API server

2019-01-11 19:36:58 +02:00 · 2019-01-11 19:36:58 +02:00 · e0cc8e5aaf
commit e0cc8e5aaf
parent 9fb536c064
11 changed files with 597 additions and 12 deletions
--- a/control/api.js
+++ b/control/api.js
@ -0,0 +1,131 @@
+const path = require('path')
+const express = require('express')
+const bodyParser = require('body-parser')
+
+require('express-async-errors')
+
+const config = require(path.join(__dirname, 'config.js'))
+
+const app = express()
+const port = config.api.port
+const host = config.api.host
+const mount = config.api.mount
+
+app.enable('trust proxy', 1)
+app.disable('x-powered-by')
+
+app.use(bodyParser.urlencoded({ extended: false }))
+app.use(bodyParser.json())
+
+const apiRouter = express.Router()
+const internalRouter = express.Router()
+
+// Make sure internal router can only be accessed from local network
+internalRouter.use(function (req, res, next) {
+  if (req.ip !== '127.0.0.1' && req.ip !== '::1') {
+    return res.status(401).end('401 Unauthorized. Accessed internal API endpoint!')
+  }
+
+  next()
+})
+
+// Call this here to prevent key from being required on internal endpoints
+apiRouter.use('/internal', internalRouter)
+
+// Key-based authorization for API endpoints
+apiRouter.use(function (req, res, next) {
+  let key = req.query.key
+
+  // Prefer headers for authentication
+  if (req.headers['authorization'] && typeof req.headers['authorization'] === 'string') {
+    let auth = req.headers['authorization']
+    if (auth.indexOf('Bearer') !== -1) return next(new Error('Invalid authorization header!'))
+    auth = auth.split(' ')[1]
+
+    if (!auth) return next(new Error('Invalid authorization header!'))
+    key = auth
+  }
+
+  if (!key || config.api.keys.indexOf(key) === -1) return res.status(403).end('403 Forbidden')
+  req.key = key
+  next()
+})
+
+module.exports = function (liq, sched) {
+  // Schedule actions
+  apiRouter.get('/events', (req, res) => {
+    res.jsonp({
+      calendar: config.calendar.calendar,
+      events: sched.events
+    })
+  })
+
+  apiRouter.post('/events/reload', async (req, res) => {
+    await sched.calendarFetch()
+    await sched.update()
+    res.status(204).end()
+  })
+
+  // Liquidsoap status
+  apiRouter.get('/', (req, res) => {
+    res.jsonp({
+      time: new Date(),
+      authorization: req.key,
+      liquidsoap: {
+        status: liq.running,
+        meta: liq.metadata
+      }
+    })
+  })
+
+  apiRouter.get('/meta', (req, res) => {
+    res.jsonp(liq.metadata)
+  })
+
+  // Liquidsoap actions
+  apiRouter.post('/queue', (req, res) => {
+    let items = req.body.items
+    if (typeof items === 'string') items = [items]
+    else if (!items || !items.length) return res.status(400).end('400 Bad Request')
+    liq.queue(items)
+    res.status(202).end('OK')
+  })
+
+  apiRouter.post('/skip', (req, res) => {
+    liq.skip()
+    res.status(202).end('OK')
+  })
+
+  // Internal router (Only accessible from localhost, no matter the host setting)
+  // Used by liquidsoap
+  internalRouter.post('/meta', (req, res) => {
+    let m = req.body
+
+    if (Object.keys(m).length === 0) {
+      return res.send('(none)')
+    }
+
+    liq.metadata = m
+    res.send(JSON.stringify(m, null, 1))
+  })
+
+  app.use(mount, apiRouter)
+
+  // Handle 404
+  app.use((req, res, next) => {
+    res.status(404).end('404 Not Found')
+  })
+
+  // Handle errors
+  app.use((error, req, res, next) => {
+    console.error(error.stack)
+    if (app.get('env') === 'production') {
+      return res.status(500).end('Internal Server Error: ' + error.message)
+    }
+
+    res.status(500).end(error.stack)
+  })
+
+  // And finally, listen on the configured port and host
+  app.listen(port, host, () => console.log(`API server listening on ${host}:${port}${mount}`))
+}
--- a/control/config.js
+++ b/control/config.js
@ -4,9 +4,10 @@ const configFile = path.join(__dirname, '..', 'config.json')

