support CAS identity provider

Signed-off-by: hongming <talonwan@yunify.com>

vendor/gopkg.in/cas.v2/url_scheme.go

@@ -0,0 +1,79 @@
+package cas
+
+import (
+	"net/url"
+	"path"
+)
+
+// URLScheme creates the url which are required to handle the cas protocol.
+type URLScheme interface {
+	Login() (*url.URL, error)
+	Logout() (*url.URL, error)
+	Validate() (*url.URL, error)
+	ServiceValidate() (*url.URL, error)
+	RestGrantingTicket() (*url.URL, error)
+	RestServiceTicket(tgt string) (*url.URL, error)
+	RestLogout(tgt string) (*url.URL, error)
+}
+
+// NewDefaultURLScheme creates a URLScheme which uses the cas default urls
+func NewDefaultURLScheme(base *url.URL) *DefaultURLScheme {
+	return &DefaultURLScheme{
+		base:                base,
+		LoginPath:           "login",
+		LogoutPath:          "logout",
+		ValidatePath:        "validate",
+		ServiceValidatePath: "serviceValidate",
+		RestEndpoint:        path.Join("v1", "tickets"),
+	}
+}
+
+// DefaultURLScheme is a configurable URLScheme. Use NewDefaultURLScheme to create DefaultURLScheme with the default cas
+// urls.
+type DefaultURLScheme struct {
+	base                *url.URL
+	LoginPath           string
+	LogoutPath          string
+	ValidatePath        string
+	ServiceValidatePath string
+	RestEndpoint        string
+}
+
+// Login returns the url for the cas login page
+func (scheme *DefaultURLScheme) Login() (*url.URL, error) {
+	return scheme.createURL(scheme.LoginPath)
+}
+
+// Logout returns the url for the cas logut page
+func (scheme *DefaultURLScheme) Logout() (*url.URL, error) {
+	return scheme.createURL(scheme.LogoutPath)
+}
+
+// Validate returns the url for the request validation endpoint
+func (scheme *DefaultURLScheme) Validate() (*url.URL, error) {
+	return scheme.createURL(scheme.ValidatePath)
+}
+
+// ServiceValidate returns the url for the service validation endpoint
+func (scheme *DefaultURLScheme) ServiceValidate() (*url.URL, error) {
+	return scheme.createURL(scheme.ServiceValidatePath)
+}
+
+// RestGrantingTicket returns the url for requesting an granting ticket via rest api
+func (scheme *DefaultURLScheme) RestGrantingTicket() (*url.URL, error) {
+	return scheme.createURL(scheme.RestEndpoint)
+}
+
+// RestServiceTicket returns the url for requesting an service ticket via rest api
+func (scheme *DefaultURLScheme) RestServiceTicket(tgt string) (*url.URL, error) {
+	return scheme.createURL(path.Join(scheme.RestEndpoint, tgt))
+}
+
+// RestLogout returns the url for destroying an granting ticket via rest api
+func (scheme *DefaultURLScheme) RestLogout(tgt string) (*url.URL, error) {
+	return scheme.createURL(path.Join(scheme.RestEndpoint, tgt))
+}
+
+func (scheme *DefaultURLScheme) createURL(urlPath string) (*url.URL, error) {
+	return scheme.base.Parse(path.Join(scheme.base.Path, urlPath))
+}