1012 lines
35 KiB
C
1012 lines
35 KiB
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
|
|
|
|
#include <errno.h>
|
|
#include <sys/utsname.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/types.h>
|
|
#include <unistd.h>
|
|
|
|
#include "alloc-util.h"
|
|
#include "bus-common-errors.h"
|
|
#include "bus-log-control-api.h"
|
|
#include "bus-polkit.h"
|
|
#include "def.h"
|
|
#include "env-file-label.h"
|
|
#include "env-file.h"
|
|
#include "env-util.h"
|
|
#include "fileio-label.h"
|
|
#include "fileio.h"
|
|
#include "hostname-util.h"
|
|
#include "id128-util.h"
|
|
#include "main-func.h"
|
|
#include "missing_capability.h"
|
|
#include "nscd-flush.h"
|
|
#include "nulstr-util.h"
|
|
#include "os-util.h"
|
|
#include "parse-util.h"
|
|
#include "path-util.h"
|
|
#include "selinux-util.h"
|
|
#include "service-util.h"
|
|
#include "signal-util.h"
|
|
#include "stat-util.h"
|
|
#include "strv.h"
|
|
#include "user-util.h"
|
|
#include "util.h"
|
|
#include "virt.h"
|
|
|
|
#define VALID_DEPLOYMENT_CHARS (DIGITS LETTERS "-.:")
|
|
|
|
enum {
|
|
/* Read from /etc/hostname */
|
|
PROP_STATIC_HOSTNAME,
|
|
|
|
/* Read from /etc/machine-info */
|
|
PROP_PRETTY_HOSTNAME,
|
|
PROP_ICON_NAME,
|
|
PROP_CHASSIS,
|
|
PROP_DEPLOYMENT,
|
|
PROP_LOCATION,
|
|
|
|
/* Read from /etc/os-release (or /usr/lib/os-release) */
|
|
PROP_OS_PRETTY_NAME,
|
|
PROP_OS_CPE_NAME,
|
|
PROP_OS_HOME_URL,
|
|
_PROP_MAX,
|
|
_PROP_INVALID = -1,
|
|
};
|
|
|
|
typedef struct Context {
|
|
char *data[_PROP_MAX];
|
|
|
|
struct stat etc_hostname_stat;
|
|
struct stat etc_os_release_stat;
|
|
struct stat etc_machine_info_stat;
|
|
|
|
Hashmap *polkit_registry;
|
|
} Context;
|
|
|
|
static void context_reset(Context *c, uint64_t mask) {
|
|
int p;
|
|
|
|
assert(c);
|
|
|
|
for (p = 0; p < _PROP_MAX; p++) {
|
|
if (!FLAGS_SET(mask, UINT64_C(1) << p))
|
|
continue;
|
|
|
|
c->data[p] = mfree(c->data[p]);
|
|
}
|
|
}
|
|
|
|
static void context_destroy(Context *c) {
|
|
assert(c);
|
|
|
|
context_reset(c, UINT64_MAX);
|
|
bus_verify_polkit_async_registry_free(c->polkit_registry);
|
|
}
|
|
|
|
static void context_read_etc_hostname(Context *c) {
|
|
struct stat current_stat = {};
|
|
int r;
|
|
|
|
assert(c);
|
|
|
|
if (stat("/etc/hostname", ¤t_stat) >= 0 &&
|
|
stat_inode_unmodified(&c->etc_hostname_stat, ¤t_stat))
|
|
return;
|
|
|
|
context_reset(c, UINT64_C(1) << PROP_STATIC_HOSTNAME);
|
|
|
|
r = read_etc_hostname(NULL, &c->data[PROP_STATIC_HOSTNAME]);
|
|
if (r < 0 && r != -ENOENT)
|
|
log_warning_errno(r, "Failed to read /etc/hostname, ignoring: %m");
|
|
|
|
c->etc_hostname_stat = current_stat;
|
|
}
|
|
|
|
static void context_read_machine_info(Context *c) {
|
|
struct stat current_stat = {};
|
|
int r;
|
|
|
|
assert(c);
|
|
|
|
if (stat("/etc/machine-info", ¤t_stat) >= 0 &&
|
|
stat_inode_unmodified(&c->etc_machine_info_stat, ¤t_stat))
|
|
return;
|
|
|
|
context_reset(c,
|
|
(UINT64_C(1) << PROP_PRETTY_HOSTNAME) |
|
|
(UINT64_C(1) << PROP_ICON_NAME) |
|
|
(UINT64_C(1) << PROP_CHASSIS) |
|
|
(UINT64_C(1) << PROP_DEPLOYMENT) |
|
|
(UINT64_C(1) << PROP_LOCATION));
|
|
|
|
r = parse_env_file(NULL, "/etc/machine-info",
|
|
"PRETTY_HOSTNAME", &c->data[PROP_PRETTY_HOSTNAME],
|
|
"ICON_NAME", &c->data[PROP_ICON_NAME],
|
|
"CHASSIS", &c->data[PROP_CHASSIS],
|
|
"DEPLOYMENT", &c->data[PROP_DEPLOYMENT],
|
|
"LOCATION", &c->data[PROP_LOCATION]);
|
|
if (r < 0 && r != -ENOENT)
|
|
log_warning_errno(r, "Failed to read /etc/machine-info, ignoring: %m");
|
|
|
|
c->etc_machine_info_stat = current_stat;
