From 0f112e0e699dc7e8609c7496b19fbf13bd213137 Mon Sep 17 00:00:00 2001
From: Jamil <jamilbk@users.noreply.github.com>
Date: Mon, 13 May 2024 07:16:52 -0700
Subject: [PATCH] fix(gateway): Detect executables with 'ELF' string (#4974)

On some older systems (CentOS 7), `file gateway` will produce this:

```
firezone-gateway: ELF 64-bit LSB shared object, x86-64, version 1 (SYSV), dynamically linked, stripped
```

`ELF` is a much more reliable means of detecting the file is a binary
executable.
---
 scripts/gateway-systemd-install.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/gateway-systemd-install.sh b/scripts/gateway-systemd-install.sh
index 929f7f0e7..59ec18863 100755
--- a/scripts/gateway-systemd-install.sh
+++ b/scripts/gateway-systemd-install.sh
@@ -75,7 +75,7 @@ if [ ! -e /usr/local/bin/firezone-gateway ]; then
   # See https://www.github.com/firezone/firezone/releases for available binaries
   curl -fsSL ${FIREZONE_ARTIFACT_URL}/${FIREZONE_VERSION}/\$arch -o /tmp/firezone-gateway
 
-  if file /tmp/firezone-gateway | grep -q "executable"; then
+  if file /tmp/firezone-gateway | grep -q "ELF"; then
     mv /tmp/firezone-gateway /usr/local/bin/firezone-gateway
   else
     echo "/tmp/firezone-gateway is not an executable!"