J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1999-2007 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. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | package javax.crypto; |
| 27 | |
| 28 | import java.io.*; |
| 29 | import java.util.Enumeration; |
| 30 | import java.util.Hashtable; |
| 31 | import java.util.Vector; |
| 32 | import java.util.StringTokenizer; |
| 33 | import static java.util.Locale.ENGLISH; |
| 34 | |
| 35 | import java.security.GeneralSecurityException; |
| 36 | import java.security.spec.AlgorithmParameterSpec; |
| 37 | import java.lang.reflect.*; |
| 38 | |
| 39 | /** |
| 40 | * JCE has two pairs of jurisdiction policy files: one represents U.S. export |
| 41 | * laws, and the other represents the local laws of the country where the |
| 42 | * JCE will be used. |
| 43 | * |
| 44 | * The jurisdiction policy file has the same syntax as JDK policy files except |
| 45 | * that JCE has new permission classes called javax.crypto.CryptoPermission |
| 46 | * and javax.crypto.CryptoAllPermission. |
| 47 | * |
| 48 | * The format of a permission entry in the jurisdiction policy file is: |
| 49 | * |
| 50 | * permission <crypto permission class name>[, <algorithm name> |
| 51 | * [[, <exemption mechanism name>][, <maxKeySize> |
| 52 | * [, <AlgrithomParameterSpec class name>, <parameters |
| 53 | * for constructing an AlgrithomParameterSpec object>]]]]; |
| 54 | * |
| 55 | * @author Sharon Liu |
| 56 | * |
| 57 | * @see java.security.Permissions |
| 58 | * @see java.security.spec.AlgrithomParameterSpec |
| 59 | * @see javax.crypto.CryptoPermission |
| 60 | * @see javax.crypto.CryptoAllPermission |
| 61 | * @see javax.crypto.CryptoPermissions |
| 62 | * @since 1.4 |
| 63 | */ |
| 64 | |
| 65 | final class CryptoPolicyParser { |
| 66 | |
| 67 | private Vector grantEntries; |
| 68 | |
| 69 | // Convenience variables for parsing |
| 70 | private StreamTokenizer st; |
| 71 | private int lookahead; |
| 72 | |
| 73 | /** |
| 74 | * Creates a CryptoPolicyParser object. |
| 75 | */ |
| 76 | CryptoPolicyParser() { |
| 77 | grantEntries = new Vector(); |
| 78 | } |
| 79 | |
| 80 | /** |
| 81 | * Reads a policy configuration using a Reader object. <p> |
| 82 | * |
| 83 | * @param policy the policy Reader object. |
| 84 | * |
| 85 | * @exception ParsingException if the policy configuration |
| 86 | * contains a syntax error. |
| 87 | * |
| 88 | * @exception IOException if an error occurs while reading |
| 89 | * the policy configuration. |
| 90 | */ |
| 91 | |
| 92 | void read(Reader policy) |
| 93 | throws ParsingException, IOException |
| 94 | { |
| 95 | if (!(policy instanceof BufferedReader)) { |
| 96 | policy = new BufferedReader(policy); |
| 97 | } |
| 98 | |
| 99 | /* |
| 100 | * Configure the stream tokenizer: |
| 101 | * Recognize strings between "..." |
| 102 | * Don't convert words to lowercase |
| 103 | * Recognize both C-style and C++-style comments |
| 104 | * Treat end-of-line as white space, not as a token |
| 105 | */ |
| 106 | st = new StreamTokenizer(policy); |
| 107 | |
| 108 | st.resetSyntax(); |
