2994 lines
72 KiB
C
2994 lines
72 KiB
C
/*
|
|
*
|
|
* Wireless daemon for Linux
|
|
*
|
|
* Copyright (C) 2015-2019 Intel Corporation. All rights reserved.
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include <config.h>
|
|
#endif
|
|
|
|
#include <stdbool.h>
|
|
#include <stdarg.h>
|
|
#include <errno.h>
|
|
#include <stdio.h>
|
|
|
|
#include <ell/ell.h>
|
|
|
|
#include "src/util.h"
|
|
#include "src/ie.h"
|
|
#include "src/wscutil.h"
|
|
|
|
const unsigned char wsc_wfa_oui[3] = { 0x00, 0x37, 0x2a };
|
|
|
|
void wsc_wfa_ext_iter_init(struct wsc_wfa_ext_iter *iter,
|
|
const unsigned char *pdu, unsigned short len)
|
|
{
|
|
iter->pdu = pdu;
|
|
iter->max = len;
|
|
iter->pos = 0;
|
|
}
|
|
|
|
bool wsc_wfa_ext_iter_next(struct wsc_wfa_ext_iter *iter)
|
|
{
|
|
const unsigned char *start = iter->pdu + iter->pos;
|
|
const unsigned char *end = iter->pdu + iter->max;
|
|
unsigned char type;
|
|
unsigned char len;
|
|
|
|
if (iter->pos + 2 >= iter->max)
|
|
return false;
|
|
|
|
type = *start;
|
|
start += 1;
|
|
|
|
len = *start;
|
|
start += 1;
|
|
|
|
if (start + len > end)
|
|
return false;
|
|
|
|
iter->type = type;
|
|
iter->len = len;
|
|
iter->data = start;
|
|
|
|
iter->pos = start + len - iter->pdu;
|
|
|
|
return true;
|
|
}
|
|
|
|
void wsc_attr_iter_init(struct wsc_attr_iter *iter, const unsigned char *pdu,
|
|
unsigned int len)
|
|
{
|
|
iter->pdu = pdu;
|
|
iter->max = len;
|
|
iter->pos = 0;
|
|
}
|
|
|
|
bool wsc_attr_iter_next(struct wsc_attr_iter *iter)
|
|
{
|
|
const unsigned char *start = iter->pdu + iter->pos;
|
|
const unsigned char *end = iter->pdu + iter->max;
|
|
unsigned short type;
|
|
unsigned short len;
|
|
|
|
/* Make sure we have at least type + len fields */
|
|
if (iter->pos + 4 >= iter->max)
|
|
return false;
|
|
|
|
type = l_get_be16(start);
|
|
start += 2;
|
|
|
|
len = l_get_be16(start);
|
|
start += 2;
|
|
|
|
if (start + len > end)
|
|
return false;
|
|
|
|
iter->type = type;
|
|
iter->len = len;
|
|
iter->data = start;
|
|
|
|
iter->pos = start + len - iter->pdu;
|
|
|
|
return true;
|
|
}
|
|
|
|
bool wsc_attr_iter_recurse_wfa_ext(struct wsc_attr_iter *iter,
|
|
struct wsc_wfa_ext_iter *wfa_iter)
|
|
{
|
|
if (iter->type != WSC_ATTR_VENDOR_EXTENSION)
|
|
return false;
|
|
|
|
if (iter->len < 3)
|
|
return false;
|
|
|
|
if (memcmp(iter->data, wsc_wfa_oui, sizeof(wsc_wfa_oui)))
|
|
return false;
|
|
|
|
wsc_wfa_ext_iter_init(wfa_iter, iter->data + 3, iter->len - 3);
|
|
|
|
return true;
|
|
}
|
|
|
|
typedef bool (*attr_handler)(struct wsc_attr_iter *, void *);
|
|
|
|
static bool extract_uint8(struct wsc_attr_iter *iter, void *data)
|
|
{
|
|
uint8_t *to = data;
|
|
|
|
if (wsc_attr_iter_get_length(iter) != 1)
|
|
return false;
|
|
|
|
*to = *wsc_attr_iter_get_data(iter);
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool extract_uint16(struct wsc_attr_iter *iter, void *data)
|
|
{
|
|
uint16_t *to = data;
|
|
|
|
if (wsc_attr_iter_get_length(iter) != 2)
|
|
return false;
|
|
|
|
*to = l_get_be16(wsc_attr_iter_get_data(iter));
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool extract_bool(struct wsc_attr_iter *iter, void *data)
|
|
{
|
|
bool *to = data;
|
|
|
|
if (wsc_attr_iter_get_length(iter) != 1)
|
|
return false;
|
|
|
|
*to = *wsc_attr_iter_get_data(iter) ? true : false;
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool extract_uuid(struct wsc_attr_iter *iter, void *data)
|
|
{
|
|
if (wsc_attr_iter_get_length(iter) != 16)
|
|
return false;
|
|
|
|
memcpy(data, wsc_attr_iter_get_data(iter), 16);
|
|
return true;
|
|
}
|
|
|
|
static bool extract_hash(struct wsc_attr_iter *iter, void *data)
|
|
{
|
|
if (wsc_attr_iter_get_length(iter) != 32)
|
|
return false;
|
|
|
|
memcpy(data, wsc_attr_iter_get_data(iter), 32);
|
|
return true;
|
|
}
|
|
|
|
static bool extract_authenticator(struct wsc_attr_iter *iter, void *data)
|
|
{
|
|
if (wsc_attr_iter_get_length(iter) != 8)
|
|
return false;
|
|
|
|
memcpy(data, wsc_attr_iter_get_data(iter), 8);
|
|
return true;
|
|
}
|
|
|
|
static bool extract_ascii_string(struct wsc_attr_iter *iter, void *data,
|
|
unsigned int max_len)
|
|
{
|
|
char *out = data;
|
|
const uint8_t *p;
|
|
unsigned int len;
|
|
unsigned int i;
|
|
|
|
len = wsc_attr_iter_get_length(iter);
|
|
if (len > max_len)
|
|
return false;
|
|
|
|
p = wsc_attr_iter_get_data(iter);
|
|
|
|
for (i = 0; i < len; i++) {
|
|
if (!p[i])
|
|
break;
|
|
|
|
if (!l_ascii_isprint(p[i]))
|
|
return false;
|
|
}
|
|
|
|
memcpy(out, p, i);
|
|
out[i] = '\0';
|
|
return true;
|
|
}
|
|
|
|
static bool extract_utf8_string(struct wsc_attr_iter *iter, void *data,
|
|
unsigned int max_len)
|
|
{
|
|
char *out = data;
|
|
const uint8_t *p;
|
|
unsigned int len;
|
|
unsigned int i;
|
|
|
|
len = wsc_attr_iter_get_length(iter);
|
|
if (len > max_len)
|
|
return false;
|
|
|
|
p = wsc_attr_iter_get_data(iter);
|
|
|
|
for (i = 0; i < len; i++) {
|
|
if (!p[i])
|
|
break;
|
|
}
|
|
|
|
if (!l_utf8_validate((const char *) p, i, NULL))
|
|
return false;
|
|
|
|
memcpy(out, p, i);
|
|
out[i] = '\0';
|
|
return true;
|
|
}
|
|
|
|
static bool extract_nonce(struct wsc_attr_iter *iter, void *data)
|
|
{
|
|
if (wsc_attr_iter_get_length(iter) != 16)
|
|
return false;
|
|
|
|
memcpy(data, wsc_attr_iter_get_data(iter), 16);
|
|
return true;
|
|
}
|
|
|
|
static bool extract_association_state(struct wsc_attr_iter *iter, void *data)
|
|
{
|
|
enum wsc_association_state *out = data;
|
|
uint16_t as;
|
|
|
|
if (!extract_uint16(iter, &as))
|
|
return false;
|
|
|
|
/* WSC 2.0.5: Table 31 */
|
|
if (as > 4)
|
|
return false;
|
|
|
|
*out = as;
|
|
return true;
|
|
}
|
|
|
|
static bool extract_configuration_error(struct wsc_attr_iter *iter, void *data)
|
|
{
|
|
enum wsc_configuration_error *out = data;
|
|
uint16_t ce;
|
|
|
|
if (!extract_uint16(iter, &ce))
|
|
return false;
|
|
|
|
/* WSC 2.0.5: Table 34 */
|
|
if (ce > 20)
|
|
return false;
|
|
|
|
*out = ce;
|
|
return true;
|
|
}
|
|
|
|
static bool extract_device_name(struct wsc_attr_iter *iter, void *data)
|
|
{
|
|
return extract_utf8_string(iter, data, 32);
|
|
}
|
|
|
|
static bool extract_device_password_id(struct wsc_attr_iter *iter, void *data)
|
|
{
|
|
uint16_t v;
|
|
enum wsc_device_password_id *out = data;
|
|
|
|
if (wsc_attr_iter_get_length(iter) != 2)
|
|
return false;
|
|
|
|
v = l_get_be16(wsc_attr_iter_get_data(iter));
|
|
if (v > 0x0008)
|
|
return false;
|
|
|
|
*out = v;
|
|
return true;
|
|
}
|
|
|
|
static bool extract_encrypted_settings(struct wsc_attr_iter *iter, void *data)
|
|
{
|
|
struct iovec *iov = data;
|
|
|
|
iov->iov_len = wsc_attr_iter_get_length(iter);
|
|
iov->iov_base = (void *) wsc_attr_iter_get_data(iter);
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool extract_mac_address(struct wsc_attr_iter *iter, void *data)
|
|
{
|
|
if (wsc_attr_iter_get_length(iter) != 6)
|
|
return false;
|
|
|
|
memcpy(data, wsc_attr_iter_get_data(iter), 6);
|
|
return true;
|
|
}
|
|
|
|
static bool extract_manufacturer(struct wsc_attr_iter *iter, void *data)
|
|
{
|
|
return extract_ascii_string(iter, data, 64);
|
|
}
|
|
|
|
static bool extract_message_type(struct wsc_attr_iter *iter, void *data)
|
|
{
|
|
enum wsc_message_type *out = data;
|
|
uint8_t mt;
|
|
|
|
if (!extract_uint8(iter, &mt))
|
|
return false;
|
|
|
|
/* WSC 2.0.5: Table 42 */
|
|
if (!mt || mt > 0x0f)
|
|
return false;
|
|
|
|
*out = mt;
|
|
return true;
|
|
}
|
|
|
|
static bool extract_model_name(struct wsc_attr_iter *iter, void *data)
|
|
{
|
|
return extract_ascii_string(iter, data, 32);
|
|
}
|
|
|
|
static bool extract_model_number(struct wsc_attr_iter *iter, void *data)
|
|
{
|
|
return extract_ascii_string(iter, data, 32);
|
|
}
|
|
|
|
static bool extract_network_key(struct wsc_attr_iter *iter, void *data)
|
|
{
|
|
struct iovec *network_key = data;
|
|
unsigned int len;
|
|
|
|
len = wsc_attr_iter_get_length(iter);
|
|
if (len > 64)
|
|
return false;
|
|
|
|
network_key->iov_len = len;
|
|
network_key->iov_base = (void *) wsc_attr_iter_get_data(iter);
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool extract_new_password(struct wsc_attr_iter *iter, void *data)
|
|
{
|
|
struct iovec *new_password = data;
|
|
unsigned int len;
|
|
|
|
len = wsc_attr_iter_get_length(iter);
|
|
if (len > 64)
|
|
return false;
|
|
|
|
new_password->iov_len = len;
|
|
new_password->iov_base = (void *) wsc_attr_iter_get_data(iter);
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool extract_os_version(struct wsc_attr_iter *iter, void *data)
|
|
{
|
|
uint32_t v;
|
|
uint32_t *out = data;
|
|
|
|
if (wsc_attr_iter_get_length(iter) != 4)
|
|
return false;
|
|
|
|
v = l_get_be32(wsc_attr_iter_get_data(iter));
|
|
|
|
/*
|
|
* The OS Version component indicates what operating system is running
|
|
* on the device. It is a four-byte field. The most significant bit is
|
|
* reserved and always set to one.
|
|
*
|
|
* We do not strictly check this as at least Apple's WPS implementation
|
|
* does not set the MSB to 1.
