hostap/wpa_supplicant/dbus/dbus_new_handlers_wps.c
Jouni Malinen 3c5126a41f P2P: Set Device Password ID in WPS M1/M2 per new rules
If the P2P client (WPS Enrollee) uses a PIN from the GO (Registrar),
Device Password ID in M1 & M2 is set to Registrar-specified.
2010-09-09 07:17:19 -07:00

332 lines
9.9 KiB
C

/*
* 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"
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;
};
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 - Uknown 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_ARRAY) {
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, &params->bssid, &len);
if (len != ETH_ALEN) {
wpa_printf(MSG_DEBUG, "dbus: WPS.Stsrt - 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, &params->pin);
return 0;
}
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);
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(&params, 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,
&params, &reply))
return reply;
dbus_message_iter_next(&dict_iter);
}
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 == 1 && 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.role == 2 && 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.");
}
if (params.role == 2)
ret = wpas_wps_start_reg(wpa_s, params.bssid, params.pin,
NULL);
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 dbus_message_new_error(message, DBUS_ERROR_NO_MEMORY,
NULL);
}
dbus_message_iter_init_append(reply, &iter);
if (!wpa_dbus_dict_open_write(&iter, &dict_iter)) {
dbus_message_unref(reply);
return dbus_message_new_error(message, DBUS_ERROR_NO_MEMORY,
NULL);
}
if (os_strlen(npin) > 0) {
if (!wpa_dbus_dict_append_string(&dict_iter, "Pin", npin)) {
dbus_message_unref(reply);
return dbus_message_new_error(message,
DBUS_ERROR_NO_MEMORY,
NULL);
}
}
if (!wpa_dbus_dict_close_write(&iter, &dict_iter)) {
dbus_message_unref(reply);
return dbus_message_new_error(message, DBUS_ERROR_NO_MEMORY,
NULL);
}
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)
{
dbus_bool_t process = (wpa_s->conf->wps_cred_processing != 1);
return wpas_dbus_simple_property_getter(message, DBUS_TYPE_BOOLEAN,
&process);
}
/**
* 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;
dbus_bool_t process_credentials, old_pc;
reply = wpas_dbus_simple_property_setter(message, DBUS_TYPE_BOOLEAN,
&process_credentials);
if (reply)
return reply;
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 NULL;
}