cmd/serve.go

@@ -2,7 +2,6 @@ package cmd
 
 import (
 	opaal "davidallendj/opaal/internal"
-	"davidallendj/opaal/internal/oidc"
 	"errors"
 	"fmt"
 	"net/http"
@@ -10,13 +9,9 @@ import (
 	"github.com/spf13/cobra"
 )
 
-var (
+var exampleCmd = &cobra.Command{
-	endpoints oidc.Endpoints
-)
-
-var serveCmd = &cobra.Command{
 	Use:   "serve",
-	Short: "Start an simple, bare minimal identity provider server",
+	Short: "Start an simple identity provider server",
 	Long:  "The built-in identity provider is not (nor meant to be) a complete OIDC implementation and behaves like an external IdP",
 	Run: func(cmd *cobra.Command, args []string) {
 		s := opaal.NewServerWithConfig(&config)
@@ -26,15 +21,11 @@ var serveCmd = &cobra.Command{
 		if errors.Is(err, http.ErrServerClosed) {
 			fmt.Printf("Identity provider server closed.\n")
 		} else if err != nil {
-			fmt.Printf("failed to start server: %v", err)
+			fmt.Errorf("failed to start server: %v", err)
 		}
 	},
 }
 
 func init() {
-	serveCmd.Flags().StringVar(&endpoints.Authorization, "endpoints.authorization", "", "set the authorization endpoint for the identity provider")
+	rootCmd.AddCommand(exampleCmd)
-	serveCmd.Flags().StringVar(&endpoints.Token, "endpoints.token", "", "set the token endpoint for the identity provider")
-	serveCmd.Flags().StringVar(&endpoints.JwksUri, "endpoints.jwks_uri", "", "set the JWKS endpoints for the identity provider")
-
-	rootCmd.AddCommand(serveCmd)
 }

internal/config.go

@@ -2,7 +2,6 @@ package opaal
 
 import (
 	"davidallendj/opaal/internal/oauth"
-	"davidallendj/opaal/internal/oidc"
 	"log"
 	"os"
 	"path/filepath"
@@ -46,7 +45,6 @@ type TokenOptions struct {
 	Forwarding bool          `yaml:"forwarding"`
 	Refresh    bool          `yaml:"refresh"`
 	Scope      []string      `yaml:"scope"`
-	//TODO: allow specifying audience in returned token
 }
 
 type Authentication struct {
@@ -57,10 +55,9 @@ type Authentication struct {
 }
 
 type Authorization struct {
-	Token     TokenOptions `yaml:"token"`
 	Endpoints Endpoints    `yaml:"endpoints"`
 	KeyPath   string       `yaml:"key-path"`
-	Audience  []string     `yaml:"audience"` // NOTE: overrides the "aud" claim in token sent to authorization server
+	Token     TokenOptions `yaml:"token"`
 }
 
 type Config struct {
@@ -73,18 +70,11 @@ type Config struct {
 }
 
 func NewConfig() Config {
-	config := Config{
+	return Config{
 		Version: goutil.GetCommit(),
 		Server: server.Server{
 			Host: "127.0.0.1",
 			Port: 3333,
-			Issuer: server.IdentityProviderServer{
-				Endpoints: oidc.Endpoints{
-					Authorization: "",
-					Token:         "",
-					JwksUri:       "",
-				},
-			},
 		},
 		Options: Options{
 			RunOnce:     true,
@@ -107,7 +97,6 @@ func NewConfig() Config {
 			},
 		},
 	}
-	return config
 }
 
 func LoadConfig(path string) Config {

internal/flows/jwt_bearer.go

@@ -23,7 +23,6 @@ type JwtBearerFlowParams struct {
 	// IdentityProvider *oidc.IdentityProvider
 	TrustedIssuer *oauth.TrustedIssuer
 	Client        *oauth.Client
-	Audience      []string
 	Refresh       bool
 	Verbose       bool
 	KeyPath       string
@@ -51,9 +50,6 @@ func NewJwtBearerFlow(eps JwtBearerFlowEndpoints, params JwtBearerFlowParams) (s
 	if client == nil {
 		return "", fmt.Errorf("invalid client (client is nil)")
 	}
-	if verbose {
-		fmt.Printf("ID token (IDP): %s\n access token (IDP): %s", accessToken, idToken)
-	}
 	if accessToken != "" {
 		_, err := jws.Verify([]byte(accessToken), jws.WithKeySet(client.Provider.KeySet), jws.WithValidateKey(true))
 		if err != nil {
@@ -147,11 +143,6 @@ func NewJwtBearerFlow(eps JwtBearerFlowEndpoints, params JwtBearerFlowParams) (s
 	payload["exp"] = time.Now().Add(time.Second * 3600 * 16).Unix()
 	payload["sub"] = "opaal"
 
