static int add_prefixes_from_file(bgpstream_ip_counter_t *poi,
char *pfx_file_string)
{
char pfx_line[MAX_LOG_BUFFER_LEN];
io_t *file = NULL;
bgpstream_pfx_storage_t pfx_st;
if (pfx_file_string == NULL) {
return -1;
}
if ((file = wandio_create(pfx_file_string)) == NULL) {
fprintf(stderr, "ERROR: Could not open prefix file (%s)\n",
pfx_file_string);
return -1;
}
while (wandio_fgets(file, &pfx_line, MAX_LOG_BUFFER_LEN, 1) > 0) {
/* treat # as comment line, and ignore empty lines */
if (pfx_line[0] == '#' || pfx_line[0] == '\0') {
continue;
}
if (bgpstream_str2pfx(pfx_line, &pfx_st) == NULL ||
bgpstream_ip_counter_add(poi, (bgpstream_pfx_t *)&pfx_st) != 0) {
/* failed to parse/insert the prefix */
return -1;
}
}
wandio_destroy(file);
return 0;
}
/** Parse the arguments given to the plugin */
static int parse_args(bgpcorsaro_t *bgpcorsaro)
{
bgpcorsaro_plugin_t *plugin = PLUGIN(bgpcorsaro);
struct bgpcorsaro_pfxmonitor_state_t *state = STATE(bgpcorsaro);
int opt;
bgpstream_pfx_storage_t pfx_st;
if (plugin->argc <= 0) {
return 0;
}
/* NB: remember to reset optind to 1 before using getopt! */
optind = 1;
while ((opt = getopt(plugin->argc, plugin->argv, ":l:L:m:n:i:M?")) >= 0) {
switch (opt) {
case 'm':
if (optarg != NULL && strlen(optarg) - 1 <= PFXMONITOR_METRIC_PFX_LEN) {
strncpy(state->metric_prefix, optarg, PFXMONITOR_METRIC_PFX_LEN);
} else {
fprintf(stderr, "Error: could not set metric prefix\n");
usage(plugin);
return -1;
}
break;
case 'i':
if (optarg != NULL && strlen(optarg) - 1 <= PFXMONITOR_METRIC_PFX_LEN) {
strncpy(state->ip_space_name, optarg, PFXMONITOR_METRIC_PFX_LEN);
} else {
fprintf(stderr, "Error: could not set IP space name\n");
usage(plugin);
return -1;
}
break;
case 'l':
if (bgpstream_str2pfx(optarg, &pfx_st) == NULL) {
fprintf(stderr, "Error: Could not parse prefix (%s)\n", optarg);
usage(plugin);
return -1;
}
bgpstream_ip_counter_add(state->poi, (bgpstream_pfx_t *)&pfx_st);
break;
case 'L':
if (add_prefixes_from_file(state->poi, optarg) != 0) {
return -1;
}
break;
case 'M':
state->more_specific = 1;
break;
case 'n':
state->peer_asns_th = atoi(optarg);
break;
case '?':
case ':':
default:
usage(plugin);
return -1;
}
}
/* if no prefixes were provided, */
if (bgpstream_ip_counter_get_ipcount(state->poi,
BGPSTREAM_ADDR_VERSION_IPV4) == 0 &&
bgpstream_ip_counter_get_ipcount(state->poi,
BGPSTREAM_ADDR_VERSION_IPV6) == 0) {
fprintf(stderr, "Error: no valid prefixes provided\n");
usage(plugin);
return -1;
}
return 0;
}
void bgpstream_filter_mgr_filter_add(bgpstream_filter_mgr_t *bs_filter_mgr,
bgpstream_filter_type_t filter_type,
const char *filter_value)
{
bgpstream_str_set_t **v = NULL;
bgpstream_debug("\tBSF_MGR:: add_filter start");
if (bs_filter_mgr == NULL) {
return; // nothing to customize
}
switch (filter_type) {