|
|
*/
|
|
*out = v & 0x7fffffff;
|
|
return true;
|
|
}
|
|
|
|
static bool extract_public_key(struct wsc_attr_iter *iter, void *data)
|
|
{
|
|
if (wsc_attr_iter_get_length(iter) != 192)
|
|
return false;
|
|
|
|
memcpy(data, wsc_attr_iter_get_data(iter), 192);
|
|
return true;
|
|
}
|
|
|
|
int wsc_parse_primary_device_type(const uint8_t *pdu, size_t len,
|
|
struct wsc_primary_device_type *out)
|
|
{
|
|
uint16_t category;
|
|
|
|
if (len != 8)
|
|
return -EINVAL;
|
|
|
|
category = l_get_be16(pdu);
|
|
if (category > 12 && category != 255)
|
|
return -EINVAL;
|
|
|
|
out->category = category;
|
|
memcpy(out->oui, pdu + 2, 3);
|
|
out->oui_type = pdu[5];
|
|
out->subcategory = l_get_be16(pdu + 6);
|
|
return 0;
|
|
}
|
|
|
|
static bool extract_primary_device_type(struct wsc_attr_iter *iter, void *data)
|
|
{
|
|
return wsc_parse_primary_device_type(wsc_attr_iter_get_data(iter),
|
|
wsc_attr_iter_get_length(iter),
|
|
data) == 0;
|
|
}
|
|
|
|
static bool extract_request_type(struct wsc_attr_iter *iter, void *data)
|
|
{
|
|
enum wsc_request_type *out = data;
|
|
uint8_t rt;
|
|
|
|
if (!extract_uint8(iter, &rt))
|
|
return false;
|
|
|
|
/* WSC 2.0.5: Table 42 */
|
|
if (rt > 3)
|
|
return false;
|
|
|
|
*out = rt;
|
|
return true;
|
|
}
|
|
|
|
static bool extract_response_type(struct wsc_attr_iter *iter, void *data)
|
|
{
|
|
enum wsc_response_type *out = data;
|
|
uint8_t rt;
|
|
|
|
if (!extract_uint8(iter, &rt))
|
|
return false;
|
|
|
|
/* WSC 2.0.5: Table 43 */
|
|
if (rt > 3)
|
|
return false;
|
|
|
|
*out = rt;
|
|
return true;
|
|
}
|
|
|
|
static bool extract_serial_number(struct wsc_attr_iter *iter, void *data)
|
|
{
|
|
return extract_ascii_string(iter, data, 32);
|
|
}
|
|
|
|
static bool extract_ssid(struct wsc_attr_iter *iter, void *data)
|
|
{
|
|
struct iovec *ssid = data;
|
|
unsigned int len;
|
|
|
|
len = wsc_attr_iter_get_length(iter);
|
|
if (len > 32)
|
|
return false;
|
|
|
|
ssid->iov_len = len;
|
|
ssid->iov_base = (void *) wsc_attr_iter_get_data(iter);
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool extract_version(struct wsc_attr_iter *iter, void *data)
|
|
{
|
|
uint8_t *out = data;
|
|
uint8_t v;
|
|
|
|
if (!extract_uint8(iter, &v))
|
|
return false;
|
|
|
|
/*
|
|
* "This attribute is always set to value 0x10 (version 1.0)
|
|
* for backwards compatibility"
|
|
*/
|
|
if (v != 0x10)
|
|
return false;
|
|
|
|
*out = v;
|
|
return true;
|
|
}
|
|
|
|
static bool extract_wsc_state(struct wsc_attr_iter *iter, void *data)
|
|
{
|
|
enum wsc_state *out = data;
|
|
uint8_t st;
|
|
|
|
if (!extract_uint8(iter, &st))
|
|
return false;
|
|
|
|
if (st < 1 || st > 2)
|
|
return false;
|
|
|
|
*out = st;
|
|
return true;
|
|
}
|
|
|
|
static attr_handler handler_for_type(enum wsc_attr type)
|
|
{
|
|
switch (type) {
|
|
case WSC_ATTR_AP_SETUP_LOCKED:
|
|
return extract_bool;
|
|
case WSC_ATTR_ASSOCIATION_STATE:
|
|
return extract_association_state;
|
|
case WSC_ATTR_AUTHENTICATION_TYPE:
|
|
case WSC_ATTR_AUTHENTICATION_TYPE_FLAGS:
|
|
return extract_uint16;
|
|
case WSC_ATTR_AUTHENTICATOR:
|
|
return extract_authenticator;
|
|
case WSC_ATTR_CONFIGURATION_ERROR:
|
|
return extract_configuration_error;
|
|
case WSC_ATTR_CONFIGURATION_METHODS:
|
|
return extract_uint16;
|
|
case WSC_ATTR_CONNECTION_TYPE_FLAGS:
|
|
return extract_uint8;
|
|
case WSC_ATTR_DEVICE_NAME:
|
|
return extract_device_name;
|
|
case WSC_ATTR_DEVICE_PASSWORD_ID:
|
|
return extract_device_password_id;
|
|
case WSC_ATTR_E_HASH1:
|
|
case WSC_ATTR_E_HASH2:
|
|
return extract_hash;
|
|
case WSC_ATTR_E_SNONCE1:
|
|
case WSC_ATTR_E_SNONCE2:
|
|
return extract_nonce;
|
|
case WSC_ATTR_ENCRYPTED_SETTINGS:
|
|
return extract_encrypted_settings;
|
|
case WSC_ATTR_ENCRYPTION_TYPE:
|
|
case WSC_ATTR_ENCRYPTION_TYPE_FLAGS:
|
|
return extract_uint16;
|
|
case WSC_ATTR_ENROLLEE_NONCE:
|
|
return extract_nonce;
|
|
case WSC_ATTR_KEY_WRAP_AUTHENTICATOR:
|
|
return extract_authenticator;
|
|
case WSC_ATTR_MAC_ADDRESS:
|
|
return extract_mac_address;
|
|
case WSC_ATTR_MANUFACTURER:
|
|
return extract_manufacturer;
|
|
case WSC_ATTR_MESSAGE_TYPE:
|
|
return extract_message_type;
|
|
case WSC_ATTR_MODEL_NAME:
|
|
return extract_model_name;
|
|
case WSC_ATTR_MODEL_NUMBER:
|
|
return extract_model_number;
|
|
case WSC_ATTR_NETWORK_INDEX:
|
|
return extract_uint8;
|
|
case WSC_ATTR_NETWORK_KEY:
|
|
return extract_network_key;
|
|
case WSC_ATTR_NEW_PASSWORD:
|
|
return extract_new_password;
|
|
case WSC_ATTR_NETWORK_KEY_INDEX:
|
|
return extract_uint8;
|
|
case WSC_ATTR_OS_VERSION:
|
|
return extract_os_version;
|
|
case WSC_ATTR_PUBLIC_KEY:
|
|
return extract_public_key;
|
|
case WSC_ATTR_PRIMARY_DEVICE_TYPE:
|
|
return extract_primary_device_type;
|
|
case WSC_ATTR_REGISTRAR_NONCE:
|
|
return extract_nonce;
|
|
case WSC_ATTR_REQUEST_TYPE:
|
|
return extract_request_type;
|
|
case WSC_ATTR_REQUESTED_DEVICE_TYPE:
|
|
return extract_primary_device_type;
|
|
case WSC_ATTR_RESPONSE_TYPE:
|
|
return extract_response_type;
|
|
case WSC_ATTR_RF_BANDS:
|
|
return extract_uint8;
|
|
case WSC_ATTR_R_HASH1:
|
|
case WSC_ATTR_R_HASH2:
|
|
return extract_hash;
|
|
case WSC_ATTR_R_SNONCE1:
|
|
case WSC_ATTR_R_SNONCE2:
|
|
return extract_nonce;
|
|
case WSC_ATTR_SELECTED_REGISTRAR:
|
|
return extract_bool;
|
|
case WSC_ATTR_SELECTED_REGISTRAR_CONFIGURATION_METHODS:
|
|
return extract_uint16;
|
|
case WSC_ATTR_SERIAL_NUMBER:
|
|
return extract_serial_number;
|
|
case WSC_ATTR_SSID:
|
|
return extract_ssid;
|
|
case WSC_ATTR_VERSION:
|
|
return extract_version;
|
|
case WSC_ATTR_WSC_STATE:
|
|
return extract_wsc_state;
|
|
case WSC_ATTR_UUID_E:
|
|
return extract_uuid;
|
|
case WSC_ATTR_UUID_R:
|
|
return extract_uuid;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
struct attr_handler_entry {
|
|
enum wsc_attr type;
|
|
unsigned int flags;
|
|
void *data;
|
|
bool present;
|
|
};
|
|
|
|
static bool verify_version2(struct wsc_wfa_ext_iter *ext_iter)
|
|
{
|
|
if (!wsc_wfa_ext_iter_next(ext_iter))
|
|
return false;
|
|
|
|
if (wsc_wfa_ext_iter_get_type(ext_iter) != WSC_WFA_EXTENSION_VERSION2)
|
|
return false;
|
|
|
|
if (wsc_wfa_ext_iter_get_length(ext_iter) != 1)
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
int wsc_parse_attrs(const unsigned char *pdu, unsigned int len,
|
|
bool *out_version2, struct wsc_wfa_ext_iter *ext_iter,
|
|
enum wsc_attr authenticator_type,
|
|
uint8_t *authenticator, int type, ...)
|
|
{
|
|
struct wsc_attr_iter iter;
|
|
struct l_queue *entries;
|
|
const struct l_queue_entry *e;
|
|
va_list args;
|
|
bool version2 = false;
|
|
bool sr = false;
|
|
bool have_required = true;
|
|
bool parse_error = false;
|
|
|
|
if (ext_iter) /* In case of no WFA extension */
|
|
wsc_wfa_ext_iter_init(ext_iter, NULL, 0);
|
|
|
|
wsc_attr_iter_init(&iter, pdu, len);
|
|
|
|
va_start(args, type);
|
|
|
|
entries = l_queue_new();
|
|
|
|
while (type != WSC_ATTR_INVALID) {
|
|
struct attr_handler_entry *entry;
|
|
|
|
entry = l_new(struct attr_handler_entry, 1);
|
|
|
|
entry->type = type;
|
|
entry->flags = va_arg(args, unsigned int);
|
|
entry->data = va_arg(args, void *);
|
|
|
|
type = va_arg(args, enum wsc_attr);
|
|
l_queue_push_tail(entries, entry);
|
|
}
|
|
|
|
va_end(args);
|
|
e = l_queue_get_entries(entries);
|
|
|
|
while (wsc_attr_iter_next(&iter)) {
|
|
attr_handler handler;
|
|
struct attr_handler_entry *entry;
|
|
const struct l_queue_entry *e2;
|
|
|
|
for (e2 = e; e2; e2 = e2->next) {
|
|
entry = e2->data;
|
|
|
|
if (wsc_attr_iter_get_type(&iter) == entry->type) {
|
|
entry->present = true;
|
|
break;
|
|
}
|
|
|
|
if (entry->flags & WSC_ATTR_FLAG_REQUIRED) {
|
|
have_required = false;
|
|
goto done;
|
|
}
|
|
}
|
|
|
|
if (e2 == NULL) {
|
|
if (!ext_iter)
|
|
break;
|
|
|
|
if (wsc_attr_iter_get_type(&iter)
|
|
!= WSC_ATTR_VENDOR_EXTENSION)
|
|
break;
|
|
|
|
if (!wsc_attr_iter_recurse_wfa_ext(&iter, ext_iter))
|
|
break;
|
|
|
|
if (!verify_version2(ext_iter)) {
|
|
parse_error = true;
|
|
goto done;
|
|
}
|
|
|
|
version2 = true;
|
|
continue;
|
|
}
|
|
|
|
if (entry->type == WSC_ATTR_SELECTED_REGISTRAR)
|
|
sr = true;
|
|
|
|
handler = handler_for_type(entry->type);
|
|
|
|
if (!handler(&iter, entry->data)) {
|
|
parse_error = true;
|
|
goto done;
|
|
}
|
|
|
|
e = e2->next;
|
|
}
|
|
|
|
for (; e; e = e->next) {
|
|
struct attr_handler_entry *entry = e->data;
|
|
|
|
if (entry->flags & WSC_ATTR_FLAG_REQUIRED) {
|
|
parse_error = true;
|
|
goto done;
|
|
}
|
|
}
|
|
|
|
/* Authenticator element must be the last element */
|
|
if (authenticator) {
|
|
while (wsc_attr_iter_get_type(&iter) != authenticator_type) {
|
|
if (!wsc_attr_iter_next(&iter)) {
|
|
have_required = false;
|
|
goto done;
|
|
}
|
|
}
|
|
|
|
if (!extract_authenticator(&iter, authenticator)) {
|
|
parse_error = true;
|
|
goto done;
|
|
}
|
|
|
|
if (wsc_attr_iter_next(&iter) != false) {
|
|
parse_error = true;
|
|
goto done;
|
|
}
|
|
|
|
if (wsc_attr_iter_get_pos(&iter) != len) {
|
|
parse_error = true;
|
|
goto done;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Check for Version 2.0 required attributes.
|
|
* If version2 attribute is present in the WFA Vendor field,
|
|
* then check the required attributes are present. Mostly relevant
|
|
* for Probe Request messages according to 8.2.4 in WSC 2.0.5
|
|
*/
|
|
if (version2) {
|
|
struct attr_handler_entry *entry;
|
|
|
|
for (e = l_queue_get_entries(entries); e; e = e->next) {
|
|
entry = e->data;
|
|
|
|
if (!(entry->flags & WSC_ATTR_FLAG_VERSION2))
|
|
continue;
|
|
|
|
if (entry->present)
|
|
continue;
|
|
|
|
parse_error = true;
|
|
goto done;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* If Selected Registrar is present and true, then certain attributes
|
|
* must also be present.
