2
* WPA Supplicant / dbus-based control interface
3
* Copyright (c) 2006, Dan Williams <dcbw@redhat.com> and Red Hat, Inc.
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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* Alternatively, this software may be distributed under the terms of BSD
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* See README and COPYING for more details.
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#include "wpa_supplicant_i.h"
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#include "ctrl_iface_dbus.h"
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#include "ctrl_iface_dbus_handlers.h"
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#define DBUS_VERSION (DBUS_VERSION_MAJOR << 8 | DBUS_VERSION_MINOR)
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#define DBUS_VER(major, minor) ((major) << 8 | (minor))
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#if DBUS_VERSION < DBUS_VER(1,1)
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#define dbus_watch_get_unix_fd dbus_watch_get_fd
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struct ctrl_iface_dbus_priv {
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struct wpa_global *global;
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static void process_watch(struct ctrl_iface_dbus_priv *iface,
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DBusWatch *watch, eloop_event_type type)
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dbus_connection_ref(iface->con);
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iface->should_dispatch = 0;
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if (type == EVENT_TYPE_READ)
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dbus_watch_handle(watch, DBUS_WATCH_READABLE);
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else if (type == EVENT_TYPE_WRITE)
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dbus_watch_handle(watch, DBUS_WATCH_WRITABLE);
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else if (type == EVENT_TYPE_EXCEPTION)
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dbus_watch_handle(watch, DBUS_WATCH_ERROR);
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if (iface->should_dispatch) {
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while (dbus_connection_get_dispatch_status(iface->con) ==
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DBUS_DISPATCH_DATA_REMAINS)
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dbus_connection_dispatch(iface->con);
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iface->should_dispatch = 0;
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dbus_connection_unref(iface->con);
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static void process_watch_exception(int sock, void *eloop_ctx, void *sock_ctx)
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process_watch(eloop_ctx, sock_ctx, EVENT_TYPE_EXCEPTION);
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static void process_watch_read(int sock, void *eloop_ctx, void *sock_ctx)
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process_watch(eloop_ctx, sock_ctx, EVENT_TYPE_READ);
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static void process_watch_write(int sock, void *eloop_ctx, void *sock_ctx)
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process_watch(eloop_ctx, sock_ctx, EVENT_TYPE_WRITE);
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static void connection_setup_add_watch(struct ctrl_iface_dbus_priv *iface,
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if (!dbus_watch_get_enabled(watch))
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flags = dbus_watch_get_flags(watch);
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fd = dbus_watch_get_unix_fd(watch);
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eloop_register_sock(fd, EVENT_TYPE_EXCEPTION, process_watch_exception,
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if (flags & DBUS_WATCH_READABLE) {
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eloop_register_sock(fd, EVENT_TYPE_READ, process_watch_read,
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if (flags & DBUS_WATCH_WRITABLE) {
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eloop_register_sock(fd, EVENT_TYPE_WRITE, process_watch_write,
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dbus_watch_set_data(watch, iface, NULL);
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static void connection_setup_remove_watch(struct ctrl_iface_dbus_priv *iface,
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flags = dbus_watch_get_flags(watch);
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fd = dbus_watch_get_unix_fd(watch);
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eloop_unregister_sock(fd, EVENT_TYPE_EXCEPTION);
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if (flags & DBUS_WATCH_READABLE)
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eloop_unregister_sock(fd, EVENT_TYPE_READ);
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if (flags & DBUS_WATCH_WRITABLE)
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eloop_unregister_sock(fd, EVENT_TYPE_WRITE);
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dbus_watch_set_data(watch, NULL, NULL);
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static dbus_bool_t add_watch(DBusWatch *watch, void *data)
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connection_setup_add_watch(data, watch);
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static void remove_watch(DBusWatch *watch, void *data)
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connection_setup_remove_watch(data, watch);
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static void watch_toggled(DBusWatch *watch, void *data)
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if (dbus_watch_get_enabled(watch))
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add_watch(watch, data);
