J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2003-2007 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. |
| 8 | * |
| 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| 13 | * accompanied this code). |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License version |
| 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 18 | * |
| 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 21 | * have any questions. |
| 22 | */ |
| 23 | |
| 24 | /** |
| 25 | * |
| 26 | * @author Sean Mullan |
| 27 | * @author Steve Hanna |
| 28 | * |
| 29 | */ |
| 30 | import java.io.ByteArrayOutputStream; |
| 31 | import java.io.File; |
| 32 | import java.io.FileInputStream; |
| 33 | import java.io.InputStream; |
| 34 | import java.io.IOException; |
| 35 | import java.security.cert.CertificateFactory; |
| 36 | import java.security.cert.CertPath; |
| 37 | import java.security.cert.CertPathBuilder; |
| 38 | import java.security.cert.CertPathValidator; |
| 39 | import java.security.cert.CertStore; |
| 40 | import java.security.cert.CollectionCertStoreParameters; |
| 41 | import java.security.cert.PKIXBuilderParameters; |
| 42 | import java.security.cert.PKIXCertPathBuilderResult; |
| 43 | import java.security.cert.PKIXCertPathValidatorResult; |
| 44 | import java.security.cert.PKIXParameters; |
| 45 | import java.security.cert.X509Certificate; |
| 46 | import java.security.cert.X509CRL; |
| 47 | import java.util.ArrayList; |
| 48 | import java.util.HashSet; |
| 49 | import java.util.List; |
| 50 | import java.util.Set; |
| 51 | |
| 52 | /** |
| 53 | * Static utility methods useful for testing certificate/certpath APIs. |
| 54 | */ |
| 55 | public class CertUtils { |
| 56 | |
| 57 | private CertUtils() {} |
| 58 | |
| 59 | /** |
| 60 | * Get a DER-encoded X.509 certificate from a file. |
| 61 | * |
| 62 | * @param certFilePath path to file containing DER-encoded certificate |
| 63 | * @return X509Certificate |
| 64 | * @throws IOException on error |
| 65 | */ |
| 66 | public static X509Certificate getCertFromFile(String certFilePath) |
| 67 | throws IOException { |
| 68 | X509Certificate cert = null; |
| 69 | try { |
| 70 | File certFile = new File(System.getProperty("test.src", "."), |
| 71 | certFilePath); |
| 72 | if (!certFile.canRead()) |
| 73 | throw new IOException("File " + |
| 74 | certFile.toString() + |
| 75 | " is not a readable file."); |
| 76 | FileInputStream certFileInputStream = |
| 77 | new FileInputStream(certFile); |
| 78 | CertificateFactory cf = CertificateFactory.getInstance("X509"); |
| 79 | cert = (X509Certificate) |
| 80 | cf.generateCertificate(certFileInputStream); |
| 81 | } catch (Exception e) { |
| 82 | e.printStackTrace(); |
| 83 | throw new IOException("Can't construct X509Certificate: " + |
| 84 | e.getMessage()); |
| 85 | } |
| 86 | return cert; |
| 87 | } |
| 88 | |
| 89 | /** |
| 90 | * Get a DER-encoded X.509 CRL from a file. |
| 91 | * |
| 92 | * @param crlFilePath path to file containing DER-encoded CRL |
| 93 | * @return X509CRL |
| 94 | * @throws IOException on error |
| 95 | */ |
| 96 | public static X509CRL getCRLFromFile(String crlFilePath) |
| 97 | throws IOException { |
| 98 | X509CRL crl = null; |
| 99 | try { |
| 100 | File crlFile = new File(System.getProperty("test.src", "."), |
| 101 | crlFilePath); |
| 102 | if (!crlFile.canRead()) |
| 103 | throw new IOException("File " + |
| 104 | crlFile.toString() + |
| 105 | " is not a readable file."); |
| 106 | FileInputStream crlFileInputStream = |
| 107 | new FileInputStream(crlFile); |
| 108 | CertificateFactory cf = CertificateFactory.getInstance("X509"); |
| 109 | crl = (X509CRL) cf.generateCRL(crlFileInputStream); |
| 110 | } catch (Exception e) { |
| 111 | e.printStackTrace(); |
| 112 | throw new IOException("Can't construct X509CRL: " + |
| 113 | e.getMessage()); |
| 114 | } |
| 115 | return crl; |
| 116 | } |
| 117 | |
| 118 | /** |
| 119 | * Read a bunch of certs from files and create a CertPath from them. |
| 120 | * |
| 121 | * @param fileNames an array of <code>String</code>s that are file names |
| 122 | * @throws Exception on error |
| 123 | */ |
| 124 | public static CertPath buildPath(String [] fileNames) throws Exception { |
| 125 | return buildPath("", fileNames); |
| 126 | } |
| 127 | |
| 128 | /** |
| 129 | * Read a bunch of certs from files and create a CertPath from them. |
| 130 | * |
| 131 | * @param relPath relative path containing certs (must end in |
| 132 | * file.separator) |
| 133 | * @param fileNames an array of <code>String</code>s that are file names |
| 134 | * @throws Exception on error |
