From c946b9e3a4402895397bd56a720bb6aa834d6021 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Lo=C3=AFc=20Dachary?= <loic@dachary.org>
Date: Fri, 24 Dec 2021 16:47:43 +0100
Subject: [PATCH] activitypub: hack_16834
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Signed-off-by: Loïc Dachary <loic@dachary.org>
---
 modules/activitypub/hack_16834.go      | 44 ++++++++++++++++++++++++++
 modules/activitypub/hack_16834_test.go | 27 ++++++++++++++++
 2 files changed, 71 insertions(+)
 create mode 100644 modules/activitypub/hack_16834.go
 create mode 100644 modules/activitypub/hack_16834_test.go

diff --git a/modules/activitypub/hack_16834.go b/modules/activitypub/hack_16834.go
new file mode 100644
index 000000000..b3537c6d3
--- /dev/null
+++ b/modules/activitypub/hack_16834.go
@@ -0,0 +1,44 @@
+// Copyright 2021 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package activitypub
+
+import (
+	user_model "code.gitea.io/gitea/models/user"
+)
+
+// GetKeyPair function
+func GetKeyPair(user *user_model.User) (pub, priv string, err error) {
+	var settings map[string]*user_model.Setting
+	if settings, err = user_model.GetUserSettings(user.ID, []string{"activitypub_privpem", "activitypub_pubpem"}); err != nil {
+		return
+	} else if len(settings) == 0 {
+		if priv, pub, err = GenerateKeyPair(); err != nil {
+			return
+		}
+		if err = user_model.SetUserSetting(user.ID, "activitypub_privpem", priv); err != nil {
+			return
+		}
+		if err = user_model.SetUserSetting(user.ID, "activitypub_pubpem", pub); err != nil {
+			return
+		}
+		return
+	} else {
+		priv = settings["activitypub_privpem"].SettingValue
+		pub = settings["activitypub_pubpem"].SettingValue
+		return
+	}
+}
+
+// GetPublicKey function
+func GetPublicKey(user *user_model.User) (pub string, err error) {
+	pub, _, err = GetKeyPair(user)
+	return
+}
+
+// GetPrivateKey function
+func GetPrivateKey(user *user_model.User) (priv string, err error) {
+	_, priv, err = GetKeyPair(user)
+	return
+}
diff --git a/modules/activitypub/hack_16834_test.go b/modules/activitypub/hack_16834_test.go
new file mode 100644
index 000000000..8982afb7b
--- /dev/null
+++ b/modules/activitypub/hack_16834_test.go
@@ -0,0 +1,27 @@
+// Copyright 2021 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package activitypub
+
+import (
+	"testing"
+
+	_ "code.gitea.io/gitea/models" // https://discourse.gitea.io/t/testfixtures-could-not-clean-table-access-no-such-table-access/4137/4
+	"code.gitea.io/gitea/models/unittest"
+	user_model "code.gitea.io/gitea/models/user"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestHack16834(t *testing.T) {
+	assert.NoError(t, unittest.PrepareTestDatabase())
+	user1 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 1}).(*user_model.User)
+	pub, priv, err := GetKeyPair(user1)
+	assert.NoError(t, err)
+	pub1, err := GetPublicKey(user1)
+	assert.NoError(t, err)
+	assert.Equal(t, pub, pub1)
+	priv1, err := GetPrivateKey(user1)
+	assert.NoError(t, err)
+	assert.Equal(t, priv, priv1)
+}