[31b67d5] | 1 | package net.deterlab.abac; |
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| 2 | |
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[7ef13e3] | 3 | import java.io.*; |
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[281158a] | 4 | import java.math.*; |
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[7ef13e3] | 5 | |
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| 6 | import java.util.*; |
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[5cf72cc] | 7 | import java.util.zip.*; |
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[7ef13e3] | 8 | import java.security.*; |
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| 9 | import java.security.cert.*; |
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| 10 | |
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[9725efb] | 11 | import net.deterlab.abac.Identity; |
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[90f939f] | 12 | |
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| 13 | import org.bouncycastle.asn1.*; |
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| 14 | import org.bouncycastle.x509.*; |
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[281158a] | 15 | import org.bouncycastle.jce.X509Principal; |
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[90f939f] | 16 | import org.bouncycastle.jce.provider.X509AttrCertParser; |
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[7ef13e3] | 17 | import org.bouncycastle.jce.provider.X509CertificateObject; |
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| 18 | import org.bouncycastle.openssl.PEMReader; |
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[90f939f] | 19 | |
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[281158a] | 20 | import org.bouncycastle.asn1.util.ASN1Dump; |
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| 21 | |
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| 22 | import java.security.PrivateKey; |
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| 23 | |
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[88e139a] | 24 | public class Credential implements Comparable { |
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[9725efb] | 25 | protected static Vector<Identity> s_ids = new Vector<Identity>(); |
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[281158a] | 26 | protected static String attrOID = "1.3.6.1.5.5.7.10.4"; |
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[9394f1f] | 27 | |
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| 28 | /** |
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| 29 | * A dummy credential. |
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| 30 | */ |
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| 31 | public Credential() { |
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| 32 | m_head = m_tail = null; |
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| 33 | m_ac = null; |
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| 34 | m_id = null; |
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| 35 | } |
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[31b67d5] | 36 | /** |
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| 37 | * Create a credential from a head and tail role. This is only for testing. |
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| 38 | * In a real implementation the Credential must be loaded from an X.509 |
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| 39 | * attribute cert. |
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| 40 | */ |
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| 41 | public Credential(Role head, Role tail) { |
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| 42 | m_head = head; |
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| 43 | m_tail = tail; |
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[9394f1f] | 44 | m_ac = null; |
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| 45 | m_id = null; |
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[31b67d5] | 46 | } |
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| 47 | |
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[90f939f] | 48 | /** |
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[7ef13e3] | 49 | * Do the credential initialization from a filename. |
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[90f939f] | 50 | */ |
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[1a7e6d3] | 51 | protected void init(InputStream stream) throws Exception { |
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[90f939f] | 52 | X509AttrCertParser parser = new X509AttrCertParser(); |
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[1a7e6d3] | 53 | parser.engineInit(stream); |
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[90f939f] | 54 | m_ac = (X509V2AttributeCertificate)parser.engineRead(); |
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[7ef13e3] | 55 | m_id = null; |
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| 56 | |
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[be05757] | 57 | if ( m_ac == null ) throw new IOException("Invalid Credential Format"); |
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| 58 | |
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[9725efb] | 59 | for (Identity id: s_ids) { |
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[7ef13e3] | 60 | try { |
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[9725efb] | 61 | m_ac.verify(id.getCertificate().getPublicKey(), "BC"); |
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[7ef13e3] | 62 | m_id = id; |
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| 63 | break; |
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| 64 | } |
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[9725efb] | 65 | catch (InvalidKeyException e) { } |
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[7ef13e3] | 66 | } |
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| 67 | if (m_id == null) throw new InvalidKeyException("Unknown identity"); |
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[90f939f] | 68 | |
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| 69 | load_roles(); |
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[281158a] | 70 | |
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| 71 | if (!m_id.getKeyID().equals(m_head.issuer_part())) |
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| 72 | throw new InvalidKeyException("Unknown identity"); |
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[90f939f] | 73 | } |
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| 74 | |
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[7ef13e3] | 75 | /** |
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| 76 | * Create a credential from an attribute cert. Throws an exception if the |
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| 77 | * cert file can't be opened or if there's a format problem with the cert. |
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| 78 | */ |
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| 79 | public Credential(String filename) throws Exception { |
