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fix(frontend): handlePaste deduplication and MIME extension sanitization #211

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fix(frontend): handlePaste deduplication and MIME extension sanitization #211

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609a8e3
fix(frontend): handlePaste deduplication and MIME extension sanitization
smeinecke Jun 16, 2026
5f8baf1
Merge branch 'main' into fix-208-fwa-wup
cupcakearmy Jun 25, 2026
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23 changes: 18 additions & 5 deletions packages/frontend/src/lib/views/Create.svelte
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Original file line number Diff line number Diff line change
Expand Up @@ -32,6 +32,23 @@
let loading: string | null = $state(null)
let isPasting = $state(false)

function mimeToExt(mime: string): string {
const map: Record<string, string> = {
'image/svg+xml': 'svg',
'application/pdf': 'pdf',
'application/zip': 'zip',
'text/plain': 'txt',
'text/html': 'html',
'text/csv': 'csv',
'image/webp': 'webp',
'image/avif': 'avif',
}
if (map[mime]) return map[mime]
const subtype = mime.split('/')[1]
if (!subtype) return 'bin'
return subtype.split('+')[0]
}

$effect(() => {
if (!advanced) {
note.views = 1
Expand Down Expand Up @@ -65,10 +82,6 @@

const raw: File[] = []

if (data.files.length) {
raw.push(...Array.from(data.files))
}

for (let i = 0; i < data.items.length; i++) {
const item = data.items[i]
if (item.kind === 'file') {
Expand All @@ -94,7 +107,7 @@

const dtos: FileDTO[] = await Promise.all(
pasted.map(async (file) => {
const ext = file.name.includes('.') ? '' : `.${file.type.split('/')[1] || 'bin'}`
const ext = file.name.includes('.') ? '' : `.${mimeToExt(file.type)}`
const name =
file.name || `pasted-file-${Date.now()}-${Math.round(Math.random() * 1000)}${ext}`
const renamed = new File([file], name, { type: file.type })
Expand Down
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