/***
This file is part of systemd.
Copyright 2014 Zbigniew Jędrzejewski-Szmek
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see .
***/
#include
#include
#include "sd-bus.h"
#include "sd-netlink.h"
#include "af-list.h"
#include "alloc-util.h"
#include "bus-error.h"
#include "bus-util.h"
#include "escape.h"
#include "gcrypt-util.h"
#include "in-addr-util.h"
#include "netlink-util.h"
#include "pager.h"
#include "parse-util.h"
#include "resolved-def.h"
#include "resolved-dns-packet.h"
#include "strv.h"
#include "terminal-util.h"
#define DNS_CALL_TIMEOUT_USEC (45*USEC_PER_SEC)
static int arg_family = AF_UNSPEC;
static int arg_ifindex = 0;
static uint16_t arg_type = 0;
static uint16_t arg_class = 0;
static bool arg_legend = true;
static uint64_t arg_flags = 0;
static bool arg_no_pager = false;
typedef enum ServiceFamily {
SERVICE_FAMILY_TCP,
SERVICE_FAMILY_UDP,
SERVICE_FAMILY_SCTP,
_SERVICE_FAMILY_INVALID = -1,
} ServiceFamily;
static ServiceFamily arg_service_family = SERVICE_FAMILY_TCP;
typedef enum RawType {
RAW_NONE,
RAW_PAYLOAD,
RAW_PACKET,
} RawType;
static RawType arg_raw = RAW_NONE;
static enum {
MODE_RESOLVE_HOST,
MODE_RESOLVE_RECORD,
MODE_RESOLVE_SERVICE,
MODE_RESOLVE_OPENPGP,
MODE_RESOLVE_TLSA,
MODE_STATISTICS,
MODE_RESET_STATISTICS,
MODE_FLUSH_CACHES,
MODE_STATUS,
} arg_mode = MODE_RESOLVE_HOST;
static ServiceFamily service_family_from_string(const char *s) {
if (s == NULL || streq(s, "tcp"))
return SERVICE_FAMILY_TCP;
if (streq(s, "udp"))
return SERVICE_FAMILY_UDP;
if (streq(s, "sctp"))
return SERVICE_FAMILY_SCTP;
return _SERVICE_FAMILY_INVALID;
}
static const char* service_family_to_string(ServiceFamily service) {
switch(service) {
case SERVICE_FAMILY_TCP:
return "_tcp";
case SERVICE_FAMILY_UDP:
return "_udp";
case SERVICE_FAMILY_SCTP:
return "_sctp";
default:
assert_not_reached("invalid service");
}
}
static void print_source(uint64_t flags, usec_t rtt) {
char rtt_str[FORMAT_TIMESTAMP_MAX];
if (!arg_legend)
return;
if (flags == 0)
return;
fputs("\n-- Information acquired via", stdout);
if (flags != 0)
printf(" protocol%s%s%s%s%s",
flags & SD_RESOLVED_DNS ? " DNS" :"",
flags & SD_RESOLVED_LLMNR_IPV4 ? " LLMNR/IPv4" : "",
flags & SD_RESOLVED_LLMNR_IPV6 ? " LLMNR/IPv6" : "",
flags & SD_RESOLVED_MDNS_IPV4 ? "mDNS/IPv4" : "",
flags & SD_RESOLVED_MDNS_IPV6 ? "mDNS/IPv6" : "");
assert_se(format_timespan(rtt_str, sizeof(rtt_str), rtt, 100));
printf(" in %s", rtt_str);
fputc('.', stdout);
fputc('\n', stdout);
printf("-- Data is authenticated: %s\n", yes_no(flags & SD_RESOLVED_AUTHENTICATED));
}
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;
char ifname[IF_NAMESIZE] = "";
unsigned c = 0;
int r;
uint64_t flags;
usec_t ts;
assert(name);
if (arg_ifindex > 0 && !if_indextoname(arg_ifindex, ifname))
return log_error_errno(errno, "Failed to resolve interface name for index %i: %m", arg_ifindex);
log_debug("Resolving %s (family %s, interface %s).", name, af_to_name(arg_family) ?: "*", isempty(ifname) ? "*" : ifname);
r = sd_bus_message_new_method_call(
bus,
&req,
"org.freedesktop.resolve1",
"/org/freedesktop/resolve1",
"org.freedesktop.resolve1.Manager",
"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, DNS_CALL_TIMEOUT_USEC, &error, &reply);
if (r < 0)
return log_error_errno(r, "%s: resolve call failed: %s", name, bus_error_message(&error, r));
ts = now(CLOCK_MONOTONIC) - ts;
r = sd_bus_message_enter_container(reply, 'a', "(iiay)");
if (r < 0)
return bus_log_parse_error(r);
while ((r = sd_bus_message_enter_container(reply, 'r', "iiay")) > 0) {
_cleanup_free_ char *pretty = NULL;
int ifindex, family;
const void *a;
size_t sz;
assert_cc(sizeof(int) == sizeof(int32_t));
r = sd_bus_message_read(reply, "ii", &ifindex, &family);
if (r < 0)
return bus_log_parse_error(r);
r = sd_bus_message_read_array(reply, 'y', &a, &sz);
if (r < 0)
return bus_log_parse_error(r);
r = sd_bus_message_exit_container(reply);
if (r < 0)
return bus_log_parse_error(r);
if (!IN_SET(family, AF_INET, AF_INET6)) {
log_debug("%s: skipping entry with family %d (%s)", name, family, af_to_name(family) ?: "unknown");
continue;
}
if (sz != FAMILY_ADDRESS_SIZE(family)) {
