mirror of
https://gitlab.nic.cz/labs/bird.git
synced 2024-12-23 02:01:55 +00:00
2ce8589753
Changes: - Remove -R command line option (it's automatic, system dependent) - Fix mixing of broadcast and binding - Add -c command line option for count of packet - Fix receiving broadcast - Scan all interfaces via device protocol (unfortunately it is ugly)
68 lines
1.4 KiB
C
68 lines
1.4 KiB
C
#include "common.h"
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int
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rcv_hook(sock *sk, int size)
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{
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struct my_packet *raw;
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char ifa_name[IF_NAMESIZE];
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char buf[1024];
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if (cf_count && ++counter > cf_count)
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exit(0);
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if (sk->type == SK_IP)
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raw = (void *) sk_rx_buffer(sk, &size);
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else
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raw = (void *) sk->rbuf;
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if (size != sizeof(struct my_packet))
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{
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printf("Received a packet with unexpected length of %d bytes \n", size);
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return 1;
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}
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struct my_packet pkt = {
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.magic = ntohl(raw->magic),
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.value = ntohl(raw->value),
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.count = ntohl(raw->count),
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};
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if (!if_indextoname(sk->lifindex, ifa_name))
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{
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perror("if_indextoname");
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snprintf(ifa_name, sizeof(ifa_name), "???");
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}
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bsnprintf(buf, sizeof(buf), "%I:%u -> %I ifa(%u) %s: ", sk->faddr, sk->fport, sk->laddr, sk->lifindex, ifa_name);
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char *pos = buf + strlen(buf);
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if (pkt.magic == (u32)PKT_MAGIC)
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bsnprintf(pos, pos-buf, "pkt %d/%d, ttl %d", pkt.value, pkt.count, sk->rcv_ttl);
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else
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bsnprintf(pos, pos-buf, "magic value does not pass: recv %u, expected %u", pkt.magic, (u32)PKT_MAGIC);
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printf("%s\n", buf);
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/* Clear receive buffer */
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return 1;
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}
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int
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main(int argc, char *argv[])
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{
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bird_init();
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sock *s = skt_parse_args(argc, argv, 0);
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s->rx_hook = rcv_hook;
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s->rbsize = 1500;
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s->flags |= SKF_LADDR_RX | SKF_TTL_RX | SKF_PKTINFO;
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skt_open(s);
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while (1)
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{
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sk_read(s);
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usleep(20000);
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}
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}
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