/*
* 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 software may be distributed under the terms of the BSD license.
* See README for more details.
*/
#include "includes.h"
#include "common.h"
#include "../config.h"
#include "../wpa_supplicant_i.h"
#include "../wps_supplicant.h"
#include "../driver_i.h"
#include "../ap.h"
#include "dbus_new_helpers.h"
#include "dbus_new.h"
#include "dbus_new_handlers.h"
#include "dbus_dict_helpers.h"
struct wps_start_params {
int role; /* 0 - not set, 1 - enrollee, 2 - registrar */
int type; /* 0 - not set, 1 - pin, 2 - pbc */
u8 *bssid;
char *pin;
u8 *p2p_dev_addr;
};
static int wpas_dbus_handler_wps_role(DBusMessage *message,
DBusMessageIter *entry_iter,
struct wps_start_params *params,
DBusMessage **reply)
{
DBusMessageIter variant_iter;
char *val;
dbus_message_iter_recurse(entry_iter, &variant_iter);
if (dbus_message_iter_get_arg_type(&variant_iter) !=
DBUS_TYPE_STRING) {
wpa_printf(MSG_DEBUG,
"dbus: WPS.Start - Wrong Role type, string required");
*reply = wpas_dbus_error_invalid_args(message,
"Role must be a string");
return -1;
}
dbus_message_iter_get_basic(&variant_iter, &val);
if (os_strcmp(val, "enrollee") == 0)
params->role = 1;
else if (os_strcmp(val, "registrar") == 0)
params->role = 2;
else {
wpa_printf(MSG_DEBUG, "dbus: WPS.Start - Unknown role %s", val);
*reply = wpas_dbus_error_invalid_args(message, val);
return -1;
}
return 0;
}
static int wpas_dbus_handler_wps_type(DBusMessage *message,
DBusMessageIter *entry_iter,
struct wps_start_params *params,
DBusMessage **reply)
{
DBusMessageIter variant_iter;
char *val;
dbus_message_iter_recurse(entry_iter, &variant_iter);
if (dbus_message_iter_get_arg_type(&variant_iter) != DBUS_TYPE_STRING) {
wpa_printf(MSG_DEBUG,
"dbus: WPS.Start - Wrong Type type, string required");
*reply = wpas_dbus_error_invalid_args(message,
"Type must be a string");
return -1;
}
dbus_message_iter_get_basic(&variant_iter, &val);
if (os_strcmp(val, "pin") == 0)
params->type = 1;
else if (os_strcmp(val, "pbc") == 0)
params->type = 2;
else {
wpa_printf(MSG_DEBUG, "dbus: WPS.Start - Unknown type %s",
val);
*reply = wpas_dbus_error_invalid_args(message, val);
return -1;
}
return 0;
}
static int wpas_dbus_handler_wps_bssid(DBusMessage *message,
DBusMessageIter *entry_iter,
struct wps_start_params *params,
DBusMessage **reply)
{
DBusMessageIter variant_iter, array_iter;
int len;
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_BYTE) {
wpa_printf(MSG_DEBUG,
"dbus: WPS.Start - Wrong Bssid type, byte array required");
*reply = wpas_dbus_error_invalid_args(
message, "Bssid must be a byte array");
return -1;
}
dbus_message_iter_recurse(&variant_iter, &array_iter);
dbus_message_iter_get_fixed_array(&array_iter, ¶ms->bssid, &len);
if (len != ETH_ALEN) {
wpa_printf(MSG_DEBUG, "dbus: WPS.Start - Wrong Bssid length %d",
len);
*reply = wpas_dbus_error_invalid_args(message,
"Bssid is wrong length");
return -1;
}
return 0;
}
static int wpas_dbus_handler_wps_pin(DBusMessage *message,
DBusMessageIter *entry_iter,
struct wps_start_params *params,
DBusMessage **reply)
{
DBusMessageIter variant_iter;
dbus_message_iter_recurse(entry_iter, &variant_iter);
if (dbus_message_iter_get_arg_type(&variant_iter) != DBUS_TYPE_STRING) {
wpa_printf(MSG_DEBUG,
"dbus: WPS.Start - Wrong Pin type, string required");
*reply = wpas_dbus_error_invalid_args(message,
"Pin must be a string");
return -1;
}
dbus_message_iter_get_basic(&variant_iter, ¶ms->pin);
return 0;
}
#ifdef CONFIG_P2P
static int wpas_dbus_handler_wps_p2p_dev_addr(DBusMessage *message,
DBusMessageIter *entry_iter,
struct wps_start_params *params,
DBusMessage **reply)
{
DBusMessageIter variant_iter, array_iter;
int len;
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_BYTE) {
wpa_printf(MSG_DEBUG,
"dbus: WPS.Start - Wrong P2PDeviceAddress type, byte array required");
*reply = wpas_dbus_error_invalid_args(
message, "P2PDeviceAddress must be a byte array");
return -1;
}
dbus_message_iter_recurse(&variant_iter, &array_iter);
dbus_message_iter_get_fixed_array(&array_iter, ¶ms->p2p_dev_addr,
&len);
if (len != ETH_ALEN) {
wpa_printf(MSG_DEBUG,
"dbus: WPS.Start - Wrong P2PDeviceAddress length %d",
