Allow item status 425 "too early" for items when changing metadata

Fixes the upload behavior with ownCloud Infinite Scale

backend/webdav/api/types.go

@@ -82,26 +82,37 @@ type Prop struct {
 // Parse a status of the form "HTTP/1.1 200 OK" or "HTTP/1.1 200"
 var parseStatus = regexp.MustCompile(`^HTTP/[0-9.]+\s+(\d+)`)
 
-// StatusOK examines the Status and returns an OK flag
-func (p *Prop) StatusOK() bool {
-	// Assume OK if no statuses received
+// Code extracts the status code from the first status
+func (p *Prop) Code() int {
 	if len(p.Status) == 0 {
-		return true
+		return -1
 	}
 	match := parseStatus.FindStringSubmatch(p.Status[0])
 	if len(match) < 2 {
-		return false
+		return 0
 	}
 	code, err := strconv.Atoi(match[1])
 	if err != nil {
+		return 0
+	}
+	return code
+}
+
+// StatusOK examines the Status and returns an OK flag
+func (p *Prop) StatusOK() bool {
+	// Fetch status code as int
+	c := p.Code()
+
+	// Assume OK if no statuses received
+	if c == -1 {
+		return true
+	}
+	if c == 0 {
 		return false
 	}
-	// allow status 425 "too early" for files still in postprocessing
-	if code == 425 {
-		return true
-	}
-	if code >= 200 && code < 300 {
+	if c >= 200 && c < 300 {
 		return true
+
 	}
 	return false
 }

backend/webdav/webdav.go

@@ -356,7 +356,8 @@ func (f *Fs) readMetaDataForPath(ctx context.Context, path string, depth string)
 		return nil, fs.ErrorObjectNotFound
 	}
 	item := result.Responses[0]
-	if !item.Props.StatusOK() {
+	// status code 425 is accepted here as well
+	if !(item.Props.StatusOK() || item.Props.Code() == 425) {
 		return nil, fs.ErrorObjectNotFound
 	}
 	if itemIsDir(&item) {