900 lines
27 KiB
PHP
900 lines
27 KiB
PHP
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<?php
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/*************************************************
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Snoopy - the PHP net client
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Author: Monte Ohrt <monte@ispi.net>
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Copyright (c): 1999-2000 ispi, all rights reserved
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Version: 1.0
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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You may contact the author of Snoopy by e-mail at:
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monte@ispi.net
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Or, write to:
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Monte Ohrt
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CTO, ispi
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237 S. 70th suite 220
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Lincoln, NE 68510
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The latest version of Snoopy can be obtained from:
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http://snoopy.sourceforge.com
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*************************************************/
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class Snoopy
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{
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/**** Public variables ****/
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/* user definable vars */
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var $host = "www.php.net"; // host name we are connecting to
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var $port = 80; // port we are connecting to
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var $proxy_host = ""; // proxy host to use
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var $proxy_port = ""; // proxy port to use
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var $agent = "Snoopy v1.0"; // agent we masquerade as
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var $referer = ""; // referer info to pass
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var $cookies = array(); // array of cookies to pass
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// $cookies["username"]="joe";
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var $rawheaders = array(); // array of raw headers to send
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// $rawheaders["Content-type"]="text/html";
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var $maxredirs = 5; // http redirection depth maximum. 0 = disallow
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var $lastredirectaddr = ""; // contains address of last redirected address
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var $offsiteok = true; // allows redirection off-site
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var $maxframes = 0; // frame content depth maximum. 0 = disallow
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var $expandlinks = true; // expand links to fully qualified URLs.
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// this only applies to fetchlinks()
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// or submitlinks()
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var $passcookies = true; // pass set cookies back through redirects
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// NOTE: this currently does not respect
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// dates, domains or paths.
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var $user = ""; // user for http authentication
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var $pass = ""; // password for http authentication
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// http accept types
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var $accept = "image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, */*";
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var $results = ""; // where the content is put
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var $error = ""; // error messages sent here
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var $response_code = ""; // response code returned from server
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var $headers = array(); // headers returned from server sent here
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var $maxlength = 500000; // max return data length (body)
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var $read_timeout = 0; // timeout on read operations, in seconds
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// supported only since PHP 4 Beta 4
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// set to 0 to disallow timeouts
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var $timed_out = false; // if a read operation timed out
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var $status = 0; // http request status
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var $curl_path = "/usr/bin/curl";
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// Snoopy will use cURL for fetching
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// SSL content if a full system path to
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// the cURL binary is supplied here.
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// set to false if you do not have
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// cURL installed. See http://curl.haxx.se
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// for details on installing cURL.
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// Snoopy does *not* use the cURL
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// library functions built into php,
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// as these functions are not stable
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// as of this Snoopy release.
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// send Accept-encoding: gzip?
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var $use_gzip = true;
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/**** Private variables ****/
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var $_maxlinelen = 4096; // max line length (headers)
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var $_httpmethod = "GET"; // default http request method
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var $_httpversion = "HTTP/1.0"; // default http request version
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var $_submit_method = "POST"; // default submit method
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var $_submit_type = "application/x-www-form-urlencoded"; // default submit type
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var $_mime_boundary = ""; // MIME boundary for multipart/form-data submit type
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var $_redirectaddr = false; // will be set if page fetched is a redirect
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var $_redirectdepth = 0; // increments on an http redirect
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var $_frameurls = array(); // frame src urls
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var $_framedepth = 0; // increments on frame depth
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var $_isproxy = false; // set if using a proxy server
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var $_fp_timeout = 30; // timeout for socket connection
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/*======================================================================*\
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Function: fetch
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Purpose: fetch the contents of a web page
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(and possibly other protocols in the
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future like ftp, nntp, gopher, etc.)
