com.apple.WebKit.NetworkProcess.sb.in [plain text]
; Copyright (C) 2013-2017 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")
;;; process-info* defaults to allow; deny it and then allow operations we actually need.
(deny process-info*)
(allow process-info-pidinfo)
(allow process-info-setcontrol (target self))
(deny sysctl*)
(allow sysctl-read
(sysctl-name
"hw.availcpu"
"hw.ncpu"
"hw.model"
"kern.memorystatus_level"
"vm.footprint_suspend"))
(deny iokit-get-properties)
#if __MAC_OS_X_VERSION_MIN_REQUIRED >= 101300
(deny mach-lookup (xpc-service-name-prefix ""))
#endif
;; 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)))
#if __MAC_OS_X_VERSION_MIN_REQUIRED >= 101300
;; CFNetwork
(allow file-read-data (path "/private/var/db/nsurlstoraged/dafsaData.bin"))
#endif
;; 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 user-preference-read
(preference-domain
"kCFPreferencesAnyApplication"
"com.apple.DownloadAssessment"
"com.apple.WebFoundation"
"com.apple.networkConnect"))
(allow file-read*
;; Basic system paths
(subpath "/Library/Frameworks")
(subpath "/Library/Managed Preferences")
(literal "/Library/Application Support/CrashReporter/SubmitDiagInfo.domains")
;; System and user preferences
(regex #"^/Library/Managed Preferences/[^/]+/com\.apple\.networkConnect\.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")
#if __MAC_OS_X_VERSION_MIN_REQUIRED >= 101300
(global-name "com.apple.analyticsd")
#endif
(global-name "com.apple.cookied")
(global-name "com.apple.cfnetwork.AuthBrokerAgent")
(global-name "com.apple.cfnetwork.cfnetworkagent")
(global-name "com.apple.lsd.mapdb")
(global-name "com.apple.nesessionmanager.flow-divert-token")
)
;; 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"))
;; 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*
(subpath "/Library/Keychains")
(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) "(/|$)")))
(allow file-read* file-write* (subpath "/private/var/db/mds/system")) ;; FIXME: This should be removed when <rdar://problem/9538414> is fixed.
(allow user-preference-read
(preference-domain
"com.apple.crypto"
"com.apple.security"
"com.apple.security.common"
"com.apple.security.revocation"))
(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"))
(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 user-preference-read
(preference-domain
"com.apple.GSS"
"com.apple.Kerberos"
"edu.mit.Kerberos"))
(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"))
(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))))
;; FIXME should be removed when <rdar://problem/30498072> is fixed.
(allow network*
(local udp)
(remote udp)
(local tcp)
(remote tcp))