J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Portions Copyright 2000-2007 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 | /* |
| 27 | * |
| 28 | * (C) Copyright IBM Corp. 1999 All Rights Reserved. |
| 29 | * Copyright 1997 The Open Group Research Institute. All rights reserved. |
| 30 | */ |
| 31 | package sun.security.krb5; |
| 32 | |
| 33 | import java.io.File; |
| 34 | import java.io.FileInputStream; |
| 35 | import java.util.Hashtable; |
| 36 | import java.util.Vector; |
| 37 | import java.util.ArrayList; |
| 38 | import java.io.BufferedReader; |
| 39 | import java.io.InputStreamReader; |
| 40 | import java.io.IOException; |
| 41 | import java.util.Enumeration; |
| 42 | import java.util.List; |
| 43 | import java.util.StringTokenizer; |
| 44 | import java.net.InetAddress; |
| 45 | import java.net.UnknownHostException; |
| 46 | import sun.security.krb5.internal.crypto.EType; |
| 47 | import sun.security.krb5.internal.ktab.*; |
| 48 | import sun.security.krb5.internal.Krb5; |
| 49 | |
| 50 | /** |
| 51 | * This class maintains key-value pairs of Kerberos configurable constants |
| 52 | * from configuration file or from user specified system properties. |
| 53 | */ |
| 54 | |
| 55 | public class Config { |
| 56 | |
| 57 | /* |
| 58 | * Only allow a single instance of Config. |
| 59 | */ |
| 60 | private static Config singleton = null; |
| 61 | |
| 62 | /* |
| 63 | * Hashtable used to store configuration infomation. |
| 64 | */ |
| 65 | private Hashtable<String,Object> stanzaTable; |
| 66 | |
| 67 | private static boolean DEBUG = sun.security.krb5.internal.Krb5.DEBUG; |
| 68 | |
| 69 | // these are used for hexdecimal calculation. |
| 70 | private static final int BASE16_0 = 1; |
| 71 | private static final int BASE16_1 = 16; |
| 72 | private static final int BASE16_2 = 16 * 16; |
| 73 | private static final int BASE16_3 = 16 * 16 * 16; |
| 74 | private String defaultRealm; // default kdc realm. |
| 75 | |
| 76 | // used for native interface |
| 77 | private static native String getWindowsDirectory(); |
| 78 | |
| 79 | |
| 80 | /** |
| 81 | * Gets an instance of Config class. One and only one instance (the |
| 82 | * singleton) is returned. |
| 83 | * |
| 84 | * @exception KrbException if error occurs when constructing a Config |
| 85 | * instance. Possible causes would be configuration file not |
| 86 | * found, either of java.security.krb5.realm or java.security.krb5.kdc |
| 87 | * not specified, error reading configuration file. |
| 88 | */ |
| 89 | public static synchronized Config getInstance() throws KrbException { |
| 90 | if (singleton == null) { |
| 91 | singleton = new Config(); |
| 92 | } |
| 93 | return singleton; |
| 94 | } |
| 95 | |
| 96 | /** |
| 97 | * Refresh and reload the Configuration. This could involve, |
| 98 | * for example reading the Configuration file again or getting |
| 99 | * the java.security.krb5.* system properties again. |
| 100 | * |
| 101 | * @exception KrbException if error occurs when constructing a Config |
| 102 | * instance. Possible causes would be configuration file not |
| 103 | * found, either of java.security.krb5.realm or java.security.krb5.kdc |
| 104 | * not specified, error reading configuration file. |
| 105 | */ |
| 106 | |
| 107 | public static synchronized void refresh() throws KrbException { |
| 108 | singleton = new Config(); |
| 109 | KeyTab.refresh(); |
| 110 | } |
| 111 | |
| 112 | |
| 113 | /** |
| 114 | * Private constructor - can not be instantiated externally. |
| 115 | */ |
| 116 | private Config() throws KrbException { |
| 117 | /* |
| 118 | * If these two system properties are being specified by the user, |
| 119 | * we ignore configuration file. If either one system property is |
| 120 | * specified, we throw exception. If neither of them are specified, |
| 121 | * we load the information from configuration file. |
| 122 | */ |
| 123 | String kdchost = |
| 124 | java.security.AccessController.doPrivileged( |
| 125 | new sun.security.action.GetPropertyAction |
| 126 | ("java.security.krb5.kdc")); |
| 127 | defaultRealm = |
| 128 | java.security.AccessController.doPrivileged( |
| 129 | new sun.security.action.GetPropertyAction |
| 130 | ("java.security.krb5.realm")); |
| 131 | if ((kdchost == null && defaultRealm != null) || |
| 132 | (defaultRealm == null && kdchost != null)) { |
| 133 | throw new KrbException |
| 134 | ("System property java.security.krb5.kdc and " + |
| 135 | "java.security.krb5.realm both must be set or " + |
| 136 | "neither must be set."); |
| 137 | } |
| 138 | if (kdchost != null) { |
| 139 | /* |
| 140 | * If configuration information is only specified by |
| 141 | * properties java.security.krb5.kdc and |
| 142 | * java.security.krb5.realm, we put both in the hashtable |
| 143 | * under [libdefaults]. |
| 144 | */ |
| 145 | Hashtable<String,String> kdcs = new Hashtable<String,String> (); |
| 146 | kdcs.put("default_realm", defaultRealm); |
| 147 | // The user can specify a list of kdc hosts separated by ":" |
| 148 | kdchost = kdchost.replace(':', ' '); |
| 149 | kdcs.put("kdc", kdchost); |
| 150 | stanzaTable = new Hashtable<String,Object> (); |
| 151 | stanzaTable.put("libdefaults", kdcs); |
