1 files changed, 125 insertions, 0 deletions
diff --git a/src/resolve/resolved-dns-query.h b/src/resolve/resolved-dns-query.h
new file mode 100644
index 0000000..5ee946b
--- /dev/null
+++ b/src/resolve/resolved-dns-query.h
@@ -0,0 +1,125 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
+#pragma once
+
+#include "sd-bus.h"
+
+#include "set.h"
+
+typedef struct DnsQueryCandidate DnsQueryCandidate;
+typedef struct DnsQuery DnsQuery;
+
+#include "resolved-dns-answer.h"
+#include "resolved-dns-question.h"
+#include "resolved-dns-stream.h"
+#include "resolved-dns-search-domain.h"
+
+struct DnsQueryCandidate {
+        DnsQuery *query;
+        DnsScope *scope;
+
+        DnsSearchDomain *search_domain;
+
+        int error_code;
+        Set *transactions;
+
+        LIST_FIELDS(DnsQueryCandidate, candidates_by_query);
+        LIST_FIELDS(DnsQueryCandidate, candidates_by_scope);
+};
+
+struct DnsQuery {
+        Manager *manager;
+
+        /* When resolving a service, we first create a TXT+SRV query,
+         * and then for the hostnames we discover auxiliary A+AAAA
+         * queries. This pointer always points from the auxiliary
+         * queries back to the TXT+SRV query. */
+        DnsQuery *auxiliary_for;
+        LIST_HEAD(DnsQuery, auxiliary_queries);
+        unsigned n_auxiliary_queries;
+        int auxiliary_result;
+
+        /* The question, formatted in IDNA for use on classic DNS, and as UTF8 for use in LLMNR or mDNS. Note that even
+         * on classic DNS some labels might use UTF8 encoding. Specifically, DNS-SD service names (in contrast to their
+         * domain suffixes) use UTF-8 encoding even on DNS. Thus, the difference between these two fields is mostly
+         * relevant only for explicit *hostname* lookups as well as the domain suffixes of service lookups. */
+        DnsQuestion *question_idna;
+        DnsQuestion *question_utf8;
+
+        uint64_t flags;
+        int ifindex;
+
+        /* If true, A or AAAA RR lookups will be suppressed on links with no routable address of the matching address
+         * family */
+        bool suppress_unroutable_family;
+
+        /* If true, the RR TTLs of the answer will be clamped by their current left validity in the cache */
+        bool clamp_ttl;
+
+        DnsTransactionState state;
+        unsigned n_cname_redirects;
+
+        LIST_HEAD(DnsQueryCandidate, candidates);
+        sd_event_source *timeout_event_source;
+
+        /* Discovered data */
+        DnsAnswer *answer;
+        int answer_rcode;
+        DnssecResult answer_dnssec_result;
+        bool answer_authenticated;
+        DnsProtocol answer_protocol;
+        int answer_family;
+        DnsSearchDomain *answer_search_domain;
+        int answer_errno; /* if state is DNS_TRANSACTION_ERRNO */
+        bool previous_redirect_unauthenticated;
+
+        /* Bus client information */
+        sd_bus_message *request;
+        int request_family;
+        bool request_address_valid;
+        union in_addr_union request_address;
+        unsigned block_all_complete;
+        char *request_address_string;
+
+        /* DNS stub information */
+        DnsPacket *request_dns_packet;
+        DnsStream *request_dns_stream;
+        DnsPacket *reply_dns_packet;
+
+        /* Completion callback */
+        void (*complete)(DnsQuery* q);
+        unsigned block_ready;
+
+        sd_bus_track *bus_track;
+
+        LIST_FIELDS(DnsQuery, queries);
+        LIST_FIELDS(DnsQuery, auxiliary_queries);
+};
+
+enum {
+        DNS_QUERY_MATCH,
+        DNS_QUERY_NOMATCH,
+        DNS_QUERY_RESTARTED,
+};
+
+DnsQueryCandidate* dns_query_candidate_free(DnsQueryCandidate *c);
+void dns_query_candidate_notify(DnsQueryCandidate *c);
+
+int dns_query_new(Manager *m, DnsQuery **q, DnsQuestion *question_utf8, DnsQuestion *question_idna, int family, uint64_t flags);
+DnsQuery *dns_query_free(DnsQuery *q);
+
+int dns_query_make_auxiliary(DnsQuery *q, DnsQuery *auxiliary_for);
+
+int dns_query_go(DnsQuery *q);
+void dns_query_ready(DnsQuery *q);
+
+int dns_query_process_cname(DnsQuery *q);
+
+int dns_query_bus_track(DnsQuery *q, sd_bus_message *m);
+
+DnsQuestion* dns_query_question_for_protocol(DnsQuery *q, DnsProtocol protocol);
+
+const char *dns_query_string(DnsQuery *q);
+
+DEFINE_TRIVIAL_CLEANUP_FUNC(DnsQuery*, dns_query_free);
+
+bool dns_query_fully_authenticated(DnsQuery *q);