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-rw-r--r--binding/bluetooth-bluez.c513
1 files changed, 513 insertions, 0 deletions
diff --git a/binding/bluetooth-bluez.c b/binding/bluetooth-bluez.c
new file mode 100644
index 0000000..990a244
--- /dev/null
+++ b/binding/bluetooth-bluez.c
@@ -0,0 +1,513 @@
+/*
+ * Copyright 2018 Konsulko Group
+ * Author: Pantelis Antoniou <pantelis.antoniou@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 <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <errno.h>
+#include <pthread.h>
+#include <semaphore.h>
+
+#include <glib.h>
+#include <stdlib.h>
+#include <gio/gio.h>
+#include <glib-object.h>
+
+#include <json-c/json.h>
+
+#define AFB_BINDING_VERSION 3
+#include <afb/afb-binding.h>
+
+#include "bluetooth-api.h"
+#include "bluetooth-common.h"
+
+static const struct property_info adapter_props[] = {
+ { .name = "UUIDs", .fmt = "as", },
+ { .name = "Discoverable", .fmt = "b", },
+ { .name = "Discovering", .fmt = "b", },
+ { .name = "Pairable", .fmt = "b", },
+ { .name = "Powered", .fmt = "b", },
+ { .name = "Address", .fmt = "s", },
+ { .name = "AddressType", .fmt = "s", },
+ { .name = "DiscoverableTimeout",.fmt = "u", },
+ { .name = "PairableTimeout", .fmt = "u", },
+ { },
+};
+
+static const struct property_info device_props[] = {
+ { .name = "Address", .fmt = "s", },
+ { .name = "AddressType", .fmt = "s", },
+ { .name = "Name", .fmt = "s", },
+ { .name = "Adapter", .fmt = "s", },
+ { .name = "Alias", .fmt = "s", },
+ { .name = "Class", .fmt = "u", },
+ { .name = "Icon", .fmt = "s", },
+ { .name = "Modalias", .fmt = "s", },
+ { .name = "Paired", .fmt = "b", },
+ { .name = "Trusted", .fmt = "b", },
+ { .name = "Blocked", .fmt = "b", },
+ { .name = "LegacyPairing", .fmt = "b", },
+ { .name = "TxPower", .fmt = "n", },
+ { .name = "RSSI", .fmt = "n", },
+ { .name = "Connected", .fmt = "b", },
+ { .name = "UUIDs", .fmt = "as", },
+ { .name = "Adapter", .fmt = "s", },
+ { .name = "ServicesResolved", .fmt = "b", },
+ { },
+};
+
+const struct property_info *bluez_get_property_info(
+ const char *access_type, GError **error)
+{
+ const struct property_info *pi = NULL;
+
+ if (!strcmp(access_type, BLUEZ_AT_ADAPTER))
+ pi = adapter_props;
+ else if (!strcmp(access_type, BLUEZ_AT_DEVICE))
+ pi = device_props;
+ else
+ g_set_error(error, NB_ERROR, NB_ERROR_ILLEGAL_ARGUMENT,
+ "illegal %s argument", access_type);
+ return pi;
+}
+
+gboolean bluez_property_dbus2json(const char *access_type,
+ json_object *jprop, const gchar *key, GVariant *var,
+ gboolean *is_config,
+ GError **error)
+{
+ const struct property_info *pi;
+ gboolean ret;
+
+ *is_config = FALSE;
+ pi = bluez_get_property_info(access_type, error);
+ if (!pi)
+ return FALSE;
+
+ ret = root_property_dbus2json(jprop, pi, key, var, is_config);
+ if (!ret)
+ g_set_error(error, NB_ERROR, NB_ERROR_UNKNOWN_PROPERTY,
+ "unknown %s property %s",
+ access_type, key);
+
+ return ret;
+}
+
+
+void bluez_decode_call_error(struct bluetooth_state *ns,
+ const char *access_type, const char *type_arg,
+ const char *method,
+ GError **error)
+{
+ if (!error || !*error)
+ return;
+
+ if (strstr((*error)->message,
+ "org.freedesktop.DBus.Error.UnknownObject")) {
+
+ if (!strcmp(method, "Set") ||
+ !strcmp(method, "Get") ||
+ !strcmp(method, "GetAll")) {
+
+ g_clear_error(error);
