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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 #include <string.h>
61 
62 #include <openssl/asn1.h>
63 #include <openssl/asn1t.h>
64 #include <openssl/conf.h>
65 #include <openssl/err.h>
66 #include <openssl/mem.h>
67 #include <openssl/obj.h>
68 #include <openssl/x509v3.h>
69 
70 
71 /* Support for Thawte strong extranet extension */
72 
73 #define SXNET_TEST
74 
75 static int sxnet_i2r(X509V3_EXT_METHOD *method, SXNET *sx, BIO *out, int indent);
76 #ifdef SXNET_TEST
77 static SXNET * sxnet_v2i(X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
78 						STACK_OF(CONF_VALUE) *nval);
79 #endif
80 const X509V3_EXT_METHOD v3_sxnet = {
81 NID_sxnet, X509V3_EXT_MULTILINE, ASN1_ITEM_ref(SXNET),
82 0,0,0,0,
83 0,0,
84 0,
85 #ifdef SXNET_TEST
86 (X509V3_EXT_V2I)sxnet_v2i,
87 #else
88 0,
89 #endif
90 (X509V3_EXT_I2R)sxnet_i2r,
91 0,
92 NULL
93 };
94 
95 ASN1_SEQUENCE(SXNETID) = {
96 	ASN1_SIMPLE(SXNETID, zone, ASN1_INTEGER),
97 	ASN1_SIMPLE(SXNETID, user, ASN1_OCTET_STRING)
98 } ASN1_SEQUENCE_END(SXNETID)
99 
100 IMPLEMENT_ASN1_FUNCTIONS(SXNETID)
101 
102 ASN1_SEQUENCE(SXNET) = {
103 	ASN1_SIMPLE(SXNET, version, ASN1_INTEGER),
104 	ASN1_SEQUENCE_OF(SXNET, ids, SXNETID)
105 } ASN1_SEQUENCE_END(SXNET)
106 
107 IMPLEMENT_ASN1_FUNCTIONS(SXNET)
108 
109 static int sxnet_i2r(X509V3_EXT_METHOD *method, SXNET *sx, BIO *out,
110 	     int indent)
111 {
112 	long v;
113 	char *tmp;
114 	SXNETID *id;
115 	size_t i;
116 	v = ASN1_INTEGER_get(sx->version);
117 	BIO_printf(out, "%*sVersion: %ld (0x%lX)", indent, "", v + 1, v);
118 	for(i = 0; i < sk_SXNETID_num(sx->ids); i++) {
119 		id = sk_SXNETID_value(sx->ids, i);
120 		tmp = i2s_ASN1_INTEGER(NULL, id->zone);
121 		BIO_printf(out, "\n%*sZone: %s, User: ", indent, "", tmp);
122 		OPENSSL_free(tmp);
123 		M_ASN1_OCTET_STRING_print(out, id->user);
124 	}
125 	return 1;
126 }
127 
128 #ifdef SXNET_TEST
129 
130 /* NBB: this is used for testing only. It should *not* be used for anything
131  * else because it will just take static IDs from the configuration file and
132  * they should really be separate values for each user.
133  */
134 
135 
sxnet_v2i(X509V3_EXT_METHOD * method,X509V3_CTX * ctx,STACK_OF (CONF_VALUE)* nval)136 static SXNET * sxnet_v2i(X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
137 	     STACK_OF(CONF_VALUE) *nval)
138 {
139 	CONF_VALUE *cnf;
140 	SXNET *sx = NULL;
141 	size_t i;
142 	for(i = 0; i < sk_CONF_VALUE_num(nval); i++) {
143 		cnf = sk_CONF_VALUE_value(nval, i);
144 		if(!SXNET_add_id_asc(&sx, cnf->name, cnf->value, -1))
145 								 return NULL;
146 	}
147 	return sx;
148 }
149 
150 
151 #endif
152 
153 /* Strong Extranet utility functions */
154 
155 /* Add an id given the zone as an ASCII number */
156 
SXNET_add_id_asc(SXNET ** psx,char * zone,char * user,int userlen)157 int SXNET_add_id_asc(SXNET **psx, char *zone, char *user,
158 	     int userlen)
159 {
160 	ASN1_INTEGER *izone = NULL;
161 	if(!(izone = s2i_ASN1_INTEGER(NULL, zone))) {
162 		OPENSSL_PUT_ERROR(X509V3, X509V3_R_ERROR_CONVERTING_ZONE);
163 		return 0;
164 	}
165 	return SXNET_add_id_INTEGER(psx, izone, user, userlen);
166 }
167 
168 /* Add an id given the zone as an unsigned long */
169 
SXNET_add_id_ulong(SXNET ** psx,unsigned long lzone,char * user,int userlen)170 int SXNET_add_id_ulong(SXNET **psx, unsigned long lzone, char *user,
171 	     int userlen)
172 {
173 	ASN1_INTEGER *izone = NULL;
174 	if(!(izone = M_ASN1_INTEGER_new()) || !ASN1_INTEGER_set(izone, lzone)) {
175 		OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
176 		M_ASN1_INTEGER_free(izone);
177 		return 0;
178 	}
179 	return SXNET_add_id_INTEGER(psx, izone, user, userlen);
180 
181 }
182 
183 /* Add an id given the zone as an ASN1_INTEGER.
