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/>.
27 #include "alloc-util.h"
28 #include "bus-error.h"
31 #include "in-addr-util.h"
32 #include "gcrypt-util.h"
33 #include "parse-util.h"
34 #include "resolved-def.h"
35 #include "resolved-dns-packet.h"
36 #include "terminal-util.h"
38 #define DNS_CALL_TIMEOUT_USEC (45*USEC_PER_SEC)
40 static int arg_family
= AF_UNSPEC
;
41 static int arg_ifindex
= 0;
42 static uint16_t arg_type
= 0;
43 static uint16_t arg_class
= 0;
44 static bool arg_legend
= true;
45 static uint64_t arg_flags
= 0;
47 typedef enum ServiceFamily
{
51 _SERVICE_FAMILY_INVALID
= -1,
53 static ServiceFamily arg_service_family
= SERVICE_FAMILY_TCP
;
55 typedef enum RawType
{
60 static RawType arg_raw
= RAW_NONE
;
69 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_to_string(family
, a
, &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_to_string(family
, address
, &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 parse_address(const char *s
, int *family
, union in_addr_union
*address
, int *ifindex
) {
349 const char *percent
, *a
;
353 percent
= strchr(s
, '%');
355 if (parse_ifindex(percent
+1, &ifi
) < 0) {
356 ifi
= if_nametoindex(percent
+1);
361 a
= strndupa(s
, percent
- s
);
365 r
= in_addr_from_string_auto(a
, family
, address
);
373 static int output_rr_packet(const void *d
, size_t l
, int ifindex
) {
374 _cleanup_(dns_resource_record_unrefp
) DnsResourceRecord
*rr
= NULL
;
375 _cleanup_(dns_packet_unrefp
) DnsPacket
*p
= NULL
;
377 char ifname
[IF_NAMESIZE
] = "";
379 r
= dns_packet_new(&p
, DNS_PROTOCOL_DNS
, 0);
383 p
->refuse_compression
= true;
385 r
= dns_packet_append_blob(p
, d
, l
, NULL
);
389 r
= dns_packet_read_rr(p
, &rr
, NULL
, NULL
);
391 return log_error_errno(r
, "Failed to parse RR: %m");
393 if (arg_raw
== RAW_PAYLOAD
) {
397 k
= dns_resource_record_payload(rr
, &data
);
399 return log_error_errno(k
, "Cannot dump RR: %m");
400 fwrite(data
, 1, k
, stdout
);
404 s
= dns_resource_record_to_string(rr
);
408 if (ifindex
> 0 && !if_indextoname(ifindex
, ifname
))
409 log_warning_errno(errno
, "Failed to resolve interface name for index %i: %m", ifindex
);
411 printf("%s%s%s\n", s
, isempty(ifname
) ? "" : " # interface ", ifname
);
417 static int resolve_record(sd_bus
*bus
, const char *name
, uint16_t class, uint16_t type
) {
418 _cleanup_(sd_bus_message_unrefp
) sd_bus_message
*req
= NULL
, *reply
= NULL
;
419 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
420 char ifname
[IF_NAMESIZE
] = "";
425 bool needs_authentication
= false;
429 if (arg_ifindex
> 0 && !if_indextoname(arg_ifindex
, ifname
))
430 return log_error_errno(errno
, "Failed to resolve interface name for index %i: %m", arg_ifindex
);
432 log_debug("Resolving %s %s %s (interface %s).", name
, dns_class_to_string(class), dns_type_to_string(type
), isempty(ifname
) ? "*" : ifname
);
434 r
= sd_bus_message_new_method_call(
437 "org.freedesktop.resolve1",
438 "/org/freedesktop/resolve1",
439 "org.freedesktop.resolve1.Manager",
442 return bus_log_create_error(r
);
444 r
= sd_bus_message_append(req
, "isqqt", arg_ifindex
, name
, class, type
, arg_flags
);
446 return bus_log_create_error(r
);
448 ts
= now(CLOCK_MONOTONIC
);
450 r
= sd_bus_call(bus
, req
, DNS_CALL_TIMEOUT_USEC
, &error
, &reply
);
452 log_error("%s: resolve call failed: %s", name
