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forgejo/services/auth/auth.go
Gusted f69fc23d4b
[SECURITY] Rework long-term authentication
- This is a 'front-port' of the already existing patch on v1.21 and
v1.20, but applied on top of what Gitea has done to rework the LTA
mechanism. Forgejo will stick with the reworked mechanism by the Forgejo
Security team for the time being. The removal of legacy code (AES-GCM) has been
left out.
- The current architecture is inherently insecure, because you can
construct the 'secret' cookie value with values that are available in
the database. Thus provides zero protection when a database is
dumped/leaked.
- This patch implements a new architecture that's inspired from: [Paragonie Initiative](https://paragonie.com/blog/2015/04/secure-authentication-php-with-long-term-persistence#secure-remember-me-cookies).
- Integration testing is added to ensure the new mechanism works.
- Removes a setting, because it's not used anymore.

(cherry picked from commit e3d6622a63)
(cherry picked from commit fef1a6dac5)
(cherry picked from commit b0c5165145)
(cherry picked from commit 7ad51b9f8d)
(cherry picked from commit 64f053f383)
(cherry picked from commit f5e78e4c20)

Conflicts:
	services/auth/auth_token_test.go
	https://codeberg.org/forgejo/forgejo/pulls/2069
2024-01-01 13:50:30 +01:00

97 lines
3.1 KiB
Go

// Copyright 2014 The Gogs Authors. All rights reserved.
// Copyright 2019 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package auth
import (
"fmt"
"net/http"
"regexp"
"strings"
user_model "code.gitea.io/gitea/models/user"
"code.gitea.io/gitea/modules/auth/webauthn"
gitea_context "code.gitea.io/gitea/modules/context"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/session"
"code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/modules/web/middleware"
)
// Init should be called exactly once when the application starts to allow plugins
// to allocate necessary resources
func Init() {
webauthn.Init()
}
// isAttachmentDownload check if request is a file download (GET) with URL to an attachment
func isAttachmentDownload(req *http.Request) bool {
return strings.HasPrefix(req.URL.Path, "/attachments/") && req.Method == "GET"
}
// isContainerPath checks if the request targets the container endpoint
func isContainerPath(req *http.Request) bool {
return strings.HasPrefix(req.URL.Path, "/v2/")
}
var (
gitRawOrAttachPathRe = regexp.MustCompile(`^/[a-zA-Z0-9_.-]+/[a-zA-Z0-9_.-]+/(?:(?:git-(?:(?:upload)|(?:receive))-pack$)|(?:info/refs$)|(?:HEAD$)|(?:objects/)|(?:raw/)|(?:releases/download/)|(?:attachments/))`)
lfsPathRe = regexp.MustCompile(`^/[a-zA-Z0-9_.-]+/[a-zA-Z0-9_.-]+/info/lfs/`)
)
func isGitRawOrAttachPath(req *http.Request) bool {
return gitRawOrAttachPathRe.MatchString(req.URL.Path)
}
func isGitRawOrAttachOrLFSPath(req *http.Request) bool {
if isGitRawOrAttachPath(req) {
return true
}
if setting.LFS.StartServer {
return lfsPathRe.MatchString(req.URL.Path)
}
return false
}
// handleSignIn clears existing session variables and stores new ones for the specified user object
func handleSignIn(resp http.ResponseWriter, req *http.Request, sess SessionStore, user *user_model.User) {
// We need to regenerate the session...
newSess, err := session.RegenerateSession(resp, req)
if err != nil {
log.Error(fmt.Sprintf("Error regenerating session: %v", err))
} else {
sess = newSess
}
_ = sess.Delete("openid_verified_uri")
_ = sess.Delete("openid_signin_remember")
_ = sess.Delete("openid_determined_email")
_ = sess.Delete("openid_determined_username")
_ = sess.Delete("twofaUid")
_ = sess.Delete("twofaRemember")
_ = sess.Delete("webauthnAssertion")
_ = sess.Delete("linkAccount")
err = sess.Set("uid", user.ID)
if err != nil {
log.Error(fmt.Sprintf("Error setting session: %v", err))
}
// Language setting of the user overwrites the one previously set
// If the user does not have a locale set, we save the current one.
if len(user.Language) == 0 {
lc := middleware.Locale(resp, req)
user.Language = lc.Language()
if err := user_model.UpdateUserCols(req.Context(), user, "language"); err != nil {
log.Error(fmt.Sprintf("Error updating user language [user: %d, locale: %s]", user.ID, user.Language))
return
}
}
middleware.SetLocaleCookie(resp, user.Language, 0)
// Clear whatever CSRF has right now, force to generate a new one
if ctx := gitea_context.GetWebContext(req); ctx != nil {
ctx.Csrf.DeleteCookie(ctx)
}
}