summaryrefslogtreecommitdiffstats
path: root/binding/bluetooth-map-api.c
diff options
context:
space:
mode:
Diffstat (limited to 'binding/bluetooth-map-api.c')
-rw-r--r--binding/bluetooth-map-api.c538
1 files changed, 538 insertions, 0 deletions
diff --git a/binding/bluetooth-map-api.c b/binding/bluetooth-map-api.c
new file mode 100644
index 0000000..798c9fa
--- /dev/null
+++ b/binding/bluetooth-map-api.c
@@ -0,0 +1,538 @@
+/*
+ * Copyright (C) 2019 Konsulko Group
+ * Author: Matt Ranostay <matt.ranostay@konsulko.com>
+ *
+ * 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
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/time.h>
+#include <time.h>
+
+#include <glib.h>
+#include <gio/gio.h>
+#include <json-c/json.h>
+
+#define AFB_BINDING_VERSION 3
+#include <afb/afb-binding.h>
+
+#include "bluetooth-map-api.h"
+#include "bluetooth-map-common.h"
+
+/**
+ * The global thread
+ */
+static GThread *global_thread;
+
+static void signal_init_done(struct init_data *id, int rc)
+{
+ g_mutex_lock(&id->mutex);
+ id->init_done = TRUE;
+ id->rc = rc;
+ g_cond_signal(&id->cond);
+ g_mutex_unlock(&id->mutex);
+}
+
+struct map_state *map_get_userdata(afb_req_t request) {
+ afb_api_t api = afb_req_get_api(request);
+ return afb_api_get_userdata(api);
+}
+
+void call_work_lock(struct map_state *ns)
+{
+ g_mutex_lock(&ns->cw_mutex);
+}
+
+void call_work_unlock(struct map_state *ns)
+{
+ g_mutex_unlock(&ns->cw_mutex);
+}
+
+static afb_event_t get_event_from_value(struct map_state *ns,
+ const char *value)
+{
+ if (!g_strcmp0(value, "notification"))
+ return ns->notification_event;
+
+ return NULL;
+}
+
+static void map_subscribe_unsubscribe(afb_req_t request,
+ gboolean unsub)
+{
+ struct map_state *ns = map_get_userdata(request);
+ json_object *jresp = json_object_new_object();
+ const char *value;
+ afb_event_t event;
+ int rc;
+
+ /* if value exists means to set offline mode */
+ value = afb_req_value(request, "value");
+ if (!value) {
+ afb_req_fail_f(request, "failed", "Missing \"value\" event");
+ return;
+ }
+
+ event = get_event_from_value(ns, value);
+ if (!event) {
+ afb_req_fail_f(request, "failed", "Bad \"value\" event \"%s\"",
+ value);
+ return;
+ }
+
+ if (!unsub) {
+ rc = afb_req_subscribe(request, event);
+ } else {
+ rc = afb_req_unsubscribe(request, event);
+ }
+ if (rc != 0) {
+ afb_req_fail_f(request, "failed",
+ "%s error on \"value\" event \"%s\"",
+ !unsub ? "subscribe" : "unsubscribe",
+ value);
+ return;
+ }
+
+ afb_req_success_f(request, jresp, "Bluetooth MAP %s to event \"%s\"",
+ !unsub ? "subscribed" : "unsubscribed",
+ value);
+}
+
+static void subscribe(afb_req_t request)
+{
+ map_subscribe_unsubscribe(request, FALSE);
+}
+
+static void unsubscribe(afb_req_t request)
+{
+ map_subscribe_unsubscribe(request, TRUE);
+}
+
+static void map_request_message(struct map_state *ns, const gchar *path)
+{
+ GVariant *params =
+ g_variant_new("(&sb)", "", g_variant_new_boolean(FALSE));
+ bluez_call(ns, BLUEZ_AT_MESSAGE, path, "Get", params, NULL);
+}
+
+static void map_notification_event(struct map_state *ns, gchar *filename)
+{
+ json_object *jresp;
+ gchar *buf;
+
+ if (!g_file_get_contents(filename, &buf, NULL, NULL))
+ return;
+
