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/*
* Copyright (C) 2025 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 "DigitalCredential.h"
#if ENABLE(WEB_AUTHN)
#include "Chrome.h"
#include "CredentialRequestCoordinator.h"
#include "CredentialRequestOptions.h"
#include "DigitalCredentialRequestOptions.h"
#include "DigitalCredentialsRequestData.h"
#include "Document.h"
#include "DocumentInlines.h"
#include "ExceptionOr.h"
#include "IDLTypes.h"
#include "IdentityCredentialProtocol.h"
#include "LocalDOMWindow.h"
#include "LocalFrame.h"
#include "MediationRequirement.h"
#include "Page.h"
#include "VisibilityState.h"
#include <Logging.h>
#include <wtf/JSONValues.h>
#include <wtf/UUID.h>
#include <wtf/text/Base64.h>
namespace WebCore {
Ref<DigitalCredential> DigitalCredential::create(JSC::Strong<JSC::JSObject>&& data, IdentityCredentialProtocol protocol)
{
return adoptRef(*new DigitalCredential(WTFMove(data), protocol));
}
DigitalCredential::~DigitalCredential() = default;
DigitalCredential::DigitalCredential(JSC::Strong<JSC::JSObject>&& data, IdentityCredentialProtocol protocol)
: BasicCredential(createVersion4UUIDString(), Type::DigitalCredential, Discovery::CredentialStore)
, m_protocol(protocol)
, m_data(WTFMove(data))
{
}
static ExceptionOr<DigitalCredentialRequestTypes> jsToCredentialRequest(const Document& document, const DigitalCredentialRequest& request)
{
auto scope = DECLARE_THROW_SCOPE(document.globalObject()->vm());
auto* globalObject = document.globalObject();
switch (request.protocol) {
case IdentityCredentialProtocol::OrgIsoMdoc: {
auto result = convertDictionary<MobileDocumentRequest>(*globalObject, request.data.get());
if (result.hasException(scope))
return Exception { ExceptionCode::ExistingExceptionError };
return DigitalCredentialRequestTypes { std::in_place_type<MobileDocumentRequest>, result.releaseReturnValue() };
}
case IdentityCredentialProtocol::Openid4vp: {
auto result = convertDictionary<OpenID4VPRequest>(*globalObject, request.data.get());
if (result.hasException(scope))
return Exception { ExceptionCode::ExistingExceptionError };
return DigitalCredentialRequestTypes { std::in_place_type<OpenID4VPRequest>, result.releaseReturnValue() };
}
default:
ASSERT_NOT_REACHED();
return Exception { ExceptionCode::TypeError, "Unsupported protocol."_s };
}
}
void DigitalCredential::discoverFromExternalSource(const Document& document, CredentialPromise&& promise, CredentialRequestOptions&& options)
{
ASSERT(options.digital);
if (options.mediation != MediationRequirement::Required) {
promise.reject(Exception { ExceptionCode::TypeError, "User mediation is required for DigitalCredential."_s });
return;
}
if (!PermissionsPolicy::isFeatureEnabled(PermissionsPolicy::Feature::DigitalCredentialsGetRule, document, PermissionsPolicy::ShouldReportViolation::No)) {
promise.reject(Exception { ExceptionCode::NotAllowedError, "Third-party iframes are not allowed to call .get() unless explicitly allowed via Permissions Policy (digital-credentials-get)"_s });
return;
}
RefPtr frame = document.protectedFrame();
RefPtr window = document.protectedWindow();
if (!frame || !window) {
LOG(DigitalCredentials, "Preconditions for DigitalCredential.get() are not met");
promise.reject(ExceptionCode::InvalidStateError, "Preconditions for calling .get() are not met."_s);
return;
}
RefPtr page = frame->protectedPage();
if (!page) {
LOG(DigitalCredentials, "Preconditions for DigitalCredential.get() are not met");
promise.reject(ExceptionCode::InvalidStateError, "Preconditions for calling .get() are not met."_s);
return;
}
if (!document.hasFocus()) {
promise.reject(Exception { ExceptionCode::NotAllowedError, "The document is not focused."_s });
return;
}
if (document.visibilityState() != VisibilityState::Visible) {
promise.reject(Exception { ExceptionCode::NotAllowedError, "The document is not visible."_s });
return;
}
if (options.digital->requests.isEmpty()) {
promise.reject(Exception { ExceptionCode::TypeError, "At least one request must present."_s });
return;
}
if (!window->consumeTransientActivation()) {
promise.reject(Exception { ExceptionCode::NotAllowedError, "Calling get() needs to be triggered by an activation triggering user event."_s });
return;
}
DigitalCredentialsRequestData requestData;
for (auto& request : options.digital->requests) {
auto resultOrException = jsToCredentialRequest(document, request);
if (resultOrException.hasException()) {
promise.reject(resultOrException.releaseException());
return;
}
DigitalCredentialRequestTypes credentialVariant = resultOrException.releaseReturnValue();
std::visit(
[&](auto& credential) { requestData.requests.append(credential); },
credentialVariant);
}
RefPtr topOrigin = document.protectedTopOrigin();
RefPtr documentOrigin = document.protectedSecurityOrigin();
if (!topOrigin || !documentOrigin) {
promise.reject(Exception { ExceptionCode::SecurityError, "Required document origin is not available."_s });
return;
}
requestData.topOrigin = topOrigin->data().isolatedCopy();
requestData.documentOrigin = documentOrigin->data().isolatedCopy();
#if HAVE(DIGITAL_CREDENTIALS_UI)
Ref coordinator = page->credentialRequestCoordinator();
coordinator->presentPicker(WTFMove(promise), WTFMove(requestData), options.signal);
#else
promise.reject(Exception { ExceptionCode::NotSupportedError, "Digital credentials are not supported."_s });
#endif
}
} // namespace WebCore
#endif // ENABLE(WEB_AUTHN)
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