Patrick Barrett / libexositecoap

Important changes to repositories hosted on mbed.com

Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.

To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.

It is also possible to export all your personal repositories from the account settings page.

src/exosite.c@24:cfbd25fc62c4, 2015-01-06 (annotated)

Committer:
Patrick Barrett
Date:
Tue Jan 06 13:02:02 2015 -0600
Revision:
24:cfbd25fc62c4
Parent:
23:e94087cd483d
Child:
27:786cdb9c3605
use max-age for timeouts

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Patrick Barrett 0:c7393ae16c16 1 /*****************************************************************************
Patrick Barrett 0:c7393ae16c16 2 *
Patrick Barrett 0:c7393ae16c16 3 * exosite.c - Exosite Activator Library
Patrick Barrett 0:c7393ae16c16 4 * Copyright (C) 2015 Exosite LLC
Patrick Barrett 0:c7393ae16c16 5 *
Patrick Barrett 0:c7393ae16c16 6 * Redistribution and use in source and binary forms, with or without
Patrick Barrett 0:c7393ae16c16 7 * modification, are permitted provided that the following conditions
Patrick Barrett 0:c7393ae16c16 8 * are met:
Patrick Barrett 0:c7393ae16c16 9 *
Patrick Barrett 0:c7393ae16c16 10 * Redistributions of source code must retain the above copyright
Patrick Barrett 0:c7393ae16c16 11 * notice, this list of conditions and the following disclaimer.
Patrick Barrett 0:c7393ae16c16 12 *
Patrick Barrett 0:c7393ae16c16 13 * Redistributions in binary form must reproduce the above copyright
Patrick Barrett 0:c7393ae16c16 14 * notice, this list of conditions and the following disclaimer in the
Patrick Barrett 0:c7393ae16c16 15 * documentation and/or other materials provided with the
Patrick Barrett 0:c7393ae16c16 16 * distribution.
Patrick Barrett 0:c7393ae16c16 17 *
Patrick Barrett 0:c7393ae16c16 18 * Neither the name of Texas Instruments Incorporated nor the names of
Patrick Barrett 0:c7393ae16c16 19 * its contributors may be used to endorse or promote products derived
Patrick Barrett 0:c7393ae16c16 20 * from this software without specific prior written permission.
Patrick Barrett 0:c7393ae16c16 21 *
Patrick Barrett 0:c7393ae16c16 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
Patrick Barrett 0:c7393ae16c16 23 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
Patrick Barrett 0:c7393ae16c16 24 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
Patrick Barrett 0:c7393ae16c16 25 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
Patrick Barrett 0:c7393ae16c16 26 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
Patrick Barrett 0:c7393ae16c16 27 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
Patrick Barrett 0:c7393ae16c16 28 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
Patrick Barrett 0:c7393ae16c16 29 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
Patrick Barrett 0:c7393ae16c16 30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
Patrick Barrett 0:c7393ae16c16 31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
Patrick Barrett 0:c7393ae16c16 32 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Patrick Barrett 0:c7393ae16c16 33 *
Patrick Barrett 0:c7393ae16c16 34 *****************************************************************************/
Patrick Barrett 0:c7393ae16c16 35 #include "exosite_pal.h"
Patrick Barrett 0:c7393ae16c16 36 #include "exosite.h"
Patrick Barrett 0:c7393ae16c16 37 #include "coap.h"
Patrick Barrett 0:c7393ae16c16 38
Patrick Barrett 0:c7393ae16c16 39 #include <stdlib.h>
Patrick Barrett 0:c7393ae16c16 40 #include <stdbool.h>
Patrick Barrett 0:c7393ae16c16 41 #include <time.h>
Patrick Barrett 0:c7393ae16c16 42 #include <string.h>
Patrick Barrett 0:c7393ae16c16 43 #include <ctype.h>
Patrick Barrett 0:c7393ae16c16 44
Patrick Barrett 0:c7393ae16c16 45 // Internal Functions
Patrick Barrett 12:68513d2aa2df 46
Patrick Barrett 12:68513d2aa2df 47 static void exo_process_waiting_datagrams(exo_op *op, uint8_t count);
Patrick Barrett 12:68513d2aa2df 48 static void exo_process_active_ops(exo_op *op, uint8_t count);
Patrick Barrett 0:c7393ae16c16 49 exo_error exo_build_msg_activate(coap_pdu *pdu, const char *vendor, const char *model, const char *serial_number);
Patrick Barrett 0:c7393ae16c16 50 exo_error exo_build_msg_read(coap_pdu *pdu, const char *alias);
Patrick Barrett 0:c7393ae16c16 51 exo_error exo_build_msg_observe(coap_pdu *pdu, const char *alias);
Patrick Barrett 0:c7393ae16c16 52 exo_error exo_build_msg_write(coap_pdu *pdu, const char *alias, const char *value);
Patrick Barrett 0:c7393ae16c16 53 exo_error exo_build_msg_rst(coap_pdu *pdu, const uint16_t mid, const uint64_t token, const uint8_t tkl);
Patrick Barrett 0:c7393ae16c16 54 exo_error exo_build_msg_ack(coap_pdu *pdu, const uint16_t mid);
Patrick Barrett 0:c7393ae16c16 55 uint8_t exosite_validate_cik(char *cik);
Patrick Barrett 0:c7393ae16c16 56
Patrick Barrett 0:c7393ae16c16 57 // Local Variables
Patrick Barrett 0:c7393ae16c16 58 static char cik[CIK_LENGTH + 1];
Patrick Barrett 0:c7393ae16c16 59 static const char *vendor;
Patrick Barrett 0:c7393ae16c16 60 static const char *model;
Patrick Barrett 0:c7393ae16c16 61 static const char *serial;
Patrick Barrett 0:c7393ae16c16 62 static uint16_t message_id_counter;
Patrick Barrett 0:c7393ae16c16 63 static exo_device_state device_state = EXO_STATE_UNINITIALIZED;
Patrick Barrett 0:c7393ae16c16 64
Patrick Barrett 23:e94087cd483d 65 // Internal Constants
Patrick Barrett 23:e94087cd483d 66 static const int MINIMUM_DATAGRAM_SIZE = 576; // RFC791: all hosts must accept minimum of 576 octets
Patrick Barrett 23:e94087cd483d 67
Patrick Barrett 0:c7393ae16c16 68 /*!
Patrick Barrett 0:c7393ae16c16 69 * \brief Initializes the Exosite library
Patrick Barrett 0:c7393ae16c16 70 *
Patrick Barrett 0:c7393ae16c16 71 * This **MUST** be called before any other exosite library calls are called.
