ctrl_iface_dbus_handlers.c

WLAN无线网络管理的最新程序

error:
	if (reply)
		dbus_message_unref(reply);
	return dbus_message_new_error(message, WPAS_ERROR_INTERNAL_ERROR,
				      "an internal error occurred returning "
				      "BSSID properties.");
}


/**
 * wpas_dbus_iface_capabilities - Return interface capabilities
 * @message: Pointer to incoming dbus message
 * @wpa_s: wpa_supplicant structure for a network interface
 * Returns: A dbus message containing a dict of strings
 *
 * Handler function for "capabilities" method call of an interface.
 */
DBusMessage * wpas_dbus_iface_capabilities(DBusMessage *message,
					   struct wpa_supplicant *wpa_s)
{
	DBusMessage *reply = NULL;
	struct wpa_driver_capa capa;
	int res;
	DBusMessageIter iter, iter_dict;
	char **eap_methods;
	size_t num_items;
	dbus_bool_t strict = FALSE;
	DBusMessageIter iter_dict_entry, iter_dict_val, iter_array;

	if (!dbus_message_get_args(message, NULL,
				   DBUS_TYPE_BOOLEAN, &strict,
				   DBUS_TYPE_INVALID))
		strict = FALSE;

	reply = dbus_message_new_method_return(message);

	dbus_message_iter_init_append(reply, &iter);
	if (!wpa_dbus_dict_open_write(&iter, &iter_dict))
		goto error;

	/* EAP methods */
	eap_methods = eap_get_names_as_string_array(&num_items);
	if (eap_methods) {
		dbus_bool_t success = FALSE;
		size_t i = 0;

		success = wpa_dbus_dict_append_string_array(
			&iter_dict, "eap", (const char **) eap_methods,
			num_items);

		/* free returned method array */
		while (eap_methods[i])
			free(eap_methods[i++]);
		free(eap_methods);

		if (!success)
			goto error;
	}

	res = wpa_drv_get_capa(wpa_s, &capa);

	/***** pairwise cipher */
	if (res < 0) {
		if (!strict) {
			const char *args[] = {"CCMP", "TKIP", "NONE"};
			if (!wpa_dbus_dict_append_string_array(
				    &iter_dict, "pairwise", args,
				    sizeof(args) / sizeof(char*)))
				goto error;
		}
	} else {
		if (!wpa_dbus_dict_begin_string_array(&iter_dict, "pairwise",
						      &iter_dict_entry,
						      &iter_dict_val,
						      &iter_array))
			goto error;

		if (capa.enc & WPA_DRIVER_CAPA_ENC_CCMP) {
			if (!wpa_dbus_dict_string_array_add_element(
				    &iter_array, "CCMP"))
				goto error;
		}

		if (capa.enc & WPA_DRIVER_CAPA_ENC_TKIP) {
			if (!wpa_dbus_dict_string_array_add_element(
				    &iter_array, "TKIP"))
				goto error;
		}

		if (capa.key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_WPA_NONE) {
			if (!wpa_dbus_dict_string_array_add_element(
				    &iter_array, "NONE"))
				goto error;
		}

		if (!wpa_dbus_dict_end_string_array(&iter_dict,
						    &iter_dict_entry,
						    &iter_dict_val,
						    &iter_array))
			goto error;
	}

	/***** group cipher */
	if (res < 0) {
		if (!strict) {
			const char *args[] = {
				"CCMP", "TKIP", "WEP104", "WEP40"
			};
			if (!wpa_dbus_dict_append_string_array(
				    &iter_dict, "group", args,
				    sizeof(args) / sizeof(char*)))
				goto error;
		}
	} else {
		if (!wpa_dbus_dict_begin_string_array(&iter_dict, "group",
						      &iter_dict_entry,
						      &iter_dict_val,
						      &iter_array))
			goto error;

		if (capa.enc & WPA_DRIVER_CAPA_ENC_CCMP) {
			if (!wpa_dbus_dict_string_array_add_element(
				    &iter_array, "CCMP"))
				goto error;
		}

		if (capa.enc & WPA_DRIVER_CAPA_ENC_TKIP) {
			if (!wpa_dbus_dict_string_array_add_element(
				    &iter_array, "TKIP"))
				goto error;
		}

		if (capa.enc & WPA_DRIVER_CAPA_ENC_WEP104) {
			if (!wpa_dbus_dict_string_array_add_element(
				    &iter_array, "WEP104"))
				goto error;
		}

		if (capa.enc & WPA_DRIVER_CAPA_ENC_WEP40) {
			if (!wpa_dbus_dict_string_array_add_element(
				    &iter_array, "WEP40"))
				goto error;
		}

		if (!wpa_dbus_dict_end_string_array(&iter_dict,
						    &iter_dict_entry,
						    &iter_dict_val,
						    &iter_array))
			goto error;
	}