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[1a7e6d3] | 80 | init(new FileInputStream(filename)); |
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[7ef13e3] | 81 | } |
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| 82 | |
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| 83 | /** |
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| 84 | * Create a credential from an attribute cert. Throws an exception if the |
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| 85 | * cert file can't be opened or if there's a format problem with the cert. |
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| 86 | */ |
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| 87 | public Credential(File file) throws Exception { |
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[1a7e6d3] | 88 | init(new FileInputStream(file)); |
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| 89 | } |
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| 90 | |
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| 91 | /** |
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| 92 | * Create a credential from an InputStream. |
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| 93 | */ |
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| 94 | public Credential(InputStream s) throws Exception { |
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| 95 | init(s); |
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[7ef13e3] | 96 | } |
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| 97 | |
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[281158a] | 98 | public void make_cert(PrivateKey key) { |
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| 99 | X509V2AttributeCertificateGenerator gen = |
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| 100 | new X509V2AttributeCertificateGenerator(); |
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| 101 | |
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| 102 | gen.setIssuer(new AttributeCertificateIssuer( |
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| 103 | new X509Principal("CN="+m_head.issuer_part()))); |
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| 104 | gen.setHolder(new AttributeCertificateHolder( |
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| 105 | new X509Principal("CN="+m_head.issuer_part()))); |
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| 106 | gen.setNotAfter(new Date(System.currentTimeMillis() |
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| 107 | + 3600 * 1000 * 24 * 365)); |
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| 108 | gen.setNotBefore(new Date(System.currentTimeMillis())); |
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| 109 | gen.setSerialNumber(BigInteger.valueOf(System.currentTimeMillis())); |
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| 110 | gen.addAttribute(new X509Attribute(attrOID, |
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| 111 | new DERSequence( |
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| 112 | new DERSequence( |
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| 113 | new DERUTF8String(toString()))))); |
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| 114 | gen.setSignatureAlgorithm("SHA256WithRSAEncryption"); |
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| 115 | |
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| 116 | try { |
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| 117 | m_ac = (X509V2AttributeCertificate) gen.generate(key, "BC"); |
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| 118 | } |
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| 119 | catch (Exception e) { |
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| 120 | System.err.println(e); |
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| 121 | } |
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| 122 | } |
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[7ef13e3] | 123 | |
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[90f939f] | 124 | /** |
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| 125 | * Load the roles off the attribute cert. Throws a RuntimeException if |
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| 126 | * there's something wrong with the cert. |
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| 127 | */ |
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| 128 | private void load_roles() throws RuntimeException { |
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| 129 | String roles = null; |
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| 130 | try { |
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| 131 | X509Attribute attr = m_ac.getAttributes()[0]; |
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| 132 | |
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| 133 | DERSequence java = (DERSequence)attr.getValues()[0]; |
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| 134 | DERSequence fucking = (DERSequence)java.getObjectAt(0); |
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| 135 | DERUTF8String sucks = (DERUTF8String)fucking.getObjectAt(0); |
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| 136 | |
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| 137 | roles = sucks.getString(); |
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| 138 | } |
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| 139 | catch (Exception e) { |
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| 140 | throw new RuntimeException("Your attribute certificate is funky and I'm not gonna debug it", e); |
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| 141 | } |
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| 142 | |
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| 143 | String[] parts = roles.split("\\s*<--?\\s*"); |
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| 144 | if (parts.length != 2) |
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| 145 | throw new RuntimeException("Invalid attribute: " + roles); |
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| 146 | |
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| 147 | m_head = new Role(parts[0]); |
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| 148 | m_tail = new Role(parts[1]); |
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| 149 | } |
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| 150 | |
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[cfcdcb4b] | 151 | /** |
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| 152 | * Two credentials are the same if their roles are the same. |
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| 153 | */ |
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| 154 | public boolean equals(Object o) { |
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| 155 | if ( o instanceof Credential ) { |
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| 156 | Credential c = (Credential) o; |
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| 157 | |
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| 158 | if (m_head == null || m_tail == null ) return false; |
