smb2

package module
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 Go to latest Published: Jul 29, 2020 License: BSD-2-Clause Imports: 32 Imported by: 0

README

smb2

Build Status GoDoc

Description

SMB2/3 client implementation.

Installation

go get github.com/joshartman/go-smb2

Documentation

http://godoc.org/github.com/joshartman/go-smb2

I have cloned this repo as I was to make sure bugs get fixed. Cloned from github.com/hirochachacha/go-smb2

Documentation

Overview

Package smb2 implements the SMB2/3 client in [MS-SMB2].

https://msdn.microsoft.com/en-us/library/cc246482.aspx

This package doesn't support CAP_UNIX extension. Symlink is supported by FSCTL_SET_REPARSE_POINT and FSCTL_GET_REPARSE_POINT. The symlink-following algorithm is explained in 2.2.2.2.1 and 2.2.2.2.1.1.

https://msdn.microsoft.com/en-us/library/cc246542.aspx

Path restrictions: 

You cannot use slash as a separator, use backslash instead.
You cannot use leading backslash in pathname. (except mount path and symlink target)

Supported features and protocol versions are declared in feature.go.

Example 
conn, err := net.Dial("tcp", "localhost:445")
if err != nil {
	panic(err)
}
defer conn.Close()

d := &smb2.Dialer{
	Initiator: &smb2.NTLMInitiator{
		User:     "Guest",
		Password: "",
		Domain:   "MicrosoftAccount",
	},
}

c, err := d.Dial(conn)
if err != nil {
	panic(err)
}
defer c.Logoff()

fs, err := c.Mount(`\\localhost\share`)
if err != nil {
	panic(err)
}
defer fs.Umount()

f, err := fs.Create("hello.txt")
if err != nil {
	panic(err)
}
defer fs.Remove("hello.txt")
defer f.Close()

_, err = f.Write([]byte("Hello world!"))
if err != nil {
	panic(err)
}

_, err = f.Seek(0, io.SeekStart)
if err != nil {
	panic(err)
}

bs, err := ioutil.ReadAll(f)
if err != nil {
	panic(err)
}

fmt.Println(string(bs))

// Hello world!

Output:

Index

Examples

Constants

View Source 
const MaxReadSizeLimit = 0x100000

MaxReadSizeLimit limits maxReadSize from negotiate data

View Source 
const PathSeparator = '\\'

Variables

This section is empty.

Functions

func IsExist 

func IsExist(err error) bool

func IsNotExist 

func IsNotExist(err error) bool

func IsPathSeparator 

func IsPathSeparator(c uint8) bool

func IsPermission 

func IsPermission(err error) bool

Types

type Client 

type Client struct {
	// contains filtered or unexported fields
}

Client represents a SMB session.

func (*Client) Logoff 

func (c *Client) Logoff() error

Logoff invalidates the current SMB session.

func (*Client) Mount 

func (c *Client) Mount(path string) (*RemoteFileSystem, error)

Mount connects to a SMB tree.

func (*Client) WithContext 

func (c *Client) WithContext(ctx context.Context) *Client

type Dialer 

type Dialer struct {
	MaxCreditBalance uint16 // if it's zero, clientMaxCreditBalance is used. (See feature.go for more details)
	Negotiator       Negotiator
	Initiator        Initiator
}

Dialer contains options for func (*Dialer) Dial.

func (*Dialer) Dial 

func (d *Dialer) Dial(tcpConn net.Conn) (*Client, error)

Dial performs negotiation and authentication. It returns a client. It doesn't support NetBIOS transport.

func (*Dialer) DialContext 

func (d *Dialer) DialContext(tcpConn net.Conn, ctx context.Context) (*Client, error)

type FileFsInfo 

type FileFsInfo interface {
	BlockSize() uint64
	FragmentSize() uint64
	TotalBlockCount() uint64
	FreeBlockCount() uint64
	AvailableBlockCount() uint64
}

type Initiator 

type Initiator interface {
	// contains filtered or unexported methods
}

type InternalError 

type InternalError struct {
	Message string
}

InternalError represents internal error.

func (*InternalError) Error 

func (err *InternalError) Error() string

type InvalidResponseError 

type InvalidResponseError struct {
	Message string
}

InvalidResponseError represents a data sent by the server is corrupted or unexpected.

