xref: /openssl/apps/crl.c (revision 496bc128)
1 /*
2  * Copyright 1995-2024 The OpenSSL Project Authors. All Rights Reserved.
3  *
4  * Licensed under the Apache License 2.0 (the "License").  You may not use
5  * this file except in compliance with the License.  You can obtain a copy
6  * in the file LICENSE in the source distribution or at
7  * https://www.openssl.org/source/license.html
8  */
9 
10 #include <stdio.h>
11 #include <stdlib.h>
12 #include <string.h>
13 #include "apps.h"
14 #include "progs.h"
15 #include <openssl/bio.h>
16 #include <openssl/err.h>
17 #include <openssl/x509.h>
18 #include <openssl/x509v3.h>
19 #include <openssl/pem.h>
20 
21 typedef enum OPTION_choice {
22     OPT_COMMON,
23     OPT_INFORM, OPT_IN, OPT_OUTFORM, OPT_OUT, OPT_KEYFORM, OPT_KEY,
24     OPT_ISSUER, OPT_LASTUPDATE, OPT_NEXTUPDATE, OPT_FINGERPRINT,
25     OPT_CRLNUMBER, OPT_BADSIG, OPT_GENDELTA, OPT_CAPATH, OPT_CAFILE, OPT_CASTORE,
26     OPT_NOCAPATH, OPT_NOCAFILE, OPT_NOCASTORE, OPT_VERIFY, OPT_DATEOPT, OPT_TEXT, OPT_HASH,
27     OPT_HASH_OLD, OPT_NOOUT, OPT_NAMEOPT, OPT_MD, OPT_PROV_ENUM
28 } OPTION_CHOICE;
29 
30 const OPTIONS crl_options[] = {
31     OPT_SECTION("General"),
32     {"help", OPT_HELP, '-', "Display this summary"},
33     {"verify", OPT_VERIFY, '-', "Verify CRL signature"},
34 
35     OPT_SECTION("Input"),
36     {"in", OPT_IN, '<', "Input file - default stdin"},
37     {"inform", OPT_INFORM, 'F', "CRL input format (DER or PEM); has no effect"},
38     {"key", OPT_KEY, '<', "CRL signing Private key to use"},
39     {"keyform", OPT_KEYFORM, 'F', "Private key file format (DER/PEM/P12); has no effect"},
40 
41     OPT_SECTION("Output"),
42     {"out", OPT_OUT, '>', "output file - default stdout"},
43     {"outform", OPT_OUTFORM, 'F', "Output format - default PEM"},
44     {"dateopt", OPT_DATEOPT, 's', "Datetime format used for printing. (rfc_822/iso_8601). Default is rfc_822."},
45     {"text", OPT_TEXT, '-', "Print out a text format version"},
46     {"hash", OPT_HASH, '-', "Print hash value"},
47 #ifndef OPENSSL_NO_MD5
48     {"hash_old", OPT_HASH_OLD, '-', "Print old-style (MD5) hash value"},
49 #endif
50     {"nameopt", OPT_NAMEOPT, 's', "Certificate subject/issuer name printing options"},
51     {"", OPT_MD, '-', "Any supported digest"},
52 
53     OPT_SECTION("CRL"),
54     {"issuer", OPT_ISSUER, '-', "Print issuer DN"},
55     {"lastupdate", OPT_LASTUPDATE, '-', "Set lastUpdate field"},
56     {"nextupdate", OPT_NEXTUPDATE, '-', "Set nextUpdate field"},
57     {"noout", OPT_NOOUT, '-', "No CRL output"},
58     {"fingerprint", OPT_FINGERPRINT, '-', "Print the crl fingerprint"},
59     {"crlnumber", OPT_CRLNUMBER, '-', "Print CRL number"},
60     {"badsig", OPT_BADSIG, '-', "Corrupt last byte of loaded CRL signature (for test)" },
61     {"gendelta", OPT_GENDELTA, '<', "Other CRL to compare/diff to the Input one"},
62 
63     OPT_SECTION("Certificate"),
64     {"CApath", OPT_CAPATH, '/', "Verify CRL using certificates in dir"},
65     {"CAfile", OPT_CAFILE, '<', "Verify CRL using certificates in file name"},
66     {"CAstore", OPT_CASTORE, ':', "Verify CRL using certificates in store URI"},
67     {"no-CAfile", OPT_NOCAFILE, '-',
68      "Do not load the default certificates file"},
69     {"no-CApath", OPT_NOCAPATH, '-',
70      "Do not load certificates from the default certificates directory"},
71     {"no-CAstore", OPT_NOCASTORE, '-',
72      "Do not load certificates from the default certificates store"},
73     OPT_PROV_OPTIONS,
74     {NULL}
75 };
76 
crl_main(int argc,char ** argv)77 int crl_main(int argc, char **argv)
78 {
