1 /* apps/verify.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
8 *
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
57 */
58
59 #include <stdio.h>
60 #include <stdlib.h>
61 #include <string.h>
62 #include "apps.h"
63 #include <openssl/bio.h>
64 #include <openssl/err.h>
65 #include <openssl/x509.h>
66 #include <openssl/x509v3.h>
67 #include <openssl/pem.h>
68
69 #undef PROG
70 #define PROG verify_main
71
72 static int MS_CALLBACK cb(int ok, X509_STORE_CTX *ctx);
73 static int check(X509_STORE *ctx, char *file, STACK_OF(X509) *uchain, STACK_OF(X509) *tchain, int purpose, ENGINE *e);
74 static STACK_OF(X509) *load_untrusted(char *file);
75 static int v_verbose=0, vflags = 0;
76
77 int MAIN(int, char **);
78
MAIN(int argc,char ** argv)79 int MAIN(int argc, char **argv)
80 {
81 ENGINE *e = NULL;
82 int i,ret=1, badarg = 0;
83 int purpose = -1;
84 char *CApath=NULL,*CAfile=NULL;
85 char *untfile = NULL, *trustfile = NULL;
86 STACK_OF(X509) *untrusted = NULL, *trusted = NULL;
87 X509_STORE *cert_ctx=NULL;
88 X509_LOOKUP *lookup=NULL;
89 X509_VERIFY_PARAM *vpm = NULL;
90 #ifndef OPENSSL_NO_ENGINE
91 char *engine=NULL;
92 #endif
93
94 cert_ctx=X509_STORE_new();
95 if (cert_ctx == NULL) goto end;
96 X509_STORE_set_verify_cb_func(cert_ctx,cb);
97
98 ERR_load_crypto_strings();
99
100 apps_startup();
101
102 if (bio_err == NULL)
103 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
104 BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
105
106 if (!load_config(bio_err, NULL))
107 goto end;
108
109 argc--;
110 argv++;
111 for (;;)
112 {
113 if (argc >= 1)
114 {
115 if (strcmp(*argv,"-CApath") == 0)
116 {
117 if (argc-- < 1) goto end;
118 CApath= *(++argv);
119 }
120 else if (strcmp(*argv,"-CAfile") == 0)
121 {
122 if (argc-- < 1) goto end;
123 CAfile= *(++argv);
124 }
125 else if (args_verify(&argv, &argc, &badarg, bio_err,
126 &vpm))
127 {
128 if (badarg)
129 goto end;
130 continue;
131 }
132 else if (strcmp(*argv,"-untrusted") == 0)
133 {
134 if (argc-- < 1) goto end;
135 untfile= *(++argv);
136 }
137 else if (strcmp(*argv,"-trusted") == 0)
138 {
139 if (argc-- < 1) goto end;
140 trustfile= *(++argv);
141 }
142 #ifndef OPENSSL_NO_ENGINE
143 else if (strcmp(*argv,"-engine") == 0)
144 {
145 if (--argc < 1) goto end;
146 engine= *(++argv);
147 }
148 #endif
149 else if (strcmp(*argv,"-help") == 0)
150 goto end;
151 else if (strcmp(*argv,"-verbose") == 0)
152 v_verbose=1;
153 else if (argv[0][0] == '-')
154 goto end;
155 else
156 break;
157 argc--;
158 argv++;
159 }
160 else
161 break;
162 }
163
164 #ifndef OPENSSL_NO_ENGINE
165 e = setup_engine(bio_err, engine, 0);
166 #endif
167
168 if (vpm)
169 X509_STORE_set1_param(cert_ctx, vpm);
170
171 lookup=X509_STORE_add_lookup(cert_ctx,X509_LOOKUP_file());
172 if (lookup == NULL) abort();
173 if (CAfile) {
174 i=X509_LOOKUP_load_file(lookup,CAfile,X509_FILETYPE_PEM);