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| 159 | else return (m_head.equals(c.head()) && m_tail.equals(c.tail())); |
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| 160 | } |
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| 161 | else return false; |
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| 162 | } |
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| 163 | |
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[88e139a] | 164 | public int compareTo(Object o) { |
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| 165 | if (o instanceof Credential) { |
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| 166 | Credential c = (Credential) o; |
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| 167 | |
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| 168 | if (head().equals(c.head())) return tail().compareTo(c.tail()); |
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| 169 | else return head().compareTo(c.head()); |
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| 170 | } |
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| 171 | else return 1; |
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| 172 | } |
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| 173 | |
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| 174 | |
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[31b67d5] | 175 | /** |
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| 176 | * Get the head role from the credential. |
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| 177 | */ |
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| 178 | public Role head() { |
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| 179 | return m_head; |
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| 180 | } |
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| 181 | |
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| 182 | /** |
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| 183 | * Get the tail role from the credential |
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| 184 | */ |
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| 185 | public Role tail() { |
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| 186 | return m_tail; |
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| 187 | } |
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| 188 | |
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[90f939f] | 189 | /** |
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| 190 | * Gets the cert associated with this credential (if any). |
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| 191 | */ |
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| 192 | public X509V2AttributeCertificate cert() { |
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| 193 | return m_ac; |
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| 194 | } |
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| 195 | |
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[31b67d5] | 196 | /** |
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| 197 | * Turn the credential into string form. The format is head <- tail. For |
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| 198 | * example: A.r1 <- B.r2.r3. |
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| 199 | */ |
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| 200 | public String toString() { |
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| 201 | return m_head + " <- " + m_tail; |
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| 202 | } |
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| 203 | |
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[de63a31] | 204 | public String simpleString() { |
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| 205 | return m_head.simpleString() + " <- " + m_tail.simpleString(); |
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| 206 | } |
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| 207 | |
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[1a7e6d3] | 208 | public void write(OutputStream s) throws IOException { |
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| 209 | s.write(m_ac.getEncoded()); |
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| 210 | } |
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| 211 | |
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| 212 | public void write(String fn) throws IOException, FileNotFoundException { |
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| 213 | write(new FileOutputStream(fn)); |
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| 214 | } |
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| 215 | |
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[f6789db] | 216 | public boolean hasCertificate() { return m_ac != null; } |
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| 217 | |
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[5cf72cc] | 218 | public Identity getID() { return m_id; } |
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| 219 | |
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| 220 | /** |
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| 221 | * Import a zip file. First import all the identities |
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| 222 | * (pem), then the credentials (der) into the credential graph then any |
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| 223 | * alias files into the two maps. If keys is not null, any key pairs in |
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| 224 | * PEM files are put in there. If errors is not null, errors reading files |
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| 225 | * are added indexed by filename. |
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| 226 | */ |
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[e1c49ce] | 227 | static public Collection<Credential> readZipFile(File zf, |
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| 228 | Collection<KeyPair> keys, Map<String, Exception> errors) |
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| 229 | throws IOException { |
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[5cf72cc] | 230 | Vector<Credential> creds = new Vector<Credential>(); |
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[42ca4b8] | 231 | Vector<ZipEntry> derEntries = new Vector<ZipEntry>(); |
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| 232 | Map<String, Identity> ids = new TreeMap<String, Identity>(); |
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| 233 | Map<String, KeyPair> kps = new TreeMap<String, KeyPair>(); |
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[5cf72cc] | 234 | |
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[e1c49ce] | 235 | ZipFile z = new ZipFile(zf); |
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| 236 | |
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[5cf72cc] | 237 | for (Enumeration<? extends ZipEntry> ze = z.entries(); |
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| 238 | ze.hasMoreElements();) { |
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| 239 | ZipEntry f = ze.nextElement(); |
