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node_modules/telegraf/core/network/client.js

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+const debug = require('debug')('telegraf:client')
+const crypto = require('crypto')
+const fetch = require('node-fetch').default
+const fs = require('fs')
+const https = require('https')
+const path = require('path')
+const TelegramError = require('./error')
+const MultipartStream = require('./multipart-stream')
+const { isStream } = MultipartStream
+
+const WEBHOOK_BLACKLIST = [
+  'getChat',
+  'getChatAdministrators',
+  'getChatMember',
+  'getChatMembersCount',
+  'getFile',
+  'getFileLink',
+  'getGameHighScores',
+  'getMe',
+  'getUserProfilePhotos',
+  'getWebhookInfo',
+  'exportChatInviteLink'
+]
+
+const DEFAULT_EXTENSIONS = {
+  audio: 'mp3',
+  photo: 'jpg',
+  sticker: 'webp',
+  video: 'mp4',
+  animation: 'mp4',
+  video_note: 'mp4',
+  voice: 'ogg'
+}
+
+const DEFAULT_OPTIONS = {
+  apiRoot: 'https://api.telegram.org',
+  webhookReply: true,
+  agent: new https.Agent({
+    keepAlive: true,
+    keepAliveMsecs: 10000
+  })
+}
+
+const WEBHOOK_REPLY_STUB = {
+  webhook: true,
+  details: 'https://core.telegram.org/bots/api#making-requests-when-getting-updates'
+}
+
+function safeJSONParse (text) {
+  try {
+    return JSON.parse(text)
+  } catch (err) {
+    debug('JSON parse failed', err)
+  }
+}
+
+function includesMedia (payload) {
+  return Object.keys(payload).some(
+    (key) => {
+      const value = payload[key]
+      if (Array.isArray(value)) {
+        return value.some(({ media }) => media && typeof media === 'object' && (media.source || media.url))
+      }
+      return (typeof value === 'object') && (
+        value.source ||
+        value.url ||
+        (typeof value.media === 'object' && (value.media.source || value.media.url))
+      )
+    }
+  )
+}
+
+function buildJSONConfig (payload) {
+  return Promise.resolve({
+    method: 'POST',
+    compress: true,
+    headers: { 'content-type': 'application/json', connection: 'keep-alive' },
+    body: JSON.stringify(payload)
+  })
+}
+
+const FORM_DATA_JSON_FIELDS = [
+  'results',
+  'reply_markup',
+  'mask_position',
+  'shipping_options',
+  'errors'
+]
+
+function buildFormDataConfig (payload, agent) {
+  for (const field of FORM_DATA_JSON_FIELDS) {
+    if (field in payload && typeof payload[field] !== 'string') {
+      payload[field] = JSON.stringify(payload[field])
+    }
+  }
+  const boundary = crypto.randomBytes(32).toString('hex')
+  const formData = new MultipartStream(boundary)
+  const tasks = Object.keys(payload).map((key) => attachFormValue(formData, key, payload[key], agent))
+  return Promise.all(tasks).then(() => {
+    return {
+      method: 'POST',
+      compress: true,
+      headers: { 'content-type': `multipart/form-data; boundary=${boundary}`, connection: 'keep-alive' },
+      body: formData
+    }
+  })
+}
+
+function attachFormValue (form, id, value, agent) {
+  if (!value) {
+    return Promise.resolve()
+  }
+  const valueType = typeof value
+  if (valueType === 'string' || valueType === 'boolean' || valueType === 'number') {
+    form.addPart({
+      headers: { 'content-disposition': `form-data; name="${id}"` },
+      body: `${value}`
+    })
+    return Promise.resolve()
+  }
+  if (id === 'thumb') {
+    const attachmentId = crypto.randomBytes(16).toString('hex')
+    return attachFormMedia(form, value, attachmentId, agent)
+      .then(() => form.addPart({
+        headers: { 'content-disposition': `form-data; name="${id}"` },
+        body: `attach://${attachmentId}`
+      }))
+  }
+  if (Array.isArray(value)) {
+    return Promise.all(
+      value.map((item) => {
+        if (typeof item.media !== 'object') {
+          return Promise.resolve(item)
+        }
+        const attachmentId = crypto.randomBytes(16).toString('hex')
+        return attachFormMedia(form, item.media, attachmentId, agent)
+          .then(() => ({ ...item, media: `attach://${attachmentId}` }))
+      })
+    ).then((items) => form.addPart({
+      headers: { 'content-disposition': `form-data; name="${id}"` },
+      body: JSON.stringify(items)
+    }))
+  }
+  if (typeof value.media !== 'undefined' && typeof value.type !== 'undefined') {
+    const attachmentId = crypto.randomBytes(16).toString('hex')
+    return attachFormMedia(form, value.media, attachmentId, agent)
+      .then(() => form.addPart({