| 152 | } else { |
| 153 | // Read the Kerberos configuration file |
| 154 | try { |
| 155 | Vector<String> configFile; |
| 156 | configFile = loadConfigFile(); |
| 157 | stanzaTable = parseStanzaTable(configFile); |
| 158 | } catch (IOException ioe) { |
| 159 | KrbException ke = new KrbException("Could not load " + |
| 160 | "configuration file " + |
| 161 | ioe.getMessage()); |
| 162 | ke.initCause(ioe); |
| 163 | throw(ke); |
| 164 | } |
| 165 | } |
| 166 | } |
| 167 | |
| 168 | /** |
| 169 | * Gets the default int value for the specified name. |
| 170 | * @param name the name. |
| 171 | * @return the default Integer, null is returned if no such name and |
| 172 | * value are found in configuration file, or error occurs when parsing |
| 173 | * string to integer. |
| 174 | */ |
| 175 | public int getDefaultIntValue(String name) { |
| 176 | String result = null; |
| 177 | int value = Integer.MIN_VALUE; |
| 178 | result = getDefault(name); |
| 179 | if (result != null) { |
| 180 | try { |
| 181 | value = parseIntValue(result); |
| 182 | } catch (NumberFormatException e) { |
| 183 | if (DEBUG) { |
| 184 | System.out.println("Exception in getting value of " + |
| 185 | name + " " + |
| 186 | e.getMessage()); |
| 187 | System.out.println("Setting " + name + |
| 188 | " to minimum value"); |
| 189 | } |
| 190 | value = Integer.MIN_VALUE; |
| 191 | } |
| 192 | } |
| 193 | return value; |
| 194 | } |
| 195 | |
| 196 | /** |
| 197 | * Gets the default int value for the specified name in the specified |
| 198 | * section. <br>This method is quicker by using section name as the |
| 199 | * search key. |
| 200 | * @param name the name. |
| 201 | * @param sectio the name string of the section. |
| 202 | * @return the default Integer, null is returned if no such name and |
| 203 | * value are found in configuration file, or error occurs when parsing |
| 204 | * string to integer. |
| 205 | */ |
| 206 | public int getDefaultIntValue(String name, String section) { |
| 207 | String result = null; |
| 208 | int value = Integer.MIN_VALUE; |
| 209 | result = getDefault(name, section); |
| 210 | if (result != null) { |
| 211 | try { |
| 212 | value = parseIntValue(result); |
| 213 | } catch (NumberFormatException e) { |
| 214 | if (DEBUG) { |
| 215 | System.out.println("Exception in getting value of " + |
| 216 | name +" in section " + |
| 217 | section + " " + e.getMessage()); |
| 218 | System.out.println("Setting " + name + |
| 219 | " to minimum value"); |
| 220 | } |
| 221 | value = Integer.MIN_VALUE; |
| 222 | } |
| 223 | } |
| 224 | return value; |
| 225 | } |
| 226 | |
| 227 | /** |
| 228 | * Gets the default string value for the specified name. |
| 229 | * @param name the name. |
| 230 | * @return the default value, null is returned if it cannot be found. |
| 231 | */ |
| 232 | public String getDefault(String name) { |
| 233 | if (stanzaTable == null) { |
| 234 | return null; |
| 235 | } else { |
| 236 | return getDefault(name, stanzaTable); |
| 237 | } |
| 238 | } |
| 239 | |
| 240 | /** |
| 241 | * This method does the real job to recursively search through the |
| 242 | * stanzaTable. |
| 243 | * @param k the key string. |
| 244 | * @param t stanzaTable or sub hashtable within it. |
| 245 | * @return the value found in config file, returns null if no value |
| 246 | * matched with the key is found. |
| 247 | */ |
| 248 | private String getDefault(String k, Hashtable t) { |
| 249 | String result = null; |
| 250 | String key; |
| 251 | if (stanzaTable != null) { |
| 252 | for (Enumeration e = t.keys(); e.hasMoreElements(); ) { |
| 253 | key = (String)e.nextElement(); |
| 254 | Object ob = t.get(key); |
| 255 | if (ob instanceof Hashtable) { |
| 256 | result = getDefault(k, (Hashtable)ob); |
| 257 | if (result != null) { |
| 258 | return result; |
| 259 | } |
| 260 | } else if (key.equalsIgnoreCase(k)) { |
| 261 | if (ob instanceof String) { |
| 262 | return (String)(t.get(key)); |
| 263 | } else if (ob instanceof Vector) { |
| 264 | result = ""; |
| 265 | int length = ((Vector)ob).size(); |
| 266 | for (int i = 0; i < length; i++) { |
| 267 | if (i == length -1) { |
| 268 | result += |
| 269 | (String)(((Vector)ob).elementAt(i)); |
| 270 | } else { |
| 271 | result += |
| 272 | (String)(((Vector)ob).elementAt(i)) + " "; |
| 273 | } |
| 274 | } |
| 275 | return result; |
| 276 | } |
| 277 | } |
| 278 | } |
| 279 | } |
| 280 | return result; |
| 281 | } |
| 282 | |
| 283 | /** |
| 284 | * Gets the default string value for the specified name in the |
| 285 | * specified section. |
| 286 | * <br>This method is quicker by using the section name as the search key. |
| 287 | * @param name the name. |
| 288 | * @param section the name of the section. |
| 289 | * @return the default value, null is returned if it cannot be found. |
| 290 | */ |
| 291 | public String getDefault(String name, String section) { |
| 292 | String stanzaName; |
| 293 | String result = null; |
| 294 | Hashtable subTable; |
| 295 | |
| 296 | /* |
| 297 | * In the situation when kdc is specified by |
| 298 | * java.security.krb5.kdc, we get the kdc from [libdefaults] in |
| 299 | * hashtable. |
| 300 | */ |
| 301 | if (name.equalsIgnoreCase("kdc") && |
