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third-party-mirror / systemd / f229149d865bb087742add2415d0c7c321294591 / . / src / resolve / resolvectl.c
blob: 2638e985fb42c9f1d40f22c0dc944eac36c33347 [file] [log] [blame]
/* SPDX-License-Identifier: LGPL-2.1-or-later */
#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 "build.h"
#include "bus-common-errors.h"
#include "bus-error.h"
#include "bus-locator.h"
#include "bus-map-properties.h"
#include "bus-message-util.h"
#include "dns-domain.h"
#include "errno-list.h"
#include "escape.h"
#include "format-table.h"
#include "format-util.h"
#include "gcrypt-util.h"
#include "hostname-util.h"
#include "json.h"
#include "main-func.h"
#include "missing_network.h"
#include "netlink-util.h"
#include "openssl-util.h"
#include "pager.h"
#include "parse-argument.h"
#include "parse-util.h"
#include "pretty-print.h"
#include "process-util.h"
#include "resolvconf-compat.h"
#include "resolve-util.h"
#include "resolvectl.h"
#include "resolved-def.h"
#include "resolved-dns-packet.h"
#include "resolved-util.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 "utf8.h"
#include "varlink.h"
#include "verb-log-control.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 JsonFormatFlags arg_json_format_flags = JSON_FORMAT_OFF;
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_full(const char *s, bool drop_protocol_specifier) {
_cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL;
_cleanup_strv_free_ char **found = NULL;
int r;
assert(s);
if (drop_protocol_specifier) {
_cleanup_free_ char *buf = NULL;
int ifindex_longest_name = -ENODEV;
/* When invoked as resolvconf, drop the protocol specifier(s) at the end. */
buf = strdup(s);
if (!buf)
return log_oom();
for (;;) {
r = rtnl_resolve_interface(&rtnl, buf);
if (r > 0) {
if (ifindex_longest_name <= 0)
ifindex_longest_name = r;
r = strv_extend(&found, buf);
if (r < 0)
return log_oom();
}
char *dot = strrchr(buf, '.');
if (!dot)
break;
*dot = '\0';
}
unsigned n = strv_length(found);
if (n > 1) {
_cleanup_free_ char *joined = NULL;
joined = strv_join(found, ", ");
log_warning("Found multiple interfaces (%s) matching with '%s'. Using '%s' (ifindex=%i).",
strna(joined), s, found[0], ifindex_longest_name);
} else if (n == 1) {
const char *proto;
proto = ASSERT_PTR(startswith(s, found[0]));
if (!isempty(proto))
log_info("Dropped protocol specifier '%s' from '%s'. Using '%s' (ifindex=%i).",
proto, s, found[0], ifindex_longest_name);
}
r = ifindex_longest_name;
} else
r = rtnl_resolve_interface(&rtnl, s);
if (r < 0) {
if (ERRNO_IS_DEVICE_ABSENT(r) && arg_ifindex_permissive) {
log_debug_errno(r, "Interface '%s' not found, but -f specified, ignoring: %m", s);
return 0; /* done */
}
return log_error_errno(r, "Failed to resolve interface \"%s\": %m", s);
}
if (arg_ifindex > 0 && arg_ifindex != r)
return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Specified multiple different interfaces. Refusing.");
arg_ifindex = r;
return free_and_strdup_warn(&arg_ifname, found ? found[0] : s); /* found */
}
static void print_source(uint64_t flags, usec_t rtt) {
if (!arg_legend)
return;
if (flags == 0)
return;
printf("\n%s-- Information acquired via", ansi_grey());
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" : "");
printf(" in %s.%s\n"
"%s-- Data is authenticated: %s; Data was acquired via local or encrypted transport: %s%s\n",
FORMAT_TIMESPAN(rtt, 100),
ansi_normal(),
ansi_grey(),
yes_no(flags & SD_RESOLVED_AUTHENTICATED),
yes_no(flags & SD_RESOLVED_CONFIDENTIAL),
ansi_normal());
if ((flags & (SD_RESOLVED_FROM_MASK|SD_RESOLVED_SYNTHETIC)) != 0)
printf("%s-- Data from:%s%s%s%s%s%s\n",
ansi_grey(),
FLAGS_SET(flags, SD_RESOLVED_SYNTHETIC) ? " synthetic" : "",
FLAGS_SET(flags, SD_RESOLVED_FROM_CACHE) ? " cache" : "",
FLAGS_SET(flags, SD_RESOLVED_FROM_ZONE) ? " zone" : "",
FLAGS_SET(flags, SD_RESOLVED_FROM_TRUST_ANCHOR) ? " trust-anchor" : "",
FLAGS_SET(flags, SD_RESOLVED_FROM_NETWORK) ? " network" : "",
ansi_normal());
}
static void print_ifindex_comment(int printed_so_far, int ifindex) {
char ifname[IF_NAMESIZE];
int r;
if (ifindex <= 0)
return;
r = format_ifname(ifindex, ifname);
if (r < 0)
return (void) log_warning_errno(r, "Failed to resolve interface name for index %i, ignoring: %m", ifindex);
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_error(const char *name, int r, const sd_bus_error *error) {
if (sd_bus_error_has_name(error, BUS_ERROR_DNS_NXDOMAIN))
return log_error_errno(r, "%s: %s", name, bus_error_message(error, r));
return log_error_errno(r, "%s: resolve call failed: %s", name, bus_error_message(error, r));
}
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 resolve_host_error(name, r, &error);
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;
union in_addr_union a;
assert_cc(sizeof(int) == sizeof(int32_t));
r = sd_bus_message_read(reply, "i", &ifindex);
if (r < 0)
return bus_log_parse_error(r);
sd_bus_error_free(&error);
