Annotation of src/usr.bin/openssl/crl.c, Revision 1.10
1.10 ! deraadt 1: /* $OpenBSD: crl.c,v 1.9 2015/10/17 15:00:11 doug Exp $ */
1.1 jsing 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:
63: #include "apps.h"
64:
65: #include <openssl/bio.h>
66: #include <openssl/err.h>
67: #include <openssl/pem.h>
68: #include <openssl/x509.h>
69: #include <openssl/x509v3.h>
70:
1.2 jsing 71: static struct {
72: char *cafile;
73: char *capath;
74: int crlnumber;
75: int fingerprint;
76: int hash;
77: int hash_old;
78: char *infile;
79: int informat;
80: int issuer;
81: int lastupdate;
82: char *nameopt;
83: int nextupdate;
84: int noout;
85: char *outfile;
86: int outformat;
87: int text;
88: int verify;
89: } crl_config;
90:
91: static struct option crl_options[] = {
92: {
93: .name = "CAfile",
94: .argname = "file",
95: .desc = "Verify the CRL using certificates in the given file",
96: .type = OPTION_ARG,
97: .opt.arg = &crl_config.cafile,
98: },
99: {
100: .name = "CApath",
101: .argname = "path",
102: .desc = "Verify the CRL using certificates in the given path",
103: .type = OPTION_ARG,
104: .opt.arg = &crl_config.capath,
105: },
106: {
107: .name = "crlnumber",
108: .desc = "Print the CRL number",
109: .type = OPTION_FLAG_ORD,
110: .opt.flag = &crl_config.crlnumber,
111: },
112: {
113: .name = "fingerprint",
114: .desc = "Print the CRL fingerprint",
115: .type = OPTION_FLAG_ORD,
116: .opt.flag = &crl_config.fingerprint,
117: },
118: {
119: .name = "hash",
120: .desc = "Print the hash of the issuer name",
121: .type = OPTION_FLAG_ORD,
122: .opt.flag = &crl_config.hash,
123: },
124: {
125: .name = "hash_old",
126: .desc = "Print an old-style (MD5) hash of the issuer name",
127: .type = OPTION_FLAG_ORD,
128: .opt.flag = &crl_config.hash_old,
129: },
130: {
131: .name = "in",
132: .argname = "file",
133: .desc = "Input file to read from (stdin if unspecified)",
134: .type = OPTION_ARG,
135: .opt.arg = &crl_config.infile,
136: },
137: {
138: .name = "inform",
139: .argname = "format",
140: .desc = "Input format (DER or PEM)",
141: .type = OPTION_ARG_FORMAT,
142: .opt.value = &crl_config.informat,
143: },
144: {
145: .name = "issuer",
146: .desc = "Print the issuer name",
147: .type = OPTION_FLAG_ORD,
148: .opt.flag = &crl_config.issuer,
149: },
150: {
151: .name = "lastupdate",
152: .desc = "Print the lastUpdate field",
153: .type = OPTION_FLAG_ORD,
154: .opt.flag = &crl_config.lastupdate,
155: },
156: {
157: .name = "nameopt",
158: .argname = "options",
159: .desc = "Specify certificate name options",
160: .type = OPTION_ARG,
161: .opt.arg = &crl_config.nameopt,
162: },
163: {
164: .name = "nextupdate",
165: .desc = "Print the nextUpdate field",
166: .type = OPTION_FLAG_ORD,
167: .opt.flag = &crl_config.nextupdate,
168: },
169: {
170: .name = "noout",
171: .desc = "Do not output the encoded version of the CRL",
172: .type = OPTION_FLAG,
173: .opt.flag = &crl_config.noout,
174: },
175: {
176: .name = "out",
177: .argname = "file",
178: .desc = "Output file to write to (stdout if unspecified)",
179: .type = OPTION_ARG,
180: .opt.arg = &crl_config.outfile,
181: },
182: {
183: .name = "outform",
184: .argname = "format",
185: .desc = "Output format (DER or PEM)",
186: .type = OPTION_ARG_FORMAT,
187: .opt.value = &crl_config.outformat,
188: },
189: {
190: .name = "text",
191: .desc = "Print out the CRL in text form",
192: .type = OPTION_FLAG,
193: .opt.flag = &crl_config.text,
194: },
195: {
196: .name = "verify",
197: .desc = "Verify the signature on the CRL",
198: .type = OPTION_FLAG,
199: .opt.flag = &crl_config.verify,
200: },
1.5 bcook 201: {NULL},
1.1 jsing 202: };
203:
1.2 jsing 204: static void
205: crl_usage(void)
206: {
207: fprintf(stderr,
