--- /dev/null
+/*
+ * WPA Supplicant / dbus-based control interface
+ * Copyright (c) 2006, Dan Williams <dcbw@redhat.com> and Red Hat, Inc.
+ * Copyright (c) 2009, Witold Sowa <witold.sowa@gmail.com>
+ *
+ * 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.
+ *
+ * Alternatively, this software may be distributed under the terms of BSD
+ * license.
+ *
+ * See README and COPYING for more details.
+ */
+
+#include "utils/includes.h"
+
+#include "utils/common.h"
+#include "utils/eloop.h"
+#include "dbus_common.h"
+#include "dbus_common_i.h"
+#include "dbus_new.h"
+#include "dbus_new_helpers.h"
+
+
+/**
+ * recursive_iter_copy - Reads arguments from one iterator and
+ * writes to another recursively
+ * @from: iterator to read from
+ * @to: iterator to write to
+ *
+ * Copies one iterator's elements to another. If any element in
+ * iterator is of container type, its content is copied recursively
+ */
+static void recursive_iter_copy(DBusMessageIter *from, DBusMessageIter *to)
+{
+
+ char *subtype = NULL;
+ int type;
+
+ /* iterate over iterator to copy */
+ while ((type = dbus_message_iter_get_arg_type(from)) !=
+ DBUS_TYPE_INVALID) {
+
+ /* simply copy basic type entries */
+ if (dbus_type_is_basic(type)) {
+ if (dbus_type_is_fixed(type)) {
+ /*
+ * According to DBus documentation all
+ * fixed-length types are guaranteed to fit
+ * 8 bytes
+ */
+ dbus_uint64_t v;
+ dbus_message_iter_get_basic(from, &v);
+ dbus_message_iter_append_basic(to, type, &v);
+ } else {
+ char *v;
+ dbus_message_iter_get_basic(from, &v);
+ dbus_message_iter_append_basic(to, type, &v);
+ }
+ } else {
+ /* recursively copy container type entries */
+ DBusMessageIter write_subiter, read_subiter;
+
+ dbus_message_iter_recurse(from, &read_subiter);
+
+ if (type == DBUS_TYPE_VARIANT ||
+ type == DBUS_TYPE_ARRAY) {
+ subtype = dbus_message_iter_get_signature(
+ &read_subiter);
+ }
+
+ dbus_message_iter_open_container(to, type, subtype,
+ &write_subiter);
+
+ recursive_iter_copy(&read_subiter, &write_subiter);
+
+ dbus_message_iter_close_container(to, &write_subiter);
+ if (subtype)
+ dbus_free(subtype);
+ }
+
+ dbus_message_iter_next(from);
+ }
+}
+
+
+static unsigned int fill_dict_with_properties(
+ DBusMessageIter *dict_iter, const struct wpa_dbus_property_desc *props,
+ const char *interface, const void *user_data)
+{
+ DBusMessage *reply;
+ DBusMessageIter entry_iter, ret_iter;
+ unsigned int counter = 0;
+ const struct wpa_dbus_property_desc *dsc;
+
+ for (dsc = props; dsc && dsc->dbus_property; dsc++) {
+ if (!os_strncmp(dsc->dbus_interface, interface,
+ WPAS_DBUS_INTERFACE_MAX) &&
+ dsc->access != W && dsc->getter) {
+ reply = dsc->getter(NULL, user_data);
+ if (!reply)
+ continue;
+
+ if (dbus_message_get_type(reply) ==
+ DBUS_MESSAGE_TYPE_ERROR) {
+ dbus_message_unref(reply);
+ continue;
+ }
+
+ dbus_message_iter_init(reply, &ret_iter);
+
+ dbus_message_iter_open_container(dict_iter,
+ DBUS_TYPE_DICT_ENTRY,
+ NULL, &entry_iter);
+ dbus_message_iter_append_basic(
+ &entry_iter, DBUS_TYPE_STRING,
+ &dsc->dbus_property);
+
+ recursive_iter_copy(&ret_iter, &entry_iter);
+
+ dbus_message_iter_close_container(dict_iter,
+ &entry_iter);
+ dbus_message_unref(reply);
+ counter++;
+ }
+ }
+
+ return counter;
+}
+
+
+/**
+ * get_all_properties - Responds for GetAll properties calls on object
+ * @message: Message with GetAll call
+ * @interface: interface name which properties will be returned
+ * @property_dsc: list of object's properties
+ * Returns: Message with dict of variants as argument with properties values
+ *
+ * Iterates over all properties registered with object and execute getters
+ * of those, which are readable and which interface matches interface
+ * specified as argument. Returned message contains one dict argument
+ * with properties names as keys and theirs values as values.