, bus_error_message(&error
, r
));
456 ts
= now(CLOCK_MONOTONIC
) - ts
;
458 r
= sd_bus_message_enter_container(reply
, 'a', "(iqqay)");
460 return bus_log_parse_error(r
);
462 while ((r
= sd_bus_message_enter_container(reply
, 'r', "iqqay")) > 0) {
468 assert_cc(sizeof(int) == sizeof(int32_t));
470 r
= sd_bus_message_read(reply
, "iqq", &ifindex
, &c
, &t
);
472 return bus_log_parse_error(r
);
474 r
= sd_bus_message_read_array(reply
, 'y', &d
, &l
);
476 return bus_log_parse_error(r
);
478 r
= sd_bus_message_exit_container(reply
);
480 return bus_log_parse_error(r
);
482 if (arg_raw
== RAW_PACKET
) {
483 uint64_t u64
= htole64(l
);
485 fwrite(&u64
, sizeof(u64
), 1, stdout
);
486 fwrite(d
, 1, l
, stdout
);
488 r
= output_rr_packet(d
, l
, ifindex
);
493 if (dns_type_needs_authentication(t
))
494 needs_authentication
= true;
499 return bus_log_parse_error(r
);
501 r
= sd_bus_message_exit_container(reply
);
503 return bus_log_parse_error(r
);
505 r
= sd_bus_message_read(reply
, "t", &flags
);
507 return bus_log_parse_error(r
);
510 log_error("%s: no records found", name
);
514 print_source(flags
, ts
);
516 if ((flags
& SD_RESOLVED_AUTHENTICATED
) == 0 && needs_authentication
) {
519 fprintf(stderr
, "\n%s"
520 "WARNING: The resources shown contain cryptographic key data which could not be\n"
521 " authenticated. It is not suitable to authenticate any communication.\n"
522 " This is usually indication that DNSSEC authentication was not enabled\n"
523 " or is not available for the selected protocol or DNS servers.%s\n",
524 ansi_highlight_red(),
531 static int resolve_rfc4501(sd_bus
*bus
, const char *name
) {
532 uint16_t type
= 0, class = 0;
533 const char *p
, *q
, *n
;
538 assert(startswith(name
, "dns:"));
540 /* Parse RFC 4501 dns: URIs */
550 e
= strchr(p
+ 2, '/');
555 log_warning("DNS authority specification not supported; ignoring specified authority.");
562 n
= strndupa(p
, q
- p
);
568 f
= startswith_no_case(q
, "class=");
570 _cleanup_free_
char *t
= NULL
;
574 log_error("DNS class specified twice.");
578 e
= strchrnul(f
, ';');
579 t
= strndup(f
, e
- f
);
583 r
= dns_class_from_string(t
);
585 log_error("Unknown DNS class %s.", t
);
599 f
= startswith_no_case(q
, "type=");
601 _cleanup_free_
char *t
= NULL
;
605 log_error("DNS type specified twice.");
609 e
= strchrnul(f
, ';');
610 t
= strndup(f
, e
- f
);
614 r
= dns_type_from_string(t
);
616 log_error("Unknown DNS type %s.", t
);
636 class = arg_class
?: DNS_CLASS_IN
;
638 type
= arg_type
?: DNS_TYPE_A
;
640 return resolve_record(bus
, n
, class, type
);
643 log_error("Invalid DNS URI: %s", name
);
647 static int resolve_service(sd_bus
*bus
, const char *name
, const char *type
, const char *domain
) {
648 const char *canonical_name
, *canonical_type
, *canonical_domain
;
649 _cleanup_(sd_bus_message_unrefp
) sd_bus_message
*req
= NULL
, *reply
= NULL
;
650 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
651 char ifname
[IF_NAMESIZE
] = "";
667 if (arg_ifindex
> 0 && !if_indextoname(arg_ifindex
, ifname
))
668 return log_error_errno(errno
, "Failed to resolve interface name for index %i: %m", arg_ifindex
);
671 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
);
673 log_debug("Resolving service type %s of %s (family %s, interface %s).", type
, domain
, af_to_name(arg_family
