[thirdparty/systemd.git] / src / hostname / hostnamectl.c

/* SPDX-License-Identifier: LGPL-2.1+ */
/***
  Copyright 2012 Lennart Poettering
***/

#include <getopt.h>
#include <locale.h>
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>

#include "sd-bus.h"
#include "sd-id128.h"

#include "alloc-util.h"
#include "architecture.h"
#include "bus-error.h"
#include "bus-util.h"
#include "hostname-util.h"
#include "spawn-polkit-agent.h"
#include "terminal-util.h"
#include "util.h"
#include "verbs.h"

static bool arg_ask_password = true;
static BusTransport arg_transport = BUS_TRANSPORT_LOCAL;
static char *arg_host = NULL;
static bool arg_transient = false;
static bool arg_pretty = false;
static bool arg_static = false;

typedef struct StatusInfo {
        const char *hostname;
        const char *static_hostname;
        const char *pretty_hostname;
        const char *icon_name;
        const char *chassis;
        const char *deployment;
        const char *location;
        const char *kernel_name;
        const char *kernel_release;
        const char *os_pretty_name;
        const char *os_cpe_name;
        const char *virtualization;
        const char *architecture;
        const char *home_url;
} StatusInfo;

static void print_status_info(StatusInfo *i) {
        sd_id128_t mid = {}, bid = {};
        int r;

        assert(i);

        printf("   Static hostname: %s\n", strna(i->static_hostname));

        if (!isempty(i->pretty_hostname) &&
            !streq_ptr(i->pretty_hostname, i->static_hostname))
                printf("   Pretty hostname: %s\n", i->pretty_hostname);

        if (!isempty(i->hostname) &&
            !streq_ptr(i->hostname, i->static_hostname))
                printf("Transient hostname: %s\n", i->hostname);

        if (!isempty(i->icon_name))
                printf("         Icon name: %s\n",
                       strna(i->icon_name));

        if (!isempty(i->chassis))
                printf("           Chassis: %s\n",
                       strna(i->chassis));

        if (!isempty(i->deployment))
                printf("        Deployment: %s\n", i->deployment);

        if (!isempty(i->location))
                printf("          Location: %s\n", i->location);

        r = sd_id128_get_machine(&mid);
        if (r >= 0)
                printf("        Machine ID: " SD_ID128_FORMAT_STR "\n", SD_ID128_FORMAT_VAL(mid));

        r = sd_id128_get_boot(&bid);
        if (r >= 0)
                printf("           Boot ID: " SD_ID128_FORMAT_STR "\n", SD_ID128_FORMAT_VAL(bid));

        if (!isempty(i->virtualization))
                printf("    Virtualization: %s\n", i->virtualization);

        if (!isempty(i->os_pretty_name)) {
                _cleanup_free_ char *formatted = NULL;
                const char *t = i->os_pretty_name;

                if (i->home_url) {
                        if (terminal_urlify(i->home_url, i->os_pretty_name, &formatted) >= 0)
                                t = formatted;
                }

                printf("  Operating System: %s\n", t);
        }

        if (!isempty(i->os_cpe_name))
                printf("       CPE OS Name: %s\n", i->os_cpe_name);

        if (!isempty(i->kernel_name) && !isempty(i->kernel_release))
                printf("            Kernel: %s %s\n", i->kernel_name, i->kernel_release);

        if (!isempty(i->architecture))
                printf("      Architecture: %s\n", i->architecture);

}

static int show_one_name(sd_bus *bus, const char* attr) {
        _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
        _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
        const char *s;
        int r;

        r = sd_bus_get_property(
                        bus,
                        "org.freedesktop.hostname1",
                        "/org/freedesktop/hostname1",
                        "org.freedesktop.hostname1",
                        attr,
                        &error, &reply, "s");
        if (r < 0)
                return log_error_errno(r, "Could not get property: %s", bus_error_message(&error, r));

        r = sd_bus_message_read(reply, "s", &s);
        if (r < 0)
                return bus_log_parse_error(r);

        printf("%s\n", s);

        return 0;
}

static int show_all_names(sd_bus *bus, sd_bus_error *error) {
        StatusInfo info = {};

