1 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
2 * project 1999. */
3 /* ====================================================================
4 * Copyright (c) 1999-2004 The OpenSSL Project. All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
16 * distribution.
17 *
18 * 3. All advertising materials mentioning features or use of this
19 * software must display the following acknowledgment:
20 * "This product includes software developed by the OpenSSL Project
21 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
22 *
23 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
24 * endorse or promote products derived from this software without
25 * prior written permission. For written permission, please contact
26 * licensing@OpenSSL.org.
27 *
28 * 5. Products derived from this software may not be called "OpenSSL"
29 * nor may "OpenSSL" appear in their names without prior written
30 * permission of the OpenSSL Project.
31 *
32 * 6. Redistributions of any form whatsoever must retain the following
33 * acknowledgment:
34 * "This product includes software developed by the OpenSSL Project
35 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
36 *
37 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
38 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
39 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
40 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
41 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
42 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
43 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
44 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
45 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
46 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
47 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
48 * OF THE POSSIBILITY OF SUCH DAMAGE.
49 * ====================================================================
50 *
51 * This product includes cryptographic software written by Eric Young
52 * (eay@cryptsoft.com). This product includes software written by Tim
53 * Hudson (tjh@cryptsoft.com). */
54
55 #include <string.h>
56 #include <strings.h>
57
58 #include <openssl/crypto.h>
59 #include <openssl/x509.h>
60 #include <openssl/x509v3.h>
61
62
63 static const char *const names[] =
64 {
65 "a", "b", ".", "*", "@",
66 ".a", "a.", ".b", "b.", ".*", "*.", "*@", "@*", "a@", "@a", "b@", "..",
67 "@@", "**", "*.com", "*com", "*.*.com", "*com", "com*", "*example.com",
68 "*@example.com", "test@*.example.com", "example.com", "www.example.com",
69 "test.www.example.com", "*.example.com", "*.www.example.com",
70 "test.*.example.com", "www.*.com",
71 ".www.example.com", "*www.example.com",
72 "example.net", "xn--rger-koa.example.com",
73 "a.example.com", "b.example.com",
74 "postmaster@example.com", "Postmaster@example.com",
75 "postmaster@EXAMPLE.COM",
76 NULL
77 };
78
79 static const char *const exceptions[] =
80 {
81 "set CN: host: [*.example.com] matches [a.example.com]",
82 "set CN: host: [*.example.com] matches [b.example.com]",
83 "set CN: host: [*.example.com] matches [www.example.com]",
84 "set CN: host: [*.example.com] matches [xn--rger-koa.example.com]",
85 "set CN: host: [*.www.example.com] matches [test.www.example.com]",
86 "set CN: host: [*.www.example.com] matches [.www.example.com]",
87 "set CN: host: [*www.example.com] matches [www.example.com]",
88 "set CN: host: [test.www.example.com] matches [.www.example.com]",
89 "set CN: host-no-wildcards: [*.www.example.com] matches [.www.example.com]",
90 "set CN: host-no-wildcards: [test.www.example.com] matches [.www.example.com]",
91 "set emailAddress: email: [postmaster@example.com] does not match [Postmaster@example.com]",
92 "set emailAddress: email: [postmaster@EXAMPLE.COM] does not match [Postmaster@example.com]",
93 "set emailAddress: email: [Postmaster@example.com] does not match [postmaster@example.com]",
94 "set emailAddress: email: [Postmaster@example.com] does not match [postmaster@EXAMPLE.COM]",
95 "set dnsName: host: [*.example.com] matches [www.example.com]",
96 "set dnsName: host: [*.example.com] matches [a.example.com]",
97 "set dnsName: host: [*.example.com] matches [b.example.com]",
98 "set dnsName: host: [*.example.com] matches [xn--rger-koa.example.com]",
99 "set dnsName: host: [*.www.example.com] matches [test.www.example.com]",
100 "set dnsName: host-no-wildcards: [*.www.example.com] matches [.www.example.com]",
101 "set dnsName: host-no-wildcards: [test.www.example.com] matches [.www.example.com]",
102 "set dnsName: host: [*.www.example.com] matches [.www.example.com]",
103 "set dnsName: host: [*www.example.com] matches [www.example.com]",
104 "set dnsName: host: [test.www.example.com] matches [.www.example.com]",
105 "set rfc822Name: email: [postmaster@example.com] does not match [Postmaster@example.com]",
106 "set rfc822Name: email: [Postmaster@example.com] does not match [postmaster@example.com]",
107 "set rfc822Name: email: [Postmaster@example.com] does not match [postmaster@EXAMPLE.COM]",
108 "set rfc822Name: email: [postmaster@EXAMPLE.COM] does not match [Postmaster@example.com]",
109 NULL
110 };
111
is_exception(const char * msg)112 static int is_exception(const char *msg)
113 {
114 const char *const *p;
115 for (p = exceptions; *p; ++p)
116 if (strcmp(msg, *p) == 0)
117 return 1;
118 return 0;
119 }
120
set_cn(X509 * crt,...)121 static int set_cn(X509 *crt, ...)
