Esempio n. 1
0
  public PacketNewKeys(byte payload[], int off, int len) throws IOException {
    this.payload = new byte[len];
    System.arraycopy(payload, off, this.payload, 0, len);

    TypesReader tr = new TypesReader(payload, off, len);

    int packet_type = tr.readByte();

    if (packet_type != Packets.SSH_MSG_NEWKEYS)
      throw new IOException("This is not a SSH_MSG_NEWKEYS! (" + packet_type + ")");

    if (tr.remain() != 0) throw new IOException("Padding in SSH_MSG_NEWKEYS packet!");
  }
  public PacketKexDHInit(byte payload[]) throws IOException {
    this.payload = payload;

    TypesReader tr = new TypesReader(payload);

    int packet_type = tr.readByte();

    if (packet_type != Packets.SSH_MSG_KEXDH_INIT) {
      throw new PacketTypeException(packet_type);
    }

    e = tr.readMPINT();

    if (tr.remain() != 0) {
      throw new PacketFormatException(
          String.format("Padding in %s", Packets.getMessageName(packet_type)));
    }
  }
  public PacketUserauthFailure(byte payload[]) throws IOException {
    this.payload = payload;

    TypesReader tr = new TypesReader(payload);

    int packet_type = tr.readByte();

    if (packet_type != Packets.SSH_MSG_USERAUTH_FAILURE) {
      throw new PacketTypeException(packet_type);
    }
    authThatCanContinue = new HashSet<String>(Arrays.asList(tr.readNameList()));
    partialSuccess = tr.readBoolean();

    if (tr.remain() != 0) {
      throw new PacketFormatException(
          String.format("Padding in %s", Packets.getMessageName(packet_type)));
    }
  }
  public void msgChannelRequest(byte[] msg, int msglen) throws IOException {
    TypesReader tr = new TypesReader(msg, 0, msglen);

    tr.readByte(); // skip packet type
    int id = tr.readUINT32();

    Channel c = getChannel(id);

    if (c == null)
      throw new IOException(
          "Unexpected SSH_MSG_CHANNEL_REQUEST message for non-existent channel " + id);

    ServerSessionImpl server_session = null;

    if (server_state != null) {
      synchronized (c) {
        server_session = c.ss;
      }
    }

    String type = tr.readString("US-ASCII");
    boolean wantReply = tr.readBoolean();

    log.debug("Got SSH_MSG_CHANNEL_REQUEST (channel " + id + ", '" + type + "')");

    if (type.equals("exit-status")) {
      if (wantReply != false)
        throw new IOException(
            "Badly formatted SSH_MSG_CHANNEL_REQUEST exit-status message, 'want reply' is true");

      int exit_status = tr.readUINT32();

      if (tr.remain() != 0)
        throw new IOException("Badly formatted SSH_MSG_CHANNEL_REQUEST message");

      synchronized (c) {
        c.exit_status = new Integer(exit_status);
        c.notifyAll();
      }

      log.debug("Got EXIT STATUS (channel " + id + ", status " + exit_status + ")");

      return;
    }

    if ((server_state == null) && (type.equals("exit-signal"))) {
      if (wantReply != false)
        throw new IOException(
            "Badly formatted SSH_MSG_CHANNEL_REQUEST exit-signal message, 'want reply' is true");

      String signame = tr.readString("US-ASCII");
      tr.readBoolean();
      tr.readString();
      tr.readString();

      if (tr.remain() != 0)
        throw new IOException("Badly formatted SSH_MSG_CHANNEL_REQUEST message");

      synchronized (c) {
        c.exit_signal = signame;
        c.notifyAll();
      }

      log.debug("Got EXIT SIGNAL (channel " + id + ", signal " + signame + ")");

      return;
    }

    if ((server_session != null) && (type.equals("pty-req"))) {
      PtySettings pty = new PtySettings();

      pty.term = tr.readString();
      pty.term_width_characters = tr.readUINT32();
      pty.term_height_characters = tr.readUINT32();
      pty.term_width_pixels = tr.readUINT32();
      pty.term_height_pixels = tr.readUINT32();
      pty.terminal_modes = tr.readByteString();

      if (tr.remain() != 0)
        throw new IOException("Badly formatted SSH_MSG_CHANNEL_REQUEST message");

      Runnable run_after_sending_success = null;

