1002 lines
39 KiB
PHP
1002 lines
39 KiB
PHP
<?php
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/*************************************************
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*
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* Snoopy - the PHP net client
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* Author: Monte Ohrt <monte@ohrt.com>
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* Copyright (c): 1999-2014, all rights reserved
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* Version: 2.0.0
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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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*
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* You may contact the author of Snoopy by e-mail at:
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* monte@ohrt.com
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*
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* The latest version of Snoopy can be obtained from:
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* http://snoopy.sourceforge.net/
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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 $scheme = 'http'; // http or https
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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 $proxy_user = ""; // proxy user to use
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var $proxy_pass = ""; // proxy password to use
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var $agent = "Snoopy v2.0.0"; // 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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// submitlinks(), and submittext()
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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 $temp_dir = "/tmp"; // temporary directory that the webserver
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// has permission to write to.
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// under Windows, this should be C:\temp
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var $curl_path = false;
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// deprecated, snoopy no longer uses curl for https requests,
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// but instead requires the openssl extension.
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// send Accept-encoding: gzip?
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var $use_gzip = true;
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// file or directory with CA certificates to verify remote host with
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var $cafile;
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var $capath;
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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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$URI_PARTS = parse_url($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 = $URI_PARTS["pass"];
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if (empty($URI_PARTS["query"]))
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$URI_PARTS["query"] = '';
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if (empty($URI_PARTS["path"]))
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$URI_PARTS["path"] = '';
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$fp = null;
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switch (strtolower($URI_PARTS["scheme"])) {
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case "https":
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if (!extension_loaded('openssl')) {
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trigger_error("openssl extension required for HTTPS", E_USER_ERROR);
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exit;
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}
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$this->port = 443;
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case "http":
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$this->scheme = strtolower($URI_PARTS["scheme"]);
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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($fp)) {
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if ($this->_isproxy) {
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// using proxy, send entire URI
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$this->_httprequest($URI, $fp, $URI, $this->_httpmethod);
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} else {
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$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->_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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/* url was redirected, check if we've hit the max depth */
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if ($this->maxredirs > $this->_redirectdepth) {
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// only follow redirect if it's on this site, or offsiteok is true
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if (preg_match("|^https?://" . preg_quote($this->host) . "|i", $this->_redirectaddr) || $this->offsiteok) {
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/* follow the redirect */
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$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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$frameurls = $this->_frameurls;
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$this->_frameurls = array();
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while (list(, $frameurl) = each($frameurls)) {
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if ($this->_framedepth < $this->maxframes) {
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$this->fetch($frameurl);
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$this->_framedepth++;
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} else
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break;
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}
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}
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} else {
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return false;
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}
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return $this;
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break;
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default:
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// not a valid protocol
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$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 $this;
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}
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/*======================================================================*\
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Function: submit
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Purpose: submit an http(s) form
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Input: $URI the location to post the data
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$formvars the formvars to use.
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format: $formvars["var"] = "val";
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$formfiles an array of files to submit
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format: $formfiles["var"] = "/dir/filename.ext";
