diff options
Diffstat (limited to 'src/grp-hostname')
| -rw-r--r-- | src/grp-hostname/Makefile | 29 | ||||
| -rw-r--r-- | src/grp-hostname/hostnamectl/Makefile | 44 | ||||
| -rw-r--r-- | src/grp-hostname/hostnamectl/hostnamectl.c | 529 | ||||
| -rw-r--r-- | src/grp-hostname/hostnamectl/hostnamectl.completion.bash | 64 | ||||
| -rw-r--r-- | src/grp-hostname/hostnamectl/hostnamectl.completion.zsh | 80 | ||||
| -rw-r--r-- | src/grp-hostname/hostnamectl/hostnamectl.xml | 260 | ||||
| -rw-r--r-- | src/grp-hostname/systemd-hostnamed/.gitignore | 1 | ||||
| -rw-r--r-- | src/grp-hostname/systemd-hostnamed/Makefile | 64 | ||||
| -rw-r--r-- | src/grp-hostname/systemd-hostnamed/hostnamed.c | 743 | ||||
| -rw-r--r-- | src/grp-hostname/systemd-hostnamed/org.freedesktop.hostname1.conf | 27 | ||||
| -rw-r--r-- | src/grp-hostname/systemd-hostnamed/org.freedesktop.hostname1.policy.in | 50 | ||||
| -rw-r--r-- | src/grp-hostname/systemd-hostnamed/org.freedesktop.hostname1.service | 12 | ||||
| -rw-r--r-- | src/grp-hostname/systemd-hostnamed/systemd-hostnamed.service.in | 24 | ||||
| -rw-r--r-- | src/grp-hostname/systemd-hostnamed/systemd-hostnamed.service.xml | 85 |
14 files changed, 2012 insertions, 0 deletions
diff --git a/src/grp-hostname/Makefile b/src/grp-hostname/Makefile new file mode 100644 index 0000000000..939c268c10 --- /dev/null +++ b/src/grp-hostname/Makefile @@ -0,0 +1,29 @@ +# -*- Mode: makefile; indent-tabs-mode: t -*- +# +# This file is part of systemd. +# +# Copyright 2010-2012 Lennart Poettering +# Copyright 2010-2012 Kay Sievers +# Copyright 2013 Zbigniew Jędrzejewski-Szmek +# Copyright 2013 David Strauss +# Copyright 2016 Luke Shumaker +# +# systemd is free software; you can redistribute it and/or modify it +# under the terms of the GNU Lesser General Public License as published by +# the Free Software Foundation; either version 2.1 of the License, or +# (at your option) any later version. +# +# systemd is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# Lesser General Public License for more details. +# +# You should have received a copy of the GNU Lesser General Public License +# along with systemd; If not, see <http://www.gnu.org/licenses/>. +include $(dir $(lastword $(MAKEFILE_LIST)))/../../config.mk +include $(topsrcdir)/build-aux/Makefile.head.mk + +nested.subdirs += hostnamectl +nested.subdirs += systemd-hostnamed + +include $(topsrcdir)/build-aux/Makefile.tail.mk diff --git a/src/grp-hostname/hostnamectl/Makefile b/src/grp-hostname/hostnamectl/Makefile new file mode 100644 index 0000000000..c728acce7b --- /dev/null +++ b/src/grp-hostname/hostnamectl/Makefile @@ -0,0 +1,44 @@ +# -*- Mode: makefile; indent-tabs-mode: t -*- +# +# This file is part of systemd. +# +# Copyright 2010-2012 Lennart Poettering +# Copyright 2010-2012 Kay Sievers +# Copyright 2013 Zbigniew Jędrzejewski-Szmek +# Copyright 2013 David Strauss +# Copyright 2016 Luke Shumaker +# +# systemd is free software; you can redistribute it and/or modify it +# under the terms of the GNU Lesser General Public License as published by +# the Free Software Foundation; either version 2.1 of the License, or +# (at your option) any later version. +# +# systemd is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# Lesser General Public License for more details. +# +# You should have received a copy of the GNU Lesser General Public License +# along with systemd; If not, see <http://www.gnu.org/licenses/>. +include $(dir $(lastword $(MAKEFILE_LIST)))/../../../config.mk +include $(topsrcdir)/build-aux/Makefile.head.mk + +ifneq ($(ENABLE_HOSTNAMED),) + +hostnamectl_SOURCES = \ + src/hostname/hostnamectl.c + +hostnamectl_LDADD = \ + libsystemd-shared.la + +bin_PROGRAMS += \ + hostnamectl + +dist_bashcompletion_data += \ + shell-completion/bash/hostnamectl + +dist_zshcompletion_data += \ + shell-completion/zsh/_hostnamectl +endif # ENABLE_HOSTNAMED + +include $(topsrcdir)/build-aux/Makefile.tail.mk diff --git a/src/grp-hostname/hostnamectl/hostnamectl.c b/src/grp-hostname/hostnamectl/hostnamectl.c new file mode 100644 index 0000000000..8a24813934 --- /dev/null +++ b/src/grp-hostname/hostnamectl/hostnamectl.c @@ -0,0 +1,529 @@ +/*** + This file is part of systemd. + + Copyright 2012 Lennart Poettering + + systemd is free software; you can redistribute it and/or modify it + under the terms of the GNU Lesser General Public License as published by + the Free Software Foundation; either version 2.1 of the License, or + (at your option) any later version. + + systemd is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with systemd; If not, see <http://www.gnu.org/licenses/>. +***/ + +#include <getopt.h> +#include <locale.h> +#include <stdbool.h> +#include <stdlib.h> +#include <string.h> + +#include <systemd/sd-bus.h> +#include <systemd/sd-id128.h> + +#include "basic/alloc-util.h" +#include "basic/architecture.h" +#include "basic/hostname-util.h" +#include "basic/util.h" +#include "sd-bus/bus-error.h" +#include "shared/bus-util.h" +#include "shared/spawn-polkit-agent.h" + +static bool arg_ask_password = true; +static BusTransport arg_transport = BUS_TRANSPORT_LOCAL; +static char *arg_host = NULL; +static bool arg_transient = false; +static bool arg_pretty = false; +static bool arg_static = false; + +static void polkit_agent_open_if_enabled(void) { + + /* Open the polkit agent as a child process if necessary */ + if (!arg_ask_password) + return; + + if (arg_transport != BUS_TRANSPORT_LOCAL) + return; + + polkit_agent_open(); +} + +typedef struct StatusInfo { + char *hostname; + char *static_hostname; + char *pretty_hostname; + char *icon_name; + char *chassis; + char *deployment; + char *location; + char *kernel_name; + char *kernel_release; + char *os_pretty_name; + char *os_cpe_name; + char *virtualization; + char *architecture; +} StatusInfo; + +static void print_status_info(StatusInfo *i) { + sd_id128_t mid = {}, bid = {}; + int r; + + assert(i); + + printf(" Static hostname: %s\n", strna(i->static_hostname)); + + if (!isempty(i->pretty_hostname) && + !streq_ptr(i->pretty_hostname, i->static_hostname)) + printf(" Pretty hostname: %s\n", i->pretty_hostname); + + if (!isempty(i->hostname) && + !streq_ptr(i->hostname, i->static_hostname)) + printf("Transient hostname: %s\n", i->hostname); + + if (!isempty(i->icon_name)) + printf(" Icon name: %s\n", + strna(i->icon_name)); + + if (!isempty(i->chassis)) + printf(" Chassis: %s\n", + strna(i->chassis)); + + if (!isempty(i->deployment)) + printf(" Deployment: %s\n", i->deployment); + + if (!isempty(i->location)) + printf(" Location: %s\n", i->location); + + r = sd_id128_get_machine(&mid); + if (r >= 0) + printf(" Machine ID: " SD_ID128_FORMAT_STR "\n", SD_ID128_FORMAT_VAL(mid)); + + r = sd_id128_get_boot(&bid); + if (r >= 0) + printf(" Boot ID: " SD_ID128_FORMAT_STR "\n", SD_ID128_FORMAT_VAL(bid)); + + if (!isempty(i->virtualization)) + printf(" Virtualization: %s\n", i->virtualization); + + if (!isempty(i->os_pretty_name)) + printf(" Operating System: %s\n", i->os_pretty_name); + + if (!isempty(i->os_cpe_name)) + printf(" CPE OS Name: %s\n", i->os_cpe_name); + + if (!isempty(i->kernel_name) && !isempty(i->kernel_release)) + printf(" Kernel: %s %s\n", i->kernel_name, i->kernel_release); + + if (!isempty(i->architecture)) + printf(" Architecture: %s\n", i->architecture); + +} + +static int show_one_name(sd_bus *bus, const char* attr) { + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + const char *s; + int r; + + r = sd_bus_get_property( + bus, + "org.freedesktop.hostname1", + "/org/freedesktop/hostname1", + "org.freedesktop.hostname1", + attr, + &error, &reply, "s"); + if (r < 0) { + log_error("Could not get property: %s", bus_error_message(&error, -r)); + return r; + } + + r = sd_bus_message_read(reply, "s", &s); + if (r < 0) + return bus_log_parse_error(r); + + printf("%s\n", s); + + return 0; +} + +static int show_all_names(sd_bus *bus) { + StatusInfo info = {}; + + static const struct bus_properties_map hostname_map[] = { + { "Hostname", "s", NULL, offsetof(StatusInfo, hostname) }, + { "StaticHostname", "s", NULL, offsetof(StatusInfo, static_hostname) }, + { "PrettyHostname", "s", NULL, offsetof(StatusInfo, pretty_hostname) }, + { "IconName", "s", NULL, offsetof(StatusInfo, icon_name) }, + { "Chassis", "s", NULL, offsetof(StatusInfo, chassis) }, + { "Deployment", "s", NULL, offsetof(StatusInfo, deployment) }, + { "Location", "s", NULL, offsetof(StatusInfo, location) }, + { "KernelName", "s", NULL, offsetof(StatusInfo, kernel_name) }, + { "KernelRelease", "s", NULL, offsetof(StatusInfo, kernel_release) }, + { "OperatingSystemPrettyName", "s", NULL, offsetof(StatusInfo, os_pretty_name) }, + { "OperatingSystemCPEName", "s", NULL, offsetof(StatusInfo, os_cpe_name) }, + {} + }; + + static const struct bus_properties_map manager_map[] = { + { "Virtualization", "s", NULL, offsetof(StatusInfo, virtualization) }, + { "Architecture", "s", NULL, offsetof(StatusInfo, architecture) }, + {} + }; + + int r; + + r = bus_map_all_properties(bus, + "org.freedesktop.hostname1", + "/org/freedesktop/hostname1", + hostname_map, + &info); + if (r < 0) + goto fail; + + bus_map_all_properties(bus, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + manager_map, + &info); + + print_status_info(&info); + +fail: + free(info.hostname); + free(info.static_hostname); + free(info.pretty_hostname); + free(info.icon_name); + free(info.chassis); + free(info.deployment); + free(info.location); + free(info.kernel_name); + free(info.kernel_release); + free(info.os_pretty_name); + free(info.os_cpe_name); + free(info.virtualization); + free(info.architecture); + + return r; +} + +static int show_status(sd_bus *bus, char **args, unsigned n) { + assert(args); + + if (arg_pretty || arg_static || arg_transient) { + const char *attr; + + if (!!arg_static + !!arg_pretty + !!arg_transient > 1) { + log_error("Cannot query more than one name type at a time"); + return -EINVAL; + } + + attr = arg_pretty ? "PrettyHostname" : + arg_static ? "StaticHostname" : "Hostname"; + + return show_one_name(bus, attr); + } else + return show_all_names(bus); +} + +static int set_simple_string(sd_bus *bus, const char *method, const char *value) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + int r = 0; + + polkit_agent_open_if_enabled(); + + r = sd_bus_call_method( + bus, + "org.freedesktop.hostname1", + "/org/freedesktop/hostname1", + "org.freedesktop.hostname1", + method, + &error, NULL, + "sb", value, arg_ask_password); + if (r < 0) + log_error("Could not set property: %s", bus_error_message(&error, -r)); + return r; +} + +static int set_hostname(sd_bus *bus, char **args, unsigned n) { + _cleanup_free_ char *h = NULL; + char *hostname = args[1]; + int r; + + assert(args); + assert(n == 2); + + if (!arg_pretty && !arg_static && !arg_transient) + arg_pretty = arg_static = arg_transient = true; + + if (arg_pretty) { + const char *p; + + /* If the passed hostname is already valid, then + * assume the user doesn't know anything about pretty + * hostnames, so let's unset the pretty hostname, and + * just set the passed hostname as static/dynamic + * hostname. */ + + if (arg_static && hostname_is_valid(hostname, true)) { + p = ""; + /* maybe get rid of trailing dot */ + hostname = hostname_cleanup(hostname); + } else { + p = h = strdup(hostname); + if (!p) + return log_oom(); + + hostname_cleanup(hostname); + } + + r = set_simple_string(bus, "SetPrettyHostname", p); + if (r < 0) + return r; + } + + if (arg_static) { + r = set_simple_string(bus, "SetStaticHostname", hostname); + if (r < 0) + return r; + } + + if (arg_transient) { + r = set_simple_string(bus, "SetHostname", hostname); + if (r < 0) + return r; + } + + return 0; +} + +static int set_icon_name(sd_bus *bus, char **args, unsigned n) { + assert(args); + assert(n == 2); + + return set_simple_string(bus, "SetIconName", args[1]); +} + +static int set_chassis(sd_bus *bus, char **args, unsigned n) { + assert(args); + assert(n == 2); + + return set_simple_string(bus, "SetChassis", args[1]); +} + +static int set_deployment(sd_bus *bus, char **args, unsigned n) { + assert(args); + assert(n == 2); + + return set_simple_string(bus, "SetDeployment", args[1]); +} + +static int set_location(sd_bus *bus, char **args, unsigned n) { + assert(args); + assert(n == 2); + + return set_simple_string(bus, "SetLocation", args[1]); +} + +static void help(void) { + printf("%s [OPTIONS...] COMMAND ...\n\n" + "Query or change system hostname.