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access_token.go
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/
access_token.go
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package configuration
import (
"encoding/base64"
"encoding/json"
"strings"
"unicode/utf8"
)
type TokenInfo struct {
Username string `json:"user_name"`
Email string `json:"email"`
UserGuid string `json:"user_id"`
}
func NewTokenInfo(accessToken string) (info TokenInfo) {
tokenJson, err := DecodeAccessToken(accessToken)
if err != nil {
return
}
info = TokenInfo{}
err = json.Unmarshal(tokenJson, &info)
return
}
func DecodeAccessToken(accessToken string) (tokenJson []byte, err error) {
tokenParts := strings.Split(accessToken, " ")
if len(tokenParts) < 2 {
return
}
token := tokenParts[1]
encodedParts := strings.Split(token, ".")
if len(encodedParts) < 3 {
return
}
encodedTokenJson := encodedParts[1]
return base64Decode(encodedTokenJson)
}
func base64Decode(encodedData string) ([]byte, error) {
return base64.StdEncoding.DecodeString(restorePadding(encodedData))
}
func restorePadding(seg string) string {
switch utf8.RuneCountInString(seg) % 4 {
case 2:
seg = seg + "=="
case 3:
seg = seg + "==="
}
return seg
}