mirror of
https://github.com/systemd/systemd.git
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hostnamed: port over from libdbus to libsystemd-bus
This commit is contained in:
Lennart Poettering
parent
fe8245eb3c
commit
66a4c743c0
@ -3511,15 +3511,11 @@ if ENABLE_HOSTNAMED
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systemd_hostnamed_SOURCES = \
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src/hostname/hostnamed.c
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systemd_hostnamed_CFLAGS = \
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$(AM_CFLAGS) \
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$(DBUS_CFLAGS)
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systemd_hostnamed_LDADD = \
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libsystemd-label.la \
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libsystemd-shared.la \
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libsystemd-daemon.la \
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libsystemd-dbus.la
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libsystemd-bus.la
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rootlibexec_PROGRAMS += \
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systemd-hostnamed
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@ -19,8 +19,6 @@
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <dbus/dbus.h>
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#include <errno.h>
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#include <string.h>
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#include <unistd.h>
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@ -28,57 +26,13 @@
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#include "util.h"
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#include "strv.h"
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#include "dbus-common.h"
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#include "polkit.h"
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#include "def.h"
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#include "virt.h"
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#include "env-util.h"
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#include "fileio-label.h"
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#include "label.h"
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#define INTERFACE \
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" <interface name=\"org.freedesktop.hostname1\">\n" \
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" <property name=\"Hostname\" type=\"s\" access=\"read\"/>\n" \
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" <property name=\"StaticHostname\" type=\"s\" access=\"read\"/>\n" \
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" <property name=\"PrettyHostname\" type=\"s\" access=\"read\"/>\n" \
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" <property name=\"IconName\" type=\"s\" access=\"read\"/>\n" \
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" <property name=\"Chassis\" type=\"s\" access=\"read\"/>\n" \
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" <method name=\"SetHostname\">\n" \
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" <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \
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" <arg name=\"user_interaction\" type=\"b\" direction=\"in\"/>\n" \
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" </method>\n" \
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" <method name=\"SetStaticHostname\">\n" \
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" <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \
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" <arg name=\"user_interaction\" type=\"b\" direction=\"in\"/>\n" \
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" </method>\n" \
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" <method name=\"SetPrettyHostname\">\n" \
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" <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \
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" <arg name=\"user_interaction\" type=\"b\" direction=\"in\"/>\n" \
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" </method>\n" \
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" <method name=\"SetIconName\">\n" \
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" <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \
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" <arg name=\"user_interaction\" type=\"b\" direction=\"in\"/>\n" \
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" </method>\n" \
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" <method name=\"SetChassis\">\n" \
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" <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \
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" <arg name=\"user_interaction\" type=\"b\" direction=\"in\"/>\n" \
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" </method>\n" \
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" </interface>\n"
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#define INTROSPECTION \
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DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE \
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"<node>\n" \
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INTERFACE \
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BUS_PROPERTIES_INTERFACE \
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BUS_INTROSPECTABLE_INTERFACE \
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BUS_PEER_INTERFACE \
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"</node>\n"
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#define INTERFACES_LIST \
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BUS_GENERIC_INTERFACES_LIST \