| 109 | st.wordChars('a', 'z'); |
| 110 | st.wordChars('A', 'Z'); |
| 111 | st.wordChars('.', '.'); |
| 112 | st.wordChars('0', '9'); |
| 113 | st.wordChars('_', '_'); |
| 114 | st.wordChars('$', '$'); |
| 115 | st.wordChars(128 + 32, 255); |
| 116 | st.whitespaceChars(0, ' '); |
| 117 | st.commentChar('/'); |
| 118 | st.quoteChar('\''); |
| 119 | st.quoteChar('"'); |
| 120 | st.lowerCaseMode(false); |
| 121 | st.ordinaryChar('/'); |
| 122 | st.slashSlashComments(true); |
| 123 | st.slashStarComments(true); |
| 124 | st.parseNumbers(); |
| 125 | |
| 126 | /* |
| 127 | * The crypto jurisdiction policy must be consistent. The |
| 128 | * following hashtable is used for checking consistency. |
| 129 | */ |
| 130 | Hashtable processedPermissions = null; |
| 131 | |
| 132 | /* |
| 133 | * The main parsing loop. The loop is executed once for each entry |
| 134 | * in the policy file. The entries are delimited by semicolons. Once |
| 135 | * we've read in the information for an entry, go ahead and try to |
| 136 | * add it to the grantEntries. |
| 137 | */ |
| 138 | lookahead = st.nextToken(); |
| 139 | while (lookahead != StreamTokenizer.TT_EOF) { |
| 140 | if (peek("grant")) { |
| 141 | GrantEntry ge = parseGrantEntry(processedPermissions); |
| 142 | if (ge != null) |
| 143 | grantEntries.addElement(ge); |
| 144 | } else { |
| 145 | throw new ParsingException(st.lineno(), "expected grant " + |
| 146 | "statement"); |
| 147 | } |
| 148 | match(";"); |
| 149 | } |
| 150 | } |
| 151 | |
| 152 | /** |
| 153 | * parse a Grant entry |
| 154 | */ |
| 155 | private GrantEntry parseGrantEntry(Hashtable processedPermissions) |
| 156 | throws ParsingException, IOException |
| 157 | { |
| 158 | GrantEntry e = new GrantEntry(); |
| 159 | |
| 160 | match("grant"); |
| 161 | match("{"); |
| 162 | |
| 163 | while(!peek("}")) { |
| 164 | if (peek("Permission")) { |
| 165 | CryptoPermissionEntry pe = |
| 166 | parsePermissionEntry(processedPermissions); |
| 167 | e.add(pe); |
| 168 | match(";"); |
| 169 | } else { |
| 170 | throw new |
| 171 | ParsingException(st.lineno(), "expected permission entry"); |
| 172 | } |
| 173 | } |
| 174 | match("}"); |
| 175 | |
| 176 | return e; |
| 177 | } |
| 178 | |
| 179 | /** |
| 180 | * parse a CryptoPermission entry |
| 181 | */ |
| 182 | private CryptoPermissionEntry parsePermissionEntry( |
| 183 | Hashtable processedPermissions) |
| 184 | throws ParsingException, IOException |
| 185 | { |
| 186 | CryptoPermissionEntry e = new CryptoPermissionEntry(); |
| 187 | |
| 188 | match("Permission"); |
| 189 | e.cryptoPermission = match("permission type"); |
| 190 | |
| 191 | if (e.cryptoPermission.equals("javax.crypto.CryptoAllPermission")) { |
| 192 | // Done with the CryptoAllPermission entry. |
| 193 | e.alg = CryptoAllPermission.ALG_NAME; |
| 194 | e.maxKeySize = Integer.MAX_VALUE; |
| 195 | return e; |
| 196 | } |
| 197 | |
| 198 | // Should see the algorithm name. |
| 199 | if (peek("\"")) { |
| 200 | // Algorithm name - always convert to upper case after parsing. |
| 201 | e.alg = match("quoted string").toUpperCase(ENGLISH); |