r = bus_message_read_in_addr_auto(reply, &error, &family, &a);
if (r < 0 && !sd_bus_error_has_name(&error, SD_BUS_ERROR_INVALID_ARGS))
return log_error_errno(r, "%s: systemd-resolved returned invalid result: %s", name, bus_error_message(&error, r));
r = sd_bus_message_exit_container(reply);
if (r < 0)
return bus_log_parse_error(r);
if (sd_bus_error_has_name(&error, SD_BUS_ERROR_INVALID_ARGS)) {
log_debug_errno(r, "%s: systemd-resolved returned invalid result, ignoring: %s", name, bus_error_message(&error, r));
continue;
}
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)
return log_error_errno(SYNTHETIC_ERRNO(ESRCH),
"%s: no addresses found", name);
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)
return log_error_errno(SYNTHETIC_ERRNO(ESRCH),
"%s: no names found", pretty);
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;
int r;
r = dns_resource_record_new_from_raw(&rr, d, l);
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 idna_candidate(const char *name, char **ret) {
_cleanup_free_ char *idnafied = NULL;
int r;
assert(name);
assert(ret);
r = dns_name_apply_idna(name, &idnafied);
if (r < 0)
return log_error_errno(r, "Failed to apply IDNA to name '%s': %m", name);
if (r > 0 && !streq(name, idnafied)) {
*ret = TAKE_PTR(idnafied);
return true;
}
*ret = NULL;
return false;
}
static bool single_label_nonsynthetic(const char *name) {
_cleanup_free_ char *first_label = NULL;
int r;
if (!dns_name_is_single_label(name))
return false;
if (is_localhost(name) ||
is_gateway_hostname(name) ||
is_outbound_hostname(name) ||
is_dns_stub_hostname(name) ||
is_dns_proxy_stub_hostname(name))
return false;
r = resolve_system_hostname(NULL, &first_label);
if (r < 0) {
log_warning_errno(r, "Failed to determine the hostname: %m");
return false;
}
return !streq(name, first_label);
}
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;
_cleanup_free_ char *idnafied = NULL;
bool needs_authentication = false;
unsigned n = 0;
uint64_t flags;
usec_t ts;
int r;
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);
if (dns_name_dot_suffixed(name) == 0 && single_label_nonsynthetic(name))
log_notice("(Note that search domains are not appended when --type= is specified. "
"Please specify fully qualified domain names, or remove --type= switch from invocation in order to request regular hostname resolution.)");
r = idna_candidate(name, &idnafied);
if (r < 0)
return r;
if (r > 0)
log_notice("(Note that IDNA translation is not applied when --type= is specified. "
"Please specify translated domain names — i.e. '%s' — when resolving raw records, or remove --type= switch from invocation in order to request regular hostname resolution.",
idnafied);
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_safe(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(r, "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(r, "Unknown DNS type %s: %m", 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;
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;
union in_addr_union a;
assert_cc(sizeof(int) == sizeof(int32_t));
r = sd_bus_message_read(reply, "i", &ifindex);
if (r < 0)
return bus_log_parse_error(r);
sd_bus_error_free(&error);
r = bus_message_read_in_addr_auto(reply, &error, &family, &a);
if (r < 0 && !sd_bus_error_has_name(&error, SD_BUS_ERROR_INVALID_ARGS))
return log_error_errno(r, "%s: systemd-resolved returned invalid result: %s", name, bus_error_message(&error, r));
r = sd_bus_message_exit_container(reply);
if (r < 0)
return bus_log_parse_error(r);
if (sd_bus_error_has_name(&error, SD_BUS_ERROR_INVALID_ARGS)) {
log_debug_errno(r, "%s: systemd-resolved returned invalid result, ignoring: %s", name, bus_error_message(&error, r));
continue;
}
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;
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_safe(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 **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 = ASSERT_PTR(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;
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_vertical();
if (!table)
return log_oom();
r = table_add_many(table,
TABLE_STRING, "Transactions",
TABLE_SET_COLOR, ansi_highlight(),
TABLE_SET_ALIGN_PERCENT, 0,
TABLE_EMPTY,
TABLE_FIELD, "Current Transactions",
TABLE_SET_ALIGN_PERCENT, 100,
TABLE_UINT64, n_current_transactions,
TABLE_SET_ALIGN_PERCENT, 100,
TABLE_FIELD, "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_FIELD, "Current Cache Size",
TABLE_SET_ALIGN_PERCENT, 100,
TABLE_UINT64, cache_size,
TABLE_FIELD, "Cache Hits",
TABLE_UINT64, n_cache_hit,
TABLE_FIELD, "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_FIELD, "Secure",
TABLE_SET_ALIGN_PERCENT, 100,
TABLE_UINT64, n_dnssec_secure,
TABLE_FIELD, "Insecure",
TABLE_UINT64, n_dnssec_insecure,
TABLE_FIELD, "Bogus",
TABLE_UINT64, n_dnssec_bogus,
TABLE_FIELD, "Indeterminate:",
TABLE_UINT64, n_dnssec_indeterminate);
if (r < 0)
