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846e33c7 | 1 | /* |
2234212c | 2 | * Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved. |
d02b48c6 | 3 | * |
846e33c7 RS |
4 | * Licensed under the OpenSSL license (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 | |
d02b48c6 RE |
8 | */ |
9 | ||
10 | #include <stdio.h> | |
11 | #include <stdlib.h> | |
12 | #include <string.h> | |
13 | #include "apps.h" | |
ec577822 BM |
14 | #include <openssl/bio.h> |
15 | #include <openssl/err.h> | |
16 | #include <openssl/x509.h> | |
d4cec6a1 | 17 | #include <openssl/x509v3.h> |
ec577822 | 18 | #include <openssl/pem.h> |
d02b48c6 | 19 | |
6d23cf97 | 20 | static int cb(int ok, X509_STORE_CTX *ctx); |
cc696296 | 21 | static int check(X509_STORE *ctx, const char *file, |
0f113f3e | 22 | STACK_OF(X509) *uchain, STACK_OF(X509) *tchain, |
a773b52a | 23 | STACK_OF(X509_CRL) *crls, int show_chain); |
0f113f3e | 24 | static int v_verbose = 0, vflags = 0; |
d02b48c6 | 25 | |
7e1b7485 RS |
26 | typedef enum OPTION_choice { |
27 | OPT_ERR = -1, OPT_EOF = 0, OPT_HELP, | |
2b6bcb70 MC |
28 | OPT_ENGINE, OPT_CAPATH, OPT_CAFILE, OPT_NOCAPATH, OPT_NOCAFILE, |
29 | OPT_UNTRUSTED, OPT_TRUSTED, OPT_CRLFILE, OPT_CRL_DOWNLOAD, OPT_SHOW_CHAIN, | |
bd91e3c8 | 30 | OPT_V_ENUM, OPT_NAMEOPT, |
7e1b7485 RS |
31 | OPT_VERBOSE |
32 | } OPTION_CHOICE; | |
33 | ||
44c83ebd | 34 | const OPTIONS verify_options[] = { |
7e1b7485 RS |
35 | {OPT_HELP_STR, 1, '-', "Usage: %s [options] cert.pem...\n"}, |
36 | {OPT_HELP_STR, 1, '-', "Valid options are:\n"}, | |
37 | {"help", OPT_HELP, '-', "Display this summary"}, | |
a64ba70d MC |
38 | {"verbose", OPT_VERBOSE, '-', |
39 | "Print extra information about the operations being performed."}, | |
40 | {"CApath", OPT_CAPATH, '/', "A directory of trusted certificates"}, | |
41 | {"CAfile", OPT_CAFILE, '<', "A file of trusted certificates"}, | |
2b6bcb70 MC |
42 | {"no-CAfile", OPT_NOCAFILE, '-', |
43 | "Do not load the default certificates file"}, | |
44 | {"no-CApath", OPT_NOCAPATH, '-', | |
45 | "Do not load certificates from the default certificates directory"}, | |
a64ba70d | 46 | {"untrusted", OPT_UNTRUSTED, '<', "A file of untrusted certificates"}, |
5b89036c | 47 | {"trusted", OPT_TRUSTED, '<', "A file of trusted certificates"}, |
a64ba70d MC |
48 | {"CRLfile", OPT_CRLFILE, '<', |
49 | "File containing one or more CRL's (in PEM format) to load"}, | |
50 | {"crl_download", OPT_CRL_DOWNLOAD, '-', | |
51 | "Attempt to download CRL information for this certificate"}, | |
52 | {"show_chain", OPT_SHOW_CHAIN, '-', | |
53 | "Display information about the certificate chain"}, | |
ad39b31c | 54 | {"nameopt", OPT_NAMEOPT, 's', "Various certificate name options"}, |
9c3bcfa0 | 55 | OPT_V_OPTIONS, |
7e1b7485 RS |
56 | #ifndef OPENSSL_NO_ENGINE |
57 | {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"}, | |
58 | #endif | |
7e1b7485 RS |
59 | {NULL} |
60 | }; | |
667ac4ec | 61 | |
7e1b7485 | 62 | int verify_main(int argc, char **argv) |
0f113f3e | 63 | { |
dd1abd44 | 64 | ENGINE *e = NULL; |
0f113f3e MC |
65 | STACK_OF(X509) *untrusted = NULL, *trusted = NULL; |
