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googleoauth2.go
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googleoauth2.go
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package auth
import (
"encoding/json"
"fmt"
"net/http"
"github.com/adriamb/runes/server/instance"
"github.com/gin-gonic/gin"
)
type userinfoStruct struct {
Email string `json:"email"`
FamilyName string `json:"family_name"`
Gender string `json:"gender"`
GivenName string `json:"given_name"`
ID string `json:"id"`
Link string `json:"link"`
Name string `json:"name"`
Picture string `json:"picture"`
VerifiedEmail bool `json:"verified_email"`
}
func getEmailFromGoogle(accessToken string) (string, error) {
client := &http.Client{}
url := "https://www.googleapis.com/oauth2/v1/userinfo"
res, err := client.Get(url + "?access_token=" + accessToken)
if err != nil {
return "", err
}
defer res.Body.Close()
decoder := json.NewDecoder(res.Body)
var userinfo userinfoStruct
err = decoder.Decode(&userinfo)
if err != nil {
return "", err
}
return userinfo.Email, nil
}
// AuthorizeGoogleOauth2 adds new autorization cookie from a oauth token
func (a *Auth) AuthorizeGoogleOauth2(c *gin.Context, oauthToken string) error {
email, err := getEmailFromGoogle(oauthToken)
if err != nil {
return err
}
var found *string
for _, allowed := range instance.Srv.Config.Auth.AllowedEmails {
if email == allowed {
found = &allowed
break
}
}
if found == nil {
return fmt.Errorf("Bad email %v", email)
}
a.Authorize(c)
return nil
}