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luban-lite/bsp/peripheral/wireless/atbm603x/net/wpa/wps/wps_registrar.c
刘可亮 8bca5e8332 v1.0.4
2024-04-03 16:40:57 +08:00

2706 lines
73 KiB
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/**************************************************************************************************************
* altobeam IOT Wi-Fi
*
* Copyright (c) 2018, altobeam.inc All rights reserved.
*
* The source code contains proprietary information of AltoBeam, and shall not be distributed,
* copied, reproduced, or disclosed in whole or in part without prior written permission of AltoBeam.
*****************************************************************************************************************/
#include "atbm_hal.h"
#include "wps_dev_attr.h"
#include "wpa_debug.h"
#ifndef CONFIG_WPS_STRICT
#define WPS_WORKAROUNDS
#endif /* CONFIG_WPS_STRICT */
#define wps_free_nfc_pw_tokens(t, p) do { } while (0)
extern unsigned char * atbmwifi_base64_encode(unsigned char *src, atbm_size_t len,
atbm_size_t *out_len);
extern int atbmwifi_wpa_snprintf_hex(char *buf, atbm_size_t buf_size, const atbm_uint8 *data, atbm_size_t len);
extern int atbmwifi_ap_start_beacon(struct atbmwifi_vif *priv);
struct wps_registrar_device {
struct wps_registrar_device *next;
struct wps_device_data dev;
atbm_uint8 uuid[WPS_UUID_LEN];
};
struct wps_registrar {
struct wps_context *wps;
atbm_uint8 pbc;
atbm_uint8 selected_registrar;
atbm_uint8 skip_cred_build;
atbm_uint8 disable_auto_conf;
atbm_uint8 sel_reg_union;
//atbm_uint8 sel_reg_union;
atbm_uint8 sel_reg_dev_password_id_override;
atbm_uint8 sel_reg_config_methods_override;
atbm_uint8 static_wep_only;
atbm_uint8 force_pbc_overlap;
int (*new_psk_cb)(void *ctx, const atbm_uint8 *mac_addr, const atbm_uint8 *psk,
atbm_size_t psk_len);
int (*set_ie_cb)(void *ctx, struct wpabuf *beacon_ie,
struct wpabuf *probe_resp_ie);
void (*pin_needed_cb)(void *ctx, const atbm_uint8 *uuid_e,
const struct wps_device_data *dev);
void (*reg_success_cb)(void *ctx, const atbm_uint8 *mac_addr,
const atbm_uint8 *uuid_e, const atbm_uint8 *dev_pw,
atbm_size_t dev_pw_len);
void (*set_sel_reg_cb)(void *ctx, int sel_reg, atbm_uint16 dev_passwd_id,
atbm_uint16 sel_reg_config_methods);
void (*enrollee_seen_cb)(void *ctx, const atbm_uint8 *addr, const atbm_uint8 *uuid_e,
const atbm_uint8 *pri_dev_type, atbm_uint16 config_methods,
atbm_uint16 dev_password_id, atbm_uint8 request_type,
const char *dev_name);
void *cb_ctx;
struct wpabuf *extra_cred;
// int dualband;
//struct wps_registrar_device *devices;
//atbm_uint8 authorized_macs[WPS_MAX_AUTHORIZED_MACS][ATBM_ETH_ALEN];
//atbm_uint8 authorized_macs_union[WPS_MAX_AUTHORIZED_MACS][ATBM_ETH_ALEN];
atbm_uint8 p2p_dev_addr[ATBM_ETH_ALEN];
};
static int wps_set_ie(struct wps_registrar *reg);
static atbm_void wps_registrar_pbc_timeout(void *eloop_ctx, atbm_void *timeout_ctx);
static atbm_void wps_registrar_set_selected_timeout(void *eloop_ctx,
atbm_void *timeout_ctx);
#if 0
static atbm_void wps_free_devices(struct wps_registrar_device *dev)
{
struct wps_registrar_device *prev;
while (dev) {
prev = dev;
dev = dev->next;
wps_device_data_free(&prev->dev);
atbm_kfree(prev);
}
}
static struct wps_registrar_device * wps_device_get(struct wps_registrar *reg,
const atbm_uint8 *addr)
{
struct wps_registrar_device *dev;
for (dev = reg->devices; dev; dev = dev->next) {
if (atbm_memcmp(dev->dev.mac_addr, addr, ATBM_ETH_ALEN) == 0)
return dev;
}
return NULL;
}
static atbm_void wps_device_clone_data(struct wps_device_data *dst,
struct wps_device_data *src)
{
atbm_memcpy(dst->mac_addr, src->mac_addr, ATBM_ETH_ALEN);
atbm_memcpy(dst->pri_dev_type, src->pri_dev_type, WPS_DEV_TYPE_LEN);
#define WPS_STRDUP(n) \
atbm_kfree(dst->n); \
dst->n = src->n ? strdup(src->n) : NULL
WPS_STRDUP(device_name);
WPS_STRDUP(manufacturer);
WPS_STRDUP(model_name);
WPS_STRDUP(model_number);
WPS_STRDUP(serial_number);
#undef WPS_STRDUP
}
int wps_device_store(struct wps_registrar *reg,
struct wps_device_data *dev, const atbm_uint8 *uuid)
{
struct wps_registrar_device *d;
d = wps_device_get(reg, dev->mac_addr);
if (d == NULL) {
d = (struct wps_registrar_device *)atbm_kzalloc(sizeof(*d), GFP_KERNEL);
if (d == NULL)
return -1;
d->next = reg->devices;
reg->devices = d;
}
wps_device_clone_data(&d->dev, dev);
atbm_memcpy(d->uuid, uuid, WPS_UUID_LEN);
return 0;
}
#endif //0
int wps_registrar_pbc_overlap(struct wps_registrar *reg,
const atbm_uint8 *addr, const atbm_uint8 *uuid_e)
{
return 0;
}
static int wps_build_wps_state(struct wps_context *wps, struct wpabuf *msg)
{
wpa_printf(MSG_DEBUG, "WPS: * Wi-Fi Protected Setup State (%d)",
wps->wps_state);
wpabuf_put_be16(msg, ATTR_WPS_STATE);
wpabuf_put_be16(msg, 1);
wpabuf_put_u8(msg, wps->wps_state);
return 0;
}
static int wps_build_ap_setup_locked(struct wps_context *wps,
struct wpabuf *msg)
{
if (wps->ap_setup_locked && wps->ap_setup_locked != 2) {
wpa_printf(MSG_DEBUG, "WPS: * AP Setup Locked");
wpabuf_put_be16(msg, ATTR_AP_SETUP_LOCKED);
wpabuf_put_be16(msg, 1);
wpabuf_put_u8(msg, 1);
}
return 0;
}
static int wps_build_selected_registrar(struct wps_registrar *reg,
struct wpabuf *msg)
{
if (!reg->sel_reg_union)
return 0;
wpa_printf(MSG_DEBUG, "WPS: * Selected Registrar");
wpabuf_put_be16(msg, ATTR_SELECTED_REGISTRAR);
wpabuf_put_be16(msg, 1);
wpabuf_put_u8(msg, 1);
return 0;
}
static int wps_build_sel_reg_dev_password_id(struct wps_registrar *reg,
struct wpabuf *msg)
{
atbm_uint16 id = reg->pbc ? DEV_PW_PUSHBUTTON : DEV_PW_DEFAULT;
if (!reg->sel_reg_union)
return 0;
if (reg->sel_reg_dev_password_id_override >= 0)
id = reg->sel_reg_dev_password_id_override;
wpa_printf(MSG_DEBUG, "WPS: * Device Password ID (%d)", id);
wpabuf_put_be16(msg, ATTR_DEV_PASSWORD_ID);
wpabuf_put_be16(msg, 2);
wpabuf_put_be16(msg, id);
return 0;
}
/*
static int wps_build_sel_pbc_reg_uuid_e(struct wps_registrar *reg,
struct wpabuf *msg)
{
atbm_uint16 id = reg->pbc ? DEV_PW_PUSHBUTTON : DEV_PW_DEFAULT;
if (!reg->sel_reg_union)
return 0;
if (reg->sel_reg_dev_password_id_override >= 0)
id = reg->sel_reg_dev_password_id_override;
if (id != DEV_PW_PUSHBUTTON || !reg->dualband)
return 0;
return wps_build_uuid_e(msg, reg->wps->uuid);
}
*/
static atbm_void wps_set_pushbutton(atbm_uint16 *methods, atbm_uint16 conf_methods)
{
*methods |= WPS_CONFIG_PUSHBUTTON;
#if CONFIG_WPS2
if ((conf_methods & WPS_CONFIG_VIRT_PUSHBUTTON) ==
WPS_CONFIG_VIRT_PUSHBUTTON)
*methods |= WPS_CONFIG_VIRT_PUSHBUTTON;
if ((conf_methods & WPS_CONFIG_PHY_PUSHBUTTON) ==
WPS_CONFIG_PHY_PUSHBUTTON)
*methods |= WPS_CONFIG_PHY_PUSHBUTTON;
if ((*methods & WPS_CONFIG_VIRT_PUSHBUTTON) !=
WPS_CONFIG_VIRT_PUSHBUTTON &&
(*methods & WPS_CONFIG_PHY_PUSHBUTTON) !=
WPS_CONFIG_PHY_PUSHBUTTON) {
/*
* Required to include virtual/physical flag, but we were not
* configured with push button type, so have to default to one
* of them.
*/
*methods |= WPS_CONFIG_PHY_PUSHBUTTON;
}
#endif /* CONFIG_WPS2 */
}
static int wps_build_sel_reg_config_methods(struct wps_registrar *reg,
struct wpabuf *msg)
{
atbm_uint16 methods;
if (!reg->sel_reg_union)
return 0;
methods = reg->wps->config_methods;
methods &= ~WPS_CONFIG_PUSHBUTTON;
#if CONFIG_WPS2
methods &= ~(WPS_CONFIG_VIRT_PUSHBUTTON |
WPS_CONFIG_PHY_PUSHBUTTON);
#endif /* CONFIG_WPS2 */
if (reg->pbc)
wps_set_pushbutton(&methods, reg->wps->config_methods);
if (reg->sel_reg_config_methods_override >= 0)
methods = reg->sel_reg_config_methods_override;
wpa_printf(MSG_DEBUG, "WPS: * Selected Registrar Config Methods (%x)",
methods);
wpabuf_put_be16(msg, ATTR_SELECTED_REGISTRAR_CONFIG_METHODS);
wpabuf_put_be16(msg, 2);
wpabuf_put_be16(msg, methods);
return 0;
}
static int wps_build_probe_config_methods(struct wps_registrar *reg,
struct wpabuf *msg)
{
atbm_uint16 methods;
/*
* These are the methods that the AP supports as an Enrollee for adding
* external Registrars.
*/
/*rsharma for WFD*/
methods = reg->wps->config_methods;
// methods = reg->wps->config_methods & ~WPS_CONFIG_PUSHBUTTON;
//#if CONFIG_WPS2
/// methods &= ~(WPS_CONFIG_VIRT_PUSHBUTTON |
// WPS_CONFIG_PHY_PUSHBUTTON);
//#endif /* CONFIG_WPS2 */
wpa_printf(MSG_DEBUG, "WPS: * Config Methods (%x)", methods);
wpabuf_put_be16(msg, ATTR_CONFIG_METHODS);
wpabuf_put_be16(msg, 2);
wpabuf_put_be16(msg, methods);
return 0;
}
static int wps_build_config_methods_r(struct wps_registrar *reg,
struct wpabuf *msg)
{
return wps_build_config_methods(msg, reg->wps->config_methods);
}
/**
* wps_registrar_init - Initialize WPS Registrar data
* @wps: Pointer to longterm WPS context
* @cfg: Registrar configuration
* Returns: Pointer to allocated Registrar data or %NULL on failure
*
* This function is used to initialize WPS Registrar functionality. It can be
* used for a single Registrar run (e.g., when run in a supplicant) or multiple
* runs (e.g., when run as an internal Registrar in an AP). Caller is
* responsible for freeing the returned data with wps_registrar_deinit() when
* Registrar functionality is not needed anymore.
