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require_relative "user_interaction"
class Gem::SpecificationPolicy
include Gem::UserInteraction
VALID_NAME_PATTERN = /\A[a-zA-Z0-9\.\-\_]+\z/.freeze # :nodoc:
SPECIAL_CHARACTERS = /\A[#{Regexp.escape('.-_')}]+/.freeze # :nodoc:
VALID_URI_PATTERN = %r{\Ahttps?:\/\/([^\s:@]+:[^\s:@]*@)?[A-Za-z\d\-]+(\.[A-Za-z\d\-]+)+\.?(:\d{1,5})?([\/?]\S*)?\z}.freeze # :nodoc:
METADATA_LINK_KEYS = %w[
bug_tracker_uri
changelog_uri
documentation_uri
homepage_uri
mailing_list_uri
source_code_uri
wiki_uri
funding_uri
].freeze # :nodoc:
def initialize(specification)
@warnings = 0
@specification = specification
end
##
# If set to true, run packaging-specific checks, as well.
attr_accessor :packaging
##
# 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.
def validate(strict = false)
validate_required!
validate_optional(strict) if packaging || strict
true
end
##
# 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.
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
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
##
# Implementation for Specification#validate_metadata
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
##
# Checks that no duplicate dependencies are specified.
def validate_duplicate_dependencies # :nodoc:
# NOTE: see REFACTOR note in Gem::Dependency about types - this might be brittle
seen = Gem::Dependency::TYPES.inject({}) {|types, type| types.merge({ type => {} }) }
error_messages = []
@specification.dependencies.each do |dep|
if prev = seen[dep.type][dep.name]
error_messages << <<-MESSAGE
duplicate dependency on #{dep}, (#{prev.requirement}) use:
add_#{dep.type}_dependency '#{dep.name}', '#{dep.requirement}', '#{prev.requirement}'
MESSAGE
end
seen[dep.type][dep.name] = dep
end
if error_messages.any?
error error_messages.join
end
end
##
# Checks that dependencies use requirements as we recommend. Warnings are
# issued when dependencies are open-ended or overly strict for semantic
# versioning.
def validate_dependencies # :nodoc:
warning_messages = []
@specification.dependencies.each do |dep|
prerelease_dep = dep.requirements_list.any? do |req|
Gem::Requirement.new(req).prerelease?
end
warning_messages << "prerelease dependency on #{dep} is not recommended" if
prerelease_dep && !@specification.version.prerelease?
open_ended = dep.requirement.requirements.all? do |op, version|
!version.prerelease? && (op == ">" || op == ">=")
end
if open_ended
op, dep_version = dep.requirement.requirements.first
segments = dep_version.segments
base = segments.first 2
recommendation = if (op == ">" || op == ">=") && segments == [0]
" use a bounded requirement, such as '~> x.y'"
else
bugfix = if op == ">"
", '> #{dep_version}'"
elsif op == ">=" && base != segments
", '>= #{dep_version}'"
end
" if #{dep.name} is semantically versioned, use:\n" \
" add_#{dep.type}_dependency '#{dep.name}', '~> #{base.join '.'}'#{bugfix}"
end
warning_messages << ["open-ended dependency on #{dep} is not recommended", recommendation].join("\n") + "\n"
end
end
if warning_messages.any?
warning_messages.each {|warning_message| warning warning_message }
end
end
##
# Issues a warning for each file to be packaged which is world-readable.
#
# Implementation for Specification#validate_permissions
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
private
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
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
def validate_required_attributes
Gem::Specification.required_attributes.each do |symbol|
unless @specification.send symbol
error "missing value for attribute #{symbol}"
end
end
end
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
def validate_require_paths
return unless @specification.raw_require_paths.empty?
error "specification must have at least one require_path"
end
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
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
def validate_specification_version
return if @specification.specification_version.is_a?(Integer)
error "specification_version must be an Integer (did you mean version?)"
end
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
def validate_array_attributes
Gem::Specification.array_attributes.each do |field|
validate_array_attribute(field)
end
end
def validate_array_attribute(field)
val = @specification.send(field)
klass = case field
when :dependencies then
Gem::Dependency
else
String
end
unless Array === val && val.all? {|x| x.kind_of?(klass) }
error "#{field} must be an Array of #{klass}"
end
end
def validate_authors_field
return unless @specification.authors.empty?
error "authors may not be empty"
end
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
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
LAZY = '"FIxxxXME" or "TOxxxDO"'.gsub(/xxx/, "")
LAZY_PATTERN = /\AFI XME|\ATO DO/x.freeze
HOMEPAGE_URI_PATTERN = /\A[a-z][a-z\d+.-]*:/i.freeze
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 && !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
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
def validate_attribute_present(attribute)
value = @specification.send attribute
warning("no #{attribute} specified") if value.nil? || value.empty?
end
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
def validate_removed_attributes # :nodoc:
@specification.removed_method_calls.each do |attr|
warning("#{attr} is deprecated and ignored. Please remove this from your gemspec to ensure that your gem continues to build in the future.")
end
end
def validate_extensions # :nodoc:
require_relative "ext"
builder = Gem::Ext::Builder.new(@specification)
rake_extension = @specification.extensions.any? {|s| builder.builder_for(s) == Gem::Ext::RakeBuilder }
rake_dependency = @specification.dependencies.any? {|d| d.name == "rake" }
warning <<-WARNING if rake_extension && !rake_dependency
You have specified rake based extension, but rake is not added as dependency. It is recommended to add rake as a dependency in gemspec since there's no guarantee rake will be already installed.
WARNING
end
def warning(statement) # :nodoc:
@warnings += 1
alert_warning statement
end
def error(statement) # :nodoc:
raise Gem::InvalidSpecificationException, statement
ensure
alert_warning help_text
end
def help_text # :nodoc:
"See https://guides.rubygems.org/specification-reference/ for help"
end
end