crl.c revision 296465 
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
75static 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
96static X509_CRL *load_crl(char *file, int format);
97static BIO *bio_out = NULL;
98
99int MAIN(int, char **);
100
101int MAIN(int argc, char **argv)
102{
103    unsigned long nmflag = 0;
104    X509_CRL *x = NULL;
105    char *CAfile = NULL, *CApath = NULL;
106    int ret = 1, i, num, badops = 0;
107    BIO *out = NULL;
108    int informat, outformat;
109    char *infile = NULL, *outfile = NULL;
110    int hash = 0, issuer = 0, lastupdate = 0, nextupdate = 0, noout =
111        0, text = 0;
112    int fingerprint = 0, crlnumber = 0;
113    const char **pp;
114    X509_STORE *store = NULL;
115    X509_STORE_CTX ctx;
116    X509_LOOKUP *lookup = NULL;
117    X509_OBJECT xobj;
118    EVP_PKEY *pkey;
119    int do_ver = 0;
120    const EVP_MD *md_alg, *digest = EVP_sha1();
121
122    apps_startup();
123
124    if (bio_err == NULL)
125        if ((bio_err = BIO_new(BIO_s_file())) != NULL)
126            BIO_set_fp(bio_err, stderr, BIO_NOCLOSE | BIO_FP_TEXT);
127
128    if (!load_config(bio_err, NULL))
129        goto end;
130
131    if (bio_out == NULL)
132        if ((bio_out = BIO_new(BIO_s_file())) != NULL) {
133            BIO_set_fp(bio_out, stdout, BIO_NOCLOSE);
134#ifdef OPENSSL_SYS_VMS
135            {
136                BIO *tmpbio = BIO_new(BIO_f_linebuffer());
137                bio_out = BIO_push(tmpbio, bio_out);
138            }
139#endif
140        }
141
142    informat = FORMAT_PEM;
143    outformat = FORMAT_PEM;
144
145    argc--;
146    argv++;
147    num = 0;
148    while (argc >= 1) {
149#ifdef undef
150        if (strcmp(*argv, "-p") == 0) {
151            if (--argc < 1)
152                goto bad;
153            if (!args_from_file(++argv, Nargc, Nargv)) {
154                goto end;
155            }
156        */}
157#endif
158        if (strcmp(*argv, "-inform") == 0) {
159            if (--argc < 1)
160                goto bad;
161            informat = str2fmt(*(++argv));
162        } else if (strcmp(*argv, "-outform") == 0) {
163            if (--argc < 1)
164                goto bad;
165            outformat = str2fmt(*(++argv));
166        } else if (strcmp(*argv, "-in") == 0) {
167            if (--argc < 1)
168                goto bad;
169            infile = *(++argv);
170        } else if (strcmp(*argv, "-out") == 0) {
171            if (--argc < 1)
172                goto bad;
173            outfile = *(++argv);
174        } else if (strcmp(*argv, "-CApath") == 0) {
175            if (--argc < 1)
176                goto bad;
177            CApath = *(++argv);
178            do_ver = 1;
179        } else if (strcmp(*argv, "-CAfile") == 0) {
180            if (--argc < 1)
181                goto bad;
182            CAfile = *(++argv);
183            do_ver = 1;
184        } else if (strcmp(*argv, "-verify") == 0)
185            do_ver = 1;
186        else if (strcmp(*argv, "-text") == 0)
187            text = 1;
188        else if (strcmp(*argv, "-hash") == 0)
189            hash = ++num;
190        else if (strcmp(*argv, "-nameopt") == 0) {
191            if (--argc < 1)
192                goto bad;
193            if (!set_name_ex(&nmflag, *(++argv)))
194                goto bad;
195        } else if (strcmp(*argv, "-issuer") == 0)
196            issuer = ++num;
197        else if (strcmp(*argv, "-lastupdate") == 0)
198            lastupdate = ++num;
199        else if (strcmp(*argv, "-nextupdate") == 0)
200            nextupdate = ++num;
201        else if (strcmp(*argv, "-noout") == 0)
202            noout = ++num;
203        else if (strcmp(*argv, "-fingerprint") == 0)
204            fingerprint = ++num;
205        else if (strcmp(*argv, "-crlnumber") == 0)
206            crlnumber = ++num;
207        else if ((md_alg = EVP_get_digestbyname(*argv + 1))) {
208            /* ok */
209            digest = md_alg;
210        } else {
211            BIO_printf(bio_err, "unknown option %s\n", *argv);
212            badops = 1;
213            break;
214        }
215        argc--;
216        argv++;
217    }
218
219    if (badops) {
220 bad:
221        for (pp = crl_usage; (*pp != NULL); pp++)
222            BIO_printf(bio_err, "%s", *pp);
223        goto end;
224    }
225
226    ERR_load_crypto_strings();
227    x = load_crl(infile, informat);
228    if (x == NULL) {
229        goto end;
230    }
231
232    if (do_ver) {
233        store = X509_STORE_new();
234        lookup = X509_STORE_add_lookup(store, X509_LOOKUP_file());
235        if (lookup == NULL)
236            goto end;
237        if (!X509_LOOKUP_load_file(lookup, CAfile, X509_FILETYPE_PEM))
238            X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
239
240        lookup = X509_STORE_add_lookup(store, X509_LOOKUP_hash_dir());
241        if (lookup == NULL)
242            goto end;
243        if (!X509_LOOKUP_add_dir(lookup, CApath, X509_FILETYPE_PEM))
244            X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
245        ERR_clear_error();
246
247        if (!X509_STORE_CTX_init(&ctx, store, NULL, NULL)) {
248            BIO_printf(bio_err, "Error initialising X509 store\n");
249            goto end;
250        }
251