-	// if an "audience" value is set, then override the token endpoint value
-	if len(params.Audience) > 0 {
-		payload["aud"] = params.Audience
-	}
-
 	// include the offline_access scope if refresh tokens are enabled
 	if params.Refresh {
 		v, ok := payload["scope"]

internal/login.go

@@ -42,9 +42,8 @@ func Login(config *Config) error {
 			AuthProvider: &oidc.IdentityProvider{
 				Issuer: config.Authorization.Endpoints.Issuer,
 				Endpoints: oidc.Endpoints{
-					Config:        config.Authorization.Endpoints.Config,
+					Config:  config.Authorization.Endpoints.Config,
-					Authorization: config.Authorization.Endpoints.Authorize,
+					JwksUri: config.Authorization.Endpoints.JwksUri,
-					JwksUri:       config.Authorization.Endpoints.JwksUri,
 				},
 			},
 			JwtBearerEndpoints: flows.JwtBearerFlowEndpoints{
@@ -61,9 +60,8 @@ func Login(config *Config) error {
 					ExpiresAt:       time.Now().Add(config.Authorization.Token.Duration),
 					Scope:           []string{},
 				},
-				Verbose:  config.Options.Verbose,
+				Verbose: config.Options.Verbose,
-				Refresh:  config.Authorization.Token.Refresh,
+				Refresh: config.Authorization.Token.Refresh,
-				Audience: config.Authorization.Audience,
 			},
 			ClientCredentialsEndpoints: flows.ClientCredentialsFlowEndpoints{
 				Clients:   config.Authorization.Endpoints.Clients,

internal/new.go

@@ -90,11 +90,9 @@ func NewServerWithConfig(conf *Config) *server.Server {
 		},
 		Host: host,
 		Port: port,
-		Issuer: server.IdentityProviderServer{
+		Issuer: server.Issuer{
-			Host:      conf.Server.Issuer.Host,
+			Host: conf.Server.Issuer.Host,
-			Port:      conf.Server.Issuer.Port,
+			Port: conf.Server.Issuer.Port,
-			Endpoints: conf.Server.Issuer.Endpoints,
-			Clients:   conf.Server.Issuer.Clients,
 		},
 	}
 	return server

internal/oauth/authenticate.go

@@ -109,14 +109,12 @@ func (client *Client) FetchTokenFromAuthenticationServer(code string, state stri
 	}
 	res, err := http.PostForm(client.Provider.Endpoints.Token, body)
 	if err != nil {
-		return nil, fmt.Errorf("failed to get ID token: %v", err)
+		return nil, fmt.Errorf("failed to get ID token: %s", err)
 	}
-	b, err := io.ReadAll(res.Body)
-	if err != nil {
-		return nil, fmt.Errorf("failed to read response body: %v", err)
-	}
-	fmt.Printf("%s\n", string(b))
 	defer res.Body.Close()
 
-	return b, nil
+	// domain, _ := url.Parse("http://127.0.0.1")
+	// client.Jar.SetCookies(domain, res.Cookies())
+
+	return io.ReadAll(res.Body)
 }

internal/oidc/oidc.go

@@ -164,25 +164,3 @@ func (p *IdentityProvider) FetchJwks() error {
 
 	return nil
 }
-
-func (p *IdentityProvider) UpdateEndpoints(other *IdentityProvider) {
-	UpdateEndpoints(&p.Endpoints, &other.Endpoints)
-}
-
-func UpdateEndpoints(eps *Endpoints, other *Endpoints) {
-	// only update endpoints that are not empty
-	var UpdateIfEmpty = func(ep *string, s string) {
-		if ep != nil {
-			if *ep == "" {
-				*ep = s
-			}
-		}
-	}
-	UpdateIfEmpty(&eps.Config, other.Config)
-	UpdateIfEmpty(&eps.Authorization, other.Authorization)
-	UpdateIfEmpty(&eps.Token, other.Token)
-	UpdateIfEmpty(&eps.Revocation, other.Revocation)
-	UpdateIfEmpty(&eps.Introspection, other.Introspection)
-	UpdateIfEmpty(&eps.UserInfo, other.UserInfo)
-	UpdateIfEmpty(&eps.JwksUri, other.JwksUri)
-}

