/**
* Check to see if this impression contains the valid referrer.
*
* @param string $limitation The referrer limitation
* @param string $op The operator (either '==' or '!=')
* @param array $aParams An array of additional parameters to be checked
* @return boolean Whether this impression's referrer passes this limitation's test.
*/
function MAX_checkSite_Referingpage($limitation, $op, $aParams = array())
{
if ($limitation == '') {
return true;
}
$url = empty($aParams) ? $GLOBALS['referer'] : $aParams['referer'];
return MAX_limitationsMatchStringValue($url, $limitation, $op);
}
/**
* The utility function which checks if the value in the parameters
* in the request for an ad fulfill the requirements of delivery limitation.
* This function checks string values.
* The parameters are looked in the $aParam array. If the $aParam array
* is empty or unspecified, then $GLOBALS['_MAX']['$namespace'] array
* is used instead.
*
* @param string $paramName Name of the parameter to look for in an array.
* @param string $limitation Value to be matched with.
* @param string $op The operator used to compare strings.
* @param string $aParams The array in which the value is looked for.
* @param string $namespace The namespace in the $GLOBALS['_MAX'] array used
* if when $aParams is empty.
* @return boolean True if the parameters fulfill the limitations, false
* otherwise.
* @see MAX_limitationsMatchStringClientGeo
* @see MAX_limitationsMatchStringValue
*/
function MAX_limitationsMatchString($paramName, $limitation, $op, $aParams = array(), $namespace = 'CLIENT')
{
if ($limitation == '') {
return true;
}
if (empty($aParams)) {
$aParams = $GLOBALS['_MAX'][$namespace];
}
$value = $aParams[$paramName];
return MAX_limitationsMatchStringValue($value, $limitation, $op);
}
/**
* Check to see if this impression contains the valid domain.
*
* @param string $limitation The domain limitation.
* @param string $op The string operator.
* @param array $aParams An array of additional parameters to be checked.
* @return boolean Whether this impression's domain passes this limitation's test.
*/
function MAX_checkClient_Domain($limitation, $op, $aParams = array())
{
if (empty($aParams)) {
$aParams = $GLOBALS['_MAX']['CLIENT'];
}
if ($limitation == '') {
return true;
}
$host = $_SERVER['REMOTE_HOST'];
if (MAX_limitationsIsOperatorRegexp($op)) {
$domain = $host;
} else {
$domain = substr($host, -strlen($limitation));
}
return MAX_limitationsMatchStringValue($domain, $limitation, $op);
}
/**
* Check to see if this impression contains the valid city.
*
* @param string $limitation The city (or comma list of cities) limitation
* @param string $op The operator (either '==' or '!=')
* @param array $aParams An array of additional parameters to be checked
* @return boolean Whether this impression's city passes this limitation's test.
*/
function MAX_checkGeo_City($limitation, $op, $aParams = array())
{
if (empty($aParams)) {
$aParams = $GLOBALS['_MAX']['CLIENT_GEO'];
}
if ($aParams && $aParams['city'] && $aParams['country_code']) {
$aLimitation = array(substr($limitation, 0, strpos($limitation, '|')), substr($limitation, strpos($limitation, '|') + 1));
$sCities = $aLimitation[1];
if (!empty($aLimitation[0])) {
return MAX_limitationsMatchStringValue($aParams['country_code'], $aLimitation[0], '==') && MAX_limitationsMatchArrayValue($aParams['city'], $sCities, $op);
} else {
return MAX_limitationsMatchArrayValue($aParams['city'], $sCities, $op);
}
} else {
return false;
// If client has no data about city, do not show the ad
}
}
/**
* Check to see if this impression contains the valid region.
*
* @param string $limitation The region (or comma list of regions) limitation
* @param string $op The operator (either '==' or '!=')
* @param array $aParams An array of additional parameters to be checked
* @return boolean Whether this impression's region passes this limitation's test.
*/
function MAX_checkGeo_Region($limitation, $op, $aParams = array())
{
if (empty($aParams)) {
$aParams = $GLOBALS['_MAX']['CLIENT_GEO'];
}
if ($op != '=~' && $op != '!~') {
// Provide backwards compatibility
$op = '=~';
}
$aLimitation = explode('|', $limitation);
$sCountry = $aLimitation[0];
$sRegions = $aLimitation[1];
if ($aParams && $aParams['region'] && $aParams['country_code']) {
return MAX_limitationsMatchStringValue($aParams['country_code'], $sCountry, '==') && MAX_limitationsMatchArrayValue($aParams['region'], $sRegions, $op);
} else {
return false;
// Do not show the ad if user has no data about region and country.
}
}