Annotation of src/usr.bin/openssl/verify.c, Revision 1.5
1.5 ! doug 1: /* $OpenBSD: verify.c,v 1.4 2015/09/11 14:30:23 bcook 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) {
! 89: if (pledge("stdio rpath", NULL) == -1)
! 90: perror("pledge");
! 91: }
1.1 jsing 92:
93: cert_ctx = X509_STORE_new();
94: if (cert_ctx == NULL)
95: goto end;
96: X509_STORE_set_verify_cb(cert_ctx, cb);
97:
98: argc--;
99: argv++;
100: for (;;) {
101: if (argc >= 1) {
102: if (strcmp(*argv, "-CApath") == 0) {
103: if (argc-- < 1)
104: goto end;
105: CApath = *(++argv);
106: } else if (strcmp(*argv, "-CAfile") == 0) {
107: if (argc-- < 1)
108: goto end;
109: CAfile = *(++argv);
110: } else if (args_verify(&argv, &argc, &badarg, bio_err,
111: &vpm)) {
112: if (badarg)
113: goto end;
114: continue;
115: } else if (strcmp(*argv, "-untrusted") == 0) {
116: if (argc-- < 1)
117: goto end;
118: untfile = *(++argv);
119: } else if (strcmp(*argv, "-trusted") == 0) {
120: if (argc-- < 1)
121: goto end;
122: trustfile = *(++argv);
123: } else if (strcmp(*argv, "-CRLfile") == 0) {
124: if (argc-- < 1)
125: goto end;
126: crlfile = *(++argv);
127: }
128: else if (strcmp(*argv, "-help") == 0)
129: goto end;
130: else if (strcmp(*argv, "-verbose") == 0)
131: v_verbose = 1;
132: else if (argv[0][0] == '-')
133: goto end;
134: else
135: break;
136: argc--;
137: argv++;
138: } else
139: break;
140: }
141:
142: if (vpm)
143: X509_STORE_set1_param(cert_ctx, vpm);
144:
145: lookup = X509_STORE_add_lookup(cert_ctx, X509_LOOKUP_file());
146: if (lookup == NULL)
147: abort();
148: if (CAfile) {
149: i = X509_LOOKUP_load_file(lookup, CAfile, X509_FILETYPE_PEM);
150: if (!i) {
151: BIO_printf(bio_err, "Error loading file %s\n", CAfile);
152: ERR_print_errors(bio_err);
153: goto end;
154: }
155: } else
156: X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
157:
158: lookup = X509_STORE_add_lookup(cert_ctx, X509_LOOKUP_hash_dir());
159: if (lookup == NULL)
160: abort();
161: if (CApath) {
162: i = X509_LOOKUP_add_dir(lookup, CApath, X509_FILETYPE_PEM);
163: if (!i) {
164: BIO_printf(bio_err, "Error loading directory %s\n", CApath);
165: ERR_print_errors(bio_err);
166: goto end;
167: }
168: } else
169: X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
170:
171: ERR_clear_error();
172:
173: if (untfile) {
174: untrusted = load_certs(bio_err, untfile, FORMAT_PEM,
1.4 bcook 175: NULL, "untrusted certificates");
1.1 jsing 176: if (!untrusted)
177: goto end;
178: }
179: if (trustfile) {
180: trusted = load_certs(bio_err, trustfile, FORMAT_PEM,
1.4 bcook 181: NULL, "trusted certificates");
1.1 jsing 182: if (!trusted)
183: goto end;
184: }
185: if (crlfile) {
186: crls = load_crls(bio_err, crlfile, FORMAT_PEM,
1.4 bcook 187: NULL, "other CRLs");
1.1 jsing 188: if (!crls)
189: goto end;
190: }
191: ret = 0;
192: if (argc < 1) {
1.4 bcook 193: if (1 != check(cert_ctx, NULL, untrusted, trusted, crls))
1.1 jsing 194: ret = -1;
195: } else {
196: for (i = 0; i < argc; i++)
197: if (1 != check(cert_ctx, argv[i], untrusted, trusted,
1.4 bcook 198: crls))
1.1 jsing 199: ret = -1;
200: }
201:
202: end:
203: if (ret == 1) {
204: BIO_printf(bio_err, "usage: verify [-verbose] [-CApath path] [-CAfile file] [-purpose purpose] [-crl_check]");
