Add generationQualifier OID (proposed by Fiel Cabral).
[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, 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
79 int MAIN(int argc, char **argv)
80         {
81         ENGINE *e = NULL;
82         int i,ret=1;
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         char *engine=NULL;
90
91         cert_ctx=X509_STORE_new();
92         if (cert_ctx == NULL) goto end;
93         X509_STORE_set_verify_cb_func(cert_ctx,cb);
94
95         ERR_load_crypto_strings();
96
97         apps_startup();
98
99         if (bio_err == NULL)
100                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
101                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
102
103         if (!load_config(bio_err, NULL))
104                 goto end;
105
106         argc--;
107         argv++;
108         for (;;)
109                 {
110                 if (argc >= 1)
111                         {
112                         if (strcmp(*argv,"-CApath") == 0)
113                                 {
114                                 if (argc-- < 1) goto end;
115                                 CApath= *(++argv);
116                                 }
117                         else if (strcmp(*argv,"-CAfile") == 0)
118                                 {
119                                 if (argc-- < 1) goto end;
120                                 CAfile= *(++argv);
121                                 }
122                         else if (strcmp(*argv,"-purpose") == 0)
123                                 {
124                                 X509_PURPOSE *xptmp;
125                                 if (argc-- < 1) goto end;
126                                 i = X509_PURPOSE_get_by_sname(*(++argv));
127                                 if(i < 0)
128                                         {
129                                         BIO_printf(bio_err, "unrecognized purpose\n");
130                                         goto end;
131                                         }
132                                 xptmp = X509_PURPOSE_get0(i);
133                                 purpose = X509_PURPOSE_get_id(xptmp);
134                                 }
135                         else if (strcmp(*argv,"-untrusted") == 0)
136                                 {
137                                 if (argc-- < 1) goto end;
138                                 untfile= *(++argv);
139                                 }
140                         else if (strcmp(*argv,"-trusted") == 0)
141                                 {
142                                 if (argc-- < 1) goto end;
143                                 trustfile= *(++argv);
144                                 }
145                         else if (strcmp(*argv,"-engine") == 0)
146                                 {
147                                 if (--argc < 1) goto end;
148                                 engine= *(++argv);
149                                 }
150                         else if (strcmp(*argv,"-help") == 0)
151                                 goto end;
152                         else if (strcmp(*argv,"-ignore_critical") == 0)
153                                 vflags |= X509_V_FLAG_IGNORE_CRITICAL;
154                         else if (strcmp(*argv,"-issuer_checks") == 0)
155                                 vflags |= X509_V_FLAG_CB_ISSUER_CHECK;
156                         else if (strcmp(*argv,"-crl_check") == 0)
157                                 vflags |= X509_V_FLAG_CRL_CHECK;
158                         else if (strcmp(*argv,"-crl_check_all") == 0)
159                                 vflags |= X509_V_FLAG_CRL_CHECK|X509_V_FLAG_CRL_CHECK_ALL;
160                         else if (strcmp(*argv,"-verbose") == 0)
161                                 v_verbose=1;
162                         else if (argv[0][0] == '-')
163                                 goto end;
164                         else
165                                 break;
166                         argc--;
167                         argv++;
168                         }
169                 else
170                         break;
171                 }
172
173         e = setup_engine(bio_err, engine, 0);
174
175         lookup=X509_STORE_add_lookup(cert_ctx,X509_LOOKUP_file());
176         if (lookup == NULL) abort();
177         if (CAfile) {
178                 i=X509_LOOKUP_load_file(lookup,CAfile,X509_FILETYPE_PEM);
179                 if(!i) {
180                         BIO_printf(bio_err, "Error loading file %s\n", CAfile);
181                         ERR_print_errors(bio_err);
182                         goto end;
183                 }
184         } else X509_LOOKUP_load_file(lookup,NULL,X509_FILETYPE_DEFAULT);
185                 
186         lookup=X509_STORE_add_lookup(cert_ctx,X509_LOOKUP_hash_dir());
187         if (lookup == NULL) abort();
188         if (CApath) {
189                 i=X509_LOOKUP_add_dir(lookup,CApath,X509_FILETYPE_PEM);
190                 if(!i) {
191                         BIO_printf(bio_err, "Error loading directory %s\n", CApath);
192                         ERR_print_errors(bio_err);
193                         goto end;
194                 }
195         } else X509_LOOKUP_add_dir(lookup,NULL,X509_FILETYPE_DEFAULT);
196
197         ERR_clear_error();
198
199         if(untfile) {
200                 if(!(untrusted = load_untrusted(untfile))) {
201                         BIO_printf(bio_err, "Error loading untrusted file %s\n", untfile);
202                         ERR_print_errors(bio_err);
203                         goto end;
