1 /* $OpenBSD: x509_bitst.c,v 1.2 2022/11/14 17:48:50 beck Exp $ */ 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/conf.h> 63 #include <openssl/err.h> 64 #include <openssl/x509v3.h> 65 66 static BIT_STRING_BITNAME ns_cert_type_table[] = { 67 {0, "SSL Client", "client"}, 68 {1, "SSL Server", "server"}, 69 {2, "S/MIME", "email"}, 70 {3, "Object Signing", "objsign"}, 71 {4, "Unused", "reserved"}, 72 {5, "SSL CA", "sslCA"}, 73 {6, "S/MIME CA", "emailCA"}, 74 {7, "Object Signing CA", "objCA"}, 75 {-1, NULL, NULL} 76 }; 77 78 static BIT_STRING_BITNAME key_usage_type_table[] = { 79 {0, "Digital Signature", "digitalSignature"}, 80 {1, "Non Repudiation", "nonRepudiation"}, 81 {2, "Key Encipherment", "keyEncipherment"}, 82 {3, "Data Encipherment", "dataEncipherment"}, 83 {4, "Key Agreement", "keyAgreement"}, 84 {5, "Certificate Sign", "keyCertSign"}, 85 {6, "CRL Sign", "cRLSign"}, 86 {7, "Encipher Only", "encipherOnly"}, 87 {8, "Decipher Only", "decipherOnly"}, 88 {-1, NULL, NULL} 89 }; 90 91 const X509V3_EXT_METHOD v3_nscert = { 92 .ext_nid = NID_netscape_cert_type, 93 .ext_flags = 0, 94 .it = &ASN1_BIT_STRING_it, 95 .ext_new = NULL, 96 .ext_free = NULL, 97 .d2i = NULL, 98 .i2d = NULL, 99 .i2s = NULL, 100 .s2i = NULL, 101 .i2v = (X509V3_EXT_I2V)i2v_ASN1_BIT_STRING, 102 .v2i = (X509V3_EXT_V2I)v2i_ASN1_BIT_STRING, 103 .i2r = NULL, 104 .r2i = NULL, 105 .usr_data = ns_cert_type_table, 106 }; 107 108 const X509V3_EXT_METHOD v3_key_usage = { 109 .ext_nid = NID_key_usage, 110 .ext_flags = 0, 111 .it = &ASN1_BIT_STRING_it, 112 .ext_new = NULL, 113 .ext_free = NULL, 114 .d2i = NULL, 115 .i2d = NULL, 116 .i2s = NULL, 117 .s2i = NULL, 118 .i2v = (X509V3_EXT_I2V)i2v_ASN1_BIT_STRING, 119 .v2i = (X509V3_EXT_V2I)v2i_ASN1_BIT_STRING, 120 .i2r = NULL, 121 .r2i = NULL, 122 .usr_data = key_usage_type_table, 123 }; 124 125 STACK_OF(CONF_VALUE) * 126 i2v_ASN1_BIT_STRING(X509V3_EXT_METHOD *method, ASN1_BIT_STRING *bits, 127 STACK_OF(CONF_VALUE) *ret) 128 { 129 BIT_STRING_BITNAME *bnam; 130 STACK_OF(CONF_VALUE) *free_ret = NULL; 131 132 if (ret == NULL) { 133 if ((free_ret = ret = sk_CONF_VALUE_new_null()) == NULL) 134 return NULL; 135 } 136 137 for (bnam = method->usr_data; bnam->lname != NULL; bnam++) { 138 if (!ASN1_BIT_STRING_get_bit(bits, bnam->bitnum)) 139 continue; 140 if (!X509V3_add_value(bnam->lname, NULL, &ret)) 141 goto err; 142 } 143 144 return ret; 145 146 err: 147 sk_CONF_VALUE_pop_free(free_ret, X509V3_conf_free); 148 149 return NULL; 150 } 151 LCRYPTO_ALIAS(i2v_ASN1_BIT_STRING) 152 153 ASN1_BIT_STRING * 154 v2i_ASN1_BIT_STRING(X509V3_EXT_METHOD *method, X509V3_CTX *ctx, 155 STACK_OF(CONF_VALUE) *nval) 156 { 157 CONF_VALUE *val; 158 ASN1_BIT_STRING *bs; 159 int i; 160 BIT_STRING_BITNAME *bnam; 161 162 if (!(bs = ASN1_BIT_STRING_new())) { 163 X509V3error(ERR_R_MALLOC_FAILURE); 164 return NULL; 165 } 166 for (i = 0; i < sk_CONF_VALUE_num(nval); i++) { 167 val = sk_CONF_VALUE_value(nval, i); 168 for (bnam = method->usr_data; bnam->lname; bnam++) { 169 if (!strcmp(bnam->sname, val->name) || 170 !strcmp(bnam->lname, val->name) ) { 171 if (!ASN1_BIT_STRING_set_bit(bs, 172 bnam->bitnum, 1)) { 173 X509V3error(ERR_R_MALLOC_FAILURE); 174 ASN1_BIT_STRING_free(bs); 175 return NULL; 176 } 177 break; 178 } 179 } 180 if (!bnam->lname) { 181 X509V3error(X509V3_R_UNKNOWN_BIT_STRING_ARGUMENT); 182 X509V3_conf_err(val); 183 ASN1_BIT_STRING_free(bs); 184 return NULL; 185 } 186 } 187 return bs; 188 } 189 LCRYPTO_ALIAS(v2i_ASN1_BIT_STRING) 190