aboutsummaryrefslogtreecommitdiffstats
path: root/test/rubygems/test_gem_remote_fetcher.rb
blob: 9a038c9dee55b801475c374e01558cbc0fb42b2f (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
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
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
# frozen_string_literal: true
require 'rubygems/test_case'

require 'webrick'
begin
  require 'webrick/https'
rescue LoadError => e
  raise unless (e.respond_to?(:path) && e.path == 'openssl') ||
               e.message =~ / -- openssl$/
end

require 'rubygems/remote_fetcher'
require 'rubygems/package'
require 'minitest/mock'

# = Testing Proxy Settings
#
# These tests check the proper proxy server settings by running two
# web servers.  The web server at http://localhost:#{SERVER_PORT}
# represents the normal gem server and returns a gemspec with a rake
# version of 0.4.11.  The web server at http://localhost:#{PROXY_PORT}
# represents the proxy server and returns a different dataset where
# rake has version 0.4.2.  This allows us to detect which server is
# returning the data.
#
# Note that the proxy server is not a *real* proxy server.  But our
# software doesn't really care, as long as we hit the proxy URL when a
# proxy is configured.

class TestGemRemoteFetcher < Gem::TestCase

  include Gem::DefaultUserInteraction

  SERVER_DATA = <<-EOY
--- !ruby/object:Gem::Cache
gems:
  rake-0.4.11: !ruby/object:Gem::Specification
    rubygems_version: "0.7"
    specification_version: 1
    name: rake
    version: !ruby/object:Gem::Version
      version: 0.4.11
    date: 2004-11-12
    summary: Ruby based make-like utility.
    require_paths:
      - lib
    author: Jim Weirich
    email: jim@weirichhouse.org
    homepage: http://rake.rubyforge.org
    rubyforge_project: rake
    description: Rake is a Make-like program implemented in Ruby. Tasks and dependencies are specified in standard Ruby syntax.
    autorequire:
    default_executable: rake
    bindir: bin
    has_rdoc: true
    required_ruby_version: !ruby/object:Gem::Version::Requirement
      requirements:
        -
          - ">"
          - !ruby/object:Gem::Version
            version: 0.0.0
      version:
    platform: ruby
    files:
      - README
    test_files: []
    library_stubs:
    rdoc_options:
    extra_rdoc_files:
    executables:
      - rake
    extensions: []
    requirements: []
    dependencies: []
  EOY

  PROXY_DATA = SERVER_DATA.gsub(/0.4.11/, '0.4.2')

  DIR = File.expand_path(File.dirname(__FILE__))

  # Generated via:
  #   x = OpenSSL::PKey::DH.new(2048) # wait a while...
  #   x.to_s => pem
  #   x.priv_key.to_s => decimal for OpenSSL::BN.new
  TEST_KEY_DH2048 =  OpenSSL::PKey::DH.new <<-_end_of_pem_
-----BEGIN DH PARAMETERS-----
MIIBCAKCAQEA3Ze2EHSfYkZLUn557torAmjBgPsqzbodaRaGZtgK1gEU+9nNJaFV
G1JKhmGUiEDyIW7idsBpe4sX/Wqjnp48Lr8IeI/SlEzLdoGpf05iRYXC8Cm9o8aM
cfmVgoSEAo9YLBpzoji2jHkO7Q5IPt4zxbTdlmmGFLc/GO9q7LGHhC+rcMcNTGsM
49AnILNn49pq4Y72jSwdmvq4psHZwwFBbPwLdw6bLUDDCN90jfqvYt18muwUxDiN
NP0fuvVAIB158VnQ0liHSwcl6+9vE1mL0Jo/qEXQxl0+UdKDjaGfTsn6HIrwTnmJ
PeIQQkFng2VVot/WAQbv3ePqWq07g1BBcwIBAg==
-----END DH PARAMETERS-----
    _end_of_pem_

