mirror of
https://github.com/tailscale/tailscale.git
synced 2024-11-29 04:55:31 +00:00
version: undo previous "optimization", do more work lazily
Commit 59c254579e moved a lot of work
from functions that could be eliminated at compile time (because
tests against runtime.GOOS are compile-time constant), into code
that must always run before main().
So, revert that, and instead optimize the package only by moving the
remaining string processing code behind sync.Onces.
Signed-off-by: David Anderson <danderson@tailscale.com>
This commit is contained in:
David Anderson
Dave Anderson
parent
2ca6dd1f1d
commit
9ad36d17a3
108
version/prop.go
108
version/prop.go
@ -4,34 +4,126 @@
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package version
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import (
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"os"
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"path/filepath"
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"runtime"
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"strconv"
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"strings"
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"sync"
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"tailscale.com/tailcfg"
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)
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// IsMobile reports whether this is a mobile client build.
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func IsMobile() bool { return isMobile }
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func IsMobile() bool {
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return runtime.GOOS == "android" || runtime.GOOS == "ios"
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}
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// OS returns runtime.GOOS, except instead of returning "darwin" it
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// returns "iOS" or "macOS".
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func OS() string { return legacyOS }
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// OS returns runtime.GOOS, except instead of returning "darwin" it returns
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// "iOS" or "macOS".
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func OS() string {
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// If you're wondering why we have this function that just returns
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// runtime.GOOS written differently: in the old days, Go reported
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// GOOS=darwin for both iOS and macOS, so we needed this function to
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// differentiate them. Then a later Go release added GOOS=ios as a separate
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// platform, but by then the "iOS" and "macOS" values we'd picked, with that
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// exact capitalization, were already baked into databases.
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if runtime.GOOS == "ios" {
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return "iOS"
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}
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if runtime.GOOS == "darwin" {
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return "macOS"
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}
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return runtime.GOOS
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}
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var (
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macFlavorOnce sync.Once
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isMacSysExt bool
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isMacSandboxed bool
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)
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func initMacFlavor() {
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exe, err := os.Executable()
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if err != nil {
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return
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}
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isMacSysExt = filepath.Base(exe) == "io.tailscale.ipn.macsys.network-extension"
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isMacSandboxed = isMacSysExt || strings.HasSuffix(exe, "/Contents/MacOS/Tailscale") || strings.HasSuffix(exe, "/Contents/MacOS/IPNExtension")
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}
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// IsSandboxedMacOS reports whether this process is a sandboxed macOS
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// process (either the app or the extension). It is true for the Mac App Store
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// and macsys (System Extension) version on macOS, and false for
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// tailscaled-on-macOS.
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func IsSandboxedMacOS() bool { return isSandboxedMacOS }
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func IsSandboxedMacOS() bool {
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if runtime.GOOS != "darwin" {
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return false
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}
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macFlavorOnce.Do(initMacFlavor)
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return isMacSandboxed
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}
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// IsMacSysExt whether this binary is from the standalone "System
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// Extension" (a.k.a. "macsys") version of Tailscale for macOS.
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func IsMacSysExt() bool { return isMacSysExt }
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func IsMacSysExt() bool {
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if runtime.GOOS != "darwin" {
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return false
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}
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macFlavorOnce.Do(initMacFlavor)
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return isMacSysExt
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}
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var (
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winFlavorOnce sync.Once
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isWindowsGUI bool
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)
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func initWinFlavor() {
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exe, err := os.Executable()
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if err != nil {
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return
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}
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isWindowsGUI = strings.EqualFold(exe, "tailscale-ipn.exe") || strings.EqualFold(exe, "tailscale-ipn")
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}
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// IsWindowsGUI reports whether the current process is the Windows GUI.
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func IsWindowsGUI() bool { return isWindowsGUI }
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func IsWindowsGUI() bool {
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if runtime.GOOS != "windows" {
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return false
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}
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exe, _ := os.Executable()
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exe = filepath.Base(exe)
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return strings.EqualFold(exe, "tailscale-ipn.exe") || strings.EqualFold(exe, "tailscale-ipn")
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}
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var (
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isUnstableOnce sync.Once
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isUnstableBuild bool
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)
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// IsUnstableBuild reports whether this is an unstable build.
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// That is, whether its minor version number is odd.
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func IsUnstableBuild() bool { return isUnstable }
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func IsUnstableBuild() bool {
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isUnstableOnce.Do(initUnstable)
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return isUnstableBuild
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}
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func initUnstable() {
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_, rest, ok := strings.Cut(Short, ".")
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if !ok {
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return
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}
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minorStr, _, ok := strings.Cut(rest, ".")
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if !ok {
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return
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}
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minor, err := strconv.Atoi(minorStr)
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if err != nil {
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return
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}
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isUnstableBuild = minor%2 == 1
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}
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// Meta is a JSON-serializable type that contains all the version
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// information.
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@ -5,93 +5,29 @@
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package version
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import (
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"os"
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"path/filepath"
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"runtime"
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"runtime/debug"
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"strconv"
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"strings"
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tailscaleroot "tailscale.com"
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)
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var (
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// Long is a full version number for this build, of the form
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// "x.y.z-commithash" for builds stamped in the usual way (see build_dist.sh
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// in the root) or, for binaries built by hand with the go tool, it's of the
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// form "1.23.0-dev20220316-t29837428937{,-dirty}" where "1.23.0" comes from
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// ../VERSION.txt and the part after dev is YYYYMMDD of the commit time, and
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// the part after -t is the commit hash. The dirty suffix is whether there
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// are uncommitted changes.
