1 /*
2 * Copyright 1999-2024 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
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 ossl_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 int64_t v;
61 char *tmp;
62 SXNETID *id;
63 int i;
64
65 /*
66 * Since we add 1 to the version number to display it, we don't support
67 * LONG_MAX since that would cause on overflow.
68 */
69 if (!ASN1_INTEGER_get_int64(&v, sx->version)
70 || v >= LONG_MAX
71 || v < LONG_MIN) {
72 BIO_printf(out, "%*sVersion: <unsupported>", indent, "");
73 } else {
74 long vl = (long)v;
75
76 BIO_printf(out, "%*sVersion: %ld (0x%lX)", indent, "", vl + 1, vl);
77 }
78 for (i = 0; i < sk_SXNETID_num(sx->ids); i++) {
79 id = sk_SXNETID_value(sx->ids, i);
80 tmp = i2s_ASN1_INTEGER(NULL, id->zone);
81 if (tmp == NULL)
82 return 0;
83 BIO_printf(out, "\n%*sZone: %s, User: ", indent, "", tmp);
84 OPENSSL_free(tmp);
85 ASN1_STRING_print(out, id->user);
86 }
87 return 1;
88 }
89
90 #ifdef SXNET_TEST
91
92 /*
93 * NBB: this is used for testing only. It should *not* be used for anything
94 * else because it will just take static IDs from the configuration file and
95 * they should really be separate values for each user.
96 */
97
sxnet_v2i(X509V3_EXT_METHOD * method,X509V3_CTX * ctx,STACK_OF (CONF_VALUE)* nval)98 static SXNET *sxnet_v2i(X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
99 STACK_OF(CONF_VALUE) *nval)
100 {
101 CONF_VALUE *cnf;
102 SXNET *sx = NULL;
103 int i;
104 for (i = 0; i < sk_CONF_VALUE_num(nval); i++) {
105 cnf = sk_CONF_VALUE_value(nval, i);
106 if (!SXNET_add_id_asc(&sx, cnf->name, cnf->value, -1)) {
107 SXNET_free(sx);
108 return NULL;
109 }
110 }
111 return sx;
112 }
113
114 #endif
115
116 /* Strong Extranet utility functions */
117
118 /* Add an id given the zone as an ASCII number */
119
SXNET_add_id_asc(SXNET ** psx,const char * zone,const char * user,int userlen)120 int SXNET_add_id_asc(SXNET **psx, const char *zone, const char *user, int userlen)
121 {
122 ASN1_INTEGER *izone;
123
124 if ((izone = s2i_ASN1_INTEGER(NULL, zone)) == NULL) {
125 ERR_raise(ERR_LIB_X509V3, X509V3_R_ERROR_CONVERTING_ZONE);
126 return 0;
127 }
128 if (!SXNET_add_id_INTEGER(psx, izone, user, userlen)) {
129 ASN1_INTEGER_free(izone);
130 return 0;
131 }
132 return 1;
133 }
134
135 /* Add an id given the zone as an unsigned long */
136
SXNET_add_id_ulong(SXNET ** psx,unsigned long lzone,const char * user,int userlen)137 int SXNET_add_id_ulong(SXNET **psx, unsigned long lzone, const char *user,
138 int userlen)
139 {
140 ASN1_INTEGER *izone;
141
142 if ((izone = ASN1_INTEGER_new()) == NULL
143 || !ASN1_INTEGER_set(izone, lzone)) {
144 ERR_raise(ERR_LIB_X509V3, ERR_R_ASN1_LIB);
145 ASN1_INTEGER_free(izone);
146 return 0;
147 }
148 if (!SXNET_add_id_INTEGER(psx, izone, user, userlen)) {
149 ASN1_INTEGER_free(izone);
150 return 0;
151 }
152 return 1;
153 }
154
155 /*
156 * Add an id given the zone as an ASN1_INTEGER. Note this version uses the
157 * passed integer and doesn't make a copy so don't free it up afterwards.
