1535f56437ee06ac41ea99ad5c15275e16cb1464
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>
31 #define DPRINTF(...) fprintf(stderr, __VA_ARGS__)
33 #define DPRINTF(...) do {} while (0)
36 static struct uci_context
*ctx
= NULL
;
43 static struct uci_package
*
44 find_package(lua_State
*L
, const char *name
, enum autoload al
)
46 struct uci_package
*p
= NULL
;
47 struct uci_element
*e
;
49 uci_foreach_element(&ctx
->root
, e
) {
50 if (strcmp(e
->name
, name
) != 0)
53 p
= uci_to_package(e
);
57 if (al
== AUTOLOAD_FORCE
)
58 uci_load(ctx
, name
, &p
);
61 lua_getfield(L
, LUA_GLOBALSINDEX
, "uci");
62 lua_getfield(L
, -1, "autoload");
63 if (!lua_isboolean(L
, -1))
66 if (!lua_toboolean(L
, -1))
69 uci_load(ctx
, name
, &p
);
78 static void uci_lua_perror(lua_State
*L
, char *name
)
80 lua_getfield(L
, LUA_GLOBALSINDEX
, "uci");
81 lua_getfield(L
, -1, "warn");
82 if (!lua_isboolean(L
, -1))
84 if (lua_toboolean(L
, -1) != 1)
86 uci_perror(ctx
, name
);
91 static void uci_push_section(lua_State
*L
, struct uci_section
*s
)
93 struct uci_element
*e
;
96 lua_pushstring(L
, s
->type
);
97 lua_setfield(L
, -2, ".type");
98 lua_pushstring(L
, s
->e
.name
);
99 lua_setfield(L
, -2, ".name");
101 uci_foreach_element(&s
->options
, e
) {
102 struct uci_option
*o
= uci_to_option(e
);
104 case UCI_TYPE_STRING
:
105 lua_pushstring(L
, o
->v
.string
);
106 lua_setfield(L
, -2, o
->e
.name
);
109 /* nothing to do yet */
115 static void uci_push_package(lua_State
*L
, struct uci_package
*p
)
117 struct uci_element
*e
;
121 uci_foreach_element(&p
->sections
, e
) {
123 uci_push_section(L
, uci_to_section(e
));
124 lua_setfield(L
, -2, e
->name
);
129 uci_lua_unload(lua_State
*L
)
131 struct uci_package
*p
;
134 luaL_checkstring(L
, 1);
135 s
= lua_tostring(L
, -1);
136 p
= find_package(L
, s
, AUTOLOAD_OFF
);
139 lua_pushboolean(L
, 1);
141 lua_pushboolean(L
, 0);
147 uci_lua_load(lua_State
*L
)
149 struct uci_package
*p
= NULL
;
153 lua_pop(L
, 1); /* bool ret value of unload */
154 s
= lua_tostring(L
, -1);
156 if (uci_load(ctx
, s
, &p
)) {
157 uci_lua_perror(L
, "uci.load");
158 lua_pushboolean(L
, 0);
160 lua_pushboolean(L
, 1);
168 uci_lua_foreach(lua_State
*L
)
170 struct uci_package
*p
;
171 struct uci_element
*e
;
172 const char *package
, *type
;
175 package
= luaL_checkstring(L
, 1);
180 type
= luaL_checkstring(L
, 2);
182 if (!lua_isfunction(L
, 3) || !package
)
183 luaL_error(L
, "Invalid argument");
185 p
= find_package(L
, package
, AUTOLOAD_ON
);
189 uci_foreach_element(&p
->sections
, e
) {
190 struct uci_section
*s
= uci_to_section(e
);
192 if (type
&& (strcmp(s
->type
, type
) != 0))
195 lua_pushvalue(L
, 3); /* iterator function */
196 uci_push_section(L
, s
);
197 if (lua_pcall(L
, 1, 0, 0) == 0)
202 lua_pushboolean(L
, ret
);
207 uci_lua_get_any(lua_State
*L
, bool all
)
209 struct uci_element
*e
= NULL
;
210 struct uci_package
*p
= NULL
;
211 struct uci_option
*o
= NULL
;
212 const char *package
= NULL
;
213 const char *section
= NULL
;
214 const char *option
= NULL
;
216 int err
= UCI_ERR_MEM
;
221 luaL_checkstring(L
, 1);
222 s
= strdup(lua_tostring(L
, 1));
227 package
= luaL_checkstring(L
, 1);
228 section
= luaL_checkstring(L
, 2);
230 option
