hostap/tests/test-eapol.c
Jouni Malinen d3516cad7a Store a copy of Association Request RSNXE in AP mode for later use
This is needed to be able to compare the received RSNXE to a protected
version in EAPOL-Key msg 2/4.

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
2019-10-18 00:20:29 +03:00

608 lines
14 KiB
C

/*
* Testing tool for EAPOL-Key Supplicant/Authenticator routines
* Copyright (c) 2006-2019, Jouni Malinen <j@w1.fi>
*
* This software may be distributed under the terms of the BSD license.
* See README for more details.
*/
#include "utils/includes.h"
#include "utils/common.h"
#include "utils/eloop.h"
#include "rsn_supp/wpa.h"
#include "ap/wpa_auth.h"
struct wpa {
enum { AUTH, SUPP } test_peer;
enum { READ, WRITE } test_oper;
FILE *f;
int wpa1;
u8 auth_addr[ETH_ALEN];
u8 supp_addr[ETH_ALEN];
u8 psk[PMK_LEN];
/* from authenticator */
u8 *auth_eapol;
size_t auth_eapol_len;
/* from supplicant */
u8 *supp_eapol;
size_t supp_eapol_len;
struct wpa_sm *supp;
struct wpa_authenticator *auth_group;
struct wpa_state_machine *auth;
u8 supp_ie[80];
size_t supp_ie_len;
int key_request_done;
int key_request_done1;
int auth_sent;
};
const struct wpa_driver_ops *const wpa_drivers[] = { NULL };
static int auth_read_msg(struct wpa *wpa);
static void supp_eapol_key_request(void *eloop_data, void *user_ctx);
static void usage(void) {
wpa_printf(MSG_INFO,
"usage: test-eapol <auth/supp> <read/write> <file>");
exit(-1);
}
static void write_msg(FILE *f, const u8 *msg, size_t msg_len)
{
u8 len[2];
wpa_printf(MSG_DEBUG, "TEST: Write message to file (msg_len=%u)",
(unsigned int) msg_len);
WPA_PUT_BE16(len, msg_len);
fwrite(len, 2, 1, f);
fwrite(msg, msg_len, 1, f);
}
static u8 * read_msg(FILE *f, size_t *ret_len)
{
u8 len[2];
u16 msg_len;
u8 *msg;
if (fread(len, 2, 1, f) != 1) {
wpa_printf(MSG_ERROR, "TEST-ERROR: Could not read msg len");
eloop_terminate();
return NULL;
}
msg_len = WPA_GET_BE16(len);
msg = os_malloc(msg_len);
if (!msg)
return NULL;
if (msg_len > 0 && fread(msg, msg_len, 1, f) != 1) {
wpa_printf(MSG_ERROR, "TEST-ERROR: Truncated msg (msg_len=%u)",
msg_len);
os_free(msg);
eloop_terminate();
return NULL;
}
wpa_hexdump(MSG_DEBUG, "TEST: Read message from file", msg, msg_len);
*ret_len = msg_len;
return msg;
}
static int supp_get_bssid(void *ctx, u8 *bssid)
{
struct wpa *wpa = ctx;
wpa_printf(MSG_DEBUG, "SUPP: %s", __func__);
os_memcpy(bssid, wpa->auth_addr, ETH_ALEN);
return 0;
}
static void supp_set_state(void *ctx, enum wpa_states state)
{
wpa_printf(MSG_DEBUG, "SUPP: %s(state=%d)", __func__, state);
}
static void auth_eapol_rx(void *eloop_data, void *user_ctx)
{
struct wpa *wpa = eloop_data;
wpa_printf(MSG_DEBUG, "AUTH: RX EAPOL frame");
wpa->auth_sent = 0;
