769 lines
32 KiB
C
769 lines
32 KiB
C
/*
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* Copyright (c) 2011, Institute for Pervasive Computing, ETH Zurich
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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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* An implementation of the Constrained Application Protocol (draft 03)
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* \author
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* Matthias Kovatsch <kovatsch@inf.ethz.ch>
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*/
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#ifdef CONTIKI_TARGET_NETSIM
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#include <stdio.h>
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#include <iostream>
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#include <cstring>
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#include <cstdlib>
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#include <unistd.h>
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#include <errno.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <netdb.h>
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#else
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#include "contiki.h"
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#include "contiki-net.h"
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#include <string.h>
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#include <stdio.h>
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#endif
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#include "er-coap-03.h"
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#include "er-coap-03-transactions.h"
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#define DEBUG 0
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#if DEBUG
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#include <stdio.h>
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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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static struct uip_udp_conn *udp_conn = NULL;
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static uint16_t current_tid = 0;
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/*-----------------------------------------------------------------------------------*/
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/*- LOCAL HELP FUNCTIONS ------------------------------------------------------------*/
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/*-----------------------------------------------------------------------------------*/
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static
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uint16_t
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log_2(uint16_t value)
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{
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uint16_t result = 0;
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do {
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value = value >> 1;
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result++;
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} while (value);
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return result ? result - 1 : result;
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}
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/*-----------------------------------------------------------------------------------*/
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static
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uint32_t
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bytes_2_uint32(uint8_t *bytes, uint16_t length)
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{
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uint32_t var = 0;
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int i = 0;
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while (i<length)
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{
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var <<= 8;
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var |= 0xFF & bytes[i++];
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}
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return var;
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}
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/*-----------------------------------------------------------------------------------*/
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/* Unused in coap-03.
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static
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int
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uint16_2_bytes(uint8_t *bytes, uint16_t var)
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{
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int i = 0;
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if (0xFF00 & var) bytes[i++] = var>>8;
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bytes[i++] = 0xFF & var;
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return i;
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}
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*/
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/*-----------------------------------------------------------------------------------*/
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static
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int
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uint32_2_bytes(uint8_t *bytes, uint32_t var)
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{
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int i = 0;
