a geicko-2 based round robin ranking system designed to test c++ battleship submissions
battleship.dunkirk.sh
dunkirk.sh
1package sftp
2
3import (
4 "errors"
5 "fmt"
6 "os"
7 "os/user"
8 "strconv"
9 "time"
10
11 sshfx "github.com/pkg/sftp/internal/encoding/ssh/filexfer"
12)
13
14func lsFormatID(id uint32) string {
15 return strconv.FormatUint(uint64(id), 10)
16}
17
18type osIDLookup struct{}
19
20func (osIDLookup) Filelist(*Request) (ListerAt, error) {
21 return nil, errors.New("unimplemented stub")
22}
23
24func (osIDLookup) LookupUserName(uid string) string {
25 u, err := user.LookupId(uid)
26 if err != nil {
27 return uid
28 }
29
30 return u.Username
31}
32
33func (osIDLookup) LookupGroupName(gid string) string {
34 g, err := user.LookupGroupId(gid)
35 if err != nil {
36 return gid
37 }
38
39 return g.Name
40}
41
42// runLs formats the FileInfo as per `ls -l` style, which is in the 'longname' field of a SSH_FXP_NAME entry.
43// This is a fairly simple implementation, just enough to look close to openssh in simple cases.
44func runLs(idLookup NameLookupFileLister, dirent os.FileInfo) string {
45 // example from openssh sftp server:
46 // crw-rw-rw- 1 root wheel 0 Jul 31 20:52 ttyvd
47 // format:
48 // {directory / char device / etc}{rwxrwxrwx} {number of links} owner group size month day [time (this year) | year (otherwise)] name
49
50 symPerms := sshfx.FileMode(fromFileMode(dirent.Mode())).String()
51
52 var numLinks uint64 = 1
53 uid, gid := "0", "0"
54
55 switch sys := dirent.Sys().(type) {
56 case *sshfx.Attributes:
57 uid = lsFormatID(sys.UID)
58 gid = lsFormatID(sys.GID)
59 case *FileStat:
60 uid = lsFormatID(sys.UID)
61 gid = lsFormatID(sys.GID)
62 default:
63 if fiExt, ok := dirent.(FileInfoUidGid); ok {
64 uid = lsFormatID(fiExt.Uid())
65 gid = lsFormatID(fiExt.Gid())
66
67 break
68 }
69
70 numLinks, uid, gid = lsLinksUIDGID(dirent)
71 }
72
73 if idLookup != nil {
74 uid, gid = idLookup.LookupUserName(uid), idLookup.LookupGroupName(gid)
75 }
76
77 mtime := dirent.ModTime()
78 date := mtime.Format("Jan 2")
79
80 var yearOrTime string
81 if mtime.Before(time.Now().AddDate(0, -6, 0)) {
82 yearOrTime = mtime.Format("2006")
83 } else {
84 yearOrTime = mtime.Format("15:04")
85 }
86
87 return fmt.Sprintf("%s %4d %-8s %-8s %8d %s %5s %s", symPerms, numLinks, uid, gid, dirent.Size(), date, yearOrTime, dirent.Name())
88}