void
hnd_put_test(coap_context_t *ctx, struct coap_resource_t *resource,
coap_address_t *peer, coap_pdu_t *request, str *token,
coap_pdu_t *response) {
coap_opt_iterator_t opt_iter;
coap_opt_t *option;
coap_payload_t *payload;
size_t len;
unsigned char *data;
(void)ctx;
(void)peer;
(void)token;
response->hdr->code = COAP_RESPONSE_CODE(204);
coap_get_data(request, &len, &data);
payload = coap_find_payload(resource->key);
if (payload && payload->max_data < len) { /* need more storage */
coap_delete_payload(payload);
payload = NULL;
/* bug: when subsequent coap_new_payload() fails, our old contents
is gone */
}
if (!payload) { /* create new payload */
payload = coap_new_payload(len);
if (!payload)
goto error;
coap_add_payload(resource->key, payload, NULL);
}
payload->length = len;
memcpy(payload->data, data, len);
option = coap_check_option(request, COAP_OPTION_CONTENT_TYPE, &opt_iter);
if (option) {
/* set media type given in request */
payload->media_type =
coap_decode_var_bytes(COAP_OPT_VALUE(option), COAP_OPT_LENGTH(option));
} else {
/* set default value */
payload->media_type = COAP_MEDIATYPE_TEXT_PLAIN;
}
/* FIXME: need to change attribute ct of resource.
To do so, we need dynamic management of the attribute value
*/
return;
error:
warn("cannot modify resource\n");
response->hdr->code = COAP_RESPONSE_CODE(500);
}
void
hnd_delete_test(coap_context_t *ctx, struct coap_resource_t *resource,
coap_address_t *peer, coap_pdu_t *request, str *token,
coap_pdu_t *response) {
/* the ETSI validation tool does not like empty resources... */
#if 0
coap_payload_t *payload;
payload = coap_find_payload(resource->key);
if (payload)
payload->length = 0;
#endif
response->hdr->code = COAP_RESPONSE_CODE(202);
}
/* DELETE handler for dynamic resources created by POST /test */
void
hnd_delete_resource(coap_context_t *ctx, struct coap_resource_t *resource,
coap_address_t *peer, coap_pdu_t *request, str *token,
coap_pdu_t *response) {
coap_payload_t *payload;
payload = coap_find_payload(resource->key);
if (payload)
coap_delete_payload(payload);
coap_delete_resource(ctx, resource->key);
response->hdr->code = COAP_RESPONSE_CODE(202);
}
void
hnd_get_resource(coap_context_t *ctx, struct coap_resource_t *resource,
coap_address_t *peer, coap_pdu_t *request, str *token,
coap_pdu_t *response) {
coap_key_t etag;
unsigned char buf[2];
coap_payload_t *test_payload;
coap_block_t block;
(void)ctx;
(void)peer;
(void)token;
test_payload = coap_find_payload(resource->key);
if (!test_payload) {
response->hdr->code = COAP_RESPONSE_CODE(500);
return;
}
response->hdr->code = COAP_RESPONSE_CODE(205);
coap_add_option(response, COAP_OPTION_CONTENT_TYPE,
coap_encode_var_bytes(buf, test_payload->media_type), buf);
/* add etag for the resource */
if (test_payload->flags & REQUIRE_ETAG) {
memset(etag, 0, sizeof(etag));
coap_hash(test_payload->data, test_payload->length, etag);
coap_add_option(response, COAP_OPTION_ETAG, sizeof(etag), etag);
}
if (request) {
int res;
if (coap_get_block(request, COAP_OPTION_BLOCK2, &block)) {
res = coap_write_block_opt(&block, COAP_OPTION_BLOCK2, response,
test_payload->length);
switch (res) {
case -2: /* illegal block */
response->hdr->code = COAP_RESPONSE_CODE(400);
goto error;
case -1: /* should really not happen */
assert(0);
/* fall through if assert is a no-op */
case -3: /* cannot handle request */
response->hdr->code = COAP_RESPONSE_CODE(500);
goto error;
default: /* everything is good */
;
}
coap_add_block(response, test_payload->length, test_payload->data,
block.num, block.szx);
} else {
if (!coap_add_data(response, test_payload->length, test_payload->data)) {
/* set initial block size, will be lowered by
* coap_write_block_opt) automatically */
block.szx = 6;
coap_write_block_opt(&block, COAP_OPTION_BLOCK2, response,
test_payload->length);
coap_add_block(response, test_payload->length, test_payload->data,
block.num, block.szx);
}
}
} else { /* this is a notification, block is 0 */
/* FIXME: need to store block size with subscription */
}
return;
error:
coap_add_data(response,
strlen(coap_response_phrase(response->hdr->code)),
(unsigned char *)coap_response_phrase(response->hdr->code));
}