+ */
+static DBusMessage * get_all_properties(
+ DBusMessage *message, char *interface,
+ struct wpa_dbus_object_desc *obj_dsc)
+{
+ /* Create and initialize the return message */
+ DBusMessage *reply = dbus_message_new_method_return(message);
+ DBusMessageIter iter, dict_iter;
+ int props_num;
+
+ dbus_message_iter_init_append(reply, &iter);
+
+ 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_iter);
+
+ props_num = fill_dict_with_properties(&dict_iter, obj_dsc->properties,
+ interface, obj_dsc->user_data);
+
+ dbus_message_iter_close_container(&iter, &dict_iter);
+
+ if (props_num == 0) {
+ dbus_message_unref(reply);
+ reply = dbus_message_new_error(message,
+ DBUS_ERROR_INVALID_ARGS,
+ "No readable properties in "
+ "this interface");
+ }
+
+ return reply;
+}
+
+
+static int is_signature_correct(DBusMessage *message,
+ const struct wpa_dbus_method_desc *method_dsc)
+{
+ /* According to DBus documentation max length of signature is 255 */
+#define MAX_SIG_LEN 256
+ char registered_sig[MAX_SIG_LEN], *pos;
+ const char *sig = dbus_message_get_signature(message);
+ int ret;
+ const struct wpa_dbus_argument *arg;
+
+ pos = registered_sig;
+ *pos = '\0';
+
+ for (arg = method_dsc->args; arg && arg->name; arg++) {
+ if (arg->dir == ARG_IN) {
+ size_t blen = registered_sig + MAX_SIG_LEN - pos;
+ ret = os_snprintf(pos, blen, "%s", arg->type);
+ if (ret < 0 || (size_t) ret >= blen)
+ return 0;
+ pos += ret;
+ }
+ }
+
+ return !os_strncmp(registered_sig, sig, MAX_SIG_LEN);
+}
+
+
+static DBusMessage * properties_get_all(DBusMessage *message, char *interface,
+ struct wpa_dbus_object_desc *obj_dsc)
+{
+ if (os_strcmp(dbus_message_get_signature(message), "s") != 0)
+ return dbus_message_new_error(message, DBUS_ERROR_INVALID_ARGS,
+ NULL);
+
+ return get_all_properties(message, interface, obj_dsc);
+}
+
+
+static DBusMessage * properties_get(DBusMessage *message,
+ const struct wpa_dbus_property_desc *dsc,
+ void *user_data)
+{
+ if (os_strcmp(dbus_message_get_signature(message), "ss"))
+ return dbus_message_new_error(message, DBUS_ERROR_INVALID_ARGS,
+ NULL);
+
+ if (dsc->access != W && dsc->getter)
+ return dsc->getter(message, user_data);
+
+ return dbus_message_new_error(message, DBUS_ERROR_INVALID_ARGS,
+ "Property is write-only");
+}
+
+
+static DBusMessage * properties_set(DBusMessage *message,
+ const struct wpa_dbus_property_desc *dsc,
+ void *user_data)
+{
+ if (os_strcmp(dbus_message_get_signature(message), "ssv"))
+ return dbus_message_new_error(message, DBUS_ERROR_INVALID_ARGS,
+ NULL);
+
+ if (dsc->access != R && dsc->setter)
+ return dsc->setter(message, user_data);
+
+ return dbus_message_new_error(message, DBUS_ERROR_INVALID_ARGS,
+ "Property is read-only");
+}
+
+
+static DBusMessage *
+properties_get_or_set(DBusMessage *message, DBusMessageIter *iter,
+ char *interface,
+ struct wpa_dbus_object_desc *obj_dsc)
+{
+ const struct wpa_dbus_property_desc *property_dsc;
+ char *property;
+ const char *method;
+
+ method = dbus_message_get_member(message);
+ property_dsc = obj_dsc->properties;
+
+ /* Second argument: property name (DBUS_TYPE_STRING) */
