Program: 141668
Project: 141668
Buggy source:
public void connect(String[] args) throws Exception {
  ClientConfig config=new ClientConfig(args);
  SimpleLogger.setLevel(config.getLevel());
  if (config.getFile() != null) {
    StringBuilder sb=new StringBuilder();
    sb.setLength(0);
    try (Reader reader=new BufferedReader(new InputStreamReader(new FileInputStream(config.getFile())))){
      for (int c=reader.read(); c >= 0; c=reader.read()) {
        sb.append((char)c);
      }
    }
     config.setCommand(sb.toString());
  }
 else   if (config.isBatch()) {
    StringBuilder sb=new StringBuilder();
    sb.setLength(0);
    Reader reader=new BufferedReader(new InputStreamReader(System.in));
    for (int c=reader.read(); c >= 0; c=reader.read()) {
      sb.append((char)c);
    }
    config.setCommand(sb.toString());
  }
  SshClient client=ClientBuilder.builder().build();
  setupAgent(config.getUser(),config.getKeyFile(),client);
  client.getProperties().put(FactoryManager.IDLE_TIMEOUT,String.valueOf(config.getIdleTimeout()));
  final Console console=System.console();
  if (console != null) {
    client.setUserInteraction(new UserInteraction(){
      @Override public void welcome(      ClientSession s,      String banner,      String lang){
        System.err.println(banner);
      }
      @Override public String[] interactive(      ClientSession s,      String name,      String instruction,      String lang,      String[] prompt,      boolean[] echo){
        String[] answers=new String[prompt.length];
        try {
          for (int i=0; i < prompt.length; i++) {
            if (echo[i]) {
              answers[i]=console.readLine(prompt[i] + "String_Node_Str");
            }
 else {
              answers[i]=new String(console.readPassword(prompt[i] + "String_Node_Str"));
            }
            if (answers[i] == null) {
              return null;
            }
          }
          return answers;
        }
 catch (        IOError e) {
          return null;
        }
      }
      @Override public boolean isInteractionAllowed(      ClientSession session){
        return true;
      }
      @Override public void serverVersionInfo(      ClientSession session,      List<String> lines){
      }
      @Override public String getUpdatedPassword(      ClientSession session,      String prompt,      String lang){
        return null;
      }
    }
);
  }
  client.start();
  if (console != null) {
    console.printf("String_Node_Str",config.getUser());
  }
  ClientSession session=connectWithRetries(client,config);
  if (config.getPassword() != null) {
    session.addPasswordIdentity(config.getPassword());
  }
  session.auth().verify();
  int exitStatus=0;
  Terminal terminal=TerminalBuilder.terminal();
  Attributes attributes=terminal.enterRawMode();
  IOConsoleOutputStream outputStream=RuntimeConsoleUtil.getOutputStream();
  try {
    ClientChannel channel;
    if (config.getCommand().length() > 0) {
      channel=session.createChannel("String_Node_Str",config.getCommand() + "String_Node_Str");
      channel.setIn(new ByteArrayInputStream(new byte[0]));
    }
 else {
      ChannelShell shell=session.createShellChannel();
      channel=shell;
      channel.setIn(new NoCloseInputStream(inputStream));
      Map<PtyMode,Integer> modes=new HashMap<>();
      modes.put(PtyMode.VINTR,attributes.getControlChar(ControlChar.VINTR));
      modes.put(PtyMode.VQUIT,attributes.getControlChar(ControlChar.VQUIT));
      modes.put(PtyMode.VERASE,attributes.getControlChar(ControlChar.VERASE));