| 302 | (!section.equalsIgnoreCase("libdefaults")) && |
| 303 | (java.security.AccessController.doPrivileged( |
| 304 | new sun.security.action. |
| 305 | GetPropertyAction("java.security.krb5.kdc")) != null)) { |
| 306 | result = getDefault("kdc", "libdefaults"); |
| 307 | return result; |
| 308 | } |
| 309 | if (stanzaTable != null) { |
| 310 | for (Enumeration e = stanzaTable.keys(); e.hasMoreElements(); ) { |
| 311 | stanzaName = (String)e.nextElement(); |
| 312 | subTable = (Hashtable)stanzaTable.get(stanzaName); |
| 313 | if (stanzaName.equalsIgnoreCase(section)) { |
| 314 | if (subTable.containsKey(name)) { |
| 315 | return (String)(subTable.get(name)); |
| 316 | } |
| 317 | } else if (subTable.containsKey(section)) { |
| 318 | Object ob = subTable.get(section); |
| 319 | if (ob instanceof Hashtable) { |
| 320 | Hashtable temp = (Hashtable)ob; |
| 321 | if (temp.containsKey(name)) { |
| 322 | Object object = temp.get(name); |
| 323 | if (object instanceof Vector) { |
| 324 | result = ""; |
| 325 | int length = ((Vector)object).size(); |
| 326 | for (int i = 0; i < length; i++) { |
| 327 | if (i == length - 1) { |
| 328 | result += |
| 329 | (String)(((Vector)object).elementAt(i)); |
| 330 | } else { |
| 331 | result += |
| 332 | (String)(((Vector)object).elementAt(i)) |
| 333 | + " "; |
| 334 | } |
| 335 | } |
| 336 | } else { |
| 337 | result = (String)object; |
| 338 | } |
| 339 | } |
| 340 | } |
| 341 | } |
| 342 | } |
| 343 | } |
| 344 | return result; |
| 345 | } |
| 346 | |
| 347 | /** |
| 348 | * Gets the default boolean value for the specified name. |
| 349 | * @param name the name. |
| 350 | * @return the default boolean value, false is returned if it cannot be |
| 351 | * found. |
| 352 | */ |
| 353 | public boolean getDefaultBooleanValue(String name) { |
| 354 | String val = null; |
| 355 | if (stanzaTable == null) { |
| 356 | val = null; |
| 357 | } else { |
| 358 | val = getDefault(name, stanzaTable); |
| 359 | } |
| 360 | if (val != null && val.equalsIgnoreCase("true")) { |
| 361 | return true; |
| 362 | } else { |
| 363 | return false; |
| 364 | } |
| 365 | } |
| 366 | |
| 367 | /** |
| 368 | * Gets the default boolean value for the specified name in the |
| 369 | * specified section. |
| 370 | * <br>This method is quicker by using the section name as the search key. |
| 371 | * @param name the name. |
| 372 | * @param section the name of the section. |
| 373 | * @return the default boolean value, false is returned if it cannot be |
| 374 | * found. |
| 375 | */ |
| 376 | public boolean getDefaultBooleanValue(String name, String section) { |
| 377 | String val = getDefault(name, section); |
| 378 | if (val != null && val.equalsIgnoreCase("true")) { |
| 379 | return true; |
| 380 | } else { |
| 381 | return false; |
| 382 | } |
| 383 | } |
| 384 | |
| 385 | /** |
| 386 | * Parses a string to an integer. The convertible strings include the |
| 387 | * string representations of positive integers, negative integers, and |
| 388 | * hex decimal integers. Valid inputs are, e.g., -1234, +1234, |
| 389 | * 0x40000. |
| 390 | * |
| 391 | * @param input the String to be converted to an Integer. |
| 392 | * @return an numeric value represented by the string |
| 393 | * @exception NumberFormationException if the String does not contain a |
| 394 | * parsable integer. |
| 395 | */ |
| 396 | private int parseIntValue(String input) throws NumberFormatException { |
| 397 | int value = 0; |
| 398 | if (input.startsWith("+")) { |
| 399 | String temp = input.substring(1); |
| 400 | return Integer.parseInt(temp); |
| 401 | } else if (input.startsWith("0x")) { |
| 402 | String temp = input.substring(2); |
| 403 | char[] chars = temp.toCharArray(); |
| 404 | if (chars.length > 8) { |
| 405 | throw new NumberFormatException(); |
| 406 | } else { |
| 407 | for (int i = 0; i < chars.length; i++) { |
| 408 | int index = chars.length - i - 1; |
| 409 | switch (chars[i]) { |
| 410 | case '0': |
| 411 | value += 0; |
| 412 | break; |
| 413 | case '1': |
| 414 | value += 1 * getBase(index); |
| 415 | break; |
| 416 | case '2': |
| 417 | value += 2 * getBase(index); |
| 418 | break; |
| 419 | case '3': |
| 420 | value += 3 * getBase(index); |
| 421 | break; |
| 422 | case '4': |
| 423 | value += 4 * getBase(index); |
| 424 | break; |
| 425 | case '5': |
| 426 | value += 5 * getBase(index); |
| 427 | break; |
| 428 | case '6': |
| 429 | value += 6 * getBase(index); |
| 430 | break; |
| 431 | case '7': |
| 432 | value += 7 * getBase(index); |
| 433 | break; |
| 434 | case '8': |
| 435 | value += 8 * getBase(index); |
| 436 | break; |
| 437 | case '9': |
| 438 | value += 9 * getBase(index); |
| 439 | break; |
| 440 | case 'a': |
| 441 | case 'A': |
| 442 | value += 10 * getBase(index); |
| 443 | break; |
| 444 | case 'b': |
| 445 | case 'B': |
| 446 | value += 11 * getBase(index); |
| 447 | break; |
| 448 | case 'c': |
| 449 | case 'C': |
| 450 | value += 12 * getBase(index); |
| 451 | break; |
| 452 | case 'd': |
| 453 | case 'D': |
| 454 | value += 13 * getBase(index); |
| 455 | break; |
| 456 | case 'e': |
| 457 | case 'E': |
| 458 | value += 14 * getBase(index); |
| 459 | break; |