  TEST_KEY_DH2048.set_key(
      OpenSSL::BN.new("10725438530785912156218967697008486801800244817009" \
        "1560208603512885352948501237094708563096797190598021598409520414" \
        "9734679558435654191042970781199870011330210579002380736073809014" \
        "9003016222954352601621379700744012563282153596945640946475452284" \
        "5568928065134812770589561436732785097011997990440853684692745849" \
        "5583055233008348615239821368608596014481686097025313576691697895" \
        "7670520880307788062241291816848808660778193886241424406910257704" \
        "1278266290939665417244744475608290477073133083865528901891161122" \
        "7747762224198087674326339318681433826268250155004079667295543246" \
        "700724220484073250324190133688110281228977257161791447", 10),
      OpenSSL::BN.new("10891148850973478134442363955857495022360890334161" \
        "6052403098700503754037947412344127355541683547256882383693527382" \
        "6659075737060393761849969866504775758899855534534462519785863725" \
        "2553021937540833109609822002741323847735996042837201954643933323" \
        "3816450435201553554949658579232028651356373930584339692943449740" \
        "2871306547295937619772819316227231451433588239955439466153063850" \
        "0343099122188677961287879344685168183539745533398926850374878624" \
        "8867917839871618920573744299615543219165608066409059650267494379" \
        "0248155715748579598032676611788276194145514058226534705293960472" \
        "4964857770053363840471912215799994973597613931991572884", 10))

  def setup
    @proxies = %w[https_proxy http_proxy HTTP_PROXY http_proxy_user HTTP_PROXY_USER http_proxy_pass HTTP_PROXY_PASS no_proxy NO_PROXY]
    @old_proxies = @proxies.map {|k| ENV[k] }
    @proxies.each {|k| ENV[k] = nil }

    super
    self.class.start_servers
    self.class.enable_yaml = true
    self.class.enable_zip = false

    base_server_uri = "http://localhost:#{self.class.normal_server_port}"
    @proxy_uri = "http://localhost:#{self.class.proxy_server_port}"

    @server_uri = base_server_uri + "/yaml"
    @server_z_uri = base_server_uri + "/yaml.Z"

    # REFACTOR: copied from test_gem_dependency_installer.rb
    @gems_dir = File.join @tempdir, 'gems'
    @cache_dir = File.join @gemhome, "cache"
    FileUtils.mkdir @gems_dir

    # TODO: why does the remote fetcher need it written to disk?
    @a1, @a1_gem = util_gem 'a', '1' do |s| s.executables << 'a_bin' end
    @a1.loaded_from = File.join(@gemhome, 'specifications', @a1.full_name)

    Gem::RemoteFetcher.fetcher = nil

    @fetcher = Gem::RemoteFetcher.fetcher
  end

  def teardown
    @fetcher.close_all
    self.class.stop_servers
    super
    Gem.configuration[:http_proxy] = nil
    @proxies.each_with_index {|k, i| ENV[k] = @old_proxies[i] }
  end

  def test_self_fetcher
    fetcher = Gem::RemoteFetcher.fetcher
    refute_nil fetcher
    assert_kind_of Gem::RemoteFetcher, fetcher
  end

  def test_self_fetcher_with_proxy
    proxy_uri = 'http://proxy.example.com'
    Gem.configuration[:http_proxy] = proxy_uri
    Gem::RemoteFetcher.fetcher = nil

    fetcher = Gem::RemoteFetcher.fetcher

    refute_nil fetcher
    assert_kind_of Gem::RemoteFetcher, fetcher
    assert_equal proxy_uri, fetcher.instance_variable_get(:@proxy).to_s
  end

  def test_fetch_size_bad_uri
    fetcher = Gem::RemoteFetcher.new nil
    @fetcher = fetcher

    e = assert_raises ArgumentError do
      fetcher.fetch_size 'gems.example.com/yaml'
    end

    assert_equal 'uri scheme is invalid: nil', e.message
  end

  def test_fetch_size_socket_error
    fetcher = Gem::RemoteFetcher.new nil
    @fetcher = fetcher
    def fetcher.request(uri, request_class, last_modified = nil)
      raise SocketError, "tarded"
    end

    uri = 'http://gems.example.com/yaml'
    e = assert_raises Gem::RemoteFetcher::FetchError do
      fetcher.fetch_size uri
    end

    assert_equal "SocketError: tarded (#{uri})", e.message
  end

  def test_no_proxy
    use_ui @ui do
      assert_data_from_server @fetcher.fetch_path(@server_uri)
      assert_equal SERVER_DATA.size, @fetcher.fetch_size(@server_uri)
    end
  end

  def test_api_endpoint
    uri = URI.parse "http://example.com/foo"
    target = MiniTest::Mock.new
    target.expect :target, "gems.example.com"

    dns = MiniTest::Mock.new
    dns.expect :getresource, target, [String, Object]

    fetch = Gem::RemoteFetcher.new nil, dns
    assert_equal URI.parse("http://gems.example.com/foo"), fetch.api_endpoint(uri)