+ if (!dbus_message_iter_next(iter) ||
+ dbus_message_iter_get_arg_type(iter) != DBUS_TYPE_STRING) {
+ return dbus_message_new_error(message, DBUS_ERROR_INVALID_ARGS,
+ NULL);
+ }
+ dbus_message_iter_get_basic(iter, &property);
+
+ while (property_dsc && property_dsc->dbus_property) {
+ /* compare property names and
+ * interfaces */
+ if (!os_strncmp(property_dsc->dbus_property, property,
+ WPAS_DBUS_METHOD_SIGNAL_PROP_MAX) &&
+ !os_strncmp(property_dsc->dbus_interface, interface,
+ WPAS_DBUS_INTERFACE_MAX))
+ break;
+
+ property_dsc++;
+ }
+ if (property_dsc == NULL || property_dsc->dbus_property == NULL) {
+ wpa_printf(MSG_DEBUG, "no property handler for %s.%s on %s",
+ interface, property,
+ dbus_message_get_path(message));
+ return dbus_message_new_error(message, DBUS_ERROR_INVALID_ARGS,
+ "No such property");
+ }
+
+ if (os_strncmp(WPA_DBUS_PROPERTIES_GET, method,
+ WPAS_DBUS_METHOD_SIGNAL_PROP_MAX) == 0)
+ return properties_get(message, property_dsc,
+ obj_dsc->user_data);
+
+ return properties_set(message, property_dsc, obj_dsc->user_data);
+}
+
+
+static DBusMessage * properties_handler(DBusMessage *message,
+ struct wpa_dbus_object_desc *obj_dsc)
+{
+ DBusMessageIter iter;
+ char *interface;
+ const char *method;
+
+ method = dbus_message_get_member(message);
+ dbus_message_iter_init(message, &iter);
+
+ if (!os_strncmp(WPA_DBUS_PROPERTIES_GET, method,
+ WPAS_DBUS_METHOD_SIGNAL_PROP_MAX) ||
+ !os_strncmp(WPA_DBUS_PROPERTIES_SET, method,
+ WPAS_DBUS_METHOD_SIGNAL_PROP_MAX) ||
+ !os_strncmp(WPA_DBUS_PROPERTIES_GETALL, method,
+ WPAS_DBUS_METHOD_SIGNAL_PROP_MAX)) {
+ /* First argument: interface name (DBUS_TYPE_STRING) */
+ if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
+ {
+ return dbus_message_new_error(message,
+ DBUS_ERROR_INVALID_ARGS,
+ NULL);
+ }
+
+ dbus_message_iter_get_basic(&iter, &interface);
+
+ if (!os_strncmp(WPA_DBUS_PROPERTIES_GETALL, method,
+ WPAS_DBUS_METHOD_SIGNAL_PROP_MAX)) {
+ /* GetAll */
+ return properties_get_all(message, interface, obj_dsc);
+ }
+ /* Get or Set */
+ return properties_get_or_set(message, &iter, interface,
+ obj_dsc);
+ }
+ return dbus_message_new_error(message, DBUS_ERROR_UNKNOWN_METHOD,
+ NULL);
+}
+
+
+static DBusMessage * msg_method_handler(DBusMessage *message,
+ struct wpa_dbus_object_desc *obj_dsc)
+{
+ const struct wpa_dbus_method_desc *method_dsc = obj_dsc->methods;
+ const char *method;
+ const char *msg_interface;
+
+ method = dbus_message_get_member(message);
+ msg_interface = dbus_message_get_interface(message);
+
+ /* try match call to any registered method */
+ while (method_dsc && method_dsc->dbus_method) {
+ /* compare method names and interfaces */
+ if (!os_strncmp(method_dsc->dbus_method, method,
+ WPAS_DBUS_METHOD_SIGNAL_PROP_MAX) &&
+ !os_strncmp(method_dsc->dbus_interface, msg_interface,
+ WPAS_DBUS_INTERFACE_MAX))
+ break;
+
+ method_dsc++;
+ }
+ if (method_dsc == NULL || method_dsc->dbus_method == NULL) {
+ wpa_printf(MSG_DEBUG, "no method handler for %s.%s on %s",
+ msg_interface, method,
+ dbus_message_get_path(message));
+ return dbus_message_new_error(message,