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"org.freedesktop.hostname1\0"
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const char hostname_interface[] _introspect_("hostname1") = INTERFACE;
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#include "bus-util.h"
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#include "event-util.h"
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enum {
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PROP_HOSTNAME,
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@ -89,42 +43,48 @@ enum {
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_PROP_MAX
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};
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static char *data[_PROP_MAX] = {
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NULL,
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NULL,
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NULL,
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NULL,
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NULL
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};
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typedef struct Context {
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char *data[_PROP_MAX];
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Hashmap *polkit_registry;
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} Context;
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static usec_t remain_until = 0;
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static void free_data(void) {
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static void context_reset(Context *c) {
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int p;
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assert(c);
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for (p = 0; p < _PROP_MAX; p++) {
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free(data[p]);
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data[p] = NULL;
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free(c->data[p]);
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c->data[p] = NULL;
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}
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}
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static int read_data(void) {
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static void context_free(Context *c, sd_bus *bus) {
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assert(c);
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context_reset(c);
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bus_verify_polkit_async_registry_free(bus, c->polkit_registry);
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}
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static int context_read_data(Context *c) {
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int r;
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free_data();
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assert(c);
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data[PROP_HOSTNAME] = gethostname_malloc();
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if (!data[PROP_HOSTNAME])
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context_reset(c);
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c->data[PROP_HOSTNAME] = gethostname_malloc();
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if (!c->data[PROP_HOSTNAME])
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return -ENOMEM;
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r = read_one_line_file("/etc/hostname", &data[PROP_STATIC_HOSTNAME]);
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r = read_one_line_file("/etc/hostname", &c->data[PROP_STATIC_HOSTNAME]);
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if (r < 0 && r != -ENOENT)
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return r;
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r = parse_env_file("/etc/machine-info", NEWLINE,
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"PRETTY_HOSTNAME", &data[PROP_PRETTY_HOSTNAME],
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"ICON_NAME", &data[PROP_ICON_NAME],
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"CHASSIS", &data[PROP_CHASSIS],
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"PRETTY_HOSTNAME", &c->data[PROP_PRETTY_HOSTNAME],
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"ICON_NAME", &c->data[PROP_ICON_NAME],
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"CHASSIS", &c->data[PROP_CHASSIS],
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NULL);
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if (r < 0 && r != -ENOENT)
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return r;
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@ -253,11 +213,13 @@ try_dmi:
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return NULL;
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}
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static char* fallback_icon_name(void) {
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static char* context_fallback_icon_name(Context *c) {
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const char *chassis;
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if (!isempty(data[PROP_CHASSIS]))
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return strappend("computer-", data[PROP_CHASSIS]);
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assert(c);
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if (!isempty(c->data[PROP_CHASSIS]))
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return strappend("computer-", c->data[PROP_CHASSIS]);
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chassis = fallback_chassis();
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if (chassis)
