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1 /* v3_sxnet.c */
2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
3  * project 1999.
4  */
5 /* ====================================================================
6  * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  *
12  * 1. Redistributions of source code must retain the above copyright
13  *    notice, this list of conditions and the following disclaimer.
14  *
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice, this list of conditions and the following disclaimer in
17  *    the documentation and/or other materials provided with the
18  *    distribution.
19  *
20  * 3. All advertising materials mentioning features or use of this
21  *    software must display the following acknowledgment:
22  *    "This product includes software developed by the OpenSSL Project
23  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24  *
25  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26  *    endorse or promote products derived from this software without
27  *    prior written permission. For written permission, please contact
28  *    licensing@OpenSSL.org.
29  *
30  * 5. Products derived from this software may not be called "OpenSSL"
31  *    nor may "OpenSSL" appear in their names without prior written
32  *    permission of the OpenSSL Project.
33  *
34  * 6. Redistributions of any form whatsoever must retain the following
35  *    acknowledgment:
36  *    "This product includes software developed by the OpenSSL Project
37  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38  *
39  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
43  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50  * OF THE POSSIBILITY OF SUCH DAMAGE.
51  * ====================================================================
52  *
53  * This product includes cryptographic software written by Eric Young
54  * (eay@cryptsoft.com).  This product includes software written by Tim
55  * Hudson (tjh@cryptsoft.com).
56  *
57  */
58 
59 #include <stdio.h>
60 
61 #include <openssl/asn1.h>
62 #include <openssl/asn1t.h>
63 #include <openssl/conf.h>
64 #include <openssl/err.h>
65 #include <openssl/mem.h>
66 #include <openssl/obj.h>
67 #include <openssl/x509v3.h>
68 
69 
70 /* Support for Thawte strong extranet extension */
71 
72 #define SXNET_TEST
73 
74 static int sxnet_i2r(X509V3_EXT_METHOD *method, SXNET *sx, BIO *out, int indent);
75 #ifdef SXNET_TEST
76 static SXNET * sxnet_v2i(X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
77 						STACK_OF(CONF_VALUE) *nval);
78 #endif
79 const X509V3_EXT_METHOD v3_sxnet = {
80 NID_sxnet, X509V3_EXT_MULTILINE, ASN1_ITEM_ref(SXNET),
81 0,0,0,0,
82 0,0,
83 0,
84 #ifdef SXNET_TEST
85 (X509V3_EXT_V2I)sxnet_v2i,
86 #else
87 0,
88 #endif
89 (X509V3_EXT_I2R)sxnet_i2r,
90 0,
91 NULL
92 };
93 
94 ASN1_SEQUENCE(SXNETID) = {
95 	ASN1_SIMPLE(SXNETID, zone, ASN1_INTEGER),
96 	ASN1_SIMPLE(SXNETID, user, ASN1_OCTET_STRING)
97 } ASN1_SEQUENCE_END(SXNETID)
98 
99 IMPLEMENT_ASN1_FUNCTIONS(SXNETID)
100 
101 ASN1_SEQUENCE(SXNET) = {
102 	ASN1_SIMPLE(SXNET, version, ASN1_INTEGER),
103 	ASN1_SEQUENCE_OF(SXNET, ids, SXNETID)
104 } ASN1_SEQUENCE_END(SXNET)
105 
106 IMPLEMENT_ASN1_FUNCTIONS(SXNET)
107 
108 static int sxnet_i2r(X509V3_EXT_METHOD *method, SXNET *sx, BIO *out,
109 	     int indent)
110 {
111 	long v;
112 	char *tmp;
113 	SXNETID *id;
114 	size_t i;
115 	v = ASN1_INTEGER_get(sx->version);
116 	BIO_printf(out, "%*sVersion: %ld (0x%lX)", indent, "", v + 1, v);
117 	for(i = 0; i < sk_SXNETID_num(sx->ids); i++) {
118 		id = sk_SXNETID_value(sx->ids, i);
119 		tmp = i2s_ASN1_INTEGER(NULL, id->zone);
120 		BIO_printf(out, "\n%*sZone: %s, User: ", indent, "", tmp);
121 		OPENSSL_free(tmp);
122 		M_ASN1_OCTET_STRING_print(out, id->user);
123 	}
124 	return 1;
125 }
126 
127 #ifdef SXNET_TEST
128 
129 /* NBB: this is used for testing only. It should *not* be used for anything
130  * else because it will just take static IDs from the configuration file and
131  * they should really be separate values for each user.
