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auth_test.go
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package auth
import (
"crypto/rand"
"crypto/rsa"
"crypto/x509"
"encoding/pem"
"fmt"
"io"
"strconv"
"testing"
"time"
"github.com/golang-jwt/jwt/v5"
"github.com/google/go-cmp/cmp"
"github.com/google/uuid"
"github.com/spf13/cobra"
"github.com/stackitcloud/stackit-sdk-go/core/clients"
sdkConfig "github.com/stackitcloud/stackit-sdk-go/core/config"
"github.com/zalando/go-keyring"
)
const saKeyStrPattern = `{
"active": true,
"createdAt": "2023-03-23T18:26:20.335Z",
"credentials": {
"aud": "https://stackit-service-account-prod.apps.01.cf.eu01.stackit.cloud",
"iss": "[email protected]",
"kid": "%s",
"sub": "%s"
},
"id": "%s",
"keyAlgorithm": "RSA_2048",
"keyOrigin": "USER_PROVIDED",
"keyType": "USER_MANAGED",
"publicKey": "...",
"validUntil": "2024-03-22T18:05:41Z"
}`
var (
testSigningKey = []byte("Test")
testServiceAccountKey = fmt.Sprintf(saKeyStrPattern, uuid.New().String(), uuid.New().String(), uuid.New().String())
)
func generatePrivateKey() ([]byte, error) {
// Generate a new RSA key pair with a size of 2048 bits
privKey, err := rsa.GenerateKey(rand.Reader, 2048)
if err != nil {
return nil, err
}
// Encode the private key in PEM format
privKeyPEM := &pem.Block{
Type: "RSA PRIVATE KEY",
Bytes: x509.MarshalPKCS1PrivateKey(privKey),
}
// Print the private and public keys
return pem.EncodeToMemory(privKeyPEM), nil
}
func TestAuthenticationConfig(t *testing.T) {
tests := []struct {
description string
flow AuthFlow
sessionExpiresAt time.Time
accessTokenSet bool
refreshToken string
saKey string
privateKeySet bool
tokenEndpoint string
jwksEndpoint string
isValid bool
expectedCustomAuthSet bool
expectedTokenSet bool
expectedReauthorizeUserCalled bool
}{
{
description: "base_service_account_token",
flow: AUTH_FLOW_SERVICE_ACCOUNT_TOKEN,
sessionExpiresAt: time.Now().Add(time.Hour),
accessTokenSet: true,
refreshToken: "refresh_token",
isValid: true,
expectedTokenSet: true,
},
{
description: "service_account_token_session_expired",
flow: AUTH_FLOW_SERVICE_ACCOUNT_TOKEN,
sessionExpiresAt: time.Now().Add(-time.Hour),
accessTokenSet: true,
refreshToken: "refresh_token",
isValid: false,
},
{
description: "base_service_account_key",
flow: AUTH_FLOW_SERVICE_ACCOUNT_KEY,
sessionExpiresAt: time.Now().Add(time.Hour),
accessTokenSet: true,
refreshToken: "refresh_token",
saKey: testServiceAccountKey,
privateKeySet: true,
tokenEndpoint: "token_url",
jwksEndpoint: "jwks_url",
isValid: true,
expectedCustomAuthSet: true,
},
{
description: "service_account_key_session_expired",
flow: AUTH_FLOW_SERVICE_ACCOUNT_KEY,
sessionExpiresAt: time.Now().Add(-time.Hour),
accessTokenSet: true,
refreshToken: "refresh_token",
saKey: testServiceAccountKey,
privateKeySet: true,
tokenEndpoint: "token_url",
jwksEndpoint: "jwks_url",
isValid: false,
},
{
description: "base_user_token",
flow: AUTH_FLOW_USER_TOKEN,
sessionExpiresAt: time.Now().Add(time.Hour),
accessTokenSet: true,
refreshToken: "refresh_token",
isValid: true,
},
{
description: "user_token_session_expired",
flow: AUTH_FLOW_USER_TOKEN,
sessionExpiresAt: time.Now().Add(-time.Hour),
accessTokenSet: true,
refreshToken: "refresh_token",
isValid: true,
expectedReauthorizeUserCalled: true,
},
{
description: "unsupported_flow",
flow: "test_flow",
isValid: false,
},
{
description: "unset_access_token",
accessTokenSet: false,
isValid: false,
},
{
description: "unset_flow",
flow: "",
isValid: false,
},
}
for _, tt := range tests {
t.Run(tt.description, func(t *testing.T) {
keyring.MockInit()
timestamp := time.Now().Add(24 * time.Hour)
authFields := make(map[authFieldKey]string)
var accessToken string
var err error
if tt.accessTokenSet {
accessTokenJWT := jwt.NewWithClaims(jwt.SigningMethodHS256, jwt.RegisteredClaims{
ExpiresAt: jwt.NewNumericDate(timestamp)})
accessToken, err = accessTokenJWT.SignedString(testSigningKey)
if err != nil {
t.Fatalf("Get test access token as string: %s", err)
}
}
if tt.privateKeySet {
privateKey, err := generatePrivateKey()
if err != nil {
t.Fatalf("Generate private key: %s", err)
}
authFields[PRIVATE_KEY] = string(privateKey)
}
authFields[SESSION_EXPIRES_AT_UNIX] = strconv.FormatInt(tt.sessionExpiresAt.Unix(), 10)
authFields[ACCESS_TOKEN] = accessToken
authFields[REFRESH_TOKEN] = tt.refreshToken
authFields[SERVICE_ACCOUNT_KEY] = tt.saKey