*/
struct wps_registrar *
wps_registrar_init(struct wps_context *wps,struct wps_registrar_config *cfg)
{
struct wps_registrar *reg = (struct wps_registrar *)atbm_kzalloc(sizeof(*reg), GFP_KERNEL);
if (reg == NULL)
return NULL;
reg->wps = wps;
reg->cb_ctx = cfg->cb_ctx;
reg->skip_cred_build = cfg->skip_cred_build;
if (cfg->extra_cred) {
reg->extra_cred = wpabuf_alloc_copy(cfg->extra_cred,
cfg->extra_cred_len);
if (reg->extra_cred == NULL) {
atbm_kfree(reg);
return NULL;
}
}
reg->disable_auto_conf = cfg->disable_auto_conf;
reg->sel_reg_dev_password_id_override = -1;
reg->sel_reg_config_methods_override = -1;
reg->static_wep_only = cfg->static_wep_only;
//reg->dualband = cfg->dualband;
return reg;
}
/**
* wps_registrar_deinit - Deinitialize WPS Registrar data
* @reg: Registrar data from wps_registrar_init()
*/
atbm_void wps_registrar_deinit(struct wps_registrar *reg)
{
if (reg == NULL)
return;
atbmwifi_eloop_cancel_timeout(wps_registrar_pbc_timeout, reg, NULL);
atbmwifi_eloop_cancel_timeout(wps_registrar_set_selected_timeout, reg, NULL);
wpabuf_free(reg->extra_cred);
atbm_kfree(reg);
}
int wps_registrar_add_pin(struct wps_registrar *reg,const atbm_uint8 *addr)
{
//wpa_printf(MSG_DEBUG, "WPS: A new PIN configured ");
//wpa_hexdump(MSG_DEBUG, "WPS: UUID", uuid, WPS_UUID_LEN);
//wpa_hexdump_ascii_key(MSG_DEBUG, "WPS: PIN", pin, pin_len);
reg->selected_registrar = 1;
reg->pbc = 0;
wps_registrar_selected_registrar_changed(reg, 0);
atbmwifi_eloop_cancel_timeout(wps_registrar_set_selected_timeout, reg, NULL);
atbmwifi_eloop_register_timeout(WPS_PBC_WALK_TIME, 0,
wps_registrar_set_selected_timeout,
reg, NULL);
return 0;
}
/* static atbm_void wps_registrar_remove_pin(struct wps_registrar *reg)
{
// atbm_uint8 bcast[ATBM_ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
wps_registrar_selected_registrar_changed(reg, 0);
}*/
static atbm_void wps_registrar_stop_pbc(struct wps_registrar *reg)
{
reg->selected_registrar = 0;
reg->pbc = 0;
atbm_memset(reg->p2p_dev_addr, 0, ATBM_ETH_ALEN);
wps_registrar_selected_registrar_changed(reg, 0);
}
static atbm_void wps_registrar_pbc_timeout(void *eloop_ctx, atbm_void *timeout_ctx)
{
struct wps_registrar *reg = eloop_ctx;
wpa_printf(MSG_DEBUG, "WPS: PBC timed out - disable PBC mode");
wps_pbc_timeout_event(reg->wps);
wps_registrar_stop_pbc(reg);
}
/**
* wps_registrar_button_pushed - Notify Registrar that AP button was pushed
* @reg: Registrar data from wps_registrar_init()
* @p2p_dev_addr: Limit allowed PBC devices to the specified P2P device, %NULL
* indicates no such filtering
* Returns: 0 on success, -1 on failure, -2 on session overlap
*
* This function is called on an AP when a push button is pushed to activate
* PBC mode. The PBC mode will be stopped after walk time (2 minutes) timeout
* or when a PBC registration is completed. If more than one Enrollee in active
* PBC mode has been detected during the monitor time (previous 2 minutes), the
* PBC mode is not activated and -2 is returned to indicate session overlap.
* This is skipped if a specific Enrollee is selected.
*/
int wps_registrar_button_pushed(struct wps_registrar *reg,
const atbm_uint8 *p2p_dev_addr)
{
if (p2p_dev_addr == NULL &&
wps_registrar_pbc_overlap(reg, NULL, NULL)) {
wpa_printf(MSG_ERROR, "WPS: PBC overlap - do not start PBC "
"mode");
wps_pbc_overlap_event(reg->wps);
return -2;
}
wpa_printf(MSG_DEBUG, "WPS: Button pushed - PBC mode started");
reg->force_pbc_overlap = 0;
reg->selected_registrar = 1;
reg->pbc = 1;
if (p2p_dev_addr)
atbm_memcpy(reg->p2p_dev_addr, p2p_dev_addr, ATBM_ETH_ALEN);
else
atbm_memset(reg->p2p_dev_addr, 0, ATBM_ETH_ALEN);
//wps_registrar_add_authorized_mac(reg,
// (atbm_uint8 *) "\xff\xff\xff\xff\xff\xff");
wps_registrar_selected_registrar_changed(reg, 0);
atbmwifi_eloop_cancel_timeout(wps_registrar_set_selected_timeout, reg, NULL);
atbmwifi_eloop_cancel_timeout(wps_registrar_pbc_timeout, reg, NULL);
atbmwifi_eloop_register_timeout(120, 0, wps_registrar_pbc_timeout,
reg, NULL);
return 0;
}
static atbm_void wps_registrar_pbc_completed(struct wps_registrar *reg)
{
wpa_printf(MSG_DEBUG, "WPS: PBC completed - stopping PBC mode");
atbmwifi_eloop_cancel_timeout(wps_registrar_pbc_timeout, reg, NULL);
wps_registrar_stop_pbc(reg);
}
static atbm_void wps_registrar_pin_completed(struct wps_registrar *reg)
{
wpa_printf(MSG_ALWAYS, "WPS: PIN completed internal Registrar");
atbmwifi_eloop_cancel_timeout(wps_registrar_set_selected_timeout, reg, NULL);
reg->selected_registrar = 0;
wps_registrar_selected_registrar_changed(reg, 0);
}
atbm_void wps_registrar_complete(struct wps_registrar *registrar, const atbm_uint8 *uuid_e,
const atbm_uint8 *dev_pw, atbm_size_t dev_pw_len)
{
if (registrar->pbc) {
wps_registrar_pbc_completed(registrar);
} else {
wps_registrar_pin_completed(registrar);
}
/*
if (dev_pw &&
wps_registrar_invalidate_wildcard_pin(registrar, dev_pw,
dev_pw_len) == 0) {
wpa_hexdump_key(MSG_DEBUG, "WPS: Invalidated wildcard PIN",
dev_pw, dev_pw_len);
}*/
}
int wps_registrar_wps_cancel(struct wps_registrar *reg)
{
if (reg->pbc) {
wpa_printf(MSG_DEBUG, "WPS: PBC is set - cancelling it");
wps_registrar_pbc_timeout(reg, NULL);
atbmwifi_eloop_cancel_timeout(wps_registrar_pbc_timeout, reg, NULL);
return 1;
} else if (reg->selected_registrar) {
/* PIN Method */
wpa_printf(MSG_DEBUG, "WPS: PIN is set - cancelling it");
wps_registrar_pin_completed(reg);
//wps_registrar_invalidate_wildcard_pin(reg, NULL, 0);
return 1;
}
return 0;
}
/* static atbm_void wps_cb_pin_needed(struct wps_registrar *reg, const atbm_uint8 *uuid_e,
const struct wps_device_data *dev)
{
if (reg->pin_needed_cb == NULL)
return;
reg->pin_needed_cb(reg->cb_ctx, uuid_e, dev);
}*/
static atbm_void wps_cb_reg_success(struct wps_registrar *reg, const atbm_uint8 *mac_addr,
const atbm_uint8 *uuid_e, const atbm_uint8 *dev_pw,
atbm_size_t dev_pw_len)
{
if (reg->reg_success_cb == NULL)
return;
reg->reg_success_cb(reg->cb_ctx, mac_addr, uuid_e, dev_pw, dev_pw_len);
}
static atbm_void wps_cb_set_sel_reg(struct wps_registrar *reg)
{
atbm_uint16 methods = 0;
if (reg->set_sel_reg_cb == NULL)
return;
if (reg->selected_registrar) {
methods = reg->wps->config_methods & ~WPS_CONFIG_PUSHBUTTON;
#if CONFIG_WPS2
methods &= ~(WPS_CONFIG_VIRT_PUSHBUTTON |
WPS_CONFIG_PHY_PUSHBUTTON);
#endif /* CONFIG_WPS2 */
if (reg->pbc)
wps_set_pushbutton(&methods, reg->wps->config_methods);
}
wpa_printf(MSG_ALWAYS, "WPS: wps_cb_set_sel_reg: sel_reg=%d "
"config_methods=0x%x pbc=%d methods=0x%x",
reg->selected_registrar, reg->wps->config_methods,
reg->pbc, methods);
reg->set_sel_reg_cb(reg->cb_ctx, reg->selected_registrar,
reg->pbc ? DEV_PW_PUSHBUTTON : DEV_PW_DEFAULT,
methods);
}
static int wps_set_ie(struct wps_registrar *reg)
{
struct wpabuf *beacon;
struct wpabuf *probe;
//const atbm_uint8 *auth_macs;
//atbm_size_t count;
atbm_size_t vendor_len = 0;
int i;
struct hostapd_data *hapd = reg->cb_ctx;
// if (reg->selected_registrar == 0)
// goto out;
for (i = 0; i < MAX_WPS_VENDOR_EXTENSIONS; i++) {
if (reg->wps->dev.vendor_ext[i]) {
vendor_len += 2 + 2;
vendor_len += wpabuf_len(reg->wps->dev.vendor_ext[i]);
}
}
beacon = wpabuf_alloc(400 + vendor_len);
if (beacon == NULL)
return -1;
probe = wpabuf_alloc(500 + vendor_len);
if (probe == NULL) {
wpabuf_free(beacon);
return -1;
}
//auth_macs = wps_authorized_macs(reg, &count);
wpa_printf(MSG_DEBUG, "WPS: Build Beacon IEs");
if (wps_build_version(beacon) ||
wps_build_wps_state(reg->wps, beacon) ||
wps_build_ap_setup_locked(reg->wps, beacon) ||
wps_build_selected_registrar(reg, beacon) ||
wps_build_sel_reg_dev_password_id(reg, beacon) ||
wps_build_sel_reg_config_methods(reg, beacon) ||
// wps_build_sel_pbc_reg_uuid_e(reg, beacon) ||
// (reg->dualband && wps_build_rf_bands(&reg->wps->dev, beacon)) ||
// wps_build_wfa_ext(beacon, 0, auth_macs, count) ||
wps_build_vendor_ext(&reg->wps->dev, beacon)) {
wpabuf_free(beacon);
wpabuf_free(probe);
return -1;
}
#if CONFIG_P2P
if (wps_build_dev_name(&reg->wps->dev, beacon) ||
wps_build_primary_dev_type(&reg->wps->dev, beacon)) {
wpabuf_free(beacon);
wpabuf_free(probe);
return -1;
}
#endif /* CONFIG_P2P */
wpa_printf(MSG_DEBUG, "WPS: Build Probe Response IEs");
if (wps_build_version(probe) ||
wps_build_wps_state(reg->wps, probe) ||
wps_build_ap_setup_locked(reg->wps, probe) ||
wps_build_selected_registrar(reg, probe) ||
wps_build_sel_reg_dev_password_id(reg, probe) ||
wps_build_sel_reg_config_methods(reg, probe) ||
wps_build_resp_type(probe, reg->wps->ap ? WPS_RESP_AP :
WPS_RESP_REGISTRAR) ||
wps_build_uuid_e(probe, reg->wps->uuid) ||
wps_build_device_attrs(&reg->wps->dev, probe) ||
wps_build_probe_config_methods(reg, probe) ||
wps_build_rf_bands(&reg->wps->dev, probe) ||
// wps_build_wfa_ext(probe, 0, auth_macs, count) ||
wps_build_vendor_ext(&reg->wps->dev, probe)) {
wpabuf_free(beacon);
wpabuf_free(probe);
return -1;
}
beacon = wps_ie_encapsulate(beacon);
probe = wps_ie_encapsulate(probe);
if (!beacon || !probe) {
wpabuf_free(beacon);
wpabuf_free(probe);
return -1;
}
if (reg->static_wep_only) {
/*
* Windows XP and Vista clients can get confused about
* EAP-Identity/Request when they probe the network with
* EAPOL-Start. In such a case, they may assume the network is
* using IEEE 802.1X and prompt user for a certificate while
* the correct (non-WPS) behavior would be to ask for the
* static WEP key. As a workaround, use Microsoft Provisioning
* IE to advertise that legacy 802.1X is not supported.
