./move.sh

6 files changed, 914 insertions, 0 deletions

diff --git a/src/grp-timedate/systemd-timedated/.gitignore b/src/grp-timedate/systemd-timedated/.gitignore
new file mode 100644
index 0000000000..48757f0968
--- /dev/null
+++ b/src/grp-timedate/systemd-timedated/.gitignore
@@ -0,0 +1 @@
+org.freedesktop.timedate1.policy
diff --git a/src/grp-timedate/systemd-timedated/Makefile b/src/grp-timedate/systemd-timedated/Makefile
new file mode 100644
index 0000000000..798e3ba5a4
--- /dev/null
+++ b/src/grp-timedate/systemd-timedated/Makefile
@@ -0,0 +1,65 @@
+#  -*- 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_TIMEDATED),)
+systemd_timedated_SOURCES = \
+	src/timedate/timedated.c
+
+systemd_timedated_LDADD = \
+	libshared.la
+
+rootlibexec_PROGRAMS += \
+	systemd-timedated
+
+dist_dbussystemservice_DATA += \
+	src/timedate/org.freedesktop.timedate1.service
+
+dist_dbuspolicy_DATA += \
+	src/timedate/org.freedesktop.timedate1.conf
+
+nodist_systemunit_DATA += \
+	units/systemd-timedated.service
+
+dist_systemunit_DATA_busnames += \
+	units/org.freedesktop.timedate1.busname
+
+polkitpolicy_files += \
+	src/timedate/org.freedesktop.timedate1.policy
+
+SYSTEM_UNIT_ALIASES += \
+	systemd-timedated.service dbus-org.freedesktop.timedate1.service
+
+BUSNAMES_TARGET_WANTS += \
+	org.freedesktop.timedate1.busname
+
+endif # ENABLE_TIMEDATED
+
+polkitpolicy_in_files += \
+	src/timedate/org.freedesktop.timedate1.policy.in
+
+EXTRA_DIST += \
+	units/systemd-timedated.service.in
+
+include $(topsrcdir)/build-aux/Makefile.tail.mk
diff --git a/src/grp-timedate/systemd-timedated/org.freedesktop.timedate1.conf b/src/grp-timedate/systemd-timedated/org.freedesktop.timedate1.conf
new file mode 100644
index 0000000000..36557d5841
--- /dev/null
+++ b/src/grp-timedate/systemd-timedated/org.freedesktop.timedate1.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.timedate1"/>
+                <allow send_destination="org.freedesktop.timedate1"/>
+                <allow receive_sender="org.freedesktop.timedate1"/>
+        </policy>
+
+        <policy context="default">
+                <allow send_destination="org.freedesktop.timedate1"/>
+                <allow receive_sender="org.freedesktop.timedate1"/>
+        </policy>
+
+</busconfig>
diff --git a/src/grp-timedate/systemd-timedated/org.freedesktop.timedate1.policy.in b/src/grp-timedate/systemd-timedated/org.freedesktop.timedate1.policy.in
new file mode 100644
index 0000000000..aa30b70831
--- /dev/null
+++ b/src/grp-timedate/systemd-timedated/org.freedesktop.timedate1.policy.in
@@ -0,0 +1,62 @@
+<?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.timedate1.set-time">
+                <_description>Set system time</_description>
+                <_message>Authentication is required to set the system time.</_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.timedate1.set-timezone org.freedesktop.timedate1.set-ntp</annotate>
+        </action>
+
+        <action id="org.freedesktop.timedate1.set-timezone">
+                <_description>Set system timezone</_description>
+                <_message>Authentication is required to set the system timezone.</_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.timedate1.set-local-rtc">
+                <_description>Set RTC to local timezone or UTC</_description>
+                <_message>Authentication is required to control whether
+                the RTC stores the local or UTC time.</_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.timedate1.set-ntp">
+                <_description>Turn network time synchronization on or off</_description>
+                <_message>Authentication is required to control whether
+                network time synchronization shall be enabled.</_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-timedate/systemd-timedated/org.freedesktop.timedate1.service b/src/grp-timedate/systemd-timedated/org.freedesktop.timedate1.service
new file mode 100644
index 0000000000..875f4bec78
--- /dev/null
+++ b/src/grp-timedate/systemd-timedated/org.freedesktop.timedate1.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.timedate1
+Exec=/bin/false
+User=root
+SystemdService=dbus-org.freedesktop.timedate1.service
diff --git a/src/grp-timedate/systemd-timedated/timedated.c b/src/grp-timedate/systemd-timedated/timedated.c
new file mode 100644
index 0000000000..51a13fcf49
--- /dev/null
+++ b/src/grp-timedate/systemd-timedated/timedated.c
@@ -0,0 +1,747 @@
+/***
+  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 <unistd.h>