      modes.put(PtyMode.VKILL,attributes.getControlChar(ControlChar.VKILL));
      modes.put(PtyMode.VEOF,attributes.getControlChar(ControlChar.VEOF));
      modes.put(PtyMode.VEOL,attributes.getControlChar(ControlChar.VEOL));
      modes.put(PtyMode.VEOL2,attributes.getControlChar(ControlChar.VEOL2));
      modes.put(PtyMode.VSTART,attributes.getControlChar(ControlChar.VSTART));
      modes.put(PtyMode.VSTOP,attributes.getControlChar(ControlChar.VSTOP));
      modes.put(PtyMode.VSUSP,attributes.getControlChar(ControlChar.VSUSP));
      modes.put(PtyMode.VDSUSP,attributes.getControlChar(ControlChar.VDSUSP));
      modes.put(PtyMode.VREPRINT,attributes.getControlChar(ControlChar.VREPRINT));
      modes.put(PtyMode.VWERASE,attributes.getControlChar(ControlChar.VWERASE));
      modes.put(PtyMode.VLNEXT,attributes.getControlChar(ControlChar.VLNEXT));
      modes.put(PtyMode.VSTATUS,attributes.getControlChar(ControlChar.VSTATUS));
      modes.put(PtyMode.VDISCARD,attributes.getControlChar(ControlChar.VDISCARD));
      modes.put(PtyMode.IGNPAR,getFlag(attributes,InputFlag.IGNPAR));
      modes.put(PtyMode.PARMRK,getFlag(attributes,InputFlag.PARMRK));
      modes.put(PtyMode.INPCK,getFlag(attributes,InputFlag.INPCK));
      modes.put(PtyMode.ISTRIP,getFlag(attributes,InputFlag.ISTRIP));
      modes.put(PtyMode.INLCR,getFlag(attributes,InputFlag.INLCR));
      modes.put(PtyMode.IGNCR,getFlag(attributes,InputFlag.IGNCR));
      modes.put(PtyMode.ICRNL,getFlag(attributes,InputFlag.ICRNL));
      modes.put(PtyMode.IXON,getFlag(attributes,InputFlag.IXON));
      modes.put(PtyMode.IXANY,getFlag(attributes,InputFlag.IXANY));
      modes.put(PtyMode.IXOFF,getFlag(attributes,InputFlag.IXOFF));
      modes.put(PtyMode.ISIG,getFlag(attributes,LocalFlag.ISIG));
      modes.put(PtyMode.ICANON,getFlag(attributes,LocalFlag.ICANON));
      modes.put(PtyMode.ECHO,getFlag(attributes,LocalFlag.ECHO));
      modes.put(PtyMode.ECHOE,getFlag(attributes,LocalFlag.ECHOE));
      modes.put(PtyMode.ECHOK,getFlag(attributes,LocalFlag.ECHOK));
      modes.put(PtyMode.ECHONL,getFlag(attributes,LocalFlag.ECHONL));
      modes.put(PtyMode.NOFLSH,getFlag(attributes,LocalFlag.NOFLSH));
      modes.put(PtyMode.TOSTOP,getFlag(attributes,LocalFlag.TOSTOP));
      modes.put(PtyMode.IEXTEN,getFlag(attributes,LocalFlag.IEXTEN));
      modes.put(PtyMode.OPOST,getFlag(attributes,OutputFlag.OPOST));
      modes.put(PtyMode.ONLCR,getFlag(attributes,OutputFlag.ONLCR));
      modes.put(PtyMode.OCRNL,getFlag(attributes,OutputFlag.OCRNL));
      modes.put(PtyMode.ONOCR,getFlag(attributes,OutputFlag.ONOCR));
      modes.put(PtyMode.ONLRET,getFlag(attributes,OutputFlag.ONLRET));
      shell.setPtyModes(modes);
      shell.setPtyColumns(terminal.getWidth());
      shell.setPtyLines(terminal.getHeight());
      shell.setAgentForwarding(true);
      String ctype=System.getenv("String_Node_Str");
      if (ctype == null) {
        ctype=Locale.getDefault().toString() + "String_Node_Str" + System.getProperty("String_Node_Str",Charset.defaultCharset().name());
      }
      shell.setEnv("String_Node_Str",ctype);
    }
    channel.setOut(outputStream);
    channel.setErr(outputStream);
    channel.open().verify();
    if (channel instanceof PtyCapableChannelSession) {
      registerSignalHandler(terminal,(PtyCapableChannelSession)channel);
    }
    channel.waitFor(EnumSet.of(ClientChannelEvent.CLOSED),0);
    if (channel.getExitStatus() != null) {
      exitStatus=channel.getExitStatus();