175 if(!i) {
176 BIO_printf(bio_err, "Error loading file %s\n", CAfile);
177 ERR_print_errors(bio_err);
178 goto end;
179 }
180 } else X509_LOOKUP_load_file(lookup,NULL,X509_FILETYPE_DEFAULT);
181
182 lookup=X509_STORE_add_lookup(cert_ctx,X509_LOOKUP_hash_dir());
183 if (lookup == NULL) abort();
184 if (CApath) {
185 i=X509_LOOKUP_add_dir(lookup,CApath,X509_FILETYPE_PEM);
186 if(!i) {
187 BIO_printf(bio_err, "Error loading directory %s\n", CApath);
188 ERR_print_errors(bio_err);
189 goto end;
190 }
191 } else X509_LOOKUP_add_dir(lookup,NULL,X509_FILETYPE_DEFAULT);
192
193 ERR_clear_error();
194
195 if(untfile) {
196 if(!(untrusted = load_untrusted(untfile))) {
197 BIO_printf(bio_err, "Error loading untrusted file %s\n", untfile);
198 ERR_print_errors(bio_err);
199 goto end;
200 }
201 }
202
203 if(trustfile) {
204 if(!(trusted = load_untrusted(trustfile))) {
205 BIO_printf(bio_err, "Error loading untrusted file %s\n", trustfile);
206 ERR_print_errors(bio_err);
207 goto end;
208 }
209 }
210
211 if (argc < 1) check(cert_ctx, NULL, untrusted, trusted, purpose, e);
212 else
213 for (i=0; i<argc; i++)
214 check(cert_ctx,argv[i], untrusted, trusted, purpose, e);
215 ret=0;
216 end:
217 if (ret == 1) {
218 BIO_printf(bio_err,"usage: verify [-verbose] [-CApath path] [-CAfile file] [-purpose purpose] [-crl_check]");
219 #ifndef OPENSSL_NO_ENGINE
220 BIO_printf(bio_err," [-engine e]");
221 #endif
222 BIO_printf(bio_err," cert1 cert2 ...\n");
223 BIO_printf(bio_err,"recognized usages:\n");
224 for(i = 0; i < X509_PURPOSE_get_count(); i++) {
225 X509_PURPOSE *ptmp;
226 ptmp = X509_PURPOSE_get0(i);
227 BIO_printf(bio_err, "\t%-10s\t%s\n", X509_PURPOSE_get0_sname(ptmp),
228 X509_PURPOSE_get0_name(ptmp));
229 }
230 }
231 if (vpm) X509_VERIFY_PARAM_free(vpm);
232 if (cert_ctx != NULL) X509_STORE_free(cert_ctx);
233 sk_X509_pop_free(untrusted, X509_free);
234 sk_X509_pop_free(trusted, X509_free);
235 apps_shutdown();
236 OPENSSL_EXIT(ret);
237 }
238
check(X509_STORE * ctx,char * file,STACK_OF (X509)* uchain,STACK_OF (X509)* tchain,int purpose,ENGINE * e)239 static int check(X509_STORE *ctx, char *file, STACK_OF(X509) *uchain, STACK_OF(X509) *tchain, int purpose, ENGINE *e)
240 {
241 X509 *x=NULL;
242 int i=0,ret=0;
243 X509_STORE_CTX *csc;
244
245 x = load_cert(bio_err, file, FORMAT_PEM, NULL, e, "certificate file");
246 if (x == NULL)
247 goto end;
248 fprintf(stdout,"%s: ",(file == NULL)?"stdin":file);
249
250 csc = X509_STORE_CTX_new();
251 if (csc == NULL)
252 {
253 ERR_print_errors(bio_err);
254 goto end;
255 }
256 X509_STORE_set_flags(ctx, vflags);
257 if(!X509_STORE_CTX_init(csc,ctx,x,uchain))
258 {
259 ERR_print_errors(bio_err);
260 goto end;
261 }
262 if(tchain) X509_STORE_CTX_trusted_stack(csc, tchain);
263 if(purpose >= 0) X509_STORE_CTX_set_purpose(csc, purpose);
264 i=X509_verify_cert(csc);