66 | STACK_OF(X509_CRL) *crls = NULL; | |
7e1b7485 | 67 | X509_STORE *store = NULL; |
0f113f3e | 68 | X509_VERIFY_PARAM *vpm = NULL; |
cc696296 | 69 | const char *prog, *CApath = NULL, *CAfile = NULL; |
2b6bcb70 | 70 | int noCApath = 0, noCAfile = 0; |
7e1b7485 RS |
71 | int vpmtouched = 0, crl_download = 0, show_chain = 0, i = 0, ret = 1; |
72 | OPTION_CHOICE o; | |
d02b48c6 | 73 | |
7e1b7485 | 74 | if ((vpm = X509_VERIFY_PARAM_new()) == NULL) |
0f113f3e | 75 | goto end; |
0f113f3e | 76 | |
7e1b7485 RS |
77 | prog = opt_init(argc, argv, verify_options); |
78 | while ((o = opt_next()) != OPT_EOF) { | |
79 | switch (o) { | |
80 | case OPT_EOF: | |
81 | case OPT_ERR: | |
82 | BIO_printf(bio_err, "%s: Use -help for summary.\n", prog); | |
83 | goto end; | |
84 | case OPT_HELP: | |
85 | opt_help(verify_options); | |
86 | BIO_printf(bio_err, "Recognized usages:\n"); | |
87 | for (i = 0; i < X509_PURPOSE_get_count(); i++) { | |
88 | X509_PURPOSE *ptmp; | |
89 | ptmp = X509_PURPOSE_get0(i); | |
90 | BIO_printf(bio_err, "\t%-10s\t%s\n", | |
91 | X509_PURPOSE_get0_sname(ptmp), | |
92 | X509_PURPOSE_get0_name(ptmp)); | |
93 | } | |
0f113f3e | 94 | |
7e1b7485 RS |
95 | BIO_printf(bio_err, "Recognized verify names:\n"); |
96 | for (i = 0; i < X509_VERIFY_PARAM_get_count(); i++) { | |
97 | const X509_VERIFY_PARAM *vptmp; | |
98 | vptmp = X509_VERIFY_PARAM_get0(i); | |
99 | BIO_printf(bio_err, "\t%-10s\n", | |
100 | X509_VERIFY_PARAM_get0_name(vptmp)); | |
0f113f3e | 101 | } |
7e1b7485 RS |
102 | ret = 0; |
103 | goto end; | |
104 | case OPT_V_CASES: | |
105 | if (!opt_verify(o, vpm)) | |
0f113f3e | 106 | goto end; |
7e1b7485 RS |
107 | vpmtouched++; |
108 | break; | |
109 | case OPT_CAPATH: | |
110 | CApath = opt_arg(); | |
111 | break; | |
112 | case OPT_CAFILE: | |
113 | CAfile = opt_arg(); | |
114 | break; | |
2b6bcb70 MC |
115 | case OPT_NOCAPATH: |
116 | noCApath = 1; | |
117 | break; | |
118 | case OPT_NOCAFILE: | |
119 | noCAfile = 1; | |
120 | break; | |
7e1b7485 | 121 | case OPT_UNTRUSTED: |
feb2f53e | 122 | /* Zero or more times */ |
a773b52a | 123 | if (!load_certs(opt_arg(), &untrusted, FORMAT_PEM, NULL, |
feb2f53e VD |
124 | "untrusted certificates")) |
125 | goto end; | |
7e1b7485 RS |
126 | break; |
127 | case OPT_TRUSTED: | |
feb2f53e VD |
128 | /* Zero or more times */ |
129 | noCAfile = 1; | |
130 | noCApath = 1; | |
a773b52a | 131 | if (!load_certs(opt_arg(), &trusted, FORMAT_PEM, NULL, |
feb2f53e VD |
132 | "trusted certificates")) |
133 | goto end; | |
7e1b7485 RS |
134 | break; |
135 | case OPT_CRLFILE: | |
feb2f53e | 136 | /* Zero or more times */ |
a773b52a | 137 | if (!load_crls(opt_arg(), &crls, FORMAT_PEM, NULL, |
feb2f53e VD |
138 | "other CRLs")) |
139 | goto end; | |
7e1b7485 RS |
140 | break; |
141 | case OPT_CRL_DOWNLOAD: | |
142 | crl_download = 1; | |
0f113f3e | 143 | break; |
a773b52a | 144 | case OPT_ENGINE: |
dd1abd44 | 145 | if ((e = setup_engine(opt_arg(), 0)) == NULL) { |
a773b52a RS |
146 | /* Failure message already displayed */ |
147 | goto end; | |
148 | } | |
149 | break; | |
7e1b7485 RS |
150 | case OPT_SHOW_CHAIN: |
151 | show_chain = 1; | |
152 | break; | |