return 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, /* read "ifindex" reply that also carries an interface index */
bool extended, /* read "extended" reply, i.e. with port number and server name */
bool only_global, /* suppress entries with an (non-loopback) ifindex set (i.e. which are specific to some interface) */
char **ret) {
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_free_ char *pretty = NULL;
union in_addr_union a;
const char *name = NULL;
int32_t ifindex = 0;
int family, r, k;
uint16_t port = 0;
assert(m);
assert(ret);
r = sd_bus_message_enter_container(
m,
'r',
with_ifindex ? (extended ? "iiayqs" : "iiay") :
(extended ? "iayqs" : "iay"));
if (r <= 0)
return r;
if (with_ifindex) {
r = sd_bus_message_read(m, "i", &ifindex);
if (r < 0)
return r;
}
k = bus_message_read_in_addr_auto(m, &error, &family, &a);
if (k < 0 && !sd_bus_error_has_name(&error, SD_BUS_ERROR_INVALID_ARGS))
return k;
if (extended) {
r = sd_bus_message_read(m, "q", &port);
if (r < 0)
return r;
r = sd_bus_message_read(m, "s", &name);
if (r < 0)
return r;
}
r = sd_bus_message_exit_container(m);
if (r < 0)
return r;
if (k < 0) {
log_debug("Invalid DNS server, ignoring: %s", bus_error_message(&error, k));
*ret = NULL;
return 1;
}
if (only_global && ifindex > 0 && ifindex != LOOPBACK_IFINDEX) {
/* This one has an (non-loopback) ifindex set, and we were told to suppress those. Hence do so. */
*ret = NULL;
return 1;
}
r = in_addr_port_ifindex_name_to_string(family, &a, port, ifindex, name, &pretty);
if (r < 0)
return r;
*ret = TAKE_PTR(pretty);
return 1;
}
static int map_link_dns_servers_internal(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata, bool extended) {
char ***l = ASSERT_PTR(userdata);
int r;
assert(bus);
assert(member);
assert(m);
r = sd_bus_message_enter_container(m, 'a', extended ? "(iayqs)" : "(iay)");
if (r < 0)
return r;
for (;;) {
_cleanup_free_ char *pretty = NULL;
r = read_dns_server_one(m, /* with_ifindex= */ false, extended, /* only_global= */ 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_dns_servers(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) {
return map_link_dns_servers_internal(bus, member, m, error, userdata, false);
}
static int map_link_dns_servers_ex(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) {
return map_link_dns_servers_internal(bus, member, m, error, userdata, true);
}
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, /* with_ifindex= */ false, /* extended= */ false, /* only_global= */ false, userdata);
}
static int map_link_current_dns_server_ex(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, /* with_ifindex= */ false, /* extended= */ true, /* only_global= */ 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 = ASSERT_PTR(userdata);
int r;
assert(bus);
assert(member);
assert(m);
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;
strv_sort(*l);
return 0;
}
static int status_print_strv_ifindex(int ifindex, const char *ifname, char **p) {
const unsigned indent = strlen("Global: "); /* Use the same indentation everywhere to make things nice */
int pos1, pos2;
if (ifname)
printf("%s%nLink %i (%s)%n%s:", ansi_highlight(), &pos1, ifindex, ifname, &pos2, ansi_normal());
else
printf("%s%nGlobal%n%s:", ansi_highlight(), &pos1, &pos2, ansi_normal());
size_t cols = columns(), position = pos2 - pos1 + 2;
STRV_FOREACH(i, p) {
size_t our_len = utf8_console_width(*i); /* This returns -1 on invalid utf-8 (which shouldn't happen).
* If that happens, we'll just print one item per line. */
if (position <= indent || size_add(size_add(position, 1), our_len) < cols) {
printf(" %s", *i);
position = size_add(size_add(position, 1), our_len);
} else {
printf("\n%*s%s", (int) indent, "", *i);
position = size_add(our_len, indent);
}
}
printf("\n");
return 0;
}
static int status_print_strv_global(char **p) {
return status_print_strv_ifindex(0, NULL, p);
}
typedef struct LinkInfo {
uint64_t scopes_mask;
const char *llmnr;
const char *mdns;
const char *dns_over_tls;
const char *dnssec;
char *current_dns;
char *current_dns_ex;
char **dns;
char **dns_ex;
char **domains;
char **ntas;
bool dnssec_supported;
bool default_route;
} LinkInfo;
typedef struct GlobalInfo {
char *current_dns;
char *current_dns_ex;
char **dns;
char **dns_ex;
char **fallback_dns;
char **fallback_dns_ex;
char **domains;
char **ntas;
const char *llmnr;
const char *mdns;
const char *dns_over_tls;
const char *dnssec;
const char *resolv_conf_mode;
bool dnssec_supported;
} GlobalInfo;
static void link_info_clear(LinkInfo *p) {
free(p->current_dns);
free(p->current_dns_ex);
strv_free(p->dns);
strv_free(p->dns_ex);
strv_free(p->domains);
strv_free(p->ntas);
}
static void global_info_clear(GlobalInfo *p) {
free(p->current_dns);
free(p->current_dns_ex);
strv_free(p->dns);
strv_free(p->dns_ex);
strv_free(p->fallback_dns);
strv_free(p->fallback_dns_ex);
strv_free(p->domains);
strv_free(p->ntas);
}
static int dump_list(Table *table, const char *field, char * const *l) {
