2012-10-17 21:23:30 +02:00
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/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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/***
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This file is part of systemd.
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Copyright 2012 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <stdlib.h>
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#include <stdbool.h>
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#include <unistd.h>
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#include <getopt.h>
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2012-11-12 20:16:07 +01:00
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#include <locale.h>
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2012-10-17 21:23:30 +02:00
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#include <string.h>
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#include <sys/timex.h>
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2012-10-21 03:35:33 +02:00
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#include <sys/utsname.h>
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2012-10-17 21:23:30 +02:00
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#include "dbus-common.h"
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#include "util.h"
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#include "spawn-polkit-agent.h"
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#include "build.h"
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#include "hwclock.h"
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#include "strv.h"
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#include "sd-id128.h"
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#include "virt.h"
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static enum transport {
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TRANSPORT_NORMAL,
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TRANSPORT_SSH,
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TRANSPORT_POLKIT
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} arg_transport = TRANSPORT_NORMAL;
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static bool arg_ask_password = true;
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static const char *arg_host = NULL;
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static bool arg_set_transient = false;
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static bool arg_set_pretty = false;
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static bool arg_set_static = false;
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static void polkit_agent_open_if_enabled(void) {
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/* Open the polkit agent as a child process if necessary */
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if (!arg_ask_password)
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return;
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polkit_agent_open();
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}
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typedef struct StatusInfo {
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const char *hostname;
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const char *static_hostname;
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const char *pretty_hostname;
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const char *icon_name;
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} StatusInfo;
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static void print_status_info(StatusInfo *i) {
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sd_id128_t mid, bid;
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int r;
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2012-10-21 03:35:33 +02:00
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const char *id = NULL;
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_cleanup_free_ char *pretty_name = NULL, *cpe_name = NULL;
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struct utsname u;
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2012-10-17 21:23:30 +02:00
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assert(i);
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printf(" Static hostname: %s\n",
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strna(i->static_hostname));
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if (!streq_ptr(i->hostname, i->static_hostname))
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printf("Transient hostname: %s\n",
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strna(i->hostname));
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printf(" Pretty hostname: %s\n"
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" Icon name: %s\n",
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strna(i->pretty_hostname),
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strna(i->icon_name));
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r = sd_id128_get_machine(&mid);
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if (r >= 0)
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printf(" Machine ID: " SD_ID128_FORMAT_STR "\n", SD_ID128_FORMAT_VAL(mid));
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r = sd_id128_get_boot(&bid);
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if (r >= 0)
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printf(" Boot ID: " SD_ID128_FORMAT_STR "\n", SD_ID128_FORMAT_VAL(bid));
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2012-10-21 03:35:33 +02:00
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if (detect_virtualization(&id) > 0)
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2012-10-17 21:23:30 +02:00
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printf(" Virtualization: %s\n", id);
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2012-10-21 03:35:33 +02:00
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r = parse_env_file("/etc/os-release", NEWLINE,
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"PRETTY_NAME", &pretty_name,
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"CPE_NAME", &cpe_name,
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NULL);
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if (!isempty(pretty_name))
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printf(" Operating System: %s\n", pretty_name);
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if (!isempty(cpe_name))
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printf(" CPE OS Name: %s\n", cpe_name);
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assert_se(uname(&u) >= 0);
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printf(" Kernel: %s %s\n"
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" Architecture: %s\n", u.sysname, u.release, u.machine);
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2012-10-17 21:23:30 +02:00
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}
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static int status_property(const char *name, DBusMessageIter *iter, StatusInfo *i) {