internal/server/idp.go

@@ -1,290 +0,0 @@
-package server
-
-import (
-	"crypto/rand"
-	"crypto/rsa"
-	"davidallendj/opaal/internal/oidc"
-	"encoding/json"
-	"fmt"
-	"net/http"
-	"os"
-	"slices"
-	"strings"
-	"time"
-
-	"github.com/davidallendj/go-utils/cryptox"
-	"github.com/davidallendj/go-utils/util"
-	"github.com/go-chi/chi/v5"
-	"github.com/lestrrat-go/jwx/v2/jwa"
-	"github.com/lestrrat-go/jwx/v2/jwk"
-	"github.com/lestrrat-go/jwx/v2/jws"
-	"github.com/lestrrat-go/jwx/v2/jwt"
-)
-
-// TODO: make this a completely separate server
-type IdentityProviderServer struct {
-	Host      string             `yaml:"host"`
-	Port      int                `yaml:"port"`
-	Endpoints oidc.Endpoints     `yaml:"endpoints"`
-	Clients   []RegisteredClient `yaml:"clients"`
-}
-
-// NOTE: could we use a oauth.Client here instead??
-type RegisteredClient struct {
-	Id           string   `yaml:"id"`
-	Secret       string   `yaml:"secret"`
-	Name         string   `yaml:"name"`
-	RedirectUris []string `yaml:"redirect-uris"`
-}
-
-func (s *Server) StartIdentityProvider() error {
-	// NOTE: this example does NOT implement CSRF tokens nor use them
-
-	// create an example identity provider
-	var (
-		r = chi.NewRouter()
-		// clients  = []oauth.Client{}
-		activeCodes = []string{}
-	)
-
-	// update endpoints that have values set
-	defaultEps := oidc.Endpoints{
-		Authorization: "http://" + s.Addr + "/oauth2/authorize",
-		Token:         "http://" + s.Addr + "/oauth2/token",
-		JwksUri:       "http://" + s.Addr + "/.well-known/jwks.json",
-	}
-	oidc.UpdateEndpoints(&s.Issuer.Endpoints, &defaultEps)
-
-	// generate key pair used to sign JWKS and create JWTs
-	privateKey, err := rsa.GenerateKey(rand.Reader, 2048)
-	if err != nil {
-		return fmt.Errorf("failed to generate new RSA key: %v", err)
-	}
-	privateJwk, publicJwk, err := cryptox.GenerateJwkKeyPairFromPrivateKey(privateKey)
-	if err != nil {
-		return fmt.Errorf("failed to generate JWK pair from private key: %v", err)
-	}
-	kid, _ := privateJwk.Get("kid")
-	publicJwk.Set("kid", kid)
-	publicJwk.Set("use", "sig")
-	publicJwk.Set("kty", "RSA")
-	publicJwk.Set("alg", "RS256")
-	if err := publicJwk.Validate(); err != nil {
-		return fmt.Errorf("failed to validate public JWK: %v", err)
-	}
-
-	// TODO: create .well-known JWKS endpoint with json
-	r.HandleFunc("/.well-known/jwks.json", func(w http.ResponseWriter, r *http.Request) {
-		// TODO: generate new JWKs from a private key
-
-		jwks := map[string]any{
-			"keys": []jwk.Key{
-				publicJwk,
-			},
-		}
-		b, err := json.Marshal(jwks)
-		if err != nil {
-			return
-		}
-		w.Write(b)
-	})
-
-	r.HandleFunc("/.well-known/openid-configuration", func(w http.ResponseWriter, r *http.Request) {
-		// create config JSON to serve with GET request
-		config := map[string]any{
-			"issuer":                 "http://" + s.Addr,
-			"authorization_endpoint": s.Issuer.Endpoints.Authorization,
-			"token_endpoint":         s.Issuer.Endpoints.Token,
-			"jwks_uri":               s.Issuer.Endpoints.JwksUri,
-			"scopes_supported": []string{
-				"openid",
-				"profile",
-				"email",
-			},
-			"response_types_supported": []string{
-				"code",
-			},
-			"grant_types_supported": []string{
-				"authorization_code",
-			},
-			"id_token_signing_alg_values_supported": []string{
-				"RS256",
-			},
-			"claims_supported": []string{
-				"iss",
-				"sub",
-				"aud",
-				"exp",
-				"iat",
-				"name",
-				"email",
-			},
-		}
-
-		b, err := json.Marshal(config)
-		if err != nil {
-			return
-		}
-		w.Write(b)
-	})
-	r.HandleFunc("/register", func(w http.ResponseWriter, r *http.Request) {
-		// serve up a simple login page
-	})
-	r.HandleFunc("/consent", func(w http.ResponseWriter, r *http.Request) {
-		// give consent for app to use
-	})
-	r.HandleFunc("/browser/login", func(w http.ResponseWriter, r *http.Request) {
-		// serve up a login page for user creds
-		form, err := os.ReadFile("pages/login.html")
-		if err != nil {
-			fmt.Printf("failed to load login form: %v", err)
-		}
-		w.Write(form)
-	})
-	r.HandleFunc("/api/login", func(w http.ResponseWriter, r *http.Request) {
-		// check for example identity with POST request
-		r.ParseForm()
-		username := r.Form.Get("username")
-		password := r.Form.Get("password")
-
-		if len(s.Issuer.Clients) <= 0 {