    target.verify
    dns.verify
  end

  def test_api_endpoint_ignores_trans_domain_values
    uri = URI.parse "http://gems.example.com/foo"
    target = MiniTest::Mock.new
    target.expect :target, "blah.com"

    dns = MiniTest::Mock.new
    dns.expect :getresource, target, [String, Object]

    fetch = Gem::RemoteFetcher.new nil, dns
    assert_equal URI.parse("http://gems.example.com/foo"), fetch.api_endpoint(uri)

    target.verify
    dns.verify
  end

  def test_api_endpoint_ignores_trans_domain_values_that_starts_with_original
    uri = URI.parse "http://example.com/foo"
    target = MiniTest::Mock.new
    target.expect :target, "example.combadguy.com"

    dns = MiniTest::Mock.new
    dns.expect :getresource, target, [String, Object]

    fetch = Gem::RemoteFetcher.new nil, dns
    assert_equal URI.parse("http://example.com/foo"), fetch.api_endpoint(uri)

    target.verify
    dns.verify
  end

  def test_api_endpoint_ignores_trans_domain_values_that_end_with_original
    uri = URI.parse "http://example.com/foo"
    target = MiniTest::Mock.new
    target.expect :target, "badexample.com"

    dns = MiniTest::Mock.new
    dns.expect :getresource, target, [String, Object]

    fetch = Gem::RemoteFetcher.new nil, dns
    assert_equal URI.parse("http://example.com/foo"), fetch.api_endpoint(uri)

    target.verify
    dns.verify
  end

  def test_api_endpoint_timeout_warning
    uri = URI.parse "http://gems.example.com/foo"

    dns = MiniTest::Mock.new
    def dns.getresource arg, *rest
      raise Resolv::ResolvError.new('timeout!')
    end

    fetch = Gem::RemoteFetcher.new nil, dns
    begin
      old_verbose, Gem.configuration.verbose = Gem.configuration.verbose, 1
      endpoint = use_ui @ui do
        fetch.api_endpoint(uri)
      end
    ensure
      Gem.configuration.verbose = old_verbose
    end

    assert_equal uri, endpoint

    assert_equal "Getting SRV record failed: timeout!\n", @ui.output

    dns.verify
  end

  def test_cache_update_path
    uri = URI 'http://example/file'
    path = File.join @tempdir, 'file'

    fetcher = util_fuck_with_fetcher 'hello'

    data = fetcher.cache_update_path uri, path

    assert_equal 'hello', data

    assert_equal 'hello', File.read(path)
  end

  def test_cache_update_path_no_update
    uri = URI 'http://example/file'
    path = File.join @tempdir, 'file'

    fetcher = util_fuck_with_fetcher 'hello'

    data = fetcher.cache_update_path uri, path, false

    assert_equal 'hello', data

    refute_path_exists path
  end

  def util_fuck_with_fetcher data, blow = false
    fetcher = Gem::RemoteFetcher.fetcher
    fetcher.instance_variable_set :@test_data, data

    unless blow then
      def fetcher.fetch_path arg, *rest
        @test_arg = arg
        @test_data
      end
    else
      def fetcher.fetch_path arg, *rest
        # OMG I'm such an ass
        class << self; remove_method :fetch_path; end
        def self.fetch_path arg, *rest
          @test_arg = arg
          @test_data
        end

        raise Gem::RemoteFetcher::FetchError.new("haha!", nil)
      end
    end

    fetcher
  end

  def test_download
    a1_data = nil
    File.open @a1_gem, 'rb' do |fp|
      a1_data = fp.read
    end

    fetcher = util_fuck_with_fetcher a1_data

    a1_cache_gem = @a1.cache_file
    assert_equal a1_cache_gem, fetcher.download(@a1, 'http://gems.example.com')
    assert_equal("http://gems.example.com/gems/a-1.gem",
                 fetcher.instance_variable_get(:@test_arg).to_s)
    assert File.exist?(a1_cache_gem)
  end

  def test_download_with_auth
    a1_data = nil
    File.open @a1_gem, 'rb' do |fp|
      a1_data = fp.read
    end

    fetcher = util_fuck_with_fetcher a1_data

    a1_cache_gem = @a1.cache_file
    assert_equal a1_cache_gem, fetcher.download(@a1, 'http://user:password@gems.example.com')
    assert_equal("http://user:password@gems.example.com/gems/a-1.gem",
                 fetcher.instance_variable_get(:@test_arg).to_s)
    assert File.exist?(a1_cache_gem)
  end

