Adding upstream version 255.4.upstream/255.4

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 740 insertions, 0 deletions

diff --git a/src/hostname/hostnamectl.c b/src/hostname/hostnamectl.c
new file mode 100644
index 0000000..14fc160
--- /dev/null
+++ b/src/hostname/hostnamectl.c
@@ -0,0 +1,740 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include <getopt.h>
+#include <locale.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "sd-bus.h"
+#include "sd-id128.h"
+
+#include "alloc-util.h"
+#include "architecture.h"
+#include "build.h"
+#include "bus-common-errors.h"
+#include "bus-error.h"
+#include "bus-locator.h"
+#include "bus-map-properties.h"
+#include "format-table.h"
+#include "hostname-setup.h"
+#include "hostname-util.h"
+#include "json.h"
+#include "main-func.h"
+#include "parse-argument.h"
+#include "pretty-print.h"
+#include "spawn-polkit-agent.h"
+#include "terminal-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;
+static JsonFormatFlags arg_json_format_flags = JSON_FORMAT_OFF;
+
+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;
+        usec_t os_support_end;
+        const char *virtualization;
+        const char *architecture;
+        const char *home_url;
+        const char *hardware_vendor;
+        const char *hardware_model;
+        const char *firmware_version;
+        usec_t firmware_date;
+        sd_id128_t machine_id;
+        sd_id128_t boot_id;
+} StatusInfo;
+
+static const char* chassis_string_to_glyph(const char *chassis) {
+        if (streq_ptr(chassis, "laptop"))
+                return u8"💻"; /* Personal Computer */
+        if (streq_ptr(chassis, "desktop"))
+                return u8"🖥️"; /* Desktop Computer */
+        if (streq_ptr(chassis, "server"))
+                return u8"🖳"; /* Old Personal Computer */
+        if (streq_ptr(chassis, "tablet"))
+                return u8"具"; /* Ideograph tool, implement; draw up, write, looks vaguely tabletty */
+        if (streq_ptr(chassis, "watch"))
+                return u8"⌚"; /* Watch */
+        if (streq_ptr(chassis, "handset"))
+                return u8"🕻"; /* Left Hand Telephone Receiver */
+        if (streq_ptr(chassis, "vm"))
+                return u8"🖴"; /* Hard disk */
+        if (streq_ptr(chassis, "container"))
+                return u8"☐"; /* Ballot Box  */
+        return NULL;
+}
+
+static const char *os_support_end_color(usec_t n, usec_t eol) {
+        usec_t left;
+
+        /* If the end of support is over, color output in red. If only a month is left, color output in
+         * yellow. If more than a year is left, color green. In between just show in regular color. */
+
+        if (n >= eol)
+                return ANSI_HIGHLIGHT_RED;
+        left = eol - n;
+        if (left < USEC_PER_MONTH)
+                return ANSI_HIGHLIGHT_YELLOW;
+        if (left > USEC_PER_YEAR)
+                return ANSI_HIGHLIGHT_GREEN;
+
+        return NULL;
+}
+
+static int print_status_info(StatusInfo *i) {
+        _cleanup_(table_unrefp) Table *table = NULL;
+        TableCell *cell;
+        int r;
+
+        assert(i);
+
+        table = table_new_vertical();
+        if (!table)
+                return log_oom();
+
+        assert_se(cell = table_get_cell(table, 0, 0));
+        (void) table_set_ellipsize_percent(table, cell, 100);
+
+        table_set_ersatz_string(table, TABLE_ERSATZ_UNSET);
+
+        r = table_add_many(table,
+                           TABLE_FIELD, "Static hostname",
+                           TABLE_STRING, i->static_hostname);
+        if (r < 0)
+                return table_log_add_error(r);
+
+        if (!isempty(i->pretty_hostname) &&
+            !streq_ptr(i->pretty_hostname, i->static_hostname)) {
+                r = table_add_many(table,
+                                   TABLE_FIELD, "Pretty hostname",
+                                   TABLE_STRING, i->pretty_hostname);
+                if (r < 0)
+                        return table_log_add_error(r);
+        }
+
+        if (!isempty(i->hostname) &&
+            !streq_ptr(i->hostname, i->static_hostname)) {
+                r = table_add_many(table,
+                                   TABLE_FIELD, "Transient hostname",
+                                   TABLE_STRING, i->hostname);
+                if (r < 0)
+                        return table_log_add_error(r);
+        }
+
+        if (!isempty(i->icon_name)) {
+                r = table_add_many(table,
+                                   TABLE_FIELD, "Icon name",
+                                   TABLE_STRING, i->icon_name);
+                if (r < 0)
+                        return table_log_add_error(r);
+        }
+
+        if (!isempty(i->chassis)) {
+                /* Possibly add a pretty symbol. Let's not bother with non-unicode fallbacks, because this is
