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
;
46 static void ul_timer_cb(struct uloop_timeout
*t
)
48 struct lua_uloop_timeout
*tout
= container_of(t
, struct lua_uloop_timeout
, t
);
50 lua_getglobal(state
, "__uloop_cb");
51 lua_rawgeti(state
, -1, tout
->r
);
52 lua_remove(state
, -2);
54 lua_call(state
, 0, 0);
58 static int ul_timer_set(lua_State
*L
)
60 struct lua_uloop_timeout
*tout
;
63 if (!lua_isnumber(L
, -1)) {
64 lua_pushstring(L
, "invalid arg list");
70 set
= lua_tointeger(L
, -1);
71 tout
= lua_touserdata(L
, 1);
72 uloop_timeout_set(&tout
->t
, set
);
77 static int ul_timer_free(lua_State
*L
)
79 struct lua_uloop_timeout
*tout
= lua_touserdata(L
, 1);
81 uloop_timeout_cancel(&tout
->t
);
83 /* obj.__index.__gc = nil , make sure executing only once*/
84 lua_getfield(L
, -1, "__index");
85 lua_pushstring(L
, "__gc");
89 lua_getglobal(state
, "__uloop_cb");
90 luaL_unref(state
, -1, tout
->r
);
95 static const luaL_Reg timer_m
[] = {
96 { "set", ul_timer_set
},
97 { "cancel", ul_timer_free
},
101 static int ul_timer(lua_State
*L
)
103 struct lua_uloop_timeout
*tout
;
107 if (lua_isnumber(L
, -1)) {
108 set
= lua_tointeger(L
, -1);
112 if (!lua_isfunction(L
, -1)) {
113 lua_pushstring(L
, "invalid arg list");
119 lua_getglobal(L
, "__uloop_cb");
120 lua_pushvalue(L
, -2);
121 ref
= luaL_ref(L
, -2);
123 tout
= lua_newuserdata(L
, sizeof(*tout
));
124 lua_createtable(L
, 0, 2);
125 lua_pushvalue(L
, -1);
126 lua_setfield(L
, -2, "__index");
127 lua_pushcfunction(L
, ul_timer_free
);
128 lua_setfield(L
, -2, "__gc");
129 lua_pushvalue(L
, -1);
130 lua_setmetatable(L
, -3);
131 lua_pushvalue(L
, -2);
132 luaI_openlib(L
, NULL
, timer_m
, 1);
133 lua_pushvalue(L
, -2);
135 memset(tout
, 0, sizeof(*tout
));
138 tout
->t
.cb
= ul_timer_cb
;
140 uloop_timeout_set(&tout
->t
, set
);
145 static void ul_ufd_cb(struct uloop_fd
*fd
, unsigned int events
)
147 struct lua_uloop_fd
*ufd
= container_of(fd
, struct lua_uloop_fd
, fd
);
149 lua_getglobal(state
, "__uloop_cb");
150 lua_rawgeti(state
, -1, ufd
->r
);
151 lua_remove(state
, -2);
154 lua_getglobal(state
, "__uloop_fds");
155 lua_rawgeti(state
, -1, ufd
->fd_r
);
156 lua_remove(state
, -2);
159 lua_pushinteger(state
, events
);
160 lua_call(state
, 2, 0);
164 static int get_sock_fd(lua_State
* L
, int idx
) {
166 if(lua_isnumber(L
, idx
)) {
167 fd
= lua_tonumber(L
, idx
);
169 luaL_checktype(L
, idx
, LUA_TUSERDATA
);
170 lua_getfield(L
, idx
, "getfd");
172 return luaL_error(L
, "socket type missing 'getfd' method");
173 lua_pushvalue(L
, idx
- 1);
175 fd
= lua_tointeger(L
, -1);
181 static int ul_ufd_delete(lua_State
*L
)
183 struct lua_uloop_fd
*ufd
= lua_touserdata(L
, 1);
185 uloop_fd_delete(&ufd
->fd
);
187 /* obj.__index.__gc = nil , make sure executing only once*/
188 lua_getfield(L
, -1, "__index");
189 lua_pushstring(L
, "__gc");
193 lua_getglobal(state
, "__uloop_cb");
194 luaL_unref(state
, -1, ufd
->r
);
195 lua_remove(state
, -1);
197 lua_getglobal(state
, "__uloop_fds");
198 luaL_unref(state
, -1, ufd
->fd_r
);
199 lua_remove(state
, -1);
204 static const luaL_Reg ufd_m
[] = {
205 { "delete", ul_ufd_delete
},
209 static int ul_ufd_add(lua_State
*L
)
211 struct lua_uloop_fd
*ufd
;
213 unsigned int flags
= 0;
217 if (lua_isnumber(L
