1 /* ====================================================================
2 * Copyright (c) 2015 The OpenSSL Project. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in
13 * the documentation and/or other materials provided with the
16 * 3. All advertising materials mentioning features or use of this
17 * software must display the following acknowledgment:
18 * "This product includes software developed by the OpenSSL Project
19 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
21 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
22 * endorse or promote products derived from this software without
23 * prior written permission. For written permission, please contact
24 * openssl-core@openssl.org.
26 * 5. Products derived from this software may not be called "OpenSSL"
27 * nor may "OpenSSL" appear in their names without prior written
28 * permission of the OpenSSL Project.
30 * 6. Redistributions of any form whatsoever must retain the following
32 * "This product includes software developed by the OpenSSL Project
33 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
35 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
36 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
37 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
38 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
39 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
40 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
41 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
42 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
43 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
44 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
45 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
46 * OF THE POSSIBILITY OF SUCH DAMAGE.
47 * ====================================================================
56 #include <openssl/crypto.h>
57 #include <openssl/evp.h>
58 #include <openssl/x509.h>
59 #include <openssl/ssl.h>
60 #include <openssl/err.h>
61 #include <openssl/conf.h>
62 #ifndef OPENSSL_NO_ENGINE
63 #include <openssl/engine.h>
68 #define _UC(c) ((unsigned char)(c))
70 static const char *progname;
73 * Forward declaration, of function that uses internal interfaces, from headers
74 * included at the end of this module.
76 static void store_ctx_dane_init(X509_STORE_CTX *, SSL *);
78 static int saved_errno;
80 static void save_errno(void)
85 static int restore_errno(void)
92 static void test_usage(void)
94 fprintf(stderr, "usage: %s: danetest basedomain CAfile tlsafile\n", progname);
97 static void print_errors(void)
106 while ((err = ERR_get_error_line_data(&file, &line, &data, &flags)) != 0) {
107 ERR_error_string_n(err, buffer, sizeof(buffer));
108 if (flags & ERR_TXT_STRING)
109 fprintf(stderr, "Error: %s:%s:%d:%s\n", buffer, file, line, data);
111 fprintf(stderr, "Error: %s:%s:%d\n", buffer, file, line);
115 static int verify_chain(SSL *ssl, STACK_OF(X509) *chain)
118 X509_STORE_CTX *store_ctx;
119 SSL_CTX *ssl_ctx = SSL_get_SSL_CTX(ssl);
120 X509_STORE *store = SSL_CTX_get_cert_store(ssl_ctx);
121 int store_ctx_idx = SSL_get_ex_data_X509_STORE_CTX_idx();
122 X509 *cert = sk_X509_value(chain, 0);
124 if ((store_ctx = X509_STORE_CTX_new()) == NULL)
127 if (!X509_STORE_CTX_init(store_ctx, store, cert, chain))
129 X509_STORE_CTX_set_ex_data(store_ctx, store_ctx_idx, ssl);
131 X509_STORE_CTX_set_default(store_ctx,
132 SSL_is_server(ssl) ? "ssl_client" : "ssl_server");
133 X509_VERIFY_PARAM_set1(X509_STORE_CTX_get0_param(store_ctx),
134 SSL_get0_param(ssl));
135 store_ctx_dane_init(store_ctx, ssl);
137 if (SSL_get_verify_callback(ssl))
138 X509_STORE_CTX_set_verify_cb(store_ctx, SSL_get_verify_callback(ssl));
140 ret = X509_verify_cert(store_ctx);
142 SSL_set_verify_result(ssl, X509_STORE_CTX_get_error(store_ctx));
143 X509_STORE_CTX_cleanup(store_ctx);
144 X509_STORE_CTX_free(store_ctx);
149 static STACK_OF(X509) *load_chain(FILE *fp, int nelem)
154 unsigned char *data = 0;
156 char *errtype = 0; /* if error: cert or pkey? */
157 STACK_OF(X509) *chain;
158 typedef X509 *(*d2i_X509_t)(X509 **, const unsigned char **, long);
160 if ((chain = sk_X509_new_null()) == 0) {
166 count < nelem && errtype == 0
167 && PEM_read(fp, &name, &header, &data, &len);
169 const unsigned char *p = data;
171 if (strcmp(name, PEM_STRING_X509) == 0
172 || strcmp(name, PEM_STRING_X509_TRUSTED) == 0
173 || strcmp(name, PEM_STRING_X509_OLD) == 0) {
174 d2i_X509_t d = strcmp(name, PEM_STRING_X509_TRUSTED) ?
