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

   1 #include <cstdio>
   2 #include <cassert>
   3 #include <csignal>
   4 #include <ctime>
   5 #include <algorithm>
   6
   7 #include "stg/user.h"
   8 #include "stg/locker.h"
   9 #include "stg/user_property.h"
  10 #include "stg/plugin_creator.h"
  11 #include "ping.h"
  12
  13 PLUGIN_CREATOR<PING> pc;
  14 //-----------------------------------------------------------------------------
  15 //-----------------------------------------------------------------------------
  16 //-----------------------------------------------------------------------------
  17 PLUGIN * GetPlugin()
  18 {
  19 return pc.GetPlugin();
  20 }
  21 //-----------------------------------------------------------------------------
  22 //-----------------------------------------------------------------------------
  23 //-----------------------------------------------------------------------------
  24 // ëÌÁÓÓ ÄÌÑ ÐÏÉÓËÁ ÀÚÅÒÁ × ÓÐÉÓËÅ ÎÏÔÉÆÉËÁÔÏÒÏ×
  25 template <typename varType>
  26 class IS_CONTAINS_USER: public binary_function<varType, USER_PTR, bool>
  27 {
  28 public:
  29     IS_CONTAINS_USER(const USER_PTR & u) : user(u) {}
  30     bool operator()(varType notifier) const
  31         {
  32         return notifier.GetUser() == user;
  33         };
  34 private:
  35     const USER_PTR & user;
  36 };
  37 //-----------------------------------------------------------------------------
  38 //-----------------------------------------------------------------------------
  39 //-----------------------------------------------------------------------------
  40 int PING_SETTINGS::ParseSettings(const MODULE_SETTINGS & s)
  41 {
  42 PARAM_VALUE pv;
  43 vector<PARAM_VALUE>::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())
  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     : errorStr(),
  65       pingSettings(),
  66       settings(),
  67       users(NULL),
  68       usersList(),
  69       thread(),
  70       mutex(),
  71       nonstop(false),
  72       isRunning(false),
  73       pinger(),
  74       ChgCurrIPNotifierList(),
  75       ChgIPNotifierList(),
  76       onAddUserNotifier(*this),
  77       onDelUserNotifier(*this)
  78 {
  79 pthread_mutex_init(&mutex, NULL);
  80 }
  81 //-----------------------------------------------------------------------------
  82 PING::~PING()
  83 {
  84 pthread_mutex_destroy(&mutex);
  85 }
  86 //-----------------------------------------------------------------------------
  87 int PING::ParseSettings()
  88 {
  89 int ret = pingSettings.ParseSettings(settings);
  90 if (ret)
  91     errorStr = pingSettings.GetStrError();
  92 return ret;
  93 }
  94 //-----------------------------------------------------------------------------
  95 int PING::Start()
  96 {
  97 GetUsers();
  98
  99 users->AddNotifierUserAdd(&onAddUserNotifier);
 100 users->AddNotifierUserDel(&onDelUserNotifier);
 101
 102 nonstop = true;
 103
 104 pinger.SetDelayTime(pingSettings.GetPingDelay());
 105 pinger.Start();
 106
 107 if (pthread_create(&thread, NULL, Run, this))
 108     {
 109     errorStr = "Cannot start thread.";
 110     printfd(__FILE__, "Cannot start thread\n");
 111     return -1;
 112     }
 113
 114 return 0;
 115 }
 116 //-----------------------------------------------------------------------------
 117 int PING::Stop()
 118 {
 119 STG_LOCKER lock(&mutex, __FILE__, __LINE__);
 120
 121 if (!isRunning)
 122     return 0;
 123
 124 pinger.Stop();
 125 nonstop = false;
 126 //5 seconds to thread stops itself
