projects/stargazer/plugins/other/ping/ping.cpp

   1 #include "ping.h"
   2
   3 #include "stg/user.h"
   4 #include "stg/locker.h"
   5 #include "stg/user_property.h"
   6
   7 #include <cstdio>
   8 #include <cassert>
   9 #include <csignal>
  10 #include <ctime>
  11 #include <algorithm>
  12
  13 namespace
  14 {
  15 //-----------------------------------------------------------------------------
  16 //-----------------------------------------------------------------------------
  17 //-----------------------------------------------------------------------------
  18 template <typename varType>
  19 class HAS_USER: public std::binary_function<varType, UserPtr, bool>
  20 {
  21 public:
  22     explicit HAS_USER(const UserPtr & u) : user(u) {}
  23     bool operator()(varType notifier) const
  24         {
  25         return notifier.GetUser() == user;
  26         }
  27 private:
  28     const UserPtr & user;
  29 };
  30 }
  31
  32 extern "C" STG::Plugin* GetPlugin()
  33 {
  34     static PING plugin;
  35     return &plugin;
  36 }
  37 //-----------------------------------------------------------------------------
  38 //-----------------------------------------------------------------------------
  39 //-----------------------------------------------------------------------------
  40 int PING_SETTINGS::ParseSettings(const STG::ModuleSettings & s)
  41 {
  42 STG::ParamValue pv;
  43 std::vector<STG::ParamValue>::const_iterator pvi;
  44
  45 pv.param = "PingDelay";
  46 pvi = std::find(s.moduleParams.begin(), s.moduleParams.end(), pv);
  47 if (pvi == s.moduleParams.end() || pvi->value.empty())
  48     {
  49     errorStr = "Parameter \'PingDelay\' not found.";
  50     printfd(__FILE__, "Parameter 'PingDelay' not found\n");
  51     return -1;
  52     }
  53 if (ParseIntInRange(pvi->value[0], 5, 3600, &pingDelay))
  54     {
  55     errorStr = "Cannot parse parameter \'PingDelay\': " + errorStr;
  56     printfd(__FILE__, "Canot parse parameter 'PingDelay'\n");
  57     return -1;
  58     }
  59
  60 return 0;
  61 }
  62 //-----------------------------------------------------------------------------
  63 PING::PING()
  64     : users(NULL),
  65       isRunning(false),
  66       onAddUserNotifier(*this),
  67       onDelUserNotifier(*this),
  68       logger(STG::PluginLogger::get("ping"))
  69 {
  70 }
  71 //-----------------------------------------------------------------------------
  72 PING::~PING()
  73 {
  74 }
  75 //-----------------------------------------------------------------------------
  76 int PING::ParseSettings()
  77 {
  78 int ret = pingSettings.ParseSettings(settings);
  79 if (ret)
  80     errorStr = pingSettings.GetStrError();
  81 return ret;
  82 }
  83 //-----------------------------------------------------------------------------
  84 int PING::Start()
  85 {
  86 GetUsers();
  87
  88 users->AddNotifierUserAdd(&onAddUserNotifier);
  89 users->AddNotifierUserDel(&onDelUserNotifier);
  90
  91 pinger.SetDelayTime(pingSettings.GetPingDelay());
  92 pinger.Start();
  93
  94 m_thread = std::jthread([this](auto token){ Run(token); });
  95
  96 return 0;
  97 }
  98 //-----------------------------------------------------------------------------
  99 int PING::Stop()
 100 {
 101 std::lock_guard lock(m_mutex);
 102
 103 if (!m_thread.joinable())
 104     return 0;
 105
 106 pinger.Stop();
 107 m_thread.request_stop();
 108 //5 seconds to thread stops itself
 109 struct timespec ts = {0, 200000000};
 110 for (int i = 0; i < 25; i++)
 111     {
 112     if (!isRunning)
 113         break;
 114
 115     nanosleep(&ts, NULL);
 116     }
 117
 118 users->DelNotifierUserAdd(&onAddUserNotifier);
 119 users->DelNotifierUserDel(&onDelUserNotifier);
 120
 121 std::list<UserPtr>::iterator users_iter;
 122 users_iter = usersList.begin();
 123 while (users_iter != usersList.end())
 124     {
 125     UnSetUserNotifiers(*users_iter);
 126     ++users_iter;
 127     }
 128
 129 if (isRunning)
 130     m_thread.detach();
 131
 132 return 0;
 133 }
 134 //-----------------------------------------------------------------------------
 135 bool PING::IsRunning()
 136 {
 137 return isRunning;
 138 }
 139 //-----------------------------------------------------------------------------
 140 void PING::Run(std::stop_token token)
 141 {
 142 sigset_t signalSet;
 143 sigfillset(&signalSet);
 144 pthread_sigmask(SIG_BLOCK, &signalSet, NULL);
 145
 146 isRunning = true;
 147
 148 long delay = (10000000 * pingSettings.GetPingDelay()) / 3 + 50000000;
 149
 150 while (!token.stop_requested())
 151     {
 152     std::list<UserPtr>::iterator iter = usersList.begin();
 153         {
 154         std::lock_guard lock(m_mutex);
 155         while (iter != usersList.end())
 156             {
 157             if ((*iter)->GetProperties().ips.ConstData().onlyOneIP())
 158                 {
 159                 uint32_t ip = (*iter)->GetProperties().ips.ConstData()[0].ip;
 160                 time_t t;
 161                 if (pinger.GetIPTime(ip, &t) == 0)
 162                     {
 163                     if (t)
 164                         (*iter)->UpdatePingTime(t);
 165                     }