+ DBUS_ERROR_UNKNOWN_METHOD, NULL);
+ }
+
+ if (!is_signature_correct(message, method_dsc)) {
+ return dbus_message_new_error(message, DBUS_ERROR_INVALID_ARGS,
+ NULL);
+ }
+
+ return method_dsc->method_handler(message,
+ obj_dsc->user_data);
+}
+
+
+/**
+ * message_handler - Handles incoming DBus messages
+ * @connection: DBus connection on which message was received
+ * @message: Received message
+ * @user_data: pointer to description of object to which message was sent
+ * Returns: Returns information whether message was handled or not
+ *
+ * Reads message interface and method name, then checks if they matches one
+ * of the special cases i.e. introspection call or properties get/getall/set
+ * methods and handles it. Else it iterates over registered methods list
+ * and tries to match method's name and interface to those read from message
+ * If appropriate method was found its handler function is called and
+ * response is sent. Otherwise, the DBUS_ERROR_UNKNOWN_METHOD error message
+ * will be sent.
+ */
+static DBusHandlerResult message_handler(DBusConnection *connection,
+ DBusMessage *message, void *user_data)
+{
+ struct wpa_dbus_object_desc *obj_dsc = user_data;
+ const char *method;
+ const char *path;
+ const char *msg_interface;
+ DBusMessage *reply;
+
+ /* get method, interface and path the message is addressed to */
+ method = dbus_message_get_member(message);
+ path = dbus_message_get_path(message);
+ msg_interface = dbus_message_get_interface(message);
+ if (!method || !path || !msg_interface)
+ return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
+
+ wpa_printf(MSG_MSGDUMP, "dbus: %s.%s (%s)",
+ msg_interface, method, path);
+
+ /* if message is introspection method call */
+ if (!os_strncmp(WPA_DBUS_INTROSPECTION_METHOD, method,
+ WPAS_DBUS_METHOD_SIGNAL_PROP_MAX) &&
+ !os_strncmp(WPA_DBUS_INTROSPECTION_INTERFACE, msg_interface,
+ WPAS_DBUS_INTERFACE_MAX)) {
+#ifdef CONFIG_CTRL_IFACE_DBUS_INTRO
+ reply = wpa_dbus_introspect(message, obj_dsc);
+#else /* CONFIG_CTRL_IFACE_DBUS_INTRO */
+ reply = dbus_message_new_error(
+ message, DBUS_ERROR_UNKNOWN_METHOD,
+ "wpa_supplicant was compiled without "
+ "introspection support.");
+#endif /* CONFIG_CTRL_IFACE_DBUS_INTRO */
+ } else if (!os_strncmp(WPA_DBUS_PROPERTIES_INTERFACE, msg_interface,
+ WPAS_DBUS_INTERFACE_MAX)) {
+ /* if message is properties method call */
+ reply = properties_handler(message, obj_dsc);
+ } else {
+ reply = msg_method_handler(message, obj_dsc);
+ }
+
+ /* If handler succeed returning NULL, reply empty message */
+ if (!reply)
+ reply = dbus_message_new_method_return(message);
+ if (reply) {
+ if (!dbus_message_get_no_reply(message))
+ dbus_connection_send(connection, reply, NULL);
+ dbus_message_unref(reply);
+ }
+
+ wpa_dbus_flush_all_changed_properties(connection);
+
+ return DBUS_HANDLER_RESULT_HANDLED;
+}
+
+
+/**
+ * free_dbus_object_desc - Frees object description data structure
+ * @connection: DBus connection
+ * @obj_dsc: Object description to free
+ *
+ * Frees each of properties, methods and signals description lists and
+ * the object description structure itself.