, -1)) {
218 flags
= lua_tointeger(L
, -1);
222 if (!lua_isfunction(L
, -1)) {
223 lua_pushstring(L
, "invalid arg list");
229 fd
= get_sock_fd(L
, -2);
231 lua_getglobal(L
, "__uloop_cb");
232 lua_pushvalue(L
, -2);
233 ref
= luaL_ref(L
, -2);
236 lua_getglobal(L
, "__uloop_fds");
237 lua_pushvalue(L
, -3);
238 fd_ref
= luaL_ref(L
, -2);
241 ufd
= lua_newuserdata(L
, sizeof(*ufd
));
243 lua_createtable(L
, 0, 2);
244 lua_pushvalue(L
, -1);
245 lua_setfield(L
, -2, "__index");
246 lua_pushcfunction(L
, ul_ufd_delete
);
247 lua_setfield(L
, -2, "__gc");
248 lua_pushvalue(L
, -1);
249 lua_setmetatable(L
, -3);
250 lua_pushvalue(L
, -2);
251 luaI_openlib(L
, NULL
, ufd_m
, 1);
252 lua_pushvalue(L
, -2);
254 memset(ufd
, 0, sizeof(*ufd
));
259 ufd
->fd
.cb
= ul_ufd_cb
;
261 uloop_fd_add(&ufd
->fd
, flags
);
266 static void ul_process_cb(struct uloop_process
*p
, int ret
)
268 struct lua_uloop_process
*proc
= container_of(p
, struct lua_uloop_process
, p
);
270 lua_getglobal(state
, "__uloop_cb");
271 lua_rawgeti(state
, -1, proc
->r
);
273 luaL_unref(state
, -2, proc
->r
);
274 lua_remove(state
, -2);
275 lua_pushinteger(state
, ret
>> 8);
276 lua_call(state
, 1, 0);
279 static int ul_process(lua_State
*L
)
281 struct lua_uloop_process
*proc
;
285 if (!lua_isfunction(L
, -1) || !lua_istable(L
, -2) ||
286 !lua_istable(L
, -3) || !lua_isstring(L
, -4)) {
287 lua_pushstring(L
, "invalid arg list");
296 lua_pushstring(L
, "failed to fork");
304 int argn
= lua_objlen(L
, -3);
305 int envn
= lua_objlen(L
, -2);
306 char** argp
= malloc(sizeof(char*) * (argn
+ 2));
307 char** envp
= malloc(sizeof(char*) * envn
+ 1);
310 argp
[0] = (char*) lua_tostring(L
, -4);
311 for (i
= 1; i
<= argn
; i
++) {
312 lua_rawgeti(L
, -3, i
);
313 argp
[i
] = (char*) lua_tostring(L
, -1);
318 for (i
= 1; i
<= envn
; i
++) {
319 lua_rawgeti(L
, -2, i
);
320 envp
[i
- 1] = (char*) lua_tostring(L
, -1);
325 execve(*argp
, argp
, envp
);
329 lua_getglobal(L
, "__uloop_cb");
330 lua_pushvalue(L
, -2);
331 ref
= luaL_ref(L
, -2);
333 proc
= lua_newuserdata(L
, sizeof(*proc
));
334 memset(proc
, 0, sizeof(*proc
));
338 proc
->p
.cb
= ul_process_cb
;
339 uloop_process_add(&proc
->p
);
344 static int ul_init(lua_State
*L
)
347 lua_pushboolean(L
, 1);
352 static int ul_run(lua_State
*L
)
355 lua_pushboolean(L
, 1);
360 static int ul_end(lua_State
*L
)
366 static luaL_reg uloop_func
[] = {
370 {"process", ul_process
},
371 {"fd_add", ul_ufd_add
},
376 /* avoid warnings about missing declarations */
377 int luaopen_uloop(lua_State
*L
);
378 int luaclose_uloop(lua_State
*L
);
380 int luaopen_uloop(lua_State
*L
)
384 lua_createtable(L
, 1, 0);
385 lua_setglobal(L
, "__uloop_cb");
387 lua_createtable(L
, 1, 0);
388 lua_setglobal(L
, "__uloop_fds");
390 luaL_openlib(L
, "uloop", uloop_func
, 0);
391 lua_pushstring(L
, "_VERSION");
392 lua_pushstring(L
, "1.0");
395 lua_pushstring(L
, "ULOOP_READ");
396 lua_pushinteger(L
, ULOOP_READ
);
399 lua_pushstring(L
, "ULOOP_WRITE");
400 lua_pushinteger(L
, ULOOP_WRITE
);
403 lua_pushstring(L
, "ULOOP_EDGE_TRIGGER");
404 lua_pushinteger(L
, ULOOP_EDGE_TRIGGER
);
407 lua_pushstring(L
, "ULOOP_BLOCKING");
408 lua_pushinteger(L
, ULOOP_BLOCKING
);
414 int luaclose_uloop(lua_State
*L
)
416 lua_pushstring(L
, "Called");