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Input: $URI the location of the page to fetch
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Output: $this->results the output text from the fetch
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\*======================================================================*/
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function fetch($URI)
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{
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//preg_match("|^([^:]+)://([^:/]+)(:[\d]+)*(.*)|",$URI,$URI_PARTS);
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$URI_PARTS = parse_url($URI);
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if (!empty($URI_PARTS["user"]))
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$this->user = $URI_PARTS["user"];
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if (!empty($URI_PARTS["pass"]))
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$this->pass = $URI_PARTS["pass"];
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switch($URI_PARTS["scheme"])
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{
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case "http":
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$this->host = $URI_PARTS["host"];
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if(!empty($URI_PARTS["port"]))
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$this->port = $URI_PARTS["port"];
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if($this->_connect($fp))
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{
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if($this->_isproxy)
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{
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// using proxy, send entire URI
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$this->_httprequest($URI,$fp,$URI,$this->_httpmethod);
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}
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else
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{
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$path = $URI_PARTS["path"].(isset($URI_PARTS["query"]) ? "?".$URI_PARTS["query"] : "");
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// no proxy, send only the path
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$this->_httprequest($path, $fp, $URI, $this->_httpmethod);
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}
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$this->_disconnect($fp);
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if($this->_redirectaddr)
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{
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/* url was redirected, check if we've hit the max depth */
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if($this->maxredirs > $this->_redirectdepth)
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{
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// only follow redirect if it's on this site, or offsiteok is true
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if(preg_match("|^http://".preg_quote($this->host)."|i",$this->_redirectaddr) || $this->offsiteok)
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{
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/* follow the redirect */
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$this->_redirectdepth++;
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$this->lastredirectaddr=$this->_redirectaddr;
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$this->fetch($this->_redirectaddr);
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}
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}
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}
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if($this->_framedepth < $this->maxframes && count($this->_frameurls) > 0)
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{
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$frameurls = $this->_frameurls;
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$this->_frameurls = array();
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while(list(,$frameurl) = each($frameurls))
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{
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if($this->_framedepth < $this->maxframes)
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{
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$this->fetch($frameurl);
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$this->_framedepth++;
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}
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else
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break;
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}
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}
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}
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else
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{
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return false;
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}
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return true;
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break;
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case "https":
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if(!$this->curl_path || (!is_executable($this->curl_path))) {
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$this->error = "Bad curl ($this->curl_path), can't fetch HTTPS \n";
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return false;
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}
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$this->host = $URI_PARTS["host"];
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if(!empty($URI_PARTS["port"]))
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$this->port = $URI_PARTS["port"];
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if($this->_isproxy)
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{
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// using proxy, send entire URI
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$this->_httpsrequest($URI,$URI,$this->_httpmethod);
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}
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else
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{
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$path = $URI_PARTS["path"].($URI_PARTS["query"] ? "?".$URI_PARTS["query"] : "");
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// no proxy, send only the path
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$this->_httpsrequest($path, $URI, $this->_httpmethod);
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}
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if($this->_redirectaddr)
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{
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/* url was redirected, check if we've hit the max depth */
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if($this->maxredirs > $this->_redirectdepth)
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{
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// only follow redirect if it's on this site, or offsiteok is true
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if(preg_match("|^http://".preg_quote($this->host)."|i",$this->_redirectaddr) || $this->offsiteok)
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{
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/* follow the redirect */
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$this->_redirectdepth++;
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$this->lastredirectaddr=$this->_redirectaddr;
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$this->fetch($this->_redirectaddr);
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}
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}
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}
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if($this->_framedepth < $this->maxframes && count($this->_frameurls) > 0)
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{
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$frameurls = $this->_frameurls;
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$this->_frameurls = array();
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while(list(,$frameurl) = each($frameurls))
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{
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if($this->_framedepth < $this->maxframes)
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{
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$this->fetch($frameurl);
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$this->_framedepth++;
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}
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else
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break;
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}
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}
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return true;
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break;
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default:
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// not a valid protocol
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$this->error = 'Invalid protocol "'.$URI_PARTS["scheme"].'"\n';
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return false;
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break;
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}
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return true;
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}
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/*======================================================================*\
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Private functions
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\*======================================================================*/
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/*======================================================================*\
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Function: _striplinks
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Purpose: strip the hyperlinks from an html document
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Input: $document document to strip.
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Output: $match an array of the links
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\*======================================================================*/
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function _striplinks($document)
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{
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preg_match_all("'<\s*a\s+.*href\s*=\s* # find <a href=
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([\"\'])? # find single or double quote
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(?(1) (.*?)\\1 | ([^\s\>]+)) # if quote found, match up to next matching
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# quote, otherwise match up to next space
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'isx",$document,$links);
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// catenate the non-empty matches from the conditional subpattern
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while(list($key,$val) = each($links[2]))
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{
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if(!empty($val))
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$match[] = $val;
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}
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while(list($key,$val) = each($links[3]))
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{
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if(!empty($val))
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$match[] = $val;
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}
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// return the links
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return $match;
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}
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/*======================================================================*\
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Function: _stripform
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Purpose: strip the form elements from an html document
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Input: $document document to strip.
