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/*
* Copyright (C) 2011 Google 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:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 THE COPYRIGHT
* OWNER 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.
*/
#ifndef ResourceLoaderOptions_h
#define ResourceLoaderOptions_h
#include "core/fetch/FetchInitiatorInfo.h"
#include "platform/CrossThreadCopier.h"
#include "platform/weborigin/SecurityOrigin.h"
namespace blink {
enum DataBufferingPolicy {
BufferData,
DoNotBufferData
};
enum ContentSecurityPolicyDisposition {
CheckContentSecurityPolicy,
DoNotCheckContentSecurityPolicy
};
enum RequestInitiatorContext {
DocumentContext,
WorkerContext,
};
enum StoredCredentials {
AllowStoredCredentials,
DoNotAllowStoredCredentials
};
// APIs like XMLHttpRequest and EventSource let the user decide
// whether to send credentials, but they're always sent for
// same-origin requests. Additional information is needed to handle
// cross-origin redirects correctly.
enum CredentialRequest {
ClientRequestedCredentials,
ClientDidNotRequestCredentials
};
enum MixedContentBlockingTreatment {
TreatAsDefaultForType,
TreatAsPassiveContent,
TreatAsActiveContent,
TreatAsAlwaysAllowedContent
};
enum SynchronousPolicy {
RequestSynchronously,
RequestAsynchronously
};
// A resource fetch can be marked as being CORS enabled. The loader
// must perform an access check upon seeing the response.
enum CORSEnabled {
NotCORSEnabled,
IsCORSEnabled
};
struct ResourceLoaderOptions {
ResourceLoaderOptions()
: dataBufferingPolicy(BufferData)
, allowCredentials(DoNotAllowStoredCredentials)
, credentialsRequested(ClientDidNotRequestCredentials)
, contentSecurityPolicyOption(CheckContentSecurityPolicy)
, requestInitiatorContext(DocumentContext)
, mixedContentBlockingTreatment(TreatAsDefaultForType)
, synchronousPolicy(RequestAsynchronously)
, corsEnabled(NotCORSEnabled)
{
}
ResourceLoaderOptions(
DataBufferingPolicy dataBufferingPolicy,
StoredCredentials allowCredentials,
CredentialRequest credentialsRequested,
ContentSecurityPolicyDisposition contentSecurityPolicyOption,
RequestInitiatorContext requestInitiatorContext)
: dataBufferingPolicy(dataBufferingPolicy)
, allowCredentials(allowCredentials)
, credentialsRequested(credentialsRequested)
, contentSecurityPolicyOption(contentSecurityPolicyOption)
, requestInitiatorContext(requestInitiatorContext)
, mixedContentBlockingTreatment(TreatAsDefaultForType)
, synchronousPolicy(RequestAsynchronously)
, corsEnabled(NotCORSEnabled)
{
}
// Answers the question "can a separate request with these
// different options be re-used" (e.g. preload request)
// The safe (but possibly slow) answer is always false.
bool canReuseRequest(const ResourceLoaderOptions& other) const
{
// dataBufferingPolicy differences are believed to be safe for re-use.
// FIXME: check allowCredentials.
// FIXME: check credentialsRequested.
// FIXME: check contentSecurityPolicyOption.
// initiatorInfo is purely informational and should be benign for re-use.
// requestInitiatorContext is benign (indicates document vs. worker)
// FIXME: check mixedContentBlockingTreatment.
// synchronousPolicy (safe to re-use an async XHR response for sync, etc.)
return corsEnabled == other.corsEnabled;
// securityOrigin has more complicated checks which callers are responsible for.
}
// When adding members, CrossThreadResourceLoaderOptionsData should be
// updated.
DataBufferingPolicy dataBufferingPolicy;
StoredCredentials allowCredentials; // Whether HTTP credentials and cookies are sent with the request.
CredentialRequest credentialsRequested; // Whether the client (e.g. XHR) wanted credentials in the first place.
ContentSecurityPolicyDisposition contentSecurityPolicyOption;
FetchInitiatorInfo initiatorInfo;
RequestInitiatorContext requestInitiatorContext;
MixedContentBlockingTreatment mixedContentBlockingTreatment;
SynchronousPolicy synchronousPolicy;
CORSEnabled corsEnabled; // If the resource is loaded out-of-origin, whether or not to use CORS.
RefPtr<SecurityOrigin> securityOrigin;
};
// Encode AtomicString (in FetchInitiatorInfo) as String to cross threads.
struct CrossThreadResourceLoaderOptionsData {
explicit CrossThreadResourceLoaderOptionsData(const ResourceLoaderOptions& options)
: dataBufferingPolicy(options.dataBufferingPolicy)
, allowCredentials(options.allowCredentials)
, credentialsRequested(options.credentialsRequested)
, contentSecurityPolicyOption(options.contentSecurityPolicyOption)
, initiatorInfo(options.initiatorInfo)
, requestInitiatorContext(options.requestInitiatorContext)
, mixedContentBlockingTreatment(options.mixedContentBlockingTreatment)
, synchronousPolicy(options.synchronousPolicy)
, corsEnabled(options.corsEnabled)
, securityOrigin(options.securityOrigin ? options.securityOrigin->isolatedCopy() : nullptr) { }
operator ResourceLoaderOptions() const
{
ResourceLoaderOptions options;
options.dataBufferingPolicy = dataBufferingPolicy;
options.allowCredentials = allowCredentials;
options.credentialsRequested = credentialsRequested;
options.contentSecurityPolicyOption = contentSecurityPolicyOption;
options.initiatorInfo = initiatorInfo;
options.requestInitiatorContext = requestInitiatorContext;
options.mixedContentBlockingTreatment = mixedContentBlockingTreatment;
options.synchronousPolicy = synchronousPolicy;
options.corsEnabled = corsEnabled;
options.securityOrigin = securityOrigin;
return options;
}
DataBufferingPolicy dataBufferingPolicy;
StoredCredentials allowCredentials;
CredentialRequest credentialsRequested;
ContentSecurityPolicyDisposition contentSecurityPolicyOption;
CrossThreadFetchInitiatorInfoData initiatorInfo;
RequestInitiatorContext requestInitiatorContext;
MixedContentBlockingTreatment mixedContentBlockingTreatment;
SynchronousPolicy synchronousPolicy;
CORSEnabled corsEnabled;
RefPtr<SecurityOrigin> securityOrigin;
};
template<> struct CrossThreadCopierBase<false, false, false, ResourceLoaderOptions> {
typedef CrossThreadResourceLoaderOptionsData Type;
static Type copy(const ResourceLoaderOptions& options)
{
return CrossThreadResourceLoaderOptionsData(options);
}
};
} // namespace blink
#endif // ResourceLoaderOptions_h
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