[331] | 1 | /*
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| 2 | * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
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| 3 | *
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| 4 | * Licensed under the OpenSSL license (the "License"). You may not use
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| 5 | * this file except in compliance with the License. You can obtain a copy
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| 6 | * in the file LICENSE in the source distribution or at
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| 7 | * https://www.openssl.org/source/license.html
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| 8 | */
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| 9 |
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| 10 | #include <stdio.h>
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| 11 | #include "internal/cryptlib.h"
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| 12 | #include <openssl/bn.h>
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| 13 | #include <openssl/evp.h>
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| 14 | #include <openssl/asn1.h>
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| 15 | #include <openssl/asn1t.h>
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| 16 | #include <openssl/x509.h>
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| 17 | #include "internal/x509_int.h"
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| 18 | #include <openssl/objects.h>
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| 19 | #include <openssl/buffer.h>
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| 20 | #include <openssl/pem.h>
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| 21 |
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| 22 | X509_REQ *X509_to_X509_REQ(X509 *x, EVP_PKEY *pkey, const EVP_MD *md)
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| 23 | {
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| 24 | X509_REQ *ret;
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| 25 | X509_REQ_INFO *ri;
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| 26 | int i;
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| 27 | EVP_PKEY *pktmp;
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| 28 |
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| 29 | ret = X509_REQ_new();
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| 30 | if (ret == NULL) {
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| 31 | X509err(X509_F_X509_TO_X509_REQ, ERR_R_MALLOC_FAILURE);
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| 32 | goto err;
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| 33 | }
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| 34 |
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| 35 | ri = &ret->req_info;
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| 36 |
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| 37 | ri->version->length = 1;
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| 38 | ri->version->data = OPENSSL_malloc(1);
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| 39 | if (ri->version->data == NULL)
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| 40 | goto err;
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| 41 | ri->version->data[0] = 0; /* version == 0 */
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| 42 |
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| 43 | if (!X509_REQ_set_subject_name(ret, X509_get_subject_name(x)))
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| 44 | goto err;
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| 45 |
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| 46 | pktmp = X509_get0_pubkey(x);
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| 47 | if (pktmp == NULL)
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| 48 | goto err;
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| 49 | i = X509_REQ_set_pubkey(ret, pktmp);
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| 50 | if (!i)
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| 51 | goto err;
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| 52 |
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| 53 | if (pkey != NULL) {
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| 54 | if (!X509_REQ_sign(ret, pkey, md))
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| 55 | goto err;
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| 56 | }
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| 57 | return (ret);
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| 58 | err:
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| 59 | X509_REQ_free(ret);
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| 60 | return (NULL);
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| 61 | }
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| 62 |
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| 63 | EVP_PKEY *X509_REQ_get_pubkey(X509_REQ *req)
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| 64 | {
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| 65 | if (req == NULL)
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| 66 | return (NULL);
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| 67 | return (X509_PUBKEY_get(req->req_info.pubkey));
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| 68 | }
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| 69 |
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| 70 | EVP_PKEY *X509_REQ_get0_pubkey(X509_REQ *req)
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| 71 | {
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| 72 | if (req == NULL)
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| 73 | return NULL;
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| 74 | return (X509_PUBKEY_get0(req->req_info.pubkey));
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| 75 | }
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| 76 |
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| 77 | X509_PUBKEY *X509_REQ_get_X509_PUBKEY(X509_REQ *req)
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| 78 | {
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| 79 | return req->req_info.pubkey;
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| 80 | }
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| 81 |
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| 82 | int X509_REQ_check_private_key(X509_REQ *x, EVP_PKEY *k)
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| 83 | {
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| 84 | EVP_PKEY *xk = NULL;
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| 85 | int ok = 0;
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| 86 |
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| 87 | xk = X509_REQ_get_pubkey(x);
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| 88 | switch (EVP_PKEY_cmp(xk, k)) {
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| 89 | case 1:
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| 90 | ok = 1;
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| 91 | break;
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| 92 | case 0:
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| 93 | X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY,
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| 94 | X509_R_KEY_VALUES_MISMATCH);
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| 95 | break;
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| 96 | case -1:
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| 97 | X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY, X509_R_KEY_TYPE_MISMATCH);
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| 98 | break;
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| 99 | case -2:
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| 100 | #ifndef OPENSSL_NO_EC
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| 101 | if (EVP_PKEY_id(k) == EVP_PKEY_EC) {
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| 102 | X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY, ERR_R_EC_LIB);
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| 103 | break;
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| 104 | }
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| 105 | #endif
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| 106 | #ifndef OPENSSL_NO_DH
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| 107 | if (EVP_PKEY_id(k) == EVP_PKEY_DH) {
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| 108 | /* No idea */
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| 109 | X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY,
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| 110 | X509_R_CANT_CHECK_DH_KEY);
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| 111 | break;
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| 112 | }
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| 113 | #endif
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| 114 | X509err(X509_F_X509_REQ_CHECK_PRIVATE_KEY, X509_R_UNKNOWN_KEY_TYPE);
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| 115 | }
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| 116 |
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| 117 | EVP_PKEY_free(xk);
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| 118 | return (ok);
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| 119 | }
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| 120 |
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| 121 | /*
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| 122 | * It seems several organisations had the same idea of including a list of
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| 123 | * extensions in a certificate request. There are at least two OIDs that are
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| 124 | * used and there may be more: so the list is configurable.
