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-rw-r--r--src/resolve/resolved-bus.c2309
1 files changed, 2309 insertions, 0 deletions
diff --git a/src/resolve/resolved-bus.c b/src/resolve/resolved-bus.c
new file mode 100644
index 0000000..919573c
--- /dev/null
+++ b/src/resolve/resolved-bus.c
@@ -0,0 +1,2309 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include "alloc-util.h"
+#include "bus-common-errors.h"
+#include "bus-get-properties.h"
+#include "bus-log-control-api.h"
+#include "bus-message-util.h"
+#include "bus-polkit.h"
+#include "dns-domain.h"
+#include "format-util.h"
+#include "memory-util.h"
+#include "missing_capability.h"
+#include "resolved-bus.h"
+#include "resolved-def.h"
+#include "resolved-dns-synthesize.h"
+#include "resolved-dnssd-bus.h"
+#include "resolved-dnssd.h"
+#include "resolved-link-bus.h"
+#include "resolved-resolv-conf.h"
+#include "socket-netlink.h"
+#include "stdio-util.h"
+#include "strv.h"
+#include "syslog-util.h"
+#include "user-util.h"
+#include "utf8.h"
+
+BUS_DEFINE_PROPERTY_GET_ENUM(bus_property_get_resolve_support, resolve_support, ResolveSupport);
+
+static int query_on_bus_track(sd_bus_track *t, void *userdata) {
+ DnsQuery *q = ASSERT_PTR(userdata);
+
+ assert(t);
+
+ if (!DNS_TRANSACTION_IS_LIVE(q->state))
+ return 0;
+
+ log_debug("Client of active query vanished, aborting query.");
+ dns_query_complete(q, DNS_TRANSACTION_ABORTED);
+ return 0;
+}
+
+static int dns_query_bus_track(DnsQuery *q, sd_bus_message *m) {
+ int r;
+
+ assert(q);
+ assert(m);
+
+ if (!q->bus_track) {
+ r = sd_bus_track_new(sd_bus_message_get_bus(m), &q->bus_track, query_on_bus_track, q);
+ if (r < 0)
+ return r;
+ }
+
+ r = sd_bus_track_add_sender(q->bus_track, m);
+ if (r < 0)
+ return r;
+
+ return 0;
+}
+
+static sd_bus_message *dns_query_steal_request(DnsQuery *q) {
+ assert(q);
+
+ /* Find the main query, it's the one that owns the message */
+ while (q->auxiliary_for)
+ q = q->auxiliary_for;
+
+ /* Let's take the request message out of the DnsQuery object, so that we never send requests twice */
+ return TAKE_PTR(q->bus_request);
+}
+
+_sd_printf_(3, 4) static int reply_method_errorf(
+ DnsQuery *query,
+ const char *error_name,
+ const char *format,
+ ...) {
+
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *req = NULL;
+ va_list ap;
+ int r;
+
+ assert(query);
+ assert(format);
+
+ req = dns_query_steal_request(query);
+ if (!req) /* No bus message set anymore? then we already replied already, let's not answer a second time */
+ return 0;
+
+ va_start(ap, format);
+ r = sd_bus_reply_method_errorfv(req, error_name, format, ap);
+ va_end(ap);
+
+ return r;
+}
+
+_sd_printf_(3, 4) static int reply_method_errnof(
+ DnsQuery *query,
+ int err,
+ const char *format,
+ ...) {
+
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *req = NULL;
+ int r;
+
+ assert(query);
+
+ req = dns_query_steal_request(query);
+ if (!req) /* No bus message set anymore? then we already replied already, let's not answer a second time */
+ return 0;
+
+ if (format) {
+ va_list ap;
+
+ va_start(ap, format);
+ r = sd_bus_reply_method_errnofv(req, err, format, ap);
+ va_end(ap);
+ } else
+ r = sd_bus_reply_method_errno(req, err, NULL);
+
+ return r;
+}
+
+static int reply_query_state(DnsQuery *q) {
+ assert(q);
+
+ switch (q->state) {
+
+ case DNS_TRANSACTION_NO_SERVERS:
+ return reply_method_errorf(q, BUS_ERROR_NO_NAME_SERVERS, "No appropriate name servers or networks for name found");
+
+ case DNS_TRANSACTION_TIMEOUT:
+ return reply_method_errorf(q, SD_BUS_ERROR_TIMEOUT, "Query timed out");
+
+ case DNS_TRANSACTION_ATTEMPTS_MAX_REACHED:
+ return reply_method_errorf(q, SD_BUS_ERROR_TIMEOUT, "All attempts to contact name servers or networks failed");
+
+ case DNS_TRANSACTION_INVALID_REPLY:
+ return reply_method_errorf(q, BUS_ERROR_INVALID_REPLY, "Received invalid reply");
+
+ case DNS_TRANSACTION_ERRNO:
+ return reply_method_errnof(q, q->answer_errno, "Lookup failed due to system error: %m");
+
+ case DNS_TRANSACTION_ABORTED:
+ return reply_method_errorf(q, BUS_ERROR_ABORTED, "Query aborted");
+
+ case DNS_TRANSACTION_DNSSEC_FAILED:
+ return reply_method_errorf(q, BUS_ERROR_DNSSEC_FAILED, "DNSSEC validation failed: %s",
+ dnssec_result_to_string(q->answer_dnssec_result));
+
+ case DNS_TRANSACTION_NO_TRUST_ANCHOR:
+ return reply_method_errorf(q, BUS_ERROR_NO_TRUST_ANCHOR, "No suitable trust anchor known");
+
+ case DNS_TRANSACTION_RR_TYPE_UNSUPPORTED:
+ return reply_method_errorf(q, BUS_ERROR_RR_TYPE_UNSUPPORTED, "Server does not support requested resource record type");
+
+ case DNS_TRANSACTION_NETWORK_DOWN:
+ return reply_method_errorf(q, BUS_ERROR_NETWORK_DOWN, "Network is down");
+
+ case DNS_TRANSACTION_NOT_FOUND:
+ /* We return this as NXDOMAIN. This is only generated when a host doesn't implement LLMNR/TCP, and we
+ * thus quickly know that we cannot resolve an in-addr.arpa or ip6.arpa address. */
+ return reply_method_errorf(q, BUS_ERROR_DNS_NXDOMAIN, "'%s' not found", dns_query_string(q));
+
+ case DNS_TRANSACTION_NO_SOURCE:
+ return reply_method_errorf(q, BUS_ERROR_NO_SOURCE, "All suitable resolution sources turned off");
+
+ case DNS_TRANSACTION_STUB_LOOP:
+ return reply_method_errorf(q, BUS_ERROR_STUB_LOOP, "Configured DNS server loops back to us");
+
+ case DNS_TRANSACTION_RCODE_FAILURE: {
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *req = NULL;
+
+ req = dns_query_steal_request(q);
+ if (!req) /* No bus message set anymore? then we already replied already, let's not answer a second time */
+ return 0;
+
+ if (q->answer_rcode == DNS_RCODE_NXDOMAIN)
+ sd_bus_error_setf(&error, BUS_ERROR_DNS_NXDOMAIN, "Name '%s' not found", dns_query_string(q));
+ else {
+ const char *rc, *n;
+
+ rc = FORMAT_DNS_RCODE(q->answer_rcode);
+ n = strjoina(_BUS_ERROR_DNS, rc);
+ sd_bus_error_setf(&error, n, "Could not resolve '%s', server or network returned error %s", dns_query_string(q), rc);
+ }
+
+ return sd_bus_reply_method_error(req, &error);
+ }
+
+ case DNS_TRANSACTION_NULL:
+ case DNS_TRANSACTION_PENDING:
+ case DNS_TRANSACTION_VALIDATING:
+ case DNS_TRANSACTION_SUCCESS:
+ default:
+ assert_not_reached();
+ }
+}
+
+static int append_address(sd_bus_message *reply, DnsResourceRecord *rr, int ifindex) {
+ int r;
+
+ assert(reply);
+ assert(rr);
+
+ r = sd_bus_message_open_container(reply, 'r', "iiay");
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_append(reply, "i", ifindex);
+ if (r < 0)
+ return r;
+
+ if (rr->key->type == DNS_TYPE_A) {
+ r = sd_bus_message_append(reply, "i", AF_INET);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_append_array(reply, 'y', &rr->a.in_addr, sizeof(struct in_addr));
+
+ } else if (rr->key->type == DNS_TYPE_AAAA) {
+ r = sd_bus_message_append(reply, "i", AF_INET6);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_append_array(reply, 'y', &rr->aaaa.in6_addr, sizeof(struct in6_addr));
+ } else
+ return -EAFNOSUPPORT;
+
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_close_container(reply);
+ if (r < 0)
+ return r;
+
+ return 0;
+}
+
+static void bus_method_resolve_hostname_complete(DnsQuery *query) {
+ _cleanup_(dns_resource_record_unrefp) DnsResourceRecord *canonical = NULL;
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
+ _cleanup_(dns_query_freep) DnsQuery *q = query;
+ _cleanup_free_ char *normalized = NULL;
+ DnsQuestion *question;
+ DnsResourceRecord *rr;
+ unsigned added = 0;
+ int ifindex, r;
+
+ assert(q);
+
+ if (q->state != DNS_TRANSACTION_SUCCESS) {
+ r = reply_query_state(q);
+ goto finish;
+ }
+
+ r = dns_query_process_cname_many(q);
+ if (r == -ELOOP) {
+ r = reply_method_errorf(q, BUS_ERROR_CNAME_LOOP, "CNAME loop detected, or CNAME resolving disabled on '%s'", dns_query_string(q));
+ goto finish;
+ }
+ if (r < 0)
+ goto finish;
