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