|
|
*/
|
|
if (sr) {
|
|
struct attr_handler_entry *entry;
|
|
|
|
for (e = l_queue_get_entries(entries); e; e = e->next) {
|
|
entry = e->data;
|
|
|
|
if (!(entry->flags & WSC_ATTR_FLAG_REGISTRAR))
|
|
continue;
|
|
|
|
if (entry->present)
|
|
continue;
|
|
|
|
parse_error = true;
|
|
goto done;
|
|
}
|
|
|
|
}
|
|
|
|
done:
|
|
l_queue_destroy(entries, l_free);
|
|
|
|
if (!have_required)
|
|
return -EINVAL;
|
|
if (parse_error)
|
|
return -EBADMSG;
|
|
|
|
if (out_version2)
|
|
*out_version2 = version2;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static bool wfa_extract_bool(struct wsc_wfa_ext_iter *iter, void *data)
|
|
{
|
|
bool *to = data;
|
|
|
|
if (wsc_wfa_ext_iter_get_length(iter) != 1)
|
|
return false;
|
|
|
|
*to = *wsc_wfa_ext_iter_get_data(iter);
|
|
return true;
|
|
}
|
|
|
|
static bool wfa_extract_authorized_macs(struct wsc_wfa_ext_iter *iter,
|
|
void *data)
|
|
{
|
|
uint8_t *to = data;
|
|
unsigned int len = wsc_wfa_ext_iter_get_length(iter);
|
|
unsigned int mod;
|
|
|
|
if (!len || len > 30)
|
|
return false;
|
|
|
|
mod = len % 6;
|
|
if (mod)
|
|
return false;
|
|
|
|
memcpy(to, wsc_wfa_ext_iter_get_data(iter), len);
|
|
return true;
|
|
}
|
|
|
|
static bool wfa_extract_registrar_configuration_methods(
|
|
struct wsc_wfa_ext_iter *iter, void *data)
|
|
{
|
|
uint16_t *to = data;
|
|
|
|
if (wsc_wfa_ext_iter_get_length(iter) != 2)
|
|
return false;
|
|
|
|
*to = l_get_be16(wsc_wfa_ext_iter_get_data(iter));
|
|
return true;
|
|
}
|
|
|
|
#define REQUIRED(attr, out) \
|
|
WSC_ATTR_ ## attr, WSC_ATTR_FLAG_REQUIRED, out
|
|
|
|
#define OPTIONAL(attr, out) \
|
|
WSC_ATTR_ ## attr, 0, out
|
|
|
|
#define REGISTRAR(attr, out) \
|
|
WSC_ATTR_ ## attr, WSC_ATTR_FLAG_REGISTRAR, out
|
|
|
|
#define VERSION2(attr, out) \
|
|
WSC_ATTR_ ## attr, WSC_ATTR_FLAG_VERSION2, out
|
|
|
|
int wsc_parse_credential(const uint8_t *pdu, uint32_t len,
|
|
struct wsc_credential *out)
|
|
{
|
|
uint8_t network_index;
|
|
struct iovec ssid;
|
|
uint8_t network_key_index;
|
|
struct iovec network_key;
|
|
int r;
|
|
|
|
memset(out, 0, sizeof(*out));
|
|
|
|
r = wsc_parse_attrs(pdu, len, NULL, NULL, 0, NULL,
|
|
REQUIRED(NETWORK_INDEX, &network_index),
|
|
REQUIRED(SSID, &ssid),
|
|
REQUIRED(AUTHENTICATION_TYPE, &out->auth_type),
|
|
REQUIRED(ENCRYPTION_TYPE, &out->encryption_type),
|
|
OPTIONAL(NETWORK_KEY_INDEX, &network_key_index),
|
|
REQUIRED(NETWORK_KEY, &network_key),
|
|
REQUIRED(MAC_ADDRESS, &out->addr),
|
|
/* TODO: Parse EAP attributes */
|
|
WSC_ATTR_INVALID);
|
|
|
|
if (r < 0)
|
|
return r;
|
|
|
|
memcpy(out->ssid, ssid.iov_base, ssid.iov_len);
|
|
out->ssid_len = ssid.iov_len;
|
|
|
|
while (out->ssid_len > 0 && out->ssid[out->ssid_len - 1] == 0)
|
|
out->ssid_len -= 1;
|
|
|
|
if (!out->ssid_len)
|
|
return -EBADMSG;
|
|
|
|
memcpy(out->network_key, network_key.iov_base, network_key.iov_len);
|
|
out->network_key_len = network_key.iov_len;
|
|
|
|
/* TODO: Parse Network Key Shareable inside WFA EXT */
|
|
|
|
return 0;
|
|
}
|
|
|
|
int wsc_parse_beacon(const unsigned char *pdu, unsigned int len,
|
|
struct wsc_beacon *out)
|
|
{
|
|
int r;
|
|
struct wsc_wfa_ext_iter iter;
|
|
uint8_t version;
|
|
|
|
memset(out, 0, sizeof(struct wsc_beacon));
|
|
|
|
r = wsc_parse_attrs(pdu, len, &out->version2, &iter, 0, NULL,
|
|
REQUIRED(VERSION, &version),
|
|
REQUIRED(WSC_STATE, &out->state),
|
|
OPTIONAL(AP_SETUP_LOCKED, &out->ap_setup_locked),
|
|
OPTIONAL(SELECTED_REGISTRAR, &out->selected_registrar),
|
|
REGISTRAR(DEVICE_PASSWORD_ID, &out->device_password_id),
|
|
REGISTRAR(SELECTED_REGISTRAR_CONFIGURATION_METHODS,
|
|
&out->selected_reg_config_methods),
|
|
OPTIONAL(UUID_E, &out->uuid_e),
|
|
OPTIONAL(RF_BANDS, &out->rf_bands),
|
|
WSC_ATTR_INVALID);
|
|
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (!wsc_wfa_ext_iter_next(&iter))
|
|
goto done;
|
|
|
|
if (wsc_wfa_ext_iter_get_type(&iter) ==
|
|
WSC_WFA_EXTENSION_AUTHORIZED_MACS) {
|
|
if (!wfa_extract_authorized_macs(&iter, &out->authorized_macs))
|
|
return -EBADMSG;
|
|
|
|
if (!wsc_wfa_ext_iter_next(&iter))
|
|
goto done;
|
|
}
|
|
|
|
if (wsc_wfa_ext_iter_get_type(&iter) ==
|
|
WSC_WFA_EXTENSION_REGISTRAR_CONFIGRATION_METHODS) {
|
|
if (!wfa_extract_registrar_configuration_methods(&iter,
|
|
&out->reg_config_methods))
|
|
return -EBADMSG;
|
|
|
|
if (!wsc_wfa_ext_iter_next(&iter))
|
|
goto done;
|
|
}
|
|
|
|
return -EINVAL;
|
|
|
|
done:
|
|
return 0;
|
|
}
|
|
|
|
int wsc_parse_probe_response(const unsigned char *pdu, unsigned int len,
|
|
struct wsc_probe_response *out)
|
|
{
|
|
int r;
|
|
struct wsc_wfa_ext_iter iter;
|
|
uint8_t version;
|
|
|
|
memset(out, 0, sizeof(struct wsc_probe_response));
|
|
|
|
r = wsc_parse_attrs(pdu, len, &out->version2, &iter, 0, NULL,
|
|
REQUIRED(VERSION, &version),
|
|
REQUIRED(WSC_STATE, &out->state),
|
|
OPTIONAL(AP_SETUP_LOCKED, &out->ap_setup_locked),
|
|
OPTIONAL(SELECTED_REGISTRAR, &out->selected_registrar),
|
|
REGISTRAR(DEVICE_PASSWORD_ID, &out->device_password_id),
|
|
REGISTRAR(SELECTED_REGISTRAR_CONFIGURATION_METHODS,
|
|
&out->selected_reg_config_methods),
|
|
REQUIRED(RESPONSE_TYPE, &out->response_type),
|
|
REQUIRED(UUID_E, &out->uuid_e),
|
|
REQUIRED(MANUFACTURER, &out->manufacturer),
|
|
REQUIRED(MODEL_NAME, &out->model_name),
|
|
REQUIRED(MODEL_NUMBER, &out->model_number),
|
|
REQUIRED(SERIAL_NUMBER, &out->serial_number),
|
|
REQUIRED(PRIMARY_DEVICE_TYPE, &out->primary_device_type),
|
|
REQUIRED(DEVICE_NAME, &out->device_name),
|
|
REQUIRED(CONFIGURATION_METHODS, &out->config_methods),
|
|
OPTIONAL(RF_BANDS, &out->rf_bands),
|
|
WSC_ATTR_INVALID);
|
|
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (!wsc_wfa_ext_iter_next(&iter))
|
|
goto done;
|
|
|
|
if (wsc_wfa_ext_iter_get_type(&iter) ==
|
|
WSC_WFA_EXTENSION_AUTHORIZED_MACS) {
|
|
if (!wfa_extract_authorized_macs(&iter, &out->authorized_macs))
|
|
return -EBADMSG;
|
|
|
|
if (!wsc_wfa_ext_iter_next(&iter))
|
|
goto done;
|
|
}
|
|
|
|
if (wsc_wfa_ext_iter_get_type(&iter) ==
|
|
WSC_WFA_EXTENSION_REGISTRAR_CONFIGRATION_METHODS) {
|
|
if (!wfa_extract_registrar_configuration_methods(&iter,
|
|
&out->reg_config_methods))
|
|
return -EBADMSG;
|
|
|
|
if (!wsc_wfa_ext_iter_next(&iter))
|
|
goto done;
|
|
}
|
|
|
|
return -EINVAL;
|
|
|
|
done:
|
|
return 0;
|
|
}
|
|
|
|
int wsc_parse_probe_request(const unsigned char *pdu, unsigned int len,
|
|
struct wsc_probe_request *out)
|
|
{
|
|
int r;
|
|
struct wsc_wfa_ext_iter iter;
|
|
uint8_t version;
|
|
|
|
memset(out, 0, sizeof(struct wsc_probe_request));
|
|
|
|
r = wsc_parse_attrs(pdu, len, &out->version2, &iter, 0, NULL,
|
|
REQUIRED(VERSION, &version),
|
|
REQUIRED(REQUEST_TYPE, &out->request_type),
|
|
REQUIRED(CONFIGURATION_METHODS, &out->config_methods),
|
|
REQUIRED(UUID_E, &out->uuid_e),
|
|
REQUIRED(PRIMARY_DEVICE_TYPE, &out->primary_device_type),
|
|
REQUIRED(RF_BANDS, &out->rf_bands),
|
|
REQUIRED(ASSOCIATION_STATE, &out->association_state),
|
|
REQUIRED(CONFIGURATION_ERROR, &out->configuration_error),
|
|
REQUIRED(DEVICE_PASSWORD_ID, &out->device_password_id),
|
|
VERSION2(MANUFACTURER, &out->manufacturer),
|
|
VERSION2(MODEL_NAME, &out->model_name),
|
|
VERSION2(MODEL_NUMBER, &out->model_number),
|
|
VERSION2(DEVICE_NAME, &out->device_name),
|
|
OPTIONAL(REQUESTED_DEVICE_TYPE, &out->requested_device_type),
|
|
WSC_ATTR_INVALID);
|
|
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (!wsc_wfa_ext_iter_next(&iter))
|
|
goto done;
|
|
|
|
if (wsc_wfa_ext_iter_get_type(&iter) ==
|
|
WSC_WFA_EXTENSION_REQUEST_TO_ENROLL) {
|
|
if (!wfa_extract_bool(&iter, &out->request_to_enroll))
|
|
return -EBADMSG;
|
|
|
|
if (!wsc_wfa_ext_iter_next(&iter))
|
|
goto done;
|
|
}
|
|
|
|
return -EINVAL;
|
|
|
|
done:
|
|
return 0;
|
|
}
|
|
|
|
int wsc_parse_association_request(const uint8_t *pdu, uint32_t len,
|
|
struct wsc_association_request *out)
|
|
{
|
|
int r;
|
|
struct wsc_wfa_ext_iter iter;
|
|
uint8_t version;
|
|
|
|
memset(out, 0, sizeof(struct wsc_association_request));
|
|
|
|
r = wsc_parse_attrs(pdu, len, &out->version2, &iter, 0, NULL,
|
|
REQUIRED(VERSION, &version),
|
|
REQUIRED(REQUEST_TYPE, &out->request_type),
|
|
WSC_ATTR_INVALID);
|
|
|
|
if (r < 0)
|
|
return r;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int wsc_parse_association_response(const uint8_t *pdu, uint32_t len,
|
|
struct wsc_association_response *out)
|
|
{
|
|
int r;
|
|
struct wsc_wfa_ext_iter iter;
|
|
uint8_t version;
|
|
|
|
memset(out, 0, sizeof(struct wsc_association_response));
|
|
|
|
r = wsc_parse_attrs(pdu, len, &out->version2, &iter, 0, NULL,
|
|
REQUIRED(VERSION, &version),
|
|
REQUIRED(RESPONSE_TYPE, &out->response_type),
|
|
WSC_ATTR_INVALID);
|
|
|
|
if (r < 0)
|
|
return r;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int wsc_parse_m1(const uint8_t *pdu, uint32_t len, struct wsc_m1 *out)
|
|
{
|
|
int r;
|
|
struct wsc_wfa_ext_iter iter;
|
|
uint8_t version;
|
|
enum wsc_message_type msg_type;
|
|
|
|
memset(out, 0, sizeof(struct wsc_m1));
|
|
|
|
r = wsc_parse_attrs(pdu, len, &out->version2, &iter, 0, NULL,
|
|
REQUIRED(VERSION, &version),
|
|
REQUIRED(MESSAGE_TYPE, &msg_type),
|
|
REQUIRED(UUID_E, &out->uuid_e),
|
|
REQUIRED(MAC_ADDRESS, &out->addr),
|
|
REQUIRED(ENROLLEE_NONCE, &out->enrollee_nonce),
|
|
REQUIRED(PUBLIC_KEY, &out->public_key),
|
|
REQUIRED(AUTHENTICATION_TYPE_FLAGS, &out->auth_type_flags),
|
|
REQUIRED(ENCRYPTION_TYPE_FLAGS, &out->encryption_type_flags),
|
|
REQUIRED(CONNECTION_TYPE_FLAGS, &out->connection_type_flags),
|
|
REQUIRED(CONFIGURATION_METHODS, &out->config_methods),
|
|
REQUIRED(WSC_STATE, &out->state),
|
|
REQUIRED(MANUFACTURER, &out->manufacturer),
|
|
REQUIRED(MODEL_NAME, &out->model_name),
|
|
REQUIRED(MODEL_NUMBER, &out->model_number),
|
|
REQUIRED(SERIAL_NUMBER, &out->serial_number),
|
|
