J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1997-2003 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 java.util; |
| 27 | |
| 28 | import java.io.Serializable; |
| 29 | import java.io.IOException; |
| 30 | import java.security.*; |
| 31 | import java.util.Map; |
| 32 | import java.util.HashMap; |
| 33 | import java.util.Enumeration; |
| 34 | import java.util.Hashtable; |
| 35 | import java.util.Collections; |
| 36 | import java.io.ObjectStreamField; |
| 37 | import java.io.ObjectOutputStream; |
| 38 | import java.io.ObjectInputStream; |
| 39 | import java.io.IOException; |
| 40 | import sun.security.util.SecurityConstants; |
| 41 | |
| 42 | /** |
| 43 | * This class is for property permissions. |
| 44 | * |
| 45 | * <P> |
| 46 | * The name is the name of the property ("java.home", |
| 47 | * "os.name", etc). The naming |
| 48 | * convention follows the hierarchical property naming convention. |
| 49 | * Also, an asterisk |
| 50 | * may appear at the end of the name, following a ".", or by itself, to |
| 51 | * signify a wildcard match. For example: "java.*" or "*" is valid, |
| 52 | * "*java" or "a*b" is not valid. |
| 53 | * <P> |
| 54 | * <P> |
| 55 | * The actions to be granted are passed to the constructor in a string containing |
| 56 | * a list of one or more comma-separated keywords. The possible keywords are |
| 57 | * "read" and "write". Their meaning is defined as follows: |
| 58 | * <P> |
| 59 | * <DL> |
| 60 | * <DT> read |
| 61 | * <DD> read permission. Allows <code>System.getProperty</code> to |
| 62 | * be called. |
| 63 | * <DT> write |
| 64 | * <DD> write permission. Allows <code>System.setProperty</code> to |
| 65 | * be called. |
| 66 | * </DL> |
| 67 | * <P> |
| 68 | * The actions string is converted to lowercase before processing. |
| 69 | * <P> |
| 70 | * Care should be taken before granting code permission to access |
| 71 | * certain system properties. For example, granting permission to |
| 72 | * access the "java.home" system property gives potentially malevolent |
| 73 | * code sensitive information about the system environment (the Java |
| 74 | * installation directory). Also, granting permission to access |
| 75 | * the "user.name" and "user.home" system properties gives potentially |
| 76 | * malevolent code sensitive information about the user environment |
| 77 | * (the user's account name and home directory). |
| 78 | * |
| 79 | * @see java.security.BasicPermission |
| 80 | * @see java.security.Permission |
| 81 | * @see java.security.Permissions |
| 82 | * @see java.security.PermissionCollection |
| 83 | * @see java.lang.SecurityManager |
| 84 | * |
| 85 | * |
| 86 | * @author Roland Schemers |
| 87 | * @since 1.2 |
| 88 | * |
| 89 | * @serial exclude |
| 90 | */ |
| 91 | |
| 92 | public final class PropertyPermission extends BasicPermission { |
| 93 | |
| 94 | /** |
| 95 | * Read action. |
| 96 | */ |
| 97 | private final static int READ = 0x1; |
| 98 | |
| 99 | /** |
| 100 | * Write action. |
| 101 | */ |
| 102 | private final static int WRITE = 0x2; |
| 103 | /** |
| 104 | * All actions (read,write); |
| 105 | */ |
| 106 | private final static int ALL = READ|WRITE; |
| 107 | /** |
| 108 | * No actions. |
| 109 | */ |
| 110 | private final static int NONE = 0x0; |
| 111 | |
| 112 | /** |
| 113 | * The actions mask. |
| 114 | * |
| 115 | */ |
| 116 | private transient int mask; |
| 117 | |
| 118 | /** |
| 119 | * The actions string. |
| 120 | * |
| 121 | * @serial |
| 122 | */ |
| 123 | private String actions; // Left null as long as possible, then |
| 124 | // created and re-used in the getAction function. |
