1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
|
private: System::Void timer5_Tick(System::Object^ sender, System::EventArgs^ e) {
array<String^>^ subItems=gcnew array<String^>(18);
u_long netmask;
int devcount;
pcap_t *hdev;
pcap_if_t *alldevs;
char *description[10];
char *devname[10];
char *devip[10];
char *devfilter[10];
pcap_if_t *d;
int inum;
int i;
in_addr iptemp;
pcap_t *adhandle;
char errbuf[PCAP_ERRBUF_SIZE];
struct tm *ltime1;
struct tm *ltime2;
char timestr1[16];
char timestr2[16];
struct bpf_program fcode;
struct pcap_pkthdr *header;
const u_char *pkt_data;
time_t local_tv_sec;
u_int ip_len;
char sip[15];
char dip[15];
char smac[20];
char dmac[20];
char sport[6];
char dport[6];
char info[6];
char flag[6];
char tlen[6];
char identification[6];
char flags_fo[6];
ip_header *ih;
mac_header *mh;
icmp_header *icmph;
igmp_header *igmph;
tcp_header *tcph;
tcp_header *tcph1;
udp_header *uh;
int newval;
devfilter[0] = "nofilter";
devfilter[1] = "tcp";
devfilter[2] = "udp";
devfilter[3] = "icmp";
try
{
if (k==-1){
if (pcap_findalldevs_ex(PCAP_SRC_IF_STRING, NULL, &alldevs, errbuf) == -1)
{
MessageBox::Show("Error in pcap_findalldevs: %s\n");
exit(1);
}
/* Print the list */
for(d=alldevs; d; d=d->next)
{String ^ str51 = gcnew String(d->name);
printf("%d. %s", ++i, d->name);
}
if(i==0)
{
MessageBox::Show("\nNo interfaces found! Make sure WinPcap is installed.\n");
}
/* Jump to the selected adapter */
for(d=alldevs, i=0; i<(comboBox1->SelectedIndex) ;d=d->next, i++);
/* Open the device */
if ( (adhandle= pcap_open(d->name, // name of the device
65536, // portion of the packet to capture.
PCAP_OPENFLAG_PROMISCUOUS, // promiscuous mode
1000, // read timeout
NULL, // authentication on the remote machine
errbuf // error buffer
) ) == NULL)
{
MessageBox::Show("\nUnable to open the adapter. %s is not supported by WinPcap\n");
/* Free the device list */
pcap_freealldevs(alldevs);
}}
printf("\nlistening on %s...\n", d->description);
}
catch(Exception ^ e)
{
}
/* At this point, we don't need any more the device list. Free it */
if(alldevs->addresses != NULL)
{
iptemp = ((struct sockaddr_in *)(alldevs->addresses->netmask))->sin_addr;
netmask = iptemp.S_un.S_addr;
}
else
netmask=0xffffff; //if host has no IP assume that it belongs to C class
//set packets filter (udp, tcp, etc)
if((comboBox2->SelectedIndex)>0)
{
if(pcap_compile(adhandle, &fcode,devfilter[(comboBox2->SelectedIndex)], 1, netmask) < 0)
{pcap_freealldevs(alldevs); }
if(pcap_setfilter(adhandle, &fcode) < 0)
{pcap_freealldevs(alldevs);}}
try {
while((res = pcap_next_ex( adhandle, &header, &pkt_data)) > 0){
//for(int i=0;i<16;i++) subItems[i]="----";
if(res == 0)
/* Timeout elapsed */
continue;
else if (res>0){
local_tv_sec = header->ts.tv_sec;
ltime1=localtime(&local_tv_sec);
ltime2=localtime(&local_tv_sec);
strftime( timestr1, sizeof timestr1, "%d/%m/%y", ltime1);
strftime( timestr2, sizeof timestr2, "%H:%M:%S", ltime2);
String ^ str11 = gcnew String(timestr1);
String ^ str22 = gcnew String(timestr2);
subItems[1]=str11+"~~"+str22;
//position of MAC addresses
mh = (mac_header *)(pkt_data);
sprintf(smac,"%.2x:%.2x:%.2x:%.2x:%.2x:%.2x",
mh->source[0],mh->source[1],mh->source[2],mh->source[3],mh->source[4],mh->source[5]);
String ^ str1 = gcnew String(smac);
subItems[2] = str1;
sprintf(dmac,"%.2x:%.2x:%.2x:%.2x:%.2x:%.2x",
mh->dest[0],mh->dest[1],mh->dest[2],mh->dest[3],mh->dest[4],mh->dest[5]);
