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+/*
+ * Copyright (C) 2015, 2016 "IoT.bzh"
+ * Author "Romain Forlot" <romain.forlot@iot.bzh>
+ * Author "Loic Collignon" <loic.collignon@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.
+ */
+
+#include "low-can-binding.hpp"
+
+/********************************************************************************
+*
+* Subscription and unsubscription
+*
+*********************************************************************************/
+
+std::vector<std::string> get_name(struct afb_req request)
+{
+ int i, n;
+ std::vector<std::string> ret;
+ struct json_object *args, *a, *x;
+
+ args = afb_req_json(request);
+ if (args == NULL || !json_object_object_get_ex(args, "event", &a))
+ ret.clear();
+ else if (json_object_get_type(a) != json_type_array)
+ ret.push_back(json_object_get_string(a));
+ else
+ {
+ n = json_object_array_length(a);
+ for (i = 0 ; i < n ; i++) {
+ x = json_object_array_get_idx(a, i);
+ ret.push_back(json_object_get_string(x));
+ }
+ }
+
+ return ret;
+}
+
+static const struct afb_verb_desc_v1 verbs[]=
+{
+ { .name= "subscribe", .session= AFB_SESSION_NONE, .callback= subscribe, .info= "subscribe to notification of CAN bus messages." },
+ { .name= "unsubscribe", .session= AFB_SESSION_NONE, .callback= unsubscribe, .info= "unsubscribe a previous subscription." }
+};
+
+static const struct afb_binding binding_desc {
+ AFB_BINDING_VERSION_1,
+ {
+ "CAN bus service",
+ "can",
+ verbs
+ }
+};
+
+extern "C"
+{
+ static void subscribe(struct afb_req request)
+ {
+ int ret;
+ std::vector<std::string> names;
+
+ names = get_name(request);
+ if(names.empty())
+ ret = subscribe_signals(request, "*");
+ else
+ ret = subscribe_signals(request, names);
+ }
+
+ static void unsubscribe(struct afb_req request)
+ {
+ subscribe_unsubscribe(request, false);
+ }
+
+ const struct afb_binding *afbBindingV1Register (const struct afb_binding_interface *itf)
+ {
+ interface = itf;
+
+ return &binding_desc;
+ }
+
+ /**
+ * @brief Initialize the binding.
+ *
+ * @param[in] service Structure which represent the Application Framework Binder.
+ *
+ * @return Exit code, zero if success.
+ */
+ int afbBindingV1ServiceInit(struct afb_service service)
+ {
+ int fd_conf;
+ fd_conf = afb_daemon_rootdir_open_locale(interface->daemon, "can_bus.json", O_RDONLY, NULL);
+
+ /* Open CAN socket */
+ can_bus_t can_bus_handler(interface, fd_conf);
+ if(can_bus_handler.init_can_dev() == 0)
+ {
+ can_bus_handler.start_threads();
+ return 0;
+ }
+
+ return 1;
+ }
+}; \ No newline at end of file