|
|
}
|
|
|
|
static void context_read_os_release(Context *c) {
|
|
struct stat current_stat = {};
|
|
int r;
|
|
|
|
assert(c);
|
|
|
|
if ((stat("/etc/os-release", ¤t_stat) >= 0 ||
|
|
stat("/usr/lib/os-release", ¤t_stat) >= 0) &&
|
|
stat_inode_unmodified(&c->etc_os_release_stat, ¤t_stat))
|
|
return;
|
|
|
|
context_reset(c,
|
|
(UINT64_C(1) << PROP_OS_PRETTY_NAME) |
|
|
(UINT64_C(1) << PROP_OS_CPE_NAME) |
|
|
(UINT64_C(1) << PROP_OS_HOME_URL));
|
|
|
|
r = parse_os_release(NULL,
|
|
"PRETTY_NAME", &c->data[PROP_OS_PRETTY_NAME],
|
|
"CPE_NAME", &c->data[PROP_OS_CPE_NAME],
|
|
"HOME_URL", &c->data[PROP_OS_HOME_URL],
|
|
NULL);
|
|
if (r < 0 && r != -ENOENT)
|
|
log_warning_errno(r, "Failed to read os-release file, ignoring: %m");
|
|
|
|
c->etc_os_release_stat = current_stat;
|
|
}
|
|
|
|
static bool valid_chassis(const char *chassis) {
|
|
assert(chassis);
|
|
|
|
return nulstr_contains(
|
|
"vm\0"
|
|
"container\0"
|
|
"desktop\0"
|
|
"laptop\0"
|
|
"convertible\0"
|
|
"server\0"
|
|
"tablet\0"
|
|
"handset\0"
|
|
"watch\0"
|
|
"embedded\0",
|
|
chassis);
|
|
}
|
|
|
|
static bool valid_deployment(const char *deployment) {
|
|
assert(deployment);
|
|
|
|
return in_charset(deployment, VALID_DEPLOYMENT_CHARS);
|
|
}
|
|
|
|
static const char* fallback_chassis(void) {
|
|
char *type;
|
|
unsigned t;
|
|
int v, r;
|
|
|
|
v = detect_virtualization();
|
|
if (v < 0)
|
|
log_debug_errno(v, "Failed to detect virtualization, ignoring: %m");
|
|
else if (VIRTUALIZATION_IS_VM(v))
|
|
return "vm";
|
|
else if (VIRTUALIZATION_IS_CONTAINER(v))
|
|
return "container";
|
|
|
|
r = read_one_line_file("/sys/class/dmi/id/chassis_type", &type);
|
|
if (r < 0) {
|
|
log_debug_errno(v, "Failed to read DMI chassis type, ignoring: %m");
|
|
goto try_acpi;
|
|
}
|
|
|
|
r = safe_atou(type, &t);
|
|
free(type);
|
|
if (r < 0) {
|
|
log_debug_errno(v, "Failed to parse DMI chassis type, ignoring: %m");
|
|
goto try_acpi;
|
|
}
|
|
|
|
/* We only list the really obvious cases here. The DMI data is unreliable enough, so let's not do any
|
|
additional guesswork on top of that.
|
|
|
|
See the SMBIOS Specification 3.0 section 7.4.1 for details about the values listed here:
|
|
|
|
https://www.dmtf.org/sites/default/files/standards/documents/DSP0134_3.0.0.pdf
|
|
*/
|
|
|
|
switch (t) {
|
|
|
|
case 0x3: /* Desktop */
|
|
case 0x4: /* Low Profile Desktop */
|
|
case 0x6: /* Mini Tower */
|
|
case 0x7: /* Tower */
|
|
case 0xD: /* All in one (i.e. PC built into monitor) */
|
|
return "desktop";
|
|
|
|
case 0x8: /* Portable */
|
|
case 0x9: /* Laptop */
|
|
case 0xA: /* Notebook */
|
|
case 0xE: /* Sub Notebook */
|
|
return "laptop";
|
|
|
|
case 0xB: /* Hand Held */
|
|
return "handset";
|
|
|
|
case 0x11: /* Main Server Chassis */
|
|
case 0x1C: /* Blade */
|
|
case 0x1D: /* Blade Enclosure */
|
|
return "server";
|
|
|
|
case 0x1E: /* Tablet */
|
|
return "tablet";
|
|
|
|
case 0x1F: /* Convertible */
|
|
case 0x20: /* Detachable */
|
|
return "convertible";
|
|
|
|
default:
|
|
log_debug("Unhandled DMI chassis type 0x%02x, ignoring.", t);
|
|
}
|
|
|
|
try_acpi:
|
|
r = read_one_line_file("/sys/firmware/acpi/pm_profile", &type);
|
|
if (r < 0) {
|
|
log_debug_errno(v, "Failed read ACPI PM profile, ignoring: %m");
|
|
return NULL;
|
|
}
|
|
|
|
r = safe_atou(type, &t);
|
|
free(type);
|
|
if (r < 0) {
|
|
log_debug_errno(v, "Failed parse ACPI PM profile, ignoring: %m");
|
|
return NULL;
|
|
}
|
|
|
|
/* We only list the really obvious cases here as the ACPI data is not really super reliable.
