Sendgrid: prepend X-Original-To header with envelope recipients
Sendgrid, like Mailgun, only passes BCC recipients as a parameter in the original JSON payload. This PR adds code to prepend the recipients from the Sendgrid payload to the raw_email under the X-Original-To header. References #38738.
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@ -1,3 +1,7 @@
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* Sendgrid ingress now passes through the envelope recipient as `X-Original-To`.
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*Mark Haussmann*
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* Update Mandrill inbound email route to respond appropriately to HEAD requests for URL health checks from Mandrill.
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*Bill Cromie*
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@ -48,7 +48,21 @@ class Ingresses::Sendgrid::InboundEmailsController < ActionMailbox::BaseControll
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before_action :authenticate_by_password
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def create
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ActionMailbox::InboundEmail.create_and_extract_message_id! params.require(:email)
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ActionMailbox::InboundEmail.create_and_extract_message_id! mail
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rescue JSON::ParserError => error
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logger.error error.message
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head :unprocessable_entity
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end
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private
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def mail
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params.require(:email).tap do |raw_email|
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envelope["to"].each { |to| raw_email.prepend("X-Original-To: ", to, "\n") } if params.key?(:envelope)
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end
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end
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def envelope
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JSON.parse(params.require(:envelope))
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end
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end
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end
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@ -18,6 +18,22 @@ class ActionMailbox::Ingresses::Sendgrid::InboundEmailsControllerTest < ActionDi
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assert_equal "0CB459E0-0336-41DA-BC88-E6E28C697DDB@37signals.com", inbound_email.message_id
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end
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test "add X-Original-To to email from Sendgrid" do
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assert_difference -> { ActionMailbox::InboundEmail.count }, +1 do
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post rails_sendgrid_inbound_emails_url,
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headers: { authorization: credentials }, params: {
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email: file_fixture("../files/welcome.eml").read,
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envelope: "{\"to\":[\"replies@example.com\"],\"from\":\"jason@37signals.com\"}",
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}
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end
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assert_response :no_content
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inbound_email = ActionMailbox::InboundEmail.last
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mail = Mail.from_source(inbound_email.raw_email.download)
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assert_equal "replies@example.com", mail.header["X-Original-To"].decoded
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end
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test "rejecting an unauthorized inbound email from Sendgrid" do
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assert_no_difference -> { ActionMailbox::InboundEmail.count } do
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post rails_sendgrid_inbound_emails_url, params: { email: file_fixture("../files/welcome.eml").read }
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