Mercurial > dive4elements > river
annotate flys-client/src/main/java/de/intevation/flys/client/server/auth/was/Signature.java @ 4231:adcb8aee1910
Add debug info about GGInA session lease time
author | Björn Ricks <bjoern.ricks@intevation.de> |
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date | Tue, 23 Oct 2012 16:07:39 +0200 |
parents | 725470fc57d2 |
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1 package de.intevation.flys.client.server.auth.was; |
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2 |
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3 import java.io.ByteArrayInputStream; |
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4 import java.security.cert.Certificate; |
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5 import java.security.cert.CertificateException; |
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6 import java.security.cert.CertificateFactory; |
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7 |
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8 import org.apache.commons.codec.binary.Base64; |
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9 import org.apache.log4j.Logger; |
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10 import org.jdom.Element; |
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11 |
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12 public class Signature { |
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13 |
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14 private static Logger logger = Logger.getLogger(Signature.class); |
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15 |
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16 private static final String XML_SIG_DIGEST_SHA1 = |
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17 "http://www.w3.org/2000/09/xmldsig#sha1"; |
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18 private static final String XML_SIG_SIGNATURE_RSA_SHA1 = |
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19 "http://www.w3.org/2000/09/xmldsig#rsa-sha1"; |
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20 |
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21 private final Element signature; |
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22 private Certificate cert; |
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23 private byte[] value; |
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24 private byte[] digestvalue; |
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25 private String reference; |
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26 |
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27 public Signature(Element signature) { |
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28 this.signature = signature; |
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29 this.parseSignatureInfo(); |
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30 this.parseSignatureValue(); |
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31 this.parseCertificate(); |
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32 } |
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33 |
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34 private void parseSignatureInfo() { |
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35 Element signatureinfo = this.signature.getChild("SignedInfo", |
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36 Namespaces.XML_SIG_NS); |
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37 if (signatureinfo != null) { |
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38 Element signaturemethod = signatureinfo.getChild("SignatureMethod", |
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39 Namespaces.XML_SIG_NS); |
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40 String algorithm = signaturemethod.getAttributeValue("Algorithm"); |
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41 if (!algorithm.equals(XML_SIG_SIGNATURE_RSA_SHA1)) { |
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42 logger.warn("Unkown signature alorithm " + algorithm); |
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43 } |
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44 |
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45 // There could be several references in XML-Sig spec but for me it |
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46 // doesn't make sense to have more then one in a SAML Assertion |
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47 Element reference = signatureinfo.getChild("Reference", |
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48 Namespaces.XML_SIG_NS); |
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49 // reference must be present but its better to check |
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50 if (reference != null) { |
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51 String digestvalue = reference.getChildText("DigestValue", |
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52 Namespaces.XML_SIG_NS); |
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53 String digestmethod = reference.getChildText("DigestMethod", |
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54 Namespaces.XML_SIG_NS); |
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55 if (!digestmethod.equals(XML_SIG_DIGEST_SHA1)) { |
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56 logger.warn("Unknown digest method " + digestmethod); |
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57 } |
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58 this.digestvalue = Base64.decodeBase64(digestvalue); |
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59 |
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60 String referenceuri = reference.getAttributeValue("URI"); |
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61 if (referenceuri.startsWith("#")) { |
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62 this.reference = referenceuri.substring(1); |
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63 } |
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64 else { |
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65 logger.warn("Unkown reference type " + referenceuri); |
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66 this.reference = referenceuri; |
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67 } |
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68 } |
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69 } |
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70 } |
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71 |
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72 private void parseSignatureValue() { |
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73 String signaturevalue = this.signature.getChildText("SignatureValue", |
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74 Namespaces.XML_SIG_NS); |
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75 this.value = Base64.decodeBase64(signaturevalue); |
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76 } |
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77 |
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78 private void parseCertificate() { |
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79 Element keyinfo = this.signature.getChild("KeyInfo", |
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80 Namespaces.XML_SIG_NS); |
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81 if (keyinfo != null) { |
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82 Element data = keyinfo.getChild("X509Data", Namespaces.XML_SIG_NS); |
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83 if (data != null) { |
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84 String base64cert = data.getChildText("X509Certificate", |
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85 Namespaces.XML_SIG_NS); |
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86 if (base64cert != null) { |
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87 byte[] bytes = Base64.decodeBase64(base64cert); |
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88 try { |
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89 CertificateFactory cf = CertificateFactory.getInstance( |
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90 "X.509"); |
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91 this.cert = cf.generateCertificate( |
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92 new ByteArrayInputStream(bytes)); |
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93 } |
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94 catch(CertificateException e) { |
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95 // should never occur |
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96 logger.error(e); |
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97 } |
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98 } |
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99 } |
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100 } |
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101 } |
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102 |
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103 public Certificate getCertificate() { |
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104 return this.cert; |
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105 } |
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106 |
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107 public byte[] getValue() { |
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108 return this.value; |
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109 } |
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110 |
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111 public String getReference() { |
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112 // In theory there could be several references with digestvalues, ... |
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113 return this.reference; |
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114 } |
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115 |
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116 public byte[] getDigestValue() { |
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117 return this.digestvalue; |
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118 } |
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119 } |
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120 // vim: set si et fileencoding=utf-8 ts=4 sw=4 tw=80: |