        static const struct bus_properties_map hostname_map[]  = {
                { "Hostname",                  "s", NULL, offsetof(StatusInfo, hostname)        },
                { "StaticHostname",            "s", NULL, offsetof(StatusInfo, static_hostname) },
                { "PrettyHostname",            "s", NULL, offsetof(StatusInfo, pretty_hostname) },
                { "IconName",                  "s", NULL, offsetof(StatusInfo, icon_name)       },
                { "Chassis",                   "s", NULL, offsetof(StatusInfo, chassis)         },
                { "Deployment",                "s", NULL, offsetof(StatusInfo, deployment)      },
                { "Location",                  "s", NULL, offsetof(StatusInfo, location)        },
                { "KernelName",                "s", NULL, offsetof(StatusInfo, kernel_name)     },
                { "KernelRelease",             "s", NULL, offsetof(StatusInfo, kernel_release)  },
                { "OperatingSystemPrettyName", "s", NULL, offsetof(StatusInfo, os_pretty_name)  },
                { "OperatingSystemCPEName",    "s", NULL, offsetof(StatusInfo, os_cpe_name)     },
                { "HomeURL",                   "s", NULL, offsetof(StatusInfo, home_url)        },
                {}
        };

        static const struct bus_properties_map manager_map[] = {
                { "Virtualization",            "s", NULL, offsetof(StatusInfo, virtualization)  },
                { "Architecture",              "s", NULL, offsetof(StatusInfo, architecture)    },
                {}
        };

        _cleanup_(sd_bus_message_unrefp) sd_bus_message *host_message = NULL, *manager_message = NULL;
        int r;

        r = bus_map_all_properties(bus,
                                   "org.freedesktop.hostname1",
                                   "/org/freedesktop/hostname1",
                                   hostname_map,
                                   0,
                                   error,
                                   &host_message,
                                   &info);
        if (r < 0)
                return r;

        r = bus_map_all_properties(bus,
                                   "org.freedesktop.systemd1",
                                   "/org/freedesktop/systemd1",
                                   manager_map,
                                   0,
                                   error,
                                   &manager_message,
                                   &info);

        print_status_info(&info);

        return r;
}

static int show_status(int argc, char **argv, void *userdata) {
        sd_bus *bus = userdata;
        int r;

        if (arg_pretty || arg_static || arg_transient) {
                const char *attr;

                if (!!arg_static + !!arg_pretty + !!arg_transient > 1) {
                        log_error("Cannot query more than one name type at a time");
                        return -EINVAL;
                }

                attr = arg_pretty ? "PrettyHostname" :
                        arg_static ? "StaticHostname" : "Hostname";

                return show_one_name(bus, attr);
        } else {
                _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;

                r = show_all_names(bus, &error);
                if (r < 0)
                        return log_error_errno(r, "Failed to query system properties: %s", bus_error_message(&error, r));

                return 0;
        }
}

static int set_simple_string(sd_bus *bus, const char *method, const char *value) {
        _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
        int r = 0;

        polkit_agent_open_if_enabled(arg_transport, arg_ask_password);

        r = sd_bus_call_method(
                        bus,
                        "org.freedesktop.hostname1",
                        "/org/freedesktop/hostname1",
                        "org.freedesktop.hostname1",
                        method,
                        &error, NULL,
                        "sb", value, arg_ask_password);
        if (r < 0)
                log_error("Could not set property: %s", bus_error_message(&error, -r));
        return r;
}

static int set_hostname(int argc, char **argv, void *userdata) {
        _cleanup_free_ char *h = NULL;
        const char *hostname = argv[1];
        sd_bus *bus = userdata;
        int r;

        if (!arg_pretty && !arg_static && !arg_transient)
                arg_pretty = arg_static = arg_transient = true;

        if (arg_pretty) {
                const char *p;

                /* If the passed hostname is already valid, then assume the user doesn't know anything about pretty
                 * hostnames, so let's unset the pretty hostname, and just set the passed hostname as static/dynamic
                 * hostname. */
                if (arg_static && hostname_is_valid(hostname, true))
                        p = ""; /* No pretty hostname (as it is redundant), just a static one */
                else
                        p = hostname; /* Use the passed name as pretty hostname */

                r = set_simple_string(bus, "SetPrettyHostname", p);
                if (r < 0)
                        return r;