+ g_set_error(error, NB_ERROR,
+ NB_ERROR_UNKNOWN_PROPERTY,
+ "unknown %s property on %s",
+ access_type, type_arg);
+
+ } else if (!strcmp(method, "Connect") ||
+ !strcmp(method, "ConnectProfile") ||
+ !strcmp(method, "Disconnect") ||
+ !strcmp(method, "DisconnectProfile") ||
+ !strcmp(method, "Pair") ||
+ !strcmp(method, "Unpair") ||
+ !strcmp(method, "RemoveDevice")) {
+
+ g_clear_error(error);
+ g_set_error(error, NB_ERROR,
+ NB_ERROR_UNKNOWN_SERVICE,
+ "unknown service %s",
+ type_arg);
+
+ } else if (!strcmp(method, "StartDiscovery") ||
+ !strcmp(method, "StopDiscovery") ||
+ !strcmp(method, "RegisterAgent")) {
+
+ g_clear_error(error);
+ g_set_error(error, NB_ERROR,
+ NB_ERROR_UNKNOWN_SERVICE,
+ "unknown service %s",
+ type_arg);
+ }
+ }
+}
+
+GVariant *bluez_call(struct bluetooth_state *ns,
+ const char *access_type, const char *path,
+ const char *method, GVariant *params, GError **error)
+{
+ const char *interface;
+ GVariant *reply;
+
+ if (!path && (!strcmp(access_type, BLUEZ_AT_DEVICE) ||
+ !strcmp(access_type, BLUEZ_AT_ADAPTER))) {
+ g_set_error(error, NB_ERROR, NB_ERROR_MISSING_ARGUMENT,
+ "missing %s argument",
+ access_type);
+ return NULL;
+ }
+
+ if (!strcmp(access_type, BLUEZ_AT_DEVICE)) {
+ interface = BLUEZ_DEVICE_INTERFACE;
+ } else if (!strcmp(access_type, BLUEZ_AT_ADAPTER)) {
+ interface = BLUEZ_ADAPTER_INTERFACE;
+ } else if (!strcmp(access_type, BLUEZ_AT_AGENTMANAGER)) {
+ path = BLUEZ_PATH;
+ interface = BLUEZ_AGENTMANAGER_INTERFACE;
+ } else {
+ g_set_error(error, NB_ERROR, NB_ERROR_ILLEGAL_ARGUMENT,
+ "illegal %s argument",
+ access_type);
+ return NULL;
+ }
+
+ reply = g_dbus_connection_call_sync(ns->conn,
+ BLUEZ_SERVICE, path, interface, method, params,
+ NULL, G_DBUS_CALL_FLAGS_NONE, DBUS_REPLY_TIMEOUT,
+ NULL, error);
+ bluez_decode_call_error(ns, access_type, path, method,
+ error);
+ if (!reply) {
+ if (error && *error)
+ g_dbus_error_strip_remote_error(*error);
+ AFB_ERROR("Error calling %s%s%s %s method %s",
+ access_type,
+ path ? "/" : "",
+ path ? path : "",
+ method,
+ error && *error ? (*error)->message :
+ "unspecified");
+ }
+
+ return reply;
+}
+
+static void bluez_call_async_ready(GObject *source_object,
+ GAsyncResult *res, gpointer user_data)
+{
+ struct bluez_pending_work *cpw = user_data;
+ struct bluetooth_state *ns = cpw->ns;
+ GVariant *result;
+ GError *error = NULL;
+
+ result = g_dbus_connection_call_finish(ns->conn, res, &error);
+
+ cpw->callback(cpw->user_data, result, &error);
+
+ g_clear_error(&error);
+ g_cancellable_reset(cpw->cancel);
+ g_free(cpw);
+}
+
+void bluez_cancel_call(struct bluetooth_state *ns,
+ struct bluez_pending_work *cpw)
+{
+ g_cancellable_cancel(cpw->cancel);
+}
+
+struct bluez_pending_work *
+bluez_call_async(struct bluetooth_state *ns,
+ const char *access_type, const char *type_arg,
+ const char *method, GVariant *params, GError **error,
+ void (*callback)(void *user_data, GVariant *result, GError **error),
+ void *user_data)
+{
+ const char *path;
+ const char *interface;
+ struct bluez_pending_work *cpw;
+
+ if (!type_arg && (!strcmp(access_type, BLUEZ_AT_DEVICE) ||
+ !strcmp(access_type, BLUEZ_AT_ADAPTER))) {
+ g_set_error(error, NB_ERROR, NB_ERROR_MISSING_ARGUMENT,
+ "missing %s argument",
+ access_type);
+ return NULL;
+ }
+
+ if (!strcmp(access_type, BLUEZ_AT_DEVICE)) {
