52 * This definition reflects the Network Working Group RFC 4120 |
52 * This definition reflects the Network Working Group RFC 4120 |
53 * specification available at |
53 * specification available at |
54 * <a href="http://www.ietf.org/rfc/rfc4120.txt"> |
54 * <a href="http://www.ietf.org/rfc/rfc4120.txt"> |
55 * http://www.ietf.org/rfc/rfc4120.txt</a>. |
55 * http://www.ietf.org/rfc/rfc4120.txt</a>. |
56 */ |
56 */ |
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57 public class APReq { |
57 |
58 |
58 public class APReq { |
59 public int pvno; |
59 public int pvno; |
60 public int msgType; |
60 public int msgType; |
61 public APOptions apOptions; |
61 public APOptions apOptions; |
62 public Ticket ticket; |
62 public Ticket ticket; |
63 public EncryptedData authenticator; |
63 public EncryptedData authenticator; |
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64 |
64 |
65 public APReq( |
65 public APReq( |
66 APOptions new_apOptions, |
66 APOptions new_apOptions, |
67 Ticket new_ticket, |
67 Ticket new_ticket, |
68 EncryptedData new_authenticator |
68 EncryptedData new_authenticator) { |
69 ) { |
69 pvno = Krb5.PVNO; |
70 pvno = Krb5.PVNO; |
70 msgType = Krb5.KRB_AP_REQ; |
71 msgType = Krb5.KRB_AP_REQ; |
71 apOptions = new_apOptions; |
72 apOptions = new_apOptions; |
72 ticket = new_ticket; |
73 ticket = new_ticket; |
73 authenticator = new_authenticator; |
74 authenticator = new_authenticator; |
74 } |
75 } |
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76 |
75 |
77 public APReq(byte[] data) throws Asn1Exception,IOException, KrbApErrException, RealmException { |
76 public APReq(byte[] data) throws Asn1Exception, IOException, KrbApErrException, RealmException { |
78 init(new DerValue(data)); |
77 init(new DerValue(data)); |
79 } |
78 } |
80 |
79 |
81 public APReq(DerValue encoding) throws Asn1Exception, IOException, KrbApErrException, RealmException { |
80 public APReq(DerValue encoding) throws Asn1Exception, IOException, KrbApErrException, RealmException { |
82 init(encoding); |
81 init(encoding); |
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82 } |
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83 |
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84 /** |
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85 * Initializes an APReq object. |
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86 * @param encoding a single DER-encoded value. |
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87 * @exception Asn1Exception if an error occurs while decoding an ASN1 encoded data. |
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88 * @exception IOException if an I/O error occurs while reading encoded data. |
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89 * @exception KrbApErrException if the value read from the DER-encoded data stream does not match the pre-defined value. |
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90 * @exception RealmException if an error occurs while parsing a Realm object. |
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91 */ |
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92 private void init(DerValue encoding) throws Asn1Exception, |
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93 IOException, KrbApErrException, RealmException { |
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94 DerValue der, subDer; |
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95 if (((encoding.getTag() & (byte) 0x1F) != Krb5.KRB_AP_REQ) |
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96 || (encoding.isApplication() != true) |
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97 || (encoding.isConstructed() != true)) { |
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98 throw new Asn1Exception(Krb5.ASN1_BAD_ID); |
83 } |
99 } |
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100 der = encoding.getData().getDerValue(); |
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101 if (der.getTag() != DerValue.tag_Sequence) { |
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102 throw new Asn1Exception(Krb5.ASN1_BAD_ID); |
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103 } |
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104 subDer = der.getData().getDerValue(); |
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105 if ((subDer.getTag() & (byte) 0x1F) != (byte) 0x00) { |
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106 throw new Asn1Exception(Krb5.ASN1_BAD_ID); |
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107 } |
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108 pvno = subDer.getData().getBigInteger().intValue(); |
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109 if (pvno != Krb5.PVNO) { |
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110 throw new KrbApErrException(Krb5.KRB_AP_ERR_BADVERSION); |
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111 } |
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112 subDer = der.getData().getDerValue(); |
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113 if ((subDer.getTag() & (byte) 0x1F) != (byte) 0x01) { |
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114 throw new Asn1Exception(Krb5.ASN1_BAD_ID); |
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115 } |
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116 msgType = subDer.getData().getBigInteger().intValue(); |
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117 if (msgType != Krb5.KRB_AP_REQ) { |
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118 throw new KrbApErrException(Krb5.KRB_AP_ERR_MSG_TYPE); |
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119 } |
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120 apOptions = APOptions.parse(der.getData(), (byte) 0x02, false); |
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121 ticket = Ticket.parse(der.getData(), (byte) 0x03, false); |
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122 authenticator = EncryptedData.parse(der.getData(), (byte) 0x04, false); |
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123 if (der.getData().available() > 0) { |
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124 throw new Asn1Exception(Krb5.ASN1_BAD_ID); |
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125 } |
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126 } |
84 |
127 |
85 /** |
128 /** |
86 * Initializes an APReq object. |
129 * Encodes an APReq object. |