| 125 | |
| 126 | /** |
| 127 | * initialize a PropertyPermission object. Common to all constructors. |
| 128 | * Also called during de-serialization. |
| 129 | * |
| 130 | * @param mask the actions mask to use. |
| 131 | * |
| 132 | */ |
| 133 | |
| 134 | private void init(int mask) |
| 135 | { |
| 136 | |
| 137 | if ((mask & ALL) != mask) |
| 138 | throw new IllegalArgumentException("invalid actions mask"); |
| 139 | |
| 140 | if (mask == NONE) |
| 141 | throw new IllegalArgumentException("invalid actions mask"); |
| 142 | |
| 143 | if (getName() == null) |
| 144 | throw new NullPointerException("name can't be null"); |
| 145 | |
| 146 | this.mask = mask; |
| 147 | } |
| 148 | |
| 149 | /** |
| 150 | * Creates a new PropertyPermission object with the specified name. |
| 151 | * The name is the name of the system property, and |
| 152 | * <i>actions</i> contains a comma-separated list of the |
| 153 | * desired actions granted on the property. Possible actions are |
| 154 | * "read" and "write". |
| 155 | * |
| 156 | * @param name the name of the PropertyPermission. |
| 157 | * @param actions the actions string. |
| 158 | * |
| 159 | * @throws NullPointerException if <code>name</code> is <code>null</code>. |
| 160 | * @throws IllegalArgumentException if <code>name</code> is empty or if |
| 161 | * <code>actions</code> is invalid. |
| 162 | */ |
| 163 | |
| 164 | public PropertyPermission(String name, String actions) |
| 165 | { |
| 166 | super(name,actions); |
| 167 | init(getMask(actions)); |
| 168 | } |
| 169 | |
| 170 | /** |
| 171 | * Checks if this PropertyPermission object "implies" the specified |
| 172 | * permission. |
| 173 | * <P> |
| 174 | * More specifically, this method returns true if:<p> |
| 175 | * <ul> |
| 176 | * <li> <i>p</i> is an instanceof PropertyPermission,<p> |
| 177 | * <li> <i>p</i>'s actions are a subset of this |
| 178 | * object's actions, and <p> |
| 179 | * <li> <i>p</i>'s name is implied by this object's |
| 180 | * name. For example, "java.*" implies "java.home". |
| 181 | * </ul> |
| 182 | * @param p the permission to check against. |
| 183 | * |
| 184 | * @return true if the specified permission is implied by this object, |
| 185 | * false if not. |
| 186 | */ |
| 187 | public boolean implies(Permission p) { |
| 188 | if (!(p instanceof PropertyPermission)) |
| 189 | return false; |
| 190 | |
| 191 | PropertyPermission that = (PropertyPermission) p; |
| 192 | |
| 193 | // we get the effective mask. i.e., the "and" of this and that. |
| 194 | // They must be equal to that.mask for implies to return true. |
| 195 | |
| 196 | return ((this.mask & that.mask) == that.mask) && super.implies(that); |
| 197 | } |
| 198 | |
| 199 | |
| 200 | /** |
| 201 | * Checks two PropertyPermission objects for equality. Checks that <i>obj</i> is |
| 202 | * a PropertyPermission, and has the same name and actions as this object. |
| 203 | * <P> |
| 204 | * @param obj the object we are testing for equality with this object. |
| 205 | * @return true if obj is a PropertyPermission, and has the same name and |
| 206 | * actions as this PropertyPermission object. |
| 207 | */ |
| 208 | public boolean equals(Object obj) { |
| 209 | if (obj == this) |
| 210 | return true; |
| 211 | |
| 212 | if (! (obj instanceof PropertyPermission)) |
| 213 | return false; |
| 214 | |
| 215 | PropertyPermission that = (PropertyPermission) obj; |
| 216 | |
| 217 | return (this.mask == that.mask) && |
| 218 | (this.getName().equals(that.getName())); |
| 219 | } |
| 220 | |
| 221 | /** |
| 222 | * Returns the hash code value for this object. |
