terence zhang
pick up wakaama files from https://github.com/eclipse/wakaama
Diff: core/er-coap-13/er-coap-13.c
- Revision:
- 0:c2dff8cbb91a
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/core/er-coap-13/er-coap-13.c Wed Apr 19 11:27:34 2017 +0000
@@ -0,0 +1,1371 @@
+/*
+ * Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the Institute nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * This file is part of the Contiki operating system.
+ */
+
+/**
+ * \file
+ * An implementation of the Constrained Application Protocol (draft 12)
+ * \author
+ * Matthias Kovatsch <kovatsch@inf.ethz.ch>
+ * \contributors
+ * David Navarro, Intel Corporation - Adapt to usage in liblwm2m
+ */
+
+
+#include <stdlib.h>
+
+#include <string.h>
+#include <stdio.h>
+
+#include "er-coap-13.h"
+
+#include "liblwm2m.h" /* for lwm2m_malloc() and lwm2m_free() */
+
+#define DEBUG 0
+#if DEBUG
+#include <stdio.h>
+#define PRINTF(...) printf(__VA_ARGS__)
+#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])
+#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])
+#else
+#define PRINTF(...)
+#define PRINT6ADDR(addr)
+#define PRINTLLADDR(addr)
+#endif
+
+/*-----------------------------------------------------------------------------------*/
+/*- Variables -----------------------------------------------------------------------*/
+/*-----------------------------------------------------------------------------------*/
+static uint16_t current_mid = 0;
+
+coap_status_t coap_error_code = NO_ERROR;
+const char *coap_error_message = "";
+/*-----------------------------------------------------------------------------------*/
+/*- LOCAL HELP FUNCTIONS ------------------------------------------------------------*/
+/*-----------------------------------------------------------------------------------*/
+static
+uint16_t
+coap_log_2(uint16_t value)
+{
+ uint16_t result = 0;
+ do {
+ value = value >> 1;
+ result++;
+ } while (value);
+
+ return result ? result - 1 : result;
+}
+/*-----------------------------------------------------------------------------------*/
+static
+uint32_t
+coap_parse_int_option(uint8_t *bytes, size_t length)
+{
+ uint32_t var = 0;
+ size_t i = 0;
+ while (i<length)
+ {
+ var <<= 8;
+ var |= bytes[i++];
+ }
+ return var;
+}
+/*-----------------------------------------------------------------------------------*/
+static
+uint8_t
+coap_option_nibble(unsigned int value)
+{
+ if (value<13)
+ {
+ return value;
+ }
+ else if (value<=0xFF+13)
+ {
+ return 13;
+ }
+ else
+ {
+ return 14;
+ }
+}
+/*-----------------------------------------------------------------------------------*/
+static
+size_t
+coap_set_option_header(unsigned int delta, size_t length, uint8_t *buffer)
+{
+ size_t written = 0;
+ unsigned int *x = δ
+
+ buffer[0] = coap_option_nibble(delta)<<4 | coap_option_nibble(length);
+
+ /* avoids code duplication without function overhead */
+ do
+ {
+ if (*x>268)
+ {
+ buffer[++written] = (*x-269)>>8;
+ buffer[++written] = (*x-269);
+ }
+ else if (*x>12)
+ {
+ buffer[++written] = (*x-13);
+ }
+ }
+ while (x!=(unsigned int *)&length && (x=(unsigned int *)&length));
+
+ PRINTF("WRITTEN %u B opt header\n", written);
+
+ return ++written;
+}
+/*-----------------------------------------------------------------------------------*/
+static
+size_t
+coap_serialize_int_option(unsigned int number, unsigned int current_number, uint8_t *buffer, uint32_t value)
+{
+ size_t i = 0;
+
+ if (0xFF000000 & value) ++i;
+ if (0xFFFF0000 & value) ++i;
+ if (0xFFFFFF00 & value) ++i;
+ if (0xFFFFFFFF & value) ++i;
+
+ PRINTF("OPTION %u (delta %u, len %u)\n", number, number - current_number, i);
+
+ i = coap_set_option_header(number - current_number, i, buffer);
+
+ if (0xFF000000 & value) buffer[i++] = (uint8_t) (value>>24);
+ if (0xFFFF0000 & value) buffer[i++] = (uint8_t) (value>>16);
+ if (0xFFFFFF00 & value) buffer[i++] = (uint8_t) (value>>8);
+ if (0xFFFFFFFF & value) buffer[i++] = (uint8_t) (value);
+
+ return i;
+}
+/*-----------------------------------------------------------------------------------*/
+static
+size_t
+coap_serialize_array_option(unsigned int number, unsigned int current_number, uint8_t *buffer, uint8_t *array, size_t length, char split_char)
+{
+ size_t i = 0;
+
+ if (split_char!='\0')
+ {
+ size_t j;
+ uint8_t *part_start = array;
+ uint8_t *part_end = NULL;
+ size_t temp_length;
+
+ for (j = 0; j<=length; ++j)
+ {
+ if (array[j]==split_char || j==length)
+ {
+ part_end = array + j;
+ temp_length = part_end-part_start;
+
+ i += coap_set_option_header(number - current_number, temp_length, &buffer[i]);
+ memcpy(&buffer[i], part_start, temp_length);
+ i += temp_length;
+
+ PRINTF("OPTION type %u, delta %u, len %u, part [%.*s]\n", number, number - current_number, i, temp_length, part_start);
+
+ ++j; /* skip the splitter */
+ current_number = number;
+ part_start = array + j;
+ }
