chrome/test/data/extensions/api_test/webrequest/test_blocking.js

   1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 var pass = chrome.test.callbackPass;
   6
   7 // Constants as functions, not to be called until after runTests.
   8 function getURLEchoUserAgent() {
   9   return getServerURL('echoheader?User-Agent');
  10 }
  11
  12 function getURLSetCookie() {
  13   return getServerURL('set-cookie?Foo=Bar');
  14 }
  15
  16 function getURLNonUTF8SetCookie() {
  17   return getServerURL('set-header?Set-Cookie%3A%20Foo%3D%FE%D1');
  18 }
  19
  20 function getURLHttpSimpleLoad() {
  21   return getServerURL('extensions/api_test/webrequest/simpleLoad/a.html');
  22 }
  23 function getURLHttpXHRData() {
  24   return getServerURL('extensions/api_test/webrequest/xhr/data.json');
  25 }
  26
  27 function toCharCodes(str) {
  28   var result = [];
  29   for (var i = 0; i < str.length; ++i) {
  30     result[i] = str.charCodeAt(i);
  31   }
  32   return result;
  33 }
  34
  35 runTests([
  36   // Navigates to a page with subresources, with a blocking handler that
  37   // cancels the page request. The page will not load, and we should not
  38   // see the subresources.
  39   function complexLoadCancelled() {
  40     expect(
  41       [  // events
  42         { label: "onBeforeRequest",
  43           event: "onBeforeRequest",
  44           details: {
  45             type: "main_frame",
  46             url: getURL("complexLoad/b.html"),
  47             frameUrl: getURL("complexLoad/b.html")
  48           },
  49           retval: {cancel: true}
  50         },
  51         // Cancelling is considered an error.
  52         { label: "onErrorOccurred",
  53           event: "onErrorOccurred",
  54           details: {
  55             url: getURL("complexLoad/b.html"),
  56             fromCache: false,
  57             error: "net::ERR_BLOCKED_BY_CLIENT"
  58             // Request to chrome-extension:// url has no IP.
  59           }
  60         },
  61       ],
  62       [  // event order
  63         ["onBeforeRequest", "onErrorOccurred"]
  64       ],
  65       {urls: ["<all_urls>"]},  // filter
  66       ["blocking"]);
  67     navigateAndWait(getURL("complexLoad/b.html"));
  68   },
  69
  70   // Navigates to a page with subresources, with a blocking handler that
  71   // cancels the page request. The page will not load, and we should not
  72   // see the subresources.
  73   function simpleLoadCancelledOnReceiveHeaders() {
  74     expect(
  75       [  // events
  76         { label: "onBeforeRequest",
  77           event: "onBeforeRequest",
  78           details: {
  79             method: "GET",
  80             type: "main_frame",
  81             url: getURLHttpSimpleLoad(),
  82             frameUrl: getURLHttpSimpleLoad()
  83           },
  84           retval: {cancel: false}
  85         },
  86         { label: "onBeforeSendHeaders",
  87           event: "onBeforeSendHeaders",
  88           details: {
  89             url: getURLHttpSimpleLoad(),
  90             // Note: no requestHeaders because we don't ask for them.
  91           },
  92         },
  93         { label: "onSendHeaders",
  94           event: "onSendHeaders",
  95           details: {
  96             url: getURLHttpSimpleLoad()
  97           }
  98         },
  99         { label: "onHeadersReceived",
 100           event: "onHeadersReceived",
 101           details: {
 102             url: getURLHttpSimpleLoad(),
 103             statusLine: "HTTP/1.1 200 OK",
 104             statusCode: 200,
 105           },
 106           retval: {cancel: true}
 107         },
 108         // Cancelling is considered an error.
 109         { label: "onErrorOccurred",
 110           event: "onErrorOccurred",
 111           details: {
 112             url: getURLHttpSimpleLoad(),
 113             fromCache: false,
 114             error: "net::ERR_BLOCKED_BY_CLIENT"
 115             // Request to chrome-extension:// url has no IP.
 116           }
 117         },
 118       ],
 119       [  // event order
 120         ["onBeforeRequest", "onBeforeSendHeaders", "onSendHeaders",
 121          "onHeadersReceived", "onErrorOccurred"]
 122       ],
 123       {urls: ["<all_urls>"]},  // filter
 124       ["blocking"]);
 125     navigateAndWait(getURLHttpSimpleLoad());
 126   },
 127
 128   // Navigates to a page and provides invalid header information. The request
 129   // should continue as if the headers were not changed.
 130   function simpleLoadIgnoreOnBeforeSendHeadersInvalidHeaders() {
 131     expect(
 132       [  // events
 133         { label: "onBeforeRequest",
 134           event: "onBeforeRequest",
 135           details: {
 136             method: "GET",
 137             type: "main_frame",
 138             url: getURLHttpSimpleLoad(),
 139             frameUrl: getURLHttpSimpleLoad()
 140           },
 141         },
 142         { label: "onBeforeSendHeaders",
 143           event: "onBeforeSendHeaders",
 144           details: {
 145             url: getURLHttpSimpleLoad(),
 146             requestHeadersValid: true
 147           },
 148           retval: {requestHeaders: [{name: "User-Agent"}]}
 149         },
 150         // The headers were invalid, so they should not be modified.
