<?php
/* ------------------------------------------------------------------------------------
*  COPYRIGHT NOTICE
*  Copyright 2016-2019 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_stats', array('active_subscribers' => 'n/a', 'active_sites' => 'n/a', 'reported_sites' => 'n/a', 'reports_submitted' => 'n/a', 'reports_user' => 'n/a'));
	update_option('asb_error', false);
	update_option('asb_hide_review', current_time('timestamp'));
	update_option('asb_hide_register', current_time('timestamp'));

	// 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'); // Obsolete
	delete_option('asb_stats');
	delete_option('asb_error');
	delete_option('asb_hide_review');
	delete_option('asb_hide_register');

	// 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_check_config
 Purpose:   Verify or reset settings
 Since:		2.5
-------------------------------------------------------------*/
function asb_check_config() {
	$two_days = current_time('timestamp') + (2 * 86400);

	$review = get_option('asb_hide_review');
	if(!$review) update_option('asb_hide_review', $two_days);
	
	$register = get_option('asb_hide_register');
	if(!$register) update_option('asb_hide_register', $two_days);
}

/*-------------------------------------------------------------
 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\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\n";
	
	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) {
		$formatted[] = "\n\n# Analytics Spam Blocker - Start\n";
		foreach($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\n";
	}

	$new_rules = (!is_array($formatted)) ? asb_rules() : $formatted; // Use original rules if there is nothing else.
	$lines = array_merge($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); // Determine what to delete

		$clean_content = str_replace($delete_old, '', $file_content); // Remove current/old rules
		$clean_content = trim($clean_content, " \t\n\r"); // Remove stray crap at the end of the file
		
		$fp = fopen(ABSPATH.'.htaccess', 'w');
		fwrite($fp, $clean_content);
		fclose($fp);

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

/*-------------------------------------------------------------
 Name:      asb_notifications_dashboard
 Since:		2.1
-------------------------------------------------------------*/
function asb_notifications_dashboard() {
	if(isset($_GET['hide'])) {
		if($_GET['hide'] == 1) update_option('asb_hide_review', 1);
		if($_GET['hide'] == 2) update_option('asb_hide_register', 1);
	}

	$review_banner = get_option('asb_hide_review');
	if($review_banner != 1 AND $review_banner < (current_time('timestamp') - 1214600)) {
		echo '<div class="updated" style="padding: 0; margin: 0;">';
		echo '	<div class="ajdg_asb_notification">';
		echo '		<div class="button_div"><a class="button" target="_blank" href="https://wordpress.org/support/plugin/analytics-spam-blocker/reviews?rate=5#postform">Rate Plugin</a></div>';
		echo '		<div class="text">If you like <strong>Analytics Spam Blocker</strong> let the world know that you do. Thanks for your support!<br /><span>If you have questions, suggestions or something else that doesn\'t belong in a review, please <a href="https://ajdg.solutions/forums/forum/analytics-spam-blocker/" target="_blank">get in touch</a>!</span></div>';
		echo '		<a class="close_notification" href="tools.php?page=analytics-spam-blocker&hide=1"><img title="Close" src="'.plugins_url('/images/icon-close.png', __FILE__).'" alt=""/></a>';
		echo '		<div class="icon"><img title="Logo" src="'.plugins_url('/images/ajdg-logo.png', __FILE__).'" alt=""/></div>';
		echo '	</div>';
		echo '</div>';
	}

