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,
38 const OPTIONS verify_options[] = {
39 {OPT_HELP_STR, 1, '-', "Usage: %s [options] [cert...]\n"},
41 OPT_SECTION("General"),
42 {"help", OPT_HELP, '-', "Display this summary"},
43 #ifndef OPENSSL_NO_ENGINE
44 {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
46 {"verbose", OPT_VERBOSE, '-',
47 "Print extra information about the operations being performed."},
48 {"nameopt", OPT_NAMEOPT, 's', "Various certificate name options"},
50 OPT_SECTION("Certificate chain"),
51 {"CApath", OPT_CAPATH, '/', "A directory of trusted certificates"},
52 {"CAfile", OPT_CAFILE, '<', "A file of trusted certificates"},
53 {"CAstore", OPT_CASTORE, ':', "URI to a store of trusted certificates"},
54 {"no-CAfile", OPT_NOCAFILE, '-',
55 "Do not load the default certificates file"},
56 {"no-CApath", OPT_NOCAPATH, '-',
57 "Do not load certificates from the default certificates directory"},
58 {"no-CAstore", OPT_NOCAPATH, '-',
59 "Do not load certificates from the default certificates store"},
60 {"untrusted", OPT_UNTRUSTED, '<', "A file of untrusted certificates"},
61 {"trusted", OPT_TRUSTED, '<', "A file of trusted certificates"},
62 {"CRLfile", OPT_CRLFILE, '<',
63 "File containing one or more CRL's (in PEM format) to load"},
64 {"crl_download", OPT_CRL_DOWNLOAD, '-',
65 "Attempt to download CRL information for this certificate"},
66 {"show_chain", OPT_SHOW_CHAIN, '-',
67 "Display information about the certificate chain"},
70 #ifndef OPENSSL_NO_SM2
71 {"sm2-id", OPT_SM2ID, 's',
72 "Specify an ID string to verify an SM2 certificate"},
73 {"sm2-hex-id", OPT_SM2HEXID, 's',
74 "Specify a hex ID string to verify an SM2 certificate"},
80 {"cert", 0, 0, "Certificate(s) to verify (optional; stdin used otherwise)"},
84 int verify_main(int argc, char **argv)
87 STACK_OF(X509) *untrusted = NULL, *trusted = NULL;
88 STACK_OF(X509_CRL) *crls = NULL;
89 X509_STORE *store = NULL;
90 X509_VERIFY_PARAM *vpm = NULL;
91 const char *prog, *CApath = NULL, *CAfile = NULL, *CAstore = NULL;
92 int noCApath = 0, noCAfile = 0, noCAstore = 0;
93 int vpmtouched = 0, crl_download = 0, show_chain = 0, i = 0, ret = 1;
95 unsigned char *sm2_id = NULL;
99 if ((vpm = X509_VERIFY_PARAM_new()) == NULL)
102 prog = opt_init(argc, argv, verify_options);
103 while ((o = opt_next()) != OPT_EOF) {
107 BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
110 opt_help(verify_options);
111 BIO_printf(bio_err, "\nRecognized certificate chain purposes:\n");
112 for (i = 0; i < X509_PURPOSE_get_count(); i++) {
113 X509_PURPOSE *ptmp = X509_PURPOSE_get0(i);
115 BIO_printf(bio_err, " %-15s %s\n",
116 X509_PURPOSE_get0_sname(ptmp),
117 X509_PURPOSE_get0_name(ptmp));
120 BIO_printf(bio_err, "Recognized certificate policy names:\n");
121 for (i = 0; i < X509_VERIFY_PARAM_get_count(); i++) {
122 const X509_VERIFY_PARAM *vptmp = X509_VERIFY_PARAM_get0(i);
124 BIO_printf(bio_err, " %s\n",
125 X509_VERIFY_PARAM_get0_name(vptmp));
130 if (!opt_verify(o, vpm))
153 /* Zero or more times */
154 if (!load_certs(opt_arg(), &untrusted, FORMAT_PEM, NULL,
155 "untrusted certificates"))
159 /* Zero or more times */
163 if (!load_certs(opt_arg(), &trusted, FORMAT_PEM, NULL,
164 "trusted certificates"))
168 /* Zero or more times */
169 if (!load_crls(opt_arg(), &crls, FORMAT_PEM, NULL,
173 case OPT_CRL_DOWNLOAD:
177 if ((e = setup_engine(opt_arg(), 0)) == NULL) {
178 /* Failure message already displayed */
186 if (!set_nameopt(opt_arg()))
193 if (sm2_id != NULL) {
195 "Use one of the options 'sm2-hex-id' or 'sm2-id' \n");
198 sm2_id = (unsigned char *)opt_arg();
199 sm2_idlen = strlen((const char *)sm2_id);
202 if (sm2_id != NULL) {
204 "Use one of the options 'sm2-hex-id' or 'sm2-id' \n");
207 /* try to parse the input as hex string first */
209 sm2_id = OPENSSL_hexstr2buf(opt_arg(), (long *)&sm2_idlen);
210 if (sm2_id == NULL) {
211 BIO_printf(bio_err, "Invalid hex string input\n");
216 if (!opt_provider(o))
221 argc = opt_num_rest();
224 && (CAfile != NULL || CApath != NULL || CAstore != NULL)) {