+ jresp = json_object_new_object();
+ json_object_object_add(jresp, "bmessage", json_object_new_string(buf));
+
+ afb_event_push(ns->notification_event, jresp);
+ g_free(buf);
+}
+
+static void bluez_map_signal_callback(
+ GDBusConnection *connection,
+ const gchar *sender_name,
+ const gchar *object_path,
+ const gchar *interface_name,
+ const gchar *signal_name,
+ GVariant *parameters,
+ gpointer user_data)
+{
+ struct map_state *ns = user_data;
+ GVariant *var = NULL;
+ const gchar *path = NULL;
+ const gchar *key = NULL;
+ GVariantIter *array = NULL, *array1 = NULL;
+
+ /* AFB_INFO("sender=%s", sender_name);
+ AFB_INFO("object_path=%s", object_path);
+ AFB_INFO("interface=%s", interface_name);
+ AFB_INFO("signal=%s", signal_name); */
+
+ if (!g_strcmp0(signal_name, "InterfacesAdded")) {
+
+ g_variant_get(parameters, "(&oa{sa{sv}})", &path, &array);
+
+ while (g_variant_iter_next(array, "{&s@a{sv}}", &key, &var)) {
+ const char *name = NULL;
+ GVariant *val = NULL;
+
+ if (!g_strcmp0(key, BLUEZ_OBEX_MESSAGE_INTERFACE)) {
+ map_request_message(ns, path);
+ continue;
+ }
+
+ if (g_strcmp0(key, BLUEZ_OBEX_TRANSFER_INTERFACE))
+ continue;
+
+ array1 = g_variant_iter_new(var);
+
+ while (g_variant_iter_next(array1, "{&sv}", &name, &val)) {
+ if (g_strcmp0(name, "Filename"))
+ continue;
+
+ call_work_lock(ns);
+ g_hash_table_insert(ns->xfer_queue, g_strdup(path),
+ g_strdup(g_variant_get_string(val, NULL)));
+ call_work_unlock(ns);
+ break;
+ }
+ }
+
+ } else if (!g_strcmp0(signal_name, "PropertiesChanged")) {
+
+ g_variant_get(parameters, "(&sa{sv}as)", &path, &array, &array1);
+
+ if (g_strcmp0(path, BLUEZ_OBEX_TRANSFER_INTERFACE))
+ return;
+
+ while (g_variant_iter_next(array, "{&sv}", &key, &var)) {
+ gchar *filename;
+
+ // only check Status field
+ if (g_strcmp0(key, "Status"))
+ continue;
+
+ // only need the "complete" Status
+ if (g_strcmp0(g_variant_get_string(var, NULL), "complete"))
+ return;
+
+ call_work_lock(ns);
+ filename = (gchar *) g_hash_table_lookup(ns->xfer_queue, object_path);
+ if (filename) {
+ g_hash_table_remove(ns->xfer_queue, object_path);
+ call_work_unlock(ns);
+
+ map_notification_event(ns, filename);
+ g_free(filename);
+ break;
+ }
+ call_work_unlock(ns);
+ }
+ }
+}
+
+static struct map_state *map_init(GMainLoop *loop)
+{
+ struct map_state *ns;
+ GError *error = NULL;
+
+ ns = g_try_malloc0(sizeof(*ns));
+ if (!ns) {
+ AFB_ERROR("out of memory allocating map state");
+ goto err_no_ns;
+ }
+
+ AFB_INFO("connecting to dbus");
+
+ ns->loop = loop;
+ ns->conn = g_bus_get_sync(G_BUS_TYPE_SESSION, NULL, &error);
+ if (!ns->conn) {
+ if (error)
+ g_dbus_error_strip_remote_error(error);
+ AFB_ERROR("Cannot connect to D-Bus, %s",
+ error ? error->message : "unspecified");
+ g_error_free(error);
+ goto err_no_conn;
+
+ }
+
+ AFB_INFO("connected to dbus");
+
+ ns->notification_event =
+ afb_daemon_make_event("notification");
+
+ if (!afb_event_is_valid(ns->notification_event)) {
+ AFB_ERROR("Cannot create events");
+ goto err_no_events;
+ }
+
+ ns->xfer_queue = g_hash_table_new(g_str_hash, g_str_equal);
+ ns->message_sub = g_dbus_connection_signal_subscribe(
+ ns->conn,
+ BLUEZ_OBEX_SERVICE,
+ NULL, /* interface */
+ NULL, /* member */
