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dbc4fbae LP |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2012 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU Lesser General Public License as published by | |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | Lesser General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU Lesser General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
22 | #include <stdlib.h> | |
23 | #include <stdbool.h> | |
dbc4fbae | 24 | #include <getopt.h> |
a9cdc94f | 25 | #include <locale.h> |
dbc4fbae | 26 | #include <string.h> |
dbc4fbae | 27 | |
b028f3e4 | 28 | #include "sd-bus.h" |
958b66ea LP |
29 | #include "sd-id128.h" |
30 | #include "hostname-util.h" | |
b028f3e4 SP |
31 | #include "bus-util.h" |
32 | #include "bus-error.h" | |
dbc4fbae LP |
33 | #include "util.h" |
34 | #include "spawn-polkit-agent.h" | |
35 | #include "build.h" | |
d9d93745 | 36 | #include "architecture.h" |
dbc4fbae | 37 | |
dbc4fbae | 38 | static bool arg_ask_password = true; |
b028f3e4 | 39 | static BusTransport arg_transport = BUS_TRANSPORT_LOCAL; |
7085053a | 40 | static char *arg_host = NULL; |
960787ae ZJS |
41 | static bool arg_transient = false; |
42 | static bool arg_pretty = false; | |
43 | static bool arg_static = false; | |
dbc4fbae | 44 | |
46e65dcc LP |
45 | static void polkit_agent_open_if_enabled(void) { |
46 | ||
47 | /* Open the polkit agent as a child process if necessary */ | |
48 | if (!arg_ask_password) | |
49 | return; | |
50 | ||
51 | if (arg_transport != BUS_TRANSPORT_LOCAL) | |
52 | return; | |
53 | ||
54 | polkit_agent_open(); | |
55 | } | |
56 | ||
dbc4fbae | 57 | typedef struct StatusInfo { |
b028f3e4 SP |
58 | char *hostname; |
59 | char *static_hostname; | |
60 | char *pretty_hostname; | |
61 | char *icon_name; | |
62 | char *chassis; | |
799298d6 | 63 | char *deployment; |
41414fed | 64 | char *location; |
fa4f8f9b DH |
65 | char *kernel_name; |
66 | char *kernel_release; | |
3448456b DH |
67 | char *os_pretty_name; |
68 | char *os_cpe_name; | |
e9a2e453 LP |
69 | char *virtualization; |
70 | char *architecture; | |
dbc4fbae LP |
71 | } StatusInfo; |
72 | ||
73 | static void print_status_info(StatusInfo *i) { | |
39883f62 | 74 | sd_id128_t mid = {}, bid = {}; |
dbc4fbae | 75 | int r; |
dbc4fbae LP |
76 | |
77 | assert(i); | |
78 | ||
e9a2e453 | 79 | printf(" Static hostname: %s\n", strna(i->static_hostname)); |
dbc4fbae | 80 | |
c0b21b96 LP |
81 | if (!isempty(i->pretty_hostname) && |
82 | !streq_ptr(i->pretty_hostname, i->static_hostname)) | |
e9a2e453 | 83 | printf(" Pretty hostname: %s\n", i->pretty_hostname); |
c0b21b96 LP |
84 | |
85 | if (!isempty(i->hostname) && | |
86 | !streq_ptr(i->hostname, i->static_hostname)) | |
e9a2e453 | 87 | printf("Transient hostname: %s\n", i->hostname); |
dbc4fbae | 88 | |
41414fed LP |
89 | if (!isempty(i->icon_name)) |
90 | printf(" Icon name: %s\n", | |
91 | strna(i->icon_name)); | |
92 | ||
93 | if (!isempty(i->chassis)) | |
94 | printf(" Chassis: %s\n", | |
95 | strna(i->chassis)); | |
96 | ||