= luaL_checkstring(L
, 3);
232 if ((err
= uci_parse_tuple(ctx
, s
, (char **) &package
, (char **) §ion
, (char **) &option
, NULL
)))
236 if (!all
&& (section
== NULL
)) {
241 p
= find_package(L
, package
, AUTOLOAD_ON
);
243 err
= UCI_ERR_NOTFOUND
;
248 if ((err
= uci_lookup(ctx
, &e
, p
, section
, option
)))
255 case UCI_TYPE_PACKAGE
:
256 uci_push_package(L
, p
);
258 case UCI_TYPE_SECTION
:
260 uci_push_section(L
, uci_to_section(e
));
262 lua_pushstring(L
, uci_to_section(e
)->type
);
264 case UCI_TYPE_OPTION
:
265 o
= uci_to_option(e
);
267 case UCI_TYPE_STRING
:
268 lua_pushstring(L
, o
->v
.string
);
271 /* nothing to do yet */
286 uci_lua_perror(L
, "uci.get");
288 case UCI_ERR_NOTFOUND
:
297 uci_lua_get(lua_State
*L
)
299 return uci_lua_get_any(L
, false);
303 uci_lua_get_all(lua_State
*L
)
305 return uci_lua_get_any(L
, true);
309 uci_lua_add(lua_State
*L
)
311 struct uci_section
*s
= NULL
;
312 struct uci_package
*p
;
315 const char *name
= NULL
;
318 package
= luaL_checkstring(L
, 1);
319 type
= luaL_checkstring(L
, 2);
320 p
= find_package(L
, package
, AUTOLOAD_ON
);
324 if (uci_add_section(ctx
, p
, type
, &s
) || !s
)
330 lua_pushstring(L
, name
);
335 uci_lua_delete(lua_State
*L
)
337 const char *package
= NULL
;
338 const char *section
= NULL
;
339 const char *option
= NULL
;
340 struct uci_package
*p
;
342 int err
= UCI_ERR_MEM
;
345 nargs
= lua_gettop(L
);
346 s
= luaL_checkstring(L
, 1);
349 /* Format: uci.delete("p.s[.o]") */
354 if ((err
= uci_parse_tuple(ctx
, (char *) s
, (char **) &package
, (char **) §ion
, (char **) &option
, NULL
)))
358 /* Format: uci.delete("p", "s", "o") */
359 option
= luaL_checkstring(L
, 3);
362 /* Format: uci.delete("p", "s") */
363 section
= luaL_checkstring(L
, 2);
371 p
= find_package(L
, package
, AUTOLOAD_ON
);
373 err
= UCI_ERR_NOTFOUND
;
376 err
= uci_delete(ctx
, p
, section
, option
);
380 uci_lua_perror(L
, "uci.set");
381 lua_pushboolean(L
, (err
== 0));
386 uci_lua_set(lua_State
*L
)
388 struct uci_package
*p
;
389 const char *package
= NULL
;
390 const char *section
= NULL
;
391 const char *option
= NULL
;
392 const char *value
= NULL
;
394 int err
= UCI_ERR_MEM
;
397 nargs
= lua_gettop(L
);
399 s
= luaL_checkstring(L
, 1);
402 /* Format: uci.set("p.s.o=v") or uci.set("p.s=v") */
407 if ((err
= uci_parse_tuple(ctx
, (char *) s
, (char **) &package
, (char **) §ion
, (char **) &option
, (char **) &value
)))
411 /* Format: uci.set("p", "s", "o", "v") */
412 option
= luaL_checkstring(L
, 3);
415 /* Format: uci.set("p", "s", "v") */
417 section
= luaL_checkstring(L
, 2);
418 value
= luaL_checkstring(L
, nargs
);
425 if ((section
== NULL
) || (value
== NULL
)) {
430 p
= find_package(L
, package
, AUTOLOAD_ON
);
432 err
= UCI_ERR_NOTFOUND
;
435 err
= uci_set(ctx
, p
, section
, option
, value
, NULL
);
439 uci_lua_perror(L
, "uci.set");
440 lua_pushboolean(L
, (err
== 0));
451 uci_lua_package_cmd(lua_State
*L
, enum pkg_cmd cmd
)
453 struct uci_element
*e
, *tmp
;
454 const char *s
= NULL
;
455 const char *section
= NULL
;
456 const char *option
= NULL
;
460 nargs
= lua_gettop(L
);
463 if (cmd
!= CMD_REVERT
)
465 luaL_checkstring(L
, 1);
466 option
= lua_tostring(L
, -1);
470 if (cmd
!= CMD_REVERT
)
