1 /*
   2  * Copyright (c) 2003, 2016, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 import com.sun.net.httpserver.*;
  25 import java.io.BufferedReader;
  26 import java.io.ByteArrayOutputStream;
  27 import java.io.FileInputStream;
  28 import java.io.IOException;
  29 import java.io.InputStream;
  30 import java.io.InputStreamReader;
  31 import java.io.OutputStream;
  32 import java.math.BigInteger;
  33 import java.net.InetSocketAddress;
  34 import java.security.KeyStore;
  35 import java.security.PrivateKey;
  36 import java.security.Signature;
  37 import java.security.cert.Certificate;
  38 import java.security.cert.X509Certificate;
  39 import java.util.Calendar;
  40 import java.util.jar.JarEntry;
  41 import java.util.jar.JarFile;
  42 
  43 import sun.misc.IOUtils;
  44 import sun.security.pkcs.ContentInfo;
  45 import sun.security.pkcs.PKCS7;
  46 import sun.security.pkcs.PKCS9Attribute;
  47 import sun.security.pkcs.SignerInfo;
  48 import sun.security.timestamp.TimestampToken;
  49 import sun.security.util.DerOutputStream;
  50 import sun.security.util.DerValue;
  51 import sun.security.util.ObjectIdentifier;
  52 import sun.security.x509.AlgorithmId;
  53 import sun.security.x509.X500Name;
  54 
  55 public class TimestampCheck {
  56     static final String TSKS = "tsks";
  57     static final String JAR = "old.jar";
  58 
  59     static final String defaultPolicyId = "2.3.4.5";
  60 
  61     static class Handler implements HttpHandler, AutoCloseable {
  62 
  63         private final HttpServer httpServer;
  64         private final String keystore;
  65 
  66         @Override
  67         public void handle(HttpExchange t) throws IOException {
  68             int len = 0;
  69             for (String h: t.getRequestHeaders().keySet()) {
  70                 if (h.equalsIgnoreCase("Content-length")) {
  71                     len = Integer.valueOf(t.getRequestHeaders().get(h).get(0));
  72                 }
  73             }
  74             byte[] input = new byte[len];
  75             t.getRequestBody().read(input);
  76 
  77             try {
  78                 int path = 0;
  79                 if (t.getRequestURI().getPath().length() > 1) {
  80                     path = Integer.parseInt(
  81                             t.getRequestURI().getPath().substring(1));
  82                 }
  83                 byte[] output = sign(input, path);
  84                 Headers out = t.getResponseHeaders();
  85                 out.set("Content-Type", "application/timestamp-reply");
  86 
  87                 t.sendResponseHeaders(200, output.length);
  88                 OutputStream os = t.getResponseBody();
  89                 os.write(output);
  90             } catch (Exception e) {
  91                 e.printStackTrace();
  92                 t.sendResponseHeaders(500, 0);
  93             }
  94             t.close();
  95         }
  96 
  97         /**
  98          * @param input The data to sign
  99          * @param path different cases to simulate, impl on URL path
 100          * 0: normal
 101          * 1: Missing nonce
 102          * 2: Different nonce
 103          * 3: Bad digets octets in messageImprint
 104          * 4: Different algorithmId in messageImprint
 105          * 5: whole chain in cert set
 106          * 6: extension is missing
 107          * 7: extension is non-critical
 108          * 8: extension does not have timestamping
 109          * 9: no cert in response
 110          * 10: normal
 111          * 11: always return default policy id
 112          * 12: normal
 113          * otherwise: normal
 114          * @returns the signed
 115          */
 116         byte[] sign(byte[] input, int path) throws Exception {
 117             // Read TSRequest
 118             DerValue value = new DerValue(input);
 119             System.err.println("\nIncoming Request\n===================");
 120             System.err.println("Version: " + value.data.getInteger());
 121             DerValue messageImprint = value.data.getDerValue();
 122             AlgorithmId aid = AlgorithmId.parse(
 123                     messageImprint.data.getDerValue());
 124             System.err.println("AlgorithmId: " + aid);