+ if (r == DNS_QUERY_CNAME) {
+ /* This was a cname, and the query was restarted. */
+ TAKE_PTR(q);
+ return;
+ }
+
+ r = sd_bus_message_new_method_return(q->bus_request, &reply);
+ if (r < 0)
+ goto finish;
+
+ r = sd_bus_message_open_container(reply, 'a', "(iiay)");
+ if (r < 0)
+ goto finish;
+
+ question = dns_query_question_for_protocol(q, q->answer_protocol);
+
+ DNS_ANSWER_FOREACH_IFINDEX(rr, ifindex, q->answer) {
+
+ r = dns_question_matches_rr(question, rr, DNS_SEARCH_DOMAIN_NAME(q->answer_search_domain));
+ if (r < 0)
+ goto finish;
+ if (r == 0)
+ continue;
+
+ r = append_address(reply, rr, ifindex);
+ if (r < 0)
+ goto finish;
+
+ if (!canonical)
+ canonical = dns_resource_record_ref(rr);
+
+ added++;
+ }
+
+ if (added <= 0) {
+ r = reply_method_errorf(q, BUS_ERROR_NO_SUCH_RR, "'%s' does not have any RR of the requested type", dns_query_string(q));
+ goto finish;
+ }
+
+ r = sd_bus_message_close_container(reply);
+ if (r < 0)
+ goto finish;
+
+ /* The key names are not necessarily normalized, make sure that they are when we return them to our
+ * bus clients. */
+ assert(canonical);
+ r = dns_name_normalize(dns_resource_key_name(canonical->key), 0, &normalized);
+ if (r < 0)
+ goto finish;
+
+ /* Return the precise spelling and uppercasing and CNAME target reported by the server */
+ r = sd_bus_message_append(
+ reply, "st",
+ normalized,
+ dns_query_reply_flags_make(q));
+ if (r < 0)
+ goto finish;
+
+ q->bus_request = sd_bus_message_unref(q->bus_request);
+ r = sd_bus_send(q->manager->bus, reply, NULL);
+
+finish:
+ if (r < 0) {
+ log_error_errno(r, "Failed to send hostname reply: %m");
+ (void) reply_method_errnof(q, r, NULL);
+ }
+}
+
+static int validate_and_mangle_flags(
+ const char *name,
+ uint64_t *flags,
+ uint64_t ok,
+ sd_bus_error *error) {
+
+ assert(flags);
+
+ /* Checks that the client supplied interface index and flags parameter actually are valid and make
+ * sense in our method call context. Specifically:
+ *
+ * 1. Checks that the interface index is either 0 (meaning *all* interfaces) or positive
+ *
+ * 2. Only the protocols flags and a bunch of NO_XYZ flags are set, at most. Plus additional flags
+ * specific to our method, passed in the "ok" parameter.
+ *
+ * 3. If zero protocol flags are specified it is automatically turned into *all* protocols. This way
+ * clients can simply pass 0 as flags and all will work as it should. They can also use this so
+ * that clients don't have to know all the protocols resolved implements, but can just specify 0
+ * to mean "all supported protocols".
+ */
+
+ if (*flags & ~(SD_RESOLVED_PROTOCOLS_ALL|
+ SD_RESOLVED_NO_CNAME|
+ SD_RESOLVED_NO_VALIDATE|
+ SD_RESOLVED_NO_SYNTHESIZE|
+ SD_RESOLVED_NO_CACHE|
+ SD_RESOLVED_NO_ZONE|
+ SD_RESOLVED_NO_TRUST_ANCHOR|
+ SD_RESOLVED_NO_NETWORK|
+ ok))
+ return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid flags parameter");
+
+ if ((*flags & SD_RESOLVED_PROTOCOLS_ALL) == 0) /* If no protocol is enabled, enable all */
+ *flags |= SD_RESOLVED_PROTOCOLS_ALL;
+
+ /* Imply SD_RESOLVED_NO_SEARCH if permitted and name is dot suffixed. */
+ if (name && FLAGS_SET(ok, SD_RESOLVED_NO_SEARCH) && dns_name_dot_suffixed(name) > 0)
+ *flags |= SD_RESOLVED_NO_SEARCH;
+
+ return 0;
+}
+
+static int parse_as_address(sd_bus_message *m, int ifindex, const char *hostname, int family, uint64_t flags) {
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
+ _cleanup_free_ char *canonical = NULL;
+ union in_addr_union parsed;
+ int r, ff, parsed_ifindex = 0;
+
+ /* Check if the hostname is actually already an IP address formatted as string. In that case just parse it,
+ * let's not attempt to look it up. */
+
+ r = in_addr_ifindex_from_string_auto(hostname, &ff, &parsed, &parsed_ifindex);
+ if (r < 0) /* not an address */
+ return 0;
+
+ if (family != AF_UNSPEC && ff != family)
+ return sd_bus_reply_method_errorf(m, BUS_ERROR_NO_SUCH_RR, "The specified address is not of the requested family.");
+ if (ifindex > 0 && parsed_ifindex > 0 && parsed_ifindex != ifindex)
+ return sd_bus_reply_method_errorf(m, BUS_ERROR_NO_SUCH_RR, "The specified address interface index does not match requested interface.");
+
+ if (parsed_ifindex > 0)
+ ifindex = parsed_ifindex;
+
+ r = sd_bus_message_new_method_return(m, &reply);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_open_container(reply, 'a', "(iiay)");
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_open_container(reply, 'r', "iiay");
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_append(reply, "ii", ifindex, ff);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_append_array(reply, 'y', &parsed, FAMILY_ADDRESS_SIZE(ff));
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_close_container(reply);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_close_container(reply);
+ if (r < 0)
+ return r;
+
+ /* When an IP address is specified we just return it as canonical name, in order to avoid a DNS
+ * look-up. However, we reformat it to make sure it's in a truly canonical form (i.e. on IPv6 the inner
+ * omissions are always done the same way). */
+ r = in_addr_ifindex_to_string(ff, &parsed, ifindex, &canonical);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_append(reply, "st", canonical,
+ SD_RESOLVED_FLAGS_MAKE(dns_synthesize_protocol(flags), ff, true, true) |
+ SD_RESOLVED_SYNTHETIC);
+ if (r < 0)
+ return r;
+
+ return sd_bus_send(sd_bus_message_get_bus(m), reply, NULL);
+}
+
+void bus_client_log(sd_bus_message *m, const char *what) {
+ _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
+ const char *comm = NULL;
+ uid_t uid = UID_INVALID;
+ pid_t pid = 0;
+ int r;
+
+ assert(m);
+ assert(what);
+
+ if (!DEBUG_LOGGING)
+ return;
+
+ r = sd_bus_query_sender_creds(m, SD_BUS_CREDS_PID|SD_BUS_CREDS_UID|SD_BUS_CREDS_COMM|SD_BUS_CREDS_AUGMENT, &creds);
+ if (r < 0)
+ return (void) log_debug_errno(r, "Failed to query client credentials, ignoring: %m");
+
+ (void) sd_bus_creds_get_uid(creds, &uid);
+ (void) sd_bus_creds_get_pid(creds, &pid);
+ (void) sd_bus_creds_get_comm(creds, &comm);
+
+ log_debug("D-Bus %s request from client PID " PID_FMT " (%s) with UID " UID_FMT,
+ what, pid, strna(comm), uid);
+}
+
+static int bus_method_resolve_hostname(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ _cleanup_(dns_question_unrefp) DnsQuestion *question_idna = NULL, *question_utf8 = NULL;
+ _cleanup_(dns_query_freep) DnsQuery *q = NULL;
+ Manager *m = ASSERT_PTR(userdata);
+ const char *hostname;
+ int family, ifindex;
+ uint64_t flags;
+ int r;
+
+ assert(message);
+
+ assert_cc(sizeof(int) == sizeof(int32_t));
+
+ r = sd_bus_message_read(message, "isit", &ifindex, &hostname, &family, &flags);
+ if (r < 0)
+ return r;
+
+ if (ifindex < 0)
+ return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid interface index");
+
+ if (!IN_SET(family, AF_INET, AF_INET6, AF_UNSPEC))
+ return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unknown address family %i", family);
+
+ r = validate_and_mangle_flags(hostname, &flags, SD_RESOLVED_NO_SEARCH, error);
+ if (r < 0)
+ return r;
+
+ r = parse_as_address(message, ifindex, hostname, family, flags);
+ if (r != 0)
+ return r;
+
+ r = dns_name_is_valid(hostname);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid hostname '%s'", hostname);
+
+ r = dns_question_new_address(&question_utf8, family, hostname, false);
+ if (r < 0)
+ return r;
+
+ r = dns_question_new_address(&question_idna, family, hostname, true);
+ if (r < 0 && r != -EALREADY)
+ return r;
+
+ bus_client_log(message, "hostname resolution");
+
+ r = dns_query_new(m, &q, question_utf8, question_idna ?: question_utf8, NULL, ifindex, flags);
+ if (r < 0)
+ return r;
+
+ q->bus_request = sd_bus_message_ref(message);
+ q->request_family = family;
