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);
82 lua_getglobal(state, "__uloop_cb");
83 luaL_unref(state, -1, tout->r);
88 static const luaL_Reg timer_m[] = {
89 { "set", ul_timer_set },
90 { "cancel", ul_timer_free },
94 static int ul_timer(lua_State *L)
96 struct lua_uloop_timeout *tout;
100 if (lua_isnumber(L, -1)) {
101 set = lua_tointeger(L, -1);
105 if (!lua_isfunction(L, -1)) {
106 lua_pushstring(L, "invalid arg list");
112 lua_getglobal(L, "__uloop_cb");
113 lua_pushvalue(L, -2);
114 ref = luaL_ref(L, -2);
116 tout = lua_newuserdata(L, sizeof(*tout));
117 lua_createtable(L, 0, 2);
118 lua_pushvalue(L, -1);
119 lua_setfield(L, -2, "__index");
120 lua_pushcfunction(L, ul_timer_free);
121 lua_setfield(L, -2, "__gc");
122 lua_pushvalue(L, -1);
123 lua_setmetatable(L, -3);
124 lua_pushvalue(L, -2);
125 luaI_openlib(L, NULL, timer_m, 1);
126 lua_pushvalue(L, -2);
128 memset(tout, 0, sizeof(*tout));
131 tout->t.cb = ul_timer_cb;
133 uloop_timeout_set(&tout->t, set);
138 static void ul_ufd_cb(struct uloop_fd *fd, unsigned int events)
140 struct lua_uloop_fd *ufd = container_of(fd, struct lua_uloop_fd, fd);
142 lua_getglobal(state, "__uloop_cb");
143 lua_rawgeti(state, -1, ufd->r);
144 lua_remove(state, -2);
147 lua_getglobal(state, "__uloop_fds");
148 lua_rawgeti(state, -1, ufd->fd_r);
149 lua_remove(state, -2);
152 lua_pushinteger(state, events);
154 lua_call(state, 2, 0);
158 static int get_sock_fd(lua_State* L, int idx) {
160 if(lua_isnumber(L, idx)) {
161 fd = lua_tonumber(L, idx);
163 luaL_checktype(L, idx, LUA_TUSERDATA);
164 lua_getfield(L, idx, "getfd");
166 return luaL_error(L, "socket type missing 'getfd' method");
167 lua_pushvalue(L, idx - 1);
169 fd = lua_tointeger(L, -1);
175 static int ul_ufd_delete(lua_State *L)
177 struct lua_uloop_fd *ufd = lua_touserdata(L, 1);
179 uloop_fd_delete(&ufd->fd);
181 lua_getglobal(state, "__uloop_cb");
182 luaL_unref(state, -1, ufd->r);
183 lua_remove(state, -1);
185 lua_getglobal(state, "__uloop_fds");
186 luaL_unref(state, -1, ufd->fd_r);
187 lua_remove(state, -1);
192 static const luaL_Reg ufd_m[] = {
193 { "delete", ul_ufd_delete },
197 static int ul_ufd_add(lua_State *L)
199 struct lua_uloop_fd *ufd;
201 unsigned int flags = 0;
205 if (lua_isnumber(L, -1)) {
206 flags = lua_tointeger(L, -1);
210 if (!lua_isfunction(L, -1)) {
211 lua_pushstring(L, "invalid arg list");
217 fd = get_sock_fd(L, -2);
219 lua_getglobal(L, "__uloop_cb");
220 lua_pushvalue(L, -2);
221 ref = luaL_ref(L, -2);
224 lua_getglobal(L, "__uloop_fds");
225 lua_pushvalue(L, -3);
226 fd_ref = luaL_ref(L, -2);
229 ufd = lua_newuserdata(L, sizeof(*ufd));
231 lua_createtable(L, 0, 2);
232 lua_pushvalue(L, -1);
233 lua_setfield(L, -2, "__index");
234 lua_pushcfunction(L, ul_ufd_delete);
235 lua_setfield(L, -2, "__gc");
236 lua_pushvalue(L, -1);
237 lua_setmetatable(L, -3);
238 lua_pushvalue(L, -2);
239 luaI_openlib(L, NULL, ufd_m, 1);
240 lua_pushvalue(L, -2);
242 memset(ufd, 0, sizeof(*ufd));
247 ufd->fd.cb = ul_ufd_cb;
249 uloop_fd_add(&ufd->fd, flags);
254 static void ul_process_cb(struct uloop_process *p, int ret)
256 struct lua_uloop_process *proc = container_of(p, struct lua_uloop_process, p);
258 lua_getglobal(state, "__uloop_cb");
259 lua_rawgeti(state, -1, proc->r);
261 luaL_unref(state, -2, proc->r);
262 lua_remove(state, -2);
263 lua_pushinteger(state, ret >> 8);
264 lua_call(state, 1, 0);
267 static int ul_process(lua_State *L)
269 struct lua_uloop_process *proc;
273 if (!lua_isfunction(L, -1) || !lua_istable(L, -2) ||
274 !lua_istable(L, -3) || !lua_isstring(L, -4)) {
275 lua_pushstring(L, "invalid arg list");
284 lua_pushstring(L, "failed to fork");
292 int argn = lua_objlen(L, -3);
293 int envn = lua_objlen(L, -2);
294 char** argp = malloc(sizeof(char*) * (argn + 2));
295 char** envp = malloc(sizeof(char*) * envn + 1);
298 argp[0] = (char*) lua_tostring(L, -4);
299 for (i = 1; i <= argn; i++) {
300 lua_rawgeti(L, -3, i);
301 argp[i] = (char*) lua_tostring(L, -1);
306 for (i = 1; i <= envn; i++) {
307 lua_rawgeti(L, -2, i);
308 envp[i - 1] = (char*) lua_tostring(L, -1);
313 execve(*argp, argp, envp);
317 lua_getglobal(L, "__uloop_cb");
318 lua_pushvalue(L, -2);
319 ref = luaL_ref(L, -2);
321 proc = lua_newuserdata(L, sizeof(*proc));
322 memset(proc, 0, sizeof(*proc));
326 proc->p.cb = ul_process_cb;
327 uloop_process_add(&proc->p);
332 static int ul_init(lua_State *L)
335 lua_pushboolean(L, 1);
340 static int ul_run(lua_State *L)
343 lua_pushboolean(L, 1);
348 static luaL_reg uloop_func[] = {
352 {"process", ul_process},
353 {"fd_add", ul_ufd_add},
357 /* avoid warnings about missing declarations */
358 int luaopen_uloop(lua_State *L);
359 int luaclose_uloop(lua_State *L);
361 int luaopen_uloop(lua_State *L)
365 lua_createtable(L, 1, 0);
366 lua_setglobal(L, "__uloop_cb");
368 lua_createtable(L, 1, 0);
369 lua_setglobal(L, "__uloop_fds");
371 luaL_openlib(L, "uloop", uloop_func, 0);
372 lua_pushstring(L, "_VERSION");
373 lua_pushstring(L, "1.0");
376 lua_pushstring(L, "ULOOP_READ");
377 lua_pushinteger(L, ULOOP_READ);
380 lua_pushstring(L, "ULOOP_WRITE");
381 lua_pushinteger(L, ULOOP_WRITE);
384 lua_pushstring(L, "ULOOP_EDGE_TRIGGER");
385 lua_pushinteger(L, ULOOP_EDGE_TRIGGER);
388 lua_pushstring(L, "ULOOP_BLOCKING");
389 lua_pushinteger(L, ULOOP_BLOCKING);
395 int luaclose_uloop(lua_State *L)
397 lua_pushstring(L, "Called");