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assert(name);
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assert(iter);
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switch (dbus_message_iter_get_arg_type(iter)) {
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case DBUS_TYPE_STRING: {
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const char *s;
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dbus_message_iter_get_basic(iter, &s);
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if (!isempty(s)) {
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if (streq(name, "Hostname"))
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i->hostname = s;
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if (streq(name, "StaticHostname"))
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i->static_hostname = s;
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if (streq(name, "PrettyHostname"))
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i->pretty_hostname = s;
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if (streq(name, "IconName"))
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i->icon_name = s;
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}
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break;
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}
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}
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return 0;
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}
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static int show_status(DBusConnection *bus, char **args, unsigned n) {
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_cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
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const char *interface = "";
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int r;
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DBusMessageIter iter, sub, sub2, sub3;
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StatusInfo info;
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assert(args);
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r = bus_method_call_with_reply(
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bus,
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"org.freedesktop.hostname1",
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"/org/freedesktop/hostname1",
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"org.freedesktop.DBus.Properties",
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"GetAll",
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&reply,
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NULL,
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DBUS_TYPE_STRING, &interface,
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DBUS_TYPE_INVALID);
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if (r < 0)
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return r;
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if (!dbus_message_iter_init(reply, &iter) ||
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dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
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dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_DICT_ENTRY) {
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log_error("Failed to parse reply.");
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return -EIO;
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}
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zero(info);
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dbus_message_iter_recurse(&iter, &sub);
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while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
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const char *name;
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if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_DICT_ENTRY) {
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log_error("Failed to parse reply.");
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return -EIO;
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}
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dbus_message_iter_recurse(&sub, &sub2);
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if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &name, true) < 0) {
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log_error("Failed to parse reply.");
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return -EIO;
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}
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if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_VARIANT) {
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log_error("Failed to parse reply.");
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return -EIO;
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}
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dbus_message_iter_recurse(&sub2, &sub3);
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r = status_property(name, &sub3, &info);
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if (r < 0) {
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log_error("Failed to parse reply.");
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return r;
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}
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dbus_message_iter_next(&sub);
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}
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print_status_info(&info);
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return 0;
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}
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static char* hostname_simplify(char *s) {
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char *p, *d;
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for (p = s, d = s; *p; p++) {
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if ((*p >= 'a' && *p <= 'z') ||
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(*p >= '0' && *p <= '9') ||
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*p == '-' || *p == '_')
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*(d++) = *p;
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else if (*p >= 'A' && *p <= 'Z')
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*(d++) = *p - 'A' + 'a';
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else if (*p == ' ')
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*(d++) = '-';
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}
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*d = 0;
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strshorten(s, HOST_NAME_MAX);
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return s;
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}
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static int set_hostname(DBusConnection *bus, char **args, unsigned n) {
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_cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