case BGPSTREAM_FILTER_TYPE_ELEM_PEER_ASN:
if (bs_filter_mgr->peer_asns == NULL) {
if ((bs_filter_mgr->peer_asns = bgpstream_id_set_create()) == NULL) {
bgpstream_debug("\tBSF_MGR:: add_filter malloc failed");
bgpstream_log_warn("\tBSF_MGR: can't allocate memory");
return;
}
}
bgpstream_id_set_insert(bs_filter_mgr->peer_asns,
(uint32_t)strtoul(filter_value, NULL, 10));
return;
case BGPSTREAM_FILTER_TYPE_ELEM_TYPE:
if (strcmp(filter_value, "ribs") == 0) {
bs_filter_mgr->elemtype_mask |= (BGPSTREAM_FILTER_ELEM_TYPE_RIB);
} else if (strcmp(filter_value, "announcements") == 0) {
bs_filter_mgr->elemtype_mask |= (BGPSTREAM_FILTER_ELEM_TYPE_ANNOUNCEMENT);
} else if (strcmp(filter_value, "withdrawals") == 0) {
bs_filter_mgr->elemtype_mask |= (BGPSTREAM_FILTER_ELEM_TYPE_WITHDRAWAL);
} else if (strcmp(filter_value, "peerstates") == 0) {
bs_filter_mgr->elemtype_mask |= (BGPSTREAM_FILTER_ELEM_TYPE_PEERSTATE);
} else {
bgpstream_log_warn("\tBSF_MGR: %s is not a known element type",
filter_value);
}
return;
case BGPSTREAM_FILTER_TYPE_ELEM_ASPATH:
if (bs_filter_mgr->aspath_exprs == NULL) {
if ((bs_filter_mgr->aspath_exprs = bgpstream_str_set_create()) == NULL) {
bgpstream_debug("\tBSF_MGR:: add_filter malloc failed");
bgpstream_log_warn("\tBSF_MGR: can't allocate memory");
return;
}
}
bgpstream_str_set_insert(bs_filter_mgr->aspath_exprs, filter_value);
return;
case BGPSTREAM_FILTER_TYPE_ELEM_PREFIX:
case BGPSTREAM_FILTER_TYPE_ELEM_PREFIX_MORE:
case BGPSTREAM_FILTER_TYPE_ELEM_PREFIX_LESS:
case BGPSTREAM_FILTER_TYPE_ELEM_PREFIX_EXACT:
case BGPSTREAM_FILTER_TYPE_ELEM_PREFIX_ANY: {
bgpstream_pfx_storage_t pfx;
uint8_t matchtype;
if (bs_filter_mgr->prefixes == NULL) {
if ((bs_filter_mgr->prefixes = bgpstream_patricia_tree_create(NULL)) ==
NULL) {
bgpstream_debug("\tBSF_MGR:: add_filter malloc failed");
bgpstream_log_warn("\tBSF_MGR: can't allocate memory");
return;
}
}
bgpstream_str2pfx(filter_value, &pfx);
if (filter_type == BGPSTREAM_FILTER_TYPE_ELEM_PREFIX_MORE ||
filter_type == BGPSTREAM_FILTER_TYPE_ELEM_PREFIX) {
matchtype = BGPSTREAM_PREFIX_MATCH_MORE;
} else if (filter_type == BGPSTREAM_FILTER_TYPE_ELEM_PREFIX_LESS) {
matchtype = BGPSTREAM_PREFIX_MATCH_LESS;
} else if (filter_type == BGPSTREAM_FILTER_TYPE_ELEM_PREFIX_EXACT) {
matchtype = BGPSTREAM_PREFIX_MATCH_EXACT;
} else {
matchtype = BGPSTREAM_PREFIX_MATCH_ANY;
}
pfx.allowed_matches = matchtype;
if (bgpstream_patricia_tree_insert(bs_filter_mgr->prefixes,
(bgpstream_pfx_t *)&pfx) == NULL) {
bgpstream_debug("\tBSF_MGR:: add_filter malloc failed");
bgpstream_log_warn("\tBSF_MGR: can't add prefix");
return;
}
return;
}
case BGPSTREAM_FILTER_TYPE_ELEM_COMMUNITY: {
int mask = 0;
khiter_t k;
int khret;
bgpstream_community_t comm;
if (bs_filter_mgr->communities == NULL) {
if ((bs_filter_mgr->communities = kh_init(bgpstream_community_filter)) ==
