1 /* $OpenBSD: obj_lib.c,v 1.16 2022/01/07 11:13:54 tb Exp $ */ 2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay@cryptsoft.com). 7 * The implementation was written so as to conform with Netscapes SSL. 8 * 9 * This library is free for commercial and non-commercial use as long as 10 * the following conditions are aheared to. The following conditions 11 * apply to all code found in this distribution, be it the RC4, RSA, 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13 * included with this distribution is covered by the same copyright terms 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15 * 16 * Copyright remains Eric Young's, and as such any Copyright notices in 17 * the code are not to be removed. 18 * If this package is used in a product, Eric Young should be given attribution 19 * as the author of the parts of the library used. 20 * This can be in the form of a textual message at program startup or 21 * in documentation (online or textual) provided with the package. 22 * 23 * Redistribution and use in source and binary forms, with or without 24 * modification, are permitted provided that the following conditions 25 * are met: 26 * 1. Redistributions of source code must retain the copyright 27 * notice, this list of conditions and the following disclaimer. 28 * 2. Redistributions in binary form must reproduce the above copyright 29 * notice, this list of conditions and the following disclaimer in the 30 * documentation and/or other materials provided with the distribution. 31 * 3. All advertising materials mentioning features or use of this software 32 * must display the following acknowledgement: 33 * "This product includes cryptographic software written by 34 * Eric Young (eay@cryptsoft.com)" 35 * The word 'cryptographic' can be left out if the rouines from the library 36 * being used are not cryptographic related :-). 37 * 4. If you include any Windows specific code (or a derivative thereof) from 38 * the apps directory (application code) you must include an acknowledgement: 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40 * 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51 * SUCH DAMAGE. 52 * 53 * The licence and distribution terms for any publically available version or 54 * derivative of this code cannot be changed. i.e. this code cannot simply be 55 * copied and put under another distribution licence 56 * [including the GNU Public Licence.] 57 */ 58 59 #include <stdio.h> 60 #include <string.h> 61 62 #include <openssl/err.h> 63 #include <openssl/buffer.h> 64 #include <openssl/lhash.h> 65 #include <openssl/objects.h> 66 67 #include "asn1_locl.h" 68 69 ASN1_OBJECT * 70 OBJ_dup(const ASN1_OBJECT *o) 71 { 72 ASN1_OBJECT *r; 73 char *ln = NULL, *sn = NULL; 74 unsigned char *data = NULL; 75 76 if (o == NULL) 77 return (NULL); 78 if (!(o->flags & ASN1_OBJECT_FLAG_DYNAMIC)) 79 return((ASN1_OBJECT *)o); /* XXX: ugh! Why? What kind of 80 duplication is this??? */ 81 82 r = ASN1_OBJECT_new(); 83 if (r == NULL) { 84 OBJerror(ERR_R_ASN1_LIB); 85 return (NULL); 86 } 87 data = malloc(o->length); 88 if (data == NULL) 89 goto err; 90 if (o->data != NULL) 91 memcpy(data, o->data, o->length); 92 /* once data attached to object it remains const */ 93 r->data = data; 94 r->length = o->length; 95 r->nid = o->nid; 96 r->ln = r->sn = NULL; 97 if (o->ln != NULL) { 98 ln = strdup(o->ln); 99 if (ln == NULL) 100 goto err; 101 r->ln = ln; 102 } 103 104 if (o->sn != NULL) { 105 sn = strdup(o->sn); 106 if (sn == NULL) 107 goto err; 108 r->sn = sn; 109 } 110 r->flags = o->flags | (ASN1_OBJECT_FLAG_DYNAMIC | 111 ASN1_OBJECT_FLAG_DYNAMIC_STRINGS | ASN1_OBJECT_FLAG_DYNAMIC_DATA); 112 return (r); 113 114 err: 115 OBJerror(ERR_R_MALLOC_FAILURE); 116 free(ln); 117 free(sn); 118 free(data); 119 free(r); 120 return (NULL); 121 } 122 123 int 124 OBJ_cmp(const ASN1_OBJECT *a, const ASN1_OBJECT *b) 125 { 126 int ret; 127 128 ret = (a->length - b->length); 129 if (ret) 130 return (ret); 131 return (memcmp(a->data, b->data, a->length)); 132 } 133