[rubygems/rubygems] Raise an error in frozen mode if CHECKSUMS entries are missing

https://github.com/rubygems/rubygems/commit/054a0cd76c

lib/bundler/checksum.rb

@@ -201,9 +201,11 @@ module Bundler
         end
       end
 
-      def register(spec, checksum)
-        return unless checksum
+      def missing?(spec)
+        @store[spec.lock_name].nil?
+      end
 
+      def register(spec, checksum)
         register_checksum(spec.lock_name, checksum)
       end
 
@@ -218,7 +220,7 @@ module Bundler
       def to_lock(spec)
         lock_name = spec.lock_name
         checksums = @store[lock_name]
-        if checksums
+        if checksums&.any?
           "#{lock_name} #{checksums.values.map(&:to_lock).sort.join(",")}"
         else
           lock_name
@@ -229,11 +231,15 @@ module Bundler
 
       def register_checksum(lock_name, checksum)
         @store_mutex.synchronize do
-          existing = fetch_checksum(lock_name, checksum.algo)
-          if existing
-            merge_checksum(lock_name, checksum, existing)
+          if checksum
+            existing = fetch_checksum(lock_name, checksum.algo)
+            if existing
+              merge_checksum(lock_name, checksum, existing)
+            else
+              store_checksum(lock_name, checksum)
+            end
           else
-            store_checksum(lock_name, checksum)
+            init_checksum(lock_name)
           end
         end
       end
@@ -243,7 +249,11 @@ module Bundler
       end
 
       def store_checksum(lock_name, checksum)
-        (@store[lock_name] ||= {})[checksum.algo] = checksum
+        init_checksum(lock_name)[checksum.algo] = checksum
+      end
+
+      def init_checksum(lock_name)
+        @store[lock_name] ||= {}
       end
 
       def fetch_checksum(lock_name, algo)

lib/bundler/definition.rb

@@ -147,8 +147,8 @@ module Bundler
 
       @current_platform_missing = add_current_platform unless Bundler.frozen_bundle?
 
-      @path_changes = converge_paths
       @source_changes = converge_sources
+      @path_changes = converge_paths
 
       if conservative
         @gems_to_unlock = @explicit_unlocks.any? ? @explicit_unlocks : @dependencies.map(&:name)
@@ -563,6 +563,7 @@ module Bundler
         @local_changes ||
         @missing_lockfile_dep ||
         @unlocking_bundler ||
+        @locked_spec_with_missing_checksums ||
         @locked_spec_with_missing_deps ||
         @locked_spec_with_invalid_deps
     end
@@ -815,6 +816,7 @@ module Bundler
         [@local_changes, "the gemspecs for git local gems changed"],
         [@missing_lockfile_dep, "your lockfile is missing \"#{@missing_lockfile_dep}\""],
         [@unlocking_bundler, "an update to the version of Bundler itself was requested"],
+        [@locked_spec_with_missing_checksums, "your lockfile is missing a CHECKSUMS entry for \"#{@locked_spec_with_missing_checksums}\""],
         [@locked_spec_with_missing_deps, "your lockfile includes \"#{@locked_spec_with_missing_deps}\" but not some of its dependencies"],
         [@locked_spec_with_invalid_deps, "your lockfile does not satisfy dependencies of \"#{@locked_spec_with_invalid_deps}\""],
       ].select(&:first).map(&:last).join(", ")
@@ -873,21 +875,27 @@ module Bundler
     def check_lockfile
       @locked_spec_with_invalid_deps = nil
       @locked_spec_with_missing_deps = nil
+      @locked_spec_with_missing_checksums = nil
 
-      missing = []
+      missing_deps = []
+      missing_checksums = []
       invalid = []
 
       @locked_specs.each do |s|
+        missing_checksums << s if @locked_checksums && s.source.checksum_store.missing?(s)
+
         validation = @locked_specs.validate_deps(s)
 
-        missing << s if validation == :missing
+        missing_deps << s if validation == :missing
         invalid << s if validation == :invalid
       end
 
-      if missing.any?
-        @locked_specs.delete(missing)
+      @locked_spec_with_missing_checksums = missing_checksums.first.name if missing_checksums.any?
 
