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