4 #include <sys/socket.h>
5 #include <netinet/in.h>
18 #include "stg/common.h"
19 #include "stg/locker.h"
21 #include "stg/pinger.h"
24 extern volatile time_t stgTime;
27 //-----------------------------------------------------------------------------
28 STG_PINGER::STG_PINGER(time_t d)
31 isRunningRecver(false),
32 isRunningSender(false),
45 pthread_mutex_init(&mutex, NULL);
46 memset(&pmSend, 0, sizeof(pmSend));
48 //-----------------------------------------------------------------------------
49 STG_PINGER::~STG_PINGER()
51 pthread_mutex_destroy(&mutex);
53 //-----------------------------------------------------------------------------
54 int STG_PINGER::Start()
56 struct protoent *proto = NULL;
57 proto = getprotobyname("ICMP");
58 sendSocket = socket(PF_INET, SOCK_RAW, proto->p_proto);
59 recvSocket = socket(PF_INET, SOCK_RAW, proto->p_proto);
61 pid = (int) getpid() % 65535;
62 if (sendSocket < 0 || recvSocket < 0)
64 errorStr = "Cannot create socket.";
68 if (pthread_create(&sendThread, NULL, RunSendPing, this))
70 errorStr = "Cannot create send thread.";
74 if (pthread_create(&recvThread, NULL, RunRecvPing, this))
76 errorStr = "Cannot create recv thread.";
82 //-----------------------------------------------------------------------------
83 int STG_PINGER::Stop()
89 //5 seconds to thread stops itself
90 for (size_t i = 0; i < 25; i++)
93 SendPing(0x0100007f);//127.0.0.1
98 struct timespec ts = {0, 200000000};
105 //5 seconds to thread stops itself
106 for (size_t i = 0; i < 25; i++)
108 if (!isRunningSender)
111 struct timespec ts = {0, 200000000};
112 nanosleep(&ts, NULL);
118 if (isRunningSender || isRunningRecver)
123 //-----------------------------------------------------------------------------
124 void STG_PINGER::AddIP(uint32_t ip)
126 STG_LOCKER lock(&mutex);
127 ipToAdd.push_back(ip);
129 //-----------------------------------------------------------------------------
130 void STG_PINGER::DelIP(uint32_t ip)
132 STG_LOCKER lock(&mutex);
133 ipToDel.push_back(ip);
135 //-----------------------------------------------------------------------------
136 void STG_PINGER::RealAddIP()
138 STG_LOCKER lock(&mutex);
140 std::list<uint32_t>::iterator iter;
141 iter = ipToAdd.begin();
142 while (iter != ipToAdd.end())
144 pingIP.insert(std::make_pair(*iter, 0));
147 ipToAdd.erase(ipToAdd.begin(), ipToAdd.end());
149 //-----------------------------------------------------------------------------
150 void STG_PINGER::RealDelIP()
152 STG_LOCKER lock(&mutex);
154 std::list<uint32_t>::iterator iter;
155 std::multimap<uint32_t, time_t>::iterator treeIter;
156 iter = ipToDel.begin();
157 while (iter != ipToDel.end())
159 treeIter = pingIP.find(*iter);
160 if (treeIter != pingIP.end())
161 pingIP.erase(treeIter);
165 ipToDel.erase(ipToDel.begin(), ipToDel.end());
167 //-----------------------------------------------------------------------------
168 void STG_PINGER::PrintAllIP()
170 STG_LOCKER lock(&mutex);
171 std::multimap<uint32_t, time_t>::iterator iter;
172 iter = pingIP.begin();
173 while (iter != pingIP.end())
175 uint32_t ip = iter->first;
176 time_t t = iter->second;
179 printf("ip = %s, time = %9s\n", inet_ntostring(ip).c_str(), s.c_str());
184 //-----------------------------------------------------------------------------
185 int STG_PINGER::GetIPTime(uint32_t ip, time_t * t) const