NULL) {
bgpstream_debug("\tBSF_MGR:: add_filter malloc failed");
bgpstream_log_warn("\tBSF_MGR: can't allocate memory");
return;
}
}
if ((mask = bgpstream_str2community(filter_value, &comm)) < 0) {
bgpstream_debug("\tBSF_MGR:: can't convert community");
return;
}
if ((k = kh_get(bgpstream_community_filter, bs_filter_mgr->communities,
comm)) == kh_end(bs_filter_mgr->communities)) {
k = kh_put(bgpstream_community_filter, bs_filter_mgr->communities, comm,
&khret);
kh_value(bs_filter_mgr->communities, k) = mask;
}
/* we use the AND because the less restrictive filter wins over the more
* restrictive:
* e.g. 10:0, 10:* is equivalent to 10:*
*/
kh_value(bs_filter_mgr->communities, k) =
kh_value(bs_filter_mgr->communities, k) & mask;
/* DEBUG: fprintf(stderr, "%s - %d\n",
* filter_value, kh_value(bs_filter_mgr->communities, k) );
*/
return;
}
case BGPSTREAM_FILTER_TYPE_ELEM_IP_VERSION:
if (strcmp(filter_value, "4") == 0) {
bs_filter_mgr->ipversion = BGPSTREAM_ADDR_VERSION_IPV4;
} else if (strcmp(filter_value, "6") == 0) {
bs_filter_mgr->ipversion = BGPSTREAM_ADDR_VERSION_IPV6;
} else {
bgpstream_log_warn("\tBSF_MGR: Unknown IP version %s, ignoring",
filter_value);
}
return;
case BGPSTREAM_FILTER_TYPE_PROJECT:
v = &bs_filter_mgr->projects;
break;
case BGPSTREAM_FILTER_TYPE_COLLECTOR:
v = &bs_filter_mgr->collectors;
break;
case BGPSTREAM_FILTER_TYPE_RECORD_TYPE:
v = &bs_filter_mgr->bgp_types;
break;
default:
bgpstream_log_warn("\tBSF_MGR: unknown filter - ignoring");
return;
}
if (*v == NULL) {
if ((*v = bgpstream_str_set_create()) == NULL) {
bgpstream_debug("\tBSF_MGR:: add_filter malloc failed");
bgpstream_log_warn("\tBSF_MGR: can't allocate memory");
return;
}
}
bgpstream_str_set_insert(*v, filter_value);
bgpstream_debug("\tBSF_MGR:: add_filter stop");
return;
}
int test_val_res_struct()
{
uint32_t asn = TEST_PFX_ASN;
uint8_t max_pfx_len = TEST_PFX_MAX_LEN;
bgpstream_ipv4_addr_t pfxv4;
bgpstream_str2pfx(IPV4_TEST_PFX_A, (bgpstream_pfx_storage_t *)&pfxv4);
bgpstream_rpki_validation_result_t val_table;
bgpstream_rpki_validation_result_init(&val_table, 2);
CHECK("RTR: Compare max size after init", val_table.asn_size == 2);
CHECK("RTR: Compare used asn size after init", val_table.asn_used == 0);
CHECK("RTR: Compare asn_pfx pointer address after init",
val_table.asn_pfx != NULL);
/*
the sequence to calculate the memory size is:
max(2, 2**(ceil(log(X + 1) / log(2))))
where X is the number of added elements
*/
size_t memory_test_sizes[10] = {2, 2, 4, 4, 8, 8, 8, 8, 16, 16};
int x;
for (x = 0; x < 10; x++) {
bgpstream_rpki_validation_result_insert_asn(&val_table, asn + x);
CHECK("RTR: Compare used asn size after adding asn",
val_table.asn_used == (x + 1));
CHECK("RTR: Compare max asn size after adding asn",
