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<?php
/**
* $Id: Linkverifier.php,v 1.23.2.2 2007-05-25 20:16:04 matteo Exp $
*
* PMF_Linkverifier
*
* The PMF_Linkverifier class provides methods and functions for verifying URLs
*
* @author Minoru TODA <todam@netjapan.co.jp>
* @author Matteo Scaramuccia <matteo@scaramuccia.com>
* @author Thorsten Rinne <thorsten@phpmyfaq.de>
* @since 2005-08-01
* @copyright (c) 2005-2007 NetJapan, Inc. and phpMyFAQ Team
*
* Note: The package has been improved and fixed by Matteo Scaramuccia <matteo@scaramuccia.com>
* to best fit with PMF 1.6.x+
*
* The contents of this file are subject to the Mozilla Public License
* Version 1.1 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
* License for the specific language governing rights and limitations
* under the License.
*
* The Initial Developer of the Original Code is released for external use
* with permission from NetJapan, Inc. IT Administration Group.
*/
/* Defines number of times linkverifier follows 302 response before failing.
*
* Suggested value is above 10 redirects
*/
if (!defined('LINKVERIFIER_MAX_REDIRECT_COUNT')) {
define('LINKVERIFIER_MAX_REDIRECT_COUNT', 10);
}
/* Defines the number of seconds to wait for the remote server to respond
*
* Suggested value is 5 seconds
*/
if (!defined('LINKVERIFIER_CONNECT_TIMEOUT')) {
define('LINKVERIFIER_CONNECT_TIMEOUT', 5);
}
/* Defines the number of seconds to wait for the remote server to send data
*
* Suggested value is 10 seconds
*/
if (!defined('LINKVERIFIER_RESPONSE_TIMEOUT')) {
define('LINKVERIFIER_RESPONSE_TIMEOUT', 10);
}
/* Defines the behaviour when a user click "Edit FAQs" in the backend.
* Do you want an automatic links verification
* with live update of each links verification status?
*
* Suggested value is:
* a. false, if you don't use a cron/at entry to call 'cron.verifyurls.php' during each night.
* This will avoid browser high load (100% CPU)
* b. true, if you use a cron/at entry to call 'cron.verifyurls.php' during each night
*/
if (!defined('LINKVERIFIER_AUTOMATIC_CALL_ON_EDIT_FAQ')) {
define('LINKVERIFIER_AUTOMATIC_CALL_ON_EDIT_FAQ', false);
}
class PMF_Linkverifier
{
/* List of protocol and urls
*
* @var mixed
*/
var $urlpool = array();
/* List of prohibited prefixes and messages
*
* @var mixed
*/
var $warnlists = array();
/* List of URLs not to probe
*
* @var mixed
*/
var $ignorelists = array();
/* List of protocols we do not want to look at
*
* @var mixed
*/
var $invalid_protocols = array();
/* Last verify results (we might use it later)
*
* @var mixed
*/
var $lastResult = array();
/* List of hosts that are slow to resolve.
*
* @var mixed
*/
var $slow_hosts = array();
/**
* DB handle
*
* @var object
*/
var $db = null;
/**
* User
*
* @var integer
*/
var $user = null;
/**
* Constructor
*
* @access public
* @author Minoru TODA <todam@netjapan.co.jp>
* @author Matteo Scaramuccia <matteo@scaramuccia.com>
* @since 2005-08-01
*/
function PMF_Linkverifier($db, $user = null)
{
global $PMF_LANG;
$this->db = $db;
$this->user = $user;
if (!@extension_loaded('openssl')) { // PHP 4.3.0+: fsockopen needs OpenSSL
$this->addIgnoreProtocol("https:", sprintf($PMF_LANG['ad_linkcheck_protocol_unsupported'], "https"));
}
$this->addIgnoreProtocol("ftp:", sprintf($PMF_LANG['ad_linkcheck_protocol_unsupported'], "ftp"));
$this->addIgnoreProtocol("gopher:", sprintf($PMF_LANG['ad_linkcheck_protocol_unsupported'], "gopher"));
$this->addIgnoreProtocol("mailto:", sprintf($PMF_LANG['ad_linkcheck_protocol_unsupported'], "mailto"));
$this->addIgnoreProtocol("telnet:", sprintf($PMF_LANG['ad_linkcheck_protocol_unsupported'], "telnet"));
$this->addIgnoreProtocol("feed:", sprintf($PMF_LANG['ad_linkcheck_protocol_unsupported'], "feed"));
// Hack: these below are not real scheme for defining protocols like the ones above
$this->addIgnoreProtocol("file:", sprintf($PMF_LANG['ad_linkcheck_protocol_unsupported'], "file"));
$this->addIgnoreProtocol("javascript:", sprintf($PMF_LANG['ad_linkcheck_protocol_unsupported'], "javascript"));
// load list of URLs to ignore / fail
$this->loadConfigurationFromDB();
}
/**
* returns whether linkverifier is ready to verify URLs.
