Source/WebKit/win/WebDownloadCFNet.cpp

   1 /*
   2  * Copyright (C) 2007 Apple Inc.  All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
  14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
  17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24  */
  25
  26 #include "config.h"
  27 #include "WebKitDLL.h"
  28 #include "WebDownload.h"
  29
  30 #include "DefaultDownloadDelegate.h"
  31 #include "MarshallingHelpers.h"
  32 #include "WebError.h"
  33 #include "WebKit.h"
  34 #include "WebKitLogging.h"
  35 #include "WebMutableURLRequest.h"
  36 #include "WebURLAuthenticationChallenge.h"
  37 #include "WebURLCredential.h"
  38 #include "WebURLResponse.h"
  39
  40 #include <wtf/platform.h>
  41 #include <wtf/text/CString.h>
  42
  43 #include <io.h>
  44 #include <sys/stat.h>
  45 #include <sys/types.h>
  46
  47 #include <WebCore/AuthenticationCF.h>
  48 #include <WebCore/BString.h>
  49 #include <WebCore/CredentialStorage.h>
  50 #include <WebCore/DownloadBundle.h>
  51 #include <WebCore/LoaderRunLoopCF.h>
  52 #include <WebCore/ResourceError.h>
  53 #include <WebCore/ResourceHandle.h>
  54 #include <WebCore/ResourceRequest.h>
  55 #include <WebCore/ResourceResponse.h>
  56 #include <wtf/CurrentTime.h>
  57
  58 using namespace WebCore;
  59
  60 // CFURLDownload Callbacks ----------------------------------------------------------------
  61 static void didStartCallback(CFURLDownloadRef download, const void *clientInfo);
  62 static CFURLRequestRef willSendRequestCallback(CFURLDownloadRef download, CFURLRequestRef request, CFURLResponseRef redirectionResponse, const void *clientInfo);
  63 static void didReceiveAuthenticationChallengeCallback(CFURLDownloadRef download, CFURLAuthChallengeRef challenge, const void *clientInfo);
  64 static void didReceiveResponseCallback(CFURLDownloadRef download, CFURLResponseRef response, const void *clientInfo);
  65 static void willResumeWithResponseCallback(CFURLDownloadRef download, CFURLResponseRef response, UInt64 startingByte, const void *clientInfo);
  66 static void didReceiveDataCallback(CFURLDownloadRef download, CFIndex length, const void *clientInfo);
  67 static Boolean shouldDecodeDataOfMIMETypeCallback(CFURLDownloadRef download, CFStringRef encodingType, const void *clientInfo);
  68 static void decideDestinationWithSuggestedObjectNameCallback(CFURLDownloadRef download, CFStringRef objectName, const void *clientInfo);
  69 static void didCreateDestinationCallback(CFURLDownloadRef download, CFURLRef path, const void *clientInfo);
  70 static void didFinishCallback(CFURLDownloadRef download, const void *clientInfo);
  71 static void didFailCallback(CFURLDownloadRef download, CFErrorRef error, const void *clientInfo);
  72
  73 void WebDownload::init(ResourceHandle* handle, const ResourceRequest& request, const ResourceResponse& response, IWebDownloadDelegate* delegate)
  74 {
  75     m_delegate = delegate ? delegate : DefaultDownloadDelegate::sharedInstance();
  76     CFURLConnectionRef connection = handle->connection();
  77     if (!connection) {
  78         LOG_ERROR("WebDownload::WebDownload(ResourceHandle*,...) called with an inactive ResourceHandle");
  79         return;
  80     }
  81
  82     CFURLDownloadClient client = {0, this, 0, 0, 0, didStartCallback, willSendRequestCallback, didReceiveAuthenticationChallengeCallback,
  83         didReceiveResponseCallback, willResumeWithResponseCallback, didReceiveDataCallback, shouldDecodeDataOfMIMETypeCallback,
  84         decideDestinationWithSuggestedObjectNameCallback, didCreateDestinationCallback, didFinishCallback, didFailCallback};
  85
  86     m_request.adoptRef(WebMutableURLRequest::createInstance(request));
  87     m_download.adoptCF(CFURLDownloadCreateAndStartWithLoadingConnection(0, connection, request.cfURLRequest(), response.cfURLResponse(), &client));
  88
  89     // It is possible for CFURLDownloadCreateAndStartWithLoadingConnection() to fail if the passed in CFURLConnection is not in a "downloadable state"
  90     // However, we should never hit that case
  91     if (!m_download) {
  92         ASSERT_NOT_REACHED();
  93         LOG_ERROR("WebDownload - Failed to create WebDownload from existing connection (%s)", request.url().string().utf8().data());
  94     } else
  95         LOG(Download, "WebDownload - Created WebDownload %p from existing connection (%s)", this, request.url().string().utf8().data());
  96
  97     // The CFURLDownload either starts successfully and retains the CFURLConnection,
  98     // or it fails to creating and we have a now-useless connection with a dangling ref.