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remove_watch(watch, data);
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static void process_timeout(void *eloop_ctx, void *sock_ctx)
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DBusTimeout *timeout = sock_ctx;
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dbus_timeout_handle(timeout);
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static void connection_setup_add_timeout(struct ctrl_iface_dbus_priv *iface,
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DBusTimeout *timeout)
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if (!dbus_timeout_get_enabled(timeout))
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eloop_register_timeout(0, dbus_timeout_get_interval(timeout) * 1000,
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process_timeout, iface, timeout);
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dbus_timeout_set_data(timeout, iface, NULL);
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static void connection_setup_remove_timeout(struct ctrl_iface_dbus_priv *iface,
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DBusTimeout *timeout)
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eloop_cancel_timeout(process_timeout, iface, timeout);
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dbus_timeout_set_data(timeout, NULL, NULL);
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static dbus_bool_t add_timeout(DBusTimeout *timeout, void *data)
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if (!dbus_timeout_get_enabled(timeout))
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connection_setup_add_timeout(data, timeout);
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static void remove_timeout(DBusTimeout *timeout, void *data)
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connection_setup_remove_timeout(data, timeout);
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static void timeout_toggled(DBusTimeout *timeout, void *data)
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if (dbus_timeout_get_enabled(timeout))
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add_timeout(timeout, data);
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remove_timeout(timeout, data);
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static void process_wakeup_main(int sig, void *eloop_ctx, void *signal_ctx)
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struct ctrl_iface_dbus_priv *iface = signal_ctx;
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if (sig != SIGPOLL || !iface->con)
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if (dbus_connection_get_dispatch_status(iface->con) !=
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DBUS_DISPATCH_DATA_REMAINS)
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/* Only dispatch once - we do not want to starve other events */
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dbus_connection_ref(iface->con);
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dbus_connection_dispatch(iface->con);
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dbus_connection_unref(iface->con);
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* wakeup_main - Attempt to wake our mainloop up
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* @data: dbus control interface private data
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* Try to wake up the main eloop so it will process
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* dbus events that may have happened.
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static void wakeup_main(void *data)
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struct ctrl_iface_dbus_priv *iface = data;
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/* Use SIGPOLL to break out of the eloop select() */
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iface->should_dispatch = 1;
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* connection_setup_wakeup_main - Tell dbus about our wakeup_main function
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* @iface: dbus control interface private data
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* Returns: 0 on success, -1 on failure
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* Register our wakeup_main handler with dbus
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static int connection_setup_wakeup_main(struct ctrl_iface_dbus_priv *iface)
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if (eloop_register_signal(SIGPOLL, process_wakeup_main, iface))
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dbus_connection_set_wakeup_main_function(iface->con, wakeup_main,
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* wpa_supplicant_dbus_next_objid - Return next available object id
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* @iface: dbus control interface private data
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u32 wpa_supplicant_dbus_next_objid (struct ctrl_iface_dbus_priv *iface)
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return iface->next_objid++;
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* wpas_dbus_decompose_object_path - Decompose an interface object path into parts
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* @path: The dbus object path
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* @network: (out) the configured network this object path refers to, if any
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* @bssid: (out) the scanned bssid this object path refers to, if any
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* Returns: The object path of the network interface this path refers to
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* For a given object path, decomposes the object path into object id, network,
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* and BSSID parts, if those parts exist.