                /* Now that we set the pretty hostname, let's clean up the parameter and use that as static
                 * hostname. If the hostname was already valid as static hostname, this will only chop off the trailing
                 * dot if there is one. If it was not valid, then it will be made fully valid by truncating, dropping
                 * multiple dots, and dropping weird chars. Note that we clean the name up only if we also are
                 * supposed to set the pretty name. If the pretty name is not being set we assume the user knows what
                 * he does and pass the name as-is. */
                h = strdup(hostname);
                if (!h)
                        return log_oom();

                hostname = hostname_cleanup(h); /* Use the cleaned up name as static hostname */
        }

        if (arg_static) {
                r = set_simple_string(bus, "SetStaticHostname", hostname);
                if (r < 0)
                        return r;
        }

        if (arg_transient) {
                r = set_simple_string(bus, "SetHostname", hostname);
                if (r < 0)
                        return r;
        }

        return 0;
}

static int set_icon_name(int argc, char **argv, void *userdata) {
        return set_simple_string(userdata, "SetIconName", argv[1]);
}

static int set_chassis(int argc, char **argv, void *userdata) {
        return set_simple_string(userdata, "SetChassis", argv[1]);
}

static int set_deployment(int argc, char **argv, void *userdata) {
        return set_simple_string(userdata, "SetDeployment", argv[1]);
}

static int set_location(int argc, char **argv, void *userdata) {
        return set_simple_string(userdata, "SetLocation", argv[1]);
}

static int help(void) {
        printf("%s [OPTIONS...] COMMAND ...\n\n"
               "Query or change system hostname.\n\n"
               "  -h --help              Show this help\n"
               "     --version           Show package version\n"
               "     --no-ask-password   Do not prompt for password\n"
               "  -H --host=[USER@]HOST  Operate on remote host\n"
               "  -M --machine=CONTAINER Operate on local container\n"
               "     --transient         Only set transient hostname\n"
               "     --static            Only set static hostname\n"
               "     --pretty            Only set pretty hostname\n\n"
               "Commands:\n"
               "  status                 Show current hostname settings\n"
               "  set-hostname NAME      Set system hostname\n"
               "  set-icon-name NAME     Set icon name for host\n"
               "  set-chassis NAME       Set chassis type for host\n"
               "  set-deployment NAME    Set deployment environment for host\n"
               "  set-location NAME      Set location for host\n"
               , program_invocation_short_name);

        return 0;
}

static int verb_help(int argc, char **argv, void *userdata) {
        return help();
}

static int parse_argv(int argc, char *argv[]) {

        enum {
                ARG_VERSION = 0x100,
                ARG_NO_ASK_PASSWORD,
                ARG_TRANSIENT,
                ARG_STATIC,
                ARG_PRETTY
        };

        static const struct option options[] = {
                { "help",            no_argument,       NULL, 'h'                 },
                { "version",         no_argument,       NULL, ARG_VERSION         },
                { "transient",       no_argument,       NULL, ARG_TRANSIENT       },
                { "static",          no_argument,       NULL, ARG_STATIC          },
                { "pretty",          no_argument,       NULL, ARG_PRETTY          },
                { "host",            required_argument, NULL, 'H'                 },
                { "machine",         required_argument, NULL, 'M'                 },
                { "no-ask-password", no_argument,       NULL, ARG_NO_ASK_PASSWORD },
                {}
        };

        int c;

        assert(argc >= 0);
        assert(argv);

        while ((c = getopt_long(argc, argv, "hH:M:", options, NULL)) >= 0)

                switch (c) {

                case 'h':
                        return help();

                case ARG_VERSION:
                        return version();

                case 'H':
                        arg_transport = BUS_TRANSPORT_REMOTE;
                        arg_host = optarg;
                        break;

                case 'M':
                        arg_transport = BUS_TRANSPORT_MACHINE;
                        arg_host = optarg;
                        break;

                case ARG_TRANSIENT:
                        arg_transient = true;
                        break;

                case ARG_PRETTY:
                        arg_pretty = true;
                        break;

                case ARG_STATIC:
                        arg_static = true;
                        break;

                case ARG_NO_ASK_PASSWORD:
                        arg_ask_password = false;
                        break;

                case '?':
                        return -EINVAL;

                default:
                        assert_not_reached("Unhandled option");
                }

        return 1;
}

static int hostnamectl_main(sd_bus *bus, int argc, char *argv[]) {

        static const Verb verbs[] = {
                { "status",         VERB_ANY, 1,        VERB_DEFAULT, show_status    },
                { "set-hostname",   2,        2,        0,            set_hostname   },
                { "set-icon-name",  2,        2,        0,            set_icon_name  },
                { "set-chassis",    2,        2,        0,            set_chassis    },
                { "set-deployment", 2,        2,        0,            set_deployment },
                { "set-location",   2,        2,        0,            set_location   },
                { "help",           VERB_ANY, VERB_ANY, 0,            verb_help      }, /* Not documented, but supported since it is created. */
                {}
        };