79     X509_CRL *x = NULL;
80     BIO *out = NULL;
81     X509_STORE *store = NULL;
82     X509_STORE_CTX *ctx = NULL;
83     X509_LOOKUP *lookup = NULL;
84     X509_OBJECT *xobj = NULL;
85     EVP_PKEY *pkey;
86     EVP_MD *digest = (EVP_MD *)EVP_sha1();
87     char *infile = NULL, *outfile = NULL, *crldiff = NULL, *keyfile = NULL;
88     char *digestname = NULL;
89     const char *CAfile = NULL, *CApath = NULL, *CAstore = NULL, *prog;
90     OPTION_CHOICE o;
91     int hash = 0, issuer = 0, lastupdate = 0, nextupdate = 0, noout = 0;
92     int informat = FORMAT_UNDEF, outformat = FORMAT_PEM, keyformat = FORMAT_UNDEF;
93     int ret = 1, num = 0, badsig = 0, fingerprint = 0, crlnumber = 0;
94     int text = 0, do_ver = 0, noCAfile = 0, noCApath = 0, noCAstore = 0;
95     unsigned long dateopt = ASN1_DTFLGS_RFC822;
96     int i;
97 #ifndef OPENSSL_NO_MD5
98     int hash_old = 0;
99 #endif
100 
101     opt_set_unknown_name("digest");
102     prog = opt_init(argc, argv, crl_options);
103     while ((o = opt_next()) != OPT_EOF) {
104         switch (o) {
105         case OPT_EOF:
106         case OPT_ERR:
107  opthelp:
108             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
109             goto end;
110         case OPT_HELP:
111             opt_help(crl_options);
112             ret = 0;
113             goto end;
114         case OPT_INFORM:
115             if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &informat))
116                 goto opthelp;
117             break;
118         case OPT_IN:
119             infile = opt_arg();
120             break;
121         case OPT_OUTFORM:
122             if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &outformat))
123                 goto opthelp;
124             break;
125         case OPT_OUT:
126             outfile = opt_arg();
127             break;
128         case OPT_KEYFORM:
129             if (!opt_format(opt_arg(), OPT_FMT_ANY, &keyformat))
130                 goto opthelp;
131             break;
132         case OPT_KEY:
133             keyfile = opt_arg();
134             break;
135         case OPT_GENDELTA:
136             crldiff = opt_arg();
137             break;
138         case OPT_CAPATH:
139             CApath = opt_arg();
140             do_ver = 1;
141             break;
142         case OPT_CAFILE:
143             CAfile = opt_arg();
144             do_ver = 1;
145             break;
146         case OPT_CASTORE:
147             CAstore = opt_arg();
148             do_ver = 1;
149             break;
150         case OPT_NOCAPATH:
151             noCApath =  1;
152             break;
153         case OPT_NOCAFILE:
154             noCAfile =  1;
155             break;
156         case OPT_NOCASTORE:
157             noCAstore =  1;
158             break;
159         case OPT_HASH_OLD:
160 #ifndef OPENSSL_NO_MD5
161             hash_old = ++num;
162 #endif
163             break;
164         case OPT_VERIFY:
165             do_ver = 1;
166             break;
167         case OPT_DATEOPT:
168             if (!set_dateopt(&dateopt, opt_arg()))
169                 goto opthelp;
170             break;
171         case OPT_TEXT:
172             text = 1;
173             break;
174         case OPT_HASH:
175             hash = ++num;
176             break;
177         case OPT_ISSUER:
178             issuer = ++num;
179             break;
180         case OPT_LASTUPDATE:
181             lastupdate = ++num;
182             break;
183         case OPT_NEXTUPDATE:
184             nextupdate = ++num;
185             break;
186         case OPT_NOOUT:
187             noout = 1;