log_error("%s: systemd-resolved returned address of invalid size %zu for family %s", name, sz, af_to_name(family) ?: "unknown");
return -EINVAL;
}
ifname[0] = 0;
if (ifindex > 0 && !if_indextoname(ifindex, ifname))
log_warning_errno(errno, "Failed to resolve interface name for index %i: %m", ifindex);
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);
printf("%*s%s %s%s%s\n",
(int) strlen(name), c == 0 ? name : "", c == 0 ? ":" : " ",
pretty,
isempty(ifname) ? "" : "%", ifname);
c++;
}
if (r < 0)
return bus_log_parse_error(r);
r = sd_bus_message_exit_container(reply);
if (r < 0)
return bus_log_parse_error(r);
r = sd_bus_message_read(reply, "st", &canonical, &flags);
if (r < 0)
return bus_log_parse_error(r);
if (!streq(name, canonical))
printf("%*s%s (%s)\n",
(int) strlen(name), c == 0 ? name : "", c == 0 ? ":" : " ",
canonical);
if (c == 0) {
log_error("%s: no addresses found", name);
return -ESRCH;
}
print_source(flags, ts);
return 0;
}
static int resolve_address(sd_bus *bus, int family, const union in_addr_union *address, int ifindex) {
_cleanup_(sd_bus_message_unrefp) sd_bus_message *req = NULL, *reply = NULL;
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_free_ char *pretty = NULL;
char ifname[IF_NAMESIZE] = "";
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();
if (ifindex > 0 && !if_indextoname(ifindex, ifname))
return log_error_errno(errno, "Failed to resolve interface name for index %i: %m", ifindex);
log_debug("Resolving %s%s%s.", pretty, isempty(ifname) ? "" : "%", ifname);
r = sd_bus_message_new_method_call(
bus,
&req,
"org.freedesktop.resolve1",
"/org/freedesktop/resolve1",
"org.freedesktop.resolve1.Manager",
"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, DNS_CALL_TIMEOUT_USEC, &error, &reply);
if (r < 0) {
log_error("%s: resolve call failed: %s", pretty, bus_error_message(&error, r));
return 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;
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;
ifname[0] = 0;
if (ifindex > 0 && !if_indextoname(ifindex, ifname))
log_warning_errno(errno, "Failed to resolve interface name for index %i: %m", ifindex);
printf("%*s%*s%*s%s %s\n",
(int) strlen(pretty), c == 0 ? pretty : "",
isempty(ifname) ? 0 : 1, c > 0 || isempty(ifname) ? "" : "%",
(int) strlen(ifname), c == 0 ? ifname : "",
c == 0 ? ":" : " ",
n);
c++;
}
if (r < 0)
return bus_log_parse_error(r);
r = sd_bus_message_exit_container(reply);
if (r < 0)
return bus_log_parse_error(r);
r = sd_bus_message_read(reply, "t", &flags);
if (r < 0)
return bus_log_parse_error(r);
if (c == 0) {
log_error("%s: no names found", pretty);
return -ESRCH;
}
print_source(flags, ts);
return 0;
}
static int output_rr_packet(const void *d, size_t l, int ifindex) {
_cleanup_(dns_resource_record_unrefp) DnsResourceRecord *rr = NULL;
_cleanup_(dns_packet_unrefp) DnsPacket *p = NULL;
int r;
char ifname[IF_NAMESIZE] = "";
r = dns_packet_new(&p, DNS_PROTOCOL_DNS, 0);
if (r < 0)
return log_oom();
p->refuse_compression = true;
r = dns_packet_append_blob(p, d, l, NULL);
if (r < 0)
return log_oom();
r = dns_packet_read_rr(p, &rr, NULL, NULL);
if (r < 0)
return log_error_errno(r, "Failed to parse RR: %m");
if (arg_raw == RAW_PAYLOAD) {
void *data;
ssize_t k;
k = dns_resource_record_payload(rr, &data);
if (k < 0)
return log_error_errno(k, "Cannot dump RR: %m");
fwrite(data, 1, k, stdout);
} else {
const char *s;
s = dns_resource_record_to_string(rr);
if (!s)
return log_oom();
if (ifindex > 0 && !if_indextoname(ifindex, ifname))
log_warning_errno(errno, "Failed to resolve interface name for index %i: %m", ifindex);
printf("%s%s%s\n", s, isempty(ifname) ? "" : " # interface ", ifname);
}
return 0;
}
static int resolve_record(sd_bus *bus, const char *name, uint16_t class, uint16_t type, bool warn_missing) {
_cleanup_(sd_bus_message_unrefp) sd_bus_message *req = NULL, *reply = NULL;
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
char ifname[IF_NAMESIZE] = "";
unsigned n = 0;
uint64_t flags;
int r;
usec_t ts;
bool needs_authentication = false;
assert(name);
if (arg_ifindex > 0 && !if_indextoname(arg_ifindex, ifname))
return log_error_errno(errno, "Failed to resolve interface name for index %i: %m", arg_ifindex);