        return dispatch_verb(argc, argv, verbs, bus);
}

int main(int argc, char *argv[]) {
        _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
        int r;

        setlocale(LC_ALL, "");
        log_parse_environment();
        log_open();

        r = parse_argv(argc, argv);
        if (r <= 0)
                goto finish;

        r = bus_connect_transport(arg_transport, arg_host, false, &bus);
        if (r < 0) {
                log_error_errno(r, "Failed to create bus connection: %m");
                goto finish;
        }

        r = hostnamectl_main(bus, argc, argv);

finish:
        return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
}
Commit	Line	Data
53e1b683	1	/* SPDX-License-Identifier: LGPL-2.1+ */
dbc4fbae	2	/***
dbc4fbae	3	Copyright 2012 Lennart Poettering
dbc4fbae LP	4	***/
dbc4fbae LP	5
dbc4fbae	6	#include <getopt.h>
a9cdc94f	7	#include <locale.h>
3f6fd1ba LP	8	#include <stdbool.h>
3f6fd1ba LP	9	#include <stdlib.h>
dbc4fbae	10	#include <string.h>
dbc4fbae	11
b028f3e4	12	#include "sd-bus.h"
958b66ea	13	#include "sd-id128.h"
3f6fd1ba	14
b5efdb8a	15	#include "alloc-util.h"
3f6fd1ba	16	#include "architecture.h"
b028f3e4	17	#include "bus-error.h"
3f6fd1ba LP	18	#include "bus-util.h"
3f6fd1ba LP	19	#include "hostname-util.h"
dbc4fbae	20	#include "spawn-polkit-agent.h"
87adb0db	21	#include "terminal-util.h"
3f6fd1ba	22	#include "util.h"
f46bc484	23	#include "verbs.h"
dbc4fbae	24
dbc4fbae	25	static bool arg_ask_password = true;
b028f3e4	26	static BusTransport arg_transport = BUS_TRANSPORT_LOCAL;
7085053a	27	static char *arg_host = NULL;
960787ae ZJS	28	static bool arg_transient = false;
	29	static bool arg_pretty = false;
	30	static bool arg_static = false;
dbc4fbae	31
dbc4fbae	32	typedef struct StatusInfo {
f37f8a61 YW	33	const char *hostname;
	34	const char *static_hostname;
	35	const char *pretty_hostname;
	36	const char *icon_name;
	37	const char *chassis;
	38	const char *deployment;
	39	const char *location;
	40	const char *kernel_name;
	41	const char *kernel_release;
	42	const char *os_pretty_name;
	43	const char *os_cpe_name;
	44	const char *virtualization;
	45	const char *architecture;
87adb0db	46	const char *home_url;
dbc4fbae LP	47	} StatusInfo;
	48
	49	static void print_status_info(StatusInfo *i) {
39883f62	50	sd_id128_t mid = {}, bid = {};
dbc4fbae	51	int r;
dbc4fbae LP	52
	53	assert(i);
	54
e9a2e453	55	printf(" Static hostname: %s\n", strna(i->static_hostname));
dbc4fbae	56
c0b21b96 LP	57	if (!isempty(i->pretty_hostname) &&
c0b21b96 LP	58	!streq_ptr(i->pretty_hostname, i->static_hostname))
e9a2e453	59	printf(" Pretty hostname: %s\n", i->pretty_hostname);
c0b21b96 LP	60
	61	if (!isempty(i->hostname) &&
	62	!streq_ptr(i->hostname, i->static_hostname))
e9a2e453	63	printf("Transient hostname: %s\n", i->hostname);
dbc4fbae	64
41414fed LP	65	if (!isempty(i->icon_name))
	66	printf(" Icon name: %s\n",
	67	strna(i->icon_name));
	68
	69	if (!isempty(i->chassis))
	70	printf(" Chassis: %s\n",
	71	strna(i->chassis));
	72
	73	if (!isempty(i->deployment))
	74	printf(" Deployment: %s\n", i->deployment);
	75
	76	if (!isempty(i->location))
	77	printf(" Location: %s\n", i->location);
dbc4fbae LP	78
	79	r = sd_id128_get_machine(&mid);
	80	if (r >= 0)