REQUIRED(PRIMARY_DEVICE_TYPE, &out->primary_device_type),
|
|
REQUIRED(DEVICE_NAME, &out->device_name),
|
|
REQUIRED(RF_BANDS, &out->rf_bands),
|
|
REQUIRED(ASSOCIATION_STATE, &out->association_state),
|
|
REQUIRED(DEVICE_PASSWORD_ID, &out->device_password_id),
|
|
REQUIRED(CONFIGURATION_ERROR, &out->configuration_error),
|
|
REQUIRED(OS_VERSION, &out->os_version),
|
|
WSC_ATTR_INVALID);
|
|
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (msg_type != WSC_MESSAGE_TYPE_M1)
|
|
return -EBADMSG;
|
|
|
|
/* WSC 2.0.5, Section 8.3.1: "Specific RF band used for this message" */
|
|
if (__builtin_popcount(out->rf_bands) != 1)
|
|
return -EBADMSG;
|
|
|
|
if (!wsc_wfa_ext_iter_next(&iter))
|
|
goto done;
|
|
|
|
if (wsc_wfa_ext_iter_get_type(&iter) ==
|
|
WSC_WFA_EXTENSION_REQUEST_TO_ENROLL) {
|
|
if (!wfa_extract_bool(&iter, &out->request_to_enroll))
|
|
return -EBADMSG;
|
|
|
|
if (!wsc_wfa_ext_iter_next(&iter))
|
|
goto done;
|
|
}
|
|
|
|
return -EINVAL;
|
|
|
|
done:
|
|
return 0;
|
|
}
|
|
|
|
int wsc_parse_m2(const uint8_t *pdu, uint32_t len, struct wsc_m2 *out)
|
|
{
|
|
int r;
|
|
struct wsc_wfa_ext_iter iter;
|
|
uint8_t version;
|
|
enum wsc_message_type msg_type;
|
|
|
|
memset(out, 0, sizeof(struct wsc_m2));
|
|
|
|
r = wsc_parse_attrs(pdu, len, &out->version2, &iter,
|
|
WSC_ATTR_AUTHENTICATOR, out->authenticator,
|
|
REQUIRED(VERSION, &version),
|
|
REQUIRED(MESSAGE_TYPE, &msg_type),
|
|
REQUIRED(ENROLLEE_NONCE, &out->enrollee_nonce),
|
|
REQUIRED(REGISTRAR_NONCE, &out->registrar_nonce),
|
|
REQUIRED(UUID_R, &out->uuid_r),
|
|
REQUIRED(PUBLIC_KEY, &out->public_key),
|
|
REQUIRED(AUTHENTICATION_TYPE_FLAGS, &out->auth_type_flags),
|
|
REQUIRED(ENCRYPTION_TYPE_FLAGS, &out->encryption_type_flags),
|
|
REQUIRED(CONNECTION_TYPE_FLAGS, &out->connection_type_flags),
|
|
REQUIRED(CONFIGURATION_METHODS, &out->config_methods),
|
|
REQUIRED(MANUFACTURER, &out->manufacturer),
|
|
REQUIRED(MODEL_NAME, &out->model_name),
|
|
REQUIRED(MODEL_NUMBER, &out->model_number),
|
|
REQUIRED(SERIAL_NUMBER, &out->serial_number),
|
|
REQUIRED(PRIMARY_DEVICE_TYPE, &out->primary_device_type),
|
|
REQUIRED(DEVICE_NAME, &out->device_name),
|
|
REQUIRED(RF_BANDS, &out->rf_bands),
|
|
REQUIRED(ASSOCIATION_STATE, &out->association_state),
|
|
REQUIRED(CONFIGURATION_ERROR, &out->configuration_error),
|
|
REQUIRED(DEVICE_PASSWORD_ID, &out->device_password_id),
|
|
REQUIRED(OS_VERSION, &out->os_version),
|
|
WSC_ATTR_INVALID);
|
|
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (msg_type != WSC_MESSAGE_TYPE_M2)
|
|
return -EBADMSG;
|
|
|
|
/* WSC 2.0.5, Section 8.3.2: "Specific RF band used for this message" */
|
|
if (__builtin_popcount(out->rf_bands) != 1)
|
|
return -EBADMSG;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int wsc_parse_m3(const uint8_t *pdu, uint32_t len, struct wsc_m3 *out)
|
|
{
|
|
int r;
|
|
struct wsc_wfa_ext_iter iter;
|
|
uint8_t version;
|
|
enum wsc_message_type msg_type;
|
|
|
|
memset(out, 0, sizeof(struct wsc_m3));
|
|
|
|
r = wsc_parse_attrs(pdu, len, &out->version2, &iter,
|
|
WSC_ATTR_AUTHENTICATOR, out->authenticator,
|
|
REQUIRED(VERSION, &version),
|
|
REQUIRED(MESSAGE_TYPE, &msg_type),
|
|
REQUIRED(REGISTRAR_NONCE, &out->registrar_nonce),
|
|
REQUIRED(E_HASH1, &out->e_hash1),
|
|
REQUIRED(E_HASH2, &out->e_hash2),
|
|
WSC_ATTR_INVALID);
|
|
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (msg_type != WSC_MESSAGE_TYPE_M3)
|
|
return -EBADMSG;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int wsc_parse_m4(const uint8_t *pdu, uint32_t len, struct wsc_m4 *out,
|
|
struct iovec *out_encrypted)
|
|
{
|
|
int r;
|
|
struct wsc_wfa_ext_iter iter;
|
|
uint8_t version;
|
|
enum wsc_message_type msg_type;
|
|
|
|
memset(out, 0, sizeof(struct wsc_m4));
|
|
|
|
r = wsc_parse_attrs(pdu, len, &out->version2, &iter,
|
|
WSC_ATTR_AUTHENTICATOR, out->authenticator,
|
|
REQUIRED(VERSION, &version),
|
|
REQUIRED(MESSAGE_TYPE, &msg_type),
|
|
REQUIRED(ENROLLEE_NONCE, &out->enrollee_nonce),
|
|
REQUIRED(R_HASH1, &out->r_hash1),
|
|
REQUIRED(R_HASH2, &out->r_hash2),
|
|
REQUIRED(ENCRYPTED_SETTINGS, out_encrypted),
|
|
WSC_ATTR_INVALID);
|
|
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (msg_type != WSC_MESSAGE_TYPE_M4)
|
|
return -EBADMSG;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int wsc_parse_m4_encrypted_settings(const uint8_t *pdu, uint32_t len,
|
|
struct wsc_m4_encrypted_settings *out)
|
|
{
|
|
memset(out, 0, sizeof(*out));
|
|
|
|
return wsc_parse_attrs(pdu, len, NULL, NULL,
|
|
WSC_ATTR_KEY_WRAP_AUTHENTICATOR, out->authenticator,
|
|
REQUIRED(R_SNONCE1, out->r_snonce1),
|
|
WSC_ATTR_INVALID);
|
|
}
|
|
|
|
int wsc_parse_m5(const uint8_t *pdu, uint32_t len, struct wsc_m5 *out,
|
|
struct iovec *out_encrypted)
|
|
{
|
|
int r;
|
|
struct wsc_wfa_ext_iter iter;
|
|
uint8_t version;
|
|
enum wsc_message_type msg_type;
|
|
|
|
memset(out, 0, sizeof(struct wsc_m5));
|
|
|
|
r = wsc_parse_attrs(pdu, len, &out->version2, &iter,
|
|
WSC_ATTR_AUTHENTICATOR, out->authenticator,
|
|
REQUIRED(VERSION, &version),
|
|
REQUIRED(MESSAGE_TYPE, &msg_type),
|
|
REQUIRED(REGISTRAR_NONCE, &out->registrar_nonce),
|
|
REQUIRED(ENCRYPTED_SETTINGS, out_encrypted),
|
|
WSC_ATTR_INVALID);
|
|
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (msg_type != WSC_MESSAGE_TYPE_M5)
|
|
return -EBADMSG;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int wsc_parse_m5_encrypted_settings(const uint8_t *pdu, uint32_t len,
|
|
struct wsc_m5_encrypted_settings *out)
|
|
{
|
|
memset(out, 0, sizeof(*out));
|
|
|
|
return wsc_parse_attrs(pdu, len, NULL, NULL,
|
|
WSC_ATTR_KEY_WRAP_AUTHENTICATOR, out->authenticator,
|
|
REQUIRED(E_SNONCE1, out->e_snonce1),
|
|
WSC_ATTR_INVALID);
|
|
}
|
|
|
|
int wsc_parse_m6(const uint8_t *pdu, uint32_t len, struct wsc_m6 *out,
|
|
struct iovec *out_encrypted)
|
|
{
|
|
int r;
|
|
struct wsc_wfa_ext_iter iter;
|
|
uint8_t version;
|
|
enum wsc_message_type msg_type;
|
|
|
|
memset(out, 0, sizeof(struct wsc_m6));
|
|
|
|
r = wsc_parse_attrs(pdu, len, &out->version2, &iter,
|
|
WSC_ATTR_AUTHENTICATOR, out->authenticator,
|
|
REQUIRED(VERSION, &version),
|
|
REQUIRED(MESSAGE_TYPE, &msg_type),
|
|
REQUIRED(ENROLLEE_NONCE, &out->enrollee_nonce),
|
|
REQUIRED(ENCRYPTED_SETTINGS, out_encrypted),
|
|
WSC_ATTR_INVALID);
|
|
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (msg_type != WSC_MESSAGE_TYPE_M6)
|
|
return -EBADMSG;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int wsc_parse_m6_encrypted_settings(const uint8_t *pdu, uint32_t len,
|
|
struct wsc_m6_encrypted_settings *out)
|
|
{
|
|
memset(out, 0, sizeof(*out));
|
|
|
|
return wsc_parse_attrs(pdu, len, NULL, NULL,
|
|
WSC_ATTR_KEY_WRAP_AUTHENTICATOR, out->authenticator,
|
|
REQUIRED(R_SNONCE2, out->r_snonce2),
|
|
WSC_ATTR_INVALID);
|
|
}
|
|
|
|
int wsc_parse_m7(const uint8_t *pdu, uint32_t len, struct wsc_m7 *out,
|
|
struct iovec *out_encrypted)
|
|
{
|
|
int r;
|
|
struct wsc_wfa_ext_iter iter;
|
|
uint8_t version;
|
|
enum wsc_message_type msg_type;
|
|
|
|
memset(out, 0, sizeof(struct wsc_m7));
|
|
|
|
r = wsc_parse_attrs(pdu, len, &out->version2, &iter,
|
|
WSC_ATTR_AUTHENTICATOR, out->authenticator,
|
|
REQUIRED(VERSION, &version),
|
|
REQUIRED(MESSAGE_TYPE, &msg_type),
|
|
REQUIRED(REGISTRAR_NONCE, &out->registrar_nonce),
|
|
REQUIRED(ENCRYPTED_SETTINGS, out_encrypted),
|
|
WSC_ATTR_INVALID);
|
|
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (msg_type != WSC_MESSAGE_TYPE_M7)
|
|
return -EBADMSG;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int wsc_parse_m7_encrypted_settings(const uint8_t *pdu, uint32_t len,
|
|
struct wsc_m7_encrypted_settings *out)
|
|
{
|
|
memset(out, 0, sizeof(*out));
|
|
|
|
return wsc_parse_attrs(pdu, len, NULL, NULL,
|
|
WSC_ATTR_KEY_WRAP_AUTHENTICATOR, out->authenticator,
|
|
REQUIRED(E_SNONCE2, out->e_snonce2),
|
|
WSC_ATTR_INVALID);
|
|
}
|
|
|
|
int wsc_parse_m8(const uint8_t *pdu, uint32_t len, struct wsc_m8 *out,
|
|
struct iovec *out_encrypted)
|
|
{
|
|
int r;
|
|
struct wsc_wfa_ext_iter iter;
|
|
uint8_t version;
|
|
enum wsc_message_type msg_type;
|
|
|
|
memset(out, 0, sizeof(struct wsc_m8));
|
|
|
|
r = wsc_parse_attrs(pdu, len, &out->version2, &iter,
|
|
WSC_ATTR_AUTHENTICATOR, out->authenticator,
|
|
REQUIRED(VERSION, &version),
|
|
REQUIRED(MESSAGE_TYPE, &msg_type),
|
|
REQUIRED(ENROLLEE_NONCE, &out->enrollee_nonce),
|
|
REQUIRED(ENCRYPTED_SETTINGS, out_encrypted),
|
|
WSC_ATTR_INVALID);
|
|
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (msg_type != WSC_MESSAGE_TYPE_M8)
|
|
return -EBADMSG;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int wsc_parse_m8_encrypted_settings(const uint8_t *pdu, uint32_t len,
|
|
struct wsc_m8_encrypted_settings *out,
|
|
struct iovec *iov, size_t *iovcnt)
|
|
{
|
|
struct wsc_attr_iter iter;
|
|
size_t n_cred = 0;
|
|
|
|
memset(out, 0, sizeof(*out));
|
|
wsc_attr_iter_init(&iter, pdu, len);
|
|
|
|
if (!wsc_attr_iter_next(&iter))
|
|
return -EBADMSG;
|
|
|
|
while (wsc_attr_iter_get_type(&iter) == WSC_ATTR_CREDENTIAL) {
|
|
if (n_cred < *iovcnt) {
|
|
iov[n_cred].iov_base =
|
|
(void *) wsc_attr_iter_get_data(&iter);
|
|
iov[n_cred].iov_len = wsc_attr_iter_get_length(&iter);
|
|
n_cred += 1;
|
|
}
|
|
|
|
if (!wsc_attr_iter_next(&iter))
|
|
return -EBADMSG;
|
|
}
|
|
|
|
/* At least one Credential element is required */
|
|
if (!n_cred)
|
|
return -EBADMSG;
|
|
|
|
if (wsc_attr_iter_get_type(&iter) == WSC_ATTR_NEW_PASSWORD) {
|
|
struct iovec np;
|
|
|
|
if (!extract_new_password(&iter, &np))
|
|
return -EBADMSG;
|
|
|
|
memcpy(out->new_password, np.iov_base, np.iov_len);
|
|
out->new_password_len = np.iov_len;
|
|
|
|
if (!wsc_attr_iter_next(&iter))
|
|
return -EBADMSG;
|
|
|
|
/*
|
|
* According to WSC 2.0.5, Table 21, Device Password ID is
|
|
* "Required if New Password is included."
