chore(example): implement OpenID Provider

example/server/internal/client.go

@@ -0,0 +1,152 @@
+package internal
+
+import (
+	"time"
+
+	"github.com/caos/oidc/pkg/oidc"
+	"github.com/caos/oidc/pkg/op"
+)
+
+var clients = map[string]*Client{}
+
+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,
+		defaultLoginURL:                defaultLoginURL,
+		responseTypes:                  []oidc.ResponseType{oidc.ResponseTypeCode},
+		grantTypes:                     []oidc.GrantType{oidc.GrantTypeCode, oidc.GrantTypeRefreshToken},
+		accessTokenType:                0,
+		devMode:                        false,
+		idTokenUserinfoClaimsAssertion: false,
+		clockSkew:                      0,
+	}
+}
+
+//WebClient will create a client of type web, 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)
+//(the example will be used as default, if none is provided)
+func WebClient(id, secret string, redirectURIs ...string) *Client {
+	return &Client{
+		id:     id,
+		secret: secret,
+		redirectURIs: []string{
+			"http://localhost:9999/auth/callback",
+		},
+		applicationType:                op.ApplicationTypeWeb,
+		authMethod:                     oidc.AuthMethodBasic,
+		defaultLoginURL:                defaultLoginURL,
+		responseTypes:                  []oidc.ResponseType{oidc.ResponseTypeCode},
+		grantTypes:                     []oidc.GrantType{oidc.GrantTypeCode, oidc.GrantTypeRefreshToken},
+		accessTokenType:                0,
+		devMode:                        false,
+		idTokenUserinfoClaimsAssertion: false,
+		clockSkew:                      0,
+	}
+}
+
+type Client struct {
+	id                             string
+	secret                         string
+	redirectURIs                   []string
+	applicationType                op.ApplicationType
+	authMethod                     oidc.AuthMethod
+	defaultLoginURL                func(string) string
+	responseTypes                  []oidc.ResponseType
+	grantTypes                     []oidc.GrantType
+	accessTokenType                op.AccessTokenType
+	devMode                        bool
+	idTokenUserinfoClaimsAssertion bool
+	clockSkew                      time.Duration
+}
+
+func (c *Client) GetID() string {
+	return c.id
+}
+
+func (c *Client) RedirectURIs() []string {
+	return c.redirectURIs
+}
+
+func (c *Client) PostLogoutRedirectURIs() []string {
+	return []string{}
+}
+
+func (c *Client) ApplicationType() op.ApplicationType {
+	return c.applicationType
+}
+
+func (c *Client) AuthMethod() oidc.AuthMethod {
+	return c.authMethod
+}
+
+func (c *Client) ResponseTypes() []oidc.ResponseType {
+	return c.responseTypes
+}
+
+func (c *Client) GrantTypes() []oidc.GrantType {
+	return c.grantTypes
+}
+
+func (c *Client) LoginURL(id string) string {
+	//we use the default login UI and pass the (auth request) id,
+	//but you could implement some logic here to redirect the users to different login UIs depending on the client
+	return c.defaultLoginURL(id)
+}
+
+func (c *Client) AccessTokenType() op.AccessTokenType {
+	return c.accessTokenType
+}
+
+func (c *Client) IDTokenLifetime() time.Duration {
+	return 1 * time.Hour
+}
+
+func (c *Client) DevMode() bool {
+	return c.devMode
+}
+
+func (c *Client) RestrictAdditionalIdTokenScopes() func(scopes []string) []string {
+	return func(scopes []string) []string {
+		return scopes
+	}
+}
+
+func (c *Client) RestrictAdditionalAccessTokenScopes() func(scopes []string) []string {
+	return func(scopes []string) []string {
+		return scopes
+	}
+}
+
+func (c *Client) IsScopeAllowed(scope string) bool {
+	return false
+}
+
+func (c *Client) IDTokenUserinfoClaimsAssertion() bool {
+	return c.idTokenUserinfoClaimsAssertion
+}
+
+func (c *Client) ClockSkew() time.Duration {
+	return c.clockSkew
+}