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#ifndef AGENT_H
#define AGENT_H
#include <QtCore/QDateTime>
#include <QtCore/QDir>
#include <QtCore/QCryptographicHash>
#include <QtNetwork/QSslSocket>
#include "compressor.h"
class Agent : public QObject
{
Q_OBJECT
Q_FLAGS(SyncFlag SyncFlags)
public:
enum SyncFlag {
SYNC_NORMAL = 0,
SYNC_PULL = 0x1,
SYNC_READ_ONLY = 0x2,
SYNC_COMPRESS = 0x8
};
Q_DECLARE_FLAGS(SyncFlags, SyncFlag)
public:
explicit Agent(QSslSocket *socket, const QDir& dir, const QString& passwd, SyncFlags flags, QObject *parent = 0);
static const uint servicePort = 17451;
signals:
void finished();
protected:
#pragma pack(push)
#pragma pack(1)
enum MessageType {
MSG_HELLO = 0, //args: uint32 (proto_version) + string (client challenge)
MSG_HELLO_REPLY, //args: string (server challenge)
MSG_AUTH, //args: string (challenge response)
MSG_AUTH_REPLY, // args: uint8 (AuthResult)
MSG_SET_SUBROOT, //args: string
MSG_FILE_LIST, //args: FileListItem[]
MSG_FILE_ACTIONS_REPLY, //args: ActionItem[]
MSG_PULL_FILE, //args: string
MSG_PULL_FILE_REPLY, //args: file data
MSG_PUSH_FILE, //args: FileNameItem + file data
MSG_PUSH_FILE_METADATA, //args: FileListItem[]
MSG_DELETE_FILE, //args: string
MSG_BYE
};
struct MessageHeader {
quint32 msg;
quint32 len;
};
enum ProtoVersion {
PROTO_BAD = -1,
PROTO_0 = 0,
PROTO_1 = 1,
PROTO_CURRENT = PROTO_1
};
enum AuthResult {
AUTH_OK = 0,
AUTH_FAILED
};
enum FileType {
FILE_TYPE_NONE = 0,
FILE_TYPE_FILE,
FILE_TYPE_DIR
};
struct FileListItem {
quint64 size;
quint32 mtime;
quint16 name_len;
quint8 type;
char name[];
};
enum FileAction {
ACTION_NONE = 0,
ACTION_PULL_METADATA,
ACTION_PUSH_METADATA,
ACTION_PULL,
ACTION_PUSH,
ACTION_PULL_DELETE,
ACTION_PUSH_DELETE
};
struct ActionItem {
quint64 size;
quint32 mtime;
quint16 name_len;
quint8 type;
quint8 action;
char name[];
};
struct FileNameItem {
quint16 name_len;
char name[];
};
#pragma pack(pop)
protected:
class RemoteFileInfo {
public:
RemoteFileInfo();
RemoteFileInfo(const QString &name, FileType type, const QDateTime &mtime, qint64 size);
inline qint64 size() const {
return _size;
}
inline QDateTime lastModified() const {
return _mtime;
}
inline QString name() const {
return _name;
}
inline bool isDir() const {
return _type == FILE_TYPE_DIR;
}
private:
QString _name;
FileType _type;
QDateTime _mtime;
qint64 _size;
};
typedef QList<RemoteFileInfo> RemoteFileInfoList;
class ActionInfo {
public:
ActionInfo(FileAction action, const QFileInfo& fileInfo);
inline FileAction action() const {
return _action;
}
inline QFileInfo fileInfo() const {
return _info;
}
private:
FileAction _action;
QFileInfo _info;
};
typedef QList<ActionInfo> ActionInfoList;
class RemoteActionInfo {
public:
RemoteActionInfo(FileAction action, const QString& name, FileType type, const QDateTime& mtime, qint64 size);
inline FileAction action() const {
return _action;
}
inline RemoteFileInfo fileInfo() const {
return _info;
}
private:
FileAction _action;
RemoteFileInfo _info;
};
typedef QList<RemoteActionInfo> RemoteActionInfoList;
protected:
void sendMessage(MessageType msg, const QByteArray& data = QByteArray());
virtual void handleMessage(MessageType msg, const QByteArray& data) = 0;
int inBufRequiredData() const;
bool equalDateTime(const QDateTime& dt1, const QDateTime& dt2);
void setLocalFileDateTime(const QString &path, const QDateTime& dt);
QString wireToLocalPath(const QString& path);
QString localToWirePath(const QString& path);
QString wireParentPath(const QString& path);
QString findExistingCommonAncestor(const QString& path,
const QHash<QString, QFileInfo>& local_files,
const QHash<QString, RemoteFileInfo>& remote_files);
static bool lessPathDepthThan(const QString& s1, const QString& s2);
static bool morePathDepthThan(const QString& s1, const QString& s2);
QByteArray encodeHelloMessage(const QByteArray& client_challenge);
ProtoVersion decodeHelloMessage(const QByteArray& ba, QByteArray* client_challenge);
static QByteArray hmacSha1(const QByteArray& key, const QByteArray& message);
QByteArray generateChallenge();
QByteArray generateChallengeResponse(const QByteArray& server_challenge, const QByteArray& client_challenge);
QByteArray encodeAuthReply(AuthResult result);
AuthResult decodeAuthReply(const QByteArray& ba);
static QFileInfoList scanFiles(const QDir& dir);
QByteArray encodeFileInfoList(const QFileInfoList& list);
RemoteFileInfoList decodeFileInfoList(const QByteArray& ba);
QByteArray encodeActionInfoList(const ActionInfoList& list);
RemoteActionInfoList decodeActionInfoList(const QByteArray& ba);
static bool lessPathDepthThan(const ActionInfo& a1, const ActionInfo& a2);
static bool morePathDepthThan(const ActionInfo& a1, const ActionInfo& a2);
QByteArray encodeFileName(const QString& wire_path);
QString decodeFileName(const QByteArray& ba);
QByteArray encodeFileNameItem(const QString& wire_path);
QString decodeFileNameItem(const QByteArray& ba, int* length);
protected:
QDir _dir;
QString _subPath;
QString _passwd;
SyncFlags _flags;
QSslSocket *_socket;
QByteArray _inBuf;
private slots:
void handleDataAvailable();
void handleSslErrors(const QList<QSslError>& errors);
void handleDisconnected();
};
Q_DECLARE_OPERATORS_FOR_FLAGS(Agent::SyncFlags)
#endif // AGENT_H
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