ad39b31c | 153 | case OPT_NAMEOPT: |
b5c4209b | 154 | if (!set_nameopt(opt_arg())) |
ad39b31c DB |
155 | goto end; |
156 | break; | |
7e1b7485 RS |
157 | case OPT_VERBOSE: |
158 | v_verbose = 1; | |
159 | break; | |
160 | } | |
0f113f3e | 161 | } |
7e1b7485 RS |
162 | argc = opt_num_rest(); |
163 | argv = opt_rest(); | |
feb2f53e | 164 | if (trusted != NULL && (CAfile || CApath)) { |
5b89036c RS |
165 | BIO_printf(bio_err, |
166 | "%s: Cannot use -trusted with -CAfile or -CApath\n", | |
167 | prog); | |
168 | goto end; | |
169 | } | |
d02b48c6 | 170 | |
2b6bcb70 | 171 | if ((store = setup_verify(CAfile, CApath, noCAfile, noCApath)) == NULL) |
7e1b7485 RS |
172 | goto end; |
173 | X509_STORE_set_verify_cb(store, cb); | |
5270e702 | 174 | |
7e1b7485 RS |
175 | if (vpmtouched) |
176 | X509_STORE_set1_param(store, vpm); | |
0f113f3e MC |
177 | |
178 | ERR_clear_error(); | |
179 | ||
0f113f3e | 180 | if (crl_download) |
7e1b7485 | 181 | store_setup_crl_download(store); |
0f113f3e MC |
182 | |
183 | ret = 0; | |
184 | if (argc < 1) { | |
a773b52a | 185 | if (check(store, NULL, untrusted, trusted, crls, show_chain) != 1) |
0f113f3e MC |
186 | ret = -1; |
187 | } else { | |
188 | for (i = 0; i < argc; i++) | |
a773b52a | 189 | if (check(store, argv[i], untrusted, trusted, crls, |
7e1b7485 | 190 | show_chain) != 1) |
0f113f3e MC |
191 | ret = -1; |
192 | } | |
193 | ||
194 | end: | |
222561fe RS |
195 | X509_VERIFY_PARAM_free(vpm); |
196 | X509_STORE_free(store); | |
0f113f3e MC |
197 | sk_X509_pop_free(untrusted, X509_free); |
198 | sk_X509_pop_free(trusted, X509_free); | |
199 | sk_X509_CRL_pop_free(crls, X509_CRL_free); | |
dd1abd44 | 200 | release_engine(e); |
7e1b7485 | 201 | return (ret < 0 ? 2 : ret); |
0f113f3e | 202 | } |
d02b48c6 | 203 | |
cc696296 | 204 | static int check(X509_STORE *ctx, const char *file, |
0f113f3e | 205 | STACK_OF(X509) *uchain, STACK_OF(X509) *tchain, |
a773b52a | 206 | STACK_OF(X509_CRL) *crls, int show_chain) |
0f113f3e MC |
207 | { |
208 | X509 *x = NULL; | |
209 | int i = 0, ret = 0; | |
210 | X509_STORE_CTX *csc; | |
211 | STACK_OF(X509) *chain = NULL; | |
7f3f41d8 | 212 | int num_untrusted; |
0f113f3e | 213 | |
a773b52a | 214 | x = load_cert(file, FORMAT_PEM, "certificate file"); |
0f113f3e MC |
215 | if (x == NULL) |
216 | goto end; | |
0f113f3e MC |
217 | |
218 | csc = X509_STORE_CTX_new(); | |
219 | if (csc == NULL) { | |
63c6aa6b VD |
220 | printf("error %s: X.509 store context allocation failed\n", |
221 | (file == NULL) ? "stdin" : file); | |
0f113f3e MC |
222 | goto end; |
223 | } | |
a392ef20 | 224 | |
0f113f3e MC |
225 | X509_STORE_set_flags(ctx, vflags); |
226 | if (!X509_STORE_CTX_init(csc, ctx, x, uchain)) { | |
63c6aa6b VD |
227 | printf("error %s: X.509 store context initialization failed\n", |
228 | (file == NULL) ? "stdin" : file); | |
0f113f3e MC |
229 | goto end; |
230 | } | |
2234212c | 231 | if (tchain != NULL) |
f0e0fd51 | 232 | X509_STORE_CTX_set0_trusted_stack(csc, tchain); |
2234212c | 233 | if (crls != NULL) |
0f113f3e MC |
234 | X509_STORE_CTX_set0_crls(csc, crls); |
235 | i = X509_verify_cert(csc); | |
