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 198
 199 <h1>Class <code>luci.http.conditionals</code></h1>
 200
 201 <p></p>
 202
 203
 204
 205
 206
 207
 208
 209 <h2>Functions</h2>
 210 <table class="function_list">
 211
 212         <tr>
 213         <td class="name" nowrap><a href="#if_match">if_match</a>&nbsp;(req, stat)</td>
 214         <td class="summary">
 215
 216 14.24 / If-Match
 217
 218 Test whether the given message object contains an "If-Match" header and
 219 compare it against the given stat object.</td>
 220         </tr>
 221
 222         <tr>
 223         <td class="name" nowrap><a href="#if_modified_since">if_modified_since</a>&nbsp;(req, stat)</td>
 224         <td class="summary">
 225
 226 14.25 / If-Modified-Since
 227
 228 Test whether the given message object contains an "If-Modified-Since" header
 229 and compare it against the given stat object.</td>
 230         </tr>
 231
 232         <tr>
 233         <td class="name" nowrap><a href="#if_none_match">if_none_match</a>&nbsp;(req, stat)</td>
 234         <td class="summary">
 235
 236 14.26 / If-None-Match
 237
 238 Test whether the given message object contains an "If-None-Match" header and
 239 compare it against the given stat object.</td>
 240         </tr>
 241
 242         <tr>
 243         <td class="name" nowrap><a href="#if_range">if_range</a>&nbsp;(req, stat)</td>
 244         <td class="summary">
 245
 246 14.27 / If-Range
 247
 248 The If-Range header is currently not implemented due to the lack of general
 249 byte range stuff in luci.http.protocol .</td>
 250         </tr>
 251
 252         <tr>
 253         <td class="name" nowrap><a href="#if_unmodified_since">if_unmodified_since</a>&nbsp;(req, stat)</td>
 254         <td class="summary">
 255
 256 14.28 / If-Unmodified-Since
 257
 258 Test whether the given message object contains an "If-Unmodified-Since"
 259 header and compare it against the given stat object.</td>
 260         </tr>
 261
 262         <tr>
 263         <td class="name" nowrap><a href="#mk_etag">mk_etag</a>&nbsp;(stat)</td>
 264         <td class="summary">
 265
 266 Implement 14.19 / ETag.</td>
 267         </tr>
 268
 269 </table>
 270
 271
 272
 273
 274
 275
 276 <br/>
 277 <br/>
 278
 279
 280 <h2><a name="functions"></a>Functions</h2>
 281 <dl class="function">
 282
 283
 284
 285 <dt><a name="if_match"></a><strong>if_match</strong>&nbsp;(req, stat)</dt>
 286 <dd>
 287
 288
 289 14.24 / If-Match
 290
 291 Test whether the given message object contains an "If-Match" header and
 292 compare it against the given stat object.
 293
 294
 295 <h3>Parameters</h3>
 296 <ul>
 297
 298         <li>
 299           req: HTTP request message object
 300         </li>
 301
 302         <li>
 303           stat: A file.stat object
 304         </li>
 305
 306 </ul>
 307
 308
 309
 310
 311
 312
 313 <h3>Return values:</h3>
 314 <ol>
 315
 316         <li>Boolean indicating whether the precondition is ok
 317
 318         <li>Alternative status code if the precondition failed
 319
 320 </ol>
 321
 322
 323
 324 </dd>
 325
 326
 327
 328
 329 <dt><a name="if_modified_since"></a><strong>if_modified_since</strong>&nbsp;(req, stat)</dt>
 330 <dd>
 331
 332
 333 14.25 / If-Modified-Since
 334
 335 Test whether the given message object contains an "If-Modified-Since" header
 336 and compare it against the given stat object.
