2 This file is part of systemd.
4 Copyright 2014 Zbigniew Jędrzejewski-Szmek
6 systemd is free software; you can redistribute it and/or modify it
7 under the terms of the GNU Lesser General Public License as published by
8 the Free Software Foundation; either version 2.1 of the License, or
9 (at your option) any later version.
11 systemd is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public License
17 along with systemd; If not, see <http://www.gnu.org/licenses/>.
26 #include "alloc-util.h"
27 #include "bus-error.h"
30 #include "in-addr-util.h"
31 #include "gcrypt-util.h"
32 #include "parse-util.h"
33 #include "resolved-def.h"
34 #include "resolved-dns-packet.h"
35 #include "terminal-util.h"
37 #define DNS_CALL_TIMEOUT_USEC (45*USEC_PER_SEC)
39 static int arg_family
= AF_UNSPEC
;
40 static int arg_ifindex
= 0;
41 static uint16_t arg_type
= 0;
42 static uint16_t arg_class
= 0;
43 static bool arg_legend
= true;
44 static uint64_t arg_flags
= 0;
46 typedef enum ServiceFamily
{
50 _SERVICE_FAMILY_INVALID
= -1,
52 static ServiceFamily arg_service_family
= SERVICE_FAMILY_TCP
;
54 typedef enum RawType
{
59 static RawType arg_raw
= RAW_NONE
;
68 MODE_RESET_STATISTICS
,
70 } arg_mode
= MODE_RESOLVE_HOST
;
72 static ServiceFamily
service_family_from_string(const char *s
) {
73 if (s
== NULL
|| streq(s
, "tcp"))
74 return SERVICE_FAMILY_TCP
;
76 return SERVICE_FAMILY_UDP
;
78 return SERVICE_FAMILY_SCTP
;
79 return _SERVICE_FAMILY_INVALID
;
82 static const char* service_family_to_string(ServiceFamily service
) {
84 case SERVICE_FAMILY_TCP
:
86 case SERVICE_FAMILY_UDP
:
88 case SERVICE_FAMILY_SCTP
:
91 assert_not_reached("invalid service");
95 static void print_source(uint64_t flags
, usec_t rtt
) {
96 char rtt_str
[FORMAT_TIMESTAMP_MAX
];
104 fputs("\n-- Information acquired via", stdout
);
107 printf(" protocol%s%s%s%s%s",
108 flags
& SD_RESOLVED_DNS
? " DNS" :"",
109 flags
& SD_RESOLVED_LLMNR_IPV4
? " LLMNR/IPv4" : "",
110 flags
& SD_RESOLVED_LLMNR_IPV6
? " LLMNR/IPv6" : "",
111 flags
& SD_RESOLVED_MDNS_IPV4
? "mDNS/IPv4" : "",
112 flags
& SD_RESOLVED_MDNS_IPV6
? "mDNS/IPv6" : "");
114 assert_se(format_timespan(rtt_str
, sizeof(rtt_str
), rtt
, 100));
116 printf(" in %s", rtt_str
);
121 printf("-- Data is authenticated: %s\n", yes_no(flags
& SD_RESOLVED_AUTHENTICATED
));
124 static int resolve_host(sd_bus
*bus
, const char *name
) {
126 _cleanup_(sd_bus_message_unrefp
) sd_bus_message
*req
= NULL
, *reply
= NULL
;
127 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
128 const char *canonical
= NULL
;
129 char ifname
[IF_NAMESIZE
] = "";
137 if (arg_ifindex
> 0 && !if_indextoname(arg_ifindex
, ifname
))
138 return log_error_errno(errno
, "Failed to resolve interface name for index %i: %m", arg_ifindex
);
140 log_debug("Resolving %s (family %s, interface %s).", name
, af_to_name(arg_family
) ?: "*", isempty(ifname
) ? "*" : ifname
);
142 r
= sd_bus_message_new_method_call(
145 "org.freedesktop.resolve1",
146 "/org/freedesktop/resolve1",
147 "org.freedesktop.resolve1.Manager",
150 return bus_log_create_error(r
);
152 r
= sd_bus_message_append(req
, "isit", arg_ifindex
, name
, arg_family
, arg_flags
);
154 return bus_log_create_error(r
);
156 ts
= now(CLOCK_MONOTONIC
);
158 r
= sd_bus_call(bus
, req
, DNS_CALL_TIMEOUT_USEC
, &error
, &reply
);
160 return log_error_errno(r
, "%s: resolve call failed: %s", name
, bus_error_message(&error
, r
));
162 ts
= now(CLOCK_MONOTONIC
) - ts
;
164 r
= sd_bus_message_enter_container(reply
, 'a', "(iiay)");
166 return bus_log_parse_error(r
);
168 while ((r
= sd_bus_message_enter_container(reply
, 'r', "iiay")) > 0) {
169 _cleanup_free_
char *pretty
= NULL
;
174 assert_cc(sizeof(int) == sizeof(int32_t));
176 r
= sd_bus_message_read(reply
, "ii", &ifindex
, &family
);
178 return bus_log_parse_error(r