472 luaL_checkstring(L
, 1);
473 section
= lua_tostring(L
, -1);
477 luaL_checkstring(L
, 1);
478 s
= lua_tostring(L
, -1);
485 luaL_error(L
, "Invalid argument count");
489 uci_foreach_element_safe(&ctx
->root
, tmp
, e
) {
490 struct uci_package
*p
= uci_to_package(e
);
491 int ret
= UCI_ERR_INVAL
;
493 if (s
&& (strcmp(s
, e
->name
) != 0))
498 ret
= uci_commit(ctx
, &p
, false);
501 ret
= uci_save(ctx
, p
);
504 ret
= uci_revert(ctx
, &p
, section
, option
);
512 lua_pushboolean(L
, !failed
);
517 uci_lua_save(lua_State
*L
)
519 return uci_lua_package_cmd(L
, CMD_SAVE
);
523 uci_lua_commit(lua_State
*L
)
525 return uci_lua_package_cmd(L
, CMD_COMMIT
);
529 uci_lua_revert(lua_State
*L
)
531 return uci_lua_package_cmd(L
, CMD_REVERT
);
535 uci_lua_add_change(lua_State
*L
, struct uci_element
*e
)
537 struct uci_history
*h
;
540 h
= uci_to_history(e
);
544 lua_getfield(L
, -1, h
->section
);
545 if (lua_isnil(L
, -1)) {
548 lua_pushvalue(L
, -1); /* copy for setfield */
549 lua_setfield(L
, -3, h
->section
);
552 name
= (h
->e
.name
? h
->e
.name
: ".type");
554 lua_pushstring(L
, h
->value
);
556 lua_pushstring(L
, "");
557 lua_setfield(L
, -2, name
);
562 uci_lua_changes_pkg(lua_State
*L
, const char *package
)
564 struct uci_package
*p
= NULL
;
565 struct uci_element
*e
;
566 bool autoload
= false;
568 p
= find_package(L
, package
, AUTOLOAD_OFF
);
571 p
= find_package(L
, package
, AUTOLOAD_FORCE
);
576 if (uci_list_empty(&p
->history
) && uci_list_empty(&p
->saved_history
))
580 uci_foreach_element(&p
->saved_history
, e
) {
581 uci_lua_add_change(L
, e
);
583 uci_foreach_element(&p
->history
, e
) {
584 uci_lua_add_change(L
, e
);
586 lua_setfield(L
, -2, p
->e
.name
);
594 uci_lua_changes(lua_State
*L
)
596 const char *package
= NULL
;
597 char **config
= NULL
;
601 nargs
= lua_gettop(L
);
604 package
= luaL_checkstring(L
, 1);
608 luaL_error(L
, "invalid argument count");
613 uci_lua_changes_pkg(L
, package
);
615 if (uci_list_configs(ctx
, &config
) != 0)
618 for(i
= 0; config
[i
] != NULL
; i
++) {
619 uci_lua_changes_pkg(L
, config
[i
]);
628 uci_lua_set_confdir(lua_State
*L
)
632 luaL_checkstring(L
, 1);
633 ret
= uci_set_confdir(ctx
, lua_tostring(L
, -1));
634 lua_pushboolean(L
, (ret
== 0));
639 uci_lua_set_savedir(lua_State
*L
)
643 luaL_checkstring(L
, 1);
644 ret
= uci_set_savedir(ctx
, lua_tostring(L
, -1));
645 lua_pushboolean(L
, (ret
== 0));
650 static const luaL_Reg uci
[] = {
651 { "load", uci_lua_load
},
652 { "unload", uci_lua_unload
},
653 { "get", uci_lua_get
},
654 { "get_all", uci_lua_get_all
},
655 { "add", uci_lua_add
},
656 { "set", uci_lua_set
},
657 { "save", uci_lua_save
},
658 { "delete", uci_lua_delete
},
659 { "commit", uci_lua_commit
},
660 { "revert", uci_lua_revert
},
661 { "changes", uci_lua_changes
},
662 { "foreach", uci_lua_foreach
},
663 { "set_confdir", uci_lua_set_confdir
},
664 { "set_savedir", uci_lua_set_savedir
},
670 luaopen_uci(lua_State
*L
)
672 ctx
= uci_alloc_context();
674 luaL_error(L
, "Cannot allocate UCI context\n");
675 luaL_register(L
, MODNAME
, uci
);
677 /* enable autoload by default */
678 lua_getfield(L
, LUA_GLOBALSINDEX
, "uci");
679 lua_pushboolean(L
, 1);
680 lua_setfield(L
, -2, "autoload");