  def test_download_with_encoded_auth
    a1_data = nil
    File.open @a1_gem, 'rb' do |fp|
      a1_data = fp.read
    end

    fetcher = util_fuck_with_fetcher a1_data

    a1_cache_gem = @a1.cache_file
    assert_equal a1_cache_gem, fetcher.download(@a1, 'http://user:%25pas%25sword@gems.example.com')
    assert_equal("http://user:%25pas%25sword@gems.example.com/gems/a-1.gem",
                 fetcher.instance_variable_get(:@test_arg).to_s)
    assert File.exist?(a1_cache_gem)
  end

  def test_download_cached
    FileUtils.mv @a1_gem, @cache_dir

    inst = Gem::RemoteFetcher.fetcher

    assert_equal @a1.cache_file, inst.download(@a1, 'http://gems.example.com')
  end

  def test_download_local
    FileUtils.mv @a1_gem, @tempdir
    local_path = File.join @tempdir, @a1.file_name
    inst = nil

    Dir.chdir @tempdir do
      inst = Gem::RemoteFetcher.fetcher
    end

    assert_equal @a1.cache_file, inst.download(@a1, local_path)
  end

  def test_download_local_space
    space_path = File.join @tempdir, 'space path'
    FileUtils.mkdir space_path
    FileUtils.mv @a1_gem, space_path
    local_path = File.join space_path, @a1.file_name
    inst = nil

    Dir.chdir @tempdir do
      inst = Gem::RemoteFetcher.fetcher
    end

    assert_equal @a1.cache_file, inst.download(@a1, local_path)
  end

  def test_download_install_dir
    a1_data = File.open @a1_gem, 'rb' do |fp|
      fp.read
    end

    fetcher = util_fuck_with_fetcher a1_data

    install_dir = File.join @tempdir, 'more_gems'

    a1_cache_gem = File.join install_dir, "cache", @a1.file_name
    FileUtils.mkdir_p(File.dirname(a1_cache_gem))
    actual = fetcher.download(@a1, 'http://gems.example.com', install_dir)

    assert_equal a1_cache_gem, actual
    assert_equal("http://gems.example.com/gems/a-1.gem",
                 fetcher.instance_variable_get(:@test_arg).to_s)

    assert File.exist?(a1_cache_gem)
  end

  unless win_platform? # File.chmod doesn't work
    def test_download_local_read_only
      FileUtils.mv @a1_gem, @tempdir
      local_path = File.join @tempdir, @a1.file_name
      inst = nil
      FileUtils.chmod 0555, @a1.cache_dir

      Dir.chdir @tempdir do
        inst = Gem::RemoteFetcher.fetcher
      end

      assert_equal(File.join(@tempdir, @a1.file_name),
                   inst.download(@a1, local_path))
    ensure
      FileUtils.chmod 0755, @a1.cache_dir
    end

    def test_download_read_only
      FileUtils.chmod 0555, @a1.cache_dir
      FileUtils.chmod 0555, @gemhome

      fetcher = util_fuck_with_fetcher File.read(@a1_gem)
      fetcher.download(@a1, 'http://gems.example.com')
      a1_cache_gem = File.join Gem.user_dir, "cache", @a1.file_name
      assert File.exist? a1_cache_gem
    ensure
      FileUtils.chmod 0755, @gemhome
      FileUtils.chmod 0755, @a1.cache_dir
    end
  end

  def test_download_platform_legacy
    original_platform = 'old-platform'

    e1, e1_gem = util_gem 'e', '1' do |s|
      s.platform = Gem::Platform::CURRENT
      s.instance_variable_set :@original_platform, original_platform
    end
    e1.loaded_from = File.join(@gemhome, 'specifications', e1.full_name)

    e1_data = nil
    File.open e1_gem, 'rb' do |fp|
      e1_data = fp.read
    end

    fetcher = util_fuck_with_fetcher e1_data, :blow_chunks

    e1_cache_gem = e1.cache_file

    assert_equal e1_cache_gem, fetcher.download(e1, 'http://gems.example.com')

    assert_equal("http://gems.example.com/gems/#{e1.original_name}.gem",
                 fetcher.instance_variable_get(:@test_arg).to_s)
    assert File.exist?(e1_cache_gem)
  end

  def test_download_same_file
    FileUtils.mv @a1_gem, @tempdir
    local_path = File.join @tempdir, @a1.file_name
    inst = nil