122 {
123 int ret = 0;
124 X509_NAME *n = NULL;
125 va_list ap;
126 va_start(ap, crt);
127 n = X509_NAME_new();
128 if (n == NULL)
129 goto out;
130 while (1) {
131 int nid;
132 const char *name;
133 nid = va_arg(ap, int);
134 if (nid == 0)
135 break;
136 name = va_arg(ap, const char *);
137 if (!X509_NAME_add_entry_by_NID(n, nid, MBSTRING_ASC,
138 (unsigned char *)name,
139 -1, -1, 1))
140 goto out;
141 }
142 if (!X509_set_subject_name(crt, n))
143 goto out;
144 ret = 1;
145 out:
146 X509_NAME_free(n);
147 va_end(ap);
148 return ret;
149 }
150
151 /*
152 int X509_add_ext(X509 *x, X509_EXTENSION *ex, int loc);
153 X509_EXTENSION *X509_EXTENSION_create_by_NID(X509_EXTENSION **ex,
154 int nid, int crit, ASN1_OCTET_STRING *data);
155 int X509_add_ext(X509 *x, X509_EXTENSION *ex, int loc);
156 */
157
set_altname(X509 * crt,...)158 static int set_altname(X509 *crt, ...)
159 {
160 int ret = 0;
161 GENERAL_NAMES *gens = NULL;
162 GENERAL_NAME *gen = NULL;
163 ASN1_IA5STRING *ia5 = NULL;
164 va_list ap;
165 va_start(ap, crt);
166 gens = sk_GENERAL_NAME_new_null();
167 if (gens == NULL)
168 goto out;
169 while (1) {
170 int type;
171 const char *name;
172 type = va_arg(ap, int);
173 if (type == 0)
174 break;
175 name = va_arg(ap, const char *);
176
177 gen = GENERAL_NAME_new();
178 if (gen == NULL)
179 goto out;
180 ia5 = ASN1_IA5STRING_new();
181 if (ia5 == NULL)
182 goto out;
183 if (!ASN1_STRING_set(ia5, name, -1))
184 goto out;
185 switch (type)
186 {
187 case GEN_EMAIL:
188 case GEN_DNS:
189 GENERAL_NAME_set0_value(gen, type, ia5);
190 ia5 = NULL;
191 break;
192 default:
193 abort();
194 }
195 sk_GENERAL_NAME_push(gens, gen);
196 gen = NULL;
197 }
198 if (!X509_add1_ext_i2d(crt, NID_subject_alt_name, gens, 0, 0))
199 goto out;
200 ret = 1;
201 out:
202 ASN1_IA5STRING_free(ia5);
203 GENERAL_NAME_free(gen);
204 GENERAL_NAMES_free(gens);
205 va_end(ap);
206 return ret;
207 }
208
set_cn1(X509 * crt,const char * name)209 static int set_cn1(X509 *crt, const char *name)
210 {
211 return set_cn(crt, NID_commonName, name, 0);
212 }
213
214
set_cn_and_email(X509 * crt,const char * name)215 static int set_cn_and_email(X509 *crt, const char *name)
216 {
217 return set_cn(crt, NID_commonName, name,
218 NID_pkcs9_emailAddress, "dummy@example.com", 0);
219 }
220
set_cn2(X509 * crt,const char * name)221 static int set_cn2(X509 *crt, const char *name)
222 {
223 return set_cn(crt, NID_commonName, "dummy value",
224 NID_commonName, name, 0);
225 }
226
set_cn3(X509 * crt,const char * name)227 static int set_cn3(X509 *crt, const char *name)
228 {
229 return set_cn(crt, NID_commonName, name,
230 NID_commonName, "dummy value", 0);
231 }
232
set_email1(X509 * crt,const char * name)233 static int set_email1(X509 *crt, const char *name)
234 {
235 return set_cn(crt, NID_pkcs9_emailAddress, name, 0);
236 }
237
set_email2(X509 * crt,const char * name)238 static int set_email2(X509 *crt, const char *name)
239 {
240 return set_cn(crt, NID_pkcs9_emailAddress, "dummy@example.com",
241 NID_pkcs9_emailAddress, name, 0);
242 }
243
set_email3(X509 * crt,const char * name)244 static int set_email3(X509 *crt, const char *name)
245 {
246 return set_cn(crt, NID_pkcs9_emailAddress, name,
247 NID_pkcs9_emailAddress, "dummy@example.com", 0);
248 }
249
set_email_and_cn(X509 * crt,const char * name)250 static int set_email_and_cn(X509 *crt, const char *name)
251 {
252 return set_cn(crt, NID_pkcs9_emailAddress, name,
253 NID_commonName, "www.example.org", 0);
254 }
255
set_altname_dns(X509 * crt,const char * name)256 static int set_altname_dns(X509 *crt, const char *name)
257 {
258 return set_altname(crt, GEN_DNS, name, 0);
259 }
260
set_altname_email(X509 * crt,const char * name)261 static int set_altname_email(X509 *crt, const char *name)
262 {
263 return set_altname(crt, GEN_EMAIL, name, 0);