*/
const atbm_uint8 ms_wps[7] = {
ATBM_WLAN_EID_VENDOR_SPECIFIC, 5,
/* Microsoft Provisioning IE (00:50:f2:5) */
0x00, 0x50, 0xf2, 5,
0x00 /* no legacy 802.1X or MS WPS */
};
wpa_printf(MSG_DEBUG, "WPS: Add Microsoft Provisioning IE "
"into Beacon/Probe Response frames");
wpabuf_put_data(beacon, ms_wps, sizeof(ms_wps));
wpabuf_put_data(probe, ms_wps, sizeof(ms_wps));
}
wpabuf_free(hapd->wps_beacon_ie);
hapd->wps_beacon_ie = beacon;
hapd->priv->wps_beacon_ie = hapd->wps_beacon_ie->buf;
hapd->priv->wps_beacon_ie_len = hapd->wps_beacon_ie->used;
wpabuf_free(hapd->wps_probe_resp_ie);
hapd->wps_probe_resp_ie = probe;
hapd->priv->wps_probe_resp_ie = hapd->wps_probe_resp_ie->buf;
hapd->priv->wps_probe_resp_ie_len = hapd->wps_probe_resp_ie->used;
wpa_printf(MSG_DEBUG, "WPS: atbmwifi_ap_start_beacon\n");
wpa_comm_init_extra_ie(hapd->priv);
atbmwifi_ap_start_beacon(hapd->priv);
return 0;
out:
wpabuf_free(hapd->wps_beacon_ie);
hapd->wps_beacon_ie = NULL;
hapd->priv->wps_beacon_ie = NULL;
hapd->priv->wps_beacon_ie_len = 0;
wpabuf_free(hapd->wps_probe_resp_ie);
hapd->wps_probe_resp_ie = NULL;
hapd->priv->wps_probe_resp_ie = NULL;
hapd->priv->wps_probe_resp_ie_len = 0;
wpa_printf(MSG_DEBUG, "WPS: atbmwifi_ap_start_beacon, clear wps ie\n");
hostapd_init_extra_ie(hapd->priv);
wpa_printf(MSG_DEBUG,"WPS: atbmwifi_ap_start_beacon, set wpa ie\n");
atbmwifi_ap_start_beacon(hapd->priv);
atbm_kfree(hapd->priv->extra_ie);
hapd->priv->extra_ie = NULL;
hapd->priv->extra_ie_len = 0;
return 0;
}
static int wps_build_uuid_r(struct wps_data *wps, struct wpabuf *msg)
{
wpa_printf(MSG_DEBUG, "WPS: * UUID-R");
wpabuf_put_be16(msg, ATTR_UUID_R);
wpabuf_put_be16(msg, WPS_UUID_LEN);
wpabuf_put_data(msg, wps->uuid_r, WPS_UUID_LEN);
return 0;
}
static int wps_build_r_hash(struct wps_data *wps, struct wpabuf *msg)
{
atbm_uint8 *hash;
const atbm_uint8 *addr[4];
atbm_size_t len[4];
if (atbmwifi_os_get_random(wps->snonce, 2 * WPS_SECRET_NONCE_LEN) < 0)
return -1;
wpa_hexdump(MSG_DEBUG, "WPS: R-S1", wps->snonce, WPS_SECRET_NONCE_LEN);
wpa_hexdump(MSG_DEBUG, "WPS: R-S2",
wps->snonce + WPS_SECRET_NONCE_LEN, WPS_SECRET_NONCE_LEN);
if (wps->dh_pubkey_e == NULL || wps->dh_pubkey_r == NULL) {
wpa_printf(MSG_ERROR, "WPS: DH public keys not available for "
"R-Hash derivation");
return -1;
}
wpa_printf(MSG_DEBUG, "WPS: * R-Hash1");
wpabuf_put_be16(msg, ATTR_R_HASH1);
wpabuf_put_be16(msg, SHA256_MAC_LEN);
hash = wpabuf_put(msg, SHA256_MAC_LEN);
/* R-Hash1 = HMAC_AuthKey(R-S1 || PSK1 || PK_E || PK_R) */
addr[0] = wps->snonce;
len[0] = WPS_SECRET_NONCE_LEN;
addr[1] = wps->psk1;
len[1] = WPS_PSK_LEN;
addr[2] = wpabuf_head(wps->dh_pubkey_e);
len[2] = wpabuf_len(wps->dh_pubkey_e);
addr[3] = wpabuf_head(wps->dh_pubkey_r);
len[3] = wpabuf_len(wps->dh_pubkey_r);
atbmwifi_hmac_sha256_vector(wps->authkey, WPS_AUTHKEY_LEN, 4, addr, len, hash);
wpa_hexdump(MSG_DEBUG, "WPS: R-Hash1", hash, SHA256_MAC_LEN);
wpa_printf(MSG_DEBUG, "WPS: * R-Hash2");
wpabuf_put_be16(msg, ATTR_R_HASH2);
wpabuf_put_be16(msg, SHA256_MAC_LEN);
hash = wpabuf_put(msg, SHA256_MAC_LEN);
/* R-Hash2 = HMAC_AuthKey(R-S2 || PSK2 || PK_E || PK_R) */
addr[0] = wps->snonce + WPS_SECRET_NONCE_LEN;
addr[1] = wps->psk2;
atbmwifi_hmac_sha256_vector(wps->authkey, WPS_AUTHKEY_LEN, 4, addr, len, hash);
wpa_hexdump(MSG_DEBUG, "WPS: R-Hash2", hash, SHA256_MAC_LEN);
return 0;
}
static int wps_build_r_snonce1(struct wps_data *wps, struct wpabuf *msg)
{
wpa_printf(MSG_DEBUG, "WPS: * R-SNonce1");
wpabuf_put_be16(msg, ATTR_R_SNONCE1);
wpabuf_put_be16(msg, WPS_SECRET_NONCE_LEN);
wpabuf_put_data(msg, wps->snonce, WPS_SECRET_NONCE_LEN);
return 0;
}
static int wps_build_cred_network_idx(struct wpabuf *msg,
const struct wps_credential *cred)
{
wpa_printf(MSG_DEBUG, "WPS: * Network Index (1)");
wpabuf_put_be16(msg, ATTR_NETWORK_INDEX);
wpabuf_put_be16(msg, 1);
wpabuf_put_u8(msg, 1);
return 0;
}
static int wps_build_cred_ssid(struct wpabuf *msg,
const struct wps_credential *cred)
{
wpa_printf(MSG_DEBUG, "WPS: * SSID");
wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID for Credential",
cred->ssid, cred->ssid_len);
wpabuf_put_be16(msg, ATTR_SSID);
wpabuf_put_be16(msg, cred->ssid_len);
wpabuf_put_data(msg, cred->ssid, cred->ssid_len);
return 0;
}
static int wps_build_r_snonce2(struct wps_data *wps, struct wpabuf *msg)
{
wpa_printf(MSG_DEBUG, "WPS: * R-SNonce2");
wpabuf_put_be16(msg, ATTR_R_SNONCE2);
wpabuf_put_be16(msg, WPS_SECRET_NONCE_LEN);
wpabuf_put_data(msg, wps->snonce + WPS_SECRET_NONCE_LEN,
WPS_SECRET_NONCE_LEN);
return 0;
}
static int wps_build_cred_auth_type(struct wpabuf *msg,
const struct wps_credential *cred)
{
wpa_printf(MSG_DEBUG, "WPS: * Authentication Type (0x%x)",
cred->auth_type);
wpabuf_put_be16(msg, ATTR_AUTH_TYPE);
wpabuf_put_be16(msg, 2);
wpabuf_put_be16(msg, cred->auth_type);
return 0;
}
static int wps_build_cred_encr_type(struct wpabuf *msg,
const struct wps_credential *cred)
{
wpa_printf(MSG_DEBUG, "WPS: * Encryption Type (0x%x)",
cred->encr_type);
wpabuf_put_be16(msg, ATTR_ENCR_TYPE);
wpabuf_put_be16(msg, 2);
wpabuf_put_be16(msg, cred->encr_type);
return 0;
}
static int wps_build_cred_network_key(struct wpabuf *msg,
const struct wps_credential *cred)
{
wpa_printf(MSG_DEBUG, "WPS: * Network Key (len=%d)",
(int) cred->key_len);
wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key",
cred->key, cred->key_len);
wpabuf_put_be16(msg, ATTR_NETWORK_KEY);
wpabuf_put_be16(msg, cred->key_len);
wpabuf_put_data(msg, cred->key, cred->key_len);
return 0;
}
static int wps_build_cred_mac_addr(struct wpabuf *msg,
const struct wps_credential *cred)
{
wpa_printf(MSG_DEBUG, "WPS: * MAC Address (" MACSTR ")",
MAC2STR(cred->mac_addr));
wpabuf_put_be16(msg, ATTR_MAC_ADDR);
wpabuf_put_be16(msg, ATBM_ETH_ALEN);
wpabuf_put_data(msg, cred->mac_addr, ATBM_ETH_ALEN);
return 0;
}
static int wps_build_credential(struct wpabuf *msg,
const struct wps_credential *cred)
{
if (wps_build_cred_network_idx(msg, cred) ||
wps_build_cred_ssid(msg, cred) ||
wps_build_cred_auth_type(msg, cred) ||
wps_build_cred_encr_type(msg, cred) ||
wps_build_cred_network_key(msg, cred) ||
wps_build_cred_mac_addr(msg, cred))
return -1;
return 0;
}
int wps_build_cred(struct wps_data *wps, struct wpabuf *msg)
{
struct wpabuf *cred;
if (wps->wps->registrar->skip_cred_build)
goto skip_cred_build;
wpa_printf(MSG_DEBUG, "WPS: * Credential");
if (wps->use_cred) {
atbm_memcpy(&wps->cred, wps->use_cred, sizeof(wps->cred));
goto use_provided;
}
atbm_memset(&wps->cred, 0, sizeof(wps->cred));
atbm_memcpy(wps->cred.ssid, wps->wps->ssid, wps->wps->ssid_len);
wps->cred.ssid_len = wps->wps->ssid_len;
/* Select the best authentication and encryption type */
if (wps->auth_type & WPS_AUTH_WPA2PSK)
wps->auth_type = WPS_AUTH_WPA2PSK;
else if (wps->auth_type & WPS_AUTH_WPAPSK)
wps->auth_type = WPS_AUTH_WPAPSK;
else if (wps->auth_type & WPS_AUTH_OPEN)
wps->auth_type = WPS_AUTH_OPEN;
else if (wps->auth_type & WPS_AUTH_SHARED)
wps->auth_type = WPS_AUTH_SHARED;
else {
wpa_printf(MSG_DEBUG, "WPS: Unsupported auth_type 0x%x",
wps->auth_type);
return -1;
}
wps->cred.auth_type = wps->auth_type;
if (wps->auth_type == WPS_AUTH_WPA2PSK ||
wps->auth_type == WPS_AUTH_WPAPSK) {
if (wps->encr_type & WPS_ENCR_AES)
wps->encr_type = WPS_ENCR_AES;
else if (wps->encr_type & WPS_ENCR_TKIP)
wps->encr_type = WPS_ENCR_TKIP;
else {
wpa_printf(MSG_DEBUG, "WPS: No suitable encryption "
"type for WPA/WPA2");
return -1;
}
} else {
if (wps->encr_type & WPS_ENCR_WEP)
wps->encr_type = WPS_ENCR_WEP;
else if (wps->encr_type & WPS_ENCR_NONE)
wps->encr_type = WPS_ENCR_NONE;
else {
wpa_printf(MSG_DEBUG, "WPS: No suitable encryption "
"type for non-WPA/WPA2 mode");
return -1;
}
}
wps->cred.encr_type = wps->encr_type;
/*
* Set MAC address in the Credential to be the Enrollee's MAC address
*/
atbm_memcpy(wps->cred.mac_addr, wps->mac_addr_e, ATBM_ETH_ALEN);
if (wps->wps->wps_state == WPS_STATE_NOT_CONFIGURED && wps->wps->ap &&
!wps->wps->registrar->disable_auto_conf) {
atbm_uint8 r[16];
/* Generate a random passphrase */
if (atbmwifi_os_get_random(r, sizeof(r)) < 0)
return -1;
atbm_kfree(wps->new_psk);
wps->new_psk = atbmwifi_base64_encode(r, sizeof(r), &wps->new_psk_len);
if (wps->new_psk == NULL)
return -1;
wps->new_psk_len--; /* remove newline */
while (wps->new_psk_len &&
wps->new_psk[wps->new_psk_len - 1] == '=')
wps->new_psk_len--;
wpa_hexdump_ascii_key(MSG_DEBUG, "WPS: Generated passphrase",
wps->new_psk, wps->new_psk_len);
atbm_memcpy(wps->cred.key, wps->new_psk, wps->new_psk_len);
wps->cred.key_len = wps->new_psk_len;
} else if (wps->use_psk_key && wps->wps->psk_set) {
char hex[65];
wpa_printf(MSG_DEBUG, "WPS: Use PSK format for Network Key");
atbmwifi_wpa_snprintf_hex(hex, sizeof(hex), wps->wps->psk, 32);
atbm_memcpy(wps->cred.key, hex, 32 * 2);
