forked from qvest-digital/loginsrv
/
google.go
78 lines (63 loc) · 2.07 KB
/
google.go
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package oauth2
import (
"encoding/json"
"fmt"
"io/ioutil"
"net/http"
"strings"
"github.com/tarent/loginsrv/model"
)
var googleUserinfoEndpoint = "https://www.googleapis.com/oauth2/v3/userinfo"
func init() {
RegisterProvider(providerGoogle)
}
type GoogleUser struct {
Name string `json:"name"`
Email string `json:"email"`
EmailVerified bool `json:"email_verified"`
Picture string `json:"picture"`
HostedGsuiteDomain string `json:"hd"`
}
var providerGoogle = Provider{
Name: "google",
AuthURL: "https://accounts.google.com/o/oauth2/v2/auth",
TokenURL: "https://www.googleapis.com/oauth2/v4/token",
DefaultScopes: "email profile",
GetUserInfo: func(token TokenInfo) (model.UserInfo, string, error) {
gu := GoogleUser{}
url := fmt.Sprintf("%v?access_token=%v", googleUserinfoEndpoint, token.AccessToken)
resp, err := http.Get(url)
if err != nil {
return model.UserInfo{}, "", err
}
defer resp.Body.Close()
if !strings.Contains(resp.Header.Get("Content-Type"), "application/json") {
return model.UserInfo{}, "", fmt.Errorf("wrong content-type on google get user info: %v", resp.Header.Get("Content-Type"))
}
if resp.StatusCode != 200 {
return model.UserInfo{}, "", fmt.Errorf("got http status %v on google get user info", resp.StatusCode)
}
b, err := ioutil.ReadAll(resp.Body)
if err != nil {
return model.UserInfo{}, "", fmt.Errorf("error reading google get user info: %v", err)
}
err = json.Unmarshal(b, &gu)
if err != nil {
return model.UserInfo{}, "", fmt.Errorf("error parsing google get user info: %v", err)
}
if len(gu.Email) == 0 {
return model.UserInfo{}, "", fmt.Errorf("invalid google response: no email address returned.")
}
if !gu.EmailVerified {
return model.UserInfo{}, "", fmt.Errorf("invalid google response: users email address not verified by google.")
}
return model.UserInfo{
Sub: gu.Email,
Picture: gu.Picture,
Name: gu.Name,
Email: gu.Email,
Origin: "google",
Domain: gu.HostedGsuiteDomain,
}, string(b), nil
},
}