log_debug("Resolving %s %s %s (interface %s).", name, dns_class_to_string(class), dns_type_to_string(type), isempty(ifname) ? "*" : ifname);
r = sd_bus_message_new_method_call(
bus,
&req,
"org.freedesktop.resolve1",
"/org/freedesktop/resolve1",
"org.freedesktop.resolve1.Manager",
"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, DNS_CALL_TIMEOUT_USEC, &error, &reply);
if (r < 0) {
if (warn_missing || r != -ENXIO)
log_error("%s: resolve call failed: %s", name, bus_error_message(&error, r));
return r;
}
ts = now(CLOCK_MONOTONIC) - ts;
r = sd_bus_message_enter_container(reply, 'a', "(iqqay)");
if (r < 0)
return bus_log_parse_error(r);
while ((r = sd_bus_message_enter_container(reply, 'r', "iqqay")) > 0) {
uint16_t c, t;
int ifindex;
const void *d;
size_t l;
assert_cc(sizeof(int) == sizeof(int32_t));
r = sd_bus_message_read(reply, "iqq", &ifindex, &c, &t);
if (r < 0)
return bus_log_parse_error(r);
r = sd_bus_message_read_array(reply, 'y', &d, &l);
if (r < 0)
return bus_log_parse_error(r);
r = sd_bus_message_exit_container(reply);
if (r < 0)
return bus_log_parse_error(r);
if (arg_raw == RAW_PACKET) {
uint64_t u64 = htole64(l);
fwrite(&u64, sizeof(u64), 1, stdout);
fwrite(d, 1, l, stdout);
} else {
r = output_rr_packet(d, l, ifindex);
if (r < 0)
return r;
}
if (dns_type_needs_authentication(t))
needs_authentication = true;
n++;
}
if (r < 0)
return bus_log_parse_error(r);
r = sd_bus_message_exit_container(reply);
if (r < 0)
return bus_log_parse_error(r);
r = sd_bus_message_read(reply, "t", &flags);
if (r < 0)
return bus_log_parse_error(r);
if (n == 0) {
if (warn_missing)
log_error("%s: no records found", name);
return -ESRCH;
}
print_source(flags, ts);
if ((flags & SD_RESOLVED_AUTHENTICATED) == 0 && needs_authentication) {
fflush(stdout);
fprintf(stderr, "\n%s"
"WARNING: The resources shown contain cryptographic key data which could not be\n"
" authenticated. It is not suitable to authenticate any communication.\n"
" This is usually indication that DNSSEC authentication was not enabled\n"
" or is not available for the selected protocol or DNS servers.%s\n",
ansi_highlight_red(),
ansi_normal());
}
return 0;
}
static int resolve_rfc4501(sd_bus *bus, const char *name) {
uint16_t type = 0, class = 0;
const char *p, *q, *n;
int r;
assert(bus);
assert(name);
assert(startswith(name, "dns:"));
/* Parse RFC 4501 dns: URIs */
p = name + 4;
if (p[0] == '/') {
const char *e;
if (p[1] != '/')
goto invalid;
e = strchr(p + 2, '/');
if (!e)
goto invalid;
if (e != p + 2)
log_warning("DNS authority specification not supported; ignoring specified authority.");
p = e + 1;
}
q = strchr(p, '?');
if (q) {
n = strndupa(p, q - p);
q++;
for (;;) {
const char *f;
f = startswith_no_case(q, "class=");
if (f) {
_cleanup_free_ char *t = NULL;
const char *e;
if (class != 0) {
log_error("DNS class specified twice.");
return -EINVAL;
}
e = strchrnul(f, ';');
t = strndup(f, e - f);
if (!t)
return log_oom();
r = dns_class_from_string(t);
if (r < 0) {
log_error("Unknown DNS class %s.", t);
return -EINVAL;
}
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) {
log_error("DNS type specified twice.");
return -EINVAL;
}
e = strchrnul(f, ';');
t = strndup(f, e - f);
if (!t)
return log_oom();
r = dns_type_from_string(t);
if (r < 0) {
log_error("Unknown DNS type %s.", t);
return -EINVAL;
}
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:
log_error("Invalid DNS URI: %s", name);
return -EINVAL;
}
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;
char ifname[IF_NAMESIZE] = "";
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 (arg_ifindex > 0 && !if_indextoname(arg_ifindex, ifname))
return log_error_errno(errno, "Failed to resolve interface name for index %i: %m", arg_ifindex);
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(ifname) ? "*" : ifname);
else if (type)
log_debug("Resolving service type %s of %s (family %s, interface %s).", type, domain, af_to_name(arg_family) ?: "*", isempty(ifname) ? "*" : ifname);
else
log_debug("Resolving service type %s (family %s, interface %s).", domain, af_to_name(arg_family) ?: "*", isempty(ifname) ? "*" : ifname);
r = sd_bus_message_new_method_call(
bus,
&req,
"org.freedesktop.resolve1",
