GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: usr.bin/openssl/verify.c Lines: 85 139 61.2 %
Date: 2017-11-13 Branches: 46 113 40.7 %

Line Branch Exec Source
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/* $OpenBSD: verify.c,v 1.6 2015/10/17 15:00:11 doug Exp $ */
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
71
static int cb(int ok, X509_STORE_CTX * ctx);
72
static int check(X509_STORE * ctx, char *file, STACK_OF(X509) * uchain,
73
    STACK_OF(X509) * tchain, STACK_OF(X509_CRL) * crls);
74
static int v_verbose = 0, vflags = 0;
75
76
int
77
verify_main(int argc, char **argv)
78
{
79
8
	int i, ret = 1, badarg = 0;
80
	char *CApath = NULL, *CAfile = NULL;
81
	char *untfile = NULL, *trustfile = NULL, *crlfile = NULL;
82
	STACK_OF(X509) * untrusted = NULL, *trusted = NULL;
83
	STACK_OF(X509_CRL) * crls = NULL;
84
	X509_STORE *cert_ctx = NULL;
85
	X509_LOOKUP *lookup = NULL;
86
8
	X509_VERIFY_PARAM *vpm = NULL;
87
88
8
	if (single_execution) {
89
8
		if (pledge("stdio rpath flock cpath wpath", NULL) == -1) {
90
			perror("pledge");
91
			exit(1);
92
		}
93
	}
94
95
8
	cert_ctx = X509_STORE_new();
96
8
	if (cert_ctx == NULL)
97
		goto end;
98
8
	X509_STORE_set_verify_cb(cert_ctx, cb);
99
100
8
	argc--;
101
8
	argv++;
102
16
	for (;;) {
103
16
		if (argc >= 1) {
104
16
			if (strcmp(*argv, "-CApath") == 0) {
105
				if (argc-- < 1)
106
					goto end;
107
				CApath = *(++argv);
108
16
			} else if (strcmp(*argv, "-CAfile") == 0) {
109
4
				if (argc-- < 1)
110
					goto end;
111
4
				CAfile = *(++argv);
112
16
			} else if (args_verify(&argv, &argc, &badarg, bio_err,
113
			    &vpm)) {
114
				if (badarg)
115
					goto end;
116
				continue;
117
12
			} else if (strcmp(*argv, "-untrusted") == 0) {
118
				if (argc-- < 1)
119
					goto end;
120
				untfile = *(++argv);
121
12
			} else if (strcmp(*argv, "-trusted") == 0) {
122
				if (argc-- < 1)
123
					goto end;
124
				trustfile = *(++argv);
125
12
			} else if (strcmp(*argv, "-CRLfile") == 0) {
126
				if (argc-- < 1)
127
					goto end;
128
				crlfile = *(++argv);
129
			}
130
12
			else if (strcmp(*argv, "-help") == 0)
131
				goto end;
132
8
			else if (strcmp(*argv, "-verbose") == 0)
133
4
				v_verbose = 1;
134
4
			else if (argv[0][0] == '-')
135
				goto end;
136
			else
137
				break;
138
8
			argc--;
139
8
			argv++;
140
		} else
141
			break;
142
	}
143
144
4
	if (vpm)
145
		X509_STORE_set1_param(cert_ctx, vpm);
146
147
4
	lookup = X509_STORE_add_lookup(cert_ctx, X509_LOOKUP_file());
148
4
	if (lookup == NULL)
149
		abort();
150
4
	if (CAfile) {
151
4
		i = X509_LOOKUP_load_file(lookup, CAfile, X509_FILETYPE_PEM);
152
4
		if (!i) {
153
			BIO_printf(bio_err, "Error loading file %s\n", CAfile);
154
			ERR_print_errors(bio_err);
155
			goto end;
156
		}
157
	} else
158
		X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
159
160
4
	lookup = X509_STORE_add_lookup(cert_ctx, X509_LOOKUP_hash_dir());
161
4
	if (lookup == NULL)
162
		abort();
163
4
	if (CApath) {
164
		i = X509_LOOKUP_add_dir(lookup, CApath, X509_FILETYPE_PEM);
165
		if (!i) {
166
			BIO_printf(bio_err, "Error loading directory %s\n", CApath);
167
			ERR_print_errors(bio_err);
168
			goto end;
169
		}
170
	} else
171
4
		X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
172
173
4
	ERR_clear_error();
174
175
4
	if (untfile) {
176
		untrusted = load_certs(bio_err, untfile, FORMAT_PEM,
177
		    NULL, "untrusted certificates");
178
		if (!untrusted)
179
			goto end;
180
	}
181
4
	if (trustfile) {
182
		trusted = load_certs(bio_err, trustfile, FORMAT_PEM,
183
		    NULL, "trusted certificates");
184
		if (!trusted)
185
			goto end;
186
	}
187
4
	if (crlfile) {
188
		crls = load_crls(bio_err, crlfile, FORMAT_PEM,
189
		    NULL, "other CRLs");
190
		if (!crls)
191
			goto end;
192
	}
193
	ret = 0;
194