wpa_receive(wpa->auth_group, wpa->auth, wpa->supp_eapol,
wpa->supp_eapol_len);
if (!wpa->auth_sent && wpa->test_peer == SUPP &&
wpa->test_oper == READ) {
/* Speed up process by not going through retransmit timeout */
wpa_printf(MSG_DEBUG,
"AUTH: No response was sent - process next message");
auth_read_msg(wpa);
}
if (wpa->wpa1 && wpa->key_request_done && !wpa->key_request_done1) {
wpa->key_request_done1 = 1;
eloop_register_timeout(0, 0, supp_eapol_key_request,
wpa, NULL);
}
}
static void supp_eapol_rx(void *eloop_data, void *user_ctx)
{
struct wpa *wpa = eloop_data;
wpa_printf(MSG_DEBUG, "SUPP: RX EAPOL frame");
wpa_sm_rx_eapol(wpa->supp, wpa->auth_addr, wpa->auth_eapol,
wpa->auth_eapol_len);
}
static int supp_read_msg(struct wpa *wpa)
{
os_free(wpa->auth_eapol);
wpa->auth_eapol = read_msg(wpa->f, &wpa->auth_eapol_len);
if (!wpa->auth_eapol)
return -1;
eloop_register_timeout(0, 0, supp_eapol_rx, wpa, NULL);
return 0;
}
static int supp_ether_send(void *ctx, const u8 *dest, u16 proto, const u8 *buf,
size_t len)
{
struct wpa *wpa = ctx;
wpa_printf(MSG_DEBUG, "SUPP: %s(dest=" MACSTR " proto=0x%04x "
"len=%lu)",
__func__, MAC2STR(dest), proto, (unsigned long) len);
if (wpa->test_peer == SUPP && wpa->test_oper == WRITE)
write_msg(wpa->f, buf, len);
if (wpa->test_peer == AUTH && wpa->test_oper == READ)
return supp_read_msg(wpa);
os_free(wpa->supp_eapol);
wpa->supp_eapol = os_malloc(len);
if (!wpa->supp_eapol)
return -1;
os_memcpy(wpa->supp_eapol, buf, len);
wpa->supp_eapol_len = len;
eloop_register_timeout(0, 0, auth_eapol_rx, wpa, NULL);
return 0;
}
static u8 * supp_alloc_eapol(void *ctx, u8 type, const void *data,
u16 data_len, size_t *msg_len, void **data_pos)
{
struct ieee802_1x_hdr *hdr;
wpa_printf(MSG_DEBUG, "SUPP: %s(type=%d data_len=%d)",
__func__, type, data_len);
*msg_len = sizeof(*hdr) + data_len;
hdr = os_malloc(*msg_len);
if (hdr == NULL)
return NULL;
hdr->version = 2;
hdr->type = type;
hdr->length = host_to_be16(data_len);
if (data)
os_memcpy(hdr + 1, data, data_len);
else
os_memset(hdr + 1, 0, data_len);
if (data_pos)
*data_pos = hdr + 1;
return (u8 *) hdr;
}
static int supp_get_beacon_ie(void *ctx)
{
struct wpa *wpa = ctx;
const u8 *ie;
size_t ielen;
wpa_printf(MSG_DEBUG, "SUPP: %s", __func__);
ie = wpa_auth_get_wpa_ie(wpa->auth_group, &ielen);
if (ie == NULL || ielen < 1)
return -1;
if (ie[0] == WLAN_EID_RSN)
return wpa_sm_set_ap_rsn_ie(wpa->supp, ie, 2 + ie[1]);
return wpa_sm_set_ap_wpa_ie(wpa->supp, ie, 2 + ie[1]);
}
static int supp_set_key(void *ctx, enum wpa_alg alg,
const u8 *addr, int key_idx, int set_tx,
const u8 *seq, size_t seq_len,
const u8 *key, size_t key_len)
{
wpa_printf(MSG_DEBUG, "SUPP: %s(alg=%d addr=" MACSTR " key_idx=%d "
