1 /* crypto/asn1/x_exten.c */ 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 "cryptlib.h" 61 #include <openssl/objects.h> 62 #include <openssl/asn1_mac.h> 63 #include <openssl/x509.h> 64 65 int i2d_X509_EXTENSION(X509_EXTENSION *a, unsigned char **pp) 66 { 67 int k=0; 68 int r=0,ret=0; 69 unsigned char **p=NULL; 70 71 if (a == NULL) return(0); 72 73 p=NULL; 74 for (;;) 75 { 76 if (k) 77 { 78 r=ASN1_object_size(1,ret,V_ASN1_SEQUENCE); 79 if (pp == NULL) return(r); 80 p=pp; 81 ASN1_put_object(p,1,ret,V_ASN1_SEQUENCE, 82 V_ASN1_UNIVERSAL); 83 } 84 85 ret+=i2d_ASN1_OBJECT(a->object,p); 86 if ((a->critical) || a->netscape_hack) 87 ret+=i2d_ASN1_BOOLEAN(a->critical,p); 88 ret+=i2d_ASN1_OCTET_STRING(a->value,p); 89 if (k++) return(r); 90 } 91 } 92 93 X509_EXTENSION *d2i_X509_EXTENSION(X509_EXTENSION **a, unsigned char **pp, 94 long length) 95 { 96 int i; 97 M_ASN1_D2I_vars(a,X509_EXTENSION *,X509_EXTENSION_new); 98 99 M_ASN1_D2I_Init(); 100 M_ASN1_D2I_start_sequence(); 101 M_ASN1_D2I_get(ret->object,d2i_ASN1_OBJECT); 102 103 ret->netscape_hack=0; 104 if ((c.slen != 0) && 105 (M_ASN1_next == (V_ASN1_UNIVERSAL|V_ASN1_BOOLEAN))) 106 { 107 c.q=c.p; 108 if (d2i_ASN1_BOOLEAN(&i,&c.p,c.slen) < 0) goto err; 109 ret->critical=i; 110 c.slen-=(c.p-c.q); 111 if (ret->critical == 0) ret->netscape_hack=1; 112 } 113 M_ASN1_D2I_get(ret->value,d2i_ASN1_OCTET_STRING); 114 115 M_ASN1_D2I_Finish(a,X509_EXTENSION_free,ASN1_F_D2I_X509_EXTENSION); 116 } 117 118 X509_EXTENSION *X509_EXTENSION_new(void) 119 { 120 X509_EXTENSION *ret=NULL; 121 ASN1_CTX c; 122 123 M_ASN1_New_Malloc(ret,X509_EXTENSION); 124 ret->object=OBJ_nid2obj(NID_undef); 125 M_ASN1_New(ret->value,M_ASN1_OCTET_STRING_new); 126 ret->critical=0; 127 ret->netscape_hack=0; 128 return(ret); 129 M_ASN1_New_Error(ASN1_F_X509_EXTENSION_NEW); 130 } 131 132 void X509_EXTENSION_free(X509_EXTENSION *a) 133 { 134 if (a == NULL) return; 135 ASN1_OBJECT_free(a->object); 136 M_ASN1_OCTET_STRING_free(a->value); 137 OPENSSL_free(a); 138 } 139 140