From mboxrd@z Thu Jan  1 00:00:00 1970
From: Michael Tremer <michael.tremer@ipfire.org>
To: development@lists.ipfire.org
Subject: [PATCH 33/50] oci: user-data: Try to decode base64 content
Date: Tue, 22 Feb 2022 12:51:18 +0000
Message-ID: <20220222125135.1211290-34-michael.tremer@ipfire.org>
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Terraform only supports sending any shell scripts encoded in base64
which is however not required by Oracle. Therefore we have to test if
the script is encoded or not.

Signed-off-by: Michael Tremer <michael.tremer(a)ipfire.org>
Reviewed-by: Peter M=C3=BCller <peter.mueller(a)ipfire.org>
---
 src/initscripts/helper/oci-setup | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/src/initscripts/helper/oci-setup b/src/initscripts/helper/oci-se=
tup
index 4dbc05ae3..782fde5a2 100644
--- a/src/initscripts/helper/oci-setup
+++ b/src/initscripts/helper/oci-setup
@@ -34,6 +34,24 @@ get() {
 	wget -qO - "http://169.254.169.254/opc/v1/${file}"
 }
=20
+try_base64_decode() {
+	local input=3D"${1}"
+
+	local tmp=3D"$(mktemp)"
+
+	# Try to decode this and return output if successful
+	if base64 -d <<< "${input}" > "${tmp}" 2>/dev/null; then
+		echo "$(<${tmp})"
+
+	# Otherwise just return the input
+	else
+		echo "${input}"
+	fi
+
+	# Cleanup
+	unlink "${tmp}"
+}
+
 to_address() {
 	local n=3D"${1}"
=20
@@ -134,6 +152,9 @@ import_oci_configuration() {
 		# Download a startup script
 		local script=3D"$(get instance/metadata/user_data)"
=20
+		# Try to decode this
+		script=3D"$(try_base64_decode "${script}")"
+
 		# Execute the script
 		if [ "${script:0:2}" =3D "#!" ]; then
 			echo "${script}" > /tmp/user-data.script
--=20
2.30.2


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