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| 125 | */
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| 126 |
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| 127 | static int ext_nid_list[] = { NID_ext_req, NID_ms_ext_req, NID_undef };
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| 128 |
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| 129 | static int *ext_nids = ext_nid_list;
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| 130 |
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| 131 | int X509_REQ_extension_nid(int req_nid)
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| 132 | {
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| 133 | int i, nid;
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| 134 | for (i = 0;; i++) {
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| 135 | nid = ext_nids[i];
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| 136 | if (nid == NID_undef)
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| 137 | return 0;
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| 138 | else if (req_nid == nid)
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| 139 | return 1;
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| 140 | }
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| 141 | }
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| 142 |
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| 143 | int *X509_REQ_get_extension_nids(void)
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| 144 | {
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| 145 | return ext_nids;
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| 146 | }
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| 147 |
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| 148 | void X509_REQ_set_extension_nids(int *nids)
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| 149 | {
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| 150 | ext_nids = nids;
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| 151 | }
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| 152 |
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| 153 | STACK_OF(X509_EXTENSION) *X509_REQ_get_extensions(X509_REQ *req)
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| 154 | {
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| 155 | X509_ATTRIBUTE *attr;
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| 156 | ASN1_TYPE *ext = NULL;
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| 157 | int idx, *pnid;
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| 158 | const unsigned char *p;
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| 159 |
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| 160 | if ((req == NULL) || !ext_nids)
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| 161 | return (NULL);
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| 162 | for (pnid = ext_nids; *pnid != NID_undef; pnid++) {
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| 163 | idx = X509_REQ_get_attr_by_NID(req, *pnid, -1);
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| 164 | if (idx == -1)
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| 165 | continue;
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| 166 | attr = X509_REQ_get_attr(req, idx);
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| 167 | ext = X509_ATTRIBUTE_get0_type(attr, 0);
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| 168 | break;
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| 169 | }
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| 170 | if (!ext || (ext->type != V_ASN1_SEQUENCE))
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| 171 | return NULL;
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| 172 | p = ext->value.sequence->data;
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| 173 | return (STACK_OF(X509_EXTENSION) *)
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| 174 | ASN1_item_d2i(NULL, &p, ext->value.sequence->length,
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| 175 | ASN1_ITEM_rptr(X509_EXTENSIONS));
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| 176 | }
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| 177 |
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| 178 | /*
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| 179 | * Add a STACK_OF extensions to a certificate request: allow alternative OIDs
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| 180 | * in case we want to create a non standard one.
