1 /* SPDX-License-Identifier: LGPL-2.1+ */
12 #include "alloc-util.h"
13 #include "architecture.h"
14 #include "bus-error.h"
16 #include "hostname-util.h"
17 #include "spawn-polkit-agent.h"
18 #include "terminal-util.h"
22 static bool arg_ask_password
= true;
23 static BusTransport arg_transport
= BUS_TRANSPORT_LOCAL
;
24 static char *arg_host
= NULL
;
25 static bool arg_transient
= false;
26 static bool arg_pretty
= false;
27 static bool arg_static
= false;
29 typedef struct StatusInfo
{
31 const char *static_hostname
;
32 const char *pretty_hostname
;
33 const char *icon_name
;
35 const char *deployment
;
37 const char *kernel_name
;
38 const char *kernel_release
;
39 const char *os_pretty_name
;
40 const char *os_cpe_name
;
41 const char *virtualization
;
42 const char *architecture
;
46 static void print_status_info(StatusInfo
*i
) {
47 sd_id128_t mid
= {}, bid
= {};
52 printf(" Static hostname: %s\n", strna(i
->static_hostname
));
54 if (!isempty(i
->pretty_hostname
) &&
55 !streq_ptr(i
->pretty_hostname
, i
->static_hostname
))
56 printf(" Pretty hostname: %s\n", i
->pretty_hostname
);
58 if (!isempty(i
->hostname
) &&
59 !streq_ptr(i
->hostname
, i
->static_hostname
))
60 printf("Transient hostname: %s\n", i
->hostname
);
62 if (!isempty(i
->icon_name
))
63 printf(" Icon name: %s\n",
66 if (!isempty(i
->chassis
))
67 printf(" Chassis: %s\n",
70 if (!isempty(i
->deployment
))
71 printf(" Deployment: %s\n", i
->deployment
);
73 if (!isempty(i
->location
))
74 printf(" Location: %s\n", i
->location
);
76 r
= sd_id128_get_machine(&mid
);
78 printf(" Machine ID: " SD_ID128_FORMAT_STR
"\n", SD_ID128_FORMAT_VAL(mid
));
80 r
= sd_id128_get_boot(&bid
);
82 printf(" Boot ID: " SD_ID128_FORMAT_STR
"\n", SD_ID128_FORMAT_VAL(bid
));
84 if (!isempty(i
->virtualization
))
85 printf(" Virtualization: %s\n", i
->virtualization
);
87 if (!isempty(i
->os_pretty_name
)) {
88 _cleanup_free_
char *formatted
= NULL
;
89 const char *t
= i
->os_pretty_name
;
92 if (terminal_urlify(i
->home_url
, i
->os_pretty_name
, &formatted
) >= 0)
96 printf(" Operating System: %s\n", t
);
99 if (!isempty(i
->os_cpe_name
))
100 printf(" CPE OS Name: %s\n", i
->os_cpe_name
);
102 if (!isempty(i
->kernel_name
) && !isempty(i
->kernel_release
))
103 printf(" Kernel: %s %s\n", i
->kernel_name
, i
->kernel_release
);
105 if (!isempty(i
->architecture
))
106 printf(" Architecture: %s\n", i
->architecture
);
110 static int show_one_name(sd_bus
*bus
, const char* attr
) {
111 _cleanup_(sd_bus_message_unrefp
) sd_bus_message
*reply
= NULL
;
112 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
116 r
= sd_bus_get_property(
118 "org.freedesktop.hostname1",
119 "/org/freedesktop/hostname1",
120 "org.freedesktop.hostname1",
122 &error
, &reply
, "s");
124 return log_error_errno(r
, "Could not get property: %s", bus_error_message(&error
, r
));
126 r
= sd_bus_message_read(reply
, "s", &s
);
128 return bus_log_parse_error(r
);
135 static int show_all_names(sd_bus
*bus
, sd_bus_error
*error
) {
136 StatusInfo info
= {};
138 static const struct bus_properties_map hostname_map
[] = {
139 { "Hostname", "s", NULL
, offsetof(StatusInfo
, hostname
) },
140 { "StaticHostname", "s", NULL
, offsetof(StatusInfo
, static_hostname
) },
141 { "PrettyHostname", "s", NULL
, offsetof(StatusInfo
, pretty_hostname
) },
142 { "IconName", "s", NULL
, offsetof(StatusInfo
, icon_name
) },
143 { "Chassis", "s", NULL
, offsetof(StatusInfo
, chassis
) },
144 { "Deployment", "s", NULL
