2 * libuci plugin for Lua
3 * Copyright (C) 2008 Felix Fietkau <nbd@openwrt.org>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2
7 * as published by the Free Software Foundation
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
15 #include <sys/types.h>
30 #define DPRINTF(...) fprintf(stderr, __VA_ARGS__)
32 #define DPRINTF(...) do {} while (0)
35 static struct uci_context
*ctx
= NULL
;
37 static struct uci_package
*
38 find_package(const char *name
)
40 struct uci_package
*p
= NULL
;
41 struct uci_element
*e
;
42 uci_foreach_element(&ctx
->root
, e
) {
43 if (strcmp(e
->name
, name
) != 0)
46 p
= uci_to_package(e
);
52 static void uci_lua_perror(lua_State
*L
, char *name
)
54 lua_getfield(L
, LUA_GLOBALSINDEX
, "uci");
55 lua_getfield(L
, -1, "warn");
56 if (!lua_isboolean(L
, -1))
58 if (lua_toboolean(L
, -1) != 1)
60 uci_perror(ctx
, name
);
66 uci_lua_unload(lua_State
*L
)
68 struct uci_package
*p
;
71 luaL_checkstring(L
, 1);
72 s
= lua_tostring(L
, -1);
76 lua_pushboolean(L
, 1);
78 lua_pushboolean(L
, 0);
84 uci_lua_load(lua_State
*L
)
86 struct uci_package
*p
= NULL
;
90 lua_pop(L
, 1); /* bool ret value of unload */
91 s
= lua_tostring(L
, -1);
93 if (uci_load(ctx
, s
, &p
)) {
94 uci_lua_perror(L
, "uci.load");
95 lua_pushboolean(L
, 0);
97 lua_pushboolean(L
, 1);
104 uci_lua_get(lua_State
*L
)
106 struct uci_element
*e
= NULL
;
107 struct uci_package
*p
= NULL
;
108 char *package
= NULL
;
109 char *section
= NULL
;
112 int err
= UCI_ERR_MEM
;
114 luaL_checkstring(L
, 1);
115 s
= strdup(lua_tostring(L
, -1));
119 if ((err
= uci_parse_tuple(ctx
, s
, &package
, §ion
, &option
, NULL
)))
122 if (section
== NULL
) {
127 p
= find_package(package
);
129 err
= UCI_ERR_NOTFOUND
;
133 if ((err
= uci_lookup(ctx
, &e
, p
, section
, option
)))
137 case UCI_TYPE_SECTION
:
138 lua_pushstring(L
, uci_to_section(e
)->type
);
140 case UCI_TYPE_OPTION
:
141 lua_pushstring(L
, uci_to_option(e
)->value
);
154 uci_lua_perror(L
, "uci.get");
156 case UCI_ERR_NOTFOUND
:
166 uci_lua_set(lua_State
*L
)
168 struct uci_package
*p
;
169 char *package
= NULL
;
170 char *section
= NULL
;
174 int err
= UCI_ERR_MEM
;
176 luaL_checkstring(L
, 1);
177 s
= strdup(lua_tostring(L
, -1));
181 if ((err
= uci_parse_tuple(ctx
, s
, &package
, §ion
, &option
, &value
)))
184 if ((section
== NULL
) || (value
== NULL
)) {
189 p
= find_package(package
);
191 err
= UCI_ERR_NOTFOUND
;
194 err
= uci_set(ctx
, p
, section
, option
, value
, NULL
);
198 uci_lua_perror(L
, "uci.set");
199 lua_pushboolean(L
, (err
== 0));
204 uci_lua_commit(lua_State
*L
)
206 struct uci_element
*e
, *tmp
;
207 const char *s
= NULL
;
210 if (!lua_isnoneornil(L
, -1)) {
211 luaL_checkstring(L
, 1);
212 s
= lua_tostring(L
, -1);
215 uci_foreach_element_safe(&ctx
->root
, tmp
, e
) {
216 struct uci_package
*p
= uci_to_package(e
);
218 if (s
&& (strcmp(s
, e
->name
) != 0))
221 if (uci_commit(ctx
, &p
, false) != 0)
224 lua_pushboolean(L
, !failed
);
229 uci_lua_save(lua_State
*L
)
231 struct uci_element
*e
;
232 const char *s
= NULL
;
235 if (!lua_isnoneornil(L
, -1)) {
236 luaL_checkstring(L
, 1);
237 s
= lua_tostring(L
, -1);
240 uci_foreach_element(&ctx
->root
, e
) {
241 if (s
&& (strcmp(s
, e
->name
) != 0))
244 if (uci_save(ctx
, uci_to_package(e
)) != 0)
247 lua_pushboolean(L
, !failed
);
252 uci_lua_set_confdir(lua_State
*L
)
256 luaL_checkstring(L
, 1);
257 ret
= uci_set_confdir(ctx
, lua_tostring(L
, -1));
258 lua_pushboolean(L
, (ret
== 0));
263 uci_lua_set_savedir(lua_State
*L
)
267 luaL_checkstring(L
, 1);
268 ret
= uci_set_savedir(ctx
, lua_tostring(L
, -1));
269 lua_pushboolean(L
, (ret
== 0));
274 static const luaL_Reg uci
[] = {
275 { "load", uci_lua_load
},
276 { "unload", uci_lua_unload
},
277 { "get", uci_lua_get
},
278 { "set", uci_lua_set
},
279 { "save", uci_lua_save
},
280 { "commit", uci_lua_commit
},
281 { "set_confdir", uci_lua_set_confdir
},
282 { "set_savedir", uci_lua_set_savedir
},
288 luaopen_uci(lua_State
*L
)
290 ctx
= uci_alloc_context();
292 luaL_error(L
, "Cannot allocate UCI context\n");
293 luaL_register(L
, MODNAME
, uci
);