 const defvals = {
  api: {
-    host: '0.0.0.0',
+    host: '127.0.0.1',
    port: 7005,
-    mount: '/api'
+    mount: '/api',
+    keys: []
  },
  rtmp: {
    host: 'icynet.eu:1935',
--- a/control/index.js
+++ b/control/index.js
@ -5,13 +5,15 @@ const Scheduler = require(path.join(__dirname, 'schedule.js'))
 const rl = require(path.join(__dirname, 'console.js')).rl

 let liq = new Liquidsoap()
-liq.start()
+if (process.env.LIQUIDSOAP_AUTOSTART !== 'false') liq.start()

 let scheduler = new Scheduler(config.calendar)
 scheduler.startTimers()

 scheduler.on('event-start', (event) => liq.queue(event.descriptor))

+require(path.join(__dirname, 'api.js'))(liq, scheduler)
+
 // User input handler
 rl.on('line', function (line) {
  let argv = line.split(' ')
@ -43,7 +45,10 @@ rl.on('line', function (line) {
      break
    case 'events':
      console.log('Refreshing scheduler..')
-      scheduler.calendarFetch().catch((e) => console.error('Calendar fetch failed!', e.stack))
+      Promise.all([
+        scheduler.calendarFetch(),
+        scheduler.update()
+      ]).catch((e) => console.error('Calendar fetch failed!', e.stack))
      break
    case 'reload':
      console.log('Reloading configuration..')
--- a/control/liquidsoap.js
+++ b/control/liquidsoap.js
@ -17,9 +17,44 @@ function printProcessOutput (fn) {
  }
 }

+function sanitizeMetadata (meta) {
+  let final = {}
+  for (let key in meta) {
+    let value = meta[key]
+    if (!value) continue
+    if (value === 'true') value = true
+    if (value === 'false') value = false
+    if (value.match && value.match(/^\d+\/\d+\/\d+ \d+:\d+:\d+$/)) value = new Date(value)
+    if (!isNaN(parseFloat(value))) value = parseFloat(value)
+    if (key === 'start') value = new Date(value * 1000)
+
+    if (value.indexOf && value.indexOf('(dot)') !== -1) {
+      value = value.replace('(dot)', '.')
+    }
+
+    if (key.indexOf('-') !== -1) {
+      key = key.replace(/\-/g, '_')
+    }
+
+    final[key] = value
+  }
+  return final
+}
+
 class Liquidsoap {
  constructor () {
    this.running = false
+    this.meta = {}
+  }
+
+  set metadata (mdt) {
+    mdt = sanitizeMetadata(mdt)
+    mdt.is_fallback = (mdt.source && mdt.source === config.liquidsoap.fallback)
+    this.meta = mdt
+  }
+
+  get metadata () {
+    return this.meta
  }

  start () {
@ -52,8 +87,7 @@ class Liquidsoap {
          client.write(split[i] + '\r\n')
        }

-        client.write('quit\r\n')
-        client.end()
+        client.end('quit\r\n')

        resolve()
      })
@ -65,7 +99,12 @@ class Liquidsoap {

    let q = []
    for (let i in item) {
-      q.push('queue.push smart:' + item[i])
+      let ii = item[i]
+      if (typeof ii !== 'string') continue
+      if (ii.indexOf('smart:') !== 0 && ii.indexOf('annotate:') !== 0) {
+        ii = 'smart:' + ii
+      }
+      q.push('queue.push ' + ii)
    }

    this.sendCommand(q.join('\n')).catch((e) => console.error('Failed to queue:', e.message))
--- a/index.js
+++ b/index.js
@ -20,6 +20,8 @@ for (let i in process.argv) {
  } else if (arg === '-p') {
    env = 'production'
    break
+  } else if (arg === '-s') {
+    process.env.LIQUIDSOAP_AUTOSTART = 'false'
  }
 }

