1 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
4 * This package is an SSL implementation written
5 * by Eric Young (eay@cryptsoft.com).
6 * The implementation was written so as to conform with Netscapes SSL.
8 * This library is free for commercial and non-commercial use as long as
9 * the following conditions are aheared to. The following conditions
10 * apply to all code found in this distribution, be it the RC4, RSA,
11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
12 * included with this distribution is covered by the same copyright terms
13 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 * Copyright remains Eric Young's, and as such any Copyright notices in
16 * the code are not to be removed.
17 * If this package is used in a product, Eric Young should be given attribution
18 * as the author of the parts of the library used.
19 * This can be in the form of a textual message at program startup or
20 * in documentation (online or textual) provided with the package.
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
25 * 1. Redistributions of source code must retain the copyright
26 * notice, this list of conditions and the following disclaimer.
27 * 2. Redistributions in binary form must reproduce the above copyright
28 * notice, this list of conditions and the following disclaimer in the
29 * documentation and/or other materials provided with the distribution.
30 * 3. All advertising materials mentioning features or use of this software
31 * must display the following acknowledgement:
32 * "This product includes cryptographic software written by
33 * Eric Young (eay@cryptsoft.com)"
34 * The word 'cryptographic' can be left out if the rouines from the library
35 * being used are not cryptographic related :-).
36 * 4. If you include any Windows specific code (or a derivative thereof) from
37 * the apps directory (application code) you must include an acknowledgement:
38 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
52 * The licence and distribution terms for any publically available version or
53 * derivative of this code cannot be changed. i.e. this code cannot simply be
54 * copied and put under another distribution licence
55 * [including the GNU Public Licence.]
62 #include <openssl/bio.h>
63 #include <openssl/err.h>
64 #include <openssl/x509.h>
65 #include <openssl/x509v3.h>
66 #include <openssl/pem.h>
68 static int cb(int ok, X509_STORE_CTX *ctx);
69 static int check(X509_STORE *ctx, char *file,
70 STACK_OF(X509) *uchain, STACK_OF(X509) *tchain,
71 STACK_OF(X509_CRL) *crls, ENGINE *e, int show_chain);
72 static int v_verbose = 0, vflags = 0;
74 typedef enum OPTION_choice {
75 OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
76 OPT_ENGINE, OPT_CAPATH, OPT_CAFILE, OPT_UNTRUSTED, OPT_TRUSTED,
77 OPT_CRLFILE, OPT_CRL_DOWNLOAD, OPT_SHOW_CHAIN,
82 OPTIONS verify_options[] = {
83 {OPT_HELP_STR, 1, '-', "Usage: %s [options] cert.pem...\n"},
84 {OPT_HELP_STR, 1, '-', "Valid options are:\n"},
85 {"help", OPT_HELP, '-', "Display this summary"},
86 {"verbose", OPT_VERBOSE, '-',
87 "Print extra information about the operations being performed."},
88 {"CApath", OPT_CAPATH, '/', "A directory of trusted certificates"},
89 {"CAfile", OPT_CAFILE, '<', "A file of trusted certificates"},
90 {"untrusted", OPT_UNTRUSTED, '<', "A file of untrusted certificates"},
91 {"trusted", OPT_TRUSTED, '<', "A file of trusted certificates"},
92 {"CRLfile", OPT_CRLFILE, '<',
93 "File containing one or more CRL's (in PEM format) to load"},
94 {"crl_download", OPT_CRL_DOWNLOAD, '-',
95 "Attempt to download CRL information for this certificate"},
96 {"show_chain", OPT_SHOW_CHAIN, '-',
97 "Display information about the certificate chain"},
99 #ifndef OPENSSL_NO_ENGINE
100 {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
105 int verify_main(int argc, char **argv)
108 STACK_OF(X509) *untrusted = NULL, *trusted = NULL;
109 STACK_OF(X509_CRL) *crls = NULL;
110 X509_STORE *store = NULL;
111 X509_VERIFY_PARAM *vpm = NULL;
112 char *prog, *CApath = NULL, *CAfile = NULL;
113 char *untfile = NULL, *trustfile = NULL, *crlfile = NULL;
