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Store Discord media proxy hashes in the database

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Cadence Ember 2024-09-22 15:53:58 +12:00
commit 06f502dd89
2 changed files with 19 additions and 1 deletions
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10
src/web/routes/download-discord.js
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@ -4,6 +4,11 @@ const assert = require("assert/strict")
const {defineEventHandler, getValidatedRouterParams, sendRedirect, createError} = require("h3")
const {z} = require("zod")
/** @type {import("xxhash-wasm").XXHashAPI} */ // @ts-ignore
let hasher = null
// @ts-ignore
require("xxhash-wasm")().then(h => hasher = h)
const {discord, as, select} = require("../../passthrough")
const schema = {
@ -31,7 +36,10 @@ function defineMediaProxyHandler(domain) {
return defineEventHandler(async event => {
const params = await getValidatedRouterParams(event, schema.params.parse)
const row = select("channel_room", "channel_id", {channel_id: params.channel_id}).get()
const unsignedHash = hasher.h64(params.attachment_id)
const signedHash = unsignedHash - 0x8000000000000000n // shifting down to signed 64-bit range
const row = select("media_proxy", "permitted_hash", {permitted_hash: signedHash}).get()
if (row == null) {
throw createError({
status: 403,