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#
# Copyright:: Copyright 2020, Chef Software Inc.
# License:: Apache License, Version 2.0
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
class Chef
module Mixin
# a collection of methods for validating cron times. Used in the various cron-like resources
module CronValidations
# validate a provided value is between two other provided values
# we also allow * as a valid input
# @param spec the value to validate
# @param min the lowest value allowed
# @param max the highest value allowed
# @return [Boolean] valid or not?
def self.validate_numeric(spec, min, max)
return true if spec == "*"
if spec.respond_to? :to_int
return spec >= min && spec <= max
end
# Lists of invidual values, ranges, and step values all share the validity range for type
spec.split(%r{\/|-|,}).each do |x|
next if x == "*"
return false unless x =~ /^\d+$/
x = x.to_i
return false unless x >= min && x <= max
end
true
end
# validate the provided month value to be jan - dec, 1 - 12, or *
# @param spec the value to validate
# @return [Boolean] valid or not?
def self.validate_month(spec)
return true if spec == "*"
if spec.respond_to? :to_int
validate_numeric(spec, 1, 12)
elsif spec.respond_to? :to_str
# Named abbreviations are permitted but not as part of a range or with stepping
return true if %w{jan feb mar apr may jun jul aug sep oct nov dec}.include? spec.downcase
# 1-12 are legal for months
validate_numeric(spec, 1, 12)
else
false
end
end
# validate the provided day of the week is sun-sat, 0-7, or *
# @param spec the value to validate
# @return [Boolean] valid or not?
def self.validate_dow(spec)
spec == "*" ||
validate_numeric(spec, 0, 7) ||
%w{sun mon tue wed thu fri sat}.include?(String(spec).downcase)
end
end
end
end
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