1 /* $OpenBSD: verify.c,v 1.7 2018/02/07 05:47:55 jsing Exp $ */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
65 #include <openssl/bio.h>
66 #include <openssl/err.h>
67 #include <openssl/pem.h>
68 #include <openssl/x509.h>
69 #include <openssl/x509v3.h>
71 static int cb(int ok, X509_STORE_CTX * ctx);
72 static int check(X509_STORE * ctx, char *file, STACK_OF(X509) * uchain,
73 STACK_OF(X509) * tchain, STACK_OF(X509_CRL) * crls);
74 static int v_verbose = 0, vflags = 0;
77 verify_main(int argc, char **argv)
79 int i, ret = 1, badarg = 0;
80 char *CApath = NULL, *CAfile = NULL;
81 char *untfile = NULL, *trustfile = NULL, *crlfile = NULL;
82 STACK_OF(X509) * untrusted = NULL, *trusted = NULL;
83 STACK_OF(X509_CRL) * crls = NULL;
84 X509_STORE *cert_ctx = NULL;
85 X509_LOOKUP *lookup = NULL;
86 X509_VERIFY_PARAM *vpm = NULL;
88 if (single_execution) {
89 if (pledge("stdio rpath", NULL) == -1) {
95 cert_ctx = X509_STORE_new();
98 X509_STORE_set_verify_cb(cert_ctx, cb);
104 if (strcmp(*argv, "-CApath") == 0) {
108 } else if (strcmp(*argv, "-CAfile") == 0) {
112 } else if (args_verify(&argv, &argc, &badarg, bio_err,
117 } else if (strcmp(*argv, "-untrusted") == 0) {
121 } else if (strcmp(*argv, "-trusted") == 0) {
124 trustfile = *(++argv);
125 } else if (strcmp(*argv, "-CRLfile") == 0) {
130 else if (strcmp(*argv, "-help") == 0)
132 else if (strcmp(*argv, "-verbose") == 0)
134 else if (argv[0][0] == '-')
145 X509_STORE_set1_param(cert_ctx, vpm);
147 lookup = X509_STORE_add_lookup(cert_ctx, X509_LOOKUP_file());
151 i = X509_LOOKUP_load_file(lookup, CAfile, X509_FILETYPE_PEM);
153 BIO_printf(bio_err, "Error loading file %s\n", CAfile);
154 ERR_print_errors(bio_err);
158 X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
160 lookup = X509_STORE_add_lookup(cert_ctx, X509_LOOKUP_hash_dir());
164 i = X509_LOOKUP_add_dir(lookup, CApath, X509_FILETYPE_PEM);
166 BIO_printf(bio_err, "Error loading directory %s\n", CApath);
167 ERR_print_errors(bio_err);
171 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
176 untrusted = load_certs(bio_err, untfile, FORMAT_PEM,
177 NULL, "untrusted certificates");
182 trusted = load_certs(bio_err, trustfile, FORMAT_PEM,
183 NULL, "trusted certificates");
188 crls = load_crls(bio_err, crlfile, FORMAT_PEM,
195 if (1 != check(cert_ctx, NULL, untrusted, trusted, crls))
198 for (i = 0; i < argc; i++)
199 if (1 != check(cert_ctx, argv[i], untrusted, trusted,
206 BIO_printf(bio_err, "usage: verify [-verbose] [-CApath path] [-CAfile file] [-purpose purpose] [-crl_check]");
207 BIO_printf(bio_err, " [-attime timestamp]");
208 BIO_printf(bio_err, " cert1 cert2 ...\n");
210 BIO_printf(bio_err, "recognized usages:\n");
211 for (i = 0; i < X509_PURPOSE_get_count(); i++) {
213 ptmp = X509_PURPOSE_get0(i);
214 BIO_printf(bio_err, "\t%-10s\t%s\n",
215 X509_PURPOSE_get0_sname(ptmp),
216 X509_PURPOSE_get0_name(ptmp));
220 X509_VERIFY_PARAM_free(vpm);
221 if (cert_ctx != NULL)
222 X509_STORE_free(cert_ctx);
223 sk_X509_pop_free(untrusted, X509_free);
224 sk_X509_pop_free(trusted, X509_free);
225 sk_X509_CRL_pop_free(crls, X509_CRL_free);
227 return (ret < 0 ? 2 : ret);
231 check(X509_STORE * ctx, char *file, STACK_OF(X509) * uchain,
232 STACK_OF(X509) * tchain, STACK_OF(X509_CRL) * crls)
238 x = load_cert(bio_err, file, FORMAT_PEM, NULL, "certificate file");
241 fprintf(stdout, "%s: ", (file == NULL) ? "stdin" : file);
243 csc = X509_STORE_CTX_new();
245 ERR_print_errors(bio_err);
248 X509_STORE_set_flags(ctx, vflags);
249 if (!X509_STORE_CTX_init(csc, ctx, x, uchain)) {
250 ERR_print_errors(bio_err);
254 X509_STORE_CTX_trusted_stack(csc, tchain);
256 X509_STORE_CTX_set0_crls(csc, crls);
257 i = X509_verify_cert(csc);
258 X509_STORE_CTX_free(csc);
264 fprintf(stdout, "OK\n");
267 ERR_print_errors(bio_err);
275 cb(int ok, X509_STORE_CTX * ctx)
277 int cert_error = X509_STORE_CTX_get_error(ctx);
278 X509 *current_cert = X509_STORE_CTX_get_current_cert(ctx);
282 X509_NAME_print_ex_fp(stdout,
283 X509_get_subject_name(current_cert),
287 printf("%serror %d at %d depth lookup:%s\n",
288 X509_STORE_CTX_get0_parent_ctx(ctx) ? "[CRL path]" : "",
290 X509_STORE_CTX_get_error_depth(ctx),
291 X509_verify_cert_error_string(cert_error));
292 switch (cert_error) {
293 case X509_V_ERR_NO_EXPLICIT_POLICY:
294 policies_print(NULL, ctx);
295 case X509_V_ERR_CERT_HAS_EXPIRED:
298 * since we are just checking the certificates, it is
299 * ok if they are self signed. But we should still
303 case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
304 /* Continue after extension errors too */
305 case X509_V_ERR_INVALID_CA:
306 case X509_V_ERR_INVALID_NON_CA:
307 case X509_V_ERR_PATH_LENGTH_EXCEEDED:
308 case X509_V_ERR_INVALID_PURPOSE:
309 case X509_V_ERR_CRL_HAS_EXPIRED:
310 case X509_V_ERR_CRL_NOT_YET_VALID:
311 case X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION:
319 if (cert_error == X509_V_OK && ok == 2)
320 policies_print(NULL, ctx);