Initialize num properly.
[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 #ifndef OPENSSL_NO_MD5
85 " -hash_old       - print old-style (MD5) hash value\n",
86 #endif
87 " -fingerprint    - print the crl fingerprint\n",
88 " -issuer         - print issuer DN\n",
89 " -lastupdate     - lastUpdate field\n",
90 " -nextupdate     - nextUpdate field\n",
91 " -crlnumber      - print CRL number\n",
92 " -noout          - no CRL output\n",
93 " -CAfile  name   - verify CRL using certificates in file \"name\"\n",
94 " -CApath  dir    - verify CRL using certificates in \"dir\"\n",
95 " -nameopt arg    - various certificate name options\n",
96 NULL
97 };
98
99 static BIO *bio_out=NULL;
100
101 int MAIN(int, char **);
102
103 int MAIN(int argc, char **argv)
104         {
105         unsigned long nmflag = 0;
106         X509_CRL *x=NULL;
107         char *CAfile = NULL, *CApath = NULL;
108         int ret=1,i,num,badops=0,badsig=0;
109         BIO *out=NULL;
110         int informat,outformat, keyformat;
111         char *infile=NULL,*outfile=NULL, *crldiff = NULL, *keyfile = NULL;
112         int hash=0,issuer=0,lastupdate=0,nextupdate=0,noout=0,text=0;
113 #ifndef OPENSSL_NO_MD5
114        int hash_old=0;
115 #endif
116         int fingerprint = 0, crlnumber = 0;
117         const char **pp;
118         X509_STORE *store = NULL;
119         X509_STORE_CTX ctx;
120         X509_LOOKUP *lookup = NULL;
121         X509_OBJECT xobj;
122         EVP_PKEY *pkey;
123         int do_ver = 0;
124         const EVP_MD *md_alg,*digest=EVP_sha1();
125
126         apps_startup();
127
128         if (bio_err == NULL)
129                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
130                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
131
132         if (!load_config(bio_err, NULL))
133                 goto end;
134
135         if (bio_out == NULL)
136                 if ((bio_out=BIO_new(BIO_s_file())) != NULL)
137                         {
138                         BIO_set_fp(bio_out,stdout,BIO_NOCLOSE);
139 #ifdef OPENSSL_SYS_VMS
140                         {
141                         BIO *tmpbio = BIO_new(BIO_f_linebuffer());
142                         bio_out = BIO_push(tmpbio, bio_out);
143                         }
144 #endif
145                         }
146
147         informat=FORMAT_PEM;
148         outformat=FORMAT_PEM;
149         keyformat=FORMAT_PEM;
150
151         argc--;
152         argv++;
153         num=0;
154         while (argc >= 1)
155                 {
156 #ifdef undef
157                 if      (strcmp(*argv,"-p") == 0)
158                         {
159                         if (--argc < 1) goto bad;
160                         if (!args_from_file(++argv,Nargc,Nargv)) { goto end; }*/
161                         }
162 #endif
163                 if      (strcmp(*argv,"-inform") == 0)
164                         {
165                         if (--argc < 1) goto bad;
166                         informat=str2fmt(*(++argv));
167                         }
168                 else if (strcmp(*argv,"-outform") == 0)
169                         {
170                         if (--argc < 1) goto bad;
171                         outformat=str2fmt(*(++argv));
172                         }
173                 else if (strcmp(*argv,"-in") == 0)
174                         {
175                         if (--argc < 1) goto bad;
176                         infile= *(++argv);
177                         }
178                 else if (strcmp(*argv,"-gendelta") == 0)
179                         {
180                         if (--argc < 1) goto bad;
181                         crldiff= *(++argv);
182                         }
183                 else if (strcmp(*argv,"-key") == 0)
184                         {
185                         if (--argc < 1) goto bad;
186                         keyfile= *(++argv);
187                         }
188                 else if (strcmp(*argv,"-keyform") == 0)
189                         {
190                         if (--argc < 1) goto bad;
191                         keyformat=str2fmt(*(++argv));
192                         }
193                 else if (strcmp(*argv,"-out") == 0)
194                         {
195                         if (--argc < 1) goto bad;
196                         outfile= *(++argv);
197                         }
198                 else if (strcmp(*argv,"-CApath") == 0)
199                         {
200                         if (--argc < 1) goto bad;
201                         CApath = *(++argv);
202                         do_ver = 1;
203                         }
204                 else if (strcmp(*argv,"-CAfile") == 0)
205                         {
206                         if (--argc < 1) goto bad;
207                         CAfile = *(++argv);
208                         do_ver = 1;
209                         }
210                 else if (strcmp(*argv,"-verify") == 0)
211                         do_ver = 1;
212                 else if (strcmp(*argv,"-text") == 0)
213                         text = 1;
214                 else if (strcmp(*argv,"-hash") == 0)
215                         hash= ++num;
216 #ifndef OPENSSL_NO_MD5
217                 else if (strcmp(*argv,"-hash_old") == 0)
218                         hash_old= ++num;
219 #endif
220                 else if (strcmp(*argv,"-nameopt") == 0)
221                         {
222                         if (--argc < 1) goto bad;