205: BIO_printf(bio_err, " [-attime timestamp]");
206: BIO_printf(bio_err, " cert1 cert2 ...\n");
207:
208: BIO_printf(bio_err, "recognized usages:\n");
209: for (i = 0; i < X509_PURPOSE_get_count(); i++) {
210: X509_PURPOSE *ptmp;
211: ptmp = X509_PURPOSE_get0(i);
212: BIO_printf(bio_err, "\t%-10s\t%s\n",
213: X509_PURPOSE_get0_sname(ptmp),
214: X509_PURPOSE_get0_name(ptmp));
215: }
216: }
217: if (vpm)
218: X509_VERIFY_PARAM_free(vpm);
219: if (cert_ctx != NULL)
220: X509_STORE_free(cert_ctx);
221: sk_X509_pop_free(untrusted, X509_free);
222: sk_X509_pop_free(trusted, X509_free);
223: sk_X509_CRL_pop_free(crls, X509_CRL_free);
224:
225: return (ret < 0 ? 2 : ret);
226: }
227:
228: static int
229: check(X509_STORE * ctx, char *file, STACK_OF(X509) * uchain,
1.4 bcook 230: STACK_OF(X509) * tchain, STACK_OF(X509_CRL) * crls)
1.1 jsing 231: {
232: X509 *x = NULL;
233: int i = 0, ret = 0;
234: X509_STORE_CTX *csc;
235:
1.4 bcook 236: x = load_cert(bio_err, file, FORMAT_PEM, NULL, "certificate file");
1.1 jsing 237: if (x == NULL)
238: goto end;
239: fprintf(stdout, "%s: ", (file == NULL) ? "stdin" : file);
240:
241: csc = X509_STORE_CTX_new();
242: if (csc == NULL) {
243: ERR_print_errors(bio_err);
244: goto end;
245: }
246: X509_STORE_set_flags(ctx, vflags);
247: if (!X509_STORE_CTX_init(csc, ctx, x, uchain)) {
248: ERR_print_errors(bio_err);
249: goto end;
250: }
251: if (tchain)
252: X509_STORE_CTX_trusted_stack(csc, tchain);
253: if (crls)
254: X509_STORE_CTX_set0_crls(csc, crls);
255: i = X509_verify_cert(csc);
256: X509_STORE_CTX_free(csc);
257:
258: ret = 0;
259:
260: end:
261: if (i > 0) {
262: fprintf(stdout, "OK\n");
263: ret = 1;
264: } else
265: ERR_print_errors(bio_err);
266: if (x != NULL)
267: X509_free(x);
268:
269: return (ret);
270: }
271:
272: static int
273: cb(int ok, X509_STORE_CTX * ctx)
274: {
275: int cert_error = X509_STORE_CTX_get_error(ctx);
276: X509 *current_cert = X509_STORE_CTX_get_current_cert(ctx);
277:
278: if (!ok) {
279: if (current_cert) {
280: X509_NAME_print_ex_fp(stdout,
281: X509_get_subject_name(current_cert),
282: 0, XN_FLAG_ONELINE);
283: printf("\n");
284: }
285: printf("%serror %d at %d depth lookup:%s\n",
286: X509_STORE_CTX_get0_parent_ctx(ctx) ? "[CRL path]" : "",
287: cert_error,
288: X509_STORE_CTX_get_error_depth(ctx),
289: X509_verify_cert_error_string(cert_error));
290: switch (cert_error) {
291: case X509_V_ERR_NO_EXPLICIT_POLICY:
292: policies_print(NULL, ctx);
293: case X509_V_ERR_CERT_HAS_EXPIRED:
294:
295: /*
296: * since we are just checking the certificates, it is
297: * ok if they are self signed. But we should still
298: * warn the user.
299: */
300:
301: case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
302: /* Continue after extension errors too */
303: case X509_V_ERR_INVALID_CA:
304: case X509_V_ERR_INVALID_NON_CA:
305: case X509_V_ERR_PATH_LENGTH_EXCEEDED:
306: case X509_V_ERR_INVALID_PURPOSE:
307: case X509_V_ERR_CRL_HAS_EXPIRED:
308: case X509_V_ERR_CRL_NOT_YET_VALID:
309: case X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION:
310: ok = 1;
311:
312: }
313:
314: return ok;
315:
316: }
317: if (cert_error == X509_V_OK && ok == 2)
318: policies_print(NULL, ctx);
319: if (!v_verbose)
320: ERR_clear_error();
321: return (ok);
322: }