Annotation of src/usr.bin/openssl/crl.c, Revision 1.8
1.8 ! doug 1: /* $OpenBSD: crl.c,v 1.7 2015/08/22 16:36:05 jsing 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) {
! 234: if (pledge("stdio rpath wpath cpath", NULL) == -1)
! 235: perror("pledge");
! 236: }
1.1 jsing 237:
1.2 jsing 238: if (bio_out == NULL) {
1.1 jsing 239: if ((bio_out = BIO_new(BIO_s_file())) != NULL) {
240: BIO_set_fp(bio_out, stdout, BIO_NOCLOSE);
241: }
1.2 jsing 242: }
243:
244: digest = EVP_sha1();
245:
246: memset(&crl_config, 0, sizeof(crl_config));
247: crl_config.informat = FORMAT_PEM;
248: crl_config.outformat = FORMAT_PEM;
1.1 jsing 249:
1.6 jsing 250: if (options_parse(argc, argv, crl_options, &digest_name, NULL) != 0) {
1.2 jsing 251: crl_usage();
252: goto end;
253: }
254:
255: if (crl_config.cafile != NULL || crl_config.capath != NULL)
256: crl_config.verify = 1;
257:
258: if (crl_config.nameopt != NULL) {
259: if (set_name_ex(&nmflag, crl_config.nameopt) != 1) {
260: fprintf(stderr,
261: "Invalid -nameopt argument '%s'\n",
262: crl_config.nameopt);
263: goto end;
1.1 jsing 264: }
1.2 jsing 265: }
266:
267: if (digest_name != NULL) {
268: if ((digest = EVP_get_digestbyname(digest_name)) == NULL) {
269: fprintf(stderr,
270: "Unknown message digest algorithm '%s'\n",
271: digest_name);
272: goto end;
1.1 jsing 273: }
274: }
275:
1.2 jsing 276: x = load_crl(crl_config.infile, crl_config.informat);
277: if (x == NULL)
1.1 jsing 278: goto end;
1.2 jsing 279:
280: if (crl_config.verify) {
1.1 jsing 281: store = X509_STORE_new();
282: lookup = X509_STORE_add_lookup(store, X509_LOOKUP_file());
283: if (lookup == NULL)
284: goto end;
1.2 jsing 285: if (!X509_LOOKUP_load_file(lookup, crl_config.cafile,
286: X509_FILETYPE_PEM))
1.1 jsing 287: X509_LOOKUP_load_file(lookup, NULL,
288: X509_FILETYPE_DEFAULT);
289:
290: lookup = X509_STORE_add_lookup(store, X509_LOOKUP_hash_dir());
291: if (lookup == NULL)
292: goto end;
1.2 jsing 293: if (!X509_LOOKUP_add_dir(lookup, crl_config.capath,
294: X509_FILETYPE_PEM))
1.1 jsing 295: X509_LOOKUP_add_dir(lookup, NULL,
296: X509_FILETYPE_DEFAULT);
297: ERR_clear_error();
298:
299: if (!X509_STORE_CTX_init(&ctx, store, NULL, NULL)) {
300: BIO_printf(bio_err,
301: "Error initialising X509 store\n");
302: goto end;
303: }
304: i = X509_STORE_get_by_subject(&ctx, X509_LU_X509,
305: X509_CRL_get_issuer(x), &xobj);
306: if (i <= 0) {
307: BIO_printf(bio_err,
308: "Error getting CRL issuer certificate\n");
309: goto end;
310: }
311: pkey = X509_get_pubkey(xobj.data.x509);
312: X509_OBJECT_free_contents(&xobj);
313: if (!pkey) {
314: BIO_printf(bio_err,
315: "Error getting CRL issuer public key\n");
316: goto end;
317: }
318: i = X509_CRL_verify(x, pkey);
319: EVP_PKEY_free(pkey);
320: if (i < 0)
321: goto end;
322: if (i == 0)
323: BIO_printf(bio_err, "verify failure\n");
324: else
325: BIO_printf(bio_err, "verify OK\n");
326: }
1.2 jsing 327:
328: /* Print requested information the order that the flags were given. */
329: for (i = 1; i <= argc; i++) {
330: if (crl_config.issuer == i) {
331: print_name(bio_out, "issuer=",
332: X509_CRL_get_issuer(x), nmflag);
333: }
334: if (crl_config.crlnumber == i) {
335: ASN1_INTEGER *crlnum;
336: crlnum = X509_CRL_get_ext_d2i(x,
337: NID_crl_number, NULL, NULL);
338: BIO_printf(bio_out, "crlNumber=");
339: if (crlnum) {
340: i2a_ASN1_INTEGER(bio_out, crlnum);
341: ASN1_INTEGER_free(crlnum);
342: } else
343: BIO_puts(bio_out, "<NONE>");
