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Imported Upstream version 4.8.0.309
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290
external/boringssl/crypto/x509/x_x509.c
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external/boringssl/crypto/x509/x_x509.c
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/* crypto/asn1/x_x509.c */
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/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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* All rights reserved.
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*
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* This package is an SSL implementation written
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* by Eric Young (eay@cryptsoft.com).
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* The implementation was written so as to conform with Netscapes SSL.
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*
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* This library is free for commercial and non-commercial use as long as
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* the following conditions are aheared to. The following conditions
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* apply to all code found in this distribution, be it the RC4, RSA,
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* lhash, DES, etc., code; not just the SSL code. The SSL documentation
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* included with this distribution is covered by the same copyright terms
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* except that the holder is Tim Hudson (tjh@cryptsoft.com).
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*
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* Copyright remains Eric Young's, and as such any Copyright notices in
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* the code are not to be removed.
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* If this package is used in a product, Eric Young should be given attribution
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* as the author of the parts of the library used.
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* This can be in the form of a textual message at program startup or
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* in documentation (online or textual) provided with the package.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* "This product includes cryptographic software written by
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* Eric Young (eay@cryptsoft.com)"
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* The word 'cryptographic' can be left out if the rouines from the library
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* being used are not cryptographic related :-).
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* 4. If you include any Windows specific code (or a derivative thereof) from
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* the apps directory (application code) you must include an acknowledgement:
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* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
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*
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* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* The licence and distribution terms for any publically available version or
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* derivative of this code cannot be changed. i.e. this code cannot simply be
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* copied and put under another distribution licence
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* [including the GNU Public Licence.] */
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#include <assert.h>
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#include <stdio.h>
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#include <openssl/asn1t.h>
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#include <openssl/evp.h>
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#include <openssl/mem.h>
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#include <openssl/obj.h>
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#include <openssl/thread.h>
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#include <openssl/x509.h>
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#include <openssl/x509v3.h>
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#include "../internal.h"
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static CRYPTO_EX_DATA_CLASS g_ex_data_class = CRYPTO_EX_DATA_CLASS_INIT;
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ASN1_SEQUENCE_enc(X509_CINF, enc, 0) = {
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ASN1_EXP_OPT(X509_CINF, version, ASN1_INTEGER, 0),
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ASN1_SIMPLE(X509_CINF, serialNumber, ASN1_INTEGER),
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ASN1_SIMPLE(X509_CINF, signature, X509_ALGOR),
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ASN1_SIMPLE(X509_CINF, issuer, X509_NAME),
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ASN1_SIMPLE(X509_CINF, validity, X509_VAL),
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ASN1_SIMPLE(X509_CINF, subject, X509_NAME),
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ASN1_SIMPLE(X509_CINF, key, X509_PUBKEY),
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ASN1_IMP_OPT(X509_CINF, issuerUID, ASN1_BIT_STRING, 1),
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ASN1_IMP_OPT(X509_CINF, subjectUID, ASN1_BIT_STRING, 2),
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ASN1_EXP_SEQUENCE_OF_OPT(X509_CINF, extensions, X509_EXTENSION, 3)
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} ASN1_SEQUENCE_END_enc(X509_CINF, X509_CINF)
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IMPLEMENT_ASN1_FUNCTIONS(X509_CINF)
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/* X509 top level structure needs a bit of customisation */
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extern void policy_cache_free(X509_POLICY_CACHE *cache);
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static int x509_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
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void *exarg)
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{
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X509 *ret = (X509 *)*pval;
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switch (operation) {
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case ASN1_OP_NEW_POST:
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ret->valid = 0;
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ret->name = NULL;
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ret->ex_flags = 0;
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ret->ex_pathlen = -1;
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ret->skid = NULL;
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ret->akid = NULL;
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ret->aux = NULL;
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ret->crldp = NULL;
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CRYPTO_new_ex_data(&ret->ex_data);
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break;
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case ASN1_OP_D2I_POST:
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if (ret->name != NULL)
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OPENSSL_free(ret->name);
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ret->name = X509_NAME_oneline(ret->cert_info->subject, NULL, 0);
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break;
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case ASN1_OP_FREE_POST:
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CRYPTO_free_ex_data(&g_ex_data_class, ret, &ret->ex_data);
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X509_CERT_AUX_free(ret->aux);
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ASN1_OCTET_STRING_free(ret->skid);
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AUTHORITY_KEYID_free(ret->akid);
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CRL_DIST_POINTS_free(ret->crldp);
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policy_cache_free(ret->policy_cache);
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GENERAL_NAMES_free(ret->altname);
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NAME_CONSTRAINTS_free(ret->nc);
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if (ret->name != NULL)
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OPENSSL_free(ret->name);
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break;
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}
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return 1;
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}
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ASN1_SEQUENCE_ref(X509, x509_cb) = {
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ASN1_SIMPLE(X509, cert_info, X509_CINF),
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ASN1_SIMPLE(X509, sig_alg, X509_ALGOR),
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ASN1_SIMPLE(X509, signature, ASN1_BIT_STRING)
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} ASN1_SEQUENCE_END_ref(X509, X509)
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IMPLEMENT_ASN1_FUNCTIONS(X509)
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IMPLEMENT_ASN1_DUP_FUNCTION(X509)
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X509 *X509_up_ref(X509 *x)
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{
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CRYPTO_refcount_inc(&x->references);
