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// NetRangerLog.cpp: implementation of the CNetRangerLog class.
//
//////////////////////////////////////////////////////////////////////
#include <stdio.h>
#include <string.h>
#include "IDSLog.h"
#include "NetRangerLog.h"
//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
CNetRangerLog::CNetRangerLog()
{
}
CNetRangerLog::~CNetRangerLog()
{
}
void CNetRangerLog::IDSVersion (char *sIDSProduct, int& nIDSID, int& nIDSMajor, int& nIDSMinor, char *sIDSRev) const
{
strcpy (sIDSProduct, "NetRanger");
nIDSID = 4;
nIDSMajor = 0;
nIDSMinor = 0;
sIDSRev[0] = '\0';
}
bool CNetRangerLog::LastIncident ()
{
return feof (m_pLogFile) != 0;
}
// #Severity, timestamp (GMT), issueId, issueName, intruderIp, intruderName, victimIp, victimName, parameters, count
bool CNetRangerLog::ReadIncident ()
{
char sLineBuffer[LOG_STRLEN + 1], sIP[16 + 1], sTmp[LOG_STRLEN + 1],
sDate[LOG_STRLEN + 1], sTime[LOG_STRLEN + 1];
int yr, mt, dy, hr, mn, sc;
int ip1, ip2, ip3, ip4, nPort, rectype, nID, nSubID;
while (!feof (m_pLogFile))
{
if (fgets (sLineBuffer, LOG_STRLEN, m_pLogFile) != sLineBuffer)
break;
int len = strlen (sLineBuffer);
int i = 0;
// recordtype field
int n = 0;
while (n < LOG_STRLEN)
{
if ((i < len) && (sLineBuffer[i] != ','))
sTmp[n++] = sLineBuffer[i++];
else
break;
}
sTmp[n] = '\0';
if (sscanf (sTmp, "%d", &rectype) == 1)
{
if (rectype != 4)
continue; // skip non-Event recordtypes
}
else
continue; // skip non-Event recordtypes
while ((i < len) && (sLineBuffer[i] != ','))
i++;
i+=1;
// skip recordid field
while ((i < len) && (sLineBuffer[i] != ','))
i++;
i+=1;
// GMT Datestamp field
n = 0;
while (n < LOG_STRLEN)
{
if ((i < len) && (sLineBuffer[i] != ','))
sDate[n++] = sLineBuffer[i++];
else
break;
}
sDate[n] = '\0';
int nDateParsed = sscanf (sDate, "%d/%d/%d", &yr, &mt, &dy);
while ((i < len) && (sLineBuffer[i] != ','))
i++;
i+=1;
// GMT Timestamp field
n = 0;
while (n < LOG_STRLEN)
{
if ((i < len) && (sLineBuffer[i] != ','))
sTime[n++] = sLineBuffer[i++];
else
break;
}
sTime[n] = '\0';
int nTimeParsed = sscanf (sTime, "%d:%d:%d", &hr, &mn, &sc);
while ((i < len) && (sLineBuffer[i] != ','))
i++;
i+=1;
if (nDateParsed == 3 && nTimeParsed == 3)
{
m_nDateTime = GetDate (yr, mt, dy, hr, mn, sc, 0);
}
else
m_nDateTime = 0.0;
// compare date
if (m_nDateTime <= m_nStartDate)
{
m_bSkippedRecords = true;
continue;
}
else if (m_nDateTime > m_nLastDate)
m_nLastDate = m_nDateTime;
// skip local Date/Timestamp, Application ID, Host ID, Org ID, Direction, Alarm fields
for (int j = 0; j < 8; j++)
{
while ((i < len) && (sLineBuffer[i] != ','))
i++;
i+=1;
}
// id field
n = 0;
while (n < LOG_STRLEN)
{
if ((i < len) && (sLineBuffer[i] != ','))
sTmp[n++] = sLineBuffer[i++];
else
break;
}
sTmp[n] = '\0';
if (sscanf (sTmp, "%u", &nID) != 1)
nID = 0;
while ((i < len) && (sLineBuffer[i] != ','))
i++;
i+=1;
// subsigid field. meaning depends on ID number.
