--- /dev/null
+/* crypto/asn1/x_x509.c */
+/* 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 <assert.h>
+#include <limits.h>
+#include <stdio.h>
+
+#include <openssl/asn1t.h>
+#include <openssl/evp.h>
+#include <openssl/mem.h>
+#include <openssl/obj.h>
+#include <openssl/pool.h>
+#include <openssl/thread.h>
+#include <openssl/x509.h>
+#include <openssl/x509v3.h>
+
+#include "../internal.h"
+
+static CRYPTO_EX_DATA_CLASS g_ex_data_class = CRYPTO_EX_DATA_CLASS_INIT;
+
+ASN1_SEQUENCE_enc(X509_CINF, enc, 0) = {
+ ASN1_EXP_OPT(X509_CINF, version, ASN1_INTEGER, 0),
+ ASN1_SIMPLE(X509_CINF, serialNumber, ASN1_INTEGER),
+ ASN1_SIMPLE(X509_CINF, signature, X509_ALGOR),
+ ASN1_SIMPLE(X509_CINF, issuer, X509_NAME),
+ ASN1_SIMPLE(X509_CINF, validity, X509_VAL),
+ ASN1_SIMPLE(X509_CINF, subject, X509_NAME),
+ ASN1_SIMPLE(X509_CINF, key, X509_PUBKEY),
+ ASN1_IMP_OPT(X509_CINF, issuerUID, ASN1_BIT_STRING, 1),
+ ASN1_IMP_OPT(X509_CINF, subjectUID, ASN1_BIT_STRING, 2),
+ ASN1_EXP_SEQUENCE_OF_OPT(X509_CINF, extensions, X509_EXTENSION, 3)
+} ASN1_SEQUENCE_END_enc(X509_CINF, X509_CINF)
+
+IMPLEMENT_ASN1_FUNCTIONS(X509_CINF)
+/* X509 top level structure needs a bit of customisation */
+
+extern void policy_cache_free(X509_POLICY_CACHE *cache);
+
+static int x509_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
+ void *exarg)
+{
+ X509 *ret = (X509 *)*pval;
+
+ switch (operation) {
+
+ case ASN1_OP_NEW_POST:
+ ret->name = NULL;
+ ret->ex_flags = 0;
+ ret->ex_pathlen = -1;
+ ret->skid = NULL;
+ ret->akid = NULL;
+ ret->aux = NULL;
+ ret->crldp = NULL;
+ ret->buf = NULL;
+ CRYPTO_new_ex_data(&ret->ex_data);
+ CRYPTO_MUTEX_init(&ret->lock);
+ break;
+
+ case ASN1_OP_D2I_PRE:
+ CRYPTO_BUFFER_free(ret->buf);
+ ret->buf = NULL;
+ break;
+
+ case ASN1_OP_D2I_POST:
+ if (ret->name != NULL)
+ OPENSSL_free(ret->name);
+ ret->name = X509_NAME_oneline(ret->cert_info->subject, NULL, 0);
+ break;
+
+ case ASN1_OP_FREE_POST:
+ CRYPTO_MUTEX_cleanup(&ret->lock);
+ CRYPTO_free_ex_data(&g_ex_data_class, ret, &ret->ex_data);
+ X509_CERT_AUX_free(ret->aux);
+ ASN1_OCTET_STRING_free(ret->skid);
+ AUTHORITY_KEYID_free(ret->akid);
+ CRL_DIST_POINTS_free(ret->crldp);
+ policy_cache_free(ret->policy_cache);
+ GENERAL_NAMES_free(ret->altname);
+ NAME_CONSTRAINTS_free(ret->nc);
+ CRYPTO_BUFFER_free(ret->buf);
+ OPENSSL_free(ret->name);
+ break;
+
+ }
+
+ return 1;
+
+}
+
+ASN1_SEQUENCE_ref(X509, x509_cb) = {
+ ASN1_SIMPLE(X509, cert_info, X509_CINF),
+ ASN1_SIMPLE(X509, sig_alg, X509_ALGOR),
+ ASN1_SIMPLE(X509, signature, ASN1_BIT_STRING)
+} ASN1_SEQUENCE_END_ref(X509, X509)
+
+IMPLEMENT_ASN1_FUNCTIONS(X509)
+
+IMPLEMENT_ASN1_DUP_FUNCTION(X509)
+
+X509 *X509_parse_from_buffer(CRYPTO_BUFFER *buf) {
+ if (CRYPTO_BUFFER_len(buf) > LONG_MAX) {
+ OPENSSL_PUT_ERROR(SSL, ERR_R_OVERFLOW);
+ return 0;
+ }
+
+ X509 *x509 = X509_new();
+ if (x509 == NULL) {
+ return NULL;
+ }
+
+ x509->cert_info->enc.alias_only_on_next_parse = 1;
+
+ const uint8_t *inp = CRYPTO_BUFFER_data(buf);
+ X509 *x509p = x509;
+ X509 *ret = d2i_X509(&x509p, &inp, CRYPTO_BUFFER_len(buf));
+ if (ret == NULL ||
+ inp - CRYPTO_BUFFER_data(buf) != (ptrdiff_t)CRYPTO_BUFFER_len(buf)) {
+ X509_free(x509p);
+ return NULL;
+ }
+ assert(x509p == x509);
+ assert(ret == x509);
+
+ CRYPTO_BUFFER_up_ref(buf);
+ ret->buf = buf;
+
+ return ret;
+}
+
+int X509_up_ref(X509 *x)
+{
+ CRYPTO_refcount_inc(&x->references);
+ return 1;
+}
+
+int X509_get_ex_new_index(long argl, void *argp, CRYPTO_EX_unused * unused,
+ CRYPTO_EX_dup *dup_unused, CRYPTO_EX_free *free_func)
+{
+ int index;
+ if (!CRYPTO_get_ex_new_index(&g_ex_data_class, &index, argl, argp,
+ free_func)) {
+ return -1;
+ }
+ return index;
+}
+
+int X509_set_ex_data(X509 *r, int idx, void *arg)
+{
+ return (CRYPTO_set_ex_data(&r->ex_data, idx, arg));
+}
+
+void *X509_get_ex_data(X509 *r, int idx)
+{
+ return (CRYPTO_get_ex_data(&r->ex_data, idx));
+}
+
+/*
+ * X509_AUX ASN1 routines. X509_AUX is the name given to a certificate with
+ * extra info tagged on the end. Since these functions set how a certificate
+ * is trusted they should only be used when the certificate comes from a
+ * reliable source such as local storage.