264 }
265
266 struct set_name_fn
267 {
268 int (*fn)(X509 *, const char *);
269 const char *name;
270 int host;
271 int email;
272 };
273
274 static const struct set_name_fn name_fns[] =
275 {
276 {set_cn1, "set CN", 1, 0},
277 {set_cn2, "set CN", 1, 0},
278 {set_cn3, "set CN", 1, 0},
279 {set_cn_and_email, "set CN", 1, 0},
280 {set_email1, "set emailAddress", 0, 1},
281 {set_email2, "set emailAddress", 0, 1},
282 {set_email3, "set emailAddress", 0, 1},
283 {set_email_and_cn, "set emailAddress", 0, 1},
284 {set_altname_dns, "set dnsName", 1, 0},
285 {set_altname_email, "set rfc822Name", 0, 1},
286 {NULL, NULL, 0}
287 };
288
make_cert(void)289 static X509 *make_cert(void)
290 {
291 X509 *ret = NULL;
292 X509 *crt = NULL;
293 X509_NAME *issuer = NULL;
294 crt = X509_new();
295 if (crt == NULL)
296 goto out;
297 if (!X509_set_version(crt, 3))
298 goto out;
299 ret = crt;
300 crt = NULL;
301 out:
302 X509_NAME_free(issuer);
303 return ret;
304 }
305
306 static int errors;
307
check_message(const struct set_name_fn * fn,const char * op,const char * nameincert,int match,const char * name)308 static void check_message(const struct set_name_fn *fn, const char *op,
309 const char *nameincert, int match, const char *name)
310 {
311 char msg[1024];
312 if (match < 0)
313 return;
314 BIO_snprintf(msg, sizeof(msg), "%s: %s: [%s] %s [%s]",
315 fn->name, op, nameincert,
316 match ? "matches" : "does not match", name);
317 if (is_exception(msg))
318 return;
319 puts(msg);
320 ++errors;
321 }
322
run_cert(X509 * crt,const char * nameincert,const struct set_name_fn * fn)323 static void run_cert(X509 *crt, const char *nameincert,
324 const struct set_name_fn *fn)
325 {
326 const char *const *pname = names;
327 while (*pname)
328 {
329 int samename = strcasecmp(nameincert, *pname) == 0;
330 size_t namelen = strlen(*pname);
331 char *name = malloc(namelen);
332 int match, ret;
333 memcpy(name, *pname, namelen);
334
335 ret = X509_check_host(crt, (const unsigned char *)name,
336 namelen, 0);
337 match = -1;
338 if (ret < 0)
339 {
340 fprintf(stderr, "internal error in X509_check_host");
341 ++errors;
342 }
343 else if (fn->host)
344 {
345 if (ret == 1 && !samename)
346 match = 1;
347 if (ret == 0 && samename)
348 match = 0;
349 }
350 else if (ret == 1)
351 match = 1;
352 check_message(fn, "host", nameincert, match, *pname);
353
354 ret = X509_check_host(crt, (const unsigned char *)name,
355 namelen, X509_CHECK_FLAG_NO_WILDCARDS);
356 match = -1;
357 if (ret < 0)
358 {
359 fprintf(stderr, "internal error in X509_check_host");
360 ++errors;
361 }
362 else if (fn->host)
363 {
364 if (ret == 1 && !samename)
365 match = 1;
366 if (ret == 0 && samename)
367 match = 0;
368 }
369 else if (ret == 1)
370 match = 1;
371 check_message(fn, "host-no-wildcards",
372 nameincert, match, *pname);
373
374 ret = X509_check_email(crt, (const unsigned char *)name,
375 namelen, 0);
376 match = -1;
377 if (fn->email)
378 {
379 if (ret && !samename)
380 match = 1;
381 if (!ret && samename && strchr(nameincert, '@') != NULL)
382 match = 0;
383 }
384 else if (ret)
385 match = 1;
386 check_message(fn, "email", nameincert, match, *pname);
387 ++pname;
388 free(name);
389 }
390 }
391
392 int
main(void)393 main(void)
394 {
395 CRYPTO_library_init();
396
397 const struct set_name_fn *pfn = name_fns;
398 while (pfn->name) {
399 const char *const *pname = names;
400 while (*pname)
401 {
402 X509 *crt = make_cert();
403 if (crt == NULL)
404 {
405 fprintf(stderr, "make_cert failed\n");
406 return 1;
407 }
408 if (!pfn->fn(crt, *pname))
409 {
410 fprintf(stderr, "X509 name setting failed\n");
411 return 1;
412 }
413 run_cert(crt, *pname, pfn);
414 X509_free(crt);
415 ++pname;
416 }
417 ++pfn;
418 }
419 if (errors == 0) {
420 printf("PASS\n");
421 }
422 return errors > 0 ? 1 : 0;
423 }
424