Showing the changes to java/pkg/sun/tools/jar/SignatureFile.java (1 of 18352 files). Show all
Unified · Split
| @@ -0,0 +1,361 @@ | ||
| 1 | +/* | |
| 2 | + * Copyright (c) 1996, 2009, 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. Oracle designates this | |
| 8 | + * particular file as subject to the "Classpath" exception as provided | |
| 9 | + * by Oracle in the LICENSE file that accompanied this code. | |
| 10 | + * | |
| 11 | + * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 12 | + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 13 | + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 14 | + * version 2 for more details (a copy is included in the LICENSE file that | |
| 15 | + * accompanied this code). | |
| 16 | + * | |
| 17 | + * You should have received a copy of the GNU General Public License version | |
| 18 | + * 2 along with this work; if not, write to the Free Software Foundation, | |
| 19 | + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 20 | + * | |
| 21 | + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 22 | + * or visit www.oracle.com if you need additional information or have any | |
| 23 | + * questions. | |
| 24 | + */ | |
| 25 | + | |
| 26 | +package sun.tools.jar; | |
| 27 | + | |
| 28 | +import java.io.*; | |
| 29 | +import java.util.*; | |
| 30 | +import java.security.*; | |
| 31 | + | |
| 32 | +import sun.net.www.MessageHeader; | |
| 33 | +import sun.misc.BASE64Encoder; | |
| 34 | +import sun.misc.BASE64Decoder; | |
| 35 | + | |
| 36 | +import sun.security.pkcs.*; | |
| 37 | +import sun.security.x509.AlgorithmId; | |
| 38 | + | |
| 39 | +/** | |
| 40 | + * <p>A signature file as defined in the <a | |
| 41 | + * href="manifest.html">Manifest and Signature Format</a>. It has | |
| 42 | + * essentially the same structure as a Manifest file in that it is a | |
| 43 | + * set of RFC 822 headers (sections). The first section contains meta | |
| 44 | + * data relevant to the entire file (i.e "Signature-Version:1.0") and | |
| 45 | + * each subsequent section contains data relevant to specific entries: | |
| 46 | + * entry sections. | |
| 47 | + * | |
| 48 | + * <p>Each entry section contains the name of an entry (which must | |
| 49 | + * have a counterpart in the manifest). Like the manifest it contains | |
| 50 | + * a hash, the hash of the manifest section correspondind to the | |
| 51 | + * name. Since the manifest entry contains the hash of the data, this | |
| 52 | + * is equivalent to a signature of the data, plus the attributes of | |
| 53 | + * the manifest entry. | |
| 54 | + * | |
| 55 | + * <p>This signature file format deal with PKCS7 encoded DSA signature | |
| 56 | + * block. It should be straightforward to extent to support other | |
| 57 | + * algorithms. | |
| 58 | + * | |
| 59 | + * @author David Brown | |
| 60 | + * @author Benjamin Renaud */ | |
| 61 | + | |
| 62 | +public class SignatureFile { | |
| 63 | + | |
| 64 | + /* Are we debugging? */ | |
| 65 | + static final boolean debug = false; | |
| 66 | + | |
| 67 | + /* list of headers that all pertain to a particular file in the | |
| 68 | + * archive */ | |
| 69 | + private Vector entries = new Vector(); | |
| 70 | + | |
| 71 | + /* Right now we only support SHA hashes */ | |
| 72 | + static final String[] hashes = {"SHA"}; | |
| 73 | + | |
| 74 | + static final void debug(String s) { | |
| 75 | + if (debug) | |
| 76 | + System.out.println("sig> " + s); | |
| 77 | + } | |
| 78 | + | |
| 79 | + /* | |
| 80 | + * The manifest we're working with. */ | |
