/* $OpenBSD: x_req.c,v 1.23 2024/07/08 14:48:49 beck Exp $ */ /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) * All rights reserved. * * This package is an SSL implementation written * by Eric Young (eay@cryptsoft.com). * The implementation was written so as to conform with Netscapes SSL. * * This library is free for commercial and non-commercial use as long as * the following conditions are aheared to. The following conditions * apply to all code found in this distribution, be it the RC4, RSA, * lhash, DES, etc., code; not just the SSL code. The SSL documentation * included with this distribution is covered by the same copyright terms * except that the holder is Tim Hudson (tjh@cryptsoft.com). * * Copyright remains Eric Young's, and as such any Copyright notices in * the code are not to be removed. * If this package is used in a product, Eric Young should be given attribution * as the author of the parts of the library used. * This can be in the form of a textual message at program startup or * in documentation (online or textual) provided with the package. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * "This product includes cryptographic software written by * Eric Young (eay@cryptsoft.com)" * The word 'cryptographic' can be left out if the rouines from the library * being used are not cryptographic related :-). * 4. If you include any Windows specific code (or a derivative thereof) from * the apps directory (application code) you must include an acknowledgement: * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" * * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * The licence and distribution terms for any publically available version or * derivative of this code cannot be changed. i.e. this code cannot simply be * copied and put under another distribution licence * [including the GNU Public Licence.] */ #include <stdio.h> #include <openssl/asn1t.h> #include <openssl/x509.h> #include "x509_local.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 const ASN1_AUX X509_REQ_INFO_aux = { .flags = ASN1_AFLG_ENCODING, .asn1_cb = rinf_cb, .enc_offset = offsetof(X509_REQ_INFO, enc), }; static const ASN1_TEMPLATE X509_REQ_INFO_seq_tt[] = { { .offset = offsetof(X509_REQ_INFO, version), .field_name = "version", .item = &ASN1_INTEGER_it, }, { .offset = offsetof(X509_REQ_INFO, subject), .field_name = "subject", .item = &X509_NAME_it, }, { .offset = offsetof(X509_REQ_INFO, pubkey), .field_name = "pubkey", .item = &X509_PUBKEY_it, }, /* This isn't really OPTIONAL but it gets round invalid * encodings */ { .flags = ASN1_TFLG_IMPLICIT | ASN1_TFLG_SET_OF | ASN1_TFLG_OPTIONAL, .offset = offsetof(X509_REQ_INFO, attributes), .field_name = "attributes", .item = &X509_ATTRIBUTE_it, }, }; const ASN1_ITEM X509_REQ_INFO_it = { .itype = ASN1_ITYPE_SEQUENCE, .utype = V_ASN1_SEQUENCE, .templates = X509_REQ_INFO_seq_tt, .tcount = sizeof(X509_REQ_INFO_seq_tt) / sizeof(ASN1_TEMPLATE), .funcs = &X509_REQ_INFO_aux, .size = sizeof(X509_REQ_INFO), .sname = "X509_REQ_INFO", }; LCRYPTO_ALIAS(X509_REQ_INFO_it); X509_REQ_INFO * d2i_X509_REQ_INFO(X509_REQ_INFO **a, const unsigned char **in, long len) { return (X509_REQ_INFO *)ASN1_item_d2i((ASN1_VALUE **)a, in, len, &X509_REQ_INFO_it); } LCRYPTO_ALIAS(d2i_X509_REQ_INFO); int i2d_X509_REQ_INFO(X509_REQ_INFO *a, unsigned char **out) { return ASN1_item_i2d((ASN1_VALUE *)a, out, &X509_REQ_INFO_it); } LCRYPTO_ALIAS(i2d_X509_REQ_INFO); X509_REQ_INFO * X509_REQ_INFO_new(void) { return (X509_REQ_INFO *)ASN1_item_new(&X509_REQ_INFO_it); } LCRYPTO_ALIAS(X509_REQ_INFO_new); void X509_REQ_INFO_free(X509_REQ_INFO *a) { ASN1_item_free((ASN1_VALUE *)a, &X509_REQ_INFO_it); } LCRYPTO_ALIAS(X509_REQ_INFO_free); static const ASN1_AUX X509_REQ_aux = { .app_data = NULL, .flags = ASN1_AFLG_REFCOUNT, .ref_offset = offsetof(X509_REQ, references), .ref_lock = CRYPTO_LOCK_X509_REQ, }; static const ASN1_TEMPLATE X509_REQ_seq_tt[] = { { .offset = offsetof(X509_REQ, req_info), .field_name = "req_info", .item = &X509_REQ_INFO_it, }, { .offset = offsetof(X509_REQ, sig_alg), .field_name = "sig_alg", .item = &X509_ALGOR_it, }, { .offset = offsetof(X509_REQ, signature), .field_name = "signature", .item = &ASN1_BIT_STRING_it, }, }; const ASN1_ITEM X509_REQ_it = { .itype = ASN1_ITYPE_SEQUENCE, .utype = V_ASN1_SEQUENCE, .templates = X509_REQ_seq_tt, .tcount = sizeof(X509_REQ_seq_tt) / sizeof(ASN1_TEMPLATE), .funcs = &X509_REQ_aux, .size = sizeof(X509_REQ), .sname = "X509_REQ", }; LCRYPTO_ALIAS(X509_REQ_it); X509_REQ * d2i_X509_REQ(X509_REQ **a, const unsigned char **in, long len) { return (X509_REQ *)ASN1_item_d2i((ASN1_VALUE **)a, in, len, &X509_REQ_it); } LCRYPTO_ALIAS(d2i_X509_REQ); int i2d_X509_REQ(X509_REQ *a, unsigned char **out) { return ASN1_item_i2d((ASN1_VALUE *)a, out, &X509_REQ_it); } LCRYPTO_ALIAS(i2d_X509_REQ); X509_REQ * X509_REQ_new(void) { return (X509_REQ *)ASN1_item_new(&X509_REQ_it); } LCRYPTO_ALIAS(X509_REQ_new); void X509_REQ_free(X509_REQ *a) { ASN1_item_free((ASN1_VALUE *)a, &X509_REQ_it); } LCRYPTO_ALIAS(X509_REQ_free); X509_REQ * X509_REQ_dup(X509_REQ *x) { return ASN1_item_dup(&X509_REQ_it, x); } LCRYPTO_ALIAS(X509_REQ_dup); int X509_REQ_get_signature_nid(const X509_REQ *req) { return OBJ_obj2nid(req->sig_alg->algorithm); } LCRYPTO_ALIAS(X509_REQ_get_signature_nid); void X509_REQ_get0_signature(const X509_REQ *req, const ASN1_BIT_STRING **psig, const X509_ALGOR **palg) { if (psig != NULL) *psig = req->signature; if (palg != NULL) *palg = req->sig_alg; } LCRYPTO_ALIAS(X509_REQ_get0_signature);
