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update io and time (#769)

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PACI 2023-08-11 10:00:36 +08:00 committed by GitHub
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docs/misc/sign/wbi.md
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@ -279,147 +279,163 @@ bar=514&baz=1919810&foo=114&wts=1684805578&w_rid=bb97e15f28edf445a0e4420d36f0157
package main package main
import ( import (
"crypto/md5" "crypto/md5"
"encoding/hex" "encoding/hex"
"fmt" "fmt"
"io/ioutil" "io"
"net/http" "net/http"
"net/url" "net/url"
"sort" "sort"
"strconv" "strconv"
"strings" "strings"
"sync" "sync"
"time" "time"
"github.com/tidwall/gjson" "github.com/tidwall/gjson"
) )
var mixinKeyEncTab = []int{ var (
46, 47, 18, 2, 53, 8, 23, 32, 15, 50, 10, 31, 58, 3, 45, 35, 27, 43, 5, 49, mixinKeyEncTab = []int{
33, 9, 42, 19, 29, 28, 14, 39, 12, 38, 41, 13, 37, 48, 7, 16, 24, 55, 40, 46, 47, 18, 2, 53, 8, 23, 32, 15, 50, 10, 31, 58, 3, 45, 35, 27, 43, 5, 49,
61, 26, 17, 0, 1, 60, 51, 30, 4, 22, 25, 54, 21, 56, 59, 6, 63, 57, 62, 11, 33, 9, 42, 19, 29, 28, 14, 39, 12, 38, 41, 13, 37, 48, 7, 16, 24, 55, 40,
36, 20, 34, 44, 52, 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,
}
cache sync.Map
lastUpdateTime time.Time
)
func main() {
urlStr := "https://api.bilibili.com/x/space/wbi/acc/info?mid=1850091"
newUrlStr, err := signAndGenerateURL(urlStr)
if err != nil {
fmt.Printf("Error: %s", err)
return
}
req, err := http.NewRequest("GET", newUrlStr, nil)
if err != nil {
fmt.Printf("Error: %s", err)
return
}
req.Header.Set("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36")
response, err := http.DefaultClient.Do(req)
if err != nil {
fmt.Printf("Request failed: %s", err)
return
}
defer response.Body.Close()
body, err := io.ReadAll(response.Body)
if err != nil {
fmt.Printf("Failed to read response: %s", err)
return
}
fmt.Println(string(body))
}
func signAndGenerateURL(urlStr string) (string, error) {
urlObj, err := url.Parse(urlStr)
if err != nil {
return "", err
}
imgKey, subKey := getWbiKeysCached()
query := urlObj.Query()
params := map[string]string{}
for k, v := range query {
params[k] = v[0]
}
newParams := encWbi(params, imgKey, subKey)
for k, v := range newParams {
query.Set(k, v)
}
urlObj.RawQuery = query.Encode()
newUrlStr := urlObj.String()
return newUrlStr, nil
}
func encWbi(params map[string]string, imgKey, subKey string) map[string]string {
mixinKey := getMixinKey(imgKey + subKey)
currTime := strconv.FormatInt(time.Now().Unix(), 10)
params["wts"] = currTime
// Sort keys
keys := make([]string, 0, len(params))
for k := range params {
keys = append(keys, k)
}
sort.Strings(keys)
// Remove unwanted characters
for k, v := range params {
v = sanitizeString(v)
params[k] = v
}
// Build URL parameters
query := url.Values{}
for _, k := range keys {
query.Set(k, params[k])
}
queryStr := query.Encode()
// Calculate w_rid
hash := md5.Sum([]byte(queryStr + mixinKey))
params["w_rid"] = hex.EncodeToString(hash[:])
return params
} }
func getMixinKey(orig string) string { func getMixinKey(orig string) string {
var str strings.Builder var str strings.Builder
for _, v := range mixinKeyEncTab { for _, v := range mixinKeyEncTab {
if v < len(orig) { if v < len(orig) {
str.WriteByte(orig[v]) str.WriteByte(orig[v])
} }
} }
return str.String()[:32] return str.String()[:32]
}
func EncWbi(params map[string]string, imgKey string, subKey string) map[string]string {
mixinKey := getMixinKey(imgKey + subKey)
currTime := strconv.FormatInt(time.Now().Unix(), 10)
params["wts"] = currTime
// Sort keys
keys := make([]string, 0, len(params))
for k := range params {
keys = append(keys, k)
}
sort.Strings(keys)
// Remove unwanted characters
for k, v := range params {
