<?php
@set_time_limit(60);
$allowgz = true;
$action = $_GET['action'] ? $_GET['action'] : $_POST['action'];
$self = substr($_SERVER['PHP_SELF'],strrpos($_SERVER['PHP_SELF'],'/')+1,strlen($_SERVER['PHP_SELF']));
$refer = $_SERVER['HTTP_REFERER'];
$rarray = parse_url($refer);
$rhost = strtolower($rarray['host']);
$lhost = strtolower($_SERVER['HTTP_HOST']);
$url = $_POST['url'] ? $_POST['url'] : $_GET['url'];
$url = $url ? $url : ($_SERVER['QUERY_STRING'] ? $_SERVER['QUERY_STRING'] : NULL);
$url = trim($url);
if (!$url) exit;
$url_d = urldecode($url);
$arrUrl = @parse_url($url_d);
if ($arrUrl['scheme'] != 'http' || $arrUrl['host'] == $lhost){
header("Location: $url");
exit;
}
$ext = strtolower(substr($url,strrpos($url,'.')+1));
if (!strstr(',jpg,bmp,gif,png,',','.$ext.',')) {
header("Location: $url");
exit;
}
$url = urldecode($url);
$ret = fetchImg($url);
if ($ret['success']){
echo $ret['content'];
flush();
} else {
header($url);
}
exit;
function unTomChunked($content){
$pos = strpos($content,"\x0d\x0a");
if($pos > 0 && $pos < 20){
$content = substr($content,$pos+2);
}
$content = preg_replace("/\x0d\x0a[0-9a-z]+?\x0d\x0a/is",'',$content);
if(substr($content,-2) == "\r\n") $content = substr($content,0,strlen($content)-2);
$content = str_replace("\r\n2000\r\n",'',$content);
return $content;
}
function unGzip($content){
$singal = "\x1F\x8B\x08";
$slen = strlen($singal);
if(substr($content,0,$slen) == $singal){
$content = substr($content,10);
$content = gzinflate($content);
}
return $content;
}
function unChunked($content){
$pos = strpos($content,"\x0d\x0a");
if($pos > 0 && $pos < 20){
$content = substr($content,$pos+2);
}
$content = preg_replace("/\x0d\x0a[0-9a-f]+?\x0d\x0a/is",'',$content);
if(substr($content,-2) == "\r\n") $content = substr($content,0,strlen($content)-2);
$content = str_replace("\r\n2000\r\n",'',$content);
return $content;
}
function fetchImg($url,$nesting=false,$skipextchk=false){
global $allowgz,$allowexts,$timeout;
$allowexts = $allowexts ? ','.$allowexts.',' : ',jpg,bmp,gif,png,';
$timeout = intval($timeout);
$timeout = $timeout ? $timeout : 7;
@$arrUrl = parse_url($url);
$disallowedext = false;
$status = false;
$ext = strtolower(substr($url,strrpos($url,'.')+1));
if ($skipextchk){
$ext = 'jpg';
}
if (!strstr($allowexts,','.$ext.',')) {
$disallowedext = true;
}
if(!$disallowedext && $arrUrl['scheme'] == 'http') {
if(strstr(strtolower($arrUrl['host']),'.163.com') || strstr(strtolower($arrUrl['host']),'.piclib.net')){
$strRef = '';
}else{
$strRef = 'http://'.$arrUrl['host'].'/';
}
$arrUrl['uri'] = ($arrUrl['path'] ? $arrUrl['path']:'') . ($arrUrl['query'] ? '?'.$arrUrl['query']:'') . ($arrUrl['fragment'] ? '#'.$arrUrl['fragment']:'');
$arrUrl['port'] = $arrUrl['port'] ? $arrUrl['port'] : '80';
$strRequest = "GET ".$arrUrl['uri']." HTTP/1.0\r\n";
$strRequest .= "Host: ".$arrUrl['host']."\r\n";
$strRequest .= "Accept: */*\r\n";
if ($allowgz){
$strRequest .= "Accept-Encoding: gzip, deflate\r\n";
}
if($strRef!='') {
$strRequest .= "Referer:$strRef\r\n";
}
$strRequest .= "User-Agent: Mozilla/4.0 (compatible; MSIE 4.00; Windows 2000)\r\n";
$strRequest .= "Pragma: no-cache\r\n";
$strRequest .= "Cache-Control: no-cache\r\n";
$strRequest .= "Connection: close\r\n\r\n";
@$fp = fsockopen($arrUrl['host'],$arrUrl['port'],$intError, $strError, $timeout);
if (!$fp){
return false;
}
@fwrite($fp,$strRequest);
$bolHeader = true;
$removed = false;
while($block = fgets($fp,1024)){
if($bolHeader){
if($block=="\r\n"){
$bolHeader = false;
}
$headers .= $block;
if (!$removed && preg_match("/HTTP\/1\.\d?\s+?302\s+?.*?/is",$block)){
$removed = true;
}
} else {
break;
}
}
$content = $block;
if (!$removed){
while ($block = fread($fp,10240)) {
$content .= $block;
}
}
fclose($fp);
$status = true;
}
if((strstr($arrUrl['host'],'.tom.com') || strstr($arrUrl['host'],'.52vcd.com')) && !empty($content)){
unTomChunked($content);
$unced = true;
}
$header_t = strtolower($headers);
if((strstr($header_t,' chunked') || strstr($header_t,':chunked')) && !$unced){
$content = unChunked($content);
}
if(strstr($header_t,' gzip') || strstr($header_t,':gzip') || substr($content,0,3) == "\x1f\x8b\x08"){
$content = unGzip($content);
}
if (!$nesting && $removed){
if(preg_match("/Location:\s+?(.*?)(?=\r|\n|\s)/is",$headers,$match)){
$url = $match[1];
return fetchImg($url,true,$skipextchk);
} else {
return false;
}
}
if ($nesting){
return array('url'=>$url,'success'=>$status,'headers'=>$headers,'content'=>$content);
} else {
return array('success'=>$status,'headers'=>$headers,'content'=>$content);
}
}
?>
这个是代码
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2008-03-15 17:29:39 
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