|
|
*
|
|
* See the ACPI 5.0 Spec Section 5.2.9.1 for details:
|
|
*
|
|
* http://www.acpi.info/DOWNLOADS/ACPIspec50.pdf
|
|
*/
|
|
|
|
switch(t) {
|
|
|
|
case 1: /* Desktop */
|
|
case 3: /* Workstation */
|
|
case 6: /* Appliance PC */
|
|
return "desktop";
|
|
|
|
case 2: /* Mobile */
|
|
return "laptop";
|
|
|
|
case 4: /* Enterprise Server */
|
|
case 5: /* SOHO Server */
|
|
case 7: /* Performance Server */
|
|
return "server";
|
|
|
|
case 8: /* Tablet */
|
|
return "tablet";
|
|
|
|
default:
|
|
log_debug("Unhandled ACPI PM profile 0x%02x, ignoring.", t);
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static char* context_fallback_icon_name(Context *c) {
|
|
const char *chassis;
|
|
|
|
assert(c);
|
|
|
|
if (!isempty(c->data[PROP_CHASSIS]))
|
|
return strjoin("computer-", c->data[PROP_CHASSIS]);
|
|
|
|
chassis = fallback_chassis();
|
|
if (chassis)
|
|
return strjoin("computer-", chassis);
|
|
|
|
return strdup("computer");
|
|
}
|
|
|
|
static bool hostname_is_useful(const char *hn) {
|
|
return !isempty(hn) && !is_localhost(hn);
|
|
}
|
|
|
|
static int context_update_kernel_hostname(
|
|
Context *c,
|
|
const char *transient_hn) {
|
|
|
|
const char *static_hn, *hn;
|
|
struct utsname u;
|
|
|
|
assert(c);
|
|
|
|
if (!transient_hn) {
|
|
/* If no transient hostname is passed in, then let's check what is currently set. */
|
|
assert_se(uname(&u) >= 0);
|
|
transient_hn =
|
|
isempty(u.nodename) || streq(u.nodename, "(none)") ? NULL : u.nodename;
|
|
}
|
|
|
|
static_hn = c->data[PROP_STATIC_HOSTNAME];
|
|
|
|
/* /etc/hostname with something other than "localhost"
|
|
* has the highest preference ... */
|
|
if (hostname_is_useful(static_hn))
|
|
hn = static_hn;
|
|
|
|
/* ... the transient hostname, (ie: DHCP) comes next ... */
|
|
else if (!isempty(transient_hn))
|
|
hn = transient_hn;
|
|
|
|
/* ... fallback to static "localhost.*" ignored above ... */
|
|
else if (!isempty(static_hn))
|
|
hn = static_hn;
|
|
|
|
/* ... and the ultimate fallback */
|
|
else
|
|
hn = FALLBACK_HOSTNAME;
|
|
|
|
if (sethostname_idempotent(hn) < 0)
|
|
return -errno;
|
|
|
|
(void) nscd_flush_cache(STRV_MAKE("hosts"));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int context_write_data_static_hostname(Context *c) {
|
|
assert(c);
|
|
|
|
if (isempty(c->data[PROP_STATIC_HOSTNAME])) {
|
|
|
|
if (unlink("/etc/hostname") < 0)
|
|
return errno == ENOENT ? 0 : -errno;
|
|
|
|
return 0;
|
|
}
|
|
return write_string_file_atomic_label("/etc/hostname", c->data[PROP_STATIC_HOSTNAME]);
|
|
}
|
|
|
|
static int context_write_data_machine_info(Context *c) {
|
|
|
|
static const char * const name[_PROP_MAX] = {
|
|
[PROP_PRETTY_HOSTNAME] = "PRETTY_HOSTNAME",
|
|
[PROP_ICON_NAME] = "ICON_NAME",
|
|
[PROP_CHASSIS] = "CHASSIS",
|
|
[PROP_DEPLOYMENT] = "DEPLOYMENT",
|
|
[PROP_LOCATION] = "LOCATION",
|
|
};
|
|
|
|
_cleanup_strv_free_ char **l = NULL;
|
|
int r, p;
|
|
|
|
assert(c);
|
|
|
|
r = load_env_file(NULL, "/etc/machine-info", &l);
|
|
if (r < 0 && r != -ENOENT)
|
|
return r;
|
|
|
|
for (p = PROP_PRETTY_HOSTNAME; p <= PROP_LOCATION; p++) {
|
|
_cleanup_free_ char *t = NULL;
|
|
char **u;
|
|
|
|
assert(name[p]);
|
|
|
|
if (isempty(c->data[p])) {
|
|
strv_env_unset(l, name[p]);
|
|
continue;
|
|
}
|
|
|
|
t = strjoin(name[p], "=", c->data[p]);
|
|
if (!t)
|
|
return -ENOMEM;
|
|
|
|
u = strv_env_set(l, t);
|
|
if (!u)
|
|
return -ENOMEM;
|
|
|
|
strv_free_and_replace(l, u);
|
|
}
|
|
|
|
if (strv_isempty(l)) {
|
|
if (unlink("/etc/machine-info") < 0)
|
|
return errno == ENOENT ? 0 : -errno;
|
|
|
|
return 0;
|
|
}
|
|
|
|
return write_env_file_label("/etc/machine-info", l);
|
|
}
|
|
|
|
static int property_get_hostname(
|
|
sd_bus *bus,
|
|
const char *path,
|
|
const char *interface,
|
|
const char *property,
|
|
