74 lines
2.0 KiB
Go
74 lines
2.0 KiB
Go
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package pac
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import (
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"bytes"
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"gopkg.in/jcmturner/rpc.v1/mstypes"
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)
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// UPNDNSInfo implements https://msdn.microsoft.com/en-us/library/dd240468.aspx
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type UPNDNSInfo struct {
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UPNLength uint16 // An unsigned 16-bit integer in little-endian format that specifies the length, in bytes, of the UPN field.
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UPNOffset uint16 // An unsigned 16-bit integer in little-endian format that contains the offset to the beginning of the buffer, in bytes, from the beginning of the UPN_DNS_INFO structure.
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DNSDomainNameLength uint16
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DNSDomainNameOffset uint16
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Flags uint32
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UPN string
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DNSDomain string
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}
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const (
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upnNoUPNAttr = 31 // The user account object does not have the userPrincipalName attribute ([MS-ADA3] section 2.349) set. A UPN constructed by concatenating the user name with the DNS domain name of the account domain is provided.
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)
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// Unmarshal bytes into the UPN_DNSInfo struct
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func (k *UPNDNSInfo) Unmarshal(b []byte) (err error) {
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//The UPN_DNS_INFO structure is a simple structure that is not NDR-encoded.
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r := mstypes.NewReader(bytes.NewReader(b))
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k.UPNLength, err = r.Uint16()
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if err != nil {
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return
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}
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k.UPNOffset, err = r.Uint16()
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if err != nil {
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return
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}
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k.DNSDomainNameLength, err = r.Uint16()
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if err != nil {
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return
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}
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k.DNSDomainNameOffset, err = r.Uint16()
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if err != nil {
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return
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}
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k.Flags, err = r.Uint32()
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if err != nil {
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return
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}
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ub := mstypes.NewReader(bytes.NewReader(b[k.UPNOffset : k.UPNOffset+k.UPNLength]))
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db := mstypes.NewReader(bytes.NewReader(b[k.DNSDomainNameOffset : k.DNSDomainNameOffset+k.DNSDomainNameLength]))
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u := make([]rune, k.UPNLength/2, k.UPNLength/2)
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for i := 0; i < len(u); i++ {
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var r uint16
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r, err = ub.Uint16()
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if err != nil {
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return
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}
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u[i] = rune(r)
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}
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k.UPN = string(u)
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d := make([]rune, k.DNSDomainNameLength/2, k.DNSDomainNameLength/2)
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for i := 0; i < len(d); i++ {
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var r uint16
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r, err = db.Uint16()
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if err != nil {
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return
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}
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d[i] = rune(r)
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}
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k.DNSDomain = string(d)
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return
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}
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