223                         if (!set_name_ex(&nmflag, *(++argv))) goto bad;
224                         }
225                 else if (strcmp(*argv,"-issuer") == 0)
226                         issuer= ++num;
227                 else if (strcmp(*argv,"-lastupdate") == 0)
228                         lastupdate= ++num;
229                 else if (strcmp(*argv,"-nextupdate") == 0)
230                         nextupdate= ++num;
231                 else if (strcmp(*argv,"-noout") == 0)
232                         noout= ++num;
233                 else if (strcmp(*argv,"-fingerprint") == 0)
234                         fingerprint= ++num;
235                 else if (strcmp(*argv,"-crlnumber") == 0)
236                         crlnumber= ++num;
237                 else if (strcmp(*argv,"-badsig") == 0)
238                         badsig = 1;
239                 else if ((md_alg=EVP_get_digestbyname(*argv + 1)))
240                         {
241                         /* ok */
242                         digest=md_alg;
243                         }
244                 else
245                         {
246                         BIO_printf(bio_err,"unknown option %s\n",*argv);
247                         badops=1;
248                         break;
249                         }
250                 argc--;
251                 argv++;
252                 }
253
254         if (badops)
255                 {
256 bad:
257                 for (pp=crl_usage; (*pp != NULL); pp++)
258                         BIO_printf(bio_err,"%s",*pp);
259                 goto end;
260                 }
261
262         ERR_load_crypto_strings();
263         x=load_crl(infile,informat);
264         if (x == NULL) { goto end; }
265
266         if(do_ver) {
267                 store = X509_STORE_new();
268                 lookup=X509_STORE_add_lookup(store,X509_LOOKUP_file());
269                 if (lookup == NULL) goto end;
270                 if (!X509_LOOKUP_load_file(lookup,CAfile,X509_FILETYPE_PEM))
271                         X509_LOOKUP_load_file(lookup,NULL,X509_FILETYPE_DEFAULT);
272                         
273                 lookup=X509_STORE_add_lookup(store,X509_LOOKUP_hash_dir());
274                 if (lookup == NULL) goto end;
275                 if (!X509_LOOKUP_add_dir(lookup,CApath,X509_FILETYPE_PEM))
276                         X509_LOOKUP_add_dir(lookup,NULL,X509_FILETYPE_DEFAULT);
277                 ERR_clear_error();
278
279                 if(!X509_STORE_CTX_init(&ctx, store, NULL, NULL)) {
280                         BIO_printf(bio_err,
281                                 "Error initialising X509 store\n");
282                         goto end;
283                 }
284
285                 i = X509_STORE_get_by_subject(&ctx, X509_LU_X509, 
286                                         X509_CRL_get_issuer(x), &xobj);
287                 if(i <= 0) {
288                         BIO_printf(bio_err,
289                                 "Error getting CRL issuer certificate\n");
290                         goto end;
291                 }
292                 pkey = X509_get_pubkey(xobj.data.x509);
293                 X509_OBJECT_free_contents(&xobj);
294                 if(!pkey) {
295                         BIO_printf(bio_err,
296                                 "Error getting CRL issuer public key\n");
297                         goto end;
298                 }
299                 i = X509_CRL_verify(x, pkey);
300                 EVP_PKEY_free(pkey);
301                 if(i < 0) goto end;
302                 if(i == 0) BIO_printf(bio_err, "verify failure\n");
303                 else BIO_printf(bio_err, "verify OK\n");
304         }
305
306         if (crldiff)
307                 {
308                 X509_CRL *newcrl, *delta;
309                 if (!keyfile)
310                         {
311                         BIO_puts(bio_err, "Missing CRL signing key\n");
312                         goto end;
313                         }
314                 newcrl = load_crl(crldiff,informat);
315                 if (!newcrl)
316                         goto end;
317                 pkey = load_key(bio_err, keyfile, keyformat, 0, NULL, NULL,
318                                         "CRL signing key");
319                 if (!pkey)
320                         {
321                         X509_CRL_free(newcrl);
322                         goto end;
323                         }       
324                 delta = X509_CRL_diff(x, newcrl, pkey, digest, 0);
325                 X509_CRL_free(newcrl);
326                 EVP_PKEY_free(pkey);
327                 if (delta)
328                         {
329                         X509_CRL_free(x);
330                         x = delta;
331                         }
332                 else
333                         {
334                         BIO_puts(bio_err, "Error creating delta CRL\n");
335                         goto end;
336                         }
337                 }
338
339         if (num)
340                 {
341                 for (i=1; i<=num; i++)
342                         {
343                         if (issuer == i)
344                                 {
345                                 print_name(bio_out, "issuer=", X509_CRL_get_issuer(x), nmflag);
346                                 }
347                         if (crlnumber == i)
348                                 {
349                                 ASN1_INTEGER *crlnum;
