2 * Copyright 1995-2020 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 STACK_OF(OPENSSL_STRING
) *opts
);
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
, OPT_VFYOPT
,
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', "Certificate subject/issuer name printing options"},
50 OPT_SECTION("Certificate chain"),
51 {"trusted", OPT_TRUSTED
, '<', "A file of trusted certificates"},
52 {"CAfile", OPT_CAFILE
, '<', "A file of trusted certificates"},
53 {"CApath", OPT_CAPATH
, '/', "A directory of files with trusted certificates"},
54 {"CAstore", OPT_CASTORE
, ':', "URI to a store of trusted certificates"},
55 {"no-CAfile", OPT_NOCAFILE
, '-',
56 "Do not load the default trusted certificates file"},
57 {"no-CApath", OPT_NOCAPATH
, '-',
58 "Do not load trusted certificates from the default directory"},
59 {"no-CAstore", OPT_NOCAPATH
, '-',
60 "Do not load trusted certificates from the default certificates store"},
61 {"untrusted", OPT_UNTRUSTED
, '<', "A file of untrusted 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 "Try downloading CRL information for certificates via their CDP entries"},
66 {"show_chain", OPT_SHOW_CHAIN
, '-',
67 "Display information about the certificate chain"},
70 {"vfyopt", OPT_VFYOPT
, 's', "Verification parameter in n:v form"},
75 {"cert", 0, 0, "Certificate(s) to verify (optional; stdin used otherwise)"},
79 int verify_main(int argc
, char **argv
)
82 STACK_OF(X509
) *untrusted
= NULL
, *trusted
= NULL
;
83 STACK_OF(X509_CRL
) *crls
= NULL
;
84 STACK_OF(OPENSSL_STRING
) *vfyopts
= NULL
;
85 X509_STORE
*store
= NULL
;
86 X509_VERIFY_PARAM
*vpm
= NULL
;
87 const char *prog
, *CApath
= NULL
, *CAfile
= NULL
, *CAstore
= NULL
;
88 int noCApath
= 0, noCAfile
= 0, noCAstore
= 0;
89 int vpmtouched
= 0, crl_download
= 0, show_chain
= 0, i
= 0, ret
= 1;
92 if ((vpm
= X509_VERIFY_PARAM_new()) == NULL
)
95 prog
= opt_init(argc
, argv
, verify_options
);
96 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
, "\nRecognized certificate chain purposes:\n");
106 for (i
= 0; i
< X509_PURPOSE_get_count(); i
++) {
107 X509_PURPOSE
*ptmp
= X509_PURPOSE_get0(i
);
109 BIO_printf(bio_err
, " %-15s %s\n",
110 X509_PURPOSE_get0_sname(ptmp
),
111 X509_PURPOSE_get0_name(ptmp
));
114 BIO_printf(bio_err
, "Recognized certificate policy names:\n");
115 for (i
= 0; i
< X509_VERIFY_PARAM_get_count(); i
++) {
116 const X509_VERIFY_PARAM
*vptmp
= X509_VERIFY_PARAM_get0(i
);
118 BIO_printf(bio_err
, " %s\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()))
185 vfyopts
= sk_OPENSSL_STRING_new_null();
186 if (!vfyopts
|| !sk_OPENSSL_STRING_push(vfyopts
, opt_arg()))
193 if (!opt_provider(o
))
198 argc
= opt_num_rest();
201 && (CAfile
!= NULL
|| CApath
!= NULL
|| CAstore
!= NULL
)) {
203 "%s: Cannot use -trusted with -CAfile, -CApath or -CAstore\n",
208 if ((store
= setup_verify(CAfile
, noCAfile
, CApath
, noCApath
,
209 CAstore
, noCAstore
)) == NULL
)
211 X509_STORE_set_verify_cb(store
, cb
);
214 X509_STORE_set1_param(store
, vpm
);
219 store_setup_crl_download(store
);
223 if (check(store
, NULL
, untrusted
, trusted
, crls
, show_chain
,
227 for (i
= 0; i
< argc
; i
++)
228 if (check(store
, argv
[i
], untrusted
, trusted
, crls
, show_chain
,
234 X509_VERIFY_PARAM_free(vpm
);
235 X509_STORE_free(store
);
236 sk_X509_pop_free(untrusted
, X509_free
);
237 sk_X509_pop_free(trusted
