com.apple.WebProcess.sb.in [plain text]
; Copyright (C) 2010-2016 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)))
(define (allow-read-directory-and-issue-read-extensions path)
(if path
(begin
(allow file-read* (subpath path))
(allow file-issue-extension (require-all (extension-class "com.apple.app-sandbox.read") (subpath path))))))
;; Remove when <rdar://problem/29646094> is fixed.
(define (HEX-pattern-match-generator pattern-descriptor)
(letrec ((pattern-string ""))
(for-each (lambda (repeat-count)
(if (zero? repeat-count)
(set! pattern-string (string-append pattern-string "-"))
(let appender ((count repeat-count))
(if (> count 0)
(begin
(set! pattern-string (string-append pattern-string "[0-9A-F]"))
(appender (- count 1)))))))
pattern-descriptor)
pattern-string))
;; return a regex pattern matching string for 8-4-4-4-12 UUIDs:
(define (uuid-HEX-pattern-match-string)
(HEX-pattern-match-generator '(8 0 4 0 4 0 4 0 12)))
;; global to hold the computed UUID matching pattern.
(define *uuid-pattern* "")
(define (uuid-regex-string)
(if (zero? (string-length *uuid-pattern*))
(set! *uuid-pattern* (uuid-HEX-pattern-match-string)))
*uuid-pattern*)
;; Read-only preferences and data
(allow file-read*
;; Basic system paths
(subpath "/Library/Dictionaries")
(subpath "/Library/Fonts")
(subpath "/Library/Frameworks")
(subpath "/Library/Managed Preferences")
(subpath "/Library/Speech/Synthesizers")
(regex #"^/private/etc/(hosts|group|passwd)$")
(literal "/Library/Application Support/CrashReporter/SubmitDiagInfo.domains")
;; System and user preferences
(home-literal "/.CFUserTextEncoding")
;; FIXME: This should be removed when <rdar://problem/8957845> is fixed.
(home-subpath "/Library/Fonts")
;; FIXME: These should be removed when <rdar://problem/9217757> is fixed.
(home-subpath "/Library/Audio/Plug-Ins/Components")
(home-subpath "/Library/Preferences/QuickTime Preferences")
(home-literal "/Library/Caches/com.apple.coreaudio.components.plist")
(subpath "/Library/Audio/Plug-Ins/Components")
(subpath "/Library/Audio/Plug-Ins/HAL")
(subpath "/Library/Video/Plug-Ins")
(subpath "/Library/QuickTime")
(home-subpath "/Library/Dictionaries"))
;; Preferences support
(allow user-preference-read
(preference-domain
"kCFPreferencesAnyApplication"
"com.apple.ATS"
"com.apple.CoreGraphics"
"com.apple.DownloadAssessment"
"com.apple.HIToolbox"
"com.apple.LaunchServices"
"com.apple.MultitouchSupport" ;; FIXME: Remove when <rdar://problem/13011633> is fixed.
"com.apple.QTKit"
"com.apple.ServicesMenu.Services" ;; Needed for NSAttributedString <rdar://problem/10844321>
"com.apple.WebFoundation"
"com.apple.avfoundation"
"com.apple.coremedia"
"com.apple.crypto"
"com.apple.driver.AppleBluetoothMultitouch.mouse"
"com.apple.driver.AppleBluetoothMultitouch.trackpad"
"com.apple.driver.AppleHIDMouse"
"com.apple.lookup.shared"
"com.apple.mediaaccessibility"
"com.apple.networkConnect"
"com.apple.security"
"com.apple.security.common"
"com.apple.security.revocation"
"com.apple.speech.voice.prefs"
"com.apple.systemsound"
"com.apple.universalaccess"
"edu.mit.Kerberos"
"pbs" ;; Needed for NSAttributedString <rdar://problem/10844321>
))
;; On-disk WebKit2 framework location, to account for debug installations outside of /System/Library/Frameworks,
;; and to allow issuing extensions.
(allow-read-directory-and-issue-read-extensions (param "WEBKIT2_FRAMEWORK_DIR"))
;; Allow issuing extensions to system libraries that the Network process can already read.
;; This is to avoid warnings attempting to create extensions for these resources.
(allow-read-directory-and-issue-read-extensions "/System/Library/PrivateFrameworks/WebInspectorUI.framework")
;; 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 mach-lookup (extension "com.apple.app-sandbox.mach")) ;; FIXME: Should be removed when <rdar://problem/13066206> is fixed.
;; Allow the OpenGL Profiler to attach.
