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view src/org/eclipse/jetty/util/security/Credential.java @ 1070:a44fc6b53757
fix use of HttpGenerator._buffer
author | Franklin Schmidt <fschmidt@gmail.com> |
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date | Thu, 10 Nov 2016 01:23:37 -0700 |
parents | 8e9db0bbf4f9 |
children |
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// // ======================================================================== // Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd. // ------------------------------------------------------------------------ // All rights reserved. This program and the accompanying materials // are made available under the terms of the Eclipse Public License v1.0 // and Apache License v2.0 which accompanies this distribution. // // The Eclipse Public License is available at // http://www.eclipse.org/legal/epl-v10.html // // The Apache License v2.0 is available at // http://www.opensource.org/licenses/apache2.0.php // // You may elect to redistribute this code under either of these licenses. // ======================================================================== // package org.eclipse.jetty.util.security; import java.io.Serializable; import java.security.MessageDigest; import org.eclipse.jetty.util.StringUtil; import org.eclipse.jetty.util.TypeUtil; import org.slf4j.Logger; import org.slf4j.LoggerFactory; /* ------------------------------------------------------------ */ /** * Credentials. The Credential class represents an abstract mechanism for * checking authentication credentials. A credential instance either represents * a secret, or some data that could only be derived from knowing the secret. * <p> * Often a Credential is related to a Password via a one way algorithm, so while * a Password itself is a Credential, a UnixCrypt or MD5 digest of a a password * is only a credential that can be checked against the password. * <p> * This class includes an implementation for unix Crypt an MD5 digest. * * @see Password * */ public abstract class Credential implements Serializable { private static final Logger LOG = LoggerFactory.getLogger(Credential.class); private static final long serialVersionUID = -7760551052768181572L; /* ------------------------------------------------------------ */ /** * Check a credential * * @param credentials The credential to check against. This may either be * another Credential object, a Password object or a String * which is interpreted by this credential. * @return True if the credentials indicated that the shared secret is known * to both this Credential and the passed credential. */ public abstract boolean check(Object credentials); /* ------------------------------------------------------------ */ /** * Get a credential from a String. If the credential String starts with a * known Credential type (eg "CRYPT:" or "MD5:" ) then a Credential of that * type is returned. Else the credential is assumed to be a Password. * * @param credential String representation of the credential * @return A Credential or Password instance. */ public static Credential getCredential(String credential) { if (credential.startsWith(Crypt.__TYPE)) return new Crypt(credential); if (credential.startsWith(MD5.__TYPE)) return new MD5(credential); return new Password(credential); } /* ------------------------------------------------------------ */ /** * Unix Crypt Credentials */ public static class Crypt extends Credential { private static final long serialVersionUID = -2027792997664744210L; public static final String __TYPE = "CRYPT:"; private final String _cooked; Crypt(String cooked) { _cooked = cooked.startsWith(Crypt.__TYPE) ? cooked.substring(__TYPE.length()) : cooked; } @Override public boolean check(Object credentials) { if (credentials instanceof char[]) credentials=new String((char[])credentials); if (!(credentials instanceof String) && !(credentials instanceof Password)) LOG.warn("Can't check " + credentials.getClass() + " against CRYPT"); String passwd = credentials.toString(); return _cooked.equals(UnixCrypt.crypt(passwd, _cooked)); } public static String crypt(String user, String pw) { return "CRYPT:" + UnixCrypt.crypt(pw, user); } } /* ------------------------------------------------------------ */ /** * MD5 Credentials */ public static class MD5 extends Credential { private static final long serialVersionUID = 5533846540822684240L; public static final String __TYPE = "MD5:"; public static final Object __md5Lock = new Object(); private static MessageDigest __md; private final byte[] _digest; /* ------------------------------------------------------------ */ MD5(String digest) { digest = digest.startsWith(__TYPE) ? digest.substring(__TYPE.length()) : digest; _digest = TypeUtil.parseBytes(digest, 16); } /* ------------------------------------------------------------ */ public byte[] getDigest() { return _digest; } /* ------------------------------------------------------------ */ @Override public boolean check(Object credentials) { try { byte[] digest = null; if (credentials instanceof char[]) credentials=new String((char[])credentials); if (credentials instanceof Password || credentials instanceof String) { synchronized (__md5Lock) { if (__md == null) __md = MessageDigest.getInstance("MD5"); __md.reset(); __md.update(credentials.toString().getBytes(StringUtil.__ISO_8859_1)); digest = __md.digest(); } if (digest == null || digest.length != _digest.length) return false; for (int i = 0; i < digest.length; i++) if (digest[i] != _digest[i]) return false; return true; } else if (credentials instanceof MD5) { MD5 md5 = (MD5) credentials; if (_digest.length != md5._digest.length) return false; for (int i = 0; i < _digest.length; i++) if (_digest[i] != md5._digest[i]) return false; return true; } else if (credentials instanceof Credential) { // Allow credential to attempt check - i.e. this'll work // for DigestAuthModule$Digest credentials return ((Credential) credentials).check(this); } else { LOG.warn("Can't check " + credentials.getClass() + " against MD5"); return false; } } catch (Exception e) { LOG.warn("",e); return false; } } /* ------------------------------------------------------------ */ public static String digest(String password) { try { byte[] digest; synchronized (__md5Lock) { if (__md == null) { try { __md = MessageDigest.getInstance("MD5"); } catch (Exception e) { LOG.warn("",e); return null; } } __md.reset(); __md.update(password.getBytes(StringUtil.__ISO_8859_1)); digest = __md.digest(); } return __TYPE + TypeUtil.toString(digest, 16); } catch (Exception e) { LOG.warn("",e); return null; } } } }