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-rw-r--r--wsrep-lib/src/tls_service_v1.cpp232
1 files changed, 232 insertions, 0 deletions
diff --git a/wsrep-lib/src/tls_service_v1.cpp b/wsrep-lib/src/tls_service_v1.cpp
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+++ b/wsrep-lib/src/tls_service_v1.cpp
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+/*
+ * Copyright (C) 2020 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 "tls_service_v1.hpp"
+
+#include "wsrep/tls_service.hpp"
+#include "wsrep/logger.hpp"
+#include "v26/wsrep_tls_service.h"
+#include "service_helpers.hpp"
+
+#include <cassert>
+
+namespace wsrep_tls_service_v1
+{
+ static wsrep::tls_service* tls_service_impl{0};
+ static std::atomic<size_t> use_count;
+
+ static int tls_stream_init_cb(
+ wsrep_tls_context_t*,
+ wsrep_tls_stream_t* stream)
+ {
+ assert(tls_service_impl);
+ stream->opaque =
+ tls_service_impl->create_tls_stream(stream->fd);
+ if (not stream->opaque)
+ {
+ return ENOMEM;
+ }
+ return 0;
+ }
+
+ static void tls_stream_deinit_cb(
+ wsrep_tls_context_t*,
+ wsrep_tls_stream_t* stream)
+ {
+ assert(tls_service_impl);
+ tls_service_impl->destroy(
+ reinterpret_cast<wsrep::tls_stream*>(stream->opaque));
+ }
+
+ static int tls_stream_get_error_number_cb(
+ wsrep_tls_context_t*,
+ const wsrep_tls_stream_t* stream)
+ {
+ assert(tls_service_impl);
+ return tls_service_impl->get_error_number(
+ reinterpret_cast<const wsrep::tls_stream*>(stream->opaque));
+ }
+
+ static const void* tls_stream_get_error_category_cb(
+ wsrep_tls_context_t*,
+ const wsrep_tls_stream_t* stream)
+ {
+ assert(tls_service_impl);
+ return tls_service_impl->get_error_category(
+ reinterpret_cast<const wsrep::tls_stream*>(stream->opaque));
+ }
+
+ static const char* tls_error_message_get_cb(
+ wsrep_tls_context_t*,
+ const wsrep_tls_stream_t* stream,
+ int value, const void* category)
+ {
+ assert(tls_service_impl);
+ return tls_service_impl->get_error_message(
+ reinterpret_cast<const wsrep::tls_stream*>(stream->opaque), value, category);
+ }
+
+ static enum wsrep_tls_result map_return_value(ssize_t status)
+ {
+ switch (status)
+ {
+ case wsrep::tls_service::success:
+ return wsrep_tls_result_success;
+ case wsrep::tls_service::want_read:
+ return wsrep_tls_result_want_read;
+ case wsrep::tls_service::want_write:
+ return wsrep_tls_result_want_write;
+ case wsrep::tls_service::eof:
+ return wsrep_tls_result_eof;
+ case wsrep::tls_service::error:
+ return wsrep_tls_result_error;
+ default:
+ assert(status < 0);
+ return wsrep_tls_result_error;
+ }
+ }
+
+
+ static enum wsrep_tls_result
+ tls_stream_client_handshake_cb(
+ wsrep_tls_context_t*,
+ wsrep_tls_stream_t* stream)
+ {
+ assert(tls_service_impl);
+ return map_return_value(
+ tls_service_impl->client_handshake(
+ reinterpret_cast<wsrep::tls_stream*>(stream->opaque)));
+ }
+
+ static enum wsrep_tls_result
+ tls_stream_server_handshake_cb(
+ wsrep_tls_context_t*,
+ wsrep_tls_stream_t* stream)
