2012-10-17 21:23:30 +02:00
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/*-*- 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 2012 Lennart Poettering
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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 <stdlib.h>
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#include <stdbool.h>
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#include <unistd.h>
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#include <getopt.h>
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2012-11-12 20:16:07 +01:00
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#include <locale.h>
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2012-10-17 21:23:30 +02:00
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#include <string.h>
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#include <sys/timex.h>
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2012-10-21 03:35:33 +02:00
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#include <sys/utsname.h>
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2012-10-17 21:23:30 +02:00
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2013-10-30 06:55:31 +01:00
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#include "sd-bus.h"
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#include "bus-util.h"
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#include "bus-error.h"
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2012-10-17 21:23:30 +02:00
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#include "util.h"
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#include "spawn-polkit-agent.h"
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#include "build.h"
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#include "hwclock.h"
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#include "strv.h"
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#include "sd-id128.h"
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#include "virt.h"
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2013-02-14 12:26:13 +01:00
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#include "fileio.h"
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2012-10-17 21:23:30 +02:00
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static bool arg_ask_password = true;
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2013-10-30 06:55:31 +01:00
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static BusTransport arg_transport = BUS_TRANSPORT_LOCAL;
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2013-06-09 22:54:39 +02:00
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static char *arg_host = NULL;
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2013-08-15 00:55:11 +02:00
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static bool arg_transient = false;
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static bool arg_pretty = false;
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static bool arg_static = false;
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2012-10-17 21:23:30 +02:00
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2013-11-07 21:06:44 +01:00
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static void polkit_agent_open_if_enabled(void) {
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/* Open the polkit agent as a child process if necessary */
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if (!arg_ask_password)
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return;
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if (arg_transport != BUS_TRANSPORT_LOCAL)
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return;
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polkit_agent_open();
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}
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2012-10-17 21:23:30 +02:00
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typedef struct StatusInfo {
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2013-10-30 06:55:31 +01:00
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char *hostname;
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char *static_hostname;
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char *pretty_hostname;
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char *icon_name;
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char *chassis;
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2012-10-17 21:23:30 +02:00
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} StatusInfo;
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static void print_status_info(StatusInfo *i) {
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sd_id128_t mid, bid;
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int r;
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2012-10-21 03:35:33 +02:00
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const char *id = NULL;
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_cleanup_free_ char *pretty_name = NULL, *cpe_name = NULL;
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struct utsname u;
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2012-10-17 21:23:30 +02:00
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assert(i);
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printf(" Static hostname: %s\n",
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strna(i->static_hostname));
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2013-05-07 20:56:05 +02:00
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if (!isempty(i->pretty_hostname) &&
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!streq_ptr(i->pretty_hostname, i->static_hostname))
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printf(" Pretty hostname: %s\n",
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strna(i->pretty_hostname));
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if (!isempty(i->hostname) &&
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!streq_ptr(i->hostname, i->static_hostname))
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2012-10-17 21:23:30 +02:00
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printf("Transient hostname: %s\n",
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strna(i->hostname));
