Annotation of src/usr.bin/openssl/ts.c, Revision 1.23
1.23 ! inoguchi 1: /* $OpenBSD: ts.c,v 1.22 2022/03/24 14:07:08 inoguchi Exp $ */
1.1 jsing 2: /* Written by Zoltan Glozik (zglozik@stones.com) for the OpenSSL
3: * project 2002.
4: */
5: /* ====================================================================
6: * Copyright (c) 2001 The OpenSSL Project. All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: *
12: * 1. Redistributions of source code must retain the above copyright
13: * notice, this list of conditions and the following disclaimer.
14: *
15: * 2. Redistributions in binary form must reproduce the above copyright
16: * notice, this list of conditions and the following disclaimer in
17: * the documentation and/or other materials provided with the
18: * distribution.
19: *
20: * 3. All advertising materials mentioning features or use of this
21: * software must display the following acknowledgment:
22: * "This product includes software developed by the OpenSSL Project
23: * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24: *
25: * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26: * endorse or promote products derived from this software without
27: * prior written permission. For written permission, please contact
28: * licensing@OpenSSL.org.
29: *
30: * 5. Products derived from this software may not be called "OpenSSL"
31: * nor may "OpenSSL" appear in their names without prior written
32: * permission of the OpenSSL Project.
33: *
34: * 6. Redistributions of any form whatsoever must retain the following
35: * acknowledgment:
36: * "This product includes software developed by the OpenSSL Project
37: * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38: *
39: * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40: * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43: * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46: * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48: * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50: * OF THE POSSIBILITY OF SUCH DAMAGE.
51: * ====================================================================
52: *
53: * This product includes cryptographic software written by Eric Young
54: * (eay@cryptsoft.com). This product includes software written by Tim
55: * Hudson (tjh@cryptsoft.com).
56: *
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/bn.h>
67: #include <openssl/err.h>
68: #include <openssl/pem.h>
69: #include <openssl/ts.h>
70:
71: /* Length of the nonce of the request in bits (must be a multiple of 8). */
72: #define NONCE_LENGTH 64
73:
74: /* Macro definitions for the configuration file. */
75: #define ENV_OID_FILE "oid_file"
76:
77: /* Local function declarations. */
78:
79: static ASN1_OBJECT *txt2obj(const char *oid);
80: static CONF *load_config_file(const char *configfile);
81:
82: /* Query related functions. */
1.20 inoguchi 83: static int query_command(const char *data, char *digest, const EVP_MD *md,
84: const char *policy, int no_nonce, int cert, const char *in, const char *out,
85: int text);
1.1 jsing 86: static BIO *BIO_open_with_default(const char *file, const char *mode,
1.19 inoguchi 87: FILE *default_fp);
88: static TS_REQ *create_query(BIO *data_bio, char *digest, const EVP_MD *md,
1.1 jsing 89: const char *policy, int no_nonce, int cert);
1.20 inoguchi 90: static int create_digest(BIO *input, char *digest, const EVP_MD *md,
91: unsigned char **md_value);
1.1 jsing 92: static ASN1_INTEGER *create_nonce(int bits);
93:
94: /* Reply related functions. */
1.20 inoguchi 95: static int reply_command(CONF *conf, char *section, char *queryfile,
96: char *passin, char *inkey, char *signer, char *chain, const char *policy,
97: char *in, int token_in, char *out, int token_out, int text);
1.19 inoguchi 98: static TS_RESP *read_PKCS7(BIO *in_bio);
99: static TS_RESP *create_response(CONF *conf, const char *section,
1.20 inoguchi 100: char *queryfile, char *passin, char *inkey, char *signer, char *chain,
101: const char *policy);
1.19 inoguchi 102: static ASN1_INTEGER *serial_cb(TS_RESP_CTX *ctx, void *data);
1.1 jsing 103: static ASN1_INTEGER *next_serial(const char *serialfile);
1.19 inoguchi 104: static int save_ts_serial(const char *serialfile, ASN1_INTEGER *serial);
1.1 jsing 105:
106: /* Verify related functions. */
1.20 inoguchi 107: static int verify_command(char *data, char *digest, char *queryfile, char *in,
108: int token_in, char *ca_path, char *ca_file, char *untrusted);
1.1 jsing 109: static TS_VERIFY_CTX *create_verify_ctx(char *data, char *digest,
1.20 inoguchi 110: char *queryfile, char *ca_path, char *ca_file, char *untrusted);
1.1 jsing 111: static X509_STORE *create_cert_store(char *ca_path, char *ca_file);
1.19 inoguchi 112: static int verify_cb(int ok, X509_STORE_CTX *ctx);
1.1 jsing 113:
1.18 inoguchi 114: enum mode {
115: CMD_NONE, CMD_QUERY, CMD_REPLY, CMD_VERIFY
116: };
117:
118: static struct {
119: char *ca_file;
120: char *ca_path;
121: int cert;
122: char *chain;
123: char *configfile;
124: char *data;
125: char *digest;
126: char *in;
127: char *inkey;
128: const EVP_MD *md;
129: int mode;
130: int no_nonce;
131: char *out;
132: char *passin;
133: char *policy;
134: char *queryfile;
135: char *section;
136: char *signer;
137: int text;
138: int token_in;
139: int token_out;
140: char *untrusted;
141: } ts_config;
142:
143: static int
144: ts_opt_md(int argc, char **argv, int *argsused)
145: {
146: char *name = argv[0];
147:
148: if (*name++ != '-')
149: return (1);
150:
151: if ((ts_config.md = EVP_get_digestbyname(name)) == NULL)
152: return (1);
153:
154: *argsused = 1;
155: return (0);
156: }
157:
158: static int
159: ts_opt_query(void)
160: {
161: if (ts_config.mode != CMD_NONE)
162: return (1);
163: ts_config.mode = CMD_QUERY;
164: return (0);
165: }
166:
167: static int
168: ts_opt_reply(void)
169: {
170: if (ts_config.mode != CMD_NONE)
171: return (1);
172: ts_config.mode = CMD_REPLY;
173: return (0);
174: }
175:
176: static int
177: ts_opt_verify(void)
178: {
179: if (ts_config.mode != CMD_NONE)
180: return (1);