sd_bus_message *reply,
|
|
void *userdata,
|
|
sd_bus_error *error) {
|
|
|
|
_cleanup_free_ char *current = NULL;
|
|
int r;
|
|
|
|
r = gethostname_strict(¤t);
|
|
if (r == -ENXIO)
|
|
return sd_bus_message_append(reply, "s", FALLBACK_HOSTNAME);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
return sd_bus_message_append(reply, "s", current);
|
|
}
|
|
|
|
static int property_get_static_hostname(
|
|
sd_bus *bus,
|
|
const char *path,
|
|
const char *interface,
|
|
const char *property,
|
|
sd_bus_message *reply,
|
|
void *userdata,
|
|
sd_bus_error *error) {
|
|
|
|
Context *c = userdata;
|
|
assert(c);
|
|
|
|
context_read_etc_hostname(c);
|
|
|
|
return sd_bus_message_append(reply, "s", c->data[PROP_STATIC_HOSTNAME]);
|
|
}
|
|
|
|
static int property_get_machine_info_field(
|
|
sd_bus *bus,
|
|
const char *path,
|
|
const char *interface,
|
|
const char *property,
|
|
sd_bus_message *reply,
|
|
void *userdata,
|
|
sd_bus_error *error) {
|
|
|
|
sd_bus_slot *slot;
|
|
Context *c;
|
|
|
|
/* Acquire the context object without this property's userdata offset added. Explanation: we want
|
|
* access to two pointers here: a) the main context object we cache all properties in, and b) the
|
|
* pointer to the property field inside the context object that we are supposed to update and
|
|
* use. The latter (b) we get in the 'userdata' function parameter, and sd-bus calculates that for us
|
|
* from the 'userdata' pointer we supplied when the vtable was registered, with the offset we
|
|
* specified in the vtable added on top. To get the former (a) we need the 'userdata' pointer from
|
|
* the vtable registration directly, without the offset added. Hence we ask sd-bus what the slot
|
|
* object is (which encapsulates the vtable registration), and then query the 'userdata' field
|
|
* directly off it. */
|
|
assert_se(slot = sd_bus_get_current_slot(bus));
|
|
assert_se(c = sd_bus_slot_get_userdata(slot));
|
|
|
|
context_read_machine_info(c);
|
|
|
|
return sd_bus_message_append(reply, "s", *(char**) userdata);
|
|
}
|
|
|
|
static int property_get_os_release_field(
|
|
sd_bus *bus,
|
|
const char *path,
|
|
const char *interface,
|
|
const char *property,
|
|
sd_bus_message *reply,
|
|
void *userdata,
|
|
sd_bus_error *error) {
|
|
|
|
sd_bus_slot *slot;
|
|
Context *c;
|
|
|
|
/* As above, acquire the current context without this property's userdata offset added. */
|
|
assert_se(slot = sd_bus_get_current_slot(bus));
|
|
assert_se(c = sd_bus_slot_get_userdata(slot));
|
|
|
|
context_read_os_release(c);
|
|
|
|
return sd_bus_message_append(reply, "s", *(char**) userdata);
|
|
}
|
|
|
|
static int property_get_icon_name(
|
|
sd_bus *bus,
|
|
const char *path,
|
|
const char *interface,
|
|
const char *property,
|
|
sd_bus_message *reply,
|
|
void *userdata,
|
|
sd_bus_error *error) {
|
|
|
|
_cleanup_free_ char *n = NULL;
|
|
Context *c = userdata;
|
|
const char *name;
|
|
|
|
context_read_machine_info(c);
|
|
|
|
if (isempty(c->data[PROP_ICON_NAME]))
|
|
name = n = context_fallback_icon_name(c);
|
|
else
|
|
name = c->data[PROP_ICON_NAME];
|
|
|
|
if (!name)
|
|
return -ENOMEM;
|
|
|
|
return sd_bus_message_append(reply, "s", name);
|
|
}
|
|
|
|
static int property_get_chassis(
|
|
sd_bus *bus,
|
|
const char *path,
|
|
const char *interface,
|
|
const char *property,
|
|
sd_bus_message *reply,
|
|
void *userdata,
|
|
sd_bus_error *error) {
|
|
|
|
Context *c = userdata;
|
|
const char *name;
|
|
|
|
context_read_machine_info(c);
|
|
|
|
if (isempty(c->data[PROP_CHASSIS]))
|
|
name = fallback_chassis();
|
|
else
|
|
name = c->data[PROP_CHASSIS];
|
|
|
|
return sd_bus_message_append(reply, "s", name);
|
|
}
|
|
|
|
static int property_get_uname_field(
|
|
sd_bus *bus,
|
|
const char *path,
|
|
const char *interface,