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2013-05-07 20:56:05 +02:00
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printf(" Icon name: %s\n"
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2012-12-24 19:03:59 +01:00
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" Chassis: %s\n",
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strna(i->icon_name),
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strna(i->chassis));
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2012-10-17 21:23:30 +02:00
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r = sd_id128_get_machine(&mid);
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if (r >= 0)
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printf(" Machine ID: " SD_ID128_FORMAT_STR "\n", SD_ID128_FORMAT_VAL(mid));
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r = sd_id128_get_boot(&bid);
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if (r >= 0)
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printf(" Boot ID: " SD_ID128_FORMAT_STR "\n", SD_ID128_FORMAT_VAL(bid));
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2012-10-21 03:35:33 +02:00
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if (detect_virtualization(&id) > 0)
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2012-10-17 21:23:30 +02:00
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printf(" Virtualization: %s\n", id);
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2012-10-21 03:35:33 +02:00
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r = parse_env_file("/etc/os-release", NEWLINE,
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"PRETTY_NAME", &pretty_name,
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"CPE_NAME", &cpe_name,
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NULL);
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2013-10-12 01:34:17 +02:00
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if (r < 0)
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log_warning("Failed to read /etc/os-release: %s", strerror(-r));
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2012-10-21 03:35:33 +02:00
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if (!isempty(pretty_name))
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printf(" Operating System: %s\n", pretty_name);
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if (!isempty(cpe_name))
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printf(" CPE OS Name: %s\n", cpe_name);
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assert_se(uname(&u) >= 0);
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printf(" Kernel: %s %s\n"
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" Architecture: %s\n", u.sysname, u.release, u.machine);
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2012-10-17 21:23:30 +02:00
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}
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2013-10-30 06:55:31 +01:00
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static int show_one_name(sd_bus *bus, const char* attr) {
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_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
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_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
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const char *s;
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2013-08-15 00:55:11 +02:00
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int r;
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2013-10-30 06:55:31 +01:00
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r = sd_bus_get_property(
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2013-08-15 00:55:11 +02:00
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bus,
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"org.freedesktop.hostname1",
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"/org/freedesktop/hostname1",
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2013-10-30 06:55:31 +01:00
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"org.freedesktop.hostname1",
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attr,
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&error, &reply, "s");
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if (r < 0) {
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log_error("Could not get property: %s", bus_error_message(&error, -r));
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2013-08-15 00:55:11 +02:00
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return r;
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}
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2013-10-30 06:55:31 +01:00
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r = sd_bus_message_read(reply, "s", &s);
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if (r < 0)
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2013-11-07 21:26:31 +01:00
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return bus_log_parse_error(r);
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2013-08-15 00:55:11 +02:00
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printf("%s\n", s);
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return 0;
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}
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2013-10-30 06:55:31 +01:00
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static int show_all_names(sd_bus *bus) {
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2013-03-25 00:59:00 +01:00
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StatusInfo info = {};
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2013-11-05 02:57:49 +01:00
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static const struct bus_properties_map map[] = {
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{ "Hostname", "s", NULL, offsetof(StatusInfo, hostname) },
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{ "StaticHostname", "s", NULL, offsetof(StatusInfo, static_hostname) },
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{ "PrettyHostname", "s", NULL, offsetof(StatusInfo, pretty_hostname) },
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{ "IconName", "s", NULL, offsetof(StatusInfo, icon_name) },
