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Add reverseproxy auth for API back with default disabled (#26703)

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This feature was removed by #22219 to avoid possible CSRF attack.

This PR takes reverseproxy auth for API back but with default disabled.

To prevent possbile CSRF attack, the responsibility will be the
reverseproxy but not Gitea itself.

For those want to enable this `ENABLE_REVERSE_PROXY_AUTHENTICATION_API`,
they should know what they are doing.

---------

Co-authored-by: Giteabot <teabot@gitea.io>
This commit is contained in:
Lunny Xiao 2023-09-07 16:31:46 +08:00 committed by GitHub
parent 1221221595
commit e97e883ad5
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GPG Key ID: 4AEE18F83AFDEB23
4 changed files with 14 additions and 3 deletions
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2
custom/conf/app.example.ini
View File

@ -759,6 +759,8 @@ LEVEL = Info
;;
;; More detail: https://github.com/gogits/gogs/issues/165
;ENABLE_REVERSE_PROXY_AUTHENTICATION = false
; Enable this to allow reverse proxy authentication for API requests, the reverse proxy is responsible for ensuring that no CSRF is possible.
;ENABLE_REVERSE_PROXY_AUTHENTICATION_API = false
;ENABLE_REVERSE_PROXY_AUTO_REGISTRATION = false
;ENABLE_REVERSE_PROXY_EMAIL = false
;ENABLE_REVERSE_PROXY_FULL_NAME = false

3
docs/content/administration/config-cheat-sheet.en-us.md
View File

@ -621,7 +621,8 @@ And the following unique queues:
BASIC and the user's password. Please note if you disable this you will not be able to access the
tokens API endpoints using a password. Further, this only disables BASIC authentication using the
password - not tokens or OAuth Basic.
- `ENABLE_REVERSE_PROXY_AUTHENTICATION`: **false**: Enable this to allow reverse proxy authentication.
- `ENABLE_REVERSE_PROXY_AUTHENTICATION`: **false**: Enable this to allow reverse proxy authentication for web requests
- `ENABLE_REVERSE_PROXY_AUTHENTICATION_API`: **false**: Enable this to allow reverse proxy authentication for API requests, the reverse proxy is responsible for ensuring that no CSRF is possible.
- `ENABLE_REVERSE_PROXY_AUTO_REGISTRATION`: **false**: Enable this to allow auto-registration
for reverse authentication.
- `ENABLE_REVERSE_PROXY_EMAIL`: **false**: Enable this to allow to auto-registration with a

2
modules/setting/service.go
View File

@ -46,6 +46,7 @@ var Service = struct {
EnableNotifyMail bool
EnableBasicAuth bool
EnableReverseProxyAuth bool
EnableReverseProxyAuthAPI bool
EnableReverseProxyAutoRegister bool
EnableReverseProxyEmail bool
EnableReverseProxyFullName bool
@ -157,6 +158,7 @@ func loadServiceFrom(rootCfg ConfigProvider) {
Service.RequireSignInView = sec.Key("REQUIRE_SIGNIN_VIEW").MustBool()
Service.EnableBasicAuth = sec.Key("ENABLE_BASIC_AUTHENTICATION").MustBool(true)
Service.EnableReverseProxyAuth = sec.Key("ENABLE_REVERSE_PROXY_AUTHENTICATION").MustBool()
Service.EnableReverseProxyAuthAPI = sec.Key("ENABLE_REVERSE_PROXY_AUTHENTICATION_API").MustBool()
Service.EnableReverseProxyAutoRegister = sec.Key("ENABLE_REVERSE_PROXY_AUTO_REGISTRATION").MustBool()
Service.EnableReverseProxyEmail = sec.Key("ENABLE_REVERSE_PROXY_EMAIL").MustBool()
Service.EnableReverseProxyFullName = sec.Key("ENABLE_REVERSE_PROXY_FULL_NAME").MustBool()

10
routers/api/v1/api.go
View File

@ -333,8 +333,11 @@ func reqExploreSignIn() func(ctx *context.APIContext) {
}
}
func reqBasicAuth() func(ctx *context.APIContext) {
func reqBasicOrRevProxyAuth() func(ctx *context.APIContext) {
return func(ctx *context.APIContext) {
if ctx.IsSigned && setting.Service.EnableReverseProxyAuthAPI && ctx.Data["AuthedMethod"].(string) == auth.ReverseProxyMethodName {
return
}
if !ctx.IsBasicAuth {
ctx.Error(http.StatusUnauthorized, "reqBasicAuth", "auth required")
return
@ -698,6 +701,9 @@ func buildAuthGroup() *auth.Group {
&auth.HTTPSign{},
&auth.Basic{}, // FIXME: this should be removed once we don't allow basic auth in API
)
if setting.Service.EnableReverseProxyAuthAPI {
group.Add(&auth.ReverseProxy{})
}
specialAdd(group)
return group
@ -800,7 +806,7 @@ func Routes() *web.Route {
m.Combo("").Get(user.ListAccessTokens).
Post(bind(api.CreateAccessTokenOption{}), reqToken(), user.CreateAccessToken)
m.Combo("/{id}").Delete(reqToken(), user.DeleteAccessToken)
}, reqBasicAuth())
}, reqBasicOrRevProxyAuth())
m.Get("/activities/feeds", user.ListUserActivityFeeds)
}, context_service.UserAssignmentAPI())