| 202 | } else { |
| 203 | // The algorithm name can be a wildcard. |
| 204 | if (peek("*")) { |
| 205 | match("*"); |
| 206 | e.alg = CryptoPermission.ALG_NAME_WILDCARD; |
| 207 | } else { |
| 208 | throw new ParsingException(st.lineno(), |
| 209 | "Missing the algorithm name"); |
| 210 | } |
| 211 | } |
| 212 | |
| 213 | peekAndMatch(","); |
| 214 | |
| 215 | // May see the exemption mechanism name. |
| 216 | if (peek("\"")) { |
| 217 | // Exemption mechanism name - convert to upper case too. |
| 218 | e.exemptionMechanism = match("quoted string").toUpperCase(ENGLISH); |
| 219 | } |
| 220 | |
| 221 | peekAndMatch(","); |
| 222 | |
| 223 | // Check whether this entry is consistent with other permission entries |
| 224 | // that have been read. |
| 225 | if (!isConsistent(e.alg, e.exemptionMechanism, processedPermissions)) { |
| 226 | throw new ParsingException(st.lineno(), "Inconsistent policy"); |
| 227 | } |
| 228 | |
| 229 | // Should see the maxKeySize if not at the end of this entry yet. |
| 230 | if (peek("number")) { |
| 231 | e.maxKeySize = match(); |
| 232 | } else { |
| 233 | if (peek("*")) { |
| 234 | match("*"); |
| 235 | e.maxKeySize = Integer.MAX_VALUE; |
| 236 | } else { |
| 237 | if (!peek(";")) { |
| 238 | throw new ParsingException(st.lineno(), |
| 239 | "Missing the maximum " + |
| 240 | "allowable key size"); |
| 241 | } else { |
| 242 | // At the end of this permission entry |
| 243 | e.maxKeySize = Integer.MAX_VALUE; |
| 244 | } |
| 245 | } |
| 246 | } |
| 247 | |
| 248 | peekAndMatch(","); |
| 249 | |
| 250 | // May see an AlgorithmParameterSpec class name. |
| 251 | if (peek("\"")) { |
| 252 | // AlgorithmParameterSpec class name. |
| 253 | String algParamSpecClassName = match("quoted string"); |
| 254 | |
| 255 | Vector paramsV = new Vector(1); |
| 256 | while (peek(",")) { |
| 257 | match(","); |
| 258 | if (peek("number")) { |
| 259 | paramsV.addElement(new Integer(match())); |
| 260 | } else { |
| 261 | if (peek("*")) { |
| 262 | match("*"); |
| 263 | paramsV.addElement(new Integer(Integer.MAX_VALUE)); |
| 264 | } else { |
| 265 | throw new ParsingException(st.lineno(), |
| 266 | "Expecting an integer"); |
| 267 | } |
| 268 | } |
| 269 | } |
| 270 | |
| 271 | Integer[] params = new Integer[paramsV.size()]; |
| 272 | paramsV.copyInto(params); |
| 273 | |
| 274 | e.checkParam = true; |
| 275 | e.algParamSpec = getInstance(algParamSpecClassName, params); |
| 276 | } |
| 277 | |
| 278 | return e; |
| 279 | } |
| 280 | |
| 281 | private static final AlgorithmParameterSpec getInstance(String type, |
| 282 | Integer[] params) |
| 283 | throws ParsingException |
| 284 | { |
| 285 | AlgorithmParameterSpec ret = null; |
| 286 | |
| 287 | try { |
| 288 | Class apsClass = Class.forName(type); |
| 289 | Class[] paramClasses = new Class[params.length]; |
| 290 | |
| 291 | for (int i = 0; i < params.length; i++) { |
| 292 | paramClasses[i] = int.class; |
| 293 | } |
| 294 | |
| 295 | Constructor c = apsClass.getConstructor(paramClasses); |
| 296 | ret = (AlgorithmParameterSpec) c.newInstance((Object[]) params); |
| 297 | } catch (Exception e) { |
