*
* The MIT License (MIT)
*
- * Copyright (C) 2016 Kevin Lamonte
+ * Copyright (C) 2019 Kevin Lamonte
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
import java.util.Map;
import java.util.TreeMap;
-import jexer.session.SessionInfo;
+import jexer.backend.SessionInfo;
import static jexer.net.TelnetSocket.*;
/**
* TelnetInputStream works with TelnetSocket to perform the telnet protocol.
*/
-public final class TelnetInputStream extends InputStream
- implements SessionInfo {
+public class TelnetInputStream extends InputStream implements SessionInfo {
+
+ // ------------------------------------------------------------------------
+ // Constants --------------------------------------------------------------
+ // ------------------------------------------------------------------------
+
+ // ------------------------------------------------------------------------
+ // Variables --------------------------------------------------------------
+ // ------------------------------------------------------------------------
/**
* The root TelnetSocket that has my telnet protocol state.
*/
private int readBufferStart;
+ /**
+ * User name.
+ */
+ private String username = "";
+
+ /**
+ * Language.
+ */
+ private String language = "en_US";
+
+ /**
+ * Text window width.
+ */
+ private int windowWidth = 80;
+
+ /**
+ * Text window height.
+ */
+ private int windowHeight = 24;
+
+ /**
+ * When true, the last read byte from the remote side was IAC.
+ */
+ private boolean iac = false;
+
+ /**
+ * When true, we are in the middle of a DO/DONT/WILL/WONT negotiation.
+ */
+ private boolean dowill = false;
+
+ /**
+ * The telnet option being negotiated.
+ */
+ private int dowillType = 0;
+
+ /**
+ * When true, we are waiting to see the end of the sub-negotiation
+ * sequence.
+ */
+ private boolean subnegEnd = false;
+
+ /**
+ * When true, the last byte read from the remote side was CR.
+ */
+ private boolean readCR = false;
+
+ /**
+ * The subnegotiation buffer.
+ */
+ private ArrayList<Byte> subnegBuffer;
+
+ // ------------------------------------------------------------------------
+ // Constructors -----------------------------------------------------------
+ // ------------------------------------------------------------------------
+
/**
* Package private constructor.
*
subnegBuffer = new ArrayList<Byte>();
}
- // SessionInfo interface --------------------------------------------------
-
- /**
- * User name.
- */
- private String username = "";
-
- /**
- * Language.
- */
- private String language = "en_US";
-
- /**
- * Text window width.
- */
- private int windowWidth = 80;
-
- /**
- * Text window height.
- */
- private int windowHeight = 24;
+ // ------------------------------------------------------------------------
+ // SessionInfo ------------------------------------------------------------
+ // ------------------------------------------------------------------------
/**
* Username getter.
// NOP
}
- // InputStream interface --------------------------------------------------
+ // ------------------------------------------------------------------------
+ // InputStream ------------------------------------------------------------
+ // ------------------------------------------------------------------------
/**
* Returns an estimate of the number of bytes that can be read (or
return n;
}
- // Telnet protocol --------------------------------------------------------
-
-
- /**
- * When true, the last read byte from the remote side was IAC.
- */
- private boolean iac = false;
-
- /**
- * When true, we are in the middle of a DO/DONT/WILL/WONT negotiation.
- */
- private boolean dowill = false;
-
- /**
- * The telnet option being negotiated.
- */
- private int dowillType = 0;
-
- /**
- * When true, we are waiting to see the end of the sub-negotiation
- * sequence.
- */
- private boolean subnegEnd = false;
-
- /**
- * When true, the last byte read from the remote side was CR.
- */
- private boolean readCR = false;
-
- /**
- * The subnegotiation buffer.
- */
- private ArrayList<Byte> subnegBuffer;
+ // ------------------------------------------------------------------------
+ // TelnetInputStream ------------------------------------------------------
+ // ------------------------------------------------------------------------
/**
* For debugging, return a descriptive string for this telnet option.
