src: add gnss atom and agent implementation

1 files changed, 386 insertions, 0 deletions

diff --git a/src/gnss.c b/src/gnss.c
new file mode 100644
index 00000000..e0c17e6a
--- /dev/null
+++ b/src/gnss.c
@@ -0,0 +1,386 @@
+/*
+ *
+ *  oFono - Open Source Telephony
+ *
+ *  Copyright (C) 2008-2010  Intel Corporation. All rights reserved.
+ *  Copyright (C) 2011 ST-Ericsson AB.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 as
+ *  published by the Free Software Foundation.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#define _GNU_SOURCE
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+
+#include <glib.h>
+#include <gdbus.h>
+#include <errno.h>
+
+#include "ofono.h"
+
+#include "common.h"
+#include "gnssagent.h"
+
+static GSList *g_drivers = NULL;
+
+struct ofono_gnss {
+	const struct ofono_gnss_driver *driver;
+	void *driver_data;
+	struct ofono_atom *atom;
+	DBusMessage *pending;
+	struct gnss_agent *posr_agent;
+	ofono_bool_t enabled;
+};
+
+static void gnss_unregister_agent_cb(const struct ofono_error *error,
+					void *data)
+{
+	DBusMessage *reply;
+	struct ofono_gnss *gnss = data;
+
+	DBG("");
+
+	if (error->type != OFONO_ERROR_TYPE_NO_ERROR) {
+		ofono_error("Disabling Location Reporting Failed");
+		reply = __ofono_error_failed(gnss->pending);
+		__ofono_dbus_pending_reply(&gnss->pending, reply);
+		return;
+	}
+
+	gnss->enabled = FALSE;
+
+	if (gnss->posr_agent)
+		gnss_agent_free(gnss->posr_agent);
+
+	if (gnss->posr_agent) {
+		ofono_error("Releasing agent failed");
+		reply = __ofono_error_failed(gnss->pending);
+		__ofono_dbus_pending_reply(&gnss->pending, reply);
+		return;
+	}
+
+	if (gnss->pending) {
+		reply = dbus_message_new_method_return(gnss->pending);
+		__ofono_dbus_pending_reply(&gnss->pending, reply);
+	}
+}
+
+static void gnss_register_agent_cb(const struct ofono_error *error,
+					void *data)
+{
+	DBusMessage *reply;
+	struct ofono_gnss *gnss = data;
+
+	DBG("");
+
+	if (error->type != OFONO_ERROR_TYPE_NO_ERROR) {
+		ofono_error("Enabling Location Reporting Failed");
+		reply = __ofono_error_failed(gnss->pending);
+
+		if (gnss->posr_agent)
+			gnss_agent_free(gnss->posr_agent);
+
+		__ofono_dbus_pending_reply(&gnss->pending, reply);
+		return;
+	}
+
+	if (gnss->posr_agent) {
+		gnss->enabled = TRUE;
+		reply = dbus_message_new_method_return(gnss->pending);
+		__ofono_dbus_pending_reply(&gnss->pending, reply);
+	} else
+		gnss->driver->set_position_reporting(gnss, FALSE,
+						gnss_unregister_agent_cb,
+						gnss);
+}
+
+static void gnss_agent_notify(gpointer user_data)
+{
+	struct ofono_gnss *gnss = user_data;
+
+	if (gnss->enabled)
+		gnss->driver->set_position_reporting(gnss, FALSE,
+						gnss_unregister_agent_cb,
+						gnss);
+
+	gnss->posr_agent = NULL;
+}
+
+static DBusMessage *gnss_register_agent(DBusConnection *conn,
+					DBusMessage *msg, void *data)
+{
+	struct ofono_gnss *gnss = data;
+	const char *agent_path;
+
+	if (gnss->pending)
+		return __ofono_error_busy(msg);
+