+ } /* for */
+ }
+ else
+ {
+ i += coap_set_option_header(number - current_number, length, &buffer[i]);
+ memcpy(&buffer[i], array, length);
+ i += length;
+
+ PRINTF("OPTION type %u, delta %u, len %u\n", number, number - current_number, length);
+ }
+
+ return i;
+}
+/*-----------------------------------------------------------------------------------*/
+static
+size_t
+coap_serialize_multi_option(unsigned int number, unsigned int current_number, uint8_t *buffer, multi_option_t *array)
+{
+ size_t i = 0;
+ multi_option_t * j;
+
+ for (j = array; j != NULL; j= j->next)
+ {
+ i += coap_set_option_header(number - current_number, j->len, &buffer[i]);
+ current_number = number;
+ memcpy(&buffer[i], j->data, j->len);
+ i += j->len;
+ } /* for */
+
+ return i;
+}
+/*-----------------------------------------------------------------------------------*/
+static
+void
+coap_merge_multi_option(uint8_t **dst, size_t *dst_len, uint8_t *option, size_t option_len, char separator)
+{
+ /* Merge multiple options. */
+ if (*dst_len > 0)
+ {
+ /* dst already contains an option: concatenate */
+ (*dst)[*dst_len] = separator;
+ *dst_len += 1;
+
+ /* memmove handles 2-byte option headers */
+ memmove((*dst)+(*dst_len), option, option_len);
+
+ *dst_len += option_len;
+ }
+ else
+ {
+ /* dst is empty: set to option */
+ *dst = option;
+ *dst_len = option_len;
+ }
+}
+
+void
+coap_add_multi_option(multi_option_t **dst, uint8_t *option, size_t option_len, uint8_t is_static)
+{
+ multi_option_t *opt = (multi_option_t *)lwm2m_malloc(sizeof(multi_option_t));
+
+ if (opt)
+ {
+ opt->next = NULL;
+ opt->len = (uint8_t)option_len;
+ if (is_static)
+ {
+ opt->data = option;
+ opt->is_static = 1;
+ }
+ else
+ {
+ opt->is_static = 0;
+ opt->data = (uint8_t *)lwm2m_malloc(option_len);
+ if (opt->data == NULL)
+ {
+ lwm2m_free(opt);
+ return;
+ }
+ memcpy(opt->data, option, option_len);
+ }
+
+ if (*dst)
+ {
+ multi_option_t * i = *dst;
+ while (i->next)
+ {
+ i = i->next;
+ }
+ i->next = opt;
+ }
+ else
+ {
+ *dst = opt;
+ }
+ }
+}
+
+void
+free_multi_option(multi_option_t *dst)
+{
+ if (dst)
+ {
+ multi_option_t *n = dst->next;
+ dst->next = NULL;
+ if (dst->is_static == 0)
+ {
+ lwm2m_free(dst->data);
+ }
+ lwm2m_free(dst);
+ free_multi_option(n);
+ }
+}
+
+char * coap_get_multi_option_as_string(multi_option_t * option)
+{
+ size_t len = 0;
+ multi_option_t * opt;
+ char * output;
+
+ for (opt = option; opt != NULL; opt = opt->next)
+ {
+ len += opt->len + 1; // for separator
+ }
+
+ output = lwm2m_malloc(len + 1); // for String terminator
+ if (output != NULL)
+ {
+ size_t i = 0;
+
+ for (opt = option; opt != NULL; opt = opt->next)
+ {
+ output[i] = '/';
+ i += 1;
+
+ memmove(output + i, opt->data, opt->len);
+ i += opt->len;
+ }
+ output[i] = 0;
+ }
+
+ return output;
+}
+
+/*-----------------------------------------------------------------------------------*/
+static
+int
+coap_get_variable(const uint8_t *buffer, size_t length, const char *name, const char **output)
+{
+ const uint8_t *start = NULL;
+ const uint8_t *end = NULL;
+ const uint8_t *value_end = NULL;
+ size_t name_len = 0;
+
+ /*initialize the output buffer first*/
+ *output = 0;
+
+ name_len = strlen(name);
+ end = buffer + length;
+
+ for (start = buffer; start + name_len < end; ++start){
+ if ((start == buffer || start[-1] == '&') && start[name_len] == '=' &&
+ strncmp(name, (char *)start, name_len)==0) {
+
+ /* Point start to variable value */
+ start += name_len + 1;
+
+ /* Point end to the end of the value */
+ value_end = (const uint8_t *) memchr(start, '&', end - start);
+ if (value_end == NULL) {
+ value_end = end;
+ }
+
+ *output = (char *)start;
+
+ return (value_end - start);
+ }
+ }
+
+ return 0;
+}
+
+/*-----------------------------------------------------------------------------------*/
+uint16_t
+coap_get_mid()
+{
+ return ++current_mid;
+}
+/*-----------------------------------------------------------------------------------*/
+/*- MEASSAGE PROCESSING -------------------------------------------------------------*/
+/*-----------------------------------------------------------------------------------*/
+void
+coap_init_message(void *packet, coap_message_type_t type, uint8_t code, uint16_t mid)
+{
+ coap_packet_t *const coap_pkt = (coap_packet_t *) packet;
+
+ /* Important thing */
+ memset(coap_pkt, 0, sizeof(coap_packet_t));
+
+ coap_pkt->type = type;
+ coap_pkt->code = code;
+ coap_pkt->mid = mid;
+}
+
+void
+coap_free_header(void *packet)
+{
+ coap_packet_t *const coap_pkt = (coap_packet_t *) packet;
+
+ free_multi_option(coap_pkt->uri_path);
+ free_multi_option(coap_pkt->uri_query);
+ free_multi_option(coap_pkt->location_path);
+ coap_pkt->uri_path = NULL;
+ coap_pkt->uri_query = NULL;
+ coap_pkt->location_path = NULL;
+}
+
+/*-----------------------------------------------------------------------------------*/
