feat: license violation protection (#13285)

* spec(frontend): aboutページにリポジトリ・フィードバックのURLを表示させる

Cherry-picked from MisskeyIO#441
Cherry-picked from MisskeyIO#438

* feat: license violation protection

* build: fix typo

* build: fix typo

* fix: farewell to the static type land

* fix: key typo

* fix: import typo

* fix: properly interpret `prominently`

* docs: add disclaimer

* docs: update CHANGELOG

* chore: add gap

---------

Co-authored-by: まっちゃとーにゅ <17376330+u1-liquid@users.noreply.github.com>
Co-authored-by: syuilo <4439005+syuilo@users.noreply.github.com>

7 files changed, 206 insertions, 10 deletions

diff --git a/packages/frontend/src/boot/main-boot.ts b/packages/frontend/src/boot/main-boot.ts
index afe8e2ac1b..b19d45a35e 100644
--- a/packages/frontend/src/boot/main-boot.ts
+++ b/packages/frontend/src/boot/main-boot.ts
@@ -11,6 +11,7 @@ import { alert, confirm, popup, post, toast } from '@/os.js';
 import { useStream } from '@/stream.js';
 import * as sound from '@/scripts/sound.js';
 import { $i, signout, updateAccount } from '@/account.js';
+import { fetchInstance, instance } from '@/instance.js';
 import { ColdDeviceStorage, defaultStore } from '@/store.js';
 import { makeHotkey } from '@/scripts/hotkey.js';
 import { reactionPicker } from '@/scripts/reaction-picker.js';
@@ -234,6 +235,13 @@ export async function mainBoot() {
 			}
 		}
 
