/
s4u_delegation_info.go
54 lines (47 loc) · 1.55 KB
/
s4u_delegation_info.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
package pac
import (
"fmt"
"gopkg.in/jcmturner/gokrb5.v2/mstypes"
"gopkg.in/jcmturner/gokrb5.v2/ndr"
)
// S4UDelegationInfo implements https://msdn.microsoft.com/en-us/library/cc237944.aspx
type S4UDelegationInfo struct {
S4U2proxyTarget mstypes.RPCUnicodeString // The name of the principal to whom the application can forward the ticket.
TransitedListSize uint32
S4UTransitedServices []mstypes.RPCUnicodeString // List of all services that have been delegated through by this client and subsequent services or servers.. Size is value of TransitedListSize
}
// Unmarshal bytes into the S4UDelegationInfo struct
func (k *S4UDelegationInfo) Unmarshal(b []byte) error {
ch, _, p, err := ndr.ReadHeaders(&b)
if err != nil {
return fmt.Errorf("Error parsing byte stream headers: %v", err)
}
e := &ch.Endianness
//The next 4 bytes are an RPC unique pointer referent. We just skip these
p += 4
k.S4U2proxyTarget, err = mstypes.ReadRPCUnicodeString(&b, &p, e)
if err != nil {
return err
}
k.TransitedListSize = ndr.ReadUint32(&b, &p, e)
if k.TransitedListSize > 0 {
ts := make([]mstypes.RPCUnicodeString, k.TransitedListSize, k.TransitedListSize)
for i := range ts {
ts[i], err = mstypes.ReadRPCUnicodeString(&b, &p, e)
if err != nil {
return err
}
}
for i := range ts {
ts[i].UnmarshalString(&b, &p, e)
}
k.S4UTransitedServices = ts
}
//Check that there is only zero padding left
for _, v := range b[p:] {
if v != 0 {
return ndr.Malformed{EText: "Non-zero padding left over at end of data stream"}
}
}
return nil
}