Patrick Barrett 0:c7393ae16c16 72 *
Patrick Barrett 0:c7393ae16c16 73 * \param[in] *vendor Pointer to string containing the vendor name
Patrick Barrett 0:c7393ae16c16 74 * \param[in] *model Pointer to string containing the model name
Patrick Barrett 0:c7393ae16c16 75 * \param[in] *serial Pointer to string containing the serial number
Patrick Barrett 0:c7393ae16c16 76 *
Patrick Barrett 0:c7393ae16c16 77 * \return EXO_ERROR, EXO_OK on success, else error code
Patrick Barrett 0:c7393ae16c16 78 */
Patrick Barrett 0:c7393ae16c16 79 exo_error exo_init(const char *vendor_in, const char *model_in, const char *serial_in)
Patrick Barrett 0:c7393ae16c16 80 {
Patrick Barrett 0:c7393ae16c16 81 device_state = EXO_STATE_UNINITIALIZED;
Patrick Barrett 0:c7393ae16c16 82
Patrick Barrett 0:c7393ae16c16 83 if (exopal_init() != 0) {
Patrick Barrett 0:c7393ae16c16 84 return EXO_FATAL_ERROR_PAL;
Patrick Barrett 0:c7393ae16c16 85 }
Patrick Barrett 0:c7393ae16c16 86
Patrick Barrett 0:c7393ae16c16 87 srand(time(NULL));
Patrick Barrett 0:c7393ae16c16 88 message_id_counter = rand();
Patrick Barrett 0:c7393ae16c16 89
Patrick Barrett 0:c7393ae16c16 90 serial = serial_in;
Patrick Barrett 0:c7393ae16c16 91 vendor = vendor_in;
Patrick Barrett 0:c7393ae16c16 92 model = model_in;
Patrick Barrett 0:c7393ae16c16 93
Patrick Barrett 0:c7393ae16c16 94 if (exopal_retrieve_cik(cik) > 1){
Patrick Barrett 0:c7393ae16c16 95 return EXO_FATAL_ERROR_PAL;
Patrick Barrett 0:c7393ae16c16 96 } else {
Patrick Barrett 0:c7393ae16c16 97 cik[40] = 0;
Patrick Barrett 0:c7393ae16c16 98 }
Patrick Barrett 0:c7393ae16c16 99
Patrick Barrett 0:c7393ae16c16 100 if (exopal_udp_sock() != 0) {
Patrick Barrett 0:c7393ae16c16 101 return EXO_FATAL_ERROR_PAL;
Patrick Barrett 0:c7393ae16c16 102 }
Patrick Barrett 0:c7393ae16c16 103
Patrick Barrett 0:c7393ae16c16 104 device_state = EXO_STATE_INITIALIZED;
Patrick Barrett 0:c7393ae16c16 105
Patrick Barrett 0:c7393ae16c16 106 return EXO_OK;
Patrick Barrett 0:c7393ae16c16 107 }
Patrick Barrett 0:c7393ae16c16 108
Patrick Barrett 0:c7393ae16c16 109 /*!
Patrick Barrett 0:c7393ae16c16 110 * \brief Queues a Write to the Exosite One Platform
Patrick Barrett 0:c7393ae16c16 111 *
Patrick Barrett 0:c7393ae16c16 112 * Queues a request to write to a dataport.
Patrick Barrett 0:c7393ae16c16 113 *
Patrick Barrett 0:c7393ae16c16 114 * \param[in] *alias Alias of dataport to write to, pointer must remain
Patrick Barrett 0:c7393ae16c16 115 * valid until the request has been sent.
Patrick Barrett 0:c7393ae16c16 116 * \param[in] callback Function pointer to call on success
Patrick Barrett 0:c7393ae16c16 117 *
Patrick Barrett 0:c7393ae16c16 118 * \return EXO_ERROR, EXO_OK on success or error code
Patrick Barrett 0:c7393ae16c16 119 *
Patrick Barrett 0:c7393ae16c16 120 */
Patrick Barrett 0:c7393ae16c16 121
Patrick Barrett 0:c7393ae16c16 122 void exo_write(exo_op *op, const char * alias, const char * value)
Patrick Barrett 0:c7393ae16c16 123 {
Patrick Barrett 0:c7393ae16c16 124 op->type = EXO_WRITE;
Patrick Barrett 0:c7393ae16c16 125 op->state = EXO_REQUEST_NEW;
Patrick Barrett 0:c7393ae16c16 126 op->alias = alias;
Patrick Barrett 0:c7393ae16c16 127 op->value = (char *)value; // this is kinda dirty, I know
Patrick Barrett 0:c7393ae16c16 128 op->value_max = 0;
Patrick Barrett 0:c7393ae16c16 129 op->mid = 0;
Patrick Barrett 0:c7393ae16c16 130 }
Patrick Barrett 0:c7393ae16c16 131
Patrick Barrett 0:c7393ae16c16 132 /*!
Patrick Barrett 0:c7393ae16c16 133 * \brief Queues a Read from the Exosite One Platform
Patrick Barrett 0:c7393ae16c16 134 *
Patrick Barrett 0:c7393ae16c16 135 * Queues a request to read a dataport. If the request is successful, the
Patrick Barrett 0:c7393ae16c16 136 * provided callback will be called with a single parameter, a pointer to the
Patrick Barrett 0:c7393ae16c16 137 * result as a C string.
Patrick Barrett 0:c7393ae16c16 138 *
Patrick Barrett 0:c7393ae16c16 139 * \param[in] *alias Alias of dataport to read from, pointer must remain
Patrick Barrett 0:c7393ae16c16 140 * valid until the request has been sent.
Patrick Barrett 0:c7393ae16c16 141 * \param[in] callback Function pointer to call on success
Patrick Barrett 0:c7393ae16c16 142 *
Patrick Barrett 0:c7393ae16c16 143 * \return EXO_ERROR, EXO_OK on success or error code
Patrick Barrett 0:c7393ae16c16 144 *
Patrick Barrett 0:c7393ae16c16 145 */
Patrick Barrett 0:c7393ae16c16 146 void exo_read(exo_op *op, const char * alias, char * value, const size_t value_max)
Patrick Barrett 0:c7393ae16c16 147 {
Patrick Barrett 0:c7393ae16c16 148 op->type = EXO_READ;
Patrick Barrett 0:c7393ae16c16 149 op->state = EXO_REQUEST_NEW;
Patrick Barrett 0:c7393ae16c16 150 op->alias = alias;
Patrick Barrett 0:c7393ae16c16 151 op->value = value;
Patrick Barrett 0:c7393ae16c16 152 op->value_max = value_max;
Patrick Barrett 0:c7393ae16c16 153 op->mid = 0;
Patrick Barrett 0:c7393ae16c16 154 }
Patrick Barrett 0:c7393ae16c16 155
Patrick Barrett 0:c7393ae16c16 156 /*!
Patrick Barrett 0:c7393ae16c16 157 * \brief Subscribes to a Dataport on the Exosite One Platform
Patrick Barrett 0:c7393ae16c16 158 *
Patrick Barrett 0:c7393ae16c16 159 * Begins a subscription to a dataport The callback is called any time the
Patrick Barrett 0:c7393ae16c16 160 * value is updated as well as when the subscription is started.
Patrick Barrett 0:c7393ae16c16 161 *
Patrick Barrett 0:c7393ae16c16 162 * \param[in] alias Alias of dataport to read from
Patrick Barrett 0:c7393ae16c16 163 * \param[in] callback Function pointer to call on change
Patrick Barrett 0:c7393ae16c16 164 *
Patrick Barrett 0:c7393ae16c16 165 * \return EXO_ERROR, EXO_OK on success or error code
Patrick Barrett 0:c7393ae16c16 166 *
Patrick Barrett 0:c7393ae16c16 167 */
Patrick Barrett 0:c7393ae16c16 168 void exo_subscribe(exo_op *op, const char * alias, char * value, const size_t value_max)
Patrick Barrett 0:c7393ae16c16 169 {
Patrick Barrett 0:c7393ae16c16 170 op->type = EXO_SUBSCRIBE;
Patrick Barrett 0:c7393ae16c16 171 op->state = EXO_REQUEST_NEW;
Patrick Barrett 0:c7393ae16c16 172 op->alias = alias;
Patrick Barrett 0:c7393ae16c16 173 op->value = value;
Patrick Barrett 0:c7393ae16c16 174 op->value_max = value_max;
Patrick Barrett 0:c7393ae16c16 175 op->mid = 0;
Patrick Barrett 0:c7393ae16c16 176 }
Patrick Barrett 0:c7393ae16c16 177
Patrick Barrett 11:08bae8fb9824 178 /*!
