296 lines
9.1 KiB
C
296 lines
9.1 KiB
C
/*
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* WPA Supplicant / dbus-based control interface (WPS)
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* Copyright (c) 2006, Dan Williams <dcbw@redhat.com> and Red Hat, Inc.
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* Copyright (c) 2009, Witold Sowa <witold.sowa@gmail.com>
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*
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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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*
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* Alternatively, this software may be distributed under the terms of BSD
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* license.
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*
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* See README and COPYING for more details.
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*/
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#include "includes.h"
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#include "common.h"
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#include "../config.h"
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#include "../wpa_supplicant_i.h"
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#include "../wps_supplicant.h"
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#include "dbus_new_helpers.h"
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#include "dbus_new.h"
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#include "dbus_new_handlers.h"
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#include "dbus_dict_helpers.h"
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/**
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* wpas_dbus_handler_wps_start - Start WPS configuration
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* @message: Pointer to incoming dbus message
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* @wpa_s: %wpa_supplicant data structure
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* Returns: DBus message dictionary on success or DBus error on failure
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*
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* Handler for "Start" method call. DBus dictionary argument contains
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* information about role (enrollee or registrar), authorization method
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* (pin or push button) and optionally pin and bssid. Returned message
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* has a dictionary argument which may contain newly generated pin (optional).
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*/
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DBusMessage * wpas_dbus_handler_wps_start(DBusMessage *message,
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struct wpa_supplicant *wpa_s)
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{
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DBusMessage * reply = NULL;
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DBusMessageIter iter, dict_iter, entry_iter, variant_iter, array_iter;
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char *key, *val;
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int role = 0; /* 0 - not set, 1 - enrollee, 2 - registrar */
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int type = 0; /* 0 - not set, 1 - pin, 2 - pbc */
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u8 *bssid = NULL;
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char *pin = NULL, npin[9] = { '\0' };
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int len, ret;
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dbus_message_iter_init(message, &iter);
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dbus_message_iter_recurse(&iter, &dict_iter);
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while (dbus_message_iter_get_arg_type(&dict_iter) ==
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DBUS_TYPE_DICT_ENTRY) {
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dbus_message_iter_recurse(&dict_iter, &entry_iter);
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dbus_message_iter_get_basic(&entry_iter, &key);
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dbus_message_iter_next(&entry_iter);
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if (os_strcmp(key, "Role") == 0) {
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dbus_message_iter_recurse(&entry_iter, &variant_iter);
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if (dbus_message_iter_get_arg_type(&variant_iter) !=
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DBUS_TYPE_STRING) {
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wpa_printf(MSG_DEBUG,
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"wpas_dbus_handler_wps_start"
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"[dbus]: "
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"wrong Role type. string required");
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reply = wpas_dbus_error_invald_args(
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message, "Role must be a string");
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goto out;
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}
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dbus_message_iter_get_basic(&variant_iter, &val);
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if (os_strcmp(val, "enrollee") == 0)
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role = 1;
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else if (os_strcmp(val, "registrar") == 0)
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role = 2;
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else {
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wpa_printf(MSG_DEBUG,
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"wpas_dbus_handler_wps_start[dbus]: "
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"unknown role %s", val);
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reply = wpas_dbus_error_invald_args(message, val);
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goto out;
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}
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} else if (strcmp(key, "Type") == 0) {
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dbus_message_iter_recurse(&entry_iter, &variant_iter);
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if (dbus_message_iter_get_arg_type(&variant_iter) !=
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DBUS_TYPE_STRING) {
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wpa_printf(MSG_DEBUG,
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"wpas_dbus_handler_wps_start[dbus]: "
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"wrong Type type. string required");
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reply = wpas_dbus_error_invald_args(
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message, "Type must be a string");
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goto out;
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}
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dbus_message_iter_get_basic(&variant_iter, &val);
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if (os_strcmp(val, "pin") == 0)
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type = 1;
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else if (os_strcmp(val, "pbc") == 0)
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type = 2;
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else {
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wpa_printf(MSG_DEBUG,
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"wpas_dbus_handler_wps_start[dbus]: "
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"unknown type %s", val);
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reply = wpas_dbus_error_invald_args(message,
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val);
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goto out;
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}
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} else if (strcmp(key, "Bssid") == 0) {
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dbus_message_iter_recurse(&entry_iter, &variant_iter);
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if (dbus_message_iter_get_arg_type(&variant_iter) !=
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DBUS_TYPE_ARRAY ||
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dbus_message_iter_get_element_type(&variant_iter) !=
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DBUS_TYPE_ARRAY) {
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wpa_printf(MSG_DEBUG,
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"wpas_dbus_handler_wps_start[dbus]: "
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"wrong Bssid type. byte array required");
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reply = wpas_dbus_error_invald_args(
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message, "Bssid must be a byte array");
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goto out;
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}
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dbus_message_iter_recurse(&variant_iter, &array_iter);
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dbus_message_iter_get_fixed_array(&array_iter, &bssid,
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&len);
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if (len != ETH_ALEN) {
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wpa_printf(MSG_DEBUG,
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"wpas_dbus_handler_wps_start[dbus]: "
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"wrong Bssid length %d", len);
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reply = wpas_dbus_error_invald_args(
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message, "Bssid is wrong length");
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goto out;
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}
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}
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else if (os_strcmp(key, "Pin") == 0) {
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dbus_message_iter_recurse(&entry_iter, &variant_iter);
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if (dbus_message_iter_get_arg_type(&variant_iter) !=
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DBUS_TYPE_STRING) {
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wpa_printf(MSG_DEBUG,
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"wpas_dbus_handler_wps_start[dbus]: "
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"wrong Pin type. string required");
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reply = wpas_dbus_error_invald_args(
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message, "Pin must be a string");
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goto out;
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}