204                 }
205         }
206
207         if(trustfile) {
208                 if(!(trusted = load_untrusted(trustfile))) {
209                         BIO_printf(bio_err, "Error loading untrusted file %s\n", trustfile);
210                         ERR_print_errors(bio_err);
211                         goto end;
212                 }
213         }
214
215         if (argc < 1) check(cert_ctx, NULL, untrusted, trusted, purpose, e);
216         else
217                 for (i=0; i<argc; i++)
218                         check(cert_ctx,argv[i], untrusted, trusted, purpose, e);
219         ret=0;
220 end:
221         if (ret == 1) {
222                 BIO_printf(bio_err,"usage: verify [-verbose] [-CApath path] [-CAfile file] [-purpose purpose] [-crl_check] [-engine e] 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 (cert_ctx != NULL) X509_STORE_free(cert_ctx);
232         sk_X509_pop_free(untrusted, X509_free);
233         sk_X509_pop_free(trusted, X509_free);
234         apps_shutdown();
235         EXIT(ret);
236         }
237
238 static int check(X509_STORE *ctx, char *file, STACK_OF(X509) *uchain, STACK_OF(X509) *tchain, int purpose, ENGINE *e)
239         {
240         X509 *x=NULL;
241         int i=0,ret=0;
242         X509_STORE_CTX *csc;
243
244         x = load_cert(bio_err, file, FORMAT_PEM, NULL, e, "certificate file");
245         if (x == NULL)
246                 goto end;
247         fprintf(stdout,"%s: ",(file == NULL)?"stdin":file);
248
249         csc = X509_STORE_CTX_new();
250         if (csc == NULL)
251                 {
252                 ERR_print_errors(bio_err);
253                 goto end;
254                 }
255         X509_STORE_set_flags(ctx, vflags);
256         if(!X509_STORE_CTX_init(csc,ctx,x,uchain))
257                 {
258                 ERR_print_errors(bio_err);
259                 goto end;
260                 }
261         if(tchain) X509_STORE_CTX_trusted_stack(csc, tchain);
262         if(purpose >= 0) X509_STORE_CTX_set_purpose(csc, purpose);
263         i=X509_verify_cert(csc);
264         X509_STORE_CTX_free(csc);
265
266         ret=0;
267 end:
268         if (i)
269                 {
270                 fprintf(stdout,"OK\n");
271                 ret=1;
272                 }
273         else
274                 ERR_print_errors(bio_err);
275         if (x != NULL) X509_free(x);
276
277         return(ret);
278         }
279
280 static STACK_OF(X509) *load_untrusted(char *certfile)
281 {
282         STACK_OF(X509_INFO) *sk=NULL;
283         STACK_OF(X509) *stack=NULL, *ret=NULL;
284         BIO *in=NULL;
285         X509_INFO *xi;
286
287         if(!(stack = sk_X509_new_null())) {
288                 BIO_printf(bio_err,"memory allocation failure\n");
289                 goto end;
290         }
291
292         if(!(in=BIO_new_file(certfile, "r"))) {
293                 BIO_printf(bio_err,"error opening the file, %s\n",certfile);
294                 goto end;
295         }
296
297         /* This loads from a file, a stack of x509/crl/pkey sets */
298         if(!(sk=PEM_X509_INFO_read_bio(in,NULL,NULL,NULL))) {
299                 BIO_printf(bio_err,"error reading the file, %s\n",certfile);
300                 goto end;
301         }
302
303         /* scan over it and pull out the certs */
304         while (sk_X509_INFO_num(sk))
305                 {
306                 xi=sk_X509_INFO_shift(sk);
307                 if (xi->x509 != NULL)
308                         {
309                         sk_X509_push(stack,xi->x509);
310                         xi->x509=NULL;
311                         }
312                 X509_INFO_free(xi);
313                 }
314         if(!sk_X509_num(stack)) {
315                 BIO_printf(bio_err,"no certificates in file, %s\n",certfile);
316                 sk_X509_free(stack);
317                 goto end;
318         }
319         ret=stack;
320 end:
321         BIO_free(in);
322         sk_X509_INFO_free(sk);
323         return(ret);
324         }
325
326 static int MS_CALLBACK cb(int ok, X509_STORE_CTX *ctx)
327         {
328         char buf[256];
329
330         if (!ok)
331                 {
332                 X509_NAME_oneline(
333                                 X509_get_subject_name(ctx->current_cert),buf,256);
334                 printf("%s\n",buf);
335                 printf("error %d at %d depth lookup:%s\n",ctx->error,
336                         ctx->error_depth,
337                         X509_verify_cert_error_string(ctx->error));
338                 if (ctx->error == X509_V_ERR_CERT_HAS_EXPIRED) ok=1;
339                 /* since we are just checking the certificates, it is
340                  * ok if they are self signed. But we should still warn
341                  * the user.
342                  */
343                 if (ctx->error == X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT) ok=1;
344                 /* Continue after extension errors too */
345                 if (ctx->error == X509_V_ERR_INVALID_CA) ok=1;
346                 if (ctx->error == X509_V_ERR_PATH_LENGTH_EXCEEDED) ok=1;
347                 if (ctx->error == X509_V_ERR_INVALID_PURPOSE) ok=1;
348                 if (ctx->error == X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT) ok=1;
349                 if (ctx->error == X509_V_ERR_CRL_HAS_EXPIRED) ok=1;
350                 if (ctx->error == X509_V_ERR_CRL_NOT_YET_VALID) ok=1;
351                 if (ctx->error == X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION) ok=1;
352                 }
353         if (!v_verbose)
354                 ERR_clear_error();
355         return(ok);
356         }
357