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src.rivoreo.one / systemd-stable / v246-rc1 / . / src / resolve / resolvectl.c
blob: c01524b9cc5a3a6c3fa6efbc756402c5a8d0adb4 [file] [log] [blame] [raw]
/* SPDX-License-Identifier: LGPL-2.1+ */
#include <getopt.h>
#include <locale.h>
#include <net/if.h>
#include "sd-bus.h"
#include "sd-netlink.h"
#include "af-list.h"
#include "alloc-util.h"
#include "bus-common-errors.h"
#include "bus-error.h"
#include "bus-locator.h"
#include "bus-map-properties.h"
#include "dns-domain.h"
#include "escape.h"
#include "format-table.h"
#include "format-util.h"
#include "gcrypt-util.h"
#include "main-func.h"
#include "missing_network.h"
#include "netlink-util.h"
#include "pager.h"
#include "parse-util.h"
#include "pretty-print.h"
#include "resolvconf-compat.h"
#include "resolvectl.h"
#include "resolved-def.h"
#include "resolved-dns-packet.h"
#include "socket-netlink.h"
#include "sort-util.h"
#include "stdio-util.h"
#include "string-table.h"
#include "strv.h"
#include "terminal-util.h"
#include "verbs.h"
static int arg_family = AF_UNSPEC;
static int arg_ifindex = 0;
static char *arg_ifname = NULL;
static uint16_t arg_type = 0;
static uint16_t arg_class = 0;
static bool arg_legend = true;
static uint64_t arg_flags = 0;
static PagerFlags arg_pager_flags = 0;
bool arg_ifindex_permissive = false; /* If true, don't generate an error if the specified interface index doesn't exist */
static const char *arg_service_family = NULL;
typedef enum RawType {
RAW_NONE,
RAW_PAYLOAD,
RAW_PACKET,
} RawType;
static RawType arg_raw = RAW_NONE;
ExecutionMode arg_mode = MODE_RESOLVE_HOST;
char **arg_set_dns = NULL;
char **arg_set_domain = NULL;
static const char *arg_set_llmnr = NULL;
static const char *arg_set_mdns = NULL;
static const char *arg_set_dns_over_tls = NULL;
static const char *arg_set_dnssec = NULL;
static char **arg_set_nta = NULL;
STATIC_DESTRUCTOR_REGISTER(arg_ifname, freep);
STATIC_DESTRUCTOR_REGISTER(arg_set_dns, strv_freep);
STATIC_DESTRUCTOR_REGISTER(arg_set_domain, strv_freep);
STATIC_DESTRUCTOR_REGISTER(arg_set_nta, strv_freep);
typedef enum StatusMode {
STATUS_ALL,
STATUS_DNS,
STATUS_DOMAIN,
STATUS_DEFAULT_ROUTE,
STATUS_LLMNR,
STATUS_MDNS,
STATUS_PRIVATE,
STATUS_DNSSEC,
STATUS_NTA,
} StatusMode;
typedef struct InterfaceInfo {
int index;
const char *name;
} InterfaceInfo;
static int interface_info_compare(const InterfaceInfo *a, const InterfaceInfo *b) {
int r;
r = CMP(a->index, b->index);
if (r != 0)
return r;
return strcmp_ptr(a->name, b->name);
}
int ifname_mangle(const char *s) {
_cleanup_free_ char *iface = NULL;
const char *dot;
int ifi;
assert(s);
dot = strchr(s, '.');
if (dot) {
log_debug("Ignoring protocol specifier '%s'.", dot + 1);
iface = strndup(s, dot - s);
} else
iface = strdup(s);
if (!iface)
return log_oom();
ifi = resolve_interface(NULL, iface);
if (ifi < 0) {
if (ifi == -ENODEV && arg_ifindex_permissive) {
log_debug("Interface '%s' not found, but -f specified, ignoring.", iface);
return 0; /* done */
}
return log_error_errno(ifi, "Failed to resolve interface \"%s\": %m", iface);
}
if (arg_ifindex > 0 && arg_ifindex != ifi)
return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Specified multiple different interfaces. Refusing.");
arg_ifindex = ifi;
free_and_replace(arg_ifname, iface);
return 1;
}
static void print_source(uint64_t flags, usec_t rtt) {
char rtt_str[FORMAT_TIMESTAMP_MAX];
if (!arg_legend)
return;
if (flags == 0)
return;
printf("\n%s-- Information acquired via", ansi_grey());
if (flags != 0)
printf(" protocol%s%s%s%s%s",
flags & SD_RESOLVED_DNS ? " DNS" :"",
flags & SD_RESOLVED_LLMNR_IPV4 ? " LLMNR/IPv4" : "",
flags & SD_RESOLVED_LLMNR_IPV6 ? " LLMNR/IPv6" : "",
flags & SD_RESOLVED_MDNS_IPV4 ? " mDNS/IPv4" : "",
flags & SD_RESOLVED_MDNS_IPV6 ? " mDNS/IPv6" : "");
assert_se(format_timespan(rtt_str, sizeof(rtt_str), rtt, 100));
printf(" in %s.%s\n"
"%s-- Data is authenticated: %s%s\n",
rtt_str, ansi_normal(),
ansi_grey(), yes_no(flags & SD_RESOLVED_AUTHENTICATED), ansi_normal());
}
static void print_ifindex_comment(int printed_so_far, int ifindex) {
char ifname[IF_NAMESIZE + 1];
if (ifindex <= 0)
return;
if (!format_ifname(ifindex, ifname))
log_warning_errno(errno, "Failed to resolve interface name for index %i, ignoring: %m", ifindex);
else
printf("%*s%s-- link: %s%s",
60 > printed_so_far ? 60 - printed_so_far : 0, " ", /* Align comment to the 60th column */
ansi_grey(), ifname, ansi_normal());
}
static int resolve_host(sd_bus *bus, const char *name) {
_cleanup_(sd_bus_message_unrefp) sd_bus_message *req = NULL, *reply = NULL;
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
const char *canonical = NULL;
unsigned c = 0;
uint64_t flags;
usec_t ts;
int r;
assert(name);
log_debug("Resolving %s (family %s, interface %s).", name, af_to_name(arg_family) ?: "*", isempty(arg_ifname) ? "*" : arg_ifname);
r = bus_message_new_method_call(bus, &req, bus_resolve_mgr, "ResolveHostname");
if (r < 0)
return bus_log_create_error(r);
r = sd_bus_message_append(req, "isit", arg_ifindex, name, arg_family, arg_flags);
if (r < 0)
return bus_log_create_error(r);
ts = now(CLOCK_MONOTONIC);
r = sd_bus_call(bus, req, SD_RESOLVED_QUERY_TIMEOUT_USEC, &error, &reply);
if (r < 0)
return log_error_errno(r, "%s: resolve call failed: %s", name, bus_error_message(&error, r));
ts = now(CLOCK_MONOTONIC) - ts;
r = sd_bus_message_enter_container(reply, 'a', "(iiay)");
if (r < 0)
return bus_log_parse_error(r);
while ((r = sd_bus_message_enter_container(reply, 'r', "iiay")) > 0) {
_cleanup_free_ char *pretty = NULL;
int ifindex, family, k;
const void *a;
size_t sz;
assert_cc(sizeof(int) == sizeof(int32_t));
r = sd_bus_message_read(reply, "ii", &ifindex, &family);
if (r < 0)
return bus_log_parse_error(r);
r = sd_bus_message_read_array(reply, 'y', &a, &sz);
if (r < 0)
return bus_log_parse_error(r);
r = sd_bus_message_exit_container(reply);
if (r < 0)
return bus_log_parse_error(r);
if (!IN_SET(family, AF_INET, AF_INET6)) {
log_debug("%s: skipping entry with family %d (%s)", name, family, af_to_name(family) ?: "unknown");
continue;
}
if (sz != FAMILY_ADDRESS_SIZE(family)) {
log_error("%s: systemd-resolved returned address of invalid size %zu for family %s", name, sz, af_to_name(family) ?: "unknown");
return -EINVAL;
}
r = in_addr_ifindex_to_string(family, a, ifindex, &pretty);
if (r < 0)
return log_error_errno(r, "Failed to print address for %s: %m", name);
k = printf("%*s%s %s%s%s",
(int) strlen(name), c == 0 ? name : "", c == 0 ? ":" : " ",
ansi_highlight(), pretty, ansi_normal());
print_ifindex_comment(k, ifindex);
fputc('\n', stdout);
c++;
}
if (r < 0)
return bus_log_parse_error(r);
r = sd_bus_message_exit_container(reply);
if (r < 0)
return bus_log_parse_error(r);
r = sd_bus_message_read(reply, "st", &canonical, &flags);
if (r < 0)
return bus_log_parse_error(r);
if (!streq(name, canonical))
printf("%*s%s (%s)\n",
(int) strlen(name), c == 0 ? name : "", c == 0 ? ":" : " ",
canonical);
if (c == 0) {
log_error("%s: no addresses found", name);
return -ESRCH;
}
print_source(flags, ts);
return 0;
}
static int resolve_address(sd_bus *bus, int family, const union in_addr_union *address, int ifindex) {
_cleanup_(sd_bus_message_unrefp) sd_bus_message *req = NULL, *reply = NULL;
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_free_ char *pretty = NULL;
uint64_t flags;
unsigned c = 0;
usec_t ts;
int r;
assert(bus);
assert(IN_SET(family, AF_INET, AF_INET6));
assert(address);
if (ifindex <= 0)
ifindex = arg_ifindex;
r = in_addr_ifindex_to_string(family, address, ifindex, &pretty);
if (r < 0)
return log_oom();
log_debug("Resolving %s.", pretty);
r = bus_message_new_method_call(bus, &req, bus_resolve_mgr, "ResolveAddress");
if (r < 0)
return bus_log_create_error(r);
r = sd_bus_message_append(req, "ii", ifindex, family);
if (r < 0)
return bus_log_create_error(r);
r = sd_bus_message_append_array(req, 'y', address, FAMILY_ADDRESS_SIZE(family));
if (r < 0)
return bus_log_create_error(r);
r = sd_bus_message_append(req, "t", arg_flags);
if (r < 0)
return bus_log_create_error(r);
ts = now(CLOCK_MONOTONIC);
r = sd_bus_call(bus, req, SD_RESOLVED_QUERY_TIMEOUT_USEC, &error, &reply);
if (r < 0)
return log_error_errno(r, "%s: resolve call failed: %s", pretty, bus_error_message(&error, r));
ts = now(CLOCK_MONOTONIC) - ts;
r = sd_bus_message_enter_container(reply, 'a', "(is)");
if (r < 0)
return bus_log_create_error(r);
while ((r = sd_bus_message_enter_container(reply, 'r', "is")) > 0) {
const char *n;
int k;
assert_cc(sizeof(int) == sizeof(int32_t));
r = sd_bus_message_read(reply, "is", &ifindex, &n);
if (r < 0)
return r;
r = sd_bus_message_exit_container(reply);
if (r < 0)
return r;
k = printf("%*s%s %s%s%s",
(int) strlen(pretty), c == 0 ? pretty : "",
c == 0 ? ":" : " ",
ansi_highlight(), n, ansi_normal());
print_ifindex_comment(k, ifindex);
fputc('\n', stdout);
c++;
}
if (r < 0)
return bus_log_parse_error(r);
r = sd_bus_message_exit_container(reply);
if (r < 0)
return bus_log_parse_error(r);
r = sd_bus_message_read(reply, "t", &flags);
if (r < 0)
return bus_log_parse_error(r);
if (c == 0) {
log_error("%s: no names found", pretty);
return -ESRCH;
}
print_source(flags, ts);
return 0;
}
static int output_rr_packet(const void *d, size_t l, int ifindex) {
_cleanup_(dns_resource_record_unrefp) DnsResourceRecord *rr = NULL;
_cleanup_(dns_packet_unrefp) DnsPacket *p = NULL;
int r;
r = dns_packet_new(&p, DNS_PROTOCOL_DNS, 0, DNS_PACKET_SIZE_MAX);
