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=begin
Feed2Imap - RSS/Atom Aggregator uploading to an IMAP Server
Copyright (c) 2005 Lucas Nussbaum <lucas@lucas-nussbaum.net>
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
=end
# Imap connection handling
require 'net/imap'
begin
require 'openssl'
rescue LoadError
end
require 'uri'
# This class is a container of IMAP accounts.
# Thanks to it, accounts are re-used : several feeds
# using the same IMAP account will create only one
# IMAP connection.
class ImapAccounts < Hash
def add_account(uri)
u = URI::Generic::build({ :scheme => uri.scheme,
:userinfo => uri.userinfo,
:host => uri.host,
:port => uri.port })
if not include?(u)
ac = ImapAccount::new(u)
self[u] = ac
end
return self[u]
end
end
# This class is an IMAP account, with the given fd
# once the connection has been established
class ImapAccount
attr_reader :uri
@@no_ssl_verify = false
def ImapAccount::no_ssl_verify=(v)
@@no_ssl_verify = v
end
def initialize(uri)
@uri = uri
@existing_folders = []
self
end
# connects to the IMAP server
# raises an exception if it fails
def connect
port = 143
usessl = false
if uri.scheme == 'imap'
port = 143
usessl = false
elsif uri.scheme == 'imaps'
port = 993
usessl = true
else
raise "Unknown scheme: #{uri.scheme}"
end
# use given port if port given
port = uri.port if uri.port
@connection = Net::IMAP::new(uri.host, port, usessl, nil, !@@no_ssl_verify)
user, password = URI::unescape(uri.userinfo).split(':',2)
@connection.login(user, password)
self
end
# disconnect from the IMAP server
def disconnect
if @connection
@connection.logout
@connection.disconnect
end
end
# tests if the folder exists and create it if not
def create_folder_if_not_exists(folder)
return if @existing_folders.include?(folder)
if @connection.list('', folder).nil?
@connection.create(folder)
@connection.subscribe(folder)
end
@existing_folders << folder
end
# Put the mail in the given folder
# You should check whether the folder exist first.
def putmail(folder, mail, date = Time::now)
create_folder_if_not_exists(folder)
@connection.append(folder, mail.gsub(/\n/, "\r\n"), nil, date)
end
# update a mail
def updatemail(folder, mail, id, date = Time::now, reupload_if_updated = true)
create_folder_if_not_exists(folder)
@connection.select(folder)
searchres = @connection.search(['HEADER', 'Message-Id', id])
flags = nil
if searchres.length > 0
# we get the flags from the first result and delete everything
flags = @connection.fetch(searchres[0], 'FLAGS')[0].attr['FLAGS']
searchres.each { |m| @connection.store(m, "+FLAGS", [:Deleted]) }
@connection.expunge
flags -= [ :Recent ] # avoids errors with dovecot
elsif not reupload_if_updated
# mail not present, and we don't want to re-upload it
return
end
@connection.append(folder, mail.gsub(/\n/, "\r\n"), flags, date)
end
# convert to string
def to_s
u2 = uri.clone
u2.password = 'PASSWORD'
u2.to_s
end
# remove mails in a folder according to a criteria
def cleanup(folder, dryrun = false)
puts "-- Considering #{folder}:"
@connection.select(folder)
a = ['SEEN', 'NOT', 'FLAGGED', 'BEFORE', (Date::today - 3).strftime('%d-%b-%Y')]
todel = @connection.search(a)
todel.each do |m|
f = @connection.fetch(m, "FULL")
d = f[0].attr['INTERNALDATE']
s = f[0].attr['ENVELOPE'].subject
if s =~ /^=\?utf-8\?b\?/
s = Base64::decode64(s.gsub(/^=\?utf-8\?b\?(.*)\?=$/, '\1')).force_encoding('utf-8')
elsif s =~ /^=\?iso-8859-1\?b\?/
s = Base64::decode64(s.gsub(/^=\?iso-8859-1\?b\?(.*)\?=$/, '\1')).force_encoding('iso-8859-1').encode('utf-8')
end
if dryrun
puts "To remove: #{s} (#{d})"
else
puts "Removing: #{s} (#{d})"
@connection.store(m, "+FLAGS", [:Deleted])
end
end
puts "-- Deleted #{todel.length} messages."
if not dryrun
@connection.expunge
end
return todel.length
end
end
|
