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upnpstun.c: Show more debug information

This commit is contained in:
Pali Rohár 2020-05-08 16:26:39 +02:00
parent 92a1ee9a7d
commit d7f60e3fdf
1 changed files with 12 additions and 1 deletions
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13
miniupnpd/upnpstun.c
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@ -251,6 +251,7 @@ static int wait_for_stun_responses(int fds[4], unsigned char *transaction_ids[4]
FD_SET(fds[i], &fdset);
}
syslog(LOG_DEBUG, "%s: waiting %ld secs and %ld usecs", "wait_for_stun_responses", timeout.tv_sec, timeout.tv_usec);
ret = select(max_fd+1, &fdset, NULL, NULL, &timeout);
if (ret < 0) {
if (errno == EINTR)
@ -258,13 +259,17 @@ static int wait_for_stun_responses(int fds[4], unsigned char *transaction_ids[4]
syslog(LOG_ERR, "%s: select(): %m", "wait_for_stun_responses");
return -1;
}
if (ret == 0)
if (ret == 0) {
syslog(LOG_DEBUG, "%s: select(): no more responses", "wait_for_stun_responses");
return 0;
}
for (i = 0; i < 4; ++i)
if (FD_ISSET(fds[i], &fdset))
lens[i] = receive_stun_response(fds[i], buffers[i], transaction_ids[i], buffers_lens[i], &peer_addrs[i]);
syslog(LOG_DEBUG, "%s: received responses: %u", "wait_for_stun_responses", (unsigned)(!!lens[0] + !!lens[1] + !!lens[2] + !!lens[3]));
if (lens[0] && lens[1] && lens[2] && lens[3])
return 0;
}
@ -332,6 +337,12 @@ static int parse_stun_response(unsigned char *buffer, size_t len, struct sockadd
ptr[7] ^= buffer[7];
}
syslog(LOG_DEBUG, "%s: %s %hhu.%hhu.%hhu.%hhu:%hu",
"parse_stun_response",
((attr_type & 0x7fff) == 0x0020) ? "XOR-MAPPED-ADDRESS" : "MAPPED-ADDRESS",
ptr[4], ptr[5], ptr[6], ptr[7],
(uint16_t)((ptr[2] << 8) + ptr[3]));
/* Prefer XOR Mapped Address, some NATs change IP addresses in UDP packets */
if (!have_xor_mapped_address) {
mapped_addr->sin_family = AF_INET;