226 "%s: Cannot use -trusted with -CAfile, -CApath or -CAstore\n",
231 if ((store = setup_verify(CAfile, noCAfile, CApath, noCApath,
232 CAstore, noCAstore)) == NULL)
234 X509_STORE_set_verify_cb(store, cb);
237 X509_STORE_set1_param(store, vpm);
242 store_setup_crl_download(store);
246 if (check(store, NULL, untrusted, trusted, crls, show_chain,
247 sm2_id, sm2_idlen) != 1)
250 for (i = 0; i < argc; i++)
251 if (check(store, argv[i], untrusted, trusted, crls,
252 show_chain, sm2_id, sm2_idlen) != 1)
258 OPENSSL_free(sm2_id);
259 X509_VERIFY_PARAM_free(vpm);
260 X509_STORE_free(store);
261 sk_X509_pop_free(untrusted, X509_free);
262 sk_X509_pop_free(trusted, X509_free);
263 sk_X509_CRL_pop_free(crls, X509_CRL_free);
265 return (ret < 0 ? 2 : ret);
268 static int check(X509_STORE *ctx, const char *file,
269 STACK_OF(X509) *uchain, STACK_OF(X509) *tchain,
270 STACK_OF(X509_CRL) *crls, int show_chain,
271 unsigned char *sm2id, size_t sm2idlen)
276 STACK_OF(X509) *chain = NULL;
279 x = load_cert(file, FORMAT_PEM, "certificate file");
284 #ifndef OPENSSL_NO_SM2
285 ASN1_OCTET_STRING *v;
287 v = ASN1_OCTET_STRING_new();
289 BIO_printf(bio_err, "error: SM2 ID allocation failed\n");
293 if (!ASN1_OCTET_STRING_set(v, sm2id, sm2idlen)) {
294 BIO_printf(bio_err, "error: setting SM2 ID failed\n");
295 ASN1_OCTET_STRING_free(v);
299 X509_set0_sm2_id(x, v);
303 csc = X509_STORE_CTX_new();
305 BIO_printf(bio_err, "error %s: X.509 store context allocation failed\n",
306 (file == NULL) ? "stdin" : file);
310 X509_STORE_set_flags(ctx, vflags);
311 if (!X509_STORE_CTX_init(csc, ctx, x, uchain)) {
312 X509_STORE_CTX_free(csc);
314 "error %s: X.509 store context initialization failed\n",
315 (file == NULL) ? "stdin" : file);
319 X509_STORE_CTX_set0_trusted_stack(csc, tchain);
321 X509_STORE_CTX_set0_crls(csc, crls);
322 i = X509_verify_cert(csc);
323 if (i > 0 && X509_STORE_CTX_get_error(csc) == X509_V_OK) {
324 BIO_printf(bio_out, "%s: OK\n", (file == NULL) ? "stdin" : file);
329 chain = X509_STORE_CTX_get1_chain(csc);
330 num_untrusted = X509_STORE_CTX_get_num_untrusted(csc);
331 BIO_printf(bio_out, "Chain:\n");
332 for (j = 0; j < sk_X509_num(chain); j++) {
333 X509 *cert = sk_X509_value(chain, j);
334 BIO_printf(bio_out, "depth=%d: ", j);
335 X509_NAME_print_ex_fp(stdout,
336 X509_get_subject_name(cert),
338 if (j < num_untrusted)
339 BIO_printf(bio_out, " (untrusted)");
340 BIO_printf(bio_out, "\n");
342 sk_X509_pop_free(chain, X509_free);
346 "error %s: verification failed\n",
347 (file == NULL) ? "stdin" : file);
349 X509_STORE_CTX_free(csc);
353 ERR_print_errors(bio_err);
359 static int cb(int ok, X509_STORE_CTX *ctx)
361 int cert_error = X509_STORE_CTX_get_error(ctx);
362 X509 *current_cert = X509_STORE_CTX_get_current_cert(ctx);
365 if (current_cert != NULL) {
366 X509_NAME_print_ex(bio_err,
367 X509_get_subject_name(current_cert),
369 BIO_printf(bio_err, "\n");
371 BIO_printf(bio_err, "%serror %d at %d depth lookup: %s\n",
372 X509_STORE_CTX_get0_parent_ctx(ctx) ? "[CRL path] " : "",
374 X509_STORE_CTX_get_error_depth(ctx),
375 X509_verify_cert_error_string(cert_error));
378 * Pretend that some errors are ok, so they don't stop further
379 * processing of the certificate chain. Setting ok = 1 does this.
380 * After X509_verify_cert() is done, we verify that there were
381 * no actual errors, even if the returned value was positive.
383 switch (cert_error) {
384 case X509_V_ERR_NO_EXPLICIT_POLICY:
387 case X509_V_ERR_CERT_HAS_EXPIRED:
388 /* Continue even if the leaf is a self signed cert */
389 case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
390 /* Continue after extension errors too */
391 case X509_V_ERR_INVALID_CA:
392 case X509_V_ERR_INVALID_NON_CA:
393 case X509_V_ERR_PATH_LENGTH_EXCEEDED:
394 case X509_V_ERR_INVALID_PURPOSE:
395 case X509_V_ERR_CRL_HAS_EXPIRED:
396 case X509_V_ERR_CRL_NOT_YET_VALID:
397 case X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION:
404 if (cert_error == X509_V_OK && ok == 2)