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(L, -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_add(lua_State *L)
177 struct lua_uloop_fd *ufd;
179 unsigned int flags = 0;
183 if (lua_isnumber(L, -1)) {
184 flags = lua_tointeger(L, -1);
188 if (!lua_isfunction(L, -1)) {
189 lua_pushstring(L, "invalid arg list");
195 fd = get_sock_fd(L, -2);
197 lua_getglobal(L, "__uloop_cb");
198 lua_pushvalue(L, -2);
199 ref = luaL_ref(L, -2);
202 lua_getglobal(L, "__uloop_fds");
203 lua_pushvalue(L, -3);
204 fd_ref = luaL_ref(L, -2);
207 ufd = lua_newuserdata(L, sizeof(*ufd));
208 memset(ufd, 0, sizeof(*ufd));
213 ufd->fd.cb = ul_ufd_cb;
215 uloop_fd_add(&ufd->fd, flags);
220 static void ul_process_cb(struct uloop_process *p, int ret)
222 struct lua_uloop_process *proc = container_of(p, struct lua_uloop_process, p);
224 lua_getglobal(state, "__uloop_cb");
225 lua_rawgeti(state, -1, proc->r);
227 luaL_unref(state, -2, proc->r);
228 lua_remove(state, -2);
229 lua_pushinteger(state, ret >> 8);
230 lua_call(state, 1, 0);
233 static int ul_process(lua_State *L)
235 struct lua_uloop_process *proc;
239 if (!lua_isfunction(L, -1) || !lua_istable(L, -2) ||
240 !lua_istable(L, -3) || !lua_isstring(L, -4)) {
241 lua_pushstring(L, "invalid arg list");
250 lua_pushstring(L, "failed to fork");
258 int argn = lua_objlen(L, -3);
259 int envn = lua_objlen(L, -2);
260 char** argp = malloc(sizeof(char*) * (argn + 2));
261 char** envp = malloc(sizeof(char*) * envn + 1);
264 argp[0] = (char*) lua_tostring(L, -4);
265 for (i = 1; i <= argn; i++) {
266 lua_rawgeti(L, -3, i);
267 argp[i] = (char*) lua_tostring(L, -1);
272 for (i = 1; i <= envn; i++) {
273 lua_rawgeti(L, -2, i);
274 envp[i - 1] = (char*) lua_tostring(L, -1);
279 execve(*argp, argp, envp);
283 lua_getglobal(L, "__uloop_cb");
284 lua_pushvalue(L, -2);
285 ref = luaL_ref(L, -2);
287 proc = lua_newuserdata(L, sizeof(*proc));
288 memset(proc, 0, sizeof(*proc));
292 proc->p.cb = ul_process_cb;
293 uloop_process_add(&proc->p);
298 static int ul_init(lua_State *L)
301 lua_pushboolean(L, 1);
306 static int ul_run(lua_State *L)
309 lua_pushboolean(L, 1);
314 static luaL_reg uloop_func[] = {
318 {"process", ul_process},
319 {"fd_add", ul_ufd_add},
323 /* avoid warnings about missing declarations */
324 int luaopen_uloop(lua_State *L);
325 int luaclose_uloop(lua_State *L);
327 int luaopen_uloop(lua_State *L)
331 lua_createtable(L, 1, 0);
332 lua_setglobal(L, "__uloop_cb");
334 lua_createtable(L, 1, 0);
335 lua_setglobal(L, "__uloop_fds");
337 luaL_openlib(L, "uloop", uloop_func, 0);
338 lua_pushstring(L, "_VERSION");
339 lua_pushstring(L, "1.0");
342 lua_pushstring(L, "ULOOP_READ");
343 lua_pushinteger(L, ULOOP_READ);
346 lua_pushstring(L, "ULOOP_WRITE");
347 lua_pushinteger(L, ULOOP_WRITE);
350 lua_pushstring(L, "ULOOP_EDGE_TRIGGER");
351 lua_pushinteger(L, ULOOP_EDGE_TRIGGER);
354 lua_pushstring(L, "ULOOP_BLOCKING");
355 lua_pushinteger(L, ULOOP_BLOCKING);
361 int luaclose_uloop(lua_State *L)
363 lua_pushstring(L, "Called");