diff options
Diffstat (limited to 'vendor/github.com/pkg/sftp/server_unix.go')
-rw-r--r-- | vendor/github.com/pkg/sftp/server_unix.go | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/vendor/github.com/pkg/sftp/server_unix.go b/vendor/github.com/pkg/sftp/server_unix.go new file mode 100644 index 0000000..8c3f0b4 --- /dev/null +++ b/vendor/github.com/pkg/sftp/server_unix.go @@ -0,0 +1,143 @@ +// +build darwin dragonfly freebsd !android,linux netbsd openbsd solaris +// +build cgo + +package sftp + +import ( + "fmt" + "os" + "path" + "syscall" + "time" +) + +func runLsTypeWord(dirent os.FileInfo) string { + // find first character, the type char + // b Block special file. + // c Character special file. + // d Directory. + // l Symbolic link. + // s Socket link. + // p FIFO. + // - Regular file. + tc := '-' + mode := dirent.Mode() + if (mode & os.ModeDir) != 0 { + tc = 'd' + } else if (mode & os.ModeDevice) != 0 { + tc = 'b' + if (mode & os.ModeCharDevice) != 0 { + tc = 'c' + } + } else if (mode & os.ModeSymlink) != 0 { + tc = 'l' + } else if (mode & os.ModeSocket) != 0 { + tc = 's' + } else if (mode & os.ModeNamedPipe) != 0 { + tc = 'p' + } + + // owner + orc := '-' + if (mode & 0400) != 0 { + orc = 'r' + } + owc := '-' + if (mode & 0200) != 0 { + owc = 'w' + } + oxc := '-' + ox := (mode & 0100) != 0 + setuid := (mode & os.ModeSetuid) != 0 + if ox && setuid { + oxc = 's' + } else if setuid { + oxc = 'S' + } else if ox { + oxc = 'x' + } + + // group + grc := '-' + if (mode & 040) != 0 { + grc = 'r' + } + gwc := '-' + if (mode & 020) != 0 { + gwc = 'w' + } + gxc := '-' + gx := (mode & 010) != 0 + setgid := (mode & os.ModeSetgid) != 0 + if gx && setgid { + gxc = 's' + } else if setgid { + gxc = 'S' + } else if gx { + gxc = 'x' + } + + // all / others + arc := '-' + if (mode & 04) != 0 { + arc = 'r' + } + awc := '-' + if (mode & 02) != 0 { + awc = 'w' + } + axc := '-' + ax := (mode & 01) != 0 + sticky := (mode & os.ModeSticky) != 0 + if ax && sticky { + axc = 't' + } else if sticky { + axc = 'T' + } else if ax { + axc = 'x' + } + + return fmt.Sprintf("%c%c%c%c%c%c%c%c%c%c", tc, orc, owc, oxc, grc, gwc, gxc, arc, awc, axc) +} + +func runLsStatt(dirname string, dirent os.FileInfo, statt *syscall.Stat_t) string { + // example from openssh sftp server: + // crw-rw-rw- 1 root wheel 0 Jul 31 20:52 ttyvd + // format: + // {directory / char device / etc}{rwxrwxrwx} {number of links} owner group size month day [time (this year) | year (otherwise)] name + + typeword := runLsTypeWord(dirent) + numLinks := statt.Nlink + uid := statt.Uid + gid := statt.Gid + username := fmt.Sprintf("%d", uid) + groupname := fmt.Sprintf("%d", gid) + // TODO FIXME: uid -> username, gid -> groupname lookup for ls -l format output + + mtime := dirent.ModTime() + monthStr := mtime.Month().String()[0:3] + day := mtime.Day() + year := mtime.Year() + now := time.Now() + isOld := mtime.Before(now.Add(-time.Hour * 24 * 365 / 2)) + + yearOrTime := fmt.Sprintf("%02d:%02d", mtime.Hour(), mtime.Minute()) + if isOld { + yearOrTime = fmt.Sprintf("%d", year) + } + + return fmt.Sprintf("%s %4d %-8s %-8s %8d %s %2d %5s %s", typeword, numLinks, username, groupname, dirent.Size(), monthStr, day, yearOrTime, dirent.Name()) +} + +// ls -l style output for a file, which is in the 'long output' section of a readdir response packet +// this is a very simple (lazy) implementation, just enough to look almost like openssh in a few basic cases +func runLs(dirname string, dirent os.FileInfo) string { + dsys := dirent.Sys() + if dsys == nil { + } else if statt, ok := dsys.(*syscall.Stat_t); !ok { + } else { + return runLsStatt(dirname, dirent, statt) + } + + return path.Join(dirname, dirent.Name()) +} |