102 lines
3.5 KiB
Ruby
102 lines
3.5 KiB
Ruby
# frozen_string_literal: true
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# BigBlueButton open source conferencing system - http://www.bigbluebutton.org/.
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#
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# Copyright (c) 2018 BigBlueButton Inc. and by respective authors (see below).
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#
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# This program is free software; you can redistribute it and/or modify it under the
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# terms of the GNU Lesser General Public License as published by the Free Software
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# Foundation; either version 3.0 of the License, or (at your option) any later
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# version.
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#
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# BigBlueButton is distributed in the hope that it will be useful, but WITHOUT ANY
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# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
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# PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public License along
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# with BigBlueButton; if not, see <http://www.gnu.org/licenses/>.
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module APIConcern
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extend ActiveSupport::Concern
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def bbb_endpoint
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Rails.configuration.bigbluebutton_endpoint
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end
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def bbb_secret
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Rails.configuration.bigbluebutton_secret
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end
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# Sets a BigBlueButtonApi object for interacting with the API.
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def bbb
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@bbb ||= if Rails.configuration.loadbalanced_configuration
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lb_user = retrieve_loadbalanced_credentials(owner.provider)
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BigBlueButton::BigBlueButtonApi.new(remove_slash(lb_user["apiURL"]), lb_user["secret"], "0.8")
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else
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BigBlueButton::BigBlueButtonApi.new(remove_slash(bbb_endpoint), bbb_secret, "0.8")
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end
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end
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# Rereives the loadbalanced BigBlueButton credentials for a user.
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def retrieve_loadbalanced_credentials(provider)
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# Include Omniauth accounts under the Greenlight provider.
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provider = "greenlight" if Rails.configuration.providers.include?(provider.to_sym)
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# Build the URI.
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uri = encode_bbb_url(
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Rails.configuration.loadbalancer_endpoint + "getUser",
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Rails.configuration.loadbalancer_secret,
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name: provider
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)
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# Make the request.
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http = Net::HTTP.new(uri.host, uri.port)
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http.use_ssl = (uri.scheme == 'https')
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response = http.get(uri.request_uri)
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unless response.is_a?(Net::HTTPSuccess)
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raise "Error retrieving provider credentials: #{response.code} #{response.message}"
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end
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# Parse XML.
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doc = XmlSimple.xml_in(response.body, 'ForceArray' => false)
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# Return the user credentials if the request succeeded on the loadbalancer.
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return doc['user'] if doc['returncode'] == RETURNCODE_SUCCESS
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raise "User with provider #{provider} does not exist." if doc['messageKey'] == "noSuchUser"
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raise "API call #{url} failed with #{doc['messageKey']}."
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end
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# Builds a request to retrieve credentials from the load balancer.
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def encode_bbb_url(base_url, secret, params)
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encoded_params = OAuth::Helper.normalize(params)
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string = "getUser" + encoded_params + secret
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checksum = OpenSSL::Digest.digest('sha1', string).unpack("H*").first
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URI.parse("#{base_url}?#{encoded_params}&checksum=#{checksum}")
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end
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# Removes trailing forward slash from a URL.
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def remove_slash(s)
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s.nil? ? nil : s.chomp("/")
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end
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# Format recordings to match their current use in the app
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def format_recordings(api_res)
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api_res[:recordings].each do |r|
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next if r.key?(:error)
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# Format playbacks in a more pleasant way.
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r[:playbacks] = if !r[:playback] || !r[:playback][:format]
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[]
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elsif r[:playback][:format].is_a?(Array)
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r[:playback][:format]
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else
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[r[:playback][:format]]
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end
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r.delete(:playback)
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end
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api_res[:recordings].sort_by { |rec| rec[:endTime] }.reverse
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end
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end
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