spring security Saml2Utils 源码
spring security Saml2Utils 代码
文件路径：/saml2/saml2-service-provider/src/main/java/org/springframework/security/saml2/provider/service/web/authentication/Saml2Utils.java
/*
* Copyright 2002-2022 the original author or authors.
*
* 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
*
* https://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.springframework.security.saml2.provider.service.web.authentication;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.util.Base64;
import java.util.zip.Deflater;
import java.util.zip.DeflaterOutputStream;
import java.util.zip.Inflater;
import java.util.zip.InflaterOutputStream;
import org.springframework.security.saml2.Saml2Exception;
/**
* Utility methods for working with serialized SAML messages.
*
* For internal use only.
*
* @author Josh Cummings
*/
final class Saml2Utils {
private Saml2Utils() {
}
static String samlEncode(byte[] b) {
return Base64.getEncoder().encodeToString(b);
}
static byte[] samlDecode(String s) {
return Base64.getMimeDecoder().decode(s);
}
static byte[] samlDeflate(String s) {
try {
ByteArrayOutputStream b = new ByteArrayOutputStream();
DeflaterOutputStream deflater = new DeflaterOutputStream(b, new Deflater(Deflater.DEFLATED, true));
deflater.write(s.getBytes(StandardCharsets.UTF_8));
deflater.finish();
return b.toByteArray();
}
catch (IOException ex) {
throw new Saml2Exception("Unable to deflate string", ex);
}
}
static String samlInflate(byte[] b) {
try {
ByteArrayOutputStream out = new ByteArrayOutputStream();
InflaterOutputStream iout = new InflaterOutputStream(out, new Inflater(true));
iout.write(b);
iout.finish();
return new String(out.toByteArray(), StandardCharsets.UTF_8);
}
catch (IOException ex) {
throw new Saml2Exception("Unable to inflate string", ex);
}
}
}
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