+size_t coap_serialize_get_size(void *packet)
+{
+ coap_packet_t *const coap_pkt = (coap_packet_t *) packet;
+ size_t length = 0;
+
+ length = COAP_HEADER_LEN + coap_pkt->payload_len + coap_pkt->token_len;
+
+ if (IS_OPTION(coap_pkt, COAP_OPTION_IF_MATCH))
+ {
+ length += COAP_MAX_OPTION_HEADER_LEN + coap_pkt->if_match_len;
+ }
+ if (IS_OPTION(coap_pkt, COAP_OPTION_URI_HOST))
+ {
+ length += COAP_MAX_OPTION_HEADER_LEN + coap_pkt->uri_host_len;
+ }
+ if (IS_OPTION(coap_pkt, COAP_OPTION_ETAG))
+ {
+ length += COAP_MAX_OPTION_HEADER_LEN + coap_pkt->etag_len;
+ }
+ if (IS_OPTION(coap_pkt, COAP_OPTION_IF_NONE_MATCH))
+ {
+ // can be stored in extended fields
+ length += COAP_MAX_OPTION_HEADER_LEN;
+ }
+ if (IS_OPTION(coap_pkt, COAP_OPTION_OBSERVE))
+ {
+ // can be stored in extended fields
+ length += COAP_MAX_OPTION_HEADER_LEN;
+ }
+ if (IS_OPTION(coap_pkt, COAP_OPTION_URI_PORT))
+ {
+ // can be stored in extended fields
+ length += COAP_MAX_OPTION_HEADER_LEN;
+ }
+ if (IS_OPTION(coap_pkt, COAP_OPTION_LOCATION_PATH))
+ {
+ multi_option_t * optP;
+
+ for (optP = coap_pkt->location_path ; optP != NULL ; optP = optP->next)
+ {
+ length += COAP_MAX_OPTION_HEADER_LEN + optP->len;
+ }
+ }
+ if (IS_OPTION(coap_pkt, COAP_OPTION_URI_PATH))
+ {
+ multi_option_t * optP;
+
+ for (optP = coap_pkt->uri_path ; optP != NULL ; optP = optP->next)
+ {
+ length += COAP_MAX_OPTION_HEADER_LEN + optP->len;
+ }
+ }
+ if (IS_OPTION(coap_pkt, COAP_OPTION_CONTENT_TYPE))
+ {
+ // can be stored in extended fields
+ length += COAP_MAX_OPTION_HEADER_LEN;
+ }
+ if (IS_OPTION(coap_pkt, COAP_OPTION_MAX_AGE))
+ {
+ // can be stored in extended fields
+ length += COAP_MAX_OPTION_HEADER_LEN;
+ }
+ if (IS_OPTION(coap_pkt, COAP_OPTION_URI_QUERY))
+ {
+ multi_option_t * optP;
+
+ for (optP = coap_pkt->uri_query ; optP != NULL ; optP = optP->next)
+ {
+ length += COAP_MAX_OPTION_HEADER_LEN + optP->len;
+ }
+ }
+ if (IS_OPTION(coap_pkt, COAP_OPTION_ACCEPT))
+ {
+ length += coap_pkt->accept_num * COAP_MAX_OPTION_HEADER_LEN;
+ }
+ if (IS_OPTION(coap_pkt, COAP_OPTION_LOCATION_QUERY))
+ {
+ length += COAP_MAX_OPTION_HEADER_LEN + coap_pkt->location_query_len;
+ }
+ if (IS_OPTION(coap_pkt, COAP_OPTION_BLOCK2))
+ {
+ // can be stored in extended fields
+ length += COAP_MAX_OPTION_HEADER_LEN;
+ }
+ if (IS_OPTION(coap_pkt, COAP_OPTION_BLOCK1))
+ {
+ // can be stored in extended fields
+ length += COAP_MAX_OPTION_HEADER_LEN;
+ }
+ if (IS_OPTION(coap_pkt, COAP_OPTION_SIZE))
+ {
+ // can be stored in extended fields
+ length += COAP_MAX_OPTION_HEADER_LEN;
+ }
+ if (IS_OPTION(coap_pkt, COAP_OPTION_PROXY_URI))
+ {
+ length += COAP_MAX_OPTION_HEADER_LEN + coap_pkt->proxy_uri_len;
+ }
+
+ return length;
+}
+
+/*-----------------------------------------------------------------------------------*/
+size_t
+coap_serialize_message(void *packet, uint8_t *buffer)
+{
+ coap_packet_t *const coap_pkt = (coap_packet_t *) packet;
+ uint8_t *option;
+ unsigned int current_number = 0;
+
+ /* Initialize */
+ coap_pkt->buffer = buffer;
+ coap_pkt->version = 1;
+
+ PRINTF("-Serializing MID %u to %p, ", coap_pkt->mid, coap_pkt->buffer);
+
+ /* set header fields */
+ coap_pkt->buffer[0] = 0x00;
+ coap_pkt->buffer[0] |= COAP_HEADER_VERSION_MASK & (coap_pkt->version)<<COAP_HEADER_VERSION_POSITION;
+ coap_pkt->buffer[0] |= COAP_HEADER_TYPE_MASK & (coap_pkt->type)<<COAP_HEADER_TYPE_POSITION;
+ coap_pkt->buffer[0] |= COAP_HEADER_TOKEN_LEN_MASK & (coap_pkt->token_len)<<COAP_HEADER_TOKEN_LEN_POSITION;
+ coap_pkt->buffer[1] = coap_pkt->code;
+ coap_pkt->buffer[2] = (uint8_t) ((coap_pkt->mid)>>8);
+ coap_pkt->buffer[3] = (uint8_t) (coap_pkt->mid);
+
+ /* set Token */
+ PRINTF("Token (len %u)", coap_pkt->token_len);
+ option = coap_pkt->buffer + COAP_HEADER_LEN;
+ for (current_number=0; current_number<coap_pkt->token_len; ++current_number)
+ {
+ PRINTF(" %02X", coap_pkt->token[current_number]);
+ *option = coap_pkt->token[current_number];
+ ++option;
+ }
+ PRINTF("-\n");
+
+ /* Serialize options */
+ current_number = 0;
+
+ PRINTF("-Serializing options at %p-\n", option);
+
+ /* The options must be serialized in the order of their number */
+ COAP_SERIALIZE_BYTE_OPTION( COAP_OPTION_IF_MATCH, if_match, "If-Match")
+ COAP_SERIALIZE_STRING_OPTION( COAP_OPTION_URI_HOST, uri_host, '\0', "Uri-Host")
+ COAP_SERIALIZE_BYTE_OPTION( COAP_OPTION_ETAG, etag, "ETag")
+ COAP_SERIALIZE_INT_OPTION( COAP_OPTION_IF_NONE_MATCH, content_type-coap_pkt->content_type, "If-None-Match") /* hack to get a zero field */
+ COAP_SERIALIZE_INT_OPTION( COAP_OPTION_OBSERVE, observe, "Observe")
+ COAP_SERIALIZE_INT_OPTION( COAP_OPTION_URI_PORT, uri_port, "Uri-Port")
+ COAP_SERIALIZE_MULTI_OPTION( COAP_OPTION_LOCATION_PATH, location_path, "Location-Path")
+ COAP_SERIALIZE_MULTI_OPTION( COAP_OPTION_URI_PATH, uri_path, "Uri-Path")
+ COAP_SERIALIZE_INT_OPTION( COAP_OPTION_CONTENT_TYPE, content_type, "Content-Format")