wps->cred.key_len = 32 * 2;
} else if (wps->wps->network_key) {
atbm_memcpy(wps->cred.key, wps->wps->network_key,
wps->wps->network_key_len);
wps->cred.key_len = wps->wps->network_key_len;
wpa_printf(MSG_DEBUG, "WPS: Use cred.key for Network Key %s", wps->cred.key);
} else if (wps->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
char hex[65];
/* Generate a random per-device PSK */
atbm_kfree(wps->new_psk);
wps->new_psk_len = 32;
wps->new_psk = atbm_kmalloc(wps->new_psk_len, GFP_KERNEL);
if (wps->new_psk == NULL)
return -1;
if (atbmwifi_os_get_random(wps->new_psk, wps->new_psk_len) < 0) {
atbm_kfree(wps->new_psk);
wps->new_psk = NULL;
return -1;
}
wpa_hexdump_key(MSG_DEBUG, "WPS: Generated per-device PSK",
wps->new_psk, wps->new_psk_len);
atbmwifi_wpa_snprintf_hex(hex, sizeof(hex), wps->new_psk,
wps->new_psk_len);
atbm_memcpy(wps->cred.key, hex, wps->new_psk_len * 2);
wps->cred.key_len = wps->new_psk_len * 2;
}
use_provided:
#ifdef CONFIG_WPS_TESTING
if (wps_testing_dummy_cred)
cred = wpabuf_alloc(200);
else
cred = NULL;
if (cred) {
struct wps_credential dummy;
wpa_printf(MSG_DEBUG, "WPS: Add dummy credential");
atbm_memset(&dummy, 0, sizeof(dummy));
atbm_memcpy(dummy.ssid, "dummy", 5);
dummy.ssid_len = 5;
dummy.auth_type = WPS_AUTH_WPA2PSK;
dummy.encr_type = WPS_ENCR_AES;
atbm_memcpy(dummy.key, "dummy psk", 9);
dummy.key_len = 9;
atbm_memcpy(dummy.mac_addr, wps->mac_addr_e, ATBM_ETH_ALEN);
wps_build_credential(cred, &dummy);
wpa_hexdump_buf(MSG_DEBUG, "WPS: Dummy Credential", cred);
wpabuf_put_be16(msg, ATTR_CRED);
wpabuf_put_be16(msg, wpabuf_len(cred));
wpabuf_put_buf(msg, cred);
wpabuf_free(cred);
}
#endif /* CONFIG_WPS_TESTING */
cred = wpabuf_alloc(200);
if (cred == NULL)
return -1;
if (wps_build_credential(cred, &wps->cred)) {
wpabuf_free(cred);
return -1;
}
wpabuf_put_be16(msg, ATTR_CRED);
wpabuf_put_be16(msg, wpabuf_len(cred));
wpabuf_put_buf(msg, cred);
wpabuf_free(cred);
skip_cred_build:
if (wps->wps->registrar->extra_cred) {
wpa_printf(MSG_DEBUG, "WPS: * Credential (pre-configured)");
wpabuf_put_buf(msg, wps->wps->registrar->extra_cred);
}
return 0;
}
static int wps_build_ap_settings(struct wps_data *wps, struct wpabuf *msg)
{
wpa_printf(MSG_DEBUG, "WPS: * AP Settings");
if (wps_build_credential(msg, &wps->cred))
return -1;
return 0;
}
static struct wpabuf * wps_build_ap_cred(struct wps_data *wps)
{
struct wpabuf *msg, *plain;
msg = wpabuf_alloc(1000);
if (msg == NULL)
return NULL;
plain = wpabuf_alloc(200);
if (plain == NULL) {
wpabuf_free(msg);
return NULL;
}
if (wps_build_ap_settings(wps, plain)) {
wpabuf_free(plain);
wpabuf_free(msg);
return NULL;
}
wpabuf_put_be16(msg, ATTR_CRED);
wpabuf_put_be16(msg, wpabuf_len(plain));
wpabuf_put_buf(msg, plain);
wpabuf_free(plain);
return msg;
}
static struct wpabuf * wps_build_m2(struct wps_data *wps)
{
struct wpabuf *msg;
if (atbmwifi_os_get_random(wps->nonce_r, WPS_NONCE_LEN) < 0)
return NULL;
//wpa_hexdump(MSG_DEBUG, "WPS: Registrar Nonce",
// wps->nonce_r, WPS_NONCE_LEN);
//wpa_hexdump(MSG_DEBUG, "WPS: UUID-R", wps->uuid_r, WPS_UUID_LEN);
wpa_printf(MSG_ALWAYS, "WPS: Building Message M2");
msg = wpabuf_alloc(1000);
if (msg == NULL)
return NULL;
if (wps_build_version(msg) ||
wps_build_msg_type(msg, WPS_M2) ||
wps_build_enrollee_nonce(wps, msg) ||
wps_build_registrar_nonce(wps, msg) ||
wps_build_uuid_r(wps, msg) ||
wps_build_public_key(wps, msg) ||
wps_derive_keys(wps) ||
wps_build_auth_type_flags(wps, msg) ||
wps_build_encr_type_flags(wps, msg) ||
wps_build_conn_type_flags(wps, msg) ||
wps_build_config_methods_r(wps->wps->registrar, msg) ||
wps_build_device_attrs(&wps->wps->dev, msg) ||
wps_build_rf_bands(&wps->wps->dev, msg) ||
wps_build_assoc_state(wps, msg) ||
wps_build_config_error(msg, WPS_CFG_NO_ERROR) ||
wps_build_dev_password_id(msg, wps->dev_pw_id) ||
wps_build_os_version(&wps->wps->dev, msg) ||
wps_build_wfa_ext(msg, 0, NULL, 0) ||
wps_build_authenticator(wps, msg)) {
wpabuf_free(msg);
return NULL;
}
//wps->int_reg = 1;
wps->state = RECV_M3;
return msg;
}
static struct wpabuf * wps_build_m2d(struct wps_data *wps)
{
struct wpabuf *msg;
atbm_uint16 err = wps->config_error;
wpa_printf(MSG_ALWAYS, "WPS: Building Message M2D");
msg = wpabuf_alloc(1000);
if (msg == NULL)
return NULL;
if (wps->wps->ap && wps->wps->ap_setup_locked &&
err == WPS_CFG_NO_ERROR)
err = WPS_CFG_SETUP_LOCKED;
if (wps_build_version(msg) ||
wps_build_msg_type(msg, WPS_M2D) ||
wps_build_enrollee_nonce(wps, msg) ||
wps_build_registrar_nonce(wps, msg) ||
wps_build_uuid_r(wps, msg) ||
wps_build_auth_type_flags(wps, msg) ||
wps_build_encr_type_flags(wps, msg) ||
wps_build_conn_type_flags(wps, msg) ||
wps_build_config_methods_r(wps->wps->registrar, msg) ||
wps_build_device_attrs(&wps->wps->dev, msg) ||
wps_build_rf_bands(&wps->wps->dev, msg) ||
wps_build_assoc_state(wps, msg) ||
wps_build_config_error(msg, err) ||
wps_build_os_version(&wps->wps->dev, msg) ||
wps_build_wfa_ext(msg, 0, NULL, 0)) {
wpabuf_free(msg);
return NULL;
}
wps->state = RECV_M2D_ACK;
return msg;
}
static struct wpabuf * wps_build_m4(struct wps_data *wps)
{
struct wpabuf *msg, *plain;
wpa_printf(MSG_ALWAYS, "WPS: Building Message M4");
wps_derive_psk(wps, wps->dev_password, wps->dev_password_len);
plain = wpabuf_alloc(200);
if (plain == NULL)
return NULL;
msg = wpabuf_alloc(1000);
if (msg == NULL) {
wpabuf_free(plain);
return NULL;
}
if (wps_build_version(msg) ||
wps_build_msg_type(msg, WPS_M4) ||
wps_build_enrollee_nonce(wps, msg) ||
wps_build_r_hash(wps, msg) ||
wps_build_r_snonce1(wps, plain) ||
wps_build_key_wrap_auth(wps, plain) ||
wps_build_encr_settings(wps, msg, plain) ||
wps_build_wfa_ext(msg, 0, NULL, 0) ||
wps_build_authenticator(wps, msg)) {
wpa_printf(MSG_ALWAYS, "WPS: Building M4 ERROR");
wpabuf_free(plain);
wpabuf_free(msg);
return NULL;
}
wpabuf_free(plain);
wps->state = RECV_M5;
return msg;
}
static struct wpabuf * wps_build_m6(struct wps_data *wps)
{
struct wpabuf *msg, *plain;
wpa_printf(MSG_ALWAYS, "WPS: Building Message M6");
plain = wpabuf_alloc(200);
if (plain == NULL)
return NULL;
msg = wpabuf_alloc(1000);
if (msg == NULL) {
wpabuf_free(plain);
return NULL;
}
if (wps_build_version(msg) ||
wps_build_msg_type(msg, WPS_M6) ||
wps_build_enrollee_nonce(wps, msg) ||
wps_build_r_snonce2(wps, plain) ||
wps_build_key_wrap_auth(wps, plain) ||
wps_build_encr_settings(wps, msg, plain) ||
wps_build_wfa_ext(msg, 0, NULL, 0) ||
wps_build_authenticator(wps, msg)) {
wpabuf_free(plain);
wpabuf_free(msg);
return NULL;
}
wpabuf_free(plain);
wps->wps_pin_revealed = 1;
wps->state = RECV_M7;
return msg;
}
static struct wpabuf * wps_build_m8(struct wps_data *wps)
{
struct wpabuf *msg, *plain;
wpa_printf(MSG_ALWAYS, "WPS: Building Message M8");
plain = wpabuf_alloc(500);
if (plain == NULL)
return NULL;
msg = wpabuf_alloc(1000);
if (msg == NULL) {
wpabuf_free(plain);
return NULL;
}
if (wps_build_version(msg) ||
wps_build_msg_type(msg, WPS_M8) ||
wps_build_enrollee_nonce(wps, msg) ||
((wps->wps->ap || wps->er) && wps_build_cred(wps, plain)) ||
(!wps->wps->ap && !wps->er && wps_build_ap_settings(wps, plain)) ||
wps_build_key_wrap_auth(wps, plain) ||
wps_build_encr_settings(wps, msg, plain) ||
wps_build_wfa_ext(msg, 0, NULL, 0) ||
wps_build_authenticator(wps, msg)) {
wpabuf_free(plain);
wpabuf_free(msg);
return NULL;
}
wpabuf_free(plain);
// wps->state = RECV_DONE;
return msg;
}
struct wpabuf * wps_registrar_get_msg(struct wps_data *wps,
enum wsc_op_code *op_code)
{
struct wpabuf *msg;
switch (wps->state) {
case SEND_M2:
msg = wps_build_m2(wps);
*op_code = WSC_MSG;
break;
case SEND_M2D:
msg = wps_build_m2d(wps);
*op_code = WSC_MSG;
break;
case SEND_M4:
msg = wps_build_m4(wps);
*op_code = WSC_MSG;
break;
case SEND_M6:
msg = wps_build_m6(wps);
*op_code = WSC_MSG;
break;
case SEND_M8:
msg = wps_build_m8(wps);
*op_code = WSC_MSG;
break;
case RECV_DONE:
msg = wps_build_wsc_ack(wps);
*op_code = WSC_ACK;
break;
case SEND_WSC_NACK:
msg = wps_build_wsc_nack(wps);
*op_code = WSC_NACK;
break;
default:
wpa_printf(MSG_ERROR, "WPS: Unsupported state %d for building "
"a message", wps->state);
msg = NULL;
break;
}
if (*op_code == WSC_MSG && msg) {
/* Save a copy of the last message for Authenticator derivation
*/
wpabuf_free(wps->last_msg);
wps->last_msg = wpabuf_dup(msg);
}
return msg;
}
static int wps_process_enrollee_nonce(struct wps_data *wps, const atbm_uint8 *e_nonce)
{
if (e_nonce == NULL) {
wpa_printf(MSG_ERROR, "WPS: No Enrollee Nonce received");
return -1;
}
atbm_memcpy(wps->nonce_e, e_nonce, WPS_NONCE_LEN);
//wpa_printf(MSG_DEBUG, "WPS: Enrollee Nonce");
//wps->nonce_e, WPS_NONCE_LEN);
return 0;
}
static int wps_process_registrar_nonce(struct wps_data *wps, const atbm_uint8 *r_nonce)
{
if (r_nonce == NULL) {
