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_CASTORE,
31 OPT_NOCAPATH, OPT_NOCAFILE, OPT_NOCASTORE,
32 OPT_UNTRUSTED, OPT_TRUSTED, OPT_CRLFILE, OPT_CRL_DOWNLOAD, OPT_SHOW_CHAIN,
33 OPT_V_ENUM, OPT_NAMEOPT,
34 OPT_VERBOSE, OPT_SM2ID, OPT_SM2HEXID
37 const OPTIONS verify_options[] = {
38 {OPT_HELP_STR, 1, '-', "Usage: %s [options] cert.pem...\n"},
40 OPT_SECTION("General"),
41 {"help", OPT_HELP, '-', "Display this summary"},
42 #ifndef OPENSSL_NO_ENGINE
43 {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
45 {"verbose", OPT_VERBOSE, '-',
46 "Print extra information about the operations being performed."},
47 {"nameopt", OPT_NAMEOPT, 's', "Various certificate name options"},
49 OPT_SECTION("Certificate chain"),
50 {"CApath", OPT_CAPATH, '/', "A directory of trusted certificates"},
51 {"CAfile", OPT_CAFILE, '<', "A file of trusted certificates"},
52 {"CAstore", OPT_CASTORE, ':', "URI to a store of trusted certificates"},
53 {"no-CAfile", OPT_NOCAFILE, '-',
54 "Do not load the default certificates file"},
55 {"no-CApath", OPT_NOCAPATH, '-',
56 "Do not load certificates from the default certificates directory"},
57 {"no-CAstore", OPT_NOCAPATH, '-',
58 "Do not load certificates from the default certificates store"},
59 {"untrusted", OPT_UNTRUSTED, '<', "A file of untrusted certificates"},
60 {"trusted", OPT_TRUSTED, '<', "A file of trusted certificates"},
61 {"CRLfile", OPT_CRLFILE, '<',
62 "File containing one or more CRL's (in PEM format) to load"},
63 {"crl_download", OPT_CRL_DOWNLOAD, '-',
64 "Attempt to download CRL information for this certificate"},
65 {"show_chain", OPT_SHOW_CHAIN, '-',
66 "Display information about the certificate chain"},
69 #ifndef OPENSSL_NO_SM2
70 {"sm2-id", OPT_SM2ID, 's',
71 "Specify an ID string to verify an SM2 certificate"},
72 {"sm2-hex-id", OPT_SM2HEXID, 's',
73 "Specify a hex ID string to verify an SM2 certificate"},
78 int verify_main(int argc, char **argv)
81 STACK_OF(X509) *untrusted = NULL, *trusted = NULL;
82 STACK_OF(X509_CRL) *crls = NULL;
83 X509_STORE *store = NULL;
84 X509_VERIFY_PARAM *vpm = NULL;
85 const char *prog, *CApath = NULL, *CAfile = NULL, *CAstore = NULL;
86 int noCApath = 0, noCAfile = 0, noCAstore = 0;
87 int vpmtouched = 0, crl_download = 0, show_chain = 0, i = 0, ret = 1;
89 unsigned char *sm2_id = NULL;
93 if ((vpm = X509_VERIFY_PARAM_new()) == NULL)
96 prog = opt_init(argc, argv, verify_options);
97 while ((o = opt_next()) != OPT_EOF) {
101 BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
104 opt_help(verify_options);
105 BIO_printf(bio_err, "Recognized usages:\n");
106 for (i = 0; i < X509_PURPOSE_get_count(); i++) {
108 ptmp = X509_PURPOSE_get0(i);
109 BIO_printf(bio_err, "\t%-10s\t%s\n",
110 X509_PURPOSE_get0_sname(ptmp),
111 X509_PURPOSE_get0_name(ptmp));
114 BIO_printf(bio_err, "Recognized verify names:\n");
115 for (i = 0; i < X509_VERIFY_PARAM_get_count(); i++) {
116 const X509_VERIFY_PARAM *vptmp;
117 vptmp = X509_VERIFY_PARAM_get0(i);
118 BIO_printf(bio_err, "\t%-10s\n",
119 X509_VERIFY_PARAM_get0_name(vptmp));
124 if (!opt_verify(o, vpm))
147 /* Zero or more times */
148 if (!load_certs(opt_arg(), &untrusted, FORMAT_PEM, NULL,
149 "untrusted certificates"))
153 /* Zero or more times */
157 if (!load_certs(opt_arg(), &trusted, FORMAT_PEM, NULL,
158 "trusted certificates"))
162 /* Zero or more times */
163 if (!load_crls(opt_arg(), &crls, FORMAT_PEM, NULL,
167 case OPT_CRL_DOWNLOAD:
171 if ((e = setup_engine(opt_arg(), 0)) == NULL) {
172 /* Failure message already displayed */
180 if (!set_nameopt(opt_arg()))
187 if (sm2_id != NULL) {
189 "Use one of the options 'sm2-hex-id' or 'sm2-id' \n");
192 sm2_id = (unsigned char *)opt_arg();
193 sm2_idlen = strlen((const char *)sm2_id);
196 if (sm2_id != NULL) {
198 "Use one of the options 'sm2-hex-id' or 'sm2-id' \n");
201 /* try to parse the input as hex string first */
203 sm2_id = OPENSSL_hexstr2buf(opt_arg(), (long *)&sm2_idlen);
204 if (sm2_id == NULL) {
205 BIO_printf(bio_err, "Invalid hex string input\n");
211 argc = opt_num_rest();