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if (0xFF000000 & var) bytes[i++] = (0xFF & var>>24);
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if (0xFFFF0000 & var) bytes[i++] = (0xFF & var>>16);
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if (0xFFFFFF00 & var) bytes[i++] = (0xFF & var>>8);
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bytes[i++] = 0xFF & var;
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return i;
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}
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/*-----------------------------------------------------------------------------------*/
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static
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int
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coap_get_variable(const char *buffer, size_t length, const char *name, const char **output)
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{
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const char *start = NULL;
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const char *end = NULL;
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const char *value_end = NULL;
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size_t name_len = 0;
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/*initialize the output buffer first*/
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*output = 0;
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name_len = strlen(name);
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end = buffer + length;
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for (start = buffer; start + name_len < end; ++start){
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if ((start == buffer || start[-1] == '&') && start[name_len] == '=' &&
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strncmp(name, start, name_len)==0) {
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/* Point start to variable value */
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start += name_len + 1;
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/* Point end to the end of the value */
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value_end = (const char *) memchr(start, '&', end - start);
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if (value_end == NULL) {
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value_end = end;
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}
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*output = start;
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return (value_end - start);
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}
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}
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return 0;
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}
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/*-----------------------------------------------------------------------------------*/
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/*- MEASSAGE SENDING ----------------------------------------------------------------*/
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/*-----------------------------------------------------------------------------------*/
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void
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coap_init_connection(uint16_t port)
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{
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/* new connection with remote host */
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udp_conn = udp_new(NULL, 0, NULL);
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udp_bind(udp_conn, port);
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PRINTF("Listening on port %u\n", uip_ntohs(udp_conn->lport));
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/* Initialize transaction ID. */
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current_tid = random_rand();
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}
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/*-----------------------------------------------------------------------------------*/
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uint16_t
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coap_get_tid()
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{
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++current_tid;
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PRINTF("Get TID %u\n", current_tid);
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return current_tid;
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}
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/*-----------------------------------------------------------------------------------*/
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void
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coap_send_message(uip_ipaddr_t *addr, uint16_t port, const uint8_t *data, uint16_t length)
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{
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/*configure connection to reply to client*/
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uip_ipaddr_copy(&udp_conn->ripaddr, addr);
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udp_conn->rport = port;
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uip_udp_packet_send(udp_conn, data, length);
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PRINTF("-sent UDP datagram------\n Length: %u\n -----------------------\n", length);
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/* Restore server connection to allow data from any node */
