mirror of
https://github.com/mozilla/gecko-dev.git
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9086ac87fb
Update MacSandboxInfo struct to include file system read flag and remove filesytem read restrictions from the file content process sandbox. MozReview-Commit-ID: B9LPocvb0W3 --HG-- extra : rebase_source : 7c80335c28dbdb7146d2ad0b447959db5e06cf0f
493 lines
19 KiB
Plaintext
493 lines
19 KiB
Plaintext
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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// The Mac sandbox module is a static library (a Library in moz.build terms)
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// that can be linked into any binary (for example plugin-container or XUL).
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// It must not have dependencies on any other Mozilla module. This is why,
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// for example, it has its own OS X version detection code, rather than
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// linking to nsCocoaFeatures.mm in XUL.
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#include "Sandbox.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <CoreFoundation/CoreFoundation.h>
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#include "mozilla/Assertions.h"
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// XXX There are currently problems with the /usr/include/sandbox.h file on
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// some/all of the Macs in Mozilla's build system. For the time being (until
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// this problem is resolved), we refer directly to what we need from it,
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// rather than including it here.
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extern "C" int sandbox_init(const char *profile, uint64_t flags, char **errorbuf);
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extern "C" void sandbox_free_error(char *errorbuf);
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#define MAC_OS_X_VERSION_10_0_HEX 0x00001000
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#define MAC_OS_X_VERSION_10_6_HEX 0x00001060
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#define MAC_OS_X_VERSION_10_7_HEX 0x00001070
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#define MAC_OS_X_VERSION_10_8_HEX 0x00001080
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#define MAC_OS_X_VERSION_10_9_HEX 0x00001090
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#define MAC_OS_X_VERSION_10_10_HEX 0x000010A0
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// Note about "major", "minor" and "bugfix" in the following code:
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//
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// The code decomposes an OS X version number into these components, and in
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// doing so follows Apple's terminology in Gestalt.h. But this is very
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// misleading, because in other contexts Apple uses the "minor" component of
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// an OS X version number to indicate a "major" release (for example the "9"
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// in OS X 10.9.5), and the "bugfix" component to indicate a "minor" release
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// (for example the "5" in OS X 10.9.5).
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class OSXVersion {
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public:
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static int32_t OSXVersionMinor();
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private:
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static void GetSystemVersion(int32_t& aMajor, int32_t& aMinor, int32_t& aBugFix);
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static int32_t GetVersionNumber();
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static int32_t mOSXVersion;
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};
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int32_t OSXVersion::mOSXVersion = -1;
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int32_t OSXVersion::OSXVersionMinor()
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{
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return (GetVersionNumber() & 0xF0) >> 4;
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}
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void
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OSXVersion::GetSystemVersion(int32_t& aMajor, int32_t& aMinor, int32_t& aBugFix)
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{
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SInt32 major = 0, minor = 0, bugfix = 0;
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CFURLRef url =
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CFURLCreateWithString(kCFAllocatorDefault,
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CFSTR("file:///System/Library/CoreServices/SystemVersion.plist"),
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NULL);
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CFReadStreamRef stream =
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CFReadStreamCreateWithFile(kCFAllocatorDefault, url);
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CFReadStreamOpen(stream);
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CFDictionaryRef sysVersionPlist = (CFDictionaryRef)
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CFPropertyListCreateWithStream(kCFAllocatorDefault,
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stream, 0, kCFPropertyListImmutable,
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NULL, NULL);
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CFReadStreamClose(stream);
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CFRelease(stream);
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CFRelease(url);
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CFStringRef versionString = (CFStringRef)
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CFDictionaryGetValue(sysVersionPlist, CFSTR("ProductVersion"));
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CFArrayRef versions =
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CFStringCreateArrayBySeparatingStrings(kCFAllocatorDefault,
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versionString, CFSTR("."));
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CFIndex count = CFArrayGetCount(versions);
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if (count > 0) {
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CFStringRef component = (CFStringRef) CFArrayGetValueAtIndex(versions, 0);
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major = CFStringGetIntValue(component);
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if (count > 1) {
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component = (CFStringRef) CFArrayGetValueAtIndex(versions, 1);
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minor = CFStringGetIntValue(component);
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if (count > 2) {
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component = (CFStringRef) CFArrayGetValueAtIndex(versions, 2);
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bugfix = CFStringGetIntValue(component);
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}
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}
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}
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CFRelease(sysVersionPlist);
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CFRelease(versions);
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// If 'major' isn't what we expect, assume the oldest version of OS X we
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// currently support (OS X 10.6).