String ^ str2 = gcnew String(dmac);
subItems[5] = str2;
//position of IP addresses
ih = (ip_header *) (pkt_data + 14); //14 - MAC header length
sprintf(sip, "%d.%d.%d.%d", ih->saddr.byte1, ih->saddr.byte2, ih->saddr.byte3, ih->saddr.byte4);
String ^ str3 = gcnew String(sip);
subItems[3] = str3;
sprintf(dip, "%d.%d.%d.%d", ih->daddr.byte1, ih->daddr.byte2, ih->daddr.byte3, ih->daddr.byte4);
String ^ str4 = gcnew String(dip);
subItems[6] = str4;
if (subItems[3]->CompareTo(gcnew String(session->devip[comboBox1->SelectedIndex]))==0){
sprintf(tlen, "%d", ih->tlen);
String ^ str31 = gcnew String(tlen);
int f55;
f55= Convert::ToInt32(str31);
String ^s55 = Convert::ToString(htons(f55));
subItems[11] = s55;subItems[12] = "----";}
else {sprintf(tlen, "%d", ih->tlen);
String ^ str31 = gcnew String(tlen);
int f55;
f55= Convert::ToInt32(str31);
String ^s55 = Convert::ToString(htons(f55));
subItems[12] = s55;subItems[11] = "----";}
sprintf(identification,"%d",ih->identification);
String ^ str41=gcnew String(identification);
int x41 = Convert::ToInt32(str41);
str41= Convert::ToString(htons(x41));
subItems[16]=str41;
sprintf(flags_fo,"%d",ih->flags_fo);
str41=gcnew String(flags_fo);
x41=Convert::ToInt32(str41);
str41= Convert::ToString(htons(x41));
subItems[17]=str41;
//IP header length
ip_len = (ih->ver_ihl & 0xf) * 4;
sprintf(info, "%d", ih->ttl);
String ^ str5 = gcnew String(info);
subItems[8] = str5;
//check the protocol
if(ih->proto == 2) //IGMP
{
sprintf(info, "IGMP");
igmph = (igmp_header *) ((u_char*)ih + ip_len);
subItems[4] = "----";//sport
subItems[7] = "----";//dport
subItems[13]= "----";//service
subItems[14]=subItems[15]="----";
}
else if(ih->proto == 1) //ICMP
{
sprintf(info, "ICMP");
icmph = (icmp_header *) ((u_char*)ih + ip_len);
subItems[4] = "----";//sport
subItems[7] = "----";//dport
subItems[13]= "----";//service
subItems[14]=subItems[15]="----";
}
else if(ih->proto == 6) //TCP
{
sprintf(info, "TCP");
tcph = (tcp_header *) ((u_char*)ih + ip_len);
//get ports' numbers etc.
sprintf(flag, "%d", tcph->flag);
String ^ str30 = gcnew String(flag);
sprintf(sport, "%d", tcph->sport);
String ^ str6 = gcnew String(sport);
int f1,f15;
f1= Convert::ToInt32(str6);
String ^s33 = Convert::ToString(htons(f1));
subItems[4] = s33;
sprintf(dport, "%d", tcph->dport);
String ^ str7 = gcnew String(dport);
f1= Convert::ToInt32(str7);
String ^s66 = Convert::ToString(htons(f1));
subItems[7] = s66;
sprintf(sport, "%d", tcph->seqno);
String ^ str13 = gcnew String(sport);
f1= Convert::ToInt32(str13);
String ^s313 = Convert::ToString(htons(f1));
subItems[14] = s313;
sprintf(sport, "%d", tcph->ackno);
String ^ str15 = gcnew String(sport);
f15= Convert::ToInt32(str15);
String ^s15 = Convert::ToString(htons(f15));
subItems[15] = s15;
if (subItems[7]->CompareTo("80")==0){subItems[13]="HTTP";}
else if (subItems[7]->CompareTo("21")==0){subItems[13]="FTP";}
else if (subItems[7]->CompareTo("23")==0){subItems[13]="TELNET";}
else if (subItems[7]->CompareTo("25")==0){subItems[13]="SMTP";}
else if (subItems[7]->CompareTo("53")==0){subItems[13]="DNS";}
else if (subItems[7]->CompareTo("110")==0){subItems[13]="POP3";}
else {subItems[13]="Autre";}
//HERE YOU CAN GET OTHER PARAMETERS OF PACKETS, CONTAING DATA ETC.
}
else if(ih->proto == 17) //UDP
{
sprintf(info, "UDP");
uh = (udp_header *) ((u_char*)ih + ip_len);
//get ports' numbers etc.
