]> git.stg.codes - stg.git/blob - stglibs/pinger.lib/pinger.cpp
Added description for ScriptParams, DisableSessionLog and FilterParamsLog.
[stg.git] / stglibs / pinger.lib / pinger.cpp
1 #include <pthread.h>
2 #include <netdb.h>
3 #include <sys/types.h>
4 #include <sys/socket.h>
5 #include <netinet/in.h>
6 #include <arpa/inet.h>
7 #include <sys/time.h>
8 #include <unistd.h>
9 #include <fcntl.h>
10
11 #include <cstdlib>
12 #include <csignal>
13 #include <cstring>
14 #include <cerrno>
15 #include <cmath>
16 #include <cstdio>
17
18 #include "stg/common.h"
19 #include "stg/locker.h"
20
21 #include "stg/pinger.h"
22
23 #ifdef STG_TIME
24 extern volatile time_t stgTime;
25 #endif
26
27 //-----------------------------------------------------------------------------
28 STG_PINGER::STG_PINGER(time_t d)
29     : delay(d),
30       nonstop(false),
31       isRunningRecver(false),
32       isRunningSender(false),
33       sendSocket(-1),
34       recvSocket(-1),
35       sendThread(),
36       recvThread(),
37       pmSend(),
38       pid(0),
39       errorStr(),
40       pingIP(),
41       ipToAdd(),
42       ipToDel(),
43       mutex()
44 {
45 pthread_mutex_init(&mutex, NULL);
46 memset(&pmSend, 0, sizeof(pmSend));
47 }
48 //-----------------------------------------------------------------------------
49 STG_PINGER::~STG_PINGER()
50 {
51 pthread_mutex_destroy(&mutex);
52 }
53 //-----------------------------------------------------------------------------
54 int STG_PINGER::Start()
55 {
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);
60 nonstop = true;
61 pid = (int) getpid() % 65535;
62 if (sendSocket < 0 || recvSocket < 0)
63     {
64     errorStr = "Cannot create socket.";
65     return -1;
66     }
67
68 if (pthread_create(&sendThread, NULL, RunSendPing, this))
69     {
70     errorStr = "Cannot create send thread.";
71     return -1;
72     }
73
74 if (pthread_create(&recvThread, NULL, RunRecvPing, this))
75     {
76     errorStr = "Cannot create recv thread.";
77     return -1;
78     }
79
80 return 0;
81 }
82 //-----------------------------------------------------------------------------
83 int STG_PINGER::Stop()
84 {
85 close(recvSocket);
86 nonstop = false;
87 if (isRunningRecver)
88     {
89     //5 seconds to thread stops itself
90     for (size_t i = 0; i < 25; i++)
91         {
92         if (i % 5 == 0)
93             SendPing(0x0100007f);//127.0.0.1
94
95         if (!isRunningRecver)
96             break;
97
98         struct timespec ts = {0, 200000000};
99         nanosleep(&ts, NULL);
100         }
101     }
102
103 if (isRunningSender)
104     {
105     //5 seconds to thread stops itself
106     for (size_t i = 0; i < 25; i++)
107         {
108         if (!isRunningSender)
109             break;
110
111         struct timespec ts = {0, 200000000};
112         nanosleep(&ts, NULL);
113         }
114     }
115
116 close(sendSocket);
117
118 if (isRunningSender || isRunningRecver)
119     return -1;
120
121 return 0;
122 }
123 //-----------------------------------------------------------------------------
124 void STG_PINGER::AddIP(uint32_t ip)
125 {
126 STG_LOCKER lock(&mutex);
127 ipToAdd.push_back(ip);
128 }
129 //-----------------------------------------------------------------------------
130 void STG_PINGER::DelIP(uint32_t ip)
131 {
132 STG_LOCKER lock(&mutex);
133 ipToDel.push_back(ip);
134 }
135 //-----------------------------------------------------------------------------
136 void STG_PINGER::RealAddIP()
137 {
138 STG_LOCKER lock(&mutex);
139
140 std::list<uint32_t>::iterator iter;
141 iter = ipToAdd.begin();
142 while (iter != ipToAdd.end())
143     {
144     pingIP.insert(std::make_pair(*iter, 0));
145     ++iter;
146     }
147 ipToAdd.erase(ipToAdd.begin(), ipToAdd.end());
148 }
149 //-----------------------------------------------------------------------------
150 void STG_PINGER::RealDelIP()
151 {
152 STG_LOCKER lock(&mutex);
153
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())
158     {
159     treeIter = pingIP.find(*iter);
160     if (treeIter != pingIP.end())
161         pingIP.erase(treeIter);
162
163     ++iter;
164     }
165 ipToDel.erase(ipToDel.begin(), ipToDel.end());
166 }
167 //-----------------------------------------------------------------------------
168 void STG_PINGER::PrintAllIP()
169 {
170 STG_LOCKER lock(&mutex);
171 std::multimap<uint32_t, time_t>::iterator iter;
172 iter = pingIP.begin();
173 while (iter != pingIP.end())
174     {
175     uint32_t ip = iter->first;
176     time_t t = iter->second;