-			fmt.Printf("no registered clients found with identity provider (add them in config)\n")
-			return
-		}
-
-		// example username and password so do simplified authorization code flow
-		if username == "openchami" && password == "openchami" {
-			client := s.Issuer.Clients[0]
-
-			// check if there are any redirect URIs supplied
-			if len(client.RedirectUris) <= 0 {
-				fmt.Printf("no redirect URIs found for client %s (ID: %s)\n", client.Name, client.Id)
-				return
-			}
-			for _, url := range client.RedirectUris {
-				// send an authorization code to each URI
-				code := util.RandomString(64)
-				activeCodes = append(activeCodes, code)
-				redirectUrl := fmt.Sprintf("%s?code=%s", url, code)
-				fmt.Printf("redirect URL: %s\n", redirectUrl)
-				http.Redirect(w, r, redirectUrl, http.StatusFound)
-				// _, _, err := httpx.MakeHttpRequest(fmt.Sprintf("%s?code=%s", url, code), http.MethodGet, nil, nil)
-				// if err != nil {
-				// 	fmt.Printf("failed to make request: %v\n", err)
-				// 	continue
-				// }
-			}
-		} else {
-			w.Write([]byte("error logging in"))
-			http.Redirect(w, r, "/browser/login", http.StatusUnauthorized)
-		}
-	})
-	r.HandleFunc("/oauth2/token", func(w http.ResponseWriter, r *http.Request) {
-		r.ParseForm()
-
-		// check for authorization code and make sure it's valid
-		var code = r.Form.Get("code")
-		index := slices.IndexFunc(activeCodes, func(s string) bool { return s == code })
-		if index < 0 {
-			fmt.Printf("invalid authorization code: %s\n", code)
-			return
-		}
-
-		// now create and return a JWT that can be verified with by authorization server
-		iat := time.Now().Unix()
-		exp := time.Now().Add(time.Second * 3600 * 16).Unix()
-		t := jwt.New()
-		t.Set(jwt.IssuerKey, s.Addr)
-		t.Set(jwt.SubjectKey, "ochami")
-		t.Set(jwt.AudienceKey, "ochami")
-		t.Set(jwt.IssuedAtKey, iat)
-		t.Set(jwt.ExpirationKey, exp)
-		t.Set("name", "ochami")
-		t.Set("email", "example@ochami.org")
-		t.Set("email_verified", true)
-		t.Set("scope", []string{
-			"openid",
-			"profile",
-			"email",
-			"example",
-		})
-		// payload := map[string]any{}
-		// payload["iss"] = s.Addr
-		// payload["aud"] = "ochami"
-		// payload["iat"] = iat
-		// payload["nbf"] = iat
-		// payload["exp"] = exp
-		// payload["sub"] = "ochami"
-		// payload["name"] = "ochami"
-		// payload["email"] = "example@ochami.org"
-		// payload["email_verified"] = true
-		// payload["scope"] = []string{
-		// 	"openid",
-		// 	"profile",
-		// 	"email",
-		// 	"example",
-		// }
-		payloadJson, err := json.MarshalIndent(t, "", "\t")
-		if err != nil {
-			fmt.Printf("failed to marshal payload: %v", err)
-			return
-		}
-		signed, err := jws.Sign(payloadJson, jws.WithKey(jwa.RS256, privateJwk))
-		if err != nil {
-			fmt.Printf("failed to sign token: %v\n", err)
-			return
-		}
-
-		// construct the bearer token with required fields
-		scope, _ := t.Get("scope")
-		bearer := map[string]any{
-			"token_type": "Bearer",
-			"id_token":   string(signed),
-			"expires_in": exp,
-			"created_at": iat,
-			"scope":      strings.Join(scope.([]string), " "),
-		}
-
-		b, err := json.MarshalIndent(bearer, "", "\t")
-		if err != nil {
-			fmt.Printf("failed to marshal bearer token: %v\n", err)
-			return
-		}
-		fmt.Printf("bearer: %s\n", string(b))
-		w.Write(b)
-	})
-	r.HandleFunc("/oauth2/authorize", func(w http.ResponseWriter, r *http.Request) {
-		var (
-			responseType = r.URL.Query().Get("response_type")
-			clientId     = r.URL.Query().Get("client_id")
-			redirectUris = r.URL.Query().Get("redirect_uri")
-		)
-
-		// check for required authorization code params
-		if responseType != "code" {
-			fmt.Printf("invalid response type\n")
-			return
-		}
-
-		// find a valid client
-		index := slices.IndexFunc(s.Issuer.Clients, func(c RegisteredClient) bool {
-			fmt.Printf("%s ? %s\n", c.Id, clientId)
-			return c.Id == clientId
-		})
-		if index < 0 {
-			fmt.Printf("no valid client found")
-			return
-		}
-
-		// TODO: check that our redirect URIs all match
-		for _, uri := range redirectUris {
-			_ = uri
-		}
-
-		// redirect to browser login since we don't do session management here
-		http.Redirect(w, r, "/browser/login", http.StatusFound)
-	})
-
-	s.Handler = r
-	return s.ListenAndServe()
-}

