From 04052a959443c2df04a11ae1ed523eefd7e0a0ad Mon Sep 17 00:00:00 2001
From: Robin Appelman <robin@icewind.nl>
Date: Tue, 8 Mar 2022 17:11:41 +0100
Subject: allow getting cached mounts by path from the mount cache

Signed-off-by: Robin Appelman <robin@icewind.nl>
---
 lib/private/Files/Config/UserMountCache.php | 33 +++++++++++++++++++++++++++++
 lib/public/Files/Config/IUserMountCache.php | 23 ++++++++++++++++++++
 2 files changed, 56 insertions(+)

(limited to 'lib')

diff --git a/lib/private/Files/Config/UserMountCache.php b/lib/private/Files/Config/UserMountCache.php
index dc2640361e7..e5c2baa2735 100644
--- a/lib/private/Files/Config/UserMountCache.php
+++ b/lib/private/Files/Config/UserMountCache.php
@@ -446,4 +446,37 @@ class UserMountCache implements IUserMountCache {
 		$this->cacheInfoCache = new CappedMemoryCache();
 		$this->mountsForUsers = new CappedMemoryCache();
 	}
+
+	public function getMountForPath(IUser $user, string $path): ICachedMountInfo {
+		$mounts = $this->getMountsForUser($user);
+		$mountPoints = array_map(function (ICachedMountInfo $mount) {
+			return $mount->getMountPoint();
+		}, $mounts);
+		$mounts = array_combine($mountPoints, $mounts);
+
+		$current = $path;
+		while (true) {
+			$mountPoint = $current . '/';
+			if (isset($mounts[$mountPoint])) {
+				return $mounts[$mountPoint];
+			} elseif ($current === '') {
+				break;
+			}
+
+			$current = dirname($current);
+			if ($current === '.' || $current === '/') {
+				$current = '';
+			}
+		}
+
+		throw new NotFoundException("No cached mount for path " . $path);
+	}
+
+	public function getMountsInForPath(IUser $user, string $path): array {
+		$path = rtrim($path, '/') . '/';
+		$mounts = $this->getMountsForUser($user);
+		return array_filter($mounts, function (ICachedMountInfo $mount) use ($path) {
+			return $mount->getMountPoint() !== $path && strpos($mount->getMountPoint(), $path) === 0;
+		});
+	}
 }
diff --git a/lib/public/Files/Config/IUserMountCache.php b/lib/public/Files/Config/IUserMountCache.php
index 08f95990d3c..e45bea9b5d9 100644
--- a/lib/public/Files/Config/IUserMountCache.php
+++ b/lib/public/Files/Config/IUserMountCache.php
@@ -25,6 +25,7 @@
 namespace OCP\Files\Config;
 
 use OCP\Files\Mount\IMountPoint;
+use OCP\Files\NotFoundException;
 use OCP\IUser;
 
 /**
@@ -125,4 +126,26 @@ interface IUserMountCache {
 	 * @since 20.0.0
 	 */
 	public function clear(): void;
+
+	/**
+	 * Get all cached mounts for a user
+	 *
+	 * @param IUser $user
+	 * @param string $path
+	 * @return ICachedMountInfo
+	 * @throws NotFoundException
+	 * @since 24.0.0
+	 */
+	public function getMountForPath(IUser $user, string $path): ICachedMountInfo;
+
+	/**
+	 * Get all cached mounts for a user inside a path
+	 *
+	 * @param IUser $user
+	 * @param string $path
+	 * @return ICachedMountInfo[]
+	 * @throws NotFoundException
+	 * @since 24.0.0
+	 */
+	public function getMountsInForPath(IUser $user, string $path): array;
 }
-- 
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