Patrick Barrett / libexositecoap

The (alpha of the) official Exosite library, CoAP version.

NOTE: This mirror repository may be out of date, check the main repo for changes. If there are any remind me to update this mirror.

This is an unstable alpha of the Official Exosite library, there are known issues with the port to this platform. You probably shouldn't use this library yet if you just want to get things done.

This version uses CoAP for the application protocol.

src/exosite.c@20:e98884244926, 2015-01-05 (annotated)

Committer:
Patrick Barrett
Date:
Mon Jan 05 14:38:17 2015 -0600
Revision:
20:e98884244926
Parent:
19:323801b9c74e
Child:
23:e94087cd483d
be quiet valgrind

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 0:c7393ae16c16 65 /*!
Patrick Barrett 0:c7393ae16c16 66 * \brief Initializes the Exosite library
Patrick Barrett 0:c7393ae16c16 67 *
Patrick Barrett 0:c7393ae16c16 68 * This **MUST** be called before any other exosite library calls are called.
Patrick Barrett 0:c7393ae16c16 69 *
Patrick Barrett 0:c7393ae16c16 70 * \param[in] *vendor Pointer to string containing the vendor name
Patrick Barrett 0:c7393ae16c16 71 * \param[in] *model Pointer to string containing the model name
Patrick Barrett 0:c7393ae16c16 72 * \param[in] *serial Pointer to string containing the serial number
Patrick Barrett 0:c7393ae16c16 73 *
Patrick Barrett 0:c7393ae16c16 74 * \return EXO_ERROR, EXO_OK on success, else error code
Patrick Barrett 0:c7393ae16c16 75 */
Patrick Barrett 0:c7393ae16c16 76 exo_error exo_init(const char *vendor_in, const char *model_in, const char *serial_in)
Patrick Barrett 0:c7393ae16c16 77 {
Patrick Barrett 0:c7393ae16c16 78 device_state = EXO_STATE_UNINITIALIZED;
Patrick Barrett 0:c7393ae16c16 79
Patrick Barrett 0:c7393ae16c16 80 if (exopal_init() != 0) {
Patrick Barrett 0:c7393ae16c16 81 return EXO_FATAL_ERROR_PAL;
Patrick Barrett 0:c7393ae16c16 82 }
Patrick Barrett 0:c7393ae16c16 83
Patrick Barrett 0:c7393ae16c16 84 srand(time(NULL));
Patrick Barrett 0:c7393ae16c16 85 message_id_counter = rand();
Patrick Barrett 0:c7393ae16c16 86
Patrick Barrett 0:c7393ae16c16 87 serial = serial_in;
Patrick Barrett 0:c7393ae16c16 88 vendor = vendor_in;
Patrick Barrett 0:c7393ae16c16 89 model = model_in;
Patrick Barrett 0:c7393ae16c16 90
Patrick Barrett 0:c7393ae16c16 91 if (exopal_retrieve_cik(cik) > 1){
Patrick Barrett 0:c7393ae16c16 92 return EXO_FATAL_ERROR_PAL;
Patrick Barrett 0:c7393ae16c16 93 } else {
Patrick Barrett 0:c7393ae16c16 94 cik[40] = 0;
Patrick Barrett 0:c7393ae16c16 95 }
Patrick Barrett 0:c7393ae16c16 96
Patrick Barrett 0:c7393ae16c16 97 if (exopal_udp_sock() != 0) {
Patrick Barrett 0:c7393ae16c16 98 return EXO_FATAL_ERROR_PAL;
Patrick Barrett 0:c7393ae16c16 99 }
Patrick Barrett 0:c7393ae16c16 100
Patrick Barrett 0:c7393ae16c16 101 device_state = EXO_STATE_INITIALIZED;
Patrick Barrett 0:c7393ae16c16 102
Patrick Barrett 0:c7393ae16c16 103 return EXO_OK;
Patrick Barrett 0:c7393ae16c16 104 }
Patrick Barrett 0:c7393ae16c16 105
Patrick Barrett 0:c7393ae16c16 106 /*!
Patrick Barrett 0:c7393ae16c16 107 * \brief Queues a Write to the Exosite One Platform
Patrick Barrett 0:c7393ae16c16 108 *
Patrick Barrett 0:c7393ae16c16 109 * Queues a request to write to a dataport.
Patrick Barrett 0:c7393ae16c16 110 *
Patrick Barrett 0:c7393ae16c16 111 * \param[in] *alias Alias of dataport to write to, pointer must remain
Patrick Barrett 0:c7393ae16c16 112 * valid until the request has been sent.
Patrick Barrett 0:c7393ae16c16 113 * \param[in] callback Function pointer to call on success
Patrick Barrett 0:c7393ae16c16 114 *
Patrick Barrett 0:c7393ae16c16 115 * \return EXO_ERROR, EXO_OK on success or error code
Patrick Barrett 0:c7393ae16c16 116 *
Patrick Barrett 0:c7393ae16c16 117 */
Patrick Barrett 0:c7393ae16c16 118
Patrick Barrett 0:c7393ae16c16 119 void exo_write(exo_op *op, const char * alias, const char * value)
Patrick Barrett 0:c7393ae16c16 120 {
Patrick Barrett 0:c7393ae16c16 121 op->type = EXO_WRITE;
Patrick Barrett 0:c7393ae16c16 122 op->state = EXO_REQUEST_NEW;
Patrick Barrett 0:c7393ae16c16 123 op->alias = alias;
Patrick Barrett 0:c7393ae16c16 124 op->value = (char *)value; // this is kinda dirty, I know
Patrick Barrett 0:c7393ae16c16 125 op->value_max = 0;
Patrick Barrett 0:c7393ae16c16 126 op->mid = 0;
Patrick Barrett 0:c7393ae16c16 127 }
Patrick Barrett 0:c7393ae16c16 128
Patrick Barrett 0:c7393ae16c16 129 /*!
Patrick Barrett 0:c7393ae16c16 130 * \brief Queues a Read from the Exosite One Platform
Patrick Barrett 0:c7393ae16c16 131 *
Patrick Barrett 0:c7393ae16c16 132 * Queues a request to read a dataport. If the request is successful, the
Patrick Barrett 0:c7393ae16c16 133 * provided callback will be called with a single parameter, a pointer to the
Patrick Barrett 0:c7393ae16c16 134 * result as a C string.
