cadence/out-of-your-element
cadence/out-of-your-element
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Barebones matrix media proxy

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Cadence Ember 2024-09-13 03:16:03 +12:00
parent eaa3b87670
commit b45d0f3038
9 changed files with 169 additions and 44 deletions
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4
package-lock.json generated
View file

@ -25,6 +25,7 @@
"enquirer": "^2.4.1",
"entities": "^5.0.0",
"get-stream": "^6.0.1",
"h3": "^1.12.0",
"heatsync": "^2.5.3",
"js-yaml": "^4.1.0",
"minimist": "^1.2.8",
@ -34,7 +35,8 @@
"snowtransfer": "^0.10.5",
"stream-mime-type": "^1.0.2",
"try-to-catch": "^3.0.1",
"xxhash-wasm": "^1.0.2"
"xxhash-wasm": "^1.0.2",
"zod": "^3.23.8"
},
"devDependencies": {
"@cloudrac3r/tap-dot": "^2.0.2",

4
package.json
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@ -34,6 +34,7 @@
"enquirer": "^2.4.1",
"entities": "^5.0.0",
"get-stream": "^6.0.1",
"h3": "^1.12.0",
"heatsync": "^2.5.3",
"js-yaml": "^4.1.0",
"minimist": "^1.2.8",
@ -43,7 +44,8 @@
"snowtransfer": "^0.10.5",
"stream-mime-type": "^1.0.2",
"try-to-catch": "^3.0.1",
"xxhash-wasm": "^1.0.2"
"xxhash-wasm": "^1.0.2",
"zod": "^3.23.8"
},
"devDependencies": {
"@cloudrac3r/tap-dot": "^2.0.2",

