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hostinfo: use the sentinel value set by the MSI installer to detect MSI package type

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The MSI installer sets a special sentinel value that we can use to detect it.

I also removed the code that bails out when the installation path is not
`Program Files`, as both the NSIS and MSI installers permit the user to install
to a different path.

Signed-off-by: Aaron Klotz <aaron@tailscale.com>
This commit is contained in:
Aaron Klotz 2022-02-22 10:39:09 -07:00
parent 4fee321004
commit e31d68d64e
2 changed files with 8 additions and 18 deletions
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2
cmd/tailscale/depaware.txt
View File

@ -81,6 +81,8 @@ tailscale.com/cmd/tailscale dependencies: (generated by github.com/tailscale/dep
W tailscale.com/util/endian from tailscale.com/net/netns
tailscale.com/util/groupmember from tailscale.com/cmd/tailscale/cli
tailscale.com/util/lineread from tailscale.com/net/interfaces+
W tailscale.com/util/winutil from tailscale.com/hostinfo
W 💣 tailscale.com/util/winutil/vss from tailscale.com/util/winutil
tailscale.com/version from tailscale.com/cmd/tailscale/cli+
tailscale.com/version/distro from tailscale.com/cmd/tailscale/cli+
tailscale.com/wgengine/filter from tailscale.com/types/netmap

24
hostinfo/hostinfo_windows.go
View File

@ -8,11 +8,11 @@
"fmt"
"os"
"path/filepath"
"strings"
"sync/atomic"
"golang.org/x/sys/windows"
"golang.org/x/sys/windows/registry"
"tailscale.com/util/winutil"
)
func init() {
@ -65,32 +65,20 @@ func packageTypeWindows() string {
if _, err := os.Stat(`C:\ProgramData\chocolatey\lib\tailscale`); err == nil {
return "choco"
}
if msiSentinel := winutil.GetRegInteger("MSI", 0); msiSentinel == 1 {
return "msi"
}
exe, err := os.Executable()
if err != nil {
return ""
}
dir := filepath.Dir(exe)
if !strings.Contains(dir, "Program Files") {
// Atypical. Not worth trying to detect. Likely open
// source tailscaled or a developer running by hand.
return ""
}
nsisUninstaller := filepath.Join(dir, "Uninstall-Tailscale.exe")
_, err = os.Stat(nsisUninstaller)
if err == nil {
return "nsis"
}
if os.IsNotExist(err) {
_, cliErr := os.Stat(filepath.Join(dir, "tailscale.exe"))
_, daemonErr := os.Stat(filepath.Join(dir, "tailscaled.exe"))
if cliErr == nil && daemonErr == nil {
// Almost certainly MSI.
// We have tailscaled.exe and tailscale.exe
// next to each other in Program Files, but no
// uninstaller.
// TODO(bradfitz,dblohm7): tighter heuristic?
return "msi"
}
}
// Atypical. Not worth trying to detect. Likely open
// source tailscaled or a developer running by hand.
return ""
}