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| 1 | /* | ||
| 2 | * Copyright (c) 1999, 2003, 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 javax.security.auth.callback; | ||
| 27 | |||
| 28 | /** | ||
| 29 | * <p> Underlying security services instantiate and pass a | ||
| 30 | * <code>ConfirmationCallback</code> to the <code>handle</code> | ||
| 31 | * method of a <code>CallbackHandler</code> to ask for YES/NO, | ||
| 32 | * OK/CANCEL, YES/NO/CANCEL or other similar confirmations. | ||
| 33 | * | ||
| 34 | * @see javax.security.auth.callback.CallbackHandler | ||
| 35 | */ | ||
| 36 | public class ConfirmationCallback implements Callback, java.io.Serializable { | ||
| 37 | |||
| 38 | private static final long serialVersionUID = -9095656433782481624L; | ||
| 39 | |||
| 40 | /** | ||
| 41 | * Unspecified option type. | ||
| 42 | * | ||
| 43 | * <p> The <code>getOptionType</code> method returns this | ||
| 44 | * value if this <code>ConfirmationCallback</code> was instantiated | ||
| 45 | * with <code>options</code> instead of an <code>optionType</code>. | ||
| 46 | */ | ||
| 47 | public static final int UNSPECIFIED_OPTION = -1; | ||
| 48 | |||
| 49 | /** | ||
| 50 | * YES/NO confirmation option. | ||
| 51 | * | ||
| 52 | * <p> An underlying security service specifies this as the | ||
| 53 | * <code>optionType</code> to a <code>ConfirmationCallback</code> | ||
| 54 | * constructor if it requires a confirmation which can be answered | ||
| 55 | * with either <code>YES</code> or <code>NO</code>. | ||
| 56 | */ | ||
| 57 | public static final int YES_NO_OPTION = 0; | ||
| 58 | |||
| 59 | /** | ||
| 60 | * YES/NO/CANCEL confirmation confirmation option. | ||
| 61 | * | ||
| 62 | * <p> An underlying security service specifies this as the | ||
| 63 | * <code>optionType</code> to a <code>ConfirmationCallback</code> | ||
| 64 | * constructor if it requires a confirmation which can be answered | ||
| 65 | * with either <code>YES</code>, <code>NO</code> or <code>CANCEL</code>. | ||
| 66 | */ | ||
| 67 | public static final int YES_NO_CANCEL_OPTION = 1; | ||
| 68 | |||
| 69 | /** | ||
| 70 | * OK/CANCEL confirmation confirmation option. | ||
| 71 | * | ||
| 72 | * <p> An underlying security service specifies this as the | ||
| 73 | * <code>optionType</code> to a <code>ConfirmationCallback</code> | ||
| 74 | * constructor if it requires a confirmation which can be answered | ||
| 75 | * with either <code>OK</code> or <code>CANCEL</code>. | ||
| 76 | */ | ||
| 77 | public static final int OK_CANCEL_OPTION = 2; | ||
| 78 | |||
| 79 | /** | ||
| 80 | * YES option. | ||
| 81 | * | ||
| 82 | * <p> If an <code>optionType</code> was specified to this | ||
| 83 | * <code>ConfirmationCallback</code>, this option may be specified as a | ||
| 84 | * <code>defaultOption</code> or returned as the selected index. | ||
| 85 | */ | ||
| 86 | public static final int YES = 0; | ||
| 87 | |||
| 88 | /** | ||
| 89 | * NO option. | ||
| 90 | * | ||
| 91 | * <p> If an <code>optionType</code> was specified to this | ||
| 92 | * <code>ConfirmationCallback</code>, this option may be specified as a | ||
| 93 | * <code>defaultOption</code> or returned as the selected index. | ||
| 94 | */ | ||
| 95 | public static final int NO = 1; | ||
| 96 | |||
| 97 | /** | ||
| 98 | * CANCEL option. | ||
| 99 | * | ||