|
|
const char *property,
|
|
sd_bus_message *reply,
|
|
void *userdata,
|
|
sd_bus_error *error) {
|
|
|
|
struct utsname u;
|
|
|
|
assert_se(uname(&u) >= 0);
|
|
|
|
return sd_bus_message_append(reply, "s", (char*) &u + PTR_TO_SIZE(userdata));
|
|
}
|
|
|
|
static int method_set_hostname(sd_bus_message *m, void *userdata, sd_bus_error *error) {
|
|
Context *c = userdata;
|
|
const char *name;
|
|
int interactive, r;
|
|
struct utsname u;
|
|
|
|
assert(m);
|
|
assert(c);
|
|
|
|
r = sd_bus_message_read(m, "sb", &name, &interactive);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
context_read_etc_hostname(c);
|
|
|
|
if (isempty(name))
|
|
name = c->data[PROP_STATIC_HOSTNAME];
|
|
|
|
if (isempty(name))
|
|
name = FALLBACK_HOSTNAME;
|
|
|
|
if (!hostname_is_valid(name, false))
|
|
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid hostname '%s'", name);
|
|
|
|
assert_se(uname(&u) >= 0);
|
|
if (streq_ptr(name, u.nodename))
|
|
return sd_bus_reply_method_return(m, NULL);
|
|
|
|
r = bus_verify_polkit_async(
|
|
m,
|
|
CAP_SYS_ADMIN,
|
|
"org.freedesktop.hostname1.set-hostname",
|
|
NULL,
|
|
interactive,
|
|
UID_INVALID,
|
|
&c->polkit_registry,
|
|
error);
|
|
if (r < 0)
|
|
return r;
|
|
if (r == 0)
|
|
return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
|
|
|
|
r = context_update_kernel_hostname(c, name);
|
|
if (r < 0) {
|
|
log_error_errno(r, "Failed to set hostname: %m");
|
|
return sd_bus_error_set_errnof(error, r, "Failed to set hostname: %m");
|
|
}
|
|
|
|
log_info("Changed hostname to '%s'", name);
|
|
|
|
(void) sd_bus_emit_properties_changed(sd_bus_message_get_bus(m), "/org/freedesktop/hostname1", "org.freedesktop.hostname1", "Hostname", NULL);
|
|
|
|
return sd_bus_reply_method_return(m, NULL);
|
|
}
|
|
|
|
static int method_set_static_hostname(sd_bus_message *m, void *userdata, sd_bus_error *error) {
|
|
Context *c = userdata;
|
|
const char *name;
|
|
int interactive;
|
|
int r;
|
|
|
|
assert(m);
|
|
assert(c);
|
|
|
|
r = sd_bus_message_read(m, "sb", &name, &interactive);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
name = empty_to_null(name);
|
|
|
|
context_read_etc_hostname(c);
|
|
|
|
if (streq_ptr(name, c->data[PROP_STATIC_HOSTNAME]))
|
|
return sd_bus_reply_method_return(m, NULL);
|
|
|
|
if (!isempty(name) && !hostname_is_valid(name, false))
|
|
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid static hostname '%s'", name);
|
|
|
|
r = bus_verify_polkit_async(
|
|
m,
|
|
CAP_SYS_ADMIN,
|
|
"org.freedesktop.hostname1.set-static-hostname",
|
|
NULL,
|
|
interactive,
|
|
UID_INVALID,
|
|
&c->polkit_registry,
|
|
error);
|
|
if (r < 0)
|
|
return r;
|
|
if (r == 0)
|
|
return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
|
|
|
|
r = free_and_strdup(&c->data[PROP_STATIC_HOSTNAME], name);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = context_update_kernel_hostname(c, NULL);
|
|
if (r < 0) {
|
|
log_error_errno(r, "Failed to set hostname: %m");
|
|
return sd_bus_error_set_errnof(error, r, "Failed to set hostname: %m");
|
|
}
|
|
|
|
r = context_write_data_static_hostname(c);
|
|
if (r < 0) {
|
|
log_error_errno(r, "Failed to write static hostname: %m");
|
|
return sd_bus_error_set_errnof(error, r, "Failed to set static hostname: %m");
|
|
}
|
|
|
|
log_info("Changed static hostname to '%s'", strna(c->data[PROP_STATIC_HOSTNAME]));
|
|
|
|
(void) sd_bus_emit_properties_changed(sd_bus_message_get_bus(m), "/org/freedesktop/hostname1", "org.freedesktop.hostname1", "StaticHostname", NULL);
|
|
|
|
return sd_bus_reply_method_return(m, NULL);
|
|
}
|
|
|
|
static int set_machine_info(Context *c, sd_bus_message *m, int prop, sd_bus_message_handler_t cb, sd_bus_error *error) {
|
|
int interactive;
|
|
const char *name;
|
|
int r;
|
|
|
|
assert(c);
|
|