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Output: $match an array of the links
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\*======================================================================*/
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function _stripform($document)
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{
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preg_match_all("'<\/?(FORM|INPUT|SELECT|TEXTAREA|(OPTION))[^<>]*>(?(2)(.*(?=<\/?(option|select)[^<>]*>[\r\n]*)|(?=[\r\n]*))|(?=[\r\n]*))'Usi",$document,$elements);
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// catenate the matches
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$match = implode("\r\n",$elements[0]);
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// return the links
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return $match;
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}
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/*======================================================================*\
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Function: _striptext
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Purpose: strip the text from an html document
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Input: $document document to strip.
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Output: $text the resulting text
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\*======================================================================*/
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function _striptext($document)
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{
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// I didn't use preg eval (//e) since that is only available in PHP 4.0.
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// so, list your entities one by one here. I included some of the
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// more common ones.
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$search = array("'<script[^>]*?>.*?</script>'si", // strip out javascript
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"'<[\/\!]*?[^<>]*?>'si", // strip out html tags
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"'([\r\n])[\s]+'", // strip out white space
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"'&(quote|#34);'i", // replace html entities
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"'&(amp|#38);'i",
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"'&(lt|#60);'i",
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"'&(gt|#62);'i",
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"'&(nbsp|#160);'i",
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"'&(iexcl|#161);'i",
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"'&(cent|#162);'i",
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"'&(pound|#163);'i",
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"'&(copy|#169);'i"
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);
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$replace = array( "",
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"",
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"\\1",
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"\"",
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"&",
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"<",
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">",
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" ",
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chr(161),
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chr(162),
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chr(163),
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chr(169));
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$text = preg_replace($search,$replace,$document);
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return $text;
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}
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/*======================================================================*\
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Function: _expandlinks
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Purpose: expand each link into a fully qualified URL
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Input: $links the links to qualify
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$URI the full URI to get the base from
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Output: $expandedLinks the expanded links
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\*======================================================================*/
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function _expandlinks($links,$URI)
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{
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preg_match("/^[^\?]+/",$URI,$match);
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$match = preg_replace("|/[^\/\.]+\.[^\/\.]+$|","",$match[0]);
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$search = array( "|^http://".preg_quote($this->host)."|i",
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"|^(?!http://)(\/)?(?!mailto:)|i",
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"|/\./|",
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||
|
|
"|/[^\/]+/\.\./|"
|
||
|
|
);
|
||
|
|
|
||
|
|
$replace = array( "",
|
||
|
|
$match."/",
|
||
|
|
"/",
|
||
|
|
"/"
|
||
|
|
);
|
||
|
|
|
||
|
|
$expandedLinks = preg_replace($search,$replace,$links);
|
||
|
|
|
||
|
|
return $expandedLinks;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*======================================================================*\
|
||
|
|
Function: _httprequest
|
||
|
|
Purpose: go get the http data from the server
|
||
|
|
Input: $url the url to fetch
|
||
|
|
$fp the current open file pointer
|
||
|
|
$URI the full URI
|
||
|
|
$body body contents to send if any (POST)
|
||
|
|
Output:
|
||
|
|
\*======================================================================*/
|
||
|
|
|
||
|
|
function _httprequest($url,$fp,$URI,$http_method,$content_type="",$body="")
|
||
|
|
{
|
||
|
|
if($this->passcookies && $this->_redirectaddr)
|
||
|
|
$this->setcookies();
|
||
|
|
|
||
|
|
$URI_PARTS = parse_url($URI);
|
||
|
|
if(empty($url))
|
||
|
|
$url = "/";
|
||
|
|
$headers = $http_method." ".$url." ".$this->_httpversion."\r\n";
|
||
|
|
if(!empty($this->agent))
|
||
|
|
$headers .= "User-Agent: ".$this->agent."\r\n";
|
||
|
|
if(!empty($this->host) && !isset($this->rawheaders['Host']))
|
||
|
|
$headers .= "Host: ".$this->host."\r\n";
|
||
|
|
if(!empty($this->accept))
|
||
|
|
$headers .= "Accept: ".$this->accept."\r\n";
|
||
|
|
|
||
|
|
if($this->use_gzip) {
|
||
|
|
// make sure PHP was built with --with-zlib
|
||
|
|
// and we can handle gzipp'ed data
|
||
|
|
if ( function_exists(gzinflate) ) {
|
||
|
|
$headers .= "Accept-encoding: gzip\r\n";
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
trigger_error(
|
||
|
|
"use_gzip is on, but PHP was built without zlib support.".
