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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 02:25:50 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 02:25:50 +0000 |
commit | 19f4f86bfed21c5326ed2acebe1163f3a83e832b (patch) | |
tree | d59b9989ce55ed23693e80974d94c856f1c2c8b1 /src/hostname/hostnamectl.c | |
parent | Initial commit. (diff) | |
download | systemd-19f4f86bfed21c5326ed2acebe1163f3a83e832b.tar.xz systemd-19f4f86bfed21c5326ed2acebe1163f3a83e832b.zip |
Adding upstream version 241.upstream/241upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/hostname/hostnamectl.c')
-rw-r--r-- | src/hostname/hostnamectl.c | 449 |
1 files changed, 449 insertions, 0 deletions
diff --git a/src/hostname/hostnamectl.c b/src/hostname/hostnamectl.c new file mode 100644 index 0000000..7f9bb49 --- /dev/null +++ b/src/hostname/hostnamectl.c @@ -0,0 +1,449 @@ +/* SPDX-License-Identifier: LGPL-2.1+ */ + +#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 "main-func.h" +#include "pretty-print.h" +#include "spawn-polkit-agent.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) + return log_error_errno(r, "Could not set property: %s", bus_error_message(&error, -r)); + + return 0; +} + +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) { + _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" + "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" + "\nSee the %s for details.\n" + , program_invocation_short_name + , 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 + }; + + 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); +} + +static int run(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) + return r; + + r = bus_connect_transport(arg_transport, arg_host, false, &bus); + if (r < 0) + return log_error_errno(r, "Failed to create bus connection: %m"); + + return hostnamectl_main(bus, argc, argv); +} + +DEFINE_MAIN_FUNCTION(run); |