| 81 | + private Manifest manifest; | |
| 82 | + | |
| 83 | + /* | |
| 84 | + * The file name for the file. This is the raw name, i.e. the | |
| 85 | + * extention-less 8 character name (such as MYSIGN) which wil be | |
| 86 | + * used to build the signature filename (MYSIGN.SF) and the block | |
| 87 | + * filename (MYSIGN.DSA) */ | |
| 88 | + private String rawName; | |
| 89 | + | |
| 90 | + /* The digital signature block corresponding to this signature | |
| 91 | + * file. */ | |
| 92 | + private PKCS7 signatureBlock; | |
| 93 | + | |
| 94 | + | |
| 95 | + /** | |
| 96 | + * Private constructor which takes a name a given signature | |
| 97 | + * file. The name must be extension-less and less or equal to 8 | |
| 98 | + * character in length. */ | |
| 99 | + private SignatureFile(String name) throws JarException { | |
| 100 | + | |
| 101 | + entries = new Vector(); | |
| 102 | + | |
| 103 | + if (name != null) { | |
| 104 | + if (name.length() > 8 || name.indexOf('.') != -1) { | |
| 105 | + throw new JarException("invalid file name"); | |
| 106 | + } | |
| 107 | + rawName = name.toUpperCase(Locale.ENGLISH); | |
| 108 | + } | |
| 109 | + } | |
| 110 | + | |
| 111 | + /** | |
| 112 | + * Private constructor which takes a name a given signature file | |
| 113 | + * and a new file predicate. If it is a new file, a main header | |
| 114 | + * will be added. */ | |
| 115 | + private SignatureFile(String name, boolean newFile) | |
| 116 | + throws JarException { | |
| 117 | + | |
| 118 | + this(name); | |
| 119 | + | |
| 120 | + if (newFile) { | |
| 121 | + MessageHeader globals = new MessageHeader(); | |
| 122 | + globals.set("Signature-Version", "1.0"); | |
| 123 | + entries.addElement(globals); | |
| 124 | + } | |
| 125 | + } | |
| 126 | + | |
| 127 | + /** | |
| 128 | + * Constructs a new Signature file corresponding to a given | |
| 129 | + * Manifest. All entries in the manifest are signed. | |
| 130 | + * | |
| 131 | + * @param manifest the manifest to use. | |
| 132 | + * | |
| 133 | + * @param name for this signature file. This should | |
| 134 | + * be less than 8 characters, and without a suffix (i.e. | |
| 135 | + * without a period in it. | |
| 136 | + * | |
| 137 | + * @exception JarException if an invalid name is passed in. | |
| 138 | + */ | |
| 139 | + public SignatureFile(Manifest manifest, String name) | |
| 140 | + throws JarException { | |
| 141 | + | |
| 142 | + this(name, true); | |
| 143 | + | |
| 144 | + this.manifest = manifest; | |
| 145 | + Enumeration enum_ = manifest.entries(); | |
| 146 | + while (enum_.hasMoreElements()) { | |
| 147 | + MessageHeader mh = (MessageHeader)enum_.nextElement(); | |
| 148 | + String entryName = mh.findValue("Name"); | |
| 149 | + if (entryName != null) { | |
| 150 | + add(entryName); | |
| 151 | + } | |
| 152 | + } | |
| 153 | + } | |
| 154 | + | |
| 155 | + /** | |
| 156 | + * Constructs a new Signature file corresponding to a given | |
| 157 | + * Manifest. Specific entries in the manifest are signed. | |
| 158 | + * | |
| 159 | + * @param manifest the manifest to use. | |
| 160 | + * | |
| 161 | + * @param entries the entries to sign. | |
| 162 | + * | |
| 163 | + * @param filename for this signature file. This should | |
| 164 | + * be less than 8 characters, and without a suffix (i.e. | |
| 165 | + * without a period in it. | |
| 166 | + * | |
| 167 | + * @exception JarException if an invalid name is passed in. | |
| 168 | + */ | |
| 169 | + public SignatureFile(Manifest manifest, String[] entries, | |
| 170 | + String filename) | |
