3
0
mirror of https://git.kernel.org/pub/scm/network/wireless/iwd.git synced 2024-11-18 10:19:24 +01:00
iwd/unit/test-sae.c

568 lines
15 KiB
C
Raw Normal View History

2018-08-15 19:36:21 +02:00
/*
*
* Wireless daemon for Linux
*
* Copyright (C) 2018 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 <string.h>
#include <assert.h>
#include <ell/ell.h>
#include "src/util.h"
#include "src/ie.h"
#include "src/handshake.h"
#include "src/mpdu.h"
#include "src/sae.h"
struct test_handshake_state {
struct handshake_state super;
};
struct test_data {
/* flag for testing anti clogging */
bool test_anti_clogging;
/* true if a commit message was sent and verified */
bool commit_success;
/* true if a confirm message was sent and verified */
bool confirm_success;
/* true if a rejection packet was sent */
bool tx_reject_occurred;
/* true if the tx function was called */
bool tx_called;
/* copy of clogging token (if present) */
uint8_t test_clogging_token[32];
/* copy of last packet sent */
uint8_t tx_packet[512];
size_t tx_packet_len;
/* status in complete callback */
uint16_t status;
struct handshake_state *handshake;
};
static uint8_t spa[] = {2, 0, 0, 0, 0, 0};
static uint8_t aa[] = {2, 0, 0, 0, 0, 1};
static char *passphrase = "secret123";
static void test_handshake_state_free(struct handshake_state *hs)
{
struct test_handshake_state *ths =
container_of(hs, struct test_handshake_state, super);
l_free(ths);
}
static struct handshake_state *test_handshake_state_new(uint32_t ifindex)
{
struct test_handshake_state *ths;
ths = l_new(struct test_handshake_state, 1);
ths->super.ifindex = ifindex;
ths->super.free = test_handshake_state_free;
return &ths->super;
}
static void test_complete_func(uint16_t status, void *user_data)
{
struct test_data *td = user_data;
td->status = status;
}
static int test_tx_func(const uint8_t *dest, const uint8_t *frame, size_t len,
void *user_data)
{
struct test_data *td = user_data;
uint16_t trans;
td->tx_called = true;
memset(td->tx_packet, 0, sizeof(td->tx_packet));
memcpy(td->tx_packet, frame, len);
td->tx_packet_len = len;
assert(!memcmp(dest, aa, 6));
if (len <= 6 && l_get_le16(frame + 2) != 0) {
2018-08-15 19:36:21 +02:00
td->tx_reject_occurred = true;
return 0;
}
trans = l_get_le16(frame); /* transaction */
2018-08-15 19:36:21 +02:00
switch (trans) {
case 1:
assert(l_get_le16(frame + 2) == 0); /* status */
assert(l_get_le16(frame + 4) == 19); /* group */
2018-08-15 19:36:21 +02:00
if (len > 102) {
/* clogging token */
assert(len == 134);
assert(!memcmp(frame + 6, td->test_clogging_token, 32));
} else {
assert(len == 102);
}
td->commit_success = true;
return 0;
case 2:
assert(l_get_le16(frame + 2) == 0);
2018-08-15 19:36:21 +02:00
assert(len == 38);
td->confirm_success = true;
return 0;
}
assert(false);
return 0;
}
static struct sae_sm *test_initialize(struct test_data *td)
{
struct sae_sm *sm;
struct handshake_state *hs = test_handshake_state_new(1);
td->handshake = hs;
