search
Homephp教程php手册用php实现proxy功能的示范 [已升级至v0.0.2]

刚刚写的练手的作品。感觉还是有些实用价值的。。放出来给大家试试。
功能:通过php实现代理功能
适用用户:在家下载较慢。且懒得找proxy。且有高速主机,且主机有php,且主机支持socket。
使用方法:
1。把本程序传到主机上
2。通过浏览器浏览主机上的此文件
3。在url中填入欲下载的文件地址(如果有必要,可以填入referer)
4。点击get proxy url
5。新打开的页面中的链接即为通过proxy下载的链接

注意:
1。支持多线程下载,断点续传
2。仅支持http协议
3。不支持服务器端header重定向
4。不支持http auth
5。下载较大的文件时,可以修改程序中set_time_limit的值,以减少断线的现象(默认为180,即3分钟)


PHP代码:--------------------------------------------------------------------------------

/***************************************/
/* */
/* Php Http Proxy */
/* version: 0.0.2 */
/* last modify: 2005.1.12 */
/* author: q3boy */
/* */
/***************************************/
set_time_limit(180);

define('PP_ERROR_CODE',1);
define('PP_ERROR_MESSAGE',2);
define('PP_ERROR_ALL',3);
define('PP_RETURN_STRING',1);
define('PP_RETURN_ARRAY',2);
define('PP_RETURN_ALL',3);

class CPhpProxy {

var $_strUrl;
var $_arrArgv;
var $_strRef;
var $_arrUrl;
var $_resSocket;
var $_intError;
var $_strError;
var $_arrDefaultArrayUrl;
var $_arrDefaultPort;

function CPhpProxy($strUrl = null, $arrArgv = array()) {
$this->init();
is_null($strUrl)?'':$this->setUrl($strUrl);
is_null($arrArgv['refer'])?'':$this->setRef($arrArgv['refer']);
$this->proxy($strUrl,$arrArgv);
}
function setError($intError,$mixArgv=null) {
$this->_intError = $intError;
if($intError==1001) {
$this->_strError = "调用 $mixArgv 方法时参数传递出错, 枚举值不存在";
}elseif($intError==1) {
$this->_strError = "url 错误, url 格式不正确.\n".$mixArgvs;
}elseif($intError == 2) {
$this->_strError = "url 错误, 目前尚未支持此协议.\n".$mixArgvs;
}elseif($intError == 3) {
$this->_strError = "无法打开 ".$this->_arrUrl['host'].':'.$this->_arrUrl['port']."\n".$mixArgv[0].': '.$mixArgv[1];
}

Return false;
}

function getError($enumReturnType=PP_ERROR_CODE) {
if($enumReturnType==PP_ERROR_ALL) {
Return array(str_pad($this->_intError,5,'0',STR_PAD_LEFT),$this->_strError);
}elseif($enumReturnType==PP_ERROR_MESSAGE) {
Return $this->_strError;
}elseif($enumReturnType==PP_ERROR_CODE) {
Return $this->_intError;
}else {
Return false;
}
}

function init() {
$this->_strUrl = null;
$this->_arrArgv = array();
$this->_strRef = null;
$this->_arrUrl = array();
$this->_resSocket = null;
$this->_intError = 0;
$this->_strError = 'there is no error';
//arrurl 默认值
$this->_arrDefaultArrayUrl = array('protocol'=>'http','file'=>'index.htm');
//默认端口
$this->_arrDefaultPort =array('http'=>'80');
Return true;
}
function setUrl($strUrl) {
$strUrl = trim($strUrl);
//正则
$reg = "/^(([\w]+):\/\/)?([^:|\/|@]*:)?([^:|\/|@]*@)?([\w|\-|\.]+)(:\d+)?(\/[^\?|#]*)?(\?[^#]*)?(#.*)?$/is";
if(!preg_match($reg,$strUrl,$arrUrl)) {
Return $this->setError(1,$strUrl);
}else {
//拆解匹配数组
list($tmp, $tmp, $arr['protocol'], $arr['user'], $arr['pass'], $arr['host'], $arr['port'], $arr['path'], $arr['query'], $arr['anchor']) = $arrUrl;
//默认协议
if(!$arr['protocol']) {
$arrUrl[1] = $this->_arrDefaultArrayUrl['protocol'].'://';
}
//设 filename
$arr['file'] = basename($arr['path']);
//默认值
foreach($this->_arrDefaultArrayUrl as $key=>$val) {
if($arr[$key] == '') {
$arr[$key] = $val;
}
}
//默认端口
if(is_null($this->_arrDefaultPort[$arr['protocol']])) {
Return $this->setError(2,$arr['protocol']);
}elseif(!$arr['port']) {
$arr['port'] = $this->_arrDefaultPort[$arr['protocol']];
}

