;;; 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)

;; Uncomment the following rules to report violations when testing a change and
;;   set 'sysctl security.mac.sandbox.debug_mode=544' to see verbose violation reporting.
;;
;; (allow (with report) default)
;; (allow (with report) file-map-executable process-info* nvram*)
;; (allow (with report) dynamic-code-generation)

;; (deny mach-priv-host-port)

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

(allow process-info* (target self))

(allow process-info-pidinfo)

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

(allow file*
    (subpath "/private/var/containers/Bundle")
    (subpath "/private/var/containers/Temp/Bundle"))

;; MIS's db is protected by datavault and requires "com.apple.private.security.storage.MobileIdentityService" entitlement
(allow file-read-data
    (subpath "/private/var/db/MobileIdentityService"))
    
;; Needed by Security framework as part of call to MISValidateSignatureAndCopyInfoWithProgress()
(allow file-read*
    (subpath "/private/var/db/mds"))
    
(allow file-read* file-write*
    (subpath "/private/var/db/appinstalld")
    (mount-relative-subpath "/.AppInstallationStaging"))
    
(allow file-read*
    (subpath "/private/var/db/installcoordinationd"))

(allow user-preference-read user-preference-write
    (preference-domain "com.apple.mobile.installation"))

;; Allow cfprefsd to read the preferences plist in appinstalld's home
(allow file-issue-extension
    (require-all
        (extension-class "com.apple.cfprefsd.read")))

(allow mach-lookup
    (global-name "com.apple.SecurityServer")
    (global-name "com.apple.misagent")
    (global-name "com.apple.online-auth-agent.xpc")
    (global-name "com.apple.fpsd")
    (global-name "com.apple.containermanagerd")
    (global-name "com.apple.containermanagerd.system")
    (global-name "com.apple.security.syspolicy.exec"))

;; NSFileManager uses the following for creating temporary items
(allow file-read* file-write*
    (regex #"^/private/var/folders/[^/]+/[^/]+/T")
    (mount-relative-literal "/.TemporaryItems")
    (mount-relative-regex #"^/\.TemporaryItems/folders.[0-9]+(/|$)"))

;; Read/write access to a temporary directory and a cache directory.
(allow file-read* file-write*
    (subpath (param "TMPDIR"))
    (subpath (param "DARWIN_CACHE_DIR")))

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

;; Required for use of CFPreferences
(allow user-preference-read user-preference-write
       (preference-domain "kCFPreferencesAnyApplication"))
(allow file-read-metadata
    ;; __CFXPreferencesCreatePreferencesDirectoryURLForTriplet stats the user's home directory.
    (home-literal "")
    ;; CFPreferencesCopyAppValue stats Preferences' parent directory.
    (home-literal "/Library/Preferences"))

;; Called by MIS signature validation
(allow ipc-posix-shm-write* ipc-posix-shm-read*
    (ipc-posix-name "com.apple.AppleDatabaseChanged"))
    
;; Allow use of NSDistributedNotificationCenter
(allow distributed-notification-post)

(allow sysctl-read sysctl-write
        (sysctl-name "kern.grade_cputype"))

(allow system-fsctl
        (fsctl-command APFSIOC_GET_INTERNAL_FLAGS))