1064 lines
38 KiB
C
1064 lines
38 KiB
C
/*
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* Copyright (c) 2011, Matthias Kovatsch and other contributors.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* This file is part of the Contiki operating system.
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*/
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/**
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* \file
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* Erbium (Er) REST Engine example (with CoAP-specific code)
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* \author
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* Matthias Kovatsch <kovatsch@inf.ethz.ch>
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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 "contiki-net.h"
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/* Define which resources to include to meet memory constraints. */
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#define REST_RES_INFO 1
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#define REST_RES_DS1820 0
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#define REST_RES_HELLO 0
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#define REST_RES_MIRROR 0 /* causes largest code size */
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#define REST_RES_CHUNKS 0
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#define REST_RES_SEPARATE 0
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#define REST_RES_PUSHING 0
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#define REST_RES_EVENT 0
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#define REST_RES_SUB 0
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#define REST_RES_LEDS 0
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#define REST_RES_TOGGLE 0
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#define REST_RES_LIGHT 0
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#define REST_RES_BATTERY 0
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#define REST_RES_RADIO 0
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// todo OSD-Testboard move to platform/dev
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#include "dev/led.h"
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#if REST_RES_DS1820
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#include "dev/ds1820.h"
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#endif
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#if defined (PLATFORM_HAS_BUTTON)
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#include "dev/button-sensor.h"
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#endif
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#if defined (PLATFORM_HAS_LEDS)
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#include "dev/leds.h"
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#endif
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#if defined (PLATFORM_HAS_LIGHT)
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#include "dev/light-sensor.h"
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#endif
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#if defined (PLATFORM_HAS_BATTERY)
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#include "dev/battery-sensor.h"
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#endif
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#if defined (PLATFORM_HAS_SHT11)
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#include "dev/sht11-sensor.h"
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#endif
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#if defined (PLATFORM_HAS_RADIO)
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#include "dev/radio-sensor.h"
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#endif
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#include "relay.h"
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#define DEBUG 0
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#if DEBUG
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#define PRINTF(...) printf(__VA_ARGS__)
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#define PRINT6ADDR(addr) PRINTF("[%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x]", ((uint8_t *)addr)[0], ((uint8_t *)addr)[1], ((uint8_t *)addr)[2], ((uint8_t *)addr)[3], ((uint8_t *)addr)[4], ((uint8_t *)addr)[5], ((uint8_t *)addr)[6], ((uint8_t *)addr)[7], ((uint8_t *)addr)[8], ((uint8_t *)addr)[9], ((uint8_t *)addr)[10], ((uint8_t *)addr)[11], ((uint8_t *)addr)[12], ((uint8_t *)addr)[13], ((uint8_t *)addr)[14], ((uint8_t *)addr)[15])
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#define PRINTLLADDR(lladdr) PRINTF("[%02x:%02x:%02x:%02x:%02x:%02x]",(lladdr)->addr[0], (lladdr)->addr[1], (lladdr)->addr[2], (lladdr)->addr[3],(lladdr)->addr[4], (lladdr)->addr[5])
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#else
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#define PRINTF(...)
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#define PRINT6ADDR(addr)
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#define PRINTLLADDR(addr)
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#endif
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// todo: move platform /dev
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#include "dev/led.c"
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#if REST_RES_DS1820
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#include "dev/ds1820.c"
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#endif
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#include "relay.h"
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#include "relay.c"
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/******************************************************************************/
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#if REST_RES_INFO
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/*
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* Resources are defined by the RESOURCE macro.
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* Signature: resource name, the RESTful methods it handles, and its URI path (omitting the leading slash).
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*/
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RESOURCE(info, METHOD_GET, "info", "title=\"Info\";rt=\"Text\"");
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/*
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* A handler function named [resource name]_handler must be implemented for each RESOURCE.
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* A buffer for the response payload is provided through the buffer pointer. Simple resources can ignore
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* preferred_size and offset, but must respect the REST_MAX_CHUNK_SIZE limit for the buffer.
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* If a smaller block size is requested for CoAP, the REST framework automatically splits the data.
