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"
21 #include <boost/foreach.hpp>
24 // Following boost macros are needed for serialization of derived classes through a base class pointer (Service *).
25 BOOST_CLASS_EXPORT_GUID(SERVICE_ODS, "SERVICE_ODS")
26 BOOST_CLASS_EXPORT_GUID(SERVICE_DHS, "SERVICE_DHS")
27 BOOST_CLASS_EXPORT_GUID(SERVICE_DYNS, "SERVICE_DYNS")
28 BOOST_CLASS_EXPORT_GUID(SERVICE_DYNDNS, "SERVICE_DYNDNS")
29 BOOST_CLASS_EXPORT_GUID(SERVICE_EASYDNS, "SERVICE_EASYDNS")
30 BOOST_CLASS_EXPORT_GUID(SERVICE_TZO, "SERVICE_TZO")
31 BOOST_CLASS_EXPORT_GUID(SERVICE_ZONEEDIT, "SERVICE_ZONEEDIT")
34 namespace fs = boost::filesystem;
39 * Default constructor which initializes the member Conf.
42 : IPHelp(new IPHelper)
44 // Initialize program wide Logger, at this point we don't know where to log and with which loglevel.
45 Logger::Ptr _log(new Logger);
49 // initialize Serviceholder
50 Serviceholder::Ptr _serviceholder(new Serviceholder(Log));
51 ServiceHolder = _serviceholder;
52 _serviceholder.reset();
55 Config::Ptr _config(new Config(Log,ServiceHolder));
71 * Load config and initialize helper classes.
72 * @param argc Number of arguments in array
73 * @param argv Array with cmd options
75 int Updater::load_config(int argc, char *argv[])
77 // load the cmd options
78 if ( init_config_from_cmd(argc,argv) != 0 )
81 // load the config and service files
82 if ( init_config_from_files() != 0 )
85 // init all helper classes
86 if ( init_helper_classes() != 0 )
94 * Reloading the config. Delete all Service objects and then init new Service objects from config files.
96 int Updater::reload_config()
98 // serialize all service objects
99 if ( ServiceHolder->serialize_services() != 0 )
102 // delete all service objects
103 ServiceHolder->delete_services();
105 // delete the actual Variables_map, perhaps with old cmd options which would overwrite new config file options.
106 Conf->delete_variables_map();
108 // load only config files
109 if ( init_config_from_files() != 0 )
112 // init all helper classes
113 if ( init_helper_classes() != 0 )
121 * Parse the command line arguments and initialize corresponding options.
122 * @param argc Number command line arguments.
123 * @param argv[] Array with arguments.
124 * @return 0 if cmd options successfully parsed, 1 if usage or version.
126 int Updater::init_config_from_cmd(int argc, char *argv[])
128 // Load the command line parameters
129 if( Conf->parse_cmd_line( argc, argv) != 0)
132 // If we have loaded the cmd options we need to init the log facility immediately in case debugging is enabled from cmd.
136 Log->print_cmd_parsed();
142 * Load the main config and the service definition files in config path.
143 * @return 0 if all is fine,
145 int Updater::init_config_from_files()
147 // Load the main and service config files in config path
148 if ( Conf->load_config_from_files() != 0 )
151 // Re-init log facility, perhaps new config file options for logger are set.
152 // These config file options will only overwrite the cmd options if the SIGHUP (reload config) is caught.
155 // Here we are. All Service Objects should be initialized, so it is time to deserialize the old service objects and compare them.
156 if ( ServiceHolder->deserialize_services() != 0 )
160 Log->print_conf_files_parsed();
166 * Init all Helper classes
169 int Updater::init_helper_classes()
171 // Initialize IPHelper
172 if ( init_ip_helper() != 0 )
180 * Init the IPHelp member with needed values.
181 * @return 0 if all is fine, -1 otherwise.
183 int Updater::init_ip_helper()
185 // initialize IPHelper
186 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()));
195 * Getter for member Config.
196 * @return Member Config.
198 Config::Ptr Updater::get_config() const
205 * Getter for member Logger.
206 * @return Member Logger.
208 Logger::Ptr Updater::get_logger() const
215 * Initialize the logging facility with loglevel and syslog.
217 void Updater::init_log_facility()
219 Log->set_log_facility(Conf->get_loglevel(),Conf->get_syslog(),Conf->get_external_warning_log(),Conf->get_external_warning_level());
220 Log->print_init_log_facility();
225 * Update all configured services.
227 void Updater::update_services()
229 list<Service::Ptr> services = ServiceHolder->get_services();
231 string ip = IPHelp->get_actual_ip();
235 BOOST_FOREACH(Service::Ptr &service, services )
237 string dns_recheck_ip = ip;
238 int current_time = time(NULL);
241 if ( service->get_last_updates()->size() > 0 )
242 lastupdated = service->get_last_updates()->front();
244 // 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)
245 if ( ((lastupdated != 0) && ((lastupdated + service->get_dns_cache_ttl()) < current_time)) || (lastupdated == 0) )
247 Log->print_recheck_dns_entry(service->get_hostname(),lastupdated,service->get_dns_cache_ttl(),current_time);
248 string _dns_recheck_ip = IPHelp->dns_query(service->get_hostname());
249 Log->print_cached_dns_entry(service->get_hostname(), _dns_recheck_ip, service->get_actual_ip());
250 if (!_dns_recheck_ip.empty())
251 dns_recheck_ip = _dns_recheck_ip;
254 // In case the local hosts IP (ip) differ from the IP set in the last update (actual_ip) or
255 // the IP of the dns record (dns_recheck_ip) differs from the IP of the local host (ip)
256 // then perform an update. This implies that the update is not performed if actual_ip == dns_recheck_ip.
257 // Special case when latupdated == 0 then only perform the update if dns_rechek_ip differs from ip
258 if ( ((service->get_actual_ip() != ip) && (lastupdated != 0)) || (dns_recheck_ip != ip) )
259 service->update(ip,current_time);
260 else if ( (service->get_actual_ip() != ip) && (lastupdated == 0) )
261 service->set_actual_ip(ip);
268 * Getter for member ServiceHolder.
269 * @return ServiceHolder
271 Serviceholder::Ptr Updater::get_service_holder() const
273 return ServiceHolder;