if (r < 0)
return log_oom();
p->refuse_compression = true;
r = dns_packet_append_blob(p, d, l, NULL);
if (r < 0)
return log_oom();
r = dns_packet_read_rr(p, &rr, NULL, NULL);
if (r < 0)
return log_error_errno(r, "Failed to parse RR: %m");
if (arg_raw == RAW_PAYLOAD) {
void *data;
ssize_t k;
k = dns_resource_record_payload(rr, &data);
if (k < 0)
return log_error_errno(k, "Cannot dump RR: %m");
fwrite(data, 1, k, stdout);
} else {
const char *s;
int k;
s = dns_resource_record_to_string(rr);
if (!s)
return log_oom();
k = printf("%s", s);
print_ifindex_comment(k, ifindex);
fputc('\n', stdout);
}
return 0;
}
static int resolve_record(sd_bus *bus, const char *name, uint16_t class, uint16_t type, bool warn_missing) {
_cleanup_(sd_bus_message_unrefp) sd_bus_message *req = NULL, *reply = NULL;
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
unsigned n = 0;
uint64_t flags;
int r;
usec_t ts;
bool needs_authentication = false;
assert(name);
log_debug("Resolving %s %s %s (interface %s).", name, dns_class_to_string(class), dns_type_to_string(type), isempty(arg_ifname) ? "*" : arg_ifname);
r = bus_message_new_method_call(bus, &req, bus_resolve_mgr, "ResolveRecord");
if (r < 0)
return bus_log_create_error(r);
r = sd_bus_message_append(req, "isqqt", arg_ifindex, name, class, type, arg_flags);
if (r < 0)
return bus_log_create_error(r);
ts = now(CLOCK_MONOTONIC);
r = sd_bus_call(bus, req, SD_RESOLVED_QUERY_TIMEOUT_USEC, &error, &reply);
if (r < 0) {
if (warn_missing || r != -ENXIO)
log_error("%s: resolve call failed: %s", name, bus_error_message(&error, r));
return r;
}
ts = now(CLOCK_MONOTONIC) - ts;
r = sd_bus_message_enter_container(reply, 'a', "(iqqay)");
if (r < 0)
return bus_log_parse_error(r);
while ((r = sd_bus_message_enter_container(reply, 'r', "iqqay")) > 0) {
uint16_t c, t;
int ifindex;
const void *d;
size_t l;
assert_cc(sizeof(int) == sizeof(int32_t));
r = sd_bus_message_read(reply, "iqq", &ifindex, &c, &t);
if (r < 0)
return bus_log_parse_error(r);
r = sd_bus_message_read_array(reply, 'y', &d, &l);
if (r < 0)
return bus_log_parse_error(r);
r = sd_bus_message_exit_container(reply);
if (r < 0)
return bus_log_parse_error(r);
if (arg_raw == RAW_PACKET) {
uint64_t u64 = htole64(l);
fwrite(&u64, sizeof(u64), 1, stdout);
fwrite(d, 1, l, stdout);
} else {
r = output_rr_packet(d, l, ifindex);
if (r < 0)
return r;
}
if (dns_type_needs_authentication(t))
needs_authentication = true;
n++;
}
if (r < 0)
return bus_log_parse_error(r);
r = sd_bus_message_exit_container(reply);
if (r < 0)
return bus_log_parse_error(r);
r = sd_bus_message_read(reply, "t", &flags);
if (r < 0)
return bus_log_parse_error(r);
if (n == 0) {
if (warn_missing)
log_error("%s: no records found", name);
return -ESRCH;
}
print_source(flags, ts);
if ((flags & SD_RESOLVED_AUTHENTICATED) == 0 && needs_authentication) {
fflush(stdout);
fprintf(stderr, "\n%s"
"WARNING: The resources shown contain cryptographic key data which could not be\n"
" authenticated. It is not suitable to authenticate any communication.\n"
" This is usually indication that DNSSEC authentication was not enabled\n"
" or is not available for the selected protocol or DNS servers.%s\n",
ansi_highlight_red(),
ansi_normal());
}
return 0;
}
static int resolve_rfc4501(sd_bus *bus, const char *name) {
uint16_t type = 0, class = 0;
const char *p, *q, *n;
int r;
assert(bus);
assert(name);
assert(startswith(name, "dns:"));
/* Parse RFC 4501 dns: URIs */
p = name + 4;
if (p[0] == '/') {
const char *e;
if (p[1] != '/')
goto invalid;
e = strchr(p + 2, '/');
if (!e)
goto invalid;
if (e != p + 2)
log_warning("DNS authority specification not supported; ignoring specified authority.");
p = e + 1;
}
q = strchr(p, '?');
if (q) {
n = strndupa(p, q - p);
q++;
for (;;) {
const char *f;
f = startswith_no_case(q, "class=");
if (f) {
_cleanup_free_ char *t = NULL;
const char *e;
if (class != 0)
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
"DNS class specified twice.");
e = strchrnul(f, ';');
t = strndup(f, e - f);
if (!t)
return log_oom();
r = dns_class_from_string(t);
if (r < 0)
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
"Unknown DNS class %s.", t);
class = r;
if (*e == ';') {
q = e + 1;
continue;
}
break;
}
f = startswith_no_case(q, "type=");
if (f) {
_cleanup_free_ char *t = NULL;
const char *e;
if (type != 0)
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
"DNS type specified twice.");
e = strchrnul(f, ';');
t = strndup(f, e - f);
if (!t)
return log_oom();
r = dns_type_from_string(t);
if (r < 0)
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
"Unknown DNS type %s.", t);
type = r;
if (*e == ';') {
q = e + 1;
continue;
}
break;
}
goto invalid;
}
} else
n = p;
if (class == 0)
class = arg_class ?: DNS_CLASS_IN;
if (type == 0)
type = arg_type ?: DNS_TYPE_A;
return resolve_record(bus, n, class, type, true);
invalid:
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
"Invalid DNS URI: %s", name);
}
static int verb_query(int argc, char **argv, void *userdata) {
sd_bus *bus = userdata;
char **p;
int q, r = 0;
if (arg_type != 0)
STRV_FOREACH(p, argv + 1) {
q = resolve_record(bus, *p, arg_class, arg_type, true);
if (q < 0)
r = q;
}
else
STRV_FOREACH(p, argv + 1) {
if (startswith(*p, "dns:"))
q = resolve_rfc4501(bus, *p);
else {
int family, ifindex;
union in_addr_union a;
q = in_addr_ifindex_from_string_auto(*p, &family, &a, &ifindex);
if (q >= 0)
q = resolve_address(bus, family, &a, ifindex);
else
q = resolve_host(bus, *p);
}
if (q < 0)
r = q;
}
return r;
}
static int resolve_service(sd_bus *bus, const char *name, const char *type, const char *domain) {
const char *canonical_name, *canonical_type, *canonical_domain;
_cleanup_(sd_bus_message_unrefp) sd_bus_message *req = NULL, *reply = NULL;
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
size_t indent, sz;
uint64_t flags;
const char *p;
unsigned c;
usec_t ts;
int r;
assert(bus);
assert(domain);
name = empty_to_null(name);
type = empty_to_null(type);
if (name)
log_debug("Resolving service \"%s\" of type %s in %s (family %s, interface %s).", name, type, domain, af_to_name(arg_family) ?: "*", isempty(arg_ifname) ? "*" : arg_ifname);
else if (type)
log_debug("Resolving service type %s of %s (family %s, interface %s).", type, domain, af_to_name(arg_family) ?: "*", isempty(arg_ifname) ? "*" : arg_ifname);
else
log_debug("Resolving service type %s (family %s, interface %s).", domain, af_to_name(arg_family) ?: "*", isempty(arg_ifname) ? "*" : arg_ifname);
r = bus_message_new_method_call(bus, &req, bus_resolve_mgr, "ResolveService");
if (r < 0)
return bus_log_create_error(r);
r = sd_bus_message_append(req, "isssit", arg_ifindex, name, type, domain, arg_family, arg_flags);
if (r < 0)
return bus_log_create_error(r);
ts = now(CLOCK_MONOTONIC);
r = sd_bus_call(bus, req, SD_RESOLVED_QUERY_TIMEOUT_USEC, &error, &reply);
if (r < 0)
return log_error_errno(r, "Resolve call failed: %s", bus_error_message(&error, r));
ts = now(CLOCK_MONOTONIC) - ts;
r = sd_bus_message_enter_container(reply, 'a', "(qqqsa(iiay)s)");
if (r < 0)
return bus_log_parse_error(r);
indent =
(name ? strlen(name) + 1 : 0) +
(type ? strlen(type) + 1 : 0) +
strlen(domain) + 2;
c = 0;
while ((r = sd_bus_message_enter_container(reply, 'r', "qqqsa(iiay)s")) > 0) {
uint16_t priority, weight, port;
const char *hostname, *canonical;
r = sd_bus_message_read(reply, "qqqs", &priority, &weight, &port, &hostname);
if (r < 0)
return bus_log_parse_error(r);
if (name)
printf("%*s%s", (int) strlen(name), c == 0 ? name : "", c == 0 ? "/" : " ");
if (type)
printf("%*s%s", (int) strlen(type), c == 0 ? type : "", c == 0 ? "/" : " ");
printf("%*s%s %s:%u [priority=%u, weight=%u]\n",
(int) strlen(domain), c == 0 ? domain : "",
c == 0 ? ":" : " ",
hostname, port,
priority, weight);
r = sd_bus_message_enter_container(reply, 'a', "(iiay)");
if (r < 0)
return bus_log_parse_error(r);
while ((r = sd_bus_message_enter_container(reply, 'r', "iiay")) > 0) {
_cleanup_free_ char *pretty = NULL;
int ifindex, family, k;
const void *a;
assert_cc(sizeof(int) == sizeof(int32_t));
r = sd_bus_message_read(reply, "ii", &ifindex, &family);
if (r < 0)
return bus_log_parse_error(r);
r = sd_bus_message_read_array(reply, 'y', &a, &sz);
if (r < 0)
return bus_log_parse_error(r);
r = sd_bus_message_exit_container(reply);
if (r < 0)
return bus_log_parse_error(r);
if (!IN_SET(family, AF_INET, AF_INET6)) {
log_debug("%s: skipping entry with family %d (%s)", name, family, af_to_name(family) ?: "unknown");
continue;
}
if (sz != FAMILY_ADDRESS_SIZE(family)) {
log_error("%s: systemd-resolved returned address of invalid size %zu for family %s", name, sz, af_to_name(family) ?: "unknown");
return -EINVAL;
}
r = in_addr_ifindex_to_string(family, a, ifindex, &pretty);
if (r < 0)
return log_error_errno(r, "Failed to print address for %s: %m", name);
k = printf("%*s%s", (int) indent, "", pretty);
print_ifindex_comment(k, ifindex);
fputc('\n', stdout);
}
if (r < 0)
return bus_log_parse_error(r);
r = sd_bus_message_exit_container(reply);
if (r < 0)
return bus_log_parse_error(r);
r = sd_bus_message_read(reply, "s", &canonical);
if (r < 0)
return bus_log_parse_error(r);
if (!streq(hostname, canonical))
printf("%*s(%s)\n", (int) indent, "", canonical);
r = sd_bus_message_exit_container(reply);
if (r < 0)
return bus_log_parse_error(r);
c++;
}
if (r < 0)
return bus_log_parse_error(r);
r = sd_bus_message_exit_container(reply);
if (r < 0)
