#!/usr/bin/php
<?php

# Copyright (c) 2013 Yubico AB
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
#   * Redistributions of source code must retain the above copyright
#     notice, this list of conditions and the following disclaimer.
#
#   * Redistributions in binary form must reproduce the above
#     copyright notice, this list of conditions and the following
#     disclaimer in the documentation and/or other materials provided
#     with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

set_include_path(get_include_path() . PATH_SEPARATOR . "/usr/share/yubikey-val:/etc/yubico/val");

$options = getopt("h", array("help", "email::", "notes::", "otp::", "urandom"));

if(array_key_exists('h', $options) || array_key_exists('help', $options)) {
  echo "Usage: ".$argv[0]." [ OPTIONS ] [ num_clients ]\n";
  echo "  Unless num_clients is defined, one client will be generated.\n\n";
  echo "Options supported by ".$argv[0]."\n";
  echo "  --urandom\n";
  echo "        Use /dev/urandom instead of /dev/random as entropy source.";
  echo "  --email=EMAIL\n";
  echo "        Sets the e-mail field of the created clients\n";
  echo "  --notes=NOTES\n";
  echo "        Sets the notes field of the created clients\n";
  echo "  --otp=OTP\n";
  echo "        Sets the otp field of the created clients\n";
  exit(1);
}

require_once 'ykval-config.php';
require_once 'ykval-db.php';

$logname="ykval-gen-clients";
$myLog = new Log($logname);

$db = Db::GetDatabaseHandle($baseParams, $logname);

if(!$db->connect()) {
  $myLog->log(LOG_WARNING, "Could not connect to database");
  error_log("Could not connect to database");
  exit(1);
}

$count=1;
if($last_arg = intval(array_pop($argv))) {
  $count = $last_arg;
}

$result = $db->customQuery("SELECT id FROM clients ORDER BY id DESC LIMIT 1");
$row = $db->fetchArray($result);
$db->closeCursor($result);
if($row) {
  $next_id = $row['id']+1;
} else {
  $next_id = 1;
}

$random = array_key_exists('urandom', $options) ? "/dev/urandom" : "/dev/random";
$fh = fopen($random, "r");
if(!$fh) {
 die("cannot open ".$random);
}

for ($i=0; $i<$count; $i++) {
  $client_id = $next_id++;
  if (!($rnd = fread ($fh, 20))) {
    die("cannot read from ".$random);
  }
  $secret = base64_encode($rnd);

  $params = array(
    "id" => $client_id,
    "active" => 1,
    "created" => time(),
    "secret" => $secret,
    "email" => array_key_exists('email', $options) ? $options['email'] : '',
    "notes" => array_key_exists('notes', $options) ? $options['notes'] : '',
    "otp" => array_key_exists('otp', $options) ? $options['otp'] : ''
  );

  $query="INSERT INTO clients " .
      "(id,active,created,secret,email,notes,otp) VALUES " .
      "('" . $params["id"] . "', " .
      "'" . $params["active"] . "', " .
      "'" . $params['created'] . "'," .
      "'" . $params['secret'] . "'," .
      "'" . $params['email'] . "'," .
      "'" . $params['notes'] . "'," .
      "'" . $params['otp'] . "')";

  if(!$db->customQuery($query)){
    $myLog->log(LOG_ERR, "Failed to insert new client with query " . $query);
    error_log("Failed to insert new client with query " . $query);
    exit(1);
  }

  echo $client_id.",".$secret."\n";
}

fclose($fh);

$myLog->log(LOG_NOTICE, "Successfully inserted generated clients into database");