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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_BROWSER_SMS_SMS_PROVIDER_H_
#define CONTENT_BROWSER_SMS_SMS_PROVIDER_H_
#include <memory>
#include "base/observer_list.h"
#include "base/observer_list_types.h"
#include "content/browser/sms/sms_parser.h"
#include "content/common/content_export.h"
namespace content {
class RenderFrameHost;
// When WebOTP API is called on mobile, a local |SmsProvider| fetches the SMS on
// the same device. When the API is called on desktop, a remote |SmsProvider|
// will fetch the SMS on mobile. In this case we only try to use the CodeBrowser
// backend and not fall back to the UserConsent one.
enum class SmsFetchType {
kLocal,
kRemote,
};
// This class wraps the platform-specific functions and allows tests to
// inject custom providers.
class CONTENT_EXPORT SmsProvider {
public:
using FailureType = SmsFetchFailureType;
using OriginList = SmsFetcher::OriginList;
using SmsParsingStatus = SmsParser::SmsParsingStatus;
using UserConsent = SmsFetcher::UserConsent;
class Observer : public base::CheckedObserver {
public:
// Receive an |one_time_code| from an origin. Return true if the message is
// handled, which stops its propagation to other observers.
virtual bool OnReceive(const OriginList&,
const std::string& one_time_code,
UserConsent) = 0;
virtual bool OnFailure(FailureType failure_type) = 0;
virtual void NotifyParsingFailure(SmsParser::SmsParsingStatus) {}
};
SmsProvider();
SmsProvider(const SmsProvider&) = delete;
SmsProvider& operator=(const SmsProvider&) = delete;
virtual ~SmsProvider();
// Listen to the next incoming SMS and notify observers (exactly once) when
// it is received or (exclusively) when it timeouts. |render_frame_host|
// is the RenderFrameHost for the renderer that issued the request, and is
// passed in to support showing native permission confirmation prompt on the
// relevant window. |fetch_type| indicates that whether the retrieval request
// is made from a remote device, e.g. desktop.
virtual void Retrieve(RenderFrameHost* render_frame_host,
SmsFetchType fetch_type) = 0;
static std::unique_ptr<SmsProvider> Create();
void AddObserver(Observer*);
void RemoveObserver(const Observer*);
void NotifyReceive(const OriginList&,
const std::string& one_time_code,
UserConsent);
void NotifyReceiveForTesting(const std::string& sms, UserConsent);
void NotifyFailure(FailureType failure_type);
void RecordParsingStatus(SmsParsingStatus status);
bool HasObservers();
protected:
void NotifyReceive(const std::string& sms, UserConsent);
private:
base::ObserverList<Observer> observers_;
};
} // namespace content
#endif // CONTENT_BROWSER_SMS_SMS_PROVIDER_H_
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