35 lines
1.0 KiB
CoffeeScript
35 lines
1.0 KiB
CoffeeScript
import config from "../config.json"
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import * as crypto from "./crypto"
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addEventListener 'fetch', (event) =>
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event.respondWith handleRequest event
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handleRequest = ({ request }) ->
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if request.method is "PUT"
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return handlePUT request
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return new Response "Not Found",
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status: 404
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handlePUT = (request) ->
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url = new URL request.url
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if url.searchParams.has "v2"
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valid = await verifySignatureV2 url.searchParams.get("v2"), url, request
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return verifyFailure() unless valid
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return new Response "Valid"
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verifyFailure = ->
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return new Response "Invalid signature",
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status: 403
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verifySignatureV2 = (sig, url, request) ->
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content_length = request.headers.get "Content-Length"
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content_type = request.headers.get "Content-Type"
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if not (content_length? and content_type?)
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return false
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sign_str = url.pathname[1..] + "\0" + content_length + "\0" + content_type
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local_sig = await crypto.HMAC_SHA256 crypto.utf8Bytes(config.xmpp_secret), sign_str
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local_sig = crypto.hex local_sig
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return local_sig is sig |