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memset(&udp_conn->ripaddr, 0, sizeof(udp_conn->ripaddr));
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udp_conn->rport = 0;
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}
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/*-----------------------------------------------------------------------------------*/
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/*- MEASSAGE PROCESSING -------------------------------------------------------------*/
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/*-----------------------------------------------------------------------------------*/
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void
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coap_init_message(void *packet, coap_message_type_t type, uint8_t code, uint16_t tid)
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{
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memset(packet, 0, sizeof(coap_packet_t));
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((coap_packet_t *)packet)->type = type;
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((coap_packet_t *)packet)->code = code;
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((coap_packet_t *)packet)->tid = tid;
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}
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/*-----------------------------------------------------------------------------------*/
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int
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coap_serialize_message(void *packet, uint8_t *buffer)
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{
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((coap_packet_t *)packet)->buffer = buffer;
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((coap_packet_t *)packet)->version = 1;
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((coap_packet_t *)packet)->option_count = 0;
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/* serialize options */
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uint8_t *option = ((coap_packet_t *)packet)->buffer + COAP_HEADER_LEN;
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size_t option_len = 0;
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int index = 0;
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if (IS_OPTION((coap_packet_t *)packet, COAP_OPTION_CONTENT_TYPE)) {
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((coap_header_option_t *)option)->s.delta = 1;
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((coap_header_option_t *)option)->s.length = 1;
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*(++option) = ((coap_packet_t *)packet)->content_type;
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PRINTF("OPTION %u (type %u, len 1, delta %u): ", ((coap_packet_t *)packet)->option_count, COAP_OPTION_CONTENT_TYPE, COAP_OPTION_CONTENT_TYPE - index);
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PRINTF("Content-Type [%u]\n", ((coap_packet_t *)packet)->content_type);
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index = COAP_OPTION_CONTENT_TYPE;
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option += 1;
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++(((coap_packet_t *)packet)->option_count);
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}
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if (IS_OPTION((coap_packet_t *)packet, COAP_OPTION_MAX_AGE)) {
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option_len = uint32_2_bytes(option+1, ((coap_packet_t *)packet)->max_age);
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((coap_header_option_t *)option)->s.delta = COAP_OPTION_MAX_AGE - index;
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((coap_header_option_t *)option)->s.length = option_len;
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PRINTF("OPTION %u (type %u, len %u, delta %u): ", ((coap_packet_t *)packet)->option_count, COAP_OPTION_MAX_AGE, option_len, COAP_OPTION_MAX_AGE - index);
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PRINTF("Max-Age [%lu]\n", ((coap_packet_t *)packet)->max_age);
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index = COAP_OPTION_MAX_AGE;
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option += 1 + option_len;
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++(((coap_packet_t *)packet)->option_count);
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}
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if (IS_OPTION((coap_packet_t *)packet, COAP_OPTION_ETAG)) {
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((coap_header_option_t *)option)->s.delta = COAP_OPTION_ETAG - index;
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((coap_header_option_t *)option)->s.length = ((coap_packet_t *)packet)->etag_len;
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memcpy(++option, ((coap_packet_t *)packet)->etag, ((coap_packet_t *)packet)->etag_len);
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PRINTF("OPTION %u (type %u, len %u, delta %u): ", ((coap_packet_t *)packet)->option_count, COAP_OPTION_ETAG, ((coap_packet_t *)packet)->etag_len, COAP_OPTION_ETAG - index);
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PRINTF("ETag %u [0x%02X", ((coap_packet_t *)packet)->etag_len, ((coap_packet_t *)packet)->etag[0]); /*FIXME always prints 4 bytes */
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PRINTF("%02X", ((coap_packet_t *)packet)->etag[1]);
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PRINTF("%02X", ((coap_packet_t *)packet)->etag[2]);
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PRINTF("%02X", ((coap_packet_t *)packet)->etag[3]);
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PRINTF("]\n");