181: ts_config.mode = CMD_VERIFY;
182: return (0);
183: }
184:
185: static const struct option ts_options[] = {
186: {
187: .name = "CAfile",
188: .argname = "file",
189: .desc = "Certificate Authority file",
190: .type = OPTION_ARG,
191: .opt.arg = &ts_config.ca_file,
192: },
193: {
194: .name = "CApath",
195: .argname = "path",
196: .desc = "Certificate Authority path",
197: .type = OPTION_ARG,
198: .opt.arg = &ts_config.ca_path,
199: },
200: {
201: .name = "cert",
202: .desc = "Include signing certificate in the response",
203: .type = OPTION_FLAG,
204: .opt.flag = &ts_config.cert,
205: },
206: {
207: .name = "chain",
208: .argname = "file",
209: .desc = "PEM certificates that will be included in the response",
210: .type = OPTION_ARG,
211: .opt.arg = &ts_config.chain,
212: },
213: {
214: .name = "config",
215: .argname = "file",
216: .desc = "Specify an alternative configuration file",
217: .type = OPTION_ARG,
218: .opt.arg = &ts_config.configfile,
219: },
220: {
221: .name = "data",
222: .argname = "file",
223: .desc = "Data file for which the time stamp request needs to be created",
224: .type = OPTION_ARG,
225: .opt.arg = &ts_config.data,
226: },
227: {
228: .name = "digest",
229: .argname = "arg",
230: .desc = "Specify the message imprint explicitly without the data file",
231: .type = OPTION_ARG,
232: .opt.arg = &ts_config.digest,
233: },
234: {
235: .name = "in",
236: .argname = "file",
237: .desc = "Input file",
238: .type = OPTION_ARG,
239: .opt.arg = &ts_config.in,
240: },
241: {
242: .name = "inkey",
243: .argname = "file",
244: .desc = "Input key file",
245: .type = OPTION_ARG,
246: .opt.arg = &ts_config.inkey,
247: },
248: {
249: .name = "no_nonce",
250: .desc = "Specify no nonce in the request",
251: .type = OPTION_FLAG,
252: .opt.flag = &ts_config.no_nonce,
253: },
254: {
255: .name = "out",
256: .argname = "file",
257: .desc = "Output file",
258: .type = OPTION_ARG,
259: .opt.arg = &ts_config.out,
260: },
261: {
262: .name = "passin",
263: .argname = "src",
264: .desc = "Private key password source",
265: .type = OPTION_ARG,
266: .opt.arg = &ts_config.passin,
267: },
268: {
269: .name = "policy",
270: .argname = "object_id",
271: .desc = "Policy for the TSA to use when creating the time stamp token",
272: .type = OPTION_ARG,
273: .opt.arg = &ts_config.policy,
274: },
275: {
276: .name = "query",
277: .desc = "Create and print a time stamp request",
278: .type = OPTION_FUNC,
279: .opt.func = ts_opt_query,
280: },
281: {
282: .name = "queryfile",
283: .argname = "file",
284: .desc = "File containing a DER-encoded time stamp request",
285: .type = OPTION_ARG,
286: .opt.arg = &ts_config.queryfile,
287: },
288: {
289: .name = "reply",
290: .desc = "Create a time stamp response",
291: .type = OPTION_FUNC,
292: .opt.func = ts_opt_reply,
293: },
294: {
295: .name = "section",
296: .argname = "arg",
297: .desc = "TSA section containing the settings for response generation",
298: .type = OPTION_ARG,
299: .opt.arg = &ts_config.section,
300: },
301: {
302: .name = "signer",
303: .argname = "file",
304: .desc = "Signer certificate file",
305: .type = OPTION_ARG,
306: .opt.arg = &ts_config.signer,
307: },
308: {
309: .name = "text",
310: .desc = "Output in human-readable text format",
311: .type = OPTION_FLAG,
312: .opt.flag = &ts_config.text,
313: },
314: {
315: .name = "token_in",
316: .desc = "Input is a DER-encoded time stamp token",
317: .type = OPTION_FLAG,
318: .opt.flag = &ts_config.token_in,
319: },
320: {
321: .name = "token_out",
322: .desc = "Output is a DER-encoded time stamp token",
323: .type = OPTION_FLAG,
324: .opt.flag = &ts_config.token_out,
325: },
326: {
327: .name = "untrusted",
328: .argname = "file",
329: .desc = "File containing untrusted certificates",
330: .type = OPTION_ARG,
331: .opt.arg = &ts_config.untrusted,
332: },
333: {
334: .name = "verify",
335: .desc = "Verify a time stamp response",
336: .type = OPTION_FUNC,
337: .opt.func = ts_opt_verify,
338: },
339: {
340: .name = NULL,
341: .desc = "",
342: .type = OPTION_ARGV_FUNC,
343: .opt.argvfunc = ts_opt_md,
344: },
345: { NULL },
346: };
347:
348: static void
349: ts_usage(void)
350: {
351: fprintf(stderr, "usage:\n"
352: "ts -query [-md4 | -md5 | -ripemd160 | -sha1] [-cert]\n"
353: " [-config configfile] [-data file_to_hash]\n"
354: " [-digest digest_bytes] [-in request.tsq] [-no_nonce]\n"
355: " [-out request.tsq] [-policy object_id] [-text]\n");
356: fprintf(stderr, "\n"
357: "ts -reply [-chain certs_file.pem] [-config configfile]\n"
358: " [-in response.tsr] [-inkey private.pem] [-out response.tsr]\n"
359: " [-passin arg] [-policy object_id] [-queryfile request.tsq]\n"
360: " [-section tsa_section] [-signer tsa_cert.pem] [-text]\n"
361: " [-token_in] [-token_out]\n");
362: fprintf(stderr, "\n"
363: "ts -verify [-CAfile trusted_certs.pem]\n"
364: " [-CApath trusted_cert_path] [-data file_to_hash]\n"
365: " [-digest digest_bytes] [-in response.tsr]\n"
366: " [-queryfile request.tsq] [-token_in]\n"
367: " [-untrusted cert_file.pem]\n");
368: fprintf(stderr, "\n");
369: options_usage(ts_options);
370: fprintf(stderr, "\n");
371: }
372:
1.1 jsing 373: int
374: ts_main(int argc, char **argv)
375: {
376: int ret = 1;
377: CONF *conf = NULL;
378: char *password = NULL; /* Password itself. */
1.11 doug 379:
380: if (single_execution) {
1.14 deraadt 381: if (pledge("stdio cpath wpath rpath tty", NULL) == -1) {
1.11 doug 382: perror("pledge");
1.13 doug 383: exit(1);
384: }
1.11 doug 385: }
1.1 jsing 386:
1.18 inoguchi 387: memset(&ts_config, 0, sizeof(ts_config));
388: ts_config.mode = CMD_NONE;
389:
390: if (options_parse(argc, argv, ts_options, NULL, NULL) != 0)
391: goto usage;
1.1 jsing 392:
393: /* Get the password if required. */
1.21 inoguchi 394: if (ts_config.mode == CMD_REPLY && ts_config.passin != NULL &&
1.18 inoguchi 395: !app_passwd(bio_err, ts_config.passin, NULL, &password, NULL)) {
1.1 jsing 396: BIO_printf(bio_err, "Error getting password.\n");
397: goto cleanup;
398: }
399: /*
400: * Check consistency of parameters and execute the appropriate
401: * function.