  99     // Either way, we need to release the connection to balance out ref counts
 100     handle->releaseConnectionForDownload();
 101     CFRelease(connection);
 102 }
 103
 104 void WebDownload::init(const KURL& url, IWebDownloadDelegate* delegate)
 105 {
 106     m_delegate = delegate ? delegate : DefaultDownloadDelegate::sharedInstance();
 107     LOG_ERROR("Delegate is %p", m_delegate.get());
 108
 109     ResourceRequest request(url);
 110     CFURLRequestRef cfRequest = request.cfURLRequest();
 111
 112     CFURLDownloadClient client = {0, this, 0, 0, 0, didStartCallback, willSendRequestCallback, didReceiveAuthenticationChallengeCallback,
 113                                   didReceiveResponseCallback, willResumeWithResponseCallback, didReceiveDataCallback, shouldDecodeDataOfMIMETypeCallback,
 114                                   decideDestinationWithSuggestedObjectNameCallback, didCreateDestinationCallback, didFinishCallback, didFailCallback};
 115     m_request.adoptRef(WebMutableURLRequest::createInstance(request));
 116     m_download.adoptCF(CFURLDownloadCreate(0, cfRequest, &client));
 117
 118     CFURLDownloadScheduleWithCurrentMessageQueue(m_download.get());
 119     CFURLDownloadScheduleDownloadWithRunLoop(m_download.get(), loaderRunLoop(), kCFRunLoopDefaultMode);
 120
 121     LOG(Download, "WebDownload - Initialized download of url %s in WebDownload %p", url.string().utf8().data(), this);
 122 }
 123
 124 // IWebDownload -------------------------------------------------------------------
 125
 126 HRESULT STDMETHODCALLTYPE WebDownload::initWithRequest(
 127         /* [in] */ IWebURLRequest* request,
 128         /* [in] */ IWebDownloadDelegate* delegate)
 129 {
 130     COMPtr<WebMutableURLRequest> webRequest;
 131     if (!request || FAILED(request->QueryInterface(&webRequest))) {
 132         LOG(Download, "WebDownload - initWithRequest failed - not a WebMutableURLRequest");
 133         return E_FAIL;
 134     }
 135
 136     if (!delegate)
 137         return E_FAIL;
 138     m_delegate = delegate;
 139     LOG(Download, "Delegate is %p", m_delegate.get());
 140
 141     RetainPtr<CFURLRequestRef> cfRequest = webRequest->resourceRequest().cfURLRequest();
 142
 143     CFURLDownloadClient client = {0, this, 0, 0, 0, didStartCallback, willSendRequestCallback, didReceiveAuthenticationChallengeCallback,
 144                                   didReceiveResponseCallback, willResumeWithResponseCallback, didReceiveDataCallback, shouldDecodeDataOfMIMETypeCallback,
 145                                   decideDestinationWithSuggestedObjectNameCallback, didCreateDestinationCallback, didFinishCallback, didFailCallback};
 146     m_request.adoptRef(WebMutableURLRequest::createInstance(webRequest.get()));
 147     m_download.adoptCF(CFURLDownloadCreate(0, cfRequest.get(), &client));
 148
 149     // If for some reason the download failed to create,
 150     // we have particular cleanup to do
 151     if (!m_download) {
 152         m_request = 0;
 153         return E_FAIL;
 154     }
 155
 156     CFURLDownloadScheduleWithCurrentMessageQueue(m_download.get());
