diff options
Diffstat (limited to 'Controller-afb/ctl-lua.c')
| -rw-r--r-- | Controller-afb/ctl-lua.c | 441 |
1 files changed, 220 insertions, 221 deletions
diff --git a/Controller-afb/ctl-lua.c b/Controller-afb/ctl-lua.c index acadfb9..ce631dc 100644 --- a/Controller-afb/ctl-lua.c +++ b/Controller-afb/ctl-lua.c @@ -13,15 +13,15 @@ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. - * ref: - * (manual) https://www.lua.org/manual/5.3/manual.html + * ref: + * (manual) https://www.lua.org/manual/5.3/manual.html * (lua->C) http://www.troubleshooters.com/codecorn/lua/lua_c_calls_lua.htm#_Anatomy_of_a_Lua_Call * (lua/C Var) http://acamara.es/blog/2012/08/passing-variables-from-lua-5-2-to-c-and-vice-versa/ * (Lua/C Lib)https://john.nachtimwald.com/2014/07/12/wrapping-a-c-library-in-lua/ * (Lua/C Table) https://gist.github.com/SONIC3D/10388137 * (Lua/C Nested table) https://stackoverflow.com/questions/45699144/lua-nested-table-from-lua-to-c * (Lua/C Wrapper) https://stackoverflow.com/questions/45699950/lua-passing-handle-to-function-created-with-newlib - * + * */ #define _GNU_SOURCE @@ -58,17 +58,17 @@ typedef struct { } LuaAfbContextT; typedef struct { - const char *callback; - json_object *context; - void *handle; + const char *callback; + json_object *context; + void *handle; } LuaCallServiceT; typedef enum { AFB_MSG_INFO, AFB_MSG_WARNING, - AFB_MSG_NOTICE, - AFB_MSG_DEBUG, - AFB_MSG_ERROR, + AFB_MSG_NOTICE, + AFB_MSG_DEBUG, + AFB_MSG_ERROR, } LuaAfbMessageT; /* @@ -107,16 +107,16 @@ STATIC LuaAfbContextT *LuaCtxPush (lua_State *luaState, afb_req request, void *h return afbContext; } -STATIC void LuaCtxFree (LuaAfbContextT *afbContext) { +STATIC void LuaCtxFree (LuaAfbContextT *afbContext) { free(afbContext->info); free(afbContext); } // Push a json structure on the stack as a LUA table STATIC int LuaPushArgument (json_object *argsJ) { - + //AFB_NOTICE("LuaPushArgument argsJ=%s", json_object_get_string(argsJ)); - + json_type jtype= json_object_get_type(argsJ); switch (jtype) { case json_type_object: { @@ -124,7 +124,7 @@ STATIC int LuaPushArgument (json_object *argsJ) { json_object_object_foreach (argsJ, key, val) { int done = LuaPushArgument (val); if (done) { - lua_setfield(luaState,-2, key); + lua_setfield(luaState,-2, key); } } break; @@ -155,11 +155,11 @@ STATIC int LuaPushArgument (json_object *argsJ) { AFB_WARNING("LuaPushArgument: NULL object type %s", json_object_get_string(argsJ)); return 0; break; - + default: AFB_ERROR("LuaPushArgument: unsupported Json object type %s", json_object_get_string(argsJ)); return 0; - } + } return 1; } @@ -175,9 +175,9 @@ STATIC json_object *LuaTableToJson (lua_State* luaState, int index) { int idx; int tableType; json_object *tableJ= NULL; - + lua_pushnil(luaState); // 1st key - if (index < 0) index--; + if (index < 0) index--; for (idx=1; lua_next(luaState, index) != 0; idx++) { // uses 'key' (at index -2) and 'value' (at index -1) @@ -190,11 +190,11 @@ STATIC json_object *LuaTableToJson (lua_State* luaState, int index) { AFB_ERROR("MIX Lua Table with key string/numeric not supported"); return NULL; } - + const char *key= lua_tostring(luaState, LUA_KEY_INDEX); json_object *argJ= LuaPopOneArg(luaState, LUA_VALUE_INDEX); json_object_object_add(tableJ, key, argJ); - + } else { if (!tableJ) { tableJ= json_object_new_array(); @@ -203,15 +203,15 @@ STATIC json_object *LuaTableToJson (lua_State* luaState, int index) { AFB_ERROR("MIX Lua Table with key string/numeric not supported"); return NULL; } - + json_object *argJ= LuaPopOneArg(luaState, LUA_VALUE_INDEX); json_object_array_add(tableJ, argJ); - } - - - lua_pop(luaState, 