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*/
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void
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info_handler(void* request, void* response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
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{
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char message[100];
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int index = 0;
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int length = 0; /* |<-------->| */
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/* Some data that has the length up to REST_MAX_CHUNK_SIZE. For more, see the chunk resource. */
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// jSON Format
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index += sprintf(message + index,"{\n \"version\" : \"V0.3\",\n");
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index += sprintf(message + index," \"name\" : \"wireless-plug\"\n");
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index += sprintf(message + index,"}\n");
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length = strlen(message);
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memcpy(buffer, message,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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}
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#endif
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/*A simple actuator example, post variable mode, relay is activated or deactivated*/
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RESOURCE(plug1, METHOD_GET | METHOD_PUT , "plug1", "title=\"plug1\";rt=\"Text\"");
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void
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plug1_handler(void* request, void* response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
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{
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char mode[10];
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static uint8_t relay1 = 0;
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static char name[17]="plug1";
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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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size_t len = 0;
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const char *pmode = NULL;
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const char *pname = NULL;
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switch(REST.get_method_type(request)){
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case METHOD_GET:
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// jSON Format
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index += sprintf(temp + index,"{\n \"name\" : \"%s\",\n",name);
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if(relay1 == 0)
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index += sprintf(temp + index," \"mode\" : \"off\"\n");
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if(relay1 == 1)
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index += sprintf(temp + index," \"mode\" : \"on\"\n");
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index += sprintf(temp + index,"}\n");
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len = strlen(temp);
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memcpy(buffer, temp,len );
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REST.set_header_content_type(response, REST.type.APPLICATION_JSON);
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REST.set_response_payload(response, buffer, len);
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break;
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case METHOD_POST:
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success = 0;
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break;
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case METHOD_PUT:
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if (success && (len=REST.get_post_variable(request, "mode", &pmode))) {
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PRINTF("name %s\n", mode);
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memcpy(mode, pmode,len);
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mode[len]=0;
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if (!strcmp(mode, "on")) {
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relay1_on();
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relay1 = 1;
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} else if (!strcmp(mode, "off")) {
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relay1_off();
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relay1 = 0;
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} else {
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success = 0;
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}
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} else if (success && (len=REST.get_post_variable(request, "name", &pname))) {
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PRINTF("name %s\n", name);
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memcpy(name, pname,len);
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name[len]=0;
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} else {
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success = 0;
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}
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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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#if REST_RES_DS1820
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/*A simple getter example. Returns the reading from ds1820 sensor*/
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RESOURCE(ds1820, METHOD_GET, "DS1820", "title=\"Temperatur\";rt=\"Temperatur\"");
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void
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ds1820_handler(void* request, void* response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
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{
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char message[100];
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int length = 0; /* |<-------->| */
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int ret=0;
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int grad=0;
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int kgrad=0;
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// ret=ds1820_temp();
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if(ds1820_ok[0] & 0x01){
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kgrad=5;
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}
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grad = (int)((ds1820_ok[1] << 8) | (ds1820_ok[0])) >> 1;
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uint16_t *accept = NULL;
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int num = REST.get_header_accept(request, &accept);
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if ((num==0) || (num && accept[0]==REST.type.TEXT_PLAIN))
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{
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REST.set_header_content_type(response, REST.type.TEXT_PLAIN);
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snprintf(message, REST_MAX_CHUNK_SIZE, "%2d.%d °C",grad,kgrad);
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length = strlen(message);
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memcpy(buffer, message,length );
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REST.set_response_payload(response, buffer, length);
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}
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else if (num && (accept[0]==REST.type.APPLICATION_JSON))
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{
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REST.set_header_content_type(response, REST.type.APPLICATION_JSON);
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snprintf(message, REST_MAX_CHUNK_SIZE, "{\"temp\":\"%d.%d °C\"}",grad,kgrad);
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length = strlen(message);
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memcpy(buffer, message,length );
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REST.set_response_payload(response, buffer, length);
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}
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else
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{
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REST.set_response_status(response, REST.status.UNSUPPORTED_MEDIA_TYPE);
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REST.set_response_payload(response, (uint8_t *)"Supporting content-types text/plain and application/json", 56);
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}
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}
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#endif //REST_RES_DS1820
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#if REST_RES_HELLO
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/*
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* Resources are defined by the RESOURCE macro.
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* Signature: resource name, the RESTful methods it handles, and its URI path (omitting the leading slash).
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*/
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RESOURCE(helloworld, METHOD_GET, "hello", "title=\"Hello world: ?len=0..\";rt=\"Text\"");
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/*
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* A handler function named [resource name]_handler must be implemented for each RESOURCE.
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* A buffer for the response payload is provided through the buffer pointer. Simple resources can ignore
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* preferred_size and offset, but must respect the REST_MAX_CHUNK_SIZE limit for the buffer.
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* If a smaller block size is requested for CoAP, the REST framework automatically splits the data.
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*/
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void
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helloworld_handler(void* request, void* response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
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{
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const char *len = NULL;
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/* Some data that has the length up to REST_MAX_CHUNK_SIZE. For more, see the chunk resource. */
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char const * const message = "Hello World! ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxy";
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int length = 12; /* |<-------->| */
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/* The query string can be retrieved by rest_get_query() or parsed for its key-value pairs. */
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if (REST.get_query_variable(request, "len", &len)) {
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length = atoi(len);
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if (length<0) length = 0;
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if (length>REST_MAX_CHUNK_SIZE) length = REST_MAX_CHUNK_SIZE;
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memcpy(buffer, message, length);
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} else {
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memcpy(buffer, message, length);
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}
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REST.set_header_content_type(response, REST.type.TEXT_PLAIN); /* text/plain is the default, hence this option could be omitted. */
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REST.set_header_etag(response, (uint8_t *) &length, 1);
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REST.set_response_payload(response, buffer, length);
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}
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#endif
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/******************************************************************************/
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#if REST_RES_MIRROR
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/* This resource mirrors the incoming request. It shows how to access the options and how to set them for the response. */
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RESOURCE(mirror, METHOD_GET | METHOD_POST | METHOD_PUT | METHOD_DELETE, "debug/mirror", "title=\"Returns your decoded message\";rt=\"Debug\"");
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void
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mirror_handler(void* request, void* response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
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{
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/* The ETag and Token is copied to the header. */
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uint8_t opaque[] = {0x0A, 0xBC, 0xDE};
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/* Strings are not copied, so use static string buffers or strings in .text memory (char *str = "string in .text";). */
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static char location[] = {'/','f','/','a','?','k','&','e', 0};
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/* Getter for the header option Content-Type. If the option is not set, text/plain is returned by default. */
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unsigned int content_type = REST.get_header_content_type(request);
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/* The other getters copy the value (or string/array pointer) to the given pointers and return 1 for success or the length of strings/arrays. */
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uint32_t max_age = 0;
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const char *str = NULL;
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uint32_t observe = 0;
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const uint8_t *bytes = NULL;
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uint32_t block_num = 0;
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uint8_t block_more = 0;
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uint16_t block_size = 0;
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const char *query = "";
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int len = 0;
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/* Mirror the received header options in the response payload. Unsupported getters (e.g., rest_get_header_observe() with HTTP) will return 0. */
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int strpos = 0;
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/* snprintf() counts the terminating '\0' to the size parameter.
