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fix(gui): expand tildes for subdir check (fixes #9400) (#9788)

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### Purpose

This closes #9400 by always expanding tildes when parent/subdir checks
are done.

### Testing

I tested this by creating folders with paths to parent or subdirectories
of the default folder that include a tilde in their path as shown in the
attached screenshots.
With this change, overlap will be detected regardless of wether or not
tildes are used in other folder paths.

### Screenshots

Default Folder:

![2024-10-26-At-08h40m33s](https://github.com/user-attachments/assets/07df090c-4481-41ec-b741-d2785fc848d5)
Newly created folder (parent directory in this case)

![2024-10-26-At-08h40m13s](https://github.com/user-attachments/assets/636fa1fd-41dc-44d9-ac90-0a4937c9921c)

---------

Signed-off-by: tobifroe <froeltob@pm.me>
This commit is contained in:
Tobias Frölich 2024-11-12 09:24:00 +01:00 committed by GitHub
parent 36ef17df8f
commit 1a529e9d5d
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5
gui/default/syncthing/core/pathIsSubDirDirective.js
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@ -6,7 +6,12 @@ angular.module('syncthing.core')
ctrl.$validators.folderPathErrors = function (viewValue) {
// This function checks whether ydir is a subdirectory of xdir,
// e.g. it would return true if xdir = "/home/a", ydir = "/home/a/b".
// Tildes in both xdir and ydir are expanded for comparison
// so that e.g. xdir = "home/a/", ydir = "~/b" will return true.
function isSubDir(xdir, ydir) {
var tildeExpansionRegex = new RegExp(`^~${scope.system.pathSeparator}|^~/`);
xdir = xdir.replace(tildeExpansionRegex, `${scope.system.tilde}${scope.system.pathSeparator}`);
ydir = ydir.replace(tildeExpansionRegex, `${scope.system.tilde}${scope.system.pathSeparator}`);
var xdirArr = xdir.split(scope.system.pathSeparator);
var ydirArr = ydir.split(scope.system.pathSeparator);
if (xdirArr.slice(-1).pop() === "") {