Annotation of src/usr.bin/openssl/verify.c, Revision 1.6
1.6 ! doug 1: /* $OpenBSD: verify.c,v 1.5 2015/10/10 22:28:51 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:
71: static int cb(int ok, X509_STORE_CTX * ctx);
72: static int check(X509_STORE * ctx, char *file, STACK_OF(X509) * uchain,
1.4 bcook 73: STACK_OF(X509) * tchain, STACK_OF(X509_CRL) * crls);
1.1 jsing 74: static int v_verbose = 0, vflags = 0;
75:
76: int
77: verify_main(int argc, char **argv)
78: {
79: 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: X509_VERIFY_PARAM *vpm = NULL;
1.5 doug 87:
88: if (single_execution) {
1.6 ! doug 89: if (pledge("stdio rpath", NULL) == -1) {
1.5 doug 90: perror("pledge");
1.6 ! doug 91: exit(1);
! 92: }
1.5 doug 93: }
1.1 jsing 94:
95: cert_ctx = X509_STORE_new();
96: if (cert_ctx == NULL)
97: goto end;
98: X509_STORE_set_verify_cb(cert_ctx, cb);
99:
100: argc--;
101: argv++;
102: for (;;) {
103: if (argc >= 1) {
104: if (strcmp(*argv, "-CApath") == 0) {
105: if (argc-- < 1)
106: goto end;
107: CApath = *(++argv);
108: } else if (strcmp(*argv, "-CAfile") == 0) {
109: if (argc-- < 1)
110: goto end;
111: CAfile = *(++argv);
112: } else if (args_verify(&argv, &argc, &badarg, bio_err,
113: &vpm)) {
114: if (badarg)
115: goto end;
116: continue;
117: } else if (strcmp(*argv, "-untrusted") == 0) {
118: if (argc-- < 1)
119: goto end;
120: untfile = *(++argv);
121: } else if (strcmp(*argv, "-trusted") == 0) {
122: if (argc-- < 1)
123: goto end;
124: trustfile = *(++argv);
125: } else if (strcmp(*argv, "-CRLfile") == 0) {
126: if (argc-- < 1)
127: goto end;
128: crlfile = *(++argv);
129: }
130: else if (strcmp(*argv, "-help") == 0)
131: goto end;
132: else if (strcmp(*argv, "-verbose") == 0)
133: v_verbose = 1;
134: else if (argv[0][0] == '-')
135: goto end;
136: else
137: break;
138: argc--;
139: argv++;
140: } else
141: break;
142: }
143:
144: if (vpm)
145: X509_STORE_set1_param(cert_ctx, vpm);
146:
147: lookup = X509_STORE_add_lookup(cert_ctx, X509_LOOKUP_file());
148: if (lookup == NULL)
149: abort();
150: if (CAfile) {
151: i = X509_LOOKUP_load_file(lookup, CAfile, X509_FILETYPE_PEM);
152: 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: lookup = X509_STORE_add_lookup(cert_ctx, X509_LOOKUP_hash_dir());
161: if (lookup == NULL)
162: abort();
163: 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: X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
172:
173: ERR_clear_error();
174:
175: if (untfile) {
176: untrusted = load_certs(bio_err, untfile, FORMAT_PEM,
1.4 bcook 177: NULL, "untrusted certificates");
1.1 jsing 178: if (!untrusted)
179: goto end;
180: }
181: if (trustfile) {
182: trusted = load_certs(bio_err, trustfile, FORMAT_PEM,
1.4 bcook 183: NULL, "trusted certificates");
1.1 jsing 184: if (!trusted)
185: goto end;
186: }
187: if (crlfile) {
188: crls = load_crls(bio_err, crlfile, FORMAT_PEM,
1.4 bcook 189: NULL, "other CRLs");
1.1 jsing 190: if (!crls)
191: goto end;
192: }
193: ret = 0;
194: if (argc < 1) {
1.4 bcook 195: if (1 != check(cert_ctx, NULL, untrusted, trusted, crls))
1.1 jsing 196: ret = -1;
197: } else {
198: for (i = 0; i < argc; i++)
199: if (1 != check(cert_ctx, argv[i], untrusted, trusted,
1.4 bcook 200: crls))
1.1 jsing 201: ret = -1;
202: }
203:
204: end:
205: if (ret == 1) {
206: BIO_printf(bio_err, "usage: verify [-verbose] [-CApath path] [-CAfile file] [-purpose purpose] [-crl_check]");
207: BIO_printf(bio_err, " [-attime timestamp]");
208: BIO_printf(bio_err, " cert1 cert2 ...\n");
209:
210: BIO_printf(bio_err, "recognized usages:\n");
211: for (i = 0; i < X509_PURPOSE_get_count(); i++) {
212: X509_PURPOSE *ptmp;
213: ptmp = X509_PURPOSE_get0(i);
214: BIO_printf(bio_err, "\t%-10s\t%s\n",
215: X509_PURPOSE_get0_sname(ptmp),
216: X509_PURPOSE_get0_name(ptmp));
217: }
218: }
219: if (vpm)
220: X509_VERIFY_PARAM_free(vpm);
221: if (cert_ctx != NULL)
222: X509_STORE_free(cert_ctx);
223: sk_X509_pop_free(untrusted, X509_free);
224: sk_X509_pop_free(trusted, X509_free);
225: sk_X509_CRL_pop_free(crls, X509_CRL_free);
226:
227: return (ret < 0 ? 2 : ret);
228: }
229:
230: static int
231: check(X509_STORE * ctx, char *file, STACK_OF(X509) * uchain,
1.4 bcook 232: STACK_OF(X509) * tchain, STACK_OF(X509_CRL) * crls)
1.1 jsing 233: {
234: X509 *x = NULL;
235: int i = 0, ret = 0;
236: X509_STORE_CTX *csc;
237:
1.4 bcook 238: x = load_cert(bio_err, file, FORMAT_PEM, NULL, "certificate file");
1.1 jsing 239: if (x == NULL)
240: goto end;
241: fprintf(stdout, "%s: ", (file == NULL) ? "stdin" : file);
242:
243: csc = X509_STORE_CTX_new();
244: if (csc == NULL) {
245: ERR_print_errors(bio_err);
246: goto end;
247: }
248: X509_STORE_set_flags(ctx, vflags);
249: if (!X509_STORE_CTX_init(csc, ctx, x, uchain)) {
250: ERR_print_errors(bio_err);
251: goto end;
252: }
253: if (tchain)
254: X509_STORE_CTX_trusted_stack(csc, tchain);
255: if (crls)
256: X509_STORE_CTX_set0_crls(csc, crls);
257: i = X509_verify_cert(csc);
258: X509_STORE_CTX_free(csc);
259:
260: ret = 0;
261:
262: end:
263: if (i > 0) {
264: fprintf(stdout, "OK\n");
265: ret = 1;
266: } else
267: ERR_print_errors(bio_err);
268: if (x != NULL)
269: X509_free(x);
270:
271: return (ret);
272: }
273:
274: static int
275: cb(int ok, X509_STORE_CTX * ctx)
276: {
277: int cert_error = X509_STORE_CTX_get_error(ctx);
278: X509 *current_cert = X509_STORE_CTX_get_current_cert(ctx);
279:
280: 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: if (cert_error == X509_V_OK && ok == 2)
320: policies_print(NULL, ctx);
321: if (!v_verbose)
322: ERR_clear_error();
323: return (ok);
324: }
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