1 /* $OpenBSD: x509_sxnet.c,v 1.1 2020/06/04 15:19:32 jsing Exp $ */
2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
3 * project 1999.
4 */
5 /* ====================================================================
6 * Copyright (c) 1999 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 <string.h>
61
62 #include <openssl/asn1.h>
63 #include <openssl/asn1t.h>
64 #include <openssl/conf.h>
65 #include <openssl/err.h>
66 #include <openssl/x509v3.h>
67
68 /* Support for Thawte strong extranet extension */
69
70 #define SXNET_TEST
71
72 static int sxnet_i2r(X509V3_EXT_METHOD *method, SXNET *sx, BIO *out,
73 int indent);
74 #ifdef SXNET_TEST
75 static SXNET * sxnet_v2i(X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
76 STACK_OF(CONF_VALUE) *nval);
77 #endif
78
79 const X509V3_EXT_METHOD v3_sxnet = {
80 .ext_nid = NID_sxnet,
81 .ext_flags = X509V3_EXT_MULTILINE,
82 .it = &SXNET_it,
83 .ext_new = NULL,
84 .ext_free = NULL,
85 .d2i = NULL,
86 .i2d = NULL,
87 .i2s = NULL,
88 .s2i = NULL,
89 .i2v = NULL,
90 #ifdef SXNET_TEST
91 .v2i = (X509V3_EXT_V2I)sxnet_v2i,
92 #else
93 .v2i = NULL,
94 #endif
95 .i2r = (X509V3_EXT_I2R)sxnet_i2r,
96 .r2i = NULL,
97 .usr_data = NULL,
98 };
99
100 static const ASN1_TEMPLATE SXNETID_seq_tt[] = {
101 {
102 .flags = 0,
103 .tag = 0,
104 .offset = offsetof(SXNETID, zone),
105 .field_name = "zone",
106 .item = &ASN1_INTEGER_it,
107 },
108 {
109 .flags = 0,
110 .tag = 0,
111 .offset = offsetof(SXNETID, user),
112 .field_name = "user",
113 .item = &ASN1_OCTET_STRING_it,
114 },
115 };
116
117 const ASN1_ITEM SXNETID_it = {
118 .itype = ASN1_ITYPE_SEQUENCE,
119 .utype = V_ASN1_SEQUENCE,
120 .templates = SXNETID_seq_tt,
121 .tcount = sizeof(SXNETID_seq_tt) / sizeof(ASN1_TEMPLATE),
122 .funcs = NULL,
123 .size = sizeof(SXNETID),
124 .sname = "SXNETID",
125 };
126
127
128 SXNETID *
d2i_SXNETID(SXNETID ** a,const unsigned char ** in,long len)129 d2i_SXNETID(SXNETID **a, const unsigned char **in, long len)
130 {
131 return (SXNETID *)ASN1_item_d2i((ASN1_VALUE **)a, in, len,
132 &SXNETID_it);
133 }
134
135 int
i2d_SXNETID(SXNETID * a,unsigned char ** out)136 i2d_SXNETID(SXNETID *a, unsigned char **out)
137 {
138 return ASN1_item_i2d((ASN1_VALUE *)a, out, &SXNETID_it);
139 }
140
141 SXNETID *
SXNETID_new(void)142 SXNETID_new(void)
143 {
144 return (SXNETID *)ASN1_item_new(&SXNETID_it);
145 }
146
147 void
SXNETID_free(SXNETID * a)148 SXNETID_free(SXNETID *a)
149 {
150 ASN1_item_free((ASN1_VALUE *)a, &SXNETID_it);
151 }
152
153 static const ASN1_TEMPLATE SXNET_seq_tt[] = {
154 {
155 .flags = 0,
156 .tag = 0,
157 .offset = offsetof(SXNET, version),
158 .field_name = "version",
159 .item = &ASN1_INTEGER_it,
160 },
161 {
162 .flags = ASN1_TFLG_SEQUENCE_OF,
163 .tag = 0,
164 .offset = offsetof(SXNET, ids),
165 .field_name = "ids",
166 .item = &SXNETID_it,
167 },
168 };
169
170 const ASN1_ITEM SXNET_it = {
171 .itype = ASN1_ITYPE_SEQUENCE,
172 .utype = V_ASN1_SEQUENCE,
173 .templates = SXNET_seq_tt,
174 .tcount = sizeof(SXNET_seq_tt) / sizeof(ASN1_TEMPLATE),
175 .funcs = NULL,
176 .size = sizeof(SXNET),
