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nes-proj/examples/er-rest-example/er-plugtest-server.c

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/*
* Copyright (c) 2013, Matthias Kovatsch
* 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
* Server for the ETSI IoT CoAP Plugtests, Paris, France, 24 - 25 March 2012
* \author
* Matthias Kovatsch <kovatsch@inf.ethz.ch>
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "contiki.h"
#include "contiki-net.h"
#define MAX_PLUGFEST_PAYLOAD 64+1 /* +1 for the terminating zero, which is not transmitted */
#define MAX_PLUGFEST_BODY 2048
#define CHUNKS_TOTAL 2012
/* Define which resources to include to meet memory constraints. */
#define REST_RES_TEST 1
#define REST_RES_LONG 1
#define REST_RES_QUERY 1
#define REST_RES_LOC_QUERY 1
#define REST_RES_MULTI 1
#define REST_RES_LINKS 1
#define REST_RES_PATH 1
#define REST_RES_SEPARATE 1
#define REST_RES_LARGE 1
#define REST_RES_LARGE_UPDATE 1
#define REST_RES_LARGE_CREATE 1
#define REST_RES_OBS 1
#define REST_RES_MIRROR 1
#if !defined (CONTIKI_TARGET_MINIMAL_NET)
#warning "Should only be compiled for minimal-net!"
#endif
#include "erbium.h"
/* For CoAP-specific example: not required for normal RESTful Web service. */
#if WITH_COAP==7
#include "er-coap-07.h"
#elif WITH_COAP == 12
#include "er-coap-12.h"
#elif WITH_COAP == 13
#include "er-coap-13.h"
#else
#error "Plugtests server without CoAP"
#endif /* CoAP-specific example */
#define DEBUG 1
#if DEBUG
#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
#if REST_RES_TEST
/*
* Default test resource
*/
RESOURCE(test, METHOD_GET|METHOD_POST|METHOD_PUT|METHOD_DELETE, "test", "title=\"Default test resource\"");
static uint8_t test_etag[8] = {0};
static uint8_t test_etag_len = 1;
static uint8_t test_change = 1;
static uint8_t test_none_match_okay = 1;
static
void
test_update_etag()
{
int i;
test_etag_len = (random_rand() % 8) + 1;
for (i=0; i<test_etag_len; ++i)
{
test_etag[i] = random_rand();
}
test_change = 0;
PRINTF("### SERVER ACTION ### Changed ETag %u [0x%02X%02X%02X%02X%02X%02X%02X%02X]\n", test_etag_len,
test_etag[0],
test_etag[1],
test_etag[2],
test_etag[3],
test_etag[4],
test_etag[5],
test_etag[6],
test_etag[7]
);
}
void
test_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 method = REST.get_method_type(request);
const uint8_t *bytes = NULL;
size_t len = 0;
if (test_change)
{
test_update_etag();
}
PRINTF("/test ");
if (method & METHOD_GET)
{
PRINTF("GET ");
if ((len = coap_get_header_etag(request, &bytes))>0 && len==test_etag_len && memcmp(test_etag, bytes, len)==0)
{
PRINTF("validate ");
REST.set_response_status(response, REST.status.NOT_MODIFIED);
REST.set_header_etag(response, test_etag, test_etag_len);
test_change = 1;
PRINTF("### SERVER ACTION ### Resouce will change\n");
}
else
{
/* Code 2.05 CONTENT is default. */
REST.set_header_content_type(response, REST.type.TEXT_PLAIN);
REST.set_header_etag(response, test_etag, test_etag_len);
REST.set_header_max_age(response, 30);
REST.set_response_payload(response, buffer, snprintf((char *)buffer, MAX_PLUGFEST_PAYLOAD, "Type: %u\nCode: %u\nMID: %u", coap_req->type, coap_req->code, coap_req->mid));
}
}
else if (method & METHOD_POST)
{
PRINTF("POST ");
REST.set_response_status(response, REST.status.CREATED);
REST.set_header_location(response, "/location1/location2/location3");
}
else if (method & METHOD_PUT)
{
PRINTF("PUT ");
if (coap_get_header_if_none_match(request))
{
if (test_none_match_okay)
{
REST.set_response_status(response, REST.status.CREATED);
test_none_match_okay = 0;
PRINTF("### SERVER ACTION ### If-None-Match will FAIL\n");
}
else
{
REST.set_response_status(response, PRECONDITION_FAILED_4_12);
test_none_match_okay = 1;
PRINTF("### SERVER ACTION ### If-None-Match will SUCCEED\n");
}
}
else if (((len = coap_get_header_if_match(request, &bytes))>0 && (len==test_etag_len && memcmp(test_etag, bytes, len)==0)) || len==0)
{
test_update_etag();
REST.set_header_etag(response, test_etag, test_etag_len);
REST.set_response_status(response, REST.status.CHANGED);
if (len>0)
{
test_change = 1;
PRINTF("### SERVER ACTION ### Resouce will change\n");
}
}
else
{
