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pkg/token/README.md
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pkg/token/README.md
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## 与 UrlSign 对应的 PHP 加密算法
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```php
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// 对 params key 进行排序
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ksort($params);
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// 对 sortParams 进行 Encode
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$sortParamsEncode = http_build_query($params);
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// 加密字符串规则 path + method + sortParamsEncode + secret
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$encryptStr = $path . $method . $sortParamsEncode . $secret
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// 对加密字符串进行 md5
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$md5Str = md5($encryptStr);
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// 对 md5Str 进行 base64 encode
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$tokenString = base64_encode($md5Str);
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echo $tokenString;
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```
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pkg/token/token.go
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pkg/token/token.go
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package token
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import (
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"net/url"
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"time"
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"github.com/golang-jwt/jwt/v4"
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)
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var _ Token = (*token)(nil)
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type Token interface {
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// i 为了避免被其他包实现
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i()
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// JwtSign JWT 签名方式
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JwtSign(userId, subject string, expireDuration time.Duration) (tokenString string, err error)
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JwtParse(tokenString string) (*jwt.RegisteredClaims, error)
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// UrlSign URL 签名方式,不支持解密
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UrlSign(path string, method string, params url.Values) (tokenString string, err error)
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}
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type token struct {
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secret string
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domain []string
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}
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func New(secret string, domain ...string) Token {
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return &token{
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secret: secret,
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domain: domain,
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}
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}
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func (t *token) i() {}
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pkg/token/token_jwt.go
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pkg/token/token_jwt.go
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package token
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import (
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"github.com/golang-jwt/jwt/v4"
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"time"
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)
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func (t *token) JwtSign(userId, subject string, expireDuration time.Duration) (tokenString string, err error) {
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// The token content.
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// iss: (Issuer)签发者
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// iat: (Issued At)签发时间,用Unix时间戳表示
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// exp: (Expiration Time)过期时间,用Unix时间戳表示
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// aud: (Audience)接收该JWT的一方
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// sub: (Subject)该JWT的主题
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// nbf: (Not Before)不要早于这个时间
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// jti: (JWT ID)用于标识JWT的唯一ID
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c := &jwt.RegisteredClaims{
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Issuer: "BvBeJ",
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Subject: subject,
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Audience: jwt.ClaimStrings(t.domain),
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ExpiresAt: jwt.NewNumericDate(time.Now().Add(expireDuration)),
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NotBefore: jwt.NewNumericDate(time.Now()),
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IssuedAt: jwt.NewNumericDate(time.Now()),
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ID: userId,
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}
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tokenString, err = jwt.NewWithClaims(jwt.SigningMethodHS256, c).SignedString([]byte(t.secret))
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return
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}
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func (t *token) JwtParse(tokenString string) (*jwt.RegisteredClaims, error) {
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tokenClaims, err := jwt.ParseWithClaims(tokenString, &jwt.RegisteredClaims{}, func(token *jwt.Token) (any, error) {
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return []byte(t.secret), nil
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})
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if tokenClaims != nil {
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if c, ok := tokenClaims.Claims.(*jwt.RegisteredClaims); ok && tokenClaims.Valid {
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return c, nil
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}
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}
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return nil, err
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}
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pkg/token/token_url.go
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pkg/token/token_url.go
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package token
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import (
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"crypto/md5"
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"encoding/base64"
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"encoding/hex"
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"errors"
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"fmt"
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"net/url"
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"strings"
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)
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// UrlSign
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// path 请求的路径 (不附带 querystring)
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func (t *token) UrlSign(path string, method string, params url.Values) (tokenString string, err error) {
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// 合法的 Methods
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methods := map[string]bool{
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"get": true,
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"post": true,
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"put": true,
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"path": true,
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"delete": true,
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"head": true,
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"options": true,
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}
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methodName := strings.ToLower(method)
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if !methods[methodName] {
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err = errors.New("method param error")
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return
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}
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// Encode() 方法中自带 sorted by key
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sortParamsEncode := params.Encode()
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// 加密字符串规则 path + method + sortParamsEncode + secret
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encryptStr := fmt.Sprintf("%s%s%s%s", path, methodName, sortParamsEncode, t.secret)
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// 对加密字符串进行 md5
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s := md5.New()
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s.Write([]byte(encryptStr))
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md5Str := hex.EncodeToString(s.Sum(nil))
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// 对 md5Str 进行 base64 encode
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tokenString = base64.StdEncoding.EncodeToString([]byte(md5Str))
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return
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}
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