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/*
* Copyright (C) 2021 Codership Oy <info@codership.com>
*
* This file is part of wsrep-lib.
*
* Wsrep-lib 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.
*
* Wsrep-lib 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.
*
* You should have received a copy of the GNU General Public License
* along with wsrep-lib. If not, see <https://www.gnu.org/licenses/>.
*/
#include "allowlist_service_v1.hpp"
#include "service_helpers.hpp"
#include "wsrep/allowlist_service.hpp"
#include "wsrep/buffer.hpp"
#include "v26/wsrep_allowlist_service.h"
#include <cassert>
#include <dlfcn.h>
#include <cerrno>
namespace wsrep_allowlist_service_v1
{
// Pointer to allowlist service implementation provided by
// the application.
static wsrep::allowlist_service* allowlist_service_impl{ 0 };
static std::atomic<size_t> use_count;
enum wsrep::allowlist_service::allowlist_key allowlist_key_from_native(wsrep_allowlist_key_t key)
{
switch (key)
{
case WSREP_ALLOWLIST_KEY_IP: return wsrep::allowlist_service::allowlist_key::allowlist_ip;
case WSREP_ALLOWLIST_KEY_SSL: return wsrep::allowlist_service::allowlist_key::allowlist_ssl;
default: throw wsrep::runtime_error("Unknown allowlist key");
}
}
//
// allowlist service callbacks
//
wsrep_status_t allowlist_cb(
wsrep_allowlist_context_t*,
wsrep_allowlist_key_t key,
const wsrep_buf_t* value
)
{
assert(allowlist_service_impl);
wsrep::const_buffer allowlist_value(value->ptr, value->len);
if (allowlist_service_impl->allowlist_cb(allowlist_key_from_native(key),
allowlist_value))
{
return WSREP_OK;
}
return WSREP_NOT_ALLOWED;
}
static wsrep_allowlist_service_v1_t allowlist_service_callbacks
= { allowlist_cb,
0 };
}
int wsrep::allowlist_service_v1_probe(void* dlh)
{
typedef int (*init_fn)(wsrep_allowlist_service_v1_t*);
typedef void (*deinit_fn)();
if (wsrep_impl::service_probe<init_fn>(
dlh, WSREP_ALLOWLIST_SERVICE_INIT_FUNC_V1, "allowlist service v1") ||
wsrep_impl::service_probe<deinit_fn>(
dlh, WSREP_ALLOWLIST_SERVICE_DEINIT_FUNC_V1, "allowlist service v1"))
{
wsrep::log_warning() << "Provider does not support allowlist service v1";
return 1;
}
return 0;
}
int wsrep::allowlist_service_v1_init(void* dlh,
wsrep::allowlist_service* allowlist_service)
{
if (not (dlh && allowlist_service)) return EINVAL;
typedef int (*init_fn)(wsrep_allowlist_service_v1_t*);
wsrep_allowlist_service_v1::allowlist_service_impl = allowlist_service;
int ret(0);
if ((ret = wsrep_impl::service_init<init_fn>(
dlh, WSREP_ALLOWLIST_SERVICE_INIT_FUNC_V1,
&wsrep_allowlist_service_v1::allowlist_service_callbacks,
"allowlist service v1")))
{
wsrep_allowlist_service_v1::allowlist_service_impl = 0;
}
else
{
++wsrep_allowlist_service_v1::use_count;
}
return ret;
}
void wsrep::allowlist_service_v1_deinit(void* dlh)
{
typedef int (*deinit_fn)();
wsrep_impl::service_deinit<deinit_fn>(
dlh, WSREP_ALLOWLIST_SERVICE_DEINIT_FUNC_V1, "allowlist service v1");
--wsrep_allowlist_service_v1::use_count;
if (wsrep_allowlist_service_v1::use_count == 0)
{
wsrep_allowlist_service_v1::allowlist_service_impl = 0;
}
}
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