*
* @result boolean true if ready to verify URLs, otherwise false
* @access public
* @author Minoru TODA <todam@netjapan.co.jp>
* @since 2005-08-01
*/
function isReady()
{
global $PMF_CONF;
if (!(isset($PMF_CONF["main.referenceURL"]))) {
return false;
}
if ($PMF_CONF["main.referenceURL"] == "") {
return false;
}
return true;
}
/**
* Resets url pool for next batch of processing.
*
* @access public
* @author Minoru TODA <todam@netjapan.co.jp>
* @since 2005-08-01
*/
function resetPool()
{
$this->urlpool = array();
$this->lastResult = array();
}
/**
* This function adds entry to the internal warnlists.
* Use this if you want to mark certain URLs unsable (like internal links of a dev-site).
*
* @param string $urlprefix
* @param string $message
* @return boolean true, if successfully added, otherwise false
* @access public
* @author Minoru TODA <todam@netjapan.co.jp>
* @since 2005-08-01
*/
function addWarnlist($urlprefix = "", $message = "")
{
if ($urlprefix != "") {
$this->warnlists[$urlprefix] = $message;
return true;
} else {
return false;
}
}
/**
* This function adds entry to the internal ignore list.
* Some URL/sites makes PHP report 'connection failed', even when browsers can access them.
* URLs on ignore lists always reports as successful connect.
*
* @param string $url
* @param string $message
* @return boolean true, if successfully added, otherwise false
* @access public
* @author Minoru TODA <todam@netjapan.co.jp>
* @since 2005-08-01
*/
function addIgnorelist($url = "", $message = "")
{
if ($url != "") {
$this->ignorelists[strtolower($url)] = $message;
return true;
} else {
return false;
}
}
/**
* @param string $protocol
* @param string $message
* @return boolean true, if successfully added, otherwise false
* @access public
* @author Minoru TODA <todam@netjapan.co.jp>
* @since 2005-08-01
*/
function addIgnoreProtocol($protocol = "", $message = "")
{
if ($protocol != "") {
$this->invalid_protocols[strtolower($protocol)] = $message;
return true;
} else {
return false;
}
}
/**
* load ignore/warnlists from database
*
* @access public
* @author Minoru TODA <todam@netjapan.co.jp>
* @since 2005-09-29
*/
function loadConfigurationFromDB()
{
$query = "SELECT type, url, reason FROM ".SQLPREFIX."faqlinkverifyrules WHERE enabled = 'y'";
$result = $this->db->query($query);
while ($row = @$this->db->fetch_object($result)) {
switch (strtolower($row->type)) {
case 'ignore': $this->addIgnoreList($row->url, $row->reason);
break;
case 'warn': $this->addWarnlist($row->url, $row->reason);
break;
}
}
}
/**
* This function verifies whether a URL is in IgnoreList.
*
* @param string $url
* @return mixed $result false if URL should NOT be ignored. !false if ignored.
* @access private
* @*author Minoru TODA <todam@netjapan.co.jp>
* @since 2005-08-01
*/
function checkIfIgnoreLink($url = "")
{
$url = strtolower($url);
foreach ($this->invalid_protocols as $_protocol => $_message) {
if (strpos($url, $_protocol) === 0) {
return $_message;
}
}
foreach ($this->ignorelists as $_url => $_message) {
if ($url == $_url) {
return $_message;
}
}
return false;
}
/**
* This function verifies whether a URL should be forced as error (warnlist).
*
* @param string $url
* @return mixed $result false if URL should NOT be failed.. !false if qualifies as error.
* @access private
* @*author Minoru TODA <todam@netjapan.co.jp>
* @since 2005-08-01
*/
function checkIfForceErrorLink($url = "")
{
$url = strtolower($url);
foreach ($this->warnlists as $_protocol => $_message) {
if (strpos($url, $_protocol) === 0) {
return $_message;
}
}
return false;
}
/**
* This function converts relative uri into absolute uri using specific reference point.
