1 /*
2 * Copyright 1999-2016 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the OpenSSL license (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
22 static int sxnet_i2r(X509V3_EXT_METHOD *method, SXNET *sx, BIO *out,
23 int indent);
24 #ifdef SXNET_TEST
25 static SXNET *sxnet_v2i(X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
26 STACK_OF(CONF_VALUE) *nval);
27 #endif
28 const 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
43 ASN1_SEQUENCE(SXNETID) = {
44 ASN1_SIMPLE(SXNETID, zone, ASN1_INTEGER),
45 ASN1_SIMPLE(SXNETID, user, ASN1_OCTET_STRING)
46 } ASN1_SEQUENCE_END(SXNETID)
47
48 IMPLEMENT_ASN1_FUNCTIONS(SXNETID)
49
50 ASN1_SEQUENCE(SXNET) = {
51 ASN1_SIMPLE(SXNET, version, ASN1_INTEGER),
52 ASN1_SEQUENCE_OF(SXNET, ids, SXNETID)
53 } ASN1_SEQUENCE_END(SXNET)
54
55 IMPLEMENT_ASN1_FUNCTIONS(SXNET)
56
57 static 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
sxnet_v2i(X509V3_EXT_METHOD * method,X509V3_CTX * ctx,STACK_OF (CONF_VALUE)* nval)84 static 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
SXNET_add_id_asc(SXNET ** psx,const char * zone,const char * user,int userlen)104 int 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
SXNET_add_id_ulong(SXNET ** psx,unsigned long lzone,const char * user,int userlen)117 int 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
SXNET_add_id_INTEGER(SXNET ** psx,ASN1_INTEGER * zone,const char * user,int userlen)137 int 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 if (!psx || !zone || !user) {
143 X509V3err(X509V3_F_SXNET_ADD_ID_INTEGER,
144 X509V3_R_INVALID_NULL_ARGUMENT);
145 return 0;
146 }
147 if (userlen == -1)
148 userlen = strlen(user);
149 if (userlen > 64) {
150 X509V3err(X509V3_F_SXNET_ADD_ID_INTEGER, X509V3_R_USER_TOO_LONG);
151 return 0;
152 }
153 if (*psx == NULL) {
154 if ((sx = SXNET_new()) == NULL)
155 goto err;
156 if (!ASN1_INTEGER_set(sx->version, 0))
157 goto err;
158 *psx = sx;
159 } else
160 sx = *psx;
161 if (SXNET_get_id_INTEGER(sx, zone)) {
162 X509V3err(X509V3_F_SXNET_ADD_ID_INTEGER, X509V3_R_DUPLICATE_ZONE_ID);
163 return 0;
164 }
165
166 if ((id = SXNETID_new()) == NULL)
167 goto err;
168 if (userlen == -1)
169 userlen = strlen(user);
170
171 if (!ASN1_OCTET_STRING_set(id->user, (const unsigned char *)user, userlen))
172 goto err;
173 if (!sk_SXNETID_push(sx->ids, id))
174 goto err;
175 id->zone = zone;
176 return 1;
177
178 err:
179 X509V3err(X509V3_F_SXNET_ADD_ID_INTEGER, ERR_R_MALLOC_FAILURE);
180 SXNETID_free(id);
181 SXNET_free(sx);
182 *psx = NULL;
183 return 0;
184 }
185
SXNET_get_id_asc(SXNET * sx,const char * zone)186 ASN1_OCTET_STRING *SXNET_get_id_asc(SXNET *sx, const char *zone)
187 {
188 ASN1_INTEGER *izone;
189 ASN1_OCTET_STRING *oct;
190
191 if ((izone = s2i_ASN1_INTEGER(NULL, zone)) == NULL) {
192 X509V3err(X509V3_F_SXNET_GET_ID_ASC, X509V3_R_ERROR_CONVERTING_ZONE);
193 return NULL;
194 }
195 oct = SXNET_get_id_INTEGER(sx, izone);
196 ASN1_INTEGER_free(izone);
197 return oct;
198 }
199
SXNET_get_id_ulong(SXNET * sx,unsigned long lzone)200 ASN1_OCTET_STRING *SXNET_get_id_ulong(SXNET *sx, unsigned long lzone)
201 {
202 ASN1_INTEGER *izone;
203 ASN1_OCTET_STRING *oct;
204
205 if ((izone = ASN1_INTEGER_new()) == NULL
206 || !ASN1_INTEGER_set(izone, lzone)) {
207 X509V3err(X509V3_F_SXNET_GET_ID_ULONG, ERR_R_MALLOC_FAILURE);
208 ASN1_INTEGER_free(izone);
209 return NULL;
210 }
211 oct = SXNET_get_id_INTEGER(sx, izone);
212 ASN1_INTEGER_free(izone);
213 return oct;
214 }
215
SXNET_get_id_INTEGER(SXNET * sx,ASN1_INTEGER * zone)216 ASN1_OCTET_STRING *SXNET_get_id_INTEGER(SXNET *sx, ASN1_INTEGER *zone)
217 {
218 SXNETID *id;
219 int i;
220 for (i = 0; i < sk_SXNETID_num(sx->ids); i++) {
221 id = sk_SXNETID_value(sx->ids, i);
222 if (!ASN1_INTEGER_cmp(id->zone, zone))
223 return id->user;
224 }
225 return NULL;
226 }
227