Patrick Barrett 11:08bae8fb9824 179 * \brief Activates the Device on the Platform
Patrick Barrett 11:08bae8fb9824 180 *
Patrick Barrett 11:08bae8fb9824 181 * Queues an activation request. Usually only used internally.
Patrick Barrett 11:08bae8fb9824 182 *
Patrick Barrett 11:08bae8fb9824 183 */
Patrick Barrett 11:08bae8fb9824 184 void exo_activate(exo_op *op)
Patrick Barrett 11:08bae8fb9824 185 {
Patrick Barrett 11:08bae8fb9824 186 op->type = EXO_ACTIVATE;
Patrick Barrett 11:08bae8fb9824 187 op->state = EXO_REQUEST_NEW;
Patrick Barrett 11:08bae8fb9824 188 op->alias = NULL;
Patrick Barrett 11:08bae8fb9824 189 op->value = NULL;
Patrick Barrett 11:08bae8fb9824 190 op->value_max = 0;
Patrick Barrett 11:08bae8fb9824 191 op->mid = 0;
Patrick Barrett 11:08bae8fb9824 192 }
Patrick Barrett 11:08bae8fb9824 193
Patrick Barrett 0:c7393ae16c16 194 void exo_op_init(exo_op *op)
Patrick Barrett 0:c7393ae16c16 195 {
Patrick Barrett 0:c7393ae16c16 196 op->type = EXO_NULL;
Patrick Barrett 0:c7393ae16c16 197 op->state = EXO_REQUEST_NULL;
Patrick Barrett 0:c7393ae16c16 198 op->alias = NULL;
Patrick Barrett 0:c7393ae16c16 199 op->value = NULL;
Patrick Barrett 0:c7393ae16c16 200 op->value_max = 0;
Patrick Barrett 0:c7393ae16c16 201 op->mid = 0;
Patrick Barrett 10:76deeaebfafb 202 op->obs_seq = 0;
Patrick Barrett 20:e98884244926 203 op->tkl = 0;
Patrick Barrett 20:e98884244926 204 op->token = 0;
Patrick Barrett 13:df08a86dc06d 205 op->timeout = 0;
Patrick Barrett 0:c7393ae16c16 206 }
Patrick Barrett 0:c7393ae16c16 207
Patrick Barrett 0:c7393ae16c16 208 void exo_op_done(exo_op *op)
Patrick Barrett 0:c7393ae16c16 209 {
Patrick Barrett 0:c7393ae16c16 210 if (exo_is_op_subscribe(op)) {
Patrick Barrett 0:c7393ae16c16 211 op->state = EXO_REQUEST_SUBSCRIBED;
Patrick Barrett 0:c7393ae16c16 212 } else {
Patrick Barrett 0:c7393ae16c16 213 exo_op_init(op);
Patrick Barrett 0:c7393ae16c16 214 }
Patrick Barrett 0:c7393ae16c16 215 }
Patrick Barrett 0:c7393ae16c16 216
Patrick Barrett 0:c7393ae16c16 217 uint8_t exo_is_op_valid(exo_op *op)
Patrick Barrett 0:c7393ae16c16 218 {
Patrick Barrett 0:c7393ae16c16 219 return op->type != EXO_NULL;
Patrick Barrett 0:c7393ae16c16 220 }
Patrick Barrett 0:c7393ae16c16 221
Patrick Barrett 0:c7393ae16c16 222 uint8_t exo_is_op_success(exo_op *op)
Patrick Barrett 0:c7393ae16c16 223 {
Patrick Barrett 0:c7393ae16c16 224 return op->state == EXO_REQUEST_SUCCESS;
Patrick Barrett 0:c7393ae16c16 225 }
Patrick Barrett 0:c7393ae16c16 226
Patrick Barrett 0:c7393ae16c16 227 uint8_t exo_is_op_finished(exo_op *op)
Patrick Barrett 0:c7393ae16c16 228 {
Patrick Barrett 0:c7393ae16c16 229 return op->state == EXO_REQUEST_SUCCESS || op->state == EXO_REQUEST_ERROR;
Patrick Barrett 0:c7393ae16c16 230 }
Patrick Barrett 0:c7393ae16c16 231
Patrick Barrett 0:c7393ae16c16 232 uint8_t exo_is_op_read(exo_op *op)
Patrick Barrett 0:c7393ae16c16 233 {
Patrick Barrett 0:c7393ae16c16 234 return op->type == EXO_READ;
Patrick Barrett 0:c7393ae16c16 235 }
Patrick Barrett 0:c7393ae16c16 236
Patrick Barrett 0:c7393ae16c16 237 uint8_t exo_is_op_subscribe(exo_op *op)
Patrick Barrett 0:c7393ae16c16 238 {
Patrick Barrett 0:c7393ae16c16 239 return op->type == EXO_SUBSCRIBE;
Patrick Barrett 0:c7393ae16c16 240 }
Patrick Barrett 0:c7393ae16c16 241
Patrick Barrett 0:c7393ae16c16 242 uint8_t exo_is_op_write(exo_op *op)
Patrick Barrett 0:c7393ae16c16 243 {
Patrick Barrett 0:c7393ae16c16 244 return op->type == EXO_WRITE;
Patrick Barrett 0:c7393ae16c16 245 }
Patrick Barrett 0:c7393ae16c16 246
Patrick Barrett 0:c7393ae16c16 247
Patrick Barrett 0:c7393ae16c16 248 /*!
Patrick Barrett 0:c7393ae16c16 249 * \brief Performs queued operations with the Exosite One Platform
Patrick Barrett 0:c7393ae16c16 250 *
Patrick Barrett 0:c7393ae16c16 251 * Queues a request to read a dataport from the Exosite One Platform. If the
Patrick Barrett 0:c7393ae16c16 252 * request is successful the provided callback will be called with a single
Patrick Barrett 0:c7393ae16c16 253 * parameter, a pointer to the result as a C string.
