hostap/wpa_supplicant/dbus/dbus_new_handlers_wps.c

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/*
* WPA Supplicant / dbus-based control interface (WPS)
* 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 "includes.h"
#include "common.h"
#include "../config.h"
#include "../wpa_supplicant_i.h"
#include "../wps_supplicant.h"
#include "dbus_new_helpers.h"
#include "dbus_new.h"
#include "dbus_new_handlers.h"
#include "dbus_dict_helpers.h"
/**
* wpas_dbus_handler_wps_start - Start WPS configuration
* @message: Pointer to incoming dbus message
* @wpa_s: %wpa_supplicant data structure
* Returns: DBus message dictionary on success or DBus error on failure
*
* Handler for "Start" method call. DBus dictionary argument contains
* information about role (enrollee or registrar), authorization method
* (pin or push button) and optionally pin and bssid. Returned message
* has a dictionary argument which may contain newly generated pin (optional).
*/
DBusMessage * wpas_dbus_handler_wps_start(DBusMessage *message,
struct wpa_supplicant *wpa_s)
{
DBusMessage * reply = NULL;
DBusMessageIter iter, dict_iter, entry_iter, variant_iter, array_iter;
char *key, *val;
int role = 0; /* 0 - not set, 1 - enrollee, 2 - registrar */
int type = 0; /* 0 - not set, 1 - pin, 2 - pbc */
u8 *bssid = NULL;
char *pin = NULL, npin[9] = { '\0' };
int len, ret;
dbus_message_iter_init(message, &iter);
dbus_message_iter_recurse(&iter, &dict_iter);
while (dbus_message_iter_get_arg_type(&dict_iter) ==
DBUS_TYPE_DICT_ENTRY) {
dbus_message_iter_recurse(&dict_iter, &entry_iter);
dbus_message_iter_get_basic(&entry_iter, &key);
dbus_message_iter_next(&entry_iter);
if (os_strcmp(key, "Role") == 0) {
dbus_message_iter_recurse(&entry_iter, &variant_iter);
if (dbus_message_iter_get_arg_type(&variant_iter) !=
DBUS_TYPE_STRING) {
wpa_printf(MSG_DEBUG,
"wpas_dbus_handler_wps_start"
"[dbus]: "
"wrong Role type. string required");
reply = wpas_dbus_error_invald_args(
message, "Role must be a string");
goto out;
}
dbus_message_iter_get_basic(&variant_iter, &val);
if (os_strcmp(val, "enrollee") == 0)
role = 1;
else if (os_strcmp(val, "registrar") == 0)
role = 2;
else {
wpa_printf(MSG_DEBUG,
"wpas_dbus_handler_wps_start[dbus]: "
"unknown role %s", val);
reply = wpas_dbus_error_invald_args(message, val);
goto out;
}
} else if (strcmp(key, "Type") == 0) {
dbus_message_iter_recurse(&entry_iter, &variant_iter);
if (dbus_message_iter_get_arg_type(&variant_iter) !=
DBUS_TYPE_STRING) {
wpa_printf(MSG_DEBUG,
"wpas_dbus_handler_wps_start[dbus]: "
"wrong Type type. string required");
reply = wpas_dbus_error_invald_args(
message, "Type must be a string");
goto out;
}
dbus_message_iter_get_basic(&variant_iter, &val);
if (os_strcmp(val, "pin") == 0)
type = 1;
else if (os_strcmp(val, "pbc") == 0)
type = 2;
else {
wpa_printf(MSG_DEBUG,
"wpas_dbus_handler_wps_start[dbus]: "
"unknown type %s", val);
reply = wpas_dbus_error_invald_args(message,
val);
goto out;
}
} else if (strcmp(key, "Bssid") == 0) {
dbus_message_iter_recurse(&entry_iter, &variant_iter);
if (dbus_message_iter_get_arg_type(&variant_iter) !=
DBUS_TYPE_ARRAY ||
dbus_message_iter_get_element_type(&variant_iter) !=
DBUS_TYPE_ARRAY) {
wpa_printf(MSG_DEBUG,
"wpas_dbus_handler_wps_start[dbus]: "
"wrong Bssid type. byte array required");
reply = wpas_dbus_error_invald_args(
message, "Bssid must be a byte array");
goto out;
}
dbus_message_iter_recurse(&variant_iter, &array_iter);
