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7640a5de LP |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
41550d40 | 6 | Copyright 2011 Lennart Poettering |
7640a5de LP |
7 | |
8 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
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 | |
7640a5de LP |
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 | |
5430f7f2 | 16 | Lesser General Public License for more details. |
7640a5de | 17 | |
5430f7f2 | 18 | You should have received a copy of the GNU Lesser General Public License |
7640a5de LP |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
20 | ***/ | |
21 | ||
7640a5de LP |
22 | #include <errno.h> |
23 | #include <string.h> | |
24 | #include <unistd.h> | |
c2a14cf0 | 25 | #include <dlfcn.h> |
f426cc5d | 26 | #include <sys/utsname.h> |
7640a5de LP |
27 | |
28 | #include "util.h" | |
29 | #include "strv.h" | |
ad740100 | 30 | #include "def.h" |
b52aae1d | 31 | #include "virt.h" |
4d1a6904 | 32 | #include "env-util.h" |
a5c32cff HH |
33 | #include "fileio-label.h" |
34 | #include "label.h" | |
66a4c743 LP |
35 | #include "bus-util.h" |
36 | #include "event-util.h" | |
91f9dcaf | 37 | |
7640a5de LP |
38 | enum { |
39 | PROP_HOSTNAME, | |
40 | PROP_STATIC_HOSTNAME, | |
41 | PROP_PRETTY_HOSTNAME, | |
42 | PROP_ICON_NAME, | |
7871c8e9 | 43 | PROP_CHASSIS, |
f426cc5d DH |
44 | PROP_KERNEL_NAME, |
45 | PROP_KERNEL_RELEASE, | |
9be3455f | 46 | PROP_KERNEL_VERSION, |
44c32988 DH |
47 | PROP_OS_PRETTY_NAME, |
48 | PROP_OS_CPE_NAME, | |
7640a5de LP |
49 | _PROP_MAX |
50 | }; | |
51 | ||
66a4c743 LP |
52 | typedef struct Context { |
53 | char *data[_PROP_MAX]; | |
54 | Hashmap *polkit_registry; | |
55 | } Context; | |
ad740100 | 56 | |
66a4c743 | 57 | static void context_reset(Context *c) { |
7640a5de LP |
58 | int p; |
59 | ||
66a4c743 LP |
60 | assert(c); |
61 | ||
7640a5de | 62 | for (p = 0; p < _PROP_MAX; p++) { |
66a4c743 LP |
63 | free(c->data[p]); |
64 | c->data[p] = NULL; | |
7640a5de LP |
65 | } |
66 | } | |
67 | ||
66a4c743 LP |
68 | static void context_free(Context *c, sd_bus *bus) { |
69 | assert(c); | |
70 | ||
71 | context_reset(c); | |
72 | bus_verify_polkit_async_registry_free(bus, c->polkit_registry); | |
73 | } | |
74 | ||
75 | static int context_read_data(Context *c) { | |
7640a5de | 76 | int r; |
f426cc5d | 77 | struct utsname u; |
7640a5de | 78 | |
66a4c743 LP |
79 | assert(c); |
80 | ||
81 | context_reset(c); | |
7640a5de | 82 | |
f426cc5d DH |
83 | assert_se(uname(&u) >= 0); |
84 | c->data[PROP_KERNEL_NAME] = strdup(u.sysname); | |
85 | c->data[PROP_KERNEL_RELEASE] = strdup(u.release); | |
9be3455f DH |
86 | c->data[PROP_KERNEL_VERSION] = strdup(u.version); |
87 | if (!c->data[PROP_KERNEL_NAME] || !c->data[PROP_KERNEL_RELEASE] || | |
88 | !c->data[PROP_KERNEL_VERSION]) | |
f426cc5d DH |
89 | return -ENOMEM; |
90 | ||
66a4c743 LP |
91 | c->data[PROP_HOSTNAME] = gethostname_malloc(); |
92 | if (!c->data[PROP_HOSTNAME]) | |
7640a5de LP |
93 | return -ENOMEM; |
94 | ||
66a4c743 | 95 | r = read_one_line_file("/etc/hostname", &c->data[PROP_STATIC_HOSTNAME]); |
7640a5de LP |
96 | if (r < 0 && r != -ENOENT) |
97 | return r; | |
98 | ||
99 | r = parse_env_file("/etc/machine-info", NEWLINE, | |
66a4c743 LP |
100 | "PRETTY_HOSTNAME", &c->data[PROP_PRETTY_HOSTNAME], |
101 | "ICON_NAME", &c->data[PROP_ICON_NAME], | |
