150 lines
3.4 KiB
Ruby
Executable file
150 lines
3.4 KiB
Ruby
Executable file
#!/usr/bin/env ruby
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#
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# postfix main.cf:
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# relay_domains = lobste.rs
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# transport_maps = hash:/etc/postfix/transport
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# defer_transports =
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#
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# postfix transports:
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# lobste.rs lobsters:
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#
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# postfix master.cf:
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# lobsters unix - n n - 2 pipe
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# flags=Fqhu user=lobsters size=1024000 argv=/d/rails/lobsters/script/parse_inbound_mail ${recipient} ${sender}
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ENV["RAILS_ENV"] ||= "production"
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APP_PATH = File.expand_path('../../config/application', __FILE__)
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require File.expand_path('../../config/boot', __FILE__)
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require APP_PATH
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Rails.application.require_environment!
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# postfix exit codes
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EX_NOUSER = 67
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EX_TEMPFAIL = 75
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EX_UNAVAILABLE = 69
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recipient = ARGV[0]
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user_token = recipient.gsub(/^lobsters-/, "").gsub(/@.*/, "")
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sender = ARGV[1]
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message = ""
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email = nil
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while !STDIN.eof?
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message += STDIN.gets.to_s
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end
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if message.match(/^X-BeenThere: lobsters-/i)
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# avoid looping
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exit
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end
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sending_user = User.where(:mailing_list_enabled => true,
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:mailing_list_token => user_token).first
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if !sending_user
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STDERR.puts "no user with mailing list token #{user_token}"
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# if this looks like a user token but invalid, generate a bounce to be
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# helpful. otherwise supress it to avoid talking back to spammers
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exit(recipient.match(/^lobsters-/) ? EX_NOUSER : 0)
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end
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# the mail gem stupidly spams STDERR while parsing e-mail, so silence that
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# stream to avoid anything getting back to postfix
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begin
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Utils.silence_stream(STDERR) do
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email = Mail.read_from_string(message)
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end
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if !email
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raise
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end
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rescue
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STDERR.puts "error parsing e-mail"
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exit EX_UNAVAILABLE
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end
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# figure out what this reply is to
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irt = email[:in_reply_to].to_s.gsub(/[^A-Za-z0-9@\.]/, "")
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if m = irt.match(/^comment\.([^\.]+)\.\d+@/)
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parent = Comment.find_by_short_id(m[1])
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elsif m = irt.match(/^story\.([^\.]+)\.\d+@/)
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parent = Story.find_by_short_id(m[1])
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end
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if !parent
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STDERR.puts "no valid comment or story being replied to"
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exit EX_NOUSER
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end
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body = nil
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possible_charset = nil
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if email.multipart?
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# parts[0] - multipart/alternative
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# parts[0].parts[0] - text/plain
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# parts[0].parts[1] - text/html
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if (p = email.parts.first.parts.select{|p|
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p.content_type.match(/text\/plain/) }).any?
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begin
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possible_charset = p.first.content_type_parameters["charset"]
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rescue
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end
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# parts[0] - text/plain
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elsif (p = email.parts.select{|p|
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p.content_type.match(/text\/plain/) }).any?
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body = p.first.body.to_s
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begin
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possible_charset = p.first.content_type_parameters["charset"]
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rescue
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end
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end
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elsif email.content_type.to_s.match(/text\/plain/)
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body = email.body.to_s
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begin
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possible_charset = email.content_type_parameters["charset"]
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rescue
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end
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elsif !email.content_type.to_s.present?
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# no content-type header, assume it's text/plain
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body = email.body.to_s
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end
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if !body.present?
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# oh well
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STDERR.puts "no valid text/plain body found"
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exit EX_UNAVAILABLE
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end
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# try to remove sig lines
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body.gsub!(/^-- \n.+\z/, "")
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# TODO: try to strip out attribution line, followed by an optional blank line,
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# and then lines prefixed with >
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body.strip!
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c = Comment.new
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c.user_id = sending_user.id
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c.comment = body
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if parent.is_a?(Comment)
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c.story_id = parent.story_id
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c.parent_comment_id = parent.id
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else
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c.story_id = parent.id
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end
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if c.save
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exit
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else
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STDERR.puts c.errors.inspect
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exit EX_UNAVAILABLE
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end
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