97 | if (!isempty(i->deployment)) | |
98 | printf(" Deployment: %s\n", i->deployment); | |
99 | ||
100 | if (!isempty(i->location)) | |
101 | printf(" Location: %s\n", i->location); | |
dbc4fbae LP |
102 | |
103 | r = sd_id128_get_machine(&mid); | |
104 | if (r >= 0) | |
105 | printf(" Machine ID: " SD_ID128_FORMAT_STR "\n", SD_ID128_FORMAT_VAL(mid)); | |
106 | ||
107 | r = sd_id128_get_boot(&bid); | |
108 | if (r >= 0) | |
109 | printf(" Boot ID: " SD_ID128_FORMAT_STR "\n", SD_ID128_FORMAT_VAL(bid)); | |
110 | ||
e9a2e453 LP |
111 | if (!isempty(i->virtualization)) |
112 | printf(" Virtualization: %s\n", i->virtualization); | |
fe29f9d2 | 113 | |
3448456b DH |
114 | if (!isempty(i->os_pretty_name)) |
115 | printf(" Operating System: %s\n", i->os_pretty_name); | |
fe29f9d2 | 116 | |
3448456b DH |
117 | if (!isempty(i->os_cpe_name)) |
118 | printf(" CPE OS Name: %s\n", i->os_cpe_name); | |
fe29f9d2 | 119 | |
fa4f8f9b DH |
120 | if (!isempty(i->kernel_name) && !isempty(i->kernel_release)) |
121 | printf(" Kernel: %s %s\n", i->kernel_name, i->kernel_release); | |
e9a2e453 LP |
122 | |
123 | if (!isempty(i->architecture)) | |
124 | printf(" Architecture: %s\n", i->architecture); | |
fe29f9d2 | 125 | |
dbc4fbae LP |
126 | } |
127 | ||
b028f3e4 SP |
128 | static int show_one_name(sd_bus *bus, const char* attr) { |
129 | _cleanup_bus_message_unref_ sd_bus_message *reply = NULL; | |
130 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; | |
131 | const char *s; | |
960787ae ZJS |
132 | int r; |
133 | ||
b028f3e4 | 134 | r = sd_bus_get_property( |
960787ae ZJS |
135 | bus, |
136 | "org.freedesktop.hostname1", | |
137 | "/org/freedesktop/hostname1", | |
b028f3e4 SP |
138 | "org.freedesktop.hostname1", |
139 | attr, | |
140 | &error, &reply, "s"); | |
141 | if (r < 0) { | |
142 | log_error("Could not get property: %s", bus_error_message(&error, -r)); | |
960787ae | 143 | return r; |
960787ae ZJS |
144 | } |
145 | ||
b028f3e4 SP |
146 | r = sd_bus_message_read(reply, "s", &s); |
147 | if (r < 0) | |
5b30bef8 | 148 | return bus_log_parse_error(r); |
960787ae | 149 | |
960787ae ZJS |
150 | printf("%s\n", s); |
151 | ||
152 | return 0; | |
153 | } | |
154 | ||
b028f3e4 | 155 | static int show_all_names(sd_bus *bus) { |
b92bea5d | 156 | StatusInfo info = {}; |
e9a2e453 LP |
157 | |
158 | static const struct bus_properties_map hostname_map[] = { | |
41414fed LP |
159 | { "Hostname", "s", NULL, offsetof(StatusInfo, hostname) }, |
160 | { "StaticHostname", "s", NULL, offsetof(StatusInfo, static_hostname) }, | |
161 | { "PrettyHostname", "s", NULL, offsetof(StatusInfo, pretty_hostname) }, | |
162 | { "IconName", "s", NULL, offsetof(StatusInfo, icon_name) }, | |
163 | { "Chassis", "s", NULL, offsetof(StatusInfo, chassis) }, | |
164 | { "Deployment", "s", NULL, offsetof(StatusInfo, deployment) }, | |
165 | { "Location", "s", NULL, offsetof(StatusInfo, location) }, | |
166 | { "KernelName", "s", NULL, offsetof(StatusInfo, kernel_name) }, | |
167 | { "KernelRelease", "s", NULL, offsetof(StatusInfo, kernel_release) }, | |