175 d2i_X509_AUX : d2i_X509;
176 X509 *cert = d(0, &p, len);
178 if (cert == 0 || (p - data) != len)
179 errtype = "certificate";
180 else if (sk_X509_push(chain, cert) == 0) {
185 fprintf(stderr, "unexpected chain file object: %s\n", name);
190 * If any of these were null, PEM_read() would have failed.
193 OPENSSL_free(header);
198 fprintf(stderr, "error reading: malformed %s\n", errtype);
202 if (count == nelem) {
208 /* Some other PEM read error */
209 sk_X509_pop_free(chain, X509_free);
214 static char *read_to_eol(FILE *f)
216 static char buf[1024];
219 if (fgets(buf, sizeof(buf), f)== NULL)
224 if (buf[n-1] != '\n') {
225 if (n+1 == sizeof(buf)) {
226 fprintf(stderr, "%s: warning: input too long\n", progname);
228 fprintf(stderr, "%s: warning: EOF before newline\n", progname);
233 /* Trim trailing whitespace */
234 while (n > 0 && isspace(_UC(buf[n-1])))
241 * Hex decoder that tolerates optional whitespace
243 static ossl_ssize_t hexdecode(const char *in, void *result)
245 unsigned char **out = (unsigned char **)result;
246 unsigned char *ret = OPENSSL_malloc(strlen(in)/2);
247 unsigned char *cp = ret;
254 for (byte = 0; *in; ++in) {
257 if (isspace(_UC(*in)))
259 c = tolower(_UC(*in));
260 if ('0' <= c && c <= '9') {
262 } else if ('a' <= c && c <= 'f') {
263 byte |= c - 'a' + 10;
268 if ((nibble ^= 1) == 0) {
280 return cp - (*out = ret);
283 static ossl_ssize_t checked_uint8(const char *in, void *out)
285 uint8_t *result = (uint8_t *)out;
292 v = strtol(cp, &endp, 10);
295 if (((v == LONG_MIN || v == LONG_MAX) && e == ERANGE) ||
296 endp == cp || !isspace(_UC(*endp)) ||
297 v != (*(uint8_t *)result = (uint8_t) v)) {
300 for (cp = endp; isspace(_UC(*cp)); ++cp)
308 ossl_ssize_t (*parser)(const char *, void *);
311 static int tlsa_import_rr(SSL *ssl, const char *rrdata)
313 static uint8_t usage;
314 static uint8_t selector;
315 static uint8_t mtype;
316 static unsigned char *data = NULL;
317 static struct tlsa_field tlsa_fields[] = {
318 { &usage, "usage", checked_uint8 },
319 { &selector, "selector", checked_uint8 },
320 { &mtype, "mtype", checked_uint8 },
321 { &data, "data", hexdecode },
325 struct tlsa_field *f;
326 const char *cp = rrdata;
327 ossl_ssize_t len = 0;
329 for (f = tlsa_fields; f->var; ++f) {
330 if ((len = f->parser(cp += len, f->var)) <= 0) {
331 fprintf(stderr, "%s: warning: bad TLSA %s field in: %s\n",
332 progname, f->name, rrdata);
336 ret = SSL_dane_tlsa_add(ssl, usage, selector, mtype, data, len);
341 fprintf(stderr, "%s: warning: unusable TLSA rrdata: %s\n",
346 fprintf(stderr, "%s: warning: error loading TLSA rrdata: %s\n",
353 static int allws(const char *cp)
356 if (!isspace(_UC(*cp++)))
361 static int test_tlsafile(SSL_CTX *ctx, const char *basename,
362 FILE *f, const char *path)
369 while (ret > 0 && (line = read_to_eol(f)) != NULL) {