	/***** key management */
	if (res < 0) {
		if (!strict) {
			const char *args[] = {
				"WPA-PSK", "WPA-EAP", "IEEE8021X", "WPA-NONE",
				"NONE"
			};
			if (!wpa_dbus_dict_append_string_array(
				    &iter_dict, "key_mgmt", args,
				    sizeof(args) / sizeof(char*)))
				goto error;
		}
	} else {
		if (!wpa_dbus_dict_begin_string_array(&iter_dict, "key_mgmt",
						      &iter_dict_entry,
						      &iter_dict_val,
						      &iter_array))
			goto error;

		if (!wpa_dbus_dict_string_array_add_element(&iter_array,
							    "NONE"))
			goto error;

		if (!wpa_dbus_dict_string_array_add_element(&iter_array,
							    "IEEE8021X"))
			goto error;

		if (capa.key_mgmt & (WPA_DRIVER_CAPA_KEY_MGMT_WPA |
				     WPA_DRIVER_CAPA_KEY_MGMT_WPA2)) {
			if (!wpa_dbus_dict_string_array_add_element(
				    &iter_array, "WPA-EAP"))
				goto error;
		}

		if (capa.key_mgmt & (WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
				     WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK)) {
			if (!wpa_dbus_dict_string_array_add_element(
				    &iter_array, "WPA-PSK"))
				goto error;
		}

		if (capa.key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_WPA_NONE) {
			if (!wpa_dbus_dict_string_array_add_element(
				    &iter_array, "WPA-NONE"))
				goto error;
		}

		if (!wpa_dbus_dict_end_string_array(&iter_dict,
						    &iter_dict_entry,
						    &iter_dict_val,
						    &iter_array))
			goto error;
	}

	/***** WPA protocol */
	if (res < 0) {
		if (!strict) {
			const char *args[] = { "RSN", "WPA" };
			if (!wpa_dbus_dict_append_string_array(
				    &iter_dict, "proto", args,
				    sizeof(args) / sizeof(char*)))
				goto error;
		}
	} else {
		if (!wpa_dbus_dict_begin_string_array(&iter_dict, "proto",
						      &iter_dict_entry,
						      &iter_dict_val,
						      &iter_array))
			goto error;

		if (capa.key_mgmt & (WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
				     WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK)) {
			if (!wpa_dbus_dict_string_array_add_element(
				    &iter_array, "RSN"))
				goto error;
		}

		if (capa.key_mgmt & (WPA_DRIVER_CAPA_KEY_MGMT_WPA |
				     WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK)) {
			if (!wpa_dbus_dict_string_array_add_element(
				    &iter_array, "WPA"))
				goto error;
		}

		if (!wpa_dbus_dict_end_string_array(&iter_dict,
						    &iter_dict_entry,
						    &iter_dict_val,
						    &iter_array))
			goto error;
	}

	/***** auth alg */
	if (res < 0) {
		if (!strict) {
			const char *args[] = { "OPEN", "SHARED", "LEAP" };
			if (!wpa_dbus_dict_append_string_array(
				    &iter_dict, "auth_alg", args,
				    sizeof(args) / sizeof(char*)))
				goto error;
		}
	} else {
		if (!wpa_dbus_dict_begin_string_array(&iter_dict, "auth_alg",
						      &iter_dict_entry,
						      &iter_dict_val,
						      &iter_array))
			goto error;

		if (capa.auth & (WPA_DRIVER_AUTH_OPEN)) {
			if (!wpa_dbus_dict_string_array_add_element(
				    &iter_array, "OPEN"))
				goto error;
		}

		if (capa.auth & (WPA_DRIVER_AUTH_SHARED)) {
			if (!wpa_dbus_dict_string_array_add_element(
				    &iter_array, "SHARED"))
				goto error;
		}

		if (capa.auth & (WPA_DRIVER_AUTH_LEAP)) {
			if (!wpa_dbus_dict_string_array_add_element(
				    &iter_array, "LEAP"))
				goto error;
		}

		if (!wpa_dbus_dict_end_string_array(&iter_dict,
						    &iter_dict_entry,
						    &iter_dict_val,
						    &iter_array))
			goto error;
	}

	if (!wpa_dbus_dict_close_write(&iter, &iter_dict))
		goto error;

	return reply;

error:
	if (reply)
		dbus_message_unref(reply);
	return dbus_message_new_error(message, WPAS_ERROR_INTERNAL_ERROR,
				      "an internal error occurred returning "
				      "interface capabilities.");
}


