/**
* Calculate the number of hosts covered by the ranges in the database.
*
* @param db the IP range database
* @return The number of hosts listed.
*/
guint
iprange_get_host_count(const struct iprange_db *idb)
{
size_t i, n;
guint hosts = 0;
n = iprange_get_item_count(idb);
for (i = 0; i < n; i++) {
struct iprange_net *item = sorted_array_item(idb->tab, i);
hosts += ~item->mask + 1;
}
return hosts;
}
/**
* Load bogons data from the supplied FILE.
*
* @returns the amount of entries loaded.
*/
static G_GNUC_COLD int
bogons_load(FILE *f)
{
char line[1024];
uint32 ip, netmask;
int linenum = 0;
int bits;
iprange_err_t error;
filestat_t buf;
bogons_db = iprange_new();
if (-1 == fstat(fileno(f), &buf)) {
g_warning("cannot stat %s: %m", bogons_file);
} else {
bogons_mtime = buf.st_mtime;
}
while (fgets(line, sizeof line, f)) {
linenum++;
/*
* Remove all trailing spaces in string.
* Otherwise, lines which contain only spaces would cause a warning.
*/
if (!file_line_chomp_tail(line, sizeof line, NULL)) {
g_warning("%s, line %d: too long a line", bogons_file, linenum);
break;
}
if (file_line_is_skipable(line))
continue;
if (!string_to_ip_and_mask(line, &ip, &netmask)) {
g_warning("%s, line %d: invalid IP or netmask \"%s\"",
bogons_file, linenum, line);
continue;
}
bits = netmask_to_cidr(netmask);
error = iprange_add_cidr(bogons_db, ip, bits, 1);
switch (error) {
case IPR_ERR_OK:
break;
/* FALL THROUGH */
default:
g_warning("%s, line %d: rejected entry \"%s\" (%s/%d): %s",
bogons_file, linenum, line, ip_to_string(ip), bits,
iprange_strerror(error));
continue;
}
}
iprange_sync(bogons_db);
if (GNET_PROPERTY(reload_debug)) {
g_debug("loaded %u bogus IP ranges (%u hosts)",
iprange_get_item_count(bogons_db),
iprange_get_host_count4(bogons_db));
}
return iprange_get_item_count(bogons_db);
}