assert(m);
|
|
|
|
r = sd_bus_message_read(m, "sb", &name, &interactive);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
name = empty_to_null(name);
|
|
|
|
context_read_machine_info(c);
|
|
|
|
if (streq_ptr(name, c->data[prop]))
|
|
return sd_bus_reply_method_return(m, NULL);
|
|
|
|
if (!isempty(name)) {
|
|
/* The icon name might ultimately be used as file
|
|
* name, so better be safe than sorry */
|
|
|
|
if (prop == PROP_ICON_NAME && !filename_is_valid(name))
|
|
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid icon name '%s'", name);
|
|
if (prop == PROP_PRETTY_HOSTNAME && string_has_cc(name, NULL))
|
|
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid pretty hostname '%s'", name);
|
|
if (prop == PROP_CHASSIS && !valid_chassis(name))
|
|
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid chassis '%s'", name);
|
|
if (prop == PROP_DEPLOYMENT && !valid_deployment(name))
|
|
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid deployment '%s'", name);
|
|
if (prop == PROP_LOCATION && string_has_cc(name, NULL))
|
|
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid location '%s'", name);
|
|
}
|
|
|
|
/* Since the pretty hostname should always be changed at the
|
|
* same time as the static one, use the same policy action for
|
|
* both... */
|
|
|
|
r = bus_verify_polkit_async(
|
|
m,
|
|
CAP_SYS_ADMIN,
|
|
prop == PROP_PRETTY_HOSTNAME ? "org.freedesktop.hostname1.set-static-hostname" : "org.freedesktop.hostname1.set-machine-info",
|
|
NULL,
|
|
interactive,
|
|
UID_INVALID,
|
|
&c->polkit_registry,
|
|
error);
|
|
if (r < 0)
|
|
return r;
|
|
if (r == 0)
|
|
return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
|
|
|
|
r = free_and_strdup(&c->data[prop], name);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = context_write_data_machine_info(c);
|
|
if (r < 0) {
|
|
log_error_errno(r, "Failed to write machine info: %m");
|
|
return sd_bus_error_set_errnof(error, r, "Failed to write machine info: %m");
|
|
}
|
|
|
|
log_info("Changed %s to '%s'",
|
|
prop == PROP_PRETTY_HOSTNAME ? "pretty hostname" :
|
|
prop == PROP_DEPLOYMENT ? "deployment" :
|
|
prop == PROP_LOCATION ? "location" :
|
|
prop == PROP_CHASSIS ? "chassis" : "icon name", strna(c->data[prop]));
|
|
|
|
(void) sd_bus_emit_properties_changed(
|
|
sd_bus_message_get_bus(m),
|
|
"/org/freedesktop/hostname1",
|
|
"org.freedesktop.hostname1",
|
|
prop == PROP_PRETTY_HOSTNAME ? "PrettyHostname" :
|
|
prop == PROP_DEPLOYMENT ? "Deployment" :
|
|
prop == PROP_LOCATION ? "Location" :
|
|
prop == PROP_CHASSIS ? "Chassis" : "IconName" , NULL);
|
|
|
|
return sd_bus_reply_method_return(m, NULL);
|
|
}
|
|
|
|
static int method_set_pretty_hostname(sd_bus_message *m, void *userdata, sd_bus_error *error) {
|
|
return set_machine_info(userdata, m, PROP_PRETTY_HOSTNAME, method_set_pretty_hostname, error);
|
|
}
|
|
|
|
static int method_set_icon_name(sd_bus_message *m, void *userdata, sd_bus_error *error) {
|
|
return set_machine_info(userdata, m, PROP_ICON_NAME, method_set_icon_name, error);
|
|
}
|
|
|
|
static int method_set_chassis(sd_bus_message *m, void *userdata, sd_bus_error *error) {
|
|
return set_machine_info(userdata, m, PROP_CHASSIS, method_set_chassis, error);
|
|
}
|
|
|
|
static int method_set_deployment(sd_bus_message *m, void *userdata, sd_bus_error *error) {
|
|
return set_machine_info(userdata, m, PROP_DEPLOYMENT, method_set_deployment, error);
|
|
}
|
|
|
|
static int method_set_location(sd_bus_message *m, void *userdata, sd_bus_error *error) {
|
|
return set_machine_info(userdata, m, PROP_LOCATION, method_set_location, error);
|
|
}
|
|
|
|
static int method_get_product_uuid(sd_bus_message *m, void *userdata, sd_bus_error *error) {
|
|
_cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
|
|