authFields[TOKEN_CUSTOM_ENDPOINT] = tt.tokenEndpoint
authFields[JWKS_CUSTOM_ENDPOINT] = tt.jwksEndpoint
err = SetAuthFlow(tt.flow)
if err != nil {
t.Fatalf("Failed to set auth flow: %s", err)
}
err = SetAuthFieldMap(authFields)
if err != nil {
t.Fatalf("Failed to set in auth storage: %v", err)
}
reauthorizeUserCalled := false
reauthenticateUser := func() error {
if reauthorizeUserCalled {
t.Errorf("user reauthorized more than once")
}
reauthorizeUserCalled = true
return nil
}
cmd := &cobra.Command{}
cmd.SetOut(io.Discard) // Suppresses console prints
authCfgOption, err := AuthenticationConfig(cmd, reauthenticateUser)
if !tt.isValid {
if err == nil {
t.Fatalf("Expected error but no error was returned")
}
} else {
if err != nil {
t.Fatalf("Expected no error but error was returned: %v", err)
}
if reauthorizeUserCalled && !tt.expectedReauthorizeUserCalled {
t.Errorf("Unexpected user reauthentication")
} else if !reauthorizeUserCalled && tt.expectedReauthorizeUserCalled {
t.Errorf("User wasn't reauthenticated when it should've been")
}
baseCfg := &sdkConfig.Configuration{}
err := authCfgOption(baseCfg)
if err != nil {
t.Fatalf("Applying returned auth config option: %v", err)
}
if tt.expectedCustomAuthSet && baseCfg.CustomAuth == nil {
t.Fatalf("The returned auth configuration option should set the CustomAuth field but it is nil")
}
if tt.expectedTokenSet && baseCfg.Token == "" {
t.Fatalf("The returned auth configuration option should set the Token field but it is empty")
}
}
})
}
}
func TestInitKeyFlow(t *testing.T) {
tests := []struct {
description string
accessTokenSet bool
refreshToken string
saKey string
privateKeySet bool
tokenEndpoint string
jwksEndpoint string
isValid bool
}{
{
description: "base",
accessTokenSet: true,
refreshToken: "refresh_token",
saKey: testServiceAccountKey,
privateKeySet: true,
tokenEndpoint: "token_url",
jwksEndpoint: "jwks_url",
isValid: true,
},
{
description: "invalid_service_account_key",
accessTokenSet: true,
refreshToken: "refresh_token",
saKey: "",
privateKeySet: true,
tokenEndpoint: "token_url",
jwksEndpoint: "jwks_url",
isValid: false,
},
{
description: "invalid_private_key",
accessTokenSet: true,
refreshToken: "refresh_token",
saKey: testServiceAccountKey,
privateKeySet: false,
tokenEndpoint: "token_url",
jwksEndpoint: "jwks_url",
isValid: false,
},
{
description: "invalid_access_token",
accessTokenSet: false,
refreshToken: "refresh_token",
saKey: testServiceAccountKey,
privateKeySet: true,
tokenEndpoint: "token_url",
jwksEndpoint: "jwks_url",
isValid: false,
},
{
description: "empty_refresh_token",
accessTokenSet: false,
refreshToken: "",
saKey: testServiceAccountKey,
privateKeySet: true,
tokenEndpoint: "token_url",
jwksEndpoint: "jwks_url",
isValid: false,
},
}
for _, tt := range tests {
t.Run(tt.description, func(t *testing.T) {
keyring.MockInit()
timestamp := time.Now().Add(24 * time.Hour)
authFields := make(map[authFieldKey]string)
var accessToken string
var err error
if tt.accessTokenSet {
accessTokenJWT := jwt.NewWithClaims(jwt.SigningMethodHS256, jwt.RegisteredClaims{
ExpiresAt: jwt.NewNumericDate(timestamp)})
accessToken, err = accessTokenJWT.SignedString(testSigningKey)
if err != nil {
t.Fatalf("Get test access token as string: %s", err)
}
}
if tt.privateKeySet {
privateKey, err := generatePrivateKey()
if err != nil {
t.Fatalf("Generate private key: %s", err)
}
authFields[PRIVATE_KEY] = string(privateKey)
}
authFields[ACCESS_TOKEN] = accessToken
authFields[REFRESH_TOKEN] = tt.refreshToken
authFields[SERVICE_ACCOUNT_KEY] = tt.saKey
authFields[TOKEN_CUSTOM_ENDPOINT] = tt.tokenEndpoint
authFields[JWKS_CUSTOM_ENDPOINT] = tt.jwksEndpoint
err = SetAuthFieldMap(authFields)
if err != nil {
t.Fatalf("Failed to set in auth storage: %v", err)
}
keyFlowWithStorage, err := initKeyFlowWithStorage()
if !tt.isValid {
if err == nil {
t.Fatalf("Expected error but no error was returned")
}
} else {
if err != nil {
t.Fatalf("Expected no error but error was returned: %v", err)
}
expectedToken := &clients.TokenResponseBody{
AccessToken: accessToken,
ExpiresIn: int(timestamp.Unix()),
RefreshToken: tt.refreshToken,
Scope: "",
TokenType: "Bearer",
}
if !cmp.Equal(*expectedToken, keyFlowWithStorage.keyFlow.GetToken()) {
t.Errorf("The returned result is wrong. Expected %+v, got %+v", expectedToken, keyFlowWithStorage.keyFlow.GetToken())
}
}
})
}
}