return bus_log_parse_error(r);
r = sd_bus_message_enter_container(reply, 'a', "ay");
if (r < 0)
return bus_log_parse_error(r);
while ((r = sd_bus_message_read_array(reply, 'y', (const void**) &p, &sz)) > 0) {
_cleanup_free_ char *escaped = NULL;
escaped = cescape_length(p, sz);
if (!escaped)
return log_oom();
printf("%*s%s\n", (int) indent, "", escaped);
}
if (r < 0)
return bus_log_parse_error(r);
r = sd_bus_message_exit_container(reply);
if (r < 0)
return bus_log_parse_error(r);
r = sd_bus_message_read(reply, "ssst", &canonical_name, &canonical_type, &canonical_domain, &flags);
if (r < 0)
return bus_log_parse_error(r);
canonical_name = empty_to_null(canonical_name);
canonical_type = empty_to_null(canonical_type);
if (!streq_ptr(name, canonical_name) ||
!streq_ptr(type, canonical_type) ||
!streq_ptr(domain, canonical_domain)) {
printf("%*s(", (int) indent, "");
if (canonical_name)
printf("%s/", canonical_name);
if (canonical_type)
printf("%s/", canonical_type);
printf("%s)\n", canonical_domain);
}
print_source(flags, ts);
return 0;
}
static int verb_service(int argc, char **argv, void *userdata) {
sd_bus *bus = userdata;
if (argc == 2)
return resolve_service(bus, NULL, NULL, argv[1]);
else if (argc == 3)
return resolve_service(bus, NULL, argv[1], argv[2]);
else
return resolve_service(bus, argv[1], argv[2], argv[3]);
}
static int resolve_openpgp(sd_bus *bus, const char *address) {
const char *domain, *full;
int r;
_cleanup_free_ char *hashed = NULL;
assert(bus);
assert(address);
domain = strrchr(address, '@');
if (!domain)
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
"Address does not contain '@': \"%s\"", address);
if (domain == address || domain[1] == '\0')
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
"Address starts or ends with '@': \"%s\"", address);
domain++;
r = string_hashsum_sha256(address, domain - 1 - address, &hashed);
if (r < 0)
return log_error_errno(r, "Hashing failed: %m");
strshorten(hashed, 56);
full = strjoina(hashed, "._openpgpkey.", domain);
log_debug("Looking up \"%s\".", full);
r = resolve_record(bus, full,
arg_class ?: DNS_CLASS_IN,
arg_type ?: DNS_TYPE_OPENPGPKEY, false);
if (IN_SET(r, -ENXIO, -ESRCH)) { /* NXDOMAIN or NODATA? */
hashed = mfree(hashed);
r = string_hashsum_sha224(address, domain - 1 - address, &hashed);
if (r < 0)
return log_error_errno(r, "Hashing failed: %m");
full = strjoina(hashed, "._openpgpkey.", domain);
log_debug("Looking up \"%s\".", full);
return resolve_record(bus, full,
arg_class ?: DNS_CLASS_IN,
arg_type ?: DNS_TYPE_OPENPGPKEY, true);
}
return r;
}
static int verb_openpgp(int argc, char **argv, void *userdata) {
sd_bus *bus = userdata;
char **p;
int q, r = 0;
STRV_FOREACH(p, argv + 1) {
q = resolve_openpgp(bus, *p);
if (q < 0)
r = q;
}
return r;
}
static int resolve_tlsa(sd_bus *bus, const char *family, const char *address) {
const char *port;
uint16_t port_num = 443;
_cleanup_free_ char *full = NULL;
int r;
assert(bus);
assert(address);
port = strrchr(address, ':');
if (port) {
r = parse_ip_port(port + 1, &port_num);
if (r < 0)
return log_error_errno(r, "Invalid port \"%s\".", port + 1);
address = strndupa(address, port - address);
}
r = asprintf(&full, "_%u._%s.%s",
port_num,
family,
address);
if (r < 0)
return log_oom();
log_debug("Looking up \"%s\".", full);
return resolve_record(bus, full,
arg_class ?: DNS_CLASS_IN,
arg_type ?: DNS_TYPE_TLSA, true);
}
static bool service_family_is_valid(const char *s) {
return STR_IN_SET(s, "tcp", "udp", "sctp");
}
static int verb_tlsa(int argc, char **argv, void *userdata) {
sd_bus *bus = userdata;
char **p, **args = argv + 1;
const char *family = "tcp";
int q, r = 0;
if (service_family_is_valid(argv[1])) {
family = argv[1];
args++;
}
STRV_FOREACH(p, args) {
q = resolve_tlsa(bus, family, *p);
if (q < 0)
r = q;
}
return r;
}
static int show_statistics(int argc, char **argv, void *userdata) {
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
_cleanup_(table_unrefp) Table *table = NULL;
sd_bus *bus = userdata;
uint64_t n_current_transactions, n_total_transactions,
cache_size, n_cache_hit, n_cache_miss,
n_dnssec_secure, n_dnssec_insecure, n_dnssec_bogus, n_dnssec_indeterminate;
int r, dnssec_supported;
assert(bus);
r = bus_get_property_trivial(bus, bus_resolve_mgr, "DNSSECSupported", &error, 'b', &dnssec_supported);
if (r < 0)
return log_error_errno(r, "Failed to get DNSSEC supported state: %s", bus_error_message(&error, r));
printf("DNSSEC supported by current servers: %s%s%s\n\n",
ansi_highlight(),
yes_no(dnssec_supported),
ansi_normal());
r = bus_get_property(bus, bus_resolve_mgr, "TransactionStatistics", &error, &reply, "(tt)");
if (r < 0)
return log_error_errno(r, "Failed to get transaction statistics: %s", bus_error_message(&error, r));
r = sd_bus_message_read(reply, "(tt)",
&n_current_transactions,
&n_total_transactions);
if (r < 0)
return bus_log_parse_error(r);
reply = sd_bus_message_unref(reply);
r = bus_get_property(bus, bus_resolve_mgr, "CacheStatistics", &error, &reply, "(ttt)");
if (r < 0)
return log_error_errno(r, "Failed to get cache statistics: %s", bus_error_message(&error, r));
r = sd_bus_message_read(reply, "(ttt)",
&cache_size,
&n_cache_hit,
&n_cache_miss);
if (r < 0)
return bus_log_parse_error(r);
reply = sd_bus_message_unref(reply);
r = bus_get_property(bus, bus_resolve_mgr, "DNSSECStatistics", &error, &reply, "(tttt)");
if (r < 0)
return log_error_errno(r, "Failed to get DNSSEC statistics: %s", bus_error_message(&error, r));
r = sd_bus_message_read(reply, "(tttt)",
&n_dnssec_secure,
&n_dnssec_insecure,
&n_dnssec_bogus,
&n_dnssec_indeterminate);
if (r < 0)
return bus_log_parse_error(r);
table = table_new("key", "value");
if (!table)
return log_oom();
table_set_header(table, false);
r = table_add_many(table,
TABLE_STRING, "Transactions",
TABLE_SET_COLOR, ansi_highlight(),
TABLE_EMPTY,
TABLE_STRING, "Current Transactions:",
TABLE_SET_ALIGN_PERCENT, 100,
TABLE_UINT64, n_current_transactions,
TABLE_STRING, "Total Transactions:",
TABLE_UINT64, n_total_transactions,
TABLE_EMPTY, TABLE_EMPTY,
TABLE_STRING, "Cache",
TABLE_SET_COLOR, ansi_highlight(),
TABLE_SET_ALIGN_PERCENT, 0,
TABLE_EMPTY,
TABLE_STRING, "Current Cache Size:",
TABLE_SET_ALIGN_PERCENT, 100,
TABLE_UINT64, cache_size,
TABLE_STRING, "Cache Hits:",
TABLE_UINT64, n_cache_hit,
TABLE_STRING, "Cache Misses:",
TABLE_UINT64, n_cache_miss,
TABLE_EMPTY, TABLE_EMPTY,
TABLE_STRING, "DNSSEC Verdicts",
TABLE_SET_COLOR, ansi_highlight(),
TABLE_SET_ALIGN_PERCENT, 0,
TABLE_EMPTY,
TABLE_STRING, "Secure:",
TABLE_SET_ALIGN_PERCENT, 100,
TABLE_UINT64, n_dnssec_secure,
TABLE_STRING, "Insecure:",
TABLE_UINT64, n_dnssec_insecure,
TABLE_STRING, "Bogus:",
TABLE_UINT64, n_dnssec_bogus,
TABLE_STRING, "Indeterminate:",
TABLE_UINT64, n_dnssec_indeterminate);
if (r < 0)
table_log_add_error(r);
r = table_print(table, NULL);
if (r < 0)
return table_log_print_error(r);
return 0;
}
static int reset_statistics(int argc, char **argv, void *userdata) {
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
sd_bus *bus = userdata;
int r;
r = bus_call_method(bus, bus_resolve_mgr, "ResetStatistics", &error, NULL, NULL);
if (r < 0)
return log_error_errno(r, "Failed to reset statistics: %s", bus_error_message(&error, r));
return 0;
}
static int flush_caches(int argc, char **argv, void *userdata) {
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
sd_bus *bus = userdata;
int r;
r = bus_call_method(bus, bus_resolve_mgr, "FlushCaches", &error, NULL, NULL);
if (r < 0)
return log_error_errno(r, "Failed to flush caches: %s", bus_error_message(&error, r));
return 0;
}
static int reset_server_features(int argc, char **argv, void *userdata) {
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
sd_bus *bus = userdata;
int r;
r = bus_call_method(bus, bus_resolve_mgr, "ResetServerFeatures", &error, NULL, NULL);
if (r < 0)
return log_error_errno(r, "Failed to reset server features: %s", bus_error_message(&error, r));
return 0;
}
static int read_dns_server_one(sd_bus_message *m, bool with_ifindex, char **ret) {
_cleanup_free_ char *pretty = NULL;
int ifindex, family, r;
const void *a;
size_t sz;
assert(m);
assert(ret);
r = sd_bus_message_enter_container(m, 'r', with_ifindex ? "iiay" : "iay");
if (r <= 0)
return r;
if (with_ifindex) {
r = sd_bus_message_read(m, "i", &ifindex);
if (r < 0)
return r;
}
r = sd_bus_message_read(m, "i", &family);
if (r < 0)
return r;
r = sd_bus_message_read_array(m, 'y', &a, &sz);
if (r < 0)
return r;
r = sd_bus_message_exit_container(m);
if (r < 0)
return r;
if (with_ifindex && ifindex != 0) {
/* only show the global ones here */
*ret = NULL;
return 1;
}
if (!IN_SET(family, AF_INET, AF_INET6)) {
log_debug("Unexpected family, ignoring: %i", family);
*ret = NULL;
return 1;
}
if (sz != FAMILY_ADDRESS_SIZE(family)) {
log_debug("Address size mismatch, ignoring.");
*ret = NULL;
return 1;
}
r = in_addr_to_string(family, a, &pretty);
if (r < 0)
return r;
*ret = TAKE_PTR(pretty);
return 1;
}
static int map_link_dns_servers(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) {
char ***l = userdata;
int r;
assert(bus);
assert(member);
assert(m);
assert(l);
r = sd_bus_message_enter_container(m, 'a', "(iay)");
if (r < 0)
return r;
for (;;) {
_cleanup_free_ char *pretty = NULL;
r = read_dns_server_one(m, false, &pretty);
if (r < 0)
return r;
if (r == 0)
break;
if (isempty(pretty))
continue;
r = strv_consume(l, TAKE_PTR(pretty));
if (r < 0)
return r;
}
r = sd_bus_message_exit_container(m);