    }
  }
  finally {
    terminal.setAttributes(attributes);
    outputStream.close();
    inputStream.close();
  }
}

Fixed version (ground truth):
public void connect(String[] args) throws Exception {
  ClientConfig config=new ClientConfig(args);
  SimpleLogger.setLevel(config.getLevel());
  if (config.getFile() != null) {
    StringBuilder sb=new StringBuilder();
    sb.setLength(0);
    try (Reader reader=new BufferedReader(new InputStreamReader(new FileInputStream(config.getFile())))){
      for (int c=reader.read(); c >= 0; c=reader.read()) {
        sb.append((char)c);
      }
    }
     config.setCommand(sb.toString());
  }
 else   if (config.isBatch()) {
    StringBuilder sb=new StringBuilder();
    sb.setLength(0);
    Reader reader=new BufferedReader(new InputStreamReader(System.in));
    for (int c=reader.read(); c >= 0; c=reader.read()) {
      sb.append((char)c);
    }
    config.setCommand(sb.toString());
  }
  SshClient client=ClientBuilder.builder().build();
  final Console console=System.console();
  if (console != null) {
    client.setUserInteraction(new UserInteraction(){
      @Override public void welcome(      ClientSession s,      String banner,      String lang){
        System.err.println(banner);
      }
      @Override public String[] interactive(      ClientSession s,      String name,      String instruction,      String lang,      String[] prompt,      boolean[] echo){
        String[] answers=new String[prompt.length];
        try {
          for (int i=0; i < prompt.length; i++) {
            if (echo[i]) {
              answers[i]=console.readLine(prompt[i] + "String_Node_Str");
            }
 else {
              answers[i]=new String(console.readPassword(prompt[i] + "String_Node_Str"));
            }
            if (answers[i] == null) {
              return null;
            }
          }
          return answers;
        }
 catch (        IOError e) {
          return null;
        }
      }
      @Override public boolean isInteractionAllowed(      ClientSession session){
        return true;
      }
      @Override public void serverVersionInfo(      ClientSession session,      List<String> lines){
      }
      @Override public String getUpdatedPassword(      ClientSession session,      String prompt,      String lang){
        return null;
      }
    }
);
  }
  client.start();
  ClientSession session=connectWithRetries(client,config);
  if (config.getPassword() != null) {
    session.addPasswordIdentity(config.getPassword());
  }
  session.auth().verify();
  int exitStatus=0;
  Terminal terminal=TerminalBuilder.terminal();
  Attributes attributes=terminal.enterRawMode();
  IOConsoleOutputStream outputStream=RuntimeConsoleUtil.getOutputStream();
  try {
    ClientChannel channel;
    if (config.getCommand().length() > 0) {
      channel=session.createChannel("String_Node_Str",config.getCommand() + "String_Node_Str");
      channel.setIn(new ByteArrayInputStream(new byte[0]));
    }
 else {
      ChannelShell shell=session.createShellChannel();
      channel=shell;
      channel.setIn(new NoCloseInputStream(inputStream));
      Map<PtyMode,Integer> modes=new HashMap<>();
      modes.put(PtyMode.VINTR,attributes.getControlChar(ControlChar.VINTR));
      modes.put(PtyMode.VQUIT,attributes.getControlChar(ControlChar.VQUIT));
      modes.put(PtyMode.VERASE,attributes.getControlChar(ControlChar.VERASE));
      modes.put(PtyMode.VKILL,attributes.getControlChar(ControlChar.VKILL));