 157     CFURLDownloadScheduleDownloadWithRunLoop(m_download.get(), loaderRunLoop(), kCFRunLoopDefaultMode);
 158
 159     LOG(Download, "WebDownload - initWithRequest complete, started download of url %s", webRequest->resourceRequest().url().string().utf8().data());
 160     return S_OK;
 161 }
 162
 163 HRESULT STDMETHODCALLTYPE WebDownload::initToResumeWithBundle(
 164         /* [in] */ BSTR bundlePath,
 165         /* [in] */ IWebDownloadDelegate* delegate)
 166 {
 167     LOG(Download, "Attempting resume of download bundle %s", String(bundlePath, SysStringLen(bundlePath)).ascii().data());
 168
 169     RetainPtr<CFDataRef> resumeData(AdoptCF, DownloadBundle::extractResumeData(String(bundlePath, SysStringLen(bundlePath))));
 170
 171     if (!resumeData)
 172         return E_FAIL;
 173
 174     if (!delegate)
 175         return E_FAIL;
 176     m_delegate = delegate;
 177     LOG(Download, "Delegate is %p", m_delegate.get());
 178
 179     CFURLDownloadClient client = {0, this, 0, 0, 0, didStartCallback, willSendRequestCallback, didReceiveAuthenticationChallengeCallback,
 180                                   didReceiveResponseCallback, willResumeWithResponseCallback, didReceiveDataCallback, shouldDecodeDataOfMIMETypeCallback,
 181                                   decideDestinationWithSuggestedObjectNameCallback, didCreateDestinationCallback, didFinishCallback, didFailCallback};
 182
 183     RetainPtr<CFURLRef> pathURL(AdoptCF, MarshallingHelpers::PathStringToFileCFURLRef(String(bundlePath, SysStringLen(bundlePath))));
 184     ASSERT(pathURL);
 185
 186     m_download.adoptCF(CFURLDownloadCreateWithResumeData(0, resumeData.get(), pathURL.get(), &client));
 187
 188     if (!m_download) {
 189         LOG(Download, "Failed to create CFURLDownloadRef for resume");
 190         return E_FAIL;
 191     }
 192
 193     m_bundlePath = String(bundlePath, SysStringLen(bundlePath));
 194     // Attempt to remove the ".download" extension from the bundle for the final file destination
 195     // Failing that, we clear m_destination and will ask the delegate later once the download starts
 196     if (m_bundlePath.endsWith(DownloadBundle::fileExtension(), false)) {
 197         m_destination = m_bundlePath.isolatedCopy();
 198         m_destination.truncate(m_destination.length() - DownloadBundle::fileExtension().length());
 199     } else
 200         m_destination = String();
 201
 202     CFURLDownloadScheduleWithCurrentMessageQueue(m_download.get());
 203     CFURLDownloadScheduleDownloadWithRunLoop(m_download.get(), loaderRunLoop(), kCFRunLoopDefaultMode);
 204
 205     LOG(Download, "WebDownload - initWithRequest complete, resumed download of bundle %s", String(bundlePath, SysStringLen(bundlePath)).ascii().data());
 206     return S_OK;
 207 }
 208
 209 HRESULT STDMETHODCALLTYPE WebDownload::start()
 210 {
 211     LOG(Download, "WebDownload - Starting download (%p)", this);
 212     if (!m_download)
 213         return E_FAIL;
 214
 215     CFURLDownloadStart(m_download.get());
 216     // FIXME: 4950477 - CFURLDownload neglects to make the didStart() client call upon starting the download.
 217     // This is a somewhat critical call, so we'll fake it for now!