| 298 | throw new ParsingException("Cannot call the constructor of " + |
| 299 | type + e); |
| 300 | } |
| 301 | return ret; |
| 302 | } |
| 303 | |
| 304 | |
| 305 | private boolean peekAndMatch(String expect) |
| 306 | throws ParsingException, IOException |
| 307 | { |
| 308 | if (peek(expect)) { |
| 309 | match(expect); |
| 310 | return true; |
| 311 | } |
| 312 | return false; |
| 313 | } |
| 314 | |
| 315 | private boolean peek(String expect) { |
| 316 | boolean found = false; |
| 317 | |
| 318 | switch (lookahead) { |
| 319 | |
| 320 | case StreamTokenizer.TT_WORD: |
| 321 | if (expect.equalsIgnoreCase(st.sval)) |
| 322 | found = true; |
| 323 | break; |
| 324 | case StreamTokenizer.TT_NUMBER: |
| 325 | if (expect.equalsIgnoreCase("number")) { |
| 326 | found = true; |
| 327 | } |
| 328 | break; |
| 329 | case ',': |
| 330 | if (expect.equals(",")) |
| 331 | found = true; |
| 332 | break; |
| 333 | case '{': |
| 334 | if (expect.equals("{")) |
| 335 | found = true; |
| 336 | break; |
| 337 | case '}': |
| 338 | if (expect.equals("}")) |
| 339 | found = true; |
| 340 | break; |
| 341 | case '"': |
| 342 | if (expect.equals("\"")) |
| 343 | found = true; |
| 344 | break; |
| 345 | case '*': |
| 346 | if (expect.equals("*")) |
| 347 | found = true; |
| 348 | break; |
| 349 | case ';': |
| 350 | if (expect.equals(";")) |
| 351 | found = true; |
| 352 | break; |
| 353 | default: |
| 354 | break; |
| 355 | } |
| 356 | return found; |
| 357 | } |
| 358 | |
| 359 | /** |
| 360 | * Excepts to match a non-negative number. |
| 361 | */ |
| 362 | private int match() |
| 363 | throws ParsingException, IOException |
| 364 | { |
| 365 | int value = -1; |
| 366 | int lineno = st.lineno(); |
| 367 | String sValue = null; |
| 368 | |
| 369 | switch (lookahead) { |
| 370 | case StreamTokenizer.TT_NUMBER: |
| 371 | value = (int)st.nval; |
| 372 | if (value < 0) { |
| 373 | sValue = String.valueOf(st.nval); |
| 374 | } |
| 375 | lookahead = st.nextToken(); |
| 376 | break; |
| 377 | default: |
| 378 | sValue = st.sval; |
| 379 | break; |
| 380 | } |
| 381 | if (value <= 0) { |
| 382 | throw new ParsingException(lineno, "a non-negative number", |
| 383 | sValue); |
| 384 | } |
| 385 | return value; |
| 386 | } |
| 387 | |
| 388 | private String match(String expect) |
| 389 | throws ParsingException, IOException |
| 390 | { |
| 391 | String value = null; |
| 392 | |
| 393 | switch (lookahead) { |
| 394 | case StreamTokenizer.TT_NUMBER: |
| 395 | throw new ParsingException(st.lineno(), expect, |
| 396 | "number "+String.valueOf(st.nval)); |
| 397 | case StreamTokenizer.TT_EOF: |
| 398 | throw new ParsingException("expected "+expect+", read end of file"); |
| 399 | case StreamTokenizer.TT_WORD: |
| 400 | if (expect.equalsIgnoreCase(st.sval)) { |
| 401 | lookahead = st.nextToken(); |
| 402 | } |
| 403 | else if (expect.equalsIgnoreCase("permission type")) { |
| 404 | value = st.sval; |
| 405 | lookahead = st.nextToken(); |
| 406 | } |
| 407 | else |
| 408 | throw new ParsingException(st.lineno(), expect, st.sval); |
| 409 | break; |
| 410 | case '"': |
