| /* |
| * Copyright 2015-2021 The OpenSSL Project Authors. All Rights Reserved. |
| * |
| * Licensed under the Apache License 2.0 (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 <stdio.h> |
| #include <string.h> |
| #include <ctype.h> |
| #include <limits.h> |
| #include <errno.h> |
| |
| #include <openssl/crypto.h> |
| #include <openssl/evp.h> |
| #include <openssl/x509.h> |
| #include <openssl/ssl.h> |
| #include <openssl/err.h> |
| #include <openssl/conf.h> |
| #ifndef OPENSSL_NO_ENGINE |
| # include <openssl/engine.h> |
| #endif |
| #include "testutil.h" |
| |
| #include "internal/nelem.h" |
| |
| #define _UC(c) ((unsigned char)(c)) |
| |
| static const char *basedomain; |
| static const char *CAfile; |
| static const char *tlsafile; |
| |
| /* |
| * Forward declaration, of function that uses internal interfaces, from headers |
| * included at the end of this module. |
| */ |
| static void store_ctx_dane_init(X509_STORE_CTX *, SSL *); |
| |
| static int saved_errno; |
| |
| static void save_errno(void) |
| { |
| saved_errno = errno; |
| } |
| |
| static int restore_errno(void) |
| { |
| int ret = errno; |
| errno = saved_errno; |
| return ret; |
| } |
| |
| static int verify_chain(SSL *ssl, STACK_OF(X509) *chain) |
| { |
| X509_STORE_CTX *store_ctx = NULL; |
| SSL_CTX *ssl_ctx = NULL; |
| X509_STORE *store = NULL; |
| int ret = 0; |
| int store_ctx_idx = SSL_get_ex_data_X509_STORE_CTX_idx(); |
| |
| if (!TEST_ptr(store_ctx = X509_STORE_CTX_new()) |
| || !TEST_ptr(ssl_ctx = SSL_get_SSL_CTX(ssl)) |
| || !TEST_ptr(store = SSL_CTX_get_cert_store(ssl_ctx)) |
| || !TEST_true(X509_STORE_CTX_init(store_ctx, store, NULL, chain)) |
| || !TEST_true(X509_STORE_CTX_set_ex_data(store_ctx, store_ctx_idx, |
| ssl))) |
| goto end; |
| |
| X509_STORE_CTX_set_default(store_ctx, SSL_is_server(ssl) |
| ? "ssl_client" : "ssl_server"); |
| X509_VERIFY_PARAM_set1(X509_STORE_CTX_get0_param(store_ctx), |
| SSL_get0_param(ssl)); |
| store_ctx_dane_init(store_ctx, ssl); |
| |
| if (SSL_get_verify_callback(ssl) != NULL) |
| X509_STORE_CTX_set_verify_cb(store_ctx, SSL_get_verify_callback(ssl)); |
| |
| /* Mask "internal failures" (-1) from our return value. */ |
| if (!TEST_int_ge(ret = X509_STORE_CTX_verify(store_ctx), 0)) |
| ret = 0; |
| |
| SSL_set_verify_result(ssl, X509_STORE_CTX_get_error(store_ctx)); |
| |
| end: |
| X509_STORE_CTX_free(store_ctx); |
| return ret; |
| } |
| |
| static STACK_OF(X509) *load_chain(BIO *fp, int nelem) |
| { |
| int count; |
| char *name = 0; |
| char *header = 0; |
| unsigned char *data = 0; |
| long len; |
| char *errtype = 0; /* if error: cert or pkey? */ |
| STACK_OF(X509) *chain; |
| typedef X509 *(*d2i_X509_t)(X509 **, const unsigned char **, long); |
| |
| if (!TEST_ptr(chain = sk_X509_new_null())) |
| goto err; |
| |
| for (count = 0; |
| count < nelem && errtype == 0 |
| && PEM_read_bio(fp, &name, &header, &data, &len) == 1; |
| ++count) { |
| if (strcmp(name, PEM_STRING_X509) == 0 |
| || strcmp(name, PEM_STRING_X509_TRUSTED) == 0 |
| || strcmp(name, PEM_STRING_X509_OLD) == 0) { |
| d2i_X509_t d = strcmp(name, PEM_STRING_X509_TRUSTED) != 0 |
| ? d2i_X509_AUX : d2i_X509; |
| X509 *cert; |
| const unsigned char *p = data; |
| |
| if (!TEST_ptr(cert = d(0, &p, len)) |
| || !TEST_long_eq(p - data, len)) { |
| TEST_info("Certificate parsing error"); |
| goto err; |
| } |
| |
| if (!TEST_true(sk_X509_push(chain, cert))) |
| goto err; |
| } else { |
| TEST_info("Unknown chain file object %s", name); |
| goto err; |
