76 lines
1.9 KiB
Plaintext
76 lines
1.9 KiB
Plaintext
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#!/usr/bin/env ruby
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ENV_FILE = "/etc/postfix/mail-receiver-environment.json"
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EX_TEMPFAIL = 75
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EX_SUCCESS = 0
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require 'syslog'
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require 'json'
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require "uri"
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require "net/http"
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def logger
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@logger ||= Syslog.open("receive-mail", Syslog::LOG_PID, Syslog::LOG_MAIL)
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end
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def fatal(*args)
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logger.crit *args
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exit EX_TEMPFAIL
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end
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def main
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unless File.exists?(ENV_FILE)
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fatal "Config file %s does not exist. Aborting.", ENV_FILE
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end
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real_env = JSON.parse(File.read(ENV_FILE))
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%w{DISCOURSE_BASE_URL DISCOURSE_API_KEY DISCOURSE_API_USERNAME}.each do |kw|
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fatal "env var %s is required", kw unless real_env[kw]
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end
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recipient = ARGV.first
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mail = $stdin.read
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logger.debug "Recipient: #{recipient}"
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fatal "No recipient passed on command line." unless recipient
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fatal "No message passed on stdin." if mail.nil? || mail.empty?
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post_email(recipient, mail, real_env)
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rescue StandardError => ex
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logger.err "Unexpected error while invoking mail processor: %s (%s)", ex.message, ex.class
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logger.err ex.backtrace.map { |l| " #{l}" }.join("\n")
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exit EX_TEMPFAIL
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end
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def post_email(_recipient, mail, env)
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endpoint = "#{env['DISCOURSE_BASE_URL']}/admin/email/handle_mail"
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key = env["DISCOURSE_API_KEY"]
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username = env["DISCOURSE_API_USERNAME"]
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uri = URI.parse(endpoint)
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begin
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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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post = Net::HTTP::Post.new(uri.request_uri,"api-key" => "#{key}", "api-username" => "#{username}")
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post.set_form_data(email: mail)
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response = http.request(post)
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rescue StandardError => ex
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logger.err "Failed to POST the e-mail to %s: %s (%s)", endpoint, ex.message, ex.class
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logger.err ex.backtrace.map { |l| " #{l}" }.join("\n")
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exit EX_TEMPFAIL
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ensure
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http.finish if http && http.started?
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end
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exit EX_SUCCESS if Net::HTTPSuccess === response
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logger.err "Failed to POST the e-mail to %s: %s", endpoint, response.code
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exit EX_TEMPFAIL
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end
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main if __FILE__ == $0
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