| 171 | + throws JarException { | |
| 172 | + this(filename, true); | |
| 173 | + this.manifest = manifest; | |
| 174 | + add(entries); | |
| 175 | + } | |
| 176 | + | |
| 177 | + /** | |
| 178 | + * Construct a Signature file from an input stream. | |
| 179 | + * | |
| 180 | + * @exception IOException if an invalid name is passed in or if a | |
| 181 | + * stream exception occurs. | |
| 182 | + */ | |
| 183 | + public SignatureFile(InputStream is, String filename) | |
| 184 | + throws IOException { | |
| 185 | + this(filename); | |
| 186 | + while (is.available() > 0) { | |
| 187 | + MessageHeader m = new MessageHeader(is); | |
| 188 | + entries.addElement(m); | |
| 189 | + } | |
| 190 | + } | |
| 191 | + | |
| 192 | + /** | |
| 193 | + * Construct a Signature file from an input stream. | |
| 194 | + * | |
| 195 | + * @exception IOException if an invalid name is passed in or if a | |
| 196 | + * stream exception occurs. | |
| 197 | + */ | |
| 198 | + public SignatureFile(InputStream is) throws IOException { | |
| 199 | + this(is, null); | |
| 200 | + } | |
| 201 | + | |
| 202 | + public SignatureFile(byte[] bytes) throws IOException { | |
| 203 | + this(new ByteArrayInputStream(bytes)); | |
| 204 | + } | |
| 205 | + | |
| 206 | + /** | |
| 207 | + * Returns the name of the signature file, ending with a ".SF" | |
| 208 | + * suffix */ | |
| 209 | + public String getName() { | |
| 210 | + return "META-INF/" + rawName + ".SF"; | |
| 211 | + } | |
| 212 | + | |
| 213 | + /** | |
| 214 | + * Returns the name of the block file, ending with a block suffix | |
| 215 | + * such as ".DSA". */ | |
| 216 | + public String getBlockName() { | |
| 217 | + String suffix = "DSA"; | |
| 218 | + if (signatureBlock != null) { | |
| 219 | + SignerInfo info = signatureBlock.getSignerInfos()[0]; | |
| 220 | + suffix = info.getDigestEncryptionAlgorithmId().getName(); | |
| 221 | + String temp = AlgorithmId.getEncAlgFromSigAlg(suffix); | |
| 222 | + if (temp != null) suffix = temp; | |
| 223 | + } | |
| 224 | + return "META-INF/" + rawName + "." + suffix; | |
| 225 | + } | |
| 226 | + | |
| 227 | + /** | |
| 228 | + * Returns the signature block associated with this file. | |
| 229 | + */ | |
| 230 | + public PKCS7 getBlock() { | |
| 231 | + return signatureBlock; | |
| 232 | + } | |
| 233 | + | |
| 234 | + /** | |
| 235 | + * Sets the signature block associated with this file. | |
| 236 | + */ | |
| 237 | + public void setBlock(PKCS7 block) { | |
| 238 | + this.signatureBlock = block; | |
| 239 | + } | |
| 240 | + | |
| 241 | + /** | |
| 242 | + * Add a set of entries from the current manifest. | |
| 243 | + */ | |
| 244 | + public void add(String[] entries) throws JarException { | |
| 245 | + for (int i = 0; i < entries.length; i++) { | |
| 246 | + add (entries[i]); | |
| 247 | + } | |
| 248 | + } | |
| 249 | + | |
| 250 | + /** | |
| 251 | + * Add a specific entry from the current manifest. | |
| 252 | + */ | |
| 253 | + public void add(String entry) throws JarException { | |
| 254 | + MessageHeader mh = manifest.getEntry(entry); | |
| 255 | + if (mh == null) { | |
| 256 | + throw new JarException("entry " + entry + " not in manifest"); | |
| 257 | + } | |
| 258 | + MessageHeader smh; | |
| 259 | + try { | |
| 260 | + smh = computeEntry(mh); | |
| 261 | + } catch (IOException e) { | |
| 262 | + throw new JarException(e.getMessage()); | |
| 263 | + } | |
| 264 | + entries.addElement(smh); | |
| 265 | + } | |
| 266 | + | |
| 267 | + /** | |
| 268 | + * Get the entry corresponding to a given name. Returns null if | |