| } |
| |
| OPENSSL_free(name); |
| OPENSSL_free(header); |
| OPENSSL_free(data); |
| name = header = NULL; |
| data = NULL; |
| } |
| |
| if (count == nelem) { |
| ERR_clear_error(); |
| return chain; |
| } |
| |
| err: |
| OPENSSL_free(name); |
| OPENSSL_free(header); |
| OPENSSL_free(data); |
| OSSL_STACK_OF_X509_free(chain); |
| return NULL; |
| } |
| |
| static char *read_to_eol(BIO *f) |
| { |
| static char buf[4096]; |
| int n; |
| |
| if (BIO_gets(f, buf, sizeof(buf)) <= 0) |
| return NULL; |
| |
| n = strlen(buf); |
| if (buf[n - 1] != '\n') { |
| if (n + 1 == sizeof(buf)) |
| TEST_error("input too long"); |
| else |
| TEST_error("EOF before newline"); |
| return NULL; |
| } |
| |
| /* Trim trailing whitespace */ |
| while (n > 0 && isspace(_UC(buf[n - 1]))) |
| buf[--n] = '\0'; |
| |
| return buf; |
| } |
| |
| /* |
| * Hex decoder that tolerates optional whitespace |
| */ |
| static ossl_ssize_t hexdecode(const char *in, void *result) |
| { |
| unsigned char **out = (unsigned char **)result; |
| unsigned char *ret; |
| unsigned char *cp; |
| uint8_t byte; |
| int nibble = 0; |
| |
| if (!TEST_ptr(ret = OPENSSL_malloc(strlen(in) / 2))) |
| return -1; |
| cp = ret; |
| |
| for (byte = 0; *in; ++in) { |
| int x; |
| |
| if (isspace(_UC(*in))) |
| continue; |
| x = OPENSSL_hexchar2int(*in); |
| if (x < 0) { |
| OPENSSL_free(ret); |
| return 0; |
| } |
| byte |= (char)x; |
| if ((nibble ^= 1) == 0) { |
| *cp++ = byte; |
| byte = 0; |
| } else { |
| byte <<= 4; |
| } |
| } |
| if (nibble != 0) { |
| OPENSSL_free(ret); |
| return 0; |
| } |
| |
| return cp - (*out = ret); |
| } |
| |
| static ossl_ssize_t checked_uint8(const char *in, void *out) |
| { |
| uint8_t *result = (uint8_t *)out; |
| const char *cp = in; |
| char *endp; |
| long v; |
| int e; |
| |
| save_errno(); |
| v = strtol(cp, &endp, 10); |
| e = restore_errno(); |
| |
| if (((v == LONG_MIN || v == LONG_MAX) && e == ERANGE) || |
| endp == cp || !isspace(_UC(*endp)) || |
| v != (*(uint8_t *)result = (uint8_t) v)) { |
| return -1; |
| } |
| for (cp = endp; isspace(_UC(*cp)); ++cp) |
| continue; |
| return cp - in; |
| } |
| |
| struct tlsa_field { |
| void *var; |
| const char *name; |
| ossl_ssize_t (*parser)(const char *, void *); |
| }; |
| |
| static int tlsa_import_rr(SSL *ssl, const char *rrdata) |
| { |
| static uint8_t usage; |
| static uint8_t selector; |
| static uint8_t mtype; |
| static unsigned char *data = NULL; |
| static struct tlsa_field tlsa_fields[] = { |
| { &usage, "usage", checked_uint8 }, |
| { &selector, "selector", checked_uint8 }, |
| { &mtype, "mtype", checked_uint8 }, |
| { &data, "data", hexdecode }, |
| { NULL, } |
| }; |
| int ret; |
| struct tlsa_field *f; |
| const char *cp = rrdata; |
| ossl_ssize_t len = 0; |
| |
| for (f = tlsa_fields; f->var; ++f) { |
| if ((len = f->parser(cp += len, f->var)) <= 0) { |
| TEST_info("bad TLSA %s field in: %s", f->name, rrdata); |
| return 0; |
| } |
| } |
| |
| ret = SSL_dane_tlsa_add(ssl, usage, selector, mtype, data, len); |
| OPENSSL_free(data); |
| if (ret == 0) { |
| TEST_info("unusable TLSA rrdata: %s", rrdata); |
| return 0; |
| } |
| if (ret < 0) { |
| TEST_info("error loading TLSA rrdata: %s", rrdata); |
| return 0; |
| } |
| |
| return ret; |
| } |
| |
| static int allws(const char *cp) |
| { |
| while (*cp) |
| if (!isspace(_UC(*cp++))) |
| return 0; |
| return 1; |
| } |
| |
| static int test_tlsafile(SSL_CTX *ctx, const char *base_name, |
| BIO *f, const char *path) |
| { |
| char *line; |