PRINTF("Check %u/%u\n [0x%02X%02X%02X%02X%02X%02X%02X%02X]\n [0x%02X%02X%02X%02X%02X%02X%02X%02X] ", len, test_etag_len,
bytes[0],
bytes[1],
bytes[2],
bytes[3],
bytes[4],
bytes[5],
bytes[6],
bytes[7],
test_etag[0],
test_etag[1],
test_etag[2],
test_etag[3],
test_etag[4],
test_etag[5],
test_etag[6],
test_etag[7] );
REST.set_response_status(response, PRECONDITION_FAILED_4_12);
}
}
else if (method & METHOD_DELETE)
{
PRINTF("DELETE ");
REST.set_response_status(response, REST.status.DELETED);
}
PRINTF("(%s %u)\n", coap_req->type==COAP_TYPE_CON?"CON":"NON", coap_req->mid);
}
RESOURCE(create1, METHOD_PUT|METHOD_DELETE, "create1", "title=\"Default test resource\"");
static uint8_t create1_exists = 0;
void
create1_handler(void* request, void* response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
uint8_t method = REST.get_method_type(request);
if (test_change)
{
test_update_etag();
}
PRINTF("/create1 ");
if (method & METHOD_PUT)
{
PRINTF("PUT ");
if (coap_get_header_if_none_match(request))
{
if (!create1_exists)
{
REST.set_response_status(response, REST.status.CREATED);
create1_exists = 1;
}
else
{
REST.set_response_status(response, PRECONDITION_FAILED_4_12);
}
}
else
{
REST.set_response_status(response, REST.status.CHANGED);
}
}
else if (method & METHOD_DELETE)
{
PRINTF("DELETE ");
REST.set_response_status(response, REST.status.DELETED);
create1_exists = 0;
}
}
RESOURCE(create2, METHOD_POST, "create2", "title=\"Creates on POST\"");
void
create2_handler(void* request, void* response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
if (test_change)
{
test_update_etag();
}
PRINTF("/create2 ");
REST.set_response_status(response, REST.status.CREATED);
REST.set_header_location(response, "/location1/location2/location3");
}
RESOURCE(create3, METHOD_PUT|METHOD_DELETE, "create3", "title=\"Default test resource\"");
static uint8_t create3_exists = 0;
void
create3_handler(void* request, void* response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
uint8_t method = REST.get_method_type(request);
if (test_change)
{
test_update_etag();
}
PRINTF("/create3 ");
if (method & METHOD_PUT)
{
PRINTF("PUT ");
if (coap_get_header_if_none_match(request))
{
if (!create3_exists)
{
REST.set_response_status(response, REST.status.CREATED);
create3_exists = 1;
}
else
{
REST.set_response_status(response, PRECONDITION_FAILED_4_12);
}
}
else
{
REST.set_response_status(response, REST.status.CHANGED);
}
}
else if (method & METHOD_DELETE)
{
PRINTF("DELETE ");
REST.set_response_status(response, REST.status.DELETED);
create3_exists = 0;
}
}
RESOURCE(validate, METHOD_GET|METHOD_PUT, "validate", "title=\"Default test resource\"");
static uint8_t validate_etag[8] = {0};
static uint8_t validate_etag_len = 1;
static uint8_t validate_change = 1;
static
void
validate_update_etag()
{
int i;
validate_etag_len = (random_rand() % 8) + 1;
for (i=0; i<validate_etag_len; ++i)
{
validate_etag[i] = random_rand();
}
validate_change = 0;
PRINTF("### SERVER ACTION ### Changed ETag %u [0x%02X%02X%02X%02X%02X%02X%02X%02X]\n", validate_etag_len,
validate_etag[0],
validate_etag[1],
validate_etag[2],
validate_etag[3],
validate_etag[4],
validate_etag[5],
validate_etag[6],
validate_etag[7]
);
}
void
validate_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 method = REST.get_method_type(request);
const uint8_t *bytes = NULL;
size_t len = 0;
if (validate_change)
{
validate_update_etag();
}
PRINTF("/validate ");
if (method & METHOD_GET)
{
PRINTF("GET ");
if ((len = coap_get_header_etag(request, &bytes))>0 && len==validate_etag_len && memcmp(validate_etag, bytes, len)==0)
{
PRINTF("validate ");
REST.set_response_status(response, REST.status.NOT_MODIFIED);
REST.set_header_etag(response, validate_etag, validate_etag_len);
validate_change = 1;
PRINTF("### SERVER ACTION ### Resouce will change\n");
}
else
{
/* Code 2.05 CONTENT is default. */
REST.set_header_content_type(response, REST.type.TEXT_PLAIN);
REST.set_header_etag(response, validate_etag, validate_etag_len);
REST.set_header_max_age(response, 30);
REST.set_response_payload(response, buffer, snprintf((char *)buffer, MAX_PLUGFEST_PAYLOAD, "Type: %u\nCode: %u\nMID: %u", coap_req->type, coap_req->code, coap_req->mid));