+
+#include <systemd/sd-bus.h>
+#include <systemd/sd-event.h>
+#include <systemd/sd-messages.h>
+
+#include "alloc-util.h"
+#include "bus-common-errors.h"
+#include "bus-error.h"
+#include "bus-util.h"
+#include "clock-util.h"
+#include "def.h"
+#include "fileio-label.h"
+#include "fs-util.h"
+#include "path-util.h"
+#include "selinux-util.h"
+#include "strv.h"
+#include "user-util.h"
+#include "util.h"
+
+#define NULL_ADJTIME_UTC "0.0 0 0\n0\nUTC\n"
+#define NULL_ADJTIME_LOCAL "0.0 0 0\n0\nLOCAL\n"
+
+static BUS_ERROR_MAP_ELF_REGISTER const sd_bus_error_map timedated_errors[] = {
+        SD_BUS_ERROR_MAP("org.freedesktop.timedate1.NoNTPSupport", EOPNOTSUPP),
+        SD_BUS_ERROR_MAP_END
+};
+
+typedef struct Context {
+        char *zone;
+        bool local_rtc;
+        bool can_ntp;
+        bool use_ntp;
+        Hashmap *polkit_registry;
+} Context;
+
+static void context_free(Context *c) {
+        assert(c);
+
+        free(c->zone);
+        bus_verify_polkit_async_registry_free(c->polkit_registry);
+}
+
+static int context_read_data(Context *c) {
+        _cleanup_free_ char *t = NULL;
+        int r;
+
+        assert(c);
+
+        r = get_timezone(&t);
+        if (r == -EINVAL)
+                log_warning_errno(r, "/etc/localtime should be a symbolic link to a time zone data file in /usr/share/zoneinfo/.");
+        else if (r < 0)
+                log_warning_errno(r, "Failed to get target of /etc/localtime: %m");
+
+        free(c->zone);
+        c->zone = t;
+        t = NULL;
+
+        c->local_rtc = clock_is_localtime(NULL) > 0;
+
+        return 0;
+}
+
+static int context_write_data_timezone(Context *c) {
+        _cleanup_free_ char *p = NULL;
+        int r = 0;
+
+        assert(c);
+
+        if (isempty(c->zone)) {
+                if (unlink("/etc/localtime") < 0 && errno != ENOENT)
+                        r = -errno;
+
+                return r;
+        }
+
+        p = strappend("../usr/share/zoneinfo/", c->zone);
+        if (!p)
+                return log_oom();
+
+        r = symlink_atomic(p, "/etc/localtime");
+        if (r < 0)
+                return r;
+
+        return 0;
+}
+
+static int context_write_data_local_rtc(Context *c) {
+        int r;
+        _cleanup_free_ char *s = NULL, *w = NULL;
+
+        assert(c);
+
+        r = read_full_file("/etc/adjtime", &s, NULL);
+        if (r < 0) {
+                if (r != -ENOENT)
+                        return r;
+
+                if (!c->local_rtc)
+                        return 0;
+
+                w = strdup(NULL_ADJTIME_LOCAL);
+                if (!w)
+                        return -ENOMEM;
+        } else {
+                char *p;
+                const char *e = "\n"; /* default if there is less than 3 lines */
+                const char *prepend = "";
+                size_t a, b;
+
+                p = strchrnul(s, '\n');
+                if (*p == '\0')
+                        /* only one line, no \n terminator */
+                        prepend = "\n0\n";
+                else if (p[1] == '\0') {
+                        /* only one line, with \n terminator */
+                        ++p;
+                        prepend = "0\n";
+                } else {
+                        p = strchr(p+1, '\n');
+                        if (!p) {
+                                /* only two lines, no \n terminator */
+                                prepend = "\n";
+                                p = s + strlen(s);
+                        } else {
+                                char *end;
+                                /* third line might have a \n terminator or not */
+                                p++;
+                                end = strchr(p, '\n');
+                                /* if we actually have a fourth line, use that as suffix "e", otherwise the default \n */
+                                if (end)
+                                        e = end;
+                        }
+                }
+
+                a = p - s;
+                b = strlen(e);
+
+                w = new(char, a + (c->local_rtc ? 5 : 3) + strlen(prepend) + b + 1);
+                if (!w)
+                        return -ENOMEM;
+
+                *(char*) mempcpy(stpcpy(stpcpy(mempcpy(w, s, a), prepend), c->local_rtc ? "LOCAL" : "UTC"), e, b) = 0;
+
+                if (streq(w, NULL_ADJTIME_UTC)) {
+                        if (unlink("/etc/adjtime") < 0)