|
||
|
|
" Requesting file(s) without gzip encoding.",
|
||
|
|
E_USER_NOTICE);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if(!empty($this->referer))
|
||
|
|
$headers .= "Referer: ".$this->referer."\r\n";
|
||
|
|
if(!empty($this->cookies))
|
||
|
|
{
|
||
|
|
if(!is_array($this->cookies))
|
||
|
|
$this->cookies = (array)$this->cookies;
|
||
|
|
|
||
|
|
reset($this->cookies);
|
||
|
|
if ( count($this->cookies) > 0 ) {
|
||
|
|
$cookie_headers .= 'Cookie: ';
|
||
|
|
foreach ( $this->cookies as $cookieKey => $cookieVal ) {
|
||
|
|
$cookie_headers .= $cookieKey."=".urlencode($cookieVal)."; ";
|
||
|
|
}
|
||
|
|
$headers .= substr($cookie_headers,0,-2) . "\r\n";
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if(!empty($this->rawheaders))
|
||
|
|
{
|
||
|
|
if(!is_array($this->rawheaders))
|
||
|
|
$this->rawheaders = (array)$this->rawheaders;
|
||
|
|
while(list($headerKey,$headerVal) = each($this->rawheaders))
|
||
|
|
$headers .= $headerKey.": ".$headerVal."\r\n";
|
||
|
|
}
|
||
|
|
if(!empty($content_type)) {
|
||
|
|
$headers .= "Content-type: $content_type";
|
||
|
|
if ($content_type == "multipart/form-data")
|
||
|
|
$headers .= "; boundary=".$this->_mime_boundary;
|
||
|
|
$headers .= "\r\n";
|
||
|
|
}
|
||
|
|
if(!empty($body))
|
||
|
|
$headers .= "Content-length: ".strlen($body)."\r\n";
|
||
|
|
if(!empty($this->user) || !empty($this->pass))
|
||
|
|
$headers .= "Authorization: BASIC ".base64_encode($this->user.":".$this->pass)."\r\n";
|
||
|
|
|
||
|
|
$headers .= "\r\n";
|
||
|
|
|
||
|
|
// set the read timeout if needed
|
||
|
|
if ($this->read_timeout > 0)
|
||
|
|
socket_set_timeout($fp, $this->read_timeout);
|
||
|
|
$this->timed_out = false;
|
||
|
|
|
||
|
|
fwrite($fp,$headers.$body,strlen($headers.$body));
|
||
|
|
|
||
|
|
$this->_redirectaddr = false;
|
||
|
|
unset($this->headers);
|
||
|
|
|
||
|
|
// content was returned gzip encoded?
