Make it possible to set a time for verification.
[openssl.git] / apps / verify.c
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,
74                 STACK_OF(X509) *uchain, STACK_OF(X509) *tchain,
75                 STACK_OF(X509_CRL) *crls, ENGINE *e, time_t at_time);
76 static int v_verbose=0, vflags = 0;
77
78 int MAIN(int, char **);
79
80 int MAIN(int argc, char **argv)
81         {
82         ENGINE *e = NULL;
83         int i,ret=1, badarg = 0;
84         char *CApath=NULL,*CAfile=NULL;
85         char *untfile = NULL, *trustfile = NULL, *crlfile = NULL;
86         char *checktime_string = NULL;
87         long int timestamp;
88         time_t t = 0;
89         STACK_OF(X509) *untrusted = NULL, *trusted = NULL;
90         STACK_OF(X509_CRL) *crls = NULL;
91         X509_STORE *cert_ctx=NULL;
92         X509_LOOKUP *lookup=NULL;
93         X509_VERIFY_PARAM *vpm = NULL;
94 #ifndef OPENSSL_NO_ENGINE
95         char *engine=NULL;
96 #endif
97
98         cert_ctx=X509_STORE_new();
99         if (cert_ctx == NULL) goto end;
100         X509_STORE_set_verify_cb(cert_ctx,cb);
101
102         ERR_load_crypto_strings();
103
104         apps_startup();
105
106         if (bio_err == NULL)
107                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
108                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
109
110         if (!load_config(bio_err, NULL))
111                 goto end;
112
113         argc--;
114         argv++;
115         for (;;)
116                 {
117                 if (argc >= 1)
118                         {
119                         if (strcmp(*argv,"-CApath") == 0)
120                                 {
121                                 if (argc-- < 1) goto end;
122                                 CApath= *(++argv);
123                                 }
124                         else if (strcmp(*argv,"-CAfile") == 0)
125                                 {
126                                 if (argc-- < 1) goto end;
127                                 CAfile= *(++argv);
128                                 }
129                         else if (args_verify(&argv, &argc, &badarg, bio_err,
130                                                                         &vpm))
131                                 {
132                                 if (badarg)
133                                         goto end;
134                                 continue;
135                                 }
136                         else if (strcmp(*argv,"-untrusted") == 0)
137                                 {
138                                 if (argc-- < 1) goto end;
139                                 untfile= *(++argv);
140                                 }
141                         else if (strcmp(*argv,"-trusted") == 0)
142                                 {
143                                 if (argc-- < 1) goto end;
144                                 trustfile= *(++argv);
145                                 }
146                         else if (strcmp(*argv,"-CRLfile") == 0)
147                                 {
148                                 if (argc-- < 1) goto end;
149                                 crlfile= *(++argv);
150                                 }
151                         else if (strcmp(*argv,"-attime") == 0)
152                                 {
153                                 if (argc-- < 1) goto end;
154                                 checktime_string= *(++argv);
155                                 }
156 #ifndef OPENSSL_NO_ENGINE
157                         else if (strcmp(*argv,"-engine") == 0)
158                                 {
159                                 if (--argc < 1) goto end;
160                                 engine= *(++argv);
161                                 }
162 #endif
163                         else if (strcmp(*argv,"-help") == 0)
164                                 goto end;
165                         else if (strcmp(*argv,"-verbose") == 0)
166                                 v_verbose=1;
167                         else if (argv[0][0] == '-')
168                                 goto end;
169                         else
170                                 break;
171                         argc--;
172                         argv++;
173                         }
174                 else