| 100 | * <p> If an <code>optionType</code> was specified to this | ||
| 101 | * <code>ConfirmationCallback</code>, this option may be specified as a | ||
| 102 | * <code>defaultOption</code> or returned as the selected index. | ||
| 103 | */ | ||
| 104 | public static final int CANCEL = 2; | ||
| 105 | |||
| 106 | /** | ||
| 107 | * OK option. | ||
| 108 | * | ||
| 109 | * <p> If an <code>optionType</code> was specified to this | ||
| 110 | * <code>ConfirmationCallback</code>, this option may be specified as a | ||
| 111 | * <code>defaultOption</code> or returned as the selected index. | ||
| 112 | */ | ||
| 113 | public static final int OK = 3; | ||
| 114 | |||
| 115 | /** INFORMATION message type. */ | ||
| 116 | public static final int INFORMATION = 0; | ||
| 117 | |||
| 118 | /** WARNING message type. */ | ||
| 119 | public static final int WARNING = 1; | ||
| 120 | |||
| 121 | /** ERROR message type. */ | ||
| 122 | public static final int ERROR = 2; | ||
| 123 | /** | ||
| 124 | * @serial | ||
| 125 | * @since 1.4 | ||
| 126 | */ | ||
| 127 | private String prompt; | ||
| 128 | /** | ||
| 129 | * @serial | ||
| 130 | * @since 1.4 | ||
| 131 | */ | ||
| 132 | private int messageType; | ||
| 133 | /** | ||
| 134 | * @serial | ||
| 135 | * @since 1.4 | ||
| 136 | */ | ||
| 137 | private int optionType = UNSPECIFIED_OPTION; | ||
| 138 | /** | ||
| 139 | * @serial | ||
| 140 | * @since 1.4 | ||
| 141 | */ | ||
| 142 | private int defaultOption; | ||
| 143 | /** | ||
| 144 | * @serial | ||
| 145 | * @since 1.4 | ||
| 146 | */ | ||
| 147 | private String[] options; | ||
| 148 | /** | ||
| 149 | * @serial | ||
| 150 | * @since 1.4 | ||
| 151 | */ | ||
| 152 | private int selection; | ||
| 153 | |||
| 154 | /** | ||
| 155 | * Construct a <code>ConfirmationCallback</code> with a | ||
| 156 | * message type, an option type and a default option. | ||
| 157 | * | ||
| 158 | * <p> Underlying security services use this constructor if | ||
| 159 | * they require either a YES/NO, YES/NO/CANCEL or OK/CANCEL | ||
| 160 | * confirmation. | ||
| 161 | * | ||
| 162 | * <p> | ||
| 163 | * | ||
| 164 | * @param messageType the message type (<code>INFORMATION</code>, | ||
| 165 | * <code>WARNING</code> or <code>ERROR</code>). <p> | ||
| 166 | * | ||
| 167 | * @param optionType the option type (<code>YES_NO_OPTION</code>, | ||
| 168 | * <code>YES_NO_CANCEL_OPTION</code> or | ||
| 169 | * <code>OK_CANCEL_OPTION</code>). <p> | ||
| 170 | * | ||
| 171 | * @param defaultOption the default option | ||
| 172 | * from the provided optionType (<code>YES</code>, | ||
| 173 | * <code>NO</code>, <code>CANCEL</code> or | ||
| 174 | * <code>OK</code>). | ||
| 175 | * | ||
| 176 | * @exception IllegalArgumentException if messageType is not either | ||
| 177 | * <code>INFORMATION</code>, <code>WARNING</code>, | ||
| 178 | * or <code>ERROR</code>, if optionType is not either | ||
| 179 | * <code>YES_NO_OPTION</code>, | ||
| 180 | * <code>YES_NO_CANCEL_OPTION</code>, or | ||
| 181 | * <code>OK_CANCEL_OPTION</code>, | ||
| 182 | * or if <code>defaultOption</code> | ||
| 183 | * does not correspond to one of the options in | ||
| 184 | * <code>optionType</code>. | ||
| 185 | */ | ||
| 186 | public ConfirmationCallback(int messageType, | ||
| 187 | int optionType, int defaultOption) { | ||
| 188 | |||
| 189 | if (messageType < INFORMATION || messageType > ERROR || | ||