--- a/liq/metadata.liq
+++ b/liq/metadata.liq
@ -0,0 +1,37 @@
+# send metadata to server and print the response
+def send_metadata(m)
+	data = json_of(m)
+	# print("Sending metadata: "^data)
+	ignore(http.post(
+		data    = data,
+		headers = [("Content-Type", "application/json; charset=utf-8")],
+		timeout = 10.0,
+		"http://#{confstr('api.host', 'localhost')}:#{confstr('api.port', '7005')}#{confstr('api.mount', 'api')}/internal/meta"
+	))
+end
+
+def update_nowplaying(m)
+	# Encode all text in UTF-8
+	recode = string.recode(out_enc="UTF-8")
+	def f(x)
+		(recode(fst(x)),recode(snd(x)))
+	end
+
+	m = list.map(f,m)
+
+	# Remove pictures from metadata
+	m = list.remove_assoc("cover", m)
+	m = list.remove_assoc("picture", m)
+
+	# Append start time to metadata
+	m = if m != [] then
+		list.append(
+			[("start", string_of(time()))]
+		, m)
+	else
+		m
+	end
+
+	# Publish to API
+	send_metadata(m)
+end
--- a/liq/scripts/queue
+++ b/liq/scripts/queue
@ -11,7 +11,5 @@ client.once('connect', function () {
  if (process.argv[2]) {
    client.write('queue.push smart:' + process.argv[2] + '\r\n')
  }
-  client.write('quit\r\n')
-  client.end()
+  client.end('quit\r\n')
 })
-
--- a/liq/scripts/smart
+++ b/liq/scripts/smart
@ -15,8 +15,15 @@ function protocol (arg, handleCb) {
  yt.stdout.on('data', function (chunk) {
    output += chunk.toString('utf8')
  })
+
  yt.on('close', function () {
+    try {
      let data = JSON.parse(output)
+    } catch (e) {
+      console.error(e.message)
+      process.exit(1)
+    }
+
    delete data.formats
    fetchVideo(data, handleCb)
  })
--- a/liq/view.liq
+++ b/liq/view.liq
@ -3,6 +3,7 @@
 %include "protocols.liq"
 %include "rtmp.liq"
 %include "utils.liq"
+%include "metadata.liq"

 set("server.telnet", true)
 set("server.telnet.bind_addr", confstr("control.host", "0.0.0.0"))
@ -30,6 +31,7 @@ add_skip_command(command="skip", source)