+		fetchInstance().then(() => {
+			const modifiedVersionMustProminentlyOfferInAgplV3Section13Read = miLocalStorage.getItem('modifiedVersionMustProminentlyOfferInAgplV3Section13Read');
+			if (modifiedVersionMustProminentlyOfferInAgplV3Section13Read !== 'true' && instance.repositoryUrl !== 'https://github.com/misskey-dev/misskey') {
+				popup(defineAsyncComponent(() => import('@/components/MkSourceCodeAvailablePopup.vue')), {}, {}, 'closed');
+			}
+		});
+
 		if ('Notification' in window) {
 			// 許可を得ていなかったらリクエスト
 			if (Notification.permission === 'default') {
diff --git a/packages/frontend/src/components/MkSourceCodeAvailablePopup.vue b/packages/frontend/src/components/MkSourceCodeAvailablePopup.vue
new file mode 100644
index 0000000000..80f3a6709c
--- /dev/null
+++ b/packages/frontend/src/components/MkSourceCodeAvailablePopup.vue
@@ -0,0 +1,112 @@
+<!--
+SPDX-FileCopyrightText: syuilo and misskey-project
+SPDX-License-Identifier: AGPL-3.0-only
+-->
+
+<template>
+<div class="_panel _shadow" :class="$style.root">
+	<div :class="$style.icon">
+		<svg xmlns="http://www.w3.org/2000/svg" class="icon icon-tabler icon-tabler-brand-open-source" width="40" height="40" viewBox="0 0 24 24" stroke-width="1" stroke="currentColor" fill="none" stroke-linecap="round" stroke-linejoin="round">
+			<path stroke="none" d="M0 0h24v24H0z" fill="none"/>
+			<path d="M12 3a9 9 0 0 1 3.618 17.243l-2.193 -5.602a3 3 0 1 0 -2.849 0l-2.193 5.603a9 9 0 0 1 3.617 -17.244z"/>
+		</svg>
+	</div>
+	<div :class="$style.main">
+		<div :class="$style.title">
+			<I18n :src="i18n.ts.aboutX" tag="span">
+				<template #x>
+					{{ instance.name ?? host }}
+				</template>
+			</I18n>
+		</div>
+		<div :class="$style.text">
+			<I18n :src="i18n.ts._aboutMisskey.thisIsModifiedVersion" tag="span">
+				<template #name>
+					{{ instance.name ?? host }}
+				</template>
+			</I18n>
+			<I18n :src="i18n.ts.correspondingSourceIsAvailable" tag="span">
+				<template #anchor>
+					<MkA to="/about-misskey" class="_link">{{ i18n.ts.aboutMisskey }}</MkA>
+				</template>
+			</I18n>
+		</div>
+		<div class="_buttons">
+			<MkButton @click="close">{{ i18n.ts.gotIt }}</MkButton>
+		</div>
+	</div>
+	<button class="_button" :class="$style.close" @click="close"><i class="ti ti-x"></i></button>
+</div>
+</template>
+
+<script lang="ts" setup>
+import MkButton from '@/components/MkButton.vue';
+import { host } from '@/config.js';
+import { i18n } from '@/i18n.js';
+import { instance } from '@/instance.js';
+import { miLocalStorage } from '@/local-storage.js';
+import * as os from '@/os.js';
+
+const emit = defineEmits<{
+	(ev: 'closed'): void;
+}>();
+
+const zIndex = os.claimZIndex('low');
+
+function close() {
+	miLocalStorage.setItem('modifiedVersionMustProminentlyOfferInAgplV3Section13Read', 'true');
+	emit('closed');
+}
+</script>
+
+<style lang="scss" module>
+.root {
+	position: fixed;
+	z-index: v-bind(zIndex);
+	bottom: var(--margin);
+	left: 0;
+	right: 0;
+	margin: auto;
+	box-sizing: border-box;
+	width: calc(100% - (var(--margin) * 2));
+	max-width: 500px;
+	display: flex;
+}
+
+.icon {
+	text-align: center;
+	padding-top: 25px;
+	width: 100px;
+	color: var(--accent);
+}
+@media (max-width: 500px) {
+	.icon {
+		width: 80px;
+	}
+}
+@media (max-width: 450px) {
+	.icon {
+		width: 70px;
+	}
+}
+
+.main {
+	padding: 25px 25px 25px 0;
+	flex: 1;
+}
+
+.close {
+	position: absolute;
+	top: 8px;
+	right: 8px;
+	padding: 8px;
+}
+
+.title {
+	font-weight: bold;
+}
+
+.text {
+	margin: 0.7em 0 1em 0;
+}
+</style>
diff --git a/packages/frontend/src/local-storage.ts b/packages/frontend/src/local-storage.ts
index 355715bcc6..3de81c9bb9 100644
--- a/packages/frontend/src/local-storage.ts