+ q->complete = bus_method_resolve_hostname_complete;
+
+ r = dns_query_bus_track(q, message);
+ if (r < 0)
+ return r;
+
+ r = dns_query_go(q);
+ if (r < 0)
+ return r;
+
+ TAKE_PTR(q);
+ return 1;
+}
+
+static void bus_method_resolve_address_complete(DnsQuery *query) {
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
+ _cleanup_(dns_query_freep) DnsQuery *q = query;
+ DnsQuestion *question;
+ DnsResourceRecord *rr;
+ unsigned added = 0;
+ int ifindex, r;
+
+ assert(q);
+
+ if (q->state != DNS_TRANSACTION_SUCCESS) {
+ r = reply_query_state(q);
+ goto finish;
+ }
+
+ r = dns_query_process_cname_many(q);
+ if (r == -ELOOP) {
+ r = reply_method_errorf(q, BUS_ERROR_CNAME_LOOP, "CNAME loop detected, or CNAME resolving disabled on '%s'", dns_query_string(q));
+ goto finish;
+ }
+ if (r < 0)
+ goto finish;
+ if (r == DNS_QUERY_CNAME) {
+ /* This was a cname, and the query was restarted. */
+ TAKE_PTR(q);
+ return;
+ }
+
+ r = sd_bus_message_new_method_return(q->bus_request, &reply);
+ if (r < 0)
+ goto finish;
+
+ r = sd_bus_message_open_container(reply, 'a', "(is)");
+ if (r < 0)
+ goto finish;
+
+ question = dns_query_question_for_protocol(q, q->answer_protocol);
+
+ DNS_ANSWER_FOREACH_IFINDEX(rr, ifindex, q->answer) {
+ _cleanup_free_ char *normalized = NULL;
+
+ r = dns_question_matches_rr(question, rr, NULL);
+ if (r < 0)
+ goto finish;
+ if (r == 0)
+ continue;
+
+ r = dns_name_normalize(rr->ptr.name, 0, &normalized);
+ if (r < 0)
+ goto finish;
+
+ r = sd_bus_message_append(reply, "(is)", ifindex, normalized);
+ if (r < 0)
+ goto finish;
+
+ added++;
+ }
+
+ if (added <= 0) {
+ r = reply_method_errorf(q, BUS_ERROR_NO_SUCH_RR,
+ "Address %s does not have any RR of requested type",
+ IN_ADDR_TO_STRING(q->request_family, &q->request_address));
+ goto finish;
+ }
+
+ r = sd_bus_message_close_container(reply);
+ if (r < 0)
+ goto finish;
+
+ r = sd_bus_message_append(reply, "t", dns_query_reply_flags_make(q));
+ if (r < 0)
+ goto finish;
+
+ q->bus_request = sd_bus_message_unref(q->bus_request);
+ r = sd_bus_send(q->manager->bus, reply, NULL);
+
+finish:
+ if (r < 0) {
+ log_error_errno(r, "Failed to send address reply: %m");
+ (void) reply_method_errnof(q, r, NULL);
+ }
+}
+
+static int bus_method_resolve_address(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ _cleanup_(dns_question_unrefp) DnsQuestion *question = NULL;
+ _cleanup_(dns_query_freep) DnsQuery *q = NULL;
+ Manager *m = ASSERT_PTR(userdata);
+ union in_addr_union a;
+ int family, ifindex;
+ uint64_t flags;
+ int r;
+
+ assert(message);
+
+ assert_cc(sizeof(int) == sizeof(int32_t));
+
+ r = sd_bus_message_read(message, "i", &ifindex);
+ if (r < 0)
+ return r;
+
+ r = bus_message_read_in_addr_auto(message, error, &family, &a);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_read(message, "t", &flags);
+ if (r < 0)
+ return r;
+
+ if (ifindex < 0)
+ return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid interface index");
+
+ r = validate_and_mangle_flags(NULL, &flags, 0, error);
+ if (r < 0)
+ return r;
+
+ r = dns_question_new_reverse(&question, family, &a);
+ if (r < 0)
+ return r;
+
+ bus_client_log(message, "address resolution");
+
+ r = dns_query_new(m, &q, question, question, NULL, ifindex, flags|SD_RESOLVED_NO_SEARCH);
+ if (r < 0)
+ return r;
+
+ q->bus_request = sd_bus_message_ref(message);
+ q->request_family = family;
+ q->request_address = a;
+ q->complete = bus_method_resolve_address_complete;
+
+ r = dns_query_bus_track(q, message);
+ if (r < 0)
+ return r;
+
+ r = dns_query_go(q);
+ if (r < 0)
+ return r;
+
+ TAKE_PTR(q);
+ return 1;
+}
+
+static int bus_message_append_rr(sd_bus_message *m, DnsResourceRecord *rr, int ifindex) {
+ int r;
+
+ assert(m);
+ assert(rr);
+
+ r = sd_bus_message_open_container(m, 'r', "iqqay");
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_append(m, "iqq",
+ ifindex,
+ rr->key->class,
+ rr->key->type);
+ if (r < 0)
+ return r;
+
+ r = dns_resource_record_to_wire_format(rr, false);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_append_array(m, 'y', rr->wire_format, rr->wire_format_size);
+ if (r < 0)
+ return r;
+
+ return sd_bus_message_close_container(m);
+}
+
+static void bus_method_resolve_record_complete(DnsQuery *query) {
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
+ _cleanup_(dns_query_freep) DnsQuery *q = query;
+ DnsResourceRecord *rr;
+ DnsQuestion *question;
+ unsigned added = 0;
+ int ifindex;
+ int r;
+
+ assert(q);
+
+ if (q->state != DNS_TRANSACTION_SUCCESS) {
+ r = reply_query_state(q);
+ goto finish;
+ }
+
+ r = dns_query_process_cname_many(q);
+ if (r == -ELOOP) {
+ r = reply_method_errorf(q, BUS_ERROR_CNAME_LOOP, "CNAME loop detected, or CNAME resolving disabled on '%s'", dns_query_string(q));
+ goto finish;
+ }
+ if (r < 0)
+ goto finish;
+ if (r == DNS_QUERY_CNAME) {
+ /* This was a cname, and the query was restarted. */
+ TAKE_PTR(q);
+ return;
+ }
+
+ r = sd_bus_message_new_method_return(q->bus_request, &reply);
+ if (r < 0)
+ goto finish;
+
+ r = sd_bus_message_open_container(reply, 'a', "(iqqay)");
+ if (r < 0)
+ goto finish;
+
+ question = dns_query_question_for_protocol(q, q->answer_protocol);
+
+ DNS_ANSWER_FOREACH_IFINDEX(rr, ifindex, q->answer) {
+ r = dns_question_matches_rr(question, rr, NULL);
+ if (r < 0)
+ goto finish;
+ if (r == 0)
+ continue;
+
+ r = bus_message_append_rr(reply, rr, ifindex);
+ if (r < 0)
+ goto finish;
+
+ added++;
+ }
+
+ if (added <= 0) {
+ r = reply_method_errorf(q, BUS_ERROR_NO_SUCH_RR, "Name '%s' does not have any RR of the requested type", dns_query_string(q));
+ goto finish;
+ }
+
+ r = sd_bus_message_close_container(reply);
+ if (r < 0)
+ goto finish;
+
+ r = sd_bus_message_append(reply, "t", dns_query_reply_flags_make(q));
+ if (r < 0)
+ goto finish;
+
+ q->bus_request = sd_bus_message_unref(q->bus_request);
+ r = sd_bus_send(q->manager->bus, reply, NULL);
+
+finish:
+ if (r < 0) {
+ log_error_errno(r, "Failed to send record reply: %m");
+ (void) reply_method_errnof(q, r, NULL);
+ }
+}
+
+static int bus_method_resolve_record(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ _cleanup_(dns_resource_key_unrefp) DnsResourceKey *key = NULL;
+ _cleanup_(dns_question_unrefp) DnsQuestion *question = NULL;
+ _cleanup_(dns_query_freep) DnsQuery *q = NULL;
+ Manager *m = ASSERT_PTR(userdata);
+ uint16_t class, type;
+ const char *name;
+ int r, ifindex;
+ uint64_t flags;
+
+ assert(message);
+
+ assert_cc(sizeof(int) == sizeof(int32_t));
+
+ r = sd_bus_message_read(message, "isqqt", &ifindex, &name, &class, &type, &flags);
+ if (r < 0)
+ return r;
+
+ if (ifindex < 0)
+ return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid interface index");
+
+ r = dns_name_is_valid(name);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid name '%s'", name);
+
+ if (!dns_type_is_valid_query(type))
+ return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Specified resource record type %" PRIu16 " may not be used in a query.", type);
+ if (dns_type_is_zone_transer(type))
+ return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Zone transfers not permitted via this programming interface.");
+ if (dns_type_is_obsolete(type))
+ return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Specified DNS resource record type %" PRIu16 " is obsolete.", type);
+
+ r = validate_and_mangle_flags(name, &flags, 0, error);
+ if (r < 0)
+ return r;
+
+ question = dns_question_new(1);
+ if (!question)
+ return -ENOMEM;
+
+ key = dns_resource_key_new(class, type, name);
+ if (!key)
+ return -ENOMEM;
+
+ r = dns_question_add(question, key, 0);
+ if (r < 0)
+ return r;
+
+ bus_client_log(message, "resource record resolution");
+
+ /* Setting SD_RESOLVED_CLAMP_TTL: let's request that the TTL is fixed up for locally cached entries,
+ * after all we return it in the wire format blob. */