);
180 r
= sd_bus_message_read_array(reply
, 'y', &a
, &sz
);
182 return bus_log_parse_error(r
);
184 r
= sd_bus_message_exit_container(reply
);
186 return bus_log_parse_error(r
);
188 if (!IN_SET(family
, AF_INET
, AF_INET6
)) {
189 log_debug("%s: skipping entry with family %d (%s)", name
, family
, af_to_name(family
) ?: "unknown");
193 if (sz
!= FAMILY_ADDRESS_SIZE(family
)) {
194 log_error("%s: systemd-resolved returned address of invalid size %zu for family %s", name
, sz
, af_to_name(family
) ?: "unknown");
199 if (ifindex
> 0 && !if_indextoname(ifindex
, ifname
))
200 log_warning_errno(errno
, "Failed to resolve interface name for index %i: %m", ifindex
);
202 r
= in_addr_ifindex_to_string(family
, a
, ifindex
, &pretty
);
204 return log_error_errno(r
, "Failed to print address for %s: %m", name
);
206 printf("%*s%s %s%s%s\n",
207 (int) strlen(name
), c
== 0 ? name
: "", c
== 0 ? ":" : " ",
209 isempty(ifname
) ? "" : "%", ifname
);
214 return bus_log_parse_error(r
);
216 r
= sd_bus_message_exit_container(reply
);
218 return bus_log_parse_error(r
);
220 r
= sd_bus_message_read(reply
, "st", &canonical
, &flags
);
222 return bus_log_parse_error(r
);
224 if (!streq(name
, canonical
))
225 printf("%*s%s (%s)\n",
226 (int) strlen(name
), c
== 0 ? name
: "", c
== 0 ? ":" : " ",
230 log_error("%s: no addresses found", name
);
234 print_source(flags
, ts
);
239 static int resolve_address(sd_bus
*bus
, int family
, const union in_addr_union
*address
, int ifindex
) {
240 _cleanup_(sd_bus_message_unrefp
) sd_bus_message
*req
= NULL
, *reply
= NULL
;
241 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
242 _cleanup_free_
char *pretty
= NULL
;
243 char ifname
[IF_NAMESIZE
] = "";
250 assert(IN_SET(family
, AF_INET
, AF_INET6
));
254 ifindex
= arg_ifindex
;
256 r
= in_addr_ifindex_to_string(family
, address
, ifindex
, &pretty
);
260 if (ifindex
> 0 && !if_indextoname(ifindex
, ifname
))
261 return log_error_errno(errno
, "Failed to resolve interface name for index %i: %m", ifindex
);
263 log_debug("Resolving %s%s%s.", pretty
, isempty(ifname
) ? "" : "%", ifname
);
265 r
= sd_bus_message_new_method_call(
268 "org.freedesktop.resolve1",
269 "/org/freedesktop/resolve1",
270 "org.freedesktop.resolve1.Manager",
273 return bus_log_create_error(r
);
275 r
= sd_bus_message_append(req
, "ii", ifindex
, family
);
277 return bus_log_create_error(r
);
279 r
= sd_bus_message_append_array(req
, 'y', address
, FAMILY_ADDRESS_SIZE(family
));
281 return bus_log_create_error(r
);
283 r
= sd_bus_message_append(req
, "t", arg_flags
);
285 return bus_log_create_error(r
);
287 ts
= now(CLOCK_MONOTONIC
);
289 r
= sd_bus_call(bus
, req
, DNS_CALL_TIMEOUT_USEC
, &error
, &reply
);
291 log_error("%s: resolve call failed: %s", pretty
, bus_error_message(&error
, r
));
295 ts
= now(CLOCK_MONOTONIC
) - ts
;
297 r
= sd_bus_message_enter_container(reply
, 'a', "(is)");
299 return bus_log_create_error(r
);
301 while ((r
= sd_bus_message_enter_container(reply
, 'r', "is")) > 0) {
304 assert_cc(sizeof(int) == sizeof(int32_t));
306 r
= sd_bus_message_read(reply
, "is", &ifindex
, &n
);
310 r
= sd_bus_message_exit_container(reply
);
315 if (ifindex
> 0 && !if_indextoname(ifindex
, ifname
))
316 log_warning_errno(errno
, "Failed to resolve interface name for index %i: %m", ifindex
);
318 printf("%*s%*s%*s%s %s\n",
319 (int) strlen(pretty
), c
== 0 ? pretty
: "",
320 isempty(ifname
) ? 0 : 1, c
> 0 || isempty(ifname
) ? "" : "%",
321 (int) strlen(ifname
), c
== 0 ? ifname
: "",
328 return bus_log_parse_error(r
);
330 r
= sd_bus_message_exit_container(reply
);
332 return bus_log_parse_error(r
);
334 r
= sd_bus_message_read(reply
, "t", &flags
);
336 return bus_log_parse_error(r
);
339 log_error("%s: no names found", pretty
);
343 print_source(flags
, ts
);
