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isotpdump: option to capture functional addressing traffic 

add option '-b' to capture functional broadcast data eg: -b 98DAFFF1 or -b 18DAFFF1
pull/555/head
chris 2024-08-06 13:02:44 +00:00 committed by Oliver Hartkopp
parent 8a156fee19
commit 367e0df4aa
1 changed files with 22 additions and 3 deletions
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23
isotpdump.c
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@ -72,6 +72,7 @@ void print_usage(char *prg)
fprintf(stderr, "Options:\n");
fprintf(stderr, " -s <can_id> (source can_id. Use 8 digits for extended IDs)\n");
fprintf(stderr, " -d <can_id> (destination can_id. Use 8 digits for extended IDs)\n");
fprintf(stderr, " -b <can_id> (broadcast can_id, Use 8 digits for extended IDs)\n");
fprintf(stderr, " -x <addr> (extended addressing mode. Use 'any' for all addresses)\n");
fprintf(stderr, " -X <addr> (extended addressing mode (rx addr). Use 'any' for all)\n");
fprintf(stderr, " -c (color mode)\n");
@ -197,11 +198,12 @@ int main(int argc, char **argv)
{
int s;
struct sockaddr_can addr;
struct can_filter rfilter[2];
struct can_filter rfilter[3];
struct canfd_frame frame;
int nbytes, i;
canid_t src = NO_CAN_ID;
canid_t dst = NO_CAN_ID;
canid_t bst = NO_CAN_ID;
int ext = 0;
int extaddr = 0;
int extany = 0;
@ -222,7 +224,7 @@ int main(int argc, char **argv)
last_tv.tv_sec = 0;
last_tv.tv_usec = 0;
while ((opt = getopt(argc, argv, "s:d:ax:X:ct:u?")) != -1) {
while ((opt = getopt(argc, argv, "s:d:b:ax:X:ct:u?")) != -1) {
switch (opt) {
case 's':
src = strtoul(optarg, NULL, 16);
@ -236,6 +238,12 @@ int main(int argc, char **argv)
dst |= CAN_EFF_FLAG;
break;
case 'b':
bst = strtoul(optarg, NULL, 16);
if (strlen(optarg) > 7)
bst |= CAN_EFF_FLAG;
break;
case 'c':
color = 1;
break;
@ -321,7 +329,18 @@ int main(int argc, char **argv)
rfilter[1].can_mask = (CAN_SFF_MASK|CAN_EFF_FLAG|CAN_RTR_FLAG);
}
if (bst & CAN_EFF_FLAG) {
rfilter[2].can_id = bst & (CAN_EFF_MASK | CAN_EFF_FLAG);
rfilter[2].can_mask = (CAN_EFF_MASK|CAN_EFF_FLAG|CAN_RTR_FLAG);
} else {
rfilter[2].can_id = bst & CAN_SFF_MASK;
rfilter[2].can_mask = (CAN_SFF_MASK|CAN_EFF_FLAG|CAN_RTR_FLAG);
}
if (bst != NO_CAN_ID)
setsockopt(s, SOL_CAN_RAW, CAN_RAW_FILTER, &rfilter, sizeof(rfilter));
else
setsockopt(s, SOL_CAN_RAW, CAN_RAW_FILTER, &rfilter, sizeof(rfilter) - sizeof(rfilter[0]));
addr.can_family = AF_CAN;
addr.can_ifindex = if_nametoindex(argv[optind]);