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Dependencies: MAX44000 PWM_Tone_Library nexpaq_mdk
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sn_coap_header.h
00001 /* 00002 * Copyright (c) 2011-2015 ARM Limited. All rights reserved. 00003 * SPDX-License-Identifier: Apache-2.0 00004 * Licensed under the Apache License, Version 2.0 (the License); you may 00005 * not use this file except in compliance with the License. 00006 * You may obtain a copy of the License at 00007 * 00008 * http://www.apache.org/licenses/LICENSE-2.0 00009 * 00010 * Unless required by applicable law or agreed to in writing, software 00011 * distributed under the License is distributed on an AS IS BASIS, WITHOUT 00012 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 00013 * See the License for the specific language governing permissions and 00014 * limitations under the License. 00015 */ 00016 00017 /** 00018 * \file sn_coap_header.h 00019 * 00020 * \brief CoAP C-library User header interface header file 00021 */ 00022 00023 #ifndef SN_COAP_HEADER_H_ 00024 #define SN_COAP_HEADER_H_ 00025 00026 #ifdef __cplusplus 00027 extern "C" { 00028 #endif 00029 00030 /* Handle structure */ 00031 struct coap_s; 00032 00033 /* * * * * * * * * * * * * * */ 00034 /* * * * ENUMERATIONS * * * */ 00035 /* * * * * * * * * * * * * * */ 00036 00037 /** 00038 * \brief Enumeration for CoAP Version 00039 */ 00040 typedef enum coap_version_ { 00041 COAP_VERSION_1 = 0x40, 00042 COAP_VERSION_UNKNOWN = 0xFF 00043 } coap_version_e; 00044 00045 /** 00046 * \brief Enumeration for CoAP Message type, used in CoAP Header 00047 */ 00048 typedef enum sn_coap_msg_type_ { 00049 COAP_MSG_TYPE_CONFIRMABLE = 0x00, /**< Reliable Request messages */ 00050 COAP_MSG_TYPE_NON_CONFIRMABLE = 0x10, /**< Non-reliable Request and Response messages */ 00051 COAP_MSG_TYPE_ACKNOWLEDGEMENT = 0x20, /**< Response to a Confirmable Request */ 00052 COAP_MSG_TYPE_RESET = 0x30 /**< Answer a Bad Request */ 00053 } sn_coap_msg_type_e; 00054 00055 /** 00056 * \brief Enumeration for CoAP Message code, used in CoAP Header 00057 */ 00058 typedef enum sn_coap_msg_code_ { 00059 COAP_MSG_CODE_EMPTY = 0, 00060 COAP_MSG_CODE_REQUEST_GET = 1, 00061 COAP_MSG_CODE_REQUEST_POST = 2, 00062 COAP_MSG_CODE_REQUEST_PUT = 3, 00063 COAP_MSG_CODE_REQUEST_DELETE = 4, 00064 00065 COAP_MSG_CODE_RESPONSE_CREATED = 65, 00066 COAP_MSG_CODE_RESPONSE_DELETED = 66, 00067 COAP_MSG_CODE_RESPONSE_VALID = 67, 00068 COAP_MSG_CODE_RESPONSE_CHANGED = 68, 00069 COAP_MSG_CODE_RESPONSE_CONTENT = 69, 00070 COAP_MSG_CODE_RESPONSE_CONTINUE = 95, 00071 COAP_MSG_CODE_RESPONSE_BAD_REQUEST = 128, 00072 COAP_MSG_CODE_RESPONSE_UNAUTHORIZED = 129, 00073 COAP_MSG_CODE_RESPONSE_BAD_OPTION = 130, 00074 COAP_MSG_CODE_RESPONSE_FORBIDDEN = 131, 00075 COAP_MSG_CODE_RESPONSE_NOT_FOUND = 132, 00076 COAP_MSG_CODE_RESPONSE_METHOD_NOT_ALLOWED = 133, 00077 COAP_MSG_CODE_RESPONSE_NOT_ACCEPTABLE = 134, 00078 COAP_MSG_CODE_RESPONSE_REQUEST_ENTITY_INCOMPLETE = 136, 00079 COAP_MSG_CODE_RESPONSE_PRECONDITION_FAILED = 140, 00080 COAP_MSG_CODE_RESPONSE_REQUEST_ENTITY_TOO_LARGE = 141, 00081 COAP_MSG_CODE_RESPONSE_UNSUPPORTED_CONTENT_FORMAT = 143, 00082 COAP_MSG_CODE_RESPONSE_INTERNAL_SERVER_ERROR = 160, 00083 COAP_MSG_CODE_RESPONSE_NOT_IMPLEMENTED = 161, 00084 COAP_MSG_CODE_RESPONSE_BAD_GATEWAY = 162, 00085 COAP_MSG_CODE_RESPONSE_SERVICE_UNAVAILABLE = 163, 00086 COAP_MSG_CODE_RESPONSE_GATEWAY_TIMEOUT = 164, 00087 COAP_MSG_CODE_RESPONSE_PROXYING_NOT_SUPPORTED = 165 00088 } sn_coap_msg_code_e; 00089 00090 /** 00091 * \brief Enumeration for CoAP Option number, used in CoAP Header 00092 */ 00093 typedef enum sn_coap_option_numbers_ { 00094 COAP_OPTION_IF_MATCH = 1, 00095 COAP_OPTION_URI_HOST = 3, 00096 COAP_OPTION_ETAG = 4, 00097 COAP_OPTION_IF_NONE_MATCH = 5, 00098 COAP_OPTION_OBSERVE = 6, 00099 COAP_OPTION_URI_PORT = 7, 00100 COAP_OPTION_LOCATION_PATH = 8, 00101 COAP_OPTION_URI_PATH = 11, 00102 COAP_OPTION_CONTENT_FORMAT = 12, 00103 COAP_OPTION_MAX_AGE = 14, 00104 COAP_OPTION_URI_QUERY = 15, 00105 COAP_OPTION_ACCEPT = 17, 00106 COAP_OPTION_LOCATION_QUERY = 20, 00107 COAP_OPTION_BLOCK2 = 23, 00108 COAP_OPTION_BLOCK1 = 27, 00109 COAP_OPTION_SIZE2 = 28, 00110 COAP_OPTION_PROXY_URI = 35, 00111 COAP_OPTION_PROXY_SCHEME = 39, 00112 COAP_OPTION_SIZE1 = 60 00113 // 128 = (Reserved) 00114 // 132 = (Reserved) 00115 // 136 = (Reserved) 00116 } sn_coap_option_numbers_e; 00117 00118 /** 00119 * \brief Enumeration for CoAP Content Format codes 00120 */ 00121 typedef enum sn_coap_content_format_ { 00122 COAP_CT_NONE = -1, 00123 COAP_CT_TEXT_PLAIN = 0, 00124 COAP_CT_LINK_FORMAT = 40, 00125 COAP_CT_XML = 41, 00126 COAP_CT_OCTET_STREAM = 42, 00127 COAP_CT_EXI = 47, 00128 COAP_CT_JSON = 50 00129 } sn_coap_content_format_e; 00130 00131 /** 00132 * \brief Enumeration for CoAP status, used in CoAP Header 00133 */ 00134 typedef enum sn_coap_status_ { 00135 COAP_STATUS_OK = 0, /**< Default value is OK */ 00136 COAP_STATUS_PARSER_ERROR_IN_HEADER = 1, /**< CoAP will send Reset message to invalid message sender */ 00137 COAP_STATUS_PARSER_DUPLICATED_MSG = 2, /**< CoAP will send Acknowledgement message to duplicated message sender */ 00138 COAP_STATUS_PARSER_BLOCKWISE_MSG_RECEIVING = 3, /**< User will get whole message after all message blocks received. 00139 User must release messages with this status. */ 00140 COAP_STATUS_PARSER_BLOCKWISE_ACK = 4, /**< Acknowledgement for sent Blockwise message received */ 00141 COAP_STATUS_PARSER_BLOCKWISE_MSG_REJECTED = 5, /**< Blockwise message received but not supported by compiling switch */ 00142 COAP_STATUS_PARSER_BLOCKWISE_MSG_RECEIVED = 6, /**< Blockwise message fully received and returned to app. 00143 User must take care of releasing whole payload of the blockwise messages */ 00144 COAP_STATUS_BUILDER_MESSAGE_SENDING_FAILED = 7 /**< When re-transmissions have been done and ACK not received, CoAP library calls 00145 RX callback with this status */ 00146 } sn_coap_status_e; 00147 00148 00149 /* * * * * * * * * * * * * */ 00150 /* * * * STRUCTURES * * * */ 00151 /* * * * * * * * * * * * * */ 00152 00153 /** 00154 * \brief Structure for CoAP Options 00155 */ 00156 typedef struct sn_coap_options_list_ { 00157 00158 uint8_t max_age_len; /**< 0-4 bytes. */ 00159 uint8_t *max_age_ptr; /**< Must be set to NULL if not used */ 00160 00161 uint16_t proxy_uri_len; /**< 1-1034 bytes. */ 00162 uint8_t *proxy_uri_ptr; /**< Must be set to NULL if not used */ 00163 00164 uint8_t etag_len; /**< 1-8 bytes. Repeatable */ 00165 uint8_t *etag_ptr; /**< Must be set to NULL if not used */ 00166 00167 uint16_t uri_host_len; /**< 1-255 bytes. */ 