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 <sys/times.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 ()

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 int set_tz (const char *tz)

static DBusMessage * server_activate_net_time (DBusMessage *msg)

static void log_tm (const char *tag, const struct tm *tm)

static DBusMessage * server_get_time_format (DBusMessage *msg)

static DBusMessage * server_get_default_tz (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 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.

Author:: Simo Piiroinen <[email protected]>
Raimo Vuonnala <[email protected]>

Function Documentation

static gboolean handle_alarm ( DBusConnection * bus ) [static]

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

static int read_conf ( ) [static]

Read /home/user/.clockd.conf contents

Returns:: 0 if OK, -1 if error

Referenced by server_init().

static int save_conf ( void ) [static]

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

Returns:: 0 if OK, -1 if error

Referenced by server_init(), server_set_autosync(), server_set_time(), server_set_time_format(), and server_set_tz().

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

Referenced by dump_date(), get_utc_offset(), handle_alarm(), send_time_change_indication(), server_init(), time_get_dst_usage(), and time_get_tzname().

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

Referenced by dump_date(), time_get_time_diff(), and time_get_utc_offset().

static void dump_date ( void ) [static]

Dump current date settings to syslog.

Referenced by server_init(), server_set_time(), and server_set_tz().

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

Referenced by handle_alarm(), server_set_autosync(), server_set_time(), server_set_time_format(), and server_set_tz().

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

Referenced by server_activate_net_time(), server_get_autosync(), server_get_default_tz(), server_get_time(), server_get_time_format(), server_get_tz(), server_have_opertime(), server_is_net_time_changed(), server_set_autosync(), server_set_time(), server_set_time_format(), and server_set_tz().

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

Referenced by server_filter().

static int set_tz ( const char * tz ) [static]

Set system timezone

Parameters:

tz

Timezone

Returns:: 0 if OK, !=0 if fails

Referenced by server_init(), and server_set_tz().

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

Referenced by server_filter().

static void log_tm	(	const char *	tag,
		const struct tm *	tm
	)			`[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

Referenced by server_filter().

static DBusMessage* server_get_default_tz ( DBusMessage * msg ) [static]

Handle D-Bus get_default_tz method

Parameters:

msg

request message

Returns:: NULL if fails, pointer to response DBusMessage if OK

Referenced by server_filter().

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

Referenced by server_filter().

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.conf.

Parameters:

msg

request message

Returns:: NULL if fails, pointer to response DBusMessage if OK

Referenced by server_filter().

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

Referenced by server_filter().

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

Referenced by server_filter().

static DBusMessage* server_set_tz ( DBusMessage * msg ) [static]

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

Parameters:

msg

request message

Returns:: NULL if fails, pointer to response DBusMessage if OK

Referenced by server_filter().

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

Referenced by server_filter().

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.conf.

Parameters:

msg

request message

Returns:: NULL if fails, pointer to response DBusMessage if OK

Referenced by server_filter().

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

Referenced by server_filter().

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

Referenced by server_init(), and server_quit().

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.conf)
D-Bus connections
libosso init
timezone from /etc/localtime or /home/user/.clockd.conf

Returns:: 0 if OK, -1 if error

Referenced by mainloop_run().

void server_quit ( void )

Deinitialize D-Bus server

Referenced by mainloop_run().


Functions
static gboolean	handle_alarm (DBusConnection *bus)
static int	read_conf ()
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 int	set_tz (const char *tz)
static DBusMessage *	server_activate_net_time (DBusMessage *msg)
static void	log_tm (const char tag, const struct tm tm)
static DBusMessage *	server_get_time_format (DBusMessage *msg)
static DBusMessage *	server_get_default_tz (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 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)