102 | "CHASSIS", &c->data[PROP_CHASSIS], | |
7640a5de LP |
103 | NULL); |
104 | if (r < 0 && r != -ENOENT) | |
105 | return r; | |
106 | ||
44c32988 DH |
107 | r = parse_env_file("/etc/os-release", NEWLINE, |
108 | "PRETTY_NAME", &c->data[PROP_OS_PRETTY_NAME], | |
109 | "CPE_NAME", &c->data[PROP_OS_CPE_NAME], | |
110 | NULL); | |
5ae4d543 LP |
111 | if (r == -ENOENT) { |
112 | r = parse_env_file("/usr/lib/os-release", NEWLINE, | |
113 | "PRETTY_NAME", &c->data[PROP_OS_PRETTY_NAME], | |
114 | "CPE_NAME", &c->data[PROP_OS_CPE_NAME], | |
115 | NULL); | |
116 | } | |
117 | ||
44c32988 DH |
118 | if (r < 0 && r != -ENOENT) |
119 | return r; | |
120 | ||
7640a5de LP |
121 | return 0; |
122 | } | |
123 | ||
c2a14cf0 | 124 | static bool check_nss(void) { |
c2a14cf0 LP |
125 | void *dl; |
126 | ||
7871c8e9 LP |
127 | dl = dlopen("libnss_myhostname.so.2", RTLD_LAZY); |
128 | if (dl) { | |
c2a14cf0 LP |
129 | dlclose(dl); |
130 | return true; | |
131 | } | |
132 | ||
133 | return false; | |
134 | } | |
135 | ||
7871c8e9 | 136 | static bool valid_chassis(const char *chassis) { |
7640a5de | 137 | |
7871c8e9 LP |
138 | assert(chassis); |
139 | ||
140 | return nulstr_contains( | |
141 | "vm\0" | |
142 | "container\0" | |
143 | "desktop\0" | |
144 | "laptop\0" | |
145 | "server\0" | |
146 | "tablet\0" | |
147 | "handset\0", | |
148 | chassis); | |
149 | } | |
150 | ||
151 | static const char* fallback_chassis(void) { | |
7640a5de LP |
152 | int r; |
153 | char *type; | |
154 | unsigned t; | |
248fab74 | 155 | int v; |
7871c8e9 LP |
156 | |
157 | v = detect_virtualization(NULL); | |
158 | ||
159 | if (v == VIRTUALIZATION_VM) | |
160 | return "vm"; | |
161 | if (v == VIRTUALIZATION_CONTAINER) | |
162 | return "container"; | |
163 | ||
164 | r = read_one_line_file("/sys/firmware/acpi/pm_profile", &type); | |
165 | if (r < 0) | |
166 | goto try_dmi; | |
167 | ||
168 | r = safe_atou(type, &t); | |
169 | free(type); | |
170 | if (r < 0) | |
171 | goto try_dmi; | |
172 | ||
173 | /* We only list the really obvious cases here as the ACPI data | |
174 | * is not really super reliable. | |
175 | * | |
176 | * See the ACPI 5.0 Spec Section 5.2.9.1 for details: | |
177 | * | |
178 | * http://www.acpi.info/DOWNLOADS/ACPIspec50.pdf | |
179 | */ | |
180 | ||
181 | switch(t) { | |
182 | ||
183 | case 1: | |
184 | case 3: | |
185 | case 6: | |
186 | return "desktop"; | |
187 | ||
188 | case 2: | |
189 | return "laptop"; | |
7640a5de | 190 | |
7871c8e9 LP |
191 | case 4: |
192 | case 5: | |
193 | case 7: | |
194 | return "server"; | |
7640a5de | 195 | |
7871c8e9 LP |
196 | case 8: |
197 | return "tablet"; | |
198 | } | |
199 | ||
200 | try_dmi: | |
7640a5de LP |
201 | r = read_one_line_file("/sys/class/dmi/id/chassis_type", &type); |
202 | if (r < 0) | |
203 | return NULL; | |
204 | ||
205 | r = safe_atou(type, &t); | |
206 | free(type); | |
7640a5de LP |
207 | if (r < 0) |
208 | return NULL; | |
209 | ||
210 | /* We only list the really obvious cases here. The DMI data is | |
211 | unreliable enough, so let's not do any additional guesswork | |
41550d40 LP |
212 | on top of that. |
213 | ||
214 | See the SMBIOS Specification 2.7.1 section 7.4.1 for | |
215 | details about the values listed here: | |
216 | ||
217 | http://www.dmtf.org/sites/default/files/standards/documents/DSP0134_2.7.1.pdf | |
218 | */ | |
7640a5de LP |
219 | |
220 | switch (t) { | |
