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- Adding a new class to fetch remote files through PHP.

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commit ef5b38b267447e3be499915a3552ff8fe4315f17 1 parent 276a8df
willcast authored
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  1. +1,208 −0 lib/snoopy/Snoopy.class.inc
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1,208 lib/snoopy/Snoopy.class.inc
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+<?php
+
+/*************************************************
+
+Snoopy - the PHP net client
+Author: Monte Ohrt <monte@ispi.net>
+Copyright (c): 1999-2000 ispi, all rights reserved
+Version: 1.0
+
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+You may contact the author of Snoopy by e-mail at:
+monte@ispi.net
+
+Or, write to:
+Monte Ohrt
+CTO, ispi
+237 S. 70th suite 220
+Lincoln, NE 68510
+
+The latest version of Snoopy can be obtained from:
+http://snoopy.sourceforge.com
+
+*************************************************/
+
+class Snoopy
+{
+ /**** Public variables ****/
+
+ /* user definable vars */
+
+ var $host = "www.moodle.org"; // host name we are connecting to
+ var $port = 80; // port we are connecting to
+ var $proxy_host = ""; // proxy host to use
+ var $proxy_port = ""; // proxy port to use
+ var $agent = "Snoopy v1.0"; // agent we masquerade as
+ var $referer = ""; // referer info to pass
+ var $cookies = array(); // array of cookies to pass
+ // $cookies["username"]="joe";
+ var $rawheaders = array(); // array of raw headers to send
+ // $rawheaders["Content-type"]="text/html";
+
+ var $maxredirs = 5; // http redirection depth maximum. 0 = disallow
+ var $lastredirectaddr = ""; // contains address of last redirected address
+ var $offsiteok = true; // allows redirection off-site
+ var $maxframes = 0; // frame content depth maximum. 0 = disallow
+ var $expandlinks = true; // expand links to fully qualified URLs.
+ // this only applies to fetchlinks()
+ // or submitlinks()
+ var $passcookies = true; // pass set cookies back through redirects
+ // NOTE: this currently does not respect
+ // dates, domains or paths.
+
+ var $user = ""; // user for http authentication
+ var $pass = ""; // password for http authentication
+
+ // http accept types
+ var $accept = "image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, */*";
+
+ var $results = ""; // where the content is put
+
+ var $error = ""; // error messages sent here
+ var $response_code = ""; // response code returned from server
+ var $headers = array(); // headers returned from server sent here
+ var $maxlength = 500000; // max return data length (body)
+ var $read_timeout = 0; // timeout on read operations, in seconds
+ // supported only since PHP 4 Beta 4
+ // set to 0 to disallow timeouts
+ var $timed_out = false; // if a read operation timed out
+ var $status = 0; // http request status
+
+ var $curl_path = "/usr/local/bin/curl";
+ // Snoopy will use cURL for fetching
+ // SSL content if a full system path to
+ // the cURL binary is supplied here.
+ // set to false if you do not have
+ // cURL installed. See http://curl.haxx.se
+ // for details on installing cURL.
+ // Snoopy does *not* use the cURL
+ // library functions built into php,
+ // as these functions are not stable
+ // as of this Snoopy release.
+
+ // send Accept-encoding: gzip?
+ var $use_gzip = true;
+
+ /**** Private variables ****/
+
+ var $_maxlinelen = 4096; // max line length (headers)
+
+ var $_httpmethod = "GET"; // default http request method
+ var $_httpversion = "HTTP/1.0"; // default http request version
+ var $_submit_method = "POST"; // default submit method
+ var $_submit_type = "application/x-www-form-urlencoded"; // default submit type
+ var $_mime_boundary = ""; // MIME boundary for multipart/form-data submit type
+ var $_redirectaddr = false; // will be set if page fetched is a redirect
+ var $_redirectdepth = 0; // increments on an http redirect
+ var $_frameurls = array(); // frame src urls
+ var $_framedepth = 0; // increments on frame depth
+
+ var $_isproxy = false; // set if using a proxy server
+ var $_fp_timeout = 30; // timeout for socket connection
+
+/*======================================================================*\
+ Function: fetch
+ Purpose: fetch the contents of a web page
+ (and possibly other protocols in the
+ future like ftp, nntp, gopher, etc.)