 337
 338
 339 <h3>Parameters</h3>
 340 <ul>
 341
 342         <li>
 343           req: HTTP request message object
 344         </li>
 345
 346         <li>
 347           stat: A file.stat object
 348         </li>
 349
 350 </ul>
 351
 352
 353
 354
 355
 356
 357 <h3>Return values:</h3>
 358 <ol>
 359
 360         <li>Boolean indicating whether the precondition is ok
 361
 362         <li>Alternative status code if the precondition failed
 363
 364         <li>Table containing extra HTTP headers if the precondition failed
 365
 366 </ol>
 367
 368
 369
 370 </dd>
 371
 372
 373
 374
 375 <dt><a name="if_none_match"></a><strong>if_none_match</strong>&nbsp;(req, stat)</dt>
 376 <dd>
 377
 378
 379 14.26 / If-None-Match
 380
 381 Test whether the given message object contains an "If-None-Match" header and
 382 compare it against the given stat object.
 383
 384
 385 <h3>Parameters</h3>
 386 <ul>
 387
 388         <li>
 389           req: HTTP request message object
 390         </li>
 391
 392         <li>
 393           stat: A file.stat object
 394         </li>
 395
 396 </ul>
 397
 398
 399
 400
 401
 402
 403 <h3>Return values:</h3>
 404 <ol>
 405
 406         <li>Boolean indicating whether the precondition is ok
 407
 408         <li>Alternative status code if the precondition failed
 409
 410         <li>Table containing extra HTTP headers if the precondition failed
 411
 412 </ol>
 413
 414
 415
 416 </dd>
 417
 418
 419
 420
 421 <dt><a name="if_range"></a><strong>if_range</strong>&nbsp;(req, stat)</dt>
 422 <dd>
 423
 424
 425 14.27 / If-Range
 426
 427 The If-Range header is currently not implemented due to the lack of general
 428 byte range stuff in luci.http.protocol . This function will always return
 429 false, 412 to indicate a failed precondition.
 430
 431
 432 <h3>Parameters</h3>
 433 <ul>
 434
 435         <li>
 436           req: HTTP request message object
 437         </li>
 438
 439         <li>
 440           stat: A file.stat object
 441         </li>
 442
 443 </ul>
 444
 445
 446
 447
 448
 449
 450 <h3>Return values:</h3>
 451 <ol>
 452
 453         <li>Boolean indicating whether the precondition is ok
 454
 455         <li>Alternative status code if the precondition failed
 456
 457 </ol>
 458
 459
 460
 461 </dd>
 462
 463
 464
 465
 466 <dt><a name="if_unmodified_since"></a><strong>if_unmodified_since</strong>&nbsp;(req, stat)</dt>
 467 <dd>
 468
 469
 470 14.28 / If-Unmodified-Since
 471
 472 Test whether the given message object contains an "If-Unmodified-Since"
 473 header and compare it against the given stat object.
 474
 475
 476 <h3>Parameters</h3>
 477 <ul>
 478
 479         <li>
 480           req: HTTP request message object
 481         </li>
 482
 483         <li>
 484           stat: A file.stat object
 485         </li>
 486
 487 </ul>
 488
 489
 490
 491
 492
 493
 494 <h3>Return values:</h3>
 495 <ol>
 496
 497         <li>Boolean indicating whether the precondition is ok
 498
 499         <li>Alternative status code if the precondition failed
 500
 501 </ol>
 502
 503
 504
 505 </dd>
 506
 507
 508
 509
 510 <dt><a name="mk_etag"></a><strong>mk_etag</strong>&nbsp;(stat)</dt>
 511 <dd>
 512
 513
 514 Implement 14.19 / ETag.
 515
 516
 517
 518 <h3>Parameters</h3>
 519 <ul>
 520
 521         <li>
 522           stat: A file.stat structure
 523         </li>
 524
 525 </ul>
 526
 527
 528
 529
 530
 531
 532 <h3>Return value:</h3>
 533 String containing the generated tag suitable for ETag headers
 534
 535
 536
 537 </dd>
 538
 539
 540 </dl>
 541
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