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client.go
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client.go
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package storage
import (
"time"
"github.com/zitadel/oidc/v3/pkg/oidc"
"github.com/zitadel/oidc/v3/pkg/op"
)
var (
// we use the default login UI and pass the (auth request) id
defaultLoginURL = func(id string) string {
return "/login/username?authRequestID=" + id
}
// clients to be used by the storage interface
clients = map[string]*Client{}
)
// Client represents the storage model of an OAuth/OIDC client
// this could also be your database model
type Client struct {
id string
secret string
redirectURIs []string
applicationType op.ApplicationType
authMethod oidc.AuthMethod
loginURL func(string) string
responseTypes []oidc.ResponseType
grantTypes []oidc.GrantType
accessTokenType op.AccessTokenType
devMode bool
idTokenUserinfoClaimsAssertion bool
clockSkew time.Duration
postLogoutRedirectURIGlobs []string
redirectURIGlobs []string
}
// GetID must return the client_id
func (c *Client) GetID() string {
return c.id
}
// RedirectURIs must return the registered redirect_uris for Code and Implicit Flow
func (c *Client) RedirectURIs() []string {
return c.redirectURIs
}
// PostLogoutRedirectURIs must return the registered post_logout_redirect_uris for sign-outs
func (c *Client) PostLogoutRedirectURIs() []string {
return []string{}
}
// ApplicationType must return the type of the client (app, native, user agent)
func (c *Client) ApplicationType() op.ApplicationType {
return c.applicationType
}
// AuthMethod must return the authentication method (client_secret_basic, client_secret_post, none, private_key_jwt)
func (c *Client) AuthMethod() oidc.AuthMethod {
return c.authMethod
}
// ResponseTypes must return all allowed response types (code, id_token token, id_token)
// these must match with the allowed grant types
func (c *Client) ResponseTypes() []oidc.ResponseType {
return c.responseTypes
}
// GrantTypes must return all allowed grant types (authorization_code, refresh_token, urn:ietf:params:oauth:grant-type:jwt-bearer)
func (c *Client) GrantTypes() []oidc.GrantType {
return c.grantTypes
}
// LoginURL will be called to redirect the user (agent) to the login UI
// you could implement some logic here to redirect the users to different login UIs depending on the client
func (c *Client) LoginURL(id string) string {
return c.loginURL(id)
}
// AccessTokenType must return the type of access token the client uses (Bearer (opaque) or JWT)
func (c *Client) AccessTokenType() op.AccessTokenType {
return c.accessTokenType
}
// IDTokenLifetime must return the lifetime of the client's id_tokens
func (c *Client) IDTokenLifetime() time.Duration {
return 1 * time.Hour
}
// DevMode enables the use of non-compliant configs such as redirect_uris (e.g. http schema for user agent client)
func (c *Client) DevMode() bool {
return c.devMode
}
// RestrictAdditionalIdTokenScopes allows specifying which custom scopes shall be asserted into the id_token
func (c *Client) RestrictAdditionalIdTokenScopes() func(scopes []string) []string {
return func(scopes []string) []string {
return scopes
}
}
// RestrictAdditionalAccessTokenScopes allows specifying which custom scopes shall be asserted into the JWT access_token
func (c *Client) RestrictAdditionalAccessTokenScopes() func(scopes []string) []string {
return func(scopes []string) []string {
return scopes
}
}
// IsScopeAllowed enables Client specific custom scopes validation
// in this example we allow the CustomScope for all clients
func (c *Client) IsScopeAllowed(scope string) bool {
return scope == CustomScope
}
// IDTokenUserinfoClaimsAssertion allows specifying if claims of scope profile, email, phone and address are asserted into the id_token
// even if an access token if issued which violates the OIDC Core spec
// (5.4. Requesting Claims using Scope Values: https://openid.net/specs/openid-connect-core-1_0.html#ScopeClaims)
// some clients though require that e.g. email is always in the id_token when requested even if an access_token is issued
func (c *Client) IDTokenUserinfoClaimsAssertion() bool {
return c.idTokenUserinfoClaimsAssertion
}
// ClockSkew enables clients to instruct the OP to apply a clock skew on the various times and expirations
// (subtract from issued_at, add to expiration, ...)