internal/server/server.go

@@ -1,28 +1,44 @@
 package server
 
 import (
+	"crypto/rand"
+	"crypto/rsa"
 	"davidallendj/opaal/internal/flows"
 	"davidallendj/opaal/internal/oauth"
 	"davidallendj/opaal/internal/oidc"
 	"encoding/json"
 	"fmt"
 	"net/http"
+	"os"
 	"slices"
+	"strings"
+	"time"
 
+	"github.com/davidallendj/go-utils/cryptox"
 	"github.com/davidallendj/go-utils/httpx"
+	"github.com/davidallendj/go-utils/util"
 	"github.com/go-chi/chi/v5"
 	"github.com/go-chi/chi/v5/middleware"
+	"github.com/lestrrat-go/jwx/v2/jwa"
+	"github.com/lestrrat-go/jwx/v2/jwk"
+	"github.com/lestrrat-go/jwx/v2/jws"
+	"github.com/lestrrat-go/jwx/v2/jwt"
 	"github.com/nikolalohinski/gonja/v2"
 	"github.com/nikolalohinski/gonja/v2/exec"
 )
 
 type Server struct {
 	*http.Server
-	Host     string                 `yaml:"host"`
+	Host     string `yaml:"host"`
-	Port     int                    `yaml:"port"`
+	Port     int    `yaml:"port"`
-	Callback string                 `yaml:"callback"`
+	Callback string `yaml:"callback"`
-	State    string                 `yaml:"state"`
+	State    string `yaml:"state"`
-	Issuer   IdentityProviderServer `yaml:"issuer"`
+	Issuer   Issuer `yaml:"issuer"`
+}
+
+type Issuer struct {
+	Host string `yaml:"host"`
+	Port int    `yaml:"port"`
 }
 
 type ServerParams struct {
@@ -57,7 +73,7 @@ func (s *Server) StartLogin(clients []oauth.Client, params ServerParams) error {
 