+ */
+void free_dbus_object_desc(struct wpa_dbus_object_desc *obj_dsc)
+{
+ if (!obj_dsc)
+ return;
+
+ /* free handler's argument */
+ if (obj_dsc->user_data_free_func)
+ obj_dsc->user_data_free_func(obj_dsc->user_data);
+
+ os_free(obj_dsc->path);
+ os_free(obj_dsc->prop_changed_flags);
+ os_free(obj_dsc);
+}
+
+
+static void free_dbus_object_desc_cb(DBusConnection *connection, void *obj_dsc)
+{
+ free_dbus_object_desc(obj_dsc);
+}
+
+/**
+ * wpa_dbus_ctrl_iface_init - Initialize dbus control interface
+ * @application_data: Pointer to application specific data structure
+ * @dbus_path: DBus path to interface object
+ * @dbus_service: DBus service name to register with
+ * @messageHandler: a pointer to function which will handle dbus messages
+ * coming on interface
+ * Returns: 0 on success, -1 on failure
+ *
+ * Initialize the dbus control interface and start receiving commands from
+ * external programs over the bus.
+ */
+int wpa_dbus_ctrl_iface_init(struct wpas_dbus_priv *iface,
+ char *dbus_path, char *dbus_service,
+ struct wpa_dbus_object_desc *obj_desc)
+{
+ DBusError error;
+ int ret = -1;
+ DBusObjectPathVTable wpa_vtable = {
+ &free_dbus_object_desc_cb, &message_handler,
+ NULL, NULL, NULL, NULL
+ };
+
+ obj_desc->connection = iface->con;
+ obj_desc->path = os_strdup(dbus_path);
+
+ /* Register the message handler for the global dbus interface */
+ if (!dbus_connection_register_object_path(iface->con,
+ dbus_path, &wpa_vtable,
+ obj_desc)) {
+ wpa_printf(MSG_ERROR, "dbus: Could not set up message "
+ "handler");
+ return -1;
+ }
+
+ /* Register our service with the message bus */
+ dbus_error_init(&error);
+ switch (dbus_bus_request_name(iface->con, dbus_service,
+ 0, &error)) {
+ case DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER:
+ ret = 0;
+ break;
+ case DBUS_REQUEST_NAME_REPLY_EXISTS:
+ case DBUS_REQUEST_NAME_REPLY_IN_QUEUE:
+ case DBUS_REQUEST_NAME_REPLY_ALREADY_OWNER:
+ wpa_printf(MSG_ERROR, "dbus: Could not request service name: "
+ "already registered");
+ break;
+ default:
+ wpa_printf(MSG_ERROR, "dbus: Could not request service name: "
+ "%s %s", error.name, error.message);
+ break;
+ }
+ dbus_error_free(&error);
+
+ if (ret != 0)
+ return -1;
+
+ wpa_printf(MSG_DEBUG, "Providing DBus service '%s'.", dbus_service);
+
+ return 0;
+}
+
+
+/**
+ * wpa_dbus_register_object_per_iface - Register a new object with dbus
+ * @ctrl_iface: pointer to dbus private data
+ * @path: DBus path to object
+ * @ifname: interface name
+ * @obj_desc: description of object's methods, signals and properties
+ * Returns: 0 on success, -1 on error
+ *
+ * Registers a new interface with dbus and assigns it a dbus object path.