221 | ||
222 | case 0x3: | |
223 | case 0x4: | |
224 | case 0x6: | |
225 | case 0x7: | |
7871c8e9 | 226 | return "desktop"; |
7640a5de | 227 | |
7871c8e9 | 228 | case 0x8: |
7640a5de LP |
229 | case 0x9: |
230 | case 0xA: | |
231 | case 0xE: | |
7871c8e9 LP |
232 | return "laptop"; |
233 | ||
234 | case 0xB: | |
235 | return "handset"; | |
7640a5de LP |
236 | |
237 | case 0x11: | |
41550d40 | 238 | case 0x1C: |
7871c8e9 | 239 | return "server"; |
7640a5de LP |
240 | } |
241 | ||
7640a5de LP |
242 | return NULL; |
243 | } | |
244 | ||
66a4c743 | 245 | static char* context_fallback_icon_name(Context *c) { |
7871c8e9 LP |
246 | const char *chassis; |
247 | ||
66a4c743 LP |
248 | assert(c); |
249 | ||
250 | if (!isempty(c->data[PROP_CHASSIS])) | |
251 | return strappend("computer-", c->data[PROP_CHASSIS]); | |
7871c8e9 LP |
252 | |
253 | chassis = fallback_chassis(); | |
254 | if (chassis) | |
255 | return strappend("computer-", chassis); | |
256 | ||
257 | return strdup("computer"); | |
258 | } | |
259 | ||
c779a442 | 260 | static bool hostname_is_useful(const char *hn) { |
fecc80c1 | 261 | return !isempty(hn) && !is_localhost(hn); |
c779a442 SW |
262 | } |
263 | ||
264 | static int context_update_kernel_hostname(Context *c) { | |
265 | const char *static_hn; | |
7640a5de LP |
266 | const char *hn; |
267 | ||
66a4c743 LP |
268 | assert(c); |
269 | ||
c779a442 SW |
270 | static_hn = c->data[PROP_STATIC_HOSTNAME]; |
271 | ||
272 | /* /etc/hostname with something other than "localhost" | |
273 | * has the highest preference ... */ | |
274 | if (hostname_is_useful(static_hn)) | |
275 | hn = static_hn; | |
276 | ||
277 | /* ... the transient host name, (ie: DHCP) comes next ...*/ | |
278 | else if (!isempty(c->data[PROP_HOSTNAME])) | |
66a4c743 | 279 | hn = c->data[PROP_HOSTNAME]; |
7640a5de | 280 | |
c779a442 SW |
281 | /* ... fallback to static "localhost.*" ignored above ... */ |
282 | else if (!isempty(static_hn)) | |
283 | hn = static_hn; | |
284 | ||
285 | /* ... and the ultimate fallback */ | |
286 | else | |
287 | hn = "localhost"; | |
288 | ||
7640a5de LP |
289 | if (sethostname(hn, strlen(hn)) < 0) |
290 | return -errno; | |
291 | ||
292 | return 0; | |
293 | } | |
294 | ||
66a4c743 | 295 | static int context_write_data_static_hostname(Context *c) { |
7640a5de | 296 | |
66a4c743 LP |
297 | assert(c); |
298 | ||
299 | if (isempty(c->data[PROP_STATIC_HOSTNAME])) { | |
7640a5de LP |
300 | |
301 | if (unlink("/etc/hostname") < 0) | |
302 | return errno == ENOENT ? 0 : -errno; | |
303 | ||
304 | return 0; | |
305 | } | |
66a4c743 | 306 | return write_string_file_atomic_label("/etc/hostname", c->data[PROP_STATIC_HOSTNAME]); |
7640a5de LP |
307 | } |
308 | ||
f200e8bb | 309 | static int context_write_data_machine_info(Context *c) { |
4f34ed54 | 310 | |
7640a5de LP |
311 | static const char * const name[_PROP_MAX] = { |
312 | [PROP_PRETTY_HOSTNAME] = "PRETTY_HOSTNAME", | |
7871c8e9 LP |
313 | [PROP_ICON_NAME] = "ICON_NAME", |
314 | [PROP_CHASSIS] = "CHASSIS" | |
7640a5de LP |
315 | }; |
316 | ||
0ccad099 | 317 | _cleanup_strv_free_ char **l = NULL; |
7640a5de LP |
318 | int r, p; |
319 | ||
66a4c743 LP |
320 | assert(c); |
321 | ||
717603e3 | 322 | r = load_env_file(NULL, "/etc/machine-info", NULL, &l); |
7640a5de LP |
323 | if (r < 0 && r != -ENOENT) |
324 | return r; | |
325 | ||