|
||
|
|
$is_gzipped = false;
|
||
|
|
|
||
|
|
while($currentHeader = fgets($fp,$this->_maxlinelen))
|
||
|
|
{
|
||
|
|
if ($this->read_timeout > 0 && $this->_check_timeout($fp))
|
||
|
|
{
|
||
|
|
$this->status=-100;
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
// if($currentHeader == "\r\n")
|
||
|
|
if(preg_match("/^\r?\n$/", $currentHeader) )
|
||
|
|
break;
|
||
|
|
|
||
|
|
// if a header begins with Location: or URI:, set the redirect
|
||
|
|
if(preg_match("/^(Location:|URI:)/i",$currentHeader))
|
||
|
|
{
|
||
|
|
// get URL portion of the redirect
|
||
|
|
preg_match("/^(Location:|URI:)\s+(.*)/",chop($currentHeader),$matches);
|
||
|
|
// look for :// in the Location header to see if hostname is included
|
||
|
|
if(!preg_match("|\:\/\/|",$matches[2]))
|
||
|
|
{
|
||
|
|
// no host in the path, so prepend
|
||
|
|
$this->_redirectaddr = $URI_PARTS["scheme"]."://".$this->host.":".$this->port;
|
||
|
|
// eliminate double slash
|
||
|
|
if(!preg_match("|^/|",$matches[2]))
|
||
|
|
$this->_redirectaddr .= "/".$matches[2];
|
||
|
|
else
|
||
|
|
$this->_redirectaddr .= $matches[2];
|
||
|
|
}
|
||
|
|
else
|
||
|
|
$this->_redirectaddr = $matches[2];
|
||
|
|
}
|
||
|
|
|
||
|
|
if(preg_match("|^HTTP/|",$currentHeader))
|
||
|
|
{
|
||
|
|
if(preg_match("|^HTTP/[^\s]*\s(.*?)\s|",$currentHeader, $status))
|
||
|
|
{
|
||
|
|
$this->status= $status[1];
|
||
|
|
}
|
||
|
|
$this->response_code = $currentHeader;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (preg_match("/Content-Encoding: gzip/", $currentHeader) ) {
|
||
|
|
$is_gzipped = true;
|
||
|
|
}
|
||
|
|
|
||
|
|
$this->headers[] = $currentHeader;
|
||
|
|
}
|
||
|
|
|
||
|
|
# $results = fread($fp, $this->maxlength);
|
||
|
|
$results = "";
|
||
|
|
while ( $data = fread($fp, $this->maxlength) ) {
|
||
|
|
$results .= $data;
|
||
|
|
if (
|
||
|
|
strlen($results) > $this->maxlength ) {
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// gunzip
|
||
|
|
if ( $is_gzipped ) {
|
||
|
|
// per http://www.php.net/manual/en/function.gzencode.php
|
||
|
|
$results = substr($results, 10);
|
||
|
|
$results = gzinflate($results);
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($this->read_timeout > 0 && $this->_check_timeout($fp))
|
||
|
|
{
|
||
|
|
$this->status=-100;
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
// check if there is a a redirect meta tag
|
||
|
|
|
||
|
|
if(preg_match("'<meta[\s]*http-equiv[^>]*?content[\s]*=[\s]*[\"\']?\d+;[\s]+URL[\s]*=[\s]*([^\"\']*?)[\"\']?>'i",$results,$match))
|
||
|
|
{
|
||
|
|
$this->_redirectaddr = $this->_expandlinks($match[1],$URI);
|
||
|
|
}
|
||
|
|
|
||
|
|
// have we hit our frame depth and is there frame src to fetch?
|
||
|
|
if(($this->_framedepth < $this->maxframes) && preg_match_all("'<frame\s+.*src[\s]*=[\'\"]?([^\'\"\>]+)'i",$results,$match))
|
||
|
|
{
|
||
|
|
$this->results[] = $results;
|
||
|
|
for($x=0; $x<count($match[1]); $x++)
|
||
|
|
$this->_frameurls[] = $this->_expandlinks($match[1][$x],$URI_PARTS["scheme"]."://".$this->host);
|
||
|
|
}
|
||
|
|
// have we already fetched framed content?
|
||
|
|
elseif(is_array($this->results))
|
||
|
|
$this->results[] = $results;
|
||
|
|
// no framed content
|
||
|
|
else
|
||
|
|
$this->results = $results;
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*======================================================================*\
|
||
|
|
Function: _httpsrequest
|
||
|
|
Purpose: go get the https data from the server using curl
|
||
|
|
Input: $url the url to fetch
|
||
|
|
$URI the full URI
|
||
|
|
$body body contents to send if any (POST)
|
||
|
|
Output:
|
||
|
|