87 * @param encoding a single DER-encoded value. |
130 * @return byte array of encoded APReq object. |
88 * @exception Asn1Exception if an error occurs while decoding an ASN1 encoded data. |
131 * @exception Asn1Exception if an error occurs while decoding an ASN1 encoded data. |
89 * @exception IOException if an I/O error occurs while reading encoded data. |
132 * @exception IOException if an I/O error occurs while reading encoded data. |
90 * @exception KrbApErrException if the value read from the DER-encoded data stream does not match the pre-defined value. |
133 */ |
91 * @exception RealmException if an error occurs while parsing a Realm object. |
134 public byte[] asn1Encode() throws Asn1Exception, IOException { |
92 */ |
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93 private void init(DerValue encoding) throws Asn1Exception, |
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94 IOException, KrbApErrException, RealmException { |
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95 DerValue der, subDer; |
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96 if (((encoding.getTag() & (byte)0x1F) != Krb5.KRB_AP_REQ) |
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97 || (encoding.isApplication() != true) |
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98 || (encoding.isConstructed() != true)) |
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99 throw new Asn1Exception(Krb5.ASN1_BAD_ID); |
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100 der = encoding.getData().getDerValue(); |
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101 if (der.getTag() != DerValue.tag_Sequence) |
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102 throw new Asn1Exception(Krb5.ASN1_BAD_ID); |
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103 subDer = der.getData().getDerValue(); |
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104 if ((subDer.getTag() & (byte)0x1F) != (byte)0x00) |
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105 throw new Asn1Exception(Krb5.ASN1_BAD_ID); |
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106 pvno = subDer.getData().getBigInteger().intValue(); |
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107 if (pvno != Krb5.PVNO) |
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108 throw new KrbApErrException(Krb5.KRB_AP_ERR_BADVERSION); |
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109 subDer = der.getData().getDerValue(); |
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110 if ((subDer.getTag() & (byte)0x1F) != (byte)0x01) |
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111 throw new Asn1Exception(Krb5.ASN1_BAD_ID); |
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112 msgType = subDer.getData().getBigInteger().intValue(); |
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113 if (msgType != Krb5.KRB_AP_REQ) |
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114 throw new KrbApErrException(Krb5.KRB_AP_ERR_MSG_TYPE); |
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115 apOptions = APOptions.parse(der.getData(), (byte)0x02, false); |
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116 ticket = Ticket.parse(der.getData(), (byte)0x03, false); |
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117 authenticator = EncryptedData.parse(der.getData(), (byte)0x04, false); |
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118 if (der.getData().available() > 0) |
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119 throw new Asn1Exception(Krb5.ASN1_BAD_ID); |
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120 } |
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121 |
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122 /** |
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123 * Encodes an APReq object. |
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124 * @return byte array of encoded APReq object. |
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125 * @exception Asn1Exception if an error occurs while decoding an ASN1 encoded data. |
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126 * @exception IOException if an I/O error occurs while reading encoded data. |
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127 */ |
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128 public byte[] asn1Encode() throws Asn1Exception, IOException { |
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129 DerOutputStream bytes = new DerOutputStream(); |
135 DerOutputStream bytes = new DerOutputStream(); |
130 DerOutputStream temp = new DerOutputStream(); |
136 DerOutputStream temp = new DerOutputStream(); |
131 temp.putInteger(BigInteger.valueOf(pvno)); |
137 temp.putInteger(BigInteger.valueOf(pvno)); |
132 bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x00), temp); |
138 bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte) 0x00), temp); |
133 temp = new DerOutputStream(); |
139 temp = new DerOutputStream(); |
134 temp.putInteger(BigInteger.valueOf(msgType)); |
140 temp.putInteger(BigInteger.valueOf(msgType)); |
135 bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x01), temp); |
141 bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte) 0x01), temp); |
136 bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x02), apOptions.asn1Encode()); |
142 bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte) 0x02), apOptions.asn1Encode()); |
137 bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x03), ticket.asn1Encode()); |
143 bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte) 0x03), ticket.asn1Encode()); |
138 bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte)0x04), authenticator.asn1Encode()); |
144 bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte) 0x04), authenticator.asn1Encode()); |
139 temp = new DerOutputStream(); |
145 temp = new DerOutputStream(); |
140 temp.write(DerValue.tag_Sequence, bytes); |
146 temp.write(DerValue.tag_Sequence, bytes); |
141 DerOutputStream apreq = new DerOutputStream(); |
147 DerOutputStream apreq = new DerOutputStream(); |
142 apreq.write(DerValue.createTag(DerValue.TAG_APPLICATION, true, (byte)0x0E), temp); |
148 apreq.write(DerValue.createTag(DerValue.TAG_APPLICATION, true, (byte) 0x0E), temp); |
143 return apreq.toByteArray(); |
149 return apreq.toByteArray(); |
144 |
150 } |
145 } |
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146 |
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147 } |
151 } |