	81	printf(" Machine ID: " SD_ID128_FORMAT_STR "\n", SD_ID128_FORMAT_VAL(mid));
	82
	83	r = sd_id128_get_boot(&bid);
	84	if (r >= 0)
	85	printf(" Boot ID: " SD_ID128_FORMAT_STR "\n", SD_ID128_FORMAT_VAL(bid));
	86
e9a2e453 LP	87	if (!isempty(i->virtualization))
e9a2e453 LP	88	printf(" Virtualization: %s\n", i->virtualization);
fe29f9d2	89
87adb0db LP	90	if (!isempty(i->os_pretty_name)) {
	91	_cleanup_free_ char *formatted = NULL;
	92	const char *t = i->os_pretty_name;
	93
	94	if (i->home_url) {
	95	if (terminal_urlify(i->home_url, i->os_pretty_name, &formatted) >= 0)
	96	t = formatted;
	97	}
	98
	99	printf(" Operating System: %s\n", t);
	100	}
fe29f9d2	101
3448456b DH	102	if (!isempty(i->os_cpe_name))
3448456b DH	103	printf(" CPE OS Name: %s\n", i->os_cpe_name);
fe29f9d2	104
fa4f8f9b DH	105	if (!isempty(i->kernel_name) && !isempty(i->kernel_release))
fa4f8f9b DH	106	printf(" Kernel: %s %s\n", i->kernel_name, i->kernel_release);
e9a2e453 LP	107
	108	if (!isempty(i->architecture))
	109	printf(" Architecture: %s\n", i->architecture);
fe29f9d2	110
dbc4fbae LP	111	}
dbc4fbae LP	112
b028f3e4	113	static int show_one_name(sd_bus bus, const char attr) {
4afd3348 LP	114	_cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
4afd3348 LP	115	_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
b028f3e4	116	const char *s;
960787ae ZJS	117	int r;
960787ae ZJS	118
b028f3e4	119	r = sd_bus_get_property(
960787ae ZJS	120	bus,
	121	"org.freedesktop.hostname1",
	122	"/org/freedesktop/hostname1",
b028f3e4 SP	123	"org.freedesktop.hostname1",
	124	attr,
	125	&error, &reply, "s");
f9e0eefc LP	126	if (r < 0)
f9e0eefc LP	127	return log_error_errno(r, "Could not get property: %s", bus_error_message(&error, r));
960787ae	128
b028f3e4 SP	129	r = sd_bus_message_read(reply, "s", &s);
b028f3e4 SP	130	if (r < 0)
5b30bef8	131	return bus_log_parse_error(r);
960787ae	132
960787ae ZJS	133	printf("%s\n", s);
	134
	135	return 0;
	136	}
	137
f9e0eefc	138	static int show_all_names(sd_bus bus, sd_bus_error error) {
b92bea5d	139	StatusInfo info = {};
e9a2e453 LP	140
e9a2e453 LP	141	static const struct bus_properties_map hostname_map[] = {
41414fed LP	142	{ "Hostname", "s", NULL, offsetof(StatusInfo, hostname) },
	143	{ "StaticHostname", "s", NULL, offsetof(StatusInfo, static_hostname) },
	144	{ "PrettyHostname", "s", NULL, offsetof(StatusInfo, pretty_hostname) },
	145	{ "IconName", "s", NULL, offsetof(StatusInfo, icon_name) },
	146	{ "Chassis", "s", NULL, offsetof(StatusInfo, chassis) },
	147	{ "Deployment", "s", NULL, offsetof(StatusInfo, deployment) },
	148	{ "Location", "s", NULL, offsetof(StatusInfo, location) },
	149	{ "KernelName", "s", NULL, offsetof(StatusInfo, kernel_name) },
	150	{ "KernelRelease", "s", NULL, offsetof(StatusInfo, kernel_release) },
	151	{ "OperatingSystemPrettyName", "s", NULL, offsetof(StatusInfo, os_pretty_name) },
	152	{ "OperatingSystemCPEName", "s", NULL, offsetof(StatusInfo, os_cpe_name) },
87adb0db	153	{ "HomeURL", "s", NULL, offsetof(StatusInfo, home_url) },
b028f3e4 SP	154	{}
b028f3e4 SP	155	};
e9a2e453 LP	156
e9a2e453 LP	157	static const struct bus_properties_map manager_map[] = {
41414fed LP	158	{ "Virtualization", "s", NULL, offsetof(StatusInfo, virtualization) },
41414fed LP	159	{ "Architecture", "s", NULL, offsetof(StatusInfo, architecture) },