\*======================================================================*/
|
||
|
|
|
||
|
|
function _httpsrequest($url,$URI,$http_method,$content_type="",$body="")
|
||
|
|
{
|
||
|
|
if($this->passcookies && $this->_redirectaddr)
|
||
|
|
$this->setcookies();
|
||
|
|
|
||
|
|
$headers = array();
|
||
|
|
|
||
|
|
$URI_PARTS = parse_url($URI);
|
||
|
|
if(empty($url))
|
||
|
|
$url = "/";
|
||
|
|
// GET ... header not needed for curl
|
||
|
|
//$headers[] = $http_method." ".$url." ".$this->_httpversion;
|
||
|
|
if(!empty($this->agent))
|
||
|
|
$headers[] = "User-Agent: ".$this->agent;
|
||
|
|
if(!empty($this->host))
|
||
|
|
$headers[] = "Host: ".$this->host;
|
||
|
|
if(!empty($this->accept))
|
||
|
|
$headers[] = "Accept: ".$this->accept;
|
||
|
|
if(!empty($this->referer))
|
||
|
|
$headers[] = "Referer: ".$this->referer;
|
||
|
|
if(!empty($this->cookies))
|
||
|
|
{
|
||
|
|
if(!is_array($this->cookies))
|
||
|
|
$this->cookies = (array)$this->cookies;
|
||
|
|
|
||
|
|
reset($this->cookies);
|
||
|
|
if ( count($this->cookies) > 0 ) {
|
||
|
|
$cookie_str = 'Cookie: ';
|
||
|
|
foreach ( $this->cookies as $cookieKey => $cookieVal ) {
|
||
|
|
$cookie_str .= $cookieKey."=".urlencode($cookieVal)."; ";
|
||
|
|
}
|
||
|
|
$headers[] = substr($cookie_str,0,-2);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if(!empty($this->rawheaders))
|
||
|
|
{
|
||
|
|
if(!is_array($this->rawheaders))
|
||
|
|
$this->rawheaders = (array)$this->rawheaders;
|
||
|
|
while(list($headerKey,$headerVal) = each($this->rawheaders))
|
||
|
|
$headers[] = $headerKey.": ".$headerVal;
|
||
|
|
}
|
||
|
|
if(!empty($content_type)) {
|
||
|
|
if ($content_type == "multipart/form-data")
|
||
|
|
$headers[] = "Content-type: $content_type; boundary=".$this->_mime_boundary;
|
||
|
|
else
|
||
|
|
$headers[] = "Content-type: $content_type";
|
||
|
|
}
|
||
|
|
if(!empty($body))
|
||
|
|
$headers[] = "Content-length: ".strlen($body);
|
||
|
|
if(!empty($this->user) || !empty($this->pass))
|
||
|
|
$headers[] = "Authorization: BASIC ".base64_encode($this->user.":".$this->pass);
|
||
|
|
|
||
|
|
for($curr_header = 0; $curr_header < count($headers); $curr_header++)
|
||
|
|
$cmdline_params .= " -H \"".$headers[$curr_header]."\"";
|
||
|
|
|
||
|
|
if(!empty($body))
|
||
|
|
$cmdline_params .= " -d \"$body\"";
|
||
|
|
|
||
|
|
if($this->read_timeout > 0)
|
||
|
|
$cmdline_params .= " -m ".$this->read_timeout;
|
||
|
|
|
||
|
|
$headerfile = uniqid(time());
|
||
|
|
|
||
|
|
# accept self-signed certs
|
||
|
|
$cmdline_params .= " -k";
|
||
|
|
exec($this->curl_path." -D \"/tmp/$headerfile\"".$cmdline_params." ".$URI,$results,$return);
|
||
|
|
|
||
|
|
if($return)
|
||
|
|
{
|
||
|
|
$this->error = "Error: cURL could not retrieve the document, error $return.";
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
$results = implode("\r\n",$results);
|
||
|
|
|
||
|
|
$result_headers = file("/tmp/$headerfile");
|
||
|
|
|
||
|
|
$this->_redirectaddr = false;
|
||
|
|
unset($this->headers);
|
||
|
|
|
||
|
|
for($currentHeader = 0; $currentHeader < count($result_headers); $currentHeader++)
|
||
|
|
{
|
||
|
|
|
||
|
|
// if a header begins with Location: or URI:, set the redirect
|
||
|
|
if(preg_match("/^(Location: |URI: )/i",$result_headers[$currentHeader]))
|
||
|
|
{
|
||
|
|
// get URL portion of the redirect
|
||
|
|
preg_match("/^(Location: |URI:)(.*)/",chop($result_headers[$currentHeader]),$matches);
|
||
|
|
// look for :// in the Location header to see if hostname is included
|
||
|
|
if(!preg_match("|\:\/\/|",$matches[2]))
|
||
|
|
{
|
||
|
|
// no host in the path, so prepend
|
||
|
|
