summaryrefslogtreecommitdiff
path: root/lib/bundler/rubygems_integration.rb
blob: 3ca1831deee5ce013d221cea6e421a306e15c3b6 (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
# frozen_string_literal: true

module Bundler
  class RubygemsIntegration
    if defined?(Gem::Ext::Builder::CHDIR_MONITOR)
      EXT_LOCK = Gem::Ext::Builder::CHDIR_MONITOR
    else
      require "monitor"

      EXT_LOCK = Monitor.new
    end

    def self.version
      @version ||= Gem::Version.new(Gem::VERSION)
    end

    def self.provides?(req_str)
      Gem::Requirement.new(req_str).satisfied_by?(version)
    end

    def initialize
      @replaced_methods = {}
      backport_ext_builder_monitor
    end

    def version
      self.class.version
    end

    def provides?(req_str)
      self.class.provides?(req_str)
    end

    def build_args
      Gem::Command.build_args
    end

    def build_args=(args)
      Gem::Command.build_args = args
    end

    def loaded_specs(name)
      Gem.loaded_specs[name]
    end

    def add_to_load_path(paths)
      return Gem.add_to_load_path(*paths) if Gem.respond_to?(:add_to_load_path)

      if insert_index = Gem.load_path_insert_index
        # Gem directories must come after -I and ENV['RUBYLIB']
        $LOAD_PATH.insert(insert_index, *paths)
      else
        # We are probably testing in core, -I and RUBYLIB don't apply
        $LOAD_PATH.unshift(*paths)
      end
    end

    def mark_loaded(spec)
      if spec.respond_to?(:activated=)
        current = Gem.loaded_specs[spec.name]
        current.activated = false if current
        spec.activated = true
      end
      Gem.loaded_specs[spec.name] = spec
    end

    def validate(spec)
      Bundler.ui.silence { spec.validate(false) }
    rescue Gem::InvalidSpecificationException => e
      error_message = "The gemspec at #{spec.loaded_from} is not valid. Please fix this gemspec.\n" \
        "The validation error was '#{e.message}'\n"
      raise Gem::InvalidSpecificationException.new(error_message)
    rescue Errno::ENOENT
      nil
    end

    def set_installed_by_version(spec, installed_by_version = Gem::VERSION)
      return unless spec.respond_to?(:installed_by_version=)
      spec.installed_by_version = Gem::Version.create(installed_by_version)
    end

    def spec_missing_extensions?(spec, default = true)
      return spec.missing_extensions? if spec.respond_to?(:missing_extensions?)

      return false if spec_default_gem?(spec)
      return false if spec.extensions.empty?

      default
    end

    def spec_default_gem?(spec)
      spec.respond_to?(:default_gem?) && spec.default_gem?
    end

    def spec_matches_for_glob(spec, glob)
      return spec.matches_for_glob(glob) if spec.respond_to?(:matches_for_glob)

      spec.load_paths.map do |lp|
        Dir["#{lp}/#{glob}#{suffix_pattern}"]
      end.flatten(1)
    end

    def spec_extension_dir(spec)
      return unless spec.respond_to?(:extension_dir)
      spec.extension_dir
    end

    def stub_set_spec(stub, spec)
      stub.instance_variable_set(:@spec, spec)
    end

    def path(obj)
      obj.to_s
    end

    def platforms
      return [Gem::Platform::RUBY] if Bundler.settings[:force_ruby_platform]
      Gem.platforms
    end

    def configuration
      require_relative "psyched_yaml"
      Gem.configuration
    rescue Gem::SystemExitException, LoadError => e
      Bundler.ui.error "#{e.class}: #{e.message}"
      Bundler.ui.trace e
      raise
    rescue YamlLibrarySyntaxError => e
      raise YamlSyntaxError.new(e, "Your RubyGems configuration, which is " \
        "usually located in ~/.gemrc, contains invalid YAML syntax.")
    end

    def ruby_engine
      Gem.ruby_engine
    end

    def read_binary(path)
      Gem.read_binary(path)
    end

    def inflate(obj)
      require "rubygems/util"

      Gem::Util.inflate(obj)
    end

    def correct_for_windows_path(path)
      require "rubygems/util"

      if Gem::Util.respond_to?(:correct_for_windows_path)
        Gem::Util.correct_for_windows_path(path)
      elsif path[0].chr == "/" && path[1].chr =~ /[a-z]/i && path[2].chr == ":"
        path[1..-1]
      else
        path
      end
    end

    def sources=(val)
      # Gem.configuration creates a new Gem::ConfigFile, which by default will read ~/.gemrc
      # If that file exists, its settings (including sources) will overwrite the values we
      # are about to set here. In order to avoid that, we force memoizing the config file now.
      configuration