* For example,
* $relativeuri = "test/foo.html"
* $referenceuri = "http://example.com:8000/sample/index.php"
* will generate "http://example.com:8000/sample/test/foo.html"
*
* @param string $relativeuri
* @param string $message
* @return string $result
* @access private
* @author Minoru TODA <todam@netjapan.co.jp>
* @since 2005-08-01
*/
function makeAbsoluteURL($relativeuri = "", $referenceuri = "")
{
// If relativeuri is protocol we don't want to handle, don't process it.
foreach ($this->invalid_protocols as $_protocol => $_message) {
if (strpos($relativeuri, $_protocol) === 0) {
return $relativeuri;
}
}
// If relativeuri is absolute URI, don't process it.
foreach (array("http://", "https://") as $_protocol) {
if (strpos($relativeuri, $_protocol) === 0) {
return $relativeuri;
}
}
// Split reference uri into parts.
$pathparts = parse_url($referenceuri);
// If port is specified in reference uri, prefix with ":"
if (isset($pathparts['port']) && $pathparts['port'] != "") {
$pathparts['port'] = ":".$pathparts['port'];
} else {
$pathparts['port'] = "";
}
// If path is not specified in reference uri, set as blank
if (isset($pathparts['path'])) {
$pathparts['path'] = str_replace("\\","/",$pathparts['path']);
$pathparts['path'] = preg_replace("/^.*(\/)$/i","", $pathparts['path']);
} else {
$pathparts['path'] = "";
}
// Recombine urls
if (substr($relativeuri,0,1) == "/") {
return $pathparts['scheme']."://".$pathparts['host'].$pathparts['port'].$relativeuri;
} else {
return $pathparts['scheme']."://".$pathparts['host'].$pathparts['port'].$pathparts['path']."/".$relativeuri;
}
}
/**
* This function parses HTML and extracts urls
*
* @param string $string
* @result mixed false if URL is not found, otherwise returns the number of URLs found.
* @access public
* @author Minoru TODA <todam@netjapan.co.jp>
* @since 2005-08-01
*/
function parse_string($string = "")
{
$urlcount = 0;
$types = array("href", "src", "url");
// Clean $this->urlpool
$this->urlpool = array();
while(list(,$type) = each($types)) {
preg_match_all("|[^?&]$type\=(\"?'?`?)([[:alnum:]\:%?=;&@/\ \.\_\-\{\}]+)\\1|i", $string, $matches);
$sz = sizeof($matches[2]);
for ($i=0;$i < $sz;$i++) {
$this->urlpool[$type][] = $matches[2][$i];
$urlcount++;
}
}
return ($urlcount == 0) ? false : $urlcount;
}
/**
* Checks whether a URL can be opened.
*
* if $redirect is specified, will handle Location: redirects.
*
* @param string $url
* @param string $redirect
* @param string $loopsLeft
* @result boolean true if connect successful. otherwise false
* @access private
* @author Minoru TODA <todam@netjapan.co.jp>
* @author Matteo Scaramuccia <matteo@scaramuccia.com>
* @since 2005-08-01
*/
function openURL($url = "", $redirect = "", $redirectCount = 0)
{
global $faqconfig, $PMF_LANG;
// If prequisites fail
if ($this->isReady() == false) {
return array(false, $redirectCount, $PMF_LANG['ad_linkcheck_openurl_notready']);
}
// Recursing too much ?
if (($redirectCount >= LINKVERIFIER_MAX_REDIRECT_COUNT) || ($url == $redirect)) {
return array(false, $redirectCount, sprintf($PMF_LANG['ad_linkcheck_openurl_maxredirect'], LINKVERIFIER_MAX_REDIRECT_COUNT));
}
// If destination is blank, fail.
