dailyhot-api
Version:
An Api on Today's Hot list
69 lines (68 loc) • 2.64 kB
JavaScript
// 获取 Bilibili Web 端 WBI 签名鉴权
import { getCache, setCache } from "../cache.js";
import { get } from "../getData.js";
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) => mixinKeyEncTab
.map((n) => orig[n])
.join("")
.slice(0, 32);
// 为请求参数进行 wbi 签名
const encWbi = (params, img_key, sub_key) => {
const mixin_key = getMixinKey(img_key + sub_key);
const curr_time = Math.round(Date.now() / 1000);
const chr_filter = /[!'()*]/g;
// 添加 wts 字段
Object.assign(params, { wts: curr_time });
// 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("&");
// 计算 w_rid
const wbi_sign = md5(query + mixin_key);
return query + "&w_rid=" + wbi_sign;
};
// 获取最新的 img_key 和 sub_key
const getWbiKeys = async () => {
const result = await get({
url: "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",
Referer: "https://www.bilibili.com/",
},
});
const img_url = result.data.wbi_img?.img_url ?? "";
const sub_url = result.data.wbi_img?.sub_url ?? "";
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(".")),
};
};
const getBiliWbi = async () => {
const cachedData = await getCache("bilibili-wbi");
if (cachedData?.data)
return cachedData.data;
const web_keys = await getWbiKeys();
const params = { foo: "114", bar: "514", baz: 1919810 };
const img_key = web_keys.img_key;
const sub_key = web_keys.sub_key;
const query = encWbi(params, img_key, sub_key);
await setCache("bilibili-wbi", {
data: query,
updateTime: new Date().toISOString(),
});
return query;
};
export default getBiliWbi;