handshake_state_set_supplicant_address(hs, spa);
handshake_state_set_authenticator_address(hs, aa);
handshake_state_set_passphrase(hs, passphrase);
memset(td->test_clogging_token, 0xde, 32);
sm = sae_sm_new(hs, test_tx_func, test_complete_func, td);
td->commit_success = false;
sae_start(sm);
assert(td->commit_success == true);
return sm;
}
static void test_destruct(struct test_data *td)
{
handshake_state_free(td->handshake);
l_free(td);
}
static uint8_t aa_commit[] = {
0x01, 0x00, 0x00, 0x00, 0x13, 0x00, 0x50, 0x5b, 0xb2, 0x1f, 0xaf, 0x7d,
0xaf, 0x14, 0x7c, 0x7b, 0x19, 0xc9, 0x72, 0x82, 0xbc, 0x1a, 0xdb, 0xa1,
0xbd, 0x6e, 0x5a, 0xc7, 0x58, 0x0a, 0x65, 0x1f, 0xd2, 0xde, 0xb0, 0x66,
0xa5, 0xf9, 0x3e, 0x95, 0x4a, 0xe1, 0x83, 0xdb, 0x8a, 0xf5, 0x47, 0x8a,
0x9d, 0x88, 0x5b, 0x58, 0xb9, 0x5b, 0xfb, 0x99, 0xff, 0xbe, 0xa0, 0xe8,
0x70, 0x9d, 0x99, 0x2e, 0x8f, 0xa3, 0x53, 0x57, 0x3c, 0x49, 0x81, 0x0e,
0xbc, 0x8f, 0xbc, 0xe7, 0x77, 0x8a, 0x5b, 0xf0, 0xae, 0x4a, 0xfb, 0xcd,
0x81, 0xc0, 0x97, 0xb2, 0xf8, 0xb9, 0x12, 0xed, 0x3b, 0xd5, 0x3c, 0x5c,
0xb2, 0x3a, 0xcc, 0x22, 0xe3, 0x9e
};
static uint8_t aa_confirm[] = {
0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x0e, 0xf7, 0x5c, 0x1c, 0xab,
0x7c, 0x29, 0xa1, 0x79, 0x22, 0xe4, 0x3b, 0x64, 0xb8, 0xf0, 0x70, 0x25,
0x40, 0xcc, 0x78, 0x81, 0x27, 0x12, 0xca, 0xa9, 0xf5, 0xe5, 0x0f, 0xa7,
0x73, 0x6d
};
static void test_confirm_timeout(const void *arg)
{
struct test_data *td = l_new(struct test_data, 1);
struct sae_sm *sm = test_initialize(td);
int i;
sae_rx_packet(sm, aa, aa_commit, sizeof(aa_commit));
2018-08-15 19:36:21 +02:00
assert(td->confirm_success);
assert(l_get_le16(td->tx_packet + 4) == 1);
2018-08-15 19:36:21 +02:00
for (i = 1; i < 5; i++) {
sae_timeout(sm);
assert(l_get_le16(td->tx_packet + 4) == i + 1);
2018-08-15 19:36:21 +02:00
}
sae_timeout(sm);
assert(td->status != 0);
test_destruct(td);
}
static void test_commit_timeout(const void *arg)
{
struct test_data *td = l_new(struct test_data, 1);
struct sae_sm *sm = test_initialize(td);
uint8_t last_packet[512];
int i;
memcpy(last_packet, td->tx_packet, td->tx_packet_len);
for (i = 0; i < 4; i++) {
sae_timeout(sm);
assert(!memcmp(last_packet, td->tx_packet, td->tx_packet_len));
memcpy(last_packet, td->tx_packet, td->tx_packet_len);
}
sae_timeout(sm);
assert(td->status != 0);
test_destruct(td);
}
static void test_clogging(const void *arg)
{
uint8_t frame[38];
struct test_data *td = l_new(struct test_data, 1);
struct sae_sm *sm = test_initialize(td);
l_put_le16(1, frame);
l_put_le16(MMPDU_REASON_CODE_ANTI_CLOGGING_TOKEN_REQ, frame + 2);
l_put_le16(19, frame + 4);
2018-08-15 19:36:21 +02:00
memcpy(frame + 6, td->test_clogging_token, 32);
td->test_anti_clogging = true;
td->commit_success = false;
sae_rx_packet(sm, aa, frame, 38);
assert(td->commit_success == true);
test_destruct(td);
sae_sm_free(sm);
}
static void test_early_confirm(const void *arg)
{
struct test_data *td = l_new(struct test_data, 1);
struct sae_sm *sm = test_initialize(td);
