/**
*
* Determines if the current request appears to be from a bot
*/
public static function isRequestFromBot()
{
if (BotChecker::$isBot == null) {
global $logger;
global $timer;
global $memCache;
global $configArray;
$userAgent = $_SERVER['HTTP_USER_AGENT'];
$isBot = $memCache->get("bot_by_user_agent_" . $userAgent);
if ($isBot === FALSE) {
global $serverName;
if (file_exists('../../sites/' . $serverName . '/conf/bots.ini')) {
$fhnd = fopen('../../sites/' . $serverName . '/conf/bots.ini', 'r');
} elseif (file_exists('../../sites/default/conf/bots.ini')) {
$fhnd = fopen('../../sites/default/conf/bots.ini', 'r');
} else {
$logger->log("Did not find bots.ini file, cannot detect bots", PEAR_LOG_ERR);
return false;
}
$isBot = false;
while (($curAgent = fgets($fhnd, 4096)) !== false) {
//Remove line separators
$curAgent = str_replace("\r", '', $curAgent);
$curAgent = str_replace("\n", '', $curAgent);
if (strcasecmp($userAgent, $curAgent) == 0) {
$isBot = true;
break;
}
}
fclose($fhnd);
$memCache->set("bot_by_user_agent_" . $userAgent, $isBot ? 'TRUE' : 'FALSE', 0, $configArray['Caching']['bot_by_user_agent']);
if ($isBot) {
$logger->log("{$userAgent} is a bot", PEAR_LOG_DEBUG);
} else {
$logger->log("{$userAgent} is not a bot", PEAR_LOG_DEBUG);
}
BotChecker::$isBot = $isBot;
} else {
//$logger->log("Got bot info from memcache $isBot", PEAR_LOG_DEBUG);
BotChecker::$isBot = $isBot === 'TRUE';
}
$timer->logTime("Checking isRequestFromBot");
}
return BotChecker::$isBot;
}