+ path = type_arg;
+ interface = BLUEZ_DEVICE_INTERFACE;
+ } else if (!strcmp(access_type, BLUEZ_AT_ADAPTER)) {
+ path = type_arg;
+ interface = BLUEZ_ADAPTER_INTERFACE;
+ } else {
+ g_set_error(error, NB_ERROR, NB_ERROR_ILLEGAL_ARGUMENT,
+ "illegal %s argument",
+ access_type);
+ return NULL;
+ }
+
+ cpw = g_malloc(sizeof(*cpw));
+ if (!cpw) {
+ g_set_error(error, NB_ERROR, NB_ERROR_OUT_OF_MEMORY,
+ "out of memory");
+ return NULL;
+ }
+ cpw->ns = ns;
+ cpw->user_data = user_data;
+ cpw->cancel = g_cancellable_new();
+ if (!cpw->cancel) {
+ g_free(cpw);
+ g_set_error(error, NB_ERROR, NB_ERROR_OUT_OF_MEMORY,
+ "out of memory");
+ return NULL;
+ }
+ cpw->callback = callback;
+
+ g_dbus_connection_call(ns->conn,
+ BLUEZ_SERVICE, path, interface, method, params,
+ NULL, /* reply type */
+ G_DBUS_CALL_FLAGS_NONE, DBUS_REPLY_TIMEOUT,
+ cpw->cancel, /* cancellable? */
+ bluez_call_async_ready,
+ cpw);
+
+ return cpw;
+}
+
+json_object *bluez_get_properties(struct bluetooth_state *ns,
+ const char *access_type, const char *path,
+ GError **error)
+{
+ const struct property_info *pi = NULL;
+ const char *method = NULL;
+ GVariant *reply = NULL;
+ GVariantIter *array, *array2, *array3;
+ GVariant *var = NULL;
+ const char *interface, *interface2, *path2 = NULL;
+ const gchar *key = NULL;
+ json_object *jarray = NULL, *jarray2 = NULL;
+ json_object *jprop = NULL, *jresp = NULL, *jtype = NULL;
+ gboolean is_config;
+
+ if (!strcmp(access_type, BLUEZ_AT_DEVICE) ||
+ !strcmp(access_type, BLUEZ_AT_ADAPTER)) {
+
+ pi = bluez_get_property_info(access_type, error);
+ if (!pi)
+ return NULL;
+
+ interface = FREEDESKTOP_PROPERTIES;
+ method = "GetAll";
+ } else if (!strcmp(access_type, BLUEZ_AT_OBJECT)) {
+ interface = FREEDESKTOP_OBJECTMANAGER;
+ method = "GetManagedObjects";
+ } else {
+ return FALSE;
+ }
+
+ if (!strcmp(access_type, BLUEZ_AT_DEVICE))
+ interface2 = BLUEZ_DEVICE_INTERFACE;
+ else if (!strcmp(access_type, BLUEZ_AT_ADAPTER))
+ interface2 = BLUEZ_ADAPTER_INTERFACE;
+ else if (!strcmp(access_type, BLUEZ_AT_OBJECT))
+ interface2 = NULL;
+ else
+ return FALSE;
+
+ if (!method) {
+ g_set_error(error, NB_ERROR, NB_ERROR_ILLEGAL_ARGUMENT,
+ "illegal %s argument",
+ access_type);
+ return NULL;
+ }
+
+ reply = g_dbus_connection_call_sync(ns->conn,
+ BLUEZ_SERVICE, path, interface, method,
+ interface2 ? g_variant_new("(s)", interface2) : NULL,
+ NULL, G_DBUS_CALL_FLAGS_NONE, DBUS_REPLY_TIMEOUT,
+ NULL, error);
+
+ if (!reply)
+ return NULL;
+
+ if (!strcmp(access_type, BLUEZ_AT_DEVICE) ||
+ !strcmp(access_type, BLUEZ_AT_ADAPTER)) {
+ jprop = json_object_new_object();
+ g_variant_get(reply, "(a{sv})", &array);
+ while (g_variant_iter_loop(array, "{sv}", &key, &var)) {
+ root_property_dbus2json(jprop, pi,
+ key, var, &is_config);
+ }
+ g_variant_iter_free(array);
+ g_variant_unref(reply);
+ jresp = jprop;
+ } else if (!strcmp(access_type, BLUEZ_AT_OBJECT)) {
+
+ jarray = json_object_new_array();
+ jarray2 = json_object_new_array();
+
+ jresp = json_object_new_object();
+ json_object_object_add(jresp, "adapters", jarray);
+ json_object_object_add(jresp, "devices", jarray2);
+
+ g_variant_get(reply, "(a{oa{sa{sv}}})", &array);
+ while (g_variant_iter_loop(array, "{oa{sa{sv}}}", &path2, &array2)) {
+
+ while (g_variant_iter_loop(array2, "{&sa{sv}}", &interface, &array3)) {