Patrick Barrett 0:c7393ae16c16 135 *
Patrick Barrett 0:c7393ae16c16 136 * \param[in] *alias Alias of dataport to read from, pointer must remain
Patrick Barrett 0:c7393ae16c16 137 * valid until the request has been sent.
Patrick Barrett 0:c7393ae16c16 138 * \param[in] callback Function pointer to call on success
Patrick Barrett 0:c7393ae16c16 139 *
Patrick Barrett 0:c7393ae16c16 140 * \return EXO_ERROR, EXO_OK on success or error code
Patrick Barrett 0:c7393ae16c16 141 *
Patrick Barrett 0:c7393ae16c16 142 */
Patrick Barrett 0:c7393ae16c16 143 void exo_read(exo_op *op, const char * alias, char * value, const size_t value_max)
Patrick Barrett 0:c7393ae16c16 144 {
Patrick Barrett 0:c7393ae16c16 145 op->type = EXO_READ;
Patrick Barrett 0:c7393ae16c16 146 op->state = EXO_REQUEST_NEW;
Patrick Barrett 0:c7393ae16c16 147 op->alias = alias;
Patrick Barrett 0:c7393ae16c16 148 op->value = value;
Patrick Barrett 0:c7393ae16c16 149 op->value_max = value_max;
Patrick Barrett 0:c7393ae16c16 150 op->mid = 0;
Patrick Barrett 0:c7393ae16c16 151 }
Patrick Barrett 0:c7393ae16c16 152
Patrick Barrett 0:c7393ae16c16 153 /*!
Patrick Barrett 0:c7393ae16c16 154 * \brief Subscribes to a Dataport on the Exosite One Platform
Patrick Barrett 0:c7393ae16c16 155 *
Patrick Barrett 0:c7393ae16c16 156 * Begins a subscription to a dataport The callback is called any time the
Patrick Barrett 0:c7393ae16c16 157 * value is updated as well as when the subscription is started.
Patrick Barrett 0:c7393ae16c16 158 *
Patrick Barrett 0:c7393ae16c16 159 * \param[in] alias Alias of dataport to read from
Patrick Barrett 0:c7393ae16c16 160 * \param[in] callback Function pointer to call on change
Patrick Barrett 0:c7393ae16c16 161 *
Patrick Barrett 0:c7393ae16c16 162 * \return EXO_ERROR, EXO_OK on success or error code
Patrick Barrett 0:c7393ae16c16 163 *
Patrick Barrett 0:c7393ae16c16 164 */
Patrick Barrett 0:c7393ae16c16 165 void exo_subscribe(exo_op *op, const char * alias, char * value, const size_t value_max)
Patrick Barrett 0:c7393ae16c16 166 {
Patrick Barrett 0:c7393ae16c16 167 op->type = EXO_SUBSCRIBE;
Patrick Barrett 0:c7393ae16c16 168 op->state = EXO_REQUEST_NEW;
Patrick Barrett 0:c7393ae16c16 169 op->alias = alias;
Patrick Barrett 0:c7393ae16c16 170 op->value = value;
Patrick Barrett 0:c7393ae16c16 171 op->value_max = value_max;
Patrick Barrett 0:c7393ae16c16 172 op->mid = 0;
Patrick Barrett 0:c7393ae16c16 173 }
Patrick Barrett 0:c7393ae16c16 174
Patrick Barrett 11:08bae8fb9824 175 /*!
Patrick Barrett 11:08bae8fb9824 176 * \brief Activates the Device on the Platform
Patrick Barrett 11:08bae8fb9824 177 *
Patrick Barrett 11:08bae8fb9824 178 * Queues an activation request. Usually only used internally.
Patrick Barrett 11:08bae8fb9824 179 *
Patrick Barrett 11:08bae8fb9824 180 */
Patrick Barrett 11:08bae8fb9824 181 void exo_activate(exo_op *op)
Patrick Barrett 11:08bae8fb9824 182 {
Patrick Barrett 11:08bae8fb9824 183 op->type = EXO_ACTIVATE;
Patrick Barrett 11:08bae8fb9824 184 op->state = EXO_REQUEST_NEW;
Patrick Barrett 11:08bae8fb9824 185 op->alias = NULL;
Patrick Barrett 11:08bae8fb9824 186 op->value = NULL;
Patrick Barrett 11:08bae8fb9824 187 op->value_max = 0;
Patrick Barrett 11:08bae8fb9824 188 op->mid = 0;
Patrick Barrett 11:08bae8fb9824 189 }
Patrick Barrett 11:08bae8fb9824 190
Patrick Barrett 0:c7393ae16c16 191 void exo_op_init(exo_op *op)
Patrick Barrett 0:c7393ae16c16 192 {
Patrick Barrett 0:c7393ae16c16 193 op->type = EXO_NULL;
Patrick Barrett 0:c7393ae16c16 194 op->state = EXO_REQUEST_NULL;
Patrick Barrett 0:c7393ae16c16 195 op->alias = NULL;
Patrick Barrett 0:c7393ae16c16 196 op->value = NULL;
Patrick Barrett 0:c7393ae16c16 197 op->value_max = 0;
Patrick Barrett 0:c7393ae16c16 198 op->mid = 0;
Patrick Barrett 10:76deeaebfafb 199 op->obs_seq = 0;
Patrick Barrett 20:e98884244926 200 op->tkl = 0;
Patrick Barrett 20:e98884244926 201 op->token = 0;
Patrick Barrett 13:df08a86dc06d 202 op->timeout = 0;
Patrick Barrett 0:c7393ae16c16 203 }
Patrick Barrett 0:c7393ae16c16 204
Patrick Barrett 0:c7393ae16c16 205 void exo_op_done(exo_op *op)
Patrick Barrett 0:c7393ae16c16 206 {
Patrick Barrett 0:c7393ae16c16 207 if (exo_is_op_subscribe(op)) {
Patrick Barrett 0:c7393ae16c16 208 op->state = EXO_REQUEST_SUBSCRIBED;