	$register_banner = get_option('asb_hide_register');
	$is_reg = get_option('asb_subscription');
	if($register_banner != 1 AND $register_banner < (current_time('timestamp') - 259300) AND $is_reg['status'] != 'reg') {
		echo '<div class="updated" style="padding: 0; margin: 0;">';
		echo '	<div class="ajdg_asb_notification">';
		echo '		<div class="button_div"><a class="button" href="tools.php?page=analytics-spam-blocker">Register Plugin</a></div>';
		echo '		<div class="text">You\'re using <strong>Analytics Spam Blocker</strong> but have not registered for updates!<br /><span>Registering your website will enable the plugin to get new domains daily and unlocks the reporting tool in your dashboard!</span></div>';
		echo '		<a class="close_notification" href="tools.php?page=analytics-spam-blocker&hide=2"><img title="Close" src="'.plugins_url('/images/icon-close.png', __FILE__).'" alt=""/></a>';
		echo '		<div class="icon"><img title="Logo" src="'.plugins_url('/images/ajdg-logo.png', __FILE__).'" alt=""/></div>';
		echo '	</div>';
		echo '</div>';
	}
}

/*-------------------------------------------------------------
 Name:      asb_help_info
 Purpose:   Help tab on all pages
 Since:		2.5
-------------------------------------------------------------*/
function asb_help_info() {
    $screen = get_current_screen();

    $screen->add_help_tab(array(
        'id' => 'asb_reports',
        'title' => __('Why report spam'),
        'content' => '<h4>Why report Referral Spam?</h4>'.
        	'<p>We all want accurate and true analytics for our websites. With the growing trend of Analytics Referral Spam monitoring analytics can be a cumbersome and misleading affair. Analytics dashboards such as those from Google Analytics are increasingly irrelevant if you do not counter against spam domains showing up in your referrals. Your reports are important to combat referral spam!</p>'.
        	'<h4>What happens to reported domains?</h4>'.
        	'<p>Analytics Spam Blocker has a unique system to report referral spam straight from your dashboard. This makes it really easy to report and get rid of referral spam domains. Simply enter the domain name, indicate how sure you are of the domain being spam and click report. After a few people report the domain it will be distributed to all users of Analytics Spam Blocker every 24 hours.</p>'.
			'<p><strong>'.__('Need help?', 'analytics-spam-blocker').'</strong> <a href="https://ajdg.solutions/forums/" target="_blank">'.__('Support Forum', 'analytics-spam-blocker').'</a> & <a href="https://ajdg.solutions/contact/" target="_blank">'.__('Contact Form', 'analytics-spam-blocker').'</a>.</p>'
	));
    $screen->add_help_tab(array(
        'id' => 'asb_thanks',
        'title' => 'Thank You',
        'content' => '<h4>Thank you for using Analytics Spam Blocker</h4><p>Analytics Spam Blocker is growing to be a popular WordPress plugins for protecting your website. Analytics Spam Blocker wouldn\'t be possible without your support and my life wouldn\'t be what it is today without your help.</p><p><em>- Arnan</em></p>'.
        '<p><strong>Add me:</strong> <a href="https://www.facebook.com/adegans/" target="_blank">Facebook</a>, <a href="https://www.linkedin.com/in/arnandegans/" target="_blank">LinkedIn</a> <strong>More Plugins:</strong> <a href="https://ajdg.solutions/" target="_blank">ajdg.solutions</a> <strong>Arnan\'s Site:</strong> <a href="https://www.arnan.me/" target="_blank">arnan.me</a></p>'
	));
}

/*-------------------------------------------------------------
 Name:      asb_action_links
 Since:		2.7.1
-------------------------------------------------------------*/
function asb_action_links($links) {
	$custom_actions = array();
	$custom_actions['asb-help'] = sprintf('<a href="%s" target="_blank">%s</a>', 'https://ajdg.solutions/support/', 'Support');
	$custom_actions['asb-arnan'] = sprintf('<a href="%s" target="_blank">%s</a>', 'https://www.arnan.me/', 'arnan.me');

	return array_merge($custom_actions, $links);
}

/*-------------------------------------------------------------
 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_asb_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_asb_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 everyone 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;
		
		case '403' :
			echo '<div class="error"><p>'.__('The domain you are trying to report is not valid. Please try again.', 'analytics-spam-blocker').'</p></div>';
		break;
		
		case '403' :
			echo '<div class="error"><p>'.__('Please use your valid email address', '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>';
}
?>