| 460 | case 'f': |
| 461 | case 'F': |
| 462 | value += 15 * getBase(index); |
| 463 | break; |
| 464 | default: |
| 465 | throw new NumberFormatException("Invalid numerical format"); |
| 466 | } |
| 467 | } |
| 468 | } |
| 469 | if (value < 0) { |
| 470 | throw new NumberFormatException("Data overflow."); |
| 471 | } |
| 472 | } else { |
| 473 | value = Integer.parseInt(input); |
| 474 | } |
| 475 | return value; |
| 476 | } |
| 477 | |
| 478 | private int getBase(int i) { |
| 479 | int result = 16; |
| 480 | switch (i) { |
| 481 | case 0: |
| 482 | result = BASE16_0; |
| 483 | break; |
| 484 | case 1: |
| 485 | result = BASE16_1; |
| 486 | break; |
| 487 | case 2: |
| 488 | result = BASE16_2; |
| 489 | break; |
| 490 | case 3: |
| 491 | result = BASE16_3; |
| 492 | break; |
| 493 | default: |
| 494 | for (int j = 1; j < i; j++) { |
| 495 | result *= 16; |
| 496 | } |
| 497 | } |
| 498 | return result; |
| 499 | } |
| 500 | |
| 501 | /** |
| 502 | * Finds the matching value in the hashtable. |
| 503 | */ |
| 504 | private String find(String key1, String key2) { |
| 505 | String result; |
| 506 | if ((stanzaTable != null) && |
| 507 | ((result = (String) |
| 508 | (((Hashtable)(stanzaTable.get(key1))).get(key2))) != null)) { |
| 509 | return result; |
| 510 | } else { |
| 511 | return ""; |
| 512 | } |
| 513 | } |
| 514 | |
| 515 | /** |
| 516 | * Reads name/value pairs to the memory from the configuration |
| 517 | * file. The default location of the configuration file is in java home |
| 518 | * directory. |
| 519 | * |
| 520 | * Configuration file contains information about the default realm, |
| 521 | * ticket parameters, location of the KDC and the admin server for |
| 522 | * known realms, etc. The file is divided into sections. Each section |
| 523 | * contains one or more name/value pairs with one pair per line. A |
| 524 | * typical file would be: |
| 525 | * [libdefaults] |
| 526 | * default_realm = EXAMPLE.COM |
| 527 | * default_tgs_enctypes = des-cbc-md5 |
| 528 | * default_tkt_enctypes = des-cbc-md5 |
| 529 | * [realms] |
| 530 | * EXAMPLE.COM = { |
| 531 | * kdc = kerberos.example.com |
| 532 | * kdc = kerberos-1.example.com |
| 533 | * admin_server = kerberos.example.com |
| 534 | * } |
| 535 | * SAMPLE_COM = { |
| 536 | * kdc = orange.sample.com |
| 537 | * admin_server = orange.sample.com |
| 538 | * } |
| 539 | * [domain_realm] |
| 540 | * blue.sample.com = TEST.SAMPLE.COM |
| 541 | * .backup.com = EXAMPLE.COM |
| 542 | */ |
| 543 | private Vector<String> loadConfigFile() throws IOException { |
| 544 | try { |
| 545 | final String fileName = getFileName(); |
| 546 | if (!fileName.equals("")) { |
| 547 | BufferedReader br = new BufferedReader(new InputStreamReader( |
| 548 | java.security.AccessController.doPrivileged( |
| 549 | new java.security.PrivilegedExceptionAction<FileInputStream> () { |
| 550 | public FileInputStream run() throws IOException { |
| 551 | return new FileInputStream(fileName); |
| 552 | } |
| 553 | }))); |
| 554 | String Line; |
| 555 | Vector<String> v = new Vector<String> (); |
| 556 | String previous = null; |
| 557 | while ((Line = br.readLine()) != null) { |
| 558 | // ignore comments and blank line in the configuration file. |
| 559 | // Comments start with #. |
| 560 | if (!(Line.startsWith("#") || Line.trim().isEmpty())) { |
| 561 | String current = Line.trim(); |
| 562 | // In practice, a subsection might look like: |
| 563 | // EXAMPLE.COM = |
| 564 | // { |
| 565 | // kdc = kerberos.example.com |
| 566 | // ... |
| 567 | // } |
| 568 | // Before parsed into stanza table, it needs to be |
| 569 | // converted into formal style: |
| 570 | // EXAMPLE.COM = { |
| 571 | // kdc = kerberos.example.com |
| 572 | // ... |
| 573 | // } |
| 574 | // |
| 575 | // So, if a line is "{", adhere to the previous line. |
| 576 | if (current.equals("{")) { |
| 577 | if (previous == null) { |
| 578 | throw new IOException( |
| 579 | "Config file should not start with \"{\""); |
| 580 | } |
| 581 | previous += " " + current; |
| 582 | } else { |
| 583 | if (previous != null) { |
| 584 | v.addElement(previous); |
| 585 | } |
| 586 | previous = current; |
| 587 | } |
| 588 | } |
| 589 | } |
| 590 | if (previous != null) { |
| 591 | v.addElement(previous); |
| 592 | } |
| 593 | |
| 594 | br.close(); |
| 595 | return v; |
| 596 | } |
| 597 | return null; |
| 598 | } catch (java.security.PrivilegedActionException pe) { |
| 599 | throw (IOException)pe.getException(); |
| 600 | } |
| 601 | } |
| 602 | |
| 603 | |
| 604 | /** |
| 605 | * Parses stanza names and values from configuration file to |
| 606 | * stanzaTable (Hashtable). Hashtable key would be stanza names, |
| 607 | * (libdefaults, realms, domain_realms, etc), and the hashtable value |
| 608 | * would be another hashtable which contains the key-value pairs under |
| 609 | * a stanza name. |
| 610 | */ |
| 611 | private Hashtable<String,Object> parseStanzaTable(Vector<String> v) throws KrbException { |
| 612 | if (v == null) { |
| 613 | throw new KrbException("I/O error while reading" + |
| 614 | " configuration file."); |
| 615 | } |
| 616 | Hashtable<String,Object> table = new Hashtable<String,Object> (); |