177 .sname = "SXNET",
178 };
179
180
181 SXNET *
d2i_SXNET(SXNET ** a,const unsigned char ** in,long len)182 d2i_SXNET(SXNET **a, const unsigned char **in, long len)
183 {
184 return (SXNET *)ASN1_item_d2i((ASN1_VALUE **)a, in, len,
185 &SXNET_it);
186 }
187
188 int
i2d_SXNET(SXNET * a,unsigned char ** out)189 i2d_SXNET(SXNET *a, unsigned char **out)
190 {
191 return ASN1_item_i2d((ASN1_VALUE *)a, out, &SXNET_it);
192 }
193
194 SXNET *
SXNET_new(void)195 SXNET_new(void)
196 {
197 return (SXNET *)ASN1_item_new(&SXNET_it);
198 }
199
200 void
SXNET_free(SXNET * a)201 SXNET_free(SXNET *a)
202 {
203 ASN1_item_free((ASN1_VALUE *)a, &SXNET_it);
204 }
205
206 static int
sxnet_i2r(X509V3_EXT_METHOD * method,SXNET * sx,BIO * out,int indent)207 sxnet_i2r(X509V3_EXT_METHOD *method, SXNET *sx, BIO *out, int indent)
208 {
209 long v;
210 char *tmp;
211 SXNETID *id;
212 int i;
213
214 v = ASN1_INTEGER_get(sx->version);
215 BIO_printf(out, "%*sVersion: %ld (0x%lX)", indent, "", v + 1, v);
216 for (i = 0; i < sk_SXNETID_num(sx->ids); i++) {
217 id = sk_SXNETID_value(sx->ids, i);
218 tmp = i2s_ASN1_INTEGER(NULL, id->zone);
219 BIO_printf(out, "\n%*sZone: %s, User: ", indent, "", tmp);
220 free(tmp);
221 ASN1_STRING_print(out, id->user);
222 }
223 return 1;
224 }
225
226 #ifdef SXNET_TEST
227
228 /* NBB: this is used for testing only. It should *not* be used for anything
229 * else because it will just take static IDs from the configuration file and
230 * they should really be separate values for each user.
231 */
232
233 static SXNET *
sxnet_v2i(X509V3_EXT_METHOD * method,X509V3_CTX * ctx,STACK_OF (CONF_VALUE)* nval)234 sxnet_v2i(X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
235 STACK_OF(CONF_VALUE) *nval)
236 {
237 CONF_VALUE *cnf;
238 SXNET *sx = NULL;
239 int i;
240
241 for (i = 0; i < sk_CONF_VALUE_num(nval); i++) {
242 cnf = sk_CONF_VALUE_value(nval, i);
243 if (!SXNET_add_id_asc(&sx, cnf->name, cnf->value, -1))
244 return NULL;
245 }
246 return sx;
247 }
248
249 #endif
250
251 /* Strong Extranet utility functions */
252
253 /* Add an id given the zone as an ASCII number */
254
255 int
SXNET_add_id_asc(SXNET ** psx,const char * zone,const char * user,int userlen)256 SXNET_add_id_asc(SXNET **psx, const char *zone, const char *user, int userlen)
257 {
258 ASN1_INTEGER *izone = NULL;
259
260 if (!(izone = s2i_ASN1_INTEGER(NULL, zone))) {
261 X509V3error(X509V3_R_ERROR_CONVERTING_ZONE);
262 return 0;
263 }
264 return SXNET_add_id_INTEGER(psx, izone, user, userlen);
265 }
266
267 /* Add an id given the zone as an unsigned long */
268
269 int
SXNET_add_id_ulong(SXNET ** psx,unsigned long lzone,const char * user,int userlen)270 SXNET_add_id_ulong(SXNET **psx, unsigned long lzone, const char *user,
271 int userlen)
272 {
273 ASN1_INTEGER *izone = NULL;
274
275 if (!(izone = ASN1_INTEGER_new()) ||
276 !ASN1_INTEGER_set(izone, lzone)) {
277 X509V3error(ERR_R_MALLOC_FAILURE);
278 ASN1_INTEGER_free(izone);
279 return 0;
280 }
281 return SXNET_add_id_INTEGER(psx, izone, user, userlen);
282 }
283
284 /* Add an id given the zone as an ASN1_INTEGER.
