org.wildfly.security.mechanism.digest.DigestQuote Maven / Gradle / Ivy
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* Copyright 2014 Red Hat, Inc., and individual contributors
* as indicated by the @author tags.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.wildfly.security.mechanism.digest;
import org.wildfly.common.bytes.ByteStringBuilder;
/**
* Utility class used to convert string to quoted strings
*
* @author Peter Skopek
*
*/
public class DigestQuote {
private static final char QUOTE = '\\';
private DigestQuote() {
}
private static boolean quoteNeeded(char ch) {
return
ch == '"' || // escape char
ch == QUOTE || // quote
ch == 127 || // DEL
// 0 <= ch <= 31 except CR, LF and TAB
(ch <= 31 && ch != 13 && ch != 10 && ch != 9);
}
/**
* Creates new String quoted by SASL rules.
*
* @param inputStr String to be quoted
* @return
*/
public static String quote(String inputStr) {
int len = inputStr.length();
StringBuilder sb = new StringBuilder(len);
for (int i = 0; i < len; i++) {
char ch = inputStr.charAt(i);
if (quoteNeeded(ch)) {
sb.append(QUOTE).append(ch);
}
else {
sb.append(ch);
}
}
return sb.toString();
}
public static byte[] quote(byte[] input) {
ByteStringBuilder bsb = new ByteStringBuilder();
for (int i = 0; i < input.length; i++) {
if (quoteNeeded((char)input[i])) {
bsb.append(QUOTE);
bsb.append(input, i, 1);
}
else {
bsb.append(input, i, 1);
}
}
return bsb.toArray();
}
}