Patrick Barrett 0:c7393ae16c16 254 *
Patrick Barrett 0:c7393ae16c16 255 * \param[in] alias Alias of dataport to read from
Patrick Barrett 0:c7393ae16c16 256 * \param[in] callback Function pointer to call on success
Patrick Barrett 0:c7393ae16c16 257 *
Patrick Barrett 0:c7393ae16c16 258 * \return EXO_STATE, EXO_OK on success or error code
Patrick Barrett 0:c7393ae16c16 259 *
Patrick Barrett 0:c7393ae16c16 260 */
Patrick Barrett 0:c7393ae16c16 261 exo_state exo_operate(exo_op *op, uint8_t count)
Patrick Barrett 0:c7393ae16c16 262 {
Patrick Barrett 12:68513d2aa2df 263 int i;
Patrick Barrett 12:68513d2aa2df 264
Patrick Barrett 12:68513d2aa2df 265 switch (device_state){
Patrick Barrett 12:68513d2aa2df 266 case EXO_STATE_UNINITIALIZED:
Patrick Barrett 12:68513d2aa2df 267 return EXO_ERROR;
Patrick Barrett 12:68513d2aa2df 268 case EXO_STATE_INITIALIZED:
Patrick Barrett 12:68513d2aa2df 269 case EXO_STATE_BAD_CIK:
Patrick Barrett 18:c463fb80d81d 270 if (op[0].state == EXO_REQUEST_NULL || op[0].timeout < exopal_get_time())
Patrick Barrett 12:68513d2aa2df 271 exo_activate(&op[0]);
Patrick Barrett 12:68513d2aa2df 272 case EXO_STATE_GOOD:
Patrick Barrett 12:68513d2aa2df 273 break;
Patrick Barrett 12:68513d2aa2df 274 }
Patrick Barrett 12:68513d2aa2df 275
Patrick Barrett 12:68513d2aa2df 276 exo_process_waiting_datagrams(op, count);
Patrick Barrett 12:68513d2aa2df 277 exo_process_active_ops(op, count);
Patrick Barrett 12:68513d2aa2df 278
Patrick Barrett 12:68513d2aa2df 279 for (i = 0; i < count; i++) {
Patrick Barrett 12:68513d2aa2df 280 if (op[i].state == EXO_REQUEST_NEW)
Patrick Barrett 12:68513d2aa2df 281 return EXO_BUSY;
Patrick Barrett 12:68513d2aa2df 282 }
Patrick Barrett 12:68513d2aa2df 283
Patrick Barrett 12:68513d2aa2df 284 for (i = 0; i < count; i++) {
Patrick Barrett 12:68513d2aa2df 285 if (op[i].state == EXO_REQUEST_PENDING)
Patrick Barrett 12:68513d2aa2df 286 return EXO_WAITING;
Patrick Barrett 12:68513d2aa2df 287 }
Patrick Barrett 12:68513d2aa2df 288
Patrick Barrett 12:68513d2aa2df 289 return EXO_IDLE;
Patrick Barrett 12:68513d2aa2df 290 }
Patrick Barrett 12:68513d2aa2df 291
Patrick Barrett 12:68513d2aa2df 292 // Internal Functions
Patrick Barrett 12:68513d2aa2df 293
Patrick Barrett 12:68513d2aa2df 294 static void exo_process_waiting_datagrams(exo_op *op, uint8_t count)
Patrick Barrett 12:68513d2aa2df 295 {
Patrick Barrett 23:e94087cd483d 296 uint8_t buf[MINIMUM_DATAGRAM_SIZE];
Patrick Barrett 0:c7393ae16c16 297 coap_pdu pdu;
Patrick Barrett 24:cfbd25fc62c4 298 coap_option opt;
Patrick Barrett 0:c7393ae16c16 299 coap_payload payload;
Patrick Barrett 0:c7393ae16c16 300 int i;
Patrick Barrett 0:c7393ae16c16 301
Patrick Barrett 0:c7393ae16c16 302 pdu.buf = buf;
Patrick Barrett 23:e94087cd483d 303 pdu.max = MINIMUM_DATAGRAM_SIZE;
Patrick Barrett 0:c7393ae16c16 304 pdu.len = 0;
Patrick Barrett 0:c7393ae16c16 305
Patrick Barrett 0:c7393ae16c16 306 // receive a UDP packet if one or more waiting
Patrick Barrett 0:c7393ae16c16 307 while (exopal_udp_recv(pdu.buf, pdu.max, &pdu.len) == 0) {
Patrick Barrett 0:c7393ae16c16 308 if (coap_validate_pkt(&pdu) != CE_NONE)
Patrick Barrett 0:c7393ae16c16 309 continue; //Invalid Packet, Ignore
Patrick Barrett 0:c7393ae16c16 310
Patrick Barrett 0:c7393ae16c16 311 for (i = 0; i < count; i++) {
Patrick Barrett 17:661d4a5b7c1b 312 if (coap_get_type(&pdu) == CT_CON || coap_get_type(&pdu) == CT_NON) {
Patrick Barrett 19:323801b9c74e 313 if (op[i].state == EXO_REQUEST_SUBSCRIBED && coap_get_token(&pdu) == op[i].token) {
Patrick Barrett 19:323801b9c74e 314 if (coap_get_code(&pdu) == CC_CONTENT) {
Patrick Barrett 19:323801b9c74e 315 uint32_t new_seq = 0;
Patrick Barrett 19:323801b9c74e 316 opt = coap_get_option_by_num(&pdu, CON_OBSERVE, 0);
Patrick Barrett 19:323801b9c74e 317 for (int j = 0; j < opt.len; j++) {
Patrick Barrett 19:323801b9c74e 318 new_seq = (new_seq << (8*j)) | opt.val[j];
Patrick Barrett 19:323801b9c74e 319 }
Patrick Barrett 13:df08a86dc06d 320
Patrick Barrett 19:323801b9c74e 321 payload = coap_get_payload(&pdu);
Patrick Barrett 19:323801b9c74e 322 if (payload.len == 0) {
Patrick Barrett 19:323801b9c74e 323 op[i].value[0] = '\0';
Patrick Barrett 19:323801b9c74e 324 } else if (payload.len+1 > op[i].value_max || op[i].value == 0) {
Patrick Barrett 19:323801b9c74e 325 op[i].state = EXO_REQUEST_ERROR;
Patrick Barrett 19:323801b9c74e 326 } else{
Patrick Barrett 19:323801b9c74e 327 memcpy(op[i].value, payload.val, payload.len);
Patrick Barrett 19:323801b9c74e 328 op[i].value[payload.len] = 0;
Patrick Barrett 19:323801b9c74e 329 op[i].mid = coap_get_mid(&pdu);
Patrick Barrett 19:323801b9c74e 330 // TODO: User proper logic to ensure it's a new value not a different, but old one.