 # Add file cleanup
 source = on_end(delay=0., file_end_cleanup, source)
+source = on_metadata(update_nowplaying, source)

 # Output to RTMP
 output.rtmp.live(
--- a/package-lock.json
+++ b/package-lock.json
@ -9,6 +9,15 @@
      "resolved": "https://registry.npmjs.org/abbrev/-/abbrev-1.1.1.tgz",
      "integrity": "sha512-nne9/IiQ/hzIhY6pdDnbBtz7DjPTKrY00P/zvPSm5pOFkl6xuGrGnXn/VtTNNfNtAfZ9/1RtehkszU9qcTii0Q=="
    },
+    "accepts": {
+      "version": "1.3.5",
+      "resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.5.tgz",
+      "integrity": "sha1-63d99gEXI6OxTopywIBcjoZ0a9I=",
+      "requires": {
+        "mime-types": "~2.1.18",
+        "negotiator": "0.6.1"
+      }
+    },
    "ansi-regex": {
      "version": "2.1.1",
      "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-2.1.1.tgz",
@ -28,11 +37,43 @@
        "readable-stream": "^2.0.6"
      }
    },
+    "array-flatten": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/array-flatten/-/array-flatten-1.1.1.tgz",
+      "integrity": "sha1-ml9pkFGx5wczKPKgCJaLZOopVdI="
+    },
    "balanced-match": {
      "version": "1.0.0",
      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
      "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c="
    },
+    "body-parser": {
+      "version": "1.18.3",
+      "resolved": "https://registry.npmjs.org/body-parser/-/body-parser-1.18.3.tgz",
+      "integrity": "sha1-WykhmP/dVTs6DyDe0FkrlWlVyLQ=",
+      "requires": {
+        "bytes": "3.0.0",
+        "content-type": "~1.0.4",
+        "debug": "2.6.9",
+        "depd": "~1.1.2",
+        "http-errors": "~1.6.3",
+        "iconv-lite": "0.4.23",
+        "on-finished": "~2.3.0",
+        "qs": "6.5.2",
+        "raw-body": "2.3.3",
+        "type-is": "~1.6.16"
+      },
+      "dependencies": {
+        "iconv-lite": {
+          "version": "0.4.23",
+          "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.4.23.tgz",
+          "integrity": "sha512-neyTUVFtahjf0mB3dZT77u+8O0QB89jFdnBkd5P1JgYPbPaia3gXXOVL2fq8VyU2gMMD7SaN7QukTB/pmXYvDA==",
+          "requires": {
+            "safer-buffer": ">= 2.1.2 < 3"
+          }
+        }
+      }
+    },
    "brace-expansion": {
      "version": "1.1.11",
      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
@ -42,6 +83,11 @@
        "concat-map": "0.0.1"
      }
    },
+    "bytes": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/bytes/-/bytes-3.0.0.tgz",
+      "integrity": "sha1-0ygVQE1olpn4Wk6k+odV3ROpYEg="
+    },
    "canvas": {
      "version": "2.2.0",
      "resolved": "https://registry.npmjs.org/canvas/-/canvas-2.2.0.tgz",
@ -71,6 +117,26 @@
      "resolved": "https://registry.npmjs.org/console-control-strings/-/console-control-strings-1.1.0.tgz",
      "integrity": "sha1-PXz0Rk22RG6mRL9LOVB/mFEAjo4="
    },
+    "content-disposition": {
+      "version": "0.5.2",
+      "resolved": "https://registry.npmjs.org/content-disposition/-/content-disposition-0.5.2.tgz",
+      "integrity": "sha1-DPaLud318r55YcOoUXjLhdunjLQ="
+    },
+    "content-type": {
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/content-type/-/content-type-1.0.4.tgz",
+      "integrity": "sha512-hIP3EEPs8tB9AT1L+NUqtwOAps4mk2Zob89MWXMHjHWg9milF/j4osnnQLXBCBFBk/tvIG/tUc9mOUJiPBhPXA=="
+    },
+    "cookie": {
+      "version": "0.3.1",
+      "resolved": "https://registry.npmjs.org/cookie/-/cookie-0.3.1.tgz",
+      "integrity": "sha1-5+Ch+e9DtMi6klxcWpboBtFoc7s="
+    },