uint8_t frame[38];
2018-08-15 20:38:36 +02:00
uint8_t first_commit[102];
2018-08-15 19:36:21 +02:00
/* save the initial commit */
memcpy(first_commit, td->tx_packet, td->tx_packet_len);
l_put_u16(2, frame);
l_put_u16(0, frame + 2);
memset(frame + 4, 0xfe, 32);
td->test_anti_clogging = false;
sae_rx_packet(sm, aa, frame, 36);
/* verify earlier commit matched most recent */
assert(!memcmp(td->tx_packet, first_commit, td->tx_packet_len));
test_destruct(td);
sae_sm_free(sm);
}
static void test_reflection(const void *arg)
{
struct test_data *td = l_new(struct test_data, 1);
struct sae_sm *sm = test_initialize(td);
td->tx_called = false;
/* send reflect same commit */
sae_rx_packet(sm, aa, td->tx_packet, td->tx_packet_len);
assert(td->tx_called == false);
test_destruct(td);
sae_sm_free(sm);
}
static void test_malformed_commit(const void *arg)
{
struct test_data *td = l_new(struct test_data, 1);
struct sae_sm *sm = test_initialize(td);
/* dont send entire commit */
sae_rx_packet(sm, aa, aa_commit, sizeof(aa_commit) - 20);
assert(td->status != 0);
test_destruct(td);
}
static void test_malformed_confirm(const void *arg)
{
struct test_data *td = l_new(struct test_data, 1);
struct sae_sm *sm = test_initialize(td);
sae_rx_packet(sm, aa, aa_commit, sizeof(aa_commit));
assert(td->commit_success);
/* dont send entire confirm */
sae_rx_packet(sm, aa, aa_confirm, sizeof(aa_confirm) - 10);
assert(td->status != 0);
test_destruct(td);
}
static uint8_t aa_commit_bad_group[] = {
0x01, 0x00, 0x00, 0x00, 0x14, 0x00, 0x50, 0x5b, 0xb2, 0x1f, 0xaf, 0x7d,
0xaf, 0x14, 0x7c, 0x7b, 0x19, 0xc9, 0x72, 0x82, 0xbc, 0x1a, 0xdb, 0xa1,
0xbd, 0x6e, 0x5a, 0xc7, 0x58, 0x0a, 0x65, 0x1f, 0xd2, 0xde, 0xb0, 0x66,
0xa5, 0xf9, 0x3e, 0x95, 0x4a, 0xe1, 0x83, 0xdb, 0x8a, 0xf5, 0x47, 0x8a,
0x9d, 0x88, 0x5b, 0x58, 0xb9, 0x5b, 0xfb, 0x99, 0xff, 0xbe, 0xa0, 0xe8,
0x70, 0x9d, 0x99, 0x2e, 0x8f, 0xa3, 0x53, 0x57, 0x3c, 0x49, 0x81, 0x0e,
0xbc, 0x8f, 0xbc, 0xe7, 0x77, 0x8a, 0x5b, 0xf0, 0xae, 0x4a, 0xfb, 0xcd,
0x81, 0xc0, 0x97, 0xb2, 0xf8, 0xb9, 0x12, 0xed, 0x3b, 0xd5, 0x3c, 0x5c,
0xb2, 0x3a, 0xcc, 0x22, 0xe3, 0x9e
};
static void test_bad_group(const void *arg)
{
struct test_data *td = l_new(struct test_data, 1);
struct sae_sm *sm = test_initialize(td);
sae_rx_packet(sm, aa, aa_commit_bad_group, sizeof(aa_commit_bad_group));
assert(td->tx_reject_occurred);
assert(td->status == MMPDU_REASON_CODE_UNSUPP_FINITE_CYCLIC_GROUP);
test_destruct(td);
}
static int end_to_end_tx_func(const uint8_t *dest, const uint8_t *frame,
size_t len, void *user_data)
{
struct test_data *td = user_data;
memcpy(td->tx_packet, frame, len);
td->tx_packet_len = len;
return 0;
}
static void test_bad_confirm(const void *arg)
{
struct sae_sm *sm1;
struct sae_sm *sm2;
struct test_data *td1 = l_new(struct test_data, 1);
struct test_data *td2 = l_new(struct test_data, 1);
struct handshake_state *hs1 = test_handshake_state_new(1);
struct handshake_state *hs2 = test_handshake_state_new(2);
uint8_t tmp_commit[512];