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if (major != 10) {
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aMajor = 10; aMinor = 6; aBugFix = 0;
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} else {
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aMajor = major; aMinor = minor; aBugFix = bugfix;
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}
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}
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int32_t
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OSXVersion::GetVersionNumber()
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{
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if (mOSXVersion == -1) {
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int32_t major, minor, bugfix;
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GetSystemVersion(major, minor, bugfix);
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mOSXVersion = MAC_OS_X_VERSION_10_0_HEX + (minor << 4) + bugfix;
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}
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return mOSXVersion;
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}
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namespace mozilla {
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static const char pluginSandboxRules[] =
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"(version 1)\n"
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"(deny default %s)\n"
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"(allow signal (target self))\n"
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"(allow sysctl-read)\n"
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"(allow iokit-open (iokit-user-client-class \"IOHIDParamUserClient\"))\n"
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"(allow mach-lookup\n"
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" (global-name \"com.apple.cfprefsd.agent\")\n"
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" (global-name \"com.apple.cfprefsd.daemon\")\n"
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" (global-name \"com.apple.system.opendirectoryd.libinfo\")\n"
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" (global-name \"com.apple.system.logger\")\n"
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" (global-name \"com.apple.ls.boxd\"))\n"
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"(allow file-read*\n"
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" (regex #\"^/etc$\")\n"
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" (regex #\"^/dev/u?random$\")\n"
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" (literal \"/usr/share/icu/icudt51l.dat\")\n"
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" (regex #\"^/System/Library/Displays/Overrides/*\")\n"
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" (regex #\"^/System/Library/CoreServices/CoreTypes.bundle/*\")\n"
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" (regex #\"^/System/Library/PrivateFrameworks/*\")\n"
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" (regex #\"^/usr/lib/libstdc\\+\\+\\..*dylib$\")\n"
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" (literal \"%s\")\n"
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" (literal \"%s\")\n"
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" (literal \"%s\"))\n";
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static const char widevinePluginSandboxRulesAddend[] =
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"(allow mach-lookup (global-name \"com.apple.windowserver.active\"))\n";
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static const char contentSandboxRules[] =
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"(version 1)\n"
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"\n"
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"(define sandbox-level %d)\n"
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"(define macosMinorVersion %d)\n"
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"(define appPath \"%s\")\n"
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"(define appBinaryPath \"%s\")\n"
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"(define appDir \"%s\")\n"
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"(define appTempDir \"%s\")\n"
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"(define hasProfileDir %d)\n"
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"(define profileDir \"%s\")\n"
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"(define home-path \"%s\")\n"
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"(define hasFilePrivileges %d)\n"
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"\n"
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"; Allow read access to standard system paths.\n"
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"(allow file-read*\n"
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" (require-all (file-mode #o0004)\n"
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" (require-any (subpath \"/Library/Filesystems/NetFSPlugins\")\n"
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" (subpath \"/System\")\n"
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" (subpath \"/private/var/db/dyld\")\n"
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" (subpath \"/usr/lib\")\n"
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" (subpath \"/usr/share\"))))\n"
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"\n"
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"(allow file-read-metadata\n"
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" (literal \"/etc\")\n"