"/org/freedesktop/resolve1",
"org.freedesktop.resolve1.Manager",
"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, DNS_CALL_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;
const void *a;
assert_cc(sizeof(int) == sizeof(int32_t));
r = sd_bus_message_read(reply, "ii", &ifindex, &family);
if (r < 0)
return bus_log_parse_error(r);
r = sd_bus_message_read_array(reply, 'y', &a, &sz);
if (r < 0)
return bus_log_parse_error(r);
r = sd_bus_message_exit_container(reply);
if (r < 0)
return bus_log_parse_error(r);
if (!IN_SET(family, AF_INET, AF_INET6)) {
log_debug("%s: skipping entry with family %d (%s)", name, family, af_to_name(family) ?: "unknown");
continue;
}
if (sz != FAMILY_ADDRESS_SIZE(family)) {
log_error("%s: systemd-resolved returned address of invalid size %zu for family %s", name, sz, af_to_name(family) ?: "unknown");
return -EINVAL;
}
ifname[0] = 0;
if (ifindex > 0 && !if_indextoname(ifindex, ifname))
log_warning_errno(errno, "Failed to resolve interface name for index %i: %m", ifindex);
r = in_addr_to_string(family, a, &pretty);
if (r < 0)
return log_error_errno(r, "Failed to print address for %s: %m", name);
printf("%*s%s%s%s\n", (int) indent, "", pretty, isempty(ifname) ? "" : "%s", ifname);
}
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 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) {
log_error("Address does not contain '@': \"%s\"", address);
return -EINVAL;
} else if (domain == address || domain[1] == '\0') {
log_error("Address starts or ends with '@': \"%s\"", address);
return -EINVAL;
}
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 = NULL;
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 resolve_tlsa(sd_bus *bus, const char *address) {
const char *port;
uint16_t port_num = 443;
_cleanup_free_ char *full = NULL;
int r;
assert(bus);
assert(address);
port = strrchr(address, ':');
if (port) {
r = parse_ip_port(port + 1, &port_num);
if (r < 0)
return log_error_errno(r, "Invalid port \"%s\".", port + 1);
address = strndupa(address, port - address);
}
r = asprintf(&full, "_%u.%s.%s",
port_num,
service_family_to_string(arg_service_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 int show_statistics(sd_bus *bus) {
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
uint64_t n_current_transactions, n_total_transactions,
cache_size, n_cache_hit, n_cache_miss,
n_dnssec_secure, n_dnssec_insecure, n_dnssec_bogus, n_dnssec_indeterminate;
int r, dnssec_supported;
assert(bus);
r = sd_bus_get_property_trivial(bus,
"org.freedesktop.resolve1",
"/org/freedesktop/resolve1",
"org.freedesktop.resolve1.Manager",
"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 = sd_bus_get_property(bus,
"org.freedesktop.resolve1",
"/org/freedesktop/resolve1",
"org.freedesktop.resolve1.Manager",
"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);
printf("%sTransactions%s\n"
"Current Transactions: %" PRIu64 "\n"
" Total Transactions: %" PRIu64 "\n",
ansi_highlight(),
ansi_normal(),
n_current_transactions,
n_total_transactions);
reply = sd_bus_message_unref(reply);
r = sd_bus_get_property(bus,
"org.freedesktop.resolve1",
"/org/freedesktop/resolve1",
"org.freedesktop.resolve1.Manager",
"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);
printf("\n%sCache%s\n"
" Current Cache Size: %" PRIu64 "\n"
" Cache Hits: %" PRIu64 "\n"
" Cache Misses: %" PRIu64 "\n",
ansi_highlight(),
ansi_normal(),
cache_size,
n_cache_hit,
n_cache_miss);
reply = sd_bus_message_unref(reply);
r = sd_bus_get_property(bus,
"org.freedesktop.resolve1",
"/org/freedesktop/resolve1",
"org.freedesktop.resolve1.Manager",
"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);
printf("\n%sDNSSEC Verdicts%s\n"
" Secure: %" PRIu64 "\n"
" Insecure: %" PRIu64 "\n"
" Bogus: %" PRIu64 "\n"
" Indeterminate: %" PRIu64 "\n",
ansi_highlight(),
ansi_normal(),
n_dnssec_secure,
n_dnssec_insecure,
n_dnssec_bogus,
n_dnssec_indeterminate);
return 0;
}
static int reset_statistics(sd_bus *bus) {
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
int r;
r = sd_bus_call_method(bus,
"org.freedesktop.resolve1",
"/org/freedesktop/resolve1",
"org.freedesktop.resolve1.Manager",
