Iftikhar Aziz / LSS_Rev_1

h

Dependencies:   C027_Support mbed-dev

Fork of C027_SupportTest_coapp by Umar Naeem

Coap/coap_msg.h@40:da5f84f19a24, 2017-08-25 (annotated)

Committer:
iftaziz
Date:
Fri Aug 25 10:40:13 2017 +0000
Revision:
40:da5f84f19a24
Parent:
34:d6ce8f961b8b 
iazi

Who changed what in which revision?

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ranaumarnaeem 34:d6ce8f961b8b 1 /*
ranaumarnaeem 34:d6ce8f961b8b 2 * Copyright (c) 2015 Keith Cullen.
ranaumarnaeem 34:d6ce8f961b8b 3 * All Rights Reserved.
ranaumarnaeem 34:d6ce8f961b8b 4 *
ranaumarnaeem 34:d6ce8f961b8b 5 * Redistribution and use in source and binary forms, with or without
ranaumarnaeem 34:d6ce8f961b8b 6 * modification, are permitted provided that the following conditions
ranaumarnaeem 34:d6ce8f961b8b 7 * are met:
ranaumarnaeem 34:d6ce8f961b8b 8 * 1. Redistributions of source code must retain the above copyright
ranaumarnaeem 34:d6ce8f961b8b 9 * notice, this list of conditions and the following disclaimer.
ranaumarnaeem 34:d6ce8f961b8b 10 * 2. Redistributions in binary form must reproduce the above copyright
ranaumarnaeem 34:d6ce8f961b8b 11 * notice, this list of conditions and the following disclaimer in the
ranaumarnaeem 34:d6ce8f961b8b 12 * documentation and/or other materials provided with the distribution.
ranaumarnaeem 34:d6ce8f961b8b 13 * 3. The name of the author may not be used to endorse or promote products
ranaumarnaeem 34:d6ce8f961b8b 14 * derived from this software without specific prior written permission.
ranaumarnaeem 34:d6ce8f961b8b 15 *
ranaumarnaeem 34:d6ce8f961b8b 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR
ranaumarnaeem 34:d6ce8f961b8b 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
ranaumarnaeem 34:d6ce8f961b8b 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
ranaumarnaeem 34:d6ce8f961b8b 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
ranaumarnaeem 34:d6ce8f961b8b 20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
ranaumarnaeem 34:d6ce8f961b8b 21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
ranaumarnaeem 34:d6ce8f961b8b 22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
ranaumarnaeem 34:d6ce8f961b8b 23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
ranaumarnaeem 34:d6ce8f961b8b 24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
ranaumarnaeem 34:d6ce8f961b8b 25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
ranaumarnaeem 34:d6ce8f961b8b 26 */
ranaumarnaeem 34:d6ce8f961b8b 27
ranaumarnaeem 34:d6ce8f961b8b 28 /**
ranaumarnaeem 34:d6ce8f961b8b 29 * @file coap_msg.h
ranaumarnaeem 34:d6ce8f961b8b 30 *
ranaumarnaeem 34:d6ce8f961b8b 31 * @brief Include file for the FreeCoAP message parser/formatter library
ranaumarnaeem 34:d6ce8f961b8b 32 */
ranaumarnaeem 34:d6ce8f961b8b 33
ranaumarnaeem 34:d6ce8f961b8b 34 #ifndef COAP_MSG_H
ranaumarnaeem 34:d6ce8f961b8b 35 #define COAP_MSG_H
ranaumarnaeem 34:d6ce8f961b8b 36
ranaumarnaeem 34:d6ce8f961b8b 37 #include <stddef.h>
ranaumarnaeem 34:d6ce8f961b8b 38
ranaumarnaeem 34:d6ce8f961b8b 39 #define htons(n) (((((unsigned short)(n) & 0xFF)) << 8) | (((unsigned short)(n) & 0xFF00) >> 8))
ranaumarnaeem 34:d6ce8f961b8b 40 #define ntohs(n) (((((unsigned short)(n) & 0xFF)) << 8) | (((unsigned short)(n) & 0xFF00) >> 8))
ranaumarnaeem 34:d6ce8f961b8b 41
ranaumarnaeem 34:d6ce8f961b8b 42 #define COAP_MSG_VER 0x01 /**< CoAP version */