 125 
 126             ObjectIdentifier policyId = new ObjectIdentifier(defaultPolicyId);
 127             BigInteger nonce = null;
 128             while (value.data.available() > 0) {
 129                 DerValue v = value.data.getDerValue();
 130                 if (v.tag == DerValue.tag_Integer) {
 131                     nonce = v.getBigInteger();
 132                     System.err.println("nonce: " + nonce);
 133                 } else if (v.tag == DerValue.tag_Boolean) {
 134                     System.err.println("certReq: " + v.getBoolean());
 135                 } else if (v.tag == DerValue.tag_ObjectId) {
 136                     policyId = v.getOID();
 137                     System.err.println("PolicyID: " + policyId);
 138                 }
 139             }
 140 
 141             // Write TSResponse
 142             System.err.println("\nResponse\n===================");
 143             KeyStore ks = KeyStore.getInstance("JKS");
 144             try (FileInputStream fis = new FileInputStream(keystore)) {
 145                 ks.load(fis, "changeit".toCharArray());
 146             }
 147 
 148             String alias = "ts";
 149             if (path == 6) alias = "tsbad1";
 150             if (path == 7) alias = "tsbad2";
 151             if (path == 8) alias = "tsbad3";
 152 
 153             if (path == 11) {
 154                 policyId = new ObjectIdentifier(defaultPolicyId);
 155             }
 156 
 157             DerOutputStream statusInfo = new DerOutputStream();
 158             statusInfo.putInteger(0);
 159 
 160             DerOutputStream token = new DerOutputStream();
 161             AlgorithmId[] algorithms = {aid};
 162             Certificate[] chain = ks.getCertificateChain(alias);
 163             X509Certificate[] signerCertificateChain = null;
 164             X509Certificate signer = (X509Certificate)chain[0];
 165             if (path == 5) {   // Only case 5 uses full chain
 166                 signerCertificateChain = new X509Certificate[chain.length];
 167                 for (int i=0; i<chain.length; i++) {
 168                     signerCertificateChain[i] = (X509Certificate)chain[i];
 169                 }
 170             } else if (path == 9) {
 171                 signerCertificateChain = new X509Certificate[0];
 172             } else {
 173                 signerCertificateChain = new X509Certificate[1];
 174                 signerCertificateChain[0] = (X509Certificate)chain[0];
 175             }
 176 
 177             DerOutputStream tst = new DerOutputStream();
 178 
 179             tst.putInteger(1);
 180             tst.putOID(policyId);
 181 
 182             if (path != 3 && path != 4) {
 183                 tst.putDerValue(messageImprint);
 184             } else {
 185                 byte[] data = messageImprint.toByteArray();
 186                 if (path == 4) {
 187                     data[6] = (byte)0x01;
 188                 } else {
 189                     data[data.length-1] = (byte)0x01;
 190                     data[data.length-2] = (byte)0x02;
 191                     data[data.length-3] = (byte)0x03;
 192                 }
 193                 tst.write(data);
 194             }
 195 
 196             tst.putInteger(1);
 197 
 198             Calendar cal = Calendar.getInstance();
 199             tst.putGeneralizedTime(cal.getTime());
 200 
 201             if (path == 2) {
 202                 tst.putInteger(1234);
 203             } else if (path == 1) {
 204                 // do nothing
 205             } else {
 206                 tst.putInteger(nonce);
 207             }
 208 
 209             DerOutputStream tstInfo = new DerOutputStream();
 210             tstInfo.write(DerValue.tag_Sequence, tst);
 211 
 212             DerOutputStream tstInfo2 = new DerOutputStream();
 213             tstInfo2.putOctetString(tstInfo.toByteArray());
 214 
 215             Signature sig = Signature.getInstance("SHA1withRSA");
 216             sig.initSign((PrivateKey)(ks.getKey(
 217                     alias, "changeit".toCharArray())));
 218             sig.update(tstInfo.toByteArray());
 219 
 220             ContentInfo contentInfo = new ContentInfo(new ObjectIdentifier(