+ NULL, /* object path */
+ NULL, /* arg0 */
+ G_DBUS_SIGNAL_FLAGS_NONE,
+ bluez_map_signal_callback,
+ ns,
+ NULL);
+ if (!ns->message_sub) {
+ AFB_ERROR("Unable to subscribe to interface signals");
+ goto err_no_message_sub;
+ }
+
+ g_mutex_init(&ns->cw_mutex);
+ ns->next_cw_id = 1;
+
+ return ns;
+
+err_no_message_sub:
+ /* no way to clear the events */
+err_no_events:
+ g_dbus_connection_close(ns->conn, NULL, NULL, NULL);
+err_no_conn:
+ g_free(ns);
+err_no_ns:
+ return NULL;
+}
+
+static void map_cleanup(struct map_state *ns)
+{
+ g_dbus_connection_signal_unsubscribe(ns->conn, ns->message_sub);
+ g_dbus_connection_close(ns->conn, NULL, NULL, NULL);
+ g_free(ns);
+}
+
+static gpointer map_func(gpointer ptr)
+{
+ struct init_data *id = ptr;
+ struct map_state *ns;
+ GMainLoop *loop;
+
+ loop = g_main_loop_new(NULL, FALSE);
+ if (!loop) {
+ AFB_ERROR("Unable to create main loop");
+ goto err_no_loop;
+ }
+
+ /* real map init */
+ ns = map_init(loop);
+ if (!ns) {
+ AFB_ERROR("map_init() failed");
+ goto err_no_ns;
+ }
+
+ id->ns = ns;
+ ns->loop = loop;
+
+ afb_api_set_userdata(id->api, ns);
+ signal_init_done(id, 0);
+
+ g_main_loop_run(loop);
+ g_main_loop_unref(ns->loop);
+
+ map_cleanup(ns);
+ afb_api_set_userdata(id->api, NULL);
+
+ return NULL;
+
+err_no_ns:
+ g_main_loop_unref(loop);
+
+err_no_loop:
+ return NULL;
+}
+
+static gboolean map_create_session(struct map_state *ns, const char *address)
+{
+ GVariant *reply, *params, *dict;
+ GVariantBuilder builder;
+ gchar *val;
+
+ g_variant_builder_init(&builder, G_VARIANT_TYPE("a{sv}"));
+ g_variant_builder_add(&builder, "{sv}", "Target", g_variant_new_string("map"));
+ dict = g_variant_builder_end(&builder);
+ params = g_variant_new("(&s@a{sv})", address, dict);
+
+ reply = bluez_call(ns, BLUEZ_AT_CLIENT, NULL, "CreateSession", params, NULL);
+ if (!reply) {
+ AFB_ERROR("Cannot open MAP OBEX session");
+ return FALSE;
+ }
+
+ call_work_lock(ns);
+
+ g_variant_get(reply, "(&o)", &val);
+ ns->session_path = g_strdup(val);
+
+ call_work_unlock(ns);
+
+ g_variant_unref(reply);
+
+ return TRUE;
+}
+
+static gboolean is_map_dev_and_init(struct map_state *ns, struct json_object *dev)
+{
+ struct json_object *props = NULL, *val = NULL;
+ int i;
+
+ json_object_object_get_ex(dev, "properties", &props);
+ if (!props)
+ return FALSE;
+
+ json_object_object_get_ex(props, "connected", &val);
+ if (!val || !json_object_get_boolean(val))
+ return FALSE;
+
+ json_object_object_get_ex(props, "uuids", &val);
+ for (i = 0; i < json_object_array_length(val); i++) {
+ const char *uuid = json_object_get_string(json_object_array_get_idx(val, i));
+ const char *address = NULL;
+ struct json_object *val1 = NULL;
+
+ if (g_strcmp0(MAP_UUID, uuid))
+ continue;
+
+ json_object_object_get_ex(props, "address", &val1);
+ address = json_object_get_string(val1);
+
+ if (!address)
+ return FALSE;
+
+ if (map_create_session(ns, address)) {
+ json_object_object_get_ex(dev, "device", &val1);
+ AFB_NOTICE("MAP device connected: %s", json_object_get_string(val1));
+
+ return TRUE;
+ }
+ break;
+ }
+
+ return FALSE;
+}
+
+static void discovery_result_cb(void *closure, struct json_object *result,
+ const char *error, const char *info,
