;;; Copyright (c) 2017 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)

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

(allow user-preference-read
       (preference-domain "kCFPreferencesAnyApplication"))

;; Read/write access to a temporary directory.
(allow file-read* file-write*
       (subpath (param "TMPDIR"))
       (subpath (param "DARWIN_CACHE_DIR"))
       (subpath "/private/var/db/fpsd"))

(allow file-read*
    (subpath "/usr/libexec")
    (subpath "/usr/libexec/fairplaydeviceidentityd")
)

;; Allow CFPref read/write from fpsd user preferences
(allow file-issue-extension
  (extension-class "com.apple.cfprefsd.read")
  (extension-class "com.apple.cfprefsd.read-write")
  (subpath "/private/var/db/fpsd/Library/Preferences")
)

;; Read/write cache access
(let ((cache-path-filter (home-subpath "/Library/Caches/com.apple.fairplaydeviceidentityd")))
  (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)))

;; Added Dependencies
(allow mach-lookup
    (global-name "com.apple.mobileactivationd")                 ;; For DeviceIdentity.Framework
    (global-name "com.apple.securityd.systemkeychain")          ;; For DeviceIdentity.Framework
    (global-name "com.apple.CoreAuthentication.daemon")         ;; For DeviceIdentity.Framework
    (global-name "com.apple.CoreAuthentication.daemon.libxpc")  ;; For DeviceIdentity.Framework
    (global-name "com.apple.securityd.xpc")                     ;; For DeviceIdentity.Framework
    (global-name "com.apple.CoreAuthentication.agent")          ;; For CoreAnalytics.Framework
    (global-name "com.apple.CoreAuthentication.agent.libxpc")   ;; For CoreAnalytics.Framework
)

(allow mach-register
    (global-name "com.apple.fairplaydeviceidentityd")
)

(allow iokit-open (iokit-user-client-class "AppleKeyStoreUserClient")) ;; For DeviceIdentity.Framework
(allow iokit-open (iokit-user-client-class "AvpFairPlayUserClient"))
(allow iokit-open (iokit-user-client-class "com_apple_driver_FairPlayIOKitUserClient"))