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openssl/crypto/x509/x509_req.c

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/*
* Copyright 1995-2022 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (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 <stdio.h>
#include "internal/cryptlib.h"
#include <openssl/bn.h>
#include <openssl/evp.h>
#include <openssl/asn1.h>
#include <openssl/asn1t.h>
#include <openssl/x509.h>
#include "crypto/x509.h"
#include <openssl/objects.h>
#include <openssl/buffer.h>
#include <openssl/pem.h>
X509_REQ *X509_to_X509_REQ(X509 *x, EVP_PKEY *pkey, const EVP_MD *md)
{
X509_REQ *ret;
X509_REQ_INFO *ri;
int i;
EVP_PKEY *pktmp;
ret = X509_REQ_new();
if (ret == NULL) {
X509err(X509_F_X509_TO_X509_REQ, ERR_R_MALLOC_FAILURE);
goto err;
}
ri = &ret->req_info;
ri->version->length = 1;
ri->version->data = OPENSSL_malloc(1);
if (ri->version->data == NULL)
goto err;
ri->version->data[0] = 0; /* version == 0 */
if (!X509_REQ_set_subject_name(ret, X509_get_subject_name(x)))
goto err;
pktmp = X509_get0_pubkey(x);
if (pktmp == NULL)
goto err;
i = X509_REQ_set_pubkey(ret, pktmp);
if (!i)
goto err;
if (pkey != NULL) {
if (!X509_REQ_sign(ret, pkey, md))
goto err;
}
return ret;
err:
X509_REQ_free(ret);
return NULL;
}
EVP_PKEY *X509_REQ_get_pubkey(X509_REQ *req)
{
if (req == NULL)
return NULL;
return X509_PUBKEY_get(req->req_info.pubkey);
}
EVP_PKEY *X509_REQ_get0_pubkey(X509_REQ *req)
{
if (req == NULL)
return NULL;
return X509_PUBKEY_get0(req->req_info.pubkey);
}
X509_PUBKEY *X509_REQ_get_X509_PUBKEY(X509_REQ *req)
{
return req->req_info.pubkey;
}
int X509_REQ_check_private_key(X509_REQ *x, EVP_PKEY *k)
{
EVP_PKEY *xk = NULL;
int ok = 0;
xk = X509_REQ_get_pubkey(x);
switch (EVP_PKEY_cmp(xk, k)) {
case 1:
ok = 1;
break;
case 0:
X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY,
X509_R_KEY_VALUES_MISMATCH);
break;
case -1:
X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY, X509_R_KEY_TYPE_MISMATCH);
break;
case -2:
#ifndef OPENSSL_NO_EC
if (EVP_PKEY_id(k) == EVP_PKEY_EC) {
X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY, ERR_R_EC_LIB);
break;
}
#endif
#ifndef OPENSSL_NO_DH
if (EVP_PKEY_id(k) == EVP_PKEY_DH) {
/* No idea */
X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY,
X509_R_CANT_CHECK_DH_KEY);
break;
}
#endif
X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY, X509_R_UNKNOWN_KEY_TYPE);
}
EVP_PKEY_free(xk);
return ok;
}
/*
* It seems several organisations had the same idea of including a list of
* extensions in a certificate request. There are at least two OIDs that are
* used and there may be more: so the list is configurable.
*/
static int ext_nid_list[] = { NID_ext_req, NID_ms_ext_req, NID_undef };
static int *ext_nids = ext_nid_list;
int X509_REQ_extension_nid(int req_nid)
{
int i, nid;
for (i = 0;; i++) {
nid = ext_nids[i];
if (nid == NID_undef)
return 0;
else if (req_nid == nid)
return 1;
}
}
int *X509_REQ_get_extension_nids(void)
{
return ext_nids;
}
void X509_REQ_set_extension_nids(int *nids)
{
ext_nids = nids;
}
STACK_OF(X509_EXTENSION) *X509_REQ_get_extensions(X509_REQ *req)
{
X509_ATTRIBUTE *attr;
ASN1_TYPE *ext = NULL;
int idx, *pnid;
const unsigned char *p;
if ((req == NULL) || !ext_nids)
return NULL;
for (pnid = ext_nids; *pnid != NID_undef; pnid++) {
idx = X509_REQ_get_attr_by_NID(req, *pnid, -1);
if (idx == -1)
continue;
attr = X509_REQ_get_attr(req, idx);
ext = X509_ATTRIBUTE_get0_type(attr, 0);
break;
}
if (ext == NULL) /* no extensions is not an error */
return sk_X509_EXTENSION_new_null();
if (ext->type != V_ASN1_SEQUENCE)
return NULL;
p = ext->value.sequence->data;
return (STACK_OF(X509_EXTENSION) *)
ASN1_item_d2i(NULL, &p, ext->value.sequence->length,
ASN1_ITEM_rptr(X509_EXTENSIONS));
}
/*
* Add a STACK_OF extensions to a certificate request: allow alternative OIDs
* in case we want to create a non standard one.