) ?: "*", isempty(ifname
) ? "*" : ifname
);
675 log_debug("Resolving service type %s (family %s, interface %s).", domain
, af_to_name(arg_family
) ?: "*", isempty(ifname
) ? "*" : ifname
);
677 r
= sd_bus_message_new_method_call(
680 "org.freedesktop.resolve1",
681 "/org/freedesktop/resolve1",
682 "org.freedesktop.resolve1.Manager",
685 return bus_log_create_error(r
);
687 r
= sd_bus_message_append(req
, "isssit", arg_ifindex
, name
, type
, domain
, arg_family
, arg_flags
);
689 return bus_log_create_error(r
);
691 ts
= now(CLOCK_MONOTONIC
);
693 r
= sd_bus_call(bus
, req
, DNS_CALL_TIMEOUT_USEC
, &error
, &reply
);
695 return log_error_errno(r
, "Resolve call failed: %s", bus_error_message(&error
, r
));
697 ts
= now(CLOCK_MONOTONIC
) - ts
;
699 r
= sd_bus_message_enter_container(reply
, 'a', "(qqqsa(iiay)s)");
701 return bus_log_parse_error(r
);
704 (name
? strlen(name
) + 1 : 0) +
705 (type
? strlen(type
) + 1 : 0) +
709 while ((r
= sd_bus_message_enter_container(reply
, 'r', "qqqsa(iiay)s")) > 0) {
710 uint16_t priority
, weight
, port
;
711 const char *hostname
, *canonical
;
713 r
= sd_bus_message_read(reply
, "qqqs", &priority
, &weight
, &port
, &hostname
);
715 return bus_log_parse_error(r
);
718 printf("%*s%s", (int) strlen(name
), c
== 0 ? name
: "", c
== 0 ? "/" : " ");
720 printf("%*s%s", (int) strlen(type
), c
== 0 ? type
: "", c
== 0 ? "/" : " ");
722 printf("%*s%s %s:%u [priority=%u, weight=%u]\n",
723 (int) strlen(domain
), c
== 0 ? domain
: "",
728 r
= sd_bus_message_enter_container(reply
, 'a', "(iiay)");
730 return bus_log_parse_error(r
);
732 while ((r
= sd_bus_message_enter_container(reply
, 'r', "iiay")) > 0) {
733 _cleanup_free_
char *pretty
= NULL
;
737 assert_cc(sizeof(int) == sizeof(int32_t));
739 r
= sd_bus_message_read(reply
, "ii", &ifindex
, &family
);
741 return bus_log_parse_error(r
);
743 r
= sd_bus_message_read_array(reply
, 'y', &a
, &sz
);
745 return bus_log_parse_error(r
);
747 r
= sd_bus_message_exit_container(reply
);
749 return bus_log_parse_error(r
);
751 if (!IN_SET(family
, AF_INET
, AF_INET6
)) {
752 log_debug("%s: skipping entry with family %d (%s)", name
, family
, af_to_name(family
) ?: "unknown");
756 if (sz
!= FAMILY_ADDRESS_SIZE(family
)) {
757 log_error("%s: systemd-resolved returned address of invalid size %zu for family %s", name
, sz
, af_to_name(family
) ?: "unknown");
762 if (ifindex
> 0 && !if_indextoname(ifindex
, ifname
))
763 log_warning_errno(errno
, "Failed to resolve interface name for index %i: %m", ifindex
);
765 r
= in_addr_to_string(family
, a
, &pretty
);
767 return log_error_errno(r
, "Failed to print address for %s: %m", name
);
769 printf("%*s%s%s%s\n", (int) indent
, "", pretty
, isempty(ifname
) ? "" : "%s", ifname
);
772 return bus_log_parse_error(r
);
774 r
= sd_bus_message_exit_container(reply
);
776 return bus_log_parse_error(r
);
778 r
= sd_bus_message_read(reply
, "s", &canonical
);
780 return bus_log_parse_error(r
);
782 if (!streq(hostname
, canonical
))
783 printf("%*s(%s)\n", (int) indent
, "", canonical
);
785 r
= sd_bus_message_exit_container(reply
);
787 return bus_log_parse_error(r
);
792 return bus_log_parse_error(r
);
794 r
= sd_bus_message_exit_container(reply
);
796 return bus_log_parse_error(r
);
798 r
= sd_bus_message_enter_container(reply
, 'a', "ay");
800 return bus_log_parse_error(r