 151         // TODO(robwu): Test whether an error is logged to the console.
 152         { label: "onSendHeaders",
 153           event: "onSendHeaders",
 154           details: {
 155             url: getURLHttpSimpleLoad(),
 156             requestHeadersValid: true
 157           }
 158         },
 159         { label: "onHeadersReceived",
 160           event: "onHeadersReceived",
 161           details: {
 162             url: getURLHttpSimpleLoad(),
 163             statusLine: "HTTP/1.1 200 OK",
 164             statusCode: 200,
 165           }
 166         },
 167         { label: "onResponseStarted",
 168           event: "onResponseStarted",
 169           details: {
 170             url: getURLHttpSimpleLoad(),
 171             fromCache: false,
 172             statusCode: 200,
 173             ip: "127.0.0.1",
 174             statusLine: "HTTP/1.1 200 OK",
 175           }
 176         },
 177         { label: "onCompleted",
 178           event: "onCompleted",
 179           details: {
 180             url: getURLHttpSimpleLoad(),
 181             fromCache: false,
 182             statusCode: 200,
 183             ip: "127.0.0.1",
 184             statusLine: "HTTP/1.1 200 OK",
 185           }
 186         },
 187       ],
 188       [  // event order
 189         ["onBeforeRequest", "onBeforeSendHeaders", "onSendHeaders",
 190          "onHeadersReceived", "onResponseStarted", "onCompleted"]
 191       ],
 192       {urls: ["<all_urls>"]},  // filter
 193       ["blocking", "requestHeaders"]);
 194     navigateAndWait(getURLHttpSimpleLoad());
 195   },
 196
 197   // Navigates to a page and provides invalid header information. The request
 198   // should continue as if the headers were not changed.
 199   function simpleLoadIgnoreOnBeforeSendHeadersInvalidResponse() {
 200     // Exception handling seems to break this test, so disable it.
 201     // See http://crbug.com/370897. TODO(robwu): Fix me.
 202     chrome.test.setExceptionHandler(function(){});
 203     expect(
 204       [  // events
 205         { label: "onBeforeRequest",
 206           event: "onBeforeRequest",
 207           details: {
 208             method: "GET",
 209             type: "main_frame",
 210             url: getURLHttpSimpleLoad(),
 211             frameUrl: getURLHttpSimpleLoad()
 212           },
 213         },
 214         { label: "onBeforeSendHeaders",
 215           event: "onBeforeSendHeaders",
 216           details: {
 217             url: getURLHttpSimpleLoad(),
 218             requestHeadersValid: true
 219           },
 220           retval: {foo: "bar"}
 221         },
 222         // TODO(robwu): Test whether an error is logged to the console.
 223         { label: "onSendHeaders",
 224           event: "onSendHeaders",
 225           details: {
 226             url: getURLHttpSimpleLoad(),
 227             requestHeadersValid: true
 228           }
 229         },
 230         { label: "onHeadersReceived",
 231           event: "onHeadersReceived",
 232           details: {
 233             url: getURLHttpSimpleLoad(),
 234             statusLine: "HTTP/1.1 200 OK",
 235             statusCode: 200,
 236           }
 237         },
 238         { label: "onResponseStarted",
 239           event: "onResponseStarted",
 240           details: {
 241             url: getURLHttpSimpleLoad(),
 242             fromCache: false,
 243             statusCode: 200,
 244             ip: "127.0.0.1",
 245             statusLine: "HTTP/1.1 200 OK",
 246           }
 247         },
 248         { label: "onCompleted",
 249           event: "onCompleted",
 250           details: {
 251             url: getURLHttpSimpleLoad(),
 252             fromCache: false,
 253             statusCode: 200,
 254             ip: "127.0.0.1",
 255             statusLine: "HTTP/1.1 200 OK",
 256           }
 257         },
 258       ],
 259       [  // event order
 260         ["onBeforeRequest", "onBeforeSendHeaders", "onSendHeaders",
 261          "onHeadersReceived", "onResponseStarted", "onCompleted"]
 262       ],
 263       {urls: ["<all_urls>"]},  // filter
 264       ["blocking", "requestHeaders"]);
 265     navigateAndWait(getURLHttpSimpleLoad());
 266   },
 267
 268   // Navigates to a page with a blocking handler that redirects to a different
 269   // page.
 270   function complexLoadRedirected() {
 271     expect(
 272       [  // events
 273         { label: "onBeforeRequest-1",
 274           event: "onBeforeRequest",
 275           details: {
 276             url: getURL("complexLoad/a.html"),
 277             frameUrl: getURL("complexLoad/a.html")
 278           },
 279           retval: {redirectUrl: getURL("simpleLoad/a.html")}
 280         },
 281         { label: "onBeforeRedirect",
 282           event: "onBeforeRedirect",
 283           details: {
 284             url: getURL("complexLoad/a.html"),
 285             redirectUrl: getURL("simpleLoad/a.html"),
 286             fromCache: false,
 287             statusLine: "HTTP/1.1 307 Internal Redirect",
 288             statusCode: 307,
 289           }
 290         },
 291         { label: "onBeforeRequest-2",
 292           event: "onBeforeRequest",
 293           details: {
 294             url: getURL("simpleLoad/a.html"),
 295             frameUrl: getURL("simpleLoad/a.html"),
 296           },
 297         },
 298         { label: "onResponseStarted",
 299           event: "onResponseStarted",
 300           details: {
 301             url: getURL("simpleLoad/a.html"),
 302             fromCache: false,
 303             statusCode: 200,
 304             statusLine: "HTTP/1.1 200 OK",
 305             // Request to chrome-extension:// url has no IP.