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char * wpas_dbus_decompose_object_path(const char *path, char **network,
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const unsigned int dev_path_prefix_len =
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strlen(WPAS_DBUS_PATH_INTERFACES "/");
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/* Be a bit paranoid about path */
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if (!path || strncmp(path, WPAS_DBUS_PATH_INTERFACES "/",
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dev_path_prefix_len))
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/* Ensure there's something at the end of the path */
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if ((path + dev_path_prefix_len)[0] == '\0')
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obj_path_only = strdup(path);
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if (obj_path_only == NULL)
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next_sep = strchr(obj_path_only + dev_path_prefix_len, '/');
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if (next_sep != NULL) {
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const char *net_part = strstr(next_sep,
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WPAS_DBUS_NETWORKS_PART "/");
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const char *bssid_part = strstr(next_sep,
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WPAS_DBUS_BSSIDS_PART "/");
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if (network && net_part) {
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/* Deal with a request for a configured network */
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const char *net_name = net_part +
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strlen(WPAS_DBUS_NETWORKS_PART "/");
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if (strlen(net_name))
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*network = strdup(net_name);
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} else if (bssid && bssid_part) {
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/* Deal with a request for a scanned BSSID */
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const char *bssid_name = bssid_part +
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strlen(WPAS_DBUS_BSSIDS_PART "/");
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if (strlen(bssid_name))
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*bssid = strdup(bssid_name);
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/* Cut off interface object path before "/" */
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return obj_path_only;
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* wpas_dbus_new_invalid_iface_error - Return a new invalid interface error message
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* @message: Pointer to incoming dbus message this error refers to
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* Returns: A dbus error message
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* Convenience function to create and return an invalid interface error
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DBusMessage * wpas_dbus_new_invalid_iface_error(DBusMessage *message)
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return dbus_message_new_error(message, WPAS_ERROR_INVALID_IFACE,
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"wpa_supplicant knows nothing about "
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* wpas_dbus_new_invalid_network_error - Return a new invalid network error message
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* @message: Pointer to incoming dbus message this error refers to
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* Returns: a dbus error message
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* Convenience function to create and return an invalid network error
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DBusMessage * wpas_dbus_new_invalid_network_error(DBusMessage *message)
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return dbus_message_new_error(message, WPAS_ERROR_INVALID_NETWORK,
362
"The requested network does not exist.");
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* wpas_dbus_new_invalid_bssid_error - Return a new invalid bssid error message
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* @message: Pointer to incoming dbus message this error refers to
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* Returns: a dbus error message
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* Convenience function to create and return an invalid bssid error
373
static DBusMessage * wpas_dbus_new_invalid_bssid_error(DBusMessage *message)
375
return dbus_message_new_error(message, WPAS_ERROR_INVALID_BSSID,
376
"The BSSID requested was invalid.");
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* wpas_dispatch_network_method - dispatch messages for configured networks
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* @message: the incoming dbus message
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* @wpa_s: a network interface's data
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* @network_id: id of the configured network we're interested in
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* Returns: a reply dbus message, or a dbus error message
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* This function dispatches all incoming dbus messages for configured networks.
389
static DBusMessage * wpas_dispatch_network_method(DBusMessage *message,
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struct wpa_supplicant *wpa_s,
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DBusMessage *reply = NULL;
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const char *method = dbus_message_get_member(message);
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struct wpa_ssid *ssid;
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ssid = wpa_config_get_network(wpa_s->conf, network_id);
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return wpas_dbus_new_invalid_network_error(message);
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if (!strcmp(method, "set"))
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reply = wpas_dbus_iface_set_network(message, wpa_s, ssid);
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else if (!strcmp(method, "enable"))
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reply = wpas_dbus_iface_enable_network(message, wpa_s, ssid);
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else if (!strcmp(method, "disable"))
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reply = wpas_dbus_iface_disable_network(message, wpa_s, ssid);
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* wpas_dispatch_bssid_method - dispatch messages for scanned networks
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* @message: the incoming dbus message
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* @wpa_s: a network interface's data
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* @bssid: bssid of the scanned network we're interested in
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* Returns: a reply dbus message, or a dbus error message
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* This function dispatches all incoming dbus messages for scanned networks.
