Update wbi.md about rust and javascript code examples for wbi signature implementation (#884)

@@ -196,80 +196,72 @@ bar=514&baz=1919810&foo=114&wts=1684746387&w_rid=d3cbd2a2316089117134038bf4caf44

196 196

197 197 ```javascript

198 198 import md5 from 'md5'

199 import axios from 'axios'

200 199

201 200 const mixinKeyEncTab = [

202 46, 47, 18, 2, 53, 8, 23, 32, 15, 50, 10, 31, 58, 3, 45, 35, 27, 43, 5, 49,

203 33, 9, 42, 19, 29, 28, 14, 39, 12, 38, 41, 13, 37, 48, 7, 16, 24, 55, 40,

204 61, 26, 17, 0, 1, 60, 51, 30, 4, 22, 25, 54, 21, 56, 59, 6, 63, 57, 62, 11,

205 36, 20, 34, 44, 52

201 46, 47, 18, 2, 53, 8, 23, 32, 15, 50, 10, 31, 58, 3, 45, 35, 27, 43, 5, 49,

202 33, 9, 42, 19, 29, 28, 14, 39, 12, 38, 41, 13, 37, 48, 7, 16, 24, 55, 40,

203 61, 26, 17, 0, 1, 60, 51, 30, 4, 22, 25, 54, 21, 56, 59, 6, 63, 57, 62, 11,

204 36, 20, 34, 44, 52

206 205 ]

207 206

208 207 // 对 imgKey 和 subKey 进行字符顺序打乱编码

209 function getMixinKey(orig) {

210 let temp = ''

211 mixinKeyEncTab.forEach((n) => {

212 temp += orig[n]

213 })

214 return temp.slice(0, 32)

215 }

208 const getMixinKey = (orig) => mixinKeyEncTab.map(n => orig[n]).join('').slice(0, 32)

216 209

217 210 // 为请求参数进行 wbi 签名

218 211 function encWbi(params, img_key, sub_key) {

219 const mixin_key = getMixinKey(img_key + sub_key),

220 curr_time = Math.round(Date.now() / 1000),

221 chr_filter = /[!'()*]/g

222 let query = []

223 Object.assign(params, { wts: curr_time }) // 添加 wts 字段

224 // 按照 key 重排参数

225 Object.keys(params).sort().forEach((key) => {

226 query.push(

227 `${encodeURIComponent(key)}=${encodeURIComponent(

228 // 过滤 value 中的 "!'()*" 字符

229 params[key].toString().replace(chr_filter, '')

230 )}`

231 )

212 const mixin_key = getMixinKey(img_key + sub_key),

213 curr_time = Math.round(Date.now() / 1000),

214 chr_filter = /[!'()*]/g

215

216 Object.assign(params, { wts: curr_time }) // 添加 wts 字段

217 // 按照 key 重排参数

218 const query = Object

219 .keys(params)

220 .sort()

221 .map(key => {

222 // 过滤 value 中的 "!'()*" 字符

223 const value = params[key].toString().replace(chr_filter, '')

224 return `${encodeURIComponent(key)}=${encodeURIComponent(value)}`

232 225 })

233 query = query.join('&')

234 const wbi_sign = md5(query + mixin_key) // 计算 w_rid

235 return query + '&w_rid=' + wbi_sign

226 .join('&')

227

228 const wbi_sign = md5(query + mixin_key) // 计算 w_rid

229

230 return query + '&w_rid=' + wbi_sign

236 231 }

237 232

238 233 // 获取最新的 img_key 和 sub_key

239 234 async function getWbiKeys() {

240 const resp = await axios({

241 url: 'https://api.bilibili.com/x/web-interface/nav',

242 method: 'get',

243 responseType: 'json'

244 }),

245 json_content = resp.data,

246 img_url = json_content.data.wbi_img.img_url,

247 sub_url = json_content.data.wbi_img.sub_url

248

249 return {

250 img_key: img_url.slice(

251 img_url.lastIndexOf('/') + 1,

252 img_url.lastIndexOf('.')

253 ),

254 sub_key: sub_url.slice(

255 sub_url.lastIndexOf('/') + 1,

256 sub_url.lastIndexOf('.')

257 )

235 const res = await fetch('https://api.bilibili.com/x/web-interface/nav', {

236 headers: {

237 // SESSDATA 字段

238 Cookie: "SESSDATA=xxxxxx"

258 239 }

240 })

241 const { data: { wbi_img: { img_url, sub_url } } } = await res.json()

242

243 return {

244 img_key: img_url.slice(

245 img_url.lastIndexOf('/') + 1,

246 img_url.lastIndexOf('.')

247 ),

248 sub_key: sub_url.slice(

249 sub_url.lastIndexOf('/') + 1,

250 sub_url.lastIndexOf('.')