func (c *Client) ClockSkew() time.Duration {
return c.clockSkew
}
// RegisterClients enables you to register clients for the example implementation
// there are some clients (web and native) to try out different cases
// add more if necessary
//
// RegisterClients should be called before the Storage is used so that there are
// no race conditions.
func RegisterClients(registerClients ...*Client) {
for _, client := range registerClients {
clients[client.id] = client
}
}
// NativeClient will create a client of type native, which will always use PKCE and allow the use of refresh tokens
// user-defined redirectURIs may include:
// - http://localhost without port specification (e.g. http://localhost/auth/callback)
// - custom protocol (e.g. custom://auth/callback)
// (the examples will be used as default, if none is provided)
func NativeClient(id string, redirectURIs ...string) *Client {
if len(redirectURIs) == 0 {
redirectURIs = []string{
"http://localhost/auth/callback",
"custom://auth/callback",
}
}
return &Client{
id: id,
secret: "", // no secret needed (due to PKCE)
redirectURIs: redirectURIs,
applicationType: op.ApplicationTypeNative,
authMethod: oidc.AuthMethodNone,
loginURL: defaultLoginURL,
responseTypes: []oidc.ResponseType{oidc.ResponseTypeCode},
grantTypes: []oidc.GrantType{oidc.GrantTypeCode, oidc.GrantTypeRefreshToken},
accessTokenType: op.AccessTokenTypeBearer,
devMode: false,
idTokenUserinfoClaimsAssertion: false,
clockSkew: 0,
}
}
// WebClient will create a client of type web, which will always use Basic Auth and allow the use of refresh tokens
// user-defined redirectURIs may include:
// - http://localhost with port specification (e.g. http://localhost:9999/auth/callback)
// (the example will be used as default, if none is provided)
func WebClient(id, secret string, redirectURIs ...string) *Client {
if len(redirectURIs) == 0 {
redirectURIs = []string{
"http://localhost:9999/auth/callback",
}
}
return &Client{
id: id,
secret: secret,
redirectURIs: redirectURIs,
applicationType: op.ApplicationTypeWeb,
authMethod: oidc.AuthMethodBasic,
loginURL: defaultLoginURL,
responseTypes: []oidc.ResponseType{oidc.ResponseTypeCode, oidc.ResponseTypeIDTokenOnly, oidc.ResponseTypeIDToken},
grantTypes: []oidc.GrantType{oidc.GrantTypeCode, oidc.GrantTypeRefreshToken, oidc.GrantTypeTokenExchange},
accessTokenType: op.AccessTokenTypeBearer,
devMode: true,
idTokenUserinfoClaimsAssertion: false,
clockSkew: 0,
}
}
// DeviceClient creates a device client with Basic authentication.
func DeviceClient(id, secret string) *Client {
return &Client{
id: id,
secret: secret,
redirectURIs: nil,
applicationType: op.ApplicationTypeWeb,
authMethod: oidc.AuthMethodBasic,
loginURL: defaultLoginURL,
responseTypes: []oidc.ResponseType{oidc.ResponseTypeCode},
grantTypes: []oidc.GrantType{oidc.GrantTypeDeviceCode},
accessTokenType: op.AccessTokenTypeBearer,
devMode: false,
idTokenUserinfoClaimsAssertion: false,
clockSkew: 0,
}
}
type hasRedirectGlobs struct {
*Client
}
// RedirectURIGlobs provide wildcarding for additional valid redirects
func (c hasRedirectGlobs) RedirectURIGlobs() []string {
return c.redirectURIGlobs
}
// PostLogoutRedirectURIGlobs provide extra wildcarding for additional valid redirects
func (c hasRedirectGlobs) PostLogoutRedirectURIGlobs() []string {
return c.postLogoutRedirectURIGlobs
}
// RedirectGlobsClient wraps the client in a op.HasRedirectGlobs
// only if DevMode is enabled.
func RedirectGlobsClient(client *Client) op.Client {
if client.devMode {
return hasRedirectGlobs{client}
}
return client
}