e9a2e453 LP	160	{}
	161	};
	162
f37f8a61	163	_cleanup_(sd_bus_message_unrefp) sd_bus_message host_message = NULL, manager_message = NULL;
b028f3e4	164	int r;
dbc4fbae	165
b028f3e4 SP	166	r = bus_map_all_properties(bus,
	167	"org.freedesktop.hostname1",
	168	"/org/freedesktop/hostname1",
e9a2e453	169	hostname_map,
a7e4861c	170	0,
f9e0eefc	171	error,
f37f8a61	172	&host_message,
9f6eb1cd	173	&info);
dbc4fbae	174	if (r < 0)
f37f8a61	175	return r;
dbc4fbae	176
f37f8a61 YW	177	r = bus_map_all_properties(bus,
	178	"org.freedesktop.systemd1",
	179	"/org/freedesktop/systemd1",
	180	manager_map,
a7e4861c	181	0,
f37f8a61 YW	182	error,
	183	&manager_message,
	184	&info);
e9a2e453	185
dbc4fbae	186	print_status_info(&info);
b028f3e4	187
e9a2e453	188	return r;
dbc4fbae LP	189	}
dbc4fbae LP	190
f46bc484 YW	191	static int show_status(int argc, char *argv, void userdata) {
f46bc484 YW	192	sd_bus *bus = userdata;
f9e0eefc LP	193	int r;
f9e0eefc LP	194
960787ae ZJS	195	if (arg_pretty \|\| arg_static \|\| arg_transient) {
	196	const char *attr;
	197
	198	if (!!arg_static + !!arg_pretty + !!arg_transient > 1) {
	199	log_error("Cannot query more than one name type at a time");
	200	return -EINVAL;
	201	}
	202
	203	attr = arg_pretty ? "PrettyHostname" :
	204	arg_static ? "StaticHostname" : "Hostname";
	205
	206	return show_one_name(bus, attr);
f9e0eefc LP	207	} else {
	208	_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
	209
	210	r = show_all_names(bus, &error);
	211	if (r < 0)
	212	return log_error_errno(r, "Failed to query system properties: %s", bus_error_message(&error, r));
	213
	214	return 0;
	215	}
960787ae ZJS	216	}
960787ae ZJS	217
b028f3e4	218	static int set_simple_string(sd_bus bus, const char method, const char *value) {
4afd3348	219	_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
b028f3e4 SP	220	int r = 0;
b028f3e4 SP	221
8a4b13c5	222	polkit_agent_open_if_enabled(arg_transport, arg_ask_password);
b028f3e4 SP	223
	224	r = sd_bus_call_method(
	225	bus,
	226	"org.freedesktop.hostname1",
	227	"/org/freedesktop/hostname1",
	228	"org.freedesktop.hostname1",
	229	method,
	230	&error, NULL,
	231	"sb", value, arg_ask_password);
	232	if (r < 0)
	233	log_error("Could not set property: %s", bus_error_message(&error, -r));
	234	return r;
	235	}
	236
f46bc484	237	static int set_hostname(int argc, char *argv, void userdata) {
dbc4fbae	238	_cleanup_free_ char *h = NULL;
f46bc484 YW	239	const char *hostname = argv[1];
f46bc484 YW	240	sd_bus *bus = userdata;
dbc4fbae LP	241	int r;
dbc4fbae LP	242
960787ae ZJS	243	if (!arg_pretty && !arg_static && !arg_transient)
	244	arg_pretty = arg_static = arg_transient = true;
	245
	246	if (arg_pretty) {
fda2c5d2 LP	247	const char *p;
fda2c5d2 LP	248
2ae0858e LP	249	/* If the passed hostname is already valid, then assume the user doesn't know anything about pretty
2ae0858e LP	250	* hostnames, so let's unset the pretty hostname, and just set the passed hostname as static/dynamic
fda2c5d2	251	* hostname. */
2ae0858e LP	252	if (arg_static && hostname_is_valid(hostname, true))
	253	p = ""; /* No pretty hostname (as it is redundant), just a static one */
	254	else
	255	p = hostname; /* Use the passed name as pretty hostname */
fda2c5d2	256
