osd-contiki/examples/er-rest-example/resources/res-plugtest-multi.c

/*
 * Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the Institute nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * This file is part of the Contiki operating system.
 */

/**
 * \file
 *      ETSI Plugtest resource
 * \author
 *      Matthias Kovatsch <kovatsch@inf.ethz.ch>
 */

#include <string.h>
#include "rest-engine.h"
#include "er-coap.h"
#include "er-plugtest.h"

static void res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset);

RESOURCE(res_plugtest_multi,
         "title=\"Resource providing text/plain and application/xml\";ct=\"0 41\"",
         res_get_handler,
         NULL,
         NULL,
         NULL);

static void
res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
  coap_packet_t *const coap_req = (coap_packet_t *)request;

  unsigned int accept = -1;
  REST.get_header_accept(request, &accept);

  PRINTF("/multi-format   GET (%s %u) ", coap_req->type == COAP_TYPE_CON ? "CON" : "NON", coap_req->mid);

  if(accept == -1 || accept == REST.type.TEXT_PLAIN) {
    REST.set_header_content_type(response, REST.type.TEXT_PLAIN);
    REST.set_response_payload(
      response,
      buffer,
      snprintf((char *)buffer, MAX_PLUGFEST_PAYLOAD,
               "Type: %u\nCode: %u\nMID: %u%s", coap_req->type, coap_req->code,
               coap_req->mid, accept != -1 ? "\nAccept: 0" : ""));
    PRINTF("PLAIN\n");
  } else if(accept == REST.type.APPLICATION_XML) {
    REST.set_header_content_type(response, REST.type.APPLICATION_XML);
    REST.set_response_payload(
      response,
      buffer,
      snprintf((char *)buffer, MAX_PLUGFEST_PAYLOAD,
               "<status type=\"%u\" code=\"%u\" mid=\"%u\" accept=\"%u\"/>",
               coap_req->type, coap_req->code, coap_req->mid, accept));
    PRINTF("XML\n");
  } else {
    REST.set_response_status(response, REST.status.NOT_ACCEPTABLE);
    const char *msg = "Supporting content-types text/plain and application/xml";
    REST.set_response_payload(response, msg, strlen(msg));
    PRINTF("ERROR\n");
  }
}