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gitea/vendor/github.com/Azure/go-ntlmssp/varfield.go

40 lines
912 B

package ntlmssp
import (
"errors"
)
type varField struct {
Len uint16
MaxLen uint16
BufferOffset uint32
}
func (f varField) ReadFrom(buffer []byte) ([]byte, error) {
if len(buffer) < int(f.BufferOffset+uint32(f.Len)) {
return nil, errors.New("Error reading data, varField extends beyond buffer")
}
return buffer[f.BufferOffset : f.BufferOffset+uint32(f.Len)], nil
}
func (f varField) ReadStringFrom(buffer []byte, unicode bool) (string, error) {
d, err := f.ReadFrom(buffer)
if err != nil {
return "", err
}
if unicode { // UTF-16LE encoding scheme
return fromUnicode(d)
}
// OEM encoding, close enough to ASCII, since no code page is specified
return string(d), err
}
func newVarField(ptr *int, fieldsize int) varField {
f := varField{
Len: uint16(fieldsize),
MaxLen: uint16(fieldsize),
BufferOffset: uint32(*ptr),
}
*ptr += fieldsize
return f
}