dbus_message_iter_get_fixed_array(&array_iter, &bssid,
&len);
if (len != ETH_ALEN) {
wpa_printf(MSG_DEBUG,
"wpas_dbus_handler_wps_start[dbus]: "
"wrong Bssid length %d", len);
reply = wpas_dbus_error_invald_args(
message, "Bssid is wrong length");
goto out;
}
}
else if (os_strcmp(key, "Pin") == 0) {
dbus_message_iter_recurse(&entry_iter, &variant_iter);
if (dbus_message_iter_get_arg_type(&variant_iter) !=
DBUS_TYPE_STRING) {
wpa_printf(MSG_DEBUG,
"wpas_dbus_handler_wps_start[dbus]: "
"wrong Pin type. string required");
reply = wpas_dbus_error_invald_args(
message, "Pin must be a string");
goto out;
}
dbus_message_iter_get_basic(&variant_iter, &pin);
} else {
wpa_printf(MSG_DEBUG,
"wpas_dbus_handler_wps_start[dbus]: "
"unknown key %s", key);
reply = wpas_dbus_error_invald_args(message, key);
goto out;
}
dbus_message_iter_next(&dict_iter);
}
if (role == 0) {
wpa_printf(MSG_DEBUG, "wpas_dbus_handler_wps_start[dbus]: "
"Role not specified");
reply = wpas_dbus_error_invald_args(message,
"Role not specified");
goto out;
}
else if (role == 1 && type == 0) {
wpa_printf(MSG_DEBUG, "wpas_dbus_handler_wps_start[dbus]: "
"Type not specified");
reply = wpas_dbus_error_invald_args(message,
"Type not specified");
goto out;
}
else if (role == 2 && pin == NULL) {
wpa_printf(MSG_DEBUG, "wpas_dbus_handler_wps_start[dbus]: "
"Pin required for registrar role.");
reply = wpas_dbus_error_invald_args(
message, "Pin required for registrar role.");
goto out;
}
if (role == 2)
ret = wpas_wps_start_reg(wpa_s, bssid, pin, NULL);
else if (type == 1) {
ret = wpas_wps_start_pin(wpa_s, bssid, pin);
if (ret > 0)
os_snprintf(npin, sizeof(npin), "%08d", ret);
} else
ret = wpas_wps_start_pbc(wpa_s, bssid);
if (ret < 0) {
wpa_printf(MSG_DEBUG, "wpas_dbus_handler_wps_start[dbus]: "
"wpas_wps_failed in role %s and key %s.",
(role == 1 ? "enrollee" : "registrar"),
(type == 0 ? "" : (type == 1 ? "pin" : "pbc")));
reply = wpas_dbus_error_unknown_error(message,
"wps start failed");
goto out;
}
reply = dbus_message_new_method_return(message);
if (!reply) {
perror("wpas_dbus_handler_wps_start[dbus]: out of memory "
"when creating reply");
reply = dbus_message_new_error(message, DBUS_ERROR_NO_MEMORY,
NULL);
goto out;
}
dbus_message_iter_init_append(reply, &iter);
if (!wpa_dbus_dict_open_write(&iter, &dict_iter)) {
perror("wpas_dbus_handler_wps_start[dbus]: out of memory "
"when opening dictionary");
dbus_message_unref(reply);
reply = dbus_message_new_error(message, DBUS_ERROR_NO_MEMORY,
NULL);
goto out;
}
if (os_strlen(npin) > 0) {
if (!wpa_dbus_dict_append_string(&dict_iter, "Pin", npin)) {
perror("wpas_dbus_handler_wps_start[dbus]: "
"out of memory when appending pin");
dbus_message_unref(reply);
reply = dbus_message_new_error(message,
DBUS_ERROR_NO_MEMORY,
NULL);
goto out;
}
}
if (!wpa_dbus_dict_close_write(&iter, &dict_iter)) {
perror("wpas_dbus_handler_wps_start[dbus]: out of memory "
"when closing dictionary");
dbus_message_unref(reply);
reply = dbus_message_new_error(message, DBUS_ERROR_NO_MEMORY,
NULL);
goto out;
}
out:
return reply;
}
/**
* wpas_dbus_getter_process_credentials - Check if credentials are processed
* @message: Pointer to incoming dbus message
* @wpa_s: %wpa_supplicant data structure
* Returns: DBus message with a boolean on success or DBus error on failure
*
* Getter for "ProcessCredentials" property. Returns returned boolean will be
* true if wps_cred_processing configuration field is not equal to 1 or false
* if otherwise.
