用Socket实现HTTP协议的文件上传

Ralf_Jones 2005-12-27

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用Socket实现HTTP协议的文件上传

发布时间：2005-6-16

//====================================================
//  FileName:IBPostFile.php
//  Summary: 实现HTTP协议的文件上传
//  Author: ice_berg16(寻梦的稻草人)
//  LastModifed:2005-3-30
//  copyright(c)2005 ice_berg16@163.com
//  http://www.
//
//  ------example------
//  $pf = new IBPostFile( "http:///test.php");
//  $pf->setFile( "uploadFile", "d:/images/ice.gif" );
//  $pf->sendRequest();
//  echo $pf->getResponse();
//====================================================

class IBPostFile
{
var $url;  //要发送文件的URL
var $formData; //发送的表单数据
var $fileData; //文件数据
var $boundary; //数据分隔标识
var $response; //保存服务器返回的信息
var $username; //需要身份验证时的用户名
var $pwd;  //需要身份验证时的密码
var $port;  //端口号

var $debug = true; //是否调试

/* 函数: IBPostFile
** 功能: Constructor
** 参数: $url String 要发送文件的URL
*/
function IBPostFile( $url="", $port="80")
{
  $this->url  = $url;
  $this->port  = $port;
  $this->boundary = $this->createBoundary();
}

/* 函数: sendRequest
** 功能: 发送请求并保存结果
*/
function sendRequest()
{
  $urlArray = parse_url( $this->url );
  $fp = fsockopen( $urlArray[‘host‘], $this->port );

$requestData = $this->buildRequest();

  //*
  fwrite( $fp, $requestData );

  $content = "";
  while( !feof( $fp ) )
  {
   $content .= fread( $fp, 4096 );
  }
  fclose( $fp );
  //*/
  $this->response = $content;

  if( $this->debug )
  {
   echo "---------HTTP-REQUEST-------";
   echo "$requestData";
   echo "---------HTTP-RESPONSE------";
   echo "$content";
  }
  //*/
}

/* 函数: getResponse()
** 功能: 返回服务器端的信息
*/
function getResponse()
{
return $this->response;
}

/* 函数: setForm( $formData )
** 功能: 设置表单的字段值
** 参数: $formData Array 字段名和值的数组
*/
function setForm( $formData )
{
$this->formData = $this->buildFormData( $formData );
}

/* 函数: setFile( $name, $filePath )
** 功能: 设置要发送的文件
** 参数: $name 文件名，即file域的name
** 参数: $filePath 要发送的文件路径
*/
function setFile( $name, $filePath )
{

  $this->fileData = $this->buildFileData( $name, $filePath );
}

/* 函数: setAuthor( $user, $pwd )
** 功能: 设置身份验证时需要的用户名和密码
** 参数: $user 用户名
** 参数: $pwd 密码
*/
function setAuthor( $user, $pwd )
{
  $this->username = $user;
  $this->pwd  = $pwd;
}

/* 函数: buildRequest()
** 功能: 建立请求
*/
function buildRequest()
{
$urlArray = parse_url( $this->url );
$request = array();

  $request[] = "POST {$urlArray[‘path‘]} HTTP/1.0";
  $request[] = "Host: {$urlArray[‘host‘]}";
  $request[] = "User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)";
  $request[] = "Accept: */*";
  $request[] = "Accept-Language: zh-cn";
  $request[] = "Connection: Keep-Alive";
  $request[] = "Cache-Control: no-cache";

  //需要身份验证
  if ( !empty( $this->username ) && !empty( $this->pwd ) )
  {
         $request[] = ‘Authorization: BASIC ‘ . base64_encode( $this->username.‘:‘.$this->pwd );
    }

$request[] = "Content-Type: multipart/form-data; boundary={$this->boundary}";
$request[] = "Content-Length: " . $this->getDataLength() . "\r\n";

$requestString = join( "\r\n", $request ) . "\r\n" . $this->formData . "\r\n" . $this->fileData;

  if( $this->debug )
  {
   echo "----------- REQUEST_INFOMATION -----------";
   echo "" . $requestString . "";
  }
  return $requestString;
}

/* 函数: getDataLength()
** 功能: 返回要发送数据的长度
*/
function getDataLength()
{
  return strlen( $this->formData ) + strlen("\r\n") + strlen( $this->fileData );
}

/* 函数: buildFormData()
** 功能: 创建发送的数据格式
*/
function buildFormData( $formData )
{
  $postData = array();
  foreach( $formData as $k => $v )
  {
   $row   = array();
   $row[] = "--{$this->boundary}";
   $row[] = "Content-Disposition: form-data; name=\"$k\"\r\n";
   $row[] = "$v";

$postData[] = join( "\r\n", $row );
}

  return join( "\r\n", $postData );
}

/* 函数: buildFileData( $name, $filePath )
** 功能: 创建发送的文件格式
*/
function buildFileData( $name, $filePath )
{
  //读取文件信息
  $fname = basename( $filePath );
  $fp  = fopen ( $filePath, "r" );
  $data = fread ( $fp, filesize( $filePath ) );
  fclose ($fp);

  $postData = array();
  $postData[] = "--{$this->boundary}";
  $postData[] = "Content-Disposition: form-data; name=\"$name\"; filename=\"$fname\"\r\n";
  //$postData[] = "Content-Type: text/plain\r\n";
  $postData[] = $data;
  $postData[] = "--{$this->boundary}--";