(if (defined? 'mach-register)
(allow mach-register (global-name-regex #"^_oglprof_attach_<[0-9]+>$")))
;; MediaAccessibility
(allow user-preference-read user-preference-write
(preference-domain "com.apple.mediaaccessibility.public"))
(if (positive? (string-length (param "DARWIN_USER_CACHE_DIR")))
(allow file* (subpath (param "DARWIN_USER_CACHE_DIR"))))
(if (positive? (string-length (param "DARWIN_USER_TEMP_DIR")))
(allow file* (subpath (param "DARWIN_USER_TEMP_DIR"))))
;; IOKit user clients
(allow iokit-open
(iokit-user-client-class "AppleUpstreamUserClient")
(iokit-user-client-class "IOHIDParamUserClient")
(iokit-user-client-class "RootDomainUserClient")
(iokit-user-client-class "IOAudioControlUserClient")
(iokit-user-client-class "IOAudioEngineUserClient"))
;; 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-"))
;; ColorSync
(allow ipc-posix-shm*
(ipc-posix-name "com.apple.ColorSync.Gen.lock")
(ipc-posix-name "com.apple.ColorSync.Disp.lock")
(ipc-posix-name "com.apple.ColorSync.Gray2.2")
(ipc-posix-name "com.apple.ColorSync.sRGB")
(ipc-posix-name "com.apple.ColorSync.GenGray")
(ipc-posix-name "com.apple.ColorSync.GenRGB"))
;; Audio
(allow ipc-posix-shm-read* ipc-posix-shm-write-data
(ipc-posix-name-regex #"^AudioIO"))
;; Remote Web Inspector
(allow mach-lookup
(global-name "com.apple.webinspector"))
;; Various services required by AppKit and other frameworks
(allow mach-lookup
(global-name "com.apple.DiskArbitration.diskarbitrationd")
(global-name "com.apple.FileCoordination")
(global-name "com.apple.FontObjectsServer")
#if __MAC_OS_X_VERSION_MIN_REQUIRED < 101200
(global-name "com.apple.FontServer")
#endif
(global-name "com.apple.PowerManagement.control")
(global-name "com.apple.SystemConfiguration.configd")
(global-name "com.apple.SystemConfiguration.PPPController")
(global-name "com.apple.audio.SystemSoundServer-OSX")
(global-name "com.apple.audio.VDCAssistant")
(global-name "com.apple.audio.audiohald")
(global-name "com.apple.audio.coreaudiod")
(global-name "com.apple.awdd")
(global-name "com.apple.cfnetwork.AuthBrokerAgent")
(global-name "com.apple.cookied")
(global-name "com.apple.coreservices.launchservicesd")
(global-name "com.apple.dock.server")
(global-name "com.apple.fonts")
(global-name "com.apple.iconservices")
(global-name "com.apple.iconservices.store")
#if __MAC_OS_X_VERSION_MIN_REQUIRED >= 101200
(global-name "com.apple.mediaremoted.xpc")
#endif
#if __MAC_OS_X_VERSION_MIN_REQUIRED >= 101100
(global-name "com.apple.nesessionmanager.flow-divert-token")
#endif
(global-name "com.apple.speech.speechsynthesisd")
(global-name "com.apple.speech.synthesis.console")
(global-name "com.apple.system.opendirectoryd.api")
(global-name "com.apple.tccd")
(global-name "com.apple.tccd.system")
(global-name "com.apple.window_proxies")
(global-name "com.apple.windowserver.active")
)
;; 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"))
#if __MAC_OS_X_VERSION_MIN_REQUIRED < 101240
;; FIXME: This should be removed when <rdar://problem/10479685> is fixed.
;; Restrict AppSandboxed processes from creating /Library/Keychains, but allow access to the contents of /Library/Keychains:
(allow file-read-data file-read-metadata file-write-data
(subpath "/Library/Keychains"))
;; Do permit creating per-user keychains
(allow file-read* file-write*
(home-subpath "/Library/Keychains"))
;; Except deny access to new-style iOS Keychain folders which are UUIDs.
(deny file-read* file-write*
(regex (string-append "/Library/Keychains/" (uuid-regex-string) "(/|$)"))
(home-regex (string-append "/Library/Keychains/" (uuid-regex-string) "(/|$)")))
#endif
(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 "/private/var/db/mds")
(literal "/private/var/db/DetachedSignatures")
; The following are needed until <rdar://problem/11134688> is resolved.
(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"))
;; CoreFoundation. We don't import com.apple.corefoundation.sb, because it allows unnecessary access to pasteboard.
(allow mach-lookup
(global-name-regex #"^com.apple.distributed_notifications")
(global-name "com.apple.CoreServices.coreservicesd"))
(allow file-read-data
(literal "/dev/autofs_nowait")) ; Used by CF to circumvent automount triggers
(allow ipc-posix-shm
(ipc-posix-name-regex #"^CFPBS:")) ; <rdar://problem/13757475>
(allow system-fsctl (fsctl-command (_IO "h" 47)))
;; Graphics
(system-graphics)
;; Networking
(system-network)
(allow network-outbound
;; Local mDNSResponder for DNS, arbitrary outbound TCP
(literal "/private/var/run/mDNSResponder")
(remote tcp))
(allow mach-lookup
(global-name "com.apple.pbs.fetch_services"))
;; 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 user-preference-read
(preference-domain
"com.apple.Kerberos"
"com.apple.GSS"))
(allow file-read*
(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)))
;; 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"))
;; Deny access needed for unnecessary NSApplication initialization.