"set_tx=%d)",
__func__, alg, MAC2STR(addr), key_idx, set_tx);
wpa_hexdump(MSG_DEBUG, "SUPP: set_key - seq", seq, seq_len);
wpa_hexdump(MSG_DEBUG, "SUPP: set_key - key", key, key_len);
return 0;
}
static int supp_mlme_setprotection(void *ctx, const u8 *addr,
int protection_type, int key_type)
{
wpa_printf(MSG_DEBUG, "SUPP: %s(addr=" MACSTR " protection_type=%d "
"key_type=%d)",
__func__, MAC2STR(addr), protection_type, key_type);
return 0;
}
static void supp_cancel_auth_timeout(void *ctx)
{
wpa_printf(MSG_DEBUG, "SUPP: %s", __func__);
}
static void * supp_get_network_ctx(void *ctx)
{
return (void *) 1;
}
static void supp_deauthenticate(void *ctx, u16 reason_code)
{
wpa_printf(MSG_DEBUG, "SUPP: %s(%d)", __func__, reason_code);
}
static enum wpa_states supp_get_state(void *ctx)
{
return WPA_COMPLETED;
}
static int supp_init(struct wpa *wpa)
{
struct wpa_sm_ctx *ctx = os_zalloc(sizeof(*ctx));
if (!ctx)
return -1;
ctx->ctx = wpa;
ctx->msg_ctx = wpa;
ctx->set_state = supp_set_state;
ctx->get_bssid = supp_get_bssid;
ctx->ether_send = supp_ether_send;
ctx->get_beacon_ie = supp_get_beacon_ie;
ctx->alloc_eapol = supp_alloc_eapol;
ctx->set_key = supp_set_key;
ctx->mlme_setprotection = supp_mlme_setprotection;
ctx->cancel_auth_timeout = supp_cancel_auth_timeout;
ctx->get_network_ctx = supp_get_network_ctx;
ctx->deauthenticate = supp_deauthenticate;
ctx->get_state = supp_get_state;
wpa->supp = wpa_sm_init(ctx);
if (!wpa->supp) {
wpa_printf(MSG_DEBUG, "SUPP: wpa_sm_init() failed");
return -1;
}
wpa_sm_set_own_addr(wpa->supp, wpa->supp_addr);
if (wpa->wpa1) {
wpa_sm_set_param(wpa->supp, WPA_PARAM_RSN_ENABLED, 0);
wpa_sm_set_param(wpa->supp, WPA_PARAM_PROTO, WPA_PROTO_WPA);
wpa_sm_set_param(wpa->supp, WPA_PARAM_PAIRWISE,
WPA_CIPHER_TKIP);
wpa_sm_set_param(wpa->supp, WPA_PARAM_GROUP, WPA_CIPHER_TKIP);
wpa_sm_set_param(wpa->supp, WPA_PARAM_KEY_MGMT,
WPA_KEY_MGMT_PSK);
} else {
wpa_sm_set_param(wpa->supp, WPA_PARAM_RSN_ENABLED, 1);
wpa_sm_set_param(wpa->supp, WPA_PARAM_PROTO, WPA_PROTO_RSN);
wpa_sm_set_param(wpa->supp, WPA_PARAM_PAIRWISE,
WPA_CIPHER_CCMP);
wpa_sm_set_param(wpa->supp, WPA_PARAM_GROUP, WPA_CIPHER_CCMP);
wpa_sm_set_param(wpa->supp, WPA_PARAM_KEY_MGMT,
WPA_KEY_MGMT_PSK);
wpa_sm_set_param(wpa->supp, WPA_PARAM_MFP,
MGMT_FRAME_PROTECTION_OPTIONAL);
}
wpa_sm_set_pmk(wpa->supp, wpa->psk, PMK_LEN, NULL, NULL);
wpa->supp_ie_len = sizeof(wpa->supp_ie);
if (wpa_sm_set_assoc_wpa_ie_default(wpa->supp, wpa->supp_ie,
&wpa->supp_ie_len) < 0) {
wpa_printf(MSG_DEBUG, "SUPP: wpa_sm_set_assoc_wpa_ie_default()"
" failed");
return -1;
}
wpa_sm_notify_assoc(wpa->supp, wpa->auth_addr);
return 0;
}
static void auth_logger(void *ctx, const u8 *addr, logger_level level,
const char *txt)
{
