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| 1 // Copyright 2017 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 #include "components/subresource_filter/content/browser/subframe_navigation_filt
ering_throttle.h" |
| 6 |
| 7 #include "base/bind.h" |
| 8 #include "base/logging.h" |
| 9 #include "components/subresource_filter/content/browser/async_document_subresour
ce_filter.h" |
| 10 #include "content/public/browser/navigation_handle.h" |
| 11 |
| 12 namespace subresource_filter { |
| 13 |
| 14 SubframeNavigationFilteringThrottle::SubframeNavigationFilteringThrottle( |
| 15 content::NavigationHandle* handle, |
| 16 AsyncDocumentSubresourceFilter* parent_frame_filter) |
| 17 : content::NavigationThrottle(handle), |
| 18 parent_frame_filter_(parent_frame_filter), |
| 19 weak_ptr_factory_(this) { |
| 20 DCHECK(!handle->IsInMainFrame()); |
| 21 DCHECK(parent_frame_filter_); |
| 22 } |
| 23 |
| 24 SubframeNavigationFilteringThrottle::~SubframeNavigationFilteringThrottle() {} |
| 25 |
| 26 content::NavigationThrottle::ThrottleCheckResult |
| 27 SubframeNavigationFilteringThrottle::WillStartRequest() { |
| 28 return DeferToCalculateLoadPolicy(); |
| 29 } |
| 30 |
| 31 content::NavigationThrottle::ThrottleCheckResult |
| 32 SubframeNavigationFilteringThrottle::WillRedirectRequest() { |
| 33 return DeferToCalculateLoadPolicy(); |
| 34 } |
| 35 |
| 36 content::NavigationThrottle::ThrottleCheckResult |
| 37 SubframeNavigationFilteringThrottle::DeferToCalculateLoadPolicy() { |
| 38 parent_frame_filter_->GetLoadPolicyForSubdocument( |
| 39 navigation_handle()->GetURL(), |
| 40 base::Bind(&SubframeNavigationFilteringThrottle::OnCalculatedLoadPolicy, |
| 41 weak_ptr_factory_.GetWeakPtr())); |
| 42 return content::NavigationThrottle::ThrottleCheckResult::DEFER; |
| 43 } |
| 44 |
| 45 void SubframeNavigationFilteringThrottle::OnCalculatedLoadPolicy( |
| 46 blink::WebDocumentSubresourceFilter::LoadPolicy policy) { |
| 47 // TODO(csharrison): Support WouldDisallow pattern and expose the policy for |
| 48 // metrics. Also, cancel with BLOCK_AND_COLLAPSE when it is implemented. |
| 49 if (policy == blink::WebDocumentSubresourceFilter::Disallow) { |
| 50 parent_frame_filter_->ReportDisallowedLoad(); |
| 51 navigation_handle()->CancelDeferredNavigation( |
| 52 content::NavigationThrottle::CANCEL); |
| 53 } else { |
| 54 navigation_handle()->Resume(); |
| 55 } |
| 56 } |
| 57 |
| 58 } // namespace subresource_filter |
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