double avg_time_ms() const
{
return avg_time() * 1e3;
}
int main(int argc, char **argv){
if(argc<2){
printf("Usage: ./trace domain \n for example: ./trace www.utdallas.edu\n");
exit(0);
}
char command[200];
strcpy(command, "traceroute ");
strcat(command, argv[1]);
strcat(command, " > output.txt");
system(command);
FILE * fp;
char * line = NULL;
size_t len = 0;
ssize_t read;
char *token;
char delimiter[5] = " (),";
char* strArray[12];
fp = fopen("output.txt", "r"); // open file
if (fp == NULL)
exit(EXIT_FAILURE);
int line_number = 0;
int currentLine = 0;
int tokenNumber = 0;
float time[3];
float min, max, avg;
while ((read = getline(&line, &len, fp)) != -1) { //while line present do following
printf("%s", line);
tokenNumber = 0;
token = strtok(line, delimiter); // token separated
if(currentLine == 0)
{
//code for fist line
while(token != NULL)
{
strArray[tokenNumber] = (char*)malloc(strlen(token) + 1);
strcpy(strArray[tokenNumber], token); //token copy
tokenNumber++;
token = strtok(NULL, delimiter);
}
printf("DNS = %s\nIP = %s\n\n",strArray[2],strArray[3]);
currentLine++;
}
else
{
//code for other lines
while(token != NULL)
{
strArray[tokenNumber] = (char*)malloc(strlen(token) + 1);
strcpy(strArray[tokenNumber], token);
if(tokenNumber == 3)
{
time[0] = atof(strArray[tokenNumber]); //time token saved by converting it to float
}
if(tokenNumber == 5)
{
time[1] = strtod(strArray[tokenNumber],NULL); //time token saved by converting it to float
}
if(tokenNumber == 7)
{
time[2] = strtod(strArray[tokenNumber],NULL); //time token saved by converting it to float
}
tokenNumber++;
token = strtok(NULL, delimiter);
}
min = min_time(time, 3); //find min
max = max_time(time, 3); // find max
avg = avg_time(time, 3); // find avg
printf("DNS = %s\nIP = %s\n",strArray[1],strArray[2]);
printf( "time 1 = %f, time 2 = %f, time 3 = %f\n",time[0], time[1], time[2]);
printf( "min time = %f\nmax time = %f\navg time = %f\n\n",min, max, avg);
}
}
fclose(fp); //close file
printf(" ** end of mytrace program ** \n");
}
