a geicko-2 based round robin ranking system designed to test c++ battleship submissions
battleship.dunkirk.sh
dunkirk.sh
1package sftp
2
3// Methods on the Request object to make working with the Flags bitmasks and
4// Attr(ibutes) byte blob easier. Use Pflags() when working with an Open/Write
5// request and AttrFlags() and Attributes() when working with SetStat requests.
6
7// FileOpenFlags defines Open and Write Flags. Correlate directly with with os.OpenFile flags
8// (https://golang.org/pkg/os/#pkg-constants).
9type FileOpenFlags struct {
10 Read, Write, Append, Creat, Trunc, Excl bool
11}
12
13func newFileOpenFlags(flags uint32) FileOpenFlags {
14 return FileOpenFlags{
15 Read: flags&sshFxfRead != 0,
16 Write: flags&sshFxfWrite != 0,
17 Append: flags&sshFxfAppend != 0,
18 Creat: flags&sshFxfCreat != 0,
19 Trunc: flags&sshFxfTrunc != 0,
20 Excl: flags&sshFxfExcl != 0,
21 }
22}
23
24// Pflags converts the bitmap/uint32 from SFTP Open packet pflag values,
25// into a FileOpenFlags struct with booleans set for flags set in bitmap.
26func (r *Request) Pflags() FileOpenFlags {
27 return newFileOpenFlags(r.Flags)
28}
29
30// FileAttrFlags that indicate whether SFTP file attributes were passed. When a flag is
31// true the corresponding attribute should be available from the FileStat
32// object returned by Attributes method. Used with SetStat.
33type FileAttrFlags struct {
34 Size, UidGid, Permissions, Acmodtime bool
35}
36
37func newFileAttrFlags(flags uint32) FileAttrFlags {
38 return FileAttrFlags{
39 Size: (flags & sshFileXferAttrSize) != 0,
40 UidGid: (flags & sshFileXferAttrUIDGID) != 0,
41 Permissions: (flags & sshFileXferAttrPermissions) != 0,
42 Acmodtime: (flags & sshFileXferAttrACmodTime) != 0,
43 }
44}
45
46// AttrFlags returns a FileAttrFlags boolean struct based on the
47// bitmap/uint32 file attribute flags from the SFTP packaet.
48func (r *Request) AttrFlags() FileAttrFlags {
49 return newFileAttrFlags(r.Flags)
50}
51
52// Attributes parses file attributes byte blob and return them in a
53// FileStat object.
54func (r *Request) Attributes() *FileStat {
55 fs, _, _ := unmarshalFileStat(r.Flags, r.Attrs)
56 return fs
57}