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@ -266,13 +228,15 @@ static char* fallback_icon_name(void) {
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return strdup("computer");
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}
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static int write_data_hostname(void) {
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static int context_write_data_hostname(Context *c) {
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const char *hn;
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if (isempty(data[PROP_HOSTNAME]))
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assert(c);
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if (isempty(c->data[PROP_HOSTNAME]))
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hn = "localhost";
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else
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hn = data[PROP_HOSTNAME];
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hn = c->data[PROP_HOSTNAME];
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if (sethostname(hn, strlen(hn)) < 0)
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return -errno;
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@ -280,19 +244,21 @@ static int write_data_hostname(void) {
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return 0;
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}
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static int write_data_static_hostname(void) {
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static int context_write_data_static_hostname(Context *c) {
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if (isempty(data[PROP_STATIC_HOSTNAME])) {
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assert(c);
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if (isempty(c->data[PROP_STATIC_HOSTNAME])) {
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if (unlink("/etc/hostname") < 0)
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return errno == ENOENT ? 0 : -errno;
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return 0;
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}
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return write_string_file_atomic_label("/etc/hostname", data[PROP_STATIC_HOSTNAME]);
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return write_string_file_atomic_label("/etc/hostname", c->data[PROP_STATIC_HOSTNAME]);
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}
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static int write_data_other(void) {
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static int context_write_data_other(Context *c) {
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static const char * const name[_PROP_MAX] = {
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[PROP_PRETTY_HOSTNAME] = "PRETTY_HOSTNAME",
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@ -303,6 +269,8 @@ static int write_data_other(void) {
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char **l = NULL;
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int r, p;
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assert(c);
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r = load_env_file("/etc/machine-info", NULL, &l);
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if (r < 0 && r != -ENOENT)
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return r;
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@ -312,12 +280,12 @@ static int write_data_other(void) {
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assert(name[p]);
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if (isempty(data[p])) {
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if (isempty(c->data[p])) {
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strv_env_unset(l, name[p]);
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continue;
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}
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if (asprintf(&t, "%s=%s", name[p], strempty(data[p])) < 0) {
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if (asprintf(&t, "%s=%s", name[p], strempty(c->data[p])) < 0) {
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strv_free(l);
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return -ENOMEM;
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}
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@ -345,340 +313,313 @@ static int write_data_other(void) {
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return r;
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}
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static int bus_hostname_append_icon_name(DBusMessageIter *i, const char *property, void *userdata) {
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const char *name;
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_cleanup_free_ char *n = NULL;
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assert(i);
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assert(property);
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if (isempty(data[PROP_ICON_NAME]))
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name = n = fallback_icon_name();
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else
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name = data[PROP_ICON_NAME];
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return bus_property_append_string(i, property, (void*) name);
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}
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static int bus_hostname_append_chassis(DBusMessageIter *i, const char *property, void *userdata) {
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const char *name;
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assert(i);
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assert(property);
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if (isempty(data[PROP_CHASSIS]))