208: "usage: crl [-CAfile file] [-CApath dir] [-fingerprint] [-hash]\n"
209: " [-in file] [-inform DER | PEM] [-issuer] [-lastupdate]\n"
210: " [-nextupdate] [-noout] [-out file] [-outform DER | PEM]\n"
211: " [-text]\n\n");
212: options_usage(crl_options);
213: }
214:
1.1 jsing 215: static X509_CRL *load_crl(char *file, int format);
216: static BIO *bio_out = NULL;
217:
218: int
219: crl_main(int argc, char **argv)
220: {
221: unsigned long nmflag = 0;
222: X509_CRL *x = NULL;
1.2 jsing 223: int ret = 1, i;
1.1 jsing 224: BIO *out = NULL;
225: X509_STORE *store = NULL;
226: X509_STORE_CTX ctx;
227: X509_LOOKUP *lookup = NULL;
228: X509_OBJECT xobj;
229: EVP_PKEY *pkey;
1.2 jsing 230: const EVP_MD *digest;
231: char *digest_name = NULL;
1.8 doug 232:
233: if (single_execution) {
1.10 ! deraadt 234: if (pledge("stdio cpath wpath rpath", NULL) == -1) {
1.8 doug 235: perror("pledge");
1.9 doug 236: exit(1);
237: }
1.8 doug 238: }
1.1 jsing 239:
1.2 jsing 240: if (bio_out == NULL) {
1.1 jsing 241: if ((bio_out = BIO_new(BIO_s_file())) != NULL) {
242: BIO_set_fp(bio_out, stdout, BIO_NOCLOSE);
243: }
1.2 jsing 244: }
245:
246: digest = EVP_sha1();
247:
248: memset(&crl_config, 0, sizeof(crl_config));
249: crl_config.informat = FORMAT_PEM;
250: crl_config.outformat = FORMAT_PEM;
1.1 jsing 251:
1.6 jsing 252: if (options_parse(argc, argv, crl_options, &digest_name, NULL) != 0) {
1.2 jsing 253: crl_usage();
254: goto end;
255: }
256:
257: if (crl_config.cafile != NULL || crl_config.capath != NULL)
258: crl_config.verify = 1;
259:
260: if (crl_config.nameopt != NULL) {
261: if (set_name_ex(&nmflag, crl_config.nameopt) != 1) {
262: fprintf(stderr,
263: "Invalid -nameopt argument '%s'\n",
264: crl_config.nameopt);
265: goto end;
1.1 jsing 266: }
1.2 jsing 267: }
268:
269: if (digest_name != NULL) {
270: if ((digest = EVP_get_digestbyname(digest_name)) == NULL) {
271: fprintf(stderr,
272: "Unknown message digest algorithm '%s'\n",
273: digest_name);
274: goto end;
1.1 jsing 275: }
276: }
277:
1.2 jsing 278: x = load_crl(crl_config.infile, crl_config.informat);
279: if (x == NULL)
1.1 jsing 280: goto end;
1.2 jsing 281:
282: if (crl_config.verify) {
1.1 jsing 283: store = X509_STORE_new();
284: lookup = X509_STORE_add_lookup(store, X509_LOOKUP_file());
285: if (lookup == NULL)
286: goto end;
1.2 jsing 287: if (!X509_LOOKUP_load_file(lookup, crl_config.cafile,
288: X509_FILETYPE_PEM))
1.1 jsing 289: X509_LOOKUP_load_file(lookup, NULL,
290: X509_FILETYPE_DEFAULT);
291:
292: lookup = X509_STORE_add_lookup(store, X509_LOOKUP_hash_dir());
293: if (lookup == NULL)
294: goto end;
1.2 jsing 295: if (!X509_LOOKUP_add_dir(lookup, crl_config.capath,
296: X509_FILETYPE_PEM))
1.1 jsing 297: X509_LOOKUP_add_dir(lookup, NULL,
298: X509_FILETYPE_DEFAULT);
299: ERR_clear_error();
300:
301: if (!X509_STORE_CTX_init(&ctx, store, NULL, NULL)) {
302: BIO_printf(bio_err,
303: "Error initialising X509 store\n");
304: goto end;
305: }
306: i = X509_STORE_get_by_subject(&ctx, X509_LU_X509,
307: X509_CRL_get_issuer(x), &xobj);
308: if (i <= 0) {
309: BIO_printf(bio_err,
310: "Error getting CRL issuer certificate\n");
311: goto end;
312: }
313: pkey = X509_get_pubkey(xobj.data.x509);
314: X509_OBJECT_free_contents(&xobj);
315: if (!pkey) {
316: BIO_printf(bio_err,
317: "Error getting CRL issuer public key\n");
318: goto end;
319: }
320: i = X509_CRL_verify(x, pkey);
321: EVP_PKEY_free(pkey);
322: if (i < 0)
323: goto end;
324: if (i == 0)
325: BIO_printf(bio_err, "verify failure\n");
326: else
327: BIO_printf(bio_err, "verify OK\n");
328: }
1.2 jsing 329:
330: /* Print requested information the order that the flags were given. */
331: for (i = 1; i <= argc; i++) {
332: if (crl_config.issuer == i) {
333: print_name(bio_out, "issuer=",