421
static DBusMessage * wpas_dispatch_bssid_method(DBusMessage *message,
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struct wpa_supplicant *wpa_s,
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DBusMessage *reply = NULL;
426
const char *method = dbus_message_get_member(message);
427
struct wpa_scan_res *res = NULL;
430
/* Ensure we actually have scan data */
431
if (wpa_s->scan_res == NULL &&
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wpa_supplicant_get_scan_results(wpa_s) < 0) {
433
reply = wpas_dbus_new_invalid_bssid_error(message);
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/* Find the bssid's scan data */
438
for (i = 0; i < wpa_s->scan_res->num; i++) {
439
struct wpa_scan_res *search_res = wpa_s->scan_res->res[i];
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memset(mac_str, 0, sizeof(mac_str));
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snprintf(mac_str, sizeof(mac_str) - 1, WPAS_DBUS_BSSID_FORMAT,
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MAC2STR(search_res->bssid));
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if (!strcmp(bssid, mac_str)) {
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reply = wpas_dbus_new_invalid_bssid_error(message);
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/* Dispatch the method call against the scanned bssid */
457
if (!strcmp(method, "properties"))
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reply = wpas_dbus_bssid_properties(message, wpa_s, res);
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* wpas_iface_message_handler - Dispatch messages for interfaces or networks
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* @connection: Connection to the system message bus
468
* @message: An incoming dbus message
469
* @user_data: A pointer to a dbus control interface data structure
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* Returns: Whether or not the message was handled
472
* This function dispatches all incoming dbus messages for network interfaces,
473
* or objects owned by them, such as scanned BSSIDs and configured networks.
475
static DBusHandlerResult wpas_iface_message_handler(DBusConnection *connection,
476
DBusMessage *message,
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struct wpa_supplicant *wpa_s = user_data;
480
const char *method = dbus_message_get_member(message);
481
const char *path = dbus_message_get_path(message);
482
const char *msg_interface = dbus_message_get_interface(message);
483
char *iface_obj_path = NULL;
484
char *network = NULL;
486
DBusMessage *reply = NULL;
488
/* Caller must specify a message interface */
492
iface_obj_path = wpas_dbus_decompose_object_path(path, &network,
494
if (iface_obj_path == NULL) {
495
reply = wpas_dbus_new_invalid_iface_error(message);
499
/* Make sure the message's object path actually refers to the
500
* wpa_supplicant structure it's supposed to (which is wpa_s)
502
if (wpa_supplicant_get_iface_by_dbus_path(wpa_s->global,
503
iface_obj_path) != wpa_s) {
504
reply = wpas_dbus_new_invalid_iface_error(message);
508
if (network && !strcmp(msg_interface, WPAS_DBUS_IFACE_NETWORK)) {
509
/* A method for one of this interface's configured networks */
510
int nid = strtoul(network, NULL, 10);
512
reply = wpas_dispatch_network_method(message, wpa_s,
515
reply = wpas_dbus_new_invalid_network_error(message);
516
} else if (bssid && !strcmp(msg_interface, WPAS_DBUS_IFACE_BSSID)) {
517
/* A method for one of this interface's scanned BSSIDs */
518
reply = wpas_dispatch_bssid_method(message, wpa_s, bssid);
519
} else if (!strcmp(msg_interface, WPAS_DBUS_IFACE_INTERFACE)) {
520
/* A method for an interface only. */
521
if (!strcmp(method, "scan"))
522
reply = wpas_dbus_iface_scan(message, wpa_s);
523
else if (!strcmp(method, "scanResults"))
524
reply = wpas_dbus_iface_scan_results(message, wpa_s);
525
else if (!strcmp(method, "addNetwork"))
526
reply = wpas_dbus_iface_add_network(message, wpa_s);
527
else if (!strcmp(method, "removeNetwork"))
528
reply = wpas_dbus_iface_remove_network(message, wpa_s);
529
else if (!strcmp(method, "selectNetwork"))
530
reply = wpas_dbus_iface_select_network(message, wpa_s);
531
else if (!strcmp(method, "capabilities"))
532
reply = wpas_dbus_iface_capabilities(message, wpa_s);
533
else if (!strcmp(method, "disconnect"))
534
reply = wpas_dbus_iface_disconnect(message, wpa_s);
535
else if (!strcmp(method, "setAPScan"))
536
reply = wpas_dbus_iface_set_ap_scan(message, wpa_s);
537
else if (!strcmp(method, "state"))
538
reply = wpas_dbus_iface_get_state(message, wpa_s);
539
else if (!strcmp(method, "setBlobs"))
540
reply = wpas_dbus_iface_set_blobs(message, wpa_s);
541
else if (!strcmp(method, "removeBlobs"))
542
reply = wpas_dbus_iface_remove_blobs(message, wpa_s);
545
/* If the message was handled, send back the reply */
547
dbus_connection_send(connection, reply, NULL);
548
dbus_message_unref(reply);
552
free(iface_obj_path);
555
return reply ? DBUS_HANDLER_RESULT_HANDLED :
556
DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
561
* wpas_message_handler - dispatch incoming dbus messages
562
* @connection: connection to the system message bus
563
* @message: an incoming dbus message
564
* @user_data: a pointer to a dbus control interface data structure
565
* Returns: whether or not the message was handled
567
* This function dispatches all incoming dbus messages to the correct
568
* handlers, depending on what the message's target object path is,
569
* and what the method call is.