+                 * just a prettification and we can't really express this with ASCII anyway. */
+                const char *v = chassis_string_to_glyph(i->chassis);
+                if (v)
+                        v = strjoina(i->chassis, " ", v);
+
+                r = table_add_many(table,
+                                   TABLE_FIELD, "Chassis",
+                                   TABLE_STRING, v ?: i->chassis);
+                if (r < 0)
+                        return table_log_add_error(r);
+        }
+
+        if (!isempty(i->deployment)) {
+                r = table_add_many(table,
+                                   TABLE_FIELD, "Deployment",
+                                   TABLE_STRING, i->deployment);
+                if (r < 0)
+                        return table_log_add_error(r);
+        }
+
+        if (!isempty(i->location)) {
+                r = table_add_many(table,
+                                   TABLE_FIELD, "Location",
+                                   TABLE_STRING, i->location);
+                if (r < 0)
+                        return table_log_add_error(r);
+        }
+
+        if (!sd_id128_is_null(i->machine_id)) {
+                r = table_add_many(table,
+                                   TABLE_FIELD, "Machine ID",
+                                   TABLE_ID128, i->machine_id);
+                if (r < 0)
+                        return table_log_add_error(r);
+        }
+
+        if (!sd_id128_is_null(i->boot_id)) {
+                r = table_add_many(table,
+                                   TABLE_FIELD, "Boot ID",
+                                   TABLE_ID128, i->boot_id);
+                if (r < 0)
+                        return table_log_add_error(r);
+        }
+
+        if (!isempty(i->virtualization)) {
+                r = table_add_many(table,
+                                   TABLE_FIELD, "Virtualization",
+                                   TABLE_STRING, i->virtualization);
+                if (r < 0)
+                        return table_log_add_error(r);
+        }
+
+        if (!isempty(i->os_pretty_name)) {
+                r = table_add_many(table,
+                                   TABLE_FIELD, "Operating System",
+                                   TABLE_STRING, i->os_pretty_name,
+                                   TABLE_SET_URL, i->home_url);
+                if (r < 0)
+                        return table_log_add_error(r);
+        }
+
+        if (!isempty(i->os_cpe_name)) {
+                r = table_add_many(table,
+                                   TABLE_FIELD, "CPE OS Name",
+                                   TABLE_STRING, i->os_cpe_name);
+                if (r < 0)
+                        return table_log_add_error(r);
+        }
+
+        if (i->os_support_end != USEC_INFINITY) {
+                usec_t n = now(CLOCK_REALTIME);
+
+                r = table_add_many(table,
+                                   TABLE_FIELD, "OS Support End",
+                                   TABLE_TIMESTAMP_DATE, i->os_support_end,
+                                   TABLE_FIELD, n < i->os_support_end ? "OS Support Remaining" : "OS Support Expired",
+                                   TABLE_TIMESPAN_DAY, n < i->os_support_end ? i->os_support_end - n : n - i->os_support_end,
+                                   TABLE_SET_COLOR, os_support_end_color(n, i->os_support_end));
+                if (r < 0)
+                        return table_log_add_error(r);
+        }
+
+        if (!isempty(i->kernel_name) && !isempty(i->kernel_release)) {
+                const char *v;
+
+                v = strjoina(i->kernel_name, " ", i->kernel_release);
+                r = table_add_many(table,
+                                   TABLE_FIELD, "Kernel",
+                                   TABLE_STRING, v);
+                if (r < 0)
+                        return table_log_add_error(r);
+        }
+
+        if (!isempty(i->architecture)) {
+                r = table_add_many(table,
+                                   TABLE_FIELD, "Architecture",
+                                   TABLE_STRING, i->architecture);
+                if (r < 0)
+                        return table_log_add_error(r);
+        }
+
+        if (!isempty(i->hardware_vendor)) {
+                r = table_add_many(table,
+                                   TABLE_FIELD, "Hardware Vendor",
+                                   TABLE_STRING, i->hardware_vendor);
+                if (r < 0)
+                        return table_log_add_error(r);
+        }
+
+        if (!isempty(i->hardware_model)) {
+                r = table_add_many(table,
+                                   TABLE_FIELD, "Hardware Model",
+                                   TABLE_STRING, i->hardware_model);
+                if (r < 0)
+                        return table_log_add_error(r);
+        }
+
+        if (!isempty(i->firmware_version)) {
