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<?php/*************************************************Snoopy - the PHP net clientAuthor: Monte Ohrt <monte@ispi.net>Copyright (c): 1999-2000 ispi, all rights reservedVersion: 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 USAYou may contact the author of Snoopy by e-mail at:monte@ispi.netOr, write to:Monte OhrtCTO, ispi237 S. 70th suite 220Lincoln, NE 68510The latest version of Snoopy can be obtained from:http://snoopy.sourceforge.com*************************************************/class Snoopy{/**** Public variables ****//* user definable vars */var $host = "www.php.net"; // host name we are connecting tovar $port = 80; // port we are connecting tovar $proxy_host = ""; // proxy host to usevar $proxy_port = ""; // proxy port to usevar $agent = "Snoopy v1.0"; // agent we masquerade asvar $referer = ""; // referer info to passvar $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 = disallowvar $lastredirectaddr = ""; // contains address of last redirected addressvar $offsiteok = true; // allows redirection off-sitevar $maxframes = 0; // frame content depth maximum. 0 = disallowvar $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 authenticationvar $pass = ""; // password for http authentication// http accept typesvar $accept = "image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, */*";var $results = ""; // where the content is putvar $error = ""; // error messages sent herevar $response_code = ""; // response code returned from servervar $headers = array(); // headers returned from server sent herevar $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 timeoutsvar $timed_out = false; // if a read operation timed outvar $status = 0; // http request statusvar $curl_path = "/usr/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 methodvar $_httpversion = "HTTP/1.0"; // default http request versionvar $_submit_method = "POST"; // default submit methodvar $_submit_type = "application/x-www-form-urlencoded"; // default submit typevar $_mime_boundary = ""; // MIME boundary for multipart/form-data submit typevar $_redirectaddr = false; // will be set if page fetched is a redirectvar $_redirectdepth = 0; // increments on an http redirectvar $_frameurls = array(); // frame src urlsvar $_framedepth = 0; // increments on frame depthvar $_isproxy = false; // set if using a proxy servervar $_fp_timeout = 30; // timeout for socket connection/*======================================================================*\Function: fetchPurpose: fetch the contents of a web page(and possibly other protocols in thefuture like ftp, nntp, gopher, etc.)Input: $URI the location of the page to fetchOutput: $this->results the output text from the fetch\*======================================================================*/function fetch($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 > $this->_redirectdepth){// only follow redirect if it's on this site, or offsiteok is trueif(preg_match("|^http://".preg_quote($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++;}elsebreak;}}}else{return false;}return true;break;case "https":if(!$this->curl_path || (!is_executable($this->curl_path))) {$this->error = "Bad curl ($this->curl_path), can't fetch HTTPS \n";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 > $this->_redirectdepth){// only follow redirect if it's on this site, or offsiteok is trueif(preg_match("|^http://".preg_quote($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++;}elsebreak;}}return true;break;default:// not a valid protocol$this->error = 'Invalid protocol "'.$URI_PARTS["scheme"].'"\n';return false;break;}return true;}/*======================================================================*\Private functions\*======================================================================*//*======================================================================*\Function: _striplinksPurpose: strip the hyperlinks from an html documentInput: $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 subpatternwhile(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 linksreturn $match;}/*======================================================================*\Function: _stripformPurpose: strip the form elements from an html documentInput: $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 linksreturn $match;}/*======================================================================*\Function: _striptextPurpose: strip the text from an html documentInput: $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: _expandlinksPurpose: expand each link into a fully qualified URLInput: $links the links to qualify$URI the full URI to get the base fromOutput: $expandedLinks the expanded links\*======================================================================*/function _expandlinks($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: _httprequestPurpose: go get the http data from the serverInput: $url the url to fetch$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 dataif ( 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 neededif ($this->read_timeout > 0)socket_set_timeout($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$/", $currentHeader) )break;// if a header begins with Location: or URI:, set the redirectif(preg_match("/^(Location:|URI:)/i",$currentHeader)){// get URL portion of the redirectpreg_match("/^(Location:|URI:)\s+(.*)/",chop($currentHeader),$matches);// look for :// in the Location header to see if hostname is includedif(!preg_match("|\:\/\/|",$matches[2])){// no host in the path, so prepend$this->_redirectaddr = $URI_PARTS["scheme"]."://".$this->host.":".$this->port;// eliminate double slashif(!preg_match("|^/|",$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;}}// gunzipif ( $is_gzipped ) {// per http://www.php.net/manual/en/function.gzencode.php$results = substr($results, 10);$results = gzinflate($results);}if ($this->read_timeout > 0 && $this->_check_timeout($fp)){$this->status=-100;return false;}// check if there is a a redirect meta tagif(preg_match("'<meta[\s]*http-equiv[^>]*?content[\s]*=[\s]*[\"\']?\d+;[\s]+URL[\s]*=[\s]*([^\"\']*?)[\"\']?>'i",$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[] = $results;// no framed contentelse$this->results = $results;return true;}/*======================================================================*\Function: _httpsrequestPurpose: go get the https data from the server using curlInput: $url the url to fetch$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\"".escapeshellcmd($cmdline_params)." ".escapeshellcmd($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); $currentHeader++){// if a header begins with Location: or URI:, set the redirectif(preg_match("/^(Location: |URI: )/i",$result_headers[$currentHeader])){// get URL portion of the redirectpreg_match("/^(Location: |URI:)(.*)/",chop($result_headers[$currentHeader]),$matches);// look for :// in the Location header to see if hostname is includedif(!preg_match("|\:\/\/|",$matches[2])){// no host in the path, so prepend$this->_redirectaddr = $URI_PARTS["scheme"]."://".$this->host.":".$this->port;// eliminate double slashif(!preg_match("|^/|",$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 tagif(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[] = $results;// no framed contentelse$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_timeoutPurpose: checks whether timeout has occurredInput: $fp file pointer\*======================================================================*/function _check_timeout($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: _connectPurpose: make a socket connectionInput: $fp file pointer\*======================================================================*/function _connect(&$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 succeededreturn 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: _disconnectPurpose: disconnect a socket connectionInput: $fp file pointer\*======================================================================*/function _disconnect($fp){return(fclose($fp));}/*======================================================================*\Function: _prepare_post_bodyPurpose: Prepare post body according to encoding typeInput: $formvars - form variables$formfiles - form upload filesOutput: 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;}}?>