2 * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
15 #include <openssl/bio.h>
16 #include <openssl/err.h>
17 #include <openssl/x509.h>
18 #include <openssl/x509v3.h>
19 #include <openssl/pem.h>
21 static int cb(int ok, X509_STORE_CTX *ctx);
22 static int check(X509_STORE *ctx, const char *file,
23 STACK_OF(X509) *uchain, STACK_OF(X509) *tchain,
24 STACK_OF(X509_CRL) *crls, int show_chain,
25 unsigned char *sm2id, size_t sm2idlen);
26 static int v_verbose = 0, vflags = 0;
28 typedef enum OPTION_choice {
29 OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
30 OPT_ENGINE, OPT_CAPATH, OPT_CAFILE, OPT_NOCAPATH, OPT_NOCAFILE,
31 OPT_UNTRUSTED, OPT_TRUSTED, OPT_CRLFILE, OPT_CRL_DOWNLOAD, OPT_SHOW_CHAIN,
32 OPT_V_ENUM, OPT_NAMEOPT,
33 OPT_VERBOSE, OPT_SM2ID, OPT_SM2HEXID
36 const OPTIONS verify_options[] = {
37 {OPT_HELP_STR, 1, '-', "Usage: %s [options] cert.pem...\n"},
38 {OPT_HELP_STR, 1, '-', "Valid options are:\n"},
39 {"help", OPT_HELP, '-', "Display this summary"},
40 {"verbose", OPT_VERBOSE, '-',
41 "Print extra information about the operations being performed."},
42 {"CApath", OPT_CAPATH, '/', "A directory of trusted certificates"},
43 {"CAfile", OPT_CAFILE, '<', "A file of trusted certificates"},
44 {"no-CAfile", OPT_NOCAFILE, '-',
45 "Do not load the default certificates file"},
46 {"no-CApath", OPT_NOCAPATH, '-',
47 "Do not load certificates from the default certificates directory"},
48 {"untrusted", OPT_UNTRUSTED, '<', "A file of untrusted certificates"},
49 {"trusted", OPT_TRUSTED, '<', "A file of trusted certificates"},
50 {"CRLfile", OPT_CRLFILE, '<',
51 "File containing one or more CRL's (in PEM format) to load"},
52 {"crl_download", OPT_CRL_DOWNLOAD, '-',
53 "Attempt to download CRL information for this certificate"},
54 {"show_chain", OPT_SHOW_CHAIN, '-',
55 "Display information about the certificate chain"},
56 {"nameopt", OPT_NAMEOPT, 's', "Various certificate name options"},
58 #ifndef OPENSSL_NO_ENGINE
59 {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
61 #ifndef OPENSSL_NO_SM2
62 {"sm2-id", OPT_SM2ID, 's',
63 "Specify an ID string to verify an SM2 certificate"},
64 {"sm2-hex-id", OPT_SM2HEXID, 's',
65 "Specify a hex ID string to verify an SM2 certificate"},
70 int verify_main(int argc, char **argv)
73 STACK_OF(X509) *untrusted = NULL, *trusted = NULL;
74 STACK_OF(X509_CRL) *crls = NULL;
75 X509_STORE *store = NULL;
76 X509_VERIFY_PARAM *vpm = NULL;
77 const char *prog, *CApath = NULL, *CAfile = NULL;
78 int noCApath = 0, noCAfile = 0;
79 int vpmtouched = 0, crl_download = 0, show_chain = 0, i = 0, ret = 1;
81 unsigned char *sm2_id = NULL;
84 if ((vpm = X509_VERIFY_PARAM_new()) == NULL)
87 prog = opt_init(argc, argv, verify_options);
88 while ((o = opt_next()) != OPT_EOF) {
92 BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
95 opt_help(verify_options);
96 BIO_printf(bio_err, "Recognized usages:\n");
97 for (i = 0; i < X509_PURPOSE_get_count(); i++) {
99 ptmp = X509_PURPOSE_get0(i);
100 BIO_printf(bio_err, "\t%-10s\t%s\n",
101 X509_PURPOSE_get0_sname(ptmp),
102 X509_PURPOSE_get0_name(ptmp));
105 BIO_printf(bio_err, "Recognized verify names:\n");
106 for (i = 0; i < X509_VERIFY_PARAM_get_count(); i++) {
107 const X509_VERIFY_PARAM *vptmp;
108 vptmp = X509_VERIFY_PARAM_get0(i);
109 BIO_printf(bio_err, "\t%-10s\n",
110 X509_VERIFY_PARAM_get0_name(vptmp));
115 if (!opt_verify(o, vpm))
132 /* Zero or more times */
133 if (!load_certs(opt_arg(), &untrusted, FORMAT_PEM, NULL,
134 "untrusted certificates"))
138 /* Zero or more times */
141 if (!load_certs(opt_arg(), &trusted, FORMAT_PEM, NULL,
142 "trusted certificates"))
146 /* Zero or more times */
147 if (!load_crls(opt_arg(), &crls, FORMAT_PEM, NULL,
