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lpchatpage.php
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lpchatpage.php
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<?php
/**
* A webpage in a website tagged for LP Chat
*
* @author [email protected]
* @version 1.0
*
* @todo allow for mis-coded pages where there is more than one value for lpUnit, lpLanguage, and mtagconfig.js
* @todo reduce processing time by passing the $node array by reference rather than doing a $domxpath->query("//script") each time
*/
class lpchatpage {
/**
* URL of page
*
* @var string page's URL
*/
private $page_url;
/**
* URL of mtagconfig.js file
*
* @var string URL of mtagconfig.js file
*/
private $mtagconfig_url;
/**
* Site ID
*
* @var string Site ID of the page's given mtagconfig.js file
* @see lpchatpage::$mtagconfig_url
*/
private $site_id;
/**
* lpUnit
*
* @var string page's given lpUnit
* @todo test for >1 given value
*/
private $lpunit;
/**
* lpLanguage
*
* @var string page's given lpLanguage
* @todo test for >1 given value
*/
private $lplanguage;
/**
* Array of lpAddVars(<scope>,<name>,<value>)
*
* @var array lpAddVars calls on the webpage
*/
private $lpaddvarss = array();
/**
* Array of lpSendData(<scope>,<name>,<value>)
*
* @var array lpSendData calls on the webpage
*/
private $lpsenddatas = array();
/**
* XPath of HTML page
*
* @var object XPath representing the page
*/
private $domxpath;
/**
* Given a URL, understand it from a LPSN POV
*
* @param string URL of the webpage
* @todo check the Site ID given at each mtagconfig.js
*/
function __construct($webpage_url) {
$this->set_page_url($webpage_url);
$this->set_DOMXPath($this->get_page_url());
/* read page */
/* extract mtagconfig link */
$this->set_mtagconfigurl($this->extract_mtagconfigurl($this->get_DOMXPath()));
/* extract lpUnit value */
$this->set_lpunit($this->extract_lpunit($this->get_DOMXPath()));
/* extract lpLanguage value */
$this->set_lplanguage($this->extract_lplanguage($this->get_DOMXPath()));
/* extract all lpAddVars arguments */
$this->set_lpaddvars($this->extract_lpaddvars($this->get_DOMXPath()));
/* extract all lpSendData arguments */
$this->set_lpsenddata($this->extract_lpsenddata($this->get_DOMXPath()));
}
/* extractors */
/**
* Extract the lpUnit given on a webage
*
* @param string text in which to look for the value of lpUnit
* @return string the lpUnit value
*/
function extract_lpunit($domxpath) {
$lpunit = "not found";
$text = null;
foreach ($domxpath->query("//script") as $node) {
$text = $node->nodeValue;
if (stripos($text, "lpUnit") > 0) {
/* needle is surrounded by "quotes" */
if (($needleEnd = stripos($text, 'lpunit="') + 8) > 8) {
$lpunit = substr($text, $needleEnd, strpos($text, "\"", $needleEnd) - $needleEnd);
}
/* needle is surrounded by 'apostrophes' */
else if (($needleEnd = stripos($text, "lpunit='") + 8) > 8) {
$lpunit = substr($text, $needleEnd, strpos($text, "'", $needleEnd) - $needleEnd);
}
break;
}
}
return $lpunit;
}
/**
* Extract the lpLanguage given on a webage
*
* @param object DOM XPath of webpage
* @return string the lpLanguage value
*/
function extract_lplanguage($domxpath) {
$lplanguage = "not found";
$text = null;
foreach ($domxpath->query("//script") as $node) {
$text = $node->nodeValue;
if (stripos($text, "lpLanguage") > 0) {
/* needle is surrounded by "quotes" */
if (($needleEnd = stripos($text, 'lplanguage="') + 12) > 12) {
$lplanguage = substr($text, $needleEnd, strpos($text, '"', $needleEnd) - $needleEnd);
}
/* needle is surrounded by 'apostrophes' */
else if (($needleEnd = stripos($text, "lpLanguage='") + 12) > 12) {
$lplanguage = substr($text, $needleEnd, strpos($text, "'", $needleEnd) - $needleEnd);
}
break;
}
}
return $lplanguage;
}
/**
* Extract the mtagconfigurl given on a webage
*
* @todo check for more than 1 mtagconfig.js file
*
