{"ast":null,"code":"'use strict';\n\nvar url = require('url');\n\nvar qs = require('qs');\n\nvar caseless = require('caseless');\n\nvar uuid = require('uuid/v4');\n\nvar oauth = require('oauth-sign');\n\nvar crypto = require('crypto');\n\nvar Buffer = require('safe-buffer').Buffer;\n\nfunction OAuth(request) {\n  this.request = request;\n  this.params = null;\n}\n\nOAuth.prototype.buildParams = function (_oauth, uri, method, query, form, qsLib) {\n  var oa = {};\n\n  for (var i in _oauth) {\n    oa['oauth_' + i] = _oauth[i];\n  }\n\n  if (!oa.oauth_version) {\n    oa.oauth_version = '1.0';\n  }\n\n  if (!oa.oauth_timestamp) {\n    oa.oauth_timestamp = Math.floor(Date.now() / 1000).toString();\n  }\n\n  if (!oa.oauth_nonce) {\n    oa.oauth_nonce = uuid().replace(/-/g, '');\n  }\n\n  if (!oa.oauth_signature_method) {\n    oa.oauth_signature_method = 'HMAC-SHA1';\n  }\n\n  var consumer_secret_or_private_key = oa.oauth_consumer_secret || oa.oauth_private_key; // eslint-disable-line camelcase\n\n  delete oa.oauth_consumer_secret;\n  delete oa.oauth_private_key;\n  var token_secret = oa.oauth_token_secret; // eslint-disable-line camelcase\n\n  delete oa.oauth_token_secret;\n  var realm = oa.oauth_realm;\n  delete oa.oauth_realm;\n  delete oa.oauth_transport_method;\n  var baseurl = uri.protocol + '//' + uri.host + uri.pathname;\n  var params = qsLib.parse([].concat(query, form, qsLib.stringify(oa)).join('&'));\n  oa.oauth_signature = oauth.sign(oa.oauth_signature_method, method, baseurl, params, consumer_secret_or_private_key, // eslint-disable-line camelcase\n  token_secret // eslint-disable-line camelcase\n  );\n\n  if (realm) {\n    oa.realm = realm;\n  }\n\n  return oa;\n};\n\nOAuth.prototype.buildBodyHash = function (_oauth, body) {\n  if (['HMAC-SHA1', 'RSA-SHA1'].indexOf(_oauth.signature_method || 'HMAC-SHA1') < 0) {\n    this.request.emit('error', new Error('oauth: ' + _oauth.signature_method + ' signature_method not supported with body_hash signing.'));\n  }\n\n  var shasum = crypto.createHash('sha1');\n  shasum.update(body || '');\n  var sha1 = shasum.digest('hex');\n  return Buffer.from(sha1, 'hex').toString('base64');\n};\n\nOAuth.prototype.concatParams = function (oa, sep, wrap) {\n  wrap = wrap || '';\n  var params = Object.keys(oa).filter(function (i) {\n    return i !== 'realm' && i !== 'oauth_signature';\n  }).sort();\n\n  if (oa.realm) {\n    params.splice(0, 0, 'realm');\n  }\n\n  params.push('oauth_signature');\n  return params.map(function (i) {\n    return i + '=' + wrap + oauth.rfc3986(oa[i]) + wrap;\n  }).join(sep);\n};\n\nOAuth.prototype.onRequest = function (_oauth) {\n  var self = this;\n  self.params = _oauth;\n  var uri = self.request.uri || {};\n  var method = self.request.method || '';\n  var headers = caseless(self.request.headers);\n  var body = self.request.body || '';\n  var qsLib = self.request.qsLib || qs;\n  var form;\n  var query;\n  var contentType = headers.get('content-type') || '';\n  var formContentType = 'application/x-www-form-urlencoded';\n  var transport = _oauth.transport_method || 'header';\n\n  if (contentType.slice(0, formContentType.length) === formContentType) {\n    contentType = formContentType;\n    form = body;\n  }\n\n  if (uri.query) {\n    query = uri.query;\n  }\n\n  if (transport === 'body' && (method !== 'POST' || contentType !