| /* |
| * Copyright 2016 The OpenSSL Project Authors. All Rights Reserved. |
| * |
| * Licensed under the OpenSSL license (the "License"). You may not use |
| * this file except in compliance with the License. You can obtain a copy |
| * in the file LICENSE in the source distribution or at |
| * https://www.openssl.org/source/license.html |
| */ |
| |
| #include <ctype.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| |
| #include <openssl/ct.h> |
| #include <openssl/err.h> |
| #include <openssl/pem.h> |
| #include <openssl/x509.h> |
| #include <openssl/x509v3.h> |
| #include "testutil.h" |
| |
| #ifndef OPENSSL_NO_CT |
| |
| /* Used when declaring buffers to read text files into */ |
| #define CT_TEST_MAX_FILE_SIZE 8096 |
| |
| static char *certs_dir = NULL; |
| static char *ct_dir = NULL; |
| |
| typedef struct ct_test_fixture { |
| const char *test_case_name; |
| /* The CT log store to use during tests */ |
| CTLOG_STORE* ctlog_store; |
| /* Set the following to test handling of SCTs in X509 certificates */ |
| const char *certs_dir; |
| char *certificate_file; |
| char *issuer_file; |
| int expected_sct_count; |
| /* Set the following to test handling of SCTs in TLS format */ |
| const unsigned char *tls_sct; |
| size_t tls_sct_len; |
| SCT *sct; |
| /* |
| * A file to load the expected SCT text from. |
| * This text will be compared to the actual text output during the test. |
| * A maximum of |CT_TEST_MAX_FILE_SIZE| bytes will be read of this file. |
| */ |
| const char *sct_dir; |
| const char *sct_text_file; |
| /* Whether to test the validity of the SCT(s) */ |
| int test_validity; |
| |
| } CT_TEST_FIXTURE; |
| |
| static CT_TEST_FIXTURE set_up(const char *const test_case_name) |
| { |
| CT_TEST_FIXTURE fixture; |
| int setup_ok = 1; |
| CTLOG_STORE *ctlog_store; |
| |
| memset(&fixture, 0, sizeof(fixture)); |
| |
| ctlog_store = CTLOG_STORE_new(); |
| |
| if (ctlog_store == NULL) { |
| setup_ok = 0; |
| fprintf(stderr, "Failed to create a new CT log store\n"); |
| goto end; |
| } |
| |
| if (CTLOG_STORE_load_default_file(ctlog_store) != 1) { |
| setup_ok = 0; |
| fprintf(stderr, "Failed to load CT log list\n"); |
| goto end; |
| } |
| |
| fixture.test_case_name = test_case_name; |
| fixture.ctlog_store = ctlog_store; |
| |
| end: |
| if (!setup_ok) { |
| exit(EXIT_FAILURE); |
| } |
| return fixture; |
| } |
| |
| static void tear_down(CT_TEST_FIXTURE fixture) |
| { |
| CTLOG_STORE_free(fixture.ctlog_store); |
| SCT_free(fixture.sct); |
| ERR_print_errors_fp(stderr); |
| } |
| |
| static char *mk_file_path(const char *dir, const char *file) |
| { |
| char *full_file = NULL; |
| size_t full_file_l = 0; |
| const char *sep = ""; |
| #ifndef OPENSSL_SYS_VMS |
| sep = "/"; |
| #endif |
| |
| full_file_l = strlen(dir) + strlen(sep) + strlen(file) + 1; |
| full_file = OPENSSL_zalloc(full_file_l); |
| if (full_file != NULL) { |
| OPENSSL_strlcpy(full_file, dir, full_file_l); |
| OPENSSL_strlcat(full_file, sep, full_file_l); |
| OPENSSL_strlcat(full_file, file, full_file_l); |
| } |
| |
| return full_file; |
| } |
| |
| static X509 *load_pem_cert(const char *dir, const char *file) |
| { |
| X509 *cert = NULL; |
