/
ciam.go
141 lines (131 loc) · 4.23 KB
/
ciam.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
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
package adaptor
import (
"crypto/hmac"
"crypto/sha256"
"encoding/base64"
"errors"
"fmt"
"github.com/adinandradrs/cezbek-engine/internal/apps"
"github.com/adinandradrs/cezbek-engine/internal/model"
"github.com/aws/aws-sdk-go/aws"
cognito "github.com/aws/aws-sdk-go/service/cognitoidentityprovider"
"github.com/golang-jwt/jwt"
_ "github.com/google/uuid"
"github.com/lestrrat-go/jwx/jwk"
"go.uber.org/zap"
)
type CiamWatcher interface {
JwtInfo(t string) (map[string]interface{}, *model.TechnicalError)
OnboardPartner(m model.CiamOnboardPartnerRequest) (*model.CiamUserResponse, *model.TechnicalError)
Authenticate(m model.CiamAuthenticationRequest) (*model.CiamAuthenticationResponse, *model.TechnicalError)
}
type (
Cognito struct {
Provider *cognito.CognitoIdentityProvider
UserPool string
ClientId string
Scrt string
Region string
JWK string
Logger *zap.Logger
}
)
func NewCognito(c Cognito) CiamWatcher {
return &c
}
func (c *Cognito) pubKey(token *jwt.Token, url string) (pkey interface{}, err error) {
kid, exists := token.Header["kid"].(string)
if !exists {
return nil, errors.New("kid header does not exists")
}
kset, err := jwk.ParseString(url)
if err != nil {
return nil, fmt.Errorf("failed to retrieve JWK")
}
keys, _ := kset.LookupKeyID(kid)
err = keys.Raw(&pkey)
if err != nil {
return nil, fmt.Errorf("parsing error")
}
return pkey, nil
}
func (c *Cognito) parseToken(t string) (*jwt.Token, error) {
return jwt.Parse(t, func(token *jwt.Token) (interface{}, error) {
if _, result := token.Method.(*jwt.SigningMethodRSA); !result {
return nil, fmt.Errorf("unexpected signing method: %v", token.Header["alg"])
}
return c.pubKey(token, c.JWK)
})
}
func (c *Cognito) secretHash(u string) string {
mac := hmac.New(sha256.New, []byte(c.Scrt))
mac.Write([]byte(u + c.ClientId))
return base64.StdEncoding.EncodeToString(mac.Sum(nil))
}
func (c *Cognito) JwtInfo(t string) (map[string]interface{}, *model.TechnicalError) {
token, err := c.parseToken(t)
if err != nil {
return nil, apps.Exception("failed to get JWT Info from token", err, zap.String("token", t), c.Logger)
}
claims, result := token.Claims.(jwt.MapClaims)
if result && token.Valid {
return claims, nil
}
return nil, apps.Exception("bad JWT claim", fmt.Errorf("failed to claim JWT"), zap.String("token", t), c.Logger)
}
func (c *Cognito) OnboardPartner(m model.CiamOnboardPartnerRequest) (*model.CiamUserResponse, *model.TechnicalError) {
inp := &cognito.SignUpInput{
Username: aws.String(m.Username),
Password: aws.String(m.Password),
ClientId: aws.String(c.ClientId),
SecretHash: aws.String(c.secretHash(m.Username)),
UserAttributes: []*cognito.AttributeType{
{
Name: aws.String("name"),
Value: aws.String(m.Name),
},
{
Name: aws.String("email"),
Value: aws.String(m.Email),
},
{
Name: aws.String("picture"),
Value: aws.String(m.Picture),
},
{
Name: aws.String("phone_number"),
Value: aws.String("+" + m.PhoneNumber),
},
},
}
out, err := c.Provider.SignUp(inp)
if err != nil {
return nil, apps.Exception("failed to onboard partner", err, zap.String("username", m.Username), c.Logger)
}
c.Logger.Info("CIAM output on onboard partner", zap.Any("output", out))
return &model.CiamUserResponse{
TransactionResponse: apps.Transaction(m.PhoneNumber),
SubId: *out.UserSub,
}, nil
}
func (c *Cognito) Authenticate(m model.CiamAuthenticationRequest) (*model.CiamAuthenticationResponse, *model.TechnicalError) {
inp := &cognito.InitiateAuthInput{
AuthFlow: aws.String(cognito.AuthFlowTypeUserPasswordAuth),
AuthParameters: map[string]*string{
"USERNAME": aws.String(m.Username),
"PASSWORD": aws.String(m.Secret),
"SECRET_HASH": aws.String(c.secretHash(m.Username)),
},
ClientId: aws.String(c.ClientId),
}
out, err := c.Provider.InitiateAuth(inp)
if err != nil {
return nil, apps.Exception("failed to authenticate user", err, zap.String("username", m.Username), c.Logger)
}
return &model.CiamAuthenticationResponse{
AccessToken: *out.AuthenticationResult.AccessToken,
Token: *out.AuthenticationResult.IdToken,
RefreshToken: *out.AuthenticationResult.RefreshToken,
ExpiresIn: *out.AuthenticationResult.ExpiresIn,
}, nil
}