size_t tmp_commit_len;
td1->status = 0xffff;
td2->status = 0xffff;
handshake_state_set_supplicant_address(hs1, spa);
handshake_state_set_authenticator_address(hs1, aa);
handshake_state_set_passphrase(hs1, passphrase);
handshake_state_set_supplicant_address(hs2, aa);
handshake_state_set_authenticator_address(hs2, spa);
handshake_state_set_passphrase(hs2, passphrase);
handshake_state_set_authenticator(hs2, true);
sm1 = sae_sm_new(hs1, end_to_end_tx_func, test_complete_func, td1);
sm2 = sae_sm_new(hs2, end_to_end_tx_func, test_complete_func, td2);
/* both peers send out commit */
sae_start(sm1);
sae_start(sm2);
/* save sm1 commit, tx_packet will get overwritten with confirm */
memcpy(tmp_commit, td1->tx_packet, td1->tx_packet_len);
tmp_commit_len = td1->tx_packet_len;
/* rx commit for both peers */
sae_rx_packet(sm1, aa, td2->tx_packet, td2->tx_packet_len);
sae_rx_packet(sm2, spa, tmp_commit, tmp_commit_len);
/* both peers should now have sent confirm */
/* rx confirm for both peers */
sae_rx_packet(sm1, aa, td2->tx_packet, td2->tx_packet_len);
/* muck with a byte in the confirm */
td1->tx_packet[10] = ~td1->tx_packet[10];
sae_rx_packet(sm2, spa, td1->tx_packet, td1->tx_packet_len);
assert(td1->status == 0);
assert(td2->status != 0);
handshake_state_free(hs1);
handshake_state_free(hs2);
sae_sm_free(sm1);
/* sm2 gets freed by sae since it failed */
l_free(td1);
l_free(td2);
}
static void test_confirm_after_accept(const void *arg)
{
struct sae_sm *sm1;
struct sae_sm *sm2;
struct test_data *td1 = l_new(struct test_data, 1);
struct test_data *td2 = l_new(struct test_data, 1);
struct handshake_state *hs1 = test_handshake_state_new(1);
struct handshake_state *hs2 = test_handshake_state_new(2);
uint8_t tmp_commit[512];
size_t tmp_commit_len;
td1->status = 0xffff;
td2->status = 0xffff;
handshake_state_set_supplicant_address(hs1, spa);
handshake_state_set_authenticator_address(hs1, aa);
handshake_state_set_passphrase(hs1, passphrase);
handshake_state_set_supplicant_address(hs2, aa);
handshake_state_set_authenticator_address(hs2, spa);
handshake_state_set_passphrase(hs2, passphrase);
handshake_state_set_authenticator(hs2, true);
sm1 = sae_sm_new(hs1, end_to_end_tx_func, test_complete_func, td1);
sm2 = sae_sm_new(hs2, end_to_end_tx_func, test_complete_func, td2);
/* both peers send out commit */
sae_start(sm1);
sae_start(sm2);
/* save sm1 commit, tx_packet will get overwritten with confirm */
memcpy(tmp_commit, td1->tx_packet, td1->tx_packet_len);
tmp_commit_len = td1->tx_packet_len;
/* rx commit for both peers */
sae_rx_packet(sm1, aa, td2->tx_packet, td2->tx_packet_len);
sae_rx_packet(sm2, spa, tmp_commit, tmp_commit_len);
/* both peers should now have sent confirm */
/* rx confirm for one peer, sm1 should accept confirm */
sae_rx_packet(sm1, aa, td2->tx_packet, td2->tx_packet_len);
assert(td1->status == 0);
/* simulate sm2 not receiving confirm and resending its confirm */
sae_timeout(sm2);
sae_rx_packet(sm1, aa, td2->tx_packet, td2->tx_packet_len);