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| 181 | */
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| 182 |
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| 183 | int X509_REQ_add_extensions_nid(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts,
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| 184 | int nid)
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| 185 | {
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| 186 | int extlen;
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| 187 | int rv = 0;
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| 188 | unsigned char *ext = NULL;
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| 189 | /* Generate encoding of extensions */
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| 190 | extlen = ASN1_item_i2d((ASN1_VALUE *)exts, &ext,
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| 191 | ASN1_ITEM_rptr(X509_EXTENSIONS));
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| 192 | if (extlen <= 0)
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| 193 | return 0;
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| 194 | rv = X509_REQ_add1_attr_by_NID(req, nid, V_ASN1_SEQUENCE, ext, extlen);
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| 195 | OPENSSL_free(ext);
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| 196 | return rv;
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| 197 | }
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| 198 |
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| 199 | /* This is the normal usage: use the "official" OID */
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| 200 | int X509_REQ_add_extensions(X509_REQ *req, STACK_OF(X509_EXTENSION) *exts)
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| 201 | {
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| 202 | return X509_REQ_add_extensions_nid(req, exts, NID_ext_req);
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| 203 | }
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| 204 |
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| 205 | /* Request attribute functions */
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| 206 |
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| 207 | int X509_REQ_get_attr_count(const X509_REQ *req)
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| 208 | {
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| 209 | return X509at_get_attr_count(req->req_info.attributes);
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| 210 | }
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| 211 |
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| 212 | int X509_REQ_get_attr_by_NID(const X509_REQ *req, int nid, int lastpos)
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| 213 | {
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| 214 | return X509at_get_attr_by_NID(req->req_info.attributes, nid, lastpos);
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| 215 | }
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| 216 |
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| 217 | int X509_REQ_get_attr_by_OBJ(const X509_REQ *req, const ASN1_OBJECT *obj,
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| 218 | int lastpos)
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| 219 | {
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| 220 | return X509at_get_attr_by_OBJ(req->req_info.attributes, obj, lastpos);
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| 221 | }
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| 222 |
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| 223 | X509_ATTRIBUTE *X509_REQ_get_attr(const X509_REQ *req, int loc)
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| 224 | {
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| 225 | return X509at_get_attr(req->req_info.attributes, loc);
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| 226 | }
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| 227 |
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| 228 | X509_ATTRIBUTE *X509_REQ_delete_attr(X509_REQ *req, int loc)
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| 229 | {
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| 230 | return X509at_delete_attr(req->req_info.attributes, loc);
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| 231 | }
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| 232 |
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| 233 | int X509_REQ_add1_attr(X509_REQ *req, X509_ATTRIBUTE *attr)
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| 234 | {
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| 235 | if (X509at_add1_attr(&req->req_info.attributes, attr))
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| 236 | return 1;
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| 237 | return 0;
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| 238 | }
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| 239 |
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| 240 | int X509_REQ_add1_attr_by_OBJ(X509_REQ *req,
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| 241 | const ASN1_OBJECT *obj, int type,
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| 242 | const unsigned char *bytes, int len)
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| 243 | {
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| 244 | if (X509at_add1_attr_by_OBJ(&req->req_info.attributes, obj,
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| 245 | type, bytes, len))
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| 246 | return 1;
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| 247 | return 0;
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| 248 | }
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| 249 |
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| 250 | int X509_REQ_add1_attr_by_NID(X509_REQ *req,
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| 251 | int nid, int type,
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| 252 | const unsigned char *bytes, int len)
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| 253 | {
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| 254 | if (X509at_add1_attr_by_NID(&req->req_info.attributes, nid,
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| 255 | type, bytes, len))
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| 256 | return 1;
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| 257 | return 0;
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| 258 | }
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| 259 |
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| 260 | int X509_REQ_add1_attr_by_txt(X509_REQ *req,
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| 261 | const char *attrname, int type,
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| 262 | const unsigned char *bytes, int len)
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| 263 | {
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| 264 | if (X509at_add1_attr_by_txt(&req->req_info.attributes, attrname,
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| 265 | type, bytes, len))
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| 266 | return 1;
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| 267 | return 0;
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| 268 | }
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| 269 |
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| 270 | long X509_REQ_get_version(const X509_REQ *req)
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| 271 | {
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| 272 | return ASN1_INTEGER_get(req->req_info.version);
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| 273 | }
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| 274 |
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| 275 | X509_NAME *X509_REQ_get_subject_name(const X509_REQ *req)
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| 276 | {
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| 277 | return req->req_info.subject;
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| 278 | }
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| 279 |
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| 280 | void X509_REQ_get0_signature(const X509_REQ *req, const ASN1_BIT_STRING **psig,
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| 281 | const X509_ALGOR **palg)
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| 282 | {
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| 283 | if (psig != NULL)
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| 284 | *psig = req->signature;
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| 285 | if (palg != NULL)
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| 286 | *palg = &req->sig_alg;
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| 287 | }
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| 288 |
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| 289 | int X509_REQ_get_signature_nid(const X509_REQ *req)
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| 290 | {
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| 291 | return OBJ_obj2nid(req->sig_alg.algorithm);
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| 292 | }
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| 293 |
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| 294 | int i2d_re_X509_REQ_tbs(X509_REQ *req, unsigned char **pp)
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| 295 | {
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| 296 | req->req_info.enc.modified = 1;
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| 297 | return i2d_X509_REQ_INFO(&req->req_info, pp);
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| 298 | }
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