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dbus_bool_t interactive = true;
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_cleanup_free_ char *h = NULL;
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const char *hostname = args[1];
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int r;
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assert(args);
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assert(n == 2);
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polkit_agent_open_if_enabled();
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if (arg_set_pretty) {
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r = bus_method_call_with_reply(
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bus,
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"org.freedesktop.hostname1",
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"/org/freedesktop/hostname1",
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"org.freedesktop.hostname1",
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"SetPrettyHostname",
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&reply,
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NULL,
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DBUS_TYPE_STRING, &hostname,
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DBUS_TYPE_BOOLEAN, &interactive,
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DBUS_TYPE_INVALID);
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if (r < 0)
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return r;
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h = strdup(hostname);
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if (!h)
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return log_oom();
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hostname = hostname_simplify(h);
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}
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if (arg_set_static) {
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r = bus_method_call_with_reply(
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bus,
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"org.freedesktop.hostname1",
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"/org/freedesktop/hostname1",
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"org.freedesktop.hostname1",
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"SetStaticHostname",
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&reply,
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NULL,
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DBUS_TYPE_STRING, &hostname,
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DBUS_TYPE_BOOLEAN, &interactive,
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DBUS_TYPE_INVALID);
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if (r < 0)
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return r;
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}
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if (arg_set_transient) {
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r = bus_method_call_with_reply(
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bus,
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"org.freedesktop.hostname1",
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"/org/freedesktop/hostname1",
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"org.freedesktop.hostname1",
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"SetHostname",
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&reply,
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NULL,
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DBUS_TYPE_STRING, &hostname,
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DBUS_TYPE_BOOLEAN, &interactive,
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DBUS_TYPE_INVALID);
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if (r < 0)
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return r;
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}
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return 0;
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}
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static int set_icon_name(DBusConnection *bus, char **args, unsigned n) {
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_cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
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dbus_bool_t interactive = true;
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assert(args);
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assert(n == 2);
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polkit_agent_open_if_enabled();
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return bus_method_call_with_reply(
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bus,
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"org.freedesktop.hostname1",
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"/org/freedesktop/hostname1",
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"org.freedesktop.hostname1",
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"SetIconName",
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&reply,
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NULL,
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DBUS_TYPE_STRING, &args[1],
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DBUS_TYPE_BOOLEAN, &interactive,
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DBUS_TYPE_INVALID);
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}
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static int help(void) {
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2012-10-19 04:51:53 +02:00
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printf("%s [OPTIONS...] COMMAND ...\n\n"
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"Query or change system hostname.\n\n"
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2012-10-17 21:23:30 +02:00
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" -h --help Show this help\n"
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" --version Show package version\n"
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" --transient Only set transient hostname\n"
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" --static Only set static hostname\n"
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" --pretty Only set pretty hostname\n"
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2012-10-19 04:51:53 +02:00
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" --no-ask-password Do not prompt for password\n"
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2012-10-17 21:23:30 +02:00
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" -H --host=[USER@]HOST Operate on remote host\n\n"
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"Commands:\n"
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2012-10-19 04:51:53 +02:00
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" status Show current hostname settings\n"
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" set-hostname NAME Set system hostname\n"