571
static DBusHandlerResult wpas_message_handler(DBusConnection *connection,
572
DBusMessage *message, void *user_data)
574
struct ctrl_iface_dbus_priv *ctrl_iface = user_data;
577
const char *msg_interface;
578
DBusMessage *reply = NULL;
580
method = dbus_message_get_member(message);
581
path = dbus_message_get_path(message);
582
msg_interface = dbus_message_get_interface(message);
583
if (!method || !path || !ctrl_iface || !msg_interface)
584
return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
586
/* Validate the method interface */
587
if (strcmp(msg_interface, WPAS_DBUS_INTERFACE) != 0)
588
return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
590
if (!strcmp(path, WPAS_DBUS_PATH)) {
591
/* dispatch methods against our global dbus interface here */
592
if (!strcmp(method, "addInterface")) {
593
reply = wpas_dbus_global_add_interface(
594
message, ctrl_iface->global);
595
} else if (!strcmp(method, "removeInterface")) {
596
reply = wpas_dbus_global_remove_interface(
597
message, ctrl_iface->global);
598
} else if (!strcmp(method, "getInterface")) {
599
reply = wpas_dbus_global_get_interface(
600
message, ctrl_iface->global);
604
/* If the message was handled, send back the reply */
606
dbus_connection_send(connection, reply, NULL);
607
dbus_message_unref(reply);
610
return reply ? DBUS_HANDLER_RESULT_HANDLED :
611
DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
616
* wpa_supplicant_dbus_notify_scan_results - Send a scan results signal
617
* @wpa_s: %wpa_supplicant network interface data
618
* Returns: 0 on success, -1 on failure
620
* Notify listeners that this interface has updated scan results.
622
void wpa_supplicant_dbus_notify_scan_results(struct wpa_supplicant *wpa_s)
624
struct ctrl_iface_dbus_priv *iface = wpa_s->global->dbus_ctrl_iface;
625
DBusMessage *_signal;
628
/* Do nothing if the control interface is not turned on */
632
path = wpa_supplicant_get_dbus_path(wpa_s);
634
perror("wpa_supplicant_dbus_notify_scan_results[dbus]: "
635
"interface didn't have a dbus path");
636
wpa_printf(MSG_ERROR,
637
"wpa_supplicant_dbus_notify_scan_results[dbus]: "
638
"interface didn't have a dbus path; can't send "
639
"scan result signal.");
642
_signal = dbus_message_new_signal(path, WPAS_DBUS_IFACE_INTERFACE,
643
"ScanResultsAvailable");
644
if (_signal == NULL) {
645
perror("wpa_supplicant_dbus_notify_scan_results[dbus]: "
646
"couldn't create dbus signal; likely out of memory");
647
wpa_printf(MSG_ERROR, "dbus control interface: not enough "
648
"memory to send scan results signal.");
651
dbus_connection_send(iface->con, _signal, NULL);
652
dbus_message_unref(_signal);
657
* wpa_supplicant_dbus_notify_state_change - Send a state change signal
658
* @wpa_s: %wpa_supplicant network interface data
659
* @new_state: new state wpa_supplicant is entering
660
* @old_state: old state wpa_supplicant is leaving
661
* Returns: 0 on success, -1 on failure
663
* Notify listeners that wpa_supplicant has changed state
665
void wpa_supplicant_dbus_notify_state_change(struct wpa_supplicant *wpa_s,
666
wpa_states new_state,
667
wpa_states old_state)
669
struct ctrl_iface_dbus_priv *iface;
670
