[api] fix(security): bound API-owned uploads (#56)

Co-authored-by: Nexi (CWN) <communityshieldofficial@gmail.com>
This commit is contained in:
Nexi
2026-09-09 22:24:02 +01:00
committed by GitHub
parent 87a1cd6b55
commit 438475e326
8 changed files with 138 additions and 1 deletions
+67
View File
@@ -4014,6 +4014,53 @@ describe('custom avatar items', () => {
expect(await res.json()).toMatchObject({ Success: false, Value: null })
})
test('POST rejects either oversized file before writing anything to R2', async () => {
const previous = env.RECFLARE_MAX_API_UPLOAD_BYTES
env.RECFLARE_MAX_API_UPLOAD_BYTES = '3'
try {
const objectsBefore = (await env.IMAGES.list({ prefix: 'avatar-item/' })).objects.length
const upload = async (thumbnail: Uint8Array, design: Uint8Array) => {
const form = new FormData()
form.set(
'metadata',
JSON.stringify({ Name: 'bounded', BaseAvatarItemId: 1, BaseAvatarItemColor: '#fff' })
)
form.set('thumbnailImage', new File([thumbnail], 'thumb.png', { type: 'image/png' }))
form.set('design', new File([design], 'design.png', { type: 'image/png' }))
return exports.default.fetch(`${ORIGIN}/api/customAvatarItems/v1`, {
method: 'POST',
headers: await bearer('205'),
body: form,
})
}
const oversizedThumbnail = await upload(new Uint8Array(4), new Uint8Array(3))
expect(oversizedThumbnail.status).toBe(413)
expect(await oversizedThumbnail.json()).toMatchObject({
Success: false,
Error: 'thumbnailImage exceeds the 3-byte upload limit',
})
const oversizedDesign = await upload(new Uint8Array(3), new Uint8Array(4))
expect(oversizedDesign.status).toBe(413)
expect(await oversizedDesign.json()).toMatchObject({
Success: false,
Error: 'design exceeds the 3-byte upload limit',
})
// Neither rejected request may create metadata or leave one of its two objects behind.
const row = await env.DB.prepare(
"SELECT COUNT(*) AS n FROM custom_avatar_item WHERE name = 'bounded'"
).first<{ n: number }>()
expect(row?.n).toBe(0)
expect((await env.IMAGES.list({ prefix: 'avatar-item/' })).objects).toHaveLength(
objectsBefore
)
} finally {
env.RECFLARE_MAX_API_UPLOAD_BYTES = previous
}
})
test('POST 401s without a token', async () => {
const res = await exports.default.fetch(`${ORIGIN}/api/customAvatarItems/v1`, {
method: 'POST',
@@ -5303,6 +5350,26 @@ describe('images', () => {
expect(res.status).toBe(400)
})
test('POST /api/images/v4/uploadsaved rejects an oversized image before storing it', async () => {
const previous = env.RECFLARE_MAX_API_UPLOAD_BYTES
env.RECFLARE_MAX_API_UPLOAD_BYTES = '3'
try {
const objectsBefore = (await env.IMAGES.list()).objects.length
const fd = new FormData()
fd.append('image', new File([new Uint8Array(4)], 'large.png', { type: 'image/png' }))
const res = await exports.default.fetch(`${ORIGIN}/api/images/v4/uploadsaved`, {
method: 'POST',
headers: await bearer('42'),
body: fd,
})
expect(res.status).toBe(413)
expect(await res.json()).toEqual({ error: 'image exceeds the 3-byte upload limit' })
expect((await env.IMAGES.list()).objects).toHaveLength(objectsBefore)
} finally {
env.RECFLARE_MAX_API_UPLOAD_BYTES = previous
}
})
test('GET /api/images/v4/room/:id returns a public room feed, filtered/sorted/paginated', async () => {
// Seed images in room 54: two public (one with more cheers, of different
// types), one private (hidden), and one in another room (excluded).