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--- /dev/null
+++ b/trigger/uci_trigger.c
@@ -0,0 +1,132 @@
+#include <sys/types.h>
+#include <sys/time.h>
+#include <stdbool.h>
+#include <string.h>
+#include <stdio.h>
+#include <lualib.h>
+#include <lauxlib.h>
+#include "uci.h"
+
+// #define DEBUG
+
+static int refcount = 0;
+static lua_State *gL = NULL;
+static bool prepared = false;
+
+struct trigger_set_op {
+ struct uci_package *p;
+ struct uci_delta *h;
+};
+
+static int trigger_set(lua_State *L)
+{
+ struct trigger_set_op *so =
+ (struct trigger_set_op *)lua_touserdata(L, 1);
+ struct uci_package *p = so->p;
+ struct uci_delta *h = so->h;
+ struct uci_context *ctx = p->ctx;
+
+ /* ignore non-standard savedirs/configdirs
+ * in order to not trigger events on uci state changes */
+ if (strcmp(ctx->savedir, UCI_SAVEDIR) ||
+ strcmp(ctx->confdir, UCI_CONFDIR))
+ return 0;
+
+ if (!prepared) {
+ lua_getglobal(L, "require");
+ lua_pushstring(L, "uci.trigger");
+ lua_call(L, 1, 0);
+
+ lua_getglobal(L, "uci");
+ lua_getfield(L, -1, "trigger");
+ lua_getfield(L, -1, "load_modules");
+ lua_call(L, 0, 0);
+ prepared = true;
+ } else {
+ lua_getglobal(L, "uci");
+ lua_getfield(L, -1, "trigger");
+ }
+
+ lua_getfield(L, -1, "set");
+ lua_createtable(L, 4, 0);
+
+ lua_pushstring(L, p->e.name);
+ lua_rawseti(L, -2, 1);
+ if (h->section) {
+ lua_pushstring(L, h->section);
+ lua_rawseti(L, -2, 2);
+ }
+ if (h->e.name) {
+ lua_pushstring(L, h->e.name);
+ lua_rawseti(L, -2, 3);
+ }
+ if (h->value) {
+ lua_pushstring(L, h->value);
+ lua_rawseti(L, -2, 4);
+ }
+ lua_call(L, 1, 0);
+ lua_pop(L, 2);
+ return 0;
+}
+
+#ifdef DEBUG
+
+static int report (lua_State *L, int status) {
+ if (status && !lua_isnil(L, -1)) {
+ const char *msg = lua_tostring(L, -1);
+ if (msg == NULL) msg = "(error object is not a string)";
+ fprintf(stderr, "ERROR: %s\n", msg);
+ lua_pop(L, 1);
+ }
+ return status;
+}
+
+#else
+
+static inline int report(lua_State *L, int status) {
+ return status;
+}
+
+#endif
+
+static void trigger_set_hook(const struct uci_hook_ops *ops, struct uci_package *p, struct uci_delta *h)
+{
+ struct trigger_set_op so;
+
+ so.p = p;
+ so.h = h;
+ report(gL, lua_cpcall(gL, &trigger_set, &so));
+}
+
+static struct uci_hook_ops hook = {
+ .set = trigger_set_hook,
+};
+
+static int trigger_attach(struct uci_context *ctx)
+{
+ if (!gL) {
+ gL = luaL_newstate();
+ if (!gL)
+ return -1;
+ luaL_openlibs(gL);
+
+ refcount++;
+ }
+ uci_add_hook(ctx, &hook);
+ return 0;
+}
+
+static void trigger_detach(struct uci_context *ctx)
+{
+ if (gL && (--refcount <= 0)) {
+ lua_close(gL);
+ gL = NULL;
+ refcount = 0;
+ prepared = false;
+ }
+}
+
+struct uci_plugin_ops uci_plugin = {
+ .attach = trigger_attach,
+ .detach = trigger_detach,
+};
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -35,6 +35,7 @@ ADD_EXECUTABLE(ucimap-example ucimap-exa
TARGET_LINK_LIBRARIES(ucimap-example uci-static ucimap dl)
ADD_SUBDIRECTORY(lua)
+ADD_SUBDIRECTORY(trigger)
INSTALL(FILES uci.h uci_config.h ucimap.h
DESTINATION include/libubox
--- /dev/null
+++ b/trigger/CMakeLists.txt
@@ -0,0 +1,19 @@
+cmake_minimum_required(VERSION 2.6)
+
+PROJECT(uci C)
+
+SET(CMAKE_INSTALL_PREFIX /)
+
+ADD_DEFINITIONS(-Os -Wall -Werror --std=gnu99 -g3 -I..)
+
+IF(APPLE)
+ SET(CMAKE_SHARED_MODULE_CREATE_C_FLAGS "${CMAKE_SHARED_MODULE_CREATE_C_FLAGS} -undefined dynamic_lookup")
+ENDIF(APPLE)
+
+ADD_LIBRARY(uci_trigger MODULE uci_trigger.c)
+SET_TARGET_PROPERTIES(uci_trigger PROPERTIES
+ OUTPUT_NAME uci_trigger
+ PREFIX ""
+)
+TARGET_LINK_LIBRARIES(uci_trigger uci)
+
|