285 * Note this version uses the passed integer and doesn't make a copy so don't
286 * free it up afterwards.
287 */
288
289 int
SXNET_add_id_INTEGER(SXNET ** psx,ASN1_INTEGER * zone,const char * user,int userlen)290 SXNET_add_id_INTEGER(SXNET **psx, ASN1_INTEGER *zone, const char *user,
291 int userlen)
292 {
293 SXNET *sx = NULL;
294 SXNETID *id = NULL;
295
296 if (!psx || !zone || !user) {
297 X509V3error(X509V3_R_INVALID_NULL_ARGUMENT);
298 return 0;
299 }
300 if (userlen == -1)
301 userlen = strlen(user);
302 if (userlen > 64) {
303 X509V3error(X509V3_R_USER_TOO_LONG);
304 return 0;
305 }
306 if (!*psx) {
307 if (!(sx = SXNET_new()))
308 goto err;
309 if (!ASN1_INTEGER_set(sx->version, 0))
310 goto err;
311 *psx = sx;
312 } else
313 sx = *psx;
314 if (SXNET_get_id_INTEGER(sx, zone)) {
315 X509V3error(X509V3_R_DUPLICATE_ZONE_ID);
316 return 0;
317 }
318
319 if (!(id = SXNETID_new()))
320 goto err;
321 if (userlen == -1)
322 userlen = strlen(user);
323
324 if (!ASN1_STRING_set(id->user, user, userlen))
325 goto err;
326 if (!sk_SXNETID_push(sx->ids, id))
327 goto err;
328 id->zone = zone;
329 return 1;
330
331 err:
332 X509V3error(ERR_R_MALLOC_FAILURE);
333 SXNETID_free(id);
334 SXNET_free(sx);
335 *psx = NULL;
336 return 0;
337 }
338
339 ASN1_OCTET_STRING *
SXNET_get_id_asc(SXNET * sx,const char * zone)340 SXNET_get_id_asc(SXNET *sx, const char *zone)
341 {
342 ASN1_INTEGER *izone = NULL;
343 ASN1_OCTET_STRING *oct;
344
345 if (!(izone = s2i_ASN1_INTEGER(NULL, zone))) {
346 X509V3error(X509V3_R_ERROR_CONVERTING_ZONE);
347 return NULL;
348 }
349 oct = SXNET_get_id_INTEGER(sx, izone);
350 ASN1_INTEGER_free(izone);
351 return oct;
352 }
353
354 ASN1_OCTET_STRING *
SXNET_get_id_ulong(SXNET * sx,unsigned long lzone)355 SXNET_get_id_ulong(SXNET *sx, unsigned long lzone)
356 {
357 ASN1_INTEGER *izone = NULL;
358 ASN1_OCTET_STRING *oct;
359
360 if (!(izone = ASN1_INTEGER_new()) ||
361 !ASN1_INTEGER_set(izone, lzone)) {
362 X509V3error(ERR_R_MALLOC_FAILURE);
363 ASN1_INTEGER_free(izone);
364 return NULL;
365 }
366 oct = SXNET_get_id_INTEGER(sx, izone);
367 ASN1_INTEGER_free(izone);
368 return oct;
369 }
370
371 ASN1_OCTET_STRING *
SXNET_get_id_INTEGER(SXNET * sx,ASN1_INTEGER * zone)372 SXNET_get_id_INTEGER(SXNET *sx, ASN1_INTEGER *zone)
373 {
374 SXNETID *id;
375 int i;
376
377 for (i = 0; i < sk_SXNETID_num(sx->ids); i++) {
378 id = sk_SXNETID_value(sx->ids, i);
379 if (!ASN1_INTEGER_cmp(id->zone, zone))
380 return id->user;
381 }
382 return NULL;
383 }
384