+                                if (errno != ENOENT)
+                                        return -errno;
+
+                        return 0;
+                }
+        }
+
+        mac_selinux_init();
+        return write_string_file_atomic_label("/etc/adjtime", w);
+}
+
+static int context_read_ntp(Context *c, sd_bus *bus) {
+        _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+        _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
+        const char *s;
+        int r;
+
+        assert(c);
+        assert(bus);
+
+        r = sd_bus_call_method(
+                        bus,
+                        "org.freedesktop.systemd1",
+                        "/org/freedesktop/systemd1",
+                        "org.freedesktop.systemd1.Manager",
+                        "GetUnitFileState",
+                        &error,
+                        &reply,
+                        "s",
+                        "systemd-timesyncd.service");
+
+        if (r < 0) {
+                if (sd_bus_error_has_name(&error, SD_BUS_ERROR_FILE_NOT_FOUND) ||
+                    sd_bus_error_has_name(&error, "org.freedesktop.systemd1.LoadFailed") ||
+                    sd_bus_error_has_name(&error, "org.freedesktop.systemd1.NoSuchUnit"))
+                        return 0;
+
+                return r;
+        }
+
+        r = sd_bus_message_read(reply, "s", &s);
+        if (r < 0)
+                return r;
+
+        c->can_ntp = true;
+        c->use_ntp = STR_IN_SET(s, "enabled", "enabled-runtime");
+
+        return 0;
+}
+
+static int context_start_ntp(sd_bus *bus, sd_bus_error *error, bool enabled) {
+        int r;
+
+        assert(bus);
+        assert(error);
+
+        r = sd_bus_call_method(
+                bus,
+                "org.freedesktop.systemd1",
+                "/org/freedesktop/systemd1",
+                "org.freedesktop.systemd1.Manager",
+                enabled ? "StartUnit" : "StopUnit",
+                error,
+                NULL,
+                "ss",
+                "systemd-timesyncd.service",
+                "replace");
+        if (r < 0) {
+                if (sd_bus_error_has_name(error, SD_BUS_ERROR_FILE_NOT_FOUND) ||
+                    sd_bus_error_has_name(error, "org.freedesktop.systemd1.LoadFailed") ||
+                    sd_bus_error_has_name(error, "org.freedesktop.systemd1.NoSuchUnit"))
+                        return sd_bus_error_set_const(error, "org.freedesktop.timedate1.NoNTPSupport", "NTP not supported.");
+
+                return r;
+        }
+
+        return 0;
+}
+
+static int context_enable_ntp(sd_bus *bus, sd_bus_error *error, bool enabled) {
+        int r;
+
+        assert(bus);
+        assert(error);
+
+        if (enabled)
+                r = sd_bus_call_method(
+                                bus,
+                                "org.freedesktop.systemd1",
+                                "/org/freedesktop/systemd1",
+                                "org.freedesktop.systemd1.Manager",
+                                "EnableUnitFiles",
+                                error,
+                                NULL,
+                                "asbb", 1,
+                                "systemd-timesyncd.service",
+                                false, true);
+        else
+                r = sd_bus_call_method(
+                                bus,
+                                "org.freedesktop.systemd1",
+                                "/org/freedesktop/systemd1",
+                                "org.freedesktop.systemd1.Manager",
+                                "DisableUnitFiles",
+                                error,
+                                NULL,
+                                "asb", 1,
+                                "systemd-timesyncd.service",
+                                false);
+
+        if (r < 0) {
+                if (sd_bus_error_has_name(error, SD_BUS_ERROR_FILE_NOT_FOUND))
+                        return sd_bus_error_set_const(error, "org.freedesktop.timedate1.NoNTPSupport", "NTP not supported.");
+
+                return r;
+        }
+
+        r = sd_bus_call_method(
+                        bus,
+                        "org.freedesktop.systemd1",
+                        "/org/freedesktop/systemd1",
+                        "org.freedesktop.systemd1.Manager",
+                        "Reload",
+                        error,
+                        NULL,
+                        NULL);
