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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));
}
} |
