https://bugs.webkit.org/show_bug.cgi?id=118849

Patch by peavo@outlook.com <peavo@outlook.com> on 2013-07-19
Reviewed by Brent Fulgham.

The current Curl implementation does not handle a 401 response.
When receiving http code 401, we need to give a notification that authorization is required, by calling the appropriate notification method.
This gives a WebKit client the possibility to present a password dialog to the user.
In response to this, we should provide Curl with the given username and password, so another request can be sent with the given credentials.

Source/WebCore:

* platform/network/ResourceHandle.h:
    Added method to check if credential storage should be used.
* platform/network/ResourceHandleInternal.h:
    Added member to keep track of number of authentication failures.
(WebCore::ResourceHandleInternal::ResourceHandleInternal):
* platform/network/curl/ResourceHandleCurl.cpp:
(WebCore::ResourceHandle::shouldUseCredentialStorage):
    Added method to check if credential storage should be used.
(WebCore::ResourceHandle::didReceiveAuthenticationChallenge):
    Implement method; notify client when authentication is required.
(WebCore::ResourceHandle::receivedCredential):
    Implement method; provide Curl with password and username when available.
(WebCore::ResourceHandle::receivedRequestToContinueWithoutCredential):
    Implement method; reset Curl username and password.
(WebCore::ResourceHandle::receivedCancellation):
    Implement method; notify client that authorization has been cancelled.
* platform/network/curl/ResourceHandleManager.cpp:
(WebCore::isHttpAuthentication):
    Added function to check if http code is an 'Authorization required' code.
(WebCore::getProtectionSpace):
    Added function to initialize a protection space object from a Curl handle and a response object.
(WebCore::headerCallback):
    Notify client when authorization is required.
(WebCore::ResourceHandleManager::applyAuthenticationToRequest):
    Added method to set Curl username and password.
(WebCore::ResourceHandleManager::initializeHandle):
    Use method to set Curl username and password.
* platform/network/curl/ResourceHandleManager.h:
    Added method to set Curl username and password.

Source/WebKit/win:

* WebCoreSupport/WebFrameLoaderClient.cpp:
(WebFrameLoaderClient::dispatchDidReceiveAuthenticationChallenge):
    Implement empty method; use the same implementation as the CFNetwork version does,
    notify delegate when authorization is required.
* WebURLAuthenticationChallengeSenderCurl.cpp:
(WebURLAuthenticationChallengeSender::cancelAuthenticationChallenge):
    Implement empty method; use the same implementation as the CFNetwork version does.
(WebURLAuthenticationChallengeSender::continueWithoutCredentialForAuthenticationChallenge):
    Implement empty method; use the same implementation as the CFNetwork version does.
(WebURLAuthenticationChallengeSender::useCredential):
    Implement empty method; use the same implementation as the CFNetwork version does.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@152908 268f45cc-cd09-0410-ab3c-d52691b4dbfc