+ */
+int wpa_dbus_register_object_per_iface(
+ struct wpas_dbus_priv *ctrl_iface,
+ const char *path, const char *ifname,
+ struct wpa_dbus_object_desc *obj_desc)
+{
+ DBusConnection *con;
+
+ DBusObjectPathVTable vtable = {
+ &free_dbus_object_desc_cb, &message_handler,
+ NULL, NULL, NULL, NULL
+ };
+
+ /* Do nothing if the control interface is not turned on */
+ if (ctrl_iface == NULL)
+ return 0;
+
+ con = ctrl_iface->con;
+ obj_desc->connection = con;
+ obj_desc->path = os_strdup(path);
+
+ /* Register the message handler for the interface functions */
+ if (!dbus_connection_register_object_path(con, path, &vtable,
+ obj_desc)) {
+ wpa_printf(MSG_ERROR, "dbus: Could not set up message "
+ "handler for interface %s object %s", ifname, path);
+ return -1;
+ }
+
+ return 0;
+}
+
+
+static void flush_object_timeout_handler(void *eloop_ctx, void *timeout_ctx);
+
+
+/**
+ * wpa_dbus_unregister_object_per_iface - Unregisters DBus object
+ * @ctrl_iface: Pointer to dbus private data
+ * @path: DBus path to object which will be unregistered
+ * Returns: Zero on success and -1 on failure
+ *
+ * Unregisters DBus object given by its path
+ */
+int wpa_dbus_unregister_object_per_iface(
+ struct wpas_dbus_priv *ctrl_iface, const char *path)
+{
+ DBusConnection *con = ctrl_iface->con;
+ struct wpa_dbus_object_desc *obj_desc = NULL;
+
+ dbus_connection_get_object_path_data(con, path, (void **) &obj_desc);
+ if (!obj_desc) {
+ wpa_printf(MSG_ERROR, "dbus: %s: Could not obtain object's "
+ "private data: %s", __func__, path);
+ } else {
+ eloop_cancel_timeout(flush_object_timeout_handler, con,
+ obj_desc);
+ }
+
+ if (!dbus_connection_unregister_object_path(con, path))
+ return -1;
+
+ return 0;
+}
+
+
+static void put_changed_properties(const struct wpa_dbus_object_desc *obj_dsc,
+ const char *interface,
+ DBusMessageIter *dict_iter)
+{
+ DBusMessage *getter_reply;
+ DBusMessageIter prop_iter, entry_iter;
+ const struct wpa_dbus_property_desc *dsc;
+ int i;
+
+ for (dsc = obj_dsc->properties, i = 0; dsc && dsc->dbus_property;
+ dsc++, i++) {
+ if (obj_dsc->prop_changed_flags == NULL ||
+ !obj_dsc->prop_changed_flags[i])
+ continue;
+ if (os_strcmp(dsc->dbus_interface, interface) != 0)
+ continue;
+ obj_dsc->prop_changed_flags[i] = 0;
+
+ getter_reply = dsc->getter(NULL, obj_dsc->user_data);
+ if (!getter_reply ||
+ dbus_message_get_type(getter_reply) ==
+ DBUS_MESSAGE_TYPE_ERROR) {
+ wpa_printf(MSG_ERROR, "dbus: %s: Cannot get new value "
+ "of property %s", __func__,
+ dsc->dbus_property);
+ continue;
+ }
+
+ if (!dbus_message_iter_init(getter_reply, &prop_iter) ||
+ !dbus_message_iter_open_container(dict_iter,
+ DBUS_TYPE_DICT_ENTRY,
+ NULL, &entry_iter) ||
+ !dbus_message_iter_append_basic(&entry_iter,
+ DBUS_TYPE_STRING,
+ &dsc->dbus_property))
+ goto err;
+
+ recursive_iter_copy(&prop_iter, &entry_iter);
+
+ if (!dbus_message_iter_close_container(dict_iter, &entry_iter))
+ goto err;
+
+ dbus_message_unref(getter_reply);
+ }
+
+ return;
+
+err:
+ wpa_printf(MSG_ERROR, "dbus: %s: Cannot construct signal", __func__);
