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dnsd: add more -v messages

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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2010-02-07 01:11:18 +01:00
parent b55d652400
commit e66a09ba9c
1 changed files with 19 additions and 7 deletions
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26
networking/dnsd.c
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@ -388,24 +388,32 @@ static int process_packet(struct dns_entry *conf_data,
move_from_unaligned16(type, &unaligned_type_class->type); move_from_unaligned16(type, &unaligned_type_class->type);
if (type != htons(REQ_A) && type != htons(REQ_PTR)) { if (type != htons(REQ_A) && type != htons(REQ_PTR)) {
/* we can't handle the query type */ /* we can't handle this query type */
//TODO: handle REQ_AAAA (0x1c) requests
bb_error_msg("type %u is !REQ_A and !REQ_PTR%s",
(int)ntohs(type),
", returning Not Implemented reply");
goto empty_packet; goto empty_packet;
} }
move_from_unaligned16(class, &unaligned_type_class->class); move_from_unaligned16(class, &unaligned_type_class->class);
if (class != htons(1)) { /* not class INET? */ if (class != htons(1)) { /* not class INET? */
bb_error_msg("class != 1%s",
", returning Not Implemented reply");
goto empty_packet; goto empty_packet;
} }
/* OPCODE != 0 "standard query" ? */ /* OPCODE != 0 "standard query" ? */
if ((head->flags & htons(0x7800)) != 0) { if ((head->flags & htons(0x7800)) != 0) {
bb_error_msg("opcode != 0%s",
", returning Not Implemented reply");
goto empty_packet; goto empty_packet;
} }
/* look up the name */ /* look up the name */
#if DEBUG
/* need to convert lengths to dots before we can use it in non-debug */
bb_info_msg("%s", query_string);
#endif
answstr = table_lookup(conf_data, type, query_string); answstr = table_lookup(conf_data, type, query_string);
#if DEBUG
/* Shows lengths instead of dots, unusable for !DEBUG */
bb_error_msg("'%s'->'%s'", query_string, answstr);
#endif
outr_rlen = 4; outr_rlen = 4;
if (answstr && type == htons(REQ_PTR)) { if (answstr && type == htons(REQ_PTR)) {
/* returning a host name */ /* returning a host name */
@ -417,6 +425,8 @@ static int process_packet(struct dns_entry *conf_data,
/* QR = 1 "response" /* QR = 1 "response"
* AA = 1 "Authoritative Answer" * AA = 1 "Authoritative Answer"
* RCODE = 3 "Name Error" */ * RCODE = 3 "Name Error" */
if (OPT_verbose)
bb_error_msg("returning Name Error reply");
outr_flags = htons(0x8000 | 0x0400 | 3); outr_flags = htons(0x8000 | 0x0400 | 3);
goto empty_packet; goto empty_packet;
} }
@ -438,6 +448,8 @@ static int process_packet(struct dns_entry *conf_data,
* "** server can't find HOSTNAME" * "** server can't find HOSTNAME"
* RCODE = 0 "success" * RCODE = 0 "success"
*/ */
if (OPT_verbose)
bb_error_msg("returning positive reply");
outr_flags = htons(0x8000 | 0x0400 | 0); outr_flags = htons(0x8000 | 0x0400 | 0);
/* we have one answer */ /* we have one answer */
head->nansw = htons(1); head->nansw = htons(1);
@ -492,7 +504,7 @@ int dnsd_main(int argc UNUSED_PARAM, char **argv)
{ {
char *p = xmalloc_sockaddr2dotted(&lsa->u.sa); char *p = xmalloc_sockaddr2dotted(&lsa->u.sa);
bb_info_msg("Accepting UDP packets on %s", p); bb_error_msg("accepting UDP packets on %s", p);
free(p); free(p);
} }
@ -510,7 +522,7 @@ int dnsd_main(int argc UNUSED_PARAM, char **argv)
continue; continue;
} }
if (OPT_verbose) if (OPT_verbose)
bb_info_msg("Got UDP packet"); bb_error_msg("got UDP packet");
buf[r] = '\0'; /* paranoia */ buf[r] = '\0'; /* paranoia */
r = process_packet(conf_data, conf_ttl, buf); r = process_packet(conf_data, conf_ttl, buf);
if (r <= 0) if (r <= 0)