|
|
*/
|
|
if (wsc_attr_iter_get_type(&iter) !=
|
|
WSC_ATTR_DEVICE_PASSWORD_ID)
|
|
return -EBADMSG;
|
|
}
|
|
|
|
if (wsc_attr_iter_get_type(&iter) == WSC_ATTR_DEVICE_PASSWORD_ID) {
|
|
extract_device_password_id(&iter, &out->device_password_id);
|
|
|
|
if (!wsc_attr_iter_next(&iter))
|
|
return -EBADMSG;
|
|
}
|
|
|
|
while (wsc_attr_iter_get_type(&iter) !=
|
|
WSC_ATTR_KEY_WRAP_AUTHENTICATOR) {
|
|
if (!wsc_attr_iter_next(&iter))
|
|
return -EBADMSG;
|
|
}
|
|
|
|
if (!extract_authenticator(&iter, &out->authenticator))
|
|
return -EBADMSG;
|
|
|
|
if (wsc_attr_iter_get_pos(&iter) != len)
|
|
return -EBADMSG;
|
|
|
|
*iovcnt = n_cred;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int wsc_parse_wsc_ack(const uint8_t *pdu, uint32_t len, struct wsc_ack *out)
|
|
{
|
|
int r;
|
|
struct wsc_wfa_ext_iter iter;
|
|
uint8_t version;
|
|
enum wsc_message_type msg_type;
|
|
|
|
memset(out, 0, sizeof(struct wsc_ack));
|
|
|
|
r = wsc_parse_attrs(pdu, len, &out->version2, &iter, 0, NULL,
|
|
REQUIRED(VERSION, &version),
|
|
REQUIRED(MESSAGE_TYPE, &msg_type),
|
|
REQUIRED(ENROLLEE_NONCE, &out->enrollee_nonce),
|
|
REQUIRED(REGISTRAR_NONCE, &out->registrar_nonce),
|
|
WSC_ATTR_INVALID);
|
|
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (msg_type != WSC_MESSAGE_TYPE_WSC_ACK)
|
|
return -EBADMSG;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int wsc_parse_wsc_nack(const uint8_t *pdu, uint32_t len, struct wsc_nack *out)
|
|
{
|
|
int r;
|
|
struct wsc_wfa_ext_iter iter;
|
|
uint8_t version;
|
|
enum wsc_message_type msg_type;
|
|
|
|
memset(out, 0, sizeof(struct wsc_nack));
|
|
|
|
r = wsc_parse_attrs(pdu, len, &out->version2, &iter, 0, NULL,
|
|
REQUIRED(VERSION, &version),
|
|
REQUIRED(MESSAGE_TYPE, &msg_type),
|
|
REQUIRED(ENROLLEE_NONCE, &out->enrollee_nonce),
|
|
REQUIRED(REGISTRAR_NONCE, &out->registrar_nonce),
|
|
REQUIRED(CONFIGURATION_ERROR, &out->configuration_error),
|
|
WSC_ATTR_INVALID);
|
|
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (msg_type != WSC_MESSAGE_TYPE_WSC_NACK)
|
|
return -EBADMSG;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int wsc_parse_wsc_done(const uint8_t *pdu, uint32_t len, struct wsc_done *out)
|
|
{
|
|
int r;
|
|
struct wsc_wfa_ext_iter iter;
|
|
uint8_t version;
|
|
enum wsc_message_type msg_type;
|
|
|
|
memset(out, 0, sizeof(struct wsc_done));
|
|
|
|
r = wsc_parse_attrs(pdu, len, &out->version2, &iter, 0, NULL,
|
|
REQUIRED(VERSION, &version),
|
|
REQUIRED(MESSAGE_TYPE, &msg_type),
|
|
REQUIRED(ENROLLEE_NONCE, &out->enrollee_nonce),
|
|
REQUIRED(REGISTRAR_NONCE, &out->registrar_nonce),
|
|
WSC_ATTR_INVALID);
|
|
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (msg_type != WSC_MESSAGE_TYPE_WSC_DONE)
|
|
return -EBADMSG;
|
|
|
|
return 0;
|
|
}
|
|
|
|
struct wsc_attr_builder {
|
|
size_t capacity;
|
|
uint8_t *buf;
|
|
size_t offset;
|
|
uint16_t curlen;
|
|
};
|
|
|
|
static void wsc_attr_builder_grow(struct wsc_attr_builder *builder)
|
|
{
|
|
builder->buf = l_realloc(builder->buf, builder->capacity * 2);
|
|
builder->capacity *= 2;
|
|
}
|
|
|
|
static bool wsc_attr_builder_start_attr(struct wsc_attr_builder *builder,
|
|
enum wsc_attr type)
|
|
{
|
|
uint8_t *bytes;
|
|
|
|
/* TLVs must be length > 0 */
|
|
if (builder->curlen == 0 && builder->offset != 0)
|
|
return false;
|
|
|
|
/* Record previous attribute's length */
|
|
if (builder->curlen > 0) {
|
|
bytes = builder->buf + builder->offset;
|
|
l_put_be16(builder->curlen, bytes + 2);
|
|
builder->offset += 4 + builder->curlen;
|
|
builder->curlen = 0;
|
|
}
|
|
|
|
if (builder->offset + 4 >= builder->capacity)
|
|
wsc_attr_builder_grow(builder);
|
|
|
|
bytes = builder->buf + builder->offset;
|
|
l_put_be16(type, bytes);
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool wsc_attr_builder_put_u8(struct wsc_attr_builder *builder, uint8_t v)
|
|
{
|
|
if (builder->offset + 4 + builder->curlen + 1 >= builder->capacity)
|
|
wsc_attr_builder_grow(builder);
|
|
|
|
builder->buf[builder->offset + 4 + builder->curlen] = v;
|
|
builder->curlen += 1;
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool wsc_attr_builder_put_u16(struct wsc_attr_builder *builder,
|
|
uint16_t v)
|
|
{
|
|
if (builder->offset + 4 + builder->curlen + 2 >= builder->capacity)
|
|
wsc_attr_builder_grow(builder);
|
|
|
|
l_put_be16(v, builder->buf + builder->offset + 4 + builder->curlen);
|
|
builder->curlen += 2;
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool wsc_attr_builder_put_u32(struct wsc_attr_builder *builder,
|
|
uint32_t v)
|
|
{
|
|
if (builder->offset + 4 + builder->curlen + 4 >= builder->capacity)
|
|
wsc_attr_builder_grow(builder);
|
|
|
|
l_put_be32(v, builder->buf + builder->offset + 4 + builder->curlen);
|
|
builder->curlen += 4;
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool wsc_attr_builder_put_bytes(struct wsc_attr_builder *builder,
|
|
const void *bytes, size_t size)
|
|
{
|
|
while (builder->offset + 4 + builder->curlen + size >=
|
|
builder->capacity)
|
|
wsc_attr_builder_grow(builder);
|
|
|
|
memcpy(builder->buf + builder->offset + 4 + builder->curlen,
|
|
bytes, size);
|
|
builder->curlen += size;
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool wsc_attr_builder_put_oui(struct wsc_attr_builder *builder,
|
|
const uint8_t *oui)
|
|
{
|
|
if (builder->offset + 4 + builder->curlen + 3 >= builder->capacity)
|
|
wsc_attr_builder_grow(builder);
|
|
|
|
memcpy(builder->buf + builder->offset + 4 + builder->curlen, oui, 3);
|
|
builder->curlen += 3;
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool wsc_attr_builder_put_string(struct wsc_attr_builder *builder,
|
|
const char *string)
|
|
{
|
|
size_t len;
|
|
|
|
len = string ? strlen(string) : 0;
|
|
|
|
if (len == 0) {
|
|
string = " ";
|
|
len = 1;
|
|
}
|
|
|
|
if (builder->offset + 4 + builder->curlen + len >= builder->capacity)
|
|
wsc_attr_builder_grow(builder);
|
|
|
|
memcpy(builder->buf + builder->offset + 4 + builder->curlen,
|
|
string, len);
|
|
builder->curlen += len;
|
|
|
|
return true;
|
|
}
|
|
|
|
static struct wsc_attr_builder *wsc_attr_builder_new(size_t initial_capacity)
|
|
{
|
|
struct wsc_attr_builder *builder;
|
|
|
|
if (initial_capacity == 0)
|
|
return NULL;
|
|
|
|
builder = l_new(struct wsc_attr_builder, 1);
|
|
builder->buf = l_malloc(initial_capacity);
|
|
builder->capacity = initial_capacity;
|
|
|
|
return builder;
|
|
}
|
|
|
|
static uint8_t *wsc_attr_builder_free(struct wsc_attr_builder *builder,
|
|
bool free_contents,
|
|
size_t *out_size)
|
|
{
|
|
uint8_t *ret;
|
|
|
|
if (builder->curlen > 0) {
|
|
uint8_t *bytes = builder->buf + builder->offset;
|
|
l_put_be16(builder->curlen, bytes + 2);
|
|
builder->offset += 4 + builder->curlen;
|
|
builder->curlen = 0;
|
|
}
|
|
|
|
if (free_contents) {
|
|
l_free(builder->buf);
|
|
builder->buf = NULL;
|
|
}
|
|
|
|
ret = builder->buf;
|
|
|
|
if (out_size)
|
|
*out_size = builder->offset;
|
|
|
|
l_free(builder);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void build_ap_setup_locked(struct wsc_attr_builder *builder, bool locked)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_AP_SETUP_LOCKED);
|
|
wsc_attr_builder_put_u8(builder, locked ? 0x01 : 0x00);
|
|
}
|
|
|
|
static void build_association_state(struct wsc_attr_builder *builder,
|
|
enum wsc_association_state state)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_ASSOCIATION_STATE);
|
|
wsc_attr_builder_put_u16(builder, state);
|
|
}
|
|
|
|
static void build_authentication_type(struct wsc_attr_builder *builder,
|
|
uint16_t auth_type)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_AUTHENTICATION_TYPE);
|
|
wsc_attr_builder_put_u16(builder, auth_type);
|
|
}
|
|
|
|
static void build_authentication_type_flags(struct wsc_attr_builder *builder,
|
|
uint16_t auth_type_flags)
|
|
{
|
|
wsc_attr_builder_start_attr(builder,
|
|
WSC_ATTR_AUTHENTICATION_TYPE_FLAGS);
|
|
wsc_attr_builder_put_u16(builder, auth_type_flags);
|
|
}
|
|
|
|
static void build_authenticator(struct wsc_attr_builder *builder,
|
|
const uint8_t *authenticator)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_AUTHENTICATOR);
|
|
wsc_attr_builder_put_bytes(builder, authenticator, 8);
|
|
}
|
|
|
|
static void build_configuration_error(struct wsc_attr_builder *builder,
|
|
enum wsc_configuration_error error)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_CONFIGURATION_ERROR);
|
|
wsc_attr_builder_put_u16(builder, error);
|
|
}
|
|
|
|
static void build_configuration_methods(struct wsc_attr_builder *builder,
|
|
uint16_t config_methods)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_CONFIGURATION_METHODS);
|
|
wsc_attr_builder_put_u16(builder, config_methods);
|
|
}
|
|
|
|
static void build_connection_type_flags(struct wsc_attr_builder *builder,
|
|
uint8_t connection_type_flags)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_CONNECTION_TYPE_FLAGS);
|
|
wsc_attr_builder_put_u8(builder, connection_type_flags);
|
|
}
|
|
|
|
static void build_device_name(struct wsc_attr_builder *builder,
|
|
const char *device_name)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_DEVICE_NAME);
|
|
wsc_attr_builder_put_string(builder, device_name);
|
|
}
|
|
|
|
static void build_device_password_id(struct wsc_attr_builder *builder,
|
|
enum wsc_device_password_id id)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_DEVICE_PASSWORD_ID);
|
|
wsc_attr_builder_put_u16(builder, id);
|
|
}
|
|
|
|
static void build_encryption_type(struct wsc_attr_builder *builder,
|
|
uint16_t encryption_type)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_ENCRYPTION_TYPE);
|
|
wsc_attr_builder_put_u16(builder, encryption_type);
|
|
}
|
|
|
|
static void build_encryption_type_flags(struct wsc_attr_builder *builder,
|
|
uint16_t encryption_type_flags)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_ENCRYPTION_TYPE_FLAGS);
|
|
wsc_attr_builder_put_u16(builder, encryption_type_flags);
|
|
}
|
|
|
|
static void build_e_hash1(struct wsc_attr_builder *builder,
|
|
const uint8_t *e_hash1)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_E_HASH1);
|
|
wsc_attr_builder_put_bytes(builder, e_hash1, 32);
|
|
}
|
|
|
|
static void build_e_hash2(struct wsc_attr_builder *builder,
|
|
const uint8_t *e_hash2)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_E_HASH2);
|
|
wsc_attr_builder_put_bytes(builder, e_hash2, 32);
|
|
}
|
|
|
|
static void build_e_snonce1(struct wsc_attr_builder *builder,
|
|
const uint8_t *nonce)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_E_SNONCE1);
|
|
wsc_attr_builder_put_bytes(builder, nonce, 16);
|
|
}
|
|
|
|
static void build_e_snonce2(struct wsc_attr_builder *builder,
|
|
const uint8_t *nonce)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_E_SNONCE2);
|
|
wsc_attr_builder_put_bytes(builder, nonce, 16);
|
|
}
|
|
|
|
static void build_enrollee_nonce(struct wsc_attr_builder *builder,
|
|
