943 lines
33 KiB
C
943 lines
33 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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/***
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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 "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 "in-addr-util.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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#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 int 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_resolve_service = false;
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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",
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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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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_to_string(family, a, &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_to_string(family, address, &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 parse_address(const char *s, int *family, union in_addr_union *address, int *ifindex) {
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const char *percent, *a;
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int ifi = 0;
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int r;
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percent = strchr(s, '%');
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if (percent) {
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if (parse_ifindex(percent+1, &ifi) < 0) {
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ifi = if_nametoindex(percent+1);
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if (ifi <= 0)
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return -EINVAL;
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}
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a = strndupa(s, percent - s);
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} else
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a = s;
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r = in_addr_from_string_auto(a, family, address);
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if (r < 0)
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return r;
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*ifindex = ifi;
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return 0;
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}
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static int resolve_record(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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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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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(arg_class), dns_type_to_string(arg_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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assert((uint16_t) arg_type == arg_type);
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r = sd_bus_message_append(req, "isqqt", arg_ifindex, name, arg_class, arg_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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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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_cleanup_(dns_resource_record_unrefp) DnsResourceRecord *rr = NULL;
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_cleanup_(dns_packet_unrefp) DnsPacket *p = NULL;
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_cleanup_free_ char *s = NULL;
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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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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);
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if (r < 0) {
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log_error("Failed to parse RR.");
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return r;
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}
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r = dns_resource_record_to_string(rr, &s);
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if (r < 0) {
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log_error("Failed to format RR.");
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return r;
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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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printf("%s%s%s\n", s, isempty(ifname) ? "" : " # interface ", ifname);
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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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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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log_error("%s: no records 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_service(sd_bus *bus, const char *name, const char *type, const char *domain) {
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const char *canonical_name, *canonical_type, *canonical_domain;
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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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size_t indent, sz;
|
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uint64_t flags;
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const char *p;
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unsigned c;
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usec_t ts;
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int r;
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assert(bus);
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assert(domain);
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if (isempty(name))
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name = NULL;
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if (isempty(type))
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type = NULL;
