/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at
http://mozilla.org/MPL/2.0/. */
// This file makes some assumptions about the versions of macOS.
// We are assuming that the major, minor and bugfix versions are each less than
// 256.
// There are MOZ_ASSERTs for that.
// The formula for the version integer is (major << 16) + (minor << 8) + bugfix.
#define MACOS_VERSION_MASK 0x00FFFFFF
#define MACOS_MAJOR_VERSION_MASK 0x00FFFFFF
#define MACOS_MINOR_VERSION_MASK 0x00FFFFFF
#define MACOS_BUGFIX_VERSION_MASK 0x00FFFFFF
#define MACOS_VERSION_10_0_HEX 0x000A0000
#define MACOS_VERSION_10_9_HEX 0x000A0900
#define MACOS_VERSION_10_10_HEX 0x000A0A00
#define MACOS_VERSION_10_11_HEX 0x000A0B00
#define MACOS_VERSION_10_12_HEX 0x000A0C00
#define MACOS_VERSION_10_13_HEX 0x000A0D00
#define MACOS_VERSION_10_14_HEX 0x000A0E00
#define MACOS_VERSION_10_15_HEX 0x000A0F00
#define MACOS_VERSION_10_16_HEX 0x000A1000
#define MACOS_VERSION_11_0_HEX 0x000B0000
#define MACOS_VERSION_12_0_HEX 0x000C0000
#define MACOS_VERSION_13_0_HEX 0x000D0000
#include "nsCocoaFeatures.h"
#include "nsCocoaUtils.h"
#include "nsDebug.h"
#include "nsObjCExceptions.h"
#import <Cocoa/Cocoa.h>
#include <sys/sysctl.h>
/*static*/ int32_t nsCocoaFeatures::mOSVersion = 0;
// This should not be called with unchecked aMajor, which should be >= 10.
inline int32_t AssembleVersion(int32_t aMajor, int32_t aMinor,
int32_t aBugFix) {
MOZ_ASSERT(aMajor >= 10);
return (aMajor << 16) + (aMinor << 8) + aBugFix;
}
int32_t nsCocoaFeatures::ExtractMajorVersion(int32_t aVersion) {
MOZ_ASSERT((aVersion & MACOS_VERSION_MASK) == aVersion);
return (aVersion & 0xFF0000) >> 16;
}
int32_t nsCocoaFeatures::ExtractMinorVersion(int32_t aVersion) {
MOZ_ASSERT((aVersion & MACOS_VERSION_MASK) == aVersion);
return (aVersion & 0xFF00) >> 8;
}
int32_t nsCocoaFeatures::ExtractBugFixVersion(int32_t aVersion) {
MOZ_ASSERT((aVersion & MACOS_VERSION_MASK) == aVersion);
return aVersion & 0xFF;
}
static int intAtStringIndex(NSArray* array, int index) {
return [(NSString*)[array objectAtIndex:index] integerValue];
}
void nsCocoaFeatures::GetSystemVersion(int& major, int& minor, int& bugfix
) {
major = minor = bugfix = 0;
NSString* versionString =
[[NSDictionary dictionaryWithContentsOfFile:
@"/System/Library/CoreServices/SystemVersion.plist"]
objectForKey:@"ProductVersion"];
if (!versionString) {
NS_ERROR("Couldn't read /System/Library/CoreServices/SystemVersion.plist "
"to determine macOS "
"version.");
return;
}
NSArray* versions = [versionString componentsSeparatedByString:@"."];
NSUInteger count = [versions count];
if (count > 0) {
major = intAtStringIndex(versions, 0);
if (count > 1) {
minor = intAtStringIndex(versions, 1);
if (count > 2) {
bugfix = intAtStringIndex(versions, 2);
}
}
}
}
int32_t nsCocoaFeatures::GetVersion(int32_t aMajor, int32_t aMinor,
int32_t aBugFix) {
int32_t macOSVersion;
if (aMajor < 10) {
aMajor = 10;
NS_ERROR("Couldn't determine macOS version, assuming 10.9");
macOSVersion = MACOS_VERSION_10_9_HEX;
} else if (aMajor == 10 && aMinor < 9) {
aMinor = 9;
NS_ERROR("macOS version too old, assuming 10.9");
macOSVersion = MACOS_VERSION_10_9_HEX;
} else {
MOZ_ASSERT(aMajor >= 10);
MOZ_ASSERT(aMajor < 256);
MOZ_ASSERT(aMinor >= 0);
MOZ_ASSERT(aMinor < 256);
MOZ_ASSERT(aBugFix >= 0);
MOZ_ASSERT(aBugFix < 256);
macOSVersion = AssembleVersion(aMajor, aMinor, aBugFix);
}
MOZ_ASSERT(aMajor == ExtractMajorVersion(macOSVersion));
MOZ_ASSERT(aMinor == ExtractMinorVersion(macOSVersion));
MOZ_ASSERT(aBugFix == ExtractBugFixVersion(macOSVersion));
return macOSVersion;
}
/*static*/ void nsCocoaFeatures::InitializeVersionNumbers() {
NS_OBJC_BEGIN_TRY_IGNORE_BLOCK;
// Provide an autorelease pool to avoid leaking Cocoa objects,
// as this gets called before the main autorelease pool is in place.