| 617 | for (int i = 0; i < v.size(); i++) { |
| 618 | String line = v.elementAt(i).trim(); |
| 619 | if (line.equalsIgnoreCase("[realms]")) { |
| 620 | for (int count = i + 1; count < v.size() + 1; count++) { |
| 621 | // find the next stanza name |
| 622 | if ((count == v.size()) || |
| 623 | (v.elementAt(count).startsWith("["))) { |
| 624 | Hashtable<String,Hashtable<String,Vector<String>>> temp = |
| 625 | new Hashtable<String,Hashtable<String,Vector<String>>>(); |
| 626 | temp = parseRealmField(v, i + 1, count); |
| 627 | table.put("realms", temp); |
| 628 | i = count - 1; |
| 629 | break; |
| 630 | } |
| 631 | } |
| 632 | } else if (line.equalsIgnoreCase("[capaths]")) { |
| 633 | for (int count = i + 1; count < v.size() + 1; count++) { |
| 634 | // find the next stanza name |
| 635 | if ((count == v.size()) || |
| 636 | (v.elementAt(count).startsWith("["))) { |
| 637 | Hashtable<String,Hashtable<String,Vector<String>>> temp = |
| 638 | new Hashtable<String,Hashtable<String,Vector<String>>>(); |
| 639 | temp = parseRealmField(v, i + 1, count); |
| 640 | table.put("capaths", temp); |
| 641 | i = count - 1; |
| 642 | break; |
| 643 | } |
| 644 | } |
| 645 | } else if (line.startsWith("[") && line.endsWith("]")) { |
| 646 | String key = line.substring(1, line.length() - 1); |
| 647 | for (int count = i + 1; count < v.size() + 1; count++) { |
| 648 | // find the next stanza name |
| 649 | if ((count == v.size()) || |
| 650 | (v.elementAt(count).startsWith("["))) { |
| 651 | Hashtable<String,String> temp = |
| 652 | parseField(v, i + 1, count); |
| 653 | table.put(key, temp); |
| 654 | i = count - 1; |
| 655 | break; |
| 656 | } |
| 657 | } |
| 658 | } |
| 659 | } |
| 660 | return table; |
| 661 | } |
| 662 | |
| 663 | /** |
| 664 | * Gets the default configuration file name. The file will be searched |
| 665 | * in a list of possible loations in the following order: |
| 666 | * 1. the location and file name defined by system property |
| 667 | * "java.security.krb5.conf", |
| 668 | * 2. at Java home lib\security directory with "krb5.conf" name, |
| 669 | * 3. "krb5.ini" at Java home, |
| 670 | * 4. at windows directory with the name of "krb5.ini" for Windows, |
| 671 | * /etc/krb5/krb5.conf for Solaris, /etc/krb5.conf for Linux. |
| 672 | */ |
| 673 | private String getFileName() { |
| 674 | String name = |
| 675 | java.security.AccessController.doPrivileged( |
| 676 | new sun.security.action. |
| 677 | GetPropertyAction("java.security.krb5.conf")); |
| 678 | if (name != null) { |
| 679 | boolean temp = |
| 680 | java.security.AccessController.doPrivileged( |
| 681 | new FileExistsAction(name)); |
| 682 | if (temp) |
| 683 | return name; |
| 684 | } else { |
| 685 | name = java.security.AccessController.doPrivileged( |
| 686 | new sun.security.action. |
| 687 | GetPropertyAction("java.home")) + File.separator + |
| 688 | "lib" + File.separator + "security" + |
| 689 | File.separator + "krb5.conf"; |
| 690 | boolean temp = |
| 691 | java.security.AccessController.doPrivileged( |
| 692 | new FileExistsAction(name)); |
| 693 | if (temp) { |
| 694 | return name; |
| 695 | } else { |
| 696 | String osname = |
| 697 | java.security.AccessController.doPrivileged( |
| 698 | new sun.security.action.GetPropertyAction("os.name")); |
| 699 | if (osname.startsWith("Windows")) { |
| 700 | try { |
| 701 | Credentials.ensureLoaded(); |
| 702 | } catch (Exception e) { |
| 703 | // ignore exceptions |
| 704 | } |
| 705 | if (Credentials.alreadyLoaded) { |
| 706 | if ((name = getWindowsDirectory()) == null) { |
| 707 | name = "c:\\winnt\\krb5.ini"; |
| 708 | } else if (name.endsWith("\\")) { |
| 709 | name += "krb5.ini"; |
| 710 | } else { |
| 711 | name += "\\krb5.ini"; |
| 712 | } |
| 713 | } else { |
| 714 | name = "c:\\winnt\\krb5.ini"; |
| 715 | } |
| 716 | } else if (osname.startsWith("SunOS")) { |
| 717 | name = "/etc/krb5/krb5.conf"; |
| 718 | } else if (osname.startsWith("Linux")) { |
| 719 | name = "/etc/krb5.conf"; |
| 720 | } |
| 721 | } |
| 722 | } |
| 723 | if (DEBUG) { |
| 724 | System.out.println("Config name: " + name); |
| 725 | } |
| 726 | return name; |
| 727 | } |
| 728 | |
| 729 | /** |
| 730 | * Parses key-value pairs under a stanza name. |
| 731 | */ |
| 732 | private Hashtable<String,String> parseField(Vector<String> v, int start, int end) { |
| 733 | Hashtable<String,String> table = new Hashtable<String,String> (); |
| 734 | String line; |
| 735 | for (int i = start; i < end; i++) { |
| 736 | line = v.elementAt(i); |
| 737 | for (int j = 0; j < line.length(); j++) { |
| 738 | if (line.charAt(j) == '=') { |
| 739 | String key = (line.substring(0, j)).trim(); |
| 740 | String value = (line.substring(j + 1)).trim(); |
| 741 | table.put(key, value); |
| 742 | break; |
| 743 | } |
| 744 | } |
| 745 | } |
| 746 | return table; |
| 747 | } |
| 748 | |
| 749 | /** |
| 750 | * Parses key-value pairs under [realms]. The key would be the realm |
| 751 | * name, the value would be another hashtable which contains |
| 752 | * information for the realm given within a pair of braces. |
| 753 | */ |
| 754 | private Hashtable<String,Hashtable<String,Vector<String>>> parseRealmField(Vector<String> v, int start, int end) { |
