1/*
2 * Copyright 1999-2016 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10#include <stdio.h>
11#include "internal/cryptlib.h"
12#include <openssl/conf.h>
13#include <openssl/asn1.h>
14#include <openssl/asn1t.h>
15#include <openssl/x509v3.h>
16#include "ext_dat.h"
17
18/* Support for Thawte strong extranet extension */
19
20#define SXNET_TEST
21
22static int sxnet_i2r(X509V3_EXT_METHOD *method, SXNET *sx, BIO *out,
23 int indent);
24#ifdef SXNET_TEST
25static SXNET *sxnet_v2i(X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
26 STACK_OF(CONF_VALUE) *nval);
27#endif
28const X509V3_EXT_METHOD v3_sxnet = {
29 NID_sxnet, X509V3_EXT_MULTILINE, ASN1_ITEM_ref(SXNET),
30 0, 0, 0, 0,
31 0, 0,
32 0,
33#ifdef SXNET_TEST
34 (X509V3_EXT_V2I)sxnet_v2i,
35#else
36 0,
37#endif
38 (X509V3_EXT_I2R)sxnet_i2r,
39 0,
40 NULL
41};
42
43ASN1_SEQUENCE(SXNETID) = {
44 ASN1_SIMPLE(SXNETID, zone, ASN1_INTEGER),
45 ASN1_SIMPLE(SXNETID, user, ASN1_OCTET_STRING)
46} ASN1_SEQUENCE_END(SXNETID)
47
48IMPLEMENT_ASN1_FUNCTIONS(SXNETID)
49
50ASN1_SEQUENCE(SXNET) = {
51 ASN1_SIMPLE(SXNET, version, ASN1_INTEGER),
52 ASN1_SEQUENCE_OF(SXNET, ids, SXNETID)
53} ASN1_SEQUENCE_END(SXNET)
54
55IMPLEMENT_ASN1_FUNCTIONS(SXNET)
56
57static int sxnet_i2r(X509V3_EXT_METHOD *method, SXNET *sx, BIO *out,
58 int indent)
59{
60 long v;
61 char *tmp;
62 SXNETID *id;
63 int i;
64 v = ASN1_INTEGER_get(sx->version);
65 BIO_printf(out, "%*sVersion: %ld (0x%lX)", indent, "", v + 1, v);
66 for (i = 0; i < sk_SXNETID_num(sx->ids); i++) {
67 id = sk_SXNETID_value(sx->ids, i);
68 tmp = i2s_ASN1_INTEGER(NULL, id->zone);
69 BIO_printf(out, "\n%*sZone: %s, User: ", indent, "", tmp);
70 OPENSSL_free(tmp);
71 ASN1_STRING_print(out, id->user);
72 }
73 return 1;
74}
75
76#ifdef SXNET_TEST
77
78/*
79 * NBB: this is used for testing only. It should *not* be used for anything
80 * else because it will just take static IDs from the configuration file and
81 * they should really be separate values for each user.
82 */
83
84static SXNET *sxnet_v2i(X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
85 STACK_OF(CONF_VALUE) *nval)
86{
87 CONF_VALUE *cnf;
88 SXNET *sx = NULL;
89 int i;
90 for (i = 0; i < sk_CONF_VALUE_num(nval); i++) {
91 cnf = sk_CONF_VALUE_value(nval, i);
92 if (!SXNET_add_id_asc(&sx, cnf->name, cnf->value, -1))
93 return NULL;
94 }
95 return sx;
96}
97
98#endif
99
100/* Strong Extranet utility functions */
101
102/* Add an id given the zone as an ASCII number */
103
104int SXNET_add_id_asc(SXNET **psx, const char *zone, const char *user, int userlen)
105{
106 ASN1_INTEGER *izone;
107
108 if ((izone = s2i_ASN1_INTEGER(NULL, zone)) == NULL) {
109 X509V3err(X509V3_F_SXNET_ADD_ID_ASC, X509V3_R_ERROR_CONVERTING_ZONE);
110 return 0;
111 }
112 return SXNET_add_id_INTEGER(psx, izone, user, userlen);
113}
114
115/* Add an id given the zone as an unsigned long */
116
117int SXNET_add_id_ulong(SXNET **psx, unsigned long lzone, const char *user,
118 int userlen)
119{
120 ASN1_INTEGER *izone;
121
122 if ((izone = ASN1_INTEGER_new()) == NULL
123 || !ASN1_INTEGER_set(izone, lzone)) {
124 X509V3err(X509V3_F_SXNET_ADD_ID_ULONG, ERR_R_MALLOC_FAILURE);
125 ASN1_INTEGER_free(izone);
126 return 0;
127 }
128 return SXNET_add_id_INTEGER(psx, izone, user, userlen);
129
130}
131
132/*
133 * Add an id given the zone as an ASN1_INTEGER. Note this version uses the
134 * passed integer and doesn't make a copy so don't free it up afterwards.