, offsetof(StatusInfo
, deployment
) },
145 { "Location", "s", NULL
, offsetof(StatusInfo
, location
) },
146 { "KernelName", "s", NULL
, offsetof(StatusInfo
, kernel_name
) },
147 { "KernelRelease", "s", NULL
, offsetof(StatusInfo
, kernel_release
) },
148 { "OperatingSystemPrettyName", "s", NULL
, offsetof(StatusInfo
, os_pretty_name
) },
149 { "OperatingSystemCPEName", "s", NULL
, offsetof(StatusInfo
, os_cpe_name
) },
150 { "HomeURL", "s", NULL
, offsetof(StatusInfo
, home_url
) },
154 static const struct bus_properties_map manager_map
[] = {
155 { "Virtualization", "s", NULL
, offsetof(StatusInfo
, virtualization
) },
156 { "Architecture", "s", NULL
, offsetof(StatusInfo
, architecture
) },
160 _cleanup_(sd_bus_message_unrefp
) sd_bus_message
*host_message
= NULL
, *manager_message
= NULL
;
163 r
= bus_map_all_properties(bus
,
164 "org.freedesktop.hostname1",
165 "/org/freedesktop/hostname1",
174 r
= bus_map_all_properties(bus
,
175 "org.freedesktop.systemd1",
176 "/org/freedesktop/systemd1",
183 print_status_info(&info
);
188 static int show_status(int argc
, char **argv
, void *userdata
) {
189 sd_bus
*bus
= userdata
;
192 if (arg_pretty
|| arg_static
|| arg_transient
) {
195 if (!!arg_static
+ !!arg_pretty
+ !!arg_transient
> 1) {
196 log_error("Cannot query more than one name type at a time");
200 attr
= arg_pretty
? "PrettyHostname" :
201 arg_static
? "StaticHostname" : "Hostname";
203 return show_one_name(bus
, attr
);
205 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
207 r
= show_all_names(bus
, &error
);
209 return log_error_errno(r
, "Failed to query system properties: %s", bus_error_message(&error
, r
));
215 static int set_simple_string(sd_bus
*bus
, const char *method
, const char *value
) {
216 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
219 polkit_agent_open_if_enabled(arg_transport
, arg_ask_password
);
221 r
= sd_bus_call_method(
223 "org.freedesktop.hostname1",
224 "/org/freedesktop/hostname1",
225 "org.freedesktop.hostname1",
228 "sb", value
, arg_ask_password
);
230 return log_error_errno(r
, "Could not set property: %s", bus_error_message(&error
, -r
));
235 static int set_hostname(int argc
, char **argv
, void *userdata
) {
236 _cleanup_free_
char *h
= NULL
;
237 const char *hostname
= argv
[1];
238 sd_bus
*bus
= userdata
;
241 if (!arg_pretty
&& !arg_static
&& !arg_transient
)
242 arg_pretty
= arg_static
= arg_transient
= true;
247 /* If the passed hostname is already valid, then assume the user doesn't know anything about pretty
248 * hostnames, so let's unset the pretty hostname, and just set the passed hostname as static/dynamic
250 if (arg_static
&& hostname_is_valid(hostname
, true))
251 p
= ""; /* No pretty hostname (as it is redundant), just a static one */
253 p
= hostname
; /* Use the passed name as pretty hostname */
255 r
= set_simple_string(bus
, "SetPrettyHostname", p
);
259 /* Now that we set the pretty hostname, let's clean up the parameter and use that as static
260 * hostname. If the hostname was already valid as static hostname, this will only chop off the trailing
261 * dot if there is one. If it was not valid, then it will be made fully valid by truncating, dropping
262 * multiple dots, and dropping weird chars. Note that we clean the name up only if we also are
263 * supposed to set the pretty name. If the pretty name is not being set we assume the user knows what
264 * he does and pass the name as-is. */
265 h
= strdup(hostname
);
269 hostname
