2026 lines
70 KiB
C
2026 lines
70 KiB
C
/***
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This file is part of systemd.
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Copyright 2014 Zbigniew Jędrzejewski-Szmek
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <getopt.h>
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#include <net/if.h>
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#include "sd-bus.h"
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#include "sd-netlink.h"
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#include "af-list.h"
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#include "alloc-util.h"
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#include "bus-error.h"
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#include "bus-util.h"
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#include "escape.h"
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#include "gcrypt-util.h"
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#include "in-addr-util.h"
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#include "netlink-util.h"
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#include "pager.h"
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#include "parse-util.h"
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#include "resolved-def.h"
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#include "resolved-dns-packet.h"
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#include "strv.h"
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#include "terminal-util.h"
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#define DNS_CALL_TIMEOUT_USEC (45*USEC_PER_SEC)
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static int arg_family = AF_UNSPEC;
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static int arg_ifindex = 0;
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static uint16_t arg_type = 0;
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static uint16_t arg_class = 0;
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static bool arg_legend = true;
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static uint64_t arg_flags = 0;
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static bool arg_no_pager = false;
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typedef enum ServiceFamily {
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SERVICE_FAMILY_TCP,
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SERVICE_FAMILY_UDP,
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SERVICE_FAMILY_SCTP,
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_SERVICE_FAMILY_INVALID = -1,
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} ServiceFamily;
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static ServiceFamily arg_service_family = SERVICE_FAMILY_TCP;
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typedef enum RawType {
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RAW_NONE,
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RAW_PAYLOAD,
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RAW_PACKET,
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} RawType;
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static RawType arg_raw = RAW_NONE;
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static enum {
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MODE_RESOLVE_HOST,
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MODE_RESOLVE_RECORD,
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MODE_RESOLVE_SERVICE,
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MODE_RESOLVE_OPENPGP,
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MODE_RESOLVE_TLSA,
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MODE_STATISTICS,
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MODE_RESET_STATISTICS,
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MODE_FLUSH_CACHES,
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MODE_STATUS,
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} arg_mode = MODE_RESOLVE_HOST;
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static ServiceFamily service_family_from_string(const char *s) {
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if (s == NULL || streq(s, "tcp"))
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return SERVICE_FAMILY_TCP;
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if (streq(s, "udp"))
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return SERVICE_FAMILY_UDP;
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if (streq(s, "sctp"))
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return SERVICE_FAMILY_SCTP;
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return _SERVICE_FAMILY_INVALID;
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}
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static const char* service_family_to_string(ServiceFamily service) {
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switch(service) {
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case SERVICE_FAMILY_TCP:
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return "_tcp";
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case SERVICE_FAMILY_UDP:
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return "_udp";
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case SERVICE_FAMILY_SCTP:
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return "_sctp";
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default:
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assert_not_reached("invalid service");
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}
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}
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static void print_source(uint64_t flags, usec_t rtt) {
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char rtt_str[FORMAT_TIMESTAMP_MAX];
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if (!arg_legend)
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return;
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if (flags == 0)
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return;
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fputs("\n-- Information acquired via", stdout);
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if (flags != 0)
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printf(" protocol%s%s%s%s%s",
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flags & SD_RESOLVED_DNS ? " DNS" :"",
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flags & SD_RESOLVED_LLMNR_IPV4 ? " LLMNR/IPv4" : "",
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flags & SD_RESOLVED_LLMNR_IPV6 ? " LLMNR/IPv6" : "",
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flags & SD_RESOLVED_MDNS_IPV4 ? "mDNS/IPv4" : "",
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flags & SD_RESOLVED_MDNS_IPV6 ? "mDNS/IPv6" : "");
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assert_se(format_timespan(rtt_str, sizeof(rtt_str), rtt, 100));
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printf(" in %s", rtt_str);
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fputc('.', stdout);
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fputc('\n', stdout);
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printf("-- Data is authenticated: %s\n", yes_no(flags & SD_RESOLVED_AUTHENTICATED));
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}
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static int resolve_host(sd_bus *bus, const char *name) {
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_cleanup_(sd_bus_message_unrefp) sd_bus_message *req = NULL, *reply = NULL;
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_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
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const char *canonical = NULL;