188             break;
189         case OPT_FINGERPRINT:
190             fingerprint = ++num;
191             break;
192         case OPT_CRLNUMBER:
193             crlnumber = ++num;
194             break;
195         case OPT_BADSIG:
196             badsig = 1;
197             break;
198         case OPT_NAMEOPT:
199             if (!set_nameopt(opt_arg()))
200                 goto opthelp;
201             break;
202         case OPT_MD:
203             digestname = opt_unknown();
204             break;
205         case OPT_PROV_CASES:
206             if (!opt_provider(o))
207                 goto end;
208             break;
209         }
210     }
211 
212     /* No remaining args. */
213     if (!opt_check_rest_arg(NULL))
214         goto opthelp;
215 
216     if (!opt_md(digestname, &digest))
217         goto opthelp;
218     x = load_crl(infile, informat, 1, "CRL");
219     if (x == NULL)
220         goto end;
221 
222     if (do_ver) {
223         if ((store = setup_verify(CAfile, noCAfile, CApath, noCApath,
224                                   CAstore, noCAstore)) == NULL)
225             goto end;
226         lookup = X509_STORE_add_lookup(store, X509_LOOKUP_file());
227         if (lookup == NULL)
228             goto end;
229         ctx = X509_STORE_CTX_new();
230         if (ctx == NULL || !X509_STORE_CTX_init(ctx, store, NULL, NULL)) {
231             BIO_printf(bio_err, "Error initialising X509 store\n");
232             goto end;
233         }
234 
235         xobj = X509_STORE_CTX_get_obj_by_subject(ctx, X509_LU_X509,
236                                                  X509_CRL_get_issuer(x));
237         if (xobj == NULL) {
238             BIO_printf(bio_err, "Error getting CRL issuer certificate\n");
239             goto end;
240         }
241         pkey = X509_get_pubkey(X509_OBJECT_get0_X509(xobj));
242         X509_OBJECT_free(xobj);
243         if (pkey == NULL) {
244             BIO_printf(bio_err, "Error getting CRL issuer public key\n");
245             goto end;
246         }
247         i = X509_CRL_verify(x, pkey);
248         EVP_PKEY_free(pkey);
249         if (i < 0)
250             goto end;
251         if (i == 0) {
252             BIO_printf(bio_err, "verify failure\n");
253 	    goto end;
254         } else
255             BIO_printf(bio_err, "verify OK\n");
256     }
257 
258     if (crldiff != NULL) {
259         X509_CRL *newcrl, *delta;
260         if (!keyfile) {
261             BIO_puts(bio_err, "Missing CRL signing key\n");
262             goto end;
263         }
264         newcrl = load_crl(crldiff, informat, 0, "other CRL");
265         if (!newcrl)
266             goto end;
267         pkey = load_key(keyfile, keyformat, 0, NULL, NULL, "CRL signing key");
268         if (pkey == NULL) {
269             X509_CRL_free(newcrl);
270             goto end;
271         }
272         delta = X509_CRL_diff(x, newcrl, pkey, digest, 0);
273         X509_CRL_free(newcrl);
274         EVP_PKEY_free(pkey);
275         if (delta) {
276             X509_CRL_free(x);
277             x = delta;
278         } else {
279             BIO_puts(bio_err, "Error creating delta CRL\n");
280             goto end;
281         }
282     }
283 
284     if (badsig) {
285         const ASN1_BIT_STRING *sig;
286 
287         X509_CRL_get0_signature(x, &sig, NULL);
288         corrupt_signature(sig);
289     }
290 
291     if (num) {
292         for (i = 1; i <= num; i++) {
293             if (issuer == i) {
294                 print_name(bio_out, "issuer=", X509_CRL_get_issuer(x));
295             }
296             if (crlnumber == i) {