 166                 }
 167             else
 168                 {
 169                 uint32_t ip = (*iter)->GetCurrIP();
 170                 if (ip)
 171                     {
 172                     time_t t;
 173                     if (pinger.GetIPTime(ip, &t) == 0)
 174                         {
 175                         if (t)
 176                             (*iter)->UpdatePingTime(t);
 177                         }
 178                     }
 179                 }
 180             ++iter;
 181             }
 182         }
 183     struct timespec ts = {delay / 1000000000, delay % 1000000000};
 184     for (int i = 0; i < 100; i++)
 185         {
 186         if (!token.stop_requested())
 187             {
 188             nanosleep(&ts, NULL);
 189             }
 190         }
 191     }
 192
 193 isRunning = false;
 194 }
 195 //-----------------------------------------------------------------------------
 196 void PING::SetUserNotifiers(UserPtr u)
 197 {
 198 CHG_CURRIP_NOTIFIER_PING ChgCurrIPNotifier(*this, u);
 199 CHG_IPS_NOTIFIER_PING ChgIPNotifier(*this, u);
 200
 201 ChgCurrIPNotifierList.push_front(ChgCurrIPNotifier);
 202 ChgIPNotifierList.push_front(ChgIPNotifier);
 203
 204 u->AddCurrIPAfterNotifier(&(*ChgCurrIPNotifierList.begin()));
 205 u->GetProperties().ips.AddAfterNotifier(&(*ChgIPNotifierList.begin()));
 206 }
 207 //-----------------------------------------------------------------------------
 208 void PING::UnSetUserNotifiers(UserPtr u)
 209 {
 210 // ---          CurrIP              ---
 211 HAS_USER<CHG_CURRIP_NOTIFIER_PING> IsContainsUserCurrIP(u);
 212 HAS_USER<CHG_IPS_NOTIFIER_PING> IsContainsUserIP(u);
 213
 214 std::list<CHG_CURRIP_NOTIFIER_PING>::iterator currIPter;
 215 std::list<CHG_IPS_NOTIFIER_PING>::iterator IPIter;
 216
 217 currIPter = find_if(ChgCurrIPNotifierList.begin(),
 218                     ChgCurrIPNotifierList.end(),
 219                     IsContainsUserCurrIP);
 220
 221 if (currIPter != ChgCurrIPNotifierList.end())
 222     {
 223     currIPter->GetUser()->DelCurrIPAfterNotifier(&(*currIPter));
 224     ChgCurrIPNotifierList.erase(currIPter);
 225     }
 226 // ---         CurrIP end          ---
 227
 228 // ---          IP              ---
 229 IPIter = find_if(ChgIPNotifierList.begin(),
 230                  ChgIPNotifierList.end(),
 231                  IsContainsUserIP);
 232
 233 if (IPIter != ChgIPNotifierList.end())
 234     {
 235     IPIter->GetUser()->GetProperties().ips.DelAfterNotifier(&(*IPIter));
 236     ChgIPNotifierList.erase(IPIter);
 237     }
 238 // ---          IP end          ---
 239 }
 240 //-----------------------------------------------------------------------------
 241 void PING::GetUsers()
 242 {
 243 std::lock_guard lock(m_mutex);
 244
 245 UserPtr u;
 246 int h = users->OpenSearch();
 247 assert(h && "USERS::OpenSearch is always correct");
 248
 249 while (users->SearchNext(h, &u) == 0)
 250     {
 251     usersList.push_back(u);
 252     SetUserNotifiers(u);
 253     if (u->GetProperties().ips.ConstData().onlyOneIP())
 254         {
 255         pinger.AddIP(u->GetProperties().ips.ConstData()[0].ip);
 256         }
 257     else
 258         {
 259         uint32_t ip = u->GetCurrIP();
 260         if (ip)
 261             pinger.AddIP(ip);
 262         }
 263     }
 264
 265 users->CloseSearch(h);
 266 }
 267 //-----------------------------------------------------------------------------
 268 void PING::AddUser(UserPtr u)
 269 {
 270 std::lock_guard lock(m_mutex);
 271
 272 SetUserNotifiers(u);
 273 usersList.push_back(u);
 274 }
 275 //-----------------------------------------------------------------------------
 276 void PING::DelUser(UserPtr u)
 277 {
 278 std::lock_guard lock(m_mutex);
 279
 280 UnSetUserNotifiers(u);
 281
 282 std::list<UserPtr>::iterator users_iter;
 283 users_iter = usersList.begin();
 284
 285 while (users_iter != usersList.end())
 286     {
 287     if (u == *users_iter)
 288         {
 289         usersList.erase(users_iter);
 290         break;
 291         }
 292     ++users_iter;
 293     }
 294 }
 295 //-----------------------------------------------------------------------------
 296 void CHG_CURRIP_NOTIFIER_PING::Notify(const uint32_t & oldIP, const uint32_t & newIP)
 297 {
 298 ping.pinger.DelIP(oldIP);
 299 if (newIP)
 300     ping.pinger.AddIP(newIP);
 301 }
 302 //-----------------------------------------------------------------------------
 303 void CHG_IPS_NOTIFIER_PING::Notify(const STG::UserIPs & oldIPS, const STG::UserIPs & newIPS)
 304 {
 305 if (oldIPS.onlyOneIP())
 306     ping.pinger.DelIP(oldIPS[0].ip);
 307
 308 if (newIPS.onlyOneIP())
 309     ping.pinger.AddIP(newIPS[0].ip);
 310 }
 311 //-----------------------------------------------------------------------------
 312 void ADD_USER_NONIFIER_PING::Notify(const UserPtr & user)
 313 {
 314 ping.AddUser(user);
 315 }
 316 //-----------------------------------------------------------------------------
 317 void DEL_USER_NONIFIER_PING::Notify(const UserPtr & user)
 318 {
 319 ping.DelUser(user);
 320 }
 321 //-----------------------------------------------------------------------------