+ COAP_SERIALIZE_INT_OPTION( COAP_OPTION_MAX_AGE, max_age, "Max-Age")
+ COAP_SERIALIZE_MULTI_OPTION( COAP_OPTION_URI_QUERY, uri_query, "Uri-Query")
+ COAP_SERIALIZE_ACCEPT_OPTION( COAP_OPTION_ACCEPT, accept, "Accept")
+ COAP_SERIALIZE_STRING_OPTION( COAP_OPTION_LOCATION_QUERY, location_query, '&', "Location-Query")
+ COAP_SERIALIZE_BLOCK_OPTION( COAP_OPTION_BLOCK2, block2, "Block2")
+ COAP_SERIALIZE_BLOCK_OPTION( COAP_OPTION_BLOCK1, block1, "Block1")
+ COAP_SERIALIZE_INT_OPTION( COAP_OPTION_SIZE, size, "Size")
+ COAP_SERIALIZE_STRING_OPTION( COAP_OPTION_PROXY_URI, proxy_uri, '\0', "Proxy-Uri")
+
+ PRINTF("-Done serializing at %p----\n", option);
+
+ /* Free allocated header fields */
+ coap_free_header(packet);
+
+ /* Pack payload */
+ /* Payload marker */
+ if (coap_pkt->payload_len)
+ {
+ *option = 0xFF;
+ ++option;
+ }
+
+ memmove(option, coap_pkt->payload, coap_pkt->payload_len);
+
+ PRINTF("-Done %u B (header len %u, payload len %u)-\n", coap_pkt->payload_len + option - buffer, option - buffer, coap_pkt->payload_len);
+
+ PRINTF("Dump [0x%02X %02X %02X %02X %02X %02X %02X %02X]\n",
+ coap_pkt->buffer[0],
+ coap_pkt->buffer[1],
+ coap_pkt->buffer[2],
+ coap_pkt->buffer[3],
+ coap_pkt->buffer[4],
+ coap_pkt->buffer[5],
+ coap_pkt->buffer[6],
+ coap_pkt->buffer[7]
+ );
+
+ return (option - buffer) + coap_pkt->payload_len; /* packet length */
+}
+/*-----------------------------------------------------------------------------------*/
+coap_status_t
+coap_parse_message(void *packet, uint8_t *data, uint16_t data_len)
+{
+ coap_packet_t *const coap_pkt = (coap_packet_t *) packet;
+ uint8_t *current_option;
+ unsigned int option_number = 0;
+ unsigned int option_delta = 0;
+ size_t option_length = 0;
+ unsigned int *x;
+
+ /* Initialize packet */
+ memset(coap_pkt, 0, sizeof(coap_packet_t));
+
+ /* pointer to packet bytes */
+ coap_pkt->buffer = data;
+
+ /* parse header fields */
+ coap_pkt->version = (COAP_HEADER_VERSION_MASK & coap_pkt->buffer[0])>>COAP_HEADER_VERSION_POSITION;
+ coap_pkt->type = (COAP_HEADER_TYPE_MASK & coap_pkt->buffer[0])>>COAP_HEADER_TYPE_POSITION;
+ coap_pkt->token_len = MIN(COAP_TOKEN_LEN, (COAP_HEADER_TOKEN_LEN_MASK & coap_pkt->buffer[0])>>COAP_HEADER_TOKEN_LEN_POSITION);
+ coap_pkt->code = coap_pkt->buffer[1];
+ coap_pkt->mid = coap_pkt->buffer[2]<<8 | coap_pkt->buffer[3];
+
+ if (coap_pkt->version != 1)
+ {
+ coap_error_message = "CoAP version must be 1";
+ return BAD_REQUEST_4_00;
+ }
+
+ current_option = data + COAP_HEADER_LEN;
+
+ if (coap_pkt->token_len != 0)
+ {
+ memcpy(coap_pkt->token, current_option, coap_pkt->token_len);
+ SET_OPTION(coap_pkt, COAP_OPTION_TOKEN);
+
+ PRINTF("Token (len %u) [0x%02X%02X%02X%02X%02X%02X%02X%02X]\n", coap_pkt->token_len,
+ coap_pkt->token[0],
+ coap_pkt->token[1],
+ coap_pkt->token[2],
+ coap_pkt->token[3],
+ coap_pkt->token[4],
+ coap_pkt->token[5],
+ coap_pkt->token[6],
+ coap_pkt->token[7]
+ ); /*FIXME always prints 8 bytes */
+ }
+
+ /* parse options */
+ current_option += coap_pkt->token_len;
+
+ while (current_option < data+data_len)
+ {
+ /* Payload marker 0xFF, currently only checking for 0xF* because rest is reserved */
+ if ((current_option[0] & 0xF0)==0xF0)
+ {
+ coap_pkt->payload = ++current_option;
+ coap_pkt->payload_len = data_len - (coap_pkt->payload - data);
+
+ break;
+ }
+
+ option_delta = current_option[0]>>4;
+ option_length = current_option[0] & 0x0F;
+ ++current_option;
+
+ /* avoids code duplication without function overhead */
+ x = &option_delta;
+ do
+ {
+ if (*x==13)
+ {
+ *x += current_option[0];
+ ++current_option;
+ }
+ else if (*x==14)
+ {
+ *x += 255;
+ *x += current_option[0]<<8;
+ ++current_option;
+ *x += current_option[0];
+ ++current_option;
+ }
+ }
+ while (x!=(unsigned int *)&option_length && (x=(unsigned int *)&option_length));
+
+ option_number += option_delta;
+
+ PRINTF("OPTION %u (delta %u, len %u): ", option_number, option_delta, option_length);
+
+ SET_OPTION(coap_pkt, option_number);
+
+ switch (option_number)
+ {
+ case COAP_OPTION_CONTENT_TYPE:
+ coap_pkt->content_type = coap_parse_int_option(current_option, option_length);
+ PRINTF("Content-Format [%u]\n", coap_pkt->content_type);
+ break;
+ case COAP_OPTION_MAX_AGE:
+ coap_pkt->max_age = coap_parse_int_option(current_option, option_length);
+ PRINTF("Max-Age [%lu]\n", coap_pkt->max_age);
+ break;
+ case COAP_OPTION_ETAG:
+ coap_pkt->etag_len = (uint8_t)(MIN(COAP_ETAG_LEN, option_length));
+ memcpy(coap_pkt->etag, current_option, coap_pkt->etag_len);
+ PRINTF("ETag %u [0x%02X%02X%02X%02X%02X%02X%02X%02X]\n", coap_pkt->etag_len,
+ coap_pkt->etag[0],
+ coap_pkt->etag[1],
+ coap_pkt->etag[2],
+ coap_pkt->etag[3],
+ coap_pkt->etag[4],
+ coap_pkt->etag[5],
+ coap_pkt->etag[6],
+ coap_pkt->etag[7]
+ ); /*FIXME always prints 8 bytes */
+ break;
+ case COAP_OPTION_ACCEPT:
+ if (coap_pkt->accept_num < COAP_MAX_ACCEPT_NUM)
