/
default_op.go
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/
default_op.go
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package op
import (
"context"
"errors"
"net/http"
"time"
"github.com/gorilla/schema"
"gopkg.in/square/go-jose.v2"
"github.com/caos/logging"
"github.com/caos/oidc/pkg/oidc"
"github.com/caos/oidc/pkg/rp"
)
const (
defaultAuthorizationEndpoint = "authorize"
defaulTokenEndpoint = "oauth/token"
defaultIntrospectEndpoint = "introspect"
defaultUserinfoEndpoint = "userinfo"
defaultEndSessionEndpoint = "end_session"
defaultKeysEndpoint = "keys"
AuthMethodBasic AuthMethod = "client_secret_basic"
AuthMethodPost = "client_secret_post"
AuthMethodNone = "none"
CodeMethodS256 = "S256"
)
var (
DefaultEndpoints = &endpoints{
Authorization: NewEndpoint(defaultAuthorizationEndpoint),
Token: NewEndpoint(defaulTokenEndpoint),
Introspection: NewEndpoint(defaultIntrospectEndpoint),
Userinfo: NewEndpoint(defaultUserinfoEndpoint),
EndSession: NewEndpoint(defaultEndSessionEndpoint),
JwksURI: NewEndpoint(defaultKeysEndpoint),
}
)
type DefaultOP struct {
config *Config
endpoints *endpoints
storage Storage
signer Signer
verifier rp.Verifier
crypto Crypto
http http.Handler
decoder *schema.Decoder
encoder *schema.Encoder
interceptor HttpInterceptor
retry func(int) (bool, int)
timer <-chan time.Time
}
type Config struct {
Issuer string
CryptoKey [32]byte
DefaultLogoutRedirectURI string
CodeMethodS256 bool
// ScopesSupported: oidc.SupportedScopes,
// ResponseTypesSupported: responseTypes,
// GrantTypesSupported: oidc.SupportedGrantTypes,
// ClaimsSupported: oidc.SupportedClaims,
// IdTokenSigningAlgValuesSupported: []string{keys.SigningAlgorithm},
// SubjectTypesSupported: []string{"public"},
// TokenEndpointAuthMethodsSupported:
}
type endpoints struct {
Authorization Endpoint
Token Endpoint
Introspection Endpoint
Userinfo Endpoint
EndSession Endpoint
CheckSessionIframe Endpoint
JwksURI Endpoint
}
type DefaultOPOpts func(o *DefaultOP) error
func WithCustomAuthEndpoint(endpoint Endpoint) DefaultOPOpts {
return func(o *DefaultOP) error {
if err := endpoint.Validate(); err != nil {
return err
}
o.endpoints.Authorization = endpoint
return nil
}
}
func WithCustomTokenEndpoint(endpoint Endpoint) DefaultOPOpts {
return func(o *DefaultOP) error {
if err := endpoint.Validate(); err != nil {
return err
}
o.endpoints.Token = endpoint
return nil
}
}
func WithCustomUserinfoEndpoint(endpoint Endpoint) DefaultOPOpts {
return func(o *DefaultOP) error {
if err := endpoint.Validate(); err != nil {
return err
}
o.endpoints.Userinfo = endpoint
return nil
}
}
func WithCustomEndSessionEndpoint(endpoint Endpoint) DefaultOPOpts {
return func(o *DefaultOP) error {
if err := endpoint.Validate(); err != nil {
return err
}
o.endpoints.EndSession = endpoint
return nil
}
}
func WithCustomKeysEndpoint(endpoint Endpoint) DefaultOPOpts {
return func(o *DefaultOP) error {
if err := endpoint.Validate(); err != nil {
return err
}
o.endpoints.JwksURI = endpoint
return nil
}
}
func WithHttpInterceptor(h HttpInterceptor) DefaultOPOpts {
return func(o *DefaultOP) error {
o.interceptor = h
return nil
}
}
func WithRetry(max int, sleep time.Duration) DefaultOPOpts {
return func(o *DefaultOP) error {
o.retry = func(count int) (bool, int) {
count++
if count == max {
return false, count
}
time.Sleep(sleep)
return true, count
}
return nil
}
}
func WithTimer(timer <-chan time.Time) DefaultOPOpts {
return func(o *DefaultOP) error {
o.timer = timer
return nil
}
}
func NewDefaultOP(ctx context.Context, config *Config, storage Storage, opOpts ...DefaultOPOpts) (OpenIDProvider, error) {
err := ValidateIssuer(config.Issuer)
if err != nil {
return nil, err
}
p := &DefaultOP{
config: config,
storage: storage,
endpoints: DefaultEndpoints,
timer: make(<-chan time.Time),
}
for _, optFunc := range opOpts {
