2 * Copyright (C) 2012 John Crispin <blogic@openwrt.org>
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
34 struct lua_uloop_timeout
{
35 struct uloop_timeout t
;
39 struct lua_uloop_process
{
40 struct uloop_process p
;
44 static lua_State
*state
;
47 ul_create_userdata(lua_State
*L
, size_t size
, const luaL_Reg
*reg
, lua_CFunction gc
)
49 void *ret
= lua_newuserdata(L
, size
);
52 lua_createtable(L
, 0, 2);
54 lua_setfield(L
, -2, "__index");
55 lua_pushcfunction(L
, gc
);
56 lua_setfield(L
, -2, "__gc");
58 lua_setmetatable(L
, -3);
60 luaI_openlib(L
, NULL
, reg
, 1);
66 static void ul_timer_cb(struct uloop_timeout
*t
)
68 struct lua_uloop_timeout
*tout
= container_of(t
, struct lua_uloop_timeout
, t
);
70 lua_getglobal(state
, "__uloop_cb");
71 lua_rawgeti(state
, -1, tout
->r
);
72 lua_remove(state
, -2);
74 lua_call(state
, 0, 0);
78 static int ul_timer_set(lua_State
*L
)
80 struct lua_uloop_timeout
*tout
;
83 if (!lua_isnumber(L
, -1)) {
84 lua_pushstring(L
, "invalid arg list");
90 set
= lua_tointeger(L
, -1);
91 tout
= lua_touserdata(L
, 1);
92 uloop_timeout_set(&tout
->t
, set
);
97 static int ul_timer_remaining(lua_State
*L
)
99 struct lua_uloop_timeout
*tout
;
101 tout
= lua_touserdata(L
, 1);
102 lua_pushnumber(L
, uloop_timeout_remaining(&tout
->t
));
106 static int ul_timer_free(lua_State
*L
)
108 struct lua_uloop_timeout
*tout
= lua_touserdata(L
, 1);
110 uloop_timeout_cancel(&tout
->t
);
112 /* obj.__index.__gc = nil , make sure executing only once*/
113 lua_getfield(L
, -1, "__index");
114 lua_pushstring(L
, "__gc");
118 lua_getglobal(state
, "__uloop_cb");
119 luaL_unref(state
, -1, tout
->r
);
124 static const luaL_Reg timer_m
[] = {
125 { "set", ul_timer_set
},
126 { "remaining", ul_timer_remaining
},
127 { "cancel", ul_timer_free
},
131 static int ul_timer(lua_State
*L
)
133 struct lua_uloop_timeout
*tout
;
137 if (lua_isnumber(L
, -1)) {
138 set
= lua_tointeger(L
, -1);
142 if (!lua_isfunction(L
, -1)) {
143 lua_pushstring(L
, "invalid arg list");
149 lua_getglobal(L
, "__uloop_cb");
150 lua_pushvalue(L
, -2);
151 ref
= luaL_ref(L
, -2);
153 tout
= ul_create_userdata(L
, sizeof(*tout
), timer_m
, ul_timer_free
);
155 tout
->t
.cb
= ul_timer_cb
;
158 uloop_timeout_set(&tout
->t
, set
);
163 static void ul_ufd_cb(struct uloop_fd
*fd
, unsigned int events
)
165 struct lua_uloop_fd
*ufd
= container_of(fd
, struct lua_uloop_fd
, fd
);
167 lua_getglobal(state
, "__uloop_cb");
168 lua_rawgeti(state
, -1, ufd
->r
);
169 lua_remove(state
, -2);
172 lua_getglobal(state
, "__uloop_fds");
173 lua_rawgeti(state
, -1, ufd
->fd_r
);
174 lua_remove(state
, -2);
177 lua_pushinteger(state
, events
);
178 lua_call(state
, 2, 0);
182 static int get_sock_fd(lua_State
* L
, int idx
) {
184 if(lua_isnumber(L
, idx
)) {
185 fd
= lua_tonumber(L
, idx
);
187 luaL_checktype(L
, idx
, LUA_TUSERDATA
);
188 lua_getfield(L
, idx
, "getfd");
190 return luaL_error(L
, "socket type missing 'getfd' method");
191 lua_pushvalue(L
, idx
- 1);
193 fd
= lua_tointeger(L
, -1);
199 static int ul_ufd_delete(lua_State
*L
)
201 struct lua_uloop_fd
*ufd
= lua_touserdata(L
, 1);
203 uloop_fd_delete(&ufd
->fd
);
205 /* obj.__index.__gc = nil , make sure executing only once*/
206 lua_getfield(L
, -1, "__index");
207 lua_pushstring(L
, "__gc");
211 lua_getglobal(state
, "__uloop_cb");
212 luaL_unref(state
, -1, ufd
->r
);
213 lua_remove(state
, -1);
215 lua_getglobal(state
, "__uloop_fds");
216 luaL_unref(state
, -1, ufd
->fd_r
);
217 lua_remove(state
, -1);
222 static const luaL_Reg ufd_m
[] = {
223 { "delete", ul_ufd_delete
},
227 static int ul_ufd_add(lua_State
*L
)
229 struct lua_uloop_fd
*ufd
;
