b4fb8c3f52
New application and new example. We use the built-in timer routines and add an offset to get the wallclock time. The offset can be set by time-changing routines (currently only settimeofday). We also maintain an offset for timezone handling but this isn't currently fully implemented.
127 lines
2.8 KiB
C
127 lines
2.8 KiB
C
/**
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* \file
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* Resource for gmtime (utc) / localtime handling
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* \author
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* Ralf Schlatterbeck <rsc@runtux.com>
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*
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* \brief get time as a string in utc or localtime
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "contiki.h"
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#include "time.h"
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#include "time_resource.h"
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#include "jsonparse.h"
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/* Only coap 13 for now */
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#include "er-coap-13.h"
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RESOURCE \
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( localtime
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, METHOD_GET
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, "clock/localtime"
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, "title=\"Time\";rt=\"localtime\""
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);
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RESOURCE \
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( gmtime
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, METHOD_GET
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, "clock/utc"
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, "title=\"Time\";rt=\"utc\""
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);
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void
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time_handler
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( void* request
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, void* response
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, uint8_t *buffer
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, uint16_t preferred_size
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, int32_t *offset
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, struct tm *(*method)(const time_t *,struct tm *)
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)
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{
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int success = 1;
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char temp[100];
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int index = 0;
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int length = 0; /* |<-------->| */
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struct timeval tv;
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struct tm tm;
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int i = 0;
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int n_acc = 0;
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const uint16_t *accept = NULL;
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uint16_t a_ctype = REST.type.APPLICATION_JSON; /* for now json is default */
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/* Looks like accepted content-type isn't currently supported */
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n_acc = REST.get_header_accept (request, &accept);
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for (i=0; i<n_acc; i++) {
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if ( accept [i] == REST.type.TEXT_PLAIN
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|| accept [i] == REST.type.APPLICATION_JSON
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)
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{
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a_ctype = accept [i];
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break;
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}
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}
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switch(REST.get_method_type(request)){
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case METHOD_GET:
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gettimeofday (&tv, NULL);
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method (&tv.tv_sec, &tm);
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if (a_ctype == REST.type.TEXT_PLAIN) {
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index += sprintf
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( temp + index
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, "%lu-%02u-%02u %02u:%02u:%02u\n"
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, 1900 + tm.tm_year
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, tm.tm_mon, tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec
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);
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} else { // jSON Format
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index += sprintf
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( temp + index
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,"{\n \"localtime\" : \"%lu-%02u-%02u %02u:%02u:%02u\"\n"
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, 1900 + tm.tm_year
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, tm.tm_mon, tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec
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);
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index += sprintf(temp + index,"}\n");
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}
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length = strlen(temp);
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memcpy (buffer, temp, length);
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REST.set_header_content_type (response, REST.type.APPLICATION_JSON);
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REST.set_response_payload (response, buffer, length);
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break;
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default:
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success = 0;
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}
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if (!success) {
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REST.set_response_status(response, REST.status.BAD_REQUEST);
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}
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}
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void
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localtime_handler
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( void* request
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, void* response
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, uint8_t *buffer
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, uint16_t preferred_size
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, int32_t *offset
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)
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{
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return time_handler
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(request, response, buffer, preferred_size, offset, &localtime_r);
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}
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void
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gmtime_handler
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( void* request
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, void* response
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, uint8_t *buffer
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, uint16_t preferred_size
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, int32_t *offset
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)
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{
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return time_handler
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(request, response, buffer, preferred_size, offset, &gmtime_r);
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}
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