+}
+
+
+static void send_prop_changed_signal(
+ DBusConnection *con, const char *path, const char *interface,
+ const struct wpa_dbus_object_desc *obj_dsc)
+{
+ DBusMessage *msg;
+ DBusMessageIter signal_iter, dict_iter;
+
+ msg = dbus_message_new_signal(path, interface, "PropertiesChanged");
+ if (msg == NULL)
+ return;
+
+ dbus_message_iter_init_append(msg, &signal_iter);
+
+ if (!dbus_message_iter_open_container(&signal_iter, DBUS_TYPE_ARRAY,
+ "{sv}", &dict_iter))
+ goto err;
+
+ put_changed_properties(obj_dsc, interface, &dict_iter);
+
+ if (!dbus_message_iter_close_container(&signal_iter, &dict_iter))
+ goto err;
+
+ dbus_connection_send(con, msg, NULL);
+
+out:
+ dbus_message_unref(msg);
+ return;
+
+err:
+ wpa_printf(MSG_DEBUG, "dbus: %s: Failed to construct signal",
+ __func__);
+ goto out;
+}
+
+
+static void flush_object_timeout_handler(void *eloop_ctx, void *timeout_ctx)
+{
+ DBusConnection *con = eloop_ctx;
+ struct wpa_dbus_object_desc *obj_desc = timeout_ctx;
+
+ wpa_printf(MSG_DEBUG, "dbus: %s: Timeout - sending changed properties "
+ "of object %s", __func__, obj_desc->path);
+ wpa_dbus_flush_object_changed_properties(con, obj_desc->path);
+}
+
+
+static void recursive_flush_changed_properties(DBusConnection *con,
+ const char *path)
+{
+ char **objects = NULL;
+ char subobj_path[WPAS_DBUS_OBJECT_PATH_MAX];
+ int i;
+
+ wpa_dbus_flush_object_changed_properties(con, path);
+
+ if (!dbus_connection_list_registered(con, path, &objects))
+ goto out;
+
+ for (i = 0; objects[i]; i++) {
+ os_snprintf(subobj_path, WPAS_DBUS_OBJECT_PATH_MAX,
+ "%s/%s", path, objects[i]);
+ recursive_flush_changed_properties(con, subobj_path);
+ }
+
+out:
+ dbus_free_string_array(objects);
+}
+
+
+/**
+ * wpa_dbus_flush_all_changed_properties - Send all PropertiesChanged signals
+ * @con: DBus connection
+ *
+ * Traverses through all registered objects and sends PropertiesChanged for
+ * each properties.
+ */
+void wpa_dbus_flush_all_changed_properties(DBusConnection *con)
+{
+ recursive_flush_changed_properties(con, WPAS_DBUS_NEW_PATH);
+}
+
+
+/**
+ * wpa_dbus_flush_object_changed_properties - Send PropertiesChanged for object
+ * @con: DBus connection
+ * @path: path to a DBus object for which PropertiesChanged will be sent.
+ *
+ * Iterates over all properties registered with object and for each interface
+ * containing properties marked as changed, sends a PropertiesChanged signal
+ * containing names and new values of properties that have changed.
+ *
+ * You need to call this function after wpa_dbus_mark_property_changed()
+ * if you want to send PropertiesChanged signal immediately (i.e., without
+ * waiting timeout to expire). PropertiesChanged signal for an object is sent
+ * automatically short time after first marking property as changed. All
+ * PropertiesChanged signals are sent automatically after responding on DBus
+ * message, so if you marked a property changed as a result of DBus call
+ * (e.g., param setter), you usually do not need to call this function.