 221                     "1.2.840.113549.1.9.16.1.4"),
 222                     new DerValue(tstInfo2.toByteArray()));
 223 
 224             System.err.println("Signing...");
 225             System.err.println(new X500Name(signer
 226                     .getIssuerX500Principal().getName()));
 227             System.err.println(signer.getSerialNumber());
 228 
 229             SignerInfo signerInfo = new SignerInfo(
 230                     new X500Name(signer.getIssuerX500Principal().getName()),
 231                     signer.getSerialNumber(),
 232                     aid, AlgorithmId.get("RSA"), sig.sign());
 233 
 234             SignerInfo[] signerInfos = {signerInfo};
 235             PKCS7 p7 =
 236                     new PKCS7(algorithms, contentInfo, signerCertificateChain,
 237                     signerInfos);
 238             ByteArrayOutputStream p7out = new ByteArrayOutputStream();
 239             p7.encodeSignedData(p7out);
 240 
 241             DerOutputStream response = new DerOutputStream();
 242             response.write(DerValue.tag_Sequence, statusInfo);
 243             response.putDerValue(new DerValue(p7out.toByteArray()));
 244 
 245             DerOutputStream out = new DerOutputStream();
 246             out.write(DerValue.tag_Sequence, response);
 247 
 248             return out.toByteArray();
 249         }
 250 
 251         private Handler(HttpServer httpServer, String keystore) {
 252             this.httpServer = httpServer;
 253             this.keystore = keystore;
 254         }
 255 
 256         /**
 257          * Initialize TSA instance.
 258          *
 259          * Extended Key Info extension of certificate that is used for
 260          * signing TSA responses should contain timeStamping value.
 261          */
 262         static Handler init(int port, String keystore) throws IOException {
 263             HttpServer httpServer = HttpServer.create(
 264                     new InetSocketAddress(port), 0);
 265             Handler tsa = new Handler(httpServer, keystore);
 266             httpServer.createContext("/", tsa);
 267             return tsa;
 268         }
 269 
 270         /**
 271          * Start TSA service.
 272          */
 273         void start() {
 274             httpServer.start();
 275         }
 276 
 277         /**
 278          * Stop TSA service.
 279          */
 280         void stop() {
 281             httpServer.stop(0);
 282         }
 283 
 284         /**
 285          * Return server port number.
 286          */
 287         int getPort() {
 288             return httpServer.getAddress().getPort();
 289         }
 290 
 291         @Override
 292         public void close() throws Exception {
 293             stop();
 294         }
 295     }
 296     public static void main(String[] args) throws Exception {
 297         try (Handler tsa = Handler.init(0, TSKS);) {
 298             tsa.start();
 299             int port = tsa.getPort();
 300 
 301             String cmd;
 302             // Use -J-Djava.security.egd=file:/dev/./urandom to speed up
 303             // nonce generation in timestamping request. Not avaibale on
 304             // Windows and defaults to thread seed generator, not too bad.
 305             if (System.getProperty("java.home").endsWith("jre")) {
 306                 cmd = System.getProperty("java.home") + "/../bin/jarsigner";
 307             } else {
 308                 cmd = System.getProperty("java.home") + "/bin/jarsigner";
 309             }
 310 
 311             cmd += " -J-Djava.security.egd=file:/dev/./urandom"
 312                     + " -debug -keystore " + TSKS + " -storepass changeit"
 313                     + " -tsa http://localhost:" + port + "/%d"
 314                     + " -signedjar new_%d.jar " + JAR + " old";
 315 
 316             if (args.length == 0) {         // Run this test
 317                 jarsigner(cmd, 0, true);    // Success, normal call
 318                 jarsigner(cmd, 1, false);   // These 4 should fail
 319                 jarsigner(cmd, 2, false);
 320                 jarsigner(cmd, 3, false);
 321                 jarsigner(cmd, 4, false);
 322                 jarsigner(cmd, 5, true);    // Success, 6543440 solved.