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name = fallback_chassis();
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else
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name = data[PROP_CHASSIS];
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return bus_property_append_string(i, property, (void*) name);
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}
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static const BusProperty bus_hostname_properties[] = {
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{ "Hostname", bus_property_append_string, "s", sizeof(data[0])*PROP_HOSTNAME, true },
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{ "StaticHostname", bus_property_append_string, "s", sizeof(data[0])*PROP_STATIC_HOSTNAME, true },
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{ "PrettyHostname", bus_property_append_string, "s", sizeof(data[0])*PROP_PRETTY_HOSTNAME, true },
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{ "IconName", bus_hostname_append_icon_name, "s", sizeof(data[0])*PROP_ICON_NAME, true },
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{ "Chassis", bus_hostname_append_chassis, "s", sizeof(data[0])*PROP_CHASSIS, true },
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{ NULL, }
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};
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static const BusBoundProperties bps[] = {
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{ "org.freedesktop.hostname1", bus_hostname_properties, data },
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{ NULL, }
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};
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static DBusHandlerResult hostname_message_handler(
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DBusConnection *connection,
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DBusMessage *message,
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static int property_get_icon_name(
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sd_bus *bus,
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const char *path,
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const char *interface,
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const char *property,
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sd_bus_message *reply,
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sd_bus_error *error,
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void *userdata) {
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DBusMessage *reply = NULL, *changed = NULL;
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DBusError error;
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_cleanup_free_ char *n = NULL;
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Context *c = userdata;
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const char *name;
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int r;
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assert(connection);
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assert(message);
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if (isempty(c->data[PROP_ICON_NAME]))
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name = n = context_fallback_icon_name(c);
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else
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name = c->data[PROP_ICON_NAME];
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dbus_error_init(&error);
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if (!name)
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return -ENOMEM;
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if (dbus_message_is_method_call(message, "org.freedesktop.hostname1", "SetHostname")) {
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const char *name;
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dbus_bool_t interactive;
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r = sd_bus_message_append(reply, "s", name);
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if (r < 0)
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return r;
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if (!dbus_message_get_args(
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message,
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&error,
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DBUS_TYPE_STRING, &name,
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DBUS_TYPE_BOOLEAN, &interactive,
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DBUS_TYPE_INVALID))
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return bus_send_error_reply(connection, message, &error, -EINVAL);
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if (isempty(name))
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name = data[PROP_STATIC_HOSTNAME];
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if (isempty(name))
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name = "localhost";
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if (!hostname_is_valid(name))
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return bus_send_error_reply(connection, message, NULL, -EINVAL);
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if (!streq_ptr(name, data[PROP_HOSTNAME])) {
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char *h;
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r = verify_polkit(connection, message, "org.freedesktop.hostname1.set-hostname", interactive, NULL, &error);
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if (r < 0)
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return bus_send_error_reply(connection, message, &error, r);
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h = strdup(name);
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if (!h)
