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+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @verbatim
+ _ _
+ _ __ ___ ___ __| | ___ ___| | mod_ssl
+ | '_ ` _ \ / _ \ / _` | / __/ __| | Apache Interface to OpenSSL
+ | | | | | | (_) | (_| | \__ \__ \ |
+ |_| |_| |_|\___/ \__,_|___|___/___/_|
+ |_____|
+ @endverbatim
+ * @file ssl_util_ssl.h
+ * @brief Additional Utility Functions for OpenSSL
+ *
+ * @defgroup MOD_SSL_UTIL Utilities
+ * @ingroup MOD_SSL
+ * @{
+ */
+
+#ifndef __SSL_UTIL_SSL_H__
+#define __SSL_UTIL_SSL_H__
+
+/**
+ * SSL library version number
+ */
+
+#define MODSSL_LIBRARY_VERSION OPENSSL_VERSION_NUMBER
+#define MODSSL_LIBRARY_NAME "OpenSSL"
+#define MODSSL_LIBRARY_TEXT OPENSSL_VERSION_TEXT
+#if MODSSL_USE_OPENSSL_PRE_1_1_API
+#define MODSSL_LIBRARY_DYNTEXT SSLeay_version(SSLEAY_VERSION)
+#else
+#define MODSSL_LIBRARY_DYNTEXT OpenSSL_version(OPENSSL_VERSION)
+#endif
+
+/**
+ * Maximum length of a DER encoded session.
+ * FIXME: There is no define in OpenSSL, but OpenSSL uses 1024*10,
+ * so this value should be ok. Although we have no warm feeling.
+ */
+#define MODSSL_SESSION_MAX_DER 1024*10
+
+/** max length for modssl_SSL_SESSION_id2sz */
+#define MODSSL_SESSION_ID_STRING_LEN \
+ ((SSL_MAX_SSL_SESSION_ID_LENGTH + 1) * 2)
+
+/**
+ * Additional Functions
+ */
+void modssl_init_app_data2_idx(void);
+void *modssl_get_app_data2(SSL *);
+void modssl_set_app_data2(SSL *, void *);
+
+/* Read private key from filename in either PEM or raw base64(DER)
+ * format, using password entry callback cb and userdata. */
+EVP_PKEY *modssl_read_privatekey(const char *filename, pem_password_cb *cb, void *ud);
+
+int modssl_smart_shutdown(SSL *ssl);
+BOOL modssl_X509_getBC(X509 *, int *, int *);
+char *modssl_X509_NAME_ENTRY_to_string(apr_pool_t *p, X509_NAME_ENTRY *xsne,
+ int raw);
+char *modssl_X509_NAME_to_string(apr_pool_t *, X509_NAME *, int);
+BOOL modssl_X509_getSAN(apr_pool_t *, X509 *, int, const char *, int, apr_array_header_t **);
+BOOL modssl_X509_match_name(apr_pool_t *, X509 *, const char *, BOOL, server_rec *);
+char *modssl_SSL_SESSION_id2sz(IDCONST unsigned char *, int, char *, int);
+
+/* Reads the remaining data in BIO, if not empty, and copies it into a
+ * pool-allocated string. If empty, returns NULL. BIO_free(bio) is
+ * called for both cases. */
+char *modssl_bio_free_read(apr_pool_t *p, BIO *bio);
+
+/* Read a single certificate and its private key from the given string in PEM format.
+ * If `key_pem` is NULL, it will expect the key in `cert_pem`.
+ */
+apr_status_t modssl_read_cert(apr_pool_t *p,
+ const char *cert_pem, const char *key_pem,
+ pem_password_cb *cb, void *ud,
+ X509 **pcert, EVP_PKEY **pkey);
+
+/* Convert a certificate (and optionally a second) into a PEM string.
+ * @param p pool for allocations
+ * @param cert1 the certificate to convert
+ * @param cert2 a second cert to add to the PEM afterwards or NULL.
+ * @param ppem the certificate(s) in PEM format, NUL-terminated.
+ * @return APR_SUCCESS if ppem is valid.
+ */
+apr_status_t modssl_cert_get_pem(apr_pool_t *p,
+ X509 *cert1, X509 *cert2,
+ const char **ppem);
+
+#endif /* __SSL_UTIL_SSL_H__ */
+/** @} */
+