From e68b9d00a6e05b3a941f63ffb696f91e554ac5ec Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel@debian.org>
Date: Fri, 18 Oct 2024 20:33:49 +0200
Subject: Adding upstream version 9.0.3.

Signed-off-by: Daniel Baumann <daniel@debian.org>
---
 services/auth/source/ldap/source_authenticate.go | 124 +++++++++++++++++++++++
 1 file changed, 124 insertions(+)
 create mode 100644 services/auth/source/ldap/source_authenticate.go

(limited to 'services/auth/source/ldap/source_authenticate.go')

diff --git a/services/auth/source/ldap/source_authenticate.go b/services/auth/source/ldap/source_authenticate.go
new file mode 100644
index 0000000..68ecd16
--- /dev/null
+++ b/services/auth/source/ldap/source_authenticate.go
@@ -0,0 +1,124 @@
+// Copyright 2021 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package ldap
+
+import (
+	"context"
+	"fmt"
+	"strings"
+
+	asymkey_model "code.gitea.io/gitea/models/asymkey"
+	"code.gitea.io/gitea/models/auth"
+	user_model "code.gitea.io/gitea/models/user"
+	auth_module "code.gitea.io/gitea/modules/auth"
+	"code.gitea.io/gitea/modules/optional"
+	source_service "code.gitea.io/gitea/services/auth/source"
+	user_service "code.gitea.io/gitea/services/user"
+)
+
+// Authenticate queries if login/password is valid against the LDAP directory pool,
+// and create a local user if success when enabled.
+func (source *Source) Authenticate(ctx context.Context, user *user_model.User, userName, password string) (*user_model.User, error) {
+	loginName := userName
+	if user != nil {
+		loginName = user.LoginName
+	}
+	sr := source.SearchEntry(loginName, password, source.authSource.Type == auth.DLDAP)
+	if sr == nil {
+		// User not in LDAP, do nothing
+		return nil, user_model.ErrUserNotExist{Name: loginName}
+	}
+	// Fallback.
+	if len(sr.Username) == 0 {
+		sr.Username = userName
+	}
+	if len(sr.Mail) == 0 {
+		sr.Mail = fmt.Sprintf("%s@localhost.local", sr.Username)
+	}
+	isAttributeSSHPublicKeySet := len(strings.TrimSpace(source.AttributeSSHPublicKey)) > 0
+
+	// Update User admin flag if exist
+	if isExist, err := user_model.IsUserExist(ctx, 0, sr.Username); err != nil {
+		return nil, err
+	} else if isExist {
+		if user == nil {
+			user, err = user_model.GetUserByName(ctx, sr.Username)
+			if err != nil {
+				return nil, err
+			}
+		}
+		if user != nil && !user.ProhibitLogin {
+			opts := &user_service.UpdateOptions{}
+			if len(source.AdminFilter) > 0 && user.IsAdmin != sr.IsAdmin {
+				// Change existing admin flag only if AdminFilter option is set
+				opts.IsAdmin = optional.Some(sr.IsAdmin)
+			}
+			if !sr.IsAdmin && len(source.RestrictedFilter) > 0 && user.IsRestricted != sr.IsRestricted {
+				// Change existing restricted flag only if RestrictedFilter option is set
+				opts.IsRestricted = optional.Some(sr.IsRestricted)
+			}
+			if opts.IsAdmin.Has() || opts.IsRestricted.Has() {
+				if err := user_service.UpdateUser(ctx, user, opts); err != nil {
+					return nil, err
+				}
+			}
+		}
+	}
+
+	if user != nil {
+		if isAttributeSSHPublicKeySet && asymkey_model.SynchronizePublicKeys(ctx, user, source.authSource, sr.SSHPublicKey) {
+			if err := asymkey_model.RewriteAllPublicKeys(ctx); err != nil {
+				return user, err
+			}
+		}
+	} else {
+		user = &user_model.User{
+			LowerName:   strings.ToLower(sr.Username),
+			Name:        sr.Username,
+			FullName:    composeFullName(sr.Name, sr.Surname, sr.Username),
+			Email:       sr.Mail,
+			LoginType:   source.authSource.Type,
+			LoginSource: source.authSource.ID,
+			LoginName:   userName,
+			IsAdmin:     sr.IsAdmin,
+		}
+		overwriteDefault := &user_model.CreateUserOverwriteOptions{
+			IsRestricted: optional.Some(sr.IsRestricted),
+			IsActive:     optional.Some(true),
+		}
+
+		err := user_model.CreateUser(ctx, user, overwriteDefault)
+		if err != nil {
+			return user, err
+		}
+
+		if isAttributeSSHPublicKeySet && asymkey_model.AddPublicKeysBySource(ctx, user, source.authSource, sr.SSHPublicKey) {
+			if err := asymkey_model.RewriteAllPublicKeys(ctx); err != nil {
+				return user, err
+			}
+		}
+		if len(source.AttributeAvatar) > 0 {
+			if err := user_service.UploadAvatar(ctx, user, sr.Avatar); err != nil {
+				return user, err
+			}
+		}
+	}
+
+	if source.GroupsEnabled && (source.GroupTeamMap != "" || source.GroupTeamMapRemoval) {
+		groupTeamMapping, err := auth_module.UnmarshalGroupTeamMapping(source.GroupTeamMap)
+		if err != nil {
+			return user, err
+		}
+		if err := source_service.SyncGroupsToTeams(ctx, user, sr.Groups, groupTeamMapping, source.GroupTeamMapRemoval); err != nil {
+			return user, err
+		}
+	}
+
+	return user, nil
+}
+
+// IsSkipLocalTwoFA returns if this source should skip local 2fa for password authentication
+func (source *Source) IsSkipLocalTwoFA() bool {
+	return source.SkipLocalTwoFA
+}
-- 
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