[PATCH BlueZ 1/3] Add SetRemoteProperties method for OOB COD setting

[Bartosz Szatkowski <bulislaw@linux.com>]

Add method for suppling class of device through OOB mechanism, to be
available at pairing phase. At this point it may be presented to the
user, by agent, in confirmation request (or whatever).
---
 doc/oob-api.txt   |   13 ++++
 plugins/dbusoob.c |  170 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 183 insertions(+), 0 deletions(-)

diff --git a/doc/oob-api.txt b/doc/oob-api.txt
index d838712..0324758 100644
--- a/doc/oob-api.txt
+++ b/doc/oob-api.txt
@@ -36,3 +36,16 @@ Methods		array{byte} hash, array{byte} randomizer ReadLocalData()
 
 			Possible errors: org.bluez.Error.Failed
 					 org.bluez.Error.InvalidArguments
+
+		void SetRemoteProperties(string address, dict data)
+
+			This method set new properties for device with specified
+			address, to be used when device is created.
+			On success DeviceFound signal will be emitted.
+
+			Currently supported keys:
+
+				Class		uint32
+
+			Possible errors: org.bluez.Error.Failed
+					 org.bluez.Error.InvalidArguments
diff --git a/plugins/dbusoob.c b/plugins/dbusoob.c
index 2c03780..ca0c635 100644
--- a/plugins/dbusoob.c
+++ b/plugins/dbusoob.c
@@ -43,6 +43,7 @@
 #include "event.h"
 #include "error.h"
 #include "oob.h"
+#include "storage.h"
 
 #define OOB_INTERFACE	"org.bluez.OutOfBand"
 
@@ -51,6 +52,13 @@ struct oob_request {
 	DBusMessage *msg;
 };
 
+struct oob_remote_parameters {
+	bdaddr_t local;
+	bdaddr_t peer;
+	const char *address;
+	uint32_t class;
+};
+
 static GSList *oob_requests = NULL;
 static DBusConnection *connection = NULL;
 
@@ -153,6 +161,167 @@ static DBusMessage *add_remote_data(DBusConnection *conn, DBusMessage *msg,
 	return g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
 }
 