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goto oom;
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free(data[PROP_HOSTNAME]);
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data[PROP_HOSTNAME] = h;
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r = write_data_hostname();
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if (r < 0) {
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log_error("Failed to set host name: %s", strerror(-r));
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return bus_send_error_reply(connection, message, NULL, r);
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}
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log_info("Changed host name to '%s'", strna(data[PROP_HOSTNAME]));
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changed = bus_properties_changed_new(
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"/org/freedesktop/hostname1",
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"org.freedesktop.hostname1",
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"Hostname\0");
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if (!changed)
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goto oom;
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}
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} else if (dbus_message_is_method_call(message, "org.freedesktop.hostname1", "SetStaticHostname")) {
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const char *name;
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dbus_bool_t interactive;
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if (!dbus_message_get_args(
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message,
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&error,
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DBUS_TYPE_STRING, &name,
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DBUS_TYPE_BOOLEAN, &interactive,
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DBUS_TYPE_INVALID))
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return bus_send_error_reply(connection, message, &error, -EINVAL);
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if (isempty(name))
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name = NULL;
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if (!streq_ptr(name, data[PROP_STATIC_HOSTNAME])) {
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r = verify_polkit(connection, message, "org.freedesktop.hostname1.set-static-hostname", interactive, NULL, &error);
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if (r < 0)
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return bus_send_error_reply(connection, message, &error, r);
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if (isempty(name)) {
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free(data[PROP_STATIC_HOSTNAME]);
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data[PROP_STATIC_HOSTNAME] = NULL;
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} else {
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char *h;
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if (!hostname_is_valid(name))
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return bus_send_error_reply(connection, message, NULL, -EINVAL);
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h = strdup(name);
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if (!h)
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goto oom;
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free(data[PROP_STATIC_HOSTNAME]);
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data[PROP_STATIC_HOSTNAME] = h;
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}
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r = write_data_static_hostname();
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if (r < 0) {
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log_error("Failed to write static host name: %s", strerror(-r));
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return bus_send_error_reply(connection, message, NULL, r);
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}
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log_info("Changed static host name to '%s'", strna(data[PROP_STATIC_HOSTNAME]));
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changed = bus_properties_changed_new(
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"/org/freedesktop/hostname1",
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"org.freedesktop.hostname1",
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"StaticHostname\0");
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if (!changed)
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goto oom;
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}
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} else if (dbus_message_is_method_call(message, "org.freedesktop.hostname1", "SetPrettyHostname") ||
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dbus_message_is_method_call(message, "org.freedesktop.hostname1", "SetIconName") ||
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dbus_message_is_method_call(message, "org.freedesktop.hostname1", "SetChassis")) {
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const char *name;
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dbus_bool_t interactive;
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int k;
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if (!dbus_message_get_args(
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message,
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&error,
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DBUS_TYPE_STRING, &name,
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DBUS_TYPE_BOOLEAN, &interactive,
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DBUS_TYPE_INVALID))
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return bus_send_error_reply(connection, message, &error, -EINVAL);
