# class Gem::SpecificationPolicy

### Constants

HOMEPAGE_URI_PATTERN
LAZY
LAZY_PATTERN

### Attributes

packaging[RW]

If set to true, run packaging-specific checks, as well.

### Public Class Methods

new(specification) click to toggle source

    # File lib/rubygems/specification_policy.rb, line 23
    def initialize(specification)
      @warnings = 0

      @specification = specification
    end

### Public Instance Methods

validate(strict = false) click to toggle source

Does a sanity check on the specification.

Raises InvalidSpecificationException if the spec does not pass the checks.

It also performs some validations that do not raise but print warning messages instead.

    # File lib/rubygems/specification_policy.rb, line 43
    def validate(strict = false)
      validate_required!

      validate_optional(strict) if packaging || strict

      true
    end

validate_metadata() click to toggle source

Implementation for Specification#validate_metadata

    # File lib/rubygems/specification_policy.rb, line 119
    def validate_metadata
      metadata = @specification.metadata

      unless Hash === metadata
        error 'metadata must be a hash'
      end

      metadata.each do |key, value|
        entry = "metadata['#{key}']"
        if !key.kind_of?(String)
          error "metadata keys must be a String"
        end

        if key.size > 128
          error "metadata key is too large (#{key.size} > 128)"
        end

        if !value.kind_of?(String)
          error "#{entry} value must be a String"
        end

        if value.size > 1024
          error "#{entry} value is too large (#{value.size} > 1024)"
        end

        if METADATA_LINK_KEYS.include? key
          if value !~ VALID_URI_PATTERN
            error "#{entry} has invalid link: #{value.inspect}"
          end
        end
      end
    end

validate_optional(strict) click to toggle source

    # File lib/rubygems/specification_policy.rb, line 94
    def validate_optional(strict)
      validate_licenses

      validate_permissions

      validate_values

      validate_dependencies

      validate_extensions

      validate_removed_attributes

      if @warnings > 0
        if strict
          error "specification has warnings"
        else
          alert_warning help_text
        end
      end
    end

validate_permissions() click to toggle source

Issues a warning for each file to be packaged which is world-readable.

Implementation for Specification#validate_permissions

    # File lib/rubygems/specification_policy.rb, line 227
    def validate_permissions
      return if Gem.win_platform?

      @specification.files.each do |file|
        next unless File.file?(file)
        next if File.stat(file).mode & 0444 == 0444
        warning "#{file} is not world-readable"
      end

      @specification.executables.each do |name|
        exec = File.join @specification.bindir, name
        next unless File.file?(exec)
        next if File.stat(exec).executable?
        warning "#{exec} is not executable"
      end
    end

validate_required!() click to toggle source

Does a sanity check on the specification.

Raises InvalidSpecificationException if the spec does not pass the checks.

Only runs checks that are considered necessary for the specification to be functional.

    # File lib/rubygems/specification_policy.rb, line 60
    def validate_required!
      validate_nil_attributes

      validate_rubygems_version

      validate_required_attributes

      validate_name

      validate_require_paths

      @specification.keep_only_files_and_directories

      validate_non_files

      validate_self_inclusion_in_files_list

      validate_specification_version

      validate_platform

      validate_array_attributes

      validate_authors_field

      validate_metadata

      validate_licenses_length

      validate_lazy_metadata

      validate_duplicate_dependencies
    end

### Private Instance Methods

validate_array_attribute(field) click to toggle source

    # File lib/rubygems/specification_policy.rb, line 332
    def validate_array_attribute(field)
      val = @specification.send(field)
      klass = case field
              when :dependencies then
                Gem::Dependency
              else
                String
              end

      unless Array === val and val.all? {|x| x.kind_of?(klass) }
        error "#{field} must be an Array of #{klass}"
      end
    end

validate_array_attributes() click to toggle source

    # File lib/rubygems/specification_policy.rb, line 326
    def validate_array_attributes
      Gem::Specification.array_attributes.each do |field|
        validate_array_attribute(field)
      end
    end

validate_attribute_present(attribute) click to toggle source

    # File lib/rubygems/specification_policy.rb, line 441
    def validate_attribute_present(attribute)
      value = @specification.send attribute
      warning("no #{attribute} specified") if value.nil? || value.empty?
    end

validate_authors_field() click to toggle source

    # File lib/rubygems/specification_policy.rb, line 346
    def validate_authors_field
      return unless @specification.authors.empty?

      error "authors may not be empty"
    end

validate_lazy_metadata() click to toggle source

    # File lib/rubygems/specification_policy.rb, line 387
    def validate_lazy_metadata
      unless @specification.authors.grep(LAZY_PATTERN).empty?
        error "#{LAZY} is not an author"
      end

      unless Array(@specification.email).grep(LAZY_PATTERN).empty?
        error "#{LAZY} is not an email"
      end

      if @specification.description =~ LAZY_PATTERN
        error "#{LAZY} is not a description"
      end

      if @specification.summary =~ LAZY_PATTERN
        error "#{LAZY} is not a summary"
      end

      homepage = @specification.homepage

      # Make sure a homepage is valid HTTP/HTTPS URI
      if homepage and not homepage.empty?
        require 'uri'
        begin
          homepage_uri = URI.parse(homepage)
          unless [URI::HTTP, URI::HTTPS].member? homepage_uri.class
            error "\"#{homepage}\" is not a valid HTTP URI"
          end
        rescue URI::InvalidURIError
          error "\"#{homepage}\" is not a valid HTTP URI"
        end
      end
    end