);
803 while ((r
= sd_bus_message_read_array(reply
, 'y', (const void**) &p
, &sz
)) > 0) {
804 _cleanup_free_
char *escaped
= NULL
;
806 escaped
= cescape_length(p
, sz
);
810 printf("%*s%s\n", (int) indent
, "", escaped
);
814 return bus_log_parse_error(r
);
816 r
= sd_bus_message_exit_container(reply
);
818 return bus_log_parse_error(r
);
820 r
= sd_bus_message_read(reply
, "ssst", &canonical_name
, &canonical_type
, &canonical_domain
, &flags
);
822 return bus_log_parse_error(r
);
824 if (isempty(canonical_name
))
825 canonical_name
= NULL
;
826 if (isempty(canonical_type
))
827 canonical_type
= NULL
;
829 if (!streq_ptr(name
, canonical_name
) ||
830 !streq_ptr(type
, canonical_type
) ||
831 !streq_ptr(domain
, canonical_domain
)) {
833 printf("%*s(", (int) indent
, "");
836 printf("%s/", canonical_name
);
838 printf("%s/", canonical_type
);
840 printf("%s)\n", canonical_domain
);
843 print_source(flags
, ts
);
848 static int resolve_openpgp(sd_bus
*bus
, const char *address
) {
849 const char *domain
, *full
;
851 _cleanup_free_
char *hashed
= NULL
;
856 domain
= strrchr(address
, '@');
858 log_error("Address does not contain '@': \"%s\"", address
);
860 } else if (domain
== address
|| domain
[1] == '\0') {
861 log_error("Address starts or ends with '@': \"%s\"", address
);
866 r
= string_hashsum(address
, domain
- 1 - address
, GCRY_MD_SHA224
, &hashed
);
868 return log_error_errno(r
, "Hashing failed: %m");
870 full
= strjoina(hashed
, "._openpgpkey.", domain
);
871 log_debug("Looking up \"%s\".", full
);
873 return resolve_record(bus
, full
,
874 arg_class
?: DNS_CLASS_IN
,
875 arg_type
?: DNS_TYPE_OPENPGPKEY
);
878 static int resolve_tlsa(sd_bus
*bus
, const char *address
) {
880 uint16_t port_num
= 443;
881 _cleanup_free_
char *full
= NULL
;
887 port
= strrchr(address
, ':');
889 r
= safe_atou16(port
+ 1, &port_num
);
890 if (r
< 0 || port_num
== 0)
891 return log_error_errno(r
, "Invalid port \"%s\".", port
+ 1);
893 address
= strndupa(address
, port
- address
);
896 r
= asprintf(&full
, "_%u.%s.%s",
898 service_family_to_string(arg_service_family
),
903 log_debug("Looking up \"%s\".", full
);
905 return resolve_record(bus
, full
,
906 arg_class
?: DNS_CLASS_IN
,
907 arg_type
?: DNS_TYPE_TLSA
);
910 static int show_statistics(sd_bus
*bus
) {
911 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
912 _cleanup_(sd_bus_message_unrefp
) sd_bus_message
*reply
= NULL
;
913 uint64_t n_current_transactions
, n_total_transactions
,
914 cache_size
, n_cache_hit
, n_cache_miss
,
915 n_dnssec_secure
, n_dnssec_insecure
, n_dnssec_bogus
, n_dnssec_indeterminate
;
916 int r
, dnssec_supported
;
920 r
= sd_bus_get_property_trivial(bus
,
921 "org.freedesktop.resolve1",
922 "/org/freedesktop/resolve1",
923 "org.freedesktop.resolve1.Manager",
929 return log_error_errno(r
, "Failed to get DNSSEC supported state: %s", bus_error_message(&error
, r
));
931 printf("DNSSEC supported by current servers: %s%s%s\n\n",
933 yes_no(dnssec_supported
),
936 r
= sd_bus_get_property(bus
,
937 "org.freedesktop.resolve1",
938 "/org/freedesktop/resolve1",
939 "org.freedesktop.resolve1.Manager",
940 "TransactionStatistics",
945 return log_error_errno(r
, "Failed to get transaction statistics: %s", bus_error_message(&error
, r
));
947 r
= sd_bus_message_read(reply
, "(tt)",