"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(sd_bus *bus) {
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
int r;
r = sd_bus_call_method(bus,
"org.freedesktop.resolve1",
"/org/freedesktop/resolve1",
"org.freedesktop.resolve1.Manager",
"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 map_link_dns_servers(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) {
char ***l = userdata;
int r;
assert(bus);
assert(member);
assert(m);
assert(l);
r = sd_bus_message_enter_container(m, 'a', "(iay)");
if (r < 0)
return r;
for (;;) {
const void *a;
char *pretty;
int family;
size_t sz;
r = sd_bus_message_enter_container(m, 'r', "iay");
if (r < 0)
return r;
if (r == 0)
break;
r = sd_bus_message_read(m, "i", &family);
if (r < 0)
return r;
r = sd_bus_message_read_array(m, 'y', &a, &sz);
if (r < 0)
return r;
r = sd_bus_message_exit_container(m);
if (r < 0)
return r;
if (!IN_SET(family, AF_INET, AF_INET6)) {
log_debug("Unexpected family, ignoring.");
continue;
}
if (sz != FAMILY_ADDRESS_SIZE(family)) {
log_debug("Address size mismatch, ignoring.");
continue;
}
r = in_addr_to_string(family, a, &pretty);
if (r < 0)
return r;
r = strv_consume(l, pretty);
if (r < 0)
return r;
}
r = sd_bus_message_exit_container(m);
if (r < 0)
return r;
return 0;
}
static int map_link_domains(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) {
char ***l = userdata;
int r;
assert(bus);
assert(member);
assert(m);
assert(l);
r = sd_bus_message_enter_container(m, 'a', "(sb)");
if (r < 0)
return r;
for (;;) {
const char *domain;
int route_only;
char *pretty;
r = sd_bus_message_read(m, "(sb)", &domain, &route_only);
if (r < 0)
return r;
if (r == 0)
break;
if (route_only)
pretty = strappend("~", domain);
else
pretty = strdup(domain);
if (!pretty)
return -ENOMEM;
r = strv_consume(l, pretty);
if (r < 0)
return r;
}
r = sd_bus_message_exit_container(m);
if (r < 0)
return r;
return 0;
}
static int status_ifindex(sd_bus *bus, int ifindex, const char *name, bool *empty_line) {
struct link_info {
uint64_t scopes_mask;
char *llmnr;
char *mdns;
char *dnssec;
char **dns;
char **domains;
char **ntas;
int dnssec_supported;
} link_info = {};
static const struct bus_properties_map property_map[] = {
{ "ScopesMask", "t", NULL, offsetof(struct link_info, scopes_mask) },
{ "DNS", "a(iay)", map_link_dns_servers, offsetof(struct link_info, dns) },
{ "Domains", "a(sb)", map_link_domains, offsetof(struct link_info, domains) },
{ "LLMNR", "s", NULL, offsetof(struct link_info, llmnr) },
{ "MulticastDNS", "s", NULL, offsetof(struct link_info, mdns) },
{ "DNSSEC", "s", NULL, offsetof(struct link_info, dnssec) },
{ "DNSSECNegativeTrustAnchors", "as", NULL, offsetof(struct link_info, ntas) },
{ "DNSSECSupported", "b", NULL, offsetof(struct link_info, dnssec_supported) },
{}
};
_cleanup_free_ char *ifi = NULL, *p = NULL;
char ifname[IF_NAMESIZE] = "";
char **i;
int r;
assert(bus);
assert(ifindex > 0);
assert(empty_line);
if (!name) {
if (!if_indextoname(ifindex, ifname))
return log_error_errno(errno, "Failed to resolve interface name for %i: %m", ifindex);
name = ifname;
}
if (asprintf(&ifi, "%i", ifindex) < 0)
return log_oom();
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,
&link_info);
if (r < 0) {
log_error_errno(r, "Failed to get link data for %i: %m", ifindex);
goto finish;
}
pager_open(arg_no_pager, false);
if (*empty_line)
fputc('\n', stdout);
printf("%sLink %i (%s)%s\n",
ansi_highlight(), ifindex, name, ansi_normal());
if (link_info.scopes_mask == 0)
printf(" Current Scopes: none\n");
else
printf(" Current Scopes:%s%s%s%s%s\n",
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" : "");
printf(" LLMNR setting: %s\n"
"MulticastDNS setting: %s\n"
" DNSSEC setting: %s\n"
" DNSSEC supported: %s\n",
strna(link_info.llmnr),
strna(link_info.mdns),
strna(link_info.dnssec),
yes_no(link_info.dnssec_supported));
STRV_FOREACH(i, link_info.dns) {
printf(" %s %s\n",
i == link_info.dns ? "DNS Servers:" : " ",
*i);
}
STRV_FOREACH(i, link_info.domains) {
printf(" %s %s\n",
i == link_info.domains ? "DNS Domain:" : " ",
*i);
}
STRV_FOREACH(i, link_info.ntas) {
printf(" %s %s\n",
i == link_info.ntas ? "DNSSEC NTA:" : " ",
*i);
}
*empty_line = true;
r = 0;
finish:
strv_free(link_info.dns);
strv_free(link_info.domains);
free(link_info.llmnr);
free(link_info.mdns);
free(link_info.dnssec);
strv_free(link_info.ntas);
return r;
}
static int map_global_dns_servers(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) {
char ***l = userdata;
int r;
assert(bus);
assert(member);
assert(m);
assert(l);
r = sd_bus_message_enter_container(m, 'a', "(iiay)");
if (r < 0)
return r;
for (;;) {
const void *a;
char *pretty;
int family, ifindex;
size_t sz;
r = sd_bus_message_enter_container(m, 'r', "iiay");
if (r < 0)
return r;
if (r == 0)
break;
r = sd_bus_message_read(m, "ii", &ifindex, &family);
if (r < 0)
return r;
r = sd_bus_message_read_array(m, 'y', &a, &sz);
if (r < 0)
return r;
r = sd_bus_message_exit_container(m);
if (r < 0)
return r;
if (ifindex != 0) /* only show the global ones here */
continue;
if (!IN_SET(family, AF_INET, AF_INET6)) {
log_debug("Unexpected family, ignoring.");
continue;
}
if (sz != FAMILY_ADDRESS_SIZE(family)) {
log_debug("Address size mismatch, ignoring.");
continue;
}
r = in_addr_to_string(family, a, &pretty);
if (r < 0)
return r;
r = strv_consume(l, pretty);
if (r < 0)
return r;
}
r = sd_bus_message_exit_container(m);
if (r < 0)
return r;
return 0;
}
static int map_global_domains(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) {
char ***l = userdata;
int r;
assert(bus);
assert(member);
assert(m);
assert(l);
r = sd_bus_message_enter_container(m, 'a', "(isb)");
if (r < 0)
return r;
for (;;) {
const char *domain;
int route_only, ifindex;
char *pretty;
r = sd_bus_message_read(m, "(isb)", &ifindex, &domain, &route_only);
if (r < 0)
return r;
if (r == 0)
break;
if (ifindex != 0) /* only show the global ones here */
continue;
if (route_only)
pretty = strappend("~", domain);
else
pretty = strdup(domain);
if (!pretty)
return -ENOMEM;
r = strv_consume(l, pretty);
if (r < 0)
return r;
}
r = sd_bus_message_exit_container(m);
if (r < 0)
return r;
return 0;
}
static int status_global(sd_bus *bus, bool *empty_line) {
struct global_info {
char **dns;
char **domains;
char **ntas;
} global_info = {};
static const struct bus_properties_map property_map[] = {
{ "DNS", "a(iiay)", map_global_dns_servers, offsetof(struct global_info, dns) },
{ "Domains", "a(isb)", map_global_domains, offsetof(struct global_info, domains) },
{ "DNSSECNegativeTrustAnchors", "as", NULL, offsetof(struct global_info, ntas) },
{}
};
char **i;
int r;
assert(bus);
assert(empty_line);
r = bus_map_all_properties(bus,
"org.freedesktop.resolve1",
"/org/freedesktop/resolve1",
property_map,
&global_info);
if (r < 0) {
log_error_errno(r, "Failed to get global data: %m");
goto finish;
}
if (strv_isempty(global_info.dns) && strv_isempty(global_info.domains) && strv_isempty(global_info.ntas)) {
r = 0;
goto finish;
}
pager_open(arg_no_pager, false);
printf("%sGlobal%s\n", ansi_highlight(), ansi_normal());
STRV_FOREACH(i, global_info.dns) {
printf(" %s %s\n",
i == global_info.dns ? "DNS Servers:" : " ",
*i);
}
STRV_FOREACH(i, global_info.domains) {
printf(" %s %s\n",
i == global_info.domains ? "DNS Domain:" : " ",
*i);
}
strv_sort(global_info.ntas);
STRV_FOREACH(i, global_info.ntas) {
printf(" %s %s\n",
i == global_info.ntas ? "DNSSEC NTA:" : " ",
*i);
}
*empty_line = true;
r = 0;
finish:
strv_free(global_info.dns);
strv_free(global_info.domains);
strv_free(global_info.ntas);
return r;
}
static int status_all(sd_bus *bus) {
_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL, *reply = NULL;
_cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL;
sd_netlink_message *i;
bool empty_line = false;
int r;
assert(bus);
r = status_global(bus, &empty_line);
if (r < 0)
return r;
r = sd_netlink_open(&rtnl);
if (r < 0)
return log_error_errno(r, "Failed to connect to netlink: %m");
r = sd_rtnl_message_new_link(rtnl, &req, RTM_GETLINK, 0);
if (r < 0)
return rtnl_log_create_error(r);
r = sd_netlink_message_request_dump(req, true);
if (r < 0)
return rtnl_log_create_error(r);
r = sd_netlink_call(rtnl, req, 0, &reply);
if (r < 0)
return log_error_errno(r, "Failed to enumerate links: %m");
r = 0;
for (i = reply; i; i = sd_netlink_message_next(i)) {
const char *name;
int ifindex, q;
uint16_t type;