if (addr)
wpa_printf(MSG_DEBUG, "AUTH: " MACSTR " - %s",
MAC2STR(addr), txt);
else
wpa_printf(MSG_DEBUG, "AUTH: %s", txt);
}
static int auth_read_msg(struct wpa *wpa)
{
os_free(wpa->supp_eapol);
wpa->supp_eapol = read_msg(wpa->f, &wpa->supp_eapol_len);
if (!wpa->supp_eapol)
return -1;
eloop_register_timeout(0, 0, auth_eapol_rx, wpa, NULL);
return 0;
}
static int auth_send_eapol(void *ctx, const u8 *addr, const u8 *data,
size_t data_len, int encrypt)
{
struct wpa *wpa = ctx;
wpa_printf(MSG_DEBUG, "AUTH: %s(addr=" MACSTR " data_len=%lu "
"encrypt=%d)",
__func__, MAC2STR(addr), (unsigned long) data_len, encrypt);
wpa->auth_sent = 1;
if (wpa->test_peer == AUTH && wpa->test_oper == WRITE)
write_msg(wpa->f, data, data_len);
if (wpa->test_peer == SUPP && wpa->test_oper == READ)
return auth_read_msg(wpa);
os_free(wpa->auth_eapol);
wpa->auth_eapol = os_malloc(data_len);
if (!wpa->auth_eapol)
return -1;
os_memcpy(wpa->auth_eapol, data, data_len);
wpa->auth_eapol_len = data_len;
eloop_register_timeout(0, 0, supp_eapol_rx, wpa, NULL);
return 0;
}
static const u8 * auth_get_psk(void *ctx, const u8 *addr,
const u8 *p2p_dev_addr, const u8 *prev_psk,
size_t *psk_len, int *vlan_id)
{
struct wpa *wpa = ctx;
wpa_printf(MSG_DEBUG, "AUTH: %s (addr=" MACSTR " prev_psk=%p)",
__func__, MAC2STR(addr), prev_psk);
if (vlan_id)
*vlan_id = 0;
if (psk_len)
*psk_len = PMK_LEN;
if (prev_psk)
return NULL;
return wpa->psk;
}
static void supp_eapol_key_request(void *eloop_data, void *user_ctx)
{
struct wpa *wpa = eloop_data;
wpa_printf(MSG_DEBUG, "SUPP: EAPOL-Key Request trigger");
if (wpa->test_peer == SUPP && wpa->test_oper == READ) {
if (!eloop_is_timeout_registered(auth_eapol_rx, wpa, NULL))
auth_read_msg(wpa);
} else {
wpa_sm_key_request(wpa->supp, 0, 1);
}
}
static int auth_set_key(void *ctx, int vlan_id, enum wpa_alg alg,
const u8 *addr, int idx, u8 *key,
size_t key_len)
{
struct wpa *wpa = ctx;
wpa_printf(MSG_DEBUG, "AUTH: %s (vlan_id=%d alg=%d idx=%d key_len=%d)",
__func__, vlan_id, alg, idx, (int) key_len);
if (addr)
wpa_printf(MSG_DEBUG, "AUTH: addr=" MACSTR, MAC2STR(addr));
if (alg != WPA_ALG_NONE && idx == 0 && key_len > 0 &&
!wpa->key_request_done) {
wpa_printf(MSG_DEBUG, "Test EAPOL-Key Request");
wpa->key_request_done = 1;
if (!wpa->wpa1)
eloop_register_timeout(0, 0, supp_eapol_key_request,
wpa, NULL);
}
return 0;
}
static int auth_init_group(struct wpa *wpa)
{
struct wpa_auth_config conf;
struct wpa_auth_callbacks cb;
wpa_printf(MSG_DEBUG, "AUTH: Initializing group state machine");
os_memset(&conf, 0, sizeof(conf));
if (wpa->wpa1) {
conf.wpa = 1;
conf.wpa_key_mgmt = WPA_KEY_MGMT_PSK;
conf.wpa_pairwise = WPA_CIPHER_TKIP;
conf.wpa_group = WPA_CIPHER_TKIP;
} else {
conf.wpa = 2;