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if (isempty(name))
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name = NULL;
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k = streq(dbus_message_get_member(message), "SetPrettyHostname") ? PROP_PRETTY_HOSTNAME :
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streq(dbus_message_get_member(message), "SetChassis") ? PROP_CHASSIS : PROP_ICON_NAME;
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if (!streq_ptr(name, data[k])) {
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/* Since the pretty hostname should always be
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* changed at the same time as the static one,
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* use the same policy action for both... */
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r = verify_polkit(connection, message, k == PROP_PRETTY_HOSTNAME ?
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"org.freedesktop.hostname1.set-static-hostname" :
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"org.freedesktop.hostname1.set-machine-info", interactive, NULL, &error);
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if (r < 0)
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return bus_send_error_reply(connection, message, &error, r);
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if (isempty(name)) {
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free(data[k]);
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data[k] = NULL;
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} else {
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char *h;
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/* The icon name might ultimately be
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* used as file name, so better be
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* safe than sorry */
|
||||
if (k == PROP_ICON_NAME && !filename_is_safe(name))
|
||||
return bus_send_error_reply(connection, message, NULL, -EINVAL);
|
||||
if (k == PROP_PRETTY_HOSTNAME &&
|
||||
(string_has_cc(name) || chars_intersect(name, "\t")))
|
||||
return bus_send_error_reply(connection, message, NULL, -EINVAL);
|
||||
if (k == PROP_CHASSIS && !valid_chassis(name))
|
||||
return bus_send_error_reply(connection, message, NULL, -EINVAL);
|
||||
|
||||
h = strdup(name);
|
||||
if (!h)
|
||||
goto oom;
|
||||
|
||||
free(data[k]);
|
||||
data[k] = h;
|
||||
}
|
||||
|
||||
r = write_data_other();
|
||||
if (r < 0) {
|
||||
log_error("Failed to write machine info: %s", strerror(-r));
|
||||
return bus_send_error_reply(connection, message, NULL, r);
|
||||
}
|
||||
|
||||
log_info("Changed %s to '%s'",
|
||||
k == PROP_PRETTY_HOSTNAME ? "pretty host name" :
|
||||
k == PROP_CHASSIS ? "chassis" : "icon name", strna(data[k]));
|
||||
|
||||
changed = bus_properties_changed_new(
|
||||
"/org/freedesktop/hostname1",
|
||||
"org.freedesktop.hostname1",
|
||||
k == PROP_PRETTY_HOSTNAME ? "PrettyHostname\0" :
|
||||
k == PROP_CHASSIS ? "Chassis\0" : "IconName\0");
|
||||
if (!changed)
|
||||
goto oom;
|
||||
}
|
||||
|
||||
} else
|
||||
return bus_default_message_handler(connection, message, INTROSPECTION, INTERFACES_LIST, bps);
|
||||
|
||||
reply = dbus_message_new_method_return(message);
|
||||
if (!reply)
|
||||
goto oom;
|
||||
|
||||
if (!bus_maybe_send_reply(connection, message, reply))
|
||||
goto oom;
|
||||
|
||||
dbus_message_unref(reply);
|
||||
reply = NULL;
|
||||
|
||||
if (changed) {
|
||||
|
||||
if (!dbus_connection_send(connection, changed, NULL))
|
||||
goto oom;
|
||||
|
||||
dbus_message_unref(changed);
|
||||
}
|
||||
|
||||
return DBUS_HANDLER_RESULT_HANDLED;
|
||||
|
||||
oom:
|
||||
if (reply)
|
||||
dbus_message_unref(reply);
|
||||
|
||||
if (changed)
|
||||
dbus_message_unref(changed);
|
||||
|
||||
dbus_error_free(&error);
|
||||
|
||||
return DBUS_HANDLER_RESULT_NEED_MEMORY;
|
||||
return 1;
|
||||
}
|
||||
|
||||
static int connect_bus(DBusConnection **_bus) {
|
||||
static const DBusObjectPathVTable hostname_vtable = {
|
||||
.message_function = hostname_message_handler
|
||||
};
|
||||
DBusError error;
|
||||
DBusConnection *bus = NULL;
|
||||
static int property_get_chassis(
|
||||
sd_bus *bus,
|
||||
const char *path,
|
||||
const char *interface,
|
||||
const char *property,
|
||||
sd_bus_message *reply,
|
||||
sd_bus_error *error,
|
||||
void *userdata) {
|
||||
|
||||
Context *c = userdata;
|
||||
const char *name;
|
||||
int r;
|
||||
|
||||
if (isempty(c->data[PROP_CHASSIS]))
|
||||
name = fallback_chassis();
|
||||
else
|
||||
name = c->data[PROP_CHASSIS];
|
||||
|
||||
r = sd_bus_message_append(reply, "s", name);
|
||||
if (r < 0)
|
||||
return r;
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
static int method_set_hostname(sd_bus *bus, sd_bus_message *m, void *userdata) {
|
||||
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
|
||||
Context *c = userdata;
|
||||
const char *name;
|
||||
bool interactive;
|
||||
char *h;
|
||||
int r;
|
||||
|
||||
r = sd_bus_message_read(m, "sb", &name, &interactive);
|
||||
if (r < 0)
|
||||
return sd_bus_reply_method_errno(bus, m, r, NULL);
|
||||
|
||||
if (isempty(name))
|
||||
name = c->data[PROP_STATIC_HOSTNAME];
|
||||
|
||||
if (isempty(name))
|
||||
name = "localhost";
|
||||
|
||||
if (!hostname_is_valid(name))
|
||||
return sd_bus_reply_method_errorf(bus, m, SD_BUS_ERROR_INVALID_ARGS, "Invalid hostname '%s'", name);
|
||||
|
||||
if (streq_ptr(name, c->data[PROP_HOSTNAME]))
|
||||
return sd_bus_reply_method_return(bus, m, NULL);
|
||||
|
||||
r = bus_verify_polkit_async(bus, &c->polkit_registry, m, "org.freedesktop.hostname1.set-hostname", interactive, &error, method_set_hostname, c);
|
||||
if (r < 0)
|
||||
return sd_bus_reply_method_errno(bus, m, r, &error);
|
||||
if (r == 0)
|
||||
return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
