;;; 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)

(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)

;; Preference domain
(allow user-preference-read user-preference-write
    (preference-domain "com.apple.DeviceCheck")
    (preference-domain "kCFPreferencesAnyApplication")
    (preference-domain "com.apple.security")
)

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

;; Read/write cache access
(let ((cache-path-filter (home-subpath "/Library/Caches/com.apple.DeviceCheckInternal")))
    (allow file-read* file-write* cache-path-filter)
)
  
;; Read/write HTTP storages
(let ((httpstorage-path-filter (home-subpath "/Library/HTTPStorages/com.apple.DeviceCheckInternal")))
    (allow file-read* file-write* httpstorage-path-filter)
)

;; Read-only access.
(allow file-read*
    (file-attribute apfs-preboot-volume)
    (subpath "/private/var/db/mds/messages/501/se_SecurityMessages")
    (subpath "/Applications/")
    (subpath "/Library/")
)

;; Mach Lookup
(allow mach-lookup
    (global-name "com.apple.CoreAuthentication.agent")
    (global-name "com.apple.CoreAuthentication.agent.libxpc")
    (global-name "com.apple.ctkd.token-client")
    (global-name "com.apple.lsd.mapdb")
    (global-name "com.apple.mobileactivationd")
    (global-name "com.apple.mobileassetd.v2")
    (global-name "com.apple.remoted")
    (global-name "com.apple.securityd.xpc")
    (global-name "com.apple.duetactivityscheduler")
    (global-name "com.apple.dnssd.service")
    (global-name "com.apple.securityd.systemkeychain")
    (global-name "com.apple.nesessionmanager.content-filter")
    (global-name "com.apple.metadata.mds")
    (global-name "com.apple.securityd.systemkeychain")
    (global-name "com.apple.security.syspolicy")
)
    
(allow iokit-open
    (iokit-user-client-class "AppleKeyStoreUserClient")
    (iokit-user-client-class "BootPolicyUserClient")
)

;; Networking
(system-network)
(allow system-socket)
(allow network-outbound)

(allow process-info-pidinfo)