len);
*reply = wpas_dbus_error_invalid_args(
message, "P2PDeviceAddress has wrong length");
return -1;
}
return 0;
}
#endif /* CONFIG_P2P */
static int wpas_dbus_handler_wps_start_entry(DBusMessage *message, char *key,
DBusMessageIter *entry_iter,
struct wps_start_params *params,
DBusMessage **reply)
{
if (os_strcmp(key, "Role") == 0)
return wpas_dbus_handler_wps_role(message, entry_iter,
params, reply);
else if (os_strcmp(key, "Type") == 0)
return wpas_dbus_handler_wps_type(message, entry_iter,
params, reply);
else if (os_strcmp(key, "Bssid") == 0)
return wpas_dbus_handler_wps_bssid(message, entry_iter,
params, reply);
else if (os_strcmp(key, "Pin") == 0)
return wpas_dbus_handler_wps_pin(message, entry_iter,
params, reply);
#ifdef CONFIG_P2P
else if (os_strcmp(key, "P2PDeviceAddress") == 0)
return wpas_dbus_handler_wps_p2p_dev_addr(message, entry_iter,
params, reply);
#endif /* CONFIG_P2P */
wpa_printf(MSG_DEBUG, "dbus: WPS.Start - unknown key %s", key);
*reply = wpas_dbus_error_invalid_args(message, key);
return -1;
}
/**
* 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;
struct wps_start_params params;
char *key;
char npin[9] = { '\0' };
int ret;
os_memset(¶ms, 0, sizeof(params));
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 (wpas_dbus_handler_wps_start_entry(message, key,
&entry_iter,
¶ms, &reply))
return reply;
dbus_message_iter_next(&dict_iter);
}
#ifdef CONFIG_AP
if (wpa_s->ap_iface && params.type == 1) {
if (params.pin == NULL) {
wpa_printf(MSG_DEBUG,
"dbus: WPS.Start - Pin required for registrar role");
return wpas_dbus_error_invalid_args(
message, "Pin required for registrar role.");
}
ret = wpa_supplicant_ap_wps_pin(wpa_s,
params.bssid,
params.pin,
npin, sizeof(npin), 0);
} else if (wpa_s->ap_iface) {
ret = wpa_supplicant_ap_wps_pbc(wpa_s,
params.bssid,
params.p2p_dev_addr);
} else
#endif /* CONFIG_AP */
if (params.role == 0) {
wpa_printf(MSG_DEBUG, "dbus: WPS.Start - Role not specified");
return wpas_dbus_error_invalid_args(message,
"Role not specified");
} else if (params.role == 2) {
if (params.pin == NULL) {
wpa_printf(MSG_DEBUG,
"dbus: WPS.Start - Pin required for registrar role");
return wpas_dbus_error_invalid_args(
message, "Pin required for registrar role.");
}
ret = wpas_wps_start_reg(wpa_s, params.bssid, params.pin,
NULL);
} else if (params.type == 0) {
wpa_printf(MSG_DEBUG, "dbus: WPS.Start - Type not specified");
return wpas_dbus_error_invalid_args(message,
"Type not specified");
} else if (params.type == 1) {
ret = wpas_wps_start_pin(wpa_s, params.bssid,
params.pin, 0,
DEV_PW_DEFAULT);
if (ret > 0)
os_snprintf(npin, sizeof(npin), "%08d", ret);
} else {
ret = wpas_wps_start_pbc(wpa_s, params.bssid, 0);
}
if (ret < 0) {
wpa_printf(MSG_DEBUG,
"dbus: WPS.Start wpas_wps_failed in role %s and key %s",
(params.role == 1 ? "enrollee" : "registrar"),
(params.type == 0 ? "" :
(params.type == 1 ? "pin" : "pbc")));
return wpas_dbus_error_unknown_error(message,
"WPS start failed");
}
reply = dbus_message_new_method_return(message);
if (!reply)
return wpas_dbus_error_no_memory(message);
dbus_message_iter_init_append(reply, &iter);
if (!wpa_dbus_dict_open_write(&iter, &dict_iter) ||
(os_strlen(npin) > 0 &&
!wpa_dbus_dict_append_string(&dict_iter, "Pin", npin)) ||
!wpa_dbus_dict_close_write(&iter, &dict_iter)) {
dbus_message_unref(reply);
return wpas_dbus_error_no_memory(message);
}
return reply;
}
/**
* wpas_dbus_handler_wps_cancel - Cancel ongoing WPS configuration
* @message: Pointer to incoming dbus message
* @wpa_s: %wpa_supplicant data structure
* Returns: NULL on success or DBus error on failure
*
* Handler for "Cancel" method call. Returns NULL if WPS cancel successfull
* or DBus error on WPS cancel failure
*/
DBusMessage * wpas_dbus_handler_wps_cancel(DBusMessage *message,
struct wpa_supplicant *wpa_s)
{
if (wpas_wps_cancel(wpa_s))
return wpas_dbus_error_unknown_error(message,
"WPS cancel failed");
return NULL;
}
/**
* wpas_dbus_getter_process_credentials - Check if credentials are processed
* @message: Pointer to incoming dbus message
* @wpa_s: %wpa_supplicant data structure
* Returns: TRUE on success, FALSE 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.