+ r = dns_query_new(m, &q, question, question, NULL, ifindex, flags|SD_RESOLVED_NO_SEARCH|SD_RESOLVED_CLAMP_TTL);
+ if (r < 0)
+ return r;
+
+ q->bus_request = sd_bus_message_ref(message);
+ q->complete = bus_method_resolve_record_complete;
+
+ r = dns_query_bus_track(q, message);
+ if (r < 0)
+ return r;
+
+ r = dns_query_go(q);
+ if (r < 0)
+ return r;
+
+ TAKE_PTR(q);
+ return 1;
+}
+
+static int append_srv(DnsQuery *q, sd_bus_message *reply, DnsResourceRecord *rr) {
+ _cleanup_(dns_resource_record_unrefp) DnsResourceRecord *canonical = NULL;
+ _cleanup_free_ char *normalized = NULL;
+ int r;
+
+ assert(q);
+ assert(reply);
+ assert(rr);
+ assert(rr->key);
+
+ if (rr->key->type != DNS_TYPE_SRV)
+ return 0;
+
+ if ((q->flags & SD_RESOLVED_NO_ADDRESS) == 0) {
+ /* First, let's see if we could find an appropriate A or AAAA
+ * record for the SRV record */
+ LIST_FOREACH(auxiliary_queries, aux, q->auxiliary_queries) {
+ DnsResourceRecord *zz;
+ DnsQuestion *question;
+
+ if (aux->state != DNS_TRANSACTION_SUCCESS)
+ continue;
+ if (aux->auxiliary_result != 0)
+ continue;
+
+ question = dns_query_question_for_protocol(aux, aux->answer_protocol);
+
+ r = dns_name_equal(dns_question_first_name(question), rr->srv.name);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ continue;
+
+ DNS_ANSWER_FOREACH(zz, aux->answer) {
+
+ r = dns_question_matches_rr(question, zz, NULL);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ continue;
+
+ canonical = dns_resource_record_ref(zz);
+ break;
+ }
+
+ if (canonical)
+ break;
+ }
+
+ /* Is there are successful A/AAAA lookup for this SRV RR? If not, don't add it */
+ if (!canonical)
+ return 0;
+ }
+
+ r = sd_bus_message_open_container(reply, 'r', "qqqsa(iiay)s");
+ if (r < 0)
+ return r;
+
+ r = dns_name_normalize(rr->srv.name, 0, &normalized);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_append(
+ reply,
+ "qqqs",
+ rr->srv.priority, rr->srv.weight, rr->srv.port, normalized);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_open_container(reply, 'a', "(iiay)");
+ if (r < 0)
+ return r;
+
+ if ((q->flags & SD_RESOLVED_NO_ADDRESS) == 0) {
+ LIST_FOREACH(auxiliary_queries, aux, q->auxiliary_queries) {
+ DnsResourceRecord *zz;
+ DnsQuestion *question;
+ int ifindex;
+
+ if (aux->state != DNS_TRANSACTION_SUCCESS)
+ continue;
+ if (aux->auxiliary_result != 0)
+ continue;
+
+ question = dns_query_question_for_protocol(aux, aux->answer_protocol);
+
+ r = dns_name_equal(dns_question_first_name(question), rr->srv.name);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ continue;
+
+ DNS_ANSWER_FOREACH_IFINDEX(zz, ifindex, aux->answer) {
+
+ r = dns_question_matches_rr(question, zz, NULL);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ continue;
+
+ r = append_address(reply, zz, ifindex);
+ if (r < 0)
+ return r;
+ }
+ }
+ }
+
+ r = sd_bus_message_close_container(reply);
+ if (r < 0)
+ return r;
+
+ if (canonical) {
+ normalized = mfree(normalized);
+
+ r = dns_name_normalize(dns_resource_key_name(canonical->key), 0, &normalized);
+ if (r < 0)
+ return r;
+ }
+
+ /* Note that above we appended the hostname as encoded in the
+ * SRV, and here the canonical hostname this maps to. */
+ r = sd_bus_message_append(reply, "s", normalized);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_close_container(reply);
+ if (r < 0)
+ return r;
+
+ return 1;
+}
+
+static int append_txt(sd_bus_message *reply, DnsResourceRecord *rr) {
+ int r;
+
+ assert(reply);
+ assert(rr);
+ assert(rr->key);
+
+ if (rr->key->type != DNS_TYPE_TXT)
+ return 0;
+
+ LIST_FOREACH(items, i, rr->txt.items) {
+
+ if (i->length <= 0)
+ continue;
+
+ r = sd_bus_message_append_array(reply, 'y', i->data, i->length);
+ if (r < 0)
+ return r;
+ }
+
+ return 1;
+}
+
+static void resolve_service_all_complete(DnsQuery *query) {
+ _cleanup_(dns_resource_record_unrefp) DnsResourceRecord *canonical = NULL;
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
+ _cleanup_free_ char *name = NULL, *type = NULL, *domain = NULL;
+ _cleanup_(dns_query_freep) DnsQuery *q = query;
+ DnsQuestion *question;
+ DnsResourceRecord *rr;
+ unsigned added = 0;
+ int r;
+
+ assert(q);
+
+ if (q->block_all_complete > 0) {
+ TAKE_PTR(q);
+ return;
+ }
+
+ if ((q->flags & SD_RESOLVED_NO_ADDRESS) == 0) {
+ DnsQuery *bad = NULL;
+ bool have_success = false;
+
+ LIST_FOREACH(auxiliary_queries, aux, q->auxiliary_queries) {
+
+ switch (aux->state) {
+
+ case DNS_TRANSACTION_PENDING:
+ /* If an auxiliary query is still pending, let's wait */
+ TAKE_PTR(q);
+ return;
+
+ case DNS_TRANSACTION_SUCCESS:
+ if (aux->auxiliary_result == 0)
+ have_success = true;
+ else
+ bad = aux;
+ break;
+
+ default:
+ bad = aux;
+ break;
+ }
+ }
+
+ if (!have_success) {
+ /* We can only return one error, hence pick the last error we encountered */
+
+ assert(bad);
+
+ if (bad->state == DNS_TRANSACTION_SUCCESS) {
+ assert(bad->auxiliary_result != 0);
+
+ if (bad->auxiliary_result == -ELOOP) {
+ r = reply_method_errorf(q, BUS_ERROR_CNAME_LOOP, "CNAME loop detected, or CNAME resolving disabled on '%s'", dns_query_string(bad));
+ goto finish;
+ }
+
+ assert(bad->auxiliary_result < 0);
+ r = bad->auxiliary_result;
+ goto finish;
+ }
+
+ r = reply_query_state(bad);
+ goto finish;
+ }
+ }
+
+ r = sd_bus_message_new_method_return(q->bus_request, &reply);
+ if (r < 0)
+ goto finish;
+
+ r = sd_bus_message_open_container(reply, 'a', "(qqqsa(iiay)s)");
+ if (r < 0)
+ goto finish;
+
+ question = dns_query_question_for_protocol(q, q->answer_protocol);
+
+ DNS_ANSWER_FOREACH(rr, q->answer) {
+ r = dns_question_matches_rr(question, rr, NULL);
+ if (r < 0)
+ goto finish;
+ if (r == 0)
+ continue;
+
+ r = append_srv(q, reply, rr);
+ if (r < 0)
+ goto finish;
+ if (r == 0) /* not an SRV record */
+ continue;
+
+ if (!canonical)
+ canonical = dns_resource_record_ref(rr);
+
+ added++;
+ }
+
+ if (added <= 0) {
+ r = reply_method_errorf(q, BUS_ERROR_NO_SUCH_RR, "'%s' does not have any RR of the requested type", dns_query_string(q));
+ goto finish;
+ }
+
+ r = sd_bus_message_close_container(reply);
+ if (r < 0)
+ goto finish;
+
+ r = sd_bus_message_open_container(reply, 'a', "ay");
+ if (r < 0)
+ goto finish;
+
+ DNS_ANSWER_FOREACH(rr, q->answer) {
+ r = dns_question_matches_rr(question, rr, NULL);
+ if (r < 0)
+ goto finish;
+ if (r == 0)
+ continue;
+
+ r = append_txt(reply, rr);
+ if (r < 0)
+ goto finish;
+ }
+
+ r = sd_bus_message_close_container(reply);
+ if (r < 0)
+ goto finish;
+
+ assert(canonical);
+ r = dns_service_split(dns_resource_key_name(canonical->key), &name, &type, &domain);
+ if (r < 0)
+ goto finish;
+
+ r = sd_bus_message_append(
+ reply,
+ "ssst",
+ name, type, domain,
+ dns_query_reply_flags_make(q));
+ if (r < 0)
+ goto finish;
+
+ q->bus_request = sd_bus_message_unref(q->bus_request);
+ r = sd_bus_send(q->manager->bus, reply, NULL);
+
+finish:
+ if (r < 0) {
+ log_error_errno(r, "Failed to send service reply: %m");
+ (void) reply_method_errnof(q, r, NULL);
+ }
+}
+
+static void resolve_service_hostname_complete(DnsQuery *q) {
+ int r;
+
+ assert(q);
+ assert(q->auxiliary_for);
+
+ if (q->state != DNS_TRANSACTION_SUCCESS) {
+ resolve_service_all_complete(q->auxiliary_for);
+ return;
+ }
+
+ r = dns_query_process_cname_many(q);
+ if (r == DNS_QUERY_CNAME) /* This was a cname, and the query was restarted. */
+ return;
+
+ /* This auxiliary lookup is finished or failed, let's see if all are finished now. */
+ q->auxiliary_result = r < 0 ? r : 0;
+ resolve_service_all_complete(q->auxiliary_for);
+}
+
+static int resolve_service_hostname(DnsQuery *q, DnsResourceRecord *rr, int ifindex) {
+ _cleanup_(dns_question_unrefp) DnsQuestion *question = NULL;
+ _cleanup_(dns_query_freep) DnsQuery *aux = NULL;
+ int r;
+
+ assert(q);
+ assert(rr);
+ assert(rr->key);
