v3_sxnet.c revision 296465 
1/* v3_sxnet.c */
2/*
3 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
4 * 1999.
5 */
6/* ====================================================================
7 * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 *
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 *
16 * 2. Redistributions in binary form must reproduce the above copyright
17 *    notice, this list of conditions and the following disclaimer in
18 *    the documentation and/or other materials provided with the
19 *    distribution.
20 *
21 * 3. All advertising materials mentioning features or use of this
22 *    software must display the following acknowledgment:
23 *    "This product includes software developed by the OpenSSL Project
24 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
25 *
26 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
27 *    endorse or promote products derived from this software without
28 *    prior written permission. For written permission, please contact
29 *    licensing@OpenSSL.org.
30 *
31 * 5. Products derived from this software may not be called "OpenSSL"
32 *    nor may "OpenSSL" appear in their names without prior written
33 *    permission of the OpenSSL Project.
34 *
35 * 6. Redistributions of any form whatsoever must retain the following
36 *    acknowledgment:
37 *    "This product includes software developed by the OpenSSL Project
38 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
39 *
40 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
41 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
43 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
44 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
46 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
47 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
49 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
50 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
51 * OF THE POSSIBILITY OF SUCH DAMAGE.
52 * ====================================================================
53 *
54 * This product includes cryptographic software written by Eric Young
55 * (eay@cryptsoft.com).  This product includes software written by Tim
56 * Hudson (tjh@cryptsoft.com).
57 *
58 */
59
60#include <stdio.h>
61#include "cryptlib.h"
62#include <openssl/conf.h>
63#include <openssl/asn1.h>
64#include <openssl/asn1t.h>
65#include <openssl/x509v3.h>
66
67/* Support for Thawte strong extranet extension */
68
69#define SXNET_TEST
70
71static int sxnet_i2r(X509V3_EXT_METHOD *method, SXNET *sx, BIO *out,
72                     int indent);
73#ifdef SXNET_TEST
74static SXNET *sxnet_v2i(X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
75                        STACK_OF(CONF_VALUE) *nval);
76#endif
77const X509V3_EXT_METHOD v3_sxnet = {
78    NID_sxnet, X509V3_EXT_MULTILINE, ASN1_ITEM_ref(SXNET),
79    0, 0, 0, 0,
80    0, 0,
81    0,
82#ifdef SXNET_TEST
83    (X509V3_EXT_V2I)sxnet_v2i,
84#else
85    0,
86#endif
87    (X509V3_EXT_I2R)sxnet_i2r,
88    0,
89    NULL
90};
91
92ASN1_SEQUENCE(SXNETID) = {
93        ASN1_SIMPLE(SXNETID, zone, ASN1_INTEGER),
94        ASN1_SIMPLE(SXNETID, user, ASN1_OCTET_STRING)
95} ASN1_SEQUENCE_END(SXNETID)
96
97IMPLEMENT_ASN1_FUNCTIONS(SXNETID)
98
99ASN1_SEQUENCE(SXNET) = {
100        ASN1_SIMPLE(SXNET, version, ASN1_INTEGER),
101        ASN1_SEQUENCE_OF(SXNET, ids, SXNETID)
102} ASN1_SEQUENCE_END(SXNET)
103
104IMPLEMENT_ASN1_FUNCTIONS(SXNET)
105
106static int sxnet_i2r(X509V3_EXT_METHOD *method, SXNET *sx, BIO *out,
107                     int indent)
108{
109    long v;
110    char *tmp;
111    SXNETID *id;
112    int i;
113    v = ASN1_INTEGER_get(sx->version);
114    BIO_printf(out, "%*sVersion: %ld (0x%lX)", indent, "", v + 1, v);
115    for (i = 0; i < sk_SXNETID_num(sx->ids); i++) {
116        id = sk_SXNETID_value(sx->ids, i);
117        tmp = i2s_ASN1_INTEGER(NULL, id->zone);
118        BIO_printf(out, "\n%*sZone: %s, User: ", indent, "", tmp);
119        OPENSSL_free(tmp);
120        M_ASN1_OCTET_STRING_print(out, id->user);
121    }
122    return 1;
123}
124
125#ifdef SXNET_TEST
126
127/*
128 * NBB: this is used for testing only. It should *not* be used for anything
129 * else because it will just take static IDs from the configuration file and
130 * they should really be separate values for each user.
