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require 'puppet/sslcertificates'
require 'puppet/network/http_pool'
require 'openssl'
require 'puppet/external/base64'
require 'xmlrpc/client'
require 'net/https'
require 'yaml'
module Puppet::Network
class ClientError < Puppet::Error; end
class XMLRPCClientError < Puppet::Error; end
class XMLRPCClient < ::XMLRPC::Client
attr_accessor :puppet_server, :puppet_port
@clients = {}
class << self
include Puppet::Util
include Puppet::Util::ClassGen
end
# Create a netclient for each handler
def self.mkclient(handler)
interface = handler.interface
namespace = interface.prefix
# Create a subclass for every client type. This is
# so that all of the methods are on their own class,
# so that their namespaces can define the same methods if
# they want.
constant = handler.name.to_s.capitalize
name = namespace.downcase
newclient = genclass(name, :hash => @clients, :constant => constant)
interface.methods.each { |ary|
method = ary[0]
newclient.send(:define_method,method) { |*args|
make_rpc_call(namespace, method, *args)
}
}
newclient
end
def self.handler_class(handler)
@clients[handler] || self.mkclient(handler)
end
class ErrorHandler
def initialize(&block)
singleton_class.define_method(:execute, &block)
end
end
# Use a class variable so all subclasses have access to it.
@@error_handlers = {}
def self.error_handler(exception)
if handler = @@error_handlers[exception.class]
return handler
else
return @@error_handlers[:default]
end
end
def self.handle_error(*exceptions, &block)
handler = ErrorHandler.new(&block)
exceptions.each do |exception|
@@error_handlers[exception] = handler
end
end
handle_error(OpenSSL::SSL::SSLError) do |client, detail, namespace, method|
if detail.message =~ /bad write retry/
Puppet.warning "Transient SSL write error; restarting connection and retrying"
client.recycle_connection
return :retry
end
["certificate verify failed", "hostname was not match", "hostname not match"].each do |str|
Puppet.warning "Certificate validation failed; consider using the certname configuration option" if detail.message.include?(str)
end
raise XMLRPCClientError, "Certificates were not trusted: #{detail}"
end
handle_error(:default) do |client, detail, namespace, method|
if detail.message.to_s =~ /^Wrong size\. Was \d+, should be \d+$/
Puppet.warning "XMLRPC returned wrong size. Retrying."
return :retry
end
Puppet.err "Could not call #{namespace}.#{method}: #{detail.inspect}"
error = XMLRPCClientError.new(detail.to_s)
error.set_backtrace detail.backtrace
raise error
end
handle_error(OpenSSL::SSL::SSLError) do |client, detail, namespace, method|
if detail.message =~ /bad write retry/
Puppet.warning "Transient SSL write error; restarting connection and retrying"
client.recycle_connection
return :retry
end
["certificate verify failed", "hostname was not match", "hostname not match"].each do |str|
Puppet.warning "Certificate validation failed; consider using the certname configuration option" if detail.message.include?(str)
end
raise XMLRPCClientError, "Certificates were not trusted: #{detail}"
end
handle_error(::XMLRPC::FaultException) do |client, detail, namespace, method|
raise XMLRPCClientError, detail.faultString
end
handle_error(Errno::ECONNREFUSED) do |client, detail, namespace, method|
msg = "Could not connect to #{client.host} on port #{client.port}"
raise XMLRPCClientError, msg
end
handle_error(SocketError) do |client, detail, namespace, method|
Puppet.err "Could not find server #{@host}: #{detail}"
error = XMLRPCClientError.new("Could not find server #{client.host}")
error.set_backtrace detail.backtrace
raise error
end
handle_error(Errno::EPIPE, EOFError) do |client, detail, namespace, method|
Puppet.info "Other end went away; restarting connection and retrying"
client.recycle_connection
return :retry
end
handle_error(Timeout::Error) do |client, detail, namespace, method|
Puppet.err "Connection timeout calling #{namespace}.#{method}: #{detail}"
error = XMLRPCClientError.new("Connection Timeout")
error.set_backtrace(detail.backtrace)
raise error
end
def make_rpc_call(namespace, method, *args)
Puppet.debug "Calling #{namespace}.#{method}"
begin
call("#{namespace}.#{method}",*args)
rescue SystemExit,NoMemoryError
raise
rescue Exception => detail
retry if self.class.error_handler(detail).execute(self, detail, namespace, method) == :retry
end
ensure
http.finish if http.started?
end
def http
@http ||= Puppet::Network::HttpPool.http_instance(host, port, true)
end
attr_reader :host, :port
def initialize(hash = {})
hash[:Path] ||= "/RPC2"
hash[:Server] ||= Puppet[:server]
hash[:Port] ||= Puppet[:masterport]
hash[:HTTPProxyHost] ||= Puppet[:http_proxy_host]
hash[:HTTPProxyPort] ||= Puppet[:http_proxy_port]
if "none" == hash[:HTTPProxyHost]
hash[:HTTPProxyHost] = nil
hash[:HTTPProxyPort] = nil
end
super(
hash[:Server],
hash[:Path],
hash[:Port],
hash[:HTTPProxyHost],
hash[:HTTPProxyPort],
nil, # user
nil, # password
true, # use_ssl
Puppet[:configtimeout] # use configured timeout (#1176)
)
@http = Puppet::Network::HttpPool.http_instance(@host, @port)
end
# Get rid of our existing connection, replacing it with a new one.
# This should only happen if we lose our connection somehow (e.g., an EPIPE)
# or we've just downloaded certs and we need to create new http instances
# with the certs added.
def recycle_connection
http.finish if http.started?
@http = nil
self.http # force a new one
end
def start
@http.start unless @http.started?
rescue => detail
Puppet.err "Could not connect to server: #{detail}"
end
def local
false
end
def local?
false
end
end
end
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