 	// make the login page SSO buttons and authorization URLs to write to stdout
 	buttons := ""
-	fmt.Printf("Login with an identity provider: \n")
+	fmt.Printf("Login with external identity providers: \n")
 	for i, client := range clients {
 		// fetch provider configuration before adding button
 		p, err := oidc.FetchServerConfig(client.Provider.Issuer)
@@ -74,7 +90,8 @@ func (s *Server) StartLogin(clients []oauth.Client, params ServerParams) error {
 
 		clients[i].Provider = *p
 		buttons += makeButton(fmt.Sprintf("/login?sso=%s", client.Id), client.Name)
-		fmt.Printf("\t%s: /login?sso=%s\n", client.Name, client.Id)
+		url := client.BuildAuthorizationUrl(s.State)
+		fmt.Printf("\t%s\n", url)
 	}
 
 	var code string
@@ -114,9 +131,7 @@ func (s *Server) StartLogin(clients []oauth.Client, params ServerParams) error {
 				client = &clients[index]
 
 				url := client.BuildAuthorizationUrl(s.State)
-				if params.Verbose {
+				fmt.Printf("Redirect URL: %s\n", url)
-					fmt.Printf("Redirect URL: %s\n", url)
-				}
 				http.Redirect(w, r, url, http.StatusFound)
 				return
 			}
@@ -141,47 +156,38 @@ func (s *Server) StartLogin(clients []oauth.Client, params ServerParams) error {
 			p    = params.AuthProvider
 			jwks []byte
 		)
-
+		// try and get the JWKS from param first
-		fetchAndMarshal := func() (err error) {
+		if p.Endpoints.JwksUri != "" {
-			err = p.FetchJwks()
+			err := p.FetchJwks()
 			if err != nil {
-				fmt.Printf("failed to fetch keys: %v\n", err)
+				fmt.Printf("failed to fetch keys using JWKS url...trying to fetch config and try again...\n")
-				return
 			}
 			jwks, err = json.Marshal(p.KeySet)
 			if err != nil {
 				fmt.Printf("failed to marshal JWKS: %v\n", err)
 			}
-			return
+		} else if p.Endpoints.Config != "" && jwks == nil {
-		}
+			// otherwise, try and fetch the whole config and try again
-
+			err := p.FetchServerConfig()
-		// try and get the JWKS from param first
+			if err != nil {
-		if p.Endpoints.JwksUri != "" {
-			if err := fetchAndMarshal(); err != nil {
-				w.Write(jwks)
-				return
-			}
-		}
-
-		// otherwise or if fetching the JWKS failed, try and fetch the whole config first and try again
-		if p.Endpoints.Config != "" {
-			if err := p.FetchServerConfig(); err != nil {
 				fmt.Printf("failed to fetch server config: %v\n", err)
-				http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
+				http.Redirect(w, r, "/error", http.StatusInternalServerError)
+				return
+			}
+			err = p.FetchJwks()
+			if err != nil {
+				fmt.Printf("failed to fetch JWKS after fetching server config: %v\n", err)
+				http.Redirect(w, r, "/error", http.StatusInternalServerError)
 				return
 			}
-		} else {
-			fmt.Printf("getting JWKS from param failed and endpoints config unavailable\n")
-			http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
-			return
 		}
 
-		if err := fetchAndMarshal(); err != nil {
+		// forward the JWKS from the authorization server
-			fmt.Printf("failed to fetch and marshal JWKS after config update: %v\n", err)
+		if jwks == nil {
-			http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
+			fmt.Printf("no JWKS was fetched from authorization server\n")
+			http.Redirect(w, r, "/error", http.StatusInternalServerError)
 			return
 		}
-
 		w.Write(jwks)
 	})
 	r.HandleFunc("/token", func(w http.ResponseWriter, r *http.Request) {
@@ -333,6 +339,256 @@ func (s *Server) StartLogin(clients []oauth.Client, params ServerParams) error {
 	return s.ListenAndServe()
 }
 