ranaumarnaeem 34:d6ce8f961b8b 43 #define COAP_MSG_MAX_TOKEN_LEN 8 /**< Maximum token length */
ranaumarnaeem 34:d6ce8f961b8b 44 #define COAP_MSG_MAX_CODE_CLASS 7 /**< Maximum code class */
ranaumarnaeem 34:d6ce8f961b8b 45 #define COAP_MSG_MAX_CODE_DETAIL 31 /**< Maximum code detail */
ranaumarnaeem 34:d6ce8f961b8b 46 #define COAP_MSG_MAX_MSG_ID ((1 << 16) - 1) /**< Maximum message ID */
ranaumarnaeem 34:d6ce8f961b8b 47
ranaumarnaeem 34:d6ce8f961b8b 48 #define COAP_MSG_OP_URI_PATH_NUM 11 /**< Uri-path option number */
ranaumarnaeem 34:d6ce8f961b8b 49 #define COAP_MSG_OP_URI_PATH_MAX_LEN 256 /**< Maximum buffer length for a reconstructed URI path */
ranaumarnaeem 34:d6ce8f961b8b 50
ranaumarnaeem 34:d6ce8f961b8b 51 #define COAP_MSG_MAX_BUF_LEN 1152 /**< Maximum buffer length for header and payload */
ranaumarnaeem 34:d6ce8f961b8b 52
ranaumarnaeem 34:d6ce8f961b8b 53 #define coap_msg_op_num_is_critical(num) ((num) & 1) /**< Indicate if an option is critical */
ranaumarnaeem 34:d6ce8f961b8b 54 #define coap_msg_op_num_is_unsafe(num) ((num) & 2) /**< Indicate if an option is unsafe to forward */
ranaumarnaeem 34:d6ce8f961b8b 55 #define coap_msg_op_num_no_cache_key(num) ((num & 0x1e) == 0x1c) /**< Indicate if an option is not part of the cache key */
ranaumarnaeem 34:d6ce8f961b8b 56
ranaumarnaeem 34:d6ce8f961b8b 57 #define coap_msg_op_get_num(op) ((op)->num) /**< Get the option number from an option */
ranaumarnaeem 34:d6ce8f961b8b 58 #define coap_msg_op_set_num(op, num) ((op)->num = (num)) /**< Set the option number in an option */
ranaumarnaeem 34:d6ce8f961b8b 59 #define coap_msg_op_get_len(op) ((op)->len) /**< Get the option length from an option */
ranaumarnaeem 34:d6ce8f961b8b 60 #define coap_msg_op_set_len(op, len) ((op)->len = (len)) /**< Set the option length in an option */
ranaumarnaeem 34:d6ce8f961b8b 61 #define coap_msg_op_get_val(op) ((op)->val) /**< Get the option value from an option */
ranaumarnaeem 34:d6ce8f961b8b 62 #define coap_msg_op_set_val(op, val) ((op)->val = (val)) /**< Set the option value in an option */
ranaumarnaeem 34:d6ce8f961b8b 63 #define coap_msg_op_get_next(op) ((op)->next) /**< Get the next pointer from an option */
ranaumarnaeem 34:d6ce8f961b8b 64 #define coap_msg_op_set_next(op, next_op) ((op)->next = (next_op)) /**< Set the next pointer in an option */
ranaumarnaeem 34:d6ce8f961b8b 65
ranaumarnaeem 34:d6ce8f961b8b 66 #define coap_msg_get_ver(msg) ((msg)->ver) /**< Get the version from a message */
ranaumarnaeem 34:d6ce8f961b8b 67 #define coap_msg_get_type(msg) ((msg)->type) /**< Get the type from a message */
ranaumarnaeem 34:d6ce8f961b8b 68 #define coap_msg_get_token_len(msg) ((msg)->token_len) /**< Get the token length from a message */
ranaumarnaeem 34:d6ce8f961b8b 69 #define coap_msg_get_code_class(msg) ((msg)->code_class) /**< Get the code class from a message */
ranaumarnaeem 34:d6ce8f961b8b 70 #define coap_msg_get_code_detail(msg) ((msg)->code_detail) /**< Get the code detail from a message */
ranaumarnaeem 34:d6ce8f961b8b 71 #define coap_msg_get_msg_id(msg) ((msg)->msg_id) /**< Get the message ID from message */
ranaumarnaeem 34:d6ce8f961b8b 72 #define coap_msg_get_token(msg) ((msg)->token) /**< Get the token from a message */
ranaumarnaeem 34:d6ce8f961b8b 73 #define coap_msg_get_first_op(msg) ((msg)->op_list.first) /**< Get the first option from a message */
ranaumarnaeem 34:d6ce8f961b8b 74 #define coap_msg_get_payload(msg) ((msg)->payload) /**< Get the payload from a message */