DBusMessage *_signal = NULL;
672
const char *new_state_str, *old_state_str;
674
/* Do nothing if the control interface is not turned on */
675
if (wpa_s->global == NULL)
677
iface = wpa_s->global->dbus_ctrl_iface;
681
/* Only send signal if state really changed */
682
if (new_state == old_state)
685
path = wpa_supplicant_get_dbus_path(wpa_s);
687
perror("wpa_supplicant_dbus_notify_state_change[dbus]: "
688
"interface didn't have a dbus path");
689
wpa_printf(MSG_ERROR,
690
"wpa_supplicant_dbus_notify_state_change[dbus]: "
691
"interface didn't have a dbus path; can't send "
695
_signal = dbus_message_new_signal(path, WPAS_DBUS_IFACE_INTERFACE,
697
if (_signal == NULL) {
698
perror("wpa_supplicant_dbus_notify_state_change[dbus]: "
699
"couldn't create dbus signal; likely out of memory");
700
wpa_printf(MSG_ERROR,
701
"wpa_supplicant_dbus_notify_state_change[dbus]: "
702
"couldn't create dbus signal; likely out of "
707
new_state_str = wpa_supplicant_state_txt(new_state);
708
old_state_str = wpa_supplicant_state_txt(old_state);
709
if (new_state_str == NULL || old_state_str == NULL) {
710
perror("wpa_supplicant_dbus_notify_state_change[dbus]: "
711
"couldn't convert state strings");
712
wpa_printf(MSG_ERROR,
713
"wpa_supplicant_dbus_notify_state_change[dbus]: "
714
"couldn't convert state strings.");
718
if (!dbus_message_append_args(_signal,
719
DBUS_TYPE_STRING, &new_state_str,
720
DBUS_TYPE_STRING, &old_state_str,
721
DBUS_TYPE_INVALID)) {
722
perror("wpa_supplicant_dbus_notify_state_change[dbus]: "
723
"not enough memory to construct state change signal.");
724
wpa_printf(MSG_ERROR,
725
"wpa_supplicant_dbus_notify_state_change[dbus]: "
726
"not enough memory to construct state change "
731
dbus_connection_send(iface->con, _signal, NULL);
734
dbus_message_unref(_signal);
739
* integrate_with_eloop - Register our mainloop integration with dbus
740
* @connection: connection to the system message bus
741
* @iface: a dbus control interface data structure
742
* Returns: 0 on success, -1 on failure
744
* We register our mainloop integration functions with dbus here.
746
static int integrate_with_eloop(DBusConnection *connection,
747
struct ctrl_iface_dbus_priv *iface)
749
if (!dbus_connection_set_watch_functions(connection, add_watch,
750
remove_watch, watch_toggled,
752
perror("dbus_connection_set_watch_functions[dbus]");
753
wpa_printf(MSG_ERROR, "Not enough memory to set up dbus.");
757
if (!dbus_connection_set_timeout_functions(connection, add_timeout,
759
timeout_toggled, iface,
761
perror("dbus_connection_set_timeout_functions[dbus]");
762
wpa_printf(MSG_ERROR, "Not enough memory to set up dbus.");
766
if (connection_setup_wakeup_main(iface) < 0) {
767
perror("connection_setup_wakeup_main[dbus]");
768
wpa_printf(MSG_ERROR, "Could not setup main wakeup function.");
777
* dispatch_initial_dbus_messages - Dispatch initial dbus messages after
779
* @eloop_ctx: the DBusConnection to dispatch on
780
* @timeout_ctx: unused
782
* If clients are quick to notice that wpa_supplicant claimed its bus name,
783
* there may have been messages that came in before initialization was
784
* all finished. Dispatch those here.