| 411 | if (expect.equalsIgnoreCase("quoted string")) { |
| 412 | value = st.sval; |
| 413 | lookahead = st.nextToken(); |
| 414 | } else if (expect.equalsIgnoreCase("permission type")) { |
| 415 | value = st.sval; |
| 416 | lookahead = st.nextToken(); |
| 417 | } |
| 418 | else |
| 419 | throw new ParsingException(st.lineno(), expect, st.sval); |
| 420 | break; |
| 421 | case ',': |
| 422 | if (expect.equals(",")) |
| 423 | lookahead = st.nextToken(); |
| 424 | else |
| 425 | throw new ParsingException(st.lineno(), expect, ","); |
| 426 | break; |
| 427 | case '{': |
| 428 | if (expect.equals("{")) |
| 429 | lookahead = st.nextToken(); |
| 430 | else |
| 431 | throw new ParsingException(st.lineno(), expect, "{"); |
| 432 | break; |
| 433 | case '}': |
| 434 | if (expect.equals("}")) |
| 435 | lookahead = st.nextToken(); |
| 436 | else |
| 437 | throw new ParsingException(st.lineno(), expect, "}"); |
| 438 | break; |
| 439 | case ';': |
| 440 | if (expect.equals(";")) |
| 441 | lookahead = st.nextToken(); |
| 442 | else |
| 443 | throw new ParsingException(st.lineno(), expect, ";"); |
| 444 | break; |
| 445 | case '*': |
| 446 | if (expect.equals("*")) |
| 447 | lookahead = st.nextToken(); |
| 448 | else |
| 449 | throw new ParsingException(st.lineno(), expect, "*"); |
| 450 | break; |
| 451 | default: |
| 452 | throw new ParsingException(st.lineno(), expect, |
| 453 | new String(new char[] {(char)lookahead})); |
| 454 | } |
| 455 | return value; |
| 456 | } |
| 457 | |
| 458 | CryptoPermission[] getPermissions() { |
| 459 | Vector result = new Vector(); |
| 460 | |
| 461 | Enumeration grantEnum = grantEntries.elements(); |
| 462 | while (grantEnum.hasMoreElements()) { |
| 463 | GrantEntry ge = (GrantEntry)grantEnum.nextElement(); |
| 464 | Enumeration permEnum = ge.permissionElements(); |
| 465 | while (permEnum.hasMoreElements()) { |
| 466 | CryptoPermissionEntry pe = |
| 467 | (CryptoPermissionEntry)permEnum.nextElement(); |
| 468 | if (pe.cryptoPermission.equals( |
| 469 | "javax.crypto.CryptoAllPermission")) { |
| 470 | result.addElement(CryptoAllPermission.INSTANCE); |
| 471 | } else { |
| 472 | if (pe.checkParam) { |
| 473 | result.addElement(new CryptoPermission( |
| 474 | pe.alg, |
| 475 | pe.maxKeySize, |
| 476 | pe.algParamSpec, |
| 477 | pe.exemptionMechanism)); |
| 478 | } else { |
| 479 | result.addElement(new CryptoPermission( |
| 480 | pe.alg, |
| 481 | pe.maxKeySize, |
| 482 | pe.exemptionMechanism)); |
| 483 | } |
| 484 | } |
| 485 | } |
| 486 | } |
| 487 | |
| 488 | CryptoPermission[] ret = new CryptoPermission[result.size()]; |
| 489 | result.copyInto(ret); |
| 490 | |
| 491 | return ret; |
| 492 | } |
| 493 | |
| 494 | private boolean isConsistent(String alg, |
| 495 | String exemptionMechanism, |
| 496 | Hashtable processedPermissions) { |
| 497 | String thisExemptionMechanism = |
| 498 | exemptionMechanism == null ? "none" : exemptionMechanism; |
| 499 | |
| 500 | if (processedPermissions == null) { |
| 501 | processedPermissions = new Hashtable(); |
| 502 | Vector exemptionMechanisms = new Vector(1); |
