2 * @brief The updater class implementation. This class implements the updater logic.
6 * @copyright Intra2net AG
12 #include "serviceholder.h"
13 #include "service_dhs.h"
14 #include "service_ods.h"
15 #include "service_dyndns.h"
16 #include "service_dyns.h"
17 #include "service_easydns.h"
18 #include "service_tzo.h"
19 #include "service_zoneedit.h"
20 #include "service_gnudip.h"
22 #include <boost/foreach.hpp>
25 // Following boost macros are needed for serialization of derived classes through a base class pointer (Service *).
26 BOOST_CLASS_EXPORT_GUID(ServiceOds, "ServiceOds")
27 BOOST_CLASS_EXPORT_GUID(ServiceDhs, "ServiceDhs")
28 BOOST_CLASS_EXPORT_GUID(ServiceDyns, "ServiceDyns")
29 BOOST_CLASS_EXPORT_GUID(ServiceDyndns, "ServiceDyndns")
30 BOOST_CLASS_EXPORT_GUID(ServiceEasydns, "ServiceEasydns")
31 BOOST_CLASS_EXPORT_GUID(ServiceTzo, "ServiceTzo")
32 BOOST_CLASS_EXPORT_GUID(ServiceZoneedit, "ServiceZoneedit")
33 BOOST_CLASS_EXPORT_GUID(ServiceGnudip, "ServiceGnudip")
36 namespace fs = boost::filesystem;
41 * Default constructor which initializes the member Conf.
44 : IPHelp(new IPHelper)
46 // Initialize program wide Logger, at this point we don't know where to log and with which loglevel.
47 Logger::Ptr _log(new Logger);
51 // initialize Serviceholder
52 Serviceholder::Ptr _serviceholder(new Serviceholder(Log));
53 ServiceHolder = _serviceholder;
54 _serviceholder.reset();
57 Config::Ptr _config(new Config(Log,ServiceHolder));
73 * Load config and initialize helper classes.
74 * @param argc Number of arguments in array
75 * @param argv Array with cmd options
77 int Updater::load_config(int argc, char *argv[])
79 // load the cmd options
80 if ( init_config_from_cmd(argc,argv) != 0 )
83 // load the config and service files
84 if ( init_config_from_files() != 0 )
87 // init all helper classes
88 if ( init_helper_classes() != 0 )
96 * Reloading the config. Delete all Service objects and then init new Service objects from config files.
98 int Updater::reload_config()
100 // serialize all service objects
101 if ( ServiceHolder->serialize_services() != 0 )
104 // delete all service objects
105 ServiceHolder->delete_services();
107 // delete the actual Variables_map, perhaps with old cmd options which would overwrite new config file options.
108 Conf->delete_variables_map();
110 // load only config files
111 if ( init_config_from_files() != 0 )
114 // init all helper classes
115 if ( init_helper_classes() != 0 )
123 * Parse the command line arguments and initialize corresponding options.
124 * @param argc Number command line arguments.
125 * @param argv[] Array with arguments.
126 * @return 0 if cmd options successfully parsed, 1 if usage or version.
128 int Updater::init_config_from_cmd(int argc, char *argv[])
130 // Load the command line parameters
131 if( Conf->parse_cmd_line( argc, argv) != 0)
134 // If we have loaded the cmd options we need to init the log facility immediately in case debugging is enabled from cmd.
138 Log->print_cmd_parsed();
144 * Load the main config and the service definition files in config path.
145 * @return 0 if all is fine,
147 int Updater::init_config_from_files()
149 // Load the main and service config files in config path
150 if ( Conf->load_config_from_files() != 0 )
153 // Re-init log facility, perhaps new config file options for logger are set.
154 // These config file options will only overwrite the cmd options if the SIGHUP (reload config) is caught.
157 // Here we are. All Service Objects should be initialized, so it is time to deserialize the old service objects and compare them.
158 if ( ServiceHolder->deserialize_services() != 0 )
162 Log->print_conf_files_parsed();
168 * Init all Helper classes
171 int Updater::init_helper_classes()
173 // Initialize IPHelper
174 if ( init_ip_helper() != 0 )
182 * Init the IPHelp member with needed values.
183 * @return 0 if all is fine, -1 otherwise.
185 int Updater::init_ip_helper()
187 // initialize IPHelper
188 IPHelper::Ptr _iphelp(new IPHelper(Log,Conf->get_webcheck_ip_url(),Conf->get_webcheck_ip_url_alt(),Conf->get_enable_ipv6(),Conf->get_proxy(),Conf->get_proxy_port()));
197 * Getter for member Config.
198 * @return Member Config.
200 Config::Ptr Updater::get_config() const
207 * Getter for member Logger.
208 * @return Member Logger.
210 Logger::Ptr Updater::get_logger() const
217 * Initialize the logging facility with loglevel and syslog.
219 void Updater::init_log_facility()
221 Log->set_log_facility(Conf->get_loglevel(),Conf->get_syslog(),Conf->get_external_warning_log(),Conf->get_external_warning_level());
222 Log->print_init_log_facility();
227 * Update all configured services.
229 void Updater::update_services()
231 list<Service::Ptr> services = ServiceHolder->get_services();
233 string ip = IPHelp->get_actual_ip();
237 BOOST_FOREACH(Service::Ptr &service, services )
239 string dns_recheck_ip = ip;
240 int current_time = time(NULL);
243 if ( service->get_last_updates()->size() > 0 )
244 lastupdated = service->get_last_updates()->front();
246 // If the dns cache ttl is expired or the service is updated for the first time, then get the actual ip of the dns record (this should be the IP in the last update)
247 if ( ((lastupdated != 0) && ((lastupdated + service->get_dns_cache_ttl()) < current_time)) || (lastupdated == 0) )
249 Log->print_recheck_dns_entry(service->get_hostname(),lastupdated,service->get_dns_cache_ttl(),current_time);
250 string _dns_recheck_ip = IPHelp->dns_query(service->get_hostname());
251 Log->print_cached_dns_entry(service->get_hostname(), _dns_recheck_ip, service->get_actual_ip());
252 if (!_dns_recheck_ip.empty())
253 dns_recheck_ip = _dns_recheck_ip;
256 // In case the local hosts IP (ip) differ from the IP set in the last update (actual_ip) or
257 // the IP of the dns record (dns_recheck_ip) differs from the IP of the local host (ip)
258 // then perform an update. This implies that the update is not performed if actual_ip == dns_recheck_ip.
259 // Special case when latupdated == 0 then only perform the update if dns_rechek_ip differs from ip
260 if ( ((service->get_actual_ip() != ip) && (lastupdated != 0)) || (dns_recheck_ip != ip) )
261 service->update(ip,current_time);
262 else if ( (service->get_actual_ip() != ip) && (lastupdated == 0) )
263 service->set_actual_ip(ip);
270 * Getter for member ServiceHolder.
271 * @return ServiceHolder
273 Serviceholder::Ptr Updater::get_service_holder() const
275 return ServiceHolder;