}
}
else if (method & METHOD_PUT)
{
PRINTF("PUT ");
if (((len = coap_get_header_if_match(request, &bytes))>0 && (len==validate_etag_len && memcmp(validate_etag, bytes, len)==0)) || len==0)
{
validate_update_etag();
REST.set_header_etag(response, validate_etag, validate_etag_len);
REST.set_response_status(response, REST.status.CHANGED);
if (len>0)
{
validate_change = 1;
PRINTF("### SERVER ACTION ### Resouce will change\n");
}
}
else
{
PRINTF("Check %u/%u\n [0x%02X%02X%02X%02X%02X%02X%02X%02X]\n [0x%02X%02X%02X%02X%02X%02X%02X%02X] ", len, validate_etag_len,
bytes[0],
bytes[1],
bytes[2],
bytes[3],
bytes[4],
bytes[5],
bytes[6],
bytes[7],
validate_etag[0],
validate_etag[1],
validate_etag[2],
validate_etag[3],
validate_etag[4],
validate_etag[5],
validate_etag[6],
validate_etag[7] );
REST.set_response_status(response, PRECONDITION_FAILED_4_12);
}
}
PRINTF("(%s %u)\n", coap_req->type==COAP_TYPE_CON?"CON":"NON", coap_req->mid);
}
#endif
#if REST_RES_LONG
/*
* Long path resource
*/
RESOURCE(longpath, METHOD_GET, "seg1/seg2/seg3", "title=\"Long path resource\"");
void
longpath_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 method = REST.get_method_type(request);
PRINTF("/seg1/seg2/seg3 ");
if (method & METHOD_GET)
{
PRINTF("GET ");
/* Code 2.05 CONTENT is default. */
REST.set_header_content_type(response, REST.type.TEXT_PLAIN);
REST.set_response_payload(response, buffer, snprintf((char *)buffer, MAX_PLUGFEST_PAYLOAD, "Type: %u\nCode: %u\nMID: %u", coap_req->type, coap_req->code, coap_req->mid));
}
PRINTF("(%s %u)\n", coap_req->type==COAP_TYPE_CON?"CON":"NON", coap_req->mid);
}
#endif
#if REST_RES_QUERY
/*
* Resource accepting query parameters
*/
RESOURCE(query, METHOD_GET, "query", "title=\"Resource accepting query parameters\"");
void
query_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;
int len = 0;
const char *query = NULL;
PRINTF("/query GET (%s %u)\n", coap_req->type==COAP_TYPE_CON?"CON":"NON", coap_req->mid);
if ((len = REST.get_query(request, &query)))
{
PRINTF("Query: %.*s\n", len, query);
}
/* Code 2.05 CONTENT is default. */
REST.set_header_content_type(response, REST.type.TEXT_PLAIN);
REST.set_response_payload(response, buffer, snprintf((char *)buffer, MAX_PLUGFEST_PAYLOAD, "Type: %u\nCode: %u\nMID: %u\nQuery: %.*s", coap_req->type, coap_req->code, coap_req->mid, len, query));
}
#endif
#if REST_RES_LOC_QUERY
/*
* Resource accepting query parameters
*/
RESOURCE(locquery, METHOD_POST, "location-query", "title=\"Resource accepting query parameters\"");
void
locquery_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;
PRINTF("/location-query POST (%s %u)\n", coap_req->type==COAP_TYPE_CON?"CON":"NON", coap_req->mid);
REST.set_response_status(response, REST.status.CREATED);
REST.set_header_location(response, "?first=1&second=2");
}
#endif
#if REST_RES_MULTI
/*
* Resource providing text/plain and application/xml
*/
RESOURCE(multi, METHOD_GET, "multi-format", "title=\"Resource providing text/plain and application/xml\";ct=\"0 41\"");
void
multi_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;
const uint16_t *accept = NULL;
int num = REST.get_header_accept(request, &accept);
PRINTF("/multi-format GET (%s %u) %d\n", coap_req->type==COAP_TYPE_CON?"CON":"NON", coap_req->mid, num);
if (num==0 || (num && accept[0]==REST.type.TEXT_PLAIN))
{
REST.set_header_content_type(response, REST.type.TEXT_PLAIN);
REST.set_response_payload(response, buffer, snprintf((char *)buffer, MAX_PLUGFEST_PAYLOAD, "Type: %u\nCode: %u\nMID: %u%s", coap_req->type, coap_req->code, coap_req->mid, num ? "\nAccept: 0" : ""));
PRINTF("PLAIN\n");
}
else if (num && (accept[0]==REST.type.APPLICATION_XML))
{
REST.set_header_content_type(response, REST.type.APPLICATION_XML);
REST.set_response_payload(response, buffer, snprintf((char *)buffer, MAX_PLUGFEST_PAYLOAD, "<status type=\"%u\" code=\"%u\" mid=\"%u\" accept=\"%u\"/>", coap_req->type, coap_req->code, coap_req->mid, accept[0]));
PRINTF("XML\n");
}
else
{
REST.set_response_status(response, REST.status.NOT_ACCEPTABLE);
const char *msg = "Supporting content-types text/plain and application/xml";