265 X509_STORE_CTX_free(csc);
266
267 ret=0;
268 end:
269 if (i > 0)
270 {
271 fprintf(stdout,"OK\n");
272 ret=1;
273 }
274 else
275 ERR_print_errors(bio_err);
276 if (x != NULL) X509_free(x);
277
278 return(ret);
279 }
280
STACK_OF(X509)281 static STACK_OF(X509) *load_untrusted(char *certfile)
282 {
283 STACK_OF(X509_INFO) *sk=NULL;
284 STACK_OF(X509) *stack=NULL, *ret=NULL;
285 BIO *in=NULL;
286 X509_INFO *xi;
287
288 if(!(stack = sk_X509_new_null())) {
289 BIO_printf(bio_err,"memory allocation failure\n");
290 goto end;
291 }
292
293 if(!(in=BIO_new_file(certfile, "r"))) {
294 BIO_printf(bio_err,"error opening the file, %s\n",certfile);
295 goto end;
296 }
297
298 /* This loads from a file, a stack of x509/crl/pkey sets */
299 if(!(sk=PEM_X509_INFO_read_bio(in,NULL,NULL,NULL))) {
300 BIO_printf(bio_err,"error reading the file, %s\n",certfile);
301 goto end;
302 }
303
304 /* scan over it and pull out the certs */
305 while (sk_X509_INFO_num(sk))
306 {
307 xi=sk_X509_INFO_shift(sk);
308 if (xi->x509 != NULL)
309 {
310 sk_X509_push(stack,xi->x509);
311 xi->x509=NULL;
312 }
313 X509_INFO_free(xi);
314 }
315 if(!sk_X509_num(stack)) {
316 BIO_printf(bio_err,"no certificates in file, %s\n",certfile);
317 sk_X509_free(stack);
318 goto end;
319 }
320 ret=stack;
321 end:
322 BIO_free(in);
323 sk_X509_INFO_free(sk);
324 return(ret);
325 }
326
cb(int ok,X509_STORE_CTX * ctx)327 static int MS_CALLBACK cb(int ok, X509_STORE_CTX *ctx)
328 {
329 char buf[256];
330
331 if (!ok)
332 {
333 if (ctx->current_cert)
334 {
335 X509_NAME_oneline(
336 X509_get_subject_name(ctx->current_cert),buf,
337 sizeof buf);
338 printf("%s\n",buf);
339 }
340 printf("error %d at %d depth lookup:%s\n",ctx->error,
341 ctx->error_depth,
342 X509_verify_cert_error_string(ctx->error));
343 if (ctx->error == X509_V_ERR_CERT_HAS_EXPIRED) ok=1;
344 /* since we are just checking the certificates, it is
345 * ok if they are self signed. But we should still warn
346 * the user.
347 */
348 if (ctx->error == X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT) ok=1;
349 /* Continue after extension errors too */
350 if (ctx->error == X509_V_ERR_INVALID_CA) ok=1;
351 if (ctx->error == X509_V_ERR_INVALID_NON_CA) ok=1;
352 if (ctx->error == X509_V_ERR_PATH_LENGTH_EXCEEDED) ok=1;
353 if (ctx->error == X509_V_ERR_INVALID_PURPOSE) ok=1;
354 if (ctx->error == X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT) ok=1;
355 if (ctx->error == X509_V_ERR_CRL_HAS_EXPIRED) ok=1;
356 if (ctx->error == X509_V_ERR_CRL_NOT_YET_VALID) ok=1;
357 if (ctx->error == X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION) ok=1;
358
359 if (ctx->error == X509_V_ERR_NO_EXPLICIT_POLICY)
360 policies_print(NULL, ctx);
361 return ok;
362
363 }
364 if ((ctx->error == X509_V_OK) && (ok == 2))
365 policies_print(NULL, ctx);
366 if (!v_verbose)
367 ERR_clear_error();
368 return(ok);
369 }
370