const uint8_t *nonce)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_ENROLLEE_NONCE);
|
|
wsc_attr_builder_put_bytes(builder, nonce, 16);
|
|
}
|
|
|
|
static void build_key_wrap_authenticator(struct wsc_attr_builder *builder,
|
|
const uint8_t *authenticator)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_KEY_WRAP_AUTHENTICATOR);
|
|
wsc_attr_builder_put_bytes(builder, authenticator, 8);
|
|
}
|
|
|
|
static void build_mac_address(struct wsc_attr_builder *builder,
|
|
const uint8_t *addr)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_MAC_ADDRESS);
|
|
wsc_attr_builder_put_bytes(builder, addr, 6);
|
|
}
|
|
|
|
static void build_manufacturer(struct wsc_attr_builder *builder,
|
|
const char *manufacturer)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_MANUFACTURER);
|
|
wsc_attr_builder_put_string(builder, manufacturer);
|
|
}
|
|
|
|
static void build_message_type(struct wsc_attr_builder *builder,
|
|
enum wsc_message_type type)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_MESSAGE_TYPE);
|
|
wsc_attr_builder_put_u8(builder, type);
|
|
}
|
|
|
|
static void build_model_name(struct wsc_attr_builder *builder,
|
|
const char *model_name)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_MODEL_NAME);
|
|
wsc_attr_builder_put_string(builder, model_name);
|
|
}
|
|
|
|
static void build_model_number(struct wsc_attr_builder *builder,
|
|
const char *model_number)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_MODEL_NUMBER);
|
|
wsc_attr_builder_put_string(builder, model_number);
|
|
}
|
|
|
|
static void build_network_index(struct wsc_attr_builder *builder,
|
|
uint8_t network_index)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_NETWORK_INDEX);
|
|
wsc_attr_builder_put_u8(builder, network_index);
|
|
}
|
|
|
|
static void build_network_key(struct wsc_attr_builder *builder,
|
|
const uint8_t *key, size_t key_len)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_NETWORK_KEY);
|
|
wsc_attr_builder_put_bytes(builder, key, key_len);
|
|
}
|
|
|
|
static void build_new_password(struct wsc_attr_builder *builder,
|
|
const uint8_t *password, size_t password_len)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_NEW_PASSWORD);
|
|
wsc_attr_builder_put_bytes(builder, password, password_len);
|
|
}
|
|
|
|
static void build_os_version(struct wsc_attr_builder *builder,
|
|
uint32_t os_version)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_OS_VERSION);
|
|
wsc_attr_builder_put_u32(builder, os_version | 0x80000000);
|
|
}
|
|
|
|
static void build_primary_device_type(struct wsc_attr_builder *builder,
|
|
const struct wsc_primary_device_type *pdt)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_PRIMARY_DEVICE_TYPE);
|
|
wsc_attr_builder_put_u16(builder, pdt->category);
|
|
wsc_attr_builder_put_oui(builder, pdt->oui);
|
|
wsc_attr_builder_put_u8(builder, pdt->oui_type);
|
|
wsc_attr_builder_put_u16(builder, pdt->subcategory);
|
|
}
|
|
|
|
static void build_public_key(struct wsc_attr_builder *builder,
|
|
const uint8_t *public_key)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_PUBLIC_KEY);
|
|
wsc_attr_builder_put_bytes(builder, public_key, 192);
|
|
}
|
|
|
|
static void build_registrar_nonce(struct wsc_attr_builder *builder,
|
|
const uint8_t *nonce)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_REGISTRAR_NONCE);
|
|
wsc_attr_builder_put_bytes(builder, nonce, 16);
|
|
}
|
|
|
|
static void build_request_type(struct wsc_attr_builder *builder,
|
|
enum wsc_request_type type)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_REQUEST_TYPE);
|
|
wsc_attr_builder_put_u8(builder, type);
|
|
}
|
|
|
|
static void build_response_type(struct wsc_attr_builder *builder,
|
|
enum wsc_response_type type)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_RESPONSE_TYPE);
|
|
wsc_attr_builder_put_u8(builder, type);
|
|
}
|
|
|
|
static void build_rf_bands(struct wsc_attr_builder *builder, uint8_t rf_bands)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_RF_BANDS);
|
|
wsc_attr_builder_put_u8(builder, rf_bands);
|
|
}
|
|
|
|
static void build_r_hash1(struct wsc_attr_builder *builder,
|
|
const uint8_t *r_hash1)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_R_HASH1);
|
|
wsc_attr_builder_put_bytes(builder, r_hash1, 32);
|
|
}
|
|
|
|
static void build_r_hash2(struct wsc_attr_builder *builder,
|
|
const uint8_t *r_hash2)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_R_HASH2);
|
|
wsc_attr_builder_put_bytes(builder, r_hash2, 32);
|
|
}
|
|
|
|
static void build_r_snonce1(struct wsc_attr_builder *builder,
|
|
const uint8_t *nonce)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_R_SNONCE1);
|
|
wsc_attr_builder_put_bytes(builder, nonce, 16);
|
|
}
|
|
|
|
static void build_r_snonce2(struct wsc_attr_builder *builder,
|
|
const uint8_t *nonce)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_R_SNONCE2);
|
|
wsc_attr_builder_put_bytes(builder, nonce, 16);
|
|
}
|
|
|
|
static void build_selected_registrar(struct wsc_attr_builder *builder,
|
|
bool selected)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_SELECTED_REGISTRAR);
|
|
wsc_attr_builder_put_u8(builder, selected ? 0x01 : 0x00);
|
|
}
|
|
|
|
static void build_selected_registrar_configuration_methods(
|
|
struct wsc_attr_builder *builder,
|
|
uint16_t config_methods)
|
|
{
|
|
wsc_attr_builder_start_attr(builder,
|
|
WSC_ATTR_SELECTED_REGISTRAR_CONFIGURATION_METHODS);
|
|
wsc_attr_builder_put_u16(builder, config_methods);
|
|
}
|
|
|
|
static void build_ssid(struct wsc_attr_builder *builder, const uint8_t *ssid,
|
|
size_t ssid_len)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_SSID);
|
|
wsc_attr_builder_put_bytes(builder, ssid, ssid_len);
|
|
}
|
|
|
|
static void build_serial_number(struct wsc_attr_builder *builder,
|
|
const char *serial_number)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_SERIAL_NUMBER);
|
|
wsc_attr_builder_put_string(builder, serial_number);
|
|
}
|
|
|
|
static void build_uuid_e(struct wsc_attr_builder *builder, const uint8_t *uuid)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_UUID_E);
|
|
wsc_attr_builder_put_bytes(builder, uuid, 16);
|
|
}
|
|
|
|
static void build_uuid_r(struct wsc_attr_builder *builder, const uint8_t *uuid)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_UUID_R);
|
|
wsc_attr_builder_put_bytes(builder, uuid, 16);
|
|
}
|
|
|
|
static void build_version(struct wsc_attr_builder *builder, uint8_t version)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_VERSION);
|
|
wsc_attr_builder_put_u8(builder, version);
|
|
}
|
|
|
|
static void build_wsc_state(struct wsc_attr_builder *builder,
|
|
enum wsc_state state)
|
|
{
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_WSC_STATE);
|
|
wsc_attr_builder_put_u8(builder, state);
|
|
}
|
|
|
|
#define START_WFA_VENDOR_EXTENSION() \
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_VENDOR_EXTENSION);\
|
|
wsc_attr_builder_put_oui(builder, wsc_wfa_oui); \
|
|
wsc_attr_builder_put_u8(builder, WSC_WFA_EXTENSION_VERSION2); \
|
|
wsc_attr_builder_put_u8(builder, 1); \
|
|
wsc_attr_builder_put_u8(builder, 0x20)
|
|
|
|
uint8_t *wsc_build_credential(const struct wsc_credential *in, size_t *out_len)
|
|
{
|
|
struct wsc_attr_builder *builder;
|
|
uint8_t *ret;
|
|
|
|
builder = wsc_attr_builder_new(128);
|
|
build_network_index(builder, 1);
|
|
build_ssid(builder, in->ssid, in->ssid_len);
|
|
build_authentication_type(builder, in->auth_type);
|
|
build_encryption_type(builder, in->encryption_type);
|
|
build_network_key(builder, in->network_key, in->network_key_len);
|
|
build_mac_address(builder, in->addr);
|
|
|
|
/* TODO: Append EAP attrs & Network Key Shareable inside WFA EXT */
|
|
|
|
ret = wsc_attr_builder_free(builder, false, out_len);
|
|
return ret;
|
|
}
|
|
|
|
static void build_credential(struct wsc_attr_builder *builder,
|
|
const struct wsc_credential *cred)
|
|
{
|
|
size_t data_len;
|
|
uint8_t *data = wsc_build_credential(cred, &data_len);
|
|
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_CREDENTIAL);
|
|
wsc_attr_builder_put_bytes(builder, data, data_len);
|
|
l_free(data);
|
|
}
|
|
|
|
uint8_t *wsc_build_probe_request(const struct wsc_probe_request *probe_request,
|
|
size_t *out_len)
|
|
{
|
|
struct wsc_attr_builder *builder;
|
|
uint8_t *ret;
|
|
|
|
builder = wsc_attr_builder_new(512);
|
|
build_version(builder, 0x10);
|
|
build_request_type(builder, probe_request->request_type);
|
|
build_configuration_methods(builder, probe_request->config_methods);
|
|
build_uuid_e(builder, probe_request->uuid_e);
|
|
build_primary_device_type(builder, &probe_request->primary_device_type);
|
|
build_rf_bands(builder, probe_request->rf_bands);
|
|
build_association_state(builder, probe_request->association_state);
|
|
build_configuration_error(builder, probe_request->configuration_error);
|
|
build_device_password_id(builder, probe_request->device_password_id);
|
|
|
|
if (!probe_request->version2)
|
|
goto done;
|
|
|
|
build_manufacturer(builder, probe_request->manufacturer);
|
|
build_model_name(builder, probe_request->model_name);
|
|
build_model_number(builder, probe_request->model_number);
|
|
build_device_name(builder, probe_request->device_name);
|
|
|
|
START_WFA_VENDOR_EXTENSION();
|
|
|
|
if (!probe_request->request_to_enroll)
|
|
goto done;
|
|
|
|
wsc_attr_builder_put_u8(builder, WSC_WFA_EXTENSION_REQUEST_TO_ENROLL);
|
|
wsc_attr_builder_put_u8(builder, 1);
|
|
wsc_attr_builder_put_u8(builder, 1);
|
|
|
|
done:
|
|
ret = wsc_attr_builder_free(builder, false, out_len);
|
|
return ret;
|
|
}
|
|
|
|
uint8_t *wsc_build_probe_response(
|
|
const struct wsc_probe_response *probe_response,
|
|
size_t *out_len)
|
|
{
|
|
struct wsc_attr_builder *builder;
|
|
uint8_t *ret;
|
|
|
|
builder = wsc_attr_builder_new(512);
|
|
build_version(builder, 0x10);
|
|
build_wsc_state(builder, probe_response->state);
|
|
|
|
if (probe_response->ap_setup_locked)
|
|
build_ap_setup_locked(builder, true);
|
|
|
|
if (probe_response->selected_registrar) {
|
|
build_selected_registrar(builder, true);
|
|
build_device_password_id(builder,
|
|
probe_response->device_password_id);
|
|
build_selected_registrar_configuration_methods(builder,
|
|
probe_response->selected_reg_config_methods);
|
|
}
|
|
|
|
build_response_type(builder, probe_response->response_type);
|
|
build_uuid_e(builder, probe_response->uuid_e);
|
|
build_manufacturer(builder, probe_response->manufacturer);
|
|
build_model_name(builder, probe_response->model_name);
|
|
build_model_number(builder, probe_response->model_number);
|
|
build_serial_number(builder, probe_response->serial_number);
|
|
build_primary_device_type(builder,
|
|
&probe_response->primary_device_type);
|
|
build_device_name(builder, probe_response->device_name);
|
|
build_configuration_methods(builder, probe_response->config_methods);
|
|
|
|
if (probe_response->rf_bands & (probe_response->rf_bands - 1))
|
|
build_rf_bands(builder, probe_response->rf_bands);