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dbus_message_iter_get_basic(&variant_iter, &pin);
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} else {
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wpa_printf(MSG_DEBUG,
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"wpas_dbus_handler_wps_start[dbus]: "
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"unknown key %s", key);
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reply = wpas_dbus_error_invald_args(message, key);
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goto out;
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}
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dbus_message_iter_next(&dict_iter);
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}
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if (role == 0) {
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wpa_printf(MSG_DEBUG, "wpas_dbus_handler_wps_start[dbus]: "
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"Role not specified");
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reply = wpas_dbus_error_invald_args(message,
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"Role not specified");
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goto out;
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}
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else if (role == 1 && type == 0) {
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wpa_printf(MSG_DEBUG, "wpas_dbus_handler_wps_start[dbus]: "
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"Type not specified");
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reply = wpas_dbus_error_invald_args(message,
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"Type not specified");
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goto out;
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}
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else if (role == 2 && pin == NULL) {
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wpa_printf(MSG_DEBUG, "wpas_dbus_handler_wps_start[dbus]: "
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"Pin required for registrar role.");
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reply = wpas_dbus_error_invald_args(
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message, "Pin required for registrar role.");
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goto out;
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}
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if (role == 2)
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ret = wpas_wps_start_reg(wpa_s, bssid, pin, NULL);
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else if (type == 1) {
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ret = wpas_wps_start_pin(wpa_s, bssid, pin);
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if (ret > 0)
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os_snprintf(npin, sizeof(npin), "%08d", ret);
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} else
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ret = wpas_wps_start_pbc(wpa_s, bssid);
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if (ret < 0) {
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wpa_printf(MSG_DEBUG, "wpas_dbus_handler_wps_start[dbus]: "
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"wpas_wps_failed in role %s and key %s.",
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(role == 1 ? "enrollee" : "registrar"),
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(type == 0 ? "" : (type == 1 ? "pin" : "pbc")));
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reply = wpas_dbus_error_unknown_error(message,
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"wps start failed");
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goto out;
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}
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reply = dbus_message_new_method_return(message);
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if (!reply) {
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perror("wpas_dbus_handler_wps_start[dbus]: out of memory "
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"when creating reply");
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reply = dbus_message_new_error(message, DBUS_ERROR_NO_MEMORY,
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NULL);
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goto out;
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}
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dbus_message_iter_init_append(reply, &iter);
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if (!wpa_dbus_dict_open_write(&iter, &dict_iter)) {
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perror("wpas_dbus_handler_wps_start[dbus]: out of memory "
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"when opening dictionary");
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dbus_message_unref(reply);
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reply = dbus_message_new_error(message, DBUS_ERROR_NO_MEMORY,
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NULL);
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goto out;
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}
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if (os_strlen(npin) > 0) {
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if (!wpa_dbus_dict_append_string(&dict_iter, "Pin", npin)) {
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perror("wpas_dbus_handler_wps_start[dbus]: "
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"out of memory when appending pin");
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dbus_message_unref(reply);
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reply = dbus_message_new_error(message,
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DBUS_ERROR_NO_MEMORY,
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NULL);
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goto out;
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}
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}
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if (!wpa_dbus_dict_close_write(&iter, &dict_iter)) {
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perror("wpas_dbus_handler_wps_start[dbus]: out of memory "
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"when closing dictionary");
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dbus_message_unref(reply);
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reply = dbus_message_new_error(message, DBUS_ERROR_NO_MEMORY,
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NULL);
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goto out;
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}
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out:
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return reply;
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}
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/**
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* wpas_dbus_getter_process_credentials - Check if credentials are processed
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* @message: Pointer to incoming dbus message
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* @wpa_s: %wpa_supplicant data structure
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* Returns: DBus message with a boolean on success or DBus error on failure
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*
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* Getter for "ProcessCredentials" property. Returns returned boolean will be
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* true if wps_cred_processing configuration field is not equal to 1 or false
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* if otherwise.
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*/
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DBusMessage * wpas_dbus_getter_process_credentials(
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DBusMessage *message, struct wpa_supplicant *wpa_s)
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{
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dbus_bool_t process = (wpa_s->conf->wps_cred_processing != 1);
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return wpas_dbus_simple_property_getter(message, DBUS_TYPE_BOOLEAN,
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&process);
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}
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/**
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* wpas_dbus_setter_process_credentials - Set credentials_processed conf param
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* @message: Pointer to incoming dbus message
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* @wpa_s: %wpa_supplicant data structure
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* Returns: NULL on success or DBus error on failure
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*
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* Setter for "ProcessCredentials" property. Sets credentials_processed on 2
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* if boolean argument is true or on 1 if otherwise.
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*/
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DBusMessage * wpas_dbus_setter_process_credentials(
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DBusMessage *message, struct wpa_supplicant *wpa_s)
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{
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DBusMessage *reply = NULL;
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dbus_bool_t process_credentials, old_pc;
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reply = wpas_dbus_simple_property_setter(message, DBUS_TYPE_UINT32,
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&process_credentials);
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if (reply)
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return reply;
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old_pc = (wpa_s->conf->wps_cred_processing != 1);
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wpa_s->conf->wps_cred_processing = (process_credentials ? 2 : 1);
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if ((wpa_s->conf->wps_cred_processing != 1) != old_pc)
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wpa_dbus_signal_property_changed(
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wpa_s->global->dbus,
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(WPADBusPropertyAccessor)
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wpas_dbus_getter_process_credentials,
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wpa_s, wpas_dbus_get_path(wpa_s),
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WPAS_DBUS_NEW_IFACE_WPS,
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"ProcessCredentials");
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return NULL;
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}
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