133
scripts/seed.js
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@ -3,48 +3,63 @@
const assert = require("assert").strict
const fs = require("fs")
const sqlite = require("better-sqlite3")
const {scheduler: {wait}} = require("timers/promises")
const {scheduler} = require("timers/promises")
const {isDeepStrictEqual} = require("util")
const {createServer} = require("http")
const {prompt} = require("enquirer")
const Input = require("enquirer/lib/prompts/input")
const fetch = require("node-fetch")
const {magenta, bold, cyan} = require("ansi-colors")
const HeatSync = require("heatsync")
const {SnowTransfer} = require("snowtransfer")
const {createApp, defineEventHandler, toNodeListener} = require("h3")
const args = require("minimist")(process.argv.slice(2), {string: ["emoji-guild"]})
// Move database file if it's still in the old location
if (fs.existsSync("db")) {
if (fs.existsSync("db/ooye.db")) {
fs.renameSync("db/ooye.db", "src/db/ooye.db")
}
const files = fs.readdirSync("db")
if (files.length) {
console.error("You must manually move or delete the files in the db folder:")
for (const file of files) {
console.error(file)
}
process.exit(1)
}
fs.rmSync("db", {recursive: true})
}
const config = require("../config")
const passthrough = require("../passthrough")
const db = new sqlite("db/ooye.db")
const migrate = require("../db/migrate")
const passthrough = require("../src/passthrough")
const db = new sqlite("src/db/ooye.db")
const migrate = require("../src/db/migrate")
const sync = new HeatSync({watchFS: false})
Object.assign(passthrough, { sync, config, db })
const orm = sync.require("../db/orm")
const orm = sync.require("../src/db/orm")
passthrough.from = orm.from
passthrough.select = orm.select
const DiscordClient = require("../d2m/discord-client")
const discord = new DiscordClient(config.discordToken, "no")
passthrough.discord = discord
let registration = require("../matrix/read-registration")
let {reg, getTemplateRegistration, writeRegistration, readRegistration, registrationFilePath} = registration
let registration = require("../src/matrix/read-registration")
let {reg, getTemplateRegistration, writeRegistration, readRegistration, checkRegistration, registrationFilePath} = registration
function die(message) {
console.error(message)
process.exit(1)
}
async function uploadAutoEmoji(guild, name, filename) {
async function uploadAutoEmoji(snow, guild, name, filename) {
let emoji = guild.emojis.find(e => e.name === name)
if (!emoji) {
console.log(` Uploading ${name}...`)
const data = fs.readFileSync(filename, null)
emoji = await discord.snow.guildAssets.createEmoji(guild.id, {name, image: "data:image/png;base64," + data.toString("base64")})
emoji = await snow.guildAssets.createEmoji(guild.id, {name, image: "data:image/png;base64," + data.toString("base64")})
} else {
console.log(` Reusing ${name}...`)
}
@ -88,46 +103,90 @@ async function validateHomeserverOrigin(serverUrlPrompt, url) {
name: "server_name",
message: "Homeserver name"
})
console.log("What is the URL of your homeserver?")
const serverUrlPrompt = new Input({
const serverOriginPrompt = new Input({
type: "input",
name: "server_origin",
message: "Homeserver URL",
initial: () => `https://${serverNameResponse.server_name}`,
validate: url => validateHomeserverOrigin(serverUrlPrompt, url)
validate: url => validateHomeserverOrigin(serverOriginPrompt, url)
})
/** @type {{server_origin: string}} */ // @ts-ignore
const serverUrlResponse = await serverUrlPrompt.run()
console.log("Your Matrix homeserver needs to be able to send HTTP requests to OOYE.")
console.log("What URL should OOYE be reachable on? Usually, the default works fine,")
console.log("but you need to change this if you use multiple servers or containers.")
/** @type {{url: string}} */
const urlResponse = await prompt({
/** @type {string} */ // @ts-ignore
const serverOrigin = await serverOriginPrompt.run()
const app = createApp()
app.use(defineEventHandler(() => "Out Of Your Element is listening.\n"))
const server = createServer(toNodeListener(app))
await server.listen(6693)
console.log("OOYE has its own web server. It needs to be accessible on the public internet.")
console.log("You need to enter a public URL where you will be able to host this web server.")
console.log("OOYE listens on localhost:6693, so you will probably have to set up a reverse proxy.")
console.log("Now listening on port 6693. Feel free to send some test requests.")
/** @type {{bridge_origin: string}} */
const bridgeOriginResponse = await prompt({
type: "input",
name: "url",
name: "bridge_origin",
message: "URL to reach OOYE",
initial: "http://localhost:6693",
validate: url => !!url.match(/^https?:\/\//)
initial: () => `https://bridge.${serverNameResponse.server_name}`,
validate: async url => {
process.stdout.write(magenta(" checking, please wait..."))
try {
const res = await fetch(url)
if (res.status !== 200) return `Server returned status code ${res.status}`
const text = await res.text()
if (text !== "Out Of Your Element is listening.\n") return `Server does not point to OOYE`
return true
} catch (e) {
return e.message
}
}
})
await server.close()
console.log("What is your Discord bot token?")
/** @type {{discord_token: string}} */
const discordTokenResponse = await prompt({
type: "input",
name: "discord_token",
message: "Bot token",
validate: async token => {
process.stdout.write(magenta(" checking, please wait..."))
try {
const snow = new SnowTransfer(token)
await snow.user.getSelf()
return true
} catch (e) {
return e.message
}
}
})
const template = getTemplateRegistration()
reg = {...template, ...urlResponse, ooye: {...template.ooye, ...serverNameResponse, ...serverUrlResponse}}
reg = {...template, url: bridgeOriginResponse.bridge_origin, ooye: {...template.ooye, ...serverNameResponse, ...bridgeOriginResponse, server_origin: serverOrigin, ...discordTokenResponse}}
registration.reg = reg
checkRegistration(reg)
writeRegistration(reg)
}
// Done with user prompts, reg is now guaranteed to be valid
const api = require("../matrix/api")
const file = require("../matrix/file")
const utils = require("../m2d/converters/utils")
console.log(`✅ Registration file saved as ${registrationFilePath}`)
} else {
console.log(`✅ Valid registration file found at ${registrationFilePath}`)
}
console.log(` In ${cyan("Synapse")}, you need to add it to homeserver.yaml and ${cyan("restart Synapse")}.`)
console.log(" https://element-hq.github.io/synapse/latest/application_services.html")
console.log(` In ${cyan("Conduit")}, you need to send the file contents to the #admins room.`)
console.log(" https://docs.conduit.rs/appservices.html")
console.log()
const {as} = require("../matrix/appservice")
// Done with user prompts, reg is now guaranteed to be valid
const api = require("../src/matrix/api")
const file = require("../src/matrix/file")
const utils = require("../src/m2d/converters/utils")
const DiscordClient = require("../src/d2m/discord-client")
const discord = new DiscordClient(reg.ooye.discord_token, "no")
passthrough.discord = discord
const {as} = require("../src/matrix/appservice")
console.log("⏳ Waiting until homeserver registration works... (Ctrl+C to cancel)")
let itWorks = false
@ -150,7 +209,7 @@ async function validateHomeserverOrigin(serverUrlPrompt, url) {
} else {
process.stderr.write(".")
}
await wait(5000)
await scheduler.wait(5000)
}
} while (!itWorks)
console.log("")
@ -228,8 +287,8 @@ async function validateHomeserverOrigin(serverUrlPrompt, url) {
}
// Upload those emojis to the chosen location
db.prepare("REPLACE INTO auto_emoji (name, emoji_id, guild_id) VALUES ('_', '_', ?)").run(guild.id)
await uploadAutoEmoji(guild, "L1", "docs/img/L1.png")
await uploadAutoEmoji(guild, "L2", "docs/img/L2.png")
await uploadAutoEmoji(discord.snow, guild, "L1", "docs/img/L1.png")
await uploadAutoEmoji(discord.snow, guild, "L2", "docs/img/L2.png")
}
console.log("✅ Emojis are ready...")