Patrick Barrett 0:c7393ae16c16 209 } else {
Patrick Barrett 0:c7393ae16c16 210 exo_op_init(op);
Patrick Barrett 0:c7393ae16c16 211 }
Patrick Barrett 0:c7393ae16c16 212 }
Patrick Barrett 0:c7393ae16c16 213
Patrick Barrett 0:c7393ae16c16 214 uint8_t exo_is_op_valid(exo_op *op)
Patrick Barrett 0:c7393ae16c16 215 {
Patrick Barrett 0:c7393ae16c16 216 return op->type != EXO_NULL;
Patrick Barrett 0:c7393ae16c16 217 }
Patrick Barrett 0:c7393ae16c16 218
Patrick Barrett 0:c7393ae16c16 219 uint8_t exo_is_op_success(exo_op *op)
Patrick Barrett 0:c7393ae16c16 220 {
Patrick Barrett 0:c7393ae16c16 221 return op->state == EXO_REQUEST_SUCCESS;
Patrick Barrett 0:c7393ae16c16 222 }
Patrick Barrett 0:c7393ae16c16 223
Patrick Barrett 0:c7393ae16c16 224 uint8_t exo_is_op_finished(exo_op *op)
Patrick Barrett 0:c7393ae16c16 225 {
Patrick Barrett 0:c7393ae16c16 226 return op->state == EXO_REQUEST_SUCCESS || op->state == EXO_REQUEST_ERROR;
Patrick Barrett 0:c7393ae16c16 227 }
Patrick Barrett 0:c7393ae16c16 228
Patrick Barrett 0:c7393ae16c16 229 uint8_t exo_is_op_read(exo_op *op)
Patrick Barrett 0:c7393ae16c16 230 {
Patrick Barrett 0:c7393ae16c16 231 return op->type == EXO_READ;
Patrick Barrett 0:c7393ae16c16 232 }
Patrick Barrett 0:c7393ae16c16 233
Patrick Barrett 0:c7393ae16c16 234 uint8_t exo_is_op_subscribe(exo_op *op)
Patrick Barrett 0:c7393ae16c16 235 {
Patrick Barrett 0:c7393ae16c16 236 return op->type == EXO_SUBSCRIBE;
Patrick Barrett 0:c7393ae16c16 237 }
Patrick Barrett 0:c7393ae16c16 238
Patrick Barrett 0:c7393ae16c16 239 uint8_t exo_is_op_write(exo_op *op)
Patrick Barrett 0:c7393ae16c16 240 {
Patrick Barrett 0:c7393ae16c16 241 return op->type == EXO_WRITE;
Patrick Barrett 0:c7393ae16c16 242 }
Patrick Barrett 0:c7393ae16c16 243
Patrick Barrett 0:c7393ae16c16 244
Patrick Barrett 0:c7393ae16c16 245 /*!
Patrick Barrett 0:c7393ae16c16 246 * \brief Performs queued operations with the Exosite One Platform
Patrick Barrett 0:c7393ae16c16 247 *
Patrick Barrett 0:c7393ae16c16 248 * Queues a request to read a dataport from the Exosite One Platform. If the
Patrick Barrett 0:c7393ae16c16 249 * request is successful the provided callback will be called with a single
Patrick Barrett 0:c7393ae16c16 250 * parameter, a pointer to the result as a C string.
Patrick Barrett 0:c7393ae16c16 251 *
Patrick Barrett 0:c7393ae16c16 252 * \param[in] alias Alias of dataport to read from
Patrick Barrett 0:c7393ae16c16 253 * \param[in] callback Function pointer to call on success
Patrick Barrett 0:c7393ae16c16 254 *
Patrick Barrett 0:c7393ae16c16 255 * \return EXO_STATE, EXO_OK on success or error code
Patrick Barrett 0:c7393ae16c16 256 *
Patrick Barrett 0:c7393ae16c16 257 */
Patrick Barrett 0:c7393ae16c16 258 exo_state exo_operate(exo_op *op, uint8_t count)
Patrick Barrett 0:c7393ae16c16 259 {
Patrick Barrett 12:68513d2aa2df 260 int i;
Patrick Barrett 12:68513d2aa2df 261
Patrick Barrett 12:68513d2aa2df 262 switch (device_state){
Patrick Barrett 12:68513d2aa2df 263 case EXO_STATE_UNINITIALIZED:
Patrick Barrett 12:68513d2aa2df 264 return EXO_ERROR;
Patrick Barrett 12:68513d2aa2df 265 case EXO_STATE_INITIALIZED:
Patrick Barrett 12:68513d2aa2df 266 case EXO_STATE_BAD_CIK:
Patrick Barrett 18:c463fb80d81d 267 if (op[0].state == EXO_REQUEST_NULL || op[0].timeout < exopal_get_time())
Patrick Barrett 12:68513d2aa2df 268 exo_activate(&op[0]);
Patrick Barrett 12:68513d2aa2df 269 case EXO_STATE_GOOD:
Patrick Barrett 12:68513d2aa2df 270 break;
Patrick Barrett 12:68513d2aa2df 271 }
Patrick Barrett 12:68513d2aa2df 272
Patrick Barrett 12:68513d2aa2df 273 exo_process_waiting_datagrams(op, count);
Patrick Barrett 12:68513d2aa2df 274 exo_process_active_ops(op, count);
Patrick Barrett 12:68513d2aa2df 275
Patrick Barrett 12:68513d2aa2df 276 for (i = 0; i < count; i++) {
Patrick Barrett 12:68513d2aa2df 277 if (op[i].state == EXO_REQUEST_NEW)
Patrick Barrett 12:68513d2aa2df 278 return EXO_BUSY;
Patrick Barrett 12:68513d2aa2df 279 }
Patrick Barrett 12:68513d2aa2df 280
Patrick Barrett 12:68513d2aa2df 281 for (i = 0; i < count; i++) {
Patrick Barrett 12:68513d2aa2df 282 if (op[i].state == EXO_REQUEST_PENDING)
Patrick Barrett 12:68513d2aa2df 283 return EXO_WAITING;
Patrick Barrett 12:68513d2aa2df 284 }
Patrick Barrett 12:68513d2aa2df 285
