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#
# Author:: Serdar Sutay (<serdar@chef.io>)
# Copyright:: Copyright 2013-2016, 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/util/path_helper"
class Chef
module Deprecation
module Provider
# == Deprecation::Provider::File
# This module contains the deprecated functions of
# Chef::Provider::File. These functions are refactored to different
# components. They are frozen and will be removed in Chef 13.
#
module File
def diff_current_from_content(new_content)
result = nil
Tempfile.open("chef-diff") do |file|
file.write new_content
file.close
result = diff_current file.path
end
result
end
def is_binary?(path)
::File.open(path) do |file|
buff = file.read(Chef::Config[:diff_filesize_threshold])
buff = "" if buff.nil?
return buff !~ /^[\r[:print:]]*$/
end
end
def diff_current(temp_path)
suppress_resource_reporting = false
return [ "(diff output suppressed by config)" ] if Chef::Config[:diff_disabled]
return [ "(no temp file with new content, diff output suppressed)" ] unless ::File.exists?(temp_path) # should never happen?
# solaris does not support diff -N, so create tempfile to diff against if we are creating a new file
target_path = if ::File.exists?(@current_resource.path)
@current_resource.path
else
suppress_resource_reporting = true # suppress big diffs going to resource reporting service
tempfile = Tempfile.new("chef-tempfile")
tempfile.path
end
diff_filesize_threshold = Chef::Config[:diff_filesize_threshold]
diff_output_threshold = Chef::Config[:diff_output_threshold]
if ::File.size(target_path) > diff_filesize_threshold || ::File.size(temp_path) > diff_filesize_threshold
return [ "(file sizes exceed #{diff_filesize_threshold} bytes, diff output suppressed)" ]
end
# MacOSX(BSD?) diff will *sometimes* happily spit out nasty binary diffs
return [ "(current file is binary, diff output suppressed)"] if is_binary?(target_path)
return [ "(new content is binary, diff output suppressed)"] if is_binary?(temp_path)
begin
# -u: Unified diff format
result = shell_out("diff -u #{target_path} #{temp_path}" )
rescue Exception => e
# Should *not* receive this, but in some circumstances it seems that
# an exception can be thrown even using shell_out instead of shell_out!
return [ "Could not determine diff. Error: #{e.message}" ]
end
# diff will set a non-zero return code even when there's
# valid stdout results, if it encounters something unexpected
# So as long as we have output, we'll show it.
if not result.stdout.empty?
if result.stdout.length > diff_output_threshold
[ "(long diff of over #{diff_output_threshold} characters, diff output suppressed)" ]
else
val = result.stdout.split("\n")
val.delete("\\ No newline at end of file")
@new_resource.diff(val.join("\\n")) unless suppress_resource_reporting
val
end
elsif not result.stderr.empty?
[ "Could not determine diff. Error: #{result.stderr}" ]
else
[ "(no diff)" ]
end
end
def setup_acl
return if Chef::Platform.windows?
acl_scanner = ScanAccessControl.new(@new_resource, @current_resource)
acl_scanner.set_all!
end
def compare_content
checksum(@current_resource.path) == new_resource_content_checksum
end
def set_content
unless compare_content
description = []
description << "update content in file #{@new_resource.path} from #{short_cksum(@current_resource.checksum)} to #{short_cksum(new_resource_content_checksum)}"
description << diff_current_from_content(@new_resource.content)
converge_by(description) do
backup @new_resource.path if ::File.exists?(@new_resource.path)
::File.open(@new_resource.path, "w") {|f| f.write @new_resource.content }
Chef::Log.info("#{@new_resource} contents updated")
end
end
end
def update_new_file_state(path=@new_resource.path)
if !::File.directory?(path)
@new_resource.checksum(checksum(path))
end
if Chef::Platform.windows?
# TODO: To work around CHEF-3554, add support for Windows
# equivalent, or implicit resource reporting won't work for
# Windows.
return
end
acl_scanner = ScanAccessControl.new(@new_resource, @new_resource)
acl_scanner.set_all!
end
def set_all_access_controls
if access_controls.requires_changes?
converge_by(access_controls.describe_changes) do
access_controls.set_all
#Update file state with new access values
update_new_file_state
end
end
end
def deploy_tempfile
Tempfile.open(::File.basename(@new_resource.name)) do |tempfile|
yield tempfile
temp_res = Chef::Resource::CookbookFile.new(@new_resource.name)
temp_res.path(tempfile.path)
ac = Chef::FileAccessControl.new(temp_res, @new_resource, self)
ac.set_all!
FileUtils.mv(tempfile.path, @new_resource.path)
end
end
def backup(file=nil)
file ||= @new_resource.path
if @new_resource.backup != false && @new_resource.backup > 0 && ::File.exist?(file)
time = Time.now
savetime = time.strftime("%Y%m%d%H%M%S")
backup_filename = "#{@new_resource.path}.chef-#{savetime}"
backup_filename = backup_filename.sub(/^([A-Za-z]:)/, "") #strip drive letter on Windows
# if :file_backup_path is nil, we fallback to the old behavior of
# keeping the backup in the same directory. We also need to to_s it
# so we don't get a type error around implicit to_str conversions.
prefix = Chef::Config[:file_backup_path].to_s
backup_path = ::File.join(prefix, backup_filename)
FileUtils.mkdir_p(::File.dirname(backup_path)) if Chef::Config[:file_backup_path]
FileUtils.cp(file, backup_path, :preserve => true)
Chef::Log.info("#{@new_resource} backed up to #{backup_path}")
# Clean up after the number of backups
slice_number = @new_resource.backup
backup_files = Dir[Chef::Util::PathHelper.escape_glob(prefix, ".#{@new_resource.path}") + ".chef-*"].sort { |a,b| b <=> a }
if backup_files.length >= @new_resource.backup
remainder = backup_files.slice(slice_number..-1)
remainder.each do |backup_to_delete|
FileUtils.rm(backup_to_delete)
Chef::Log.info("#{@new_resource} removed backup at #{backup_to_delete}")
end
end
end
end
end
end
end
end
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