REST.set_response_payload(response, msg, strlen(msg));
PRINTF("ERROR\n");
}
}
#endif
#if REST_RES_LINKS
/*
* Resources providing text/plain and application/xml
*/
RESOURCE(link1, METHOD_GET, "link1", "rt=\"Type1 Type2\";if=\"If1\"");
SUB_RESOURCE(link2, METHOD_GET, "link2", "rt=\"Type2 Type3\";if=\"If2\"", link1);
SUB_RESOURCE(link3, METHOD_GET, "link3", "rt=\"Type1 Type3\";if=\"foo\"", link1);
void
link1_handler(void* request, void* response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
const char *msg = "Dummy link";
REST.set_header_content_type(response, REST.type.TEXT_PLAIN);
REST.set_response_payload(response, msg, strlen(msg));
}
#endif
#if REST_RES_PATH
/*
* Resources providing text/plain and application/xml
*/
RESOURCE(path, METHOD_GET | HAS_SUB_RESOURCES, "path", "ct=\"40\"");
void
path_handler(void* request, void* response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
const char *uri_path = NULL;
int len = REST.get_url(request, &uri_path);
int base_len = strlen(resource_path.url);
if (len==base_len)
{
REST.set_header_content_type(response, REST.type.APPLICATION_LINK_FORMAT);
snprintf((char *)buffer, MAX_PLUGFEST_PAYLOAD, "</path/sub1>,</path/sub2>,</path/sub3>");
}
else
{
REST.set_header_content_type(response, REST.type.TEXT_PLAIN);
snprintf((char *)buffer, MAX_PLUGFEST_PAYLOAD, "/%.*s", len, uri_path);
}
REST.set_response_payload(response, buffer, strlen((char *)buffer));
}
#endif
#if REST_RES_SEPARATE
/* Required to manually (=not by the engine) handle the response transaction. */
#if WITH_COAP == 7
#include "er-coap-07-separate.h"
#include "er-coap-07-transactions.h"
#elif WITH_COAP == 12
#include "er-coap-12-separate.h"
#include "er-coap-12-transactions.h"
#elif WITH_COAP == 13
#include "er-coap-13-separate.h"
#include "er-coap-13-transactions.h"
#endif
/*
* Resource which cannot be served immediately and which cannot be acknowledged in a piggy-backed way
*/
PERIODIC_RESOURCE(separate, METHOD_GET, "separate", "title=\"Resource which cannot be served immediately and which cannot be acknowledged in a piggy-backed way\"", 3*CLOCK_SECOND);
/* A structure to store the required information */
typedef struct application_separate_store {
/* Provided by Erbium to store generic request information such as remote address and token. */
coap_separate_t request_metadata;
/* Add fields for addition information to be stored for finalizing, e.g.: */
char buffer[MAX_PLUGFEST_PAYLOAD];
} application_separate_store_t;
static uint8_t separate_active = 0;
static application_separate_store_t separate_store[1];
void
separate_handler(void* request, void* response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
coap_packet_t *const coap_req = (coap_packet_t *) request;
PRINTF("/separate ");
if (separate_active)
{
PRINTF("REJECTED ");
coap_separate_reject();
}
else
{
PRINTF("STORED ");
separate_active = 1;
/* Take over and skip response by engine. */
coap_separate_accept(request, &separate_store->request_metadata);
/* Be aware to respect the Block2 option, which is also stored in the coap_separate_t. */
snprintf(separate_store->buffer, MAX_PLUGFEST_PAYLOAD, "Type: %u\nCode: %u\nMID: %u", coap_req->type, coap_req->code, coap_req->mid);
}
PRINTF("(%s %u)\n", coap_req->type==COAP_TYPE_CON?"CON":"NON", coap_req->mid);
}
void
separate_periodic_handler(resource_t *resource)
{
if (separate_active)
{
PRINTF("/separate ");
coap_transaction_t *transaction = NULL;
if ( (transaction = coap_new_transaction(separate_store->request_metadata.mid, &separate_store->request_metadata.addr, separate_store->request_metadata.port)) )
{
PRINTF("RESPONSE (%s %u)\n", separate_store->request_metadata.type==COAP_TYPE_CON?"CON":"NON", separate_store->request_metadata.mid);
coap_packet_t response[1]; /* This way the packet can be treated as pointer as usual. */
/* Restore the request information for the response. */
coap_separate_resume(response, &separate_store->request_metadata, CONTENT_2_05);
REST.set_header_content_type(response, REST.type.TEXT_PLAIN);
coap_set_payload(response, separate_store->buffer, strlen(separate_store->buffer));
/*
* Be aware to respect the Block2 option, which is also stored in the coap_separate_t.