402: */
1.18 inoguchi 403: switch (ts_config.mode) {
1.1 jsing 404: case CMD_NONE:
405: goto usage;
406: case CMD_QUERY:
407: /*
408: * Data file and message imprint cannot be specified at the
409: * same time.
410: */
1.18 inoguchi 411: ret = ts_config.data != NULL && ts_config.digest != NULL;
1.1 jsing 412: if (ret)
413: goto usage;
414: /* Load the config file for possible policy OIDs. */
1.18 inoguchi 415: conf = load_config_file(ts_config.configfile);
1.20 inoguchi 416: ret = !query_command(ts_config.data, ts_config.digest,
417: ts_config.md, ts_config.policy, ts_config.no_nonce,
418: ts_config.cert, ts_config.in, ts_config.out,
419: ts_config.text);
1.1 jsing 420: break;
421: case CMD_REPLY:
1.18 inoguchi 422: conf = load_config_file(ts_config.configfile);
423: if (ts_config.in == NULL) {
1.20 inoguchi 424: ret = !(ts_config.queryfile != NULL && conf != NULL &&
425: !ts_config.token_in);
1.1 jsing 426: if (ret)
427: goto usage;
428: } else {
429: /* 'in' and 'queryfile' are exclusive. */
1.18 inoguchi 430: ret = !(ts_config.queryfile == NULL);
1.1 jsing 431: if (ret)
432: goto usage;
433: }
434:
1.20 inoguchi 435: ret = !reply_command(conf, ts_config.section,
436: ts_config.queryfile, password, ts_config.inkey,
437: ts_config.signer, ts_config.chain, ts_config.policy,
438: ts_config.in, ts_config.token_in, ts_config.out,
439: ts_config.token_out, ts_config.text);
1.1 jsing 440: break;
441: case CMD_VERIFY:
1.21 inoguchi 442: ret = !(((ts_config.queryfile != NULL && ts_config.data == NULL &&
443: ts_config.digest == NULL) ||
444: (ts_config.queryfile == NULL && ts_config.data != NULL &&
445: ts_config.digest == NULL) ||
446: (ts_config.queryfile == NULL && ts_config.data == NULL &&
447: ts_config.digest != NULL)) &&
1.20 inoguchi 448: ts_config.in != NULL);
1.1 jsing 449: if (ret)
450: goto usage;
451:
1.20 inoguchi 452: ret = !verify_command(ts_config.data, ts_config.digest,
453: ts_config.queryfile, ts_config.in, ts_config.token_in,
1.18 inoguchi 454: ts_config.ca_path, ts_config.ca_file, ts_config.untrusted);
1.1 jsing 455: }
456:
457: goto cleanup;
458:
1.15 jsing 459: usage:
1.18 inoguchi 460: ts_usage();
1.1 jsing 461:
1.15 jsing 462: cleanup:
1.1 jsing 463: /* Clean up. */
464: NCONF_free(conf);
465: free(password);
466: OBJ_cleanup();
467:
468: return (ret);
469: }
470:
471: /*
472: * Configuration file-related function definitions.
473: */
474:
475: static ASN1_OBJECT *
476: txt2obj(const char *oid)
477: {
478: ASN1_OBJECT *oid_obj = NULL;
479:
1.21 inoguchi 480: if ((oid_obj = OBJ_txt2obj(oid, 0)) == NULL)
1.1 jsing 481: BIO_printf(bio_err, "cannot convert %s to OID\n", oid);
482:
483: return oid_obj;
484: }
485:
486: static CONF *
487: load_config_file(const char *configfile)
488: {
489: CONF *conf = NULL;
490: long errorline = -1;
491:
1.21 inoguchi 492: if (configfile == NULL)
1.1 jsing 493: configfile = getenv("OPENSSL_CONF");
494:
1.21 inoguchi 495: if (configfile != NULL &&
496: ((conf = NCONF_new(NULL)) == NULL ||
1.1 jsing 497: NCONF_load(conf, configfile, &errorline) <= 0)) {
498: if (errorline <= 0)
499: BIO_printf(bio_err, "error loading the config file "
500: "'%s'\n", configfile);
501: else
502: BIO_printf(bio_err, "error on line %ld of config file "
503: "'%s'\n", errorline, configfile);
504: }
505: if (conf != NULL) {
506: const char *p;
507:
508: BIO_printf(bio_err, "Using configuration from %s\n",
509: configfile);
510: p = NCONF_get_string(conf, NULL, ENV_OID_FILE);
511: if (p != NULL) {
512: BIO *oid_bio = BIO_new_file(p, "r");
1.21 inoguchi 513: if (oid_bio == NULL)
1.1 jsing 514: ERR_print_errors(bio_err);
515: else {
516: OBJ_create_objects(oid_bio);
517: BIO_free_all(oid_bio);
518: }
519: } else
520: ERR_clear_error();
521: if (!add_oid_section(bio_err, conf))
522: ERR_print_errors(bio_err);
523: }
524: return conf;
525: }
526:
527: /*
528: * Query-related method definitions.