168 | { "OperatingSystemPrettyName", "s", NULL, offsetof(StatusInfo, os_pretty_name) }, | |
169 | { "OperatingSystemCPEName", "s", NULL, offsetof(StatusInfo, os_cpe_name) }, | |
b028f3e4 SP |
170 | {} |
171 | }; | |
e9a2e453 LP |
172 | |
173 | static const struct bus_properties_map manager_map[] = { | |
41414fed LP |
174 | { "Virtualization", "s", NULL, offsetof(StatusInfo, virtualization) }, |
175 | { "Architecture", "s", NULL, offsetof(StatusInfo, architecture) }, | |
e9a2e453 LP |
176 | {} |
177 | }; | |
178 | ||
b028f3e4 | 179 | int r; |
dbc4fbae | 180 | |
b028f3e4 SP |
181 | r = bus_map_all_properties(bus, |
182 | "org.freedesktop.hostname1", | |
183 | "/org/freedesktop/hostname1", | |
e9a2e453 | 184 | hostname_map, |
9f6eb1cd | 185 | &info); |
dbc4fbae | 186 | if (r < 0) |
b028f3e4 | 187 | goto fail; |
dbc4fbae | 188 | |
e9a2e453 LP |
189 | bus_map_all_properties(bus, |
190 | "org.freedesktop.systemd1", | |
191 | "/org/freedesktop/systemd1", | |
192 | manager_map, | |
193 | &info); | |
194 | ||
dbc4fbae | 195 | print_status_info(&info); |
b028f3e4 SP |
196 | |
197 | fail: | |
198 | free(info.hostname); | |
199 | free(info.static_hostname); | |
200 | free(info.pretty_hostname); | |
201 | free(info.icon_name); | |
202 | free(info.chassis); | |
799298d6 | 203 | free(info.deployment); |
41414fed | 204 | free(info.location); |
fa4f8f9b DH |
205 | free(info.kernel_name); |
206 | free(info.kernel_release); | |
3448456b DH |
207 | free(info.os_pretty_name); |
208 | free(info.os_cpe_name); | |
e9a2e453 LP |
209 | free(info.virtualization); |
210 | free(info.architecture); | |
211 | ||
212 | return r; | |
dbc4fbae LP |
213 | } |
214 | ||
b028f3e4 | 215 | static int show_status(sd_bus *bus, char **args, unsigned n) { |
960787ae ZJS |
216 | assert(args); |
217 | ||
218 | if (arg_pretty || arg_static || arg_transient) { | |
219 | const char *attr; | |
220 | ||
221 | if (!!arg_static + !!arg_pretty + !!arg_transient > 1) { | |
222 | log_error("Cannot query more than one name type at a time"); | |
223 | return -EINVAL; | |
224 | } | |
225 | ||
226 | attr = arg_pretty ? "PrettyHostname" : | |
227 | arg_static ? "StaticHostname" : "Hostname"; | |
228 | ||
229 | return show_one_name(bus, attr); | |
230 | } else | |
231 | return show_all_names(bus); | |
232 | } | |
233 | ||
b028f3e4 SP |
234 | static int set_simple_string(sd_bus *bus, const char *method, const char *value) { |
235 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; | |
b028f3e4 SP |
236 | int r = 0; |
237 | ||
46e65dcc | 238 | polkit_agent_open_if_enabled(); |
b028f3e4 SP |
239 | |
240 | r = sd_bus_call_method( | |
241 | bus, | |
242 | "org.freedesktop.hostname1", | |
243 | "/org/freedesktop/hostname1", | |
244 | "org.freedesktop.hostname1", | |
245 | method, | |
246 | &error, NULL, | |
247 | "sb", value, arg_ask_password); | |
248 | if (r < 0) | |
249 | log_error("Could not set property: %s", bus_error_message(&error, -r)); | |
250 | return r; | |
251 | } | |
252 | ||
253 | static int set_hostname(sd_bus *bus, char **args, unsigned n) { | |