251 )

252 }

259 253 }

260 254

261 getWbiKeys().then((wbi_keys) => {

262 const query = encWbi(

263 {

264 foo: '114',

265 bar: '514',

266 baz: 1919810

267 },

268 wbi_keys.img_key,

269 wbi_keys.sub_key

270 )

271 console.log(query)

272 })

255 async function main() {

256 const web_keys = await getWbiKeys()

257 const params = { foo: '114', bar: '514', baz: 1919810 },

258 img_key = web_keys.img_key,

259 sub_key = web_keys.sub_key

260 const query = encWbi(params, img_key, sub_key)

261 console.log(query)

262 }

263

264 main()

273 265 ```

274 266

275 267 输出内容为进行 Wbi 签名的后参数的 url query 形式

@@ -714,5 +706,113 @@ class Bilibili {

714 706 $c = new Bilibili();

715 707 echo $c->reQuery(['foo' => '114', 'bar' => '514', 'baz' => 1919810]);

716 708 // bar=514&baz=1919810&foo=114&wts=1700384803&w_rid=4614cb98d60a43e50c3a3033fe3d116b

709 ```

710

711 ### Rust

712

713 需要 serde、serde_json、reqwest、tokio 以及 md5

714

715 ```rust

716 use reqwest::header::USER_AGENT;

717 use serde::Deserialize;

718 use std::time::{SystemTime, UNIX_EPOCH};

719

720 const MIXIN_KEY_ENC_TAB: [usize; 64] = [

721 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,

722 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,

723 54, 21, 56, 59, 6, 63, 57, 62, 11, 36, 20, 34, 44, 52,

724 ];

725

726 #[derive(Deserialize)]

727 struct WbiImg {

728 img_url: String,

729 sub_url: String,

730 }

731

732 #[derive(Deserialize)]

733 struct Data {

734 wbi_img: WbiImg,

735 }

717 736

737 #[derive(Deserialize)]

738 struct ResWbi {

739 data: Data,

740 }

741

742 // 对 imgKey 和 subKey 进行字符顺序打乱编码

743 fn get_mixin_key(orig: &[u8]) -> String {

744 MIXIN_KEY_ENC_TAB

745 .iter()

746 .map(|&i| orig[i] as char)

747 .collect::<String>()

748 }

749

750 fn get_url_encoded(s: &str) -> String {

751 s.chars()

752 .filter_map(|c| match c.is_ascii_alphanumeric() || "-_.~".contains(c) {

753 true => Some(c.to_string()),

754 false => {

755 // 过滤 value 中的 "!'()*" 字符

756 if "!'()*".contains(c) {

757 return None;

758 }

759 let encoded = c

760 .encode_utf8(&mut [0; 4])

761 .bytes()

762 .fold("".to_string(), |acc, b| acc + &format!("%{:02X}", b));

763 Some(encoded)

764 }

765 })

766 .collect::<String>()

767 }

768

769 // 为请求参数进行 wbi 签名

770 fn encode_wbi(params: &mut Vec<(&str, String)>, (img_key, sub_key): (String, String)) -> String {

771 let mixin_key = get_mixin_key((img_key + &sub_key).as_bytes());

772 let cur_time = match SystemTime::now().duration_since(UNIX_EPOCH) {

773 Ok(t) => t.as_secs(),

774 Err(_) => panic!("SystemTime before UNIX EPOCH!"),

775 };

776 // 添加当前时间戳

777 params.push(("wts", cur_time.to_string()));

778 // 重新排序

779 params.sort_by(|a, b| a.0.cmp(b.0));

780 let query = params.iter().fold(String::from(""), |acc, (k, v)| {

781 acc + format!("{}={}&", get_url_encoded(k), get_url_encoded(v)).as_str()

782 });

783

784 let web_sign = format!("{:?}", md5::compute(query.clone() + &mixin_key));

785

786 query + &format!("w_rid={}", web_sign)

787 }

788

789 async fn get_wbi_keys() -> Result<(String, String), reqwest::Error> {

790 let client = reqwest::Client::new();

791 let ResWbi { data:Data{wbi_img} } = client

792 .get("https://api.bilibili.com/x/web-interface/nav")

793

    .header(USER_AGENT,"Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36")

794 // SESSDATA=xxxxx

795 .header("Cookie", "SESSDATA=xxxxx")

796 .send()

797 .await?

798 .json::<ResWbi>()

799 .await?;

800

801 Ok((wbi_img.img_url, wbi_img.sub_url))

802 }

803

804 #[tokio::main]

805 async fn main() {

806 let urls = get_wbi_keys().await.unwrap();

807 let mut params = vec![

808 ("foo", String::from("114")),

809 ("bar", String::from("514")),

810 ("baz", String::from("1919810")),

811 ];

812

813 let query = encode_wbi(&mut params, urls);

814

815 println!("{}", query);

816 }

718 817 ```

818

bilibili-API-collect

Update wbi.md about rust and javascript code examples for wbi signature implementation (#884)

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