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|
require 'puppet/sslcertificates'
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 = {}
@@http_cache = {}
class << self
include Puppet::Util
include Puppet::Util::ClassGen
end
# Clear our http cache.
def self.clear_http_instances
@@http_cache.clear
end
# Retrieve a cached http instance of caching is enabled, else return
# a new one.
def self.http_instance(host, port, reset = false)
# We overwrite the uninitialized @http here with a cached one.
key = "%s:%s" % [host, port]
# Return our cached instance if keepalive is enabled and we've got
# a cache, as long as we're not resetting the instance.
return @@http_cache[key] if ! reset and Puppet[:http_keepalive] and @@http_cache[key]
args = [host, port]
if Puppet[:http_proxy_host] == "none"
args << nil << nil
else
args << Puppet[:http_proxy_host] << Puppet[:http_proxy_port]
end
@http = Net::HTTP.new(*args)
# Pop open @http a little; older versions of Net::HTTP(s) didn't
# give us a reader for ca_file... Grr...
class << @http; attr_accessor :ca_file; end
@http.use_ssl = true
@http.read_timeout = 120
@http.open_timeout = 120
@@http_cache[key] = @http if Puppet[:http_keepalive]
return @http
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]
if public_method_defined?(method)
raise Puppet::DevError, "Method %s is already defined" %
method
end
newclient.send(:define_method,method) { |*args|
Puppet.debug "Calling %s.%s" % [namespace, method]
begin
call("%s.%s" % [namespace, method.to_s],*args)
rescue OpenSSL::SSL::SSLError => detail
if detail.message =~ /bad write retry/
Puppet.warning "Transient SSL write error; restarting connection and retrying"
self.recycle_connection(@cert_client)
retry
end
raise XMLRPCClientError,
"Certificates were not trusted: %s" % detail
rescue ::XMLRPC::FaultException => detail
raise XMLRPCClientError, detail.faultString
rescue Errno::ECONNREFUSED => detail
msg = "Could not connect to %s on port %s" %
[@host, @port]
raise XMLRPCClientError, msg
rescue SocketError => detail
Puppet.err "Could not find server %s: %s" %
[@host, detail.to_s]
error = XMLRPCClientError.new(
"Could not find server %s" % @host
)
error.set_backtrace detail.backtrace
raise error
rescue Errno::EPIPE, EOFError
Puppet.warning "Other end went away; restarting connection and retrying"
self.recycle_connection(@cert_client)
retry
rescue => detail
if detail.message =~ /^Wrong size\. Was \d+, should be \d+$/
Puppet.warning "XMLRPC returned wrong size. Retrying."
retry
end
Puppet.err "Could not call %s.%s: %s" %
[namespace, method, detail.inspect]
error = XMLRPCClientError.new(detail.to_s)
error.set_backtrace detail.backtrace
raise error
end
}
}
return newclient
end
def self.handler_class(handler)
@clients[handler] || self.mkclient(handler)
end
# Use cert information from a Puppet client to set up the http object.
def cert_setup(client)
# Cache it for next time
@cert_client = client
unless FileTest.exist?(Puppet[:localcacert])
raise Puppet::SSLCertificates::Support::MissingCertificate,
"Could not find ca certificate %s" % Puppet[:localcacert]
end
# We can't overwrite certificates, @http will freeze itself
# once started.
unless @http.ca_file
@http.ca_file = Puppet[:localcacert]
store = OpenSSL::X509::Store.new
store.add_file Puppet[:localcacert]
store.purpose = OpenSSL::X509::PURPOSE_SSL_CLIENT
@http.cert_store = store
@http.cert = client.cert
@http.verify_mode = OpenSSL::SSL::VERIFY_PEER
@http.key = client.key
end
end
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
120 # a two minute timeout, instead of 30 seconds
)
@http = self.class.http_instance(@host, @port)
end
def recycle_connection(client)
@http = self.class.http_instance(@host, @port, true) # reset the instance
cert_setup(client)
end
def start
@http.start unless @http.started?
end
def local
false
end
def local?
false
end
end
end
|
