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/*
* Copyright (C) 2007, 2010 Apple Inc. All rights reserved.
*
* 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.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "core/css/CSSFontFaceSrcValue.h"
#include "core/css/CSSMarkup.h"
#include "core/css/StyleSheetContents.h"
#include "core/dom/Document.h"
#include "core/dom/Node.h"
#include "core/fetch/FetchInitiatorTypeNames.h"
#include "core/fetch/FetchRequest.h"
#include "core/fetch/ResourceFetcher.h"
#include "core/loader/resource/FontResource.h"
#include "platform/CrossOriginAttributeValue.h"
#include "platform/RuntimeEnabledFeatures.h"
#include "platform/fonts/FontCache.h"
#include "platform/fonts/FontCustomPlatformData.h"
#include "platform/weborigin/SecurityPolicy.h"
#include "wtf/text/StringBuilder.h"
namespace blink {
bool CSSFontFaceSrcValue::isSupportedFormat() const {
// Normally we would just check the format, but in order to avoid conflicts
// with the old WinIE style of font-face, we will also check to see if the URL
// ends with .eot. If so, we'll go ahead and assume that we shouldn't load
// it.
if (m_format.isEmpty()) {
return m_absoluteResource.startsWith("data:", TextCaseASCIIInsensitive) ||
!m_absoluteResource.endsWith(".eot", TextCaseASCIIInsensitive);
}
return FontCustomPlatformData::supportsFormat(m_format);
}
String CSSFontFaceSrcValue::customCSSText() const {
StringBuilder result;
if (isLocal()) {
result.append("local(");
result.append(serializeString(m_absoluteResource));
result.append(')');
} else {
result.append(serializeURI(m_specifiedResource));
}
if (!m_format.isEmpty()) {
result.append(" format(");
result.append(serializeString(m_format));
result.append(')');
}
return result.toString();
}
bool CSSFontFaceSrcValue::hasFailedOrCanceledSubresources() const {
return m_fetched && m_fetched->resource()->loadFailedOrCanceled();
}
static void setCrossOriginAccessControl(FetchRequest& request,
SecurityOrigin* securityOrigin) {
// Local fonts are accessible from file: URLs even when
// allowFileAccessFromFileURLs is false.
if (request.url().isLocalFile())
return;
request.setCrossOriginAccessControl(securityOrigin,
CrossOriginAttributeAnonymous);
}
FontResource* CSSFontFaceSrcValue::fetch(Document* document) const {
if (!m_fetched) {
FetchRequest request(ResourceRequest(m_absoluteResource),
FetchInitiatorTypeNames::css);
if (RuntimeEnabledFeatures::webFontsCacheAwareTimeoutAdaptationEnabled())
request.setCacheAwareLoadingEnabled(IsCacheAwareLoadingEnabled);
request.setContentSecurityCheck(m_shouldCheckContentSecurityPolicy);
SecurityOrigin* securityOrigin = document->getSecurityOrigin();
setCrossOriginAccessControl(request, securityOrigin);
request.mutableResourceRequest().setHTTPReferrer(
SecurityPolicy::generateReferrer(m_referrer.referrerPolicy,
request.url(), m_referrer.referrer));
FontResource* resource = FontResource::fetch(request, document->fetcher());
if (!resource)
return nullptr;
m_fetched = FontResourceHelper::create(resource);
} else {
// FIXME: CSSFontFaceSrcValue::fetch is invoked when @font-face rule
// is processed by StyleResolver / StyleEngine.
restoreCachedResourceIfNeeded(document);
}
return m_fetched->resource();
}
void CSSFontFaceSrcValue::restoreCachedResourceIfNeeded(
Document* document) const {
ASSERT(m_fetched);
ASSERT(document && document->fetcher());
const String resourceURL = document->completeURL(m_absoluteResource);
DCHECK_EQ(m_shouldCheckContentSecurityPolicy,
m_fetched->resource()->options().contentSecurityPolicyOption);
document->fetcher()->emulateLoadStartedForInspector(
m_fetched->resource(), KURL(ParsedURLString, resourceURL),
WebURLRequest::RequestContextFont, FetchInitiatorTypeNames::css);
}
bool CSSFontFaceSrcValue::equals(const CSSFontFaceSrcValue& other) const {
return m_isLocal == other.m_isLocal && m_format == other.m_format &&
m_specifiedResource == other.m_specifiedResource &&
m_absoluteResource == other.m_absoluteResource;
}
} // namespace blink
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