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char ifname[IF_NAMESIZE] = "";
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unsigned c = 0;
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int r;
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uint64_t flags;
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usec_t ts;
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assert(name);
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if (arg_ifindex > 0 && !if_indextoname(arg_ifindex, ifname))
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return log_error_errno(errno, "Failed to resolve interface name for index %i: %m", arg_ifindex);
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log_debug("Resolving %s (family %s, interface %s).", name, af_to_name(arg_family) ?: "*", isempty(ifname) ? "*" : ifname);
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r = sd_bus_message_new_method_call(
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bus,
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&req,
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"org.freedesktop.resolve1",
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"/org/freedesktop/resolve1",
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"org.freedesktop.resolve1.Manager",
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"ResolveHostname");
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if (r < 0)
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return bus_log_create_error(r);
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r = sd_bus_message_append(req, "isit", arg_ifindex, name, arg_family, arg_flags);
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if (r < 0)
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return bus_log_create_error(r);
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ts = now(CLOCK_MONOTONIC);
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r = sd_bus_call(bus, req, DNS_CALL_TIMEOUT_USEC, &error, &reply);
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if (r < 0)
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return log_error_errno(r, "%s: resolve call failed: %s", name, bus_error_message(&error, r));
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ts = now(CLOCK_MONOTONIC) - ts;
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r = sd_bus_message_enter_container(reply, 'a', "(iiay)");
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if (r < 0)
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return bus_log_parse_error(r);
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while ((r = sd_bus_message_enter_container(reply, 'r', "iiay")) > 0) {
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_cleanup_free_ char *pretty = NULL;
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int ifindex, family;
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const void *a;
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size_t sz;
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assert_cc(sizeof(int) == sizeof(int32_t));
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r = sd_bus_message_read(reply, "ii", &ifindex, &family);
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if (r < 0)
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return bus_log_parse_error(r);
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r = sd_bus_message_read_array(reply, 'y', &a, &sz);
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if (r < 0)
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return bus_log_parse_error(r);
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r = sd_bus_message_exit_container(reply);
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if (r < 0)
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return bus_log_parse_error(r);
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if (!IN_SET(family, AF_INET, AF_INET6)) {
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log_debug("%s: skipping entry with family %d (%s)", name, family, af_to_name(family) ?: "unknown");
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continue;
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}
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if (sz != FAMILY_ADDRESS_SIZE(family)) {
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log_error("%s: systemd-resolved returned address of invalid size %zu for family %s", name, sz, af_to_name(family) ?: "unknown");
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return -EINVAL;
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}
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ifname[0] = 0;
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if (ifindex > 0 && !if_indextoname(ifindex, ifname))
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log_warning_errno(errno, "Failed to resolve interface name for index %i: %m", ifindex);
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r = in_addr_ifindex_to_string(family, a, ifindex, &pretty);
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if (r < 0)
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return log_error_errno(r, "Failed to print address for %s: %m", name);
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printf("%*s%s %s%s%s\n",
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(int) strlen(name), c == 0 ? name : "", c == 0 ? ":" : " ",
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pretty,
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isempty(ifname) ? "" : "%", ifname);
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c++;
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}
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if (r < 0)
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return bus_log_parse_error(r);
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r = sd_bus_message_exit_container(reply);
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if (r < 0)
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return bus_log_parse_error(r);
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r = sd_bus_message_read(reply, "st", &canonical, &flags);
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if (r < 0)
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return bus_log_parse_error(r);
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if (!streq(name, canonical))
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printf("%*s%s (%s)\n",
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(int) strlen(name), c == 0 ? name : "", c == 0 ? ":" : " ",
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canonical);
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if (c == 0) {
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log_error("%s: no addresses found", name);
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return -ESRCH;
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}
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print_source(flags, ts);
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return 0;
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}
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static int resolve_address(sd_bus *bus, int family, const union in_addr_union *address, int ifindex) {
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_cleanup_(sd_bus_message_unrefp) sd_bus_message *req = NULL, *reply = NULL;
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_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
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_cleanup_free_ char *pretty = NULL;
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char ifname[IF_NAMESIZE] = "";
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uint64_t flags;
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unsigned c = 0;