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index = COAP_OPTION_ETAG;
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option += ((coap_packet_t *)packet)->etag_len;
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++(((coap_packet_t *)packet)->option_count);
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}
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if (IS_OPTION((coap_packet_t *)packet, COAP_OPTION_URI_HOST)) {
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if (((coap_packet_t *)packet)->uri_host_len<15) {
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((coap_header_option_t *)option)->s.delta = COAP_OPTION_URI_HOST - index;
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((coap_header_option_t *)option)->s.length = ((coap_packet_t *)packet)->uri_host_len;
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option += 1;
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} else {
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((coap_header_option_t *)option)->l.delta = COAP_OPTION_URI_HOST - index;
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((coap_header_option_t *)option)->s.length = 15;
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((coap_header_option_t *)option)->l.length = ((coap_packet_t *)packet)->uri_host_len - 15;
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option += 2;
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}
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memcpy(option, ((coap_packet_t *)packet)->uri_host, ((coap_packet_t *)packet)->uri_host_len);
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PRINTF("OPTION %u (type %u, len %u, delta %u): ", ((coap_packet_t *)packet)->option_count, COAP_OPTION_URI_HOST, ((coap_packet_t *)packet)->uri_host_len, COAP_OPTION_URI_HOST - index);
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PRINTF("Uri-Auth [%.*s]\n", ((coap_packet_t *)packet)->uri_host_len, ((coap_packet_t *)packet)->uri_host);
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index = COAP_OPTION_URI_HOST;
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option += ((coap_packet_t *)packet)->uri_host_len;
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++(((coap_packet_t *)packet)->option_count);
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}
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if (IS_OPTION((coap_packet_t *)packet, COAP_OPTION_LOCATION_PATH)) {
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if (((coap_packet_t *)packet)->location_path_len<15) {
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((coap_header_option_t *)option)->s.delta = COAP_OPTION_LOCATION_PATH - index;
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((coap_header_option_t *)option)->s.length = ((coap_packet_t *)packet)->location_path_len;
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option += 1;
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} else {
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((coap_header_option_t *)option)->l.delta = COAP_OPTION_LOCATION_PATH - index;
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((coap_header_option_t *)option)->s.length = 15;
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((coap_header_option_t *)option)->l.length = ((coap_packet_t *)packet)->location_path_len - 15;
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option += 2;
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}
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memcpy(option, ((coap_packet_t *)packet)->location_path, ((coap_packet_t *)packet)->location_path_len);
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PRINTF("OPTION %u (type %u, len %u, delta %u): ", ((coap_packet_t *)packet)->option_count, COAP_OPTION_LOCATION_PATH, ((coap_packet_t *)packet)->location_path_len, COAP_OPTION_LOCATION_PATH - index);
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PRINTF("Location [%.*s]\n", ((coap_packet_t *)packet)->location_path_len, ((coap_packet_t *)packet)->location_path);
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index = COAP_OPTION_LOCATION_PATH;
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option += ((coap_packet_t *)packet)->location_path_len;
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++(((coap_packet_t *)packet)->option_count);
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}
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if (IS_OPTION((coap_packet_t *)packet, COAP_OPTION_URI_PATH)) {
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if (((coap_packet_t *)packet)->uri_path_len<15) {
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((coap_header_option_t *)option)->s.delta = COAP_OPTION_URI_PATH - index;
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((coap_header_option_t *)option)->s.length = ((coap_packet_t *)packet)->uri_path_len;
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option += 1;
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} else {
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((coap_header_option_t *)option)->l.delta = COAP_OPTION_URI_PATH - index;
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((coap_header_option_t *)option)->s.length = 15;
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((coap_header_option_t *)option)->l.length = ((coap_packet_t *)packet)->uri_path_len - 15;
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option += 2;
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}
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memcpy(option, ((coap_packet_t *)packet)->uri_path, ((coap_packet_t *)packet)->uri_path_len);