334: X509_CRL_get_issuer(x), nmflag);
335: }
336: if (crl_config.crlnumber == i) {
337: ASN1_INTEGER *crlnum;
338: crlnum = X509_CRL_get_ext_d2i(x,
339: NID_crl_number, NULL, NULL);
340: BIO_printf(bio_out, "crlNumber=");
341: if (crlnum) {
342: i2a_ASN1_INTEGER(bio_out, crlnum);
343: ASN1_INTEGER_free(crlnum);
344: } else
345: BIO_puts(bio_out, "<NONE>");
346: BIO_printf(bio_out, "\n");
347: }
348: if (crl_config.hash == i) {
349: BIO_printf(bio_out, "%08lx\n",
350: X509_NAME_hash(X509_CRL_get_issuer(x)));
351: }
1.1 jsing 352: #ifndef OPENSSL_NO_MD5
1.2 jsing 353: if (crl_config.hash_old == i) {
354: BIO_printf(bio_out, "%08lx\n",
355: X509_NAME_hash_old(X509_CRL_get_issuer(x)));
356: }
1.1 jsing 357: #endif
1.2 jsing 358: if (crl_config.lastupdate == i) {
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 (crl_config.nextupdate == i) {
365: BIO_printf(bio_out, "nextUpdate=");
366: if (X509_CRL_get_nextUpdate(x))
1.1 jsing 367: ASN1_TIME_print(bio_out,
1.2 jsing 368: X509_CRL_get_nextUpdate(x));
369: else
370: BIO_printf(bio_out, "NONE");
371: BIO_printf(bio_out, "\n");
372: }
373: if (crl_config.fingerprint == i) {
374: int j;
375: unsigned int n;
376: unsigned char md[EVP_MAX_MD_SIZE];
377:
378: if (!X509_CRL_digest(x, digest, md, &n)) {
379: BIO_printf(bio_err, "out of memory\n");
380: goto end;
1.1 jsing 381: }
1.2 jsing 382: BIO_printf(bio_out, "%s Fingerprint=",
383: OBJ_nid2sn(EVP_MD_type(digest)));
384: for (j = 0; j < (int) n; j++) {
385: BIO_printf(bio_out, "%02X%c", md[j],
386: (j + 1 == (int)n) ? '\n' : ':');
1.1 jsing 387: }
388: }
389: }
1.2 jsing 390:
1.1 jsing 391: out = BIO_new(BIO_s_file());
392: if (out == NULL) {
393: ERR_print_errors(bio_err);
394: goto end;
395: }
1.2 jsing 396: if (crl_config.outfile == NULL) {
1.1 jsing 397: BIO_set_fp(out, stdout, BIO_NOCLOSE);
398: } else {
1.2 jsing 399: if (BIO_write_filename(out, crl_config.outfile) <= 0) {
400: perror(crl_config.outfile);
1.1 jsing 401: goto end;
402: }
403: }
404:
1.2 jsing 405: if (crl_config.text)
1.1 jsing 406: X509_CRL_print(out, x);
407:
1.2 jsing 408: if (crl_config.noout) {
1.1 jsing 409: ret = 0;
410: goto end;
411: }
1.2 jsing 412: if (crl_config.outformat == FORMAT_ASN1)
1.1 jsing 413: i = (int) i2d_X509_CRL_bio(out, x);
1.2 jsing 414: else if (crl_config.outformat == FORMAT_PEM)
1.1 jsing 415: i = PEM_write_bio_X509_CRL(out, x);
416: else {
417: BIO_printf(bio_err,
418: "bad output format specified for outfile\n");
419: goto end;
420: }
421: if (!i) {
422: BIO_printf(bio_err, "unable to write CRL\n");
423: goto end;
424: }
425: ret = 0;
426:
427: end:
428: BIO_free_all(out);
429: BIO_free_all(bio_out);
430: bio_out = NULL;
431: X509_CRL_free(x);
432: if (store) {
433: X509_STORE_CTX_cleanup(&ctx);
434: X509_STORE_free(store);
435: }
436:
437: return (ret);
438: }
439:
440: static X509_CRL *
441: load_crl(char *infile, int format)
442: {
443: X509_CRL *x = NULL;
444: BIO *in = NULL;
445:
446: in = BIO_new(BIO_s_file());
447: if (in == NULL) {
448: ERR_print_errors(bio_err);
449: goto end;
450: }
451: if (infile == NULL)
452: BIO_set_fp(in, stdin, BIO_NOCLOSE);
453: else {
454: if (BIO_read_filename(in, infile) <= 0) {
455: perror(infile);
456: goto end;
457: }
458: }
459: if (format == FORMAT_ASN1)
460: x = d2i_X509_CRL_bio(in, NULL);
461: else if (format == FORMAT_PEM)
462: x = PEM_read_bio_X509_CRL(in, NULL, NULL, NULL);
463: else {
464: BIO_printf(bio_err,
465: "bad input format specified for input crl\n");
466: goto end;
467: }
468: if (x == NULL) {
469: BIO_printf(bio_err, "unable to load CRL\n");
470: ERR_print_errors(bio_err);
471: goto end;
472: }
473:
474: end:
475: BIO_free(in);
476: return (x);
477: }
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