commit

assets/css/style.css

@@ -0,0 +1,165 @@
+/* 后台样式 */
+.flm-admin-container {
+    display: flex;
+    gap: 2rem;
+    margin-top: 20px;
+}
+
+.flm-add-form {
+    flex: 1;
+    max-width: 400px;
+    background: #fff;
+    padding: 20px;
+    border-radius: 4px;
+    box-shadow: 0 1px 1px rgba(0,0,0,0.04);
+}
+
+.flm-links-list {
+    flex: 2;
+    background: #fff;
+    padding: 20px;
+    border-radius: 4px;
+    box-shadow: 0 1px 1px rgba(0,0,0,0.04);
+}
+
+.form-group {
+    margin-bottom: 15px;
+}
+
+.form-group label {
+    display: block;
+    margin-bottom: 5px;
+    font-weight: 600;
+}
+
+.form-group input[type="text"],
+.form-group input[type="url"] {
+    width: 100%;
+    padding: 8px;
+    border: 1px solid #ddd;
+    border-radius: 4px;
+}
+
+#flm-sortable-links {
+    list-style: none;
+    padding: 0;
+    margin: 20px 0;
+}
+
+.flm-link-item {
+    display: flex;
+    align-items: center;
+    gap: 15px;
+    padding: 15px;
+    margin-bottom: 15px;
+    background: #f9f9f9;
+    border-radius: 4px;
+    border-left: 4px solid #6667ab;
+}
+
+.flm-link-preview {
+    display: flex;
+    align-items: center;
+    gap: 10px;
+    min-width: 200px;
+}
+
+.flm-link-icon {
+    width: 32px;
+    height: 32px;
+    border-radius: 50%;
+    object-fit: cover;
+}
+
+.flm-link-fields {
+    flex: 1;
+}
+
+.flm-link-actions {
+    min-width: 100px;
+}
+
+.flm-import-export {
+    margin-top: 30px;
+    padding-top: 20px;
+    border-top: 1px solid #eee;
+}
+
+.flm-import-export h3 {
+    margin-bottom: 15px;
+}
+
+.flm-export, .flm-import {
+    margin-bottom: 15px;
+}
+
+/* 前端展示样式 */
+.flm-links-container {
+    display: grid;
+    grid-template-columns: repeat(3, 1fr);
+    gap: 20px;
+    margin: 20px 0;
+}
+
+.flm-link-card {
+    border: 1px solid #6667ab;
+    border-radius: 14px;
+    padding: 20px;
+    text-align: center;
+    transition: all 0.3s ease;
+}
+
+.flm-link-card:hover {
+    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
+    transform: translateY(-2px);
+}
+
+.flm-link-icon-container {
+    margin-bottom: 10px;
+}
+
+.flm-link-icon-container img {
+    width: 64px;
+    height: 64px;
+    border-radius: 50%;
+    object-fit: cover;
+    border: 1px solid #eee;
+}
+
+.flm-link-name {
+    font-weight: bold;
+    color: inherit; /* 使用主题默认颜色 */
+    margin-top: 10px;
+}
+
+.flm-link-card a {
+    text-decoration: none;
+    color: inherit;
+    display: block;
+}
+
+/* 响应式设计 */
+@media (max-width: 1024px) {
+    .flm-links-container {
+        grid-template-columns: repeat(2, 1fr);
+    }
+}
+
+@media (max-width: 600px) {
+    .flm-admin-container {
+        flex-direction: column;
+    }
+    
+    .flm-add-form {
+        max-width: 100%;
+    }
+    
+    .flm-links-container {
+        grid-template-columns: 1fr;
+    }
+    
+    .flm-link-item {
+        flex-direction: column;
+        align-items: flex-start;
+    }
+}

assets/js/admin.js

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+jQuery(document).ready(function($) {
+    // 使链接可排序
+    $('#flm-sortable-links').sortable({
+        handle: '.flm-link-preview',
+        placeholder: 'flm-link-item-placeholder',
+        axis: 'y',
+        update: function() {
+            // 更新排序后可以在这里添加AJAX保存逻辑
+        }
+    });
+    
+    // 删除链接
+    $('.flm-delete-link').on('click', function(e) {
+        e.preventDefault();
+        
+        if (!confirm('确定要删除这个链接吗？')) {
+            return;
+        }
+        
+        var $button = $(this);
+        var linkId = $button.data('link-id');
+        
+        $.ajax({
+            url: flm_vars.ajax_url,
+            type: 'POST',
+            data: {
+                action: 'flm_delete_link',
+                link_id: linkId,
+                nonce: flm_vars.nonce
+            },
+            beforeSend: function() {
+                $button.prop('disabled', true).text('删除中...');
+            },
+            success: function() {
+                $button.closest('.flm-link-item').fadeOut(300, function() {
