1 files changed, 49 insertions, 25 deletions

diff --git a/lib/bundler/definition.rb b/lib/bundler/definition.rb
index 3c25149d33..9178f0126f 100644
--- a/lib/bundler/definition.rb
+++ b/lib/bundler/definition.rb
@@ -106,6 +106,19 @@ module Bundler
         @locked_platforms = []
       end
 
+      @locked_gem_sources = @locked_sources.select {|s| s.is_a?(Source::Rubygems) }
+      @disable_multisource = !Bundler.frozen_bundle? || @locked_gem_sources.none? {|s| s.remotes.size > 1 }
+
+      unless @disable_multisource
+        msg = "Your lockfile contains a single rubygems source section with multiple remotes, which is insecure. " \
+          "You should regenerate your lockfile in a non frozen environment."
+
+        Bundler::SharedHelpers.major_deprecation 2, msg
+
+        @sources.allow_multisource!
+        @locked_gem_sources.each(&:allow_multisource!)
+      end
+
       @unlock[:gems] ||= []
       @unlock[:sources] ||= []
       @unlock[:ruby] ||= if @ruby_version && locked_ruby_version_object
@@ -145,6 +158,14 @@ module Bundler
       end
     end
 
+    def disable_multisource?
+      @disable_multisource
+    end
+
+    def allow_multisource!
+      @disable_multisource = false
+    end
+
     def resolve_with_cache!
       raise "Specs already loaded" if @specs
       sources.cached!
@@ -264,7 +285,7 @@ module Bundler
           # Run a resolve against the locally available gems
           Bundler.ui.debug("Found changes from the lockfile, re-resolving dependencies because #{change_reason}")
           expanded_dependencies = expand_dependencies(dependencies + metadata_dependencies, @remote)
-          Resolver.resolve(expanded_dependencies, index, source_requirements, last_resolve, gem_version_promoter, additional_base_requirements_for_resolve, platforms)
+          Resolver.resolve(expanded_dependencies, source_requirements, last_resolve, gem_version_promoter, additional_base_requirements_for_resolve, platforms)
         end
       end
     end
@@ -530,6 +551,9 @@ module Bundler
     attr_reader :sources
     private :sources
 
+    attr_reader :locked_gem_sources
+    private :locked_gem_sources
+
     def nothing_changed?
       !@source_changes && !@dependency_changes && !@new_platform && !@path_changes && !@local_changes && !@locked_specs_incomplete_for_platform
     end
@@ -654,21 +678,20 @@ module Bundler
     end
 
     def converge_rubygems_sources
-      return false if Bundler.feature_flag.disable_multisource?
+      return false if disable_multisource?
 
-      changes = false
+      return false if locked_gem_sources.empty?
 
-      # Get the RubyGems sources from the Gemfile.lock
-      locked_gem_sources = @locked_sources.select {|s| s.is_a?(Source::Rubygems) }
       # Get the RubyGems remotes from the Gemfile
       actual_remotes = sources.rubygems_remotes
+      return false if actual_remotes.empty?
+
+      changes = false
 
       # If there is a RubyGems source in both
-      if !locked_gem_sources.empty? && !actual_remotes.empty?
-        locked_gem_sources.each do |locked_gem|
-          # Merge the remotes from the Gemfile into the Gemfile.lock
-          changes |= locked_gem.replace_remotes(actual_remotes, Bundler.settings[:allow_deployment_source_credential_changes])
-        end
+      locked_gem_sources.each do |locked_gem|
+        # Merge the remotes from the Gemfile into the Gemfile.lock
+        changes |= locked_gem.replace_remotes(actual_remotes, Bundler.settings[:allow_deployment_source_credential_changes])
       end
 
       changes
@@ -893,30 +916,18 @@ module Bundler
       # Record the specs available in each gem's source, so that those
       # specs will be available later when the resolver knows where to
       # look for that gemspec (or its dependencies)
-      default = sources.default_source
-      source_requirements = { :default => default }
-      default = nil unless Bundler.feature_flag.disable_multisource?
-      dependencies.each do |dep|
-        next unless source = dep.source || default
-        source_requirements[dep.name] = source
-      end
+      source_requirements = { :default => sources.default_source }.merge(dependency_source_requirements)
       metadata_dependencies.each do |dep|
         source_requirements[dep.name] = sources.metadata_source
       end
+      source_requirements[:global] = index unless disable_multisource?
       source_requirements[:default_bundler] = source_requirements["bundler"] || source_requirements[:default]
       source_requirements["bundler"] = sources.metadata_source # needs to come last to override
       source_requirements
     end
 
     def pinned_spec_names(skip = nil)
-      pinned_names = []
-      default = Bundler.feature_flag.disable_multisource? && sources.default_source
-      @dependencies.each do |dep|
-        next unless dep_source = dep.source || default
-        next if dep_source == skip
-        pinned_names << dep.name
-      end
-      pinned_names
+      dependency_source_requirements.reject {|_, source| source == skip }.keys
     end
 
     def requested_groups
@@ -973,5 +984,18 @@ module Bundler
 
       Bundler.settings[:allow_deployment_source_credential_changes] && source.equivalent_remotes?(sources.rubygems_remotes)
     end
+
+    def dependency_source_requirements
+      @dependency_source_requirements ||= begin
+        source_requirements = {}
+        default = disable_multisource? && sources.default_source
+        dependencies.each do |dep|
+          dep_source = dep.source || default
+          next unless dep_source
+          source_requirements[dep.name] = dep_source
+        end
+        source_requirements
+      end
+    end
   end
 end