\n\n" + " -h --help Show this help\n" + " --version Show package version\n" + " --no-ask-password Do not prompt for password\n" + " -H --host=[USER@]HOST Operate on remote host\n" + " -M --machine=CONTAINER Operate on local container\n" + " --transient Only set transient hostname\n" + " --static Only set static hostname\n" + " --pretty Only set pretty hostname\n\n" + "Commands:\n" + " status Show current hostname settings\n" + " set-hostname NAME Set system hostname\n" + " set-icon-name NAME Set icon name for host\n" + " set-chassis NAME Set chassis type for host\n" + " set-deployment NAME Set deployment environment for host\n" + " set-location NAME Set location for host\n" + , program_invocation_short_name); +} + +static int parse_argv(int argc, char *argv[]) { + + enum { + ARG_VERSION = 0x100, + ARG_NO_ASK_PASSWORD, + ARG_TRANSIENT, + ARG_STATIC, + ARG_PRETTY + }; + + static const struct option options[] = { + { "help", no_argument, NULL, 'h' }, + { "version", no_argument, NULL, ARG_VERSION }, + { "transient", no_argument, NULL, ARG_TRANSIENT }, + { "static", no_argument, NULL, ARG_STATIC }, + { "pretty", no_argument, NULL, ARG_PRETTY }, + { "host", required_argument, NULL, 'H' }, + { "machine", required_argument, NULL, 'M' }, + { "no-ask-password", no_argument, NULL, ARG_NO_ASK_PASSWORD }, + {} + }; + + int c; + + assert(argc >= 0); + assert(argv); + + while ((c = getopt_long(argc, argv, "hH:M:", options, NULL)) >= 0) + + switch (c) { + + case 'h': + help(); + return 0; + + case ARG_VERSION: + return version(); + + case 'H': + arg_transport = BUS_TRANSPORT_REMOTE; + arg_host = optarg; + break; + + case 'M': + arg_transport = BUS_TRANSPORT_MACHINE; + arg_host = optarg; + break; + + case ARG_TRANSIENT: + arg_transient = true; + break; + + case ARG_PRETTY: + arg_pretty = true; + break; + + case ARG_STATIC: + arg_static = true; + break; + + case ARG_NO_ASK_PASSWORD: + arg_ask_password = false; + break; + + case '?': + return -EINVAL; + + default: + assert_not_reached("Unhandled option"); + } + + return 1; +} + +static int hostnamectl_main(sd_bus *bus, int argc, char *argv[]) { + + static const struct { + const char* verb; + const enum { + MORE, + LESS, + EQUAL + } argc_cmp; + const int argc; + int (* const dispatch)(sd_bus *bus, char **args, unsigned n); + } verbs[] = { + { "status", LESS, 1, show_status }, + { "set-hostname", EQUAL, 2, set_hostname }, + { "set-icon-name", EQUAL, 2, set_icon_name }, + { "set-chassis", EQUAL, 2, set_chassis }, + { "set-deployment", EQUAL, 2, set_deployment }, + { "set-location", EQUAL, 2, set_location }, + }; + + int left; + unsigned i; + + assert(argc >= 0); + assert(argv); + + 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."); + } + + return verbs[i].dispatch(bus, argv + optind, left); +} + +int main(int argc, char *argv[]) { + _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; + int r; + + setlocale(LC_ALL, ""); + log_parse_environment(); + log_open(); + + r = parse_argv(argc, argv); + if (r <= 0) + goto finish; + + r = bus_connect_transport(arg_transport, arg_host, false, &bus); + if (r < 0) { + log_error_errno(r, "Failed to create bus connection: %m"); + goto finish; + } + + r = hostnamectl_main(bus, argc, argv); + +finish: + return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; +} diff --git a/src/grp-hostname/hostnamectl/hostnamectl.completion.bash b/src/grp-hostname/hostnamectl/hostnamectl.completion.bash new file mode 100644 index 0000000000..6a252188ea --- /dev/null +++ b/src/grp-hostname/hostnamectl/hostnamectl.completion.bash @@ -0,0 +1,64 @@ +# hostnamectl(1) completion -*- shell-script -*- +# +# This file is part of systemd. +# +# Copyright 2010 Ran Benita +# +# systemd is free software; you can redistribute it and/or modify it +# under the terms of the GNU Lesser General Public License as published by +# the Free Software Foundation; either version 2.1 of the License, or +# (at your option) any later version. +# +# systemd is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# General Public License for more details. +# +# You should have received a copy of the GNU Lesser General Public License +# along with systemd; If not, see <http://www.gnu.org/licenses/>. + +__contains_word () { + local w word=$1; shift + for w in "$@"; do + [[ $w = "$word" ]] && return + done +} + +_hostnamectl() { + local i verb comps + local cur=${COMP_WORDS[COMP_CWORD]} prev=${COMP_WORDS[COMP_CWORD-1]} + local OPTS='-h --help --version --transient --static --pretty + --no-ask-password -H --host --machine' + + if [[ $cur = -* ]]; then + COMPREPLY=( $(compgen -W '${OPTS[*]}' -- "$cur") ) + return 0 + fi + + local -A VERBS=( + [STANDALONE]='status' + [ICONS]='set-icon-name' + [NAME]='set-hostname set-deployment set-location' + [CHASSIS]='set-chassis' + ) + + for ((i=0; i < COMP_CWORD; i++)); do + if __contains_word "${COMP_WORDS[i]}" ${VERBS[*]}; then + verb=${COMP_WORDS[i]} + break + fi + done + + if [[ -z $verb ]]; then + comps=${VERBS[*]} + elif __contains_word "$verb" ${VERBS[CHASSIS]}; then + comps='desktop laptop server tablet handset watch embedded vm container' + elif __contains_word "$verb" ${VERBS[STANDALONE]} ${VERBS[ICONS]} ${VERBS[NAME]}; then + comps='' + fi + + COMPREPLY=( $(compgen -W '$comps' -- "$cur") ) + return 0 +} + +complete -F _hostnamectl hostnamectl diff --git a/src/grp-hostname/hostnamectl/hostnamectl.completion.zsh b/src/grp-hostname/hostnamectl/hostnamectl.completion.zsh new file mode 100644 index 0000000000..7528e0649d --- /dev/null +++ b/src/grp-hostname/hostnamectl/hostnamectl.completion.zsh @@ -0,0 +1,80 @@ +#compdef hostnamectl + +_hostnamectl_set-hostname() { + if (( CURRENT <= 3 )); then + _message "new hostname" + else + _message "no more options" + fi +} + +_hostnamectl_set-icon-name() { + if (( CURRENT <= 3 )); then + _message "new icon name" + else + _message "no more options" + fi +} + +_hostnamectl_set-chassis() { + if (( CURRENT <= 3 )); then + _chassis=( desktop laptop server tablet handset watch embedded vm container ) + _describe chassis _chassis + else + _message "no more options" + fi +} + +_hostnamectl_set-deployment() { + if (( CURRENT <= 3 )); then + _message "new environment" + else + _message "no more options" + fi +} + +_hostnamectl_set-location() { + if (( CURRENT <= 3 )); then + _message "new location" + else + _message "no more options" + fi +} + +_hostnamectl_command() { + local -a _hostnamectl_cmds + _hostnamectl_cmds=( + "status:Show current hostname settings" + "set-hostname:Set system hostname" + "set-icon-name:Set icon name for host" + "set-chassis:Set chassis type for host" + "set-deployment:Set deployment environment for host" + "set-location:Set location for host" + ) + if (( CURRENT == 1 )); then + _describe -t commands 'hostnamectl commands' _hostnamectl_cmds || compadd "$@" + else + local curcontext="$curcontext" + cmd="${${_hostnamectl_cmds[(r)$words[1]:*]%%:*}}" + if (( $#cmd )); then + if [[ $cmd == status ]]; then + _message "no options" + else + _hostnamectl_$cmd + fi + else + _message "unknown hostnamectl command: $words[1]" + fi + fi +} + +_arguments -s \ + {-h,--help}'[Show this help]' \ + '--version[Show package version]' \ + '--transient[Only set transient hostname]' \ + '--static[Only set static hostname]' \ + '--pretty[Only set pretty hostname]' \ + '--no-ask-password[Do not prompt for password]' \ + {-H+,--host=}'[Operate on remote host]:userathost:_sd_hosts_or_user_at_host' \ + {-M+,--machine=}'[Operate on local container]:machines:_sd_machines' \ + '*::hostnamectl commands:_hostnamectl_command' diff --git a/src/grp-hostname/hostnamectl/hostnamectl.xml b/src/grp-hostname/hostnamectl/hostnamectl.xml new file mode 100644 index 0000000000..60004e9d04 --- /dev/null +++ b/src/grp-hostname/hostnamectl/hostnamectl.xml @@ -0,0 +1,260 @@ +<?xml version='1.0'?