33 lines
1.5 KiB
Go
33 lines
1.5 KiB
Go
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package mstypes
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import (
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"encoding/binary"
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"encoding/hex"
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"fmt"
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)
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// RPCSID implements https://msdn.microsoft.com/en-us/library/cc230364.aspx
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type RPCSID struct {
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Revision uint8 // An 8-bit unsigned integer that specifies the revision level of the SID. This value MUST be set to 0x01.
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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.
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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.
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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.
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}
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// String returns the string representation of the RPC_SID.
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func (s *RPCSID) String() string {
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var str string
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b := append(make([]byte, 2, 2), s.IdentifierAuthority[:]...)
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// For a strange reason this is read big endian: https://msdn.microsoft.com/en-us/library/dd302645.aspx
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i := binary.BigEndian.Uint64(b)
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if i >= 4294967296 {
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str = fmt.Sprintf("S-1-0x%s", hex.EncodeToString(s.IdentifierAuthority[:]))
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} else {
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str = fmt.Sprintf("S-1-%d", i)
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}
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for _, sub := range s.SubAuthority {
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str = fmt.Sprintf("%s-%d", str, sub)
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}
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return str
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}
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