+    "cookie-signature": {
+      "version": "1.0.6",
+      "resolved": "https://registry.npmjs.org/cookie-signature/-/cookie-signature-1.0.6.tgz",
+      "integrity": "sha1-4wOogrNCzD7oylE6eZmXNNqzriw="
+    },
    "core-util-is": {
      "version": "1.0.2",
      "resolved": "https://registry.npmjs.org/core-util-is/-/core-util-is-1.0.2.tgz",
@ -94,11 +160,121 @@
      "resolved": "https://registry.npmjs.org/delegates/-/delegates-1.0.0.tgz",
      "integrity": "sha1-hMbhWbgZBP3KWaDvRM2HDTElD5o="
    },
+    "depd": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/depd/-/depd-1.1.2.tgz",
+      "integrity": "sha1-m81S4UwJd2PnSbJ0xDRu0uVgtak="
+    },
+    "destroy": {
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/destroy/-/destroy-1.0.4.tgz",
+      "integrity": "sha1-l4hXRCxEdJ5CBmE+N5RiBYJqvYA="
+    },
    "detect-libc": {
      "version": "1.0.3",
      "resolved": "https://registry.npmjs.org/detect-libc/-/detect-libc-1.0.3.tgz",
      "integrity": "sha1-+hN8S9aY7fVc1c0CrFWfkaTEups="
    },
+    "ee-first": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/ee-first/-/ee-first-1.1.1.tgz",
+      "integrity": "sha1-WQxhFWsK4vTwJVcyoViyZrxWsh0="
+    },
+    "encodeurl": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/encodeurl/-/encodeurl-1.0.2.tgz",
+      "integrity": "sha1-rT/0yG7C0CkyL1oCw6mmBslbP1k="
+    },
+    "escape-html": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/escape-html/-/escape-html-1.0.3.tgz",
+      "integrity": "sha1-Aljq5NPQwJdN4cFpGI7wBR0dGYg="
+    },
+    "etag": {
+      "version": "1.8.1",
+      "resolved": "https://registry.npmjs.org/etag/-/etag-1.8.1.tgz",
+      "integrity": "sha1-Qa4u62XvpiJorr/qg6x9eSmbCIc="
+    },
+    "express": {
+      "version": "4.16.4",
+      "resolved": "https://registry.npmjs.org/express/-/express-4.16.4.tgz",
+      "integrity": "sha512-j12Uuyb4FMrd/qQAm6uCHAkPtO8FDTRJZBDd5D2KOL2eLaz1yUNdUB/NOIyq0iU4q4cFarsUCrnFDPBcnksuOg==",
+      "requires": {
+        "accepts": "~1.3.5",
+        "array-flatten": "1.1.1",
+        "body-parser": "1.18.3",
+        "content-disposition": "0.5.2",
+        "content-type": "~1.0.4",
+        "cookie": "0.3.1",
+        "cookie-signature": "1.0.6",
+        "debug": "2.6.9",
+        "depd": "~1.1.2",
+        "encodeurl": "~1.0.2",
+        "escape-html": "~1.0.3",
+        "etag": "~1.8.1",
+        "finalhandler": "1.1.1",
+        "fresh": "0.5.2",
+        "merge-descriptors": "1.0.1",
+        "methods": "~1.1.2",
+        "on-finished": "~2.3.0",
+        "parseurl": "~1.3.2",
+        "path-to-regexp": "0.1.7",
+        "proxy-addr": "~2.0.4",
+        "qs": "6.5.2",
+        "range-parser": "~1.2.0",
+        "safe-buffer": "5.1.2",
+        "send": "0.16.2",
+        "serve-static": "1.13.2",
+        "setprototypeof": "1.1.0",
+        "statuses": "~1.4.0",
+        "type-is": "~1.6.16",
+        "utils-merge": "1.0.1",
+        "vary": "~1.1.2"
+      },
+      "dependencies": {
+        "statuses": {
+          "version": "1.4.0",
+          "resolved": "https://registry.npmjs.org/statuses/-/statuses-1.4.0.tgz",
+          "integrity": "sha512-zhSCtt8v2NDrRlPQpCNtw/heZLtfUDqxBM1udqikb/Hbk52LK4nQSwr10u77iopCW5LsyHpuXS0GnEc48mLeew=="
+        }
+      }
+    },
+    "express-async-errors": {
+      "version": "3.1.1",
+      "resolved": "https://registry.npmjs.org/express-async-errors/-/express-async-errors-3.1.1.tgz",