+ Input: $URI the location of the page to fetch
+ Output: $this->results the output text from the fetch
+\*======================================================================*/
+
+ function fetch($URI)
+ {
+
+ //preg_match("|^([^:]+)://([^:/]+)(:[\d]+)*(.*)|",$URI,$URI_PARTS);
+ $URI_PARTS = parse_url($URI);
+ if (!empty($URI_PARTS["user"]))
+ $this->user = $URI_PARTS["user"];
+ if (!empty($URI_PARTS["pass"]))
+ $this->pass = $URI_PARTS["pass"];
+
+ switch($URI_PARTS["scheme"])
+ {
+ case "http":
+ $this->host = $URI_PARTS["host"];
+ if(!empty($URI_PARTS["port"]))
+ $this->port = $URI_PARTS["port"];
+ if($this->_connect($fp))
+ {
+ if($this->_isproxy)
+ {
+ // using proxy, send entire URI
+ $this->_httprequest($URI,$fp,$URI,$this->_httpmethod);
+ }
+ else
+ {
+ $path = $URI_PARTS["path"].(isset($URI_PARTS["query"]) ? "?".$URI_PARTS["query"] : "");
+ // no proxy, send only the path
+ $this->_httprequest($path, $fp, $URI, $this->_httpmethod);
+ }
+
+ $this->_disconnect($fp);
+
+ if($this->_redirectaddr)
+ {
+ /* url was redirected, check if we've hit the max depth */
+ if($this->maxredirs > $this->_redirectdepth)
+ {
+ // only follow redirect if it's on this site, or offsiteok is true
+ if(preg_match("|^http://".preg_quote($this->host)."|i",$this->_redirectaddr) || $this->offsiteok)
+ {
+ /* follow the redirect */
+ $this->_redirectdepth++;
+ $this->lastredirectaddr=$this->_redirectaddr;
+ $this->fetch($this->_redirectaddr);
+ }
+ }
+ }
+
+ if($this->_framedepth < $this->maxframes && count($this->_frameurls) > 0)
+ {
+ $frameurls = $this->_frameurls;
+ $this->_frameurls = array();
+
+ while(list(,$frameurl) = each($frameurls))
+ {
+ if($this->_framedepth < $this->maxframes)
+ {
+ $this->fetch($frameurl);
+ $this->_framedepth++;
+ }
+ else
+ break;
+ }
+ }
+ }
+ else
+ {
+ return false;
+ }
+ return true;
+ break;
+ case "https":
+ if(!$this->curl_path || (!is_executable($this->curl_path)))
+ return false;
+ $this->host = $URI_PARTS["host"];
+ if(!empty($URI_PARTS["port"]))
+ $this->port = $URI_PARTS["port"];
+ if($this->_isproxy)
+ {
+ // using proxy, send entire URI
+ $this->_httpsrequest($URI,$URI,$this->_httpmethod);
+ }
+ else
+ {
+ $path = $URI_PARTS["path"].($URI_PARTS["query"] ? "?".$URI_PARTS["query"] : "");
+ // no proxy, send only the path
+ $this->_httpsrequest($path, $URI, $this->_httpmethod);
+ }
+
+ if($this->_redirectaddr)
+ {
+ /* url was redirected, check if we've hit the max depth */
+ if($this->maxredirs > $this->_redirectdepth)
+ {
+ // only follow redirect if it's on this site, or offsiteok is true
+ if(preg_match("|^http://".preg_quote($this->host)."|i",$this->_redirectaddr) || $this->offsiteok)
+ {
+ /* follow the redirect */
+ $this->_redirectdepth++;
+ $this->lastredirectaddr=$this->_redirectaddr;
+ $this->fetch($this->_redirectaddr);
+ }
+ }
+ }
+
+ if($this->_framedepth < $this->maxframes && count($this->_frameurls) > 0)
+ {
+ $frameurls = $this->_frameurls;
+ $this->_frameurls = array();
+
+ while(list(,$frameurl) = each($frameurls))
+ {
+ if($this->_framedepth < $this->maxframes)
+ {
+ $this->fetch($frameurl);
+ $this->_framedepth++;
+ }
+ else
+ break;
+ }
+ }
+ return true;
+ break;
+ default:
+ // not a valid protocol
+ $this->error = 'Invalid protocol "'.$URI_PARTS["scheme"].'"\n';
+ return false;
+ break;
+ }
+ return true;
+ }
+
+/*======================================================================*\
+ Function: submit
+ Purpose: submit an http form
+ Input: $URI the location to post the data
+ $formvars the formvars to use.