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" (literal \"/tmp\")\n"
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" (literal \"/var\")\n"
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" (literal \"/private/etc/localtime\"))\n"
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"\n"
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"; Allow read access to standard special files.\n"
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"(allow file-read*\n"
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" (literal \"/dev/autofs_nowait\")\n"
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" (literal \"/dev/random\")\n"
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" (literal \"/dev/urandom\"))\n"
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"\n"
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"(allow file-read*\n"
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" file-write-data\n"
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" (literal \"/dev/null\")\n"
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" (literal \"/dev/zero\"))\n"
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"\n"
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"(allow file-read*\n"
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" file-write-data\n"
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" file-ioctl\n"
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" (literal \"/dev/dtracehelper\"))\n"
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"\n"
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"; Used to read hw.ncpu, hw.physicalcpu_max, kern.ostype, and others\n"
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"(allow sysctl-read)\n"
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"\n"
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"(begin\n"
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" (deny default %s)\n"
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" (debug deny)\n"
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"\n"
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" (define resolving-literal literal)\n"
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" (define resolving-subpath subpath)\n"
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" (define resolving-regex regex)\n"
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"\n"
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" (define container-path appPath)\n"
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" (define appdir-path appDir)\n"
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" (define var-folders-re \"^/private/var/folders/[^/][^/]\")\n"
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" (define var-folders2-re (string-append var-folders-re \"/[^/]+/[^/]\"))\n"
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"\n"
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" (define (home-regex home-relative-regex)\n"
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" (resolving-regex (string-append \"^\" (regex-quote home-path) home-relative-regex)))\n"
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" (define (home-subpath home-relative-subpath)\n"
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" (resolving-subpath (string-append home-path home-relative-subpath)))\n"
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" (define (home-literal home-relative-literal)\n"
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" (resolving-literal (string-append home-path home-relative-literal)))\n"
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"\n"
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" (define (profile-subpath profile-relative-subpath)\n"
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" (resolving-subpath (string-append profileDir profile-relative-subpath)))\n"
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"\n"
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" (define (var-folders-regex var-folders-relative-regex)\n"
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" (resolving-regex (string-append var-folders-re var-folders-relative-regex)))\n"
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" (define (var-folders2-regex var-folders2-relative-regex)\n"
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" (resolving-regex (string-append var-folders2-re var-folders2-relative-regex)))\n"
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"\n"
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" (define (allow-shared-preferences-read domain)\n"
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" (begin\n"
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" (if (defined? `user-preference-read)\n"
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" (allow user-preference-read (preference-domain domain)))\n"
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" (allow file-read*\n"
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" (home-literal (string-append \"/Library/Preferences/\" domain \".plist\"))\n"
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" (home-regex (string-append \"/Library/Preferences/ByHost/\" (regex-quote domain) \"\\..*\\.plist$\")))\n"
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" ))\n"
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"\n"
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" (define (allow-shared-list domain)\n"
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" (allow file-read*\n"
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" (home-regex (string-append \"/Library/Preferences/\" (regex-quote domain)))))\n"
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"\n"