if (trim($url) == "") {
return array(false, $redirectCount, $PMF_LANG['ad_linkcheck_openurl_urlisblank']);
}
if ($redirect != "") {
$url = $this->makeAbsoluteURL($redirect, $url);
}
// parse URL
$urlParts = @parse_url($url);
foreach(array(
'scheme' => 'http',
'host' => $_SERVER['HTTP_HOST'],
'user' => '',
'pass' => '',
'path' => '/',
'query' => '',
'fragment' => '') as $_key => $_value) {
if (!(isset($urlParts[$_key]))) {
$urlParts[$_key] = $_value;
}
}
if (!(isset($urlParts['port']))) {
switch ($urlParts['scheme']) {
case 'https': $urlParts['port'] = '443'; break;
case 'http': $urlParts['port'] = '80'; break;
default: $urlParts['port'] = '80'; break;
}
}
// Hack: fix any unsafe space chars in any component of the path to avoid HTTP 400 status during HEAD crawling
if ($urlParts['path'] != '') {
$urlSubParts = explode('/', $urlParts['path']);
for ($i = 0; $i < count($urlSubParts); $i++) {
$urlSubParts[$i] = str_replace(' ', '%20', $urlSubParts[$i]);
}
$urlParts['path'] = implode('/', $urlSubParts);
}
if ($urlParts['query'] != "") {
$urlParts['query'] = "?".$urlParts['query'];
}
if ($urlParts['fragment'] != "") {
$urlParts['fragment'] = "#".$urlParts['fragment'];
}
// Check whether we tried the host before
if (isset($this->slow_hosts[$urlParts['host']])) {
return array(false, $redirectCount, sprintf($PMF_LANG['ad_linkcheck_openurl_tooslow'],htmlspecialchars($urlParts['host'])));
}
// Check whether the hostname exists
if (gethostbynamel($urlParts['host']) === false) {
// mark this host too slow to verify
$this->slow_hosts[$urlParts['host']] = true;
return array(false, $redirectCount, sprintf($PMF_LANG['ad_linkcheck_openurl_nodns'], htmlspecialchars($urlParts['host'])));
}
$_response = "";
// open socket for remote server with timeout (default: 5secs)
// PHP 4.3.0+: when compiled w/ OpenSSL support, fsockopen can connect to the remote host using SSL
$_host = $urlParts['host'];
if (@extension_loaded('openssl') && ('https' == $urlParts['scheme'])) {
$_host = 'ssl://'.$_host;
}
$fp = @fsockopen($_host, $urlParts['port'], $errno, $errstr, LINKVERIFIER_CONNECT_TIMEOUT);
if (!$fp) {
// mark this host too slow to verify
$this->slow_hosts[$urlParts['host']] = true;
return array(false, $redirectCount, sprintf($PMF_LANG['ad_linkcheck_openurl_tooslow'],htmlspecialchars($urlParts['host'])));
}
// wait for data with timeout (default: 10secs)
stream_set_timeout($fp, LINKVERIFIER_RESPONSE_TIMEOUT, 0);
$_url = $urlParts['path'].$urlParts['query'].$urlParts['fragment'];
fputs($fp, "HEAD ".$_url." HTTP/1.0\r\nHost: ".$urlParts['host']."\r\n");
// Be polite: let our probe declares itself
fputs($fp, "User-Agent: phpMyFAQ Link Checker\r\n");
fputs($fp, "\r\n");
while (!feof($fp)) { $_response .= fread($fp, 4096); }
fclose($fp);
// parse response
$code = 0;
$allowVerbs = 'n/a';
$httpStatusMsg = '';
$location = $url;
$response = explode("\r\n", $_response);
$httpStatusMsg = strip_tags($response[count($response) - 1]);
foreach ($response as $_response) {
if (preg_match("/^HTTP\/[^ ]+ ([01-9]+) .*$/", $_response, $matches)) {
$code = $matches[1];
}
if (preg_match("/^Location: (.*)$/", $_response, $matches)) {
$location = $matches[1];
}
if (preg_match("/^[a|A]llow: (.*)$/", $_response, $matches)) {
$allowVerbs = $matches[1];
}
}
// process response code
switch ( $code ) {
// TODO: Add more explicit http status management
case '200': // OK
$_reason = ($redirectCount > 0) ? sprintf($PMF_LANG['ad_linkcheck_openurl_redirected'],htmlspecialchars($url)) : "";
return array(true, $redirectCount, $_reason);
break;
case '301': // Moved Permanently (go recursive ?)
case '302': // Found (go recursive ?)
return $this->openURL($url, $location, $redirectCount + 1);
break;
case 400: // Bad Request
return array(false, $redirectCount, sprintf($PMF_LANG['ad_linkcheck_openurl_ambiguous'].'<br />'.$httpStatusMsg, $code));
break;
case 404: // Not found
return array(false, $redirectCount, sprintf($PMF_LANG['ad_linkcheck_openurl_not_found'], $urlParts['host']));
break;
case '300': // Multiple choices
case '401': // Unauthorized (but it's there. right ?)
