<?php
/* ------------------------------------------------------------------------------------
*  COPYRIGHT NOTICE
*  Copyright 2016 Arnan de Gans. All Rights Reserved.

*  COPYRIGHT NOTICES AND ALL THE COMMENTS SHOULD REMAIN INTACT.
*  By using this code you agree to indemnify Arnan de Gans and Luke Williamson
*  from any liability that might arise from using this software.
------------------------------------------------------------------------------------ */

/*-------------------------------------------------------------
 Name:      asb_dashboard_styles
 Since:		2.0
-------------------------------------------------------------*/
function asb_dashboard_styles() {
	wp_enqueue_style('asb-admin-stylesheet', plugins_url('library/dashboard.css', __FILE__));
}

/*-------------------------------------------------------------
 Name:      asb_activate
 Since:		2.0
-------------------------------------------------------------*/
function asb_activate() {
	// Defaults
	update_option('asb_subscription', array('status' => 'not_registered'));
	update_option('asb_domains', array('updated' => 0, 'domains' => array()));
	update_option('asb_reports', array());
	update_option('asb_error', false);

	// Set up htaccess
	if((!file_exists(ABSPATH.'.htaccess') AND is_writable(ABSPATH)) OR is_writable(ABSPATH.'.htaccess')) {
		// Edit htaccess
		asb_edit_htaccess();
		// Clean old config (Remove in 3.0 or so)
		asb_clean_htaccess('# BEGIN Analytics Spam Blocker', '# END Analytics Spam Blocker');
	} else {
		// Not writable
		wp_die(_e('Your .htaccess file or root WordPress directory is not writable'));
	}
}

/*-------------------------------------------------------------
 Name:      asb_deactivate
 Since:		2.0
-------------------------------------------------------------*/
function asb_deactivate() {
	// Cancel API subscription
	$subscription = get_option('asb_subscription');
	if($subscription['status'] == 'reg') {
		asb_api_deactivate();
		wp_clear_scheduled_hook('asb_blocklist_update');
	}
	
	// Delete data
	delete_option('asb_subscription');
	delete_option('asb_domains');
	delete_option('asb_reports');
	delete_option('asb_error');

	// Clean .htaccess
	if(is_writable(ABSPATH.'.htaccess')) {
		asb_clean_htaccess('# Analytics Spam Blocker - Start', '# Analytics Spam Blocker - End');
	} else {
		// Not writable
		wp_die(_e('Your .htaccess file is not writable!'));
	}
}

/*-------------------------------------------------------------
 Name:      asb_schedule_updates
 Since:		2.0
-------------------------------------------------------------*/
function asb_schedule_updates() {
	if(!wp_next_scheduled('asb_blocklist_update')) wp_schedule_event(time() + 120, 'daily', 'asb_blocklist_update');
}