*/
DBusMessage * wpas_dbus_getter_process_credentials(
DBusMessage *message, struct wpa_supplicant *wpa_s)
{
DBusMessage *reply = NULL;
DBusMessageIter iter, variant_iter;
dbus_bool_t process = (wpa_s->conf->wps_cred_processing != 1);
if (message == NULL)
reply = dbus_message_new(DBUS_MESSAGE_TYPE_SIGNAL);
else
reply = dbus_message_new_method_return(message);
if (reply != NULL) {
dbus_message_iter_init_append(reply, &iter);
if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_VARIANT,
"b", &variant_iter) ||
!dbus_message_iter_append_basic(&variant_iter,
DBUS_TYPE_BOOLEAN,
&process) ||
!dbus_message_iter_close_container(&iter, &variant_iter)) {
perror("wpas_dbus_getter_process_credentials[dbus]: "
"out of memory to put value into message.");
dbus_message_unref(reply);
reply = dbus_message_new_error(message,
DBUS_ERROR_NO_MEMORY,
NULL);
}
} else {
perror("wpas_dbus_getter_process_credentials[dbus]: out of "
"memory to create reply message.");
reply = dbus_message_new_error(message, DBUS_ERROR_NO_MEMORY,
NULL);
}
return reply;
}
/**
* wpas_dbus_setter_process_credentials - Set credentials_processed conf param
* @message: Pointer to incoming dbus message
* @wpa_s: %wpa_supplicant data structure
* Returns: NULL on success or DBus error on failure
*
* Setter for "ProcessCredentials" property. Sets credentials_processed on 2
* if boolean argument is true or on 1 if otherwise.
*/
DBusMessage * wpas_dbus_setter_process_credentials(
DBusMessage *message, struct wpa_supplicant *wpa_s)
{
DBusMessage *reply = NULL;
DBusMessageIter iter, variant_iter;
dbus_bool_t process_credentials, old_pc;
if (!dbus_message_iter_init(message, &iter)) {
perror("wpas_dbus_getter_ap_scan[dbus]: out of "
"memory to return scanning state.");
reply = dbus_message_new_error(message, DBUS_ERROR_NO_MEMORY,
NULL);
goto out;
}
/* omit first and second argument and get value from third*/
dbus_message_iter_next(&iter);
dbus_message_iter_next(&iter);
dbus_message_iter_recurse(&iter, &variant_iter);
if (dbus_message_iter_get_arg_type(&variant_iter) != DBUS_TYPE_BOOLEAN)
{
reply = wpas_dbus_error_invald_args(message,
"BOOLEAN required");
goto out;
}
dbus_message_iter_get_basic(&variant_iter, &process_credentials);
old_pc = (wpa_s->conf->wps_cred_processing != 1);
wpa_s->conf->wps_cred_processing = (process_credentials ? 2 : 1);
if ((wpa_s->conf->wps_cred_processing != 1) != old_pc)
wpa_dbus_signal_property_changed(
wpa_s->global->dbus_new_ctrl_iface,
(WPADBusPropertyAccessor)
wpas_dbus_getter_process_credentials,
wpa_s, wpas_dbus_get_path(wpa_s),
WPAS_DBUS_NEW_IFACE_WPS,
"ProcessCredentials");
out:
return reply;
}