| 190 | optionType < YES_NO_OPTION || optionType > OK_CANCEL_OPTION) | ||
| 191 | throw new IllegalArgumentException(); | ||
| 192 | |||
| 193 | switch (optionType) { | ||
| 194 | case YES_NO_OPTION: | ||
| 195 | if (defaultOption != YES && defaultOption != NO) | ||
| 196 | throw new IllegalArgumentException(); | ||
| 197 | break; | ||
| 198 | case YES_NO_CANCEL_OPTION: | ||
| 199 | if (defaultOption != YES && defaultOption != NO && | ||
| 200 | defaultOption != CANCEL) | ||
| 201 | throw new IllegalArgumentException(); | ||
| 202 | break; | ||
| 203 | case OK_CANCEL_OPTION: | ||
| 204 | if (defaultOption != OK && defaultOption != CANCEL) | ||
| 205 | throw new IllegalArgumentException(); | ||
| 206 | break; | ||
| 207 | } | ||
| 208 | |||
| 209 | this.messageType = messageType; | ||
| 210 | this.optionType = optionType; | ||
| 211 | this.defaultOption = defaultOption; | ||
| 212 | } | ||
| 213 | |||
| 214 | /** | ||
| 215 | * Construct a <code>ConfirmationCallback</code> with a | ||
| 216 | * message type, a list of options and a default option. | ||
| 217 | * | ||
| 218 | * <p> Underlying security services use this constructor if | ||
| 219 | * they require a confirmation different from the available preset | ||
| 220 | * confirmations provided (for example, CONTINUE/ABORT or STOP/GO). | ||
| 221 | * The confirmation options are listed in the <code>options</code> array, | ||
| 222 | * and are displayed by the <code>CallbackHandler</code> implementation | ||
| 223 | * in a manner consistent with the way preset options are displayed. | ||
| 224 | * | ||
| 225 | * <p> | ||
| 226 | * | ||
| 227 | * @param messageType the message type (<code>INFORMATION</code>, | ||
| 228 | * <code>WARNING</code> or <code>ERROR</code>). <p> | ||
| 229 | * | ||
| 230 | * @param options the list of confirmation options. <p> | ||
| 231 | * | ||
| 232 | * @param defaultOption the default option, represented as an index | ||
| 233 | * into the <code>options</code> array. | ||
| 234 | * | ||
| 235 | * @exception IllegalArgumentException if messageType is not either | ||
| 236 | * <code>INFORMATION</code>, <code>WARNING</code>, | ||
| 237 | * or <code>ERROR</code>, if <code>options</code> is null, | ||
| 238 | * if <code>options</code> has a length of 0, | ||
| 239 | * if any element from <code>options</code> is null, | ||
| 240 | * if any element from <code>options</code> | ||
| 241 | * has a length of 0, or if <code>defaultOption</code> | ||
| 242 | * does not lie within the array boundaries of | ||
| 243 | * <code>options</code>. | ||
| 244 | */ | ||
| 245 | public ConfirmationCallback(int messageType, | ||
| 246 | String[] options, int defaultOption) { | ||
| 247 | |||
| 248 | if (messageType < INFORMATION || messageType > ERROR || | ||
| 249 | options == null || options.length == 0 || | ||
| 250 | defaultOption < 0 || defaultOption >= options.length) | ||
| 251 | throw new IllegalArgumentException(); | ||
| 252 | |||
| 253 | for (int i = 0; i < options.length; i++) { | ||
| 254 | if (options[i] == null || options[i].length() == 0) | ||
| 255 | throw new IllegalArgumentException(); | ||
| 256 | } | ||
| 257 | |||
| 258 | this.messageType = messageType; | ||
| 259 | this.options = options; | ||
| 260 | this.defaultOption = defaultOption; | ||
| 261 | } | ||
| 262 | |||
| 263 | /** | ||