4
	if (argc < 1) {
195
		if (1 != check(cert_ctx, NULL, untrusted, trusted, crls))
196
			ret = -1;
197
	} else {
198
16
		for (i = 0; i < argc; i++)
199
4
			if (1 != check(cert_ctx, argv[i], untrusted, trusted,
200
			    crls))
201
				ret = -1;
202
	}
203
204
end:
205
8
	if (ret == 1) {
206
4
		BIO_printf(bio_err, "usage: verify [-verbose] [-CApath path] [-CAfile file] [-purpose purpose] [-crl_check]");
207
4
		BIO_printf(bio_err, " [-attime timestamp]");
208
4
		BIO_printf(bio_err, " cert1 cert2 ...\n");
209
210
4
		BIO_printf(bio_err, "recognized usages:\n");
211
80
		for (i = 0; i < X509_PURPOSE_get_count(); i++) {
212
			X509_PURPOSE *ptmp;
213
36
			ptmp = X509_PURPOSE_get0(i);
214
72
			BIO_printf(bio_err, "\t%-10s\t%s\n",
215
36
			    X509_PURPOSE_get0_sname(ptmp),
216
36
			    X509_PURPOSE_get0_name(ptmp));
217
		}
218
	}
219
8
	if (vpm)
220
		X509_VERIFY_PARAM_free(vpm);
221
8
	if (cert_ctx != NULL)
222
8
		X509_STORE_free(cert_ctx);
223
8
	sk_X509_pop_free(untrusted, X509_free);
224
8
	sk_X509_pop_free(trusted, X509_free);
225
8
	sk_X509_CRL_pop_free(crls, X509_CRL_free);
226
227
16
	return (ret < 0 ? 2 : ret);
228
8
}
229
230
static int
231
check(X509_STORE * ctx, char *file, STACK_OF(X509) * uchain,
232
    STACK_OF(X509) * tchain, STACK_OF(X509_CRL) * crls)
233
{
234
	X509 *x = NULL;
235
	int i = 0, ret = 0;
236
	X509_STORE_CTX *csc;
237
238
8
	x = load_cert(bio_err, file, FORMAT_PEM, NULL, "certificate file");
239
4
	if (x == NULL)
240
		goto end;
241
4
	fprintf(stdout, "%s: ", (file == NULL) ? "stdin" : file);
242
243
4
	csc = X509_STORE_CTX_new();
244
4
	if (csc == NULL) {
245
		ERR_print_errors(bio_err);
246
		goto end;
247
	}
248
4
	X509_STORE_set_flags(ctx, vflags);
249
4
	if (!X509_STORE_CTX_init(csc, ctx, x, uchain)) {
250
		ERR_print_errors(bio_err);
251
		goto end;
252
	}
253
4
	if (tchain)
254
		X509_STORE_CTX_trusted_stack(csc, tchain);
255
4
	if (crls)
256
		X509_STORE_CTX_set0_crls(csc, crls);
257
4
	i = X509_verify_cert(csc);
258
4
	X509_STORE_CTX_free(csc);
259
260
4
	ret = 0;
261
262
end:
263
4
	if (i > 0) {
264
4
		fprintf(stdout, "OK\n");
265
		ret = 1;
266
4
	} else
267
		ERR_print_errors(bio_err);
268
4
	if (x != NULL)
269
4
		X509_free(x);
270
271
4
	return (ret);
272
}
273
274
static int
275
cb(int ok, X509_STORE_CTX * ctx)
276
{
277
16
	int cert_error = X509_STORE_CTX_get_error(ctx);
278
8
	X509 *current_cert = X509_STORE_CTX_get_current_cert(ctx);
279
280
8
	if (!ok) {
281
		if (current_cert) {
282
			X509_NAME_print_ex_fp(stdout,
283
			    X509_get_subject_name(current_cert),
284
			    0, XN_FLAG_ONELINE);
285
			printf("\n");
286
		}
287
		printf("%serror %d at %d depth lookup:%s\n",
288
		    X509_STORE_CTX_get0_parent_ctx(ctx) ? "[CRL path]" : "",
289
		    cert_error,
290
		    X509_STORE_CTX_get_error_depth(ctx),
291
		    X509_verify_cert_error_string(cert_error));
292
		switch (cert_error) {
293
		case X509_V_ERR_NO_EXPLICIT_POLICY:
294
			policies_print(NULL, ctx);
295
		case X509_V_ERR_CERT_HAS_EXPIRED:
296
297
			/*
298
			 * since we are just checking the certificates, it is
299
			 * ok if they are self signed. But we should still
300
			 * warn the user.
301
			 */
302
303
		case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
304
			/* Continue after extension errors too */
305
		case X509_V_ERR_INVALID_CA:
306
		case X509_V_ERR_INVALID_NON_CA:
307
		case X509_V_ERR_PATH_LENGTH_EXCEEDED:
308
		case X509_V_ERR_INVALID_PURPOSE:
309
		case X509_V_ERR_CRL_HAS_EXPIRED:
310
		case X509_V_ERR_CRL_NOT_YET_VALID:
311
		case X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION:
312
			ok = 1;
313
314
		}
315
316
		return ok;
317
318
	}
319
8
	if (cert_error == X509_V_OK && ok == 2)
320
		policies_print(NULL, ctx);
321
8
	if (!v_verbose)
322
		ERR_clear_error();
323
8
	return (ok);
324
8
}