smb

type SMB2NegotiateRequestStruct struct {
	SMB2PacketStruct
	StructureSize   uint16   //2字节，客户端必须设置36
	DialectCount    uint16   `smb:"count:Dialects"` //2字节，必须大于0
	SecurityMode    uint16   //2字节，设置是否启用SMB签名
	Reserved        uint16   //2字节，必须设置0
	Capabilities    uint32   //4字节，如果客户端使用SMB3.x，必须使用SMB2_GLOBAL_CAP_*构造，否则设置为0
	ClientGuid      []byte   `smb:"fixed:16"` //16字节，客户端自身生成
	ClientStartTime uint64   //8字节，保留字段，归零
	Dialects        []uint16 //16位整数数组
}

type SMB2NegotiateResponseStruct struct {
	SMB2PacketStruct
	StructureSize        uint16            //2字节，客户端必须设置36
	SecurityMode         uint16            //2字节，设置是否启用SMB签名
	DialectRevision      uint16            //2字节，SMB协议号
	Reserved             uint16            //2字节，保留字段，归零
	ServerGuid           []byte            `smb:"fixed:16"` //16字节，服务器标识符
	Capabilities         uint32            //4字节，服务器协议作用
	MaxTransactSize      uint32            //4字节，客户端set_info请求缓冲区大小
	MaxReadSize          uint32            //4字节，服务器接受smb read请求最大长度
	MaxWriteSize         uint32            //4字节，服务器接受smb write请求最大长度
	SystemTime           uint64            //8字节，处理协商请求服务器系统时间
	ServerStartTime      uint64            //8字节，服务器启动时间
	SecurityBufferOffset uint16            `smb:"offset:SecurityBlob"` //2字节，smb2表头开始到安全缓存区的偏移量
	SecurityBufferLength uint16            `smb:"len:SecurityBlob"`    //2字节，安全缓冲区长度
	Reserved2            uint32            //4字节，协商上下文偏移量
	SecurityBlob         *gss.NegTokenInit //服务器返回二进制安全对象，遵循RFC2743标准
}

type SMB2PacketStruct struct {
	ProtocolId            []byte `smb:"fixed:4"` //4字节，协议标识符，必须设置为 0x424D53FE
	StructureSize         uint16 //2字节，协议结构大小，必修设置为64
	CreditCharge          uint16 //2字节，smb2.0.2发送方必须设置为0
	Status                uint32 //4字节，客户端设置0，服务端返回
	Command               uint16 //2字节，需要包含smb2有效命令
	CreditRequestResponse uint16 //2字节，标识客户端请求信用数
	Flags                 uint32 //4字节，标识如何处理请求
	NextCommand           uint32 //4字节，复合请求使用，不用归零
	MessageId             uint64 //8字节，消息唯一标识符
	Reserved              uint32 //2字节，保留字段，归零
	TreeId                uint32 //4字节，标识树连接，必须设置0
	SessionId             uint64 //8字节，会话唯一标识符，必须设置0
	Signature             []byte `smb:"fixed:16"` //16字节，消息未签名则设0
}

type SMB2SessionSetup2RequestStruct struct {
	SMB2PacketStruct
	StructureSize        uint16
	Flags                byte
	SecurityMode         byte
	Capabilities         uint32
	Channel              uint32 //4字节，保留字段，归零
	SecurityBufferOffset uint16 `smb:"offset:SecurityBlob"`
	SecurityBufferLength uint16 `smb:"len:SecurityBlob"`
	PreviousSessionID    uint64 //8字节，会话标识符。服务端用来标识客户端会话
	SecurityBlob         *gss.NegTokenResp
}

type SMB2SessionSetupRequestStruct struct {
	SMB2PacketStruct
	StructureSize        uint16
	Flags                byte
	SecurityMode         byte
	Capabilities         uint32
	Channel              uint32 //4字节，保留字段，归零
	SecurityBufferOffset uint16 `smb:"offset:SecurityBlob"`
	SecurityBufferLength uint16 `smb:"len:SecurityBlob"`
	PreviousSessionID    uint64 //8字节，会话标识符。服务端用来标识客户端会话
	SecurityBlob         *gss.NegTokenInit
}

type SMB2SessionSetupResponseStruct struct {
	SMB2PacketStruct
	StructureSize        uint16
	Flags                uint16
	SecurityBufferOffset uint16 `smb:"offset:SecurityBlob"`
	SecurityBufferLength uint16 `smb:"len:SecurityBlob"`
	SecurityBlob         *gss.NegTokenResp
}