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* The additional byte is taken care of by allocating REST_MAX_CHUNK_SIZE+1 bytes in the REST framework.
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* Add +1 to fill the complete buffer. */
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strpos += snprintf((char *)buffer, REST_MAX_CHUNK_SIZE+1, "CT %u\n", content_type);
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/* Some getters such as for ETag or Location are omitted, as these options should not appear in a request.
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* Max-Age might appear in HTTP requests or used for special purposes in CoAP. */
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if (strpos<=REST_MAX_CHUNK_SIZE && REST.get_header_max_age(request, &max_age))
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{
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strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "MA %lu\n", max_age);
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}
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if (strpos<=REST_MAX_CHUNK_SIZE && (len = REST.get_header_host(request, &str)))
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{
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strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "UH %.*s\n", len, str);
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}
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/* CoAP-specific example: actions not required for normal RESTful Web service. */
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#if WITH_COAP > 1
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if (strpos<=REST_MAX_CHUNK_SIZE && coap_get_header_observe(request, &observe))
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{
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strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "Ob %lu\n", observe);
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}
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if (strpos<=REST_MAX_CHUNK_SIZE && (len = coap_get_header_token(request, &bytes)))
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{
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strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "To 0x");
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int index = 0;
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for (index = 0; index<len; ++index) {
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strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "%02X", bytes[index]);
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}
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strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "\n");
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}
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if (strpos<=REST_MAX_CHUNK_SIZE && (len = coap_get_header_etag(request, &bytes)))
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{
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strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "ET 0x");
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int index = 0;
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for (index = 0; index<len; ++index) {
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strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "%02X", bytes[index]);
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}
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strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "\n");
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}
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if (strpos<=REST_MAX_CHUNK_SIZE && (len = coap_get_header_uri_path(request, &str)))
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{
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strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "UP ");
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strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "%.*s\n", len, str);
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}
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#if WITH_COAP == 3
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if (strpos<=REST_MAX_CHUNK_SIZE && (len = coap_get_header_location(request, &str)))
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{
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strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "Lo %.*s\n", len, str);
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}
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if (strpos<=REST_MAX_CHUNK_SIZE && coap_get_header_block(request, &block_num, &block_more, &block_size, NULL)) /* This getter allows NULL pointers to get only a subset of the block parameters. */
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{
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strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "Bl %lu%s (%u)\n", block_num, block_more ? "+" : "", block_size);
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}
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#else
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if (strpos<=REST_MAX_CHUNK_SIZE && (len = coap_get_header_location_path(request, &str)))
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{
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strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "LP %.*s\n", len, str);
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}
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if (strpos<=REST_MAX_CHUNK_SIZE && (len = coap_get_header_location_query(request, &str)))
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{
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strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "LQ %.*s\n", len, str);
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}
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if (strpos<=REST_MAX_CHUNK_SIZE && coap_get_header_block2(request, &block_num, &block_more, &block_size, NULL)) /* This getter allows NULL pointers to get only a subset of the block parameters. */
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{
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strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "B2 %lu%s (%u)\n", block_num, block_more ? "+" : "", block_size);
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}
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/*
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* Critical Block1 option is currently rejected by engine.
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*
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if (strpos<=REST_MAX_CHUNK_SIZE && coap_get_header_block1(request, &block_num, &block_more, &block_size, NULL))
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{
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strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "B1 %lu%s (%u)\n", block_num, block_more ? "+" : "", block_size);
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}
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*/
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#endif /* CoAP > 03 */
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#endif /* CoAP-specific example */
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if (strpos<=REST_MAX_CHUNK_SIZE && (len = REST.get_query(request, &query)))
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{
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strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "Qu %.*s\n", len, query);
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}
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if (strpos<=REST_MAX_CHUNK_SIZE && (len = REST.get_request_payload(request, &bytes)))
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{
|
|
strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "%.*s", len, bytes);
|
|
}
|
|
|
|
if (strpos >= REST_MAX_CHUNK_SIZE)
|
|
{
|
|
buffer[REST_MAX_CHUNK_SIZE-1] = 0xBB; /* '»' to indicate truncation */
|
|
}
|
|
|
|
REST.set_response_payload(response, buffer, strpos);
|
|
|
|
PRINTF("/mirror options received: %s\n", buffer);
|
|
|
|
/* Set dummy header options for response. Like getters, some setters are not implemented for HTTP and have no effect. */
|
|
REST.set_header_content_type(response, REST.type.TEXT_PLAIN);
|
|
REST.set_header_max_age(response, 10); /* For HTTP, browsers will not re-request the page for 10 seconds. CoAP action depends on the client. */
|
|
REST.set_header_etag(response, opaque, 2);
|
|
REST.set_header_location(response, location); /* Initial slash is omitted by framework */
|
|
|
|
/* CoAP-specific example: actions not required for normal RESTful Web service. */
|
|
#if WITH_COAP > 1
|
|
coap_set_header_uri_host(response, "tiki");
|
|
coap_set_header_observe(response, 10);
|
|
#if WITH_COAP == 3
|
|
coap_set_header_block(response, 42, 0, 64); /* The block option might be overwritten by the framework when blockwise transfer is requested. */
|
|
#else
|
|
coap_set_header_proxy_uri(response, "ftp://x");
|
|
coap_set_header_block2(response, 42, 0, 64); /* The block option might be overwritten by the framework when blockwise transfer is requested. */
|
|
coap_set_header_block1(response, 23, 0, 16);
|
|
coap_set_header_accept(response, TEXT_PLAIN);
|
|
coap_set_header_if_none_match(response);
|
|
#endif /* CoAP > 03 */
|
|
#endif /* CoAP-specific example */
|
|
}
|
|
#endif /* REST_RES_MIRROR */
|
|
|
|
/******************************************************************************/
|
|
#if REST_RES_CHUNKS
|
|
/*
|
|
* For data larger than REST_MAX_CHUNK_SIZE (e.g., stored in flash) resources must be aware of the buffer limitation
|
|
* and split their responses by themselves. To transfer the complete resource through a TCP stream or CoAP's blockwise transfer,
|
|
* the byte offset where to continue is provided to the handler as int32_t pointer.