+                    $(this).remove();
+                });
+            },
+            error: function() {
+                alert('删除失败，请重试');
+                $button.prop('disabled', false).text('删除');
+            }
+        });
+    });
+});

friend-links-manager.php

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+<?php
+/*
+Plugin Name: 友情链接管理器
+Description: 管理并展示友情链接，支持导入导出
+Version: 1.1.1
+Author: 林海草原
+Author URI: https://lhcy.org
+Text Domain: friend-links-manager
+*/
+
+defined('ABSPATH') or die('无权访问');
+
+// 定义插件常量
+define('FLM_VERSION', '1.0');
+define('FLM_PLUGIN_DIR', plugin_dir_path(__FILE__));
+define('FLM_PLUGIN_URL', plugin_dir_url(__FILE__));
+
+// 创建数据库表
+register_activation_hook(__FILE__, 'flm_create_table');
+function flm_create_table() {
+    global $wpdb;
+    $table_name = $wpdb->prefix . 'friend_links';
+    
+    $charset_collate = $wpdb->get_charset_collate();
+    
+    $sql = "CREATE TABLE $table_name (
+        id mediumint(9) NOT NULL AUTO_INCREMENT,
+        name varchar(100) NOT NULL,
+        url varchar(255) NOT NULL,
+        icon varchar(255) DEFAULT '',
+        sort_order int(11) DEFAULT 0,
+        PRIMARY KEY (id)
+    ) $charset_collate;";
+    
+    require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
+    dbDelta($sql);
+
+    // 初始化插件版本
+    update_option('flm_version', FLM_VERSION);
+}
+
+// 动态卸载逻辑（替代 register_uninstall_hook）
+register_deactivation_hook(__FILE__, 'flm_cleanup');
+function flm_cleanup() {
+    global $wpdb;
+    
+    // 删除数据库表
+    $table_name = $wpdb->prefix . 'friend_links';
+    if ($wpdb->get_var("SHOW TABLES LIKE '$table_name'") == $table_name) {
+        $wpdb->query("DROP TABLE IF EXISTS $table_name");
+    }
+    
+    // 清理插件选项
+    delete_option('flm_version');
+    
+    // 强制刷新缓存（针对某些缓存插件）
+    wp_cache_flush();
+}
+
+// 加载插件功能文件
+require_once FLM_PLUGIN_DIR . 'includes/admin-page.php';
+require_once FLM_PLUGIN_DIR . 'includes/shortcode.php';
+
+// 加载样式和脚本
+add_action('wp_enqueue_scripts', 'flm_enqueue_scripts');
+function flm_enqueue_scripts() {
+    wp_enqueue_style(
+        'flm-style',
+        FLM_PLUGIN_URL . 'assets/css/style.css',
+        array(),
+        FLM_VERSION
+    );
+}
+
+// 后台脚本和样式
+add_action('admin_enqueue_scripts', 'flm_admin_enqueue_scripts');
+function flm_admin_enqueue_scripts($hook) {
+    if ('toplevel_page_friend-links-manager' === $hook) {       
+        wp_enqueue_style(
+            'flm-admin-style',
+            FLM_PLUGIN_URL . 'assets/css/style.css',
+            array(),
+            FLM_VERSION
+        );
+
+        wp_enqueue_script(
+            'flm-admin-js',
+            FLM_PLUGIN_URL . 'assets/js/admin.js',
+            array('jquery', 'jquery-ui-sortable'),
+            FLM_VERSION,
+            true
+        );
+        
+        wp_localize_script('flm-admin-js', 'flm_vars', array(
+            'ajax_url' => admin_url('admin-ajax.php'),
+            'nonce' => wp_create_nonce('flm_nonce')
+        ));
+    }
+}

includes/admin-page.php

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+<?php
+
+// 添加管理菜单
+add_action('admin_menu', 'flm_add_admin_menu');
+function flm_add_admin_menu() {
+    add_menu_page(
+        '友情链接管理',
+        '友情链接',
+        'manage_options',
+        'friend-links-manager',
+        'flm_admin_page',
+        'dashicons-admin-links',
+        30
+    );
+}
+
+// 自动获取favicon
+function flm_get_favicon($url) {
+    $domain = parse_url($url, PHP_URL_HOST);
+    if ($domain) {
+        $domain = preg_replace('/^www\./', '', $domain);
+        return 'https://favicon.im/' . urlencode($domain);
+    }
+    return '';
+}
+
+// 极端严格的URL清理（用于导出）
+function flm_sanitize_export_url($url) {
+    if (empty($url)) return '';
+    
+    // 先解码HTML实体
+    $url = html_entity_decode($url);
+    
+    // 移除所有HTML标签和特殊字符
+    $url = strip_tags($url);
+    $url = str_replace(array("\r", "\n", "\t", "\\", "'", '"', " ", "<", ">"), '', $url);
+    
+    // 使用正则提取纯URL
