fix(dav): crtime parsing and invalid date handling

Signed-off-by: skjnldsv <skjnldsv@protonmail.com>

__tests__/dav/dav.spec.ts

@@ -143,6 +143,25 @@ describe('davResultToNode', () => {
 		const node = davResultToNode(remoteResult)
 		expect(node.status).toBe(NodeStatus.FAILED)
 	})
+
+	test('Ignore invalid times', () => {
+		vi.spyOn(auth, 'getCurrentUser').mockReturnValue({ uid: 'user1', displayName: 'User 1', isAdmin: false })
+
+		// Invalid dates
+		const remoteResult = { ...result }
+		remoteResult.lastmod = 'invalid'
+		remoteResult.props!.creationdate = 'invalid'
+		const node = davResultToNode(remoteResult)
+		expect(node.mtime).toBeUndefined()
+		expect(node.crtime).toBeUndefined()
+
+		// Zero dates
+		remoteResult.lastmod = 'Thu, 01 Jan 1970 00:00:00 GMT'
+		remoteResult.props!.creationdate = 'Thu, 01 Jan 1970 00:00:00 GMT'
+		const node2 = davResultToNode(remoteResult)
+		expect(node2.mtime).toBeUndefined()
+		expect(node2.crtime).toBeUndefined()
+	})
 })
 
 describe('DAV requests', () => {

lib/dav/dav.ts

@@ -22,6 +22,7 @@ import { getSharingToken, isPublicShare } from '@nextcloud/sharing/public'
  * Nextcloud DAV result response
  */
 interface ResponseProps extends DAVResultResponseProps {
+	creationdate: string
 	permissions: string
 	mime: string
 	fileid: number
@@ -174,10 +175,14 @@ export const davResultToNode = function(node: FileStat, filesRoot = davRootPath,
 	const owner = String(props?.['owner-id'] || userId)
 	const id = props.fileid || 0
 
+	const mtime = new Date(Date.parse(node.lastmod))
+	const crtime = new Date(Date.parse(props.creationdate))
+
 	const nodeData: NodeData = {
 		id,
 		source: `${remoteURL}${node.filename}`,
-		mtime: new Date(Date.parse(node.lastmod)),
+		mtime: !isNaN(mtime.getTime()) && mtime.getTime() !== 0 ? mtime : undefined,
+		crtime: !isNaN(crtime.getTime()) && crtime.getTime() !== 0 ? crtime : undefined,
 		mime: node.mime || 'application/octet-stream',
 		// Manually cast to work around for https://github.com/perry-mitchell/webdav-client/pull/380
 		displayname: props.displayname !== undefined ? String(props.displayname) : undefined,