187 STG_LOCKER lock(&mutex);
188 std::multimap<uint32_t, time_t>::const_iterator treeIter;
190 treeIter = pingIP.find(ip);
191 if (treeIter == pingIP.end())
194 *t = treeIter->second;
197 //-----------------------------------------------------------------------------
198 uint16_t STG_PINGER::PingCheckSum(void * data, int len)
200 uint16_t * buf = static_cast<uint16_t *>(data);
204 for ( sum = 0; len > 1; len -= 2 )
208 sum += *reinterpret_cast<uint8_t*>(buf);
210 sum = (sum >> 16) + (sum & 0xFFFF);
213 return static_cast<uint16_t>(result);
215 //-----------------------------------------------------------------------------
216 int STG_PINGER::SendPing(uint32_t ip)
218 struct sockaddr_in addr;
219 memset(&addr, 0, sizeof(addr));
220 addr.sin_family = AF_INET;
222 addr.sin_addr.s_addr = ip;
224 memset(&pmSend, 0, sizeof(pmSend));
225 pmSend.hdr.type = ICMP_ECHO;
226 pmSend.hdr.un.echo.id = static_cast<uint16_t>(pid);
227 memcpy(pmSend.msg, &ip, sizeof(ip));
229 pmSend.hdr.checksum = PingCheckSum(&pmSend, sizeof(pmSend));
231 if (sendto(sendSocket, &pmSend, sizeof(pmSend), 0, (sockaddr *)&addr, sizeof(addr)) <= 0 )
233 errorStr = "Send ping error: " + std::string(strerror(errno));
240 //-----------------------------------------------------------------------------
241 uint32_t STG_PINGER::RecvPing()
243 struct sockaddr_in addr;
247 memset(buf, 0, sizeof(buf));
248 socklen_t len = sizeof(addr);
250 if (recvfrom(recvSocket, &buf, sizeof(buf), 0, reinterpret_cast<struct sockaddr*>(&addr), &len))
252 struct IP_HDR * ip = static_cast<struct IP_HDR *>(static_cast<void *>(buf));
253 struct ICMP_HDR *icmp = static_cast<struct ICMP_HDR *>(static_cast<void *>(buf + ip->ihl * 4));
255 if (icmp->un.echo.id != pid)
258 ipAddr = *static_cast<uint32_t*>(static_cast<void *>(buf + sizeof(ICMP_HDR) + ip->ihl * 4));
263 //-----------------------------------------------------------------------------
264 void * STG_PINGER::RunSendPing(void * d)
267 sigfillset(&signalSet);
268 pthread_sigmask(SIG_BLOCK, &signalSet, NULL);
270 STG_PINGER * pinger = static_cast<STG_PINGER *>(d);
272 pinger->isRunningSender = true;
274 while (pinger->nonstop)
279 std::multimap<uint32_t, time_t>::iterator iter;
280 iter = pinger->pingIP.begin();
281 while (iter != pinger->pingIP.end())
283 pinger->SendPing(iter->first);
293 currTime = lastPing = time(NULL);
296 while (currTime - lastPing < pinger->delay && pinger->nonstop)
301 currTime = time(NULL);
303 struct timespec ts = {0, 20000000};
304 nanosleep(&ts, NULL);
308 pinger->isRunningSender = false;
312 //-----------------------------------------------------------------------------
313 void * STG_PINGER::RunRecvPing(void * d)
316 sigfillset(&signalSet);
317 pthread_sigmask(SIG_BLOCK, &signalSet, NULL);
319 STG_PINGER * pinger = static_cast<STG_PINGER *>(d);
321 pinger->isRunningRecver = true;
323 while (pinger->nonstop)
325 uint32_t ip = pinger->RecvPing();
329 std::multimap<uint32_t, time_t>::iterator treeIterUpper = pinger->pingIP.upper_bound(ip);
330 std::multimap<uint32_t, time_t>::iterator treeIterLower = pinger->pingIP.lower_bound(ip);
331 while (treeIterUpper != treeIterLower)
334 treeIterLower->second = stgTime;
336 treeIterLower->second = time(NULL);
343 pinger->isRunningRecver = false;
346 //-----------------------------------------------------------------------------