+ {
+ coap_pkt->accept[coap_pkt->accept_num] = coap_parse_int_option(current_option, option_length);
+ coap_pkt->accept_num += 1;
+ PRINTF("Accept [%u]\n", coap_pkt->content_type);
+ }
+ break;
+ case COAP_OPTION_IF_MATCH:
+ /*FIXME support multiple ETags */
+ coap_pkt->if_match_len = (uint8_t)(MIN(COAP_ETAG_LEN, option_length));
+ memcpy(coap_pkt->if_match, current_option, coap_pkt->if_match_len);
+ PRINTF("If-Match %u [0x%02X%02X%02X%02X%02X%02X%02X%02X]\n", coap_pkt->if_match_len,
+ coap_pkt->if_match[0],
+ coap_pkt->if_match[1],
+ coap_pkt->if_match[2],
+ coap_pkt->if_match[3],
+ coap_pkt->if_match[4],
+ coap_pkt->if_match[5],
+ coap_pkt->if_match[6],
+ coap_pkt->if_match[7]
+ ); /*FIXME always prints 8 bytes */
+ break;
+ case COAP_OPTION_IF_NONE_MATCH:
+ coap_pkt->if_none_match = 1;
+ PRINTF("If-None-Match\n");
+ break;
+
+ case COAP_OPTION_URI_HOST:
+ coap_pkt->uri_host = current_option;
+ coap_pkt->uri_host_len = option_length;
+ PRINTF("Uri-Host [%.*s]\n", coap_pkt->uri_host_len, coap_pkt->uri_host);
+ break;
+ case COAP_OPTION_URI_PORT:
+ coap_pkt->uri_port = coap_parse_int_option(current_option, option_length);
+ PRINTF("Uri-Port [%u]\n", coap_pkt->uri_port);
+ break;
+ case COAP_OPTION_URI_PATH:
+ /* coap_merge_multi_option() operates in-place on the IPBUF, but final packet field should be const string -> cast to string */
+ // coap_merge_multi_option( (char **) &(coap_pkt->uri_path), &(coap_pkt->uri_path_len), current_option, option_length, 0);
+ coap_add_multi_option( &(coap_pkt->uri_path), current_option, option_length, 1);
+ PRINTF("Uri-Path [%.*s]\n", option_length, current_option);
+ break;
+ case COAP_OPTION_URI_QUERY:
+ /* coap_merge_multi_option() operates in-place on the IPBUF, but final packet field should be const string -> cast to string */
+ // coap_merge_multi_option( (char **) &(coap_pkt->uri_query), &(coap_pkt->uri_query_len), current_option, option_length, '&');
+ coap_add_multi_option( &(coap_pkt->uri_query), current_option, option_length, 1);
+ PRINTF("Uri-Query [%.*s]\n", option_length, current_option);
+ break;
+
+ case COAP_OPTION_LOCATION_PATH:
+ coap_add_multi_option( &(coap_pkt->location_path), current_option, option_length, 1);
+ break;
+ case COAP_OPTION_LOCATION_QUERY:
+ /* coap_merge_multi_option() operates in-place on the IPBUF, but final packet field should be const string -> cast to string */
+ coap_merge_multi_option( &(coap_pkt->location_query), &(coap_pkt->location_query_len), current_option, option_length, '&');
+ PRINTF("Location-Query [%.*s]\n", option_length, current_option);
+ break;
+
+ case COAP_OPTION_PROXY_URI:
+ /*FIXME check for own end-point */
+ coap_pkt->proxy_uri = current_option;
+ coap_pkt->proxy_uri_len = option_length;
+ /*TODO length > 270 not implemented (actually not required) */
+ PRINTF("Proxy-Uri NOT IMPLEMENTED [%.*s]\n", coap_pkt->proxy_uri_len, coap_pkt->proxy_uri);
+ coap_error_message = "This is a constrained server (Contiki)";
+ return PROXYING_NOT_SUPPORTED_5_05;
+ break;
+
+ case COAP_OPTION_OBSERVE:
+ coap_pkt->observe = coap_parse_int_option(current_option, option_length);
+ PRINTF("Observe [%lu]\n", coap_pkt->observe);
+ break;
+ case COAP_OPTION_BLOCK2:
+ coap_pkt->block2_num = coap_parse_int_option(current_option, option_length);
+ coap_pkt->block2_more = (coap_pkt->block2_num & 0x08)>>3;
+ coap_pkt->block2_size = 16 << (coap_pkt->block2_num & 0x07);
+ coap_pkt->block2_offset = (coap_pkt->block2_num & ~0x0000000F)<<(coap_pkt->block2_num & 0x07);
+ coap_pkt->block2_num >>= 4;
+ PRINTF("Block2 [%lu%s (%u B/blk)]\n", coap_pkt->block2_num, coap_pkt->block2_more ? "+" : "", coap_pkt->block2_size);
+ break;
+ case COAP_OPTION_BLOCK1:
+ coap_pkt->block1_num = coap_parse_int_option(current_option, option_length);
+ coap_pkt->block1_more = (coap_pkt->block1_num & 0x08)>>3;
+ coap_pkt->block1_size = 16 << (coap_pkt->block1_num & 0x07);
+ coap_pkt->block1_offset = (coap_pkt->block1_num & ~0x0000000F)<<(coap_pkt->block1_num & 0x07);
+ coap_pkt->block1_num >>= 4;
+ PRINTF("Block1 [%lu%s (%u B/blk)]\n", coap_pkt->block1_num, coap_pkt->block1_more ? "+" : "", coap_pkt->block1_size);
+ break;
+ case COAP_OPTION_SIZE:
+ coap_pkt->size = coap_parse_int_option(current_option, option_length);
+ PRINTF("Size [%lu]\n", coap_pkt->size);
+ break;
+ default:
+ PRINTF("unknown (%u)\n", option_number);
+ /* Check if critical (odd) */
+ if (option_number & 1)
+ {
+ coap_error_message = "Unsupported critical option";
+ return BAD_OPTION_4_02;
+ }
+ }
+
+ current_option += option_length;
+ } /* for */
+ PRINTF("-Done parsing-------\n");
+
+
+
+ return NO_ERROR;
+}
+/*-----------------------------------------------------------------------------------*/
+/*- REST FRAMEWORK FUNCTIONS --------------------------------------------------------*/
+/*-----------------------------------------------------------------------------------*/