b028f3e4	257	r = set_simple_string(bus, "SetPrettyHostname", p);
dbc4fbae LP	258	if (r < 0)
dbc4fbae LP	259	return r;
2ae0858e LP	260
	261	/* Now that we set the pretty hostname, let's clean up the parameter and use that as static
	262	* hostname. If the hostname was already valid as static hostname, this will only chop off the trailing
	263	* dot if there is one. If it was not valid, then it will be made fully valid by truncating, dropping
629ff674	264	* multiple dots, and dropping weird chars. Note that we clean the name up only if we also are
2ae0858e LP	265	* supposed to set the pretty name. If the pretty name is not being set we assume the user knows what
	266	* he does and pass the name as-is. */
	267	h = strdup(hostname);
	268	if (!h)
	269	return log_oom();
	270
	271	hostname = hostname_cleanup(h); /* Use the cleaned up name as static hostname */
dbc4fbae LP	272	}
dbc4fbae LP	273
960787ae	274	if (arg_static) {
b028f3e4	275	r = set_simple_string(bus, "SetStaticHostname", hostname);
dbc4fbae LP	276	if (r < 0)
	277	return r;
	278	}
	279
960787ae	280	if (arg_transient) {
b028f3e4	281	r = set_simple_string(bus, "SetHostname", hostname);
dbc4fbae LP	282	if (r < 0)
	283	return r;
	284	}
	285
	286	return 0;
	287	}
	288
f46bc484 YW	289	static int set_icon_name(int argc, char *argv, void userdata) {
f46bc484 YW	290	return set_simple_string(userdata, "SetIconName", argv[1]);
dbc4fbae LP	291	}
dbc4fbae LP	292
f46bc484 YW	293	static int set_chassis(int argc, char *argv, void userdata) {
f46bc484 YW	294	return set_simple_string(userdata, "SetChassis", argv[1]);
7871c8e9 LP	295	}
7871c8e9 LP	296
f46bc484 YW	297	static int set_deployment(int argc, char *argv, void userdata) {
f46bc484 YW	298	return set_simple_string(userdata, "SetDeployment", argv[1]);
799298d6 JG	299	}
799298d6 JG	300
f46bc484 YW	301	static int set_location(int argc, char *argv, void userdata) {
f46bc484 YW	302	return set_simple_string(userdata, "SetLocation", argv[1]);
41414fed LP	303	}
41414fed LP	304
f46bc484	305	static int help(void) {
7591abd4 LP	306	printf("%s [OPTIONS...] COMMAND ...\n\n"
7591abd4 LP	307	"Query or change system hostname.\n\n"
dbc4fbae LP	308	" -h --help Show this help\n"
dbc4fbae LP	309	" --version Show package version\n"
7591abd4	310	" --no-ask-password Do not prompt for password\n"
b028f3e4	311	" -H --host=[USER@]HOST Operate on remote host\n"
a86a47ce LP	312	" -M --machine=CONTAINER Operate on local container\n"
	313	" --transient Only set transient hostname\n"
	314	" --static Only set static hostname\n"
	315	" --pretty Only set pretty hostname\n\n"
dbc4fbae	316	"Commands:\n"
7591abd4 LP	317	" status Show current hostname settings\n"
7591abd4 LP	318	" set-hostname NAME Set system hostname\n"
7871c8e9	319	" set-icon-name NAME Set icon name for host\n"
799298d6	320	" set-chassis NAME Set chassis type for host\n"
601185b4	321	" set-deployment NAME Set deployment environment for host\n"
41414fed	322	" set-location NAME Set location for host\n"
601185b4	323	, program_invocation_short_name);
f46bc484 YW	324
	325	return 0;
	326	}
	327
	328	static int verb_help(int argc, char *argv, void userdata) {
	329	return help();
dbc4fbae LP	330	}
	331
	332	static int parse_argv(int argc, char *argv[]) {
	333
	334	enum {
	335	ARG_VERSION = 0x100,
