1 /* crypto/asn1/x_req.c */ 2 /* Copyright (C) 1995-1998 Eric Young (eay (at) cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay (at) 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 (at) 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 (at) 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 (at) 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/asn1t.h> 62 #include <openssl/x509.h> 63 64 /* X509_REQ_INFO is handled in an unusual way to get round 65 * invalid encodings. Some broken certificate requests don't 66 * encode the attributes field if it is empty. This is in 67 * violation of PKCS#10 but we need to tolerate it. We do 68 * this by making the attributes field OPTIONAL then using 69 * the callback to initialise it to an empty STACK. 70 * 71 * This means that the field will be correctly encoded unless 72 * we NULL out the field. 73 * 74 * As a result we no longer need the req_kludge field because 75 * the information is now contained in the attributes field: 76 * 1. If it is NULL then it's the invalid omission. 77 * 2. If it is empty it is the correct encoding. 78 * 3. If it is not empty then some attributes are present. 79 * 80 */ 81 82 static int rinf_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, 83 void *exarg) 84 { 85 X509_REQ_INFO *rinf = (X509_REQ_INFO *)*pval; 86 87 if(operation == ASN1_OP_NEW_POST) { 88 rinf->attributes = sk_X509_ATTRIBUTE_new_null(); 89 if(!rinf->attributes) return 0; 90 } 91 return 1; 92 } 93 94 ASN1_SEQUENCE_enc(X509_REQ_INFO, enc, rinf_cb) = { 95 ASN1_SIMPLE(X509_REQ_INFO, version, ASN1_INTEGER), 96 ASN1_SIMPLE(X509_REQ_INFO, subject, X509_NAME), 97 ASN1_SIMPLE(X509_REQ_INFO, pubkey, X509_PUBKEY), 98 /* This isn't really OPTIONAL but it gets round invalid 99 * encodings 100 */ 101 ASN1_IMP_SET_OF_OPT(X509_REQ_INFO, attributes, X509_ATTRIBUTE, 0) 102 } ASN1_SEQUENCE_END_enc(X509_REQ_INFO, X509_REQ_INFO) 103 104 IMPLEMENT_ASN1_FUNCTIONS(X509_REQ_INFO) 105 106 ASN1_SEQUENCE_ref(X509_REQ, 0, CRYPTO_LOCK_X509_REQ) = { 107 ASN1_SIMPLE(X509_REQ, req_info, X509_REQ_INFO), 108 ASN1_SIMPLE(X509_REQ, sig_alg, X509_ALGOR), 109 ASN1_SIMPLE(X509_REQ, signature, ASN1_BIT_STRING) 110 } ASN1_SEQUENCE_END_ref(X509_REQ, X509_REQ) 111 112 IMPLEMENT_ASN1_FUNCTIONS(X509_REQ) 113 IMPLEMENT_ASN1_DUP_FUNCTION(X509_REQ) 114