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Output: $this->results the text output from the post
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\*======================================================================*/
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function submit($URI, $formvars = "", $formfiles = "")
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{
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unset($postdata);
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$postdata = $this->_prepare_post_body($formvars, $formfiles);
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$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 = $URI_PARTS["pass"];
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if (empty($URI_PARTS["query"]))
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$URI_PARTS["query"] = '';
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if (empty($URI_PARTS["path"]))
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$URI_PARTS["path"] = '';
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switch (strtolower($URI_PARTS["scheme"])) {
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case "https":
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if (!extension_loaded('openssl')) {
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trigger_error("openssl extension required for HTTPS", E_USER_ERROR);
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exit;
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}
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$this->port = 443;
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case "http":
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$this->scheme = strtolower($URI_PARTS["scheme"]);
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$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($fp)) {
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if ($this->_isproxy) {
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// using proxy, send entire URI
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$this->_httprequest($URI, $fp, $URI, $this->_submit_method, $this->_submit_type, $postdata);
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} else {
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$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->_httprequest($path, $fp, $URI, $this->_submit_method, $this->_submit_type, $postdata);
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}
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$this->_disconnect($fp);
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if ($this->_redirectaddr) {
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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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if (!preg_match("|^" . $URI_PARTS["scheme"] . "://|", $this->_redirectaddr))
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$this->_redirectaddr = $this->_expandlinks($this->_redirectaddr, $URI_PARTS["scheme"] . "://" . $URI_PARTS["host"]);
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// only follow redirect if it's on this site, or offsiteok is true
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if (preg_match("|^https?://" . preg_quote($this->host) . "|i", $this->_redirectaddr) || $this->offsiteok) {
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/* follow the redirect */
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$this->_redirectdepth++;
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$this->lastredirectaddr = $this->_redirectaddr;
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if (strpos($this->_redirectaddr, "?") > 0)
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$this->fetch($this->_redirectaddr); // the redirect has changed the request method from post to get
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else
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$this->submit($this->_redirectaddr, $formvars, $formfiles);
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}
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}
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}
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if ($this->_framedepth < $this->maxframes && count($this->_frameurls) > 0) {
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$frameurls = $this->_frameurls;
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$this->_frameurls = array();
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while (list(, $frameurl) = each($frameurls)) {
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if ($this->_framedepth < $this->maxframes) {
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$this->fetch($frameurl);
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$this->_framedepth++;
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} else
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break;
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}
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}
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} else {
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return false;
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}
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return $this;
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break;
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default:
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// not a valid protocol
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$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 $this;
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}
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/*======================================================================*\
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Function: fetchlinks
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Purpose: fetch the links from a web page
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Input: $URI where you are fetching from
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Output: $this->results an array of the URLs
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\*======================================================================*/
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function fetchlinks($URI)
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{
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if ($this->fetch($URI) !== false) {
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if ($this->lastredirectaddr)
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$URI = $this->lastredirectaddr;
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if (is_array($this->results)) {
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for ($x = 0; $x < count($this->results); $x++)
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$this->results[$x] = $this->_striplinks($this->results[$x]);
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} else
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$this->results = $this->_striplinks($this->results);
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if ($this->expandlinks)
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$this->results = $this->_expandlinks($this->results, $URI);
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return $this;
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} else
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return false;
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}
