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dns-debug: support record fail packet for debugging

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This commit is contained in:
Nick Peng
2022-07-31 15:49:10 +08:00
parent ab415f2ee9
commit ac042e8bee
10 changed files with 363 additions and 56 deletions
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42
src/dns.c
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@@ -1785,7 +1785,7 @@ static int _dns_decode_an(struct dns_context *context, dns_rr_type type)
}
if (context->ptr - opt_start != rr_len) {
tlog(TLOG_ERROR, "opt length mismatch, %s\n", domain);
tlog(TLOG_DEBUG, "opt length mismatch, %s\n", domain);
return -1;
}
@@ -2223,43 +2223,3 @@ int dns_packet_update(unsigned char *data, int size, struct dns_update_param *pa
return 0;
}
#if 0
void dns_debug(void)
{
unsigned char data[1024];
ssize_t len;
char buff[4096];
int fd = open("dns.bin", O_RDWR);
if (fd < 0) {
return;
}
len = read(fd, data, 1024);
close(fd);
if (len < 0) {
return;
}
struct dns_packet *packet = (struct dns_packet *)buff;
if (dns_decode(packet, 4096, data, len) != 0) {
tlog(TLOG_ERROR, "decode failed.\n");
}
memset(data, 0, sizeof(data));
len = dns_encode(data, 1024, packet);
if (len < 0) {
tlog(TLOG_ERROR, "encode failed.");
}
fd = open("dns-cmp.bin", O_CREAT | O_TRUNC | O_RDWR, 0660);
write(fd, data, len);
close(fd);
packet = (struct dns_packet *)buff;
if (dns_decode(packet, 4096, data, len) != 0) {
tlog(TLOG_ERROR, "decode failed.\n");
}
}
#endif