+static void emit_device_found(const char *path,
+				struct oob_remote_parameters *params)
+{
+	DBusMessage *signal;
+	DBusMessageIter iter, dict;
+
+	signal = dbus_message_new_signal(path, ADAPTER_INTERFACE,
+								"DeviceFound");
+	if (signal == NULL) {
+		error("Unable to allocate new %s.DeviceFound signal",
+							ADAPTER_INTERFACE);
+		return;
+	}
+
+	dbus_message_iter_init_append(signal, &iter);
+	dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING,
+							&params->address);
+
+	dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY,
+			DBUS_DICT_ENTRY_BEGIN_CHAR_AS_STRING
+			DBUS_TYPE_STRING_AS_STRING DBUS_TYPE_VARIANT_AS_STRING
+			DBUS_DICT_ENTRY_END_CHAR_AS_STRING, &dict);
+
+	if (params->class != 0)
+		dict_append_entry(&dict, "Class", DBUS_TYPE_UINT32,
+							&params->class);
+
+	dbus_message_iter_close_container(&iter, &dict);
+
+	g_dbus_send_message(connection, signal);
+}
+
+static DBusMessage *parse_class(DBusMessageIter *value,
+			struct oob_remote_parameters *params, DBusMessage *msg)
+{
+	if (dbus_message_iter_get_arg_type(value) != DBUS_TYPE_UINT32)
+		return btd_error_invalid_args(msg);
+
+	dbus_message_iter_get_basic(value, &params->class);
+
+	return NULL;
+}
+
+static gboolean set_class(struct oob_remote_parameters *params)
+{
+	if (params->class == 0)
+		return FALSE;
+
+	if (write_remote_class(&params->local, &params->peer,
+							params->class) < 0) {
+		error("Setting device class failed");
+
+		return FALSE;
+	}
+
+	return TRUE;
+}
+
+static DBusMessage *parse_property(const char *property,
+				DBusMessageIter *value, DBusMessage *msg,
+				struct oob_remote_parameters *params)
+{
+	if (g_str_equal("Class", property))
+		return parse_class(value, params, msg);
+
+	return NULL;
+}
+
+static void set_properties(struct btd_adapter *adapter, DBusMessage *msg,
+				struct oob_remote_parameters *params)
+{
+	gboolean device_found = FALSE;
+
+	if (set_class(params))
+		device_found = TRUE;
+
+	if (device_found)
+		emit_device_found(adapter_get_path(adapter), params);
+}
+
+static DBusMessage *set_remote_properties(DBusConnection *conn,
+						DBusMessage *msg, void *data)
+{
+	struct btd_adapter *adapter = data;
+	DBusMessageIter iter_msg, iter_dict, iter_entry, iter_variant;
+	struct oob_remote_parameters *params;
+	char *addr;
+	DBusMessage *result;
+
+	if (!dbus_message_iter_init(msg, &iter_msg))
+		return btd_error_invalid_args(msg);
+
+	if (dbus_message_iter_get_arg_type(&iter_msg) != DBUS_TYPE_STRING)
+		return btd_error_invalid_args(msg);
+
+	dbus_message_iter_get_basic(&iter_msg, &addr);
+
+	if (bachk(addr))
+		return btd_error_invalid_args(msg);
+
+	dbus_message_iter_get_basic(&iter_msg, &addr);
+	dbus_message_iter_next(&iter_msg);
+
+	if (dbus_message_iter_get_arg_type(&iter_msg) != DBUS_TYPE_ARRAY)
+		return btd_error_invalid_args(msg);
+
+	params = g_new0(struct oob_remote_parameters, 1);
+
+	params->address = addr;
+	adapter_get_address(adapter, &params->local);
+	str2ba(addr, &params->peer);
+
+	dbus_message_iter_recurse(&iter_msg, &iter_dict);
+
+	for (; dbus_message_iter_get_arg_type(&iter_dict) != DBUS_TYPE_INVALID;
+					dbus_message_iter_next(&iter_dict)) {
+		char *property;
+
+		if (dbus_message_iter_get_arg_type(&iter_dict) !=
+							DBUS_TYPE_DICT_ENTRY) {
+			result = btd_error_invalid_args(msg);
+
+			goto done;
+		}
+
+		dbus_message_iter_recurse(&iter_dict, &iter_entry);
+
+		if (dbus_message_iter_get_arg_type(&iter_entry) !=
+							DBUS_TYPE_STRING) {
+			result = btd_error_invalid_args(msg);
+
+			goto done;
+		}
+
+		dbus_message_iter_get_basic(&iter_entry, &property);
+		dbus_message_iter_next(&iter_entry);
+
+		if (dbus_message_iter_get_arg_type(&iter_entry) !=
+							DBUS_TYPE_VARIANT) {
+			result = btd_error_invalid_args(msg);
+
+			goto done;
+		}
+
+		dbus_message_iter_recurse(&iter_entry, &iter_variant);
+
+		result = parse_property(property, &iter_variant, msg, params);
+		if (result != NULL)
+			goto done;
+	}
+
+	set_properties(adapter, msg, params);
+
+	result = g_dbus_create_reply(msg, DBUS_TYPE_INVALID);
+
+done:
+	g_free(params);
+
+	return result;
+}
+
 static DBusMessage *remove_remote_data(DBusConnection *conn, DBusMessage *msg,
 								void *data)
 {
@@ -177,6 +346,7 @@ static DBusMessage *remove_remote_data(DBusConnection *conn, DBusMessage *msg,
 
 static GDBusMethodTable oob_methods[] = {
 	{"AddRemoteData",	"sayay",	"",	add_remote_data},
+	{"SetRemoteProperties",	"sa{sv}",	"",	set_remote_properties},
 	{"RemoveRemoteData",	"s",		"",	remove_remote_data},
 	{"ReadLocalData",	"",		"ayay",	read_local_data,
 						G_DBUS_METHOD_FLAG_ASYNC},
-- 
1.7.4.1