-        @locked_spec_with_missing_deps = missing.first.name
+      if missing_deps.any?
+        @locked_specs.delete(missing_deps)
+
+        @locked_spec_with_missing_deps = missing_deps.first.name
       end
 
       if invalid.any?

lib/bundler/lockfile_parser.rb

@@ -239,7 +239,6 @@ module Bundler
       spaces = $1
       return unless spaces.size == 2
       checksums = $6
-      return unless checksums
       name = $2
       version = $3
       platform = $4
@@ -249,10 +248,14 @@ module Bundler
       full_name = Gem::NameTuple.new(name, version, platform).full_name
       return unless spec = @specs[full_name]
 
-      checksums.split(",") do |lock_checksum|
-        column = line.index(lock_checksum) + 1
-        checksum = Checksum.from_lock(lock_checksum, "#{@lockfile_path}:#{@pos.line}:#{column}")
-        spec.source.checksum_store.register(spec, checksum)
+      if checksums
+        checksums.split(",") do |lock_checksum|
+          column = line.index(lock_checksum) + 1
+          checksum = Checksum.from_lock(lock_checksum, "#{@lockfile_path}:#{@pos.line}:#{column}")
+          spec.source.checksum_store.register(spec, checksum)
+        end
+      else
+        spec.source.checksum_store.register(spec, nil)
       end
     end
 

lib/bundler/source/gemspec.rb

@@ -4,6 +4,7 @@ module Bundler
   class Source
     class Gemspec < Path
       attr_reader :gemspec
+      attr_writer :checksum_store
 
       def initialize(options)
         super

lib/bundler/source_list.rb

@@ -183,9 +183,7 @@ module Bundler
       end
 
       path = @path_sources.map do |source|
-        next source if source.is_a?(Source::Gemspec)
-
-        replace_source(replacement_sources, source)
+        replace_path_source(replacement_sources, source)
       end
 
       [rubygems, path, git, plugin]
@@ -201,6 +199,8 @@ module Bundler
         replacement_source.remotes = gemfile_source.remotes
 
         yield replacement_source if block_given?
+
+        replacement_source
       end
     end
 
@@ -208,11 +208,22 @@ module Bundler
       replacement_source = replacement_sources.find {|s| s == gemfile_source }
       return gemfile_source unless replacement_source
 
-      yield replacement_source if block_given?
+      replacement_source = yield(replacement_source) if block_given?
 
       replacement_source
     end
 
+    def replace_path_source(replacement_sources, gemfile_source)
+      replace_source(replacement_sources, gemfile_source) do |replacement_source|
+        if gemfile_source.is_a?(Source::Gemspec)
+          gemfile_source.checksum_store = replacement_source.checksum_store
+          gemfile_source
+        else
+          replacement_source
+        end
+      end
+    end
+
     def different_sources?(lock_sources, replacement_sources)
       !equivalent_sources?(lock_sources, replacement_sources)
     end

spec/bundler/install/gemfile/sources_spec.rb

@@ -1221,7 +1221,7 @@ RSpec.describe "bundle install with gems on multiple sources" do
 
           DEPENDENCIES
             myrack!
-          #{checksums_section}
+
           BUNDLED WITH
              #{Bundler::VERSION}
         L

spec/bundler/lock/lockfile_spec.rb

@@ -1613,6 +1613,39 @@ RSpec.describe "the lockfile format" do
     expect(the_bundle).not_to include_gems "myrack_middleware 1.0"
   end
 
+  it "raises a clear error when frozen mode is set and lockfile is missing entries in CHECKSUMS section, and does not install any gems" do
+    lockfile <<-L
+      GEM
+        remote: https://gem.repo2/
+        specs:
+          myrack_middleware (1.0)
+
+      PLATFORMS
+        #{lockfile_platforms}
+
+      DEPENDENCIES
+        myrack_middleware
+
+      CHECKSUMS
+
+      BUNDLED WITH
+         #{Bundler::VERSION}
+    L
+
+    install_gemfile <<-G, env: { "BUNDLE_FROZEN" => "true" }, raise_on_error: false
+      source "https://gem.repo2"
+      gem "myrack_middleware"
+    G
+
+    expect(err).to eq <<~L.strip
+      Your lockfile is missing a checksums entry for \"myrack_middleware\", but can't be updated because frozen mode is set
+
+      Run `bundle install` elsewhere and add the updated Gemfile.lock to version control.
+    L
+
+    expect(the_bundle).not_to include_gems "myrack_middleware 1.0"
+  end
+
   it "automatically fixes the lockfile when it's missing deps, they conflict with other locked deps, but conflicts are fixable" do
     build_repo4 do
       build_gem "other_dep", "0.9"