all: update copyright and license headers

This updates all source files to use a new standard header for copyright
and license declaration.  Notably, copyright no longer includes a date,
and we now use the standard SPDX-License-Identifier header.

This commit was done almost entirely mechanically with perl, and then
some minimal manual fixes.

Updates #6865

Signed-off-by: Will Norris <will@tailscale.com>

cmd/tsconnect/src/app/app.tsx

@@ -1,6 +1,5 @@
-// Copyright (c) 2022 Tailscale Inc & AUTHORS All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
 
 import { render, Component } from "preact"
 import { URLDisplay } from "./url-display"

cmd/tsconnect/src/app/go-panic-display.tsx

@@ -1,6 +1,5 @@
-// Copyright (c) 2022 Tailscale Inc & AUTHORS All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
 
 export function GoPanicDisplay({
   error,

cmd/tsconnect/src/app/header.tsx

@@ -1,6 +1,5 @@
-// Copyright (c) 2022 Tailscale Inc & AUTHORS All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
 
 export function Header({ state, ipn }: { state: IPNState; ipn?: IPN }) {
   const stateText = STATE_LABELS[state]

cmd/tsconnect/src/app/index.css

@@ -1,6 +1,5 @@
-/* Copyright (c) 2022 Tailscale Inc & AUTHORS All rights reserved. */
-/* Use of this source code is governed by a BSD-style */
-/* license that can be found in the LICENSE file. */
+/* Copyright (c) Tailscale Inc & AUTHORS */
+/* SPDX-License-Identifier: BSD-3-Clause */
 
 @import "xterm/css/xterm.css";
 

cmd/tsconnect/src/app/index.ts

@@ -1,6 +1,5 @@
-// Copyright (c) 2022 Tailscale Inc & AUTHORS All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
 
 import "../wasm_exec"
 import wasmUrl from "./main.wasm"

cmd/tsconnect/src/app/ssh.tsx

@@ -1,6 +1,5 @@
-// Copyright (c) 2022 Tailscale Inc & AUTHORS All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
 
 import { useState, useCallback, useMemo, useEffect, useRef } from "preact/hooks"
 import { createPortal } from "preact/compat"

cmd/tsconnect/src/app/url-display.tsx

@@ -1,6 +1,5 @@
-// Copyright (c) 2022 Tailscale Inc & AUTHORS All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
 
 import { useState } from "preact/hooks"
 import * as qrcode from "qrcode"

cmd/tsconnect/src/lib/js-state-store.ts

@@ -1,6 +1,5 @@
-// Copyright (c) 2022 Tailscale Inc & AUTHORS All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
 
 /** @fileoverview Callbacks used by jsStateStore to persist IPN state. */
 

cmd/tsconnect/src/pkg/pkg.css

@@ -1,6 +1,5 @@
-/* Copyright (c) 2022 Tailscale Inc & AUTHORS All rights reserved. */
-/* Use of this source code is governed by a BSD-style */
-/* license that can be found in the LICENSE file. */
+/* Copyright (c) Tailscale Inc & AUTHORS */
+/* SPDX-License-Identifier: BSD-3-Clause */
 
 @import "xterm/css/xterm.css";
 

cmd/tsconnect/src/pkg/pkg.ts

@@ -1,6 +1,5 @@
-// Copyright (c) 2022 Tailscale Inc & AUTHORS All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
 
 // Type definitions need to be manually imported for dts-bundle-generator to
 // discover them.

cmd/tsconnect/src/types/esbuild.d.ts

@@ -1,6 +1,5 @@
-// Copyright (c) 2022 Tailscale Inc & AUTHORS All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
 
 /**
  * @fileoverview Type definitions for types generated by the esbuild build

cmd/tsconnect/src/types/wasm_js.d.ts

@@ -1,6 +1,5 @@
-// Copyright (c) 2022 Tailscale Inc & AUTHORS All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
 
 /**
  * @fileoverview Type definitions for types exported by the wasm_js.go Go