2 * nixio - Linux I/O library for lua
4 * Copyright (C) 2011 Jo-Philipp Wich <jow@openwrt.org>
6 * Licensed under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
10 * http://www.apache.org/licenses/LICENSE-2.0
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
26 * protoent conversion helper
28 static int nixio__pushprotoent(lua_State
*L
, struct protoent
*e
) {
33 lua_pushstring(L
, e
->p_name
);
34 lua_setfield(L
, -2, "name");
36 lua_pushnumber(L
, e
->p_proto
);
37 lua_setfield(L
, -2, "proto");
40 for (i
= 0; e
->p_aliases
[i
]; i
++) {
41 lua_pushstring(L
, e
->p_aliases
[i
]);
42 lua_rawseti(L
, -2, i
+1);
44 lua_setfield(L
, -2, "aliases");
52 * getprotobyname(name)
54 static int nixio_getprotobyname(lua_State
*L
) {
55 const char *name
= luaL_checkstring(L
, 1);
56 struct protoent
*res
= getprotobyname(name
);
57 return nixio__pushprotoent(L
, res
);
61 * getprotobynumber(proto)
63 static int nixio_getprotobynumber(lua_State
*L
) {
64 int proto
= luaL_checkinteger(L
, 1);
65 struct protoent
*res
= getprotobynumber(proto
);
66 return nixio__pushprotoent(L
, res
);
70 * getproto(name_or_proto)
72 static int nixio_getproto(lua_State
*L
) {
75 if (lua_isnumber(L
, 1)) {
76 return nixio_getprotobynumber(L
);
77 } else if (lua_isstring(L
, 1)) {
78 return nixio_getprotobyname(L
);
79 } else if (lua_isnoneornil(L
, 1)) {
82 while ((res
= getprotoent()) != NULL
) {
83 nixio__pushprotoent(L
, res
);
84 lua_rawseti(L
, -2, i
++);
89 return luaL_argerror(L
, 1, "supported values: <protoname>, <protonumber>");
94 static const luaL_reg R
[] = {
95 {"getprotobyname", nixio_getprotobyname
},
96 {"getprotobynumber", nixio_getprotobynumber
},
97 {"getproto", nixio_getproto
},
101 void nixio_open_protoent(lua_State
*L
) {
102 luaL_register(L
, NULL
, R
);