Patrick Barrett 19:323801b9c74e 331 if (op[i].obs_seq != new_seq) {
Patrick Barrett 19:323801b9c74e 332 op[i].state = EXO_REQUEST_SUB_ACK_NEW;
Patrick Barrett 19:323801b9c74e 333 op[i].obs_seq = new_seq;
Patrick Barrett 19:323801b9c74e 334 } else {
Patrick Barrett 19:323801b9c74e 335 op[i].state = EXO_REQUEST_SUB_ACK;
Patrick Barrett 19:323801b9c74e 336 }
Patrick Barrett 24:cfbd25fc62c4 337
Patrick Barrett 24:cfbd25fc62c4 338 opt = coap_get_option_by_num(&pdu, CON_MAX_AGE, 0);
Patrick Barrett 24:cfbd25fc62c4 339 uint8_t max_age = 120; // default, 2 minutes, see RFC4787 Sec 4.3
Patrick Barrett 24:cfbd25fc62c4 340 if (opt.num !=0 && opt.len == 1){ // if has Max-Age option, use it
Patrick Barrett 24:cfbd25fc62c4 341 max_age = opt.val[0];
Patrick Barrett 24:cfbd25fc62c4 342 }
Patrick Barrett 24:cfbd25fc62c4 343
Patrick Barrett 24:cfbd25fc62c4 344 // Set timeout between Max-Age to Max-Age + ACK_RANDOM_FACTOR (CoAP Defined)
Patrick Barrett 24:cfbd25fc62c4 345 op[i].timeout = exopal_get_time() + (max_age * 1000000)
Patrick Barrett 24:cfbd25fc62c4 346 + (((uint64_t)rand() % 1500000));
Patrick Barrett 19:323801b9c74e 347 }
Patrick Barrett 19:323801b9c74e 348 } else if (coap_get_code_class(&pdu) != 2) {
Patrick Barrett 13:df08a86dc06d 349 op[i].state = EXO_REQUEST_ERROR;
Patrick Barrett 11:08bae8fb9824 350 }
Patrick Barrett 13:df08a86dc06d 351 break;
Patrick Barrett 0:c7393ae16c16 352 }
Patrick Barrett 17:661d4a5b7c1b 353 } else if (coap_get_type(&pdu) == CT_ACK) {
Patrick Barrett 13:df08a86dc06d 354 if (op[i].state == EXO_REQUEST_PENDING && op[i].mid == coap_get_mid(&pdu)) {
Patrick Barrett 13:df08a86dc06d 355 if (coap_get_code_class(&pdu) == 2) {
Patrick Barrett 17:661d4a5b7c1b 356 switch (op[i].type) {
Patrick Barrett 17:661d4a5b7c1b 357 case EXO_WRITE:
Patrick Barrett 17:661d4a5b7c1b 358 op[i].state = EXO_REQUEST_SUCCESS;
Patrick Barrett 17:661d4a5b7c1b 359 break;
Patrick Barrett 17:661d4a5b7c1b 360 case EXO_READ:
Patrick Barrett 17:661d4a5b7c1b 361 payload = coap_get_payload(&pdu);
Patrick Barrett 17:661d4a5b7c1b 362 if (payload.len == 0) {
Patrick Barrett 17:661d4a5b7c1b 363 op[i].value[0] = '\0';
Patrick Barrett 17:661d4a5b7c1b 364 } else if (payload.len+1 > op[i].value_max || op[i].value == 0) {
Patrick Barrett 17:661d4a5b7c1b 365 op[i].state = EXO_REQUEST_ERROR;
Patrick Barrett 17:661d4a5b7c1b 366 } else{
Patrick Barrett 17:661d4a5b7c1b 367 memcpy(op[i].value, payload.val, payload.len);
Patrick Barrett 17:661d4a5b7c1b 368 op[i].value[payload.len] = 0;
Patrick Barrett 17:661d4a5b7c1b 369 op[i].state = EXO_REQUEST_SUCCESS;
Patrick Barrett 17:661d4a5b7c1b 370 }
Patrick Barrett 17:661d4a5b7c1b 371 break;
Patrick Barrett 17:661d4a5b7c1b 372 case EXO_SUBSCRIBE:
Patrick Barrett 17:661d4a5b7c1b 373 payload = coap_get_payload(&pdu);
Patrick Barrett 17:661d4a5b7c1b 374 if (payload.len == 0) {
Patrick Barrett 17:661d4a5b7c1b 375 op[i].value[0] = '\0';
Patrick Barrett 17:661d4a5b7c1b 376 } else if (payload.len+1 > op[i].value_max || op[i].value == 0) {
Patrick Barrett 17:661d4a5b7c1b 377 op[i].state = EXO_REQUEST_ERROR;
Patrick Barrett 17:661d4a5b7c1b 378 } else{
Patrick Barrett 17:661d4a5b7c1b 379 memcpy(op[i].value, payload.val, payload.len);
Patrick Barrett 17:661d4a5b7c1b 380 op[i].value[payload.len] = 0;
Patrick Barrett 17:661d4a5b7c1b 381 op[i].state = EXO_REQUEST_SUCCESS;
Patrick Barrett 24:cfbd25fc62c4 382
Patrick Barrett 24:cfbd25fc62c4 383 opt = coap_get_option_by_num(&pdu, CON_MAX_AGE, 0);
Patrick Barrett 24:cfbd25fc62c4 384 uint8_t max_age = 120; // default, 2 minutes, see RFC4787 Sec 4.3
Patrick Barrett 24:cfbd25fc62c4 385 if (opt.num !=0 && opt.len == 1){ // if has Max-Age option, use it
Patrick Barrett 24:cfbd25fc62c4 386 max_age = opt.val[0];
Patrick Barrett 24:cfbd25fc62c4 387 }
Patrick Barrett 24:cfbd25fc62c4 388
Patrick Barrett 24:cfbd25fc62c4 389 // Set timeout between Max-Age to Max-Age + ACK_RANDOM_FACTOR (CoAP Defined)
Patrick Barrett 24:cfbd25fc62c4 390 op[i].timeout = exopal_get_time() + (max_age * 1000000)
Patrick Barrett 24:cfbd25fc62c4 391 + (((uint64_t)rand() % 1500000));
Patrick Barrett 17:661d4a5b7c1b 392 }
Patrick Barrett 17:661d4a5b7c1b 393 break;
Patrick Barrett 17:661d4a5b7c1b 394 case EXO_ACTIVATE:
Patrick Barrett 17:661d4a5b7c1b 395 payload = coap_get_payload(&pdu);
Patrick Barrett 17:661d4a5b7c1b 396 if (payload.len == CIK_LENGTH) {
Patrick Barrett 17:661d4a5b7c1b 397 memcpy(cik, payload.val, CIK_LENGTH);
Patrick Barrett 17:661d4a5b7c1b 398 cik[CIK_LENGTH] = 0;
Patrick Barrett 17:661d4a5b7c1b 399 op[i].state = EXO_REQUEST_SUCCESS;
Patrick Barrett 17:661d4a5b7c1b 400 exopal_store_cik(cik);
Patrick Barrett 17:661d4a5b7c1b 401 device_state = EXO_STATE_GOOD;
Patrick Barrett 17:661d4a5b7c1b 402 } else {
Patrick Barrett 17:661d4a5b7c1b 403 op[i].state = EXO_REQUEST_ERROR;
Patrick Barrett 17:661d4a5b7c1b 404 }
Patrick Barrett 17:661d4a5b7c1b 405
Patrick Barrett 17:661d4a5b7c1b 406 // We're done with this op now.