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" (allow ipc-posix-shm\n"
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" (ipc-posix-name-regex \"^/tmp/com.apple.csseed:\")\n"
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" (ipc-posix-name-regex \"^CFPBS:\")\n"
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" (ipc-posix-name-regex \"^AudioIO\"))\n"
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"\n"
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" (allow file-read-metadata\n"
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" (literal \"/home\")\n"
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" (literal \"/net\")\n"
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" (regex \"^/private/tmp/KSInstallAction\\.\")\n"
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" (var-folders-regex \"/\")\n"
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" (home-subpath \"/Library\"))\n"
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"\n"
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" (allow signal (target self))\n"
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" (allow job-creation (literal \"/Library/CoreMediaIO/Plug-Ins/DAL\"))\n"
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" (allow iokit-set-properties (iokit-property \"IOAudioControlValue\"))\n"
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"\n"
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" (allow mach-lookup\n"
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" (global-name \"com.apple.coreservices.launchservicesd\")\n"
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" (global-name \"com.apple.coreservices.appleevents\")\n"
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" (global-name \"com.apple.pasteboard.1\")\n"
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" (global-name \"com.apple.window_proxies\")\n"
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" (global-name \"com.apple.windowserver.active\")\n"
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" (global-name \"com.apple.audio.coreaudiod\")\n"
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" (global-name \"com.apple.audio.audiohald\")\n"
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" (global-name \"com.apple.PowerManagement.control\")\n"
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" (global-name \"com.apple.cmio.VDCAssistant\")\n"
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" (global-name \"com.apple.SystemConfiguration.configd\")\n"
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" (global-name \"com.apple.iconservices\")\n"
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" (global-name \"com.apple.cookied\")\n"
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" (global-name \"com.apple.cache_delete\")\n"
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" (global-name \"com.apple.pluginkit.pkd\")\n"
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" (global-name \"com.apple.bird\")\n"
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" (global-name \"com.apple.ocspd\")\n"
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" (global-name \"com.apple.cmio.AppleCameraAssistant\")\n"
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" (global-name \"com.apple.DesktopServicesHelper\"))\n"
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"\n"
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"; bug 1312273\n"
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" (if (= macosMinorVersion 9)\n"
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" (allow mach-lookup (global-name \"com.apple.xpcd\")))\n"
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"\n"
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" (allow iokit-open\n"
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" (iokit-user-client-class \"IOHIDParamUserClient\")\n"
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" (iokit-user-client-class \"IOAudioControlUserClient\")\n"
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" (iokit-user-client-class \"IOAudioEngineUserClient\")\n"
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" (iokit-user-client-class \"IGAccelDevice\")\n"
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" (iokit-user-client-class \"nvDevice\")\n"
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" (iokit-user-client-class \"nvSharedUserClient\")\n"
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" (iokit-user-client-class \"nvFermiGLContext\")\n"
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" (iokit-user-client-class \"IGAccelGLContext\")\n"
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" (iokit-user-client-class \"IGAccelSharedUserClient\")\n"
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" (iokit-user-client-class \"IGAccelVideoContextMain\")\n"
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" (iokit-user-client-class \"IGAccelVideoContextMedia\")\n"
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" (iokit-user-client-class \"IGAccelVideoContextVEBox\")\n"
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" (iokit-user-client-class \"RootDomainUserClient\")\n"
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" (iokit-user-client-class \"IOUSBDeviceUserClientV2\")\n"
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" (iokit-user-client-class \"IOUSBInterfaceUserClientV2\"))\n"
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"\n"
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"; depending on systems, the 1st, 2nd or both rules are necessary\n"
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" (allow-shared-preferences-read \"com.apple.HIToolbox\")\n"
