225 lines
8.5 KiB
JavaScript
Executable File
225 lines
8.5 KiB
JavaScript
Executable File
#!/usr/bin/env node
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// 看雪论坛 / 微信公众号技术文章源获取工具（方案1：直接抓取官方论坛源）
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//
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// 背景：看雪学苑公众号文章均为看雪论坛（bbs.kanxue.com）帖子转载，微信侧无官方
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// API 可枚举他人公众号文章，因此直接抓论坛列表即等价于公众号选文源。
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//
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// 子命令：
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// kanxue list [--board 名|--id N] [--pages N] [--md] 论坛文章列表（默认全站）
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// kanxue thread <帖子ID> [--md] 单篇帖子标题/作者/正文
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// wechat <文章URL> [--md] 微信文章抓取（备用渠道）
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//
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// 输出默认 JSON（结构化，便于管道/喂给 AI）；--md 输出 markdown（便于直接入库）。
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// 零依赖（Node >=22 内置 fetch）。导出纯函数供 tests/wxsource.test.mjs 测试。
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const UA =
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'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0 Safari/537.36';
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// 版块名（中文/英文别名）→ forum id（首页导航实测确认；未知版块用 --id 指定）
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const BOARDS = {
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home: null, // 全站首页
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ai: 170, 'ai-help': 170, 'ai助力安全': 170, 'ai 助力安全': 170,
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'ai-self': 168, 'ai自身安全': 168, 'ai 自身安全': 168,
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'ai-platform': 123, 'ai平台与数据安全': 123,
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re: 4, 逆向工程: 4, 软件逆向: 4,
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ctf: 37, 'ctf对抗': 37,
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crypto: 132, 密码应用: 132, 密码算法: 132,
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tools: 10, 安全工具: 10,
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harmony: 178, 鸿蒙: 178,
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android: 161, 'android安全': 161,
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iot: 128, 'iot安全': 128,
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ios: 166, 'ios安全': 166,
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coding: 41, 编程技术: 41,
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unpack: 88, 加壳脱壳: 88,
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vuln: 150, 二进制漏洞: 150,
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pwn: 171,
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web: 151, 'web安全': 151,
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translate: 32, 外文翻译: 32,
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};
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export const BASE = 'https://bbs.kanxue.com';
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// ---------- 网络 ----------
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export async function fetchText(url, { retries = 1 } = {}) {
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for (let i = 0; ; i++) {
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const ctrl = new AbortController();
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const timer = setTimeout(() => ctrl.abort(), 20000);
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try {
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const res = await fetch(url, {
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headers: { 'user-agent': UA, 'accept-language': 'zh-CN,zh;q=0.9' },
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signal: ctrl.signal,
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});
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if (!res.ok) throw new Error(`HTTP ${res.status} ${url}`);
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return await res.text();
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} catch (e) {
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if (i >= retries) throw e;
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} finally {
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clearTimeout(timer);
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}
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}
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}
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// ---------- HTML → 简化 markdown 文本 ----------
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export function htmlToText(html) {
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let s = html
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.replace(/<script[\s\S]*?<\/script>/gi, '')
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.replace(/<style[\s\S]*?<\/style>/gi, '')
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.replace(/<br\s*\/?>/gi, '\n')
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.replace(/<\/(p|div|section|li|h[1-6]|pre|tr|blockquote)>/gi, '\n')
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.replace(/<img[^>]*>/gi, '[图片]')
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.replace(/<code[^>]*>/gi, '`')
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.replace(/<\/code>/gi, '`')
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.replace(/<li[^>]*>/gi, '- ')
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.replace(/<[^>]+>/g, '');
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s = s
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.replace(/ /g, ' ')
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.replace(/</g, '<')
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.replace(/>/g, '>')
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.replace(/&/g, '&')
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.replace(/"/g, '"')
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.replace(/'/g, "'");
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return s.replace(/\n{3,}/g, '\n\n').replace(/[ \t]+\n/g, '\n').trim();
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}
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// ---------- 看雪论坛列表解析 ----------
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// 首页聚合列表：<a class="bbs_home_page_list_title" href="thread-292402.htm" title="...">标题</a>
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export function parseKanxueHomeList(html) {
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const items = [];
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const re =
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/<a[^>]*class="[^"]*bbs_home_page_list_title[^"]*"[^>]*href="(thread-\d+\.htm)"[^>]*title="([^"]*)"[^>]*>[\s\S]*?<\/a>/g;
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for (const m of html.matchAll(re)) {
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items.push({ url: `${BASE}/${m[1]}`, title: m[2].trim() || htmlToText(m[0]) });
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}
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return items;
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}
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// 分类页（xiuno）：<tr class="thread ..." data-tid="292346"> 行内标题 + 作者
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export function parseForumList(html) {
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const items = [];
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const re = /<tr[^>]*class="thread[^"]*"[^>]*data-tid="(\d+)"[\s\S]*?<\/tr>/g;
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for (const m of html.matchAll(re)) {
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const tid = m[1];
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const t = m[0].match(/<a href="thread-\d+\.htm"[^>]*>([^<]{4,120})<\/a>/);
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const au = [...m[0].matchAll(/<a href="user-home-\d+\.htm"[^>]*>([^<]{2,40})<\/a>/g)].at(-1);
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if (!t) continue;
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items.push({
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url: `${BASE}/thread-${tid}.htm`,
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title: htmlToText(t[1]),
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author: au ? htmlToText(au[1]) : undefined,
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});
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}
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return items;
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}