Context *c = userdata;
|
|
bool has_uuid = false;
|
|
int interactive, r;
|
|
sd_id128_t uuid;
|
|
|
|
assert(m);
|
|
assert(c);
|
|
|
|
r = id128_read("/sys/class/dmi/id/product_uuid", ID128_UUID, &uuid);
|
|
if (r == -ENOENT)
|
|
r = id128_read("/sys/firmware/devicetree/base/vm,uuid", ID128_UUID, &uuid);
|
|
if (r < 0)
|
|
log_full_errno(r == -ENOENT ? LOG_DEBUG : LOG_WARNING, r,
|
|
"Failed to read product UUID, ignoring: %m");
|
|
else if (sd_id128_is_null(uuid) || sd_id128_is_allf(uuid))
|
|
log_debug("DMI product UUID " SD_ID128_FORMAT_STR " is all 0x00 or all 0xFF, ignoring.", SD_ID128_FORMAT_VAL(uuid));
|
|
else
|
|
has_uuid = true;
|
|
|
|
if (!has_uuid)
|
|
return sd_bus_error_set(error, BUS_ERROR_NO_PRODUCT_UUID,
|
|
"Failed to read product UUID from firmware.");
|
|
|
|
r = sd_bus_message_read(m, "b", &interactive);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = bus_verify_polkit_async(
|
|
m,
|
|
CAP_SYS_ADMIN,
|
|
"org.freedesktop.hostname1.get-product-uuid",
|
|
NULL,
|
|
interactive,
|
|
UID_INVALID,
|
|
&c->polkit_registry,
|
|
error);
|
|
if (r < 0)
|
|
return r;
|
|
if (r == 0)
|
|
return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
|
|
|
|
r = sd_bus_message_new_method_return(m, &reply);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_message_append_array(reply, 'y', &uuid, sizeof(uuid));
|
|
if (r < 0)
|
|
return r;
|
|
|
|
return sd_bus_send(NULL, reply, NULL);
|
|
}
|
|
|
|
static const sd_bus_vtable hostname_vtable[] = {
|
|
SD_BUS_VTABLE_START(0),
|
|
SD_BUS_PROPERTY("Hostname", "s", property_get_hostname, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
|
|
SD_BUS_PROPERTY("StaticHostname", "s", property_get_static_hostname, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
|
|
SD_BUS_PROPERTY("PrettyHostname", "s", property_get_machine_info_field, offsetof(Context, data) + sizeof(char*) * PROP_PRETTY_HOSTNAME, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
|
|
SD_BUS_PROPERTY("IconName", "s", property_get_icon_name, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
|
|
SD_BUS_PROPERTY("Chassis", "s", property_get_chassis, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
|
|
SD_BUS_PROPERTY("Deployment", "s", property_get_machine_info_field, offsetof(Context, data) + sizeof(char*) * PROP_DEPLOYMENT, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
|
|
SD_BUS_PROPERTY("Location", "s", property_get_machine_info_field, offsetof(Context, data) + sizeof(char*) * PROP_LOCATION, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
|
|
SD_BUS_PROPERTY("KernelName", "s", property_get_uname_field, offsetof(struct utsname, sysname), SD_BUS_VTABLE_ABSOLUTE_OFFSET|SD_BUS_VTABLE_PROPERTY_CONST),
|
|
SD_BUS_PROPERTY("KernelRelease", "s", property_get_uname_field, offsetof(struct utsname, release), SD_BUS_VTABLE_ABSOLUTE_OFFSET|SD_BUS_VTABLE_PROPERTY_CONST),
|
|
SD_BUS_PROPERTY("KernelVersion", "s", property_get_uname_field, offsetof(struct utsname, version), SD_BUS_VTABLE_ABSOLUTE_OFFSET|SD_BUS_VTABLE_PROPERTY_CONST),
|
|
SD_BUS_PROPERTY("OperatingSystemPrettyName", "s", property_get_os_release_field, offsetof(Context, data) + sizeof(char*) * PROP_OS_PRETTY_NAME, SD_BUS_VTABLE_PROPERTY_CONST),
|
|
SD_BUS_PROPERTY("OperatingSystemCPEName", "s", property_get_os_release_field, offsetof(Context, data) + sizeof(char*) * PROP_OS_CPE_NAME, SD_BUS_VTABLE_PROPERTY_CONST),
|
|
SD_BUS_PROPERTY("HomeURL", "s", property_get_os_release_field, offsetof(Context, data) + sizeof(char*) * PROP_OS_HOME_URL, SD_BUS_VTABLE_PROPERTY_CONST),
|
|
|
|
SD_BUS_METHOD_WITH_NAMES("SetHostname",
|
|
"sb",
|
|
SD_BUS_PARAM(hostname)
|
|
SD_BUS_PARAM(interactive),
|
|
NULL,,
|
|
method_set_hostname,
|
|
SD_BUS_VTABLE_UNPRIVILEGED),
|
|
SD_BUS_METHOD_WITH_NAMES("SetStaticHostname",
|
|
"sb",
|
|