|
|
* These chunk-wise resources must set the offset value to its new position or -1 of the end is reached.
|
|
* (The offset for CoAP's blockwise transfer can go up to 2'147'481'600 = ~2047 M for block size 2048 (reduced to 1024 in observe-03.)
|
|
*/
|
|
RESOURCE(chunks, METHOD_GET, "test/chunks", "title=\"Blockwise demo\";rt=\"Data\"");
|
|
|
|
#define CHUNKS_TOTAL 2050
|
|
|
|
void
|
|
chunks_handler(void* request, void* response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
|
|
{
|
|
int32_t strpos = 0;
|
|
|
|
/* Check the offset for boundaries of the resource data. */
|
|
if (*offset>=CHUNKS_TOTAL)
|
|
{
|
|
REST.set_response_status(response, REST.status.BAD_OPTION);
|
|
/* A block error message should not exceed the minimum block size (16). */
|
|
|
|
const char *error_msg = "BlockOutOfScope";
|
|
REST.set_response_payload(response, error_msg, strlen(error_msg));
|
|
return;
|
|
}
|
|
|
|
/* Generate data until reaching CHUNKS_TOTAL. */
|
|
while (strpos<preferred_size)
|
|
{
|
|
strpos += snprintf((char *)buffer+strpos, preferred_size-strpos+1, "|%ld|", *offset);
|
|
}
|
|
|
|
/* snprintf() does not adjust return value if truncated by size. */
|
|
if (strpos > preferred_size)
|
|
{
|
|
strpos = preferred_size;
|
|
}
|
|
|
|
/* Truncate if above CHUNKS_TOTAL bytes. */
|
|
if (*offset+(int32_t)strpos > CHUNKS_TOTAL)
|
|
{
|
|
strpos = CHUNKS_TOTAL - *offset;
|
|
}
|
|
|
|
REST.set_response_payload(response, buffer, strpos);
|
|
|
|
/* IMPORTANT for chunk-wise resources: Signal chunk awareness to REST engine. */
|
|
*offset += strpos;
|
|
|
|
/* Signal end of resource representation. */
|
|
if (*offset>=CHUNKS_TOTAL)
|
|
{
|
|
*offset = -1;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/******************************************************************************/
|
|
#if REST_RES_SEPARATE && defined (PLATFORM_HAS_BUTTON) && WITH_COAP > 3
|
|
/* Required to manually (=not by the engine) handle the response transaction. */
|
|
#include "er-coap-07-separate.h"
|
|
#include "er-coap-07-transactions.h"
|
|
/*
|
|
* CoAP-specific example for separate responses.
|
|
* Note the call "rest_set_pre_handler(&resource_separate, coap_separate_handler);" in the main process.
|
|
* The pre-handler takes care of the empty ACK and updates the MID and message type for CON requests.
|
|
* The resource handler must store all information that required to finalize the response later.
|
|
*/
|
|
RESOURCE(separate, METHOD_GET, "test/separate", "title=\"Separate demo\"");
|
|
|
|
/* A structure to store the required information */
|
|
typedef struct application_separate_store {
|
|
/* Provided by Erbium to store generic request information such as remote address and token. */
|
|
coap_separate_t request_metadata;
|
|
/* Add fields for addition information to be stored for finalizing, e.g.: */
|
|
char buffer[16];
|
|
} application_separate_store_t;
|
|
|
|
static uint8_t separate_active = 0;
|
|
static application_separate_store_t separate_store[1];
|
|
|
|
void
|
|
separate_handler(void* request, void* response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
|
|
{
|
|
/*
|
|
* Example allows only one open separate response.
|
|
* For multiple, the application must manage the list of stores.
|
|
*/
|
|
if (separate_active)
|
|
{
|
|
coap_separate_reject();
|
|
}
|
|
else
|
|
{
|
|
separate_active = 1;
|
|
|
|
/* Take over and skip response by engine. */
|
|
coap_separate_accept(request, &separate_store->request_metadata);
|
|
/* Be aware to respect the Block2 option, which is also stored in the coap_separate_t. */
|
|
|
|
/*
|
|
* At the moment, only the minimal information is stored in the store (client address, port, token, MID, type, and Block2).
|
|
* Extend the store, if the application requires additional information from this handler.
|
|
* buffer is an example field for custom information.
|
|
*/
|
|
snprintf(separate_store->buffer, sizeof(separate_store->buffer), "StoredInfo");
|
|
}
|
|
}
|
|
|
|
void
|
|
separate_finalize_handler()
|
|
{
|
|
if (separate_active)
|
|
{
|
|
coap_transaction_t *transaction = NULL;
|
|
if ( (transaction = coap_new_transaction(separate_store->request_metadata.mid, &separate_store->request_metadata.addr, separate_store->request_metadata.port)) )
|
|
{
|
|
coap_packet_t response[1]; /* This way the packet can be treated as pointer as usual. */
|
|
|
|
/* Restore the request information for the response. */
|
|
coap_separate_resume(response, &separate_store->request_metadata, CONTENT_2_05);
|
|
|
|
coap_set_payload(response, separate_store->buffer, strlen(separate_store->buffer));
|
|
|
|
/*
|
|
* Be aware to respect the Block2 option, which is also stored in the coap_separate_t.
