238 lines
9.7 KiB
Java
238 lines
9.7 KiB
Java
package TestingSystem.DVM;
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import Common.Constants;
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import Common.Global;
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import Common.Utils.Utils;
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import Common.Utils.Validators.ShellParser;
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import GlobalData.Machine.Machine;
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import GlobalData.RemoteFile.RemoteFile;
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import GlobalData.User.User;
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import Visual_DVM_2021.Passes.PassException;
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import com.jcraft.jsch.*;
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import javafx.util.Pair;
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import java.io.*;
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import java.nio.charset.StandardCharsets;
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import java.util.LinkedHashMap;
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import java.util.Vector;
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public class UserConnection {
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public ChannelSftp sftpChannel = null;
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public ChannelShell shellChannel = null;
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//--
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JSch jsch = null;
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Session session = null;
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//---
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PipedInputStream in = null;
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PipedOutputStream out = null;
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//---
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PipedOutputStream pin = null;
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PipedInputStream pout = null;
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InputStreamReader fromServer = null;
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//---
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public UserConnection(Machine machine, User user) throws Exception {
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session = (jsch = new JSch()).getSession(user.login, machine.address, machine.port);
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session.setPassword(user.password);
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session.setConfig("StrictHostKeyChecking", "no");
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session.connect(0);
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//-->
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//создать канал для файлов
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sftpChannel = (ChannelSftp) session.openChannel("sftp");
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sftpChannel.connect();
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//-->
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//создать канал для команд
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shellChannel = (ChannelShell) session.openChannel("shell");
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in = new PipedInputStream();
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out = new PipedOutputStream();
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shellChannel.setInputStream(in);
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shellChannel.setOutputStream(out);
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pin = new PipedOutputStream(in);
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pout = new PipedInputStream(out);
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shellChannel.connect();
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//-
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fromServer = new InputStreamReader(pout);
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ShellParser.setUserName(user.login);
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ShellParser.ReadInvitation(fromServer); //прочитать первое приглашение от машины.
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}
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public void Disconnect() {
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if (in != null) {
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try {
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in.close();
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} catch (Exception exception) {
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Global.Log.PrintException(exception);
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}
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}
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if (out != null) {
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try {
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out.close();
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} catch (Exception exception) {
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Global.Log.PrintException(exception);
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}
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}
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if (pin != null) {
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try {
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pin.close();
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} catch (Exception exception) {
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Global.Log.PrintException(exception);
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}
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}
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if (pout != null) {
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try {
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pout.close();
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} catch (Exception exception) {
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Global.Log.PrintException(exception);
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}
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}
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if (fromServer != null) {
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try {
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fromServer.close();
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} catch (Exception exception) {
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Global.Log.PrintException(exception);
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}
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}
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if (sftpChannel != null) sftpChannel.disconnect();
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if (shellChannel != null) shellChannel.disconnect();
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if (session != null) session.disconnect();
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//----------------------
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sftpChannel = null;
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shellChannel = null;
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jsch = null;
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session = null;
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//---
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in = null;
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out = null;
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//---
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pin = null;
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pout = null;
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fromServer = null;
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System.gc();
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}
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//--
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//todo из за мусора результатом пользоваться в общем случае невозможно.
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//следует перенаправлять вывод в какой нибудь временный файл на сервере.
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public String ShellCommand(String command) throws Exception {
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StringBuilder result = new StringBuilder();
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pin.write((command + "\r\n").getBytes());
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ShellParser.ReadInvitation(fromServer); //первое приглашение после эхо. возможен мусор.
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result.append(ShellParser.getCommandResult(fromServer)); //возможный результат и второе приглашение.