nsAutoreleasePool localPool;
int major, minor, bugfix;
GetSystemVersion(major, minor, bugfix);
mOSVersion = GetVersion(major, minor, bugfix);
NS_OBJC_END_TRY_IGNORE_BLOCK;
}
/* static */ int32_t nsCocoaFeatures::macOSVersion() {
// Don't let this be called while we're first setting the value...
MOZ_ASSERT((mOSVersion & MACOS_VERSION_MASK) >= 0);
if (!mOSVersion) {
mOSVersion = -1;
InitializeVersionNumbers();
}
return mOSVersion;
}
/* static */ int32_t nsCocoaFeatures::macOSVersionMajor() {
return ExtractMajorVersion(macOSVersion());
}
/* static */ int32_t nsCocoaFeatures::macOSVersionMinor() {
return ExtractMinorVersion(macOSVersion());
}
/* static */ int32_t nsCocoaFeatures::macOSVersionBugFix() {
return ExtractBugFixVersion(macOSVersion());
}
/* static */ bool nsCocoaFeatures::OnBigSurOrLater() {
// Account for the version being 10.16 or 11.0 on Big Sur.
// The version is reported as 10.16 if SYSTEM_VERSION_COMPAT is set to 1,
// or if SYSTEM_VERSION_COMPAT is not set and the application is linked
// with a pre-Big Sur SDK.
// Firefox sets SYSTEM_VERSION_COMPAT to 0 in its Info.plist, so it'll
// usually see the correct 11.* version, despite being linked against an
// old SDK. However, it still sees the 10.16 compatibility version when
// launched from the command line, see bug 1727624. (This only applies to
// the Intel build - the arm64 build is linked against a Big Sur SDK and
// always sees the correct version.)
return ((macOSVersion() >= MACOS_VERSION_10_16_HEX) ||
(macOSVersion() >= MACOS_VERSION_11_0_HEX));
}
/* static */ bool nsCocoaFeatures::OnMontereyOrLater() {
// This check only works if SYSTEM_VERSION_COMPAT is off, otherwise
// Monterey pretends to be 10.16 and is indistinguishable from Big Sur.
// In practice, this means that an Intel Firefox build can return false
// from this function if it's launched from the command line, see bug 1727624.
// This will not be an issue anymore once we link against the Big Sur SDK.
return (macOSVersion() >= MACOS_VERSION_12_0_HEX);
}
/* static */ bool nsCocoaFeatures::OnVenturaOrLater() {
// See comments above regarding SYSTEM_VERSION_COMPAT.
return (macOSVersion() >= MACOS_VERSION_13_0_HEX);
}
/* static */ bool nsCocoaFeatures::IsAtLeastVersion(int32_t aMajor,
int32_t aMinor,
int32_t aBugFix) {
return macOSVersion() >= GetVersion(aMajor, aMinor, aBugFix);
}
/*
* Returns true if the process is running under Rosetta translation. Returns
* false if running natively or if an error was encountered. We use the
* `sysctl.proc_translated` sysctl which is documented by Apple to be used
* for this purpose. Note: using this in a sandboxed process requires allowing
* the sysctl in the sandbox policy.
*/
/* static */ bool nsCocoaFeatures::ProcessIsRosettaTranslated() {
int ret = 0;
size_t size = sizeof(ret);
if (sysctlbyname("sysctl.proc_translated", &ret, &size, NULL, 0) == -1) {
if (errno != ENOENT) {
fprintf(stderr, "Failed to check for translation environment\n");
}
return false;
}
return (ret == 1);
}