948 &n_current_transactions
,
949 &n_total_transactions
);
951 return bus_log_parse_error(r
);
953 printf("%sTransactions%s\n"
954 "Current Transactions: %" PRIu64
"\n"
955 " Total Transactions: %" PRIu64
"\n",
958 n_current_transactions
,
959 n_total_transactions
);
961 reply
= sd_bus_message_unref(reply
);
963 r
= sd_bus_get_property(bus
,
964 "org.freedesktop.resolve1",
965 "/org/freedesktop/resolve1",
966 "org.freedesktop.resolve1.Manager",
972 return log_error_errno(r
, "Failed to get cache statistics: %s", bus_error_message(&error
, r
));
974 r
= sd_bus_message_read(reply
, "(ttt)",
979 return bus_log_parse_error(r
);
981 printf("\n%sCache%s\n"
982 " Current Cache Size: %" PRIu64
"\n"
983 " Cache Hits: %" PRIu64
"\n"
984 " Cache Misses: %" PRIu64
"\n",
991 reply
= sd_bus_message_unref(reply
);
993 r
= sd_bus_get_property(bus
,
994 "org.freedesktop.resolve1",
995 "/org/freedesktop/resolve1",
996 "org.freedesktop.resolve1.Manager",
1002 return log_error_errno(r
, "Failed to get DNSSEC statistics: %s", bus_error_message(&error
, r
));
1004 r
= sd_bus_message_read(reply
, "(tttt)",
1008 &n_dnssec_indeterminate
);
1010 return bus_log_parse_error(r
);
1012 printf("\n%sDNSSEC Verdicts%s\n"
1013 " Secure: %" PRIu64
"\n"
1014 " Insecure: %" PRIu64
"\n"
1015 " Bogus: %" PRIu64
"\n"
1016 " Indeterminate: %" PRIu64
"\n",
1022 n_dnssec_indeterminate
);
1027 static int reset_statistics(sd_bus
*bus
) {
1028 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
1031 r
= sd_bus_call_method(bus
,
1032 "org.freedesktop.resolve1",
1033 "/org/freedesktop/resolve1",
1034 "org.freedesktop.resolve1.Manager",
1040 return log_error_errno(r
, "Failed to reset statistics: %s", bus_error_message(&error
, r
));
1045 static void help_protocol_types(void) {
1047 puts("Known protocol types:");
1048 puts("dns\nllmnr\nllmnr-ipv4\nllmnr-ipv6");
1051 static void help_dns_types(void) {
1056 puts("Known DNS RR types:");
1057 for (i
= 0; i
< _DNS_TYPE_MAX
; i
++) {
1058 t
= dns_type_to_string(i
);
1064 static void help_dns_classes(void) {
1069 puts("Known DNS RR classes:");
1070 for (i
= 0; i
< _DNS_CLASS_MAX
; i
++) {
1071 t
= dns_class_to_string(i
);
1077 static void help(void) {
1078 printf("%1$s [OPTIONS...] HOSTNAME|ADDRESS...\n"
1079 "%1$s [OPTIONS...] --service [[NAME] TYPE] DOMAIN\n"
1080 "%1$s [OPTIONS...] --openpgp EMAIL@DOMAIN...\n"
1081 "%1$s [OPTIONS...] --statistics\n"
1082 "%1$s [OPTIONS...] --reset-statistics\n"
1084 "Resolve domain names, IPv4 and IPv6 addresses, DNS resource records, and services.\n\n"
1085 " -h --help Show this help\n"
1086 " --version Show package version\n"
1087 " -4 Resolve IPv4 addresses\n"
1088 " -6 Resolve IPv6 addresses\n"
1089 " -i --interface=INTERFACE Look on interface\n"
1090 " -p --protocol=PROTO|help Look via protocol\n"
1091 " -t --type=TYPE|help Query RR with DNS type\n"
1092 " -c --class=CLASS|help Query RR with DNS class\n"
1093 " --service Resolve service (SRV)\n"
1094 " --service-address=BOOL Resolve address for services (default: yes)\n"
1095 " --service-txt=BOOL Resolve TXT records for services (default: yes)\n"
1096 " --openpgp Query OpenPGP public key\n"
1097 " --tlsa Query TLS public key\n"
1098 " --cname=BOOL Follow CNAME redirects (default: yes)\n"
1099 " --search=BOOL Use search domains for single-label names\n"