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| 240 | try { |
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[42ca4b8] | 241 | PEMReader r = new PEMReader( |
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| 242 | new InputStreamReader(z.getInputStream(f))); |
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| 243 | Object o = readPEM(r); |
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| 244 | |
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| 245 | if ( o != null ) { |
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| 246 | if (o instanceof Identity) { |
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| 247 | Identity i = (Identity) o; |
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| 248 | String kid = i.getKeyID(); |
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| 249 | |
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| 250 | if (kps.containsKey(kid) ) { |
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| 251 | i.setKeyPair(kps.get(kid)); |
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| 252 | kps.remove(kid); |
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| 253 | } |
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| 254 | else if (i.getKeyPair() == null ) |
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| 255 | ids.put(i.getKeyID(), i); |
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| 256 | |
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| 257 | Credential.addIdentity(i); |
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| 258 | } |
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| 259 | else if (o instanceof KeyPair ) { |
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| 260 | KeyPair kp = (KeyPair) o; |
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| 261 | String kid = Identity.extractKeyID(kp.getPublic()); |
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| 262 | |
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| 263 | if (ids.containsKey(kid)) { |
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| 264 | Identity i = ids.get(kid); |
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| 265 | |
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| 266 | i.setKeyPair(kp); |
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| 267 | ids.remove(kid); |
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| 268 | } |
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| 269 | else { |
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| 270 | kps.put(kid, kp); |
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| 271 | } |
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| 272 | } |
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[5cf72cc] | 273 | } |
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| 274 | else { |
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[42ca4b8] | 275 | // Not a PEM file |
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| 276 | derEntries.add(f); |
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| 277 | continue; |
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[5cf72cc] | 278 | } |
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| 279 | } |
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| 280 | catch (Exception e ) { |
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| 281 | if (errors != null ) errors.put(f.getName(), e); |
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| 282 | } |
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| 283 | } |
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| 284 | |
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[42ca4b8] | 285 | for ( ZipEntry f : derEntries ) { |
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[5cf72cc] | 286 | try { |
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| 287 | creds.add(new Credential(z.getInputStream(f))); |
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| 288 | } |
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| 289 | catch (Exception e ) { |
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| 290 | if (errors != null ) errors.put(f.getName(), e); |
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| 291 | } |
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| 292 | } |
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| 293 | return creds; |
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| 294 | } |
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| 295 | |
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[e1c49ce] | 296 | static public Collection<Credential> readZipFile(File d) |
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| 297 | throws IOException { |
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[5cf72cc] | 298 | return readZipFile(d, null, null); |
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| 299 | } |
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[e1c49ce] | 300 | static public Collection<Credential> readZipFile(File d, |
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| 301 | Map<String, Exception> errors) throws IOException { |
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[5cf72cc] | 302 | return readZipFile(d, null, errors); |
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| 303 | } |
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[e1c49ce] | 304 | static public Collection<Credential> readZipFile(File d, |
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| 305 | Collection<KeyPair> keys) throws IOException { |
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[5cf72cc] | 306 | return readZipFile(d, keys, null); |
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| 307 | } |
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| 308 | |
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[42ca4b8] | 309 | protected static Object readPEM(PEMReader r) throws IOException { |
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| 310 | Identity i = null; |
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| 311 | KeyPair keys = null; |
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| 312 | Object o = null; |
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| 313 | |
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| 314 | while ( (o = r.readObject()) != null ) { |
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| 315 | if (o instanceof X509CertificateObject) { |
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| 316 | if ( i == null ) { |
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| 317 | try { |
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| 318 | i = new Identity((X509CertificateObject)o); |
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| 319 | } |
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| 320 | catch (Exception e) { |
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| 321 | // Translate Idenitiy exceptions to IOException |
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| 322 | throw new IOException(e); |
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| 323 | } |
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| 324 | if (keys != null ) { |