| char *file_path = mk_file_path(dir, file); |
| |
| if (file_path != NULL) { |
| BIO *cert_io = BIO_new_file(file_path, "r"); |
| OPENSSL_free(file_path); |
| |
| if (cert_io != NULL) |
| cert = PEM_read_bio_X509(cert_io, NULL, NULL, NULL); |
| |
| BIO_free(cert_io); |
| } |
| return cert; |
| } |
| |
| static int read_text_file(const char *dir, const char *file, |
| char *buffer, int buffer_length) |
| { |
| int result = -1; |
| char *file_path = mk_file_path(dir, file); |
| |
| if (file_path != NULL) { |
| BIO *file_io = BIO_new_file(file_path, "r"); |
| OPENSSL_free(file_path); |
| |
| if (file_io != NULL) { |
| result = BIO_read(file_io, buffer, buffer_length); |
| BIO_free(file_io); |
| } |
| } |
| |
| return result; |
| } |
| |
| static int compare_sct_printout(SCT *sct, |
| const char *expected_output) |
| { |
| BIO *text_buffer = NULL; |
| char *actual_output = NULL; |
| int result = 1; |
| |
| text_buffer = BIO_new(BIO_s_mem()); |
| if (text_buffer == NULL) { |
| fprintf(stderr, "Unable to allocate buffer\n"); |
| goto end; |
| } |
| |
| SCT_print(sct, text_buffer, 0, NULL); |
| |
| /* Append null terminator because we're about to use the buffer contents |
| * as a string. */ |
| if (BIO_write(text_buffer, "\0", 1) != 1) { |
| fprintf(stderr, "Failed to append null terminator to SCT text\n"); |
| goto end; |
| } |
| |
| BIO_get_mem_data(text_buffer, &actual_output); |
| result = strcmp(actual_output, expected_output); |
| |
| if (result != 0) { |
| fprintf(stderr, |
| "Expected SCT printout:\n%s\nActual SCT printout:\n%s\n", |
| expected_output, actual_output); |
| } |
| |
| end: |
| BIO_free(text_buffer); |
| return result; |
| } |
| |
| static int compare_extension_printout(X509_EXTENSION *extension, |
| const char *expected_output) |
| { |
| BIO *text_buffer = NULL; |
| char *actual_output = NULL; |
| int result = 1; |
| |
| text_buffer = BIO_new(BIO_s_mem()); |
| if (text_buffer == NULL) { |
| fprintf(stderr, "Unable to allocate buffer\n"); |
| goto end; |
| } |
| |
| if (!X509V3_EXT_print(text_buffer, extension, X509V3_EXT_DEFAULT, 0)) { |
| fprintf(stderr, "Failed to print extension\n"); |
| goto end; |
| } |
| |
| /* Append null terminator because we're about to use the buffer contents |
| * as a string. */ |
| if (BIO_write(text_buffer, "\0", 1) != 1) { |
| fprintf(stderr, "Failed to append null terminator to extension text\n"); |
| goto end; |
| } |
| |
| BIO_get_mem_data(text_buffer, &actual_output); |
| result = strcmp(actual_output, expected_output); |
| |
| if (result != 0) { |
| fprintf(stderr, |
| "Expected SCT printout:\n%s\nActual SCT printout:\n%s\n", |
| expected_output, actual_output); |
| } |
| |
| end: |
| BIO_free(text_buffer); |
| return result; |
| } |
| |
| static int execute_cert_test(CT_TEST_FIXTURE fixture) |
| { |
| int success = 0; |
| X509 *cert = NULL, *issuer = NULL; |
| STACK_OF(SCT) *scts = NULL; |
| SCT *sct = NULL; |
| char expected_sct_text[CT_TEST_MAX_FILE_SIZE]; |
| int sct_text_len = 0; |
| unsigned char *tls_sct = NULL; |
| size_t tls_sct_len = 0; |
| CT_POLICY_EVAL_CTX *ct_policy_ctx = CT_POLICY_EVAL_CTX_new(); |
| |
| if (fixture.sct_text_file != NULL) { |