786
static void dispatch_initial_dbus_messages(void *eloop_ctx, void *timeout_ctx)
788
DBusConnection *con = eloop_ctx;
790
while (dbus_connection_get_dispatch_status(con) ==
791
DBUS_DISPATCH_DATA_REMAINS)
792
dbus_connection_dispatch(con);
797
* wpa_supplicant_dbus_ctrl_iface_init - Initialize dbus control interface
798
* @global: Pointer to global data from wpa_supplicant_init()
799
* Returns: Pointer to dbus_ctrl_iface date or %NULL on failure
801
* Initialize the dbus control interface and start receiving commands from
802
* external programs over the bus.
804
struct ctrl_iface_dbus_priv *
805
wpa_supplicant_dbus_ctrl_iface_init(struct wpa_global *global)
807
struct ctrl_iface_dbus_priv *iface;
810
DBusObjectPathVTable wpas_vtable = {
811
NULL, &wpas_message_handler, NULL, NULL, NULL, NULL
814
iface = os_zalloc(sizeof(struct ctrl_iface_dbus_priv));
818
iface->global = global;
820
/* Get a reference to the system bus */
821
dbus_error_init(&error);
822
iface->con = dbus_bus_get(DBUS_BUS_SYSTEM, &error);
823
dbus_error_free(&error);
825
perror("dbus_bus_get[ctrl_iface_dbus]");
826
wpa_printf(MSG_ERROR, "Could not acquire the system bus.");
830
/* Tell dbus about our mainloop integration functions */
831
if (integrate_with_eloop(iface->con, iface))
834
/* Register the message handler for the global dbus interface */
835
if (!dbus_connection_register_object_path(iface->con,
836
WPAS_DBUS_PATH, &wpas_vtable,
838
perror("dbus_connection_register_object_path[dbus]");
839
wpa_printf(MSG_ERROR, "Could not set up DBus message "
844
/* Register our service with the message bus */
845
dbus_error_init(&error);
846
switch (dbus_bus_request_name(iface->con, WPAS_DBUS_SERVICE,
848
case DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER:
851
case DBUS_REQUEST_NAME_REPLY_EXISTS:
852
case DBUS_REQUEST_NAME_REPLY_IN_QUEUE:
853
case DBUS_REQUEST_NAME_REPLY_ALREADY_OWNER:
854
perror("dbus_bus_request_name[dbus]");
855
wpa_printf(MSG_ERROR, "Could not request DBus service name: "
856
"already registered.");
859
perror("dbus_bus_request_name[dbus]");
860
wpa_printf(MSG_ERROR, "Could not request DBus service name: "
861
"%s %s.", error.name, error.message);
864
dbus_error_free(&error);
869
wpa_printf(MSG_DEBUG, "Providing DBus service '" WPAS_DBUS_SERVICE
873
* Dispatch initial DBus messages that may have come in since the bus
874
* name was claimed above. Happens when clients are quick to notice the
875
* wpa_supplicant service.
877
* FIXME: is there a better solution to this problem?
879
eloop_register_timeout(0, 50, dispatch_initial_dbus_messages,
885
wpa_supplicant_dbus_ctrl_iface_deinit(iface);
891
* wpa_supplicant_dbus_ctrl_iface_deinit - Deinitialize dbus ctrl interface
892
* @iface: Pointer to dbus private data from
893
* wpa_supplicant_dbus_ctrl_iface_init()
895
* Deinitialize the dbus control interface that was initialized with
896
* wpa_supplicant_dbus_ctrl_iface_init().
898
void wpa_supplicant_dbus_ctrl_iface_deinit(struct ctrl_iface_dbus_priv *iface)
904
eloop_cancel_timeout(dispatch_initial_dbus_messages,
906
dbus_connection_set_watch_functions(iface->con, NULL, NULL,
908
dbus_connection_set_timeout_functions(iface->con, NULL, NULL,
910
dbus_connection_unref(iface->con);
913
memset(iface, 0, sizeof(struct ctrl_iface_dbus_priv));
919
* wpas_dbus_register_new_iface - Register a new interface with dbus
920
* @global: Global %wpa_supplicant data
921
* @wpa_s: %wpa_supplicant interface description structure to register
922
* Returns: 0 on success, -1 on error
924
* Registers a new interface with dbus and assigns it a dbus object path.