+++ b/packages/frontend/src/local-storage.ts
@@ -12,6 +12,7 @@ type Keys =
 	'latestDonationInfoShownAt' |
 	'neverShowDonationInfo' |
 	'neverShowLocalOnlyInfo' |
+	'modifiedVersionMustProminentlyOfferInAgplV3Section13Read' |
 	'lastUsed' |
 	'lang' |
 	'drafts' |
diff --git a/packages/frontend/src/pages/about-misskey.vue b/packages/frontend/src/pages/about-misskey.vue
index a2ecae3b80..fd97ab97b9 100644
--- a/packages/frontend/src/pages/about-misskey.vue
+++ b/packages/frontend/src/pages/about-misskey.vue
@@ -31,7 +31,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 					<div class="_gaps_s">
 						<FormLink to="https://github.com/misskey-dev/misskey" external>
 							<template #icon><i class="ti ti-code"></i></template>
-							{{ i18n.ts._aboutMisskey.source }}
+							{{ i18n.ts._aboutMisskey.source }} ({{ i18n.ts._aboutMisskey.original }})
 							<template #suffix>GitHub</template>
 						</FormLink>
 						<FormLink to="https://crowdin.com/project/misskey" external>
@@ -46,6 +46,25 @@ SPDX-License-Identifier: AGPL-3.0-only
 						</FormLink>
 					</div>
 				</FormSection>
+				<FormSection v-if="instance.repositoryUrl !== 'https://github.com/misskey-dev/misskey'">
+					<div class="_gaps_s">
+						<MkInfo>
+							{{ i18n.tsx._aboutMisskey.thisIsModifiedVersion({ name: instance.name }) }}
+						</MkInfo>
+						<FormLink v-if="instance.repositoryUrl" :to="instance.repositoryUrl" external>
+							<template #icon><i class="ti ti-code"></i></template>
+							{{ i18n.ts._aboutMisskey.source }}
+						</FormLink>
+						<FormLink v-if="instance.providesTarball" :to="`/tarball/misskey-${version}.tar.gz`" external>
+							<template #icon><i class="ti ti-download"></i></template>
+							{{ i18n.ts._aboutMisskey.source }}
+							<template #suffix>Tarball</template>
+						</FormLink>
+						<MkInfo v-if="!instance.repositoryUrl && !instance.providesTarball" warn>
+							{{ i18n.ts.sourceCodeIsNotYetProvided }}
+						</MkInfo>
+					</div>
+				</FormSection>
 				<FormSection>
 					<template #label>{{ i18n.ts._aboutMisskey.projectMembers }}</template>
 					<div :class="$style.contributors">
@@ -118,9 +137,10 @@ import { version } from '@/config.js';
 import FormLink from '@/components/form/link.vue';
 import FormSection from '@/components/form/section.vue';
 import MkButton from '@/components/MkButton.vue';
-import MkLink from '@/components/MkLink.vue';
+import MkInfo from '@/components/MkInfo.vue';
 import { physics } from '@/scripts/physics.js';
 import { i18n } from '@/i18n.js';
+import { instance } from '@/instance.js';
 import { defaultStore } from '@/store.js';
 import * as os from '@/os.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
diff --git a/packages/frontend/src/pages/about.vue b/packages/frontend/src/pages/about.vue
index f99eb9c577..324d1c11de 100644
--- a/packages/frontend/src/pages/about.vue
+++ b/packages/frontend/src/pages/about.vue
@@ -31,7 +31,17 @@ SPDX-License-Identifier: AGPL-3.0-only
 						</MkKeyValue>
 						<div v-html="i18n.tsx.poweredByMisskeyDescription({ name: instance.name ?? host })">
 						</div>
-						<FormLink to="/about-misskey">{{ i18n.ts.aboutMisskey }}</FormLink>
+						<FormLink to="/about-misskey">
+							<template #icon><i class="ti ti-info-circle"></i></template>
+							{{ i18n.ts.aboutMisskey }}
+						</FormLink>
+						<FormLink v-if="instance.repositoryUrl || instance.providesTarball" :to="instance.repositoryUrl || `/tarball/misskey-${version}.tar.gz`" external>
+							<template #icon><i class="ti ti-code"></i></template>
+							{{ i18n.ts.sourceCode }}
+						</FormLink>
+						<MkInfo v-else warn>
+							{{ i18n.ts.sourceCodeIsNotYetProvided }}
+						</MkInfo>
 					</div>
 				</FormSection>
 