+    if (preg_match('/(https?:\/\/[^\s\"\'<>]+)/i', $url, $matches)) {
+        $url = $matches[1];
+    }
+    
+    // 最终过滤和验证
+    $url = filter_var($url, FILTER_SANITIZE_URL);
+    if (!preg_match('/^https?:\/\//i', $url)) {
+        $url = 'http://' . ltrim($url, '/');
+    }
+    
+    return rtrim($url, '/');
+}
+
+// 极端严格的文本清理（用于导出）
+function flm_sanitize_export_text($text) {
+    if (empty($text)) return '';
+    
+    // 彻底移除所有HTML/JavaScript代码
+    $text = html_entity_decode($text);
+    $text = strip_tags($text);
+    $text = str_replace(array("\r", "\n", "\t", "\\", "'", '"', "<", ">"), '', $text);
+    
+    return sanitize_text_field($text);
+}
+
+// 管理页面内容
+function flm_admin_page() {
+    global $wpdb;
+    $table_name = $wpdb->prefix . 'friend_links';
+    
+    // 显示警告信息
+    echo '<div class="notice notice-warning"><p><strong>警告：</strong>禁用该插件将删除所有链接数据，请在禁用前导出包含链接的CSV文件！</p></div>';
+    
+    // 处理表单提交
+    if (isset($_POST['flm_action'])) {
+        check_admin_referer('flm_nonce');
+        
+        switch ($_POST['flm_action']) {
+            case 'add_link':
+                if (!empty($_POST['name']) && !empty($_POST['url'])) {
+                    $name = sanitize_text_field($_POST['name']);
+                    $url = esc_url_raw($_POST['url']);
+                    $icon = !empty($_POST['icon']) ? esc_url_raw($_POST['icon']) : flm_get_favicon($url);
+                    
+                    $existing = $wpdb->get_row($wpdb->prepare(
+                        "SELECT id FROM $table_name WHERE url = %s", 
+                        $url
+                    ));
+                    
+                    if (!$existing) {
+                        $wpdb->insert($table_name, array(
+                            'name' => $name,
+                            'url' => $url,
+                            'icon' => $icon,
+                            'sort_order' => 0
+                        ));
+                        echo '<div class="notice notice-success"><p>链接添加成功！</p></div>';
+                    } else {
+                        echo '<div class="notice notice-error"><p>该URL的链接已存在！</p></div>';
+                    }
+                }
+                break;
+                
+            case 'update_links':
+                if (!empty($_POST['link_ids'])) {
+                    foreach ($_POST['link_ids'] as $index => $id) {
+                        $wpdb->update($table_name, array(
+                            'name' => sanitize_text_field($_POST['link_names'][$index]),
+                            'url' => esc_url_raw($_POST['link_urls'][$index]),
+                            'icon' => esc_url_raw($_POST['link_icons'][$index]),
+                            'sort_order' => $index
+                        ), array('id' => intval($id)));
+                    }
+                    echo '<div class="notice notice-success"><p>链接更新成功！</p></div>';
+                }
+                break;
+                
+            case 'delete_link':
+                if (!empty($_POST['link_id'])) {
+                    $wpdb->delete($table_name, array('id' => intval($_POST['link_id'])));
+                    echo '<div class="notice notice-success"><p>链接删除成功！</p></div>';
+                }
+                break;
+                
+            case 'export_links':
+                $links = $wpdb->get_results("SELECT name, url, icon FROM $table_name ORDER BY sort_order ASC");
+                
+                // 清除所有输出缓冲
+                while (ob_get_level()) {
+                    ob_end_clean();
+                }
+                
+                header('Content-Type: text/csv; charset=utf-8');
+                header('Content-Disposition: attachment; filename=friend-links-export-' . date('Y-m-d') . '.csv');
+                header('Pragma: no-cache');
+                header('Expires: 0');
+                
+                $output = fopen('php://output', 'w');
+                
+                // 添加BOM头解决中文乱码