348 static int output_rr_packet(const void *d
, size_t l
, int ifindex
) {
349 _cleanup_(dns_resource_record_unrefp
) DnsResourceRecord
*rr
= NULL
;
350 _cleanup_(dns_packet_unrefp
) DnsPacket
*p
= NULL
;
352 char ifname
[IF_NAMESIZE
] = "";
354 r
= dns_packet_new(&p
, DNS_PROTOCOL_DNS
, 0);
358 p
->refuse_compression
= true;
360 r
= dns_packet_append_blob(p
, d
, l
, NULL
);
364 r
= dns_packet_read_rr(p
, &rr
, NULL
, NULL
);
366 return log_error_errno(r
, "Failed to parse RR: %m");
368 if (arg_raw
== RAW_PAYLOAD
) {
372 k
= dns_resource_record_payload(rr
, &data
);
374 return log_error_errno(k
, "Cannot dump RR: %m");
375 fwrite(data
, 1, k
, stdout
);
379 s
= dns_resource_record_to_string(rr
);
383 if (ifindex
> 0 && !if_indextoname(ifindex
, ifname
))
384 log_warning_errno(errno
, "Failed to resolve interface name for index %i: %m", ifindex
);
386 printf("%s%s%s\n", s
, isempty(ifname
) ? "" : " # interface ", ifname
);
392 static int resolve_record(sd_bus
*bus
, const char *name
, uint16_t class, uint16_t type
) {
393 _cleanup_(sd_bus_message_unrefp
) sd_bus_message
*req
= NULL
, *reply
= NULL
;
394 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
395 char ifname
[IF_NAMESIZE
] = "";
400 bool needs_authentication
= false;
404 if (arg_ifindex
> 0 && !if_indextoname(arg_ifindex
, ifname
))
405 return log_error_errno(errno
, "Failed to resolve interface name for index %i: %m", arg_ifindex
);
407 log_debug("Resolving %s %s %s (interface %s).", name
, dns_class_to_string(class), dns_type_to_string(type
), isempty(ifname
) ? "*" : ifname
);
409 r
= sd_bus_message_new_method_call(
412 "org.freedesktop.resolve1",
413 "/org/freedesktop/resolve1",
414 "org.freedesktop.resolve1.Manager",
417 return bus_log_create_error(r
);
419 r
= sd_bus_message_append(req
, "isqqt", arg_ifindex
, name
, class, type
, arg_flags
);
421 return bus_log_create_error(r
);
423 ts
= now(CLOCK_MONOTONIC
);
425 r
= sd_bus_call(bus
, req
, DNS_CALL_TIMEOUT_USEC
, &error
, &reply
);
427 log_error("%s: resolve call failed: %s", name
, bus_error_message(&error
, r
));
431 ts
= now(CLOCK_MONOTONIC
) - ts
;
433 r
= sd_bus_message_enter_container(reply
, 'a', "(iqqay)");
435 return bus_log_parse_error(r
);
437 while ((r
= sd_bus_message_enter_container(reply
, 'r', "iqqay")) > 0) {
443 assert_cc(sizeof(int) == sizeof(int32_t));
445 r
= sd_bus_message_read(reply
, "iqq", &ifindex
, &c
, &t
);
447 return bus_log_parse_error(r
);
449 r
= sd_bus_message_read_array(reply
, 'y', &d
, &l
);
451 return bus_log_parse_error(r
);
453 r
= sd_bus_message_exit_container(reply
);
455 return bus_log_parse_error(r
);
457 if (arg_raw
== RAW_PACKET
) {
458 uint64_t u64
= htole64(l
);
460 fwrite(&u64
, sizeof(u64
), 1, stdout
);
461 fwrite(d
, 1, l
, stdout
);
463 r
= output_rr_packet(d
, l
, ifindex
);
468 if (dns_type_needs_authentication(t
))
469 needs_authentication
= true;
474 return bus_log_parse_error(r
);
476 r
= sd_bus_message_exit_container(reply
);
478 return bus_log_parse_error(r
);
480 r
= sd_bus_message_read(reply
, "t", &flags
);
482 return bus_log_parse_error(r
);
485 log_error("%s: no records found", name
);
489 print_source(flags
, ts
);
491 if ((flags
& SD_RESOLVED_AUTHENTICATED
) == 0 && needs_authentication
) {
494 fprintf(stderr
, "\n%s"
495 "WARNING: The resources shown contain cryptographic key data which could not be\n"
496 " authenticated. It is not suitable to authenticate any communication.\n"
497 " This is usually indication that DNSSEC authentication was not enabled\n"
498 " or is not available for the selected protocol or DNS servers.%s\n",
499 ansi_highlight_red(),
506 static int resolve_rfc4501(sd_bus
*bus
, const char *name
) {
507 uint16_t type
= 0, class = 0;
508 const char *p
, *q
, *n
;
513 assert(startswith(name
, "dns:"));