1); // removes 'value'; keeps 'key' for next iteration - } - + } + + + lua_pop(luaState, 1); // removes 'value'; keeps 'key' for next iteration + } + // Query is empty free empty json object if (idx == 1) { json_object_put(tableJ); @@ -239,32 +239,32 @@ STATIC json_object *LuaPopOneArg (lua_State* luaState, int idx) { value= json_object_new_boolean(lua_toboolean(luaState, idx)); break; case LUA_TSTRING: - value= json_object_new_string(lua_tostring(luaState, idx)); + value= json_object_new_string(lua_tostring(luaState, idx)); break; - case LUA_TTABLE: + case LUA_TTABLE: value= LuaTableToJson(luaState, idx); - break; + break; case LUA_TNIL: value=json_object_new_string("nil") ; break; case LUA_TUSERDATA: value=json_object_new_int64((int64_t)lua_touserdata(luaState, idx)); // store userdata as int !!! break; - + default: AFB_NOTICE ("LuaPopOneArg: script returned Unknown/Unsupported idx=%d type:%d/%s", idx, luaType, lua_typename(luaState, luaType)); value=NULL; } - return value; + return value; } - -static json_object *LuaPopArgs (lua_State* luaState, int start) { + +static json_object *LuaPopArgs (lua_State* luaState, int start) { json_object *responseJ; - + int stop = lua_gettop(luaState); if(stop-start <0) return NULL; - + // start at 2 because we are using a function array lib if (start == stop) { responseJ=LuaPopOneArg (luaState, start); @@ -274,71 +274,71 @@ static json_object *LuaPopArgs (lua_State* luaState, int start) { for (int idx=start; idx <= stop; idx++) { json_object *argJ=LuaPopOneArg (luaState, idx); if (!argJ) goto OnErrorExit; - json_object_array_add(responseJ, argJ); + json_object_array_add(responseJ, argJ); } } - + return responseJ; - + OnErrorExit: return NULL; -} +} STATIC int LuaFormatMessage(lua_State* luaState, LuaAfbMessageT action) { char *message; json_object *responseJ= LuaPopArgs(luaState, LUA_FIST_ARG); - + if (!responseJ) { luaL_error(luaState,"LuaFormatMessage empty message"); goto OnErrorExit; } - + // if we have only on argument just return the value. if (json_object_get_type(responseJ)!=json_type_array || json_object_array_length(responseJ) <2) { message= (char*)json_object_get_string(responseJ); goto PrintMessage; } - + // extract format and push all other parameter on the stack message = alloca (LUA_MSG_MAX_LENGTH); const char *format = json_object_get_string(json_object_array_get_idx(responseJ, 0)); - + int arrayIdx=1; int targetIdx=0; - + for (int idx=0; format[idx] !='\0'; idx++) { - + if (format[idx]=='%' && format[idx] !='\0') { json_object *slotJ= json_object_array_get_idx(responseJ, arrayIdx); //if (slotJ) AFB_NOTICE("**** idx=%d slotJ=%s", arrayIdx, json_object_get_string(slotJ)); - + switch (format[++idx]) { case 'd': - if (slotJ) targetIdx += snprintf (&message[targetIdx], LUA_MSG_MAX_LENGTH-targetIdx,"%d", json_object_get_int(slotJ)); + if (slotJ) targetIdx += snprintf (&message[targetIdx], LUA_MSG_MAX_LENGTH-targetIdx,"%d", json_object_get_int(slotJ)); else targetIdx += snprintf (&message[targetIdx], LUA_MSG_MAX_LENGTH-targetIdx,"nil"); arrayIdx++; break; case 'f': - if (slotJ) targetIdx += snprintf (&message[targetIdx], LUA_MSG_MAX_LENGTH-targetIdx,"%f", json_object_get_double(slotJ)); + if (slotJ) targetIdx += snprintf (&message[targetIdx], LUA_MSG_MAX_LENGTH-targetIdx,"%f", json_object_get_double(slotJ)); else targetIdx += snprintf (&message[targetIdx], LUA_MSG_MAX_LENGTH-targetIdx,"nil"); arrayIdx++; break; - + case'%': message[targetIdx]='%'; targetIdx++; break; - + case 's': default: - if (slotJ) targetIdx += snprintf (&message[targetIdx], LUA_MSG_MAX_LENGTH-targetIdx,"%s", json_object_get_string(slotJ)); + if (slotJ) targetIdx += snprintf (&message[targetIdx], LUA_MSG_MAX_LENGTH-targetIdx,"%s", json_object_get_string(slotJ)); else targetIdx += snprintf (&message[targetIdx], LUA_MSG_MAX_LENGTH-targetIdx,"nil"); arrayIdx++; } - + } else { if (targetIdx >= LUA_MSG_MAX_LENGTH) { AFB_WARNING ("LuaFormatMessage: message[%s] owerverflow LUA_MSG_MAX_LENGTH=%d", format, LUA_MSG_MAX_LENGTH); @@ -351,46 +351,46 @@ STATIC int LuaFormatMessage(lua_State* luaState, LuaAfbMessageT action) { } message[targetIdx]='\0'; -PrintMessage: +PrintMessage: switch (action) { case AFB_MSG_WARNING: - AFB_WARNING (message); + AFB_WARNING ("%s", message); break; case AFB_MSG_NOTICE: - AFB_NOTICE (message); + AFB_NOTICE ("%s", message); break; case AFB_MSG_DEBUG: - AFB_DEBUG (message); + AFB_DEBUG ("%s", message); break; case AFB_MSG_INFO: - AFB_INFO (message); + AFB_INFO ("%s", message); break; - case AFB_MSG_ERROR: + case AFB_MSG_ERROR: default: - AFB_ERROR (message); + AFB_ERROR ("%s", message); } return 0; // nothing return to lua - + OnErrorExit: // on argument to return (the error message) return 1; } -STATIC int LuaPrintInfo(lua_State* luaState) { +STATIC int LuaPrintInfo(lua_State* luaState) { int err=LuaFormatMessage (luaState, AFB_MSG_INFO); - return err; + return err; } -STATIC int LuaPrintError(lua_State* luaState) { +STATIC int LuaPrintError(lua_State* luaState) { int err=LuaFormatMessage (luaState, AFB_MSG_ERROR); return err; // no value return } -STATIC int LuaPrintWarning(lua_State* luaState) { +STATIC int LuaPrintWarning(lua_State* luaState) { int err=LuaFormatMessage (luaState, AFB_MSG_WARNING); return err; } -STATIC int LuaPrintNotice(lua_State* luaState) { +STATIC int LuaPrintNotice(lua_State* luaState) { int err=LuaFormatMessage (luaState, AFB_MSG_NOTICE); return err; } @@ -403,17 +403,17 @@ STATIC int LuaPrintDebug(lua_State* luaState) { STATIC int LuaAfbSuccess(lua_State* luaState) { LuaAfbContextT *afbContext= LuaCtxCheck(luaState, LUA_FIST_ARG); if (!afbContext) goto OnErrorExit; - + // ignore context argument json_object *responseJ= LuaPopArgs(luaState, LUA_FIST_ARG+1); if (responseJ == JSON_ERROR) return 1; - + afb_req_success(afbContext->request, responseJ, NULL); LuaCtxFree(afbContext); return 0; - - OnErrorExit: + + OnErrorExit: lua_error(luaState); return 1; } @@ -421,26 +421,26 @@ STATIC int LuaAfbSuccess(lua_State* luaState) { STATIC int LuaAfbFail(lua_State* luaState) { LuaAfbContextT *afbContext= LuaCtxCheck(luaState, LUA_FIST_ARG); if (!afbContext) goto OnErrorExit; - + json_object *responseJ= LuaPopArgs(luaState, LUA_FIST_ARG+1); if (responseJ == JSON_ERROR) return 1; afb_req_fail(afbContext->request, afbContext->info, json_object_get_string(responseJ)); - - LuaCtxFree(afbContext); - return 0; - OnErrorExit: + LuaCtxFree(afbContext); + return 0; + + OnErrorExit: lua_error(luaState); return 1; } -STATIC void LuaAfbServiceCB(void *handle, int iserror, struct json_object *responseJ) { +STATIC void LuaAfbServiceCB(void *handle, int iserror, struct json_object *responseJ) { LuaCallServiceT *contextCB= (LuaCallServiceT*)handle; int count=1; - + lua_getglobal(luaState, contextCB->callback); - + // push error status & response lua_pushboolean(luaState, iserror); count+= LuaPushArgument(responseJ); @@ -450,35 +450,35 @@ STATIC void LuaAfbServiceCB(void *handle, int iserror, struct json_object *respo if (err) { AFB_ERROR ("LUA-SERICE-CB:FAIL response=%s err=%s", json_object_get_string(responseJ), lua_tostring(luaState,-1) ); } - + free (contextCB); } STATIC int LuaAfbService(lua_State* luaState) { int count = lua_gettop(luaState); - + // note: argument start at 2 because of