135 */
136
137int SXNET_add_id_INTEGER(SXNET **psx, ASN1_INTEGER *zone, const char *user,
138 int userlen)
139{
140 SXNET *sx = NULL;
141 SXNETID *id = NULL;
142
143 if (psx == NULL || zone == NULL || user == NULL) {
144 X509V3err(X509V3_F_SXNET_ADD_ID_INTEGER,
145 X509V3_R_INVALID_NULL_ARGUMENT);
146 return 0;
147 }
148 if (userlen == -1)
149 userlen = strlen(user);
150 if (userlen > 64) {
151 X509V3err(X509V3_F_SXNET_ADD_ID_INTEGER, X509V3_R_USER_TOO_LONG);
152 return 0;
153 }
154 if (*psx == NULL) {
155 if ((sx = SXNET_new()) == NULL)
156 goto err;
157 if (!ASN1_INTEGER_set(sx->version, 0))
158 goto err;
159 *psx = sx;
160 } else
161 sx = *psx;
162 if (SXNET_get_id_INTEGER(sx, zone)) {
163 X509V3err(X509V3_F_SXNET_ADD_ID_INTEGER, X509V3_R_DUPLICATE_ZONE_ID);
164 return 0;
165 }
166
167 if ((id = SXNETID_new()) == NULL)
168 goto err;
169 if (userlen == -1)
170 userlen = strlen(user);
171
172 if (!ASN1_OCTET_STRING_set(id->user, (const unsigned char *)user, userlen))
173 goto err;
174 if (!sk_SXNETID_push(sx->ids, id))
175 goto err;
176 id->zone = zone;
177 return 1;
178
179 err:
180 X509V3err(X509V3_F_SXNET_ADD_ID_INTEGER, ERR_R_MALLOC_FAILURE);
181 SXNETID_free(id);
182 SXNET_free(sx);
183 *psx = NULL;
184 return 0;
185}
186
187ASN1_OCTET_STRING *SXNET_get_id_asc(SXNET *sx, const char *zone)
188{
189 ASN1_INTEGER *izone;
190 ASN1_OCTET_STRING *oct;
191
192 if ((izone = s2i_ASN1_INTEGER(NULL, zone)) == NULL) {
193 X509V3err(X509V3_F_SXNET_GET_ID_ASC, X509V3_R_ERROR_CONVERTING_ZONE);
194 return NULL;
195 }
196 oct = SXNET_get_id_INTEGER(sx, izone);
197 ASN1_INTEGER_free(izone);
198 return oct;
199}
200
201ASN1_OCTET_STRING *SXNET_get_id_ulong(SXNET *sx, unsigned long lzone)
202{
203 ASN1_INTEGER *izone;
204 ASN1_OCTET_STRING *oct;
205
206 if ((izone = ASN1_INTEGER_new()) == NULL
207 || !ASN1_INTEGER_set(izone, lzone)) {
208 X509V3err(X509V3_F_SXNET_GET_ID_ULONG, ERR_R_MALLOC_FAILURE);
209 ASN1_INTEGER_free(izone);
210 return NULL;
211 }
212 oct = SXNET_get_id_INTEGER(sx, izone);
213 ASN1_INTEGER_free(izone);
214 return oct;
215}
216
217ASN1_OCTET_STRING *SXNET_get_id_INTEGER(SXNET *sx, ASN1_INTEGER *zone)
218{
219 SXNETID *id;
220 int i;
221 for (i = 0; i < sk_SXNETID_num(sx->ids); i++) {
222 id = sk_SXNETID_value(sx->ids, i);
223 if (!ASN1_INTEGER_cmp(id->zone, zone))
224 return id->user;
225 }
226 return NULL;
227}
228