+ */
+void wpa_dbus_flush_object_changed_properties(DBusConnection *con,
+ const char *path)
+{
+ struct wpa_dbus_object_desc *obj_desc = NULL;
+ const struct wpa_dbus_property_desc *dsc;
+ int i;
+
+ dbus_connection_get_object_path_data(con, path, (void **) &obj_desc);
+ if (!obj_desc)
+ return;
+ eloop_cancel_timeout(flush_object_timeout_handler, con, obj_desc);
+
+ dsc = obj_desc->properties;
+ for (dsc = obj_desc->properties, i = 0; dsc && dsc->dbus_property;
+ dsc++, i++) {
+ if (obj_desc->prop_changed_flags == NULL ||
+ !obj_desc->prop_changed_flags[i])
+ continue;
+ send_prop_changed_signal(con, path, dsc->dbus_interface,
+ obj_desc);
+ }
+}
+
+
+#define WPA_DBUS_SEND_PROP_CHANGED_TIMEOUT 5000
+
+
+/**
+ * wpa_dbus_mark_property_changed - Mark a property as changed and
+ * @iface: dbus priv struct
+ * @path: path to DBus object which property has changed
+ * @interface: interface containing changed property
+ * @property: property name which has changed
+ *
+ * Iterates over all properties registered with an object and marks the one
+ * given in parameters as changed. All parameters registered for an object
+ * within a single interface will be aggregated together and sent in one
+ * PropertiesChanged signal when function
+ * wpa_dbus_flush_object_changed_properties() is called.
+ */
+void wpa_dbus_mark_property_changed(struct wpas_dbus_priv *iface,
+ const char *path, const char *interface,
+ const char *property)
+{
+ struct wpa_dbus_object_desc *obj_desc = NULL;
+ const struct wpa_dbus_property_desc *dsc;
+ int i = 0;
+
+ if (iface == NULL)
+ return;
+
+ dbus_connection_get_object_path_data(iface->con, path,
+ (void **) &obj_desc);
+ if (!obj_desc) {
+ wpa_printf(MSG_ERROR, "dbus: wpa_dbus_property_changed: "
+ "could not obtain object's private data: %s", path);
+ return;
+ }
+
+ for (dsc = obj_desc->properties; dsc && dsc->dbus_property; dsc++, i++)
+ if (os_strcmp(property, dsc->dbus_property) == 0 &&
+ os_strcmp(interface, dsc->dbus_interface) == 0) {
+ if (obj_desc->prop_changed_flags)
+ obj_desc->prop_changed_flags[i] = 1;
+ break;
+ }
+
+ if (!dsc || !dsc->dbus_property) {
+ wpa_printf(MSG_ERROR, "dbus: wpa_dbus_property_changed: "
+ "no property %s in object %s", property, path);
+ return;
+ }
+
+ if (!eloop_is_timeout_registered(flush_object_timeout_handler,
+ iface->con, obj_desc->path)) {
+ eloop_register_timeout(0, WPA_DBUS_SEND_PROP_CHANGED_TIMEOUT,
+ flush_object_timeout_handler,
+ iface->con, obj_desc);
+ }
+}
+
+
+/**
+ * wpa_dbus_get_object_properties - Put object's properties into dictionary
+ * @iface: dbus priv struct
+ * @path: path to DBus object which properties will be obtained
+ * @interface: interface name which properties will be obtained
+ * @dict_iter: correct, open DBus dictionary iterator.
+ *
+ * Iterates over all properties registered with object and execute getters
+ * of those, which are readable and which interface matches interface
+ * specified as argument. Obtained properties values are stored in
+ * dict_iter dictionary.
+ */
+void wpa_dbus_get_object_properties(struct wpas_dbus_priv *iface,
+ const char *path, const char *interface,
+ DBusMessageIter *dict_iter)
+{
+ struct wpa_dbus_object_desc *obj_desc = NULL;
+
+ dbus_connection_get_object_path_data(iface->con, path,
+ (void **) &obj_desc);
+ if (!obj_desc) {
+ wpa_printf(MSG_ERROR, "dbus: wpa_dbus_get_object_properties: "
+ "could not obtain object's private data: %s", path);
+ return;
+ }
+
+ fill_dict_with_properties(dict_iter, obj_desc->properties,
+ interface, obj_desc->user_data);
+}
projects / mech_eap.orig / blobdiff