529: */
530:
531: static int
1.19 inoguchi 532: query_command(const char *data, char *digest, const EVP_MD *md,
1.20 inoguchi 533: const char *policy, int no_nonce, int cert, const char *in, const char *out,
534: int text)
1.1 jsing 535: {
536: int ret = 0;
537: TS_REQ *query = NULL;
538: BIO *in_bio = NULL;
539: BIO *data_bio = NULL;
540: BIO *out_bio = NULL;
541:
542: /* Build query object either from file or from scratch. */
543: if (in != NULL) {
544: if ((in_bio = BIO_new_file(in, "rb")) == NULL)
545: goto end;
546: query = d2i_TS_REQ_bio(in_bio, NULL);
547: } else {
548: /* Open the file if no explicit digest bytes were specified. */
1.21 inoguchi 549: if (digest == NULL &&
550: (data_bio = BIO_open_with_default(data, "rb", stdin)) == NULL)
1.1 jsing 551: goto end;
552: /* Creating the query object. */
553: query = create_query(data_bio, digest, md,
554: policy, no_nonce, cert);
555: /* Saving the random number generator state. */
556: }
557: if (query == NULL)
558: goto end;
559:
560: /* Write query either in ASN.1 or in text format. */
561: if ((out_bio = BIO_open_with_default(out, "wb", stdout)) == NULL)
562: goto end;
563: if (text) {
564: /* Text output. */
565: if (!TS_REQ_print_bio(out_bio, query))
566: goto end;
567: } else {
568: /* ASN.1 output. */
569: if (!i2d_TS_REQ_bio(out_bio, query))
570: goto end;
571: }
572:
573: ret = 1;
574:
1.15 jsing 575: end:
1.1 jsing 576: ERR_print_errors(bio_err);
577:
578: /* Clean up. */
579: BIO_free_all(in_bio);
580: BIO_free_all(data_bio);
581: BIO_free_all(out_bio);
582: TS_REQ_free(query);
583:
584: return ret;
585: }
586:
587: static BIO *
1.19 inoguchi 588: BIO_open_with_default(const char *file, const char *mode, FILE *default_fp)
1.1 jsing 589: {
590: return file == NULL ? BIO_new_fp(default_fp, BIO_NOCLOSE) :
591: BIO_new_file(file, mode);
592: }
593:
594: static TS_REQ *
1.20 inoguchi 595: create_query(BIO *data_bio, char *digest, const EVP_MD *md, const char *policy,
596: int no_nonce, int cert)
1.1 jsing 597: {
598: int ret = 0;
599: TS_REQ *ts_req = NULL;
600: int len;
601: TS_MSG_IMPRINT *msg_imprint = NULL;
602: X509_ALGOR *algo = NULL;
603: unsigned char *data = NULL;
604: ASN1_OBJECT *policy_obj = NULL;
605: ASN1_INTEGER *nonce_asn1 = NULL;
606:
607: /* Setting default message digest. */
1.21 inoguchi 608: if (md == NULL && (md = EVP_get_digestbyname("sha1")) == NULL)
1.1 jsing 609: goto err;
610:
611: /* Creating request object. */
1.21 inoguchi 612: if ((ts_req = TS_REQ_new()) == NULL)
1.1 jsing 613: goto err;
614:
615: /* Setting version. */
616: if (!TS_REQ_set_version(ts_req, 1))
617: goto err;
618:
619: /* Creating and adding MSG_IMPRINT object. */
1.21 inoguchi 620: if ((msg_imprint = TS_MSG_IMPRINT_new()) == NULL)
1.1 jsing 621: goto err;
622:
623: /* Adding algorithm. */
1.21 inoguchi 624: if ((algo = X509_ALGOR_new()) == NULL)
1.1 jsing 625: goto err;
1.21 inoguchi 626: if ((algo->algorithm = OBJ_nid2obj(EVP_MD_type(md))) == NULL)
1.1 jsing 627: goto err;
1.21 inoguchi 628: if ((algo->parameter = ASN1_TYPE_new()) == NULL)
1.1 jsing 629: goto err;
630: algo->parameter->type = V_ASN1_NULL;
631: if (!TS_MSG_IMPRINT_set_algo(msg_imprint, algo))
632: goto err;
633:
634: /* Adding message digest. */
635: if ((len = create_digest(data_bio, digest, md, &data)) == 0)
636: goto err;
637: if (!TS_MSG_IMPRINT_set_msg(msg_imprint, data, len))
638: goto err;
639:
640: if (!TS_REQ_set_msg_imprint(ts_req, msg_imprint))
641: goto err;
642:
643: /* Setting policy if requested. */
1.21 inoguchi 644: if (policy != NULL && (policy_obj = txt2obj(policy)) == NULL)
1.1 jsing 645: goto err;
1.21 inoguchi 646: if (policy_obj != NULL && !TS_REQ_set_policy_id(ts_req, policy_obj))
1.1 jsing 647: goto err;
648:
649: /* Setting nonce if requested. */
1.21 inoguchi 650: if (!no_nonce && (nonce_asn1 = create_nonce(NONCE_LENGTH)) == NULL)
1.1 jsing 651: goto err;
1.21 inoguchi 652: if (nonce_asn1 != NULL && !TS_REQ_set_nonce(ts_req, nonce_asn1))