297                 ASN1_INTEGER *crlnum;
298 
299                 crlnum = X509_CRL_get_ext_d2i(x, NID_crl_number, NULL, NULL);
300                 BIO_printf(bio_out, "crlNumber=");
301                 if (crlnum) {
302                     BIO_puts(bio_out, "0x");
303                     i2a_ASN1_INTEGER(bio_out, crlnum);
304                     ASN1_INTEGER_free(crlnum);
305                 } else {
306                     BIO_puts(bio_out, "<NONE>");
307                 }
308                 BIO_printf(bio_out, "\n");
309             }
310             if (hash == i) {
311                 int ok;
312                 unsigned long hash_value =
313                     X509_NAME_hash_ex(X509_CRL_get_issuer(x), app_get0_libctx(),
314                                       app_get0_propq(), &ok);
315 
316                 if (num > 1)
317                     BIO_printf(bio_out, "issuer name hash=");
318                 if (ok) {
319                     BIO_printf(bio_out, "%08lx\n", hash_value);
320                 } else {
321                     BIO_puts(bio_out, "<ERROR>");
322                     goto end;
323                 }
324             }
325 #ifndef OPENSSL_NO_MD5
326             if (hash_old == i) {
327                 if (num > 1)
328                     BIO_printf(bio_out, "issuer name old hash=");
329                 BIO_printf(bio_out, "%08lx\n",
330                            X509_NAME_hash_old(X509_CRL_get_issuer(x)));
331             }
332 #endif
333             if (lastupdate == i) {
334                 BIO_printf(bio_out, "lastUpdate=");
335                 ASN1_TIME_print_ex(bio_out, X509_CRL_get0_lastUpdate(x), dateopt);
336                 BIO_printf(bio_out, "\n");
337             }
338             if (nextupdate == i) {
339                 BIO_printf(bio_out, "nextUpdate=");
340                 if (X509_CRL_get0_nextUpdate(x))
341                     ASN1_TIME_print_ex(bio_out, X509_CRL_get0_nextUpdate(x), dateopt);
342                 else
343                     BIO_printf(bio_out, "NONE");
344                 BIO_printf(bio_out, "\n");
345             }
346             if (fingerprint == i) {
347                 int j;
348                 unsigned int n;
349                 unsigned char md[EVP_MAX_MD_SIZE];
350 
351                 if (!X509_CRL_digest(x, digest, md, &n)) {
352                     BIO_printf(bio_err, "out of memory\n");
353                     goto end;
354                 }
355                 BIO_printf(bio_out, "%s Fingerprint=",
356                            EVP_MD_get0_name(digest));
357                 for (j = 0; j < (int)n; j++) {
358                     BIO_printf(bio_out, "%02X%c", md[j], (j + 1 == (int)n)
359                                ? '\n' : ':');
360                 }
361             }
362         }
363     }
364     out = bio_open_default(outfile, 'w', outformat);
365     if (out == NULL)
366         goto end;
367 
368     if (text)
369         X509_CRL_print_ex(out, x, get_nameopt());
370 
371     if (noout) {
372         ret = 0;
373         goto end;
374     }
375 
376     if (outformat == FORMAT_ASN1)
377         i = (int)i2d_X509_CRL_bio(out, x);
378     else
379         i = PEM_write_bio_X509_CRL(out, x);
380     if (!i) {
381         BIO_printf(bio_err, "unable to write CRL\n");
382         goto end;
383     }
384     ret = 0;
385 
386  end:
387     if (ret != 0)
388         ERR_print_errors(bio_err);
389     BIO_free_all(out);
390     EVP_MD_free(digest);
391     X509_CRL_free(x);
392     X509_STORE_CTX_free(ctx);
393     X509_STORE_free(store);
394     return ret;
395 }
396