132  */
133 
134 
sxnet_v2i(X509V3_EXT_METHOD * method,X509V3_CTX * ctx,STACK_OF (CONF_VALUE)* nval)135 static SXNET * sxnet_v2i(X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
136 	     STACK_OF(CONF_VALUE) *nval)
137 {
138 	CONF_VALUE *cnf;
139 	SXNET *sx = NULL;
140 	size_t i;
141 	for(i = 0; i < sk_CONF_VALUE_num(nval); i++) {
142 		cnf = sk_CONF_VALUE_value(nval, i);
143 		if(!SXNET_add_id_asc(&sx, cnf->name, cnf->value, -1))
144 								 return NULL;
145 	}
146 	return sx;
147 }
148 
149 
150 #endif
151 
152 /* Strong Extranet utility functions */
153 
154 /* Add an id given the zone as an ASCII number */
155 
SXNET_add_id_asc(SXNET ** psx,char * zone,char * user,int userlen)156 int SXNET_add_id_asc(SXNET **psx, char *zone, char *user,
157 	     int userlen)
158 {
159 	ASN1_INTEGER *izone = NULL;
160 	if(!(izone = s2i_ASN1_INTEGER(NULL, zone))) {
161 		OPENSSL_PUT_ERROR(X509V3, SXNET_add_id_asc, 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 
SXNET_add_id_ulong(SXNET ** psx,unsigned long lzone,char * user,int userlen)169 int 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, SXNET_add_id_ulong, 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 /* Add an id given the zone as an ASN1_INTEGER.
183  * Note this version uses the passed integer and doesn't make a copy so don't
184  * free it up afterwards.
185  */
186 
SXNET_add_id_INTEGER(SXNET ** psx,ASN1_INTEGER * zone,char * user,int userlen)187 int 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, SXNET_add_id_INTEGER, X509V3_R_INVALID_NULL_ARGUMENT);
194 		return 0;
195 	}
196 	if(userlen == -1) userlen = strlen(user);
197 	if(userlen > 64) {
198 		OPENSSL_PUT_ERROR(X509V3, SXNET_add_id_INTEGER, X509V3_R_USER_TOO_LONG);
199 		return 0;
200 	}
201 	if(!*psx) {
202 		if(!(sx = SXNET_new())) goto err;
203 		if(!ASN1_INTEGER_set(sx->version, 0)) goto err;
204 		*psx = sx;
205 	} else sx = *psx;
206 	if(SXNET_get_id_INTEGER(sx, zone)) {
207 		OPENSSL_PUT_ERROR(X509V3, SXNET_add_id_INTEGER, X509V3_R_DUPLICATE_ZONE_ID);
208 		return 0;
209 	}
210 
211 	if(!(id = SXNETID_new())) goto err;
212 	if(userlen == -1) userlen = strlen(user);
213 
214 	if(!M_ASN1_OCTET_STRING_set(id->user, user, userlen)) goto err;
215 	if(!sk_SXNETID_push(sx->ids, id)) goto err;
216 	id->zone = zone;
217 	return 1;
218 
219 	err:
220 	OPENSSL_PUT_ERROR(X509V3, SXNET_add_id_INTEGER, ERR_R_MALLOC_FAILURE);
221 	SXNETID_free(id);
222 	SXNET_free(sx);
223 	*psx = NULL;
224 	return 0;
225 }
226 
SXNET_get_id_asc(SXNET * sx,char * zone)227 ASN1_OCTET_STRING *SXNET_get_id_asc(SXNET *sx, char *zone)
228 {
229 	ASN1_INTEGER *izone = NULL;
230 	ASN1_OCTET_STRING *oct;
231 	if(!(izone = s2i_ASN1_INTEGER(NULL, zone))) {
232 		OPENSSL_PUT_ERROR(X509V3, SXNET_get_id_asc, X509V3_R_ERROR_CONVERTING_ZONE);
233 		return NULL;
234 	}
235 	oct = SXNET_get_id_INTEGER(sx, izone);
236 	M_ASN1_INTEGER_free(izone);
237 	return oct;
238 }
239 
SXNET_get_id_ulong(SXNET * sx,unsigned long lzone)240 ASN1_OCTET_STRING *SXNET_get_id_ulong(SXNET *sx, unsigned long lzone)
241 {
242 	ASN1_INTEGER *izone = NULL;
243 	ASN1_OCTET_STRING *oct;
244 	if(!(izone = M_ASN1_INTEGER_new()) || !ASN1_INTEGER_set(izone, lzone)) {
245 		OPENSSL_PUT_ERROR(X509V3, SXNET_get_id_ulong, ERR_R_MALLOC_FAILURE);
246 		M_ASN1_INTEGER_free(izone);
247 		return NULL;
248 	}
249 	oct = SXNET_get_id_INTEGER(sx, izone);
250 	M_ASN1_INTEGER_free(izone);
251 	return oct;
252 }
253 
SXNET_get_id_INTEGER(SXNET * sx,ASN1_INTEGER * zone)254 ASN1_OCTET_STRING *SXNET_get_id_INTEGER(SXNET *sx, ASN1_INTEGER *zone)
255 {
256 	SXNETID *id;
257 	size_t i;
258 	for(i = 0; i < sk_SXNETID_num(sx->ids); i++) {
259 		id = sk_SXNETID_value(sx->ids, i);
260 		if(!M_ASN1_INTEGER_cmp(id->zone, zone)) return id->user;
261 	}
262 	return NULL;
263 }
264 
265 IMPLEMENT_ASN1_SET_OF(SXNETID)
266