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       nonstop(false),
  66       isRunning(false),
  67       onAddUserNotifier(*this),
  68       onDelUserNotifier(*this),
  69       logger(STG::PluginLogger::get("ping"))
  70 {
  71 pthread_mutex_init(&mutex, NULL);
  72 }
  73 //-----------------------------------------------------------------------------
  74 PING::~PING()
  75 {
  76 pthread_mutex_destroy(&mutex);
  77 }
  78 //-----------------------------------------------------------------------------
  79 int PING::ParseSettings()
  80 {
  81 int ret = pingSettings.ParseSettings(settings);
  82 if (ret)
  83     errorStr = pingSettings.GetStrError();
  84 return ret;
  85 }
  86 //-----------------------------------------------------------------------------
  87 int PING::Start()
  88 {
  89 GetUsers();
  90
  91 users->AddNotifierUserAdd(&onAddUserNotifier);
  92 users->AddNotifierUserDel(&onDelUserNotifier);
  93
  94 nonstop = true;
  95
  96 pinger.SetDelayTime(pingSettings.GetPingDelay());
  97 pinger.Start();
  98
  99 if (pthread_create(&thread, NULL, Run, this))
 100     {
 101     errorStr = "Cannot start thread.";
 102     logger("Cannot create thread.");
 103     printfd(__FILE__, "Cannot start thread\n");
 104     return -1;
 105     }
 106
 107 return 0;
 108 }
 109 //-----------------------------------------------------------------------------
 110 int PING::Stop()
 111 {
 112 STG_LOCKER lock(&mutex);
 113
 114 if (!isRunning)
 115     return 0;
 116
 117 pinger.Stop();
 118 nonstop = false;
 119 //5 seconds to thread stops itself
 120 struct timespec ts = {0, 200000000};
 121 for (int i = 0; i < 25; i++)
 122     {
 123     if (!isRunning)
 124         break;
 125
 126     nanosleep(&ts, NULL);
 127     }
 128
 129 users->DelNotifierUserAdd(&onAddUserNotifier);
 130 users->DelNotifierUserDel(&onDelUserNotifier);
 131
 132 std::list<UserPtr>::iterator users_iter;
 133 users_iter = usersList.begin();
 134 while (users_iter != usersList.end())
 135     {
 136     UnSetUserNotifiers(*users_iter);
 137     ++users_iter;
 138     }
 139
 140 if (isRunning)
 141     return -1;
 142
 143 return 0;
 144 }
 145 //-----------------------------------------------------------------------------
 146 bool PING::IsRunning()
 147 {
 148 return isRunning;
 149 }
 150 //-----------------------------------------------------------------------------
 151 void * PING::Run(void * d)
 152 {
 153 sigset_t signalSet;
 154 sigfillset(&signalSet);
 155 pthread_sigmask(SIG_BLOCK, &signalSet, NULL);
 156
 157 PING * ping = static_cast<PING *>(d);
 158 ping->isRunning = true;
 159
 160 long delay = (10000000 * ping->pingSettings.GetPingDelay()) / 3 + 50000000;
 161
 162 while (ping->nonstop)
 163     {
 164     std::list<UserPtr>::iterator iter = ping->usersList.begin();
 165         {
 166         STG_LOCKER lock(&ping->mutex);
 167         while (iter != ping->usersList.end())
 168             {
 169             if ((*iter)->GetProperties().ips.ConstData().onlyOneIP())
 170                 {
 171                 uint32_t ip = (*iter)->GetProperties().ips.ConstData()[0].ip;
 172                 time_t t;
 173                 if (ping->pinger.GetIPTime(ip, &t) == 0)
 174                     {
 175                     if (t)
 176                         (*iter)->UpdatePingTime(t);
 177                     }
 178                 }
 179             else
 180                 {
 181                 uint32_t ip = (*iter)->GetCurrIP();
 182                 if (ip)
 183                     {
 184                     time_t t;
 185                     if (ping->pinger.GetIPTime(ip, &t) == 0)
 186                         {
 187                         if (t)
 188                             (*iter)->UpdatePingTime(t);
 189                         }
 190                     }
 191                 }
 192             ++iter;
 193             }
 194         }
 195     struct timespec ts = {delay / 1000000000, delay % 1000000000};
 196     for (int i = 0; i < 100; i++)
 197         {
 198         if (ping->nonstop)
 199             {
 200             nanosleep(&ts, NULL);
 201             }
 202         }
 203     }
 204
 205 ping->isRunning = false;
 206 return NULL;
 207 }