ranaumarnaeem 34:d6ce8f961b8b 75 #define coap_msg_get_payload_len(msg) ((msg)->payload_len) /**< Get the payload length from a message */
ranaumarnaeem 34:d6ce8f961b8b 76 #define coap_msg_is_empty(msg) (((msg)->code_class == 0) && ((msg)->code_detail == 0))
ranaumarnaeem 34:d6ce8f961b8b 77 /**< Indicate if a message is empty */
ranaumarnaeem 34:d6ce8f961b8b 78
ranaumarnaeem 34:d6ce8f961b8b 79 /**
ranaumarnaeem 34:d6ce8f961b8b 80 * @brief Message type enumeration
ranaumarnaeem 34:d6ce8f961b8b 81 */
ranaumarnaeem 34:d6ce8f961b8b 82 typedef enum
ranaumarnaeem 34:d6ce8f961b8b 83 {
ranaumarnaeem 34:d6ce8f961b8b 84 COAP_MSG_CON = 0x0, /**< Confirmable message */
ranaumarnaeem 34:d6ce8f961b8b 85 COAP_MSG_NON = 0x1, /**< Non-confirmable message */
ranaumarnaeem 34:d6ce8f961b8b 86 COAP_MSG_ACK = 0x2, /**< Acknowledgement message */
ranaumarnaeem 34:d6ce8f961b8b 87 COAP_MSG_RST = 0x3 /**< Reset message */
ranaumarnaeem 34:d6ce8f961b8b 88 }
ranaumarnaeem 34:d6ce8f961b8b 89 coap_msg_type_t;
ranaumarnaeem 34:d6ce8f961b8b 90
ranaumarnaeem 34:d6ce8f961b8b 91 /**
ranaumarnaeem 34:d6ce8f961b8b 92 * @brief Code class enumeration
ranaumarnaeem 34:d6ce8f961b8b 93 */
ranaumarnaeem 34:d6ce8f961b8b 94 typedef enum
ranaumarnaeem 34:d6ce8f961b8b 95 {
ranaumarnaeem 34:d6ce8f961b8b 96 COAP_MSG_REQ = 0, /**< Request */
ranaumarnaeem 34:d6ce8f961b8b 97 COAP_MSG_SUCCESS = 2, /**< Success response */
ranaumarnaeem 34:d6ce8f961b8b 98 COAP_MSG_CLIENT_ERR = 4, /**< Client error response */
ranaumarnaeem 34:d6ce8f961b8b 99 COAP_MSG_SERVER_ERR = 5, /**< Server error response */
ranaumarnaeem 34:d6ce8f961b8b 100 }
ranaumarnaeem 34:d6ce8f961b8b 101 coap_msg_class_t;
ranaumarnaeem 34:d6ce8f961b8b 102
ranaumarnaeem 34:d6ce8f961b8b 103 /**
ranaumarnaeem 34:d6ce8f961b8b 104 * @brief Code detail enumeration
ranaumarnaeem 34:d6ce8f961b8b 105 */
ranaumarnaeem 34:d6ce8f961b8b 106 typedef enum
ranaumarnaeem 34:d6ce8f961b8b 107 {
ranaumarnaeem 34:d6ce8f961b8b 108 COAP_MSG_GET = 1, /**< Get request method */
ranaumarnaeem 34:d6ce8f961b8b 109 COAP_MSG_POST = 2, /**< Post request method */
ranaumarnaeem 34:d6ce8f961b8b 110 COAP_MSG_PUT = 3, /**< Put request method */
ranaumarnaeem 34:d6ce8f961b8b 111 COAP_MSG_DELETE =4 /**< Delete request method */
ranaumarnaeem 34:d6ce8f961b8b 112 }
ranaumarnaeem 34:d6ce8f961b8b 113 coap_msg_method_t;
ranaumarnaeem 34:d6ce8f961b8b 114
ranaumarnaeem 34:d6ce8f961b8b 115 /**
ranaumarnaeem 34:d6ce8f961b8b 116 * @brief Success response code detail enumeration
ranaumarnaeem 34:d6ce8f961b8b 117 */
ranaumarnaeem 34:d6ce8f961b8b 118 typedef enum
ranaumarnaeem 34:d6ce8f961b8b 119 {
ranaumarnaeem 34:d6ce8f961b8b 120 COAP_MSG_CREATED = 1, /**< Created success response */
ranaumarnaeem 34:d6ce8f961b8b 121 COAP_MSG_DELETED = 2, /**< Deleted success response */
ranaumarnaeem 34:d6ce8f961b8b 122 COAP_MSG_VALID = 3, /**< Valid success response */
ranaumarnaeem 34:d6ce8f961b8b 123 COAP_MSG_CHANGED = 4, /**< Changed success response */
ranaumarnaeem 34:d6ce8f961b8b 124 COAP_MSG_CONTENT = 5 /**< Content success response */
ranaumarnaeem 34:d6ce8f961b8b 125 }
ranaumarnaeem 34:d6ce8f961b8b 126 coap_msg_success_t;
ranaumarnaeem 34:d6ce8f961b8b 127
ranaumarnaeem 34:d6ce8f961b8b 128 /**
ranaumarnaeem 34:d6ce8f961b8b 129 * @brief Client error response code detail enumeration
ranaumarnaeem 34:d6ce8f961b8b 130 */
ranaumarnaeem 34:d6ce8f961b8b 131 typedef enum