* As it is a critical option, this example resource pretends to handle it for compliance.
*/
coap_set_header_block2(response, separate_store->request_metadata.block2_num, 0, separate_store->request_metadata.block2_size);
/* Warning: No check for serialization error. */
transaction->packet_len = coap_serialize_message(response, transaction->packet);
coap_send_transaction(transaction);
/* The engine will clear the transaction (right after send for NON, after acked for CON). */
separate_active = 0;
} else {
PRINTF("ERROR (transaction)\n");
}
} /* if (separate_active) */
}
#endif
#if REST_RES_LARGE
/* double expansion */
#define TO_STRING2(x) #x
#define TO_STRING(x) TO_STRING2(x)
/*
* Large resource
*/
RESOURCE(large, METHOD_GET, "large", "title=\"Large resource\";rt=\"block\";sz=\"" TO_STRING(CHUNKS_TOTAL) "\"");
void
large_handler(void* request, void* response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
int32_t strpos = 0;
/* Check the offset for boundaries of the resource data. */
if (*offset>=CHUNKS_TOTAL)
{
REST.set_response_status(response, REST.status.BAD_OPTION);
/* A block error message should not exceed the minimum block size (16). */
const char *error_msg = "BlockOutOfScope";
REST.set_response_payload(response, error_msg, strlen(error_msg));
return;
}
/* Generate data until reaching CHUNKS_TOTAL. */
while (strpos<preferred_size)
{
strpos += snprintf((char *)buffer+strpos, preferred_size-strpos+1, "|%ld|", *offset);
}
/* snprintf() does not adjust return value if truncated by size. */
if (strpos > preferred_size)
{
strpos = preferred_size;
}
/* Truncate if above CHUNKS_TOTAL bytes. */
if (*offset+(int32_t)strpos > CHUNKS_TOTAL)
{
strpos = CHUNKS_TOTAL - *offset;
}
REST.set_response_payload(response, buffer, strpos);
REST.set_header_content_type(response, REST.type.TEXT_PLAIN);
/* IMPORTANT for chunk-wise resources: Signal chunk awareness to REST engine. */
*offset += strpos;
/* Signal end of resource representation. */
if (*offset>=CHUNKS_TOTAL)
{
*offset = -1;
}
}
#endif
#if REST_RES_LARGE_UPDATE
/*
* Large resource that can be updated using PUT method
*/
RESOURCE(large_update, METHOD_GET|METHOD_PUT, "large-update", "title=\"Large resource that can be updated using PUT method\";rt=\"block\";sz=\"" TO_STRING(MAX_PLUGFEST_BODY) "\"");
static int32_t large_update_size = 0;
static uint8_t large_update_store[MAX_PLUGFEST_BODY] = {0};
static unsigned int large_update_ct = -1;
void
large_update_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 method = REST.get_method_type(request);
if (method & METHOD_GET)
{
/* 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;
}
} else {
uint8_t *incoming = NULL;
size_t len = 0;
unsigned int ct = REST.get_header_content_type(request);
if (ct==-1)
{
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 = REST.get_header_content_type(request);
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;
}
}
}
#endif
#if REST_RES_LARGE_CREATE
/*
* Large resource that can be created using POST method
*/
RESOURCE(large_create, METHOD_POST, "large-create", "title=\"Large resource that can be created using POST method\";rt=\"block\"");
void
large_create_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 = REST.get_header_content_type(request);
if (ct==-1)
{
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 <= 2048)
{
REST.set_response_status(response, REST.status.CREATED);
REST.set_header_location(response, "/nirvana");
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);
const char *error_msg = "2048B max.";
REST.set_response_payload(response, error_msg, strlen(error_msg));
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;
}
}
#endif
#if REST_RES_OBS
#if WITH_COAP == 12
#include "er-coap-12-observing.h"
#elif WITH_COAP == 13
#include "er-coap-13-observing.h"
#endif
/*
* Observable resource which changes every 5 seconds
*/
PERIODIC_RESOURCE(obs, METHOD_GET|METHOD_PUT|METHOD_DELETE, "obs", "title=\"Observable resource which changes every 5 seconds\";obs", 5*CLOCK_SECOND);
static uint16_t obs_counter = 0;
static char obs_content[MAX_PLUGFEST_BODY];
static size_t obs_content_len = 0;
static unsigned int obs_format = 0;
static char obs_status = 0;
static
void
obs_purge_list()
{
PRINTF("### SERVER ACTION ### Purging obs list");
coap_remove_observer_by_url(NULL, 0, resource_obs.url);
}
void
obs_handler(void* request, void* response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
uint8_t method = request==NULL ? METHOD_GET : REST.get_method_type(request);