1101 " --raw[=payload|packet] Dump the answer as binary data\n"
1102 " --legend=BOOL Print headers and additional info (default: yes)\n"
1103 " --statistics Show resolver statistics\n"
1104 " --reset-statistics Reset resolver statistics\n"
1105 , program_invocation_short_name
);
1108 static int parse_argv(int argc
, char *argv
[]) {
1110 ARG_VERSION
= 0x100,
1114 ARG_SERVICE_ADDRESS
,
1121 ARG_RESET_STATISTICS
,
1124 static const struct option options
[] = {
1125 { "help", no_argument
, NULL
, 'h' },
1126 { "version", no_argument
, NULL
, ARG_VERSION
},
1127 { "type", required_argument
, NULL
, 't' },
1128 { "class", required_argument
, NULL
, 'c' },
1129 { "legend", required_argument
, NULL
, ARG_LEGEND
},
1130 { "interface", required_argument
, NULL
, 'i' },
1131 { "protocol", required_argument
, NULL
, 'p' },
1132 { "cname", required_argument
, NULL
, ARG_CNAME
},
1133 { "service", no_argument
, NULL
, ARG_SERVICE
},
1134 { "service-address", required_argument
, NULL
, ARG_SERVICE_ADDRESS
},
1135 { "service-txt", required_argument
, NULL
, ARG_SERVICE_TXT
},
1136 { "openpgp", no_argument
, NULL
, ARG_OPENPGP
},
1137 { "tlsa", optional_argument
, NULL
, ARG_TLSA
},
1138 { "raw", optional_argument
, NULL
, ARG_RAW
},
1139 { "search", required_argument
, NULL
, ARG_SEARCH
},
1140 { "statistics", no_argument
, NULL
, ARG_STATISTICS
, },
1141 { "reset-statistics", no_argument
, NULL
, ARG_RESET_STATISTICS
},
1150 while ((c
= getopt_long(argc
, argv
, "h46i:t:c:p:", options
, NULL
)) >= 0)
1155 return 0; /* done */;
1161 arg_family
= AF_INET
;
1165 arg_family
= AF_INET6
;
1171 if (parse_ifindex(optarg
, &ifi
) >= 0)
1174 ifi
= if_nametoindex(optarg
);
1176 return log_error_errno(errno
, "Unknown interface %s: %m", optarg
);
1185 if (streq(optarg
, "help")) {
1190 r
= dns_type_from_string(optarg
);
1192 log_error("Failed to parse RR record type %s", optarg
);
1195 arg_type
= (uint16_t) r
;
1196 assert((int) arg_type
== r
);
1198 arg_mode
= MODE_RESOLVE_RECORD
;
1202 if (streq(optarg
, "help")) {
1207 r
= dns_class_from_string(optarg
);
1209 log_error("Failed to parse RR record class %s", optarg
);
1212 arg_class
= (uint16_t) r
;
1213 assert((int) arg_class
== r
);
1218 r
= parse_boolean(optarg
);
1220 return log_error_errno(r
, "Failed to parse --legend= argument");
1226 if (streq(optarg
, "help")) {
1227 help_protocol_types();
1229 } else if (streq(optarg
, "dns"))
1230 arg_flags
|= SD_RESOLVED_DNS
;
1231 else if (streq(optarg
, "llmnr"))
1232 arg_flags
|= SD_RESOLVED_LLMNR
;
1233 else if (streq(optarg
, "llmnr-ipv4"))
1234 arg_flags
|= SD_RESOLVED_LLMNR_IPV4
;
1235 else if (streq(optarg
, "llmnr-ipv6"))
1236 arg_flags
|= SD_RESOLVED_LLMNR_IPV6
;
1238 log_error("Unknown protocol specifier: %s", optarg
);
1245 arg_mode
= MODE_RESOLVE_SERVICE
;
1249 arg_mode
= MODE_RESOLVE_OPENPGP
;
1253 arg_mode
= MODE_RESOLVE_TLSA
;
1254 arg_service_family
= service_family_from_string(optarg
);
1255 if (arg_service_family
< 0) {
1256 log_error("Unknown service family \"%s\".", optarg
);
1263 log_error("Refusing to write binary data to tty.");
1267 if (optarg
== NULL
|| streq(optarg
, "payload"))
1268 arg_raw
= RAW_PAYLOAD
;
1269 else if (streq(optarg
, "packet"))
1270 arg_raw
= RAW_PACKET
;
1272 log_error("Unknown --raw specifier \"%s\".", optarg
);
1280 r
= parse_boolean(optarg
);
1282 return log_error_errno(r