int r;
if (strv_isempty(l))
return 0;
r = table_add_many(table,
TABLE_FIELD, field,
TABLE_STRV_WRAPPED, l);
if (r < 0)
return table_log_add_error(r);
return 0;
}
static int strv_extend_extended_bool(char ***strv, const char *name, const char *value) {
int r;
if (value) {
r = parse_boolean(value);
if (r >= 0)
return strv_extendf(strv, "%s%s", plus_minus(r), name);
}
return strv_extendf(strv, "%s=%s", name, value ?: "???");
}
static char** link_protocol_status(const LinkInfo *info) {
_cleanup_strv_free_ char **s = NULL;
if (strv_extendf(&s, "%sDefaultRoute", plus_minus(info->default_route)) < 0)
return NULL;
if (strv_extend_extended_bool(&s, "LLMNR", info->llmnr) < 0)
return NULL;
if (strv_extend_extended_bool(&s, "mDNS", info->mdns) < 0)
return NULL;
if (strv_extend_extended_bool(&s, "DNSOverTLS", info->dns_over_tls) < 0)
return NULL;
if (strv_extendf(&s, "DNSSEC=%s/%s",
info->dnssec ?: "???",
info->dnssec_supported ? "supported" : "unsupported") < 0)
return NULL;
return TAKE_PTR(s);
}
static char** global_protocol_status(const GlobalInfo *info) {
_cleanup_strv_free_ char **s = NULL;
if (strv_extend_extended_bool(&s, "LLMNR", info->llmnr) < 0)
return NULL;
if (strv_extend_extended_bool(&s, "mDNS", info->mdns) < 0)
return NULL;
if (strv_extend_extended_bool(&s, "DNSOverTLS", info->dns_over_tls) < 0)
return NULL;
if (strv_extendf(&s, "DNSSEC=%s/%s",
info->dnssec ?: "???",
info->dnssec_supported ? "supported" : "unsupported") < 0)
return NULL;
return TAKE_PTR(s);
}
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(LinkInfo, scopes_mask) },
{ "DNS", "a(iay)", map_link_dns_servers, offsetof(LinkInfo, dns) },
{ "DNSEx", "a(iayqs)", map_link_dns_servers_ex, offsetof(LinkInfo, dns_ex) },
{ "CurrentDNSServer", "(iay)", map_link_current_dns_server, offsetof(LinkInfo, current_dns) },
{ "CurrentDNSServerEx", "(iayqs)", map_link_current_dns_server_ex, offsetof(LinkInfo, current_dns_ex) },
{ "Domains", "a(sb)", map_link_domains, offsetof(LinkInfo, domains) },
{ "DefaultRoute", "b", NULL, offsetof(LinkInfo, default_route) },
{ "LLMNR", "s", NULL, offsetof(LinkInfo, llmnr) },
{ "MulticastDNS", "s", NULL, offsetof(LinkInfo, mdns) },
{ "DNSOverTLS", "s", NULL, offsetof(LinkInfo, dns_over_tls) },
{ "DNSSEC", "s", NULL, offsetof(LinkInfo, dnssec) },
{ "DNSSECNegativeTrustAnchors", "as", bus_map_strv_sort, offsetof(LinkInfo, ntas) },
{ "DNSSECSupported", "b", NULL, offsetof(LinkInfo, 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) LinkInfo link_info = {};
_cleanup_(table_unrefp) Table *table = NULL;
_cleanup_free_ char *p = NULL;
char ifi[DECIMAL_STR_MAX(int)], ifname[IF_NAMESIZE];
int r;
assert(bus);
assert(ifindex > 0);
if (!name) {
r = format_ifname(ifindex, ifname);
if (r < 0)
return log_error_errno(r, "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));
pager_open(arg_pager_flags);
if (mode == STATUS_DNS)
return status_print_strv_ifindex(ifindex, name, link_info.dns_ex ?: 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_vertical();
if (!table)
return log_oom();
r = table_add_many(table,
TABLE_FIELD, "Current Scopes",
TABLE_SET_MINIMUM_WIDTH, 19);
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);
_cleanup_strv_free_ char **pstatus = link_protocol_status(&link_info);
if (!pstatus)
return log_oom();
r = table_add_many(table,
TABLE_FIELD, "Protocols",
TABLE_STRV_WRAPPED, pstatus);
if (r < 0)
return table_log_add_error(r);
if (link_info.current_dns) {
r = table_add_many(table,
TABLE_FIELD, "Current DNS Server",
TABLE_STRING, link_info.current_dns_ex ?: link_info.current_dns);
if (r < 0)
return table_log_add_error(r);
}
r = dump_list(table, "DNS Servers", link_info.dns_ex ?: 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_internal(
sd_bus *bus,
const char *member,
sd_bus_message *m,
sd_bus_error *error,
void *userdata,
bool extended) {
char ***l = ASSERT_PTR(userdata);
int r;
assert(bus);
assert(member);
assert(m);
r = sd_bus_message_enter_container(m, 'a', extended ? "(iiayqs)" : "(iiay)");
if (r < 0)
return r;
for (;;) {
_cleanup_free_ char *pretty = NULL;
r = read_dns_server_one(m, /* with_ifindex= */ true, extended, /* only_global= */ 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_dns_servers(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) {
return map_global_dns_servers_internal(bus, member, m, error, userdata, /* extended= */ false);
}
static int map_global_dns_servers_ex(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) {
return map_global_dns_servers_internal(bus, member, m, error, userdata, /* extended= */ true);
}
static int map_global_current_dns_server(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) {
return read_dns_server_one(m, /* with_ifindex= */ true, /* extended= */ false, /* only_global= */ true, userdata);
}
static int map_global_current_dns_server_ex(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) {