      modes.put(PtyMode.VEOF,attributes.getControlChar(ControlChar.VEOF));
      modes.put(PtyMode.VEOL,attributes.getControlChar(ControlChar.VEOL));
      modes.put(PtyMode.VEOL2,attributes.getControlChar(ControlChar.VEOL2));
      modes.put(PtyMode.VSTART,attributes.getControlChar(ControlChar.VSTART));
      modes.put(PtyMode.VSTOP,attributes.getControlChar(ControlChar.VSTOP));
      modes.put(PtyMode.VSUSP,attributes.getControlChar(ControlChar.VSUSP));
      modes.put(PtyMode.VDSUSP,attributes.getControlChar(ControlChar.VDSUSP));
      modes.put(PtyMode.VREPRINT,attributes.getControlChar(ControlChar.VREPRINT));
      modes.put(PtyMode.VWERASE,attributes.getControlChar(ControlChar.VWERASE));
      modes.put(PtyMode.VLNEXT,attributes.getControlChar(ControlChar.VLNEXT));
      modes.put(PtyMode.VSTATUS,attributes.getControlChar(ControlChar.VSTATUS));
      modes.put(PtyMode.VDISCARD,attributes.getControlChar(ControlChar.VDISCARD));
      modes.put(PtyMode.IGNPAR,getFlag(attributes,InputFlag.IGNPAR));
      modes.put(PtyMode.PARMRK,getFlag(attributes,InputFlag.PARMRK));
      modes.put(PtyMode.INPCK,getFlag(attributes,InputFlag.INPCK));
      modes.put(PtyMode.ISTRIP,getFlag(attributes,InputFlag.ISTRIP));
      modes.put(PtyMode.INLCR,getFlag(attributes,InputFlag.INLCR));
      modes.put(PtyMode.IGNCR,getFlag(attributes,InputFlag.IGNCR));
      modes.put(PtyMode.ICRNL,getFlag(attributes,InputFlag.ICRNL));
      modes.put(PtyMode.IXON,getFlag(attributes,InputFlag.IXON));
      modes.put(PtyMode.IXANY,getFlag(attributes,InputFlag.IXANY));
      modes.put(PtyMode.IXOFF,getFlag(attributes,InputFlag.IXOFF));
      modes.put(PtyMode.ISIG,getFlag(attributes,LocalFlag.ISIG));
      modes.put(PtyMode.ICANON,getFlag(attributes,LocalFlag.ICANON));
      modes.put(PtyMode.ECHO,getFlag(attributes,LocalFlag.ECHO));
      modes.put(PtyMode.ECHOE,getFlag(attributes,LocalFlag.ECHOE));
      modes.put(PtyMode.ECHOK,getFlag(attributes,LocalFlag.ECHOK));
      modes.put(PtyMode.ECHONL,getFlag(attributes,LocalFlag.ECHONL));
      modes.put(PtyMode.NOFLSH,getFlag(attributes,LocalFlag.NOFLSH));
      modes.put(PtyMode.TOSTOP,getFlag(attributes,LocalFlag.TOSTOP));
      modes.put(PtyMode.IEXTEN,getFlag(attributes,LocalFlag.IEXTEN));
      modes.put(PtyMode.OPOST,getFlag(attributes,OutputFlag.OPOST));
      modes.put(PtyMode.ONLCR,getFlag(attributes,OutputFlag.ONLCR));
      modes.put(PtyMode.OCRNL,getFlag(attributes,OutputFlag.OCRNL));
      modes.put(PtyMode.ONOCR,getFlag(attributes,OutputFlag.ONOCR));
      modes.put(PtyMode.ONLRET,getFlag(attributes,OutputFlag.ONLRET));
      shell.setPtyModes(modes);
      shell.setPtyColumns(terminal.getWidth());
      shell.setPtyLines(terminal.getHeight());
      shell.setAgentForwarding(true);
      String ctype=System.getenv("String_Node_Str");
      if (ctype == null) {
        ctype=Locale.getDefault().toString() + "String_Node_Str" + System.getProperty("String_Node_Str",Charset.defaultCharset().name());
      }
      shell.setEnv("String_Node_Str",ctype);
    }
    channel.setOut(outputStream);
    channel.setErr(outputStream);
    channel.open().verify();
    if (channel instanceof PtyCapableChannelSession) {
      registerSignalHandler(terminal,(PtyCapableChannelSession)channel);
    }
    channel.waitFor(EnumSet.of(ClientChannelEvent.CLOSED),0);
    if (channel.getExitStatus() != null) {
      exitStatus=channel.getExitStatus();
    }
  }
  finally {
    terminal.setAttributes(attributes);
    outputStream.close();
    inputStream.close();
  }
}