515 /* Parse RFC 4501 dns: URIs */
525 e
= strchr(p
+ 2, '/');
530 log_warning("DNS authority specification not supported; ignoring specified authority.");
537 n
= strndupa(p
, q
- p
);
543 f
= startswith_no_case(q
, "class=");
545 _cleanup_free_
char *t
= NULL
;
549 log_error("DNS class specified twice.");
553 e
= strchrnul(f
, ';');
554 t
= strndup(f
, e
- f
);
558 r
= dns_class_from_string(t
);
560 log_error("Unknown DNS class %s.", t
);
574 f
= startswith_no_case(q
, "type=");
576 _cleanup_free_
char *t
= NULL
;
580 log_error("DNS type specified twice.");
584 e
= strchrnul(f
, ';');
585 t
= strndup(f
, e
- f
);
589 r
= dns_type_from_string(t
);
591 log_error("Unknown DNS type %s.", t
);
611 class = arg_class
?: DNS_CLASS_IN
;
613 type
= arg_type
?: DNS_TYPE_A
;
615 return resolve_record(bus
, n
, class, type
);
618 log_error("Invalid DNS URI: %s", name
);
622 static int resolve_service(sd_bus
*bus
, const char *name
, const char *type
, const char *domain
) {
623 const char *canonical_name
, *canonical_type
, *canonical_domain
;
624 _cleanup_(sd_bus_message_unrefp
) sd_bus_message
*req
= NULL
, *reply
= NULL
;
625 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
626 char ifname
[IF_NAMESIZE
] = "";
637 name
= empty_to_null(name
);
638 type
= empty_to_null(type
);
640 if (arg_ifindex
> 0 && !if_indextoname(arg_ifindex
, ifname
))
641 return log_error_errno(errno
, "Failed to resolve interface name for index %i: %m", arg_ifindex
);
644 log_debug("Resolving service \"%s\" of type %s in %s (family %s, interface %s).", name
, type
, domain
, af_to_name(arg_family
) ?: "*", isempty(ifname
) ? "*" : ifname
);
646 log_debug("Resolving service type %s of %s (family %s, interface %s).", type
, domain
, af_to_name(arg_family
) ?: "*", isempty(ifname
) ? "*" : ifname
);
648 log_debug("Resolving service type %s (family %s, interface %s).", domain
, af_to_name(arg_family
) ?: "*", isempty(ifname
) ? "*" : ifname
);
650 r
= sd_bus_message_new_method_call(
653 "org.freedesktop.resolve1",
654 "/org/freedesktop/resolve1",
655 "org.freedesktop.resolve1.Manager",
658 return bus_log_create_error(r
);
660 r
= sd_bus_message_append(req
, "isssit", arg_ifindex
, name
, type
, domain
, arg_family
, arg_flags
);
662 return bus_log_create_error(r
);
664 ts
= now(CLOCK_MONOTONIC
);
666 r
= sd_bus_call(bus
, req
, DNS_CALL_TIMEOUT_USEC
, &error
, &reply
);
668 return log_error_errno(r
, "Resolve call failed: %s", bus_error_message(&error
, r
));
670 ts
= now(CLOCK_MONOTONIC
) - ts
;
672 r
= sd_bus_message_enter_container(reply
, 'a', "(qqqsa(iiay)s)");
674 return bus_log_parse_error(r
);
677 (name
? strlen(name
) + 1 : 0) +
678 (type
? strlen(type
) + 1 : 0) +
682 while ((r
= sd_bus_message_enter_container(reply
, 'r', "qqqsa(iiay)s")) > 0) {
683 uint16_t priority
, weight
, port
;
684 const char *hostname
, *canonical
;
686 r
= sd_bus_message_read(reply
, "qqqs", &priority
, &weight
, &port
, &hostname
);
688 return bus_log_parse_error(r
);
691 printf("%*s%s", (int) strlen(name
), c
== 0 ? name
: "", c
== 0 ? "/" : " ");
693 printf("%*s%s", (int) strlen(type
), c
== 0 ? type
: "", c
== 0 ? "/" : " ");
695 printf("%*s%s %s:%u [priority=%u, weight=%u]\n",
696 (int) strlen(domain
), c
== 0 ? domain
: "",
701 r
= sd_bus_message_enter_container(reply
, 'a', "(iiay)");
703 return bus_log_parse_error(r
);
705 while ((r
= sd_bus_message_enter_container(reply
, 'r', "iiay")) > 0) {
706 _cleanup_free_
char *pretty
= NULL
;
710 assert_cc(sizeof(int) == sizeof(int32_t));
712 r
= sd_bus_message_read(reply
, "ii", &ifindex
, &family
);
714 return bus_log_parse_error(r
);
716 r
= sd_bus_message_read_array(reply
, 'y', &a
, &sz
);
718 return bus_log_parse_error(r
);
720 r
= sd_bus_message_exit_container(reply
);
722 return bus_log_parse_error(r
);
724 if (!IN_SET(family
, AF_INET
