diff --git a/code/rest/dav_service.go b/code/rest/dav_service.go
index 56e4799..26ecf9b 100644
--- a/code/rest/dav_service.go
+++ b/code/rest/dav_service.go
@@ -155,6 +155,7 @@ func (this *DavService) HandlePropfind(writer http.ResponseWriter, request *http
 
 	fmt.Printf("PROPFIND %s\n", subPath)
 
+	// read depth
 	depth := this.ParseDepth(request)
 
 	propfind := dav.ReadPropfind(request.Body)
diff --git a/code/tool/webdav/webdav.go b/code/tool/webdav/webdav.go
index d88995f..8f16ee4 100644
--- a/code/tool/webdav/webdav.go
+++ b/code/tool/webdav/webdav.go
@@ -526,7 +526,7 @@ func (h *Handler) handlePropfind(w http.ResponseWriter, r *http.Request) (status
 			return http.StatusBadRequest, errInvalidDepth
 		}
 	}
-	pf, status, err := readPropfind(r.Body)
+	pf, status, err := ReadPropfind(r.Body)
 	if err != nil {
 		return status, err
 	}
diff --git a/code/tool/webdav/xml.go b/code/tool/webdav/xml.go
index febaec3..67fe83c 100644
--- a/code/tool/webdav/xml.go
+++ b/code/tool/webdav/xml.go
@@ -134,13 +134,13 @@ func next(d *ixml.Decoder) (ixml.Token, error) {
 }
 
 // http://www.webdav.org/specs/rfc4918.html#ELEMENT_prop (for propfind)
-type propfindProps []xml.Name
+type PropfindProps []xml.Name
 
 // UnmarshalXML appends the property names enclosed within start to pn.
 //
 // It returns an error if start does not contain any properties or if
 // properties contain values. Character data between properties is ignored.
-func (pn *propfindProps) UnmarshalXML(d *ixml.Decoder, start ixml.StartElement) error {
+func (pn *PropfindProps) UnmarshalXML(d *ixml.Decoder, start ixml.StartElement) error {
 	for {
 		t, err := next(d)
 		if err != nil {
@@ -167,39 +167,39 @@ func (pn *propfindProps) UnmarshalXML(d *ixml.Decoder, start ixml.StartElement)
 }
 
 // http://www.webdav.org/specs/rfc4918.html#ELEMENT_propfind
-type propfind struct {
+type Propfind struct {
 	XMLName  ixml.Name     `xml:"DAV: propfind"`
 	Allprop  *struct{}     `xml:"DAV: allprop"`
 	Propname *struct{}     `xml:"DAV: propname"`
-	Prop     propfindProps `xml:"DAV: prop"`
-	Include  propfindProps `xml:"DAV: include"`
+	Prop     PropfindProps `xml:"DAV: prop"`
+	Include  PropfindProps `xml:"DAV: include"`
 }
 
-func readPropfind(r io.Reader) (pf propfind, status int, err error) {
+func ReadPropfind(r io.Reader) (pf Propfind, status int, err error) {
 	c := countingReader{r: r}
 	if err = ixml.NewDecoder(&c).Decode(&pf); err != nil {
 		if err == io.EOF {
 			if c.n == 0 {
 				// An empty body means to propfind allprop.
 				// http://www.webdav.org/specs/rfc4918.html#METHOD_PROPFIND
-				return propfind{Allprop: new(struct{})}, 0, nil
+				return Propfind{Allprop: new(struct{})}, 0, nil
 			}
 			err = errInvalidPropfind
 		}
-		return propfind{}, http.StatusBadRequest, err
+		return Propfind{}, http.StatusBadRequest, err
 	}
 