SD_BUS_PARAM(hostname)
|
|
SD_BUS_PARAM(interactive),
|
|
NULL,,
|
|
method_set_static_hostname,
|
|
SD_BUS_VTABLE_UNPRIVILEGED),
|
|
SD_BUS_METHOD_WITH_NAMES("SetPrettyHostname",
|
|
"sb",
|
|
SD_BUS_PARAM(hostname)
|
|
SD_BUS_PARAM(interactive),
|
|
NULL,,
|
|
method_set_pretty_hostname,
|
|
SD_BUS_VTABLE_UNPRIVILEGED),
|
|
SD_BUS_METHOD_WITH_NAMES("SetIconName",
|
|
"sb",
|
|
SD_BUS_PARAM(icon)
|
|
SD_BUS_PARAM(interactive),
|
|
NULL,,
|
|
method_set_icon_name,
|
|
SD_BUS_VTABLE_UNPRIVILEGED),
|
|
SD_BUS_METHOD_WITH_NAMES("SetChassis",
|
|
"sb",
|
|
SD_BUS_PARAM(chassis)
|
|
SD_BUS_PARAM(interactive),
|
|
NULL,,
|
|
method_set_chassis,
|
|
SD_BUS_VTABLE_UNPRIVILEGED),
|
|
SD_BUS_METHOD_WITH_NAMES("SetDeployment",
|
|
"sb",
|
|
SD_BUS_PARAM(deployment)
|
|
SD_BUS_PARAM(interactive),
|
|
NULL,,
|
|
method_set_deployment,
|
|
SD_BUS_VTABLE_UNPRIVILEGED),
|
|
SD_BUS_METHOD_WITH_NAMES("SetLocation",
|
|
"sb",
|
|
SD_BUS_PARAM(location)
|
|
SD_BUS_PARAM(interactive),
|
|
NULL,,
|
|
method_set_location,
|
|
SD_BUS_VTABLE_UNPRIVILEGED),
|
|
SD_BUS_METHOD_WITH_NAMES("GetProductUUID",
|
|
"b",
|
|
SD_BUS_PARAM(interactive),
|
|
"ay",
|
|
SD_BUS_PARAM(uuid),
|
|
method_get_product_uuid,
|
|
SD_BUS_VTABLE_UNPRIVILEGED),
|
|
|
|
SD_BUS_VTABLE_END,
|
|
};
|
|
|
|
static const BusObjectImplementation manager_object = {
|
|
"/org/freedesktop/hostname1",
|
|
"org.freedesktop.hostname1",
|
|
.vtables = BUS_VTABLES(hostname_vtable),
|
|
};
|
|
|
|
static int connect_bus(Context *c, sd_event *event, sd_bus **ret) {
|
|
_cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
|
|
int r;
|
|
|
|
assert(c);
|
|
assert(event);
|
|
assert(ret);
|
|
|
|
r = sd_bus_default_system(&bus);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to get system bus connection: %m");
|
|
|
|
r = bus_add_implementation(bus, &manager_object, c);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = bus_log_control_api_register(bus);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_request_name_async(bus, NULL, "org.freedesktop.hostname1", 0, NULL, NULL);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to request name: %m");
|
|
|
|
r = sd_bus_attach_event(bus, event, 0);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to attach bus to event loop: %m");
|
|
|
|
*ret = TAKE_PTR(bus);
|
|
return 0;
|
|
}
|
|
|
|
static int run(int argc, char *argv[]) {
|
|
_cleanup_(context_destroy) Context context = {};
|
|
_cleanup_(sd_event_unrefp) sd_event *event = NULL;
|
|
_cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
|
|
int r;
|
|
|
|
log_setup_service();
|
|
|
|
r = service_parse_argv("systemd-hostnamed.service",
|
|
"Manage the system hostname and related metadata.",
|
|
BUS_IMPLEMENTATIONS(&manager_object,
|
|
&log_control_object),
|
|
argc, argv);
|
|
if (r <= 0)
|
|
return r;
|
|
|
|
umask(0022);
|
|
|
|
r = mac_selinux_init();
|
|
if (r < 0)
|
|
return r;
|
|
|
|
assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGTERM, SIGINT, -1) >= 0);
|
|
|
|
r = sd_event_default(&event);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to allocate event loop: %m");
|
|
|
|
(void) sd_event_set_watchdog(event, true);
|
|
|
|
r = sd_event_add_signal(event, NULL, SIGINT, NULL, NULL);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to install SIGINT handler: %m");
|
|
|
|
r = sd_event_add_signal(event, NULL, SIGTERM, NULL, NULL);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to install SIGTERM handler: %m");
|
|
|
|
r = connect_bus(&context, event, &bus);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = bus_event_loop_with_idle(event, bus, "org.freedesktop.hostname1", DEFAULT_EXIT_USEC, NULL, NULL);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to run event loop: %m");
|
|
|
|
return 0;
|
|
}
|
|
|
|
DEFINE_MAIN_FUNCTION(run);
|