supporting google authenticator with Okta auth (#14985)

* supporting google authenticator with Okta auth

* minor fix

* CL

* feedback

* Update changelog/14985.txt

Co-authored-by: Calvin Leung Huang <1883212+calvn@users.noreply.github.com>

* updating docs

Co-authored-by: Calvin Leung Huang <1883212+calvn@users.noreply.github.com>

builtin/credential/okta/backend.go

@@ -6,6 +6,7 @@ import (
 	"net/textproto"
 	"time"
 
+	"github.com/hashicorp/go-secure-stdlib/strutil"
 	"github.com/hashicorp/vault/helper/mfa"
 	"github.com/hashicorp/vault/sdk/framework"
 	"github.com/hashicorp/vault/sdk/helper/cidrutil"
@@ -63,7 +64,7 @@ type backend struct {
 	*framework.Backend
 }
 
-func (b *backend) Login(ctx context.Context, req *logical.Request, username, password, totp string) ([]string, *logical.Response, []string, error) {
+func (b *backend) Login(ctx context.Context, req *logical.Request, username, password, totp, preferredProvider string) ([]string, *logical.Response, []string, error) {
 	cfg, err := b.Config(ctx, req.Storage)
 	if err != nil {
 		return nil, nil, nil, err
@@ -179,7 +180,11 @@ func (b *backend) Login(ctx context.Context, req *logical.Request, username, pas
 		for _, v := range result.Embedded.Factors {
 			v := v // create a new copy since we'll be taking the address later
 
-			if v.Provider != "OKTA" {
+			if preferredProvider != "" && preferredProvider != v.Provider {
+				continue
+			}
+
+			if !strutil.StrListContains(b.getSupportedProviders(), v.Provider) {
 				continue
 			}
 
@@ -191,17 +196,18 @@ func (b *backend) Login(ctx context.Context, req *logical.Request, username, pas
 			}
 		}
 
-		// Okta push and totp are currently supported. If a totp passcode is provided during
-		// login and is supported, that will be the preferred method.
+		// Okta push and totp, and Google totp are currently supported.
+		// If a totp passcode is provided during login and is supported,
+		// that will be the preferred method.
 		switch {
 		case totpFactor != nil && totp != "":
 			selectedFactor = totpFactor
-		case pushFactor != nil:
+		case pushFactor != nil && pushFactor.Provider == oktaProvider:
 			selectedFactor = pushFactor
 		case totpFactor != nil && totp == "":
 			return nil, logical.ErrorResponse("'totp' passcode parameter is required to perform MFA"), nil, nil
 		default:
-			return nil, logical.ErrorResponse("Okta Verify Push or TOTP factor is required in order to perform MFA"), nil, nil
+			return nil, logical.ErrorResponse("Okta Verify Push or TOTP or Google TOTP factor is required in order to perform MFA"), nil, nil
 		}
 
 		requestPath := fmt.Sprintf("authn/factors/%s/verify", selectedFactor.Id)

builtin/credential/okta/cli.go

@@ -38,11 +38,16 @@ func (h *CLIHandler) Auth(c *api.Client, m map[string]string) (*api.Secret, erro
 		"password": password,
 	}
 
-	// Okta totp code
+	// Okta or Google totp code
 	if totp, ok := m["totp"]; ok {
 		data["totp"] = totp
 	}
 
+	// provider is an optional parameter
+	if provider, ok := m["provider"]; ok {
+		data["provider"] = provider
+	}
+
 	// Legacy MFA support
 	mfa_method, ok := m["method"]
 	if ok {

builtin/credential/okta/path_login.go

@@ -8,9 +8,15 @@ import (
 	"github.com/go-errors/errors"
 	"github.com/hashicorp/vault/sdk/framework"
 	"github.com/hashicorp/vault/sdk/helper/policyutil"
+	"github.com/hashicorp/vault/sdk/helper/strutil"
 	"github.com/hashicorp/vault/sdk/logical"
 )
 