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// ---------- 看雪帖子正文解析 ----------
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export function parseThread(html) {
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const title = html.match(/<title>([^<]*)</)?.[1]?.replace(/-[^-]*-看雪安全社区.*$/, '').trim();
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const author = html.match(/<a href="user-home-\d+\.htm"[^>]*title="([^"]+)"[^>]*>/)?.[1] ||
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html.match(/user-home-\d+\.htm"[^>]*>([^<]{2,40})<\/a>/)?.[1];
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// 正文：优先取第一条消息（isfirst=1，markdown 或富文本类型均可），终止于下一条消息
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const first =
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html.match(/<div class="message[^"]*"[^>]*isfirst="1"[^>]*>([\s\S]*?)<\/div>\s*<div class="message/) ||
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html.match(/<div class="message[^"]*"[^>]*>([\s\S]*?)<\/div>\s*<div class="message/) ||
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html.match(/<div class="message[^"]*"[^>]*isfirst="1"[^>]*>([\s\S]*)/) ||
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html.match(/<div class="message[^"]*"[^>]*>([\s\S]*)/);
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return { title: title || undefined, author, body: htmlToText(first ? first[1] : '') };
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}
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// ---------- 微信文章解析（备用渠道） ----------
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export function parseWechat(html) {
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const meta = (prop) => html.match(new RegExp(`<meta property="${prop}" content="([^"]*)"`))?.[1];
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const title = meta('og:title');
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const author = meta('og:article:author') || meta('og:description');
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const body = html.match(/<div[^>]*id="js_content"[^>]*>([\s\S]*?)(?:<\/div>\s*<script|$)/)?.[1] || '';
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return { title, author, body: htmlToText(body) };
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}
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// ---------- CLI ----------
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function usage() {
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console.log(`看雪/微信技术文章源获取工具
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用法:
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wxsource.mjs kanxue list [--board 名|--id N] [--pages N] [--md]
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论坛文章列表（默认全站首页；--md 输出 markdown 列表）
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内置版块: ${Object.keys(BOARDS).filter((k) => BOARDS[k]).join(' / ')}
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wxsource.mjs kanxue thread <帖子ID> [--md]
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单篇帖子标题/作者/正文（帖子ID 如 292402）
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wxsource.mjs wechat <文章URL> [--md]
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微信文章抓取（备用渠道，公众号内容 = 论坛转载）
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输出默认 JSON（{url,title,author,body} 结构），--md 输出 markdown。`);
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}
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function argVal(args, name, fallback) {
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const i = args.indexOf(name);
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return i >= 0 && args[i + 1] !== undefined ? args[i + 1] : fallback;
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}
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function has(args, name) {
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return args.includes(name);
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}
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async function main(argv) {
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const args = argv.slice(2);
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if (args.length === 0 || has(args, '-h') || has(args, '--help')) return usage();
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const md = has(args, '--md');
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const cmd = args[0];
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if (cmd === 'kanxue' && args[1] === 'list') {
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const board = argVal(args, '--board', 'home');
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const boardId = argVal(args, '--id', null) ?? BOARDS[board];
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const pages = parseInt(argVal(args, '--pages', '1'), 10);
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if (boardId === undefined && board !== 'home')
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throw new Error(`未知版块 "${board}"，用 --id 指定 forum 编号，或见 -h 的版块列表`);
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const urls = [];
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for (let p = 1; p <= pages; p++) {
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const url = boardId ? `${BASE}/forum-${boardId}${p > 1 ? '-' + p : ''}.htm` : `${BASE}/`;
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const html = await fetchText(url);
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const items = boardId ? parseForumList(html) : parseKanxueHomeList(html);
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urls.push(...items);
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}
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if (md) {
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console.log(`## 看雪 ${board} 文章列表\n`);
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for (const it of urls) console.log(`- [${it.title}](${it.url})` + (it.author ? ` — ${it.author}` : ''));
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} else {
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console.log(JSON.stringify(urls, null, 2));
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}
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} else if (cmd === 'kanxue' && args[1] === 'thread') {
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const id = args[2];
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if (!id) throw new Error('缺少帖子ID，如: kanxue thread 292402');
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const html = await fetchText(`${BASE}/thread-${id}.htm`);
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const t = parseThread(html);
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if (md) {
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console.log(`# ${t.title}\n\n作者: ${t.author ?? '未知'}\n\n${t.body}`);
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} else {
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console.log(JSON.stringify({ url: `${BASE}/thread-${id}.htm`, ...t }, null, 2));
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}
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} else if (cmd === 'wechat') {
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const url = args[1];
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if (!url) throw new Error('缺少微信文章 URL');
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const html = await fetchText(url);
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const a = parseWechat(html);
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if (md) {
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console.log(`# ${a.title ?? '未知'}\n\n作者: ${a.author ?? '未知'}\n\n${a.body}`);
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} else {
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console.log(JSON.stringify({ url, ...a }, null, 2));
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}
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} else {
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usage();
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process.exitCode = 1;
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}
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}
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if (process.argv[1]?.endsWith('wxsource.mjs')) {
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main(process.argv).catch((e) => {
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console.error(`错误: ${e.message}`);
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process.exitCode = 1;
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});
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}
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