| 264 | * Construct a <code>ConfirmationCallback</code> with a prompt, | ||
| 265 | * message type, an option type and a default option. | ||
| 266 | * | ||
| 267 | * <p> Underlying security services use this constructor if | ||
| 268 | * they require either a YES/NO, YES/NO/CANCEL or OK/CANCEL | ||
| 269 | * confirmation. | ||
| 270 | * | ||
| 271 | * <p> | ||
| 272 | * | ||
| 273 | * @param prompt the prompt used to describe the list of options. <p> | ||
| 274 | * | ||
| 275 | * @param messageType the message type (<code>INFORMATION</code>, | ||
| 276 | * <code>WARNING</code> or <code>ERROR</code>). <p> | ||
| 277 | * | ||
| 278 | * @param optionType the option type (<code>YES_NO_OPTION</code>, | ||
| 279 | * <code>YES_NO_CANCEL_OPTION</code> or | ||
| 280 | * <code>OK_CANCEL_OPTION</code>). <p> | ||
| 281 | * | ||
| 282 | * @param defaultOption the default option | ||
| 283 | * from the provided optionType (<code>YES</code>, | ||
| 284 | * <code>NO</code>, <code>CANCEL</code> or | ||
| 285 | * <code>OK</code>). | ||
| 286 | * | ||
| 287 | * @exception IllegalArgumentException if <code>prompt</code> is null, | ||
| 288 | * if <code>prompt</code> has a length of 0, | ||
| 289 | * if messageType is not either | ||
| 290 | * <code>INFORMATION</code>, <code>WARNING</code>, | ||
| 291 | * or <code>ERROR</code>, if optionType is not either | ||
| 292 | * <code>YES_NO_OPTION</code>, | ||
| 293 | * <code>YES_NO_CANCEL_OPTION</code>, or | ||
| 294 | * <code>OK_CANCEL_OPTION</code>, | ||
| 295 | * or if <code>defaultOption</code> | ||
| 296 | * does not correspond to one of the options in | ||
| 297 | * <code>optionType</code>. | ||
| 298 | */ | ||
| 299 | public ConfirmationCallback(String prompt, int messageType, | ||
| 300 | int optionType, int defaultOption) { | ||
| 301 | |||
| 302 | if (prompt == null || prompt.length() == 0 || | ||
| 303 | messageType < INFORMATION || messageType > ERROR || | ||
| 304 | optionType < YES_NO_OPTION || optionType > OK_CANCEL_OPTION) | ||
| 305 | throw new IllegalArgumentException(); | ||
| 306 | |||
| 307 | switch (optionType) { | ||
| 308 | case YES_NO_OPTION: | ||
| 309 | if (defaultOption != YES && defaultOption != NO) | ||
| 310 | throw new IllegalArgumentException(); | ||
| 311 | break; | ||
| 312 | case YES_NO_CANCEL_OPTION: | ||
| 313 | if (defaultOption != YES && defaultOption != NO && | ||
| 314 | defaultOption != CANCEL) | ||
| 315 | throw new IllegalArgumentException(); | ||
| 316 | break; | ||
| 317 | case OK_CANCEL_OPTION: | ||
| 318 | if (defaultOption != OK && defaultOption != CANCEL) | ||
| 319 | throw new IllegalArgumentException(); | ||
| 320 | break; | ||
| 321 | } | ||
| 322 | |||
| 323 | this.prompt = prompt; | ||
| 324 | this.messageType = messageType; | ||
| 325 | this.optionType = optionType; | ||
| 326 | this.defaultOption = defaultOption; | ||
| 327 | } | ||
| 328 | |||
| 329 | /** | ||
| 330 | * Construct a <code>ConfirmationCallback</code> with a prompt, | ||
| 331 | * message type, a list of options and a default option. | ||
| 332 | * | ||
| 333 | * <p> Underlying security services use this constructor if | ||
| 334 | * they require a confirmation different from the available preset | ||
| 335 | * confirmations provided (for example, CONTINUE/ABORT or STOP/GO). | ||
| 336 | * The confirmation options are listed in the <code>options</code> array, | ||