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" (allow file-read-data (literal \"/Library/Preferences/com.apple.HIToolbox.plist\"))\n"
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"\n"
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" (allow-shared-preferences-read \"com.apple.ATS\")\n"
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" (allow file-read-data (literal \"/Library/Preferences/.GlobalPreferences.plist\"))\n"
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"\n"
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" (allow file-read*\n"
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" (subpath \"/Library/Fonts\")\n"
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" (subpath \"/Library/Audio/Plug-Ins\")\n"
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" (subpath \"/Library/CoreMediaIO/Plug-Ins/DAL\")\n"
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" (subpath \"/Library/Spelling\")\n"
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" (literal \"/\")\n"
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" (literal \"/private/tmp\")\n"
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" (literal \"/private/var/tmp\")\n"
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"\n"
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" (home-literal \"/.CFUserTextEncoding\")\n"
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" (home-literal \"/Library/Preferences/com.apple.DownloadAssessment.plist\")\n"
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" (home-subpath \"/Library/Colors\")\n"
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" (home-subpath \"/Library/Fonts\")\n"
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" (home-subpath \"/Library/FontCollections\")\n"
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" (home-subpath \"/Library/Keyboard Layouts\")\n"
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" (home-subpath \"/Library/Input Methods\")\n"
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" (home-subpath \"/Library/Spelling\")\n"
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"\n"
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" (subpath appdir-path)\n"
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"\n"
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" (literal appPath)\n"
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" (literal appBinaryPath))\n"
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"\n"
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" (allow-shared-list \"org.mozilla.plugincontainer\")\n"
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"\n"
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"; the following rule should be removed when microphone access\n"
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"; is brokered through the content process\n"
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" (allow device-microphone)\n"
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"\n"
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" (allow file* (var-folders2-regex \"/com\\.apple\\.IntlDataCache\\.le$\"))\n"
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" (allow file-read*\n"
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" (var-folders2-regex \"/com\\.apple\\.IconServices/\")\n"
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" (var-folders2-regex \"/[^/]+\\.mozrunner/extensions/[^/]+/chrome/[^/]+/content/[^/]+\\.j(s|ar)$\"))\n"
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"\n"
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" (allow file-write* (var-folders2-regex \"/org\\.chromium\\.[a-zA-Z0-9]*$\"))\n"
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"\n"
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"; Per-user and system-wide Extensions dir\n"
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" (allow file-read*\n"
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" (home-regex \"/Library/Application Support/[^/]+/Extensions/[^/]/\")\n"
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" (resolving-regex \"/Library/Application Support/[^/]+/Extensions/[^/]/\"))\n"
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"\n"
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"; The following rules impose file access restrictions which get\n"
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"; more restrictive in higher levels. When file-origin-specific\n"
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"; content processes are used for file:// origin browsing, the\n"
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"; global file-read* permission should be removed from each level.\n"
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"\n"
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"; level 1: global read access permitted, no global write access\n"
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" (if (= sandbox-level 1) (allow file-read*))\n"
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"\n"
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"; level 2: global read access permitted, no global write access,\n"
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"; no read/write access to ~/Library,\n"
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"; no read/write access to $PROFILE,\n"
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"; read access permitted to $PROFILE/{extensions,weave,chrome}\n"
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" (if (= sandbox-level 2)\n"
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" (if (not (zero? hasFilePrivileges))\n"
