;;; Copyright (c) 2020 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)

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

;;; -- DEFINES ---

;;; 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)))

;;; --- RULES ---

(allow job-creation)
(allow iokit-get-properties)

(allow process-info* (target self))
(allow process-info-pidinfo)

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

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

;; Read/Write preference domains
(allow user-preference-read user-preference-write
    (preference-domain "com.apple.mobile_storage_mounter"))

;; Read-Only preference domains
(allow user-preference-read
    (preference-domain "kCFPreferencesAnyApplication"))

;; Read-Only file access
(allow file-read* file-ioctl
    (prefix "/dev/disk"))

;; Distributed Notifications
(allow distributed-notification-post)

;; Read-Only file access
(allow file-read*
    (literal "/usr")
    (literal "/usr/libexec")
    (literal "/usr/libexec/mobile_storage_mounter"))

;; Read/Write file access
(allow file-read* file-write*
    (subpath (param "TMPDIR"))
    (subpath "/private/var/run/mobile_image_mounter")
    (subpath "/private/var/run/com.apple.security.cryptexd/mnt")
    (subpath "/private/var/boot/com.apple.security.cryptexd/mnt"))
    
;; Mount/Unmount access
(let ((mobile-storage-mounts '("/Developer"
                             "/System/Developer"
                             "/private/var/factory_mount"
                             "/private/var/mnt"
                             "/private/var/personalized_automation"
                             "/private/var/personalized_debug"
                             "/private/var/personalized_demo"
                             "/private/var/personalized_factory"
                             "/private/var/personalized_quality"
                             "/System/Volumes/FieldService"
                             "/System/Volumes/FieldServiceDiagnostic"
                             "/System/Volumes/FieldServiceRepair")))
    (allow file-mount file-unmount file-read* file-write*
        (apply require-any (map subpath mobile-storage-mounts))))

(allow iokit-open
    (iokit-user-client-class "AppleImage4UserClient")
    (iokit-user-client-class "AppleMobileApNonceUserClient")
    (iokit-user-client-class "AppleMobileFileIntegrityUserClient"))

;; Mach Lookup
(allow mach-lookup
    (global-name "com.apple.SBUserNotification")
    (global-name "com.apple.security.cryptexd"))

(allow sysctl-read
    (sysctl-name "security.codesigning.config"))