| int testno = 0; |
| int ret = 1; |
| SSL *ssl; |
| |
| while (ret > 0 && (line = read_to_eol(f)) != NULL) { |
| STACK_OF(X509) *chain; |
| int ntlsa; |
| int ncert; |
| int noncheck; |
| int want; |
| int want_depth; |
| int off; |
| int i; |
| int ok; |
| int err; |
| int mdpth; |
| |
| if (*line == '\0' || *line == '#') |
| continue; |
| |
| ++testno; |
| if (sscanf(line, "%d %d %d %d %d%n", |
| &ntlsa, &ncert, &noncheck, &want, &want_depth, &off) != 5 |
| || !allws(line + off)) { |
| TEST_error("Malformed line for test %d", testno); |
| return 0; |
| } |
| |
| if (!TEST_ptr(ssl = SSL_new(ctx))) |
| return 0; |
| SSL_set_connect_state(ssl); |
| if (SSL_dane_enable(ssl, base_name) <= 0) { |
| SSL_free(ssl); |
| return 0; |
| } |
| if (noncheck) |
| SSL_dane_set_flags(ssl, DANE_FLAG_NO_DANE_EE_NAMECHECKS); |
| |
| for (i = 0; i < ntlsa; ++i) { |
| if ((line = read_to_eol(f)) == NULL || !tlsa_import_rr(ssl, line)) { |
| SSL_free(ssl); |
| return 0; |
| } |
| } |
| |
| /* Don't report old news */ |
| ERR_clear_error(); |
| if (!TEST_ptr(chain = load_chain(f, ncert))) { |
| SSL_free(ssl); |
| return 0; |
| } |
| |
| ok = verify_chain(ssl, chain); |
| OSSL_STACK_OF_X509_free(chain); |
| err = SSL_get_verify_result(ssl); |
| /* |
| * Peek under the hood, normally TLSA match data is hidden when |
| * verification fails, we can obtain any suppressed data by setting the |
| * verification result to X509_V_OK before looking. |
| */ |
| SSL_set_verify_result(ssl, X509_V_OK); |
| mdpth = SSL_get0_dane_authority(ssl, NULL, NULL); |
| /* Not needed any more, but lead by example and put the error back. */ |
| SSL_set_verify_result(ssl, err); |
| SSL_free(ssl); |
| |
| if (!TEST_int_eq(err, want)) { |
| if (want == X509_V_OK) |
| TEST_info("Verification failure in test %d: %d=%s", |
| testno, err, X509_verify_cert_error_string(err)); |
| else |
| TEST_info("Unexpected error in test %d", testno); |
| ret = 0; |
| continue; |
| } |
| if (!TEST_false(want == 0 && ok == 0)) { |
| TEST_info("Verification failure in test %d: ok=0", testno); |
| ret = 0; |
| continue; |
| } |
| if (!TEST_int_eq(mdpth, want_depth)) { |
| TEST_info("In test test %d", testno); |
| ret = 0; |
| } |
| } |
| ERR_clear_error(); |
| |
| return ret; |
| } |
| |
| static int run_tlsatest(void) |
| { |
| SSL_CTX *ctx = NULL; |
| BIO *f = NULL; |
| int ret = 0; |
| |
| if (!TEST_ptr(f = BIO_new_file(tlsafile, "r")) |
| || !TEST_ptr(ctx = SSL_CTX_new(TLS_client_method())) |
| || !TEST_int_gt(SSL_CTX_dane_enable(ctx), 0) |
| || !TEST_true(SSL_CTX_load_verify_file(ctx, CAfile)) |
| || !TEST_int_gt(SSL_CTX_dane_mtype_set(ctx, EVP_sha512(), 2, 1), 0) |
| || !TEST_int_gt(SSL_CTX_dane_mtype_set(ctx, EVP_sha256(), 1, 2), 0) |
| || !TEST_int_gt(test_tlsafile(ctx, basedomain, f, tlsafile), 0)) |
| goto end; |
| ret = 1; |
| |
| end: |
| BIO_free(f); |
| SSL_CTX_free(ctx); |
| |
| return ret; |
| } |
| |
| OPT_TEST_DECLARE_USAGE("basedomain CAfile tlsafile\n") |
| |
| int setup_tests(void) |
| { |
| if (!test_skip_common_options()) { |
| TEST_error("Error parsing test options\n"); |
| return 0; |
| } |
| |
| if (!TEST_ptr(basedomain = test_get_argument(0)) |
| || !TEST_ptr(CAfile = test_get_argument(1)) |
| || !TEST_ptr(tlsafile = test_get_argument(2))) |
| return 0; |
| |
| ADD_TEST(run_tlsatest); |
| return 1; |
| } |
| |
| #include "internal/dane.h" |
| |
| static void store_ctx_dane_init(X509_STORE_CTX *store_ctx, SSL *ssl) |
| { |
| X509_STORE_CTX_set0_dane(store_ctx, SSL_get0_dane(ssl)); |
| } |