webdav: add support for allprop and propname in PROPFIND

internal/elements.go

@@ -197,7 +197,9 @@ func (prop *Prop) XMLNames() []xml.Name {
 type Propfind struct {
 	XMLName  xml.Name  `xml:"DAV: propfind"`
 	Prop     *Prop     `xml:"prop,omitempty"`
-	// TODO: propname | (allprop, include?)
+	AllProp  *struct{} `xml:"allprop,omitempty"`
+	Include  *Include  `xml:"include,omitempty"`
+	PropName *struct{} `xml:"propname,omitempty"`
 }
 
 func xmlNamesToRaw(names []xml.Name) []RawXMLValue {
@@ -212,6 +214,12 @@ func NewPropNamePropfind(names ...xml.Name) *Propfind {
 	return &Propfind{Prop: &Prop{Raw: xmlNamesToRaw(names)}}
 }
 
+// https://tools.ietf.org/html/rfc4918#section-14.8
+type Include struct {
+	XMLName xml.Name      `xml:"DAV: include"`
+	Raw     []RawXMLValue `xml:",any"`
+}
+
 // https://tools.ietf.org/html/rfc4918#section-15.9
 type ResourceType struct {
 	XMLName xml.Name      `xml:"DAV: resourcetype"`

server.go

@@ -175,7 +175,32 @@ func (h *Handler) propfind(propfind *internal.Propfind, name string, fi os.FileI
 func (h *Handler) propfindFile(propfind *internal.Propfind, name string, fi os.FileInfo) (*internal.Response, error) {
 	resp := internal.NewOKResponse(name)
 
-	if prop := propfind.Prop; prop != nil {
+	if propfind.PropName != nil {
+		for xmlName, f := range liveProps {
+			emptyVal := internal.NewRawXMLElement(xmlName, nil, nil)
+
+			_, err := f(h, name, fi)
+			if err != nil {
+				continue
+			}
+
+			if err := resp.EncodeProp(http.StatusOK, emptyVal); err != nil {
+				return nil, err
+			}
+		}
+	} else if propfind.AllProp != nil {
+		// TODO: add support for propfind.Include
+		for _, f := range liveProps {
+			val, err := f(h, name, fi)
+			if err != nil {
+				continue
+			}
+
+			if err := resp.EncodeProp(http.StatusOK, val); err != nil {
+				return nil, err
+			}
+		}
+	} else if prop := propfind.Prop; prop != nil {
 		for _, xmlName := range prop.XMLNames() {
 			emptyVal := internal.NewRawXMLElement(xmlName, nil, nil)
 
@@ -202,6 +227,8 @@ func (h *Handler) propfindFile(propfind *internal.Propfind, name string, fi os.F
 				return nil, err
 			}
 		}
+	} else {
+		return nil, HTTPErrorf(http.StatusBadRequest, "webdav: propfind request missing propname, allprop or prop element")
 	}
 
 	return resp, nil