return read_dns_server_one(m, /* with_ifindex= */ true, /* extended= */ true, /* only_global= */ 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 = ASSERT_PTR(userdata);
int r;
assert(bus);
assert(member);
assert(m);
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;
strv_sort(*l);
return 0;
}
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(GlobalInfo, dns) },
{ "DNSEx", "a(iiayqs)", map_global_dns_servers_ex, offsetof(GlobalInfo, dns_ex) },
{ "FallbackDNS", "a(iiay)", map_global_dns_servers, offsetof(GlobalInfo, fallback_dns) },
{ "FallbackDNSEx", "a(iiayqs)", map_global_dns_servers_ex, offsetof(GlobalInfo, fallback_dns_ex) },
{ "CurrentDNSServer", "(iiay)", map_global_current_dns_server, offsetof(GlobalInfo, current_dns) },
{ "CurrentDNSServerEx", "(iiayqs)", map_global_current_dns_server_ex, offsetof(GlobalInfo, current_dns_ex) },
{ "Domains", "a(isb)", map_global_domains, offsetof(GlobalInfo, domains) },
{ "DNSSECNegativeTrustAnchors", "as", bus_map_strv_sort, offsetof(GlobalInfo, ntas) },
{ "LLMNR", "s", NULL, offsetof(GlobalInfo, llmnr) },
{ "MulticastDNS", "s", NULL, offsetof(GlobalInfo, mdns) },
{ "DNSOverTLS", "s", NULL, offsetof(GlobalInfo, dns_over_tls) },
{ "DNSSEC", "s", NULL, offsetof(GlobalInfo, dnssec) },
{ "DNSSECSupported", "b", NULL, offsetof(GlobalInfo, dnssec_supported) },
{ "ResolvConfMode", "s", NULL, offsetof(GlobalInfo, resolv_conf_mode) },
{}
};
_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) GlobalInfo 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));
pager_open(arg_pager_flags);
if (mode == STATUS_DNS)
return status_print_strv_global(global_info.dns_ex ?: 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_vertical();
if (!table)
return log_oom();
_cleanup_strv_free_ char **pstatus = global_protocol_status(&global_info);
if (!pstatus)
return log_oom();
r = table_add_many(table,
TABLE_FIELD, "Protocols",
TABLE_SET_MINIMUM_WIDTH, 19,
TABLE_STRV_WRAPPED, pstatus);
if (r < 0)
return table_log_add_error(r);
if (global_info.resolv_conf_mode) {
r = table_add_many(table,
TABLE_FIELD, "resolv.conf mode",
TABLE_STRING, global_info.resolv_conf_mode);
if (r < 0)
return table_log_add_error(r);
}
if (global_info.current_dns) {
r = table_add_many(table,
TABLE_FIELD, "Current DNS Server",
TABLE_STRING, global_info.current_dns_ex ?: global_info.current_dns);
if (r < 0)
return table_log_add_error(r);
}
r = dump_list(table, "DNS Servers", global_info.dns_ex ?: global_info.dns);
if (r < 0)
return r;
r = dump_list(table, "Fallback DNS Servers", global_info.fallback_dns_ex ?: 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_set_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_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_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) {
bool empty_line = false;
STRV_FOREACH(ifname, argv + 1) {
int ifindex, q;
ifindex = rtnl_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, bool extended) {
_cleanup_(sd_bus_message_unrefp) sd_bus_message *req = NULL;
int r;
r = bus_message_new_method_call(bus, &req, locator, extended ? "SetLinkDNSEx" : "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', extended ? "(iayqs)" : "(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) {
_cleanup_free_ char *name = NULL;
struct in_addr_data data;
uint16_t port;
int ifindex;
r = in_addr_port_ifindex_name_from_string_auto(*p, &data.family, &data.address, &port, &ifindex, &name);
if (r < 0)
return log_error_errno(r, "Failed to parse DNS server address: %s", *p);
if (ifindex != 0 && ifindex != arg_ifindex)
return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Invalid ifindex: %i", ifindex);
r = sd_bus_message_open_container(req, 'r', extended ? "iayqs" : "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);
if (extended) {
r = sd_bus_message_append(req, "q", port);
if (r < 0)
return bus_log_create_error(r);
r = sd_bus_message_append(req, "s", name);
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);
r = sd_bus_call(bus, req, 0, error, NULL);
if (r < 0 && extended && sd_bus_error_has_name(error, SD_BUS_ERROR_UNKNOWN_METHOD)) {
sd_bus_error_free(error);
return call_dns(bus, dns, locator, error, false);
}
return r;
}
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 = ASSERT_PTR(userdata);
int r;
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, true);
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, true);
}
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;
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)
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
"Domain not valid: %s",
n);
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 = ASSERT_PTR(userdata);
int r;
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 = ASSERT_PTR(userdata);
int r, b;
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;
_cleanup_free_ char *global_llmnr_support_str = NULL;
ResolveSupport global_llmnr_support, llmnr_support;
sd_bus *bus = ASSERT_PTR(userdata);
int r;
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);
