Change WebURLLoaderClient::willFollowRedirect() API to return bool

third_party/WebKit/Source/core/fetch/ResourceLoader.cpp

 /*
  * Copyright (C) 2006, 2007, 2010, 2011 Apple Inc. All rights reserved.
  *           (C) 2007 Graham Dennis (graham.dennis@gmail.com)
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 105 matching lines @@
 {
     if (m_loader)
         m_loader->didChangePriority(static_cast<WebURLRequest::Priority>(loadPriority), intraPriorityValue);
 }
 
 void ResourceLoader::cancel()
 {
     didFail(nullptr, ResourceError::cancelledError(m_resource->lastResourceRequest().url()));
 }
 
-void ResourceLoader::willFollowRedirect(WebURLLoader*, WebURLRequest& passedNewRequest, const WebURLResponse& passedRedirectResponse, int64_t encodedDataLength)
+void ResourceLoader::cancelForRedirectAccessCheckError(const KURL& newURL)
+{
+    m_resource->willNotFollowRedirect();
+
+    if (m_loader)
+        didFail(nullptr, ResourceError::cancelledDueToAccessCheckError(newURL));
+}
+
+bool ResourceLoader::willFollowRedirect(WebURLLoader*, WebURLRequest& passedNewRequest, const WebURLResponse& passedRedirectResponse, int64_t encodedDataLength)
 {
     DCHECK(!passedNewRequest.isNull());
     DCHECK(!passedRedirectResponse.isNull());
 
     ResourceRequest& newRequest(passedNewRequest.toMutableResourceRequest());
     const ResourceResponse& redirectResponse(passedRedirectResponse.toResourceResponse());
     newRequest.setRedirectStatus(ResourceRequest::RedirectStatus::FollowedRedirect);
 
-    if (m_fetcher->willFollowRedirect(m_resource.get(), newRequest, redirectResponse, encodedDataLength)) {
-        m_resource->willFollowRedirect(newRequest, redirectResponse);
-    } else {
-        m_resource->willNotFollowRedirect();
-        if (m_loader)
-            didFail(nullptr, ResourceError::cancelledDueToAccessCheckError(newRequest.url()));
+    const KURL originalURL = newRequest.url();
+
+    if (!m_fetcher->willFollowRedirect(m_resource.get(), newRequest, redirectResponse, encodedDataLength)) {
+        cancelForRedirectAccessCheckError(newRequest.url());
+        return false;
     }
+
+    // ResourceFetcher::willFollowRedirect() may rewrite the URL to
+    // something else not for rejecting redirect but for other reasons.
+    // E.g. WebFrameTestClient::willSendRequest() and
+    // RenderFrameImpl::willSendRequest(). We should reflect the
+    // rewriting but currently we cannot. So, return false to make the
+    // redirect fail.
+    if (newRequest.url() != originalURL) {
+        cancelForRedirectAccessCheckError(newRequest.url());
+        return false;
+    }
+
+    if (!m_resource->willFollowRedirect(newRequest, redirectResponse)) {
+        cancelForRedirectAccessCheckError(newRequest.url());
+        return false;
+    }
+
+    return true;
 }
 
 void ResourceLoader::didReceiveCachedMetadata(WebURLLoader*, const char* data, int length)
 {
     m_resource->setSerializedCachedMetadata(data, length);
 }
 
 void ResourceLoader::didSendData(WebURLLoader*, unsigned long long bytesSent, unsigned long long totalBytesToBeSent)
 {
     m_resource->didSendData(bytesSent, totalBytesToBeSent);
@@ skipping 68 matching lines @@
     // empty buffer is a noop in most cases, but is destructive in the case of
     // a 304, where it will overwrite the cached data we should be reusing.
     if (dataOut.size()) {
         m_fetcher->didReceiveData(m_resource.get(), dataOut.data(), dataOut.size(), encodedDataLength);
         m_resource->setResourceBuffer(dataOut);
     }
     didFinishLoading(0, monotonicallyIncreasingTime(), encodedDataLength);
 }
 
 } // namespace blink