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Diffstat (limited to 'widget/cocoa/nsCocoaFeatures.mm')
| -rw-r--r-- | widget/cocoa/nsCocoaFeatures.mm | 220 |
1 files changed, 220 insertions, 0 deletions
diff --git a/widget/cocoa/nsCocoaFeatures.mm b/widget/cocoa/nsCocoaFeatures.mm new file mode 100644 index 0000000000..cf68755078 --- /dev/null +++ b/widget/cocoa/nsCocoaFeatures.mm @@ -0,0 +1,220 @@ +/* -*- 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::OnSierraExactly() { + return (macOSVersion() >= MACOS_VERSION_10_12_HEX) && (macOSVersion() < MACOS_VERSION_10_13_HEX); +} + +/* Version of OnSierraExactly as global function callable from cairo & skia */ +bool Gecko_OnSierraExactly() { return nsCocoaFeatures::OnSierraExactly(); } + +/* static */ bool nsCocoaFeatures::OnHighSierraOrLater() { + return (macOSVersion() >= MACOS_VERSION_10_13_HEX); +} + +/* static */ bool nsCocoaFeatures::OnMojaveOrLater() { + return (macOSVersion() >= MACOS_VERSION_10_14_HEX); +} + +/* static */ bool nsCocoaFeatures::OnCatalinaOrLater() { + return (macOSVersion() >= MACOS_VERSION_10_15_HEX); +} + +/* 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); +} |