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https://gitdab.com/cadence/out-of-your-element.git
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88 lines
2.7 KiB
JavaScript
88 lines
2.7 KiB
JavaScript
// @ts-check
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const mixin = require("@cloudrac3r/mixin-deep")
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const stream = require("stream")
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const streamWeb = require("stream/web")
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const getStream = require("get-stream")
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const {reg, writeRegistration} = require("./read-registration.js")
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const baseUrl = `${reg.ooye.server_origin}/_matrix`
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class MatrixServerError extends Error {
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constructor(data, opts) {
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super(data.error || data.errcode)
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this.data = data
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/** @type {string} */
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this.errcode = data.errcode
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this.opts = opts
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}
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}
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/**
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* @param {string} method
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* @param {string} url
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* @param {string | object | streamWeb.ReadableStream | stream.Readable} [body]
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* @param {any} [extra]
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*/
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async function mreq(method, url, body, extra = {}) {
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if (body == undefined || Object.is(body.constructor, Object)) {
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body = JSON.stringify(body)
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} else if (body instanceof stream.Readable && reg.ooye.content_length_workaround) {
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body = await getStream.buffer(body)
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} else if (body instanceof streamWeb.ReadableStream && reg.ooye.content_length_workaround) {
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body = await stream.consumers.buffer(stream.Readable.fromWeb(body))
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}
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/** @type {RequestInit} */
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const opts = mixin({
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method,
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body,
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headers: {
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Authorization: `Bearer ${reg.as_token}`
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},
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...(body && {duplex: "half"}), // https://github.com/octokit/request.js/pull/571/files
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}, extra)
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// console.log(baseUrl + url, opts)
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const res = await fetch(baseUrl + url, opts)
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const root = await res.json()
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if (!res.ok || root.errcode) {
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if (root.error?.includes("Content-Length") && !reg.ooye.content_length_workaround) {
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reg.ooye.content_length_workaround = true
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const root = await mreq(method, url, body, extra)
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console.error("OOYE cannot stream uploads to Synapse. The `content_length_workaround` option"
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+ "\nhas been activated in registration.yaml, which works around the problem, but"
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+ "\nhalves the speed of bridging d->m files. A better way to resolve this problem"
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+ "\nis to run an nginx reverse proxy to Synapse and re-run OOYE setup.")
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writeRegistration(reg)
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return root
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}
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delete opts.headers?.["Authorization"]
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throw new MatrixServerError(root, {baseUrl, url, ...opts})
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}
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return root
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}
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/**
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* JavaScript doesn't have Racket-like parameters with dynamic scoping, so
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* do NOT do anything else at the same time as this.
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* @template T
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* @param {string} token
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* @param {(...arg: any[]) => Promise<T>} callback
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* @returns {Promise<T>}
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*/
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async function withAccessToken(token, callback) {
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const prevToken = reg.as_token
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reg.as_token = token
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try {
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return await callback()
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} finally {
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reg.as_token = prevToken
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}
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}
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module.exports.MatrixServerError = MatrixServerError
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module.exports.baseUrl = baseUrl
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module.exports.mreq = mreq
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module.exports.withAccessToken = withAccessToken
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