ranaumarnaeem 34:d6ce8f961b8b 132 {
ranaumarnaeem 34:d6ce8f961b8b 133 COAP_MSG_BAD_REQ = 0, /**< Bad request client error */
ranaumarnaeem 34:d6ce8f961b8b 134 COAP_MSG_UNAUTHORIZED = 1, /**< Unauthorized client error */
ranaumarnaeem 34:d6ce8f961b8b 135 COAP_MSG_BAD_OPTION = 2, /**< Bad option client error */
ranaumarnaeem 34:d6ce8f961b8b 136 COAP_MSG_FORBIDDEN = 3, /**< Forbidden client error */
ranaumarnaeem 34:d6ce8f961b8b 137 COAP_MSG_NOT_FOUND = 4, /**< Not found client error */
ranaumarnaeem 34:d6ce8f961b8b 138 COAP_MSG_METHOD_NOT_ALLOWED = 5, /**< Method not allowed client error */
ranaumarnaeem 34:d6ce8f961b8b 139 COAP_MSG_NOT_ACCEPTABLE = 6, /**< Not acceptable client error */
ranaumarnaeem 34:d6ce8f961b8b 140 COAP_MSG_PRECOND_FAILED = 12, /**< Precondition failed client error */
ranaumarnaeem 34:d6ce8f961b8b 141 COAP_MSG_REQ_ENT_TOO_LARGE = 13, /**< Request entity too large client error */
ranaumarnaeem 34:d6ce8f961b8b 142 COAP_MSG_UNSUP_CONT_FMT = 15 /**< Unsupported content-format client error */
ranaumarnaeem 34:d6ce8f961b8b 143 }
ranaumarnaeem 34:d6ce8f961b8b 144 coap_msg_client_err_t;
ranaumarnaeem 34:d6ce8f961b8b 145
ranaumarnaeem 34:d6ce8f961b8b 146 /**
ranaumarnaeem 34:d6ce8f961b8b 147 * @brief Server error response code detail enumeration
ranaumarnaeem 34:d6ce8f961b8b 148 */
ranaumarnaeem 34:d6ce8f961b8b 149 typedef enum
ranaumarnaeem 34:d6ce8f961b8b 150 {
ranaumarnaeem 34:d6ce8f961b8b 151 COAP_MSG_INT_SERVER_ERR = 0, /**< Internal server error */
ranaumarnaeem 34:d6ce8f961b8b 152 COAP_MSG_NOT_IMPL = 1, /**< Not implemented server error */
ranaumarnaeem 34:d6ce8f961b8b 153 COAP_MSG_BAD_GATEWAY = 2, /**< Bad gateway server error */
ranaumarnaeem 34:d6ce8f961b8b 154 COAP_MSG_SERV_UNAVAIL = 3, /**< Service unavailable server error */
ranaumarnaeem 34:d6ce8f961b8b 155 COAP_MSG_GATEWAY_TIMEOUT = 4, /**< Gateway timeout server error */
ranaumarnaeem 34:d6ce8f961b8b 156 COAP_MSG_PROXY_NOT_SUP = 5 /**< Proxying not supported server error */
ranaumarnaeem 34:d6ce8f961b8b 157 }
ranaumarnaeem 34:d6ce8f961b8b 158 coap_msg_server_err_t;
ranaumarnaeem 34:d6ce8f961b8b 159
ranaumarnaeem 34:d6ce8f961b8b 160 /**
ranaumarnaeem 34:d6ce8f961b8b 161 * @brief Option number enumeration
ranaumarnaeem 34:d6ce8f961b8b 162 */
ranaumarnaeem 34:d6ce8f961b8b 163 typedef enum
ranaumarnaeem 34:d6ce8f961b8b 164 {
ranaumarnaeem 34:d6ce8f961b8b 165 COAP_MSG_IF_MATCH = 1, /**< If-Match option number */
ranaumarnaeem 34:d6ce8f961b8b 166 COAP_MSG_URI_HOST = 3, /**< URI-Host option number */
ranaumarnaeem 34:d6ce8f961b8b 167 COAP_MSG_ETAG = 4, /**< Entity-Tag option number */
ranaumarnaeem 34:d6ce8f961b8b 168 COAP_MSG_IF_NONE_MATCH = 5, /**< If-None-Match option number */
ranaumarnaeem 34:d6ce8f961b8b 169 COAP_MSG_URI_PORT = 7, /**< URI-Port option number */
ranaumarnaeem 34:d6ce8f961b8b 170 COAP_MSG_LOCATION_PATH = 8, /**< Location-Path option number */
ranaumarnaeem 34:d6ce8f961b8b 171 COAP_MSG_URI_PATH = 11, /**< URI-Path option number */
ranaumarnaeem 34:d6ce8f961b8b 172 COAP_MSG_CONTENT_FORMAT = 12, /**< Content-Format option number */
ranaumarnaeem 34:d6ce8f961b8b 173 COAP_MSG_MAX_AGE = 14, /**< Max-Age option number */
ranaumarnaeem 34:d6ce8f961b8b 174 COAP_MSG_URI_QUERY = 15, /**< URI-Query option number */
ranaumarnaeem 34:d6ce8f961b8b 175 COAP_MSG_ACCEPT = 17, /**< Accept option number */
ranaumarnaeem 34:d6ce8f961b8b 176 COAP_MSG_LOCATION_QUERY = 20, /**< Location-Query option number */