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" set-icon-name NAME Set icon name for host\n",
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2012-10-17 21:23:30 +02:00
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program_invocation_short_name);
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return 0;
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}
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static int parse_argv(int argc, char *argv[]) {
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enum {
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ARG_VERSION = 0x100,
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ARG_NO_ASK_PASSWORD,
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ARG_SET_TRANSIENT,
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ARG_SET_STATIC,
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ARG_SET_PRETTY
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};
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static const struct option options[] = {
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{ "help", no_argument, NULL, 'h' },
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{ "version", no_argument, NULL, ARG_VERSION },
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{ "transient", no_argument, NULL, ARG_SET_TRANSIENT },
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{ "static", no_argument, NULL, ARG_SET_STATIC },
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{ "pretty", no_argument, NULL, ARG_SET_PRETTY },
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{ "host", required_argument, NULL, 'H' },
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{ "privileged", no_argument, NULL, 'P' },
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{ "no-ask-password", no_argument, NULL, ARG_NO_ASK_PASSWORD },
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{ NULL, 0, NULL, 0 }
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};
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int c;
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assert(argc >= 0);
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assert(argv);
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2012-10-19 04:51:53 +02:00
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while ((c = getopt_long(argc, argv, "hH:P", options, NULL)) >= 0) {
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2012-10-17 21:23:30 +02:00
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switch (c) {
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|
|
|
|
|
|
case 'h':
|
|
|
|
help();
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
case ARG_VERSION:
|
|
|
|
puts(PACKAGE_STRING);
|
|
|
|
puts(DISTRIBUTION);
|
|
|
|
puts(SYSTEMD_FEATURES);
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
case 'P':
|
|
|
|
arg_transport = TRANSPORT_POLKIT;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case 'H':
|
|
|
|
arg_transport = TRANSPORT_SSH;
|
|
|
|
arg_host = optarg;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case ARG_SET_TRANSIENT:
|
|
|
|
arg_set_transient = true;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case ARG_SET_PRETTY:
|
|
|
|
arg_set_pretty = true;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case ARG_SET_STATIC:
|
|
|
|
arg_set_static = true;
|
|
|
|
break;
|
|
|
|
|
2012-11-15 22:47:04 +01:00
|
|
|
case ARG_NO_ASK_PASSWORD:
|
|
|
|
arg_ask_password = false;
|
|
|
|
break;
|
|
|
|
|
2012-10-17 21:23:30 +02:00
|
|
|
case '?':
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
default:
|
|
|
|
log_error("Unknown option code %c", c);
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!arg_set_transient && !arg_set_pretty && !arg_set_static)
|
|
|
|
arg_set_transient = arg_set_pretty = arg_set_static = true;
|
|
|
|
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int hostnamectl_main(DBusConnection *bus, int argc, char *argv[], DBusError *error) {
|
|
|
|
|
|
|
|
static const struct {
|
|
|
|
const char* verb;
|
|
|
|
const enum {
|
|
|
|
MORE,
|
|
|
|
LESS,
|
|
|
|
EQUAL
|
|
|
|
} argc_cmp;
|
|
|
|
const int argc;
|
|
|
|
int (* const dispatch)(DBusConnection *bus, char **args, unsigned n);
|
|
|
|
} verbs[] = {
|
|
|
|
{ "status", LESS, 1, show_status },
|
2012-10-29 20:54:26 +01:00
|
|
|
{ "set-hostname", EQUAL, 2, set_hostname },
|
2012-10-17 21:23:30 +02:00
|
|
|
{ "set-icon-name", EQUAL, 2, set_icon_name },
|
|
|
|
};
|
|
|
|
|
|
|
|
int left;
|
|
|
|
unsigned i;
|
|
|
|
|
|
|
|
assert(argc >= 0);
|
|
|
|
assert(argv);
|
|
|
|
assert(error);
|
|
|
|
|
|
|
|
left = argc - optind;
|
|
|
|
|
|
|
|
if (left <= 0)
|
|
|
|
/* Special rule: no arguments means "status" */
|
|
|
|
i = 0;
|
|
|
|
else {
|
|
|
|
if (streq(argv[optind], "help")) {
|
|
|
|
help();
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
for (i = 0; i < ELEMENTSOF(verbs); i++)
|
|
|
|
if (streq(argv[optind], verbs[i].verb))
|
|
|
|
break;
|
|
|
|
|
|
|
|
if (i >= ELEMENTSOF(verbs)) {
|
|
|
|
log_error("Unknown operation %s", argv[optind]);
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
switch (verbs[i].argc_cmp) {
|
|
|
|
|
|
|
|
case EQUAL:
|
|
|
|
if (left != verbs[i].argc) {
|
|
|
|
log_error("Invalid number of arguments.");
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
case MORE:
|
|
|
|
if (left < verbs[i].argc) {
|
|
|
|
log_error("Too few arguments.");
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
case LESS:
|
|
|
|
if (left > verbs[i].argc) {
|
|
|
|
log_error("Too many arguments.");
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
assert_not_reached("Unknown comparison operator.");
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!bus) {
|
|
|
|
log_error("Failed to get D-Bus connection: %s", error->message);
|
|
|
|
return -EIO;
|
|
|
|
}
|
|
|
|
|
|
|
|
return verbs[i].dispatch(bus, argv + optind, left);
|
|
|
|
}
|
|
|
|
|
|
|
|
int main(int argc, char *argv[]) {
|
|
|
|
int r, retval = EXIT_FAILURE;
|
|
|
|
DBusConnection *bus = NULL;
|
|
|
|
DBusError error;
|
|
|
|
|
|
|
|
dbus_error_init(&error);
|
|
|
|
|
2012-11-12 20:16:07 +01:00
|
|
|
setlocale(LC_ALL, "");
|
2012-10-17 21:23:30 +02:00
|
|
|
log_parse_environment();
|
|
|
|
log_open();
|
|
|
|
|
|
|
|
r = parse_argv(argc, argv);
|
|
|
|
if (r < 0)
|
|
|
|
goto finish;
|
|
|
|
else if (r == 0) {
|
|
|
|
retval = EXIT_SUCCESS;
|
|
|
|
goto finish;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (arg_transport == TRANSPORT_NORMAL)
|
|
|
|
bus = dbus_bus_get_private(DBUS_BUS_SYSTEM, &error);
|
|
|
|
else if (arg_transport == TRANSPORT_POLKIT)
|
|
|
|
bus_connect_system_polkit(&bus, &error);
|
|
|
|
else if (arg_transport == TRANSPORT_SSH)
|
|
|
|
bus_connect_system_ssh(NULL, arg_host, &bus, &error);
|
|
|
|
else
|
|
|
|
assert_not_reached("Uh, invalid transport...");
|
|
|
|
|
|
|
|
r = hostnamectl_main(bus, argc, argv, &error);
|
|
|
|
retval = r < 0 ? EXIT_FAILURE : r;
|
|
|
|
|
|
|
|
finish:
|
|
|
|
if (bus) {
|
|
|
|
dbus_connection_flush(bus);
|
|
|
|
dbus_connection_close(bus);
|
|
|
|
dbus_connection_unref(bus);
|
|
|
|
}
|
|
|
|
|
|
|
|
dbus_error_free(&error);
|
|
|
|
dbus_shutdown();
|
|
|
|
|
|
|
|
return retval;
|
|
|
|
}
|