Merge pull request #6 from linuxserver/bullseye-secrets

Warn about newlines in secrets (bullseye)

Author: thespad

root/etc/s6-overlay/s6-rc.d/init-envfile/run

@@ -1,17 +1,19 @@
 #!/usr/bin/with-contenv bash
 # shellcheck shell=bash
 
-if find /run/s6/container_environment/*"FILE__"* -maxdepth 1 > /dev/null 2>&1; then
-    for FILENAME in /run/s6/container_environment/*; do
-        if [[ "${FILENAME##*/}" == "FILE__"* ]]; then
+if find /run/s6/container_environment/FILE__* -maxdepth 1 > /dev/null 2>&1; then
+    for FILENAME in /run/s6/container_environment/FILE__*; do
             SECRETFILE=$(cat "${FILENAME}")
             if [[ -f ${SECRETFILE} ]]; then
                 FILESTRIP=${FILENAME//FILE__/}
+                if [[ $(tail -n1 "${SECRETFILE}" | wc -l) != 0 ]]; then
+                    echo "[env-init] Your secret: ${FILENAME##*/}"
+                    echo "           contains a trailing newline and may not work as expected"
+                fi
                 cat "${SECRETFILE}" >"${FILESTRIP}"
                 echo "[env-init] ${FILESTRIP##*/} set from ${FILENAME##*/}"
             else
                 echo "[env-init] cannot find secret in ${FILENAME##*/}"
             fi
-        fi
     done
 fi