if (nID == 8000)
{
n = 0;
while (n < LOG_STRLEN)
{
if ((i < len) && (sLineBuffer[i] != ','))
sTmp[n++] = sLineBuffer[i++];
else
break;
}
sTmp[n] = '\0';
if (sscanf (sTmp, "%u", &nSubID) != 1)
nSubID = 0;
// build ID number
if (nSubID)
sprintf (m_sID, "%u-%u", nID, nSubID);
else
sprintf (m_sID, "%u", nID);
}
else
sprintf (m_sID, "%u", nID);
while ((i < len) && (sLineBuffer[i] != ','))
i++;
i+=1;
// protocol field <== ALWAYS TCP
n = 0;
while (n < LOG_STRLEN)
{
if ((i < len) && (sLineBuffer[i] != ','))
sTmp[n++] = sLineBuffer[i++];
else
break;
}
sTmp[n] = '\0';
if (strcmp (sTmp, "TCP/IP") == 0)
m_nProtocol = PROTO_TCP;
else
m_nProtocol = 0;
while ((i < len) && (sLineBuffer[i] != ','))
i++;
i+=1;
// src IP field
n = 0;
while (n < 16)
{
if ((i < len) && (sLineBuffer[i] != ','))
sIP[n++] = sLineBuffer[i++];
else
break;
}
sIP[n] = '\0';
if (sscanf (sIP, "%d.%d.%d.%d", &ip1, &ip2, &ip3, &ip4) == 4)
{
unsigned char *octets = (unsigned char *)&m_nFromIP;
octets[0] = (unsigned char) (ip1 & 0xff);
octets[1] = (unsigned char) (ip2 & 0xff);
octets[2] = (unsigned char) (ip3 & 0xff);
octets[3] = (unsigned char) (ip4 & 0xff);
}
else
m_nFromIP = 0;
while ((i < len) && (sLineBuffer[i] != ','))
i++;
i+=1;
// dest IP field
n = 0;
while (n < 16)
{
if ((i < len) && (sLineBuffer[i] != ','))
sIP[n++] = sLineBuffer[i++];
else
break;
}
sIP[n] = '\0';
if (sscanf (sIP, "%d.%d.%d.%d", &ip1, &ip2, &ip3, &ip4) == 4)
{
unsigned char *octets = (unsigned char *)&m_nToIP;
octets[0] = (unsigned char) (ip1 & 0xff);
octets[1] = (unsigned char) (ip2 & 0xff);
octets[2] = (unsigned char) (ip3 & 0xff);
octets[3] = (unsigned char) (ip4 & 0xff);
}
else
m_nToIP = 0;
while ((i < len) && (sLineBuffer[i] != ','))
i++;
i+=1;
// fromport field
n = 0;
while (n < LOG_STRLEN)
{
if ((i < len) && (sLineBuffer[i] != ','))
sTmp[n++] = sLineBuffer[i++];
else
break;
}
sTmp[n] = '\0';
if (sscanf (sTmp, "%d", &nPort) == 1)
m_nFromPort = nPort;
else
m_nFromPort = 0;
while ((i < len) && (sLineBuffer[i] != ','))
i++;
i+=1;
// toport field
n = 0;
while (n < LOG_STRLEN)
{
if ((i < len) && (sLineBuffer[i] != ','))
sTmp[n++] = sLineBuffer[i++];
else
break;
}
sTmp[n] = '\0';
if (sscanf (sTmp, "%d", &nPort) == 1)
m_nToPort = nPort;
else
m_nToPort = 0;
m_nCount = 1;
return true;
}
return false;
}
void CNetRangerLog::CloseLog ()
{
fclose (m_pLogFile);
}
bool CNetRangerLog::OpenLog (const char *filename)
{
m_pLogFile = fopen (filename, "r");
m_bSkippedRecords = false;
return m_pLogFile != NULL;
}
void CNetRangerLog::SeekLog (double nDate)
{
m_nStartDate = nDate;
m_nLastDate = nDate;
}
double CNetRangerLog::GetLastDate ()
{
return m_nLastDate;
}
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