2 * nixio - Linux I/O library for lua
4 * Copyright (C) 2009 Steven Barth <steven@midlink.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.
20 #include <sys/types.h>
23 #include <sys/param.h>
35 int nixio__check_group(lua_State *L, int idx) {
36 if (lua_isnumber(L, idx)) {
37 return lua_tointeger(L, idx);
38 } else if (lua_isstring(L, idx)) {
39 struct group *g = getgrnam(lua_tostring(L, idx));
40 return (!g) ? -1 : g->gr_gid;
42 return luaL_argerror(L, idx, "supported values: <groupname>, <gid>");
46 int nixio__check_user(lua_State *L, int idx) {
47 if (lua_isnumber(L, idx)) {
48 return lua_tointeger(L, idx);
49 } else if (lua_isstring(L, idx)) {
50 struct passwd *p = getpwnam(lua_tostring(L, idx));
51 return (!p) ? -1 : p->pw_uid;
53 return luaL_argerror(L, idx, "supported values: <username>, <uid>");
58 static int nixio__push_group(lua_State *L, struct group *gr) {
59 lua_createtable(L, 0, 4);
60 lua_pushstring(L, gr->gr_name);
61 lua_setfield(L, -2, "name");
62 lua_pushstring(L, gr->gr_passwd);
63 lua_setfield(L, -2, "passwd");
64 lua_pushinteger(L, gr->gr_gid);
65 lua_setfield(L, -2, "gid");
68 for (int i=0; gr->gr_mem[i]; i++) {
69 lua_pushstring(L, gr->gr_mem[i]);
70 lua_rawseti(L, -2, i+1);
73 lua_setfield(L, -2, "mem");
77 static int nixio_getgr(lua_State *L) {
80 if (lua_isnumber(L, 1)) {
81 gr = getgrgid(lua_tointeger(L, 1));
82 } else if (lua_isstring(L, 1)) {
83 gr = getgrnam(lua_tostring(L, 1));
84 } else if (lua_isnoneornil(L, 1)) {
89 while ((gr = getgrent())) {
90 nixio__push_group(L, gr);
91 lua_rawseti(L, -2, ++i);
95 return nixio__perror(L);
101 return luaL_argerror(L, 1, "supported values: <groupname>, <gid>");
105 return nixio__perror(L);
107 return nixio__push_group(L, gr);
111 static int nixio__push_passwd(lua_State *L, struct passwd *pw) {
112 lua_createtable(L, 0, 7);
113 lua_pushstring(L, pw->pw_name);
114 lua_setfield(L, -2, "name");
115 lua_pushstring(L, pw->pw_passwd);
116 lua_setfield(L, -2, "passwd");
117 lua_pushinteger(L, pw->pw_gid);
118 lua_setfield(L, -2, "gid");
119 lua_pushinteger(L, pw->pw_uid);
120 lua_setfield(L, -2, "uid");
121 lua_pushstring(L, pw->pw_dir);
122 lua_setfield(L, -2, "dir");
123 lua_pushstring(L, pw->pw_gecos);
124 lua_setfield(L, -2, "gecos");
125 lua_pushstring(L, pw->pw_shell);
126 lua_setfield(L, -2, "shell");
130 static int nixio_getpw(lua_State *L) {
133 if (lua_isnumber(L, 1)) {
134 pw = getpwuid(lua_tointeger(L, 1));
135 } else if (lua_isstring(L, 1)) {
136 pw = getpwnam(lua_tostring(L, 1));
137 } else if (lua_isnoneornil(L, 1)) {
142 while ((pw = getpwent())) {
143 nixio__push_passwd(L, pw);
144 lua_rawseti(L, -2, ++i);
148 return nixio__perror(L);
154 return luaL_argerror(L, 1, "supported values: <username>, <uid>");
158 return nixio__perror(L);
160 return nixio__push_passwd(L, pw);
165 static int nixio__push_spwd(lua_State *L, struct spwd *sp) {
166 lua_createtable(L, 0, 9);
167 lua_pushstring(L, sp->sp_namp);
168 lua_setfield(L, -2, "namp");
169 lua_pushinteger(L, sp->sp_expire);
170 lua_setfield(L, -2, "expire");
171 lua_pushinteger(L, sp->sp_flag);
172 lua_setfield(L, -2, "flag");
173 lua_pushinteger(L, sp->sp_inact);
174 lua_setfield(L, -2, "inact");
175 lua_pushinteger(L, sp->sp_lstchg);
176 lua_setfield(L, -2, "lstchg");
177 lua_pushinteger(L, sp->sp_max);
178 lua_setfield(L, -2, "max");
179 lua_pushinteger(L, sp->sp_min);
180 lua_setfield(L, -2, "min");
181 lua_pushinteger(L, sp->sp_warn);
182 lua_setfield(L, -2, "warn");
183 lua_pushstring(L, sp->sp_pwdp);
184 lua_setfield(L, -2, "pwdp");
188 static int nixio_getsp(lua_State *L) {
191 if (lua_isstring(L, 1)) {
192 sp = getspnam(lua_tostring(L, 1));
193 } else if (lua_isnoneornil(L, 1)) {
198 while ((sp = getspent())) {
199 nixio__push_spwd(L, sp);
200 lua_rawseti(L, -2, ++i);
204 return nixio__perror(L);
210 return luaL_argerror(L, 1, "supported values: <username>");
214 return nixio__perror(L);
216 return nixio__push_spwd(L, sp);
221 static int nixio_crypt(lua_State *L) {
222 const char *key = luaL_checkstring(L, 1);
223 const char *salt = luaL_checkstring(L, 2);
224 const char *hash = crypt(key, salt);
227 lua_pushstring(L, hash);
237 static const luaL_reg R[] = {
238 {"crypt", nixio_crypt},
239 {"getgr", nixio_getgr},
240 {"getpw", nixio_getpw},
242 {"getsp", nixio_getsp},
247 #else /* __WINNT__ */
249 static const luaL_reg R[] = {
255 void nixio_open_user(lua_State *L) {
256 luaL_register(L, NULL, R);