    Dir.chdir @tempdir do
      inst = Gem::RemoteFetcher.fetcher
    end

    cache_path = @a1.cache_file
    FileUtils.mv local_path, cache_path

    gem = Gem::Package.new cache_path

    assert_equal cache_path, inst.download(gem.spec, cache_path)
  end

  def test_download_unsupported
    inst = Gem::RemoteFetcher.fetcher

    e = assert_raises ArgumentError do
      inst.download @a1, 'ftp://gems.rubyforge.org'
    end

    assert_equal 'unsupported URI scheme ftp', e.message
  end

  def test_download_to_cache
    @a2, @a2_gem = util_gem 'a', '2'

    util_setup_spec_fetcher @a1, @a2
    @fetcher.instance_variable_set :@a1, @a1
    @fetcher.instance_variable_set :@a2, @a2
    def @fetcher.fetch_path uri, mtime = nil, head = false
      case uri.request_uri
      when /#{@a1.spec_name}/ then
        Gem.deflate Marshal.dump @a1
      when /#{@a2.spec_name}/ then
        Gem.deflate Marshal.dump @a2
      else
        uri.to_s
      end
    end

    gem = Gem::RemoteFetcher.fetcher.download_to_cache dep 'a'

    assert_equal @a2.file_name, File.basename(gem)
  end

  def test_fetch_path_gzip
    fetcher = Gem::RemoteFetcher.new nil
    @fetcher = fetcher

    def fetcher.fetch_http(uri, mtime, head = nil)
      Gem.gzip 'foo'
    end

    assert_equal 'foo', fetcher.fetch_path(@uri + 'foo.gz')
  end

  def test_fetch_path_gzip_unmodified
    fetcher = Gem::RemoteFetcher.new nil
    @fetcher = fetcher

    def fetcher.fetch_http(uri, mtime, head = nil)
      nil
    end

    assert_equal nil, fetcher.fetch_path(@uri + 'foo.gz', Time.at(0))
  end

  def test_fetch_path_io_error
    fetcher = Gem::RemoteFetcher.new nil
    @fetcher = fetcher

    def fetcher.fetch_http(*)
      raise EOFError
    end

    url = 'http://example.com/uri'

    e = assert_raises Gem::RemoteFetcher::FetchError do
      fetcher.fetch_path url
    end

    assert_equal "EOFError: EOFError (#{url})", e.message
    assert_equal url, e.uri
  end

  def test_fetch_path_socket_error
    fetcher = Gem::RemoteFetcher.new nil
    @fetcher = fetcher

    def fetcher.fetch_http(uri, mtime, head = nil)
      raise SocketError
    end

    url = 'http://example.com/uri'

    e = assert_raises Gem::RemoteFetcher::FetchError do
      fetcher.fetch_path url
    end

    assert_equal "SocketError: SocketError (#{url})", e.message
    assert_equal url, e.uri
  end

  def test_fetch_path_system_call_error
    fetcher = Gem::RemoteFetcher.new nil
    @fetcher = fetcher

    def fetcher.fetch_http(uri, mtime = nil, head = nil)
      raise Errno::ECONNREFUSED, 'connect(2)'
    end

    url = 'http://example.com/uri'

    e = assert_raises Gem::RemoteFetcher::FetchError do
      fetcher.fetch_path url
    end

    assert_match %r|ECONNREFUSED:.*connect\(2\) \(#{Regexp.escape url}\)\z|,
                 e.message
    assert_equal url, e.uri
  end

  def test_fetch_path_unmodified
    fetcher = Gem::RemoteFetcher.new nil
    @fetcher = fetcher

    def fetcher.fetch_http(uri, mtime, head = nil)
      nil
    end

    assert_equal nil, fetcher.fetch_path(URI.parse(@gem_repo), Time.at(0))
  end

  def test_implicit_no_proxy
    use_ui @ui do
      ENV['http_proxy'] = 'http://fakeurl:12345'
      fetcher = Gem::RemoteFetcher.new :no_proxy
      @fetcher = fetcher
      assert_data_from_server fetcher.fetch_path(@server_uri)
    end
  end

  def test_implicit_proxy
    use_ui @ui do
      ENV['http_proxy'] = @proxy_uri
      fetcher = Gem::RemoteFetcher.new nil
      @fetcher = fetcher
      assert_data_from_proxy fetcher.fetch_path(@server_uri)
    end
  end