AFB: table if (count <5 || !lua_isstring(luaState, 2) || !lua_isstring(luaState, 3) || !lua_istable(luaState, 4) || !lua_isstring(luaState, 5)) { lua_pushliteral (luaState, "LuaAfbServiceCall-Syntax is AFB:service_call (api, verb, query, callback, handle ...."); - goto OnErrorExit; + goto OnErrorExit; } - + // get api/verb+query const char *api = lua_tostring(luaState,2); const char *verb= lua_tostring(luaState,3); json_object *queryJ= LuaTableToJson(luaState, 4); if (queryJ == JSON_ERROR) return 1; - - LuaCallServiceT *contextCB = calloc (1, sizeof(LuaCallServiceT)); + + LuaCallServiceT *contextCB = calloc (1, sizeof(LuaCallServiceT)); contextCB->callback= lua_tostring(luaState, 5); contextCB->context = LuaPopArgs(luaState, 6); - + afb_service_call(api, verb, queryJ, LuaAfbServiceCB, contextCB); - + return 0; // no value return - - OnErrorExit: + + OnErrorExit: lua_error(luaState); return 1; } @@ -486,27 +486,27 @@ STATIC int LuaAfbService(lua_State* luaState) { STATIC int LuaAfbServiceSync(lua_State* luaState) { int count = lua_gettop(luaState); json_object *responseJ; - + // note: argument start at 2 because of AFB: table if (count <3 || !lua_isstring(luaState, 2) || !lua_isstring(luaState, 3) || !lua_istable(luaState, 4)) { lua_pushliteral (luaState, "LuaAfbServiceSync-Syntax is error,data=AFB:service_call (api, verb, query)"); - goto OnErrorExit; + goto OnErrorExit; } - + // get api/verb+query const char *api = lua_tostring(luaState,2); const char *verb= lua_tostring(luaState,3); json_object *queryJ= LuaTableToJson(luaState, 4); - + int iserror=afb_service_call_sync (api, verb, queryJ, &responseJ); - + // push error status & response count=1; lua_pushboolean(luaState, iserror); count+= LuaPushArgument(responseJ); return count; // return count values - - OnErrorExit: + + OnErrorExit: lua_error(luaState); return 1; } @@ -514,7 +514,7 @@ STATIC int LuaAfbServiceSync(lua_State* luaState) { STATIC int LuaAfbEventPush(lua_State* luaState) { LuaAfbEvent *afbevt; int index; - + // if no private event handle then use default binding event if (lua_islightuserdata(luaState, LUA_FIST_ARG)) { afbevt = (LuaAfbEvent*) lua_touserdata(luaState, LUA_FIST_ARG); @@ -528,13 +528,13 @@ STATIC int LuaAfbEventPush(lua_State* luaState) { lua_pushliteral (luaState, "LuaAfbMakePush-Fail invalid event"); goto OnErrorExit; } - + json_object *ctlEventJ= LuaTableToJson(luaState, index); if (!ctlEventJ) { lua_pushliteral (luaState, "LuaAfbEventPush-Syntax is AFB:signal ([evtHandle], {lua table})"); - goto OnErrorExit; + goto OnErrorExit; } - + int done = afb_event_push(afbevt->event, ctlEventJ); if (!done) { lua_pushliteral (luaState, "LuaAfbEventPush-Fail No Subscriber to event"); @@ -542,22 +542,22 @@ STATIC int LuaAfbEventPush(lua_State* luaState) { goto OnErrorExit; } afbevt->count++; - return 0; - - OnErrorExit: + return 0; + + OnErrorExit: lua_error(luaState); return 1; } STATIC int LuaAfbEventSubscribe(lua_State* luaState) { LuaAfbEvent *afbevt; - + LuaAfbContextT *afbContext= LuaCtxCheck(luaState, LUA_FIST_ARG); if (!afbContext) { lua_pushliteral (luaState, "LuaAfbEventSubscribe-Fail Invalid request handle"); goto OnErrorExit; } - + // if no private event handle then use default binding event if (lua_islightuserdata(luaState, LUA_FIST_ARG+1)) { afbevt = (LuaAfbEvent*) lua_touserdata(luaState, LUA_FIST_ARG+1); @@ -569,7 +569,7 @@ STATIC int LuaAfbEventSubscribe(lua_State* luaState) { lua_pushliteral (luaState, "LuaAfbMakePush-Fail invalid event handle"); goto OnErrorExit; } - + int err = afb_req_subscribe(afbContext->request, afbevt->event); if (err) { lua_pushliteral (luaState, "LuaAfbEventSubscribe-Fail No Subscriber to event"); @@ -577,9 +577,9 @@ STATIC int LuaAfbEventSubscribe(lua_State* luaState) { goto OnErrorExit; } afbevt->count++; - return 0; - - OnErrorExit: + return 0; + + OnErrorExit: lua_error(luaState); return 1; } @@ -587,12 +587,12 @@ STATIC int LuaAfbEventSubscribe(lua_State* luaState) { STATIC int LuaAfbEventMake(lua_State* luaState) { int count = lua_gettop(luaState); LuaAfbEvent *afbevt=calloc(1,sizeof(LuaAfbEvent)); - + if (count != LUA_FIST_ARG || !lua_isstring(luaState, LUA_FIST_ARG)) { lua_pushliteral (luaState, "LuaAfbEventMake-Syntax is evtHandle= AFB:event ('myEventName')"); - goto OnErrorExit; + goto OnErrorExit; } - + // event name should be the only argument afbevt->name= strdup (lua_tostring(luaState,LUA_FIST_ARG)); @@ -605,64 +605,64 @@ STATIC int LuaAfbEventMake(lua_State* luaState) { // push event handler as a LUA opaque handle lua_pushlightuserdata(luaState, afbevt); - return 1; - - OnErrorExit: + return 1; + + OnErrorExit: lua_error(luaState); return 1; } -// Function call from LUA when lua2c plugin L2C is used +// Function call from LUA when lua2c plugin L2C is used PUBLIC int Lua2cWrapper(lua_State* luaState, char *funcname, Lua2cFunctionT callback, void *context) { - + json_object *argsJ= LuaPopArgs(luaState, LUA_FIST_ARG+1); int response = (*callback) (funcname, argsJ, context); - + // push response to LUA lua_pushinteger(luaState, response); - return 1; + return 1; } // Generated some fake event based on watchdog/counter PUBLIC int LuaCallFunc (DispatchSourceT source, DispatchActionT *action, json_object *queryJ) { - + int err, count; json_object* argsJ = action->argsJ; const char* func = action->call; - + // load function (should exist in CONTROL_PATH_LUA lua_getglobal(luaState, func); // push source on the stack count=1; - lua_pushinteger(luaState, source); - + lua_pushinteger(luaState, source); + // push argsJ on the stack if (!argsJ) { lua_pushnil(luaState); count++; - } else { + } else { count+= LuaPushArgument (argsJ); } - + // push queryJ on the stack if (!queryJ) { lua_pushnil(luaState); count++; - } else { + } else { count+= LuaPushArgument (queryJ); - } + } - // effectively exec LUA script code + // effectively exec LUA script code err=lua_pcall(luaState, count, 1, 0); if (err) { AFB_ERROR("LuaCallFunc Fail calling %s error=%s", func, lua_tostring(luaState,-1)); goto OnErrorExit; } - + // return LUA script value - int rc= (int)lua_tointeger(luaState, -1); + int rc= (int)lua_tointeger(luaState, -1); return rc; OnErrorExit: @@ -670,15 +670,15 @@ PUBLIC int LuaCallFunc (DispatchSourceT source, DispatchActionT *action, json_ob } -// Execute LUA code from received API request +// Execute LUA code from received API request STATIC void LuaDoAction (LuaDoActionT action, afb_req request) { - + int err, count=0; - - json_object* queryJ = afb_req_json(request); - + + json_object* queryJ = afb_req_json(request); + switch (action) { - + case LUA_DOSTRING: { const char *script = json_object_get_string(queryJ); err=luaL_loadstring(luaState, script); @@ -689,14 +689,14 @@ STATIC void LuaDoAction (LuaDoActionT action, afb_req request) { // Push AFB client context on the stack LuaAfbContextT *afbContext= LuaCtxPush(luaState, request,NULL,script); if (!afbContext) goto OnErrorExit; - + break; } - + case LUA_DOCALL: { const char *func; json_object *argsJ=NULL; - + err= wrap_json_unpack (queryJ, "{s:s, s?o !