|
|
|
|
if (!probe_response->version2)
|
|
goto done;
|
|
|
|
START_WFA_VENDOR_EXTENSION();
|
|
|
|
if (!util_mem_is_zero(probe_response->authorized_macs, 30)) {
|
|
int count;
|
|
|
|
for (count = 1; count < 5; count++)
|
|
if (util_mem_is_zero(probe_response->authorized_macs +
|
|
count * 6, 30 - count * 6))
|
|
break;
|
|
|
|
wsc_attr_builder_put_u8(builder,
|
|
WSC_WFA_EXTENSION_AUTHORIZED_MACS);
|
|
wsc_attr_builder_put_u8(builder, count * 6);
|
|
wsc_attr_builder_put_bytes(builder,
|
|
probe_response->authorized_macs,
|
|
count * 6);
|
|
}
|
|
|
|
if (probe_response->reg_config_methods) {
|
|
wsc_attr_builder_put_u8(builder,
|
|
WSC_WFA_EXTENSION_REGISTRAR_CONFIGRATION_METHODS);
|
|
wsc_attr_builder_put_u8(builder, 2);
|
|
wsc_attr_builder_put_u16(builder,
|
|
probe_response->reg_config_methods);
|
|
}
|
|
|
|
done:
|
|
ret = wsc_attr_builder_free(builder, false, out_len);
|
|
return ret;
|
|
}
|
|
|
|
uint8_t *wsc_build_association_request(
|
|
const struct wsc_association_request *association_request,
|
|
size_t *out_len)
|
|
{
|
|
struct wsc_attr_builder *builder;
|
|
uint8_t *ret;
|
|
|
|
builder = wsc_attr_builder_new(128);
|
|
build_version(builder, 0x10);
|
|
build_request_type(builder, association_request->request_type);
|
|
|
|
if (!association_request->version2)
|
|
goto done;
|
|
|
|
START_WFA_VENDOR_EXTENSION();
|
|
|
|
done:
|
|
ret = wsc_attr_builder_free(builder, false, out_len);
|
|
return ret;
|
|
}
|
|
|
|
uint8_t *wsc_build_association_response(
|
|
const struct wsc_association_response *association_response,
|
|
size_t *out_len)
|
|
{
|
|
struct wsc_attr_builder *builder;
|
|
uint8_t *ret;
|
|
|
|
builder = wsc_attr_builder_new(128);
|
|
build_version(builder, 0x10);
|
|
build_response_type(builder, association_response->response_type);
|
|
|
|
if (!association_response->version2)
|
|
goto done;
|
|
|
|
START_WFA_VENDOR_EXTENSION();
|
|
|
|
done:
|
|
ret = wsc_attr_builder_free(builder, false, out_len);
|
|
return ret;
|
|
}
|
|
|
|
uint8_t *wsc_build_m1(const struct wsc_m1 *m1, size_t *out_len)
|
|
{
|
|
struct wsc_attr_builder *builder;
|
|
uint8_t *ret;
|
|
|
|
builder = wsc_attr_builder_new(1024);
|
|
build_version(builder, 0x10);
|
|
build_message_type(builder, WSC_MESSAGE_TYPE_M1);
|
|
build_uuid_e(builder, m1->uuid_e);
|
|
build_mac_address(builder, m1->addr);
|
|
build_enrollee_nonce(builder, m1->enrollee_nonce);
|
|
build_public_key(builder, m1->public_key);
|
|
build_authentication_type_flags(builder, m1->auth_type_flags);
|
|
build_encryption_type_flags(builder, m1->encryption_type_flags);
|
|
build_connection_type_flags(builder, m1->connection_type_flags);
|
|
build_configuration_methods(builder, m1->config_methods);
|
|
build_wsc_state(builder, m1->state);
|
|
build_manufacturer(builder, m1->manufacturer);
|
|
build_model_name(builder, m1->model_name);
|
|
build_model_number(builder, m1->model_number);
|
|
build_serial_number(builder, m1->serial_number);
|
|
build_primary_device_type(builder, &m1->primary_device_type);
|
|
build_device_name(builder, m1->device_name);
|
|
build_rf_bands(builder, m1->rf_bands);
|
|
build_association_state(builder, m1->association_state);
|
|
build_device_password_id(builder, m1->device_password_id);
|
|
build_configuration_error(builder, m1->configuration_error);
|
|
build_os_version(builder, m1->os_version);
|
|
|
|
if (!m1->version2)
|
|
goto done;
|
|
|
|
START_WFA_VENDOR_EXTENSION();
|
|
|
|
if (!m1->request_to_enroll)
|
|
goto done;
|
|
|
|
wsc_attr_builder_put_u8(builder, WSC_WFA_EXTENSION_REQUEST_TO_ENROLL);
|
|
wsc_attr_builder_put_u8(builder, 1);
|
|
wsc_attr_builder_put_u8(builder, 1);
|
|
|
|
done:
|
|
ret = wsc_attr_builder_free(builder, false, out_len);
|
|
return ret;
|
|
}
|
|
|
|
uint8_t *wsc_build_m2(const struct wsc_m2 *m2, size_t *out_len)
|
|
{
|
|
struct wsc_attr_builder *builder;
|
|
uint8_t *ret;
|
|
|
|
builder = wsc_attr_builder_new(1024);
|
|
build_version(builder, 0x10);
|
|
build_message_type(builder, WSC_MESSAGE_TYPE_M2);
|
|
build_enrollee_nonce(builder, m2->enrollee_nonce);
|
|
build_registrar_nonce(builder, m2->registrar_nonce);
|
|
build_uuid_r(builder, m2->uuid_r);
|
|
build_public_key(builder, m2->public_key);
|
|
build_authentication_type_flags(builder, m2->auth_type_flags);
|
|
build_encryption_type_flags(builder, m2->encryption_type_flags);
|
|
build_connection_type_flags(builder, m2->connection_type_flags);
|
|
build_configuration_methods(builder, m2->config_methods);
|
|
build_manufacturer(builder, m2->manufacturer);
|
|
build_model_name(builder, m2->model_name);
|
|
build_model_number(builder, m2->model_number);
|
|
build_serial_number(builder, m2->serial_number);
|
|
build_primary_device_type(builder, &m2->primary_device_type);
|
|
build_device_name(builder, m2->device_name);
|
|
build_rf_bands(builder, m2->rf_bands);
|
|
build_association_state(builder, m2->association_state);
|
|
build_configuration_error(builder, m2->configuration_error);
|
|
build_device_password_id(builder, m2->device_password_id);
|
|
build_os_version(builder, m2->os_version);
|
|
|
|
if (!m2->version2)
|
|
goto done;
|
|
|
|
START_WFA_VENDOR_EXTENSION();
|
|
|
|
done:
|
|
build_authenticator(builder, m2->authenticator);
|
|
|
|
ret = wsc_attr_builder_free(builder, false, out_len);
|
|
return ret;
|
|
}
|
|
|
|
uint8_t *wsc_build_m3(const struct wsc_m3 *m3, size_t *out_len)
|
|
{
|
|
struct wsc_attr_builder *builder;
|
|
uint8_t *ret;
|
|
|
|
builder = wsc_attr_builder_new(256);
|
|
build_version(builder, 0x10);
|
|
build_message_type(builder, WSC_MESSAGE_TYPE_M3);
|
|
build_registrar_nonce(builder, m3->registrar_nonce);
|
|
build_e_hash1(builder, m3->e_hash1);
|
|
build_e_hash2(builder, m3->e_hash2);
|
|
|
|
if (!m3->version2)
|
|
goto done;
|
|
|
|
START_WFA_VENDOR_EXTENSION();
|
|
|
|
done:
|
|
build_authenticator(builder, m3->authenticator);
|
|
|
|
ret = wsc_attr_builder_free(builder, false, out_len);
|
|
return ret;
|
|
}
|
|
|
|
uint8_t *wsc_build_m4(const struct wsc_m4 *m4, const uint8_t *encrypted,
|
|
size_t encrypted_len, size_t *out_len)
|
|
{
|
|
struct wsc_attr_builder *builder;
|
|
uint8_t *ret;
|
|
|
|
builder = wsc_attr_builder_new(256);
|
|
build_version(builder, 0x10);
|
|
build_message_type(builder, WSC_MESSAGE_TYPE_M4);
|
|
build_enrollee_nonce(builder, m4->enrollee_nonce);
|
|
build_r_hash1(builder, m4->r_hash1);
|
|
build_r_hash2(builder, m4->r_hash2);
|
|
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_ENCRYPTED_SETTINGS);
|
|
wsc_attr_builder_put_bytes(builder, encrypted, encrypted_len);
|
|
|
|
if (!m4->version2)
|
|
goto done;
|
|
|
|
START_WFA_VENDOR_EXTENSION();
|
|
|
|
done:
|
|
build_authenticator(builder, m4->authenticator);
|
|
|
|
ret = wsc_attr_builder_free(builder, false, out_len);
|
|
return ret;
|
|
}
|
|
|
|
uint8_t *wsc_build_m4_encrypted_settings(
|
|
const struct wsc_m4_encrypted_settings *in,
|
|
size_t *out_len)
|
|
{
|
|
struct wsc_attr_builder *builder;
|
|
|
|
builder = wsc_attr_builder_new(256);
|
|
build_r_snonce1(builder, in->r_snonce1);
|
|
build_key_wrap_authenticator(builder, in->authenticator);
|
|
|
|
return wsc_attr_builder_free(builder, false, out_len);
|
|
}
|
|
|
|
uint8_t *wsc_build_m5(const struct wsc_m5 *m5, const uint8_t *encrypted,
|
|
size_t encrypted_len, size_t *out_len)
|
|
{
|
|
struct wsc_attr_builder *builder;
|
|
uint8_t *ret;
|
|
|
|
builder = wsc_attr_builder_new(256);
|
|
build_version(builder, 0x10);
|
|
build_message_type(builder, WSC_MESSAGE_TYPE_M5);
|
|
build_registrar_nonce(builder, m5->registrar_nonce);
|
|
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_ENCRYPTED_SETTINGS);
|
|
wsc_attr_builder_put_bytes(builder, encrypted, encrypted_len);
|
|
|
|
if (!m5->version2)
|
|
goto done;
|
|
|
|
START_WFA_VENDOR_EXTENSION();
|
|
|
|
done:
|
|
build_authenticator(builder, m5->authenticator);
|
|
|
|
ret = wsc_attr_builder_free(builder, false, out_len);
|
|
return ret;
|
|
}
|
|
|
|
uint8_t *wsc_build_m5_encrypted_settings(
|
|
const struct wsc_m5_encrypted_settings *in,
|
|
size_t *out_len)
|
|
{
|
|
struct wsc_attr_builder *builder;
|
|
|
|
builder = wsc_attr_builder_new(256);
|
|
build_e_snonce1(builder, in->e_snonce1);
|
|
build_key_wrap_authenticator(builder, in->authenticator);
|
|
|
|
return wsc_attr_builder_free(builder, false, out_len);
|
|
}
|
|
|
|
uint8_t *wsc_build_m6(const struct wsc_m6 *m6, const uint8_t *encrypted,
|
|
size_t encrypted_len, size_t *out_len)
|
|
{
|
|
struct wsc_attr_builder *builder;
|
|
uint8_t *ret;
|
|
|
|
builder = wsc_attr_builder_new(256);
|
|
build_version(builder, 0x10);
|
|
build_message_type(builder, WSC_MESSAGE_TYPE_M6);
|
|
build_enrollee_nonce(builder, m6->enrollee_nonce);
|
|
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_ENCRYPTED_SETTINGS);
|
|
wsc_attr_builder_put_bytes(builder, encrypted, encrypted_len);
|
|
|
|
if (!m6->version2)
|
|
goto done;
|
|
|
|
START_WFA_VENDOR_EXTENSION();
|
|
|
|
done:
|
|
build_authenticator(builder, m6->authenticator);
|
|
|
|
ret = wsc_attr_builder_free(builder, false, out_len);
|
|
return ret;
|
|
}
|
|
|
|
uint8_t *wsc_build_m6_encrypted_settings(
|
|
const struct wsc_m6_encrypted_settings *in,
|
|
size_t *out_len)
|
|
{
|
|
struct wsc_attr_builder *builder;
|
|
|
|
builder = wsc_attr_builder_new(256);
|
|
build_r_snonce2(builder, in->r_snonce2);
|
|
build_key_wrap_authenticator(builder, in->authenticator);
|
|
|
|
return wsc_attr_builder_free(builder, false, out_len);
|
|
}
|
|
|
|
uint8_t *wsc_build_m7(const struct wsc_m7 *m7, const uint8_t *encrypted,
|
|
size_t encrypted_len, size_t *out_len)
|
|
{
|
|
struct wsc_attr_builder *builder;
|
|
uint8_t *ret;
|
|
|
|
builder = wsc_attr_builder_new(256);
|
|
build_version(builder, 0x10);
|
|
build_message_type(builder, WSC_MESSAGE_TYPE_M7);
|
|
build_registrar_nonce(builder, m7->registrar_nonce);
|
|
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_ENCRYPTED_SETTINGS);
|
|
wsc_attr_builder_put_bytes(builder, encrypted, encrypted_len);
|
|
|
|
if (!m7->version2)
|
|
goto done;
|
|
|
|
START_WFA_VENDOR_EXTENSION();
|
|
|
|
done:
|
|
build_authenticator(builder, m7->authenticator);
|
|
|
|
ret = wsc_attr_builder_free(builder, false, out_len);
|
|
return ret;
|
|
}
|
|
|
|
uint8_t *wsc_build_m7_encrypted_settings(
|
|
const struct wsc_m7_encrypted_settings *in,
|
|
size_t *out_len)
|
|
{
|
|
struct wsc_attr_builder *builder;
|
|
|
|
builder = wsc_attr_builder_new(256);
|
|
build_e_snonce2(builder, in->e_snonce2);
|
|
build_key_wrap_authenticator(builder, in->authenticator);
|
|
|
|
return wsc_attr_builder_free(builder, false, out_len);
|
|
}
|
|
|
|
uint8_t *wsc_build_m8(const struct wsc_m8 *m8, const uint8_t *encrypted,
|
|
size_t encrypted_len, size_t *out_len)
|
|
{
|
|
struct wsc_attr_builder *builder;
|
|
uint8_t *ret;
|
|
|
|
builder = wsc_attr_builder_new(256);
|
|
build_version(builder, 0x10);
|
|
build_message_type(builder, WSC_MESSAGE_TYPE_M8);
|
|