 218     didStart();
 219
 220     return S_OK;
 221 }
 222
 223 HRESULT STDMETHODCALLTYPE WebDownload::cancel()
 224 {
 225     LOG(Download, "WebDownload - Cancelling download (%p)", this);
 226     if (!m_download)
 227         return E_FAIL;
 228
 229     CFURLDownloadCancel(m_download.get());
 230     m_download = 0;
 231     return S_OK;
 232 }
 233
 234 HRESULT STDMETHODCALLTYPE WebDownload::cancelForResume()
 235 {
 236     LOG(Download, "WebDownload - Cancelling download (%p), writing resume information to file if possible", this);
 237     ASSERT(m_download);
 238     if (!m_download)
 239         return E_FAIL;
 240
 241     HRESULT hr = S_OK;
 242     RetainPtr<CFDataRef> resumeData;
 243     if (m_destination.isEmpty()) {
 244         CFURLDownloadCancel(m_download.get());
 245         goto exit;
 246     }
 247
 248     CFURLDownloadSetDeletesUponFailure(m_download.get(), false);
 249     CFURLDownloadCancel(m_download.get());
 250
 251     resumeData.adoptCF(CFURLDownloadCopyResumeData(m_download.get()));
 252     if (!resumeData) {
 253         LOG(Download, "WebDownload - Unable to create resume data for download (%p)", this);
 254         goto exit;
 255     }
 256
 257     DownloadBundle::appendResumeData(resumeData.get(), m_bundlePath);
 258
 259 exit:
 260     m_download = 0;
 261     return hr;
 262 }
 263
 264 HRESULT STDMETHODCALLTYPE WebDownload::deletesFileUponFailure(
 265         /* [out, retval] */ BOOL* result)
 266 {
 267     if (!m_download)
 268         return E_FAIL;
 269     *result = CFURLDownloadDeletesUponFailure(m_download.get());
 270     return S_OK;
 271 }
 272
 273 HRESULT STDMETHODCALLTYPE WebDownload::setDeletesFileUponFailure(
 274         /* [in] */ BOOL deletesFileUponFailure)
 275 {
 276     if (!m_download)
 277         return E_FAIL;
 278     CFURLDownloadSetDeletesUponFailure(m_download.get(), !!deletesFileUponFailure);
 279     return S_OK;
 280 }
 281
 282 HRESULT STDMETHODCALLTYPE WebDownload::setDestination(
 283         /* [in] */ BSTR path,
 284         /* [in] */ BOOL allowOverwrite)
 285 {
 286     if (!m_download)
 287         return E_FAIL;
 288
 289     m_destination = String(path, SysStringLen(path));
 290     m_bundlePath = m_destination + DownloadBundle::fileExtension();
 291
 292     CFURLRef pathURL = MarshallingHelpers::PathStringToFileCFURLRef(m_bundlePath);
 293     CFURLDownloadSetDestination(m_download.get(), pathURL, !!allowOverwrite);
 294     CFRelease(pathURL);
 295
 296     LOG(Download, "WebDownload - Set destination to %s", m_bundlePath.ascii().data());
 297
 298     return S_OK;
 299 }
 300
 301 // IWebURLAuthenticationChallengeSender -------------------------------------------------------------------
 302
 303 HRESULT STDMETHODCALLTYPE WebDownload::cancelAuthenticationChallenge(
 304         /* [in] */ IWebURLAuthenticationChallenge*)
 305 {
 306     if (m_download) {
 307         CFURLDownloadCancel(m_download.get());
 308         m_download = 0;
 309     }
 310
 311     // FIXME: Do we need a URL or description for this error code?
