server.c File Reference

clockd 'server' More...

#include <sys/types.h>
#include <sys/socket.h>
#include <string.h>
#include <stdlib.h>
#include <limits.h>
#include <unistd.h>
#include <stdio.h>
#include <errno.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/time.h>
#include <time.h>
#include <signal.h>
#include <ctype.h>
#include <libosso.h>
#include "codec.h"
#include <dbus/dbus-glib-lowlevel.h>
#include <assert.h>
#include "logging.h"
#include "server.h"
#include "libtime.h"
#include "clock_dbus.h"

Functions
static gboolean	handle_alarm (DBusConnection *bus)
static int	read_conf (void)
static int	save_conf (void)
static int	get_dst (time_t tick)
static int	get_utc_offset (time_t tick, int dst)
static void	dump_date (void)
static int	send_time_change_indication (time_t t)
static int	set_time (time_t t)
static DBusMessage *	server_new_rsp (DBusMessage *msg, int type,...)
static DBusMessage *	server_set_time (DBusMessage *msg)
static DBusMessage *	server_activate_net_time (DBusMessage *msg)
static void	activate_delayed_net_time (void)
static void	handle_csd_net_time_change (DBusMessage *msg)
static DBusMessage *	server_get_time_format (DBusMessage *msg)
static DBusMessage *	server_get_time (DBusMessage *msg)
static DBusMessage *	server_set_time_format (DBusMessage *msg)
static DBusMessage *	server_get_tz (DBusMessage *msg)
static DBusMessage *	server_is_net_time_changed (DBusMessage *msg)
static int	set_tz (const char *tz)
static DBusMessage *	server_set_tz (DBusMessage *msg)
static DBusMessage *	server_get_autosync (DBusMessage *msg)
static DBusMessage *	server_set_autosync (DBusMessage *msg)
static DBusMessage *	server_have_opertime (DBusMessage *msg)
static DBusHandlerResult	server_filter (DBusConnection *conn, DBusMessage *msg, void *user_data)
int	server_init (void)
void	server_quit (void)

---

Detailed Description

This is D-Bus server for clockd that communicates with clock/time -aware applications. It also listens for CSD NET_TIME_CHANGE signal and reacts to it accordingly.

Copyright (C) 2008 Nokia. All rights reserved.

Author:

Simo Piiroinen <simo.piiroinen@nokia.com>

Raimo Vuonnala <raimo.vuonnala@nokia.com>

---

Function Documentation

static gboolean handle_alarm

(

DBusConnection *

bus

)

[static]

Check DST change and send time change indication when DST changes.

static int read_conf

(

void

)

[static]

Read /home/user/.clockd/clockd.conf contents

Returns:

0 if OK, -1 if error

static int save_conf

(

void

)

[static]

Save current config to /home/user/.clockd/clockd.conf

Returns:

0 if OK, -1 if error

static int get_dst

(

time_t

tick

)

[static]

Get daylight state

Parameters:

tick

Current time, 0 if not known

Returns:

0 if no DST, 1 if DST

static int get_utc_offset	(	time_t	tick,
		int	dst
	)			[static]

Get UTC offset

Parameters:

	tick	Current time, 0 if not known
	dst	nonzero if daylight is counted in

Returns:

Offset in secs

static void dump_date

(

void

)

[static]

Dump current date settings to syslog.

static int send_time_change_indication

(

time_t

t

)

[static]

Send "change" indication to all interested parties (via libosso).

Parameters:

t

Current time

Returns:

0 if OK, -1 if error

static int set_time

(

time_t

t

)

[static]

Set system and RTC time using suidroot rclockd helper

Parameters:

t

Current time

Returns:

0 if OK, -1 if error

static DBusMessage* server_new_rsp	(	DBusMessage *	msg,
		int	type,
			...
	)			[static]

Create D-Bus method call response message

Parameters:

	msg	request message
	type	vararg type/value attributes

Returns:

NULL if fails, pointer to DBusMessage if OK

static DBusMessage* server_set_time

(

DBusMessage *

msg

)

[static]

Handle D-Bus set_time method. Sets system/RTC time and sends time change indication with libosso.