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PRINTF("OPTION %u (type %u, len %u, delta %u): ", ((coap_packet_t *)packet)->option_count, COAP_OPTION_URI_PATH, ((coap_packet_t *)packet)->uri_path_len, COAP_OPTION_URI_PATH - index);
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PRINTF("Uri-Path [%.*s]\n", ((coap_packet_t *)packet)->uri_path_len, ((coap_packet_t *)packet)->uri_path);
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index = COAP_OPTION_URI_PATH;
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option += ((coap_packet_t *)packet)->uri_path_len;
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++(((coap_packet_t *)packet)->option_count);
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}
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if (IS_OPTION((coap_packet_t *)packet, COAP_OPTION_OBSERVE)) {
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option_len = uint32_2_bytes(option+1, ((coap_packet_t *)packet)->observe);
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((coap_header_option_t *)option)->s.delta = COAP_OPTION_OBSERVE - index;
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((coap_header_option_t *)option)->s.length = option_len;
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PRINTF("OPTION %u (type %u, len %u, delta %u): ", ((coap_packet_t *)packet)->option_count, COAP_OPTION_OBSERVE, option_len, COAP_OPTION_OBSERVE - index);
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PRINTF("Observe [%lu]\n", ((coap_packet_t *)packet)->observe);
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index = COAP_OPTION_OBSERVE;
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option += 1 + option_len;
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++(((coap_packet_t *)packet)->option_count);
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}
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if (IS_OPTION((coap_packet_t *)packet, COAP_OPTION_TOKEN)) {
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((coap_header_option_t *)option)->s.delta = COAP_OPTION_TOKEN - index;
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((coap_header_option_t *)option)->s.length = ((coap_packet_t *)packet)->token_len;
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memcpy(++option, ((coap_packet_t *)packet)->token, ((coap_packet_t *)packet)->token_len);
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PRINTF("OPTION %u (type %u, len %u, delta %u): ", ((coap_packet_t *)packet)->option_count, COAP_OPTION_TOKEN, ((coap_packet_t *)packet)->token_len, COAP_OPTION_TOKEN - index);
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PRINTF("Token %u [0x%02X%02X]\n", ((coap_packet_t *)packet)->token_len, ((coap_packet_t *)packet)->token[0], ((coap_packet_t *)packet)->token[1]); /*FIXME always prints 2 bytes */
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index = COAP_OPTION_TOKEN;
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option += ((coap_packet_t *)packet)->token_len;
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++(((coap_packet_t *)packet)->option_count);
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}
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if (IS_OPTION((coap_packet_t *)packet, COAP_OPTION_BLOCK)) {
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uint32_t block = ((coap_packet_t *)packet)->block_num << 4;
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if (((coap_packet_t *)packet)->block_more) block |= 0x8;
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block |= 0xF & log_2(((coap_packet_t *)packet)->block_size/16);
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option_len = uint32_2_bytes(option+1, block);
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((coap_header_option_t *)option)->s.delta = COAP_OPTION_BLOCK - index;
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((coap_header_option_t *)option)->s.length = option_len;
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PRINTF("OPTION %u (type %u, len %u, delta %u): ", ((coap_packet_t *)packet)->option_count, COAP_OPTION_BLOCK, option_len, COAP_OPTION_BLOCK - index);
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PRINTF("Block [%lu%s (%u B/blk)]\n", ((coap_packet_t *)packet)->block_num, ((coap_packet_t *)packet)->block_more ? "+" : "", ((coap_packet_t *)packet)->block_size);
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index = COAP_OPTION_BLOCK;
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option += 1 + option_len;
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++(((coap_packet_t *)packet)->option_count);
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}
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if (IS_OPTION((coap_packet_t *)packet, COAP_OPTION_URI_QUERY)) {
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if (((coap_packet_t *)packet)->uri_query_len<15) {
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((coap_header_option_t *)option)->s.delta = COAP_OPTION_URI_QUERY - index;
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((coap_header_option_t *)option)->s.length = ((coap_packet_t *)packet)->uri_query_len;
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option += 1;
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} else {
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((coap_header_option_t *)option)->l.delta = COAP_OPTION_URI_QUERY - index;
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((coap_header_option_t *)option)->s.length = 15;
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((coap_header_option_t *)option)->l.length = ((coap_packet_t *)packet)->uri_query_len - 15;
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option += 2;
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}