, AF_INET6
)) {
725 log_debug("%s: skipping entry with family %d (%s)", name
, family
, af_to_name(family
) ?: "unknown");
729 if (sz
!= FAMILY_ADDRESS_SIZE(family
)) {
730 log_error("%s: systemd-resolved returned address of invalid size %zu for family %s", name
, sz
, af_to_name(family
) ?: "unknown");
735 if (ifindex
> 0 && !if_indextoname(ifindex
, ifname
))
736 log_warning_errno(errno
, "Failed to resolve interface name for index %i: %m", ifindex
);
738 r
= in_addr_to_string(family
, a
, &pretty
);
740 return log_error_errno(r
, "Failed to print address for %s: %m", name
);
742 printf("%*s%s%s%s\n", (int) indent
, "", pretty
, isempty(ifname
) ? "" : "%s", ifname
);
745 return bus_log_parse_error(r
);
747 r
= sd_bus_message_exit_container(reply
);
749 return bus_log_parse_error(r
);
751 r
= sd_bus_message_read(reply
, "s", &canonical
);
753 return bus_log_parse_error(r
);
755 if (!streq(hostname
, canonical
))
756 printf("%*s(%s)\n", (int) indent
, "", canonical
);
758 r
= sd_bus_message_exit_container(reply
);
760 return bus_log_parse_error(r
);
765 return bus_log_parse_error(r
);
767 r
= sd_bus_message_exit_container(reply
);
769 return bus_log_parse_error(r
);
771 r
= sd_bus_message_enter_container(reply
, 'a', "ay");
773 return bus_log_parse_error(r
);
776 while ((r
= sd_bus_message_read_array(reply
, 'y', (const void**) &p
, &sz
)) > 0) {
777 _cleanup_free_
char *escaped
= NULL
;
779 escaped
= cescape_length(p
, sz
);
783 printf("%*s%s\n", (int) indent
, "", escaped
);
787 return bus_log_parse_error(r
);
789 r
= sd_bus_message_exit_container(reply
);
791 return bus_log_parse_error(r
);
793 r
= sd_bus_message_read(reply
, "ssst", &canonical_name
, &canonical_type
, &canonical_domain
, &flags
);
795 return bus_log_parse_error(r
);
797 canonical_name
= empty_to_null(canonical_name
);
798 canonical_type
= empty_to_null(canonical_type
);
800 if (!streq_ptr(name
, canonical_name
) ||
801 !streq_ptr(type
, canonical_type
) ||
802 !streq_ptr(domain
, canonical_domain
)) {
804 printf("%*s(", (int) indent
, "");
807 printf("%s/", canonical_name
);
809 printf("%s/", canonical_type
);
811 printf("%s)\n", canonical_domain
);
814 print_source(flags
, ts
);
819 static int resolve_openpgp(sd_bus
*bus
, const char *address
) {
820 const char *domain
, *full
;
822 _cleanup_free_
char *hashed
= NULL
;
827 domain
= strrchr(address
, '@');
829 log_error("Address does not contain '@': \"%s\"", address
);
831 } else if (domain
== address
|| domain
[1] == '\0') {
832 log_error("Address starts or ends with '@': \"%s\"", address
);
837 r
= string_hashsum_sha224(address
, domain
- 1 - address
, &hashed
);
839 return log_error_errno(r
, "Hashing failed: %m");
841 full
= strjoina(hashed
, "._openpgpkey.", domain
);
842 log_debug("Looking up \"%s\".", full
);
844 return resolve_record(bus
, full
,
845 arg_class
?: DNS_CLASS_IN
,
846 arg_type
?: DNS_TYPE_OPENPGPKEY
);
849 static int resolve_tlsa(sd_bus
*bus
, const char *address
) {
851 uint16_t port_num
= 443;
852 _cleanup_free_
char *full
= NULL
;
858 port
= strrchr(address
, ':');
860 r
= safe_atou16(port
+ 1, &port_num
);
861 if (r
< 0 || port_num
== 0)
862 return log_error_errno(r
, "Invalid port \"%s\".", port
+ 1);
864 address
= strndupa(address
, port
- address
);
867 r
= asprintf(&full
, "_%u.%s.%s",
869 service_family_to_string(arg_service_family
),
874 log_debug("Looking up \"%s\".", full
);
876 return resolve_record(bus
, full
,
877 arg_class
?: DNS_CLASS_IN
,
878 arg_type
?: DNS_TYPE_TLSA
);
881 static int show_statistics(sd_bus
*bus
) {
882 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
883 _cleanup_(sd_bus_message_unrefp
) sd_bus_message
*reply
= NULL
;
884 uint64_t n_current_transactions
, n_total_transactions
,
885 cache_size
, n_cache_hit
, n_cache_miss
,
886 n_dnssec_secure