/*-------------------------------------------------------------
 Name:      asb_rules
 Since:		2.0
-------------------------------------------------------------*/
function asb_rules() {
	$rules[] = "\n# Analytics Spam Blocker - Start\n";
	$rules[] = "SetEnvIfNoCase Referer semalt.com spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer darodar.com spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer buttons-for-website.com spambot=yes\n";	
	$rules[] = "SetEnvIfNoCase Referer fbdownloader.com spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer descargar-musicas-gratis.com spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer baixar-musicas-gratis.comsavetubevideo.com spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer srecorder.com spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer kambasoft.com spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer ilovevitaly.com spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer ilovevitaly.co spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer ilovevitaly.ru spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer blackhatworth.com spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer priceg.com spambot=yes\n";		
	$rules[] = "SetEnvIfNoCase Referer backgroundpictures.net spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer embedle.com spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer extener.com spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer extener.org spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer fbfreegifts.com spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer feedouble.com spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer feedouble.net spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer japfm.com spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer joinandplay.me spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer joingames.org spambot=yes\n";	
	$rules[] = "SetEnvIfNoCase Referer iskalko.ru spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer musicprojectfoundation.com spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer myprintscreen.com spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer slftsdybbg.ru spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer edakgfvwql.ru spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer openfrost.com spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer openfrost.net spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer openmediasoft.com spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer serw.clicksor.com spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer socialseet.ru spambot=yes\n";	
	$rules[] = "SetEnvIfNoCase Referer sharebutton.net spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer cityadspix.com spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer screentoolkit.com spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer softomix.com spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer softomix.net spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer softomix.ru spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer gobongo.info spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer myftpupload.com spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer websocial.me spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer luxup.ru spambot=yes\n";		
	$rules[] = "SetEnvIfNoCase Referer ykecwqlixx.ru spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer soundfrost.org spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer seoexperimenty.ru spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer cenokos.ru spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer star61.de spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer superiends.org spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer vapmedia.org spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer econom.co spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer vodkoved.ru spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer adcash.com spambot=yes\n";	
	$rules[] = "SetEnvIfNoCase Referer videofrost.com spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer youtubedownload.org spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer zazagames.org spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer 7makemoneyonline.com spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer ranksonic.info spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer yougetsignal.com spambot=yes\n";	
	$rules[] = "SetEnvIfNoCase Referer cenoval.ru spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer simple-share-buttons.com spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer o-o-6-o-o.com spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer o-o-8-o-o.com spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer s.click.aliexpress.com spambot=yes\n";		
	$rules[] = "SetEnvIfNoCase Referer social-buttons.com spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer best-seo-offer.com spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer best-seo-solution.com spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer buttons-for-your-website.com spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer www.get-free-traffic-now.com spambot=yes\n";
	$rules[] = "SetEnvIfNoCase Referer free-share-buttons.co spambot=yes\n";
	
	$rules[] = "Order allow,deny\n";
	$rules[] = "Allow from all\n";
	$rules[] = "Deny from env=spambot\n";
	$rules[] = "# Analytics Spam Blocker - End";
	
	return $rules;
}

/*-------------------------------------------------------------
 Name:      asb_edit_htaccess
 Since:		2.0
-------------------------------------------------------------*/
function asb_edit_htaccess($rules = false) {
	// Defaults
	$formatted = false;
	$file_content = $new_rules = array();
	
	// Remove current rules
	asb_clean_htaccess('# Analytics Spam Blocker - Start', '# Analytics Spam Blocker - End');

	// Read current file without rules
	if(file_exists(ABSPATH.'.htaccess')){
		$file_content = file(ABSPATH.'.htaccess');			
	}
	
	// Format downloaded rules if any
	if($rules) {
		$formatted[] = "\n# Analytics Spam Blocker - Start\n";
		foreach($rules as $rule) {
			$formatted[] = "SetEnvIfNoCase Referer $rule spambot=yes\n";
		}	
		$formatted[] = "Order allow,deny\n";
		$formatted[] = "Allow from all\n";
		$formatted[] = "Deny from env=spambot\n";
		$formatted[] = "# Analytics Spam Blocker - End";
	}

	$new_rules = (!is_array($formatted)) ? asb_rules() : $formatted;
	$lines = array_merge($file_content, $new_rules);
	unset($file_content, $new_rules);
	
	// Write new rules
	$fp = fopen(ABSPATH.'.htaccess', 'w');
	foreach($lines as $line){
		fwrite($fp, "$line");
	}
	fclose($fp);
	unset($fp);
}

/*-------------------------------------------------------------
 Name:      asb_clean_htaccess
 Since:		2.0
-------------------------------------------------------------*/
function asb_clean_htaccess($start, $end) {
	$file_content = file_get_contents(ABSPATH.'.htaccess');
	$beginning_position = strpos($file_content, $start);
	$ending_position = strpos($file_content, $end);

	if($beginning_position !== false AND $ending_position !== false) {
		$delete_old = substr($file_content, $beginning_position, ($ending_position + strlen($end)) - $beginning_position);
		$clean_content = str_replace($delete_old, '', $file_content);
		
