/**
* Reads the next token name from the attribute syntax definition, skipping over any leading or
* trailing spaces, and appends it to the provided buffer.
*
* @param valueStr The string representation of the attribute syntax definition.
* @param tokenName The buffer into which the token name will be written.
* @param startPos The position in the provided string at which to start reading the token name.
* @return The position of the first character that is not part of the token name or one of the
* trailing spaces after it.
* @throws DirectoryException If a problem is encountered while reading the token name.
*/
private static int readTokenName(String valueStr, StringBuilder tokenName, int startPos)
throws DirectoryException {
// Skip over any spaces at the beginning of the value.
char c = '\u0000';
int length = valueStr.length();
while ((startPos < length) && ((c = valueStr.charAt(startPos)) == ' ')) {
startPos++;
}
if (startPos >= length) {
Message message = ERR_ATTR_SYNTAX_LDAPSYNTAX_TRUNCATED_VALUE.get(valueStr);
throw new DirectoryException(ResultCode.INVALID_ATTRIBUTE_SYNTAX, message);
}
// Read until we find the next space.
while ((startPos < length) && ((c = valueStr.charAt(startPos++)) != ' ')) {
tokenName.append(c);
}
// Skip over any trailing spaces after the value.
while ((startPos < length) && ((c = valueStr.charAt(startPos)) == ' ')) {
startPos++;
}
// Return the position of the first non-space character after the token.
return startPos;
}
/**
* Reads the value of a string enclosed in single quotes, skipping over the quotes and any leading
* or trailing spaces, and appending the string to the provided buffer.
*
* @param valueStr The user-provided representation of the attribute type definition.
* @param valueBuffer The buffer into which the user-provided representation of the value will be
* placed.
* @param startPos The position in the provided string at which to start reading the quoted
* string.
* @return The position of the first character that is not part of the quoted string or one of the
* trailing spaces after it.
* @throws DirectoryException If a problem is encountered while reading the quoted string.
*/
private static int readQuotedString(String valueStr, StringBuilder valueBuffer, int startPos)
throws DirectoryException {
// Skip over any spaces at the beginning of the value.
char c = '\u0000';
int length = valueStr.length();
while ((startPos < length) && ((c = valueStr.charAt(startPos)) == ' ')) {
startPos++;
}
if (startPos >= length) {
Message message = ERR_ATTR_SYNTAX_LDAPSYNTAX_TRUNCATED_VALUE.get(valueStr);
throw new DirectoryException(ResultCode.INVALID_ATTRIBUTE_SYNTAX, message);
}
// The next character must be a single quote.
if (c != '\'') {
Message message =
ERR_ATTR_SYNTAX_LDAPSYNTAX_EXPECTED_QUOTE_AT_POS.get(
valueStr, startPos, String.valueOf(c));
throw new DirectoryException(ResultCode.INVALID_ATTRIBUTE_SYNTAX, message);
}
// Read until we find the closing quote.
startPos++;
while ((startPos < length) && ((c = valueStr.charAt(startPos)) != '\'')) {
valueBuffer.append(c);
startPos++;
}
// Skip over any trailing spaces after the value.
startPos++;
while ((startPos < length) && ((c = valueStr.charAt(startPos)) == ' ')) {
startPos++;
}
// If we're at the end of the value, then that's illegal.
if (startPos >= length) {
Message message = ERR_ATTR_SYNTAX_LDAPSYNTAX_TRUNCATED_VALUE.get(valueStr);
throw new DirectoryException(ResultCode.INVALID_ATTRIBUTE_SYNTAX, message);
}
// Return the position of the first non-space character after the token.
return startPos;
}
/**
* Reads the value for an "extra" parameter. It will handle a single unquoted word (which is
* technically illegal, but we'll allow it), a single quoted string, or an open parenthesis
* followed by a space-delimited set of quoted strings or unquoted words followed by a close
* parenthesis.
*
* @param valueStr The string containing the information to be read.
* @param valueList The list of "extra" parameter values read so far.
* @param startPos The position in the value string at which to start reading.
* @return The "extra" parameter value that was read.
* @throws DirectoryException If a problem occurs while attempting to read the value.
*/
private static int readExtraParameterValues(String valueStr, List<String> valueList, int startPos)
throws DirectoryException {
// Skip over any leading spaces.
int length = valueStr.length();
char c = '\u0000';
while ((startPos < length) && ((c = valueStr.charAt(startPos)) == ' ')) {
startPos++;
}
if (startPos >= length) {
Message message = ERR_ATTR_SYNTAX_LDAPSYNTAX_TRUNCATED_VALUE.get(valueStr);
throw new DirectoryException(ResultCode.INVALID_ATTRIBUTE_SYNTAX, message);
}
// Look at the next character. If it is a quote, then parse until the next
// quote and end. If it is an open parenthesis, then parse individual
// values until the close parenthesis and end. Otherwise, parse until the
// next space and end.
if (c == '\'') {
// Parse until the closing quote.
StringBuilder valueBuffer = new StringBuilder();
startPos++;
while ((startPos < length) && ((c = valueStr.charAt(startPos)) != '\'')) {
valueBuffer.append(c);
startPos++;
}
startPos++;
valueList.add(valueBuffer.toString());
} else if (c == '(') {
startPos++;
// We're expecting a list of values. Quoted, space separated.
while (true) {
// Skip over any leading spaces;
while ((startPos < length) && ((c = valueStr.charAt(startPos)) == ' ')) {
startPos++;
}
if (startPos >= length) {
Message message = ERR_ATTR_SYNTAX_LDAPSYNTAX_TRUNCATED_VALUE.get(valueStr);
throw new DirectoryException(ResultCode.INVALID_ATTRIBUTE_SYNTAX, message);
}
if (c == ')') {
// This is the end of the list.
startPos++;
break;
} else if (c == '(') {
// This is an illegal character.
Message message =
ERR_ATTR_SYNTAX_LDAPSYNTAX_EXTENSION_INVALID_CHARACTER.get(valueStr, startPos);
throw new DirectoryException(ResultCode.INVALID_ATTRIBUTE_SYNTAX, message);
} else if (c == '\'') {
// We have a quoted string
StringBuilder valueBuffer = new StringBuilder();
startPos++;
while ((startPos < length) && ((c = valueStr.charAt(startPos)) != '\'')) {
valueBuffer.append(c);
startPos++;
}
valueList.add(valueBuffer.toString());
startPos++;
} else {
// Consider unquoted string
StringBuilder valueBuffer = new StringBuilder();
while ((startPos < length) && ((c = valueStr.charAt(startPos)) != ' ')) {
valueBuffer.append(c);
startPos++;
}
valueList.add(valueBuffer.toString());
}
if (startPos >= length) {
Message message = ERR_ATTR_SYNTAX_LDAPSYNTAX_TRUNCATED_VALUE.get(valueStr);
throw new DirectoryException(ResultCode.INVALID_ATTRIBUTE_SYNTAX, message);
}
}
} else {
// Parse until the next space.
StringBuilder valueBuffer = new StringBuilder();
while ((startPos < length) && ((c = valueStr.charAt(startPos)) != ' ')) {
valueBuffer.append(c);
startPos++;
}
valueList.add(valueBuffer.toString());
}
// Skip over any trailing spaces.
while ((startPos < length) && (valueStr.charAt(startPos) == ' ')) {
startPos++;
}
if (startPos >= length) {
Message message = ERR_ATTR_SYNTAX_LDAPSYNTAX_TRUNCATED_VALUE.get(valueStr);
throw new DirectoryException(ResultCode.INVALID_ATTRIBUTE_SYNTAX, message);
}
return startPos;
}