= hostname_cleanup(h
); /* Use the cleaned up name as static hostname */
273 r
= set_simple_string(bus
, "SetStaticHostname", hostname
);
279 r
= set_simple_string(bus
, "SetHostname", hostname
);
287 static int set_icon_name(int argc
, char **argv
, void *userdata
) {
288 return set_simple_string(userdata
, "SetIconName", argv
[1]);
291 static int set_chassis(int argc
, char **argv
, void *userdata
) {
292 return set_simple_string(userdata
, "SetChassis", argv
[1]);
295 static int set_deployment(int argc
, char **argv
, void *userdata
) {
296 return set_simple_string(userdata
, "SetDeployment", argv
[1]);
299 static int set_location(int argc
, char **argv
, void *userdata
) {
300 return set_simple_string(userdata
, "SetLocation", argv
[1]);
303 static int help(void) {
304 printf("%s [OPTIONS...] COMMAND ...\n\n"
305 "Query or change system hostname.\n\n"
306 " -h --help Show this help\n"
307 " --version Show package version\n"
308 " --no-ask-password Do not prompt for password\n"
309 " -H --host=[USER@]HOST Operate on remote host\n"
310 " -M --machine=CONTAINER Operate on local container\n"
311 " --transient Only set transient hostname\n"
312 " --static Only set static hostname\n"
313 " --pretty Only set pretty hostname\n\n"
315 " status Show current hostname settings\n"
316 " set-hostname NAME Set system hostname\n"
317 " set-icon-name NAME Set icon name for host\n"
318 " set-chassis NAME Set chassis type for host\n"
319 " set-deployment NAME Set deployment environment for host\n"
320 " set-location NAME Set location for host\n"
321 , program_invocation_short_name
);
326 static int verb_help(int argc
, char **argv
, void *userdata
) {
330 static int parse_argv(int argc
, char *argv
[]) {
340 static const struct option options
[] = {
341 { "help", no_argument
, NULL
, 'h' },
342 { "version", no_argument
, NULL
, ARG_VERSION
},
343 { "transient", no_argument
, NULL
, ARG_TRANSIENT
},
344 { "static", no_argument
, NULL
, ARG_STATIC
},
345 { "pretty", no_argument
, NULL
, ARG_PRETTY
},
346 { "host", required_argument
, NULL
, 'H' },
347 { "machine", required_argument
, NULL
, 'M' },
348 { "no-ask-password", no_argument
, NULL
, ARG_NO_ASK_PASSWORD
},
357 while ((c
= getopt_long(argc
, argv
, "hH:M:", options
, NULL
)) >= 0)
368 arg_transport
= BUS_TRANSPORT_REMOTE
;
373 arg_transport
= BUS_TRANSPORT_MACHINE
;
378 arg_transient
= true;
389 case ARG_NO_ASK_PASSWORD
:
390 arg_ask_password
= false;
397 assert_not_reached("Unhandled option");
403 static int hostnamectl_main(sd_bus
*bus
, int argc
, char *argv
[]) {
405 static const Verb verbs
[] = {
406 { "status", VERB_ANY
, 1, VERB_DEFAULT
, show_status
},
407 { "set-hostname", 2, 2, 0, set_hostname
},
408 { "set-icon-name", 2, 2, 0, set_icon_name
},
409 { "set-chassis", 2, 2, 0, set_chassis
},
410 { "set-deployment", 2, 2, 0, set_deployment
},
411 { "set-location", 2, 2, 0, set_location
},
412 { "help", VERB_ANY
, VERB_ANY
, 0, verb_help
}, /* Not documented, but supported since it is created. */
416 return dispatch_verb(argc
, argv
, verbs
, bus
);
419 int main(int argc
, char *argv
[]) {
420 _cleanup_(sd_bus_flush_close_unrefp
) sd_bus
*bus
= NULL
;
423 setlocale(LC_ALL
, "");
424 log_parse_environment();
427 r
= parse_argv(argc
, argv
);
431 r
= bus_connect_transport(arg_transport
, arg_host
, false, &bus
);
433 log_error_errno(r
, "Failed to create bus connection: %m");
437 r
= hostnamectl_main(bus
, argc
, argv
);
440 return r
< 0 ? EXIT_FAILURE
: EXIT_SUCCESS
;