 323                 jarsigner(cmd, 6, false);   // tsbad1
 324                 jarsigner(cmd, 7, false);   // tsbad2
 325                 jarsigner(cmd, 8, false);   // tsbad3
 326                 jarsigner(cmd, 9, false);   // no cert in timestamp
 327                 jarsigner(cmd + " -tsapolicyid 1.2.3.4", 10, true);
 328                 checkTimestamp("new_10.jar", "1.2.3.4", "SHA-256");
 329                 jarsigner(cmd + " -tsapolicyid 1.2.3.5", 11, false);
 330                 jarsigner(cmd + " -tsadigestalg SHA", 12, true);
 331                 checkTimestamp("new_12.jar", defaultPolicyId, "SHA-1");
 332             } else {                        // Run as a standalone server
 333                 System.err.println("Press Enter to quit server");
 334                 System.in.read();
 335             }
 336         }
 337     }
 338 
 339     static void checkTimestamp(String file, String policyId, String digestAlg)
 340             throws Exception {
 341         try (JarFile jf = new JarFile(file)) {
 342             JarEntry je = jf.getJarEntry("META-INF/OLD.RSA");
 343             try (InputStream is = jf.getInputStream(je)) {
 344                 byte[] content = IOUtils.readFully(is, -1, true);
 345                 PKCS7 p7 = new PKCS7(content);
 346                 SignerInfo[] si = p7.getSignerInfos();
 347                 if (si == null || si.length == 0) {
 348                     throw new Exception("Not signed");
 349                 }
 350                 PKCS9Attribute p9 = si[0].getUnauthenticatedAttributes()
 351                         .getAttribute(PKCS9Attribute.SIGNATURE_TIMESTAMP_TOKEN_OID);
 352                 PKCS7 tsToken = new PKCS7((byte[]) p9.getValue());
 353                 TimestampToken tt =
 354                         new TimestampToken(tsToken.getContentInfo().getData());
 355                 if (!tt.getHashAlgorithm().toString().equals(digestAlg)) {
 356                     throw new Exception("Digest alg different");
 357                 }
 358                 if (!tt.getPolicyID().equals(policyId)) {
 359                     throw new Exception("policyId different");
 360                 }
 361             }
 362         }
 363     }
 364 
 365     /**
 366      * @param cmd the command line (with a hole to plug in)
 367      * @param path the path in the URL, i.e, http://localhost/path
 368      * @param expected if this command should succeed
 369      */
 370     static void jarsigner(String cmd, int path, boolean expected)
 371             throws Exception {
 372         System.err.println("Test " + path);
 373         Process p = Runtime.getRuntime().exec(String.format(cmd, path, path));
 374         BufferedReader reader = new BufferedReader(
 375                 new InputStreamReader(p.getErrorStream()));
 376         while (true) {
 377             String s = reader.readLine();
 378             if (s == null) break;
 379             System.err.println(s);
 380         }
 381 
 382         // Will not see noTimestamp warning
 383         boolean seeWarning = false;
 384         reader = new BufferedReader(
 385                 new InputStreamReader(p.getInputStream()));
 386         while (true) {
 387             String s = reader.readLine();
 388             if (s == null) break;
 389             System.err.println(s);
 390             if (s.indexOf("Warning:") >= 0) {
 391                 seeWarning = true;
 392             }
 393         }
 394         int result = p.waitFor();
 395         if (expected && result != 0 || !expected && result == 0) {
 396             throw new Exception("Failed");
 397         }
 398         if (seeWarning) {
 399             throw new Exception("See warning");
 400         }
 401     }
 402 }