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{ "Chassis", "s", NULL, offsetof(StatusInfo, chassis) },
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2013-10-30 06:55:31 +01:00
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{}
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};
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int r;
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2012-10-17 21:23:30 +02:00
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2013-10-30 06:55:31 +01:00
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r = bus_map_all_properties(bus,
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"org.freedesktop.hostname1",
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"/org/freedesktop/hostname1",
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2013-11-05 02:57:49 +01:00
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map,
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&info);
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2012-10-17 21:23:30 +02:00
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if (r < 0)
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2013-10-30 06:55:31 +01:00
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goto fail;
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2012-10-17 21:23:30 +02:00
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print_status_info(&info);
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2013-10-30 06:55:31 +01:00
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fail:
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free(info.hostname);
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free(info.static_hostname);
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free(info.pretty_hostname);
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free(info.icon_name);
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free(info.chassis);
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2012-10-17 21:23:30 +02:00
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return 0;
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}
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2013-10-30 06:55:31 +01:00
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static int show_status(sd_bus *bus, char **args, unsigned n) {
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2013-08-15 00:55:11 +02:00
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assert(args);
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if (arg_pretty || arg_static || arg_transient) {
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const char *attr;
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if (!!arg_static + !!arg_pretty + !!arg_transient > 1) {
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log_error("Cannot query more than one name type at a time");
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return -EINVAL;
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}
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attr = arg_pretty ? "PrettyHostname" :
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arg_static ? "StaticHostname" : "Hostname";
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return show_one_name(bus, attr);
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} else
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return show_all_names(bus);
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}
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2013-10-30 06:55:31 +01:00
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static int set_simple_string(sd_bus *bus, const char *method, const char *value) {
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_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
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int r = 0;
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2013-11-07 21:06:44 +01:00
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polkit_agent_open_if_enabled();
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2013-10-30 06:55:31 +01:00
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r = sd_bus_call_method(
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bus,
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"org.freedesktop.hostname1",
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"/org/freedesktop/hostname1",
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"org.freedesktop.hostname1",
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method,
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&error, NULL,
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"sb", value, arg_ask_password);
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if (r < 0)
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log_error("Could not set property: %s", bus_error_message(&error, -r));
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return r;
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}
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static int set_hostname(sd_bus *bus, char **args, unsigned n) {
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2012-10-17 21:23:30 +02:00
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_cleanup_free_ char *h = NULL;
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const char *hostname = args[1];
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int r;
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assert(args);
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assert(n == 2);
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2013-08-15 00:55:11 +02:00
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if (!arg_pretty && !arg_static && !arg_transient)
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arg_pretty = arg_static = arg_transient = true;
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if (arg_pretty) {
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2013-04-03 22:06:16 +02:00
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const char *p;
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/* If the passed hostname is already valid, then
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* assume the user doesn't know anything about pretty
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* hostnames, so let's unset the pretty hostname, and