if (r < 0)
return r;
return 0;
}
static int map_link_current_dns_server(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) {
assert(m);
assert(userdata);
return read_dns_server_one(m, false, userdata);
}
static int read_domain_one(sd_bus_message *m, bool with_ifindex, char **ret) {
_cleanup_free_ char *str = NULL;
int ifindex, route_only, r;
const char *domain;
assert(m);
assert(ret);
if (with_ifindex)
r = sd_bus_message_read(m, "(isb)", &ifindex, &domain, &route_only);
else
r = sd_bus_message_read(m, "(sb)", &domain, &route_only);
if (r <= 0)
return r;
if (with_ifindex && ifindex != 0) {
/* only show the global ones here */
*ret = NULL;
return 1;
}
if (route_only)
str = strjoin("~", domain);
else
str = strdup(domain);
if (!str)
return -ENOMEM;
*ret = TAKE_PTR(str);
return 1;
}
static int map_link_domains(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) {
char ***l = userdata;
int r;
assert(bus);
assert(member);
assert(m);
assert(l);
r = sd_bus_message_enter_container(m, 'a', "(sb)");
if (r < 0)
return r;
for (;;) {
_cleanup_free_ char *pretty = NULL;
r = read_domain_one(m, false, &pretty);
if (r < 0)
return r;
if (r == 0)
break;
if (isempty(pretty))
continue;
r = strv_consume(l, TAKE_PTR(pretty));
if (r < 0)
return r;
}
r = sd_bus_message_exit_container(m);
if (r < 0)
return r;
return 0;
}
static int status_print_strv_ifindex(int ifindex, const char *ifname, char **p) {
char **i;
printf("%sLink %i (%s)%s:",
ansi_highlight(), ifindex, ifname, ansi_normal());
STRV_FOREACH(i, p)
printf(" %s", *i);
printf("\n");
return 0;
}
struct link_info {
uint64_t scopes_mask;
const char *llmnr;
const char *mdns;
const char *dns_over_tls;
const char *dnssec;
char *current_dns;
char **dns;
char **domains;
char **ntas;
bool dnssec_supported;
bool default_route;
};
static void link_info_clear(struct link_info *p) {
free(p->current_dns);
strv_free(p->dns);
strv_free(p->domains);
strv_free(p->ntas);
}
static int dump_list(Table *table, const char *prefix, char * const *l) {
int r;
if (strv_isempty(l))
return 0;
r = table_add_many(table,
TABLE_STRING, prefix,
TABLE_STRV, l);
if (r < 0)
return table_log_add_error(r);
return 0;
}
static int status_ifindex(sd_bus *bus, int ifindex, const char *name, StatusMode mode, bool *empty_line) {
static const struct bus_properties_map property_map[] = {
{ "ScopesMask", "t", NULL, offsetof(struct link_info, scopes_mask) },
{ "DNS", "a(iay)", map_link_dns_servers, offsetof(struct link_info, dns) },
{ "CurrentDNSServer", "(iay)", map_link_current_dns_server, offsetof(struct link_info, current_dns) },
{ "Domains", "a(sb)", map_link_domains, offsetof(struct link_info, domains) },
{ "DefaultRoute", "b", NULL, offsetof(struct link_info, default_route) },
{ "LLMNR", "s", NULL, offsetof(struct link_info, llmnr) },
{ "MulticastDNS", "s", NULL, offsetof(struct link_info, mdns) },
{ "DNSOverTLS", "s", NULL, offsetof(struct link_info, dns_over_tls) },
{ "DNSSEC", "s", NULL, offsetof(struct link_info, dnssec) },
{ "DNSSECNegativeTrustAnchors", "as", NULL, offsetof(struct link_info, ntas) },
{ "DNSSECSupported", "b", NULL, offsetof(struct link_info, dnssec_supported) },
{}
};
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
_cleanup_(link_info_clear) struct link_info link_info = {};
_cleanup_(table_unrefp) Table *table = NULL;
_cleanup_free_ char *p = NULL;
char ifi[DECIMAL_STR_MAX(int)], ifname[IF_NAMESIZE + 1] = "";
int r;
assert(bus);
assert(ifindex > 0);
if (!name) {
if (!format_ifname(ifindex, ifname))
return log_error_errno(errno, "Failed to resolve interface name for %i: %m", ifindex);
name = ifname;
}
xsprintf(ifi, "%i", ifindex);
r = sd_bus_path_encode("/org/freedesktop/resolve1/link", ifi, &p);
if (r < 0)
return log_oom();
r = bus_map_all_properties(bus,
"org.freedesktop.resolve1",
p,
property_map,
BUS_MAP_BOOLEAN_AS_BOOL,
&error,
&m,
&link_info);
if (r < 0)
return log_error_errno(r, "Failed to get link data for %i: %s", ifindex, bus_error_message(&error, r));
(void) pager_open(arg_pager_flags);
if (mode == STATUS_DNS)
return status_print_strv_ifindex(ifindex, name, link_info.dns);
if (mode == STATUS_DOMAIN)
return status_print_strv_ifindex(ifindex, name, link_info.domains);
if (mode == STATUS_NTA)
return status_print_strv_ifindex(ifindex, name, link_info.ntas);
if (mode == STATUS_DEFAULT_ROUTE) {
printf("%sLink %i (%s)%s: %s\n",
ansi_highlight(), ifindex, name, ansi_normal(),
yes_no(link_info.default_route));
return 0;
}
if (mode == STATUS_LLMNR) {
printf("%sLink %i (%s)%s: %s\n",
ansi_highlight(), ifindex, name, ansi_normal(),
strna(link_info.llmnr));
return 0;
}
if (mode == STATUS_MDNS) {
printf("%sLink %i (%s)%s: %s\n",
ansi_highlight(), ifindex, name, ansi_normal(),
strna(link_info.mdns));
return 0;
}
if (mode == STATUS_PRIVATE) {
printf("%sLink %i (%s)%s: %s\n",
ansi_highlight(), ifindex, name, ansi_normal(),
strna(link_info.dns_over_tls));
return 0;
}
if (mode == STATUS_DNSSEC) {
printf("%sLink %i (%s)%s: %s\n",
ansi_highlight(), ifindex, name, ansi_normal(),
strna(link_info.dnssec));
return 0;
}
if (empty_line && *empty_line)
fputc('\n', stdout);
printf("%sLink %i (%s)%s\n",
ansi_highlight(), ifindex, name, ansi_normal());
table = table_new("key", "value");
if (!table)
return log_oom();
table_set_header(table, false);
r = table_add_many(table,
TABLE_STRING, "Current Scopes:",
TABLE_SET_ALIGN_PERCENT, 100);
if (r < 0)
return table_log_add_error(r);
if (link_info.scopes_mask == 0)
r = table_add_cell(table, NULL, TABLE_STRING, "none");
else {
_cleanup_free_ char *buf = NULL;
size_t len;
if (asprintf(&buf, "%s%s%s%s%s",
link_info.scopes_mask & SD_RESOLVED_DNS ? "DNS " : "",
link_info.scopes_mask & SD_RESOLVED_LLMNR_IPV4 ? "LLMNR/IPv4 " : "",
link_info.scopes_mask & SD_RESOLVED_LLMNR_IPV6 ? "LLMNR/IPv6 " : "",
link_info.scopes_mask & SD_RESOLVED_MDNS_IPV4 ? "mDNS/IPv4 " : "",
link_info.scopes_mask & SD_RESOLVED_MDNS_IPV6 ? "mDNS/IPv6 " : "") < 0)
return log_oom();
len = strlen(buf);
assert(len > 0);
buf[len - 1] = '\0';
r = table_add_cell(table, NULL, TABLE_STRING, buf);
}
if (r < 0)
return table_log_add_error(r);
r = table_add_many(table,
TABLE_STRING, "DefaultRoute setting:",
TABLE_BOOLEAN, link_info.default_route,
TABLE_STRING, "LLMNR setting:",
TABLE_STRING, strna(link_info.llmnr),
TABLE_STRING, "MulticastDNS setting:",
TABLE_STRING, strna(link_info.mdns),
TABLE_STRING, "DNSOverTLS setting:",
TABLE_STRING, strna(link_info.dns_over_tls),
TABLE_STRING, "DNSSEC setting:",
TABLE_STRING, strna(link_info.dnssec),
TABLE_STRING, "DNSSEC supported:",
TABLE_BOOLEAN, link_info.dnssec_supported);
if (r < 0)
return table_log_add_error(r);
if (link_info.current_dns) {
r = table_add_many(table,
TABLE_STRING, "Current DNS Server:",
TABLE_STRING, link_info.current_dns);
if (r < 0)
return table_log_add_error(r);
}
r = dump_list(table, "DNS Servers:", link_info.dns);
if (r < 0)
return r;
r = dump_list(table, "DNS Domain:", link_info.domains);
if (r < 0)
return r;
r = table_print(table, NULL);
if (r < 0)
return table_log_print_error(r);
if (empty_line)
*empty_line = true;
return 0;
}
static int map_global_dns_servers(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) {
char ***l = userdata;
int r;
assert(bus);
assert(member);
assert(m);
assert(l);
r = sd_bus_message_enter_container(m, 'a', "(iiay)");
if (r < 0)
return r;
for (;;) {
_cleanup_free_ char *pretty = NULL;
r = read_dns_server_one(m, true, &pretty);
if (r < 0)
return r;
if (r == 0)
break;
if (isempty(pretty))
continue;
r = strv_consume(l, TAKE_PTR(pretty));
if (r < 0)
return r;
}
r = sd_bus_message_exit_container(m);
if (r < 0)
return r;
return 0;
}
static int map_global_current_dns_server(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) {
assert(m);
assert(userdata);
return read_dns_server_one(m, true, userdata);
}
static int map_global_domains(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) {
char ***l = userdata;
int r;
assert(bus);
assert(member);
assert(m);
assert(l);
r = sd_bus_message_enter_container(m, 'a', "(isb)");
if (r < 0)
return r;
for (;;) {
_cleanup_free_ char *pretty = NULL;
r = read_domain_one(m, true, &pretty);
if (r < 0)
return r;
if (r == 0)
break;
if (isempty(pretty))
continue;
r = strv_consume(l, TAKE_PTR(pretty));
if (r < 0)
return r;
}
r = sd_bus_message_exit_container(m);
if (r < 0)
return r;
return 0;
}
static int status_print_strv_global(char **p) {
char **i;
printf("%sGlobal%s:", ansi_highlight(), ansi_normal());
STRV_FOREACH(i, p)
printf(" %s", *i);
printf("\n");
return 0;
}
struct global_info {
char *current_dns;
char **dns;
char **fallback_dns;
char **domains;
char **ntas;
const char *llmnr;
const char *mdns;
const char *dns_over_tls;
const char *dnssec;
bool dnssec_supported;
};
static void global_info_clear(struct global_info *p) {
free(p->current_dns);
strv_free(p->dns);
strv_free(p->fallback_dns);
strv_free(p->domains);
strv_free(p->ntas);
}
static int status_global(sd_bus *bus, StatusMode mode, bool *empty_line) {
static const struct bus_properties_map property_map[] = {
{ "DNS", "a(iiay)", map_global_dns_servers, offsetof(struct global_info, dns) },
{ "FallbackDNS", "a(iiay)", map_global_dns_servers, offsetof(struct global_info, fallback_dns) },
{ "CurrentDNSServer", "(iiay)", map_global_current_dns_server, offsetof(struct global_info, current_dns) },
{ "Domains", "a(isb)", map_global_domains, offsetof(struct global_info, domains) },
{ "DNSSECNegativeTrustAnchors", "as", NULL, offsetof(struct global_info, ntas) },
