moecdn.php

<?php
/**
 * @package MoeCDN
 * @version 1.5
 */
/*
	Plugin Name: MoeNet Public CDN
	Plugin URI: http://cdn.moefont.com/
	Description: 加速Gravatar/GoogleAPIs/WordPress.com等由于众所周知的原因而在中国无法访问的资源
	Author: MoeNet Inc.
	Version: 1.5
	Author URI: http://www.moenetwork.com
*/

class MoeCDN {
	protected static $options;

	public static function init() {
		self::$options = get_option('moecdn_options');
		if (!isset(self::$options['isset']) || !self::$options['isset']) {
			self::reset_options();
		}
		self::hook();
	}

	protected static function hook() {
		register_activation_hook(__FILE__, array('MoeCDN', 'after_activate'));
		add_action('admin_init', array('MoeCDN', 'redirect'));

		add_action('admin_init', array('MoeCDN', 'options_init'));
		add_action('admin_menu', array('MoeCDN', 'options_menu'));
		add_filter('plugin_action_links_' . plugin_basename(__FILE__), array('MoeCDN', 'action_links'));

		if (get_option("moecdn_collect")) {
			add_action('admin_footer', array('MoeCDN', 'collect'));
		}

		add_action('init', array('MoeCDN', 'buffer_start'));
		add_filter('get_avatar', array('MoeCDN', 'replace_gravatar'));
	}

	// 缓冲替换输出
	public static function buffer_start() {
		ob_start(array('MoeCDN', 'replace'));
	}
	// 替换内容
	public static function replace($content) {
		if (self::$options['googleapis']) {
			$content = preg_replace("/(<link.+?href=[\"'](http:|https:|))\/\/fonts.googleapis.com\/css(\?[0-9A-Za-z=&#;_%\.\-\+\|]+[\"'].*?>)/i", "$1//cdn.moefont.com/fonts/css$3", $content);
			$content = preg_replace("/(<link.+?href=[\"'](http:|https:|))\/\/ajax.googleapis.com\/([0-9A-Za-z._\-\/]+[\"'].*?>)/i", "$1//ajax.googleapis.com/$3", $content);
			$content = preg_replace("/(<script.+?src=[\"'](http:|https:|))\/\/ajax.googleapis.com\/([0-9A-Za-z._\-\/]+[\"'].*?>)/i", "$1//ajax.googleapis.com/$3", $content);
		}

		if (self::$options['worg']) {
			$content = str_replace(array("\\/\\/s.w.org"), "\\/\\/cdn.moefont.com\\/worg", $content);
			$content = str_replace(array("//s.w.org"), "//cdn.moefont.com/worg", $content);
		}

		if (self::$options['wpcom']) {
			$content = str_replace(array("//s0.wp.com", "//s1.wp.com"), "//cdn.moefont.com/wpcom", $content);
			$content = str_replace(array("\\/\\/pixel.wp.com"), "\\/\\/cdn.moefont.com\\/pixelwpcom", $content);
		}

		return $content;
	}
	// 替换头像
	public static function replace_gravatar($avatar) {
		if (self::$options['gravatar']) {
			$avatar = str_replace(array("//gravatar.com", "//secure.gravatar.com", "//www.gravatar.com", "//0.gravatar.com", "//1.gravatar.com", "//2.gravatar.com", "//cn.gravatar.com"), "//gravatar.moefont.com", $avatar);
		}
		return $avatar;
	}

	// 设置页面
	public static function action_links($links) {
		$links[] = '<a href="'. esc_url(get_admin_url(null, 'options-general.php?page=moecdn')) .'">' . __('Settings') . '</a>';
		$links[] = '<a href="http://cdn.moefont.com" target="_blank">支持</a>';
		return $links;
	}
	protected static function reset_options() {
		self::$options = array(
			'gravatar' => false,
			'googleapis' => false,
			'worg' => false,
			'wpcom' => false,

