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package sftp
// ssh_FXP_ATTRS support
// see http://tools.ietf.org/html/draft-ietf-secsh-filexfer-02#section-5
import (
"os"
"time"
)
const (
sshFileXferAttrSize = 0x00000001
sshFileXferAttrUIDGID = 0x00000002
sshFileXferAttrPermissions = 0x00000004
sshFileXferAttrACmodTime = 0x00000008
sshFileXferAttrExtended = 0x80000000
sshFileXferAttrAll = sshFileXferAttrSize | sshFileXferAttrUIDGID | sshFileXferAttrPermissions |
sshFileXferAttrACmodTime | sshFileXferAttrExtended
)
// fileInfo is an artificial type designed to satisfy os.FileInfo.
type fileInfo struct {
name string
stat *FileStat
}
// Name returns the base name of the file.
func (fi *fileInfo) Name() string { return fi.name }
// Size returns the length in bytes for regular files; system-dependent for others.
func (fi *fileInfo) Size() int64 { return int64(fi.stat.Size) }
// Mode returns file mode bits.
func (fi *fileInfo) Mode() os.FileMode { return toFileMode(fi.stat.Mode) }
// ModTime returns the last modification time of the file.
func (fi *fileInfo) ModTime() time.Time { return time.Unix(int64(fi.stat.Mtime), 0) }
// IsDir returns true if the file is a directory.
func (fi *fileInfo) IsDir() bool { return fi.Mode().IsDir() }
func (fi *fileInfo) Sys() interface{} { return fi.stat }
// FileStat holds the original unmarshalled values from a call to READDIR or
// *STAT. It is exported for the purposes of accessing the raw values via
// os.FileInfo.Sys(). It is also used server side to store the unmarshalled
// values for SetStat.
type FileStat struct {
Size uint64
Mode uint32
Mtime uint32
Atime uint32
UID uint32
GID uint32
Extended []StatExtended
}
// StatExtended contains additional, extended information for a FileStat.
type StatExtended struct {
ExtType string
ExtData string
}
func fileInfoFromStat(stat *FileStat, name string) os.FileInfo {
return &fileInfo{
name: name,
stat: stat,
}
}
func fileStatFromInfo(fi os.FileInfo) (uint32, *FileStat) {
mtime := fi.ModTime().Unix()
atime := mtime
var flags uint32 = sshFileXferAttrSize |
sshFileXferAttrPermissions |
sshFileXferAttrACmodTime
fileStat := &FileStat{
Size: uint64(fi.Size()),
Mode: fromFileMode(fi.Mode()),
Mtime: uint32(mtime),
Atime: uint32(atime),
}
// os specific file stat decoding
fileStatFromInfoOs(fi, &flags, fileStat)
return flags, fileStat
}
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