wpa_printf(MSG_ERROR, "WPS: No Registrar Nonce received");
return -1;
}
if (atbm_memcmp(wps->nonce_r, r_nonce, WPS_NONCE_LEN) != 0) {
wpa_printf(MSG_DEBUG, "WPS: Invalid Registrar Nonce received");
return -1;
}
return 0;
}
static int wps_process_uuid_e(struct wps_data *wps, const atbm_uint8 *uuid_e)
{
if (uuid_e == NULL) {
wpa_printf(MSG_ERROR, "WPS: No UUID-E received");
return -1;
}
atbm_memcpy(wps->uuid_e, uuid_e, WPS_UUID_LEN);
wpa_printf(MSG_DEBUG, "WPS: uuid_e");
//wpa_hexdump(MSG_DEBUG, "WPS: UUID-E", wps->uuid_e, WPS_UUID_LEN);
return 0;
}
static int wps_process_dev_password_id(struct wps_data *wps, const atbm_uint8 *pw_id)
{
if (pw_id == NULL) {
wpa_printf(MSG_ERROR, "WPS: No Device Password ID received");
return -1;
}
wps->dev_pw_id = ATBM_WPA_GET_BE16(pw_id);
//wpa_printf(MSG_DEBUG, "WPS: Device Password ID %d", wps->dev_pw_id);
return 0;
}
static int wps_process_e_hash1(struct wps_data *wps, const atbm_uint8 *e_hash1)
{
if (e_hash1 == NULL) {
wpa_printf(MSG_ERROR, "WPS: No E-Hash1 received");
return -1;
}
atbm_memcpy(wps->peer_hash1, e_hash1, WPS_HASH_LEN);
wpa_hexdump(MSG_DEBUG, "WPS: E-Hash1", wps->peer_hash1, WPS_HASH_LEN);
return 0;
}
static int wps_process_e_hash2(struct wps_data *wps, const atbm_uint8 *e_hash2)
{
if (e_hash2 == NULL) {
wpa_printf(MSG_ERROR, "WPS: No E-Hash2 received");
return -1;
}
atbm_memcpy(wps->peer_hash2, e_hash2, WPS_HASH_LEN);
wpa_hexdump(MSG_DEBUG, "WPS: E-Hash2", wps->peer_hash2, WPS_HASH_LEN);
return 0;
}
static int wps_process_e_snonce1(struct wps_data *wps, const atbm_uint8 *e_snonce1)
{
atbm_uint8 hash[SHA256_MAC_LEN];
const atbm_uint8 *addr[4];
atbm_size_t len[4];
if (e_snonce1 == NULL) {
wpa_printf(MSG_ERROR, "WPS: No E-SNonce1 received");
return -1;
}
wpa_hexdump_key(MSG_DEBUG, "WPS: E-SNonce1", e_snonce1,
WPS_SECRET_NONCE_LEN);
/* E-Hash1 = HMAC_AuthKey(E-S1 || PSK1 || PK_E || PK_R) */
addr[0] = e_snonce1;
len[0] = WPS_SECRET_NONCE_LEN;
addr[1] = wps->psk1;
len[1] = WPS_PSK_LEN;
addr[2] = wpabuf_head(wps->dh_pubkey_e);
len[2] = wpabuf_len(wps->dh_pubkey_e);
addr[3] = wpabuf_head(wps->dh_pubkey_r);
len[3] = wpabuf_len(wps->dh_pubkey_r);
atbmwifi_hmac_sha256_vector(wps->authkey, WPS_AUTHKEY_LEN, 4, addr, len, hash);
if (atbm_memcmp(wps->peer_hash1, hash, WPS_HASH_LEN) != 0) {
wpa_printf(MSG_ERROR, "WPS: E-Hash1 derived from E-S1 does "
"not match with the pre-committed value");
wps->config_error = WPS_CFG_DEV_PASSWORD_AUTH_FAILURE;
//wps_pwd_auth_fail_event(wps->wps, 0, 1);
return -1;
}
wpa_printf(MSG_DEBUG, "WPS: Enrollee proved knowledge of the first "
"half of the device password");
return 0;
}
static int wps_process_e_snonce2(struct wps_data *wps, const atbm_uint8 *e_snonce2)
{
atbm_uint8 hash[SHA256_MAC_LEN];
const atbm_uint8 *addr[4];
atbm_size_t len[4];
if (e_snonce2 == NULL) {
wpa_printf(MSG_ERROR, "WPS: No E-SNonce2 received");
return -1;
}
wpa_hexdump_key(MSG_DEBUG, "WPS: E-SNonce2", e_snonce2,
WPS_SECRET_NONCE_LEN);
/* E-Hash2 = HMAC_AuthKey(E-S2 || PSK2 || PK_E || PK_R) */
addr[0] = e_snonce2;
len[0] = WPS_SECRET_NONCE_LEN;
addr[1] = wps->psk2;
len[1] = WPS_PSK_LEN;
addr[2] = wpabuf_head(wps->dh_pubkey_e);
len[2] = wpabuf_len(wps->dh_pubkey_e);
addr[3] = wpabuf_head(wps->dh_pubkey_r);
len[3] = wpabuf_len(wps->dh_pubkey_r);
atbmwifi_hmac_sha256_vector(wps->authkey, WPS_AUTHKEY_LEN, 4, addr, len, hash);
if (atbm_memcmp(wps->peer_hash2, hash, WPS_HASH_LEN) != 0) {
wpa_printf(MSG_ERROR, "WPS: E-Hash2 derived from E-S2 does "
"not match with the pre-committed value");
//wps_registrar_invalidate_pin(wps->wps->registrar, wps->uuid_e);
wps->config_error = WPS_CFG_DEV_PASSWORD_AUTH_FAILURE;
//wps_pwd_auth_fail_event(wps->wps, 0, 2);
return -1;
}
wpa_printf(MSG_DEBUG, "WPS: Enrollee proved knowledge of the second "
"half of the device password");
wps->wps_pin_revealed = 0;
//wps_registrar_unlock_pin(wps->wps->registrar, wps->uuid_e);
/*
* In case wildcard PIN is used and WPS handshake succeeds in the first
* attempt, wps_registrar_unlock_pin() would not free the PIN, so make
* sure the PIN gets invalidated here.
*/
//wps_registrar_invalidate_pin(wps->wps->registrar, wps->uuid_e);
return 0;
}
static int wps_process_mac_addr(struct wps_data *wps, const atbm_uint8 *mac_addr)
{
if (mac_addr == NULL) {
wpa_printf(MSG_ERROR, "WPS: No MAC Address received");
return -1;
}
//wpa_printf(MSG_DEBUG, "WPS: Enrollee MAC Address ");// MACSTR,
// MAC2STR(mac_addr));
atbm_memcpy(wps->mac_addr_e, mac_addr, ATBM_ETH_ALEN);
atbm_memcpy(wps->peer_dev.mac_addr, mac_addr, ATBM_ETH_ALEN);
return 0;
}
static int wps_process_pubkey(struct wps_data *wps, const atbm_uint8 *pk,
atbm_size_t pk_len)
{
if (pk == NULL || pk_len == 0) {
wpa_printf(MSG_ERROR, "WPS: No Public Key received");
return -1;
}
#ifdef CONFIG_WPS_OOB
if (wps->wps->oob_conf.pubkey_hash != NULL) {
const atbm_uint8 *addr[1];
atbm_uint8 hash[WPS_HASH_LEN];
addr[0] = pk;
atbmwifi_sha256_vector(1, addr, &pk_len, hash);
if (atbm_memcmp(hash,
wpabuf_head(wps->wps->oob_conf.pubkey_hash),
WPS_OOB_PUBKEY_HASH_LEN) != 0) {
wpa_printf(MSG_ERROR, "WPS: Public Key hash error");
return -1;
}
}
#endif /* CONFIG_WPS_OOB */
wpabuf_free(wps->dh_pubkey_e);
wps->dh_pubkey_e = wpabuf_alloc_copy(pk, pk_len);
if (wps->dh_pubkey_e == NULL)
return -1;
return 0;
}
static int wps_process_auth_type_flags(struct wps_data *wps, const atbm_uint8 *auth)
{
atbm_uint16 auth_types;
if (auth == NULL) {
wpa_printf(MSG_ERROR, "WPS: No Authentication Type flags "
"received");
return -1;
}
auth_types = ATBM_WPA_GET_BE16(auth);
//wpa_printf(MSG_DEBUG, "WPS: Enrollee Authentication Type flags 0x%x",
// auth_types);
wps->auth_type = wps->wps->auth_types & auth_types;
if (wps->auth_type == 0) {
wpa_printf(MSG_ERROR, "WPS: No match in supported "
"authentication types (own 0x%x Enrollee 0x%x)",
wps->wps->auth_types, auth_types);
#ifdef WPS_WORKAROUNDS
/*
* Some deployed implementations seem to advertise incorrect
* information in this attribute. For example, Linksys WRT350N
* seems to have a byteorder bug that breaks this negotiation.
* In order to interoperate with existing implementations,
* assume that the Enrollee supports everything we do.
*/
wpa_printf(MSG_ERROR, "WPS: Workaround - assume Enrollee "
"does not advertise supported authentication types "
"correctly");
wps->auth_type = wps->wps->auth_types;
#else /* WPS_WORKAROUNDS */
return -1;
#endif /* WPS_WORKAROUNDS */
}
return 0;
}
static int wps_process_encr_type_flags(struct wps_data *wps, const atbm_uint8 *encr)
{
atbm_uint16 encr_types;
if (encr == NULL) {
wpa_printf(MSG_ERROR, "WPS: No Encryption Type flags "
"received");
return -1;
}
encr_types = ATBM_WPA_GET_BE16(encr);
//wpa_printf(MSG_DEBUG, "WPS: Enrollee Encryption Type flags 0x%x",
// encr_types);
wps->encr_type = wps->wps->encr_types & encr_types;
if (wps->encr_type == 0) {
wpa_printf(MSG_ERROR, "WPS: No match in supported "
"encryption types (own 0x%x Enrollee 0x%x)",
wps->wps->encr_types, encr_types);
#ifdef WPS_WORKAROUNDS
/*
* Some deployed implementations seem to advertise incorrect
* information in this attribute. For example, Linksys WRT350N
* seems to have a byteorder bug that breaks this negotiation.
* In order to interoperate with existing implementations,
* assume that the Enrollee supports everything we do.
*/
wpa_printf(MSG_ERROR, "WPS: Workaround - assume Enrollee "
"does not advertise supported encryption types "
"correctly");
wps->encr_type = wps->wps->encr_types;
#else /* WPS_WORKAROUNDS */
return -1;
#endif /* WPS_WORKAROUNDS */
}
return 0;
}
static int wps_process_conn_type_flags(struct wps_data *wps, const atbm_uint8 *conn)
{
if (conn == NULL) {
wpa_printf(MSG_ERROR, "WPS: No Connection Type flags "
"received");
return -1;
}
//wpa_printf(MSG_DEBUG, "WPS: Enrollee Connection Type flags 0x%x",
// *conn);
return 0;
}
static int wps_process_config_methods(struct wps_data *wps, const atbm_uint8 *methods)
{
atbm_uint16 m;
if (methods == NULL) {
wpa_printf(MSG_ERROR, "WPS: No Config Methods received");
return -1;
}
m = ATBM_WPA_GET_BE16(methods);
/*wpa_printf(MSG_DEBUG, "WPS: Enrollee Config Methods 0x%x"
"%s%s%s%s%s%s%s%s%s", m,
m & WPS_CONFIG_USBA ? " [USBA]" : "",
m & WPS_CONFIG_ETHERNET ? " [Ethernet]" : "",
m & WPS_CONFIG_LABEL ? " [Label]" : "",
m & WPS_CONFIG_DISPLAY ? " [Display]" : "",
m & WPS_CONFIG_EXT_NFC_TOKEN ? " [Ext NFC Token]" : "",
m & WPS_CONFIG_INT_NFC_TOKEN ? " [Int NFC Token]" : "",
m & WPS_CONFIG_NFC_INTERFACE ? " [NFC]" : "",
m & WPS_CONFIG_PUSHBUTTON ? " [PBC]" : "",
m & WPS_CONFIG_KEYPAD ? " [Keypad]" : "");
*/
if (!(m & WPS_CONFIG_DISPLAY) && !wps->use_psk_key) {
/*
* The Enrollee does not have a display so it is unlikely to be
* able to show the passphrase to a user and as such, could
* benefit from receiving PSK to reduce key derivation time.