| 223 | * The hash code used is the hash code of this permissions name, that is, |
| 224 | * <code>getName().hashCode()</code>, where <code>getName</code> is |
| 225 | * from the Permission superclass. |
| 226 | * |
| 227 | * @return a hash code value for this object. |
| 228 | */ |
| 229 | |
| 230 | public int hashCode() { |
| 231 | return this.getName().hashCode(); |
| 232 | } |
| 233 | |
| 234 | |
| 235 | /** |
| 236 | * Converts an actions String to an actions mask. |
| 237 | * |
| 238 | * @param action the action string. |
| 239 | * @return the actions mask. |
| 240 | */ |
| 241 | private static int getMask(String actions) { |
| 242 | |
| 243 | int mask = NONE; |
| 244 | |
| 245 | if (actions == null) { |
| 246 | return mask; |
| 247 | } |
| 248 | |
| 249 | // Check against use of constants (used heavily within the JDK) |
| 250 | if (actions == SecurityConstants.PROPERTY_READ_ACTION) { |
| 251 | return READ; |
| 252 | } if (actions == SecurityConstants.PROPERTY_WRITE_ACTION) { |
| 253 | return WRITE; |
| 254 | } else if (actions == SecurityConstants.PROPERTY_RW_ACTION) { |
| 255 | return READ|WRITE; |
| 256 | } |
| 257 | |
| 258 | char[] a = actions.toCharArray(); |
| 259 | |
| 260 | int i = a.length - 1; |
| 261 | if (i < 0) |
| 262 | return mask; |
| 263 | |
| 264 | while (i != -1) { |
| 265 | char c; |
| 266 | |
| 267 | // skip whitespace |
| 268 | while ((i!=-1) && ((c = a[i]) == ' ' || |
| 269 | c == '\r' || |
| 270 | c == '\n' || |
| 271 | c == '\f' || |
| 272 | c == '\t')) |
| 273 | i--; |
| 274 | |
| 275 | // check for the known strings |
| 276 | int matchlen; |
| 277 | |
| 278 | if (i >= 3 && (a[i-3] == 'r' || a[i-3] == 'R') && |
| 279 | (a[i-2] == 'e' || a[i-2] == 'E') && |
| 280 | (a[i-1] == 'a' || a[i-1] == 'A') && |
| 281 | (a[i] == 'd' || a[i] == 'D')) |
| 282 | { |
| 283 | matchlen = 4; |
| 284 | mask |= READ; |
| 285 | |
| 286 | } else if (i >= 4 && (a[i-4] == 'w' || a[i-4] == 'W') && |
| 287 | (a[i-3] == 'r' || a[i-3] == 'R') && |
| 288 | (a[i-2] == 'i' || a[i-2] == 'I') && |
| 289 | (a[i-1] == 't' || a[i-1] == 'T') && |
| 290 | (a[i] == 'e' || a[i] == 'E')) |
| 291 | { |
| 292 | matchlen = 5; |
| 293 | mask |= WRITE; |
| 294 | |
| 295 | } else { |
| 296 | // parse error |
| 297 | throw new IllegalArgumentException( |
| 298 | "invalid permission: " + actions); |
| 299 | } |
| 300 | |
| 301 | // make sure we didn't just match the tail of a word |
| 302 | // like "ackbarfaccept". Also, skip to the comma. |
| 303 | boolean seencomma = false; |
| 304 | while (i >= matchlen && !seencomma) { |
| 305 | switch(a[i-matchlen]) { |
| 306 | case ',': |
| 307 | seencomma = true; |
| 308 | /*FALLTHROUGH*/ |
| 309 | case ' ': case '\r': case '\n': |
| 310 | case '\f': case '\t': |
| 311 | break; |
| 312 | default: |
| 313 | throw new IllegalArgumentException( |
| 314 | "invalid permission: " + actions); |
| 315 | } |
| 316 | i--; |
| 317 | } |
| 318 | |
| 319 | // point i at the location of the comma minus one (or -1). |
| 320 | i -= matchlen; |
| 321 | } |
| 322 | |
| 323 | return mask; |
| 324 | } |
| 325 | |
| 326 | |
| 327 | /** |
| 328 | * Return the canonical string representation of the actions. |
| 329 | * Always returns present actions in the following order: |
| 330 | * read, write. |
| 331 | * |
| 332 | * @return the canonical string representation of the actions. |
| 333 | */ |
| 334 | static String getActions(int mask) |
| 335 | { |
| 336 | StringBuilder sb = new StringBuilder(); |
| 337 | boolean comma = false; |
| 338 | |
| 339 | if ((mask & READ) == READ) { |
| 340 | comma = true; |
| 341 | sb.append("read"); |