+	if (gnss->posr_agent)
+		return __ofono_error_busy(msg);
+
+	if (dbus_message_get_args(msg, NULL, DBUS_TYPE_OBJECT_PATH,
+				&agent_path, DBUS_TYPE_INVALID) == FALSE)
+		return __ofono_error_invalid_args(msg);
+
+	if (!__ofono_dbus_valid_object_path(agent_path))
+		return __ofono_error_invalid_format(msg);
+
+	gnss->posr_agent = gnss_agent_new(agent_path,
+					dbus_message_get_sender(msg),
+					FALSE);
+
+	if (gnss->posr_agent == NULL)
+		return __ofono_error_failed(msg);
+
+	gnss->enabled = FALSE;
+
+	gnss_agent_set_removed_notify(gnss->posr_agent,
+					gnss_agent_notify, gnss);
+
+	gnss->driver->set_position_reporting(gnss, TRUE, gnss_register_agent_cb,
+						gnss);
+
+	gnss->pending = dbus_message_ref(msg);
+
+	return NULL;
+}
+
+static DBusMessage *gnss_unregister_agent(DBusConnection *conn,
+						DBusMessage *msg, void *data)
+{
+	struct ofono_gnss *gnss = data;
+	const char *agent_path;
+	const char *agent_bus = dbus_message_get_sender(msg);
+
+	if (gnss->pending)
+		return __ofono_error_busy(msg);
+
+	if (dbus_message_get_args(msg, NULL,
+					DBUS_TYPE_OBJECT_PATH, &agent_path,
+					DBUS_TYPE_INVALID) == FALSE)
+		return __ofono_error_invalid_args(msg);
+
+	if (gnss->posr_agent == NULL)
+		return __ofono_error_failed(msg);
+
+	if (!gnss_agent_matches(gnss->posr_agent, agent_path, agent_bus))
+		return __ofono_error_failed(msg);
+
+	gnss->pending = dbus_message_ref(msg);
+
+	gnss->driver->set_position_reporting(gnss, FALSE,
+						gnss_unregister_agent_cb,
+						gnss);
+
+	return NULL;
+}
+
+static void gnss_send_element_cb(const struct ofono_error *error,
+				void *data)
+{
+	DBusMessage *reply;
+	struct ofono_gnss *gnss = data;
+
+	DBG("");
+
+	if (error->type != OFONO_ERROR_TYPE_NO_ERROR) {
+		ofono_error("Sending Positioning Element failed");
+
+		reply = __ofono_error_failed(gnss->pending);
+
+		goto out;
+	}
+
+	reply = dbus_message_new_method_return(gnss->pending);
+
+out:
+	__ofono_dbus_pending_reply(&gnss->pending, reply);
+}
+
+static DBusMessage *gnss_send_element(DBusConnection *conn,
+					DBusMessage *msg, void *data)
+{
+	const char *caller = dbus_message_get_sender(msg);
+	struct ofono_gnss *gnss = data;
+	const char *xml;
+
+	DBG("");
+
+	if (gnss->pending)
+		return __ofono_error_busy(msg);
+
+	if (!dbus_message_get_args(msg, NULL, DBUS_TYPE_STRING, &xml,
+					DBUS_TYPE_INVALID))
+		return __ofono_error_invalid_args(msg);
+
+	if (!gnss_agent_sender_matches(gnss->posr_agent, caller))
+		return __ofono_error_access_denied(msg);
+
+	gnss->pending = dbus_message_ref(msg);
+
+	gnss->driver->send_element(gnss, xml, gnss_send_element_cb, gnss);
+
+	return NULL;
+}
+
+static GDBusMethodTable gnss_methods[] = {
+	{ "SendPositioningElement",		"s",	"",
+				gnss_send_element, G_DBUS_METHOD_FLAG_ASYNC },
+	{ "RegisterPositioningRequestAgent",	"o",	"",
+				gnss_register_agent,
+				G_DBUS_METHOD_FLAG_ASYNC },
+	{ "UnregisterPositioningRequestAgent",	"o",	"",
+				gnss_unregister_agent,
+				G_DBUS_METHOD_FLAG_ASYNC },
+	{ }
+};