return array(true, $redirectCount, sprintf($PMF_LANG['ad_linkcheck_openurl_ambiguous'], $code));
break;
case '405': // Method Not Allowed
// TODO: Add a fallback to use GET method, otherwise this link should be marked as bad
return array(true, $redirectCount, sprintf($PMF_LANG['ad_linkcheck_openurl_not_allowed'], $urlParts['host'], $allowVerbs));
break;
default: // All other statuses
return array(false, $redirectCount, sprintf($PMF_LANG['ad_linkcheck_openurl_ambiguous'], $code));
break;
}
return array(false, $redirectCount, '');
}
/**
* Perform link validation to each URLs found
*
* @param string $referenceuri
* @result mixed array of [protocol][url][info] = value
* @access public
* @author Minoru TODA <todam@netjapan.co.jp>
* @since 2005-08-01
*/
function VerifyURLs($referenceuri = '')
{
$this->lastResult = array();
foreach ($this->urlpool as $_type => $_value) {
foreach ($_value as $_key => $_url) {
if (!(isset($result[$_type][$_url]))) {
$_result = array();
$_result['type'] = $_type;
$_result['rawurl'] = $_url;
$_result['reference'] = $referenceuri;
// Expand uri into absolute URL.
$_absurl = $this->makeAbsoluteURL($_url, $referenceuri);
$_result['absurl'] = $_absurl;
// If we should disallow this URL, mark as failed.
if (($_result['reason'] = $this->checkIfForceErrorLink($_absurl)) !== false) {
$_result['valid'] = false;
} else {
// If we should ignore this URL, mark as success
if (($_result['reason'] = $this->checkIfIgnoreLink($_absurl)) !== false) {
$_result['valid'] = true;
} else {
// See whether we can connect to this URL
list($_result['valid'], $_result['redirects'], $_result['reason']) = $this->openURL($_absurl);
}
}
$this->lastResult[$_type][$_url] = $_result;
}
}
}
return $this->lastResult;
}
/**
* logs the current state of link to the specified entry
*
* @param int $id
* @param string $artlang
* @param string $state (optional)
* @result boolean true if operation successful, otherwise false
* @access public
* @author Minoru TODA <todam@netjapan.co.jp>
* @since 2005-09-29
*/
function markEntry($id = 0, $artlang = "", $state = "")
{
if (($id < 1) || (trim($artlang) == "")) {
return false;
}
if ($state == "") {
$state = $this->getLinkStateString();
}
$query = "UPDATE ".SQLPREFIX."faqdata SET links_state = '".$state."', links_check_date = ".time()." WHERE id = ".$id." AND lang='".$artlang."'";
if ($this->db->query($query)) {
return true;
} else {
return false;
}
}
/**
* retrieves the oldest timestamp for stored link validation result
*
* @result int
* @access public
* @author Minoru TODA <todam@netjapan.co.jp>
* @since 2005-09-29
*/
function getURLValidateInterval()
{
global $PMF_CONF;
if (isset($PMF_CONF['main.urlValidateInterval'])) {
return time() - $PMF_CONF['main.urlValidateInterval'];
} else {
return time() - 86400; // default in recheck links once a day unless explicitly requested.
}
}
/**
* retrieves the number of entries that needs the links retested
*
* @result int
* @access public
* @author Minoru TODA <todam@netjapan.co.jp>
* @since 2005-09-29
*/
function getUntestedEntriesCount()
{
$interval = $this->getURLValidateInterval();
$query = "SELECT COUNT(*) FROM ".SQLPREFIX."faqdata WHERE links_check_date < ".$interval;
$result = $this->db->query($query);
$untestedCount = 0;
while ($row = $this->db->fetch_row($result)) {
list($untestedCount) = $row;
}
return $untestedCount;
}
/**
* retrieves stored link state and validates timestamp
*
* @param int $id
* @param string $artlang
* @param boolean $checkDate
* @result mixed false if entry does not exist. true if status expired, otherwise last link state text
* @access public
* @author Minoru TODA <todam@netjapan.co.jp>
* @since 2005-09-29
*/
function getEntryState($id = 0, $artlang = "", $checkDate = false)
{
global $PMF_CONF;
$interval = $this->getURLValidateInterval();
$query = "SELECT links_state, links_check_date FROM ".SQLPREFIX."faqdata WHERE id = ".$id." AND lang='".$artlang."'";
if ($result = $this->db->query($query)) {
while ($row = $this->db->fetch_object($result)) {
$_linkState = $row->links_state;
if (trim($_linkState) == "") {
$_linkState = true;
}
if ($row->links_check_date > $interval) {
return $_linkState;
} else {
if ($checkDate == false) {
return $_linkState;
} else {
return true;
}
}
}
} else {
return false;
}
}
/**
* gets the HTML text that needs to be shown in entry listing
*
* @param int $id
* @param string $artlang
* @result string
* @access public
* @author Minoru TODA <todam@netjapan.co.jp>
* @author Matteo Scaramuccia <matteo@scaramuccia.com>
* @since 2005-09-29
*/
function getEntryStateHTML($id = 0, $artlang = "")
{
global $PMF_LANG;
// Check if feature is disabled.