d9e309a6 | 236 | if (i > 0 && X509_STORE_CTX_get_error(csc) == X509_V_OK) { |
63c6aa6b | 237 | printf("%s: OK\n", (file == NULL) ? "stdin" : file); |
480405e4 | 238 | ret = 1; |
63c6aa6b VD |
239 | if (show_chain) { |
240 | int j; | |
bb484020 | 241 | |
63c6aa6b VD |
242 | chain = X509_STORE_CTX_get1_chain(csc); |
243 | num_untrusted = X509_STORE_CTX_get_num_untrusted(csc); | |
244 | printf("Chain:\n"); | |
245 | for (j = 0; j < sk_X509_num(chain); j++) { | |
246 | X509 *cert = sk_X509_value(chain, j); | |
247 | printf("depth=%d: ", j); | |
248 | X509_NAME_print_ex_fp(stdout, | |
249 | X509_get_subject_name(cert), | |
b5c4209b | 250 | 0, get_nameopt()); |
63c6aa6b VD |
251 | if (j < num_untrusted) |
252 | printf(" (untrusted)"); | |
253 | printf("\n"); | |
254 | } | |
255 | sk_X509_pop_free(chain, X509_free); | |
256 | } | |
257 | } else { | |
258 | printf("error %s: verification failed\n", (file == NULL) ? "stdin" : file); | |
7f3f41d8 | 259 | } |
0f113f3e MC |
260 | X509_STORE_CTX_free(csc); |
261 | ||
0f113f3e | 262 | end: |
480405e4 | 263 | if (i <= 0) |
63c6aa6b | 264 | ERR_print_errors(bio_err); |
222561fe | 265 | X509_free(x); |
0f113f3e | 266 | |
480405e4 | 267 | return ret; |
0f113f3e | 268 | } |
d02b48c6 | 269 | |
6d23cf97 | 270 | static int cb(int ok, X509_STORE_CTX *ctx) |
0f113f3e MC |
271 | { |
272 | int cert_error = X509_STORE_CTX_get_error(ctx); | |
273 | X509 *current_cert = X509_STORE_CTX_get_current_cert(ctx); | |
274 | ||
275 | if (!ok) { | |
2234212c | 276 | if (current_cert != NULL) { |
ecf3a1fb RS |
277 | X509_NAME_print_ex(bio_err, |
278 | X509_get_subject_name(current_cert), | |
b5c4209b | 279 | 0, get_nameopt()); |
ecf3a1fb | 280 | BIO_printf(bio_err, "\n"); |
0f113f3e | 281 | } |
63c6aa6b VD |
282 | BIO_printf(bio_err, "%serror %d at %d depth lookup: %s\n", |
283 | X509_STORE_CTX_get0_parent_ctx(ctx) ? "[CRL path] " : "", | |
0f113f3e MC |
284 | cert_error, |
285 | X509_STORE_CTX_get_error_depth(ctx), | |
286 | X509_verify_cert_error_string(cert_error)); | |
287 | switch (cert_error) { | |
288 | case X509_V_ERR_NO_EXPLICIT_POLICY: | |
ecf3a1fb | 289 | policies_print(ctx); |
018fcbec | 290 | /* fall thru */ |
0f113f3e MC |
291 | case X509_V_ERR_CERT_HAS_EXPIRED: |
292 | ||
293 | /* | |
294 | * since we are just checking the certificates, it is ok if they | |
295 | * are self signed. But we should still warn the user. | |
296 | */ | |
0f113f3e MC |
297 | case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT: |
298 | /* Continue after extension errors too */ | |
299 | case X509_V_ERR_INVALID_CA: | |
300 | case X509_V_ERR_INVALID_NON_CA: | |
301 | case X509_V_ERR_PATH_LENGTH_EXCEEDED: | |
302 | case X509_V_ERR_INVALID_PURPOSE: | |
303 | case X509_V_ERR_CRL_HAS_EXPIRED: | |
304 | case X509_V_ERR_CRL_NOT_YET_VALID: | |
305 | case X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION: | |
306 | ok = 1; | |
0f113f3e MC |
307 | } |
308 | ||
309 | return ok; | |
310 | ||
311 | } | |
312 | if (cert_error == X509_V_OK && ok == 2) | |
ecf3a1fb | 313 | policies_print(ctx); |
0f113f3e MC |
314 | if (!v_verbose) |
315 | ERR_clear_error(); | |
26a7d938 | 316 | return ok; |
0f113f3e | 317 | } |