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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 "webcontentdecryptionmodulesession_impl.h"
#include "base/bind.h"
#include "base/callback_helpers.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/media_keys.h"
#include "media/blink/cdm_result_promise.h"
#include "media/blink/cdm_session_adapter.h"
#include "media/blink/new_session_cdm_result_promise.h"
#include "third_party/WebKit/public/platform/WebString.h"
#include "third_party/WebKit/public/platform/WebURL.h"
namespace media {
const char kCreateSessionUMAName[] = "CreateSession";
const char kLoadSessionUMAName[] = "LoadSession";
WebContentDecryptionModuleSessionImpl::WebContentDecryptionModuleSessionImpl(
const scoped_refptr<CdmSessionAdapter>& adapter)
: adapter_(adapter), is_closed_(false), weak_ptr_factory_(this) {
}
WebContentDecryptionModuleSessionImpl::
~WebContentDecryptionModuleSessionImpl() {
if (!web_session_id_.empty())
adapter_->UnregisterSession(web_session_id_);
}
void WebContentDecryptionModuleSessionImpl::setClientInterface(Client* client) {
client_ = client;
}
blink::WebString WebContentDecryptionModuleSessionImpl::sessionId() const {
return blink::WebString::fromUTF8(web_session_id_);
}
void WebContentDecryptionModuleSessionImpl::initializeNewSession(
const blink::WebString& init_data_type,
const uint8* init_data,
size_t init_data_length) {
// TODO(jrummell): Remove once blink updated.
NOTREACHED();
}
void WebContentDecryptionModuleSessionImpl::update(const uint8* response,
size_t response_length) {
// TODO(jrummell): Remove once blink updated.
NOTREACHED();
}
void WebContentDecryptionModuleSessionImpl::release() {
// TODO(jrummell): Remove once blink updated.
NOTREACHED();
}
void WebContentDecryptionModuleSessionImpl::initializeNewSession(
const blink::WebString& init_data_type,
const uint8* init_data,
size_t init_data_length,
const blink::WebString& session_type,
blink::WebContentDecryptionModuleResult result) {
DCHECK(web_session_id_.empty());
// TODO(ddorwin): Guard against this in supported types check and remove this.
// Chromium only supports ASCII MIME types.
if (!base::IsStringASCII(init_data_type)) {
NOTREACHED();
std::string message = "The initialization data type " +
init_data_type.utf8() +
" is not supported by the key system.";
result.completeWithError(
blink::WebContentDecryptionModuleExceptionNotSupportedError, 0,
blink::WebString::fromUTF8(message));
return;
}
std::string init_data_type_as_ascii = base::UTF16ToASCII(init_data_type);
DLOG_IF(WARNING, init_data_type_as_ascii.find('/') != std::string::npos)
<< "init_data_type '" << init_data_type_as_ascii
<< "' may be a MIME type";
adapter_->InitializeNewSession(
init_data_type_as_ascii, init_data,
base::saturated_cast<int>(init_data_length), MediaKeys::TEMPORARY_SESSION,
scoped_ptr<NewSessionCdmPromise>(new NewSessionCdmResultPromise(
result, adapter_->GetKeySystemUMAPrefix() + kCreateSessionUMAName,
base::Bind(
&WebContentDecryptionModuleSessionImpl::OnSessionInitialized,
base::Unretained(this)))));
}
void WebContentDecryptionModuleSessionImpl::load(
const blink::WebString& session_id,
blink::WebContentDecryptionModuleResult result) {
DCHECK(!session_id.isEmpty());
DCHECK(web_session_id_.empty());
adapter_->LoadSession(
base::UTF16ToASCII(session_id),
scoped_ptr<NewSessionCdmPromise>(new NewSessionCdmResultPromise(
result, adapter_->GetKeySystemUMAPrefix() + kLoadSessionUMAName,
base::Bind(
&WebContentDecryptionModuleSessionImpl::OnSessionInitialized,
base::Unretained(this)))));
}
void WebContentDecryptionModuleSessionImpl::update(
const uint8* response,
size_t response_length,
blink::WebContentDecryptionModuleResult result) {
DCHECK(response);
DCHECK(!web_session_id_.empty());
adapter_->UpdateSession(web_session_id_, response,
base::saturated_cast<int>(response_length),
scoped_ptr<SimpleCdmPromise>(
new CdmResultPromise<>(result, std::string())));
}
void WebContentDecryptionModuleSessionImpl::close(
blink::WebContentDecryptionModuleResult result) {
DCHECK(!web_session_id_.empty());
adapter_->CloseSession(web_session_id_,
scoped_ptr<SimpleCdmPromise>(
new CdmResultPromise<>(result, std::string())));
}
void WebContentDecryptionModuleSessionImpl::remove(
blink::WebContentDecryptionModuleResult result) {
DCHECK(!web_session_id_.empty());
adapter_->RemoveSession(web_session_id_,
scoped_ptr<SimpleCdmPromise>(
new CdmResultPromise<>(result, std::string())));
}
void WebContentDecryptionModuleSessionImpl::getUsableKeyIds(
blink::WebContentDecryptionModuleResult result) {
DCHECK(!web_session_id_.empty());
adapter_->GetUsableKeyIds(
web_session_id_,
scoped_ptr<KeyIdsPromise>(
new CdmResultPromise<KeyIdsVector>(result, std::string())));
}
void WebContentDecryptionModuleSessionImpl::release(
blink::WebContentDecryptionModuleResult result) {
close(result);
}
void WebContentDecryptionModuleSessionImpl::OnSessionMessage(
const std::vector<uint8>& message,
const GURL& destination_url) {
DCHECK(client_) << "Client not set before message event";
client_->message(message.empty() ? NULL : &message[0], message.size(),
destination_url);
}
void WebContentDecryptionModuleSessionImpl::OnSessionKeysChange(
bool has_additional_usable_key) {
// TODO(jrummell): Update this once Blink client supports this.
}
void WebContentDecryptionModuleSessionImpl::OnSessionExpirationUpdate(
const base::Time& new_expiry_time) {
client_->expirationChanged(new_expiry_time.ToJsTime());
}
void WebContentDecryptionModuleSessionImpl::OnSessionClosed() {
if (is_closed_)
return;
is_closed_ = true;
client_->close();
}
blink::WebContentDecryptionModuleResult::SessionStatus
WebContentDecryptionModuleSessionImpl::OnSessionInitialized(
const std::string& web_session_id) {
// CDM will return NULL if the session to be loaded can't be found.
if (web_session_id.empty())
return blink::WebContentDecryptionModuleResult::SessionNotFound;
DCHECK(web_session_id_.empty()) << "Session ID may not be changed once set.";
web_session_id_ = web_session_id;
return adapter_->RegisterSession(web_session_id_,
weak_ptr_factory_.GetWeakPtr())
? blink::WebContentDecryptionModuleResult::NewSession
: blink::WebContentDecryptionModuleResult::SessionAlreadyExists;
}
} // namespace media
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