ranaumarnaeem 34:d6ce8f961b8b 177 COAP_MSG_PROXY_URI = 35, /**< Proxy-URI option number */
ranaumarnaeem 34:d6ce8f961b8b 178 COAP_MSG_PROXY_SCHEME = 39, /**< Proxy-Scheme option number */
ranaumarnaeem 34:d6ce8f961b8b 179 COAP_MSG_SIZE1 = 60 /**< Size1 option number */
ranaumarnaeem 34:d6ce8f961b8b 180 }
ranaumarnaeem 34:d6ce8f961b8b 181 coap_msg_op_num_t;
ranaumarnaeem 34:d6ce8f961b8b 182
ranaumarnaeem 34:d6ce8f961b8b 183 /**
ranaumarnaeem 34:d6ce8f961b8b 184 * @brief Option structure
ranaumarnaeem 34:d6ce8f961b8b 185 */
ranaumarnaeem 34:d6ce8f961b8b 186 typedef struct coap_msg_op
ranaumarnaeem 34:d6ce8f961b8b 187 {
ranaumarnaeem 34:d6ce8f961b8b 188 unsigned num; /**< Option number */
ranaumarnaeem 34:d6ce8f961b8b 189 unsigned len; /**< Option length */
ranaumarnaeem 34:d6ce8f961b8b 190 char *val; /**< Pointer to a buffer containing the option value */
ranaumarnaeem 34:d6ce8f961b8b 191 struct coap_msg_op *next; /**< Pointer to the next option structure in the list */
ranaumarnaeem 34:d6ce8f961b8b 192 }
ranaumarnaeem 34:d6ce8f961b8b 193 coap_msg_op_t;
ranaumarnaeem 34:d6ce8f961b8b 194
ranaumarnaeem 34:d6ce8f961b8b 195 /**
ranaumarnaeem 34:d6ce8f961b8b 196 * @brief Option linked-list structure
ranaumarnaeem 34:d6ce8f961b8b 197 */
ranaumarnaeem 34:d6ce8f961b8b 198 typedef struct
ranaumarnaeem 34:d6ce8f961b8b 199 {
ranaumarnaeem 34:d6ce8f961b8b 200 coap_msg_op_t *first; /**< Pointer to the first option structure in the list */
ranaumarnaeem 34:d6ce8f961b8b 201 coap_msg_op_t *last; /**< Pointer to the last option structure in the list */
ranaumarnaeem 34:d6ce8f961b8b 202 }
ranaumarnaeem 34:d6ce8f961b8b 203 coap_msg_op_list_t;
ranaumarnaeem 34:d6ce8f961b8b 204
ranaumarnaeem 34:d6ce8f961b8b 205 /**
ranaumarnaeem 34:d6ce8f961b8b 206 * @brief Message structure
ranaumarnaeem 34:d6ce8f961b8b 207 */
ranaumarnaeem 34:d6ce8f961b8b 208 typedef struct
ranaumarnaeem 34:d6ce8f961b8b 209 {
ranaumarnaeem 34:d6ce8f961b8b 210 unsigned ver; /**< CoAP version */
ranaumarnaeem 34:d6ce8f961b8b 211 coap_msg_type_t type; /**< Message type */
ranaumarnaeem 34:d6ce8f961b8b 212 unsigned token_len; /**< Token length */
ranaumarnaeem 34:d6ce8f961b8b 213 unsigned code_class; /**< Code class */
ranaumarnaeem 34:d6ce8f961b8b 214 unsigned code_detail; /**< Code detail */
ranaumarnaeem 34:d6ce8f961b8b 215 unsigned msg_id; /**< Message ID */
ranaumarnaeem 34:d6ce8f961b8b 216 char token[COAP_MSG_MAX_TOKEN_LEN]; /**< Token value */
ranaumarnaeem 34:d6ce8f961b8b 217 coap_msg_op_list_t op_list; /**< Option list */
ranaumarnaeem 34:d6ce8f961b8b 218 char *payload; /**< Pointer to a buffer containing the payload */
ranaumarnaeem 34:d6ce8f961b8b 219 size_t payload_len; /**< Length of the payload */
ranaumarnaeem 34:d6ce8f961b8b 220 }
ranaumarnaeem 34:d6ce8f961b8b 221 coap_msg_t;
ranaumarnaeem 34:d6ce8f961b8b 222
ranaumarnaeem 34:d6ce8f961b8b 223 /**
ranaumarnaeem 34:d6ce8f961b8b 224 * @brief Check if option is recognized
ranaumarnaeem 34:d6ce8f961b8b 225 *
ranaumarnaeem 34:d6ce8f961b8b 226 * @param[in] num Option number
ranaumarnaeem 34:d6ce8f961b8b 227 *
ranaumarnaeem 34:d6ce8f961b8b 228 * @returns Operation status
ranaumarnaeem 34:d6ce8f961b8b 229 * @retval 1 Option is recognized
ranaumarnaeem 34:d6ce8f961b8b 230 * @retval 0 Option is not recognized
ranaumarnaeem 34:d6ce8f961b8b 231 */
ranaumarnaeem 34:d6ce8f961b8b 232 int coap_msg_op_num_is_recognized(unsigned num);
