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mbedtls: fix custom certificate bundle test case

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This commit is contained in:
Harshit Malpani 2022-08-24 15:57:57 +05:30
parent 52576faa9e
commit d78fddd81a
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GPG Key ID: FF1193D150EF75C3
1 changed files with 63 additions and 25 deletions
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88
components/mbedtls/test/test_esp_crt_bundle.c
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@ -29,6 +29,7 @@
#include "unity.h"
#include "test_utils.h"
#include "unity_test_utils.h"
#define SERVER_ADDRESS "localhost"
#define SERVER_PORT "4433"
@ -51,6 +52,7 @@ extern const uint8_t wrong_sig_crt_pem_end[] asm("_binary_wrong_sig_crt_esp32_
extern const uint8_t correct_sig_crt_pem_start[] asm("_binary_correct_sig_crt_esp32_com_pem_start");
extern const uint8_t correct_sig_crt_pem_end[] asm("_binary_correct_sig_crt_esp32_com_pem_end");
#define SEM_TIMEOUT 10000
typedef struct {
mbedtls_ssl_context ssl;
mbedtls_net_context listen_fd;
@ -187,7 +189,7 @@ void server_task(void *pvParameters)
exit:
endpoint_teardown(&server);
xSemaphoreGive(*sema);
vTaskDelete(NULL);
vTaskSuspend(NULL);
}
@ -250,25 +252,58 @@ esp_err_t client_setup(mbedtls_endpoint_t *client)
return ESP_OK;
}
int client_task(const uint8_t *bundle, size_t bundle_size, esp_crt_validate_res_t *res)
void client_task(void *pvParameters)
{
SemaphoreHandle_t *client_signal_sem = (SemaphoreHandle_t *) pvParameters;
int ret = ESP_FAIL;
mbedtls_endpoint_t client;
*res = ESP_CRT_VALIDATE_UNKNOWN;
esp_crt_validate_res_t res = ESP_CRT_VALIDATE_UNKNOWN;
if (client_setup(&client) != ESP_OK) {
ESP_LOGE(TAG, "SSL client setup failed");
goto exit;
}
esp_crt_bundle_attach(&client.conf);
if (bundle) {
/* Set a bundle different from the menuconfig bundle */
esp_crt_bundle_set(bundle, bundle_size);
/* Test with default crt bundle that doesnt contain the ca crt */
ESP_LOGI(TAG, "Connecting to %s:%s...", SERVER_ADDRESS, SERVER_PORT);
if ((ret = mbedtls_net_connect(&client.client_fd, SERVER_ADDRESS, SERVER_PORT, MBEDTLS_NET_PROTO_TCP)) != 0) {
ESP_LOGE(TAG, "mbedtls_net_connect returned -%x", -ret);
goto exit;
}
ESP_LOGI(TAG, "Connected.");
mbedtls_ssl_set_bio(&client.ssl, &client.client_fd, mbedtls_net_send, mbedtls_net_recv, NULL);
ESP_LOGI(TAG, "Performing the SSL/TLS handshake with bundle that is missing the server root certificate");
while ( ( ret = mbedtls_ssl_handshake( &client.ssl ) ) != 0 ) {
if ( ret != MBEDTLS_ERR_SSL_WANT_READ && ret != MBEDTLS_ERR_SSL_WANT_WRITE ) {
printf( "mbedtls_ssl_handshake failed with -0x%x\n", -ret );
break;
}
}
ESP_LOGI(TAG, "Verifying peer X.509 certificate for bundle ...");
ret = mbedtls_ssl_get_verify_result(&client.ssl);
res = (ret == 0) ? ESP_CRT_VALIDATE_OK : ESP_CRT_VALIDATE_FAIL;
if (res == ESP_CRT_VALIDATE_OK) {
ESP_LOGI(TAG, "Certificate verification passed!");
} else {
ESP_LOGE(TAG, "Certificate verification failed!");
}
TEST_ASSERT(res == ESP_CRT_VALIDATE_FAIL);
// Reset session before new connection
mbedtls_ssl_close_notify(&client.ssl);