build_enrollee_nonce(builder, m8->enrollee_nonce);
|
|
|
|
wsc_attr_builder_start_attr(builder, WSC_ATTR_ENCRYPTED_SETTINGS);
|
|
wsc_attr_builder_put_bytes(builder, encrypted, encrypted_len);
|
|
|
|
if (!m8->version2)
|
|
goto done;
|
|
|
|
START_WFA_VENDOR_EXTENSION();
|
|
|
|
done:
|
|
build_authenticator(builder, m8->authenticator);
|
|
|
|
ret = wsc_attr_builder_free(builder, false, out_len);
|
|
return ret;
|
|
}
|
|
|
|
uint8_t *wsc_build_m8_encrypted_settings(
|
|
const struct wsc_m8_encrypted_settings *in,
|
|
const struct wsc_credential *creds,
|
|
unsigned int creds_cnt, size_t *out_len)
|
|
{
|
|
struct wsc_attr_builder *builder;
|
|
unsigned int i;
|
|
|
|
builder = wsc_attr_builder_new(256);
|
|
|
|
for (i = 0; i < creds_cnt; i++)
|
|
build_credential(builder, &creds[i]);
|
|
|
|
if (in->new_password_len) {
|
|
build_new_password(builder, in->new_password,
|
|
in->new_password_len);
|
|
build_device_password_id(builder, in->device_password_id);
|
|
}
|
|
|
|
build_key_wrap_authenticator(builder, in->authenticator);
|
|
|
|
return wsc_attr_builder_free(builder, false, out_len);
|
|
}
|
|
|
|
uint8_t *wsc_build_wsc_ack(const struct wsc_ack *ack, size_t *out_len)
|
|
{
|
|
struct wsc_attr_builder *builder;
|
|
uint8_t *ret;
|
|
|
|
builder = wsc_attr_builder_new(256);
|
|
build_version(builder, 0x10);
|
|
build_message_type(builder, WSC_MESSAGE_TYPE_WSC_ACK);
|
|
build_enrollee_nonce(builder, ack->enrollee_nonce);
|
|
build_registrar_nonce(builder, ack->registrar_nonce);
|
|
|
|
if (!ack->version2)
|
|
goto done;
|
|
|
|
START_WFA_VENDOR_EXTENSION();
|
|
|
|
done:
|
|
ret = wsc_attr_builder_free(builder, false, out_len);
|
|
return ret;
|
|
}
|
|
|
|
uint8_t *wsc_build_wsc_nack(const struct wsc_nack *nack, size_t *out_len)
|
|
{
|
|
struct wsc_attr_builder *builder;
|
|
uint8_t *ret;
|
|
|
|
builder = wsc_attr_builder_new(256);
|
|
build_version(builder, 0x10);
|
|
build_message_type(builder, WSC_MESSAGE_TYPE_WSC_NACK);
|
|
build_enrollee_nonce(builder, nack->enrollee_nonce);
|
|
build_registrar_nonce(builder, nack->registrar_nonce);
|
|
build_configuration_error(builder, nack->configuration_error);
|
|
|
|
if (!nack->version2)
|
|
goto done;
|
|
|
|
START_WFA_VENDOR_EXTENSION();
|
|
|
|
done:
|
|
ret = wsc_attr_builder_free(builder, false, out_len);
|
|
return ret;
|
|
}
|
|
|
|
uint8_t *wsc_build_wsc_done(const struct wsc_done *done, size_t *out_len)
|
|
{
|
|
struct wsc_attr_builder *builder;
|
|
uint8_t *ret;
|
|
|
|
builder = wsc_attr_builder_new(256);
|
|
build_version(builder, 0x10);
|
|
build_message_type(builder, WSC_MESSAGE_TYPE_WSC_DONE);
|
|
build_enrollee_nonce(builder, done->enrollee_nonce);
|
|
build_registrar_nonce(builder, done->registrar_nonce);
|
|
|
|
if (!done->version2)
|
|
goto done;
|
|
|
|
START_WFA_VENDOR_EXTENSION();
|
|
|
|
done:
|
|
ret = wsc_attr_builder_free(builder, false, out_len);
|
|
return ret;
|
|
}
|
|
|
|
uint8_t *wsc_build_p2p_attrs(const struct wsc_p2p_attrs *attrs, size_t *out_len)
|
|
{
|
|
struct wsc_attr_builder *builder;
|
|
uint8_t *ret;
|
|
|
|
builder = wsc_attr_builder_new(512);
|
|
|
|
if (attrs->version)
|
|
build_version(builder, 0x10);
|
|
|
|
if (attrs->device_password_id)
|
|
build_device_password_id(builder, attrs->device_password_id);
|
|
|
|
if (attrs->config_methods)
|
|
build_configuration_methods(builder, attrs->config_methods);
|
|
|
|
if (!attrs->version2)
|
|
goto done;
|
|
|
|
START_WFA_VENDOR_EXTENSION();
|
|
|
|
done:
|
|
ret = wsc_attr_builder_free(builder, false, out_len);
|
|
return ret;
|
|
}
|
|
|
|
bool wsc_uuid_from_addr(const uint8_t addr[], uint8_t *out_uuid)
|
|
{
|
|
/* Reuse the NSID from WPA Supplicant for compatibility */
|
|
static const uint8_t nsid[] = {
|
|
0x52, 0x64, 0x80, 0xf8, 0xc9, 0x9b, 0x4b, 0xe5,
|
|
0xa6, 0x55, 0x58, 0xed, 0x5f, 0x5d, 0x60, 0x84,
|
|
};
|
|
|
|
return l_uuid_v5(nsid, addr, 6, out_uuid);
|
|
}
|
|
|
|
/* WSC 2.0.5, Section 7.3 */
|
|
bool wsc_kdf(const void *key, void *output, size_t size)
|
|
{
|
|
static char *personalization = "Wi-Fi Easy and Secure Key Derivation";
|
|
struct l_checksum *hmac;
|
|
unsigned int i, offset = 0;
|
|
unsigned int counter;
|
|
uint8_t counter_be[4];
|
|
uint8_t total_key_bits[4];
|
|
struct iovec iov[3] = {
|
|
[0] = { .iov_base = counter_be, .iov_len = 4 },
|
|
[1] = { .iov_base = personalization,
|
|
.iov_len = strlen(personalization) },
|
|
[2] = { .iov_base = total_key_bits, .iov_len = 4 },
|
|
};
|
|
|
|
hmac = l_checksum_new_hmac(L_CHECKSUM_SHA256, key, 32);
|
|
if (!hmac)
|
|
return false;
|
|
|
|
/* Length is denominated in bits, not bytes */
|
|
l_put_be32(size * 8, total_key_bits);
|
|
|
|
/* KDF processes in 256-bit chunks (32 bytes) */
|
|
for (i = 0, counter = 1; i < (size + 31) / 32; i++, counter++) {
|
|
size_t len;
|
|
|
|
if (size - offset > 32)
|
|
len = 32;
|
|
else
|
|
len = size - offset;
|
|
|
|
l_put_be32(counter, counter_be);
|
|
|
|
l_checksum_updatev(hmac, iov, 3);
|
|
l_checksum_get_digest(hmac, output + offset, len);
|
|
|
|
offset += len;
|
|
}
|
|
|
|
l_checksum_free(hmac);
|
|
|
|
return true;
|
|
}
|
|
|
|
bool wsc_pin_is_valid(const char *pin)
|
|
{
|
|
unsigned int i;
|
|
|
|
for (i = 0; pin[i] >= '0' && pin[i] <= '9'; i++)
|
|
;
|
|
|
|
if (pin[i])
|
|
return false;
|
|
|
|
if (i != 8 && i != 4)
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
/* Takes the first 7 characters of a PIN as input and computes a check digit */
|
|
static char compute_check_digit(const char *pin)
|
|
{
|
|
unsigned int accum = 0;
|
|
unsigned int digit;
|
|
|
|
accum += 3 * ((pin[0] - '0') % 10);
|
|
accum += 1 * ((pin[1] - '0') % 10);
|
|
accum += 3 * ((pin[2] - '0') % 10);
|
|
accum += 1 * ((pin[3] - '0') % 10);
|
|
accum += 3 * ((pin[4] - '0') % 10);
|
|
accum += 1 * ((pin[5] - '0') % 10);
|
|
accum += 3 * ((pin[6] - '0') % 10);
|
|
|
|
digit = (10 - (accum % 10)) % 10;
|
|
return '0' + digit;
|
|
}
|
|
|
|
/*
|
|
* Validates the checksum digit and returns true if valid. Assumes that the
|
|
* input is an 8-byte PIN already validated by wsc_pin_is_valid()
|
|
*/
|
|
bool wsc_pin_is_checksum_valid(const char *pin)
|
|
{
|
|
char digit = compute_check_digit(pin);
|
|
return pin[7] == digit;
|
|
}
|
|
|
|
/*
|
|
* Generate an 8 character PIN string into buffer given by @pin. @pin must be
|
|
* at least 9 bytes long to account for the nul character.
|
|
*/
|
|
bool wsc_pin_generate(char *pin)
|
|
{
|
|
uint32_t random;
|
|
bool ok;
|
|
|
|
ok = l_getrandom(&random, sizeof(random));
|
|
if (!ok)
|
|
return ok;
|
|
|
|
snprintf(pin, 8, "%07u", random);
|
|
pin[7] = compute_check_digit(pin);
|
|
pin[8] = '\0';
|
|
|
|
return true;
|
|
}
|
|
|
|
struct device_type_category_info {
|
|
const char *category_str;
|
|
unsigned int subcategory_max;
|
|
const char **subcategory_str;
|
|
};
|
|
|
|
/* WSC 2.0.5, Table 41 strings adapted to IWD DBus enum convention */
|
|
struct device_type_category_info device_type_categories[] = {
|
|
[1] = {
|
|
"computer",
|
|
10,
|
|
(const char *[]) {
|
|
[1] = "pc",
|
|
[2] = "server",
|
|
[3] = "media-center",
|
|
[4] = "ultra-mobile-pc",
|
|
[5] = "notebook",
|
|
[6] = "desktop",
|
|
[7] = "mobile-internet-device",
|
|
[8] = "netbook",
|
|
[9] = "tablet",
|
|
[10] = "ultrabook",
|
|
},
|
|
},
|
|
[2] = {
|
|
"input-device",
|
|
9,
|
|
(const char *[]) {
|
|
[1] = "keyboard",
|
|
[2] = "mouse",
|
|
[3] = "joystick",
|
|
[4] = "trackball",
|
|
[5] = "gaming-controller",
|
|
[6] = "remote",
|
|
[7] = "touchscreen",
|
|
[8] = "biometric-reader",
|
|
[9] = "barcode-reader",
|
|
},
|
|
},
|
|
[3] = {
|
|
"printer-scanner",
|
|
5,
|
|
(const char *[]) {
|
|
[1] = "printer-print-server",
|
|
[2] = "scanner",
|
|
[3] = "fax",
|
|
[4] = "copier",
|
|
[5] = "printer-scanner-fax-copier",
|
|
},
|
|
},
|
|
[4] = {
|
|
"camera",
|
|
4,
|
|
(const char *[]) {
|
|
[1] = "digital-still-camera",
|
|
[2] = "video-camera",
|
|
[3] = "web-camera",
|
|
[4] = "security-camera",
|
|
},
|
|
},
|
|
[5] = {
|
|
"storage",
|
|
1,
|
|
(const char *[]) {
|
|
[1] = "nas",
|
|
},
|
|
},
|
|
[6] = {
|
|
"network-infrastructure",
|
|
5,
|
|
(const char *[]) {
|
|
[1] = "ap",
|
|
[2] = "router",
|
|
[3] = "switch",
|
|
[4] = "gateway",
|
|
[5] = "bridge",
|
|
},
|
|
},
|
|
[7] = {
|
|
"display",
|
|
4,
|
|
(const char *[]) {
|
|
[1] = "television",
|
|
[2] = "electronic-picture-frame",
|
|
[3] = "projector",
|
|
[4] = "monitor",
|
|
},
|
|
},
|
|
[8] = {
|
|
"multimedia-device",
|
|
6,
|
|
(const char *[]) {
|
|
[1] = "dar",
|
|
[2] = "pvr",
|
|
[3] = "mcx",
|
|
[4] = "set-top-box",
|
|
[5] = "media-server-adapter-extender",
|
|
[6] = "portable-video-player",
|
|
},
|
|
},
|
|
[9] = {
|
|
"gaming-device",
|
|
5,
|
|
(const char *[]) {
|
|
[1] = "xbox",
|
|
[2] = "xbox360",
|
|
[3] = "playstation",
|
|
[4] = "game-console-adapter",
|
|
[5] = "portable-gaming-device",
|
|
},
|
|
},
|
|
[10] = {
|
|
"telephone",
|
|
5,
|
|
(const char *[]) {
|
|
[1] = "windows-mobile",
|
|
[2] = "single-mode-phone",
|
|
[3] = "dual-mode-phone",
|
|
[4] = "single-mode-smartphone",
|
|
[5] = "dual-mode-smartphone",
|
|
},
|
|
},
|
|
[11] = {
|
|
"audio-device",
|
|
7,
|
|
(const char *[]) {
|
|
[1] = "audio-tuner-receiver",
|
|
[2] = "speakers",
|
|
[3] = "portable-music-player",
|
|
[4] = "headset",
|
|
[5] = "headphones",
|
|
[6] = "microphone",
|
|
[7] = "home-theater-system",
|
|
},
|
|
},
|
|
[12] = {
|
|
"docking-device",
|
|
2,
|
|
(const char *[]) {
|
|
[1] = "computer-docking-station",
|
|
[2] = "media-kiosk",
|
|
},
|
|
},
|
|
};
|
|
|
|
bool wsc_device_type_to_dbus_str(const struct wsc_primary_device_type *val,
|
|
const char **category_str,
|
|
const char **subcategory_str)
|
|
{
|
|
struct device_type_category_info *cat;
|
|
|
|
if (val->category >= L_ARRAY_SIZE(device_type_categories))
|
|
return false;
|
|
|
|
cat = &device_type_categories[val->category];
|
|
|
|
if (!cat->category_str)
|
|
return false;
|
|
|
|
if (category_str)
|
|
*category_str = cat->category_str;
|
|
|
|
if (!subcategory_str)
|
|
return true;
|
|
|
|
if (memcmp(val->oui, microsoft_oui, 3) || val->oui_type != 4)
|
|
*subcategory_str = NULL; /* Vendor-specific */
|
|
else if (val->subcategory <= cat->subcategory_max &&
|
|
cat->subcategory_str[val->subcategory])
|
|
*subcategory_str = cat->subcategory_str[val->subcategory];
|
|
else
|
|
*subcategory_str = NULL; /* Unknown */
|
|
|
|
return true;
|
|
}
|
|
|
|
bool wsc_device_type_from_subcategory_str(struct wsc_primary_device_type *out,
|
|
const char *subcategory_str)
|
|
{
|
|
struct device_type_category_info *cat = device_type_categories;
|
|
unsigned int i;
|
|
|
|
for (i = 1; i < L_ARRAY_SIZE(device_type_categories); i++, cat++) {
|
|
unsigned int j;
|
|
|
|
for (j = 1; j <= cat->subcategory_max; j++)
|
|
if (!strcasecmp(subcategory_str,
|
|
cat->subcategory_str[j])) {
|
|
out->category = i;
|
|
memcpy(out->oui, microsoft_oui, 3);
|
|
out->oui_type = 4;
|
|
out->subcategory = j;
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|