 208 //-----------------------------------------------------------------------------
 209 void PING::SetUserNotifiers(UserPtr u)
 210 {
 211 CHG_CURRIP_NOTIFIER_PING ChgCurrIPNotifier(*this, u);
 212 CHG_IPS_NOTIFIER_PING ChgIPNotifier(*this, u);
 213
 214 ChgCurrIPNotifierList.push_front(ChgCurrIPNotifier);
 215 ChgIPNotifierList.push_front(ChgIPNotifier);
 216
 217 u->AddCurrIPAfterNotifier(&(*ChgCurrIPNotifierList.begin()));
 218 u->GetProperties().ips.AddAfterNotifier(&(*ChgIPNotifierList.begin()));
 219 }
 220 //-----------------------------------------------------------------------------
 221 void PING::UnSetUserNotifiers(UserPtr u)
 222 {
 223 // ---          CurrIP              ---
 224 HAS_USER<CHG_CURRIP_NOTIFIER_PING> IsContainsUserCurrIP(u);
 225 HAS_USER<CHG_IPS_NOTIFIER_PING> IsContainsUserIP(u);
 226
 227 std::list<CHG_CURRIP_NOTIFIER_PING>::iterator currIPter;
 228 std::list<CHG_IPS_NOTIFIER_PING>::iterator IPIter;
 229
 230 currIPter = find_if(ChgCurrIPNotifierList.begin(),
 231                     ChgCurrIPNotifierList.end(),
 232                     IsContainsUserCurrIP);
 233
 234 if (currIPter != ChgCurrIPNotifierList.end())
 235     {
 236     currIPter->GetUser()->DelCurrIPAfterNotifier(&(*currIPter));
 237     ChgCurrIPNotifierList.erase(currIPter);
 238     }
 239 // ---         CurrIP end          ---
 240
 241 // ---          IP              ---
 242 IPIter = find_if(ChgIPNotifierList.begin(),
 243                  ChgIPNotifierList.end(),
 244                  IsContainsUserIP);
 245
 246 if (IPIter != ChgIPNotifierList.end())
 247     {
 248     IPIter->GetUser()->GetProperties().ips.DelAfterNotifier(&(*IPIter));
 249     ChgIPNotifierList.erase(IPIter);
 250     }
 251 // ---          IP end          ---
 252 }
 253 //-----------------------------------------------------------------------------
 254 void PING::GetUsers()
 255 {
 256 STG_LOCKER lock(&mutex);
 257
 258 UserPtr u;
 259 int h = users->OpenSearch();
 260 assert(h && "USERS::OpenSearch is always correct");
 261
 262 while (users->SearchNext(h, &u) == 0)
 263     {
 264     usersList.push_back(u);
 265     SetUserNotifiers(u);
 266     if (u->GetProperties().ips.ConstData().onlyOneIP())
 267         {
 268         pinger.AddIP(u->GetProperties().ips.ConstData()[0].ip);
 269         }
 270     else
 271         {
 272         uint32_t ip = u->GetCurrIP();
 273         if (ip)
 274             pinger.AddIP(ip);
 275         }
 276     }
 277
 278 users->CloseSearch(h);
 279 }
 280 //-----------------------------------------------------------------------------
 281 void PING::AddUser(UserPtr u)
 282 {
 283 STG_LOCKER lock(&mutex);
 284
 285 SetUserNotifiers(u);
 286 usersList.push_back(u);
 287 }
 288 //-----------------------------------------------------------------------------
 289 void PING::DelUser(UserPtr u)
 290 {
 291 STG_LOCKER lock(&mutex);
 292
 293 UnSetUserNotifiers(u);
 294
 295 std::list<UserPtr>::iterator users_iter;
 296 users_iter = usersList.begin();
 297
 298 while (users_iter != usersList.end())
 299     {
 300     if (u == *users_iter)
 301         {
 302         usersList.erase(users_iter);
 303         break;
 304         }
 305     ++users_iter;
 306     }
 307 }
 308 //-----------------------------------------------------------------------------
 309 void CHG_CURRIP_NOTIFIER_PING::Notify(const uint32_t & oldIP, const uint32_t & newIP)
 310 {
 311 ping.pinger.DelIP(oldIP);
 312 if (newIP)
 313     ping.pinger.AddIP(newIP);
 314 }
 315 //-----------------------------------------------------------------------------
 316 void CHG_IPS_NOTIFIER_PING::Notify(const STG::UserIPs & oldIPS, const STG::UserIPs & newIPS)
 317 {
 318 if (oldIPS.onlyOneIP())
 319     ping.pinger.DelIP(oldIPS[0].ip);
 320
 321 if (newIPS.onlyOneIP())
 322     ping.pinger.AddIP(newIPS[0].ip);
 323 }
 324 //-----------------------------------------------------------------------------
 325 void ADD_USER_NONIFIER_PING::Notify(const UserPtr & user)
 326 {
 327 ping.AddUser(user);
 328 }
 329 //-----------------------------------------------------------------------------
 330 void DEL_USER_NONIFIER_PING::Notify(const UserPtr & user)
 331 {
 332 ping.DelUser(user);
 333 }
 334 //-----------------------------------------------------------------------------