func (c *AuthConfig) getAuthenticationHandler(mux cmdutil.Mux, errorHandler handlers.AuthenticationErrorHandler) (handlers.AuthenticationHandler, error) {
// TODO: make this ordered once we can have more than one
challengers := map[string]handlers.AuthenticationChallenger{}
redirectors := new(handlers.AuthenticationRedirectors)
// Determine if we have more than one password-based Identity Provider
multiplePasswordProviders := false
passwordProviderCount := 0
for _, identityProvider := range c.Options.IdentityProviders {
if configapi.IsPasswordAuthenticator(identityProvider) && identityProvider.UseAsLogin {
passwordProviderCount++
if passwordProviderCount > 1 {
multiplePasswordProviders = true
break
}
}
}
for _, identityProvider := range c.Options.IdentityProviders {
identityMapper, err := identitymapper.NewIdentityUserMapper(c.IdentityRegistry, c.UserRegistry, identitymapper.MappingMethodType(identityProvider.MappingMethod))
if err != nil {
return nil, err
}
// TODO: refactor handler building per type
if configapi.IsPasswordAuthenticator(identityProvider) {
passwordAuth, err := c.getPasswordAuthenticator(identityProvider)
if err != nil {
return nil, err
}
if identityProvider.UseAsLogin {
// Password auth requires:
// 1. a session success handler (to remember you logged in)
// 2. a redirectSuccessHandler (to go back to the "then" param)
if c.SessionAuth == nil {
return nil, errors.New("SessionAuth is required for password-based login")
}
passwordSuccessHandler := handlers.AuthenticationSuccessHandlers{c.SessionAuth, redirectSuccessHandler{}}
var (
// loginPath is unescaped, the way the mux will see it once URL-decoding is done
loginPath = openShiftLoginPrefix
// redirectLoginPath is escaped, the way we would need to send a Location redirect to a client
redirectLoginPath = openShiftLoginPrefix
)
if multiplePasswordProviders {
// If there is more than one Identity Provider acting as a login
// provider, we need to give each of them their own login path,
// to avoid ambiguity.
loginPath = path.Join(openShiftLoginPrefix, identityProvider.Name)
// url-encode the provider name for redirecting
redirectLoginPath = path.Join(openShiftLoginPrefix, (&url.URL{Path: identityProvider.Name}).String())
}
// Since we're redirecting to a local login page, we don't need to force absolute URL resolution
redirectors.Add(identityProvider.Name, redirector.NewRedirector(nil, redirectLoginPath+"?then=${url}"))
var loginTemplateFile string
if c.Options.Templates != nil {
loginTemplateFile = c.Options.Templates.Login
}
loginFormRenderer, err := login.NewLoginFormRenderer(loginTemplateFile)
if err != nil {
return nil, err
}
login := login.NewLogin(identityProvider.Name, c.getCSRF(), &callbackPasswordAuthenticator{passwordAuth, passwordSuccessHandler}, loginFormRenderer)
login.Install(mux, loginPath)
}
if identityProvider.UseAsChallenger {
// For now, all password challenges share a single basic challenger, since they'll all respond to any basic credentials
challengers["basic-challenge"] = passwordchallenger.NewBasicAuthChallenger("openshift")
}
} else if configapi.IsOAuthIdentityProvider(identityProvider) {
oauthProvider, err := c.getOAuthProvider(identityProvider)
if err != nil {
return nil, err
}
// Default state builder, combining CSRF and return URL handling
state := external.CSRFRedirectingState(c.getCSRF())
// OAuth auth requires
// 1. a session success handler (to remember you logged in)
// 2. a state success handler (to go back to the URL encoded in the state)
if c.SessionAuth == nil {
return nil, errors.New("SessionAuth is required for OAuth-based login")
}
oauthSuccessHandler := handlers.AuthenticationSuccessHandlers{c.SessionAuth, state}
// If the specified errorHandler doesn't handle the login error, let the state error handler attempt to propagate specific errors back to the token requester
oauthErrorHandler := handlers.AuthenticationErrorHandlers{errorHandler, state}
callbackPath := path.Join(OpenShiftOAuthCallbackPrefix, identityProvider.Name)
oauthRedirector, oauthHandler, err := external.NewExternalOAuthRedirector(oauthProvider, state, c.Options.MasterPublicURL+callbackPath, oauthSuccessHandler, oauthErrorHandler, identityMapper)
if err != nil {
return nil, fmt.Errorf("unexpected error: %v", err)
}
mux.Handle(callbackPath, oauthHandler)
if identityProvider.UseAsLogin {
redirectors.Add(identityProvider.Name, oauthRedirector)
}
if identityProvider.UseAsChallenger {
// For now, all password challenges share a single basic challenger, since they'll all respond to any basic credentials
challengers["basic-challenge"] = passwordchallenger.NewBasicAuthChallenger("openshift")
}
} else if requestHeaderProvider, isRequestHeader := identityProvider.Provider.(*configapi.RequestHeaderIdentityProvider); isRequestHeader {
// We might be redirecting to an external site, we need to fully resolve the request URL to the public master
baseRequestURL, err := url.Parse(c.Options.MasterPublicURL + OpenShiftOAuthAPIPrefix + osinserver.AuthorizePath)
if err != nil {
return nil, err
}
if identityProvider.UseAsChallenger {
challengers["requestheader-"+identityProvider.Name+"-redirect"] = redirector.NewChallenger(baseRequestURL, requestHeaderProvider.ChallengeURL)
}
if identityProvider.UseAsLogin {
redirectors.Add(identityProvider.Name, redirector.NewRedirector(baseRequestURL, requestHeaderProvider.LoginURL))
}
}
}
if redirectors.Count() > 0 && len(challengers) == 0 {
// Add a default challenger that will warn and give a link to the web browser token-granting location
challengers["placeholder"] = placeholderchallenger.New(OpenShiftOAuthTokenRequestURL(c.Options.MasterPublicURL))
}
var selectProviderTemplateFile string
if c.Options.Templates != nil {
selectProviderTemplateFile = c.Options.Templates.ProviderSelection
}
selectProviderRenderer, err := selectprovider.NewSelectProviderRenderer(selectProviderTemplateFile)
if err != nil {
return nil, err
}
selectProvider := selectprovider.NewSelectProvider(selectProviderRenderer, c.Options.AlwaysShowProviderSelection)
authHandler := handlers.NewUnionAuthenticationHandler(challengers, redirectors, errorHandler, selectProvider)
return authHandler, nil
}
func TestHandler(t *testing.T) {
redirectors := new(handlers.AuthenticationRedirectors)
redirectors.Add("handler", &Handler{})
_ = handlers.NewUnionAuthenticationHandler(nil, redirectors, nil, nil)
}