git.r.bdr.sh - rbdr/mobius/blob - hotline/access.go

   1 package hotline
   2
   3 import (
   4         "encoding/binary"
   5         "math/big"
   6 )
   7
   8 const (
   9         accessAlwaysAllow = -1 // Some transactions are always allowed
  10
  11         // File System Maintenance
  12         accessDeleteFile   = 0
  13         accessUploadFile   = 1
  14         accessDownloadFile = 2 // Can Download Files
  15         accessRenameFile   = 3
  16         accessMoveFile     = 4
  17         accessCreateFolder = 5
  18         accessDeleteFolder = 6
  19         accessRenameFolder = 7
  20         accessMoveFolder   = 8
  21         accessReadChat     = 9
  22         accessSendChat     = 10
  23         accessOpenChat     = 11
  24         // accessCloseChat        = 12 // Documented but unused?
  25         // accessShowInList       = 13 // Documented but unused?
  26         accessCreateUser = 14
  27         accessDeleteUser = 15
  28         accessOpenUser   = 16
  29         accessModifyUser = 17
  30         // accessChangeOwnPass    = 18 // Documented but unused?
  31         // accessSendPrivMsg      = 19 // This doesn't do what it seems like it should do. TODO: Investigate
  32         accessNewsReadArt    = 20
  33         accessNewsPostArt    = 21
  34         accessDisconUser     = 22 // Toggles red user name in user list
  35         accessCannotBeDiscon = 23
  36         accessGetClientInfo  = 24
  37         // accessUploadAnywhere   = 25
  38         // accessAnyName          = 26
  39         // accessNoAgreement      = 27
  40         // accessSetFileComment   = 28
  41         // accessSetFolderComment = 29
  42         // accessViewDropBoxes    = 30
  43         accessMakeAlias     = 31
  44         accessBroadcast     = 32
  45         accessNewsDeleteArt = 33
  46         accessNewsCreateCat = 34
  47         // accessNewsDeleteCat    = 35
  48         accessNewsCreateFldr = 36
  49         // accessNewsDeleteFldr   = 37
  50 )
  51
  52 type accessBitmap [8]byte
  53
  54 func (bits *accessBitmap) Set(i int) {
  55         bits[i/8] |= 1 << uint(7-i%8)
  56 }
  57
  58 // authorize checks if 64 bit access slice contain has accessBit set
  59 // TODO: refactor to use accessBitmap type
  60 func authorize(access *[]byte, accessBit int) bool {
  61         if accessBit == accessAlwaysAllow {
  62                 return true
  63         }
  64         bits := big.NewInt(int64(binary.BigEndian.Uint64(*access)))
  65
  66         return bits.Bit(63-accessBit) == 1
  67 }