}", "target", &func, "args", &argsJ); if (err) { AFB_ERROR ("LUA-DOCALL-SYNTAX missing target|args query=%s", json_object_get_string(queryJ)); @@ -705,7 +705,7 @@ STATIC void LuaDoAction (LuaDoActionT action, afb_req request) { // load function (should exist in CONTROL_PATH_LUA lua_getglobal(luaState, func); - + // Push AFB client context on the stack LuaAfbContextT *afbContext= LuaCtxPush(luaState, request, NULL, func); if (!afbContext) goto OnErrorExit; @@ -714,18 +714,18 @@ STATIC void LuaDoAction (LuaDoActionT action, afb_req request) { if (!argsJ) { lua_pushnil(luaState); count++; - } else { + } else { count+= LuaPushArgument (argsJ); } - + break; } - + case LUA_DOSCRIPT: { // Fulup need to fix argument passing char *filename; char*fullpath; char luaScriptPath[CONTROL_MAXPATH_LEN]; int index; - + // scan luascript search path once static json_object *luaScriptPathJ =NULL; @@ -740,89 +740,89 @@ STATIC void LuaDoAction (LuaDoActionT action, afb_req request) { // search for filename=script in CONTROL_LUA_PATH if (!luaScriptPathJ) { - strncpy(luaScriptPath,CONTROL_DOSCRIPT_PRE, sizeof(luaScriptPath)); - strncat(luaScriptPath,"-", sizeof(luaScriptPath)); - strncat(luaScriptPath,target, sizeof(luaScriptPath)); + strncpy(luaScriptPath,CONTROL_DOSCRIPT_PRE, sizeof(luaScriptPath)); + strncat(luaScriptPath,"-", sizeof(luaScriptPath)); + strncat(luaScriptPath,target, sizeof(luaScriptPath)); luaScriptPathJ= ScanForConfig(CONTROL_LUA_PATH , CTL_SCAN_RECURSIVE,luaScriptPath,".lua"); - } + } for (index=0; index < json_object_array_length(luaScriptPathJ); index++) { - json_object *entryJ=json_object_array_get_idx(luaScriptPathJ, index); - + json_object *entryJ=json_object_array_get_idx(luaScriptPathJ, index); + err= wrap_json_unpack (entryJ, "{s:s, s:s !}", "fullpath", &fullpath,"filename", &filename); if (err) { AFB_ERROR ("LUA-DOSCRIPT-SCAN:HOOPs invalid config file path = %s", json_object_get_string(entryJ)); goto OnErrorExit; } - + if (index > 0) AFB_WARNING("LUA-DOSCRIPT-SCAN:Ignore second script=%s path=%s", filename, fullpath); else { strncpy (luaScriptPath, fullpath, sizeof(luaScriptPath)); strncat (luaScriptPath, "/", sizeof(luaScriptPath)); - strncat (luaScriptPath, filename, sizeof(luaScriptPath)); - } + strncat (luaScriptPath, filename, sizeof(luaScriptPath)); + } } - - err= luaL_loadfile(luaState, luaScriptPath); + + err= luaL_loadfile(luaState, luaScriptPath); if (err) { AFB_ERROR ("LUA-DOSCRIPT HOOPs Error in LUA loading scripts=%s err=%s", luaScriptPath, lua_tostring(luaState,-1)); goto OnErrorExit; } - + // script was loaded we need to parse to make it executable err=lua_pcall(luaState, 0, 0, 0); if (err) { AFB_ERROR ("LUA-DOSCRIPT:FAIL to load %s", luaScriptPath); goto OnErrorExit; } - + // if no func name given try to deduct from filename - if (!func && (func=(char*)GetMidleName(filename))!=NULL) { + if (!func && (func=(char*)GetMidleName(filename))!=NULL) { strncpy(luaScriptPath,"_", sizeof(luaScriptPath)); strncat(luaScriptPath,func, sizeof(luaScriptPath)); func=luaScriptPath; } if (!func) { AFB_ERROR ("LUA-DOSCRIPT:FAIL to deduct funcname from %s", filename); - goto OnErrorExit; + goto OnErrorExit; } - + // load function (should exist in CONTROL_PATH_LUA lua_getglobal(luaState, func); - + // Push AFB client context on the stack LuaAfbContextT *afbContext= LuaCtxPush(luaState, request, NULL, func); if (!afbContext) goto OnErrorExit; - + // push function arguments if (!argsJ) { lua_pushnil(luaState); count++; - } else { + } else { count+= LuaPushArgument(argsJ); } - + break; } - - default: + + default: AFB_ERROR ("LUA-DOSCRIPT-ACTION unknown query=%s", json_object_get_string(queryJ)); goto OnErrorExit; } - - // effectively exec LUA code (afb_reply/fail done later from callback) + + // effectively exec LUA code (afb_reply/fail done later from