README
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TFTP-Server Implentierung in Go
Gibt zwar schon einige, aber ich wollte mal ein Protokol selbst umsetzen und dabei gleich mal Go ausprobieren.
Die Implentierung konzentriert sich auf den Server und sollte ACLs bereistellen mit denen man eine Client IP einem Verzeichnis zuordnen kann.
Der Server funktioniert soweit. Was noch fehlt ist das Retransmit von nicht geACKten Paketen und eine Implementierung von Timeouts.
Status: Work in Progress
- WRQ (mode netascii entfernt \r)
- RRQ ohne Beachtung von mide netascii
- ACL für RRQ und WRQ
RFCs
- RFC1350
- RFC2348
- RFC2348
Documentation
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Overview ¶
Package tftp implents a TFTP server RFC1350 and also RFC2348 and RFC2348 It also has a simple ACL for clients to allow or disallow Read/Write requests and give an own directory for Read/Write request
Index ¶
- func ListenAndServe(addr, rootdir string) error
- type ACL
- type Client
- type TServer
- func (ts *TServer) AddACL(hostornet string, write, read bool, writedir, readdir string) error
- func (ts *TServer) AddACLStruct(hostornet string, acl *ACL) error
- func (ts TServer) CheckClient(opcode uint16, caddr *net.UDPAddr) (bool, string)
- func (ts *TServer) DelACL(hostornet string) error
- func (ts *TServer) Serve() error
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
func ListenAndServe ¶
ListenAndServe starts UDP socket and waits for client first packet
Types ¶
type Client ¶
type Client struct {
Addr *net.UDPAddr
Conn *net.UDPConn
BlockSize int
TimeOut int
Tsize uint16
BlockNumber uint16
Options map[string][]byte
Databuf []byte
ReadDir string
WriteDir string
// contains filtered or unexported fields
}
Client holds info from one client
func (*Client) NewTransfer ¶
NewTransfer starts a new transfer from client WRQ
type TServer ¶
type TServer struct {
ACLs map[*net.IPNet]*ACL
DefWrite bool
DefWriteDir string
DefRead bool
DefReadDir string
// contains filtered or unexported fields
}
TServer struct holds info from Server
func NewServer ¶
func NewServer(netw, addr, rootdir, defaultreaddir, defaultwritedir string, defread, defwrite bool) (*TServer, error)
NewServer initalize an TServer
func (*TServer) AddACLStruct ¶
AddACLStruct adds acl struct directly
func (TServer) CheckClient ¶
CheckClient checks client address against ACL-map returns true when client is allowed false otherwise
Source Files
Directories