/* Keep server log clean from ticking events */
if (request!=NULL)
{
PRINTF("/obs ");
}
if (method & METHOD_GET)
{
/* Keep server log clean from ticking events */
if (request!=NULL)
{
PRINTF("GET ");
}
REST.set_header_content_type(response, obs_format);
REST.set_header_max_age(response, 5);
if (obs_content_len)
{
REST.set_header_content_type(response, obs_format);
REST.set_response_payload(response, obs_content, obs_content_len);
}
else
{
REST.set_header_content_type(response, REST.type.TEXT_PLAIN);
REST.set_response_payload(response, obs_content, snprintf(obs_content, MAX_PLUGFEST_PAYLOAD, "TICK %lu", obs_counter));
}
/* A post_handler that handles subscriptions will be called for periodic resources by the REST framework. */
}
else if (method & METHOD_PUT)
{
uint8_t *incoming = NULL;
unsigned int ct = REST.get_header_content_type(request);
PRINTF("PUT ");
if (ct!=obs_format)
{
obs_status = 1;
obs_format = ct;
} else {
obs_format = ct;
obs_content_len = REST.get_request_payload(request, (const uint8_t **) &incoming);
memcpy(obs_content, incoming, obs_content_len);
obs_periodic_handler(&resource_obs);
}
REST.set_response_status(response, REST.status.CHANGED);
}
else if (method & METHOD_DELETE)
{
PRINTF("DELETE ");
obs_status = 2;
REST.set_response_status(response, REST.status.DELETED);
}
/* Keep server log clean from ticking events */
if (request!=NULL)
{
PRINTF("\n");
}
}
/*
* Additionally, a handler function named [resource name]_handler must be implemented for each PERIODIC_RESOURCE.
* It will be called by the REST manager process with the defined period.
*/
void
obs_periodic_handler(resource_t *r)
{
++obs_counter;
//PRINTF("TICK %u for /%s\n", obs_counter, r->url);
if (obs_status==1)
{
coap_packet_t notification[1]; /* This way the packet can be treated as pointer as usual. */
coap_init_message(notification, COAP_TYPE_NON, INTERNAL_SERVER_ERROR_5_00, 0 );
/* Notify the registered observers with the given message type, observe option, and payload. */
REST.notify_subscribers(&resource_obs, -1, notification);
PRINTF("######### sending 5.00\n");
obs_purge_list();
}
else if (obs_status==2)
{
coap_packet_t notification[1]; /* This way the packet can be treated as pointer as usual. */
coap_init_message(notification, COAP_TYPE_NON, NOT_FOUND_4_04, 0 );
/* Notify the registered observers with the given message type, observe option, and payload. */
REST.notify_subscribers(&resource_obs, -1, notification);
obs_purge_list();
obs_counter = 0;
obs_content_len = 0;
}
else
{
/* Build notification. */
/*TODO: REST.new_response() */
coap_packet_t notification[1]; /* This way the packet can be treated as pointer as usual. */
coap_init_message(notification, COAP_TYPE_NON, CONTENT_2_05, 0 );
/* Better use a generator function for both handlers that only takes *resonse. */
obs_handler(NULL, notification, NULL, 0, NULL);
/* Notify the registered observers with the given message type, observe option, and payload. */
REST.notify_subscribers(r, obs_counter, notification);
}
obs_status = 0;
}
#endif
#if REST_RES_MIRROR
/* This resource mirrors the incoming request. It shows how to access the options and how to set them for the response. */
RESOURCE(mirror, METHOD_GET | METHOD_POST | METHOD_PUT | METHOD_DELETE, "debug/mirror", "title=\"Returns your decoded message\";rt=\"Debug\"");
void
mirror_handler(void* request, void* response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
{
/* The ETag and Token is copied to the header. */
uint8_t opaque[] = {0x0A, 0xBC, 0xDE};
/* Strings are not copied, so use static string buffers or strings in .text memory (char *str = "string in .text";). */
static char location[] = {'/','f','/','a','?','k','&','e', 0};
/* Getter for the header option Content-Type. If the option is not set, text/plain is returned by default. */
unsigned int content_type = REST.get_header_content_type(request);
/* The other getters copy the value (or string/array pointer) to the given pointers and return 1 for success or the length of strings/arrays. */
uint32_t max_age_and_size = 0;
const char *str = NULL;
uint32_t observe = 0;
const uint8_t *bytes = NULL;
const uint16_t *words = NULL;
uint32_t block_num = 0;
uint8_t block_more = 0;
uint16_t block_size = 0;
const char *query = "";
int len = 0;
/* Mirror the received header options in the response payload. Unsupported getters (e.g., rest_get_header_observe() with HTTP) will return 0. */
int strpos = 0;
/* snprintf() counts the terminating '\0' to the size parameter.
