64 lines
2.1 KiB
Go
64 lines
2.1 KiB
Go
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package sftp
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// Methods on the Request object to make working with the Flags bitmasks and
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// Attr(ibutes) byte blob easier. Use Pflags() when working with an Open/Write
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// request and AttrFlags() and Attributes() when working with SetStat requests.
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import "os"
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// FileOpenFlags defines Open and Write Flags. Correlate directly with with os.OpenFile flags
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// (https://golang.org/pkg/os/#pkg-constants).
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type FileOpenFlags struct {
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Read, Write, Append, Creat, Trunc, Excl bool
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}
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func newFileOpenFlags(flags uint32) FileOpenFlags {
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return FileOpenFlags{
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Read: flags&sshFxfRead != 0,
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Write: flags&sshFxfWrite != 0,
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Append: flags&sshFxfAppend != 0,
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Creat: flags&sshFxfCreat != 0,
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Trunc: flags&sshFxfTrunc != 0,
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Excl: flags&sshFxfExcl != 0,
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}
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}
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// Pflags converts the bitmap/uint32 from SFTP Open packet pflag values,
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// into a FileOpenFlags struct with booleans set for flags set in bitmap.
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func (r *Request) Pflags() FileOpenFlags {
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return newFileOpenFlags(r.Flags)
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}
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// FileAttrFlags that indicate whether SFTP file attributes were passed. When a flag is
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// true the corresponding attribute should be available from the FileStat
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// object returned by Attributes method. Used with SetStat.
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type FileAttrFlags struct {
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Size, UidGid, Permissions, Acmodtime bool
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}
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func newFileAttrFlags(flags uint32) FileAttrFlags {
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return FileAttrFlags{
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Size: (flags & sshFileXferAttrSize) != 0,
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UidGid: (flags & sshFileXferAttrUIDGID) != 0,
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Permissions: (flags & sshFileXferAttrPermissions) != 0,
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Acmodtime: (flags & sshFileXferAttrACmodTime) != 0,
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}
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}
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// AttrFlags returns a FileAttrFlags boolean struct based on the
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// bitmap/uint32 file attribute flags from the SFTP packaet.
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func (r *Request) AttrFlags() FileAttrFlags {
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return newFileAttrFlags(r.Flags)
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}
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// FileMode returns the Mode SFTP file attributes wrapped as os.FileMode
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func (a FileStat) FileMode() os.FileMode {
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return os.FileMode(a.Mode)
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}
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// Attributes parses file attributes byte blob and return them in a
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// FileStat object.
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func (r *Request) Attributes() *FileStat {
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fs, _ := unmarshalFileStat(r.Flags, r.Attrs)
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return fs
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}
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