      Gem.sources = val
    end

    def sources
      Gem.sources
    end

    def gem_dir
      Gem.dir
    end

    def gem_bindir
      Gem.bindir
    end

    def user_home
      Gem.user_home
    end

    def gem_path
      Gem.path
    end

    def reset
      Gem::Specification.reset
    end

    def post_reset_hooks
      Gem.post_reset_hooks
    end

    def suffix_pattern
      Gem.suffix_pattern
    end

    def gem_cache
      gem_path.map {|p| File.expand_path("cache", p) }
    end

    def spec_cache_dirs
      @spec_cache_dirs ||= begin
        dirs = gem_path.map {|dir| File.join(dir, "specifications") }
        dirs << Gem.spec_cache_dir if Gem.respond_to?(:spec_cache_dir) # Not in RubyGems 2.0.3 or earlier
        dirs.uniq.select {|dir| File.directory? dir }
      end
    end

    def marshal_spec_dir
      Gem::MARSHAL_SPEC_DIR
    end

    def clear_paths
      Gem.clear_paths
    end

    def bin_path(gem, bin, ver)
      Gem.bin_path(gem, bin, ver)
    end

    def preserve_paths
      # this is a no-op outside of RubyGems 1.8
      yield
    end

    def loaded_gem_paths
      loaded_gem_paths = Gem.loaded_specs.map {|_, s| s.full_require_paths }
      loaded_gem_paths.flatten
    end

    def load_plugins
      Gem.load_plugins if Gem.respond_to?(:load_plugins)
    end

    def load_plugin_files(files)
      Gem.load_plugin_files(files) if Gem.respond_to?(:load_plugin_files)
    end

    def ui=(obj)
      Gem::DefaultUserInteraction.ui = obj
    end

    def ext_lock
      EXT_LOCK
    end

    def with_build_args(args)
      ext_lock.synchronize do
        old_args = build_args
        begin
          self.build_args = args
          yield
        ensure
          self.build_args = old_args
        end
      end
    end

    def spec_from_gem(path, policy = nil)
      require "rubygems/security"
      require_relative "psyched_yaml"
      gem_from_path(path, security_policies[policy]).spec
    rescue Gem::Package::FormatError
      raise GemspecError, "Could not read gem at #{path}. It may be corrupted."
    rescue Exception, Gem::Exception, Gem::Security::Exception => e # rubocop:disable Lint/RescueException
      if e.is_a?(Gem::Security::Exception) ||
          e.message =~ /unknown trust policy|unsigned gem/i ||
          e.message =~ /couldn't verify (meta)?data signature/i
        raise SecurityError,
          "The gem #{File.basename(path, ".gem")} can't be installed because " \
          "the security policy didn't allow it, with the message: #{e.message}"
      else
        raise e
      end
    end

    def build_gem(gem_dir, spec)
      build(spec)
    end

    def security_policy_keys
      %w[High Medium Low AlmostNo No].map {|level| "#{level}Security" }
    end

    def security_policies
      @security_policies ||= begin
        require "rubygems/security"
        Gem::Security::Policies
      rescue LoadError, NameError
        {}
      end
    end

    def reverse_rubygems_kernel_mixin
      # Disable rubygems' gem activation system
      kernel = (class << ::Kernel; self; end)
      [kernel, ::Kernel].each do |k|
        if k.private_method_defined?(:gem_original_require)
          redefine_method(k, :require, k.instance_method(:gem_original_require))
        end
      end
    end

    def replace_gem(specs, specs_by_name)
      reverse_rubygems_kernel_mixin

      executables = nil

      kernel = (class << ::Kernel; self; end)
      [kernel, ::Kernel].each do |kernel_class|
        redefine_method(kernel_class, :gem) do |dep, *reqs|
          if executables && executables.include?(File.basename(caller.first.split(":").first))
            break
          end

          reqs.pop if reqs.last.is_a?(Hash)

          unless dep.respond_to?(:name) && dep.respond_to?(:requirement)
            dep = Gem::Dependency.new(dep, reqs)
          end

          if spec = specs_by_name[dep.name]
            return true if dep.matches_spec?(spec)
          end

          message = if spec.nil?
            "#{dep.name} is not part of the bundle." \
            " Add it to your #{Bundler.default_gemfile.basename}."
          else
            "can't activate #{dep}, already activated #{spec.full_name}. " \
            "Make sure all dependencies are added to Gemfile."
          end

          e = Gem::LoadError.new(message)
          e.name = dep.name
          if e.respond_to?(:requirement=)
            e.requirement = dep.requirement
          elsif e.respond_to?(:version_requirement=)
            e.version_requirement = dep.requirement
          end
          raise e
        end