214 && (CAfile != NULL || CApath != NULL || CAstore != NULL)) {
216 "%s: Cannot use -trusted with -CAfile, -CApath or -CAstore\n",
221 if ((store = setup_verify(CAfile, noCAfile, CApath, noCApath,
222 CAstore, noCAstore)) == NULL)
224 X509_STORE_set_verify_cb(store, cb);
227 X509_STORE_set1_param(store, vpm);
232 store_setup_crl_download(store);
236 if (check(store, NULL, untrusted, trusted, crls, show_chain,
237 sm2_id, sm2_idlen) != 1)
240 for (i = 0; i < argc; i++)
241 if (check(store, argv[i], untrusted, trusted, crls,
242 show_chain, sm2_id, sm2_idlen) != 1)
248 OPENSSL_free(sm2_id);
249 X509_VERIFY_PARAM_free(vpm);
250 X509_STORE_free(store);
251 sk_X509_pop_free(untrusted, X509_free);
252 sk_X509_pop_free(trusted, X509_free);
253 sk_X509_CRL_pop_free(crls, X509_CRL_free);
255 return (ret < 0 ? 2 : ret);
258 static int check(X509_STORE *ctx, const char *file,
259 STACK_OF(X509) *uchain, STACK_OF(X509) *tchain,
260 STACK_OF(X509_CRL) *crls, int show_chain,
261 unsigned char *sm2id, size_t sm2idlen)
266 STACK_OF(X509) *chain = NULL;
269 x = load_cert(file, FORMAT_PEM, "certificate file");
274 #ifndef OPENSSL_NO_SM2
275 ASN1_OCTET_STRING *v;
277 v = ASN1_OCTET_STRING_new();
279 BIO_printf(bio_err, "error: SM2 ID allocation failed\n");
283 if (!ASN1_OCTET_STRING_set(v, sm2id, sm2idlen)) {
284 BIO_printf(bio_err, "error: setting SM2 ID failed\n");
285 ASN1_OCTET_STRING_free(v);
289 X509_set0_sm2_id(x, v);
293 csc = X509_STORE_CTX_new();
295 BIO_printf(bio_err, "error %s: X.509 store context allocation failed\n",
296 (file == NULL) ? "stdin" : file);
300 X509_STORE_set_flags(ctx, vflags);
301 if (!X509_STORE_CTX_init(csc, ctx, x, uchain)) {
302 X509_STORE_CTX_free(csc);
304 "error %s: X.509 store context initialization failed\n",
305 (file == NULL) ? "stdin" : file);
309 X509_STORE_CTX_set0_trusted_stack(csc, tchain);
311 X509_STORE_CTX_set0_crls(csc, crls);
312 i = X509_verify_cert(csc);
313 if (i > 0 && X509_STORE_CTX_get_error(csc) == X509_V_OK) {
314 BIO_printf(bio_out, "%s: OK\n", (file == NULL) ? "stdin" : file);
319 chain = X509_STORE_CTX_get1_chain(csc);
320 num_untrusted = X509_STORE_CTX_get_num_untrusted(csc);
321 BIO_printf(bio_out, "Chain:\n");
322 for (j = 0; j < sk_X509_num(chain); j++) {
323 X509 *cert = sk_X509_value(chain, j);
324 BIO_printf(bio_out, "depth=%d: ", j);
325 X509_NAME_print_ex_fp(stdout,
326 X509_get_subject_name(cert),
328 if (j < num_untrusted)
329 BIO_printf(bio_out, " (untrusted)");
330 BIO_printf(bio_out, "\n");
332 sk_X509_pop_free(chain, X509_free);
336 "error %s: verification failed\n",
337 (file == NULL) ? "stdin" : file);
339 X509_STORE_CTX_free(csc);
343 ERR_print_errors(bio_err);
349 static int cb(int ok, X509_STORE_CTX *ctx)
351 int cert_error = X509_STORE_CTX_get_error(ctx);
352 X509 *current_cert = X509_STORE_CTX_get_current_cert(ctx);
355 if (current_cert != NULL) {
356 X509_NAME_print_ex(bio_err,
357 X509_get_subject_name(current_cert),
359 BIO_printf(bio_err, "\n");
361 BIO_printf(bio_err, "%serror %d at %d depth lookup: %s\n",
362 X509_STORE_CTX_get0_parent_ctx(ctx) ? "[CRL path] " : "",
364 X509_STORE_CTX_get_error_depth(ctx),
365 X509_verify_cert_error_string(cert_error));
368 * Pretend that some errors are ok, so they don't stop further
369 * processing of the certificate chain. Setting ok = 1 does this.
370 * After X509_verify_cert() is done, we verify that there were
371 * no actual errors, even if the returned value was positive.
373 switch (cert_error) {
374 case X509_V_ERR_NO_EXPLICIT_POLICY:
377 case X509_V_ERR_CERT_HAS_EXPIRED:
378 /* Continue even if the leaf is a self signed cert */
379 case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
380 /* Continue after extension errors too */
381 case X509_V_ERR_INVALID_CA:
382 case X509_V_ERR_INVALID_NON_CA:
383 case X509_V_ERR_PATH_LENGTH_EXCEEDED:
384 case X509_V_ERR_INVALID_PURPOSE:
385 case X509_V_ERR_CRL_HAS_EXPIRED:
386 case X509_V_ERR_CRL_NOT_YET_VALID:
387 case X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION:
394 if (cert_error == X509_V_OK && ok == 2)