| 342 | } |
| 343 | |
| 344 | if ((mask & WRITE) == WRITE) { |
| 345 | if (comma) sb.append(','); |
| 346 | else comma = true; |
| 347 | sb.append("write"); |
| 348 | } |
| 349 | return sb.toString(); |
| 350 | } |
| 351 | |
| 352 | /** |
| 353 | * Returns the "canonical string representation" of the actions. |
| 354 | * That is, this method always returns present actions in the following order: |
| 355 | * read, write. For example, if this PropertyPermission object |
| 356 | * allows both write and read actions, a call to <code>getActions</code> |
| 357 | * will return the string "read,write". |
| 358 | * |
| 359 | * @return the canonical string representation of the actions. |
| 360 | */ |
| 361 | public String getActions() |
| 362 | { |
| 363 | if (actions == null) |
| 364 | actions = getActions(this.mask); |
| 365 | |
| 366 | return actions; |
| 367 | } |
| 368 | |
| 369 | /** |
| 370 | * Return the current action mask. |
| 371 | * Used by the PropertyPermissionCollection |
| 372 | * |
| 373 | * @return the actions mask. |
| 374 | */ |
| 375 | |
| 376 | int getMask() { |
| 377 | return mask; |
| 378 | } |
| 379 | |
| 380 | /** |
| 381 | * Returns a new PermissionCollection object for storing |
| 382 | * PropertyPermission objects. |
| 383 | * <p> |
| 384 | * |
| 385 | * @return a new PermissionCollection object suitable for storing |
| 386 | * PropertyPermissions. |
| 387 | */ |
| 388 | |
| 389 | public PermissionCollection newPermissionCollection() { |
| 390 | return new PropertyPermissionCollection(); |
| 391 | } |
| 392 | |
| 393 | |
| 394 | private static final long serialVersionUID = 885438825399942851L; |
| 395 | |
| 396 | /** |
| 397 | * WriteObject is called to save the state of the PropertyPermission |
| 398 | * to a stream. The actions are serialized, and the superclass |
| 399 | * takes care of the name. |
| 400 | */ |
| 401 | private synchronized void writeObject(java.io.ObjectOutputStream s) |
| 402 | throws IOException |
| 403 | { |
| 404 | // Write out the actions. The superclass takes care of the name |
| 405 | // call getActions to make sure actions field is initialized |
| 406 | if (actions == null) |
| 407 | getActions(); |
| 408 | s.defaultWriteObject(); |
| 409 | } |
| 410 | |
| 411 | /** |
| 412 | * readObject is called to restore the state of the PropertyPermission from |
| 413 | * a stream. |
| 414 | */ |
| 415 | private synchronized void readObject(java.io.ObjectInputStream s) |
| 416 | throws IOException, ClassNotFoundException |
| 417 | { |
| 418 | // Read in the action, then initialize the rest |
| 419 | s.defaultReadObject(); |
| 420 | init(getMask(actions)); |
| 421 | } |
| 422 | } |
| 423 | |
| 424 | /** |
| 425 | * A PropertyPermissionCollection stores a set of PropertyPermission |
| 426 | * permissions. |
| 427 | * |
| 428 | * @see java.security.Permission |
| 429 | * @see java.security.Permissions |
| 430 | * @see java.security.PermissionCollection |
| 431 | * |
| 432 | * |
| 433 | * @author Roland Schemers |
| 434 | * |
| 435 | * @serial include |
| 436 | */ |
| 437 | final class PropertyPermissionCollection extends PermissionCollection |
| 438 | implements Serializable |
| 439 | { |
| 440 | |
| 441 | /** |
| 442 | * Key is property name; value is PropertyPermission. |
| 443 | * Not serialized; see serialization section at end of class. |
| 444 | */ |
| 445 | private transient Map perms; |
| 446 | |
| 447 | /** |
| 448 | * Boolean saying if "*" is in the collection. |
| 449 | * |
| 450 | * @see #serialPersistentFields |
| 451 | */ |
| 452 | // No sync access; OK for this to be stale. |
