--- /dev/null
+#ifndef SSL_COMMON_H_INCLUDED
+#define SSL_COMMON_H_INCLUDED
+/*********************************************************************
+*
+* File : $Source: /cvsroot/ijbswa/current/ssl.h,v $
+*
+* Purpose : File with TLS/SSL extension. Contains methods for
+* creating, using and closing TLS/SSL connections that do
+* not depend on particular TLS/SSL library.
+*
+* Copyright : Written by and Copyright (c) 2017 Vaclav Svec. FIT CVUT.
+*
+* This program is free software; you can redistribute it
+* and/or modify it under the terms of the GNU General
+* Public License as published by the Free Software
+* Foundation; either version 2 of the License, or (at
+* your option) any later version.
+*
+* This program is distributed in the hope that it will
+* be useful, but WITHOUT ANY WARRANTY; without even the
+* implied warranty of MERCHANTABILITY or FITNESS FOR A
+* PARTICULAR PURPOSE. See the GNU General Public
+* License for more details.
+*
+* The GNU General Public License should be included with
+* this file. If not, you can view it at
+* http://www.gnu.org/copyleft/gpl.html
+* or write to the Free Software Foundation, Inc., 59
+* Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+*
+*********************************************************************/
+
+#include "project.h"
+
+#define RSA_KEY_PUBLIC_EXPONENT 65537 /* Public exponent for RSA private key generating */
+#define RSA_KEYSIZE 2048 /* Size of generated RSA keys */
+#define ERROR_BUF_SIZE 1024 /* Size of buffer for error messages */
+#define INVALID_CERT_INFO_BUF_SIZE 2048 /* Size of buffer for message with information about reason of certificate invalidity. Data after the end of buffer will not be saved */
+#define KEY_FILE_TYPE ".pem"
+#define CERT_FILE_TYPE ".crt"
+
+#define CERT_PARAM_COMMON_NAME_FCODE "CN"
+#define CERT_PARAM_ORGANIZATION_FCODE "O"
+#define CERT_PARAM_ORG_UNIT_FCODE "OU"
+#define CERT_PARAM_COUNTRY_FCODE "C"
+#define CERT_PARAM_COUNTRY_CODE "CZ"
+#define CERT_SUBJECT_PASSWORD ""
+#define CERT_INFO_PREFIX ""
+
+/*
+ * Properties of cert for generating
+ */
+typedef struct {
+ char *issuer_crt; /* filename of the issuer certificate */
+ char *subject_key; /* filename of the subject key file */
+ char *issuer_key; /* filename of the issuer key file */
+ const char *subject_pwd; /* password for the subject key file */
+ const char *issuer_pwd; /* password for the issuer key file */
+ char *output_file; /* where to store the constructed key file */
+ const char *subject_name; /* subject name for certificate */
+ char issuer_name[ISSUER_NAME_BUF_SIZE]; /* issuer name for certificate */
+ const char *not_before; /* validity period not before */
+ const char *not_after; /* validity period not after */
+ const char *serial; /* serial number string */
+ int is_ca; /* is a CA certificate */
+ int max_pathlen; /* maximum CA path length */
+} cert_options;
+
+extern void free_certificate_chain(struct client_state *csp);
+extern int file_exists(const char *path);
+extern char *make_certs_path(const char *conf_dir, const char *file_name,
+ const char *suffix);
+extern unsigned long get_certificate_serial(struct client_state *csp);
+extern int get_certificate_valid_from_date(char *buffer, size_t buffer_size, const char *fmt);
+extern int get_certificate_valid_to_date(char *buffer, size_t buffer_size, const char *fmt);
+extern int host_is_ip_address(const char *host);
+
+#endif /* ndef SSL_COMMON_H_INCLUDED */