155714Skris/* crypto/asn1/x_req.c */ 255714Skris/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 355714Skris * All rights reserved. 455714Skris * 555714Skris * This package is an SSL implementation written 655714Skris * by Eric Young (eay@cryptsoft.com). 755714Skris * The implementation was written so as to conform with Netscapes SSL. 8280304Sjkim * 955714Skris * This library is free for commercial and non-commercial use as long as 1055714Skris * the following conditions are aheared to. The following conditions 1155714Skris * apply to all code found in this distribution, be it the RC4, RSA, 1255714Skris * lhash, DES, etc., code; not just the SSL code. The SSL documentation 1355714Skris * included with this distribution is covered by the same copyright terms 1455714Skris * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15280304Sjkim * 1655714Skris * Copyright remains Eric Young's, and as such any Copyright notices in 1755714Skris * the code are not to be removed. 1855714Skris * If this package is used in a product, Eric Young should be given attribution 1955714Skris * as the author of the parts of the library used. 2055714Skris * This can be in the form of a textual message at program startup or 2155714Skris * in documentation (online or textual) provided with the package. 22280304Sjkim * 2355714Skris * Redistribution and use in source and binary forms, with or without 2455714Skris * modification, are permitted provided that the following conditions 2555714Skris * are met: 2655714Skris * 1. Redistributions of source code must retain the copyright 2755714Skris * notice, this list of conditions and the following disclaimer. 2855714Skris * 2. Redistributions in binary form must reproduce the above copyright 2955714Skris * notice, this list of conditions and the following disclaimer in the 3055714Skris * documentation and/or other materials provided with the distribution. 3155714Skris * 3. All advertising materials mentioning features or use of this software 3255714Skris * must display the following acknowledgement: 3355714Skris * "This product includes cryptographic software written by 3455714Skris * Eric Young (eay@cryptsoft.com)" 3555714Skris * The word 'cryptographic' can be left out if the rouines from the library 3655714Skris * being used are not cryptographic related :-). 37280304Sjkim * 4. If you include any Windows specific code (or a derivative thereof) from 3855714Skris * the apps directory (application code) you must include an acknowledgement: 3955714Skris * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40280304Sjkim * 4155714Skris * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 4255714Skris * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 4355714Skris * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 4455714Skris * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 4555714Skris * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 4655714Skris * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 4755714Skris * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 4855714Skris * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 4955714Skris * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 5055714Skris * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 5155714Skris * SUCH DAMAGE. 52280304Sjkim * 5355714Skris * The licence and distribution terms for any publically available version or 5455714Skris * derivative of this code cannot be changed. i.e. this code cannot simply be 5555714Skris * copied and put under another distribution licence 5655714Skris * [including the GNU Public Licence.] 5755714Skris */ 5855714Skris 5955714Skris#include <stdio.h> 6055714Skris#include "cryptlib.h" 61109998Smarkm#include <openssl/asn1t.h> 6255714Skris#include <openssl/x509.h> 6355714Skris 64280304Sjkim/*- 65280304Sjkim * X509_REQ_INFO is handled in an unusual way to get round 66109998Smarkm * invalid encodings. Some broken certificate requests don't 67109998Smarkm * encode the attributes field if it is empty. This is in 68109998Smarkm * violation of PKCS#10 but we need to tolerate it. We do 69109998Smarkm * this by making the attributes field OPTIONAL then using 70280304Sjkim * the callback to initialise it to an empty STACK. 71109998Smarkm * 72109998Smarkm * This means that the field will be correctly encoded unless 73109998Smarkm * we NULL out the field. 74109998Smarkm * 75109998Smarkm * As a result we no longer need the req_kludge field because 76109998Smarkm * the information is now contained in the attributes field: 77109998Smarkm * 1. If it is NULL then it's the invalid omission. 78109998Smarkm * 2. If it is empty it is the correct encoding. 79109998Smarkm * 3. If it is not empty then some attributes are present. 80109998Smarkm * 81109998Smarkm */ 8255714Skris 83238405Sjkimstatic int rinf_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, 84280304Sjkim void *exarg) 85109998Smarkm{ 86280304Sjkim X509_REQ_INFO *rinf = (X509_REQ_INFO *)*pval; 8768651Skris 88280304Sjkim if (operation == ASN1_OP_NEW_POST) { 89280304Sjkim rinf->attributes = sk_X509_ATTRIBUTE_new_null(); 90280304Sjkim if (!rinf->attributes) 91280304Sjkim return 0; 92280304Sjkim } 93280304Sjkim return 1; 94109998Smarkm} 9555714Skris 96109998SmarkmASN1_SEQUENCE_enc(X509_REQ_INFO, enc, rinf_cb) = { 97280304Sjkim ASN1_SIMPLE(X509_REQ_INFO, version, ASN1_INTEGER), 98280304Sjkim ASN1_SIMPLE(X509_REQ_INFO, subject, X509_NAME), 99280304Sjkim ASN1_SIMPLE(X509_REQ_INFO, pubkey, X509_PUBKEY), 100280304Sjkim /* This isn't really OPTIONAL but it gets round invalid 101280304Sjkim * encodings 102280304Sjkim */ 103280304Sjkim ASN1_IMP_SET_OF_OPT(X509_REQ_INFO, attributes, X509_ATTRIBUTE, 0) 104109998Smarkm} ASN1_SEQUENCE_END_enc(X509_REQ_INFO, X509_REQ_INFO) 10555714Skris 106109998SmarkmIMPLEMENT_ASN1_FUNCTIONS(X509_REQ_INFO) 10755714Skris 108162911SsimonASN1_SEQUENCE_ref(X509_REQ, 0, CRYPTO_LOCK_X509_REQ) = { 109280304Sjkim ASN1_SIMPLE(X509_REQ, req_info, X509_REQ_INFO), 110280304Sjkim ASN1_SIMPLE(X509_REQ, sig_alg, X509_ALGOR), 111280304Sjkim ASN1_SIMPLE(X509_REQ, signature, ASN1_BIT_STRING) 112109998Smarkm} ASN1_SEQUENCE_END_ref(X509_REQ, X509_REQ) 11355714Skris 114109998SmarkmIMPLEMENT_ASN1_FUNCTIONS(X509_REQ) 115280304Sjkim 116109998SmarkmIMPLEMENT_ASN1_DUP_FUNCTION(X509_REQ) 117