  def test_implicit_upper_case_proxy
    use_ui @ui do
      ENV['HTTP_PROXY'] = @proxy_uri
      fetcher = Gem::RemoteFetcher.new nil
      @fetcher = fetcher
      assert_data_from_proxy fetcher.fetch_path(@server_uri)
    end
  end

  def test_implicit_proxy_no_env
    use_ui @ui do
      fetcher = Gem::RemoteFetcher.new nil
      @fetcher = fetcher
      assert_data_from_server fetcher.fetch_path(@server_uri)
    end
  end

  def test_fetch_http
    fetcher = Gem::RemoteFetcher.new nil
    @fetcher = fetcher
    url = 'http://gems.example.com/redirect'

    def fetcher.request(uri, request_class, last_modified = nil)
      url = 'http://gems.example.com/redirect'
      unless defined? @requested then
        @requested = true
        res = Net::HTTPMovedPermanently.new nil, 301, nil
        res.add_field 'Location', url
        res
      else
        res = Net::HTTPOK.new nil, 200, nil
        def res.body() 'real_path' end
        res
      end
    end

    data = fetcher.fetch_http URI.parse(url)

    assert_equal 'real_path', data
  end

  def test_fetch_http_redirects
    fetcher = Gem::RemoteFetcher.new nil
    @fetcher = fetcher
    url = 'http://gems.example.com/redirect'

    def fetcher.request(uri, request_class, last_modified = nil)
      url = 'http://gems.example.com/redirect'
      res = Net::HTTPMovedPermanently.new nil, 301, nil
      res.add_field 'Location', url
      res
    end

    e = assert_raises Gem::RemoteFetcher::FetchError do
      fetcher.fetch_http URI.parse(url)
    end

    assert_equal "too many redirects (#{url})", e.message
  end

  def test_fetch_http_with_additional_headers
    ENV["http_proxy"] = @proxy_uri
    ENV["no_proxy"] = URI::parse(@server_uri).host
    fetcher = Gem::RemoteFetcher.new nil, nil, {"X-Captain" => "murphy"}
    @fetcher = fetcher
    assert_equal "murphy", fetcher.fetch_path(@server_uri)
  end

  def test_fetch_s3
    fetcher = Gem::RemoteFetcher.new nil
    @fetcher = fetcher
    url = 's3://testuser:testpass@my-bucket/gems/specs.4.8.gz'
    $fetched_uri = nil

    def fetcher.request(uri, request_class, last_modified = nil)
      $fetched_uri = uri
      res = Net::HTTPOK.new nil, 200, nil
      def res.body() 'success' end
      res
    end

    def fetcher.s3_expiration
      1395098371
    end

    data = fetcher.fetch_s3 URI.parse(url)

    assert_equal 'https://my-bucket.s3.amazonaws.com/gems/specs.4.8.gz?AWSAccessKeyId=testuser&Expires=1395098371&Signature=eUTr7NkpZEet%2BJySE%2BfH6qukroI%3D', $fetched_uri.to_s
    assert_equal 'success', data
  ensure
    $fetched_uri = nil
  end

  def test_fetch_s3_no_creds
    fetcher = Gem::RemoteFetcher.new nil
    @fetcher = fetcher
    url = 's3://my-bucket/gems/specs.4.8.gz'
    e = assert_raises Gem::RemoteFetcher::FetchError do
      fetcher.fetch_s3 URI.parse(url)
    end

    assert_match "credentials needed", e.message
  end

  def test_observe_no_proxy_env_single_host
    use_ui @ui do
      ENV["http_proxy"] = @proxy_uri
      ENV["no_proxy"] = URI::parse(@server_uri).host
      fetcher = Gem::RemoteFetcher.new nil
      @fetcher = fetcher
      assert_data_from_server fetcher.fetch_path(@server_uri)
    end
  end

  def test_observe_no_proxy_env_list
    use_ui @ui do
      ENV["http_proxy"] = @proxy_uri
      ENV["no_proxy"] = "fakeurl.com, #{URI::parse(@server_uri).host}"
      fetcher = Gem::RemoteFetcher.new nil
      @fetcher = fetcher
      assert_data_from_server fetcher.fetch_path(@server_uri)
    end
  end

  def test_request_block
    fetcher = Gem::RemoteFetcher.new nil
    @fetcher = fetcher

    assert_throws :block_called do
      fetcher.request URI('http://example'), Net::HTTP::Get do |req|
        assert_kind_of Net::HTTPGenericRequest, req
        throw :block_called
      end
    end
  end