| 337 | * and are displayed by the <code>CallbackHandler</code> implementation | ||
| 338 | * in a manner consistent with the way preset options are displayed. | ||
| 339 | * | ||
| 340 | * <p> | ||
| 341 | * | ||
| 342 | * @param prompt the prompt used to describe the list of options. <p> | ||
| 343 | * | ||
| 344 | * @param messageType the message type (<code>INFORMATION</code>, | ||
| 345 | * <code>WARNING</code> or <code>ERROR</code>). <p> | ||
| 346 | * | ||
| 347 | * @param options the list of confirmation options. <p> | ||
| 348 | * | ||
| 349 | * @param defaultOption the default option, represented as an index | ||
| 350 | * into the <code>options</code> array. | ||
| 351 | * | ||
| 352 | * @exception IllegalArgumentException if <code>prompt</code> is null, | ||
| 353 | * if <code>prompt</code> has a length of 0, | ||
| 354 | * if messageType is not either | ||
| 355 | * <code>INFORMATION</code>, <code>WARNING</code>, | ||
| 356 | * or <code>ERROR</code>, if <code>options</code> is null, | ||
| 357 | * if <code>options</code> has a length of 0, | ||
| 358 | * if any element from <code>options</code> is null, | ||
| 359 | * if any element from <code>options</code> | ||
| 360 | * has a length of 0, or if <code>defaultOption</code> | ||
| 361 | * does not lie within the array boundaries of | ||
| 362 | * <code>options</code>. | ||
| 363 | */ | ||
| 364 | public ConfirmationCallback(String prompt, int messageType, | ||
| 365 | String[] options, int defaultOption) { | ||
| 366 | |||
| 367 | if (prompt == null || prompt.length() == 0 || | ||
| 368 | messageType < INFORMATION || messageType > ERROR || | ||
| 369 | options == null || options.length == 0 || | ||
| 370 | defaultOption < 0 || defaultOption >= options.length) | ||
| 371 | throw new IllegalArgumentException(); | ||
| 372 | |||
| 373 | for (int i = 0; i < options.length; i++) { | ||
| 374 | if (options[i] == null || options[i].length() == 0) | ||
| 375 | throw new IllegalArgumentException(); | ||
| 376 | } | ||
| 377 | |||
| 378 | this.prompt = prompt; | ||
| 379 | this.messageType = messageType; | ||
| 380 | this.options = options; | ||
| 381 | this.defaultOption = defaultOption; | ||
| 382 | } | ||
| 383 | |||
| 384 | /** | ||
| 385 | * Get the prompt. | ||
| 386 | * | ||
| 387 | * <p> | ||
| 388 | * | ||
| 389 | * @return the prompt, or null if this <code>ConfirmationCallback</code> | ||
| 390 | * was instantiated without a <code>prompt</code>. | ||
| 391 | */ | ||
| 392 | public String getPrompt() { | ||
| 393 | return prompt; | ||
| 394 | } | ||
| 395 | |||
| 396 | /** | ||
| 397 | * Get the message type. | ||
| 398 | * | ||
| 399 | * <p> | ||
| 400 | * | ||
| 401 | * @return the message type (<code>INFORMATION</code>, | ||
| 402 | * <code>WARNING</code> or <code>ERROR</code>). | ||
| 403 | */ | ||
| 404 | public int getMessageType() { | ||
| 405 | return messageType; | ||
| 406 | } | ||
| 407 | |||
| 408 | /** | ||
| 409 | * Get the option type. | ||
| 410 | * | ||
| 411 | * <p> If this method returns <code>UNSPECIFIED_OPTION</code>, then this | ||
| 412 | * <code>ConfirmationCallback</code> was instantiated with | ||
| 413 | * <code>options</code> instead of an <code>optionType</code>. | ||
| 414 | * In this case, invoke the <code>getOptions</code> method | ||
| 415 | * to determine which confirmation options to display. | ||
| 416 | * | ||
| 417 | * <p> | ||