*/
dbus_bool_t wpas_dbus_getter_process_credentials(DBusMessageIter *iter,
DBusError *error,
void *user_data)
{
struct wpa_supplicant *wpa_s = user_data;
dbus_bool_t process = wpa_s->conf->wps_cred_processing != 1;
return wpas_dbus_simple_property_getter(iter, DBUS_TYPE_BOOLEAN,
&process, error);
}
/**
* wpas_dbus_setter_process_credentials - Set credentials_processed conf param
* @iter: Pointer to incoming dbus message iter
* @error: Location to store error on failure
* @user_data: Function specific data
* Returns: TRUE on success, FALSE on failure
*
* Setter for "ProcessCredentials" property. Sets credentials_processed on 2
* if boolean argument is true or on 1 if otherwise.
*/
dbus_bool_t wpas_dbus_setter_process_credentials(DBusMessageIter *iter,
DBusError *error,
void *user_data)
{
struct wpa_supplicant *wpa_s = user_data;
dbus_bool_t process_credentials, old_pc;
if (!wpa_s->dbus_new_path)
return FALSE;
if (!wpas_dbus_simple_property_setter(iter, error, DBUS_TYPE_BOOLEAN,
&process_credentials))
return FALSE;
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_mark_property_changed(wpa_s->global->dbus,
wpa_s->dbus_new_path,
WPAS_DBUS_NEW_IFACE_WPS,
"ProcessCredentials");
return TRUE;
}
/**
* wpas_dbus_getter_config_methods - Get current WPS configuration methods
* @iter: Pointer to incoming dbus message iter
* @error: Location to store error on failure
* @user_data: Function specific data
* Returns: TRUE on success, FALSE on failure
*
* Getter for "ConfigMethods" property. Returned boolean will be true if
* providing the relevant string worked, or false otherwise.
*/
dbus_bool_t wpas_dbus_getter_config_methods(DBusMessageIter *iter,
DBusError *error,
void *user_data)
{
struct wpa_supplicant *wpa_s = user_data;
char *methods = wpa_s->conf->config_methods;
if (methods == NULL)
methods = "";
return wpas_dbus_simple_property_getter(iter, DBUS_TYPE_STRING,
&methods, error);
}
/**
* wpas_dbus_setter_config_methods - Set WPS configuration methods
* @iter: Pointer to incoming dbus message iter
* @error: Location to store error on failure
* @user_data: Function specific data
* Returns: TRUE on success, FALSE on failure
*
* Setter for "ConfigMethods" property. Sets the methods string, apply such
* change and returns true on success. Returns false otherwise.
*/
dbus_bool_t wpas_dbus_setter_config_methods(DBusMessageIter *iter,
DBusError *error,
void *user_data)
{
struct wpa_supplicant *wpa_s = user_data;
char *methods, *new_methods;
if (!wpas_dbus_simple_property_setter(iter, error, DBUS_TYPE_STRING,
&methods))
return FALSE;
new_methods = os_strdup(methods);
if (!new_methods)
return FALSE;
os_free(wpa_s->conf->config_methods);
wpa_s->conf->config_methods = new_methods;
wpa_s->conf->changed_parameters |= CFG_CHANGED_CONFIG_METHODS;
wpa_supplicant_update_config(wpa_s);
return TRUE;
}