Patrick Barrett 12:68513d2aa2df 286 return EXO_IDLE;
Patrick Barrett 12:68513d2aa2df 287 }
Patrick Barrett 12:68513d2aa2df 288
Patrick Barrett 12:68513d2aa2df 289 // Internal Functions
Patrick Barrett 12:68513d2aa2df 290
Patrick Barrett 12:68513d2aa2df 291 static void exo_process_waiting_datagrams(exo_op *op, uint8_t count)
Patrick Barrett 12:68513d2aa2df 292 {
Patrick Barrett 0:c7393ae16c16 293 uint8_t buf[576];
Patrick Barrett 0:c7393ae16c16 294 coap_pdu pdu;
Patrick Barrett 0:c7393ae16c16 295 coap_payload payload;
Patrick Barrett 0:c7393ae16c16 296 int i;
Patrick Barrett 0:c7393ae16c16 297
Patrick Barrett 0:c7393ae16c16 298 pdu.buf = buf;
Patrick Barrett 0:c7393ae16c16 299 pdu.max = 576;
Patrick Barrett 0:c7393ae16c16 300 pdu.len = 0;
Patrick Barrett 0:c7393ae16c16 301
Patrick Barrett 0:c7393ae16c16 302 // receive a UDP packet if one or more waiting
Patrick Barrett 0:c7393ae16c16 303 while (exopal_udp_recv(pdu.buf, pdu.max, &pdu.len) == 0) {
Patrick Barrett 0:c7393ae16c16 304 if (coap_validate_pkt(&pdu) != CE_NONE)
Patrick Barrett 0:c7393ae16c16 305 continue; //Invalid Packet, Ignore
Patrick Barrett 0:c7393ae16c16 306
Patrick Barrett 0:c7393ae16c16 307 for (i = 0; i < count; i++) {
Patrick Barrett 17:661d4a5b7c1b 308 if (coap_get_type(&pdu) == CT_CON || coap_get_type(&pdu) == CT_NON) {
Patrick Barrett 19:323801b9c74e 309 if (op[i].state == EXO_REQUEST_SUBSCRIBED && coap_get_token(&pdu) == op[i].token) {
Patrick Barrett 19:323801b9c74e 310 if (coap_get_code(&pdu) == CC_CONTENT) {
Patrick Barrett 19:323801b9c74e 311 coap_option opt;
Patrick Barrett 19:323801b9c74e 312 uint32_t new_seq = 0;
Patrick Barrett 19:323801b9c74e 313 opt = coap_get_option_by_num(&pdu, CON_OBSERVE, 0);
Patrick Barrett 19:323801b9c74e 314 for (int j = 0; j < opt.len; j++) {
Patrick Barrett 19:323801b9c74e 315 new_seq = (new_seq << (8*j)) | opt.val[j];
Patrick Barrett 19:323801b9c74e 316 }
Patrick Barrett 13:df08a86dc06d 317
Patrick Barrett 19:323801b9c74e 318 payload = coap_get_payload(&pdu);
Patrick Barrett 19:323801b9c74e 319 if (payload.len == 0) {
Patrick Barrett 19:323801b9c74e 320 op[i].value[0] = '\0';
Patrick Barrett 19:323801b9c74e 321 } else if (payload.len+1 > op[i].value_max || op[i].value == 0) {
Patrick Barrett 19:323801b9c74e 322 op[i].state = EXO_REQUEST_ERROR;
Patrick Barrett 19:323801b9c74e 323 } else{
Patrick Barrett 19:323801b9c74e 324 memcpy(op[i].value, payload.val, payload.len);
Patrick Barrett 19:323801b9c74e 325 op[i].value[payload.len] = 0;
Patrick Barrett 19:323801b9c74e 326 op[i].mid = coap_get_mid(&pdu);
Patrick Barrett 19:323801b9c74e 327 // TODO: User proper logic to ensure it's a new value not a different, but old one.
Patrick Barrett 19:323801b9c74e 328 if (op[i].obs_seq != new_seq) {
Patrick Barrett 19:323801b9c74e 329 op[i].state = EXO_REQUEST_SUB_ACK_NEW;
Patrick Barrett 19:323801b9c74e 330 op[i].obs_seq = new_seq;
Patrick Barrett 19:323801b9c74e 331 } else {
Patrick Barrett 19:323801b9c74e 332 op[i].state = EXO_REQUEST_SUB_ACK;
Patrick Barrett 19:323801b9c74e 333 }
Patrick Barrett 19:323801b9c74e 334 }
Patrick Barrett 19:323801b9c74e 335 } else if (coap_get_code_class(&pdu) != 2) {
Patrick Barrett 13:df08a86dc06d 336 op[i].state = EXO_REQUEST_ERROR;
Patrick Barrett 11:08bae8fb9824 337 }
Patrick Barrett 13:df08a86dc06d 338 break;
Patrick Barrett 0:c7393ae16c16 339 }
Patrick Barrett 17:661d4a5b7c1b 340 } else if (coap_get_type(&pdu) == CT_ACK) {
Patrick Barrett 13:df08a86dc06d 341 if (op[i].state == EXO_REQUEST_PENDING && op[i].mid == coap_get_mid(&pdu)) {
Patrick Barrett 13:df08a86dc06d 342 if (coap_get_code_class(&pdu) == 2) {
Patrick Barrett 17:661d4a5b7c1b 343 switch (op[i].type) {
Patrick Barrett 17:661d4a5b7c1b 344 case EXO_WRITE:
Patrick Barrett 17:661d4a5b7c1b 345 op[i].state = EXO_REQUEST_SUCCESS;
Patrick Barrett 17:661d4a5b7c1b 346 break;
Patrick Barrett 17:661d4a5b7c1b 347 case EXO_READ:
Patrick Barrett 17:661d4a5b7c1b 348 payload = coap_get_payload(&pdu);
Patrick Barrett 17:661d4a5b7c1b 349 if (payload.len == 0) {
Patrick Barrett 17:661d4a5b7c1b 350 op[i].value[0] = '\0';
Patrick Barrett 17:661d4a5b7c1b 351 } else if (payload.len+1 > op[i].value_max || op[i].value == 0) {
Patrick Barrett 17:661d4a5b7c1b 352 op[i].state = EXO_REQUEST_ERROR;
Patrick Barrett 17:661d4a5b7c1b 353 } else{
