129 lines
4.9 KiB
C
129 lines
4.9 KiB
C
/*
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* Copyright (c) 2013, 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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* ETSI Plugtest resource
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* \author
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* Matthias Kovatsch <kovatsch@inf.ethz.ch>
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*/
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#include <string.h>
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#include "sys/cc.h"
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#include "rest-engine.h"
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#include "er-coap.h"
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#include "er-plugtest.h"
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static void res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset);
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static void res_put_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset);
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RESOURCE(
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res_plugtest_large_update,
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"title=\"Large resource that can be updated using PUT method\";rt=\"block\";sz=\"" TO_STRING(MAX_PLUGFEST_BODY) "\"",
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res_get_handler,
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NULL,
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res_put_handler,
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NULL);
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static int32_t large_update_size = 0;
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static uint8_t large_update_store[MAX_PLUGFEST_BODY] = { 0 };
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static unsigned int large_update_ct = APPLICATION_OCTET_STREAM;
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static void
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res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
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{
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/* Check the offset for boundaries of the resource data. */
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if(*offset >= large_update_size) {
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REST.set_response_status(response, REST.status.BAD_OPTION);
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/* A block error message should not exceed the minimum block size (16). */
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const char *error_msg = "BlockOutOfScope";
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REST.set_response_payload(response, error_msg, strlen(error_msg));
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return;
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}
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REST.set_response_payload(response, large_update_store + *offset,
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MIN(large_update_size - *offset, preferred_size));
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REST.set_header_content_type(response, large_update_ct);
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/* IMPORTANT for chunk-wise resources: Signal chunk awareness to REST engine. */
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*offset += preferred_size;
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/* Signal end of resource representation. */
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if(*offset >= large_update_size) {
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*offset = -1;
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}
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}
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static void
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res_put_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
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{
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coap_packet_t *const coap_req = (coap_packet_t *)request;
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uint8_t *incoming = NULL;
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size_t len = 0;
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unsigned int ct = -1;
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if(!REST.get_header_content_type(request, &ct)) {
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REST.set_response_status(response, REST.status.BAD_REQUEST);
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const char *error_msg = "NoContentType";
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REST.set_response_payload(response, error_msg, strlen(error_msg));
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return;
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}
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if((len = REST.get_request_payload(request, (const uint8_t **)&incoming))) {
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if(coap_req->block1_num * coap_req->block1_size + len <= sizeof(large_update_store)) {
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memcpy(
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large_update_store + coap_req->block1_num * coap_req->block1_size,
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incoming, len);
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large_update_size = coap_req->block1_num * coap_req->block1_size + len;
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large_update_ct = ct;
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REST.set_response_status(response, REST.status.CHANGED);
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coap_set_header_block1(response, coap_req->block1_num, 0,
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coap_req->block1_size);
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} else {
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REST.set_response_status(response,
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REST.status.REQUEST_ENTITY_TOO_LARGE);
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REST.set_response_payload(
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response,
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buffer,
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snprintf((char *)buffer, MAX_PLUGFEST_PAYLOAD, "%uB max.",
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sizeof(large_update_store)));
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return;
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}
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} else {
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REST.set_response_status(response, REST.status.BAD_REQUEST);
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const char *error_msg = "NoPayload";
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REST.set_response_payload(response, error_msg, strlen(error_msg));
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return;
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}
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}
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