if ($this->isReady() == false) {
//return '<img src="images/url-disabled.png">';
return '<div class="url-disabled"><span>'.$PMF_LANG['ad_linkcheck_feedback_url-disabled'].'</span></div>';
}
// check if article entry exists (we should not need this)
$src = $this->getEntryState($id, $artlang, false);
if ($src === false) {
//return '<img src="images/url-disabled.png">';
return '<div class="url-disabled"><span>'.$PMF_LANG['ad_linkcheck_feedback_url-disabled'].'</span></div>';
}
if ($src === true) {
$src = "noscript";
}
// define name for javascripting
$imgId = "imgurl_".$artlang."_".$id;
$spanId = "spanurl_".$artlang."_".$id;
$divId = "divurl_".$artlang."_".$id;
$onLoad = '';
if ($this->getEntryState($id, $artlang, true) === true) {
if (LINKVERIFIER_AUTOMATIC_CALL_ON_EDIT_FAQ) {
$onLoad = " onload=\"verifyEntryURL(".$id.",'".$artlang."');\"";
}
}
$output = sprintf('<div id="%s" class="url-%s">'
.'<span id="%s">'
.'<a href="javascript:onDemandVerifyURL(%d,\'%s\');">'
.$PMF_LANG['ad_linkcheck_feedback_url-'.$src].'</a></span>'
.'<img src="images/null.gif" id="%s"%s alt="" />'
.'</div>',
$divId,
$src,
$spanId,
$id,
$artlang,
$imgId,
$onLoad);
return $output;
}
/**
* gets the current status string for link check result
*
* "nolinks" - no links were found in contents
* "linkok" - link(s) were found and were all ok
* "linkbad" - link(s) were found and at least one link was broken
*
* @result string
* @author Minoru TODA <todam@netjapan.co.jp>
* @access public
* @since 2005-09-29
*/
function getLinkStateString()
{
$linkcount = 0;
$errorcount = 0;
foreach ($this->lastResult as $_type => $_value) {
foreach ($_value as $_url => $value) {
$linkcount++;
if ($value['valid'] == false) {
$errorcount++;
}
}
}
if ($linkcount == 0) {
return "nolinks";
} else {
if ($errorcount == 0) {
return "linkok";
} else {
return "linkbad";
}
}
}
/**
* Verifies specified article content and update links_state database entry
*
* @param string $contents
* @param integer $id
* @param string $artlang
* @param boolean $cron
* @result string HTML text, if $cron is false (default)
* @access public
* @author Minoru TODA <todam@netjapan.co.jp>
* @author Matteo Scaramuccia <matteo@scaramuccia.com>
* @since 2005-08-01
*/
function verifyArticleURL($contents = '', $id = 0, $artlang = '', $cron = false)
{
global $PMF_CONF, $PMF_LANG;
if (!(isset($PMF_CONF['main.referenceURL']))) {
$output = $PMF_LANG['ad_linkcheck_noReferenceURL'];
return ($cron ? '' : '<br /><br />'.$output);
}
if (trim('' == $PMF_CONF['main.referenceURL'])) {
$output = $PMF_LANG['ad_linkcheck_noReferenceURL'];
return ($cron ? '' : '<br /><br />'.$output);
}
if ($this->isReady() === false) {
$output = $PMF_LANG['ad_linkcheck_noAllowUrlOpen'];
return ($cron ? '' : '<br /><br />'.$output);
}
// Parse contents and verify URLs
$this->parse_string($contents);
$result = $this->VerifyURLs($PMF_CONF['main.referenceURL']);
$this->markEntry($id, $artlang);
// If no URLs found
if ($result == false) {
$output = '<h2>'.$PMF_LANG['ad_linkcheck_checkResult'].'</h2>';
$output .= '<br />'.$PMF_LANG['ad_linkcheck_noLinksFound'];
return ($cron ? '' : $output);
}
//uncomment to see the result structure
//print str_replace("\n","<br />",htmlspecialchars(print_r($result, true)));
$failreasons = array();
$inforeasons = array();
$output = " <h2>".$PMF_LANG['ad_linkcheck_checkResult']."</h2>\n";
$output .= ' <table class="verifyArticleURL">'."\n";
foreach ($result as $type => $_value) {
$output .= " <tr><td><strong>".htmlspecialchars($type)."</strong></td></tr>\n";
foreach ($_value as $url => $value) {
$_output = ' <td /><td>'.htmlspecialchars($value['rawurl'])."</td>\n";
