Remove third party rice boxes

Former-commit-id: b52f339d7a13e12d6e7d194a4e5ce4dabae7b61c [formerly 8ee8ebe7d1133b8ca7c46854a31a0a711b5579fc] [formerly 05100c5f169e072f21204537f4d8ddaf2f821377 [formerly 3c821a541373fc8e6b0323bb6abe5a0447931694]]
Former-commit-id: e5d5c4ac1d7518d8032ace12bf5efe26d0502a6b [formerly ea15d87d509cc85d2865d9a249acd15975dfa43d]
Former-commit-id: 08848510019b280a91a61156e88f5b914d4f8d88

webdav.go

@@ -0,0 +1,74 @@
+package filemanager
+
+import (
+	"net/http"
+	"os"
+	"path/filepath"
+	"strings"
+)
+
+// serveWebDAV handles the webDAV route of the File Manager.
+func serveWebDAV(w http.ResponseWriter, r *http.Request, m *FileManager, u *User) (int, error) {
+	var err error
+
+	// Checks for user permissions relatively to this path.
+	if !u.Allowed(strings.TrimPrefix(r.URL.Path, m.WebDavURL)) {
+		return http.StatusForbidden, nil
+	}
+
+	switch r.Method {
+	case "GET", "HEAD":
+		// Excerpt from RFC4918, section 9.4:
+		//
+		// 		GET, when applied to a collection, may return the contents of an
+		//		"index.html" resource, a human-readable view of the contents of
+		//		the collection, or something else altogether.
+		//
+		// It was decided on https://github.com/hacdias/caddy-filemanager/issues/85
+		// that GET, for collections, will return the same as PROPFIND method.
+		path := strings.Replace(r.URL.Path, m.WebDavURL, "", 1)
+		path = u.scope + "/" + path
+		path = filepath.Clean(path)
+
+		var i os.FileInfo
+		i, err = os.Stat(path)
+		if err != nil {
+			// Is there any error? WebDav will handle it... no worries.
+			break
+		}
+
+		if i.IsDir() {
+			r.Method = "PROPFIND"
+
+			if r.Method == "HEAD" {
+				w = newResponseWriterNoBody(w)
+			}
+		}
+	case "PROPPATCH", "MOVE", "PATCH", "PUT", "DELETE":
+		if !u.AllowEdit {
+			return http.StatusForbidden, nil
+		}
+	case "MKCOL", "COPY":
+		if !u.AllowNew {
+			return http.StatusForbidden, nil
+		}
+	}
+
+	// Preprocess the PUT request if it's the case
+	if r.Method == http.MethodPut {
+		if err = m.BeforeSave(r, m, u); err != nil {
+			return http.StatusInternalServerError, err
+		}
+
+		if put(w, r, m, u) != nil {
+			return http.StatusInternalServerError, err
+		}
+	}
+
+	m.handler.ServeHTTP(w, r)
+	if err = m.AfterSave(r, m, u); err != nil {
+		return http.StatusInternalServerError, err
+	}
+
+	return 0, nil
+}