From 87e3b5f076228f90f0cc812616d38e2e15e0a0af Mon Sep 17 00:00:00 2001
From: Adam Ierymenko <adam.ierymenko@gmail.com>
Date: Fri, 13 Jan 2017 12:42:49 -0800
Subject: Mac updater SFX code.

---
 ext/installfiles/mac-update/updater.tmpl.sh | 49 +++++++++++++++++++++++++++++
 1 file changed, 49 insertions(+)
 create mode 100644 ext/installfiles/mac-update/updater.tmpl.sh

diff --git a/ext/installfiles/mac-update/updater.tmpl.sh b/ext/installfiles/mac-update/updater.tmpl.sh
new file mode 100644
index 00000000..b340ef13
--- /dev/null
+++ b/ext/installfiles/mac-update/updater.tmpl.sh
@@ -0,0 +1,49 @@
+#!/bin/bash
+
+export PATH=/bin:/usr/bin:/sbin:/usr/sbin
+shopt -s expand_aliases
+
+if [ "$UID" -ne 0 ]; then
+	echo '*** Auto-updater must be run as root.'
+	exit 1
+fi
+
+scriptPath="`dirname "$0"`/`basename "$0"`"
+if [ ! -s "$scriptPath" ]; then
+	scriptPath="$0"
+	if [ ! -s "$scriptPath" ]; then
+		echo "Installer cannot determine its own path; $scriptPath is not readable."
+		exit 2
+	fi
+fi
+
+endMarkerIndex=`grep -a -b -E '^################' "$scriptPath" | head -c 16 | cut -d : -f 1`
+if [ "$endMarkerIndex" -le 100 ]; then
+	echo 'Internal error: unable to find end of script / start of binary data marker.'
+	exit 2
+fi
+blobStart=`expr $endMarkerIndex + 17`
+if [ "$blobStart" -le "$endMarkerIndex" ]; then
+	echo 'Internal error: unable to find end of script / start of binary data marker.'
+	exit 2
+fi
+
+rm -f /tmp/ZeroTierOne-update.pkg
+tail -c +$blobStart "$scriptPath" >/tmp/ZeroTierOne-update.pkg
+chmod 0600 /tmp/ZeroTierOne-update.pkg
+
+if [ -s /tmp/ZeroTierOne-update.pkg ]; then
+	rm -f '/Library/Application Support/ZeroTier/One/latest-update.exe' '/Library/Application Support/ZeroTier/One/latest-update.json' /tmp/ZeroTierOne-update.log
+	installer -verbose -pkg /tmp/ZeroTierOne-update.pkg -target / >/tmp/ZeroTierOne-update.log 2>&1
+	rm -f /tmp/ZeroTierOne-update.pkg
+	exit 0
+else
+	echo '*** Error self-unpacking update!'
+	exit 3
+fi
+
+# Do not remove the last line or add a carriage return to it! The installer
+# looks for an unterminated line beginning with 16 #'s in itself to find
+# the binary blob data, which is appended after it.
+
+################
\ No newline at end of file
-- 
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