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openssl/test/danetest.c
Pauli ad887416f1 Update the test framework so that the need for test_main is removed. Everything 
that needed test_main now works using the same infrastructure as tests that used
register_tests.

This meant:
* renaming register_tests to setup_tests and giving it a success/failure return.
* renaming the init_test function to setup_test_framework.
* renaming the finish_test function to pulldown_test_framework.
* adding a user provided global_init function that runs before the test frame
    work is initialised.  It returns a failure indication that stops the stest.
* adding helper functions that permit tests to access their command line args.
* spliting the BIO initialisation and finalisation out from the test setup and
    teardown.
* hiding some of the now test internal functions.
* fix the comments in testutil.h

Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3953)
2017-07-27 07:53:08 +10:00

430 lines
11 KiB
C
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/*
* Copyright 2015-2017 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 <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 "e_os.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;
X509 *cert = 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_ptr(cert = sk_X509_value(chain, 0))
|| !TEST_true(X509_STORE_CTX_init(store_ctx, store, cert, 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_verify_cert(store_ctx), 0))
ret = 0;
SSL_set_verify_result(ssl, X509_STORE_CTX_get_error(store_ctx));
X509_STORE_CTX_cleanup(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);
sk_X509_pop_free(chain, X509_free);
return NULL;
}
static char *read_to_eol(BIO *f)
{
static char buf[1024];
int n;
if (!BIO_gets(f, buf, sizeof(buf)))
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);
sk_X509_pop_free(chain, X509_free);
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()
{
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_locations(ctx, CAfile, NULL))
|| !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;
}
int setup_tests(void)
{
if (!TEST_ptr(basedomain = test_get_argument(0))
|| !TEST_ptr(CAfile = test_get_argument(1))
|| !TEST_ptr(tlsafile = test_get_argument(2))) {
TEST_error("Usage error: danetest basedomain CAfile tlsafile");
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));
}
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