Patrick Barrett 17:661d4a5b7c1b 354 memcpy(op[i].value, payload.val, payload.len);
Patrick Barrett 17:661d4a5b7c1b 355 op[i].value[payload.len] = 0;
Patrick Barrett 17:661d4a5b7c1b 356 op[i].state = EXO_REQUEST_SUCCESS;
Patrick Barrett 17:661d4a5b7c1b 357 }
Patrick Barrett 17:661d4a5b7c1b 358 break;
Patrick Barrett 17:661d4a5b7c1b 359 case EXO_SUBSCRIBE:
Patrick Barrett 17:661d4a5b7c1b 360 payload = coap_get_payload(&pdu);
Patrick Barrett 17:661d4a5b7c1b 361 if (payload.len == 0) {
Patrick Barrett 17:661d4a5b7c1b 362 op[i].value[0] = '\0';
Patrick Barrett 17:661d4a5b7c1b 363 } else if (payload.len+1 > op[i].value_max || op[i].value == 0) {
Patrick Barrett 17:661d4a5b7c1b 364 op[i].state = EXO_REQUEST_ERROR;
Patrick Barrett 17:661d4a5b7c1b 365 } else{
Patrick Barrett 17:661d4a5b7c1b 366 memcpy(op[i].value, payload.val, payload.len);
Patrick Barrett 17:661d4a5b7c1b 367 op[i].value[payload.len] = 0;
Patrick Barrett 17:661d4a5b7c1b 368 op[i].state = EXO_REQUEST_SUCCESS;
Patrick Barrett 17:661d4a5b7c1b 369 op[i].timeout = exopal_get_time() + 120000000 + (rand() % 15 * 100000);
Patrick Barrett 17:661d4a5b7c1b 370 }
Patrick Barrett 17:661d4a5b7c1b 371 break;
Patrick Barrett 17:661d4a5b7c1b 372 case EXO_ACTIVATE:
Patrick Barrett 17:661d4a5b7c1b 373 payload = coap_get_payload(&pdu);
Patrick Barrett 17:661d4a5b7c1b 374 if (payload.len == CIK_LENGTH) {
Patrick Barrett 17:661d4a5b7c1b 375 memcpy(cik, payload.val, CIK_LENGTH);
Patrick Barrett 17:661d4a5b7c1b 376 cik[CIK_LENGTH] = 0;
Patrick Barrett 17:661d4a5b7c1b 377 op[i].state = EXO_REQUEST_SUCCESS;
Patrick Barrett 17:661d4a5b7c1b 378 exopal_store_cik(cik);
Patrick Barrett 17:661d4a5b7c1b 379 device_state = EXO_STATE_GOOD;
Patrick Barrett 17:661d4a5b7c1b 380 } else {
Patrick Barrett 17:661d4a5b7c1b 381 op[i].state = EXO_REQUEST_ERROR;
Patrick Barrett 17:661d4a5b7c1b 382 }
Patrick Barrett 17:661d4a5b7c1b 383
Patrick Barrett 17:661d4a5b7c1b 384 // We're done with this op now.
Patrick Barrett 17:661d4a5b7c1b 385 exo_op_init(&op[i]);
Patrick Barrett 17:661d4a5b7c1b 386 break;
Patrick Barrett 17:661d4a5b7c1b 387 case EXO_NULL: // pending null request? shouldn't be possible
Patrick Barrett 17:661d4a5b7c1b 388 continue;
Patrick Barrett 13:df08a86dc06d 389 }
Patrick Barrett 13:df08a86dc06d 390 } else {
Patrick Barrett 13:df08a86dc06d 391 op[i].state = EXO_REQUEST_ERROR;
Patrick Barrett 17:661d4a5b7c1b 392
Patrick Barrett 17:661d4a5b7c1b 393 if (coap_get_code(&pdu) == CC_UNAUTHORIZED){
Patrick Barrett 18:c463fb80d81d 394 //device_state = EXO_STATE_BAD_CIK;
Patrick Barrett 18:c463fb80d81d 395
Patrick Barrett 18:c463fb80d81d 396 if (op[0].type == EXO_NULL || op[0].timeout < exopal_get_time())
Patrick Barrett 18:c463fb80d81d 397 exo_activate(&op[0]);
Patrick Barrett 17:661d4a5b7c1b 398 } else if (coap_get_code(&pdu) == CC_NOT_FOUND) {
Patrick Barrett 17:661d4a5b7c1b 399 device_state = EXO_STATE_GOOD;
Patrick Barrett 17:661d4a5b7c1b 400 }
Patrick Barrett 13:df08a86dc06d 401 }
Patrick Barrett 0:c7393ae16c16 402
Patrick Barrett 17:661d4a5b7c1b 403 break;
Patrick Barrett 17:661d4a5b7c1b 404 }
Patrick Barrett 17:661d4a5b7c1b 405
Patrick Barrett 17:661d4a5b7c1b 406 } else if (coap_get_type(&pdu) == CT_RST) {
Patrick Barrett 17:661d4a5b7c1b 407 if ((op[i].state == EXO_REQUEST_PENDING || op[i].state == EXO_REQUEST_SUBSCRIBED) &&
Patrick Barrett 17:661d4a5b7c1b 408 (op[i].mid == coap_get_mid(&pdu) && op[i].token == coap_get_token(&pdu))){
Patrick Barrett 17:661d4a5b7c1b 409 op[i].state = EXO_REQUEST_ERROR;
Patrick Barrett 13:df08a86dc06d 410 break;
Patrick Barrett 0:c7393ae16c16 411 }
Patrick Barrett 0:c7393ae16c16 412 }
Patrick Barrett 0:c7393ae16c16 413 }
Patrick Barrett 0:c7393ae16c16 414
Patrick Barrett 13:df08a86dc06d 415 // if the above loop ends normally we don't recognize message, reply RST
Patrick Barrett 0:c7393ae16c16 416 if (i == count){
Patrick Barrett 0:c7393ae16c16 417 if (coap_get_type(&pdu) == CT_CON) {
Patrick Barrett 0:c7393ae16c16 418 // this can't fail
Patrick Barrett 0:c7393ae16c16 419 exo_build_msg_rst(&pdu, coap_get_mid(&pdu), coap_get_token(&pdu), coap_get_tkl(&pdu));
Patrick Barrett 0:c7393ae16c16 420
Patrick Barrett 0:c7393ae16c16 421 // best effort, don't bother checking if it failed, nothing we can do it
