osd-contiki/apps/time/resource_timestamp.c

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/**
* \file
* Resource for timestamp handling
* \author
* Ralf Schlatterbeck <rsc@runtux.com>
*
* \brief get/put time in seconds since 1970 (UNIX time)
* Note: the internal format of the time in seconds is a 64bit number
* unfortunately javascript (json) will only support double for which
* the mantissa isn't long enough for representing that number. So we're
* back to 32 bit and have a year 2038 problem.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "contiki.h"
#include "time.h"
#include "time_resource.h"
#include "jsonparse.h"
#include "er-coap.h"
#include "generic_resource.h"
int timestamp_from_string (const char *name, const char *uri, const char *s)
{
struct timeval tv;
// FIXME: Platform has no strtoll (long long)?
tv.tv_sec = strtol (s, NULL, 10);
settimeofday (&tv, NULL);
return 0;
}
size_t
timestamp_to_string (const char *name, const char *uri, char *buf, size_t bsize)
{
struct timeval tv;
gettimeofday (&tv, NULL);
// FIXME: Platform doesn't seem to support long long printing
// We get empty string
return snprintf (buf, bsize, "%ld", (long)tv.tv_sec);
}
GENERIC_RESOURCE
( timestamp
, Time
, s
, 1
, timestamp_from_string
, timestamp_to_string
);
/*
* VI settings, see coding style
* ex:ts=8:et:sw=2
*/