      ServerSessionCallback sscb = server_session.getServerSessionCallback();

      if (sscb != null) run_after_sending_success = sscb.requestPtyReq(server_session, pty);

      if (wantReply) {
        if (run_after_sending_success != null) {
          tm.sendAsynchronousMessage(new PacketChannelSuccess(c.remoteID).getPayload());
        } else {
          tm.sendAsynchronousMessage(new PacketChannelFailure(c.remoteID).getPayload());
        }
      }

      if (run_after_sending_success != null) {
        runAsync(run_after_sending_success);
      }

      return;
    }

    if ((server_session != null) && (type.equals("shell"))) {
      if (tr.remain() != 0)
        throw new IOException("Badly formatted SSH_MSG_CHANNEL_REQUEST message");

      Runnable run_after_sending_success = null;
      ServerSessionCallback sscb = server_session.getServerSessionCallback();

      if (sscb != null) run_after_sending_success = sscb.requestShell(server_session);

      if (wantReply) {
        if (run_after_sending_success != null) {
          tm.sendAsynchronousMessage(new PacketChannelSuccess(c.remoteID).getPayload());
        } else {
          tm.sendAsynchronousMessage(new PacketChannelFailure(c.remoteID).getPayload());
        }
      }

      if (run_after_sending_success != null) {
        runAsync(run_after_sending_success);
      }

      return;
    }

    if ((server_session != null) && (type.equals("exec"))) {
      String command = tr.readString();

      if (tr.remain() != 0)
        throw new IOException("Badly formatted SSH_MSG_CHANNEL_REQUEST message");

      Runnable run_after_sending_success = null;
      ServerSessionCallback sscb = server_session.getServerSessionCallback();

      if (sscb != null) run_after_sending_success = sscb.requestExec(server_session, command);

      if (wantReply) {
        if (run_after_sending_success != null) {
          tm.sendAsynchronousMessage(new PacketChannelSuccess(c.remoteID).getPayload());
        } else {
          tm.sendAsynchronousMessage(new PacketChannelFailure(c.remoteID).getPayload());
        }
      }

      if (run_after_sending_success != null) {
        runAsync(run_after_sending_success);
      }

      return;
    }

    /* We simply ignore unknown channel requests, however, if the server wants a reply,
     * then we signal that we have no idea what it is about.
     */

    if (wantReply) {
      tm.sendAsynchronousMessage(new PacketChannelFailure(c.remoteID).getPayload());
    }

    log.debug("Channel request '" + type + "' is not known, ignoring it");
  }
Esempio n. 5
0
  public void msgChannelRequest(byte[] msg, int msglen) throws IOException {
    TypesReader tr = new TypesReader(msg, 0, msglen);

    tr.readByte(); // skip packet type
    int id = tr.readUINT32();

    Channel c = getChannel(id);

    if (c == null)
      throw new IOException(
          "Unexpected SSH_MSG_CHANNEL_REQUEST message for non-existent channel " + id);

    String type = tr.readString("US-ASCII");
    boolean wantReply = tr.readBoolean();

    log.debug("Got SSH_MSG_CHANNEL_REQUEST (channel " + id + ", '" + type + "')");

    if (type.equals("exit-status")) {
      if (wantReply != false)
        throw new IOException(
            "Badly formatted SSH_MSG_CHANNEL_REQUEST message, 'want reply' is true");

      int exit_status = tr.readUINT32();

      if (tr.remain() != 0)
        throw new IOException("Badly formatted SSH_MSG_CHANNEL_REQUEST message");

      synchronized (c) {
        c.exit_status = new Integer(exit_status);
        c.notifyAll();
      }

      log.debug("Got EXIT STATUS (channel " + id + ", status " + exit_status + ")");

      return;
    }

    if (type.equals("exit-signal")) {
      if (wantReply != false)
        throw new IOException(
            "Badly formatted SSH_MSG_CHANNEL_REQUEST message, 'want reply' is true");

      String signame = tr.readString("US-ASCII");
      tr.readBoolean();
      tr.readString();
      tr.readString();

      if (tr.remain() != 0)
        throw new IOException("Badly formatted SSH_MSG_CHANNEL_REQUEST message");

      synchronized (c) {
        c.exit_signal = signame;
        c.notifyAll();
      }

      log.debug("Got EXIT SIGNAL (channel " + id + ", signal " + signame + ")");

      return;
    }

    /* We simply ignore unknown channel requests, however, if the server wants a reply,
     * then we signal that we have no idea what it is about.
     */

    if (wantReply) {
      byte[] reply = new byte[5];

      reply[0] = Packets.SSH_MSG_CHANNEL_FAILURE;
      reply[1] = (byte) (c.remoteID >> 24);
      reply[2] = (byte) (c.remoteID >> 16);
      reply[3] = (byte) (c.remoteID >> 8);
      reply[4] = (byte) (c.remoteID);

      tm.sendAsynchronousMessage(reply);
    }

    log.debug("Channel request '" + type + "' is not known, ignoring it");
  }