* fails to handle ESC as defined in RFC 1572.
*/
private void handleNewEnvironment() {
- Map<StringBuilder, StringBuilder> newEnv =
- new TreeMap<StringBuilder, StringBuilder>();
+ Map<String, String> newEnv = new TreeMap<String, String>();
EnvState state = EnvState.INIT;
StringBuilder name = new StringBuilder();
StringBuilder value = new StringBuilder();
- for (int i = 0; i < subnegBuffer.size(); i++) {
+ /*
+ System.err.printf("handleNewEnvironment() %d bytes\n",
+ subnegBuffer.size());
+ */
+
+ for (int i = 1; i < subnegBuffer.size(); i++) {
Byte b = subnegBuffer.get(i);
+ /*
+ System.err.printf(" b: %c %d 0x%02x\n", (char)b.byteValue(),
+ b, b);
+ */
switch (state) {
// VAR
state = EnvState.NAME;
if (value.length() > 0) {
- newEnv.put(name, value);
+ /*
+ System.err.printf("NAME: '%s' VALUE: '%s'\n",
+ name, value);
+ */
+ newEnv.put(name.toString(), value.toString());
}
name = new StringBuilder();
} else if (b == 3) {
// USERVAR
state = EnvState.NAME;
if (value.length() > 0) {
- newEnv.put(name, value);
+ /*
+ System.err.printf("NAME: '%s' VALUE: '%s'\n",
+ name, value);
+ */
+ newEnv.put(name.toString(), value.toString());
}
name = new StringBuilder();
} else {
}
if ((name.length() > 0) && (value.length() > 0)) {
- newEnv.put(name, value);
+ /*
+ System.err.printf("NAME: '%s' VALUE: '%s'\n", name, value);
+ */
+ newEnv.put(name.toString(), value.toString());
}
- for (StringBuilder key: newEnv.keySet()) {
+ for (String key: newEnv.keySet()) {
if (key.equals("LANG")) {
- language = newEnv.get(key).toString();
+ language = newEnv.get(key);
}
if (key.equals("LOGNAME")) {
- username = newEnv.get(key).toString();
+ username = newEnv.get(key);
}
if (key.equals("USER")) {
- username = newEnv.get(key).toString();
+ username = newEnv.get(key);
}
}
}
get(i).byteValue());
}
master.terminalType = terminalString.toString();
+ /*
+ System.err.printf("terminal type: '%s'\n",
+ master.terminalType);
+ */
}
break;
speedString.append((char)subnegBuffer.get(i).byteValue());
}
master.terminalSpeed = speedString.toString();
+ /*
+ System.err.printf("terminal speed: '%s'\n",
+ master.terminalSpeed);
+ */
}
break;
if (subnegBuffer.get(i) == (byte)TELNET_IAC) {
i++;
}
- windowWidth = subnegBuffer.get(i) * 256;
+ int width = subnegBuffer.get(i);
+ if (width < 0) {
+ width += 256;
+ }
+ windowWidth = width * 256;
i++;
if (subnegBuffer.get(i) == (byte)TELNET_IAC) {
i++;
}
- windowWidth += subnegBuffer.get(i);
+ width = subnegBuffer.get(i);
+ windowWidth += width;
+ if (width < 0) {
+ windowWidth += 256;
+ }
i++;
if (subnegBuffer.get(i) == (byte)TELNET_IAC) {
i++;
}
- windowHeight = subnegBuffer.get(i) * 256;
+ int height = subnegBuffer.get(i);
+ if (height < 0) {
+ height += 256;
+ }
+ windowHeight = height * 256;
i++;
if (subnegBuffer.get(i) == (byte)TELNET_IAC) {
i++;
}
- windowHeight += subnegBuffer.get(i);
+ height = subnegBuffer.get(i);
+ windowHeight += height;
+ if (height < 0) {
+ windowHeight += 256;
+ }
}
break;
return bufN;
}
-
}