*/
int X509_REQ_add_extensions_nid(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts,
int nid)
{
int extlen;
int rv = 0;
unsigned char *ext = NULL;
/* Generate encoding of extensions */
extlen = ASN1_item_i2d((ASN1_VALUE *)exts, &ext,
ASN1_ITEM_rptr(X509_EXTENSIONS));
if (extlen <= 0)
return 0;
rv = X509_REQ_add1_attr_by_NID(req, nid, V_ASN1_SEQUENCE, ext, extlen);
OPENSSL_free(ext);
return rv;
}
/* This is the normal usage: use the "official" OID */
int X509_REQ_add_extensions(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts)
{
return X509_REQ_add_extensions_nid(req, exts, NID_ext_req);
}
/* Request attribute functions */
int X509_REQ_get_attr_count(const X509_REQ *req)
{
return X509at_get_attr_count(req->req_info.attributes);
}
int X509_REQ_get_attr_by_NID(const X509_REQ *req, int nid, int lastpos)
{
return X509at_get_attr_by_NID(req->req_info.attributes, nid, lastpos);
}
int X509_REQ_get_attr_by_OBJ(const X509_REQ *req, const ASN1_OBJECT *obj,
int lastpos)
{
return X509at_get_attr_by_OBJ(req->req_info.attributes, obj, lastpos);
}
X509_ATTRIBUTE *X509_REQ_get_attr(const X509_REQ *req, int loc)
{
return X509at_get_attr(req->req_info.attributes, loc);
}
X509_ATTRIBUTE *X509_REQ_delete_attr(X509_REQ *req, int loc)
{
X509_ATTRIBUTE *attr = X509at_delete_attr(req->req_info.attributes, loc);
if (attr != NULL)
req->req_info.enc.modified = 1;
return attr;
}
int X509_REQ_add1_attr(X509_REQ *req, X509_ATTRIBUTE *attr)
{
if (!X509at_add1_attr(&req->req_info.attributes, attr))
return 0;
req->req_info.enc.modified = 1;
return 1;
}
int X509_REQ_add1_attr_by_OBJ(X509_REQ *req,
const ASN1_OBJECT *obj, int type,
const unsigned char *bytes, int len)
{
if (!X509at_add1_attr_by_OBJ(&req->req_info.attributes, obj,
type, bytes, len))
return 0;
req->req_info.enc.modified = 1;
return 1;
}
int X509_REQ_add1_attr_by_NID(X509_REQ *req,
int nid, int type,
const unsigned char *bytes, int len)
{
if (!X509at_add1_attr_by_NID(&req->req_info.attributes, nid,
type, bytes, len))
return 0;
req->req_info.enc.modified = 1;
return 1;
}
int X509_REQ_add1_attr_by_txt(X509_REQ *req,
const char *attrname, int type,
const unsigned char *bytes, int len)
{
if (!X509at_add1_attr_by_txt(&req->req_info.attributes, attrname,
type, bytes, len))
return 0;
req->req_info.enc.modified = 1;
return 1;
}
long X509_REQ_get_version(const X509_REQ *req)
{
return ASN1_INTEGER_get(req->req_info.version);
}
X509_NAME *X509_REQ_get_subject_name(const X509_REQ *req)
{
return req->req_info.subject;
}
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;
}
void X509_REQ_set0_signature(X509_REQ *req, ASN1_BIT_STRING *psig)
{
if (req->signature)
ASN1_BIT_STRING_free(req->signature);
req->signature = psig;
}
int X509_REQ_set1_signature_algo(X509_REQ *req, X509_ALGOR *palg)
{
return X509_ALGOR_copy(&req->sig_alg, palg);
}
int X509_REQ_get_signature_nid(const X509_REQ *req)
{
return OBJ_obj2nid(req->sig_alg.algorithm);
}
int i2d_re_X509_REQ_tbs(X509_REQ *req, unsigned char **pp)
{
req->req_info.enc.modified = 1;
return i2d_X509_REQ_INFO(&req->req_info, pp);
}
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