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usec_t ts;
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int r;
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assert(bus);
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assert(IN_SET(family, AF_INET, AF_INET6));
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assert(address);
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if (ifindex <= 0)
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ifindex = arg_ifindex;
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r = in_addr_ifindex_to_string(family, address, ifindex, &pretty);
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if (r < 0)
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return log_oom();
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if (ifindex > 0 && !if_indextoname(ifindex, ifname))
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return log_error_errno(errno, "Failed to resolve interface name for index %i: %m", ifindex);
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log_debug("Resolving %s%s%s.", pretty, isempty(ifname) ? "" : "%", ifname);
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r = sd_bus_message_new_method_call(
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bus,
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&req,
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"org.freedesktop.resolve1",
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"/org/freedesktop/resolve1",
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"org.freedesktop.resolve1.Manager",
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"ResolveAddress");
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if (r < 0)
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return bus_log_create_error(r);
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r = sd_bus_message_append(req, "ii", ifindex, family);
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if (r < 0)
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return bus_log_create_error(r);
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r = sd_bus_message_append_array(req, 'y', address, FAMILY_ADDRESS_SIZE(family));
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if (r < 0)
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return bus_log_create_error(r);
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r = sd_bus_message_append(req, "t", arg_flags);
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if (r < 0)
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return bus_log_create_error(r);
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ts = now(CLOCK_MONOTONIC);
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r = sd_bus_call(bus, req, DNS_CALL_TIMEOUT_USEC, &error, &reply);
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if (r < 0) {
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log_error("%s: resolve call failed: %s", pretty, bus_error_message(&error, r));
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return r;
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}
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ts = now(CLOCK_MONOTONIC) - ts;
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r = sd_bus_message_enter_container(reply, 'a', "(is)");
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if (r < 0)
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return bus_log_create_error(r);
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while ((r = sd_bus_message_enter_container(reply, 'r', "is")) > 0) {
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const char *n;
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assert_cc(sizeof(int) == sizeof(int32_t));
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r = sd_bus_message_read(reply, "is", &ifindex, &n);
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if (r < 0)
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return r;
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r = sd_bus_message_exit_container(reply);
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if (r < 0)
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return r;
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ifname[0] = 0;
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if (ifindex > 0 && !if_indextoname(ifindex, ifname))
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log_warning_errno(errno, "Failed to resolve interface name for index %i: %m", ifindex);
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printf("%*s%*s%*s%s %s\n",
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(int) strlen(pretty), c == 0 ? pretty : "",
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isempty(ifname) ? 0 : 1, c > 0 || isempty(ifname) ? "" : "%",
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(int) strlen(ifname), c == 0 ? ifname : "",
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c == 0 ? ":" : " ",
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n);
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c++;
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}
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if (r < 0)
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return bus_log_parse_error(r);
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r = sd_bus_message_exit_container(reply);
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if (r < 0)
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return bus_log_parse_error(r);
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r = sd_bus_message_read(reply, "t", &flags);
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if (r < 0)
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return bus_log_parse_error(r);
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if (c == 0) {
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log_error("%s: no names found", pretty);
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return -ESRCH;
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}
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print_source(flags, ts);
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return 0;
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}
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static int output_rr_packet(const void *d, size_t l, int ifindex) {
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_cleanup_(dns_resource_record_unrefp) DnsResourceRecord *rr = NULL;
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_cleanup_(dns_packet_unrefp) DnsPacket *p = NULL;
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int r;
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char ifname[IF_NAMESIZE] = "";
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r = dns_packet_new(&p, DNS_PROTOCOL_DNS, 0);
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if (r < 0)
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return log_oom();
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p->refuse_compression = true;
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r = dns_packet_append_blob(p, d, l, NULL);
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if (r < 0)
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return log_oom();
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r = dns_packet_read_rr(p, &rr, NULL, NULL);
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if (r < 0)
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return log_error_errno(r, "Failed to parse RR: %m");
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if (arg_raw == RAW_PAYLOAD) {
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void *data;
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ssize_t k;
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k = dns_resource_record_payload(rr, &data);