350                                 crlnum = X509_CRL_get_ext_d2i(x, NID_crl_number,
351                                                               NULL, NULL);
352                                 BIO_printf(bio_out,"crlNumber=");
353                                 if (crlnum)
354                                         {
355                                         i2a_ASN1_INTEGER(bio_out, crlnum);
356                                         ASN1_INTEGER_free(crlnum);
357                                         }
358                                 else
359                                         BIO_puts(bio_out, "<NONE>");
360                                 BIO_printf(bio_out,"\n");
361                                 }
362                         if (hash == i)
363                                 {
364                                 BIO_printf(bio_out,"%08lx\n",
365                                         X509_NAME_hash(X509_CRL_get_issuer(x)));
366                                 }
367 #ifndef OPENSSL_NO_MD5
368                         if (hash_old == i)
369                                 {
370                                 BIO_printf(bio_out,"%08lx\n",
371                                         X509_NAME_hash_old(
372                                                 X509_CRL_get_issuer(x)));
373                                 }
374 #endif
375                         if (lastupdate == i)
376                                 {
377                                 BIO_printf(bio_out,"lastUpdate=");
378                                 ASN1_TIME_print(bio_out,
379                                                 X509_CRL_get_lastUpdate(x));
380                                 BIO_printf(bio_out,"\n");
381                                 }
382                         if (nextupdate == i)
383                                 {
384                                 BIO_printf(bio_out,"nextUpdate=");
385                                 if (X509_CRL_get_nextUpdate(x)) 
386                                         ASN1_TIME_print(bio_out,
387                                                 X509_CRL_get_nextUpdate(x));
388                                 else
389                                         BIO_printf(bio_out,"NONE");
390                                 BIO_printf(bio_out,"\n");
391                                 }
392                         if (fingerprint == i)
393                                 {
394                                 int j;
395                                 unsigned int n;
396                                 unsigned char md[EVP_MAX_MD_SIZE];
397
398                                 if (!X509_CRL_digest(x,digest,md,&n))
399                                         {
400                                         BIO_printf(bio_err,"out of memory\n");
401                                         goto end;
402                                         }
403                                 BIO_printf(bio_out,"%s Fingerprint=",
404                                                 OBJ_nid2sn(EVP_MD_type(digest)));
405                                 for (j=0; j<(int)n; j++)
406                                         {
407                                         BIO_printf(bio_out,"%02X%c",md[j],
408                                                 (j+1 == (int)n)
409                                                 ?'\n':':');
410                                         }
411                                 }
412                         }
413                 }
414
415         out=BIO_new(BIO_s_file());
416         if (out == NULL)
417                 {
418                 ERR_print_errors(bio_err);
419                 goto end;
420                 }
421
422         if (outfile == NULL)
423                 {
424                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
425 #ifdef OPENSSL_SYS_VMS
426                 {
427                 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
428                 out = BIO_push(tmpbio, out);
429                 }
430 #endif
431                 }
432         else
433                 {
434                 if (BIO_write_filename(out,outfile) <= 0)
435                         {
436                         perror(outfile);
437                         goto end;
438                         }
439                 }
440
441         if (text) X509_CRL_print(out, x);
442
443         if (noout) 
444                 {
445                 ret = 0;
446                 goto end;
447                 }
448
449         if (badsig)
450                 x->signature->data[x->signature->length - 1] ^= 0x1;
451
452         if      (outformat == FORMAT_ASN1)
453                 i=(int)i2d_X509_CRL_bio(out,x);
454         else if (outformat == FORMAT_PEM)
455                 i=PEM_write_bio_X509_CRL(out,x);
456         else    
457                 {
458                 BIO_printf(bio_err,"bad output format specified for outfile\n");
459                 goto end;
460                 }
461         if (!i) { BIO_printf(bio_err,"unable to write CRL\n"); goto end; }
462         ret=0;
463 end:
464         if (ret != 0)
465                 ERR_print_errors(bio_err);
466         BIO_free_all(out);
467         BIO_free_all(bio_out);
468         bio_out=NULL;
469         X509_CRL_free(x);
470         if(store) {
471                 X509_STORE_CTX_cleanup(&ctx);
472                 X509_STORE_free(store);
473         }
474         apps_shutdown();
475         OPENSSL_EXIT(ret);
476         }