@@ -47,17 +57,33 @@ SPDX-License-Identifier: AGPL-3.0-only
 								<template #value>{{ instance.maintainerEmail }}</template>
 							</MkKeyValue>
 						</FormSplit>
-						<FormLink v-if="instance.impressumUrl" :to="instance.impressumUrl" external>{{ i18n.ts.impressum }}</FormLink>
+						<FormLink v-if="instance.impressumUrl" :to="instance.impressumUrl" external>
+							<template #icon><i class="ti ti-user-shield"></i></template>
+							{{ i18n.ts.impressum }}
+						</FormLink>
 						<div class="_gaps_s">
 							<MkFolder v-if="instance.serverRules.length > 0">
-								<template #label>{{ i18n.ts.serverRules }}</template>
+								<template #label>
+									<i class="ti ti-checkup-list"></i>
+									{{ i18n.ts.serverRules }}
+								</template>
 
 								<ol class="_gaps_s" :class="$style.rules">
-									<li v-for="item, index in instance.serverRules" :key="index" :class="$style.rule"><div :class="$style.ruleText" v-html="item"></div></li>
+									<li v-for="(item, index) in instance.serverRules" :key="index" :class="$style.rule"><div :class="$style.ruleText" v-html="item"></div></li>
 								</ol>
 							</MkFolder>
-							<FormLink v-if="instance.tosUrl" :to="instance.tosUrl" external>{{ i18n.ts.termsOfService }}</FormLink>
-							<FormLink v-if="instance.privacyPolicyUrl" :to="instance.privacyPolicyUrl" external>{{ i18n.ts.privacyPolicy }}</FormLink>
+							<FormLink v-if="instance.tosUrl" :to="instance.tosUrl" external>
+								<template #icon><i class="ti ti-license"></i></template>
+								{{ i18n.ts.termsOfService }}
+							</FormLink>
+							<FormLink v-if="instance.privacyPolicyUrl" :to="instance.privacyPolicyUrl" external>
+								<template #icon><i class="ti ti-shield-lock"></i></template>
+								{{ i18n.ts.privacyPolicy }}
+							</FormLink>
+							<FormLink v-if="instance.feedbackUrl" :to="instance.feedbackUrl" external>
+								<template #icon><i class="ti ti-message"></i></template>
+								{{ i18n.ts.feedback }}
+							</FormLink>
 						</div>
 					</div>
 				</FormSection>
@@ -86,7 +112,6 @@ SPDX-License-Identifier: AGPL-3.0-only
 						<FormLink :to="`/.well-known/nodeinfo`" external>nodeinfo</FormLink>
 						<FormLink :to="`/robots.txt`" external>robots.txt</FormLink>
 						<FormLink :to="`/manifest.json`" external>manifest.json</FormLink>
-						<FormLink :to="`/tarball/misskey-${version}.tar.gz`" external>source code</FormLink>
 					</div>
 				</FormSection>
 			</div>
@@ -116,6 +141,7 @@ import FormSuspense from '@/components/form/suspense.vue';
 import FormSplit from '@/components/form/split.vue';
 import MkFolder from '@/components/MkFolder.vue';
 import MkKeyValue from '@/components/MkKeyValue.vue';
+import MkInfo from '@/components/MkInfo.vue';
 import MkInstanceStats from '@/components/MkInstanceStats.vue';
 import MkHorizontalSwipe from '@/components/MkHorizontalSwipe.vue';
 import { misskeyApi } from '@/scripts/misskey-api.js';
diff --git a/packages/frontend/src/pages/admin/branding.vue b/packages/frontend/src/pages/admin/branding.vue
index 4ac2011aaf..2b559f92c9 100644
--- a/packages/frontend/src/pages/admin/branding.vue
+++ b/packages/frontend/src/pages/admin/branding.vue
@@ -76,6 +76,16 @@ SPDX-License-Identifier: AGPL-3.0-only
 						<template #caption>{{ i18n.ts.instanceDefaultThemeDescription }}</template>
 					</MkTextarea>
 
+					<MkInput v-model="repositoryUrl" type="url">
+						<template #prefix><i class="ti ti-link"></i></template>
+						<template #label>{{ i18n.ts.repositoryUrl }}</template>
+					</MkInput>
+
+					<MkInput v-model="feedbackUrl" type="url">
+						<template #prefix><i class="ti ti-link"></i></template>
+						<template #label>{{ i18n.ts.feedbackUrl }}</template>
+					</MkInput>
+
 					<MkTextarea v-model="manifestJsonOverride">
 						<template #label>{{ i18n.ts._serverSettings.manifestJsonOverride }}</template>
 					</MkTextarea>
@@ -120,6 +130,8 @@ const defaultDarkTheme = ref<string | null>(null);
 const serverErrorImageUrl = ref<string | null>(null);
 const infoImageUrl = ref<string | null>(null);
 const notFoundImageUrl = ref<string | null>(null);
+const repositoryUrl = ref<string | null>(null);
+const feedbackUrl = ref<string | null>(null);
 const manifestJsonOverride = ref<string>('{}');
 
 async function init() {
@@ -135,6 +147,8 @@ async function init() {
 	serverErrorImageUrl.value = meta.serverErrorImageUrl;
 	infoImageUrl.value = meta.infoImageUrl;
 	notFoundImageUrl.value = meta.notFoundImageUrl;
+	repositoryUrl.value = meta.repositoryUrl;
+	feedbackUrl.value = meta.feedbackUrl;
 	manifestJsonOverride.value = meta.manifestJsonOverride === '' ? '{}' : JSON.stringify(JSON.parse(meta.manifestJsonOverride), null, '\t');
 }
 
