update FAQ
[openssl.git] / apps / crl.c
1 /* apps/crl.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    crl_main
71
72 #undef POSTFIX
73 #define POSTFIX ".rvk"
74
75 static const char *crl_usage[]={
76 "usage: crl args\n",
77 "\n",
78 " -inform arg     - input format - default PEM (DER or PEM)\n",
79 " -outform arg    - output format - default PEM\n",
80 " -text           - print out a text format version\n",
81 " -in arg         - input file - default stdin\n",
82 " -out arg        - output file - default stdout\n",
83 " -hash           - print hash value\n",
84 " -fingerprint    - print the crl fingerprint\n",
85 " -issuer         - print issuer DN\n",
86 " -lastupdate     - lastUpdate field\n",
87 " -nextupdate     - nextUpdate field\n",
88 " -crlnumber      - print CRL number\n",
89 " -noout          - no CRL output\n",
90 " -CAfile  name   - verify CRL using certificates in file \"name\"\n",
91 " -CApath  dir    - verify CRL using certificates in \"dir\"\n",
92 " -nameopt arg    - various certificate name options\n",
93 NULL
94 };
95
96 static BIO *bio_out=NULL;
97
98 int MAIN(int, char **);
99
100 int MAIN(int argc, char **argv)
101         {
102         unsigned long nmflag = 0;
103         X509_CRL *x=NULL;
104         char *CAfile = NULL, *CApath = NULL;
105         int ret=1,i,num,badops=0,badsig=0;
106         BIO *out=NULL;
107         int informat,outformat, keyformat;
108         char *infile=NULL,*outfile=NULL, *crldiff = NULL, *keyfile = NULL;
109         int hash=0,issuer=0,lastupdate=0,nextupdate=0,noout=0,text=0;
110         int fingerprint = 0, crlnumber = 0;
111         const char **pp;
112         X509_STORE *store = NULL;
113         X509_STORE_CTX ctx;
114         X509_LOOKUP *lookup = NULL;
115         X509_OBJECT xobj;
116         EVP_PKEY *pkey;
117         int do_ver = 0;
118         const EVP_MD *md_alg,*digest=EVP_sha1();
119
120         apps_startup();
121
122         if (bio_err == NULL)
123                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
124                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
125
126         if (!load_config(bio_err, NULL))
127                 goto end;
128
129         if (bio_out == NULL)
130                 if ((bio_out=BIO_new(BIO_s_file())) != NULL)
131                         {
132                         BIO_set_fp(bio_out,stdout,BIO_NOCLOSE);
133 #ifdef OPENSSL_SYS_VMS
134                         {
135                         BIO *tmpbio = BIO_new(BIO_f_linebuffer());
136                         bio_out = BIO_push(tmpbio, bio_out);
137                         }
138 #endif
139                         }
140
141         informat=FORMAT_PEM;
142         outformat=FORMAT_PEM;
143         keyformat=FORMAT_PEM;
144
145         argc--;
146         argv++;
147         num=0;
148         while (argc >= 1)
149                 {
150 #ifdef undef
151                 if      (strcmp(*argv,"-p") == 0)
152                         {
153                         if (--argc < 1) goto bad;
154                         if (!args_from_file(++argv,Nargc,Nargv)) { goto end; }*/
155                         }
156 #endif
157                 if      (strcmp(*argv,"-inform") == 0)
158                         {
159                         if (--argc < 1) goto bad;
160                         informat=str2fmt(*(++argv));
161                         }
162                 else if (strcmp(*argv,"-outform") == 0)
163                         {
164                         if (--argc < 1) goto bad;
165                         outformat=str2fmt(*(++argv));
166                         }
167                 else if (strcmp(*argv,"-in") == 0)
168                         {
169                         if (--argc < 1) goto bad;
170                         infile= *(++argv);
171                         }
172                 else if (strcmp(*argv,"-gendelta") == 0)
173                         {
174                         if (--argc < 1) goto bad;
175                         crldiff= *(++argv);
176                         }
177                 else if (strcmp(*argv,"-key") == 0)
178                         {
179                         if (--argc < 1) goto bad;
180                         keyfile= *(++argv);
181                         }
182                 else if (strcmp(*argv,"-keyform") == 0)
183                         {
184                         if (--argc < 1) goto bad;
185                         keyformat=str2fmt(*(++argv));
186                         }
187                 else if (strcmp(*argv,"-out") == 0)
188                         {
189                         if (--argc < 1) goto bad;
190                         outfile= *(++argv);
191                         }
192                 else if (strcmp(*argv,"-CApath") == 0)
193                         {
194                         if (--argc < 1) goto bad;
195                         CApath = *(++argv);
196                         do_ver = 1;
197                         }
198                 else if (strcmp(*argv,"-CAfile") == 0)
199                         {
200                         if (--argc < 1) goto bad;
201                         CAfile = *(++argv);
202                         do_ver = 1;
203                         }
204                 else if (strcmp(*argv,"-verify") == 0)
205                         do_ver = 1;
206                 else if (strcmp(*argv,"-text") == 0)
207                         text = 1;
