1 /* Copyright (C) 1995-1998 Eric Young (eay (at) cryptsoft.com) 2 * All rights reserved. 3 * 4 * This package is an SSL implementation written 5 * by Eric Young (eay (at) cryptsoft.com). 6 * The implementation was written so as to conform with Netscapes SSL. 7 * 8 * This library is free for commercial and non-commercial use as long as 9 * the following conditions are aheared to. The following conditions 10 * apply to all code found in this distribution, be it the RC4, RSA, 11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 12 * included with this distribution is covered by the same copyright terms 13 * except that the holder is Tim Hudson (tjh (at) cryptsoft.com). 14 * 15 * Copyright remains Eric Young's, and as such any Copyright notices in 16 * the code are not to be removed. 17 * If this package is used in a product, Eric Young should be given attribution 18 * as the author of the parts of the library used. 19 * This can be in the form of a textual message at program startup or 20 * in documentation (online or textual) provided with the package. 21 * 22 * Redistribution and use in source and binary forms, with or without 23 * modification, are permitted provided that the following conditions 24 * are met: 25 * 1. Redistributions of source code must retain the copyright 26 * notice, this list of conditions and the following disclaimer. 27 * 2. Redistributions in binary form must reproduce the above copyright 28 * notice, this list of conditions and the following disclaimer in the 29 * documentation and/or other materials provided with the distribution. 30 * 3. All advertising materials mentioning features or use of this software 31 * must display the following acknowledgement: 32 * "This product includes cryptographic software written by 33 * Eric Young (eay (at) cryptsoft.com)" 34 * The word 'cryptographic' can be left out if the rouines from the library 35 * being used are not cryptographic related :-). 36 * 4. If you include any Windows specific code (or a derivative thereof) from 37 * the apps directory (application code) you must include an acknowledgement: 38 * "This product includes software written by Tim Hudson (tjh (at) cryptsoft.com)" 39 * 40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 50 * SUCH DAMAGE. 51 * 52 * The licence and distribution terms for any publically available version or 53 * derivative of this code cannot be changed. i.e. this code cannot simply be 54 * copied and put under another distribution licence 55 * [including the GNU Public Licence.] */ 56 57 #include <stdio.h> 58 59 #include <openssl/asn1t.h> 60 #include <openssl/thread.h> 61 #include <openssl/x509.h> 62 63 /* 64 * X509_REQ_INFO is handled in an unusual way to get round invalid encodings. 65 * Some broken certificate requests don't encode the attributes field if it 66 * is empty. This is in violation of PKCS#10 but we need to tolerate it. We 67 * do this by making the attributes field OPTIONAL then using the callback to 68 * initialise it to an empty STACK. This means that the field will be 69 * correctly encoded unless we NULL out the field. As a result we no longer 70 * need the req_kludge field because the information is now contained in the 71 * attributes field: 1. If it is NULL then it's the invalid omission. 2. If 72 * it is empty it is the correct encoding. 3. If it is not empty then some 73 * attributes are present. 74 */ 75 76 static int rinf_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, 77 void *exarg) 78 { 79 X509_REQ_INFO *rinf = (X509_REQ_INFO *)*pval; 80 81 if (operation == ASN1_OP_NEW_POST) { 82 rinf->attributes = sk_X509_ATTRIBUTE_new_null(); 83 if (!rinf->attributes) 84 return 0; 85 } 86 return 1; 87 } 88 89 ASN1_SEQUENCE_enc(X509_REQ_INFO, enc, rinf_cb) = { 90 ASN1_SIMPLE(X509_REQ_INFO, version, ASN1_INTEGER), 91 ASN1_SIMPLE(X509_REQ_INFO, subject, X509_NAME), 92 ASN1_SIMPLE(X509_REQ_INFO, pubkey, X509_PUBKEY), 93 /* This isn't really OPTIONAL but it gets round invalid 94 * encodings 95 */ 96 ASN1_IMP_SET_OF_OPT(X509_REQ_INFO, attributes, X509_ATTRIBUTE, 0) 97 } ASN1_SEQUENCE_END_enc(X509_REQ_INFO, X509_REQ_INFO) 98 99 IMPLEMENT_ASN1_FUNCTIONS(X509_REQ_INFO) 100 101 ASN1_SEQUENCE_ref(X509_REQ, 0) = { 102 ASN1_SIMPLE(X509_REQ, req_info, X509_REQ_INFO), 103 ASN1_SIMPLE(X509_REQ, sig_alg, X509_ALGOR), 104 ASN1_SIMPLE(X509_REQ, signature, ASN1_BIT_STRING) 105 } ASN1_SEQUENCE_END_ref(X509_REQ, X509_REQ) 106 107 IMPLEMENT_ASN1_FUNCTIONS(X509_REQ) 108 109 IMPLEMENT_ASN1_DUP_FUNCTION(X509_REQ) 110