 306           }
 307         },
 308         { label: "onCompleted",
 309           event: "onCompleted",
 310           details: {
 311             url: getURL("simpleLoad/a.html"),
 312             fromCache: false,
 313             statusCode: 200,
 314             statusLine: "HTTP/1.1 200 OK",
 315             // Request to chrome-extension:// url has no IP.
 316           }
 317         },
 318       ],
 319       [  // event order
 320         ["onBeforeRequest-1", "onBeforeRedirect", "onBeforeRequest-2",
 321          "onResponseStarted", "onCompleted"],
 322       ],
 323       {urls: ["<all_urls>"]}, // filter
 324       ["blocking"]);
 325     navigateAndWait(getURL("complexLoad/a.html"));
 326   },
 327
 328   // Tests redirect of <img crossorigin="anonymous" src="...">
 329   function crossOriginAnonymousRedirect() {
 330     testLoadCORSImage("anonymous");
 331   },
 332
 333   // Tests redirect of <img crossorigin="use-credentials" src="...">
 334   function crossOriginCredentialedRedirect() {
 335     testLoadCORSImage("use-credentials");
 336   },
 337
 338   // Loads a testserver page that echoes the User-Agent header that was
 339   // sent to fetch it. We modify the outgoing User-Agent in
 340   // onBeforeSendHeaders, so we should see that modified version.
 341   function modifyRequestHeaders() {
 342     expect(
 343       [  // events
 344         { label: "onBeforeRequest",
 345           event: "onBeforeRequest",
 346           details: {
 347             url: getURLEchoUserAgent(),
 348             frameUrl: getURLEchoUserAgent()
 349           }
 350         },
 351         { label: "onBeforeSendHeaders",
 352           event: "onBeforeSendHeaders",
 353           details: {
 354             url: getURLEchoUserAgent(),
 355             // Note: no requestHeaders because we don't ask for them.
 356           },
 357           retval: {requestHeaders: [{name: "User-Agent", value: "FoobarUA"}]}
 358         },
 359         { label: "onSendHeaders",
 360           event: "onSendHeaders",
 361           details: {
 362             url: getURLEchoUserAgent()
 363           }
 364         },
 365         { label: "onHeadersReceived",
 366           event: "onHeadersReceived",
 367           details: {
 368             url: getURLEchoUserAgent(),
 369             statusLine: "HTTP/1.1 200 OK",
 370             statusCode: 200,
 371           }
 372         },
 373         { label: "onResponseStarted",
 374           event: "onResponseStarted",
 375           details: {
 376             url: getURLEchoUserAgent(),
 377             fromCache: false,
 378             statusCode: 200,
 379             ip: "127.0.0.1",
 380             statusLine: "HTTP/1.1 200 OK",
 381           }
 382         },
 383         { label: "onCompleted",
 384           event: "onCompleted",
 385           details: {
 386             url: getURLEchoUserAgent(),
 387             fromCache: false,
 388             statusCode: 200,
 389             ip: "127.0.0.1",
 390             statusLine: "HTTP/1.1 200 OK",
 391           }
 392         },
 393       ],
 394       [  // event order
 395         ["onBeforeRequest", "onBeforeSendHeaders", "onSendHeaders",
 396          "onHeadersReceived", "onResponseStarted", "onCompleted"]
 397       ],
 398       {urls: ["<all_urls>"]}, ["blocking"]);
 399     // Check the page content for our modified User-Agent string.
 400     navigateAndWait(getURLEchoUserAgent(), function() {
 401       chrome.test.listenOnce(chrome.extension.onRequest, function(request) {
 402         chrome.test.assertTrue(request.pass, "Request header was not set.");
 403       });
 404       chrome.tabs.executeScript(tabId,
 405         {
 406           code: "chrome.extension.sendRequest(" +
 407               "{pass: document.body.innerText.indexOf('FoobarUA') >= 0});"
 408         });
 409     });
 410   },
 411
 412   // Loads a testserver page that echoes the User-Agent header that was
 413   // sent to fetch it. We modify the outgoing User-Agent in
 414   // onBeforeSendHeaders, so we should see that modified version.
 415   // In this version we check whether we can set binary header values.
 416   function modifyBinaryRequestHeaders() {
 417     expect(
 418       [  // events
 419         { label: "onBeforeRequest",
 420           event: "onBeforeRequest",
 421           details: {
 422             url: getURLEchoUserAgent(),
 423             frameUrl: getURLEchoUserAgent()
 424           }
 425         },
 426         { label: "onBeforeSendHeaders",
 427           event: "onBeforeSendHeaders",
 428           details: {
 429             url: getURLEchoUserAgent(),
 430             // Note: no requestHeaders because we don't ask for them.
