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/* Copyright (c) 2020, 2025, Oracle and/or its affiliates.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License, version 2.0,
as published by the Free Software Foundation.
This program is designed to work with certain software (including
but not limited to OpenSSL) that is licensed under separate terms,
as designated in a particular file or component or in included license
documentation. The authors of MySQL hereby grant you an additional
permission to link the program and your derivative works with the
separately licensed software that they have either included with
the program or referenced in the documentation.
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, version 2.0, for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
#ifndef SSL_INIT_CALLBACK_INCLUDED
#define SSL_INIT_CALLBACK_INCLUDED
#include <atomic>
#include <string>
#include <sql/auth/auth_common.h> /* ssl_artifacts_status */
extern std::atomic_bool g_admin_ssl_configured;
extern std::string mysql_main_channel;
extern std::string mysql_admin_channel;
/** helper class to deal with optionally empty strings */
class OptionalString {
public:
OptionalString() : value_(), empty_(true) {}
OptionalString(const char *s) : value_(s ? s : ""), empty_(!s) {}
~OptionalString() = default;
OptionalString(const OptionalString &) = default;
const char *c_str() const { return empty_ ? nullptr : value_.c_str(); }
OptionalString &assign(const char *s) {
value_.assign(s ? s : "");
empty_ = !s;
return *this;
}
private:
std::string value_;
bool empty_;
};
/* Class to encasulate callbacks for init/reinit */
class Ssl_init_callback {
public:
virtual void read_parameters(OptionalString *ca, OptionalString *capath,
OptionalString *version, OptionalString *cert,
OptionalString *cipher,
OptionalString *ciphersuites,
OptionalString *key, OptionalString *crl,
OptionalString *crl_path,
bool *session_cache_mode,
long *session_cache_timeout) = 0;
virtual bool provision_certs() = 0;
virtual bool warn_self_signed_ca() = 0;
virtual ~Ssl_init_callback() = default;
};
/**
Class to encasulate callbacks for init/reinit
for client server connection port
*/
class Ssl_init_callback_server_main final : public Ssl_init_callback {
public:
void read_parameters(OptionalString *ca, OptionalString *capath,
OptionalString *version, OptionalString *cert,
OptionalString *cipher, OptionalString *ciphersuites,
OptionalString *key, OptionalString *crl,
OptionalString *crl_path, bool *session_cache_mode,
long *session_cache_timeout) override;
bool provision_certs() override;
bool warn_self_signed_ca() override;
~Ssl_init_callback_server_main() override = default;
private:
ssl_artifacts_status auto_detect_ssl();
};
/**
Class to encasulate callbacks for init/reinit
for admin connection port
*/
class Ssl_init_callback_server_admin final : public Ssl_init_callback {
public:
void read_parameters(OptionalString *ca, OptionalString *capath,
OptionalString *version, OptionalString *cert,
OptionalString *cipher, OptionalString *ciphersuites,
OptionalString *key, OptionalString *crl,
OptionalString *crl_path, bool *session_cache_mode,
long *session_cache_timeout) override;
bool provision_certs() override {
/*
No automatic provisioning. Always return
success to fallback to system variables.
*/
return false;
}
bool warn_self_signed_ca() override;
~Ssl_init_callback_server_admin() override = default;
};
extern Ssl_init_callback_server_main server_main_callback;
extern Ssl_init_callback_server_admin server_admin_callback;
/**
Helper method to validate values of --tls-version and --admin-tls-version
*/
bool validate_tls_version(const char *val);
enum class TLS_version { TLSv12 = 0, TLSv13 };
/**
Helper method to validate values of --ssl-cipher and --admin-ssl-cipher
*/
void validate_ciphers(const char *option, const char *val, TLS_version version);
#endif // !SSL_INIT_CALLBACK_INCLUDED
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