*/
wpa_printf(MSG_ERROR, "WPS: Prefer PSK format key due to "
"Enrollee not supporting display");
wps->use_psk_key = 1;
}
return 0;
}
static int wps_process_wps_state(struct wps_data *wps, const atbm_uint8 *state)
{
if (state == NULL) {
wpa_printf(MSG_ERROR, "WPS: No Wi-Fi Protected Setup State "
"received");
return -1;
}
//wpa_printf(MSG_DEBUG, "WPS: Enrollee Wi-Fi Protected Setup State %d",
// *state);
return 0;
}
static int wps_process_assoc_state(struct wps_data *wps, const atbm_uint8 *assoc)
{
//atbm_uint16 a;
if (assoc == NULL) {
wpa_printf(MSG_ERROR, "WPS: No Association State received");
return -1;
}
//a = ATBM_WPA_GET_BE16(assoc);
//wpa_printf(MSG_DEBUG, "WPS: Enrollee Association State %d", a);
return 0;
}
static int wps_process_config_error(struct wps_data *wps, const atbm_uint8 *err)
{
//atbm_uint16 e;
if (err == NULL) {
wpa_printf(MSG_ERROR, "WPS: No Configuration Error received");
return -1;
}
//e = WPA_GET_BE16(err);
//wpa_printf(MSG_DEBUG, "WPS: Enrollee Configuration Error %d", e);
return 0;
}
#if 0
static int wps_registrar_p2p_dev_addr_match(struct wps_data *wps)
{
#if CONFIG_P2P
struct wps_registrar *reg = wps->wps->registrar;
if (atbm_is_zero_ether_addr(reg->p2p_dev_addr))
return 1; /* no filtering in use */
if (atbm_memcmp(reg->p2p_dev_addr, wps->p2p_dev_addr, ATBM_ETH_ALEN) != 0) {
wpa_printf(MSG_ERROR, "WPS: No match on P2P Device Address "
"filtering for PBC: expected " MACSTR " was "
MACSTR " - indicate PBC session overlap",
MAC2STR(reg->p2p_dev_addr),
MAC2STR(wps->p2p_dev_addr));
return 0;
}
#endif /* CONFIG_P2P */
return 1;
}
#endif
static int wps_registrar_skip_overlap(struct wps_data *wps)
{
#if CONFIG_P2P
struct wps_registrar *reg = wps->wps->registrar;
if (atbm_is_zero_ether_addr(reg->p2p_dev_addr))
return 0; /* no specific Enrollee selected */
if (atbm_memcmp(reg->p2p_dev_addr, wps->p2p_dev_addr, ATBM_ETH_ALEN) == 0) {
wpa_printf(MSG_ERROR, "WPS: Skip PBC overlap due to selected "
"Enrollee match");
return 1;
}
#endif /* CONFIG_P2P */
return 0;
}
static enum wps_process_res wps_process_m1(struct wps_data *wps,
struct wps_parse_attr *attr)
{
wpa_printf(MSG_ALWAYS, "WPS: Received M1");
if (wps->state != RECV_M1) {
wpa_printf(MSG_ERROR, "WPS: Unexpected state (%d) for "
"receiving M1\n", wps->state);
return WPS_FAILURE;
}
if (wps_process_uuid_e(wps, attr->uuid_e) ||
wps_process_mac_addr(wps, attr->mac_addr) ||
wps_process_enrollee_nonce(wps, attr->enrollee_nonce) ||
wps_process_pubkey(wps, attr->public_key, attr->public_key_len) ||
wps_process_auth_type_flags(wps, attr->auth_type_flags) ||
wps_process_encr_type_flags(wps, attr->encr_type_flags) ||
wps_process_conn_type_flags(wps, attr->conn_type_flags) ||
wps_process_config_methods(wps, attr->config_methods) ||
wps_process_wps_state(wps, attr->wps_state) ||
wps_process_device_attrs(&wps->peer_dev, attr) ||
wps_process_rf_bands(&wps->peer_dev, attr->rf_bands) ||
wps_process_assoc_state(wps, attr->assoc_state) ||
wps_process_dev_password_id(wps, attr->dev_password_id) ||
wps_process_config_error(wps, attr->config_error) ||
wps_process_os_version(&wps->peer_dev, attr->os_version))
return WPS_FAILURE;
if (wps->dev_pw_id < 0x10 &&
wps->dev_pw_id != DEV_PW_DEFAULT &&
wps->dev_pw_id != DEV_PW_USER_SPECIFIED &&
wps->dev_pw_id != DEV_PW_MACHINE_SPECIFIED &&
wps->dev_pw_id != DEV_PW_REGISTRAR_SPECIFIED &&
(wps->dev_pw_id != DEV_PW_PUSHBUTTON ||
!wps->wps->registrar->pbc)) {
wpa_printf(MSG_ERROR, "WPS: Unsupported Device Password ID %d",
wps->dev_pw_id);
wps->state = SEND_M2D;
return WPS_CONTINUE;
}
/*if (wps->dev_pw_id == DEV_PW_PUSHBUTTON) {
if ((wps->wps->registrar->force_pbc_overlap ||
wps_registrar_pbc_overlap(wps->wps->registrar,
wps->mac_addr_e, wps->uuid_e) ||
!wps_registrar_p2p_dev_addr_match(wps)) &&
!wps_registrar_skip_overlap(wps)) {
wpa_printf(MSG_DEBUG, "WPS: PBC overlap - deny PBC "
"negotiation");
wps->state = SEND_M2D;
wps->config_error = WPS_CFG_MULTIPLE_PBC_DETECTED;
wps_pbc_overlap_event(wps->wps);
wps_fail_event(wps->wps, WPS_M1,
WPS_CFG_MULTIPLE_PBC_DETECTED,
WPS_EI_NO_ERROR);
wps->wps->registrar->force_pbc_overlap = 1;
return WPS_CONTINUE;
}
wpa_printf(MSG_DEBUG, "WPS: add_pbc_session\n");
wps_registrar_add_pbc_session(wps->wps->registrar,
wps->mac_addr_e, wps->uuid_e);
wps->pbc = 1;
}*/
#if 0//def WPS_WORKAROUNDS
/*
* It looks like Mac OS X 10.6.3 and 10.6.4 do not like Network Key in
* passphrase format. To avoid interop issues, force PSK format to be
* used.
*/
if (!wps->use_psk_key &&
wps->peer_dev.manufacturer &&
strncmp(wps->peer_dev.manufacturer, "Apple ", 6) == 0 &&
wps->peer_dev.model_name &&
strcmp(wps->peer_dev.model_name, "AirPort") == 0) {
wpa_printf(MSG_DEBUG, "WPS: Workaround - Force Network Key in "
"PSK format");
wps->use_psk_key = 1;
}
#endif /* WPS_WORKAROUNDS */
wpa_printf(MSG_DEBUG, "WPS: SEND_M2");
wps->state = SEND_M2;
return WPS_CONTINUE;
}
static enum wps_process_res wps_process_m3(struct wps_data *wps,
const struct wpabuf *msg,
struct wps_parse_attr *attr)
{
wpa_printf(MSG_ALWAYS, "WPS: Received M3");
if (wps->state != RECV_M3) {
wpa_printf(MSG_ERROR, "WPS: Unexpected state (%d) for "
"receiving M3", wps->state);
wps->state = SEND_WSC_NACK;
return WPS_CONTINUE;
}
if (wps->pbc && wps->wps->registrar->force_pbc_overlap &&
!wps_registrar_skip_overlap(wps)) {
wpa_printf(MSG_ERROR, "WPS: Reject negotiation due to PBC "
"session overlap");
wps->state = SEND_WSC_NACK;
wps->config_error = WPS_CFG_MULTIPLE_PBC_DETECTED;
return WPS_CONTINUE;
}
if (wps_process_registrar_nonce(wps, attr->registrar_nonce) ||
wps_process_authenticator(wps, attr->authenticator, msg) ||
wps_process_e_hash1(wps, attr->e_hash1) ||
wps_process_e_hash2(wps, attr->e_hash2)) {
wps->state = SEND_WSC_NACK;
return WPS_CONTINUE;
}
wps->state = SEND_M4;
return WPS_CONTINUE;
}
static enum wps_process_res wps_process_m5(struct wps_data *wps,
const struct wpabuf *msg,
struct wps_parse_attr *attr)
{
struct wpabuf *decrypted;
struct wps_parse_attr *eattr;
wpa_printf(MSG_ALWAYS, "WPS: Received M5");
if (wps->state != RECV_M5) {
wpa_printf(MSG_ERROR, "WPS: Unexpected state (%d) for "
"receiving M5", wps->state);
wps->state = SEND_WSC_NACK;
return WPS_CONTINUE;
}
if (wps->pbc && wps->wps->registrar->force_pbc_overlap &&
!wps_registrar_skip_overlap(wps)) {
wpa_printf(MSG_ERROR, "WPS: Reject negotiation due to PBC "
"session overlap");
wps->state = SEND_WSC_NACK;
wps->config_error = WPS_CFG_MULTIPLE_PBC_DETECTED;
return WPS_CONTINUE;
}
if (wps_process_registrar_nonce(wps, attr->registrar_nonce) ||
wps_process_authenticator(wps, attr->authenticator, msg)) {
wps->state = SEND_WSC_NACK;
return WPS_CONTINUE;
}
decrypted = wps_decrypt_encr_settings(wps, attr->encr_settings,
attr->encr_settings_len);
if (decrypted == NULL) {
wpa_printf(MSG_ERROR, "WPS: Failed to decrypted Encrypted "
"Settings attribute");
wps->state = SEND_WSC_NACK;
return WPS_CONTINUE;
}
if (wps_validate_m5_encr(decrypted, attr->version2 != NULL) < 0) {
wpabuf_free(decrypted);
wps->state = SEND_WSC_NACK;
return WPS_CONTINUE;
}
wpa_printf(MSG_DEBUG, "WPS: Processing decrypted Encrypted Settings "
"attribute");
eattr = atbm_kmalloc(sizeof(*eattr), GFP_KERNEL);
if (eattr == NULL)
{
wpa_printf(MSG_ERROR, "WPS: msg M5 malloc failed");
wps->state = SEND_WSC_NACK;
return WPS_FAILURE;
}
if (wps_parse_msg(decrypted, eattr) < 0 ||
wps_process_key_wrap_auth(wps, decrypted, eattr->key_wrap_auth) ||
wps_process_e_snonce1(wps, eattr->e_snonce1)) {
wpabuf_free(decrypted);
wps->state = SEND_WSC_NACK;
atbm_kfree(eattr);
return WPS_CONTINUE;
}
wpabuf_free(decrypted);
atbm_kfree(eattr);
wps->state = SEND_M6;
return WPS_CONTINUE;
}
static atbm_void wps_sta_cred_cb(struct wps_data *wps)
{
/*
* Update credential to only include a single authentication and
* encryption type in case the AP configuration includes more than one
* option.