+        headers: { 'content-disposition': `form-data; name="${id}"` },
+        body: JSON.stringify({
+          ...value,
+          media: `attach://${attachmentId}`
+        })
+      }))
+  }
+  return attachFormMedia(form, value, id, agent)
+}
+
+function attachFormMedia (form, media, id, agent) {
+  let fileName = media.filename || `${id}.${DEFAULT_EXTENSIONS[id] || 'dat'}`
+  if (media.url) {
+    return fetch(media.url, { agent }).then((res) =>
+      form.addPart({
+        headers: { 'content-disposition': `form-data; name="${id}"; filename="${fileName}"` },
+        body: res.body
+      })
+    )
+  }
+  if (media.source) {
+    if (fs.existsSync(media.source)) {
+      fileName = media.filename || path.basename(media.source)
+      media.source = fs.createReadStream(media.source)
+    }
+    if (isStream(media.source) || Buffer.isBuffer(media.source)) {
+      form.addPart({
+        headers: { 'content-disposition': `form-data; name="${id}"; filename="${fileName}"` },
+        body: media.source
+      })
+    }
+  }
+  return Promise.resolve()
+}
+
+function isKoaResponse (response) {
+  return typeof response.set === 'function' && typeof response.header === 'object'
+}
+
+function answerToWebhook (response, payload = {}, options) {
+  if (!includesMedia(payload)) {
+    if (isKoaResponse(response)) {
+      response.body = payload
+      return Promise.resolve(WEBHOOK_REPLY_STUB)
+    }
+    if (!response.headersSent) {
+      response.setHeader('content-type', 'application/json')
+    }
+    return new Promise((resolve) => {
+      if (response.end.length === 2) {
+        response.end(JSON.stringify(payload), 'utf-8')
+        return resolve(WEBHOOK_REPLY_STUB)
+      }
+      response.end(JSON.stringify(payload), 'utf-8', () => resolve(WEBHOOK_REPLY_STUB))
+    })
+  }
+
+  return buildFormDataConfig(payload, options.agent)
+    .then(({ headers, body }) => {
+      if (isKoaResponse(response)) {
+        Object.keys(headers).forEach(key => response.set(key, headers[key]))
+        response.body = body
+        return Promise.resolve(WEBHOOK_REPLY_STUB)
+      }
+      if (!response.headersSent) {
+        Object.keys(headers).forEach(key => response.setHeader(key, headers[key]))
+      }
+      return new Promise((resolve) => {
+        response.on('finish', () => resolve(WEBHOOK_REPLY_STUB))
+        body.pipe(response)
+      })
+    })
+}
+
+class ApiClient {
+  constructor (token, options, webhookResponse) {
+    this.token = token
+    this.options = {
+      ...DEFAULT_OPTIONS,
+      ...options
+    }
+    if (this.options.apiRoot.startsWith('http://')) {
+      this.options.agent = null
+    }
+    this.response = webhookResponse
+  }
+
+  set webhookReply (enable) {
+    this.options.webhookReply = enable
+  }
+
+  get webhookReply () {
+    return this.options.webhookReply
+  }
+
+  callApi (method, data = {}) {
+    const { token, options, response, responseEnd } = this
+
+    const payload = Object.keys(data)
+      .filter((key) => typeof data[key] !== 'undefined' && data[key] !== null)
+      .reduce((acc, key) => ({ ...acc, [key]: data[key] }), {})
+
+    if (options.webhookReply && response && !responseEnd && !WEBHOOK_BLACKLIST.includes(method)) {
+      debug('Call via webhook', method, payload)
+      this.responseEnd = true
+      return answerToWebhook(response, { method, ...payload }, options)
+    }
+
+    if (!token) {
+      throw new TelegramError({ error_code: 401, description: 'Bot Token is required' })
+    }
+
+    debug('HTTP call', method, payload)
+    const buildConfig = includesMedia(payload)
+      ? buildFormDataConfig({ method, ...payload }, options.agent)
+      : buildJSONConfig(payload)
+    return buildConfig
+      .then((config) => {
+        const apiUrl = `${options.apiRoot}/bot${token}/${method}`
+        config.agent = options.agent
+        return fetch(apiUrl, config)
+      })
+      .then((res) => res.text())
+      .then((text) => {
+        return safeJSONParse(text) || {
+          error_code: 500,
+          description: 'Unsupported http response from Telegram',
+          response: text
+        }
+      })
+      .then((data) => {
+        if (!data.ok) {
+          debug('API call failed', data)
+          throw new TelegramError(data, { method, payload })
+        }
+        return data.result
+      })
+  }
+}
+
+module.exports = ApiClient