/**
 * wpas_dbus_iface_add_network - Add a new configured network
 * @message: Pointer to incoming dbus message
 * @wpa_s: wpa_supplicant structure for a network interface
 * Returns: A dbus message containing the object path of the new network
 *
 * Handler function for "addNetwork" method call of a network interface.
 */
DBusMessage * wpas_dbus_iface_add_network(DBusMessage *message,
					  struct wpa_supplicant *wpa_s)
{
	DBusMessage *reply = NULL;
	struct wpa_ssid *ssid;
	char *path = NULL;

	path = wpa_zalloc(WPAS_DBUS_OBJECT_PATH_MAX);
	if (path == NULL) {
		perror("wpas_dbus_iface_scan_results[dbus]: out of "
		       "memory.");
		wpa_printf(MSG_ERROR, "dbus control interface: not "
			   "enough memory to send scan results "
			   "signal.");
		goto out;
	}

	ssid = wpa_config_add_network(wpa_s->conf);
	if (ssid == NULL) {
		reply = dbus_message_new_error(message,
					       WPAS_ERROR_ADD_NETWORK_ERROR,
					       "wpa_supplicant could not add "
					       "a network on this interface.");
		goto out;
	}
	ssid->disabled = 1;
	wpa_config_set_network_defaults(ssid);

	/* Construct the object path for this network. */
	snprintf(path, WPAS_DBUS_OBJECT_PATH_MAX,
		 "%s/" WPAS_DBUS_NETWORKS_PART "/%d",
		 wpa_supplicant_get_dbus_path(wpa_s),
		 ssid->id);

	reply = dbus_message_new_method_return(message);
	dbus_message_append_args(reply, DBUS_TYPE_OBJECT_PATH,
				 &path, DBUS_TYPE_INVALID);

out:
	free(path);
	return reply;
}


/**
 * wpas_dbus_iface_remove_network - Remove a configured network
 * @message: Pointer to incoming dbus message
 * @wpa_s: wpa_supplicant structure for a network interface
 * Returns: A dbus message containing a UINT32 indicating success (1) or
 *          failure (0)
 *
 * Handler function for "removeNetwork" method call of a network interface.
 */
DBusMessage * wpas_dbus_iface_remove_network(DBusMessage *message,
					     struct wpa_supplicant *wpa_s)
{
	DBusMessage *reply = NULL;
	const char *op;
	char *iface = NULL, *net_id = NULL;
	int id;
	struct wpa_ssid *ssid;

	if (!dbus_message_get_args(message, NULL,
	                           DBUS_TYPE_OBJECT_PATH, &op,
	                           DBUS_TYPE_INVALID)) {
		reply = wpas_dbus_new_invalid_opts_error(message, NULL);
		goto out;
	}

	/* Extract the network ID */
	iface = wpas_dbus_decompose_object_path(op, &net_id, NULL);
	if (iface == NULL) {
		reply = wpas_dbus_new_invalid_network_error(message);
		goto out;
	}
	/* Ensure the network is actually a child of this interface */
	if (strcmp(iface, wpa_supplicant_get_dbus_path(wpa_s)) != 0) {
		reply = wpas_dbus_new_invalid_network_error(message);
		goto out;
	}

	id = strtoul(net_id, NULL, 10);
	ssid = wpa_config_get_network(wpa_s->conf, id);
	if (ssid == NULL) {
		reply = wpas_dbus_new_invalid_network_error(message);
		goto out;
	}

	if (wpa_config_remove_network(wpa_s->conf, id) < 0) {
		reply = dbus_message_new_error(message,
					       WPAS_ERROR_REMOVE_NETWORK_ERROR,
					       "error removing the specified "
					       "on this interface.");
		goto out;
	}

	if (ssid == wpa_s->current_ssid)
		wpa_supplicant_disassociate(wpa_s, REASON_DEAUTH_LEAVING);
	reply = wpas_dbus_new_success_reply(message);

out:
	free(iface);
	free(net_id);
	return reply;
}


static const char *dont_quote[] = {
	"key_mgmt", "proto", "pairwise", "auth_alg", "group", "eap",
	"opensc_engine_path", "pkcs11_engine_path", "pkcs11_module_path",
	"bssid", NULL
};

static dbus_bool_t should_quote_opt(const char *key)
{
	int i = 0;
	while (dont_quote[i] != NULL) {
		if (strcmp(key, dont_quote[i]) == 0)
			return FALSE;
		i++;
	}
	return TRUE;
}

/**
 * wpas_dbus_iface_set_network - Set options for a configured network
 * @message: Pointer to incoming dbus message
 * @wpa_s: wpa_supplicant structure for a network interface
 * @ssid: wpa_ssid structure for a configured network
 * Returns: a dbus message containing a UINT32 indicating success (1) or
 *          failure (0)
 *
 * Handler function for "set" method call of a configured network.
 */
DBusMessage * wpas_dbus_iface_set_network(DBusMessage *message,
					  struct wpa_supplicant *wpa_s,
					  struct wpa_ssid *ssid)
{
	DBusMessage *reply = NULL;