libs/nixio: add missing file in previous commit, revert unrelated change

1 files changed, 103 insertions, 0 deletions

diff --git a/libs/nixio/src/protoent.c b/libs/nixio/src/protoent.c
new file mode 100644
index 000000000..bda68a584
--- /dev/null
+++ b/libs/nixio/src/protoent.c
@@ -0,0 +1,103 @@
+/*
+ * nixio - Linux I/O library for lua
+ *
+ *   Copyright (C) 2011 Jo-Philipp Wich <jow@openwrt.org>
+ *
+ *  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.
+ */
+
+#include "nixio.h"
+
+#ifndef __WINNT__
+#include <netdb.h>
+#endif
+
+/**
+ * protoent conversion helper
+ */
+static int nixio__pushprotoent(lua_State *L, struct protoent *e) {
+	int i;
+	if (e) {
+		lua_newtable(L);
+
+		lua_pushstring(L, e->p_name);
+		lua_setfield(L, -2, "name");
+
+		lua_pushnumber(L, e->p_proto);
+		lua_setfield(L, -2, "proto");
+
+		lua_newtable(L);
+		for (i = 0; e->p_aliases[i]; i++) {
+			lua_pushstring(L, e->p_aliases[i]);
+			lua_rawseti(L, -2, i+1);
+		}
+		lua_setfield(L, -2, "aliases");
+		return 1;
+	} else {
+		return 0;
+	}
+}
+
+/**
+ * getprotobyname(name)
+ */
+static int nixio_getprotobyname(lua_State *L) {
+	const char *name = luaL_checkstring(L, 1);
+	struct protoent *res = getprotobyname(name);
+	return nixio__pushprotoent(L, res);
+}
+
+/**
+ * getprotobynumber(proto)
+ */
+static int nixio_getprotobynumber(lua_State *L) {
+	int proto = luaL_checkinteger(L, 1);
+	struct protoent *res = getprotobynumber(proto);
+	return nixio__pushprotoent(L, res);
+}
+
+/**
+ * getproto(name_or_proto)
+ */
+static int nixio_getproto(lua_State *L) {
+	int i = 1;
+	struct protoent *res;
+	if (lua_isnumber(L, 1)) {
+		return nixio_getprotobynumber(L);
+	} else if (lua_isstring(L, 1)) {
+		return nixio_getprotobyname(L);
+	} else if (lua_isnoneornil(L, 1)) {
+		setprotoent(1);
+		lua_newtable(L);
+		while ((res = getprotoent()) != NULL) {
+			nixio__pushprotoent(L, res);
+			lua_rawseti(L, -2, i++);
+		}
+		endprotoent();
+		return 1;
+	} else {
+		return luaL_argerror(L, 1, "supported values: <protoname>, <protonumber>");
+	}
+}
+
+/* module table */
+static const luaL_reg R[] = {
+    {"getprotobyname",		nixio_getprotobyname},
+    {"getprotobynumber",	nixio_getprotobynumber},
+    {"getproto",			nixio_getproto},
+    {NULL,					NULL}
+};
+
+void nixio_open_protoent(lua_State *L) {
+    luaL_register(L, NULL, R);
+}