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 <string.h>
62
63#include <openssl/asn1.h>
64#include <openssl/asn1t.h>
65#include <openssl/conf.h>
66#include <openssl/err.h>
67#include <openssl/mem.h>
68#include <openssl/obj.h>
69#include <openssl/x509v3.h>
70
71/* Support for Thawte strong extranet extension */
72
73#define SXNET_TEST
74
75static int sxnet_i2r(X509V3_EXT_METHOD *method, SXNET *sx, BIO *out,
76                     int indent);
77#ifdef SXNET_TEST
78static SXNET *sxnet_v2i(X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
79                        STACK_OF(CONF_VALUE) *nval);
80#endif
81const X509V3_EXT_METHOD v3_sxnet = {
82    NID_sxnet, X509V3_EXT_MULTILINE, ASN1_ITEM_ref(SXNET),
83    0, 0, 0, 0,
84    0, 0,
85    0,
86#ifdef SXNET_TEST
87    (X509V3_EXT_V2I)sxnet_v2i,
88#else
89    0,
90#endif
91    (X509V3_EXT_I2R)sxnet_i2r,
92    0,
93    NULL
94};
95
96ASN1_SEQUENCE(SXNETID) = {
97        ASN1_SIMPLE(SXNETID, zone, ASN1_INTEGER),
98        ASN1_SIMPLE(SXNETID, user, ASN1_OCTET_STRING)
99} ASN1_SEQUENCE_END(SXNETID)
100
101IMPLEMENT_ASN1_FUNCTIONS(SXNETID)
102
103ASN1_SEQUENCE(SXNET) = {
104        ASN1_SIMPLE(SXNET, version, ASN1_INTEGER),
105        ASN1_SEQUENCE_OF(SXNET, ids, SXNETID)
106} ASN1_SEQUENCE_END(SXNET)
107
108IMPLEMENT_ASN1_FUNCTIONS(SXNET)
109
110static int sxnet_i2r(X509V3_EXT_METHOD *method, SXNET *sx, BIO *out,
111                     int indent)
112{
113    long v;
114    char *tmp;
115    SXNETID *id;
116    size_t i;
117    v = ASN1_INTEGER_get(sx->version);
118    BIO_printf(out, "%*sVersion: %ld (0x%lX)", indent, "", v + 1, v);
119    for (i = 0; i < sk_SXNETID_num(sx->ids); i++) {
120        id = sk_SXNETID_value(sx->ids, i);
121        tmp = i2s_ASN1_INTEGER(NULL, id->zone);
122        BIO_printf(out, "\n%*sZone: %s, User: ", indent, "", tmp);
123        OPENSSL_free(tmp);
124        M_ASN1_OCTET_STRING_print(out, id->user);
125    }
126    return 1;
127}
128
129#ifdef SXNET_TEST
130
131/*
132 * NBB: this is used for testing only. It should *not* be used for anything
133 * else because it will just take static IDs from the configuration file and
134 * they should really be separate values for each user.
135 */
136
137static SXNET *sxnet_v2i(X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
138                        STACK_OF(CONF_VALUE) *nval)
139{
140    CONF_VALUE *cnf;
141    SXNET *sx = NULL;
142    size_t i;
143    for (i = 0; i < sk_CONF_VALUE_num(nval); i++) {
144        cnf = sk_CONF_VALUE_value(nval, i);
145        if (!SXNET_add_id_asc(&sx, cnf->name, cnf->value, -1))
146            return NULL;
147    }
148    return sx;
149}
150
151#endif
152
153/* Strong Extranet utility functions */
154
155/* Add an id given the zone as an ASCII number */
156
157int SXNET_add_id_asc(SXNET **psx, char *zone, char *user, int userlen)
158{
159    ASN1_INTEGER *izone = NULL;
160    if (!(izone = s2i_ASN1_INTEGER(NULL, zone))) {
161        OPENSSL_PUT_ERROR(X509V3, X509V3_R_ERROR_CONVERTING_ZONE);
162        return 0;
163    }
164    return SXNET_add_id_INTEGER(psx, izone, user, userlen);
165}
166
167/* Add an id given the zone as an unsigned long */
168
169int SXNET_add_id_ulong(SXNET **psx, unsigned long lzone, char *user,
170                       int userlen)
171{
172    ASN1_INTEGER *izone = NULL;
173    if (!(izone = M_ASN1_INTEGER_new()) || !ASN1_INTEGER_set(izone, lzone)) {
174        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
175        M_ASN1_INTEGER_free(izone);
176        return 0;
177    }
178    return SXNET_add_id_INTEGER(psx, izone, user, userlen);
179
180}
181
182/*
183 * Add an id given the zone as an ASN1_INTEGER. Note this version uses the
184 * passed integer and doesn't make a copy so don't free it up afterwards.