@@ -151,6 +165,8 @@ function save() {
 		infoImageUrl: infoImageUrl.value === '' ? null : infoImageUrl.value,
 		notFoundImageUrl: notFoundImageUrl.value === '' ? null : notFoundImageUrl.value,
 		serverErrorImageUrl: serverErrorImageUrl.value === '' ? null : serverErrorImageUrl.value,
+		repositoryUrl: repositoryUrl.value === '' ? null : repositoryUrl.value,
+		feedbackUrl: feedbackUrl.value === '' ? null : feedbackUrl.value,
 		manifestJsonOverride: manifestJsonOverride.value === '' ? '{}' : JSON.stringify(JSON5.parse(manifestJsonOverride.value)),
 	}).then(() => {
 		fetchInstance();
diff --git a/packages/frontend/src/pages/admin/settings.vue b/packages/frontend/src/pages/admin/settings.vue
index 8af9deae62..c505d70aa9 100644
--- a/packages/frontend/src/pages/admin/settings.vue
+++ b/packages/frontend/src/pages/admin/settings.vue
@@ -34,6 +34,16 @@ SPDX-License-Identifier: AGPL-3.0-only
 						</MkInput>
 					</FormSplit>
 
+					<MkInput v-model="repositoryUrl" type="url">
+						<template #label>{{ i18n.ts.repositoryUrl }}</template>
+						<template #prefix><i class="ti ti-link"></i></template>
+						<template #caption>{{ i18n.ts.repositoryUrlDescription }}</template>
+					</MkInput>
+
+					<MkInfo v-if="!instance.providesTarball && !repositoryUrl" warn>
+						{{ i18n.ts.repositoryUrlOrTarballRequired }}
+					</MkInfo>
+
 					<MkInput v-model="impressumUrl" type="url">
 						<template #label>{{ i18n.ts.impressumUrl }}</template>
 						<template #prefix><i class="ti ti-link"></i></template>
@@ -159,7 +169,7 @@ import FormSplit from '@/components/form/split.vue';
 import FormSuspense from '@/components/form/suspense.vue';
 import * as os from '@/os.js';
 import { misskeyApi } from '@/scripts/misskey-api.js';
-import { fetchInstance } from '@/instance.js';
+import { fetchInstance, instance } from '@/instance.js';
 import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import MkButton from '@/components/MkButton.vue';
@@ -169,6 +179,7 @@ const shortName = ref<string | null>(null);
 const description = ref<string | null>(null);
 const maintainerName = ref<string | null>(null);
 const maintainerEmail = ref<string | null>(null);
+const repositoryUrl = ref<string | null>(null);
 const impressumUrl = ref<string | null>(null);
 const pinnedUsers = ref<string>('');
 const cacheRemoteFiles = ref<boolean>(false);
@@ -191,6 +202,7 @@ async function init(): Promise<void> {
 	description.value = meta.description;
 	maintainerName.value = meta.maintainerName;
 	maintainerEmail.value = meta.maintainerEmail;
+	repositoryUrl.value = meta.repositoryUrl;
 	impressumUrl.value = meta.impressumUrl;
 	pinnedUsers.value = meta.pinnedUsers.join('\n');
 	cacheRemoteFiles.value = meta.cacheRemoteFiles;
@@ -214,6 +226,7 @@ async function save(): void {
 		description: description.value,
 		maintainerName: maintainerName.value,
 		maintainerEmail: maintainerEmail.value,
+		repositoryUrl: repositoryUrl.value,
 		impressumUrl: impressumUrl.value,
 		pinnedUsers: pinnedUsers.value.split('\n'),
 		cacheRemoteFiles: cacheRemoteFiles.value,