q = sd_netlink_message_get_type(i, &type);
if (q < 0)
return rtnl_log_parse_error(q);
if (type != RTM_NEWLINK)
continue;
q = sd_rtnl_message_link_get_ifindex(i, &ifindex);
if (q < 0)
return rtnl_log_parse_error(q);
if (ifindex == LOOPBACK_IFINDEX)
continue;
q = sd_netlink_message_read_string(i, IFLA_IFNAME, &name);
if (q < 0)
return rtnl_log_parse_error(q);
q = status_ifindex(bus, ifindex, name, &empty_line);
if (q < 0 && r >= 0)
r = q;
}
return r;
}
static void help_protocol_types(void) {
if (arg_legend)
puts("Known protocol types:");
puts("dns\nllmnr\nllmnr-ipv4\nllmnr-ipv6");
}
static void help_dns_types(void) {
const char *t;
int i;
if (arg_legend)
puts("Known DNS RR types:");
for (i = 0; i < _DNS_TYPE_MAX; i++) {
t = dns_type_to_string(i);
if (t)
puts(t);
}
}
static void help_dns_classes(void) {
const char *t;
int i;
if (arg_legend)
puts("Known DNS RR classes:");
for (i = 0; i < _DNS_CLASS_MAX; i++) {
t = dns_class_to_string(i);
if (t)
puts(t);
}
}
static void help(void) {
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"
"Resolve domain names, IPv4 and IPv6 addresses, DNS records, and services.\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"
, program_invocation_short_name);
}
static int 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_NO_PAGER,
};
static const struct option options[] = {
{ "help", no_argument, NULL, 'h' },
{ "version", no_argument, NULL, ARG_VERSION },
{ "type", required_argument, NULL, 't' },
{ "class", required_argument, NULL, 'c' },
{ "legend", required_argument, NULL, ARG_LEGEND },
{ "interface", required_argument, NULL, 'i' },
{ "protocol", required_argument, NULL, 'p' },
{ "cname", required_argument, NULL, ARG_CNAME },
{ "service", 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 },
{ "no-pager", no_argument, NULL, ARG_NO_PAGER },
{}
};
int c, r;
assert(argc >= 0);
assert(argv);
while ((c = getopt_long(argc, argv, "h46i:t:c:p:", options, NULL)) >= 0)
switch(c) {
case 'h':
help();
return 0; /* done */;
case ARG_VERSION:
return version();
case '4':
arg_family = AF_INET;
break;
case '6':
arg_family = AF_INET6;
break;
case 'i': {
int ifi;
if (parse_ifindex(optarg, &ifi) >= 0)
arg_ifindex = ifi;
else {
ifi = if_nametoindex(optarg);
if (ifi <= 0)
return log_error_errno(errno, "Unknown interface %s: %m", optarg);
arg_ifindex = ifi;
}
break;
}
case 't':
if (streq(optarg, "help")) {
help_dns_types();
return 0;
}
r = dns_type_from_string(optarg);
if (r < 0) {
log_error("Failed to parse RR record type %s", optarg);
return r;
}
arg_type = (uint16_t) r;
assert((int) arg_type == r);
arg_mode = MODE_RESOLVE_RECORD;
break;
case 'c':
if (streq(optarg, "help")) {
help_dns_classes();
return 0;
}
r = dns_class_from_string(optarg);
if (r < 0) {
log_error("Failed to parse RR record class %s", optarg);
return r;
}
arg_class = (uint16_t) r;
assert((int) arg_class == r);
break;
case ARG_LEGEND:
r = parse_boolean(optarg);
if (r < 0)
return log_error_errno(r, "Failed to parse --legend= argument");
arg_legend = r;
break;
case 'p':
if (streq(optarg, "help")) {
help_protocol_types();
return 0;
} else if (streq(optarg, "dns"))
arg_flags |= SD_RESOLVED_DNS;
else if (streq(optarg, "llmnr"))
arg_flags |= SD_RESOLVED_LLMNR;
else if (streq(optarg, "llmnr-ipv4"))
arg_flags |= SD_RESOLVED_LLMNR_IPV4;
else if (streq(optarg, "llmnr-ipv6"))
arg_flags |= SD_RESOLVED_LLMNR_IPV6;
else {
log_error("Unknown protocol specifier: %s", optarg);
return -EINVAL;
}
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;
arg_service_family = service_family_from_string(optarg);
if (arg_service_family < 0) {
log_error("Unknown service family \"%s\".", optarg);
return -EINVAL;
}
break;
case ARG_RAW:
if (on_tty()) {
log_error("Refusing to write binary data to tty.");
return -ENOTTY;
}
if (optarg == NULL || streq(optarg, "payload"))
arg_raw = RAW_PAYLOAD;
else if (streq(optarg, "packet"))
arg_raw = RAW_PACKET;
else {
log_error("Unknown --raw specifier \"%s\".", optarg);
return -EINVAL;
}
arg_legend = false;
break;
case ARG_CNAME:
r = parse_boolean(optarg);
if (r < 0)
return log_error_errno(r, "Failed to parse --cname= argument.");
SET_FLAG(arg_flags, SD_RESOLVED_NO_CNAME, r == 0);
break;