{ "LLMNR", "s", NULL, offsetof(struct global_info, llmnr) },
{ "MulticastDNS", "s", NULL, offsetof(struct global_info, mdns) },
{ "DNSOverTLS", "s", NULL, offsetof(struct global_info, dns_over_tls) },
{ "DNSSEC", "s", NULL, offsetof(struct global_info, dnssec) },
{ "DNSSECSupported", "b", NULL, offsetof(struct global_info, dnssec_supported) },
{}
};
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
_cleanup_(global_info_clear) struct global_info global_info = {};
_cleanup_(table_unrefp) Table *table = NULL;
int r;
assert(bus);
assert(empty_line);
r = bus_map_all_properties(bus,
"org.freedesktop.resolve1",
"/org/freedesktop/resolve1",
property_map,
BUS_MAP_BOOLEAN_AS_BOOL,
&error,
&m,
&global_info);
if (r < 0)
return log_error_errno(r, "Failed to get global data: %s", bus_error_message(&error, r));
(void) pager_open(arg_pager_flags);
if (mode == STATUS_DNS)
return status_print_strv_global(global_info.dns);
if (mode == STATUS_DOMAIN)
return status_print_strv_global(global_info.domains);
if (mode == STATUS_NTA)
return status_print_strv_global(global_info.ntas);
if (mode == STATUS_LLMNR) {
printf("%sGlobal%s: %s\n", ansi_highlight(), ansi_normal(),
strna(global_info.llmnr));
return 0;
}
if (mode == STATUS_MDNS) {
printf("%sGlobal%s: %s\n", ansi_highlight(), ansi_normal(),
strna(global_info.mdns));
return 0;
}
if (mode == STATUS_PRIVATE) {
printf("%sGlobal%s: %s\n", ansi_highlight(), ansi_normal(),
strna(global_info.dns_over_tls));
return 0;
}
if (mode == STATUS_DNSSEC) {
printf("%sGlobal%s: %s\n", ansi_highlight(), ansi_normal(),
strna(global_info.dnssec));
return 0;
}
printf("%sGlobal%s\n", ansi_highlight(), ansi_normal());
table = table_new("key", "value");
if (!table)
return log_oom();
table_set_header(table, false);
r = table_add_many(table,
TABLE_STRING, "LLMNR setting:",
TABLE_SET_ALIGN_PERCENT, 100,
TABLE_STRING, strna(global_info.llmnr),
TABLE_STRING, "MulticastDNS setting:",
TABLE_STRING, strna(global_info.mdns),
TABLE_STRING, "DNSOverTLS setting:",
TABLE_STRING, strna(global_info.dns_over_tls),
TABLE_STRING, "DNSSEC setting:",
TABLE_STRING, strna(global_info.dnssec),
TABLE_STRING, "DNSSEC supported:",
TABLE_BOOLEAN, global_info.dnssec_supported);
if (r < 0)
return table_log_add_error(r);
if (global_info.current_dns) {
r = table_add_many(table,
TABLE_STRING, "Current DNS Server:",
TABLE_STRING, global_info.current_dns);
if (r < 0)
return table_log_add_error(r);
}
r = dump_list(table, "DNS Servers:", global_info.dns);
if (r < 0)
return r;
r = dump_list(table, "Fallback DNS Servers:", global_info.fallback_dns);
if (r < 0)
return r;
r = dump_list(table, "DNS Domain:", global_info.domains);
if (r < 0)
return r;
r = table_print(table, NULL);
if (r < 0)
return table_log_print_error(r);
*empty_line = true;
return 0;
}
static int status_all(sd_bus *bus, StatusMode mode) {
_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL, *reply = NULL;
_cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL;
bool empty_line = false;
int r;
assert(bus);
r = status_global(bus, mode, &empty_line);
if (r < 0)
return r;
r = sd_netlink_open(&rtnl);
if (r < 0)
return log_error_errno(r, "Failed to connect to netlink: %m");
r = sd_rtnl_message_new_link(rtnl, &req, RTM_GETLINK, 0);
if (r < 0)
return rtnl_log_create_error(r);
r = sd_netlink_message_request_dump(req, true);
if (r < 0)
return rtnl_log_create_error(r);
r = sd_netlink_call(rtnl, req, 0, &reply);
if (r < 0)
return log_error_errno(r, "Failed to enumerate links: %m");
_cleanup_free_ InterfaceInfo *infos = NULL;
size_t n_allocated = 0, n_infos = 0;
for (sd_netlink_message *i = reply; i; i = sd_netlink_message_next(i)) {
const char *name;
int ifindex;
uint16_t type;
r = sd_netlink_message_get_type(i, &type);
if (r < 0)
return rtnl_log_parse_error(r);
if (type != RTM_NEWLINK)
continue;
r = sd_rtnl_message_link_get_ifindex(i, &ifindex);
if (r < 0)
return rtnl_log_parse_error(r);
if (ifindex == LOOPBACK_IFINDEX)
continue;
r = sd_netlink_message_read_string(i, IFLA_IFNAME, &name);
if (r < 0)
return rtnl_log_parse_error(r);
if (!GREEDY_REALLOC(infos, n_allocated, n_infos + 1))
return log_oom();
infos[n_infos++] = (InterfaceInfo) { ifindex, name };
}
typesafe_qsort(infos, n_infos, interface_info_compare);
r = 0;
for (size_t i = 0; i < n_infos; i++) {
int q = status_ifindex(bus, infos[i].index, infos[i].name, mode, &empty_line);
if (q < 0 && r >= 0)
r = q;
}
return r;
}
static int verb_status(int argc, char **argv, void *userdata) {
sd_bus *bus = userdata;
_cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL;
int r = 0;
if (argc > 1) {
char **ifname;
bool empty_line = false;
STRV_FOREACH(ifname, argv + 1) {
int ifindex, q;
ifindex = resolve_interface(&rtnl, *ifname);
if (ifindex < 0) {
log_warning_errno(ifindex, "Failed to resolve interface \"%s\", ignoring: %m", *ifname);
continue;
}
q = status_ifindex(bus, ifindex, NULL, STATUS_ALL, &empty_line);
if (q < 0)
r = q;
}
} else
r = status_all(bus, STATUS_ALL);
return r;
}
static int call_dns(sd_bus *bus, char **dns, const BusLocator *locator, sd_bus_error *error) {
_cleanup_(sd_bus_message_unrefp) sd_bus_message *req = NULL;
char **p;
int r;
r = bus_message_new_method_call(bus, &req, locator, "SetLinkDNS");
if (r < 0)
return bus_log_create_error(r);
r = sd_bus_message_append(req, "i", arg_ifindex);
if (r < 0)
return bus_log_create_error(r);
r = sd_bus_message_open_container(req, 'a', "(iay)");
if (r < 0)
return bus_log_create_error(r);
/* If only argument is the empty string, then call SetLinkDNS() with an
* empty list, which will clear the list of domains for an interface. */
if (!strv_equal(dns, STRV_MAKE("")))
STRV_FOREACH(p, dns) {
struct in_addr_data data;
r = in_addr_from_string_auto(*p, &data.family, &data.address);
if (r < 0)
return log_error_errno(r, "Failed to parse DNS server address: %s", *p);
r = sd_bus_message_open_container(req, 'r', "iay");
if (r < 0)
return bus_log_create_error(r);
r = sd_bus_message_append(req, "i", data.family);
if (r < 0)
return bus_log_create_error(r);
r = sd_bus_message_append_array(req, 'y', &data.address, FAMILY_ADDRESS_SIZE(data.family));
if (r < 0)
return bus_log_create_error(r);
r = sd_bus_message_close_container(req);
if (r < 0)
return bus_log_create_error(r);
}
r = sd_bus_message_close_container(req);
if (r < 0)
return bus_log_create_error(r);
return sd_bus_call(bus, req, 0, error, NULL);
}
static int verb_dns(int argc, char **argv, void *userdata) {
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
sd_bus *bus = userdata;
int r;
assert(bus);
if (argc >= 2) {
r = ifname_mangle(argv[1]);
if (r < 0)
return r;
}
if (arg_ifindex <= 0)
return status_all(bus, STATUS_DNS);
if (argc < 3)
return status_ifindex(bus, arg_ifindex, NULL, STATUS_DNS, NULL);
r = call_dns(bus, argv + 2, bus_resolve_mgr, &error);
if (r < 0 && sd_bus_error_has_name(&error, BUS_ERROR_LINK_BUSY)) {
sd_bus_error_free(&error);
r = call_dns(bus, argv + 2, bus_network_mgr, &error);
}
if (r < 0) {
if (arg_ifindex_permissive &&
sd_bus_error_has_name(&error, BUS_ERROR_NO_SUCH_LINK))
return 0;
return log_error_errno(r, "Failed to set DNS configuration: %s", bus_error_message(&error, r));
}
return 0;
}
static int call_domain(sd_bus *bus, char **domain, const BusLocator *locator, sd_bus_error *error) {
_cleanup_(sd_bus_message_unrefp) sd_bus_message *req = NULL;
char **p;
int r;
r = bus_message_new_method_call(bus, &req, locator, "SetLinkDomains");
if (r < 0)
return bus_log_create_error(r);
r = sd_bus_message_append(req, "i", arg_ifindex);
if (r < 0)
return bus_log_create_error(r);
r = sd_bus_message_open_container(req, 'a', "(sb)");
if (r < 0)
return bus_log_create_error(r);
/* If only argument is the empty string, then call SetLinkDomains() with an
* empty list, which will clear the list of domains for an interface. */
if (!strv_equal(domain, STRV_MAKE("")))
STRV_FOREACH(p, domain) {
const char *n;
n = **p == '~' ? *p + 1 : *p;
r = dns_name_is_valid(n);
if (r < 0)
return log_error_errno(r, "Failed to validate specified domain %s: %m", n);
if (r == 0) {
log_error("Domain not valid: %s", n);
return -EINVAL;
}
r = sd_bus_message_append(req, "(sb)", n, **p == '~');
if (r < 0)
return bus_log_create_error(r);
}
r = sd_bus_message_close_container(req);
if (r < 0)
return bus_log_create_error(r);
return sd_bus_call(bus, req, 0, error, NULL);
}
static int verb_domain(int argc, char **argv, void *userdata) {
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
sd_bus *bus = userdata;
int r;
assert(bus);
if (argc >= 2) {
r = ifname_mangle(argv[1]);
if (r < 0)
return r;
}
if (arg_ifindex <= 0)
return status_all(bus, STATUS_DOMAIN);
if (argc < 3)
return status_ifindex(bus, arg_ifindex, NULL, STATUS_DOMAIN, NULL);
r = call_domain(bus, argv + 2, bus_resolve_mgr, &error);
if (r < 0 && sd_bus_error_has_name(&error, BUS_ERROR_LINK_BUSY)) {
sd_bus_error_free(&error);
r = call_domain(bus, argv + 2, bus_network_mgr, &error);
}
if (r < 0) {
if (arg_ifindex_permissive &&
sd_bus_error_has_name(&error, BUS_ERROR_NO_SUCH_LINK))
return 0;
return log_error_errno(r, "Failed to set domain configuration: %s", bus_error_message(&error, r));
}
return 0;
}
static int verb_default_route(int argc, char **argv, void *userdata) {
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
sd_bus *bus = userdata;
int r, b;
assert(bus);
if (argc >= 2) {
r = ifname_mangle(argv[1]);
if (r < 0)
return r;
}
if (arg_ifindex <= 0)