+                r = table_add_many(table,
+                                   TABLE_FIELD, "Firmware Version",
+                                   TABLE_STRING, i->firmware_version);
+                if (r < 0)
+                        return table_log_add_error(r);
+        }
+
+        if (timestamp_is_set(i->firmware_date)) {
+                usec_t n = now(CLOCK_REALTIME);
+
+                r = table_add_many(table,
+                                   TABLE_FIELD, "Firmware Date",
+                                   TABLE_TIMESTAMP_DATE, i->firmware_date);
+                if (r < 0)
+                        return table_log_add_error(r);
+
+                if (i->firmware_date < n) {
+                        r = table_add_many(table,
+                                           TABLE_FIELD, "Firmware Age",
+                                           TABLE_TIMESPAN_DAY, n - i->firmware_date,
+                                           TABLE_SET_COLOR, n - i->firmware_date > USEC_PER_YEAR*2 ? ANSI_HIGHLIGHT_YELLOW : NULL);
+                        if (r < 0)
+                                return table_log_add_error(r);
+                }
+        }
+
+        r = table_print(table, NULL);
+        if (r < 0)
+                return table_log_print_error(r);
+
+        return 0;
+}
+
+static int get_one_name(sd_bus *bus, const char* attr, char **ret) {
+        _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;
+
+        assert(bus);
+        assert(attr);
+
+        /* This obtains one string property, and copy it if 'ret' is set, or print it otherwise. */
+
+        r = bus_get_property(bus, bus_hostname, 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);
+
+        if (ret) {
+                char *str;
+
+                str = strdup(s);
+                if (!str)
+                        return log_oom();
+
+                *ret = str;
+        } else
+                printf("%s\n", s);
+
+        return 0;
+}
+
+static int show_all_names(sd_bus *bus) {
+        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)      },
+                { "OperatingSystemSupportEnd", "t",  NULL,          offsetof(StatusInfo, os_support_end)   },
+                { "HomeURL",                   "s",  NULL,          offsetof(StatusInfo, home_url)         },
+                { "HardwareVendor",            "s",  NULL,          offsetof(StatusInfo, hardware_vendor)  },
+                { "HardwareModel",             "s",  NULL,          offsetof(StatusInfo, hardware_model)   },
+                { "FirmwareVersion",           "s",  NULL,          offsetof(StatusInfo, firmware_version) },
+                { "FirmwareDate",              "t",  NULL,          offsetof(StatusInfo, firmware_date)    },
+                { "MachineID",                 "ay", bus_map_id128, offsetof(StatusInfo, machine_id)       },
+                { "BootID",                    "ay", bus_map_id128, offsetof(StatusInfo, boot_id)          },
+                {}
+        }, 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;
+        _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_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 log_error_errno(r, "Failed to query system properties: %s", bus_error_message(&error, r));
+
+        r = bus_map_all_properties(bus,
+                                   "org.freedesktop.systemd1",
+                                   "/org/freedesktop/systemd1",
+                                   manager_map,
+                                   0,
+                                   &error,
+                                   &manager_message,
+                                   &info);
+        if (r < 0)
+                return log_error_errno(r, "Failed to query system properties: %s", bus_error_message(&error, r));
+
+        /* For older version of hostnamed. */
+        if (!arg_host) {
+                if (sd_id128_is_null(info.machine_id))
+                        (void) sd_id128_get_machine(&info.machine_id);
+                if (sd_id128_is_null(info.boot_id))
+                        (void) sd_id128_get_boot(&info.boot_id);
+        }
+
+        return print_status_info(&info);
+}
+
+static int get_hostname_based_on_flag(sd_bus *bus) {
+        const char *attr;
+
+        if (!!arg_static + !!arg_pretty + !!arg_transient > 1)
+                return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
+                                       "Cannot query more than one name type at a time");
+
+        attr = arg_pretty ? "PrettyHostname" :
+                arg_static ? "StaticHostname" : "Hostname";
+
+        return get_one_name(bus, attr, NULL);
+}
+
+static int show_status(int argc, char **argv, void *userdata) {
+        sd_bus *bus = userdata;
+        int r;
+
+        if (arg_json_format_flags != JSON_FORMAT_OFF) {