| sct_text_len = read_text_file(fixture.sct_dir, fixture.sct_text_file, |
| expected_sct_text, |
| CT_TEST_MAX_FILE_SIZE - 1); |
| |
| if (sct_text_len < 0) { |
| fprintf(stderr, "Test data file not found: %s\n", |
| fixture.sct_text_file); |
| goto end; |
| } |
| |
| expected_sct_text[sct_text_len] = '\0'; |
| } |
| |
| CT_POLICY_EVAL_CTX_set0_log_store(ct_policy_ctx, fixture.ctlog_store); |
| |
| if (fixture.certificate_file != NULL) { |
| int sct_extension_index; |
| X509_EXTENSION *sct_extension = NULL; |
| cert = load_pem_cert(fixture.certs_dir, fixture.certificate_file); |
| |
| if (cert == NULL) { |
| fprintf(stderr, "Unable to load certificate: %s\n", |
| fixture.certificate_file); |
| goto end; |
| } |
| |
| CT_POLICY_EVAL_CTX_set0_cert(ct_policy_ctx, cert); |
| |
| if (fixture.issuer_file != NULL) { |
| issuer = load_pem_cert(fixture.certs_dir, fixture.issuer_file); |
| |
| if (issuer == NULL) { |
| fprintf(stderr, "Unable to load issuer certificate: %s\n", |
| fixture.issuer_file); |
| goto end; |
| } |
| |
| CT_POLICY_EVAL_CTX_set0_issuer(ct_policy_ctx, issuer); |
| } |
| |
| sct_extension_index = |
| X509_get_ext_by_NID(cert, NID_ct_precert_scts, -1); |
| sct_extension = X509_get_ext(cert, sct_extension_index); |
| if (fixture.expected_sct_count > 0) { |
| if (sct_extension == NULL) { |
| fprintf(stderr, "SCT extension not found in: %s\n", |
| fixture.certificate_file); |
| goto end; |
| } |
| |
| if (fixture.sct_text_file |
| && compare_extension_printout(sct_extension, |
| expected_sct_text)) { |
| goto end; |
| } |
| |
| if (fixture.test_validity) { |
| int are_scts_validated = 0; |
| int i; |
| |
| scts = X509V3_EXT_d2i(sct_extension); |
| for (i = 0; i < sk_SCT_num(scts); ++i) { |
| SCT *sct_i = sk_SCT_value(scts, i); |
| |
| if (!SCT_set_source(sct_i, SCT_SOURCE_X509V3_EXTENSION)) { |
| fprintf(stderr, |
| "Error setting SCT source to X509v3 extension\n"); |
| goto end; |
| } |
| } |
| |
| are_scts_validated = SCT_LIST_validate(scts, ct_policy_ctx); |
| if (are_scts_validated < 0) { |
| fprintf(stderr, "Error verifying SCTs\n"); |
| goto end; |
| } else if (!are_scts_validated) { |
| int invalid_sct_count = 0; |
| int valid_sct_count = 0; |
| |
| for (i = 0; i < sk_SCT_num(scts); ++i) { |
| SCT *sct_i = sk_SCT_value(scts, i); |
| switch (SCT_get_validation_status(sct_i)) { |
| case SCT_VALIDATION_STATUS_VALID: |
| ++valid_sct_count; |
| break; |
| case SCT_VALIDATION_STATUS_INVALID: |
| ++invalid_sct_count; |
| break; |
| default: |
| /* Ignore other validation statuses. */ |
| break; |
| } |
| } |
| |
| if (valid_sct_count != fixture.expected_sct_count) { |
| int unverified_sct_count = sk_SCT_num(scts) - |
| invalid_sct_count - valid_sct_count; |
| |
| fprintf(stderr, |
| "%d SCTs failed verification\n" |
| "%d SCTs passed verification (%d expected)\n" |
| "%d SCTs were unverified\n", |
| invalid_sct_count, |
| valid_sct_count, |
| fixture.expected_sct_count, |
| unverified_sct_count); |
| } |
| goto end; |
| } |
| } |
| } else if (sct_extension != NULL) { |
| fprintf(stderr, |
| "Expected no SCTs, but found SCT extension in: %s\n", |
| fixture.certificate_file); |
| goto end; |
| } |
| } |
| |
| if (fixture.tls_sct != NULL) { |
