fix(route): 通过在配置中预添加大量 Cookie 来绕过 Bilibili 反爬

lib/v2/bilibili/cache.js

@@ -1,24 +1,49 @@
 const got = require('@/utils/got');
 const utils = require('./utils');
 const cheerio = require('cheerio');
+const config = require('@/config').value;
 
 module.exports = {
     getCookie: (ctx) => {
+        if (Object.keys(config.bilibili.cookies).length > 0) {
+            return config.bilibili.cookies[Object.keys(config.bilibili.cookies)[Math.floor(Math.random() * Object.keys(config.bilibili.cookies).length)]];
+        }
         const key = 'bili-cookie';
         return ctx.cache.tryGet(key, async () => {
             // default Referer: https://www.bilibili.com is limited
             // Bilibili return cookies with multiple set-cookie
-            const url = 'https://www.bilibili.com/';
-            const response = await got(url, {
-                headers: {
-                    Referer: url,
-                },
-            });
-            const setCookies = response.headers['set-cookie'];
-            if (typeof setCookies === 'undefined') {
+            let response = await got('https://www.bilibili.com/');
+            const setCookie = response.headers['set-cookie'];
+            if (typeof setCookie === 'undefined') {
                 return '';
             }
-            return setCookies.map((cookie) => cookie.split(';')[0]).join('; ');
+            const cookie = setCookie.map((cookie) => cookie.split(';')[0]);
+            cookie.push(['b_lsid', utils.lsid()].join('='));
+            cookie.push(['_uuid', utils._uuid()].join('='));
+            response = await got('https://api.bilibili.com/x/frontend/finger/spi', {
+                headers: {
+                    Referer: 'https://www.bilibili.com/',
+                    Cookie: cookie.join('; '),
+                }
+            });
+            cookie.push(['bvuid4', encodeURIComponent(response.data.data.b_4)].join('='));
+            const e = Math.floor(Date.now() / 1000);;
+            const hexsign = utils.hexsign(e);
+            await got('https://space.bilibili.com/1', {
+                headers: {
+                    Referer: 'https://www.bilibili.com/',
+                    Cookie: cookie.join('; '),
+                }
+            });
+            response = await got.post(`https://api.bilibili.com/bapis/bilibili.api.ticket.v1.Ticket/GenWebTicket?key_id=ec02&hexsign=${hexsign}&context[ts]=${e}&csrf=`, {
+                headers: {
+                    Referer: 'https://space.bilibili.com/1',
+                    Cookie: cookie.join('; '),
+                }
+            });
+            cookie.push(['bili_ticket', response.data.data.ticket].join('='));
+            cookie.push(['bili_ticket_expires', (parseInt(response.data.data.created_at) + parseInt(response.data.data.ttl)).toString()].join('='));
+            return cookie.join('; ');
         });
     },
     getVerifyString: (ctx) => {

lib/v2/bilibili/utils.js

@@ -1,12 +1,71 @@
 const md5 = require('@/utils/md5');
+const CryptoJS = require('crypto-js');
 
 function iframe(aid, page, bvid) {
     return `<iframe src="https://player.bilibili.com/player.html?${bvid ? `bvid=${bvid}` : `aid=${aid}`}${
         page ? `&page=${page}` : ''
     }&high_quality=1&autoplay=0" width="650" height="477" scrolling="no" border="0" frameborder="no" framespacing="0" allowfullscreen="true"></iframe>`;
 }
 
-const addVerifyInfo = (params, verifyString) => {
+// a
+function randomHexStr(length) {
+    let string = '';
+    for (let r = 0; r < length; r++) {
+        string += dec2HexUpper(16 * Math.random());
+    }
+    return padStringWithZeros(string, length);
+}
+
+// o
+function dec2HexUpper(e) {
+    return Math.ceil(e).toString(16).toUpperCase();
+}
+
+// s
+function padStringWithZeros(string, length) {
+    let padding = '';
+    if (string.length < length) {
+        for (let n = 0; n < length - string.length; n++) {
+            padding += '0';
+        }
+    }
+    return padding + string;
+}
+
+function lsid() {
+    const e = Date.now().toString(16).toUpperCase();
+    const lsid = randomHexStr(8) + '_' + e;
+    return lsid;
+}
+
+function _uuid() {
+    const e = randomHexStr(8);
+    const t = randomHexStr(4);
+    const r = randomHexStr(4);
+    const n = randomHexStr(4);
+    const o = randomHexStr(12);
+    const i = Date.now();
+    return e + '-' + t + '-' + r + '-' + n + '-' + o + padStringWithZeros((i % 100000).toString(), 5) + 'infoc';
+}
+
+// P
+function shiftCharByOne(string) {
+    let shiftedStr = '';
+    for (let n = 0; n < string.length; n++) {
+        shiftedStr += String.fromCharCode(string.charCodeAt(n) - 1);
+    }
+    return shiftedStr;
+}
+
+// o
+function hexsign(e) {
+    const n = 'YhxToH[2q';
+    const r = CryptoJS.HmacSHA256('ts'.concat(e), shiftCharByOne(n));
+    const o = CryptoJS.enc.Hex.stringify(r);
+    return o;
+}
+
+function addVerifyInfo(params, verifyString) {
     const searchParams = new URLSearchParams(params);
     searchParams.sort();
     const verifyParam = searchParams.toString();
@@ -17,6 +76,9 @@ const addVerifyInfo = (params, verifyString) => {
 
 module.exports = {
     iframe,
+    lsid,
+    _uuid,
+    hexsign,
     addVerifyInfo,
     bvidTime: 1589990400,
 };

lib/v2/bilibili/video-all.js

@@ -2,7 +2,6 @@ const got = require('@/utils/got');
 const cache = require('./cache');
 const utils = require('./utils');
 const { parseDate } = require('@/utils/parse-date');
-const config = require('@/config');
 
 module.exports = async (ctx) => {
     const uid = ctx.params.uid;
@@ -29,21 +28,18 @@ module.exports = async (ctx) => {
     const pageTotal = Math.ceil(response.data.data.page.count / response.data.data.page.ps);
 
     const getPage = async (pageId) => {
-        // A hack way to skip limit
-        const userAgent = config.ua + `.${pageId}`;
+        const cookie = await cache.getCookie(ctx);
         await got(`https://space.bilibili.com/${uid}/video?tid=0&page=${pageId}&keyword=&order=pubdate`, {
             headers: {
                 Referer: `https://space.bilibili.com/${uid}/`,
                 Cookie: cookie,
-                'User-Agent': userAgent,
             },
         });
         const params = utils.addVerifyInfo(`mid=${uid}&ps=30&tid=0&pn=${pageId}&keyword=&order=pubdate&platform=web&web_location=1550101&order_avoided=true`, verifyString);
         return got(`https://api.bilibili.com/x/space/wbi/arc/search?${params}`, {
             headers: {
                 Referer: `https://space.bilibili.com/${uid}/video?tid=0&page=${pageId}&keyword=&order=pubdate`,
                 Cookie: cookie,
-                'User-Agent': userAgent,
             },
         });
     };