00168 uint8_t *uri_host_ptr; /**< Must be set to NULL if not used */ 00169 00170 uint16_t location_path_len; /**< 0-255 bytes. Repeatable */ 00171 uint8_t *location_path_ptr; /**< Must be set to NULL if not used */ 00172 00173 uint8_t uri_port_len; /**< 0-2 bytes. */ 00174 uint8_t *uri_port_ptr; /**< Must be set to NULL if not used */ 00175 00176 uint16_t location_query_len; /**< 0-255 bytes. Repeatable */ 00177 uint8_t *location_query_ptr; /**< Must be set to NULL if not used */ 00178 00179 uint8_t observe; 00180 uint8_t observe_len; /**< 0-2 bytes. */ 00181 uint8_t *observe_ptr; /**< Must be set to NULL if not used */ 00182 00183 uint8_t accept_len; /**< 0-2 bytes. Repeatable */ 00184 uint8_t *accept_ptr; /**< Must be set to NULL if not used */ 00185 00186 uint16_t uri_query_len; /**< 1-255 bytes. Repeatable */ 00187 uint8_t *uri_query_ptr; /**< Must be set to NULL if not used */ 00188 00189 uint8_t block1_len; /**< 0-3 bytes. */ 00190 uint8_t *block1_ptr; /**< Not for User */ 00191 00192 uint8_t block2_len; /**< 0-3 bytes. */ 00193 uint8_t *block2_ptr; /**< Not for User */ 00194 00195 uint8_t size1_len; /**< 0-4 bytes. */ 00196 uint8_t *size1_ptr; /**< Not for User */ 00197 00198 uint8_t size2_len; /**< 0-4 bytes. */ 00199 uint8_t *size2_ptr; /**< Not for User */ 00200 } sn_coap_options_list_s; 00201 00202 00203 /* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! */ 00204 /* !!! Main CoAP message struct !!! */ 00205 /* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! */ 00206 00207 /** 00208 * \brief Main CoAP message struct 00209 */ 00210 typedef struct sn_coap_hdr_ { 00211 sn_coap_status_e coap_status; /**< Used for telling to User special cases when parsing message */ 00212 00213 /* * * * * * * * * * * */ 00214 /* * * * Header * * * */ 00215 /* * * * * * * * * * * */ 00216 00217 sn_coap_msg_type_e msg_type; /**< Confirmable, Non-Confirmable, Acknowledgement or Reset */ 00218 sn_coap_msg_code_e msg_code; /**< Empty: 0; Requests: 1-31; Responses: 64-191 */ 00219 uint16_t msg_id; /**< Message ID. Parser sets parsed message ID, builder sets message ID of built coap message */ 00220 00221 /* * * * * * * * * * * */ 00222 /* * * * Options * * * */ 00223 /* * * * * * * * * * * */ 00224 00225 /* Here are most often used Options */ 00226 00227 uint16_t uri_path_len; /**< 0-255 bytes. Repeatable. */ 00228 uint8_t *uri_path_ptr; /**< Must be set to NULL if not used. E.g: temp1/temp2 */ 00229 00230 uint8_t token_len; /**< 1-8 bytes. */ 00231 uint8_t *token_ptr; /**< Must be set to NULL if not used */ 00232 00233 uint8_t content_type_len; /**< 0-2 bytes. */ 00234 uint8_t *content_type_ptr; /**< Must be set to NULL if not used */ 00235 00236 /* Here are not so often used Options */ 00237 sn_coap_options_list_s *options_list_ptr; /**< Must be set to NULL if not used */ 00238 00239 /* * * * * * * * * * * */ 00240 /* * * * Payload * * * */ 00241 /* * * * * * * * * * * */ 00242 00243 uint16_t payload_len; /**< Must be set to zero if not used */ 00244 uint8_t *payload_ptr; /**< Must be set to NULL if not used */ 00245 } sn_coap_hdr_s; 00246 00247 /* * * * * * * * * * * * * * * * * * * * * * */ 00248 /* * * * EXTERNAL FUNCTION PROTOTYPES * * * */ 00249 /* * * * * * * * * * * * * * * * * * * * * * */ 00250 /** 00251 * \fn sn_coap_hdr_s *sn_coap_parser(struct