* The additional byte is taken care of by allocating REST_MAX_CHUNK_SIZE+1 bytes in the REST framework.
* Add +1 to fill the complete buffer, as the payload does not need a terminating '\0'. */
if (strpos<=REST_MAX_CHUNK_SIZE && (len = REST.get_header_if_match(request, &bytes)))
{
strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "If-Match 0x");
int index = 0;
for (index = 0; index<len; ++index) {
strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "%02X", bytes[index]);
}
strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "\n");
}
if (strpos<=REST_MAX_CHUNK_SIZE && (len = REST.get_header_host(request, &str)))
{
strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "Uri-Host %.*s\n", len, str);
}
if (strpos<=REST_MAX_CHUNK_SIZE && (len = coap_get_header_etag(request, &bytes)))
{
strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "ETag 0x");
int index = 0;
for (index = 0; index<len; ++index) {
strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "%02X", bytes[index]);
}
strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "\n");
}
if (strpos<=REST_MAX_CHUNK_SIZE && REST.get_header_if_none_match(request))
{
strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "If-None-Match\n");
}
if (strpos<=REST_MAX_CHUNK_SIZE && coap_get_header_observe(request, &observe))
{
strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "Observe %lu\n", observe);
}
if (strpos<=REST_MAX_CHUNK_SIZE && (len = coap_get_header_location_path(request, &str)))
{
strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "Location-Path %.*s\n", len, str);
}
if (strpos<=REST_MAX_CHUNK_SIZE && (len = coap_get_header_uri_path(request, &str)))
{
strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "Uri-Path %.*s\n", len, str);
}
if (strpos<=REST_MAX_CHUNK_SIZE && content_type!=-1)
{
strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "Content-Format %u\n", content_type);
}
if (strpos<=REST_MAX_CHUNK_SIZE && REST.get_header_max_age(request, &max_age_and_size))
{
strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "Max-Age %lu\n", max_age_and_size);
}
if (strpos<=REST_MAX_CHUNK_SIZE && (len = REST.get_query(request, &query)))
{
strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "Uri-Query %.*s\n", len, query);
}
if (strpos<=REST_MAX_CHUNK_SIZE && (len = REST.get_header_accept(request, &words)))
{
strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "Accept ");
int index = 0;
for (index = 0; index<len; ++index) {
strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "%u", words[index]);
}
strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "\n");
}
if (strpos<=REST_MAX_CHUNK_SIZE && (len = coap_get_header_token(request, &bytes)))
{
strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "Token 0x");
int index = 0;
for (index = 0; index<len; ++index) {
strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "%02X", bytes[index]);
}
strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "\n");
}
if (strpos<=REST_MAX_CHUNK_SIZE && (len = coap_get_header_location_query(request, &str)))
{
strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "Location-Query %.*s\n", len, str);
}
if (strpos<=REST_MAX_CHUNK_SIZE && coap_get_header_block2(request, &block_num, &block_more, &block_size, NULL)) /* This getter allows NULL pointers to get only a subset of the block parameters. */
{
strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "Block2 %lu%s (%u)\n", block_num, block_more ? "+" : "", block_size);
}
if (strpos<=REST_MAX_CHUNK_SIZE && coap_get_header_block1(request, &block_num, &block_more, &block_size, NULL)) /* This getter allows NULL pointers to get only a subset of the block parameters. */
{
strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "Block1 %lu%s (%u)\n", block_num, block_more ? "+" : "", block_size);