        # backwards compatibility shim, see https://github.com/bundler/bundler/issues/5102
        kernel_class.send(:public, :gem) if Bundler.feature_flag.setup_makes_kernel_gem_public?
      end
    end

    # Used to make bin stubs that are not created by bundler work
    # under bundler. The new Gem.bin_path only considers gems in
    # +specs+
    def replace_bin_path(specs_by_name)
      gem_class = (class << Gem; self; end)

      redefine_method(gem_class, :find_spec_for_exe) do |gem_name, *args|
        exec_name = args.first
        raise ArgumentError, "you must supply exec_name" unless exec_name

        spec_with_name = specs_by_name[gem_name]
        matching_specs_by_exec_name = specs_by_name.values.select {|s| s.executables.include?(exec_name) }
        spec = matching_specs_by_exec_name.delete(spec_with_name)

        unless spec || !matching_specs_by_exec_name.empty?
          message = "can't find executable #{exec_name} for gem #{gem_name}"
          if spec_with_name.nil?
            message += ". #{gem_name} is not currently included in the bundle, " \
                       "perhaps you meant to add it to your #{Bundler.default_gemfile.basename}?"
          end
          raise Gem::Exception, message
        end

        unless spec
          spec = matching_specs_by_exec_name.shift
          warn \
            "Bundler is using a binstub that was created for a different gem (#{spec.name}).\n" \
            "You should run `bundle binstub #{gem_name}` " \
            "to work around a system/bundle conflict."
        end

        unless matching_specs_by_exec_name.empty?
          conflicting_names = matching_specs_by_exec_name.map(&:name).join(", ")
          warn \
            "The `#{exec_name}` executable in the `#{spec.name}` gem is being loaded, but it's also present in other gems (#{conflicting_names}).\n" \
            "If you meant to run the executable for another gem, make sure you use a project specific binstub (`bundle binstub <gem_name>`).\n" \
            "If you plan to use multiple conflicting executables, generate binstubs for them and disambiguate their names."
        end

        spec
      end

      redefine_method(gem_class, :activate_bin_path) do |name, *args|
        exec_name = args.first
        return ENV["BUNDLE_BIN_PATH"] if exec_name == "bundle"

        # Copy of Rubygems activate_bin_path impl
        requirement = args.last
        spec = find_spec_for_exe name, exec_name, [requirement]

        gem_bin = File.join(spec.full_gem_path, spec.bindir, exec_name)
        gem_from_path_bin = File.join(File.dirname(spec.loaded_from), spec.bindir, exec_name)
        File.exist?(gem_bin) ? gem_bin : gem_from_path_bin
      end

      redefine_method(gem_class, :bin_path) do |name, *args|
        exec_name = args.first
        return ENV["BUNDLE_BIN_PATH"] if exec_name == "bundle"

        spec = find_spec_for_exe(name, *args)
        exec_name ||= spec.default_executable

        gem_bin = File.join(spec.full_gem_path, spec.bindir, exec_name)
        gem_from_path_bin = File.join(File.dirname(spec.loaded_from), spec.bindir, exec_name)
        File.exist?(gem_bin) ? gem_bin : gem_from_path_bin
      end
    end

    # Replace or hook into RubyGems to provide a bundlerized view
    # of the world.
    def replace_entrypoints(specs)
      specs_by_name = specs.reduce({}) do |h, s|
        h[s.name] = s
        h
      end

      Bundler.rubygems.default_stubs.each do |stub|
        default_spec = stub.to_spec
        default_spec_name = default_spec.name
        next if specs_by_name.key?(default_spec_name)

        specs << default_spec
        specs_by_name[default_spec_name] = default_spec
      end

      replace_gem(specs, specs_by_name)
      stub_rubygems(specs)
      replace_bin_path(specs_by_name)