208                 else if (strcmp(*argv,"-hash") == 0)
209                         hash= ++num;
210                 else if (strcmp(*argv,"-nameopt") == 0)
211                         {
212                         if (--argc < 1) goto bad;
213                         if (!set_name_ex(&nmflag, *(++argv))) goto bad;
214                         }
215                 else if (strcmp(*argv,"-issuer") == 0)
216                         issuer= ++num;
217                 else if (strcmp(*argv,"-lastupdate") == 0)
218                         lastupdate= ++num;
219                 else if (strcmp(*argv,"-nextupdate") == 0)
220                         nextupdate= ++num;
221                 else if (strcmp(*argv,"-noout") == 0)
222                         noout= ++num;
223                 else if (strcmp(*argv,"-fingerprint") == 0)
224                         fingerprint= ++num;
225                 else if (strcmp(*argv,"-crlnumber") == 0)
226                         crlnumber= ++num;
227                 else if (strcmp(*argv,"-badsig") == 0)
228                         badsig = 1;
229                 else if ((md_alg=EVP_get_digestbyname(*argv + 1)))
230                         {
231                         /* ok */
232                         digest=md_alg;
233                         }
234                 else
235                         {
236                         BIO_printf(bio_err,"unknown option %s\n",*argv);
237                         badops=1;
238                         break;
239                         }
240                 argc--;
241                 argv++;
242                 }
243
244         if (badops)
245                 {
246 bad:
247                 for (pp=crl_usage; (*pp != NULL); pp++)
248                         BIO_printf(bio_err,"%s",*pp);
249                 goto end;
250                 }
251
252         ERR_load_crypto_strings();
253         x=load_crl(infile,informat);
254         if (x == NULL) { goto end; }
255
256         if(do_ver) {
257                 store = X509_STORE_new();
258                 lookup=X509_STORE_add_lookup(store,X509_LOOKUP_file());
259                 if (lookup == NULL) goto end;
260                 if (!X509_LOOKUP_load_file(lookup,CAfile,X509_FILETYPE_PEM))
261                         X509_LOOKUP_load_file(lookup,NULL,X509_FILETYPE_DEFAULT);
262                         
263                 lookup=X509_STORE_add_lookup(store,X509_LOOKUP_hash_dir());
264                 if (lookup == NULL) goto end;
265                 if (!X509_LOOKUP_add_dir(lookup,CApath,X509_FILETYPE_PEM))
266                         X509_LOOKUP_add_dir(lookup,NULL,X509_FILETYPE_DEFAULT);
267                 ERR_clear_error();
268
269                 if(!X509_STORE_CTX_init(&ctx, store, NULL, NULL)) {
270                         BIO_printf(bio_err,
271                                 "Error initialising X509 store\n");
272                         goto end;
273                 }
274
275                 i = X509_STORE_get_by_subject(&ctx, X509_LU_X509, 
276                                         X509_CRL_get_issuer(x), &xobj);
277                 if(i <= 0) {
278                         BIO_printf(bio_err,
279                                 "Error getting CRL issuer certificate\n");
280                         goto end;
281                 }
282                 pkey = X509_get_pubkey(xobj.data.x509);
283                 X509_OBJECT_free_contents(&xobj);
284                 if(!pkey) {
285                         BIO_printf(bio_err,
286                                 "Error getting CRL issuer public key\n");
287                         goto end;
288                 }
289                 i = X509_CRL_verify(x, pkey);
290                 EVP_PKEY_free(pkey);
291                 if(i < 0) goto end;
292                 if(i == 0) BIO_printf(bio_err, "verify failure\n");
293                 else BIO_printf(bio_err, "verify OK\n");
294         }
295
296         if (crldiff)
297                 {
298                 X509_CRL *newcrl, *delta;
299                 if (!keyfile)
300                         {
301                         BIO_puts(bio_err, "Missing CRL signing key\n");
302                         goto end;
303                         }
304                 newcrl = load_crl(crldiff,informat);
305                 if (!newcrl)
306                         goto end;
307                 pkey = load_key(bio_err, keyfile, keyformat, 0, NULL, NULL,
308                                         "CRL signing key");
309                 if (!pkey)
310                         {
311                         X509_CRL_free(newcrl);
312                         goto end;
313                         }       
314                 delta = X509_CRL_diff(x, newcrl, pkey, digest, 0);
315                 X509_CRL_free(newcrl);
316                 EVP_PKEY_free(pkey);
317                 if (delta)
318                         {
319                         X509_CRL_free(x);
320                         x = delta;
321                         }
322                 else
323                         {
324                         BIO_puts(bio_err, "Error creating delta CRL\n");
325                         goto end;
326                         }
327                 }
328
329         if (num)
330                 {
331                 for (i=1; i<=num; i++)
332                         {
333                         if (issuer == i)
334                                 {