| const unsigned char *p = fixture.tls_sct; |
| if (o2i_SCT(&sct, &p, fixture.tls_sct_len) == NULL) { |
| fprintf(stderr, "Failed to decode SCT from TLS format\n"); |
| goto end; |
| } |
| |
| if (fixture.test_validity && cert != NULL) { |
| int is_sct_validated = SCT_validate(sct, ct_policy_ctx); |
| if (is_sct_validated < 0) { |
| fprintf(stderr, "Error validating SCT\n"); |
| goto end; |
| } else if (!is_sct_validated) { |
| fprintf(stderr, "SCT failed verification\n"); |
| goto end; |
| } |
| } |
| |
| if (fixture.sct_text_file |
| && compare_sct_printout(sct, expected_sct_text)) { |
| goto end; |
| } |
| |
| tls_sct_len = i2o_SCT(sct, &tls_sct); |
| if (tls_sct_len != fixture.tls_sct_len || |
| memcmp(fixture.tls_sct, tls_sct, tls_sct_len) != 0) { |
| fprintf(stderr, "Failed to encode SCT into TLS format correctly\n"); |
| goto end; |
| } |
| } |
| success = 1; |
| |
| end: |
| X509_free(cert); |
| X509_free(issuer); |
| SCT_LIST_free(scts); |
| SCT_free(sct); |
| CT_POLICY_EVAL_CTX_free(ct_policy_ctx); |
| OPENSSL_free(tls_sct); |
| return success; |
| } |
| |
| #define SETUP_CT_TEST_FIXTURE() SETUP_TEST_FIXTURE(CT_TEST_FIXTURE, set_up) |
| #define EXECUTE_CT_TEST() EXECUTE_TEST(execute_cert_test, tear_down) |
| |
| static int test_no_scts_in_certificate() |
| { |
| SETUP_CT_TEST_FIXTURE(); |
| fixture.certs_dir = certs_dir; |
| fixture.certificate_file = "leaf.pem"; |
| fixture.issuer_file = "subinterCA.pem"; |
| fixture.expected_sct_count = 0; |
| EXECUTE_CT_TEST(); |
| } |
| |
| static int test_one_sct_in_certificate() |
| { |
| SETUP_CT_TEST_FIXTURE(); |
| fixture.certs_dir = certs_dir; |
| fixture.certificate_file = "embeddedSCTs1.pem"; |
| fixture.issuer_file = "embeddedSCTs1_issuer.pem"; |
| fixture.expected_sct_count = 1; |
| fixture.sct_dir = certs_dir; |
| fixture.sct_text_file = "embeddedSCTs1.sct"; |
| EXECUTE_CT_TEST(); |
| } |
| |
| static int test_multiple_scts_in_certificate() |
| { |
| SETUP_CT_TEST_FIXTURE(); |
| fixture.certs_dir = certs_dir; |
| fixture.certificate_file = "embeddedSCTs3.pem"; |
| fixture.issuer_file = "embeddedSCTs3_issuer.pem"; |
| fixture.expected_sct_count = 3; |
| fixture.sct_dir = certs_dir; |
| fixture.sct_text_file = "embeddedSCTs3.sct"; |
| EXECUTE_CT_TEST(); |
| } |
| |
| static int test_verify_one_sct() |
| { |
| SETUP_CT_TEST_FIXTURE(); |
| fixture.certs_dir = certs_dir; |
| fixture.certificate_file = "embeddedSCTs1.pem"; |
| fixture.issuer_file = "embeddedSCTs1_issuer.pem"; |
| fixture.expected_sct_count = 1; |
| fixture.test_validity = 1; |
| EXECUTE_CT_TEST(); |
| } |
| |
| static int test_verify_multiple_scts() |
| { |
| SETUP_CT_TEST_FIXTURE(); |
| fixture.certs_dir = certs_dir; |
| fixture.certificate_file = "embeddedSCTs3.pem"; |
| fixture.issuer_file = "embeddedSCTs3_issuer.pem"; |
| fixture.expected_sct_count = 3; |
| fixture.test_validity = 1; |
| EXECUTE_CT_TEST(); |
| } |
| |
| static int test_decode_tls_sct() |
| { |
| const unsigned char tls_sct[] = "\x00" /* version */ |
| /* log ID */ |
| "\xDF\x1C\x2E\xC1\x15\x00\x94\x52\x47\xA9\x61\x68\x32\x5D\xDC\x5C\x79" |
| "\x59\xE8\xF7\xC6\xD3\x88\xFC\x00\x2E\x0B\xBD\x3F\x74\xD7\x64" |
| "\x00\x00\x01\x3D\xDB\x27\xDF\x93" /* timestamp */ |