//设 uri
$arr['uri'] = ($arr['path']?$arr['path']:'/') . ($arr['query']?'?'.$arr['query']:'') . ($arr['anchor']?'#'.$arr['anchor']:'');
//设 url
unset($arrUrl[0]);
unset($arrUrl[2]);
$this->_strUrl = implode('',$arrUrl);
//设 arrurl
$this->_arrUrl = $arr;
Return true;
}
}
function getUrl($enumReturnType = PP_RETURN_ARRAY) {
if($enumReturnType==PP_RETURN_STRING) {
Return $this->_strUrl;
}elseif($enumReturnType==PP_RETURN_ARRAY) {
Return $this->_arrUrl;
}if($enumReturnType==PP_RETURN_ALL) {
Return array($this->_strUrl,$this->_arrUrl);
}else {
Return $this->setError(1001);
}

}
function setRefer($strRef) {
$this->_strRef = trim($strRef);
Return true;
}
function getRefer() {
Return $this->_strRef;
}

function getProxyUrl() {
global $_SERVER;
list($strProcotol) = explode('/',strtolower(trim($_SERVER['SERVER_PROTOCOL'])));
$str = $strProcotol.'://'.$_SERVER['HTTP_HOST'].$_SERVER['PHP_SELF'].
'?u='.urlencode($this->getUrl(PP_RETURN_STRING)).
($this->getRefer()?('&r='.urlencode($this->getRefer())):'');
Return $str;
}
function openSocket() {
$arr = $this->getUrl();
$this->_resSocket = @fsockopen($arr['host'],$arr['port'],$intError, $strError, 30);
if(!$this->_resSocket) {
$this->_resSocket = null;
Return $this->setError(3,array($intError, $strError));
}else {
Return true;
}
}
function getRequest() {
Return $this->{'get'.ucfirst($this->_arrUrl['protocol']).'Request'}();
}
function sendRequest() {
Return fwrite($this->_resSocket,$this->getRequest());
}
function flushResponse() {
Return $this->{'flush'.ucfirst($this->_arrUrl['protocol']).'Response'}();
}
function getHttpRequest() {
$arr = $this->getUrl();
$arrRequest = getallheaders();
$arrRequest['Host'] = $arr['host'];
$strRequest = "GET ".$arr['uri']." HTTP/1.1\r\n";
foreach($arrRequest as $key=>$val) {
$strRequest .="$key: $val\r\n";
}
$strRequest .="\r\n";
Return $strRequest;
}
function flushHttpResponse() {
$bolHeader=true;
while (!feof($this->_resSocket)) {
$str = fgets($this->_resSocket, 4096);
if($bolHeader) {
@header($str);
}else {
echo($str);
}
if($bolHeader && $str=="\r\n") {
$bolHeader=false;
@header("Content-type: application/gzip");
@header('Content-Disposition: attachment; filename="'.$this->_arrUrl['file'].'"');
}
}
Return true;
}
function close() {
fclose($this->_resSocket);
$this->_resSocket = null;
Return true;
}
function proxy($strUrl = null,$arrArgv = array()) {
if(!is_null($this->getUrl(PP_RETURN_STRING)) && $this->openSocket() && $this->sendRequest() && $this->flushResponse()) {
echo(123);
$this->close();
}else {
Return false;
}
}
}
if(sizeof($_GET)) {
$strGetArrayName = '_GET';
}elseif(sizeof($HTTP_GET_VARS)) {
$strGetArrayName = 'HTTP_GET_VARS';
}else {
die('



PhpProxy



















PhpProxy
URL:
REFERER:





');
}
$strUrl = trim(${$strGetArrayName}['u']);
if($strUrl=='') {
die('请输入 url 地址.');
}
//get referer
$strRefTmp = trim(${$strGetArrayName}['r']);
//初始化 proxy 类
$objProxy = new CPhpProxy();
//设置 url 和 refer
$objProxy->setUrl($strUrl);
$objProxy->setRefer($strRef);
//错误输出
if($objProxy->getError()) {
die($objProxy->getError(PP_ERROR_MESSAGE));
}

//echo url for download
if(${$strGetArrayName}['act']=='make') {
die("

点击此处通过 PhpProxy 下载文件

");
}
//取文件
$objProxy->proxy();
//错误处理
if($objProxy->getError()) {
die($objProxy->getError(PP_ERROR_MESSAGE));
}
?>




Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

SecLists

SecLists

SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.

SublimeText3 English version

SublimeText3 English version

Recommended: Win version, supports code prompts!

Safe Exam Browser

Safe Exam Browser

Safe Exam Browser is a secure browser environment for taking online exams securely. This software turns any computer into a secure workstation. It controls access to any utility and prevents students from using unauthorized resources.

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

Atom editor mac version download

Atom editor mac version download

The most popular open source editor