		$fp = fopen(ABSPATH.'.htaccess', 'w');
		fwrite($fp, $clean_content);
		fclose($fp);

		unset($delete_old, $clean_content, $fp);
	}
	unset($file_content);
}

/*-------------------------------------------------------------
 Name:      asb_return
 Since:		2.0
-------------------------------------------------------------*/
function asb_return($page, $status, $args = null) {

	if(strlen($page) > 0 AND ($status > 0 AND $status < 1000)) {
		$defaults = array(
			'status' => $status
		);
		$arguments = wp_parse_args($args, $defaults);
		$redirect = 'tools.php?page=' . $page . '&'.http_build_query($arguments);
	} else {
		$redirect = 'tools.php?page=analytics-spam-blocker';
	}

	wp_redirect($redirect);
}

/*-------------------------------------------------------------
 Name:      asb_status
 Since:		2.0
-------------------------------------------------------------*/
function asb_status($status) {

	$error = get_option('asb_error');

	$before = '';
	$between = '';
	$after = '</span></div><div class="icon"><img title="Analytics Spam Blocker Logo" width="60" src="'.plugins_url('/images/icon-report.png', __FILE__).'" alt=""/></div></div>';

	switch($status) {
		case '200' :
			echo '<div class="updated" style="padding: 0; margin: 0;"><div class="ajdg_notification"><div class="text">'.__('Website registered and update schedule set!', 'analytics-spam-blocker').'<br /><span>'.__('The blocklist will be updated every day in the background. If you notice referral spam domains in your analytics please report them!', 'analytics-spam-blocker').'</span></div><div class="icon"><img title="Analytics Spam Blocker Logo" width="60" src="'.plugins_url('/images/icon-report.png', __FILE__).'" alt=""/></div></div></div>';
		break;

		case '201' :
			echo '<div class="updated" style="padding: 0; margin: 0;"><div class="ajdg_notification"><div class="text">'.__('Thank you for your report!', 'analytics-spam-blocker').'<br /><span>'.__('When the domain gets a few reports it will be included in the blocklist so others will benefit from your efforts.', 'analytics-spam-blocker').'</span></div><div class="icon"><img title="Analytics Spam Blocker Logo" width="60" src="'.plugins_url('/images/icon-report.png', __FILE__).'" alt=""/></div></div></div>';
		break;

		case '400' :
			if($error) {
				$status = (isset($error['status'])) ? $error['status'] : 'Error';
				$text = (isset($error['error'])) ? $error['error'] : 'Unknown';
			}
			echo '<div class="error"><p>'.__('Something went wrong registering your website. Please review the error below and try again.', 'analytics-spam-blocker').'</p><p>'.$status.' - '.$text.'</p></div>';
		break;

		case '401' :
			echo '<div class="error"><p>'.__('Your name, email address and a referral domain name are required. Please try again.', 'analytics-spam-blocker').'</p></div>';
		break;
		
		case '402' :
			echo '<div class="error"><p>'.__('Something went wrong reporting the domain. Please try again.', 'analytics-spam-blocker').'</p></div>';
		break;
		
		default :
			echo '<div class="error"><p>'.__('Unexpected error', 'analytics-spam-blocker').'</p></div>';
		break;
	}
	
	unset($arguments, $args);
}

/*-------------------------------------------------------------
 Name:      asb_nonce_error
 Purpose:   Display a formatted error if Nonce fails
 Since:		2.0
-------------------------------------------------------------*/
function asb_nonce_error() {
	echo '	<h2 style="text-align: center;">'.__('Oh no! Something went wrong!', 'analytics-spam-blocker').'</h2>';
	echo '	<p style="text-align: center;">'.__('WordPress was unable to verify the authenticity of the url you have clicked. Verify if the url used is valid or log in via your browser.', 'analytics-spam-blocker').'</p>';
	echo '	<p style="text-align: center;">'.__('If you have received the url you want to visit via email, you are being tricked!', 'analytics-spam-blocker').'</p>';
	echo '	<p style="text-align: center;">'.__('Contact support if the issue persists:', 'analytics-spam-blocker').' <a href="https://ajdg.solutions/forums/?utm_campaign=forums&utm_medium=nonce-error&utm_source=analytics-spam-blocker" title="AJdG Solutions Support" target="_blank">AJdG Solutions Support</a>.</p>';
}
?>