+      "integrity": "sha512-h6aK1da4tpqWSbyCa3FxB/V6Ehd4EEB15zyQq9qe75OZBp0krinNKuH4rAY+S/U/2I36vdLAUFSjQJ+TFmODng=="
+    },
+    "finalhandler": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/finalhandler/-/finalhandler-1.1.1.tgz",
+      "integrity": "sha512-Y1GUDo39ez4aHAw7MysnUD5JzYX+WaIj8I57kO3aEPT1fFRL4sr7mjei97FgnwhAyyzRYmQZaTHb2+9uZ1dPtg==",
+      "requires": {
+        "debug": "2.6.9",
+        "encodeurl": "~1.0.2",
+        "escape-html": "~1.0.3",
+        "on-finished": "~2.3.0",
+        "parseurl": "~1.3.2",
+        "statuses": "~1.4.0",
+        "unpipe": "~1.0.0"
+      },
+      "dependencies": {
+        "statuses": {
+          "version": "1.4.0",
+          "resolved": "https://registry.npmjs.org/statuses/-/statuses-1.4.0.tgz",
+          "integrity": "sha512-zhSCtt8v2NDrRlPQpCNtw/heZLtfUDqxBM1udqikb/Hbk52LK4nQSwr10u77iopCW5LsyHpuXS0GnEc48mLeew=="
+        }
+      }
+    },
+    "forwarded": {
+      "version": "0.1.2",
+      "resolved": "https://registry.npmjs.org/forwarded/-/forwarded-0.1.2.tgz",
+      "integrity": "sha1-mMI9qxF1ZXuMBXPozszZGw/xjIQ="
+    },
+    "fresh": {
+      "version": "0.5.2",
+      "resolved": "https://registry.npmjs.org/fresh/-/fresh-0.5.2.tgz",
+      "integrity": "sha1-PYyt2Q2XZWn6g1qx+OSyOhBWBac="
+    },
    "fs-minipass": {
      "version": "1.2.5",
      "resolved": "https://registry.npmjs.org/fs-minipass/-/fs-minipass-1.2.5.tgz",
@ -145,6 +321,17 @@
      "resolved": "https://registry.npmjs.org/has-unicode/-/has-unicode-2.0.1.tgz",
      "integrity": "sha1-4Ob+aijPUROIVeCG0Wkedx3iqLk="
    },
+    "http-errors": {
+      "version": "1.6.3",
+      "resolved": "https://registry.npmjs.org/http-errors/-/http-errors-1.6.3.tgz",
+      "integrity": "sha1-i1VoC7S+KDoLW/TqLjhYC+HZMg0=",
+      "requires": {
+        "depd": "~1.1.2",
+        "inherits": "2.0.3",
+        "setprototypeof": "1.1.0",
+        "statuses": ">= 1.4.0 < 2"
+      }
+    },
    "iconv-lite": {
      "version": "0.4.24",
      "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.4.24.tgz",
@ -180,6 +367,11 @@
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+      "integrity": "sha1-6qM9bd16zo9/b+DJygRA5wZzix4="
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+      "resolved": "https://registry.npmjs.org/media-typer/-/media-typer-0.3.0.tgz",
+      "integrity": "sha1-hxDXrwqmJvj/+hzgAWhUUmMlV0g="
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+      "integrity": "sha1-VSmk1nZUE07cxSZmVoNbD4Ua/O4="
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+      "resolved": "https://registry.npmjs.org/mime/-/mime-1.4.1.tgz",
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+      "resolved": "https://registry.npmjs.org/mime-db/-/mime-db-1.37.0.tgz",
+      "integrity": "sha512-R3C4db6bgQhlIhPU48fUtdVmKnflq+hRdad7IyKhtFj06VPNVdk2RhiYL3UjQIlso8L+YxAtFkobT0VK+S/ybg=="
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+      "resolved": "https://registry.npmjs.org/mime-types/-/mime-types-2.1.21.tgz",
+      "integrity": "sha512-3iL6DbwpyLzjR3xHSFNFeb9Nz/M8WDkX33t1GFQnFOllWk8pOrh/LSrB5OXlnlW5P9LH73X6loW/eogc+F5lJg==",
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      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.0.4.tgz",
@ -251,6 +476,11 @@
        "sax": "^1.2.4"
      }
    },
+    "negotiator": {
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+      "resolved": "https://registry.npmjs.org/negotiator/-/negotiator-0.6.1.tgz",
+      "integrity": "sha1-KzJxhOiZIQEXeyhWP7XnECrNDKk="