, X509_free
);
238 sk_X509_CRL_pop_free(crls
, X509_CRL_free
);
239 sk_OPENSSL_STRING_free(vfyopts
);
241 return (ret
< 0 ? 2 : ret
);
244 static int check(X509_STORE
*ctx
, const char *file
,
245 STACK_OF(X509
) *uchain
, STACK_OF(X509
) *tchain
,
246 STACK_OF(X509_CRL
) *crls
, int show_chain
,
247 STACK_OF(OPENSSL_STRING
) *opts
)
252 STACK_OF(X509
) *chain
= NULL
;
255 x
= load_cert(file
, FORMAT_PEM
, "certificate file");
260 for (i
= 0; i
< sk_OPENSSL_STRING_num(opts
); i
++) {
261 char *opt
= sk_OPENSSL_STRING_value(opts
, i
);
262 if (x509_ctrl_string(x
, opt
) <= 0) {
263 BIO_printf(bio_err
, "parameter error \"%s\"\n", opt
);
264 ERR_print_errors(bio_err
);
270 csc
= X509_STORE_CTX_new();
272 BIO_printf(bio_err
, "error %s: X.509 store context allocation failed\n",
273 (file
== NULL
) ? "stdin" : file
);
277 X509_STORE_set_flags(ctx
, vflags
);
278 if (!X509_STORE_CTX_init(csc
, ctx
, x
, uchain
)) {
279 X509_STORE_CTX_free(csc
);
281 "error %s: X.509 store context initialization failed\n",
282 (file
== NULL
) ? "stdin" : file
);
286 X509_STORE_CTX_set0_trusted_stack(csc
, tchain
);
288 X509_STORE_CTX_set0_crls(csc
, crls
);
289 i
= X509_verify_cert(csc
);
290 if (i
> 0 && X509_STORE_CTX_get_error(csc
) == X509_V_OK
) {
291 BIO_printf(bio_out
, "%s: OK\n", (file
== NULL
) ? "stdin" : file
);
296 chain
= X509_STORE_CTX_get1_chain(csc
);
297 num_untrusted
= X509_STORE_CTX_get_num_untrusted(csc
);
298 BIO_printf(bio_out
, "Chain:\n");
299 for (j
= 0; j
< sk_X509_num(chain
); j
++) {
300 X509
*cert
= sk_X509_value(chain
, j
);
301 BIO_printf(bio_out
, "depth=%d: ", j
);
302 X509_NAME_print_ex_fp(stdout
,
303 X509_get_subject_name(cert
),
305 if (j
< num_untrusted
)
306 BIO_printf(bio_out
, " (untrusted)");
307 BIO_printf(bio_out
, "\n");
309 sk_X509_pop_free(chain
, X509_free
);
313 "error %s: verification failed\n",
314 (file
== NULL
) ? "stdin" : file
);
316 X509_STORE_CTX_free(csc
);
320 ERR_print_errors(bio_err
);
326 static int cb(int ok
, X509_STORE_CTX
*ctx
)
328 int cert_error
= X509_STORE_CTX_get_error(ctx
);
329 X509
*current_cert
= X509_STORE_CTX_get_current_cert(ctx
);
332 if (current_cert
!= NULL
) {
333 X509_NAME_print_ex(bio_err
,
334 X509_get_subject_name(current_cert
),
336 BIO_printf(bio_err
, "\n");
338 BIO_printf(bio_err
, "%serror %d at %d depth lookup: %s\n",
339 X509_STORE_CTX_get0_parent_ctx(ctx
) ? "[CRL path] " : "",
341 X509_STORE_CTX_get_error_depth(ctx
),
342 X509_verify_cert_error_string(cert_error
));
345 * Pretend that some errors are ok, so they don't stop further
346 * processing of the certificate chain. Setting ok = 1 does this.
347 * After X509_verify_cert() is done, we verify that there were
348 * no actual errors, even if the returned value was positive.
350 switch (cert_error
) {
351 case X509_V_ERR_NO_EXPLICIT_POLICY
:
354 case X509_V_ERR_CERT_HAS_EXPIRED
:
355 /* Continue even if the leaf is a self signed cert */
356 case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT
:
357 /* Continue after extension errors too */
358 case X509_V_ERR_INVALID_CA
:
359 case X509_V_ERR_INVALID_NON_CA
:
360 case X509_V_ERR_PATH_LENGTH_EXCEEDED
:
361 case X509_V_ERR_INVALID_PURPOSE
:
362 case X509_V_ERR_CRL_HAS_EXPIRED
:
363 case X509_V_ERR_CRL_NOT_YET_VALID
:
364 case X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION
:
371 if (cert_error
== X509_V_OK
&& ok
== 2)