| 269 | + *the entry does not exist. | |
| 270 | + */ | |
| 271 | + public MessageHeader getEntry(String name) { | |
| 272 | + Enumeration enum_ = entries(); | |
| 273 | + while(enum_.hasMoreElements()) { | |
| 274 | + MessageHeader mh = (MessageHeader)enum_.nextElement(); | |
| 275 | + if (name.equals(mh.findValue("Name"))) { | |
| 276 | + return mh; | |
| 277 | + } | |
| 278 | + } | |
| 279 | + return null; | |
| 280 | + } | |
| 281 | + | |
| 282 | + /** | |
| 283 | + * Returns the n-th entry. The global header is a entry 0. */ | |
| 284 | + public MessageHeader entryAt(int n) { | |
| 285 | + return (MessageHeader) entries.elementAt(n); | |
| 286 | + } | |
| 287 | + | |
| 288 | + /** | |
| 289 | + * Returns an enumeration of the entries. | |
| 290 | + */ | |
| 291 | + public Enumeration entries() { | |
| 292 | + return entries.elements(); | |
| 293 | + } | |
| 294 | + | |
| 295 | + /** | |
| 296 | + * Given a manifest entry, computes the signature entry for this | |
| 297 | + * manifest entry. | |
| 298 | + */ | |
| 299 | + private MessageHeader computeEntry(MessageHeader mh) throws IOException { | |
| 300 | + MessageHeader smh = new MessageHeader(); | |
| 301 | + | |
| 302 | + String name = mh.findValue("Name"); | |
| 303 | + if (name == null) { | |
| 304 | + return null; | |
| 305 | + } | |
| 306 | + smh.set("Name", name); | |
| 307 | + | |
| 308 | + BASE64Encoder encoder = new BASE64Encoder(); | |
| 309 | + try { | |
| 310 | + for (int i = 0; i < hashes.length; ++i) { | |
| 311 | + MessageDigest dig = getDigest(hashes[i]); | |
| 312 | + ByteArrayOutputStream baos = new ByteArrayOutputStream(); | |
| 313 | + PrintStream ps = new PrintStream(baos); | |
| 314 | + mh.print(ps); | |
| 315 | + byte[] headerBytes = baos.toByteArray(); | |
| 316 | + byte[] digest = dig.digest(headerBytes); | |
| 317 | + smh.set(hashes[i] + "-Digest", encoder.encode(digest)); | |
| 318 | + } | |
| 319 | + return smh; | |
| 320 | + } catch (NoSuchAlgorithmException e) { | |
| 321 | + throw new JarException(e.getMessage()); | |
| 322 | + } | |
| 323 | + } | |
| 324 | + | |
| 325 | + private Hashtable digests = new Hashtable(); | |
| 326 | + | |
| 327 | + private MessageDigest getDigest(String algorithm) | |
| 328 | + throws NoSuchAlgorithmException { | |
| 329 | + MessageDigest dig = (MessageDigest)digests.get(algorithm); | |
| 330 | + if (dig == null) { | |
| 331 | + dig = MessageDigest.getInstance(algorithm); | |
| 332 | + digests.put(algorithm, dig); | |
| 333 | + } | |
| 334 | + dig.reset(); | |
| 335 | + return dig; | |
| 336 | + } | |
| 337 | + | |
| 338 | + | |
| 339 | + /** | |
| 340 | + * Add a signature file at current position in a stream | |
| 341 | + */ | |
| 342 | + public void stream(OutputStream os) throws IOException { | |
| 343 | + | |
| 344 | + /* the first header in the file should be the global one. | |
| 345 | + * It should say "SignatureFile-Version: x.x"; barf if not | |
| 346 | + */ | |
| 347 | + MessageHeader globals = (MessageHeader) entries.elementAt(0); | |
| 348 | + if (globals.findValue("Signature-Version") == null) { | |
| 349 | + throw new JarException("Signature file requires " + | |
| 350 | + "Signature-Version: 1.0 in 1st header"); | |
| 351 | + } | |
| 352 | + | |
| 353 | + PrintStream ps = new PrintStream(os); | |
| 354 | + globals.print(ps); | |
| 355 | + | |
| 356 | + for (int i = 1; i < entries.size(); ++i) { | |
| 357 | + MessageHeader mh = (MessageHeader) entries.elementAt(i); | |
| 358 | + mh.print(ps); | |
| 359 | + } | |
| 360 | + } | |
| 361 | +} | |