| 453 | private boolean all_allowed; |
| 454 | |
| 455 | /** |
| 456 | * Create an empty PropertyPermissions object. |
| 457 | * |
| 458 | */ |
| 459 | |
| 460 | public PropertyPermissionCollection() { |
| 461 | perms = new HashMap(32); // Capacity for default policy |
| 462 | all_allowed = false; |
| 463 | } |
| 464 | |
| 465 | /** |
| 466 | * Adds a permission to the PropertyPermissions. The key for the hash is |
| 467 | * the name. |
| 468 | * |
| 469 | * @param permission the Permission object to add. |
| 470 | * |
| 471 | * @exception IllegalArgumentException - if the permission is not a |
| 472 | * PropertyPermission |
| 473 | * |
| 474 | * @exception SecurityException - if this PropertyPermissionCollection |
| 475 | * object has been marked readonly |
| 476 | */ |
| 477 | |
| 478 | public void add(Permission permission) |
| 479 | { |
| 480 | if (! (permission instanceof PropertyPermission)) |
| 481 | throw new IllegalArgumentException("invalid permission: "+ |
| 482 | permission); |
| 483 | if (isReadOnly()) |
| 484 | throw new SecurityException( |
| 485 | "attempt to add a Permission to a readonly PermissionCollection"); |
| 486 | |
| 487 | PropertyPermission pp = (PropertyPermission) permission; |
| 488 | String propName = pp.getName(); |
| 489 | |
| 490 | synchronized (this) { |
| 491 | PropertyPermission existing = (PropertyPermission) perms.get(propName); |
| 492 | |
| 493 | if (existing != null) { |
| 494 | int oldMask = existing.getMask(); |
| 495 | int newMask = pp.getMask(); |
| 496 | if (oldMask != newMask) { |
| 497 | int effective = oldMask | newMask; |
| 498 | String actions = PropertyPermission.getActions(effective); |
| 499 | perms.put(propName, new PropertyPermission(propName, actions)); |
| 500 | } |
| 501 | } else { |
| 502 | perms.put(propName, permission); |
| 503 | } |
| 504 | } |
| 505 | |
| 506 | if (!all_allowed) { |
| 507 | if (propName.equals("*")) |
| 508 | all_allowed = true; |
| 509 | } |
| 510 | } |
| 511 | |
| 512 | /** |
| 513 | * Check and see if this set of permissions implies the permissions |
| 514 | * expressed in "permission". |
| 515 | * |
| 516 | * @param p the Permission object to compare |
| 517 | * |
| 518 | * @return true if "permission" is a proper subset of a permission in |
| 519 | * the set, false if not. |
| 520 | */ |
| 521 | |
| 522 | public boolean implies(Permission permission) |
| 523 | { |
| 524 | if (! (permission instanceof PropertyPermission)) |
| 525 | return false; |
| 526 | |
| 527 | PropertyPermission pp = (PropertyPermission) permission; |
| 528 | PropertyPermission x; |
| 529 | |
| 530 | int desired = pp.getMask(); |
| 531 | int effective = 0; |
| 532 | |
| 533 | // short circuit if the "*" Permission was added |
| 534 | if (all_allowed) { |
| 535 | synchronized (this) { |
| 536 | x = (PropertyPermission) perms.get("*"); |
| 537 | } |
| 538 | if (x != null) { |
| 539 | effective |= x.getMask(); |
| 540 | if ((effective & desired) == desired) |
| 541 | return true; |
| 542 | } |
| 543 | } |
| 544 | |
| 545 | // strategy: |
| 546 | // Check for full match first. Then work our way up the |
| 547 | // name looking for matches on a.b.* |
| 548 | |
| 549 | String name = pp.getName(); |
| 550 | //System.out.println("check "+name); |
| 551 | |
| 552 | synchronized (this) { |
| 553 | x = (PropertyPermission) perms.get(name); |
| 554 | } |
| 555 | |
| 556 | if (x != null) { |
| 557 | // we have a direct hit! |
| 558 | effective |= x.getMask(); |
| 559 | if ((effective & desired) == desired) |
| 560 | return true; |
| 561 | } |
| 562 | |
| 563 | // work our way up the tree... |
| 564 | int last, offset; |