184  * Note this version uses the passed integer and doesn't make a copy so don't
185  * free it up afterwards.
186  */
187 
SXNET_add_id_INTEGER(SXNET ** psx,ASN1_INTEGER * zone,char * user,int userlen)188 int SXNET_add_id_INTEGER(SXNET **psx, ASN1_INTEGER *zone, char *user,
189 	     int userlen)
190 {
191 	SXNET *sx = NULL;
192 	SXNETID *id = NULL;
193 	if(!psx || !zone || !user) {
194 		OPENSSL_PUT_ERROR(X509V3, X509V3_R_INVALID_NULL_ARGUMENT);
195 		return 0;
196 	}
197 	if(userlen == -1) userlen = strlen(user);
198 	if(userlen > 64) {
199 		OPENSSL_PUT_ERROR(X509V3, X509V3_R_USER_TOO_LONG);
200 		return 0;
201 	}
202 	if(!*psx) {
203 		if(!(sx = SXNET_new())) goto err;
204 		if(!ASN1_INTEGER_set(sx->version, 0)) goto err;
205 		*psx = sx;
206 	} else sx = *psx;
207 	if(SXNET_get_id_INTEGER(sx, zone)) {
208 		OPENSSL_PUT_ERROR(X509V3, X509V3_R_DUPLICATE_ZONE_ID);
209 		return 0;
210 	}
211 
212 	if(!(id = SXNETID_new())) goto err;
213 	if(userlen == -1) userlen = strlen(user);
214 
215 	if(!M_ASN1_OCTET_STRING_set(id->user, user, userlen)) goto err;
216 	if(!sk_SXNETID_push(sx->ids, id)) goto err;
217 	id->zone = zone;
218 	return 1;
219 
220 	err:
221 	OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
222 	SXNETID_free(id);
223 	SXNET_free(sx);
224 	*psx = NULL;
225 	return 0;
226 }
227 
SXNET_get_id_asc(SXNET * sx,char * zone)228 ASN1_OCTET_STRING *SXNET_get_id_asc(SXNET *sx, char *zone)
229 {
230 	ASN1_INTEGER *izone = NULL;
231 	ASN1_OCTET_STRING *oct;
232 	if(!(izone = s2i_ASN1_INTEGER(NULL, zone))) {
233 		OPENSSL_PUT_ERROR(X509V3, X509V3_R_ERROR_CONVERTING_ZONE);
234 		return NULL;
235 	}
236 	oct = SXNET_get_id_INTEGER(sx, izone);
237 	M_ASN1_INTEGER_free(izone);
238 	return oct;
239 }
240 
SXNET_get_id_ulong(SXNET * sx,unsigned long lzone)241 ASN1_OCTET_STRING *SXNET_get_id_ulong(SXNET *sx, unsigned long lzone)
242 {
243 	ASN1_INTEGER *izone = NULL;
244 	ASN1_OCTET_STRING *oct;
245 	if(!(izone = M_ASN1_INTEGER_new()) || !ASN1_INTEGER_set(izone, lzone)) {
246 		OPENSSL_PUT_ERROR(X509V3, ERR_R_MALLOC_FAILURE);
247 		M_ASN1_INTEGER_free(izone);
248 		return NULL;
249 	}
250 	oct = SXNET_get_id_INTEGER(sx, izone);
251 	M_ASN1_INTEGER_free(izone);
252 	return oct;
253 }
254 
SXNET_get_id_INTEGER(SXNET * sx,ASN1_INTEGER * zone)255 ASN1_OCTET_STRING *SXNET_get_id_INTEGER(SXNET *sx, ASN1_INTEGER *zone)
256 {
257 	SXNETID *id;
258 	size_t i;
259 	for(i = 0; i < sk_SXNETID_num(sx->ids); i++) {
260 		id = sk_SXNETID_value(sx->ids, i);
261 		if(!M_ASN1_INTEGER_cmp(id->zone, zone)) return id->user;
262 	}
263 	return NULL;
264 }
265 
266 IMPLEMENT_ASN1_SET_OF(SXNETID)
267