f200e8bb | 326 | for (p = PROP_PRETTY_HOSTNAME; p <= PROP_CHASSIS; p++) { |
7640a5de LP |
327 | char *t, **u; |
328 | ||
329 | assert(name[p]); | |
330 | ||
66a4c743 | 331 | if (isempty(c->data[p])) { |
f8440af5 | 332 | strv_env_unset(l, name[p]); |
7640a5de LP |
333 | continue; |
334 | } | |
335 | ||
0ccad099 | 336 | if (asprintf(&t, "%s=%s", name[p], strempty(c->data[p])) < 0) |
7640a5de | 337 | return -ENOMEM; |
7640a5de LP |
338 | |
339 | u = strv_env_set(l, t); | |
340 | free(t); | |
7640a5de LP |
341 | |
342 | if (!u) | |
343 | return -ENOMEM; | |
0ccad099 LP |
344 | |
345 | strv_free(l); | |
7640a5de LP |
346 | l = u; |
347 | } | |
348 | ||
349 | if (strv_isempty(l)) { | |
350 | ||
351 | if (unlink("/etc/machine-info") < 0) | |
352 | return errno == ENOENT ? 0 : -errno; | |
353 | ||
354 | return 0; | |
355 | } | |
356 | ||
0ccad099 | 357 | return write_env_file_label("/etc/machine-info", l); |
7640a5de LP |
358 | } |
359 | ||
66a4c743 LP |
360 | static int property_get_icon_name( |
361 | sd_bus *bus, | |
362 | const char *path, | |
363 | const char *interface, | |
364 | const char *property, | |
365 | sd_bus_message *reply, | |
ebcf1f97 LP |
366 | void *userdata, |
367 | sd_bus_error *error) { | |
7640a5de | 368 | |
66a4c743 LP |
369 | _cleanup_free_ char *n = NULL; |
370 | Context *c = userdata; | |
371 | const char *name; | |
7640a5de | 372 | |
66a4c743 LP |
373 | if (isempty(c->data[PROP_ICON_NAME])) |
374 | name = n = context_fallback_icon_name(c); | |
7640a5de | 375 | else |
66a4c743 LP |
376 | name = c->data[PROP_ICON_NAME]; |
377 | ||
378 | if (!name) | |
379 | return -ENOMEM; | |
7640a5de | 380 | |
ebcf1f97 | 381 | return sd_bus_message_append(reply, "s", name); |
7640a5de LP |
382 | } |
383 | ||
66a4c743 LP |
384 | static int property_get_chassis( |
385 | sd_bus *bus, | |
386 | const char *path, | |
387 | const char *interface, | |
388 | const char *property, | |
389 | sd_bus_message *reply, | |
ebcf1f97 LP |
390 | void *userdata, |
391 | sd_bus_error *error) { | |
7871c8e9 | 392 | |
66a4c743 LP |
393 | Context *c = userdata; |
394 | const char *name; | |
7871c8e9 | 395 | |
66a4c743 | 396 | if (isempty(c->data[PROP_CHASSIS])) |
7871c8e9 LP |
397 | name = fallback_chassis(); |
398 | else | |
66a4c743 | 399 | name = c->data[PROP_CHASSIS]; |
7871c8e9 | 400 | |
ebcf1f97 | 401 | return sd_bus_message_append(reply, "s", name); |
7871c8e9 LP |
402 | } |
403 | ||
ebcf1f97 | 404 | static int method_set_hostname(sd_bus *bus, sd_bus_message *m, void *userdata, sd_bus_error *error) { |
66a4c743 LP |
405 | Context *c = userdata; |
406 | const char *name; | |
102d8f81 | 407 | int interactive; |
66a4c743 LP |
408 | char *h; |
409 | int r; | |
d200735e | 410 | |
66a4c743 LP |
411 | r = sd_bus_message_read(m, "sb", &name, &interactive); |
412 | if (r < 0) | |
ebcf1f97 | 413 | return r; |
d200735e | 414 | |
66a4c743 LP |
415 | if (isempty(name)) |
416 | name = c->data[PROP_STATIC_HOSTNAME]; | |
7640a5de | 417 | |
66a4c743 LP |
418 | if (isempty(name)) |
419 | name = "localhost"; | |
7640a5de | 420 | |
66a4c743 | 421 | if (!hostname_is_valid(name)) |
ebcf1f97 | 422 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid hostname '%s'", name); |
7640a5de | 423 | |
66a4c743 | 424 | if (streq_ptr(name, c->data[PROP_HOSTNAME])) |
df2d202e | 425 | return sd_bus_reply_method_return(m, NULL); |
7640a5de | 426 | |
