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https://github.com/nestriness/cdc-file-transfer.git
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a8059e8572
Instead of calling netstat on the remote device to detect available ports, simply call bind with port 0 to bind to any available port. Since the port is not yet known when cdc_rsync_server.exe is called, port forwarding needs to be started AFTER the server reports its port.
126 lines
3.7 KiB
C++
126 lines
3.7 KiB
C++
/*
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* Copyright 2022 Google LLC
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef CDC_RSYNC_SERVER_CDC_RSYNC_SERVER_H_
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#define CDC_RSYNC_SERVER_CDC_RSYNC_SERVER_H_
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#include <memory>
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#include <string>
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#include <vector>
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#include "absl/status/status.h"
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#include "cdc_rsync/base/message_pump.h"
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#include "cdc_rsync_server/file_diff_generator.h"
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#include "cdc_rsync_server/file_info.h"
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#include "common/gamelet_component.h"
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#include "common/path_filter.h"
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namespace cdc_ft {
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class MessagePump;
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class ServerSocket;
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class SocketFinalizer;
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class CdcRsyncServer {
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public:
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CdcRsyncServer();
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~CdcRsyncServer();
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// Checks that the gamelet components (cdc_rsync_server binary etc.) are
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// up-to-date by checking their sizes and timestamps.
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bool CheckComponents(const std::vector<GameletComponent>& components);
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// Listens to any available port, accepts a connection from the client and
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// runs the rsync procedure. Prints "Port <n>: Server is listening" to stdout,
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// so the client can retrieve the selected port.
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absl::Status Run();
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// Returns the verbosity sent from the client. 0 by default.
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int GetVerbosity() const { return verbosity_; }
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private:
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// Runs the rsync procedure.
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absl::Status Sync();
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// Receives options from the client.
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absl::Status HandleSetOptions();
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// Finds all server-side files in the |destination_| folder.
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absl::Status FindFiles();
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// Receives all client-side files.
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absl::Status HandleSendAllFiles();
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// Diffs client- and server-side files.
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absl::Status DiffFiles();
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// Deletes files and directories present on the server, but not on the client.
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absl::Status RemoveExtraneousFilesAndDirs();
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// Creates missing directories.
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absl::Status CreateMissingDirs();
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// Sends file indices to the client. Used for missing and changed files.
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template <typename T>
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absl::Status SendFileIndices(const char* file_type,
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const std::vector<T>& files);
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// Receives missing files from the client.
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absl::Status HandleSendMissingFileData();
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// Core rsync algorithm. Sends signatures of changed files to the client,
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// receives diffs and applies them.
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absl::Status SyncChangedFiles();
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// Waits for the shutdown message and send an ack.
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absl::Status HandleShutdown();
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// Called on |message_pump_|'s receiver thread whenever a package is received.
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// Used to toggle decompression.
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void Thread_OnPackageReceived(PacketType type);
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// The order determines the correct destruction order, so keep it!
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std::unique_ptr<SocketFinalizer> socket_finalizer_;
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std::unique_ptr<ServerSocket> socket_;
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std::unique_ptr<MessagePump> message_pump_;
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std::string destination_;
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// Options.
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bool delete_ = false;
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bool recursive_ = false;
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int verbosity_ = 0;
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bool whole_file_ = false;
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bool compress_ = false;
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bool checksum_ = false;
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bool relative_ = false;
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bool dry_run_ = false;
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bool existing_ = false;
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std::string copy_dest_;
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PathFilter path_filter_;
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std::vector<FileInfo> client_files_;
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std::vector<DirInfo> client_dirs_;
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std::vector<FileInfo> server_files_;
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std::vector<DirInfo> server_dirs_;
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file_diff::Result diff_;
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};
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} // namespace cdc_ft
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#endif // CDC_RSYNC_SERVER_CDC_RSYNC_SERVER_H_
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