$this->_redirectaddr = $URI_PARTS["scheme"]."://".$this->host.":".$this->port;
|
||
|
|
// eliminate double slash
|
||
|
|
if(!preg_match("|^/|",$matches[2]))
|
||
|
|
$this->_redirectaddr .= "/".$matches[2];
|
||
|
|
else
|
||
|
|
$this->_redirectaddr .= $matches[2];
|
||
|
|
}
|
||
|
|
else
|
||
|
|
$this->_redirectaddr = $matches[2];
|
||
|
|
}
|
||
|
|
|
||
|
|
if(preg_match("|^HTTP/|",$result_headers[$currentHeader]))
|
||
|
|
{
|
||
|
|
$this->response_code = $result_headers[$currentHeader];
|
||
|
|
if(preg_match("|^HTTP/[^\s]*\s(.*?)\s|",$this->response_code, $match))
|
||
|
|
{
|
||
|
|
$this->status= $match[1];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
$this->headers[] = $result_headers[$currentHeader];
|
||
|
|
}
|
||
|
|
|
||
|
|
// check if there is a a redirect meta tag
|
||
|
|
|
||
|
|
if(preg_match("'<meta[\s]*http-equiv[^>]*?content[\s]*=[\s]*[\"\']?\d+;[\s]+URL[\s]*=[\s]*([^\"\']*?)[\"\']?>'i",$results,$match))
|
||
|
|
{
|
||
|
|
$this->_redirectaddr = $this->_expandlinks($match[1],$URI);
|
||
|
|
}
|
||
|
|
|
||
|
|
// have we hit our frame depth and is there frame src to fetch?
|
||
|
|
if(($this->_framedepth < $this->maxframes) && preg_match_all("'<frame\s+.*src[\s]*=[\'\"]?([^\'\"\>]+)'i",$results,$match))
|
||
|
|
{
|
||
|
|
$this->results[] = $results;
|
||
|
|
for($x=0; $x<count($match[1]); $x++)
|
||
|
|
$this->_frameurls[] = $this->_expandlinks($match[1][$x],$URI_PARTS["scheme"]."://".$this->host);
|
||
|
|
}
|
||
|
|
// have we already fetched framed content?
|
||
|
|
elseif(is_array($this->results))
|
||
|
|
$this->results[] = $results;
|
||
|
|
// no framed content
|
||
|
|
else
|
||
|
|
$this->results = $results;
|
||
|
|
|
||
|
|
unlink("/tmp/$headerfile");
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*======================================================================*\
|
||
|
|
Function: setcookies()
|
||
|
|
Purpose: set cookies for a redirection
|
||
|
|
\*======================================================================*/
|
||
|
|
|
||
|
|
function setcookies()
|
||
|
|
{
|
||
|
|
for($x=0; $x<count($this->headers); $x++)
|
||
|
|
{
|
||
|
|
if(preg_match("/^set-cookie:[\s]+([^=]+)=([^;]+)/i", $this->headers[$x],$match))
|
||
|
|
$this->cookies[$match[1]] = $match[2];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*======================================================================*\
|
||
|
|
Function: _check_timeout
|
||
|
|
Purpose: checks whether timeout has occurred
|
||
|
|
Input: $fp file pointer
|
||
|
|
\*======================================================================*/
|
||
|
|
|
||
|
|
function _check_timeout($fp)
|
||
|
|
{
|
||
|
|
if ($this->read_timeout > 0) {
|
||
|
|
$fp_status = socket_get_status($fp);
|
||
|
|
if ($fp_status["timed_out"]) {
|
||
|
|
$this->timed_out = true;
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*======================================================================*\
|
||
|
|
Function: _connect
|
||
|
|
Purpose: make a socket connection
|
||
|
|
Input: $fp file pointer
|
||
|
|
\*======================================================================*/
|
||
|
|
|
||
|
|
function _connect(&$fp)
|
||
|
|
{
|
||
|
|
if(!empty($this->proxy_host) && !empty($this->proxy_port))
|
||
|
|
{
|
||
|
|
$this->_isproxy = true;
|
||
|
|
$host = $this->proxy_host;
|
||
|
|
$port = $this->proxy_port;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
$host = $this->host;
|
||
|
|
$port = $this->port;
|
||
|
|
}
|
||
|
|
|
||
|
|
$this->status = 0;
|
||
|
|
|
||
|
|
if($fp = fsockopen(
|
||
|
|
$host,
|
||
|
|
$port,
|
||
|
|
$errno,
|
||
|
|
$errstr,
|
||
|
|
$this->_fp_timeout
|
||
|
|
))
|
||