	336	ARG_NO_ASK_PASSWORD,
960787ae ZJS	337	ARG_TRANSIENT,
	338	ARG_STATIC,
	339	ARG_PRETTY
dbc4fbae LP	340	};
	341
	342	static const struct option options[] = {
	343	{ "help", no_argument, NULL, 'h' },
	344	{ "version", no_argument, NULL, ARG_VERSION },
eb9da376 LP	345	{ "transient", no_argument, NULL, ARG_TRANSIENT },
	346	{ "static", no_argument, NULL, ARG_STATIC },
	347	{ "pretty", no_argument, NULL, ARG_PRETTY },
dbc4fbae	348	{ "host", required_argument, NULL, 'H' },
b028f3e4	349	{ "machine", required_argument, NULL, 'M' },
dbc4fbae	350	{ "no-ask-password", no_argument, NULL, ARG_NO_ASK_PASSWORD },
eb9da376	351	{}
dbc4fbae LP	352	};
	353
	354	int c;
	355
	356	assert(argc >= 0);
	357	assert(argv);
	358
601185b4	359	while ((c = getopt_long(argc, argv, "hH:M:", options, NULL)) >= 0)
dbc4fbae LP	360
	361	switch (c) {
	362
	363	case 'h':
f46bc484	364	return help();
dbc4fbae LP	365
dbc4fbae LP	366	case ARG_VERSION:
3f6fd1ba	367	return version();
dbc4fbae	368
b028f3e4 SP	369	case 'H':
	370	arg_transport = BUS_TRANSPORT_REMOTE;
	371	arg_host = optarg;
dbc4fbae LP	372	break;
dbc4fbae LP	373
b028f3e4	374	case 'M':
de33fc62	375	arg_transport = BUS_TRANSPORT_MACHINE;
b028f3e4	376	arg_host = optarg;
dbc4fbae LP	377	break;
dbc4fbae LP	378
960787ae ZJS	379	case ARG_TRANSIENT:
960787ae ZJS	380	arg_transient = true;
dbc4fbae LP	381	break;
dbc4fbae LP	382
960787ae ZJS	383	case ARG_PRETTY:
960787ae ZJS	384	arg_pretty = true;
dbc4fbae LP	385	break;
dbc4fbae LP	386
960787ae ZJS	387	case ARG_STATIC:
960787ae ZJS	388	arg_static = true;
dbc4fbae LP	389	break;
dbc4fbae LP	390
59f432ea LP	391	case ARG_NO_ASK_PASSWORD:
	392	arg_ask_password = false;
	393	break;
	394
dbc4fbae LP	395	case '?':
	396	return -EINVAL;
	397
	398	default:
eb9da376	399	assert_not_reached("Unhandled option");
dbc4fbae	400	}
dbc4fbae	401
dbc4fbae LP	402	return 1;
	403	}
	404
b028f3e4	405	static int hostnamectl_main(sd_bus bus, int argc, char argv[]) {
dbc4fbae	406
f46bc484 YW	407	static const Verb verbs[] = {
	408	{ "status", VERB_ANY, 1, VERB_DEFAULT, show_status },
	409	{ "set-hostname", 2, 2, 0, set_hostname },
	410	{ "set-icon-name", 2, 2, 0, set_icon_name },
	411	{ "set-chassis", 2, 2, 0, set_chassis },
	412	{ "set-deployment", 2, 2, 0, set_deployment },
	413	{ "set-location", 2, 2, 0, set_location },
	414	{ "help", VERB_ANY, VERB_ANY, 0, verb_help }, /* Not documented, but supported since it is created. */
	415	{}
dbc4fbae LP	416	};
dbc4fbae LP	417
f46bc484	418	return dispatch_verb(argc, argv, verbs, bus);
dbc4fbae LP	419	}
	420
	421	int main(int argc, char *argv[]) {
4afd3348	422	_cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
84f6181c	423	int r;
dbc4fbae	424
a9cdc94f	425	setlocale(LC_ALL, "");
dbc4fbae LP	426	log_parse_environment();
	427	log_open();
	428
	429	r = parse_argv(argc, argv);
b028f3e4	430	if (r <= 0)
dbc4fbae	431	goto finish;
b028f3e4	432
266f3e26	433	r = bus_connect_transport(arg_transport, arg_host, false, &bus);
b028f3e4	434	if (r < 0) {
da927ba9	435	log_error_errno(r, "Failed to create bus connection: %m");
dbc4fbae LP	436	goto finish;
	437	}
	438
b028f3e4	439	r = hostnamectl_main(bus, argc, argv);
dbc4fbae LP	440
dbc4fbae LP	441	finish:
5567fafb	442	return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
dbc4fbae	443	}