;; FIXME: This can be removed once <rdar://problem/13011633> is fixed.
(deny file-read* (with no-log)
(subpath "/Library/InputManagers")
(home-subpath "/Library/InputManagers"))
(deny user-preference-read (with no-log)
(preference-domain "com.apple.speech.recognition.AppleSpeechRecognition.prefs"))
(deny mach-lookup (with no-log)
(global-name "com.apple.coreservices.appleevents")
(global-name "com.apple.pasteboard.1")
(global-name "com.apple.speech.recognitionserver"))
;; Also part of unnecessary NSApplication initialization, but we can't block access to these yet, see <rdar://problem/13869765>.
(allow file-read*
(subpath "/Library/Components")
(subpath "/Library/Keyboard Layouts")
(subpath "/Library/Input Methods")
(home-subpath "/Library/Components")
(home-subpath "/Library/Keyboard Layouts")
(home-subpath "/Library/Input Methods"))
;; AirPlay
(allow mach-lookup
(global-name "com.apple.coremedia.endpoint.xpc")
(global-name "com.apple.coremedia.endpointstream.xpc")
(global-name "com.apple.coremedia.endpointplaybacksession.xpc")
(global-name "com.apple.coremedia.endpointpicker.xpc"))
;; Data Detectors
(allow file-read* (subpath "/private/var/db/datadetectors/sys"))
;; Media capture, utilities
(if (not (defined? 'sbpl-filter?))
(define (sbpl-filter? x)
(and (list? x)
(eq? (car x) 'filter))))
(macro (with-filter form)
(let* ((ps (cdr form))
(extra-filter (car ps))
(rules (cdr ps)))
`(letrec
((collect
(lambda (l filters non-filters)
(if (null? l)
(list filters non-filters)
(let*
((x (car l))
(rest (cdr l)))
(if (sbpl-filter? x)
(collect rest (cons x filters) non-filters)
(collect rest filters (cons x non-filters)))))))
(inject-filter
(lambda args
(let* ((collected (collect args '() '()))
(filters (car collected))
(non-filters (cadr collected)))
(if (null? filters)
(cons ,extra-filter non-filters)
(cons (require-all (apply require-any filters) ,extra-filter) non-filters)))))
(orig-allow allow)
(orig-deny deny)
(wrapper
(lambda (action)
(lambda args (apply action (apply inject-filter args))))))
(set! allow (wrapper orig-allow))
(set! deny (wrapper orig-deny))
,@rules
(set! deny orig-deny)
(set! allow orig-allow))))
(define (home-library-preferences-regex home-library-preferences-relative-regex)
(regex (string-append "^" (regex-quote (param "HOME_LIBRARY_PREFERENCES_DIR")) home-library-preferences-relative-regex)))
(define (home-library-preferences-literal home-library-preferences-relative-literal)
(literal (string-append (param "HOME_LIBRARY_PREFERENCES_DIR") home-library-preferences-relative-literal)))
(define (shared-preferences-read . domains)
(for-each (lambda (domain)
(begin
(if (defined? `user-preference-read)
(allow user-preference-read (preference-domain domain)))
; (Temporary) backward compatibility with non-CFPreferences readers.
(allow file-read*
(literal (string-append "/Library/Preferences/" domain ".plist"))
(home-library-preferences-literal (string-append "/" domain ".plist"))
(home-library-preferences-regex (string-append #"/ByHost/" (regex-quote domain) #"\..*\.plist$")))))
domains))
;; Media capture, microphone access
(with-filter (extension "com.apple.webkit.microphone")
(allow device-microphone))
;; Media capture, camera access
(with-filter (extension "com.apple.webkit.camera")
(shared-preferences-read "com.apple.coremedia")
(allow mach-lookup (extension "com.apple.app-sandbox.mach"))
(allow mach-lookup
(global-name "com.apple.cmio.AppleCameraAssistant")
;; Apple DAL assistants
(global-name "com.apple.cmio.VDCAssistant")
(global-name "com.apple.cmio.AVCAssistant")
(global-name "com.apple.cmio.IIDCVideoAssistant")
;; QuickTimeIIDCDigitizer assistant
(global-name "com.apple.IIDCAssistant"))
(allow iokit-open
;; QuickTimeUSBVDCDigitizer
(iokit-user-client-class "IOUSBDeviceUserClientV2")
(iokit-user-client-class "IOUSBInterfaceUserClientV2"))
(allow device-camera))