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Viewing file:     response.js (3.12 KB)      -rw-r--r--

var qs = require('qs')


var tokens = (provider, response) => {
  var data = {}

  if (provider.concur) {
    data.access_token = response.replace(
      /[\s\S]+<Token>([^<]+)<\/Token>[\s\S]+/, '$1')
    data.refresh_token = response.replace(
      /[\s\S]+<Refresh_Token>([^<]+)<\/Refresh_Token>[\s\S]+/, '$1')
  }
  else if (provider.getpocket) {
    data.access_token = response.access_token
  }
  else if (provider.yammer) {
    data.access_token = response.access_token.token
  }

  else if (provider.oauth === 1) {
    if (response.oauth_token) {
      data.access_token = response.oauth_token
    }
    if (response.oauth_token_secret) {
      data.access_secret = response.oauth_token_secret
    }
  }
  else if (provider.oauth === 2) {
    if (response.id_token) {
      data.id_token = response.id_token
    }
    if (response.access_token) {
      data.access_token = response.access_token
    }
    if (response.refresh_token) {
      data.refresh_token = response.refresh_token
    }
  }

  return data
}

var oidc = (provider, session, response) => {
  if (!/^[a-zA-Z0-9\-_]+?\.[a-zA-Z0-9\-_]+?\.([a-zA-Z0-9\-_]+)?$/.test(response.id_token)) {
    return {error: 'Grant: OpenID Connect invalid id_token format'}
  }

  var [header, payload, signature] = response.id_token.split('.')

  try {
    header = JSON.parse(Buffer.from(header, 'base64').toString('binary'))
    payload = JSON.parse(Buffer.from(payload, 'base64').toString('utf8'))
  }
  catch (err) {
    return {error: 'Grant: OpenID Connect error decoding id_token'}
  }

  if (![].concat(payload.aud).includes(provider.key)) {
    return {error: 'Grant: OpenID Connect invalid id_token audience'}
  }
  else if (session.nonce && (payload.nonce !== session.nonce)) {
    return {error: 'Grant: OpenID Connect nonce mismatch'}
  }

  return {header, payload, signature}
}

var data = ({provider, input, input:{session}, output}) => {
  if (output.error) {
    return {provider, input, output}
  }

  if (output.id_token) {
    var jwt = oidc(provider, session, output)
    if (jwt.error) {
      return {provider, input, output: jwt}
    }
  }

  if (!provider.response) {
    var data = tokens(provider, output)
    data.raw = output
  }
  else {
    var data = {}
    var response = [].concat(provider.response)
    if (response.find((key) => /token/.test(key))) {
      data = tokens(provider, output)
    }
    if (response.includes('jwt') && jwt) {
      data.jwt = {id_token: jwt}
    }
    if (response.includes('raw')) {
      data.raw = output
    }
  }

  return {provider, input, output: data}
}

var transport = ({provider, input, input:{params, state, session}, output}) => ({
  location:
      (params.override !== 'callback' && !output.error)
    ? output

    : (!provider.transport || provider.transport === 'querystring')
    ? `${provider.callback || '/'}?${qs.stringify(output)}`

    : provider.transport === 'session'
    ? provider.callback

    : undefined,
  session: (
    provider.transport === 'session' ? session.response = output : null,
    session
  ),
  state: (
    provider.transport === 'state' ? state.response = output : null,
    state
  ),
})

module.exports = {data, transport}