ranaumarnaeem 34:d6ce8f961b8b 233
ranaumarnaeem 34:d6ce8f961b8b 234 /**
ranaumarnaeem 34:d6ce8f961b8b 235 * @brief Generate a random string of bytes
ranaumarnaeem 34:d6ce8f961b8b 236 *
ranaumarnaeem 34:d6ce8f961b8b 237 * @param[out] buf Pointer to the buffer to store the random string
ranaumarnaeem 34:d6ce8f961b8b 238 * @param[in] len Length of the buffer
ranaumarnaeem 34:d6ce8f961b8b 239 */
ranaumarnaeem 34:d6ce8f961b8b 240 void coap_msg_gen_rand_str(char *buf, size_t len);
ranaumarnaeem 34:d6ce8f961b8b 241
ranaumarnaeem 34:d6ce8f961b8b 242 /**
ranaumarnaeem 34:d6ce8f961b8b 243 * @brief Initialise a message structure
ranaumarnaeem 34:d6ce8f961b8b 244 *
ranaumarnaeem 34:d6ce8f961b8b 245 * @param[out] msg Pointer to a message structure
ranaumarnaeem 34:d6ce8f961b8b 246 */
ranaumarnaeem 34:d6ce8f961b8b 247 void coap_msg_create(coap_msg_t *msg);
ranaumarnaeem 34:d6ce8f961b8b 248
ranaumarnaeem 34:d6ce8f961b8b 249 /**
ranaumarnaeem 34:d6ce8f961b8b 250 * @brief Deinitialise a message structure
ranaumarnaeem 34:d6ce8f961b8b 251 *
ranaumarnaeem 34:d6ce8f961b8b 252 * @param[in,out] msg Pointer to a message structure
ranaumarnaeem 34:d6ce8f961b8b 253 */
ranaumarnaeem 34:d6ce8f961b8b 254 void coap_msg_destroy(coap_msg_t *msg);
ranaumarnaeem 34:d6ce8f961b8b 255
ranaumarnaeem 34:d6ce8f961b8b 256 /**
ranaumarnaeem 34:d6ce8f961b8b 257 * @brief Deinitialise and initialise a message structure
ranaumarnaeem 34:d6ce8f961b8b 258 *
ranaumarnaeem 34:d6ce8f961b8b 259 * @param[in,out] msg Pointer to a message structure
ranaumarnaeem 34:d6ce8f961b8b 260 */
ranaumarnaeem 34:d6ce8f961b8b 261 void coap_msg_reset(coap_msg_t *msg);
ranaumarnaeem 34:d6ce8f961b8b 262
ranaumarnaeem 34:d6ce8f961b8b 263 /**
ranaumarnaeem 34:d6ce8f961b8b 264 * @brief Check that all of the critical options in a message are recognized
ranaumarnaeem 34:d6ce8f961b8b 265 *
ranaumarnaeem 34:d6ce8f961b8b 266 * @param[in] msg Pointer to message structure
ranaumarnaeem 34:d6ce8f961b8b 267 *
ranaumarnaeem 34:d6ce8f961b8b 268 * @returns Operation status or bad option number
ranaumarnaeem 34:d6ce8f961b8b 269 * @retval 0 Success
ranaumarnaeem 34:d6ce8f961b8b 270 * @retval >0 Bad option number
ranaumarnaeem 34:d6ce8f961b8b 271 */
ranaumarnaeem 34:d6ce8f961b8b 272 unsigned coap_msg_check_critical_ops(coap_msg_t *msg);
ranaumarnaeem 34:d6ce8f961b8b 273
ranaumarnaeem 34:d6ce8f961b8b 274 /**
ranaumarnaeem 34:d6ce8f961b8b 275 * @brief Check that all of the unsafe options in a message are recognized
ranaumarnaeem 34:d6ce8f961b8b 276 *
ranaumarnaeem 34:d6ce8f961b8b 277 * @param[in] msg Pointer to message structure
ranaumarnaeem 34:d6ce8f961b8b 278 *
ranaumarnaeem 34:d6ce8f961b8b 279 * @returns Operation status or bad option number
ranaumarnaeem 34:d6ce8f961b8b 280 * @retval 0 Success
ranaumarnaeem 34:d6ce8f961b8b 281 * @retval >0 Bad option number
ranaumarnaeem 34:d6ce8f961b8b 282 */
ranaumarnaeem 34:d6ce8f961b8b 283 unsigned coap_msg_check_unsafe_ops(coap_msg_t *msg);
ranaumarnaeem 34:d6ce8f961b8b 284
ranaumarnaeem 34:d6ce8f961b8b 285 /**
ranaumarnaeem 34:d6ce8f961b8b 286 * @brief Extract the type and message ID values from a message
ranaumarnaeem 34:d6ce8f961b8b 287 *
ranaumarnaeem 34:d6ce8f961b8b 288 * If a message contains a format error, this function
ranaumarnaeem 34:d6ce8f961b8b 289 * will attempt to extract the type and message ID so
ranaumarnaeem 34:d6ce8f961b8b 290 * that a reset message can be returned to the sender.