mbedtls_ssl_session_reset(&client.ssl);
mbedtls_net_free( &client.client_fd);
/* Test with bundle that does contain the CA crt */
esp_crt_bundle_attach(&client.conf);
esp_crt_bundle_set(server_cert_bundle_start, server_cert_bundle_end - server_cert_bundle_start);
ESP_LOGI(TAG, "Connecting to %s:%s...", SERVER_ADDRESS, SERVER_PORT);
if ((ret = mbedtls_net_connect(&client.client_fd, SERVER_ADDRESS, SERVER_PORT, MBEDTLS_NET_PROTO_TCP)) != 0) {
ESP_LOGE(TAG, "mbedtls_net_connect returned -%x", -ret);
@ -289,14 +324,14 @@ int client_task(const uint8_t *bundle, size_t bundle_size, esp_crt_validate_res_
ESP_LOGI(TAG, "Verifying peer X.509 certificate for bundle ...");
ret = mbedtls_ssl_get_verify_result(&client.ssl);
*res = (ret == 0) ? ESP_CRT_VALIDATE_OK : ESP_CRT_VALIDATE_FAIL;
res = (ret == 0) ? ESP_CRT_VALIDATE_OK : ESP_CRT_VALIDATE_FAIL;
if (*res == ESP_CRT_VALIDATE_OK) {
if (res == ESP_CRT_VALIDATE_OK) {
ESP_LOGI(TAG, "Certificate verification passed!");
} else {
ESP_LOGE(TAG, "Certificate verification failed!");
}
TEST_ASSERT(res == ESP_CRT_VALIDATE_OK);
// Reset session before new connection
mbedtls_ssl_close_notify(&client.ssl);
@ -309,42 +344,45 @@ exit:
mbedtls_ssl_session_reset(&client.ssl);
esp_crt_bundle_detach(&client.conf);
endpoint_teardown(&client);
return ret;
xSemaphoreGive(*client_signal_sem);
vTaskSuspend(NULL);
}
TEST_CASE("custom certificate bundle", "[mbedtls]")
{
esp_crt_validate_res_t validate_res;
test_case_uses_tcpip();
SemaphoreHandle_t signal_sem = xSemaphoreCreateBinary();
TEST_ASSERT_NOT_NULL(signal_sem);
exit_flag = false;
xTaskCreate(server_task, "server task", 8192, &signal_sem, 10, NULL);
TaskHandle_t server_task_handle;
xTaskCreate(server_task, "server task", 8192, &signal_sem, 10, &server_task_handle);
// Wait for the server to start up
if (!xSemaphoreTake(signal_sem, 10000 / portTICK_PERIOD_MS)) {
if (!xSemaphoreTake(signal_sem, SEM_TIMEOUT / portTICK_PERIOD_MS)) {
TEST_FAIL_MESSAGE("signal_sem not released, server start failed");
}
/* Test with default crt bundle that doesnt contain the ca crt */
client_task(NULL, 0, &validate_res);
TEST_ASSERT(validate_res == ESP_CRT_VALIDATE_FAIL);
SemaphoreHandle_t client_signal_sem = xSemaphoreCreateBinary();
TEST_ASSERT_NOT_NULL(client_signal_sem);
/* Test with bundle that does contain the CA crt */
client_task(server_cert_bundle_start, server_cert_bundle_end - server_cert_bundle_start, &validate_res);
TEST_ASSERT(validate_res == ESP_CRT_VALIDATE_OK);
TaskHandle_t client_task_handle;
xTaskCreate(client_task, "client task", 8192, &client_signal_sem, 10, &client_task_handle);
if (!xSemaphoreTake(client_signal_sem, SEM_TIMEOUT / portTICK_PERIOD_MS)) {
TEST_FAIL_MESSAGE("client_signal_sem not released, client exit failed");
}
unity_utils_task_delete(client_task_handle);
exit_flag = true;
if (!xSemaphoreTake(signal_sem, 10000 / portTICK_PERIOD_MS)) {
if (!xSemaphoreTake(signal_sem, SEM_TIMEOUT / portTICK_PERIOD_MS)) {
TEST_FAIL_MESSAGE("signal_sem not released, server exit failed");
}
unity_utils_task_delete(server_task_handle);
vSemaphoreDelete(client_signal_sem);
vSemaphoreDelete(signal_sem);
}