if err := optFunc(p); err != nil {
return nil, err
}
}
keyCh := make(chan jose.SigningKey)
p.signer = NewDefaultSigner(ctx, storage, keyCh)
go p.ensureKey(ctx, storage, keyCh, p.timer)
p.verifier = rp.NewDefaultVerifier(config.Issuer, "", p, rp.WithIgnoreAudience(), rp.WithIgnoreExpiration())
p.http = CreateRouter(p, p.interceptor)
p.decoder = schema.NewDecoder()
p.decoder.IgnoreUnknownKeys(true)
p.encoder = schema.NewEncoder()
p.crypto = NewAESCrypto(config.CryptoKey)
return p, nil
}
func (p *DefaultOP) Issuer() string {
return p.config.Issuer
}
func (p *DefaultOP) AuthorizationEndpoint() Endpoint {
return p.endpoints.Authorization
}
func (p *DefaultOP) TokenEndpoint() Endpoint {
return Endpoint(p.endpoints.Token)
}
func (p *DefaultOP) UserinfoEndpoint() Endpoint {
return Endpoint(p.endpoints.Userinfo)
}
func (p *DefaultOP) EndSessionEndpoint() Endpoint {
return Endpoint(p.endpoints.EndSession)
}
func (p *DefaultOP) KeysEndpoint() Endpoint {
return Endpoint(p.endpoints.JwksURI)
}
func (p *DefaultOP) AuthMethodPostSupported() bool {
return true //TODO: config
}
func (p *DefaultOP) CodeMethodS256Supported() bool {
return p.config.CodeMethodS256
}
func (p *DefaultOP) HttpHandler() http.Handler {
return p.http
}
func (p *DefaultOP) HandleDiscovery(w http.ResponseWriter, r *http.Request) {
Discover(w, CreateDiscoveryConfig(p, p.Signer()))
}
func (p *DefaultOP) VerifySignature(ctx context.Context, jws *jose.JSONWebSignature) ([]byte, error) {
keyID := ""
for _, sig := range jws.Signatures {
keyID = sig.Header.KeyID
break
}
keySet, err := p.Storage().GetKeySet(ctx)
if err != nil {
return nil, errors.New("error fetching keys")
}
payload, err, ok := rp.CheckKey(keyID, keySet.Keys, jws)
if !ok {
return nil, errors.New("invalid kid")
}
return payload, err
}
func (p *DefaultOP) Decoder() *schema.Decoder {
return p.decoder
}
func (p *DefaultOP) Encoder() *schema.Encoder {
return p.encoder
}
func (p *DefaultOP) Storage() Storage {
return p.storage
}
func (p *DefaultOP) Signer() Signer {
return p.signer
}
func (p *DefaultOP) Crypto() Crypto {
return p.crypto
}
func (p *DefaultOP) HandleReady(w http.ResponseWriter, r *http.Request) {
probes := []ProbesFn{
ReadySigner(p.Signer()),
ReadyStorage(p.Storage()),
}
Readiness(w, r, probes...)
}
func (p *DefaultOP) HandleKeys(w http.ResponseWriter, r *http.Request) {
Keys(w, r, p)
}
func (p *DefaultOP) HandleAuthorize(w http.ResponseWriter, r *http.Request) {
Authorize(w, r, p)
}
func (p *DefaultOP) HandleAuthorizeCallback(w http.ResponseWriter, r *http.Request) {
AuthorizeCallback(w, r, p)
}
func (p *DefaultOP) HandleExchange(w http.ResponseWriter, r *http.Request) {
reqType := r.FormValue("grant_type")
if reqType == "" {
RequestError(w, r, ErrInvalidRequest("grant_type missing"))
return
}
if reqType == string(oidc.GrantTypeCode) {
CodeExchange(w, r, p)
return
}
TokenExchange(w, r, p)
}
func (p *DefaultOP) HandleUserinfo(w http.ResponseWriter, r *http.Request) {
Userinfo(w, r, p)
}
func (p *DefaultOP) HandleEndSession(w http.ResponseWriter, r *http.Request) {
EndSession(w, r, p)
}
func (p *DefaultOP) DefaultLogoutRedirectURI() string {
return p.config.DefaultLogoutRedirectURI
}
func (p *DefaultOP) IDTokenVerifier() rp.Verifier {
return p.verifier
}
func (p *DefaultOP) ensureKey(ctx context.Context, storage Storage, keyCh chan<- jose.SigningKey, timer <-chan time.Time) {
count := 0
timer = time.After(0)
errCh := make(chan error)
go storage.GetSigningKey(ctx, keyCh, errCh, timer)
for {
select {
case <-ctx.Done():
return
case err := <-errCh:
if err == nil {
continue
}
_, ok := err.(StorageNotFoundError)
if ok {
err := storage.SaveNewKeyPair(ctx)
if err == nil {
continue
}
}
ok, count = p.retry(count)
if ok {
timer = time.After(0)
continue
}
logging.Log("OP-n6ynVE").WithError(err).Panic("error in key signer")
}
}
}