Patrick Barrett 17:661d4a5b7c1b 407 exo_op_init(&op[i]);
Patrick Barrett 17:661d4a5b7c1b 408 break;
Patrick Barrett 17:661d4a5b7c1b 409 case EXO_NULL: // pending null request? shouldn't be possible
Patrick Barrett 17:661d4a5b7c1b 410 continue;
Patrick Barrett 13:df08a86dc06d 411 }
Patrick Barrett 13:df08a86dc06d 412 } else {
Patrick Barrett 13:df08a86dc06d 413 op[i].state = EXO_REQUEST_ERROR;
Patrick Barrett 17:661d4a5b7c1b 414
Patrick Barrett 17:661d4a5b7c1b 415 if (coap_get_code(&pdu) == CC_UNAUTHORIZED){
Patrick Barrett 18:c463fb80d81d 416 //device_state = EXO_STATE_BAD_CIK;
Patrick Barrett 18:c463fb80d81d 417
Patrick Barrett 18:c463fb80d81d 418 if (op[0].type == EXO_NULL || op[0].timeout < exopal_get_time())
Patrick Barrett 18:c463fb80d81d 419 exo_activate(&op[0]);
Patrick Barrett 17:661d4a5b7c1b 420 } else if (coap_get_code(&pdu) == CC_NOT_FOUND) {
Patrick Barrett 17:661d4a5b7c1b 421 device_state = EXO_STATE_GOOD;
Patrick Barrett 17:661d4a5b7c1b 422 }
Patrick Barrett 13:df08a86dc06d 423 }
Patrick Barrett 0:c7393ae16c16 424
Patrick Barrett 17:661d4a5b7c1b 425 break;
Patrick Barrett 17:661d4a5b7c1b 426 }
Patrick Barrett 17:661d4a5b7c1b 427
Patrick Barrett 17:661d4a5b7c1b 428 } else if (coap_get_type(&pdu) == CT_RST) {
Patrick Barrett 17:661d4a5b7c1b 429 if ((op[i].state == EXO_REQUEST_PENDING || op[i].state == EXO_REQUEST_SUBSCRIBED) &&
Patrick Barrett 17:661d4a5b7c1b 430 (op[i].mid == coap_get_mid(&pdu) && op[i].token == coap_get_token(&pdu))){
Patrick Barrett 17:661d4a5b7c1b 431 op[i].state = EXO_REQUEST_ERROR;
Patrick Barrett 13:df08a86dc06d 432 break;
Patrick Barrett 0:c7393ae16c16 433 }
Patrick Barrett 0:c7393ae16c16 434 }
Patrick Barrett 0:c7393ae16c16 435 }
Patrick Barrett 0:c7393ae16c16 436
Patrick Barrett 13:df08a86dc06d 437 // if the above loop ends normally we don't recognize message, reply RST
Patrick Barrett 0:c7393ae16c16 438 if (i == count){
Patrick Barrett 0:c7393ae16c16 439 if (coap_get_type(&pdu) == CT_CON) {
Patrick Barrett 0:c7393ae16c16 440 // this can't fail
Patrick Barrett 0:c7393ae16c16 441 exo_build_msg_rst(&pdu, coap_get_mid(&pdu), coap_get_token(&pdu), coap_get_tkl(&pdu));
Patrick Barrett 0:c7393ae16c16 442
Patrick Barrett 0:c7393ae16c16 443 // best effort, don't bother checking if it failed, nothing we can do it
Patrick Barrett 0:c7393ae16c16 444 // it did anyway
Patrick Barrett 0:c7393ae16c16 445 exopal_udp_send(pdu.buf, pdu.len);
Patrick Barrett 0:c7393ae16c16 446 }
Patrick Barrett 0:c7393ae16c16 447
Patrick Barrett 0:c7393ae16c16 448 break;
Patrick Barrett 0:c7393ae16c16 449 }
Patrick Barrett 0:c7393ae16c16 450 }
Patrick Barrett 12:68513d2aa2df 451 }
Patrick Barrett 0:c7393ae16c16 452
Patrick Barrett 12:68513d2aa2df 453 // process all ops that are in an active state
Patrick Barrett 12:68513d2aa2df 454 static void exo_process_active_ops(exo_op *op, uint8_t count)
Patrick Barrett 12:68513d2aa2df 455 {
Patrick Barrett 23:e94087cd483d 456 uint8_t buf[MINIMUM_DATAGRAM_SIZE];
Patrick Barrett 12:68513d2aa2df 457 coap_pdu pdu;
Patrick Barrett 12:68513d2aa2df 458 int i;
Patrick Barrett 12:68513d2aa2df 459 uint64_t now = exopal_get_time();
Patrick Barrett 12:68513d2aa2df 460
Patrick Barrett 12:68513d2aa2df 461 pdu.buf = buf;
Patrick Barrett 23:e94087cd483d 462 pdu.max = MINIMUM_DATAGRAM_SIZE;
Patrick Barrett 12:68513d2aa2df 463 pdu.len = 0;
Patrick Barrett 12:68513d2aa2df 464
Patrick Barrett 0:c7393ae16c16 465 for (i = 0; i < count; i++) {
Patrick Barrett 0:c7393ae16c16 466 switch (op[i].state) {
Patrick Barrett 0:c7393ae16c16 467 case EXO_REQUEST_NEW:
Patrick Barrett 0:c7393ae16c16 468 // Build and Send Request
Patrick Barrett 0:c7393ae16c16 469 switch (op[i].type) {
Patrick Barrett 0:c7393ae16c16 470 case EXO_READ:
Patrick Barrett 0:c7393ae16c16 471 exo_build_msg_read(&pdu, op[i].alias);
Patrick Barrett 0:c7393ae16c16 472 break;
Patrick Barrett 0:c7393ae16c16 473 case EXO_SUBSCRIBE:
Patrick Barrett 0:c7393ae16c16 474 exo_build_msg_observe(&pdu, op[i].alias);
Patrick Barrett 0:c7393ae16c16 475 break;
Patrick Barrett 0:c7393ae16c16 476 case EXO_WRITE:
Patrick Barrett 0:c7393ae16c16 477 exo_build_msg_write(&pdu, op[i].alias, op[i].value);
Patrick Barrett 0:c7393ae16c16 478 break;
Patrick Barrett 11:08bae8fb9824 479 case EXO_ACTIVATE:
Patrick Barrett 11:08bae8fb9824 480 exo_build_msg_activate(&pdu, vendor, model, serial);
Patrick Barrett 11:08bae8fb9824 481 break;
Patrick Barrett 0:c7393ae16c16 482 default:
Patrick Barrett 0:c7393ae16c16 483 op[i].type = EXO_NULL;
Patrick Barrett 0:c7393ae16c16 484 continue;
Patrick Barrett 0:c7393ae16c16 485 }
Patrick Barrett 0:c7393ae16c16 486
Patrick Barrett 0:c7393ae16c16 487 if (exopal_udp_send(pdu.buf, pdu.len) == 0) {
Patrick Barrett 0:c7393ae16c16 488 op[i].state = EXO_REQUEST_PENDING;
Patrick Barrett 0:c7393ae16c16 489 op[i].timeout = exopal_get_time() + 4000000;
Patrick Barrett 0:c7393ae16c16 490 op[i].mid = coap_get_mid(&pdu);
Patrick Barrett 0:c7393ae16c16 491 op[i].token = coap_get_token(&pdu);
Patrick Barrett 0:c7393ae16c16 492 }
Patrick Barrett 0:c7393ae16c16 493
Patrick Barrett 0:c7393ae16c16 494 break;
Patrick Barrett 10:76deeaebfafb 495 case EXO_REQUEST_SUBSCRIBED:
Patrick Barrett 0:c7393ae16c16 496 case EXO_REQUEST_PENDING:
