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ProtList.cc
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// File: ProtList.cc
// David E. Taylor
// Applied Research Laboratory
// Department of Computer Science and Engineering
// Washington University in Saint Louis
// det3@arl.wustl.edu
//
// Class definition for ProtList
#include "stdinc.h"
#include "ProtList.h"
ProtList::ProtList() {
N = 25;
protocols = new struct protocol[N];
first = -1;
last = -1;
for (int i = 0; i < N; i++) {
protocols[i].prot_num = 0;
protocols[i].prob = 0;
protocols[i].pt_prob = new float[25];
for (int j = 0; j < 25; j++) protocols[i].pt_prob[j] = 0;
}
}
ProtList::~ProtList() {
for (int i = 0; i < 25; i++) delete protocols[i].pt_prob;
delete protocols;
}
void ProtList::read(FILE *fp) {
int done = 0;
int matches = 0;
char comm[7];
char prots_comm[]="-prots";
// read in port width/range
while (matches != EOF && done == 0) {
matches = fscanf(fp,"%s",comm);
// printf("comm = %s\n",comm);
if (strcmp(comm,prots_comm) == 0) done = 1;
}
if (matches == EOF) {
fprintf(stderr,"Warning: Could not find -prots identifier.\nNo protocol information taken from parameter file.\n");
return;
}
done = 0;
first = 0;
for (int i=0; i<N && done == 0; i++){
matches = fscanf(fp,"%d\t%f\t%f\t%f\t%f\t%f\t%f\t%f\t%f\t%f\t%f\t%f\t%f\t%f\t%f\t%f\t%f\t%f\t%f\t%f\t%f\t%f\t%f\t%f\t%f\t%f\t%f",
&protocols[i].prot_num,&protocols[i].prob,
&protocols[i].pt_prob[0],&protocols[i].pt_prob[1], &protocols[i].pt_prob[2], &protocols[i].pt_prob[3], &protocols[i].pt_prob[4],
&protocols[i].pt_prob[5], &protocols[i].pt_prob[6], &protocols[i].pt_prob[7], &protocols[i].pt_prob[8], &protocols[i].pt_prob[9],
&protocols[i].pt_prob[10],&protocols[i].pt_prob[11],&protocols[i].pt_prob[12],&protocols[i].pt_prob[13],&protocols[i].pt_prob[14],
&protocols[i].pt_prob[15],&protocols[i].pt_prob[16],&protocols[i].pt_prob[17],&protocols[i].pt_prob[18],&protocols[i].pt_prob[19],
&protocols[i].pt_prob[20],&protocols[i].pt_prob[21],&protocols[i].pt_prob[22],&protocols[i].pt_prob[23],&protocols[i].pt_prob[24]);
// printf("protocols[%d].prot_num = %d\nprotocols[%d].prob = %.4f\n",i,protocols[i].prot_num,i,protocols[i].prob);
// printf("matches = %d\n",matches);
if (matches == 27) last = i;
else done = 1;
}
// printf("first = %d, last = %d\n",first,last);
// print(stdout);
float prot_prob = 0;
float port_prob = 0;
// Build cummulative distributions
for (int i = 0; i <= last; i++) {
// Cummulative protocol distribution
if (i == last) protocols[i].prob = 1;
else protocols[i].prob += prot_prob;
prot_prob = protocols[i].prob;
// printf("prot_prob = %f\n",prot_prob);
// Cummulative port type distribution
port_prob = 0;
for (int j = 0; j < 25; j++){
if (j == 24) protocols[i].pt_prob[j] = 1;
else protocols[i].pt_prob[j] += port_prob;
port_prob = protocols[i].pt_prob[j];
// printf("\tport_prob = %f, protocols[%d].pt_prob[%d] = %f\n",port_prob,i,j,protocols[i].pt_prob[j]);
}
// print(stdout);
}
// print(stdout);
return;
}
int ProtList::choose_prot(float r) {
int prot = -1;
int done = 0;
for (int i = 0; (i <= last && done == 0); i++) {
if (r <= protocols[i].prob) {
prot = protocols[i].prot_num;
done = 1;
}
}
return prot;
}
int ProtList::choose_ports(float r, int prot) {
int ptype = -1;
int done = 0;
int pr = -1;
// Find protocol in list
for (int i = 0; (i <= last && done == 0); i++) {
if (prot == protocols[i].prot_num) {
pr = i;
done = 1;
}
}
if (done == 0) {
fprintf(stderr,"ERROR (ProtList::choose_ports): protocol number not found in list");
exit(1);
}
done = 0;
for (int i = 0; (i < 25 && done == 0); i++) {
if (r <= protocols[pr].pt_prob[i]) {
ptype = i;
done = 1;
}
}
return ptype;
}
void ProtList::print(FILE *fp) {
printf("last = %d\n",last);
fprintf(fp,"Protocol Distribution with Port Types\n");
fprintf(fp,"prot\tFreq.\t");
fprintf(fp,"wc-wc\twc-hi\thi-wc\thi-hi\twc-lo\t");
fprintf(fp,"lo-wc\thi-lo\tlo-hi\tlo-lo\twc-ar\t");
fprintf(fp,"ar-wc\thi-ar\tar-hi\twc-em\tem-wc\t");
fprintf(fp,"hi-em\tem-hi\tlo-ar\tar-lo\tlo-em\t");
fprintf(fp,"em-lo\tar-ar\tar-em\tem-ar\tem-em\n");
for (int i = 0; i <= last; i++) {
fprintf(fp,"%d\t%.4f\t%.4f\t%.4f\t%.4f\t%.4f\t%.4f\t%.4f\t%.4f\t%.4f\t%.4f\t%.4f\t%.4f\t%.4f\t%.4f\t%.4f\t%.4f\t%.4f\t%.4f\t%.4f\t%.4f\t%.4f\t%.4f\t%.4f\t%.4f\t%.4f\t%.4f\n",
protocols[i].prot_num,protocols[i].prob,
protocols[i].pt_prob[0], protocols[i].pt_prob[1], protocols[i].pt_prob[2], protocols[i].pt_prob[3], protocols[i].pt_prob[4],
protocols[i].pt_prob[5], protocols[i].pt_prob[6], protocols[i].pt_prob[7], protocols[i].pt_prob[8], protocols[i].pt_prob[9],
protocols[i].pt_prob[10],protocols[i].pt_prob[11],protocols[i].pt_prob[12],protocols[i].pt_prob[13],protocols[i].pt_prob[14],
protocols[i].pt_prob[15],protocols[i].pt_prob[16],protocols[i].pt_prob[17],protocols[i].pt_prob[18],protocols[i].pt_prob[19],
protocols[i].pt_prob[20],protocols[i].pt_prob[21],protocols[i].pt_prob[22],protocols[i].pt_prob[23],protocols[i].pt_prob[24]);
}
return;
}
int ProtList::size(){
return last+1;
}
int ProtList::operator()(int i){
return protocols[i].prot_num;
}