, n_dnssec_insecure
, n_dnssec_bogus
, n_dnssec_indeterminate
;
887 int r
, dnssec_supported
;
891 r
= sd_bus_get_property_trivial(bus
,
892 "org.freedesktop.resolve1",
893 "/org/freedesktop/resolve1",
894 "org.freedesktop.resolve1.Manager",
900 return log_error_errno(r
, "Failed to get DNSSEC supported state: %s", bus_error_message(&error
, r
));
902 printf("DNSSEC supported by current servers: %s%s%s\n\n",
904 yes_no(dnssec_supported
),
907 r
= sd_bus_get_property(bus
,
908 "org.freedesktop.resolve1",
909 "/org/freedesktop/resolve1",
910 "org.freedesktop.resolve1.Manager",
911 "TransactionStatistics",
916 return log_error_errno(r
, "Failed to get transaction statistics: %s", bus_error_message(&error
, r
));
918 r
= sd_bus_message_read(reply
, "(tt)",
919 &n_current_transactions
,
920 &n_total_transactions
);
922 return bus_log_parse_error(r
);
924 printf("%sTransactions%s\n"
925 "Current Transactions: %" PRIu64
"\n"
926 " Total Transactions: %" PRIu64
"\n",
929 n_current_transactions
,
930 n_total_transactions
);
932 reply
= sd_bus_message_unref(reply
);
934 r
= sd_bus_get_property(bus
,
935 "org.freedesktop.resolve1",
936 "/org/freedesktop/resolve1",
937 "org.freedesktop.resolve1.Manager",
943 return log_error_errno(r
, "Failed to get cache statistics: %s", bus_error_message(&error
, r
));
945 r
= sd_bus_message_read(reply
, "(ttt)",
950 return bus_log_parse_error(r
);
952 printf("\n%sCache%s\n"
953 " Current Cache Size: %" PRIu64
"\n"
954 " Cache Hits: %" PRIu64
"\n"
955 " Cache Misses: %" PRIu64
"\n",
962 reply
= sd_bus_message_unref(reply
);
964 r
= sd_bus_get_property(bus
,
965 "org.freedesktop.resolve1",
966 "/org/freedesktop/resolve1",
967 "org.freedesktop.resolve1.Manager",
973 return log_error_errno(r
, "Failed to get DNSSEC statistics: %s", bus_error_message(&error
, r
));
975 r
= sd_bus_message_read(reply
, "(tttt)",
979 &n_dnssec_indeterminate
);
981 return bus_log_parse_error(r
);
983 printf("\n%sDNSSEC Verdicts%s\n"
984 " Secure: %" PRIu64
"\n"
985 " Insecure: %" PRIu64
"\n"
986 " Bogus: %" PRIu64
"\n"
987 " Indeterminate: %" PRIu64
"\n",
993 n_dnssec_indeterminate
);
998 static int reset_statistics(sd_bus
*bus
) {
999 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
1002 r
= sd_bus_call_method(bus
,
1003 "org.freedesktop.resolve1",
1004 "/org/freedesktop/resolve1",
1005 "org.freedesktop.resolve1.Manager",
1011 return log_error_errno(r
, "Failed to reset statistics: %s", bus_error_message(&error
, r
));
1016 static int flush_caches(sd_bus
*bus
) {
1017 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
1020 r
= sd_bus_call_method(bus
,
1021 "org.freedesktop.resolve1",
1022 "/org/freedesktop/resolve1",
1023 "org.freedesktop.resolve1.Manager",
1029 return log_error_errno(r
, "Failed to flush caches: %s", bus_error_message(&error
, r
));
1034 static void help_protocol_types(void) {
1036 puts("Known protocol types:");
1037 puts("dns\nllmnr\nllmnr-ipv4\nllmnr-ipv6");
1040 static void help_dns_types(void) {
1045 puts("Known DNS RR types:");
1046 for (i
= 0; i
< _DNS_TYPE_MAX
; i
++) {
1047 t
= dns_type_to_string(i
);
1053 static void help_dns_classes(void) {
1058 puts("Known DNS RR classes:");
1059 for (i
= 0; i
< _DNS_CLASS_MAX
; i
++) {
1060 t
= dns_class_to_string(i
);
1066 static void help(void) {
1067 printf("%1$s [OPTIONS...] HOSTNAME|ADDRESS...\n"
1068 "%1$s [OPTIONS...] --service [[NAME] TYPE] DOMAIN\n"
1069 "%1$s [OPTIONS...] --openpgp EMAIL@DOMAIN...\n"
1070 "%1$s [OPTIONS...] --statistics\n"
1071 "%1$s [OPTIONS...] --reset-statistics\n"
1073 "Resolve domain names, IPv4 and IPv6 addresses, DNS resource records, and services.\n\n"
1074 " -h --help Show this help\n"
1075 " --version Show package version\n"
1076 " -4 Resolve IPv4 addresses\n"
1077 " -6 Resolve IPv6 addresses\n"
