From 34db2ca7f04864da8b2e9ad10438045048750a72 Mon Sep 17 00:00:00 2001
From: Duncan <legowerewolf@gmail.com>
Date: Sun, 9 Oct 2022 19:16:40 -0400
Subject: [PATCH]

---
 tailscale.sh | 65 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100644 tailscale.sh

diff --git a/tailscale.sh b/tailscale.sh
new file mode 100644
index 0000000..3494238
--- /dev/null
+++ b/tailscale.sh
@@ -0,0 +1,65 @@
+#!/usr/bin/env bash
+
+# make system configuration vars available
+source /etc/os-release
+
+# set invocation settings for this script:
+# -e: Exit immediately if a command exits with a non-zero status.
+# -u: Treat unset variables as an error when substituting.
+# -o pipefail: the return value of a pipeline is the status of the last command to exit with a non-zero status, or zero if no command exited with a non-zero status
+set -eu -o pipefail
+
+# save the current directory silently
+pushd . > /dev/null
+
+# make a temporary directory, save the name, and move into it
+dir="$(mktemp -d)"
+cd "${dir}"
+
+echo -n "Installing Tailscale: Getting version..."
+
+# get info for the latest version of Tailscale
+tarball="$(curl -s 'https://pkgs.tailscale.com/stable/?mode=json' | jq -r .Tarballs.amd64)"
+version="$(echo ${tarball} | cut -d_ -f2)"
+
+echo -n "got ${version}. Downloading..."
+
+# download the Tailscale package itself
+curl -s "https://pkgs.tailscale.com/stable/${tarball}" -o tailscale.tgz
+
+echo -n "done. Installing..."
+
+# extract the tailscale binaries
+tar xzf tailscale.tgz
+tar_dir="$(echo ${tarball} | cut -d. -f1-3)"
+test -d $tar_dir
+
+# create our target directory structure
+mkdir -p tailscale/usr/{bin,sbin,lib/{systemd/system,extension-release.d}}
+
+# pull things into the right place in the target dir structure
+cp -rf $tar_dir/tailscale tailscale/usr/bin/tailscale
+cp -rf $tar_dir/tailscaled tailscale/usr/sbin/tailscaled
+
+# write a systemd extension-release file
+echo -e "SYSEXT_LEVEL=1.0\nID=steamos\nVERSION_ID=${VERSION_ID}" >> tailscale/usr/lib/extension-release.d/extension-release.tailscale
+
+# create the system extension folder if it doesn't already exist, remove the old version of our tailscale extension, and install our new one
+mkdir -p /var/lib/extensions
+rm -rf /var/lib/extensions/tailscale
+cp -rf tailscale /var/lib/extensions/
+
+mkdir -p /etc/default
+touch /etc/default/tailscaled
+
+# return to our original directory (silently) and clean up
+popd > /dev/null
+rm -rf "${dir}"
+
+systemd-sysext refresh > /dev/null 2>&1
+systemctl daemon-reload > /dev/null
+
+systemctl enable tailscaled --now
+
+echo "done."
+echo "If updating, reboot or run the following to finish the process: sudo systemctl restart tailscaled"
\ No newline at end of file