MAX + 1;
uint64_t bytes;
if (!ses)
return 0;
bytes = gword_sz*ses->acct_input_gigawords + ses->acct_rx_bytes;
lua_pushnumber(L, bytes);
return 1;
}
static int session_tx_bytes(lua_State *L)
{
struct ap_session *ses = luaL_checkudata(L, 1, LUA_AP_SESSION);
uint64_t gword_sz = (uint64_t)UINT32_MAX + 1;
uint64_t bytes;
if (!ses)
return 0;
bytes = gword_sz*ses->acct_output_gigawords + ses->acct_tx_bytes;
lua_pushnumber(L, bytes);
return 1;
}
static int session_module(lua_State *L)
{
int i;
struct ap_session *ses = luaL_checkudata(L, 1, LUA_AP_SESSION);
const char *name;
if (!ses)
return 0;
name = luaL_checkstring(L, 2);
if (!name)
return 0;
for (i = 0; i < mod_cnt; i++) {
if (strcmp(name, mods[i]->name) == 0)
return mods[i]->get_instance(L, ses);
}
lua_pushnil(L);
return 1;
}
void __export lua_session_module_register(const struct lua_session_module *mod)
{
char *mods_new;
if (!mods)
mods_new = malloc(sizeof(void *));
else
mods_new = realloc(mods, (mod_cnt + 1) * sizeof(void *));
if (mods_new) {
mods = mods_new;
mods[mod_cnt++] = mod;
} else {
log_emerg("lua: out of memory\n");
}
}
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