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 else
 132     m_thread.join();
 133
 134 return 0;
 135 }
 136 //-----------------------------------------------------------------------------
 137 bool PING::IsRunning()
 138 {
 139 return isRunning;
 140 }
 141 //-----------------------------------------------------------------------------
 142 void PING::Run(std::stop_token token)
 143 {
 144 sigset_t signalSet;
 145 sigfillset(&signalSet);
 146 pthread_sigmask(SIG_BLOCK, &signalSet, NULL);
 147
 148 isRunning = true;
 149
 150 long delay = (10000000 * pingSettings.GetPingDelay()) / 3 + 50000000;
 151
 152 while (!token.stop_requested())
 153     {
 154     std::list<UserPtr>::iterator iter = usersList.begin();
 155         {
 156         std::lock_guard lock(m_mutex);
 157         while (iter != usersList.end())
 158             {
 159             if ((*iter)->GetProperties().ips.ConstData().onlyOneIP())
 160                 {
 161                 uint32_t ip = (*iter)->GetProperties().ips.ConstData()[0].ip;
 162                 time_t t;
 163                 if (pinger.GetIPTime(ip, &t) == 0)
 164                     {
 165                     if (t)
 166                         (*iter)->UpdatePingTime(t);
 167                     }
 168                 }
 169             else
 170                 {
 171                 uint32_t ip = (*iter)->GetCurrIP();
 172                 if (ip)
 173                     {
 174                     time_t t;
 175                     if (pinger.GetIPTime(ip, &t) == 0)
 176                         {
 177                         if (t)
 178                             (*iter)->UpdatePingTime(t);
 179                         }
 180                     }
 181                 }
 182             ++iter;
 183             }
 184         }
 185     struct timespec ts = {delay / 1000000000, delay % 1000000000};
 186     for (int i = 0; i < 100; i++)
 187         {
 188         if (!token.stop_requested())
 189             {
 190             nanosleep(&ts, NULL);
 191             }
 192         }
 193     }
 194
 195 isRunning = false;
 196 }
 197 //-----------------------------------------------------------------------------
 198 void PING::SetUserNotifiers(UserPtr u)
 199 {
 200 CHG_CURRIP_NOTIFIER_PING ChgCurrIPNotifier(*this, u);
 201 CHG_IPS_NOTIFIER_PING ChgIPNotifier(*this, u);
 202
 203 ChgCurrIPNotifierList.push_front(ChgCurrIPNotifier);
 204 ChgIPNotifierList.push_front(ChgIPNotifier);
 205
 206 u->AddCurrIPAfterNotifier(&(*ChgCurrIPNotifierList.begin()));
 207 u->GetProperties().ips.AddAfterNotifier(&(*ChgIPNotifierList.begin()));
 208 }
 209 //-----------------------------------------------------------------------------
 210 void PING::UnSetUserNotifiers(UserPtr u)
 211 {
 212 // ---          CurrIP              ---
 213 HAS_USER<CHG_CURRIP_NOTIFIER_PING> IsContainsUserCurrIP(u);
 214 HAS_USER<CHG_IPS_NOTIFIER_PING> IsContainsUserIP(u);
 215
 216 std::list<CHG_CURRIP_NOTIFIER_PING>::iterator currIPter;
 217 std::list<CHG_IPS_NOTIFIER_PING>::iterator IPIter;
 218
 219 currIPter = find_if(ChgCurrIPNotifierList.begin(),
 220                     ChgCurrIPNotifierList.end(),
 221                     IsContainsUserCurrIP);
 222
 223 if (currIPter != ChgCurrIPNotifierList.end())
 224     {
 225     currIPter->GetUser()->DelCurrIPAfterNotifier(&(*currIPter));
 226     ChgCurrIPNotifierList.erase(currIPter);
 227     }
 228 // ---         CurrIP end          ---
 229
 230 // ---          IP              ---
 231 IPIter = find_if(ChgIPNotifierList.begin(),
 232                  ChgIPNotifierList.end(),
 233                  IsContainsUserIP);
 234
 235 if (IPIter != ChgIPNotifierList.end())
 236     {
 237     IPIter->GetUser()->GetProperties().ips.DelAfterNotifier(&(*IPIter));
 238     ChgIPNotifierList.erase(IPIter);
 239     }
 240 // ---          IP end          ---
 241 }
 242 //-----------------------------------------------------------------------------
 243 void PING::GetUsers()
 244 {
 245 std::lock_guard lock(m_mutex);
 246
 247 UserPtr u;
 248 int h = users->OpenSearch();
 249 assert(h && "USERS::OpenSearch is always correct");
 250
 251 while (users->SearchNext(h, &u) == 0)
 252     {
 253     usersList.push_back(u);
 254     SetUserNotifiers(u);
 255     if (u->GetProperties().ips.ConstData().onlyOneIP())
 256         {
 257         pinger.AddIP(u->GetProperties().ips.ConstData()[0].ip);
 258         }
 259     else
 260         {
 261         uint32_t ip = u->GetCurrIP();
 262         if (ip)
 263             pinger.AddIP(ip);
 264         }
 265     }
 266
 267 users->CloseSearch(h);
 268 }
 269 //-----------------------------------------------------------------------------
 270 void PING::AddUser(UserPtr u)
 271 {
 272 std::lock_guard lock(m_mutex);
 273
 274 SetUserNotifiers(u);
 275 usersList.push_back(u);
 276 }
 277 //-----------------------------------------------------------------------------
 278 void PING::DelUser(UserPtr u)
 279 {
 280 std::lock_guard lock(m_mutex);
 281
 282 UnSetUserNotifiers(u);
 283
 284 std::list<UserPtr>::iterator users_iter;
 285 users_iter = usersList.begin();
 286
 287 while (users_iter != usersList.end())
 288     {
 289     if (u == *users_iter)
 290         {
 291         usersList.erase(users_iter);
 292         break;
 293         }
 294     ++users_iter;
 295     }
 296 }
 297 //-----------------------------------------------------------------------------
 298 void CHG_CURRIP_NOTIFIER_PING::Notify(const uint32_t & oldIP, const uint32_t & newIP)
 299 {
 300 ping.pinger.DelIP(oldIP);
 301 if (newIP)
 302     ping.pinger.AddIP(newIP);
 303 }
 304 //-----------------------------------------------------------------------------
 305 void CHG_IPS_NOTIFIER_PING::Notify(const STG::UserIPs & oldIPS, const STG::UserIPs & newIPS)
 306 {
 307 if (oldIPS.onlyOneIP())
 308     ping.pinger.DelIP(oldIPS[0].ip);
 309
 310 if (newIPS.onlyOneIP())
 311     ping.pinger.AddIP(newIPS[0].ip);
 312 }
 313 //-----------------------------------------------------------------------------
 314 void ADD_USER_NONIFIER_PING::Notify(const UserPtr & user)
 315 {
 316 ping.AddUser(user);
 317 }
 318 //-----------------------------------------------------------------------------
 319 void DEL_USER_NONIFIER_PING::Notify(const UserPtr & user)
 320 {
 321 ping.DelUser(user);
 322 }
 323 //-----------------------------------------------------------------------------