*/
if (wps->cred.auth_type & WPS_AUTH_WPA2PSK)
wps->cred.auth_type = WPS_AUTH_WPA2PSK;
else if (wps->cred.auth_type & WPS_AUTH_WPAPSK)
wps->cred.auth_type = WPS_AUTH_WPAPSK;
if (wps->cred.encr_type & WPS_ENCR_AES)
wps->cred.encr_type = WPS_ENCR_AES;
else if (wps->cred.encr_type & WPS_ENCR_TKIP)
wps->cred.encr_type = WPS_ENCR_TKIP;
wpa_printf(MSG_DEBUG, "WPS: Update local configuration based on the "
"AP configuration");
if (wps->wps->cred_cb)
wps->wps->cred_cb(wps->wps->cb_ctx, &wps->cred);
}
static atbm_void wps_cred_update(struct wps_credential *dst,
struct wps_credential *src)
{
atbm_memcpy(dst->ssid, src->ssid, sizeof(dst->ssid));
dst->ssid_len = src->ssid_len;
dst->auth_type = src->auth_type;
dst->encr_type = src->encr_type;
dst->key_idx = src->key_idx;
atbm_memcpy(dst->key, src->key, sizeof(dst->key));
dst->key_len = src->key_len;
}
static int wps_process_ap_settings_r(struct wps_data *wps,
struct wps_parse_attr *attr)
{
struct wpabuf *msg;
if (wps->wps->ap || wps->er)
return 0;
/* AP Settings Attributes in M7 when Enrollee is an AP */
if (wps_process_ap_settings(attr, &wps->cred) < 0)
return -1;
wpa_printf(MSG_INFO, "WPS: Received old AP configuration from AP");
if (wps->new_ap_settings) {
wpa_printf(MSG_INFO, "WPS: Update AP configuration based on "
"new settings");
wps_cred_update(&wps->cred, wps->new_ap_settings);
return 0;
} else {
/*
* Use the AP PIN only to receive the current AP settings, not
* to reconfigure the AP.
*/
/*
* Clear selected registrar here since we do not get to
* WSC_Done in this protocol run.
*/
wps_registrar_pin_completed(wps->wps->registrar);
msg = wps_build_ap_cred(wps);
if (msg == NULL)
return -1;
wps->cred.cred_attr = wpabuf_head(msg);
wps->cred.cred_attr_len = wpabuf_len(msg);
if (wps->ap_settings_cb) {
wps->ap_settings_cb(wps->ap_settings_cb_ctx,
&wps->cred);
wpabuf_free(msg);
return 1;
}
wps_sta_cred_cb(wps);
wps->cred.cred_attr = NULL;
wps->cred.cred_attr_len = 0;
wpabuf_free(msg);
return 1;
}
}
static enum wps_process_res wps_process_m7(struct wps_data *wps,
const struct wpabuf *msg,
struct wps_parse_attr *attr)
{
struct wpabuf *decrypted;
struct wps_parse_attr *eattr;
wpa_printf(MSG_ALWAYS, "WPS: Received M7");
if (wps->state != RECV_M7) {
wpa_printf(MSG_ERROR, "WPS: Unexpected state (%d) for "
"receiving M7", wps->state);
wps->state = SEND_WSC_NACK;
return WPS_CONTINUE;
}
if (wps->pbc && wps->wps->registrar->force_pbc_overlap &&
!wps_registrar_skip_overlap(wps)) {
wpa_printf(MSG_ERROR, "WPS: Reject negotiation due to PBC "
"session overlap");
wps->state = SEND_WSC_NACK;
wps->config_error = WPS_CFG_MULTIPLE_PBC_DETECTED;
return WPS_CONTINUE;
}
if (wps_process_registrar_nonce(wps, attr->registrar_nonce) ||
wps_process_authenticator(wps, attr->authenticator, msg)) {
wps->state = SEND_WSC_NACK;
return WPS_CONTINUE;
}
decrypted = wps_decrypt_encr_settings(wps, attr->encr_settings,
attr->encr_settings_len);
if (decrypted == NULL) {
wpa_printf(MSG_ERROR, "WPS: Failed to decrypt Encrypted "
"Settings attribute");
wps->state = SEND_WSC_NACK;
return WPS_CONTINUE;
}
if (wps_validate_m7_encr(decrypted, wps->wps->ap || wps->er,
attr->version2 != NULL) < 0) {
wpabuf_free(decrypted);
wps->state = SEND_WSC_NACK;
return WPS_CONTINUE;
}
wpa_printf(MSG_DEBUG, "WPS: Processing decrypted Encrypted Settings "
"attribute");
eattr = atbm_kmalloc(sizeof(*eattr), GFP_KERNEL);
if (eattr == NULL)
{
wpa_printf(MSG_ERROR, "WPS: msg M7 malloc failed");
wps->state = SEND_WSC_NACK;
return WPS_FAILURE;
}
if (wps_parse_msg(decrypted, eattr) < 0 ||
wps_process_key_wrap_auth(wps, decrypted, eattr->key_wrap_auth) ||
wps_process_e_snonce2(wps, eattr->e_snonce2) ||
wps_process_ap_settings_r(wps, eattr)) {
wpabuf_free(decrypted);
wps->state = SEND_WSC_NACK;
atbm_kfree(eattr);
return WPS_CONTINUE;
}
wpabuf_free(decrypted);
atbm_kfree(eattr);
wps->state = SEND_M8;
return WPS_CONTINUE;
}
inline static enum wps_process_res wps_process_wsc_msg(struct wps_data *wps,
const struct wpabuf *msg)
{
struct wps_parse_attr *attr;
enum wps_process_res ret = WPS_CONTINUE;
wpa_printf(MSG_ALWAYS, "WPS: Received WSC_MSG");
attr = atbm_kmalloc(sizeof(*attr), GFP_KERNEL);
if (attr == NULL)
{
wpa_printf(MSG_ERROR, "WPS: msg malloc failed");
return WPS_FAILURE;
}
atbm_memset(attr, 0, sizeof(*attr));
if (wps_parse_msg(msg, attr) < 0)
{
atbm_kfree(attr);
return WPS_FAILURE;
}
if (attr->msg_type == NULL) {
wpa_printf(MSG_ERROR, "WPS: No Message Type attribute");
wps->state = SEND_WSC_NACK;
atbm_kfree(attr);
return WPS_CONTINUE;
}
if (*attr->msg_type != WPS_M1 &&
(attr->registrar_nonce == NULL ||
atbm_memcmp(wps->nonce_r, attr->registrar_nonce,
WPS_NONCE_LEN) != 0)) {
wpa_printf(MSG_ERROR, "WPS: Mismatch in registrar nonce");
atbm_kfree(attr);
return WPS_FAILURE;
}
switch (*attr->msg_type) {
case WPS_M1:
if (wps_validate_m1(msg) < 0)
{
atbm_kfree(attr);
return WPS_FAILURE;
}
ret = wps_process_m1(wps, attr);
break;
case WPS_M3:
if (wps_validate_m3(msg) < 0)
{
atbm_kfree(attr);
return WPS_FAILURE;
}
ret = wps_process_m3(wps, msg, attr);
if (ret == WPS_FAILURE || wps->state == SEND_WSC_NACK)
wps_fail_event(wps->wps, WPS_M3, wps->config_error,
wps->error_indication);
break;
case WPS_M5:
if (wps_validate_m5(msg) < 0)
{
atbm_kfree(attr);
return WPS_FAILURE;
}
ret = wps_process_m5(wps, msg, attr);
if (ret == WPS_FAILURE || wps->state == SEND_WSC_NACK)
wps_fail_event(wps->wps, WPS_M5, wps->config_error,
wps->error_indication);
break;
case WPS_M7:
if (wps_validate_m7(msg) < 0)
{
atbm_kfree(attr);
return WPS_FAILURE;
}
ret = wps_process_m7(wps, msg, attr);
if (ret == WPS_FAILURE || wps->state == SEND_WSC_NACK)
wps_fail_event(wps->wps, WPS_M7, wps->config_error,
wps->error_indication);
break;
default:
wpa_printf(MSG_ERROR, "WPS: Unsupported Message Type %d",
*attr->msg_type);
atbm_kfree(attr);
return WPS_FAILURE;
}
if (ret == WPS_CONTINUE) {
/* Save a copy of the last message for Authenticator derivation
*/
wpabuf_free(wps->last_msg);
wps->last_msg = wpabuf_dup(msg);
}
atbm_kfree(attr);
return ret;
}
static enum wps_process_res wps_process_wsc_ack(struct wps_data *wps,
const struct wpabuf *msg)
{
struct wps_parse_attr *attr;
wpa_printf(MSG_ALWAYS, "WPS: Received WSC_ACK");
attr = atbm_kmalloc(sizeof(*attr), GFP_KERNEL);
if (attr == NULL)
{
wpa_printf(MSG_ERROR, "WPS: msg wsc_done malloc failed");
return WPS_FAILURE;
}
if (wps_parse_msg(msg, attr) < 0)
{
atbm_kfree(attr);
return WPS_FAILURE;
}
if (attr->msg_type == NULL) {
wpa_printf(MSG_ERROR, "WPS: No Message Type attribute");
atbm_kfree(attr);
return WPS_FAILURE;
}
if (*attr->msg_type != WPS_WSC_ACK) {
wpa_printf(MSG_ERROR, "WPS: Invalid Message Type %d",
*attr->msg_type);
atbm_kfree(attr);
return WPS_FAILURE;
}
#if CONFIG_WPS_UPNP
if (wps->wps->wps_upnp && wps->ext_reg && wps->state == RECV_M2D_ACK &&
upnp_wps_subscribers(wps->wps->wps_upnp)) {
if (wps->wps->upnp_msgs)
return WPS_CONTINUE;
wpa_printf(MSG_ERROR, "WPS: Wait for response from an "
"external Registrar");
atbm_kfree(attr);
return WPS_PENDING;
}
#endif /* CONFIG_WPS_UPNP */
if (attr->registrar_nonce == NULL ||
atbm_memcmp(wps->nonce_r, attr->registrar_nonce, WPS_NONCE_LEN) != 0)
{
wpa_printf(MSG_ERROR, "WPS: Mismatch in registrar nonce");
atbm_kfree(attr);
return WPS_FAILURE;
}
if (attr->enrollee_nonce == NULL ||
atbm_memcmp(wps->nonce_e, attr->enrollee_nonce, WPS_NONCE_LEN) != 0) {
wpa_printf(MSG_ERROR, "WPS: Mismatch in enrollee nonce");
atbm_kfree(attr);
return WPS_FAILURE;
}
if (wps->state == RECV_M2D_ACK) {
#if CONFIG_WPS_UPNP
if (wps->wps->wps_upnp &&
upnp_wps_subscribers(wps->wps->wps_upnp)) {
if (wps->wps->upnp_msgs)
return WPS_CONTINUE;
if (wps->ext_reg == 0)
wps->ext_reg = 1;
wpa_printf(MSG_ERROR, "WPS: Wait for response from an "
"external Registrar");
atbm_kfree(attr);
return WPS_PENDING;
}
#endif /* CONFIG_WPS_UPNP */
wpa_printf(MSG_ERROR, "WPS: No more registrars available - "
"terminate negotiation");
}
atbm_kfree(attr);
return WPS_FAILURE;
}
static enum wps_process_res wps_process_wsc_nack(struct wps_data *wps,
const struct wpabuf *msg)
{
struct wps_parse_attr *attr;
int old_state;
atbm_uint16 config_error;
wpa_printf(MSG_DEBUG, "WPS: Received WSC_NACK");
attr = atbm_kmalloc(sizeof(*attr), GFP_KERNEL);
if (attr == NULL)
{
wpa_printf(MSG_DEBUG, "WPS: msg wsc_done malloc failed");
return WPS_FAILURE;
}
old_state = wps->state;
wps->state = SEND_WSC_NACK;
if (wps_parse_msg(msg, attr) < 0)
{
atbm_kfree(attr);
return WPS_FAILURE;
}
if (attr->msg_type == NULL) {
wpa_printf(MSG_DEBUG, "WPS: No Message Type attribute");
atbm_kfree(attr);
return WPS_FAILURE;
}
if (*attr->msg_type != WPS_WSC_NACK) {
wpa_printf(MSG_DEBUG, "WPS: Invalid Message Type %d",
*attr->msg_type);
atbm_kfree(attr);
return WPS_FAILURE;
}
#if CONFIG_WPS_UPNP
if (wps->wps->wps_upnp && wps->ext_reg) {
wpa_printf(MSG_DEBUG, "WPS: Negotiation using external "
"Registrar terminated by the Enrollee");
atbm_kfree(attr);
return WPS_FAILURE;
}
#endif /* CONFIG_WPS_UPNP */
if (attr->registrar_nonce == NULL ||