callback) err=lua_pcall(luaState, count+1, 0, 0); if (err) { AFB_ERROR ("LUA-DO-EXEC:FAIL query=%s err=%s", json_object_get_string(queryJ), lua_tostring(luaState,-1)); goto OnErrorExit; } return; - + OnErrorExit: afb_req_fail(request,"LUA:ERROR", lua_tostring(luaState,-1)); return; } -PUBLIC void ctlapi_execlua (afb_req request) { +PUBLIC void ctlapi_execlua (afb_req request) { LuaDoAction (LUA_DOSTRING, request); } @@ -835,77 +835,77 @@ PUBLIC void ctlapi_debuglua (afb_req request) { } STATIC int LuaTimerClear (lua_State* luaState) { - + // Get Timer Handle LuaAfbContextT *afbContext= LuaCtxCheck(luaState, LUA_FIST_ARG); if (!afbContext) goto OnErrorExit; - - // retrieve useful information opaque handle + + // retrieve useful information opaque handle TimerHandleT *timerHandle = (TimerHandleT*)afbContext->handle; - + AFB_NOTICE ("LuaTimerClear timer=%s", timerHandle->label); TimerEvtStop(timerHandle); - + return 0; //happy end - + OnErrorExit: return 1; } STATIC int LuaTimerGet (lua_State* luaState) { - + // Get Timer Handle LuaAfbContextT *afbContext= LuaCtxCheck(luaState, LUA_FIST_ARG); if (!afbContext) goto OnErrorExit; - - // retrieve useful information opaque handle + + // retrieve useful information opaque handle TimerHandleT *timerHandle = (TimerHandleT*)afbContext->handle; - + // create response as a JSON object json_object *responseJ= json_object_new_object(); - json_object_object_add(responseJ,"label", json_object_new_string(timerHandle->label)); - json_object_object_add(responseJ,"delay", json_object_new_int(timerHandle->delay)); - json_object_object_add(responseJ,"count", json_object_new_int(timerHandle->count)); - + json_object_object_add(responseJ,"label", json_object_new_string(timerHandle->label)); + json_object_object_add(responseJ,"delay", json_object_new_int(timerHandle->delay)); + json_object_object_add(responseJ,"count", json_object_new_int(timerHandle->count)); + // return JSON object as Lua table int count=LuaPushArgument(responseJ); - + // free json object json_object_put(responseJ); - + return count; // return argument - + OnErrorExit: return 0; } // Timer Callback -// Set timer +// Set timer STATIC int LuaTimerSetCB (void *handle) { LuaCallServiceT *contextCB =(LuaCallServiceT*) handle; TimerHandleT *timerHandle = (TimerHandleT*) contextCB->handle; int count; - + // push timer handle and user context on Lua stack lua_getglobal(luaState, contextCB->callback); - + // Push timer handle LuaAfbContextT *afbContext= LuaCtxPush(luaState, NULL_AFBREQ, contextCB->handle, timerHandle->label); if (!afbContext) goto OnErrorExit; count=1; - + // Push user Context - count+= LuaPushArgument(contextCB->context); - - int err=lua_pcall(luaState, count, LUA_MULTRET, 0); + count+= LuaPushArgument(contextCB->context); + + int err=lua_pcall(luaState, count, LUA_MULTRET, 0); if (err) { AFB_ERROR ("LUA-TIMER-CB:FAIL response=%s err=%s", json_object_get_string(contextCB->context), lua_tostring(luaState,-1)); goto OnErrorExit; } - + // get return parameter if (!lua_isboolean(luaState, -1)) { - return (lua_toboolean(luaState, -1)); + return (lua_toboolean(luaState, -1)); } // timer last run free context resource @@ -913,7 +913,7 @@ STATIC int LuaTimerSetCB (void *handle) { LuaCtxFree(afbContext); } return 0; // By default we are happy - + OnErrorExit: return 1; // stop timer } @@ -930,13 +930,13 @@ STATIC int LuaTimerSet(lua_State* luaState) { lua_pushliteral(luaState, "LuaTimerSet-Syntax timerset (timerT, 'callback', contextT)"); goto OnErrorExit; } - + int err = wrap_json_unpack(timerJ, "{ss, s?s si, si !