Patrick Barrett 0:c7393ae16c16 497 // check if pending requests have reached timeout
Patrick Barrett 0:c7393ae16c16 498 if (op[i].timeout <= now){
Patrick Barrett 0:c7393ae16c16 499 switch (op[i].type) {
Patrick Barrett 0:c7393ae16c16 500 case EXO_READ:
Patrick Barrett 0:c7393ae16c16 501 case EXO_WRITE:
Patrick Barrett 0:c7393ae16c16 502 // TODO: may want to do some sort of retry system
Patrick Barrett 0:c7393ae16c16 503 op[i].state = EXO_REQUEST_ERROR;
Patrick Barrett 0:c7393ae16c16 504 break;
Patrick Barrett 0:c7393ae16c16 505 case EXO_SUBSCRIBE:
Patrick Barrett 0:c7393ae16c16 506 // force a new observe request
Patrick Barrett 0:c7393ae16c16 507 op[i].state = EXO_REQUEST_NEW;
Patrick Barrett 0:c7393ae16c16 508 break;
Patrick Barrett 0:c7393ae16c16 509 default:
Patrick Barrett 0:c7393ae16c16 510 break;
Patrick Barrett 0:c7393ae16c16 511 }
Patrick Barrett 0:c7393ae16c16 512 }
Patrick Barrett 0:c7393ae16c16 513 break;
Patrick Barrett 0:c7393ae16c16 514 case EXO_REQUEST_SUB_ACK_NEW:
Patrick Barrett 0:c7393ae16c16 515 case EXO_REQUEST_SUB_ACK:
Patrick Barrett 0:c7393ae16c16 516 // send ack for observe notification
Patrick Barrett 0:c7393ae16c16 517 exo_build_msg_ack(&pdu, coap_get_mid(&pdu));
Patrick Barrett 0:c7393ae16c16 518
Patrick Barrett 0:c7393ae16c16 519 if (exopal_udp_send(pdu.buf, pdu.len) == 0) {
Patrick Barrett 0:c7393ae16c16 520 if (op[i].state == EXO_REQUEST_SUB_ACK)
Patrick Barrett 0:c7393ae16c16 521 op[i].state = EXO_REQUEST_SUBSCRIBED;
Patrick Barrett 0:c7393ae16c16 522 else if (op[i].state == EXO_REQUEST_SUB_ACK_NEW)
Patrick Barrett 0:c7393ae16c16 523 op[i].state = EXO_REQUEST_SUCCESS;
Patrick Barrett 0:c7393ae16c16 524 }
Patrick Barrett 0:c7393ae16c16 525 break;
Patrick Barrett 0:c7393ae16c16 526 default:
Patrick Barrett 0:c7393ae16c16 527 break;
Patrick Barrett 0:c7393ae16c16 528 }
Patrick Barrett 0:c7393ae16c16 529 }
Patrick Barrett 0:c7393ae16c16 530 }
Patrick Barrett 0:c7393ae16c16 531
Patrick Barrett 0:c7393ae16c16 532
Patrick Barrett 0:c7393ae16c16 533 exo_error exo_build_msg_activate(coap_pdu *pdu, const char *vendor, const char *model, const char *serial_number)
Patrick Barrett 0:c7393ae16c16 534 {
Patrick Barrett 0:c7393ae16c16 535 coap_error ret;
Patrick Barrett 0:c7393ae16c16 536 coap_init_pdu(pdu);
Patrick Barrett 0:c7393ae16c16 537 ret = coap_set_version(pdu, COAP_V1);
Patrick Barrett 0:c7393ae16c16 538 ret |= coap_set_type(pdu, CT_CON);
Patrick Barrett 0:c7393ae16c16 539 ret |= coap_set_code(pdu, CC_POST);
Patrick Barrett 0:c7393ae16c16 540 ret |= coap_set_mid(pdu, message_id_counter++);
Patrick Barrett 0:c7393ae16c16 541 ret |= coap_set_token(pdu, rand(), 2);
Patrick Barrett 0:c7393ae16c16 542 ret |= coap_add_option(pdu, CON_URI_PATH, (uint8_t*)"provision", 9);
Patrick Barrett 0:c7393ae16c16 543 ret |= coap_add_option(pdu, CON_URI_PATH, (uint8_t*)"activate", 8);
Patrick Barrett 0:c7393ae16c16 544 ret |= coap_add_option(pdu, CON_URI_PATH, (uint8_t*)vendor, strlen(vendor));
Patrick Barrett 0:c7393ae16c16 545 ret |= coap_add_option(pdu, CON_URI_PATH, (uint8_t*)model, strlen(model));
Patrick Barrett 0:c7393ae16c16 546 ret |= coap_add_option(pdu, CON_URI_PATH, (uint8_t*)serial_number, strlen(serial_number));
Patrick Barrett 0:c7393ae16c16 547
Patrick Barrett 0:c7393ae16c16 548 if (ret != CE_NONE)
Patrick Barrett 0:c7393ae16c16 549 return EXO_GENERAL_ERROR;
Patrick Barrett 0:c7393ae16c16 550
Patrick Barrett 0:c7393ae16c16 551 return EXO_OK;
Patrick Barrett 0:c7393ae16c16 552 }
Patrick Barrett 0:c7393ae16c16 553
Patrick Barrett 0:c7393ae16c16 554 exo_error exo_build_msg_read(coap_pdu *pdu, const char *alias)
Patrick Barrett 0:c7393ae16c16 555 {
Patrick Barrett 0:c7393ae16c16 556 coap_error ret;
Patrick Barrett 0:c7393ae16c16 557 coap_init_pdu(pdu);
Patrick Barrett 0:c7393ae16c16 558 ret = coap_set_version(pdu, COAP_V1);
Patrick Barrett 0:c7393ae16c16 559 ret |= coap_set_type(pdu, CT_CON);
Patrick Barrett 0:c7393ae16c16 560 ret |= coap_set_code(pdu, CC_GET);
Patrick Barrett 0:c7393ae16c16 561 ret |= coap_set_mid(pdu, message_id_counter++);
Patrick Barrett 0:c7393ae16c16 562 ret |= coap_set_token(pdu, rand(), 2);
Patrick Barrett 0:c7393ae16c16 563 ret |= coap_add_option(pdu, CON_URI_PATH, (uint8_t*)"1a", 2);
Patrick Barrett 0:c7393ae16c16 564 ret |= coap_add_option(pdu, CON_URI_PATH, (uint8_t*)alias, strlen(alias));
Patrick Barrett 0:c7393ae16c16 565 ret |= coap_add_option(pdu, CON_URI_QUERY, (uint8_t*)cik, 40);
Patrick Barrett 0:c7393ae16c16 566
Patrick Barrett 0:c7393ae16c16 567 if (ret != CE_NONE)
Patrick Barrett 0:c7393ae16c16 568 return EXO_GENERAL_ERROR;
Patrick Barrett 0:c7393ae16c16 569
Patrick Barrett 0:c7393ae16c16 570 return EXO_OK;
Patrick Barrett 0:c7393ae16c16 571 }
Patrick Barrett 0:c7393ae16c16 572
Patrick Barrett 0:c7393ae16c16 573 exo_error exo_build_msg_observe(coap_pdu *pdu, const char *alias)
Patrick Barrett 0:c7393ae16c16 574 {
Patrick Barrett 0:c7393ae16c16 575 uint8_t obs_opt = 0;
Patrick Barrett 0:c7393ae16c16 576 coap_error ret;
Patrick Barrett 0:c7393ae16c16 577 coap_init_pdu(pdu);
Patrick Barrett 0:c7393ae16c16 578 ret = coap_set_version(pdu, COAP_V1);
Patrick Barrett 0:c7393ae16c16 579 ret |= coap_set_type(pdu, CT_CON);
