#!/bin/bash
# 
# Written by Michel Decima
# Copyright 2021 Orange
#
# Generate uid mapping for pam_pkcs11 using /etc/passwd
#

(( EUID == 0 )) || { echo 2>&1 "Not root." ; exit 1 ; }

mkdir -p /etc/pam_pkcs11
# generate uid mapping for uppercase login ABCD1234 -> abcd1234
getent -s files passwd \
    | awk -F: '
        /[a-z]{4}[0-9]{4}/ { 
            printf "%s -> %s\n", toupper($1), $1 
        }' \
    >> /etc/pam_pkcs11/uid_mapping
sort -u -o /etc/pam_pkcs11/uid_mapping /etc/pam_pkcs11/uid_mapping