252        i = X509_STORE_get_by_subject(&ctx, X509_LU_X509,
253                                      X509_CRL_get_issuer(x), &xobj);
254        if (i <= 0) {
255            BIO_printf(bio_err, "Error getting CRL issuer certificate\n");
256            goto end;
257        }
258        pkey = X509_get_pubkey(xobj.data.x509);
259        X509_OBJECT_free_contents(&xobj);
260        if (!pkey) {
261            BIO_printf(bio_err, "Error getting CRL issuer public key\n");
262            goto end;
263        }
264        i = X509_CRL_verify(x, pkey);
265        EVP_PKEY_free(pkey);
266        if (i < 0)
267            goto end;
268        if (i == 0)
269            BIO_printf(bio_err, "verify failure\n");
270        else
271            BIO_printf(bio_err, "verify OK\n");
272    }
273
274    if (num) {
275        for (i = 1; i <= num; i++) {
276            if (issuer == i) {
277                print_name(bio_out, "issuer=", X509_CRL_get_issuer(x),
278                           nmflag);
279            }
280            if (crlnumber == i) {
281                ASN1_INTEGER *crlnum;
282                crlnum = X509_CRL_get_ext_d2i(x, NID_crl_number, NULL, NULL);
283                BIO_printf(bio_out, "crlNumber=");
284                if (crlnum) {
285                    i2a_ASN1_INTEGER(bio_out, crlnum);
286                    ASN1_INTEGER_free(crlnum);
287                } else
288                    BIO_puts(bio_out, "<NONE>");
289                BIO_printf(bio_out, "\n");
290            }
291            if (hash == i) {
292                BIO_printf(bio_out, "%08lx\n",
293                           X509_NAME_hash(X509_CRL_get_issuer(x)));
294            }
295            if (lastupdate == i) {
296                BIO_printf(bio_out, "lastUpdate=");
297                ASN1_TIME_print(bio_out, X509_CRL_get_lastUpdate(x));
298                BIO_printf(bio_out, "\n");
299            }
300            if (nextupdate == i) {
301                BIO_printf(bio_out, "nextUpdate=");
302                if (X509_CRL_get_nextUpdate(x))
303                    ASN1_TIME_print(bio_out, X509_CRL_get_nextUpdate(x));
304                else
305                    BIO_printf(bio_out, "NONE");
306                BIO_printf(bio_out, "\n");
307            }
308            if (fingerprint == i) {
309                int j;
310                unsigned int n;
311                unsigned char md[EVP_MAX_MD_SIZE];
312
313                if (!X509_CRL_digest(x, digest, md, &n)) {
314                    BIO_printf(bio_err, "out of memory\n");
315                    goto end;
316                }
317                BIO_printf(bio_out, "%s Fingerprint=",
318                           OBJ_nid2sn(EVP_MD_type(digest)));
319                for (j = 0; j < (int)n; j++) {
320                    BIO_printf(bio_out, "%02X%c", md[j], (j + 1 == (int)n)
321                               ? '\n' : ':');
322                }
323            }
324        }
325    }
326
327    out = BIO_new(BIO_s_file());
328    if (out == NULL) {
329        ERR_print_errors(bio_err);
330        goto end;
331    }
332
333    if (outfile == NULL) {
334        BIO_set_fp(out, stdout, BIO_NOCLOSE);
335#ifdef OPENSSL_SYS_VMS
336        {
337            BIO *tmpbio = BIO_new(BIO_f_linebuffer());
338            out = BIO_push(tmpbio, out);
339        }
340#endif
341    } else {
342        if (BIO_write_filename(out, outfile) <= 0) {
343            perror(outfile);
344            goto end;
345        }
346    }
347
348    if (text)
349        X509_CRL_print(out, x);
350
351    if (noout) {
352        ret = 0;
353        goto end;
354    }
355
356    if (outformat == FORMAT_ASN1)
357        i = (int)i2d_X509_CRL_bio(out, x);
358    else if (outformat == FORMAT_PEM)
359        i = PEM_write_bio_X509_CRL(out, x);
360    else {
361        BIO_printf(bio_err, "bad output format specified for outfile\n");
362        goto end;
363    }
364    if (!i) {
365        BIO_printf(bio_err, "unable to write CRL\n");
366        goto end;
367    }
368    ret = 0;
369 end:
370    BIO_free_all(out);
371    BIO_free_all(bio_out);
372    bio_out = NULL;
373    X509_CRL_free(x);
374    if (store) {
375        X509_STORE_CTX_cleanup(&ctx);
376        X509_STORE_free(store);
377    }
378    apps_shutdown();
379    OPENSSL_EXIT(ret);
380}
381
382static X509_CRL *load_crl(char *infile, int format)
383{
384    X509_CRL *x = NULL;
385    BIO *in = NULL;
386
387    in = BIO_new(BIO_s_file());
388    if (in == NULL) {
389        ERR_print_errors(bio_err);
390        goto end;
391    }
392
393    if (infile == NULL)
394        BIO_set_fp(in, stdin, BIO_NOCLOSE);
395    else {
396        if (BIO_read_filename(in, infile) <= 0) {
397            perror(infile);
398            goto end;
399        }
400    }
401    if (format == FORMAT_ASN1)
402        x = d2i_X509_CRL_bio(in, NULL);
403    else if (format == FORMAT_PEM)
404        x = PEM_read_bio_X509_CRL(in, NULL, NULL, NULL);
405    else {
406        BIO_printf(bio_err, "bad input format specified for input crl\n");
407        goto end;
408    }
409    if (x == NULL) {
410        BIO_printf(bio_err, "unable to load CRL\n");
411        ERR_print_errors(bio_err);
412        goto end;
413    }
414
415 end:
416    BIO_free(in);
417    return (x);
418}
419