; Copyright (C) 2013-2016 Apple Inc. All rights reserved.
;
; Redistribution and use in source and binary forms, with or without
; modification, are permitted provided that the following conditions
; are met:
; 1. Redistributions of source code must retain the above copyright
; notice, this list of conditions and the following disclaimer.
; 2. Redistributions in binary form must reproduce the above copyright
; notice, this list of conditions and the following disclaimer in the
; documentation and/or other materials provided with the distribution.
;
; THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
; AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
; THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
; PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
; BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
; CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
; SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
; INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
; CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
; ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
; THE POSSIBILITY OF SUCH DAMAGE.

(version 1)
(deny default (with partial-symbolication))
(allow system-audit file-read-metadata)

(import "system.sb")

;; Utility functions for home directory relative path filters
(define (home-regex home-relative-regex)
  (regex (string-append "^" (regex-quote (param "HOME_DIR")) home-relative-regex)))

(define (home-subpath home-relative-subpath)
    (subpath (string-append (param "HOME_DIR") home-relative-subpath)))

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

;; Read-only preferences and data
(allow file-read*
    ;; Basic system paths
    (subpath "/Library/Frameworks")
    (subpath "/Library/Managed Preferences")

    (literal "/Library/Application Support/CrashReporter/SubmitDiagInfo.domains")

    ;; System and user preferences
    (literal "/Library/Preferences/.GlobalPreferences.plist")
    (regex #"^/Library/Managed Preferences/[^/]+/com\.apple\.networkConnect\.plist$")
    (home-literal "/Library/Preferences/.GlobalPreferences.plist")
    (home-regex #"/Library/Preferences/ByHost/\.GlobalPreferences\.")
    (home-regex #"/Library/Preferences/ByHost/com\.apple\.networkConnect\.")
    (home-literal "/Library/Preferences/com.apple.DownloadAssessment.plist")
    (home-literal "/Library/Preferences/com.apple.WebFoundation.plist")

    ;; On-disk WebKit2 framework location, to account for debug installations
    ;; outside of /System/Library/Frameworks
    (subpath (param "WEBKIT2_FRAMEWORK_DIR")))
(allow system-fsctl (fsctl-command (_IO "h" 47)))

;; Sandbox extensions
(define (apply-read-and-issue-extension op path-filter)
    (op file-read* path-filter)
    (op file-issue-extension (require-all (extension-class "com.apple.app-sandbox.read") path-filter)))
(define (apply-write-and-issue-extension op path-filter)
    (op file-write* path-filter)
    (op file-issue-extension (require-all (extension-class "com.apple.app-sandbox.read-write") path-filter)))
(define (read-only-and-issue-extensions path-filter)
    (apply-read-and-issue-extension allow path-filter))
(define (read-write-and-issue-extensions path-filter)
    (apply-read-and-issue-extension allow path-filter)
    (apply-write-and-issue-extension allow path-filter))
(read-only-and-issue-extensions (extension "com.apple.app-sandbox.read"))
(read-write-and-issue-extensions (extension "com.apple.app-sandbox.read-write"))

(allow file-read* file-write* (subpath (param "DARWIN_USER_CACHE_DIR")))

(allow file-read* file-write* (subpath (param "DARWIN_USER_TEMP_DIR")))

;; IOKit user clients
(allow iokit-open
    (iokit-user-client-class "RootDomainUserClient"))

;; cookied.
;; FIXME: Update for <rdar://problem/13642852>.
(allow ipc-posix-shm-read-data
    (ipc-posix-name "FNetwork.defaultStorageSession")
    (ipc-posix-name-regex #"\.PrivateBrowsing-")
    (ipc-posix-name-regex #"^WebKit Test-"))

;; Various services required by CFNetwork and other frameworks
(allow mach-lookup
    (global-name "com.apple.FileCoordination")
    (global-name "com.apple.PowerManagement.control")
    (global-name "com.apple.SystemConfiguration.configd")
    (global-name "com.apple.cookied")
    (global-name "com.apple.cfnetwork.AuthBrokerAgent")



)

;; Security framework
(allow mach-lookup
       (global-name "com.apple.ctkd.token-client")
       (global-name "com.apple.ocspd")
       (global-name "com.apple.securityd.xpc")
       (global-name "com.apple.CoreAuthentication.agent.libxpc")
       (global-name "com.apple.SecurityServer"))
(allow file-read* file-write* (home-subpath "/Library/Keychains")) ;; FIXME: This should be removed when <rdar://problem/10479685> is fixed.
(allow file-read* file-write* (subpath "/private/var/db/mds/system")) ;; FIXME: This should be removed when <rdar://problem/9538414> is fixed.
(allow file-read*
       (subpath "/Library/Keychains")
       (subpath "/private/var/db/mds")
       (literal "/private/var/db/DetachedSignatures")
       (literal "/Library/Preferences/com.apple.crypto.plist")
       (literal "/Library/Preferences/com.apple.security.plist")
       (literal "/Library/Preferences/com.apple.security.common.plist")
       (literal "/Library/Preferences/com.apple.security.revocation.plist")
       (home-literal "/Library/Application Support/SyncServices/Local/ClientsWithChanges/com.apple.Keychain")
       (home-literal "/Library/Preferences/com.apple.security.plist")
       (home-literal "/Library/Preferences/com.apple.security.revocation.plist"))
(allow ipc-posix-shm-read* ipc-posix-shm-write-data
       (ipc-posix-name "com.apple.AppleDatabaseChanged"))

(system-network)
(allow network-outbound
    ;; Local mDNSResponder for DNS, arbitrary outbound TCP
    (literal "/private/var/run/mDNSResponder")
    (remote tcp))

;; FIXME should be removed when <rdar://problem/9347205> + related radar in Safari is fixed
(allow mach-lookup
    (global-name "org.h5l.kcm")
    (global-name "com.apple.GSSCred")
    (global-name "com.apple.system.logger")
    (global-name "com.apple.system.notification_center"))
(allow network-outbound
    (remote udp))
(allow file-read*
    (home-subpath "/Library/Preferences/com.apple.Kerberos.plist")
    (home-subpath "/Library/Preferences/com.apple.GSS.plist")
    (home-subpath "/Library/Preferences/edu.mit.Kerberos")
    (literal "/Library/Preferences/com.apple.Kerberos.plist")
    (literal "/Library/Preferences/com.apple.GSS.plist")
    (literal "/Library/Preferences/edu.mit.Kerberos")
    (literal "/private/etc/krb5.conf")
    (literal "/private/etc/services")
    (literal "/private/etc/host")
    (subpath "/Library/KerberosPlugins/GSSAPI")
    (subpath "/Library/KerberosPlugins/KerberosFrameworkPlugins"))

(if (defined? 'vnode-type)
    (deny file-write-create (vnode-type SYMLINK)))

;; FIXME: Should be removed once <rdar://problem/16329087> is fixed.
(deny file-write-xattr (xattr "com.apple.quarantine") (with no-log))

;; Reserve a namespace for additional protected extended attributes.
(deny file-read-xattr file-write-xattr (xattr-regex #"^com\.apple\.security\.private\."))

(deny file-read* file-write* (with no-log)
    ;; FIXME: Should be removed after <rdar://problem/10463881> is fixed.
    (home-literal "/Library/Preferences/com.apple.LaunchServices.QuarantineEventsV2")
    (home-literal "/Library/Preferences/com.apple.LaunchServices.QuarantineEventsV2-journal"))
