| /* |
| * Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. Neither the name of the Institute nor the names of its contributors |
| * may be used to endorse or promote products derived from this software |
| * without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * |
| * This file is part of the Contiki operating system. |
| */ |
| |
| /** |
| * \file |
| * ETSI Plugtest resource |
| * \author |
| * Matthias Kovatsch <kovatsch@inf.ethz.ch> |
| */ |
| |
| #include <string.h> |
| #include "sys/cc.h" |
| #include "rest-engine.h" |
| #include "er-coap.h" |
| #include "er-plugtest.h" |
| |
| static void res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset); |
| static void res_put_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset); |
| |
| RESOURCE( |
| res_plugtest_large_update, |
| "title=\"Large resource that can be updated using PUT method\";rt=\"block\";sz=\"" TO_STRING(MAX_PLUGFEST_BODY) "\"", |
| res_get_handler, |
| NULL, |
| res_put_handler, |
| NULL); |
| |
| static int32_t large_update_size = 0; |
| static uint8_t large_update_store[MAX_PLUGFEST_BODY] = { 0 }; |
| static unsigned int large_update_ct = APPLICATION_OCTET_STREAM; |
| |
| static void |
| res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset) |
| { |
| /* Check the offset for boundaries of the resource data. */ |
| if(*offset >= large_update_size) { |
| REST.set_response_status(response, REST.status.BAD_OPTION); |
| /* A block error message should not exceed the minimum block size (16). */ |
| |
| const char *error_msg = "BlockOutOfScope"; |
| REST.set_response_payload(response, error_msg, strlen(error_msg)); |
| return; |
| } |
| |
| REST.set_response_payload(response, large_update_store + *offset, |
| MIN(large_update_size - *offset, preferred_size)); |
| REST.set_header_content_type(response, large_update_ct); |
| |
| /* IMPORTANT for chunk-wise resources: Signal chunk awareness to REST engine. */ |
| *offset += preferred_size; |
| |
| /* Signal end of resource representation. */ |
| if(*offset >= large_update_size) { |
| *offset = -1; |
| } |
| } |
| static void |
| res_put_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset) |
| { |
| coap_packet_t *const coap_req = (coap_packet_t *)request; |
| uint8_t *incoming = NULL; |
| size_t len = 0; |
| |
| unsigned int ct = -1; |
| |
| if(!REST.get_header_content_type(request, &ct)) { |
| REST.set_response_status(response, REST.status.BAD_REQUEST); |
| const char *error_msg = "NoContentType"; |
| REST.set_response_payload(response, error_msg, strlen(error_msg)); |
| return; |
| } |
| |
| if((len = REST.get_request_payload(request, (const uint8_t **)&incoming))) { |
| if(coap_req->block1_num * coap_req->block1_size + len <= sizeof(large_update_store)) { |
| memcpy( |
| large_update_store + coap_req->block1_num * coap_req->block1_size, |
| incoming, len); |
| large_update_size = coap_req->block1_num * coap_req->block1_size + len; |
| large_update_ct = ct; |
| |
| REST.set_response_status(response, REST.status.CHANGED); |
| coap_set_header_block1(response, coap_req->block1_num, 0, |
| coap_req->block1_size); |
| } else { |
| REST.set_response_status(response, |
| REST.status.REQUEST_ENTITY_TOO_LARGE); |
| REST.set_response_payload( |
| response, |
| buffer, |
| snprintf((char *)buffer, MAX_PLUGFEST_PAYLOAD, "%uB max.", |
| sizeof(large_update_store))); |
| return; |
| } |
| } else { |
| REST.set_response_status(response, REST.status.BAD_REQUEST); |
| const char *error_msg = "NoPayload"; |
| REST.set_response_payload(response, error_msg, strlen(error_msg)); |
| return; |
| } |
| } |