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return x;
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}
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int X509_get_ex_new_index(long argl, void *argp, CRYPTO_EX_unused * unused,
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CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
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{
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int index;
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if (!CRYPTO_get_ex_new_index(&g_ex_data_class, &index, argl, argp,
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dup_func, free_func)) {
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return -1;
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}
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return index;
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}
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int X509_set_ex_data(X509 *r, int idx, void *arg)
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{
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return (CRYPTO_set_ex_data(&r->ex_data, idx, arg));
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}
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void *X509_get_ex_data(X509 *r, int idx)
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{
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return (CRYPTO_get_ex_data(&r->ex_data, idx));
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}
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/*
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* X509_AUX ASN1 routines. X509_AUX is the name given to a certificate with
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* extra info tagged on the end. Since these functions set how a certificate
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* is trusted they should only be used when the certificate comes from a
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* reliable source such as local storage.
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*/
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X509 *d2i_X509_AUX(X509 **a, const unsigned char **pp, long length)
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{
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const unsigned char *q = *pp;
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X509 *ret;
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int freeret = 0;
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if (!a || *a == NULL)
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freeret = 1;
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ret = d2i_X509(a, &q, length);
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/* If certificate unreadable then forget it */
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if (!ret)
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return NULL;
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/* update length */
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length -= q - *pp;
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/* Parse auxiliary information if there is any. */
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if (length > 0 && !d2i_X509_CERT_AUX(&ret->aux, &q, length))
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goto err;
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*pp = q;
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return ret;
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err:
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if (freeret) {
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X509_free(ret);
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if (a)
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*a = NULL;
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}
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return NULL;
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}
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/*
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* Serialize trusted certificate to *pp or just return the required buffer
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* length if pp == NULL. We ultimately want to avoid modifying *pp in the
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* error path, but that depends on similar hygiene in lower-level functions.
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* Here we avoid compounding the problem.
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*/
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static int i2d_x509_aux_internal(X509 *a, unsigned char **pp)
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{
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int length, tmplen;
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unsigned char *start = pp != NULL ? *pp : NULL;
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assert(pp == NULL || *pp != NULL);
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/*
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* This might perturb *pp on error, but fixing that belongs in i2d_X509()
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* not here. It should be that if a == NULL length is zero, but we check
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* both just in case.
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*/
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length = i2d_X509(a, pp);
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if (length <= 0 || a == NULL) {
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return length;
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}
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tmplen = i2d_X509_CERT_AUX(a->aux, pp);
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if (tmplen < 0) {
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if (start != NULL)
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*pp = start;
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return tmplen;
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}
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length += tmplen;
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return length;
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}
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/*
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* Serialize trusted certificate to *pp, or just return the required buffer
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* length if pp == NULL.
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*
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* When pp is not NULL, but *pp == NULL, we allocate the buffer, but since
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* we're writing two ASN.1 objects back to back, we can't have i2d_X509() do
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* the allocation, nor can we allow i2d_X509_CERT_AUX() to increment the
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* allocated buffer.
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*/
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int i2d_X509_AUX(X509 *a, unsigned char **pp)
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{
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int length;
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unsigned char *tmp;
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/* Buffer provided by caller */
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if (pp == NULL || *pp != NULL)
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return i2d_x509_aux_internal(a, pp);
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/* Obtain the combined length */
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if ((length = i2d_x509_aux_internal(a, NULL)) <= 0)
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return length;
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/* Allocate requisite combined storage */
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*pp = tmp = OPENSSL_malloc(length);
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if (tmp == NULL)
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return -1; /* Push error onto error stack? */
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/* Encode, but keep *pp at the originally malloced pointer */
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length = i2d_x509_aux_internal(a, &tmp);
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if (length <= 0) {
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OPENSSL_free(*pp);
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*pp = NULL;
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}
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return length;
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}
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void X509_get0_signature(ASN1_BIT_STRING **psig, X509_ALGOR **palg,
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const X509 *x)
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{
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if (psig)
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*psig = x->signature;
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if (palg)
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*palg = x->sig_alg;
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}
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int X509_get_signature_nid(const X509 *x)
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{
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return OBJ_obj2nid(x->sig_alg->algorithm);
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}
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