 431           },
 432           retval: {requestHeaders: [{name: "User-Agent",
 433                                      binaryValue: toCharCodes("FoobarUA")}]}
 434         },
 435         { label: "onSendHeaders",
 436           event: "onSendHeaders",
 437           details: {
 438             url: getURLEchoUserAgent()
 439           }
 440         },
 441         { label: "onHeadersReceived",
 442           event: "onHeadersReceived",
 443           details: {
 444             url: getURLEchoUserAgent(),
 445             statusLine: "HTTP/1.1 200 OK",
 446             statusCode: 200,
 447           }
 448         },
 449         { label: "onResponseStarted",
 450           event: "onResponseStarted",
 451           details: {
 452             url: getURLEchoUserAgent(),
 453             fromCache: false,
 454             statusCode: 200,
 455             ip: "127.0.0.1",
 456             statusLine: "HTTP/1.1 200 OK",
 457           }
 458         },
 459         { label: "onCompleted",
 460           event: "onCompleted",
 461           details: {
 462             url: getURLEchoUserAgent(),
 463             fromCache: false,
 464             statusCode: 200,
 465             ip: "127.0.0.1",
 466             statusLine: "HTTP/1.1 200 OK",
 467           }
 468         },
 469       ],
 470       [  // event order
 471         ["onBeforeRequest", "onBeforeSendHeaders", "onSendHeaders",
 472          "onHeadersReceived", "onResponseStarted", "onCompleted"]
 473       ],
 474       {urls: ["<all_urls>"]}, ["blocking"]);
 475     // Check the page content for our modified User-Agent string.
 476     navigateAndWait(getURLEchoUserAgent(), function() {
 477       chrome.test.listenOnce(chrome.extension.onRequest, function(request) {
 478         chrome.test.assertTrue(request.pass, "Request header was not set.");
 479       });
 480       chrome.tabs.executeScript(tabId,
 481         {
 482           code: "chrome.extension.sendRequest(" +
 483               "{pass: document.body.innerText.indexOf('FoobarUA') >= 0});"
 484         });
 485     });
 486   },
 487
 488   // Loads a testserver page that sets a cookie "Foo=Bar" but removes
 489   // the cookies from the response headers so that they are not set.
 490   function modifyResponseHeaders() {
 491     expect(
 492       [  // events
 493         { label: "onBeforeRequest",
 494           event: "onBeforeRequest",
 495           details: {
 496             method: "GET",
 497             type: "main_frame",
 498             url: getURLSetCookie(),
 499             frameUrl: getURLSetCookie()
 500           }
 501         },
 502         { label: "onBeforeSendHeaders",
 503           event: "onBeforeSendHeaders",
 504           details: {
 505             url: getURLSetCookie(),
 506             // Note: no requestHeaders because we don't ask for them.
 507           },
 508         },
 509         { label: "onSendHeaders",
 510           event: "onSendHeaders",
 511           details: {
 512             url: getURLSetCookie(),
 513           }
 514         },
 515         { label: "onHeadersReceived",
 516           event: "onHeadersReceived",
 517           details: {
 518             url: getURLSetCookie(),
 519             statusLine: "HTTP/1.1 200 OK",
 520             statusCode: 200,
 521             responseHeadersExist: true,
 522           },
 523           retval_function: function(name, details) {
 524             responseHeaders = details.responseHeaders;
 525             var found = false;
 526             for (var i = 0; i < responseHeaders.length; ++i) {
 527               if (responseHeaders[i].name === "Set-Cookie" &&
 528                   responseHeaders[i].value.indexOf("Foo") != -1) {
 529                 found = true;
 530                 responseHeaders.splice(i);
 531                 break;
 532               }
 533             }
 534             chrome.test.assertTrue(found);
 535             return {responseHeaders: responseHeaders};
 536           }
 537         },
 538         { label: "onResponseStarted",
 539           event: "onResponseStarted",
 540           details: {
 541             url: getURLSetCookie(),
 542             fromCache: false,
 543             statusCode: 200,
 544             statusLine: "HTTP/1.1 200 OK",
 545             ip: "127.0.0.1",
 546             responseHeadersExist: true,
 547           }
 548         },
 549         { label: "onCompleted",
 550           event: "onCompleted",
 551           details: {
 552             url: getURLSetCookie(),
 553             fromCache: false,
 554             statusCode: 200,
 555             statusLine: "HTTP/1.1 200 OK",
 556             ip: "127.0.0.1",
 557             responseHeadersExist: true,
 558           }
 559         },
 560       ],
 561       [  // event order
 562         ["onBeforeRequest", "onBeforeSendHeaders", "onSendHeaders",
 563          "onHeadersReceived", "onResponseStarted", "onCompleted"]
 564       ],
 565       {urls: ["<all_urls>"]}, ["blocking", "responseHeaders"]);
 566     // Check that the cookie was really removed.
 567     navigateAndWait(getURLSetCookie(), function() {
 568       chrome.test.listenOnce(chrome.extension.onRequest, function(request) {
 569         chrome.test.assertTrue(request.pass, "Cookie was not removed.");
 570       });
 571       chrome.tabs.executeScript(tabId,
 572       { code: "chrome.extension.sendRequest(" +
 573             "{pass: document.cookie.indexOf('Foo') == -1});"
 574         });
 575     });
 576   },
 577
 578   // Loads a testserver page that sets a cookie "Foo=U+FDD1" which is not a
 579   // valid UTF-8 code point. Therefore, it cannot be passed to JavaScript
 580   // as a normal string.