|
||||
|
||||
h = strdup(name);
|
||||
if (!h)
|
||||
return log_oom();
|
||||
|
||||
free(c->data[PROP_HOSTNAME]);
|
||||
c->data[PROP_HOSTNAME] = h;
|
||||
|
||||
r = context_write_data_hostname(c);
|
||||
if (r < 0) {
|
||||
log_error("Failed to set host name: %s", strerror(-r));
|
||||
return sd_bus_reply_method_errnof(bus, m, r, "Failed to set hostname: %s", strerror(-r));
|
||||
}
|
||||
|
||||
log_info("Changed host name to '%s'", strna(c->data[PROP_HOSTNAME]));
|
||||
|
||||
sd_bus_emit_properties_changed(bus, "/org/freedesktop/hostname1", "org.freedesktop.hostname1", "Hostname", NULL);
|
||||
|
||||
return sd_bus_reply_method_return(bus, m, NULL);
|
||||
}
|
||||
|
||||
static int method_set_static_hostname(sd_bus *bus, sd_bus_message *m, void *userdata) {
|
||||
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
|
||||
Context *c = userdata;
|
||||
const char *name;
|
||||
bool interactive;
|
||||
int r;
|
||||
|
||||
r = sd_bus_message_read(m, "sb", &name, &interactive);
|
||||
if (r < 0)
|
||||
return sd_bus_reply_method_errno(bus, m, r, NULL);
|
||||
|
||||
if (isempty(name))
|
||||
name = NULL;
|
||||
|
||||
if (streq_ptr(name, c->data[PROP_STATIC_HOSTNAME]))
|
||||
return sd_bus_reply_method_return(bus, m, NULL);
|
||||
|
||||
r = bus_verify_polkit_async(bus, &c->polkit_registry, m, "org.freedesktop.hostname1.set-static-hostname", interactive, &error, method_set_static_hostname, c);
|
||||
if (r < 0)
|
||||
return sd_bus_reply_method_errno(bus, m, r, &error);
|
||||
if (r == 0)
|
||||
return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
|
||||
|
||||
if (isempty(name)) {
|
||||
free(c->data[PROP_STATIC_HOSTNAME]);
|
||||
c->data[PROP_STATIC_HOSTNAME] = NULL;
|
||||
} else {
|
||||
char *h;
|
||||
|
||||
if (!hostname_is_valid(name))
|
||||
return sd_bus_reply_method_errorf(bus, m, SD_BUS_ERROR_INVALID_ARGS, "Invalid static hostname '%s'", name);
|
||||
|
||||
h = strdup(name);
|
||||
if (!h)
|
||||
return log_oom();
|
||||
|
||||
free(c->data[PROP_STATIC_HOSTNAME]);
|
||||
c->data[PROP_STATIC_HOSTNAME] = h;
|
||||
}
|
||||
|
||||
r = context_write_data_static_hostname(c);
|
||||
if (r < 0) {
|
||||
log_error("Failed to write static host name: %s", strerror(-r));
|
||||
return sd_bus_reply_method_errnof(bus, m, r, "Failed to set static hostname: %s", strerror(-r));
|
||||
}
|
||||
|
||||
log_info("Changed static host name to '%s'", strna(c->data[PROP_STATIC_HOSTNAME]));
|
||||
|
||||
sd_bus_emit_properties_changed(bus, "/org/freedesktop/hostname1", "org.freedesktop.hostname1", "StaticHostname", NULL);
|
||||
|
||||
return sd_bus_reply_method_return(bus, m, NULL);
|
||||
}
|
||||
|
||||
static int set_machine_info(Context *c, sd_bus *bus, sd_bus_message *m, int prop, sd_bus_message_handler_t cb) {
|
||||
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
|
||||
bool interactive;
|
||||
const char *name;
|
||||
int r;
|
||||
|
||||
assert(c);
|
||||
assert(bus);
|
||||
assert(m);
|
||||
|
||||
r = sd_bus_message_read(m, "sb", &name, &interactive);
|
||||
if (r < 0)
|
||||
return sd_bus_reply_method_errno(bus, m, r, NULL);
|
||||
|
||||
if (isempty(name))
|
||||
name = NULL;
|
||||
|
||||
if (streq_ptr(name, c->data[prop]))
|
||||
return sd_bus_reply_method_return(bus, m, NULL);
|
||||
|
||||
/* 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(bus, &c->polkit_registry, m, prop == PROP_PRETTY_HOSTNAME ?
|
||||
"org.freedesktop.hostname1.set-static-hostname" :
|
||||
"org.freedesktop.hostname1.set-machine-info", interactive, &error, cb, c);
|
||||
if (r < 0)
|
||||
return sd_bus_reply_method_errno(bus, m, r, &error);
|
||||
if (r == 0)
|
||||
return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
|
||||
|
||||
if (isempty(name)) {
|
||||
free(c->data[prop]);
|
||||
c->data[prop] = NULL;
|
||||
} else {
|
||||
char *h;
|
||||
|
||||
/* The icon name might ultimately be used as file
|
||||
* name, so better be safe than sorry */
|
||||
|
||||
if (prop == PROP_ICON_NAME && !filename_is_safe(name))
|
||||
return sd_bus_reply_method_errorf(bus, m, SD_BUS_ERROR_INVALID_ARGS, "Invalid icon name '%s'", name);
|
||||
if (prop == PROP_PRETTY_HOSTNAME &&
|
||||
(string_has_cc(name) || chars_intersect(name, "\t")))
|
||||
return sd_bus_reply_method_errorf(bus, m, SD_BUS_ERROR_INVALID_ARGS, "Invalid pretty host name '%s'", name);
|
||||
if (prop == PROP_CHASSIS && !valid_chassis(name))
|
||||
return sd_bus_reply_method_errorf(bus, m, SD_BUS_ERROR_INVALID_ARGS, "Invalid chassis '%s'", name);
|
||||
|
||||
h = strdup(name);
|
||||
if (!h)
|
||||
return log_oom();
|
||||
|
||||
free(c->data[prop]);
|
||||
c->data[prop] = h;
|
||||
}
|
||||
|
||||
r = context_write_data_other(c);
|
||||
if (r < 0) {
|
||||
log_error("Failed to write machine info: %s", strerror(-r));
|
||||
return sd_bus_reply_method_errnof(bus, m, r, "Failed to write machine info: %s", strerror(-r));
|
||||
}
|
||||
|
||||
log_info("Changed %s to '%s'",
|
||||
prop == PROP_PRETTY_HOSTNAME ? "pretty host name" :
|
||||
prop == PROP_CHASSIS ? "chassis" : "icon name", strna(c->data[prop]));
|
||||
|
||||
sd_bus_emit_properties_changed(bus, "/org/freedesktop/hostname1", "org.freedesktop.hostname1",
|
||||
prop == PROP_PRETTY_HOSTNAME ? "PrettyHostname" :
|
||||
prop == PROP_CHASSIS ? "Chassis" : "IconName", NULL);
|
||||
|
||||
return sd_bus_reply_method_return(bus, m, NULL);
|
||||
}
|
||||
|
||||
static int method_set_pretty_hostname(sd_bus *bus, sd_bus_message *m, void *userdata) {
|
||||
return set_machine_info(userdata, bus, m, PROP_PRETTY_HOSTNAME, method_set_pretty_hostname);
|
||||
}
|
||||
|
||||
static int method_set_icon_name(sd_bus *bus, sd_bus_message *m, void *userdata) {
|
||||
return set_machine_info(userdata, bus, m, PROP_ICON_NAME, method_set_icon_name);
|
||||
}
|
||||
|
||||
static int method_set_chassis(sd_bus *bus, sd_bus_message *m, void *userdata) {
|
||||
return set_machine_info(userdata, bus, m, PROP_CHASSIS, method_set_chassis);
