| package mstypes |
| |
| import ( |
| "encoding/binary" |
| "encoding/hex" |
| "fmt" |
| "math" |
| "strings" |
| ) |
| |
| // RPCSID implements https://msdn.microsoft.com/en-us/library/cc230364.aspx |
| type RPCSID struct { |
| Revision uint8 // An 8-bit unsigned integer that specifies the revision level of the SID. This value MUST be set to 0x01. |
| SubAuthorityCount uint8 // An 8-bit unsigned integer that specifies the number of elements in the SubAuthority array. The maximum number of elements allowed is 15. |
| IdentifierAuthority [6]byte // An RPC_SID_IDENTIFIER_AUTHORITY structure that indicates the authority under which the SID was created. It describes the entity that created the SID. The Identifier Authority value {0,0,0,0,0,5} denotes SIDs created by the NT SID authority. |
| SubAuthority []uint32 `ndr:"conformant"` // A variable length array of unsigned 32-bit integers that uniquely identifies a principal relative to the IdentifierAuthority. Its length is determined by SubAuthorityCount. |
| } |
| |
| // String returns the string representation of the RPC_SID. |
| func (s *RPCSID) String() string { |
| var strb strings.Builder |
| strb.WriteString("S-1-") |
| |
| b := append(make([]byte, 2, 2), s.IdentifierAuthority[:]...) |
| // For a strange reason this is read big endian: https://msdn.microsoft.com/en-us/library/dd302645.aspx |
| i := binary.BigEndian.Uint64(b) |
| if i > math.MaxUint32 { |
| fmt.Fprintf(&strb, "0x%s", hex.EncodeToString(s.IdentifierAuthority[:])) |
| } else { |
| fmt.Fprintf(&strb, "%d", i) |
| } |
| for _, sub := range s.SubAuthority { |
| fmt.Fprintf(&strb, "-%d", sub) |
| } |
| return strb.String() |
| } |