coap_s *handle, uint16_t packet_data_len, uint8_t *packet_data_ptr, coap_version_e *coap_version_ptr) 00252 * 00253 * \brief Parses CoAP message from given Packet data 00254 * 00255 * \param *handle Pointer to CoAP library handle 00256 * 00257 * \param packet_data_len is length of given Packet data to be parsed to CoAP message 00258 * 00259 * \param *packet_data_ptr is source for Packet data to be parsed to CoAP message 00260 * 00261 * \param *coap_version_ptr is destination for parsed CoAP specification version 00262 * 00263 * \return Return value is pointer to parsed CoAP message.\n 00264 * In following failure cases NULL is returned:\n 00265 * -Failure in given pointer (= NULL)\n 00266 * -Failure in memory allocation (malloc() returns NULL) 00267 */ 00268 extern sn_coap_hdr_s *sn_coap_parser(struct coap_s *handle, uint16_t packet_data_len, uint8_t *packet_data_ptr, coap_version_e *coap_version_ptr); 00269 00270 /** 00271 * \fn void sn_coap_parser_release_allocated_coap_msg_mem(struct coap_s *handle, sn_coap_hdr_s *freed_coap_msg_ptr) 00272 * 00273 * \brief Releases memory of given CoAP message 00274 * 00275 * Note!!! Does not release Payload part 00276 * 00277 * \param *handle Pointer to CoAP library handle 00278 * 00279 * \param *freed_coap_msg_ptr is pointer to released CoAP message 00280 */ 00281 extern void sn_coap_parser_release_allocated_coap_msg_mem(struct coap_s *handle, sn_coap_hdr_s *freed_coap_msg_ptr); 00282 00283 /** 00284 * \fn int16_t sn_coap_builder(uint8_t *dst_packet_data_ptr, sn_coap_hdr_s *src_coap_msg_ptr) 00285 * 00286 * \brief Builds an outgoing message buffer from a CoAP header structure. 00287 * 00288 * \param *dst_packet_data_ptr is pointer to allocated destination to built CoAP packet 00289 * 00290 * \param *src_coap_msg_ptr is pointer to source structure for building Packet data 00291 * 00292 * \return Return value is byte count of built Packet data. In failure cases:\n 00293 * -1 = Failure in given CoAP header structure\n 00294 * -2 = Failure in given pointer (= NULL) 00295 */ 00296 extern int16_t sn_coap_builder(uint8_t *dst_packet_data_ptr, sn_coap_hdr_s *src_coap_msg_ptr); 00297 00298 /** 00299 * \fn uint16_t sn_coap_builder_calc_needed_packet_data_size(sn_coap_hdr_s *src_coap_msg_ptr) 00300 * 00301 * \brief Calculates needed Packet data memory size for given CoAP message 00302 * 00303 * \param *src_coap_msg_ptr is pointer to data which needed Packet 00304 * data length is calculated 00305 * 00306 * \return Return value is count of needed memory as bytes for build Packet data 00307 * Null if failed 00308 */ 00309 extern uint16_t sn_coap_builder_calc_needed_packet_data_size(sn_coap_hdr_s *src_coap_msg_ptr); 00310 00311 /** 00312 * \fn int16_t sn_coap_builder_2(uint8_t *dst_packet_data_ptr, sn_coap_hdr_s *src_coap_msg_ptr, uint16_t blockwise_size) 00313 * 00314 * \brief Builds an outgoing message buffer from a CoAP header structure. 