| 565 | |
| 566 | offset = name.length()-1; |
| 567 | |
| 568 | while ((last = name.lastIndexOf(".", offset)) != -1) { |
| 569 | |
| 570 | name = name.substring(0, last+1) + "*"; |
| 571 | //System.out.println("check "+name); |
| 572 | synchronized (this) { |
| 573 | x = (PropertyPermission) perms.get(name); |
| 574 | } |
| 575 | |
| 576 | if (x != null) { |
| 577 | effective |= x.getMask(); |
| 578 | if ((effective & desired) == desired) |
| 579 | return true; |
| 580 | } |
| 581 | offset = last -1; |
| 582 | } |
| 583 | |
| 584 | // we don't have to check for "*" as it was already checked |
| 585 | // at the top (all_allowed), so we just return false |
| 586 | return false; |
| 587 | } |
| 588 | |
| 589 | /** |
| 590 | * Returns an enumeration of all the PropertyPermission objects in the |
| 591 | * container. |
| 592 | * |
| 593 | * @return an enumeration of all the PropertyPermission objects. |
| 594 | */ |
| 595 | |
| 596 | public Enumeration elements() { |
| 597 | // Convert Iterator of Map values into an Enumeration |
| 598 | synchronized (this) { |
| 599 | return Collections.enumeration(perms.values()); |
| 600 | } |
| 601 | } |
| 602 | |
| 603 | private static final long serialVersionUID = 7015263904581634791L; |
| 604 | |
| 605 | // Need to maintain serialization interoperability with earlier releases, |
| 606 | // which had the serializable field: |
| 607 | // |
| 608 | // Table of permissions. |
| 609 | // |
| 610 | // @serial |
| 611 | // |
| 612 | // private Hashtable permissions; |
| 613 | /** |
| 614 | * @serialField permissions java.util.Hashtable |
| 615 | * A table of the PropertyPermissions. |
| 616 | * @serialField all_allowed boolean |
| 617 | * boolean saying if "*" is in the collection. |
| 618 | */ |
| 619 | private static final ObjectStreamField[] serialPersistentFields = { |
| 620 | new ObjectStreamField("permissions", Hashtable.class), |
| 621 | new ObjectStreamField("all_allowed", Boolean.TYPE), |
| 622 | }; |
| 623 | |
| 624 | /** |
| 625 | * @serialData Default fields. |
| 626 | */ |
| 627 | /* |
| 628 | * Writes the contents of the perms field out as a Hashtable for |
| 629 | * serialization compatibility with earlier releases. all_allowed |
| 630 | * unchanged. |
| 631 | */ |
| 632 | private void writeObject(ObjectOutputStream out) throws IOException { |
| 633 | // Don't call out.defaultWriteObject() |
| 634 | |
| 635 | // Copy perms into a Hashtable |
| 636 | Hashtable permissions = new Hashtable(perms.size()*2); |
| 637 | synchronized (this) { |
| 638 | permissions.putAll(perms); |
| 639 | } |
| 640 | |
| 641 | // Write out serializable fields |
| 642 | ObjectOutputStream.PutField pfields = out.putFields(); |
| 643 | pfields.put("all_allowed", all_allowed); |
| 644 | pfields.put("permissions", permissions); |
| 645 | out.writeFields(); |
| 646 | } |
| 647 | |
| 648 | /* |
| 649 | * Reads in a Hashtable of PropertyPermissions and saves them in the |
| 650 | * perms field. Reads in all_allowed. |
| 651 | */ |
| 652 | private void readObject(ObjectInputStream in) throws IOException, |
| 653 | ClassNotFoundException { |
| 654 | // Don't call defaultReadObject() |
| 655 | |
| 656 | // Read in serialized fields |
| 657 | ObjectInputStream.GetField gfields = in.readFields(); |
| 658 | |
| 659 | // Get all_allowed |
| 660 | all_allowed = gfields.get("all_allowed", false); |
| 661 | |
| 662 | // Get permissions |
| 663 | Hashtable permissions = (Hashtable)gfields.get("permissions", null); |
| 664 | perms = new HashMap(permissions.size()*2); |
| 665 | perms.putAll(permissions); |
| 666 | } |
| 667 | } |