+ assert(rr->key->type == DNS_TYPE_SRV);
+
+ /* OK, we found an SRV record for the service. Let's resolve
+ * the hostname included in it */
+
+ r = dns_question_new_address(&question, q->request_family, rr->srv.name, false);
+ if (r < 0)
+ return r;
+
+ r = dns_query_new(q->manager, &aux, question, question, NULL, ifindex, q->flags|SD_RESOLVED_NO_SEARCH);
+ if (r < 0)
+ return r;
+
+ aux->request_family = q->request_family;
+ aux->complete = resolve_service_hostname_complete;
+
+ r = dns_query_make_auxiliary(aux, q);
+ if (r == -EAGAIN)
+ /* Too many auxiliary lookups? If so, don't complain,
+ * let's just not add this one, we already have more
+ * than enough */
+ return 0;
+ if (r < 0)
+ return r;
+
+ /* Note that auxiliary queries do not track the original bus
+ * client, only the primary request does that. */
+
+ r = dns_query_go(aux);
+ if (r < 0)
+ return r;
+
+ TAKE_PTR(aux);
+ return 1;
+}
+
+static void bus_method_resolve_service_complete(DnsQuery *query) {
+ _cleanup_(dns_query_freep) DnsQuery *q = query;
+ bool has_root_domain = false;
+ DnsResourceRecord *rr;
+ DnsQuestion *question;
+ unsigned found = 0;
+ int ifindex, r;
+
+ assert(q);
+
+ if (q->state != DNS_TRANSACTION_SUCCESS) {
+ r = reply_query_state(q);
+ goto finish;
+ }
+
+ r = dns_query_process_cname_many(q);
+ if (r == -ELOOP) {
+ r = reply_method_errorf(q, BUS_ERROR_CNAME_LOOP, "CNAME loop detected, or CNAME resolving disabled on '%s'", dns_query_string(q));
+ goto finish;
+ }
+ if (r < 0)
+ goto finish;
+ if (r == DNS_QUERY_CNAME) {
+ /* This was a cname, and the query was restarted. */
+ TAKE_PTR(q);
+ return;
+ }
+
+ question = dns_query_question_for_protocol(q, q->answer_protocol);
+
+ DNS_ANSWER_FOREACH_IFINDEX(rr, ifindex, q->answer) {
+ r = dns_question_matches_rr(question, rr, NULL);
+ if (r < 0)
+ goto finish;
+ if (r == 0)
+ continue;
+
+ if (rr->key->type != DNS_TYPE_SRV)
+ continue;
+
+ if (dns_name_is_root(rr->srv.name)) {
+ has_root_domain = true;
+ continue;
+ }
+
+ if ((q->flags & SD_RESOLVED_NO_ADDRESS) == 0) {
+ q->block_all_complete++;
+ r = resolve_service_hostname(q, rr, ifindex);
+ q->block_all_complete--;
+
+ if (r < 0)
+ goto finish;
+ }
+
+ found++;
+ }
+
+ if (has_root_domain && found <= 0) {
+ /* If there's exactly one SRV RR and it uses the root domain as hostname, then the service is
+ * explicitly not offered on the domain. Report this as a recognizable error. See RFC 2782,
+ * Section "Usage Rules". */
+ r = reply_method_errorf(q, BUS_ERROR_NO_SUCH_SERVICE, "'%s' does not provide the requested service", dns_query_string(q));
+ goto finish;
+ }
+
+ if (found <= 0) {
+ r = reply_method_errorf(q, BUS_ERROR_NO_SUCH_RR, "'%s' does not have any RR of the requested type", dns_query_string(q));
+ goto finish;
+ }
+
+ /* Maybe we are already finished? check now... */
+ resolve_service_all_complete(TAKE_PTR(q));
+ return;
+
+finish:
+ if (r < 0) {
+ log_error_errno(r, "Failed to send service reply: %m");
+ (void) reply_method_errnof(q, r, NULL);
+ }
+}
+
+static int bus_method_resolve_service(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ _cleanup_(dns_question_unrefp) DnsQuestion *question_idna = NULL, *question_utf8 = NULL;
+ _cleanup_(dns_query_freep) DnsQuery *q = NULL;
+ const char *name, *type, *domain;
+ Manager *m = ASSERT_PTR(userdata);
+ int family, ifindex;
+ uint64_t flags;
+ int r;
+
+ assert(message);
+
+ assert_cc(sizeof(int) == sizeof(int32_t));
+
+ r = sd_bus_message_read(message, "isssit", &ifindex, &name, &type, &domain, &family, &flags);
+ if (r < 0)
+ return r;
+
+ if (ifindex < 0)
+ return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid interface index");
+
+ if (!IN_SET(family, AF_INET, AF_INET6, AF_UNSPEC))
+ return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unknown address family %i", family);
+
+ if (isempty(name))
+ name = NULL;
+ else if (!dns_service_name_is_valid(name))
+ return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid service name '%s'", name);
+
+ if (isempty(type))
+ type = NULL;
+ else if (!dns_srv_type_is_valid(type))
+ return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid SRV service type '%s'", type);
+
+ r = dns_name_is_valid(domain);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid domain '%s'", domain);
+
+ if (name && !type)
+ return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Service name cannot be specified without service type.");
+
+ r = validate_and_mangle_flags(name, &flags, SD_RESOLVED_NO_TXT|SD_RESOLVED_NO_ADDRESS, error);
+ if (r < 0)
+ return r;
+
+ r = dns_question_new_service(&question_utf8, name, type, domain, !(flags & SD_RESOLVED_NO_TXT), false);
+ if (r < 0)
+ return r;
+
+ r = dns_question_new_service(&question_idna, name, type, domain, !(flags & SD_RESOLVED_NO_TXT), true);
+ if (r < 0)
+ return r;
+
+ bus_client_log(message, "service resolution");
+
+ r = dns_query_new(m, &q, question_utf8, question_idna, NULL, ifindex, flags|SD_RESOLVED_NO_SEARCH);
+ if (r < 0)
+ return r;
+
+ q->bus_request = sd_bus_message_ref(message);
+ q->request_family = family;
+ q->complete = bus_method_resolve_service_complete;
+
+ r = dns_query_bus_track(q, message);
+ if (r < 0)
+ return r;
+
+ r = dns_query_go(q);
+ if (r < 0)
+ return r;
+
+ TAKE_PTR(q);
+ return 1;
+}
+
+int bus_dns_server_append(sd_bus_message *reply, DnsServer *s, bool with_ifindex, bool extended) {
+ int r;
+
+ assert(reply);
+
+ if (!s) {
+ if (with_ifindex) {
+ if (extended)
+ return sd_bus_message_append(reply, "(iiayqs)", 0, AF_UNSPEC, 0, 0, NULL);
+ else
+ return sd_bus_message_append(reply, "(iiay)", 0, AF_UNSPEC, 0);
+ } else {
+ if (extended)
+ return sd_bus_message_append(reply, "(iayqs)", AF_UNSPEC, 0, 0, NULL);
+ else
+ return sd_bus_message_append(reply, "(iay)", AF_UNSPEC, 0);
+ }
+ }
+
+ r = sd_bus_message_open_container(reply, 'r', with_ifindex ? (extended ? "iiayqs" : "iiay") : (extended ? "iayqs" : "iay"));
+ if (r < 0)
+ return r;
+
+ if (with_ifindex) {
+ r = sd_bus_message_append(reply, "i", dns_server_ifindex(s));
+ if (r < 0)
+ return r;
+ }
+
+ r = sd_bus_message_append(reply, "i", s->family);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_append_array(reply, 'y', &s->address, FAMILY_ADDRESS_SIZE(s->family));
+ if (r < 0)
+ return r;
+
+ if (extended) {
+ r = sd_bus_message_append(reply, "q", s->port);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_append(reply, "s", s->server_name);
+ if (r < 0)
+ return r;
+ }
+
+ return sd_bus_message_close_container(reply);
+}
+
+static int bus_property_get_dns_servers_internal(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ void *userdata,
+ sd_bus_error *error,
+ bool extended) {
+
+ Manager *m = ASSERT_PTR(userdata);
+ Link *l;
+ int r;
+
+ assert(reply);
+
+ r = sd_bus_message_open_container(reply, 'a', extended ? "(iiayqs)" : "(iiay)");
+ if (r < 0)
+ return r;
+
+ LIST_FOREACH(servers, s, m->dns_servers) {
+ r = bus_dns_server_append(reply, s, true, extended);
+ if (r < 0)
+ return r;
+ }
+
+ HASHMAP_FOREACH(l, m->links)
+ LIST_FOREACH(servers, s, l->dns_servers) {
+ r = bus_dns_server_append(reply, s, true, extended);
+ if (r < 0)
+ return r;
+ }
+
+ return sd_bus_message_close_container(reply);
+}
+
+static int bus_property_get_dns_servers(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ void *userdata,
+ sd_bus_error *error) {
+ return bus_property_get_dns_servers_internal(bus, path, interface, property, reply, userdata, error, false);
+}
+
+static int bus_property_get_dns_servers_ex(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ void *userdata,
+ sd_bus_error *error) {
+ return bus_property_get_dns_servers_internal(bus, path, interface, property, reply, userdata, error, true);
+}
+
+static int bus_property_get_fallback_dns_servers_internal(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ void *userdata,