return status_all(bus, STATUS_DEFAULT_ROUTE);
if (argc < 3)
return status_ifindex(bus, arg_ifindex, NULL, STATUS_DEFAULT_ROUTE, NULL);
b = parse_boolean(argv[2]);
if (b < 0)
return log_error_errno(b, "Failed to parse boolean argument: %s", argv[2]);
r = bus_call_method(bus, bus_resolve_mgr, "SetLinkDefaultRoute", &error, NULL, "ib", arg_ifindex, b);
if (r < 0 && sd_bus_error_has_name(&error, BUS_ERROR_LINK_BUSY)) {
sd_bus_error_free(&error);
r = bus_call_method(bus, bus_network_mgr, "SetLinkDefaultRoute", &error, NULL, "ib", arg_ifindex, b);
}
if (r < 0) {
if (arg_ifindex_permissive &&
sd_bus_error_has_name(&error, BUS_ERROR_NO_SUCH_LINK))
return 0;
return log_error_errno(r, "Failed to set default route configuration: %s", bus_error_message(&error, r));
}
return 0;
}
static int verb_llmnr(int argc, char **argv, void *userdata) {
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
sd_bus *bus = userdata;
int r;
assert(bus);
if (argc >= 2) {
r = ifname_mangle(argv[1]);
if (r < 0)
return r;
}
if (arg_ifindex <= 0)
return status_all(bus, STATUS_LLMNR);
if (argc < 3)
return status_ifindex(bus, arg_ifindex, NULL, STATUS_LLMNR, NULL);
r = bus_call_method(bus, bus_resolve_mgr, "SetLinkLLMNR", &error, NULL, "is", arg_ifindex, argv[2]);
if (r < 0 && sd_bus_error_has_name(&error, BUS_ERROR_LINK_BUSY)) {
sd_bus_error_free(&error);
r = bus_call_method(bus, bus_network_mgr, "SetLinkLLMNR", &error, NULL, "is", arg_ifindex, argv[2]);
}
if (r < 0) {
if (arg_ifindex_permissive &&
sd_bus_error_has_name(&error, BUS_ERROR_NO_SUCH_LINK))
return 0;
return log_error_errno(r, "Failed to set LLMNR configuration: %s", bus_error_message(&error, r));
}
return 0;
}
static int verb_mdns(int argc, char **argv, void *userdata) {
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
sd_bus *bus = userdata;
int r;
assert(bus);
if (argc >= 2) {
r = ifname_mangle(argv[1]);
if (r < 0)
return r;
}
if (arg_ifindex <= 0)
return status_all(bus, STATUS_MDNS);
if (argc < 3)
return status_ifindex(bus, arg_ifindex, NULL, STATUS_MDNS, NULL);
r = bus_call_method(bus, bus_resolve_mgr, "SetLinkMulticastDNS", &error, NULL, "is", arg_ifindex, argv[2]);
if (r < 0 && sd_bus_error_has_name(&error, BUS_ERROR_LINK_BUSY)) {
sd_bus_error_free(&error);
r = bus_call_method(
bus,
bus_network_mgr,
"SetLinkMulticastDNS",
&error,
NULL,
"is", arg_ifindex, argv[2]);
}
if (r < 0) {
if (arg_ifindex_permissive &&
sd_bus_error_has_name(&error, BUS_ERROR_NO_SUCH_LINK))
return 0;
return log_error_errno(r, "Failed to set MulticastDNS configuration: %s", bus_error_message(&error, r));
}
return 0;
}
static int verb_dns_over_tls(int argc, char **argv, void *userdata) {
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
sd_bus *bus = userdata;
int r;
assert(bus);
if (argc >= 2) {
r = ifname_mangle(argv[1]);
if (r < 0)
return r;
}
if (arg_ifindex <= 0)
return status_all(bus, STATUS_PRIVATE);
if (argc < 3)
return status_ifindex(bus, arg_ifindex, NULL, STATUS_PRIVATE, NULL);
r = bus_call_method(bus, bus_resolve_mgr, "SetLinkDNSOverTLS", &error, NULL, "is", arg_ifindex, argv[2]);
if (r < 0 && sd_bus_error_has_name(&error, BUS_ERROR_LINK_BUSY)) {
sd_bus_error_free(&error);
r = bus_call_method(
bus,
bus_network_mgr,
"SetLinkDNSOverTLS",
&error,
NULL,
"is", arg_ifindex, argv[2]);
}
if (r < 0) {
if (arg_ifindex_permissive &&
sd_bus_error_has_name(&error, BUS_ERROR_NO_SUCH_LINK))
return 0;
return log_error_errno(r, "Failed to set DNSOverTLS configuration: %s", bus_error_message(&error, r));
}
return 0;
}
static int verb_dnssec(int argc, char **argv, void *userdata) {
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
sd_bus *bus = userdata;
int r;
assert(bus);
if (argc >= 2) {
r = ifname_mangle(argv[1]);
if (r < 0)
return r;
}
if (arg_ifindex <= 0)
return status_all(bus, STATUS_DNSSEC);
if (argc < 3)
return status_ifindex(bus, arg_ifindex, NULL, STATUS_DNSSEC, NULL);
r = bus_call_method(bus, bus_resolve_mgr, "SetLinkDNSSEC", &error, NULL, "is", arg_ifindex, argv[2]);
if (r < 0 && sd_bus_error_has_name(&error, BUS_ERROR_LINK_BUSY)) {
sd_bus_error_free(&error);
r = bus_call_method(bus, bus_network_mgr, "SetLinkDNSSEC", &error, NULL, "is", arg_ifindex, argv[2]);
}
if (r < 0) {
if (arg_ifindex_permissive &&
sd_bus_error_has_name(&error, BUS_ERROR_NO_SUCH_LINK))
return 0;
return log_error_errno(r, "Failed to set DNSSEC configuration: %s", bus_error_message(&error, r));
}
return 0;
}
static int call_nta(sd_bus *bus, char **nta, const BusLocator *locator, sd_bus_error *error) {
_cleanup_(sd_bus_message_unrefp) sd_bus_message *req = NULL;
int r;
r = bus_message_new_method_call(bus, &req, locator, "SetLinkDNSSECNegativeTrustAnchors");
if (r < 0)
return bus_log_create_error(r);
r = sd_bus_message_append(req, "i", arg_ifindex);
if (r < 0)
return bus_log_create_error(r);
r = sd_bus_message_append_strv(req, nta);
if (r < 0)
return bus_log_create_error(r);
return sd_bus_call(bus, req, 0, error, NULL);
}
static int verb_nta(int argc, char **argv, void *userdata) {
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
sd_bus *bus = userdata;
char **p;
int r;
bool clear;
assert(bus);
if (argc >= 2) {
r = ifname_mangle(argv[1]);
if (r < 0)
return r;
}
if (arg_ifindex <= 0)
return status_all(bus, STATUS_NTA);
if (argc < 3)
return status_ifindex(bus, arg_ifindex, NULL, STATUS_NTA, NULL);
/* If only argument is the empty string, then call SetLinkDNSSECNegativeTrustAnchors()
* with an empty list, which will clear the list of domains for an interface. */
clear = strv_equal(argv + 2, STRV_MAKE(""));
if (!clear)
STRV_FOREACH(p, argv + 2) {
r = dns_name_is_valid(*p);
if (r < 0)
return log_error_errno(r, "Failed to validate specified domain %s: %m", *p);
if (r == 0) {
log_error("Domain not valid: %s", *p);
return -EINVAL;
}
}
r = call_nta(bus, clear ? NULL : argv + 2, bus_resolve_mgr, &error);
if (r < 0 && sd_bus_error_has_name(&error, BUS_ERROR_LINK_BUSY)) {
sd_bus_error_free(&error);
r = call_nta(bus, clear ? NULL : argv + 2, bus_network_mgr, &error);
}
if (r < 0) {
if (arg_ifindex_permissive &&
sd_bus_error_has_name(&error, BUS_ERROR_NO_SUCH_LINK))
return 0;
return log_error_errno(r, "Failed to set DNSSEC NTA configuration: %s", bus_error_message(&error, r));
}
return 0;
}
static int verb_revert_link(int argc, char **argv, void *userdata) {
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
sd_bus *bus = userdata;
int r;
assert(bus);
if (argc >= 2) {
r = ifname_mangle(argv[1]);
if (r < 0)
return r;
}
if (arg_ifindex <= 0)
return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Interface argument required.");
r = bus_call_method(bus, bus_resolve_mgr, "RevertLink", &error, NULL, "i", arg_ifindex);
if (r < 0 && sd_bus_error_has_name(&error, BUS_ERROR_LINK_BUSY)) {
sd_bus_error_free(&error);
r = bus_call_method(bus, bus_network_mgr, "RevertLinkDNS", &error, NULL, "i", arg_ifindex);
}
if (r < 0) {
if (arg_ifindex_permissive &&
sd_bus_error_has_name(&error, BUS_ERROR_NO_SUCH_LINK))
return 0;
return log_error_errno(r, "Failed to revert interface configuration: %s", bus_error_message(&error, r));
}
return 0;
}
static int verb_log_level(int argc, char *argv[], void *userdata) {
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
sd_bus *bus = userdata;
int r;
assert(bus);
if (argc == 1) {
_cleanup_free_ char *level = NULL;
r = sd_bus_get_property_string(
bus,
"org.freedesktop.resolve1",
"/org/freedesktop/LogControl1",
"org.freedesktop.LogControl1",
"LogLevel",
&error,
&level);
if (r < 0)
return log_error_errno(r, "Failed to get log level: %s", bus_error_message(&error, r));
puts(level);
} else {
assert(argc == 2);
r = sd_bus_set_property(
bus,
"org.freedesktop.resolve1",
"/org/freedesktop/LogControl1",
"org.freedesktop.LogControl1",
"LogLevel",
&error,
"s",
argv[1]);
if (r < 0)
return log_error_errno(r, "Failed to set log level: %s", bus_error_message(&error, r));
}
return 0;
}
static void help_protocol_types(void) {
if (arg_legend)
puts("Known protocol types:");
puts("dns\nllmnr\nllmnr-ipv4\nllmnr-ipv6\nmdns\nmdns-ipv4\nmdns-ipv6");
}
static void help_dns_types(void) {
if (arg_legend)
puts("Known DNS RR types:");
DUMP_STRING_TABLE(dns_type, int, _DNS_TYPE_MAX);
}
static void help_dns_classes(void) {
if (arg_legend)
puts("Known DNS RR classes:");
DUMP_STRING_TABLE(dns_class, int, _DNS_CLASS_MAX);
}
static int compat_help(void) {
_cleanup_free_ char *link = NULL;
int r;
r = terminal_urlify_man("resolvectl", "1", &link);
if (r < 0)
return log_oom();
printf("%1$s [OPTIONS...] HOSTNAME|ADDRESS...\n"
"%1$s [OPTIONS...] --service [[NAME] TYPE] DOMAIN\n"
"%1$s [OPTIONS...] --openpgp EMAIL@DOMAIN...\n"
"%1$s [OPTIONS...] --statistics\n"
"%1$s [OPTIONS...] --reset-statistics\n"
"\n"
"%2$sResolve domain names, IPv4 and IPv6 addresses, DNS records, and services.%3$s\n\n"
" -h --help Show this help\n"
" --version Show package version\n"
" --no-pager Do not pipe output into a pager\n"
" -4 Resolve IPv4 addresses\n"
" -6 Resolve IPv6 addresses\n"
" -i --interface=INTERFACE Look on interface\n"
" -p --protocol=PROTO|help Look via protocol\n"
" -t --type=TYPE|help Query RR with DNS type\n"
" -c --class=CLASS|help Query RR with DNS class\n"
" --service Resolve service (SRV)\n"
" --service-address=BOOL Resolve address for services (default: yes)\n"
" --service-txt=BOOL Resolve TXT records for services (default: yes)\n"
" --openpgp Query OpenPGP public key\n"
" --tlsa Query TLS public key\n"
" --cname=BOOL Follow CNAME redirects (default: yes)\n"
