"{$this->titlebook}",
"isbn" => "{$this->isbnbook}",
"weight" => "{$this->weightbook}",
"description" => "{$this->introbook}"
);
$lijst = $this->decode();
$i = count($lijst);
if($i >=1) {
usort($lijst, $this->sortISBN('isbn'));
array_push($lijst,$newbook);
} else {
$lijst = array($newbook);
}
$this->storeBook($lijst);
}
public function editBook($id)
{
// todo!
}
public function checkForm()
{
isset($_POST['title']) ? $this->titlebook = $this->cleanInput($_POST['title']) : $titlebook = false;
isset($_POST['isbn']) ? $this->isbnbook = $this->cleanInput($_POST['isbn']) : $isbnbook = false;
isset($_POST['weight']) ? $this->weightbook = $this->cleanInput($_POST['weight']) : $weightbook = false;
isset($_POST['description']) ? $this->introbook = $this->cleanInput($_POST['description']) : $introbook = false;
$_SESSION['messages'] = array();
if($this->titlebook != false) {
if(strlen($this->titlebook) > 60 ) {
$this->message('Title may not be longer than 60 characters.');
return false;
}
} else {
$this->message('Title may not be empty.');
return false;
}
if($this->isbnbook != false) {
if(!preg_match("/[a-zA-Z]/i",$this->isbnbook)) {
if(strlen($this->isbnbook) > 13 || strlen($this->isbnbook) < 13) {
$this->message('ISBN number is wrong. (13 digits.)');
return false;
}
} else {
$this->message('ISBN number may only contain numbers!');
return false;
}
}
if($this->weightbook != false) {
if(!is_int((int)$this->weightbook) || preg_match("/[a-zA-Z]/i",$this->weightbook)) {
$this->message('Weight may not contain characters.');
return false;
}
} else {
$this->message('Weight must not be empty.');
return false;
}
if($this->introbook != false) {
if(strlen($this->introbook) > 60 ) {
$this->message('Description may not be longer than 60 characters.');
return false;
}
} else {
$this->message('Description magy not be empty.');
return false;
}
}
public function tooHeavy($weight)
{
return ($weight > self::MAXWEIGHT) ? true:false;
}
public function message($value)
{
if(isset($_SESSION['messages'])) {
array_push($_SESSION['messages'],$value);
} else {
$_SESSION['messages'] = array();
}
}
public function showmessage()
{
if(isset($_SESSION['messages'])) {
echo "";
echo "Message:\r\n";
foreach($_SESSION['messages'] as $message) {
echo $message . "\r\n" ;
} echo "";
}
$_SESSION['messages'] = array();
}
/**
* Store book into BookLibrary
* @param array $book
* @return boolean, true for success, false for failure.
*/
public function storeBook($book)
{
// make a backup before doing anything.
$file = self::BOOKCASE;
$copy = self::BOOKCASE.'.bak';
@copy($file, $copy);
// convert encoding
$json = mb_convert_encoding($this->encode($book), self::FILE_ENC, self::FILE_OS);
// write file.
file_put_contents(self::BOOKCASE,$json, LOCK_EX);
}
public function deleteBook($book)
{
$lijst = $this->decode();
if($lijst !== null) {
$libraylist = usort($lijst, $this->sortISBN('isbn'));
$books = array();
foreach($lijst as $c) {
echo $book."
";
if($c['isbn'] != $book) {
array_push($books,$c);
}
}
}
$this->storeBook($books);
}
public function sortISBN($key) {
return function ($a, $b) use ($key) {
return strnatcmp($a[$key], $b[$key]);
};
}
// We don't use this, but you could call it to encrypt the JSON data.
public function encrypt($plaintext) {
$key = self::PWD; // Password is set above at the Constants
$ivlen = openssl_cipher_iv_length($cipher="AES-256-CTR");
$iv = openssl_random_pseudo_bytes($ivlen);
$ciphertext_raw = openssl_encrypt($plaintext, $cipher, $key, $options=OPENSSL_RAW_DATA, $iv);
$hmac = hash_hmac('sha256', $ciphertext_raw, $key, $as_binary=true);
$ciphertext = base64_encode($iv.$hmac.$ciphertext_raw );
return bin2hex($ciphertext);
}
// We don't use this, but you could call it to decrypt the JSON data.
public function decrypt($ciphertext) {
$key = self::PWD; // Password is set above at the Constants
$ciphertext = hex2bin($ciphertext);
$c = base64_decode($ciphertext);
$ivlen = openssl_cipher_iv_length($cipher="AES-256-CTR");
$iv = substr($c, 0, $ivlen);
$hmac = substr($c, $ivlen, $sha2len=32);
$ciphertext_raw = substr($c, $ivlen+$sha2len);
$original_plaintext = openssl_decrypt($ciphertext_raw, $cipher, $key, $options=OPENSSL_RAW_DATA, $iv);
$calcmac = hash_hmac('sha256', $ciphertext_raw, $key, $as_binary=true);
if (hash_equals($hmac, $calcmac)) { //PHP 5.6+ timing attack safe comparison
return $original_plaintext;
}
}
}
?>