+ sd_bus_error *error,
+ bool extended) {
+
+ DnsServer **f = ASSERT_PTR(userdata);
+ int r;
+
+ assert(reply);
+
+ r = sd_bus_message_open_container(reply, 'a', extended ? "(iiayqs)" : "(iiay)");
+ if (r < 0)
+ return r;
+
+ LIST_FOREACH(servers, s, *f) {
+ r = bus_dns_server_append(reply, s, true, extended);
+ if (r < 0)
+ return r;
+ }
+
+ return sd_bus_message_close_container(reply);
+}
+
+static int bus_property_get_fallback_dns_servers(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ void *userdata,
+ sd_bus_error *error) {
+ return bus_property_get_fallback_dns_servers_internal(bus, path, interface, property, reply, userdata, error, false);
+}
+
+static int bus_property_get_fallback_dns_servers_ex(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ void *userdata,
+ sd_bus_error *error) {
+ return bus_property_get_fallback_dns_servers_internal(bus, path, interface, property, reply, userdata, error, true);
+}
+
+static int bus_property_get_current_dns_server_internal(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ void *userdata,
+ sd_bus_error *error,
+ bool extended) {
+
+ DnsServer *s;
+
+ assert(reply);
+ assert(userdata);
+
+ s = *(DnsServer **) userdata;
+
+ return bus_dns_server_append(reply, s, true, extended);
+}
+
+static int bus_property_get_current_dns_server(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ void *userdata,
+ sd_bus_error *error) {
+ return bus_property_get_current_dns_server_internal(bus, path, interface, property, reply, userdata, error, false);
+}
+
+static int bus_property_get_current_dns_server_ex(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ void *userdata,
+ sd_bus_error *error) {
+ return bus_property_get_current_dns_server_internal(bus, path, interface, property, reply, userdata, error, true);
+}
+
+static int bus_property_get_domains(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ void *userdata,
+ sd_bus_error *error) {
+
+ Manager *m = ASSERT_PTR(userdata);
+ Link *l;
+ int r;
+
+ assert(reply);
+
+ r = sd_bus_message_open_container(reply, 'a', "(isb)");
+ if (r < 0)
+ return r;
+
+ LIST_FOREACH(domains, d, m->search_domains) {
+ r = sd_bus_message_append(reply, "(isb)", 0, d->name, d->route_only);
+ if (r < 0)
+ return r;
+ }
+
+ HASHMAP_FOREACH(l, m->links) {
+ LIST_FOREACH(domains, d, l->search_domains) {
+ r = sd_bus_message_append(reply, "(isb)", l->ifindex, d->name, d->route_only);
+ if (r < 0)
+ return r;
+ }
+ }
+
+ return sd_bus_message_close_container(reply);
+}
+
+static int bus_property_get_transaction_statistics(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ void *userdata,
+ sd_bus_error *error) {
+
+ Manager *m = ASSERT_PTR(userdata);
+
+ assert(reply);
+
+ return sd_bus_message_append(reply, "(tt)",
+ (uint64_t) hashmap_size(m->dns_transactions),
+ (uint64_t) m->n_transactions_total);
+}
+
+static int bus_property_get_cache_statistics(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ void *userdata,
+ sd_bus_error *error) {
+
+ uint64_t size = 0, hit = 0, miss = 0;
+ Manager *m = ASSERT_PTR(userdata);
+
+ assert(reply);
+
+ LIST_FOREACH(scopes, s, m->dns_scopes) {
+ size += dns_cache_size(&s->cache);
+ hit += s->cache.n_hit;
+ miss += s->cache.n_miss;
+ }
+
+ return sd_bus_message_append(reply, "(ttt)", size, hit, miss);
+}
+
+static int bus_property_get_dnssec_statistics(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ void *userdata,
+ sd_bus_error *error) {
+
+ Manager *m = ASSERT_PTR(userdata);
+
+ assert(reply);
+
+ return sd_bus_message_append(reply, "(tttt)",
+ (uint64_t) m->n_dnssec_verdict[DNSSEC_SECURE],
+ (uint64_t) m->n_dnssec_verdict[DNSSEC_INSECURE],
+ (uint64_t) m->n_dnssec_verdict[DNSSEC_BOGUS],
+ (uint64_t) m->n_dnssec_verdict[DNSSEC_INDETERMINATE]);
+}
+
+static int bus_property_get_ntas(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ void *userdata,
+ sd_bus_error *error) {
+
+ Manager *m = ASSERT_PTR(userdata);
+ const char *domain;
+ int r;
+
+ assert(reply);
+
+ r = sd_bus_message_open_container(reply, 'a', "s");
+ if (r < 0)
+ return r;
+
+ SET_FOREACH(domain, m->trust_anchor.negative_by_name) {
+ r = sd_bus_message_append(reply, "s", domain);
+ if (r < 0)
+ return r;
+ }
+
+ return sd_bus_message_close_container(reply);
+}
+
+static BUS_DEFINE_PROPERTY_GET_ENUM(bus_property_get_dns_stub_listener_mode, dns_stub_listener_mode, DnsStubListenerMode);
+static BUS_DEFINE_PROPERTY_GET(bus_property_get_dnssec_supported, "b", Manager, manager_dnssec_supported);
+static BUS_DEFINE_PROPERTY_GET2(bus_property_get_dnssec_mode, "s", Manager, manager_get_dnssec_mode, dnssec_mode_to_string);
+static BUS_DEFINE_PROPERTY_GET2(bus_property_get_dns_over_tls_mode, "s", Manager, manager_get_dns_over_tls_mode, dns_over_tls_mode_to_string);
+
+static int bus_property_get_resolv_conf_mode(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ void *userdata,
+ sd_bus_error *error) {
+
+ int r;
+
+ assert(reply);
+
+ r = resolv_conf_mode();
+ if (r < 0) {
+ log_warning_errno(r, "Failed to test /etc/resolv.conf mode, ignoring: %m");
+ return sd_bus_message_append(reply, "s", NULL);
+ }
+
+ return sd_bus_message_append(reply, "s", resolv_conf_mode_to_string(r));
+}
+
+static int bus_method_reset_statistics(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ Manager *m = ASSERT_PTR(userdata);
+
+ assert(message);
+
+ bus_client_log(message, "statistics reset");
+
+ LIST_FOREACH(scopes, s, m->dns_scopes)
+ s->cache.n_hit = s->cache.n_miss = 0;
+
+ m->n_transactions_total = 0;
+ zero(m->n_dnssec_verdict);
+
+ return sd_bus_reply_method_return(message, NULL);
+}
+
+static int get_any_link(Manager *m, int ifindex, Link **ret, sd_bus_error *error) {
+ Link *l;
+
+ assert(m);
+ assert(ret);
+
+ l = hashmap_get(m->links, INT_TO_PTR(ifindex));
+ if (!l)
+ return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_LINK, "Link %i not known", ifindex);
+
+ *ret = l;
+ return 0;
+}
+
+static int call_link_method(Manager *m, sd_bus_message *message, sd_bus_message_handler_t handler, sd_bus_error *error) {
+ int ifindex, r;
+ Link *l;
+
+ assert(m);
+ assert(message);
+ assert(handler);
+
+ r = bus_message_read_ifindex(message, error, &ifindex);
+ if (r < 0)
+ return r;
+
+ r = get_any_link(m, ifindex, &l, error);
+ if (r < 0)
+ return r;
+
+ return handler(message, l, error);
+}
+
+static int bus_method_set_link_dns_servers(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ return call_link_method(userdata, message, bus_link_method_set_dns_servers, error);
+}
+
+static int bus_method_set_link_dns_servers_ex(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ return call_link_method(userdata, message, bus_link_method_set_dns_servers_ex, error);
+}
+
+static int bus_method_set_link_domains(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ return call_link_method(userdata, message, bus_link_method_set_domains, error);
+}
+
+static int bus_method_set_link_default_route(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ return call_link_method(userdata, message, bus_link_method_set_default_route, error);
+}
+
+static int bus_method_set_link_llmnr(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ return call_link_method(userdata, message, bus_link_method_set_llmnr, error);
+}
+
+static int bus_method_set_link_mdns(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ return call_link_method(userdata, message, bus_link_method_set_mdns, error);
+}
+
+static int bus_method_set_link_dns_over_tls(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ return call_link_method(userdata, message, bus_link_method_set_dns_over_tls, error);
+}
+
+static int bus_method_set_link_dnssec(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ return call_link_method(userdata, message, bus_link_method_set_dnssec, error);