+int
+coap_get_query_variable(void *packet, const char *name, const char **output)
+{
+/*
+ coap_packet_t *const coap_pkt = (coap_packet_t *) packet;
+
+ if (IS_OPTION(coap_pkt, COAP_OPTION_URI_QUERY)) {
+ return coap_get_variable(coap_pkt->uri_query, coap_pkt->uri_query_len, name, output);
+ }
+*/
+ return 0;
+}
+
+int
+coap_get_post_variable(void *packet, const char *name, const char **output)
+{
+ coap_packet_t *const coap_pkt = (coap_packet_t *) packet;
+
+ if (coap_pkt->payload_len) {
+ return coap_get_variable(coap_pkt->payload, coap_pkt->payload_len, name, output);
+ }
+ return 0;
+}
+/*-----------------------------------------------------------------------------------*/
+int
+coap_set_status_code(void *packet, unsigned int code)
+{
+ if (code <= 0xFF)
+ {
+ ((coap_packet_t *)packet)->code = (uint8_t) code;
+ return 1;
+ }
+ else
+ {
+ return 0;
+ }
+}
+/*-----------------------------------------------------------------------------------*/
+/*- HEADER OPTION GETTERS AND SETTERS -----------------------------------------------*/
+/*-----------------------------------------------------------------------------------*/
+unsigned int
+coap_get_header_content_type(void *packet)
+{
+ coap_packet_t *const coap_pkt = (coap_packet_t *) packet;
+
+ if (!IS_OPTION(coap_pkt, COAP_OPTION_CONTENT_TYPE)) return -1;
+
+ return coap_pkt->content_type;
+}
+
+int
+coap_set_header_content_type(void *packet, unsigned int content_type)
+{
+ coap_packet_t *const coap_pkt = (coap_packet_t *) packet;
+
+ coap_pkt->content_type = (coap_content_type_t) content_type;
+ SET_OPTION(coap_pkt, COAP_OPTION_CONTENT_TYPE);
+ return 1;
+}
+/*-----------------------------------------------------------------------------------*/
+int
+coap_get_header_accept(void *packet, const uint16_t **accept)
+{
+ coap_packet_t *const coap_pkt = (coap_packet_t *) packet;
+
+ if (!IS_OPTION(coap_pkt, COAP_OPTION_ACCEPT)) return 0;
+
+ *accept = coap_pkt->accept;
+ return coap_pkt->accept_num;
+}
+
+int
+coap_set_header_accept(void *packet, uint16_t accept)
+{
+ coap_packet_t *const coap_pkt = (coap_packet_t *) packet;
+
+ if (coap_pkt->accept_num < COAP_MAX_ACCEPT_NUM)
+ {
+ coap_pkt->accept[coap_pkt->accept_num] = accept;
+ coap_pkt->accept_num += 1;
+
+ SET_OPTION(coap_pkt, COAP_OPTION_ACCEPT);
+ }
+ return coap_pkt->accept_num;
+}
+/*-----------------------------------------------------------------------------------*/
+int
+coap_get_header_max_age(void *packet, uint32_t *age)
+{
+ coap_packet_t *const coap_pkt = (coap_packet_t *) packet;
+
+ if (!IS_OPTION(coap_pkt, COAP_OPTION_MAX_AGE)) {
+ *age = COAP_DEFAULT_MAX_AGE;
+ } else {
+ *age = coap_pkt->max_age;
+ }
+ return 1;
+}
+
+int
+coap_set_header_max_age(void *packet, uint32_t age)
+{
+ coap_packet_t *const coap_pkt = (coap_packet_t *) packet;
+
+ coap_pkt->max_age = age;
+ SET_OPTION(coap_pkt, COAP_OPTION_MAX_AGE);
+ return 1;
+}
+/*-----------------------------------------------------------------------------------*/
+int
+coap_get_header_etag(void *packet, const uint8_t **etag)
+{
+ coap_packet_t *const coap_pkt = (coap_packet_t *) packet;
+
+ if (!IS_OPTION(coap_pkt, COAP_OPTION_ETAG)) return 0;
+
+ *etag = coap_pkt->etag;
+ return coap_pkt->etag_len;
+}
+
+int
+coap_set_header_etag(void *packet, const uint8_t *etag, size_t etag_len)
+{
+ coap_packet_t *const coap_pkt = (coap_packet_t *) packet;
+
+ coap_pkt->etag_len = (uint8_t)(MIN(COAP_ETAG_LEN, etag_len));
+ memcpy(coap_pkt->etag, etag, coap_pkt->etag_len);
+
+ SET_OPTION(coap_pkt, COAP_OPTION_ETAG);
+ return coap_pkt->etag_len;
+}
+/*-----------------------------------------------------------------------------------*/
+/*FIXME support multiple ETags */
+int
+coap_get_header_if_match(void *packet, const uint8_t **etag)
+{
+ coap_packet_t *const coap_pkt = (coap_packet_t *) packet;
+
+ if (!IS_OPTION(coap_pkt, COAP_OPTION_IF_MATCH)) return 0;
+
+ *etag = coap_pkt->if_match;
+ return coap_pkt->if_match_len;
+}
+
+int
+coap_set_header_if_match(void *packet, const uint8_t *etag, size_t etag_len)
+{
+ coap_packet_t *const coap_pkt = (coap_packet_t *) packet;
+
+ coap_pkt->if_match_len = (uint8_t)(MIN(COAP_ETAG_LEN, etag_len));
+ memcpy(coap_pkt->if_match, etag, coap_pkt->if_match_len);
+
+ SET_OPTION(coap_pkt, COAP_OPTION_IF_MATCH);
+ return coap_pkt->if_match_len;
+}
+/*-----------------------------------------------------------------------------------*/
+int
+coap_get_header_if_none_match(void *packet)
+{
+ return IS_OPTION((coap_packet_t *)packet, COAP_OPTION_IF_NONE_MATCH) ? 1 : 0;
+}
+
+int
+coap_set_header_if_none_match(void *packet)
+{
+ SET_OPTION((coap_packet_t *)packet, COAP_OPTION_IF_NONE_MATCH);
+ return 1;
+}
+/*-----------------------------------------------------------------------------------*/
+int
+coap_get_header_token(void *packet, const uint8_t **token)
+{