 312     ResourceError error(String(WebURLErrorDomain), WebURLErrorUserCancelledAuthentication, "", "");
 313     COMPtr<WebError> webError(AdoptCOM, WebError::createInstance(error));
 314     m_delegate->didFailWithError(this, webError.get());
 315
 316     return S_OK;
 317 }
 318
 319 HRESULT STDMETHODCALLTYPE WebDownload::continueWithoutCredentialForAuthenticationChallenge(
 320         /* [in] */ IWebURLAuthenticationChallenge* challenge)
 321 {
 322     COMPtr<WebURLAuthenticationChallenge> webChallenge(Query, challenge);
 323     if (!webChallenge)
 324         return E_NOINTERFACE;
 325
 326     if (m_download)
 327         CFURLDownloadUseCredential(m_download.get(), 0, webChallenge->authenticationChallenge().cfURLAuthChallengeRef());
 328     return S_OK;
 329 }
 330
 331 HRESULT STDMETHODCALLTYPE WebDownload::useCredential(
 332         /* [in] */ IWebURLCredential* credential,
 333         /* [in] */ IWebURLAuthenticationChallenge* challenge)
 334 {
 335     COMPtr<WebURLAuthenticationChallenge> webChallenge(Query, challenge);
 336     if (!webChallenge)
 337         return E_NOINTERFACE;
 338
 339     COMPtr<WebURLCredential> webCredential(Query, credential);
 340     if (!webCredential)
 341         return E_NOINTERFACE;
 342
 343     RetainPtr<CFURLCredentialRef> cfCredential(AdoptCF, createCF(webCredential->credential()));
 344
 345     if (m_download)
 346         CFURLDownloadUseCredential(m_download.get(), cfCredential.get(), webChallenge->authenticationChallenge().cfURLAuthChallengeRef());
 347     return S_OK;
 348 }
 349
 350 // CFURLDownload Callbacks -------------------------------------------------------------------
 351 void WebDownload::didStart()
 352 {
 353 #ifndef NDEBUG
 354     m_startTime = m_dataTime = currentTime();
 355     m_received = 0;
 356     LOG(Download, "DOWNLOAD - Started %p at %.3f seconds", this, m_startTime);
 357 #endif
 358     if (FAILED(m_delegate->didBegin(this)))
 359         LOG_ERROR("DownloadDelegate->didBegin failed");
 360 }
 361
 362 CFURLRequestRef WebDownload::willSendRequest(CFURLRequestRef request, CFURLResponseRef response)
 363 {
 364     COMPtr<WebMutableURLRequest> webRequest(AdoptCOM, WebMutableURLRequest::createInstance(ResourceRequest(request)));
 365     COMPtr<WebURLResponse> webResponse(AdoptCOM, WebURLResponse::createInstance(ResourceResponse(response)));
 366     COMPtr<IWebMutableURLRequest> finalRequest;
 367
 368     if (FAILED(m_delegate->willSendRequest(this, webRequest.get(), webResponse.get(), &finalRequest)))
 369         LOG_ERROR("DownloadDelegate->willSendRequest failed");
 370
 371     if (!finalRequest)
 372         return 0;
 373
 374     COMPtr<WebMutableURLRequest> finalWebRequest(AdoptCOM, WebMutableURLRequest::createInstance(finalRequest.get()));
 375     m_request = finalWebRequest.get();
 376     CFURLRequestRef result = finalWebRequest->resourceRequest().cfURLRequest();
 377     CFRetain(result);
 378     return result;
 379 }
 380
 381 void WebDownload::didReceiveAuthenticationChallenge(CFURLAuthChallengeRef challenge)
 382 {
 383     // Try previously stored credential first.
 384     if (!CFURLAuthChallengeGetPreviousFailureCount(challenge)) {
 385         Credential credential = CredentialStorage::get(core(CFURLAuthChallengeGetProtectionSpace(challenge)));
 386         if (!credential.isEmpty()) {
 387             RetainPtr<CFURLCredentialRef> cfCredential(AdoptCF, createCF(credential));
 388             CFURLDownloadUseCredential(m_download.get(), cfCredential.get(), challenge);
 389             return;
 390         }
 391     }
 392
 393     COMPtr<IWebURLAuthenticationChallenge> webChallenge(AdoptCOM,
 394         WebURLAuthenticationChallenge::createInstance(AuthenticationChallenge(challenge, 0), this));
 395
 396     if (SUCCEEDED(m_delegate->didReceiveAuthenticationChallenge(this, webChallenge.get())))
 397         return;
 398
 399     cancelAuthenticationChallenge(webChallenge.get());
 400 }
 401
 402 void WebDownload::didReceiveResponse(CFURLResponseRef response)
 403 {
 404     COMPtr<WebURLResponse> webResponse(AdoptCOM, WebURLResponse::createInstance(ResourceResponse(response)));