1.1 jsing 653: goto err;
654:
655: /* Setting certificate request flag if requested. */
656: if (!TS_REQ_set_cert_req(ts_req, cert))
657: goto err;
658:
659: ret = 1;
660:
1.15 jsing 661: err:
1.1 jsing 662: if (!ret) {
663: TS_REQ_free(ts_req);
664: ts_req = NULL;
665: BIO_printf(bio_err, "could not create query\n");
666: }
667: TS_MSG_IMPRINT_free(msg_imprint);
668: X509_ALGOR_free(algo);
669: free(data);
670: ASN1_OBJECT_free(policy_obj);
671: ASN1_INTEGER_free(nonce_asn1);
672:
673: return ts_req;
674: }
675:
676: static int
1.19 inoguchi 677: create_digest(BIO *input, char *digest, const EVP_MD *md,
1.1 jsing 678: unsigned char **md_value)
679: {
680: int md_value_len;
1.23 ! inoguchi 681: EVP_MD_CTX *md_ctx = NULL;
1.1 jsing 682:
683: md_value_len = EVP_MD_size(md);
684: if (md_value_len < 0)
685: goto err;
1.23 ! inoguchi 686:
1.21 inoguchi 687: if (input != NULL) {
1.1 jsing 688: /* Digest must be computed from an input file. */
689: unsigned char buffer[4096];
690: int length;
691:
692: *md_value = malloc(md_value_len);
1.17 tb 693: if (*md_value == NULL)
1.1 jsing 694: goto err;
695:
1.16 tb 696: if ((md_ctx = EVP_MD_CTX_new()) == NULL)
697: goto err;
698:
1.23 ! inoguchi 699: if (!EVP_DigestInit(md_ctx, md))
! 700: goto err;
! 701:
1.1 jsing 702: while ((length = BIO_read(input, buffer, sizeof(buffer))) > 0) {
1.23 ! inoguchi 703: if (!EVP_DigestUpdate(md_ctx, buffer, length))
! 704: goto err;
1.1 jsing 705: }
1.23 ! inoguchi 706:
! 707: if (!EVP_DigestFinal(md_ctx, *md_value, NULL))
! 708: goto err;
1.16 tb 709:
710: EVP_MD_CTX_free(md_ctx);
1.23 ! inoguchi 711: md_ctx = NULL;
! 712:
1.1 jsing 713: } else {
714: /* Digest bytes are specified with digest. */
715: long digest_len;
1.23 ! inoguchi 716:
1.1 jsing 717: *md_value = string_to_hex(digest, &digest_len);
1.21 inoguchi 718: if (*md_value == NULL || md_value_len != digest_len) {
1.1 jsing 719: free(*md_value);
720: *md_value = NULL;
721: BIO_printf(bio_err, "bad digest, %d bytes "
722: "must be specified\n", md_value_len);
723: goto err;
724: }
725: }
726:
727: return md_value_len;
1.23 ! inoguchi 728:
1.15 jsing 729: err:
1.23 ! inoguchi 730: EVP_MD_CTX_free(md_ctx);
1.1 jsing 731: return 0;
732: }
733:
734: static ASN1_INTEGER *
735: create_nonce(int bits)
736: {
737: unsigned char buf[20];
738: ASN1_INTEGER *nonce = NULL;
739: int len = (bits - 1) / 8 + 1;
740: int i;
741:
742: /* Generating random byte sequence. */
743: if (len > (int) sizeof(buf))
744: goto err;
1.3 jsing 745: arc4random_buf(buf, len);
1.1 jsing 746:
747: /* Find the first non-zero byte and creating ASN1_INTEGER object. */
748: for (i = 0; i < len && !buf[i]; ++i)
749: ;
1.21 inoguchi 750: if ((nonce = ASN1_INTEGER_new()) == NULL)
1.1 jsing 751: goto err;
752: free(nonce->data);
753: /* Allocate at least one byte. */
754: nonce->length = len - i;
1.21 inoguchi 755: if ((nonce->data = malloc(nonce->length + 1)) == NULL)
1.1 jsing 756: goto err;
757: memcpy(nonce->data, buf + i, nonce->length);
758:
759: return nonce;
760:
1.15 jsing 761: err:
1.1 jsing 762: BIO_printf(bio_err, "could not create nonce\n");
763: ASN1_INTEGER_free(nonce);
764: return NULL;
765: }
1.20 inoguchi 766:
1.1 jsing 767: /*
768: * Reply-related method definitions.
769: */
770:
771: static int
1.20 inoguchi 772: reply_command(CONF *conf, char *section, char *queryfile, char *passin,
773: char *inkey, char *signer, char *chain, const char *policy, char *in,
774: int token_in, char *out, int token_out, int text)
1.1 jsing 775: {
776: int ret = 0;
777: TS_RESP *response = NULL;
778: BIO *in_bio = NULL;
779: BIO *query_bio = NULL;
780: BIO *inkey_bio = NULL;
781: BIO *signer_bio = NULL;
782: BIO *out_bio = NULL;
783:
784: /* Build response object either from response or query. */
785: if (in != NULL) {
786: if ((in_bio = BIO_new_file(in, "rb")) == NULL)
787: goto end;
788: if (token_in) {
789: /*
790: * We have a ContentInfo (PKCS7) object, add
791: * 'granted' status info around it.
