aboutsummaryrefslogtreecommitdiffstats
path: root/actionmailer/lib/action_mailer/vendor/tmail/header.rb
blob: be97803def6e3df1eed3b427e8c11d803cb36666 (plain) (blame)
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
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
#
# header.rb
#
#--
# Copyright (c) 1998-2003 Minero Aoki <aamine@loveruby.net>
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#
# Note: Originally licensed under LGPL v2+. Using MIT license for Rails
# with permission of Minero Aoki.
#++

require 'tmail/encode'
require 'tmail/address'
require 'tmail/parser'
require 'tmail/config'
require 'tmail/utils'


module TMail

  class HeaderField

    include TextUtils

    class << self

      alias newobj new

      def new( name, body, conf = DEFAULT_CONFIG )
        klass = FNAME_TO_CLASS[name.downcase] || UnstructuredHeader
        klass.newobj body, conf
      end

      def new_from_port( port, name, conf = DEFAULT_CONFIG )
        re = Regep.new('\A(' + Regexp.quote(name) + '):', 'i')
        str = nil
        port.ropen {|f|
            f.each do |line|
              if m = re.match(line)            then str = m.post_match.strip
              elsif str and /\A[\t ]/ === line then str << ' ' << line.strip
              elsif /\A-*\s*\z/ === line       then break
              elsif str                        then break
              end
            end
        }
        new(name, str, Config.to_config(conf))
      end

      def internal_new( name, conf )
        FNAME_TO_CLASS[name].newobj('', conf, true)
      end

    end   # class << self

    def initialize( body, conf, intern = false )
      @body = body
      @config = conf

      @illegal = false
      @parsed = false
      if intern
        @parsed = true
        parse_init
      end
    end

    def inspect
      "#<#{self.class} #{@body.inspect}>"
    end

    def illegal?
      @illegal
    end

    def empty?
      ensure_parsed
      return true if @illegal
      isempty?
    end

    private

    def ensure_parsed
      return if @parsed
      @parsed = true
      parse
    end

    # defabstract parse
    # end

    def clear_parse_status
      @parsed = false
      @illegal = false
    end

    public

    def body
      ensure_parsed
      v = Decoder.new(s = '')
      do_accept v
      v.terminate
      s
    end

    def body=( str )
      @body = str
      clear_parse_status
    end

    include StrategyInterface

    def accept( strategy, dummy1 = nil, dummy2 = nil )
      ensure_parsed
      do_accept strategy
      strategy.terminate
    end

    # abstract do_accept

  end


  class UnstructuredHeader < HeaderField

    def body
      ensure_parsed
      @body
    end

    def body=( arg )
      ensure_parsed
      @body = arg
    end

    private

    def parse_init
    end

    def parse
      @body = Decoder.decode(@body.gsub(/\n|\r\n|\r/, ''))
    end

    def isempty?
      not @body
    end

    def do_accept( strategy )
      strategy.text @body
    end

  end


  class StructuredHeader < HeaderField

    def comments
      ensure_parsed
      @comments
    end

    private

    def parse
      save = nil

      begin
        parse_init
        do_parse
      rescue SyntaxError
        if not save and mime_encoded? @body
          save = @body
          @body = Decoder.decode(save)
          retry
        elsif save
          @body = save
        end

        @illegal = true
        raise if @config.strict_parse?
      end
    end

    def parse_init
      @comments = []
      init
    end

    def do_parse
      obj = Parser.parse(self.class::PARSE_TYPE, @body, @comments)
      set obj if obj
    end

  end


  class DateTimeHeader < StructuredHeader

    PARSE_TYPE = :DATETIME

    def date
      ensure_parsed
      @date
    end

    def date=( arg )
      ensure_parsed
      @date = arg
    end

    private

    def init
      @date = nil
    end

    def set( t )
      @date = t
    end

    def isempty?
      not @date
    end

    def do_accept( strategy )
      strategy.meta time2str(@date)
    end

  end


  class AddressHeader < StructuredHeader

    PARSE_TYPE = :MADDRESS

    def addrs
      ensure_parsed
      @addrs
    end

    private

    def init
      @addrs = []
    end

    def set( a )
      @addrs = a
    end

    def isempty?
      @addrs.empty?
    end

    def do_accept( strategy )
      first = true
      @addrs.each do |a|
        if first
          first = false
        else
          strategy.meta ','
          strategy.space
        end
        a.accept strategy
      end