sprintf(sport, "%d", uh->sport);
String ^ str6 = gcnew String(sport);
int f1,f2;
f1= Convert::ToInt32(str6);
String ^s33 = Convert::ToString(htons(f1));
subItems[4] = s33;
sprintf(dport, "%d", uh->dport);
String ^ str7 = gcnew String(dport);
f1= Convert::ToInt32(str7);
String ^s66 = Convert::ToString(htons(f1));
subItems[7] = s66;
subItems[14]=subItems[15]="----";
if (subItems[7]->CompareTo("80")==0){subItems[13]="HTTP";}
else if (subItems[7]->CompareTo("21")==0){subItems[13]="FTP";}
else if (subItems[7]->CompareTo("23")==0){subItems[13]="TELNET";}
else if (subItems[7]->CompareTo("25")==0){subItems[13]="SMTP";}
else if (subItems[7]->CompareTo("53")==0){subItems[13]="DNS";}
else if (subItems[7]->CompareTo("110")==0){subItems[13]="POP3";}
else {subItems[13]="Autre";}
}
else
{
sprintf(info, "%d", ih->proto);
subItems[4] = "----";//sport
subItems[7] = "----";//dport
subItems[13]= "----";//service
subItems[14]=subItems[15]="----";
}
if (((subItems[4]==subItems[7])&&(subItems[4]!="----")&&(subItems[7]!="----"))||(subItems[3]==subItems[6]))
subItems[10]="1";
else subItems[10]="0";
String ^ str8 = gcnew String(info);
String ^ str30 = gcnew String(flag);
if ((str8->CompareTo("TCP")==0)&&(str30->CompareTo("2")==0))subItems[9] = str8+"(SYN=1)" ;
else if ((str8->CompareTo("TCP")==0)&&(str30->CompareTo("4")==0))subItems[9] = str8+"(RST=1)" ;
else if ((str8->CompareTo("TCP")==0)&&(str30->CompareTo("16")==0))subItems[9] = str8+"(ACK=1)" ;
else if ((str8->CompareTo("TCP")==0)&&(str30->CompareTo("18")==0))subItems[9] = str8+"(ACK=1)(SYN=1)" ;
else if ((str8->CompareTo("TCP")==0)&&(str30->CompareTo("17")==0))subItems[9] = str8+"(ACK=1)(FIN=1)";
else if ((str8->CompareTo("TCP")==0)&&(str30->CompareTo("24")==0))subItems[9] = str8+"(ACK=1)(PSH=1)" ;
else if ((str8->CompareTo("TCP")==0)&&(str30->CompareTo("20")==0))subItems[9] = str8+"(ACK=1)(RST=1)" ;
else if ((str8->CompareTo("TCP")==0)&&(str30->CompareTo("25")==0))subItems[9] = str8+"(ACK=1)(FIN=1)" ;
else if ((str8->CompareTo("TCP")==0)&&(str30->CompareTo("48")==0))subItems[9] = str8+"(ACK=1)(URG=1)" ;
else if ((str8->CompareTo("TCP")==0)&&(str30->CompareTo("32")==0))subItems[9] = str8+"(URG=1)" ;
else if (str8->CompareTo("TCP")==0) subItems[9] = str8;
else if (str8->CompareTo("UDP")==0)subItems[9] = str8;
else if (str8->CompareTo("ICMP")==0)subItems[9] = str8;
else if (str8->CompareTo("IGMP")==0)subItems[9] = str8;
else subItems[9] = "Autre";//+" "+str30;
subItems[0] =Convert::ToString(c);
for (int i=0;i<=15;i++)
{DumpText += subItems[i]+" ";
}
DumpText +="\n";
cpt++;
num +=Convert::ToString(cpt)+" ";
//DelegateConection ^ con= gcnew DelegateConection(this,&BHIDS00::Form1::Connection);
//con->Invoke(subItems,DumpText);
//Connection (subItems,DumpText);
int g;
c++;
nbpaqparmin++;
if (nbpaqparmin==1)
{
date1 = DateTime::Parse( subItems[1]->Replace("~~"," ") );
strformat=subItems[1];
}
System::TimeSpan ^ diff1 =gcnew System::TimeSpan(0,0,0);
System::DateTime date2 = DateTime::Parse( subItems[1]->Replace("~~"," ") );
diff1=date2-date1;
cpttemps=(diff1->Minutes)*60+diff1->Seconds;
if(cpttemps==1)label8->Text=String::Format("nbre de packet par seconde est : {0} ",
Convert::ToString(nbpaqparmin));
if((cpttemps==1)&&(nbpaqparmin>=30))
{ nbpaqparmin=0;
System::Windows::Forms::DialogResult result;
result= MessageBox::Show( "le débit de la capture menace votre NHIDS voulez vous stopez la capture ? ",
"Alerte", MessageBoxButtons::YesNo, MessageBoxIcon::Warning);
if ( result == System::Windows::Forms::DialogResult::Yes)
{ timer5->Stop();
timer4->Stop();
newToolStripButton->Enabled=false;
openToolStripButton->Enabled=true;
button2->Enabled=true;
button1->Enabled=false;
}
}
else if ((cpttemps==1)&&(nbpaqparmin<30))
{ nbpaqparmin=0;
cpttemps=0;
//MessageBox::Show("le débit du paquet est trés élevé dans les 30 seconds");
}
label7->Text="Le nbre de packet est : "+Convert::ToString(c);
ListViewItem^ item1=gcnew ListViewItem(subItems);
array<ListViewItem^>^ items={item1};
if (str8->CompareTo("TCP")==0) {item1->SubItems[0]->BackColor = Color::LightGreen;}
if (str8->CompareTo("UDP")==0) {item1->SubItems[0]->BackColor = Color::LightBlue;}
if (str8->CompareTo("ICMP")==0) {item1->SubItems[0]->BackColor = Color::LightGray;}
if (str8->CompareTo("IGMP")==0) {item1->SubItems[0]->BackColor = Color::LightPink;}
listView2->Items->AddRange(items);
}
}
}
catch(Exception ^ e)
{
}
if(res == -1){
printf("Error reading the packets: %s\n", pcap_geterr(adhandle));
}
} |
comment lancer un timer a partir d'une méthode?
Répondre avec citation
Partager