792: */
793: response = read_PKCS7(in_bio);
794: } else {
795: /* We have a ready-made TS_RESP object. */
796: response = d2i_TS_RESP_bio(in_bio, NULL);
797: }
798: } else {
1.21 inoguchi 799: response = create_response(conf, section, queryfile, passin,
800: inkey, signer, chain, policy);
801: if (response != NULL)
1.1 jsing 802: BIO_printf(bio_err, "Response has been generated.\n");
803: else
804: BIO_printf(bio_err, "Response is not generated.\n");
805: }
806: if (response == NULL)
807: goto end;
808:
809: /* Write response either in ASN.1 or text format. */
810: if ((out_bio = BIO_open_with_default(out, "wb", stdout)) == NULL)
811: goto end;
812: if (text) {
813: /* Text output. */
814: if (token_out) {
815: TS_TST_INFO *tst_info = TS_RESP_get_tst_info(response);
816: if (!TS_TST_INFO_print_bio(out_bio, tst_info))
817: goto end;
818: } else {
819: if (!TS_RESP_print_bio(out_bio, response))
820: goto end;
821: }
822: } else {
823: /* ASN.1 DER output. */
824: if (token_out) {
825: PKCS7 *token = TS_RESP_get_token(response);
826: if (!i2d_PKCS7_bio(out_bio, token))
827: goto end;
828: } else {
829: if (!i2d_TS_RESP_bio(out_bio, response))
830: goto end;
831: }
832: }
833:
834: ret = 1;
835:
1.15 jsing 836: end:
1.1 jsing 837: ERR_print_errors(bio_err);
838:
839: /* Clean up. */
840: BIO_free_all(in_bio);
841: BIO_free_all(query_bio);
842: BIO_free_all(inkey_bio);
843: BIO_free_all(signer_bio);
844: BIO_free_all(out_bio);
845: TS_RESP_free(response);
846:
847: return ret;
848: }
849:
850: /* Reads a PKCS7 token and adds default 'granted' status info to it. */
851: static TS_RESP *
1.19 inoguchi 852: read_PKCS7(BIO *in_bio)
1.1 jsing 853: {
854: int ret = 0;
855: PKCS7 *token = NULL;
856: TS_TST_INFO *tst_info = NULL;
857: TS_RESP *resp = NULL;
858: TS_STATUS_INFO *si = NULL;
859:
860: /* Read PKCS7 object and extract the signed time stamp info. */
1.21 inoguchi 861: if ((token = d2i_PKCS7_bio(in_bio, NULL)) == NULL)
1.1 jsing 862: goto end;
1.21 inoguchi 863: if ((tst_info = PKCS7_to_TS_TST_INFO(token)) == NULL)
1.1 jsing 864: goto end;
865:
866: /* Creating response object. */
1.21 inoguchi 867: if ((resp = TS_RESP_new()) == NULL)
1.1 jsing 868: goto end;
869:
870: /* Create granted status info. */
1.21 inoguchi 871: if ((si = TS_STATUS_INFO_new()) == NULL)
1.1 jsing 872: goto end;
873: if (!(ASN1_INTEGER_set(si->status, TS_STATUS_GRANTED)))
874: goto end;
875: if (!TS_RESP_set_status_info(resp, si))
876: goto end;
877:
878: /* Setting encapsulated token. */
879: TS_RESP_set_tst_info(resp, token, tst_info);
880: token = NULL; /* Ownership is lost. */
881: tst_info = NULL; /* Ownership is lost. */
882:
883: ret = 1;
1.15 jsing 884: end:
1.1 jsing 885: PKCS7_free(token);
886: TS_TST_INFO_free(tst_info);
887: if (!ret) {
888: TS_RESP_free(resp);
889: resp = NULL;
890: }
891: TS_STATUS_INFO_free(si);
892: return resp;
893: }
894:
895: static TS_RESP *
1.20 inoguchi 896: create_response(CONF *conf, const char *section, char *queryfile, char *passin,
897: char *inkey, char *signer, char *chain, const char *policy)
1.1 jsing 898: {
899: int ret = 0;
900: TS_RESP *response = NULL;
901: BIO *query_bio = NULL;
902: TS_RESP_CTX *resp_ctx = NULL;
903:
1.21 inoguchi 904: if ((query_bio = BIO_new_file(queryfile, "rb")) == NULL)
1.1 jsing 905: goto end;
906:
907: /* Getting TSA configuration section. */
1.21 inoguchi 908: if ((section = TS_CONF_get_tsa_section(conf, section)) == NULL)
1.1 jsing 909: goto end;
910:
911: /* Setting up response generation context. */
1.21 inoguchi 912: if ((resp_ctx = TS_RESP_CTX_new()) == NULL)
1.1 jsing 913: goto end;
914:
915: /* Setting serial number provider callback. */
916: if (!TS_CONF_set_serial(conf, section, serial_cb, resp_ctx))
917: goto end;
918:
919: /* Setting TSA signer certificate. */
920: if (!TS_CONF_set_signer_cert(conf, section, signer, resp_ctx))
921: goto end;
922:
923: /* Setting TSA signer certificate chain. */
924: if (!TS_CONF_set_certs(conf, section, chain, resp_ctx))
925: goto end;
926:
927: /* Setting TSA signer private key. */
928: if (!TS_CONF_set_signer_key(conf, section, inkey, passin, resp_ctx))
929: goto end;
930:
931: /* Setting default policy OID. */
932: if (!TS_CONF_set_def_policy(conf, section, policy, resp_ctx))
933: goto end;
934:
935: /* Setting acceptable policy OIDs. */
936: if (!TS_CONF_set_policies(conf, section, resp_ctx))
937: goto end;
938:
939: /* Setting the acceptable one-way hash algorithms. */
940: if (!TS_CONF_set_digests(conf, section, resp_ctx))
