1/* pcy_map.c */ 2/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL 3 * project 2004. 4 */ 5/* ==================================================================== 6 * Copyright (c) 2004 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 "cryptlib.h" 60#include <openssl/x509.h> 61#include <openssl/x509v3.h> 62 63#include "pcy_int.h" 64 65static int ref_cmp(const X509_POLICY_REF * const *a, 66 const X509_POLICY_REF * const *b) 67 { 68 return OBJ_cmp((*a)->subjectDomainPolicy, (*b)->subjectDomainPolicy); 69 } 70 71static void policy_map_free(X509_POLICY_REF *map) 72 { 73 OPENSSL_free(map); 74 } 75 76static X509_POLICY_REF *policy_map_find(X509_POLICY_CACHE *cache, ASN1_OBJECT *id) 77 { 78 X509_POLICY_REF tmp; 79 int idx; 80 tmp.subjectDomainPolicy = id; 81 82 idx = sk_X509_POLICY_REF_find(cache->maps, &tmp); 83 if (idx == -1) 84 return NULL; 85 return sk_X509_POLICY_REF_value(cache->maps, idx); 86 } 87 88/* Set policy mapping entries in cache. 89 * Note: this modifies the passed POLICY_MAPPINGS structure 90 */ 91 92int policy_cache_set_mapping(X509 *x, POLICY_MAPPINGS *maps) 93 { 94 POLICY_MAPPING *map; 95 X509_POLICY_REF *ref = NULL; 96 ASN1_OBJECT *subjectDomainPolicyRef; 97 X509_POLICY_DATA *data; 98 X509_POLICY_CACHE *cache = x->policy_cache; 99 int i; 100 int ret = 0; 101 if (sk_POLICY_MAPPING_num(maps) == 0) 102 { 103 ret = -1; 104 goto bad_mapping; 105 } 106 cache->maps = sk_X509_POLICY_REF_new(ref_cmp); 107 for (i = 0; i < sk_POLICY_MAPPING_num(maps); i++) 108 { 109 map = sk_POLICY_MAPPING_value(maps, i); 110 /* Reject if map to or from anyPolicy */ 111 if ((OBJ_obj2nid(map->subjectDomainPolicy) == NID_any_policy) 112 || (OBJ_obj2nid(map->issuerDomainPolicy) == NID_any_policy)) 113 { 114 ret = -1; 115 goto bad_mapping; 116 } 117 118 /* If we've already mapped from this OID bad mapping */ 119 if (policy_map_find(cache, map->subjectDomainPolicy) != NULL) 120 { 121 ret = -1; 122 goto bad_mapping; 123 } 124 125 /* Attempt to find matching policy data */ 126 data = policy_cache_find_data(cache, map->issuerDomainPolicy); 127 /* If we don't have anyPolicy can't map */ 128 if (!data && !cache->anyPolicy) 129 continue; 130 131 /* Create a NODE from anyPolicy */ 132 if (!data) 133 { 134 data = policy_data_new(NULL, map->issuerDomainPolicy, 135 cache->anyPolicy->flags 136 & POLICY_DATA_FLAG_CRITICAL); 137 if (!data) 138 goto bad_mapping; 139 data->qualifier_set = cache->anyPolicy->qualifier_set; 140 map->issuerDomainPolicy = NULL; 141 data->flags |= POLICY_DATA_FLAG_MAPPED_ANY; 142 data->flags |= POLICY_DATA_FLAG_SHARED_QUALIFIERS; 143 if (!sk_X509_POLICY_DATA_push(cache->data, data)) 144 { 145 policy_data_free(data); 146 goto bad_mapping; 147 } 148 } 149 else 150 data->flags |= POLICY_DATA_FLAG_MAPPED; 151 152 if (!sk_ASN1_OBJECT_push(data->expected_policy_set, 153 map->subjectDomainPolicy)) 154 goto bad_mapping; 155 /* map->subjectDomainPolicy will be freed when 156 * cache->data is freed. Set it to NULL to avoid double-free. */ 157 subjectDomainPolicyRef = map->subjectDomainPolicy; 158 map->subjectDomainPolicy = NULL; 159 160 ref = OPENSSL_malloc(sizeof(X509_POLICY_REF)); 161 if (!ref) 162 goto bad_mapping; 163 164 ref->subjectDomainPolicy = subjectDomainPolicyRef; 165 ref->data = data; 166 167 if (!sk_X509_POLICY_REF_push(cache->maps, ref)) 168 goto bad_mapping; 169 170 ref = NULL; 171 172 } 173 174 ret = 1; 175 bad_mapping: 176 if (ret == -1) 177 x->ex_flags |= EXFLAG_INVALID_POLICY; 178 if (ref) 179 policy_map_free(ref); 180 if (ret <= 0) 181 { 182 sk_X509_POLICY_REF_pop_free(cache->maps, policy_map_free); 183 cache->maps = NULL; 184 } 185 sk_POLICY_MAPPING_pop_free(maps, POLICY_MAPPING_free); 186 return ret; 187 188 } 189