370 STACK_OF(X509) *chain;
381 if (*line == '\0' || *line == '#')
385 if (sscanf(line, "%d %d %d %d%n", &ntlsa, &ncert, &want, &want_depth, &off) != 4
386 || !allws(line + off)) {
387 fprintf(stderr, "Expected tlsa count, cert count and result"
388 " at test %d of %s\n", testno, path);
392 if ((ssl = SSL_new(ctx)) == NULL)
394 SSL_set_connect_state(ssl);
395 if (SSL_dane_enable(ssl, basename) <= 0) {
400 for (i = 0; i < ntlsa; ++i) {
401 if ((line = read_to_eol(f)) == NULL || !tlsa_import_rr(ssl, line)) {
407 /* Don't report old news */
409 chain = load_chain(f, ncert);
415 ok = verify_chain(ssl, chain);
416 sk_X509_pop_free(chain, X509_free);
417 err = SSL_get_verify_result(ssl);
419 * Peek under the hood, normally TLSA match data is hidden when
420 * verification fails, we can obtain any suppressed data by setting the
421 * verification result to X509_V_OK before looking.
423 SSL_set_verify_result(ssl, X509_V_OK);
424 mdpth = SSL_get0_dane_authority(ssl, NULL, NULL);
425 /* Not needed any more, but lead by example and put the error back. */
426 SSL_set_verify_result(ssl, err);
431 fprintf(stderr, "verify_chain internal error in %s test %d\n",
436 if (err != want || (want == 0 && !ok)) {
439 if (want == X509_V_OK)
440 fprintf(stderr, "Verification failure in %s test %d: %d: %s\n",
441 path, testno, err, X509_verify_cert_error_string(err));
443 fprintf(stderr, "Unexpected error in %s test %d: %d: wanted %d\n",
444 path, testno, err, want);
446 fprintf(stderr, "Verification failure in %s test %d: ok=0\n",
452 if (mdpth != want_depth) {
454 fprintf(stderr, "Wrong match depth, in %s test %d: wanted %d, got: %d\n",
455 path, testno, want_depth, mdpth);
457 fprintf(stderr, "%s: test %d successful\n", path, testno);
464 int main(int argc, char *argv[])
469 const char *basedomain;
471 const char *tlsafile;
480 basedomain = argv[1];
484 bio_err = BIO_new_fp(stderr, BIO_NOCLOSE | BIO_FP_TEXT);
486 p = getenv("OPENSSL_DEBUG_MEMORY");
487 if (p != NULL && strcmp(p, "on") == 0)
488 CRYPTO_set_mem_debug(1);
489 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON);
491 f = fopen(tlsafile, "r");
493 fprintf(stderr, "%s: Error opening tlsa record file: '%s': %s\n",
494 progname, tlsafile, strerror(errno));
499 ctx = SSL_CTX_new(TLS_client_method());
500 if (SSL_CTX_dane_enable(ctx) <= 0) {
504 if (!SSL_CTX_load_verify_locations(ctx, CAfile, NULL)) {
508 if ((SSL_CTX_dane_mtype_set(ctx, EVP_sha512(), 2, 1)) <= 0) {
512 if ((SSL_CTX_dane_mtype_set(ctx, EVP_sha256(), 1, 2)) <= 0) {
517 if (test_tlsafile(ctx, basedomain, f, tlsafile) <= 0) {
529 #ifndef OPENSSL_NO_CRYPTO_MDEBUG
530 if (CRYPTO_mem_leaks(bio_err) <= 0)
537 #include <internal/dane.h>
539 static void store_ctx_dane_init(X509_STORE_CTX *store_ctx, SSL *ssl)
541 X509_STORE_CTX_set0_dane(store_ctx, SSL_get0_dane(ssl));