ebcf1f97 | 427 | r = bus_verify_polkit_async(bus, &c->polkit_registry, m, "org.freedesktop.hostname1.set-hostname", interactive, error, method_set_hostname, c); |
66a4c743 | 428 | if (r < 0) |
ebcf1f97 | 429 | return r; |
66a4c743 LP |
430 | if (r == 0) |
431 | return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */ | |
7640a5de | 432 | |
66a4c743 LP |
433 | h = strdup(name); |
434 | if (!h) | |
ebcf1f97 | 435 | return -ENOMEM; |
7640a5de | 436 | |
66a4c743 LP |
437 | free(c->data[PROP_HOSTNAME]); |
438 | c->data[PROP_HOSTNAME] = h; | |
7640a5de | 439 | |
c779a442 | 440 | r = context_update_kernel_hostname(c); |
66a4c743 LP |
441 | if (r < 0) { |
442 | log_error("Failed to set host name: %s", strerror(-r)); | |
ebcf1f97 | 443 | return sd_bus_error_set_errnof(error, r, "Failed to set hostname: %s", strerror(-r)); |
66a4c743 | 444 | } |
7640a5de | 445 | |
66a4c743 | 446 | log_info("Changed host name to '%s'", strna(c->data[PROP_HOSTNAME])); |
7640a5de | 447 | |
66a4c743 | 448 | sd_bus_emit_properties_changed(bus, "/org/freedesktop/hostname1", "org.freedesktop.hostname1", "Hostname", NULL); |
7640a5de | 449 | |
df2d202e | 450 | return sd_bus_reply_method_return(m, NULL); |
66a4c743 | 451 | } |
7640a5de | 452 | |
ebcf1f97 | 453 | static int method_set_static_hostname(sd_bus *bus, sd_bus_message *m, void *userdata, sd_bus_error *error) { |
66a4c743 LP |
454 | Context *c = userdata; |
455 | const char *name; | |
102d8f81 | 456 | int interactive; |
66a4c743 | 457 | int r; |
7640a5de | 458 | |
66a4c743 LP |
459 | r = sd_bus_message_read(m, "sb", &name, &interactive); |
460 | if (r < 0) | |
ebcf1f97 | 461 | return r; |
7640a5de | 462 | |
66a4c743 LP |
463 | if (isempty(name)) |
464 | name = NULL; | |
7640a5de | 465 | |
66a4c743 | 466 | if (streq_ptr(name, c->data[PROP_STATIC_HOSTNAME])) |
df2d202e | 467 | return sd_bus_reply_method_return(m, NULL); |
7640a5de | 468 | |
ebcf1f97 | 469 | r = bus_verify_polkit_async(bus, &c->polkit_registry, m, "org.freedesktop.hostname1.set-static-hostname", interactive, error, method_set_static_hostname, c); |
66a4c743 | 470 | if (r < 0) |
ebcf1f97 | 471 | return r; |
66a4c743 LP |
472 | if (r == 0) |
473 | return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */ | |
7640a5de | 474 | |
66a4c743 LP |
475 | if (isempty(name)) { |
476 | free(c->data[PROP_STATIC_HOSTNAME]); | |
477 | c->data[PROP_STATIC_HOSTNAME] = NULL; | |
478 | } else { | |
479 | char *h; | |
7640a5de | 480 | |
66a4c743 | 481 | if (!hostname_is_valid(name)) |
ebcf1f97 | 482 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid static hostname '%s'", name); |
7640a5de | 483 | |
66a4c743 LP |
484 | h = strdup(name); |
485 | if (!h) | |
ebcf1f97 | 486 | return -ENOMEM; |
7640a5de | 487 | |
66a4c743 LP |
488 | free(c->data[PROP_STATIC_HOSTNAME]); |
489 | c->data[PROP_STATIC_HOSTNAME] = h; | |
490 | } | |
7640a5de | 491 | |
c779a442 SW |
492 | r = context_update_kernel_hostname(c); |
493 | if (r < 0) { | |
494 | log_error("Failed to set host name: %s", strerror(-r)); | |
495 | return sd_bus_error_set_errnof(error, r, "Failed to set hostname: %s", strerror(-r)); | |
496 | } | |
497 | ||
66a4c743 LP |
498 | r = context_write_data_static_hostname(c); |
499 | if (r < 0) { | |
500 | log_error("Failed to write static host name: %s", strerror(-r)); | |
ebcf1f97 | 501 | return sd_bus_error_set_errnof(error, r, "Failed to set static hostname: %s", strerror(-r)); |
