基于PHP的汉狐php搜索引擎(Hanfox Search Engine).zip

<?php /************************************************* Snoopy - the PHP net client Author: Monte Ohrt <monte@ispi.net> Copyright (c): 1999-2008 New Digital Group, all rights reserved Version: 1.2.4 * 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@ohrt.com The latest version of Snoopy can be obtained from: http://snoopy.sourceforge.net/ *************************************************/ class Snoopy { /**** Public variables ****/ /* user definable vars */ var $host = "www.php.net"; // 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 $proxy_user = ""; // proxy user to use var $proxy_pass = ""; // proxy password to use var $agent = "Snoopy v1.2.4"; // 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() // submitlinks(), and submittext() 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 $temp_dir = "/tmp"; // temporary directory that the webserver // has permission to write to. // under Windows, this should be C:\temp 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. /**** 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 = $URI_PARTS["pass"]; if (empty($URI_PARTS["query"])) $URI_PARTS["query"] = ''; if (empty($URI_PARTS["path"])) $URI_PARTS["path"] = ''; switch(strtolower($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 = $URI_PARTS["path"].($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) return false; if(function_exists("is_executable")) if (!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 f