;;; 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 3)

(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)

(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 file-test-existence
    (home-subpath "/")
    (literal "/private")
    (literal "/private/etc")
    (literal "/private/var")
    (literal "/private/var/db")
    (subpath "/private/var/db/assetsubscriptiond")
    (subpath "/private/var/folders/zz")
    (literal "/private/var/tmp")
    (subpath (param "HOME"))
    (subpath "/System/Library/AssetsV2")
    (literal "/usr")
    (literal "/usr/libexec")
    (literal "/usr/libexec/assetsubscriptiond")
    (literal "/usr/libexec/siriknowledged")
)

(allow file-test-existence
    (literal "/etc/localtime")
    (literal "/etc/master.passwd")
    (literal "/etc/passwd")
    (literal "/Library")
    (literal "/Library/Application Support")
    (literal "/Library/Application Support/CrashReporter")
    (literal "/Library/Preferences/com.apple.networkd.plist")
    (subpath "/private")
    (literal "/Users")
    (literal "/usr/libexec/Base.lproj") ;; so as to not pollute the logs with silly deny entries
    (literal "/usr/libexec/English.lproj") ;; so as to not pollute the logs with silly deny entries
    (subpath "/var/folders/zz")
    (literal "/var/root")
    (literal "/var/root/Library")
    (literal "/var/root/Library/Caches")
    (subpath "/var/root/Library/Trial")
    (subpath "/var/root/Library/Caches/UnifiedAssetFramework")
)

(allow file-read-data
    (literal "/Library/Preferences/com.apple.networkd.plist")
    (literal "/private/var/db/eligibilityd/eligibility.plist")
    (subpath "/private/var/db/assetsubscriptiond")
    (subpath "/System/Library/AssetsV2")
    (literal "/usr/libexec")
    (subpath "/usr/libexec/assetsubscriptiond")
)

;; allow access to our NSTemporary() directory:
(with-filter (uid 0)
    (allow file-read* file-write* file-test-existence
        (regex #"^/private/var/folders/zz/[^/]+/T/com.apple.assetsubscriptiond/TemporaryItems/.*")
    )
)

;; Allow file creation access to ~root/Library/Caches/ so we can make ~root/Library/Caches/UnifiedAssetFramework
(allow file-read* file-write-create file-test-existence
    ;; note: no trailing slash, we only want this to affect the Caches dir
    (literal "/private/var/root/Library/Caches")
)

;; Allow full access to our space
(allow file-read* file-write* file-test-existence
    (subpath "/private/var/db/assetsubscriptiond")
    (subpath "/private/var/root/Library/Caches/UnifiedAssetFramework")
)

(allow user-preference-read user-preference-write
    (preference-domain "com.apple.assetsubscriptiond")
    (preference-domain "com.apple.UnifiedAssetFramework")
    (preference-domain "kCFPreferencesAnyApplication")  ;; for GMS availability information
)

(allow file-read* file-write*
    (home-subpath "/Library/UnifiedAssetFramework")  ;; so we can read the user's existing DB
    (subpath "/private/var/tmp/com.apple.assetsubscriptiond")  ;; for Malloc Stack Logging
)

(allow managed-preference-read user-preference-read
    (preference-domain "com.apple.gms.availability")
    (preference-domain "com.apple.networkd")
    (preference-domain "kCFPreferencesAnyApplication")
)

(allow file-read* file-test-existence
    (literal "/Library/Application Support/CrashReporter/DiagnosticMessagesHistory.plist")
    (subpath "/Library/Trial")
    (subpath "/private/var/MobileAsset")
    (subpath "/private/var/db/timezone")
    (subpath "/var/db/timezone")
)

(allow file-read* file-test-existence
    (literal "/AppleInternal")
    (subpath "/AppleInternal/Library/UnifiedAssetFramework")
)

(allow iokit-open-service
    (iokit-user-client-class "AppleKeyStore")
)
;; needed for biome framework to check device lock state:
(allow iokit-open-user-client
    (iokit-user-client-class "AppleKeyStoreUserClient")
)

(allow mach-lookup
    (global-name "com.apple.biome.access.system")
    (global-name "com.apple.biome.compute.publisher.service")
    (global-name "com.apple.coreservices.quarantine-resolver")
    (global-name "com.apple.feedbacklogger")
    (global-name "com.apple.generativeexperiences.availabilityService")
    (global-name "com.apple.lsd.mapdb")
    (global-name "com.apple.lsd.modifydb")
    (global-name "com.apple.mobileasset.autoasset")
    (global-name "com.apple.mobileassetd.v2")
    (global-name "com.apple.system.opendirectoryd.api")
    (global-name "com.apple.symptom_diagnostics")
    (global-name "com.apple.SystemConfiguration.configd")
    (global-name "com.apple.triald.namespace-management")
)

(allow necp-client-open)

;; allow all mach and unix syscalls
(allow syscall-mach)
(allow syscall-unix)

(allow system-fcntl
    (fcntl-command
        F_DUPFD_CLOEXEC
        F_GETCONFINED
        F_GETPROTECTIONCLASS
        F_NOCACHE
        F_OFD_GETLK
        F_OFD_SETLK
        F_SETCONFINED
    )
)

(with-filter (mac-policy-name "Sandbox")
    (allow system-mac-syscall
        (mac-syscall-number 4)  ;; SYSCALL_CONTAINER
        (mac-syscall-number 6)
    )
)

(allow system-necp-client-action)