;;; Copyright (c) 2025 Apple Inc.  All Rights reserved.
;;;
;;; WARNING: The sandbox rules in this file currently constitute
;;; Apple System Private Interface and are subject to change at any time and
;;; without notice.
;;;
(version 1)

(deny default)
(deny file-map-executable process-info* nvram*)
(deny dynamic-code-generation)
(deny mach-priv-host-port)

(import "system.sb")
(import "com.apple.corefoundation.sb")
(corefoundation)

;;; Homedir-relative path filters
(define (home-regex home-relative-regex)
    (regex (string-append "^" (regex-quote (param "HOME")) home-relative-regex)))

(define (home-subpath home-relative-subpath)
    (subpath (string-append (param "HOME") home-relative-subpath)))

(define (home-prefix home-relative-prefix)
    (prefix (string-append (param "HOME") home-relative-prefix)))

(define (home-literal home-relative-literal)
    (literal (string-append (param "HOME") home-relative-literal)))

(allow process-info* (target self))

;; For resolving symlinks, realpath(3), and equivalents.
(allow file-read-metadata)

;; For validating the entitlements of clients.
(allow process-info-codesignature)

;; Read/write cache access
(let ((cache-path-filter (home-subpath "/Library/Caches/com.apple.xip")))
  (allow file-read* file-write* cache-path-filter)
  (allow file-issue-extension
    (require-all
      (extension-class "com.apple.app-sandbox.read" "com.apple.app-sandbox.read-write")
      cache-path-filter)))

;; Your preference domain
(allow user-preference-read user-preference-write
    (preference-domain "com.apple.xip")
    (preference-domain "com.apple.PackageKit"))

; Allow read/write access anywhere since this is a command-line tool.
(allow file-read* file-write*)

; Allow file access to paths vended via an application group extension
; Yes this is redundant since we allow all read/writes anyway.
(allow file-read* file-write*
    (extension "com.apple.sandbox.application-group"))

; Allow read-only access to any NVRAM variables
(allow nvram-get)

; Shared memory access
(allow ipc-posix-shm
    (ipc-posix-name "com.apple.featureflags.shm")
    (ipc-posix-name "com.apple.AppleDatabaseChanged"))

; Allow daemon access needed to extract/validate a xip
(allow mach-lookup
    (global-name "com.apple.securityd.xpc")
    (global-name "com.apple.SecurityServer")
    (global-name "com.apple.lsd.mapdb")
    (global-name "com.apple.coreservices.quarantine-resolver")
    (global-name "com.apple.containermanagerd")
    (global-name "com.apple.security.syspolicy")
    (global-name "com.apple.security.syspolicy.exec"))