atbm_memcmp(wps->nonce_r, attr->registrar_nonce, WPS_NONCE_LEN) != 0)
{
wpa_printf(MSG_DEBUG, "WPS: Mismatch in registrar nonce");
atbm_kfree(attr);
return WPS_FAILURE;
}
if (attr->enrollee_nonce == NULL ||
atbm_memcmp(wps->nonce_e, attr->enrollee_nonce, WPS_NONCE_LEN) != 0) {
wpa_printf(MSG_DEBUG, "WPS: Mismatch in enrollee nonce");
atbm_kfree(attr);
return WPS_FAILURE;
}
if (attr->config_error == NULL) {
wpa_printf(MSG_DEBUG, "WPS: No Configuration Error attribute "
"in WSC_NACK");
atbm_kfree(attr);
return WPS_FAILURE;
}
config_error = ATBM_WPA_GET_BE16(attr->config_error);
wpa_printf(MSG_DEBUG, "WPS: Enrollee terminated negotiation with "
"Configuration Error %d", config_error);
switch (old_state) {
case RECV_M3:
//wps_fail_event(wps->wps, WPS_M2, config_error,
// wps->error_indication);
break;
case RECV_M5:
//wps_fail_event(wps->wps, WPS_M4, config_error,
// wps->error_indication);
break;
case RECV_M7:
//wps_fail_event(wps->wps, WPS_M6, config_error,
// wps->error_indication);
break;
case RECV_DONE:
//wps_fail_event(wps->wps, WPS_M8, config_error,
// wps->error_indication);
break;
default:
break;
}
atbm_kfree(attr);
return WPS_FAILURE;
}
static enum wps_process_res wps_process_wsc_done(struct wps_data *wps,
const struct wpabuf *msg)
{
struct wps_parse_attr *attr;
wpa_printf(MSG_ALWAYS, "WPS: Received WSC_Done");
attr = atbm_kmalloc(sizeof(*attr), GFP_KERNEL);
if (attr == NULL)
{
wpa_printf(MSG_ERROR, "WPS: msg wsc_done malloc failed");
return WPS_FAILURE;
}
if (wps->state != SEND_M8
#if CONFIG_WPS_UPNP
&& (!wps->wps->wps_upnp || !wps->ext_reg)
#endif
) {
wpa_printf(MSG_ERROR, "WPS: Unexpected state (%d) for "
"receiving WSC_Done", wps->state);
atbm_kfree(attr);
return WPS_FAILURE;
}
if (wps_parse_msg(msg, attr) < 0)
{
atbm_kfree(attr);
return WPS_FAILURE;
}
if (attr->msg_type == NULL) {
wpa_printf(MSG_ERROR, "WPS: No Message Type attribute");
atbm_kfree(attr);
return WPS_FAILURE;
}
if (*attr->msg_type != WPS_WSC_DONE) {
wpa_printf(MSG_ERROR, "WPS: Invalid Message Type %d",
*attr->msg_type);
atbm_kfree(attr);
return WPS_FAILURE;
}
if (attr->registrar_nonce == NULL ||
atbm_memcmp(wps->nonce_r, attr->registrar_nonce, WPS_NONCE_LEN) != 0)
{
wpa_printf(MSG_ERROR, "WPS: Mismatch in registrar nonce");
atbm_kfree(attr);
return WPS_FAILURE;
}
if (attr->enrollee_nonce == NULL ||
atbm_memcmp(wps->nonce_e, attr->enrollee_nonce, WPS_NONCE_LEN) != 0) {
wpa_printf(MSG_ERROR, "WPS: Mismatch in enrollee nonce");
atbm_kfree(attr);
return WPS_FAILURE;
}
wpa_printf(MSG_DEBUG, "WPS: Negotiation completed successfully");
//wps_device_store(wps->wps->registrar, &wps->peer_dev,
// wps->uuid_e);
if (wps->wps->wps_state == WPS_STATE_NOT_CONFIGURED && wps->new_psk &&
wps->wps->ap && !wps->wps->registrar->disable_auto_conf) {
struct wps_credential cred;
wpa_printf(MSG_ERROR, "WPS: Moving to Configured state based "
"on first Enrollee connection");
atbm_memset(&cred, 0, sizeof(cred));
atbm_memcpy(cred.ssid, wps->wps->ssid, wps->wps->ssid_len);
cred.ssid_len = wps->wps->ssid_len;
cred.auth_type = WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK;
cred.encr_type = WPS_ENCR_TKIP | WPS_ENCR_AES;
atbm_memcpy(cred.key, wps->new_psk, wps->new_psk_len);
cred.key_len = wps->new_psk_len;
wps->wps->wps_state = WPS_STATE_CONFIGURED;
wpa_hexdump_ascii_key(MSG_DEBUG,
"WPS: Generated random passphrase",
wps->new_psk, wps->new_psk_len);
if (wps->wps->cred_cb)
wps->wps->cred_cb(wps->wps->cb_ctx, &cred);
atbm_kfree(wps->new_psk);
wps->new_psk = NULL;
}
if (!wps->wps->ap && !wps->er)
wps_sta_cred_cb(wps);
if (wps->new_psk) {
//if (wps_cb_new_psk(wps->wps->registrar, wps->mac_addr_e,
// wps->new_psk, wps->new_psk_len)) {
// wpa_printf(MSG_DEBUG, "WPS: Failed to configure the "
// "new PSK");
//}
atbm_kfree(wps->new_psk);
wps->new_psk = NULL;
}
wps->wps->wpa_success_deauth = 1;
wps_cb_reg_success(wps->wps->registrar, wps->mac_addr_e, wps->uuid_e,
wps->dev_password, wps->dev_password_len);
if (wps->pbc) {
wps_registrar_pbc_completed(wps->wps->registrar);
} else {
wps_registrar_pin_completed(wps->wps->registrar);
}
/* TODO: maintain AuthorizedMACs somewhere separately for each ER and
* merge them into APs own list.. */
wps->state = RECV_DONE;
//wps_success_event(wps->wps);
atbm_kfree(attr);
return WPS_DONE;
}
enum wps_process_res wps_registrar_process_msg(struct wps_data *wps,
enum wsc_op_code op_code,
const struct wpabuf *msg)
{
enum wps_process_res ret;
//wpa_printf(MSG_DEBUG, "WPS: Processing received message (len=%lu "
// "op_code=%d)\n",
// (unsigned long) wpabuf_len(msg), op_code);
switch (op_code) {
case WSC_MSG:
return wps_process_wsc_msg(wps, msg);
case WSC_ACK:
if (wps_validate_wsc_ack(msg) < 0)
return WPS_FAILURE;
return wps_process_wsc_ack(wps, msg);
case WSC_NACK:
if (wps_validate_wsc_nack(msg) < 0)
return WPS_FAILURE;
return wps_process_wsc_nack(wps, msg);
case WSC_Done:
if (wps_validate_wsc_done(msg) < 0)
return WPS_FAILURE;
ret = wps_process_wsc_done(wps, msg);
if (ret == WPS_FAILURE) {
wps->state = SEND_WSC_NACK;
wps_fail_event(wps->wps, WPS_WSC_DONE,
wps->config_error,
wps->error_indication);
}
return ret;
default:
wpa_printf(MSG_DEBUG, "WPS: Unsupported op_code %d", op_code);
return WPS_FAILURE;
}
}
int wps_registrar_update_ie(struct wps_registrar *reg)
{
return wps_set_ie(reg);
}
static atbm_void wps_registrar_set_selected_timeout(void *eloop_ctx,
atbm_void *timeout_ctx)
{
struct wps_registrar *reg = eloop_ctx;
wpa_printf(MSG_DEBUG, "WPS: Selected Registrar timeout - "
"unselect internal Registrar");
reg->selected_registrar = 0;
reg->pbc = 0;
wps_registrar_selected_registrar_changed(reg, 0);
}
static atbm_void wps_registrar_sel_reg_union(struct wps_registrar *reg)
{
}
/**
* wps_registrar_selected_registrar_changed - SetSelectedRegistrar change
* @reg: Registrar data from wps_registrar_init()
*
* This function is called when selected registrar state changes, e.g., when an
* AP receives a SetSelectedRegistrar UPnP message.
*/
atbm_void wps_registrar_selected_registrar_changed(struct wps_registrar *reg, atbm_uint16 dev_pw_id)
{
wpa_printf(MSG_ALWAYS, "WPS: Selected registrar information changed");
reg->sel_reg_union = reg->selected_registrar;
reg->sel_reg_dev_password_id_override = -1;
reg->sel_reg_config_methods_override = -1;
//atbm_memcpy(reg->authorized_macs_union, reg->authorized_macs,
// WPS_MAX_AUTHORIZED_MACS * ATBM_ETH_ALEN);
if (reg->selected_registrar) {
atbm_uint16 methods;
methods = reg->wps->config_methods & ~WPS_CONFIG_PUSHBUTTON;
#if CONFIG_WPS2
methods &= ~(WPS_CONFIG_VIRT_PUSHBUTTON |
WPS_CONFIG_PHY_PUSHBUTTON);
#endif /* CONFIG_WPS2 */
if (reg->pbc) {
reg->sel_reg_dev_password_id_override =
DEV_PW_PUSHBUTTON;
wps_set_pushbutton(&methods, reg->wps->config_methods);
}
wpa_printf(MSG_ALWAYS, "WPS: Internal Registrar selected "
"(pbc=%d)", reg->pbc);
reg->sel_reg_config_methods_override = methods;
}
else {
wpa_printf(MSG_DEBUG, "WPS: Internal Registrar not selected");
}
wps_registrar_sel_reg_union(reg);
wpa_printf(MSG_DEBUG, "WPS: wps_set_ie\n");
wps_set_ie(reg);
wps_cb_set_sel_reg(reg);
}
#if 0
int wps_registrar_get_info(struct wps_registrar *reg, const atbm_uint8 *addr,
char *buf, atbm_size_t buflen)
{
struct wps_registrar_device *d;
int len = 0, ret;
char uuid[40];
char devtype[WPS_DEV_TYPE_BUFSIZE];
d = wps_device_get(reg, addr);
if (d == NULL)
return 0;
if (uuid_bin2str(d->uuid, uuid, sizeof(uuid)))
return 0;
ret = sprintf(buf + len,
"wpsUuid=%s\n"
"wpsPrimaryDeviceType=%s\n"
"wpsDeviceName=%s\n"
"wpsManufacturer=%s\n"
"wpsModelName=%s\n"
"wpsModelNumber=%s\n"
"wpsSerialNumber=%s\n",
uuid,
wps_dev_type_bin2str(d->dev.pri_dev_type, devtype,
sizeof(devtype)),
d->dev.device_name ? d->dev.device_name : "",
d->dev.manufacturer ? d->dev.manufacturer : "",
d->dev.model_name ? d->dev.model_name : "",
d->dev.model_number ? d->dev.model_number : "",
d->dev.serial_number ? d->dev.serial_number : "");
if (ret < 0 || (atbm_size_t) ret >= buflen - len)
return len;
len += ret;
return len;
}
#endif
int wps_registrar_config_ap(struct wps_registrar *reg,
struct wps_credential *cred)
{
#if CONFIG_WPS2
wpa_printf(MSG_ALWAYS, "encr_type=0x%x\n", cred->encr_type);
if (!(cred->encr_type & (WPS_ENCR_NONE | WPS_ENCR_TKIP |
WPS_ENCR_AES))) {
if (cred->encr_type & WPS_ENCR_WEP) {
wpa_printf(MSG_INFO, "WPS: Reject new AP settings "
"due to WEP configuration");
return -1;
}
wpa_printf(MSG_INFO, "WPS: Reject new AP settings due to "
"invalid encr_type 0x%x", cred->encr_type);
return -1;
}
if ((cred->encr_type & (WPS_ENCR_TKIP | WPS_ENCR_AES)) ==
WPS_ENCR_TKIP) {
wpa_printf(MSG_DEBUG, "WPS: Upgrade encr_type TKIP -> "
"TKIP+AES");
cred->encr_type |= WPS_ENCR_AES;
}
if ((cred->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) ==
WPS_AUTH_WPAPSK) {
wpa_printf(MSG_DEBUG, "WPS: Upgrade auth_type WPAPSK -> "
"WPAPSK+WPA2PSK");
cred->auth_type |= WPS_AUTH_WPA2PSK;
}
#endif /* CONFIG_WPS2 */
if (reg->wps->cred_cb)
return reg->wps->cred_cb(reg->wps->cb_ctx, cred);
return -1;
}
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