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/*======================================================================*\
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Function: fetchform
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Purpose: fetch the form elements from a web page
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Input: $URI where you are fetching from
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Output: $this->results the resulting html form
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\*======================================================================*/
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function fetchform($URI)
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{
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if ($this->fetch($URI) !== false) {
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if (is_array($this->results)) {
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for ($x = 0; $x < count($this->results); $x++)
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$this->results[$x] = $this->_stripform($this->results[$x]);
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} else
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$this->results = $this->_stripform($this->results);
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return $this;
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} else
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return false;
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}
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/*======================================================================*\
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Function: fetchtext
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Purpose: fetch the text from a web page, stripping the links
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Input: $URI where you are fetching from
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Output: $this->results the text from the web page
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\*======================================================================*/
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function fetchtext($URI)
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{
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if ($this->fetch($URI) !== false) {
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if (is_array($this->results)) {
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for ($x = 0; $x < count($this->results); $x++)
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$this->results[$x] = $this->_striptext($this->results[$x]);
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} else
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$this->results = $this->_striptext($this->results);
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return $this;
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} else
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return false;
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}
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/*======================================================================*\
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Function: submitlinks
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Purpose: grab links from a form submission
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Input: $URI where you are submitting from
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Output: $this->results an array of the links from the post
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\*======================================================================*/
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function submitlinks($URI, $formvars = "", $formfiles = "")
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{
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if ($this->submit($URI, $formvars, $formfiles) !== false) {
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if ($this->lastredirectaddr)
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$URI = $this->lastredirectaddr;
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if (is_array($this->results)) {
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for ($x = 0; $x < count($this->results); $x++) {
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$this->results[$x] = $this->_striplinks($this->results[$x]);
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if ($this->expandlinks)
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$this->results[$x] = $this->_expandlinks($this->results[$x], $URI);
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}
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} else {
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$this->results = $this->_striplinks($this->results);
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if ($this->expandlinks)
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$this->results = $this->_expandlinks($this->results, $URI);
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}
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return $this;
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} else
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return false;
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}
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/*======================================================================*\
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Function: submittext
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Purpose: grab text from a form submission
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Input: $URI where you are submitting from
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Output: $this->results the text from the web page
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\*======================================================================*/
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function submittext($URI, $formvars = "", $formfiles = "")
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{
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if ($this->submit($URI, $formvars, $formfiles) !== false) {
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if ($this->lastredirectaddr)
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$URI = $this->lastredirectaddr;
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if (is_array($this->results)) {
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for ($x = 0; $x < count($this->results); $x++) {
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$this->results[$x] = $this->_striptext($this->results[$x]);
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if ($this->expandlinks)
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$this->results[$x] = $this->_expandlinks($this->results[$x], $URI);
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}
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} else {
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$this->results = $this->_striptext($this->results);
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if ($this->expandlinks)
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$this->results = $this->_expandlinks($this->results, $URI);
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}
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return $this;
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} else