| 418 | * | ||
| 419 | * @return the option type (<code>YES_NO_OPTION</code>, | ||
| 420 | * <code>YES_NO_CANCEL_OPTION</code> or | ||
| 421 | * <code>OK_CANCEL_OPTION</code>), or | ||
| 422 | * <code>UNSPECIFIED_OPTION</code> if this | ||
| 423 | * <code>ConfirmationCallback</code> was instantiated with | ||
| 424 | * <code>options</code> instead of an <code>optionType</code>. | ||
| 425 | */ | ||
| 426 | public int getOptionType() { | ||
| 427 | return optionType; | ||
| 428 | } | ||
| 429 | |||
| 430 | /** | ||
| 431 | * Get the confirmation options. | ||
| 432 | * | ||
| 433 | * <p> | ||
| 434 | * | ||
| 435 | * @return the list of confirmation options, or null if this | ||
| 436 | * <code>ConfirmationCallback</code> was instantiated with | ||
| 437 | * an <code>optionType</code> instead of <code>options</code>. | ||
| 438 | */ | ||
| 439 | public String[] getOptions() { | ||
| 440 | return options; | ||
| 441 | } | ||
| 442 | |||
| 443 | /** | ||
| 444 | * Get the default option. | ||
| 445 | * | ||
| 446 | * <p> | ||
| 447 | * | ||
| 448 | * @return the default option, represented as | ||
| 449 | * <code>YES</code>, <code>NO</code>, <code>OK</code> or | ||
| 450 | * <code>CANCEL</code> if an <code>optionType</code> | ||
| 451 | * was specified to the constructor of this | ||
| 452 | * <code>ConfirmationCallback</code>. | ||
| 453 | * Otherwise, this method returns the default option as | ||
| 454 | * an index into the | ||
| 455 | * <code>options</code> array specified to the constructor | ||
| 456 | * of this <code>ConfirmationCallback</code>. | ||
| 457 | */ | ||
| 458 | public int getDefaultOption() { | ||
| 459 | return defaultOption; | ||
| 460 | } | ||
| 461 | |||
| 462 | /** | ||
| 463 | * Set the selected confirmation option. | ||
| 464 | * | ||
| 465 | * <p> | ||
| 466 | * | ||
| 467 | * @param selection the selection represented as <code>YES</code>, | ||
| 468 | * <code>NO</code>, <code>OK</code> or <code>CANCEL</code> | ||
| 469 | * if an <code>optionType</code> was specified to the constructor | ||
| 470 | * of this <code>ConfirmationCallback</code>. | ||
| 471 | * Otherwise, the selection represents the index into the | ||
| 472 | * <code>options</code> array specified to the constructor | ||
| 473 | * of this <code>ConfirmationCallback</code>. | ||
| 474 | * | ||
| 475 | * @see #getSelectedIndex | ||
| 476 | */ | ||
| 477 | public void setSelectedIndex(int selection) { | ||
| 478 | this.selection = selection; | ||
| 479 | } | ||
| 480 | |||
| 481 | /** | ||
| 482 | * Get the selected confirmation option. | ||
| 483 | * | ||
| 484 | * <p> | ||
| 485 | * | ||
| 486 | * @return the selected confirmation option represented as | ||
| 487 | * <code>YES</code>, <code>NO</code>, <code>OK</code> or | ||
| 488 | * <code>CANCEL</code> if an <code>optionType</code> | ||
| 489 | * was specified to the constructor of this | ||
| 490 | * <code>ConfirmationCallback</code>. | ||
| 491 | * Otherwise, this method returns the selected confirmation | ||
| 492 | * option as an index into the | ||
| 493 | * <code>options</code> array specified to the constructor | ||
| 494 | * of this <code>ConfirmationCallback</code>. | ||
| 495 | * | ||
| 496 | * @see #setSelectedIndex | ||
| 497 | */ | ||
| 498 | public int getSelectedIndex() { | ||
| 499 | return selection; | ||
| 500 | } | ||
| 501 | } | ||