+                fwrite($output, chr(0xEF).chr(0xBB).chr(0xBF));
+                
+                // 只写入三列标题
+                fputcsv($output, array(
+                    '网站名称',
+                    '网站URL',
+                    '图标URL'
+                ));
+                
+                foreach ($links as $link) {
+                    // 对每列数据应用极端清理
+                    fputcsv($output, array(
+                        flm_sanitize_export_text($link->name),
+                        flm_sanitize_export_url($link->url),
+                        flm_sanitize_export_url($link->icon)
+                    ));
+                }
+                
+                fclose($output);
+                exit;
+                break;
+                
+            case 'import_links':
+                if (!empty($_FILES['import_file']['tmp_name'])) {
+                    $file = $_FILES['import_file']['tmp_name'];
+                    $handle = fopen($file, 'r');
+                    $import_count = 0;
+                    $update_count = 0;
+                    $error_count = 0;
+                    
+                    // 跳过标题行
+                    fgetcsv($handle);
+                    
+                    while (($data = fgetcsv($handle)) !== false) {
+                        if (count($data) < 2 || empty($data[0]) || empty($data[1])) {
+                            $error_count++;
+                            continue;
+                        }
+                        
+                        $name = sanitize_text_field($data[0]);
+                        $url = esc_url_raw($data[1]);
+                        $icon = isset($data[2]) ? esc_url_raw($data[2]) : flm_get_favicon($data[1]);
+                        
+                        if (!filter_var($url, FILTER_VALIDATE_URL)) {
+                            $error_count++;
+                            continue;
+                        }
+                        
+                        if (!empty($name) && !empty($url)) {
+                            $existing = $wpdb->get_row($wpdb->prepare(
+                                "SELECT id FROM $table_name WHERE url = %s", 
+                                $url
+                            ));
+                            
+                            if ($existing) {
+                                $wpdb->update($table_name, array(
+                                    'name' => $name,
+                                    'icon' => $icon
+                                ), array('id' => $existing->id));
+                                $update_count++;
+                            } else {
+                                $wpdb->insert($table_name, array(
+                                    'name' => $name,
+                                    'url' => $url,
+                                    'icon' => $icon,
+                                    'sort_order' => 0
+                                ));
+                                $import_count++;
+                            }
+                        }
+                    }
+                    
+                    fclose($handle);
+                    
+                    $message = sprintf(
+                        '导入完成！新增 %d 条链接，更新 %d 条已有链接',
+                        $import_count,
+                        $update_count
+                    );
+                    
+                    if ($error_count > 0) {
+                        $message .= sprintf('，跳过 %d 条格式不正确的记录', $error_count);
+                    }
+                    
+                    echo '<div class="notice notice-success"><p>' . $message . '</p></div>';
+                }
+                break;
+        }
+    }
+    
+    // 获取所有链接
+    $links = $wpdb->get_results("SELECT * FROM $table_name ORDER BY sort_order ASC");
+    ?>
+    <div class="wrap">
+        <h1>友情链接管理</h1>
+        
+        <div class="flm-admin-container">
+            <!-- 添加新链接表单 -->
+            <div class="flm-add-form">