231 unsigned int flags
= 0;
235 if (lua_isnumber(L
, -1)) {
236 flags
= lua_tointeger(L
, -1);
240 if (!lua_isfunction(L
, -1)) {
241 lua_pushstring(L
, "invalid arg list");
247 fd
= get_sock_fd(L
, -2);
249 lua_getglobal(L
, "__uloop_cb");
250 lua_pushvalue(L
, -2);
251 ref
= luaL_ref(L
, -2);
254 lua_getglobal(L
, "__uloop_fds");
255 lua_pushvalue(L
, -3);
256 fd_ref
= luaL_ref(L
, -2);
259 ufd
= ul_create_userdata(L
, sizeof(*ufd
), ufd_m
, ul_ufd_delete
);
263 ufd
->fd
.cb
= ul_ufd_cb
;
265 uloop_fd_add(&ufd
->fd
, flags
);
270 static int ul_process_free(lua_State
*L
)
272 struct lua_uloop_process
*proc
= lua_touserdata(L
, 1);
274 /* obj.__index.__gc = nil , make sure executing only once*/
275 lua_getfield(L
, -1, "__index");
276 lua_pushstring(L
, "__gc");
280 if (proc
->r
!= LUA_NOREF
) {
281 uloop_process_delete(&proc
->p
);
283 lua_getglobal(state
, "__uloop_cb");
284 luaL_unref(state
, -1, proc
->r
);
285 lua_remove(state
, -1);
291 static int ul_process_pid(lua_State
*L
)
293 struct lua_uloop_process
*proc
= lua_touserdata(L
, 1);
296 lua_pushnumber(L
, proc
->p
.pid
);
303 static const luaL_Reg process_m
[] = {
304 { "delete", ul_process_free
},
305 { "pid", ul_process_pid
},
309 static void ul_process_cb(struct uloop_process
*p
, int ret
)
311 struct lua_uloop_process
*proc
= container_of(p
, struct lua_uloop_process
, p
);
313 lua_getglobal(state
, "__uloop_cb");
314 lua_rawgeti(state
, -1, proc
->r
);
316 luaL_unref(state
, -2, proc
->r
);
318 lua_remove(state
, -2);
319 lua_pushinteger(state
, ret
>> 8);
320 lua_call(state
, 1, 0);
323 static int ul_process(lua_State
*L
)
325 struct lua_uloop_process
*proc
;
329 if (!lua_isfunction(L
, -1) || !lua_istable(L
, -2) ||
330 !lua_istable(L
, -3) || !lua_isstring(L
, -4)) {
331 lua_pushstring(L
, "invalid arg list");
340 lua_pushstring(L
, "failed to fork");
348 int argn
= lua_objlen(L
, -3);
349 int envn
= lua_objlen(L
, -2);
350 char** argp
= malloc(sizeof(char*) * (argn
+ 2));
351 char** envp
= malloc(sizeof(char*) * (envn
+ 1));
357 argp
[0] = (char*) lua_tostring(L
, -4);
358 for (i
= 1; i
<= argn
; i
++) {
359 lua_rawgeti(L
, -3, i
);
360 argp
[i
] = (char*) lua_tostring(L
, -1);
365 for (i
= 1; i
<= envn
; i
++) {
366 lua_rawgeti(L
, -2, i
);
367 envp
[i
- 1] = (char*) lua_tostring(L
, -1);
372 execve(*argp
, argp
, envp
);
376 lua_getglobal(L
, "__uloop_cb");
377 lua_pushvalue(L
, -2);
378 ref
= luaL_ref(L
, -2);
380 proc
= ul_create_userdata(L
, sizeof(*proc
), process_m
, ul_process_free
);
383 proc
->p
.cb
= ul_process_cb
;
384 uloop_process_add(&proc
->p
);
389 static int ul_init(lua_State
*L
)
392 lua_pushboolean(L
, 1);
397 static int ul_run(lua_State
*L
)
400 lua_pushboolean(L
, 1);
405 static int ul_end(lua_State
*L
)
411 static luaL_reg uloop_func
[] = {
415 {"process", ul_process
},
416 {"fd_add", ul_ufd_add
},
421 /* avoid warnings about missing declarations */
422 int luaopen_uloop(lua_State
*L
);
423 int luaclose_uloop(lua_State
*L
);
425 int luaopen_uloop(lua_State
*L
)
429 lua_createtable(L
, 1, 0);
430 lua_setglobal(L
, "__uloop_cb");
432 lua_createtable(L
, 1, 0);
433 lua_setglobal(L
, "__uloop_fds");
435 luaL_openlib(L
, "uloop", uloop_func
, 0);
436 lua_pushstring(L
, "_VERSION");
437 lua_pushstring(L
, "1.0");
440 lua_pushstring(L
, "ULOOP_READ");
441 lua_pushinteger(L
, ULOOP_READ
);
444 lua_pushstring(L
, "ULOOP_WRITE");
445 lua_pushinteger(L
, ULOOP_WRITE
);
448 lua_pushstring(L
, "ULOOP_EDGE_TRIGGER");
449 lua_pushinteger(L
, ULOOP_EDGE_TRIGGER
);
452 lua_pushstring(L
, "ULOOP_BLOCKING");
453 lua_pushinteger(L
, ULOOP_BLOCKING
);
459 int luaclose_uloop(lua_State
*L
)
461 lua_pushstring(L
, "Called");