switch to go vendoring

vendor/github.com/egirna/icap-client/validate.go

@@ -0,0 +1,63 @@
+package icapclient
+
+import (
+	"errors"
+	"net/http"
+	"net/url"
+)
+
+// validMethod validates the ICAP method
+func validMethod(method string) (bool, error) {
+	if _, registered := registeredMethods[method]; !registered {
+		return false, errors.New(ErrMethodNotRegistered)
+	}
+
+	return true, nil
+}
+
+// validURL validates the Server URL provided
+func validURL(url *url.URL) (bool, error) {
+
+	if url.Scheme != SchemeICAP {
+		return false, errors.New(ErrInvalidScheme)
+	}
+
+	if url.Host == "" {
+		return false, errors.New(ErrInvalidHost)
+	}
+
+	return true, nil
+}
+
+// validMethodWithHTTP validates if the ICAP request method and the http messages are alligned or not
+func validMethodWithHTTP(httpReq *http.Request, httpResp *http.Response, method string) (bool, error) {
+	if method == MethodREQMOD && httpReq == nil {
+		return false, errors.New(ErrREQMODWithNoReq)
+	}
+	if method == MethodREQMOD && httpResp != nil {
+		return false, errors.New(ErrREQMODWithResp)
+	}
+	if method == MethodRESPMOD && httpResp == nil {
+		return false, errors.New(ErrRESPMODWithNoResp)
+	}
+
+	return true, nil
+}
+
+// Validate validates the ICAP request
+func (r *Request) Validate() error {
+
+	if valid, err := validMethod(r.Method); !valid {
+		return err
+	}
+
+	if valid, err := validURL(r.URL); !valid {
+		return err
+	}
+
+	if valid, err := validMethodWithHTTP(r.HTTPRequest, r.HTTPResponse, r.Method); !valid {
+		return err
+	}
+
+	return nil
+}