func (*InvalidResponseError) Error 

func (err *InvalidResponseError) Error() string

type MultipleError 

type MultipleError []error

func (MultipleError) Error 

func (err MultipleError) Error() string

type NTLMInitiator 

type NTLMInitiator struct {
	User        string
	Password    string
	Hash        []byte
	Domain      string
	Workstation string
	TargetSPN   string
	// contains filtered or unexported fields
}

NTLMInitiator implements session-setup through NTLMv2. It doesn't support NTLMv1. You can use Hash instead of Password.

type Negotiator 

type Negotiator struct {
	RequireMessageSigning bool     // enforce signing?
	ClientGuid            [16]byte // if it's zero, generated by crypto/rand.
	SpecifiedDialect      uint16   // if it's zero, clientDialects is used. (See feature.go for more details)
}

Negotiator contains options for func (*Dialer) Dial.

type RemoteFile 

type RemoteFile struct {
	// contains filtered or unexported fields
}

func (*RemoteFile) Chmod 

func (f *RemoteFile) Chmod(mode os.FileMode) error

func (*RemoteFile) Close 

func (f *RemoteFile) Close() error

func (*RemoteFile) Name 

func (f *RemoteFile) Name() string

func (*RemoteFile) Read 

func (f *RemoteFile) Read(b []byte) (n int, err error)

func (*RemoteFile) ReadAt 

func (f *RemoteFile) ReadAt(b []byte, off int64) (n int, err error)

ReadAt implements io.ReaderAt.

func (*RemoteFile) ReadFrom 

func (f *RemoteFile) ReadFrom(r io.Reader) (n int64, err error)

ReadFrom implements io.ReadFrom. If r is *RemoteFile on the same *RemoteFileSystem as f, it invokes server-side copy.

func (*RemoteFile) Readdir 

func (f *RemoteFile) Readdir(n int) (fi []os.FileInfo, err error)

func (*RemoteFile) Readdirnames 

func (f *RemoteFile) Readdirnames(n int) (names []string, err error)

func (*RemoteFile) Seek 

func (f *RemoteFile) Seek(offset int64, whence int) (ret int64, err error)

Seek implements io.Seeker.

func (*RemoteFile) Stat 

func (f *RemoteFile) Stat() (os.FileInfo, error)

func (*RemoteFile) Statfs 

func (f *RemoteFile) Statfs() (FileFsInfo, error)

func (*RemoteFile) Sync 

func (f *RemoteFile) Sync() (err error)

func (*RemoteFile) Truncate 

func (f *RemoteFile) Truncate(size int64) error

func (*RemoteFile) WithContext 

func (f *RemoteFile) WithContext(ctx context.Context) *RemoteFile

func (*RemoteFile) Write 

func (f *RemoteFile) Write(b []byte) (n int, err error)

func (*RemoteFile) WriteAt 

func (f *RemoteFile) WriteAt(b []byte, off int64) (n int, err error)

WriteAt implements io.WriterAt.

func (*RemoteFile) WriteString 

func (f *RemoteFile) WriteString(s string) (n int, err error)

func (*RemoteFile) WriteTo 

func (f *RemoteFile) WriteTo(w io.Writer) (n int64, err error)

WriteTo implements io.WriteTo. If w is *RemoteFile on the same *RemoteFileSystem as f, it invokes server-side copy.

type RemoteFileStat 

type RemoteFileStat struct {
	CreationTime   time.Time
	LastAccessTime time.Time
	LastWriteTime  time.Time
	ChangeTime     time.Time
	EndOfFile      int64
	AllocationSize int64
	FileAttributes uint32
	FileName       string
}

func (*RemoteFileStat) IsDir 

func (fs *RemoteFileStat) IsDir() bool

func (*RemoteFileStat) ModTime 

func (fs *RemoteFileStat) ModTime() time.Time

func (*RemoteFileStat) Mode 

func (fs *RemoteFileStat) Mode() os.FileMode

func (*RemoteFileStat) Name 

func (fs *RemoteFileStat) Name() string

func (*RemoteFileStat) Size 

func (fs *RemoteFileStat) Size() int64

func (*RemoteFileStat) Sys 

func (fs *RemoteFileStat) Sys() interface{}

type RemoteFileSystem 

type RemoteFileSystem struct {
	// contains filtered or unexported fields
}

RemoteFileSystem represents a SMB tree connection with VFS interface.