+ format: $formvars["var"] = "val";
+ Output: $this->results the text output from the post
+\*======================================================================*/
+
+ function submit($URI, $formvars="", $formfiles="")
+ {
+ unset($postdata);
+
+ $postdata = $this->_prepare_post_body($formvars, $formfiles);
+
+ $URI_PARTS = parse_url($URI);
+ if (!empty($URI_PARTS["user"]))
+ $this->user = $URI_PARTS["user"];
+ if (!empty($URI_PARTS["pass"]))
+ $this->pass = $URI_PARTS["pass"];
+
+ switch($URI_PARTS["scheme"])
+ {
+ case "http":
+ $this->host = $URI_PARTS["host"];
+ if(!empty($URI_PARTS["port"]))
+ $this->port = $URI_PARTS["port"];
+ if($this->_connect($fp))
+ {
+ if($this->_isproxy)
+ {
+ // using proxy, send entire URI
+ $this->_httprequest($URI,$fp,$URI,$this->_submit_method,$this->_submit_type,$postdata);
+ }
+ else
+ {
+ $path = $URI_PARTS["path"].($URI_PARTS["query"] ? "?".$URI_PARTS["query"] : "");
+ // no proxy, send only the path
+ $this->_httprequest($path, $fp, $URI, $this->_submit_method, $this->_submit_type, $postdata);
+ }
+
+ $this->_disconnect($fp);
+
+ if($this->_redirectaddr)
+ {
+ /* url was redirected, check if we've hit the max depth */
+ if($this->maxredirs > $this->_redirectdepth)
+ {
+ if(!preg_match("|^".$URI_PARTS["scheme"]."://|", $this->_redirectaddr))
+ $this->_redirectaddr = $this->_expandlinks($this->_redirectaddr,$URI_PARTS["scheme"]."://".$URI_PARTS["host"]);
+
+ // only follow redirect if it's on this site, or offsiteok is true
+ if(preg_match("|^http://".preg_quote($this->host)."|i",$this->_redirectaddr) || $this->offsiteok)
+ {
+ /* follow the redirect */
+ $this->_redirectdepth++;
+ $this->lastredirectaddr=$this->_redirectaddr;
+ $this->submit($this->_redirectaddr,$formvars, $formfiles);
+ }
+ }
+ }
+
+ if($this->_framedepth < $this->maxframes && count($this->_frameurls) > 0)
+ {
+ $frameurls = $this->_frameurls;
+ $this->_frameurls = array();
+
+ while(list(,$frameurl) = each($frameurls))
+ {
+ if($this->_framedepth < $this->maxframes)
+ {
+ $this->fetch($frameurl);
+ $this->_framedepth++;
+ }
+ else
+ break;
+ }
+ }
+
+ }
+ else
+ {
+ return false;
+ }
+ return true;
+ break;
+ case "https":
+ if(!$this->curl_path || (!is_executable($this->curl_path)))
+ return false;
+ $this->host = $URI_PARTS["host"];
+ if(!empty($URI_PARTS["port"]))
+ $this->port = $URI_PARTS["port"];
+ if($this->_isproxy)
+ {
+ // using proxy, send entire URI
+ $this->_httpsrequest($URI, $URI, $this->_submit_method, $this->_submit_type, $postdata);
+ }
+ else
+ {
+ $path = $URI_PARTS["path"].($URI_PARTS["query"] ? "?".$URI_PARTS["query"] : "");
+ // no proxy, send only the path
+ $this->_httpsrequest($path, $URI, $this->_submit_method, $this->_submit_type, $postdata);
+ }
+
+ if($this->_redirectaddr)
+ {
+ /* url was redirected, check if we've hit the max depth */
+ if($this->maxredirs > $this->_redirectdepth)
+ {
+ if(!preg_match("|^".$URI_PARTS["scheme"]."://|", $this->_redirectaddr))
+ $this->_redirectaddr = $this->_expandlinks($this->_redirectaddr,$URI_PARTS["scheme"]."://".$URI_PARTS["host"]);
+
+ // only follow redirect if it's on this site, or offsiteok is true
+ if(preg_match("|^http://".preg_quote($this->host)."|i",$this->_redirectaddr) || $this->offsiteok)
+ {
+ /* follow the redirect */
+ $this->_redirectdepth++;
+ $this->lastredirectaddr=$this->_redirectaddr;
+ $this->submit($this->_redirectaddr,$formvars, $formfiles);
+ }
+ }
+ }
+
+ if($this->_framedepth < $this->maxframes && count($this->_frameurls) > 0)
+ {
+ $frameurls = $this->_frameurls;
+ $this->_frameurls = array();
+
+ while(list(,$frameurl) = each($frameurls))
+ {
+ if($this->_framedepth < $this->maxframes)
+ {
+ $this->fetch($frameurl);
+ $this->_framedepth++;
+ }
+ else
+ break;
+ }
+ }
+ return true;
+ break;
+
+ default:
+ // not a valid protocol
+ $this->error = 'Invalid protocol "'.$URI_PARTS["scheme"].'"\n';
+ return false;
+ break;
+ }
+ return true;
+ }
+
+/*======================================================================*\
+ Function: fetchlinks
+ Purpose: fetch the links from a web page
+ Input: $URI where you are fetching from
+ Output: $this->results an array of the URLs
+\*======================================================================*/
+
+ function fetchlinks($URI)
+ {
+ if ($this->fetch($URI))
+ {
+
+ if(is_array($this->results))
+ {
+ for($x=0;$x<count($this->results);$x++)
