diff --git a/docs/misc/sign/wbi.md b/docs/misc/sign/wbi.md index 7ed51b2..7c0d9c3 100644 --- a/docs/misc/sign/wbi.md +++ b/docs/misc/sign/wbi.md @@ -201,7 +201,10 @@ bar=514&baz=1919810&foo=114&wts=1702204169&w_rid=d3cbd2a2316089117134038bf4caf44 ### JavaScript -需要 `axios`、`md5` 依赖 +需要 `fetch`(浏览器、NodeJS等环境自带)、`md5` 依赖 + + + ```javascript import md5 from 'md5' @@ -244,8 +247,8 @@ async function getWbiKeys() { const res = await fetch('https://api.bilibili.com/x/web-interface/nav', { headers: { // SESSDATA 字段 - Cookie: "SESSDATA=xxxxxx", - User-Agent: 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.3', + Cookie: 'SESSDATA=xxxxxx', + 'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.3', Referer: 'https://www.bilibili.com/'//对于直接浏览器调用可能不适用 } }) @@ -275,6 +278,99 @@ async function main() { main() ``` + + + + +```typescript +import md5 from 'md5' + +const mixinKeyEncTab = [ + 46, 47, 18, 2, 53, 8, 23, 32, 15, 50, 10, 31, 58, 3, 45, 35, 27, 43, 5, 49, + 33, 9, 42, 19, 29, 28, 14, 39, 12, 38, 41, 13, 37, 48, 7, 16, 24, 55, 40, + 61, 26, 17, 0, 1, 60, 51, 30, 4, 22, 25, 54, 21, 56, 59, 6, 63, 57, 62, 11, + 36, 20, 34, 44, 52 +] + +// 对 imgKey 和 subKey 进行字符顺序打乱编码 +const getMixinKey = (orig: string) => + mixinKeyEncTab + .map((n) => orig[n]) + .join("") + .slice(0, 32); + +// 为请求参数进行 wbi 签名 +function encWbi( + params: { [key: string]: string | number | object }, + img_key: string, + sub_key: string +) { + const mixin_key = getMixinKey(img_key + sub_key), + curr_time = Math.round(Date.now() / 1000), + chr_filter = /[!'()*]/g; + + Object.assign(params, { wts: curr_time }); // 添加 wts 字段 + // 按照 key 重排参数 + const query = Object.keys(params) + .sort() + .map((key) => { + // 过滤 value 中的 "!'()*" 字符 + const value = params[key].toString().replace(chr_filter, ""); + return `${encodeURIComponent(key)}=${encodeURIComponent(value)}`; + }) + .join("&"); + + const wbi_sign = md5(query + mixin_key); // 计算 w_rid + + return query + "&w_rid=" + wbi_sign; +} +// 获取最新的 img_key 和 sub_key +async function getWbiKeys(SESSDATA: string) { + const res = await fetch('https://api.bilibili.com/x/web-interface/nav', { + headers: { + // SESSDATA 字段 + Cookie: `SESSDATA=${SESSDATA}`, + 'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.3', + Referer: 'https://www.bilibili.com/'//对于直接浏览器调用可能不适用 + } + }) + const { + data: { + wbi_img: { img_url, sub_url }, + }, + } = (await res.json()) as { + data: { + wbi_img: { img_url: string; sub_url: string }; + }; + }; + + return { + img_key: img_url.slice( + img_url.lastIndexOf('/') + 1, + img_url.lastIndexOf('.') + ), + sub_key: sub_url.slice( + sub_url.lastIndexOf('/') + 1, + sub_url.lastIndexOf('.') + ) + } +} + +async function main() { + const web_keys = await getWbiKeys("SESSDATA的值") + const params = { foo: '114', bar: '514', baz: 1919810 }, + img_key = web_keys.img_key, + sub_key = web_keys.sub_key + const query = encWbi(params, img_key, sub_key) + console.log(query) +} + +main() +``` + + + + 输出内容为进行 Wbi 签名的后参数的 url query 形式 ```