+
+static void gnss_unregister(struct ofono_atom *atom)
+{
+	struct ofono_gnss *gnss = __ofono_atom_get_data(atom);
+	DBusConnection *conn = ofono_dbus_get_connection();
+	struct ofono_modem *modem = __ofono_atom_get_modem(atom);
+	const char *path = __ofono_atom_get_path(atom);
+
+	if (gnss->posr_agent)
+		gnss_agent_free(gnss->posr_agent);
+
+	ofono_modem_remove_interface(modem, OFONO_GNSS_INTERFACE);
+	g_dbus_unregister_interface(conn, path, OFONO_GNSS_INTERFACE);
+}
+
+static void gnss_remove(struct ofono_atom *atom)
+{
+	struct ofono_gnss *gnss = __ofono_atom_get_data(atom);
+
+	DBG("atom: %p", atom);
+
+	if (gnss == NULL)
+		return;
+
+	if (gnss->driver && gnss->driver->remove)
+		gnss->driver->remove(gnss);
+
+	g_free(gnss);
+}
+
+void ofono_gnss_register(struct ofono_gnss *gnss)
+{
+	DBusConnection *conn = ofono_dbus_get_connection();
+	struct ofono_modem *modem = __ofono_atom_get_modem(gnss->atom);
+	const char *path = __ofono_atom_get_path(gnss->atom);
+
+	if (!g_dbus_register_interface(conn, path,
+					OFONO_GNSS_INTERFACE,
+					gnss_methods, NULL, NULL,
+					gnss, NULL)) {
+		ofono_error("Could not create %s interface",
+				OFONO_GNSS_INTERFACE);
+
+		return;
+	}
+
+	ofono_modem_add_interface(modem, OFONO_GNSS_INTERFACE);
+
+	__ofono_atom_register(gnss->atom, gnss_unregister);
+}
+
+int ofono_gnss_driver_register(const struct ofono_gnss_driver *d)
+{
+	DBG("driver: %p, name: %s", d, d->name);
+
+	if (d->probe == NULL)
+		return -EINVAL;
+
+	g_drivers = g_slist_prepend(g_drivers, (void *) d);
+
+	return 0;
+}
+
+void ofono_gnss_driver_unregister(const struct ofono_gnss_driver *d)
+{
+	DBG("driver: %p, name: %s", d, d->name);
+
+	g_drivers = g_slist_remove(g_drivers, (void *) d);
+}
+
+struct ofono_gnss *ofono_gnss_create(struct ofono_modem *modem,
+					unsigned int vendor,
+					const char *driver,
+					void *data)
+{
+	struct ofono_gnss *gnss;
+	GSList *l;
+
+	if (driver == NULL)
+		return NULL;
+
+	gnss = g_try_new0(struct ofono_gnss, 1);
+
+	if (gnss == NULL)
+		return NULL;
+
+	gnss->enabled = FALSE;
+	gnss->atom = __ofono_modem_add_atom(modem, OFONO_ATOM_TYPE_GNSS,
+						gnss_remove, gnss);
+
+	for (l = g_drivers; l; l = l->next) {
+		const struct ofono_gnss_driver *drv = l->data;
+
+		if (g_strcmp0(drv->name, driver))
+			continue;
+
+		if (drv->probe(gnss, vendor, data) < 0)
+			continue;
+
+		gnss->driver = drv;
+		break;
+	}
+
+	return gnss;
+}
+
+void ofono_gnss_notify_posr_request(struct ofono_gnss *gnss, const char *xml)
+{
+	if (gnss->posr_agent)
+		gnss_agent_receive_request(gnss->posr_agent, xml);
+}
+
+void ofono_gnss_notify_posr_reset(struct ofono_gnss *gnss)
+{
+	if (gnss->posr_agent)
+		gnss_agent_receive_reset(gnss->posr_agent);
+}
+
+void ofono_gnss_remove(struct ofono_gnss *gnss)
+{
+	__ofono_atom_free(gnss->atom);
+}
+
+void ofono_gnss_set_data(struct ofono_gnss *gnss, void *data)
+{
+	gnss->driver_data = data;
+}
+
+void *ofono_gnss_get_data(struct ofono_gnss *gnss)
+{
+	return gnss->driver_data;
+}