+ $this->results[$x] = $this->_striplinks($this->results[$x]);
+ }
+ else
+ $this->results = $this->_striplinks($this->results);
+
+ if($this->expandlinks)
+ $this->results = $this->_expandlinks($this->results, $URI);
+ return true;
+ }
+ else
+ return false;
+ }
+
+/*======================================================================*\
+ Function: fetchform
+ Purpose: fetch the form elements from a web page
+ Input: $URI where you are fetching from
+ Output: $this->results the resulting html form
+\*======================================================================*/
+
+ function fetchform($URI)
+ {
+
+ if ($this->fetch($URI))
+ {
+
+ if(is_array($this->results))
+ {
+ for($x=0;$x<count($this->results);$x++)
+ $this->results[$x] = $this->_stripform($this->results[$x]);
+ }
+ else
+ $this->results = $this->_stripform($this->results);
+
+ return true;
+ }
+ else
+ return false;
+ }
+
+
+/*======================================================================*\
+ Function: fetchtext
+ Purpose: fetch the text from a web page, stripping the links
+ Input: $URI where you are fetching from
+ Output: $this->results the text from the web page
+\*======================================================================*/
+
+ function fetchtext($URI)
+ {
+ if($this->fetch($URI))
+ {
+ if(is_array($this->results))
+ {
+ for($x=0;$x<count($this->results);$x++)
+ $this->results[$x] = $this->_striptext($this->results[$x]);
+ }
+ else
+ $this->results = $this->_striptext($this->results);
+ return true;
+ }
+ else
+ return false;
+ }
+
+/*======================================================================*\
+ Function: submitlinks
+ Purpose: grab links from a form submission
+ Input: $URI where you are submitting from
+ Output: $this->results an array of the links from the post
+\*======================================================================*/
+
+ function submitlinks($URI, $formvars="", $formfiles="")
+ {
+ if($this->submit($URI,$formvars, $formfiles))
+ {
+ if(is_array($this->results))
+ {
+ for($x=0;$x<count($this->results);$x++)
+ {
+ $this->results[$x] = $this->_striplinks($this->results[$x]);
+ if($this->expandlinks)
+ $this->results[$x] = $this->_expandlinks($this->results[$x],$URI);
+ }
+ }
+ else
+ {
+ $this->results = $this->_striplinks($this->results);
+ if($this->expandlinks)
+ $this->results = $this->_expandlinks($this->results,$URI);
+ }
+ return true;
+ }
+ else
+ return false;
+ }
+
+/*======================================================================*\
+ Function: submittext
+ Purpose: grab text from a form submission
+ Input: $URI where you are submitting from
+ Output: $this->results the text from the web page
+\*======================================================================*/
+
+ function submittext($URI, $formvars = "", $formfiles = "")
+ {
+ if($this->submit($URI,$formvars, $formfiles))
+ {
+ if(is_array($this->results))
+ {
+ for($x=0;$x<count($this->results);$x++)
+ {
+ $this->results[$x] = $this->_striptext($this->results[$x]);
+ if($this->expandlinks)
+ $this->results[$x] = $this->_expandlinks($this->results[$x],$URI);
+ }
+ }
+ else
+ {
+ $this->results = $this->_striptext($this->results);
+ if($this->expandlinks)
+ $this->results = $this->_expandlinks($this->results,$URI);
+ }
+ return true;
+ }
+ else
+ return false;
+ }
+
+
+
+/*======================================================================*\
+ Function: set_submit_multipart
+ Purpose: Set the form submission content type to
+ multipart/form-data
+\*======================================================================*/
+ function set_submit_multipart()
+ {
+ $this->_submit_type = "multipart/form-data";
+ }
+
+
+/*======================================================================*\
+ Function: set_submit_normal
+ Purpose: Set the form submission content type to
+ application/x-www-form-urlencoded
+\*======================================================================*/
+ function set_submit_normal()
+ {
+ $this->_submit_type = "application/x-www-form-urlencoded";
+ }
+
+
+
+
+/*======================================================================*\
+ Private functions
+\*======================================================================*/
+
+
+/*======================================================================*\
+ Function: _striplinks
+ Purpose: strip the hyperlinks from an html document
+ Input: $document document to strip.
