/*
* Copyright 2016 Red Hat, Inc. and/or its affiliates
* and other 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.keycloak.saml.processing.web.util;
import org.keycloak.saml.common.PicketLinkLogger;
import org.keycloak.saml.common.PicketLinkLoggerFactory;
import org.keycloak.saml.common.constants.GeneralConstants;
import org.keycloak.saml.common.util.Base64;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
/**
* Utility for the HTTP/Post binding
*
* @author Anil.Saldhana@redhat.com
* @since May 22, 2009
*/
public class PostBindingUtil {
private static final PicketLinkLogger logger = PicketLinkLoggerFactory.getLogger();
/**
* Apply base64 encoding on the message
*
* @param stringToEncode
*
* @return
*/
public static String base64Encode(String stringToEncode) throws IOException {
return Base64.encodeBytes(stringToEncode.getBytes(GeneralConstants.SAML_CHARSET), Base64.DONT_BREAK_LINES);
}
/**
* Apply base64 decoding on the message and return the byte array
*
* @param encodedString
*
* @return
*/
public static byte[] base64Decode(String encodedString) {
if (encodedString == null)
throw logger.nullArgumentError("encodedString");
return Base64.decode(encodedString);
}
/**
* Apply base64 decoding on the message and return the stream
*
* @param encodedString
*
* @return
*/
public static InputStream base64DecodeAsStream(String encodedString) {
if (encodedString == null)
throw logger.nullArgumentError("encodedString");
return new ByteArrayInputStream(base64Decode(encodedString));
}
public static String escapeHTML(String toEscape) {
StringBuilder escaped = new StringBuilder();
for (int i = 0; i < toEscape.length(); i++) {
char chr = toEscape.charAt(i);
if (chr != '"' && chr != '<' && chr != '>') {
escaped.append(chr);
}
}
return escaped.toString();
}
}