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@ -312,6 +542,14 @@
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      "integrity": "sha1-IQmtx5ZYh8/AXLvUQsrIv7s2CGM="
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+      "integrity": "sha1-IPEzZIGwg811M3mSoWlxqi2QaUc=",
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      "resolved": "https://registry.npmjs.org/once/-/once-1.4.0.tgz",
@ -339,16 +577,66 @@
        "os-tmpdir": "^1.0.0"
      }
    },
+    "parseurl": {
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+      "resolved": "https://registry.npmjs.org/parseurl/-/parseurl-1.3.2.tgz",
+      "integrity": "sha1-/CidTtiZMRlGDBViUyYs3I3mW/M="
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      "resolved": "http://registry.npmjs.org/path-is-absolute/-/path-is-absolute-1.0.1.tgz",
      "integrity": "sha1-F0uSaHNVNP+8es5r9TpanhtcX18="
    },
+    "path-to-regexp": {
+      "version": "0.1.7",
+      "resolved": "https://registry.npmjs.org/path-to-regexp/-/path-to-regexp-0.1.7.tgz",
+      "integrity": "sha1-32BBeABfUi8V60SQ5yR6G/qmf4w="
+    },
    "process-nextick-args": {
      "version": "2.0.0",
      "resolved": "https://registry.npmjs.org/process-nextick-args/-/process-nextick-args-2.0.0.tgz",
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+    "proxy-addr": {
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+      "resolved": "https://registry.npmjs.org/proxy-addr/-/proxy-addr-2.0.4.tgz",
+      "integrity": "sha512-5erio2h9jp5CHGwcybmxmVqHmnCBZeewlfJ0pex+UW7Qny7OOZXTtH56TGNyBizkgiOwhJtMKrVzDTeKcySZwA==",
+      "requires": {
+        "forwarded": "~0.1.2",
+        "ipaddr.js": "1.8.0"
+      }
+    },
+    "qs": {
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+      "resolved": "https://registry.npmjs.org/qs/-/qs-6.5.2.tgz",
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+      "resolved": "https://registry.npmjs.org/range-parser/-/range-parser-1.2.0.tgz",
+      "integrity": "sha1-9JvmtIeJTdxA3MlKMi9hEJLgDV4="
+    },
+    "raw-body": {
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+      "resolved": "https://registry.npmjs.org/raw-body/-/raw-body-2.3.3.tgz",
+      "integrity": "sha512-9esiElv1BrZoI3rCDuOuKCBRbuApGGaDPQfjSflGxdy4oyzqghxu6klEkkVIvBje+FF0BX9coEv8KqW6X/7njw==",
+      "requires": {
+        "bytes": "3.0.0",
+        "http-errors": "1.6.3",
+        "iconv-lite": "0.4.23",
+        "unpipe": "1.0.0"
+      },
+      "dependencies": {
+        "iconv-lite": {
+          "version": "0.4.23",
+          "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.4.23.tgz",
+          "integrity": "sha512-neyTUVFtahjf0mB3dZT77u+8O0QB89jFdnBkd5P1JgYPbPaia3gXXOVL2fq8VyU2gMMD7SaN7QukTB/pmXYvDA==",
+          "requires": {
+            "safer-buffer": ">= 2.1.2 < 3"
+          }
+        }
+      }
+    },
    "rc": {
      "version": "1.2.8",
      "resolved": "https://registry.npmjs.org/rc/-/rc-1.2.8.tgz",
@ -409,16 +697,64 @@
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+    "send": {
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+      "resolved": "https://registry.npmjs.org/send/-/send-0.16.2.tgz",
+      "integrity": "sha512-E64YFPUssFHEFBvpbbjr44NCLtI1AohxQ8ZSiJjQLskAdKuriYEP6VyGEsRDH8ScozGpkaX1BGvhanqCwkcEZw==",
+      "requires": {
+        "debug": "2.6.9",
+        "depd": "~1.1.2",
+        "destroy": "~1.0.4",
+        "encodeurl": "~1.0.2",
+        "escape-html": "~1.0.3",