+ Output: $match an array of the links
+\*======================================================================*/
+
+ function _striplinks($document)
+ {
+ preg_match_all("'<\s*a\s+.*href\s*=\s* # find <a href=
+ ([\"\'])? # find single or double quote
+ (?(1) (.*?)\\1 | ([^\s\>]+)) # if quote found, match up to next matching
+ # quote, otherwise match up to next space
+ 'isx",$document,$links);
+
+
+ // catenate the non-empty matches from the conditional subpattern
+
+ while(list($key,$val) = each($links[2]))
+ {
+ if(!empty($val))
+ $match[] = $val;
+ }
+
+ while(list($key,$val) = each($links[3]))
+ {
+ if(!empty($val))
+ $match[] = $val;
+ }
+
+ // return the links
+ return $match;
+ }
+
+/*======================================================================*\
+ Function: _stripform
+ Purpose: strip the form elements from an html document
+ Input: $document document to strip.
+ Output: $match an array of the links
+\*======================================================================*/
+
+ function _stripform($document)
+ {
+ preg_match_all("'<\/?(FORM|INPUT|SELECT|TEXTAREA|(OPTION))[^<>]*>(?(2)(.*(?=<\/?(option|select)[^<>]*>[\r\n]*)|(?=[\r\n]*))|(?=[\r\n]*))'Usi",$document,$elements);
+
+ // catenate the matches
+ $match = implode("\r\n",$elements[0]);
+
+ // return the links
+ return $match;
+ }
+
+
+
+/*======================================================================*\
+ Function: _striptext
+ Purpose: strip the text from an html document
+ Input: $document document to strip.
+ Output: $text the resulting text
+\*======================================================================*/
+
+ function _striptext($document)
+ {
+
+ // I didn't use preg eval (//e) since that is only available in PHP 4.0.
+ // so, list your entities one by one here. I included some of the
+ // more common ones.
+
+ $search = array("'<script[^>]*?>.*?</script>'si", // strip out javascript
+ "'<[\/\!]*?[^<>]*?>'si", // strip out html tags
+ "'([\r\n])[\s]+'", // strip out white space
+ "'&(quote|#34);'i", // replace html entities
+ "'&(amp|#38);'i",
+ "'&(lt|#60);'i",
+ "'&(gt|#62);'i",
+ "'&(nbsp|#160);'i",
+ "'&(iexcl|#161);'i",
+ "'&(cent|#162);'i",
+ "'&(pound|#163);'i",
+ "'&(copy|#169);'i"
+ );
+ $replace = array( "",
+ "",
+ "\\1",
+ "\"",
+ "&",
+ "<",
+ ">",
+ " ",
+ chr(161),
+ chr(162),
+ chr(163),
+ chr(169));
+
+ $text = preg_replace($search,$replace,$document);
+
+ return $text;
+ }
+
+/*======================================================================*\
+ Function: _expandlinks
+ Purpose: expand each link into a fully qualified URL
+ Input: $links the links to qualify
+ $URI the full URI to get the base from
+ Output: $expandedLinks the expanded links
+\*======================================================================*/
+
+ function _expandlinks($links,$URI)
+ {
+
+ preg_match("/^[^\?]+/",$URI,$match);
+
+ $match = preg_replace("|/[^\/\.]+\.[^\/\.]+$|","",$match[0]);
+
+ $search = array( "|^http://".preg_quote($this->host)."|i",
+ "|^(?!http://)(\/)?(?!mailto:)|i",
+ "|/\./|",
+ "|/[^\/]+/\.\./|"
+ );
+
+ $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")
+ 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;
+
+ $headerfile = uniqid(time());
+
+ exec($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];
+
+ $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;
+ }
+}
+
+?>
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