* @param object DOM XPath in which to look for the URL of the mtagconfig.js file
* @return string the URL of the mtagconfig.js file
*/
function extract_mtagconfigurl($domxpath) {
$mtagconfigurl = "not found";
$src = null;
foreach ($domxpath->query("//script") as $node) {
$src = $node->getAttribute("src");
if (strpos($src, "mtagconfig.js") > 0) {
$mtagconfigurl = $src;
break;
}
}
return $mtagconfigurl;
}
/**
* Extract lpAddVars given on a webage
*
* @param object DOM XPath of webpage
* @return array lpAddVars values
*/
function extract_lpaddvars($domxpath) {
$lpaddvars = array();
/* check in script areas */
$text = null;
foreach ($domxpath->query("//script") as $node) {
$text = $node->nodeValue;
/* add an lpAddVars object from the text wherever the case-insensitive string "lpAddVars" is found */
$offset = 0;
while (($offset = stripos($text, "lpaddvars", $offset) + 10) > 10) {
$lpaddvars[] = lpchatvariable::MakeFromSignature(substr($text, $offset, strpos($text, ")", $offset) - $offset));
}
}
/* check each element's attributes */
// unnecessary since lpAddVars only works during the initial layout
return $lpaddvars;
}
/**
* Extract lpSendData given on a webage
*
* @param object DOM XPath of webpage
* @return array lpSendData values
*/
function extract_lpsenddata($domxpath) {
$lpsenddata = array();
/* check in script areas */
$text = null;
$offset = null;
foreach ($domxpath->query("//script") as $node) {
$text = $node->nodeValue;
/* add an lpSendData object from the text wherever the case-insensitive string "lpSendData" is found */
while (($offset = stripos($text, "lpsenddata", $offset) + 11) > 11) {
$lpsenddata[] = lpchatvariable::MakeFromSignature(substr($text, $offset, strpos($text, ")", $offset) - $offset));
}
$offset = 0;
}
/* check each element's attributes */
$text = null;
foreach ($domxpath->query('//*[@*[contains(translate(.,"LPSENDDATA","lpsenddata"),"lpsenddata")]]') as $node) {
foreach ($node->attributes as $attrName => $attrNode) {
$text = $attrNode->value;
if (stripos($text, "lpsenddata") !== FALSE) { // only strings that contain "lpsenddata"
//$matches = [lL][pP][sS][eE][nN][dD][dD][aA][tT][aA]\(['\"][a-zA-Z0-9]*['\"],['\"][a-zA-Z0-9]*['\"],['\"][a-zA-Z0-9]*['\"]\)",$text, $matches);
foreach (explode(";", $text) as $key => $value) {
if (stripos($value, "lpsenddata") !== FALSE) { // only substrings that contain "lpsenddata"
$lpsenddata[] = lpchatvariable::MakeFromSignature($value);
}
}
}
}
}
return $lpsenddata;
}
/* setters */
function set_page_url($page_url) {
$this->page_url = $page_url;
}
function set_mtagconfigurl($mtagconfig_url) {
$this->mtagconfig_url = $mtagconfig_url;
}
function set_lpunit($lpunit) {
$this->lpunit = $lpunit;
}
function set_lplanguage($lplanguage) {
$this->lplanguage = $lplanguage;
}
/**
* @param object array of lpAddVars objects
*/
function set_lpaddvars($lpaddvars) {
$this->lpaddvarss = $lpaddvars;
}
/**
* @param object an lpAddVars object
*/
function add_lpaddvars($lpAddVars) {
$this->lpaddvarss[] = $lpAddVars;
}
/**
* @param object array of lpsenddata objects
*/
function set_lpsenddata($lpsenddata) {
$this->lpsenddatas = $lpsenddata;
}
/**
* @param object an lpsenddata object
*/
function add_lpsenddata($lpsenddata) {
$this->lpsenddatas[] = $lpsenddata;
}
function set_DOMXPath($url) {
$dom = new DOMDocument();
@$dom->loadHTMLFile($url);
$this->dOMXPath = new DOMXPath($dom);
}
/* getters */
/**
* @return pointer to a DOM XPath object
*/
function &get_DOMXPath() {
return $this->dOMXPath;
}
function get_page_url() {
return $this->page_url;
}
function get_lpunit() {
return $this->lpunit;
}
function get_lplanguage() {
return $this->lplanguage;
}
function get_lpaddvarss() {
return $this->lpaddvarss;
}
function get_lpsenddatas() {
return $this->lpsenddatas;
}
function get_mtagconfigurl() {
return $this->mtagconfig_url;
}
}
?>