66a4c743 | 502 | } |
7640a5de | 503 | |
66a4c743 | 504 | log_info("Changed static host name to '%s'", strna(c->data[PROP_STATIC_HOSTNAME])); |
7640a5de | 505 | |
66a4c743 | 506 | sd_bus_emit_properties_changed(bus, "/org/freedesktop/hostname1", "org.freedesktop.hostname1", "StaticHostname", NULL); |
7640a5de | 507 | |
df2d202e | 508 | return sd_bus_reply_method_return(m, NULL); |
66a4c743 | 509 | } |
7640a5de | 510 | |
ebcf1f97 | 511 | static int set_machine_info(Context *c, sd_bus *bus, sd_bus_message *m, int prop, sd_bus_message_handler_t cb, sd_bus_error *error) { |
102d8f81 | 512 | int interactive; |
66a4c743 LP |
513 | const char *name; |
514 | int r; | |
515 | ||
516 | assert(c); | |
517 | assert(bus); | |
518 | assert(m); | |
519 | ||
520 | r = sd_bus_message_read(m, "sb", &name, &interactive); | |
521 | if (r < 0) | |
ebcf1f97 | 522 | return r; |
66a4c743 LP |
523 | |
524 | if (isempty(name)) | |
525 | name = NULL; | |
526 | ||
527 | if (streq_ptr(name, c->data[prop])) | |
df2d202e | 528 | return sd_bus_reply_method_return(m, NULL); |
7640a5de | 529 | |
66a4c743 LP |
530 | /* Since the pretty hostname should always be changed at the |
531 | * same time as the static one, use the same policy action for | |
532 | * both... */ | |
533 | ||
534 | r = bus_verify_polkit_async(bus, &c->polkit_registry, m, prop == PROP_PRETTY_HOSTNAME ? | |
535 | "org.freedesktop.hostname1.set-static-hostname" : | |
ebcf1f97 | 536 | "org.freedesktop.hostname1.set-machine-info", interactive, error, cb, c); |
66a4c743 | 537 | if (r < 0) |
ebcf1f97 | 538 | return r; |
66a4c743 LP |
539 | if (r == 0) |
540 | return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */ | |
541 | ||
542 | if (isempty(name)) { | |
543 | free(c->data[prop]); | |
544 | c->data[prop] = NULL; | |
545 | } else { | |
546 | char *h; | |
547 | ||
548 | /* The icon name might ultimately be used as file | |
549 | * name, so better be safe than sorry */ | |
550 | ||
551 | if (prop == PROP_ICON_NAME && !filename_is_safe(name)) | |
ebcf1f97 | 552 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid icon name '%s'", name); |
6294aa76 | 553 | if (prop == PROP_PRETTY_HOSTNAME && string_has_cc(name, NULL)) |
ebcf1f97 | 554 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid pretty host name '%s'", name); |
66a4c743 | 555 | if (prop == PROP_CHASSIS && !valid_chassis(name)) |
ebcf1f97 | 556 | return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid chassis '%s'", name); |
66a4c743 LP |
557 | |
558 | h = strdup(name); | |
559 | if (!h) | |
ebcf1f97 | 560 | return -ENOMEM; |
66a4c743 LP |
561 | |
562 | free(c->data[prop]); | |
563 | c->data[prop] = h; | |
7640a5de LP |
564 | } |
565 | ||
f200e8bb | 566 | r = context_write_data_machine_info(c); |
66a4c743 LP |
567 | if (r < 0) { |
568 | log_error("Failed to write machine info: %s", strerror(-r)); | |
ebcf1f97 | 569 | return sd_bus_error_set_errnof(error, r, "Failed to write machine info: %s", strerror(-r)); |
66a4c743 | 570 | } |
7640a5de | 571 | |
66a4c743 LP |
572 | log_info("Changed %s to '%s'", |
573 | prop == PROP_PRETTY_HOSTNAME ? "pretty host name" : | |
574 | prop == PROP_CHASSIS ? "chassis" : "icon name", strna(c->data[prop])); | |
7640a5de | 575 | |
66a4c743 LP |
576 | sd_bus_emit_properties_changed(bus, "/org/freedesktop/hostname1", "org.freedesktop.hostname1", |