llmnr_support = resolve_support_from_string(argv[2]);
if (llmnr_support < 0)
return log_error_errno(llmnr_support, "Invalid LLMNR setting: %s", argv[2]);
r = bus_get_property_string(bus, bus_resolve_mgr, "LLMNR", &error, &global_llmnr_support_str);
if (r < 0)
return log_error_errno(r, "Failed to get the global LLMNR support state: %s", bus_error_message(&error, r));
global_llmnr_support = resolve_support_from_string(global_llmnr_support_str);
if (global_llmnr_support < 0)
return log_error_errno(global_llmnr_support, "Received invalid global LLMNR setting: %s", global_llmnr_support_str);
if (global_llmnr_support < llmnr_support)
log_warning("Setting LLMNR support level \"%s\" for \"%s\", but the global support level is \"%s\".",
argv[2], arg_ifname, global_llmnr_support_str);
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;
_cleanup_free_ char *global_mdns_support_str = NULL;
ResolveSupport global_mdns_support, mdns_support;
sd_bus *bus = ASSERT_PTR(userdata);
int r;
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);
mdns_support = resolve_support_from_string(argv[2]);
if (mdns_support < 0)
return log_error_errno(mdns_support, "Invalid mDNS setting: %s", argv[2]);
r = bus_get_property_string(bus, bus_resolve_mgr, "MulticastDNS", &error, &global_mdns_support_str);
if (r < 0)
return log_error_errno(r, "Failed to get the global mDNS support state: %s", bus_error_message(&error, r));
global_mdns_support = resolve_support_from_string(global_mdns_support_str);
if (global_mdns_support < 0)
return log_error_errno(global_mdns_support, "Received invalid global mDNS setting: %s", global_mdns_support_str);
if (global_mdns_support < mdns_support)
log_warning("Setting mDNS support level \"%s\" for \"%s\", but the global support level is \"%s\".",
argv[2], arg_ifname, global_mdns_support_str);
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 = ASSERT_PTR(userdata);
int r;
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 = ASSERT_PTR(userdata);
int r;
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 = ASSERT_PTR(userdata);
int r;
bool clear;
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)
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
"Domain not valid: %s",
*p);
}
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 = ASSERT_PTR(userdata);
int r;
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) {
sd_bus *bus = ASSERT_PTR(userdata);
assert(IN_SET(argc, 1, 2));
return verb_log_control_common(bus, "org.freedesktop.resolve1", argv[0], argc == 2 ? argv[1] : NULL);
}
static int monitor_rkey_from_json(JsonVariant *v, DnsResourceKey **ret_key) {
_cleanup_(dns_resource_key_unrefp) DnsResourceKey *key = NULL;
uint16_t type = 0, class = 0;
const char *name = NULL;
int r;
JsonDispatch dispatch_table[] = {
{ "class", JSON_VARIANT_INTEGER, json_dispatch_uint16, PTR_TO_SIZE(&class), JSON_MANDATORY },
{ "type", JSON_VARIANT_INTEGER, json_dispatch_uint16, PTR_TO_SIZE(&type), JSON_MANDATORY },
{ "name", JSON_VARIANT_STRING, json_dispatch_const_string, PTR_TO_SIZE(&name), JSON_MANDATORY },
{}
};
assert(v);
assert(ret_key);
r = json_dispatch(v, dispatch_table, NULL, 0, NULL);
if (r < 0)
return r;
key = dns_resource_key_new(class, type, name);
if (!key)
return -ENOMEM;
*ret_key = TAKE_PTR(key);
return 0;
}
static int print_question(char prefix, const char *color, JsonVariant *question) {
JsonVariant *q = NULL;
int r;
assert(color);
JSON_VARIANT_ARRAY_FOREACH(q, question) {
_cleanup_(dns_resource_key_unrefp) DnsResourceKey *key = NULL;
char buf[DNS_RESOURCE_KEY_STRING_MAX];
r = monitor_rkey_from_json(q, &key);
if (r < 0) {
log_warning_errno(r, "Received monitor message with invalid question key, ignoring: %m");
continue;
}
printf("%s%s %c%s: %s\n",
color,
special_glyph(SPECIAL_GLYPH_ARROW_RIGHT),
prefix,
ansi_normal(),
dns_resource_key_to_string(key, buf, sizeof(buf)));
}
return 0;
}
static int print_answer(JsonVariant *answer) {
JsonVariant *a;
int r;
JSON_VARIANT_ARRAY_FOREACH(a, answer) {
_cleanup_(dns_resource_record_unrefp) DnsResourceRecord *rr = NULL;
_cleanup_free_ void *d = NULL;
JsonVariant *jraw;
const char *s;
size_t l;
jraw = json_variant_by_key(a, "raw");
if (!jraw) {
log_warning("Received monitor answer lacking valid raw data, ignoring.");
continue;
}
r = json_variant_unbase64(jraw, &d, &l);
if (r < 0) {
log_warning_errno(r, "Failed to undo base64 encoding of monitor answer raw data, ignoring.");
continue;
}
r = dns_resource_record_new_from_raw(&rr, d, l);
if (r < 0) {
log_warning_errno(r, "Failed to parse monitor answer RR, ignoring: %m");
continue;
}
s = dns_resource_record_to_string(rr);
if (!s)
return log_oom();
printf("%s%s A%s: %s\n",
ansi_highlight_yellow(),
special_glyph(SPECIAL_GLYPH_ARROW_LEFT),
ansi_normal(),
s);
}
return 0;
}
static void monitor_query_dump(JsonVariant *v) {
_cleanup_(json_variant_unrefp) JsonVariant *question = NULL, *answer = NULL, *collected_questions = NULL;