 127 struct timespec ts = {0, 200000000};
 128 for (int i = 0; i < 25; i++)
 129     {
 130     if (!isRunning)
 131         break;
 132
 133     nanosleep(&ts, NULL);
 134     }
 135
 136 users->DelNotifierUserAdd(&onAddUserNotifier);
 137 users->DelNotifierUserDel(&onDelUserNotifier);
 138
 139 list<USER_PTR>::iterator users_iter;
 140 users_iter = usersList.begin();
 141 while (users_iter != usersList.end())
 142     {
 143     UnSetUserNotifiers(*users_iter);
 144     ++users_iter;
 145     }
 146
 147 if (isRunning)
 148     return -1;
 149
 150 return 0;
 151 }
 152 //-----------------------------------------------------------------------------
 153 bool PING::IsRunning()
 154 {
 155 return isRunning;
 156 }
 157 //-----------------------------------------------------------------------------
 158 void * PING::Run(void * d)
 159 {
 160 sigset_t signalSet;
 161 sigfillset(&signalSet);
 162 pthread_sigmask(SIG_BLOCK, &signalSet, NULL);
 163
 164 PING * ping = static_cast<PING *>(d);
 165 ping->isRunning = true;
 166
 167 long delay = (10000000 * ping->pingSettings.GetPingDelay()) / 3 + 50000000;
 168
 169 while (ping->nonstop)
 170     {
 171     list<USER_PTR>::iterator iter = ping->usersList.begin();
 172         {
 173         STG_LOCKER lock(&ping->mutex, __FILE__, __LINE__);
 174         while (iter != ping->usersList.end())
 175             {
 176             if ((*iter)->GetProperty().ips.ConstData().OnlyOneIP())
 177                 {
 178                 uint32_t ip = (*iter)->GetProperty().ips.ConstData()[0].ip;
 179                 time_t t;
 180                 if (ping->pinger.GetIPTime(ip, &t) == 0)
 181                     {
 182                     if (t)
 183                         (*iter)->UpdatePingTime(t);
 184                     }
 185                 }
 186             else
 187                 {
 188                 uint32_t ip = (*iter)->GetCurrIP();
 189                 if (ip)
 190                     {
 191                     time_t t;
 192                     if (ping->pinger.GetIPTime(ip, &t) == 0)
 193                         {
 194                         if (t)
 195                             (*iter)->UpdatePingTime(t);
 196                         }
 197                     }
 198                 }
 199             ++iter;
 200             }
 201         }
 202     struct timespec ts = {delay / 1000000000, delay % 1000000000};
 203     for (int i = 0; i < 100; i++)
 204         {
 205         if (ping->nonstop)
 206             {
 207             nanosleep(&ts, NULL);
 208             }
 209         }
 210     }
 211
 212 ping->isRunning = false;
 213 return NULL;
 214 }
 215 //-----------------------------------------------------------------------------
 216 void PING::SetUserNotifiers(USER_PTR u)
 217 {
 218 CHG_CURRIP_NOTIFIER_PING ChgCurrIPNotifier(*this, u);
 219 CHG_IPS_NOTIFIER_PING ChgIPNotifier(*this, u);
 220
 221 ChgCurrIPNotifierList.push_front(ChgCurrIPNotifier);
 222 ChgIPNotifierList.push_front(ChgIPNotifier);
 223
 224 u->AddCurrIPAfterNotifier(&(*ChgCurrIPNotifierList.begin()));
 225 u->GetProperty().ips.AddAfterNotifier(&(*ChgIPNotifierList.begin()));
 226 }
 227 //-----------------------------------------------------------------------------
 228 void PING::UnSetUserNotifiers(USER_PTR u)
 229 {
 230 // ---          CurrIP              ---
 231 IS_CONTAINS_USER<CHG_CURRIP_NOTIFIER_PING> IsContainsUserCurrIP(u);
 232 IS_CONTAINS_USER<CHG_IPS_NOTIFIER_PING> IsContainsUserIP(u);
 233
 234 list<CHG_CURRIP_NOTIFIER_PING>::iterator currIPter;