+ coap_packet_t *const coap_pkt = (coap_packet_t *) packet;
+
+ if (!IS_OPTION(coap_pkt, COAP_OPTION_TOKEN)) return 0;
+
+ *token = coap_pkt->token;
+ return coap_pkt->token_len;
+}
+
+int
+coap_set_header_token(void *packet, const uint8_t *token, size_t token_len)
+{
+ coap_packet_t *const coap_pkt = (coap_packet_t *) packet;
+
+ coap_pkt->token_len = (uint8_t)(MIN(COAP_TOKEN_LEN, token_len));
+ memcpy(coap_pkt->token, token, coap_pkt->token_len);
+
+ SET_OPTION(coap_pkt, COAP_OPTION_TOKEN);
+ return coap_pkt->token_len;
+}
+/*-----------------------------------------------------------------------------------*/
+int
+coap_get_header_proxy_uri(void *packet, const char **uri)
+{
+ coap_packet_t *const coap_pkt = (coap_packet_t *) packet;
+
+ if (!IS_OPTION(coap_pkt, COAP_OPTION_PROXY_URI)) return 0;
+
+ *uri = (const char *)coap_pkt->proxy_uri;
+ return coap_pkt->proxy_uri_len;
+}
+
+int
+coap_set_header_proxy_uri(void *packet, const char *uri)
+{
+ coap_packet_t *const coap_pkt = (coap_packet_t *) packet;
+
+ coap_pkt->proxy_uri = (uint8_t *)uri;
+ coap_pkt->proxy_uri_len = strlen(uri);
+
+ SET_OPTION(coap_pkt, COAP_OPTION_PROXY_URI);
+ return coap_pkt->proxy_uri_len;
+}
+/*-----------------------------------------------------------------------------------*/
+int
+coap_get_header_uri_host(void *packet, const char **host)
+{
+ coap_packet_t *const coap_pkt = (coap_packet_t *) packet;
+
+ if (!IS_OPTION(coap_pkt, COAP_OPTION_URI_HOST)) return 0;
+
+ *host = (char *)coap_pkt->uri_host;
+ return coap_pkt->uri_host_len;
+}
+
+int
+coap_set_header_uri_host(void *packet, const char *host)
+{
+ coap_packet_t *const coap_pkt = (coap_packet_t *) packet;
+
+ coap_pkt->uri_host = (uint8_t *)host;
+ coap_pkt->uri_host_len = strlen(host);
+
+ SET_OPTION(coap_pkt, COAP_OPTION_URI_HOST);
+ return coap_pkt->uri_host_len;
+}
+/*-----------------------------------------------------------------------------------*/
+int
+coap_get_header_uri_path(void *packet, const char **path)
+{
+ coap_packet_t *const coap_pkt = (coap_packet_t *) packet;
+
+ if (!IS_OPTION(coap_pkt, COAP_OPTION_URI_PATH)) return 0;
+
+ *path = NULL; //coap_pkt->uri_path;
+ return 0; //coap_pkt->uri_path_len;
+}
+
+int
+coap_set_header_uri_path(void *packet, const char *path)
+{
+ coap_packet_t *coap_pkt = (coap_packet_t *) packet;
+ int length = 0;
+
+ free_multi_option(coap_pkt->uri_path);
+ coap_pkt->uri_path = NULL;
+
+ if (path[0]=='/') ++path;
+
+ do
+ {
+ int i = 0;
+
+ while (path[i] != 0 && path[i] != '/') i++;
+ coap_add_multi_option(&(coap_pkt->uri_path), (uint8_t *)path, i, 0);
+
+ if (path[i] == '/') i++;
+ path += i;
+ length += i;
+ } while (path[0] != 0);
+
+ SET_OPTION(coap_pkt, COAP_OPTION_URI_PATH);
+ return length;
+}
+
+int
+coap_set_header_uri_path_segment(void *packet, const char *segment)
+{
+ coap_packet_t *coap_pkt = (coap_packet_t *) packet;
+ int length;
+
+ if (segment == NULL || segment[0] == 0)
+ {
+ coap_add_multi_option(&(coap_pkt->uri_path), NULL, 0, 1);
+ length = 0;
+ }
+ else
+ {
+ length = strlen(segment);
+ coap_add_multi_option(&(coap_pkt->uri_path), (uint8_t *)segment, length, 0);
+ }
+
+ SET_OPTION(coap_pkt, COAP_OPTION_URI_PATH);
+ return length;
+}
+/*-----------------------------------------------------------------------------------*/
+int
+coap_get_header_uri_query(void *packet, const char **query)
+{
+ coap_packet_t *const coap_pkt = (coap_packet_t *) packet;
+
+ if (!IS_OPTION(coap_pkt, COAP_OPTION_URI_QUERY)) return 0;
+
+ *query = NULL; //coap_pkt->uri_query;
+ return 0; //coap_pkt->uri_query_len;
+}
+
+int
+coap_set_header_uri_query(void *packet, const char *query)
+{
+ int length = 0;
+ coap_packet_t *const coap_pkt = (coap_packet_t *) packet;
+
+ free_multi_option(coap_pkt->uri_query);
+ coap_pkt->uri_query = NULL;
+
+ if (query[0]=='?') ++query;
+
+ do
+ {
+ int i = 0;
+
+ while (query[i] != 0 && query[i] != '&') i++;
+ coap_add_multi_option(&(coap_pkt->uri_query), (uint8_t *)query, i, 0);
+
+ if (query[i] == '&') i++;
+ query += i;
+ length += i;
+ } while (query[0] != 0);
+
+ SET_OPTION(coap_pkt, COAP_OPTION_URI_QUERY);
+ return length;
+ }
+/*-----------------------------------------------------------------------------------*/
+int
+coap_get_header_location_path(void *packet, const char **path)
+{
+ coap_packet_t *const coap_pkt = (coap_packet_t *) packet;
+
+ if (!IS_OPTION(coap_pkt, COAP_OPTION_LOCATION_PATH)) return 0;
+
+ *path = NULL; //coap_pkt->location_path;
+ return 0; //coap_pkt->location_path_len;
+}
+
+int
+coap_set_header_location_path(void *packet, const char *path)
+{
+ coap_packet_t *coap_pkt = (coap_packet_t *) packet;
+ int length = 0;
+
+ free_multi_option(coap_pkt->location_path);
+ coap_pkt->location_path = NULL;
+
+ if (path[0]=='/') ++path;
+
+ do
+ {
+ int i = 0;
+
+ while (path[i] != 0 && path[i] != '/') i++;
+ coap_add_multi_option(&(coap_pkt->location_path), (uint8_t *)path, i, 0);