ranaumarnaeem 34:d6ce8f961b8b 291 *
ranaumarnaeem 34:d6ce8f961b8b 292 * @param[in] buf Pointer to a buffer containing the message
ranaumarnaeem 34:d6ce8f961b8b 293 * @param[in] len Length of the buffer
ranaumarnaeem 34:d6ce8f961b8b 294 * @param[out] type Pointer to field to store the type value
ranaumarnaeem 34:d6ce8f961b8b 295 * @param[out] msg_id Pointer to a field to store the message ID value
ranaumarnaeem 34:d6ce8f961b8b 296 *
ranaumarnaeem 34:d6ce8f961b8b 297 * @returns Operation status
ranaumarnaeem 34:d6ce8f961b8b 298 * @retval 0 Success
ranaumarnaeem 34:d6ce8f961b8b 299 * @retval <0 Error
ranaumarnaeem 34:d6ce8f961b8b 300 */
ranaumarnaeem 34:d6ce8f961b8b 301 int coap_msg_parse_type_msg_id(char *buf, size_t len, unsigned *type, unsigned *msg_id);
ranaumarnaeem 34:d6ce8f961b8b 302
ranaumarnaeem 34:d6ce8f961b8b 303 /**
ranaumarnaeem 34:d6ce8f961b8b 304 * @brief Parse a message
ranaumarnaeem 34:d6ce8f961b8b 305 *
ranaumarnaeem 34:d6ce8f961b8b 306 * @param[in,out] msg Pointer to a message structure
ranaumarnaeem 34:d6ce8f961b8b 307 * @param[in] buf Pointer to a buffer containing the message
ranaumarnaeem 34:d6ce8f961b8b 308 * @param[in] len Length of the buffer
ranaumarnaeem 34:d6ce8f961b8b 309 *
ranaumarnaeem 34:d6ce8f961b8b 310 * @returns Operation status
ranaumarnaeem 34:d6ce8f961b8b 311 * @retval 0 Success
ranaumarnaeem 34:d6ce8f961b8b 312 * @retval <0 Error
ranaumarnaeem 34:d6ce8f961b8b 313 */
ranaumarnaeem 34:d6ce8f961b8b 314 int coap_msg_parse(coap_msg_t *msg, char *buf, size_t len);
ranaumarnaeem 34:d6ce8f961b8b 315
ranaumarnaeem 34:d6ce8f961b8b 316 /**
ranaumarnaeem 34:d6ce8f961b8b 317 * @brief Set the type in a message
ranaumarnaeem 34:d6ce8f961b8b 318 *
ranaumarnaeem 34:d6ce8f961b8b 319 * @param[out] msg Pointer to a message structure
ranaumarnaeem 34:d6ce8f961b8b 320 * @param[in] type Message type
ranaumarnaeem 34:d6ce8f961b8b 321 *
ranaumarnaeem 34:d6ce8f961b8b 322 * @returns Operation status
ranaumarnaeem 34:d6ce8f961b8b 323 * @retval 0 Success
ranaumarnaeem 34:d6ce8f961b8b 324 * @retval <0 Error
ranaumarnaeem 34:d6ce8f961b8b 325 */
ranaumarnaeem 34:d6ce8f961b8b 326 int coap_msg_set_type(coap_msg_t *msg, unsigned type);
ranaumarnaeem 34:d6ce8f961b8b 327
ranaumarnaeem 34:d6ce8f961b8b 328 /**
ranaumarnaeem 34:d6ce8f961b8b 329 * @brief Set the code in a message
ranaumarnaeem 34:d6ce8f961b8b 330 *
ranaumarnaeem 34:d6ce8f961b8b 331 * @param[out] msg Pointer to a message structure
ranaumarnaeem 34:d6ce8f961b8b 332 * @param[in] code_class Code class
ranaumarnaeem 34:d6ce8f961b8b 333 * @param[in] code_detail Code detail
ranaumarnaeem 34:d6ce8f961b8b 334 *
ranaumarnaeem 34:d6ce8f961b8b 335 * @returns Operation status
ranaumarnaeem 34:d6ce8f961b8b 336 * @retval 0 Success
ranaumarnaeem 34:d6ce8f961b8b 337 * @retval <0 Error
ranaumarnaeem 34:d6ce8f961b8b 338 */
ranaumarnaeem 34:d6ce8f961b8b 339 int coap_msg_set_code(coap_msg_t *msg, unsigned code_class, unsigned code_detail);
ranaumarnaeem 34:d6ce8f961b8b 340
ranaumarnaeem 34:d6ce8f961b8b 341 /**
ranaumarnaeem 34:d6ce8f961b8b 342 * @brief Set the message ID in a message
ranaumarnaeem 34:d6ce8f961b8b 343 *
ranaumarnaeem 34:d6ce8f961b8b 344 * @param[out] msg Pointer to a message structure
ranaumarnaeem 34:d6ce8f961b8b 345 * @param[in] msg_id Message ID
ranaumarnaeem 34:d6ce8f961b8b 346 *
ranaumarnaeem 34:d6ce8f961b8b 347 * @returns Operation status
ranaumarnaeem 34:d6ce8f961b8b 348 * @retval 0 Success
ranaumarnaeem 34:d6ce8f961b8b 349 * @retval <0 Error
ranaumarnaeem 34:d6ce8f961b8b 350 */
ranaumarnaeem 34:d6ce8f961b8b 351 int coap_msg_set_msg_id(coap_msg_t *msg, unsigned msg_id);
ranaumarnaeem 34:d6ce8f961b8b 352
ranaumarnaeem 34:d6ce8f961b8b 353 /**
ranaumarnaeem 34:d6ce8f961b8b 354 * @brief Set the token in a message
ranaumarnaeem 34:d6ce8f961b8b 355 *
ranaumarnaeem 34:d6ce8f961b8b 356 * @param[out] msg Pointer to a message structure
ranaumarnaeem 34:d6ce8f961b8b 357 * @param[in] buf Pointer to a buffer containing the token
ranaumarnaeem 34:d6ce8f961b8b 358 * @param[in] len Length of the buffer
