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module Gem
###
# This module is used for safely loading YAML specs from a gem. The
# `safe_load` method defined on this module is specifically designed for
# loading Gem specifications. For loading other YAML safely, please see
# Psych.safe_load
module SafeYAML
WHITELISTED_CLASSES = %w(
Symbol
Time
Date
Gem::Dependency
Gem::Platform
Gem::Requirement
Gem::Specification
Gem::Version
Gem::Version::Requirement
YAML::Syck::DefaultKey
Syck::DefaultKey
)
WHITELISTED_SYMBOLS = %w(
development
runtime
)
if ::YAML.respond_to? :safe_load
def self.safe_load input
::YAML.safe_load(input, WHITELISTED_CLASSES, WHITELISTED_SYMBOLS, true)
end
def self.load input
::YAML.safe_load(input, [::Symbol])
end
else
unless Gem::Deprecate.skip
warn "YAML safe loading is not available. Please upgrade psych to a version that supports safe loading (>= 2.0)."
end
def self.safe_load input, *args
::YAML.load input
end
def self.load input
::YAML.load input
end
end
end
end
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