+ afb_api_t api)
+{
+ struct map_state *ns = afb_api_get_userdata(api);
+ enum json_type type;
+ struct json_object *dev, *tmp;
+ int i;
+
+ if (!json_object_object_get_ex(result, "devices", &tmp))
+ return;
+ type = json_object_get_type(tmp);
+
+ if (type != json_type_array)
+ return;
+
+ for (i = 0; i < json_object_array_length(tmp); i++) {
+ dev = json_object_array_get_idx(tmp, i);
+ if (is_map_dev_and_init(ns, dev))
+ return;
+ }
+}
+
+static void process_connection_event(afb_api_t api, struct json_object *object)
+{
+ struct json_object *val = NULL, *props = NULL;
+ const char *action, *device;
+
+ json_object_object_get_ex(object, "action", &val);
+ if (!val)
+ return;
+ action = json_object_get_string(val);
+ if (g_strcmp0("changed", action))
+ return;
+
+ json_object_object_get_ex(object, "properties", &props);
+ if (!props)
+ return;
+
+ json_object_object_get_ex(props, "connected", &val);
+ if (!val)
+ return;
+
+ if (json_object_get_boolean(val)) {
+ struct json_object *args = json_object_new_object();
+ afb_api_call(api, "Bluetooth-Manager", "managed_objects",
+ args, discovery_result_cb, NULL);
+ return;
+ }
+
+ json_object_object_get_ex(object, "device", &val);
+ if (!val)
+ return;
+
+ device = json_object_get_string(val);
+
+ AFB_NOTICE("MAP device disconnected: %s", device);
+}
+
+static int init(afb_api_t api)
+{
+ struct init_data init_data, *id = &init_data;
+ json_object *args;
+ gint64 end_time;
+ int ret;
+
+ memset(id, 0, sizeof(*id));
+ id->init_done = FALSE;
+ id->rc = 0;
+ id->api = api;
+ g_cond_init(&id->cond);
+ g_mutex_init(&id->mutex);
+
+ ret = afb_daemon_require_api("Bluetooth-Manager", 1);
+ if (ret) {
+ AFB_ERROR("unable to initialize bluetooth binding");
+ return -EINVAL;
+ }
+
+ global_thread = g_thread_new("agl-service-bluetooth-map", map_func, id);
+
+ AFB_INFO("bluetooth-map binding waiting for init done");
+
+ /* wait maximum 3 seconds for init done */
+ end_time = g_get_monotonic_time () + 3 * G_TIME_SPAN_SECOND;
+ g_mutex_lock(&id->mutex);
+ while (!id->init_done) {
+ if (!g_cond_wait_until(&id->cond, &id->mutex, end_time))
+ break;
+ }
+ g_mutex_unlock(&id->mutex);
+
+ /* subscribe to Bluetooth-Manager events */
+ args = json_object_new_object();
+ json_object_object_add(args , "value", json_object_new_string("device_changes"));
+ afb_api_call_sync(api, "Bluetooth-Manager", "subscribe", args, NULL, NULL, NULL);
+
+ args = json_object_new_object();
+ afb_api_call(api, "Bluetooth-Manager", "managed_objects", args, discovery_result_cb, NULL);
+
+ return id->rc;
+}
+
+static void onevent(afb_api_t api, const char *event, struct json_object *object)
+{
+ if (!g_ascii_strcasecmp(event, "Bluetooth-Manager/device_changes"))
+ process_connection_event(api, object);
+ else
+ AFB_ERROR("Unsupported event: %s\n", event);
+}
+
+static const afb_verb_t binding_verbs[] = {
+ { .verb = "subscribe", .callback = subscribe, .info = "Subscribe to events" },
+ { .verb = "unsubscribe",.callback = unsubscribe,.info = "Unsubscribe to events" },
+ {}
+};
+
+/*
+ * description of the binding for afb-daemon
+ */
+const afb_binding_t afbBindingV3 = {
+ .api = "bluetooth-map",
+ .verbs = binding_verbs,
+ .init = init,
+ .onevent = onevent,
+};