> <!--*-nxml-*--> +<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" + "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd"> + +<!-- + This file is part of systemd. + + Copyright 2012 Lennart Poettering + + systemd is free software; you can redistribute it and/or modify it + under the terms of the GNU Lesser General Public License as published by + the Free Software Foundation; either version 2.1 of the License, or + (at your option) any later version. + + systemd is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with systemd; If not, see <http://www.gnu.org/licenses/>. +--> + +<refentry id="hostnamectl" conditional='ENABLE_HOSTNAMED' + xmlns:xi="http://www.w3.org/2001/XInclude"> + + <refentryinfo> + <title>hostnamectl</title> + <productname>systemd</productname> + + <authorgroup> + <author> + <contrib>Developer</contrib> + <firstname>Lennart</firstname> + <surname>Poettering</surname> + <email>lennart@poettering.net</email> + </author> + </authorgroup> + </refentryinfo> + + <refmeta> + <refentrytitle>hostnamectl</refentrytitle> + <manvolnum>1</manvolnum> + </refmeta> + + <refnamediv> + <refname>hostnamectl</refname> + <refpurpose>Control the system hostname</refpurpose> + </refnamediv> + + <refsynopsisdiv> + <cmdsynopsis> + <command>hostnamectl</command> + <arg choice="opt" rep="repeat">OPTIONS</arg> + <arg choice="req">COMMAND</arg> + </cmdsynopsis> + </refsynopsisdiv> + + <refsect1> + <title>Description</title> + + <para><command>hostnamectl</command> may be used to query and + change the system hostname and related settings.</para> + + <para>This tool distinguishes three different hostnames: the + high-level "pretty" hostname which might include all kinds of + special characters (e.g. "Lennart's Laptop"), the static hostname + which is used to initialize the kernel hostname at boot (e.g. + "lennarts-laptop"), and the transient hostname which is a fallback + value received from network configuration. If a static hostname is + set, and is valid (something other than localhost), then the + transient hostname is not used.</para> + + <para>Note that the pretty hostname has little restrictions on the + characters used, while the static and transient hostnames are + limited to the usually accepted characters of Internet domain + names.</para> + + <para>The static hostname is stored in + <filename>/etc/hostname</filename>, see + <citerefentry><refentrytitle>hostname</refentrytitle><manvolnum>5</manvolnum></citerefentry> + for more information. The pretty hostname, chassis type, and icon + name are stored in <filename>/etc/machine-info</filename>, see + <citerefentry><refentrytitle>machine-info</refentrytitle><manvolnum>5</manvolnum></citerefentry>.</para> + + <para>Use + <citerefentry><refentrytitle>systemd-firstboot</refentrytitle><manvolnum>1</manvolnum></citerefentry> + to initialize the system host name for mounted (but not booted) + system images.</para> + </refsect1> + + <refsect1> + <title>Options</title> + + <para>The following options are understood:</para> + + <variablelist> + <varlistentry> + <term><option>--no-ask-password</option></term> + + <listitem><para>Do not query the user for authentication for + privileged operations.</para></listitem> + </varlistentry> + + <varlistentry> + <term><option>--static</option></term> + <term><option>--transient</option></term> + <term><option>--pretty</option></term> + + <listitem><para>If <command>status</command> is used (or no + explicit command is given) and one of those fields is given, + <command>hostnamectl</command> will print out just this + selected hostname.</para> + + <para>If used with <command>set-hostname</command>, only the + selected hostname(s) will be updated. When more than one of + those options is used, all the specified hostnames will be + updated. </para></listitem> + </varlistentry> + + <xi:include href="user-system-options.xml" xpointer="host" /> + <xi:include href="user-system-options.xml" xpointer="machine" /> + + <xi:include href="standard-options.xml" xpointer="help" /> + <xi:include href="standard-options.xml" xpointer="version" /> + </variablelist> + + <para>The following commands are understood:</para> + + <variablelist> + <varlistentry> + <term><command>status</command></term> + + <listitem><para>Show current system + hostname and related + information.</para></listitem> + </varlistentry> + + <varlistentry> + <term><command>set-hostname <replaceable>NAME</replaceable></command></term> + + <listitem><para>Set the system hostname to + <replaceable>NAME</replaceable>. By default, this will alter + the pretty, the static, and the transient hostname alike; + however, if one or more of <option>--static</option>, + <option>--transient</option>, <option>--pretty</option> are + used, only the selected hostnames are changed. If the pretty + hostname is being set, and static or transient are being set + as well, the specified hostname will be simplified in regards + to the character set used before the latter are updated. This + is done by replacing spaces with <literal>-</literal> and + removing special characters. This ensures that the pretty and + the static hostname are always closely related while still + following the validity rules of the specific name. This + simplification of the hostname string is not done if only the + transient and/or static host names are set, and the pretty + host name is left untouched.</para> + + <para>Pass the empty string <literal></literal> as the + hostname to reset the selected hostnames to their default + (usually <literal>localhost</literal>).</para></listitem> + </varlistentry> + + <varlistentry> + <term><command>set-icon-name <replaceable>NAME</replaceable></command></term> + + <listitem><para>Set the system icon name to + <replaceable>NAME</replaceable>. The icon name is used by some + graphical applications to visualize this host. The icon name + should follow the <ulink + url="http://standards.freedesktop.org/icon-naming-spec/icon-naming-spec-latest.html">Icon + Naming Specification</ulink>.