+func (s *Server) StartIdentityProvider() error {
+	// NOTE: this example does NOT implement CSRF tokens nor use them
+
+	// create an example identity provider
+	var (
+		r = chi.NewRouter()
+		// clients  = []oauth.Client{}
+		callback    = ""
+		activeCodes = []string{}
+	)
+
+	// check if callback is set
+	if s.Callback == "" {
+		callback = "/oidc/callback"
+	}
+
+	// generate key pair used to sign JWKS and create JWTs
+	privateKey, err := rsa.GenerateKey(rand.Reader, 2048)
+	if err != nil {
+		return fmt.Errorf("failed to generate new RSA key: %v", err)
+	}
+	privateJwk, publicJwk, err := cryptox.GenerateJwkKeyPairFromPrivateKey(privateKey)
+	if err != nil {
+		return fmt.Errorf("failed to generate JWK pair from private key: %v", err)
+	}
+	kid, _ := privateJwk.Get("kid")
+	publicJwk.Set("kid", kid)
+	publicJwk.Set("use", "sig")
+	publicJwk.Set("kty", "RSA")
+	publicJwk.Set("alg", "RS256")
+	if err := publicJwk.Validate(); err != nil {
+		return fmt.Errorf("failed to validate public JWK: %v", err)
+	}
+
+	// TODO: create .well-known JWKS endpoint with json
+	r.HandleFunc("/.well-known/jwks.json", func(w http.ResponseWriter, r *http.Request) {
+		// TODO: generate new JWKs from a private key
+
+		jwks := map[string]any{
+			"keys": []jwk.Key{
+				publicJwk,
+			},
+		}
+		b, err := json.Marshal(jwks)
+		if err != nil {
+			return
+		}
+		w.Write(b)
+	})
+
+	// TODO: create .well-known openid configuration
+	r.HandleFunc("/.well-known/openid-configuration", func(w http.ResponseWriter, r *http.Request) {
+		// create config JSON to serve with GET request
+		config := map[string]any{
+			"issuer":                 "http://" + s.Addr,
+			"authorization_endpoint": "http://" + s.Addr + "/oauth/authorize",
+			"token_endpoint":         "http://" + s.Addr + "/oauth/token",
+			"jwks_uri":               "http://" + s.Addr + "/.well-known/jwks.json",
+			"scopes_supported": []string{
+				"openid",
+				"profile",
+				"email",
+			},
+			"response_types_supported": []string{
+				"code",
+			},
+			"grant_types_supported": []string{
+				"authorization_code",
+			},
+			"id_token_signing_alg_values_supported": []string{
+				"RS256",
+			},
+			"claims_supported": []string{
+				"iss",
+				"sub",
+				"aud",
+				"exp",
+				"iat",
+				"name",
+				"email",
+			},
+		}
+
+		b, err := json.Marshal(config)
+		if err != nil {
+			return
+		}
+		w.Write(b)
+	})
+	r.HandleFunc("/register", func(w http.ResponseWriter, r *http.Request) {
+		// serve up a simple login page
+	})
+	r.HandleFunc("/consent", func(w http.ResponseWriter, r *http.Request) {
+		// give consent for app to use
+	})
+	r.HandleFunc("/browser/login", func(w http.ResponseWriter, r *http.Request) {
+		// serve up a login page for user creds
+		form, err := os.ReadFile("pages/login.html")
+		if err != nil {
+			fmt.Printf("failed to load login form: %v", err)
+		}
+		w.Write(form)
+	})
+	r.HandleFunc("/api/login", func(w http.ResponseWriter, r *http.Request) {
+		// check for example identity with POST request
+		r.ParseForm()
+		username := r.Form.Get("username")
+		password := r.Form.Get("password")
+
+		// example username and password so do simplified authorization code flow
+		if username == "ochami" && password == "ochami" {
+			client := oauth.Client{
+				Id:     "ochami",
+				Secret: "ochami",
+				Name:   "ochami",
+				Provider: oidc.IdentityProvider{
+					Issuer: "http://127.0.0.1:3333",
+				},
+				RedirectUris: []string{fmt.Sprintf("http://%s:%d%s", s.Host, s.Port, callback)},
+			}
+
+			// check if there are any redirect URIs supplied
+			if len(client.RedirectUris) <= 0 {
+				fmt.Printf("no redirect URIs found")
+				return
+			}
+			for _, url := range client.RedirectUris {
+				// send an authorization code to each URI
+				code := util.RandomString(64)
+				activeCodes = append(activeCodes, code)
+				redirectUrl := fmt.Sprintf("%s?code=%s", url, code)
+				fmt.Printf("redirect URL: %s\n", redirectUrl)
