void history_rotate() {
hash_node_type* n = NULL;
history_pos = (history_pos + 1) % HISTORY_LENGTH;
hash_next_item(history, &n);
while(n != NULL) {
hash_node_type* next = n;
history_type* d = (history_type*)n->rec;
hash_next_item(history, &next);
if(d->last_write == history_pos) {
addr_pair key = *(addr_pair*)(n->key);
hash_delete(history, &key);
free(d);
}
else {
d->recv[history_pos] = 0;
d->sent[history_pos] = 0;
}
n = next;
}
history_totals.sent[history_pos] = 0;
history_totals.recv[history_pos] = 0;
if(history_len < HISTORY_LENGTH) {
history_len++;
}
}
/*
* Zeros all data in the screen hash, but does not remove items.
*/
void screen_hash_clear() {
hash_node_type* n = NULL;
while(hash_next_item(screen_hash, &n) == HASH_STATUS_OK) {
host_pair_line* hpl = (host_pair_line*)n->rec;
hpl->total_recv = hpl->total_sent = 0;
memset(hpl->recv, 0, sizeof(hpl->recv));
memset(hpl->sent, 0, sizeof(hpl->sent));
}
}
void make_screen_list() {
hash_node_type* n = NULL;
while(hash_next_item(screen_hash, &n) == HASH_STATUS_OK) {
host_pair_line* line = (host_pair_line*)n->rec;
int i;
for(i = 0; i < HISTORY_DIVISIONS; i++) {
line->recv[i] /= history_length(i);
line->sent[i] /= history_length(i);
}
/* Don't make a new, sorted screen list if order is frozen
*/
if(!options.freezeorder) {
sorted_list_insert(&screen_list, line);
}
}
}
void analyse_data() {
hash_node_type* n = NULL;
if(options.paused == 1) {
return;
}
// Zero totals
memset(&totals, 0, sizeof totals);
if(options.freezeorder) {
screen_hash_clear();
}
else {
screen_list_clear();
hash_delete_all(screen_hash);
}
while(hash_next_item(history, &n) == HASH_STATUS_OK) {
history_type* d = (history_type*)n->rec;
host_pair_line* screen_line;
union {
host_pair_line **h_p_l_pp;
void **void_pp;
} u_screen_line = { &screen_line };
addr_pair ap;
int i;
int tsent, trecv;
tsent = trecv = 0;
ap = *(addr_pair*)n->key;
/* Aggregate hosts, if required */
if(options.aggregate_src) {
memset(&ap.src6, '\0', sizeof(ap.src6));
}
if(options.aggregate_dest) {
memset(&ap.dst6, '\0', sizeof(ap.dst6));
}
/* Aggregate ports, if required */
if(options.showports == OPTION_PORTS_DEST || options.showports == OPTION_PORTS_OFF) {
ap.src_port = 0;
}
if(options.showports == OPTION_PORTS_SRC || options.showports == OPTION_PORTS_OFF) {
ap.dst_port = 0;
}
if(options.showports == OPTION_PORTS_OFF) {
ap.protocol = 0;
}
if(hash_find(screen_hash, &ap, u_screen_line.void_pp) == HASH_STATUS_KEY_NOT_FOUND) {
screen_line = xcalloc(1, sizeof *screen_line);
hash_insert(screen_hash, &ap, screen_line);
screen_line->ap = ap;
}
screen_line->total_sent += d->total_sent;
screen_line->total_recv += d->total_recv;
for(i = 0; i < HISTORY_LENGTH; i++) {
int j;
int ii = (HISTORY_LENGTH + history_pos - i) % HISTORY_LENGTH;
for(j = 0; j < HISTORY_DIVISIONS; j++) {
if(i < history_divs[j]) {
screen_line->recv[j] += d->recv[ii];
screen_line->sent[j] += d->sent[ii];
}
}
}
}
make_screen_list();
calculate_totals();
}