|
|
* As it is a critical option, this example resource pretends to handle it for compliance.
|
|
*/
|
|
coap_set_header_block2(response, separate_store->request_metadata.block2_num, 0, separate_store->request_metadata.block2_size);
|
|
|
|
/* Warning: No check for serialization error. */
|
|
transaction->packet_len = coap_serialize_message(response, transaction->packet);
|
|
coap_send_transaction(transaction);
|
|
/* The engine will clear the transaction (right after send for NON, after acked for CON). */
|
|
|
|
separate_active = 0;
|
|
}
|
|
else
|
|
{
|
|
/*
|
|
* Set timer for retry, send error message, ...
|
|
* The example simply waits for another button press.
|
|
*/
|
|
}
|
|
} /* if (separate_active) */
|
|
}
|
|
#endif
|
|
|
|
/******************************************************************************/
|
|
#if REST_RES_PUSHING
|
|
/*
|
|
* Example for a periodic resource.
|
|
* It takes an additional period parameter, which defines the interval to call [name]_periodic_handler().
|
|
* A default post_handler takes care of subscriptions by managing a list of subscribers to notify.
|
|
*/
|
|
PERIODIC_RESOURCE(pushing, METHOD_GET, "test/push", "title=\"Periodic demo\";obs", 5*CLOCK_SECOND);
|
|
|
|
void
|
|
pushing_handler(void* request, void* response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
|
|
{
|
|
REST.set_header_content_type(response, REST.type.TEXT_PLAIN);
|
|
|
|
/* Usually, a CoAP server would response with the resource representation matching the periodic_handler. */
|
|
const char *msg = "It's periodic!";
|
|
REST.set_response_payload(response, msg, strlen(msg));
|
|
|
|
/* A post_handler that handles subscriptions will be called for periodic resources by the REST framework. */
|
|
}
|
|
|
|
/*
|
|
* Additionally, a handler function named [resource name]_handler must be implemented for each PERIODIC_RESOURCE.
|
|
* It will be called by the REST manager process with the defined period.
|
|
*/
|
|
void
|
|
pushing_periodic_handler(resource_t *r)
|
|
{
|
|
static uint16_t obs_counter = 0;
|
|
static char content[11];
|
|
|
|
++obs_counter;
|
|
|
|
PRINTF("TICK %u for /%s\n", obs_counter, r->url);
|
|
|
|
/* Build notification. */
|
|
coap_packet_t notification[1]; /* This way the packet can be treated as pointer as usual. */
|
|
coap_init_message(notification, COAP_TYPE_NON, CONTENT_2_05, 0 );
|
|
coap_set_payload(notification, content, snprintf(content, sizeof(content), "TICK %u", obs_counter));
|
|
|
|
/* Notify the registered observers with the given message type, observe option, and payload. */
|
|
REST.notify_subscribers(r, obs_counter, notification);
|
|
}
|
|
#endif
|
|
|
|
/******************************************************************************/
|
|
#if REST_RES_EVENT && defined (PLATFORM_HAS_BUTTON)
|
|
/*
|
|
* Example for an event resource.
|
|
* Additionally takes a period parameter that defines the interval to call [name]_periodic_handler().
|
|
* A default post_handler takes care of subscriptions and manages a list of subscribers to notify.
|
|
*/
|
|
EVENT_RESOURCE(event, METHOD_GET, "sensors/button", "title=\"Event demo\";obs");
|
|
|
|
void
|
|
event_handler(void* request, void* response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
|
|
{
|
|
REST.set_header_content_type(response, REST.type.TEXT_PLAIN);
|
|
/* Usually, a CoAP server would response with the current resource representation. */
|
|
const char *msg = "It's eventful!";
|
|
REST.set_response_payload(response, (uint8_t *)msg, strlen(msg));
|
|
|
|
/* A post_handler that handles subscriptions/observing will be called for periodic resources by the framework. */
|
|
}
|
|
|
|
/* Additionally, a handler function named [resource name]_event_handler must be implemented for each PERIODIC_RESOURCE defined.
|
|
* It will be called by the REST manager process with the defined period. */
|
|
void
|
|
event_event_handler(resource_t *r)
|
|
{
|
|
static uint16_t event_counter = 0;
|
|
static char content[12];
|
|
|
|
++event_counter;
|
|
|
|
PRINTF("TICK %u for /%s\n", event_counter, r->url);
|
|
|
|
/* Build notification. */
|
|
coap_packet_t notification[1]; /* This way the packet can be treated as pointer as usual. */
|
|
coap_init_message(notification, COAP_TYPE_CON, CONTENT_2_05, 0 );
|
|
coap_set_payload(notification, content, snprintf(content, sizeof(content), "EVENT %u", event_counter));
|
|
|
|
/* Notify the registered observers with the given message type, observe option, and payload. */
|
|
REST.notify_subscribers(r, event_counter, notification);
|
|
}
|
|
#endif /* PLATFORM_HAS_BUTTON */
|
|
|
|
/******************************************************************************/
|
|
#if REST_RES_SUB
|
|
/*
|
|
* Example for a resource that also handles all its sub-resources.
|
|
* Use REST.get_url() to multiplex the handling of the request depending on the Uri-Path.