Patrick Barrett 0:c7393ae16c16 580 ret |= coap_set_code(pdu, CC_GET);
Patrick Barrett 0:c7393ae16c16 581 ret |= coap_set_mid(pdu, message_id_counter++);
Patrick Barrett 0:c7393ae16c16 582 ret |= coap_set_token(pdu, rand(), 2);
Patrick Barrett 0:c7393ae16c16 583 ret |= coap_add_option(pdu, CON_OBSERVE, &obs_opt, 1);
Patrick Barrett 0:c7393ae16c16 584 ret |= coap_add_option(pdu, CON_URI_PATH, (uint8_t*)"1a", 2);
Patrick Barrett 0:c7393ae16c16 585 ret |= coap_add_option(pdu, CON_URI_PATH, (uint8_t*)alias, strlen(alias));
Patrick Barrett 0:c7393ae16c16 586 ret |= coap_add_option(pdu, CON_URI_QUERY, (uint8_t*)cik, 40);
Patrick Barrett 0:c7393ae16c16 587
Patrick Barrett 0:c7393ae16c16 588 if (ret != CE_NONE)
Patrick Barrett 0:c7393ae16c16 589 return EXO_GENERAL_ERROR;
Patrick Barrett 0:c7393ae16c16 590
Patrick Barrett 0:c7393ae16c16 591 return EXO_OK;
Patrick Barrett 0:c7393ae16c16 592 }
Patrick Barrett 0:c7393ae16c16 593
Patrick Barrett 0:c7393ae16c16 594 exo_error exo_build_msg_write(coap_pdu *pdu, const char *alias, const char *value)
Patrick Barrett 0:c7393ae16c16 595 {
Patrick Barrett 0:c7393ae16c16 596 coap_error ret;
Patrick Barrett 0:c7393ae16c16 597 coap_init_pdu(pdu);
Patrick Barrett 0:c7393ae16c16 598 ret = coap_set_version(pdu, COAP_V1);
Patrick Barrett 0:c7393ae16c16 599 ret |= coap_set_type(pdu, CT_CON);
Patrick Barrett 0:c7393ae16c16 600 ret |= coap_set_code(pdu, CC_POST);
Patrick Barrett 0:c7393ae16c16 601 ret |= coap_set_mid(pdu, message_id_counter++);
Patrick Barrett 0:c7393ae16c16 602 ret |= coap_set_token(pdu, rand(), 2);
Patrick Barrett 0:c7393ae16c16 603 ret |= coap_add_option(pdu, CON_URI_PATH, (uint8_t*)"1a", 2);
Patrick Barrett 0:c7393ae16c16 604 ret |= coap_add_option(pdu, CON_URI_PATH, (uint8_t*)alias, strlen(alias));
Patrick Barrett 0:c7393ae16c16 605 ret |= coap_add_option(pdu, CON_URI_QUERY, (uint8_t*)cik, 40);
Patrick Barrett 0:c7393ae16c16 606 ret |= coap_set_payload(pdu, (uint8_t *)value, strlen(value));
Patrick Barrett 0:c7393ae16c16 607
Patrick Barrett 0:c7393ae16c16 608 if (ret != CE_NONE)
Patrick Barrett 0:c7393ae16c16 609 return EXO_GENERAL_ERROR;
Patrick Barrett 0:c7393ae16c16 610
Patrick Barrett 0:c7393ae16c16 611 return EXO_OK;
Patrick Barrett 0:c7393ae16c16 612 }
Patrick Barrett 0:c7393ae16c16 613
Patrick Barrett 0:c7393ae16c16 614 exo_error exo_build_msg_rst(coap_pdu *pdu, const uint16_t mid, const uint64_t token, const uint8_t tkl)
Patrick Barrett 0:c7393ae16c16 615 {
Patrick Barrett 0:c7393ae16c16 616 coap_error ret;
Patrick Barrett 0:c7393ae16c16 617 coap_init_pdu(pdu);
Patrick Barrett 0:c7393ae16c16 618 ret = coap_set_version(pdu, COAP_V1);
Patrick Barrett 0:c7393ae16c16 619 ret |= coap_set_type(pdu, CT_RST);
Patrick Barrett 0:c7393ae16c16 620 ret |= coap_set_code(pdu, CC_EMPTY);
Patrick Barrett 0:c7393ae16c16 621 ret |= coap_set_mid(pdu, mid);
Patrick Barrett 0:c7393ae16c16 622 ret |= coap_set_token(pdu, token, tkl);
Patrick Barrett 0:c7393ae16c16 623
Patrick Barrett 0:c7393ae16c16 624 if (ret != CE_NONE)
Patrick Barrett 0:c7393ae16c16 625 return EXO_GENERAL_ERROR;
Patrick Barrett 0:c7393ae16c16 626
Patrick Barrett 0:c7393ae16c16 627 return EXO_OK;
Patrick Barrett 0:c7393ae16c16 628 }
Patrick Barrett 0:c7393ae16c16 629
Patrick Barrett 0:c7393ae16c16 630 exo_error exo_build_msg_ack(coap_pdu *pdu, const uint16_t mid)
Patrick Barrett 0:c7393ae16c16 631 {
Patrick Barrett 0:c7393ae16c16 632 coap_error ret;
Patrick Barrett 0:c7393ae16c16 633 coap_init_pdu(pdu);
Patrick Barrett 0:c7393ae16c16 634 ret = coap_set_version(pdu, COAP_V1);
Patrick Barrett 0:c7393ae16c16 635 ret |= coap_set_type(pdu, CT_ACK);
Patrick Barrett 0:c7393ae16c16 636 ret |= coap_set_code(pdu, CC_EMPTY);
Patrick Barrett 0:c7393ae16c16 637 ret |= coap_set_mid(pdu, mid);
Patrick Barrett 0:c7393ae16c16 638
Patrick Barrett 0:c7393ae16c16 639 if (ret != CE_NONE)
Patrick Barrett 0:c7393ae16c16 640 return EXO_GENERAL_ERROR;
Patrick Barrett 0:c7393ae16c16 641
Patrick Barrett 0:c7393ae16c16 642 return EXO_OK;
Patrick Barrett 0:c7393ae16c16 643 }
Patrick Barrett 0:c7393ae16c16 644
Patrick Barrett 11:08bae8fb9824 645 exo_error exo_do_activate()
Patrick Barrett 0:c7393ae16c16 646 {
Patrick Barrett 11:08bae8fb9824 647 exo_op op;
Patrick Barrett 11:08bae8fb9824 648
Patrick Barrett 11:08bae8fb9824 649 exo_op_init(&op);
Patrick Barrett 11:08bae8fb9824 650
Patrick Barrett 0:c7393ae16c16 651
Patrick Barrett 11:08bae8fb9824 652 return EXO_OK;
Patrick Barrett 11:08bae8fb9824 653 }
Patrick Barrett 11:08bae8fb9824 654
Patrick Barrett 11:08bae8fb9824 655 uint8_t exo_util_is_ascii_hex(const char *str, size_t len)
Patrick Barrett 11:08bae8fb9824 656 {
Patrick Barrett 11:08bae8fb9824 657 size_t i;
Patrick Barrett 11:08bae8fb9824 658
Patrick Barrett 11:08bae8fb9824 659 for (i = 0; i < len; i++) {
Patrick Barrett 11:08bae8fb9824 660 if (!((str[i] >= 'a' && str[i] <= 'f') ||
Patrick Barrett 11:08bae8fb9824 661 (str[i] >= '0' && str[i] <= '9'))) {
Patrick Barrett 0:c7393ae16c16 662 return 1;
Patrick Barrett 0:c7393ae16c16 663 }
Patrick Barrett 0:c7393ae16c16 664 }
Patrick Barrett 0:c7393ae16c16 665
Patrick Barrett 0:c7393ae16c16 666 return 0;
Patrick Barrett 0:c7393ae16c16 667 }
Patrick Barrett 0:c7393ae16c16 668