From a921cfdb7a3ca3966e41f2f90bcc454b4cc59dc4 Mon Sep 17 00:00:00 2001
From: ThatGravyBoat <gravy@thatgravyboat.tech>
Date: Tue, 25 Aug 2026 20:11:39 -0230
Subject: [PATCH] feat: scan file for c2pa content (#7297)

* feat: scan file for c2pa content

* prepr

---------

Co-authored-by: Prospector <6166773+Prospector@users.noreply.github.com>
---
 .../ui/moderation/ProjectC2paScanModal.vue    | 113 ++++++++++++++++++
 .../src/pages/[type]/[project]/versions.vue   |  17 +++
 .../ui/src/components/user/account-choice.ts  |   8 ++
 3 files changed, 138 insertions(+)
 create mode 100644 apps/frontend/src/components/ui/moderation/ProjectC2paScanModal.vue
 create mode 100644 packages/ui/src/components/user/account-choice.ts

diff --git a/apps/frontend/src/components/ui/moderation/ProjectC2paScanModal.vue b/apps/frontend/src/components/ui/moderation/ProjectC2paScanModal.vue
new file mode 100644
index 0000000000..100968c3f1
--- /dev/null
+++ b/apps/frontend/src/components/ui/moderation/ProjectC2paScanModal.vue
@@ -0,0 +1,113 @@
+<script setup lang="ts">
+import { ExternalIcon } from '@modrinth/assets'
+import { ButtonLink, NewModal } from '@modrinth/ui'
+import { ref, useTemplateRef } from 'vue'
+
+import { fileDeclaresAi } from '~/helpers/c2pa.ts'
+
+const modalRef = useTemplateRef<InstanceType<typeof NewModal>>('modalRef')
+const isScanning = ref(false)
+
+const fileUrl = ref<string | null>(null)
+const totalFiles = ref(0)
+const checkedFiles = ref(0)
+const aiFiles = ref<string[]>([])
+
+async function scanFile(url: string) {
+	if (isScanning.value) return
+
+	fileUrl.value = url
+	isScanning.value = true
+	totalFiles.value = 0
+	checkedFiles.value = 0
+	aiFiles.value = []
+
+	try {
+		const { BlobReader, ZipReader } = await import('@zip.js/zip.js')
+
+		const response = await fetch(url)
+		if (!response.ok) {
+			throw new Error(`Failed to fetch file: ${response.statusText}`)
+		}
+		const blob = await response.blob()
+
+		const reader = new ZipReader(new BlobReader(blob))
+		const entries = await reader.getEntries()
+
+		totalFiles.value = entries.length
+
+		for (const entry of entries) {
+			checkedFiles.value++
+
+			if (entry.directory) continue
+			if (!entry.filename.endsWith('.png')) continue
+
+			const buffer = await entry.arrayBuffer()
+			const isAiFile = await fileDeclaresAi(
+				new File([buffer], entry.filename, { type: 'image/png' }),
+			)
+
+			if (isAiFile) {
+				aiFiles.value.push(entry.filename)
+			}
+		}
+	} finally {
+		isScanning.value = false
+	}
+}
+
+function createSlicerUrl(path: string) {
+	const downloadUrl = new URL(fileUrl.value!)
+	const fileName = downloadUrl.pathname.split('/').pop()
+
+	return `https://slicer.run/?file=${encodeURIComponent(`${fileName}/${path}`)}&url=${encodeURIComponent(downloadUrl.toString())}`
+}
+
+function openC2paModal(url: string) {
+	modalRef.value?.show()
+	void scanFile(url)
+}
+
+function hide() {
+	modalRef.value?.hide()
+}
+
+defineExpose({ openC2paModal, hide })
+</script>
+
+<template>
+	<NewModal ref="modalRef" width="40vw" :disable-close="isScanning">
+		<template #title>
+			<span class="text-2xl font-semibold text-contrast">C2PA Scan Info</span>
+		</template>
+
+		<div class="w-full">
+			<div v-if="isScanning" class="flex items-center justify-center">
+				<span class="rounded-xl bg-highlight-blue px-4 py-1"
+					>Scanning {{ checkedFiles }}/{{ totalFiles }} files.</span
+				>
+			</div>
+			<div v-else>
+				<div v-if="aiFiles.length === 0" class="flex items-center justify-center">
+					<span class="rounded-xl bg-highlight-green px-4 py-1">No AI-generated files found.</span>
+				</div>
+
+				<div v-if="aiFiles.length > 0" class="flex flex-col gap-1">
+					<span class="ml-2 text-xl font-semibold text-contrast"
+						>AI-generated files ({{ aiFiles.length }})</span
+					>
+					<div
+						v-for="file in aiFiles"
+						:key="file"
+						class="flex flex-row flex-wrap items-center justify-between gap-2 rounded-2xl bg-surface-2 p-4 font-semibold text-secondary"
+					>
+						{{ file }}
+						<ButtonLink :href="createSlicerUrl(file)" target="_blank">
+							Open <ExternalIcon />
+						</ButtonLink>
+					</div>
+				</div>
+			</div>
+		</div>
+	</NewModal>
+</template>
diff --git a/apps/frontend/src/pages/[type]/[project]/versions.vue b/apps/frontend/src/pages/[type]/[project]/versions.vue
index adefb0711f..f7447f1a24 100644
--- a/apps/frontend/src/pages/[type]/[project]/versions.vue
+++ b/apps/frontend/src/pages/[type]/[project]/versions.vue
@@ -12,6 +12,8 @@
 				ref="create-project-version-modal"
 			></CreateProjectVersionModal>
 
