Documentation
¶
Overview ¶
Package scp handles file uploads and downloads via SCP command. See https://web.archive.org/web/20170215184048/https://blogs.oracle.com/janp/entry/how_the_scp_protocol_works for the high-level protocol overview.
Authoritative source for the protocol is the source code for OpenSSH scp: https://github.com/openssh/openssh-portable/blob/add926dd1bbe3c4db06e27cab8ab0f9a3d00a0c2/scp.c
Index ¶
Constants ¶
const ( // OKByte is SCP OK message bytes OKByte = 0x0 // WarnByte tells that next goes a warning string WarnByte = 0x1 // ErrByte tells that next goes an error string ErrByte = 0x2 )
Variables ¶
This section is empty.
Functions ¶
Types ¶
type Command ¶
type Command interface {
// Execute processes SCP traffic
Execute(ch io.ReadWriter) error
// GetRemoteShellCmd returns a remote shell command that
// has to be executed on the remove server (handled by Teleport)
GetRemoteShellCmd() (string, error)
}
Command is an API that describes command operations
func CreateCommand ¶
CreateCommand creates and returns a new SCP command with specified configuration.
func CreateDownloadCommand ¶
CreateDownloadCommand configures and returns a command used to download a file
func CreateUploadCommand ¶
CreateUploadCommand configures and returns a command used to upload a file
type Config ¶
type Config struct {
// Flags is a set of SCP command line flags
Flags Flags
// User is a user who runs SCP command
User string
// AuditLog is AuditLog log
AuditLog events.AuditLogSessionStreamer
// ProgressWriter is a writer for printing the progress
// (used only on the client)
ProgressWriter io.Writer
// FileSystem is a source file system abstraction for the SCP command
FileSystem FileSystem
// RemoteLocation is a destination location of the file
RemoteLocation string
// RunOnServer is low level API flag that indicates that
// this command will be run on the server
RunOnServer bool
// Log optionally specifies the logger
Log log.FieldLogger
}
Config describes Command configuration settings
func (*Config) CheckAndSetDefaults ¶
CheckAndSetDefaults checks and sets default values
type FileInfo ¶
type FileInfo interface {
// IsDir returns true if a file is a directory
IsDir() bool
// ReadDir returns information of directory files
ReadDir() ([]FileInfo, error)
// GetName returns a file name
GetName() string
// GetPath returns a file path
GetPath() string
// GetModePerm returns file permissions
GetModePerm() os.FileMode
// GetSize returns file size
GetSize() int64
// GetModTime returns file modification time
GetModTime() time.Time
// GetAccessTime returns file last access time
GetAccessTime() time.Time
}
FileInfo provides access to file metadata
type FileSystem ¶
type FileSystem interface {
// IsDir returns true if a given file path is a directory
IsDir(path string) bool
// GetFileInfo returns FileInfo for a given file path
GetFileInfo(filePath string) (FileInfo, error)
// MkDir creates a directory
MkDir(path string, mode int) error
// OpenFile opens a file and returns its Reader
OpenFile(filePath string) (io.ReadCloser, error)
// CreateFile creates a new file
CreateFile(filePath string, length uint64) (io.WriteCloser, error)
// Chmod sets file permissions
Chmod(path string, mode int) error
// Chtimes sets file access and modification time
Chtimes(path string, atime, mtime time.Time) error
}
FileSystem is an interface that abstracts file system methods used in SCP command functions
type Flags ¶
type Flags struct {
// Source indicates upload mode
Source bool
// Sink indicates receive mode
Sink bool
// Verbose sets a logging mode
Verbose bool
// Target sets targeted files to be transferred
Target []string
// Recursive indicates recursive file transfer
Recursive bool
// RemoteAddr is a remote host address
RemoteAddr string
// LocalAddr is a local host address
LocalAddr string
// DirectoryMode indicates that a directory is being sent.
DirectoryMode bool
// PreserveAttrs preserves access and modification times
// from the original file
PreserveAttrs bool
}
Flags describes SCP command line flags
Source Files