$_output .= ' <td><a href="'.$value['absurl'].'" target="_blank">'.htmlspecialchars($value['absurl'])."</a></td>\n";
$_output .= ' <td>';
if (isset($value['redirects']) && ($value['redirects'] > 0)) {
$_redirects = "(".$value['redirects'].")";
} else {
$_redirects = "";
}
if ($value['valid'] === true) {
$_classname = "urlsuccess";
$_output .= '<td class="'.$_classname.'">'.$PMF_LANG['ad_linkcheck_checkSuccess'].$_redirects.'</td>';
if ($value['reason'] != "") {
$inforeasons[] = sprintf($PMF_LANG['ad_linkcheck_openurl_infoprefix'],htmlspecialchars($value['absurl'])).$value['reason'];
}
} else {
$_classname = "urlfail";
$_output .= '<td class="'.$_classname.'">'.$PMF_LANG['ad_linkcheck_checkFailed'].'</td>';
if ($value['reason'] != "") {
$failreasons[] = $value['reason'];
}
}
$_output .= '</td>';
$output .= ' <tr class="'.$_classname.'">'."\n".$_output."\n";
$output .= " </tr>\n";
}
}
$output .= " </table>\n";
if (count($failreasons) > 0) {
$output .= " <br />\n <strong>".$PMF_LANG['ad_linkcheck_failReason']."</strong>\n <ul>\n";
foreach ($failreasons as $reason) {
$output .= " <li>".$reason."</li>\n";
}
$output .= " </ul>\n";
}
if (count($inforeasons) > 0) {
$output .= " <br />\n <strong>".$PMF_LANG['ad_linkcheck_infoReason']."</strong>\n <ul>\n";
foreach ($inforeasons as $reason) {
$output .= " <li>".$reason."</li>\n";
}
$output .= " </ul>\n";
}
if ($cron) {
return '';
} else {
return $output;
}
}
/**
* Add new entry into faqlinkverifyrules table
*
* @param string $type
* @param string $url
* @param string $reason
* @return void
* @access public
* @author Thorsten Rinne <thorsten@phpmyfaq.de>
*/
function addVerifyRule($type = '', $url = '', $reason = '')
{
if ($type != '' && $url != '') {
$query = sprintf(
"INSERT INTO
%sfaqlinkverifyrules
(id, type, url, reason, enabled, locked, owner, dtInsertDate, dtUpdateDate)
VALUES
(%d, '%s', '%s', '%s', 'y', 'n', '%s', '%s', '%s')",
SQLPREFIX,
$this->db->nextID(SQLPREFIX."faqlinkverifyrules", "id"),
$this->db->escape_string($type),
$this->db->escape_string($url),
$this->db->escape_string($reason),
$this->db->escape_string($this->user->getLogin()),
$this->db->escape_string(date('YmdHis')),
$this->db->escape_string(date('YmdHis'))
);
$this->db->query($query);
}
}
}
/**
* Prints javascripts needed for AJAX linkverification in record listing
*
* @access public
* @author Minoru TODA <todam@netjapan.co.jp>
* @author Matteo Scaramuccia <matteo@scaramuccia.com>
* @since 2005-08-01
*/
// Client-side Javascript needed for AJAX URL verification
function link_verifier_javascript()
{
global $PMF_LANG;
//TODO: ASSIGN STRINGS FOR THE <IMG ALT="">
$ajaxphp = $_SERVER["PHP_SELF"].'?';
?>
<script type="text/javascript">
<!--
function getImageElement(id, lang)
{
return $('imgurl_' + lang + '_' + id);
}
function getSpanElement(id, lang)
{
return $('spanurl_' + lang + '_' + id);
}
function getDivElement(id, lang)
{
return $('divurl_' + lang + '_' + id);
}
function onDemandVerifyURL(id, lang, target)
{
var target = getSpanElement(id, lang);
var widthPx = 780;
var heigthPx = 450;
var leftPx = (screen.width - widthPx)/2;
var topPx = (screen.height - heigthPx)/2;
Fenster = window.open('<?php print $ajaxphp; ?>&action=ajax&ajax=onDemandURL&id=' + id + '&lang=' + lang, 'onDemandURLVerification', 'toolbar=no, location=no, status=no, menubar=no, width=' + widthPx + ', height=' + heigthPx + ', left=' + leftPx + ', top=' + topPx + ', resizable=yes, scrollbars=yes');
Fenster.focus();
verifyEntryURL(id, lang);
}
function verifyEntryURL(id, lang)
{
//var target = getImageElement(id, lang);
var target = getSpanElement(id, lang);
// !!IMPORTANT!! DISABLE ONLOAD. If you do not do this, you will get infinite loop!
