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_free(lua_State *L)
99 struct lua_uloop_timeout *tout = lua_touserdata(L, 1);
101 uloop_timeout_cancel(&tout->t);
103 /* obj.__index.__gc = nil , make sure executing only once*/
104 lua_getfield(L, -1, "__index");
105 lua_pushstring(L, "__gc");
109 lua_getglobal(state, "__uloop_cb");
110 luaL_unref(state, -1, tout->r);
115 static const luaL_Reg timer_m[] = {
116 { "set", ul_timer_set },
117 { "cancel", ul_timer_free },
121 static int ul_timer(lua_State *L)
123 struct lua_uloop_timeout *tout;
127 if (lua_isnumber(L, -1)) {
128 set = lua_tointeger(L, -1);
132 if (!lua_isfunction(L, -1)) {
133 lua_pushstring(L, "invalid arg list");
139 lua_getglobal(L, "__uloop_cb");
140 lua_pushvalue(L, -2);
141 ref = luaL_ref(L, -2);
143 tout = ul_create_userdata(L, sizeof(*tout), timer_m, ul_timer_free);
145 tout->t.cb = ul_timer_cb;
148 uloop_timeout_set(&tout->t, set);
153 static void ul_ufd_cb(struct uloop_fd *fd, unsigned int events)
155 struct lua_uloop_fd *ufd = container_of(fd, struct lua_uloop_fd, fd);
157 lua_getglobal(state, "__uloop_cb");
158 lua_rawgeti(state, -1, ufd->r);
159 lua_remove(state, -2);
162 lua_getglobal(state, "__uloop_fds");
163 lua_rawgeti(state, -1, ufd->fd_r);
164 lua_remove(state, -2);
167 lua_pushinteger(state, events);
168 lua_call(state, 2, 0);
172 static int get_sock_fd(lua_State* L, int idx) {
174 if(lua_isnumber(L, idx)) {
175 fd = lua_tonumber(L, idx);
177 luaL_checktype(L, idx, LUA_TUSERDATA);
178 lua_getfield(L, idx, "getfd");
180 return luaL_error(L, "socket type missing 'getfd' method");
181 lua_pushvalue(L, idx - 1);
183 fd = lua_tointeger(L, -1);
189 static int ul_ufd_delete(lua_State *L)
191 struct lua_uloop_fd *ufd = lua_touserdata(L, 1);
193 uloop_fd_delete(&ufd->fd);
195 /* obj.__index.__gc = nil , make sure executing only once*/
196 lua_getfield(L, -1, "__index");
197 lua_pushstring(L, "__gc");
201 lua_getglobal(state, "__uloop_cb");
202 luaL_unref(state, -1, ufd->r);
203 lua_remove(state, -1);
205 lua_getglobal(state, "__uloop_fds");
206 luaL_unref(state, -1, ufd->fd_r);
207 lua_remove(state, -1);
212 static const luaL_Reg ufd_m[] = {
213 { "delete", ul_ufd_delete },
217 static int ul_ufd_add(lua_State *L)
219 struct lua_uloop_fd *ufd;
221 unsigned int flags = 0;
225 if (lua_isnumber(L, -1)) {
226 flags = lua_tointeger(L, -1);
230 if (!lua_isfunction(L, -1)) {
231 lua_pushstring(L, "invalid arg list");
237 fd = get_sock_fd(L, -2);
239 lua_getglobal(L, "__uloop_cb");
240 lua_pushvalue(L, -2);
241 ref = luaL_ref(L, -2);
244 lua_getglobal(L, "__uloop_fds");
245 lua_pushvalue(L, -3);
246 fd_ref = luaL_ref(L, -2);
249 ufd = ul_create_userdata(L, sizeof(*ufd), ufd_m, ul_ufd_delete);
253 ufd->fd.cb = ul_ufd_cb;
255 uloop_fd_add(&ufd->fd, flags);
260 static void ul_process_cb(struct uloop_process *p, int ret)
262 struct lua_uloop_process *proc = container_of(p, struct lua_uloop_process, p);
264 lua_getglobal(state, "__uloop_cb");
265 lua_rawgeti(state, -1, proc->r);
267 luaL_unref(state, -2, proc->r);
268 lua_remove(state, -2);
269 lua_pushinteger(state, ret >> 8);
270 lua_call(state, 1, 0);
273 static int ul_process(lua_State *L)
275 struct lua_uloop_process *proc;
279 if (!lua_isfunction(L, -1) || !lua_istable(L, -2) ||
280 !lua_istable(L, -3) || !lua_isstring(L, -4)) {
281 lua_pushstring(L, "invalid arg list");
290 lua_pushstring(L, "failed to fork");
298 int argn = lua_objlen(L, -3);
299 int envn = lua_objlen(L, -2);
300 char** argp = malloc(sizeof(char*) * (argn + 2));
301 char** envp = malloc(sizeof(char*) * envn + 1);
304 argp[0] = (char*) lua_tostring(L, -4);
305 for (i = 1; i <= argn; i++) {
306 lua_rawgeti(L, -3, i);
307 argp[i] = (char*) lua_tostring(L, -1);
312 for (i = 1; i <= envn; i++) {
313 lua_rawgeti(L, -2, i);
314 envp[i - 1] = (char*) lua_tostring(L, -1);
319 execve(*argp, argp, envp);
323 lua_getglobal(L, "__uloop_cb");
324 lua_pushvalue(L, -2);
325 ref = luaL_ref(L, -2);
327 proc = lua_newuserdata(L, sizeof(*proc));
328 memset(proc, 0, sizeof(*proc));
332 proc->p.cb = ul_process_cb;
333 uloop_process_add(&proc->p);
338 static int ul_init(lua_State *L)
341 lua_pushboolean(L, 1);
346 static int ul_run(lua_State *L)
349 lua_pushboolean(L, 1);
354 static int ul_end(lua_State *L)
360 static luaL_reg uloop_func[] = {
364 {"process", ul_process},
365 {"fd_add", ul_ufd_add},
370 /* avoid warnings about missing declarations */
371 int luaopen_uloop(lua_State *L);
372 int luaclose_uloop(lua_State *L);
374 int luaopen_uloop(lua_State *L)
378 lua_createtable(L, 1, 0);
379 lua_setglobal(L, "__uloop_cb");
381 lua_createtable(L, 1, 0);
382 lua_setglobal(L, "__uloop_fds");
384 luaL_openlib(L, "uloop", uloop_func, 0);
385 lua_pushstring(L, "_VERSION");
386 lua_pushstring(L, "1.0");
389 lua_pushstring(L, "ULOOP_READ");
390 lua_pushinteger(L, ULOOP_READ);
393 lua_pushstring(L, "ULOOP_WRITE");
394 lua_pushinteger(L, ULOOP_WRITE);
397 lua_pushstring(L, "ULOOP_EDGE_TRIGGER");
398 lua_pushinteger(L, ULOOP_EDGE_TRIGGER);
401 lua_pushstring(L, "ULOOP_BLOCKING");
402 lua_pushinteger(L, ULOOP_BLOCKING);
408 int luaclose_uloop(lua_State *L)
410 lua_pushstring(L, "Called");