|
|
*/
|
|
RESOURCE(sub, METHOD_GET | HAS_SUB_RESOURCES, "test/path", "title=\"Sub-resource demo\"");
|
|
|
|
void
|
|
sub_handler(void* request, void* response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
|
|
{
|
|
REST.set_header_content_type(response, REST.type.TEXT_PLAIN);
|
|
|
|
const char *uri_path = NULL;
|
|
int len = REST.get_url(request, &uri_path);
|
|
int base_len = strlen(resource_sub.url);
|
|
|
|
if (len==base_len)
|
|
{
|
|
snprintf((char *)buffer, REST_MAX_CHUNK_SIZE, "Request any sub-resource of /%s", resource_sub.url);
|
|
}
|
|
else
|
|
{
|
|
snprintf((char *)buffer, REST_MAX_CHUNK_SIZE, ".%s", uri_path+base_len);
|
|
}
|
|
|
|
REST.set_response_payload(response, buffer, strlen((char *)buffer));
|
|
}
|
|
#endif
|
|
|
|
/******************************************************************************/
|
|
#if defined (PLATFORM_HAS_LEDS)
|
|
/******************************************************************************/
|
|
#if REST_RES_LEDS
|
|
/*A simple actuator example, depending on the color query parameter and post variable mode, corresponding led is activated or deactivated*/
|
|
RESOURCE(leds, METHOD_POST | METHOD_PUT , "actuators/leds", "title=\"LEDs: ?color=r|g|b, POST/PUT mode=on|off\";rt=\"Control\"");
|
|
|
|
void
|
|
leds_handler(void* request, void* response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
|
|
{
|
|
size_t len = 0;
|
|
const char *color = NULL;
|
|
const char *mode = NULL;
|
|
uint8_t led = 0;
|
|
int success = 1;
|
|
|
|
if ((len=REST.get_query_variable(request, "color", &color))) {
|
|
PRINTF("color %.*s\n", len, color);
|
|
|
|
if (strncmp(color, "r", len)==0) {
|
|
led = LEDS_RED;
|
|
} else if(strncmp(color,"g", len)==0) {
|
|
led = LEDS_GREEN;
|
|
} else if (strncmp(color,"b", len)==0) {
|
|
led = LEDS_BLUE;
|
|
} else {
|
|
success = 0;
|
|
}
|
|
} else {
|
|
success = 0;
|
|
}
|
|
|
|
if (success && (len=REST.get_post_variable(request, "mode", &mode))) {
|
|
PRINTF("mode %s\n", mode);
|
|
|
|
if (strncmp(mode, "on", len)==0) {
|
|
leds_on(led);
|
|
} else if (strncmp(mode, "off", len)==0) {
|
|
leds_off(led);
|
|
} else {
|
|
success = 0;
|
|
}
|
|
} else {
|
|
success = 0;
|
|
}
|
|
|
|
if (!success) {
|
|
REST.set_response_status(response, REST.status.BAD_REQUEST);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/******************************************************************************/
|
|
#if REST_RES_TOGGLE
|
|
/* A simple actuator example. Toggles the red led */
|
|
RESOURCE(toggle, METHOD_GET | METHOD_PUT | METHOD_POST, "actuators/toggle", "title=\"Red LED\";rt=\"Control\"");
|
|
void
|
|
toggle_handler(void* request, void* response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
|
|
{
|
|
leds_toggle(LEDS_RED);
|
|
}
|
|
#endif
|
|
#endif /* PLATFORM_HAS_LEDS */
|
|
|
|
/******************************************************************************/
|
|
#if REST_RES_LIGHT && defined (PLATFORM_HAS_LIGHT)
|
|
/* A simple getter example. Returns the reading from light sensor with a simple etag */
|
|
RESOURCE(light, METHOD_GET, "sensors/light", "title=\"Photosynthetic and solar light (supports JSON)\";rt=\"LightSensor\"");
|
|
void
|
|
light_handler(void* request, void* response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
|
|
{
|
|
uint16_t light_photosynthetic = light_sensor.value(LIGHT_SENSOR_PHOTOSYNTHETIC);
|
|
uint16_t light_solar = light_sensor.value(LIGHT_SENSOR_TOTAL_SOLAR);
|
|
|
|
const uint16_t *accept = NULL;
|
|
int num = REST.get_header_accept(request, &accept);
|
|
|
|
if ((num==0) || (num && accept[0]==REST.type.TEXT_PLAIN))
|
|
{
|
|
REST.set_header_content_type(response, REST.type.TEXT_PLAIN);
|
|
snprintf((char *)buffer, REST_MAX_CHUNK_SIZE, "%u;%u", light_photosynthetic, light_solar);
|
|
|
|
REST.set_response_payload(response, (uint8_t *)buffer, strlen((char *)buffer));
|
|
}
|
|
else if (num && (accept[0]==REST.type.APPLICATION_XML))
|
|
{
|
|
REST.set_header_content_type(response, REST.type.APPLICATION_XML);
|
|
snprintf((char *)buffer, REST_MAX_CHUNK_SIZE, "<light photosynthetic=\"%u\" solar=\"%u\"/>", light_photosynthetic, light_solar);
|
|
|
|
REST.set_response_payload(response, buffer, strlen((char *)buffer));
|
|
}
|