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if (k < 0)
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return log_error_errno(k, "Cannot dump RR: %m");
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fwrite(data, 1, k, stdout);
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} else {
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const char *s;
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s = dns_resource_record_to_string(rr);
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if (!s)
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return log_oom();
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if (ifindex > 0 && !if_indextoname(ifindex, ifname))
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log_warning_errno(errno, "Failed to resolve interface name for index %i: %m", ifindex);
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printf("%s%s%s\n", s, isempty(ifname) ? "" : " # interface ", ifname);
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}
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return 0;
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}
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static int resolve_record(sd_bus *bus, const char *name, uint16_t class, uint16_t type, bool warn_missing) {
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_cleanup_(sd_bus_message_unrefp) sd_bus_message *req = NULL, *reply = NULL;
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_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
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char ifname[IF_NAMESIZE] = "";
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unsigned n = 0;
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uint64_t flags;
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int r;
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usec_t ts;
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bool needs_authentication = false;
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assert(name);
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if (arg_ifindex > 0 && !if_indextoname(arg_ifindex, ifname))
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return log_error_errno(errno, "Failed to resolve interface name for index %i: %m", arg_ifindex);
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log_debug("Resolving %s %s %s (interface %s).", name, dns_class_to_string(class), dns_type_to_string(type), isempty(ifname) ? "*" : ifname);
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r = sd_bus_message_new_method_call(
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bus,
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&req,
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"org.freedesktop.resolve1",
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"/org/freedesktop/resolve1",
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"org.freedesktop.resolve1.Manager",
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"ResolveRecord");
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if (r < 0)
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return bus_log_create_error(r);
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r = sd_bus_message_append(req, "isqqt", arg_ifindex, name, class, type, arg_flags);
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if (r < 0)
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return bus_log_create_error(r);
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ts = now(CLOCK_MONOTONIC);
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r = sd_bus_call(bus, req, DNS_CALL_TIMEOUT_USEC, &error, &reply);
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if (r < 0) {
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if (warn_missing || r != -ENXIO)
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log_error("%s: resolve call failed: %s", name, bus_error_message(&error, r));
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return r;
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}
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ts = now(CLOCK_MONOTONIC) - ts;
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r = sd_bus_message_enter_container(reply, 'a', "(iqqay)");
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if (r < 0)
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return bus_log_parse_error(r);
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while ((r = sd_bus_message_enter_container(reply, 'r', "iqqay")) > 0) {
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uint16_t c, t;
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int ifindex;
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const void *d;
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size_t l;
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assert_cc(sizeof(int) == sizeof(int32_t));
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r = sd_bus_message_read(reply, "iqq", &ifindex, &c, &t);
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if (r < 0)
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return bus_log_parse_error(r);
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r = sd_bus_message_read_array(reply, 'y', &d, &l);
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if (r < 0)
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return bus_log_parse_error(r);
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r = sd_bus_message_exit_container(reply);
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if (r < 0)
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return bus_log_parse_error(r);
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|
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if (arg_raw == RAW_PACKET) {
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uint64_t u64 = htole64(l);
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fwrite(&u64, sizeof(u64), 1, stdout);
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fwrite(d, 1, l, stdout);
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} else {
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r = output_rr_packet(d, l, ifindex);
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if (r < 0)
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return r;
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}
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|
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if (dns_type_needs_authentication(t))
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needs_authentication = true;
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n++;
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}
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if (r < 0)
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return bus_log_parse_error(r);
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|
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r = sd_bus_message_exit_container(reply);
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if (r < 0)
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return bus_log_parse_error(r);
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r = sd_bus_message_read(reply, "t", &flags);
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if (r < 0)
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return bus_log_parse_error(r);
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if (n == 0) {
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if (warn_missing)
|
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log_error("%s: no records found", name);
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return -ESRCH;
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|
}
|
|
|
|
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;
|
|
}
|