+        "etag": "~1.8.1",
+        "fresh": "0.5.2",
+        "http-errors": "~1.6.2",
+        "mime": "1.4.1",
+        "ms": "2.0.0",
+        "on-finished": "~2.3.0",
+        "range-parser": "~1.2.0",
+        "statuses": "~1.4.0"
+      },
+      "dependencies": {
+        "statuses": {
+          "version": "1.4.0",
+          "resolved": "https://registry.npmjs.org/statuses/-/statuses-1.4.0.tgz",
+          "integrity": "sha512-zhSCtt8v2NDrRlPQpCNtw/heZLtfUDqxBM1udqikb/Hbk52LK4nQSwr10u77iopCW5LsyHpuXS0GnEc48mLeew=="
+        }
+      }
+    },
+    "serve-static": {
+      "version": "1.13.2",
+      "resolved": "https://registry.npmjs.org/serve-static/-/serve-static-1.13.2.tgz",
+      "integrity": "sha512-p/tdJrO4U387R9oMjb1oj7qSMaMfmOyd4j9hOFoxZe2baQszgHcSWjuya/CiT5kgZZKRudHNOA0pYXOl8rQ5nw==",
+      "requires": {
+        "encodeurl": "~1.0.2",
+        "escape-html": "~1.0.3",
+        "parseurl": "~1.3.2",
+        "send": "0.16.2"
+      }
+    },
    "set-blocking": {
      "version": "2.0.0",
      "resolved": "https://registry.npmjs.org/set-blocking/-/set-blocking-2.0.0.tgz",
      "integrity": "sha1-BF+XgtARrppoA93TgrJDkrPYkPc="
    },
+    "setprototypeof": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/setprototypeof/-/setprototypeof-1.1.0.tgz",
+      "integrity": "sha512-BvE/TwpZX4FXExxOxZyRGQQv651MSwmWKZGqvmPcRIjDqWub67kTKuIMx43cZZrS/cBBzwBcNDWoFxt2XEFIpQ=="
+    },
    "signal-exit": {
      "version": "3.0.2",
      "resolved": "https://registry.npmjs.org/signal-exit/-/signal-exit-3.0.2.tgz",
      "integrity": "sha1-tf3AjxKH6hF4Yo5BXiUTK3NkbG0="
    },
+    "statuses": {
+      "version": "1.5.0",
+      "resolved": "https://registry.npmjs.org/statuses/-/statuses-1.5.0.tgz",
+      "integrity": "sha1-Fhx9rBd2Wf2YEfQ3cfqZOBR4Yow="
+    },
    "string-width": {
      "version": "1.0.2",
      "resolved": "http://registry.npmjs.org/string-width/-/string-width-1.0.2.tgz",
@ -464,11 +800,35 @@
        "yallist": "^3.0.2"
      }
    },
+    "type-is": {
+      "version": "1.6.16",
+      "resolved": "https://registry.npmjs.org/type-is/-/type-is-1.6.16.tgz",
+      "integrity": "sha512-HRkVv/5qY2G6I8iab9cI7v1bOIdhm94dVjQCPFElW9W+3GeDOSHmy2EBYe4VTApuzolPcmgFTN3ftVJRKR2J9Q==",
+      "requires": {
+        "media-typer": "0.3.0",
+        "mime-types": "~2.1.18"
+      }
+    },
+    "unpipe": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/unpipe/-/unpipe-1.0.0.tgz",
+      "integrity": "sha1-sr9O6FFKrmFltIF4KdIbLvSZBOw="
+    },
    "util-deprecate": {
      "version": "1.0.2",
      "resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
      "integrity": "sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8="
    },
+    "utils-merge": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/utils-merge/-/utils-merge-1.0.1.tgz",
+      "integrity": "sha1-n5VxD1CiZ5R7LMwSR0HBAoQn5xM="
+    },
+    "vary": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/vary/-/vary-1.1.2.tgz",
+      "integrity": "sha1-IpnwLG3tMNSllhsLn3RSShj2NPw="
+    },
    "wide-align": {
      "version": "1.1.3",
      "resolved": "https://registry.npmjs.org/wide-align/-/wide-align-1.1.3.tgz",
--- a/package.json
+++ b/package.json
@ -9,6 +9,9 @@
  "author": "Evert \"Diamond\" Prants <evert@lunasqu.ee>",
  "license": "MIT",
  "dependencies": {
-    "canvas": "^2.2.0"
+    "body-parser": "^1.18.3",
+    "canvas": "^2.2.0",
+    "express": "^4.16.4",
+    "express-async-errors": "^3.1.1"
  }
 }