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// Copyright 2021 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package setting
import (
"math"
"path/filepath"
"sync/atomic"
"code.gitea.io/gitea/modules/generate"
"code.gitea.io/gitea/modules/log"
)
// OAuth2UsernameType is enum describing the way gitea 'name' should be generated from oauth2 data
type OAuth2UsernameType string
const (
// OAuth2UsernameUserid oauth2 userid field will be used as gitea name
OAuth2UsernameUserid OAuth2UsernameType = "userid"
// OAuth2UsernameNickname oauth2 nickname field will be used as gitea name
OAuth2UsernameNickname OAuth2UsernameType = "nickname"
// OAuth2UsernameEmail username of oauth2 email field will be used as gitea name
OAuth2UsernameEmail OAuth2UsernameType = "email"
)
func (username OAuth2UsernameType) isValid() bool {
switch username {
case OAuth2UsernameUserid, OAuth2UsernameNickname, OAuth2UsernameEmail:
return true
}
return false
}
// OAuth2AccountLinkingType is enum describing behaviour of linking with existing account
type OAuth2AccountLinkingType string
const (
// OAuth2AccountLinkingDisabled error will be displayed if account exist
OAuth2AccountLinkingDisabled OAuth2AccountLinkingType = "disabled"
// OAuth2AccountLinkingLogin account linking login will be displayed if account exist
OAuth2AccountLinkingLogin OAuth2AccountLinkingType = "login"
// OAuth2AccountLinkingAuto account will be automatically linked if account exist
OAuth2AccountLinkingAuto OAuth2AccountLinkingType = "auto"
)
func (accountLinking OAuth2AccountLinkingType) isValid() bool {
switch accountLinking {
case OAuth2AccountLinkingDisabled, OAuth2AccountLinkingLogin, OAuth2AccountLinkingAuto:
return true
}
return false
}
// OAuth2Client settings
var OAuth2Client struct {
RegisterEmailConfirm bool
OpenIDConnectScopes []string
EnableAutoRegistration bool
Username OAuth2UsernameType
UpdateAvatar bool
AccountLinking OAuth2AccountLinkingType
}
func loadOAuth2ClientFrom(rootCfg ConfigProvider) {
sec := rootCfg.Section("oauth2_client")
OAuth2Client.RegisterEmailConfirm = sec.Key("REGISTER_EMAIL_CONFIRM").MustBool(Service.RegisterEmailConfirm)
OAuth2Client.OpenIDConnectScopes = parseScopes(sec, "OPENID_CONNECT_SCOPES")
OAuth2Client.EnableAutoRegistration = sec.Key("ENABLE_AUTO_REGISTRATION").MustBool()
OAuth2Client.Username = OAuth2UsernameType(sec.Key("USERNAME").MustString(string(OAuth2UsernameNickname)))
if !OAuth2Client.Username.isValid() {
log.Warn("Username setting is not valid: '%s', will fallback to '%s'", OAuth2Client.Username, OAuth2UsernameNickname)
OAuth2Client.Username = OAuth2UsernameNickname
}
OAuth2Client.UpdateAvatar = sec.Key("UPDATE_AVATAR").MustBool()
OAuth2Client.AccountLinking = OAuth2AccountLinkingType(sec.Key("ACCOUNT_LINKING").MustString(string(OAuth2AccountLinkingLogin)))
if !OAuth2Client.AccountLinking.isValid() {
log.Warn("Account linking setting is not valid: '%s', will fallback to '%s'", OAuth2Client.AccountLinking, OAuth2AccountLinkingLogin)
OAuth2Client.AccountLinking = OAuth2AccountLinkingLogin
}
}
func parseScopes(sec ConfigSection, name string) []string {
parts := sec.Key(name).Strings(" ")
scopes := make([]string, 0, len(parts))
for _, scope := range parts {
if scope != "" {
scopes = append(scopes, scope)
}
}
return scopes
}
var OAuth2 = struct {
Enabled bool
AccessTokenExpirationTime int64
RefreshTokenExpirationTime int64
InvalidateRefreshTokens bool
JWTSigningAlgorithm string `ini:"JWT_SIGNING_ALGORITHM"`
JWTSigningPrivateKeyFile string `ini:"JWT_SIGNING_PRIVATE_KEY_FILE"`
MaxTokenLength int
DefaultApplications []string
EnableAdditionalGrantScopes bool
}{
Enabled: true,
AccessTokenExpirationTime: 3600,
RefreshTokenExpirationTime: 730,
InvalidateRefreshTokens: true,
JWTSigningAlgorithm: "RS256",
JWTSigningPrivateKeyFile: "jwt/private.pem",
MaxTokenLength: math.MaxInt16,
DefaultApplications: []string{"git-credential-oauth", "git-credential-manager", "tea"},
EnableAdditionalGrantScopes: false,
}
func loadOAuth2From(rootCfg ConfigProvider) {
sec := rootCfg.Section("oauth2")
if err := sec.MapTo(&OAuth2); err != nil {
log.Fatal("Failed to map OAuth2 settings: %v", err)
return
}
// Handle the rename of ENABLE to ENABLED
deprecatedSetting(rootCfg, "oauth2", "ENABLE", "oauth2", "ENABLED", "v1.23.0")
if sec.HasKey("ENABLE") && !sec.HasKey("ENABLED") {
OAuth2.Enabled = sec.Key("ENABLE").MustBool(OAuth2.Enabled)
}
if !filepath.IsAbs(OAuth2.JWTSigningPrivateKeyFile) {
OAuth2.JWTSigningPrivateKeyFile = filepath.Join(AppDataPath, OAuth2.JWTSigningPrivateKeyFile)
}
// FIXME: at the moment, no matter oauth2 is enabled or not, it must generate a "oauth2 JWT_SECRET"
// Because this secret is also used as GeneralTokenSigningSecret (as a quick not-that-breaking fix for some legacy problems).
// Including: CSRF token, account validation token, etc ...
// In main branch, the signing token should be refactored (eg: one unique for LFS/OAuth2/etc ...)
jwtSecretBase64 := loadSecret(sec, "JWT_SECRET_URI", "JWT_SECRET")
if InstallLock {
jwtSecretBytes, err := generate.DecodeJwtSecret(jwtSecretBase64)
if err != nil {
jwtSecretBytes, jwtSecretBase64, err = generate.NewJwtSecret()
if err != nil {
log.Fatal("error generating JWT secret: %v", err)
}
saveCfg, err := rootCfg.PrepareSaving()
if err != nil {
log.Fatal("save oauth2.JWT_SECRET failed: %v", err)
}
rootCfg.Section("oauth2").Key("JWT_SECRET").SetValue(jwtSecretBase64)
saveCfg.Section("oauth2").Key("JWT_SECRET").SetValue(jwtSecretBase64)
if err := saveCfg.Save(); err != nil {
log.Fatal("save oauth2.JWT_SECRET failed: %v", err)
}
}
generalSigningSecret.Store(&jwtSecretBytes)
}
}
var generalSigningSecret atomic.Pointer[[]byte]
func GetGeneralTokenSigningSecret() []byte {
old := generalSigningSecret.Load()
if old == nil || len(*old) == 0 {
jwtSecret, _, err := generate.NewJwtSecret()
if err != nil {
log.Fatal("Unable to generate general JWT secret: %v", err)
}
if generalSigningSecret.CompareAndSwap(old, &jwtSecret) {
return jwtSecret
}
return *generalSigningSecret.Load()
}
return *old
}
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