/* * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved. * * Licensed under the Apache License 2.0 (the "License"). You may not use * this file except in compliance with the License. You can obtain a copy * in the file LICENSE in the source distribution or at * https://www.openssl.org/source/license.html */ #include #include "internal/cryptlib.h" #include #include #include "crypto/x509.h" /*- * X509_REQ_INFO is handled in an unusual way to get round * invalid encodings. Some broken certificate requests don't * encode the attributes field if it is empty. This is in * violation of PKCS#10 but we need to tolerate it. We do * this by making the attributes field OPTIONAL then using * the callback to initialise it to an empty STACK. * * This means that the field will be correctly encoded unless * we NULL out the field. * * As a result we no longer need the req_kludge field because * the information is now contained in the attributes field: * 1. If it is NULL then it's the invalid omission. * 2. If it is empty it is the correct encoding. * 3. If it is not empty then some attributes are present. * */ static int rinf_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, void *exarg) { X509_REQ_INFO *rinf = (X509_REQ_INFO *)*pval; if (operation == ASN1_OP_NEW_POST) { rinf->attributes = sk_X509_ATTRIBUTE_new_null(); if (!rinf->attributes) return 0; } return 1; } static int req_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, void *exarg) { #ifndef OPENSSL_NO_SM2 X509_REQ *ret = (X509_REQ *)*pval; switch (operation) { case ASN1_OP_D2I_PRE: ASN1_OCTET_STRING_free(ret->sm2_id); /* fall thru */ case ASN1_OP_NEW_POST: ret->sm2_id = NULL; break; case ASN1_OP_FREE_POST: ASN1_OCTET_STRING_free(ret->sm2_id); break; } #endif return 1; } ASN1_SEQUENCE_enc(X509_REQ_INFO, enc, rinf_cb) = { ASN1_SIMPLE(X509_REQ_INFO, version, ASN1_INTEGER), ASN1_SIMPLE(X509_REQ_INFO, subject, X509_NAME), ASN1_SIMPLE(X509_REQ_INFO, pubkey, X509_PUBKEY), /* This isn't really OPTIONAL but it gets round invalid * encodings */ ASN1_IMP_SET_OF_OPT(X509_REQ_INFO, attributes, X509_ATTRIBUTE, 0) } ASN1_SEQUENCE_END_enc(X509_REQ_INFO, X509_REQ_INFO) IMPLEMENT_ASN1_FUNCTIONS(X509_REQ_INFO) ASN1_SEQUENCE_ref(X509_REQ, req_cb) = { ASN1_EMBED(X509_REQ, req_info, X509_REQ_INFO), ASN1_EMBED(X509_REQ, sig_alg, X509_ALGOR), ASN1_SIMPLE(X509_REQ, signature, ASN1_BIT_STRING) } ASN1_SEQUENCE_END_ref(X509_REQ, X509_REQ) IMPLEMENT_ASN1_FUNCTIONS(X509_REQ) IMPLEMENT_ASN1_DUP_FUNCTION(X509_REQ) #ifndef OPENSSL_NO_SM2 void X509_REQ_set0_sm2_id(X509_REQ *x, ASN1_OCTET_STRING *sm2_id) { ASN1_OCTET_STRING_free(x->sm2_id); x->sm2_id = sm2_id; } ASN1_OCTET_STRING *X509_REQ_get0_sm2_id(X509_REQ *x) { return x->sm2_id; } #endif