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Update wbi.md about rust and javascript code examples for wbi signature implementation (#884)
* Update wbi.md about rust and javascript * Apply suggestions from code review
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@ -196,80 +196,72 @@ bar=514&baz=1919810&foo=114&wts=1684746387&w_rid=d3cbd2a2316089117134038bf4caf44
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```javascript
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import md5 from 'md5'
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import axios from 'axios'
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const mixinKeyEncTab = [
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46, 47, 18, 2, 53, 8, 23, 32, 15, 50, 10, 31, 58, 3, 45, 35, 27, 43, 5, 49,
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33, 9, 42, 19, 29, 28, 14, 39, 12, 38, 41, 13, 37, 48, 7, 16, 24, 55, 40,
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61, 26, 17, 0, 1, 60, 51, 30, 4, 22, 25, 54, 21, 56, 59, 6, 63, 57, 62, 11,
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36, 20, 34, 44, 52
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46, 47, 18, 2, 53, 8, 23, 32, 15, 50, 10, 31, 58, 3, 45, 35, 27, 43, 5, 49,
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33, 9, 42, 19, 29, 28, 14, 39, 12, 38, 41, 13, 37, 48, 7, 16, 24, 55, 40,
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61, 26, 17, 0, 1, 60, 51, 30, 4, 22, 25, 54, 21, 56, 59, 6, 63, 57, 62, 11,
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36, 20, 34, 44, 52
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]
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// 对 imgKey 和 subKey 进行字符顺序打乱编码
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function getMixinKey(orig) {
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let temp = ''
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mixinKeyEncTab.forEach((n) => {
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temp += orig[n]
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})
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return temp.slice(0, 32)
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}
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const getMixinKey = (orig) => mixinKeyEncTab.map(n => orig[n]).join('').slice(0, 32)
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// 为请求参数进行 wbi 签名
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function encWbi(params, img_key, sub_key) {
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const mixin_key = getMixinKey(img_key + sub_key),
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curr_time = Math.round(Date.now() / 1000),
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chr_filter = /[!'()*]/g
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let query = []
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Object.assign(params, { wts: curr_time }) // 添加 wts 字段
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// 按照 key 重排参数
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Object.keys(params).sort().forEach((key) => {
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query.push(
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`${encodeURIComponent(key)}=${encodeURIComponent(
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// 过滤 value 中的 "!'()*" 字符
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params[key].toString().replace(chr_filter, '')
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)}`
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)
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const mixin_key = getMixinKey(img_key + sub_key),
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curr_time = Math.round(Date.now() / 1000),
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chr_filter = /[!'()*]/g
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Object.assign(params, { wts: curr_time }) // 添加 wts 字段
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// 按照 key 重排参数
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const query = Object
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.keys(params)
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.sort()
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.map(key => {
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// 过滤 value 中的 "!'()*" 字符
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const value = params[key].toString().replace(chr_filter, '')
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return `${encodeURIComponent(key)}=${encodeURIComponent(value)}`
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})
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query = query.join('&')
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const wbi_sign = md5(query + mixin_key) // 计算 w_rid
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return query + '&w_rid=' + wbi_sign
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.join('&')
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const wbi_sign = md5(query + mixin_key) // 计算 w_rid
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return query + '&w_rid=' + wbi_sign
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}
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// 获取最新的 img_key 和 sub_key
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async function getWbiKeys() {
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const resp = await axios({
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url: 'https://api.bilibili.com/x/web-interface/nav',
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method: 'get',
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responseType: 'json'
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}),
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json_content = resp.data,
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img_url = json_content.data.wbi_img.img_url,
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sub_url = json_content.data.wbi_img.sub_url
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return {
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img_key: img_url.slice(
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img_url.lastIndexOf('/') + 1,
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img_url.lastIndexOf('.')
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),
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sub_key: sub_url.slice(
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sub_url.lastIndexOf('/') + 1,
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sub_url.lastIndexOf('.')
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)
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const res = await fetch('https://api.bilibili.com/x/web-interface/nav', {
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headers: {
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// SESSDATA 字段
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Cookie: "SESSDATA=xxxxxx"
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}
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})
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const { data: { wbi_img: { img_url, sub_url } } } = await res.json()
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return {
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img_key: img_url.slice(
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img_url.lastIndexOf('/') + 1,
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img_url.lastIndexOf('.')
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),
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sub_key: sub_url.slice(
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sub_url.lastIndexOf('/') + 1,
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sub_url.lastIndexOf('.')