+ json_object *array = NULL;
+
+ if (!strcmp(interface, BLUEZ_ADAPTER_INTERFACE)) {
+ access_type = BLUEZ_AT_ADAPTER;
+ array = jarray;
+ } else if (!strcmp(interface, BLUEZ_DEVICE_INTERFACE)) {
+ access_type = BLUEZ_AT_DEVICE;
+ array = jarray2;
+ } else {
+ continue; /* TODO: Maybe display other interfaces */
+ }
+
+ pi = bluez_get_property_info(access_type, error);
+ jtype = json_object_new_object();
+
+ json_object_object_add(jtype, "path",
+ json_object_new_string(path2));
+
+ while (g_variant_iter_loop(array3, "{sv}", &key, &var)) {
+ if (!jprop)
+ jprop = json_object_new_object();
+
+ root_property_dbus2json(jprop, pi,
+ key, var, &is_config);
+ }
+
+ json_object_object_add(jtype, "properties", jprop);
+ json_object_array_add(array, jtype);
+ jprop = NULL;
+ }
+
+ }
+
+ g_variant_iter_free(array);
+ g_variant_unref(reply);
+ }
+
+ if (!jresp) {
+ g_set_error(error, NB_ERROR, NB_ERROR_ILLEGAL_ARGUMENT,
+ "No %s", access_type);
+ }
+
+ return jresp;
+}
+
+json_object *bluez_get_property(struct bluetooth_state *ns,
+ const char *access_type, const char *path,
+ gboolean is_json_name, const char *name, GError **error)
+{
+ const struct property_info *pi;
+ json_object *jprop, *jval;
+
+ pi = bluez_get_property_info(access_type, error);
+ if (!pi)
+ return NULL;
+
+ jprop = bluez_get_properties(ns, access_type, path, error);
+ if (!jprop)
+ return NULL;
+
+ jval = get_named_property(pi, is_json_name, name, jprop);
+ json_object_put(jprop);
+
+ if (!jval)
+ g_set_error(error, NB_ERROR, NB_ERROR_BAD_PROPERTY,
+ "Bad property %s on %s%s%s", name,
+ access_type,
+ path ? "/" : "",
+ path ? path : "");
+ return jval;
+}
+
+/* NOTE: jval is consumed */
+gboolean bluez_set_property(struct bluetooth_state *ns,
+ const char *access_type, const char *path,
+ gboolean is_json_name, const char *name, json_object *jval,
+ GError **error)
+{
+ const struct property_info *pi;
+ GVariant *reply, *arg;
+ const char *interface;
+ gboolean is_config;
+ gchar *propname;
+
+ g_assert(path);
+
+ /* get start of properties */
+ pi = bluez_get_property_info(access_type, error);
+ if (!pi)
+ return FALSE;
+
+ /* get actual property */
+ pi = property_by_name(pi, is_json_name, name, &is_config);
+ if (!pi) {
+ g_set_error(error, NB_ERROR, NB_ERROR_UNKNOWN_PROPERTY,
+ "unknown property with name %s", name);
+ json_object_put(jval);
+ return FALSE;
+ }
+
+ /* convert to gvariant */
+ arg = property_json_to_gvariant(pi, NULL, NULL, jval, error);
+
+ /* we don't need this anymore */
+ json_object_put(jval);
+ jval = NULL;
+
+ /* no variant? error */
+ if (!arg)
+ return FALSE;
+
+ if (!is_config)
+ propname = g_strdup(pi->name);
+ else
+ propname = configuration_dbus_name(pi->name);
+
+ if (!strcmp(access_type, BLUEZ_AT_DEVICE))
+ interface = BLUEZ_DEVICE_INTERFACE;
+ else if (!strcmp(access_type, BLUEZ_AT_ADAPTER))
+ interface = BLUEZ_ADAPTER_INTERFACE;
+ else if (!strcmp(access_type, BLUEZ_AT_AGENT))
+ interface = BLUEZ_AGENT_INTERFACE;
+ else
+ return FALSE;
+
+ reply = g_dbus_connection_call_sync(ns->conn,
+ BLUEZ_SERVICE, path, FREEDESKTOP_PROPERTIES, "Set",
+ g_variant_new("(ssv)", interface, propname, arg),
+ NULL, G_DBUS_CALL_FLAGS_NONE, DBUS_REPLY_TIMEOUT,
+ NULL, error);
+
+ g_free(propname);
+
+ if (!reply)
+ return FALSE;
+
+ g_variant_unref(reply);
+
+ return TRUE;
+}