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#
# Author:: Adam Jacob (<adam@opscode.com>)
# Author:: Jesse Campbell (<hikeit@gmail.com>)
# Copyright:: Copyright (c) 2008 Opscode, 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/file'
require 'rest_client'
require 'uri'
require 'tempfile'
require 'net/https'
require 'net/ftp'
class Chef
class Provider
class RemoteFile < Chef::Provider::File
include Chef::Mixin::EnforceOwnershipAndPermissions
def load_current_resource
@current_resource = Chef::Resource::RemoteFile.new(@new_resource.name)
super
end
def action_create
Chef::Log.debug("#{@new_resource} checking for changes")
if current_resource_matches_target_checksum?
Chef::Log.debug("#{@new_resource} checksum matches target checksum (#{@new_resource.checksum}) - not updating")
else
sources = @new_resource.source
source = sources.shift
begin
uri = URI.parse(source)
if URI::HTTP === uri
#HTTP or HTTPS
raw_file = RestClient::Request.execute(:method => :get, :url => source, :raw_response => true).file
else
#FTP
raw_file = ftp_fetch(uri)
end
rescue SocketError, Errno::ECONNREFUSED, Timeout::Error, Net::HTTPFatalError => e
Chef::Log.debug("#{@new_resource} cannot be downloaded from #{source}")
if source = sources.shift
Chef::Log.debug("#{@new_resource} trying to download from another mirror")
retry
else
raise e
end
end
if matches_current_checksum?(raw_file)
Chef::Log.debug "#{@new_resource} target and source checksums are the same - not updating"
else
description = []
description << "copy file downloaded from #{@new_resource.source} into #{@new_resource.path}"
description << diff_current(raw_file.path)
converge_by(description) do
backup_new_resource
FileUtils.cp raw_file.path, @new_resource.path
Chef::Log.info "#{@new_resource} updated"
raw_file.close!
end
# whyrun mode cleanup - the temp file will never be used,
# so close/unlink it here.
if whyrun_mode?
raw_file.close!
end
end
end
set_all_access_controls
update_new_file_state
end
def current_resource_matches_target_checksum?
@new_resource.checksum && @current_resource.checksum && @current_resource.checksum =~ /^#{Regexp.escape(@new_resource.checksum)}/
end
def matches_current_checksum?(candidate_file)
Chef::Log.debug "#{@new_resource} checking for file existence of #{@new_resource.path}"
if ::File.exists?(@new_resource.path)
Chef::Log.debug "#{@new_resource} file exists at #{@new_resource.path}"
@new_resource.checksum(checksum(candidate_file.path))
Chef::Log.debug "#{@new_resource} target checksum: #{@current_resource.checksum}"
Chef::Log.debug "#{@new_resource} source checksum: #{@new_resource.checksum}"
@new_resource.checksum == @current_resource.checksum
else
Chef::Log.debug "#{@new_resource} creating #{@new_resource.path}"
false
end
end
def backup_new_resource
if ::File.exists?(@new_resource.path)
Chef::Log.debug "#{@new_resource} checksum changed from #{@current_resource.checksum} to #{@new_resource.checksum}"
backup @new_resource.path
end
end
private
def ftp_fetch(uri)
# Shamelessly stolen from open-uri
# Fetches the file using Net::FTP, returning a Tempfile
path = uri.path
path = path.sub(%r{\A/}, '%2F') # re-encode the beginning slash because uri library decodes it.
directories = path.split(%r{/}, -1)
directories.each {|d|
d.gsub!(/%([0-9A-Fa-f][0-9A-Fa-f])/) { [$1].pack("H2") }
}
unless filename = directories.pop
raise ArgumentError, "no filename: #{uri.inspect}"
end
directories.each {|d|
if /[\r\n]/ =~ d
raise ArgumentError, "invalid directory: #{d.inspect}"
end
}
if /[\r\n]/ =~ filename
raise ArgumentError, "invalid filename: #{filename.inspect}"
end
typecode = uri.typecode
if typecode && /\A[aid]\z/ !~ typecode
raise ArgumentError, "invalid typecode: #{typecode.inspect}"
end
tempfile = Tempfile.new(filename)
# The access sequence is defined by RFC 1738
ftp = Net::FTP.new
ftp.connect(uri.hostname, uri.port)
ftp.passive = true if !@new_resource.ftp_active_mode
# todo: extract user/passwd from .netrc.
user = 'anonymous'
passwd = nil
user, passwd = uri.userinfo.split(/:/) if uri.userinfo
ftp.login(user, passwd)
directories.each {|cwd|
ftp.voidcmd("CWD #{cwd}")
}
if typecode
# xxx: typecode D is not handled.
ftp.voidcmd("TYPE #{typecode.upcase}")
end
ftp.getbinaryfile(filename, tempfile.path)
ftp.close
tempfile
end
end
end
end
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