00315 * 00316 * \param *dst_packet_data_ptr is pointer to allocated destination to built CoAP packet 00317 * 00318 * \param *src_coap_msg_ptr is pointer to source structure for building Packet data 00319 * 00320 * \param blockwise_payload_size Blockwise message maximum payload size 00321 * 00322 * \return Return value is byte count of built Packet data. In failure cases:\n 00323 * -1 = Failure in given CoAP header structure\n 00324 * -2 = Failure in given pointer (= NULL) 00325 */ 00326 extern int16_t sn_coap_builder_2(uint8_t *dst_packet_data_ptr, sn_coap_hdr_s *src_coap_msg_ptr, uint16_t blockwise_payload_size); 00327 00328 /** 00329 * \fn uint16_t sn_coap_builder_calc_needed_packet_data_size_2(sn_coap_hdr_s *src_coap_msg_ptr, uint16_t blockwise_payload_size) 00330 * 00331 * \brief Calculates needed Packet data memory size for given CoAP message 00332 * 00333 * \param *src_coap_msg_ptr is pointer to data which needed Packet 00334 * data length is calculated 00335 * \param blockwise_payload_size Blockwise message maximum payload size 00336 * 00337 * \return Return value is count of needed memory as bytes for build Packet data 00338 * Null if failed 00339 */ 00340 extern uint16_t sn_coap_builder_calc_needed_packet_data_size_2(sn_coap_hdr_s *src_coap_msg_ptr, uint16_t blockwise_payload_size); 00341 00342 /** 00343 * \fn sn_coap_hdr_s *sn_coap_build_response(struct coap_s *handle, sn_coap_hdr_s *coap_packet_ptr, uint8_t msg_code) 00344 * 00345 * \brief Prepares generic response packet from a request packet. This function allocates memory for the resulting sn_coap_hdr_s 00346 * 00347 * \param *handle Pointer to CoAP library handle 00348 * \param *coap_packet_ptr The request packet pointer 00349 * \param msg_code response messages code 00350 * 00351 * \return *coap_packet_ptr The allocated and pre-filled response packet pointer 00352 * NULL Error in parsing the request 00353 * 00354 */ 00355 extern sn_coap_hdr_s *sn_coap_build_response(struct coap_s *handle, sn_coap_hdr_s *coap_packet_ptr, uint8_t msg_code); 00356 00357 /** 00358 * \brief Initialise a message structure to empty 00359 * 00360 * \param *coap_msg_ptr is pointer to CoAP message to initialise 00361 * 00362 * \return Return value is pointer passed in 00363 */ 00364 extern sn_coap_hdr_s *sn_coap_parser_init_message(sn_coap_hdr_s *coap_msg_ptr); 00365 00366 /** 00367 * \brief Allocate an empty message structure 00368 * 00369 * \param *handle Pointer to CoAP library handle 00370 * 00371 * \return Return value is pointer to an empty CoAP message.\n 00372 * In following failure cases NULL is returned:\n 00373 * -Failure in given pointer (= NULL)\n 00374 * -Failure in memory allocation (malloc() returns NULL) 00375 */ 00376 extern sn_coap_hdr_s *sn_coap_parser_alloc_message(struct coap_s *handle); 00377 00378 /** 00379 * \brief Allocate an empty options structure 00380 * 00381 * \param *handle Pointer to CoAP library handle 00382 * \param *coap_msg_ptr is pointer to CoAP message that will contain the options 00383 * 00384 * If the message already has a pointer to an option structure, that pointer 00385 * is returned, rather than a new structure being allocated. 00386 * 00387 * \return Return value is pointer to the CoAP options structure.\n 00388 * In following failure cases NULL is returned:\n 00389 * -Failure in given pointer (= NULL)\n 00390 * -Failure in memory allocation (malloc() returns NULL) 00391 */ 00392 extern sn_coap_options_list_s *sn_coap_parser_alloc_options(struct coap_s *handle, sn_coap_hdr_s *coap_msg_ptr); 00393 00394 #ifdef __cplusplus 00395 } 00396 #endif 00397 00398 #endif /* SN_COAP_HEADER_H_ */
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