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* just set the passed hostname as static/dynamic
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* hostname. */
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2013-05-07 20:55:11 +02:00
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h = strdup(hostname);
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if (!h)
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return log_oom();
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hostname_cleanup(h, true);
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2013-08-15 00:55:11 +02:00
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if (arg_static && streq(h, hostname))
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2013-04-03 22:06:16 +02:00
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p = "";
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else {
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p = hostname;
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2013-05-07 20:55:11 +02:00
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hostname = h;
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2013-04-03 22:06:16 +02:00
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}
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2013-10-30 06:55:31 +01:00
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r = set_simple_string(bus, "SetPrettyHostname", p);
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2012-10-17 21:23:30 +02:00
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if (r < 0)
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return r;
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}
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2013-08-15 00:55:11 +02:00
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if (arg_static) {
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2013-10-30 06:55:31 +01:00
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r = set_simple_string(bus, "SetStaticHostname", hostname);
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2012-10-17 21:23:30 +02:00
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if (r < 0)
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return r;
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}
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2013-08-15 00:55:11 +02:00
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if (arg_transient) {
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2013-10-30 06:55:31 +01:00
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r = set_simple_string(bus, "SetHostname", hostname);
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2012-10-17 21:23:30 +02:00
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if (r < 0)
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return r;
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}
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return 0;
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}
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2013-10-30 06:55:31 +01:00
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static int set_icon_name(sd_bus *bus, char **args, unsigned n) {
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2012-10-17 21:23:30 +02:00
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assert(args);
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assert(n == 2);
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2013-10-30 06:55:31 +01:00
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return set_simple_string(bus, "SetIconName", args[1]);
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2012-10-17 21:23:30 +02:00
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}
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2013-10-30 06:55:31 +01:00
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static int set_chassis(sd_bus *bus, char **args, unsigned n) {
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2012-12-24 19:03:59 +01:00
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assert(args);
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assert(n == 2);
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2013-10-30 06:55:31 +01:00
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return set_simple_string(bus, "SetChasis", args[1]);
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2012-12-24 19:03:59 +01:00
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}
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2012-10-17 21:23:30 +02:00
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static int help(void) {
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2012-10-19 04:51:53 +02:00
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printf("%s [OPTIONS...] COMMAND ...\n\n"
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"Query or change system hostname.\n\n"
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2012-10-17 21:23:30 +02:00
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" -h --help Show this help\n"
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" --version Show package version\n"
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2012-10-19 04:51:53 +02:00
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" --no-ask-password Do not prompt for password\n"
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2013-10-30 06:55:31 +01:00
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" -H --host=[USER@]HOST Operate on remote host\n"
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2013-11-07 21:31:13 +01:00
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" -M --machine=CONTAINER Operate on local container\n"
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" --transient Only set transient hostname\n"
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" --static Only set static hostname\n"
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" --pretty Only set pretty hostname\n\n"
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2012-10-17 21:23:30 +02:00
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"Commands:\n"
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2012-10-19 04:51:53 +02:00
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" status Show current hostname settings\n"