 581   function handleNonUTF8InModifyResponseHeaders() {
 582     expect(
 583       [  // events
 584         { label: "onBeforeRequest",
 585           event: "onBeforeRequest",
 586           details: {
 587             method: "GET",
 588             type: "main_frame",
 589             url: getURLNonUTF8SetCookie(),
 590             frameUrl: getURLNonUTF8SetCookie()
 591           }
 592         },
 593         { label: "onBeforeSendHeaders",
 594           event: "onBeforeSendHeaders",
 595           details: {
 596             url: getURLNonUTF8SetCookie(),
 597             // Note: no requestHeaders because we don't ask for them.
 598           },
 599         },
 600         { label: "onSendHeaders",
 601           event: "onSendHeaders",
 602           details: {
 603             url: getURLNonUTF8SetCookie(),
 604           }
 605         },
 606         { label: "onHeadersReceived",
 607           event: "onHeadersReceived",
 608           details: {
 609             url: getURLNonUTF8SetCookie(),
 610             statusLine: "HTTP/1.1 200 OK",
 611             statusCode: 200,
 612             responseHeadersExist: true,
 613           },
 614           retval_function: function(name, details) {
 615             responseHeaders = details.responseHeaders;
 616             var found = false;
 617             var expectedValue = [
 618               "F".charCodeAt(0),
 619               "o".charCodeAt(0),
 620               "o".charCodeAt(0),
 621               0x3D, 0xFE, 0xD1
 622               ];
 623
 624             for (var i = 0; i < responseHeaders.length; ++i) {
 625               if (responseHeaders[i].name === "Set-Cookie" &&
 626                   deepEq(responseHeaders[i].binaryValue, expectedValue)) {
 627                 found = true;
 628                 responseHeaders.splice(i);
 629                 break;
 630               }
 631             }
 632             chrome.test.assertTrue(found);
 633             return {responseHeaders: responseHeaders};
 634           }
 635         },
 636         { label: "onResponseStarted",
 637           event: "onResponseStarted",
 638           details: {
 639             url: getURLNonUTF8SetCookie(),
 640             fromCache: false,
 641             statusCode: 200,
 642             statusLine: "HTTP/1.1 200 OK",
 643             ip: "127.0.0.1",
 644             responseHeadersExist: true,
 645           }
 646         },
 647         { label: "onCompleted",
 648           event: "onCompleted",
 649           details: {
 650             url: getURLNonUTF8SetCookie(),
 651             fromCache: false,
 652             statusCode: 200,
 653             statusLine: "HTTP/1.1 200 OK",
 654             ip: "127.0.0.1",
 655             responseHeadersExist: true,
 656           }
 657         },
 658       ],
 659       [  // event order
 660         ["onBeforeRequest", "onBeforeSendHeaders", "onSendHeaders",
 661          "onHeadersReceived", "onResponseStarted", "onCompleted"]
 662       ],
 663       {urls: ["<all_urls>"]}, ["blocking", "responseHeaders"]);
 664     // Check that the cookie was really removed.
 665     navigateAndWait(getURLNonUTF8SetCookie(), function() {
 666       chrome.test.listenOnce(chrome.extension.onRequest, function(request) {
 667         chrome.test.assertTrue(request.pass, "Cookie was not removed.");
 668       });
 669       chrome.tabs.executeScript(tabId,
 670       { code: "chrome.extension.sendRequest(" +
 671             "{pass: document.cookie.indexOf('Foo') == -1});"
 672         });
 673     });
 674   },
 675
 676   // Navigates to a page with a blocking handler that redirects to a different
 677   // non-http page during onHeadersReceived. The requested page should not be
 678   // loaded, and the redirect should succeed.
 679   function simpleLoadRedirectOnReceiveHeaders() {
 680     expect(
 681       [  // events
 682         { label: "onBeforeRequest-1",
 683           event: "onBeforeRequest",
 684           details: {
 685             method: "GET",
 686             type: "main_frame",
 687             url: getURLHttpSimpleLoad(),
 688             frameUrl: getURLHttpSimpleLoad()
 689           },
 690         },
 691         { label: "onBeforeSendHeaders",
 692           event: "onBeforeSendHeaders",
 693           details: {
 694             url: getURLHttpSimpleLoad(),
 695             // Note: no requestHeaders because we don't ask for them.
