diff options
author | Romain Forlot <romain.forlot@iot.bzh> | 2017-02-14 14:32:55 +0100 |
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committer | Romain Forlot <romain.forlot@iot.bzh> | 2017-02-14 14:32:55 +0100 |
commit | c2a2b12c1ec1a4e17a3c95ceb8f010ce961a909e (patch) | |
tree | 049a4cd7ebbbd2e8d6b4df3939b12e6303de805c /low-can-binding.cpp | |
parent | 3a24351bda1208281189d17850555c017a7d342b (diff) |
Move sources into src directory
make some cleaning
Signed-off-by: Romain Forlot <romain.forlot@iot.bzh>
Diffstat (limited to 'low-can-binding.cpp')
-rw-r--r-- | low-can-binding.cpp | 253 |
1 files changed, 0 insertions, 253 deletions
diff --git a/low-can-binding.cpp b/low-can-binding.cpp deleted file mode 100644 index b6098907..00000000 --- a/low-can-binding.cpp +++ /dev/null @@ -1,253 +0,0 @@ -/* - * 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 <unistd.h> -#include <sys/types.h> -#include <sys/socket.h> -#include <sys/ioctl.h> -#include <net/if.h> -#include <linux/can.h> -#include <linux/can/raw.h> -#include <fcntl.h> -#include <systemd/sd-event.h> -#include <errno.h> -#include <vector> -#include <map> -#include <queue> -#include <string> -#include <functional> -#include <memory> -#include <thread> - -#include <json-c/json.h> -#include <openxc.pb.h> - -#include <afb/afb-binding.h> -#include <afb/afb-service-itf.h> - -#include "ll-can-binding.h" -#include "obd2.h" - -/* - * Interface between the daemon and the binding - */ -static const struct afb_binding_interface *interface; - -/******************************************************************************** -* -* Event management -* -*********************************************************************************/ - -/* - * TBF TBF TBF - * called on an event on the CAN bus - */ -static int on_event(sd_event_source *s, int fd, uint32_t revents, void *userdata) -{ - openxc_CanMessage can_message; - - can_message = openxc_CanMessage_init_default; - - /* read available data */ - if ((revents & EPOLLIN) != 0) - { - read_can(&can_message); - send_event(); - } - - /* check if error or hangup */ - if ((revents & (EPOLLERR|EPOLLRDHUP|EPOLLHUP)) != 0) - { - sd_event_source_unref(s); - close(fd); - connect_to_event_loop(); - } - - return 0; -} - -/* - * USELESS SINCE THREADS SEPARATION - * - * Get the event loop running. - * Will trigger on_event function on EPOLLIN event on socket - * - * Return 0 or positive value on success. Else negative value for failure. -static int connect_to_event_loop(CanBus &CanBus_handler) -{ - sd_event *event_loop; - sd_event_source *source; - int rc; - - if (CanBus_handler.socket < 0) - { - return CanBus_handler.socket; - } - - event_loop = afb_daemon_get_event_loop(interface->daemon); - rc = sd_event_add_io(event_loop, &source, CanBus_handler.socket, EPOLLIN, on_event, NULL); - if (rc < 0) - { - CanBus_handler.close(); - ERROR(interface, "Can't connect CAN bus %s to the event loop", CanBus_handler.device); - } else - { - NOTICE(interface, "Connected CAN bus %s to the event loop", CanBus_handler.device); - } - - return rc; -} - */ - -/******************************************************************************** -* -* Subscription and unsubscription -* -*********************************************************************************/ - -static int subscribe_unsubscribe_sig(struct afb_req request, int subscribe, struct signal *sig) -{ - if (!afb_event_is_valid(sig->event)) { - if (!subscribe) - return 1; - sig->event = afb_daemon_make_event(afbitf->daemon, sig->name); - if (!afb_event_is_valid(sig->event)) { - return 0; - } - } - - if (((subscribe ? afb_req_subscribe : afb_req_unsubscribe)(request, sig->event)) < 0) { - return 0; - } - - return 1; -} - -static int subscribe_unsubscribe_all(struct afb_req request, int subscribe) -{ - int i, n, e; - - n = sizeof OBD2_PIDS / sizeof * OBD2_PIDS; - e = 0; - for (i = 0 ; i < n ; i++) - e += !subscribe_unsubscribe_sig(request, subscribe, &OBD2_PIDS[i]); - return e == 0; -} - -static int subscribe_unsubscribe_name(struct afb_req request, int subscribe, const char *name) -{ - struct signal *sig; - - if (0 == strcmp(name, "*")) - return subscribe_unsubscribe_all(request, subscribe); - - sig = getSignal(name); - if (sig == NULL) { - return 0; - } - - return subscribe_unsubscribe_sig(request, subscribe, sig); -} - -static void subscribe_unsubscribe(struct afb_req request, int subscribe) -{ - int ok, i, n; - struct json_object *args, *a, *x; - - /* makes the subscription/unsubscription */ - args = afb_req_json(request); - if (args == NULL || !json_object_object_get_ex(args, "event", &a)) { - ok = subscribe_unsubscribe_all(request, subscribe); - } else if (json_object_get_type(a) != json_type_array) { - ok = subscribe_unsubscribe_name(request, subscribe, json_object_get_string(a)); - } else { - n = json_object_array_length(a); - ok = 0; - for (i = 0 ; i < n ; i++) { - x = json_object_array_get_idx(a, i); - if (subscribe_unsubscribe_name(request, subscribe, json_object_get_string(x))) - ok++; - } - ok = (ok == n); - } - - /* send the report */ - if (ok) - afb_req_success(request, NULL, NULL); - else - afb_req_fail(request, "error", NULL); -} - -static void subscribe(struct afb_req request) -{ - subscribe_unsubscribe(request, 1); -} - -static void unsubscribe(struct afb_req request) -{ - subscribe_unsubscribe(request, 0); -} -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." }, - {NULL} -}; - -static const struct afb_binding binding_desc = { - .type = AFB_BINDING_VERSION_1, - .v1 = { - .info = "CAN bus service", - .prefix = "can", - .verbs = verbs - } -}; - -const struct afb_binding *afbBindingV1Register (const struct afb_binding_interface *itf) -{ - interface = itf; - - return &binding_desc; -} - -int afbBindingV1ServiceInit(struct afb_service service) -{ - std::ifstream fd_conf; - std::string fd_conf_content; - json_object jo_canbus; - - /* Open JSON conf file */ - jo_canbus = json_object_new_object(); - fd_conf = afb_daemon_rootdir_open_locale(interface->daemon, "canbus.json", O_RDONLY, NULL); - if (fd_conf) - { - fd_conf.seekg(0, std::ios::end); - fd_conf_content.resize(fd_conf.tellg()); - fd_conf.seekg(0, std::ios::beg); - fd_conf.read(&fd_conf_content[0], fd_conf_content.size()); - fd_conf.close(); - } - - jo_canbus = json_tokener_parse(&fd_conf_content); - - /* Open CAN socket */ - CanBus_c CanBus_handler(interface, json_object_get_string(json_object_object_get(jo_canbus, "deviceName")); - CanBus_handler.open(); - CanBus_handler.start_threads(); -} |