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" set-hostname NAME Set system hostname\n"
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2012-12-24 19:03:59 +01:00
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" set-icon-name NAME Set icon name for host\n"
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" set-chassis NAME Set chassis type for host\n",
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2012-10-17 21:23:30 +02:00
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program_invocation_short_name);
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return 0;
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}
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static int parse_argv(int argc, char *argv[]) {
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enum {
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ARG_VERSION = 0x100,
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ARG_NO_ASK_PASSWORD,
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2013-08-15 00:55:11 +02:00
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|
|
ARG_TRANSIENT,
|
|
|
|
ARG_STATIC,
|
|
|
|
ARG_PRETTY
|
2012-10-17 21:23:30 +02:00
|
|
|
};
|
|
|
|
|
|
|
|
static const struct option options[] = {
|
|
|
|
{ "help", no_argument, NULL, 'h' },
|
|
|
|
{ "version", no_argument, NULL, ARG_VERSION },
|
2013-11-06 18:28:39 +01:00
|
|
|
{ "transient", no_argument, NULL, ARG_TRANSIENT },
|
|
|
|
{ "static", no_argument, NULL, ARG_STATIC },
|
|
|
|
{ "pretty", no_argument, NULL, ARG_PRETTY },
|
2012-10-17 21:23:30 +02:00
|
|
|
{ "host", required_argument, NULL, 'H' },
|
2013-10-30 06:55:31 +01:00
|
|
|
{ "machine", required_argument, NULL, 'M' },
|
2012-10-17 21:23:30 +02:00
|
|
|
{ "no-ask-password", no_argument, NULL, ARG_NO_ASK_PASSWORD },
|
2013-11-06 18:28:39 +01:00
|
|
|
{}
|
2012-10-17 21:23:30 +02:00
|
|
|
};
|
|
|
|
|
|
|
|
int c;
|
|
|
|
|
|
|
|
assert(argc >= 0);
|
|
|
|
assert(argv);
|
|
|
|
|
2013-11-04 17:32:50 +01:00
|
|
|
while ((c = getopt_long(argc, argv, "hH:M:", options, NULL)) >= 0) {
|
2012-10-17 21:23:30 +02:00
|
|
|
|
|
|
|
switch (c) {
|
|
|
|
|
|
|
|
case 'h':
|
2013-11-06 18:28:39 +01:00
|
|
|
return help();
|
2012-10-17 21:23:30 +02:00
|
|
|
|
|
|
|
case ARG_VERSION:
|
|
|
|
puts(PACKAGE_STRING);
|
|
|
|
puts(SYSTEMD_FEATURES);
|
|
|
|
return 0;
|
|
|
|
|
2013-10-30 06:55:31 +01:00
|
|
|
case 'H':
|
|
|
|
arg_transport = BUS_TRANSPORT_REMOTE;
|
|
|
|
arg_host = optarg;
|
2012-10-17 21:23:30 +02:00
|
|
|
break;
|
|
|
|
|
2013-10-30 06:55:31 +01:00
|
|
|
case 'M':
|
|
|
|
arg_transport = BUS_TRANSPORT_CONTAINER;
|
|
|
|
arg_host = optarg;
|
2012-10-17 21:23:30 +02:00
|
|
|
break;
|
|
|
|
|
2013-08-15 00:55:11 +02:00
|
|
|
case ARG_TRANSIENT:
|
|
|
|
arg_transient = true;
|
2012-10-17 21:23:30 +02:00
|
|
|
break;
|
|
|
|
|
2013-08-15 00:55:11 +02:00
|
|
|
case ARG_PRETTY:
|
|
|
|
arg_pretty = true;
|
2012-10-17 21:23:30 +02:00
|
|
|
break;
|
|
|
|
|
2013-08-15 00:55:11 +02:00
|
|
|
case ARG_STATIC:
|
|
|
|
arg_static = true;
|
2012-10-17 21:23:30 +02:00
|
|
|
break;
|
|
|
|
|
2012-11-15 22:47:04 +01:00
|
|
|
case ARG_NO_ASK_PASSWORD:
|
|
|
|
arg_ask_password = false;
|
|
|
|
break;
|
|
|
|
|
2012-10-17 21:23:30 +02:00
|
|
|
case '?':
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
default:
|
2013-11-06 18:28:39 +01:00
|
|
|
assert_not_reached("Unhandled option");
|
2012-10-17 21:23:30 +02:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
2013-10-30 06:55:31 +01:00
|
|
|
static int hostnamectl_main(sd_bus *bus, int argc, char *argv[]) {
|
2012-10-17 21:23:30 +02:00
|
|
|
|
|
|
|
static const struct {
|
|
|
|
const char* verb;
|
|
|
|
const enum {
|
|
|
|
MORE,
|
|
|
|
LESS,
|
|
|
|
EQUAL
|
|
|
|
} argc_cmp;
|
|
|
|
const int argc;
|
2013-10-30 06:55:31 +01:00
|
|
|
int (* const dispatch)(sd_bus *bus, char **args, unsigned n);
|
2012-10-17 21:23:30 +02:00
|
|
|
} verbs[] = {
|
2012-12-24 19:03:59 +01:00
|
|
|
{ "status", LESS, 1, show_status },
|
|
|
|
{ "set-hostname", EQUAL, 2, set_hostname },
|
|
|
|
{ "set-icon-name", EQUAL, 2, set_icon_name },
|
|
|
|
{ "set-chassis", EQUAL, 2, set_chassis },
|
2012-10-17 21:23:30 +02:00
|
|
|
};
|
|
|
|
|
|
|
|
int left;
|
|
|
|
unsigned i;
|
|
|
|
|
|
|
|
assert(argc >= 0);
|
|
|
|
assert(argv);
|
|
|
|
|
|
|
|
left = argc - optind;
|
|
|
|
|
|
|
|
if (left <= 0)
|
|
|
|
/* Special rule: no arguments means "status" */
|
|
|
|
i = 0;
|
|
|
|
else {
|
|
|
|
if (streq(argv[optind], "help")) {
|
|
|
|
help();
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
for (i = 0; i < ELEMENTSOF(verbs); i++)
|
|
|
|
if (streq(argv[optind], verbs[i].verb))
|
|
|
|
break;
|
|
|
|
|
|
|
|
if (i >= ELEMENTSOF(verbs)) {
|
|
|
|
log_error("Unknown operation %s", argv[optind]);
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
switch (verbs[i].argc_cmp) {
|
|
|
|
|
|
|
|
case EQUAL:
|
|
|
|
if (left != verbs[i].argc) {
|
|
|
|
log_error("Invalid number of arguments.");
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
case MORE:
|
|
|
|
if (left < verbs[i].argc) {
|
|
|
|
log_error("Too few arguments.");
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
case LESS:
|
|
|
|
if (left > verbs[i].argc) {
|
|
|
|
log_error("Too many arguments.");
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
assert_not_reached("Unknown comparison operator.");
|
|
|
|
}
|
|
|
|
|
|
|
|
return verbs[i].dispatch(bus, argv + optind, left);
|
|
|
|
}
|
|
|
|
|
|
|
|
int main(int argc, char *argv[]) {
|
2013-10-30 06:55:31 +01:00
|
|
|
_cleanup_bus_unref_ sd_bus *bus = NULL;
|
2013-11-06 17:32:51 +01:00
|
|
|
int r;
|
2012-10-17 21:23:30 +02:00
|
|
|
|
2012-11-12 20:16:07 +01:00
|
|
|
setlocale(LC_ALL, "");
|
2012-10-17 21:23:30 +02:00
|
|
|
log_parse_environment();
|
|
|
|
log_open();
|
|
|
|
|
|
|
|
r = parse_argv(argc, argv);
|
2013-10-30 06:55:31 +01:00
|
|
|
if (r <= 0)
|
2012-10-17 21:23:30 +02:00
|
|
|
goto finish;
|
2013-10-30 06:55:31 +01:00
|
|
|
|
|
|
|
r = bus_open_transport(arg_transport, arg_host, false, &bus);
|
|
|
|
if (r < 0) {
|
|
|
|
log_error("Failed to create bus connection: %s", strerror(-r));
|
2012-10-17 21:23:30 +02:00
|
|
|
goto finish;
|
|
|
|
}
|
|
|
|
|
2013-10-30 06:55:31 +01:00
|
|
|
r = hostnamectl_main(bus, argc, argv);
|
2012-10-17 21:23:30 +02:00
|
|
|
|
|
|
|
finish:
|
2013-10-30 06:55:31 +01:00
|
|
|
return r < 0 ? EXIT_FAILURE : r;
|
2012-10-17 21:23:30 +02:00
|
|
|
}
|