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memcpy(option, ((coap_packet_t *)packet)->uri_query, ((coap_packet_t *)packet)->uri_query_len);
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PRINTF("OPTION %u (type %u, len %u, delta %u): ", ((coap_packet_t *)packet)->option_count, COAP_OPTION_URI_QUERY, ((coap_packet_t *)packet)->uri_query_len, COAP_OPTION_URI_QUERY - index);
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PRINTF("Uri-Query [%.*s]\n", ((coap_packet_t *)packet)->uri_query_len, ((coap_packet_t *)packet)->uri_query);
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index = COAP_OPTION_URI_QUERY;
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option += ((coap_packet_t *)packet)->uri_query_len;
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++(((coap_packet_t *)packet)->option_count);
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}
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/* pack payload */
|
|
if ((option - ((coap_packet_t *)packet)->buffer)<=COAP_MAX_HEADER_SIZE)
|
|
{
|
|
memmove(option, ((coap_packet_t *)packet)->payload, ((coap_packet_t *)packet)->payload_len);
|
|
}
|
|
else
|
|
{
|
|
/* An error occured. Caller must check for !=0. */
|
|
return 0;
|
|
}
|
|
|
|
/* set header fields */
|
|
((coap_packet_t *)packet)->buffer[0] = 0x00;
|
|
((coap_packet_t *)packet)->buffer[0] |= COAP_HEADER_VERSION_MASK & (((coap_packet_t *)packet)->version)<<COAP_HEADER_VERSION_POSITION;
|
|
((coap_packet_t *)packet)->buffer[0] |= COAP_HEADER_TYPE_MASK & (((coap_packet_t *)packet)->type)<<COAP_HEADER_TYPE_POSITION;
|
|
((coap_packet_t *)packet)->buffer[0] |= COAP_HEADER_OPTION_COUNT_MASK & (((coap_packet_t *)packet)->option_count)<<COAP_HEADER_OPTION_COUNT_POSITION;
|
|
((coap_packet_t *)packet)->buffer[1] = ((coap_packet_t *)packet)->code;
|
|
((coap_packet_t *)packet)->buffer[2] = 0xFF & (((coap_packet_t *)packet)->tid)>>8;
|
|
((coap_packet_t *)packet)->buffer[3] = 0xFF & ((coap_packet_t *)packet)->tid;
|
|
|
|
PRINTF("Serialized %u options, header len %u, payload len %u\n", ((coap_packet_t *)packet)->option_count, option - ((coap_packet_t *)packet)->buffer, ((coap_packet_t *)packet)->payload_len);
|
|
|
|
return (option - ((coap_packet_t *)packet)->buffer) + ((coap_packet_t *)packet)->payload_len; /* packet length */
|
|
}
|
|
/*-----------------------------------------------------------------------------------*/
|
|
error_t
|
|
coap_parse_message(void *packet, uint8_t *data, uint16_t data_len)
|
|
{
|
|
/* Initialize packet */
|
|
memset(packet, 0, sizeof(coap_packet_t));
|
|
|
|
/* pointer to packet bytes */
|
|
((coap_packet_t *)packet)->buffer = data;
|
|
|
|
/* parse header fields */
|
|
((coap_packet_t *)packet)->version = (COAP_HEADER_VERSION_MASK & ((coap_packet_t *)packet)->buffer[0])>>COAP_HEADER_VERSION_POSITION;
|
|
((coap_packet_t *)packet)->type = (COAP_HEADER_TYPE_MASK & ((coap_packet_t *)packet)->buffer[0])>>COAP_HEADER_TYPE_POSITION;
|
|
((coap_packet_t *)packet)->option_count = (COAP_HEADER_OPTION_COUNT_MASK & ((coap_packet_t *)packet)->buffer[0])>>COAP_HEADER_OPTION_COUNT_POSITION;
|
|
((coap_packet_t *)packet)->code = ((coap_packet_t *)packet)->buffer[1];
|
|
((coap_packet_t *)packet)->tid = ((coap_packet_t *)packet)->buffer[2]<<8 | ((coap_packet_t *)packet)->buffer[3];
|
|
|
|
/* parse options */
|
|
((coap_packet_t *)packet)->options = 0x0000;
|
|
coap_header_option_t *current_option = (coap_header_option_t *) (data + COAP_HEADER_LEN);
|
|
|
|
if (((coap_packet_t *)packet)->option_count) {
|
|
uint8_t option_index = 0;
|
|
uint8_t option_type = 0;
|
|
|
|
uint16_t option_len = 0;
|
|
uint8_t *option_data = NULL;
|
|
|
|
uint8_t *last_option = NULL;
|
|
|
|
for (option_index=0; option_index < ((coap_packet_t *)packet)->option_count; ++option_index) {
|
|
|
|
option_type += current_option->s.delta;
|
|
|
|
if (current_option->s.length<15) {
|
|
option_len = current_option->s.length;
|
|
option_data = ((uint8_t *) current_option) + 1;
|
|
} else {
|
|
option_len = current_option->l.length + 15;
|
|
option_data = ((uint8_t *) current_option) + 2;
|
|
}
|
|
|
|
PRINTF("OPTION %u (type %u, len %u, delta %u): ", option_index, option_type, option_len, current_option->s.delta);
|
|
|
|
SET_OPTION((coap_packet_t *)packet, option_type);
|
|
|
|
switch (option_type) {
|
|
case COAP_OPTION_CONTENT_TYPE:
|
|
((coap_packet_t *)packet)->content_type = option_data[0];
|
|
PRINTF("Content-Type [%u]\n", ((coap_packet_t *)packet)->content_type);
|
|
break;
|
|
case COAP_OPTION_MAX_AGE:
|
|
((coap_packet_t *)packet)->max_age = bytes_2_uint32(option_data, option_len);
|
|
PRINTF("Max-Age [%lu]\n", ((coap_packet_t *)packet)->max_age);
|
|
break;
|
|
case COAP_OPTION_ETAG:
|
|
((coap_packet_t *)packet)->etag_len = MIN(COAP_ETAG_LEN, option_len);
|
|
memcpy(((coap_packet_t *)packet)->etag, option_data, ((coap_packet_t *)packet)->etag_len);
|
|
PRINTF("ETag %u [0x%02X", ((coap_packet_t *)packet)->etag_len, ((coap_packet_t *)packet)->etag[0]); /*FIXME always prints 4 bytes */
|
|
PRINTF("%02X", ((coap_packet_t *)packet)->etag[1]);
|
|
PRINTF("%02X", ((coap_packet_t *)packet)->etag[2]);
|
|
PRINTF("%02X", ((coap_packet_t *)packet)->etag[3]);
|
|
PRINTF("]\n");
|
|
break;
|
|
case COAP_OPTION_URI_HOST:
|
|
((coap_packet_t *)packet)->uri_host = (char *) option_data;
|
|
((coap_packet_t *)packet)->uri_host_len = option_len;
|
|
PRINTF("Uri-Auth [%.*s]\n", ((coap_packet_t *)packet)->uri_host_len, ((coap_packet_t *)packet)->uri_host);
|
|
break;
|
|
case COAP_OPTION_LOCATION_PATH:
|
|
((coap_packet_t *)packet)->location_path = (char *) option_data;
|
|
((coap_packet_t *)packet)->location_path_len = option_len;
|
|
PRINTF("Location [%.*s]\n", ((coap_packet_t *)packet)->location_path_len, ((coap_packet_t *)packet)->location_path);
|
|
break;
|
|
case COAP_OPTION_URI_PATH:
|
|