114 int vpmtouched = 0, crl_download = 0, show_chain = 0, i = 0, ret = 1;
117 if ((vpm = X509_VERIFY_PARAM_new()) == NULL)
120 prog = opt_init(argc, argv, verify_options);
121 while ((o = opt_next()) != OPT_EOF) {
125 BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
128 opt_help(verify_options);
129 BIO_printf(bio_err, "Recognized usages:\n");
130 for (i = 0; i < X509_PURPOSE_get_count(); i++) {
132 ptmp = X509_PURPOSE_get0(i);
133 BIO_printf(bio_err, "\t%-10s\t%s\n",
134 X509_PURPOSE_get0_sname(ptmp),
135 X509_PURPOSE_get0_name(ptmp));
138 BIO_printf(bio_err, "Recognized verify names:\n");
139 for (i = 0; i < X509_VERIFY_PARAM_get_count(); i++) {
140 const X509_VERIFY_PARAM *vptmp;
141 vptmp = X509_VERIFY_PARAM_get0(i);
142 BIO_printf(bio_err, "\t%-10s\n",
143 X509_VERIFY_PARAM_get0_name(vptmp));
148 if (!opt_verify(o, vpm))
162 trustfile = opt_arg();
167 case OPT_CRL_DOWNLOAD:
174 e = setup_engine(opt_arg(), 0);
181 argc = opt_num_rest();
183 if (trustfile && (CAfile || CApath)) {
185 "%s: Cannot use -trusted with -CAfile or -CApath\n",
190 if (!app_load_modules(NULL))
193 if ((store = setup_verify(CAfile, CApath)) == NULL)
195 X509_STORE_set_verify_cb(store, cb);
198 X509_STORE_set1_param(store, vpm);
203 untrusted = load_certs(untfile, FORMAT_PEM,
204 NULL, e, "untrusted certificates");
210 trusted = load_certs(trustfile, FORMAT_PEM,
211 NULL, e, "trusted certificates");
217 crls = load_crls(crlfile, FORMAT_PEM, NULL, e, "other CRLs");
223 store_setup_crl_download(store);
227 if (check(store, NULL, untrusted, trusted, crls, e, show_chain) != 1)
230 for (i = 0; i < argc; i++)
231 if (check(store, argv[i], untrusted, trusted, crls, e,
237 X509_VERIFY_PARAM_free(vpm);
238 X509_STORE_free(store);
239 sk_X509_pop_free(untrusted, X509_free);
240 sk_X509_pop_free(trusted, X509_free);
241 sk_X509_CRL_pop_free(crls, X509_CRL_free);
242 return (ret < 0 ? 2 : ret);
245 static int check(X509_STORE *ctx, char *file,
246 STACK_OF(X509) *uchain, STACK_OF(X509) *tchain,
247 STACK_OF(X509_CRL) *crls, ENGINE *e, int show_chain)
252 STACK_OF(X509) *chain = NULL;
255 x = load_cert(file, FORMAT_PEM, NULL, e, "certificate file");
258 printf("%s: ", (file == NULL) ? "stdin" : file);
260 csc = X509_STORE_CTX_new();
262 ERR_print_errors(bio_err);
265 X509_STORE_set_flags(ctx, vflags);
266 if (!X509_STORE_CTX_init(csc, ctx, x, uchain)) {
267 ERR_print_errors(bio_err);
271 X509_STORE_CTX_trusted_stack(csc, tchain);
273 X509_STORE_CTX_set0_crls(csc, crls);
274 i = X509_verify_cert(csc);
281 chain = X509_STORE_CTX_get1_chain(csc);
282 num_untrusted = X509_STORE_CTX_get_num_untrusted(csc);
284 for (j = 0; j < sk_X509_num(chain); j++) {
285 X509 *cert = sk_X509_value(chain, j);
286 printf("depth=%d: ", j);
287 X509_NAME_print_ex_fp(stdout,
288 X509_get_subject_name(cert),
290 if (j < num_untrusted)
291 printf(" (untrusted)");
294 sk_X509_pop_free(chain, X509_free);
297 X509_STORE_CTX_free(csc);
301 ERR_print_errors(bio_err);
307 static int cb(int ok, X509_STORE_CTX *ctx)
309 int cert_error = X509_STORE_CTX_get_error(ctx);
310 X509 *current_cert = X509_STORE_CTX_get_current_cert(ctx);
314 X509_NAME_print_ex(bio_err,
315 X509_get_subject_name(current_cert),
317 BIO_printf(bio_err, "\n");
319 BIO_printf(bio_err, "%serror %d at %d depth lookup:%s\n",
320 X509_STORE_CTX_get0_parent_ctx(ctx) ? "[CRL path]" : "",
322 X509_STORE_CTX_get_error_depth(ctx),
323 X509_verify_cert_error_string(cert_error));
324 switch (cert_error) {
325 case X509_V_ERR_NO_EXPLICIT_POLICY:
327 case X509_V_ERR_CERT_HAS_EXPIRED:
330 * since we are just checking the certificates, it is ok if they
331 * are self signed. But we should still warn the user.
333 case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
334 /* Continue after extension errors too */
335 case X509_V_ERR_INVALID_CA:
336 case X509_V_ERR_INVALID_NON_CA:
337 case X509_V_ERR_PATH_LENGTH_EXCEEDED:
338 case X509_V_ERR_INVALID_PURPOSE:
339 case X509_V_ERR_CRL_HAS_EXPIRED:
340 case X509_V_ERR_CRL_NOT_YET_VALID:
341 case X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION:
348 if (cert_error == X509_V_OK && ok == 2)