+        if (r < 0)
+                return r;
+
+        return 0;
+}
+
+static int property_get_rtc_time(
+                sd_bus *bus,
+                const char *path,
+                const char *interface,
+                const char *property,
+                sd_bus_message *reply,
+                void *userdata,
+                sd_bus_error *error) {
+
+        struct tm tm;
+        usec_t t;
+        int r;
+
+        zero(tm);
+        r = clock_get_hwclock(&tm);
+        if (r == -EBUSY) {
+                log_warning("/dev/rtc is busy. Is somebody keeping it open continuously? That's not a good idea... Returning a bogus RTC timestamp.");
+                t = 0;
+        } else if (r == -ENOENT) {
+                log_debug("/dev/rtc not found.");
+                t = 0; /* no RTC found */
+        } else if (r < 0)
+                return sd_bus_error_set_errnof(error, r, "Failed to read RTC: %m");
+        else
+                t = (usec_t) timegm(&tm) * USEC_PER_SEC;
+
+        return sd_bus_message_append(reply, "t", t);
+}
+
+static int property_get_time(
+                sd_bus *bus,
+                const char *path,
+                const char *interface,
+                const char *property,
+                sd_bus_message *reply,
+                void *userdata,
+                sd_bus_error *error) {
+
+        return sd_bus_message_append(reply, "t", now(CLOCK_REALTIME));
+}
+
+static int property_get_ntp_sync(
+                sd_bus *bus,
+                const char *path,
+                const char *interface,
+                const char *property,
+                sd_bus_message *reply,
+                void *userdata,
+                sd_bus_error *error) {
+
+        return sd_bus_message_append(reply, "b", ntp_synced());
+}
+
+static int method_set_timezone(sd_bus_message *m, void *userdata, sd_bus_error *error) {
+        Context *c = userdata;
+        const char *z;
+        int interactive;
+        char *t;
+        int r;
+
+        assert(m);
+        assert(c);
+
+        r = sd_bus_message_read(m, "sb", &z, &interactive);
+        if (r < 0)
+                return r;
+
+        if (!timezone_is_valid(z))
+                return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid time zone '%s'", z);
+
+        if (streq_ptr(z, c->zone))
+                return sd_bus_reply_method_return(m, NULL);
+
+        r = bus_verify_polkit_async(
+                        m,
+                        CAP_SYS_TIME,
+                        "org.freedesktop.timedate1.set-timezone",
+                        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 */
+
+        t = strdup(z);
+        if (!t)
+                return -ENOMEM;
+
+        free(c->zone);
+        c->zone = t;
+
+        /* 1. Write new configuration file */
+        r = context_write_data_timezone(c);
+        if (r < 0) {
+                log_error_errno(r, "Failed to set time zone: %m");
+                return sd_bus_error_set_errnof(error, r, "Failed to set time zone: %m");
+        }
+
+        /* 2. Tell the kernel our timezone */
+        clock_set_timezone(NULL);
+
+        if (c->local_rtc) {
+                struct timespec ts;
+                struct tm *tm;
+
+                /* 3. Sync RTC from system clock, with the new delta */
+                assert_se(clock_gettime(CLOCK_REALTIME, &ts) == 0);
+                assert_se(tm = localtime(&ts.tv_sec));
+                clock_set_hwclock(tm);
+        }
+
+        log_struct(LOG_INFO,
+                   LOG_MESSAGE_ID(SD_MESSAGE_TIMEZONE_CHANGE),
+                   "TIMEZONE=%s", c->zone,
+                   LOG_MESSAGE("Changed time zone to '%s'.", c->zone),
+                   NULL);
+
+        (void) sd_bus_emit_properties_changed(sd_bus_message_get_bus(m), "/org/freedesktop/timedate1", "org.freedesktop.timedate1", "Timezone", NULL);
+
+        return sd_bus_reply_method_return(m, NULL);
+}
+
+static int method_set_local_rtc(sd_bus_message *m, void *userdata, sd_bus_error *error) {
+        int lrtc, fix_system, interactive;
+        Context *c = userdata;
+        struct timespec ts;
+        int r;
+
+        assert(m);
+        assert(c);
+
+        r = sd_bus_message_read(m, "bbb", &lrtc, &fix_system, &interactive);
+        if (r < 0)
+                return r;
+
+        if (lrtc == c->local_rtc)
+                return sd_bus_reply_method_return(m, NULL);
+
+        r = bus_verify_polkit_async(
+                        m,