Patrick Barrett 0:c7393ae16c16 422 // it did anyway
Patrick Barrett 0:c7393ae16c16 423 exopal_udp_send(pdu.buf, pdu.len);
Patrick Barrett 0:c7393ae16c16 424 }
Patrick Barrett 0:c7393ae16c16 425
Patrick Barrett 0:c7393ae16c16 426 break;
Patrick Barrett 0:c7393ae16c16 427 }
Patrick Barrett 0:c7393ae16c16 428 }
Patrick Barrett 12:68513d2aa2df 429 }
Patrick Barrett 0:c7393ae16c16 430
Patrick Barrett 12:68513d2aa2df 431 // process all ops that are in an active state
Patrick Barrett 12:68513d2aa2df 432 static void exo_process_active_ops(exo_op *op, uint8_t count)
Patrick Barrett 12:68513d2aa2df 433 {
Patrick Barrett 12:68513d2aa2df 434 uint8_t buf[576];
Patrick Barrett 12:68513d2aa2df 435 coap_pdu pdu;
Patrick Barrett 12:68513d2aa2df 436 int i;
Patrick Barrett 12:68513d2aa2df 437 uint64_t now = exopal_get_time();
Patrick Barrett 12:68513d2aa2df 438
Patrick Barrett 12:68513d2aa2df 439 pdu.buf = buf;
Patrick Barrett 12:68513d2aa2df 440 pdu.max = 576;
Patrick Barrett 12:68513d2aa2df 441 pdu.len = 0;
Patrick Barrett 12:68513d2aa2df 442
Patrick Barrett 0:c7393ae16c16 443 for (i = 0; i < count; i++) {
Patrick Barrett 0:c7393ae16c16 444 switch (op[i].state) {
Patrick Barrett 0:c7393ae16c16 445 case EXO_REQUEST_NEW:
Patrick Barrett 0:c7393ae16c16 446 // Build and Send Request
Patrick Barrett 0:c7393ae16c16 447 switch (op[i].type) {
Patrick Barrett 0:c7393ae16c16 448 case EXO_READ:
Patrick Barrett 0:c7393ae16c16 449 exo_build_msg_read(&pdu, op[i].alias);
Patrick Barrett 0:c7393ae16c16 450 break;
Patrick Barrett 0:c7393ae16c16 451 case EXO_SUBSCRIBE:
Patrick Barrett 0:c7393ae16c16 452 exo_build_msg_observe(&pdu, op[i].alias);
Patrick Barrett 0:c7393ae16c16 453 break;
Patrick Barrett 0:c7393ae16c16 454 case EXO_WRITE:
Patrick Barrett 0:c7393ae16c16 455 exo_build_msg_write(&pdu, op[i].alias, op[i].value);
Patrick Barrett 0:c7393ae16c16 456 break;
Patrick Barrett 11:08bae8fb9824 457 case EXO_ACTIVATE:
Patrick Barrett 11:08bae8fb9824 458 exo_build_msg_activate(&pdu, vendor, model, serial);
Patrick Barrett 11:08bae8fb9824 459 break;
Patrick Barrett 0:c7393ae16c16 460 default:
Patrick Barrett 0:c7393ae16c16 461 op[i].type = EXO_NULL;
Patrick Barrett 0:c7393ae16c16 462 continue;
Patrick Barrett 0:c7393ae16c16 463 }
Patrick Barrett 0:c7393ae16c16 464
Patrick Barrett 0:c7393ae16c16 465 if (exopal_udp_send(pdu.buf, pdu.len) == 0) {
Patrick Barrett 0:c7393ae16c16 466 op[i].state = EXO_REQUEST_PENDING;
Patrick Barrett 0:c7393ae16c16 467 op[i].timeout = exopal_get_time() + 4000000;
Patrick Barrett 0:c7393ae16c16 468 op[i].mid = coap_get_mid(&pdu);
Patrick Barrett 0:c7393ae16c16 469 op[i].token = coap_get_token(&pdu);
Patrick Barrett 0:c7393ae16c16 470 }
Patrick Barrett 0:c7393ae16c16 471
Patrick Barrett 0:c7393ae16c16 472 break;
Patrick Barrett 10:76deeaebfafb 473 case EXO_REQUEST_SUBSCRIBED:
Patrick Barrett 0:c7393ae16c16 474 case EXO_REQUEST_PENDING:
Patrick Barrett 0:c7393ae16c16 475 // check if pending requests have reached timeout
Patrick Barrett 0:c7393ae16c16 476 if (op[i].timeout <= now){
Patrick Barrett 0:c7393ae16c16 477 switch (op[i].type) {
Patrick Barrett 0:c7393ae16c16 478 case EXO_READ:
Patrick Barrett 0:c7393ae16c16 479 case EXO_WRITE:
Patrick Barrett 0:c7393ae16c16 480 // TODO: may want to do some sort of retry system
Patrick Barrett 0:c7393ae16c16 481 op[i].state = EXO_REQUEST_ERROR;
Patrick Barrett 0:c7393ae16c16 482 break;
Patrick Barrett 0:c7393ae16c16 483 case EXO_SUBSCRIBE:
Patrick Barrett 0:c7393ae16c16 484 // force a new observe request
Patrick Barrett 0:c7393ae16c16 485 op[i].state = EXO_REQUEST_NEW;
Patrick Barrett 0:c7393ae16c16 486 break;
Patrick Barrett 0:c7393ae16c16 487 default:
Patrick Barrett 0:c7393ae16c16 488 break;
Patrick Barrett 0:c7393ae16c16 489 }
Patrick Barrett 0:c7393ae16c16 490 }
Patrick Barrett 0:c7393ae16c16 491 break;
Patrick Barrett 0:c7393ae16c16 492 case EXO_REQUEST_SUB_ACK_NEW:
Patrick Barrett 0:c7393ae16c16 493 case EXO_REQUEST_SUB_ACK:
Patrick Barrett 0:c7393ae16c16 494 // send ack for observe notification
Patrick Barrett 0:c7393ae16c16 495 exo_build_msg_ack(&pdu, coap_get_mid(&pdu));
Patrick Barrett 0:c7393ae16c16 496
Patrick Barrett 0:c7393ae16c16 497 if (exopal_udp_send(pdu.buf, pdu.len) == 0) {
Patrick Barrett 0:c7393ae16c16 498 if (op[i].state == EXO_REQUEST_SUB_ACK)