}", "label", &label, "info", &info, "delay", &delay, "count", &count); if (err) { lua_pushliteral(luaState, "LuaTimerSet-Syntax timerT={label:xxx delay:ms, count:xx}"); goto OnErrorExit; } - + // everything look fine create timer structure TimerHandleT *timerHandle = malloc (sizeof (TimerHandleT)); timerHandle->delay=delay; @@ -944,14 +944,14 @@ STATIC int LuaTimerSet(lua_State* luaState) { timerHandle->label=label; // Allocate handle to store context and callback - LuaCallServiceT *contextCB = calloc (1, sizeof(LuaCallServiceT)); + LuaCallServiceT *contextCB = calloc (1, sizeof(LuaCallServiceT)); contextCB->callback= callback; contextCB->context = contextJ; contextCB->handle = timerHandle; // fire timer TimerEvtStart (timerHandle, LuaTimerSetCB, contextCB); - + return 0; // Happy No Return Function OnErrorExit: @@ -984,39 +984,39 @@ static const luaL_Reg afbFunction[] = { {"subscribe" , LuaAfbEventSubscribe}, {"evtmake" , LuaAfbEventMake}, {"evtpush" , LuaAfbEventPush}, - + {NULL, NULL} /* sentinel */ }; // Create Binding Event at Init PUBLIC int LuaLibInit () { int err, index; - + // search for default policy config file char fullprefix[CONTROL_MAXPATH_LEN]; strncpy (fullprefix, CONTROL_CONFIG_PRE "-", sizeof(fullprefix)); strncat (fullprefix, GetBinderName(), sizeof(fullprefix)); strncat (fullprefix, "-", sizeof(fullprefix)); - + const char *dirList= getenv("CONTROL_LUA_PATH"); if (!dirList) dirList=CONTROL_LUA_PATH; - + json_object *luaScriptPathJ = ScanForConfig(dirList , CTL_SCAN_RECURSIVE, fullprefix, "lua"); - + // open a new LUA interpretor luaState = luaL_newstate(); if (!luaState) { AFB_ERROR ("LUA_INIT: Fail to open lua interpretor"); goto OnErrorExit; } - + // load auxiliary libraries luaL_openlibs(luaState); - // redirect print to AFB_NOTICE + // redirect print to AFB_NOTICE luaL_newlib(luaState, afbFunction); lua_setglobal(luaState, "AFB"); - + // create default lua event to send test pause/resume luaDefaultEvt=calloc(1,sizeof(LuaAfbEvent)); luaDefaultEvt->name=CONTROL_LUA_EVENT; @@ -1025,45 +1025,44 @@ PUBLIC int LuaLibInit () { AFB_ERROR ("POLCTL_INIT: Cannot register lua-events=%s ", CONTROL_LUA_EVENT); goto OnErrorExit;; } - + // load+exec any file found in LUA search path for (index=0; index < json_object_array_length(luaScriptPathJ); index++) { json_object *entryJ=json_object_array_get_idx(luaScriptPathJ, index); - + char *filename; char*fullpath; err= wrap_json_unpack (entryJ, "{s:s, s:s !}", "fullpath", &fullpath,"filename", &filename); if (err) { AFB_ERROR ("LUA-INIT HOOPs invalid config file path = %s", json_object_get_string(entryJ)); goto OnErrorExit; } - + char filepath[CONTROL_MAXPATH_LEN]; - strncpy(filepath, fullpath, sizeof(filepath)); - strncat(filepath, "/", sizeof(filepath)); - strncat(filepath, filename, sizeof(filepath)); - err= luaL_loadfile(luaState, filepath); + strncpy(filepath, fullpath, sizeof(filepath)); + strncat(filepath, "/", sizeof(filepath)); + strncat(filepath, filename, sizeof(filepath)); + err= luaL_loadfile(luaState, filepath); if (err) { AFB_ERROR ("LUA-LOAD HOOPs Error in LUA loading scripts=%s err=%s", filepath, lua_tostring(luaState,-1)); goto OnErrorExit; } - + // exec/compil script err = lua_pcall(luaState, 0, 0, 0); if (err) { AFB_ERROR ("LUA-LOAD HOOPs Error in LUA exec scripts=%s err=%s", filepath, lua_tostring(luaState,-1)); goto OnErrorExit; - } + } } - + // no policy config found remove control API from binder if (index == 0) { AFB_WARNING ("POLICY-INIT:WARNING (setenv CONTROL_LUA_PATH) No LUA '%s*.lua' in '%s'", fullprefix, dirList); } - + AFB_DEBUG ("Audio control-LUA Init Done"); return 0; - - OnErrorExit: + + OnErrorExit: return 1; } -
\ No newline at end of file |