</para> + + <para>Pass an empty string to reset the icon name to the + default value, which is determined from chassis type (see + below) and possibly other parameters.</para></listitem> + </varlistentry> + + <varlistentry> + <term><command>set-chassis <replaceable>TYPE</replaceable></command></term> + + <listitem><para>Set the chassis type to + <replaceable>TYPE</replaceable>. The chassis type is used by + some graphical applications to visualize the host or alter + user interaction. Currently, the following chassis types are + defined: + <literal>desktop</literal>, + <literal>laptop</literal>, + <literal>server</literal>, + <literal>tablet</literal>, + <literal>handset</literal>, + <literal>watch</literal>, + <literal>embedded</literal>, + as well as the special chassis types + <literal>vm</literal> and + <literal>container</literal> for virtualized systems that lack + an immediate physical chassis.</para> + + <para>Pass an empty string to reset the chassis type to the + default value which is determined from the firmware and + possibly other parameters.</para> + </listitem> + </varlistentry> + + <varlistentry> + <term><command>set-deployment <replaceable>ENVIRONMENT</replaceable></command></term> + + <listitem><para>Set the deployment environment description. + <replaceable>ENVIRONMENT</replaceable> must be a single word + without any control characters. One of the following is + suggested: + <literal>development</literal>, + <literal>integration</literal>, + <literal>staging</literal>, + <literal>production</literal>. + </para> + + <para>Pass an empty string to reset to the default empty + value.</para> + </listitem> + </varlistentry> + + <varlistentry> + <term><command>set-location <replaceable>LOCATION</replaceable></command></term> + + <listitem><para>Set the location string for the system, if it + is known. <replaceable>LOCATION</replaceable> should be a + human-friendly, free-form string describing the physical + location of the system, if it is known and applicable. This + may be as generic as <literal>Berlin, Germany</literal> or as + specific as <literal>Left Rack, 2nd Shelf</literal>.</para> + + <para>Pass an empty string to reset to the default empty + value.</para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1> + <title>Exit status</title> + + <para>On success, 0 is returned, a non-zero failure code + otherwise.</para> + </refsect1> + + <refsect1> + <title>See Also</title> + <para> + <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>, + <citerefentry><refentrytitle>hostname</refentrytitle><manvolnum>1</manvolnum></citerefentry>, + <citerefentry><refentrytitle>hostname</refentrytitle><manvolnum>5</manvolnum></citerefentry>, + <citerefentry><refentrytitle>machine-info</refentrytitle><manvolnum>5</manvolnum></citerefentry>, + <citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>, + <citerefentry><refentrytitle>systemd-hostnamed.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>, + <citerefentry><refentrytitle>systemd-firstboot</refentrytitle><manvolnum>1</manvolnum></citerefentry> + </para> + </refsect1> + +</refentry> diff --git a/src/grp-hostname/systemd-hostnamed/.gitignore b/src/grp-hostname/systemd-hostnamed/.gitignore new file mode 100644 index 0000000000..1ff281b231 --- /dev/null +++ b/src/grp-hostname/systemd-hostnamed/.gitignore @@ -0,0 +1 @@ +org.freedesktop.hostname1.policy diff --git a/src/grp-hostname/systemd-hostnamed/Makefile b/src/grp-hostname/systemd-hostnamed/Makefile new file mode 100644 index 0000000000..0c8f0b5ae6 --- /dev/null +++ b/src/grp-hostname/systemd-hostnamed/Makefile @@ -0,0 +1,64 @@ +# -*- Mode: makefile; indent-tabs-mode: t -*- +# +# This file is part of systemd. +# +# Copyright 2010-2012 Lennart Poettering +# Copyright 2010-2012 Kay Sievers +# Copyright 2013 Zbigniew Jędrzejewski-Szmek +# Copyright 2013 David Strauss +# Copyright 2016 Luke Shumaker +# +# systemd is free software; you can redistribute it and/or modify it +# under the terms of the GNU Lesser General Public License as published by +# the Free Software Foundation; either version 2.1 of the License, or +# (at your option) any later version. +# +# systemd is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# Lesser General Public License for more details. +# +# You should have received a copy of the GNU Lesser General Public License +# along with systemd; If not, see <http://www.gnu.org/licenses/>. +include $(dir $(lastword $(MAKEFILE_LIST)))/../../../config.mk +include $(topsrcdir)/build-aux/Makefile.head.mk + +ifneq ($(ENABLE_HOSTNAMED),) +systemd_hostnamed_SOURCES = \ + src/hostname/hostnamed.c + +systemd_hostnamed_LDADD = \ + libsystemd-shared.la + +rootlibexec_PROGRAMS += \ + systemd-hostnamed + +nodist_systemunit_DATA += \ + units/systemd-hostnamed.service + +dist_systemunit_DATA_busnames += \ + units/org.freedesktop.hostname1.busname + +dist_dbuspolicy_DATA += \ + src/hostname/org.freedesktop.hostname1.conf + +dist_dbussystemservice_DATA += \ + src/hostname/org.freedesktop.hostname1.service + +polkitpolicy_files += \ + src/hostname/org.freedesktop.hostname1.policy + +SYSTEM_UNIT_ALIASES += \ + systemd-hostnamed.service dbus-org.freedesktop.hostname1.service + +BUSNAMES_TARGET_WANTS += \ + org.freedesktop.hostname1.busname + +endif # ENABLE_HOSTNAMED +polkitpolicy_in_files += \ + src/hostname/org.freedesktop.hostname1.policy.in + +EXTRA_DIST += \ + units/systemd-hostnamed.service.in + +include $(topsrcdir)/build-aux/Makefile.tail.mk diff --git a/src/grp-hostname/systemd-hostnamed/hostnamed.c b/src/grp-hostname/systemd-hostnamed/hostnamed.c new file mode 100644 index 0000000000..366adbb282 --- /dev/null +++ b/src/grp-hostname/systemd-hostnamed/hostnamed.c @@ -0,0 +1,743 @@ +/*** + This file is part of systemd. + + Copyright 2011 Lennart Poettering + + systemd is free software; you can redistribute it and/or modify it + under the terms of the GNU Lesser General Public License as published by + the Free Software Foundation; either version 2.1 of the License, or + (at your option) any later version. + + systemd is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with systemd; If not, see <http://www.gnu.org/licenses/>. +***/ + +#include <errno.h> +#include <string.h> +#include <sys/utsname.h> +#include <unistd.h> + +#include "basic/alloc-util.h" +#include "basic/def.h" +#include "basic/env-util.h" +#include "basic/fileio-label.h" +#include "basic/hostname-util.h" +#include "basic/parse-util.h" +#include "basic/path-util.h" +#include "basic/selinux-util.h" +#include "basic/strv.h" +#include "basic/user-util.h" +#include "basic/util.h" +#include "basic/virt.h" +#include "shared/bus-util.h" + +#define VALID_DEPLOYMENT_CHARS (DIGITS LETTERS "-.:") + +enum { + PROP_HOSTNAME, + PROP_STATIC_HOSTNAME, + PROP_PRETTY_HOSTNAME, + PROP_ICON_NAME, + PROP_CHASSIS, + PROP_DEPLOYMENT, + PROP_LOCATION, + PROP_KERNEL_NAME, + PROP_KERNEL_RELEASE, + PROP_KERNEL_VERSION, + PROP_OS_PRETTY_NAME, + PROP_OS_CPE_NAME, + _PROP_MAX +}; + +typedef struct Context { + char *data[_PROP_MAX]; + Hashmap *polkit_registry; +} Context; + +static void context_reset(Context *c) { + int p; + + assert(c); + + for (p = 0; p < _PROP_MAX; p++) + c->data[p] = mfree(c->data[p]); +} + +static void context_free(Context *c) { + assert(c); + + context_reset(c); + bus_verify_polkit_async_registry_free(c->polkit_registry); +} + +static int context_read_data(Context *c) { + int r; + struct utsname u; + + assert(c); + + context_reset(c); + + assert_se(uname(&u) >= 0); + c->data[PROP_KERNEL_NAME] = strdup(u.sysname); + c->data[PROP_KERNEL_RELEASE] = strdup(u.release); + c->data[PROP_KERNEL_VERSION] = strdup(u.version); + if (!c->data[PROP_KERNEL_NAME] || !c->data[PROP_KERNEL_RELEASE] || + !c->data[PROP_KERNEL_VERSION]) + return -ENOMEM; + + c->data[PROP_HOSTNAME] = gethostname_malloc(); + if (!c->data[PROP_HOSTNAME]) + return -ENOMEM; + + r = read_hostname_config("/etc/hostname", &c->data[PROP_STATIC_HOSTNAME]); + if (r < 0 && r != -ENOENT) + return r; + + r = parse_env_file("/etc/machine-info", NEWLINE, + "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], + NULL); + if (r < 0 && r != -ENOENT) + return r; + + r = parse_env_file("/etc/os-release", NEWLINE, + "PRETTY_NAME", &c->data[PROP_OS_PRETTY_NAME], + "CPE_NAME", &c->data[PROP_OS_CPE_NAME], + NULL); + if (r == -ENOENT) + r = parse_env_file("/usr/lib/os-release", NEWLINE, + "PRETTY_NAME", &c->data[PROP_OS_PRETTY_NAME], + "CPE_NAME", &c->data[PROP_OS_CPE_NAME], + NULL); + + if (r < 0 && r != -ENOENT) + return r; + + return 0; +} + +static bool valid_chassis(const char *chassis) { + assert(chassis); + + return nulstr_contains( + "vm\0" + "container\0" + "desktop\0" + "laptop\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) { + int r; + char *type; + unsigned t; + int v; + + v = detect_virtualization(); + + if (VIRTUALIZATION_IS_VM(v)) + return "vm"; + if (VIRTUALIZATION_IS_CONTAINER(v)) + return "container"; + + r = read_one_line_file("/sys/firmware/acpi/pm_profile", &type); + if (r < 0) + goto try_dmi; + + r = safe_atou(type, &t); + free(type); + if (r < 0) + goto try_dmi; + + /* 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: + case 3: + case 6: + return "desktop"; + + case 2: + return "laptop"; + + case 4: + case 5: + case 7: + return "server"; + + case 8: + return "tablet"; + } + +try_dmi: + r = read_one_line_file("/sys/class/dmi/id/chassis_type", &type); + if (r < 0) + return NULL; + + r = safe_atou(type, &t); + free(type); + if (r < 0) + return NULL; + + /* 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: + case 0x4: + case 0x6: + case 0x7: + return "desktop"; + + case 0x8: + case 0x9: + case 0xA: + case 0xE: + return "laptop"; + + case 0xB: + return "handset"; + + case 0x11: + case 0x1C: + case 0x1D: + return "server"; + + case 0x1E: + return "tablet"; + } + + return NULL; +} + +static char* context_fallback_icon_name(Context *c) { + const char *chassis; + + assert(c); + + if (!isempty(c->data[PROP_CHASSIS])) + return strappend("computer-", c->data[PROP_CHASSIS]); + + chassis = fallback_chassis(); + if (chassis) + return strappend("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 *static_hn; + const char *hn; + + assert(c); + + 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 host name, (ie: DHCP) comes next ... */ + else if (!isempty(c->data[PROP_HOSTNAME])) + hn = c->data[PROP_HOSTNAME]; + + /* ... fallback to static "localhost.*" ignored above ... */ + else if (!isempty(static_hn)) + hn = static_hn; + + /* ... and the ultimate fallback */ + else + hn = "localhost"; + + if (sethostname_idempotent(hn) < 0) + return -errno; + + 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", NULL, &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], NULL); + if (!t) + return -ENOMEM; + + u = strv_env_set(l, t); + if (!u) + return -ENOMEM; + + strv_free(l); + 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_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; + + 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; + + 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 method_set_hostname(sd_bus_message *m, void *userdata, sd_bus_error *error) { + Context *c = userdata; + const char *name; + int interactive; + char *h; + int r; + + assert(m); + assert(c); + + r = sd_bus_message_read(m, "sb", &name, &interactive); + if (r < 0) + return r; + + if (isempty(name)) + name = c->data[PROP_STATIC_HOSTNAME]; + + if (isempty(name)) + name = "localhost"; + + if (!hostname_is_valid(name, false)) + return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid hostname '%s'", name); + + if (streq_ptr(name, c->data[PROP_HOSTNAME])) + 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 */ + + h = strdup(name); + if (!h) + return -ENOMEM; + + free(c->data[PROP_HOSTNAME]); + c->data[PROP_HOSTNAME] = h; + + r = context_update_kernel_hostname(c); + if (r < 0) { + log_error_errno(r, "Failed to set host name: %m"); + return sd_bus_error_set_errnof(error, r, "Failed to set hostname: %s", strerror(-r)); + } + + log_info("Changed host name to '%s'", strna(c->data[PROP_HOSTNAME])); + + (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); + + if (streq_ptr(name, c->data[PROP_STATIC_HOSTNAME])) + return sd_bus_reply_method_return(m, NULL); + + 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 */ + + if (isempty(name)) + c->data[PROP_STATIC_HOSTNAME] = mfree(c->data[PROP_STATIC_HOSTNAME]); + else { + char *h; + + if (!hostname_is_valid(name, false)) + return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid static hostname '%s'", name); + + h = strdup(name); + if (!h) + return -ENOMEM; + + free(c->data[PROP_STATIC_HOSTNAME]); + c->data[PROP_STATIC_HOSTNAME] = h; + } + + r = context_update_kernel_hostname(c); + if (r < 0) { + log_error_errno(r, "Failed to set host name: %m"); + return sd_bus_error_set_errnof(error, r, "Failed to set hostname: %s", strerror(-r)); + } + + r = context_write_data_static_hostname(c); + if (r < 0) { + log_error_errno(r, "Failed to write static host name: %m"); + return