| "\x00\x00" /* extensions length */ |
| "" /* extensions */ |
| "\x04\x03" /* hash and signature algorithms */ |
| "\x00\x47" /* signature length */ |
| /* signature */ |
| "\x30\x45\x02\x20\x48\x2F\x67\x51\xAF\x35\xDB\xA6\x54\x36\xBE\x1F\xD6" |
| "\x64\x0F\x3D\xBF\x9A\x41\x42\x94\x95\x92\x45\x30\x28\x8F\xA3\xE5\xE2" |
| "\x3E\x06\x02\x21\x00\xE4\xED\xC0\xDB\x3A\xC5\x72\xB1\xE2\xF5\xE8\xAB" |
| "\x6A\x68\x06\x53\x98\x7D\xCF\x41\x02\x7D\xFE\xFF\xA1\x05\x51\x9D\x89" |
| "\xED\xBF\x08"; |
| |
| SETUP_CT_TEST_FIXTURE(); |
| fixture.tls_sct = tls_sct; |
| fixture.tls_sct_len = 118; |
| fixture.sct_dir = ct_dir; |
| fixture.sct_text_file = "tls1.sct"; |
| EXECUTE_CT_TEST(); |
| } |
| |
| static int test_encode_tls_sct() |
| { |
| const unsigned char log_id[] = "\xDF\x1C\x2E\xC1\x15\x00\x94\x52\x47\xA9" |
| "\x61\x68\x32\x5D\xDC\x5C\x79\x59\xE8\xF7\xC6\xD3\x88\xFC\x00\x2E" |
| "\x0B\xBD\x3F\x74\xD7\x64"; |
| |
| const unsigned char signature[] = "\x45\x02\x20\x48\x2F\x67\x51\xAF\x35" |
| "\xDB\xA6\x54\x36\xBE\x1F\xD6\x64\x0F\x3D\xBF\x9A\x41\x42\x94\x95" |
| "\x92\x45\x30\x28\x8F\xA3\xE5\xE2\x3E\x06\x02\x21\x00\xE4\xED\xC0" |
| "\xDB\x3A\xC5\x72\xB1\xE2\xF5\xE8\xAB\x6A\x68\x06\x53\x98\x7D\xCF" |
| "\x41\x02\x7D\xFE\xFF\xA1\x05\x51\x9D\x89\xED\xBF\x08"; |
| |
| SETUP_CT_TEST_FIXTURE(); |
| |
| SCT *sct = SCT_new(); |
| if (!SCT_set_version(sct, SCT_VERSION_V1)) { |
| fprintf(stderr, "Failed to set SCT version\n"); |
| return 1; |
| } |
| if (!SCT_set1_log_id(sct, log_id, 32)) { |
| fprintf(stderr, "Failed to set SCT log ID\n"); |
| return 1; |
| } |
| SCT_set_timestamp(sct, 1); |
| if (!SCT_set_signature_nid(sct, NID_ecdsa_with_SHA256)) { |
| fprintf(stderr, "Failed to set SCT signature NID\n"); |
| return 1; |
| } |
| if (!SCT_set1_signature(sct, signature, 71)) { |
| fprintf(stderr, "Failed to set SCT signature\n"); |
| return 1; |
| } |
| fixture.sct = sct; |
| fixture.sct_dir = ct_dir; |
| fixture.sct_text_file = "tls1.sct"; |
| EXECUTE_CT_TEST(); |
| } |
| |
| int main(int argc, char *argv[]) |
| { |
| int result = 0; |
| char *tmp_env = NULL; |
| |
| tmp_env = getenv("OPENSSL_DEBUG_MEMORY"); |
| if (tmp_env != NULL && strcmp(tmp_env, "on") == 0) |
| CRYPTO_set_mem_debug(1); |
| CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON); |
| |
| tmp_env = getenv("CT_DIR"); |
| ct_dir = OPENSSL_strdup(tmp_env != NULL ? tmp_env : "ct"); |
| tmp_env = getenv("CERTS_DIR"); |
| certs_dir = OPENSSL_strdup(tmp_env != NULL ? tmp_env : "certs"); |
| |
| ADD_TEST(test_no_scts_in_certificate); |
| ADD_TEST(test_one_sct_in_certificate); |
| ADD_TEST(test_multiple_scts_in_certificate); |
| ADD_TEST(test_verify_one_sct); |
| ADD_TEST(test_verify_multiple_scts); |
| ADD_TEST(test_decode_tls_sct); |
| ADD_TEST(test_encode_tls_sct); |
| |
| result = run_tests(argv[0]); |
| ERR_print_errors_fp(stderr); |
| |
| OPENSSL_free(ct_dir); |
| OPENSSL_free(certs_dir); |
| |
| #ifndef OPENSSL_NO_CRYPTO_MDEBUG |
| if (CRYPTO_mem_leaks_fp(stderr) <= 0) |
| result = 1; |
| #endif |
| |
| return result; |
| } |
| |
| #else /* OPENSSL_NO_CT */ |
| |
| int main(int argc, char* argv[]) |
| { |
| return EXIT_SUCCESS; |
| } |
| |
| #endif /* OPENSSL_NO_CT */ |