/* sc should be set to 0xffff */
assert(l_get_u16(td1->tx_packet + 4) == 0xffff);
/* sm1 should respond with a new confirm, and accept */
sae_rx_packet(sm2, spa, td1->tx_packet, td1->tx_packet_len);
assert(td1->status == 0);
assert(td2->status == 0);
handshake_state_free(hs1);
handshake_state_free(hs2);
sae_sm_free(sm1);
sae_sm_free(sm2);
l_free(td1);
l_free(td2);
}
static void test_end_to_end(const void *arg)
{
struct sae_sm *sm1;
struct sae_sm *sm2;
struct test_data *td1 = l_new(struct test_data, 1);
struct test_data *td2 = l_new(struct test_data, 1);
struct handshake_state *hs1 = test_handshake_state_new(1);
struct handshake_state *hs2 = test_handshake_state_new(2);
uint8_t tmp_commit[512];
size_t tmp_commit_len;
td1->status = 0xffff;
td2->status = 0xffff;
handshake_state_set_supplicant_address(hs1, spa);
handshake_state_set_authenticator_address(hs1, aa);
handshake_state_set_passphrase(hs1, passphrase);
handshake_state_set_supplicant_address(hs2, aa);
handshake_state_set_authenticator_address(hs2, spa);
handshake_state_set_passphrase(hs2, passphrase);
handshake_state_set_authenticator(hs2, true);
sm1 = sae_sm_new(hs1, end_to_end_tx_func, test_complete_func, td1);
sm2 = sae_sm_new(hs2, end_to_end_tx_func, test_complete_func, td2);
/* both peers send out commit */
sae_start(sm1);
sae_start(sm2);
/* save sm1 commit, tx_packet will get overwritten with confirm */
memcpy(tmp_commit, td1->tx_packet, td1->tx_packet_len);
tmp_commit_len = td1->tx_packet_len;
/* rx commit for both peers */
sae_rx_packet(sm1, aa, td2->tx_packet, td2->tx_packet_len);
sae_rx_packet(sm2, spa, tmp_commit, tmp_commit_len);
/* both peers should now have sent confirm */
/* rx confirm for both peers */
sae_rx_packet(sm1, aa, td2->tx_packet, td2->tx_packet_len);
sae_rx_packet(sm2, spa, td1->tx_packet, td1->tx_packet_len);
assert(td1->status == 0);
assert(td2->status == 0);
handshake_state_free(hs1);
handshake_state_free(hs2);
sae_sm_free(sm1);
sae_sm_free(sm2);
l_free(td1);
l_free(td2);
}
int main(int argc, char *argv[])
{
l_test_init(&argc, &argv);
2018-08-23 21:38:55 +02:00
if (!l_getrandom_is_supported()) {
l_info("l_getrandom not supported, skipping...");
goto done;
}
2018-08-15 19:36:21 +02:00
l_test_add("SAE commit timeout", test_commit_timeout, NULL);
l_test_add("SAE confirm timeout", test_confirm_timeout, NULL);
l_test_add("SAE anti-clogging", test_clogging, NULL);
l_test_add("SAE early confirm", test_early_confirm, NULL);
l_test_add("SAE reflection", test_reflection, NULL);
l_test_add("SAE malformed commit", test_malformed_commit, NULL);
l_test_add("SAE malformed confirm", test_malformed_confirm, NULL);
l_test_add("SAE bad group", test_bad_group, NULL);
l_test_add("SAE bad confirm", test_bad_confirm, NULL);
l_test_add("SAE confirm after accept", test_confirm_after_accept, NULL);
l_test_add("SAE end-to-end", test_end_to_end, NULL);
2018-08-23 21:38:55 +02:00
done:
2018-08-15 19:36:21 +02:00
return l_test_run();
}