Update

vendor/tailscale.com/feature/hooks.go

@@ -0,0 +1,82 @@
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
+
+package feature
+
+import (
+	"net/http"
+	"net/url"
+	"os"
+	"sync"
+
+	"tailscale.com/types/logger"
+	"tailscale.com/types/persist"
+)
+
+// HookCanAutoUpdate is a hook for the clientupdate package
+// to conditionally initialize.
+var HookCanAutoUpdate Hook[func() bool]
+
+var testAllowAutoUpdate = sync.OnceValue(func() bool {
+	return os.Getenv("TS_TEST_ALLOW_AUTO_UPDATE") == "1"
+})
+
+// CanAutoUpdate reports whether the current binary is built with auto-update
+// support and, if so, whether the current platform supports it.
+func CanAutoUpdate() bool {
+	if testAllowAutoUpdate() {
+		return true
+	}
+	if f, ok := HookCanAutoUpdate.GetOk(); ok {
+		return f()
+	}
+	return false
+}
+
+// HookProxyFromEnvironment is a hook for feature/useproxy to register
+// a function to use as http.ProxyFromEnvironment.
+var HookProxyFromEnvironment Hook[func(*http.Request) (*url.URL, error)]
+
+// HookProxyInvalidateCache is a hook for feature/useproxy to register
+// [tshttpproxy.InvalidateCache].
+var HookProxyInvalidateCache Hook[func()]
+
+// HookProxyGetAuthHeader is a hook for feature/useproxy to register
+// [tshttpproxy.GetAuthHeader].
+var HookProxyGetAuthHeader Hook[func(*url.URL) (string, error)]
+
+// HookProxySetSelfProxy is a hook for feature/useproxy to register
+// [tshttpproxy.SetSelfProxy].
+var HookProxySetSelfProxy Hook[func(...string)]
+
+// HookProxySetTransportGetProxyConnectHeader is a hook for feature/useproxy to register
+// [tshttpproxy.SetTransportGetProxyConnectHeader].
+var HookProxySetTransportGetProxyConnectHeader Hook[func(*http.Transport)]
+
+// HookTPMAvailable is a hook that reports whether a TPM device is supported
+// and available.
+var HookTPMAvailable Hook[func() bool]
+
+var HookGenerateAttestationKeyIfEmpty Hook[func(p *persist.Persist, logf logger.Logf) (bool, error)]
+
+// TPMAvailable reports whether a TPM device is supported and available.
+func TPMAvailable() bool {
+	if f, ok := HookTPMAvailable.GetOk(); ok {
+		return f()
+	}
+	return false
+}
+
+// HookHardwareAttestationAvailable is a hook that reports whether hardware
+// attestation is supported and available.
+var HookHardwareAttestationAvailable Hook[func() bool]
+
+// HardwareAttestationAvailable reports whether hardware attestation is
+// supported and available (TPM on Windows/Linux, Secure Enclave on macOS|iOS,
+// KeyStore on Android)
+func HardwareAttestationAvailable() bool {
+	if f, ok := HookHardwareAttestationAvailable.GetOk(); ok {
+		return f()
+	}
+	return false
+}