dbc4fbae | 254 | _cleanup_free_ char *h = NULL; |
17eb9a9d | 255 | char *hostname = args[1]; |
dbc4fbae LP |
256 | int r; |
257 | ||
258 | assert(args); | |
259 | assert(n == 2); | |
260 | ||
960787ae ZJS |
261 | if (!arg_pretty && !arg_static && !arg_transient) |
262 | arg_pretty = arg_static = arg_transient = true; | |
263 | ||
264 | if (arg_pretty) { | |
fda2c5d2 LP |
265 | const char *p; |
266 | ||
267 | /* If the passed hostname is already valid, then | |
268 | * assume the user doesn't know anything about pretty | |
269 | * hostnames, so let's unset the pretty hostname, and | |
270 | * just set the passed hostname as static/dynamic | |
271 | * hostname. */ | |
272 | ||
17eb9a9d | 273 | if (arg_static && hostname_is_valid(hostname, true)) { |
fda2c5d2 | 274 | p = ""; |
17eb9a9d | 275 | /* maybe get rid of trailing dot */ |
ae691c1d | 276 | hostname = hostname_cleanup(hostname); |
17eb9a9d ZJS |
277 | } else { |
278 | p = h = strdup(hostname); | |
279 | if (!p) | |
280 | return log_oom(); | |
281 | ||
ae691c1d | 282 | hostname_cleanup(hostname); |
fda2c5d2 LP |
283 | } |
284 | ||
b028f3e4 | 285 | r = set_simple_string(bus, "SetPrettyHostname", p); |
dbc4fbae LP |
286 | if (r < 0) |
287 | return r; | |
dbc4fbae LP |
288 | } |
289 | ||
960787ae | 290 | if (arg_static) { |
b028f3e4 | 291 | r = set_simple_string(bus, "SetStaticHostname", hostname); |
dbc4fbae LP |
292 | if (r < 0) |
293 | return r; | |
294 | } | |
295 | ||
960787ae | 296 | if (arg_transient) { |
b028f3e4 | 297 | r = set_simple_string(bus, "SetHostname", hostname); |
dbc4fbae LP |
298 | if (r < 0) |
299 | return r; | |
300 | } | |
301 | ||
302 | return 0; | |
303 | } | |
304 | ||
b028f3e4 | 305 | static int set_icon_name(sd_bus *bus, char **args, unsigned n) { |
dbc4fbae LP |
306 | assert(args); |
307 | assert(n == 2); | |
308 | ||
b028f3e4 | 309 | return set_simple_string(bus, "SetIconName", args[1]); |
dbc4fbae LP |
310 | } |
311 | ||
b028f3e4 | 312 | static int set_chassis(sd_bus *bus, char **args, unsigned n) { |
7871c8e9 LP |
313 | assert(args); |
314 | assert(n == 2); | |
315 | ||
f20c84c1 | 316 | return set_simple_string(bus, "SetChassis", args[1]); |
7871c8e9 LP |
317 | } |
318 | ||
799298d6 JG |
319 | static int set_deployment(sd_bus *bus, char **args, unsigned n) { |
320 | assert(args); | |
321 | assert(n == 2); | |
322 | ||
323 | return set_simple_string(bus, "SetDeployment", args[1]); | |
324 | } | |
325 | ||
41414fed LP |
326 | static int set_location(sd_bus *bus, char **args, unsigned n) { |
327 | assert(args); | |
328 | assert(n == 2); | |
329 | ||
330 | return set_simple_string(bus, "SetLocation", args[1]); | |
331 | } | |
332 | ||
601185b4 | 333 | static void help(void) { |
7591abd4 LP |
334 | printf("%s [OPTIONS...] COMMAND ...\n\n" |
335 | "Query or change system hostname.\n\n" | |
dbc4fbae LP |
336 | " -h --help Show this help\n" |
337 | " --version Show package version\n" | |
7591abd4 | 338 | " --no-ask-password Do not prompt for password\n" |
b028f3e4 | 339 | " -H --host=[USER@]HOST Operate on remote host\n" |
