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zapret-pcap.lua

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bol-van
2025-11-26 15:30:10 +03:00
parent 1cfec4d737
commit 9eaf346253
4 changed files with 80 additions and 1 deletions
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44
nfq2/lua.c
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@@ -188,6 +188,26 @@ static int luacall_u32(lua_State *L)
lua_pushinteger(L,pntoh32(p+offset));
return 1;
}
static int luacall_swap16(lua_State *L)
{
lua_check_argc(L,"swap16",1);
lua_Integer i = luaL_checkinteger(L,1);
uint16_t u = (uint16_t)i;
if (i!=u) luaL_error(L, "out of range");
lua_pushinteger(L,__builtin_bswap16(u));
return 1;
}
static int luacall_swap32(lua_State *L)
{
lua_check_argc(L,"swap32",1);
lua_Integer i = luaL_checkinteger(L,1);
uint32_t u = (uint32_t)i;
if (i!=u) luaL_error(L, "out of range");
lua_pushinteger(L,__builtin_bswap32(u));
return 1;
}
static int luacall_bu8(lua_State *L)
{
lua_check_argc(L,"bu8",1);
@@ -548,7 +568,25 @@ static int luacall_uname(lua_State *L)
}
LUA_STACK_GUARD_RETURN(L,1)
}
static int luacall_clock_gettime(lua_State *L)
{
lua_check_argc(L,"uname", 0);
LUA_STACK_GUARD_ENTER(L)
struct timespec ts;
if (clock_gettime(CLOCK_REALTIME, &ts))
{
lua_pushnil(L);
lua_pushnil(L);
}
else
{
lua_pushinteger(L, ts.tv_sec);
lua_pushinteger(L, ts.tv_nsec);
}
LUA_STACK_GUARD_RETURN(L,2)
}
static int luacall_instance_cutoff(lua_State *L)
{
// out : func_name.profile_number[0]
@@ -2729,11 +2767,14 @@ static void lua_init_functions(void)
{"u16",luacall_u16},
{"u24",luacall_u24},
{"u32",luacall_u32},
// convert number to blob (string)
// convert number to blob (string) - big endian
{"bu8",luacall_bu8},
{"bu16",luacall_bu16},
{"bu24",luacall_bu24},
{"bu32",luacall_bu32},
// swap byte order
{"swap16",luacall_swap16},
{"swap32",luacall_swap32},
// integer division
{"divint",luacall_divint},
@@ -2762,6 +2803,7 @@ static void lua_init_functions(void)
// get raw packet data
{"raw_packet",luacall_raw_packet},
{"uname",luacall_uname},
{"clock_gettime",luacall_clock_gettime},
// convert table representation to blob or vise versa
{"reconstruct_tcphdr",luacall_reconstruct_tcphdr},