4
src/db/orm-defs.d.ts vendored
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@ -100,6 +100,10 @@ export type Models = {
emoji_id: string
guild_id: string
}
media_proxy: {
permitted_hash: number
}
}
export type Prepared<Row> = {

7
src/matrix/read-registration.js
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@ -28,9 +28,9 @@ function writeRegistration(reg) {
/** @returns {import("../types").InitialAppServiceRegistrationConfig} reg */
function getTemplateRegistration() {
return {
id: crypto.randomBytes(16).toString("hex"),
as_token: crypto.randomBytes(16).toString("hex"),
hs_token: crypto.randomBytes(16).toString("hex"),
id: "ooye",
as_token: crypto.randomBytes(32).toString("hex"),
hs_token: crypto.randomBytes(32).toString("hex"),
namespaces: {
users: [{
exclusive: true,
@ -46,6 +46,7 @@ function getTemplateRegistration() {
],
sender_localpart: "_ooye_bot",
rate_limited: false,
socket: 6693,
ooye: {
namespace_prefix: "_ooye_",
max_file_size: 5000000,

3
src/types.d.ts vendored
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@ -16,12 +16,14 @@ export type AppServiceRegistrationConfig = {
}
protocols: [string]
rate_limited: boolean
socket?: string | number,
ooye: {
namespace_prefix: string
max_file_size: number
server_name: string
server_origin: string
bridge_origin: string
discord_token: string
content_length_workaround: boolean
include_user_id_in_mxid: boolean
invite: string[]
@ -49,6 +51,7 @@ export type InitialAppServiceRegistrationConfig = {
}
protocols: [string]
rate_limited: boolean
socket?: string | number,
ooye: {
namespace_prefix: string
max_file_size: number,

48
src/web/routes/download-matrix.js Normal file
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@ -0,0 +1,48 @@
// @ts-check
const {defineEventHandler, getValidatedRouterParams, setResponseStatus, setResponseHeader, sendStream, createError} = require("h3")
const {z} = require("zod")
const fetch = require("node-fetch")
/** @type {import("xxhash-wasm").XXHashAPI} */ // @ts-ignore
let hasher = null
// @ts-ignore
require("xxhash-wasm")().then(h => hasher = h)
const {reg} = require("../../matrix/read-registration")
const {as, select} = require("../../passthrough")
const schema = {
params: z.object({
server_name: z.string(),
media_id: z.string()
})
}
as.router.get(`/download/matrix/:server_name/:media_id`, defineEventHandler(async event => {
const params = await getValidatedRouterParams(event, schema.params.parse)
const serverAndMediaID = `${params.server_name}/${params.media_id}`
const unsignedHash = hasher.h64(serverAndMediaID)
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,
data: `The file you requested isn't permitted by this media proxy.`
})
}
const res = await fetch(`${reg.ooye.server_origin}/_matrix/client/v1/media/download/${params.server_name}/${params.media_id}`, {
headers: {
Authorization: `Bearer ${reg.as_token}`
}
})
setResponseStatus(event, res.status)
setResponseHeader(event, "Content-Type", res.headers.get("content-type"))
setResponseHeader(event, "Transfer-Encoding", "chunked")
return sendStream(event, res.body)
}))

5
src/web/server.js Normal file
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@ -0,0 +1,5 @@
// @ts-check
const {sync, as} = require("../passthrough")
sync.require("./routes/download-matrix")

5
start.js
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@ -15,7 +15,7 @@ Object.assign(passthrough, {config, sync, db})
const DiscordClient = require("./src/d2m/discord-client")
const discord = new DiscordClient(config.discordToken, "full")
const discord = new DiscordClient(config.discordToken, "no")
passthrough.discord = discord
const {as} = require("./src/matrix/appservice")
@ -26,12 +26,13 @@ passthrough.from = orm.from
passthrough.select = orm.select
const power = require("./src/matrix/power.js")
sync.require("./src/m2d/event-dispatcher")
// sync.require("./src/m2d/event-dispatcher")
;(async () => {
await migrate.migrate(db)
await discord.cloud.connect()
console.log("Discord gateway started")
sync.require("./src/web/server")
await power.applyPower()
require("./src/stdin")