96 lines
4.5 KiB
C++
96 lines
4.5 KiB
C++
/*
|
|
* Copyright (C) 2021 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 INC. AND ITS 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 APPLE INC. OR ITS 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 "config.h"
|
|
#include "CrossOriginEmbedderPolicy.h"
|
|
|
|
#include "HTTPHeaderNames.h"
|
|
#include "HTTPParsers.h"
|
|
#include "ResourceResponse.h"
|
|
#include "ScriptExecutionContext.h"
|
|
#include "SecurityOrigin.h"
|
|
|
|
namespace WebCore {
|
|
|
|
// https://html.spec.whatwg.org/multipage/origin.html#obtain-an-embedder-policy
|
|
CrossOriginEmbedderPolicy obtainCrossOriginEmbedderPolicy(const ResourceResponse& response, IsSecureContext isSecureContext)
|
|
{
|
|
auto parseCOEPHeader = [&response](HTTPHeaderName headerName, auto& value, auto& reportingEndpoint) {
|
|
auto coepParsingResult = parseStructuredFieldValue(response.httpHeaderField(headerName));
|
|
if (coepParsingResult && coepParsingResult->first == "require-corp") {
|
|
value = CrossOriginEmbedderPolicyValue::RequireCORP;
|
|
reportingEndpoint = coepParsingResult->second.get("report-to"_s);
|
|
}
|
|
};
|
|
|
|
CrossOriginEmbedderPolicy policy;
|
|
if (isSecureContext == IsSecureContext::No)
|
|
return policy;
|
|
|
|
parseCOEPHeader(HTTPHeaderName::CrossOriginEmbedderPolicy, policy.value, policy.reportingEndpoint);
|
|
parseCOEPHeader(HTTPHeaderName::CrossOriginEmbedderPolicyReportOnly, policy.reportOnlyValue, policy.reportOnlyReportingEndpoint);
|
|
return policy;
|
|
}
|
|
|
|
CrossOriginEmbedderPolicy obtainCrossOriginEmbedderPolicy(const ResourceResponse& response, const ScriptExecutionContext& context)
|
|
{
|
|
if (!context.settingsValues().crossOriginEmbedderPolicyEnabled)
|
|
return { };
|
|
|
|
// FIXME: about:blank should be marked as secure as per https://w3c.github.io/webappsec-secure-contexts/#potentially-trustworthy-url.
|
|
auto isSecureContext = context.isSecureContext() || context.url() == aboutBlankURL() || context.url().isEmpty() ? IsSecureContext::Yes : IsSecureContext::No;
|
|
return obtainCrossOriginEmbedderPolicy(response, isSecureContext);
|
|
}
|
|
|
|
CrossOriginEmbedderPolicy CrossOriginEmbedderPolicy::isolatedCopy() const
|
|
{
|
|
return {
|
|
value,
|
|
reportingEndpoint.isolatedCopy(),
|
|
reportOnlyValue,
|
|
reportOnlyReportingEndpoint.isolatedCopy()
|
|
};
|
|
}
|
|
|
|
void addCrossOriginEmbedderPolicyHeaders(ResourceResponse& response, const CrossOriginEmbedderPolicy& coep)
|
|
{
|
|
if (coep.value != CrossOriginEmbedderPolicyValue::UnsafeNone) {
|
|
ASSERT(coep.value == CrossOriginEmbedderPolicyValue::RequireCORP);
|
|
if (coep.reportingEndpoint.isEmpty())
|
|
response.setHTTPHeaderField(HTTPHeaderName::CrossOriginEmbedderPolicy, "require-corp"_s);
|
|
else
|
|
response.setHTTPHeaderField(HTTPHeaderName::CrossOriginEmbedderPolicy, makeString("require-corp; report-to=\"", coep.reportingEndpoint, '\"'));
|
|
}
|
|
if (coep.reportOnlyValue != CrossOriginEmbedderPolicyValue::UnsafeNone) {
|
|
ASSERT(coep.reportOnlyValue == CrossOriginEmbedderPolicyValue::RequireCORP);
|
|
if (coep.reportOnlyReportingEndpoint.isEmpty())
|
|
response.setHTTPHeaderField(HTTPHeaderName::CrossOriginEmbedderPolicyReportOnly, "require-corp"_s);
|
|
else
|
|
response.setHTTPHeaderField(HTTPHeaderName::CrossOriginEmbedderPolicyReportOnly, makeString("require-corp; report-to=\"", coep.reportOnlyReportingEndpoint, '\"'));
|
|
}
|
|
}
|
|
|
|
} // namespace WebCore
|