case ARG_SERVICE_ADDRESS:
r = parse_boolean(optarg);
if (r < 0)
return log_error_errno(r, "Failed to parse --service-address= argument.");
SET_FLAG(arg_flags, SD_RESOLVED_NO_ADDRESS, r == 0);
break;
case ARG_SERVICE_TXT:
r = parse_boolean(optarg);
if (r < 0)
return log_error_errno(r, "Failed to parse --service-txt= argument.");
SET_FLAG(arg_flags, SD_RESOLVED_NO_TXT, r == 0);
break;
case ARG_SEARCH:
r = parse_boolean(optarg);
if (r < 0)
return log_error_errno(r, "Failed to parse --search argument.");
SET_FLAG(arg_flags, SD_RESOLVED_NO_SEARCH, r == 0);
break;
case ARG_STATISTICS:
arg_mode = MODE_STATISTICS;
break;
case ARG_RESET_STATISTICS:
arg_mode = MODE_RESET_STATISTICS;
break;
case ARG_FLUSH_CACHES:
arg_mode = MODE_FLUSH_CACHES;
break;
case ARG_STATUS:
arg_mode = MODE_STATUS;
break;
case ARG_NO_PAGER:
arg_no_pager = true;
break;
case '?':
return -EINVAL;
default:
assert_not_reached("Unhandled option");
}
if (arg_type == 0 && arg_class != 0) {
log_error("--class= may only be used in conjunction with --type=.");
return -EINVAL;
}
if (arg_type != 0 && arg_mode == MODE_RESOLVE_SERVICE) {
log_error("--service and --type= may not be combined.");
return -EINVAL;
}
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 */;
}
int main(int argc, char **argv) {
_cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
int r;
log_parse_environment();
log_open();
r = parse_argv(argc, argv);
if (r <= 0)
goto finish;
r = sd_bus_open_system(&bus);
if (r < 0) {
log_error_errno(r, "sd_bus_open_system: %m");
goto finish;
}
switch (arg_mode) {
case MODE_RESOLVE_HOST:
if (optind >= argc) {
log_error("No arguments passed.");
r = -EINVAL;
goto finish;
}
while (argv[optind]) {
int family, ifindex, k;
union in_addr_union a;
if (startswith(argv[optind], "dns:"))
k = resolve_rfc4501(bus, argv[optind]);
else {
k = in_addr_ifindex_from_string_auto(argv[optind], &family, &a, &ifindex);
if (k >= 0)
k = resolve_address(bus, family, &a, ifindex);
else
k = resolve_host(bus, argv[optind]);
}
if (r == 0)
r = k;
optind++;
}
break;
case MODE_RESOLVE_RECORD:
if (optind >= argc) {
log_error("No arguments passed.");
r = -EINVAL;
goto finish;
}
while (argv[optind]) {
int k;
k = resolve_record(bus, argv[optind], arg_class, arg_type, true);
if (r == 0)
r = k;
optind++;
}
break;
case MODE_RESOLVE_SERVICE:
if (argc < optind + 1) {
log_error("Domain specification required.");
r = -EINVAL;
goto finish;
} else if (argc == optind + 1)
r = resolve_service(bus, NULL, NULL, argv[optind]);
else if (argc == optind + 2)
r = resolve_service(bus, NULL, argv[optind], argv[optind+1]);
else if (argc == optind + 3)
r = resolve_service(bus, argv[optind], argv[optind+1], argv[optind+2]);
else {
log_error("Too many arguments.");
r = -EINVAL;
goto finish;
}
break;
case MODE_RESOLVE_OPENPGP:
if (argc < optind + 1) {
log_error("E-mail address required.");
r = -EINVAL;
goto finish;
}
r = 0;
while (optind < argc) {
int k;
k = resolve_openpgp(bus, argv[optind++]);
if (k < 0)
r = k;
}
break;
case MODE_RESOLVE_TLSA:
if (argc < optind + 1) {
log_error("Domain name required.");
r = -EINVAL;
goto finish;
}
r = 0;
while (optind < argc) {
int k;
k = resolve_tlsa(bus, argv[optind++]);
if (k < 0)
r = k;
}
break;
case MODE_STATISTICS:
if (argc > optind) {
log_error("Too many arguments.");
r = -EINVAL;
goto finish;
}
r = show_statistics(bus);
break;
case MODE_RESET_STATISTICS:
if (argc > optind) {
log_error("Too many arguments.");
r = -EINVAL;
goto finish;
}
r = reset_statistics(bus);
break;
case MODE_FLUSH_CACHES:
if (argc > optind) {
log_error("Too many arguments.");
r = -EINVAL;
goto finish;
}
r = flush_caches(bus);
break;
case MODE_STATUS:
if (argc > optind) {
char **ifname;
bool empty_line = false;
r = 0;
STRV_FOREACH(ifname, argv + optind) {
int ifindex, q;
q = parse_ifindex(argv[optind], &ifindex);
if (q < 0) {
ifindex = if_nametoindex(argv[optind]);
if (ifindex <= 0) {
log_error_errno(errno, "Failed to resolve interface name: %s", argv[optind]);
continue;
}
}
q = status_ifindex(bus, ifindex, NULL, &empty_line);
if (q < 0 && r >= 0)
r = q;
}
} else
r = status_all(bus);
break;
}
finish:
pager_close();
return r == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
}