validate_licenses() click to toggle source

    # File lib/rubygems/specification_policy.rb, line 362
      def validate_licenses
        licenses = @specification.licenses

        licenses.each do |license|
          if !Gem::Licenses.match?(license)
            suggestions = Gem::Licenses.suggestions(license)
            message = <<-WARNING
    license value '#{license}' is invalid.  Use a license identifier from
    http://spdx.org/licenses or '#{Gem::Licenses::NONSTANDARD}' for a nonstandard license.
            WARNING
            message += "Did you mean #{suggestions.map {|s| "'#{s}'" }.join(', ')}?\n" unless suggestions.nil?
            warning(message)
          end
        end

        warning <<-WARNING if licenses.empty?
    licenses is empty, but is recommended.  Use a license identifier from
    http://spdx.org/licenses or '#{Gem::Licenses::NONSTANDARD}' for a nonstandard license.
        WARNING
      end

validate_licenses_length() click to toggle source

    # File lib/rubygems/specification_policy.rb, line 352
    def validate_licenses_length
      licenses = @specification.licenses

      licenses.each do |license|
        if license.length > 64
          error "each license must be 64 characters or less"
        end
      end
    end

validate_name() click to toggle source

    # File lib/rubygems/specification_policy.rb, line 272
    def validate_name
      name = @specification.name

      if !name.is_a?(String)
        error "invalid value for attribute name: \"#{name.inspect}\" must be a string"
      elsif name !~ /[a-zA-Z]/
        error "invalid value for attribute name: #{name.dump} must include at least one letter"
      elsif name !~ VALID_NAME_PATTERN
        error "invalid value for attribute name: #{name.dump} can only include letters, numbers, dashes, and underscores"
      elsif name =~ SPECIAL_CHARACTERS
        error "invalid value for attribute name: #{name.dump} can not begin with a period, dash, or underscore"
      end
    end

validate_nil_attributes() click to toggle source

    # File lib/rubygems/specification_policy.rb, line 246
    def validate_nil_attributes
      nil_attributes = Gem::Specification.non_nil_attributes.select do |attrname|
        @specification.instance_variable_get("@#{attrname}").nil?
      end
      return if nil_attributes.empty?
      error "#{nil_attributes.join ', '} must not be nil"
    end

validate_non_files() click to toggle source

    # File lib/rubygems/specification_policy.rb, line 292
    def validate_non_files
      return unless packaging

      non_files = @specification.files.reject {|x| File.file?(x) || File.symlink?(x) }

      unless non_files.empty?
        error "[\"#{non_files.join "\", \""}\"] are not files"
      end
    end

validate_platform() click to toggle source

    # File lib/rubygems/specification_policy.rb, line 316
    def validate_platform
      platform = @specification.platform

      case platform
      when Gem::Platform, Gem::Platform::RUBY # ok
      else
        error "invalid platform #{platform.inspect}, see Gem::Platform"
      end
    end

validate_require_paths() click to toggle source

    # File lib/rubygems/specification_policy.rb, line 286
    def validate_require_paths
      return unless @specification.raw_require_paths.empty?

      error 'specification must have at least one require_path'
    end

validate_required_attributes() click to toggle source

    # File lib/rubygems/specification_policy.rb, line 264
    def validate_required_attributes
      Gem::Specification.required_attributes.each do |symbol|
        unless @specification.send symbol
          error "missing value for attribute #{symbol}"
        end
      end
    end

validate_rubygems_version() click to toggle source

    # File lib/rubygems/specification_policy.rb, line 254
    def validate_rubygems_version
      return unless packaging

      rubygems_version = @specification.rubygems_version

      return if rubygems_version == Gem::VERSION

      error "expected RubyGems version #{Gem::VERSION}, was #{rubygems_version}"
    end

validate_self_inclusion_in_files_list() click to toggle source

    # File lib/rubygems/specification_policy.rb, line 302
    def validate_self_inclusion_in_files_list
      file_name = @specification.file_name

      return unless @specification.files.include?(file_name)

      error "#{@specification.full_name} contains itself (#{file_name}), check your files list"
    end

validate_shebang_line_in(executable) click to toggle source

    # File lib/rubygems/specification_policy.rb, line 446
    def validate_shebang_line_in(executable)
      executable_path = File.join(@specification.bindir, executable)
      return if File.read(executable_path, 2) == '#!'

      warning "#{executable_path} is missing #! line"
    end

validate_specification_version() click to toggle source

    # File lib/rubygems/specification_policy.rb, line 310
    def validate_specification_version
      return if @specification.specification_version.is_a?(Integer)

      error 'specification_version must be an Integer (did you mean version?)'
    end

validate_values() click to toggle source

    # File lib/rubygems/specification_policy.rb, line 420
    def validate_values
      %w[author homepage summary files].each do |attribute|
        validate_attribute_present(attribute)
      end

      if @specification.description == @specification.summary
        warning "description and summary are identical"
      end

      # TODO: raise at some given date
      warning "deprecated autorequire specified" if @specification.autorequire

      @specification.executables.each do |executable|
        validate_shebang_line_in(executable)
      end

      @specification.files.select {|f| File.symlink?(f) }.each do |file|
        warning "#{file} is a symlink, which is not supported on all platforms"
      end
    end