175                         break;
176                 }
177
178 #ifndef OPENSSL_NO_ENGINE
179         e = setup_engine(bio_err, engine, 0);
180 #endif
181
182         if (vpm)
183                 X509_STORE_set1_param(cert_ctx, vpm);
184
185         lookup=X509_STORE_add_lookup(cert_ctx,X509_LOOKUP_file());
186         if (lookup == NULL) abort();
187         if (CAfile) {
188                 i=X509_LOOKUP_load_file(lookup,CAfile,X509_FILETYPE_PEM);
189                 if(!i) {
190                         BIO_printf(bio_err, "Error loading file %s\n", CAfile);
191                         ERR_print_errors(bio_err);
192                         goto end;
193                 }
194         } else X509_LOOKUP_load_file(lookup,NULL,X509_FILETYPE_DEFAULT);
195                 
196         lookup=X509_STORE_add_lookup(cert_ctx,X509_LOOKUP_hash_dir());
197         if (lookup == NULL) abort();
198         if (CApath) {
199                 i=X509_LOOKUP_add_dir(lookup,CApath,X509_FILETYPE_PEM);
200                 if(!i) {
201                         BIO_printf(bio_err, "Error loading directory %s\n", CApath);
202                         ERR_print_errors(bio_err);
203                         goto end;
204                 }
205         } else X509_LOOKUP_add_dir(lookup,NULL,X509_FILETYPE_DEFAULT);
206
207         ERR_clear_error();
208
209         if(untfile)
210                 {
211                 untrusted = load_certs(bio_err, untfile, FORMAT_PEM,
212                                         NULL, e, "untrusted certificates");
213                 if(!untrusted)
214                         goto end;
215                 }
216
217         if(trustfile)
218                 {
219                 trusted = load_certs(bio_err, trustfile, FORMAT_PEM,
220                                         NULL, e, "trusted certificates");
221                 if(!trusted)
222                         goto end;
223                 }
224
225         if(crlfile)
226                 {
227                 crls = load_crls(bio_err, crlfile, FORMAT_PEM,
228                                         NULL, e, "other CRLs");
229                 if(!crls)
230                         goto end;
231                 }
232
233         if(checktime_string)
234                 {
235                 /* interpret the -attime argument as seconds since Epoch */
236                 if (sscanf(checktime_string, "%li", &timestamp) != 1)
237                         {
238                         BIO_printf(bio_err, "Error parsing timestamp %s\n",
239                                            checktime_string);
240                         ERR_print_errors(bio_err);
241                         goto end;
242                         }
243                 t = (time_t) timestamp;  /* on some platforms time_t may be a float */
244                 }
245
246         if (argc < 1) check(cert_ctx, NULL, untrusted, trusted, crls, e, t);
247         else
248                 for (i=0; i<argc; i++)
249                         check(cert_ctx,argv[i], untrusted, trusted, crls, e, t);
250         ret=0;
251 end:
252         if (ret == 1) {
253                 BIO_printf(bio_err,"usage: verify [-verbose] [-CApath path] [-CAfile file] [-purpose purpose] [-crl_check]");
254                 BIO_printf(bio_err," [-attime timestamp]");
255 #ifndef OPENSSL_NO_ENGINE
256                 BIO_printf(bio_err," [-engine e]");
257 #endif
258                 BIO_printf(bio_err," cert1 cert2 ...\n");
259
260                 BIO_printf(bio_err,"recognized usages:\n");
261                 for(i = 0; i < X509_PURPOSE_get_count(); i++)
262                         {
263                         X509_PURPOSE *ptmp;
264                         ptmp = X509_PURPOSE_get0(i);
265                         BIO_printf(bio_err, "\t%-10s\t%s\n",
266                                         X509_PURPOSE_get0_sname(ptmp),
267                                         X509_PURPOSE_get0_name(ptmp));
268                         }
269
270                 BIO_printf(bio_err,"recognized verify names:\n");
271                 for(i = 0; i < X509_VERIFY_PARAM_get_count(); i++)
272                         {
273                         const X509_VERIFY_PARAM *vptmp;
274                         vptmp = X509_VERIFY_PARAM_get0(i);
275                         BIO_printf(bio_err, "\t%-10s\n",