getImageElement(id, lang).onload = "";
//target.src = "images/url-checking.png";
getDivElement(id, lang).className = "url-checking";
target.innerHTML = "<?php print($PMF_LANG['ad_linkcheck_feedback_url-checking']); ?>";
var url = 'index.php';
var pars = 'action=ajax&ajax=verifyURL&id=' + id + '&lang=' + lang;
var myAjax = new Ajax.Request( url, {method: 'get', parameters: pars, onComplete: verifyEntryURL_success, onFailure: verifyEntryURL_failure} );
function verifyEntryURL_success(XmlRequest)
{
//target.src = "images/url-" + XmlRequest.responseText + ".png";
var allResponses = new Array();
allResponses['batch1'] = "<?php print($PMF_LANG['ad_linkcheck_feedback_url-batch1']); ?>";
allResponses['batch2'] = "<?php print($PMF_LANG['ad_linkcheck_feedback_url-batch2']); ?>";
allResponses['batch3'] = "<?php print($PMF_LANG['ad_linkcheck_feedback_url-batch3']); ?>";
allResponses['checking'] = "<?php print($PMF_LANG['ad_linkcheck_feedback_url-checking']); ?>";
allResponses['disabled'] = "<?php print($PMF_LANG['ad_linkcheck_feedback_url-disabled']); ?>";
allResponses['linkbad'] = "<?php print($PMF_LANG['ad_linkcheck_feedback_url-linkbad']); ?>";
allResponses['linkok'] = "<?php print($PMF_LANG['ad_linkcheck_feedback_url-linkok']); ?>";
allResponses['noaccess'] = "<?php print($PMF_LANG['ad_linkcheck_feedback_url-noaccess']); ?>";
allResponses['noajax'] = "<?php print($PMF_LANG['ad_linkcheck_feedback_url-noajax']); ?>";
allResponses['nolinks'] = "<?php print($PMF_LANG['ad_linkcheck_feedback_url-nolinks']); ?>";
allResponses['noscript'] = "<?php print($PMF_LANG['ad_linkcheck_feedback_url-noscript']); ?>";
getDivElement(id, lang).className = "url-" + XmlRequest.responseText;
if (typeof(allResponses[XmlRequest.responseText]) == "undefined") {
getDivElement(id, lang).className = "url-noajax ";
target.innerHTML = allResponses['noajax'];
} else {
target.innerHTML = allResponses[XmlRequest.responseText];
}
}
function verifyEntryURL_failure(XmlRequest)
{
//target.src = "images/url-noaccess.png";
getDivElement(id, lang).className = "url-noaccess";
target.innerHTML = "<?php print($PMF_LANG['ad_linkcheck_feedback_url-noaccess']); ?>";
}
}
//-->
</script>
<?php
}
/**
* Prints javascripts needed for AJAX verification on record add/save/clicked on listing
*
* @param integer $id
* @param string $lang
* @access public
* @author Minoru TODA <todam@netjapan.co.jp>
* @since 2005-08-01
*/
function link_ondemand_javascript($id, $lang) {
?>
<script type="text/javascript">
<!--
function ajaxOnDemandVerify(id, lang)
{
var target = $('onDemandVerifyResult');
var url = 'index.php';
var pars = 'action=ajax&ajax=onDemandURL&id=' + id + '&lang=' + lang + '&lookup=1';
var myAjax = new Ajax.Request( url, {method: 'get', parameters: pars, onComplete: ajaxOnDemandVerify_success, onFailure: ajaxOnDemandVerify_failure} );
//TODO: Assign string
target.innerHTML = 'Querying LinkVerifier...';
function ajaxOnDemandVerify_success(XmlRequest)
{
target.innerHTML = XmlRequest.responseText;
}
function ajaxOnDemandVerify_failure(XmlRequest)
{
//TODO: Assign string
target.innerHTML = 'LinkVerifier failed (url probe timed out?)';
}
}
//-->
</script>
<div id="onDemandVerifyResult">
<NOSCRIPT>LinkVerifier feature disabled (Reason: Javascript not enabled)</NOSCRIPT>
</div>
<script type="text/javascript">
<!--
ajaxOnDemandVerify(<?php print $id; ?>, '<?php print $lang; ?>');
//-->
</script>
<?php
}
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