 696           },
 697         },
 698         { label: "onSendHeaders",
 699           event: "onSendHeaders",
 700           details: {
 701             url: getURLHttpSimpleLoad()
 702           }
 703         },
 704         { label: "onHeadersReceived",
 705           event: "onHeadersReceived",
 706           details: {
 707             url: getURLHttpSimpleLoad(),
 708             statusLine: "HTTP/1.1 200 OK",
 709             statusCode: 200,
 710           },
 711           retval: {redirectUrl: getURL("simpleLoad/a.html")}
 712         },
 713         { label: "onBeforeRedirect",
 714           event: "onBeforeRedirect",
 715           details: {
 716             url: getURLHttpSimpleLoad(),
 717             redirectUrl: getURL("simpleLoad/a.html"),
 718             statusLine: "HTTP/1.1 302 Found",
 719             statusCode: 302,
 720             fromCache: false,
 721             ip: "127.0.0.1",
 722           }
 723         },
 724         { label: "onBeforeRequest-2",
 725           event: "onBeforeRequest",
 726           details: {
 727             url: getURL("simpleLoad/a.html"),
 728             frameUrl: getURL("simpleLoad/a.html"),
 729           },
 730         },
 731         { label: "onResponseStarted",
 732           event: "onResponseStarted",
 733           details: {
 734             url: getURL("simpleLoad/a.html"),
 735             fromCache: false,
 736             statusCode: 200,
 737             statusLine: "HTTP/1.1 200 OK",
 738             // Request to chrome-extension:// url has no IP.
 739           }
 740         },
 741         { label: "onCompleted",
 742           event: "onCompleted",
 743           details: {
 744             url: getURL("simpleLoad/a.html"),
 745             fromCache: false,
 746             statusCode: 200,
 747             statusLine: "HTTP/1.1 200 OK",
 748             // Request to chrome-extension:// url has no IP.
 749           }
 750         },
 751       ],
 752       [  // event order
 753         ["onBeforeRequest-1", "onBeforeSendHeaders", "onSendHeaders",
 754          "onHeadersReceived", "onBeforeRedirect", "onBeforeRequest-2",
 755          "onResponseStarted", "onCompleted"]
 756       ],
 757       {urls: ["<all_urls>"]},  // filter
 758       ["blocking"]);
 759     navigateAndWait(getURLHttpSimpleLoad());
 760   },
 761
 762   // Checks that synchronous XHR requests from ourself are invisible to blocking
 763   // handlers.
 764   function syncXhrsFromOurselfAreInvisible() {
 765     expect(
 766       [  // events
 767         { label: "a-onBeforeRequest",
 768           event: "onBeforeRequest",
 769           details: {
 770             url: getURL("simpleLoad/a.html"),
 771             frameUrl: getURL("simpleLoad/a.html")
 772           }
 773         },
 774         { label: "a-onResponseStarted",
 775           event: "onResponseStarted",
 776           details: {
 777             url: getURL("simpleLoad/a.html"),
 778             statusCode: 200,
 779             fromCache: false,
 780             statusLine: "HTTP/1.1 200 OK",
 781             // Request to chrome-extension:// url has no IP.
 782           }
 783         },
 784         { label: "a-onCompleted",
 785           event: "onCompleted",
 786           details: {
 787             url: getURL("simpleLoad/a.html"),
 788             statusCode: 200,
 789             fromCache: false,
 790             statusLine: "HTTP/1.1 200 OK",
 791             // Request to chrome-extension:// url has no IP.
 792           }
 793         },
 794         // We do not see onBeforeRequest for the XHR request here because it is
 795         // handled by a blocking handler.
 796         { label: "x-onSendHeaders",
 797           event: "onSendHeaders",
 798           details: {
 799             url: getURLHttpXHRData(),
 800             tabId: 1,
 801             type: "xmlhttprequest",
 802           }
 803         },
 804         { label: "x-onResponseStarted",
 805           event: "onResponseStarted",
 806           details: {
 807             url: getURLHttpXHRData(),
 808             statusCode: 200,
 809             fromCache: false,
 810             statusLine: "HTTP/1.1 200 OK",
 811             tabId: 1,
 812             type: "xmlhttprequest",
 813             ip: "127.0.0.1",
 814             // Request to chrome-extension:// url has no IP.
 815           }
 816         },
 817         { label: "x-onCompleted",
 818           event: "onCompleted",
 819           details: {
 820             url: getURLHttpXHRData(),
 821             statusCode: 200,
 822             fromCache: false,
 823             statusLine: "HTTP/1.1 200 OK",
 824             tabId: 1,
 825             type: "xmlhttprequest",
 826             ip: "127.0.0.1",
 827             // Request to chrome-extension:// url has no IP.
 828           }
 829         },
 830         { label: "b-onBeforeRequest",
 831           event: "onBeforeRequest",
 832           details: {
 833             url: getURL("complexLoad/b.jpg"),
 834             frameUrl: getURL("complexLoad/b.jpg")
 835           }
 836         },
 837         { label: "b-onResponseStarted",
 838           event: "onResponseStarted",
 839           details: {
 840             url: getURL("complexLoad/b.jpg"),
 841             statusCode: 200,
 842             fromCache: false,
 843             statusLine: "HTTP/1.1 200 OK",
 844             // Request to chrome-extension:// url has no IP.
 845           }
 846         },
 847         { label: "b-onCompleted",
 848           event: "onCompleted",
 849           details: {
 850             url: getURL("complexLoad/b.jpg"),
 851             statusCode: 200,
 852             fromCache: false,
 853             statusLine: "HTTP/1.1 200 OK",
 854             // Request to chrome-extension:// url has no IP.
