wg-portal/internal/app/auth/auth_oauth.go

121 lines
3.1 KiB
Go

package auth
import (
"context"
"encoding/json"
"fmt"
"io"
"net/http"
"time"
"github.com/h44z/wg-portal/internal/config"
"github.com/h44z/wg-portal/internal/domain"
"github.com/sirupsen/logrus"
"golang.org/x/oauth2"
)
type PlainOauthAuthenticator struct {
name string
cfg *oauth2.Config
userInfoEndpoint string
client *http.Client
userInfoMapping config.OauthFields
userAdminMapping *config.OauthAdminMapping
registrationEnabled bool
userInfoLogging bool
}
func newPlainOauthAuthenticator(
_ context.Context,
callbackUrl string,
cfg *config.OAuthProvider,
) (*PlainOauthAuthenticator, error) {
var provider = &PlainOauthAuthenticator{}
provider.name = cfg.ProviderName
provider.client = &http.Client{
Timeout: time.Second * 10,
}
provider.cfg = &oauth2.Config{
ClientID: cfg.ClientID,
ClientSecret: cfg.ClientSecret,
Endpoint: oauth2.Endpoint{
AuthURL: cfg.AuthURL,
TokenURL: cfg.TokenURL,
AuthStyle: oauth2.AuthStyleAutoDetect,
},
RedirectURL: callbackUrl,
Scopes: cfg.Scopes,
}
provider.userInfoEndpoint = cfg.UserInfoURL
provider.userInfoMapping = getOauthFieldMapping(cfg.FieldMap)
provider.userAdminMapping = &cfg.AdminMapping
provider.registrationEnabled = cfg.RegistrationEnabled
provider.userInfoLogging = cfg.LogUserInfo
return provider, nil
}
func (p PlainOauthAuthenticator) GetName() string {
return p.name
}
func (p PlainOauthAuthenticator) RegistrationEnabled() bool {
return p.registrationEnabled
}
func (p PlainOauthAuthenticator) GetType() domain.AuthenticatorType {
return domain.AuthenticatorTypeOAuth
}
func (p PlainOauthAuthenticator) AuthCodeURL(state string, opts ...oauth2.AuthCodeOption) string {
return p.cfg.AuthCodeURL(state, opts...)
}
func (p PlainOauthAuthenticator) Exchange(
ctx context.Context,
code string,
opts ...oauth2.AuthCodeOption,
) (*oauth2.Token, error) {
return p.cfg.Exchange(ctx, code, opts...)
}
func (p PlainOauthAuthenticator) GetUserInfo(
ctx context.Context,
token *oauth2.Token,
_ string,
) (map[string]interface{}, error) {
req, err := http.NewRequest("GET", p.userInfoEndpoint, nil)
if err != nil {
return nil, fmt.Errorf("failed to create user info get request: %w", err)
}
req.Header.Add("Authorization", "Bearer "+token.AccessToken)
req.WithContext(ctx)
response, err := p.client.Do(req)
if err != nil {
return nil, fmt.Errorf("failed to get user info: %w", err)
}
defer response.Body.Close()
contents, err := io.ReadAll(response.Body)
if err != nil {
return nil, fmt.Errorf("failed to read response body: %w", err)
}
var userFields map[string]interface{}
err = json.Unmarshal(contents, &userFields)
if err != nil {
return nil, fmt.Errorf("failed to parse user info: %w", err)
}
if p.userInfoLogging {
logrus.Tracef("User info from OAuth source %s: %v", p.name, string(contents))
}
return userFields, nil
}
func (p PlainOauthAuthenticator) ParseUserInfo(raw map[string]interface{}) (*domain.AuthenticatorUserInfo, error) {
return parseOauthUserInfo(p.userInfoMapping, p.userAdminMapping, raw)
}