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added support for libbgpstream -J option to filter peers by ASN #32

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added support for libbgpstream -J option to filter peers by ASN #32

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26 changes: 24 additions & 2 deletions lib/io/bsrt/bgpview_io_bsrt.c
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Original file line number Diff line number Diff line change
Expand Up @@ -638,6 +638,7 @@ static int parse_args(bgpview_io_bsrt_t *bsrt, int argc, char **argv)
#define PREFIX_CMD_CNT 1000
#define COMMUNITY_CMD_CNT 1000
#define PEERASN_CMD_CNT 1000
#define NOT_PEERASN_CMD_CNT 1000
#define WINDOW_CMD_CNT 1024
#define OPTION_CMD_CNT 1024

Expand All @@ -657,6 +658,9 @@ static int parse_args(bgpview_io_bsrt_t *bsrt, int argc, char **argv)
char *peerasns[PEERASN_CMD_CNT];
int peerasns_cnt = 0;

char *not_peerasns[NOT_PEERASN_CMD_CNT];
int not_peerasns_cnt = 0;

char *prefixes[PREFIX_CMD_CNT];
int prefixes_cnt = 0;

Expand All @@ -675,7 +679,7 @@ static int parse_args(bgpview_io_bsrt_t *bsrt, int argc, char **argv)
optind = 1;

/* remember the argv strings DO NOT belong to us */
while ((opt = getopt(argc, argv, "d:o:p:c:t:w:j:k:y:P:i:ag:lLB:n:O:r:R:h")) >= 0) {
while ((opt = getopt(argc, argv, "d:o:p:c:t:w:j:J:k:y:P:i:ag:lLB:n:O:r:R:h")) >= 0) {
switch (opt) {
case 'd':
if (strcmp(optarg, "test") == 0) {
Expand Down Expand Up @@ -760,6 +764,17 @@ static int parse_args(bgpview_io_bsrt_t *bsrt, int argc, char **argv)
peerasns[peerasns_cnt++] = strdup(optarg);
break;

case 'J':
if (not_peerasns_cnt == NOT_PEERASN_CMD_CNT) {
fprintf(stderr, "ERROR: A maximum of %d not peer asns can be specified on "
"the command line\n",
NOT_PEERASN_CMD_CNT);
usage(bsrt);
exit(-1);
}
not_peerasns[not_peerasns_cnt++] = strdup(optarg);
break;

case 'k':
if (prefixes_cnt == PREFIX_CMD_CNT) {
fprintf(stderr, "ERROR: A maximum of %d peer asns can be specified on "
Expand Down Expand Up @@ -859,7 +874,7 @@ static int parse_args(bgpview_io_bsrt_t *bsrt, int argc, char **argv)

if (bsrt_get_next_record == test_get_next_record) {
if (projects_cnt || types_cnt || collectors_cnt || windows_cnt ||
peerasns_cnt || prefixes_cnt || communities_cnt ||
not_peerasns_cnt || peerasns_cnt || prefixes_cnt || communities_cnt ||
interface_options_cnt || rib_period)
{
fprintf(stderr, "ERROR: most options are not allowed with bsrt -dtest.\n");
Expand Down Expand Up @@ -945,6 +960,13 @@ static int parse_args(bgpview_io_bsrt_t *bsrt, int argc, char **argv)
free(peerasns[i]);
}

/* not peer asns */
for (int i = 0; i < not_peerasns_cnt; i++) {
bgpstream_add_filter(bsrt->stream, BGPSTREAM_FILTER_TYPE_ELEM_NOT_PEER_ASN,
not_peerasns[i]);
free(not_peerasns[i]);
}

/* prefixes */
for (int i = 0; i < prefixes_cnt; i++) {
bgpstream_add_filter(bsrt->stream, BGPSTREAM_FILTER_TYPE_ELEM_PREFIX,
Expand Down