 855           }
 856         },
 857       ],
 858       [  // event order
 859         ["a-onBeforeRequest", "a-onResponseStarted", "a-onCompleted",
 860          "x-onSendHeaders", "x-onResponseStarted", "x-onCompleted",
 861          "b-onBeforeRequest", "b-onResponseStarted", "b-onCompleted"]
 862       ],
 863       {urls: ["<all_urls>"]}, ["blocking"]);
 864     // Check the page content for our modified User-Agent string.
 865     navigateAndWait(getURL("simpleLoad/a.html"), function() {
 866         var req = new XMLHttpRequest();
 867         var asynchronous = false;
 868         req.open("GET", getURLHttpXHRData(), asynchronous);
 869         req.send(null);
 870         navigateAndWait(getURL("complexLoad/b.jpg"));
 871     });
 872   },
 873
 874   // Checks that asynchronous XHR requests from ourself are visible to blocking
 875   // handlers.
 876   function asyncXhrsFromOurselfAreVisible() {
 877     expect(
 878       [  // events
 879         { label: "a-onBeforeRequest",
 880           event: "onBeforeRequest",
 881           details: {
 882             url: getURL("simpleLoad/a.html"),
 883             frameUrl: getURL("simpleLoad/a.html")
 884           }
 885         },
 886         { label: "a-onResponseStarted",
 887           event: "onResponseStarted",
 888           details: {
 889             url: getURL("simpleLoad/a.html"),
 890             statusCode: 200,
 891             fromCache: false,
 892             statusLine: "HTTP/1.1 200 OK",
 893             // Request to chrome-extension:// url has no IP.
 894           }
 895         },
 896         { label: "a-onCompleted",
 897           event: "onCompleted",
 898           details: {
 899             url: getURL("simpleLoad/a.html"),
 900             statusCode: 200,
 901             fromCache: false,
 902             statusLine: "HTTP/1.1 200 OK",
 903             // Request to chrome-extension:// url has no IP.
 904           }
 905         },
 906         {
 907           label: "x-onBeforeRequest",
 908           event: "onBeforeRequest",
 909           details: {
 910             url: getURLHttpXHRData(),
 911             tabId: 1,
 912             type: "xmlhttprequest",
 913             frameUrl: "unknown frame URL",
 914           }
 915         },
 916         {
 917           label: "x-onBeforeSendHeaders",
 918           event: "onBeforeSendHeaders",
 919           details: {
 920             url: getURLHttpXHRData(),
 921             tabId: 1,
 922             type: "xmlhttprequest",
 923           }
 924         },
 925         { label: "x-onSendHeaders",
 926           event: "onSendHeaders",
 927           details: {
 928             url: getURLHttpXHRData(),
 929             tabId: 1,
 930             type: "xmlhttprequest",
 931           }
 932         },
 933         { label: "x-onResponseStarted",
 934           event: "onResponseStarted",
 935           details: {
 936             url: getURLHttpXHRData(),
 937             statusCode: 200,
 938             fromCache: false,
 939             statusLine: "HTTP/1.1 200 OK",
 940             tabId: 1,
 941             type: "xmlhttprequest",
 942             ip: "127.0.0.1",
 943             // Request to chrome-extension:// url has no IP.
 944           }
 945         },
 946         {
 947           label: "x-onHeadersReceived",
 948           event: "onHeadersReceived",
 949           details: {
 950             url: getURLHttpXHRData(),
 951             tabId: 1,
 952             type: "xmlhttprequest",
 953             statusLine: "HTTP/1.1 200 OK",
 954             statusCode: 200,
 955           }
 956         },
 957         { label: "x-onCompleted",
 958           event: "onCompleted",
 959           details: {
 960             url: getURLHttpXHRData(),
 961             statusCode: 200,
 962             fromCache: false,
 963             statusLine: "HTTP/1.1 200 OK",
 964             tabId: 1,
 965             type: "xmlhttprequest",
 966             ip: "127.0.0.1",
 967             // Request to chrome-extension:// url has no IP.
 968           }
 969         },
 970         { label: "b-onBeforeRequest",
 971           event: "onBeforeRequest",
 972           details: {
 973             url: getURL("complexLoad/b.jpg"),
 974             frameUrl: getURL("complexLoad/b.jpg")
 975           }
 976         },
 977         { label: "b-onResponseStarted",
 978           event: "onResponseStarted",
 979           details: {
 980             url: getURL("complexLoad/b.jpg"),
 981             statusCode: 200,
 982             fromCache: false,
 983             statusLine: "HTTP/1.1 200 OK",
 984             // Request to chrome-extension:// url has no IP.
 985           }
 986         },
 987         { label: "b-onCompleted",
 988           event: "onCompleted",
 989           details: {
 990             url: getURL("complexLoad/b.jpg"),
 991             statusCode: 200,
 992             fromCache: false,
 993             statusLine: "HTTP/1.1 200 OK",
 994             // Request to chrome-extension:// url has no IP.
 995           }
 996         },
 997       ],
 998       [  // event order
 999         ["a-onBeforeRequest", "a-onResponseStarted", "a-onCompleted",
1000          "x-onBeforeRequest", "x-onBeforeSendHeaders", "x-onSendHeaders",
1001          "x-onHeadersReceived", "x-onResponseStarted", "x-onCompleted"],
1002         ["a-onCompleted", "x-onBeforeRequest",
1003          "b-onBeforeRequest", "b-onResponseStarted", "b-onCompleted"]
1004       ],
1005       {urls: ["<all_urls>"]}, ["blocking"]);
1006     // Check the page content for our modified User-Agent string.