sd_bus_error_set_errnof(error, r, "Failed to set static hostname: %s", strerror(-r)); + } + + log_info("Changed static host name 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); + + if (streq_ptr(name, c->data[prop])) + return sd_bus_reply_method_return(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( + 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 */ + + if (isempty(name)) + c->data[prop] = mfree(c->data[prop]); + 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_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 host name '%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); + + h = strdup(name); + if (!h) + return -ENOMEM; + + free(c->data[prop]); + c->data[prop] = h; + } + + 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: %s", strerror(-r)); + } + + log_info("Changed %s to '%s'", + prop == PROP_PRETTY_HOSTNAME ? "pretty host name" : + 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 const sd_bus_vtable hostname_vtable[] = { + SD_BUS_VTABLE_START(0), + SD_BUS_PROPERTY("Hostname", "s", NULL, offsetof(Context, data) + sizeof(char*) * PROP_HOSTNAME, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), + 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_PROPERTY("Deployment", "s", NULL, offsetof(Context, data) + sizeof(char*) * PROP_DEPLOYMENT, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), + SD_BUS_PROPERTY("Location", "s", NULL, offsetof(Context, data) + sizeof(char*) * PROP_LOCATION, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), + SD_BUS_PROPERTY("KernelName", "s", NULL, offsetof(Context, data) + sizeof(char*) * PROP_KERNEL_NAME, SD_BUS_VTABLE_PROPERTY_CONST), + SD_BUS_PROPERTY("KernelRelease", "s", NULL, offsetof(Context, data) + sizeof(char*) * PROP_KERNEL_RELEASE, SD_BUS_VTABLE_PROPERTY_CONST), + SD_BUS_PROPERTY("KernelVersion", "s", NULL, offsetof(Context, data) + sizeof(char*) * PROP_KERNEL_VERSION, SD_BUS_VTABLE_PROPERTY_CONST), + SD_BUS_PROPERTY("OperatingSystemPrettyName", "s", NULL, offsetof(Context, data) + sizeof(char*) * PROP_OS_PRETTY_NAME, SD_BUS_VTABLE_PROPERTY_CONST), + SD_BUS_PROPERTY("OperatingSystemCPEName", "s", NULL, offsetof(Context, data) + sizeof(char*) * PROP_OS_CPE_NAME, SD_BUS_VTABLE_PROPERTY_CONST), + SD_BUS_METHOD("SetHostname", "sb", NULL, method_set_hostname, SD_BUS_VTABLE_UNPRIVILEGED), + SD_BUS_METHOD("SetStaticHostname", "sb", NULL, method_set_static_hostname, SD_BUS_VTABLE_UNPRIVILEGED), + SD_BUS_METHOD("SetPrettyHostname", "sb", NULL, method_set_pretty_hostname, SD_BUS_VTABLE_UNPRIVILEGED), + SD_BUS_METHOD("SetIconName", "sb", NULL, method_set_icon_name, SD_BUS_VTABLE_UNPRIVILEGED), + SD_BUS_METHOD("SetChassis", "sb", NULL, method_set_chassis, SD_BUS_VTABLE_UNPRIVILEGED), + SD_BUS_METHOD("SetDeployment", "sb", NULL, method_set_deployment, SD_BUS_VTABLE_UNPRIVILEGED), + SD_BUS_METHOD("SetLocation", "sb", NULL, method_set_location, SD_BUS_VTABLE_UNPRIVILEGED), + SD_BUS_VTABLE_END, +}; + +static int connect_bus(Context *c, sd_event *event, sd_bus **_bus) { + _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; + int r; + + assert(c); + assert(event); + assert(_bus); + + r = sd_bus_default_system(&bus); + if (r < 0) + return log_error_errno(r, "Failed to get system bus connection: %m"); + + r = sd_bus_add_object_vtable(bus, NULL, "/org/freedesktop/hostname1", "org.freedesktop.hostname1", hostname_vtable, c); + if (r < 0) + return log_error_errno(r, "Failed to register object: %m"); + + r = sd_bus_request_name(bus, "org.freedesktop.hostname1", 0); + if (r < 0) + return log_error_errno(r, "Failed to register 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"); + + *_bus = bus; + bus = NULL; + + return 0; +} + +int main(int argc, char *argv[]) { + Context context = {}; + _cleanup_(sd_event_unrefp) sd_event *event = NULL; + _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; + int r; + + log_set_target(LOG_TARGET_AUTO); + log_parse_environment(); + log_open(); + + umask(0022); + mac_selinux_init(); + + if (argc != 1) { + log_error("This program takes no arguments."); + r = -EINVAL; + goto finish; + } + + r = sd_event_default(&event); + if (r < 0) { + log_error_errno(r, "Failed to allocate event loop: %m"); + goto finish; + } + + sd_event_set_watchdog(event, true); + + r = connect_bus(&context, event, &bus); + if (r < 0) + goto finish; + + r = context_read_data(&context); + if (r < 0) { + log_error_errno(r, "Failed to read hostname and machine information: %m"); + goto finish; + } + + r = bus_event_loop_with_idle(event, bus, "org.freedesktop.hostname1", DEFAULT_EXIT_USEC, NULL, NULL); + if (r < 0) { + log_error_errno(r, "Failed to run event loop: %m"); + goto finish; + } + +finish: + context_free(&context); + + return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; +} diff --git a/src/grp-hostname/systemd-hostnamed/org.freedesktop.hostname1.conf b/src/grp-hostname/systemd-hostnamed/org.freedesktop.hostname1.conf new file mode 100644 index 0000000000..46b4aadc83 --- /dev/null +++ b/src/grp-hostname/systemd-hostnamed/org.freedesktop.hostname1.conf @@ -0,0 +1,27 @@ +<?xml version="1.0"?> <!--*-nxml-*--> +<!DOCTYPE busconfig PUBLIC "-//freedesktop//DTD D-BUS Bus Configuration 1.0//EN" + "http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd"> + +<!-- + This file is part of systemd. + + systemd is free software; you can redistribute it and/or modify it + under the terms of the GNU Lesser General Public License as published by + the Free Software Foundation; either version 2.1 of the License, or + (at your option) any later version. +--> + +<busconfig> + + <policy user="root"> + <allow own="org.freedesktop.hostname1"/> + <allow send_destination="org.freedesktop.hostname1"/> + <allow receive_sender="org.freedesktop.hostname1"/> + </policy> + + <policy context="default"> + <allow send_destination="org.freedesktop.hostname1"/> + <allow receive_sender="org.freedesktop.hostname1"/> + </policy> + +</busconfig> diff --git a/src/grp-hostname/systemd-hostnamed/org.freedesktop.hostname1.policy.in b/src/grp-hostname/systemd-hostnamed/org.freedesktop.hostname1.policy.in new file mode 100644 index 0000000000..c32c1d4fda --- /dev/null +++ b/src/grp-hostname/systemd-hostnamed/org.freedesktop.hostname1.policy.in @@ -0,0 +1,50 @@ +<?xml version="1.0" encoding="UTF-8"?> <!--*-nxml-*--> +<!DOCTYPE policyconfig PUBLIC "-//freedesktop//DTD PolicyKit Policy Configuration 1.0//EN" + "http://www.freedesktop.org/standards/PolicyKit/1/policyconfig.dtd"> + +<!