131 */
132
133static SXNET *sxnet_v2i(X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
134                        STACK_OF(CONF_VALUE) *nval)
135{
136    CONF_VALUE *cnf;
137    SXNET *sx = NULL;
138    int i;
139    for (i = 0; i < sk_CONF_VALUE_num(nval); i++) {
140        cnf = sk_CONF_VALUE_value(nval, i);
141        if (!SXNET_add_id_asc(&sx, cnf->name, cnf->value, -1))
142            return NULL;
143    }
144    return sx;
145}
146
147#endif
148
149/* Strong Extranet utility functions */
150
151/* Add an id given the zone as an ASCII number */
152
153int SXNET_add_id_asc(SXNET **psx, char *zone, char *user, int userlen)
154{
155    ASN1_INTEGER *izone = NULL;
156    if (!(izone = s2i_ASN1_INTEGER(NULL, zone))) {
157        X509V3err(X509V3_F_SXNET_ADD_ID_ASC, X509V3_R_ERROR_CONVERTING_ZONE);
158        return 0;
159    }
160    return SXNET_add_id_INTEGER(psx, izone, user, userlen);
161}
162
163/* Add an id given the zone as an unsigned long */
164
165int SXNET_add_id_ulong(SXNET **psx, unsigned long lzone, char *user,
166                       int userlen)
167{
168    ASN1_INTEGER *izone = NULL;
169    if (!(izone = M_ASN1_INTEGER_new()) || !ASN1_INTEGER_set(izone, lzone)) {
170        X509V3err(X509V3_F_SXNET_ADD_ID_ULONG, ERR_R_MALLOC_FAILURE);
171        M_ASN1_INTEGER_free(izone);
172        return 0;
173    }
174    return SXNET_add_id_INTEGER(psx, izone, user, userlen);
175
176}
177
178/*
179 * Add an id given the zone as an ASN1_INTEGER. Note this version uses the
180 * passed integer and doesn't make a copy so don't free it up afterwards.
181 */
182
183int SXNET_add_id_INTEGER(SXNET **psx, ASN1_INTEGER *zone, char *user,
184                         int userlen)
185{
186    SXNET *sx = NULL;
187    SXNETID *id = NULL;
188    if (!psx || !zone || !user) {
189        X509V3err(X509V3_F_SXNET_ADD_ID_INTEGER,
190                  X509V3_R_INVALID_NULL_ARGUMENT);
191        return 0;
192    }
193    if (userlen == -1)
194        userlen = strlen(user);
195    if (userlen > 64) {
196        X509V3err(X509V3_F_SXNET_ADD_ID_INTEGER, X509V3_R_USER_TOO_LONG);
197        return 0;
198    }
199    if (!*psx) {
200        if (!(sx = SXNET_new()))
201            goto err;
202        if (!ASN1_INTEGER_set(sx->version, 0))
203            goto err;
204        *psx = sx;
205    } else
206        sx = *psx;
207    if (SXNET_get_id_INTEGER(sx, zone)) {
208        X509V3err(X509V3_F_SXNET_ADD_ID_INTEGER, X509V3_R_DUPLICATE_ZONE_ID);
209        return 0;
210    }
211
212    if (!(id = SXNETID_new()))
213        goto err;
214    if (userlen == -1)
215        userlen = strlen(user);
216
217    if (!M_ASN1_OCTET_STRING_set(id->user, user, userlen))
218        goto err;
219    if (!sk_SXNETID_push(sx->ids, id))
220        goto err;
221    id->zone = zone;
222    return 1;
223
224 err:
225    X509V3err(X509V3_F_SXNET_ADD_ID_INTEGER, ERR_R_MALLOC_FAILURE);
226    SXNETID_free(id);
227    SXNET_free(sx);
228    *psx = NULL;
229    return 0;
230}
231
232ASN1_OCTET_STRING *SXNET_get_id_asc(SXNET *sx, char *zone)
233{
234    ASN1_INTEGER *izone = NULL;
235    ASN1_OCTET_STRING *oct;
236    if (!(izone = s2i_ASN1_INTEGER(NULL, zone))) {
237        X509V3err(X509V3_F_SXNET_GET_ID_ASC, X509V3_R_ERROR_CONVERTING_ZONE);
238        return NULL;
239    }
240    oct = SXNET_get_id_INTEGER(sx, izone);
241    M_ASN1_INTEGER_free(izone);
242    return oct;
243}
244
245ASN1_OCTET_STRING *SXNET_get_id_ulong(SXNET *sx, unsigned long lzone)
246{
247    ASN1_INTEGER *izone = NULL;
248    ASN1_OCTET_STRING *oct;
249    if (!(izone = M_ASN1_INTEGER_new()) || !ASN1_INTEGER_set(izone, lzone)) {
250        X509V3err(X509V3_F_SXNET_GET_ID_ULONG, ERR_R_MALLOC_FAILURE);
251        M_ASN1_INTEGER_free(izone);
252        return NULL;
253    }
254    oct = SXNET_get_id_INTEGER(sx, izone);
255    M_ASN1_INTEGER_free(izone);
256    return oct;
257}
258
259ASN1_OCTET_STRING *SXNET_get_id_INTEGER(SXNET *sx, ASN1_INTEGER *zone)
260{
261    SXNETID *id;
262    int i;
263    for (i = 0; i < sk_SXNETID_num(sx->ids); i++) {
264        id = sk_SXNETID_value(sx->ids, i);
265        if (!M_ASN1_INTEGER_cmp(id->zone, zone))
266            return id->user;
267    }
268    return NULL;
269}
270
271IMPLEMENT_STACK_OF(SXNETID)
272
273IMPLEMENT_ASN1_SET_OF(SXNETID)
274