1007     navigateAndWait(getURL("simpleLoad/a.html"), function() {
1008         var req = new XMLHttpRequest();
1009         var asynchronous = true;
1010         req.open("GET", getURLHttpXHRData(), asynchronous);
1011         req.send(null);
1012         navigateAndWait(getURL("complexLoad/b.jpg"));
1013     });
1014   },
1015 ]);
1016
1017
1018 // This helper verifies that extensions can successfully redirect resources even
1019 // if cross-origin access control is in effect via the crossorigin attribute.
1020 // Used by crossOriginAnonymousRedirect and crossOriginCredentialedRedirect.
1021 function testLoadCORSImage(crossOriginAttributeValue) {
1022   // (Non-existent) image URL, with random query string to bust the cache.
1023   var requestedUrl = getServerURL("cors/intercepted_by_extension.gif?" +
1024                                   Math.random(), "original.tld");
1025   var frameUrl = getServerURL(
1026       "extensions/api_test/webrequest/cors/load_image.html?" +
1027       "crossOrigin=" + crossOriginAttributeValue +
1028       "&src=" + encodeURIComponent(requestedUrl));
1029   var redirectTarget = getServerURL(
1030       "extensions/api_test/webrequest/cors/redirect_target.gif", "domain.tld");
1031   expect(
1032     [  // events
1033       { label: "onBeforeRequest-1",
1034         event: "onBeforeRequest",
1035         details: {
1036           type: "image",
1037           url: requestedUrl,
1038           // Frame URL unavailable because requests are filtered by type=image.
1039           frameUrl: "unknown frame URL",
1040         },
1041         retval: {redirectUrl: redirectTarget}
1042       },
1043       { label: "onBeforeRedirect",
1044         event: "onBeforeRedirect",
1045         details: {
1046           type: "image",
1047           url: requestedUrl,
1048           redirectUrl: redirectTarget,
1049           statusLine: "HTTP/1.1 307 Internal Redirect",
1050           statusCode: 307,
1051           fromCache: false,
1052         }
1053       },
1054       { label: "onBeforeRequest-2",
1055         event: "onBeforeRequest",
1056         details: {
1057           type: "image",
1058           url: redirectTarget,
1059           // Frame URL unavailable because requests are filtered by type=image.
1060           frameUrl: "unknown frame URL",
1061         },
1062       },
1063       {
1064         label: "onBeforeSendHeaders",
1065         event: "onBeforeSendHeaders",
1066         details: {
1067           type: "image",
1068           url: redirectTarget,
1069         }
1070       },
1071       {
1072         label: "onSendHeaders",
1073         event: "onSendHeaders",
1074         details: {
1075           type: "image",
1076           url: redirectTarget,
1077         }
1078       },
1079       {
1080         label: "onHeadersReceived",
1081         event: "onHeadersReceived",
1082         details: {
1083           type: "image",
1084           url: redirectTarget,
1085           statusLine: "HTTP/1.1 200 OK",
1086           statusCode: 200,
1087         }
1088       },
1089       { label: "onResponseStarted",
1090         event: "onResponseStarted",
1091         details: {
1092           type: "image",
1093           url: redirectTarget,
1094           fromCache: false,
1095           statusCode: 200,
1096           ip: "127.0.0.1",
1097           statusLine: "HTTP/1.1 200 OK",
1098         }
1099       },
1100       { label: "onCompleted",
1101         event: "onCompleted",
1102         details: {
1103           type: "image",
1104           url: redirectTarget,
1105           fromCache: false,
1106           statusCode: 200,
1107           ip: "127.0.0.1",
1108           statusLine: "HTTP/1.1 200 OK",
1109         }
1110       },
1111       // After the image loads, the test will load the following URL
1112       // to signal that the test succeeded.
1113       {
1114         label: "onBeforeRequest-3",
1115         event: "onBeforeRequest",
1116         details: {
1117           type: "image",
1118           url: getServerURL("signal_that_image_loaded_successfully"),
1119           // Frame URL unavailable because requests are filtered by type=image.
1120           frameUrl: "unknown frame URL",
1121         },
1122         retval: {cancel: true}
1123       },
1124       { label: "onErrorOccurred",
1125         event: "onErrorOccurred",
1126         details: {
1127           type: "image",
1128           url: getServerURL("signal_that_image_loaded_successfully"),
1129           fromCache: false,
1130           error: "net::ERR_BLOCKED_BY_CLIENT",
1131         }
1132       },
1133     ],
1134     [  // event order
1135       ["onBeforeRequest-1", "onBeforeRedirect", "onBeforeRequest-2",
1136        "onBeforeSendHeaders", "onSendHeaders", "onHeadersReceived",
1137        "onResponseStarted", "onCompleted",
1138        "onBeforeRequest-3", "onErrorOccurred"],
1139     ],
1140     {urls: ["<all_urls>"], types: ['image']}, // filter
1141     ["blocking"]);
1142   navigateAndWait(frameUrl);
1143 }