a86a47ce LP |
340 | " -M --machine=CONTAINER Operate on local container\n" |
341 | " --transient Only set transient hostname\n" | |
342 | " --static Only set static hostname\n" | |
343 | " --pretty Only set pretty hostname\n\n" | |
dbc4fbae | 344 | "Commands:\n" |
7591abd4 LP |
345 | " status Show current hostname settings\n" |
346 | " set-hostname NAME Set system hostname\n" | |
7871c8e9 | 347 | " set-icon-name NAME Set icon name for host\n" |
799298d6 | 348 | " set-chassis NAME Set chassis type for host\n" |
601185b4 | 349 | " set-deployment NAME Set deployment environment for host\n" |
41414fed | 350 | " set-location NAME Set location for host\n" |
601185b4 | 351 | , program_invocation_short_name); |
dbc4fbae LP |
352 | } |
353 | ||
354 | static int parse_argv(int argc, char *argv[]) { | |
355 | ||
356 | enum { | |
357 | ARG_VERSION = 0x100, | |
358 | ARG_NO_ASK_PASSWORD, | |
960787ae ZJS |
359 | ARG_TRANSIENT, |
360 | ARG_STATIC, | |
361 | ARG_PRETTY | |
dbc4fbae LP |
362 | }; |
363 | ||
364 | static const struct option options[] = { | |
365 | { "help", no_argument, NULL, 'h' }, | |
366 | { "version", no_argument, NULL, ARG_VERSION }, | |
eb9da376 LP |
367 | { "transient", no_argument, NULL, ARG_TRANSIENT }, |
368 | { "static", no_argument, NULL, ARG_STATIC }, | |
369 | { "pretty", no_argument, NULL, ARG_PRETTY }, | |
dbc4fbae | 370 | { "host", required_argument, NULL, 'H' }, |
b028f3e4 | 371 | { "machine", required_argument, NULL, 'M' }, |
dbc4fbae | 372 | { "no-ask-password", no_argument, NULL, ARG_NO_ASK_PASSWORD }, |
eb9da376 | 373 | {} |
dbc4fbae LP |
374 | }; |
375 | ||
376 | int c; | |
377 | ||
378 | assert(argc >= 0); | |
379 | assert(argv); | |
380 | ||
601185b4 | 381 | while ((c = getopt_long(argc, argv, "hH:M:", options, NULL)) >= 0) |
dbc4fbae LP |
382 | |
383 | switch (c) { | |
384 | ||
385 | case 'h': | |
601185b4 ZJS |
386 | help(); |
387 | return 0; | |
dbc4fbae LP |
388 | |
389 | case ARG_VERSION: | |
390 | puts(PACKAGE_STRING); | |
dbc4fbae LP |
391 | puts(SYSTEMD_FEATURES); |
392 | return 0; | |
393 | ||
b028f3e4 SP |
394 | case 'H': |
395 | arg_transport = BUS_TRANSPORT_REMOTE; | |
396 | arg_host = optarg; | |
dbc4fbae LP |
397 | break; |
398 | ||
b028f3e4 | 399 | case 'M': |
de33fc62 | 400 | arg_transport = BUS_TRANSPORT_MACHINE; |
b028f3e4 | 401 | arg_host = optarg; |
dbc4fbae LP |
402 | break; |
403 | ||
960787ae ZJS |
404 | case ARG_TRANSIENT: |
405 | arg_transient = true; | |
dbc4fbae LP |
406 | break; |
407 | ||
960787ae ZJS |
408 | case ARG_PRETTY: |
409 | arg_pretty = true; | |
dbc4fbae LP |
410 | break; |
411 | ||
960787ae ZJS |
412 | case ARG_STATIC: |
413 | arg_static = true; | |
dbc4fbae LP |
414 | break; |
415 | ||
59f432ea LP |
416 | case ARG_NO_ASK_PASSWORD: |
417 | arg_ask_password = false; | |
418 | break; | |
419 | ||
dbc4fbae LP |
420 | case '?': |
421 | return -EINVAL; | |
422 | ||
423 | default: | |
eb9da376 | 424 | assert_not_reached("Unhandled option"); |
dbc4fbae | 425 | } |
dbc4fbae | 426 | |
dbc4fbae LP |
427 | return 1; |
428 | } | |
429 | ||