+ {
+ assert(tls_service_impl);
+ return map_return_value(
+ tls_service_impl->server_handshake(
+ reinterpret_cast<wsrep::tls_stream*>(stream->opaque)));
+ }
+
+ static enum wsrep_tls_result tls_stream_read_cb(
+ wsrep_tls_context_t*,
+ wsrep_tls_stream_t* stream,
+ void* buf,
+ size_t max_count,
+ size_t* bytes_transferred)
+ {
+ assert(tls_service_impl);
+ auto result(tls_service_impl->read(
+ reinterpret_cast<wsrep::tls_stream*>(stream->opaque),
+ buf, max_count));
+ *bytes_transferred = result.bytes_transferred;
+ return map_return_value(result.status);
+ }
+
+ static enum wsrep_tls_result tls_stream_write_cb(
+ wsrep_tls_context_t*,
+ wsrep_tls_stream_t* stream,
+ const void* buf,
+ size_t count,
+ size_t* bytes_transferred)
+ {
+ assert(tls_service_impl);
+ auto result(tls_service_impl->write(
+ reinterpret_cast<wsrep::tls_stream*>(stream->opaque),
+ buf, count));
+ *bytes_transferred = result.bytes_transferred;
+ return map_return_value(result.status);
+ }
+
+ static enum wsrep_tls_result
+ tls_stream_shutdown_cb(wsrep_tls_context_t*,
+ wsrep_tls_stream_t* stream)
+ {
+ assert(tls_service_impl);
+ // @todo Handle other values than success.
+ return map_return_value(
+ tls_service_impl->shutdown(
+ reinterpret_cast<wsrep::tls_stream*>(stream->opaque)));
+ }
+
+ static wsrep_tls_service_v1_t tls_service_callbacks =
+ {
+ tls_stream_init_cb,
+ tls_stream_deinit_cb,
+ tls_stream_get_error_number_cb,
+ tls_stream_get_error_category_cb,
+ tls_stream_client_handshake_cb,
+ tls_stream_server_handshake_cb,
+ tls_stream_read_cb,
+ tls_stream_write_cb,
+ tls_stream_shutdown_cb,
+ tls_error_message_get_cb,
+ 0 // we pass NULL context for now.
+ };
+}
+
+int wsrep::tls_service_v1_probe(void* dlh)
+{
+ typedef int (*init_fn)(wsrep_tls_service_v1_t*);
+ typedef void (*deinit_fn)();
+ if (wsrep_impl::service_probe<init_fn>(
+ dlh, WSREP_TLS_SERVICE_INIT_FUNC_V1, "tls service v1") ||
+ wsrep_impl::service_probe<deinit_fn>(
+ dlh, WSREP_TLS_SERVICE_DEINIT_FUNC_V1, "tls service v1"))
+ {
+ wsrep::log_warning() << "Provider does not support tls service v1";
+ return 1;
+ }
+ return 0;
+}
+
+int wsrep::tls_service_v1_init(void* dlh,
+ wsrep::tls_service* tls_service)
+{
+ if (not (dlh && tls_service)) return EINVAL;
+
+ typedef int (*init_fn)(wsrep_tls_service_v1_t*);
+ wsrep_tls_service_v1::tls_service_impl = tls_service;
+ int ret(0);
+ if ((ret = wsrep_impl::service_init<init_fn>(
+ dlh, WSREP_TLS_SERVICE_INIT_FUNC_V1,
+ &wsrep_tls_service_v1::tls_service_callbacks,
+ "tls service v1")))
+ {
+ wsrep_tls_service_v1::tls_service_impl = 0;
+ }
+ else
+ {
+ ++wsrep_tls_service_v1::use_count;
+ }
+ return ret;
+}
+
+void wsrep::tls_service_v1_deinit(void* dlh)
+{
+ typedef int (*deinit_fn)();
+ wsrep_impl::service_deinit<deinit_fn>(
+ dlh, WSREP_TLS_SERVICE_DEINIT_FUNC_V1, "tls service v1");
+ --wsrep_tls_service_v1::use_count;
+ if (wsrep_tls_service_v1::use_count == 0)
+ {
+ wsrep_tls_service_v1::tls_service_impl = 0;
+ }
+}