+				http.Redirect(w, r, redirectUrl, http.StatusFound)
+				// _, _, err := httpx.MakeHttpRequest(fmt.Sprintf("%s?code=%s", url, code), http.MethodGet, nil, nil)
+				// if err != nil {
+				// 	fmt.Printf("failed to make request: %v\n", err)
+				// 	continue
+				// }
+			}
+		} else {
+			w.Write([]byte("error logging in"))
+			http.Redirect(w, r, "/browser/login", http.StatusUnauthorized)
+		}
+	})
+	r.HandleFunc("/oauth/token", func(w http.ResponseWriter, r *http.Request) {
+		r.ParseForm()
+
+		// check for authorization code and make sure it's valid
+		var code = r.Form.Get("code")
+		index := slices.IndexFunc(activeCodes, func(s string) bool { return s == code })
+		if index < 0 {
+			fmt.Printf("invalid authorization code: %s\n", code)
+			return
+		}
+
+		// now create and return a JWT that can be verified with by authorization server
+		iat := time.Now().Unix()
+		exp := time.Now().Add(time.Second * 3600 * 16).Unix()
+		t := jwt.New()
+		t.Set(jwt.IssuerKey, s.Addr)
+		t.Set(jwt.SubjectKey, "ochami")
+		t.Set(jwt.AudienceKey, "ochami")
+		t.Set(jwt.IssuedAtKey, iat)
+		t.Set(jwt.ExpirationKey, exp)
+		t.Set("name", "ochami")
+		t.Set("email", "example@ochami.org")
+		t.Set("email_verified", true)
+		t.Set("scope", []string{
+			"openid",
+			"profile",
+			"email",
+			"example",
+		})
+		// payload := map[string]any{}
+		// payload["iss"] = s.Addr
+		// payload["aud"] = "ochami"
+		// payload["iat"] = iat
+		// payload["nbf"] = iat
+		// payload["exp"] = exp
+		// payload["sub"] = "ochami"
+		// payload["name"] = "ochami"
+		// payload["email"] = "example@ochami.org"
+		// payload["email_verified"] = true
+		// payload["scope"] = []string{
+		// 	"openid",
+		// 	"profile",
+		// 	"email",
+		// 	"example",
+		// }
+		payloadJson, err := json.MarshalIndent(t, "", "\t")
+		if err != nil {
+			fmt.Printf("failed to marshal payload: %v", err)
+			return
+		}
+		signed, err := jws.Sign(payloadJson, jws.WithKey(jwa.RS256, privateJwk))
+		if err != nil {
+			fmt.Printf("failed to sign token: %v\n", err)
+			return
+		}
+
+		// construct the bearer token with required fields
+		scope, _ := t.Get("scope")
+		bearer := map[string]any{
+			"token_type": "Bearer",
+			"id_token":   string(signed),
+			"expires_in": exp,
+			"created_at": iat,
+			"scope":      strings.Join(scope.([]string), " "),
+		}
+
+		b, err := json.MarshalIndent(bearer, "", "\t")
+		if err != nil {
+			fmt.Printf("failed to marshal bearer token: %v\n", err)
+			return
+		}
+		fmt.Printf("bearer: %s\n", string(b))
+		w.Write(b)
+	})
+	r.HandleFunc("/oauth/authorize", func(w http.ResponseWriter, r *http.Request) {
+		var (
+			responseType = r.URL.Query().Get("response_type")
+			clientId     = r.URL.Query().Get("client_id")
+			redirectUris = r.URL.Query().Get("redirect_uri")
+		)
+
+		// check for required authorization code params
+		if responseType != "code" {
+			fmt.Printf("invalid response type\n")
+			return
+		}
+
+		// check that we're using the default registered client
+		if clientId != "ochami" {
+			fmt.Printf("invalid client\n")
+			return
+		}
+
+		// TODO: check that our redirect URIs all match
+		for _, uri := range redirectUris {
+			_ = uri
+		}
+
+		// redirect to browser login since we don't do session management here
+		http.Redirect(w, r, "/browser/login", http.StatusFound)
+	})
+
+	s.Handler = r
+	return s.ListenAndServe()
+}
+
 func makeButton(url string, text string) string {
 	// check if we have http:// a
 	// html := "<input type=\"button\" "

pages/login.html

@@ -7,7 +7,7 @@
 			<input type="password" id="password" name="password" title="password" placeholder="Enter your password..." /><br/>
 			<button type="submit" class="btn">Login</button><br/>
 			<a class="forgot" href="#">Forgot Username?</a><br/>
-			<label>(hint: try 'openchami' for both username and password)</label>
+			<label>(hint: try 'ochami' for both username and password)</label>
 		</form>
 	</div><!--end log form -->
 </html>