577 | prop == PROP_PRETTY_HOSTNAME ? "PrettyHostname" : | |
578 | prop == PROP_CHASSIS ? "Chassis" : "IconName", NULL); | |
7640a5de | 579 | |
df2d202e | 580 | return sd_bus_reply_method_return(m, NULL); |
66a4c743 | 581 | } |
7640a5de | 582 | |
ebcf1f97 LP |
583 | static int method_set_pretty_hostname(sd_bus *bus, sd_bus_message *m, void *userdata, sd_bus_error *error) { |
584 | return set_machine_info(userdata, bus, m, PROP_PRETTY_HOSTNAME, method_set_pretty_hostname, error); | |
7640a5de LP |
585 | } |
586 | ||
ebcf1f97 LP |
587 | static int method_set_icon_name(sd_bus *bus, sd_bus_message *m, void *userdata, sd_bus_error *error) { |
588 | return set_machine_info(userdata, bus, m, PROP_ICON_NAME, method_set_icon_name, error); | |
66a4c743 LP |
589 | } |
590 | ||
ebcf1f97 LP |
591 | static int method_set_chassis(sd_bus *bus, sd_bus_message *m, void *userdata, sd_bus_error *error) { |
592 | return set_machine_info(userdata, bus, m, PROP_CHASSIS, method_set_chassis, error); | |
66a4c743 LP |
593 | } |
594 | ||
595 | static const sd_bus_vtable hostname_vtable[] = { | |
596 | SD_BUS_VTABLE_START(0), | |
597 | SD_BUS_PROPERTY("Hostname", "s", NULL, offsetof(Context, data) + sizeof(char*) * PROP_HOSTNAME, 0), | |
598 | SD_BUS_PROPERTY("StaticHostname", "s", NULL, offsetof(Context, data) + sizeof(char*) * PROP_STATIC_HOSTNAME, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), | |
599 | SD_BUS_PROPERTY("PrettyHostname", "s", NULL, offsetof(Context, data) + sizeof(char*) * PROP_PRETTY_HOSTNAME, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), | |
600 | SD_BUS_PROPERTY("IconName", "s", property_get_icon_name, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), | |
601 | SD_BUS_PROPERTY("Chassis", "s", property_get_chassis, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), | |
f426cc5d DH |
602 | SD_BUS_PROPERTY("KernelName", "s", NULL, offsetof(Context, data) + sizeof(char*) * PROP_KERNEL_NAME, SD_BUS_VTABLE_PROPERTY_CONST), |
603 | SD_BUS_PROPERTY("KernelRelease", "s", NULL, offsetof(Context, data) + sizeof(char*) * PROP_KERNEL_RELEASE, SD_BUS_VTABLE_PROPERTY_CONST), | |
9be3455f | 604 | SD_BUS_PROPERTY("KernelVersion", "s", NULL, offsetof(Context, data) + sizeof(char*) * PROP_KERNEL_VERSION, SD_BUS_VTABLE_PROPERTY_CONST), |
44c32988 DH |
605 | SD_BUS_PROPERTY("OperatingSystemPrettyName", "s", NULL, offsetof(Context, data) + sizeof(char*) * PROP_OS_PRETTY_NAME, SD_BUS_VTABLE_PROPERTY_CONST), |
606 | SD_BUS_PROPERTY("OperatingSystemCPEName", "s", NULL, offsetof(Context, data) + sizeof(char*) * PROP_OS_CPE_NAME, SD_BUS_VTABLE_PROPERTY_CONST), | |
adacb957 LP |
607 | SD_BUS_METHOD("SetHostname", "sb", NULL, method_set_hostname, SD_BUS_VTABLE_UNPRIVILEGED), |
608 | SD_BUS_METHOD("SetStaticHostname", "sb", NULL, method_set_static_hostname, SD_BUS_VTABLE_UNPRIVILEGED), | |
609 | SD_BUS_METHOD("SetPrettyHostname", "sb", NULL, method_set_pretty_hostname, SD_BUS_VTABLE_UNPRIVILEGED), | |
610 | SD_BUS_METHOD("SetIconName", "sb", NULL, method_set_icon_name, SD_BUS_VTABLE_UNPRIVILEGED), | |
611 | SD_BUS_METHOD("SetChassis", "sb", NULL, method_set_chassis, SD_BUS_VTABLE_UNPRIVILEGED), | |
66a4c743 LP |
612 | SD_BUS_VTABLE_END, |
613 | }; | |
614 | ||
615 | static int connect_bus(Context *c, sd_event *event, sd_bus **_bus) { | |
616 | _cleanup_bus_unref_ sd_bus *bus = NULL; | |
7640a5de LP |