941: goto end;
942:
943: /* Setting guaranteed time stamp accuracy. */
944: if (!TS_CONF_set_accuracy(conf, section, resp_ctx))
945: goto end;
946:
947: /* Setting the precision of the time. */
948: if (!TS_CONF_set_clock_precision_digits(conf, section, resp_ctx))
949: goto end;
950:
951: /* Setting the ordering flaf if requested. */
952: if (!TS_CONF_set_ordering(conf, section, resp_ctx))
953: goto end;
954:
955: /* Setting the TSA name required flag if requested. */
956: if (!TS_CONF_set_tsa_name(conf, section, resp_ctx))
957: goto end;
958:
959: /* Setting the ESS cert id chain flag if requested. */
960: if (!TS_CONF_set_ess_cert_id_chain(conf, section, resp_ctx))
961: goto end;
962:
963: /* Creating the response. */
1.21 inoguchi 964: if ((response = TS_RESP_create_response(resp_ctx, query_bio)) == NULL)
1.1 jsing 965: goto end;
966:
967: ret = 1;
1.15 jsing 968: end:
1.1 jsing 969: if (!ret) {
970: TS_RESP_free(response);
971: response = NULL;
972: }
973: TS_RESP_CTX_free(resp_ctx);
974: BIO_free_all(query_bio);
975:
976: return response;
977: }
978:
979: static ASN1_INTEGER *
1.19 inoguchi 980: serial_cb(TS_RESP_CTX *ctx, void *data)
1.1 jsing 981: {
982: const char *serial_file = (const char *) data;
983: ASN1_INTEGER *serial = next_serial(serial_file);
984:
1.21 inoguchi 985: if (serial == NULL) {
1.1 jsing 986: TS_RESP_CTX_set_status_info(ctx, TS_STATUS_REJECTION,
987: "Error during serial number "
988: "generation.");
989: TS_RESP_CTX_add_failure_info(ctx,
990: TS_INFO_ADD_INFO_NOT_AVAILABLE);
991: } else
992: save_ts_serial(serial_file, serial);
993:
994: return serial;
995: }
996:
997: static ASN1_INTEGER *
998: next_serial(const char *serialfile)
999: {
1000: int ret = 0;
1001: BIO *in = NULL;
1002: ASN1_INTEGER *serial = NULL;
1003: BIGNUM *bn = NULL;
1004:
1.21 inoguchi 1005: if ((serial = ASN1_INTEGER_new()) == NULL)
1.1 jsing 1006: goto err;
1007:
1.21 inoguchi 1008: if ((in = BIO_new_file(serialfile, "r")) == NULL) {
1.1 jsing 1009: ERR_clear_error();
1010: BIO_printf(bio_err, "Warning: could not open file %s for "
1011: "reading, using serial number: 1\n", serialfile);
1012: if (!ASN1_INTEGER_set(serial, 1))
1013: goto err;
1014: } else {
1015: char buf[1024];
1016: if (!a2i_ASN1_INTEGER(in, serial, buf, sizeof(buf))) {
1017: BIO_printf(bio_err, "unable to load number from %s\n",
1018: serialfile);
1019: goto err;
1020: }
1.21 inoguchi 1021: if ((bn = ASN1_INTEGER_to_BN(serial, NULL)) == NULL)
1.1 jsing 1022: goto err;
1023: ASN1_INTEGER_free(serial);
1024: serial = NULL;
1025: if (!BN_add_word(bn, 1))
1026: goto err;
1.21 inoguchi 1027: if ((serial = BN_to_ASN1_INTEGER(bn, NULL)) == NULL)
1.1 jsing 1028: goto err;
1029: }
1030: ret = 1;
1.15 jsing 1031: err:
1.1 jsing 1032: if (!ret) {
1033: ASN1_INTEGER_free(serial);
1034: serial = NULL;
1035: }
1036: BIO_free_all(in);
1037: BN_free(bn);
1038: return serial;
1039: }
1040:
1041: static int
1.19 inoguchi 1042: save_ts_serial(const char *serialfile, ASN1_INTEGER *serial)
1.1 jsing 1043: {
1044: int ret = 0;
1045: BIO *out = NULL;
1046:
1.21 inoguchi 1047: if ((out = BIO_new_file(serialfile, "w")) == NULL)
1.1 jsing 1048: goto err;
1049: if (i2a_ASN1_INTEGER(out, serial) <= 0)
1050: goto err;
1051: if (BIO_puts(out, "\n") <= 0)
1052: goto err;
1053: ret = 1;
1.15 jsing 1054: err:
1.1 jsing 1055: if (!ret)
1056: BIO_printf(bio_err, "could not save serial number to %s\n",
1057: serialfile);
1058: BIO_free_all(out);
1059: return ret;
1060: }
1061:
1062: /*
1063: * Verify-related method definitions.
1064: */
1065:
1066: static int
1067: verify_command(char *data, char *digest, char *queryfile, char *in,
1068: int token_in, char *ca_path, char *ca_file, char *untrusted)
1069: {
1070: BIO *in_bio = NULL;
1071: PKCS7 *token = NULL;
1072: TS_RESP *response = NULL;
1073: TS_VERIFY_CTX *verify_ctx = NULL;
1074: int ret = 0;
1075:
1076: /* Decode the token (PKCS7) or response (TS_RESP) files. */
1.21 inoguchi 1077: if ((in_bio = BIO_new_file(in, "rb")) == NULL)
1.1 jsing 1078: goto end;
1079: if (token_in) {
1.21 inoguchi 1080: if ((token = d2i_PKCS7_bio(in_bio, NULL)) == NULL)
1.1 jsing 1081: goto end;
1082: } else {
1.21 inoguchi 1083: if ((response = d2i_TS_RESP_bio(in_bio, NULL)) == NULL)
1.1 jsing 1084: goto end;
1085: }
1086:
1.21 inoguchi 1087: if ((verify_ctx = create_verify_ctx(data, digest, queryfile,
1088: ca_path, ca_file, untrusted)) == NULL)
1.1 jsing 1089: goto end;
1090:
1091: /* Checking the token or response against the request. */
1092: ret = token_in ?