276                                         X509_VERIFY_PARAM_get0_name(vptmp));
277                         }
278
279         }
280         if (vpm) X509_VERIFY_PARAM_free(vpm);
281         if (cert_ctx != NULL) X509_STORE_free(cert_ctx);
282         sk_X509_pop_free(untrusted, X509_free);
283         sk_X509_pop_free(trusted, X509_free);
284         sk_X509_CRL_pop_free(crls, X509_CRL_free);
285         apps_shutdown();
286         OPENSSL_EXIT(ret);
287         }
288
289 static int check(X509_STORE *ctx, char *file,
290                 STACK_OF(X509) *uchain, STACK_OF(X509) *tchain,
291                 STACK_OF(X509_CRL) *crls, ENGINE *e, time_t at_time)
292         {
293         X509 *x=NULL;
294         int i=0,ret=0;
295         X509_STORE_CTX *csc;
296
297         x = load_cert(bio_err, file, FORMAT_PEM, NULL, e, "certificate file");
298         if (x == NULL)
299                 goto end;
300         fprintf(stdout,"%s: ",(file == NULL)?"stdin":file);
301
302         csc = X509_STORE_CTX_new();
303         if (csc == NULL)
304                 {
305                 ERR_print_errors(bio_err);
306                 goto end;
307                 }
308         X509_STORE_set_flags(ctx, vflags);
309         if(!X509_STORE_CTX_init(csc,ctx,x,uchain))
310                 {
311                 ERR_print_errors(bio_err);
312                 goto end;
313                 }
314         if(tchain) X509_STORE_CTX_trusted_stack(csc, tchain);
315         if (crls)
316                 X509_STORE_CTX_set0_crls(csc, crls);
317         if (at_time) 
318                 X509_STORE_CTX_set_time(csc, 0, at_time);
319
320         i=X509_verify_cert(csc);
321         X509_STORE_CTX_free(csc);
322
323         ret=0;
324 end:
325         if (i > 0)
326                 {
327                 fprintf(stdout,"OK\n");
328                 ret=1;
329                 }
330         else
331                 ERR_print_errors(bio_err);
332         if (x != NULL) X509_free(x);
333
334         return(ret);
335         }
336
337 static int MS_CALLBACK cb(int ok, X509_STORE_CTX *ctx)
338         {
339         int cert_error = X509_STORE_CTX_get_error(ctx);
340         X509 *current_cert = X509_STORE_CTX_get_current_cert(ctx);
341
342         if (!ok)
343                 {
344                 if (current_cert)
345                         {
346                         X509_NAME_print_ex_fp(stdout,
347                                 X509_get_subject_name(current_cert),
348                                 0, XN_FLAG_ONELINE);
349                         printf("\n");
350                         }
351                 printf("%serror %d at %d depth lookup:%s\n",
352                         X509_STORE_CTX_get0_parent_ctx(ctx) ? "[CRL path]" : "",
353                         cert_error,
354                         X509_STORE_CTX_get_error_depth(ctx),
355                         X509_verify_cert_error_string(cert_error));
356                 switch(cert_error)
357                         {
358                         case X509_V_ERR_NO_EXPLICIT_POLICY:
359                                 policies_print(NULL, ctx);
360                         case X509_V_ERR_CERT_HAS_EXPIRED:
361
362                         /* since we are just checking the certificates, it is
363                          * ok if they are self signed. But we should still warn
364                          * the user.
365                          */
366
367                         case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
368                         /* Continue after extension errors too */
369                         case X509_V_ERR_INVALID_CA:
370                         case X509_V_ERR_INVALID_NON_CA:
371                         case X509_V_ERR_PATH_LENGTH_EXCEEDED:
372                         case X509_V_ERR_INVALID_PURPOSE:
373                         case X509_V_ERR_CRL_HAS_EXPIRED:
374                         case X509_V_ERR_CRL_NOT_YET_VALID:
375                         case X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION:
376                         ok = 1;
377
378                         }
379
380                 return ok;
381
382                 }
383         if (cert_error == X509_V_OK && ok == 2)
384                 policies_print(NULL, ctx);
385         if (!v_verbose)
386                 ERR_clear_error();
387         return(ok);
388         }