			'isset' => true
		);
		update_option('moecdn_options', self::$options);
	}
	protected static function save_options() {
		self::$options = array(
			'gravatar' => $_POST['gravatar'],
			'googleapis' => $_POST['googleapis'],
			'worg' => $_POST['worg'],
			'wpcom' => $_POST['wpcom'],

			'isset' => true
		);
		update_option('moecdn_options', self::$options);
		update_option('moecdn_collect', $_POST['collect']);
	}
	public static function options_init() {
		if (isset($_POST['submit'])) {
			self::save_options();
			add_settings_error('moecdn_options', 'moecdn_options-updated', __('Settings saved.'), 'updated');
		} elseif (isset($_POST['reset'])) {
			self::reset_options();
			add_settings_error('moecdn_options', 'moecdn_options-reseted', __('Settings reseted.'), 'updated');
		}
	}
	public static function options_menu() {
		add_options_page('MoeCDN 设置', 'MoeCDN', 'manage_options', 'moecdn', array('MoeCDN', 'options_display'));
	}
	public static function options_display() {
		?>

		<div class="wrap">
			<h2>MoeCDN 设置</h2>

			<form method="post" name="moecdn" id="moecdn">

				<table class="form-table">
					<tbody>
						<tr><th scope="row">Gravatar</th>
							<td><label for="gravatar">
								<input name="gravatar" type="hidden" value="0" />
								<input name="gravatar" type="checkbox" id="gravatar" value="1" <?php checked(self::$options['gravatar']); ?>>
								替换 Gravatar 服务器
							</label></td>
						</tr>
						<tr><th scope="row">Google</th>
							<td><label for="googleapis">
								<input name="googleapis" type="hidden" value="0" />
								<input name="googleapis" type="checkbox" id="googleapis" value="1" <?php checked(self::$options['googleapis']); ?>>
								替换 Google Fonts 和 Google AJAX CDN 服务器
							</label></td>
						</tr>
						<tr><th scope="row">WordPress</th>
							<td><label for="worg">
								<input name="worg" type="hidden" value="0" />
								<input name="worg" type="checkbox" id="worg" value="1" <?php checked(self::$options['worg']); ?>>
								替换 WordPress Emoji 图片服务器
							</label></td>
						</tr>
						<tr><th scope="row">WP.COM</th>
							<td><label for="wpcom">
									<input name="wpcom" type="hidden" value="0" />
									<input name="wpcom" type="checkbox" id="wpcom" value="1" <?php checked(self::$options['wpcom']); ?>>
									替换 Jetpack 等 WordPress.com 静态资源服务器
								</label></td>
						</tr>
						<tr><th scope="row">发送统计信息</th>
							<td><label for="collect">
									<input name="collect" type="hidden" value="0" />
									<input name="collect" type="checkbox" id="collect" value="1" <?php checked(get_option('moecdn_collect', true)); ?>>
								向我们发送您的站点信息。我们不会收集您的个人资料，所收集到的信息仅会用于数据统计。
								</label></td>
						</tr>
					</tbody>
				</table>
				
				<p class="submit">
					<input type="submit" name="submit" id="submit" class="button button-primary" value="保存更改">
					<!--&nbsp;<input name="reset" type="submit" class="button button-secondary" value="重置设置" onclick="return confirm('你确定要重置所有的设置吗？');">-->
				</p>
			</form>
		</div>

		<?php
	}

	public static function after_activate() {
		add_option('moecdn_activete', true);
	}
	public static function redirect() {
		if (is_admin() && get_option('moecdn_activete', false)) {
			delete_option( 'moecdn_activete' );
			wp_redirect(admin_url('options-general.php?page=moecdn'));
		}
	}

	public static function collect() {
		$n = base64_encode(get_bloginfo('name'));
		$u = base64_encode(get_bloginfo('url'));
		$v = base64_encode(get_bloginfo('version'));
		?>
		<iframe style="display:none !important;display:none;visibility:hidden" src="https://api.nnya.cat/collect/?t=wordpress&n=<?php echo $n; ?>&u=<?php echo $u; ?>&v=<?php echo $v; ?>"></iframe>
		<?php
	}
}

MoeCDN::init();