+                <h2>添加新链接</h2>
+                <form method="post">
+                    <?php wp_nonce_field('flm_nonce'); ?>
+                    <input type="hidden" name="flm_action" value="add_link">
+                    
+                    <div class="form-group">
+                        <label for="name">网站名称 (必填)</label>
+                        <input type="text" id="name" name="name" required>
+                    </div>
+                    
+                    <div class="form-group">
+                        <label for="url">网站URL (必填)</label>
+                        <input type="url" id="url" name="url" required>
+                    </div>
+                    
+                    <div class="form-group">
+                        <label for="icon">网站图标URL (可选)</label>
+                        <input type="url" id="icon" name="icon">
+                        <p class="description">留空将自动获取favicon</p>
+                    </div>
+                    
+                    <button type="submit" class="button button-primary">添加链接</button>
+                </form>
+            </div>
+            
+            <!-- 链接列表 -->
+            <div class="flm-links-list">
+                <h2>链接列表</h2>
+                
+                <form method="post" id="flm-links-form">
+                    <?php wp_nonce_field('flm_nonce'); ?>
+                    <input type="hidden" name="flm_action" value="update_links">
+                    
+                    <ul id="flm-sortable-links">
+                        <?php foreach ($links as $link): ?>
+                            <li class="flm-link-item">
+                                <input type="hidden" name="link_ids[]" value="<?php echo $link->id; ?>">
+                                
+                                <div class="flm-link-preview">
+                                    <?php if ($link->icon): ?>
+                                        <img src="<?php echo esc_url($link->icon); ?>" alt="<?php echo esc_attr($link->name); ?>" class="flm-link-icon">
+                                    <?php endif; ?>
+                                    <span class="flm-link-name"><?php echo esc_html($link->name); ?></span>
+                                </div>
+                                
+                                <div class="flm-link-fields">
+                                    <div class="form-group">
+                                        <label>网站名称</label>
+                                        <input type="text" name="link_names[]" value="<?php echo esc_attr($link->name); ?>" required>
+                                    </div>
+                                    
+                                    <div class="form-group">
+                                        <label>网站URL</label>
+                                        <input type="url" name="link_urls[]" value="<?php echo esc_attr($link->url); ?>" required>
+                                    </div>
+                                    
+                                    <div class="form-group">
+                                        <label>网站图标URL</label>
+                                        <input type="url" name="link_icons[]" value="<?php echo esc_attr($link->icon); ?>">
+                                    </div>
+                                </div>
+                                
+                                <div class="flm-link-actions">
+                                    <button type="button" class="button flm-delete-link" data-link-id="<?php echo $link->id; ?>">删除</button>
+                                </div>
+                            </li>
+                        <?php endforeach; ?>
+                    </ul>
+                    
+                    <?php if (!empty($links)): ?>
+                        <button type="submit" class="button button-primary">保存更改</button>
+                    <?php endif; ?>
+                </form>
+                
+                <!-- 导入导出 -->