| 503 | exemptionMechanisms.addElement(thisExemptionMechanism); |
| 504 | processedPermissions.put(alg, exemptionMechanisms); |
| 505 | return true; |
| 506 | } |
| 507 | |
| 508 | if (processedPermissions.containsKey(CryptoAllPermission.ALG_NAME)) { |
| 509 | return false; |
| 510 | } |
| 511 | |
| 512 | Vector exemptionMechanisms; |
| 513 | |
| 514 | if (processedPermissions.containsKey(alg)) { |
| 515 | exemptionMechanisms = (Vector)processedPermissions.get(alg); |
| 516 | if (exemptionMechanisms.contains(thisExemptionMechanism)) { |
| 517 | return false; |
| 518 | } |
| 519 | } else { |
| 520 | exemptionMechanisms = new Vector(1); |
| 521 | } |
| 522 | |
| 523 | exemptionMechanisms.addElement(thisExemptionMechanism); |
| 524 | processedPermissions.put(alg, exemptionMechanisms); |
| 525 | return true; |
| 526 | } |
| 527 | |
| 528 | /** |
| 529 | * Each grant entry in the policy configuration file is represented by a |
| 530 | * GrantEntry object. <p> |
| 531 | * |
| 532 | * <p> |
| 533 | * For example, the entry |
| 534 | * <pre> |
| 535 | * grant { |
| 536 | * permission javax.crypto.CryptoPermission "DES", 56; |
| 537 | * }; |
| 538 | * |
| 539 | * </pre> |
| 540 | * is represented internally |
| 541 | * <pre> |
| 542 | * |
| 543 | * pe = new CryptoPermissionEntry("javax.crypto.CryptoPermission", |
| 544 | * "DES", 56); |
| 545 | * |
| 546 | * ge = new GrantEntry(); |
| 547 | * |
| 548 | * ge.add(pe); |
| 549 | * |
| 550 | * </pre> |
| 551 | * |
| 552 | * @see java.security.Permission |
| 553 | * @see javax.crypto.CryptoPermission |
| 554 | * @see javax.crypto.CryptoPermissions |
| 555 | */ |
| 556 | |
| 557 | private static class GrantEntry { |
| 558 | |
| 559 | private Vector permissionEntries; |
| 560 | |
| 561 | GrantEntry() { |
| 562 | permissionEntries = new Vector(); |
| 563 | } |
| 564 | |
| 565 | void add(CryptoPermissionEntry pe) |
| 566 | { |
| 567 | permissionEntries.addElement(pe); |
| 568 | } |
| 569 | |
| 570 | boolean remove(CryptoPermissionEntry pe) |
| 571 | { |
| 572 | return permissionEntries.removeElement(pe); |
| 573 | } |
| 574 | |
| 575 | boolean contains(CryptoPermissionEntry pe) |
| 576 | { |
| 577 | return permissionEntries.contains(pe); |
| 578 | } |
| 579 | |
| 580 | /** |
| 581 | * Enumerate all the permission entries in this GrantEntry. |
| 582 | */ |
| 583 | Enumeration permissionElements(){ |
| 584 | return permissionEntries.elements(); |
| 585 | } |
| 586 | |
| 587 | } |
| 588 | |
| 589 | /** |
| 590 | * Each crypto permission entry in the policy configuration file is |
| 591 | * represented by a CryptoPermissionEntry object. <p> |
| 592 | * |
| 593 | * <p> |
| 594 | * For example, the entry |
| 595 | * <pre> |
| 596 | * permission javax.crypto.CryptoPermission "DES", 56; |
| 597 | * </pre> |
| 598 | * is represented internally |
| 599 | * <pre> |
| 600 | * |
| 601 | * pe = new CryptoPermissionEntry("javax.crypto.cryptoPermission", |
| 602 | * "DES", 56); |
| 603 | * </pre> |
| 604 | * |
| 605 | * @see java.security.Permissions |
| 606 | * @see javax.crypto.CryptoPermission |
| 607 | * @see javax.crypto.CryptoAllPermission |