|
|
{
|
||
|
|
// socket connection succeeded
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
// socket connection failed
|
||
|
|
$this->status = $errno;
|
||
|
|
switch($errno)
|
||
|
|
{
|
||
|
|
case -3:
|
||
|
|
$this->error="socket creation failed (-3)";
|
||
|
|
case -4:
|
||
|
|
$this->error="dns lookup failure (-4)";
|
||
|
|
case -5:
|
||
|
|
$this->error="connection refused or timed out (-5)";
|
||
|
|
default:
|
||
|
|
$this->error="connection failed (".$errno.")";
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
/*======================================================================*\
|
||
|
|
Function: _disconnect
|
||
|
|
Purpose: disconnect a socket connection
|
||
|
|
Input: $fp file pointer
|
||
|
|
\*======================================================================*/
|
||
|
|
|
||
|
|
function _disconnect($fp)
|
||
|
|
{
|
||
|
|
return(fclose($fp));
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*======================================================================*\
|
||
|
|
Function: _prepare_post_body
|
||
|
|
Purpose: Prepare post body according to encoding type
|
||
|
|
Input: $formvars - form variables
|
||
|
|
$formfiles - form upload files
|
||
|
|
Output: post body
|
||
|
|
\*======================================================================*/
|
||
|
|
|
||
|
|
function _prepare_post_body($formvars, $formfiles)
|
||
|
|
{
|
||
|
|
settype($formvars, "array");
|
||
|
|
settype($formfiles, "array");
|
||
|
|
|
||
|
|
if (count($formvars) == 0 && count($formfiles) == 0)
|
||
|
|
return;
|
||
|
|
|
||
|
|
switch ($this->_submit_type) {
|
||
|
|
case "application/x-www-form-urlencoded":
|
||
|
|
reset($formvars);
|
||
|
|
while(list($key,$val) = each($formvars)) {
|
||
|
|
if (is_array($val) || is_object($val)) {
|
||
|
|
while (list($cur_key, $cur_val) = each($val)) {
|
||
|
|
$postdata .= urlencode($key)."[]=".urlencode($cur_val)."&";
|
||
|
|
}
|
||
|
|
} else
|
||
|
|
$postdata .= urlencode($key)."=".urlencode($val)."&";
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
|
||
|
|
case "multipart/form-data":
|
||
|
|
$this->_mime_boundary = "Snoopy".md5(uniqid(microtime()));
|
||
|
|
|
||
|
|
reset($formvars);
|
||
|
|
while(list($key,$val) = each($formvars)) {
|
||
|
|
if (is_array($val) || is_object($val)) {
|
||
|
|
while (list($cur_key, $cur_val) = each($val)) {
|
||
|
|
$postdata .= "--".$this->_mime_boundary."\r\n";
|
||
|
|
$postdata .= "Content-Disposition: form-data; name=\"$key\[\]\"\r\n\r\n";
|
||
|
|
$postdata .= "$cur_val\r\n";
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
$postdata .= "--".$this->_mime_boundary."\r\n";
|
||
|
|
$postdata .= "Content-Disposition: form-data; name=\"$key\"\r\n\r\n";
|
||
|
|
$postdata .= "$val\r\n";
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
reset($formfiles);
|
||
|
|
while (list($field_name, $file_names) = each($formfiles)) {
|
||
|
|
settype($file_names, "array");
|
||
|
|
while (list(, $file_name) = each($file_names)) {
|
||
|
|
if (!is_readable($file_name)) continue;
|
||
|
|
|
||
|
|
$fp = fopen($file_name, "r");
|
||
|
|
$file_content = fread($fp, filesize($file_name));
|
||
|
|
fclose($fp);
|
||
|
|
$base_name = basename($file_name);
|
||
|
|
|
||
|
|
$postdata .= "--".$this->_mime_boundary."\r\n";
|
||
|
|
$postdata .= "Content-Disposition: form-data; name=\"$field_name\"; filename=\"$base_name\"\r\n\r\n";
|
||
|
|
$postdata .= "$file_content\r\n";
|
||
|
|
}
|
||
|
|
}
|
||
|
|
$postdata .= "--".$this->_mime_boundary."--\r\n";
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
return $postdata;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
?>
|