v = strings.ReplaceAll(v, "!", "")
v = strings.ReplaceAll(v, "'", "")
v = strings.ReplaceAll(v, "(", "")
v = strings.ReplaceAll(v, ")", "")
v = strings.ReplaceAll(v, "*", "")
params[k] = v
}
// Build URL parameters
var str strings.Builder
for _, k := range keys {
str.WriteString(fmt.Sprintf("%s=%s&", k, params[k]))
}
query := strings.TrimSuffix(str.String(), "&")
// Calculate w_rid
hash := md5.Sum([]byte(query + mixinKey))
params["w_rid"] = hex.EncodeToString(hash[:])
return params
} }
var cache sync.Map func sanitizeString(s string) string {
var lastUpdateTime time.Time unwantedChars := []string{"!", "'", "(", ")", "*"}
for _, char := range unwantedChars {
s = strings.ReplaceAll(s, char, "")
}
return s
}
func updateCache() { func updateCache() {
if time.Now().Sub(lastUpdateTime).Minutes() < 10 { if time.Since(lastUpdateTime).Minutes() < 10 {
return return
} }
imgKey, subKey := GetWbiKeys() imgKey, subKey := getWbiKeys()
cache.Store("imgKey", imgKey) cache.Store("imgKey", imgKey)
cache.Store("subKey", subKey) cache.Store("subKey", subKey)
lastUpdateTime = time.Now() lastUpdateTime = time.Now()
} }
func GetWbiKeysCached() (string, string) { func getWbiKeysCached() (string, string) {
updateCache() updateCache()
imgKeyI, _ := cache.Load("imgKey") imgKeyI, _ := cache.Load("imgKey")
subKeyI, _ := cache.Load("subKey") subKeyI, _ := cache.Load("subKey")
return imgKeyI.(string), subKeyI.(string) return imgKeyI.(string), subKeyI.(string)
} }
func GetWbiKeys() (string, string) { func getWbiKeys() (string, string) {
resp, err := http.Get("https://api.bilibili.com/x/web-interface/nav") resp, err := http.Get("https://api.bilibili.com/x/web-interface/nav")
if err != nil { if err != nil {
fmt.Println("Error:", err) fmt.Printf("Error: %s", err)
return "", "" return "", ""
} }
defer resp.Body.Close() defer resp.Body.Close()
body, err := ioutil.ReadAll(resp.Body) body, err := io.ReadAll(resp.Body)
if err != nil { if err != nil {
fmt.Println("Error:", err) fmt.Printf("Error: %s", err)
return "", "" return "", ""
} }
json := string(body) json := string(body)
imgURL := gjson.Get(json, "data.wbi_img.img_url").String() imgURL := gjson.Get(json, "data.wbi_img.img_url").String()
subURL := gjson.Get(json, "data.wbi_img.sub_url").String() subURL := gjson.Get(json, "data.wbi_img.sub_url").String()
imgKey := strings.Split(strings.Split(imgURL, "/")[len(strings.Split(imgURL, "/"))-1], ".")[0] imgKey := strings.Split(strings.Split(imgURL, "/")[len(strings.Split(imgURL, "/"))-1], ".")[0]
subKey := strings.Split(strings.Split(subURL, "/")[len(strings.Split(subURL, "/"))-1], ".")[0] subKey := strings.Split(strings.Split(subURL, "/")[len(strings.Split(subURL, "/"))-1], ".")[0]
return imgKey, subKey return imgKey, subKey
}
func SignURL(urlStr string) string {
urlObj, _ := url.Parse(urlStr)
imgKey, subKey := GetWbiKeysCached()
fmt.Println(imgKey, subKey)
query := urlObj.Query()
params := map[string]string{}
for k, v := range query {
params[k] = v[0]
}
newParams := EncWbi(params, imgKey, subKey)
for k, v := range newParams {
query.Set(k, v)
}
urlObj.RawQuery = query.Encode()
newUrlStr := urlObj.String()
return newUrlStr
}
func main() {
urlStr := "https://api.bilibili.com/x/space/wbi/acc/info?mid=1850091"
newUrlStr := utils.SignURL(urlStr) // 签名
req, err := http.NewRequest("GET", newUrlStr, nil)
if err != nil {
return nil, err
}
// 设置请求头，模拟浏览器
req.Header.Set("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36")
response, err := http.DefaultClient.Do(req)
fmt.Println(newUrlStr)
if err != nil {
fmt.Printf("请求发送失败：%s", err)
return nil, err
}
defer response.Body.Close()
body, err := ioutil.ReadAll(response.Body)
if err != nil {
fmt.Printf("读取响应失败：%s", err)
return nil, err
}
fmt.Println(string(body))
} }
``` ```