185 */
186
187int SXNET_add_id_INTEGER(SXNET **psx, ASN1_INTEGER *zone, char *user,
188                         int userlen)
189{
190    SXNET *sx = NULL;
191    SXNETID *id = NULL;
192    if (!psx || !zone || !user) {
193        OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_NULL_ARGUMENT);
194        return 0;
195    }
196    if (userlen == -1)
197        userlen = strlen(user);
198    if (userlen > 64) {
199        OPENSSL_PUT_ERROR(X509V3, X509V3_R_USER_TOO_LONG);
200        return 0;
201    }
202    if (!*psx) {
203        if (!(sx = SXNET_new()))
204            goto err;
205        if (!ASN1_INTEGER_set(sx->version, 0))
206            goto err;
207        *psx = sx;
208    } else
209        sx = *psx;
210    if (SXNET_get_id_INTEGER(sx, zone)) {
211        OPENSSL_PUT_ERROR(X509V3, X509V3_R_DUPLICATE_ZONE_ID);
212        return 0;
213    }
214
215    if (!(id = SXNETID_new()))
216        goto err;
217    if (userlen == -1)
218        userlen = strlen(user);
219
220    if (!M_ASN1_OCTET_STRING_set(id->user, user, userlen))
221        goto err;
222    if (!sk_SXNETID_push(sx->ids, id))
223        goto err;
224    id->zone = zone;
225    return 1;
226
227 err:
228    OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
229    SXNETID_free(id);
230    SXNET_free(sx);
231    *psx = NULL;
232    return 0;
233}
234
235ASN1_OCTET_STRING *SXNET_get_id_asc(SXNET *sx, char *zone)
236{
237    ASN1_INTEGER *izone = NULL;
238    ASN1_OCTET_STRING *oct;
239    if (!(izone = s2i_ASN1_INTEGER(NULL, zone))) {
240        OPENSSL_PUT_ERROR(X509V3, X509V3_R_ERROR_CONVERTING_ZONE);
241        return NULL;
242    }
243    oct = SXNET_get_id_INTEGER(sx, izone);
244    M_ASN1_INTEGER_free(izone);
245    return oct;
246}
247
248ASN1_OCTET_STRING *SXNET_get_id_ulong(SXNET *sx, unsigned long lzone)
249{
250    ASN1_INTEGER *izone = NULL;
251    ASN1_OCTET_STRING *oct;
252    if (!(izone = M_ASN1_INTEGER_new()) || !ASN1_INTEGER_set(izone, lzone)) {
253        OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
254        M_ASN1_INTEGER_free(izone);
255        return NULL;
256    }
257    oct = SXNET_get_id_INTEGER(sx, izone);
258    M_ASN1_INTEGER_free(izone);
259    return oct;
260}
261
262ASN1_OCTET_STRING *SXNET_get_id_INTEGER(SXNET *sx, ASN1_INTEGER *zone)
263{
264    SXNETID *id;
265    size_t i;
266    for (i = 0; i < sk_SXNETID_num(sx->ids); i++) {
267        id = sk_SXNETID_value(sx->ids, i);
268        if (!M_ASN1_INTEGER_cmp(id->zone, zone))
269            return id->user;
270    }
271    return NULL;
272}
273
274IMPLEMENT_ASN1_SET_OF(SXNETID)
275