ranaumarnaeem 34:d6ce8f961b8b 359 *
ranaumarnaeem 34:d6ce8f961b8b 360 * @returns Operation status
ranaumarnaeem 34:d6ce8f961b8b 361 * @retval 0 Success
ranaumarnaeem 34:d6ce8f961b8b 362 * @retval <0 Error
ranaumarnaeem 34:d6ce8f961b8b 363 */
ranaumarnaeem 34:d6ce8f961b8b 364 int coap_msg_set_token(coap_msg_t *msg, char *buf, size_t len);
ranaumarnaeem 34:d6ce8f961b8b 365
ranaumarnaeem 34:d6ce8f961b8b 366 /**
ranaumarnaeem 34:d6ce8f961b8b 367 * @brief Add a token to a message structure
ranaumarnaeem 34:d6ce8f961b8b 368 *
ranaumarnaeem 34:d6ce8f961b8b 369 * @param[in,out] msg Pointer to a message structure
ranaumarnaeem 34:d6ce8f961b8b 370 * @param[in] num Option number
ranaumarnaeem 34:d6ce8f961b8b 371 * @param[in] len Option length
ranaumarnaeem 34:d6ce8f961b8b 372 * @param[in] val Pointer to a buffer containing the option value
ranaumarnaeem 34:d6ce8f961b8b 373 *
ranaumarnaeem 34:d6ce8f961b8b 374 * @returns Operation status
ranaumarnaeem 34:d6ce8f961b8b 375 * @retval 0 Success
ranaumarnaeem 34:d6ce8f961b8b 376 * @retval <0 Error
ranaumarnaeem 34:d6ce8f961b8b 377 */
ranaumarnaeem 34:d6ce8f961b8b 378 int coap_msg_add_op(coap_msg_t *msg, unsigned num, unsigned len, const char *val);
ranaumarnaeem 34:d6ce8f961b8b 379
ranaumarnaeem 34:d6ce8f961b8b 380 /**
ranaumarnaeem 34:d6ce8f961b8b 381 * @brief Set the payload in a message
ranaumarnaeem 34:d6ce8f961b8b 382 *
ranaumarnaeem 34:d6ce8f961b8b 383 * Free the buffer in the message structure containing
ranaumarnaeem 34:d6ce8f961b8b 384 * the current payload if there is one, allocate a buffer
ranaumarnaeem 34:d6ce8f961b8b 385 * to contain the new payload and copy the buffer argument
ranaumarnaeem 34:d6ce8f961b8b 386 * into the new payload buffer.
ranaumarnaeem 34:d6ce8f961b8b 387 *
ranaumarnaeem 34:d6ce8f961b8b 388 * @param[in,out] msg Pointer to a message structure
ranaumarnaeem 34:d6ce8f961b8b 389 * @param[in] buf Pointer to a buffer containing the payload
ranaumarnaeem 34:d6ce8f961b8b 390 * @param[in] len Length of the buffer
ranaumarnaeem 34:d6ce8f961b8b 391 *
ranaumarnaeem 34:d6ce8f961b8b 392 * @returns Operation status
ranaumarnaeem 34:d6ce8f961b8b 393 * @retval 0 Success
ranaumarnaeem 34:d6ce8f961b8b 394 * @retval <0 Error
ranaumarnaeem 34:d6ce8f961b8b 395 */
ranaumarnaeem 34:d6ce8f961b8b 396 int coap_msg_set_payload(coap_msg_t *msg, char *buf, size_t len);
ranaumarnaeem 34:d6ce8f961b8b 397
ranaumarnaeem 34:d6ce8f961b8b 398 /**
ranaumarnaeem 34:d6ce8f961b8b 399 * @brief Format a message
ranaumarnaeem 34:d6ce8f961b8b 400 *
ranaumarnaeem 34:d6ce8f961b8b 401 * @param[in] msg Pointer to a message structure
ranaumarnaeem 34:d6ce8f961b8b 402 * @param[out] buf Pointer to a buffer to contain the formatted message
ranaumarnaeem 34:d6ce8f961b8b 403 * @param[in] len Length of the buffer
ranaumarnaeem 34:d6ce8f961b8b 404 *
ranaumarnaeem 34:d6ce8f961b8b 405 * @returns Length of the formatted message or error code
ranaumarnaeem 34:d6ce8f961b8b 406 * @retval >0 Length of the formatted message
ranaumarnaeem 34:d6ce8f961b8b 407 * @retval <0 Error
ranaumarnaeem 34:d6ce8f961b8b 408 */
ranaumarnaeem 34:d6ce8f961b8b 409 int coap_msg_format(coap_msg_t *msg, char *buf, size_t len);
ranaumarnaeem 34:d6ce8f961b8b 410
ranaumarnaeem 34:d6ce8f961b8b 411 /**
ranaumarnaeem 34:d6ce8f961b8b 412 * @brief Copy a message
ranaumarnaeem 34:d6ce8f961b8b 413 *
ranaumarnaeem 34:d6ce8f961b8b 414 * @param[in,out] dst Pointer to the destination message structure
ranaumarnaeem 34:d6ce8f961b8b 415 * @param[in] src Pointer to the source message structure
ranaumarnaeem 34:d6ce8f961b8b 416 *
ranaumarnaeem 34:d6ce8f961b8b 417 * @returns Operation status
ranaumarnaeem 34:d6ce8f961b8b 418 * @retval 0 Success
ranaumarnaeem 34:d6ce8f961b8b 419 * @retval <0 Error
ranaumarnaeem 34:d6ce8f961b8b 420 */
ranaumarnaeem 34:d6ce8f961b8b 421 int coap_msg_copy(coap_msg_t *dst, coap_msg_t *src);
ranaumarnaeem 34:d6ce8f961b8b 422
ranaumarnaeem 34:d6ce8f961b8b 423 #endif
ranaumarnaeem 34:d6ce8f961b8b 424