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| 325 | i.setKeyPair(keys); |
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| 326 | keys = null; |
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| 327 | } |
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| 328 | } |
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| 329 | else throw new IOException("Two certificates"); |
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| 330 | } |
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| 331 | else if (o instanceof KeyPair ) { |
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| 332 | if ( i != null ) i.setKeyPair((KeyPair) o); |
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| 333 | else keys = (KeyPair) o; |
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| 334 | } |
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| 335 | else { |
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| 336 | throw new IOException("Unexpected PEM object: " + |
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| 337 | o.getClass().getName()); |
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| 338 | } |
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| 339 | } |
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| 340 | |
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| 341 | if ( i != null ) return i; |
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| 342 | else if ( keys != null) return keys; |
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| 343 | else return null; |
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| 344 | } |
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[5cf72cc] | 345 | |
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[be05757] | 346 | /** |
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| 347 | * Import a directory full of files. First import all the identities |
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| 348 | * (pem), then the credentials (der) into the credential graph then any |
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| 349 | * alias files into the two maps. If keys is not null, any key pairs in |
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| 350 | * PEM files are put in there. If errors is not null, errors reading files |
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| 351 | * are added indexed by filename. |
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| 352 | */ |
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| 353 | static public Collection<Credential> readDirectory(File d, |
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[5cf72cc] | 354 | Collection<KeyPair> keys, Map<String, Exception> errors) { |
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[be05757] | 355 | Vector<Credential> creds = new Vector<Credential>(); |
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| 356 | Vector<File> derFiles = new Vector<File>(); |
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[e1c49ce] | 357 | Collection<File> files = new Vector<File>(); |
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[42ca4b8] | 358 | Map<String, Identity> ids = new TreeMap<String, Identity>(); |
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| 359 | Map<String, KeyPair> kps = new TreeMap<String, KeyPair>(); |
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[e1c49ce] | 360 | |
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| 361 | if (d.isDirectory() ) |
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| 362 | for (File f : d.listFiles()) |
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| 363 | files.add(f); |
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| 364 | else files.add(d); |
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[be05757] | 365 | |
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[e1c49ce] | 366 | for (File f: files ) { |
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[be05757] | 367 | try { |
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[42ca4b8] | 368 | PEMReader r = new PEMReader(new FileReader(f)); |
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| 369 | Object o = readPEM(r); |
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| 370 | |
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| 371 | if ( o != null ) { |
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| 372 | if (o instanceof Identity) { |
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| 373 | Identity i = (Identity) o; |
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| 374 | String kid = i.getKeyID(); |
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| 375 | |
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| 376 | if (kps.containsKey(kid) ) { |
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| 377 | i.setKeyPair(kps.get(kid)); |
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| 378 | kps.remove(kid); |
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| 379 | } |
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| 380 | else if (i.getKeyPair() == null ) |
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| 381 | ids.put(i.getKeyID(), i); |
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| 382 | |
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| 383 | Credential.addIdentity(i); |
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| 384 | } |
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| 385 | else if (o instanceof KeyPair ) { |
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| 386 | KeyPair kp = (KeyPair) o; |
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| 387 | String kid = Identity.extractKeyID(kp.getPublic()); |
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| 388 | |
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| 389 | if (ids.containsKey(kid)) { |
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| 390 | Identity i = ids.get(kid); |
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| 391 | |
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| 392 | i.setKeyPair(kp); |
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| 393 | ids.remove(kid); |
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| 394 | } |
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| 395 | else { |
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| 396 | kps.put(kid, kp); |
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| 397 | } |
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| 398 | } |
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[be05757] | 399 | } |
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| 400 | else { |
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[42ca4b8] | 401 | // Not a PEM file |
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| 402 | derFiles.add(f); |
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| 403 | continue; |
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[be05757] | 404 | } |
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| 405 | } |
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| 406 | catch (Exception e ) { |
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[5cf72cc] | 407 | if (errors != null ) errors.put(f.getName(), e); |