+                _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+                _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
+                _cleanup_(json_variant_unrefp) JsonVariant *v = NULL;
+                const char *text = NULL;
+
+                r = bus_call_method(bus, bus_hostname, "Describe", &error, &reply, NULL);
+                if (r < 0)
+                        return log_error_errno(r, "Could not get description: %s", bus_error_message(&error, r));
+
+                r = sd_bus_message_read(reply, "s", &text);
+                if (r < 0)
+                        return bus_log_parse_error(r);
+
+                r = json_parse(text, 0, &v, NULL, NULL);
+                if (r < 0)
+                        return log_error_errno(r, "Failed to parse JSON: %m");
+
+                json_variant_dump(v, arg_json_format_flags, NULL, NULL);
+                return 0;
+        }
+
+        if (arg_pretty || arg_static || arg_transient)
+                return get_hostname_based_on_flag(bus);
+
+        return show_all_names(bus);
+}
+
+
+static int set_simple_string_internal(sd_bus *bus, sd_bus_error *error, const char *target, const char *method, const char *value) {
+        _cleanup_(sd_bus_error_free) sd_bus_error e = SD_BUS_ERROR_NULL;
+        int r;
+
+        polkit_agent_open_if_enabled(arg_transport, arg_ask_password);
+
+        if (!error)
+                error = &e;
+
+        r = bus_call_method(bus, bus_hostname, method, error, NULL, "sb", value, arg_ask_password);
+        if (r < 0)
+                return log_error_errno(r, "Could not set %s: %s", target, bus_error_message(error, r));
+
+        return 0;
+}
+
+static int set_simple_string(sd_bus *bus, const char *target, const char *method, const char *value) {
+        return set_simple_string_internal(bus, NULL, target, method, value);
+}
+
+static int set_hostname(int argc, char **argv, void *userdata) {
+        _cleanup_free_ char *h = NULL;
+        const char *hostname = argv[1];
+        sd_bus *bus = userdata;
+        bool implicit = false, show_hint = false;
+        int r, ret = 0;
+
+        if (!arg_pretty && !arg_static && !arg_transient)
+                arg_pretty = arg_static = arg_transient = implicit = true;
+
+        if (!implicit && !arg_static && arg_transient) {
+                _cleanup_free_ char *source = NULL;
+
+                r = get_one_name(bus, "HostnameSource", &source);
+                if (r < 0)
+                        return r;
+
+                if (hostname_source_from_string(source) == HOSTNAME_STATIC)
+                        log_info("Hint: static hostname is already set, so the specified transient hostname will not be used.");
+        }
+
+        if (arg_pretty) {
+                _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+                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 (implicit && hostname_is_valid(hostname, VALID_HOSTNAME_TRAILING_DOT))
+                        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_internal(bus, &error, "pretty hostname", "SetPrettyHostname", p);
+                if (r < 0) {
+                        if (implicit &&
+                            sd_bus_error_has_names(&error,
+                                                   BUS_ERROR_FILE_IS_PROTECTED,
+                                                   BUS_ERROR_READ_ONLY_FILESYSTEM)) {
+                                show_hint = true;
+                                ret = r;
+                        } else
+                                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
+                 * they are doing 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) {
+                _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+
+                r = set_simple_string_internal(bus, &error, "static hostname", "SetStaticHostname", hostname);
+                if (r < 0) {
+                        if (implicit &&
+                            sd_bus_error_has_names(&error,
+                                                   BUS_ERROR_FILE_IS_PROTECTED,
+                                                   BUS_ERROR_READ_ONLY_FILESYSTEM)) {
+                                show_hint = true;
+                                ret = r;
+                        } else
+                                return r;
+                }
+        }
+
+        if (arg_transient) {
+                r = set_simple_string(bus, "transient hostname", "SetHostname", hostname);
+                if (r < 0)
+                        return r;
+        }
+
+        if (show_hint)
+                log_info("Hint: use --transient option when /etc/machine-info or /etc/hostname cannot be modified (e.g. located in read-only filesystem).");
+
+        return ret;
+}
+
+static int get_or_set_hostname(int argc, char **argv, void *userdata) {
