inspec/lib/resources/json.rb
eramoto c7e87ca3e3 Unify method in which file content is read across all resources (#2359)
* Create file-check functionality into utility file

There are the similar issues as PR #2302. Almost resources return false
positives when a file does not exist or is not read.

* Replace to file-check functionality
* Fix dh_params and x509_certificate resources

If a file is empty, OpenSSL::PKey::DH and OpenSSL::X509::Certificate have
raised an exception and have skipped the inspection. Thus x509_certificate
and dh_params resources are not allowed to read a empty file.

* to_s of shadow expects filters is not nil
* Remove workaround of sshd_config

Removes the workaround of sshd_config since Travis CI fails due to a bug
of dev-sec/ssh-baseline and the PR #100 will fix it.

* Use init block variable in methods

Signed-off-by: ERAMOTO Masaya <eramoto.masaya@jp.fujitsu.com>
2018-03-22 08:25:45 -04:00

107 lines
3.3 KiB
Ruby

# encoding: utf-8
require 'utils/object_traversal'
require 'utils/file_reader'
module Inspec::Resources
class JsonConfig < Inspec.resource(1)
name 'json'
desc 'Use the json InSpec audit resource to test data in a JSON file.'
example "
describe json('policyfile.lock.json') do
its(['cookbook_locks','omnibus','version']) { should eq('2.2.0') }
end
describe json({ command: 'retrieve_data.py --json' }) do
its('state') { should eq('open') }
end
describe json({ content: '{\"item1\": { \"status\": \"available\" } }' }) do
its(['item1', 'status']) { should cmp 'available' }
end
"
include ObjectTraverser
include FileReader
# make params readable
attr_reader :params, :raw_content
def initialize(opts)
# pre-initialize @params to an empty hash. In the event that reading/parsing the data
# throws an exception, this allows the resource to still be called outside of a
# describe/test and not throw errors when a caller attempts to fetch a value from the params.
@params = {}
# load the raw content from the source, and then parse it
@raw_content = load_raw_content(opts)
@params = parse(@raw_content)
end
# Shorthand to retrieve a parameter name via `#its`.
# Example: describe json('file') { its('paramX') { should eq 'Y' } }
#
# @param [String] name name of the field to retrieve
# @return [Object] the value stored at this position
def method_missing(*keys)
# catch bahavior of rspec its implementation
# @see https://github.com/rspec/rspec-its/blob/master/lib/rspec/its.rb#L110
keys.shift if keys.is_a?(Array) && keys[0] == :[]
value(keys)
end
def value(key)
# uses ObjectTraverser.extract_value to walk the hash looking for the key,
# which may be an Array of keys for a nested Hash.
extract_value(key, params)
end
def to_s
"#{resource_base_name} #{@resource_name_supplement || 'content'}"
end
private
def parse(content)
require 'json'
JSON.parse(content)
rescue => e
raise Inspec::Exceptions::ResourceFailed, "Unable to parse JSON: #{e.message}"
end
def load_raw_content(opts)
# if the opts isn't a hash, we assume it's a path to a file
unless opts.is_a?(Hash)
@resource_name_supplement = opts
return load_raw_from_file(opts)
end
if opts.key?(:command)
@resource_name_supplement = "from command: #{opts[:command]}"
load_raw_from_command(opts[:command])
elsif opts.key?(:content)
opts[:content]
else
raise Inspec::Exceptions::ResourceFailed, 'No JSON content; must specify a file, command, or raw JSON content'
end
end
def load_raw_from_file(path)
read_file_content(path)
end
def load_raw_from_command(command)
command_output = inspec.command(command).stdout
raise Inspec::Exceptions::ResourceSkipped, "No output from command: #{command}" if command_output.nil? || command_output.empty?
command_output
end
# for resources the subclass JsonConfig, this allows specification of the resource
# base name in each subclass so we can build a good to_s method
def resource_base_name
'JSON'
end
end
end