cubefs
125 строк · 4.1 Кб
1package sarama
2
3import (
4"encoding/binary"
5"encoding/hex"
6
7"github.com/jcmturner/gokrb5/v8/credentials"
8"github.com/jcmturner/gokrb5/v8/gssapi"
9"github.com/jcmturner/gokrb5/v8/iana/keyusage"
10"github.com/jcmturner/gokrb5/v8/messages"
11"github.com/jcmturner/gokrb5/v8/types"
12)
13
14type KafkaGSSAPIHandler struct {
15client *MockKerberosClient
16badResponse bool
17badKeyChecksum bool
18}
19
20func (h *KafkaGSSAPIHandler) MockKafkaGSSAPI(buffer []byte) []byte {
21// Default payload used for verify
22err := h.client.Login() // Mock client construct keys when login
23if err != nil {
24return nil
25}
26if h.badResponse { // Returns trash
27return []byte{0x00, 0x00, 0x00, 0x01, 0xAD}
28}
29
30pack := gssapi.WrapToken{
31Flags: KRB5_USER_AUTH,
32EC: 12,
33RRC: 0,
34SndSeqNum: 3398292281,
35Payload: []byte{0x11, 0x00}, // 1100
36}
37// Compute checksum
38if h.badKeyChecksum {
39pack.CheckSum = []byte{0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}
40} else {
41err = pack.SetCheckSum(h.client.ASRep.DecryptedEncPart.Key, keyusage.GSSAPI_ACCEPTOR_SEAL)
42if err != nil {
43return nil
44}
45}
46
47packBytes, err := pack.Marshal()
48if err != nil {
49return nil
50}
51lenBytes := len(packBytes)
52response := make([]byte, lenBytes+4)
53copy(response[4:], packBytes)
54binary.BigEndian.PutUint32(response, uint32(lenBytes))
55return response
56}
57
58type MockKerberosClient struct {
59asRepBytes string
60ASRep messages.ASRep
61credentials *credentials.Credentials
62mockError error
63errorStage string
64}
65
66func (c *MockKerberosClient) Login() error {
67if c.errorStage == "login" && c.mockError != nil {
68return c.mockError
69}
70c.asRepBytes = "6b8202e9308202e5a003020105a10302010ba22b30293027a103020113a220041e301c301aa003020112a1131b114" +
71"558414d504c452e434f4d636c69656e74a30d1b0b4558414d504c452e434f4da4133011a003020101a10a30081b06636c69656e7" +
72"4a5820156618201523082014ea003020105a10d1b0b4558414d504c452e434f4da220301ea003020102a11730151b066b7262746" +
73"7741b0b4558414d504c452e434f4da382011430820110a003020112a103020101a28201020481ffdb9891175d106818e61008c51" +
74"d0b3462bca92f3bf9d4cfa82de4c4d7aff9994ec87c573e3a3d54dcb2bb79618c76f2bf4a3d006f90d5bdbd049bc18f48be39203" +
75"549ca02acaf63f292b12404f9b74c34b83687119d8f56552ccc0c50ebee2a53bb114c1b4619bb1d5d31f0f49b4d40a08a9b4c046" +
76"2e1398d0b648be1c0e50c552ad16e1d8d8e74263dd0bf0ec591e4797dfd40a9a1be4ae830d03a306e053fd7586fef84ffc5e4a83" +
77"7c3122bf3e6a40fe87e84019f6283634461b955712b44a5f7386c278bff94ec2c2dc0403247e29c2450e853471ceababf9b8911f" +
78"997f2e3010b046d2c49eb438afb0f4c210821e80d4ffa4c9521eb895dcd68610b3feaa682012c30820128a003020112a282011f0" +
79"482011bce73cbce3f1dd17661c412005f0f2257c756fe8e98ff97e6ec24b7bab66e5fd3a3827aeeae4757af0c6e892948122d8b2" +
80"03c8df48df0ef5d142d0e416d688f11daa0fcd63d96bdd431d02b8e951c664eeff286a2be62383d274a04016d5f0e141da58cb86" +
81"331de64063062f4f885e8e9ce5b181ca2fdc67897c5995e0ae1ae0c171a64493ff7bd91bc6d89cd4fce1e2b3ea0a10e34b0d5eda" +
82"aa38ee727b50c5632ed1d2f2b457908e616178d0d80b72af209fb8ac9dbaa1768fa45931392b36b6d8c12400f8ded2efaa0654d0" +
83"da1db966e8b5aab4706c800f95d559664646041fdb38b411c62fc0fbe0d25083a28562b0e1c8df16e62e9d5626b0addee489835f" +
84"eedb0f26c05baa596b69b17f47920aa64b29dc77cfcc97ba47885"
85apRepBytes, err := hex.DecodeString(c.asRepBytes)
86if err != nil {
87return err
88}
89err = c.ASRep.Unmarshal(apRepBytes)
90if err != nil {
91return err
92}
93c.credentials = credentials.New("client", "EXAMPLE.COM").WithPassword("qwerty")
94_, err = c.ASRep.DecryptEncPart(c.credentials)
95if err != nil {
96return err
97}
98return nil
99}
100
101func (c *MockKerberosClient) GetServiceTicket(spn string) (messages.Ticket, types.EncryptionKey, error) {
102if c.errorStage == "service_ticket" && c.mockError != nil {
103return messages.Ticket{}, types.EncryptionKey{}, c.mockError
104}
105return c.ASRep.Ticket, c.ASRep.DecryptedEncPart.Key, nil
106}
107
108func (c *MockKerberosClient) Domain() string {
109return "EXAMPLE.COM"
110}
111
112func (c *MockKerberosClient) CName() types.PrincipalName {
113p := types.PrincipalName{
114NameType: KRB5_USER_AUTH,
115NameString: []string{
116"kafka",
117"kafka",
118},
119}
120return p
121}
122
123func (c *MockKerberosClient) Destroy() {
124// Do nothing.
125}
126