((coap_packet_t *)packet)->uri_path = (char *) option_data;
|
|
((coap_packet_t *)packet)->uri_path_len = option_len;
|
|
PRINTF("Uri-Path [%.*s]\n", ((coap_packet_t *)packet)->uri_path_len, ((coap_packet_t *)packet)->uri_path);
|
|
break;
|
|
case COAP_OPTION_OBSERVE:
|
|
((coap_packet_t *)packet)->observe = bytes_2_uint32(option_data, option_len);
|
|
PRINTF("Observe [%lu]\n", ((coap_packet_t *)packet)->observe);
|
|
break;
|
|
case COAP_OPTION_TOKEN:
|
|
((coap_packet_t *)packet)->token_len = MIN(COAP_TOKEN_LEN, option_len);
|
|
memcpy(((coap_packet_t *)packet)->token, option_data, ((coap_packet_t *)packet)->token_len);
|
|
PRINTF("Token %u [0x%02X%02X]\n", ((coap_packet_t *)packet)->token_len, ((coap_packet_t *)packet)->token[0], ((coap_packet_t *)packet)->token[1]); /*FIXME always prints 2 bytes */
|
|
break;
|
|
case COAP_OPTION_BLOCK:
|
|
((coap_packet_t *)packet)->block_num = bytes_2_uint32(option_data, option_len);
|
|
((coap_packet_t *)packet)->block_more = (((coap_packet_t *)packet)->block_num & 0x08)>>3;
|
|
((coap_packet_t *)packet)->block_size = 16 << (((coap_packet_t *)packet)->block_num & 0x07);
|
|
((coap_packet_t *)packet)->block_offset = (((coap_packet_t *)packet)->block_num & ~0x0F)<<(((coap_packet_t *)packet)->block_num & 0x07);
|
|
((coap_packet_t *)packet)->block_num >>= 4;
|
|
PRINTF("Block [%lu%s (%u B/blk)]\n", ((coap_packet_t *)packet)->block_num, ((coap_packet_t *)packet)->block_more ? "+" : "", ((coap_packet_t *)packet)->block_size);
|
|
break;
|
|
case COAP_OPTION_NOOP:
|
|
PRINTF("Noop-Fencepost\n");
|
|
break;
|
|
case COAP_OPTION_URI_QUERY:
|
|
((coap_packet_t *)packet)->uri_query = (char *) option_data;
|
|
((coap_packet_t *)packet)->uri_query_len = option_len;
|
|
PRINTF("Uri-Query [%.*s]\n", ((coap_packet_t *)packet)->uri_query_len, ((coap_packet_t *)packet)->uri_query);
|
|
break;
|
|
default:
|
|
PRINTF("unknown (%u)\n", option_type);
|
|
if (option_type & 1)
|
|
{
|
|
return UNKNOWN_CRITICAL_OPTION;
|
|
}
|
|
}
|
|
|
|
/* terminate strings where possible */
|
|
if (last_option) {
|
|
last_option[0] = 0x00;
|
|
}
|
|
|
|
last_option = (uint8_t *) current_option;
|
|
current_option = (coap_header_option_t *) (option_data+option_len);
|
|
} /* for () */
|
|
} /* if (oc) */
|
|
|
|
((coap_packet_t *)packet)->payload = (uint8_t *) current_option;
|
|
((coap_packet_t *)packet)->payload_len = data_len - (((coap_packet_t *)packet)->payload - data);
|
|
|
|
return NO_ERROR;
|
|
}
|
|
/*-----------------------------------------------------------------------------------*/
|
|
/*- REST FRAMEWORK FUNCTIONS --------------------------------------------------------*/
|
|
/*-----------------------------------------------------------------------------------*/
|
|
int
|
|
coap_get_query_variable(void *packet, const char *name, const char **output)
|
|
{
|
|
if (IS_OPTION((coap_packet_t *)packet, COAP_OPTION_URI_QUERY)) {
|
|
return coap_get_variable(((coap_packet_t *)packet)->uri_query, ((coap_packet_t *)packet)->uri_query_len, name, output);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
coap_get_post_variable(void *packet, const char *name, const char **output)
|
|
{
|
|
if (((coap_packet_t *)packet)->payload_len) {
|
|
return coap_get_variable((const char *)((coap_packet_t *)packet)->payload, ((coap_packet_t *)packet)->payload_len, name, output);
|
|
}
|
|
return 0;
|
|
}
|
|
/*-----------------------------------------------------------------------------------*/
|
|
/*- HEADER OPTION GETTERS AND SETTERS -----------------------------------------------*/
|
|
/*-----------------------------------------------------------------------------------*/
|
|
unsigned int
|
|
coap_get_header_content_type(void *packet)
|
|
{
|
|
return ((coap_packet_t *)packet)->content_type;
|
|
}
|
|
|
|
int
|
|
coap_set_header_content_type(void *packet, unsigned int content_type)
|
|
{
|
|
((coap_packet_t *)packet)->content_type = (coap_content_type_t) content_type;
|
|
SET_OPTION((coap_packet_t *)packet, COAP_OPTION_CONTENT_TYPE);
|
|
return 1;
|
|
}
|
|
/*-----------------------------------------------------------------------------------*/
|
|
int
|
|
coap_get_header_max_age(void *packet, uint32_t *age)
|
|
{
|
|
if (!IS_OPTION((coap_packet_t *)packet, COAP_OPTION_MAX_AGE)) {
|
|
*age = COAP_DEFAULT_MAX_AGE;
|
|
} else {
|
|
*age = ((coap_packet_t *)packet)->max_age;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
int
|
|
coap_set_header_max_age(void *packet, uint32_t age)
|
|
{
|
|
((coap_packet_t *)packet)->max_age = age;
|
|
SET_OPTION((coap_packet_t *)packet, COAP_OPTION_MAX_AGE);
|
|
return 1;
|
|
}
|
|
/*-----------------------------------------------------------------------------------*/
|
|
int
|
|
coap_get_header_etag(void *packet, const uint8_t **etag)
|
|
{
|
|
if (!IS_OPTION((coap_packet_t *)packet, COAP_OPTION_ETAG)) return 0;
|
|
|
|
*etag = ((coap_packet_t *)packet)->etag;
|
|
return ((coap_packet_t *)packet)->etag_len;
|
|
}
|
|
|
|
int
|
|
coap_set_header_etag(void *packet, const uint8_t *etag, size_t etag_len)
|
|
{
|
|
((coap_packet_t *)packet)->etag_len = MIN(COAP_ETAG_LEN, etag_len);
|
|
memcpy(((coap_packet_t *)packet)->etag, etag, ((coap_packet_t *)packet)->etag_len);
|
|
|
|
SET_OPTION((coap_packet_t *)packet, COAP_OPTION_ETAG);
|
|
return ((coap_packet_t *)packet)->etag_len;
|
|
}
|
|
/*-----------------------------------------------------------------------------------*/
|
|
int
|
|
coap_get_header_uri_host(void *packet, const char **host)
|
|
{
|
|
if (!IS_OPTION((coap_packet_t *)packet, COAP_OPTION_URI_HOST)) return 0;
|
|
|
|
*host = ((coap_packet_t *)packet)->uri_host;
|
|
return ((coap_packet_t *)packet)->uri_host_len;
|
|
}
|
|
|
|
int
|
|
coap_set_header_uri_host(void *packet, const char *host)
|
|
{
|
|
((coap_packet_t *)packet)->uri_host = host;
