dnsmgr/app/common.php

<?php
// 应用公共文件
use think\facade\Db;

function get_curl($url, $post=0, $referer=0, $cookie=0, $header=0, $ua=0, $nobody=0, $addheader=0)
{
	$ch = curl_init();
	curl_setopt($ch, CURLOPT_URL, $url);
	curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
	curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
	$httpheader[] = "Accept: */*";
	$httpheader[] = "Accept-Encoding: gzip,deflate,sdch";
	$httpheader[] = "Accept-Language: zh-CN,zh;q=0.8";
	$httpheader[] = "Connection: close";
	if($addheader){
		$httpheader = array_merge($httpheader, $addheader);
	}
	curl_setopt($ch, CURLOPT_HTTPHEADER, $httpheader);
	if ($post) {
		curl_setopt($ch, CURLOPT_POST, 1);
		curl_setopt($ch, CURLOPT_POSTFIELDS, $post);
	}
	if ($header) {
		curl_setopt($ch, CURLOPT_HEADER, true);
	}
	if ($cookie) {
		curl_setopt($ch, CURLOPT_COOKIE, $cookie);
	}
	if($referer){
		curl_setopt($ch, CURLOPT_REFERER, $referer);
	}
	if ($ua) {
		curl_setopt($ch, CURLOPT_USERAGENT, $ua);
	}
	else {
		curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/5.0 (Linux; U; Android 4.0.4; es-mx; HTC_One_X Build/IMM76D) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0");
	}
	if ($nobody) {
		curl_setopt($ch, CURLOPT_NOBODY, 1);
	}
	curl_setopt($ch, CURLOPT_ENCODING, "gzip");
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
	$ret = curl_exec($ch);
	curl_close($ch);
	return $ret;
}

function real_ip($type=0){
    $ip = $_SERVER['REMOTE_ADDR'];
    if($type<=0 && isset($_SERVER['HTTP_X_FORWARDED_FOR']) && preg_match_all('#\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}#s', $_SERVER['HTTP_X_FORWARDED_FOR'], $matches)) {
        foreach ($matches[0] AS $xip) {
            if (filter_var($xip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4 | FILTER_FLAG_NO_PRIV_RANGE | FILTER_FLAG_NO_RES_RANGE)) {
                $ip = $xip;
                break;
            }
        }
    } elseif ($type<=0 && isset($_SERVER['HTTP_CLIENT_IP']) && filter_var($_SERVER['HTTP_CLIENT_IP'], FILTER_VALIDATE_IP, FILTER_FLAG_IPV4 | FILTER_FLAG_NO_PRIV_RANGE | FILTER_FLAG_NO_RES_RANGE)) {
        $ip = $_SERVER['HTTP_CLIENT_IP'];
    } elseif ($type<=1 && isset($_SERVER['HTTP_CF_CONNECTING_IP']) && filter_var($_SERVER['HTTP_CF_CONNECTING_IP'], FILTER_VALIDATE_IP, FILTER_FLAG_IPV4 | FILTER_FLAG_NO_PRIV_RANGE | FILTER_FLAG_NO_RES_RANGE)) {
        $ip = $_SERVER['HTTP_CF_CONNECTING_IP'];
    } elseif ($type<=1 && isset($_SERVER['HTTP_X_REAL_IP']) && filter_var($_SERVER['HTTP_X_REAL_IP'], FILTER_VALIDATE_IP, FILTER_FLAG_IPV4 | FILTER_FLAG_NO_PRIV_RANGE | FILTER_FLAG_NO_RES_RANGE)) {
        $ip = $_SERVER['HTTP_X_REAL_IP'];
    }
    return $ip;
}

function strexists($string, $find) {
	return !(strpos($string, $find) === FALSE);
}

function dstrpos($string, $arr) {
	if(empty($string)) return false;
	foreach((array)$arr as $v) {
		if(strpos($string, $v) !== false) {
			return true;
		}
	}
	return false;
}

function checkmobile() {
	$useragent = strtolower($_SERVER['HTTP_USER_AGENT']);
	$ualist = array('android', 'midp', 'nokia', 'mobile', 'iphone', 'ipod', 'blackberry', 'windows phone');
	if((dstrpos($useragent, $ualist) || strexists($_SERVER['HTTP_ACCEPT'], "VND.WAP") || strexists($_SERVER['HTTP_VIA'],"wap")))
		return true;
	else
		return false;
}