 405     if (FAILED(m_delegate->didReceiveResponse(this, webResponse.get())))
 406         LOG_ERROR("DownloadDelegate->didReceiveResponse failed");
 407 }
 408
 409 void WebDownload::willResumeWithResponse(CFURLResponseRef response, UInt64 fromByte)
 410 {
 411     COMPtr<WebURLResponse> webResponse(AdoptCOM, WebURLResponse::createInstance(ResourceResponse(response)));
 412     if (FAILED(m_delegate->willResumeWithResponse(this, webResponse.get(), fromByte)))
 413         LOG_ERROR("DownloadDelegate->willResumeWithResponse failed");
 414 }
 415
 416 void WebDownload::didReceiveData(CFIndex length)
 417 {
 418 #ifndef NDEBUG
 419     m_received += length;
 420     double current = currentTime();
 421     if (current - m_dataTime > 2.0)
 422         LOG(Download, "DOWNLOAD - %p hanged for %.3f seconds - Received %i bytes for a total of %i", this, current - m_dataTime, length, m_received);
 423     m_dataTime = current;
 424 #endif
 425     if (FAILED(m_delegate->didReceiveDataOfLength(this, length)))
 426         LOG_ERROR("DownloadDelegate->didReceiveData failed");
 427 }
 428
 429 bool WebDownload::shouldDecodeDataOfMIMEType(CFStringRef mimeType)
 430 {
 431     BOOL result;
 432     if (FAILED(m_delegate->shouldDecodeSourceDataOfMIMEType(this, BString(mimeType), &result))) {
 433         LOG_ERROR("DownloadDelegate->shouldDecodeSourceDataOfMIMEType failed");
 434         return false;
 435     }
 436     return !!result;
 437 }
 438
 439 void WebDownload::decideDestinationWithSuggestedObjectName(CFStringRef name)
 440 {
 441     if (FAILED(m_delegate->decideDestinationWithSuggestedFilename(this, BString(name))))
 442         LOG_ERROR("DownloadDelegate->decideDestinationWithSuggestedObjectName failed");
 443 }
 444
 445 void WebDownload::didCreateDestination(CFURLRef destination)
 446 {
 447     // The concept of the ".download bundle" is internal to the WebDownload, so therefore
 448     // we try to mask the delegate from its existence as much as possible by telling it the final
 449     // destination was created, when in reality the bundle was created
 450
 451     String createdDestination = MarshallingHelpers::FileCFURLRefToPathString(destination);
 452
 453     // At this point in receiving CFURLDownload callbacks, we should definitely have the bundle path stored locally
 454     // and it should match with the file that CFURLDownload created
 455     ASSERT(createdDestination == m_bundlePath);
 456     // And we should also always have the final-destination stored
 457     ASSERT(!m_destination.isEmpty());
 458
 459     BString path(m_destination);
 460     if (FAILED(m_delegate->didCreateDestination(this, path)))
 461         LOG_ERROR("DownloadDelegate->didCreateDestination failed");
 462 }
 463
 464 void WebDownload::didFinish()
 465 {
 466 #ifndef NDEBUG
 467     LOG(Download, "DOWNLOAD - Finished %p after %i bytes and %.3f seconds", this, m_received, currentTime() - m_startTime);
 468 #endif
 469
 470     ASSERT(!m_bundlePath.isEmpty() && !m_destination.isEmpty());
 471     LOG(Download, "WebDownload - Moving file from bundle %s to destination %s", m_bundlePath.ascii().data(), m_destination.ascii().data());
 472
 473     // We try to rename the bundle to the final file name.  If that fails, we give the delegate one more chance to chose
 474     // the final file name, then we just leave it
 475     if (!MoveFileEx(m_bundlePath.charactersWithNullTermination(), m_destination.charactersWithNullTermination(), 0)) {
 476         LOG_ERROR("Failed to move bundle %s to %s on completion\nError - %i", m_bundlePath.ascii().data(), m_destination.ascii().data(), GetLastError());
 477
 478         bool reportBundlePathAsFinalPath = true;
 479
 480         BString destinationBSTR(m_destination.characters(), m_destination.length());
 481         if (FAILED(m_delegate->decideDestinationWithSuggestedFilename(this, destinationBSTR)))
 482             LOG_ERROR("delegate->decideDestinationWithSuggestedFilename() failed");
 483
 484         // The call to m_delegate->decideDestinationWithSuggestedFilename() should have changed our destination, so we'll try the move
 485         // one last time.
