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// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "webcontentdecryptionmodule_impl.h"
#include "base/basictypes.h"
#include "base/bind.h"
#include "base/logging.h"
#include "base/numerics/safe_conversions.h"
#include "base/strings/string_util.h"
#include "base/strings/utf_string_conversions.h"
#include "media/base/cdm_promise.h"
#include "media/base/key_systems.h"
#include "media/base/media_keys.h"
#include "media/blink/cdm_result_promise.h"
#include "media/blink/cdm_session_adapter.h"
#include "media/blink/webcontentdecryptionmodulesession_impl.h"
#include "third_party/WebKit/public/platform/WebString.h"
#include "third_party/WebKit/public/web/WebSecurityOrigin.h"
#include "url/gurl.h"
namespace media {
// TODO(jrummell): Remove once WebContentDecryptionModuleResult always passed.
WebContentDecryptionModuleImpl* WebContentDecryptionModuleImpl::Create(
CdmFactory* cdm_factory,
const blink::WebSecurityOrigin& security_origin,
const base::string16& key_system) {
DCHECK(!security_origin.isNull());
DCHECK(!key_system.empty());
// TODO(ddorwin): Guard against this in supported types check and remove this.
// Chromium only supports ASCII key systems.
if (!base::IsStringASCII(key_system)) {
NOTREACHED();
return NULL;
}
std::string key_system_ascii = base::UTF16ToASCII(key_system);
if (!IsConcreteSupportedKeySystem(key_system_ascii))
return NULL;
// If unique security origin, don't try to create the CDM.
if (security_origin.isUnique() || security_origin.toString() == "null") {
DLOG(ERROR) << "CDM use not allowed for unique security origin.";
return NULL;
}
scoped_refptr<CdmSessionAdapter> adapter(new CdmSessionAdapter());
GURL security_origin_as_gurl(security_origin.toString());
if (!adapter->Initialize(
cdm_factory, key_system_ascii, security_origin_as_gurl)) {
return NULL;
}
return new WebContentDecryptionModuleImpl(adapter);
}
void WebContentDecryptionModuleImpl::Create(
media::CdmFactory* cdm_factory,
const blink::WebSecurityOrigin& security_origin,
const base::string16& key_system,
blink::WebContentDecryptionModuleResult result) {
DCHECK(!security_origin.isNull());
DCHECK(!key_system.empty());
// TODO(ddorwin): Guard against this in supported types check and remove this.
// Chromium only supports ASCII key systems.
if (!base::IsStringASCII(key_system)) {
NOTREACHED();
result.completeWithError(
blink::WebContentDecryptionModuleExceptionNotSupportedError, 0,
"Invalid keysystem.");
return;
}
std::string key_system_ascii = base::UTF16ToASCII(key_system);
if (!media::IsConcreteSupportedKeySystem(key_system_ascii)) {
std::string message =
"Keysystem '" + key_system_ascii + "' is not supported.";
result.completeWithError(
blink::WebContentDecryptionModuleExceptionNotSupportedError, 0,
blink::WebString::fromUTF8(message));
return;
}
// If unique security origin, don't try to create the CDM.
if (security_origin.isUnique() || security_origin.toString() == "null") {
result.completeWithError(
blink::WebContentDecryptionModuleExceptionNotSupportedError, 0,
"CDM use not allowed for unique security origin.");
return;
}
GURL security_origin_as_gurl(security_origin.toString());
scoped_refptr<CdmSessionAdapter> adapter(new CdmSessionAdapter());
// TODO(jrummell): Pass WebContentDecryptionModuleResult (or similar) to
// Initialize() so that more specific errors can be reported.
if (!adapter->Initialize(cdm_factory, key_system_ascii,
security_origin_as_gurl)) {
result.completeWithError(
blink::WebContentDecryptionModuleExceptionNotSupportedError, 0,
"Failed to initialize CDM.");
return;
}
result.completeWithContentDecryptionModule(
new WebContentDecryptionModuleImpl(adapter));
}
WebContentDecryptionModuleImpl::WebContentDecryptionModuleImpl(
scoped_refptr<CdmSessionAdapter> adapter)
: adapter_(adapter) {
}
WebContentDecryptionModuleImpl::~WebContentDecryptionModuleImpl() {
}
// The caller owns the created session.
blink::WebContentDecryptionModuleSession*
WebContentDecryptionModuleImpl::createSession() {
return adapter_->CreateSession();
}
blink::WebContentDecryptionModuleSession*
WebContentDecryptionModuleImpl::createSession(
blink::WebContentDecryptionModuleSession::Client* client) {
WebContentDecryptionModuleSessionImpl* session = adapter_->CreateSession();
session->setClientInterface(client);
return session;
}
void WebContentDecryptionModuleImpl::setServerCertificate(
const uint8* server_certificate,
size_t server_certificate_length,
blink::WebContentDecryptionModuleResult result) {
DCHECK(server_certificate);
adapter_->SetServerCertificate(
server_certificate,
base::saturated_cast<int>(server_certificate_length),
scoped_ptr<SimpleCdmPromise>(
new CdmResultPromise<>(result, std::string())));
}
CdmContext* WebContentDecryptionModuleImpl::GetCdmContext() {
return adapter_->GetCdmContext();
}
} // namespace media
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