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/*!A cross-platform build utility based on Lua
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Copyright (C) 2015-present, TBOOX Open Source Group.
*
* @author ruki
* @file socket_recvfrom.c
*
*/
/* //////////////////////////////////////////////////////////////////////////////////////
* trace
*/
#define TB_TRACE_MODULE_NAME "socket_recvfrom"
#define TB_TRACE_MODULE_DEBUG (0)
/* //////////////////////////////////////////////////////////////////////////////////////
* includes
*/
#include "prefix.h"
/* //////////////////////////////////////////////////////////////////////////////////////
* implementation
*/
// real, data_or_errors, addr, port = io.socket_recvfrom(sock, size)
tb_int_t xm_io_socket_recvfrom(lua_State* lua)
{
// check
tb_assert_and_check_return_val(lua, 0);
// check socket
if (!xm_lua_ispointer(lua, 1))
{
lua_pushinteger(lua, -1);
lua_pushliteral(lua, "invalid socket!");
return 2;
}
// get socket
tb_socket_ref_t sock = (tb_socket_ref_t)xm_lua_topointer(lua, 1);
tb_check_return_val(sock, 0);
// get data
tb_byte_t* data = tb_null;
if (xm_lua_isinteger(lua, 2))
data = (tb_byte_t*)(tb_size_t)(tb_long_t)lua_tointeger(lua, 2);
if (!data)
{
lua_pushinteger(lua, -1);
lua_pushfstring(lua, "invalid data(%p)!", data);
return 2;
}
tb_assert_static(sizeof(lua_Integer) >= sizeof(tb_pointer_t));
// get size
tb_long_t size = 0;
if (xm_lua_isinteger(lua, 3)) size = (tb_long_t)lua_tointeger(lua, 3);
if (size <= 0)
{
lua_pushinteger(lua, -1);
lua_pushfstring(lua, "invalid size(%d)!", (tb_int_t)size);
return 2;
}
// recv data
tb_ipaddr_t ipaddr;
tb_ipaddr_clear(&ipaddr);
tb_int_t retn = 1;
tb_long_t real = tb_socket_urecv(sock, &ipaddr, data, size);
lua_pushinteger(lua, (tb_int_t)real);
if (real > 0)
{
retn = 2;
lua_pushnil(lua);
if (!tb_ipaddr_is_empty(&ipaddr))
{
tb_char_t buffer[256];
tb_char_t const* ipstr = tb_ipaddr_ip_cstr(&ipaddr, buffer, sizeof(buffer));
if (ipstr)
{
lua_pushstring(lua, ipstr);
lua_pushinteger(lua, (tb_int_t)tb_ipaddr_port(&ipaddr));
retn = 4;
}
}
}
return retn;
}
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