}
if (strpos<=REST_MAX_CHUNK_SIZE && REST.get_header_length(request, &max_age_and_size))
{
strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "Size %lu\n", max_age_and_size);
}
if (strpos<=REST_MAX_CHUNK_SIZE && (len = REST.get_request_payload(request, &bytes)))
{
strpos += snprintf((char *)buffer+strpos, REST_MAX_CHUNK_SIZE-strpos+1, "\n%.*s", len, bytes);
}
if (strpos >= REST_MAX_CHUNK_SIZE)
{
buffer[REST_MAX_CHUNK_SIZE-1] = 0xBB; /* '»' to indicate truncation */
}
REST.set_response_payload(response, buffer, strpos);
PRINTF("/mirror options received: %s\n", buffer);
/* Set dummy header options for response. Like getters, some setters are not implemented for HTTP and have no effect. */
REST.set_header_content_type(response, REST.type.TEXT_PLAIN);
REST.set_header_max_age(response, 17); /* For HTTP, browsers will not re-request the page for 17 seconds. */
REST.set_header_etag(response, opaque, 2);
REST.set_header_location(response, location); /* Initial slash is omitted by framework */
REST.set_header_length(response, strpos); /* For HTTP, browsers will not re-request the page for 10 seconds. CoAP action depends on the client. */
/* CoAP-specific example: actions not required for normal RESTful Web service. */
coap_set_header_uri_host(response, "Contiki");
coap_set_header_observe(response, 10);
coap_set_header_proxy_uri(response, "ftp://x");
//coap_set_header_block2(response, 42, 0, 64);
//coap_set_header_block1(response, 23, 0, 16);
coap_set_header_accept(response, APPLICATION_XML);
coap_set_header_accept(response, APPLICATION_ATOM_XML);
coap_set_header_if_none_match(response);
}
#endif /* REST_RES_MIRROR */
PROCESS(plugtest_server, "PlugtestServer");
AUTOSTART_PROCESSES(&plugtest_server);
PROCESS_THREAD(plugtest_server, ev, data)
{
PROCESS_BEGIN();
PRINTF("ETSI IoT CoAP Plugtests Server\n");
#ifdef RF_CHANNEL
PRINTF("RF channel: %u\n", RF_CHANNEL);
#endif
#ifdef IEEE802154_PANID
PRINTF("PAN ID: 0x%04X\n", IEEE802154_PANID);
#endif
PRINTF("uIP buffer: %u\n", UIP_BUFSIZE);
PRINTF("LL header: %u\n", UIP_LLH_LEN);
PRINTF("IP+UDP header: %u\n", UIP_IPUDPH_LEN);
PRINTF("REST max chunk: %u\n", REST_MAX_CHUNK_SIZE);
/* Initialize the REST engine. */
rest_init_engine();
/* Activate the application-specific resources. */
#if REST_RES_TEST
rest_activate_resource(&resource_test);
rest_activate_resource(&resource_validate);
rest_activate_resource(&resource_create1);
rest_activate_resource(&resource_create2);
rest_activate_resource(&resource_create3);
#endif
#if REST_RES_LONG
rest_activate_resource(&resource_longpath);
#endif
#if REST_RES_QUERY
rest_activate_resource(&resource_query);
#endif
#if REST_RES_LOC_QUERY
rest_activate_resource(&resource_locquery);
#endif
#if REST_RES_MULTI
rest_activate_resource(&resource_multi);
#endif
#if REST_RES_LINKS
rest_activate_resource(&resource_link1);
rest_activate_resource(&resource_link2);
rest_activate_resource(&resource_link3);
#endif
#if REST_RES_PATH
rest_activate_resource(&resource_path);
#endif
#if REST_RES_SEPARATE
rest_activate_periodic_resource(&periodic_resource_separate);
#endif
#if REST_RES_LARGE
rest_activate_resource(&resource_large);
#endif
#if REST_RES_LARGE_UPDATE
large_update_ct = REST.type.APPLICATION_OCTET_STREAM;
rest_activate_resource(&resource_large_update);
#endif
#if REST_RES_LARGE_CREATE
rest_activate_resource(&resource_large_create);
#endif
#if REST_RES_OBS
rest_activate_periodic_resource(&periodic_resource_obs);
#endif
#if REST_RES_MIRROR
rest_activate_resource(&resource_mirror);
#endif
/* Define application-specific events here. */
while(1) {
PROCESS_WAIT_EVENT();
} /* while (1) */
PROCESS_END();
}
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