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Long string
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// "x.y.z-commithash" for builds stamped in the usual way (see
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// build_dist.sh in the root) or, for binaries built by hand with the
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// go tool, it's of the form "1.23.0-dev20220316-t29837428937{,-dirty}"
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// where "1.23.0" comes from ../VERSION.txt and the part after dev
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// is YYYYMMDD of the commit time, and the part after -t is the commit
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// hash. The dirty suffix is whether there are uncommitted changes.
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var Long = ""
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// Short is a short version number for this build, of the form
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// "x.y.z" for builds stamped in the usual way (see
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// build_dist.sh in the root) or, for binaries built by hand with the
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// go tool, it's like Long's dev form, but ending at the date part,
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// of the form "1.23.0-dev20220316".
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Short string
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// GitCommit, if non-empty, is the git commit of the
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// github.com/tailscale/tailscale repository at which Tailscale was
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// built. Its format is the one returned by `git describe --always
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// --exclude "*" --dirty --abbrev=200`.
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GitCommit string
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// GitDirty is whether Go stamped the binary as having dirty version
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// control changes in the working directory (debug.ReadBuildInfo
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// setting "vcs.modified" was true).
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GitDirty bool
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// ExtraGitCommit, if non-empty, is the git commit of a "supplemental"
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// repository at which Tailscale was built. Its format is the same as
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// gitCommit.
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//
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// ExtraGitCommit is used to track the source revision when the main
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// Tailscale repository is integrated into and built from another
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// repository (for example, Tailscale's proprietary code, or the
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// Android OSS repository). Together, GitCommit and ExtraGitCommit
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// exactly describe what repositories and commits were used in a
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// build.
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ExtraGitCommit = ""
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// isUnstable is whether the current build appears to be an unstable, i.e. with
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// an odd minor version number.
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isUnstable bool
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// legacyOS is runtime.GOOS, except on apple devices where it's either "iOS" or
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// "macOS" (with that exact case).
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//
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// This used to be a thing because Go reported both macOS and iOS as "darwin"
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// and we needed to tell them apart. But then Go learned GOOS=ios and
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// GOOS=darwin as separate things, but we're still stuck with this function
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// because of the odd casing we picked, which has ossified into databases.
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legacyOS string
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// isMobile is whether the current build is for a mobile device.
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isMobile bool
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// isSandboxedMacOS is whether the current binary is any binary in the mac store
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// or standalone sysext mac apps.
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isSandboxedMacOS bool
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// isMacSysExt is whether the current binary is the mac system extension binary.
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isMacSysExt bool
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// isWindowsGUI is whether the current binary is the Windows GUI binary.
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isWindowsGUI bool
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// majorMinorPatch is the major.minor.patch portion of Short.
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majorMinorPatch string
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)
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var Short = ""
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func init() {
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initVersion()
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initUnstable()
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initMiscTraits()
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}
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func initVersion() {
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defer func() {
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// Must be run after Short has been initialized, easiest way to do that
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// is a defer.
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@ -139,38 +75,28 @@ func initVersion() {
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Long = Short + "-t" + commitHashAbbrev + dirty
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}
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func initUnstable() {
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_, rest, ok := strings.Cut(Short, ".")
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if !ok {
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return
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}
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minorStr, _, ok := strings.Cut(rest, ".")
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if !ok {
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return
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}
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minor, err := strconv.Atoi(minorStr)
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if err != nil {
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return
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}
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isUnstable = minor%2 == 1
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}
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// GitCommit, if non-empty, is the git commit of the
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// github.com/tailscale/tailscale repository at which Tailscale was
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// built. Its format is the one returned by `git describe --always
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// --exclude "*" --dirty --abbrev=200`.
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var GitCommit = ""
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func initMiscTraits() {
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exe, _ := os.Executable()
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base := filepath.Base(exe)
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// GitDirty is whether Go stamped the binary as having dirty version
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// control changes in the working directory (debug.ReadBuildInfo
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// setting "vcs.modified" was true).
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var GitDirty bool
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legacyOS = runtime.GOOS
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switch runtime.GOOS {
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case "darwin":
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legacyOS = "macOS"
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isMacSysExt = strings.HasPrefix(base, "io.tailscale.ipn.macsys.network-extension")
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isSandboxedMacOS = isMacSysExt || strings.HasSuffix(exe, "/Contents/MacOS/Tailscale") || strings.HasSuffix(exe, "/Contents/MacOS/IPNExtension")
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case "ios":
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legacyOS = "iOS"
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isMobile = true
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case "android":
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isMobile = true
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case "windows":
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isWindowsGUI = strings.EqualFold(base, "tailscale-ipn.exe") || strings.EqualFold(base, "tailscale-ipn")
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}
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}
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// ExtraGitCommit, if non-empty, is the git commit of a "supplemental"
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// repository at which Tailscale was built. Its format is the same as
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// gitCommit.
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//
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// ExtraGitCommit is used to track the source revision when the main
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// Tailscale repository is integrated into and built from another
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// repository (for example, Tailscale's proprietary code, or the
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// Android OSS repository). Together, GitCommit and ExtraGitCommit
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// exactly describe what repositories and commits were used in a
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// build.
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var ExtraGitCommit = ""
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// majorMinorPatch is the major.minor.patch portion of Short.
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var majorMinorPatch string
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