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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/media/android/cdm/media_drm_storage_factory.h"
#include <optional>
#include <utility>
#include "base/functional/bind.h"
#include "base/functional/callback.h"
#include "base/logging.h"
#include "base/metrics/histogram_functions.h"
#include "chrome/browser/media/android/cdm/media_drm_origin_id_manager.h"
#include "chrome/browser/media/android/cdm/media_drm_origin_id_manager_factory.h"
#include "chrome/browser/media/android/cdm/per_device_provisioning_permission.h"
#include "chrome/browser/profiles/profile.h"
#include "components/cdm/browser/media_drm_storage_impl.h"
#include "components/prefs/pref_service.h"
#include "content/public/browser/browser_context.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/render_frame_host.h"
#include "media/base/android/media_drm_bridge.h"
#include "media/base/media_switches.h"
namespace {
using MediaDrmOriginId = media::MediaDrmStorage::MediaDrmOriginId;
using GetOriginIdStatus = MediaDrmOriginIdManager::GetOriginIdStatus;
using OriginIdReadyCB =
base::OnceCallback<void(bool success, const MediaDrmOriginId& origin_id)>;
// These values are reported to UMA. Entries should not be renumbered and
// numeric values should never be reused.
enum class GetOriginIdResult {
kSuccessWithPreProvisionedOriginId = 0,
kSuccessWithNewlyProvisionedOriginId = 1,
kSuccessWithUnprovisionedOriginId = 2,
kFailureOnPerAppProvisioningDevice = 3,
kFailureOnNonPerAppProvisioningDevice = 4,
kFailureWithNoFactory = 5,
kMaxValue = kFailureWithNoFactory,
};
GetOriginIdResult ConvertGetOriginIdStatusToResult(GetOriginIdStatus status) {
switch (status) {
case GetOriginIdStatus::kSuccessWithPreProvisionedOriginId:
return GetOriginIdResult::kSuccessWithPreProvisionedOriginId;
case GetOriginIdStatus::kSuccessWithNewlyProvisionedOriginId:
return GetOriginIdResult::kSuccessWithNewlyProvisionedOriginId;
case GetOriginIdStatus::kFailure:
break;
}
return media::MediaDrmBridge::IsPerApplicationProvisioningSupported()
? GetOriginIdResult::kFailureOnPerAppProvisioningDevice
: GetOriginIdResult::kFailureOnNonPerAppProvisioningDevice;
}
// Update UMA with |result|.
void ReportResultToUma(GetOriginIdResult result) {
base::UmaHistogramEnumeration("Media.EME.MediaDrm.GetOriginIdResult", result);
}
// Update UMA with |status|, and then pass |origin_id| to |callback|.
void ReportStatusToUmaAndNotifyCaller(OriginIdReadyCB callback,
GetOriginIdStatus status,
const MediaDrmOriginId& origin_id) {
ReportResultToUma(ConvertGetOriginIdStatusToResult(status));
std::move(callback).Run(status != GetOriginIdStatus::kFailure, origin_id);
}
void CreateOriginIdWithMediaDrmOriginIdManager(Profile* profile,
OriginIdReadyCB callback) {
auto* origin_id_manager =
MediaDrmOriginIdManagerFactory::GetForProfile(profile);
if (!origin_id_manager) {
ReportResultToUma(GetOriginIdResult::kFailureWithNoFactory);
std::move(callback).Run(false, std::nullopt);
return;
}
origin_id_manager->GetOriginId(
base::BindOnce(&ReportStatusToUmaAndNotifyCaller, std::move(callback)));
}
void CreateOriginId(OriginIdReadyCB callback) {
auto origin_id = base::UnguessableToken::Create();
DVLOG(2) << __func__ << ": origin_id = " << origin_id;
ReportResultToUma(GetOriginIdResult::kSuccessWithUnprovisionedOriginId);
std::move(callback).Run(true, origin_id);
}
void AllowEmptyOriginId(content::RenderFrameHost* render_frame_host,
base::OnceCallback<void(bool)> callback) {
if (media::MediaDrmBridge::IsPerApplicationProvisioningSupported()) {
// If per-application provisioning is supported by the device, use of the
// empty origin ID won't work so don't allow it.
std::move(callback).Run(false);
return;
}
// Check if the user will allow use of the per-device identifier.
RequestPerDeviceProvisioningPermission(render_frame_host,
std::move(callback));
}
} // namespace
void CreateMediaDrmStorage(
content::RenderFrameHost* render_frame_host,
mojo::PendingReceiver<media::mojom::MediaDrmStorage> receiver) {
DVLOG(1) << __func__;
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
CHECK(render_frame_host);
content::BrowserContext* browser_context =
render_frame_host->GetBrowserContext();
DCHECK(browser_context) << "BrowserContext not available.";
Profile* profile = Profile::FromBrowserContext(browser_context);
DCHECK(profile) << "Profile not available.";
PrefService* pref_service = profile->GetPrefs();
DCHECK(pref_service) << "PrefService not available.";
if (render_frame_host->GetLastCommittedOrigin().opaque()) {
DVLOG(1) << __func__ << ": Unique origin.";
return;
}
// Only use MediaDrmOriginIdManager's preprovisioned origin IDs when feature
// kMediaDrmPreprovisioning is enabled.
auto get_origin_id_cb =
base::FeatureList::IsEnabled(media::kMediaDrmPreprovisioning)
? base::BindRepeating(&CreateOriginIdWithMediaDrmOriginIdManager,
profile)
: base::BindRepeating(&CreateOriginId);
// The object will be deleted on connection error, or when the frame navigates
// away. See DocumentService for details.
new cdm::MediaDrmStorageImpl(
*render_frame_host, pref_service, get_origin_id_cb,
base::BindRepeating(&AllowEmptyOriginId, render_frame_host),
std::move(receiver));
}
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