| 608 | */ |
| 609 | |
| 610 | private static class CryptoPermissionEntry { |
| 611 | |
| 612 | String cryptoPermission; |
| 613 | String alg; |
| 614 | String exemptionMechanism; |
| 615 | int maxKeySize; |
| 616 | boolean checkParam; |
| 617 | AlgorithmParameterSpec algParamSpec; |
| 618 | |
| 619 | CryptoPermissionEntry() { |
| 620 | // Set default values. |
| 621 | maxKeySize = 0; |
| 622 | alg = null; |
| 623 | exemptionMechanism = null; |
| 624 | checkParam = false; |
| 625 | algParamSpec = null; |
| 626 | } |
| 627 | |
| 628 | /** |
| 629 | * Calculates a hash code value for the object. Objects |
| 630 | * which are equal will also have the same hashcode. |
| 631 | */ |
| 632 | public int hashCode() { |
| 633 | int retval = cryptoPermission.hashCode(); |
| 634 | if (alg != null) retval ^= alg.hashCode(); |
| 635 | if (exemptionMechanism != null) { |
| 636 | retval ^= exemptionMechanism.hashCode(); |
| 637 | } |
| 638 | retval ^= maxKeySize; |
| 639 | if (checkParam) retval ^= 100; |
| 640 | if (algParamSpec != null) { |
| 641 | retval ^= algParamSpec.hashCode(); |
| 642 | } |
| 643 | return retval; |
| 644 | } |
| 645 | |
| 646 | public boolean equals(Object obj) { |
| 647 | if (obj == this) |
| 648 | return true; |
| 649 | |
| 650 | if (!(obj instanceof CryptoPermissionEntry)) |
| 651 | return false; |
| 652 | |
| 653 | CryptoPermissionEntry that = (CryptoPermissionEntry) obj; |
| 654 | |
| 655 | if (this.cryptoPermission == null) { |
| 656 | if (that.cryptoPermission != null) return false; |
| 657 | } else { |
| 658 | if (!this.cryptoPermission.equals( |
| 659 | that.cryptoPermission)) |
| 660 | return false; |
| 661 | } |
| 662 | |
| 663 | if (this.alg == null) { |
| 664 | if (that.alg != null) return false; |
| 665 | } else { |
| 666 | if (!this.alg.equalsIgnoreCase(that.alg)) |
| 667 | return false; |
| 668 | } |
| 669 | |
| 670 | if (!(this.maxKeySize == that.maxKeySize)) return false; |
| 671 | |
| 672 | if (this.checkParam != that.checkParam) return false; |
| 673 | |
| 674 | if (this.algParamSpec == null) { |
| 675 | if (that.algParamSpec != null) return false; |
| 676 | } else { |
| 677 | if (!this.algParamSpec.equals(that.algParamSpec)) |
| 678 | return false; |
| 679 | } |
| 680 | |
| 681 | // everything matched -- the 2 objects are equal |
| 682 | return true; |
| 683 | } |
| 684 | } |
| 685 | |
| 686 | static final class ParsingException extends GeneralSecurityException { |
| 687 | |
| 688 | private static final long serialVersionUID = 7147241245566588374L; |
| 689 | |
| 690 | /** |
| 691 | * Constructs a ParsingException with the specified |
| 692 | * detail message. |
| 693 | * @param msg the detail message. |
| 694 | */ |
| 695 | ParsingException(String msg) { |
| 696 | super(msg); |
| 697 | } |
| 698 | |
| 699 | ParsingException(int line, String msg) { |
| 700 | super("line " + line + ": " + msg); |
| 701 | } |
| 702 | |
| 703 | ParsingException(int line, String expect, String actual) { |
| 704 | super("line "+line+": expected '"+expect+"', found '"+actual+"'"); |
| 705 | } |
| 706 | } |
| 707 | } |