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[be05757] | 408 | } |
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| 409 | } |
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| 410 | |
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| 411 | for ( File f : derFiles ) { |
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| 412 | try { |
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| 413 | creds.add(new Credential(f)); |
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| 414 | } |
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| 415 | catch (Exception e ) { |
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[5cf72cc] | 416 | if (errors != null ) errors.put(f.getName(), e); |
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[be05757] | 417 | } |
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| 418 | } |
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| 419 | return creds; |
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| 420 | } |
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| 421 | |
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| 422 | static public Collection<Credential> readDirectory(File d) { |
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| 423 | return readDirectory(d, null, null); |
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| 424 | } |
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| 425 | static public Collection<Credential> readDirectory(File d, |
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[5cf72cc] | 426 | Map<String, Exception> errors) { |
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[be05757] | 427 | return readDirectory(d, null, errors); |
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| 428 | } |
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| 429 | static public Collection<Credential> readDirectory(File d, |
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| 430 | Collection<KeyPair> keys) { |
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| 431 | return readDirectory(d, keys, null); |
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| 432 | } |
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| 433 | |
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[5cf72cc] | 434 | static public void writeZipFile(Collection<Credential> creds, File f, |
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| 435 | boolean allIDs) |
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| 436 | throws IOException { |
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| 437 | ZipOutputStream z = new ZipOutputStream(new FileOutputStream(f)); |
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| 438 | Set<Identity> ids = allIDs ? |
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[8a6181b] | 439 | new TreeSet<Identity>(s_ids) : new TreeSet<Identity>(); |
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[5cf72cc] | 440 | |
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| 441 | int n = 0; |
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| 442 | for (Credential c: creds) { |
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| 443 | z.putNextEntry(new ZipEntry("attr" + n++ + ".der")); |
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| 444 | c.write(z); |
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| 445 | z.closeEntry(); |
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| 446 | if ( c.getID() != null && !allIDs) ids.add(c.getID()); |
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| 447 | } |
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| 448 | for (Identity i: ids) { |
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| 449 | z.putNextEntry(new ZipEntry(i.getName() + ".pem")); |
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| 450 | i.write(z); |
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| 451 | z.closeEntry(); |
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| 452 | } |
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| 453 | z.close(); |
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| 454 | } |
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| 455 | |
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| 456 | |
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[be05757] | 457 | private Role m_head, m_tail; |
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[90f939f] | 458 | |
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[be05757] | 459 | private X509V2AttributeCertificate m_ac; |
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| 460 | private Identity m_id; |
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[7ef13e3] | 461 | |
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[e1c49ce] | 462 | /** |
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| 463 | * Put the Identity into the set of ids used to validate certificates. |
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| 464 | * Also put the keyID and name into the translation mappings used by Roles |
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| 465 | * to pretty print. In the role mapping, if multiple ids use the same |
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| 466 | * common name they are disambiguated. Only one entry for keyid is |
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| 467 | * allowed. |
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| 468 | */ |
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[de63a31] | 469 | public static void addIdentity(Identity id) { |
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| 470 | s_ids.add(id); |
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[e1c49ce] | 471 | if (id.getName() != null && id.getKeyID() != null) { |
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| 472 | if ( !Role.key_in_mapping(id.getKeyID()) ) { |
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| 473 | String name = id.getName(); |
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| 474 | int n= 1; |
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| 475 | |
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| 476 | while (Role.name_in_mapping(name)) { |
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| 477 | name = id.getName() + n++; |
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| 478 | } |
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| 479 | Role.add_mapping(name, id.getKeyID()); |
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| 480 | } |
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| 481 | } |
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[de63a31] | 482 | } |
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[9725efb] | 483 | public static Collection<Identity> identities() { return s_ids; } |
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[e1c49ce] | 484 | public static void clearIdentities() { |
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| 485 | s_ids.clear(); Role.clear_mapping(); |
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| 486 | } |
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[31b67d5] | 487 | } |
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