func (*RemoteFileSystem) Chmod 

func (fs *RemoteFileSystem) Chmod(name string, mode os.FileMode) error

func (*RemoteFileSystem) Chtimes 

func (fs *RemoteFileSystem) Chtimes(name string, atime time.Time, mtime time.Time) error

func (*RemoteFileSystem) Create 

func (fs *RemoteFileSystem) Create(name string) (*RemoteFile, error)

func (*RemoteFileSystem) Lstat 

func (fs *RemoteFileSystem) Lstat(name string) (os.FileInfo, error)

func (*RemoteFileSystem) Mkdir 

func (fs *RemoteFileSystem) Mkdir(name string, perm os.FileMode) error

func (*RemoteFileSystem) MkdirAll 

func (fs *RemoteFileSystem) MkdirAll(path string, perm os.FileMode) error

MkdirAll mimics os.MkdirAll

func (*RemoteFileSystem) Open 

func (fs *RemoteFileSystem) Open(name string) (*RemoteFile, error)

func (*RemoteFileSystem) OpenFile 

func (fs *RemoteFileSystem) OpenFile(name string, flag int, perm os.FileMode) (*RemoteFile, error)

func (*RemoteFileSystem) ReadDir 

func (fs *RemoteFileSystem) ReadDir(dirname string) ([]os.FileInfo, error)

func (*RemoteFileSystem) ReadFile 

func (fs *RemoteFileSystem) ReadFile(filename string) ([]byte, error)
func (fs *RemoteFileSystem) Readlink(name string) (string, error)

func (*RemoteFileSystem) Remove 

func (fs *RemoteFileSystem) Remove(name string) error

func (*RemoteFileSystem) RemoveAll 

func (fs *RemoteFileSystem) RemoveAll(path string) error

RemoveAll removes path and any children it contains. It removes everything it can but returns the first error it encounters. If the path does not exist, RemoveAll returns nil (no error).

func (*RemoteFileSystem) Rename 

func (fs *RemoteFileSystem) Rename(oldpath, newpath string) error

func (*RemoteFileSystem) Stat 

func (fs *RemoteFileSystem) Stat(name string) (os.FileInfo, error)

func (*RemoteFileSystem) Statfs 

func (fs *RemoteFileSystem) Statfs(name string) (FileFsInfo, error)
func (fs *RemoteFileSystem) Symlink(target, linkpath string) error

Symlink mimics os.Symlink. This API should work on latest Windows and latest MacOS. However it may not work on Linux because Samba doesn't support reparse point well. Also there is a restriction on target pathname. Generally, a pathname begins with leading backslash (e.g `\dir\name`) can be interpreted as two ways. On windows, it is evaluated as a relative path, on other systems, it is evaluated as an absolute path. This implementation always assumes that format is absolute path. So, if you know the target server is Windows, you should avoid that format. If you want to use an absolute target path on windows, you can use // `C:\dir\name` format instead.

func (*RemoteFileSystem) Truncate 

func (fs *RemoteFileSystem) Truncate(name string, size int64) error

func (*RemoteFileSystem) Umount 

func (fs *RemoteFileSystem) Umount() error

Umount disconects the current SMB tree.

func (*RemoteFileSystem) WithContext 

func (fs *RemoteFileSystem) WithContext(ctx context.Context) *RemoteFileSystem

func (*RemoteFileSystem) WriteFile 

func (fs *RemoteFileSystem) WriteFile(filename string, data []byte, perm os.FileMode) error

type ResponseError 

type ResponseError struct {
	Code uint32 // NTSTATUS
	// contains filtered or unexported fields
}

ResponseError represents a error with a nt status code sent by the server. The NTSTATUS is defined in [MS-ERREF]. https://msdn.microsoft.com/en-au/library/cc704588.aspx

func (*ResponseError) Error 

func (err *ResponseError) Error() string

type TransportError 

type TransportError struct {
	Err error
}

TransportError represents a error come from net.Conn layer.

func (*TransportError) Error 

func (err *TransportError) Error() string

Source Files

View all Source files

Directories

Path Synopsis
internal
crypto/ccm
crypto/cmac
erref
ntlm
smb2
spnego

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