+const (
+	googleProvider = "GOOGLE"
+	oktaProvider   = "OKTA"
+)
+
 func pathLogin(b *backend) *framework.Path {
 	return &framework.Path{
 		Pattern: `login/(?P<username>.+)`,
@@ -28,6 +34,10 @@ func pathLogin(b *backend) *framework.Path {
 				Type:        framework.TypeString,
 				Description: "TOTP passcode.",
 			},
+			"provider": {
+				Type:        framework.TypeString,
+				Description: "Preferred factor provider.",
+			},
 		},
 
 		Callbacks: map[logical.Operation]framework.OperationFunc{
@@ -40,6 +50,10 @@ func pathLogin(b *backend) *framework.Path {
 	}
 }
 
+func (b *backend) getSupportedProviders() []string {
+	return []string{googleProvider, oktaProvider}
+}
+
 func (b *backend) pathLoginAliasLookahead(ctx context.Context, req *logical.Request, d *framework.FieldData) (*logical.Response, error) {
 	username := d.Get("username").(string)
 	if username == "" {
@@ -59,8 +73,12 @@ func (b *backend) pathLogin(ctx context.Context, req *logical.Request, d *framew
 	username := d.Get("username").(string)
 	password := d.Get("password").(string)
 	totp := d.Get("totp").(string)
+	preferredProvider := strings.ToUpper(d.Get("provider").(string))
+	if preferredProvider != "" && !strutil.StrListContains(b.getSupportedProviders(), preferredProvider) {
+		return logical.ErrorResponse(fmt.Sprintf("provider %s is not among the supported ones %v", preferredProvider, b.getSupportedProviders())), nil
+	}
 
-	policies, resp, groupNames, err := b.Login(ctx, req, username, password, totp)
+	policies, resp, groupNames, err := b.Login(ctx, req, username, password, totp, preferredProvider)
 	// Handle an internal error
 	if err != nil {
 		return nil, err
@@ -124,7 +142,7 @@ func (b *backend) pathLoginRenew(ctx context.Context, req *logical.Request, d *f
 
 	// No TOTP entry is possible on renew. If push MFA is enabled it will still be triggered, however.
 	// Sending "" as the totp will prompt the push action if it is configured.
-	loginPolicies, resp, groupNames, err := b.Login(ctx, req, username, password, "")
+	loginPolicies, resp, groupNames, err := b.Login(ctx, req, username, password, "", "")
 	if err != nil || (resp != nil && resp.IsError()) {
 		return resp, err
 	}

changelog/14985.txt

@@ -0,0 +1,3 @@
+```release-note:improvement
+auth/okta: Add support for Google provider TOTP type in the Okta auth method
+```

website/content/api-docs/auth/okta.mdx

@@ -352,6 +352,7 @@ Login with the username and password.
 - `username` `(string: <required>)` - Username for this user.
 - `password` `(string: <required>)` - Password for the authenticating user.
 - `totp` `(string: <optional>)` - Okta Verify TOTP passcode.
+- `provider` `(string: <optional>)` - MFA TOTP factor provider. `GOOGLE` and `OKTA` are currently supported.
 
 ### Sample Payload
 

website/content/docs/auth/okta.mdx

@@ -54,13 +54,20 @@ The response will contain a token at `auth.client_token`:
 
 ### MFA
 
-Okta Verify Push and TOTP MFA methods are supported during login. For TOTP, the current
+Okta Verify Push and TOTP MFA methods, and Google TOTP are supported during login. For TOTP, the current
 passcode may be provided via the `totp` parameter:
 
 ```shell-session
 $ vault login -method=okta username=my-username totp=123456
 ```
 
+If both Okta TOTP and Google TOTP are enabled in your Okta account, make sure to pass in
+the `provider` name to which the `totp` code belong.
+
+```shell-session
+$ vault login -method=okta username=my-username totp=123456 provider=GOOGLE
+```
+
 If `totp` is not set and MFA Push is configured in Okta, a Push will be sent during login.
 
 The auth method uses the Okta [Authentication API](https://developer.okta.com/docs/reference/api/authn/).