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#
# Author:: Adam Jacob (<adam@chef.io>)
# Copyright:: Copyright 2008-2017, 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.
#
require "chef/provider/package"
require "chef/resource/apt_package"
class Chef
class Provider
class Package
class Apt < Chef::Provider::Package
use_multipackage_api
provides :package, platform_family: "debian"
provides :apt_package, os: "linux"
def initialize(new_resource, run_context)
super
end
def load_current_resource
@current_resource = Chef::Resource::AptPackage.new(new_resource.name)
current_resource.package_name(new_resource.package_name)
current_resource.version(get_current_versions)
current_resource
end
def define_resource_requirements
super
requirements.assert(:all_actions) do |a|
a.assertion { !new_resource.source }
a.failure_message(Chef::Exceptions::Package, "apt package provider cannot handle source attribute. Use dpkg provider instead")
end
end
def package_data
@package_data ||= Hash.new do |hash, key|
hash[key] = package_data_for(key)
end
end
def get_current_versions
package_name_array.map do |package_name|
package_data[package_name][:current_version]
end
end
def get_candidate_versions
package_name_array.map do |package_name|
package_data[package_name][:candidate_version]
end
end
def candidate_version
@candidate_version ||= get_candidate_versions
end
def package_locked(name, version)
islocked = false
locked = shell_out_compact_timeout!("apt-mark", "showhold")
locked.stdout.each_line do |line|
line_package = line.strip
if line_package == name
islocked = true
end
end
islocked
end
def install_package(name, version)
package_name = name.zip(version).map do |n, v|
package_data[n][:virtual] ? n : "#{n}=#{v}"
end
run_noninteractive("apt-get", "-q", "-y", default_release_options, options, "install", package_name)
end
def upgrade_package(name, version)
install_package(name, version)
end
def remove_package(name, version)
package_name = name.map do |n|
package_data[n][:virtual] ? resolve_virtual_package_name(n) : n
end
run_noninteractive("apt-get", "-q", "-y", options, "remove", package_name)
end
def purge_package(name, version)
package_name = name.map do |n|
package_data[n][:virtual] ? resolve_virtual_package_name(n) : n
end
run_noninteractive("apt-get", "-q", "-y", options, "purge", package_name)
end
def preseed_package(preseed_file)
Chef::Log.info("#{new_resource} pre-seeding package installation instructions")
run_noninteractive("debconf-set-selections", preseed_file)
end
def reconfig_package(name, version)
Chef::Log.info("#{new_resource} reconfiguring")
run_noninteractive("dpkg-reconfigure", name)
end
def lock_package(name, version)
run_noninteractive("apt-mark", options, "hold", name)
end
def unlock_package(name, version)
run_noninteractive("apt-mark", options, "unhold", name)
end
private
# compare 2 versions to each other to see which is newer.
# this differs from the standard package method because we
# need to be able to parse debian version strings which contain
# tildes which Gem cannot properly parse
#
# @return [Integer] 1 if v1 > v2. 0 if they're equal. -1 if v1 < v2
def version_compare(v1, v2)
if shell_out_compact_timeout("dpkg", "--compare-versions", v1, "gt", v2).status.success?
1
elsif shell_out_compact_timeout("dpkg", "--compare-versions", v1, "eq", v2).status.success?
0
else
-1
end
end
# Runs command via shell_out with magic environment to disable
# interactive prompts. Command is run with default localization rather
# than forcing locale to "C", so command output may not be stable.
def run_noninteractive(*args)
shell_out_compact_timeout!(*args, env: { "DEBIAN_FRONTEND" => "noninteractive" })
end
def default_release_options
# Use apt::Default-Release option only if provider supports it
if new_resource.respond_to?(:default_release) && new_resource.default_release
[ "-o", "APT::Default-Release=#{new_resource.default_release}" ]
end
end
def resolve_package_versions(pkg)
current_version = nil
candidate_version = nil
run_noninteractive("apt-cache", default_release_options, "policy", pkg).stdout.each_line do |line|
case line
when /^\s{2}Installed: (.+)$/
current_version = ( $1 != "(none)" ) ? $1 : nil
Chef::Log.debug("#{new_resource} installed version for #{pkg} is #{$1}")
when /^\s{2}Candidate: (.+)$/
candidate_version = ( $1 != "(none)" ) ? $1 : nil
Chef::Log.debug("#{new_resource} candidate version for #{pkg} is #{$1}")
end
end
[ current_version, candidate_version ]
end
def resolve_virtual_package_name(pkg)
showpkg = run_noninteractive("apt-cache", "showpkg", pkg).stdout
partitions = showpkg.rpartition(/Reverse Provides: ?#{$/}/)
return nil if partitions[0] == "" && partitions[1] == "" # not found in output
set = partitions[2].lines.each_with_object(Set.new) do |line, acc|
# there may be multiple reverse provides for a single package
acc.add(line.split[0])
end
if set.size > 1
raise Chef::Exceptions::Package, "#{new_resource.package_name} is a virtual package provided by multiple packages, you must explicitly select one"
end
set.to_a.first
end
def package_data_for(pkg)
virtual = false
current_version = nil
candidate_version = nil
current_version, candidate_version = resolve_package_versions(pkg)
if candidate_version.nil?
newpkg = resolve_virtual_package_name(pkg)
if newpkg
virtual = true
Chef::Log.info("#{new_resource} is a virtual package, actually acting on package[#{newpkg}]")
current_version, candidate_version = resolve_package_versions(newpkg)
end
end
{
current_version: current_version,
candidate_version: candidate_version,
virtual: virtual,
}
end
end
end
end
end
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