#!/bin/bash

TMPDIR=imtmp
mkdir $TMPDIR

nkf -w -Lu $1 | split -l 1 $1 $TMPDIR/add.

for i in $TMPDIR/*
do
    IMUSR=$(cut -d , -f 1 $i)
    USRID=$(cut -d , -f 2 $i)
    IMPWD=$(cut -d , -f 3 $i)

    SALT=$(dd if=/dev/urandom count=10 2>/dev/null | strings | \
    tr -d '\n[:punct:][:cntrl:][:blank:]' | cut -b 1-8)   
    MD5CRYPT=$(perl -e "print crypt('$IMPWD','\$1\$'.'$SALT'.'\$')")

    useradd -M -u $USRID -d /home/$IMUSR -s /sbin/nologin -p $MD5CRYPT $IMUSR
    
    mkdir -m 700 /home/$IMUSR
    mkdir -m 700 /home/$IMUSR/Maildir
    mkdir -m 700 /home/$IMUSR/Maildir/{tmp,new,cur}
    chown -R $IMUSR:$IMUSR /home/$IMUSR
done
rm -R $TMPDIR