b028f3e4 | 430 | static int hostnamectl_main(sd_bus *bus, int argc, char *argv[]) { |
dbc4fbae LP |
431 | |
432 | static const struct { | |
433 | const char* verb; | |
434 | const enum { | |
435 | MORE, | |
436 | LESS, | |
437 | EQUAL | |
438 | } argc_cmp; | |
439 | const int argc; | |
b028f3e4 | 440 | int (* const dispatch)(sd_bus *bus, char **args, unsigned n); |
dbc4fbae | 441 | } verbs[] = { |
41414fed LP |
442 | { "status", LESS, 1, show_status }, |
443 | { "set-hostname", EQUAL, 2, set_hostname }, | |
444 | { "set-icon-name", EQUAL, 2, set_icon_name }, | |
445 | { "set-chassis", EQUAL, 2, set_chassis }, | |
446 | { "set-deployment", EQUAL, 2, set_deployment }, | |
447 | { "set-location", EQUAL, 2, set_location }, | |
dbc4fbae LP |
448 | }; |
449 | ||
450 | int left; | |
451 | unsigned i; | |
452 | ||
453 | assert(argc >= 0); | |
454 | assert(argv); | |
dbc4fbae LP |
455 | |
456 | left = argc - optind; | |
457 | ||
458 | if (left <= 0) | |
459 | /* Special rule: no arguments means "status" */ | |
460 | i = 0; | |
461 | else { | |
462 | if (streq(argv[optind], "help")) { | |
463 | help(); | |
464 | return 0; | |
465 | } | |
466 | ||
467 | for (i = 0; i < ELEMENTSOF(verbs); i++) | |
468 | if (streq(argv[optind], verbs[i].verb)) | |
469 | break; | |
470 | ||
471 | if (i >= ELEMENTSOF(verbs)) { | |
472 | log_error("Unknown operation %s", argv[optind]); | |
473 | return -EINVAL; | |
474 | } | |
475 | } | |
476 | ||
477 | switch (verbs[i].argc_cmp) { | |
478 | ||
479 | case EQUAL: | |
480 | if (left != verbs[i].argc) { | |
481 | log_error("Invalid number of arguments."); | |
482 | return -EINVAL; | |
483 | } | |
484 | ||
485 | break; | |
486 | ||
487 | case MORE: | |
488 | if (left < verbs[i].argc) { | |
489 | log_error("Too few arguments."); | |
490 | return -EINVAL; | |
491 | } | |
492 | ||
493 | break; | |
494 | ||
495 | case LESS: | |
496 | if (left > verbs[i].argc) { | |
497 | log_error("Too many arguments."); | |
498 | return -EINVAL; | |
499 | } | |
500 | ||
501 | break; | |
502 | ||
503 | default: | |
504 | assert_not_reached("Unknown comparison operator."); | |
505 | } | |
506 | ||
dbc4fbae LP |
507 | return verbs[i].dispatch(bus, argv + optind, left); |
508 | } | |
509 | ||
510 | int main(int argc, char *argv[]) { | |
03976f7b | 511 | _cleanup_bus_flush_close_unref_ sd_bus *bus = NULL; |
84f6181c | 512 | int r; |
dbc4fbae | 513 | |
a9cdc94f | 514 | setlocale(LC_ALL, ""); |
dbc4fbae LP |
515 | log_parse_environment(); |
516 | log_open(); | |
517 | ||
518 | r = parse_argv(argc, argv); | |
b028f3e4 | 519 | if (r <= 0) |
dbc4fbae | 520 | goto finish; |
b028f3e4 SP |
521 | |
522 | r = bus_open_transport(arg_transport, arg_host, false, &bus); | |
523 | if (r < 0) { | |
da927ba9 | 524 | log_error_errno(r, "Failed to create bus connection: %m"); |
dbc4fbae LP |
525 | goto finish; |
526 | } | |
527 | ||
b028f3e4 | 528 | r = hostnamectl_main(bus, argc, argv); |
dbc4fbae LP |
529 | |
530 | finish: | |
5567fafb | 531 | return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; |
dbc4fbae | 532 | } |