| 755 | Hashtable<String,Hashtable<String,Vector<String>>> table = new Hashtable<String,Hashtable<String,Vector<String>>> (); |
| 756 | String line; |
| 757 | for (int i = start; i < end; i++) { |
| 758 | line = v.elementAt(i).trim(); |
| 759 | if (line.endsWith("{")) { |
| 760 | String key = ""; |
| 761 | for (int j = 0; j < line.length(); j++) { |
| 762 | if (line.charAt(j) == '=') { |
| 763 | key = line.substring(0, j).trim(); |
| 764 | // get the key |
| 765 | break; |
| 766 | } |
| 767 | } |
| 768 | for (int k = i + 1; k < end; k++) { |
| 769 | boolean found = false; |
| 770 | line = v.elementAt(k).trim(); |
| 771 | for (int l = 0; l < line.length(); l++) { |
| 772 | if (line.charAt(l) == '}') { |
| 773 | found = true; |
| 774 | break; |
| 775 | } |
| 776 | } |
| 777 | if (found == true) { |
| 778 | Hashtable<String,Vector<String>> temp = parseRealmFieldEx(v, i + 1, k); |
| 779 | table.put(key, temp); |
| 780 | i = k; |
| 781 | found = false; |
| 782 | break; |
| 783 | } |
| 784 | |
| 785 | } |
| 786 | } |
| 787 | } |
| 788 | return table; |
| 789 | } |
| 790 | |
| 791 | /** |
| 792 | * Parses key-value pairs within each braces under [realms]. |
| 793 | */ |
| 794 | private Hashtable<String,Vector<String>> parseRealmFieldEx(Vector<String> v, int start, int end) { |
| 795 | Hashtable<String,Vector<String>> table = |
| 796 | new Hashtable<String,Vector<String>> (); |
| 797 | Vector<String> keyVector = new Vector<String> (); |
| 798 | Vector<String> nameVector = new Vector<String> (); |
| 799 | String line = ""; |
| 800 | String key; |
| 801 | for (int i = start; i < end; i++) { |
| 802 | line = v.elementAt(i); |
| 803 | for (int j = 0; j < line.length(); j++) { |
| 804 | if (line.charAt(j) == '=') { |
| 805 | int index; |
| 806 | key = line.substring(0, j - 1).trim(); |
| 807 | if (! exists(key, keyVector)) { |
| 808 | keyVector.addElement(key); |
| 809 | nameVector = new Vector<String> (); |
| 810 | } else { |
| 811 | nameVector = table.get(key); |
| 812 | } |
| 813 | nameVector.addElement((line.substring(j + 1)).trim()); |
| 814 | table.put(key, nameVector); |
| 815 | break; |
| 816 | } |
| 817 | } |
| 818 | } |
| 819 | return table; |
| 820 | } |
| 821 | |
| 822 | /** |
| 823 | * Compares the key with the known keys to see if it exists. |
| 824 | */ |
| 825 | private boolean exists(String key, Vector v) { |
| 826 | boolean exists = false; |
| 827 | for (int i = 0; i < v.size(); i++) { |
| 828 | if (((String)(v.elementAt(i))).equals(key)) { |
| 829 | exists = true; |
| 830 | } |
| 831 | } |
| 832 | return exists; |
| 833 | } |
| 834 | |
| 835 | /** |
| 836 | * For testing purpose. This method lists all information being parsed from |
| 837 | * the configuration file to the hashtable. |
| 838 | */ |
| 839 | public void listTable() { |
| 840 | listTable(stanzaTable); |
| 841 | } |
| 842 | |
| 843 | private void listTable(Hashtable table) { |
| 844 | Vector v = new Vector(); |
| 845 | String key; |
| 846 | if (stanzaTable != null) { |
| 847 | for (Enumeration e = table.keys(); e.hasMoreElements(); ) { |
| 848 | key = (String)e.nextElement(); |
| 849 | Object object = table.get(key); |
| 850 | if (table == stanzaTable) { |
| 851 | System.out.println("[" + key + "]"); |
| 852 | } |
| 853 | if (object instanceof Hashtable) { |
| 854 | if (table != stanzaTable) |
| 855 | System.out.println("\t" + key + " = {"); |
| 856 | listTable((Hashtable)object); |
| 857 | if (table != stanzaTable) |
| 858 | System.out.println("\t}"); |
| 859 | |
| 860 | } else if (object instanceof String) { |
| 861 | System.out.println("\t" + key + " = " + |
| 862 | (String)table.get(key)); |
| 863 | } else if (object instanceof Vector) { |
| 864 | v = (Vector)object; |
| 865 | for (int i = 0; i < v.size(); i++) { |
| 866 | System.out.println("\t" + key + " = " + |
| 867 | (String)v.elementAt(i)); |
| 868 | } |
| 869 | } |
| 870 | } |
| 871 | } else { |
| 872 | System.out.println("Configuration file not found."); |
| 873 | } |
| 874 | } |
| 875 | |
| 876 | /** |
| 877 | * Returns the default encryption types. |
| 878 | * |
| 879 | */ |
| 880 | public int[] defaultEtype(String enctypes) { |
| 881 | String default_enctypes; |
| 882 | default_enctypes = getDefault(enctypes, "libdefaults"); |
| 883 | String delim = " "; |
| 884 | StringTokenizer st; |
| 885 | int[] etype; |
| 886 | if (default_enctypes == null) { |
| 887 | if (DEBUG) { |
| 888 | System.out.println("Using builtin default etypes for " + |
| 889 | enctypes); |
| 890 | } |
| 891 | etype = EType.getBuiltInDefaults(); |
| 892 | } else { |
| 893 | for (int j = 0; j < default_enctypes.length(); j++) { |
| 894 | if (default_enctypes.substring(j, j + 1).equals(",")) { |
| 895 | // only two delimiters are allowed to use |
| 896 | // according to Kerberos DCE doc. |
| 897 | delim = ","; |
| 898 | break; |
| 899 | } |
| 900 | } |
| 901 | st = new StringTokenizer(default_enctypes, delim); |
| 902 | int len = st.countTokens(); |
| 903 | ArrayList<Integer> ls = new ArrayList<Integer> (len); |
| 904 | int type; |
| 905 | for (int i = 0; i < len; i++) { |
| 906 | type = getType(st.nextToken()); |
| 907 | if ((type != -1) && |
| 908 | (EType.isSupported(type))) { |