conf.wpa_key_mgmt = WPA_KEY_MGMT_PSK;
conf.wpa_pairwise = WPA_CIPHER_CCMP;
conf.rsn_pairwise = WPA_CIPHER_CCMP;
conf.wpa_group = WPA_CIPHER_CCMP;
conf.ieee80211w = 2;
conf.group_mgmt_cipher = WPA_CIPHER_AES_128_CMAC;
}
conf.eapol_version = 2;
conf.wpa_group_update_count = 4;
conf.wpa_pairwise_update_count = 4;
os_memset(&cb, 0, sizeof(cb));
cb.logger = auth_logger;
cb.send_eapol = auth_send_eapol;
cb.get_psk = auth_get_psk;
cb.set_key = auth_set_key,
wpa->auth_group = wpa_init(wpa->auth_addr, &conf, &cb, wpa);
if (!wpa->auth_group) {
wpa_printf(MSG_DEBUG, "AUTH: wpa_init() failed");
return -1;
}
return 0;
}
static int auth_init(struct wpa *wpa)
{
if (wpa->test_peer == AUTH && wpa->test_oper == READ)
return supp_read_msg(wpa);
wpa->auth = wpa_auth_sta_init(wpa->auth_group, wpa->supp_addr, NULL);
if (!wpa->auth) {
wpa_printf(MSG_DEBUG, "AUTH: wpa_auth_sta_init() failed");
return -1;
}
if (wpa_validate_wpa_ie(wpa->auth_group, wpa->auth, 2412, wpa->supp_ie,
wpa->supp_ie_len, NULL, 0, NULL, 0, NULL, 0) !=
WPA_IE_OK) {
wpa_printf(MSG_DEBUG, "AUTH: wpa_validate_wpa_ie() failed");
return -1;
}
wpa_auth_sm_event(wpa->auth, WPA_ASSOC);
wpa_auth_sta_associated(wpa->auth_group, wpa->auth);
return 0;
}
static void deinit(struct wpa *wpa)
{
wpa_auth_sta_deinit(wpa->auth);
wpa_sm_deinit(wpa->supp);
wpa_deinit(wpa->auth_group);
os_free(wpa->auth_eapol);
wpa->auth_eapol = NULL;
os_free(wpa->supp_eapol);
wpa->supp_eapol = NULL;
}
int main(int argc, char *argv[])
{
const char *file;
int ret;
struct wpa wpa;
if (os_program_init())
return -1;
wpa_debug_level = 0;
wpa_debug_show_keys = 1;
os_memset(&wpa, 0, sizeof(wpa));
if (argc < 4)
usage();
if (os_strcmp(argv[1], "auth") == 0) {
wpa.test_peer = AUTH;
} else if (os_strcmp(argv[1], "auth1") == 0) {
wpa.test_peer = AUTH;
wpa.wpa1 = 1;
} else if (os_strcmp(argv[1], "supp") == 0) {
wpa.test_peer = SUPP;
} else if (os_strcmp(argv[1], "supp1") == 0) {
wpa.test_peer = SUPP;
wpa.wpa1 = 1;
} else {
usage();
}
if (os_strcmp(argv[2], "read") == 0)
wpa.test_oper = READ;
else if (os_strcmp(argv[2], "write") == 0)
wpa.test_oper = WRITE;
else
usage();
file = argv[3];
wpa.f = fopen(file, wpa.test_oper == READ ? "r" : "w");
if (!wpa.f)
return -1;
os_memset(wpa.auth_addr, 0x12, ETH_ALEN);
os_memset(wpa.supp_addr, 0x32, ETH_ALEN);
os_memset(wpa.psk, 0x44, PMK_LEN);
if (eloop_init()) {
wpa_printf(MSG_ERROR, "Failed to initialize event loop");
goto fail;
}
if (auth_init_group(&wpa) < 0)
goto fail;
if (supp_init(&wpa) < 0)
goto fail;
if (auth_init(&wpa) < 0)
goto fail;
wpa_printf(MSG_DEBUG, "Starting eloop");
eloop_run();
wpa_printf(MSG_DEBUG, "eloop done");
ret = 0;
fail:
deinit(&wpa);
fclose(wpa.f);
eloop_destroy();
os_program_deinit();
return ret;
}