function authcode($string, $operation = 'DECODE', $key = '', $expiry = 0) {
	$ckey_length = 4;
	$key = md5($key);
	$keya = md5(substr($key, 0, 16));
	$keyb = md5(substr($key, 16, 16));
	$keyc = $ckey_length ? ($operation == 'DECODE' ? substr($string, 0, $ckey_length): substr(md5(microtime()), -$ckey_length)) : '';
	$cryptkey = $keya.md5($keya.$keyc);
	$key_length = strlen($cryptkey);
	$string = $operation == 'DECODE' ? base64_decode(substr($string, $ckey_length)) : sprintf('%010d', $expiry ? $expiry + time() : 0).substr(md5($string.$keyb), 0, 16).$string;
	$string_length = strlen($string);
	$result = '';
	$box = range(0, 255);
	$rndkey = array();
	for($i = 0; $i <= 255; $i++) {
		$rndkey[$i] = ord($cryptkey[$i % $key_length]);
	}
	for($j = $i = 0; $i < 256; $i++) {
		$j = ($j + $box[$i] + $rndkey[$i]) % 256;
		$tmp = $box[$i];
		$box[$i] = $box[$j];
		$box[$j] = $tmp;
	}
	for($a = $j = $i = 0; $i < $string_length; $i++) {
		$a = ($a + 1) % 256;
		$j = ($j + $box[$a]) % 256;
		$tmp = $box[$a];
		$box[$a] = $box[$j];
		$box[$j] = $tmp;
		$result .= chr(ord($string[$i]) ^ ($box[($box[$a] + $box[$j]) % 256]));
	}
	if($operation == 'DECODE') {
		if(((int)substr($result, 0, 10) == 0 || (int)substr($result, 0, 10) - time() > 0) && substr($result, 10, 16) == substr(md5(substr($result, 26).$keyb), 0, 16)) {
			return substr($result, 26);
		} else {
			return '';
		}
	} else {
		return $keyc.base64_encode($result);
	}
}

function random($length, $numeric = 0) {
	$seed = base_convert(md5(microtime().$_SERVER['DOCUMENT_ROOT']), 16, $numeric ? 10 : 35);
	$seed = $numeric ? (str_replace('0', '', $seed).'012340567890') : ($seed.'zZ'.strtoupper($seed));
	$hash = '';
	$max = strlen($seed) - 1;
	for($i = 0; $i < $length; $i++) {
		$hash .= $seed[mt_rand(0, $max)];
	}
	return $hash;
}

function checkDomain($domain){
	if(empty($domain) || !preg_match('/^[-$a-z0-9_*.]{2,512}$/i', $domain) || (stripos($domain, '.') === false) || substr($domain, -1) == '.' || substr($domain, 0 ,1) == '.' || substr($domain, 0 ,1) == '*' && substr($domain, 1 ,1) != '.' || substr_count($domain, '*')>1 || strpos($domain, '*')>0 || strlen($domain)<4) return false;
	return true;
}

function getSubstr($str, $leftStr, $rightStr)
{
	$left = strpos($str, $leftStr);
	$start = $left+strlen($leftStr);
	$right = strpos($str, $rightStr, $start);
	if($left < 0) return '';
	if($right>0){
		return substr($str, $start, $right-$start);
	}else{
		return substr($str, $start);
	}
}

function checkRefererHost(){
    if(!request()->header('referer'))return false;
    $url_arr = parse_url(request()->header('referer'));
    $http_host = request()->header('host');
    if(strpos($http_host,':'))$http_host = substr($http_host, 0, strpos($http_host, ':'));
    return $url_arr['host'] === $http_host;
}

function checkIfActive($string) {
	$array=explode(',',$string);
	$action = request()->action();
	if (in_array($action,$array)){
		return 'active';
	}else
		return null;
}

function getSid() {
    return md5(uniqid(mt_rand(), true) . microtime());
}
function getMd5Pwd($pwd, $salt=null) {
    return md5(md5($pwd) . md5('1277180438'.$salt));
}

function isNullOrEmpty($str){
	return $str === null || $str === '';
}

function checkPermission($type, $domain = null){
	$user = request()->user;
	if(empty($user)) return false;
	if($user['level'] == 2) return true;
	if($type == 1 && $user['level'] == 1 || $type == 0 && $user['level'] >= 0){
		if($domain == null) return true;
		if(in_array($domain, $user['permission'])){
			return true;
		}
	}
	return false;
}

function getAdminSkin(){
	$skin = cookie('admin_skin');
	if(empty($skin)){
		$skin = cache('admin_skin');
	}
	if(empty($skin)){
		$skin = 'skin-black-blue';
	}
	return $skin;
}