  def test_yaml_error_on_size
    use_ui @ui do
      self.class.enable_yaml = false
      fetcher = Gem::RemoteFetcher.new nil
      @fetcher = fetcher
      assert_error { fetcher.size }
    end
  end

  def test_ssl_connection
    ssl_server = self.class.start_ssl_server
    temp_ca_cert = File.join(DIR, 'ca_cert.pem')
    with_configured_fetcher(":ssl_ca_cert: #{temp_ca_cert}") do |fetcher|
      fetcher.fetch_path("https://localhost:#{ssl_server.config[:Port]}/yaml")
    end
  end

  def test_ssl_client_cert_auth_connection
    skip 'openssl is missing' unless defined?(OpenSSL::SSL)

    ssl_server = self.class.start_ssl_server({
      :SSLVerifyClient =>
        OpenSSL::SSL::VERIFY_PEER|OpenSSL::SSL::VERIFY_FAIL_IF_NO_PEER_CERT})

    temp_ca_cert = File.join(DIR, 'ca_cert.pem')
    temp_client_cert = File.join(DIR, 'client.pem')

    with_configured_fetcher(
      ":ssl_ca_cert: #{temp_ca_cert}\n" +
      ":ssl_client_cert: #{temp_client_cert}\n") do |fetcher|
      fetcher.fetch_path("https://localhost:#{ssl_server.config[:Port]}/yaml")
    end
  end

  def test_do_not_allow_invalid_client_cert_auth_connection
    skip 'openssl is missing' unless defined?(OpenSSL::SSL)

    ssl_server = self.class.start_ssl_server({
      :SSLVerifyClient =>
        OpenSSL::SSL::VERIFY_PEER|OpenSSL::SSL::VERIFY_FAIL_IF_NO_PEER_CERT})

    temp_ca_cert = File.join(DIR, 'ca_cert.pem')
    temp_client_cert = File.join(DIR, 'invalid_client.pem')

    with_configured_fetcher(
      ":ssl_ca_cert: #{temp_ca_cert}\n" +
      ":ssl_client_cert: #{temp_client_cert}\n") do |fetcher|
        assert_raises Gem::RemoteFetcher::FetchError do
          fetcher.fetch_path("https://localhost:#{ssl_server.config[:Port]}/yaml")
        end
    end
  end

  def test_do_not_allow_insecure_ssl_connection_by_default
    ssl_server = self.class.start_ssl_server
    with_configured_fetcher do |fetcher|
      assert_raises Gem::RemoteFetcher::FetchError do
        fetcher.fetch_path("https://localhost:#{ssl_server.config[:Port]}/yaml")
      end
    end
  end

  def test_ssl_connection_allow_verify_none
    ssl_server = self.class.start_ssl_server
    with_configured_fetcher(":ssl_verify_mode: 0") do |fetcher|
      fetcher.fetch_path("https://localhost:#{ssl_server.config[:Port]}/yaml")
    end
  end

  def test_do_not_follow_insecure_redirect
    ssl_server = self.class.start_ssl_server
    temp_ca_cert = File.join(DIR, 'ca_cert.pem'),
    with_configured_fetcher(":ssl_ca_cert: #{temp_ca_cert}") do |fetcher|
      assert_raises Gem::RemoteFetcher::FetchError do
        fetcher.fetch_path("https://localhost:#{ssl_server.config[:Port]}/insecure_redirect?to=#{@server_uri}")
      end
    end
  end

  def with_configured_fetcher(config_str = nil, &block)
    if config_str
      temp_conf = File.join @tempdir, '.gemrc'
      File.open temp_conf, 'w' do |fp|
        fp.puts config_str
      end
      Gem.configuration = Gem::ConfigFile.new %W[--config-file #{temp_conf}]
    end
    fetcher = Gem::RemoteFetcher.new
    yield fetcher
  ensure
    fetcher.close_all
    Gem.configuration = nil
  end

  def assert_error(exception_class=Exception)
    got_exception = false

    begin
      yield
    rescue exception_class
      got_exception = true
    end

    assert got_exception, "Expected exception conforming to #{exception_class}"
  end

  def assert_data_from_server(data)
    assert_match(/0\.4\.11/, data, "Data is not from server")
  end

  def assert_data_from_proxy(data)
    assert_match(/0\.4\.2/, data, "Data is not from proxy")
  end