+        return argc == 1 ? get_hostname_based_on_flag(userdata) :
+                           set_hostname(argc, argv, userdata);
+}
+
+static int get_or_set_icon_name(int argc, char **argv, void *userdata) {
+        return argc == 1 ? get_one_name(userdata, "IconName", NULL) :
+                           set_simple_string(userdata, "icon", "SetIconName", argv[1]);
+}
+
+static int get_or_set_chassis(int argc, char **argv, void *userdata) {
+        return argc == 1 ? get_one_name(userdata, "Chassis", NULL) :
+                           set_simple_string(userdata, "chassis", "SetChassis", argv[1]);
+}
+
+static int get_or_set_deployment(int argc, char **argv, void *userdata) {
+        return argc == 1 ? get_one_name(userdata, "Deployment", NULL) :
+                           set_simple_string(userdata, "deployment", "SetDeployment", argv[1]);
+}
+
+static int get_or_set_location(int argc, char **argv, void *userdata) {
+        return argc == 1 ? get_one_name(userdata, "Location", NULL) :
+                           set_simple_string(userdata, "location", "SetLocation", argv[1]);
+}
+
+static int help(void) {
+        _cleanup_free_ char *link = NULL;
+        int r;
+
+        r = terminal_urlify_man("hostnamectl", "1", &link);
+        if (r < 0)
+                return log_oom();
+
+        printf("%s [OPTIONS...] COMMAND ...\n\n"
+               "%sQuery or change system hostname.%s\n"
+               "\nCommands:\n"
+               "  status                 Show current hostname settings\n"
+               "  hostname [NAME]        Get/set system hostname\n"
+               "  icon-name [NAME]       Get/set icon name for host\n"
+               "  chassis [NAME]         Get/set chassis type for host\n"
+               "  deployment [NAME]      Get/set deployment environment for host\n"
+               "  location [NAME]        Get/set location for host\n"
+               "\nOptions:\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"
+               "     --json=pretty|short|off\n"
+               "                         Generate JSON output\n"
+               "\nSee the %s for details.\n",
+               program_invocation_short_name,
+               ansi_highlight(),
+               ansi_normal(),
+               link);
+
+        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,
+                ARG_JSON,
+        };
+
+        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 },
+                { "json",            required_argument, NULL, ARG_JSON            },
+                {}
+        };
+
+        int c, r;
+
+        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 ARG_JSON:
+                        r = parse_json_argument(optarg, &arg_json_format_flags);
+                        if (r <= 0)
+                                return r;
+
+                        break;
+
+                case '?':
+                        return -EINVAL;
+
+                default:
+                        assert_not_reached();
+                }
+
+        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           },
+                { "hostname",       VERB_ANY, 2,        0,            get_or_set_hostname   },
+                { "set-hostname",   2,        2,        0,            get_or_set_hostname   }, /* obsolete */
+                { "icon-name",      VERB_ANY, 2,        0,            get_or_set_icon_name  },
+                { "set-icon-name",  2,        2,        0,            get_or_set_icon_name  }, /* obsolete */
+                { "chassis",        VERB_ANY, 2,        0,            get_or_set_chassis    },
+                { "set-chassis",    2,        2,        0,            get_or_set_chassis    }, /* obsolete */
+                { "deployment",     VERB_ANY, 2,        0,            get_or_set_deployment },
+                { "set-deployment", 2,        2,        0,            get_or_set_deployment }, /* obsolete */
+                { "location",       VERB_ANY, 2,        0,            get_or_set_location   },
+                { "set-location",   2,        2,        0,            get_or_set_location   }, /* obsolete */
+                { "help",           VERB_ANY, VERB_ANY, 0,            verb_help             }, /* Not documented, but supported since it is created. */
+                {}
+        };
+
+        return dispatch_verb(argc, argv, verbs, bus);
+}
+
+static int run(int argc, char *argv[]) {
+        _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
+        int r;
+
+        setlocale(LC_ALL, "");
+        log_setup();
+
+        r = parse_argv(argc, argv);
+        if (r <= 0)
+                return r;
+
+        r = bus_connect_transport(arg_transport, arg_host, RUNTIME_SCOPE_SYSTEM, &bus);
+        if (r < 0)
+                return bus_log_connect_error(r, arg_transport);
+
+        return hostnamectl_main(bus, argc, argv);
+}
+
+DEFINE_MAIN_FUNCTION(run);