summaryrefslogtreecommitdiff
path: root/lib/feed2imap/feed2imap.rb
blob: daee87db70f593b2ca1799d61b9166abb7c009f9 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
#!/usr/bin/ruby

=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

require 'feed2imap/config'
require 'feed2imap/cache'
require 'feed2imap/channel'
require 'feed2imap/httpfetcher'
require 'logger'
require 'thread'

# Feed2Imap version
F2I_VERSION = '0.2'

class Feed2Imap
  def initialize(verbose, cacherebuild, configfile)
    @logger = Logger::new(STDOUT)
    if verbose
      @logger.level = Logger::DEBUG
    else
      @logger.level = Logger::WARN
    end
    @logger.info("Feed2Imap V.#{F2I_VERSION} started")
    # reading config
    @logger.info('Reading configuration file')
    if not File::exist?(configfile)
      @logger.fatal("Configuration file #{configfile} not found.")
      exit(1)
    end
    begin
      File::open(configfile) { 
        |f| @config = F2IConfig::new(f)
      }
    rescue
      @logger.fatal("Error while reading configuration file, exiting: #{$!}")
      exit(1)
    end
    # init cache
    @logger.info('Initializing cache')
    @cache = ItemCache::new
    if not File::exist?(@config.cache) 
      @logger.warn("Cache file #{@config.cache} not found, using a new one")
    else
      File::open(@config.cache) { |f| @cache.load(f) }
    end
    # connecting all IMAP accounts
    @logger.info('Connecting to IMAP accounts')
    @config.imap_accounts.each_value do |ac|
      begin
        ac.connect
      rescue
        @logger.fatal("Error while connecting to #{ac}, exiting: #{$!}")
        exit(1)
      end
    end
    # check that IMAP folders exist
    @logger.info("Checking IMAP folders")
    @config.feeds.each do |f|
      begin
        f.imapaccount.create_folder(f.folder) if not f.imapaccount.folder_exist?(f.folder)
      rescue
        @logger.fatal("Error while creating IMAP folder #{f.folder}: #{$!}")
        exit(1)
      end
    end
    # for each feed, fetch, upload to IMAP and cache
    @logger.info("Fetching feeds")
    loggermon = Mutex::new
    ths = []
    @config.feeds.each do |f|
      ths << Thread::new do
        begin
          f.body = HTTPFetcher::fetch(f.url, @cache.get_last_check(f.name))
          # dump if requested
          if @config.dumpdir
            fname = @config.dumpdir + '/' + f.name + '-' + Time::now.xmlschema
            File::open(fname, 'w') { |file| file.puts f.body }
          end
        rescue Timeout::Error
          loggermon.synchronize do
            @logger.fatal("Timeout::Error while fetching #{f.url}: #{$!}")
          end
        rescue
          loggermon.synchronize do
            @logger.fatal("Error while fetching #{f.url}: #{$!}")
          end
        end
      end
    end
    ths.each { |t| t.join }
    @logger.info("Parsing and uploading")
    @config.feeds.each do |f|
      next if f.body.nil? # means 304
      begin
        channel = Channel::new(f.body)
      rescue
        @logger.fatal("Error while parsing #{f.name}: #{$!}")
        next
      end
      begin
        newitems, updateditems = @cache.get_new_items(f.name, channel.items)
      rescue
        @logger.fatal("Exception caught when selecting new items for #{f.name}: #{$!}")
        puts $!.backtrace
        next
      end
      @logger.info("#{f.name}: #{newitems.length} new items, #{updateditems.length} updated items.") if newitems.length > 0 or updateditems.length > 0
      begin
        if !cacherebuild
          updateditems.each { |i| f.imapaccount.updatemail(f.folder, i.to_mail(f.name), i.cacheditem.index) }
          newitems.each { |i| f.imapaccount.putmail(f.folder, i.to_mail(f.name)) }
        end
      rescue
        @logger.fatal("Exception caught while uploading mail to #{f.folder}: #{$!}")
        puts $!.backtrace
        next
      end
      begin
        @cache.update_cache(f.name, channel.items)
      rescue
        @logger.fatal("Exception caught while updating cache for #{f.name}: #{$!}")
        next
      end
    end
    @logger.info("Finished. Saving cache")
    begin
      File::open(@config.cache, 'w') { |f| @cache.save(f) }
    rescue
      @logger.fatal("Exception caught while writing cache to #{@config.cache}: #{$!}")
    end
    @logger.info("Closing IMAP connections")
    begin
      @config.imap_accounts.each_value { |ac| ac.disconnect }
    rescue
      @logger.fatal("Exception caught while closing connection to #{ac.to_s}: #{$!}")
    end
  end
end