| 909 | ls.add(type); |
| 910 | } |
| 911 | } |
| 912 | if (ls.size() == 0) { |
| 913 | if (DEBUG) { |
| 914 | System.out.println( |
| 915 | "no supported default etypes for " + enctypes); |
| 916 | } |
| 917 | return null; |
| 918 | } else { |
| 919 | etype = new int[ls.size()]; |
| 920 | for (int i = 0; i < etype.length; i++) { |
| 921 | etype[i] = ls.get(i); |
| 922 | } |
| 923 | } |
| 924 | } |
| 925 | |
| 926 | if (DEBUG) { |
| 927 | System.out.print("default etypes for " + enctypes + ":"); |
| 928 | for (int i = 0; i < etype.length; i++) { |
| 929 | System.out.print(" " + etype[i]); |
| 930 | } |
| 931 | System.out.println("."); |
| 932 | } |
| 933 | return etype; |
| 934 | } |
| 935 | |
| 936 | |
| 937 | /** |
| 938 | * Get the etype and checksum value for the specified encryption and |
| 939 | * checksum type. |
| 940 | * |
| 941 | */ |
| 942 | /* |
| 943 | * This method converts the string representation of encryption type and |
| 944 | * checksum type to int value that can be later used by EType and |
| 945 | * Checksum classes. |
| 946 | */ |
| 947 | public int getType(String input) { |
| 948 | int result = -1; |
| 949 | if (input == null) { |
| 950 | return result; |
| 951 | } |
| 952 | if (input.startsWith("d") || (input.startsWith("D"))) { |
| 953 | if (input.equalsIgnoreCase("des-cbc-crc")) { |
| 954 | result = EncryptedData.ETYPE_DES_CBC_CRC; |
| 955 | } else if (input.equalsIgnoreCase("des-cbc-md5")) { |
| 956 | result = EncryptedData.ETYPE_DES_CBC_MD5; |
| 957 | } else if (input.equalsIgnoreCase("des-mac")) { |
| 958 | result = Checksum.CKSUMTYPE_DES_MAC; |
| 959 | } else if (input.equalsIgnoreCase("des-mac-k")) { |
| 960 | result = Checksum.CKSUMTYPE_DES_MAC_K; |
| 961 | } else if (input.equalsIgnoreCase("des-cbc-md4")) { |
| 962 | result = EncryptedData.ETYPE_DES_CBC_MD4; |
| 963 | } else if (input.equalsIgnoreCase("des3-cbc-sha1") || |
| 964 | input.equalsIgnoreCase("des3-hmac-sha1") || |
| 965 | input.equalsIgnoreCase("des3-cbc-sha1-kd") || |
| 966 | input.equalsIgnoreCase("des3-cbc-hmac-sha1-kd")) { |
| 967 | result = EncryptedData.ETYPE_DES3_CBC_HMAC_SHA1_KD; |
| 968 | } |
| 969 | } else if (input.startsWith("a") || (input.startsWith("A"))) { |
| 970 | // AES |
| 971 | if (input.equalsIgnoreCase("aes128-cts") || |
| 972 | input.equalsIgnoreCase("aes128-cts-hmac-sha1-96")) { |
| 973 | result = EncryptedData.ETYPE_AES128_CTS_HMAC_SHA1_96; |
| 974 | } else if (input.equalsIgnoreCase("aes256-cts") || |
| 975 | input.equalsIgnoreCase("aes256-cts-hmac-sha1-96")) { |
| 976 | result = EncryptedData.ETYPE_AES256_CTS_HMAC_SHA1_96; |
| 977 | // ARCFOUR-HMAC |
| 978 | } else if (input.equalsIgnoreCase("arcfour-hmac") || |
| 979 | input.equalsIgnoreCase("arcfour-hmac-md5")) { |
| 980 | result = EncryptedData.ETYPE_ARCFOUR_HMAC; |
| 981 | } |
| 982 | // RC4-HMAC |
| 983 | } else if (input.equalsIgnoreCase("rc4-hmac")) { |
| 984 | result = EncryptedData.ETYPE_ARCFOUR_HMAC; |
| 985 | } else if (input.equalsIgnoreCase("CRC32")) { |
| 986 | result = Checksum.CKSUMTYPE_CRC32; |
| 987 | } else if (input.startsWith("r") || (input.startsWith("R"))) { |
| 988 | if (input.equalsIgnoreCase("rsa-md5")) { |
| 989 | result = Checksum.CKSUMTYPE_RSA_MD5; |
| 990 | } else if (input.equalsIgnoreCase("rsa-md5-des")) { |
| 991 | result = Checksum.CKSUMTYPE_RSA_MD5_DES; |
| 992 | } |
| 993 | } else if (input.equalsIgnoreCase("hmac-sha1-des3-kd")) { |
| 994 | result = Checksum.CKSUMTYPE_HMAC_SHA1_DES3_KD; |
| 995 | } else if (input.equalsIgnoreCase("hmac-sha1-96-aes128")) { |
| 996 | result = Checksum.CKSUMTYPE_HMAC_SHA1_96_AES128; |
| 997 | } else if (input.equalsIgnoreCase("hmac-sha1-96-aes256")) { |
| 998 | result = Checksum.CKSUMTYPE_HMAC_SHA1_96_AES256; |
| 999 | } else if (input.equalsIgnoreCase("hmac-md5-rc4") || |
| 1000 | input.equalsIgnoreCase("hmac-md5-arcfour") || |
| 1001 | input.equalsIgnoreCase("hmac-md5-enc")) { |
| 1002 | result = Checksum.CKSUMTYPE_HMAC_MD5_ARCFOUR; |
| 1003 | } else if (input.equalsIgnoreCase("NULL")) { |
| 1004 | result = EncryptedData.ETYPE_NULL; |
| 1005 | } |
| 1006 | |
| 1007 | return result; |
| 1008 | } |
| 1009 | |
| 1010 | /** |
| 1011 | * Resets the default kdc realm. |
| 1012 | * We do not need to synchronize these methods since assignments are atomic |
| 1013 | */ |
| 1014 | public void resetDefaultRealm(String realm) { |
| 1015 | defaultRealm = realm; |
| 1016 | if (DEBUG) { |
| 1017 | System.out.println(">>> Config reset default kdc " + defaultRealm); |
| 1018 | } |
| 1019 | |
| 1020 | } |
| 1021 | |
| 1022 | /** |
| 1023 | * Check to use addresses in tickets |
| 1024 | * use addresses if "no_addresses" or "noaddresses" is set to false |
| 1025 | */ |
| 1026 | public boolean useAddresses() { |
| 1027 | boolean useAddr = false; |
| 1028 | // use addresses if "no_addresses" is set to false |
| 1029 | String value = getDefault("no_addresses", "libdefaults"); |
| 1030 | useAddr = (value != null && value.equalsIgnoreCase("false")); |
| 1031 | if (useAddr == false) { |
| 1032 | // use addresses if "noaddresses" is set to false |
| 1033 | value = getDefault("noaddresses", "libdefaults"); |
| 1034 | useAddr = (value != null && value.equalsIgnoreCase("false")); |
