/* * Copyright (C) 2016 "IoT.bzh" * Author Romain Forlot <romain.forlot@iot.bzh> * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * 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. * */ #define _GNU_SOURCE // needed for vasprintf #define AFB_BINDING_VERSION 2 #include <afb/afb-binding.h> #include <systemd/sd-event.h> #include <json-c/json_object.h> #include <stdbool.h> #include <string.h> #include "ctl-plugin.h" #include "wrap-json.h" CTLP_REGISTER("low-can"); typedef struct { bool door; bool window; } doorT; typedef struct { doorT* front_left; doorT* front_right; doorT* rear_left; doorT* rear_right; } allDoorsCtxT; // Call at initialisation time CTLP_ONLOAD(plugin, api) { allDoorsCtxT *allDoorCtx = (allDoorsCtxT*)calloc (1, sizeof(allDoorsCtxT)); memset(allDoorCtx, 0, sizeof(allDoorsCtxT)); AFB_NOTICE ("Low-can plugin: label='%s' version='%s' info='%s'", plugin->label, plugin->version, plugin->info); return (void*)allDoorCtx; } CTLP_CAPI (subscribeToLow, source, argsJ, eventJ, context) { json_object* signalArrayJ = NULL, *subscribeArgsJ = NULL, *subscribeFilterJ = NULL, *responseJ = NULL; const char* unit = NULL; double frequency = 0; int err = 0; err = wrap_json_unpack(eventJ, "{so,s?s,s?F !}", "signal", &signalArrayJ, "unit", &unit, "frequency", &frequency); if(err) { AFB_ERROR("Problem to unpack JSON object eventJ: %s", json_object_to_json_string(eventJ)); return err; } if(frequency > 0) { wrap_json_pack(&subscribeFilterJ, "{sf}", "frequency", frequency); } for (int idx = 0; idx < json_object_array_length(signalArrayJ); idx++) { json_object* aSignalJ = json_object_array_get_idx(signalArrayJ, idx); err = wrap_json_pack(&subscribeArgsJ, "{ss, so*}", "event", json_object_get_string(aSignalJ), "filter", subscribeFilterJ); if(err) { AFB_ERROR("Error building subscription query object"); return err; } AFB_DEBUG("Calling subscribe with %s", json_object_to_json_string_ext(subscribeArgsJ, JSON_C_TO_STRING_PRETTY)); err = afb_service_call_sync("low-can", "subscribe", subscribeArgsJ, &responseJ); if(err) { AFB_ERROR("Can't find api 'low-can'"); return err; } } return err; } CTLP_CAPI (isOpen, source, argsJ, eventJ, context) { const char* eventName; json_object *eventStatus = NULL; long long int *timestamp = NULL; allDoorsCtxT *ctx=(allDoorsCtxT*)context; AFB_DEBUG("Here is the situation: source:%s, args:%s, event:%s,\n fld: %s, flw: %s, frd: %s, frw: %s, rld: %s, rlw: %s, rrd: %s, rrw: %s", source->label, json_object_to_json_string(argsJ), json_object_to_json_string(eventJ), ctx->front_left->door ? "true":"false", ctx->front_left->window ? "true":"false", ctx->front_right->door ? "true":"false", ctx->front_right->window ? "true":"false", ctx->rear_left->door ? "true":"false", ctx->rear_left->window ? "true":"false", ctx->rear_right->door ? "true":"false", ctx->rear_right->window ? "true":"false" ); int err = wrap_json_unpack(eventJ, "{ss,sb,s?F}", "event", &eventName, "value", &eventStatus, "timestamp", ×tamp); if(err) { AFB_ERROR("Error parsing event %s", json_object_to_json_string(eventJ)); return -1; } if(strcasestr(eventName, "front_left")) { if(strcasestr(eventName, "door")) {ctx->front_left->door = eventStatus;} else if(strcasestr(eventName, "window")) {ctx->front_left->window = eventStatus;} else {AFB_WARNING("Unexpected behavior, this '%s' is not a door ! ", json_object_to_json_string(eventJ));} } else if(strcasestr(eventName, "front_right")) { if(strcasestr(eventName, "door")) {ctx->front_right->door = eventStatus;} else if(strcasestr(eventName, "window")) {ctx->front_right->window = eventStatus;} else {AFB_WARNING("Unexpected behavior, this '%s' is not a door ! ", json_object_to_json_string(eventJ));} } else if(strcasestr(eventName, "rear_left")) { if(strcasestr(eventName, "door")) {ctx->rear_left->door = eventStatus;} else if(strcasestr(eventName, "window")) {ctx->rear_left->window = eventStatus;} else {AFB_WARNING("Unexpected behavior, this '%s' is not a door ! ", json_object_to_json_string(eventJ));} } else if(strcasestr(eventName, "rear_right")) { if(strcasestr(eventName, "door")) {ctx->rear_right->door = eventStatus;} else if(strcasestr(eventName, "window")) {ctx->rear_right->window = eventStatus;} else {AFB_WARNING("Unexpected behavior, this '%s' is not a door ! ", json_object_to_json_string(eventJ));} } else {AFB_WARNING("Unexpected behavior, this '%s' is not a door ! ", json_object_to_json_string(eventJ));} return 0; }