+
+ if (path[i] == '/') i++;
+ path += i;
+ length += i;
+ } while (path[0] != 0);
+
+ SET_OPTION(coap_pkt, COAP_OPTION_LOCATION_PATH);
+ return length;
+}
+/*-----------------------------------------------------------------------------------*/
+int
+coap_get_header_location_query(void *packet, const char **query)
+{
+ coap_packet_t *const coap_pkt = (coap_packet_t *) packet;
+
+ if (!IS_OPTION(coap_pkt, COAP_OPTION_LOCATION_QUERY)) return 0;
+
+ *query = (const char*)coap_pkt->location_query;
+ return coap_pkt->location_query_len;
+}
+
+int
+coap_set_header_location_query(void *packet, char *query)
+{
+ coap_packet_t *const coap_pkt = (coap_packet_t *) packet;
+
+ while (query[0]=='?') ++query;
+
+ coap_pkt->location_query = (uint8_t *)query;
+ coap_pkt->location_query_len = strlen(query);
+
+ SET_OPTION(coap_pkt, COAP_OPTION_LOCATION_QUERY);
+ return coap_pkt->location_query_len;
+}
+/*-----------------------------------------------------------------------------------*/
+int
+coap_get_header_observe(void *packet, uint32_t *observe)
+{
+ coap_packet_t *const coap_pkt = (coap_packet_t *) packet;
+
+ if (!IS_OPTION(coap_pkt, COAP_OPTION_OBSERVE)) return 0;
+
+ *observe = coap_pkt->observe;
+ return 1;
+}
+
+int
+coap_set_header_observe(void *packet, uint32_t observe)
+{
+ coap_packet_t *const coap_pkt = (coap_packet_t *) packet;
+
+ coap_pkt->observe = 0x00FFFFFF & observe;
+ SET_OPTION(coap_pkt, COAP_OPTION_OBSERVE);
+ return 1;
+}
+/*-----------------------------------------------------------------------------------*/
+int
+coap_get_header_block2(void *packet, uint32_t *num, uint8_t *more, uint16_t *size, uint32_t *offset)
+{
+ coap_packet_t *const coap_pkt = (coap_packet_t *) packet;
+
+ if (!IS_OPTION(coap_pkt, COAP_OPTION_BLOCK2)) return 0;
+
+ /* pointers may be NULL to get only specific block parameters */
+ if (num!=NULL) *num = coap_pkt->block2_num;
+ if (more!=NULL) *more = coap_pkt->block2_more;
+ if (size!=NULL) *size = coap_pkt->block2_size;
+ if (offset!=NULL) *offset = coap_pkt->block2_offset;
+
+ return 1;
+}
+
+int
+coap_set_header_block2(void *packet, uint32_t num, uint8_t more, uint16_t size)
+{
+ coap_packet_t *const coap_pkt = (coap_packet_t *) packet;
+
+ if (size<16) return 0;
+ if (size>2048) return 0;
+ if (num>0x0FFFFF) return 0;
+
+ coap_pkt->block2_num = num;
+ coap_pkt->block2_more = more ? 1 : 0;
+ coap_pkt->block2_size = size;
+
+ SET_OPTION(coap_pkt, COAP_OPTION_BLOCK2);
+ return 1;
+}
+/*-----------------------------------------------------------------------------------*/
+int
+coap_get_header_block1(void *packet, uint32_t *num, uint8_t *more, uint16_t *size, uint32_t *offset)
+{
+ coap_packet_t *const coap_pkt = (coap_packet_t *) packet;
+
+ if (!IS_OPTION(coap_pkt, COAP_OPTION_BLOCK1)) return 0;
+
+ /* pointers may be NULL to get only specific block parameters */
+ if (num!=NULL) *num = coap_pkt->block1_num;
+ if (more!=NULL) *more = coap_pkt->block1_more;
+ if (size!=NULL) *size = coap_pkt->block1_size;
+ if (offset!=NULL) *offset = coap_pkt->block1_offset;
+
+ return 1;
+}
+
+int
+coap_set_header_block1(void *packet, uint32_t num, uint8_t more, uint16_t size)
+{
+ coap_packet_t *const coap_pkt = (coap_packet_t *) packet;
+
+ if (size<16) return 0;
+ if (size>2048) return 0;
+ if (num>0x0FFFFF) return 0;
+
+ coap_pkt->block1_num = num;
+ coap_pkt->block1_more = more;
+ coap_pkt->block1_size = size;
+
+ SET_OPTION(coap_pkt, COAP_OPTION_BLOCK1);
+ return 1;
+}
+/*-----------------------------------------------------------------------------------*/
+int
+coap_get_header_size(void *packet, uint32_t *size)
+{
+ coap_packet_t *const coap_pkt = (coap_packet_t *) packet;
+
+ if (!IS_OPTION(coap_pkt, COAP_OPTION_SIZE)) return 0;
+
+ *size = coap_pkt->size;
+ return 1;
+}
+
+int
+coap_set_header_size(void *packet, uint32_t size)
+{
+ coap_packet_t *const coap_pkt = (coap_packet_t *) packet;
+
+ coap_pkt->size = size;
+ SET_OPTION(coap_pkt, COAP_OPTION_SIZE);
+ return 1;
+}
+/*-----------------------------------------------------------------------------------*/
+/*- PAYLOAD -------------------------------------------------------------------------*/
+/*-----------------------------------------------------------------------------------*/
+int
+coap_get_payload(void *packet, const uint8_t **payload)
+{
+ coap_packet_t *const coap_pkt = (coap_packet_t *) packet;
+
+ if (coap_pkt->payload) {
+ *payload = coap_pkt->payload;
+ return coap_pkt->payload_len;
+ } else {
+ *payload = NULL;
+ return 0;
+ }
+}
+
+int
+coap_set_payload(void *packet, const void *payload, size_t length)
+{
+ coap_packet_t *const coap_pkt = (coap_packet_t *) packet;
+
+ coap_pkt->payload = (uint8_t *) payload;
+ coap_pkt->payload_len = (uint16_t)(length);
+
+ return coap_pkt->payload_len;
+}
+/*-----------------------------------------------------------------------------------*/