+                <div class="flm-import-export">
+                    <h3>导入/导出</h3>
+                    
+                    <div class="flm-export">
+                        <form method="post">
+                            <?php wp_nonce_field('flm_nonce'); ?>
+                            <input type="hidden" name="flm_action" value="export_links">
+                            <button type="submit" class="button">导出为CSV</button>
+                            <p class="description">导出的CSV文件将只包含三列数据：网站名称、网站URL、图标URL</p>
+                        </form>
+                    </div>
+                    
+                    <div class="flm-import">
+                        <form method="post" enctype="multipart/form-data">
+                            <?php wp_nonce_field('flm_nonce'); ?>
+                            <input type="hidden" name="flm_action" value="import_links">
+                            
+                            <div class="form-group">
+                                <label for="import_file">选择CSV文件</label>
+                                <input type="file" id="import_file" name="import_file" accept=".csv" required>
+                                <p class="description">请选择包含三列数据的CSV文件（网站名称、网站URL、图标URL）</p>
+                            </div>
+                            
+                            <button type="submit" class="button button-primary">导入链接</button>
+                        </form>
+                    </div>
+                </div>
+            </div>
+        </div>
+    </div>
+    
+    <script>
+    jQuery(document).ready(function($) {
+        // 使链接可排序
+        $('#flm-sortable-links').sortable();
+        
+        // 删除链接
+        $('.flm-delete-link').on('click', function() {
+            if (confirm('确定要删除这个链接吗？')) {
+                var linkId = $(this).data('link-id');
+                var $form = $('#flm-links-form');
+                
+                $form.append('<input type="hidden" name="flm_action" value="delete_link">');
+                $form.append('<input type="hidden" name="link_id" value="' + linkId + '">');
+                $form.submit();
+            }
+        });
+    });
+    </script>
+    <?php
+}
+
+// 处理AJAX删除请求
+add_action('wp_ajax_flm_delete_link', 'flm_ajax_delete_link');
+function flm_ajax_delete_link() {
+    check_ajax_referer('flm_nonce', 'nonce');
+    
+    if (!empty($_POST['link_id'])) {
+        global $wpdb;
+        $table_name = $wpdb->prefix . 'friend_links';
+        $wpdb->delete($table_name, array('id' => intval($_POST['link_id'])));
+        wp_send_json_success();
+    }
+    
+    wp_send_json_error();
+}

includes/shortcode.php

@@ -0,0 +1,37 @@
+<?php
+// 注册短代码
+add_shortcode('friend_links', 'flm_display_friend_links');
+function flm_display_friend_links($atts) {
+    global $wpdb;
+    $table_name = $wpdb->prefix . 'friend_links';
+    
+    $atts = shortcode_atts(array(
+        'random' => 'true'
+    ), $atts);
+    
+    $order_by = ($atts['random'] === 'true') ? 'RAND()' : 'sort_order ASC';
+    $links = $wpdb->get_results("SELECT * FROM $table_name ORDER BY $order_by");
+    
+    if (empty($links)) {
+        return '';
+    }
+    
+    ob_start();
+    ?>
+    <div class="flm-links-container">
+        <?php foreach ($links as $link): ?>
+            <div class="flm-link-card">
+                <a href="<?php echo esc_url($link->url); ?>" target="_blank" rel="noopener noreferrer">
+                    <div class="flm-link-icon-container">
+                        <img src="<?php echo $link->icon ?: FLM_PLUGIN_URL . 'assets/images/default-icon.png'; ?>" 
+                             alt="<?php echo esc_attr($link->name); ?>" 
+                             class="flm-link-icon">
+                    </div>
+                    <div class="flm-link-name"><?php echo esc_html($link->name); ?></div>
+                </a>
+            </div>
+        <?php endforeach; ?>
+    </div>
+    <?php
+    return ob_get_clean();
+}