      @comments.each do |c|
        strategy.space
        strategy.meta '('
        strategy.text c
        strategy.meta ')'
      end
    end

  end


  class ReturnPathHeader < AddressHeader

    PARSE_TYPE = :RETPATH

    def addr
      addrs()[0]
    end

    def spec
      a = addr() or return nil
      a.spec
    end

    def routes
      a = addr() or return nil
      a.routes
    end

    private

    def do_accept( strategy )
      a = addr()

      strategy.meta '<'
      unless a.routes.empty?
        strategy.meta a.routes.map {|i| '@' + i }.join(',')
        strategy.meta ':'
      end
      spec = a.spec
      strategy.meta spec if spec
      strategy.meta '>'
    end

  end


  class SingleAddressHeader < AddressHeader

    def addr
      addrs()[0]
    end

    private

    def do_accept( strategy )
      a = addr()
      a.accept strategy
      @comments.each do |c|
        strategy.space
        strategy.meta '('
        strategy.text c
        strategy.meta ')'
      end
    end

  end


  class MessageIdHeader < StructuredHeader

    def id
      ensure_parsed
      @id
    end

    def id=( arg )
      ensure_parsed
      @id = arg
    end

    private

    def init
      @id = nil
    end

    def isempty?
      not @id
    end

    def do_parse
      @id = @body.slice(MESSAGE_ID) or
              raise SyntaxError, "wrong Message-ID format: #{@body}"
    end

    def do_accept( strategy )
      strategy.meta @id
    end

  end


  class ReferencesHeader < StructuredHeader

    def refs
      ensure_parsed
      @refs
    end

    def each_id
      self.refs.each do |i|
        yield i if MESSAGE_ID === i
      end
    end

    def ids
      ensure_parsed
      @ids
    end

    def each_phrase
      self.refs.each do |i|
        yield i unless MESSAGE_ID === i
      end
    end

    def phrases
      ret = []
      each_phrase {|i| ret.push i }
      ret
    end

    private

    def init
      @refs = []
      @ids = []
    end

    def isempty?
      @ids.empty?
    end

    def do_parse
      str = @body
      while m = MESSAGE_ID.match(str)
        pre = m.pre_match.strip
        @refs.push pre unless pre.empty?
        @refs.push s = m[0]
        @ids.push s
        str = m.post_match
      end
      str = str.strip
      @refs.push str unless str.empty?
    end

    def do_accept( strategy )
      first = true
      @ids.each do |i|
        if first
          first = false
        else
          strategy.space
        end
        strategy.meta i
      end
    end

  end


  class ReceivedHeader < StructuredHeader

    PARSE_TYPE = :RECEIVED

    def from
      ensure_parsed
      @from
    end

    def from=( arg )
      ensure_parsed
      @from = arg
    end

    def by
      ensure_parsed
      @by
    end

    def by=( arg )
      ensure_parsed
      @by = arg
    end

    def via
      ensure_parsed
      @via
    end

    def via=( arg )
      ensure_parsed
      @via = arg
    end

    def with
      ensure_parsed
      @with
    end

    def id
      ensure_parsed
      @id
    end

    def id=( arg )
      ensure_parsed
      @id = arg
    end

    def _for
      ensure_parsed
      @_for
    end

    def _for=( arg )
      ensure_parsed
      @_for = arg
    end

    def date
      ensure_parsed
      @date
    end

    def date=( arg )
      ensure_parsed
      @date = arg
    end

    private

    def init
      @from = @by = @via = @with = @id = @_for = nil
      @with = []
      @date = nil
    end

    def set( args )
      @from, @by, @via, @with, @id, @_for, @date = *args
    end

    def isempty?
      @with.empty? and not (@from or @by or @via or @id or @_for or @date)
    end

    def do_accept( strategy )
      list = []
      list.push 'from '  + @from       if @from
      list.push 'by '    + @by         if @by
      list.push 'via '   + @via        if @via
      @with.each do |i|
        list.push 'with ' + i
      end
      list.push 'id '    + @id         if @id
      list.push 'for <'  + @_for + '>' if @_for

      first = true
      list.each do |i|
        strategy.space unless first
        strategy.meta i
        first = false
      end
      if @date
        strategy.meta ';'
        strategy.space
        strategy.meta time2str(@date)
      end
    end

  end


  class KeywordsHeader < StructuredHeader

    PARSE_TYPE = :KEYWORDS

    def keys
      ensure_parsed
      @keys
    end

    private

    def init
      @keys = []
    end

    def set( a )
      @keys = a
    end

    def isempty?
      @keys.empty?
    end

    def do_accept( strategy )
      first = true
      @keys.each do |i|
        if first
          first = false
        else
          strategy.meta ','
        end
        strategy.meta i
      end
    end

  end


  class EncryptedHeader < StructuredHeader

    PARSE_TYPE = :ENCRYPTED

    def encrypter
      ensure_parsed
      @encrypter
    end

    def encrypter=( arg )
      ensure_parsed
      @encrypter = arg
    end

    def keyword
      ensure_parsed
      @keyword
    end

    def keyword=( arg )
      ensure_parsed
      @keyword = arg
    end

    private

    def init
      @encrypter = nil
      @keyword = nil
    end

    def set( args )
      @encrypter, @keyword = args
    end

    def isempty?
      not (@encrypter or @keyword)
    end

    def do_accept( strategy )
      if @key
        strategy.meta @encrypter + ','
        strategy.space
        strategy.meta @keyword
      else
        strategy.meta @encrypter
      end
    end