Patrick Barrett 0:c7393ae16c16 499 op[i].state = EXO_REQUEST_SUBSCRIBED;
Patrick Barrett 0:c7393ae16c16 500 else if (op[i].state == EXO_REQUEST_SUB_ACK_NEW)
Patrick Barrett 0:c7393ae16c16 501 op[i].state = EXO_REQUEST_SUCCESS;
Patrick Barrett 0:c7393ae16c16 502
Patrick Barrett 0:c7393ae16c16 503 // TODO: this should get set to Max-Age value, hard coding 120 s
Patrick Barrett 10:76deeaebfafb 504 op[i].timeout = exopal_get_time() + 120000000 + (rand() % 15 * 100000);
Patrick Barrett 0:c7393ae16c16 505 }
Patrick Barrett 0:c7393ae16c16 506 break;
Patrick Barrett 0:c7393ae16c16 507 default:
Patrick Barrett 0:c7393ae16c16 508 break;
Patrick Barrett 0:c7393ae16c16 509 }
Patrick Barrett 0:c7393ae16c16 510 }
Patrick Barrett 0:c7393ae16c16 511 }
Patrick Barrett 0:c7393ae16c16 512
Patrick Barrett 0:c7393ae16c16 513
Patrick Barrett 0:c7393ae16c16 514 exo_error exo_build_msg_activate(coap_pdu *pdu, const char *vendor, const char *model, const char *serial_number)
Patrick Barrett 0:c7393ae16c16 515 {
Patrick Barrett 0:c7393ae16c16 516 coap_error ret;
Patrick Barrett 0:c7393ae16c16 517 coap_init_pdu(pdu);
Patrick Barrett 0:c7393ae16c16 518 ret = coap_set_version(pdu, COAP_V1);
Patrick Barrett 0:c7393ae16c16 519 ret |= coap_set_type(pdu, CT_CON);
Patrick Barrett 0:c7393ae16c16 520 ret |= coap_set_code(pdu, CC_POST);
Patrick Barrett 0:c7393ae16c16 521 ret |= coap_set_mid(pdu, message_id_counter++);
Patrick Barrett 0:c7393ae16c16 522 ret |= coap_set_token(pdu, rand(), 2);
Patrick Barrett 0:c7393ae16c16 523 ret |= coap_add_option(pdu, CON_URI_PATH, (uint8_t*)"provision", 9);
Patrick Barrett 0:c7393ae16c16 524 ret |= coap_add_option(pdu, CON_URI_PATH, (uint8_t*)"activate", 8);
Patrick Barrett 0:c7393ae16c16 525 ret |= coap_add_option(pdu, CON_URI_PATH, (uint8_t*)vendor, strlen(vendor));
Patrick Barrett 0:c7393ae16c16 526 ret |= coap_add_option(pdu, CON_URI_PATH, (uint8_t*)model, strlen(model));
Patrick Barrett 0:c7393ae16c16 527 ret |= coap_add_option(pdu, CON_URI_PATH, (uint8_t*)serial_number, strlen(serial_number));
Patrick Barrett 0:c7393ae16c16 528
Patrick Barrett 0:c7393ae16c16 529 if (ret != CE_NONE)
Patrick Barrett 0:c7393ae16c16 530 return EXO_GENERAL_ERROR;
Patrick Barrett 0:c7393ae16c16 531
Patrick Barrett 0:c7393ae16c16 532 return EXO_OK;
Patrick Barrett 0:c7393ae16c16 533 }
Patrick Barrett 0:c7393ae16c16 534
Patrick Barrett 0:c7393ae16c16 535 exo_error exo_build_msg_read(coap_pdu *pdu, const char *alias)
Patrick Barrett 0:c7393ae16c16 536 {
Patrick Barrett 0:c7393ae16c16 537 coap_error ret;
Patrick Barrett 0:c7393ae16c16 538 coap_init_pdu(pdu);
Patrick Barrett 0:c7393ae16c16 539 ret = coap_set_version(pdu, COAP_V1);
Patrick Barrett 0:c7393ae16c16 540 ret |= coap_set_type(pdu, CT_CON);
Patrick Barrett 0:c7393ae16c16 541 ret |= coap_set_code(pdu, CC_GET);
Patrick Barrett 0:c7393ae16c16 542 ret |= coap_set_mid(pdu, message_id_counter++);
Patrick Barrett 0:c7393ae16c16 543 ret |= coap_set_token(pdu, rand(), 2);
Patrick Barrett 0:c7393ae16c16 544 ret |= coap_add_option(pdu, CON_URI_PATH, (uint8_t*)"1a", 2);
Patrick Barrett 0:c7393ae16c16 545 ret |= coap_add_option(pdu, CON_URI_PATH, (uint8_t*)alias, strlen(alias));
Patrick Barrett 0:c7393ae16c16 546 ret |= coap_add_option(pdu, CON_URI_QUERY, (uint8_t*)cik, 40);
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_observe(coap_pdu *pdu, const char *alias)
Patrick Barrett 0:c7393ae16c16 555 {
Patrick Barrett 0:c7393ae16c16 556 uint8_t obs_opt = 0;
Patrick Barrett 0:c7393ae16c16 557 coap_error ret;
Patrick Barrett 0:c7393ae16c16 558 coap_init_pdu(pdu);
Patrick Barrett 0:c7393ae16c16 559 ret = coap_set_version(pdu, COAP_V1);
Patrick Barrett 0:c7393ae16c16 560 ret |= coap_set_type(pdu, CT_CON);
Patrick Barrett 0:c7393ae16c16 561 ret |= coap_set_code(pdu, CC_GET);
Patrick Barrett 0:c7393ae16c16 562 ret |= coap_set_mid(pdu, message_id_counter++);
Patrick Barrett 0:c7393ae16c16 563 ret |= coap_set_token(pdu, rand(), 2);
Patrick Barrett 0:c7393ae16c16 564 ret |= coap_add_option(pdu, CON_OBSERVE, &obs_opt, 1);
Patrick Barrett 0:c7393ae16c16 565 ret |= coap_add_option(pdu, CON_URI_PATH, (uint8_t*)"1a", 2);
Patrick Barrett 0:c7393ae16c16 566 ret |= coap_add_option(pdu, CON_URI_PATH, (uint8_t*)alias, strlen(alias));
