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/*
* Copyright (c) 2010-2017 Isode Limited.
* All rights reserved.
* See the COPYING file for more information.
*/
#pragma once
#include <memory>
#include <string>
#include <boost/cstdint.hpp>
#include <Swiften/Base/API.h>
#include <Swiften/Base/ByteArray.h>
#include <Swiften/Elements/JingleS5BTransportPayload.h>
#include <Swiften/FileTransfer/FileTransferOptions.h>
#include <Swiften/FileTransfer/IncomingFileTransfer.h>
#include <Swiften/FileTransfer/JingleFileTransfer.h>
#include <Swiften/Jingle/JingleContentID.h>
namespace Swift {
class CryptoProvider;
class FileTransferTransporterFactory;
class IncrementalBytestreamHashCalculator;
class JID;
class JingleContentPayload;
class JingleFileTransferDescription;
class JingleSession;
class Timer;
class TimerFactory;
/**
* @brief The IncomingJingleFileTransfer class contains the business logic for managing incoming
* Jingle file transfers.
*
* Calling IncomingJingleFileTransfer::accept will start to negotiate possible transfer
* methods and after a working method has been decided among peers the trasnfer is started.
*/
class SWIFTEN_API IncomingJingleFileTransfer : public IncomingFileTransfer, public JingleFileTransfer {
public:
typedef std::shared_ptr<IncomingJingleFileTransfer> ref;
IncomingJingleFileTransfer(
const JID& recipient,
std::shared_ptr<JingleSession>,
std::shared_ptr<JingleContentPayload> content,
FileTransferTransporterFactory*,
TimerFactory*,
CryptoProvider*);
virtual ~IncomingJingleFileTransfer() override;
virtual void accept(std::shared_ptr<WriteBytestream>, const FileTransferOptions& = FileTransferOptions()) override;
virtual void cancel() override;
private:
enum State {
Initial,
GeneratingInitialLocalCandidates,
TryingCandidates,
WaitingForPeerProxyActivate,
WaitingForLocalProxyActivate,
WaitingForFallbackOrTerminate,
Transferring,
WaitingForHash,
Finished
};
virtual void handleSessionTerminateReceived(
boost::optional<JinglePayload::Reason> reason) override;
virtual void handleSessionInfoReceived(std::shared_ptr<JinglePayload>) override;
virtual void handleTransportReplaceReceived(
const JingleContentID&, std::shared_ptr<JingleTransportPayload>) override;
virtual void handleLocalTransportCandidatesGenerated(
const std::string& s5bSessionID,
const std::vector<JingleS5BTransportPayload::Candidate>&,
const std::string& dstAddr) override;
void handleWriteStreamDataReceived(const std::vector<unsigned char>& data);
void stopActiveTransport();
void checkCandidateSelected();
virtual JingleContentID getContentID() const override;
void checkIfAllDataReceived();
bool verifyData();
void handleWaitOnHashTimerTicked();
void handleTransferFinished(boost::optional<FileTransferError>);
private:
virtual void startTransferViaRemoteCandidate() override;
virtual void startTransferViaLocalCandidate() override;
void checkHashAndTerminate();
void stopAll();
void setState(State state);
void setFinishedState(FileTransfer::State::Type, const boost::optional<FileTransferError>& error);
const JID& getSender() const override;
const JID& getRecipient() const override;
static FileTransfer::State::Type getExternalState(State state);
virtual bool hasPriorityOnCandidateTie() const override;
virtual void fallback() override;
virtual void startTransferring(std::shared_ptr<TransportSession>) override;
virtual bool isWaitingForPeerProxyActivate() const override;
virtual bool isWaitingForLocalProxyActivate() const override;
virtual bool isTryingCandidates() const override;
virtual std::shared_ptr<TransportSession> createLocalCandidateSession() override;
virtual std::shared_ptr<TransportSession> createRemoteCandidateSession() override;
virtual void terminate(JinglePayload::Reason::Type reason) override;
private:
std::shared_ptr<JingleContentPayload> initialContent;
CryptoProvider* crypto;
State state;
std::shared_ptr<JingleFileTransferDescription> description;
std::shared_ptr<WriteBytestream> stream;
boost::uintmax_t receivedBytes;
IncrementalBytestreamHashCalculator* hashCalculator;
std::shared_ptr<Timer> waitOnHashTimer;
std::map<std::string, ByteArray> hashes;
FileTransferOptions options;
boost::signals2::scoped_connection writeStreamDataReceivedConnection;
boost::signals2::scoped_connection waitOnHashTimerTickedConnection;
boost::signals2::connection transferFinishedConnection;
};
}
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Swift