val_table.asn_size == memory_test_sizes[x]);
CHECK("RTR: Compare asn in prefix array after adding asn",
val_table.asn_pfx[x].asn == (asn + x));
CHECK("RTR: Compare number of used prefix after adding asn",
val_table.asn_pfx[x].pfx_used == 0);
CHECK("RTR: Compare max number of prefix after adding asn",
val_table.asn_pfx[x].pfx_size == 2);
bgpstream_rpki_validation_result_insert_asn(&val_table, asn + x);
CHECK("RTR: Compare used asn size after adding duplicate asn",
val_table.asn_used == (x + 1));
CHECK("RTR: Compare max asn size after adding duplicate asn",
val_table.asn_size == memory_test_sizes[x]);
CHECK("RTR: Compare number of used prefix after adding asn",
val_table.asn_pfx[x].pfx_used == 0);
CHECK("RTR: Compare max number of prefix after adding asn",
val_table.asn_pfx[x].pfx_size == 2);
int y;
for (y = 0; y < 10; y++) {
bgpstream_rpki_validation_result_insert_pfx(
&val_table, asn + x, (bgpstream_pfx_t *)&pfxv4, max_pfx_len - y);
CHECK("RTR: Compare used asn size after adding prefix",
val_table.asn_used == (x + 1));
CHECK("RTR: Compare max asn size after adding prefix",
val_table.asn_size == memory_test_sizes[x]);
CHECK("RTR: Compare asn after adding prefix",
val_table.asn_pfx[x].asn == (asn + x));
CHECK("RTR: Compare number of used prefix of asn after adding prefix",
val_table.asn_pfx[x].pfx_used == (y + 1));
CHECK("RTR: Compare max number of prefix of asn after adding prefix",
val_table.asn_pfx[x].pfx_size == memory_test_sizes[y]);
CHECK("RTR: Compare prefix in prefix array of asn after adding prefix",
inet_ntoa(val_table.asn_pfx[x].pfxs[y].pfx.address.ipv4) ==
inet_ntoa(pfxv4.ipv4));
CHECK("RTR: Compare max len of prefix of asn after adding prefix",
val_table.asn_pfx[x].pfxs[y].max_pfx_len == (max_pfx_len - y));
bgpstream_rpki_validation_result_insert_pfx(
&val_table, asn + x, (bgpstream_pfx_t *)&pfxv4, max_pfx_len - y);
CHECK("RTR: Compare used asn size after adding duplicate prefix",
val_table.asn_used == (x + 1));
CHECK("RTR: Compare max asn size after adding duplicate prefix",
val_table.asn_size == memory_test_sizes[x]);
CHECK("RTR: Compare asn after adding duplicate prefix",
val_table.asn_pfx[x].asn == (asn + x));
CHECK("RTR: Compare number of used prefix of asn after adding duplicate "
"prefix",
val_table.asn_pfx[x].pfx_used == (y + 1));
CHECK("RTR: Compare max number of prefix of asn after adding duplicate "
"prefix",
val_table.asn_pfx[x].pfx_size == memory_test_sizes[y]);
CHECK("RTR: Compare prefix in prefix array of asn after adding duplicate "
"prefix",
inet_ntoa(val_table.asn_pfx[x].pfxs[y].pfx.address.ipv4) ==
inet_ntoa(pfxv4.ipv4));
CHECK(
"RTR: Compare max len of prefix of asn after adding duplicate prefix",
val_table.asn_pfx[x].pfxs[y].max_pfx_len == (max_pfx_len - y));
}
}
bgpstream_rpki_validation_result_free(&val_table);
return 0;
}