|
else if (num && (accept[0]==REST.type.APPLICATION_JSON))
|
|
{
|
|
REST.set_header_content_type(response, REST.type.APPLICATION_JSON);
|
|
snprintf((char *)buffer, REST_MAX_CHUNK_SIZE, "{'light':{'photosynthetic':%u,'solar':%u}}", light_photosynthetic, light_solar);
|
|
|
|
REST.set_response_payload(response, buffer, strlen((char *)buffer));
|
|
}
|
|
else
|
|
{
|
|
REST.set_response_status(response, REST.status.UNSUPPORTED_MEDIA_TYPE);
|
|
const char *msg = "Supporting content-types text/plain, application/xml, and application/json";
|
|
REST.set_response_payload(response, msg, strlen(msg));
|
|
}
|
|
}
|
|
#endif /* PLATFORM_HAS_LIGHT */
|
|
|
|
/******************************************************************************/
|
|
#if REST_RES_BATTERY && defined (PLATFORM_HAS_BATTERY)
|
|
/* A simple getter example. Returns the reading from light sensor with a simple etag */
|
|
RESOURCE(battery, METHOD_GET, "sensors/battery", "title=\"Battery status\";rt=\"Battery\"");
|
|
void
|
|
battery_handler(void* request, void* response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
|
|
{
|
|
int battery = battery_sensor.value(0);
|
|
|
|
const uint16_t *accept = NULL;
|
|
int num = REST.get_header_accept(request, &accept);
|
|
|
|
if ((num==0) || (num && accept[0]==REST.type.TEXT_PLAIN))
|
|
{
|
|
REST.set_header_content_type(response, REST.type.TEXT_PLAIN);
|
|
snprintf((char *)buffer, REST_MAX_CHUNK_SIZE, "%d", battery);
|
|
|
|
REST.set_response_payload(response, (uint8_t *)buffer, strlen((char *)buffer));
|
|
}
|
|
else if (num && (accept[0]==REST.type.APPLICATION_JSON))
|
|
{
|
|
REST.set_header_content_type(response, REST.type.APPLICATION_JSON);
|
|
snprintf((char *)buffer, REST_MAX_CHUNK_SIZE, "{'battery':%d}", battery);
|
|
|
|
REST.set_response_payload(response, buffer, strlen((char *)buffer));
|
|
}
|
|
else
|
|
{
|
|
REST.set_response_status(response, REST.status.UNSUPPORTED_MEDIA_TYPE);
|
|
const char *msg = "Supporting content-types text/plain and application/json";
|
|
REST.set_response_payload(response, msg, strlen(msg));
|
|
}
|
|
}
|
|
#endif /* PLATFORM_HAS_BATTERY */
|
|
|
|
|
|
#if defined (PLATFORM_HAS_RADIO) && REST_RES_RADIO
|
|
/* A simple getter example. Returns the reading of the rssi/lqi from radio sensor */
|
|
RESOURCE(radio, METHOD_GET, "sensor/radio", "title=\"RADIO: ?p=lqi|rssi\";rt=\"RadioSensor\"");
|
|
|
|
void
|
|
radio_handler(void* request, void* response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
|
|
{
|
|
size_t len = 0;
|
|
const char *p = NULL;
|
|
uint8_t param = 0;
|
|
int success = 1;
|
|
|
|
const uint16_t *accept = NULL;
|
|
int num = REST.get_header_accept(request, &accept);
|
|
|
|
if ((len=REST.get_query_variable(request, "p", &p))) {
|
|
PRINTF("p %.*s\n", len, p);
|
|
if (strncmp(p, "lqi", len)==0) {
|
|
param = RADIO_SENSOR_LAST_VALUE;
|
|
} else if(strncmp(p,"rssi", len)==0) {
|
|
param = RADIO_SENSOR_LAST_PACKET;
|
|
} else {
|
|
success = 0;
|
|
}
|
|
} else {
|
|
success = 0;
|
|
}
|
|
|
|
if (success) {
|
|
if ((num==0) || (num && accept[0]==REST.type.TEXT_PLAIN))
|
|
{
|
|
REST.set_header_content_type(response, REST.type.TEXT_PLAIN);
|
|
snprintf((char *)buffer, REST_MAX_CHUNK_SIZE, "%d", radio_sensor.value(param));
|
|
|
|
REST.set_response_payload(response, (uint8_t *)buffer, strlen((char *)buffer));
|
|
}
|
|
else if (num && (accept[0]==REST.type.APPLICATION_JSON))
|
|
{
|
|
REST.set_header_content_type(response, REST.type.APPLICATION_JSON);
|
|
|
|
if (param == RADIO_SENSOR_LAST_VALUE) {
|
|
snprintf((char *)buffer, REST_MAX_CHUNK_SIZE, "{'lqi':%d}", radio_sensor.value(param));
|
|
} else if (param == RADIO_SENSOR_LAST_PACKET) {
|
|
snprintf((char *)buffer, REST_MAX_CHUNK_SIZE, "{'rssi':%d}", radio_sensor.value(param));
|
|
}
|
|
|
|
REST.set_response_payload(response, buffer, strlen((char *)buffer));
|
|
}
|
|
else
|
|
{
|
|
REST.set_response_status(response, REST.status.UNSUPPORTED_MEDIA_TYPE);
|
|
const char *msg = "Supporting content-types text/plain and application/json";
|
|
REST.set_response_payload(response, msg, strlen(msg));
|
|
}
|
|
} else {
|
|
REST.set_response_status(response, REST.status.BAD_REQUEST);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