344: BIO_printf(bio_out, "\n");
345: }
346: if (crl_config.hash == i) {
347: BIO_printf(bio_out, "%08lx\n",
348: X509_NAME_hash(X509_CRL_get_issuer(x)));
349: }
1.1 jsing 350: #ifndef OPENSSL_NO_MD5
1.2 jsing 351: if (crl_config.hash_old == i) {
352: BIO_printf(bio_out, "%08lx\n",
353: X509_NAME_hash_old(X509_CRL_get_issuer(x)));
354: }
1.1 jsing 355: #endif
1.2 jsing 356: if (crl_config.lastupdate == i) {
357: BIO_printf(bio_out, "lastUpdate=");
358: ASN1_TIME_print(bio_out,
359: X509_CRL_get_lastUpdate(x));
360: BIO_printf(bio_out, "\n");
361: }
362: if (crl_config.nextupdate == i) {
363: BIO_printf(bio_out, "nextUpdate=");
364: if (X509_CRL_get_nextUpdate(x))
1.1 jsing 365: ASN1_TIME_print(bio_out,
1.2 jsing 366: X509_CRL_get_nextUpdate(x));
367: else
368: BIO_printf(bio_out, "NONE");
369: BIO_printf(bio_out, "\n");
370: }
371: if (crl_config.fingerprint == i) {
372: int j;
373: unsigned int n;
374: unsigned char md[EVP_MAX_MD_SIZE];
375:
376: if (!X509_CRL_digest(x, digest, md, &n)) {
377: BIO_printf(bio_err, "out of memory\n");
378: goto end;
1.1 jsing 379: }
1.2 jsing 380: BIO_printf(bio_out, "%s Fingerprint=",
381: OBJ_nid2sn(EVP_MD_type(digest)));
382: for (j = 0; j < (int) n; j++) {
383: BIO_printf(bio_out, "%02X%c", md[j],
384: (j + 1 == (int)n) ? '\n' : ':');
1.1 jsing 385: }
386: }
387: }
1.2 jsing 388:
1.1 jsing 389: out = BIO_new(BIO_s_file());
390: if (out == NULL) {
391: ERR_print_errors(bio_err);
392: goto end;
393: }
1.2 jsing 394: if (crl_config.outfile == NULL) {
1.1 jsing 395: BIO_set_fp(out, stdout, BIO_NOCLOSE);
396: } else {
1.2 jsing 397: if (BIO_write_filename(out, crl_config.outfile) <= 0) {
398: perror(crl_config.outfile);
1.1 jsing 399: goto end;
400: }
401: }
402:
1.2 jsing 403: if (crl_config.text)
1.1 jsing 404: X509_CRL_print(out, x);
405:
1.2 jsing 406: if (crl_config.noout) {
1.1 jsing 407: ret = 0;
408: goto end;
409: }
1.2 jsing 410: if (crl_config.outformat == FORMAT_ASN1)
1.1 jsing 411: i = (int) i2d_X509_CRL_bio(out, x);
1.2 jsing 412: else if (crl_config.outformat == FORMAT_PEM)
1.1 jsing 413: i = PEM_write_bio_X509_CRL(out, x);
414: else {
415: BIO_printf(bio_err,
416: "bad output format specified for outfile\n");
417: goto end;
418: }
419: if (!i) {
420: BIO_printf(bio_err, "unable to write CRL\n");
421: goto end;
422: }
423: ret = 0;
424:
425: end:
426: BIO_free_all(out);
427: BIO_free_all(bio_out);
428: bio_out = NULL;
429: X509_CRL_free(x);
430: if (store) {
431: X509_STORE_CTX_cleanup(&ctx);
432: X509_STORE_free(store);
433: }
434:
435: return (ret);
436: }
437:
438: static X509_CRL *
439: load_crl(char *infile, int format)
440: {
441: X509_CRL *x = NULL;
442: BIO *in = NULL;
443:
444: in = BIO_new(BIO_s_file());
445: if (in == NULL) {
446: ERR_print_errors(bio_err);
447: goto end;
448: }
449: if (infile == NULL)
450: BIO_set_fp(in, stdin, BIO_NOCLOSE);
451: else {
452: if (BIO_read_filename(in, infile) <= 0) {
453: perror(infile);
454: goto end;
455: }
456: }
457: if (format == FORMAT_ASN1)
458: x = d2i_X509_CRL_bio(in, NULL);
459: else if (format == FORMAT_PEM)
460: x = PEM_read_bio_X509_CRL(in, NULL, NULL, NULL);
461: else {
462: BIO_printf(bio_err,
463: "bad input format specified for input crl\n");
464: goto end;
465: }
466: if (x == NULL) {
467: BIO_printf(bio_err, "unable to load CRL\n");
468: ERR_print_errors(bio_err);
469: goto end;
470: }
471:
472: end:
473: BIO_free(in);
474: return (x);
475: }
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