+			<ProjectC2paScanModal ref="project-c2pa-scan-modal"></ProjectC2paScanModal>
+
 			<ConfirmModal
 				v-if="currentMember"
 				ref="deleteVersionModal"
@@ -156,6 +158,14 @@
 									auth.user ? reportVersion(version.id) : navigateTo(getSignInRouteObj(route)),
 								shown: !currentMember,
 							},
+							{ type: 'divider', shown: isStaff(auth.user) },
+							{
+								id: 'view-c2pa-info',
+								label: 'View C2PA info',
+								tone: 'orange',
+								action: () => projectC2paScanModal.openC2paModal(createDownloadUrl(version)),
+								shown: isStaff(auth.user),
+							},
 							{ type: 'divider', shown: currentMember || flags.developerMode },
 							{
 								id: 'copy-id',
@@ -243,6 +253,10 @@
 							<TrashIcon aria-hidden="true" />
 							Delete
 						</template>
+						<template #view-c2pa-info>
+							<ScanEyeIcon aria-hidden="true" />
+							View C2PA Info
+						</template>
 						<template #copy-id>
 							<ClipboardCopyIcon aria-hidden="true" />
 							Copy ID
@@ -279,6 +293,7 @@ import {
 	LinkIcon,
 	MoreVerticalIcon,
 	ReportIcon,
+	ScanEyeIcon,
 	ShareIcon,
 	SpinnerIcon,
 	TrashIcon,
@@ -297,6 +312,7 @@ import { isStaff } from '@modrinth/utils'
 import { onMounted, useTemplateRef, watch } from 'vue'
 
 import CreateProjectVersionModal from '~/components/ui/create-project-version/CreateProjectVersionModal.vue'
+import ProjectC2paScanModal from '~/components/ui/moderation/ProjectC2paScanModal.vue'
 import { getSignInRouteObj } from '~/composables/auth.ts'
 import { reportVersion } from '~/utils/report-helpers.ts'
 
@@ -337,6 +353,7 @@ onMounted(() => {
 const deleteVersionModal = ref()
 const selectedVersion = ref(null)
 const createProjectVersionModal = useTemplateRef('create-project-version-modal')
+const projectC2paScanModal = useTemplateRef('project-c2pa-scan-modal')
 
 const handleOpenCreateVersionModal = () => {
 	if (!currentMember.value) return
diff --git a/packages/ui/src/components/user/account-choice.ts b/packages/ui/src/components/user/account-choice.ts
new file mode 100644
index 0000000000..59072682f3
--- /dev/null
+++ b/packages/ui/src/components/user/account-choice.ts
@@ -0,0 +1,8 @@
+import type { Labrinth } from '@modrinth/api-client'
+
+export type AccountChoice = {
+	id: string
+	username: string
+	avatarUrl?: string | null
+	role?: Labrinth.Users.v2.Role | null
+}