int Dijkstra(NodeStruct *Map,int MapSize,int Start,int Finish)
{
//Start Dijkstra algorithm
VisitNode(Map, MapSize, Start, Finish);
//Trace found route of Dijkstra algorithm
return TraceRoute(Map, Finish);
}
void EvalTraceOpts(char * pOptions, int sockfd)
{
int idx,idx1,iFileNameCounter=0;
char fileName[200];
int bInvalidInput=FALSE;
int bFlag=FALSE;
int rate;
FILE *fp;
char sLine[200];
char cmd[200];
char logText[BUFSIZE] = "";
for (idx=0; idx <strlen(pOptions); idx++)
{
if (pOptions[idx] == ' ')
{
fileName[iFileNameCounter] = '\0';
bFlag=TRUE;
break;
}
else
fileName[iFileNameCounter++] = pOptions[idx];
}
if (!bFlag)
fileName[iFileNameCounter] = '\0';
for (idx1=idx; idx1 < strlen(pOptions); idx1++)
{
if(pOptions[idx1] == ' ')
continue;
else
bInvalidInput = TRUE;
}
if (bInvalidInput)
{
WriteToLog("Invalid traceroute options");
char message[] = "\nSome Extra characters in Traceroute command\n"
"Use 'HELP' to get assistance\n";
if (send(sockfd,message,strlen(message),0) != -1)
{}
//DisplayHelp(sockfd);
return;
}
if (strcmp(fileName,"me") == 0) {
for(idx=0;idx<active_sessions;idx++)
{
if(siUsers[idx].sockfd == sockfd)
{
rate = GetCmdRate(sockfd);
if(rate >=1 && rate <= gRateRequest ) {
TraceRoute(siUsers[idx].ip,siUsers[idx].sockfd);
}
else
{
snprintf(logText,BUFSIZE-1,
"Traceroute exceeded limit of %d per %d",gRateRequest,gRateDuration);
WriteToLog(logText);
char message[] = "\nMaximum number of requests exceeded."
" Please Wait for some time and try again\n";
if (send(sockfd,message,strlen(message),0) != -1)
{/*...*/}
}
return;
}
}
}
else
{
if((fp =fopen(fileName,"r")) == NULL)
{
bFlag = FALSE;
for (idx=0; idx<strlen(fileName); idx++) {
if (!(fileName[idx] == '.' || fileName[idx] == '-'
|| (fileName[idx] >= 48 && fileName[idx] <=57)
|| (fileName[idx] >= 65 && fileName[idx] <=90)
|| (fileName[idx] >= 97 && fileName[idx] <=122))) {
bFlag = TRUE;
}
}
if (bFlag)
{
char message[]="\nInvalid DNS/IP entered\n"
"Use 'HELP' to get assistance\n";
if (send(sockfd,message,strlen(message),0) != -1) {}
return;
}
bFlag = 1;
if (gStrictDest){
for(idx=0;idx<active_sessions;idx++)
{
if(siUsers[idx].sockfd == sockfd)
{
if (strcmp(fileName,siUsers[idx].ip) != 0) {
bFlag = 0;
break;
}
}
}
}
if(bFlag) {
rate = GetCmdRate(sockfd);
if(rate >=1 && rate <= gRateRequest ) {
TraceRoute(fileName, sockfd);
}
else
{
snprintf(logText,BUFSIZE-1,
"Traceroute per minute exceeded limit of %d",gRateRequest);
WriteToLog(logText);
char message[] = "\nMaximum number of requests exceeded."
" Please Wait for some time and try again\n";
if (send(sockfd,message,strlen(message),0) != -1)
{}
}
} else {
WriteToLog("STRICT_DEST Violation, alerting user");
char message[]="\nSrict Destination enabled by Server\n"
"Can traceroute to your ip only\n";
if (send(sockfd,message,strlen(message),0) != -1) {}
}
}
else
{
while (fscanf(fp,"%s %s",sLine,cmd) != EOF) {
printf("%s: %s\n",sLine,cmd);
rate = GetCmdRate(sockfd);
if(rate >=1 && rate <= gRateRequest )
{
TraceRoute(cmd, sockfd);
}
else
{
snprintf(logText,BUFSIZE-1,
"Traceroute per minute exceeded limit of %d",gRateRequest);
WriteToLog(logText);
char message[] = "\nMaximum number of requests exceeded."
" Please Wait for some time and try again\n";
if (send(sockfd,message,strlen(message),0) != -1)
{}
}
}
return;
}
}
}