 235 list<CHG_IPS_NOTIFIER_PING>::iterator IPIter;
 236
 237 currIPter = find_if(ChgCurrIPNotifierList.begin(),
 238                     ChgCurrIPNotifierList.end(),
 239                     IsContainsUserCurrIP);
 240
 241 if (currIPter != ChgCurrIPNotifierList.end())
 242     {
 243     currIPter->GetUser()->DelCurrIPAfterNotifier(&(*currIPter));
 244     ChgCurrIPNotifierList.erase(currIPter);
 245     }
 246 // ---         CurrIP end          ---
 247
 248 // ---          IP              ---
 249 IPIter = find_if(ChgIPNotifierList.begin(),
 250                  ChgIPNotifierList.end(),
 251                  IsContainsUserIP);
 252
 253 if (IPIter != ChgIPNotifierList.end())
 254     {
 255     IPIter->GetUser()->GetProperty().ips.DelAfterNotifier(&(*IPIter));
 256     ChgIPNotifierList.erase(IPIter);
 257     }
 258 // ---          IP end          ---
 259 }
 260 //-----------------------------------------------------------------------------
 261 void PING::GetUsers()
 262 {
 263 STG_LOCKER lock(&mutex, __FILE__, __LINE__);
 264
 265 USER_PTR u;
 266 int h = users->OpenSearch();
 267 assert(h && "USERS::OpenSearch is always correct");
 268
 269 while (users->SearchNext(h, &u) == 0)
 270     {
 271     usersList.push_back(u);
 272     SetUserNotifiers(u);
 273     if (u->GetProperty().ips.ConstData().OnlyOneIP())
 274         {
 275         pinger.AddIP(u->GetProperty().ips.ConstData()[0].ip);
 276         }
 277     else
 278         {
 279         uint32_t ip = u->GetCurrIP();
 280         if (ip)
 281             {
 282             pinger.AddIP(ip);
 283             }
 284         }
 285     }
 286
 287 users->CloseSearch(h);
 288 }
 289 //-----------------------------------------------------------------------------
 290 void PING::AddUser(USER_PTR u)
 291 {
 292 STG_LOCKER lock(&mutex, __FILE__, __LINE__);
 293
 294 SetUserNotifiers(u);
 295 usersList.push_back(u);
 296 }
 297 //-----------------------------------------------------------------------------
 298 void PING::DelUser(USER_PTR u)
 299 {
 300 STG_LOCKER lock(&mutex, __FILE__, __LINE__);
 301
 302 UnSetUserNotifiers(u);
 303
 304 list<USER_PTR>::iterator users_iter;
 305 users_iter = usersList.begin();
 306
 307 while (users_iter != usersList.end())
 308     {
 309     if (u == *users_iter)
 310         {
 311         usersList.erase(users_iter);
 312         break;
 313         }
 314     ++users_iter;
 315     }
 316 }
 317 //-----------------------------------------------------------------------------
 318 void CHG_CURRIP_NOTIFIER_PING::Notify(const uint32_t & oldIP, const uint32_t & newIP)
 319 {
 320 ping.pinger.DelIP(oldIP);
 321 if (newIP)
 322     {
 323     ping.pinger.AddIP(newIP);
 324     }
 325 }
 326 //-----------------------------------------------------------------------------
 327 void CHG_IPS_NOTIFIER_PING::Notify(const USER_IPS & oldIPS, const USER_IPS & newIPS)
 328 {
 329 if (oldIPS.OnlyOneIP())
 330     {
 331     ping.pinger.DelIP(oldIPS[0].ip);
 332     }
 333
 334 if (newIPS.OnlyOneIP())
 335     {
 336     ping.pinger.AddIP(newIPS[0].ip);
 337     }
 338 }
 339 //-----------------------------------------------------------------------------
 340 void ADD_USER_NONIFIER_PING::Notify(const USER_PTR & user)
 341 {
 342 ping.AddUser(user);
 343 }
 344 //-----------------------------------------------------------------------------
 345 void DEL_USER_NONIFIER_PING::Notify(const USER_PTR & user)
 346 {
 347 ping.DelUser(user);
 348 }
 349 //-----------------------------------------------------------------------------