+}
+
+static int bus_method_set_link_dnssec_negative_trust_anchors(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ return call_link_method(userdata, message, bus_link_method_set_dnssec_negative_trust_anchors, error);
+}
+
+static int bus_method_revert_link(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ return call_link_method(userdata, message, bus_link_method_revert, error);
+}
+
+static int bus_method_get_link(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ _cleanup_free_ char *p = NULL;
+ Manager *m = ASSERT_PTR(userdata);
+ int r, ifindex;
+ Link *l;
+
+ assert(message);
+
+ r = bus_message_read_ifindex(message, error, &ifindex);
+ if (r < 0)
+ return r;
+
+ r = get_any_link(m, ifindex, &l, error);
+ if (r < 0)
+ return r;
+
+ p = link_bus_path(l);
+ if (!p)
+ return -ENOMEM;
+
+ return sd_bus_reply_method_return(message, "o", p);
+}
+
+static int bus_method_flush_caches(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ Manager *m = ASSERT_PTR(userdata);
+
+ assert(message);
+
+ bus_client_log(message, "cache flush");
+
+ manager_flush_caches(m, LOG_INFO);
+
+ return sd_bus_reply_method_return(message, NULL);
+}
+
+static int bus_method_reset_server_features(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ Manager *m = ASSERT_PTR(userdata);
+
+ assert(message);
+
+ bus_client_log(message, "server feature reset");
+
+ manager_reset_server_features(m);
+
+ return sd_bus_reply_method_return(message, NULL);
+}
+
+static int dnssd_service_on_bus_track(sd_bus_track *t, void *userdata) {
+ DnssdService *s = ASSERT_PTR(userdata);
+
+ assert(t);
+
+ log_debug("Client of active request vanished, destroying DNS-SD service.");
+ dnssd_service_free(s);
+
+ return 0;
+}
+
+static int bus_method_register_service(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
+ _cleanup_(dnssd_service_freep) DnssdService *service = NULL;
+ _cleanup_(sd_bus_track_unrefp) sd_bus_track *bus_track = NULL;
+ const char *name, *name_template, *type;
+ _cleanup_free_ char *path = NULL;
+ DnssdService *s = NULL;
+ Manager *m = ASSERT_PTR(userdata);
+ uid_t euid;
+ int r;
+
+ assert(message);
+
+ if (m->mdns_support != RESOLVE_SUPPORT_YES)
+ return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Support for MulticastDNS is disabled");
+
+ service = new0(DnssdService, 1);
+ if (!service)
+ return log_oom();
+
+ r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_creds_get_euid(creds, &euid);
+ if (r < 0)
+ return r;
+ service->originator = euid;
+
+ r = sd_bus_message_read(message, "sssqqq", &name, &name_template, &type,
+ &service->port, &service->priority,
+ &service->weight);
+ if (r < 0)
+ return r;
+
+ s = hashmap_get(m->dnssd_services, name);
+ if (s)
+ return sd_bus_error_setf(error, BUS_ERROR_DNSSD_SERVICE_EXISTS, "DNS-SD service '%s' exists already", name);
+
+ if (!dnssd_srv_type_is_valid(type))
+ return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "DNS-SD service type '%s' is invalid", type);
+
+ service->name = strdup(name);
+ if (!service->name)
+ return log_oom();
+
+ service->name_template = strdup(name_template);
+ if (!service->name_template)
+ return log_oom();
+
+ service->type = strdup(type);
+ if (!service->type)
+ return log_oom();
+
+ r = dnssd_render_instance_name(m, service, NULL);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_enter_container(message, SD_BUS_TYPE_ARRAY, "a{say}");
+ if (r < 0)
+ return r;
+
+ while ((r = sd_bus_message_enter_container(message, SD_BUS_TYPE_ARRAY, "{say}")) > 0) {
+ _cleanup_(dnssd_txtdata_freep) DnssdTxtData *txt_data = NULL;
+ DnsTxtItem *last = NULL;
+
+ txt_data = new0(DnssdTxtData, 1);
+ if (!txt_data)
+ return log_oom();
+
+ while ((r = sd_bus_message_enter_container(message, SD_BUS_TYPE_DICT_ENTRY, "say")) > 0) {
+ const char *key;
+ const void *value;
+ size_t size;
+ DnsTxtItem *i;
+
+ r = sd_bus_message_read(message, "s", &key);
+ if (r < 0)
+ return r;
+
+ if (isempty(key))
+ return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Keys in DNS-SD TXT RRs can't be empty");
+
+ if (!ascii_is_valid(key))
+ return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "TXT key '%s' contains non-ASCII symbols", key);
+
+ r = sd_bus_message_read_array(message, 'y', &value, &size);
+ if (r < 0)
+ return r;
+
+ r = dnssd_txt_item_new_from_data(key, value, size, &i);
+ if (r < 0)
+ return r;
+
+ LIST_INSERT_AFTER(items, txt_data->txts, last, i);
+ last = i;
+
+ r = sd_bus_message_exit_container(message);
+ if (r < 0)
+ return r;
+
+ }
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_exit_container(message);
+ if (r < 0)
+ return r;
+
+ if (txt_data->txts) {
+ LIST_PREPEND(items, service->txt_data_items, txt_data);
+ txt_data = NULL;
+ }
+ }
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_exit_container(message);
+ if (r < 0)
+ return r;
+
+ if (!service->txt_data_items) {
+ _cleanup_(dnssd_txtdata_freep) DnssdTxtData *txt_data = NULL;
+
+ txt_data = new0(DnssdTxtData, 1);
+ if (!txt_data)
+ return log_oom();
+
+ r = dns_txt_item_new_empty(&txt_data->txts);
+ if (r < 0)
+ return r;
+
+ LIST_PREPEND(items, service->txt_data_items, txt_data);
+ txt_data = NULL;
+ }
+
+ r = sd_bus_path_encode("/org/freedesktop/resolve1/dnssd", service->name, &path);
+ if (r < 0)
+ return r;
+
+ r = bus_verify_polkit_async(message, CAP_SYS_ADMIN,
+ "org.freedesktop.resolve1.register-service",
+ NULL, false, UID_INVALID,
+ &m->polkit_registry, error);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ return 1; /* Polkit will call us back */
+
+ r = hashmap_ensure_put(&m->dnssd_services, &string_hash_ops, service->name, service);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_track_new(sd_bus_message_get_bus(message), &bus_track, dnssd_service_on_bus_track, service);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_track_add_sender(bus_track, message);
+ if (r < 0)
+ return r;
+
+ service->manager = m;
+
+ service = NULL;
+
+ manager_refresh_rrs(m);
+
+ return sd_bus_reply_method_return(message, "o", path);
+}
+
+static int call_dnssd_method(Manager *m, sd_bus_message *message, sd_bus_message_handler_t handler, sd_bus_error *error) {
+ _cleanup_free_ char *name = NULL;
+ DnssdService *s = NULL;
+ const char *path;
+ int r;
+
+ assert(m);
+ assert(message);
+ assert(handler);
+
+ r = sd_bus_message_read(message, "o", &path);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_path_decode(path, "/org/freedesktop/resolve1/dnssd", &name);
+ if (r == 0)
+ return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_DNSSD_SERVICE, "DNS-SD service with object path '%s' does not exist", path);
+ if (r < 0)
+ return r;
+
+ s = hashmap_get(m->dnssd_services, name);
+ if (!s)
+ return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_DNSSD_SERVICE, "DNS-SD service '%s' not known", name);
+
+ return handler(message, s, error);
+}
+
+static int bus_method_unregister_service(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ Manager *m = ASSERT_PTR(userdata);
+
+ assert(message);
+
+ return call_dnssd_method(m, message, bus_dnssd_method_unregister, error);
+}
+
+static const sd_bus_vtable resolve_vtable[] = {
+ SD_BUS_VTABLE_START(0),
+ SD_BUS_PROPERTY("LLMNRHostname", "s", NULL, offsetof(Manager, llmnr_hostname), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
+ SD_BUS_PROPERTY("LLMNR", "s", bus_property_get_resolve_support, offsetof(Manager, llmnr_support), 0),
+ SD_BUS_PROPERTY("MulticastDNS", "s", bus_property_get_resolve_support, offsetof(Manager, mdns_support), 0),
+ SD_BUS_PROPERTY("DNSOverTLS", "s", bus_property_get_dns_over_tls_mode, 0, 0),
+ SD_BUS_PROPERTY("DNS", "a(iiay)", bus_property_get_dns_servers, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