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String[] data = result.toString().split("\n");
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return (data.length > 0) ? data[data.length - 1] : result.toString();
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}
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public void getSingleFile(String src, String dst) throws Exception {
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sftpChannel.get(src, dst);
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}
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public long getFileKBSize(String path) throws Exception {
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long size = sftpChannel.lstat(path).getSize();
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return size / 1024;
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}
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public void getSingleFileWithMaxSize(RemoteFile src, File dst, int maxSize) throws Exception {
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if ((maxSize == 0) || getFileKBSize(src.full_name) <= maxSize) {
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getSingleFile(src.full_name, dst.getAbsolutePath());
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} else {
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Utils.WriteToFile(dst, "Размер файла превышает " + maxSize + " KB.\n" + "Файл не загружен. Его можно просмотреть на машине по адресу\n" + Utils.Brackets(src.full_name));
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}
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}
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public void putSingleFile(File src, RemoteFile dst) throws Exception {
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sftpChannel.put(src.getAbsolutePath(), dst.full_name);
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}
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//-
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public void MKDIR(RemoteFile dir) throws Exception {
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if (!Exists(dir)) sftpChannel.mkdir(dir.full_name);
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}
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//-
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public void RMDIR(String dir) throws Exception {
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if (!dir.isEmpty() && !dir.equals("/") && !dir.equals("\\") && !dir.equals("*")) {
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ShellCommand("rm -rf " + Utils.DQuotes(dir));
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} else throw new PassException("Недопустимый путь для удаления папки " + Utils.DQuotes(dir));
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}
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//-
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public void SynchronizeSubDirsR(File local_dir, RemoteFile remote_dir) throws Exception {
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File[] local_subdirs = local_dir.listFiles(File::isDirectory);
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File[] local_files = local_dir.listFiles(File::isFile);
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//------------------------------------------------------------------------
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LinkedHashMap<String, RemoteFile> remote_subdirs = new LinkedHashMap<>();
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LinkedHashMap<String, RemoteFile> remote_files = new LinkedHashMap<>();
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Vector<ChannelSftp.LsEntry> files = sftpChannel.ls(remote_dir.full_name);
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for (ChannelSftp.LsEntry file : files) {
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if (file.getAttrs().isDir()) {
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if (!file.getFilename().equals(".") && !file.getFilename().equals(".."))
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remote_subdirs.put(file.getFilename(), new RemoteFile(remote_dir.full_name, file.getFilename(), true));
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} else {
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RemoteFile rf = new RemoteFile(remote_dir.full_name, file.getFilename());
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rf.updateTime = RemoteFile.convertUpdateTime(file.getAttrs().getMTime());
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remote_files.put(file.getFilename(), rf);
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}
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}
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if (local_subdirs != null) {
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for (File lsd : local_subdirs) {
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if (!lsd.getName().equals(Constants.data)) {
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RemoteFile rsd = null;
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if (!remote_subdirs.containsKey(lsd.getName()))
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sftpChannel.mkdir((rsd = new RemoteFile(remote_dir.full_name, lsd.getName(), true)).full_name);
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else rsd = remote_subdirs.get(lsd.getName());
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SynchronizeSubDirsR(lsd, rsd);
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}
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}
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}
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if (local_files != null) {
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for (File lf : local_files) {
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RemoteFile rf = null;
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if (!remote_files.containsKey(lf.getName())) {
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rf = new RemoteFile(remote_dir.full_name, lf.getName());
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putSingleFile(lf, rf);
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} else {
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rf = remote_files.get(lf.getName());
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if (lf.lastModified() > rf.updateTime) {
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putSingleFile(lf, rf);
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}
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}
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}
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}
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}
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public void writeToFile(String text, RemoteFile dst) throws Exception {
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sftpChannel.put(new ByteArrayInputStream(text.getBytes(StandardCharsets.UTF_8)), dst.full_name);
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sftpChannel.chmod(0777, dst.full_name);
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}
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public String readFromFile(RemoteFile src) throws Exception {
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ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
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sftpChannel.get(src.full_name, outputStream);
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return outputStream.toString(StandardCharsets.UTF_8.name());
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}
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//--
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public boolean Exists(String file_full_name) throws Exception {
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try {
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sftpChannel.lstat(file_full_name);
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return true;
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} catch (SftpException e) {
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if (e.id == ChannelSftp.SSH_FX_NO_SUCH_FILE) {
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// file doesn't exist
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return false;
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} else {
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// something else went wrong
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throw e;
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}
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}
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}
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public boolean Exists(RemoteFile file) throws Exception {
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return Exists(file.full_name);
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}
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//--
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public Pair<RemoteFile, RemoteFile> performScript(RemoteFile directory, String... commands) throws Exception {
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RemoteFile script_file = new RemoteFile(directory, Constants.script);
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RemoteFile out = new RemoteFile(directory, Constants.out_file);
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RemoteFile err = new RemoteFile(directory, Constants.err_file);
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//
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Vector<RemoteFile> files = new Vector<>();
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files.add(script_file);
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files.add(out);
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files.add(err);
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for (RemoteFile file : files) {
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if (Exists(file))
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sftpChannel.rm(file.full_name);
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}
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//--
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writeToFile("cd " + Utils.DQuotes(directory.full_name)+"\n"+ String.join("\n", commands), script_file);
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//--
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ShellCommand(script_file.full_name + " 1>" + Utils.DQuotes(out.full_name) + " 2>" + Utils.DQuotes(err.full_name));
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return new Pair<>(out, err);
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}
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}
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