1078 " -i --interface=INTERFACE Look on interface\n"
1079 " -p --protocol=PROTO|help Look via protocol\n"
1080 " -t --type=TYPE|help Query RR with DNS type\n"
1081 " -c --class=CLASS|help Query RR with DNS class\n"
1082 " --service Resolve service (SRV)\n"
1083 " --service-address=BOOL Resolve address for services (default: yes)\n"
1084 " --service-txt=BOOL Resolve TXT records for services (default: yes)\n"
1085 " --openpgp Query OpenPGP public key\n"
1086 " --tlsa Query TLS public key\n"
1087 " --cname=BOOL Follow CNAME redirects (default: yes)\n"
1088 " --search=BOOL Use search domains for single-label names\n"
1090 " --raw[=payload|packet] Dump the answer as binary data\n"
1091 " --legend=BOOL Print headers and additional info (default: yes)\n"
1092 " --statistics Show resolver statistics\n"
1093 " --reset-statistics Reset resolver statistics\n"
1094 " --flush-caches Flush all local DNS caches\n"
1095 , program_invocation_short_name
);
1098 static int parse_argv(int argc
, char *argv
[]) {
1100 ARG_VERSION
= 0x100,
1104 ARG_SERVICE_ADDRESS
,
1111 ARG_RESET_STATISTICS
,
1115 static const struct option options
[] = {
1116 { "help", no_argument
, NULL
, 'h' },
1117 { "version", no_argument
, NULL
, ARG_VERSION
},
1118 { "type", required_argument
, NULL
, 't' },
1119 { "class", required_argument
, NULL
, 'c' },
1120 { "legend", required_argument
, NULL
, ARG_LEGEND
},
1121 { "interface", required_argument
, NULL
, 'i' },
1122 { "protocol", required_argument
, NULL
, 'p' },
1123 { "cname", required_argument
, NULL
, ARG_CNAME
},
1124 { "service", no_argument
, NULL
, ARG_SERVICE
},
1125 { "service-address", required_argument
, NULL
, ARG_SERVICE_ADDRESS
},
1126 { "service-txt", required_argument
, NULL
, ARG_SERVICE_TXT
},
1127 { "openpgp", no_argument
, NULL
, ARG_OPENPGP
},
1128 { "tlsa", optional_argument
, NULL
, ARG_TLSA
},
1129 { "raw", optional_argument
, NULL
, ARG_RAW
},
1130 { "search", required_argument
, NULL
, ARG_SEARCH
},
1131 { "statistics", no_argument
, NULL
, ARG_STATISTICS
, },
1132 { "reset-statistics", no_argument
, NULL
, ARG_RESET_STATISTICS
},
1133 { "flush-caches", no_argument
, NULL
, ARG_FLUSH_CACHES
},
1142 while ((c
= getopt_long(argc
, argv
, "h46i:t:c:p:", options
, NULL
)) >= 0)
1147 return 0; /* done */;
1153 arg_family
= AF_INET
;
1157 arg_family
= AF_INET6
;
1163 if (parse_ifindex(optarg
, &ifi
) >= 0)
1166 ifi
= if_nametoindex(optarg
);
1168 return log_error_errno(errno
, "Unknown interface %s: %m", optarg
);
1177 if (streq(optarg
, "help")) {
1182 r
= dns_type_from_string(optarg
);
1184 log_error("Failed to parse RR record type %s", optarg
);
1187 arg_type
= (uint16_t) r
;
1188 assert((int) arg_type
== r
);
1190 arg_mode
= MODE_RESOLVE_RECORD
;
1194 if (streq(optarg
, "help")) {
1199 r
= dns_class_from_string(optarg
);
1201 log_error("Failed to parse RR record class %s", optarg
);
1204 arg_class
= (uint16_t) r
;
1205 assert((int) arg_class
== r
);
1210 r
= parse_boolean(optarg
);
1212 return log_error_errno(r
, "Failed to parse --legend= argument");
1218 if (streq(optarg
, "help")) {
1219 help_protocol_types();
1221 } else if (streq(optarg
, "dns"))
1222 arg_flags
|= SD_RESOLVED_DNS
;
1223 else if (streq(optarg
, "llmnr"))
1224 arg_flags
|= SD_RESOLVED_LLMNR
;
1225 else if (streq(optarg
, "llmnr-ipv4"))
1226 arg_flags
|= SD_RESOLVED_LLMNR_IPV4
;
1227 else if (streq(optarg
, "llmnr-ipv6"))
1228 arg_flags
|= SD_RESOLVED_LLMNR_IPV6
;
1230 log_error("Unknown protocol specifier: %s", optarg
);
1237 arg_mode
= MODE_RESOLVE_SERVICE
;
1241 arg_mode
= MODE_RESOLVE_OPENPGP
;
1245 arg_mode
= MODE_RESOLVE_TLSA
;
1246 arg_service_family
= service_family_from_string(optarg
);
1247 if (arg_service_family
< 0) {
1248 log_error("Unknown service family \"%s\".", optarg
);
1255 log_error("Refusing to write binary data to tty.");
