#!/bin/sh

SCRIPT="$(basename $0)"

usage() {
cat <<EOH
Allows you to set or remove the web admin password.

Usage: $0 [-d|<newpassword>]

Parameters:
 -d              Enables the default user so that no
                  password is required for the GUI.
 <newpassword>   the new admin password for the GUI. 
                  (Required if -d is not specified, 
                  ignored when -d is specified.)

EOH
exit
}

USR="admin"
KEY=""
DFLT_USR=""

for o in $*; do
  case "$o" in 
    -d) DFLT_USR="$USR";;
    -*) usage;;
    *)  KEY="$o"
  esac
done

if [ -z "$DFLT_USR" -a -z "$KEY" ]; then
  echo "ERROR: No password specified"
  echo
  usage
elif [ "$DFLT_USR" = "admin" ]; then
  uci set web.default.default_user='usr_admin'
  uci set web.uidefault.defaultuser='admin'
  echo [$SCRIPT]: The default user has been enabled for the web GUI - no password required to login
else
  SRP=$(newsrpuser -f -u $USR -p $KEY)
  SALT=$(echo $SRP | cut -d' ' -f1)
  VERIFIER=$(echo $SRP | cut -d' ' -f2)
  uci set web.usr_admin.srp_salt=$SALT
  uci set web.usr_admin.srp_verifier=$VERIFIER
  uci -q delete web.default.default_user
  uci -q delete web.uidefault.defaultuser
  echo [$SCRIPT]: The web GUI password for the admin user has been set to: $KEY
fi

uci commit web
/etc/init.d/nginx restart