  class NilLog < WEBrick::Log
    def log(level, data) #Do nothing
    end
  end

  class << self
    attr_reader :normal_server, :proxy_server
    attr_accessor :enable_zip, :enable_yaml

    def start_servers
      @normal_server ||= start_server(SERVER_DATA)
      @proxy_server  ||= start_server(PROXY_DATA)
      @enable_yaml = true
      @enable_zip = false
      @ssl_server = nil
      @ssl_server_thread = nil
    end

    def stop_servers
      if @normal_server
        @normal_server.kill.join
        @normal_server = nil
      end
      if @proxy_server
        @proxy_server.kill.join
        @proxy_server = nil
      end
      if @ssl_server
        @ssl_server.stop
        @ssl_server = nil
      end
      if @ssl_server_thread
        @ssl_server_thread.kill.join
        @ssl_server_thread = nil
      end
      utils = WEBrick::Utils    # TimeoutHandler is since 1.9
      utils::TimeoutHandler.terminate if defined?(utils::TimeoutHandler.terminate)
    end

    def normal_server_port
      @normal_server[:server].config[:Port]
    end

    def proxy_server_port
      @proxy_server[:server].config[:Port]
    end

    DIR = File.expand_path(File.dirname(__FILE__))

    def start_ssl_server(config = {})
      raise MiniTest::Skip, 'openssl not installed' unless
        defined?(OpenSSL::SSL)

      null_logger = NilLog.new
      server = WEBrick::HTTPServer.new({
        :Port => 0,
        :Logger => null_logger,
        :AccessLog => [],
        :SSLEnable => true,
        :SSLCACertificateFile => File.join(DIR, 'ca_cert.pem'),
        :SSLCertificate => cert('ssl_cert.pem'),
        :SSLPrivateKey => key('ssl_key.pem'),
        :SSLVerifyClient => nil,
        :SSLCertName => nil
      }.merge(config))
      server.mount_proc("/yaml") { |req, res|
        res.body = "--- true\n"
      }
      server.mount_proc("/insecure_redirect") { |req, res|
        res.set_redirect(WEBrick::HTTPStatus::MovedPermanently, req.query['to'])
      }
      server.ssl_context.tmp_dh_callback = proc { TEST_KEY_DH2048 }
      t = Thread.new do
        begin
          server.start
        rescue Exception => ex
          abort ex.message
          puts "ERROR during server thread: #{ex.message}"
        ensure
          server.shutdown
        end
      end
      while server.status != :Running
        sleep 0.1
        unless t.alive?
          t.join
          raise
        end
      end
      @ssl_server = server
      @ssl_server_thread = t
      server
    end

    private

    def start_server(data)
      null_logger = NilLog.new
      s = WEBrick::HTTPServer.new(
        :Port            => 0,
        :DocumentRoot    => nil,
        :Logger          => null_logger,
        :AccessLog       => null_logger
        )
      s.mount_proc("/kill") { |req, res| s.shutdown }
      s.mount_proc("/yaml") { |req, res|
        if req["X-Captain"]
          res.body = req["X-Captain"]
        elsif @enable_yaml
          res.body = data
          res['Content-Type'] = 'text/plain'
          res['content-length'] = data.size
        else
          res.status = "404"
          res.body = "<h1>NOT FOUND</h1>"
          res['Content-Type'] = 'text/html'
        end
      }
      s.mount_proc("/yaml.Z") { |req, res|
        if @enable_zip
          res.body = Zlib::Deflate.deflate(data)
          res['Content-Type'] = 'text/plain'
        else
          res.status = "404"
          res.body = "<h1>NOT FOUND</h1>"
          res['Content-Type'] = 'text/html'
        end
      }
      th = Thread.new do
        begin
          s.start
        rescue Exception => ex
          abort "ERROR during server thread: #{ex.message}"
        ensure
          s.shutdown
        end
      end
      th[:server] = s
      th
    end

    def cert(filename)
      OpenSSL::X509::Certificate.new(File.read(File.join(DIR, filename)))
    end

    def key(filename)
      OpenSSL::PKey::RSA.new(File.read(File.join(DIR, filename)))
    end
  end

  def test_correct_for_windows_path
    path = "/C:/WINDOWS/Temp/gems"
    assert_equal "C:/WINDOWS/Temp/gems", @fetcher.correct_for_windows_path(path)

    path = "/home/skillet"
    assert_equal "/home/skillet", @fetcher.correct_for_windows_path(path)
  end

end