617 | int r; |
618 | ||
66a4c743 LP |
619 | assert(c); |
620 | assert(event); | |
d0baa06f LP |
621 | assert(_bus); |
622 | ||
76b54375 | 623 | r = sd_bus_default_system(&bus); |
66a4c743 LP |
624 | if (r < 0) { |
625 | log_error("Failed to get system bus connection: %s", strerror(-r)); | |
626 | return r; | |
d0baa06f LP |
627 | } |
628 | ||
19befb2d | 629 | r = sd_bus_add_object_vtable(bus, NULL, "/org/freedesktop/hostname1", "org.freedesktop.hostname1", hostname_vtable, c); |
66a4c743 LP |
630 | if (r < 0) { |
631 | log_error("Failed to register object: %s", strerror(-r)); | |
632 | return r; | |
d0baa06f LP |
633 | } |
634 | ||
5bb658a1 | 635 | r = sd_bus_request_name(bus, "org.freedesktop.hostname1", 0); |
66a4c743 LP |
636 | if (r < 0) { |
637 | log_error("Failed to register name: %s", strerror(-r)); | |
638 | return r; | |
add10b5a LP |
639 | } |
640 | ||
66a4c743 LP |
641 | r = sd_bus_attach_event(bus, event, 0); |
642 | if (r < 0) { | |
643 | log_error("Failed to attach bus to event loop: %s", strerror(-r)); | |
644 | return r; | |
645 | } | |
d0baa06f | 646 | |
66a4c743 LP |
647 | *_bus = bus; |
648 | bus = NULL; | |
d0baa06f | 649 | |
66a4c743 | 650 | return 0; |
d0baa06f LP |
651 | } |
652 | ||
653 | int main(int argc, char *argv[]) { | |
66a4c743 LP |
654 | Context context = {}; |
655 | ||
656 | _cleanup_event_unref_ sd_event *event = NULL; | |
657 | _cleanup_bus_unref_ sd_bus *bus = NULL; | |
d0baa06f | 658 | int r; |
d0baa06f | 659 | |
7640a5de LP |
660 | log_set_target(LOG_TARGET_AUTO); |
661 | log_parse_environment(); | |
662 | log_open(); | |
663 | ||
4c12626c | 664 | umask(0022); |
a5c32cff | 665 | label_init("/etc"); |
4c12626c | 666 | |
7640a5de LP |
667 | if (argc != 1) { |
668 | log_error("This program takes no arguments."); | |
669 | r = -EINVAL; | |
670 | goto finish; | |
671 | } | |
672 | ||
c2a14cf0 LP |
673 | if (!check_nss()) |
674 | log_warning("Warning: nss-myhostname is not installed. Changing the local hostname might make it unresolveable. Please install nss-myhostname!"); | |
675 | ||
66a4c743 LP |
676 | if (argc != 1) { |
677 | log_error("This program takes no arguments."); | |
678 | r = -EINVAL; | |
679 | goto finish; | |
680 | } | |
681 | ||
afc6adb5 | 682 | r = sd_event_default(&event); |
7640a5de | 683 | if (r < 0) { |
66a4c743 | 684 | log_error("Failed to allocate event loop: %s", strerror(-r)); |
7640a5de LP |
685 | goto finish; |
686 | } | |
687 | ||
cde93897 LP |
688 | sd_event_set_watchdog(event, true); |
689 | ||
66a4c743 | 690 | r = connect_bus(&context, event, &bus); |
d0baa06f | 691 | if (r < 0) |
7640a5de | 692 | goto finish; |
7640a5de | 693 | |
66a4c743 LP |
694 | r = context_read_data(&context); |
695 | if (r < 0) { | |
3a3c71c1 | 696 | log_error("Failed to read hostname and machine information: %s", strerror(-r)); |
66a4c743 LP |
697 | goto finish; |
698 | } | |
ad740100 | 699 | |
37224a5f | 700 | r = bus_event_loop_with_idle(event, bus, "org.freedesktop.hostname1", DEFAULT_EXIT_USEC, NULL, NULL); |
66a4c743 LP |
701 | if (r < 0) { |
702 | log_error("Failed to run event loop: %s", strerror(-r)); | |
703 | goto finish; | |
ad740100 | 704 | } |
7640a5de | 705 | |
7640a5de | 706 | finish: |
66a4c743 | 707 | context_free(&context, bus); |
7640a5de | 708 | |
7640a5de LP |
709 | return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; |
710 | } |