void
|
|
hw_init()
|
|
{
|
|
led1_off();
|
|
led2_off();
|
|
#if REST_RES_DS1820
|
|
ds1820_temp();
|
|
#endif
|
|
}
|
|
#define MESURE_INTERVAL (10 * CLOCK_SECOND)
|
|
#define READ_TIME ( 2 * CLOCK_SECOND)
|
|
|
|
PROCESS(rest_server_example, "Erbium Example Server");
|
|
AUTOSTART_PROCESSES(&rest_server_example);
|
|
|
|
PROCESS_THREAD(rest_server_example, ev, data)
|
|
{
|
|
#if REST_RES_DS1820
|
|
static struct etimer ds_periodic_timer;
|
|
static struct etimer ds_read_timer;
|
|
#endif
|
|
|
|
PROCESS_BEGIN();
|
|
|
|
|
|
|
|
PRINTF("Starting Erbium Example Server\n");
|
|
|
|
#ifdef RF_CHANNEL
|
|
PRINTF("RF channel: %u\n", RF_CHANNEL);
|
|
#endif
|
|
#ifdef IEEE802154_PANID
|
|
PRINTF("PAN ID: 0x%04X\n", IEEE802154_PANID);
|
|
#endif
|
|
|
|
PRINTF("uIP buffer: %u\n", UIP_BUFSIZE);
|
|
PRINTF("LL header: %u\n", UIP_LLH_LEN);
|
|
PRINTF("IP+UDP header: %u\n", UIP_IPUDPH_LEN);
|
|
PRINTF("REST max chunk: %u\n", REST_MAX_CHUNK_SIZE);
|
|
|
|
/* if static routes are used rather than RPL */
|
|
#if !UIP_CONF_IPV6_RPL && !defined (CONTIKI_TARGET_MINIMAL_NET) && !defined (CONTIKI_TARGET_NATIVE)
|
|
set_global_address();
|
|
configure_routing();
|
|
#endif
|
|
|
|
/* Initialize the OSD Hardware. */
|
|
hw_init();
|
|
|
|
/* Initialize the REST engine. */
|
|
rest_init_engine();
|
|
|
|
/* Activate the application-specific resources. */
|
|
rest_activate_resource(&resource_plug1);
|
|
/* Activate the application-specific resources. */
|
|
#if REST_RES_DS1820
|
|
rest_activate_resource(&resource_ds1820);
|
|
#endif
|
|
#if REST_RES_INFO
|
|
rest_activate_resource(&resource_info);
|
|
#endif
|
|
#if REST_RES_HELLO
|
|
rest_activate_resource(&resource_helloworld);
|
|
#endif
|
|
#if REST_RES_MIRROR
|
|
rest_activate_resource(&resource_mirror);
|
|
#endif
|
|
#if REST_RES_CHUNKS
|
|
rest_activate_resource(&resource_chunks);
|
|
#endif
|
|
#if REST_RES_PUSHING
|
|
rest_activate_periodic_resource(&periodic_resource_pushing);
|
|
#endif
|
|
#if defined (PLATFORM_HAS_BUTTON) && REST_RES_EVENT
|
|
rest_activate_event_resource(&resource_event);
|
|
#endif
|
|
#if defined (PLATFORM_HAS_BUTTON) && REST_RES_SEPARATE && WITH_COAP > 3
|
|
/* No pre-handler anymore, user coap_separate_accept() and coap_separate_reject(). */
|
|
rest_activate_resource(&resource_separate);
|
|
#endif
|
|
#if defined (PLATFORM_HAS_BUTTON) && (REST_RES_EVENT || (REST_RES_SEPARATE && WITH_COAP > 3))
|
|
SENSORS_ACTIVATE(button_sensor);
|
|
#endif
|
|
#if REST_RES_SUB
|
|
rest_activate_resource(&resource_sub);
|
|
#endif
|
|
#if defined (PLATFORM_HAS_LEDS)
|
|
#if REST_RES_LEDS
|
|
rest_activate_resource(&resource_leds);
|
|
#endif
|
|
#if REST_RES_TOGGLE
|
|
rest_activate_resource(&resource_toggle);
|
|
#endif
|
|
#endif /* PLATFORM_HAS_LEDS */
|
|
#if defined (PLATFORM_HAS_LIGHT) && REST_RES_LIGHT
|
|
SENSORS_ACTIVATE(light_sensor);
|
|
rest_activate_resource(&resource_light);
|
|
#endif
|
|
#if defined (PLATFORM_HAS_BATTERY) && REST_RES_BATTERY
|
|
SENSORS_ACTIVATE(battery_sensor);
|
|
rest_activate_resource(&resource_battery);
|
|
#endif
|
|
#if defined (PLATFORM_HAS_RADIO) && REST_RES_RADIO
|
|
SENSORS_ACTIVATE(radio_sensor);
|
|
rest_activate_resource(&resource_radio);
|
|
#endif
|
|
|
|
/* Define application-specific events here. */
|
|
#if REST_RES_DS1820
|
|
etimer_set(&ds_periodic_timer, MESURE_INTERVAL);
|
|
#endif
|
|
while(1) {
|
|
PROCESS_WAIT_EVENT();
|
|
#if defined (PLATFORM_HAS_BUTTON)
|
|
if (ev == sensors_event && data == &button_sensor) {
|
|
PRINTF("BUTTON\n");
|
|
#if REST_RES_EVENT
|
|
/* Call the event_handler for this application-specific event. */
|
|
event_event_handler(&resource_event);
|
|
#endif
|
|
#if REST_RES_SEPARATE && WITH_COAP>3
|
|
/* Also call the separate response example handler. */
|
|
separate_finalize_handler();
|
|
#endif
|
|
}
|
|
#endif /* PLATFORM_HAS_BUTTON */
|
|
#if REST_RES_DS1820
|
|
if(etimer_expired(&ds_periodic_timer)) {
|
|
PRINTF("DS1820_Periodic\n");
|
|
etimer_reset(&ds_periodic_timer);
|
|
if(ds1820_convert()){
|
|
etimer_set(&ds_read_timer, READ_TIME);
|
|
}
|
|
}
|
|
if(etimer_expired(&ds_read_timer)) {
|
|
PRINTF("DS1820_Read\n");
|
|
ds1820_read();
|
|
}
|
|
#endif
|
|
} /* while (1) */
|
|
|
|
PROCESS_END();
|
|
}
|