Class: Gem::Guardian::CLI::LockfileDataView

Inherits:
Data
  • Object
show all
Defined in:
lib/gem/guardian/cli.rb

Overview

Lightweight lockfile data adapter used when a user verifies only a subset of gems from a Bundler lockfile.

LockfileParser returns the full dependency graph and all parsed checksum entries. When the CLI receives both +--lockfile+ and explicit +GEM:VERSION[:PLATFORM]+ arguments, this view narrows that data to the requested dependencies while preserving the same reader methods consumed by Verifier, ReportBuilder, and ResultPrinter.

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#checksums ⇒ Object (readonly)

Returns the value of attribute checksums

Returns:

  • (Object) —

    the current value of checksums



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# File 'lib/gem/guardian/cli.rb', line 29

LockfileDataView = Data.define(:dependencies, :checksums, :checksums_section_present) do
  # Looks up a checksum for a dependency and algorithm.
  #
  # @param dependency [Dependency] dependency to look up
  # @param algorithm [String] checksum algorithm name, currently usually
  #   +"sha256"+
  # @return [String, nil] checksum digest when present, otherwise +nil+
  def checksum_for(dependency, algorithm = "sha256")
    checksums.fetch(dependency, {}).fetch(algorithm, nil)
  end

  # Returns only SHA256 checksums from the filtered lockfile data.
  #
  # @return [Hash{Dependency => String}] selected dependencies mapped to
  #   their SHA256 digest
  def sha256_checksums
    checksums.each_with_object({}) do |(dependency, algorithms), memo|
      digest = algorithms["sha256"]
      memo[dependency] = digest if digest
    end
  end

  # Lists selected dependencies that do not have SHA256 lockfile coverage.
  #
  # @return [Array<Dependency>] dependencies missing a SHA256 checksum in
  #   the lockfile view
  def missing_checksum_dependencies
    dependencies.reject { |dependency| sha256_checksums.key?(dependency) }
  end

  # Indicates whether the original lockfile contained a +CHECKSUMS+
  # section.
  #
  # @return [Boolean] +true+ when the source lockfile had checksum metadata
  def checksums_present?
    checksums_section_present
  end
end

#checksums_section_present ⇒ Object (readonly)

Returns the value of attribute checksums_section_present

Returns:

  • (Object) —

    the current value of checksums_section_present



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# File 'lib/gem/guardian/cli.rb', line 29

LockfileDataView = Data.define(:dependencies, :checksums, :checksums_section_present) do
  # Looks up a checksum for a dependency and algorithm.
  #
  # @param dependency [Dependency] dependency to look up
  # @param algorithm [String] checksum algorithm name, currently usually
  #   +"sha256"+
  # @return [String, nil] checksum digest when present, otherwise +nil+
  def checksum_for(dependency, algorithm = "sha256")
    checksums.fetch(dependency, {}).fetch(algorithm, nil)
  end

  # Returns only SHA256 checksums from the filtered lockfile data.
  #
  # @return [Hash{Dependency => String}] selected dependencies mapped to
  #   their SHA256 digest
  def sha256_checksums
    checksums.each_with_object({}) do |(dependency, algorithms), memo|
      digest = algorithms["sha256"]
      memo[dependency] = digest if digest
    end
  end

  # Lists selected dependencies that do not have SHA256 lockfile coverage.
  #
  # @return [Array<Dependency>] dependencies missing a SHA256 checksum in
  #   the lockfile view
  def missing_checksum_dependencies
    dependencies.reject { |dependency| sha256_checksums.key?(dependency) }
  end

  # Indicates whether the original lockfile contained a +CHECKSUMS+
  # section.
  #
  # @return [Boolean] +true+ when the source lockfile had checksum metadata
  def checksums_present?
    checksums_section_present
  end
end

#dependencies ⇒ Object (readonly)

Returns the value of attribute dependencies

Returns:

  • (Object) —

    the current value of dependencies



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# File 'lib/gem/guardian/cli.rb', line 29

LockfileDataView = Data.define(:dependencies, :checksums, :checksums_section_present) do
  # Looks up a checksum for a dependency and algorithm.
  #
  # @param dependency [Dependency] dependency to look up
  # @param algorithm [String] checksum algorithm name, currently usually
  #   +"sha256"+
  # @return [String, nil] checksum digest when present, otherwise +nil+
  def checksum_for(dependency, algorithm = "sha256")
    checksums.fetch(dependency, {}).fetch(algorithm, nil)
  end

  # Returns only SHA256 checksums from the filtered lockfile data.
  #
  # @return [Hash{Dependency => String}] selected dependencies mapped to
  #   their SHA256 digest
  def sha256_checksums
    checksums.each_with_object({}) do |(dependency, algorithms), memo|
      digest = algorithms["sha256"]
      memo[dependency] = digest if digest
    end
  end

  # Lists selected dependencies that do not have SHA256 lockfile coverage.
  #
  # @return [Array<Dependency>] dependencies missing a SHA256 checksum in
  #   the lockfile view
  def missing_checksum_dependencies
    dependencies.reject { |dependency| sha256_checksums.key?(dependency) }
  end

  # Indicates whether the original lockfile contained a +CHECKSUMS+
  # section.
  #
  # @return [Boolean] +true+ when the source lockfile had checksum metadata
  def checksums_present?
    checksums_section_present
  end
end

Instance Method Details

#checksum_for(dependency, algorithm = "sha256") ⇒ String?

Looks up a checksum for a dependency and algorithm.

Parameters:

  • dependency (Dependency) —

    dependency to look up

  • algorithm (String) (defaults to: "sha256") —

    checksum algorithm name, currently usually +"sha256"+

Returns:

  • (String, nil) —

    checksum digest when present, otherwise +nil+



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# File 'lib/gem/guardian/cli.rb', line 36

def checksum_for(dependency, algorithm = "sha256")
  checksums.fetch(dependency, {}).fetch(algorithm, nil)
end

#checksums_present? ⇒ Boolean

Indicates whether the original lockfile contained a +CHECKSUMS+ section.

Returns:

  • (Boolean) —

    +true+ when the source lockfile had checksum metadata



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# File 'lib/gem/guardian/cli.rb', line 63

def checksums_present?
  checksums_section_present
end

#missing_checksum_dependencies ⇒ Array<Dependency>

Lists selected dependencies that do not have SHA256 lockfile coverage.

Returns:

  • (Array<Dependency>) —

    dependencies missing a SHA256 checksum in the lockfile view



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# File 'lib/gem/guardian/cli.rb', line 55

def missing_checksum_dependencies
  dependencies.reject { |dependency| sha256_checksums.key?(dependency) }
end

#sha256_checksums ⇒ Hash{Dependency => String}

Returns only SHA256 checksums from the filtered lockfile data.

Returns:

  • (Hash{Dependency => String}) —

    selected dependencies mapped to their SHA256 digest



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# File 'lib/gem/guardian/cli.rb', line 44

def sha256_checksums
  checksums.each_with_object({}) do |(dependency, algorithms), memo|
    digest = algorithms["sha256"]
    memo[dependency] = digest if digest
  end
end