 	if pf.Allprop == nil && pf.Include != nil {
-		return propfind{}, http.StatusBadRequest, errInvalidPropfind
+		return Propfind{}, http.StatusBadRequest, errInvalidPropfind
 	}
 	if pf.Allprop != nil && (pf.Prop != nil || pf.Propname != nil) {
-		return propfind{}, http.StatusBadRequest, errInvalidPropfind
+		return Propfind{}, http.StatusBadRequest, errInvalidPropfind
 	}
 	if pf.Prop != nil && pf.Propname != nil {
-		return propfind{}, http.StatusBadRequest, errInvalidPropfind
+		return Propfind{}, http.StatusBadRequest, errInvalidPropfind
 	}
 	if pf.Propname == nil && pf.Allprop == nil && pf.Prop == nil {
-		return propfind{}, http.StatusBadRequest, errInvalidPropfind
+		return Propfind{}, http.StatusBadRequest, errInvalidPropfind
 	}
 	return pf, 0, nil
 }
diff --git a/code/tool/webdav/xml_test.go b/code/tool/webdav/xml_test.go
index e191afb..50b8452 100644
--- a/code/tool/webdav/xml_test.go
+++ b/code/tool/webdav/xml_test.go
@@ -139,7 +139,7 @@ func TestReadPropfind(t *testing.T) {
 	testCases := []struct {
 		desc       string
 		input      string
-		wantPF     propfind
+		wantPF     Propfind
 		wantStatus int
 	}{{
 		desc: "propfind: propname",
@@ -147,14 +147,14 @@ func TestReadPropfind(t *testing.T) {
 			"<A:propfind xmlns:A='DAV:'>\n" +
 			"  <A:propname/>\n" +
 			"</A:propfind>",
-		wantPF: propfind{
+		wantPF: Propfind{
 			XMLName:  ixml.Name{Space: "DAV:", Local: "propfind"},
 			Propname: new(struct{}),
 		},
 	}, {
 		desc:  "propfind: empty body means allprop",
 		input: "",
-		wantPF: propfind{
+		wantPF: Propfind{
 			Allprop: new(struct{}),
 		},
 	}, {
@@ -163,7 +163,7 @@ func TestReadPropfind(t *testing.T) {
 			"<A:propfind xmlns:A='DAV:'>\n" +
 			"   <A:allprop/>\n" +
 			"</A:propfind>",
-		wantPF: propfind{
+		wantPF: Propfind{
 			XMLName: ixml.Name{Space: "DAV:", Local: "propfind"},
 			Allprop: new(struct{}),
 		},
@@ -174,10 +174,10 @@ func TestReadPropfind(t *testing.T) {
 			"  <A:allprop/>\n" +
 			"  <A:include><A:displayname/></A:include>\n" +
 			"</A:propfind>",
-		wantPF: propfind{
+		wantPF: Propfind{
 			XMLName: ixml.Name{Space: "DAV:", Local: "propfind"},
 			Allprop: new(struct{}),
-			Include: propfindProps{xml.Name{Space: "DAV:", Local: "displayname"}},
+			Include: PropfindProps{xml.Name{Space: "DAV:", Local: "displayname"}},
 		},
 	}, {
 		desc: "propfind: include followed by allprop",
@@ -186,10 +186,10 @@ func TestReadPropfind(t *testing.T) {
 			"  <A:include><A:displayname/></A:include>\n" +
 			"  <A:allprop/>\n" +
 			"</A:propfind>",
-		wantPF: propfind{
+		wantPF: Propfind{
 			XMLName: ixml.Name{Space: "DAV:", Local: "propfind"},
 			Allprop: new(struct{}),
-			Include: propfindProps{xml.Name{Space: "DAV:", Local: "displayname"}},
+			Include: PropfindProps{xml.Name{Space: "DAV:", Local: "displayname"}},
 		},
 	}, {
 		desc: "propfind: propfind",
@@ -197,9 +197,9 @@ func TestReadPropfind(t *testing.T) {
 			"<A:propfind xmlns:A='DAV:'>\n" +
 			"  <A:prop><A:displayname/></A:prop>\n" +
 			"</A:propfind>",
-		wantPF: propfind{
+		wantPF: Propfind{
 			XMLName: ixml.Name{Space: "DAV:", Local: "propfind"},
-			Prop:    propfindProps{xml.Name{Space: "DAV:", Local: "displayname"}},
+			Prop:    PropfindProps{xml.Name{Space: "DAV:", Local: "displayname"}},
 		},
 	}, {
 		desc: "propfind: prop with ignored comments",
@@ -210,9 +210,9 @@ func TestReadPropfind(t *testing.T) {
 			"    <A:displayname><!-- ignore --></A:displayname>\n" +
 			"  </A:prop>\n" +
 			"</A:propfind>",
-		wantPF: propfind{
+		wantPF: Propfind{
 			XMLName: ixml.Name{Space: "DAV:", Local: "propfind"},
-			Prop:    propfindProps{xml.Name{Space: "DAV:", Local: "displayname"}},
+			Prop:    PropfindProps{xml.Name{Space: "DAV:", Local: "displayname"}},
 		},
 	}, {
 		desc: "propfind: propfind with ignored whitespace",
@@ -220,9 +220,9 @@ func TestReadPropfind(t *testing.T) {
 			"<A:propfind xmlns:A='DAV:'>\n" +
 			"  <A:prop>   <A:displayname/></A:prop>\n" +
 			"</A:propfind>",
-		wantPF: propfind{
+		wantPF: Propfind{
 			XMLName: ixml.Name{Space: "DAV:", Local: "propfind"},
-			Prop:    propfindProps{xml.Name{Space: "DAV:", Local: "displayname"}},
+			Prop:    PropfindProps{xml.Name{Space: "DAV:", Local: "displayname"}},
 		},
 	}, {
 		desc: "propfind: propfind with ignored mixed-content",
@@ -230,9 +230,9 @@ func TestReadPropfind(t *testing.T) {
 			"<A:propfind xmlns:A='DAV:'>\n" +
 			"  <A:prop>foo<A:displayname/>bar</A:prop>\n" +
 			"</A:propfind>",
-		wantPF: propfind{
+		wantPF: Propfind{
 			XMLName: ixml.Name{Space: "DAV:", Local: "propfind"},
-			Prop:    propfindProps{xml.Name{Space: "DAV:", Local: "displayname"}},
+			Prop:    PropfindProps{xml.Name{Space: "DAV:", Local: "displayname"}},
 		},
 	}, {
 		desc: "propfind: propname with ignored element (section A.4)",
@@ -241,7 +241,7 @@ func TestReadPropfind(t *testing.T) {
 			"  <A:propname/>\n" +
 			"  <E:leave-out xmlns:E='E:'>*boss*</E:leave-out>\n" +
 			"</A:propfind>",
-		wantPF: propfind{
+		wantPF: Propfind{
 			XMLName:  ixml.Name{Space: "DAV:", Local: "propfind"},
 			Propname: new(struct{}),
 		},
@@ -330,7 +330,7 @@ func TestReadPropfind(t *testing.T) {
 	}}
 
 	for _, tc := range testCases {
-		pf, status, err := readPropfind(strings.NewReader(tc.input))
+		pf, status, err := ReadPropfind(strings.NewReader(tc.input))
 		if tc.wantStatus != 0 {
 			if err == nil {
 				t.Errorf("%s: got nil error, want non-nil", tc.desc)