int rcode = -1, error = 0, r;
const char *state = NULL;
assert(v);
JsonDispatch dispatch_table[] = {
{ "question", JSON_VARIANT_ARRAY, json_dispatch_variant, PTR_TO_SIZE(&question), JSON_MANDATORY },
{ "answer", JSON_VARIANT_ARRAY, json_dispatch_variant, PTR_TO_SIZE(&answer), 0 },
{ "collectedQuestions", JSON_VARIANT_ARRAY, json_dispatch_variant, PTR_TO_SIZE(&collected_questions), 0 },
{ "state", JSON_VARIANT_STRING, json_dispatch_const_string, PTR_TO_SIZE(&state), JSON_MANDATORY },
{ "rcode", JSON_VARIANT_INTEGER, json_dispatch_int, PTR_TO_SIZE(&rcode), 0 },
{ "errno", JSON_VARIANT_INTEGER, json_dispatch_int, PTR_TO_SIZE(&error), 0 },
{}
};
r = json_dispatch(v, dispatch_table, NULL, 0, NULL);
if (r < 0)
return (void) log_warning("Received malformed monitor message, ignoring.");
/* First show the current question */
print_question('Q', ansi_highlight_cyan(), question);
/* And then show the questions that led to this one in case this was a CNAME chain */
print_question('C', ansi_highlight_grey(), collected_questions);
printf("%s%s S%s: %s\n",
streq_ptr(state, "success") ? ansi_highlight_green() : ansi_highlight_red(),
special_glyph(SPECIAL_GLYPH_ARROW_LEFT),
ansi_normal(),
strna(streq_ptr(state, "errno") ? errno_to_name(error) :
streq_ptr(state, "rcode-failure") ? dns_rcode_to_string(rcode) :
state));
print_answer(answer);
}
static int monitor_reply(
Varlink *link,
JsonVariant *parameters,
const char *error_id,
VarlinkReplyFlags flags,
void *userdata) {
assert(link);
if (error_id) {
bool disconnect;
disconnect = streq(error_id, VARLINK_ERROR_DISCONNECTED);
if (disconnect)
log_info("Disconnected.");
else
log_error("Varlink error: %s", error_id);
(void) sd_event_exit(ASSERT_PTR(varlink_get_event(link)), disconnect ? EXIT_SUCCESS : EXIT_FAILURE);
return 0;
}
if (json_variant_by_key(parameters, "ready")) {
/* The first message coming in will just indicate that we are now subscribed. We let our
* caller know if they asked for it. Once the caller sees this they should know that we are
* not going to miss any queries anymore. */
(void) sd_notify(/* unset_environment=false */ false, "READY=1");
return 0;
}
if (arg_json_format_flags & JSON_FORMAT_OFF) {
monitor_query_dump(parameters);
printf("\n");
} else
json_variant_dump(parameters, arg_json_format_flags, NULL, NULL);
fflush(stdout);
return 0;
}
static int verb_monitor(int argc, char *argv[], void *userdata) {
_cleanup_(sd_event_unrefp) sd_event *event = NULL;
_cleanup_(varlink_unrefp) Varlink *vl = NULL;
int r, c;
r = sd_event_default(&event);
if (r < 0)
return log_error_errno(r, "Failed to get event loop: %m");
r = sd_event_set_signal_exit(event, true);
if (r < 0)
return log_error_errno(r, "Failed to enable exit on SIGINT/SIGTERM: %m");
r = varlink_connect_address(&vl, "/run/systemd/resolve/io.systemd.Resolve.Monitor");
if (r < 0)
return log_error_errno(r, "Failed to connect to query monitoring service /run/systemd/resolve/io.systemd.Resolve.Monitor: %m");
r = varlink_set_relative_timeout(vl, USEC_INFINITY); /* We want the monitor to run basically forever */
if (r < 0)
return log_error_errno(r, "Failed to set varlink time-out: %m");
r = varlink_attach_event(vl, event, SD_EVENT_PRIORITY_NORMAL);
if (r < 0)
return log_error_errno(r, "Failed to attach varlink connection to event loop: %m");
r = varlink_bind_reply(vl, monitor_reply);
if (r < 0)
return log_error_errno(r, "Failed to bind reply callback to varlink connection: %m");
r = varlink_observe(vl, "io.systemd.Resolve.Monitor.SubscribeQueryResults", NULL);
if (r < 0)
return log_error_errno(r, "Failed to issue SubscribeQueryResults() varlink call: %m");
r = sd_event_loop(event);
if (r < 0)
return log_error_errno(r, "Failed to run event loop: %m");
r = sd_event_get_exit_code(event, &c);
if (r < 0)
return log_error_errno(r, "Failed to get exit code: %m");
return c;
}
static void help_protocol_types(void) {
if (arg_legend)
puts("Known protocol types:");
puts("dns\n"
"llmnr\n"
"llmnr-ipv4\n"
"llmnr-ipv6\n"
"mdns\n"
"mdns-ipv4\n"
"mdns-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"
" monitor Monitor DNS queries\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"
" log-level [LEVEL] Get/set logging threshold for systemd-resolved\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"
" --validate=BOOL Allow DNSSEC validation (default: yes)\n"
" --synthesize=BOOL Allow synthetic response (default: yes)\n"
" --cache=BOOL Allow response from cache (default: yes)\n"
" --zone=BOOL Allow response from locally registered mDNS/LLMNR\n"
" records (default: yes)\n"
" --trust-anchor=BOOL Allow response from local trust anchor (default:\n"
" yes)\n"
" --network=BOOL Allow response from network (default: yes)\n"
" --search=BOOL Use search domains for single-label names (default:\n"
" yes)\n"
" --raw[=payload|packet] Dump the answer as binary data\n"
" --legend=BOOL Print headers and additional info (default: yes)\n"
" --json=MODE Output as JSON\n"