+ SD_BUS_PROPERTY("DNSEx", "a(iiayqs)", bus_property_get_dns_servers_ex, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
+ SD_BUS_PROPERTY("FallbackDNS", "a(iiay)", bus_property_get_fallback_dns_servers, offsetof(Manager, fallback_dns_servers), SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("FallbackDNSEx", "a(iiayqs)", bus_property_get_fallback_dns_servers_ex, offsetof(Manager, fallback_dns_servers), SD_BUS_VTABLE_PROPERTY_CONST),
+ SD_BUS_PROPERTY("CurrentDNSServer", "(iiay)", bus_property_get_current_dns_server, offsetof(Manager, current_dns_server), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
+ SD_BUS_PROPERTY("CurrentDNSServerEx", "(iiayqs)", bus_property_get_current_dns_server_ex, offsetof(Manager, current_dns_server), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
+ SD_BUS_PROPERTY("Domains", "a(isb)", bus_property_get_domains, 0, 0),
+ SD_BUS_PROPERTY("TransactionStatistics", "(tt)", bus_property_get_transaction_statistics, 0, 0),
+ SD_BUS_PROPERTY("CacheStatistics", "(ttt)", bus_property_get_cache_statistics, 0, 0),
+ SD_BUS_PROPERTY("DNSSEC", "s", bus_property_get_dnssec_mode, 0, 0),
+ SD_BUS_PROPERTY("DNSSECStatistics", "(tttt)", bus_property_get_dnssec_statistics, 0, 0),
+ SD_BUS_PROPERTY("DNSSECSupported", "b", bus_property_get_dnssec_supported, 0, 0),
+ SD_BUS_PROPERTY("DNSSECNegativeTrustAnchors", "as", bus_property_get_ntas, 0, 0),
+ SD_BUS_PROPERTY("DNSStubListener", "s", bus_property_get_dns_stub_listener_mode, offsetof(Manager, dns_stub_listener_mode), 0),
+ SD_BUS_PROPERTY("ResolvConfMode", "s", bus_property_get_resolv_conf_mode, 0, 0),
+
+ SD_BUS_METHOD_WITH_ARGS("ResolveHostname",
+ SD_BUS_ARGS("i", ifindex, "s", name, "i", family, "t", flags),
+ SD_BUS_RESULT("a(iiay)", addresses, "s", canonical, "t", flags),
+ bus_method_resolve_hostname,
+ SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD_WITH_ARGS("ResolveAddress",
+ SD_BUS_ARGS("i", ifindex, "i", family, "ay", address, "t", flags),
+ SD_BUS_RESULT("a(is)", names, "t", flags),
+ bus_method_resolve_address,
+ SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD_WITH_ARGS("ResolveRecord",
+ SD_BUS_ARGS("i", ifindex, "s", name, "q", class, "q", type, "t", flags),
+ SD_BUS_RESULT("a(iqqay)", records, "t", flags),
+ bus_method_resolve_record,
+ SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD_WITH_ARGS("ResolveService",
+ SD_BUS_ARGS("i", ifindex,
+ "s", name,
+ "s", type,
+ "s", domain,
+ "i", family,
+ "t", flags),
+ SD_BUS_RESULT("a(qqqsa(iiay)s)", srv_data,
+ "aay", txt_data,
+ "s", canonical_name,
+ "s", canonical_type,
+ "s", canonical_domain,
+ "t", flags),
+ bus_method_resolve_service,
+ SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD_WITH_ARGS("GetLink",
+ SD_BUS_ARGS("i", ifindex),
+ SD_BUS_RESULT("o", path),
+ bus_method_get_link,
+ SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD_WITH_ARGS("SetLinkDNS",
+ SD_BUS_ARGS("i", ifindex, "a(iay)", addresses),
+ SD_BUS_NO_RESULT,
+ bus_method_set_link_dns_servers,
+ SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD_WITH_ARGS("SetLinkDNSEx",
+ SD_BUS_ARGS("i", ifindex, "a(iayqs)", addresses),
+ SD_BUS_NO_RESULT,
+ bus_method_set_link_dns_servers_ex,
+ SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD_WITH_ARGS("SetLinkDomains",
+ SD_BUS_ARGS("i", ifindex, "a(sb)", domains),
+ SD_BUS_NO_RESULT,
+ bus_method_set_link_domains,
+ SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD_WITH_ARGS("SetLinkDefaultRoute",
+ SD_BUS_ARGS("i", ifindex, "b", enable),
+ SD_BUS_NO_RESULT,
+ bus_method_set_link_default_route,
+ SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD_WITH_ARGS("SetLinkLLMNR",
+ SD_BUS_ARGS("i", ifindex, "s", mode),
+ SD_BUS_NO_RESULT,
+ bus_method_set_link_llmnr,
+ SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD_WITH_ARGS("SetLinkMulticastDNS",
+ SD_BUS_ARGS("i", ifindex, "s", mode),
+ SD_BUS_NO_RESULT,
+ bus_method_set_link_mdns,
+ SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD_WITH_ARGS("SetLinkDNSOverTLS",
+ SD_BUS_ARGS("i", ifindex, "s", mode),
+ SD_BUS_NO_RESULT,
+ bus_method_set_link_dns_over_tls,
+ SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD_WITH_ARGS("SetLinkDNSSEC",
+ SD_BUS_ARGS("i", ifindex, "s", mode),
+ SD_BUS_NO_RESULT,
+ bus_method_set_link_dnssec,
+ SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD_WITH_ARGS("SetLinkDNSSECNegativeTrustAnchors",
+ SD_BUS_ARGS("i", ifindex, "as", names),
+ SD_BUS_NO_RESULT,
+ bus_method_set_link_dnssec_negative_trust_anchors,
+ SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD_WITH_ARGS("RevertLink",
+ SD_BUS_ARGS("i", ifindex),
+ SD_BUS_NO_RESULT,
+ bus_method_revert_link,
+ SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD_WITH_ARGS("RegisterService",
+ SD_BUS_ARGS("s", name,
+ "s", name_template,
+ "s", type,
+ "q", service_port,
+ "q", service_priority,
+ "q", service_weight,
+ "aa{say}", txt_datas),
+ SD_BUS_RESULT("o", service_path),
+ bus_method_register_service,
+ SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD_WITH_ARGS("UnregisterService",
+ SD_BUS_ARGS("o", service_path),
+ SD_BUS_NO_RESULT,
+ bus_method_unregister_service,
+ SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD_WITH_ARGS("ResetStatistics",
+ SD_BUS_NO_ARGS,
+ SD_BUS_NO_RESULT,
+ bus_method_reset_statistics,
+ SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD_WITH_ARGS("FlushCaches",
+ SD_BUS_NO_ARGS,
+ SD_BUS_NO_RESULT,
+ bus_method_flush_caches,
+ SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD_WITH_ARGS("ResetServerFeatures",
+ SD_BUS_NO_ARGS,
+ SD_BUS_NO_RESULT,
+ bus_method_reset_server_features,
+ SD_BUS_VTABLE_UNPRIVILEGED),
+
+ SD_BUS_VTABLE_END,
+};
+
+const BusObjectImplementation manager_object = {
+ "/org/freedesktop/resolve1",
+ "org.freedesktop.resolve1.Manager",
+ .vtables = BUS_VTABLES(resolve_vtable),
+ .children = BUS_IMPLEMENTATIONS(&link_object,
+ &dnssd_object),
+};
+
+static int match_prepare_for_sleep(sd_bus_message *message, void *userdata, sd_bus_error *ret_error) {
+ Manager *m = ASSERT_PTR(userdata);
+ int b, r;
+
+ assert(message);
+
+ r = sd_bus_message_read(message, "b", &b);
+ if (r < 0) {
+ bus_log_parse_error(r);
+ return 0;
+ }
+
+ if (b)
+ return 0;
+
+ log_debug("Coming back from suspend, verifying all RRs...");
+
+ manager_verify_all(m);
+ return 0;
+}
+
+int manager_connect_bus(Manager *m) {
+ int r;
+
+ assert(m);
+
+ if (m->bus)
+ return 0;
+
+ r = bus_open_system_watch_bind_with_description(&m->bus, "bus-api-resolve");
+ if (r < 0)
+ return log_error_errno(r, "Failed to connect to system bus: %m");
+
+ r = bus_add_implementation(m->bus, &manager_object, m);
+ if (r < 0)
+ return r;
+
+ r = bus_log_control_api_register(m->bus);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_request_name_async(m->bus, NULL, "org.freedesktop.resolve1", 0, NULL, NULL);
+ if (r < 0)
+ return log_error_errno(r, "Failed to request name: %m");
+
+ r = sd_bus_attach_event(m->bus, m->event, 0);
+ if (r < 0)
+ return log_error_errno(r, "Failed to attach bus to event loop: %m");
+
+ r = sd_bus_match_signal_async(
+ m->bus,
+ NULL,
+ "org.freedesktop.login1",
+ "/org/freedesktop/login1",
+ "org.freedesktop.login1.Manager",
+ "PrepareForSleep",
+ match_prepare_for_sleep,
+ NULL,
+ m);
+ if (r < 0)
+ log_warning_errno(r, "Failed to request match for PrepareForSleep, ignoring: %m");
+
+ return 0;
+}
+
+int _manager_send_changed(Manager *manager, const char *property, ...) {
+ assert(manager);
+
+ if (sd_bus_is_ready(manager->bus) <= 0)
+ return 0;
+
+ char **l = strv_from_stdarg_alloca(property);
+
+ int r = sd_bus_emit_properties_changed_strv(
+ manager->bus,
+ "/org/freedesktop/resolve1",
+ "org.freedesktop.resolve1.Manager",
+ l);
+ if (r < 0)
+ log_notice_errno(r, "Failed to emit notification about changed property %s: %m", property);
+ return r;
+}