  end


  class MimeVersionHeader < StructuredHeader

    PARSE_TYPE = :MIMEVERSION

    def major
      ensure_parsed
      @major
    end

    def major=( arg )
      ensure_parsed
      @major = arg
    end

    def minor
      ensure_parsed
      @minor
    end

    def minor=( arg )
      ensure_parsed
      @minor = arg
    end

    def version
      sprintf('%d.%d', major, minor)
    end

    private

    def init
      @major = nil
      @minor = nil
    end

    def set( args )
      @major, @minor = *args
    end

    def isempty?
      not (@major or @minor)
    end

    def do_accept( strategy )
      strategy.meta sprintf('%d.%d', @major, @minor)
    end

  end


  class ContentTypeHeader < StructuredHeader

    PARSE_TYPE = :CTYPE

    def main_type
      ensure_parsed
      @main
    end

    def main_type=( arg )
      ensure_parsed
      @main = arg.downcase
    end

    def sub_type
      ensure_parsed
      @sub
    end

    def sub_type=( arg )
      ensure_parsed
      @sub = arg.downcase
    end

    def content_type
      ensure_parsed
      @sub ? sprintf('%s/%s', @main, @sub) : @main
    end

    def params
      ensure_parsed
      @params
    end

    def []( key )
      ensure_parsed
      @params and @params[key]
    end

    def []=( key, val )
      ensure_parsed
      (@params ||= {})[key] = val
    end

    private

    def init
      @main = @sub = @params = nil
    end

    def set( args )
      @main, @sub, @params = *args
    end

    def isempty?
      not (@main or @sub)
    end

    def do_accept( strategy )
      if @sub
        strategy.meta sprintf('%s/%s', @main, @sub)
      else
        strategy.meta @main
      end
      @params.each do |k,v|
        if v
          strategy.meta ';'
          strategy.space
          strategy.kv_pair k, v
        end
      end
    end

  end


  class ContentTransferEncodingHeader < StructuredHeader

    PARSE_TYPE = :CENCODING

    def encoding
      ensure_parsed
      @encoding
    end

    def encoding=( arg )
      ensure_parsed
      @encoding = arg
    end

    private

    def init
      @encoding = nil
    end

    def set( s )
      @encoding = s
    end

    def isempty?
      not @encoding
    end

    def do_accept( strategy )
      strategy.meta @encoding.capitalize
    end

  end


  class ContentDispositionHeader < StructuredHeader

    PARSE_TYPE = :CDISPOSITION

    def disposition
      ensure_parsed
      @disposition
    end

    def disposition=( str )
      ensure_parsed
      @disposition = str.downcase
    end

    def params
      ensure_parsed
      @params
    end

    def []( key )
      ensure_parsed
      @params and @params[key]
    end

    def []=( key, val )
      ensure_parsed
      (@params ||= {})[key] = val
    end

    private

    def init
      @disposition = @params = nil
    end

    def set( args )
      @disposition, @params = *args
    end

    def isempty?
      not @disposition and (not @params or @params.empty?)
    end

    def do_accept( strategy )
      strategy.meta @disposition
      @params.each do |k,v|
        strategy.meta ';'
        strategy.space
        strategy.kv_pair k, v
      end
    end
      
  end


  class HeaderField   # redefine

    FNAME_TO_CLASS = {
      'date'                      => DateTimeHeader,
      'resent-date'               => DateTimeHeader,
      'to'                        => AddressHeader,
      'cc'                        => AddressHeader,
      'bcc'                       => AddressHeader,
      'from'                      => AddressHeader,
      'reply-to'                  => AddressHeader,
      'resent-to'                 => AddressHeader,
      'resent-cc'                 => AddressHeader,
      'resent-bcc'                => AddressHeader,
      'resent-from'               => AddressHeader,
      'resent-reply-to'           => AddressHeader,
      'sender'                    => SingleAddressHeader,
      'resent-sender'             => SingleAddressHeader,
      'return-path'               => ReturnPathHeader,
      'message-id'                => MessageIdHeader,
      'resent-message-id'         => MessageIdHeader,
      'in-reply-to'               => ReferencesHeader,
      'received'                  => ReceivedHeader,
      'references'                => ReferencesHeader,
      'keywords'                  => KeywordsHeader,
      'encrypted'                 => EncryptedHeader,
      'mime-version'              => MimeVersionHeader,
      'content-type'              => ContentTypeHeader,
      'content-transfer-encoding' => ContentTransferEncodingHeader,
      'content-disposition'       => ContentDispositionHeader,
      'content-id'                => MessageIdHeader,
      'subject'                   => UnstructuredHeader,
      'comments'                  => UnstructuredHeader,
      'content-description'       => UnstructuredHeader
    }

  end

end   # module TMail