-- + This file is part of systemd. + + systemd is free software; you can redistribute it and/or modify it + under the terms of the GNU Lesser General Public License as published by + the Free Software Foundation; either version 2.1 of the License, or + (at your option) any later version. +--> + +<policyconfig> + + <vendor>The systemd Project</vendor> + <vendor_url>http://www.freedesktop.org/wiki/Software/systemd</vendor_url> + + <action id="org.freedesktop.hostname1.set-hostname"> + <_description>Set host name</_description> + <_message>Authentication is required to set the local host name.</_message> + <defaults> + <allow_any>auth_admin_keep</allow_any> + <allow_inactive>auth_admin_keep</allow_inactive> + <allow_active>auth_admin_keep</allow_active> + </defaults> + </action> + + <action id="org.freedesktop.hostname1.set-static-hostname"> + <_description>Set static host name</_description> + <_message>Authentication is required to set the statically configured local host name, as well as the pretty host name.</_message> + <defaults> + <allow_any>auth_admin_keep</allow_any> + <allow_inactive>auth_admin_keep</allow_inactive> + <allow_active>auth_admin_keep</allow_active> + </defaults> + <annotate key="org.freedesktop.policykit.imply">org.freedesktop.hostname1.set-hostname org.freedesktop.hostname1.set-machine-info</annotate> + </action> + + <action id="org.freedesktop.hostname1.set-machine-info"> + <_description>Set machine information</_description> + <_message>Authentication is required to set local machine information.</_message> + <defaults> + <allow_any>auth_admin_keep</allow_any> + <allow_inactive>auth_admin_keep</allow_inactive> + <allow_active>auth_admin_keep</allow_active> + </defaults> + </action> + +</policyconfig> diff --git a/src/grp-hostname/systemd-hostnamed/org.freedesktop.hostname1.service b/src/grp-hostname/systemd-hostnamed/org.freedesktop.hostname1.service new file mode 100644 index 0000000000..6041ed60ca --- /dev/null +++ b/src/grp-hostname/systemd-hostnamed/org.freedesktop.hostname1.service @@ -0,0 +1,12 @@ +# This file is part of systemd. +# +# systemd is free software; you can redistribute it and/or modify it +# under the terms of the GNU Lesser General Public License as published by +# the Free Software Foundation; either version 2.1 of the License, or +# (at your option) any later version. + +[D-BUS Service] +Name=org.freedesktop.hostname1 +Exec=/bin/false +User=root +SystemdService=dbus-org.freedesktop.hostname1.service diff --git a/src/grp-hostname/systemd-hostnamed/systemd-hostnamed.service.in b/src/grp-hostname/systemd-hostnamed/systemd-hostnamed.service.in new file mode 100644 index 0000000000..0b03a589ea --- /dev/null +++ b/src/grp-hostname/systemd-hostnamed/systemd-hostnamed.service.in @@ -0,0 +1,24 @@ +# This file is part of systemd. +# +# systemd is free software; you can redistribute it and/or modify it +# under the terms of the GNU Lesser General Public License as published by +# the Free Software Foundation; either version 2.1 of the License, or +# (at your option) any later version. + +[Unit] +Description=Hostname Service +Documentation=man:systemd-hostnamed.service(8) man:hostname(5) man:machine-info(5) +Documentation=http://www.freedesktop.org/wiki/Software/systemd/hostnamed + +[Service] +ExecStart=@rootlibexecdir@/systemd-hostnamed +BusName=org.freedesktop.hostname1 +CapabilityBoundingSet=CAP_SYS_ADMIN +WatchdogSec=3min +PrivateTmp=yes +PrivateDevices=yes +PrivateNetwork=yes +ProtectSystem=yes +ProtectHome=yes +MemoryDenyWriteExecute=yes +SystemCallFilter=~@clock @cpu-emulation @debug @keyring @module @mount @obsolete @raw-io diff --git a/src/grp-hostname/systemd-hostnamed/systemd-hostnamed.service.xml b/src/grp-hostname/systemd-hostnamed/systemd-hostnamed.service.xml new file mode 100644 index 0000000000..6990d41b02 --- /dev/null +++ b/src/grp-hostname/systemd-hostnamed/systemd-hostnamed.service.xml @@ -0,0 +1,85 @@ +<?xml version='1.0'?> <!--*-nxml-*--> +<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" + "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd"> + +<!-- + This file is part of systemd. + + Copyright 2012 Lennart Poettering + + systemd is free software; you can redistribute it and/or modify it + under the terms of the GNU Lesser General Public License as published by + the Free Software Foundation; either version 2.1 of the License, or + (at your option) any later version. + + systemd is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with systemd; If not, see <http://www.gnu.org/licenses/>. +--> + +<refentry id="systemd-hostnamed.service" conditional='ENABLE_HOSTNAMED'> + + <refentryinfo> + <title>systemd-hostnamed.service</title> + <productname>systemd</productname> + + <authorgroup> + <author> + <contrib>Developer</contrib> + <firstname>Lennart</firstname> + <surname>Poettering</surname> + <email>lennart@poettering.net</email> + </author> + </authorgroup> + </refentryinfo> + + <refmeta> + <refentrytitle>systemd-hostnamed.service</refentrytitle> + <manvolnum>8</manvolnum> + </refmeta> + + <refnamediv> + <refname>systemd-hostnamed.service</refname> + <refname>systemd-hostnamed</refname> + <refpurpose>Host name bus mechanism</refpurpose> + </refnamediv> + + <refsynopsisdiv> + <para><filename>systemd-hostnamed.service</filename></para> + <para><filename>/usr/lib/systemd/systemd-hostnamed</filename></para> + </refsynopsisdiv> + + <refsect1> + <title>Description</title> + + <para><filename>systemd-hostnamed</filename> is a system service + that may be used as a mechanism to change the system's hostname. + <filename>systemd-hostnamed</filename> is automatically activated + on request and terminates itself when it is unused.</para> + + <para>The tool + <citerefentry><refentrytitle>hostnamectl</refentrytitle><manvolnum>1</manvolnum></citerefentry> + is a command line client to this service.</para> + + <para>See the <ulink + url="http://www.freedesktop.org/wiki/Software/systemd/hostnamed"> + developer documentation</ulink> for information about the APIs + <filename>systemd-hostnamed</filename> provides.</para> + </refsect1> + + <refsect1> + <title>See Also</title> + <para> + <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>, + <citerefentry><refentrytitle>hostname</refentrytitle><manvolnum>5</manvolnum></citerefentry>, + <citerefentry><refentrytitle>machine-info</refentrytitle><manvolnum>5</manvolnum></citerefentry>, + <citerefentry><refentrytitle>hostnamectl</refentrytitle><manvolnum>1</manvolnum></citerefentry>, + <citerefentry><refentrytitle>sethostname</refentrytitle><manvolnum>2</manvolnum></citerefentry> + </para> + </refsect1> + +</refentry> |