== formContentType)) {\n    self.request.emit('error', new Error('oauth: transport_method of body requires POST ' + 'and content-type ' + formContentType));\n  }\n\n  if (!form && typeof _oauth.body_hash === 'boolean') {\n    _oauth.body_hash = self.buildBodyHash(_oauth, self.request.body.toString());\n  }\n\n  var oa = self.buildParams(_oauth, uri, method, query, form, qsLib);\n\n  switch (transport) {\n    case 'header':\n      self.request.setHeader('Authorization', 'OAuth ' + self.concatParams(oa, ',', '\"'));\n      break;\n\n    case 'query':\n      var href = self.request.uri.href += (query ? 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strict'\n\nvar url = require('url')\nvar qs = require('qs')\nvar caseless = require('caseless')\nvar uuid = require('uuid/v4')\nvar oauth = require('oauth-sign')\nvar crypto = require('crypto')\nvar Buffer = require('safe-buffer').Buffer\n\nfunction OAuth (request) {\n  this.request = request\n  this.params = null\n}\n\nOAuth.prototype.buildParams = function (_oauth, uri, method, query, form, qsLib) {\n  var oa = {}\n  for (var i in _oauth) {\n    oa['oauth_' + i] = _oauth[i]\n  }\n  if (!oa.oauth_version) {\n    oa.oauth_version = '1.0'\n  }\n  if (!oa.oauth_timestamp) {\n    oa.oauth_timestamp = Math.floor(Date.now() / 1000).toString()\n  }\n  if (!oa.oauth_nonce) {\n    oa.oauth_nonce = uuid().replace(/-/g, '')\n  }\n  if (!oa.oauth_signature_method) {\n    oa.oauth_signature_method = 'HMAC-SHA1'\n  }\n\n  var consumer_secret_or_private_key = oa.oauth_consumer_secret || oa.oauth_private_key // eslint-disable-line camelcase\n  delete oa.oauth_consumer_secret\n  delete oa.oauth_private_key\n\n  var token_secret = oa.oauth_token_secret // eslint-disable-line camelcase\n  delete oa.oauth_token_secret\n\n  var realm = oa.oauth_realm\n  delete oa.oauth_realm\n  delete oa.oauth_transport_method\n\n  var baseurl = uri.protocol + '//' + uri.host + uri.pathname\n  var params = qsLib.parse([].concat(query, form, qsLib.stringify(oa)).join('&'))\n\n  oa.oauth_signature = oauth.sign(\n    oa.oauth_signature_method,\n    method,\n    baseurl,\n    params,\n    consumer_secret_or_private_key, // eslint-disable-line camelcase\n    token_secret // eslint-disable-line camelcase\n  )\n\n  if (realm) {\n    oa.realm = realm\n  }\n\n  return oa\n}\n\nOAuth.prototype.buildBodyHash = function (_oauth, body) {\n  if (['HMAC-SHA1', 'RSA-SHA1'].indexOf(_oauth.signature_method || 'HMAC-SHA1') < 0) {\n    this.request.emit('error', new Error('oauth: ' + _oauth.signature_method +\n      ' signature_method not supported with body_hash signing.'))\n  }\n\n  var shasum = crypto.createHash('sha1')\n  shasum.update(body || '')\n  var sha1 = shasum.digest('hex')\n\n  return Buffer.from(sha1, 'hex').toString('base64')\n}\n\nOAuth.prototype.concatParams = function (oa, sep, wrap) {\n  wrap = wrap || ''\n\n  var params = Object.keys(oa).filter(function (i) {\n    return i !== 'realm' && i !== 'oauth_signature'\n  }).sort()\n\n  if (oa.realm) {\n    params.splice(0, 0, 'realm')\n  }\n  params.push('oauth_signature')\n\n  return params.map(function (i) {\n    return i + '=' + wrap + oauth.rfc3986(oa[i]) + wrap\n  }).join(sep)\n}\n\nOAuth.prototype.onRequest = function (_oauth) {\n  var self = this\n  self.params = _oauth\n\n  var uri = self.request.uri || {}\n  var method = self.request.method || ''\n  var headers = caseless(self.request.headers)\n  var body = self.request.body || ''\n  var qsLib = self.request.qsLib || qs\n\n  var form\n  var query\n  var contentType = headers.get('content-type') || ''\n  var formContentType = 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