+                        CAP_SYS_TIME,
+                        "org.freedesktop.timedate1.set-local-rtc",
+                        NULL,
+                        interactive,
+                        UID_INVALID,
+                        &c->polkit_registry,
+                        error);
+        if (r < 0)
+                return r;
+        if (r == 0)
+                return 1;
+
+        c->local_rtc = lrtc;
+
+        /* 1. Write new configuration file */
+        r = context_write_data_local_rtc(c);
+        if (r < 0) {
+                log_error_errno(r, "Failed to set RTC to local/UTC: %m");
+                return sd_bus_error_set_errnof(error, r, "Failed to set RTC to local/UTC: %m");
+        }
+
+        /* 2. Tell the kernel our timezone */
+        clock_set_timezone(NULL);
+
+        /* 3. Synchronize clocks */
+        assert_se(clock_gettime(CLOCK_REALTIME, &ts) == 0);
+
+        if (fix_system) {
+                struct tm tm;
+
+                /* Sync system clock from RTC; first,
+                 * initialize the timezone fields of
+                 * struct tm. */
+                if (c->local_rtc)
+                        tm = *localtime(&ts.tv_sec);
+                else
+                        tm = *gmtime(&ts.tv_sec);
+
+                /* Override the main fields of
+                 * struct tm, but not the timezone
+                 * fields */
+                if (clock_get_hwclock(&tm) >= 0) {
+
+                        /* And set the system clock
+                         * with this */
+                        if (c->local_rtc)
+                                ts.tv_sec = mktime(&tm);
+                        else
+                                ts.tv_sec = timegm(&tm);
+
+                        clock_settime(CLOCK_REALTIME, &ts);
+                }
+
+        } else {
+                struct tm *tm;
+
+                /* Sync RTC from system clock */
+                if (c->local_rtc)
+                        tm = localtime(&ts.tv_sec);
+                else
+                        tm = gmtime(&ts.tv_sec);
+
+                clock_set_hwclock(tm);
+        }
+
+        log_info("RTC configured to %s time.", c->local_rtc ? "local" : "UTC");
+
+        (void) sd_bus_emit_properties_changed(sd_bus_message_get_bus(m), "/org/freedesktop/timedate1", "org.freedesktop.timedate1", "LocalRTC", NULL);
+
+        return sd_bus_reply_method_return(m, NULL);
+}
+
+static int method_set_time(sd_bus_message *m, void *userdata, sd_bus_error *error) {
+        int relative, interactive;
+        Context *c = userdata;
+        int64_t utc;
+        struct timespec ts;
+        usec_t start;
+        struct tm* tm;
+        int r;
+
+        assert(m);
+        assert(c);
+
+        if (c->use_ntp)
+                return sd_bus_error_setf(error, BUS_ERROR_AUTOMATIC_TIME_SYNC_ENABLED, "Automatic time synchronization is enabled");
+
+        /* this only gets used if dbus does not provide a timestamp */
+        start = now(CLOCK_MONOTONIC);
+
+        r = sd_bus_message_read(m, "xbb", &utc, &relative, &interactive);
+        if (r < 0)
+                return r;
+
+        if (!relative && utc <= 0)
+                return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid absolute time");
+
+        if (relative && utc == 0)
+                return sd_bus_reply_method_return(m, NULL);
+
+        if (relative) {
+                usec_t n, x;
+
+                n = now(CLOCK_REALTIME);
+                x = n + utc;
+
+                if ((utc > 0 && x < n) ||
+                    (utc < 0 && x > n))
+                        return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Time value overflow");
+
+                timespec_store(&ts, x);
+        } else
+                timespec_store(&ts, (usec_t) utc);
+
+        r = bus_verify_polkit_async(
+                        m,
+                        CAP_SYS_TIME,
+                        "org.freedesktop.timedate1.set-time",
+                        NULL,
+                        interactive,
+                        UID_INVALID,
+                        &c->polkit_registry,
+                        error);
+        if (r < 0)
+                return r;
+        if (r == 0)
+                return 1;
+
+        /* adjust ts for time spent in program */
+        r = sd_bus_message_get_monotonic_usec(m, &start);
+        /* when sd_bus_message_get_monotonic_usec() returns -ENODATA it does not modify &start */
+        if (r < 0 && r != -ENODATA)