node_modules/telegraf/core/network/error.js

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+class TelegramError extends Error {
+  constructor (payload = {}, on) {
+    super(`${payload.error_code}: ${payload.description}`)
+    this.code = payload.error_code
+    this.response = payload
+    this.description = payload.description
+    this.parameters = payload.parameters || {}
+    this.on = on || {}
+  }
+}
+
+module.exports = TelegramError

node_modules/telegraf/core/network/multipart-stream.js

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+const stream = require('stream')
+const { SandwichStream } = require('sandwich-stream')
+const CRNL = '\r\n'
+
+class MultipartStream extends SandwichStream {
+  constructor (boundary) {
+    super({
+      head: `--${boundary}${CRNL}`,
+      tail: `${CRNL}--${boundary}--`,
+      separator: `${CRNL}--${boundary}${CRNL}`
+    })
+  }
+
+  addPart (part) {
+    part = part || {}
+    const partStream = new stream.PassThrough()
+    if (part.headers) {
+      for (const key in part.headers) {
+        const header = part.headers[key]
+        partStream.write(`${key}:${header}${CRNL}`)
+      }
+    }
+    partStream.write(CRNL)
+    if (MultipartStream.isStream(part.body)) {
+      part.body.pipe(partStream)
+    } else {
+      partStream.end(part.body)
+    }
+    this.add(partStream)
+  }
+
+  static isStream (stream) {
+    return stream && typeof stream === 'object' && typeof stream.pipe === 'function'
+  }
+}
+
+module.exports = MultipartStream

node_modules/telegraf/core/network/webhook.js

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+const debug = require('debug')('telegraf:webhook')
+
+module.exports = function (hookPath, updateHandler, errorHandler) {
+  return (req, res, next) => {
+    debug('Incoming request', req.method, req.url)
+    if (req.method !== 'POST' || req.url !== hookPath) {
+      if (typeof next === 'function') {
+        return next()
+      }
+      res.statusCode = 403
+      return res.end()
+    }
+    let body = ''
+    req.on('data', (chunk) => {
+      body += chunk.toString()
+    })
+    req.on('end', () => {
+      let update = {}
+      try {
+        update = JSON.parse(body)
+      } catch (error) {
+        res.writeHead(415)
+        res.end()
+        return errorHandler(error)
+      }
+      updateHandler(update, res)
+        .then(() => {
+          if (!res.finished) {
+            res.end()
+          }
+        })
+        .catch((err) => {
+          debug('Webhook error', err)
+          res.writeHead(500)
+          res.end()
+        })
+    })
+  }
+}