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117 lines
3.3 KiB
Ruby
117 lines
3.3 KiB
Ruby
require "openssl"
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class WebhooksController < ActionController::Base
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def mailgun
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# can't verify data without an API key
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return mailgun_failure if SiteSetting.mailgun_api_key.blank?
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# token is a random string of 50 characters
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token = params["token"]
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return mailgun_failure if token.blank? || token.size != 50
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# prevent replay attack
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key = "mailgun_token_#{token}"
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return mailgun_failure unless $redis.setnx(key, 1)
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$redis.expire(key, 10.minutes)
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# ensure timestamp isn't too far from current time
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timestamp = params["timestamp"]
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return mailgun_failure if (Time.at(timestamp.to_i) - Time.now).abs > 24.hours.to_i
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# check the signature
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return mailgun_failure unless mailgun_verify(timestamp, token, params["signature"])
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event = params["event"]
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message_id = params["Message-Id"].tr("<>", "")
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# only handle soft bounces, because hard bounces are also handled
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# by the "dropped" event and we don't want to increase bounce score twice
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# for the same message
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if event == "bounced".freeze && params["error"]["4."]
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process_bounce(message_id, SiteSetting.soft_bounce_score)
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elsif event == "dropped".freeze
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process_bounce(message_id, SiteSetting.hard_bounce_score)
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end
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mailgun_success
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end
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def sendgrid
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events = params["_json"] || [params]
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events.each do |event|
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message_id = (event["smtp-id"] || "").tr("<>", "")
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if event["event"] == "bounce".freeze
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if event["status"]["4."]
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process_bounce(message_id, SiteSetting.soft_bounce_score)
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else
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process_bounce(message_id, SiteSetting.hard_bounce_score)
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end
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elsif event["event"] == "dropped".freeze
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process_bounce(message_id, SiteSetting.hard_bounce_score)
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end
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end
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render nothing: true, status: 200
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end
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def mailjet
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events = params["_json"] || [params]
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events.each do |event|
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message_id = event["CustomID"]
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if event["event"] == "bounce".freeze
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if event["hard_bounce"]
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process_bounce(message_id, SiteSetting.hard_bounce_score)
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else
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process_bounce(message_id, SiteSetting.soft_bounce_score)
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end
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end
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end
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render nothing: true, status: 200
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end
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def mandrill
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events = params["mandrill_events"]
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events.each do |event|
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message_id = event["msg"]["metadata"]["message_id"] rescue nil
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next unless message_id
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case event["event"]
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when "hard_bounce"
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process_bounce(message_id, SiteSetting.hard_bounce_score)
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when "soft_bounce"
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process_bounce(message_id, SiteSetting.soft_bounce_score)
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end
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end
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render nothing: true, status: 200
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end
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private
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def mailgun_failure
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render nothing: true, status: 406
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end
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def mailgun_success
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render nothing: true, status: 200
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end
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def mailgun_verify(timestamp, token, signature)
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digest = OpenSSL::Digest::SHA256.new
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data = "#{timestamp}#{token}"
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signature == OpenSSL::HMAC.hexdigest(digest, SiteSetting.mailgun_api_key, data)
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end
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def process_bounce(message_id, bounce_score)
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return if message_id.blank?
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email_log = EmailLog.find_by(message_id: message_id)
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return if email_log.nil?
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email_log.update_columns(bounced: true)
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Email::Receiver.update_bounce_score(email_log.user.email, bounce_score)
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end
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end
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