158 */
159
SXNET_add_id_INTEGER(SXNET ** psx,ASN1_INTEGER * zone,const char * user,int userlen)160 int SXNET_add_id_INTEGER(SXNET **psx, ASN1_INTEGER *zone, const char *user,
161 int userlen)
162 {
163 SXNET *sx = NULL;
164 SXNETID *id = NULL;
165
166 if (psx == NULL || zone == NULL || user == NULL) {
167 ERR_raise(ERR_LIB_X509V3, X509V3_R_INVALID_NULL_ARGUMENT);
168 return 0;
169 }
170 if (userlen == -1)
171 userlen = strlen(user);
172 if (userlen > 64) {
173 ERR_raise(ERR_LIB_X509V3, X509V3_R_USER_TOO_LONG);
174 return 0;
175 }
176 if (*psx == NULL) {
177 if ((sx = SXNET_new()) == NULL) {
178 ERR_raise(ERR_LIB_X509V3, ERR_R_ASN1_LIB);
179 goto err;
180 }
181 if (!ASN1_INTEGER_set(sx->version, 0)) {
182 ERR_raise(ERR_LIB_X509V3, ERR_R_ASN1_LIB);
183 goto err;
184 }
185 } else
186 sx = *psx;
187 if (SXNET_get_id_INTEGER(sx, zone)) {
188 ERR_raise(ERR_LIB_X509V3, X509V3_R_DUPLICATE_ZONE_ID);
189 if (*psx == NULL)
190 SXNET_free(sx);
191 return 0;
192 }
193
194 if ((id = SXNETID_new()) == NULL) {
195 ERR_raise(ERR_LIB_X509V3, ERR_R_ASN1_LIB);
196 goto err;
197 }
198
199 if (!ASN1_OCTET_STRING_set(id->user, (const unsigned char *)user, userlen)){
200 ERR_raise(ERR_LIB_X509V3, ERR_R_ASN1_LIB);
201 goto err;
202 }
203 if (!sk_SXNETID_push(sx->ids, id)) {
204 ERR_raise(ERR_LIB_X509V3, ERR_R_CRYPTO_LIB);
205 goto err;
206 }
207 ASN1_INTEGER_free(id->zone);
208 id->zone = zone;
209 *psx = sx;
210 return 1;
211
212 err:
213 SXNETID_free(id);
214 if (*psx == NULL)
215 SXNET_free(sx);
216 return 0;
217 }
218
SXNET_get_id_asc(SXNET * sx,const char * zone)219 ASN1_OCTET_STRING *SXNET_get_id_asc(SXNET *sx, const char *zone)
220 {
221 ASN1_INTEGER *izone;
222 ASN1_OCTET_STRING *oct;
223
224 if ((izone = s2i_ASN1_INTEGER(NULL, zone)) == NULL) {
225 ERR_raise(ERR_LIB_X509V3, X509V3_R_ERROR_CONVERTING_ZONE);
226 return NULL;
227 }
228 oct = SXNET_get_id_INTEGER(sx, izone);
229 ASN1_INTEGER_free(izone);
230 return oct;
231 }
232
SXNET_get_id_ulong(SXNET * sx,unsigned long lzone)233 ASN1_OCTET_STRING *SXNET_get_id_ulong(SXNET *sx, unsigned long lzone)
234 {
235 ASN1_INTEGER *izone;
236 ASN1_OCTET_STRING *oct;
237
238 if ((izone = ASN1_INTEGER_new()) == NULL
239 || !ASN1_INTEGER_set(izone, lzone)) {
240 ERR_raise(ERR_LIB_X509V3, ERR_R_ASN1_LIB);
241 ASN1_INTEGER_free(izone);
242 return NULL;
243 }
244 oct = SXNET_get_id_INTEGER(sx, izone);
245 ASN1_INTEGER_free(izone);
246 return oct;
247 }
248
SXNET_get_id_INTEGER(SXNET * sx,ASN1_INTEGER * zone)249 ASN1_OCTET_STRING *SXNET_get_id_INTEGER(SXNET *sx, ASN1_INTEGER *zone)
250 {
251 SXNETID *id;
252 int i;
253 for (i = 0; i < sk_SXNETID_num(sx->ids); i++) {
254 id = sk_SXNETID_value(sx->ids, i);
255 if (!ASN1_INTEGER_cmp(id->zone, zone))
256 return id->user;
257 }
258 return NULL;
259 }
260