1259 if (optarg
== NULL
|| streq(optarg
, "payload"))
1260 arg_raw
= RAW_PAYLOAD
;
1261 else if (streq(optarg
, "packet"))
1262 arg_raw
= RAW_PACKET
;
1264 log_error("Unknown --raw specifier \"%s\".", optarg
);
1272 r
= parse_boolean(optarg
);
1274 return log_error_errno(r
, "Failed to parse --cname= argument.");
1275 SET_FLAG(arg_flags
, SD_RESOLVED_NO_CNAME
, r
== 0);
1278 case ARG_SERVICE_ADDRESS
:
1279 r
= parse_boolean(optarg
);
1281 return log_error_errno(r
, "Failed to parse --service-address= argument.");
1282 SET_FLAG(arg_flags
, SD_RESOLVED_NO_ADDRESS
, r
== 0);
1285 case ARG_SERVICE_TXT
:
1286 r
= parse_boolean(optarg
);
1288 return log_error_errno(r
, "Failed to parse --service-txt= argument.");
1289 SET_FLAG(arg_flags
, SD_RESOLVED_NO_TXT
, r
== 0);
1293 r
= parse_boolean(optarg
);
1295 return log_error_errno(r
, "Failed to parse --search argument.");
1296 SET_FLAG(arg_flags
, SD_RESOLVED_NO_SEARCH
, r
== 0);
1299 case ARG_STATISTICS
:
1300 arg_mode
= MODE_STATISTICS
;
1303 case ARG_RESET_STATISTICS
:
1304 arg_mode
= MODE_RESET_STATISTICS
;
1307 case ARG_FLUSH_CACHES
:
1308 arg_mode
= MODE_FLUSH_CACHES
;
1315 assert_not_reached("Unhandled option");
1318 if (arg_type
== 0 && arg_class
!= 0) {
1319 log_error("--class= may only be used in conjunction with --type=.");
1323 if (arg_type
!= 0 && arg_mode
== MODE_RESOLVE_SERVICE
) {
1324 log_error("--service and --type= may not be combined.");
1328 if (arg_type
!= 0 && arg_class
== 0)
1329 arg_class
= DNS_CLASS_IN
;
1331 if (arg_class
!= 0 && arg_type
== 0)
1332 arg_type
= DNS_TYPE_A
;
1334 return 1 /* work to do */;
1337 int main(int argc
, char **argv
) {
1338 _cleanup_(sd_bus_flush_close_unrefp
) sd_bus
*bus
= NULL
;
1341 log_parse_environment();
1344 r
= parse_argv(argc
, argv
);
1348 r
= sd_bus_open_system(&bus
);
1350 log_error_errno(r
, "sd_bus_open_system: %m");
1356 case MODE_RESOLVE_HOST
:
1357 if (optind
>= argc
) {
1358 log_error("No arguments passed.");
1363 while (argv
[optind
]) {
1364 int family
, ifindex
, k
;
1365 union in_addr_union a
;
1367 if (startswith(argv
[optind
], "dns:"))
1368 k
= resolve_rfc4501(bus
, argv
[optind
]);
1370 k
= in_addr_ifindex_from_string_auto(argv
[optind
], &family
, &a
, &ifindex
);
1372 k
= resolve_address(bus
, family
, &a
, ifindex
);
1374 k
= resolve_host(bus
, argv
[optind
]);
1384 case MODE_RESOLVE_RECORD
:
1385 if (optind
>= argc
) {
1386 log_error("No arguments passed.");
1391 while (argv
[optind
]) {
1394 k
= resolve_record(bus
, argv
[optind
], arg_class
, arg_type
);
1402 case MODE_RESOLVE_SERVICE
:
1403 if (argc
< optind
+ 1) {
1404 log_error("Domain specification required.");
1408 } else if (argc
== optind
+ 1)
1409 r
= resolve_service(bus
, NULL
, NULL
, argv
[optind
]);
1410 else if (argc
== optind
+ 2)
1411 r
= resolve_service(bus
, NULL
, argv
[optind
], argv
[optind
+1]);
1412 else if (argc
== optind
+ 3)
1413 r
= resolve_service(bus
, argv
[optind
], argv
[optind
+1], argv
[optind
+2]);
1415 log_error("Too many arguments.");
1422 case MODE_RESOLVE_OPENPGP
:
1423 if (argc
< optind
+ 1) {
1424 log_error("E-mail address required.");
1431 while (optind
< argc
) {
1434 k
= resolve_openpgp(bus
, argv
[optind
++]);
1440 case MODE_RESOLVE_TLSA
:
1441 if (argc
< optind
+ 1) {
1442 log_error("Domain name required.");
1449 while (optind
< argc
) {
1452 k
= resolve_tlsa(bus
, argv
[optind
++]);
1458 case MODE_STATISTICS
:
1459 if (argc
> optind
) {
1460 log_error("Too many arguments.");
1465 r
= show_statistics(bus
);
1468 case MODE_RESET_STATISTICS
:
1469 if (argc
> optind
) {
1470 log_error("Too many arguments.");
1475 r
= reset_statistics(bus
);
1478 case MODE_FLUSH_CACHES
:
1479 if (argc
> optind
) {
1480 log_error("Too many arguments.");
1485 r
= flush_caches(bus
);
1490 return r
== 0 ? EXIT_SUCCESS
: EXIT_FAILURE
;