|
||||
}
|
||||
|
||||
static const sd_bus_vtable hostname_vtable[] = {
|
||||
SD_BUS_VTABLE_START(0),
|
||||
SD_BUS_PROPERTY("Hostname", "s", NULL, offsetof(Context, data) + sizeof(char*) * PROP_HOSTNAME, 0),
|
||||
SD_BUS_PROPERTY("StaticHostname", "s", NULL, offsetof(Context, data) + sizeof(char*) * PROP_STATIC_HOSTNAME, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
|
||||
SD_BUS_PROPERTY("PrettyHostname", "s", NULL, 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_METHOD("SetHostname", "sb", NULL, method_set_hostname, 0),
|
||||
SD_BUS_METHOD("SetStaticHostname", "sb", NULL, method_set_static_hostname, 0),
|
||||
SD_BUS_METHOD("SetPrettyHostname", "sb", NULL, method_set_pretty_hostname, 0),
|
||||
SD_BUS_METHOD("SetIconName", "sb", NULL, method_set_icon_name, 0),
|
||||
SD_BUS_METHOD("SetChassis", "sb", NULL, method_set_chassis, 0),
|
||||
SD_BUS_VTABLE_END,
|
||||
};
|
||||
|
||||
static int connect_bus(Context *c, sd_event *event, sd_bus **_bus) {
|
||||
_cleanup_bus_unref_ sd_bus *bus = NULL;
|
||||
int r;
|
||||
|
||||
assert(c);
|
||||
assert(event);
|
||||
assert(_bus);
|
||||
|
||||
dbus_error_init(&error);
|
||||
|
||||
bus = dbus_bus_get_private(DBUS_BUS_SYSTEM, &error);
|
||||
if (!bus) {
|
||||
log_error("Failed to get system D-Bus connection: %s", bus_error_message(&error));
|
||||
r = -ECONNREFUSED;
|
||||
goto fail;
|
||||
r = sd_bus_open_system(&bus);
|
||||
if (r < 0) {
|
||||
log_error("Failed to get system bus connection: %s", strerror(-r));
|
||||
return r;
|
||||
}
|
||||
|
||||
dbus_connection_set_exit_on_disconnect(bus, FALSE);
|
||||
|
||||
if (!dbus_connection_register_object_path(bus, "/org/freedesktop/hostname1", &hostname_vtable, NULL) ||
|
||||
!dbus_connection_add_filter(bus, bus_exit_idle_filter, &remain_until, NULL)) {
|
||||
r = log_oom();
|
||||
goto fail;
|
||||
r = sd_bus_add_object_vtable(bus, "/org/freedesktop/hostname1", "org.freedesktop.hostname1", hostname_vtable, c);
|
||||
if (r < 0) {
|
||||
log_error("Failed to register object: %s", strerror(-r));
|
||||
return r;
|
||||
}
|
||||
|
||||
r = dbus_bus_request_name(bus, "org.freedesktop.hostname1", DBUS_NAME_FLAG_DO_NOT_QUEUE, &error);
|
||||
if (dbus_error_is_set(&error)) {
|
||||
log_error("Failed to register name on bus: %s", bus_error_message(&error));
|
||||
r = -EEXIST;
|
||||
goto fail;
|
||||
r = sd_bus_request_name(bus, "org.freedesktop.hostname1", SD_BUS_NAME_DO_NOT_QUEUE);
|
||||
if (r < 0) {
|
||||
log_error("Failed to register name: %s", strerror(-r));
|
||||
return r;
|
||||
}
|
||||
|
||||
if (r != DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER) {
|
||||
if (r != SD_BUS_NAME_PRIMARY_OWNER) {
|
||||
log_error("Failed to acquire name.");
|
||||
r = -EEXIST;
|
||||
goto fail;
|
||||
return -EEXIST;
|
||||
}
|
||||
|
||||
if (_bus)
|
||||
*_bus = bus;
|
||||
r = sd_bus_attach_event(bus, event, 0);
|
||||
if (r < 0) {
|
||||
log_error("Failed to attach bus to event loop: %s", strerror(-r));
|
||||
return r;
|
||||
}
|
||||
|
||||
*_bus = bus;
|
||||
bus = NULL;
|
||||
|
||||
return 0;
|
||||
|
||||
fail:
|
||||
dbus_connection_close(bus);
|
||||
dbus_connection_unref(bus);
|
||||
|
||||
dbus_error_free(&error);
|
||||
|
||||
return r;
|
||||
}
|
||||
|
||||
int main(int argc, char *argv[]) {
|
||||
Context context = {};
|
||||
|
||||
_cleanup_event_unref_ sd_event *event = NULL;
|
||||
_cleanup_bus_unref_ sd_bus *bus = NULL;
|
||||
int r;
|
||||
DBusConnection *bus = NULL;
|
||||
bool exiting = false;
|
||||
|
||||
log_set_target(LOG_TARGET_AUTO);
|
||||
log_parse_environment();
|
||||
@ -687,14 +628,6 @@ int main(int argc, char *argv[]) {
|
||||
umask(0022);
|
||||
label_init("/etc");
|
||||
|
||||
if (argc == 2 && streq(argv[1], "--introspect")) {
|
||||
fputs(DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE
|
||||
"<node>\n", stdout);
|
||||
fputs(hostname_interface, stdout);
|
||||
fputs("</node>\n", stdout);
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (argc != 1) {
|
||||
log_error("This program takes no arguments.");
|
||||
r = -EINVAL;
|
||||
@ -704,38 +637,39 @@ int main(int argc, char *argv[]) {
|
||||
if (!check_nss())
|
||||
log_warning("Warning: nss-myhostname is not installed. Changing the local hostname might make it unresolveable. Please install nss-myhostname!");
|
||||
|
||||
r = read_data();
|
||||
if (r < 0) {
|
||||
log_error("Failed to read hostname data: %s", strerror(-r));
|
||||
if (argc != 1) {
|
||||
log_error("This program takes no arguments.");
|
||||
r = -EINVAL;
|
||||
goto finish;
|
||||
}
|
||||
|
||||
r = connect_bus(&bus);
|
||||
r = sd_event_new(&event);
|
||||
if (r < 0) {
|
||||
log_error("Failed to allocate event loop: %s", strerror(-r));
|
||||
goto finish;
|
||||
}
|
||||
|
||||
r = connect_bus(&context, event, &bus);
|
||||
if (r < 0)
|
||||
goto finish;
|
||||
|
||||
remain_until = now(CLOCK_MONOTONIC) + DEFAULT_EXIT_USEC;
|
||||
for (;;) {
|
||||
|
||||
if (!dbus_connection_read_write_dispatch(bus, exiting ? -1 : (int) (DEFAULT_EXIT_USEC/USEC_PER_MSEC)))
|
||||
break;
|
||||
|
||||
if (!exiting && remain_until < now(CLOCK_MONOTONIC)) {
|
||||
exiting = true;
|
||||
bus_async_unregister_and_exit(bus, "org.freedesktop.hostname1");
|
||||
}
|
||||
r = context_read_data(&context);
|
||||
if (r < 0) {
|
||||
log_error("Failed to read timezone data: %s", strerror(-r));
|
||||
goto finish;
|
||||
}
|
||||
|
||||
r = bus_event_loop_with_idle(event, bus, "org.freedesktop.hostname1", DEFAULT_EXIT_USEC);
|
||||
if (r < 0) {
|
||||
log_error("Failed to run event loop: %s", strerror(-r));
|
||||
goto finish;
|
||||
}
|
||||
|
||||
sd_bus_flush(bus);
|
||||
r = 0;
|
||||
|
||||
finish:
|
||||
free_data();
|
||||
|
||||
if (bus) {
|
||||
dbus_connection_flush(bus);
|
||||
dbus_connection_close(bus);
|
||||
dbus_connection_unref(bus);
|
||||
}
|
||||
context_free(&context, bus);
|
||||
|
||||
return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user