|
|
((coap_packet_t *)packet)->uri_host_len = strlen(host);
|
|
|
|
SET_OPTION((coap_packet_t *)packet, COAP_OPTION_URI_HOST);
|
|
return ((coap_packet_t *)packet)->uri_host_len;
|
|
}
|
|
/*-----------------------------------------------------------------------------------*/
|
|
int
|
|
coap_get_header_location(void *packet, const char **location)
|
|
{
|
|
if (!IS_OPTION((coap_packet_t *)packet, COAP_OPTION_LOCATION_PATH)) return 0;
|
|
|
|
*location = ((coap_packet_t *)packet)->location_path;
|
|
return ((coap_packet_t *)packet)->location_path_len;
|
|
}
|
|
|
|
int
|
|
coap_set_header_location(void *packet, const char *location)
|
|
{
|
|
while (location[0]=='/') ++location;
|
|
|
|
((coap_packet_t *)packet)->location_path = location;
|
|
((coap_packet_t *)packet)->location_path_len = strlen(location);
|
|
|
|
SET_OPTION((coap_packet_t *)packet, COAP_OPTION_LOCATION_PATH);
|
|
return ((coap_packet_t *)packet)->location_path_len;
|
|
}
|
|
/*-----------------------------------------------------------------------------------*/
|
|
int
|
|
coap_get_header_uri_path(void *packet, const char **path)
|
|
{
|
|
if (!IS_OPTION((coap_packet_t *)packet, COAP_OPTION_URI_PATH)) return 0;
|
|
|
|
*path = ((coap_packet_t *)packet)->uri_path;
|
|
return ((coap_packet_t *)packet)->uri_path_len;
|
|
}
|
|
|
|
int
|
|
coap_set_header_uri_path(void *packet, const char *path)
|
|
{
|
|
while (path[0]=='/') ++path;
|
|
|
|
((coap_packet_t *)packet)->uri_path = path;
|
|
((coap_packet_t *)packet)->uri_path_len = strlen(path);
|
|
|
|
SET_OPTION((coap_packet_t *)packet, COAP_OPTION_URI_PATH);
|
|
return ((coap_packet_t *)packet)->uri_path_len;
|
|
}
|
|
/*-----------------------------------------------------------------------------------*/
|
|
int
|
|
coap_get_header_observe(void *packet, uint32_t *observe)
|
|
{
|
|
if (!IS_OPTION((coap_packet_t *)packet, COAP_OPTION_OBSERVE)) return 0;
|
|
|
|
*observe = ((coap_packet_t *)packet)->observe;
|
|
return 1;
|
|
}
|
|
|
|
int
|
|
coap_set_header_observe(void *packet, uint32_t observe)
|
|
{
|
|
((coap_packet_t *)packet)->observe = observe;
|
|
SET_OPTION((coap_packet_t *)packet, COAP_OPTION_OBSERVE);
|
|
return 1;
|
|
}
|
|
/*-----------------------------------------------------------------------------------*/
|
|
int
|
|
coap_get_header_token(void *packet, const uint8_t **token)
|
|
{
|
|
if (!IS_OPTION((coap_packet_t *)packet, COAP_OPTION_TOKEN)) return 0;
|
|
|
|
*token = ((coap_packet_t *)packet)->token;
|
|
return ((coap_packet_t *)packet)->token_len;
|
|
}
|
|
|
|
int
|
|
coap_set_header_token(void *packet, const uint8_t *token, size_t token_len)
|
|
{
|
|
((coap_packet_t *)packet)->token_len = MIN(COAP_TOKEN_LEN, token_len);
|
|
memcpy(((coap_packet_t *)packet)->token, token, ((coap_packet_t *)packet)->token_len);
|
|
|
|
SET_OPTION((coap_packet_t *)packet, COAP_OPTION_TOKEN);
|
|
return ((coap_packet_t *)packet)->token_len;
|
|
}
|
|
/*-----------------------------------------------------------------------------------*/
|
|
int
|
|
coap_get_header_block(void *packet, uint32_t *num, uint8_t *more, uint16_t *size, uint32_t *offset)
|
|
{
|
|
if (!IS_OPTION((coap_packet_t *)packet, COAP_OPTION_BLOCK)) return 0;
|
|
|
|
/* pointers may be NULL to get only specific block parameters */
|
|
if (num!=NULL) *num = ((coap_packet_t *)packet)->block_num;
|
|
if (more!=NULL) *more = ((coap_packet_t *)packet)->block_more;
|
|
if (size!=NULL) *size = ((coap_packet_t *)packet)->block_size;
|
|
if (offset!=NULL) *offset = ((coap_packet_t *)packet)->block_offset;
|
|
|
|
return 1;
|
|
}
|
|
|
|
int
|
|
coap_set_header_block(void *packet, uint32_t num, uint8_t more, uint16_t size)
|
|
{
|
|
if (size<16) return 0;
|
|
if (size>2048) return 0;
|
|
if (num>0x0FFFFF) return 0;
|
|
|
|
((coap_packet_t *)packet)->block_num = num;
|
|
((coap_packet_t *)packet)->block_more = more;
|
|
((coap_packet_t *)packet)->block_size = size;
|
|
|
|
SET_OPTION((coap_packet_t *)packet, COAP_OPTION_BLOCK);
|
|
return 1;
|
|
}
|
|
/*-----------------------------------------------------------------------------------*/
|
|
int
|
|
coap_get_header_uri_query(void *packet, const char **query)
|
|
{
|
|
if (!IS_OPTION((coap_packet_t *)packet, COAP_OPTION_URI_QUERY)) return 0;
|
|
|
|
*query = ((coap_packet_t *)packet)->uri_query;
|
|
return ((coap_packet_t *)packet)->uri_query_len;
|
|
}
|
|
|
|
int
|
|
coap_set_header_uri_query(void *packet, const char *query)
|
|
{
|
|
while (query[0]=='?') ++query;
|
|
|
|
((coap_packet_t *)packet)->uri_query = query;
|
|
((coap_packet_t *)packet)->uri_query_len = strlen(query);
|
|
|
|
SET_OPTION((coap_packet_t *)packet, COAP_OPTION_URI_QUERY);
|
|
return ((coap_packet_t *)packet)->uri_query_len;
|
|
}
|
|
/*-----------------------------------------------------------------------------------*/
|
|
/*- PAYLOAD -------------------------------------------------------------------------*/
|
|
/*-----------------------------------------------------------------------------------*/
|
|
int
|
|
coap_get_payload(void *packet, const uint8_t **payload)
|
|
{
|
|
if (((coap_packet_t *)packet)->payload) {
|
|
*payload = ((coap_packet_t *)packet)->payload;
|
|
return ((coap_packet_t *)packet)->payload_len;
|
|
} else {
|
|
*payload = NULL;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
int
|
|
coap_set_payload(void *packet, const void *payload, size_t length)
|
|
{
|
|
PRINTF("setting payload (%u/%u)\n", length, REST_MAX_CHUNK_SIZE);
|
|
|
|
((coap_packet_t *)packet)->payload = (uint8_t *) payload;
|
|
((coap_packet_t *)packet)->payload_len = MIN(REST_MAX_CHUNK_SIZE, length);
|
|
|
|
return ((coap_packet_t *)packet)->payload_len;
|
|
}
|
|
/*-----------------------------------------------------------------------------------*/
|