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return false;
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}
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/*======================================================================*\
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Function: set_submit_multipart
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Purpose: Set the form submission content type to
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multipart/form-data
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\*======================================================================*/
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function set_submit_multipart()
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{
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$this->_submit_type = "multipart/form-data";
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return $this;
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}
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/*======================================================================*\
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Function: set_submit_normal
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Purpose: Set the form submission content type to
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application/x-www-form-urlencoded
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\*======================================================================*/
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function set_submit_normal()
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{
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$this->_submit_type = "application/x-www-form-urlencoded";
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return $this;
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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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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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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.
|
|
|
|
$search = array("'<script[^>]*?>.*?</script>'si", // strip out javascript
|
|
"'<[\/\!]*?[^<>]*?>'si", // strip out html tags
|
|
"'([\r\n])[\s]+'", // strip out white space
|
|
"'&(quot|#34|#034|#x22);'i", // replace html entities
|
|
"'&(amp|#38|#038|#x26);'i", // added hexadecimal values
|
|
"'&(lt|#60|#060|#x3c);'i",
|
|
"'&(gt|#62|#062|#x3e);'i",
|
|
"'&(nbsp|#160|#xa0);'i",
|
|
"'&(iexcl|#161);'i",
|
|
"'&(cent|#162);'i",
|
|
"'&(pound|#163);'i",
|
|
"'&(copy|#169);'i",
|
|
"'&(reg|#174);'i",
|
|
"'&(deg|#176);'i",
|
|
"'&(#39|#039|#x27);'",
|
|
"'&(euro|#8364);'i", // europe
|
|
"'&a(uml|UML);'", // german
|
|
"'&o(uml|UML);'",
|
|
"'&u(uml|UML);'",
|
|
"'&A(uml|UML);'",
|
|
"'&O(uml|UML);'",
|
|
"'&U(uml|UML);'",
|
|
"'ß'i",
|
|
);
|
|
$replace = array("",
|
|
"",
|
|
"\\1",
|
|
"\"",
|
|
"&",
|
|
"<",
|
|
">",
|
|
" ",
|
|
chr(161),
|
|
chr(162),
|
|
chr(163),
|
|
chr(169),
|
|
chr(174),
|
|
chr(176),
|
|
chr(39),
|
|
chr(128),
|
|
"ä",
|
|
"ö",
|
|
"ü",
|
|
"Ä",
|
|
"Ö",
|
|
"Ü",
|
|
"ß",
|
|
);
|
|
|
|
$text = preg_replace($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]);
|
|
$match = preg_replace("|/$|", "", $match);
|
|
$match_part = parse_url($match);
|
|
$match_root =
|
|
$match_part["scheme"] . "://" . $match_part["host"];
|
|
|
|
$search = array("|^http://" . preg_quote($this->host) . "|i",
|
|
"|^(\/)|i",
|
|
"|^(?!http://)(?!mailto:)|i",
|
|
"|/\./|",
|
|
"|/[^\/]+/\.\./|"
|
|
);
|
|
|
|
$replace = array("",
|
|
$match_root . "/",
|
|
$match . "/",
|
|
"/",
|
|
"/"
|
|
);
|
|
|
|
$expandedLinks = preg_replace($search, $replace, $links);
|
|
|
|
return $expandedLinks;
|
|
}
|
|
|
|
/*======================================================================*\
|
|
Function: _httprequest
|
|
Purpose: go get the http(s) 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 = "")
|
|
{
|
|
$cookie_headers = '';
|
|
if ($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->host) && !isset($this->rawheaders['Host'])) {
|
|
$headers .= "Host: " . $this->host;
|
|
if (!empty($this->port) && $this->port != '80')
|
|
$headers .= ":" . $this->port;
|
|
$headers .= "\r\n";
|
|
}
|
|
if (!empty($this->agent))
|
|
$headers .= "User-Agent: " . $this->agent . "\r\n";
|
|
if (!empty($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 . ":" . $this->pass) . "\r\n";
|
|
|
|
//add proxy auth headers
|
|
if (!empty($this->proxy_user))
|
|
$headers .= 'Proxy-Authorization: ' . 'Basic ' . base64_encode($this->proxy_user . ':' . $this->proxy_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", $currentHeader)) {
|
|
// get URL portion of the redirect
|
|
preg_match("/^(Location:|URI:)[ ]+(.*)/i", chop($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 = '';
|
|
do {
|
|
$_data = fread($fp, $this->maxlength);
|
|
if (strlen($_data) == 0) {
|
|
break;
|
|
}
|
|
$results .= $_data;
|
|
} while (true);
|
|
|
|
// gunzip
|
|
if ($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 $this;
|
|
}
|
|
|
|
/*======================================================================*\
|
|
Function: setcookies()
|
|
Purpose: set cookies for a redirection
|
|
\*======================================================================*/
|
|
|
|
function setcookies()
|
|
{
|
|
for ($x = 0; $x < count($this->headers); $x++) {
|
|
if (preg_match('/^set-cookie:[\s]+([^=]+)=([^;]+)/i', $this->headers[$x], $match))
|
|
$this->cookies[$match[1]] = urldecode($match[2]);
|
|
}
|
|
return $this;
|
|
}
|
|
|
|
|
|
/*======================================================================*\
|
|
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 = $this->proxy_port;
|
|
|
|
if ($this->scheme == 'https') {
|
|
trigger_error("HTTPS connections over proxy are currently not supported", E_USER_ERROR);
|
|
exit;
|
|
}
|
|
} else {
|
|
$host = $this->host;
|
|
$port = $this->port;
|
|
}
|
|
|
|
$this->status = 0;
|
|
|
|
$context_opts = array();
|
|
|
|
if ($this->scheme == 'https') {
|
|
// if cafile or capath is specified, enable certificate
|
|
// verification (including name checks)
|
|
if (isset($this->cafile) || isset($this->capath)) {
|
|
$context_opts['ssl'] = array(
|
|
'verify_peer' => true,
|
|
'CN_match' => $this->host,
|
|
'disable_compression' => true,
|
|
);
|
|
|
|
if (isset($this->cafile))
|
|
$context_opts['ssl']['cafile'] = $this->cafile;
|
|
if (isset($this->capath))
|
|
$context_opts['ssl']['capath'] = $this->capath;
|
|
}
|
|
|
|
$host = 'ssl://' . $host;
|
|
}
|
|
|
|
$context = stream_context_create($context_opts);
|
|
|
|
if (version_compare(PHP_VERSION, '5.0.0', '>')) {
|
|
if($this->scheme == 'http')
|
|
$host = "tcp://" . $host;
|
|
$fp = stream_socket_client(
|
|
"$host:$port",
|
|
$errno,
|
|
$errmsg,
|
|
$this->_fp_timeout,
|
|
STREAM_CLIENT_CONNECT,
|
|
$context);
|
|
} else {
|
|
$fp = fsockopen(
|
|
$host,
|
|
$port,
|
|
$errno,
|
|
$errstr,
|
|
$this->_fp_timeout,
|
|
$context);
|
|
}
|
|
|
|
if ($fp) {
|
|
// 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");
|
|
$postdata = '';
|
|
|
|
if (count($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;
|
|
}
|
|
|
|
/*======================================================================*\
|
|
Function: getResults
|
|
Purpose: return the results of a request
|
|
Output: string results
|
|
\*======================================================================*/
|
|
|
|
function getResults()
|
|
{
|
|
return $this->results;
|
|
}
|
|
}
|
|
|
|
?>
|