926
int wpas_dbus_register_iface(struct wpa_supplicant *wpa_s)
928
struct ctrl_iface_dbus_priv *ctrl_iface =
929
wpa_s->global->dbus_ctrl_iface;
930
DBusConnection * con;
932
DBusObjectPathVTable vtable = {
933
NULL, &wpas_iface_message_handler, NULL, NULL, NULL, NULL
938
/* Do nothing if the control interface is not turned on */
939
if (ctrl_iface == NULL)
942
con = ctrl_iface->con;
943
next = wpa_supplicant_dbus_next_objid(ctrl_iface);
945
/* Create and set the interface's object path */
946
path = os_zalloc(WPAS_DBUS_OBJECT_PATH_MAX);
949
snprintf(path, WPAS_DBUS_OBJECT_PATH_MAX,
950
WPAS_DBUS_PATH_INTERFACES "/%u",
952
if (wpa_supplicant_set_dbus_path(wpa_s, path)) {
953
wpa_printf(MSG_DEBUG,
954
"Failed to set dbus path for interface %s",
959
/* Register the message handler for the interface functions */
960
if (!dbus_connection_register_fallback(con, path, &vtable, wpa_s)) {
961
perror("wpas_dbus_register_iface [dbus]");
962
wpa_printf(MSG_ERROR, "Could not set up DBus message "
963
"handler for interface %s.", wpa_s->ifname);
975
* wpas_dbus_unregister_iface - Unregister an interface from dbus
976
* @wpa_s: wpa_supplicant interface structure
977
* Returns: 0 on success, -1 on failure
979
* Unregisters the interface with dbus
981
int wpas_dbus_unregister_iface(struct wpa_supplicant *wpa_s)
983
struct ctrl_iface_dbus_priv *ctrl_iface;
987
/* Do nothing if the control interface is not turned on */
988
if (wpa_s == NULL || wpa_s->global == NULL)
990
ctrl_iface = wpa_s->global->dbus_ctrl_iface;
991
if (ctrl_iface == NULL)
994
con = ctrl_iface->con;
995
path = wpa_supplicant_get_dbus_path(wpa_s);
997
if (!dbus_connection_unregister_object_path(con, path))
1000
free(wpa_s->dbus_path);
1001
wpa_s->dbus_path = NULL;
1008
* wpa_supplicant_get_iface_by_dbus_path - Get a new network interface
1009
* @global: Pointer to global data from wpa_supplicant_init()
1010
* @path: Pointer to a dbus object path representing an interface
1011
* Returns: Pointer to the interface or %NULL if not found
1013
struct wpa_supplicant * wpa_supplicant_get_iface_by_dbus_path(
1014
struct wpa_global *global, const char *path)
1016
struct wpa_supplicant *wpa_s;
1018
for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
1019
if (strcmp(wpa_s->dbus_path, path) == 0)
1027
* wpa_supplicant_set_dbus_path - Assign a dbus path to an interface
1028
* @wpa_s: wpa_supplicant interface structure
1029
* @path: dbus path to set on the interface
1030
* Returns: 0 on succes, -1 on error
1032
int wpa_supplicant_set_dbus_path(struct wpa_supplicant *wpa_s,
1035
u32 len = strlen (path);
1036
if (len >= WPAS_DBUS_OBJECT_PATH_MAX)
1038
if (wpa_s->dbus_path)
1040
wpa_s->dbus_path = strdup(path);
1046
* wpa_supplicant_get_dbus_path - Get an interface's dbus path
1047
* @wpa_s: %wpa_supplicant interface structure
1048
* Returns: Interface's dbus object path, or %NULL on error
1050
const char * wpa_supplicant_get_dbus_path(struct wpa_supplicant *wpa_s)
1052
return wpa_s->dbus_path;
added
removed
wpa_supplicant/ctrl_iface_dbus.c
