<?php
if ( ! function_exists('aes_encrypt')){
  function aes_encrypt($orig_data, $key, $iv = '', $raw = false) {
    $mode = MCRYPT_MODE_CBC;
    if($iv == 'ecb') {
      $iv = str_repeat("0", 16);
      $mode = MCRYPT_MODE_ECB;
    }
    $encrypter = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', $mode, '');

    $blocksize = mcrypt_enc_get_block_size($encrypter);
    $padding = $blocksize - strlen($orig_data) % $blocksize;
    $padding_text = str_repeat(chr($padding), $padding);
    $orig_data .= $padding_text;


    if(!$iv) $iv = substr($key, 0, 16);
    mcrypt_generic_init($encrypter, $key, $iv);
    $ciphertext = mcrypt_generic($encrypter, $orig_data);
    mcrypt_generic_deinit($encrypter);
    mcrypt_module_close($encrypter);
    if(!$raw) $ciphertext =  base64_encode($ciphertext);
    return $ciphertext;
  }
}
if ( ! function_exists('aes_decrypt')){
  function aes_decrypt($ciphertext, $key, $iv = '', $raw = false) {
    if($ciphertext == '') return false;
    $mode = MCRYPT_MODE_CBC;
    if($iv == 'ecb') {
      $iv = str_repeat("0", 16);
      $mode = MCRYPT_MODE_ECB;
    }

    $encrypter = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', $mode, '');
    if(!$raw) $ciphertext = base64_decode($ciphertext);

    if(!$iv) $iv = substr($key, 0, 16);
    mcrypt_generic_init($encrypter, $key, $iv);
    $orig_data = mdecrypt_generic($encrypter, $ciphertext);
    mcrypt_generic_deinit($encrypter);
    mcrypt_module_close($encrypter);
    $length = strlen($orig_data);
    $unpadding = ord($orig_data[$length - 1]);
    return substr($orig_data, 0, $length - $unpadding);
  }
}

function dbenc($s) {
  $db_enkey = "b9fc66957a4e5dbb";
  if($db_enkey) {
    $s = "genc_".aes_encrypt($s, $db_enkey);
  }
  return $s;
}
function dbdec($s) {
  $db_enkey = "b9fc66957a4e5dbb";
  if($db_enkey) {
    if(strpos($s, 'genc_') === 0) $s = substr($s, 5);
    $s = aes_decrypt($s, $db_enkey);
  }
  return $s;
}

/*
 * $paramRow Ҫ���ܵ�����
 * $where Ҫ���ܵ���������
 * */
function dbDecodeParam($paramRow,$where){
    $paramRow = json_decode($paramRow);
    $param = array();
    foreach ($paramRow as $rk => $rv){
        foreach ($rv as $k =>$v){
            switch ($rk) {
                case 'equal':
                    if (strstr($where,$k)) $param['equal'][$k] = dbdec($v);
                    else $param['equal'][$k] = $v;
                    break;
                case 'like':
                    if (strstr($where,$k)) $param['like'][$k] = dbdec($v);
                    else $param['like'][$k] = $v;
                    break;
            }
        }
    }
    $param = json_encode($param);
    return $param;
}

if(!function_exists("gquery")) {
  function gquery($url, $post = array(), $header = array())
  {
    $c = curl_init($url);
    curl_setopt($c, CURLOPT_RETURNTRANSFER, 1);
    if(defined("COOKIEJAR")) {
      curl_setopt($c, CURLOPT_COOKIEJAR, COOKIEJAR);
      curl_setopt($c, CURLOPT_COOKIEFILE, COOKIEJAR);
    }
    if($header) curl_setopt($c, CURLOPT_HTTPHEADER, $header);
    curl_setopt($c, CURLOPT_FOLLOWLOCATION, 1);
    curl_setopt($c, CURLOPT_AUTOREFERER, 1);
    curl_setopt($c, CURLOPT_TIMEOUT, 30);
    curl_setopt($c, CURLOPT_SSL_VERIFYPEER, 0);
    curl_setopt($c, CURLOPT_SSL_VERIFYHOST, 0);
    if($post) {
      if(is_array($post)) {
        $poststr = $post;
      } else {
        $poststr = $post;
      }
      curl_setopt($c, CURLOPT_POST, 1);
      curl_setopt($c, CURLOPT_POSTFIELDS, $poststr);
    }

    $content = curl_exec($c);
    curl_close($c);
    return $content;
  }
}

if(!function_exists('cutName')) {
    function cutName($user_name, $type = 'username') {
        $strlen = mb_strlen($user_name, 'utf-8');
        if ($type == 'cellphone') {
            $firstStr = mb_substr($user_name, 0, 3, 'utf-8');
            $lastStr = mb_substr($user_name, -4, 4, 'utf-8');
            return $firstStr . '****' . $lastStr;
        }
        $firstStr = mb_substr($user_name, 0, 1, 'utf-8');
        $lastStr = mb_substr($user_name, -1, 1, 'utf-8');
        if ($strlen == 2) {
            return $firstStr . str_repeat('*', mb_strlen($user_name, 'utf-8') - 1);
        } elseif ($strlen == 1) {
            return $user_name;
        } elseif ($strlen == 0) {
            return "*";
        } else {
            return $firstStr . str_repeat("*", $strlen - 2) . $lastStr;
        }
    }
}

if(!function_exists('cleanInput')) {
    function cleanInput($data){
        // 去除字符串两边的空格
        $data = trim($data);

        // 去除反斜杠（对魔术引号进行处理）
        if (get_magic_quotes_gpc()) {
            $data = stripslashes($data);
        }

        // 转换特殊字符为HTML实体
        $data = htmlspecialchars($data, ENT_QUOTES, 'UTF-8');

        // 可选：对数据进行过滤，移除HTML标签
        // $data = strip_tags($data);

        // 可选：使用filter_var进行过滤
        // $data = filter_var($data, FILTER_SANITIZE_SPECIAL_CHARS);

        return $data;
    }
}