Adds a rake task to receive emails from a POP3 server (#2420).

See:

  rake -D redmine:email:receive_pop3

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@3330 e93f8b46-1217-0410-a6f0-8f06a7374b81

lib/redmine/pop3.rb

+# Redmine - project management software
+# Copyright (C) 2006-2010  Jean-Philippe Lang
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+
+require 'net/pop'
+
+module Redmine
+  module POP3
+    class << self
+      def check(pop_options={}, options={})
+        host = pop_options[:host] || '127.0.0.1'
+        port = pop_options[:port] || '110'
+        apop = (pop_options[:apop].to_s == '1')
+        delete_unprocessed = (pop_options[:delete_unprocessed].to_s == '1')
+
+        pop = Net::POP3.APOP(apop).new(host,port)
+        puts "Connecting to #{host}..."
+        pop.start(pop_options[:username], pop_options[:password]) do |pop_session|
+          if pop_session.mails.empty?
+            puts "No email to process"
+          else
+            puts "#{pop_session.mails.size} email(s) to process..."
+            pop_session.each_mail do |msg|
+              message = msg.pop
+              message_id = (message =~ /^Message-ID: (.*)/ ? $1 : '').strip
+              if MailHandler.receive(message, options)
+                msg.delete
+                puts "--> Message #{message_id} processed and deleted from the server"
+              else
+                if delete_unprocessed
+                  msg.delete
+                  puts "--> Message #{message_id} NOT processed and deleted from the server"
+                else
+                  puts "--> Message #{message_id} NOT processed and left on the server"
+                end
+              end
+            end
+          end
+        end
+      end
+    end
+  end
+end

lib/tasks/email.rake

@@ -132,5 +132,38 @@ END_DESC
 
       Redmine::IMAP.check(imap_options, options)
     end
+    
+    desc <<-END_DESC
+Read emails from an POP3 server.
+
+Available POP3 options:
+  host=HOST                POP3 server host (default: 127.0.0.1)
+  port=PORT                POP3 server port (default: 110)
+  username=USERNAME        POP3 account
+  password=PASSWORD        POP3 password
+  apop=1                   use APOP authentication (default: false)
+  delete_unprocessed=1     delete messages that could not be processed
+                           successfully from the server (default
+                           behaviour is to leave them on the server)
+
+See redmine:email:receive_imap for more options and examples.
+END_DESC
+    
+    task :receive_pop3 => :environment do
+      pop_options  = {:host => ENV['host'],
+                      :port => ENV['port'],
+                      :apop => ENV['apop'],
+                      :username => ENV['username'],
+                      :password => ENV['password'],
+                      :delete_unprocessed => ENV['delete_unprocessed']}
+                      
+      options = { :issue => {} }
+      %w(project status tracker category priority).each { |a| options[:issue][a.to_sym] = ENV[a] if ENV[a] }
+      options[:allow_override] = ENV['allow_override'] if ENV['allow_override']
+      options[:unknown_user] = ENV['unknown_user'] if ENV['unknown_user']
+      options[:no_permission_check] = ENV['no_permission_check'] if ENV['no_permission_check']
+      
+      Redmine::POP3.check(pop_options, options)
+    end
   end
 end