+ */
+
+X509 *d2i_X509_AUX(X509 **a, const unsigned char **pp, long length)
+{
+ const unsigned char *q = *pp;
+ X509 *ret;
+ int freeret = 0;
+
+ if (!a || *a == NULL)
+ freeret = 1;
+ ret = d2i_X509(a, &q, length);
+ /* If certificate unreadable then forget it */
+ if (!ret)
+ return NULL;
+ /* update length */
+ length -= q - *pp;
+ /* Parse auxiliary information if there is any. */
+ if (length > 0 && !d2i_X509_CERT_AUX(&ret->aux, &q, length))
+ goto err;
+ *pp = q;
+ return ret;
+ err:
+ if (freeret) {
+ X509_free(ret);
+ if (a)
+ *a = NULL;
+ }
+ return NULL;
+}
+
+/*
+ * Serialize trusted certificate to *pp or just return the required buffer
+ * length if pp == NULL. We ultimately want to avoid modifying *pp in the
+ * error path, but that depends on similar hygiene in lower-level functions.
+ * Here we avoid compounding the problem.
+ */
+static int i2d_x509_aux_internal(X509 *a, unsigned char **pp)
+{
+ int length, tmplen;
+ unsigned char *start = pp != NULL ? *pp : NULL;
+
+ assert(pp == NULL || *pp != NULL);
+
+ /*
+ * This might perturb *pp on error, but fixing that belongs in i2d_X509()
+ * not here. It should be that if a == NULL length is zero, but we check
+ * both just in case.
+ */
+ length = i2d_X509(a, pp);
+ if (length <= 0 || a == NULL) {
+ return length;
+ }
+
+ tmplen = i2d_X509_CERT_AUX(a->aux, pp);
+ if (tmplen < 0) {
+ if (start != NULL)
+ *pp = start;
+ return tmplen;
+ }
+ length += tmplen;
+
+ return length;
+}
+
+/*
+ * Serialize trusted certificate to *pp, or just return the required buffer
+ * length if pp == NULL.
+ *
+ * When pp is not NULL, but *pp == NULL, we allocate the buffer, but since
+ * we're writing two ASN.1 objects back to back, we can't have i2d_X509() do
+ * the allocation, nor can we allow i2d_X509_CERT_AUX() to increment the
+ * allocated buffer.
+ */
+int i2d_X509_AUX(X509 *a, unsigned char **pp)
+{
+ int length;
+ unsigned char *tmp;
+
+ /* Buffer provided by caller */
+ if (pp == NULL || *pp != NULL)
+ return i2d_x509_aux_internal(a, pp);
+
+ /* Obtain the combined length */
+ if ((length = i2d_x509_aux_internal(a, NULL)) <= 0)
+ return length;
+
+ /* Allocate requisite combined storage */
+ *pp = tmp = OPENSSL_malloc(length);
+ if (tmp == NULL)
+ return -1; /* Push error onto error stack? */
+
+ /* Encode, but keep *pp at the originally malloced pointer */
+ length = i2d_x509_aux_internal(a, &tmp);
+ if (length <= 0) {
+ OPENSSL_free(*pp);
+ *pp = NULL;
+ }
+ return length;
+}
+
+void X509_get0_signature(const ASN1_BIT_STRING **psig, const X509_ALGOR **palg,
+ const X509 *x)
+{
+ if (psig)
+ *psig = x->signature;
+ if (palg)
+ *palg = x->sig_alg;
+}
+
+int X509_get_signature_nid(const X509 *x)
+{
+ return OBJ_obj2nid(x->sig_alg->algorithm);
+}
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