151 case OPT_CRL_DOWNLOAD:
155 if ((e = setup_engine(opt_arg(), 0)) == NULL) {
156 /* Failure message already displayed */
164 if (!set_nameopt(opt_arg()))
171 /* we assume the input is not a hex string */
172 sm2_id = (unsigned char *)opt_arg();
173 sm2_idlen = strlen((const char *)sm2_id);
176 /* try to parse the input as hex string first */
177 sm2_id = OPENSSL_hexstr2buf(opt_arg(), (long *)&sm2_idlen);
178 if (sm2_id == NULL) {
179 BIO_printf(bio_err, "Invalid hex string input\n");
185 argc = opt_num_rest();
187 if (trusted != NULL && (CAfile || CApath)) {
189 "%s: Cannot use -trusted with -CAfile or -CApath\n",
194 if ((store = setup_verify(CAfile, CApath, noCAfile, noCApath)) == NULL)
196 X509_STORE_set_verify_cb(store, cb);
199 X509_STORE_set1_param(store, vpm);
204 store_setup_crl_download(store);
208 if (check(store, NULL, untrusted, trusted, crls, show_chain,
209 sm2_id, sm2_idlen) != 1)
212 for (i = 0; i < argc; i++)
213 if (check(store, argv[i], untrusted, trusted, crls,
214 show_chain, sm2_id, sm2_idlen) != 1)
219 X509_VERIFY_PARAM_free(vpm);
220 X509_STORE_free(store);
221 sk_X509_pop_free(untrusted, X509_free);
222 sk_X509_pop_free(trusted, X509_free);
223 sk_X509_CRL_pop_free(crls, X509_CRL_free);
225 return (ret < 0 ? 2 : ret);
228 static int check(X509_STORE *ctx, const char *file,
229 STACK_OF(X509) *uchain, STACK_OF(X509) *tchain,
230 STACK_OF(X509_CRL) *crls, int show_chain,
231 unsigned char *sm2id, size_t sm2idlen)
236 STACK_OF(X509) *chain = NULL;
239 x = load_cert(file, FORMAT_PEM, "certificate file");
244 #ifndef OPENSSL_NO_SM2
250 X509_set_sm2_id(x, &v);
254 csc = X509_STORE_CTX_new();
256 printf("error %s: X.509 store context allocation failed\n",
257 (file == NULL) ? "stdin" : file);
261 X509_STORE_set_flags(ctx, vflags);
262 if (!X509_STORE_CTX_init(csc, ctx, x, uchain)) {
263 X509_STORE_CTX_free(csc);
264 printf("error %s: X.509 store context initialization failed\n",
265 (file == NULL) ? "stdin" : file);
269 X509_STORE_CTX_set0_trusted_stack(csc, tchain);
271 X509_STORE_CTX_set0_crls(csc, crls);
272 i = X509_verify_cert(csc);
273 if (i > 0 && X509_STORE_CTX_get_error(csc) == X509_V_OK) {
274 printf("%s: OK\n", (file == NULL) ? "stdin" : file);
279 chain = X509_STORE_CTX_get1_chain(csc);
280 num_untrusted = X509_STORE_CTX_get_num_untrusted(csc);
282 for (j = 0; j < sk_X509_num(chain); j++) {
283 X509 *cert = sk_X509_value(chain, j);
284 printf("depth=%d: ", j);
285 X509_NAME_print_ex_fp(stdout,
286 X509_get_subject_name(cert),
288 if (j < num_untrusted)
289 printf(" (untrusted)");
292 sk_X509_pop_free(chain, X509_free);
295 printf("error %s: verification failed\n", (file == NULL) ? "stdin" : file);
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);
313 if (current_cert != NULL) {
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));
326 * Pretend that some errors are ok, so they don't stop further
327 * processing of the certificate chain. Setting ok = 1 does this.
328 * After X509_verify_cert() is done, we verify that there were
329 * no actual errors, even if the returned value was positive.
331 switch (cert_error) {
332 case X509_V_ERR_NO_EXPLICIT_POLICY:
335 case X509_V_ERR_CERT_HAS_EXPIRED:
336 /* Continue even if the leaf is a self signed cert */
337 case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
338 /* Continue after extension errors too */
339 case X509_V_ERR_INVALID_CA:
340 case X509_V_ERR_INVALID_NON_CA:
341 case X509_V_ERR_PATH_LENGTH_EXCEEDED:
342 case X509_V_ERR_INVALID_PURPOSE:
343 case X509_V_ERR_CRL_HAS_EXPIRED:
344 case X509_V_ERR_CRL_NOT_YET_VALID:
345 case X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION:
352 if (cert_error == X509_V_OK && ok == 2)