 486         if (!m_destination.isEmpty())
 487             if (MoveFileEx(m_bundlePath.charactersWithNullTermination(), m_destination.charactersWithNullTermination(), 0))
 488                 reportBundlePathAsFinalPath = false;
 489
 490         // We either need to tell the delegate our final filename is the bundle filename, or is the file name they just told us to use
 491         if (reportBundlePathAsFinalPath) {
 492             BString bundleBSTR(m_bundlePath);
 493             m_delegate->didCreateDestination(this, bundleBSTR);
 494         } else {
 495             BString finalDestinationBSTR = BString(m_destination);
 496             m_delegate->didCreateDestination(this, finalDestinationBSTR);
 497         }
 498     }
 499
 500     // It's extremely likely the call to delegate->didFinish() will deref this, so lets not let that cause our destruction just yet
 501     COMPtr<WebDownload> protect = this;
 502     if (FAILED(m_delegate->didFinish(this)))
 503         LOG_ERROR("DownloadDelegate->didFinish failed");
 504
 505     m_download = 0;
 506 }
 507
 508 void WebDownload::didFail(CFErrorRef error)
 509 {
 510     COMPtr<WebError> webError(AdoptCOM, WebError::createInstance(ResourceError(error)));
 511     if (FAILED(m_delegate->didFailWithError(this, webError.get())))
 512         LOG_ERROR("DownloadDelegate->didFailWithError failed");
 513 }
 514
 515 // CFURLDownload Callbacks ----------------------------------------------------------------
 516 void didStartCallback(CFURLDownloadRef, const void *clientInfo)
 517 { ((WebDownload*)clientInfo)->didStart(); }
 518
 519 CFURLRequestRef willSendRequestCallback(CFURLDownloadRef, CFURLRequestRef request, CFURLResponseRef redirectionResponse, const void *clientInfo)
 520 { return ((WebDownload*)clientInfo)->willSendRequest(request, redirectionResponse); }
 521
 522 void didReceiveAuthenticationChallengeCallback(CFURLDownloadRef, CFURLAuthChallengeRef challenge, const void *clientInfo)
 523 { ((WebDownload*)clientInfo)->didReceiveAuthenticationChallenge(challenge); }
 524
 525 void didReceiveResponseCallback(CFURLDownloadRef, CFURLResponseRef response, const void *clientInfo)
 526 { ((WebDownload*)clientInfo)->didReceiveResponse(response); }
 527
 528 void willResumeWithResponseCallback(CFURLDownloadRef, CFURLResponseRef response, UInt64 startingByte, const void *clientInfo)
 529 { ((WebDownload*)clientInfo)->willResumeWithResponse(response, startingByte); }
 530
 531 void didReceiveDataCallback(CFURLDownloadRef, CFIndex length, const void *clientInfo)
 532 { ((WebDownload*)clientInfo)->didReceiveData(length); }
 533
 534 Boolean shouldDecodeDataOfMIMETypeCallback(CFURLDownloadRef, CFStringRef encodingType, const void *clientInfo)
 535 { return ((WebDownload*)clientInfo)->shouldDecodeDataOfMIMEType(encodingType); }
 536
 537 void decideDestinationWithSuggestedObjectNameCallback(CFURLDownloadRef, CFStringRef objectName, const void *clientInfo)
 538 { ((WebDownload*)clientInfo)->decideDestinationWithSuggestedObjectName(objectName); }
 539
 540 void didCreateDestinationCallback(CFURLDownloadRef, CFURLRef path, const void *clientInfo)
 541 { ((WebDownload*)clientInfo)->didCreateDestination(path); }
 542
 543 void didFinishCallback(CFURLDownloadRef, const void *clientInfo)
 544 { ((WebDownload*)clientInfo)->didFinish(); }
 545
 546 void didFailCallback(CFURLDownloadRef, CFErrorRef error, const void *clientInfo)
 547 { ((WebDownload*)clientInfo)->didFail(error); }