| 135 | */ |
| 136 | public static CertPath buildPath(String relPath, String [] fileNames) |
| 137 | throws Exception { |
| 138 | List<X509Certificate> list = new ArrayList<X509Certificate>(); |
| 139 | for (int i = 0; i < fileNames.length; i++) { |
| 140 | list.add(0, getCertFromFile(relPath + fileNames[i])); |
| 141 | } |
| 142 | CertificateFactory cf = CertificateFactory.getInstance("X509"); |
| 143 | return(cf.generateCertPath(list)); |
| 144 | } |
| 145 | |
| 146 | |
| 147 | /** |
| 148 | * Read a bunch of certs from files and create a CertStore from them. |
| 149 | * |
| 150 | * @param fileNames an array of <code>String</code>s that are file names |
| 151 | * @return the <code>CertStore</code> created |
| 152 | * @throws Exception on error |
| 153 | */ |
| 154 | public static CertStore createStore(String [] fileNames) throws Exception { |
| 155 | return createStore("", fileNames); |
| 156 | } |
| 157 | |
| 158 | /** |
| 159 | * Read a bunch of certs from files and create a CertStore from them. |
| 160 | * |
| 161 | * @param relPath relative path containing certs (must end in |
| 162 | * file.separator) |
| 163 | * @param fileNames an array of <code>String</code>s that are file names |
| 164 | * @return the <code>CertStore</code> created |
| 165 | * @throws Exception on error |
| 166 | */ |
| 167 | public static CertStore createStore(String relPath, String [] fileNames) |
| 168 | throws Exception { |
| 169 | Set<X509Certificate> certs = new HashSet<X509Certificate>(); |
| 170 | for (int i = 0; i < fileNames.length; i++) { |
| 171 | certs.add(getCertFromFile(relPath + fileNames[i])); |
| 172 | } |
| 173 | return CertStore.getInstance("Collection", |
| 174 | new CollectionCertStoreParameters(certs)); |
| 175 | } |
| 176 | |
| 177 | /** |
| 178 | * Read a bunch of CRLs from files and create a CertStore from them. |
| 179 | * |
| 180 | * @param fileNames an array of <code>String</code>s that are file names |
| 181 | * @return the <code>CertStore</code> created |
| 182 | * @throws Exception on error |
| 183 | */ |
| 184 | public static CertStore createCRLStore(String [] fileNames) |
| 185 | throws Exception { |
| 186 | return createCRLStore("", fileNames); |
| 187 | } |
| 188 | |
| 189 | /** |
| 190 | * Read a bunch of CRLs from files and create a CertStore from them. |
| 191 | * |
| 192 | * @param relPath relative path containing CRLs (must end in file.separator) |
| 193 | * @param fileNames an array of <code>String</code>s that are file names |
| 194 | * @return the <code>CertStore</code> created |
| 195 | * @throws Exception on error |
| 196 | */ |
| 197 | public static CertStore createCRLStore(String relPath, String [] fileNames) |
| 198 | throws Exception { |
| 199 | Set<X509CRL> crls = new HashSet<X509CRL>(); |
| 200 | for (int i = 0; i < fileNames.length; i++) { |
| 201 | crls.add(getCRLFromFile(relPath + fileNames[i])); |
| 202 | } |
| 203 | return CertStore.getInstance("Collection", |
| 204 | new CollectionCertStoreParameters(crls)); |
| 205 | } |
| 206 | |
| 207 | /** |
| 208 | * Perform a PKIX path build. On failure, throw an exception. |
| 209 | * |
| 210 | * @param params PKIXBuilderParameters to use in validation |
| 211 | * @throws Exception on error |
| 212 | */ |
| 213 | public static PKIXCertPathBuilderResult build(PKIXBuilderParameters params) |
| 214 | throws Exception { |
| 215 | CertPathBuilder builder = |
| 216 | CertPathBuilder.getInstance("PKIX"); |
| 217 | return (PKIXCertPathBuilderResult) builder.build(params); |
| 218 | } |
| 219 | |
| 220 | /** |
| 221 | * Perform a PKIX validation. On failure, throw an exception. |
| 222 | * |
| 223 | * @param path CertPath to validate |
| 224 | * @param params PKIXParameters to use in validation |
| 225 | * @throws Exception on error |
| 226 | */ |
| 227 | public static PKIXCertPathValidatorResult validate |
| 228 | (CertPath path, PKIXParameters params) throws Exception { |
| 229 | CertPathValidator validator = |
| 230 | CertPathValidator.getInstance("PKIX"); |
| 231 | return (PKIXCertPathValidatorResult) validator.validate(path, params); |
| 232 | } |
| 233 | |
| 234 | /* |
| 235 | * Reads the entire input stream into a byte array. |
| 236 | */ |
| 237 | private static byte[] getTotalBytes(InputStream is) throws IOException { |
| 238 | byte[] buffer = new byte[8192]; |
| 239 | ByteArrayOutputStream baos = new ByteArrayOutputStream(2048); |
| 240 | int n; |
| 241 | baos.reset(); |
| 242 | while ((n = is.read(buffer, 0, buffer.length)) != -1) { |
| 243 | baos.write(buffer, 0, n); |
| 244 | } |
| 245 | return baos.toByteArray(); |
| 246 | } |
| 247 | } |