dist/mDNSCore/dnsproxy.c

36 // for duplicates, before creating DNSProxyClient state and starting a question with the "core"
37 // (mDNS_StartQuery). When the callback for the question happens, it gathers all the necessary
243     // the question
252                 // If this is the first time, initialize the header and the question.
272                 LogInfo("AddResourceRecords: Answering question with %s", CRDisplayString(m, cr));
295             // If we are using CNAME to answer a question and CNAME is not the type we
306     // Along with the nsec records, we also cache the SOA record. For non-DNSSEC question, we need
307     // to send the SOA back. Normally we either cache the SOA record (non-DNSSEC question) pointed
308     // to by "cr->soa" or the NSEC/SOA records along with their RRSIGs (DNSSEC question) pointed to
311     // - if we issue a DNSSEC question followed by non-DNSSEC question for the same name,
315     // - if we issue a non-DNSSEC question followed by DNSSEC question for the same name,
316     //   the "core" flushes the cache entry and re-issue the question with EDNS0/DOK bit and
322         LogInfo("AddResourceRecords:NSEC Answering question with %s", CRDisplayString(m, nsec));
335         LogInfo("AddResourceRecords: SOA Answering question with %s", CRDisplayString(m, soa));
372 mDNSlocal void ProxyClientCallback(mDNS *const m, DNSQuestion *question, const ResourceRecord *const answer, QC_result AddRecord)
374     DNSProxyClient *pc = question->QuestionContext;
388     if (question->ValidationRequired)
395         if (((now - question->StopTime) < 0) && AddRecord != QC_dnssec)
397             LogInfo("ProxyClientCallback: No DNSSEC answer yet for Question %##s (%s), AddRecord %d, answer %s", question->qname.c,
398                 DNSTypeName(question->qtype), AddRecord, RRDisplayString(m, answer));
405         if (answer->rrtype != question->qtype)
451     if (question->ValidationRequired)
453         if (question->ValidationState == DNSSECValDone && question->ValidationStatus == DNSSEC_Secure)
455             LogInfo("ProxyClientCallback: Setting AD bit for Question %##s (%s)", question->qname.c, DNSTypeName(question->qtype));
466                     question->qname.c, DNSTypeName(question->qtype));
484     mDNS_StopQuery(m, question);
490         LogMsg("ProxyClientCallback: question %##s (%s) not found", question->qname.c, DNSTypeName(question->qtype));
504     // RFC 1035 requires that we copy the question back and RFC 2136 is okay with sending nothing
506     // in the question back to the responder. We return as much as we can fit in our standard
530     const DNSQuestion *const question)
539             pc->q.qtype == question->qtype  &&
540             pc->q.qclass  == question->qclass &&
541             SameDomainName(&pc->qname, &question->qname))