" -j Same as --json=pretty on tty, --json=short\n"
" otherwise\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)
return log_error_errno(r, "Failed to parse RR record type %s: %m", optarg);
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)
return log_error_errno(r, "Failed to parse RR record class %s: %m", optarg);
arg_class = (uint16_t) r;
assert((int) arg_class == r);
break;
case ARG_LEGEND:
r = parse_boolean_argument("--legend=", optarg, &arg_legend);
if (r < 0)
return 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_argument("--cname=", optarg, NULL);
if (r < 0)
return r;
SET_FLAG(arg_flags, SD_RESOLVED_NO_CNAME, r == 0);
break;
case ARG_SERVICE_ADDRESS:
r = parse_boolean_argument("--service-address=", optarg, NULL);
if (r < 0)
return r;
SET_FLAG(arg_flags, SD_RESOLVED_NO_ADDRESS, r == 0);
break;
case ARG_SERVICE_TXT:
r = parse_boolean_argument("--service-txt=", optarg, NULL);
if (r < 0)
return r;
SET_FLAG(arg_flags, SD_RESOLVED_NO_TXT, r == 0);
break;
case ARG_SEARCH:
r = parse_boolean_argument("--search=", optarg, NULL);
if (r < 0)
return r;
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();
}
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_VALIDATE,
ARG_SYNTHESIZE,
ARG_CACHE,
ARG_ZONE,
ARG_TRUST_ANCHOR,
ARG_NETWORK,
ARG_SERVICE_ADDRESS,
ARG_SERVICE_TXT,
ARG_RAW,
ARG_SEARCH,
ARG_NO_PAGER,
ARG_JSON,
};
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 },
{ "validate", required_argument, NULL, ARG_VALIDATE },
{ "synthesize", required_argument, NULL, ARG_SYNTHESIZE },
{ "cache", required_argument, NULL, ARG_CACHE },
{ "zone", required_argument, NULL, ARG_ZONE },
{ "trust-anchor", required_argument, NULL, ARG_TRUST_ANCHOR },
{ "network", required_argument, NULL, ARG_NETWORK },
{ "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 },
{ "json", required_argument, NULL, ARG_JSON },
{}
};
int c, r;
assert(argc >= 0);
assert(argv);
while ((c = getopt_long(argc, argv, "h46i:t:c:p:j", 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)
return log_error_errno(r, "Failed to parse RR record type %s: %m", optarg);
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)
return log_error_errno(r, "Failed to parse RR record class %s: %m", optarg);
arg_class = (uint16_t) r;
assert((int) arg_class == r);
break;
case ARG_LEGEND:
r = parse_boolean_argument("--legend=", optarg, &arg_legend);
if (r < 0)
return 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_argument("--cname=", optarg, NULL);
if (r < 0)
return r;
SET_FLAG(arg_flags, SD_RESOLVED_NO_CNAME, r == 0);
break;
case ARG_VALIDATE:
r = parse_boolean_argument("--validate=", optarg, NULL);
if (r < 0)
return r;
SET_FLAG(arg_flags, SD_RESOLVED_NO_VALIDATE, r == 0);
break;
case ARG_SYNTHESIZE:
r = parse_boolean_argument("--synthesize=", optarg, NULL);
if (r < 0)
return r;
SET_FLAG(arg_flags, SD_RESOLVED_NO_SYNTHESIZE, r == 0);
break;
case ARG_CACHE:
r = parse_boolean_argument("--cache=", optarg, NULL);
if (r < 0)
return r;
SET_FLAG(arg_flags, SD_RESOLVED_NO_CACHE, r == 0);
break;
case ARG_ZONE:
r = parse_boolean_argument("--zone=", optarg, NULL);
if (r < 0)
return r;
SET_FLAG(arg_flags, SD_RESOLVED_NO_ZONE, r == 0);
break;
case ARG_TRUST_ANCHOR:
r = parse_boolean_argument("--trust-anchor=", optarg, NULL);
if (r < 0)
return r;
SET_FLAG(arg_flags, SD_RESOLVED_NO_TRUST_ANCHOR, r == 0);
break;
case ARG_NETWORK:
r = parse_boolean_argument("--network=", optarg, NULL);
if (r < 0)
return r;
SET_FLAG(arg_flags, SD_RESOLVED_NO_NETWORK, r == 0);
break;
case ARG_SERVICE_ADDRESS:
r = parse_boolean_argument("--service-address=", optarg, NULL);
if (r < 0)
return r;
SET_FLAG(arg_flags, SD_RESOLVED_NO_ADDRESS, r == 0);
break;
case ARG_SERVICE_TXT:
r = parse_boolean_argument("--service-txt=", optarg, NULL);
if (r < 0)
return r;
SET_FLAG(arg_flags, SD_RESOLVED_NO_TXT, r == 0);
break;
case ARG_SEARCH:
r = parse_boolean_argument("--search=", optarg, NULL);
if (r < 0)
return r;
SET_FLAG(arg_flags, SD_RESOLVED_NO_SEARCH, r == 0);
break;
case ARG_NO_PAGER:
arg_pager_flags |= PAGER_DISABLE;
break;
case ARG_JSON:
r = parse_json_argument(optarg, &arg_json_format_flags);
if (r <= 0)
return r;
break;
case 'j':
arg_json_format_flags = JSON_FORMAT_PRETTY_AUTO|JSON_FORMAT_COLOR_AUTO;
break;
case '?':
return -EINVAL;
default:
assert_not_reached();
}
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 },
{ "monitor", VERB_ANY, 1, 0, verb_monitor },
{}
};
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();
}
return 0;
}
static int run(int argc, char **argv) {
_cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
bool compat = false;
int r;
setlocale(LC_ALL, "");
log_setup();
if (invoked_as(argv, "resolvconf")) {
compat = true;
r = resolvconf_parse_argv(argc, argv);
} else if (invoked_as(argv, "systemd-resolve")) {
compat = true;
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 (compat)
return compat_main(argc, argv, bus);
return native_main(argc, argv, bus);
}
DEFINE_MAIN_FUNCTION(run);