" --search=BOOL Use search domains for single-label names\n"
" (default: yes)\n"
" --raw[=payload|packet] Dump the answer as binary data\n"
" --legend=BOOL Print headers and additional info (default: yes)\n"
" --statistics Show resolver statistics\n"
" --reset-statistics Reset resolver statistics\n"
" --status Show link and server status\n"
" --flush-caches Flush all local DNS caches\n"
" --reset-server-features\n"
" Forget learnt DNS server feature levels\n"
" --set-dns=SERVER Set per-interface DNS server address\n"
" --set-domain=DOMAIN Set per-interface search domain\n"
" --set-llmnr=MODE Set per-interface LLMNR mode\n"
" --set-mdns=MODE Set per-interface MulticastDNS mode\n"
" --set-dnsovertls=MODE Set per-interface DNS-over-TLS mode\n"
" --set-dnssec=MODE Set per-interface DNSSEC mode\n"
" --set-nta=DOMAIN Set per-interface DNSSEC NTA\n"
" --revert Revert per-interface configuration\n"
"\nSee the %4$s for details.\n"
, program_invocation_short_name
, ansi_highlight()
, ansi_normal()
, link
);
return 0;
}
static int native_help(void) {
_cleanup_free_ char *link = NULL;
int r;
r = terminal_urlify_man("resolvectl", "1", &link);
if (r < 0)
return log_oom();
printf("%s [OPTIONS...] COMMAND ...\n"
"\n"
"%sSend control commands to the network name resolution manager, or%s\n"
"%sresolve domain names, IPv4 and IPv6 addresses, DNS records, and services.%s\n"
"\nCommands:\n"
" query HOSTNAME|ADDRESS... Resolve domain names, IPv4 and IPv6 addresses\n"
" service [[NAME] TYPE] DOMAIN Resolve service (SRV)\n"
" openpgp EMAIL@DOMAIN... Query OpenPGP public key\n"
" tlsa DOMAIN[:PORT]... Query TLS public key\n"
" status [LINK...] Show link and server status\n"
" statistics Show resolver statistics\n"
" reset-statistics Reset resolver statistics\n"
" flush-caches Flush all local DNS caches\n"
" reset-server-features Forget learnt DNS server feature levels\n"
" dns [LINK [SERVER...]] Get/set per-interface DNS server address\n"
" domain [LINK [DOMAIN...]] Get/set per-interface search domain\n"
" default-route [LINK [BOOL]] Get/set per-interface default route flag\n"
" llmnr [LINK [MODE]] Get/set per-interface LLMNR mode\n"
" mdns [LINK [MODE]] Get/set per-interface MulticastDNS mode\n"
" dnsovertls [LINK [MODE]] Get/set per-interface DNS-over-TLS mode\n"
" dnssec [LINK [MODE]] Get/set per-interface DNSSEC mode\n"
" nta [LINK [DOMAIN...]] Get/set per-interface DNSSEC NTA\n"
" revert LINK Revert per-interface configuration\n"
"\nOptions:\n"
" -h --help Show this help\n"
" --version Show package version\n"
" --no-pager Do not pipe output into a pager\n"
" -4 Resolve IPv4 addresses\n"
" -6 Resolve IPv6 addresses\n"
" -i --interface=INTERFACE Look on interface\n"
" -p --protocol=PROTO|help Look via protocol\n"
" -t --type=TYPE|help Query RR with DNS type\n"
" -c --class=CLASS|help Query RR with DNS class\n"
" --service-address=BOOL Resolve address for services (default: yes)\n"
" --service-txt=BOOL Resolve TXT records for services (default: yes)\n"
" --cname=BOOL Follow CNAME redirects (default: yes)\n"
" --search=BOOL Use search domains for single-label names\n"
" (default: yes)\n"
" --raw[=payload|packet] Dump the answer as binary data\n"
" --legend=BOOL Print headers and additional info (default: yes)\n"
"\nSee the %s for details.\n"
, program_invocation_short_name
, ansi_highlight()
, ansi_normal()
, ansi_highlight()
, ansi_normal()
, link
);
return 0;
}
static int verb_help(int argc, char **argv, void *userdata) {
return native_help();
}
static int compat_parse_argv(int argc, char *argv[]) {
enum {
ARG_VERSION = 0x100,
ARG_LEGEND,
ARG_SERVICE,
ARG_CNAME,
ARG_SERVICE_ADDRESS,
ARG_SERVICE_TXT,
ARG_OPENPGP,
ARG_TLSA,
ARG_RAW,
ARG_SEARCH,
ARG_STATISTICS,
ARG_RESET_STATISTICS,
ARG_STATUS,
ARG_FLUSH_CACHES,
ARG_RESET_SERVER_FEATURES,
ARG_NO_PAGER,
ARG_SET_DNS,
ARG_SET_DOMAIN,
ARG_SET_LLMNR,
ARG_SET_MDNS,
ARG_SET_PRIVATE,
ARG_SET_DNSSEC,
ARG_SET_NTA,
ARG_REVERT_LINK,
};
static const struct option options[] = {
{ "help", no_argument, NULL, 'h' },
{ "version", no_argument, NULL, ARG_VERSION },
{ "type", required_argument, NULL, 't' },
{ "class", required_argument, NULL, 'c' },
{ "legend", required_argument, NULL, ARG_LEGEND },
{ "interface", required_argument, NULL, 'i' },
{ "protocol", required_argument, NULL, 'p' },
{ "cname", required_argument, NULL, ARG_CNAME },
{ "service", no_argument, NULL, ARG_SERVICE },
{ "service-address", required_argument, NULL, ARG_SERVICE_ADDRESS },
{ "service-txt", required_argument, NULL, ARG_SERVICE_TXT },
{ "openpgp", no_argument, NULL, ARG_OPENPGP },
{ "tlsa", optional_argument, NULL, ARG_TLSA },
{ "raw", optional_argument, NULL, ARG_RAW },
{ "search", required_argument, NULL, ARG_SEARCH },
{ "statistics", no_argument, NULL, ARG_STATISTICS, },
{ "reset-statistics", no_argument, NULL, ARG_RESET_STATISTICS },
{ "status", no_argument, NULL, ARG_STATUS },
{ "flush-caches", no_argument, NULL, ARG_FLUSH_CACHES },
{ "reset-server-features", no_argument, NULL, ARG_RESET_SERVER_FEATURES },
{ "no-pager", no_argument, NULL, ARG_NO_PAGER },
{ "set-dns", required_argument, NULL, ARG_SET_DNS },
{ "set-domain", required_argument, NULL, ARG_SET_DOMAIN },
{ "set-llmnr", required_argument, NULL, ARG_SET_LLMNR },
{ "set-mdns", required_argument, NULL, ARG_SET_MDNS },
{ "set-dnsovertls", required_argument, NULL, ARG_SET_PRIVATE },
{ "set-dnssec", required_argument, NULL, ARG_SET_DNSSEC },
{ "set-nta", required_argument, NULL, ARG_SET_NTA },
{ "revert", no_argument, NULL, ARG_REVERT_LINK },
{}
};
int c, r;
assert(argc >= 0);
assert(argv);
while ((c = getopt_long(argc, argv, "h46i:t:c:p:", options, NULL)) >= 0)
switch(c) {
case 'h':
return compat_help();
case ARG_VERSION:
return version();
case '4':
arg_family = AF_INET;
break;
case '6':
arg_family = AF_INET6;
break;
case 'i':
r = ifname_mangle(optarg);
if (r < 0)
return r;
break;
case 't':
if (streq(optarg, "help")) {
help_dns_types();
return 0;
}
r = dns_type_from_string(optarg);
if (r < 0) {
log_error("Failed to parse RR record type %s", optarg);
return r;
}
arg_type = (uint16_t) r;
assert((int) arg_type == r);
arg_mode = MODE_RESOLVE_RECORD;
break;
case 'c':
if (streq(optarg, "help")) {
help_dns_classes();
return 0;
}
r = dns_class_from_string(optarg);
if (r < 0) {
log_error("Failed to parse RR record class %s", optarg);
return r;
}
arg_class = (uint16_t) r;
assert((int) arg_class == r);
break;
case ARG_LEGEND:
r = parse_boolean(optarg);
if (r < 0)
return log_error_errno(r, "Failed to parse --legend= argument");
arg_legend = r;
break;
case 'p':
if (streq(optarg, "help")) {
help_protocol_types();
return 0;
} else if (streq(optarg, "dns"))
arg_flags |= SD_RESOLVED_DNS;
else if (streq(optarg, "llmnr"))
arg_flags |= SD_RESOLVED_LLMNR;
else if (streq(optarg, "llmnr-ipv4"))
arg_flags |= SD_RESOLVED_LLMNR_IPV4;
else if (streq(optarg, "llmnr-ipv6"))
arg_flags |= SD_RESOLVED_LLMNR_IPV6;
else if (streq(optarg, "mdns"))
arg_flags |= SD_RESOLVED_MDNS;
else if (streq(optarg, "mdns-ipv4"))
arg_flags |= SD_RESOLVED_MDNS_IPV4;
else if (streq(optarg, "mdns-ipv6"))
arg_flags |= SD_RESOLVED_MDNS_IPV6;
else
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
"Unknown protocol specifier: %s", optarg);
break;
case ARG_SERVICE:
arg_mode = MODE_RESOLVE_SERVICE;
break;
case ARG_OPENPGP:
arg_mode = MODE_RESOLVE_OPENPGP;
break;
case ARG_TLSA:
arg_mode = MODE_RESOLVE_TLSA;
if (!optarg || service_family_is_valid(optarg))
arg_service_family = optarg;
else
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
"Unknown service family \"%s\".", optarg);
break;
case ARG_RAW:
if (on_tty())
return log_error_errno(SYNTHETIC_ERRNO(ENOTTY),
"Refusing to write binary data to tty.");
if (optarg == NULL || streq(optarg, "payload"))
arg_raw = RAW_PAYLOAD;
else if (streq(optarg, "packet"))
arg_raw = RAW_PACKET;
else
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
"Unknown --raw specifier \"%s\".",
optarg);
arg_legend = false;
break;
case ARG_CNAME:
r = parse_boolean(optarg);
if (r < 0)
return log_error_errno(r, "Failed to parse --cname= argument.");
SET_FLAG(arg_flags, SD_RESOLVED_NO_CNAME, r == 0);
break;
case ARG_SERVICE_ADDRESS:
r = parse_boolean(optarg);
if (r < 0)
return log_error_errno(r, "Failed to parse --service-address= argument.");
SET_FLAG(arg_flags, SD_RESOLVED_NO_ADDRESS, r == 0);
break;
case ARG_SERVICE_TXT:
r = parse_boolean(optarg);
if (r < 0)
return log_error_errno(r, "Failed to parse --service-txt= argument.");
SET_FLAG(arg_flags, SD_RESOLVED_NO_TXT, r == 0);
break;
case ARG_SEARCH:
r = parse_boolean(optarg);
if (r < 0)
return log_error_errno(r, "Failed to parse --search argument.");
SET_FLAG(arg_flags, SD_RESOLVED_NO_SEARCH, r == 0);
break;
case ARG_STATISTICS:
arg_mode = MODE_STATISTICS;
break;
case ARG_RESET_STATISTICS:
arg_mode = MODE_RESET_STATISTICS;
break;
case ARG_FLUSH_CACHES:
arg_mode = MODE_FLUSH_CACHES;
break;
case ARG_RESET_SERVER_FEATURES:
arg_mode = MODE_RESET_SERVER_FEATURES;
break;
case ARG_STATUS:
arg_mode = MODE_STATUS;
break;
case ARG_NO_PAGER:
arg_pager_flags |= PAGER_DISABLE;
break;
case ARG_SET_DNS:
r = strv_extend(&arg_set_dns, optarg);
if (r < 0)
return log_oom();
arg_mode = MODE_SET_LINK;
break;
case ARG_SET_DOMAIN:
r = strv_extend(&arg_set_domain, optarg);
if (r < 0)
return log_oom();
arg_mode = MODE_SET_LINK;
break;
case ARG_SET_LLMNR:
arg_set_llmnr = optarg;
arg_mode = MODE_SET_LINK;
break;
case ARG_SET_MDNS:
arg_set_mdns = optarg;
arg_mode = MODE_SET_LINK;
break;
case ARG_SET_PRIVATE:
arg_set_dns_over_tls = optarg;
arg_mode = MODE_SET_LINK;
break;
case ARG_SET_DNSSEC:
arg_set_dnssec = optarg;
arg_mode = MODE_SET_LINK;
break;
case ARG_SET_NTA:
r = strv_extend(&arg_set_nta, optarg);
if (r < 0)
return log_oom();
arg_mode = MODE_SET_LINK;
break;
case ARG_REVERT_LINK:
arg_mode = MODE_REVERT_LINK;
break;
case '?':
return -EINVAL;
default:
assert_not_reached("Unhandled option");
}
if (arg_type == 0 && arg_class != 0)
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
"--class= may only be used in conjunction with --type=.");
if (arg_type != 0 && arg_mode == MODE_RESOLVE_SERVICE)
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
"--service and --type= may not be combined.");
if (arg_type != 0 && arg_class == 0)
arg_class = DNS_CLASS_IN;
if (arg_class != 0 && arg_type == 0)
arg_type = DNS_TYPE_A;
if (IN_SET(arg_mode, MODE_SET_LINK, MODE_REVERT_LINK)) {
if (arg_ifindex <= 0)
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
"--set-dns=, --set-domain=, --set-llmnr=, --set-mdns=, --set-dnsovertls=, --set-dnssec=, --set-nta= and --revert require --interface=.");
}
return 1 /* work to do */;
}
static int native_parse_argv(int argc, char *argv[]) {
enum {
ARG_VERSION = 0x100,
ARG_LEGEND,
ARG_CNAME,
ARG_SERVICE_ADDRESS,
ARG_SERVICE_TXT,
ARG_RAW,
ARG_SEARCH,
ARG_NO_PAGER,
};
static const struct option options[] = {
{ "help", no_argument, NULL, 'h' },
{ "version", no_argument, NULL, ARG_VERSION },
{ "type", required_argument, NULL, 't' },
{ "class", required_argument, NULL, 'c' },
{ "legend", required_argument, NULL, ARG_LEGEND },
{ "interface", required_argument, NULL, 'i' },
{ "protocol", required_argument, NULL, 'p' },
{ "cname", required_argument, NULL, ARG_CNAME },
{ "service-address", required_argument, NULL, ARG_SERVICE_ADDRESS },
{ "service-txt", required_argument, NULL, ARG_SERVICE_TXT },
{ "raw", optional_argument, NULL, ARG_RAW },
{ "search", required_argument, NULL, ARG_SEARCH },
{ "no-pager", no_argument, NULL, ARG_NO_PAGER },
{}
};
int c, r;
assert(argc >= 0);
assert(argv);
while ((c = getopt_long(argc, argv, "h46i:t:c:p:", options, NULL)) >= 0)
switch(c) {
case 'h':
return native_help();
case ARG_VERSION:
return version();
case '4':
arg_family = AF_INET;
break;
case '6':
arg_family = AF_INET6;
break;
case 'i':
r = ifname_mangle(optarg);
if (r < 0)
return r;
break;
case 't':
if (streq(optarg, "help")) {
help_dns_types();
return 0;
}
r = dns_type_from_string(optarg);
if (r < 0) {
log_error("Failed to parse RR record type %s", optarg);
return r;
}
arg_type = (uint16_t) r;
assert((int) arg_type == r);
break;
case 'c':
if (streq(optarg, "help")) {
help_dns_classes();
return 0;
}
r = dns_class_from_string(optarg);
if (r < 0) {
log_error("Failed to parse RR record class %s", optarg);
return r;
}
arg_class = (uint16_t) r;
assert((int) arg_class == r);
break;
case ARG_LEGEND:
r = parse_boolean(optarg);
if (r < 0)
return log_error_errno(r, "Failed to parse --legend= argument");
arg_legend = r;
break;
case 'p':
if (streq(optarg, "help")) {
help_protocol_types();
return 0;
} else if (streq(optarg, "dns"))
arg_flags |= SD_RESOLVED_DNS;
else if (streq(optarg, "llmnr"))
arg_flags |= SD_RESOLVED_LLMNR;
else if (streq(optarg, "llmnr-ipv4"))
arg_flags |= SD_RESOLVED_LLMNR_IPV4;
else if (streq(optarg, "llmnr-ipv6"))
arg_flags |= SD_RESOLVED_LLMNR_IPV6;
else if (streq(optarg, "mdns"))
arg_flags |= SD_RESOLVED_MDNS;
else if (streq(optarg, "mdns-ipv4"))
arg_flags |= SD_RESOLVED_MDNS_IPV4;
else if (streq(optarg, "mdns-ipv6"))
arg_flags |= SD_RESOLVED_MDNS_IPV6;
else
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
"Unknown protocol specifier: %s",
optarg);
break;
case ARG_RAW:
if (on_tty())
return log_error_errno(SYNTHETIC_ERRNO(ENOTTY),
"Refusing to write binary data to tty.");
if (optarg == NULL || streq(optarg, "payload"))
arg_raw = RAW_PAYLOAD;
else if (streq(optarg, "packet"))
arg_raw = RAW_PACKET;
else
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
"Unknown --raw specifier \"%s\".",
optarg);
arg_legend = false;
break;
case ARG_CNAME:
r = parse_boolean(optarg);
if (r < 0)
return log_error_errno(r, "Failed to parse --cname= argument.");
SET_FLAG(arg_flags, SD_RESOLVED_NO_CNAME, r == 0);
break;
case ARG_SERVICE_ADDRESS:
r = parse_boolean(optarg);
if (r < 0)
return log_error_errno(r, "Failed to parse --service-address= argument.");
SET_FLAG(arg_flags, SD_RESOLVED_NO_ADDRESS, r == 0);
break;
case ARG_SERVICE_TXT:
r = parse_boolean(optarg);
if (r < 0)
return log_error_errno(r, "Failed to parse --service-txt= argument.");
SET_FLAG(arg_flags, SD_RESOLVED_NO_TXT, r == 0);
break;
case ARG_SEARCH:
r = parse_boolean(optarg);
if (r < 0)
return log_error_errno(r, "Failed to parse --search argument.");
SET_FLAG(arg_flags, SD_RESOLVED_NO_SEARCH, r == 0);
break;
case ARG_NO_PAGER:
arg_pager_flags |= PAGER_DISABLE;
break;
case '?':
return -EINVAL;
default:
assert_not_reached("Unhandled option");
}
if (arg_type == 0 && arg_class != 0)
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
"--class= may only be used in conjunction with --type=.");
if (arg_type != 0 && arg_class == 0)
arg_class = DNS_CLASS_IN;
if (arg_class != 0 && arg_type == 0)
arg_type = DNS_TYPE_A;
return 1 /* work to do */;
}
static int native_main(int argc, char *argv[], sd_bus *bus) {
static const Verb verbs[] = {
{ "help", VERB_ANY, VERB_ANY, 0, verb_help },
{ "status", VERB_ANY, VERB_ANY, VERB_DEFAULT, verb_status },
{ "query", 2, VERB_ANY, 0, verb_query },
{ "service", 2, 4, 0, verb_service },
{ "openpgp", 2, VERB_ANY, 0, verb_openpgp },
{ "tlsa", 2, VERB_ANY, 0, verb_tlsa },
{ "statistics", VERB_ANY, 1, 0, show_statistics },
{ "reset-statistics", VERB_ANY, 1, 0, reset_statistics },
{ "flush-caches", VERB_ANY, 1, 0, flush_caches },
{ "reset-server-features", VERB_ANY, 1, 0, reset_server_features },
{ "dns", VERB_ANY, VERB_ANY, 0, verb_dns },
{ "domain", VERB_ANY, VERB_ANY, 0, verb_domain },
{ "default-route", VERB_ANY, 3, 0, verb_default_route },
{ "llmnr", VERB_ANY, 3, 0, verb_llmnr },
{ "mdns", VERB_ANY, 3, 0, verb_mdns },
{ "dnsovertls", VERB_ANY, 3, 0, verb_dns_over_tls },
{ "dnssec", VERB_ANY, 3, 0, verb_dnssec },
{ "nta", VERB_ANY, VERB_ANY, 0, verb_nta },
{ "revert", VERB_ANY, 2, 0, verb_revert_link },
{ "log-level", VERB_ANY, 2, 0, verb_log_level },
{}
};
return dispatch_verb(argc, argv, verbs, bus);
}
static int translate(const char *verb, const char *single_arg, size_t num_args, char **args, sd_bus *bus) {
char **fake, **p;
size_t num;
assert(verb);
assert(num_args == 0 || args);
num = !!single_arg + num_args + 1;
p = fake = newa0(char *, num + 1);
*p++ = (char *) verb;
if (single_arg)
*p++ = (char *) single_arg;
for (size_t i = 0; i < num_args; i++)
*p++ = args[i];
optind = 0;
return native_main((int) num, fake, bus);
}
static int compat_main(int argc, char *argv[], sd_bus *bus) {
int r = 0;
switch (arg_mode) {
case MODE_RESOLVE_HOST:
case MODE_RESOLVE_RECORD:
return translate("query", NULL, argc - optind, argv + optind, bus);
case MODE_RESOLVE_SERVICE:
return translate("service", NULL, argc - optind, argv + optind, bus);
case MODE_RESOLVE_OPENPGP:
return translate("openpgp", NULL, argc - optind, argv + optind, bus);
case MODE_RESOLVE_TLSA:
return translate("tlsa", arg_service_family, argc - optind, argv + optind, bus);
case MODE_STATISTICS:
return translate("statistics", NULL, 0, NULL, bus);
case MODE_RESET_STATISTICS:
return translate("reset-statistics", NULL, 0, NULL, bus);
case MODE_FLUSH_CACHES:
return translate("flush-caches", NULL, 0, NULL, bus);
case MODE_RESET_SERVER_FEATURES:
return translate("reset-server-features", NULL, 0, NULL, bus);
case MODE_STATUS:
return translate("status", NULL, argc - optind, argv + optind, bus);
case MODE_SET_LINK:
assert(arg_ifname);
if (arg_set_dns) {
r = translate("dns", arg_ifname, strv_length(arg_set_dns), arg_set_dns, bus);
if (r < 0)
return r;
}
if (arg_set_domain) {
r = translate("domain", arg_ifname, strv_length(arg_set_domain), arg_set_domain, bus);
if (r < 0)
return r;
}
if (arg_set_nta) {
r = translate("nta", arg_ifname, strv_length(arg_set_nta), arg_set_nta, bus);
if (r < 0)
return r;
}
if (arg_set_llmnr) {
r = translate("llmnr", arg_ifname, 1, (char **) &arg_set_llmnr, bus);
if (r < 0)
return r;
}
if (arg_set_mdns) {
r = translate("mdns", arg_ifname, 1, (char **) &arg_set_mdns, bus);
if (r < 0)
return r;
}
if (arg_set_dns_over_tls) {
r = translate("dnsovertls", arg_ifname, 1, (char **) &arg_set_dns_over_tls, bus);
if (r < 0)
return r;
}
if (arg_set_dnssec) {
r = translate("dnssec", arg_ifname, 1, (char **) &arg_set_dnssec, bus);
if (r < 0)
return r;
}
return r;
case MODE_REVERT_LINK:
assert(arg_ifname);
return translate("revert", arg_ifname, 0, NULL, bus);
case _MODE_INVALID:
assert_not_reached("invalid mode");
}
return 0;
}
static int run(int argc, char **argv) {
_cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
int r;
setlocale(LC_ALL, "");
log_setup_cli();
if (streq(program_invocation_short_name, "resolvconf"))
r = resolvconf_parse_argv(argc, argv);
else if (streq(program_invocation_short_name, "systemd-resolve"))
r = compat_parse_argv(argc, argv);
else
r = native_parse_argv(argc, argv);
if (r <= 0)
return r;
r = sd_bus_open_system(&bus);
if (r < 0)
return log_error_errno(r, "sd_bus_open_system: %m");
if (STR_IN_SET(program_invocation_short_name, "systemd-resolve", "resolvconf"))
return compat_main(argc, argv, bus);
return native_main(argc, argv, bus);
}
DEFINE_MAIN_FUNCTION(run);