, "Failed to parse --cname= argument.");
1283 SET_FLAG(arg_flags
, SD_RESOLVED_NO_CNAME
, r
== 0);
1286 case ARG_SERVICE_ADDRESS
:
1287 r
= parse_boolean(optarg
);
1289 return log_error_errno(r
, "Failed to parse --service-address= argument.");
1290 SET_FLAG(arg_flags
, SD_RESOLVED_NO_ADDRESS
, r
== 0);
1293 case ARG_SERVICE_TXT
:
1294 r
= parse_boolean(optarg
);
1296 return log_error_errno(r
, "Failed to parse --service-txt= argument.");
1297 SET_FLAG(arg_flags
, SD_RESOLVED_NO_TXT
, r
== 0);
1301 r
= parse_boolean(optarg
);
1303 return log_error_errno(r
, "Failed to parse --search argument.");
1304 SET_FLAG(arg_flags
, SD_RESOLVED_NO_SEARCH
, r
== 0);
1307 case ARG_STATISTICS
:
1308 arg_mode
= MODE_STATISTICS
;
1311 case ARG_RESET_STATISTICS
:
1312 arg_mode
= MODE_RESET_STATISTICS
;
1319 assert_not_reached("Unhandled option");
1322 if (arg_type
== 0 && arg_class
!= 0) {
1323 log_error("--class= may only be used in conjunction with --type=.");
1327 if (arg_type
!= 0 && arg_mode
== MODE_RESOLVE_SERVICE
) {
1328 log_error("--service and --type= may not be combined.");
1332 if (arg_type
!= 0 && arg_class
== 0)
1333 arg_class
= DNS_CLASS_IN
;
1335 if (arg_class
!= 0 && arg_type
== 0)
1336 arg_type
= DNS_TYPE_A
;
1338 return 1 /* work to do */;
1341 int main(int argc
, char **argv
) {
1342 _cleanup_(sd_bus_flush_close_unrefp
) sd_bus
*bus
= NULL
;
1345 log_parse_environment();
1348 r
= parse_argv(argc
, argv
);
1352 r
= sd_bus_open_system(&bus
);
1354 log_error_errno(r
, "sd_bus_open_system: %m");
1360 case MODE_RESOLVE_HOST
:
1361 if (optind
>= argc
) {
1362 log_error("No arguments passed.");
1367 while (argv
[optind
]) {
1368 int family
, ifindex
, k
;
1369 union in_addr_union a
;
1371 if (startswith(argv
[optind
], "dns:"))
1372 k
= resolve_rfc4501(bus
, argv
[optind
]);
1374 k
= parse_address(argv
[optind
], &family
, &a
, &ifindex
);
1376 k
= resolve_address(bus
, family
, &a
, ifindex
);
1378 k
= resolve_host(bus
, argv
[optind
]);
1388 case MODE_RESOLVE_RECORD
:
1389 if (optind
>= argc
) {
1390 log_error("No arguments passed.");
1395 while (argv
[optind
]) {
1398 k
= resolve_record(bus
, argv
[optind
], arg_class
, arg_type
);
1406 case MODE_RESOLVE_SERVICE
:
1407 if (argc
< optind
+ 1) {
1408 log_error("Domain specification required.");
1412 } else if (argc
== optind
+ 1)
1413 r
= resolve_service(bus
, NULL
, NULL
, argv
[optind
]);
1414 else if (argc
== optind
+ 2)
1415 r
= resolve_service(bus
, NULL
, argv
[optind
], argv
[optind
+1]);
1416 else if (argc
== optind
+ 3)
1417 r
= resolve_service(bus
, argv
[optind
], argv
[optind
+1], argv
[optind
+2]);
1419 log_error("Too many arguments.");
1426 case MODE_RESOLVE_OPENPGP
:
1427 if (argc
< optind
+ 1) {
1428 log_error("E-mail address required.");
1435 while (optind
< argc
) {
1438 k
= resolve_openpgp(bus
, argv
[optind
++]);
1444 case MODE_RESOLVE_TLSA
:
1445 if (argc
< optind
+ 1) {
1446 log_error("Domain name required.");
1453 while (optind
< argc
) {
1456 k
= resolve_tlsa(bus
, argv
[optind
++]);
1462 case MODE_STATISTICS
:
1463 if (argc
> optind
) {
1464 log_error("Too many arguments.");
1469 r
= show_statistics(bus
);
1472 case MODE_RESET_STATISTICS
:
1473 if (argc
> optind
) {
1474 log_error("Too many arguments.");
1479 r
= reset_statistics(bus
);
1484 return r
== 0 ? EXIT_SUCCESS
: EXIT_FAILURE
;