1093: TS_RESP_verify_token(verify_ctx, token) :
1094: TS_RESP_verify_response(verify_ctx, response);
1095:
1.15 jsing 1096: end:
1.1 jsing 1097: printf("Verification: ");
1098: if (ret)
1099: printf("OK\n");
1100: else {
1101: printf("FAILED\n");
1102: /* Print errors, if there are any. */
1103: ERR_print_errors(bio_err);
1104: }
1105:
1106: /* Clean up. */
1107: BIO_free_all(in_bio);
1108: PKCS7_free(token);
1109: TS_RESP_free(response);
1110: TS_VERIFY_CTX_free(verify_ctx);
1111: return ret;
1112: }
1113:
1114: static TS_VERIFY_CTX *
1115: create_verify_ctx(char *data, char *digest, char *queryfile, char *ca_path,
1116: char *ca_file, char *untrusted)
1117: {
1118: TS_VERIFY_CTX *ctx = NULL;
1119: BIO *input = NULL;
1120: TS_REQ *request = NULL;
1121: int ret = 0;
1122:
1123: if (data != NULL || digest != NULL) {
1.21 inoguchi 1124: if ((ctx = TS_VERIFY_CTX_new()) == NULL)
1.1 jsing 1125: goto err;
1126: ctx->flags = TS_VFY_VERSION | TS_VFY_SIGNER;
1127: if (data != NULL) {
1128: ctx->flags |= TS_VFY_DATA;
1.21 inoguchi 1129: if ((ctx->data = BIO_new_file(data, "rb")) == NULL)
1.1 jsing 1130: goto err;
1131: } else if (digest != NULL) {
1132: long imprint_len;
1133: ctx->flags |= TS_VFY_IMPRINT;
1.21 inoguchi 1134: if ((ctx->imprint = string_to_hex(digest,
1135: &imprint_len)) == NULL) {
1.1 jsing 1136: BIO_printf(bio_err, "invalid digest string\n");
1137: goto err;
1138: }
1139: ctx->imprint_len = imprint_len;
1140: }
1141: } else if (queryfile != NULL) {
1142: /*
1143: * The request has just to be read, decoded and converted to
1144: * a verify context object.
1145: */
1.21 inoguchi 1146: if ((input = BIO_new_file(queryfile, "rb")) == NULL)
1.1 jsing 1147: goto err;
1.21 inoguchi 1148: if ((request = d2i_TS_REQ_bio(input, NULL)) == NULL)
1.1 jsing 1149: goto err;
1.21 inoguchi 1150: if ((ctx = TS_REQ_to_TS_VERIFY_CTX(request, NULL)) == NULL)
1.1 jsing 1151: goto err;
1152: } else
1153: return NULL;
1154:
1155: /* Add the signature verification flag and arguments. */
1156: ctx->flags |= TS_VFY_SIGNATURE;
1157:
1158: /* Initialising the X509_STORE object. */
1.21 inoguchi 1159: if ((ctx->store = create_cert_store(ca_path, ca_file)) == NULL)
1.1 jsing 1160: goto err;
1161:
1162: /* Loading untrusted certificates. */
1.21 inoguchi 1163: if (untrusted != NULL &&
1164: (ctx->certs = TS_CONF_load_certs(untrusted)) == NULL)
1.1 jsing 1165: goto err;
1166:
1167: ret = 1;
1.15 jsing 1168: err:
1.1 jsing 1169: if (!ret) {
1170: TS_VERIFY_CTX_free(ctx);
1171: ctx = NULL;
1172: }
1173: BIO_free_all(input);
1174: TS_REQ_free(request);
1175: return ctx;
1176: }
1177:
1178: static X509_STORE *
1179: create_cert_store(char *ca_path, char *ca_file)
1180: {
1181: X509_STORE *cert_ctx = NULL;
1182: X509_LOOKUP *lookup = NULL;
1183: int i;
1184:
1185: /* Creating the X509_STORE object. */
1.22 inoguchi 1186: if ((cert_ctx = X509_STORE_new()) == NULL)
1187: goto err;
1.1 jsing 1188:
1189: /* Setting the callback for certificate chain verification. */
1190: X509_STORE_set_verify_cb(cert_ctx, verify_cb);
1191:
1192: /* Adding a trusted certificate directory source. */
1.21 inoguchi 1193: if (ca_path != NULL) {
1.1 jsing 1194: lookup = X509_STORE_add_lookup(cert_ctx,
1195: X509_LOOKUP_hash_dir());
1196: if (lookup == NULL) {
1197: BIO_printf(bio_err, "memory allocation failure\n");
1198: goto err;
1199: }
1200: i = X509_LOOKUP_add_dir(lookup, ca_path, X509_FILETYPE_PEM);
1201: if (!i) {
1202: BIO_printf(bio_err, "Error loading directory %s\n",
1203: ca_path);
1204: goto err;
1205: }
1206: }
1207: /* Adding a trusted certificate file source. */
1.21 inoguchi 1208: if (ca_file != NULL) {
1.1 jsing 1209: lookup = X509_STORE_add_lookup(cert_ctx, X509_LOOKUP_file());
1210: if (lookup == NULL) {
1211: BIO_printf(bio_err, "memory allocation failure\n");
1212: goto err;
1213: }
1214: i = X509_LOOKUP_load_file(lookup, ca_file, X509_FILETYPE_PEM);
1215: if (!i) {
1216: BIO_printf(bio_err, "Error loading file %s\n", ca_file);
1217: goto err;
1218: }
1219: }
1220: return cert_ctx;
1.15 jsing 1221: err:
1.1 jsing 1222: X509_STORE_free(cert_ctx);
1223: return NULL;
1224: }
1225:
1226: static int
1.19 inoguchi 1227: verify_cb(int ok, X509_STORE_CTX *ctx)
1.1 jsing 1228: {
1229: /*
1230: char buf[256];
1231:
1232: if (!ok)
1233: {
1234: X509_NAME_oneline(X509_get_subject_name(ctx->current_cert),
1235: buf, sizeof(buf));
1236: printf("%s\n", buf);
1237: printf("error %d at %d depth lookup: %s\n",
1238: ctx->error, ctx->error_depth,
1239: X509_verify_cert_error_string(ctx->error));
1240: }
1241: */
1242:
1243: return ok;
1244: }
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