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)
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}
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}
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getWbiKeys().then((wbi_keys) => {
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const query = encWbi(
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{
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foo: '114',
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bar: '514',
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baz: 1919810
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},
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wbi_keys.img_key,
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wbi_keys.sub_key
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)
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console.log(query)
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})
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async function main() {
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const web_keys = await getWbiKeys()
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const params = { foo: '114', bar: '514', baz: 1919810 },
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img_key = web_keys.img_key,
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sub_key = web_keys.sub_key
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const query = encWbi(params, img_key, sub_key)
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console.log(query)
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}
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main()
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```
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输出内容为进行 Wbi 签名的后参数的 url query 形式
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@ -714,5 +706,113 @@ class Bilibili {
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$c = new Bilibili();
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echo $c->reQuery(['foo' => '114', 'bar' => '514', 'baz' => 1919810]);
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// bar=514&baz=1919810&foo=114&wts=1700384803&w_rid=4614cb98d60a43e50c3a3033fe3d116b
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```
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### Rust
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需要 serde、serde_json、reqwest、tokio 以及 md5
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```rust
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use reqwest::header::USER_AGENT;
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use serde::Deserialize;
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use std::time::{SystemTime, UNIX_EPOCH};
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const MIXIN_KEY_ENC_TAB: [usize; 64] = [
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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,
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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,
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54, 21, 56, 59, 6, 63, 57, 62, 11, 36, 20, 34, 44, 52,
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];
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#[derive(Deserialize)]
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struct WbiImg {
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img_url: String,
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sub_url: String,
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}
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#[derive(Deserialize)]
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struct Data {
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wbi_img: WbiImg,
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}
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#[derive(Deserialize)]
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struct ResWbi {
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data: Data,
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}
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// 对 imgKey 和 subKey 进行字符顺序打乱编码
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fn get_mixin_key(orig: &[u8]) -> String {
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MIXIN_KEY_ENC_TAB
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.iter()
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.map(|&i| orig[i] as char)
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.collect::<String>()
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}
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fn get_url_encoded(s: &str) -> String {
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s.chars()
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.filter_map(|c| match c.is_ascii_alphanumeric() || "-_.~".contains(c) {
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true => Some(c.to_string()),
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false => {
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// 过滤 value 中的 "!'()*" 字符
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if "!'()*".contains(c) {
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return None;
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}
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let encoded = c
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.encode_utf8(&mut [0; 4])
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.bytes()
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.fold("".to_string(), |acc, b| acc + &format!("%{:02X}", b));
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Some(encoded)
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}
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})
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.collect::<String>()
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}
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// 为请求参数进行 wbi 签名
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fn encode_wbi(params: &mut Vec<(&str, String)>, (img_key, sub_key): (String, String)) -> String {
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let mixin_key = get_mixin_key((img_key + &sub_key).as_bytes());
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let cur_time = match SystemTime::now().duration_since(UNIX_EPOCH) {
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Ok(t) => t.as_secs(),
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Err(_) => panic!("SystemTime before UNIX EPOCH!"),
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};
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// 添加当前时间戳
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params.push(("wts", cur_time.to_string()));
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// 重新排序
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params.sort_by(|a, b| a.0.cmp(b.0));
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let query = params.iter().fold(String::from(""), |acc, (k, v)| {
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acc + format!("{}={}&", get_url_encoded(k), get_url_encoded(v)).as_str()
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});
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let web_sign = format!("{:?}", md5::compute(query.clone() + &mixin_key));
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query + &format!("w_rid={}", web_sign)
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}
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async fn get_wbi_keys() -> Result<(String, String), reqwest::Error> {
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let client = reqwest::Client::new();
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let ResWbi { data:Data{wbi_img} } = client
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.get("https://api.bilibili.com/x/web-interface/nav")
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.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")
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// SESSDATA=xxxxx
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.header("Cookie", "SESSDATA=xxxxx")
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.send()
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.await?
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.json::<ResWbi>()
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.await?;
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Ok((wbi_img.img_url, wbi_img.sub_url))
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}
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#[tokio::main]
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async fn main() {
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let urls = get_wbi_keys().await.unwrap();
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let mut params = vec![
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("foo", String::from("114")),
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("bar", String::from("514")),
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("baz", String::from("1919810")),
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];
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let query = encode_wbi(&mut params, urls);
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println!("{}", query);
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}
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```
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