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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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|
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if (name)
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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);
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else if (type)
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log_debug("Resolving service type %s of %s (family %s, interface %s).", type, domain, af_to_name(arg_family) ?: "*", isempty(ifname) ? "*" : ifname);
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else
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log_debug("Resolving service type %s (family %s, interface %s).", domain, af_to_name(arg_family) ?: "*", isempty(ifname) ? "*" : ifname);
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|
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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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"ResolveService");
|
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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, "isssit", arg_ifindex, name, type, domain, 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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|
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ts = now(CLOCK_MONOTONIC);
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|
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r = sd_bus_call(bus, req, DNS_CALL_TIMEOUT_USEC, &error, &reply);
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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);
|
|
|
|
c = 0;
|
|
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);
|
|
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, "ssst", &canonical_name, &canonical_type, &canonical_domain, &flags);
|
|
if (r < 0)
|
|
return bus_log_parse_error(r);
|
|
|
|
if (isempty(canonical_name))
|
|
canonical_name = NULL;
|
|
if (isempty(canonical_type))
|
|
canonical_type = NULL;
|
|
|
|
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 void help_dns_types(void) {
|
|
int i;
|
|
const char *t;
|
|
|
|
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) {
|
|
int i;
|
|
const char *t;
|
|
|
|
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("%s [OPTIONS...] NAME...\n"
|
|
"%s [OPTIONS...] --service [[NAME] TYPE] DOMAIN\n\n"
|
|
"Resolve domain names, IPv4 or IPv6 addresses, resource records, and services.\n\n"
|
|
" -h --help Show this help\n"
|
|
" --version Show package version\n"
|
|
" -4 Resolve IPv4 addresses\n"
|
|
" -6 Resolve IPv6 addresses\n"
|
|
" -i INTERFACE Look on interface\n"
|
|
" -p --protocol=PROTOCOL Look via protocol\n"
|
|
" -t --type=TYPE Query RR with DNS type\n"
|
|
" -c --class=CLASS Query RR with DNS class\n"
|
|
" --service Resolve service (SRV)\n"
|
|
" --service-address=BOOL Do [not] resolve address for services\n"
|
|
" --service-txt=BOOL Do [not] resolve TXT records for services\n"
|
|
" --cname=BOOL Do [not] follow CNAME redirects\n"
|
|
" --search=BOOL Do [not] use search domains\n"
|
|
" --legend=BOOL Do [not] print column headers\n"
|
|
, program_invocation_short_name, 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_SEARCH,
|
|
};
|
|
|
|
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 },
|
|
{ "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 },
|
|
{ "search", required_argument, NULL, ARG_SEARCH },
|
|
{}
|
|
};
|
|
|
|
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;
|
|
}
|
|
|
|
arg_type = dns_type_from_string(optarg);
|
|
if (arg_type < 0) {
|
|
log_error("Failed to parse RR record type %s", optarg);
|
|
return arg_type;
|
|
}
|
|
assert(arg_type > 0 && (uint16_t) arg_type == arg_type);
|
|
|
|
break;
|
|
|
|
case 'c':
|
|
if (streq(optarg, "help")) {
|
|
help_dns_classes();
|
|
return 0;
|
|
}
|
|
|
|
r = dns_class_from_string(optarg, &arg_class);
|
|
if (r < 0) {
|
|
log_error("Failed to parse RR record class %s", optarg);
|
|
return 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, "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_resolve_service = true;
|
|
break;
|
|
|
|
case ARG_CNAME:
|
|
r = parse_boolean(optarg);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to parse --cname= argument.");
|
|
if (r == 0)
|
|
arg_flags |= SD_RESOLVED_NO_CNAME;
|
|
else
|
|
arg_flags &= ~SD_RESOLVED_NO_CNAME;
|
|
break;
|
|
|
|
case ARG_SERVICE_ADDRESS:
|
|
r = parse_boolean(optarg);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to parse --service-address= argument.");
|
|
if (r == 0)
|
|
arg_flags |= SD_RESOLVED_NO_ADDRESS;
|
|
else
|
|
arg_flags &= ~SD_RESOLVED_NO_ADDRESS;
|
|
break;
|
|
|
|
case ARG_SERVICE_TXT:
|
|
r = parse_boolean(optarg);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to parse --service-txt= argument.");
|
|
if (r == 0)
|
|
arg_flags |= SD_RESOLVED_NO_TXT;
|
|
else
|
|
arg_flags &= ~SD_RESOLVED_NO_TXT;
|
|
break;
|
|
|
|
case ARG_SEARCH:
|
|
r = parse_boolean(optarg);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to parse --search argument.");
|
|
if (r == 0)
|
|
arg_flags |= SD_RESOLVED_NO_SEARCH;
|
|
else
|
|
arg_flags &= ~SD_RESOLVED_NO_SEARCH;
|
|
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_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;
|
|
|
|
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;
|
|
|
|
if (optind >= argc) {
|
|
log_error("No arguments passed");
|
|
r = -EINVAL;
|
|
goto finish;
|
|
}
|
|
|
|
r = sd_bus_open_system(&bus);
|
|
if (r < 0) {
|
|
log_error_errno(r, "sd_bus_open_system: %m");
|
|
goto finish;
|
|
}
|
|
|
|
if (arg_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;
|
|
}
|
|
|
|
goto finish;
|
|
}
|
|
|
|
while (argv[optind]) {
|
|
int family, ifindex, k;
|
|
union in_addr_union a;
|
|
|
|
if (arg_type != 0)
|
|
k = resolve_record(bus, argv[optind]);
|
|
else {
|
|
k = parse_address(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++;
|
|
}
|
|
|
|
finish:
|
|
return r == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
|
|
}
|