| 1035 | } |
| 1036 | return useAddr; |
| 1037 | } |
| 1038 | |
| 1039 | /** |
| 1040 | * Check if need to use DNS to locate Kerberos services |
| 1041 | */ |
| 1042 | public boolean useDNS(String name) { |
| 1043 | boolean value = getDefaultBooleanValue(name, "libdefaults"); |
| 1044 | if (value == false) { |
| 1045 | value = getDefaultBooleanValue("dns_fallback", "libdefaults"); |
| 1046 | } |
| 1047 | return value; |
| 1048 | } |
| 1049 | |
| 1050 | /** |
| 1051 | * Check if need to use DNS to locate the KDC |
| 1052 | */ |
| 1053 | public boolean useDNS_KDC() { |
| 1054 | return useDNS("dns_lookup_kdc"); |
| 1055 | } |
| 1056 | |
| 1057 | /* |
| 1058 | * Check if need to use DNS to locate the Realm |
| 1059 | */ |
| 1060 | public boolean useDNS_Realm() { |
| 1061 | return useDNS("dns_lookup_realm"); |
| 1062 | } |
| 1063 | |
| 1064 | /** |
| 1065 | * Gets default realm. |
| 1066 | */ |
| 1067 | public String getDefaultRealm() throws KrbException { |
| 1068 | String realm = getDefault("default_realm", "libdefaults"); |
| 1069 | if ((realm == null) && useDNS_Realm()) { |
| 1070 | // use DNS to locate Kerberos realm |
| 1071 | realm = getRealmFromDNS(); |
| 1072 | } |
| 1073 | return realm; |
| 1074 | } |
| 1075 | |
| 1076 | /** |
| 1077 | * Returns a list of KDC's with each KDC separated by a space |
| 1078 | * |
| 1079 | * @param realm the realm for which the master KDC is desired |
| 1080 | * @return the list of KDCs |
| 1081 | */ |
| 1082 | public String getKDCList(String realm) throws KrbException { |
| 1083 | if (realm == null) { |
| 1084 | realm = getDefaultRealm(); |
| 1085 | } |
| 1086 | String kdcs = getDefault("kdc", realm); |
| 1087 | if ((kdcs == null) && useDNS_KDC()) { |
| 1088 | // use DNS to locate KDC |
| 1089 | kdcs = getKDCFromDNS(realm); |
| 1090 | } |
| 1091 | return kdcs; |
| 1092 | } |
| 1093 | |
| 1094 | /** |
| 1095 | * Locate Kerberos realm using DNS |
| 1096 | * |
| 1097 | * @return the Kerberos realm |
| 1098 | */ |
| 1099 | private String getRealmFromDNS() throws KrbException { |
| 1100 | // use DNS to locate Kerberos realm |
| 1101 | String realm = null; |
| 1102 | String hostName = null; |
| 1103 | try { |
| 1104 | hostName = InetAddress.getLocalHost().getHostName(); |
| 1105 | } catch (UnknownHostException e) { |
| 1106 | KrbException ke = new KrbException(Krb5.KRB_ERR_GENERIC, |
| 1107 | "Unable to locate Kerberos realm: " + e.getMessage()); |
| 1108 | ke.initCause(e); |
| 1109 | throw (ke); |
| 1110 | } |
| 1111 | // get the domain realm mapping from the configuration |
| 1112 | String mapRealm = PrincipalName.mapHostToRealm(hostName); |
| 1113 | String[] records = null; |
| 1114 | String newRealm = mapRealm; |
| 1115 | while ((records == null) && (newRealm != null)) { |
| 1116 | // locate DNS TXT record |
| 1117 | records = KrbServiceLocator.getKerberosService(newRealm); |
| 1118 | newRealm = Realm.parseRealmComponent(newRealm); |
| 1119 | // if no DNS TXT records found, try again using sub-realm |
| 1120 | } |
| 1121 | if (records == null) { |
| 1122 | // no DNS TXT records |
| 1123 | throw new KrbException(Krb5.KRB_ERR_GENERIC, |
| 1124 | "Unable to locate Kerberos realm"); |
| 1125 | } |
| 1126 | boolean found = false; |
| 1127 | for (int i = 0; i < records.length; i++) { |
| 1128 | if (records[i].equals(mapRealm)) { |
| 1129 | found = true; |
| 1130 | realm = records[i]; |
| 1131 | } |
| 1132 | } |
| 1133 | if (found == false) { |
| 1134 | throw new KrbException(Krb5.KRB_ERR_GENERIC, |
| 1135 | "Unable to locate Kerberos realm"); |
| 1136 | } |
| 1137 | return realm; |
| 1138 | } |
| 1139 | |
| 1140 | /** |
| 1141 | * Locate KDC using DNS |
| 1142 | * |
| 1143 | * @param realm the realm for which the master KDC is desired |
| 1144 | * @return the KDC |
| 1145 | */ |
| 1146 | private String getKDCFromDNS(String realm) throws KrbException { |
| 1147 | // use DNS to locate KDC |
| 1148 | String kdcs = null; |
| 1149 | String[] srvs = null; |
| 1150 | // locate DNS SRV record using UDP |
| 1151 | srvs = KrbServiceLocator.getKerberosService(realm, "_udp."); |
| 1152 | if (srvs == null) { |
| 1153 | // locate DNS SRV record using TCP |
| 1154 | srvs = KrbServiceLocator.getKerberosService(realm, "_tcp."); |
| 1155 | } |
| 1156 | if (srvs == null) { |
| 1157 | // no DNS SRV records |
| 1158 | throw new KrbException(Krb5.KRB_ERR_GENERIC, |
| 1159 | "Unable to locate KDC for realm " + realm); |
| 1160 | } |
| 1161 | for (int i = 0; i < srvs.length; i++) { |
| 1162 | String value = srvs[i]; |
| 1163 | for (int j = 0; j < srvs[i].length(); j++) { |
| 1164 | // filter the KDC name |
| 1165 | if (value.charAt(j) == ':') { |
| 1166 | kdcs = (value.substring(0, j)).trim(); |
| 1167 | } |
| 1168 | } |
| 1169 | } |
| 1170 | return kdcs; |
| 1171 | } |
| 1172 | |
| 1173 | static class FileExistsAction |
| 1174 | implements java.security.PrivilegedAction<Boolean> { |
| 1175 | |
| 1176 | private String fileName; |
| 1177 | |
| 1178 | public FileExistsAction(String fileName) { |
| 1179 | this.fileName = fileName; |
| 1180 | } |
| 1181 | |
| 1182 | public Boolean run() { |
| 1183 | return new File(fileName).exists(); |
| 1184 | } |
| 1185 | } |
| 1186 | |
| 1187 | } |