From 434c1ff94e944f8a17feb6f0aa0b0543eca54684 Mon Sep 17 00:00:00 2001
From: Christoph <ckubu@oopen.de>
Date: Mon, 16 Mar 2020 01:29:49 +0100
Subject: [PATCH] Add script 'create-shadow-password-from-file.sh'

---
 snippets/create-shadow-password-from-file.sh | 53 ++++++++++++++++++++
 1 file changed, 53 insertions(+)
 create mode 100755 snippets/create-shadow-password-from-file.sh

diff --git a/snippets/create-shadow-password-from-file.sh b/snippets/create-shadow-password-from-file.sh
new file mode 100755
index 0000000..59dc5f0
--- /dev/null
+++ b/snippets/create-shadow-password-from-file.sh
@@ -0,0 +1,53 @@
+#!/usr/bin/env bash
+
+script_name="$(basename $(realpath $0))"
+working_dir="$(dirname $(realpath $0))"
+
+conf_file="${working_dir}/conf/${script_name%%.*}.conf"
+
+LOCK_DIR="/tmp/$(basename $0).$$.LOCK"
+log_file="${LOCK_DIR}/${script_name%%.*}.log"
+
+# ----------
+# Variables
+# ----------
+
+password_file="/tmp/passwd"
+
+# ----------
+# Functions
+# ----------
+
+trim() {
+    local var="$*"
+    var="${var#"${var%%[![:space:]]*}"}"   # remove leading whitespace characters
+    var="${var%"${var##*[![:space:]]}"}"   # remove trailing whitespace characters
+    echo -n "$var"
+}
+
+
+
+while IFS=' ' read _user _pw _salt || [[ -n $_line ]] ; do
+
+   user=$_user
+   passwd=$_pw
+   salt=$_salt
+
+   # ignore empty lines
+   #
+   [[ -z "$(trim $user)" ]] && continue
+   [[ "$(trim $user)" =~ ^# ]] && continue
+
+   [[ -z $salt ]] && salt=$(tr -cd 'a-zA-Z0-9' < /dev/urandom | head -c 8)
+
+   passwd_hash="$(mkpasswd -m SHA-512 $passwd $salt)"
+
+   echo ""
+   echo "password: '${passwd}' - salt: $ $salt"
+   echo "${user}:$passwd_hash"
+   
+done < "$password_file"
+
+
+echo ""
+exit 0