      Gem.clear_paths
    end

    def undo_replacements
      @replaced_methods.each do |(sym, klass), method|
        redefine_method(klass, sym, method)
      end
      if Binding.public_method_defined?(:source_location)
        post_reset_hooks.reject! {|proc| proc.binding.source_location[0] == __FILE__ }
      else
        post_reset_hooks.reject! {|proc| proc.binding.eval("__FILE__") == __FILE__ }
      end
      @replaced_methods.clear
    end

    def redefine_method(klass, method, unbound_method = nil, &block)
      visibility = method_visibility(klass, method)
      begin
        if (instance_method = klass.instance_method(method)) && method != :initialize
          # doing this to ensure we also get private methods
          klass.send(:remove_method, method)
        end
      rescue NameError
        # method isn't defined
        nil
      end
      @replaced_methods[[method, klass]] = instance_method
      if unbound_method
        klass.send(:define_method, method, unbound_method)
        klass.send(visibility, method)
      elsif block
        klass.send(:define_method, method, &block)
        klass.send(visibility, method)
      end
    end

    def method_visibility(klass, method)
      if klass.private_method_defined?(method)
        :private
      elsif klass.protected_method_defined?(method)
        :protected
      else
        :public
      end
    end

    def stub_rubygems(specs)
      Gem::Specification.all = specs

      Gem.post_reset do
        Gem::Specification.all = specs
      end

      redefine_method((class << Gem; self; end), :finish_resolve) do |*|
        []
      end
    end

    def fetch_specs(remote, name)
      path = remote.uri.to_s + "#{name}.#{Gem.marshal_version}.gz"
      fetcher = gem_remote_fetcher
      fetcher.headers = { "X-Gemfile-Source" => remote.original_uri.to_s } if remote.original_uri
      string = fetcher.fetch_path(path)
      Bundler.load_marshal(string)
    rescue Gem::RemoteFetcher::FetchError => e
      # it's okay for prerelease to fail
      raise e unless name == "prerelease_specs"
    end

    def fetch_all_remote_specs(remote)
      specs = fetch_specs(remote, "specs")
      pres = fetch_specs(remote, "prerelease_specs") || []

      specs.concat(pres)
    end

    def download_gem(spec, uri, path)
      uri = Bundler.settings.mirror_for(uri)
      fetcher = gem_remote_fetcher
      fetcher.headers = { "X-Gemfile-Source" => spec.remote.original_uri.to_s } if spec.remote.original_uri
      Bundler::Retry.new("download gem from #{uri}").attempts do
        fetcher.download(spec, uri, path)
      end
    end

    def gem_remote_fetcher
      require "resolv"
      proxy = configuration[:http_proxy]
      dns = Resolv::DNS.new
      Gem::RemoteFetcher.new(proxy, dns)
    end

    def gem_from_path(path, policy = nil)
      require "rubygems/package"
      p = Gem::Package.new(path)
      p.security_policy = policy if policy
      p
    end

    def build(spec, skip_validation = false)
      require "rubygems/package"
      Gem::Package.build(spec, skip_validation)
    end

    def repository_subdirectories
      Gem::REPOSITORY_SUBDIRECTORIES
    end

    def install_with_build_args(args)
      yield
    end

    def path_separator
      Gem.path_separator
    end

    def all_specs
      require_relative "remote_specification"
      Gem::Specification.stubs.map do |stub|
        StubSpecification.from_stub(stub)
      end
    end

    def backport_ext_builder_monitor
      # So we can avoid requiring "rubygems/ext" in its entirety
      Gem.module_eval <<-RB, __FILE__, __LINE__ + 1
        module Ext
        end
      RB

      require "rubygems/ext/builder"

      Gem::Ext::Builder.class_eval do
        unless const_defined?(:CHDIR_MONITOR)
          const_set(:CHDIR_MONITOR, EXT_LOCK)
        end

        remove_const(:CHDIR_MUTEX) if const_defined?(:CHDIR_MUTEX)
        const_set(:CHDIR_MUTEX, const_get(:CHDIR_MONITOR))
      end
    end

    def find_name(name)
      Gem::Specification.stubs_for(name).map(&:to_spec)
    end

    if Gem::Specification.respond_to?(:default_stubs)
      def default_stubs
        Gem::Specification.default_stubs("*.gemspec")
      end
    else
      def default_stubs
        Gem::Specification.send(:default_stubs, "*.gemspec")
      end
    end

    def use_gemdeps(gemfile)
      ENV["BUNDLE_GEMFILE"] ||= File.expand_path(gemfile)
      require_relative "gemdeps"
      runtime = Bundler.setup
      activated_spec_names = runtime.requested_specs.map(&:to_spec).sort_by(&:name)
      [Gemdeps.new(runtime), activated_spec_names]
    end
  end

  def self.rubygems
    @rubygems ||= RubygemsIntegration.new
  end
end