Patrick Barrett 0:c7393ae16c16 567 ret |= coap_add_option(pdu, CON_URI_QUERY, (uint8_t*)cik, 40);
Patrick Barrett 0:c7393ae16c16 568
Patrick Barrett 0:c7393ae16c16 569 if (ret != CE_NONE)
Patrick Barrett 0:c7393ae16c16 570 return EXO_GENERAL_ERROR;
Patrick Barrett 0:c7393ae16c16 571
Patrick Barrett 0:c7393ae16c16 572 return EXO_OK;
Patrick Barrett 0:c7393ae16c16 573 }
Patrick Barrett 0:c7393ae16c16 574
Patrick Barrett 0:c7393ae16c16 575 exo_error exo_build_msg_write(coap_pdu *pdu, const char *alias, const char *value)
Patrick Barrett 0:c7393ae16c16 576 {
Patrick Barrett 0:c7393ae16c16 577 coap_error ret;
Patrick Barrett 0:c7393ae16c16 578 coap_init_pdu(pdu);
Patrick Barrett 0:c7393ae16c16 579 ret = coap_set_version(pdu, COAP_V1);
Patrick Barrett 0:c7393ae16c16 580 ret |= coap_set_type(pdu, CT_CON);
Patrick Barrett 0:c7393ae16c16 581 ret |= coap_set_code(pdu, CC_POST);
Patrick Barrett 0:c7393ae16c16 582 ret |= coap_set_mid(pdu, message_id_counter++);
Patrick Barrett 0:c7393ae16c16 583 ret |= coap_set_token(pdu, rand(), 2);
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 ret |= coap_set_payload(pdu, (uint8_t *)value, strlen(value));
Patrick Barrett 0:c7393ae16c16 588
Patrick Barrett 0:c7393ae16c16 589 if (ret != CE_NONE)
Patrick Barrett 0:c7393ae16c16 590 return EXO_GENERAL_ERROR;
Patrick Barrett 0:c7393ae16c16 591
Patrick Barrett 0:c7393ae16c16 592 return EXO_OK;
Patrick Barrett 0:c7393ae16c16 593 }
Patrick Barrett 0:c7393ae16c16 594
Patrick Barrett 0:c7393ae16c16 595 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 596 {
Patrick Barrett 0:c7393ae16c16 597 coap_error ret;
Patrick Barrett 0:c7393ae16c16 598 coap_init_pdu(pdu);
Patrick Barrett 0:c7393ae16c16 599 ret = coap_set_version(pdu, COAP_V1);
Patrick Barrett 0:c7393ae16c16 600 ret |= coap_set_type(pdu, CT_RST);
Patrick Barrett 0:c7393ae16c16 601 ret |= coap_set_code(pdu, CC_EMPTY);
Patrick Barrett 0:c7393ae16c16 602 ret |= coap_set_mid(pdu, mid);
Patrick Barrett 0:c7393ae16c16 603 ret |= coap_set_token(pdu, token, tkl);
Patrick Barrett 0:c7393ae16c16 604
Patrick Barrett 0:c7393ae16c16 605 if (ret != CE_NONE)
Patrick Barrett 0:c7393ae16c16 606 return EXO_GENERAL_ERROR;
Patrick Barrett 0:c7393ae16c16 607
Patrick Barrett 0:c7393ae16c16 608 return EXO_OK;
Patrick Barrett 0:c7393ae16c16 609 }
Patrick Barrett 0:c7393ae16c16 610
Patrick Barrett 0:c7393ae16c16 611 exo_error exo_build_msg_ack(coap_pdu *pdu, const uint16_t mid)
Patrick Barrett 0:c7393ae16c16 612 {
Patrick Barrett 0:c7393ae16c16 613 coap_error ret;
Patrick Barrett 0:c7393ae16c16 614 coap_init_pdu(pdu);
Patrick Barrett 0:c7393ae16c16 615 ret = coap_set_version(pdu, COAP_V1);
Patrick Barrett 0:c7393ae16c16 616 ret |= coap_set_type(pdu, CT_ACK);
Patrick Barrett 0:c7393ae16c16 617 ret |= coap_set_code(pdu, CC_EMPTY);
Patrick Barrett 0:c7393ae16c16 618 ret |= coap_set_mid(pdu, mid);
Patrick Barrett 0:c7393ae16c16 619
Patrick Barrett 0:c7393ae16c16 620 if (ret != CE_NONE)
Patrick Barrett 0:c7393ae16c16 621 return EXO_GENERAL_ERROR;
Patrick Barrett 0:c7393ae16c16 622
Patrick Barrett 0:c7393ae16c16 623 return EXO_OK;
Patrick Barrett 0:c7393ae16c16 624 }
Patrick Barrett 0:c7393ae16c16 625
Patrick Barrett 11:08bae8fb9824 626 exo_error exo_do_activate()
Patrick Barrett 0:c7393ae16c16 627 {
Patrick Barrett 11:08bae8fb9824 628 exo_op op;
Patrick Barrett 11:08bae8fb9824 629
Patrick Barrett 11:08bae8fb9824 630 exo_op_init(&op);
Patrick Barrett 11:08bae8fb9824 631
Patrick Barrett 0:c7393ae16c16 632
Patrick Barrett 11:08bae8fb9824 633 return EXO_OK;
Patrick Barrett 11:08bae8fb9824 634 }
Patrick Barrett 11:08bae8fb9824 635
Patrick Barrett 11:08bae8fb9824 636 uint8_t exo_util_is_ascii_hex(const char *str, size_t len)
Patrick Barrett 11:08bae8fb9824 637 {
Patrick Barrett 11:08bae8fb9824 638 size_t i;
Patrick Barrett 11:08bae8fb9824 639
Patrick Barrett 11:08bae8fb9824 640 for (i = 0; i < len; i++) {
Patrick Barrett 11:08bae8fb9824 641 if (!((str[i] >= 'a' && str[i] <= 'f') ||
Patrick Barrett 11:08bae8fb9824 642 (str[i] >= '0' && str[i] <= '9'))) {
Patrick Barrett 0:c7393ae16c16 643 return 1;
Patrick Barrett 0:c7393ae16c16 644 }
Patrick Barrett 0:c7393ae16c16 645 }
Patrick Barrett 0:c7393ae16c16 646
Patrick Barrett 0:c7393ae16c16 647 return 0;
Patrick Barrett 0:c7393ae16c16 648 }
Patrick Barrett 0:c7393ae16c16 649