177     std::string s;
178     x2str(t, s);
179     printf("ip = %s, time = %9s\n", inet_ntostring(ip).c_str(), s.c_str());
180     ++iter;
181     }
182
183 }
184 //-----------------------------------------------------------------------------
185 int STG_PINGER::GetIPTime(uint32_t ip, time_t * t) const
186 {
187 STG_LOCKER lock(&mutex);
188 std::multimap<uint32_t, time_t>::const_iterator treeIter;
189
190 treeIter = pingIP.find(ip);
191 if (treeIter == pingIP.end())
192     return -1;
193
194 *t = treeIter->second;
195 return 0;
196 }
197 //-----------------------------------------------------------------------------
198 uint16_t STG_PINGER::PingCheckSum(void * data, int len)
199 {
200 uint16_t * buf = static_cast<uint16_t *>(data);
201 uint32_t sum = 0;
202 uint32_t result;
203
204 for ( sum = 0; len > 1; len -= 2 )
205     sum += *buf++;
206
207 if ( len == 1 )
208     sum += *reinterpret_cast<uint8_t*>(buf);
209
210 sum = (sum >> 16) + (sum & 0xFFFF);
211 sum += (sum >> 16);
212 result = ~sum;
213 return static_cast<uint16_t>(result);
214 }
215 //-----------------------------------------------------------------------------
216 int STG_PINGER::SendPing(uint32_t ip)
217 {
218 struct sockaddr_in addr;
219 memset(&addr, 0, sizeof(addr));
220 addr.sin_family = AF_INET;
221 addr.sin_port = 0;
222 addr.sin_addr.s_addr = ip;
223
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));
228
229 pmSend.hdr.checksum = PingCheckSum(&pmSend, sizeof(pmSend));
230
231 if (sendto(sendSocket, &pmSend, sizeof(pmSend), 0, (sockaddr *)&addr, sizeof(addr)) <= 0 )
232     {
233     errorStr = "Send ping error: " + std::string(strerror(errno));
234     return -1;
235     }
236
237
238 return 0;
239 }
240 //-----------------------------------------------------------------------------
241 uint32_t STG_PINGER::RecvPing()
242 {
243 struct sockaddr_in addr;
244 uint32_t ipAddr = 0;
245
246 char buf[128];
247 memset(buf, 0, sizeof(buf));
248 socklen_t len = sizeof(addr);
249
250 if (recvfrom(recvSocket, &buf, sizeof(buf), 0, reinterpret_cast<struct sockaddr*>(&addr), &len))
251     {
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));
254
255     if (icmp->un.echo.id != pid)
256         return 0;
257
258     ipAddr = *static_cast<uint32_t*>(static_cast<void *>(buf + sizeof(ICMP_HDR) + ip->ihl * 4));
259     }
260
261 return ipAddr;
262 }
263 //-----------------------------------------------------------------------------
264 void * STG_PINGER::RunSendPing(void * d)
265 {
266 sigset_t signalSet;
267 sigfillset(&signalSet);
268 pthread_sigmask(SIG_BLOCK, &signalSet, NULL);
269
270 STG_PINGER * pinger = static_cast<STG_PINGER *>(d);
271
272 pinger->isRunningSender = true;
273 time_t lastPing = 0;
274 while (pinger->nonstop)
275     {
276     pinger->RealAddIP();
277     pinger->RealDelIP();
278
279     std::multimap<uint32_t, time_t>::iterator iter;
280     iter = pinger->pingIP.begin();
281     while (iter != pinger->pingIP.end())
282         {
283         pinger->SendPing(iter->first);
284         ++iter;
285         }
286
287     time_t currTime;
288
289     #ifdef STG_TIME
290     lastPing = stgTime;
291     currTime = stgTime;
292     #else
293     currTime = lastPing = time(NULL);
294     #endif
295
296     while (currTime - lastPing < pinger->delay && pinger->nonstop)
297         {
298         #ifdef STG_TIME
299         currTime = stgTime;
300         #else
301         currTime = time(NULL);
302         #endif
303         struct timespec ts = {0, 20000000};
304         nanosleep(&ts, NULL);
305         }
306     }
307
308 pinger->isRunningSender = false;
309
310 return NULL;
311 }
312 //-----------------------------------------------------------------------------
313 void * STG_PINGER::RunRecvPing(void * d)
314 {
315 sigset_t signalSet;
316 sigfillset(&signalSet);
317 pthread_sigmask(SIG_BLOCK, &signalSet, NULL);
318
319 STG_PINGER * pinger = static_cast<STG_PINGER *>(d);
320
321 pinger->isRunningRecver = true;
322
323 while (pinger->nonstop)
324     {
325     uint32_t ip = pinger->RecvPing();
326
327     if (ip)
328         {
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)
332             {
333             #ifdef STG_TIME
334             treeIterLower->second = stgTime;
335             #else
336             treeIterLower->second = time(NULL);
337             #endif
338             ++treeIterLower;
339             }
340         }
341
342     }
343 pinger->isRunningRecver = false;
344 return NULL;
345 }
346 //-----------------------------------------------------------------------------