private String getIntegerInput(String prompt) {
boolean valid = false; // indicates if the name has be retrieved
String playersInput = null;
Scanner keyboard = new Scanner(System.in); // keyboard input stream
while (!valid) { // while a valid name has not been retrieved
// prompt for the player's choice
this.console.println(prompt);
// get the selection from the keyboard and trim off the blanks CAPs ok
playersInput = keyboard.nextLine();
playersInput = playersInput.trim();
char ch = playersInput.charAt(0);
// if the selection is invlaid (less than one characters in length)
if (!Character.isDigit(ch)) {
this.console.println("Please enter a positive integer.");
continue; // and repeat again
}
break; // out of the (exit) the repetition
}
return playersInput; // return the name
}
public static boolean isValidPassword(String password) {
if (password.length() < 8) // ukoliko password nema 8 karaktera vracamo
// gresku tj invalid password
return false;
int counter = 0;
for (int i = 0; i < password.length(); i++) // prolazimo kroz sve
// karaktere unosa
{
if (!Character.isLetterOrDigit(password.charAt(i))) // ukoliko se u
// unosu ne
// nalaze slova
// opet vracamo
// invalid
// password
{
return false;
}
if (Character.isDigit(password.charAt(i))) // provjeravamo brojeve i
// ukoliko ih ima
// brojimo ih
{
counter++;
}
}
if (counter >= 2) { // ukoliko ih ima vise od 2 uslov za validan
// password je ispunjen vracamo tru za printanje
System.out.println(" Valid password");
return true;
} else {
System.out.println(" Invalid password");
return false;
}
}
public void run() {
CConn cc = null;
Socket sock = null;
if (listenMode.getValue()) {
int port = 5500;
ServerSocket listener = null;
if (vncServerName.getValue() != null && Character.isDigit(vncServerName.getValue().charAt(0)))
port = Integer.parseInt(vncServerName.getValue());
try {
listener = new ServerSocket(port);
} catch (IOException e) {
System.out.println("Could not listen on port: " + port);
System.exit(-1);
}
vlog.info("Listening on port " + port);
try {
sock = listener.accept();
listener.close();
} catch (IOException e) {
System.out.println("Accept failed: " + port);
System.exit(-1);
}
}
try {
cc = new CConn(this, sock, vncServerName.getValue(), false);
while (true) cc.processMsg();
} catch (EndOfStream e) {
vlog.info(e.toString());
} catch (java.lang.Exception e) {
if (cc != null) cc.deleteWindow();
if (cc == null || !cc.shuttingDown) {
e.printStackTrace();
JOptionPane.showMessageDialog(
null, e.toString(), "VNC Viewer : Error", JOptionPane.ERROR_MESSAGE);
}
}
if (cc != null) cc.deleteWindow();
nViewers--;
if (!applet && nViewers == 0) {
System.exit(0);
}
}
public static boolean isPrintable(char c) {
if (Character.isJavaIdentifierStart(c)) {
// Letters and $ _
return true;
}
if (Character.isDigit(c)) {
return true;
}
switch (Character.getType(c)) {
case Character.MODIFIER_SYMBOL:
return true; // ` ^
case Character.DASH_PUNCTUATION:
return true; // -
case Character.MATH_SYMBOL:
return true; // = ~ + | < >
case Character.OTHER_PUNCTUATION:
return true; // !@#%&*;':",./?
case Character.START_PUNCTUATION:
return true; // ( [ {
case Character.END_PUNCTUATION:
return true; // ) ] }
}
return false;
}
public void write(char ch) throws IOException {
boolean ok;
switch (state) {
case S_text:
if (ch == '\n' || ch == '\r') {
break; // unadorned newlines are ignored
} else if (ch == '{') {
if (currentCharacters.length() > 0) {
handleText(currentCharacters.toString());
currentCharacters = new StringBuffer();
}
level++;
begingroup();
} else if (ch == '}') {
if (currentCharacters.length() > 0) {
handleText(currentCharacters.toString());
currentCharacters = new StringBuffer();
}
if (level == 0) throw new IOException("Too many close-groups in RTF text");
endgroup();
level--;
} else if (ch == '\\') {
if (currentCharacters.length() > 0) {
handleText(currentCharacters.toString());
currentCharacters = new StringBuffer();
}
state = S_backslashed;
} else {
currentCharacters.append(ch);
}
break;
case S_backslashed:
if (ch == '\'') {
state = S_aftertick;
break;
}
if (!Character.isLetter(ch)) {
char newstring[] = new char[1];
newstring[0] = ch;
if (!handleKeyword(new String(newstring))) {
warning("Unknown keyword: " + newstring + " (" + (byte) ch + ")");
}
state = S_text;
pendingKeyword = null;
/* currentCharacters is already an empty stringBuffer */
break;
}
state = S_token;
/* FALL THROUGH */
case S_token:
if (Character.isLetter(ch)) {
currentCharacters.append(ch);
} else {
pendingKeyword = currentCharacters.toString();
currentCharacters = new StringBuffer();
// Parameter following?
if (Character.isDigit(ch) || (ch == '-')) {
state = S_parameter;
currentCharacters.append(ch);
} else {
ok = handleKeyword(pendingKeyword);
if (!ok) warning("Unknown keyword: " + pendingKeyword);
pendingKeyword = null;
state = S_text;
// Non-space delimiters get included in the text
if (!Character.isWhitespace(ch)) write(ch);
}
}
break;
case S_parameter:
if (Character.isDigit(ch)) {
currentCharacters.append(ch);
} else {
/* TODO: Test correct behavior of \bin keyword */
if (pendingKeyword.equals("bin")) {
/* magic layer-breaking kwd */
long parameter = Long.parseLong(currentCharacters.toString());
pendingKeyword = null;
state = S_inblob;
binaryBytesLeft = parameter;
if (binaryBytesLeft > Integer.MAX_VALUE)
binaryBuf = new ByteArrayOutputStream(Integer.MAX_VALUE);
else binaryBuf = new ByteArrayOutputStream((int) binaryBytesLeft);
savedSpecials = specialsTable;
specialsTable = allSpecialsTable;
break;
}
int parameter = Integer.parseInt(currentCharacters.toString());
ok = handleKeyword(pendingKeyword, parameter);
if (!ok)
warning("Unknown keyword: " + pendingKeyword + " (param " + currentCharacters + ")");
pendingKeyword = null;
currentCharacters = new StringBuffer();
state = S_text;
// Delimiters here are interpreted as text too
if (!Character.isWhitespace(ch)) write(ch);
}
break;
case S_aftertick:
if (Character.digit(ch, 16) == -1) state = S_text;
else {
pendingCharacter = Character.digit(ch, 16);
state = S_aftertickc;
}
break;
case S_aftertickc:
state = S_text;
if (Character.digit(ch, 16) != -1) {
pendingCharacter = pendingCharacter * 16 + Character.digit(ch, 16);
ch = translationTable[pendingCharacter];
if (ch != 0) handleText(ch);
}
break;
case S_inblob:
binaryBuf.write(ch);
binaryBytesLeft--;
if (binaryBytesLeft == 0) {
state = S_text;
specialsTable = savedSpecials;
savedSpecials = null;
handleBinaryBlob(binaryBuf.toByteArray());
binaryBuf = null;
}
}
}
