1 /*
2 * Copyright 1999-2022 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 return NULL;
108 }
109 return sx;
110 }
111
112 #endif
113
114 /* Strong Extranet utility functions */
115
116 /* Add an id given the zone as an ASCII number */
117
SXNET_add_id_asc(SXNET ** psx,const char * zone,const char * user,int userlen)118 int SXNET_add_id_asc(SXNET **psx, const char *zone, const char *user, int userlen)
119 {
120 ASN1_INTEGER *izone;
121
122 if ((izone = s2i_ASN1_INTEGER(NULL, zone)) == NULL) {
123 ERR_raise(ERR_LIB_X509V3, X509V3_R_ERROR_CONVERTING_ZONE);
124 return 0;
125 }
126 return SXNET_add_id_INTEGER(psx, izone, user, userlen);
127 }
128
129 /* Add an id given the zone as an unsigned long */
130
SXNET_add_id_ulong(SXNET ** psx,unsigned long lzone,const char * user,int userlen)131 int SXNET_add_id_ulong(SXNET **psx, unsigned long lzone, const char *user,
132 int userlen)
133 {
134 ASN1_INTEGER *izone;
135
136 if ((izone = ASN1_INTEGER_new()) == NULL
137 || !ASN1_INTEGER_set(izone, lzone)) {
138 ERR_raise(ERR_LIB_X509V3, ERR_R_MALLOC_FAILURE);
139 ASN1_INTEGER_free(izone);
140 return 0;
141 }
142 return SXNET_add_id_INTEGER(psx, izone, user, userlen);
143
144 }
145
146 /*
147 * Add an id given the zone as an ASN1_INTEGER. Note this version uses the
148 * passed integer and doesn't make a copy so don't free it up afterwards.
149 */
150
SXNET_add_id_INTEGER(SXNET ** psx,ASN1_INTEGER * zone,const char * user,int userlen)151 int SXNET_add_id_INTEGER(SXNET **psx, ASN1_INTEGER *zone, const char *user,
152 int userlen)
153 {
154 SXNET *sx = NULL;
155 SXNETID *id = NULL;
156
157 if (psx == NULL || zone == NULL || user == NULL) {
158 ERR_raise(ERR_LIB_X509V3, X509V3_R_INVALID_NULL_ARGUMENT);
159 return 0;
160 }
161 if (userlen == -1)
162 userlen = strlen(user);
163 if (userlen > 64) {
164 ERR_raise(ERR_LIB_X509V3, X509V3_R_USER_TOO_LONG);
165 return 0;
166 }
167 if (*psx == NULL) {
168 if ((sx = SXNET_new()) == NULL)
169 goto err;
170 if (!ASN1_INTEGER_set(sx->version, 0))
171 goto err;
172 } else
173 sx = *psx;
174 if (SXNET_get_id_INTEGER(sx, zone)) {
175 ERR_raise(ERR_LIB_X509V3, X509V3_R_DUPLICATE_ZONE_ID);
176 if (*psx == NULL)
177 SXNET_free(sx);
178 return 0;
179 }
180
181 if ((id = SXNETID_new()) == NULL)
182 goto err;
183
184 if (!ASN1_OCTET_STRING_set(id->user, (const unsigned char *)user, userlen))
185 goto err;
186 if (!sk_SXNETID_push(sx->ids, id))
187 goto err;
188 id->zone = zone;
189 *psx = sx;
190 return 1;
191
192 err:
193 ERR_raise(ERR_LIB_X509V3, ERR_R_MALLOC_FAILURE);
194 SXNETID_free(id);
195 if (*psx == NULL)
196 SXNET_free(sx);
197 return 0;
198 }
199
SXNET_get_id_asc(SXNET * sx,const char * zone)200 ASN1_OCTET_STRING *SXNET_get_id_asc(SXNET *sx, const char *zone)
201 {
202 ASN1_INTEGER *izone;
203 ASN1_OCTET_STRING *oct;
204
205 if ((izone = s2i_ASN1_INTEGER(NULL, zone)) == NULL) {
206 ERR_raise(ERR_LIB_X509V3, X509V3_R_ERROR_CONVERTING_ZONE);
207 return NULL;
208 }
209 oct = SXNET_get_id_INTEGER(sx, izone);
210 ASN1_INTEGER_free(izone);
211 return oct;
212 }
213
SXNET_get_id_ulong(SXNET * sx,unsigned long lzone)214 ASN1_OCTET_STRING *SXNET_get_id_ulong(SXNET *sx, unsigned long lzone)
215 {
216 ASN1_INTEGER *izone;
217 ASN1_OCTET_STRING *oct;
218
219 if ((izone = ASN1_INTEGER_new()) == NULL
220 || !ASN1_INTEGER_set(izone, lzone)) {
221 ERR_raise(ERR_LIB_X509V3, ERR_R_MALLOC_FAILURE);
222 ASN1_INTEGER_free(izone);
223 return NULL;
224 }
225 oct = SXNET_get_id_INTEGER(sx, izone);
226 ASN1_INTEGER_free(izone);
227 return oct;
228 }
229
SXNET_get_id_INTEGER(SXNET * sx,ASN1_INTEGER * zone)230 ASN1_OCTET_STRING *SXNET_get_id_INTEGER(SXNET *sx, ASN1_INTEGER *zone)
231 {
232 SXNETID *id;
233 int i;
234 for (i = 0; i < sk_SXNETID_num(sx->ids); i++) {
235 id = sk_SXNETID_value(sx->ids, i);
236 if (!ASN1_INTEGER_cmp(id->zone, zone))
237 return id->user;
238 }
239 return NULL;
240 }
241