+                return r;
+
+        timespec_store(&ts, timespec_load(&ts) + (now(CLOCK_MONOTONIC) - start));
+
+        /* Set system clock */
+        if (clock_settime(CLOCK_REALTIME, &ts) < 0) {
+                log_error_errno(errno, "Failed to set local time: %m");
+                return sd_bus_error_set_errnof(error, errno, "Failed to set local time: %m");
+        }
+
+        /* Sync down to RTC */
+        if (c->local_rtc)
+                tm = localtime(&ts.tv_sec);
+        else
+                tm = gmtime(&ts.tv_sec);
+        clock_set_hwclock(tm);
+
+        log_struct(LOG_INFO,
+                   LOG_MESSAGE_ID(SD_MESSAGE_TIME_CHANGE),
+                   "REALTIME="USEC_FMT, timespec_load(&ts),
+                   LOG_MESSAGE("Changed local time to %s", ctime(&ts.tv_sec)),
+                   NULL);
+
+        return sd_bus_reply_method_return(m, NULL);
+}
+
+static int method_set_ntp(sd_bus_message *m, void *userdata, sd_bus_error *error) {
+        int enabled, interactive;
+        Context *c = userdata;
+        int r;
+
+        assert(m);
+        assert(c);
+
+        r = sd_bus_message_read(m, "bb", &enabled, &interactive);
+        if (r < 0)
+                return r;
+
+        if ((bool)enabled == c->use_ntp)
+                return sd_bus_reply_method_return(m, NULL);
+
+        r = bus_verify_polkit_async(
+                        m,
+                        CAP_SYS_TIME,
+                        "org.freedesktop.timedate1.set-ntp",
+                        NULL,
+                        interactive,
+                        UID_INVALID,
+                        &c->polkit_registry,
+                        error);
+        if (r < 0)
+                return r;
+        if (r == 0)
+                return 1;
+
+        r = context_enable_ntp(sd_bus_message_get_bus(m), error, enabled);
+        if (r < 0)
+                return r;
+
+        r = context_start_ntp(sd_bus_message_get_bus(m), error, enabled);
+        if (r < 0)
+                return r;
+
+        c->use_ntp = enabled;
+        log_info("Set NTP to %s", enabled ? "enabled" : "disabled");
+
+        (void) sd_bus_emit_properties_changed(sd_bus_message_get_bus(m), "/org/freedesktop/timedate1", "org.freedesktop.timedate1", "NTP", NULL);
+
+        return sd_bus_reply_method_return(m, NULL);
+}
+
+static const sd_bus_vtable timedate_vtable[] = {
+        SD_BUS_VTABLE_START(0),
+        SD_BUS_PROPERTY("Timezone", "s", NULL, offsetof(Context, zone), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
+        SD_BUS_PROPERTY("LocalRTC", "b", bus_property_get_bool, offsetof(Context, local_rtc), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
+        SD_BUS_PROPERTY("CanNTP", "b", bus_property_get_bool, offsetof(Context, can_ntp), 0),
+        SD_BUS_PROPERTY("NTP", "b", bus_property_get_bool, offsetof(Context, use_ntp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
+        SD_BUS_PROPERTY("NTPSynchronized", "b", property_get_ntp_sync, 0, 0),
+        SD_BUS_PROPERTY("TimeUSec", "t", property_get_time, 0, 0),
+        SD_BUS_PROPERTY("RTCTimeUSec", "t", property_get_rtc_time, 0, 0),
+        SD_BUS_METHOD("SetTime", "xbb", NULL, method_set_time, SD_BUS_VTABLE_UNPRIVILEGED),
+        SD_BUS_METHOD("SetTimezone", "sb", NULL, method_set_timezone, SD_BUS_VTABLE_UNPRIVILEGED),
+        SD_BUS_METHOD("SetLocalRTC", "bbb", NULL, method_set_local_rtc, SD_BUS_VTABLE_UNPRIVILEGED),
+        SD_BUS_METHOD("SetNTP", "bb", NULL, method_set_ntp, 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/timedate1", "org.freedesktop.timedate1", timedate_vtable, c);
+        if (r < 0)
+                return log_error_errno(r, "Failed to register object: %m");
+
+        r = sd_bus_request_name(bus, "org.freedesktop.timedate1", 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);
+
+        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;
+
+        (void) sd_bus_negotiate_timestamp(bus, true);
+
+        r = context_read_data(&context);
+        if (r < 0) {
+                log_error_errno(r, "Failed to read time zone data: %m");
+                goto finish;
+        }
+
+        r = context_read_ntp(&context, bus);
+        if (r < 0) {
+                log_error_errno(r, "Failed to determine whether NTP is enabled: %m");
+                goto finish;
+        }
+
+        r = bus_event_loop_with_idle(event, bus, "org.freedesktop.timedate1", 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;
+}