Parameters:

msg

request message

Returns:

NULL if fails, pointer to response DBusMessage if OK

static DBusMessage* server_activate_net_time

(

DBusMessage *

msg

)

[static]

Handle D-Bus activate_net_time method. Sets system/RTC time and sends time change indication with libosso.

Parameters:

msg

request message

Returns:

NULL if fails, pointer to response DBusMessage if OK

static void activate_delayed_net_time

(

void

)

[static]

Activate network time. Use case:

• net sync is disabled when network time is got
• network time is enabled

static void handle_csd_net_time_change

(

DBusMessage *

msg

)

[static]

Handle D-Bus net_time_change signal from CSD. If network autosync is enabled, set system/RTC time and sends time change indication with libosso; otherwise just store the data (that can be activated with activate_net_time method later)

Parameters:

msg

signal message

static DBusMessage* server_get_time_format

(

DBusMessage *

msg

)

[static]

Handle D-Bus get_time_fmt method

Parameters:

msg

request message

Returns:

NULL if fails, pointer to response DBusMessage if OK

static DBusMessage* server_get_time

(

DBusMessage *

msg

)

[static]

Handle D-Bus get_time method

Parameters:

msg

request message

Returns:

NULL if fails, pointer to response DBusMessage if OK

static DBusMessage* server_set_time_format

(

DBusMessage *

msg

)

[static]

Handle D-Bus get_time_fmt method. Sets the time format locally and sends time change indication with libosso. Saves config to /home/user/.clockd/clockd.conf.

Parameters:

msg

request message

Returns:

NULL if fails, pointer to response DBusMessage if OK

static DBusMessage* server_get_tz

(

DBusMessage *

msg

)

[static]

Handle D-Bus get_tz method.

Parameters:

msg

request message

Returns:

NULL if fails, pointer to response DBusMessage if OK

static DBusMessage* server_is_net_time_changed

(

DBusMessage *

msg

)

[static]

Handle D-Bus is_net_time_changed method

Parameters:

msg

request message

Returns:

NULL if fails, pointer to response DBusMessage if OK

static int set_tz

(

const char *

tz

)

[static]

Set system timezone

Parameters:

tz

Timezone

Returns:

0 if OK, !=0 if fails

static DBusMessage* server_set_tz

(

DBusMessage *

msg

)

[static]

Handle D-Bus set_tz method. Sets the time zone and sends time change indication with libosso. Saves config to /home/user/.clockd/clockd.conf.

Parameters:

msg

request message

Returns:

NULL if fails, pointer to response DBusMessage if OK

static DBusMessage* server_get_autosync

(

DBusMessage *

msg

)

[static]

Handle D-Bus get_autosync method

Parameters:

msg

request message

Returns:

NULL if fails, pointer to response DBusMessage if OK

static DBusMessage* server_set_autosync

(

DBusMessage *

msg

)

[static]

Handle D-Bus set_autosync method. Set autosync on/off and sends time change indication with libosso. Saves config to /home/user/.clockd/clockd.conf.

Parameters:

msg

request message

Returns:

NULL if fails, pointer to response DBusMessage if OK

static DBusMessage* server_have_opertime

(

DBusMessage *

msg

)

[static]

Handle D-Bus have_opertime method

Parameters:

msg

request message

Returns:

NULL if fails, pointer to response DBusMessage if OK

static DBusHandlerResult server_filter	(	DBusConnection *	conn,
		DBusMessage *	msg,
		void *	user_data
	)			[static]

Handle requests (methods or signals) coming via D-Bus

Parameters:

	conn	D-Bus connection
	msg	D-Bus message
	user_data	User data (not used)

Returns:

DBusHandlerResult

int server_init

(

void

)

Init D-Bus server

The following is set up:

• settings from environment (/etc/clockd/clockd-settings.default)
• settings from configuration file (/home/user/.clockd/clockd.conf)
• D-Bus connections
• libosso init
• timezone from /etc/localtime or /home/user/.clockd/clockd.conf

Returns:

0 if OK, -1 if error

void server_quit

(

void

)

Deinitialize D-Bus server

---