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" ; This process has blanket file read privileges\n"
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" (allow file-read*)\n"
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" ; This process does not have blanket file read privileges\n"
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" (if (not (zero? hasProfileDir))\n"
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" ; we have a profile dir\n"
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" (begin\n"
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" (allow file-read* (require-all\n"
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" (require-not (home-subpath \"/Library\"))\n"
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" (require-not (subpath profileDir))))\n"
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" (allow file-read*\n"
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" (profile-subpath \"/extensions\")\n"
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" (profile-subpath \"/weave\")\n"
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" (profile-subpath \"/chrome\")))\n"
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" ; we don't have a profile dir\n"
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" (allow file-read* (require-not (home-subpath \"/Library\"))))))\n"
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"\n"
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"; accelerated graphics\n"
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" (allow-shared-preferences-read \"com.apple.opengl\")\n"
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" (allow-shared-preferences-read \"com.nvidia.OpenGL\")\n"
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" (allow mach-lookup\n"
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" (global-name \"com.apple.cvmsServ\"))\n"
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" (allow iokit-open\n"
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" (iokit-connection \"IOAccelerator\")\n"
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" (iokit-user-client-class \"IOAccelerationUserClient\")\n"
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" (iokit-user-client-class \"IOSurfaceRootUserClient\")\n"
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" (iokit-user-client-class \"IOSurfaceSendRight\")\n"
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" (iokit-user-client-class \"IOFramebufferSharedUserClient\")\n"
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" (iokit-user-client-class \"AppleSNBFBUserClient\")\n"
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" (iokit-user-client-class \"AGPMClient\")\n"
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" (iokit-user-client-class \"AppleGraphicsControlClient\")\n"
|
|
" (iokit-user-client-class \"AppleGraphicsPolicyClient\"))\n"
|
|
"\n"
|
|
"; bug 1153809\n"
|
|
" (allow iokit-open\n"
|
|
" (iokit-user-client-class \"NVDVDContextTesla\")\n"
|
|
" (iokit-user-client-class \"Gen6DVDContext\"))\n"
|
|
"\n"
|
|
"; bug 1201935\n"
|
|
" (allow file-read*\n"
|
|
" (home-subpath \"/Library/Caches/TemporaryItems\"))\n"
|
|
"\n"
|
|
"; bug 1237847\n"
|
|
" (allow file-read*\n"
|
|
" (subpath appTempDir))\n"
|
|
" (allow file-write*\n"
|
|
" (subpath appTempDir))\n"
|
|
"\n"
|
|
"; bug 1324610\n"
|
|
" (allow network-outbound (literal \"/private/var/run/cupsd\"))\n"
|
|
#ifdef DEBUG
|
|
"\n"
|
|
"; bug 1303987\n"
|
|
" (allow file-write* (var-folders-regex \"/\"))\n"
|
|
#endif
|
|
")\n";
|
|
|
|
static const char* NO_LOGGING_CMD = "(with no-log)";
|
|
|
|
bool StartMacSandbox(MacSandboxInfo aInfo, std::string &aErrorMessage)
|
|
{
|
|
char *profile = NULL;
|
|
if (aInfo.type == MacSandboxType_Plugin) {
|
|
asprintf(&profile, pluginSandboxRules,
|
|
aInfo.shouldLog ? "" : NO_LOGGING_CMD,
|
|
aInfo.pluginInfo.pluginBinaryPath.c_str(),
|
|
aInfo.appPath.c_str(),
|
|
aInfo.appBinaryPath.c_str());
|
|
|
|
if (profile &&
|
|
aInfo.pluginInfo.type == MacSandboxPluginType_GMPlugin_EME_Widevine) {
|
|
char *widevineProfile = NULL;
|
|
asprintf(&widevineProfile, "%s%s", profile,
|
|
widevinePluginSandboxRulesAddend);
|
|
free(profile);
|
|
profile = widevineProfile;
|
|
}
|
|
}
|
|
else if (aInfo.type == MacSandboxType_Content) {
|
|
MOZ_ASSERT(aInfo.level >= 1);
|
|
if (aInfo.level >= 1) {
|
|
asprintf(&profile, contentSandboxRules, aInfo.level,
|
|
OSXVersion::OSXVersionMinor(),
|
|
aInfo.appPath.c_str(),
|
|
aInfo.appBinaryPath.c_str(),
|
|
aInfo.appDir.c_str(),
|
|
aInfo.appTempDir.c_str(),
|
|
aInfo.hasSandboxedProfile ? 1 : 0,
|
|
aInfo.profileDir.c_str(),
|
|
getenv("HOME"),
|
|
aInfo.hasFilePrivileges ? 1 : 0,
|
|
aInfo.shouldLog ? "" : NO_LOGGING_CMD);
|
|
} else {
|
|
fprintf(stderr,
|
|
"Content sandbox disabled due to sandbox level setting\n");
|
|
return false;
|
|
}
|
|
}
|
|
else {
|
|
char *msg = NULL;
|
|
asprintf(&msg, "Unexpected sandbox type %u", aInfo.type);
|
|
if (msg) {
|
|
aErrorMessage.assign(msg);
|
|
free(msg);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
if (!profile) {
|
|
fprintf(stderr, "Out of memory in StartMacSandbox()!\n");
|
|
return false;
|
|
}
|
|
|
|
char *errorbuf = NULL;
|
|
int rv = sandbox_init(profile, 0, &errorbuf);
|
|
if (rv) {
|
|
if (errorbuf) {
|
|
char *msg = NULL;
|
|
asprintf(&msg, "sandbox_init() failed with error \"%s\"", errorbuf);
|
|
if (msg) {
|
|
aErrorMessage.assign(msg);
|
|
free(msg);
|
|
}
|
|
fprintf(stderr, "profile: %s\n", profile);
|
|
sandbox_free_error(errorbuf);
|
|
}
|
|
}
|
|
free(profile);
|
|
if (rv) {
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
} // namespace mozilla
|