335                                 print_name(bio_out, "issuer=", X509_CRL_get_issuer(x), nmflag);
336                                 }
337                         if (crlnumber == i)
338                                 {
339                                 ASN1_INTEGER *crlnum;
340                                 crlnum = X509_CRL_get_ext_d2i(x, NID_crl_number,
341                                                               NULL, NULL);
342                                 BIO_printf(bio_out,"crlNumber=");
343                                 if (crlnum)
344                                         {
345                                         i2a_ASN1_INTEGER(bio_out, crlnum);
346                                         ASN1_INTEGER_free(crlnum);
347                                         }
348                                 else
349                                         BIO_puts(bio_out, "<NONE>");
350                                 BIO_printf(bio_out,"\n");
351                                 }
352                         if (hash == i)
353                                 {
354                                 BIO_printf(bio_out,"%08lx\n",
355                                         X509_NAME_hash(X509_CRL_get_issuer(x)));
356                                 }
357                         if (lastupdate == i)
358                                 {
359                                 BIO_printf(bio_out,"lastUpdate=");
360                                 ASN1_TIME_print(bio_out,
361                                                 X509_CRL_get_lastUpdate(x));
362                                 BIO_printf(bio_out,"\n");
363                                 }
364                         if (nextupdate == i)
365                                 {
366                                 BIO_printf(bio_out,"nextUpdate=");
367                                 if (X509_CRL_get_nextUpdate(x)) 
368                                         ASN1_TIME_print(bio_out,
369                                                 X509_CRL_get_nextUpdate(x));
370                                 else
371                                         BIO_printf(bio_out,"NONE");
372                                 BIO_printf(bio_out,"\n");
373                                 }
374                         if (fingerprint == i)
375                                 {
376                                 int j;
377                                 unsigned int n;
378                                 unsigned char md[EVP_MAX_MD_SIZE];
379
380                                 if (!X509_CRL_digest(x,digest,md,&n))
381                                         {
382                                         BIO_printf(bio_err,"out of memory\n");
383                                         goto end;
384                                         }
385                                 BIO_printf(bio_out,"%s Fingerprint=",
386                                                 OBJ_nid2sn(EVP_MD_type(digest)));
387                                 for (j=0; j<(int)n; j++)
388                                         {
389                                         BIO_printf(bio_out,"%02X%c",md[j],
390                                                 (j+1 == (int)n)
391                                                 ?'\n':':');
392                                         }
393                                 }
394                         }
395                 }
396
397         out=BIO_new(BIO_s_file());
398         if (out == NULL)
399                 {
400                 ERR_print_errors(bio_err);
401                 goto end;
402                 }
403
404         if (outfile == NULL)
405                 {
406                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
407 #ifdef OPENSSL_SYS_VMS
408                 {
409                 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
410                 out = BIO_push(tmpbio, out);
411                 }
412 #endif
413                 }
414         else
415                 {
416                 if (BIO_write_filename(out,outfile) <= 0)
417                         {
418                         perror(outfile);
419                         goto end;
420                         }
421                 }
422
423         if (text) X509_CRL_print(out, x);
424
425         if (noout) 
426                 {
427                 ret = 0;
428                 goto end;
429                 }
430
431         if (badsig)
432                 x->signature->data[x->signature->length - 1] ^= 0x1;
433
434         if      (outformat == FORMAT_ASN1)
435                 i=(int)i2d_X509_CRL_bio(out,x);
436         else if (outformat == FORMAT_PEM)
437                 i=PEM_write_bio_X509_CRL(out,x);
438         else    
439                 {
440                 BIO_printf(bio_err,"bad output format specified for outfile\n");
441                 goto end;
442                 }
443         if (!i) { BIO_printf(bio_err,"unable to write CRL\n"); goto end; }
444         ret=0;
445 end:
446         if (ret != 0)
447                 ERR_print_errors(bio_err);
448         BIO_free_all(out);
449         BIO_free_all(bio_out);
450         bio_out=NULL;
451         X509_CRL_free(x);
452         if(store) {
453                 X509_STORE_CTX_cleanup(&ctx);
454                 X509_STORE_free(store);
455         }
456         apps_shutdown();
457         OPENSSL_EXIT(ret);
458         }