discourse/app/jobs/scheduled/poll_mailbox.rb

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#
# Connects to a mailbox and checks for replies
#
require 'net/pop'
require_dependency 'email/receiver'
require_dependency 'email/sender'
require_dependency 'email/message_builder'
module Jobs
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class PollMailbox < Jobs::Scheduled
every SiteSetting.pop3s_polling_period_mins.minutes
sidekiq_options retry: false
include Email::BuildEmailHelper
def execute(args)
@args = args
if SiteSetting.pop3s_polling_enabled?
poll_pop3s
end
end
def handle_mail(mail)
begin
mail_string = mail.pop
Email::Receiver.new(mail_string).process
rescue => e
handle_failure(mail_string, e)
ensure
mail.delete
end
end
def handle_failure(mail_string, e)
template_args = {}
case e
when Email::Receiver::UserNotSufficientTrustLevelError
message_template = :email_reject_trust_level
when Email::Receiver::UserNotFoundError
message_template = :email_reject_no_account
when Email::Receiver::EmptyEmailError
message_template = :email_reject_empty
when Email::Receiver::EmailUnparsableError
message_template = :email_reject_parsing
when Email::Receiver::EmailLogNotFound
message_template = :email_reject_reply_key
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when Email::Receiver::BadDestinationAddress
message_template = :email_reject_destination
when ActiveRecord::Rollback
message_template = :email_reject_post_error
when Email::Receiver::InvalidPost
if e.message.length < 6
message_template = :email_reject_post_error
else
message_template = :email_reject_post_error_specified
template_args[:post_error] = e.message
end
else
message_template = nil
end
if message_template
# inform the user about the rejection
message = Mail::Message.new(mail_string)
template_args[:former_title] = message.subject
template_args[:destination] = message.to
client_message = RejectionMailer.send_rejection(message_template, message.from, template_args)
Email::Sender.new(client_message, message_template).send
else
Discourse.handle_exception(e, error_context(@args, "Unrecognized error type when processing incoming email", mail: mail_string))
end
end
def poll_pop3s
if !SiteSetting.pop3s_polling_insecure
Net::POP3.enable_ssl(OpenSSL::SSL::VERIFY_NONE)
end
Net::POP3.start(SiteSetting.pop3s_polling_host,
SiteSetting.pop3s_polling_port,
SiteSetting.pop3s_polling_username,
SiteSetting.pop3s_polling_password) do |pop|
unless pop.mails.empty?
pop.each do |mail|
handle_mail(mail)
end
end
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pop.finish
end
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rescue Net::POPAuthenticationError => e
Discourse.handle_exception(e, error_context(@args, "Signing in to poll incoming email"))
end
end
end